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Merge git://git.linux-nfs.org/pub/linux/nfs-2.6

Browse source 
* git://git.linux-nfs.org/pub/linux/nfs-2.6: (118 commits)
  NFSv4: Iterate through all nfs_clients when the server recalls a delegation
  NFSv4: Deal more correctly with duplicate delegations
  NFS: Fix a potential race between umount and nfs_access_cache_shrinker()
  NFS: Add an asynchronous delegreturn operation for use in nfs_clear_inode
  nfs: convert NFS_*(inode) helpers to static inline
  nfs: obliterate NFS_FLAGS macro
  NFS: Address memory leaks in the NFS client mount option parser
  nfs4: allow nfsv4 acls on non-regular-files
  NFS: Optimise away the sigmask code in aio/dio reads and writes
  SUNRPC: Don't bother changing the sigmask for asynchronous RPC calls
  SUNRPC: rpcb_getport_sync() passes incorrect address size to rpc_create()
  SUNRPC: Clean up block comment preceding rpcb_getport_sync()
  SUNRPC: Use appropriate argument types in rpcb client
  SUNRPC: rpcb_getport_sync() should use built-in hostname generator
  SUNRPC: Clean up functions that free address_strings array
  NFS: NFS version number is unsigned
  NLM: Fix a bogus 'return' in nlmclnt_rpc_release
  NLM: Introduce an arguments structure for nlmclnt_init()
  NLM/NFS: Use cached nlm_host when calling nlmclnt_proc()
  NFS: Invoke nlmclnt_init during NFS mount processing
  ...
This commit is contained in:
Linus Torvalds 2008-01-30 19:54:24 +11:00
commit 85004cc367
55 changed files with 1920 additions and 1303 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

42
fs/lockd/clntlock.c
View file

@ -41,6 +41,48 @@ struct nlm_wait {
static LIST_HEAD(nlm_blocked);
/**
* nlmclnt_init - Set up per-NFS mount point lockd data structures
* @nlm_init: pointer to arguments structure
*
* Returns pointer to an appropriate nlm_host struct,
* or an ERR_PTR value.
*/
struct nlm_host *nlmclnt_init(const struct nlmclnt_initdata *nlm_init)
{
struct nlm_host *host;
u32 nlm_version = (nlm_init->nfs_version == 2) ? 1 : 4;
int status;
status = lockd_up(nlm_init->protocol);
if (status < 0)
return ERR_PTR(status);
host = nlmclnt_lookup_host((struct sockaddr_in *)nlm_init->address,
nlm_init->protocol, nlm_version,
nlm_init->hostname,
strlen(nlm_init->hostname));
if (host == NULL) {
lockd_down();
return ERR_PTR(-ENOLCK);
}
return host;
}
EXPORT_SYMBOL_GPL(nlmclnt_init);
/**
* nlmclnt_done - Release resources allocated by nlmclnt_init()
* @host: nlm_host structure reserved by nlmclnt_init()
*
*/
void nlmclnt_done(struct nlm_host *host)
{
nlm_release_host(host);
lockd_down();
}
EXPORT_SYMBOL_GPL(nlmclnt_done);
/*
* Queue up a lock for blocking so that the GRANTED request can see it
*/

35
fs/lockd/clntproc.c
View file

@ -145,34 +145,21 @@ static void nlmclnt_release_lockargs(struct nlm_rqst *req)
BUG_ON(req->a_args.lock.fl.fl_ops != NULL);
}
/*
* This is the main entry point for the NLM client.
/**
* nlmclnt_proc - Perform a single client-side lock request
* @host: address of a valid nlm_host context representing the NLM server
* @cmd: fcntl-style file lock operation to perform
* @fl: address of arguments for the lock operation
*
*/
int
nlmclnt_proc(struct inode *inode, int cmd, struct file_lock *fl)
int nlmclnt_proc(struct nlm_host *host, int cmd, struct file_lock *fl)
{
struct rpc_clnt *client = NFS_CLIENT(inode);
struct sockaddr_in addr;
struct nfs_server *nfssrv = NFS_SERVER(inode);
struct nlm_host *host;
struct nlm_rqst *call;
sigset_t oldset;
unsigned long flags;
int status, vers;
vers = (NFS_PROTO(inode)->version == 3) ? 4 : 1;
if (NFS_PROTO(inode)->version > 3) {
printk(KERN_NOTICE "NFSv4 file locking not implemented!\n");
return -ENOLCK;
}
rpc_peeraddr(client, (struct sockaddr *) &addr, sizeof(addr));
host = nlmclnt_lookup_host(&addr, client->cl_xprt->prot, vers,
nfssrv->nfs_client->cl_hostname,
strlen(nfssrv->nfs_client->cl_hostname));
if (host == NULL)
return -ENOLCK;
int status;
nlm_get_host(host);
call = nlm_alloc_call(host);
if (call == NULL)
return -ENOMEM;
@ -219,7 +206,7 @@ nlmclnt_proc(struct inode *inode, int cmd, struct file_lock *fl)
dprintk("lockd: clnt proc returns %d\n", status);
return status;
}
EXPORT_SYMBOL(nlmclnt_proc);
EXPORT_SYMBOL_GPL(nlmclnt_proc);
/*
* Allocate an NLM RPC call struct
@ -257,7 +244,7 @@ void nlm_release_call(struct nlm_rqst *call)
static void nlmclnt_rpc_release(void *data)
{
return nlm_release_call(data);
nlm_release_call(data);
}
static int nlm_wait_on_grace(wait_queue_head_t *queue)

3
fs/lockd/xdr.c
View file

@ -612,8 +612,7 @@ const char *nlmdbg_cookie2a(const struct nlm_cookie *cookie)
* called with BKL held.
*/
static char buf[2*NLM_MAXCOOKIELEN+1];
int i;
int len = sizeof(buf);
unsigned int i, len = sizeof(buf);
char *p = buf;
len--; /* allow for trailing \0 */

7
fs/nfs/callback.c
View file

@ -73,8 +73,6 @@ static void nfs_callback_svc(struct svc_rqst *rqstp)
complete(&nfs_callback_info.started);
for(;;) {
char buf[RPC_MAX_ADDRBUFLEN];
if (signalled()) {
if (nfs_callback_info.users == 0)
break;
@ -92,8 +90,6 @@ static void nfs_callback_svc(struct svc_rqst *rqstp)
__FUNCTION__, -err);
break;
}
dprintk("%s: request from %s\n", __FUNCTION__,
svc_print_addr(rqstp, buf, sizeof(buf)));
svc_process(rqstp);
}
@ -168,12 +164,11 @@ void nfs_callback_down(void)
static int nfs_callback_authenticate(struct svc_rqst *rqstp)
{
struct sockaddr_in *addr = svc_addr_in(rqstp);
struct nfs_client *clp;
char buf[RPC_MAX_ADDRBUFLEN];
/* Don't talk to strangers */
clp = nfs_find_client(addr, 4);
clp = nfs_find_client(svc_addr(rqstp), 4);
if (clp == NULL)
return SVC_DROP;

4
fs/nfs/callback.h
View file

@ -38,7 +38,7 @@ struct cb_compound_hdr_res {
};
struct cb_getattrargs {
struct sockaddr_in *addr;
struct sockaddr *addr;
struct nfs_fh fh;
uint32_t bitmap[2];
};
@ -53,7 +53,7 @@ struct cb_getattrres {
};
struct cb_recallargs {
struct sockaddr_in *addr;
struct sockaddr *addr;
struct nfs_fh fh;
nfs4_stateid stateid;
uint32_t truncate;

51
fs/nfs/callback_proc.c
View file

@ -12,7 +12,9 @@
#include "delegation.h"
#include "internal.h"
#ifdef NFS_DEBUG
#define NFSDBG_FACILITY NFSDBG_CALLBACK
#endif
__be32 nfs4_callback_getattr(struct cb_getattrargs *args, struct cb_getattrres *res)
{
@ -20,12 +22,16 @@ __be32 nfs4_callback_getattr(struct cb_getattrargs *args, struct cb_getattrres *
struct nfs_delegation *delegation;
struct nfs_inode *nfsi;
struct inode *inode;
res->bitmap[0] = res->bitmap[1] = 0;
res->status = htonl(NFS4ERR_BADHANDLE);
clp = nfs_find_client(args->addr, 4);
if (clp == NULL)
goto out;
dprintk("NFS: GETATTR callback request from %s\n",
rpc_peeraddr2str(clp->cl_rpcclient, RPC_DISPLAY_ADDR));
inode = nfs_delegation_find_inode(clp, &args->fh);
if (inode == NULL)
goto out_putclient;
@ -65,23 +71,32 @@ __be32 nfs4_callback_recall(struct cb_recallargs *args, void *dummy)
clp = nfs_find_client(args->addr, 4);
if (clp == NULL)
goto out;
inode = nfs_delegation_find_inode(clp, &args->fh);
if (inode == NULL)
goto out_putclient;
/* Set up a helper thread to actually return the delegation */
switch(nfs_async_inode_return_delegation(inode, &args->stateid)) {
case 0:
res = 0;
break;
case -ENOENT:
res = htonl(NFS4ERR_BAD_STATEID);
break;
default:
res = htonl(NFS4ERR_RESOURCE);
}
iput(inode);
out_putclient:
nfs_put_client(clp);
dprintk("NFS: RECALL callback request from %s\n",
rpc_peeraddr2str(clp->cl_rpcclient, RPC_DISPLAY_ADDR));
do {
struct nfs_client *prev = clp;
inode = nfs_delegation_find_inode(clp, &args->fh);
if (inode != NULL) {
/* Set up a helper thread to actually return the delegation */
switch(nfs_async_inode_return_delegation(inode, &args->stateid)) {
case 0:
res = 0;
break;
case -ENOENT:
if (res != 0)
res = htonl(NFS4ERR_BAD_STATEID);
break;
default:
res = htonl(NFS4ERR_RESOURCE);
}
iput(inode);
}
clp = nfs_find_client_next(prev);
nfs_put_client(prev);
} while (clp != NULL);
out:
dprintk("%s: exit with status = %d\n", __FUNCTION__, ntohl(res));
return res;

6
fs/nfs/callback_xdr.c
View file

@ -139,7 +139,7 @@ static __be32 decode_compound_hdr_arg(struct xdr_stream *xdr, struct cb_compound
if (unlikely(status != 0))
return status;
/* We do not like overly long tags! */
if (hdr->taglen > CB_OP_TAGLEN_MAXSZ-12 || hdr->taglen < 0) {
if (hdr->taglen > CB_OP_TAGLEN_MAXSZ - 12) {
printk("NFSv4 CALLBACK %s: client sent tag of length %u\n",
__FUNCTION__, hdr->taglen);
return htonl(NFS4ERR_RESOURCE);
@ -176,7 +176,7 @@ static __be32 decode_getattr_args(struct svc_rqst *rqstp, struct xdr_stream *xdr
status = decode_fh(xdr, &args->fh);
if (unlikely(status != 0))
goto out;
args->addr = svc_addr_in(rqstp);
args->addr = svc_addr(rqstp);
status = decode_bitmap(xdr, args->bitmap);
out:
dprintk("%s: exit with status = %d\n", __FUNCTION__, ntohl(status));
@ -188,7 +188,7 @@ static __be32 decode_recall_args(struct svc_rqst *rqstp, struct xdr_stream *xdr,
__be32 *p;
__be32 status;
args->addr = svc_addr_in(rqstp);
args->addr = svc_addr(rqstp);
status = decode_stateid(xdr, &args->stateid);
if (unlikely(status != 0))
goto out;

372
fs/nfs/client.c
View file

@ -34,6 +34,8 @@
#include <linux/nfs_idmap.h>
#include <linux/vfs.h>
#include <linux/inet.h>
#include <linux/in6.h>
#include <net/ipv6.h>
#include <linux/nfs_xdr.h>
#include <asm/system.h>
@ -93,22 +95,30 @@ struct rpc_program nfsacl_program = {
};
#endif /* CONFIG_NFS_V3_ACL */
struct nfs_client_initdata {
const char *hostname;
const struct sockaddr *addr;
size_t addrlen;
const struct nfs_rpc_ops *rpc_ops;
int proto;
};
/*
* Allocate a shared client record
*
* Since these are allocated/deallocated very rarely, we don't
* bother putting them in a slab cache...
*/
static struct nfs_client *nfs_alloc_client(const char *hostname,
const struct sockaddr_in *addr,
int nfsversion)
static struct nfs_client *nfs_alloc_client(const struct nfs_client_initdata *cl_init)
{
struct nfs_client *clp;
if ((clp = kzalloc(sizeof(*clp), GFP_KERNEL)) == NULL)
goto error_0;
if (nfsversion == 4) {
clp->rpc_ops = cl_init->rpc_ops;
if (cl_init->rpc_ops->version == 4) {
if (nfs_callback_up() < 0)
goto error_2;
__set_bit(NFS_CS_CALLBACK, &clp->cl_res_state);
@ -117,11 +127,11 @@ static struct nfs_client *nfs_alloc_client(const char *hostname,
atomic_set(&clp->cl_count, 1);
clp->cl_cons_state = NFS_CS_INITING;
clp->cl_nfsversion = nfsversion;
memcpy(&clp->cl_addr, addr, sizeof(clp->cl_addr));
memcpy(&clp->cl_addr, cl_init->addr, cl_init->addrlen);
clp->cl_addrlen = cl_init->addrlen;
if (hostname) {
clp->cl_hostname = kstrdup(hostname, GFP_KERNEL);
if (cl_init->hostname) {
clp->cl_hostname = kstrdup(cl_init->hostname, GFP_KERNEL);
if (!clp->cl_hostname)
goto error_3;
}
@ -129,6 +139,8 @@ static struct nfs_client *nfs_alloc_client(const char *hostname,
INIT_LIST_HEAD(&clp->cl_superblocks);
clp->cl_rpcclient = ERR_PTR(-EINVAL);
clp->cl_proto = cl_init->proto;
#ifdef CONFIG_NFS_V4
init_rwsem(&clp->cl_sem);
INIT_LIST_HEAD(&clp->cl_delegations);
@ -166,7 +178,7 @@ static void nfs4_shutdown_client(struct nfs_client *clp)
*/
static void nfs_free_client(struct nfs_client *clp)
{
dprintk("--> nfs_free_client(%d)\n", clp->cl_nfsversion);
dprintk("--> nfs_free_client(%u)\n", clp->rpc_ops->version);
nfs4_shutdown_client(clp);
@ -203,11 +215,106 @@ void nfs_put_client(struct nfs_client *clp)
}
}
static int nfs_sockaddr_match_ipaddr4(const struct sockaddr_in *sa1,
const struct sockaddr_in *sa2)
{
return sa1->sin_addr.s_addr == sa2->sin_addr.s_addr;
}
static int nfs_sockaddr_match_ipaddr6(const struct sockaddr_in6 *sa1,
const struct sockaddr_in6 *sa2)
{
return ipv6_addr_equal(&sa1->sin6_addr, &sa2->sin6_addr);
}
static int nfs_sockaddr_match_ipaddr(const struct sockaddr *sa1,
const struct sockaddr *sa2)
{
switch (sa1->sa_family) {
case AF_INET:
return nfs_sockaddr_match_ipaddr4((const struct sockaddr_in *)sa1,
(const struct sockaddr_in *)sa2);
case AF_INET6:
return nfs_sockaddr_match_ipaddr6((const struct sockaddr_in6 *)sa1,
(const struct sockaddr_in6 *)sa2);
}
BUG();
}
/*
* Find a client by address
* - caller must hold nfs_client_lock
* Find a client by IP address and protocol version
* - returns NULL if no such client
*/
static struct nfs_client *__nfs_find_client(const struct sockaddr_in *addr, int nfsversion, int match_port)
struct nfs_client *nfs_find_client(const struct sockaddr *addr, u32 nfsversion)
{
struct nfs_client *clp;
spin_lock(&nfs_client_lock);
list_for_each_entry(clp, &nfs_client_list, cl_share_link) {
struct sockaddr *clap = (struct sockaddr *)&clp->cl_addr;
/* Don't match clients that failed to initialise properly */
if (clp->cl_cons_state != NFS_CS_READY)
continue;
/* Different NFS versions cannot share the same nfs_client */
if (clp->rpc_ops->version != nfsversion)
continue;
if (addr->sa_family != clap->sa_family)
continue;
/* Match only the IP address, not the port number */
if (!nfs_sockaddr_match_ipaddr(addr, clap))
continue;
atomic_inc(&clp->cl_count);
spin_unlock(&nfs_client_lock);
return clp;
}
spin_unlock(&nfs_client_lock);
return NULL;
}
/*
* Find a client by IP address and protocol version
* - returns NULL if no such client
*/
struct nfs_client *nfs_find_client_next(struct nfs_client *clp)
{
struct sockaddr *sap = (struct sockaddr *)&clp->cl_addr;
u32 nfsvers = clp->rpc_ops->version;
spin_lock(&nfs_client_lock);
list_for_each_entry_continue(clp, &nfs_client_list, cl_share_link) {
struct sockaddr *clap = (struct sockaddr *)&clp->cl_addr;
/* Don't match clients that failed to initialise properly */
if (clp->cl_cons_state != NFS_CS_READY)
continue;
/* Different NFS versions cannot share the same nfs_client */
if (clp->rpc_ops->version != nfsvers)
continue;
if (sap->sa_family != clap->sa_family)
continue;
/* Match only the IP address, not the port number */
if (!nfs_sockaddr_match_ipaddr(sap, clap))
continue;
atomic_inc(&clp->cl_count);
spin_unlock(&nfs_client_lock);
return clp;
}
spin_unlock(&nfs_client_lock);
return NULL;
}
/*
* Find an nfs_client on the list that matches the initialisation data
* that is supplied.
*/
static struct nfs_client *nfs_match_client(const struct nfs_client_initdata *data)
{
struct nfs_client *clp;
@ -217,62 +324,39 @@ static struct nfs_client *__nfs_find_client(const struct sockaddr_in *addr, int
continue;
/* Different NFS versions cannot share the same nfs_client */
if (clp->cl_nfsversion != nfsversion)
if (clp->rpc_ops != data->rpc_ops)
continue;
if (memcmp(&clp->cl_addr.sin_addr, &addr->sin_addr,
sizeof(clp->cl_addr.sin_addr)) != 0)
if (clp->cl_proto != data->proto)
continue;
if (!match_port || clp->cl_addr.sin_port == addr->sin_port)
goto found;
/* Match the full socket address */
if (memcmp(&clp->cl_addr, data->addr, sizeof(clp->cl_addr)) != 0)
continue;
atomic_inc(&clp->cl_count);
return clp;
}
return NULL;
found:
atomic_inc(&clp->cl_count);
return clp;
}
/*
* Find a client by IP address and protocol version
* - returns NULL if no such client
*/
struct nfs_client *nfs_find_client(const struct sockaddr_in *addr, int nfsversion)
{
struct nfs_client *clp;
spin_lock(&nfs_client_lock);
clp = __nfs_find_client(addr, nfsversion, 0);
spin_unlock(&nfs_client_lock);
if (clp != NULL && clp->cl_cons_state != NFS_CS_READY) {
nfs_put_client(clp);
clp = NULL;
}
return clp;
}
/*
* Look up a client by IP address and protocol version
* - creates a new record if one doesn't yet exist
*/
static struct nfs_client *nfs_get_client(const char *hostname,
const struct sockaddr_in *addr,
int nfsversion)
static struct nfs_client *nfs_get_client(const struct nfs_client_initdata *cl_init)
{
struct nfs_client *clp, *new = NULL;
int error;
dprintk("--> nfs_get_client(%s,"NIPQUAD_FMT":%d,%d)\n",
hostname ?: "", NIPQUAD(addr->sin_addr),
addr->sin_port, nfsversion);
dprintk("--> nfs_get_client(%s,v%u)\n",
cl_init->hostname ?: "", cl_init->rpc_ops->version);
/* see if the client already exists */
do {
spin_lock(&nfs_client_lock);
clp = __nfs_find_client(addr, nfsversion, 1);
clp = nfs_match_client(cl_init);
if (clp)
goto found_client;
if (new)
@ -280,7 +364,7 @@ static struct nfs_client *nfs_get_client(const char *hostname,
spin_unlock(&nfs_client_lock);
new = nfs_alloc_client(hostname, addr, nfsversion);
new = nfs_alloc_client(cl_init);
} while (new);
return ERR_PTR(-ENOMEM);
@ -344,12 +428,16 @@ static void nfs_init_timeout_values(struct rpc_timeout *to, int proto,
switch (proto) {
case XPRT_TRANSPORT_TCP:
case XPRT_TRANSPORT_RDMA:
if (!to->to_initval)
if (to->to_initval == 0)
to->to_initval = 60 * HZ;
if (to->to_initval > NFS_MAX_TCP_TIMEOUT)
to->to_initval = NFS_MAX_TCP_TIMEOUT;
to->to_increment = to->to_initval;
to->to_maxval = to->to_initval + (to->to_increment * to->to_retries);
if (to->to_maxval > NFS_MAX_TCP_TIMEOUT)
to->to_maxval = NFS_MAX_TCP_TIMEOUT;
if (to->to_maxval < to->to_initval)
to->to_maxval = to->to_initval;
to->to_exponential = 0;
break;
case XPRT_TRANSPORT_UDP:
@ -367,19 +455,17 @@ static void nfs_init_timeout_values(struct rpc_timeout *to, int proto,
/*
* Create an RPC client handle
*/
static int nfs_create_rpc_client(struct nfs_client *clp, int proto,
unsigned int timeo,
unsigned int retrans,
rpc_authflavor_t flavor,
int flags)
static int nfs_create_rpc_client(struct nfs_client *clp,
const struct rpc_timeout *timeparms,
rpc_authflavor_t flavor,
int flags)
{
struct rpc_timeout timeparms;
struct rpc_clnt *clnt = NULL;
struct rpc_create_args args = {
.protocol = proto,
.protocol = clp->cl_proto,
.address = (struct sockaddr *)&clp->cl_addr,
.addrsize = sizeof(clp->cl_addr),
.timeout = &timeparms,
.addrsize = clp->cl_addrlen,
.timeout = timeparms,
.servername = clp->cl_hostname,
.program = &nfs_program,
.version = clp->rpc_ops->version,
@ -390,10 +476,6 @@ static int nfs_create_rpc_client(struct nfs_client *clp, int proto,
if (!IS_ERR(clp->cl_rpcclient))
return 0;
nfs_init_timeout_values(&timeparms, proto, timeo, retrans);
clp->retrans_timeo = timeparms.to_initval;
clp->retrans_count = timeparms.to_retries;
clnt = rpc_create(&args);
if (IS_ERR(clnt)) {
dprintk("%s: cannot create RPC client. Error = %ld\n",
@ -411,7 +493,7 @@ static int nfs_create_rpc_client(struct nfs_client *clp, int proto,
static void nfs_destroy_server(struct nfs_server *server)
{
if (!(server->flags & NFS_MOUNT_NONLM))
lockd_down(); /* release rpc.lockd */
nlmclnt_done(server->nlm_host);
}
/*
@ -419,20 +501,29 @@ static void nfs_destroy_server(struct nfs_server *server)
*/
static int nfs_start_lockd(struct nfs_server *server)
{
int error = 0;
struct nlm_host *host;
struct nfs_client *clp = server->nfs_client;
struct nlmclnt_initdata nlm_init = {
.hostname = clp->cl_hostname,
.address = (struct sockaddr *)&clp->cl_addr,
.addrlen = clp->cl_addrlen,
.protocol = server->flags & NFS_MOUNT_TCP ?
IPPROTO_TCP : IPPROTO_UDP,
.nfs_version = clp->rpc_ops->version,
};
if (server->nfs_client->cl_nfsversion > 3)
goto out;
if (nlm_init.nfs_version > 3)
return 0;
if (server->flags & NFS_MOUNT_NONLM)
goto out;
error = lockd_up((server->flags & NFS_MOUNT_TCP) ?
IPPROTO_TCP : IPPROTO_UDP);
if (error < 0)
server->flags |= NFS_MOUNT_NONLM;
else
server->destroy = nfs_destroy_server;
out:
return error;
return 0;
host = nlmclnt_init(&nlm_init);
if (IS_ERR(host))
return PTR_ERR(host);
server->nlm_host = host;
server->destroy = nfs_destroy_server;
return 0;
}
/*
@ -441,7 +532,7 @@ static int nfs_start_lockd(struct nfs_server *server)
#ifdef CONFIG_NFS_V3_ACL
static void nfs_init_server_aclclient(struct nfs_server *server)
{
if (server->nfs_client->cl_nfsversion != 3)
if (server->nfs_client->rpc_ops->version != 3)
goto out_noacl;
if (server->flags & NFS_MOUNT_NOACL)
goto out_noacl;
@ -468,7 +559,9 @@ static inline void nfs_init_server_aclclient(struct nfs_server *server)
/*
* Create a general RPC client
*/
static int nfs_init_server_rpcclient(struct nfs_server *server, rpc_authflavor_t pseudoflavour)
static int nfs_init_server_rpcclient(struct nfs_server *server,
const struct rpc_timeout *timeo,
rpc_authflavor_t pseudoflavour)
{
struct nfs_client *clp = server->nfs_client;
@ -478,6 +571,11 @@ static int nfs_init_server_rpcclient(struct nfs_server *server, rpc_authflavor_t
return PTR_ERR(server->client);
}
memcpy(&server->client->cl_timeout_default,
timeo,
sizeof(server->client->cl_timeout_default));
server->client->cl_timeout = &server->client->cl_timeout_default;
if (pseudoflavour != clp->cl_rpcclient->cl_auth->au_flavor) {
struct rpc_auth *auth;
@ -502,6 +600,7 @@ static int nfs_init_server_rpcclient(struct nfs_server *server, rpc_authflavor_t
* Initialise an NFS2 or NFS3 client
*/
static int nfs_init_client(struct nfs_client *clp,
const struct rpc_timeout *timeparms,
const struct nfs_parsed_mount_data *data)
{
int error;
@ -512,18 +611,11 @@ static int nfs_init_client(struct nfs_client *clp,
return 0;
}
/* Check NFS protocol revision and initialize RPC op vector */
clp->rpc_ops = &nfs_v2_clientops;
#ifdef CONFIG_NFS_V3
if (clp->cl_nfsversion == 3)
clp->rpc_ops = &nfs_v3_clientops;
#endif
/*
* Create a client RPC handle for doing FSSTAT with UNIX auth only
* - RFC 2623, sec 2.3.2
*/
error = nfs_create_rpc_client(clp, data->nfs_server.protocol,
data->timeo, data->retrans, RPC_AUTH_UNIX, 0);
error = nfs_create_rpc_client(clp, timeparms, RPC_AUTH_UNIX, 0);
if (error < 0)
goto error;
nfs_mark_client_ready(clp, NFS_CS_READY);
@ -541,25 +633,34 @@ static int nfs_init_client(struct nfs_client *clp,
static int nfs_init_server(struct nfs_server *server,
const struct nfs_parsed_mount_data *data)
{
struct nfs_client_initdata cl_init = {
.hostname = data->nfs_server.hostname,
.addr = (const struct sockaddr *)&data->nfs_server.address,
.addrlen = data->nfs_server.addrlen,
.rpc_ops = &nfs_v2_clientops,
.proto = data->nfs_server.protocol,
};
struct rpc_timeout timeparms;
struct nfs_client *clp;
int error, nfsvers = 2;
int error;
dprintk("--> nfs_init_server()\n");
#ifdef CONFIG_NFS_V3
if (data->flags & NFS_MOUNT_VER3)
nfsvers = 3;
cl_init.rpc_ops = &nfs_v3_clientops;
#endif
/* Allocate or find a client reference we can use */
clp = nfs_get_client(data->nfs_server.hostname,
&data->nfs_server.address, nfsvers);
clp = nfs_get_client(&cl_init);
if (IS_ERR(clp)) {
dprintk("<-- nfs_init_server() = error %ld\n", PTR_ERR(clp));
return PTR_ERR(clp);
}
error = nfs_init_client(clp, data);
nfs_init_timeout_values(&timeparms, data->nfs_server.protocol,
data->timeo, data->retrans);
error = nfs_init_client(clp, &timeparms, data);
if (error < 0)
goto error;
@ -583,7 +684,7 @@ static int nfs_init_server(struct nfs_server *server,
if (error < 0)
goto error;
error = nfs_init_server_rpcclient(server, data->auth_flavors[0]);
error = nfs_init_server_rpcclient(server, &timeparms, data->auth_flavors[0]);
if (error < 0)
goto error;
@ -729,6 +830,9 @@ static struct nfs_server *nfs_alloc_server(void)
INIT_LIST_HEAD(&server->client_link);
INIT_LIST_HEAD(&server->master_link);
init_waitqueue_head(&server->active_wq);
atomic_set(&server->active, 0);
server->io_stats = nfs_alloc_iostats();
if (!server->io_stats) {
kfree(server);
@ -840,7 +944,7 @@ struct nfs_server *nfs_create_server(const struct nfs_parsed_mount_data *data,
* Initialise an NFS4 client record
*/
static int nfs4_init_client(struct nfs_client *clp,
int proto, int timeo, int retrans,
const struct rpc_timeout *timeparms,
const char *ip_addr,
rpc_authflavor_t authflavour)
{
@ -855,7 +959,7 @@ static int nfs4_init_client(struct nfs_client *clp,
/* Check NFS protocol revision and initialize RPC op vector */
clp->rpc_ops = &nfs_v4_clientops;
error = nfs_create_rpc_client(clp, proto, timeo, retrans, authflavour,
error = nfs_create_rpc_client(clp, timeparms, authflavour,
RPC_CLNT_CREATE_DISCRTRY);
if (error < 0)
goto error;
@ -882,23 +986,32 @@ static int nfs4_init_client(struct nfs_client *clp,
* Set up an NFS4 client
*/
static int nfs4_set_client(struct nfs_server *server,
const char *hostname, const struct sockaddr_in *addr,
const char *hostname,
const struct sockaddr *addr,
const size_t addrlen,
const char *ip_addr,
rpc_authflavor_t authflavour,
int proto, int timeo, int retrans)
int proto, const struct rpc_timeout *timeparms)
{
struct nfs_client_initdata cl_init = {
.hostname = hostname,
.addr = addr,
.addrlen = addrlen,
.rpc_ops = &nfs_v4_clientops,
.proto = proto,
};
struct nfs_client *clp;
int error;
dprintk("--> nfs4_set_client()\n");
/* Allocate or find a client reference we can use */
clp = nfs_get_client(hostname, addr, 4);
clp = nfs_get_client(&cl_init);
if (IS_ERR(clp)) {
error = PTR_ERR(clp);
goto error;
}
error = nfs4_init_client(clp, proto, timeo, retrans, ip_addr, authflavour);
error = nfs4_init_client(clp, timeparms, ip_addr, authflavour);
if (error < 0)
goto error_put;
@ -919,10 +1032,26 @@ static int nfs4_set_client(struct nfs_server *server,
static int nfs4_init_server(struct nfs_server *server,
const struct nfs_parsed_mount_data *data)
{
struct rpc_timeout timeparms;
int error;
dprintk("--> nfs4_init_server()\n");
nfs_init_timeout_values(&timeparms, data->nfs_server.protocol,
data->timeo, data->retrans);
/* Get a client record */
error = nfs4_set_client(server,
data->nfs_server.hostname,
(const struct sockaddr *)&data->nfs_server.address,
data->nfs_server.addrlen,
data->client_address,
data->auth_flavors[0],
data->nfs_server.protocol,
&timeparms);
if (error < 0)
goto error;
/* Initialise the client representation from the mount data */
server->flags = data->flags & NFS_MOUNT_FLAGMASK;
server->caps |= NFS_CAP_ATOMIC_OPEN;
@ -937,8 +1066,9 @@ static int nfs4_init_server(struct nfs_server *server,
server->acdirmin = data->acdirmin * HZ;
server->acdirmax = data->acdirmax * HZ;
error = nfs_init_server_rpcclient(server, data->auth_flavors[0]);
error = nfs_init_server_rpcclient(server, &timeparms, data->auth_flavors[0]);
error:
/* Done */
dprintk("<-- nfs4_init_server() = %d\n", error);
return error;
@ -961,17 +1091,6 @@ struct nfs_server *nfs4_create_server(const struct nfs_parsed_mount_data *data,
if (!server)
return ERR_PTR(-ENOMEM);
/* Get a client record */
error = nfs4_set_client(server,
data->nfs_server.hostname,
&data->nfs_server.address,
data->client_address,
data->auth_flavors[0],
data->nfs_server.protocol,
data->timeo, data->retrans);
if (error < 0)
goto error;
/* set up the general RPC client */
error = nfs4_init_server(server, data);
if (error < 0)
@ -1039,12 +1158,13 @@ struct nfs_server *nfs4_create_referral_server(struct nfs_clone_mount *data,
/* Get a client representation.
* Note: NFSv4 always uses TCP, */
error = nfs4_set_client(server, data->hostname, data->addr,
parent_client->cl_ipaddr,
data->authflavor,
parent_server->client->cl_xprt->prot,
parent_client->retrans_timeo,
parent_client->retrans_count);
error = nfs4_set_client(server, data->hostname,
data->addr,
data->addrlen,
parent_client->cl_ipaddr,
data->authflavor,
parent_server->client->cl_xprt->prot,
parent_server->client->cl_timeout);
if (error < 0)
goto error;
@ -1052,7 +1172,7 @@ struct nfs_server *nfs4_create_referral_server(struct nfs_clone_mount *data,
nfs_server_copy_userdata(server, parent_server);
server->caps |= NFS_CAP_ATOMIC_OPEN;
error = nfs_init_server_rpcclient(server, data->authflavor);
error = nfs_init_server_rpcclient(server, parent_server->client->cl_timeout, data->authflavor);
if (error < 0)
goto error;
@ -1121,7 +1241,9 @@ struct nfs_server *nfs_clone_server(struct nfs_server *source,
server->fsid = fattr->fsid;
error = nfs_init_server_rpcclient(server, source->client->cl_auth->au_flavor);
error = nfs_init_server_rpcclient(server,
source->client->cl_timeout,
source->client->cl_auth->au_flavor);
if (error < 0)
goto out_free_server;
if (!IS_ERR(source->client_acl))
@ -1263,10 +1385,10 @@ static int nfs_server_list_show(struct seq_file *m, void *v)
/* display one transport per line on subsequent lines */
clp = list_entry(v, struct nfs_client, cl_share_link);
seq_printf(m, "v%d %02x%02x%02x%02x %4hx %3d %s\n",
clp->cl_nfsversion,
NIPQUAD(clp->cl_addr.sin_addr),
ntohs(clp->cl_addr.sin_port),
seq_printf(m, "v%u %s %s %3d %s\n",
clp->rpc_ops->version,
rpc_peeraddr2str(clp->cl_rpcclient, RPC_DISPLAY_HEX_ADDR),
rpc_peeraddr2str(clp->cl_rpcclient, RPC_DISPLAY_HEX_PORT),
atomic_read(&clp->cl_count),
clp->cl_hostname);
@ -1342,10 +1464,10 @@ static int nfs_volume_list_show(struct seq_file *m, void *v)
(unsigned long long) server->fsid.major,
(unsigned long long) server->fsid.minor);
seq_printf(m, "v%d %02x%02x%02x%02x %4hx %-7s %-17s\n",
clp->cl_nfsversion,
NIPQUAD(clp->cl_addr.sin_addr),
ntohs(clp->cl_addr.sin_port),
seq_printf(m, "v%u %s %s %-7s %-17s\n",
clp->rpc_ops->version,
rpc_peeraddr2str(clp->cl_rpcclient, RPC_DISPLAY_HEX_ADDR),
rpc_peeraddr2str(clp->cl_rpcclient, RPC_DISPLAY_HEX_PORT),
dev,
fsid);

