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[PATCH] add a vfs_permission helper

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Most permission() calls have a struct nameidata * available.  This helper
takes that as an argument and thus makes sure we pass it down for lookup
intents and prepares for per-mount read-only support where we need a struct
vfsmount for checking whether a file is writeable.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
Christoph Hellwig
2005-11-08 21:35:04 -08:00
committed by Linus Torvalds
parent e4a53cbabc
commit e4543eddfd
7 changed files with 31 additions and 15 deletions
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2
net/unix/af_unix.c
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@@ -676,7 +676,7 @@ static struct sock *unix_find_other(struct sockaddr_un *sunname, int len,
err = path_lookup(sunname->sun_path, LOOKUP_FOLLOW, &nd);
if (err)
goto fail;
err = permission(nd.dentry->d_inode,MAY_WRITE, &nd);
err = vfs_permission(&nd, MAY_WRITE);
if (err)
goto put_fail;