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authorAl Viro <viro@zeniv.linux.org.uk>2011-06-21 03:06:22 +0400
committerAl Viro <viro@zeniv.linux.org.uk>2011-07-20 09:43:19 +0400
commit9c2c703929e4c41210cfa6e3f599514421bab8dc (patch)
tree2086738f22755ad18ba18ab2ee0f2b23d651da60 /fs/namei.c
parent1fc0f78ca9f311c6277e2f1b7655bb4d43ceb311 (diff)
downloadlinux-9c2c703929e4c41210cfa6e3f599514421bab8dc.tar.xz
->permission() sanitizing: pass MAY_NOT_BLOCK to ->check_acl()
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'fs/namei.c')
-rw-r--r--fs/namei.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/fs/namei.c b/fs/namei.c
index 723a3fe4bc40..e0624e2f0bba 100644
--- a/fs/namei.c
+++ b/fs/namei.c
@@ -181,7 +181,7 @@ static int acl_permission_check(struct inode *inode, int mask, unsigned int flag
int (*check_acl)(struct inode *inode, int mask, unsigned int flags);
unsigned int mode = inode->i_mode;
- mask &= MAY_READ | MAY_WRITE | MAY_EXEC;
+ mask &= MAY_READ | MAY_WRITE | MAY_EXEC | MAY_NOT_BLOCK;
if (current_user_ns() != inode_userns(inode))
goto other_perms;
@@ -204,7 +204,7 @@ other_perms:
/*
* If the DACs are ok we don't need any capability check.
*/
- if ((mask & ~mode) == 0)
+ if ((mask & ~mode & (MAY_READ | MAY_WRITE | MAY_EXEC)) == 0)
return 0;
return -EACCES;
}