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authorMimi Zohar <zohar@linux.vnet.ibm.com>2011-06-06 15:29:25 -0400
committerMimi Zohar <zohar@linux.vnet.ibm.com>2011-07-18 12:29:38 -0400
commit9d8f13ba3f4833219e50767b022b82cd0da930eb (patch)
tree3ba2367380d009111ea17696162a62320c88d144 /fs/jffs2
parent0f2a55d5bb2372058275b0b343d90dd5d640d045 (diff)
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 <zohar@us.ibm.com>
Diffstat (limited to 'fs/jffs2')
-rw-r--r--fs/jffs2/security.c35
1 files changed, 19 insertions, 16 deletions
diff --git a/fs/jffs2/security.c b/fs/jffs2/security.c
index cfeb7164b085..0f20208df602 100644
--- a/fs/jffs2/security.c
+++ b/fs/jffs2/security.c
@@ -22,26 +22,29 @@
#include <linux/security.h>
#include "nodelist.h"
-/* ---- Initial Security Label Attachment -------------- */
-int jffs2_init_security(struct inode *inode, struct inode *dir,
- const struct qstr *qstr)
+/* ---- Initial Security Label(s) Attachment callback --- */
+int jffs2_initxattrs(struct inode *inode, const struct xattr *xattr_array,
+ void *fs_info)
{
- int rc;
- size_t len;
- void *value;
- char *name;
+ const struct xattr *xattr;
+ int err = 0;
- rc = security_inode_init_security(inode, dir, qstr, &name, &value, &len);
- if (rc) {
- if (rc == -EOPNOTSUPP)
- return 0;
- return rc;
+ for (xattr = xattr_array; xattr->name != NULL; xattr++) {
+ err = do_jffs2_setxattr(inode, JFFS2_XPREFIX_SECURITY,
+ xattr->name, xattr->value,
+ xattr->value_len, 0);
+ if (err < 0)
+ break;
}
- rc = do_jffs2_setxattr(inode, JFFS2_XPREFIX_SECURITY, name, value, len, 0);
+ return err;
+}
- kfree(name);
- kfree(value);
- return rc;
+/* ---- Initial Security Label(s) Attachment ----------- */
+int jffs2_init_security(struct inode *inode, struct inode *dir,
+ const struct qstr *qstr)
+{
+ return security_inode_init_security(inode, dir, qstr,
+ &jffs2_initxattrs, NULL);
}
/* ---- XATTR Handler for "security.*" ----------------- */