110
fs/nfs/delegation.c
View file

@ -125,6 +125,32 @@ void nfs_inode_reclaim_delegation(struct inode *inode, struct rpc_cred *cred, st
put_rpccred(oldcred);
}
static int nfs_do_return_delegation(struct inode *inode, struct nfs_delegation *delegation, int issync)
{
int res = 0;
res = nfs4_proc_delegreturn(inode, delegation->cred, &delegation->stateid, issync);
nfs_free_delegation(delegation);
return res;
}
static struct nfs_delegation *nfs_detach_delegation_locked(struct nfs_inode *nfsi, const nfs4_stateid *stateid)
{
struct nfs_delegation *delegation = rcu_dereference(nfsi->delegation);
if (delegation == NULL)
goto nomatch;
if (stateid != NULL && memcmp(delegation->stateid.data, stateid->data,
sizeof(delegation->stateid.data)) != 0)
goto nomatch;
list_del_rcu(&delegation->super_list);
nfsi->delegation_state = 0;
rcu_assign_pointer(nfsi->delegation, NULL);
return delegation;
nomatch:
return NULL;
}
/*
* Set up a delegation on an inode
*/
@ -133,6 +159,7 @@ int nfs_inode_set_delegation(struct inode *inode, struct rpc_cred *cred, struct
struct nfs_client *clp = NFS_SERVER(inode)->nfs_client;
struct nfs_inode *nfsi = NFS_I(inode);
struct nfs_delegation *delegation;
struct nfs_delegation *freeme = NULL;
int status = 0;
delegation = kmalloc(sizeof(*delegation), GFP_KERNEL);
@ -147,41 +174,45 @@ int nfs_inode_set_delegation(struct inode *inode, struct rpc_cred *cred, struct
delegation->inode = inode;
spin_lock(&clp->cl_lock);
if (rcu_dereference(nfsi->delegation) == NULL) {
list_add_rcu(&delegation->super_list, &clp->cl_delegations);
nfsi->delegation_state = delegation->type;
rcu_assign_pointer(nfsi->delegation, delegation);
delegation = NULL;
} else {
if (rcu_dereference(nfsi->delegation) != NULL) {
if (memcmp(&delegation->stateid, &nfsi->delegation->stateid,
sizeof(delegation->stateid)) != 0 ||
delegation->type != nfsi->delegation->type) {
printk("%s: server %u.%u.%u.%u, handed out a duplicate delegation!\n",
__FUNCTION__, NIPQUAD(clp->cl_addr.sin_addr));
status = -EIO;
sizeof(delegation->stateid)) == 0 &&
delegation->type == nfsi->delegation->type) {
goto out;
}
/*
* Deal with broken servers that hand out two
* delegations for the same file.
*/
dfprintk(FILE, "%s: server %s handed out "
"a duplicate delegation!\n",
__FUNCTION__, clp->cl_hostname);
if (delegation->type <= nfsi->delegation->type) {
freeme = delegation;
delegation = NULL;
goto out;
}
freeme = nfs_detach_delegation_locked(nfsi, NULL);
}
list_add_rcu(&delegation->super_list, &clp->cl_delegations);
nfsi->delegation_state = delegation->type;
rcu_assign_pointer(nfsi->delegation, delegation);
delegation = NULL;
/* Ensure we revalidate the attributes and page cache! */
spin_lock(&inode->i_lock);
nfsi->cache_validity |= NFS_INO_REVAL_FORCED;
spin_unlock(&inode->i_lock);
out:
spin_unlock(&clp->cl_lock);
if (delegation != NULL)
nfs_free_delegation(delegation);
if (freeme != NULL)
nfs_do_return_delegation(inode, freeme, 0);
return status;
}
static int nfs_do_return_delegation(struct inode *inode, struct nfs_delegation *delegation)
{
int res = 0;
res = nfs4_proc_delegreturn(inode, delegation->cred, &delegation->stateid);
nfs_free_delegation(delegation);
return res;
}
/* Sync all data to disk upon delegation return */
static void nfs_msync_inode(struct inode *inode)
{
@ -207,24 +238,28 @@ static int __nfs_inode_return_delegation(struct inode *inode, struct nfs_delegat
up_read(&clp->cl_sem);
nfs_msync_inode(inode);
return nfs_do_return_delegation(inode, delegation);
return nfs_do_return_delegation(inode, delegation, 1);
}
static struct nfs_delegation *nfs_detach_delegation_locked(struct nfs_inode *nfsi, const nfs4_stateid *stateid)
/*
* This function returns the delegation without reclaiming opens
* or protecting against delegation reclaims.
* It is therefore really only safe to be called from
* nfs4_clear_inode()
*/
void nfs_inode_return_delegation_noreclaim(struct inode *inode)
{
struct nfs_delegation *delegation = rcu_dereference(nfsi->delegation);
struct nfs_client *clp = NFS_SERVER(inode)->nfs_client;
struct nfs_inode *nfsi = NFS_I(inode);
struct nfs_delegation *delegation;
if (delegation == NULL)
goto nomatch;
if (stateid != NULL && memcmp(delegation->stateid.data, stateid->data,
sizeof(delegation->stateid.data)) != 0)
goto nomatch;
list_del_rcu(&delegation->super_list);
nfsi->delegation_state = 0;
rcu_assign_pointer(nfsi->delegation, NULL);
return delegation;
nomatch:
return NULL;
if (rcu_dereference(nfsi->delegation) != NULL) {
spin_lock(&clp->cl_lock);
delegation = nfs_detach_delegation_locked(nfsi, NULL);
spin_unlock(&clp->cl_lock);
if (delegation != NULL)
nfs_do_return_delegation(inode, delegation, 0);
}
}
int nfs_inode_return_delegation(struct inode *inode)
@ -314,8 +349,9 @@ void nfs_expire_all_delegations(struct nfs_client *clp)
__module_get(THIS_MODULE);
atomic_inc(&clp->cl_count);
task = kthread_run(nfs_do_expire_all_delegations, clp,
"%u.%u.%u.%u-delegreturn",
NIPQUAD(clp->cl_addr.sin_addr));
"%s-delegreturn",
rpc_peeraddr2str(clp->cl_rpcclient,
RPC_DISPLAY_ADDR));
if (!IS_ERR(task))
return;
nfs_put_client(clp);
@ -386,7 +422,7 @@ static int recall_thread(void *data)
nfs_msync_inode(inode);
if (delegation != NULL)
nfs_do_return_delegation(inode, delegation);
nfs_do_return_delegation(inode, delegation, 1);
iput(inode);
module_put_and_exit(0);
}

3
fs/nfs/delegation.h
View file

@ -29,6 +29,7 @@ int nfs_inode_set_delegation(struct inode *inode, struct rpc_cred *cred, struct
void nfs_inode_reclaim_delegation(struct inode *inode, struct rpc_cred *cred, struct nfs_openres *res);
int nfs_inode_return_delegation(struct inode *inode);
int nfs_async_inode_return_delegation(struct inode *inode, const nfs4_stateid *stateid);
void nfs_inode_return_delegation_noreclaim(struct inode *inode);
struct inode *nfs_delegation_find_inode(struct nfs_client *clp, const struct nfs_fh *fhandle);
void nfs_return_all_delegations(struct super_block *sb);
@ -39,7 +40,7 @@ void nfs_delegation_mark_reclaim(struct nfs_client *clp);
void nfs_delegation_reap_unclaimed(struct nfs_client *clp);
/* NFSv4 delegation-related procedures */
int nfs4_proc_delegreturn(struct inode *inode, struct rpc_cred *cred, const nfs4_stateid *stateid);
int nfs4_proc_delegreturn(struct inode *inode, struct rpc_cred *cred, const nfs4_stateid *stateid, int issync);
int nfs4_open_delegation_recall(struct nfs_open_context *ctx, struct nfs4_state *state, const nfs4_stateid *stateid);
int nfs4_lock_delegation_recall(struct nfs4_state *state, struct file_lock *fl);
int nfs4_copy_delegation_stateid(nfs4_stateid *dst, struct inode *inode);

65
fs/nfs/dir.c
View file

@ -192,7 +192,7 @@ int nfs_readdir_filler(nfs_readdir_descriptor_t *desc, struct page *page)
/* We requested READDIRPLUS, but the server doesn't grok it */
if (error == -ENOTSUPP && desc->plus) {
NFS_SERVER(inode)->caps &= ~NFS_CAP_READDIRPLUS;
clear_bit(NFS_INO_ADVISE_RDPLUS, &NFS_FLAGS(inode));
clear_bit(NFS_INO_ADVISE_RDPLUS, &NFS_I(inode)->flags);
desc->plus = 0;
goto again;
}
@ -537,12 +537,6 @@ static int nfs_readdir(struct file *filp, void *dirent, filldir_t filldir)
lock_kernel();
res = nfs_revalidate_mapping_nolock(inode, filp->f_mapping);
if (res < 0) {
unlock_kernel();
return res;
}
/*
* filp->f_pos points to the dirent entry number.
* *desc->dir_cookie has the cookie for the next entry. We have
@ -564,6 +558,10 @@ static int nfs_readdir(struct file *filp, void *dirent, filldir_t filldir)
desc->entry = &my_entry;
nfs_block_sillyrename(dentry);
res = nfs_revalidate_mapping_nolock(inode, filp->f_mapping);
if (res < 0)
goto out;
while(!desc->entry->eof) {
res = readdir_search_pagecache(desc);
@ -579,7 +577,7 @@ static int nfs_readdir(struct file *filp, void *dirent, filldir_t filldir)
break;
}
if (res == -ETOOSMALL && desc->plus) {
clear_bit(NFS_INO_ADVISE_RDPLUS, &NFS_FLAGS(inode));
clear_bit(NFS_INO_ADVISE_RDPLUS, &NFS_I(inode)->flags);
nfs_zap_caches(inode);
desc->plus = 0;
desc->entry->eof = 0;
@ -594,6 +592,7 @@ static int nfs_readdir(struct file *filp, void *dirent, filldir_t filldir)
break;
}
}
out:
nfs_unblock_sillyrename(dentry);
unlock_kernel();
if (res > 0)
@ -639,6 +638,21 @@ static int nfs_fsync_dir(struct file *filp, struct dentry *dentry, int datasync)
return 0;
}
/**
* nfs_force_lookup_revalidate - Mark the directory as having changed
* @dir - pointer to directory inode
*
* This forces the revalidation code in nfs_lookup_revalidate() to do a
* full lookup on all child dentries of 'dir' whenever a change occurs
* on the server that might have invalidated our dcache.
*
* The caller should be holding dir->i_lock
*/
void nfs_force_lookup_revalidate(struct inode *dir)
{
NFS_I(dir)->cache_change_attribute = jiffies;
}
/*
* A check for whether or not the parent directory has changed.
* In the case it has, we assume that the dentries are untrustworthy
@ -827,6 +841,10 @@ static int nfs_dentry_delete(struct dentry *dentry)
dentry->d_parent->d_name.name, dentry->d_name.name,
dentry->d_flags);
/* Unhash any dentry with a stale inode */
if (dentry->d_inode != NULL && NFS_STALE(dentry->d_inode))
return 1;
if (dentry->d_flags & DCACHE_NFSFS_RENAMED) {
/* Unhash it, so that ->d_iput() would be called */
return 1;
@ -846,7 +864,6 @@ static int nfs_dentry_delete(struct dentry *dentry)
*/
static void nfs_dentry_iput(struct dentry *dentry, struct inode *inode)
{
nfs_inode_return_delegation(inode);
if (S_ISDIR(inode->i_mode))
/* drop any readdir cache as it could easily be old */
NFS_I(inode)->cache_validity |= NFS_INO_INVALID_DATA;
@ -1268,6 +1285,12 @@ static int nfs_mkdir(struct inode *dir, struct dentry *dentry, int mode)
return error;
}
static void nfs_dentry_handle_enoent(struct dentry *dentry)
{
if (dentry->d_inode != NULL && !d_unhashed(dentry))
d_delete(dentry);
}
static int nfs_rmdir(struct inode *dir, struct dentry *dentry)
{
int error;
@ -1280,6 +1303,8 @@ static int nfs_rmdir(struct inode *dir, struct dentry *dentry)
/* Ensure the VFS deletes this inode */
if (error == 0 && dentry->d_inode != NULL)
clear_nlink(dentry->d_inode);
else if (error == -ENOENT)
nfs_dentry_handle_enoent(dentry);
unlock_kernel();
return error;
@ -1386,6 +1411,8 @@ static int nfs_safe_remove(struct dentry *dentry)
nfs_mark_for_revalidate(inode);
} else
error = NFS_PROTO(dir)->remove(dir, &dentry->d_name);
if (error == -ENOENT)
nfs_dentry_handle_enoent(dentry);
out:
return error;
}
@ -1422,7 +1449,7 @@ static int nfs_unlink(struct inode *dir, struct dentry *dentry)
spin_unlock(&dentry->d_lock);
spin_unlock(&dcache_lock);
error = nfs_safe_remove(dentry);
if (!error) {
if (!error || error == -ENOENT) {
nfs_set_verifier(dentry, nfs_save_change_attribute(dir));
} else if (need_rehash)
d_rehash(dentry);
@ -1635,7 +1662,8 @@ static int nfs_rename(struct inode *old_dir, struct dentry *old_dentry,
d_move(old_dentry, new_dentry);
nfs_set_verifier(new_dentry,
nfs_save_change_attribute(new_dir));
}
} else if (error == -ENOENT)
nfs_dentry_handle_enoent(old_dentry);
/* new dentry created? */
if (dentry)
@ -1666,13 +1694,19 @@ int nfs_access_cache_shrinker(int nr_to_scan, gfp_t gfp_mask)
restart:
spin_lock(&nfs_access_lru_lock);
list_for_each_entry(nfsi, &nfs_access_lru_list, access_cache_inode_lru) {
struct rw_semaphore *s_umount;
struct inode *inode;
if (nr_to_scan-- == 0)
break;
inode = igrab(&nfsi->vfs_inode);
if (inode == NULL)
s_umount = &nfsi->vfs_inode.i_sb->s_umount;
if (!down_read_trylock(s_umount))
continue;
inode = igrab(&nfsi->vfs_inode);
if (inode == NULL) {
up_read(s_umount);
continue;
}
spin_lock(&inode->i_lock);
if (list_empty(&nfsi->access_cache_entry_lru))
goto remove_lru_entry;
@ -1691,6 +1725,7 @@ int nfs_access_cache_shrinker(int nr_to_scan, gfp_t gfp_mask)
spin_unlock(&inode->i_lock);
spin_unlock(&nfs_access_lru_lock);
iput(inode);
up_read(s_umount);
goto restart;
}
spin_unlock(&nfs_access_lru_lock);
@ -1731,7 +1766,7 @@ static void __nfs_access_zap_cache(struct inode *inode)
void nfs_access_zap_cache(struct inode *inode)
{
/* Remove from global LRU init */
if (test_and_clear_bit(NFS_INO_ACL_LRU_SET, &NFS_FLAGS(inode))) {
if (test_and_clear_bit(NFS_INO_ACL_LRU_SET, &NFS_I(inode)->flags)) {
spin_lock(&nfs_access_lru_lock);
list_del_init(&NFS_I(inode)->access_cache_inode_lru);
spin_unlock(&nfs_access_lru_lock);
@ -1845,7 +1880,7 @@ static void nfs_access_add_cache(struct inode *inode, struct nfs_access_entry *s
smp_mb__after_atomic_inc();
/* Add inode to global LRU list */
if (!test_and_set_bit(NFS_INO_ACL_LRU_SET, &NFS_FLAGS(inode))) {
if (!test_and_set_bit(NFS_INO_ACL_LRU_SET, &NFS_I(inode)->flags)) {
spin_lock(&nfs_access_lru_lock);
list_add_tail(&NFS_I(inode)->access_cache_inode_lru, &nfs_access_lru_list);
spin_unlock(&nfs_access_lru_lock);

124
fs/nfs/direct.c
View file

@ -188,12 +188,17 @@ static void nfs_direct_req_release(struct nfs_direct_req *dreq)
static ssize_t nfs_direct_wait(struct nfs_direct_req *dreq)
{
ssize_t result = -EIOCBQUEUED;
struct rpc_clnt *clnt;
sigset_t oldset;
/* Async requests don't wait here */
if (dreq->iocb)
goto out;
clnt = NFS_CLIENT(dreq->inode);
rpc_clnt_sigmask(clnt, &oldset);
result = wait_for_completion_interruptible(&dreq->completion);
rpc_clnt_sigunmask(clnt, &oldset);
if (!result)
result = dreq->error;
@ -272,6 +277,16 @@ static ssize_t nfs_direct_read_schedule_segment(struct nfs_direct_req *dreq,
unsigned long user_addr = (unsigned long)iov->iov_base;
size_t count = iov->iov_len;
size_t rsize = NFS_SERVER(inode)->rsize;
struct rpc_task *task;
struct rpc_message msg = {
.rpc_cred = ctx->cred,
};
struct rpc_task_setup task_setup_data = {
.rpc_client = NFS_CLIENT(inode),
.rpc_message = &msg,
.callback_ops = &nfs_read_direct_ops,
.flags = RPC_TASK_ASYNC,
};
unsigned int pgbase;
int result;
ssize_t started = 0;
@ -311,7 +326,7 @@ static ssize_t nfs_direct_read_schedule_segment(struct nfs_direct_req *dreq,
data->req = (struct nfs_page *) dreq;
data->inode = inode;
data->cred = ctx->cred;
data->cred = msg.rpc_cred;
data->args.fh = NFS_FH(inode);
data->args.context = ctx;
data->args.offset = pos;
@ -321,14 +336,16 @@ static ssize_t nfs_direct_read_schedule_segment(struct nfs_direct_req *dreq,
data->res.fattr = &data->fattr;
data->res.eof = 0;
data->res.count = bytes;
msg.rpc_argp = &data->args;
msg.rpc_resp = &data->res;
rpc_init_task(&data->task, NFS_CLIENT(inode), RPC_TASK_ASYNC,
&nfs_read_direct_ops, data);
NFS_PROTO(inode)->read_setup(data);
task_setup_data.task = &data->task;
task_setup_data.callback_data = data;
NFS_PROTO(inode)->read_setup(data, &msg);
data->task.tk_cookie = (unsigned long) inode;
rpc_execute(&data->task);
task = rpc_run_task(&task_setup_data);
if (!IS_ERR(task))
rpc_put_task(task);
dprintk("NFS: %5u initiated direct read call "
"(req %s/%Ld, %zu bytes @ offset %Lu)\n",
@ -391,9 +408,7 @@ static ssize_t nfs_direct_read(struct kiocb *iocb, const struct iovec *iov,
unsigned long nr_segs, loff_t pos)
{
ssize_t result = 0;
sigset_t oldset;
struct inode *inode = iocb->ki_filp->f_mapping->host;
struct rpc_clnt *clnt = NFS_CLIENT(inode);
struct nfs_direct_req *dreq;
dreq = nfs_direct_req_alloc();
@ -405,11 +420,9 @@ static ssize_t nfs_direct_read(struct kiocb *iocb, const struct iovec *iov,
if (!is_sync_kiocb(iocb))
dreq->iocb = iocb;
rpc_clnt_sigmask(clnt, &oldset);
result = nfs_direct_read_schedule_iovec(dreq, iov, nr_segs, pos);
if (!result)
result = nfs_direct_wait(dreq);
rpc_clnt_sigunmask(clnt, &oldset);
nfs_direct_req_release(dreq);
return result;
@ -431,6 +444,15 @@ static void nfs_direct_write_reschedule(struct nfs_direct_req *dreq)
struct inode *inode = dreq->inode;
struct list_head *p;
struct nfs_write_data *data;
struct rpc_task *task;
struct rpc_message msg = {
.rpc_cred = dreq->ctx->cred,
};
struct rpc_task_setup task_setup_data = {
.rpc_client = NFS_CLIENT(inode),
.callback_ops = &nfs_write_direct_ops,
.flags = RPC_TASK_ASYNC,
};
dreq->count = 0;
get_dreq(dreq);
@ -440,6 +462,9 @@ static void nfs_direct_write_reschedule(struct nfs_direct_req *dreq)
get_dreq(dreq);
/* Use stable writes */
data->args.stable = NFS_FILE_SYNC;
/*
* Reset data->res.
*/
@ -451,17 +476,18 @@ static void nfs_direct_write_reschedule(struct nfs_direct_req *dreq)
* Reuse data->task; data->args should not have changed
* since the original request was sent.
*/
rpc_init_task(&data->task, NFS_CLIENT(inode), RPC_TASK_ASYNC,
&nfs_write_direct_ops, data);
NFS_PROTO(inode)->write_setup(data, FLUSH_STABLE);
data->task.tk_priority = RPC_PRIORITY_NORMAL;
data->task.tk_cookie = (unsigned long) inode;
task_setup_data.task = &data->task;
task_setup_data.callback_data = data;
msg.rpc_argp = &data->args;
msg.rpc_resp = &data->res;
NFS_PROTO(inode)->write_setup(data, &msg);
/*
* We're called via an RPC callback, so BKL is already held.
*/
rpc_execute(&data->task);
task = rpc_run_task(&task_setup_data);
if (!IS_ERR(task))
rpc_put_task(task);
dprintk("NFS: %5u rescheduled direct write call (req %s/%Ld, %u bytes @ offset %Lu)\n",
data->task.tk_pid,
@ -504,9 +530,23 @@ static const struct rpc_call_ops nfs_commit_direct_ops = {
static void nfs_direct_commit_schedule(struct nfs_direct_req *dreq)
{
struct nfs_write_data *data = dreq->commit_data;
struct rpc_task *task;
struct rpc_message msg = {
.rpc_argp = &data->args,
.rpc_resp = &data->res,
.rpc_cred = dreq->ctx->cred,
};
struct rpc_task_setup task_setup_data = {
.task = &data->task,
.rpc_client = NFS_CLIENT(dreq->inode),
.rpc_message = &msg,
.callback_ops = &nfs_commit_direct_ops,
.callback_data = data,
.flags = RPC_TASK_ASYNC,
};
data->inode = dreq->inode;
data->cred = dreq->ctx->cred;
data->cred = msg.rpc_cred;
data->args.fh = NFS_FH(data->inode);
data->args.offset = 0;
@ -515,18 +555,16 @@ static void nfs_direct_commit_schedule(struct nfs_direct_req *dreq)
data->res.fattr = &data->fattr;
data->res.verf = &data->verf;
rpc_init_task(&data->task, NFS_CLIENT(dreq->inode), RPC_TASK_ASYNC,
&nfs_commit_direct_ops, data);
NFS_PROTO(data->inode)->commit_setup(data, 0);
NFS_PROTO(data->inode)->commit_setup(data, &msg);
data->task.tk_priority = RPC_PRIORITY_NORMAL;
data->task.tk_cookie = (unsigned long)data->inode;
/* Note: task.tk_ops->rpc_release will free dreq->commit_data */
dreq->commit_data = NULL;
dprintk("NFS: %5u initiated commit call\n", data->task.tk_pid);
rpc_execute(&data->task);
task = rpc_run_task(&task_setup_data);
if (!IS_ERR(task))
rpc_put_task(task);
}
static void nfs_direct_write_complete(struct nfs_direct_req *dreq, struct inode *inode)
@ -641,6 +679,16 @@ static ssize_t nfs_direct_write_schedule_segment(struct nfs_direct_req *dreq,
struct inode *inode = ctx->path.dentry->d_inode;
unsigned long user_addr = (unsigned long)iov->iov_base;
size_t count = iov->iov_len;
struct rpc_task *task;
struct rpc_message msg = {
.rpc_cred = ctx->cred,
};
struct rpc_task_setup task_setup_data = {
.rpc_client = NFS_CLIENT(inode),
.rpc_message = &msg,
.callback_ops = &nfs_write_direct_ops,
.flags = RPC_TASK_ASYNC,
};
size_t wsize = NFS_SERVER(inode)->wsize;
unsigned int pgbase;
int result;
@ -683,25 +731,27 @@ static ssize_t nfs_direct_write_schedule_segment(struct nfs_direct_req *dreq,
data->req = (struct nfs_page *) dreq;
data->inode = inode;
data->cred = ctx->cred;
data->cred = msg.rpc_cred;
data->args.fh = NFS_FH(inode);
data->args.context = ctx;
data->args.offset = pos;
data->args.pgbase = pgbase;
data->args.pages = data->pagevec;
data->args.count = bytes;
data->args.stable = sync;
data->res.fattr = &data->fattr;
data->res.count = bytes;
data->res.verf = &data->verf;
rpc_init_task(&data->task, NFS_CLIENT(inode), RPC_TASK_ASYNC,
&nfs_write_direct_ops, data);
NFS_PROTO(inode)->write_setup(data, sync);
task_setup_data.task = &data->task;
task_setup_data.callback_data = data;
msg.rpc_argp = &data->args;
msg.rpc_resp = &data->res;
NFS_PROTO(inode)->write_setup(data, &msg);
data->task.tk_priority = RPC_PRIORITY_NORMAL;
data->task.tk_cookie = (unsigned long) inode;
rpc_execute(&data->task);
task = rpc_run_task(&task_setup_data);
if (!IS_ERR(task))
rpc_put_task(task);
dprintk("NFS: %5u initiated direct write call "
"(req %s/%Ld, %zu bytes @ offset %Lu)\n",
@ -767,12 +817,10 @@ static ssize_t nfs_direct_write(struct kiocb *iocb, const struct iovec *iov,
size_t count)
{
ssize_t result = 0;
sigset_t oldset;
struct inode *inode = iocb->ki_filp->f_mapping->host;
struct rpc_clnt *clnt = NFS_CLIENT(inode);
struct nfs_direct_req *dreq;
size_t wsize = NFS_SERVER(inode)->wsize;
int sync = 0;
int sync = NFS_UNSTABLE;
dreq = nfs_direct_req_alloc();
if (!dreq)
@ -780,18 +828,16 @@ static ssize_t nfs_direct_write(struct kiocb *iocb, const struct iovec *iov,
nfs_alloc_commit_data(dreq);
if (dreq->commit_data == NULL || count < wsize)
sync = FLUSH_STABLE;
sync = NFS_FILE_SYNC;
dreq->inode = inode;
dreq->ctx = get_nfs_open_context(nfs_file_open_context(iocb->ki_filp));
if (!is_sync_kiocb(iocb))
dreq->iocb = iocb;
rpc_clnt_sigmask(clnt, &oldset);
result = nfs_direct_write_schedule_iovec(dreq, iov, nr_segs, pos, sync);
if (!result)
result = nfs_direct_wait(dreq);
rpc_clnt_sigunmask(clnt, &oldset);
nfs_direct_req_release(dreq);
return result;

42
fs/nfs/file.c
View file

@ -349,7 +349,9 @@ static int nfs_write_end(struct file *file, struct address_space *mapping,
unlock_page(page);
page_cache_release(page);
return status < 0 ? status : copied;
if (status < 0)
return status;
return copied;
}
static void nfs_invalidate_page(struct page *page, unsigned long offset)
@ -392,35 +394,27 @@ static int nfs_vm_page_mkwrite(struct vm_area_struct *vma, struct page *page)
struct file *filp = vma->vm_file;
unsigned pagelen;
int ret = -EINVAL;
void *fsdata;
struct address_space *mapping;
loff_t offset;
lock_page(page);
mapping = page->mapping;
if (mapping != vma->vm_file->f_path.dentry->d_inode->i_mapping) {
unlock_page(page);
return -EINVAL;
}
if (mapping != vma->vm_file->f_path.dentry->d_inode->i_mapping)
goto out_unlock;
ret = 0;
pagelen = nfs_page_length(page);
offset = (loff_t)page->index << PAGE_CACHE_SHIFT;
if (pagelen == 0)
goto out_unlock;
ret = nfs_flush_incompatible(filp, page);
if (ret != 0)
goto out_unlock;
ret = nfs_updatepage(filp, page, 0, pagelen);
if (ret == 0)
ret = pagelen;
out_unlock:
unlock_page(page);
/*
* we can use mapping after releasing the page lock, because:
* we hold mmap_sem on the fault path, which should pin the vma
* which should pin the file, which pins the dentry which should
* hold a reference on inode.
*/
if (pagelen) {
struct page *page2 = NULL;
ret = nfs_write_begin(filp, mapping, offset, pagelen,
0, &page2, &fsdata);
if (!ret)
ret = nfs_write_end(filp, mapping, offset, pagelen,
pagelen, page2, fsdata);
}
return ret;
}

