diff options
author | Christoph Hellwig <hch@lst.de> | 2020-07-14 08:47:43 +0200 |
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committer | Christoph Hellwig <hch@lst.de> | 2020-07-16 15:33:00 +0200 |
commit | c04011fe8cbd80af1be6e12b53193bf3846750d7 (patch) | |
tree | 7cf3bf49adc28ad5ff133986dee7f0e888bc16da /fs/open.c | |
parent | Merge tag 'clk-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/... (diff) | |
download | linux-c04011fe8cbd80af1be6e12b53193bf3846750d7.tar.xz linux-c04011fe8cbd80af1be6e12b53193bf3846750d7.zip |
fs: add a vfs_fchown helper
Add a helper for struct file based chown operations. To be used by
the initramfs code soon.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Acked-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'fs/open.c')
-rw-r--r-- | fs/open.c | 29 |
1 files changed, 17 insertions, 12 deletions
diff --git a/fs/open.c b/fs/open.c index 6cd48a61cda3..103c66309bee 100644 --- a/fs/open.c +++ b/fs/open.c @@ -740,23 +740,28 @@ SYSCALL_DEFINE3(lchown, const char __user *, filename, uid_t, user, gid_t, group AT_SYMLINK_NOFOLLOW); } +int vfs_fchown(struct file *file, uid_t user, gid_t group) +{ + int error; + + error = mnt_want_write_file(file); + if (error) + return error; + audit_file(file); + error = chown_common(&file->f_path, user, group); + mnt_drop_write_file(file); + return error; +} + int ksys_fchown(unsigned int fd, uid_t user, gid_t group) { struct fd f = fdget(fd); int error = -EBADF; - if (!f.file) - goto out; - - error = mnt_want_write_file(f.file); - if (error) - goto out_fput; - audit_file(f.file); - error = chown_common(&f.file->f_path, user, group); - mnt_drop_write_file(f.file); -out_fput: - fdput(f); -out: + if (f.file) { + error = vfs_fchown(f.file, user, group); + fdput(f); + } return error; } |