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knfsd: nfsd4: implement secinfo

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Implement the secinfo operation.

(Thanks to Usha Ketineni wrote an earlier version of this support.)

Cc: Usha Ketineni <uketinen@us.ibm.com>
Signed-off-by: Andy Adamson <andros@citi.umich.edu>
Signed-off-by: "J. Bruce Fields" <bfields@citi.umich.edu>
Signed-off-by: Neil Brown <neilb@suse.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Andy Adamson 2007-07-17 04:04:51 -07:00 committed by Linus Torvalds
parent ae4c40b1d8
commit dcb488a3b7
4 changed files with 113 additions and 0 deletions
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28
fs/nfsd/nfs4proc.c
View file

@ -47,6 +47,7 @@
#include <linux/nfsd/state.h>
#include <linux/nfsd/xdr4.h>
#include <linux/nfs4_acl.h>
#include <linux/sunrpc/gss_api.h>
#define NFSDDBG_FACILITY NFSDDBG_PROC
@ -609,6 +610,30 @@ nfsd4_rename(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
return status;
}
static __be32
nfsd4_secinfo(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
struct nfsd4_secinfo *secinfo)
{
struct svc_fh resfh;
struct svc_export *exp;
struct dentry *dentry;
__be32 err;
fh_init(&resfh, NFS4_FHSIZE);
err = nfsd_lookup_dentry(rqstp, &cstate->current_fh,
secinfo->si_name, secinfo->si_namelen,
&exp, &dentry);
if (err)
return err;
if (dentry->d_inode == NULL) {
exp_put(exp);
err = nfserr_noent;
} else
secinfo->si_exp = exp;
dput(dentry);
return err;
}
static __be32
nfsd4_setattr(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
struct nfsd4_setattr *setattr)
@ -1008,6 +1033,9 @@ static struct nfsd4_operation nfsd4_ops[OP_RELEASE_LOCKOWNER+1] = {
[OP_SAVEFH] = {
.op_func = (nfsd4op_func)nfsd4_savefh,
},
[OP_SECINFO] = {
.op_func = (nfsd4op_func)nfsd4_secinfo,
},
[OP_SETATTR] = {
.op_func = (nfsd4op_func)nfsd4_setattr,
},