97
fs/nfs/idmap.c
View file

@ -72,39 +72,39 @@ module_param_call(idmap_cache_timeout, param_set_idmap_timeout, param_get_int,
&nfs_idmap_cache_timeout, 0644);
struct idmap_hashent {
unsigned long ih_expires;
__u32 ih_id;
int ih_namelen;
char ih_name[IDMAP_NAMESZ];
unsigned long ih_expires;
__u32 ih_id;
size_t ih_namelen;
char ih_name[IDMAP_NAMESZ];
};
struct idmap_hashtable {
__u8 h_type;
struct idmap_hashent h_entries[IDMAP_HASH_SZ];
__u8 h_type;
struct idmap_hashent h_entries[IDMAP_HASH_SZ];
};
struct idmap {
struct dentry *idmap_dentry;
wait_queue_head_t idmap_wq;
struct idmap_msg idmap_im;
struct mutex idmap_lock; /* Serializes upcalls */
struct mutex idmap_im_lock; /* Protects the hashtable */
struct idmap_hashtable idmap_user_hash;
struct idmap_hashtable idmap_group_hash;
struct dentry *idmap_dentry;
wait_queue_head_t idmap_wq;
struct idmap_msg idmap_im;
struct mutex idmap_lock; /* Serializes upcalls */
struct mutex idmap_im_lock; /* Protects the hashtable */
struct idmap_hashtable idmap_user_hash;
struct idmap_hashtable idmap_group_hash;
};
static ssize_t idmap_pipe_upcall(struct file *, struct rpc_pipe_msg *,
char __user *, size_t);
static ssize_t idmap_pipe_downcall(struct file *, const char __user *,
size_t);
static void idmap_pipe_destroy_msg(struct rpc_pipe_msg *);
static ssize_t idmap_pipe_upcall(struct file *, struct rpc_pipe_msg *,
char __user *, size_t);
static ssize_t idmap_pipe_downcall(struct file *, const char __user *,
size_t);
static void idmap_pipe_destroy_msg(struct rpc_pipe_msg *);
static unsigned int fnvhash32(const void *, size_t);
static struct rpc_pipe_ops idmap_upcall_ops = {
.upcall = idmap_pipe_upcall,
.downcall = idmap_pipe_downcall,
.destroy_msg = idmap_pipe_destroy_msg,
.upcall = idmap_pipe_upcall,
.downcall = idmap_pipe_downcall,
.destroy_msg = idmap_pipe_destroy_msg,
};
int
@ -115,19 +115,20 @@ nfs_idmap_new(struct nfs_client *clp)
BUG_ON(clp->cl_idmap != NULL);
if ((idmap = kzalloc(sizeof(*idmap), GFP_KERNEL)) == NULL)
return -ENOMEM;
idmap = kzalloc(sizeof(*idmap), GFP_KERNEL);
if (idmap == NULL)
return -ENOMEM;
idmap->idmap_dentry = rpc_mkpipe(clp->cl_rpcclient->cl_dentry, "idmap",
idmap, &idmap_upcall_ops, 0);
if (IS_ERR(idmap->idmap_dentry)) {
idmap->idmap_dentry = rpc_mkpipe(clp->cl_rpcclient->cl_dentry, "idmap",
idmap, &idmap_upcall_ops, 0);
if (IS_ERR(idmap->idmap_dentry)) {
error = PTR_ERR(idmap->idmap_dentry);
kfree(idmap);
return error;
}
mutex_init(&idmap->idmap_lock);
mutex_init(&idmap->idmap_im_lock);
mutex_init(&idmap->idmap_lock);
mutex_init(&idmap->idmap_im_lock);
init_waitqueue_head(&idmap->idmap_wq);
idmap->idmap_user_hash.h_type = IDMAP_TYPE_USER;
idmap->idmap_group_hash.h_type = IDMAP_TYPE_GROUP;
@ -192,7 +193,7 @@ idmap_lookup_id(struct idmap_hashtable *h, __u32 id)
* pretty trivial.
*/
static inline struct idmap_hashent *
idmap_alloc_name(struct idmap_hashtable *h, char *name, unsigned len)
idmap_alloc_name(struct idmap_hashtable *h, char *name, size_t len)
{
return idmap_name_hash(h, name, len);
}
@ -285,7 +286,7 @@ nfs_idmap_id(struct idmap *idmap, struct idmap_hashtable *h,
memset(im, 0, sizeof(*im));
mutex_unlock(&idmap->idmap_im_lock);
mutex_unlock(&idmap->idmap_lock);
return (ret);
return ret;
}
/*
@ -354,42 +355,40 @@ nfs_idmap_name(struct idmap *idmap, struct idmap_hashtable *h,
/* RPC pipefs upcall/downcall routines */
static ssize_t
idmap_pipe_upcall(struct file *filp, struct rpc_pipe_msg *msg,
char __user *dst, size_t buflen)
char __user *dst, size_t buflen)
{
char *data = (char *)msg->data + msg->copied;
ssize_t mlen = msg->len - msg->copied;
ssize_t left;
char *data = (char *)msg->data + msg->copied;
size_t mlen = min(msg->len, buflen);
unsigned long left;
if (mlen > buflen)
mlen = buflen;
left = copy_to_user(dst, data, mlen);
if (left < 0) {
msg->errno = left;
return left;
left = copy_to_user(dst, data, mlen);
if (left == mlen) {
msg->errno = -EFAULT;
return -EFAULT;
}
mlen -= left;
msg->copied += mlen;
msg->errno = 0;
return mlen;
return mlen;
}
static ssize_t
idmap_pipe_downcall(struct file *filp, const char __user *src, size_t mlen)
{
struct rpc_inode *rpci = RPC_I(filp->f_path.dentry->d_inode);
struct rpc_inode *rpci = RPC_I(filp->f_path.dentry->d_inode);
struct idmap *idmap = (struct idmap *)rpci->private;
struct idmap_msg im_in, *im = &idmap->idmap_im;
struct idmap_hashtable *h;
struct idmap_hashent *he = NULL;
int namelen_in;
size_t namelen_in;
int ret;
if (mlen != sizeof(im_in))
return (-ENOSPC);
if (mlen != sizeof(im_in))
return -ENOSPC;
if (copy_from_user(&im_in, src, mlen) != 0)
return (-EFAULT);
if (copy_from_user(&im_in, src, mlen) != 0)
return -EFAULT;
mutex_lock(&idmap->idmap_im_lock);
@ -487,7 +486,7 @@ static unsigned int fnvhash32(const void *buf, size_t buflen)
hash ^= (unsigned int)*p;
}
return (hash);
return hash;
}
int nfs_map_name_to_uid(struct nfs_client *clp, const char *name, size_t namelen, __u32 *uid)

34
fs/nfs/inode.c
View file

@ -192,7 +192,7 @@ void nfs_invalidate_atime(struct inode *inode)
*/
static void nfs_invalidate_inode(struct inode *inode)
{
set_bit(NFS_INO_STALE, &NFS_FLAGS(inode));
set_bit(NFS_INO_STALE, &NFS_I(inode)->flags);
nfs_zap_caches_locked(inode);
}
@ -229,7 +229,7 @@ nfs_init_locked(struct inode *inode, void *opaque)
struct nfs_find_desc *desc = (struct nfs_find_desc *)opaque;
struct nfs_fattr *fattr = desc->fattr;
NFS_FILEID(inode) = fattr->fileid;
set_nfs_fileid(inode, fattr->fileid);
nfs_copy_fh(NFS_FH(inode), desc->fh);
return 0;
}
@ -291,7 +291,7 @@ nfs_fhget(struct super_block *sb, struct nfs_fh *fh, struct nfs_fattr *fattr)
inode->i_fop = &nfs_dir_operations;
if (nfs_server_capable(inode, NFS_CAP_READDIRPLUS)
&& fattr->size <= NFS_LIMIT_READDIRPLUS)
set_bit(NFS_INO_ADVISE_RDPLUS, &NFS_FLAGS(inode));
set_bit(NFS_INO_ADVISE_RDPLUS, &NFS_I(inode)->flags);
/* Deal with crossing mountpoints */
if (!nfs_fsid_equal(&NFS_SB(sb)->fsid, &fattr->fsid)) {
if (fattr->valid & NFS_ATTR_FATTR_V4_REFERRAL)
@ -461,9 +461,18 @@ int nfs_getattr(struct vfsmount *mnt, struct dentry *dentry, struct kstat *stat)
int need_atime = NFS_I(inode)->cache_validity & NFS_INO_INVALID_ATIME;
int err;
/* Flush out writes to the server in order to update c/mtime */
if (S_ISREG(inode->i_mode))
/*
* Flush out writes to the server in order to update c/mtime.
*
* Hold the i_mutex to suspend application writes temporarily;
* this prevents long-running writing applications from blocking
* nfs_wb_nocommit.
*/
if (S_ISREG(inode->i_mode)) {
mutex_lock(&inode->i_mutex);
nfs_wb_nocommit(inode);
mutex_unlock(&inode->i_mutex);
}
/*
* We may force a getattr if the user cares about atime.
@ -659,7 +668,7 @@ __nfs_revalidate_inode(struct nfs_server *server, struct inode *inode)
if (status == -ESTALE) {
nfs_zap_caches(inode);
if (!S_ISDIR(inode->i_mode))
set_bit(NFS_INO_STALE, &NFS_FLAGS(inode));
set_bit(NFS_INO_STALE, &NFS_I(inode)->flags);
}
goto out;
}
@ -814,8 +823,9 @@ static void nfs_wcc_update_inode(struct inode *inode, struct nfs_fattr *fattr)
if (S_ISDIR(inode->i_mode))
nfsi->cache_validity |= NFS_INO_INVALID_DATA;
}
if (inode->i_size == fattr->pre_size && nfsi->npages == 0)
inode->i_size = fattr->size;
if (inode->i_size == nfs_size_to_loff_t(fattr->pre_size) &&
nfsi->npages == 0)
inode->i_size = nfs_size_to_loff_t(fattr->size);
}
}
@ -1019,7 +1029,8 @@ static int nfs_update_inode(struct inode *inode, struct nfs_fattr *fattr)
dprintk("NFS: mtime change on server for file %s/%ld\n",
inode->i_sb->s_id, inode->i_ino);
invalid |= NFS_INO_INVALID_ATTR|NFS_INO_INVALID_DATA;
nfsi->cache_change_attribute = now;
if (S_ISDIR(inode->i_mode))
nfs_force_lookup_revalidate(inode);
}
/* If ctime has changed we should definitely clear access+acl caches */
if (!timespec_equal(&inode->i_ctime, &fattr->ctime))
@ -1028,7 +1039,8 @@ static int nfs_update_inode(struct inode *inode, struct nfs_fattr *fattr)
dprintk("NFS: change_attr change on server for file %s/%ld\n",
inode->i_sb->s_id, inode->i_ino);
invalid |= NFS_INO_INVALID_ATTR|NFS_INO_INVALID_DATA|NFS_INO_INVALID_ACCESS|NFS_INO_INVALID_ACL;
nfsi->cache_change_attribute = now;
if (S_ISDIR(inode->i_mode))
nfs_force_lookup_revalidate(inode);
}
/* Check if our cached file size is stale */
@ -1133,7 +1145,7 @@ static int nfs_update_inode(struct inode *inode, struct nfs_fattr *fattr)
void nfs4_clear_inode(struct inode *inode)
{
/* If we are holding a delegation, return it! */
nfs_inode_return_delegation(inode);
nfs_inode_return_delegation_noreclaim(inode);
/* First call standard NFS clear_inode() code */
nfs_clear_inode(inode);
}

16
fs/nfs/internal.h
View file

@ -21,7 +21,8 @@ struct nfs_clone_mount {
struct nfs_fattr *fattr;
char *hostname;
char *mnt_path;
struct sockaddr_in *addr;
struct sockaddr *addr;
size_t addrlen;
rpc_authflavor_t authflavor;
};
@ -41,19 +42,19 @@ struct nfs_parsed_mount_data {
char *client_address;
struct {
struct sockaddr_in address;
struct sockaddr_storage address;
size_t addrlen;
char *hostname;
unsigned int program;
unsigned int version;
unsigned short port;
int protocol;
} mount_server;
struct {
struct sockaddr_in address;
struct sockaddr_storage address;
size_t addrlen;
char *hostname;
char *export_path;
unsigned int program;
int protocol;
} nfs_server;
};
@ -62,7 +63,8 @@ struct nfs_parsed_mount_data {
extern struct rpc_program nfs_program;
extern void nfs_put_client(struct nfs_client *);
extern struct nfs_client *nfs_find_client(const struct sockaddr_in *, int);
extern struct nfs_client *nfs_find_client(const struct sockaddr *, u32);
extern struct nfs_client *nfs_find_client_next(struct nfs_client *);
extern struct nfs_server *nfs_create_server(
const struct nfs_parsed_mount_data *,
struct nfs_fh *);
@ -160,6 +162,8 @@ extern struct rpc_stat nfs_rpcstat;
extern int __init register_nfs_fs(void);
extern void __exit unregister_nfs_fs(void);
extern void nfs_sb_active(struct nfs_server *server);
extern void nfs_sb_deactive(struct nfs_server *server);
/* namespace.c */
extern char *nfs_path(const char *base,

2
fs/nfs/namespace.c
View file

@ -188,7 +188,7 @@ static struct vfsmount *nfs_do_clone_mount(struct nfs_server *server,
{
#ifdef CONFIG_NFS_V4
struct vfsmount *mnt = NULL;
switch (server->nfs_client->cl_nfsversion) {
switch (server->nfs_client->rpc_ops->version) {
case 2:
case 3:
mnt = vfs_kern_mount(&nfs_xdev_fs_type, 0, devname, mountdata);

24
fs/nfs/nfs2xdr.c
View file

@ -262,7 +262,9 @@ static int
nfs_xdr_readres(struct rpc_rqst *req, __be32 *p, struct nfs_readres *res)
{
struct kvec *iov = req->rq_rcv_buf.head;
int status, count, recvd, hdrlen;
size_t hdrlen;
u32 count, recvd;
int status;
if ((status = ntohl(*p++)))
return -nfs_stat_to_errno(status);
@ -273,7 +275,7 @@ nfs_xdr_readres(struct rpc_rqst *req, __be32 *p, struct nfs_readres *res)
hdrlen = (u8 *) p - (u8 *) iov->iov_base;
if (iov->iov_len < hdrlen) {
dprintk("NFS: READ reply header overflowed:"
"length %d > %Zu\n", hdrlen, iov->iov_len);
"length %Zu > %Zu\n", hdrlen, iov->iov_len);
return -errno_NFSERR_IO;
} else if (iov->iov_len != hdrlen) {
dprintk("NFS: READ header is short. iovec will be shifted.\n");
@ -283,11 +285,11 @@ nfs_xdr_readres(struct rpc_rqst *req, __be32 *p, struct nfs_readres *res)
recvd = req->rq_rcv_buf.len - hdrlen;
if (count > recvd) {
dprintk("NFS: server cheating in read reply: "
"count %d > recvd %d\n", count, recvd);
"count %u > recvd %u\n", count, recvd);
count = recvd;
}
dprintk("RPC: readres OK count %d\n", count);
dprintk("RPC: readres OK count %u\n", count);
if (count < res->count)
res->count = count;
@ -423,9 +425,10 @@ nfs_xdr_readdirres(struct rpc_rqst *req, __be32 *p, void *dummy)
struct xdr_buf *rcvbuf = &req->rq_rcv_buf;
struct kvec *iov = rcvbuf->head;
struct page **page;
int hdrlen, recvd;
size_t hdrlen;
unsigned int pglen, recvd;
u32 len;
int status, nr;
unsigned int len, pglen;
__be32 *end, *entry, *kaddr;
if ((status = ntohl(*p++)))
@ -434,7 +437,7 @@ nfs_xdr_readdirres(struct rpc_rqst *req, __be32 *p, void *dummy)
hdrlen = (u8 *) p - (u8 *) iov->iov_base;
if (iov->iov_len < hdrlen) {
dprintk("NFS: READDIR reply header overflowed:"
"length %d > %Zu\n", hdrlen, iov->iov_len);
"length %Zu > %Zu\n", hdrlen, iov->iov_len);
return -errno_NFSERR_IO;
} else if (iov->iov_len != hdrlen) {
dprintk("NFS: READDIR header is short. iovec will be shifted.\n");
@ -576,7 +579,8 @@ nfs_xdr_readlinkres(struct rpc_rqst *req, __be32 *p, void *dummy)
{
struct xdr_buf *rcvbuf = &req->rq_rcv_buf;
struct kvec *iov = rcvbuf->head;
int hdrlen, len, recvd;
size_t hdrlen;
u32 len, recvd;
char *kaddr;
int status;
@ -584,14 +588,14 @@ nfs_xdr_readlinkres(struct rpc_rqst *req, __be32 *p, void *dummy)
return -nfs_stat_to_errno(status);
/* Convert length of symlink */
len = ntohl(*p++);
if (len >= rcvbuf->page_len || len <= 0) {
if (len >= rcvbuf->page_len) {
dprintk("nfs: server returned giant symlink!\n");
return -ENAMETOOLONG;
}
hdrlen = (u8 *) p - (u8 *) iov->iov_base;
if (iov->iov_len < hdrlen) {
dprintk("NFS: READLINK reply header overflowed:"
"length %d > %Zu\n", hdrlen, iov->iov_len);
"length %Zu > %Zu\n", hdrlen, iov->iov_len);
return -errno_NFSERR_IO;
} else if (iov->iov_len != hdrlen) {
dprintk("NFS: READLINK header is short. iovec will be shifted.\n");

45
fs/nfs/nfs3proc.c
View file

@ -732,16 +732,9 @@ static int nfs3_read_done(struct rpc_task *task, struct nfs_read_data *data)
return 0;
}
static void nfs3_proc_read_setup(struct nfs_read_data *data)
static void nfs3_proc_read_setup(struct nfs_read_data *data, struct rpc_message *msg)
{
struct rpc_message msg = {
.rpc_proc = &nfs3_procedures[NFS3PROC_READ],
.rpc_argp = &data->args,
.rpc_resp = &data->res,
.rpc_cred = data->cred,
};
rpc_call_setup(&data->task, &msg, 0);
msg->rpc_proc = &nfs3_procedures[NFS3PROC_READ];
}
static int nfs3_write_done(struct rpc_task *task, struct nfs_write_data *data)
@ -753,24 +746,9 @@ static int nfs3_write_done(struct rpc_task *task, struct nfs_write_data *data)
return 0;
}
static void nfs3_proc_write_setup(struct nfs_write_data *data, int how)
static void nfs3_proc_write_setup(struct nfs_write_data *data, struct rpc_message *msg)
{
struct rpc_message msg = {
.rpc_proc = &nfs3_procedures[NFS3PROC_WRITE],
.rpc_argp = &data->args,
.rpc_resp = &data->res,
.rpc_cred = data->cred,
};
data->args.stable = NFS_UNSTABLE;
if (how & FLUSH_STABLE) {
data->args.stable = NFS_FILE_SYNC;
if (NFS_I(data->inode)->ncommit)
data->args.stable = NFS_DATA_SYNC;
}
/* Finalize the task. */
rpc_call_setup(&data->task, &msg, 0);
msg->rpc_proc = &nfs3_procedures[NFS3PROC_WRITE];
}
static int nfs3_commit_done(struct rpc_task *task, struct nfs_write_data *data)
@ -781,22 +759,17 @@ static int nfs3_commit_done(struct rpc_task *task, struct nfs_write_data *data)
return 0;
}
static void nfs3_proc_commit_setup(struct nfs_write_data *data, int how)
static void nfs3_proc_commit_setup(struct nfs_write_data *data, struct rpc_message *msg)
{
struct rpc_message msg = {
.rpc_proc = &nfs3_procedures[NFS3PROC_COMMIT],
.rpc_argp = &data->args,
.rpc_resp = &data->res,
.rpc_cred = data->cred,
};
rpc_call_setup(&data->task, &msg, 0);
msg->rpc_proc = &nfs3_procedures[NFS3PROC_COMMIT];
}
static int
nfs3_proc_lock(struct file *filp, int cmd, struct file_lock *fl)
{
return nlmclnt_proc(filp->f_path.dentry->d_inode, cmd, fl);
struct inode *inode = filp->f_path.dentry->d_inode;
return nlmclnt_proc(NFS_SERVER(inode)->nlm_host, cmd, fl);
}
const struct nfs_rpc_ops nfs_v3_clientops = {

27
fs/nfs/nfs3xdr.c
View file

@ -506,9 +506,9 @@ nfs3_xdr_readdirres(struct rpc_rqst *req, __be32 *p, struct nfs3_readdirres *res
struct xdr_buf *rcvbuf = &req->rq_rcv_buf;
struct kvec *iov = rcvbuf->head;
struct page **page;
int hdrlen, recvd;
size_t hdrlen;
u32 len, recvd, pglen;
int status, nr;
unsigned int len, pglen;
__be32 *entry, *end, *kaddr;
status = ntohl(*p++);
@ -527,7 +527,7 @@ nfs3_xdr_readdirres(struct rpc_rqst *req, __be32 *p, struct nfs3_readdirres *res
hdrlen = (u8 *) p - (u8 *) iov->iov_base;
if (iov->iov_len < hdrlen) {
dprintk("NFS: READDIR reply header overflowed:"
"length %d > %Zu\n", hdrlen, iov->iov_len);
"length %Zu > %Zu\n", hdrlen, iov->iov_len);
return -errno_NFSERR_IO;
} else if (iov->iov_len != hdrlen) {
dprintk("NFS: READDIR header is short. iovec will be shifted.\n");
@ -549,7 +549,7 @@ nfs3_xdr_readdirres(struct rpc_rqst *req, __be32 *p, struct nfs3_readdirres *res
len = ntohl(*p++); /* string length */
p += XDR_QUADLEN(len) + 2; /* name + cookie */
if (len > NFS3_MAXNAMLEN) {
dprintk("NFS: giant filename in readdir (len %x)!\n",
dprintk("NFS: giant filename in readdir (len 0x%x)!\n",
len);
goto err_unmap;
}
@ -570,7 +570,7 @@ nfs3_xdr_readdirres(struct rpc_rqst *req, __be32 *p, struct nfs3_readdirres *res
len = ntohl(*p++);
if (len > NFS3_FHSIZE) {
dprintk("NFS: giant filehandle in "
"readdir (len %x)!\n", len);
"readdir (len 0x%x)!\n", len);
goto err_unmap;
}
p += XDR_QUADLEN(len);
@ -815,7 +815,8 @@ nfs3_xdr_readlinkres(struct rpc_rqst *req, __be32 *p, struct nfs_fattr *fattr)
{
struct xdr_buf *rcvbuf = &req->rq_rcv_buf;
struct kvec *iov = rcvbuf->head;
int hdrlen, len, recvd;
size_t hdrlen;
u32 len, recvd;
char *kaddr;
int status;
@ -827,7 +828,7 @@ nfs3_xdr_readlinkres(struct rpc_rqst *req, __be32 *p, struct nfs_fattr *fattr)
/* Convert length of symlink */
len = ntohl(*p++);
if (len >= rcvbuf->page_len || len <= 0) {
if (len >= rcvbuf->page_len) {
dprintk("nfs: server returned giant symlink!\n");
return -ENAMETOOLONG;
}
@ -835,7 +836,7 @@ nfs3_xdr_readlinkres(struct rpc_rqst *req, __be32 *p, struct nfs_fattr *fattr)
hdrlen = (u8 *) p - (u8 *) iov->iov_base;
if (iov->iov_len < hdrlen) {
dprintk("NFS: READLINK reply header overflowed:"
"length %d > %Zu\n", hdrlen, iov->iov_len);
"length %Zu > %Zu\n", hdrlen, iov->iov_len);
return -errno_NFSERR_IO;
} else if (iov->iov_len != hdrlen) {
dprintk("NFS: READLINK header is short. "
@ -863,7 +864,9 @@ static int
nfs3_xdr_readres(struct rpc_rqst *req, __be32 *p, struct nfs_readres *res)
{
struct kvec *iov = req->rq_rcv_buf.head;
int status, count, ocount, recvd, hdrlen;
size_t hdrlen;
u32 count, ocount, recvd;
int status;
status = ntohl(*p++);
p = xdr_decode_post_op_attr(p, res->fattr);
@ -871,7 +874,7 @@ nfs3_xdr_readres(struct rpc_rqst *req, __be32 *p, struct nfs_readres *res)
if (status != 0)
return -nfs_stat_to_errno(status);
/* Decode reply could and EOF flag. NFSv3 is somewhat redundant
/* Decode reply count and EOF flag. NFSv3 is somewhat redundant
* in that it puts the count both in the res struct and in the
* opaque data count. */
count = ntohl(*p++);
@ -886,7 +889,7 @@ nfs3_xdr_readres(struct rpc_rqst *req, __be32 *p, struct nfs_readres *res)
hdrlen = (u8 *) p - (u8 *) iov->iov_base;
if (iov->iov_len < hdrlen) {
dprintk("NFS: READ reply header overflowed:"
"length %d > %Zu\n", hdrlen, iov->iov_len);
"length %Zu > %Zu\n", hdrlen, iov->iov_len);
return -errno_NFSERR_IO;
} else if (iov->iov_len != hdrlen) {
dprintk("NFS: READ header is short. iovec will be shifted.\n");
@ -896,7 +899,7 @@ nfs3_xdr_readres(struct rpc_rqst *req, __be32 *p, struct nfs_readres *res)
recvd = req->rq_rcv_buf.len - hdrlen;
if (count > recvd) {
dprintk("NFS: server cheating in read reply: "
"count %d > recvd %d\n", count, recvd);
"count %u > recvd %u\n", count, recvd);
count = recvd;
res->eof = 0;
}

20
fs/nfs/nfs4namespace.c
View file

@ -114,10 +114,7 @@ static inline int valid_ipaddr4(const char *buf)
* nfs_follow_referral - set up mountpoint when hitting a referral on moved error
* @mnt_parent - mountpoint of parent directory
* @dentry - parent directory
* @fspath - fs path returned in fs_locations
* @mntpath - mount path to new server
* @hostname - hostname of new server
* @addr - host addr of new server
* @locations - array of NFSv4 server location information
*
*/
static struct vfsmount *nfs_follow_referral(const struct vfsmount *mnt_parent,
@ -131,7 +128,8 @@ static struct vfsmount *nfs_follow_referral(const struct vfsmount *mnt_parent,
.authflavor = NFS_SB(mnt_parent->mnt_sb)->client->cl_auth->au_flavor,
};
char *page = NULL, *page2 = NULL;
int loc, s, error;
unsigned int s;
int loc, error;
if (locations == NULL || locations->nlocations <= 0)
goto out;
@ -174,7 +172,10 @@ static struct vfsmount *nfs_follow_referral(const struct vfsmount *mnt_parent,
s = 0;
while (s < location->nservers) {
struct sockaddr_in addr = {};
struct sockaddr_in addr = {
.sin_family = AF_INET,
.sin_port = htons(NFS_PORT),
};
if (location->servers[s].len <= 0 ||
valid_ipaddr4(location->servers[s].data) < 0) {
@ -183,10 +184,9 @@ static struct vfsmount *nfs_follow_referral(const struct vfsmount *mnt_parent,
}
mountdata.hostname = location->servers[s].data;
addr.sin_addr.s_addr = in_aton(mountdata.hostname);
addr.sin_family = AF_INET;
addr.sin_port = htons(NFS_PORT);
mountdata.addr = &addr;
addr.sin_addr.s_addr = in_aton(mountdata.hostname),
mountdata.addr = (struct sockaddr *)&addr;
mountdata.addrlen = sizeof(addr);
snprintf(page, PAGE_SIZE, "%s:%s",
mountdata.hostname,

