kernel.git/fs/xattr.c, branch linux-2.6.37.y

fs: xattr_handler table should be const

2010-05-21T22:31:18Z

The entries in xattr handler table should be immutable (ie const) like other operation tables. Later patches convert common filesystems. Uncoverted filesystems will still work, but will generate a compiler warning. Signed-off-by: Stephen Hemminger Signed-off-by: Al Viro

sanitize xattr handler prototypes

2009-12-16T17:16:49Z

Add a flags argument to struct xattr_handler and pass it to all xattr handler methods. This allows using the same methods for multiple handlers, e.g. for the ACL methods which perform exactly the same action for the access and default ACLs, just using a different underlying attribute. With a little more groundwork it'll also allow sharing the methods for the regular user/trusted/secure handlers in extN, ocfs2 and jffs2 like it's already done for xfs in this patch. Also change the inode argument to the handlers to a dentry to allow using the handlers mechnism for filesystems that require it later, e.g. cifs. [with GFS2 bits updated by Steven Whitehouse ] Signed-off-by: Christoph Hellwig Reviewed-by: James Morris Acked-by: Joel Becker Signed-off-by: Al Viro

VFS: Factor out part of vfs_setxattr so it can be called from the SELinux hook for inode_setsecctx.

2009-09-10T00:11:22Z

This factors out the part of the vfs_setxattr function that performs the setting of the xattr and its notification. This is needed so the SELinux implementation of inode_setsecctx can handle the setting of the xattr while maintaining the proper separation of layers. Signed-off-by: David P. Quigley Acked-by: Serge Hallyn Signed-off-by: James Morris

fs: introduce mnt_clone_write

2009-06-12T01:36:02Z

This patch speeds up lmbench lat_mmap test by about another 2% after the first patch. Before: avg = 462.286 std = 5.46106 After: avg = 453.12 std = 9.58257 (50 runs of each, stddev gives a reasonable confidence) It does this by introducing mnt_clone_write, which avoids some heavyweight operations of mnt_want_write if called on a vfsmount which we know already has a write count; and mnt_want_write_file, which can call mnt_clone_write if the file is open for write. After these two patches, mnt_want_write and mnt_drop_write go from 7% on the profile down to 1.3% (including mnt_clone_write). [AV: mnt_want_write_file() should take file alone and derive mnt from it; not only all callers have that form, but that's the only mnt about which we know that it's already held for write if file is opened for write] Cc: Dave Hansen Signed-off-by: Nick Piggin Signed-off-by: Al Viro

xattr: use memdup_user()

2009-04-21T03:02:50Z

Remove open-coded memdup_user() Signed-off-by: Li Zefan Signed-off-by: Al Viro

[CVE-2009-0029] System call wrappers part 13

2009-01-14T13:15:23Z

Signed-off-by: Heiko Carstens

[CVE-2009-0029] System call wrappers part 12

2009-01-14T13:15:23Z

Signed-off-by: Heiko Carstens

[CVE-2009-0029] Convert all system calls to return a long

2009-01-14T13:15:14Z

Convert all system calls to return a long. This should be a NOP since all converted types should have the same size anyway. With the exception of sys_exit_group which returned void. But that doesn't matter since the system call doesn't return. Signed-off-by: Heiko Carstens

inode->i_op is never NULL

2009-01-05T16:54:28Z

We used to have rather schizophrenic set of checks for NULL ->i_op even though it had been eliminated years ago. You'd need to go out of your way to set it to NULL explicitly _and_ a bunch of code would die on such inodes anyway. After killing two remaining places that still did that bogosity, all that crap can go away. Signed-off-by: Al Viro

[PATCH] sanitize __user_walk_fd() et.al.

2008-07-27T00:53:34Z

* do not pass nameidata; struct path is all the callers want. * switch to new helpers: user_path_at(dfd, pathname, flags, &path) user_path(pathname, &path) user_lpath(pathname, &path) user_path_dir(pathname, &path) (fail if not a directory) The last 3 are trivial macro wrappers for the first one. * remove nameidata in callers. Signed-off-by: Al Viro