75
fs/nfsd/nfs4xdr.c
View file

@ -56,6 +56,7 @@
#include <linux/nfsd_idmap.h>
#include <linux/nfs4.h>
#include <linux/nfs4_acl.h>
#include <linux/sunrpc/gss_api.h>
#define NFSDDBG_FACILITY NFSDDBG_XDR
@ -818,6 +819,23 @@ nfsd4_decode_renew(struct nfsd4_compoundargs *argp, clientid_t *clientid)
DECODE_TAIL;
}
static __be32
nfsd4_decode_secinfo(struct nfsd4_compoundargs *argp,
struct nfsd4_secinfo *secinfo)
{
DECODE_HEAD;
READ_BUF(4);
READ32(secinfo->si_namelen);
READ_BUF(secinfo->si_namelen);
SAVEMEM(secinfo->si_name, secinfo->si_namelen);
status = check_filename(secinfo->si_name, secinfo->si_namelen,
nfserr_noent);
if (status)
return status;
DECODE_TAIL;
}
static __be32
nfsd4_decode_setattr(struct nfsd4_compoundargs *argp, struct nfsd4_setattr *setattr)
{
@ -1131,6 +1149,9 @@ nfsd4_decode_compound(struct nfsd4_compoundargs *argp)
case OP_SAVEFH:
op->status = nfs_ok;
break;
case OP_SECINFO:
op->status = nfsd4_decode_secinfo(argp, &op->u.secinfo);
break;
case OP_SETATTR:
op->status = nfsd4_decode_setattr(argp, &op->u.setattr);
break;
@ -1847,11 +1868,19 @@ nfsd4_encode_dirent_fattr(struct nfsd4_readdir *cd,
if (d_mountpoint(dentry)) {
int err;
/*
* Why the heck aren't we just using nfsd_lookup??
* Different "."/".." handling? Something else?
* At least, add a comment here to explain....
*/
err = nfsd_cross_mnt(cd->rd_rqstp, &dentry, &exp);
if (err) {
nfserr = nfserrno(err);
goto out_put;
}
nfserr = check_nfsd_access(exp, cd->rd_rqstp);
if (nfserr)
goto out_put;
}
nfserr = nfsd4_encode_fattr(NULL, exp, dentry, p, buflen, cd->rd_bmval,
@ -2419,6 +2448,49 @@ nfsd4_encode_rename(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_
}
}
static void
nfsd4_encode_secinfo(struct nfsd4_compoundres *resp, int nfserr,
struct nfsd4_secinfo *secinfo)
{
int i = 0;
struct svc_export *exp = secinfo->si_exp;
ENCODE_HEAD;
if (nfserr)
goto out;
RESERVE_SPACE(4);
WRITE32(exp->ex_nflavors);
ADJUST_ARGS();
for (i = 0; i < exp->ex_nflavors; i++) {
u32 flav = exp->ex_flavors[i].pseudoflavor;
struct gss_api_mech *gm = gss_mech_get_by_pseudoflavor(flav);
if (gm) {
RESERVE_SPACE(4);
WRITE32(RPC_AUTH_GSS);
ADJUST_ARGS();
RESERVE_SPACE(4 + gm->gm_oid.len);
WRITE32(gm->gm_oid.len);
WRITEMEM(gm->gm_oid.data, gm->gm_oid.len);
ADJUST_ARGS();
RESERVE_SPACE(4);
WRITE32(0); /* qop */
ADJUST_ARGS();
RESERVE_SPACE(4);
WRITE32(gss_pseudoflavor_to_service(gm, flav));
ADJUST_ARGS();
gss_mech_put(gm);
} else {
RESERVE_SPACE(4);
WRITE32(flav);
ADJUST_ARGS();
}
}
out:
if (exp)
exp_put(exp);
}
/*
* The SETATTR encode routine is special -- it always encodes a bitmap,
* regardless of the error status.
@ -2559,6 +2631,9 @@ nfsd4_encode_operation(struct nfsd4_compoundres *resp, struct nfsd4_op *op)
break;
case OP_SAVEFH:
break;
case OP_SECINFO:
nfsd4_encode_secinfo(resp, op->status, &op->u.secinfo);
break;
case OP_SETATTR:
nfsd4_encode_setattr(resp, op->status, &op->u.setattr);
break;

3
include/linux/nfsd/nfsd.h
View file

@ -71,6 +71,9 @@ int nfsd_cross_mnt(struct svc_rqst *rqstp, struct dentry **dpp,
struct svc_export **expp);
__be32 nfsd_lookup(struct svc_rqst *, struct svc_fh *,
const char *, int, struct svc_fh *);
__be32 nfsd_lookup_dentry(struct svc_rqst *, struct svc_fh *,
const char *, int,
struct svc_export **, struct dentry **);
__be32 nfsd_setattr(struct svc_rqst *, struct svc_fh *,
struct iattr *, int, time_t);
#ifdef CONFIG_NFSD_V4

7
include/linux/nfsd/xdr4.h
View file

@ -293,6 +293,12 @@ struct nfsd4_rename {
struct nfsd4_change_info rn_tinfo; /* response */
};
struct nfsd4_secinfo {
u32 si_namelen; /* request */
char *si_name; /* request */
struct svc_export *si_exp; /* response */
};
struct nfsd4_setattr {
stateid_t sa_stateid; /* request */
u32 sa_bmval[2]; /* request */
@ -365,6 +371,7 @@ struct nfsd4_op {
struct nfsd4_remove remove;
struct nfsd4_rename rename;
clientid_t renew;
struct nfsd4_secinfo secinfo;
struct nfsd4_setattr setattr;
struct nfsd4_setclientid setclientid;
struct nfsd4_setclientid_confirm setclientid_confirm;