288
fs/nfs/nfs4proc.c
View file

@ -210,7 +210,7 @@ static void update_changeattr(struct inode *dir, struct nfs4_change_info *cinfo)
spin_lock(&dir->i_lock);
nfsi->cache_validity |= NFS_INO_INVALID_ATTR|NFS_INO_REVAL_PAGECACHE|NFS_INO_INVALID_DATA;
if (!cinfo->atomic || cinfo->before != nfsi->change_attr)
nfsi->cache_change_attribute = jiffies;
nfs_force_lookup_revalidate(dir);
nfsi->change_attr = cinfo->after;
spin_unlock(&dir->i_lock);
}
@ -718,19 +718,6 @@ int nfs4_open_delegation_recall(struct nfs_open_context *ctx, struct nfs4_state
return err;
}
static void nfs4_open_confirm_prepare(struct rpc_task *task, void *calldata)
{
struct nfs4_opendata *data = calldata;
struct rpc_message msg = {
.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_CONFIRM],
.rpc_argp = &data->c_arg,
.rpc_resp = &data->c_res,
.rpc_cred = data->owner->so_cred,
};
data->timestamp = jiffies;
rpc_call_setup(task, &msg, 0);
}
static void nfs4_open_confirm_done(struct rpc_task *task, void *calldata)
{
struct nfs4_opendata *data = calldata;
@ -767,7 +754,6 @@ static void nfs4_open_confirm_release(void *calldata)
}
static const struct rpc_call_ops nfs4_open_confirm_ops = {
.rpc_call_prepare = nfs4_open_confirm_prepare,
.rpc_call_done = nfs4_open_confirm_done,
.rpc_release = nfs4_open_confirm_release,
};
@ -779,12 +765,26 @@ static int _nfs4_proc_open_confirm(struct nfs4_opendata *data)
{
struct nfs_server *server = NFS_SERVER(data->dir->d_inode);
struct rpc_task *task;
struct rpc_message msg = {
.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_CONFIRM],
.rpc_argp = &data->c_arg,
.rpc_resp = &data->c_res,
.rpc_cred = data->owner->so_cred,
};
struct rpc_task_setup task_setup_data = {
.rpc_client = server->client,
.rpc_message = &msg,
.callback_ops = &nfs4_open_confirm_ops,
.callback_data = data,
.flags = RPC_TASK_ASYNC,
};
int status;
kref_get(&data->kref);
data->rpc_done = 0;
data->rpc_status = 0;
task = rpc_run_task(server->client, RPC_TASK_ASYNC, &nfs4_open_confirm_ops, data);
data->timestamp = jiffies;
task = rpc_run_task(&task_setup_data);
if (IS_ERR(task))
return PTR_ERR(task);
status = nfs4_wait_for_completion_rpc_task(task);
@ -801,13 +801,7 @@ static void nfs4_open_prepare(struct rpc_task *task, void *calldata)
{
struct nfs4_opendata *data = calldata;
struct nfs4_state_owner *sp = data->owner;
struct rpc_message msg = {
.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN],
.rpc_argp = &data->o_arg,
.rpc_resp = &data->o_res,
.rpc_cred = sp->so_cred,
};
if (nfs_wait_on_sequence(data->o_arg.seqid, task) != 0)
return;
/*
@ -832,11 +826,11 @@ static void nfs4_open_prepare(struct rpc_task *task, void *calldata)
data->o_arg.id = sp->so_owner_id.id;
data->o_arg.clientid = sp->so_client->cl_clientid;
if (data->o_arg.claim == NFS4_OPEN_CLAIM_PREVIOUS) {
msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_NOATTR];
task->tk_msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_NOATTR];
nfs_copy_fh(&data->o_res.fh, data->o_arg.fh);
}
data->timestamp = jiffies;
rpc_call_setup(task, &msg, 0);
rpc_call_start(task);
return;
out_no_action:
task->tk_action = NULL;
@ -908,13 +902,26 @@ static int _nfs4_proc_open(struct nfs4_opendata *data)
struct nfs_openargs *o_arg = &data->o_arg;
struct nfs_openres *o_res = &data->o_res;
struct rpc_task *task;
struct rpc_message msg = {
.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN],
.rpc_argp = o_arg,
.rpc_resp = o_res,
.rpc_cred = data->owner->so_cred,
};
struct rpc_task_setup task_setup_data = {
.rpc_client = server->client,
.rpc_message = &msg,
.callback_ops = &nfs4_open_ops,
.callback_data = data,
.flags = RPC_TASK_ASYNC,
};
int status;
kref_get(&data->kref);
data->rpc_done = 0;
data->rpc_status = 0;
data->cancelled = 0;
task = rpc_run_task(server->client, RPC_TASK_ASYNC, &nfs4_open_ops, data);
task = rpc_run_task(&task_setup_data);
if (IS_ERR(task))
return PTR_ERR(task);
status = nfs4_wait_for_completion_rpc_task(task);
@ -1244,12 +1251,6 @@ static void nfs4_close_prepare(struct rpc_task *task, void *data)
{
struct nfs4_closedata *calldata = data;
struct nfs4_state *state = calldata->state;
struct rpc_message msg = {
.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_CLOSE],
.rpc_argp = &calldata->arg,
.rpc_resp = &calldata->res,
.rpc_cred = state->owner->so_cred,
};
int clear_rd, clear_wr, clear_rdwr;
if (nfs_wait_on_sequence(calldata->arg.seqid, task) != 0)
@ -1276,14 +1277,14 @@ static void nfs4_close_prepare(struct rpc_task *task, void *data)
}
nfs_fattr_init(calldata->res.fattr);
if (test_bit(NFS_O_RDONLY_STATE, &state->flags) != 0) {
msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_DOWNGRADE];
task->tk_msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_DOWNGRADE];
calldata->arg.open_flags = FMODE_READ;
} else if (test_bit(NFS_O_WRONLY_STATE, &state->flags) != 0) {
msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_DOWNGRADE];
task->tk_msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_DOWNGRADE];
calldata->arg.open_flags = FMODE_WRITE;
}
calldata->timestamp = jiffies;
rpc_call_setup(task, &msg, 0);
rpc_call_start(task);
}
static const struct rpc_call_ops nfs4_close_ops = {
@ -1309,6 +1310,16 @@ int nfs4_do_close(struct path *path, struct nfs4_state *state, int wait)
struct nfs4_closedata *calldata;
struct nfs4_state_owner *sp = state->owner;
struct rpc_task *task;
struct rpc_message msg = {
.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_CLOSE],
.rpc_cred = state->owner->so_cred,
};
struct rpc_task_setup task_setup_data = {
.rpc_client = server->client,
.rpc_message = &msg,
.callback_ops = &nfs4_close_ops,
.flags = RPC_TASK_ASYNC,
};
int status = -ENOMEM;
calldata = kmalloc(sizeof(*calldata), GFP_KERNEL);
@ -1328,7 +1339,10 @@ int nfs4_do_close(struct path *path, struct nfs4_state *state, int wait)
calldata->path.mnt = mntget(path->mnt);
calldata->path.dentry = dget(path->dentry);
task = rpc_run_task(server->client, RPC_TASK_ASYNC, &nfs4_close_ops, calldata);
msg.rpc_argp = &calldata->arg,
msg.rpc_resp = &calldata->res,
task_setup_data.callback_data = calldata;
task = rpc_run_task(&task_setup_data);
if (IS_ERR(task))
return PTR_ERR(task);
status = 0;
@ -2414,18 +2428,10 @@ static int nfs4_read_done(struct rpc_task *task, struct nfs_read_data *data)
return 0;
}
static void nfs4_proc_read_setup(struct nfs_read_data *data)
static void nfs4_proc_read_setup(struct nfs_read_data *data, struct rpc_message *msg)
{
struct rpc_message msg = {
.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_READ],
.rpc_argp = &data->args,
.rpc_resp = &data->res,
.rpc_cred = data->cred,
};
data->timestamp = jiffies;
rpc_call_setup(&data->task, &msg, 0);
msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_READ];
}
static int nfs4_write_done(struct rpc_task *task, struct nfs_write_data *data)
@ -2443,33 +2449,15 @@ static int nfs4_write_done(struct rpc_task *task, struct nfs_write_data *data)
return 0;
}
static void nfs4_proc_write_setup(struct nfs_write_data *data, int how)
static void nfs4_proc_write_setup(struct nfs_write_data *data, struct rpc_message *msg)
{
struct rpc_message msg = {
.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_WRITE],
.rpc_argp = &data->args,
.rpc_resp = &data->res,
.rpc_cred = data->cred,
};
struct inode *inode = data->inode;
struct nfs_server *server = NFS_SERVER(inode);
int stable;
if (how & FLUSH_STABLE) {
if (!NFS_I(inode)->ncommit)
stable = NFS_FILE_SYNC;
else
stable = NFS_DATA_SYNC;
} else
stable = NFS_UNSTABLE;
data->args.stable = stable;
struct nfs_server *server = NFS_SERVER(data->inode);
data->args.bitmask = server->attr_bitmask;
data->res.server = server;
data->timestamp = jiffies;
/* Finalize the task. */
rpc_call_setup(&data->task, &msg, 0);
msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_WRITE];
}
static int nfs4_commit_done(struct rpc_task *task, struct nfs_write_data *data)
@ -2484,20 +2472,13 @@ static int nfs4_commit_done(struct rpc_task *task, struct nfs_write_data *data)
return 0;
}
static void nfs4_proc_commit_setup(struct nfs_write_data *data, int how)
static void nfs4_proc_commit_setup(struct nfs_write_data *data, struct rpc_message *msg)
{
struct rpc_message msg = {
.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_COMMIT],
.rpc_argp = &data->args,
.rpc_resp = &data->res,
.rpc_cred = data->cred,
};
struct nfs_server *server = NFS_SERVER(data->inode);
data->args.bitmask = server->attr_bitmask;
data->res.server = server;
rpc_call_setup(&data->task, &msg, 0);
msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_COMMIT];
}
/*
@ -2910,14 +2891,20 @@ int nfs4_proc_setclientid(struct nfs_client *clp, u32 program, unsigned short po
for(;;) {
setclientid.sc_name_len = scnprintf(setclientid.sc_name,
sizeof(setclientid.sc_name), "%s/%u.%u.%u.%u %s %u",
clp->cl_ipaddr, NIPQUAD(clp->cl_addr.sin_addr),
sizeof(setclientid.sc_name), "%s/%s %s %s %u",
clp->cl_ipaddr,
rpc_peeraddr2str(clp->cl_rpcclient,
RPC_DISPLAY_ADDR),
rpc_peeraddr2str(clp->cl_rpcclient,
RPC_DISPLAY_PROTO),
cred->cr_ops->cr_name,
clp->cl_id_uniquifier);
setclientid.sc_netid_len = scnprintf(setclientid.sc_netid,
sizeof(setclientid.sc_netid), "tcp");
sizeof(setclientid.sc_netid),
rpc_peeraddr2str(clp->cl_rpcclient,
RPC_DISPLAY_NETID));
setclientid.sc_uaddr_len = scnprintf(setclientid.sc_uaddr,
sizeof(setclientid.sc_uaddr), "%s.%d.%d",
sizeof(setclientid.sc_uaddr), "%s.%u.%u",
clp->cl_ipaddr, port >> 8, port & 255);
status = rpc_call_sync(clp->cl_rpcclient, &msg, 0);
@ -2981,25 +2968,11 @@ struct nfs4_delegreturndata {
struct nfs4_delegreturnres res;
struct nfs_fh fh;
nfs4_stateid stateid;
struct rpc_cred *cred;
unsigned long timestamp;
struct nfs_fattr fattr;
int rpc_status;
};
static void nfs4_delegreturn_prepare(struct rpc_task *task, void *calldata)
{
struct nfs4_delegreturndata *data = calldata;
struct rpc_message msg = {
.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_DELEGRETURN],
.rpc_argp = &data->args,
.rpc_resp = &data->res,
.rpc_cred = data->cred,
};
nfs_fattr_init(data->res.fattr);
rpc_call_setup(task, &msg, 0);
}
static void nfs4_delegreturn_done(struct rpc_task *task, void *calldata)
{
struct nfs4_delegreturndata *data = calldata;
@ -3010,24 +2983,30 @@ static void nfs4_delegreturn_done(struct rpc_task *task, void *calldata)
static void nfs4_delegreturn_release(void *calldata)
{
struct nfs4_delegreturndata *data = calldata;
put_rpccred(data->cred);
kfree(calldata);
}
static const struct rpc_call_ops nfs4_delegreturn_ops = {
.rpc_call_prepare = nfs4_delegreturn_prepare,
.rpc_call_done = nfs4_delegreturn_done,
.rpc_release = nfs4_delegreturn_release,
};
static int _nfs4_proc_delegreturn(struct inode *inode, struct rpc_cred *cred, const nfs4_stateid *stateid)
static int _nfs4_proc_delegreturn(struct inode *inode, struct rpc_cred *cred, const nfs4_stateid *stateid, int issync)
{
struct nfs4_delegreturndata *data;
struct nfs_server *server = NFS_SERVER(inode);
struct rpc_task *task;
int status;
struct rpc_message msg = {
.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_DELEGRETURN],
.rpc_cred = cred,
};
struct rpc_task_setup task_setup_data = {
.rpc_client = server->client,
.rpc_message = &msg,
.callback_ops = &nfs4_delegreturn_ops,
.flags = RPC_TASK_ASYNC,
};
int status = 0;
data = kmalloc(sizeof(*data), GFP_KERNEL);
if (data == NULL)
@ -3039,30 +3018,37 @@ static int _nfs4_proc_delegreturn(struct inode *inode, struct rpc_cred *cred, co
memcpy(&data->stateid, stateid, sizeof(data->stateid));
data->res.fattr = &data->fattr;
data->res.server = server;
data->cred = get_rpccred(cred);
nfs_fattr_init(data->res.fattr);
data->timestamp = jiffies;
data->rpc_status = 0;
task = rpc_run_task(NFS_CLIENT(inode), RPC_TASK_ASYNC, &nfs4_delegreturn_ops, data);
task_setup_data.callback_data = data;
msg.rpc_argp = &data->args,
msg.rpc_resp = &data->res,
task = rpc_run_task(&task_setup_data);
if (IS_ERR(task))
return PTR_ERR(task);
if (!issync)
goto out;
status = nfs4_wait_for_completion_rpc_task(task);
if (status == 0) {
status = data->rpc_status;
if (status == 0)
nfs_refresh_inode(inode, &data->fattr);
}
if (status != 0)
goto out;
status = data->rpc_status;
if (status != 0)
goto out;
nfs_refresh_inode(inode, &data->fattr);
out:
rpc_put_task(task);
return status;
}
int nfs4_proc_delegreturn(struct inode *inode, struct rpc_cred *cred, const nfs4_stateid *stateid)
int nfs4_proc_delegreturn(struct inode *inode, struct rpc_cred *cred, const nfs4_stateid *stateid, int issync)
{
struct nfs_server *server = NFS_SERVER(inode);
struct nfs4_exception exception = { };
int err;
do {
err = _nfs4_proc_delegreturn(inode, cred, stateid);
err = _nfs4_proc_delegreturn(inode, cred, stateid, issync);
switch (err) {
case -NFS4ERR_STALE_STATEID:
case -NFS4ERR_EXPIRED:
@ -3230,12 +3216,6 @@ static void nfs4_locku_done(struct rpc_task *task, void *data)
static void nfs4_locku_prepare(struct rpc_task *task, void *data)
{
struct nfs4_unlockdata *calldata = data;
struct rpc_message msg = {
.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOCKU],
.rpc_argp = &calldata->arg,
.rpc_resp = &calldata->res,
.rpc_cred = calldata->lsp->ls_state->owner->so_cred,
};
if (nfs_wait_on_sequence(calldata->arg.seqid, task) != 0)
return;
@ -3245,7 +3225,7 @@ static void nfs4_locku_prepare(struct rpc_task *task, void *data)
return;
}
calldata->timestamp = jiffies;
rpc_call_setup(task, &msg, 0);
rpc_call_start(task);
}
static const struct rpc_call_ops nfs4_locku_ops = {
@ -3260,6 +3240,16 @@ static struct rpc_task *nfs4_do_unlck(struct file_lock *fl,
struct nfs_seqid *seqid)
{
struct nfs4_unlockdata *data;
struct rpc_message msg = {
.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOCKU],
.rpc_cred = ctx->cred,
};
struct rpc_task_setup task_setup_data = {
.rpc_client = NFS_CLIENT(lsp->ls_state->inode),
.rpc_message = &msg,
.callback_ops = &nfs4_locku_ops,
.flags = RPC_TASK_ASYNC,
};
/* Ensure this is an unlock - when canceling a lock, the
* canceled lock is passed in, and it won't be an unlock.
@ -3272,7 +3262,10 @@ static struct rpc_task *nfs4_do_unlck(struct file_lock *fl,
return ERR_PTR(-ENOMEM);
}
return rpc_run_task(NFS_CLIENT(lsp->ls_state->inode), RPC_TASK_ASYNC, &nfs4_locku_ops, data);
msg.rpc_argp = &data->arg,
msg.rpc_resp = &data->res,
task_setup_data.callback_data = data;
return rpc_run_task(&task_setup_data);
}
static int nfs4_proc_unlck(struct nfs4_state *state, int cmd, struct file_lock *request)
@ -3331,15 +3324,12 @@ static struct nfs4_lockdata *nfs4_alloc_lockdata(struct file_lock *fl,
p->arg.fh = NFS_FH(inode);
p->arg.fl = &p->fl;
if (!(lsp->ls_seqid.flags & NFS_SEQID_CONFIRMED)) {
p->arg.open_seqid = nfs_alloc_seqid(&lsp->ls_state->owner->so_seqid);
if (p->arg.open_seqid == NULL)
goto out_free;
}
p->arg.open_seqid = nfs_alloc_seqid(&lsp->ls_state->owner->so_seqid);
if (p->arg.open_seqid == NULL)
goto out_free;
p->arg.lock_seqid = nfs_alloc_seqid(&lsp->ls_seqid);
if (p->arg.lock_seqid == NULL)
goto out_free;
goto out_free_seqid;
p->arg.lock_stateid = &lsp->ls_stateid;
p->arg.lock_owner.clientid = server->nfs_client->cl_clientid;
p->arg.lock_owner.id = lsp->ls_id.id;
@ -3348,9 +3338,9 @@ static struct nfs4_lockdata *nfs4_alloc_lockdata(struct file_lock *fl,
p->ctx = get_nfs_open_context(ctx);
memcpy(&p->fl, fl, sizeof(p->fl));
return p;
out_free_seqid:
nfs_free_seqid(p->arg.open_seqid);
out_free:
if (p->arg.open_seqid != NULL)
nfs_free_seqid(p->arg.open_seqid);
kfree(p);
return NULL;
}
@ -3359,31 +3349,20 @@ static void nfs4_lock_prepare(struct rpc_task *task, void *calldata)
{
struct nfs4_lockdata *data = calldata;
struct nfs4_state *state = data->lsp->ls_state;
struct nfs4_state_owner *sp = state->owner;
struct rpc_message msg = {
.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOCK],
.rpc_argp = &data->arg,
.rpc_resp = &data->res,
.rpc_cred = sp->so_cred,
};
dprintk("%s: begin!\n", __FUNCTION__);
if (nfs_wait_on_sequence(data->arg.lock_seqid, task) != 0)
return;
/* Do we need to do an open_to_lock_owner? */
if (!(data->arg.lock_seqid->sequence->flags & NFS_SEQID_CONFIRMED)) {
if (nfs_wait_on_sequence(data->arg.open_seqid, task) != 0)
return;
data->arg.open_stateid = &state->stateid;
data->arg.new_lock_owner = 1;
/* Retest in case we raced... */
if (!(data->arg.lock_seqid->sequence->flags & NFS_SEQID_CONFIRMED))
goto do_rpc;
}
if (nfs_wait_on_sequence(data->arg.lock_seqid, task) != 0)
return;
data->arg.new_lock_owner = 0;
do_rpc:
} else
data->arg.new_lock_owner = 0;
data->timestamp = jiffies;
rpc_call_setup(task, &msg, 0);
rpc_call_start(task);
dprintk("%s: done!, ret = %d\n", __FUNCTION__, data->rpc_status);
}
@ -3419,6 +3398,7 @@ static void nfs4_lock_release(void *calldata)
struct nfs4_lockdata *data = calldata;
dprintk("%s: begin!\n", __FUNCTION__);
nfs_free_seqid(data->arg.open_seqid);
if (data->cancelled != 0) {
struct rpc_task *task;
task = nfs4_do_unlck(&data->fl, data->ctx, data->lsp,
@ -3428,8 +3408,6 @@ static void nfs4_lock_release(void *calldata)
dprintk("%s: cancelling lock!\n", __FUNCTION__);
} else
nfs_free_seqid(data->arg.lock_seqid);
if (data->arg.open_seqid != NULL)
nfs_free_seqid(data->arg.open_seqid);
nfs4_put_lock_state(data->lsp);
put_nfs_open_context(data->ctx);
kfree(data);
@ -3446,6 +3424,16 @@ static int _nfs4_do_setlk(struct nfs4_state *state, int cmd, struct file_lock *f
{
struct nfs4_lockdata *data;
struct rpc_task *task;
struct rpc_message msg = {
.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOCK],
.rpc_cred = state->owner->so_cred,
};
struct rpc_task_setup task_setup_data = {
.rpc_client = NFS_CLIENT(state->inode),
.rpc_message = &msg,
.callback_ops = &nfs4_lock_ops,
.flags = RPC_TASK_ASYNC,
};
int ret;
dprintk("%s: begin!\n", __FUNCTION__);
@ -3457,8 +3445,10 @@ static int _nfs4_do_setlk(struct nfs4_state *state, int cmd, struct file_lock *f
data->arg.block = 1;
if (reclaim != 0)
data->arg.reclaim = 1;
task = rpc_run_task(NFS_CLIENT(state->inode), RPC_TASK_ASYNC,
&nfs4_lock_ops, data);
msg.rpc_argp = &data->arg,
msg.rpc_resp = &data->res,
task_setup_data.callback_data = data;
task = rpc_run_task(&task_setup_data);
if (IS_ERR(task))
return PTR_ERR(task);
ret = nfs4_wait_for_completion_rpc_task(task);
@ -3631,10 +3621,6 @@ int nfs4_setxattr(struct dentry *dentry, const char *key, const void *buf,
if (strcmp(key, XATTR_NAME_NFSV4_ACL) != 0)
return -EOPNOTSUPP;
if (!S_ISREG(inode->i_mode) &&
(!S_ISDIR(inode->i_mode) || inode->i_mode & S_ISVTX))
return -EPERM;
return nfs4_proc_set_acl(inode, buf, buflen);
}

41
fs/nfs/nfs4state.c
View file

@ -644,27 +644,26 @@ void nfs4_copy_stateid(nfs4_stateid *dst, struct nfs4_state *state, fl_owner_t f
struct nfs_seqid *nfs_alloc_seqid(struct nfs_seqid_counter *counter)
{
struct rpc_sequence *sequence = counter->sequence;
struct nfs_seqid *new;
new = kmalloc(sizeof(*new), GFP_KERNEL);
if (new != NULL) {
new->sequence = counter;
spin_lock(&sequence->lock);
list_add_tail(&new->list, &sequence->list);
spin_unlock(&sequence->lock);
INIT_LIST_HEAD(&new->list);
}
return new;
}
void nfs_free_seqid(struct nfs_seqid *seqid)
{
struct rpc_sequence *sequence = seqid->sequence->sequence;
if (!list_empty(&seqid->list)) {
struct rpc_sequence *sequence = seqid->sequence->sequence;
spin_lock(&sequence->lock);
list_del(&seqid->list);
spin_unlock(&sequence->lock);
rpc_wake_up(&sequence->wait);
spin_lock(&sequence->lock);
list_del(&seqid->list);
spin_unlock(&sequence->lock);
rpc_wake_up(&sequence->wait);
}
kfree(seqid);
}
@ -675,6 +674,7 @@ void nfs_free_seqid(struct nfs_seqid *seqid)
*/
static void nfs_increment_seqid(int status, struct nfs_seqid *seqid)
{
BUG_ON(list_first_entry(&seqid->sequence->sequence->list, struct nfs_seqid, list) != seqid);
switch (status) {
case 0:
break;
@ -726,15 +726,15 @@ int nfs_wait_on_sequence(struct nfs_seqid *seqid, struct rpc_task *task)
struct rpc_sequence *sequence = seqid->sequence->sequence;
int status = 0;
if (sequence->list.next == &seqid->list)
goto out;
spin_lock(&sequence->lock);
if (sequence->list.next != &seqid->list) {
rpc_sleep_on(&sequence->wait, task, NULL, NULL);
status = -EAGAIN;
}
if (list_empty(&seqid->list))
list_add_tail(&seqid->list, &sequence->list);
if (list_first_entry(&sequence->list, struct nfs_seqid, list) == seqid)
goto unlock;
rpc_sleep_on(&sequence->wait, task, NULL, NULL);
status = -EAGAIN;
unlock:
spin_unlock(&sequence->lock);
out:
return status;
}
@ -758,8 +758,9 @@ static void nfs4_recover_state(struct nfs_client *clp)
__module_get(THIS_MODULE);
atomic_inc(&clp->cl_count);
task = kthread_run(reclaimer, clp, "%u.%u.%u.%u-reclaim",
NIPQUAD(clp->cl_addr.sin_addr));
task = kthread_run(reclaimer, clp, "%s-reclaim",
rpc_peeraddr2str(clp->cl_rpcclient,
RPC_DISPLAY_ADDR));
if (!IS_ERR(task))
return;
nfs4_clear_recover_bit(clp);
@ -970,8 +971,8 @@ static int reclaimer(void *ptr)
module_put_and_exit(0);
return 0;
out_error:
printk(KERN_WARNING "Error: state recovery failed on NFSv4 server %u.%u.%u.%u with error %d\n",
NIPQUAD(clp->cl_addr.sin_addr), -status);
printk(KERN_WARNING "Error: state recovery failed on NFSv4 server %s"
" with error %d\n", clp->cl_hostname, -status);
set_bit(NFS4CLNT_LEASE_EXPIRED, &clp->cl_state);
goto out;
}

40
fs/nfs/nfs4xdr.c
View file

@ -116,10 +116,12 @@ static int nfs4_stat_to_errno(int);
#define decode_renew_maxsz (op_decode_hdr_maxsz)
#define encode_setclientid_maxsz \
(op_encode_hdr_maxsz + \
4 /*server->ip_addr*/ + \
1 /*Netid*/ + \
6 /*uaddr*/ + \
6 + (NFS4_VERIFIER_SIZE >> 2))
XDR_QUADLEN(NFS4_VERIFIER_SIZE) + \
XDR_QUADLEN(NFS4_SETCLIENTID_NAMELEN) + \
1 /* sc_prog */ + \
XDR_QUADLEN(RPCBIND_MAXNETIDLEN) + \
XDR_QUADLEN(RPCBIND_MAXUADDRLEN) + \
1) /* sc_cb_ident */
#define decode_setclientid_maxsz \
(op_decode_hdr_maxsz + \
2 + \
@ -2515,14 +2517,12 @@ static int decode_attr_files_total(struct xdr_stream *xdr, uint32_t *bitmap, uin
static int decode_pathname(struct xdr_stream *xdr, struct nfs4_pathname *path)
{
int n;
u32 n;
__be32 *p;
int status = 0;
READ_BUF(4);
READ32(n);
if (n < 0)
goto out_eio;
if (n == 0)
goto root_path;
dprintk("path ");
@ -2579,13 +2579,11 @@ static int decode_attr_fs_locations(struct xdr_stream *xdr, uint32_t *bitmap, st
goto out_eio;
res->nlocations = 0;
while (res->nlocations < n) {
int m;
u32 m;
struct nfs4_fs_location *loc = &res->locations[res->nlocations];
READ_BUF(4);
READ32(m);
if (m <= 0)
goto out_eio;
loc->nservers = 0;
dprintk("%s: servers ", __FUNCTION__);
@ -2598,8 +2596,12 @@ static int decode_attr_fs_locations(struct xdr_stream *xdr, uint32_t *bitmap, st
if (loc->nservers < NFS4_FS_LOCATION_MAXSERVERS)
loc->nservers++;
else {
int i;
dprintk("%s: using first %d of %d servers returned for location %d\n", __FUNCTION__, NFS4_FS_LOCATION_MAXSERVERS, m, res->nlocations);
unsigned int i;
dprintk("%s: using first %u of %u servers "
"returned for location %u\n",
__FUNCTION__,
NFS4_FS_LOCATION_MAXSERVERS,
m, res->nlocations);
for (i = loc->nservers; i < m; i++) {
unsigned int len;
char *data;
@ -3476,10 +3478,11 @@ static int decode_readdir(struct xdr_stream *xdr, struct rpc_rqst *req, struct n
struct xdr_buf *rcvbuf = &req->rq_rcv_buf;
struct page *page = *rcvbuf->pages;
struct kvec *iov = rcvbuf->head;
unsigned int nr, pglen = rcvbuf->page_len;
size_t hdrlen;
u32 recvd, pglen = rcvbuf->page_len;
__be32 *end, *entry, *p, *kaddr;
uint32_t len, attrlen, xlen;
int hdrlen, recvd, status;
unsigned int nr;
int status;
status = decode_op_hdr(xdr, OP_READDIR);
if (status)
@ -3503,6 +3506,7 @@ static int decode_readdir(struct xdr_stream *xdr, struct rpc_rqst *req, struct n
end = p + ((pglen + readdir->pgbase) >> 2);
entry = p;
for (nr = 0; *p++; nr++) {
u32 len, attrlen, xlen;
if (end - p < 3)
goto short_pkt;
dprintk("cookie = %Lu, ", *((unsigned long long *)p));
@ -3551,7 +3555,8 @@ static int decode_readlink(struct xdr_stream *xdr, struct rpc_rqst *req)
{
struct xdr_buf *rcvbuf = &req->rq_rcv_buf;
struct kvec *iov = rcvbuf->head;
int hdrlen, len, recvd;
size_t hdrlen;
u32 len, recvd;
__be32 *p;
char *kaddr;
int status;
@ -3646,7 +3651,8 @@ static int decode_getacl(struct xdr_stream *xdr, struct rpc_rqst *req,
if (unlikely(bitmap[0] & (FATTR4_WORD0_ACL - 1U)))
return -EIO;
if (likely(bitmap[0] & FATTR4_WORD0_ACL)) {
int hdrlen, recvd;
size_t hdrlen;
u32 recvd;
/* We ignore &savep and don't do consistency checks on
* the attr length. Let userspace figure it out.... */

13
fs/nfs/pagelist.c
View file

@ -111,13 +111,14 @@ void nfs_unlock_request(struct nfs_page *req)
* nfs_set_page_tag_locked - Tag a request as locked
* @req:
*/
static int nfs_set_page_tag_locked(struct nfs_page *req)
int nfs_set_page_tag_locked(struct nfs_page *req)
{
struct nfs_inode *nfsi = NFS_I(req->wb_context->path.dentry->d_inode);
if (!nfs_lock_request(req))
if (!nfs_lock_request_dontget(req))
return 0;
radix_tree_tag_set(&nfsi->nfs_page_tree, req->wb_index, NFS_PAGE_TAG_LOCKED);
if (req->wb_page != NULL)
radix_tree_tag_set(&nfsi->nfs_page_tree, req->wb_index, NFS_PAGE_TAG_LOCKED);
return 1;
}
@ -132,9 +133,10 @@ void nfs_clear_page_tag_locked(struct nfs_page *req)
if (req->wb_page != NULL) {
spin_lock(&inode->i_lock);
radix_tree_tag_clear(&nfsi->nfs_page_tree, req->wb_index, NFS_PAGE_TAG_LOCKED);
nfs_unlock_request(req);
spin_unlock(&inode->i_lock);
}
nfs_unlock_request(req);
} else
nfs_unlock_request(req);
}
/**
@ -421,6 +423,7 @@ int nfs_scan_list(struct nfs_inode *nfsi,
goto out;
idx_start = req->wb_index + 1;
if (nfs_set_page_tag_locked(req)) {
kref_get(&req->wb_kref);
nfs_list_remove_request(req);
radix_tree_tag_clear(&nfsi->nfs_page_tree,
req->wb_index, tag);

30
fs/nfs/proc.c
View file

@ -565,16 +565,9 @@ static int nfs_read_done(struct rpc_task *task, struct nfs_read_data *data)
return 0;
}
static void nfs_proc_read_setup(struct nfs_read_data *data)
static void nfs_proc_read_setup(struct nfs_read_data *data, struct rpc_message *msg)
{
struct rpc_message msg = {
.rpc_proc = &nfs_procedures[NFSPROC_READ],
.rpc_argp = &data->args,
.rpc_resp = &data->res,
.rpc_cred = data->cred,
};
rpc_call_setup(&data->task, &msg, 0);
msg->rpc_proc = &nfs_procedures[NFSPROC_READ];
}
static int nfs_write_done(struct rpc_task *task, struct nfs_write_data *data)
@ -584,24 +577,15 @@ static int nfs_write_done(struct rpc_task *task, struct nfs_write_data *data)
return 0;
}
static void nfs_proc_write_setup(struct nfs_write_data *data, int how)
static void nfs_proc_write_setup(struct nfs_write_data *data, struct rpc_message *msg)
{
struct rpc_message msg = {
.rpc_proc = &nfs_procedures[NFSPROC_WRITE],
.rpc_argp = &data->args,
.rpc_resp = &data->res,
.rpc_cred = data->cred,
};
/* Note: NFSv2 ignores @stable and always uses NFS_FILE_SYNC */
data->args.stable = NFS_FILE_SYNC;
/* Finalize the task. */
rpc_call_setup(&data->task, &msg, 0);
msg->rpc_proc = &nfs_procedures[NFSPROC_WRITE];
}
static void
nfs_proc_commit_setup(struct nfs_write_data *data, int how)
nfs_proc_commit_setup(struct nfs_write_data *data, struct rpc_message *msg)
{
BUG();
}
@ -609,7 +593,9 @@ nfs_proc_commit_setup(struct nfs_write_data *data, int how)
static int
nfs_proc_lock(struct file *filp, int cmd, struct file_lock *fl)
{
return nlmclnt_proc(filp->f_path.dentry->d_inode, cmd, fl);
struct inode *inode = filp->f_path.dentry->d_inode;
return nlmclnt_proc(NFS_SERVER(inode)->nlm_host, cmd, fl);
}

50
fs/nfs/read.c
View file

@ -160,12 +160,26 @@ static void nfs_read_rpcsetup(struct nfs_page *req, struct nfs_read_data *data,
const struct rpc_call_ops *call_ops,
unsigned int count, unsigned int offset)
{
struct inode *inode;
int flags;
struct inode *inode = req->wb_context->path.dentry->d_inode;
int swap_flags = IS_SWAPFILE(inode) ? NFS_RPC_SWAPFLAGS : 0;
struct rpc_task *task;
struct rpc_message msg = {
.rpc_argp = &data->args,
.rpc_resp = &data->res,
.rpc_cred = req->wb_context->cred,
};
struct rpc_task_setup task_setup_data = {
.task = &data->task,
.rpc_client = NFS_CLIENT(inode),
.rpc_message = &msg,
.callback_ops = call_ops,
.callback_data = data,
.flags = RPC_TASK_ASYNC | swap_flags,
};
data->req = req;
data->inode = inode = req->wb_context->path.dentry->d_inode;
data->cred = req->wb_context->cred;
data->inode = inode;
data->cred = msg.rpc_cred;
data->args.fh = NFS_FH(inode);
data->args.offset = req_offset(req) + offset;
@ -180,11 +194,7 @@ static void nfs_read_rpcsetup(struct nfs_page *req, struct nfs_read_data *data,
nfs_fattr_init(&data->fattr);
/* Set up the initial task struct. */
flags = RPC_TASK_ASYNC | (IS_SWAPFILE(inode)? NFS_RPC_SWAPFLAGS : 0);
rpc_init_task(&data->task, NFS_CLIENT(inode), flags, call_ops, data);
NFS_PROTO(inode)->read_setup(data);
data->task.tk_cookie = (unsigned long)inode;
NFS_PROTO(inode)->read_setup(data, &msg);
dprintk("NFS: %5u initiated read call (req %s/%Ld, %u bytes @ offset %Lu)\n",
data->task.tk_pid,
@ -192,6 +202,10 @@ static void nfs_read_rpcsetup(struct nfs_page *req, struct nfs_read_data *data,
(long long)NFS_FILEID(inode),
count,
(unsigned long long)data->args.offset);
task = rpc_run_task(&task_setup_data);
if (!IS_ERR(task))
rpc_put_task(task);
}
static void
@ -207,19 +221,6 @@ nfs_async_read_error(struct list_head *head)
}
}
/*
* Start an async read operation
*/
static void nfs_execute_read(struct nfs_read_data *data)
{
struct rpc_clnt *clnt = NFS_CLIENT(data->inode);
sigset_t oldset;
rpc_clnt_sigmask(clnt, &oldset);
rpc_execute(&data->task);
rpc_clnt_sigunmask(clnt, &oldset);
}
/*
* Generate multiple requests to fill a single page.
*
@ -274,7 +275,6 @@ static int nfs_pagein_multi(struct inode *inode, struct list_head *head, unsigne
rsize, offset);
offset += rsize;
nbytes -= rsize;
nfs_execute_read(data);
} while (nbytes != 0);
return 0;
@ -312,8 +312,6 @@ static int nfs_pagein_one(struct inode *inode, struct list_head *head, unsigned
req = nfs_list_entry(data->pages.next);
nfs_read_rpcsetup(req, data, &nfs_read_full_ops, count, 0);
nfs_execute_read(data);
return 0;
out_bad:
nfs_async_read_error(head);
@ -338,7 +336,7 @@ int nfs_readpage_result(struct rpc_task *task, struct nfs_read_data *data)
nfs_add_stats(data->inode, NFSIOS_SERVERREADBYTES, data->res.count);
if (task->tk_status == -ESTALE) {
set_bit(NFS_INO_STALE, &NFS_FLAGS(data->inode));
set_bit(NFS_INO_STALE, &NFS_I(data->inode)->flags);
nfs_mark_for_revalidate(data->inode);
}
return 0;

