[PATCH] add a file_permission helper

A few more callers of permission() just want to check for a different access
pattern on an already open file.  This patch adds a wrapper for permission()
that takes a file in preparation of per-mount read-only support and to clean
up the callers a little.  The helper is not intended for new code, everything
without the interface set in stone should use vfs_permission()

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

1 files changed, 5 insertions, 0 deletions

diff --git a/include/linux/fs.h b/include/linux/fs.h
index c3b8c1dc7cdf..cc35b6ac778d 100644
--- a/include/linux/fs.h
+++ b/include/linux/fs.h
@@ -890,6 +890,11 @@ extern int vfs_rename(struct inode *, struct dentry *, struct inode *, struct de
 extern void dentry_unhash(struct dentry *dentry);
 
 /*
+ * VFS file helper functions.
+ */
+extern int file_permission(struct file *, int);
+
+/*
  * File types
  *
  * NOTE! These match bits 12..15 of stat.st_mode