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Commit b78a7226 authored by Christoph Hellwig's avatar Christoph Hellwig Committed by Greg Kroah-Hartman
Browse files

fs: add a vfs_fchmod helper 



[ Upstream commit 9e96c8c0e94eea2f69a9705f5d0f51928ea26c17 ]

Add a helper for struct file based chmode operations.  To be used by
the initramfs code soon.

Signed-off-by: default avatarChristoph Hellwig <hch@lst.de>
Acked-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
Stable-dep-of: 4624b346cf67 ("init: open /initrd.image with O_LARGEFILE")
Signed-off-by: default avatarSasha Levin <sashal@kernel.org>
parent c2f18e9a

fs/open.c

+7 −2
Original line number Diff line number Diff line
@@ -569,14 +569,19 @@ static int chmod_common(const struct path *path, umode_t mode) 
	return error;

}



int vfs_fchmod(struct file *file, umode_t mode)

{

	audit_file(file);

	return chmod_common(&file->f_path, mode);

}



int ksys_fchmod(unsigned int fd, umode_t mode)

{

	struct fd f = fdget(fd);

	int err = -EBADF;



	if (f.file) {

		audit_file(f.file);

		err = chmod_common(&f.file->f_path, mode);

		err = vfs_fchmod(f.file, mode);

		fdput(f);

	}

	return err;

include/linux/fs.h

+1 −0
Original line number Diff line number Diff line
@@ -1661,6 +1661,7 @@ int vfs_mkobj(struct dentry *, umode_t, 
		void *);



int vfs_fchown(struct file *file, uid_t user, gid_t group);

int vfs_fchmod(struct file *file, umode_t mode);



extern long vfs_ioctl(struct file *file, unsigned int cmd, unsigned long arg);