297
fs/nfs/super.c
View file

@ -45,6 +45,8 @@
#include <linux/nfs_idmap.h>
#include <linux/vfs.h>
#include <linux/inet.h>
#include <linux/in6.h>
#include <net/ipv6.h>
#include <linux/nfs_xdr.h>
#include <linux/magic.h>
#include <linux/parser.h>
@ -83,11 +85,11 @@ enum {
Opt_actimeo,
Opt_namelen,
Opt_mountport,
Opt_mountprog, Opt_mountvers,
Opt_nfsprog, Opt_nfsvers,
Opt_mountvers,
Opt_nfsvers,
/* Mount options that take string arguments */
Opt_sec, Opt_proto, Opt_mountproto,
Opt_sec, Opt_proto, Opt_mountproto, Opt_mounthost,
Opt_addr, Opt_mountaddr, Opt_clientaddr,
/* Mount options that are ignored */
@ -137,9 +139,7 @@ static match_table_t nfs_mount_option_tokens = {
{ Opt_userspace, "retry=%u" },
{ Opt_namelen, "namlen=%u" },
{ Opt_mountport, "mountport=%u" },
{ Opt_mountprog, "mountprog=%u" },
{ Opt_mountvers, "mountvers=%u" },
{ Opt_nfsprog, "nfsprog=%u" },
{ Opt_nfsvers, "nfsvers=%u" },
{ Opt_nfsvers, "vers=%u" },
@ -148,7 +148,7 @@ static match_table_t nfs_mount_option_tokens = {
{ Opt_mountproto, "mountproto=%s" },
{ Opt_addr, "addr=%s" },
{ Opt_clientaddr, "clientaddr=%s" },
{ Opt_userspace, "mounthost=%s" },
{ Opt_mounthost, "mounthost=%s" },
{ Opt_mountaddr, "mountaddr=%s" },
{ Opt_err, NULL }
@ -202,6 +202,7 @@ static int nfs_get_sb(struct file_system_type *, int, const char *, void *, stru
static int nfs_xdev_get_sb(struct file_system_type *fs_type,
int flags, const char *dev_name, void *raw_data, struct vfsmount *mnt);
static void nfs_kill_super(struct super_block *);
static void nfs_put_super(struct super_block *);
static struct file_system_type nfs_fs_type = {
.owner = THIS_MODULE,
@ -223,6 +224,7 @@ static const struct super_operations nfs_sops = {
.alloc_inode = nfs_alloc_inode,
.destroy_inode = nfs_destroy_inode,
.write_inode = nfs_write_inode,
.put_super = nfs_put_super,
.statfs = nfs_statfs,
.clear_inode = nfs_clear_inode,
.umount_begin = nfs_umount_begin,
@ -325,6 +327,28 @@ void __exit unregister_nfs_fs(void)
unregister_filesystem(&nfs_fs_type);
}
void nfs_sb_active(struct nfs_server *server)
{
atomic_inc(&server->active);
}
void nfs_sb_deactive(struct nfs_server *server)
{
if (atomic_dec_and_test(&server->active))
wake_up(&server->active_wq);
}
static void nfs_put_super(struct super_block *sb)
{
struct nfs_server *server = NFS_SB(sb);
/*
* Make sure there are no outstanding ops to this server.
* If so, wait for them to finish before allowing the
* unmount to continue.
*/
wait_event(server->active_wq, atomic_read(&server->active) == 0);
}
/*
* Deliver file system statistics to userspace
*/
@ -455,8 +479,8 @@ static void nfs_show_mount_options(struct seq_file *m, struct nfs_server *nfss,
}
seq_printf(m, ",proto=%s",
rpc_peeraddr2str(nfss->client, RPC_DISPLAY_PROTO));
seq_printf(m, ",timeo=%lu", 10U * clp->retrans_timeo / HZ);
seq_printf(m, ",retrans=%u", clp->retrans_count);
seq_printf(m, ",timeo=%lu", 10U * nfss->client->cl_timeout->to_initval / HZ);
seq_printf(m, ",retrans=%u", nfss->client->cl_timeout->to_retries);
seq_printf(m, ",sec=%s", nfs_pseudoflavour_to_name(nfss->client->cl_auth->au_flavor));
}
@ -469,8 +493,9 @@ static int nfs_show_options(struct seq_file *m, struct vfsmount *mnt)
nfs_show_mount_options(m, nfss, 0);
seq_printf(m, ",addr="NIPQUAD_FMT,
NIPQUAD(nfss->nfs_client->cl_addr.sin_addr));
seq_printf(m, ",addr=%s",
rpc_peeraddr2str(nfss->nfs_client->cl_rpcclient,
RPC_DISPLAY_ADDR));
return 0;
}
@ -507,7 +532,7 @@ static int nfs_show_stats(struct seq_file *m, struct vfsmount *mnt)
seq_printf(m, ",namelen=%d", nfss->namelen);
#ifdef CONFIG_NFS_V4
if (nfss->nfs_client->cl_nfsversion == 4) {
if (nfss->nfs_client->rpc_ops->version == 4) {
seq_printf(m, "\n\tnfsv4:\t");
seq_printf(m, "bm0=0x%x", nfss->attr_bitmask[0]);
seq_printf(m, ",bm1=0x%x", nfss->attr_bitmask[1]);
@ -575,22 +600,80 @@ static void nfs_umount_begin(struct vfsmount *vfsmnt, int flags)
}
/*
* Sanity-check a server address provided by the mount command
* Set the port number in an address. Be agnostic about the address family.
*/
static void nfs_set_port(struct sockaddr *sap, unsigned short port)
{
switch (sap->sa_family) {
case AF_INET: {
struct sockaddr_in *ap = (struct sockaddr_in *)sap;
ap->sin_port = htons(port);
break;
}
case AF_INET6: {
struct sockaddr_in6 *ap = (struct sockaddr_in6 *)sap;
ap->sin6_port = htons(port);
break;
}
}
}
/*
* Sanity-check a server address provided by the mount command.
*
* Address family must be initialized, and address must not be
* the ANY address for that family.
*/
static int nfs_verify_server_address(struct sockaddr *addr)
{
switch (addr->sa_family) {
case AF_INET: {
struct sockaddr_in *sa = (struct sockaddr_in *) addr;
if (sa->sin_addr.s_addr != INADDR_ANY)
return 1;
break;
struct sockaddr_in *sa = (struct sockaddr_in *)addr;
return sa->sin_addr.s_addr != INADDR_ANY;
}
case AF_INET6: {
struct in6_addr *sa = &((struct sockaddr_in6 *)addr)->sin6_addr;
return !ipv6_addr_any(sa);
}
}
return 0;
}
/*
* Parse string addresses passed in via a mount option,
* and construct a sockaddr based on the result.
*
* If address parsing fails, set the sockaddr's address
* family to AF_UNSPEC to force nfs_verify_server_address()
* to punt the mount.
*/
static void nfs_parse_server_address(char *value,
struct sockaddr *sap,
size_t *len)
{
if (strchr(value, ':')) {
struct sockaddr_in6 *ap = (struct sockaddr_in6 *)sap;
u8 *addr = (u8 *)&ap->sin6_addr.in6_u;
ap->sin6_family = AF_INET6;
*len = sizeof(*ap);
if (in6_pton(value, -1, addr, '\0', NULL))
return;
} else {
struct sockaddr_in *ap = (struct sockaddr_in *)sap;
u8 *addr = (u8 *)&ap->sin_addr.s_addr;
ap->sin_family = AF_INET;
*len = sizeof(*ap);
if (in4_pton(value, -1, addr, '\0', NULL))
return;
}
sap->sa_family = AF_UNSPEC;
*len = 0;
}
/*
* Error-check and convert a string of mount options from user space into
* a data structure
@ -599,6 +682,7 @@ static int nfs_parse_mount_options(char *raw,
struct nfs_parsed_mount_data *mnt)
{
char *p, *string;
unsigned short port = 0;
if (!raw) {
dfprintk(MOUNT, "NFS: mount options string was NULL.\n");
@ -701,7 +785,7 @@ static int nfs_parse_mount_options(char *raw,
return 0;
if (option < 0 || option > 65535)
return 0;
mnt->nfs_server.address.sin_port = htons(option);
port = option;
break;
case Opt_rsize:
if (match_int(args, &mnt->rsize))
@ -763,13 +847,6 @@ static int nfs_parse_mount_options(char *raw,
return 0;
mnt->mount_server.port = option;
break;
case Opt_mountprog:
if (match_int(args, &option))
return 0;
if (option < 0)
return 0;
mnt->mount_server.program = option;
break;
case Opt_mountvers:
if (match_int(args, &option))
return 0;
@ -777,13 +854,6 @@ static int nfs_parse_mount_options(char *raw,
return 0;
mnt->mount_server.version = option;
break;
case Opt_nfsprog:
if (match_int(args, &option))
return 0;
if (option < 0)
return 0;
mnt->nfs_server.program = option;
break;
case Opt_nfsvers:
if (match_int(args, &option))
return 0;
@ -927,24 +997,32 @@ static int nfs_parse_mount_options(char *raw,
string = match_strdup(args);
if (string == NULL)
goto out_nomem;
mnt->nfs_server.address.sin_family = AF_INET;
mnt->nfs_server.address.sin_addr.s_addr =
in_aton(string);
nfs_parse_server_address(string, (struct sockaddr *)
&mnt->nfs_server.address,
&mnt->nfs_server.addrlen);
kfree(string);
break;
case Opt_clientaddr:
string = match_strdup(args);
if (string == NULL)
goto out_nomem;
kfree(mnt->client_address);
mnt->client_address = string;
break;
case Opt_mounthost:
string = match_strdup(args);
if (string == NULL)
goto out_nomem;
kfree(mnt->mount_server.hostname);
mnt->mount_server.hostname = string;
break;
case Opt_mountaddr:
string = match_strdup(args);
if (string == NULL)
goto out_nomem;
mnt->mount_server.address.sin_family = AF_INET;
mnt->mount_server.address.sin_addr.s_addr =
in_aton(string);
nfs_parse_server_address(string, (struct sockaddr *)
&mnt->mount_server.address,
&mnt->mount_server.addrlen);
kfree(string);
break;
@ -957,6 +1035,8 @@ static int nfs_parse_mount_options(char *raw,
}
}
nfs_set_port((struct sockaddr *)&mnt->nfs_server.address, port);
return 1;
out_nomem:
@ -987,7 +1067,8 @@ static int nfs_parse_mount_options(char *raw,
static int nfs_try_mount(struct nfs_parsed_mount_data *args,
struct nfs_fh *root_fh)
{
struct sockaddr_in sin;
struct sockaddr *sap = (struct sockaddr *)&args->mount_server.address;
char *hostname;
int status;
if (args->mount_server.version == 0) {
@ -997,25 +1078,32 @@ static int nfs_try_mount(struct nfs_parsed_mount_data *args,
args->mount_server.version = NFS_MNT_VERSION;
}
if (args->mount_server.hostname)
hostname = args->mount_server.hostname;
else
hostname = args->nfs_server.hostname;
/*
* Construct the mount server's address.
*/
if (args->mount_server.address.sin_addr.s_addr != INADDR_ANY)
sin = args->mount_server.address;
else
sin = args->nfs_server.address;
if (args->mount_server.address.ss_family == AF_UNSPEC) {
memcpy(sap, &args->nfs_server.address,
args->nfs_server.addrlen);
args->mount_server.addrlen = args->nfs_server.addrlen;
}
/*
* autobind will be used if mount_server.port == 0
*/
sin.sin_port = htons(args->mount_server.port);
nfs_set_port(sap, args->mount_server.port);
/*
* Now ask the mount server to map our export path
* to a file handle.
*/
status = nfs_mount((struct sockaddr *) &sin,
sizeof(sin),
args->nfs_server.hostname,
status = nfs_mount(sap,
args->mount_server.addrlen,
hostname,
args->nfs_server.export_path,
args->mount_server.version,
args->mount_server.protocol,
@ -1023,8 +1111,8 @@ static int nfs_try_mount(struct nfs_parsed_mount_data *args,
if (status == 0)
return 0;
dfprintk(MOUNT, "NFS: unable to mount server " NIPQUAD_FMT
", error %d\n", NIPQUAD(sin.sin_addr.s_addr), status);
dfprintk(MOUNT, "NFS: unable to mount server %s, error %d",
hostname, status);
return status;
}
@ -1043,9 +1131,6 @@ static int nfs_try_mount(struct nfs_parsed_mount_data *args,
*
* + breaking back: trying proto=udp after proto=tcp, v2 after v3,
* mountproto=tcp after mountproto=udp, and so on
*
* XXX: as far as I can tell, changing the NFS program number is not
* supported in the NFS client.
*/
static int nfs_validate_mount_data(void *options,
struct nfs_parsed_mount_data *args,
@ -1069,9 +1154,7 @@ static int nfs_validate_mount_data(void *options,
args->acdirmin = 30;
args->acdirmax = 60;
args->mount_server.protocol = XPRT_TRANSPORT_UDP;
args->mount_server.program = NFS_MNT_PROGRAM;
args->nfs_server.protocol = XPRT_TRANSPORT_TCP;
args->nfs_server.program = NFS_PROGRAM;
switch (data->version) {
case 1:
@ -1102,9 +1185,6 @@ static int nfs_validate_mount_data(void *options,
memset(mntfh->data + mntfh->size, 0,
sizeof(mntfh->data) - mntfh->size);
if (!nfs_verify_server_address((struct sockaddr *) &data->addr))
goto out_no_address;
/*
* Translate to nfs_parsed_mount_data, which nfs_fill_super
* can deal with.
@ -1119,7 +1199,14 @@ static int nfs_validate_mount_data(void *options,
args->acregmax = data->acregmax;
args->acdirmin = data->acdirmin;
args->acdirmax = data->acdirmax;
args->nfs_server.address = data->addr;
memcpy(&args->nfs_server.address, &data->addr,
sizeof(data->addr));
args->nfs_server.addrlen = sizeof(data->addr);
if (!nfs_verify_server_address((struct sockaddr *)
&args->nfs_server.address))
goto out_no_address;
if (!(data->flags & NFS_MOUNT_TCP))
args->nfs_server.protocol = XPRT_TRANSPORT_UDP;
/* N.B. caller will free nfs_server.hostname in all cases */
@ -1322,15 +1409,50 @@ static int nfs_set_super(struct super_block *s, void *data)
return ret;
}
static int nfs_compare_super_address(struct nfs_server *server1,
struct nfs_server *server2)
{
struct sockaddr *sap1, *sap2;
sap1 = (struct sockaddr *)&server1->nfs_client->cl_addr;
sap2 = (struct sockaddr *)&server2->nfs_client->cl_addr;
if (sap1->sa_family != sap2->sa_family)
return 0;
switch (sap1->sa_family) {
case AF_INET: {
struct sockaddr_in *sin1 = (struct sockaddr_in *)sap1;
struct sockaddr_in *sin2 = (struct sockaddr_in *)sap2;
if (sin1->sin_addr.s_addr != sin2->sin_addr.s_addr)
return 0;
if (sin1->sin_port != sin2->sin_port)
return 0;
break;
}
case AF_INET6: {
struct sockaddr_in6 *sin1 = (struct sockaddr_in6 *)sap1;
struct sockaddr_in6 *sin2 = (struct sockaddr_in6 *)sap2;
if (!ipv6_addr_equal(&sin1->sin6_addr, &sin2->sin6_addr))
return 0;
if (sin1->sin6_port != sin2->sin6_port)
return 0;
break;
}
default:
return 0;
}
return 1;
}
static int nfs_compare_super(struct super_block *sb, void *data)
{
struct nfs_sb_mountdata *sb_mntdata = data;
struct nfs_server *server = sb_mntdata->server, *old = NFS_SB(sb);
int mntflags = sb_mntdata->mntflags;
if (memcmp(&old->nfs_client->cl_addr,
&server->nfs_client->cl_addr,
sizeof(old->nfs_client->cl_addr)) != 0)
if (!nfs_compare_super_address(old, server))
return 0;
/* Note: NFS_MOUNT_UNSHARED == NFS4_MOUNT_UNSHARED */
if (old->flags & NFS_MOUNT_UNSHARED)
@ -1400,6 +1522,7 @@ static int nfs_get_sb(struct file_system_type *fs_type,
out:
kfree(data.nfs_server.hostname);
kfree(data.mount_server.hostname);
return error;
out_err_nosb:
@ -1527,6 +1650,28 @@ static void nfs4_fill_super(struct super_block *sb)
nfs_initialise_sb(sb);
}
/*
* If the user didn't specify a port, set the port number to
* the NFS version 4 default port.
*/
static void nfs4_default_port(struct sockaddr *sap)
{
switch (sap->sa_family) {
case AF_INET: {
struct sockaddr_in *ap = (struct sockaddr_in *)sap;
if (ap->sin_port == 0)
ap->sin_port = htons(NFS_PORT);
break;
}
case AF_INET6: {
struct sockaddr_in6 *ap = (struct sockaddr_in6 *)sap;
if (ap->sin6_port == 0)
ap->sin6_port = htons(NFS_PORT);
break;
}
}
}
/*
* Validate NFSv4 mount options
*/
@ -1534,6 +1679,7 @@ static int nfs4_validate_mount_data(void *options,
struct nfs_parsed_mount_data *args,
const char *dev_name)
{
struct sockaddr_in *ap;
struct nfs4_mount_data *data = (struct nfs4_mount_data *)options;
char *c;
@ -1554,18 +1700,21 @@ static int nfs4_validate_mount_data(void *options,
switch (data->version) {
case 1:
if (data->host_addrlen != sizeof(args->nfs_server.address))
ap = (struct sockaddr_in *)&args->nfs_server.address;
if (data->host_addrlen > sizeof(args->nfs_server.address))
goto out_no_address;
if (copy_from_user(&args->nfs_server.address,
data->host_addr,
sizeof(args->nfs_server.address)))
if (data->host_addrlen == 0)
goto out_no_address;
args->nfs_server.addrlen = data->host_addrlen;
if (copy_from_user(ap, data->host_addr, data->host_addrlen))
return -EFAULT;
if (args->nfs_server.address.sin_port == 0)
args->nfs_server.address.sin_port = htons(NFS_PORT);
if (!nfs_verify_server_address((struct sockaddr *)
&args->nfs_server.address))
goto out_no_address;
nfs4_default_port((struct sockaddr *)
&args->nfs_server.address);
switch (data->auth_flavourlen) {
case 0:
args->auth_flavors[0] = RPC_AUTH_UNIX;
@ -1623,6 +1772,9 @@ static int nfs4_validate_mount_data(void *options,
&args->nfs_server.address))
return -EINVAL;
nfs4_default_port((struct sockaddr *)
&args->nfs_server.address);
switch (args->auth_flavor_len) {
case 0:
args->auth_flavors[0] = RPC_AUTH_UNIX;
@ -1643,21 +1795,16 @@ static int nfs4_validate_mount_data(void *options,
len = c - dev_name;
if (len > NFS4_MAXNAMLEN)
return -ENAMETOOLONG;
args->nfs_server.hostname = kzalloc(len, GFP_KERNEL);
if (args->nfs_server.hostname == NULL)
return -ENOMEM;
strncpy(args->nfs_server.hostname, dev_name, len - 1);
/* N.B. caller will free nfs_server.hostname in all cases */
args->nfs_server.hostname = kstrndup(dev_name, len, GFP_KERNEL);
c++; /* step over the ':' */
len = strlen(c);
if (len > NFS4_MAXPATHLEN)
return -ENAMETOOLONG;
args->nfs_server.export_path = kzalloc(len + 1, GFP_KERNEL);
if (args->nfs_server.export_path == NULL)
return -ENOMEM;
strncpy(args->nfs_server.export_path, c, len);
args->nfs_server.export_path = kstrndup(c, len, GFP_KERNEL);
dprintk("MNTPATH: %s\n", args->nfs_server.export_path);
dprintk("NFS: MNTPATH: '%s'\n", args->nfs_server.export_path);
if (args->client_address == NULL)
goto out_no_client_address;

45
fs/nfs/unlink.c
View file

@ -14,6 +14,8 @@
#include <linux/sched.h>
#include <linux/wait.h>
#include "internal.h"
struct nfs_unlinkdata {
struct hlist_node list;
struct nfs_removeargs args;
@ -68,24 +70,6 @@ static void nfs_dec_sillycount(struct inode *dir)
wake_up(&nfsi->waitqueue);
}
/**
* nfs_async_unlink_init - Initialize the RPC info
* task: rpc_task of the sillydelete
*/
static void nfs_async_unlink_init(struct rpc_task *task, void *calldata)
{
struct nfs_unlinkdata *data = calldata;
struct inode *dir = data->dir;
struct rpc_message msg = {
.rpc_argp = &data->args,
.rpc_resp = &data->res,
.rpc_cred = data->cred,
};
NFS_PROTO(dir)->unlink_setup(&msg, dir);
rpc_call_setup(task, &msg, 0);
}
/**
* nfs_async_unlink_done - Sillydelete post-processing
* @task: rpc_task of the sillydelete
@ -113,32 +97,45 @@ static void nfs_async_unlink_release(void *calldata)
struct nfs_unlinkdata *data = calldata;
nfs_dec_sillycount(data->dir);
nfs_sb_deactive(NFS_SERVER(data->dir));
nfs_free_unlinkdata(data);
}
static const struct rpc_call_ops nfs_unlink_ops = {
.rpc_call_prepare = nfs_async_unlink_init,
.rpc_call_done = nfs_async_unlink_done,
.rpc_release = nfs_async_unlink_release,
};
static int nfs_do_call_unlink(struct dentry *parent, struct inode *dir, struct nfs_unlinkdata *data)
{
struct rpc_message msg = {
.rpc_argp = &data->args,
.rpc_resp = &data->res,
.rpc_cred = data->cred,
};
struct rpc_task_setup task_setup_data = {
.rpc_message = &msg,
.callback_ops = &nfs_unlink_ops,
.callback_data = data,
.flags = RPC_TASK_ASYNC,
};
struct rpc_task *task;
struct dentry *alias;
alias = d_lookup(parent, &data->args.name);
if (alias != NULL) {
int ret = 0;
/*
* Hey, we raced with lookup... See if we need to transfer
* the sillyrename information to the aliased dentry.
*/
nfs_free_dname(data);
spin_lock(&alias->d_lock);
if (!(alias->d_flags & DCACHE_NFSFS_RENAMED)) {
if (alias->d_inode != NULL &&
!(alias->d_flags & DCACHE_NFSFS_RENAMED)) {
alias->d_fsdata = data;
alias->d_flags ^= DCACHE_NFSFS_RENAMED;
alias->d_flags |= DCACHE_NFSFS_RENAMED;
ret = 1;
}
spin_unlock(&alias->d_lock);
@ -151,10 +148,14 @@ static int nfs_do_call_unlink(struct dentry *parent, struct inode *dir, struct n
nfs_dec_sillycount(dir);
return 0;
}
nfs_sb_active(NFS_SERVER(dir));
data->args.fh = NFS_FH(dir);
nfs_fattr_init(&data->res.dir_attr);
task = rpc_run_task(NFS_CLIENT(dir), RPC_TASK_ASYNC, &nfs_unlink_ops, data);
NFS_PROTO(dir)->unlink_setup(&msg, dir);
task_setup_data.rpc_client = NFS_CLIENT(dir);
task = rpc_run_task(&task_setup_data);
if (!IS_ERR(task))
rpc_put_task(task);
return 1;

107
fs/nfs/write.c
View file

@ -196,7 +196,7 @@ static int nfs_writepage_setup(struct nfs_open_context *ctx, struct page *page,
}
/* Update file length */
nfs_grow_file(page, offset, count);
nfs_unlock_request(req);
nfs_clear_page_tag_locked(req);
return 0;
}
@ -252,7 +252,6 @@ static int nfs_page_async_flush(struct nfs_pageio_descriptor *pgio,
struct page *page)
{
struct inode *inode = page->mapping->host;
struct nfs_inode *nfsi = NFS_I(inode);
struct nfs_page *req;
int ret;
@ -263,10 +262,10 @@ static int nfs_page_async_flush(struct nfs_pageio_descriptor *pgio,
spin_unlock(&inode->i_lock);
return 0;
}
if (nfs_lock_request_dontget(req))
if (nfs_set_page_tag_locked(req))
break;
/* Note: If we hold the page lock, as is the case in nfs_writepage,
* then the call to nfs_lock_request_dontget() will always
* then the call to nfs_set_page_tag_locked() will always
* succeed provided that someone hasn't already marked the
* request as dirty (in which case we don't care).
*/
@ -280,7 +279,7 @@ static int nfs_page_async_flush(struct nfs_pageio_descriptor *pgio,
if (test_bit(PG_NEED_COMMIT, &req->wb_flags)) {
/* This request is marked for commit */
spin_unlock(&inode->i_lock);
nfs_unlock_request(req);
nfs_clear_page_tag_locked(req);
nfs_pageio_complete(pgio);
return 0;
}
@ -288,8 +287,6 @@ static int nfs_page_async_flush(struct nfs_pageio_descriptor *pgio,
spin_unlock(&inode->i_lock);
BUG();
}
radix_tree_tag_set(&nfsi->nfs_page_tree, req->wb_index,
NFS_PAGE_TAG_LOCKED);
spin_unlock(&inode->i_lock);
nfs_pageio_add_request(pgio, req);
return 0;
@ -381,6 +378,7 @@ static int nfs_inode_add_request(struct inode *inode, struct nfs_page *req)
set_page_private(req->wb_page, (unsigned long)req);
nfsi->npages++;
kref_get(&req->wb_kref);
radix_tree_tag_set(&nfsi->nfs_page_tree, req->wb_index, NFS_PAGE_TAG_LOCKED);
return 0;
}
@ -596,7 +594,7 @@ static struct nfs_page * nfs_update_request(struct nfs_open_context* ctx,
spin_lock(&inode->i_lock);
req = nfs_page_find_request_locked(page);
if (req) {
if (!nfs_lock_request_dontget(req)) {
if (!nfs_set_page_tag_locked(req)) {
int error;
spin_unlock(&inode->i_lock);
@ -646,7 +644,7 @@ static struct nfs_page * nfs_update_request(struct nfs_open_context* ctx,
|| req->wb_page != page
|| !nfs_dirty_request(req)
|| offset > rqend || end < req->wb_offset) {
nfs_unlock_request(req);
nfs_clear_page_tag_locked(req);
return ERR_PTR(-EBUSY);
}
@ -755,7 +753,7 @@ static void nfs_writepage_release(struct nfs_page *req)
nfs_clear_page_tag_locked(req);
}
static inline int flush_task_priority(int how)
static int flush_task_priority(int how)
{
switch (how & (FLUSH_HIGHPRI|FLUSH_LOWPRI)) {
case FLUSH_HIGHPRI:
@ -775,15 +773,31 @@ static void nfs_write_rpcsetup(struct nfs_page *req,
unsigned int count, unsigned int offset,
int how)
{
struct inode *inode;
int flags;
struct inode *inode = req->wb_context->path.dentry->d_inode;
int flags = (how & FLUSH_SYNC) ? 0 : RPC_TASK_ASYNC;
int priority = flush_task_priority(how);
struct rpc_task *task;
struct rpc_message msg = {
.rpc_argp = &data->args,
.rpc_resp = &data->res,
.rpc_cred = req->wb_context->cred,
};
struct rpc_task_setup task_setup_data = {
.rpc_client = NFS_CLIENT(inode),
.task = &data->task,
.rpc_message = &msg,
.callback_ops = call_ops,
.callback_data = data,
.flags = flags,
.priority = priority,
};
/* Set up the RPC argument and reply structs
* NB: take care not to mess about with data->commit et al. */
data->req = req;
data->inode = inode = req->wb_context->path.dentry->d_inode;
data->cred = req->wb_context->cred;
data->cred = msg.rpc_cred;
data->args.fh = NFS_FH(inode);
data->args.offset = req_offset(req) + offset;
@ -791,6 +805,12 @@ static void nfs_write_rpcsetup(struct nfs_page *req,
data->args.pages = data->pagevec;
data->args.count = count;
data->args.context = req->wb_context;
data->args.stable = NFS_UNSTABLE;
if (how & FLUSH_STABLE) {
data->args.stable = NFS_DATA_SYNC;
if (!NFS_I(inode)->ncommit)
data->args.stable = NFS_FILE_SYNC;
}
data->res.fattr = &data->fattr;
data->res.count = count;
@ -798,12 +818,7 @@ static void nfs_write_rpcsetup(struct nfs_page *req,
nfs_fattr_init(&data->fattr);
/* Set up the initial task struct. */
flags = (how & FLUSH_SYNC) ? 0 : RPC_TASK_ASYNC;
rpc_init_task(&data->task, NFS_CLIENT(inode), flags, call_ops, data);
NFS_PROTO(inode)->write_setup(data, how);
data->task.tk_priority = flush_task_priority(how);
data->task.tk_cookie = (unsigned long)inode;
NFS_PROTO(inode)->write_setup(data, &msg);
dprintk("NFS: %5u initiated write call "
"(req %s/%Ld, %u bytes @ offset %Lu)\n",
@ -812,16 +827,10 @@ static void nfs_write_rpcsetup(struct nfs_page *req,
(long long)NFS_FILEID(inode),
count,
(unsigned long long)data->args.offset);
}
static void nfs_execute_write(struct nfs_write_data *data)
{
struct rpc_clnt *clnt = NFS_CLIENT(data->inode);
sigset_t oldset;
rpc_clnt_sigmask(clnt, &oldset);
rpc_execute(&data->task);
rpc_clnt_sigunmask(clnt, &oldset);
task = rpc_run_task(&task_setup_data);
if (!IS_ERR(task))
rpc_put_task(task);
}
/*
@ -868,7 +877,6 @@ static int nfs_flush_multi(struct inode *inode, struct list_head *head, unsigned
wsize, offset, how);
offset += wsize;
nbytes -= wsize;
nfs_execute_write(data);
} while (nbytes != 0);
return 0;
@ -916,7 +924,6 @@ static int nfs_flush_one(struct inode *inode, struct list_head *head, unsigned i
/* Set up the argument struct */
nfs_write_rpcsetup(req, data, &nfs_write_full_ops, count, 0, how);
nfs_execute_write(data);
return 0;
out_bad:
while (!list_empty(head)) {
@ -932,7 +939,7 @@ static int nfs_flush_one(struct inode *inode, struct list_head *head, unsigned i
static void nfs_pageio_init_write(struct nfs_pageio_descriptor *pgio,
struct inode *inode, int ioflags)
{
int wsize = NFS_SERVER(inode)->wsize;
size_t wsize = NFS_SERVER(inode)->wsize;
if (wsize < PAGE_CACHE_SIZE)
nfs_pageio_init(pgio, inode, nfs_flush_multi, wsize, ioflags);
@ -1146,19 +1153,33 @@ static void nfs_commit_rpcsetup(struct list_head *head,
struct nfs_write_data *data,
int how)
{
struct nfs_page *first;
struct inode *inode;
int flags;
struct nfs_page *first = nfs_list_entry(head->next);
struct inode *inode = first->wb_context->path.dentry->d_inode;
int flags = (how & FLUSH_SYNC) ? 0 : RPC_TASK_ASYNC;
int priority = flush_task_priority(how);
struct rpc_task *task;
struct rpc_message msg = {
.rpc_argp = &data->args,
.rpc_resp = &data->res,
.rpc_cred = first->wb_context->cred,
};
struct rpc_task_setup task_setup_data = {
.task = &data->task,
.rpc_client = NFS_CLIENT(inode),
.rpc_message = &msg,
.callback_ops = &nfs_commit_ops,
.callback_data = data,
.flags = flags,
.priority = priority,
};
/* Set up the RPC argument and reply structs
* NB: take care not to mess about with data->commit et al. */
list_splice_init(head, &data->pages);
first = nfs_list_entry(data->pages.next);
inode = first->wb_context->path.dentry->d_inode;
data->inode = inode;
data->cred = first->wb_context->cred;
data->cred = msg.rpc_cred;
data->args.fh = NFS_FH(data->inode);
/* Note: we always request a commit of the entire inode */
@ -1170,14 +1191,13 @@ static void nfs_commit_rpcsetup(struct list_head *head,
nfs_fattr_init(&data->fattr);
/* Set up the initial task struct. */
flags = (how & FLUSH_SYNC) ? 0 : RPC_TASK_ASYNC;
rpc_init_task(&data->task, NFS_CLIENT(inode), flags, &nfs_commit_ops, data);
NFS_PROTO(inode)->commit_setup(data, how);
NFS_PROTO(inode)->commit_setup(data, &msg);
data->task.tk_priority = flush_task_priority(how);
data->task.tk_cookie = (unsigned long)inode;
dprintk("NFS: %5u initiated commit call\n", data->task.tk_pid);
task = rpc_run_task(&task_setup_data);
if (!IS_ERR(task))
rpc_put_task(task);
}
/*
@ -1197,7 +1217,6 @@ nfs_commit_list(struct inode *inode, struct list_head *head, int how)
/* Set up the argument struct */
nfs_commit_rpcsetup(head, data, how);
nfs_execute_write(data);
return 0;
out_bad:
while (!list_empty(head)) {

19
include/linux/lockd/bind.h
View file

@ -32,10 +32,27 @@ struct nlmsvc_binding {
extern struct nlmsvc_binding * nlmsvc_ops;
/*
* Similar to nfs_client_initdata, but without the NFS-specific
* rpc_ops field.
*/
struct nlmclnt_initdata {
const char *hostname;
const struct sockaddr *address;
size_t addrlen;
unsigned short protocol;
u32 nfs_version;
};
/*
* Functions exported by the lockd module
*/
extern int nlmclnt_proc(struct inode *, int, struct file_lock *);
extern struct nlm_host *nlmclnt_init(const struct nlmclnt_initdata *nlm_init);
extern void nlmclnt_done(struct nlm_host *host);
extern int nlmclnt_proc(struct nlm_host *host, int cmd,
struct file_lock *fl);
extern int lockd_up(int proto);
extern void lockd_down(void);

74
include/linux/nfs_fs.h
View file

@ -196,28 +196,67 @@ struct nfs_inode {
#define NFS_INO_STALE (2) /* possible stale inode */
#define NFS_INO_ACL_LRU_SET (3) /* Inode is on the LRU list */
static inline struct nfs_inode *NFS_I(struct inode *inode)
static inline struct nfs_inode *NFS_I(const struct inode *inode)
{
return container_of(inode, struct nfs_inode, vfs_inode);
}
#define NFS_SB(s) ((struct nfs_server *)(s->s_fs_info))
#define NFS_FH(inode) (&NFS_I(inode)->fh)
#define NFS_SERVER(inode) (NFS_SB(inode->i_sb))
#define NFS_CLIENT(inode) (NFS_SERVER(inode)->client)
#define NFS_PROTO(inode) (NFS_SERVER(inode)->nfs_client->rpc_ops)
#define NFS_COOKIEVERF(inode) (NFS_I(inode)->cookieverf)
#define NFS_MINATTRTIMEO(inode) \
(S_ISDIR(inode->i_mode)? NFS_SERVER(inode)->acdirmin \
: NFS_SERVER(inode)->acregmin)
#define NFS_MAXATTRTIMEO(inode) \
(S_ISDIR(inode->i_mode)? NFS_SERVER(inode)->acdirmax \
: NFS_SERVER(inode)->acregmax)
static inline struct nfs_server *NFS_SB(const struct super_block *s)
{
return (struct nfs_server *)(s->s_fs_info);
}
#define NFS_FLAGS(inode) (NFS_I(inode)->flags)
#define NFS_STALE(inode) (test_bit(NFS_INO_STALE, &NFS_FLAGS(inode)))
static inline struct nfs_fh *NFS_FH(const struct inode *inode)
{
return &NFS_I(inode)->fh;
}
#define NFS_FILEID(inode) (NFS_I(inode)->fileid)
static inline struct nfs_server *NFS_SERVER(const struct inode *inode)
{
return NFS_SB(inode->i_sb);
}
static inline struct rpc_clnt *NFS_CLIENT(const struct inode *inode)
{
return NFS_SERVER(inode)->client;
}
static inline const struct nfs_rpc_ops *NFS_PROTO(const struct inode *inode)
{
return NFS_SERVER(inode)->nfs_client->rpc_ops;
}
static inline __be32 *NFS_COOKIEVERF(const struct inode *inode)
{
return NFS_I(inode)->cookieverf;
}
static inline unsigned NFS_MINATTRTIMEO(const struct inode *inode)
{
struct nfs_server *nfss = NFS_SERVER(inode);
return S_ISDIR(inode->i_mode) ? nfss->acdirmin : nfss->acregmin;
}
static inline unsigned NFS_MAXATTRTIMEO(const struct inode *inode)
{
struct nfs_server *nfss = NFS_SERVER(inode);
return S_ISDIR(inode->i_mode) ? nfss->acdirmax : nfss->acregmax;
}
static inline int NFS_STALE(const struct inode *inode)
{
return test_bit(NFS_INO_STALE, &NFS_I(inode)->flags);
}
static inline __u64 NFS_FILEID(const struct inode *inode)
{
return NFS_I(inode)->fileid;
}
static inline void set_nfs_fileid(struct inode *inode, __u64 fileid)
{
NFS_I(inode)->fileid = fileid;
}
static inline void nfs_mark_for_revalidate(struct inode *inode)
{
@ -237,7 +276,7 @@ static inline int nfs_server_capable(struct inode *inode, int cap)
static inline int NFS_USE_READDIRPLUS(struct inode *inode)
{
return test_bit(NFS_INO_ADVISE_RDPLUS, &NFS_FLAGS(inode));
return test_bit(NFS_INO_ADVISE_RDPLUS, &NFS_I(inode)->flags);
}
static inline void nfs_set_verifier(struct dentry * dentry, unsigned long verf)
@ -366,6 +405,7 @@ extern const struct inode_operations nfs3_dir_inode_operations;
extern const struct file_operations nfs_dir_operations;
extern struct dentry_operations nfs_dentry_operations;
extern void nfs_force_lookup_revalidate(struct inode *dir);
extern int nfs_instantiate(struct dentry *dentry, struct nfs_fh *fh, struct nfs_fattr *fattr);
extern int nfs_may_open(struct inode *inode, struct rpc_cred *cred, int openflags);
extern void nfs_access_zap_cache(struct inode *inode);

