kernel: smack security backport from kernel 4

Here is the backport of all patches relating to smack support
on kernel side. For more details, see file:

  meta-rcar-gen2/recipes-kernel/linux/linux-renesas/smack/README

Please note that patches are applied only if "smack" is in the
ditro features. Here are the 2 lines to add in the local.conf

OVERRIDES .= ":smack"
DISTRO_FEATURES_append = " smack"

Change-Id: I147a3532aec531f977d6ec34c576261835711f1e
Signed-off-by: Yannick GICQUEL <yannick.gicquel@iot.bzh>
Signed-off-by: José Bollo <jose.bollo@iot.bzh>

1 files changed, 62 insertions, 0 deletions

diff --git a/meta-rcar-gen2/recipes-kernel/linux/linux-renesas/smack/0045-smack-miscellaneous-small-fixes-in-function-comments.patch b/meta-rcar-gen2/recipes-kernel/linux/linux-renesas/smack/0045-smack-miscellaneous-small-fixes-in-function-comments.patch
new file mode 100644
index 0000000..317707f
--- /dev/null
+++ b/meta-rcar-gen2/recipes-kernel/linux/linux-renesas/smack/0045-smack-miscellaneous-small-fixes-in-function-comments.patch
@@ -0,0 +1,62 @@
+From 72b47845b28439881d4db37b13eb97dccdc50e0f Mon Sep 17 00:00:00 2001
+From: Lukasz Pawelczyk <l.pawelczyk@samsung.com>
+Date: Wed, 26 Nov 2014 15:31:06 +0100
+Subject: [PATCH 45/54] smack: miscellaneous small fixes in function comments
+
+Signed-off-by: Lukasz Pawelczyk <l.pawelczyk@samsung.com>
+---
+ security/smack/smack_lsm.c | 14 +++++++++-----
+ 1 file changed, 9 insertions(+), 5 deletions(-)
+
+diff --git a/security/smack/smack_lsm.c b/security/smack/smack_lsm.c
+index b3978ea..eacd7fc 100644
+--- a/security/smack/smack_lsm.c
++++ b/security/smack/smack_lsm.c
+@@ -202,6 +202,7 @@ static int smk_bu_credfile(const struct cred *cred, struct file *file,
+ 
+ /**
+  * smk_fetch - Fetch the smack label from a file.
++ * @name: type of the label (attribute)
+  * @ip: a pointer to the inode
+  * @dp: a pointer to the dentry
+  *
+@@ -254,7 +255,9 @@ struct inode_smack *new_inode_smack(struct smack_known *skp)
+ 
+ /**
+  * new_task_smack - allocate a task security blob
+- * @smack: a pointer to the Smack label to use in the blob
++ * @task: a pointer to the Smack label for the running task
++ * @forked: a pointer to the Smack label for the forked task
++ * @gfp: type of the memory for the allocation
+  *
+  * Returns the new blob or NULL if there's no memory available
+  */
+@@ -277,8 +280,9 @@ static struct task_smack *new_task_smack(struct smack_known *task,
+ 
+ /**
+  * smk_copy_rules - copy a rule set
+- * @nhead - new rules header pointer
+- * @ohead - old rules header pointer
++ * @nhead: new rules header pointer
++ * @ohead: old rules header pointer
++ * @gfp: type of the memory for the allocation
+  *
+  * Returns 0 on success, -ENOMEM on error
+  */
+@@ -3836,11 +3840,11 @@ static void smack_key_free(struct key *key)
+ 	key->security = NULL;
+ }
+ 
+-/*
++/**
+  * smack_key_permission - Smack access on a key
+  * @key_ref: gets to the object
+  * @cred: the credentials to use
+- * @perm: unused
++ * @perm: requested key permissions
+  *
+  * Return 0 if the task has read and write to the object,
+  * an error code otherwise
+-- 
+2.1.4
+