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Subject[PATCH v5 15/21] evm: add evm_inode_post_init call in jfs
Date
After creating the initial LSM security extended attribute, call
evm_inode_post_init_security() to create the 'security.evm'
extended attribute.

Signed-off-by: Mimi Zohar <zohar@us.ibm.com>
---
fs/jfs/xattr.c | 45 +++++++++++++++++++++++++++++++--------------
1 files changed, 31 insertions(+), 14 deletions(-)
diff --git a/fs/jfs/xattr.c b/fs/jfs/xattr.c
index 24838f1..68b4ec6 100644
--- a/fs/jfs/xattr.c
+++ b/fs/jfs/xattr.c
@@ -24,6 +24,7 @@
#include <linux/slab.h>
#include <linux/quotaops.h>
#include <linux/security.h>
+#include <linux/evm.h>
#include "jfs_incore.h"
#include "jfs_superblock.h"
#include "jfs_dmap.h"
@@ -1095,33 +1096,49 @@ int jfs_init_security(tid_t tid, struct inode *inode, struct inode *dir,
const struct qstr *qstr)
{
int rc;
- size_t len;
- void *value;
- char *suffix;
+ struct xattr lsm_xattr;
+ struct xattr evm_xattr;
char *name;

- rc = security_inode_init_security(inode, dir, qstr, &suffix, &value,
- &len);
+ rc = security_inode_init_security(inode, dir, qstr, &lsm_xattr.name,
+ &lsm_xattr.value,
+ &lsm_xattr.value_len);
if (rc) {
if (rc == -EOPNOTSUPP)
return 0;
return rc;
}
- name = kmalloc(XATTR_SECURITY_PREFIX_LEN + 1 + strlen(suffix),
+ name = kmalloc(XATTR_SECURITY_PREFIX_LEN + 1 + strlen(lsm_xattr.name),
GFP_NOFS);
if (!name) {
rc = -ENOMEM;
- goto kmalloc_failed;
- }
- strcpy(name, XATTR_SECURITY_PREFIX);
- strcpy(name + XATTR_SECURITY_PREFIX_LEN, suffix);
+ } else {
+ strcpy(name, XATTR_SECURITY_PREFIX);
+ strcpy(name + XATTR_SECURITY_PREFIX_LEN, lsm_xattr.name);

- rc = __jfs_setxattr(tid, inode, name, value, len, 0);
+ rc = __jfs_setxattr(tid, inode, name, lsm_xattr.value,
+ lsm_xattr.value_len, 0);
+ kfree(name);
+ }
+ if (rc)
+ goto kmalloc_failed;

- kfree(name);
+ rc = evm_inode_post_init_security(inode, &lsm_xattr, &evm_xattr);
+ if (rc)
+ goto kmalloc_failed;
+ name = kasprintf(GFP_NOFS, "%s%s", XATTR_SECURITY_PREFIX,
+ evm_xattr.name);
+ if (!name) {
+ rc = -ENOMEM;
+ } else {
+ rc = __jfs_setxattr(tid, inode, name, evm_xattr.value,
+ evm_xattr.value_len, 0);
+ kfree(name);
+ }
+ kfree(evm_xattr.value);
kmalloc_failed:
- kfree(suffix);
- kfree(value);
+ kfree(lsm_xattr.name);
+ kfree(lsm_xattr.value);

return rc;
}
--
1.7.3.4


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