17
include/linux/nfs_fs_sb.h
View file

@ -3,8 +3,12 @@
#include <linux/list.h>
#include <linux/backing-dev.h>
#include <linux/wait.h>
#include <asm/atomic.h>
struct nfs_iostats;
struct nlm_host;
/*
* The nfs_client identifies our client state to the server.
@ -14,20 +18,19 @@ struct nfs_client {
int cl_cons_state; /* current construction state (-ve: init error) */
#define NFS_CS_READY 0 /* ready to be used */
#define NFS_CS_INITING 1 /* busy initialising */
int cl_nfsversion; /* NFS protocol version */
unsigned long cl_res_state; /* NFS resources state */
#define NFS_CS_CALLBACK 1 /* - callback started */
#define NFS_CS_IDMAP 2 /* - idmap started */
#define NFS_CS_RENEWD 3 /* - renewd started */
struct sockaddr_in cl_addr; /* server identifier */
struct sockaddr_storage cl_addr; /* server identifier */
size_t cl_addrlen;
char * cl_hostname; /* hostname of server */
struct list_head cl_share_link; /* link in global client list */
struct list_head cl_superblocks; /* List of nfs_server structs */
struct rpc_clnt * cl_rpcclient;
const struct nfs_rpc_ops *rpc_ops; /* NFS protocol vector */
unsigned long retrans_timeo; /* retransmit timeout */
unsigned int retrans_count; /* number of retransmit tries */
int cl_proto; /* Network transport protocol */
#ifdef CONFIG_NFS_V4
u64 cl_clientid; /* constant */
@ -62,7 +65,7 @@ struct nfs_client {
/* Our own IP address, as a null-terminated string.
* This is used to generate the clientid, and the callback address.
*/
char cl_ipaddr[16];
char cl_ipaddr[48];
unsigned char cl_id_uniquifier;
#endif
};
@ -78,6 +81,7 @@ struct nfs_server {
struct list_head master_link; /* link in master servers list */
struct rpc_clnt * client; /* RPC client handle */
struct rpc_clnt * client_acl; /* ACL RPC client handle */
struct nlm_host *nlm_host; /* NLM client handle */
struct nfs_iostats * io_stats; /* I/O statistics */
struct backing_dev_info backing_dev_info;
atomic_long_t writeback; /* number of writeback pages */
@ -110,6 +114,9 @@ struct nfs_server {
filesystem */
#endif
void (*destroy)(struct nfs_server *);
atomic_t active; /* Keep trace of any activity to this server */
wait_queue_head_t active_wq; /* Wait for any activity to stop */
};
/* Server capabilities */

13
include/linux/nfs_page.h
View file

@ -83,6 +83,7 @@ extern void nfs_pageio_complete(struct nfs_pageio_descriptor *desc);
extern void nfs_pageio_cond_complete(struct nfs_pageio_descriptor *, pgoff_t);
extern int nfs_wait_on_request(struct nfs_page *);
extern void nfs_unlock_request(struct nfs_page *req);
extern int nfs_set_page_tag_locked(struct nfs_page *req);
extern void nfs_clear_page_tag_locked(struct nfs_page *req);
@ -95,18 +96,6 @@ nfs_lock_request_dontget(struct nfs_page *req)
return !test_and_set_bit(PG_BUSY, &req->wb_flags);
}
/*
* Lock the page of an asynchronous request and take a reference
*/
static inline int
nfs_lock_request(struct nfs_page *req)
{
if (test_and_set_bit(PG_BUSY, &req->wb_flags))
return 0;
kref_get(&req->wb_kref);
return 1;
}
/**
* nfs_list_add_request - Insert a request into a list
* @req: request

21
include/linux/nfs_xdr.h
View file

@ -666,16 +666,17 @@ struct nfs4_rename_res {
struct nfs_fattr * new_fattr;
};
#define NFS4_SETCLIENTID_NAMELEN (56)
struct nfs4_setclientid {
const nfs4_verifier * sc_verifier; /* request */
const nfs4_verifier * sc_verifier;
unsigned int sc_name_len;
char sc_name[48]; /* request */
u32 sc_prog; /* request */
char sc_name[NFS4_SETCLIENTID_NAMELEN];
u32 sc_prog;
unsigned int sc_netid_len;
char sc_netid[4]; /* request */
char sc_netid[RPCBIND_MAXNETIDLEN];
unsigned int sc_uaddr_len;
char sc_uaddr[24]; /* request */
u32 sc_cb_ident; /* request */
char sc_uaddr[RPCBIND_MAXUADDRLEN];
u32 sc_cb_ident;
};
struct nfs4_statfs_arg {
@ -773,7 +774,7 @@ struct nfs_access_entry;
* RPC procedure vector for NFSv2/NFSv3 demuxing
*/
struct nfs_rpc_ops {
int version; /* Protocol version */
u32 version; /* Protocol version */
struct dentry_operations *dentry_ops;
const struct inode_operations *dir_inode_ops;
const struct inode_operations *file_inode_ops;
@ -816,11 +817,11 @@ struct nfs_rpc_ops {
struct nfs_pathconf *);
int (*set_capabilities)(struct nfs_server *, struct nfs_fh *);
__be32 *(*decode_dirent)(__be32 *, struct nfs_entry *, int plus);
void (*read_setup) (struct nfs_read_data *);
void (*read_setup) (struct nfs_read_data *, struct rpc_message *);
int (*read_done) (struct rpc_task *, struct nfs_read_data *);
void (*write_setup) (struct nfs_write_data *, int how);
void (*write_setup) (struct nfs_write_data *, struct rpc_message *);
int (*write_done) (struct rpc_task *, struct nfs_write_data *);
void (*commit_setup) (struct nfs_write_data *, int how);
void (*commit_setup) (struct nfs_write_data *, struct rpc_message *);
int (*commit_done) (struct rpc_task *, struct nfs_write_data *);
int (*file_open) (struct inode *, struct file *);
int (*file_release) (struct inode *, struct file *);

11
include/linux/sunrpc/clnt.h
View file

@ -46,6 +46,7 @@ struct rpc_clnt {
cl_autobind : 1;/* use getport() */
struct rpc_rtt * cl_rtt; /* RTO estimator data */
const struct rpc_timeout *cl_timeout; /* Timeout strategy */
int cl_nodelen; /* nodename length */
char cl_nodename[UNX_MAXNODENAME];
@ -54,6 +55,7 @@ struct rpc_clnt {
struct dentry * cl_dentry; /* inode */
struct rpc_clnt * cl_parent; /* Points to parent of clones */
struct rpc_rtt cl_rtt_default;
struct rpc_timeout cl_timeout_default;
struct rpc_program * cl_program;
char cl_inline_name[32];
};
@ -99,7 +101,7 @@ struct rpc_create_args {
struct sockaddr *address;
size_t addrsize;
struct sockaddr *saddress;
struct rpc_timeout *timeout;
const struct rpc_timeout *timeout;
char *servername;
struct rpc_program *program;
u32 version;
@ -123,11 +125,10 @@ void rpc_shutdown_client(struct rpc_clnt *);
void rpc_release_client(struct rpc_clnt *);
int rpcb_register(u32, u32, int, unsigned short, int *);
int rpcb_getport_sync(struct sockaddr_in *, __u32, __u32, int);
int rpcb_getport_sync(struct sockaddr_in *, u32, u32, int);
void rpcb_getport_async(struct rpc_task *);
void rpc_call_setup(struct rpc_task *, struct rpc_message *, int);
void rpc_call_start(struct rpc_task *);
int rpc_call_async(struct rpc_clnt *clnt, struct rpc_message *msg,
int flags, const struct rpc_call_ops *tk_ops,
void *calldata);
@ -142,7 +143,7 @@ void rpc_setbufsize(struct rpc_clnt *, unsigned int, unsigned int);
size_t rpc_max_payload(struct rpc_clnt *);
void rpc_force_rebind(struct rpc_clnt *);
size_t rpc_peeraddr(struct rpc_clnt *, struct sockaddr *, size_t);
char * rpc_peeraddr2str(struct rpc_clnt *, enum rpc_display_format_t);
const char *rpc_peeraddr2str(struct rpc_clnt *, enum rpc_display_format_t);
#endif /* __KERNEL__ */
#endif /* _LINUX_SUNRPC_CLNT_H */

39
include/linux/sunrpc/msg_prot.h
View file

@ -152,5 +152,44 @@ typedef __be32 rpc_fraghdr;
*/
#define RPCBIND_MAXNETIDLEN (4u)
/*
* Universal addresses are introduced in RFC 1833 and further spelled
* out in RFC 3530. RPCBIND_MAXUADDRLEN defines a maximum byte length
* of a universal address for use in allocating buffers and character
* arrays.
*
* Quoting RFC 3530, section 2.2:
*
* For TCP over IPv4 and for UDP over IPv4, the format of r_addr is the
* US-ASCII string:
*
* h1.h2.h3.h4.p1.p2
*
* The prefix, "h1.h2.h3.h4", is the standard textual form for
* representing an IPv4 address, which is always four octets long.
* Assuming big-endian ordering, h1, h2, h3, and h4, are respectively,
* the first through fourth octets each converted to ASCII-decimal.
* Assuming big-endian ordering, p1 and p2 are, respectively, the first
* and second octets each converted to ASCII-decimal. For example, if a
* host, in big-endian order, has an address of 0x0A010307 and there is
* a service listening on, in big endian order, port 0x020F (decimal
* 527), then the complete universal address is "10.1.3.7.2.15".
*
* ...
*
* For TCP over IPv6 and for UDP over IPv6, the format of r_addr is the
* US-ASCII string:
*
* x1:x2:x3:x4:x5:x6:x7:x8.p1.p2
*
* The suffix "p1.p2" is the service port, and is computed the same way
* as with universal addresses for TCP and UDP over IPv4. The prefix,
* "x1:x2:x3:x4:x5:x6:x7:x8", is the standard textual form for
* representing an IPv6 address as defined in Section 2.2 of [RFC2373].
* Additionally, the two alternative forms specified in Section 2.2 of
* [RFC2373] are also acceptable.
*/
#define RPCBIND_MAXUADDRLEN (56u)
#endif /* __KERNEL__ */
#endif /* _LINUX_SUNRPC_MSGPROT_H_ */

57
include/linux/sunrpc/sched.h
View file

@ -56,8 +56,6 @@ struct rpc_task {
__u8 tk_garb_retry;
__u8 tk_cred_retry;
unsigned long tk_cookie; /* Cookie for batching tasks */
/*
* timeout_fn to be executed by timer bottom half
* callback to be executed after waking up
@ -78,7 +76,6 @@ struct rpc_task {
struct timer_list tk_timer; /* kernel timer */
unsigned long tk_timeout; /* timeout for rpc_sleep() */
unsigned short tk_flags; /* misc flags */
unsigned char tk_priority : 2;/* Task priority */
unsigned long tk_runstate; /* Task run status */
struct workqueue_struct *tk_workqueue; /* Normally rpciod, but could
* be any workqueue
@ -94,6 +91,9 @@ struct rpc_task {
unsigned long tk_start; /* RPC task init timestamp */
long tk_rtt; /* round-trip time (jiffies) */
pid_t tk_owner; /* Process id for batching tasks */
unsigned char tk_priority : 2;/* Task priority */
#ifdef RPC_DEBUG
unsigned short tk_pid; /* debugging aid */
#endif
@ -117,6 +117,15 @@ struct rpc_call_ops {
void (*rpc_release)(void *);
};
struct rpc_task_setup {
struct rpc_task *task;
struct rpc_clnt *rpc_client;
const struct rpc_message *rpc_message;
const struct rpc_call_ops *callback_ops;
void *callback_data;
unsigned short flags;
signed char priority;
};
/*
* RPC task flags
@ -180,10 +189,10 @@ struct rpc_call_ops {
* Note: if you change these, you must also change
* the task initialization definitions below.
*/
#define RPC_PRIORITY_LOW 0
#define RPC_PRIORITY_NORMAL 1
#define RPC_PRIORITY_HIGH 2
#define RPC_NR_PRIORITY (RPC_PRIORITY_HIGH+1)
#define RPC_PRIORITY_LOW (-1)
#define RPC_PRIORITY_NORMAL (0)
#define RPC_PRIORITY_HIGH (1)
#define RPC_NR_PRIORITY (1 + RPC_PRIORITY_HIGH - RPC_PRIORITY_LOW)
/*
* RPC synchronization objects
@ -191,7 +200,7 @@ struct rpc_call_ops {
struct rpc_wait_queue {
spinlock_t lock;
struct list_head tasks[RPC_NR_PRIORITY]; /* task queue for each priority level */
unsigned long cookie; /* cookie of last task serviced */
pid_t owner; /* process id of last task serviced */
unsigned char maxpriority; /* maximum priority (0 if queue is not a priority queue) */
unsigned char priority; /* current priority */
unsigned char count; /* # task groups remaining serviced so far */
@ -208,41 +217,13 @@ struct rpc_wait_queue {
* performance of NFS operations such as read/write.
*/
#define RPC_BATCH_COUNT 16
#ifndef RPC_DEBUG
# define RPC_WAITQ_INIT(var,qname) { \
.lock = __SPIN_LOCK_UNLOCKED(var.lock), \
.tasks = { \
[0] = LIST_HEAD_INIT(var.tasks[0]), \
[1] = LIST_HEAD_INIT(var.tasks[1]), \
[2] = LIST_HEAD_INIT(var.tasks[2]), \
}, \
}
#else
# define RPC_WAITQ_INIT(var,qname) { \
.lock = __SPIN_LOCK_UNLOCKED(var.lock), \
.tasks = { \
[0] = LIST_HEAD_INIT(var.tasks[0]), \
[1] = LIST_HEAD_INIT(var.tasks[1]), \
[2] = LIST_HEAD_INIT(var.tasks[2]), \
}, \
.name = qname, \
}
#endif
# define RPC_WAITQ(var,qname) struct rpc_wait_queue var = RPC_WAITQ_INIT(var,qname)
#define RPC_IS_PRIORITY(q) ((q)->maxpriority > 0)
/*
* Function prototypes
*/
struct rpc_task *rpc_new_task(struct rpc_clnt *, int flags,
const struct rpc_call_ops *ops, void *data);
struct rpc_task *rpc_run_task(struct rpc_clnt *clnt, int flags,
const struct rpc_call_ops *ops, void *data);
void rpc_init_task(struct rpc_task *task, struct rpc_clnt *clnt,
int flags, const struct rpc_call_ops *ops,
void *data);
struct rpc_task *rpc_new_task(const struct rpc_task_setup *);
struct rpc_task *rpc_run_task(const struct rpc_task_setup *);
void rpc_put_task(struct rpc_task *);
void rpc_exit_task(struct rpc_task *);
void rpc_release_calldata(const struct rpc_call_ops *, void *);

14
include/linux/sunrpc/xprt.h
View file

@ -120,7 +120,7 @@ struct rpc_xprt {
struct kref kref; /* Reference count */
struct rpc_xprt_ops * ops; /* transport methods */
struct rpc_timeout timeout; /* timeout parms */
const struct rpc_timeout *timeout; /* timeout parms */
struct sockaddr_storage addr; /* server address */
size_t addrlen; /* size of server address */
int prot; /* IP protocol */
@ -183,7 +183,7 @@ struct rpc_xprt {
bklog_u; /* backlog queue utilization */
} stat;
char * address_strings[RPC_DISPLAY_MAX];
const char *address_strings[RPC_DISPLAY_MAX];
};
struct xprt_create {
@ -191,7 +191,6 @@ struct xprt_create {
struct sockaddr * srcaddr; /* optional local address */
struct sockaddr * dstaddr; /* remote peer address */
size_t addrlen;
struct rpc_timeout * timeout; /* optional timeout parameters */
};
struct xprt_class {
@ -202,11 +201,6 @@ struct xprt_class {
char name[32];
};
/*
* Transport operations used by ULPs
*/
void xprt_set_timeout(struct rpc_timeout *to, unsigned int retr, unsigned long incr);
/*
* Generic internal transport functions
*/
@ -245,7 +239,8 @@ void xprt_adjust_cwnd(struct rpc_task *task, int result);
struct rpc_rqst * xprt_lookup_rqst(struct rpc_xprt *xprt, __be32 xid);
void xprt_complete_rqst(struct rpc_task *task, int copied);
void xprt_release_rqst_cong(struct rpc_task *task);
void xprt_disconnect(struct rpc_xprt *xprt);
void xprt_disconnect_done(struct rpc_xprt *xprt);
void xprt_force_disconnect(struct rpc_xprt *xprt);
/*
* Reserved bit positions in xprt->state
@ -256,6 +251,7 @@ void xprt_disconnect(struct rpc_xprt *xprt);
#define XPRT_CLOSE_WAIT (3)
#define XPRT_BOUND (4)
#define XPRT_BINDING (5)
#define XPRT_CLOSING (6)
static inline void xprt_set_connected(struct rpc_xprt *xprt)
{

13
net/sunrpc/auth.c
View file

@ -51,6 +51,7 @@ rpcauth_register(const struct rpc_authops *ops)
spin_unlock(&rpc_authflavor_lock);
return ret;
}
EXPORT_SYMBOL_GPL(rpcauth_register);
int
rpcauth_unregister(const struct rpc_authops *ops)
@ -68,6 +69,7 @@ rpcauth_unregister(const struct rpc_authops *ops)
spin_unlock(&rpc_authflavor_lock);
return ret;
}
EXPORT_SYMBOL_GPL(rpcauth_unregister);
struct rpc_auth *
rpcauth_create(rpc_authflavor_t pseudoflavor, struct rpc_clnt *clnt)
@ -102,6 +104,7 @@ rpcauth_create(rpc_authflavor_t pseudoflavor, struct rpc_clnt *clnt)
out:
return auth;
}
EXPORT_SYMBOL_GPL(rpcauth_create);
void
rpcauth_release(struct rpc_auth *auth)
@ -151,6 +154,7 @@ rpcauth_init_credcache(struct rpc_auth *auth)
auth->au_credcache = new;
return 0;
}
EXPORT_SYMBOL_GPL(rpcauth_init_credcache);
/*
* Destroy a list of credentials
@ -213,6 +217,7 @@ rpcauth_destroy_credcache(struct rpc_auth *auth)
kfree(cache);
}
}
EXPORT_SYMBOL_GPL(rpcauth_destroy_credcache);
/*
* Remove stale credentials. Avoid sleeping inside the loop.
@ -332,6 +337,7 @@ rpcauth_lookup_credcache(struct rpc_auth *auth, struct auth_cred * acred,
out:
return cred;
}
EXPORT_SYMBOL_GPL(rpcauth_lookup_credcache);
struct rpc_cred *
rpcauth_lookupcred(struct rpc_auth *auth, int flags)
@ -350,6 +356,7 @@ rpcauth_lookupcred(struct rpc_auth *auth, int flags)
put_group_info(acred.group_info);
return ret;
}
EXPORT_SYMBOL_GPL(rpcauth_lookupcred);
void
rpcauth_init_cred(struct rpc_cred *cred, const struct auth_cred *acred,
@ -366,7 +373,7 @@ rpcauth_init_cred(struct rpc_cred *cred, const struct auth_cred *acred,
#endif
cred->cr_uid = acred->uid;
}
EXPORT_SYMBOL(rpcauth_init_cred);
EXPORT_SYMBOL_GPL(rpcauth_init_cred);
struct rpc_cred *
rpcauth_bindcred(struct rpc_task *task)
@ -378,6 +385,7 @@ rpcauth_bindcred(struct rpc_task *task)
.group_info = current->group_info,
};
struct rpc_cred *ret;
sigset_t oldset;
int flags = 0;
dprintk("RPC: %5u looking up %s cred\n",
@ -385,7 +393,9 @@ rpcauth_bindcred(struct rpc_task *task)
get_group_info(acred.group_info);
if (task->tk_flags & RPC_TASK_ROOTCREDS)
flags |= RPCAUTH_LOOKUP_ROOTCREDS;
rpc_clnt_sigmask(task->tk_client, &oldset);
ret = auth->au_ops->lookup_cred(auth, &acred, flags);
rpc_clnt_sigunmask(task->tk_client, &oldset);
if (!IS_ERR(ret))
task->tk_msg.rpc_cred = ret;
else
@ -435,6 +445,7 @@ put_rpccred(struct rpc_cred *cred)
out_destroy:
cred->cr_ops->crdestroy(cred);
}
EXPORT_SYMBOL_GPL(put_rpccred);
void
rpcauth_unbindcred(struct rpc_task *task)

13
net/sunrpc/auth_gss/auth_gss.c
View file

@ -472,16 +472,15 @@ gss_pipe_upcall(struct file *filp, struct rpc_pipe_msg *msg,
char __user *dst, size_t buflen)
{
char *data = (char *)msg->data + msg->copied;
ssize_t mlen = msg->len;
ssize_t left;
size_t mlen = min(msg->len, buflen);
unsigned long left;
if (mlen > buflen)
mlen = buflen;
left = copy_to_user(dst, data, mlen);
if (left < 0) {
msg->errno = left;
return left;
if (left == mlen) {
msg->errno = -EFAULT;
return -EFAULT;
}
mlen -= left;
msg->copied += mlen;
msg->errno = 0;

188
net/sunrpc/clnt.c
View file

@ -30,6 +30,7 @@
#include <linux/smp_lock.h>
#include <linux/utsname.h>
#include <linux/workqueue.h>
#include <linux/in6.h>
#include <linux/sunrpc/clnt.h>
#include <linux/sunrpc/rpc_pipe_fs.h>
@ -121,8 +122,9 @@ rpc_setup_pipedir(struct rpc_clnt *clnt, char *dir_name)
}
}
static struct rpc_clnt * rpc_new_client(struct rpc_xprt *xprt, char *servname, struct rpc_program *program, u32 vers, rpc_authflavor_t flavor)
static struct rpc_clnt * rpc_new_client(const struct rpc_create_args *args, struct rpc_xprt *xprt)
{
struct rpc_program *program = args->program;
struct rpc_version *version;
struct rpc_clnt *clnt = NULL;
struct rpc_auth *auth;
@ -131,13 +133,13 @@ static struct rpc_clnt * rpc_new_client(struct rpc_xprt *xprt, char *servname, s
/* sanity check the name before trying to print it */
err = -EINVAL;
len = strlen(servname);
len = strlen(args->servername);
if (len > RPC_MAXNETNAMELEN)
goto out_no_rpciod;
len++;
dprintk("RPC: creating %s client for %s (xprt %p)\n",
program->name, servname, xprt);
program->name, args->servername, xprt);
err = rpciod_up();
if (err)
@ -145,7 +147,11 @@ static struct rpc_clnt * rpc_new_client(struct rpc_xprt *xprt, char *servname, s
err = -EINVAL;
if (!xprt)
goto out_no_xprt;
if (vers >= program->nrvers || !(version = program->version[vers]))
if (args->version >= program->nrvers)
goto out_err;
version = program->version[args->version];
if (version == NULL)
goto out_err;
err = -ENOMEM;
@ -157,12 +163,12 @@ static struct rpc_clnt * rpc_new_client(struct rpc_xprt *xprt, char *servname, s
clnt->cl_server = clnt->cl_inline_name;
if (len > sizeof(clnt->cl_inline_name)) {
char *buf = kmalloc(len, GFP_KERNEL);
if (buf != 0)
if (buf != NULL)
clnt->cl_server = buf;
else
len = sizeof(clnt->cl_inline_name);
}
strlcpy(clnt->cl_server, servname, len);
strlcpy(clnt->cl_server, args->servername, len);
clnt->cl_xprt = xprt;
clnt->cl_procinfo = version->procs;
@ -182,8 +188,15 @@ static struct rpc_clnt * rpc_new_client(struct rpc_xprt *xprt, char *servname, s
if (!xprt_bound(clnt->cl_xprt))
clnt->cl_autobind = 1;
clnt->cl_timeout = xprt->timeout;
if (args->timeout != NULL) {
memcpy(&clnt->cl_timeout_default, args->timeout,
sizeof(clnt->cl_timeout_default));
clnt->cl_timeout = &clnt->cl_timeout_default;
}
clnt->cl_rtt = &clnt->cl_rtt_default;
rpc_init_rtt(&clnt->cl_rtt_default, xprt->timeout.to_initval);
rpc_init_rtt(&clnt->cl_rtt_default, clnt->cl_timeout->to_initval);
kref_init(&clnt->cl_kref);
@ -191,10 +204,10 @@ static struct rpc_clnt * rpc_new_client(struct rpc_xprt *xprt, char *servname, s
if (err < 0)
goto out_no_path;
auth = rpcauth_create(flavor, clnt);
auth = rpcauth_create(args->authflavor, clnt);
if (IS_ERR(auth)) {
printk(KERN_INFO "RPC: Couldn't create auth handle (flavor %u)\n",
flavor);
args->authflavor);
err = PTR_ERR(auth);
goto out_no_auth;
}
@ -245,9 +258,8 @@ struct rpc_clnt *rpc_create(struct rpc_create_args *args)
.srcaddr = args->saddress,
.dstaddr = args->address,
.addrlen = args->addrsize,
.timeout = args->timeout
};
char servername[20];
char servername[48];
xprt = xprt_create_transport(&xprtargs);
if (IS_ERR(xprt))
@ -258,13 +270,34 @@ struct rpc_clnt *rpc_create(struct rpc_create_args *args)
* up a string representation of the passed-in address.
*/
if (args->servername == NULL) {
struct sockaddr_in *addr =
(struct sockaddr_in *) args->address;
snprintf(servername, sizeof(servername), NIPQUAD_FMT,
NIPQUAD(addr->sin_addr.s_addr));
servername[0] = '\0';
switch (args->address->sa_family) {
case AF_INET: {
struct sockaddr_in *sin =
(struct sockaddr_in *)args->address;
snprintf(servername, sizeof(servername), NIPQUAD_FMT,
NIPQUAD(sin->sin_addr.s_addr));
break;
}
case AF_INET6: {
struct sockaddr_in6 *sin =
(struct sockaddr_in6 *)args->address;
snprintf(servername, sizeof(servername), NIP6_FMT,
NIP6(sin->sin6_addr));
break;
}
default:
/* caller wants default server name, but
* address family isn't recognized. */
return ERR_PTR(-EINVAL);
}
args->servername = servername;
}
xprt = xprt_create_transport(&xprtargs);
if (IS_ERR(xprt))
return (struct rpc_clnt *)xprt;
/*
* By default, kernel RPC client connects from a reserved port.
* CAP_NET_BIND_SERVICE will not be set for unprivileged requesters,
@ -275,8 +308,7 @@ struct rpc_clnt *rpc_create(struct rpc_create_args *args)
if (args->flags & RPC_CLNT_CREATE_NONPRIVPORT)
xprt->resvport = 0;
clnt = rpc_new_client(xprt, args->servername, args->program,
args->version, args->authflavor);
clnt = rpc_new_client(args, xprt);
if (IS_ERR(clnt))
return clnt;
@ -322,7 +354,7 @@ rpc_clone_client(struct rpc_clnt *clnt)
new->cl_autobind = 0;
INIT_LIST_HEAD(&new->cl_tasks);
spin_lock_init(&new->cl_lock);
rpc_init_rtt(&new->cl_rtt_default, clnt->cl_xprt->timeout.to_initval);
rpc_init_rtt(&new->cl_rtt_default, clnt->cl_timeout->to_initval);
new->cl_metrics = rpc_alloc_iostats(clnt);
if (new->cl_metrics == NULL)
goto out_no_stats;
@ -345,6 +377,7 @@ rpc_clone_client(struct rpc_clnt *clnt)
dprintk("RPC: %s: returned error %d\n", __FUNCTION__, err);
return ERR_PTR(err);
}
EXPORT_SYMBOL_GPL(rpc_clone_client);
/*
* Properly shut down an RPC client, terminating all outstanding
@ -363,6 +396,7 @@ void rpc_shutdown_client(struct rpc_clnt *clnt)
rpc_release_client(clnt);
}
EXPORT_SYMBOL_GPL(rpc_shutdown_client);
/*
* Free an RPC client
@ -467,6 +501,7 @@ struct rpc_clnt *rpc_bind_new_program(struct rpc_clnt *old,
out:
return clnt;
}
EXPORT_SYMBOL_GPL(rpc_bind_new_program);
/*
* Default callback for async RPC calls
@ -498,12 +533,12 @@ static void rpc_save_sigmask(sigset_t *oldset, int intr)
sigprocmask(SIG_BLOCK, &sigmask, oldset);
}
static inline void rpc_task_sigmask(struct rpc_task *task, sigset_t *oldset)
static void rpc_task_sigmask(struct rpc_task *task, sigset_t *oldset)
{
rpc_save_sigmask(oldset, !RPC_TASK_UNINTERRUPTIBLE(task));
}
static inline void rpc_restore_sigmask(sigset_t *oldset)
static void rpc_restore_sigmask(sigset_t *oldset)
{
sigprocmask(SIG_SETMASK, oldset, NULL);
}
@ -512,45 +547,49 @@ void rpc_clnt_sigmask(struct rpc_clnt *clnt, sigset_t *oldset)
{
rpc_save_sigmask(oldset, clnt->cl_intr);
}
EXPORT_SYMBOL_GPL(rpc_clnt_sigmask);
void rpc_clnt_sigunmask(struct rpc_clnt *clnt, sigset_t *oldset)
{
rpc_restore_sigmask(oldset);
}
EXPORT_SYMBOL_GPL(rpc_clnt_sigunmask);
static
struct rpc_task *rpc_do_run_task(struct rpc_clnt *clnt,
struct rpc_message *msg,
int flags,
const struct rpc_call_ops *ops,
void *data)
/**
* rpc_run_task - Allocate a new RPC task, then run rpc_execute against it
* @task_setup_data: pointer to task initialisation data
*/
struct rpc_task *rpc_run_task(const struct rpc_task_setup *task_setup_data)
{
struct rpc_task *task, *ret;
sigset_t oldset;
task = rpc_new_task(clnt, flags, ops, data);
task = rpc_new_task(task_setup_data);
if (task == NULL) {
rpc_release_calldata(ops, data);
return ERR_PTR(-ENOMEM);
rpc_release_calldata(task_setup_data->callback_ops,
task_setup_data->callback_data);
ret = ERR_PTR(-ENOMEM);
goto out;
}
/* Mask signals on synchronous RPC calls and RPCSEC_GSS upcalls */
rpc_task_sigmask(task, &oldset);
if (msg != NULL) {
rpc_call_setup(task, msg, 0);
if (task->tk_status != 0) {
ret = ERR_PTR(task->tk_status);
rpc_put_task(task);
goto out;
}
if (task->tk_status != 0) {
ret = ERR_PTR(task->tk_status);
rpc_put_task(task);
goto out;
}
atomic_inc(&task->tk_count);
rpc_execute(task);
/* Mask signals on synchronous RPC calls and RPCSEC_GSS upcalls */
if (!RPC_IS_ASYNC(task)) {
rpc_task_sigmask(task, &oldset);
rpc_execute(task);
rpc_restore_sigmask(&oldset);
} else
rpc_execute(task);
ret = task;
out:
rpc_restore_sigmask(&oldset);
return ret;
}
EXPORT_SYMBOL_GPL(rpc_run_task);
/**
* rpc_call_sync - Perform a synchronous RPC call
@ -561,17 +600,24 @@ struct rpc_task *rpc_do_run_task(struct rpc_clnt *clnt,
int rpc_call_sync(struct rpc_clnt *clnt, struct rpc_message *msg, int flags)
{
struct rpc_task *task;
struct rpc_task_setup task_setup_data = {
.rpc_client = clnt,
.rpc_message = msg,
.callback_ops = &rpc_default_ops,
.flags = flags,
};
int status;
BUG_ON(flags & RPC_TASK_ASYNC);
task = rpc_do_run_task(clnt, msg, flags, &rpc_default_ops, NULL);
task = rpc_run_task(&task_setup_data);
if (IS_ERR(task))
return PTR_ERR(task);
status = task->tk_status;
rpc_put_task(task);
return status;
}
EXPORT_SYMBOL_GPL(rpc_call_sync);
/**
* rpc_call_async - Perform an asynchronous RPC call
@ -586,45 +632,28 @@ rpc_call_async(struct rpc_clnt *clnt, struct rpc_message *msg, int flags,
const struct rpc_call_ops *tk_ops, void *data)
{
struct rpc_task *task;
struct rpc_task_setup task_setup_data = {
.rpc_client = clnt,
.rpc_message = msg,
.callback_ops = tk_ops,
.callback_data = data,
.flags = flags|RPC_TASK_ASYNC,
};
task = rpc_do_run_task(clnt, msg, flags|RPC_TASK_ASYNC, tk_ops, data);
task = rpc_run_task(&task_setup_data);
if (IS_ERR(task))
return PTR_ERR(task);
rpc_put_task(task);
return 0;
}
/**
* rpc_run_task - Allocate a new RPC task, then run rpc_execute against it
* @clnt: pointer to RPC client
* @flags: RPC flags
* @ops: RPC call ops
* @data: user call data
*/
struct rpc_task *rpc_run_task(struct rpc_clnt *clnt, int flags,
const struct rpc_call_ops *tk_ops,
void *data)
{
return rpc_do_run_task(clnt, NULL, flags, tk_ops, data);
}
EXPORT_SYMBOL(rpc_run_task);
EXPORT_SYMBOL_GPL(rpc_call_async);
void
rpc_call_setup(struct rpc_task *task, struct rpc_message *msg, int flags)
rpc_call_start(struct rpc_task *task)
{
task->tk_msg = *msg;
task->tk_flags |= flags;
/* Bind the user cred */
if (task->tk_msg.rpc_cred != NULL)
rpcauth_holdcred(task);
else
rpcauth_bindcred(task);
if (task->tk_status == 0)
task->tk_action = call_start;
else
task->tk_action = rpc_exit_task;
task->tk_action = call_start;
}
EXPORT_SYMBOL_GPL(rpc_call_start);
/**
* rpc_peeraddr - extract remote peer address from clnt's xprt
@ -653,7 +682,8 @@ EXPORT_SYMBOL_GPL(rpc_peeraddr);
* @format: address format
*
*/
char *rpc_peeraddr2str(struct rpc_clnt *clnt, enum rpc_display_format_t format)
const char *rpc_peeraddr2str(struct rpc_clnt *clnt,
enum rpc_display_format_t format)
{
struct rpc_xprt *xprt = clnt->cl_xprt;
@ -671,6 +701,7 @@ rpc_setbufsize(struct rpc_clnt *clnt, unsigned int sndsize, unsigned int rcvsize
if (xprt->ops->set_buffer_size)
xprt->ops->set_buffer_size(xprt, sndsize, rcvsize);
}
EXPORT_SYMBOL_GPL(rpc_setbufsize);
/*
* Return size of largest payload RPC client can support, in bytes
@ -710,6 +741,7 @@ rpc_restart_call(struct rpc_task *task)
task->tk_action = call_start;
}
EXPORT_SYMBOL_GPL(rpc_restart_call);
/*
* 0. Initial state
@ -1137,7 +1169,7 @@ call_status(struct rpc_task *task)
case -ETIMEDOUT:
task->tk_action = call_timeout;
if (task->tk_client->cl_discrtry)
xprt_disconnect(task->tk_xprt);
xprt_force_disconnect(task->tk_xprt);
break;
case -ECONNREFUSED:
case -ENOTCONN:
@ -1260,7 +1292,7 @@ call_decode(struct rpc_task *task)
req->rq_received = req->rq_private_buf.len = 0;
task->tk_status = 0;
if (task->tk_client->cl_discrtry)
xprt_disconnect(task->tk_xprt);
xprt_force_disconnect(task->tk_xprt);
}
/*
@ -1517,9 +1549,15 @@ struct rpc_task *rpc_call_null(struct rpc_clnt *clnt, struct rpc_cred *cred, int
.rpc_proc = &rpcproc_null,
.rpc_cred = cred,
};
return rpc_do_run_task(clnt, &msg, flags, &rpc_default_ops, NULL);
struct rpc_task_setup task_setup_data = {
.rpc_client = clnt,
.rpc_message = &msg,
.callback_ops = &rpc_default_ops,
.flags = flags,
};
return rpc_run_task(&task_setup_data);
}
EXPORT_SYMBOL(rpc_call_null);
EXPORT_SYMBOL_GPL(rpc_call_null);
#ifdef RPC_DEBUG
void rpc_show_tasks(void)

