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Separate out common fstatat code into vfs_fstatat

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This is a version incorporating Christoph's suggestion.

Separate out common *fstatat functionality into a single function
instead of duplicating it all over the code.

Signed-off-by: Oleg Drokin <green@linuxhacker.ru>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
This commit is contained in:
Oleg Drokin
2009-04-08 20:05:42 +04:00
committed by Al Viro
parent fd56d242b3
commit 0112fc2229
7 changed files with 54 additions and 97 deletions
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56
fs/stat.c
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@ -109,6 +109,24 @@ int vfs_fstat(unsigned int fd, struct kstat *stat)
EXPORT_SYMBOL(vfs_fstat);
int vfs_fstatat(int dfd, char __user *filename, struct kstat *stat, int flag)
{
int error = -EINVAL;
if ((flag & ~AT_SYMLINK_NOFOLLOW) != 0)
goto out;
if (flag & AT_SYMLINK_NOFOLLOW)
error = vfs_lstat_fd(dfd, filename, stat);
else
error = vfs_stat_fd(dfd, filename, stat);
out:
return error;
}
EXPORT_SYMBOL(vfs_fstatat);
#ifdef __ARCH_WANT_OLD_STAT
/*
@ -264,21 +282,12 @@ SYSCALL_DEFINE4(newfstatat, int, dfd, char __user *, filename,
struct stat __user *, statbuf, int, flag)
{
struct kstat stat;
int error = -EINVAL;
int error;
if ((flag & ~AT_SYMLINK_NOFOLLOW) != 0)
goto out;
if (flag & AT_SYMLINK_NOFOLLOW)
error = vfs_lstat_fd(dfd, filename, &stat);
else
error = vfs_stat_fd(dfd, filename, &stat);
if (!error)
error = cp_new_stat(&stat, statbuf);
out:
return error;
error = vfs_fstatat(dfd, filename, &stat, flag);
if (error)
return error;
return cp_new_stat(&stat, statbuf);
}
#endif
@ -404,21 +413,12 @@ SYSCALL_DEFINE4(fstatat64, int, dfd, char __user *, filename,
struct stat64 __user *, statbuf, int, flag)
{
struct kstat stat;
int error = -EINVAL;
int error;
if ((flag & ~AT_SYMLINK_NOFOLLOW) != 0)
goto out;
if (flag & AT_SYMLINK_NOFOLLOW)
error = vfs_lstat_fd(dfd, filename, &stat);
else
error = vfs_stat_fd(dfd, filename, &stat);
if (!error)
error = cp_new_stat64(&stat, statbuf);
out:
return error;
error = vfs_fstatat(dfd, filename, &stat, flag);
if (error)
return error;
return cp_new_stat64(&stat, statbuf);
}
#endif /* __ARCH_WANT_STAT64 */