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-rw-r--r--security/smack/smack_lsm.c37
1 files changed, 37 insertions, 0 deletions
diff --git a/security/smack/smack_lsm.c b/security/smack/smack_lsm.c
index de396742abf..8ad48161cef 100644
--- a/security/smack/smack_lsm.c
+++ b/security/smack/smack_lsm.c
@@ -1012,6 +1012,41 @@ static void smack_cred_commit(struct cred *new, const struct cred *old)
}
/**
+ * smack_kernel_act_as - Set the subjective context in a set of credentials
+ * @new points to the set of credentials to be modified.
+ * @secid specifies the security ID to be set
+ *
+ * Set the security data for a kernel service.
+ */
+static int smack_kernel_act_as(struct cred *new, u32 secid)
+{
+ char *smack = smack_from_secid(secid);
+
+ if (smack == NULL)
+ return -EINVAL;
+
+ new->security = smack;
+ return 0;
+}
+
+/**
+ * smack_kernel_create_files_as - Set the file creation label in a set of creds
+ * @new points to the set of credentials to be modified
+ * @inode points to the inode to use as a reference
+ *
+ * Set the file creation context in a set of credentials to the same
+ * as the objective context of the specified inode
+ */
+static int smack_kernel_create_files_as(struct cred *new,
+ struct inode *inode)
+{
+ struct inode_smack *isp = inode->i_security;
+
+ new->security = isp->smk_inode;
+ return 0;
+}
+
+/**
* smack_task_setpgid - Smack check on setting pgid
* @p: the task object
* @pgid: unused
@@ -2641,6 +2676,8 @@ struct security_operations smack_ops = {
.cred_free = smack_cred_free,
.cred_prepare = smack_cred_prepare,
.cred_commit = smack_cred_commit,
+ .kernel_act_as = smack_kernel_act_as,
+ .kernel_create_files_as = smack_kernel_create_files_as,
.task_fix_setuid = cap_task_fix_setuid,
.task_setpgid = smack_task_setpgid,
.task_getpgid = smack_task_getpgid,