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switch stat_file() to passing a single struct rather than fsckloads of pointers

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Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
This commit is contained in:
Al Viro 2010-06-06 20:08:56 -04:00
parent 5e2df28cc6
commit 39b743c619
3 changed files with 58 additions and 68 deletions
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20
fs/hostfs/hostfs.h
View file

@ -53,11 +53,21 @@ struct hostfs_iattr {
struct timespec ia_ctime;
};
extern int stat_file(const char *path, unsigned long long *inode_out,
int *mode_out, int *nlink_out, int *uid_out, int *gid_out,
unsigned long long *size_out, struct timespec *atime_out,
struct timespec *mtime_out, struct timespec *ctime_out,
int *blksize_out, unsigned long long *blocks_out, int fd);
struct hostfs_stat {
unsigned long long ino;
unsigned int mode;
unsigned int nlink;
unsigned int uid;
unsigned int gid;
unsigned long long size;
struct timespec atime, mtime, ctime;
unsigned int blksize;
unsigned long long blocks;
unsigned int maj;
unsigned int min;
};
extern int stat_file(const char *path, struct hostfs_stat *p, int fd);
extern int access_file(char *path, int r, int w, int x);
extern int open_file(char *path, int r, int w, int append);
extern int file_type(const char *path, int *maj, int *min);

31
fs/hostfs/hostfs_kern.c
View file

@ -131,28 +131,21 @@ static char *inode_name(struct inode *ino, int extra)
static int read_name(struct inode *ino, char *name)
{
/*
* The non-int inode fields are copied into ints by stat_file and
* then copied into the inode because passing the actual pointers
* in and having them treated as int * breaks on big-endian machines
*/
int err;
int i_mode, i_nlink, i_blksize;
unsigned long long i_size;
unsigned long long i_ino;
unsigned long long i_blocks;
err = stat_file(name, &i_ino, &i_mode, &i_nlink, &ino->i_uid,
&ino->i_gid, &i_size, &ino->i_atime, &ino->i_mtime,
&ino->i_ctime, &i_blksize, &i_blocks, -1);
struct hostfs_stat st;
int err = stat_file(name, &st, -1);
if (err)
return err;
ino->i_ino = i_ino;
ino->i_mode = i_mode;
ino->i_nlink = i_nlink;
ino->i_size = i_size;
ino->i_blocks = i_blocks;
ino->i_ino = st.ino;
ino->i_mode = st.mode;
ino->i_nlink = st.nlink;
ino->i_uid = st.uid;
ino->i_gid = st.gid;
ino->i_atime = st.atime;
ino->i_mtime = st.mtime;
ino->i_ctime = st.ctime;
ino->i_size = st.size;
ino->i_blocks = st.blocks;
return 0;
}

75
fs/hostfs/hostfs_user.c
View file

@ -19,11 +19,27 @@
#include "user.h"
#include <utime.h>
int stat_file(const char *path, unsigned long long *inode_out, int *mode_out,
int *nlink_out, int *uid_out, int *gid_out,
unsigned long long *size_out, struct timespec *atime_out,
struct timespec *mtime_out, struct timespec *ctime_out,
int *blksize_out, unsigned long long *blocks_out, int fd)
static void stat64_to_hostfs(const struct stat64 *buf, struct hostfs_stat *p)
{
p->ino = buf->st_ino;
p->mode = buf->st_mode;
p->nlink = buf->st_nlink;
p->uid = buf->st_uid;
p->gid = buf->st_gid;
p->size = buf->st_size;
p->atime.tv_sec = buf->st_atime;
p->atime.tv_nsec = 0;
p->ctime.tv_sec = buf->st_ctime;
p->ctime.tv_nsec = 0;
p->mtime.tv_sec = buf->st_mtime;
p->mtime.tv_nsec = 0;
p->blksize = buf->st_blksize;
p->blocks = buf->st_blocks;
p->maj = os_major(buf->st_rdev);
p->min = os_minor(buf->st_rdev);
}
int stat_file(const char *path, struct hostfs_stat *p, int fd)
{
struct stat64 buf;
@ -33,35 +49,7 @@ int stat_file(const char *path, unsigned long long *inode_out, int *mode_out,
} else if (lstat64(path, &buf) < 0) {
return -errno;
}
if (inode_out != NULL)
*inode_out = buf.st_ino;
if (mode_out != NULL)
*mode_out = buf.st_mode;
if (nlink_out != NULL)
*nlink_out = buf.st_nlink;
if (uid_out != NULL)
*uid_out = buf.st_uid;
if (gid_out != NULL)
*gid_out = buf.st_gid;
if (size_out != NULL)
*size_out = buf.st_size;
if (atime_out != NULL) {
atime_out->tv_sec = buf.st_atime;
atime_out->tv_nsec = 0;
}
if (mtime_out != NULL) {
mtime_out->tv_sec = buf.st_mtime;
mtime_out->tv_nsec = 0;
}
if (ctime_out != NULL) {
ctime_out->tv_sec = buf.st_ctime;
ctime_out->tv_nsec = 0;
}
if (blksize_out != NULL)
*blksize_out = buf.st_blksize;
if (blocks_out != NULL)
*blocks_out = buf.st_blocks;
stat64_to_hostfs(&buf, p);
return 0;
}
@ -235,8 +223,8 @@ int file_create(char *name, int ur, int uw, int ux, int gr,
int set_attr(const char *file, struct hostfs_iattr *attrs, int fd)
{
struct hostfs_stat st;
struct timeval times[2];
struct timespec atime_ts, mtime_ts;
int err, ma;
if (attrs->ia_valid & HOSTFS_ATTR_MODE) {
@ -279,15 +267,14 @@ int set_attr(const char *file, struct hostfs_iattr *attrs, int fd)
*/
ma = (HOSTFS_ATTR_ATIME_SET | HOSTFS_ATTR_MTIME_SET);
if (attrs->ia_valid & ma) {
err = stat_file(file, NULL, NULL, NULL, NULL, NULL, NULL,
&atime_ts, &mtime_ts, NULL, NULL, NULL, fd);
err = stat_file(file, &st, fd);
if (err != 0)
return err;
times[0].tv_sec = atime_ts.tv_sec;
times[0].tv_usec = atime_ts.tv_nsec / 1000;
times[1].tv_sec = mtime_ts.tv_sec;
times[1].tv_usec = mtime_ts.tv_nsec / 1000;
times[0].tv_sec = st.atime.tv_sec;
times[0].tv_usec = st.atime.tv_nsec / 1000;
times[1].tv_sec = st.mtime.tv_sec;
times[1].tv_usec = st.mtime.tv_nsec / 1000;
if (attrs->ia_valid & HOSTFS_ATTR_ATIME_SET) {
times[0].tv_sec = attrs->ia_atime.tv_sec;
@ -308,9 +295,9 @@ int set_attr(const char *file, struct hostfs_iattr *attrs, int fd)
/* Note: ctime is not handled */
if (attrs->ia_valid & (HOSTFS_ATTR_ATIME | HOSTFS_ATTR_MTIME)) {
err = stat_file(file, NULL, NULL, NULL, NULL, NULL, NULL,
&attrs->ia_atime, &attrs->ia_mtime, NULL,
NULL, NULL, fd);
err = stat_file(file, &st, fd);
attrs->ia_atime = st.atime;
attrs->ia_mtime = st.mtime;
if (err != 0)
return err;
}