59
net/sunrpc/rpc_pipe.c
View file

@ -76,6 +76,16 @@ rpc_timeout_upcall_queue(struct work_struct *work)
rpc_purge_list(rpci, &free_list, destroy_msg, -ETIMEDOUT);
}
/**
* rpc_queue_upcall
* @inode: inode of upcall pipe on which to queue given message
* @msg: message to queue
*
* Call with an @inode created by rpc_mkpipe() to queue an upcall.
* A userspace process may then later read the upcall by performing a
* read on an open file for this inode. It is up to the caller to
* initialize the fields of @msg (other than @msg->list) appropriately.
*/
int
rpc_queue_upcall(struct inode *inode, struct rpc_pipe_msg *msg)
{
@ -103,6 +113,7 @@ rpc_queue_upcall(struct inode *inode, struct rpc_pipe_msg *msg)
wake_up(&rpci->waitq);
return res;
}
EXPORT_SYMBOL(rpc_queue_upcall);
static inline void
rpc_inode_setowner(struct inode *inode, void *private)
@ -512,8 +523,8 @@ rpc_get_inode(struct super_block *sb, int mode)
/*
* FIXME: This probably has races.
*/
static void
rpc_depopulate(struct dentry *parent, int start, int eof)
static void rpc_depopulate(struct dentry *parent,
unsigned long start, unsigned long eof)
{
struct inode *dir = parent->d_inode;
struct list_head *pos, *next;
@ -663,7 +674,16 @@ rpc_lookup_negative(char *path, struct nameidata *nd)
return dentry;
}
/**
* rpc_mkdir - Create a new directory in rpc_pipefs
* @path: path from the rpc_pipefs root to the new directory
* @rpc_clnt: rpc client to associate with this directory
*
* This creates a directory at the given @path associated with
* @rpc_clnt, which will contain a file named "info" with some basic
* information about the client, together with any "pipes" that may
* later be created using rpc_mkpipe().
*/
struct dentry *
rpc_mkdir(char *path, struct rpc_clnt *rpc_client)
{
@ -699,6 +719,10 @@ rpc_mkdir(char *path, struct rpc_clnt *rpc_client)
goto out;
}
/**
* rpc_rmdir - Remove a directory created with rpc_mkdir()
* @dentry: directory to remove
*/
int
rpc_rmdir(struct dentry *dentry)
{
@ -717,6 +741,25 @@ rpc_rmdir(struct dentry *dentry)
return error;
}
/**
* rpc_mkpipe - make an rpc_pipefs file for kernel<->userspace communication
* @parent: dentry of directory to create new "pipe" in
* @name: name of pipe
* @private: private data to associate with the pipe, for the caller's use
* @ops: operations defining the behavior of the pipe: upcall, downcall,
* release_pipe, and destroy_msg.
*
* Data is made available for userspace to read by calls to
* rpc_queue_upcall(). The actual reads will result in calls to
* @ops->upcall, which will be called with the file pointer,
* message, and userspace buffer to copy to.
*
* Writes can come at any time, and do not necessarily have to be
* responses to upcalls. They will result in calls to @msg->downcall.
*
* The @private argument passed here will be available to all these methods
* from the file pointer, via RPC_I(file->f_dentry->d_inode)->private.
*/
struct dentry *
rpc_mkpipe(struct dentry *parent, const char *name, void *private, struct rpc_pipe_ops *ops, int flags)
{
@ -763,7 +806,16 @@ rpc_mkpipe(struct dentry *parent, const char *name, void *private, struct rpc_pi
-ENOMEM);
goto out;
}
EXPORT_SYMBOL(rpc_mkpipe);
/**
* rpc_unlink - remove a pipe
* @dentry: dentry for the pipe, as returned from rpc_mkpipe
*
* After this call, lookups will no longer find the pipe, and any
* attempts to read or write using preexisting opens of the pipe will
* return -EPIPE.
*/
int
rpc_unlink(struct dentry *dentry)
{
@ -785,6 +837,7 @@ rpc_unlink(struct dentry *dentry)
dput(parent);
return error;
}
EXPORT_SYMBOL(rpc_unlink);
/*
* populate the filesystem

119
net/sunrpc/rpcb_clnt.c
View file

@ -54,45 +54,6 @@ enum {
#define RPCB_HIGHPROC_3 RPCBPROC_TADDR2UADDR
#define RPCB_HIGHPROC_4 RPCBPROC_GETSTAT
/*
* r_addr
*
* Quoting RFC 3530, section 2.2:
*
* For TCP over IPv4 and for UDP over IPv4, the format of r_addr is the
* US-ASCII string:
*
* h1.h2.h3.h4.p1.p2
*
* The prefix, "h1.h2.h3.h4", is the standard textual form for
* representing an IPv4 address, which is always four octets long.
* Assuming big-endian ordering, h1, h2, h3, and h4, are respectively,
* the first through fourth octets each converted to ASCII-decimal.
* Assuming big-endian ordering, p1 and p2 are, respectively, the first
* and second octets each converted to ASCII-decimal. For example, if a
* host, in big-endian order, has an address of 0x0A010307 and there is
* a service listening on, in big endian order, port 0x020F (decimal
* 527), then the complete universal address is "10.1.3.7.2.15".
*
* ...
*
* For TCP over IPv6 and for UDP over IPv6, the format of r_addr is the
* US-ASCII string:
*
* x1:x2:x3:x4:x5:x6:x7:x8.p1.p2
*
* The suffix "p1.p2" is the service port, and is computed the same way
* as with universal addresses for TCP and UDP over IPv4. The prefix,
* "x1:x2:x3:x4:x5:x6:x7:x8", is the standard textual form for
* representing an IPv6 address as defined in Section 2.2 of [RFC2373].
* Additionally, the two alternative forms specified in Section 2.2 of
* [RFC2373] are also acceptable.
*
* XXX: Currently this implementation does not explicitly convert the
* stored address to US-ASCII on non-ASCII systems.
*/
#define RPCB_MAXADDRLEN (128u)
/*
* r_owner
*
@ -112,9 +73,9 @@ struct rpcbind_args {
u32 r_vers;
u32 r_prot;
unsigned short r_port;
char * r_netid;
char r_addr[RPCB_MAXADDRLEN];
char * r_owner;
const char * r_netid;
const char * r_addr;
const char * r_owner;
};
static struct rpc_procinfo rpcb_procedures2[];
@ -128,19 +89,6 @@ struct rpcb_info {
static struct rpcb_info rpcb_next_version[];
static struct rpcb_info rpcb_next_version6[];
static void rpcb_getport_prepare(struct rpc_task *task, void *calldata)
{
struct rpcbind_args *map = calldata;
struct rpc_xprt *xprt = map->r_xprt;
struct rpc_message msg = {
.rpc_proc = rpcb_next_version[xprt->bind_index].rpc_proc,
.rpc_argp = map,
.rpc_resp = &map->r_port,
};
rpc_call_setup(task, &msg, 0);
}
static void rpcb_map_release(void *data)
{
struct rpcbind_args *map = data;
@ -150,7 +98,6 @@ static void rpcb_map_release(void *data)
}
static const struct rpc_call_ops rpcb_getport_ops = {
.rpc_call_prepare = rpcb_getport_prepare,
.rpc_call_done = rpcb_getport_done,
.rpc_release = rpcb_map_release,
};
@ -162,12 +109,13 @@ static void rpcb_wake_rpcbind_waiters(struct rpc_xprt *xprt, int status)
}
static struct rpc_clnt *rpcb_create(char *hostname, struct sockaddr *srvaddr,
int proto, int version, int privileged)
size_t salen, int proto, u32 version,
int privileged)
{
struct rpc_create_args args = {
.protocol = proto,
.address = srvaddr,
.addrsize = sizeof(struct sockaddr_in),
.addrsize = salen,
.servername = hostname,
.program = &rpcb_program,
.version = version,
@ -230,7 +178,7 @@ int rpcb_register(u32 prog, u32 vers, int prot, unsigned short port, int *okay)
prog, vers, prot, port);
rpcb_clnt = rpcb_create("localhost", (struct sockaddr *) &sin,
XPRT_TRANSPORT_UDP, 2, 1);
sizeof(sin), XPRT_TRANSPORT_UDP, 2, 1);
if (IS_ERR(rpcb_clnt))
return PTR_ERR(rpcb_clnt);
@ -252,13 +200,15 @@ int rpcb_register(u32 prog, u32 vers, int prot, unsigned short port, int *okay)
* @vers: RPC version number to bind
* @prot: transport protocol to use to make this request
*
* Return value is the requested advertised port number,
* or a negative errno value.
*
* Called from outside the RPC client in a synchronous task context.
* Uses default timeout parameters specified by underlying transport.
*
* XXX: Needs to support IPv6, and rpcbind versions 3 and 4
* XXX: Needs to support IPv6
*/
int rpcb_getport_sync(struct sockaddr_in *sin, __u32 prog,
__u32 vers, int prot)
int rpcb_getport_sync(struct sockaddr_in *sin, u32 prog, u32 vers, int prot)
{
struct rpcbind_args map = {
.r_prog = prog,
@ -272,14 +222,13 @@ int rpcb_getport_sync(struct sockaddr_in *sin, __u32 prog,
.rpc_resp = &map.r_port,
};
struct rpc_clnt *rpcb_clnt;
char hostname[40];
int status;
dprintk("RPC: %s(" NIPQUAD_FMT ", %u, %u, %d)\n",
__FUNCTION__, NIPQUAD(sin->sin_addr.s_addr), prog, vers, prot);
sprintf(hostname, NIPQUAD_FMT, NIPQUAD(sin->sin_addr.s_addr));
rpcb_clnt = rpcb_create(hostname, (struct sockaddr *)sin, prot, 2, 0);
rpcb_clnt = rpcb_create(NULL, (struct sockaddr *)sin,
sizeof(*sin), prot, 2, 0);
if (IS_ERR(rpcb_clnt))
return PTR_ERR(rpcb_clnt);
@ -295,6 +244,24 @@ int rpcb_getport_sync(struct sockaddr_in *sin, __u32 prog,
}
EXPORT_SYMBOL_GPL(rpcb_getport_sync);
static struct rpc_task *rpcb_call_async(struct rpc_clnt *rpcb_clnt, struct rpcbind_args *map, int version)
{
struct rpc_message msg = {
.rpc_proc = rpcb_next_version[version].rpc_proc,
.rpc_argp = map,
.rpc_resp = &map->r_port,
};
struct rpc_task_setup task_setup_data = {
.rpc_client = rpcb_clnt,
.rpc_message = &msg,
.callback_ops = &rpcb_getport_ops,
.callback_data = map,
.flags = RPC_TASK_ASYNC,
};
return rpc_run_task(&task_setup_data);
}
/**
* rpcb_getport_async - obtain the port for a given RPC service on a given host
* @task: task that is waiting for portmapper request
@ -305,12 +272,14 @@ EXPORT_SYMBOL_GPL(rpcb_getport_sync);
void rpcb_getport_async(struct rpc_task *task)
{
struct rpc_clnt *clnt = task->tk_client;
int bind_version;
u32 bind_version;
struct rpc_xprt *xprt = task->tk_xprt;
struct rpc_clnt *rpcb_clnt;
static struct rpcbind_args *map;
struct rpc_task *child;
struct sockaddr addr;
struct sockaddr_storage addr;
struct sockaddr *sap = (struct sockaddr *)&addr;
size_t salen;
int status;
struct rpcb_info *info;
@ -340,10 +309,10 @@ void rpcb_getport_async(struct rpc_task *task)
goto bailout_nofree;
}
rpc_peeraddr(clnt, (void *)&addr, sizeof(addr));
salen = rpc_peeraddr(clnt, sap, sizeof(addr));
/* Don't ever use rpcbind v2 for AF_INET6 requests */
switch (addr.sa_family) {
switch (sap->sa_family) {
case AF_INET:
info = rpcb_next_version;
break;
@ -368,7 +337,7 @@ void rpcb_getport_async(struct rpc_task *task)
dprintk("RPC: %5u %s: trying rpcbind version %u\n",
task->tk_pid, __FUNCTION__, bind_version);
rpcb_clnt = rpcb_create(clnt->cl_server, &addr, xprt->prot,
rpcb_clnt = rpcb_create(clnt->cl_server, sap, salen, xprt->prot,
bind_version, 0);
if (IS_ERR(rpcb_clnt)) {
status = PTR_ERR(rpcb_clnt);
@ -390,12 +359,10 @@ void rpcb_getport_async(struct rpc_task *task)
map->r_port = 0;
map->r_xprt = xprt_get(xprt);
map->r_netid = rpc_peeraddr2str(clnt, RPC_DISPLAY_NETID);
memcpy(map->r_addr,
rpc_peeraddr2str(rpcb_clnt, RPC_DISPLAY_UNIVERSAL_ADDR),
sizeof(map->r_addr));
map->r_addr = rpc_peeraddr2str(rpcb_clnt, RPC_DISPLAY_UNIVERSAL_ADDR);
map->r_owner = RPCB_OWNER_STRING; /* ignored for GETADDR */
child = rpc_run_task(rpcb_clnt, RPC_TASK_ASYNC, &rpcb_getport_ops, map);
child = rpcb_call_async(rpcb_clnt, map, xprt->bind_index);
rpc_release_client(rpcb_clnt);
if (IS_ERR(child)) {
status = -EIO;
@ -518,7 +485,7 @@ static int rpcb_decode_getaddr(struct rpc_rqst *req, __be32 *p,
* Simple sanity check. The smallest possible universal
* address is an IPv4 address string containing 11 bytes.
*/
if (addr_len < 11 || addr_len > RPCB_MAXADDRLEN)
if (addr_len < 11 || addr_len > RPCBIND_MAXUADDRLEN)
goto out_err;
/*
@ -569,7 +536,7 @@ static int rpcb_decode_getaddr(struct rpc_rqst *req, __be32 *p,
#define RPCB_boolean_sz (1u)
#define RPCB_netid_sz (1+XDR_QUADLEN(RPCBIND_MAXNETIDLEN))
#define RPCB_addr_sz (1+XDR_QUADLEN(RPCB_MAXADDRLEN))
#define RPCB_addr_sz (1+XDR_QUADLEN(RPCBIND_MAXUADDRLEN))
#define RPCB_ownerstring_sz (1+XDR_QUADLEN(RPCB_MAXOWNERLEN))
#define RPCB_mappingargs_sz RPCB_program_sz+RPCB_version_sz+ \

104
net/sunrpc/sched.c
View file

@ -45,7 +45,7 @@ static void rpc_release_task(struct rpc_task *task);
/*
* RPC tasks sit here while waiting for conditions to improve.
*/
static RPC_WAITQ(delay_queue, "delayq");
static struct rpc_wait_queue delay_queue;
/*
* rpciod-related stuff
@ -135,7 +135,7 @@ static void __rpc_add_wait_queue_priority(struct rpc_wait_queue *queue, struct r
if (unlikely(task->tk_priority > queue->maxpriority))
q = &queue->tasks[queue->maxpriority];
list_for_each_entry(t, q, u.tk_wait.list) {
if (t->tk_cookie == task->tk_cookie) {
if (t->tk_owner == task->tk_owner) {
list_add_tail(&task->u.tk_wait.list, &t->u.tk_wait.links);
return;
}
@ -208,26 +208,26 @@ static inline void rpc_set_waitqueue_priority(struct rpc_wait_queue *queue, int
queue->count = 1 << (priority * 2);
}
static inline void rpc_set_waitqueue_cookie(struct rpc_wait_queue *queue, unsigned long cookie)
static inline void rpc_set_waitqueue_owner(struct rpc_wait_queue *queue, pid_t pid)
{
queue->cookie = cookie;
queue->owner = pid;
queue->nr = RPC_BATCH_COUNT;
}
static inline void rpc_reset_waitqueue_priority(struct rpc_wait_queue *queue)
{
rpc_set_waitqueue_priority(queue, queue->maxpriority);
rpc_set_waitqueue_cookie(queue, 0);
rpc_set_waitqueue_owner(queue, 0);
}
static void __rpc_init_priority_wait_queue(struct rpc_wait_queue *queue, const char *qname, int maxprio)
static void __rpc_init_priority_wait_queue(struct rpc_wait_queue *queue, const char *qname, unsigned char nr_queues)
{
int i;
spin_lock_init(&queue->lock);
for (i = 0; i < ARRAY_SIZE(queue->tasks); i++)
INIT_LIST_HEAD(&queue->tasks[i]);
queue->maxpriority = maxprio;
queue->maxpriority = nr_queues - 1;
rpc_reset_waitqueue_priority(queue);
#ifdef RPC_DEBUG
queue->name = qname;
@ -236,14 +236,14 @@ static void __rpc_init_priority_wait_queue(struct rpc_wait_queue *queue, const c
void rpc_init_priority_wait_queue(struct rpc_wait_queue *queue, const char *qname)
{
__rpc_init_priority_wait_queue(queue, qname, RPC_PRIORITY_HIGH);
__rpc_init_priority_wait_queue(queue, qname, RPC_NR_PRIORITY);
}
void rpc_init_wait_queue(struct rpc_wait_queue *queue, const char *qname)
{
__rpc_init_priority_wait_queue(queue, qname, 0);
__rpc_init_priority_wait_queue(queue, qname, 1);
}
EXPORT_SYMBOL(rpc_init_wait_queue);
EXPORT_SYMBOL_GPL(rpc_init_wait_queue);
static int rpc_wait_bit_interruptible(void *word)
{
@ -303,7 +303,7 @@ int __rpc_wait_for_completion_task(struct rpc_task *task, int (*action)(void *))
return wait_on_bit(&task->tk_runstate, RPC_TASK_ACTIVE,
action, TASK_INTERRUPTIBLE);
}
EXPORT_SYMBOL(__rpc_wait_for_completion_task);
EXPORT_SYMBOL_GPL(__rpc_wait_for_completion_task);
/*
* Make an RPC task runnable.
@ -373,6 +373,7 @@ void rpc_sleep_on(struct rpc_wait_queue *q, struct rpc_task *task,
__rpc_sleep_on(q, task, action, timer);
spin_unlock_bh(&q->lock);
}
EXPORT_SYMBOL_GPL(rpc_sleep_on);
/**
* __rpc_do_wake_up_task - wake up a single rpc_task
@ -444,6 +445,7 @@ void rpc_wake_up_task(struct rpc_task *task)
}
rcu_read_unlock_bh();
}
EXPORT_SYMBOL_GPL(rpc_wake_up_task);
/*
* Wake up the next task on a priority queue.
@ -454,12 +456,12 @@ static struct rpc_task * __rpc_wake_up_next_priority(struct rpc_wait_queue *queu
struct rpc_task *task;
/*
* Service a batch of tasks from a single cookie.
* Service a batch of tasks from a single owner.
*/
q = &queue->tasks[queue->priority];
if (!list_empty(q)) {
task = list_entry(q->next, struct rpc_task, u.tk_wait.list);
if (queue->cookie == task->tk_cookie) {
if (queue->owner == task->tk_owner) {
if (--queue->nr)
goto out;
list_move_tail(&task->u.tk_wait.list, q);
@ -468,7 +470,7 @@ static struct rpc_task * __rpc_wake_up_next_priority(struct rpc_wait_queue *queu
* Check if we need to switch queues.
*/
if (--queue->count)
goto new_cookie;
goto new_owner;
}
/*
@ -490,8 +492,8 @@ static struct rpc_task * __rpc_wake_up_next_priority(struct rpc_wait_queue *queu
new_queue:
rpc_set_waitqueue_priority(queue, (unsigned int)(q - &queue->tasks[0]));
new_cookie:
rpc_set_waitqueue_cookie(queue, task->tk_cookie);
new_owner:
rpc_set_waitqueue_owner(queue, task->tk_owner);
out:
__rpc_wake_up_task(task);
return task;
@ -519,6 +521,7 @@ struct rpc_task * rpc_wake_up_next(struct rpc_wait_queue *queue)
return task;
}
EXPORT_SYMBOL_GPL(rpc_wake_up_next);
/**
* rpc_wake_up - wake up all rpc_tasks
@ -544,6 +547,7 @@ void rpc_wake_up(struct rpc_wait_queue *queue)
spin_unlock(&queue->lock);
rcu_read_unlock_bh();
}
EXPORT_SYMBOL_GPL(rpc_wake_up);
/**
* rpc_wake_up_status - wake up all rpc_tasks and set their status value.
@ -572,6 +576,7 @@ void rpc_wake_up_status(struct rpc_wait_queue *queue, int status)
spin_unlock(&queue->lock);
rcu_read_unlock_bh();
}
EXPORT_SYMBOL_GPL(rpc_wake_up_status);
static void __rpc_atrun(struct rpc_task *task)
{
@ -586,6 +591,7 @@ void rpc_delay(struct rpc_task *task, unsigned long delay)
task->tk_timeout = delay;
rpc_sleep_on(&delay_queue, task, NULL, __rpc_atrun);
}
EXPORT_SYMBOL_GPL(rpc_delay);
/*
* Helper to call task->tk_ops->rpc_call_prepare
@ -614,7 +620,7 @@ void rpc_exit_task(struct rpc_task *task)
}
}
}
EXPORT_SYMBOL(rpc_exit_task);
EXPORT_SYMBOL_GPL(rpc_exit_task);
void rpc_release_calldata(const struct rpc_call_ops *ops, void *calldata)
{
@ -808,39 +814,49 @@ EXPORT_SYMBOL_GPL(rpc_free);
/*
* Creation and deletion of RPC task structures
*/
void rpc_init_task(struct rpc_task *task, struct rpc_clnt *clnt, int flags, const struct rpc_call_ops *tk_ops, void *calldata)
static void rpc_init_task(struct rpc_task *task, const struct rpc_task_setup *task_setup_data)
{
memset(task, 0, sizeof(*task));
setup_timer(&task->tk_timer, (void (*)(unsigned long))rpc_run_timer,
(unsigned long)task);
atomic_set(&task->tk_count, 1);
task->tk_client = clnt;
task->tk_flags = flags;
task->tk_ops = tk_ops;
if (tk_ops->rpc_call_prepare != NULL)
task->tk_action = rpc_prepare_task;
task->tk_calldata = calldata;
task->tk_flags = task_setup_data->flags;
task->tk_ops = task_setup_data->callback_ops;
task->tk_calldata = task_setup_data->callback_data;
INIT_LIST_HEAD(&task->tk_task);
/* Initialize retry counters */
task->tk_garb_retry = 2;
task->tk_cred_retry = 2;
task->tk_priority = RPC_PRIORITY_NORMAL;
task->tk_cookie = (unsigned long)current;
task->tk_priority = task_setup_data->priority - RPC_PRIORITY_LOW;
task->tk_owner = current->tgid;
/* Initialize workqueue for async tasks */
task->tk_workqueue = rpciod_workqueue;
if (clnt) {
kref_get(&clnt->cl_kref);
if (clnt->cl_softrtry)
task->tk_client = task_setup_data->rpc_client;
if (task->tk_client != NULL) {
kref_get(&task->tk_client->cl_kref);
if (task->tk_client->cl_softrtry)
task->tk_flags |= RPC_TASK_SOFT;
if (!clnt->cl_intr)
if (!task->tk_client->cl_intr)
task->tk_flags |= RPC_TASK_NOINTR;
}
BUG_ON(task->tk_ops == NULL);
if (task->tk_ops->rpc_call_prepare != NULL)
task->tk_action = rpc_prepare_task;
if (task_setup_data->rpc_message != NULL) {
memcpy(&task->tk_msg, task_setup_data->rpc_message, sizeof(task->tk_msg));
/* Bind the user cred */
if (task->tk_msg.rpc_cred != NULL)
rpcauth_holdcred(task);
else
rpcauth_bindcred(task);
if (task->tk_action == NULL)
rpc_call_start(task);
}
/* starting timestamp */
task->tk_start = jiffies;
@ -865,18 +881,22 @@ static void rpc_free_task(struct rcu_head *rcu)
/*
* Create a new task for the specified client.
*/
struct rpc_task *rpc_new_task(struct rpc_clnt *clnt, int flags, const struct rpc_call_ops *tk_ops, void *calldata)
struct rpc_task *rpc_new_task(const struct rpc_task_setup *setup_data)
{
struct rpc_task *task;
struct rpc_task *task = setup_data->task;
unsigned short flags = 0;
task = rpc_alloc_task();
if (!task)
goto out;
if (task == NULL) {
task = rpc_alloc_task();
if (task == NULL)
goto out;
flags = RPC_TASK_DYNAMIC;
}
rpc_init_task(task, clnt, flags, tk_ops, calldata);
rpc_init_task(task, setup_data);
task->tk_flags |= flags;
dprintk("RPC: allocated task %p\n", task);
task->tk_flags |= RPC_TASK_DYNAMIC;
out:
return task;
}
@ -902,7 +922,7 @@ void rpc_put_task(struct rpc_task *task)
call_rcu_bh(&task->u.tk_rcu, rpc_free_task);
rpc_release_calldata(tk_ops, calldata);
}
EXPORT_SYMBOL(rpc_put_task);
EXPORT_SYMBOL_GPL(rpc_put_task);
static void rpc_release_task(struct rpc_task *task)
{
@ -959,6 +979,7 @@ void rpc_killall_tasks(struct rpc_clnt *clnt)
}
spin_unlock(&clnt->cl_lock);
}
EXPORT_SYMBOL_GPL(rpc_killall_tasks);
int rpciod_up(void)
{
@ -1038,6 +1059,11 @@ rpc_init_mempool(void)
goto err_nomem;
if (!rpciod_start())
goto err_nomem;
/*
* The following is not strictly a mempool initialisation,
* but there is no harm in doing it here
*/
rpc_init_wait_queue(&delay_queue, "delayq");
return 0;
err_nomem:
rpc_destroy_mempool();

2
net/sunrpc/socklib.c
View file

@ -72,7 +72,7 @@ ssize_t xdr_partial_copy_from_skb(struct xdr_buf *xdr, unsigned int base, struct
struct page **ppage = xdr->pages;
unsigned int len, pglen = xdr->page_len;
ssize_t copied = 0;
int ret;
size_t ret;
len = xdr->head[0].iov_len;
if (base < len) {

8
net/sunrpc/stats.c
View file

@ -118,7 +118,7 @@ struct rpc_iostats *rpc_alloc_iostats(struct rpc_clnt *clnt)
new = kcalloc(clnt->cl_maxproc, sizeof(struct rpc_iostats), GFP_KERNEL);
return new;
}
EXPORT_SYMBOL(rpc_alloc_iostats);
EXPORT_SYMBOL_GPL(rpc_alloc_iostats);
/**
* rpc_free_iostats - release an rpc_iostats structure
@ -129,7 +129,7 @@ void rpc_free_iostats(struct rpc_iostats *stats)
{
kfree(stats);
}
EXPORT_SYMBOL(rpc_free_iostats);
EXPORT_SYMBOL_GPL(rpc_free_iostats);
/**
* rpc_count_iostats - tally up per-task stats
@ -215,7 +215,7 @@ void rpc_print_iostats(struct seq_file *seq, struct rpc_clnt *clnt)
metrics->om_execute * MILLISECS_PER_JIFFY);
}
}
EXPORT_SYMBOL(rpc_print_iostats);
EXPORT_SYMBOL_GPL(rpc_print_iostats);
/*
* Register/unregister RPC proc files
@ -241,12 +241,14 @@ rpc_proc_register(struct rpc_stat *statp)
{
return do_register(statp->program->name, statp, &rpc_proc_fops);
}
EXPORT_SYMBOL_GPL(rpc_proc_register);
void
rpc_proc_unregister(const char *name)
{
remove_proc_entry(name, proc_net_rpc);
}
EXPORT_SYMBOL_GPL(rpc_proc_unregister);
struct proc_dir_entry *
svc_proc_register(struct svc_stat *statp, const struct file_operations *fops)

66
net/sunrpc/sunrpc_syms.c
View file

@ -22,45 +22,6 @@
#include <linux/sunrpc/rpc_pipe_fs.h>
#include <linux/sunrpc/xprtsock.h>
/* RPC scheduler */
EXPORT_SYMBOL(rpc_execute);
EXPORT_SYMBOL(rpc_init_task);
EXPORT_SYMBOL(rpc_sleep_on);
EXPORT_SYMBOL(rpc_wake_up_next);
EXPORT_SYMBOL(rpc_wake_up_task);
EXPORT_SYMBOL(rpc_wake_up_status);
/* RPC client functions */
EXPORT_SYMBOL(rpc_clone_client);
EXPORT_SYMBOL(rpc_bind_new_program);
EXPORT_SYMBOL(rpc_shutdown_client);
EXPORT_SYMBOL(rpc_killall_tasks);
EXPORT_SYMBOL(rpc_call_sync);
EXPORT_SYMBOL(rpc_call_async);
EXPORT_SYMBOL(rpc_call_setup);
EXPORT_SYMBOL(rpc_clnt_sigmask);
EXPORT_SYMBOL(rpc_clnt_sigunmask);
EXPORT_SYMBOL(rpc_delay);
EXPORT_SYMBOL(rpc_restart_call);
EXPORT_SYMBOL(rpc_setbufsize);
EXPORT_SYMBOL(rpc_unlink);
EXPORT_SYMBOL(rpc_wake_up);
EXPORT_SYMBOL(rpc_queue_upcall);
EXPORT_SYMBOL(rpc_mkpipe);
/* Client transport */
EXPORT_SYMBOL(xprt_set_timeout);
/* Client credential cache */
EXPORT_SYMBOL(rpcauth_register);
EXPORT_SYMBOL(rpcauth_unregister);
EXPORT_SYMBOL(rpcauth_create);
EXPORT_SYMBOL(rpcauth_lookupcred);
EXPORT_SYMBOL(rpcauth_lookup_credcache);
EXPORT_SYMBOL(rpcauth_destroy_credcache);
EXPORT_SYMBOL(rpcauth_init_credcache);
EXPORT_SYMBOL(put_rpccred);
/* RPC server stuff */
EXPORT_SYMBOL(svc_create);
EXPORT_SYMBOL(svc_create_thread);
@ -81,8 +42,6 @@ EXPORT_SYMBOL(svc_set_client);
/* RPC statistics */
#ifdef CONFIG_PROC_FS
EXPORT_SYMBOL(rpc_proc_register);
EXPORT_SYMBOL(rpc_proc_unregister);
EXPORT_SYMBOL(svc_proc_register);
EXPORT_SYMBOL(svc_proc_unregister);
EXPORT_SYMBOL(svc_seq_show);
@ -105,31 +64,6 @@ EXPORT_SYMBOL(qword_get);
EXPORT_SYMBOL(svcauth_unix_purge);
EXPORT_SYMBOL(unix_domain_find);
/* Generic XDR */
EXPORT_SYMBOL(xdr_encode_string);
EXPORT_SYMBOL(xdr_decode_string_inplace);
EXPORT_SYMBOL(xdr_decode_netobj);
EXPORT_SYMBOL(xdr_encode_netobj);
EXPORT_SYMBOL(xdr_encode_pages);
EXPORT_SYMBOL(xdr_inline_pages);
EXPORT_SYMBOL(xdr_shift_buf);
EXPORT_SYMBOL(xdr_encode_word);
EXPORT_SYMBOL(xdr_decode_word);
EXPORT_SYMBOL(xdr_encode_array2);
EXPORT_SYMBOL(xdr_decode_array2);
EXPORT_SYMBOL(xdr_buf_from_iov);
EXPORT_SYMBOL(xdr_buf_subsegment);
EXPORT_SYMBOL(xdr_buf_read_netobj);
EXPORT_SYMBOL(read_bytes_from_xdr_buf);
/* Debugging symbols */
#ifdef RPC_DEBUG
EXPORT_SYMBOL(rpc_debug);
EXPORT_SYMBOL(nfs_debug);
EXPORT_SYMBOL(nfsd_debug);
EXPORT_SYMBOL(nlm_debug);
#endif
extern struct cache_detail ip_map_cache, unix_gid_cache;
static int __init

