From 9d8f13ba3f4833219e50767b022b82cd0da930eb Mon Sep 17 00:00:00 2001 From: Mimi Zohar Date: Mon, 6 Jun 2011 15:29:25 -0400 Subject: security: new security_inode_init_security API adds function callback This patch changes the security_inode_init_security API by adding a filesystem specific callback to write security extended attributes. This change is in preparation for supporting the initialization of multiple LSM xattrs and the EVM xattr. Initially the callback function walks an array of xattrs, writing each xattr separately, but could be optimized to write multiple xattrs at once. For existing security_inode_init_security() calls, which have not yet been converted to use the new callback function, such as those in reiserfs and ocfs2, this patch defines security_old_inode_init_security(). Signed-off-by: Mimi Zohar --- fs/xfs/linux-2.6/xfs_iops.c | 39 ++++++++++++++++++++------------------- 1 file changed, 20 insertions(+), 19 deletions(-) (limited to 'fs/xfs') diff --git a/fs/xfs/linux-2.6/xfs_iops.c b/fs/xfs/linux-2.6/xfs_iops.c index d44d92cd12b1..27a3658b830f 100644 --- a/fs/xfs/linux-2.6/xfs_iops.c +++ b/fs/xfs/linux-2.6/xfs_iops.c @@ -93,37 +93,38 @@ xfs_mark_inode_dirty( mark_inode_dirty(inode); } + +int xfs_initxattrs(struct inode *inode, const struct xattr *xattr_array, + void *fs_info) +{ + const struct xattr *xattr; + struct xfs_inode *ip = XFS_I(inode); + int error = 0; + + for (xattr = xattr_array; xattr->name != NULL; xattr++) { + error = xfs_attr_set(ip, xattr->name, xattr->value, + xattr->value_len, ATTR_SECURE); + if (error < 0) + break; + } + return error; +} + /* * Hook in SELinux. This is not quite correct yet, what we really need * here (as we do for default ACLs) is a mechanism by which creation of * these attrs can be journalled at inode creation time (along with the * inode, of course, such that log replay can't cause these to be lost). */ + STATIC int xfs_init_security( struct inode *inode, struct inode *dir, const struct qstr *qstr) { - struct xfs_inode *ip = XFS_I(inode); - size_t length; - void *value; - unsigned char *name; - int error; - - error = security_inode_init_security(inode, dir, qstr, (char **)&name, - &value, &length); - if (error) { - if (error == -EOPNOTSUPP) - return 0; - return -error; - } - - error = xfs_attr_set(ip, name, value, length, ATTR_SECURE); - - kfree(name); - kfree(value); - return error; + return security_inode_init_security(inode, dir, qstr, + &xfs_initxattrs, NULL); } static void -- cgit v1.2.3