From: Casey Schaufler <casey@schaufler-ca.com>
To: LSM <linux-security-module@vger.kernel.org>,
"James Morris" <jmorris@namei.org>,
"SE Linux" <selinux@tycho.nsa.gov>,
LKLM <linux-kernel@vger.kernel.org>,
"John Johansen" <john.johansen@canonical.com>,
"Kees Cook" <keescook@chromium.org>,
"Tetsuo Handa" <penguin-kernel@i-love.sakura.ne.jp>,
"Paul Moore" <paul@paul-moore.com>,
"Stephen Smalley" <sds@tycho.nsa.gov>,
"linux-fsdevel@vger.kernel.org" <linux-fsdevel@vger.kernel.org>,
"Alexey Dobriyan" <adobriyan@gmail.com>,
"Mickaël Salaün" <mic@digikod.net>,
"Salvatore Mesoraca" <s.mesoraca16@gmail.com>
Subject: [PATCH v4 16/19] SELinux: Abstract use of ipc security blobs
Date: Fri, 21 Sep 2018 17:19:45 -0700 [thread overview]
Message-ID: <383f1b1a-3d7c-46d2-a553-3a09f25bc1c4@schaufler-ca.com> (raw)
In-Reply-To: <e9bfb2d5-d987-55ce-4011-9b32ff745d36@schaufler-ca.com>
Don't use the ipc->security pointer directly.
Don't use the msg_msg->security pointer directly.
Provide helper functions that provides the security blob pointers.
Signed-off-by: Casey Schaufler <casey@schaufler-ca.com>
---
security/selinux/hooks.c | 18 +++++++++---------
security/selinux/include/objsec.h | 13 +++++++++++++
2 files changed, 22 insertions(+), 9 deletions(-)
diff --git a/security/selinux/hooks.c b/security/selinux/hooks.c
index 389e51ef48a5..e6cb5fce5437 100644
--- a/security/selinux/hooks.c
+++ b/security/selinux/hooks.c
@@ -5884,7 +5884,7 @@ static int ipc_has_perm(struct kern_ipc_perm *ipc_perms,
struct common_audit_data ad;
u32 sid = current_sid();
- isec = ipc_perms->security;
+ isec = selinux_ipc(ipc_perms);
ad.type = LSM_AUDIT_DATA_IPC;
ad.u.ipc_id = ipc_perms->key;
@@ -5941,7 +5941,7 @@ static int selinux_msg_queue_associate(struct kern_ipc_perm *msq, int msqflg)
struct common_audit_data ad;
u32 sid = current_sid();
- isec = msq->security;
+ isec = selinux_ipc(msq);
ad.type = LSM_AUDIT_DATA_IPC;
ad.u.ipc_id = msq->key;
@@ -5990,8 +5990,8 @@ static int selinux_msg_queue_msgsnd(struct kern_ipc_perm *msq, struct msg_msg *m
u32 sid = current_sid();
int rc;
- isec = msq->security;
- msec = msg->security;
+ isec = selinux_ipc(msq);
+ msec = selinux_msg_msg(msg);
/*
* First time through, need to assign label to the message
@@ -6038,8 +6038,8 @@ static int selinux_msg_queue_msgrcv(struct kern_ipc_perm *msq, struct msg_msg *m
u32 sid = task_sid(target);
int rc;
- isec = msq->security;
- msec = msg->security;
+ isec = selinux_ipc(msq);
+ msec = selinux_msg_msg(msg);
ad.type = LSM_AUDIT_DATA_IPC;
ad.u.ipc_id = msq->key;
@@ -6092,7 +6092,7 @@ static int selinux_shm_associate(struct kern_ipc_perm *shp, int shmflg)
struct common_audit_data ad;
u32 sid = current_sid();
- isec = shp->security;
+ isec = selinux_ipc(shp);
ad.type = LSM_AUDIT_DATA_IPC;
ad.u.ipc_id = shp->key;
@@ -6189,7 +6189,7 @@ static int selinux_sem_associate(struct kern_ipc_perm *sma, int semflg)
struct common_audit_data ad;
u32 sid = current_sid();
- isec = sma->security;
+ isec = selinux_ipc(sma);
ad.type = LSM_AUDIT_DATA_IPC;
ad.u.ipc_id = sma->key;
@@ -6275,7 +6275,7 @@ static int selinux_ipc_permission(struct kern_ipc_perm *ipcp, short flag)
static void selinux_ipc_getsecid(struct kern_ipc_perm *ipcp, u32 *secid)
{
- struct ipc_security_struct *isec = ipcp->security;
+ struct ipc_security_struct *isec = selinux_ipc(ipcp);
*secid = isec->sid;
}