7
net/sunrpc/sysctl.c
View file

@ -23,9 +23,16 @@
* Declare the debug flags here
*/
unsigned int rpc_debug;
EXPORT_SYMBOL_GPL(rpc_debug);
unsigned int nfs_debug;
EXPORT_SYMBOL_GPL(nfs_debug);
unsigned int nfsd_debug;
EXPORT_SYMBOL_GPL(nfsd_debug);
unsigned int nlm_debug;
EXPORT_SYMBOL_GPL(nlm_debug);
#ifdef RPC_DEBUG

16
net/sunrpc/xdr.c
View file

@ -28,6 +28,7 @@ xdr_encode_netobj(__be32 *p, const struct xdr_netobj *obj)
memcpy(p, obj->data, obj->len);
return p + XDR_QUADLEN(obj->len);
}
EXPORT_SYMBOL(xdr_encode_netobj);
__be32 *
xdr_decode_netobj(__be32 *p, struct xdr_netobj *obj)
@ -40,6 +41,7 @@ xdr_decode_netobj(__be32 *p, struct xdr_netobj *obj)
obj->data = (u8 *) p;
return p + XDR_QUADLEN(len);
}
EXPORT_SYMBOL(xdr_decode_netobj);
/**
* xdr_encode_opaque_fixed - Encode fixed length opaque data
@ -91,6 +93,7 @@ xdr_encode_string(__be32 *p, const char *string)
{
return xdr_encode_array(p, string, strlen(string));
}
EXPORT_SYMBOL(xdr_encode_string);
__be32 *
xdr_decode_string_inplace(__be32 *p, char **sp, int *lenp, int maxlen)
@ -103,6 +106,7 @@ xdr_decode_string_inplace(__be32 *p, char **sp, int *lenp, int maxlen)
*sp = (char *) p;
return p + XDR_QUADLEN(len);
}
EXPORT_SYMBOL(xdr_decode_string_inplace);
void
xdr_encode_pages(struct xdr_buf *xdr, struct page **pages, unsigned int base,
@ -130,6 +134,7 @@ xdr_encode_pages(struct xdr_buf *xdr, struct page **pages, unsigned int base,
xdr->buflen += len;
xdr->len += len;
}
EXPORT_SYMBOL(xdr_encode_pages);
void
xdr_inline_pages(struct xdr_buf *xdr, unsigned int offset,
@ -151,7 +156,7 @@ xdr_inline_pages(struct xdr_buf *xdr, unsigned int offset,
xdr->buflen += len;
}
EXPORT_SYMBOL(xdr_inline_pages);
/*
* Helper routines for doing 'memmove' like operations on a struct xdr_buf
@ -418,6 +423,7 @@ xdr_shift_buf(struct xdr_buf *buf, size_t len)
{
xdr_shrink_bufhead(buf, len);
}
EXPORT_SYMBOL(xdr_shift_buf);
/**
* xdr_init_encode - Initialize a struct xdr_stream for sending data.
@ -639,6 +645,7 @@ xdr_buf_from_iov(struct kvec *iov, struct xdr_buf *buf)
buf->page_len = 0;
buf->buflen = buf->len = iov->iov_len;
}
EXPORT_SYMBOL(xdr_buf_from_iov);
/* Sets subbuf to the portion of buf of length len beginning base bytes
* from the start of buf. Returns -1 if base of length are out of bounds. */
@ -687,6 +694,7 @@ xdr_buf_subsegment(struct xdr_buf *buf, struct xdr_buf *subbuf,
return -1;
return 0;
}
EXPORT_SYMBOL(xdr_buf_subsegment);
static void __read_bytes_from_xdr_buf(struct xdr_buf *subbuf, void *obj, unsigned int len)
{
@ -717,6 +725,7 @@ int read_bytes_from_xdr_buf(struct xdr_buf *buf, unsigned int base, void *obj, u
__read_bytes_from_xdr_buf(&subbuf, obj, len);
return 0;
}
EXPORT_SYMBOL(read_bytes_from_xdr_buf);
static void __write_bytes_to_xdr_buf(struct xdr_buf *subbuf, void *obj, unsigned int len)
{
@ -760,6 +769,7 @@ xdr_decode_word(struct xdr_buf *buf, unsigned int base, u32 *obj)
*obj = ntohl(raw);
return 0;
}
EXPORT_SYMBOL(xdr_decode_word);
int
xdr_encode_word(struct xdr_buf *buf, unsigned int base, u32 obj)
@ -768,6 +778,7 @@ xdr_encode_word(struct xdr_buf *buf, unsigned int base, u32 obj)
return write_bytes_to_xdr_buf(buf, base, &raw, sizeof(obj));
}
EXPORT_SYMBOL(xdr_encode_word);
/* If the netobj starting offset bytes from the start of xdr_buf is contained
* entirely in the head or the tail, set object to point to it; otherwise
@ -805,6 +816,7 @@ int xdr_buf_read_netobj(struct xdr_buf *buf, struct xdr_netobj *obj, unsigned in
__read_bytes_from_xdr_buf(&subbuf, obj->data, obj->len);
return 0;
}
EXPORT_SYMBOL(xdr_buf_read_netobj);
/* Returns 0 on success, or else a negative error code. */
static int
@ -1010,6 +1022,7 @@ xdr_decode_array2(struct xdr_buf *buf, unsigned int base,
return xdr_xcode_array2(buf, base, desc, 0);
}
EXPORT_SYMBOL(xdr_decode_array2);
int
xdr_encode_array2(struct xdr_buf *buf, unsigned int base,
@ -1021,6 +1034,7 @@ xdr_encode_array2(struct xdr_buf *buf, unsigned int base,
return xdr_xcode_array2(buf, base, desc, 1);
}
EXPORT_SYMBOL(xdr_encode_array2);
int
xdr_process_buf(struct xdr_buf *buf, unsigned int offset, unsigned int len,

54
net/sunrpc/xprt.c
View file

@ -501,9 +501,10 @@ EXPORT_SYMBOL_GPL(xprt_set_retrans_timeout_def);
void xprt_set_retrans_timeout_rtt(struct rpc_task *task)
{
int timer = task->tk_msg.rpc_proc->p_timer;
struct rpc_rtt *rtt = task->tk_client->cl_rtt;
struct rpc_clnt *clnt = task->tk_client;
struct rpc_rtt *rtt = clnt->cl_rtt;
struct rpc_rqst *req = task->tk_rqstp;
unsigned long max_timeout = req->rq_xprt->timeout.to_maxval;
unsigned long max_timeout = clnt->cl_timeout->to_maxval;
task->tk_timeout = rpc_calc_rto(rtt, timer);
task->tk_timeout <<= rpc_ntimeo(rtt, timer) + req->rq_retries;
@ -514,7 +515,7 @@ EXPORT_SYMBOL_GPL(xprt_set_retrans_timeout_rtt);
static void xprt_reset_majortimeo(struct rpc_rqst *req)
{
struct rpc_timeout *to = &req->rq_xprt->timeout;
const struct rpc_timeout *to = req->rq_task->tk_client->cl_timeout;
req->rq_majortimeo = req->rq_timeout;
if (to->to_exponential)
@ -534,7 +535,7 @@ static void xprt_reset_majortimeo(struct rpc_rqst *req)
int xprt_adjust_timeout(struct rpc_rqst *req)
{
struct rpc_xprt *xprt = req->rq_xprt;
struct rpc_timeout *to = &xprt->timeout;
const struct rpc_timeout *to = req->rq_task->tk_client->cl_timeout;
int status = 0;
if (time_before(jiffies, req->rq_majortimeo)) {
@ -568,17 +569,17 @@ static void xprt_autoclose(struct work_struct *work)
struct rpc_xprt *xprt =
container_of(work, struct rpc_xprt, task_cleanup);
xprt_disconnect(xprt);
xprt->ops->close(xprt);
clear_bit(XPRT_CLOSE_WAIT, &xprt->state);
xprt_release_write(xprt, NULL);
}
/**
* xprt_disconnect - mark a transport as disconnected
* xprt_disconnect_done - mark a transport as disconnected
* @xprt: transport to flag for disconnect
*
*/
void xprt_disconnect(struct rpc_xprt *xprt)
void xprt_disconnect_done(struct rpc_xprt *xprt)
{
dprintk("RPC: disconnected transport %p\n", xprt);
spin_lock_bh(&xprt->transport_lock);
@ -586,7 +587,26 @@ void xprt_disconnect(struct rpc_xprt *xprt)
xprt_wake_pending_tasks(xprt, -ENOTCONN);
spin_unlock_bh(&xprt->transport_lock);
}
EXPORT_SYMBOL_GPL(xprt_disconnect);
EXPORT_SYMBOL_GPL(xprt_disconnect_done);
/**
* xprt_force_disconnect - force a transport to disconnect
* @xprt: transport to disconnect
*
*/
void xprt_force_disconnect(struct rpc_xprt *xprt)
{
/* Don't race with the test_bit() in xprt_clear_locked() */
spin_lock_bh(&xprt->transport_lock);
set_bit(XPRT_CLOSE_WAIT, &xprt->state);
/* Try to schedule an autoclose RPC call */
if (test_and_set_bit(XPRT_LOCKED, &xprt->state) == 0)
queue_work(rpciod_workqueue, &xprt->task_cleanup);
else if (xprt->snd_task != NULL)
rpc_wake_up_task(xprt->snd_task);
spin_unlock_bh(&xprt->transport_lock);
}
EXPORT_SYMBOL_GPL(xprt_force_disconnect);
static void
xprt_init_autodisconnect(unsigned long data)
@ -909,7 +929,7 @@ static void xprt_request_init(struct rpc_task *task, struct rpc_xprt *xprt)
{
struct rpc_rqst *req = task->tk_rqstp;
req->rq_timeout = xprt->timeout.to_initval;
req->rq_timeout = task->tk_client->cl_timeout->to_initval;
req->rq_task = task;
req->rq_xprt = xprt;
req->rq_buffer = NULL;
@ -958,22 +978,6 @@ void xprt_release(struct rpc_task *task)
spin_unlock(&xprt->reserve_lock);
}
/**
* xprt_set_timeout - set constant RPC timeout
* @to: RPC timeout parameters to set up
* @retr: number of retries
* @incr: amount of increase after each retry
*
*/
void xprt_set_timeout(struct rpc_timeout *to, unsigned int retr, unsigned long incr)
{
to->to_initval =
to->to_increment = incr;
to->to_maxval = to->to_initval + (incr * retr);
to->to_retries = retr;
to->to_exponential = 0;
}
/**
* xprt_create_transport - create an RPC transport
* @args: rpc transport creation arguments

8
net/sunrpc/xprtrdma/rpc_rdma.c
View file

@ -83,7 +83,7 @@ static const char transfertypes[][12] = {
*/
static int
rpcrdma_convert_iovs(struct xdr_buf *xdrbuf, int pos,
rpcrdma_convert_iovs(struct xdr_buf *xdrbuf, unsigned int pos,
enum rpcrdma_chunktype type, struct rpcrdma_mr_seg *seg, int nsegs)
{
int len, n = 0, p;
@ -169,7 +169,7 @@ rpcrdma_create_chunks(struct rpc_rqst *rqst, struct xdr_buf *target,
struct rpcrdma_req *req = rpcr_to_rdmar(rqst);
struct rpcrdma_xprt *r_xprt = rpcx_to_rdmax(rqst->rq_task->tk_xprt);
int nsegs, nchunks = 0;
int pos;
unsigned int pos;
struct rpcrdma_mr_seg *seg = req->rl_segments;
struct rpcrdma_read_chunk *cur_rchunk = NULL;
struct rpcrdma_write_array *warray = NULL;
@ -213,7 +213,7 @@ rpcrdma_create_chunks(struct rpc_rqst *rqst, struct xdr_buf *target,
(__be32 *)&cur_rchunk->rc_target.rs_offset,
seg->mr_base);
dprintk("RPC: %s: read chunk "
"elem %d@0x%llx:0x%x pos %d (%s)\n", __func__,
"elem %d@0x%llx:0x%x pos %u (%s)\n", __func__,
seg->mr_len, (unsigned long long)seg->mr_base,
seg->mr_rkey, pos, n < nsegs ? "more" : "last");
cur_rchunk++;
@ -552,7 +552,7 @@ rpcrdma_marshal_req(struct rpc_rqst *rqst)
* RDMA'd by server. See map at rpcrdma_create_chunks()! :-)
*/
static int
rpcrdma_count_chunks(struct rpcrdma_rep *rep, int max, int wrchunk, __be32 **iptrp)
rpcrdma_count_chunks(struct rpcrdma_rep *rep, unsigned int max, int wrchunk, __be32 **iptrp)
{
unsigned int i, total_len;
struct rpcrdma_write_chunk *cur_wchunk;

27
net/sunrpc/xprtrdma/transport.c
View file

@ -212,12 +212,16 @@ xprt_rdma_format_addresses(struct rpc_xprt *xprt)
static void
xprt_rdma_free_addresses(struct rpc_xprt *xprt)
{
kfree(xprt->address_strings[RPC_DISPLAY_ADDR]);
kfree(xprt->address_strings[RPC_DISPLAY_PORT]);
kfree(xprt->address_strings[RPC_DISPLAY_ALL]);
kfree(xprt->address_strings[RPC_DISPLAY_HEX_ADDR]);
kfree(xprt->address_strings[RPC_DISPLAY_HEX_PORT]);
kfree(xprt->address_strings[RPC_DISPLAY_UNIVERSAL_ADDR]);
unsigned int i;
for (i = 0; i < RPC_DISPLAY_MAX; i++)
switch (i) {
case RPC_DISPLAY_PROTO:
case RPC_DISPLAY_NETID:
continue;
default:
kfree(xprt->address_strings[i]);
}
}
static void
@ -289,6 +293,11 @@ xprt_rdma_destroy(struct rpc_xprt *xprt)
module_put(THIS_MODULE);
}
static const struct rpc_timeout xprt_rdma_default_timeout = {
.to_initval = 60 * HZ,
.to_maxval = 60 * HZ,
};
/**
* xprt_setup_rdma - Set up transport to use RDMA
*
@ -327,7 +336,7 @@ xprt_setup_rdma(struct xprt_create *args)
}
/* 60 second timeout, no retries */
xprt_set_timeout(&xprt->timeout, 0, 60UL * HZ);
xprt->timeout = &xprt_rdma_default_timeout;
xprt->bind_timeout = (60U * HZ);
xprt->connect_timeout = (60U * HZ);
xprt->reestablish_timeout = (5U * HZ);
@ -449,7 +458,7 @@ xprt_rdma_close(struct rpc_xprt *xprt)
struct rpcrdma_xprt *r_xprt = rpcx_to_rdmax(xprt);
dprintk("RPC: %s: closing\n", __func__);
xprt_disconnect(xprt);
xprt_disconnect_done(xprt);
(void) rpcrdma_ep_disconnect(&r_xprt->rx_ep, &r_xprt->rx_ia);
}
@ -682,7 +691,7 @@ xprt_rdma_send_request(struct rpc_task *task)
}
if (rpcrdma_ep_post(&r_xprt->rx_ia, &r_xprt->rx_ep, req)) {
xprt_disconnect(xprt);
xprt_disconnect_done(xprt);
return -ENOTCONN; /* implies disconnect */
}

8
net/sunrpc/xprtrdma/verbs.c
View file

@ -522,7 +522,7 @@ rpcrdma_ep_create(struct rpcrdma_ep *ep, struct rpcrdma_ia *ia,
struct rpcrdma_create_data_internal *cdata)
{
struct ib_device_attr devattr;
int rc;
int rc, err;
rc = ib_query_device(ia->ri_id->device, &devattr);
if (rc) {
@ -648,8 +648,10 @@ rpcrdma_ep_create(struct rpcrdma_ep *ep, struct rpcrdma_ia *ia,
return 0;
out2:
if (ib_destroy_cq(ep->rep_cq))
;
err = ib_destroy_cq(ep->rep_cq);
if (err)
dprintk("RPC: %s: ib_destroy_cq returned %i\n",
__func__, err);
out1:
return rc;
}

226
net/sunrpc/xprtsock.c
View file

@ -280,7 +280,9 @@ static inline struct sockaddr_in6 *xs_addr_in6(struct rpc_xprt *xprt)
return (struct sockaddr_in6 *) &xprt->addr;
}
static void xs_format_ipv4_peer_addresses(struct rpc_xprt *xprt)
static void xs_format_ipv4_peer_addresses(struct rpc_xprt *xprt,
const char *protocol,
const char *netid)
{
struct sockaddr_in *addr = xs_addr_in(xprt);
char *buf;
@ -299,21 +301,14 @@ static void xs_format_ipv4_peer_addresses(struct rpc_xprt *xprt)
}
xprt->address_strings[RPC_DISPLAY_PORT] = buf;
buf = kzalloc(8, GFP_KERNEL);
if (buf) {
if (xprt->prot == IPPROTO_UDP)
snprintf(buf, 8, "udp");
else
snprintf(buf, 8, "tcp");
}
xprt->address_strings[RPC_DISPLAY_PROTO] = buf;
xprt->address_strings[RPC_DISPLAY_PROTO] = protocol;
buf = kzalloc(48, GFP_KERNEL);
if (buf) {
snprintf(buf, 48, "addr="NIPQUAD_FMT" port=%u proto=%s",
NIPQUAD(addr->sin_addr.s_addr),
ntohs(addr->sin_port),
xprt->prot == IPPROTO_UDP ? "udp" : "tcp");
protocol);
}
xprt->address_strings[RPC_DISPLAY_ALL] = buf;
@ -340,12 +335,12 @@ static void xs_format_ipv4_peer_addresses(struct rpc_xprt *xprt)
}
xprt->address_strings[RPC_DISPLAY_UNIVERSAL_ADDR] = buf;
xprt->address_strings[RPC_DISPLAY_NETID] =
kstrdup(xprt->prot == IPPROTO_UDP ?
RPCBIND_NETID_UDP : RPCBIND_NETID_TCP, GFP_KERNEL);
xprt->address_strings[RPC_DISPLAY_NETID] = netid;
}
static void xs_format_ipv6_peer_addresses(struct rpc_xprt *xprt)
static void xs_format_ipv6_peer_addresses(struct rpc_xprt *xprt,
const char *protocol,
const char *netid)
{
struct sockaddr_in6 *addr = xs_addr_in6(xprt);
char *buf;
@ -364,21 +359,14 @@ static void xs_format_ipv6_peer_addresses(struct rpc_xprt *xprt)
}
xprt->address_strings[RPC_DISPLAY_PORT] = buf;
buf = kzalloc(8, GFP_KERNEL);
if (buf) {
if (xprt->prot == IPPROTO_UDP)
snprintf(buf, 8, "udp");
else
snprintf(buf, 8, "tcp");
}
xprt->address_strings[RPC_DISPLAY_PROTO] = buf;
xprt->address_strings[RPC_DISPLAY_PROTO] = protocol;
buf = kzalloc(64, GFP_KERNEL);
if (buf) {
snprintf(buf, 64, "addr="NIP6_FMT" port=%u proto=%s",
NIP6(addr->sin6_addr),
ntohs(addr->sin6_port),
xprt->prot == IPPROTO_UDP ? "udp" : "tcp");
protocol);
}
xprt->address_strings[RPC_DISPLAY_ALL] = buf;
@ -405,17 +393,21 @@ static void xs_format_ipv6_peer_addresses(struct rpc_xprt *xprt)
}
xprt->address_strings[RPC_DISPLAY_UNIVERSAL_ADDR] = buf;
xprt->address_strings[RPC_DISPLAY_NETID] =
kstrdup(xprt->prot == IPPROTO_UDP ?
RPCBIND_NETID_UDP6 : RPCBIND_NETID_TCP6, GFP_KERNEL);
xprt->address_strings[RPC_DISPLAY_NETID] = netid;
}
static void xs_free_peer_addresses(struct rpc_xprt *xprt)
{
int i;
unsigned int i;
for (i = 0; i < RPC_DISPLAY_MAX; i++)
kfree(xprt->address_strings[i]);
switch (i) {
case RPC_DISPLAY_PROTO:
case RPC_DISPLAY_NETID:
continue;
default:
kfree(xprt->address_strings[i]);
}
}
#define XS_SENDMSG_FLAGS (MSG_DONTWAIT | MSG_NOSIGNAL)
@ -614,6 +606,22 @@ static int xs_udp_send_request(struct rpc_task *task)
return status;
}
/**
* xs_tcp_shutdown - gracefully shut down a TCP socket
* @xprt: transport
*
* Initiates a graceful shutdown of the TCP socket by calling the
* equivalent of shutdown(SHUT_WR);
*/
static void xs_tcp_shutdown(struct rpc_xprt *xprt)
{
struct sock_xprt *transport = container_of(xprt, struct sock_xprt, xprt);
struct socket *sock = transport->sock;
if (sock != NULL)
kernel_sock_shutdown(sock, SHUT_WR);
}
static inline void xs_encode_tcp_record_marker(struct xdr_buf *buf)
{
u32 reclen = buf->len - sizeof(rpc_fraghdr);
@ -691,7 +699,7 @@ static int xs_tcp_send_request(struct rpc_task *task)
default:
dprintk("RPC: sendmsg returned unrecognized error %d\n",
-status);
xprt_disconnect(xprt);
xs_tcp_shutdown(xprt);
break;
}
@ -759,7 +767,9 @@ static void xs_close(struct rpc_xprt *xprt)
clear_close_wait:
smp_mb__before_clear_bit();
clear_bit(XPRT_CLOSE_WAIT, &xprt->state);
clear_bit(XPRT_CLOSING, &xprt->state);
smp_mb__after_clear_bit();
xprt_disconnect_done(xprt);
}
/**
@ -775,7 +785,6 @@ static void xs_destroy(struct rpc_xprt *xprt)
cancel_rearming_delayed_work(&transport->connect_worker);
xprt_disconnect(xprt);
xs_close(xprt);
xs_free_peer_addresses(xprt);
kfree(xprt->slot);
@ -886,7 +895,7 @@ static inline void xs_tcp_read_fraghdr(struct rpc_xprt *xprt, struct xdr_skb_rea
/* Sanity check of the record length */
if (unlikely(transport->tcp_reclen < 4)) {
dprintk("RPC: invalid TCP record fragment length\n");
xprt_disconnect(xprt);
xprt_force_disconnect(xprt);
return;
}
dprintk("RPC: reading TCP record fragment of length %d\n",
@ -1113,21 +1122,44 @@ static void xs_tcp_state_change(struct sock *sk)
transport->tcp_flags =
TCP_RCV_COPY_FRAGHDR | TCP_RCV_COPY_XID;
xprt->reestablish_timeout = XS_TCP_INIT_REEST_TO;
xprt_wake_pending_tasks(xprt, 0);
}
spin_unlock_bh(&xprt->transport_lock);
break;
case TCP_SYN_SENT:
case TCP_SYN_RECV:
case TCP_FIN_WAIT1:
/* The client initiated a shutdown of the socket */
xprt->reestablish_timeout = 0;
set_bit(XPRT_CLOSING, &xprt->state);
smp_mb__before_clear_bit();
clear_bit(XPRT_CONNECTED, &xprt->state);
clear_bit(XPRT_CLOSE_WAIT, &xprt->state);
smp_mb__after_clear_bit();
break;
case TCP_CLOSE_WAIT:
/* Try to schedule an autoclose RPC calls */
set_bit(XPRT_CLOSE_WAIT, &xprt->state);
if (test_and_set_bit(XPRT_LOCKED, &xprt->state) == 0)
queue_work(rpciod_workqueue, &xprt->task_cleanup);
default:
xprt_disconnect(xprt);
/* The server initiated a shutdown of the socket */
set_bit(XPRT_CLOSING, &xprt->state);
xprt_force_disconnect(xprt);
case TCP_SYN_SENT:
case TCP_CLOSING:
/*
* If the server closed down the connection, make sure that
* we back off before reconnecting
*/
if (xprt->reestablish_timeout < XS_TCP_INIT_REEST_TO)
xprt->reestablish_timeout = XS_TCP_INIT_REEST_TO;
break;
case TCP_LAST_ACK:
smp_mb__before_clear_bit();
clear_bit(XPRT_CONNECTED, &xprt->state);
smp_mb__after_clear_bit();
break;
case TCP_CLOSE:
smp_mb__before_clear_bit();
clear_bit(XPRT_CLOSE_WAIT, &xprt->state);
clear_bit(XPRT_CLOSING, &xprt->state);
smp_mb__after_clear_bit();
/* Mark transport as closed and wake up all pending tasks */
xprt_disconnect_done(xprt);
}
out:
read_unlock(&sk->sk_callback_lock);
@ -1279,34 +1311,53 @@ static void xs_set_port(struct rpc_xprt *xprt, unsigned short port)
}
}
static unsigned short xs_get_srcport(struct sock_xprt *transport, struct socket *sock)
{
unsigned short port = transport->port;
if (port == 0 && transport->xprt.resvport)
port = xs_get_random_port();
return port;
}
static unsigned short xs_next_srcport(struct sock_xprt *transport, struct socket *sock, unsigned short port)
{
if (transport->port != 0)
transport->port = 0;
if (!transport->xprt.resvport)
return 0;
if (port <= xprt_min_resvport || port > xprt_max_resvport)
return xprt_max_resvport;
return --port;
}
static int xs_bind4(struct sock_xprt *transport, struct socket *sock)
{
struct sockaddr_in myaddr = {
.sin_family = AF_INET,
};
struct sockaddr_in *sa;
int err;
unsigned short port = transport->port;
int err, nloop = 0;
unsigned short port = xs_get_srcport(transport, sock);
unsigned short last;
if (!transport->xprt.resvport)
port = 0;
sa = (struct sockaddr_in *)&transport->addr;
myaddr.sin_addr = sa->sin_addr;
do {
myaddr.sin_port = htons(port);
err = kernel_bind(sock, (struct sockaddr *) &myaddr,
sizeof(myaddr));
if (!transport->xprt.resvport)
if (port == 0)
break;
if (err == 0) {
transport->port = port;
break;
}
if (port <= xprt_min_resvport)
port = xprt_max_resvport;
else
port--;
} while (err == -EADDRINUSE && port != transport->port);
last = port;
port = xs_next_srcport(transport, sock, port);
if (port > last)
nloop++;
} while (err == -EADDRINUSE && nloop != 2);
dprintk("RPC: %s "NIPQUAD_FMT":%u: %s (%d)\n",
__FUNCTION__, NIPQUAD(myaddr.sin_addr),
port, err ? "failed" : "ok", err);
@ -1319,28 +1370,27 @@ static int xs_bind6(struct sock_xprt *transport, struct socket *sock)
.sin6_family = AF_INET6,
};
struct sockaddr_in6 *sa;
int err;
unsigned short port = transport->port;
int err, nloop = 0;
unsigned short port = xs_get_srcport(transport, sock);
unsigned short last;
if (!transport->xprt.resvport)
port = 0;
sa = (struct sockaddr_in6 *)&transport->addr;
myaddr.sin6_addr = sa->sin6_addr;
do {
myaddr.sin6_port = htons(port);
err = kernel_bind(sock, (struct sockaddr *) &myaddr,
sizeof(myaddr));
if (!transport->xprt.resvport)
if (port == 0)
break;
if (err == 0) {
transport->port = port;
break;
}
if (port <= xprt_min_resvport)
port = xprt_max_resvport;
else
port--;
} while (err == -EADDRINUSE && port != transport->port);
last = port;
port = xs_next_srcport(transport, sock, port);
if (port > last)
nloop++;
} while (err == -EADDRINUSE && nloop != 2);
dprintk("RPC: xs_bind6 "NIP6_FMT":%u: %s (%d)\n",
NIP6(myaddr.sin6_addr), port, err ? "failed" : "ok", err);
return err;
@ -1602,8 +1652,7 @@ static void xs_tcp_connect_worker4(struct work_struct *work)
break;
default:
/* get rid of existing socket, and retry */
xs_close(xprt);
break;
xs_tcp_shutdown(xprt);
}
}
out:
@ -1662,8 +1711,7 @@ static void xs_tcp_connect_worker6(struct work_struct *work)
break;
default:
/* get rid of existing socket, and retry */
xs_close(xprt);
break;
xs_tcp_shutdown(xprt);
}
}
out:
@ -1710,6 +1758,19 @@ static void xs_connect(struct rpc_task *task)
}
}
static void xs_tcp_connect(struct rpc_task *task)
{
struct rpc_xprt *xprt = task->tk_xprt;
/* Initiate graceful shutdown of the socket if not already done */
if (test_bit(XPRT_CONNECTED, &xprt->state))
xs_tcp_shutdown(xprt);
/* Exit if we need to wait for socket shutdown to complete */
if (test_bit(XPRT_CLOSING, &xprt->state))
return;
xs_connect(task);
}
/**
* xs_udp_print_stats - display UDP socket-specifc stats
* @xprt: rpc_xprt struct containing statistics
@ -1780,12 +1841,12 @@ static struct rpc_xprt_ops xs_tcp_ops = {
.release_xprt = xs_tcp_release_xprt,
.rpcbind = rpcb_getport_async,
.set_port = xs_set_port,
.connect = xs_connect,
.connect = xs_tcp_connect,
.buf_alloc = rpc_malloc,
.buf_free = rpc_free,
.send_request = xs_tcp_send_request,
.set_retrans_timeout = xprt_set_retrans_timeout_def,
.close = xs_close,
.close = xs_tcp_shutdown,
.destroy = xs_destroy,
.print_stats = xs_tcp_print_stats,
};
@ -1822,11 +1883,17 @@ static struct rpc_xprt *xs_setup_xprt(struct xprt_create *args,
xprt->addrlen = args->addrlen;
if (args->srcaddr)
memcpy(&new->addr, args->srcaddr, args->addrlen);
new->port = xs_get_random_port();
return xprt;
}
static const struct rpc_timeout xs_udp_default_timeout = {
.to_initval = 5 * HZ,
.to_maxval = 30 * HZ,
.to_increment = 5 * HZ,
.to_retries = 5,
};
/**
* xs_setup_udp - Set up transport to use a UDP socket
* @args: rpc transport creation arguments
@ -1855,10 +1922,7 @@ static struct rpc_xprt *xs_setup_udp(struct xprt_create *args)
xprt->ops = &xs_udp_ops;
if (args->timeout)
xprt->timeout = *args->timeout;
else
xprt_set_timeout(&xprt->timeout, 5, 5 * HZ);
xprt->timeout = &xs_udp_default_timeout;
switch (addr->sa_family) {
case AF_INET:
@ -1867,7 +1931,7 @@ static struct rpc_xprt *xs_setup_udp(struct xprt_create *args)
INIT_DELAYED_WORK(&transport->connect_worker,
xs_udp_connect_worker4);
xs_format_ipv4_peer_addresses(xprt);
xs_format_ipv4_peer_addresses(xprt, "udp", RPCBIND_NETID_UDP);
break;
case AF_INET6:
if (((struct sockaddr_in6 *)addr)->sin6_port != htons(0))
@ -1875,7 +1939,7 @@ static struct rpc_xprt *xs_setup_udp(struct xprt_create *args)
INIT_DELAYED_WORK(&transport->connect_worker,
xs_udp_connect_worker6);
xs_format_ipv6_peer_addresses(xprt);
xs_format_ipv6_peer_addresses(xprt, "udp", RPCBIND_NETID_UDP6);
break;
default:
kfree(xprt);
@ -1893,6 +1957,12 @@ static struct rpc_xprt *xs_setup_udp(struct xprt_create *args)
return ERR_PTR(-EINVAL);
}
static const struct rpc_timeout xs_tcp_default_timeout = {
.to_initval = 60 * HZ,
.to_maxval = 60 * HZ,
.to_retries = 2,
};
/**
* xs_setup_tcp - Set up transport to use a TCP socket
* @args: rpc transport creation arguments
@ -1919,11 +1989,7 @@ static struct rpc_xprt *xs_setup_tcp(struct xprt_create *args)
xprt->idle_timeout = XS_IDLE_DISC_TO;
xprt->ops = &xs_tcp_ops;
if (args->timeout)
xprt->timeout = *args->timeout;
else
xprt_set_timeout(&xprt->timeout, 2, 60 * HZ);
xprt->timeout = &xs_tcp_default_timeout;
switch (addr->sa_family) {
case AF_INET:
@ -1931,14 +1997,14 @@ static struct rpc_xprt *xs_setup_tcp(struct xprt_create *args)
xprt_set_bound(xprt);
INIT_DELAYED_WORK(&transport->connect_worker, xs_tcp_connect_worker4);
xs_format_ipv4_peer_addresses(xprt);
xs_format_ipv4_peer_addresses(xprt, "tcp", RPCBIND_NETID_TCP);
break;
case AF_INET6:
if (((struct sockaddr_in6 *)addr)->sin6_port != htons(0))
xprt_set_bound(xprt);
INIT_DELAYED_WORK(&transport->connect_worker, xs_tcp_connect_worker6);
xs_format_ipv6_peer_addresses(xprt);
xs_format_ipv6_peer_addresses(xprt, "tcp", RPCBIND_NETID_TCP6);
break;
default:
kfree(xprt);