From b873498f99c77e7b5be3aa5ffe9ca67437232fe0 Mon Sep 17 00:00:00 2001 From: Christoph Hellwig Date: Wed, 22 Jul 2020 11:13:26 +0200 Subject: init: add an init_chown helper Add a simple helper to chown with a kernel space file name and switch the early init code over to it. Signed-off-by: Christoph Hellwig --- fs/init.c | 18 ++++++++++++++++++ 1 file changed, 18 insertions(+) (limited to 'fs/init.c') diff --git a/fs/init.c b/fs/init.c index 2c78f24814dd..edd024465595 100644 --- a/fs/init.c +++ b/fs/init.c @@ -78,6 +78,24 @@ dput_and_out: return error; } +int __init init_chown(const char *filename, uid_t user, gid_t group, int flags) +{ + int lookup_flags = (flags & AT_SYMLINK_NOFOLLOW) ? 0 : LOOKUP_FOLLOW; + struct path path; + int error; + + error = kern_path(filename, lookup_flags, &path); + if (error) + return error; + error = mnt_want_write(path.mnt); + if (!error) { + error = chown_common(&path, user, group); + mnt_drop_write(path.mnt); + } + path_put(&path); + return error; +} + int __init init_unlink(const char *pathname) { return do_unlinkat(AT_FDCWD, getname_kernel(pathname)); -- cgit v1.2.3-70-g09d2