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authorMiklos Szeredi <miklos@szeredi.hu>2008-07-31 07:41:58 -0400
committerAl Viro <viro@zeniv.linux.org.uk>2008-10-23 05:13:25 -0400
commitf696a3659fc4b3a3bf4bc83d9dbec5e5a2ffd929 (patch)
tree738adf557608f26e881a710839de12b7527549b6 /include/linux/fs.h
parent5cec56deb6d41b5b570306b17cd0b1590ebd0897 (diff)
[PATCH] move executable checking into ->permission()
For execute permission on a regular files we need to check if file has any execute bits at all, regardless of capabilites. This check is normally performed by generic_permission() but was also added to the case when the filesystem defines its own ->permission() method. In the latter case the filesystem should be responsible for performing this check. Move the check from inode_permission() inside filesystems which are not calling generic_permission(). Create a helper function execute_ok() that returns true if the inode is a directory or if any execute bits are present in i_mode. Also fix up the following code: - coda control file is never executable - sysctl files are never executable - hfs_permission seems broken on MAY_EXEC, remove - hfsplus_permission is eqivalent to generic_permission(), remove Signed-off-by: Miklos Szeredi <mszeredi@suse.cz>
Diffstat (limited to 'include/linux/fs.h')
-rw-r--r--include/linux/fs.h5
1 files changed, 5 insertions, 0 deletions
diff --git a/include/linux/fs.h b/include/linux/fs.h
index 5f70aa62cf0f..025a4a251b64 100644
--- a/include/linux/fs.h
+++ b/include/linux/fs.h
@@ -1851,6 +1851,11 @@ extern int inode_permission(struct inode *, int);
1851extern int generic_permission(struct inode *, int, 1851extern int generic_permission(struct inode *, int,
1852 int (*check_acl)(struct inode *, int)); 1852 int (*check_acl)(struct inode *, int));
1853 1853
1854static inline bool execute_ok(struct inode *inode)
1855{
1856 return (inode->i_mode & S_IXUGO) || S_ISDIR(inode->i_mode);
1857}
1858
1854extern int get_write_access(struct inode *); 1859extern int get_write_access(struct inode *);
1855extern int deny_write_access(struct file *); 1860extern int deny_write_access(struct file *);
1856static inline void put_write_access(struct inode * inode) 1861static inline void put_write_access(struct inode * inode)