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Subject[PATCH v5 13/21] evm: add evm_inode_post_init call in gfs2
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/gfs2/inode.c | 28 +++++++++++++++++++---------
1 files changed, 19 insertions(+), 9 deletions(-)
diff --git a/fs/gfs2/inode.c b/fs/gfs2/inode.c
index 97d54a2..5ce875b 100644
--- a/fs/gfs2/inode.c
+++ b/fs/gfs2/inode.c
@@ -17,6 +17,7 @@
#include <linux/gfs2_ondisk.h>
#include <linux/crc32.h>
#include <linux/security.h>
+#include <linux/evm.h>
#include <linux/time.h>

#include "gfs2.h"
@@ -767,12 +768,12 @@ static int gfs2_security_init(struct gfs2_inode *dip, struct gfs2_inode *ip,
const struct qstr *qstr)
{
int err;
- size_t len;
- void *value;
- char *name;
+ struct xattr lsm_xattr;
+ struct xattr evm_xattr;

err = security_inode_init_security(&ip->i_inode, &dip->i_inode, qstr,
- &name, &value, &len);
+ &lsm_xattr.name, &lsm_xattr.value,
+ &lsm_xattr.value_len);

if (err) {
if (err == -EOPNOTSUPP)
@@ -780,11 +781,20 @@ static int gfs2_security_init(struct gfs2_inode *dip, struct gfs2_inode *ip,
return err;
}

- err = __gfs2_xattr_set(&ip->i_inode, name, value, len, 0,
- GFS2_EATYPE_SECURITY);
- kfree(value);
- kfree(name);
-
+ err = __gfs2_xattr_set(&ip->i_inode, lsm_xattr.name, lsm_xattr.value,
+ lsm_xattr.value_len, 0, GFS2_EATYPE_SECURITY);
+ if (err < 0)
+ goto out;
+ err = evm_inode_post_init_security(&ip->i_inode, &lsm_xattr,
+ &evm_xattr);
+ if (err)
+ goto out;
+ err = __gfs2_xattr_set(&ip->i_inode, evm_xattr.name, evm_xattr.value,
+ evm_xattr.value_len, 0, GFS2_EATYPE_SECURITY);
+ kfree(evm_xattr.value);
+out:
+ kfree(lsm_xattr.name);
+ kfree(lsm_xattr.value);
return err;
}

--
1.7.3.4


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