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authorChristian Brauner <christian.brauner@ubuntu.com>2021-01-21 16:19:22 +0300
committerChristian Brauner <christian.brauner@ubuntu.com>2021-01-24 16:27:16 +0300
commit02f92b3868a1b34ab98464e76b0e4e060474ba10 (patch)
tree355710b868f8a26f8fd5ba413938f92f8a24b68a /net/unix
parente6c9a71451560edba343cbcbd500bea0a188f0d1 (diff)
downloadlinux-02f92b3868a1b34ab98464e76b0e4e060474ba10.tar.xz
fs: add file and path permissions helpers
Add two simple helpers to check permissions on a file and path respectively and convert over some callers. It simplifies quite a few codepaths and also reduces the churn in later patches quite a bit. Christoph also correctly points out that this makes codepaths (e.g. ioctls) way easier to follow that would otherwise have to do more complex argument passing than necessary. Link: https://lore.kernel.org/r/20210121131959.646623-4-christian.brauner@ubuntu.com Cc: David Howells <dhowells@redhat.com> Cc: Al Viro <viro@zeniv.linux.org.uk> Cc: linux-fsdevel@vger.kernel.org Suggested-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Christoph Hellwig <hch@lst.de> Reviewed-by: James Morris <jamorris@linux.microsoft.com> Signed-off-by: Christian Brauner <christian.brauner@ubuntu.com>
Diffstat (limited to 'net/unix')
-rw-r--r--net/unix/af_unix.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/net/unix/af_unix.c b/net/unix/af_unix.c
index 41c3303c3357..18453d15dddf 100644
--- a/net/unix/af_unix.c
+++ b/net/unix/af_unix.c
@@ -936,7 +936,7 @@ static struct sock *unix_find_other(struct net *net,
if (err)
goto fail;
inode = d_backing_inode(path.dentry);
- err = inode_permission(inode, MAY_WRITE);
+ err = path_permission(&path, MAY_WRITE);
if (err)
goto put_fail;