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authorJim Owens <jowens@hp.com>2009-02-04 09:29:13 -0500
committerChris Mason <chris.mason@oracle.com>2009-02-04 09:29:13 -0500
commit0279b4cd86685b5eea467c1b74ce94f0add2c0a3 (patch)
tree54caafd4c6b31e2bc9861217627297c00af89066 /fs/btrfs/xattr.c
parentbef62ef339c15d7721da88958b03f7b544464722 (diff)
Btrfs: selinux support
Add call to LSM security initialization and save resulting security xattr for new inodes. Add xattr support to symlink inode ops. Set inode->i_op for existing special files. Signed-off-by: jim owens <jowens@hp.com>
Diffstat (limited to 'fs/btrfs/xattr.c')
-rw-r--r--fs/btrfs/xattr.c32
1 files changed, 32 insertions, 0 deletions
diff --git a/fs/btrfs/xattr.c b/fs/btrfs/xattr.c
index b4fa5f4b6ad1..312b9435e9f8 100644
--- a/fs/btrfs/xattr.c
+++ b/fs/btrfs/xattr.c
@@ -21,6 +21,7 @@
#include <linux/slab.h>
#include <linux/rwsem.h>
#include <linux/xattr.h>
+#include <linux/security.h>
#include "ctree.h"
#include "btrfs_inode.h"
#include "transaction.h"
@@ -330,3 +331,34 @@ int btrfs_removexattr(struct dentry *dentry, const char *name)
return -EOPNOTSUPP;
return __btrfs_setxattr(dentry->d_inode, name, NULL, 0, XATTR_REPLACE);
}
+
+int btrfs_xattr_security_init(struct inode *inode, struct inode *dir)
+{
+ int err;
+ size_t len;
+ void *value;
+ char *suffix;
+ char *name;
+
+ err = security_inode_init_security(inode, dir, &suffix, &value, &len);
+ if (err) {
+ if (err == -EOPNOTSUPP)
+ return 0;
+ return err;
+ }
+
+ name = kmalloc(XATTR_SECURITY_PREFIX_LEN + strlen(suffix) + 1,
+ GFP_NOFS);
+ if (!name) {
+ err = -ENOMEM;
+ } else {
+ strcpy(name, XATTR_SECURITY_PREFIX);
+ strcpy(name + XATTR_SECURITY_PREFIX_LEN, suffix);
+ err = __btrfs_setxattr(inode, name, value, len, 0);
+ kfree(name);
+ }
+
+ kfree(suffix);
+ kfree(value);
+ return err;
+}