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authorThomas Gleixner <tglx@linutronix.de>2017-10-12 11:02:50 +0200
committerThomas Gleixner <tglx@linutronix.de>2017-10-12 11:02:50 +0200
commit331b57d14829c49d75076779cdc54d7e4537bbf0 (patch)
tree79a70eadb04ed2fd65d3280021ec6ad5266d1cc1 /security/smack/smack_lsm.c
parent79761ce80aa0232157e428bde28c0cef6d43ac5f (diff)
parente43b3b58548051f8809391eb7bec7a27ed3003ea (diff)
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Merge branch 'irq/urgent' into x86/apic
Pick up core changes which affect the vector rework.
Diffstat (limited to 'security/smack/smack_lsm.c')
-rw-r--r--security/smack/smack_lsm.c55
1 files changed, 25 insertions, 30 deletions
diff --git a/security/smack/smack_lsm.c b/security/smack/smack_lsm.c
index 319add31b4a4..286171a16ed2 100644
--- a/security/smack/smack_lsm.c
+++ b/security/smack/smack_lsm.c
@@ -1473,7 +1473,7 @@ static int smack_inode_removexattr(struct dentry *dentry, const char *name)
* @inode: the object
* @name: attribute name
* @buffer: where to put the result
- * @alloc: unused
+ * @alloc: duplicate memory
*
* Returns the size of the attribute or an error code
*/
@@ -1486,43 +1486,38 @@ static int smack_inode_getsecurity(struct inode *inode,
struct super_block *sbp;
struct inode *ip = (struct inode *)inode;
struct smack_known *isp;
- int ilen;
- int rc = 0;
- if (strcmp(name, XATTR_SMACK_SUFFIX) == 0) {
+ if (strcmp(name, XATTR_SMACK_SUFFIX) == 0)
isp = smk_of_inode(inode);
- ilen = strlen(isp->smk_known);
- *buffer = isp->smk_known;
- return ilen;
- }
+ else {
+ /*
+ * The rest of the Smack xattrs are only on sockets.
+ */
+ sbp = ip->i_sb;
+ if (sbp->s_magic != SOCKFS_MAGIC)
+ return -EOPNOTSUPP;
- /*
- * The rest of the Smack xattrs are only on sockets.
- */
- sbp = ip->i_sb;
- if (sbp->s_magic != SOCKFS_MAGIC)
- return -EOPNOTSUPP;
+ sock = SOCKET_I(ip);
+ if (sock == NULL || sock->sk == NULL)
+ return -EOPNOTSUPP;
- sock = SOCKET_I(ip);
- if (sock == NULL || sock->sk == NULL)
- return -EOPNOTSUPP;
-
- ssp = sock->sk->sk_security;
+ ssp = sock->sk->sk_security;
- if (strcmp(name, XATTR_SMACK_IPIN) == 0)
- isp = ssp->smk_in;
- else if (strcmp(name, XATTR_SMACK_IPOUT) == 0)
- isp = ssp->smk_out;
- else
- return -EOPNOTSUPP;
+ if (strcmp(name, XATTR_SMACK_IPIN) == 0)
+ isp = ssp->smk_in;
+ else if (strcmp(name, XATTR_SMACK_IPOUT) == 0)
+ isp = ssp->smk_out;
+ else
+ return -EOPNOTSUPP;
+ }
- ilen = strlen(isp->smk_known);
- if (rc == 0) {
- *buffer = isp->smk_known;
- rc = ilen;
+ if (alloc) {
+ *buffer = kstrdup(isp->smk_known, GFP_KERNEL);
+ if (*buffer == NULL)
+ return -ENOMEM;
}
- return rc;
+ return strlen(isp->smk_known);
}