diff --git a/security/selinux/include/objsec.h b/security/selinux/include/objsec.h
index 591adb374d69..5bf9f280e9b2 100644
--- a/security/selinux/include/objsec.h
+++ b/security/selinux/include/objsec.h
@@ -26,6 +26,7 @@
#include <linux/in.h>
#include <linux/spinlock.h>
#include <linux/lsm_hooks.h>
+#include <linux/msg.h>
#include <net/net_namespace.h>
#include "flask.h"
#include "avc.h"
@@ -173,4 +174,16 @@ static inline struct inode_security_struct *selinux_inode(
return inode->i_security;
}
+static inline struct msg_security_struct *selinux_msg_msg(
+ const struct msg_msg *msg_msg)
+{
+ return msg_msg->security;
+}
+
+static inline struct ipc_security_struct *selinux_ipc(
+ const struct kern_ipc_perm *ipc)
+{
+ return ipc->security;
+}
+
#endif /* _SELINUX_OBJSEC_H_ */
--
2.17.1
next prev parent reply other threads:[~2018-09-22 0:19 UTC|newest]
Thread overview: 56+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-09-21 23:59 [PATCH v4 00/19] LSM: Module stacking for SARA and Landlock Casey Schaufler
2018-09-22 0:16 ` [PATCH v4 01/19] procfs: add smack subdir to attrs Casey Schaufler
2018-09-22 0:17 ` [PATCH v4 02/19] Smack: Abstract use of cred security blob Casey Schaufler
2018-09-22 2:44 ` Kees Cook
2018-09-22 0:17 ` [PATCH v4 03/19] SELinux: " Casey Schaufler
2018-09-22 0:17 ` [PATCH v4 04/19] SELinux: Remove cred security blob poisoning Casey Schaufler
2018-09-22 2:43 ` Kees Cook
2018-09-27 22:13 ` James Morris
2018-09-27 22:32 ` Casey Schaufler
2018-09-22 0:17 ` [PATCH v4 05/19] SELinux: Remove unused selinux_is_enabled Casey Schaufler
2018-09-22 2:43 ` Kees Cook
2018-09-22 0:17 ` [PATCH v4 06/19] AppArmor: Abstract use of cred security blob Casey Schaufler
2018-09-22 2:46 ` Kees Cook
2018-09-22 0:18 ` [PATCH v4 07/19] TOMOYO: " Casey Schaufler
2018-09-22 2:47 ` Kees Cook
2018-09-22 0:18 ` [PATCH v4 08/19] Infrastructure management of the " Casey Schaufler
2018-09-22 2:50 ` Kees Cook
2018-09-22 0:18 ` [PATCH v4 09/19] SELinux: Abstract use of file " Casey Schaufler
2018-09-22 0:18 ` [PATCH v4 10/19] Smack: " Casey Schaufler
2018-09-22 2:51 ` Kees Cook
2018-09-22 0:19 ` [PATCH v4 11/19] LSM: Infrastructure management of the file security Casey Schaufler
2018-09-22 2:53 ` Kees Cook
2018-09-22 0:19 ` [PATCH v4 12/19] SELinux: Abstract use of inode security blob Casey Schaufler
2018-09-22 0:19 ` [PATCH v4 13/19] Smack: " Casey Schaufler
2018-09-22 0:19 ` [PATCH v4 14/19] LSM: Infrastructure management of the inode security Casey Schaufler
2018-09-22 2:55 ` Kees Cook
2018-10-03 18:13 ` James Morris
2018-10-04 4:49 ` Casey Schaufler
2018-09-22 0:19 ` [PATCH v4 15/19] LSM: Infrastructure management of the task security Casey Schaufler
2018-09-22 2:56 ` Kees Cook
2018-09-22 0:19 ` Casey Schaufler [this message]
2018-09-22 2:56 ` [PATCH v4 16/19] SELinux: Abstract use of ipc security blobs Kees Cook
2018-09-22 0:19 ` [PATCH v4 17/19] Smack: " Casey Schaufler
2018-09-22 2:57 ` Kees Cook
2018-09-22 0:20 ` [PATCH v4 18/19] LSM: Infrastructure management of the ipc security blob Casey Schaufler
2018-09-22 2:58 ` Kees Cook
2018-09-22 0:20 ` [PATCH v4 19/19] LSM: Blob sharing support for S.A.R.A and LandLock Casey Schaufler
2018-09-22 0:22 ` [PATCH v4 09/19] SELinux: Abstract use of file security blob Casey Schaufler
2018-09-22 3:02 ` [PATCH v4 00/19] LSM: Module stacking for SARA and Landlock Kees Cook
2018-09-22 16:38 ` Casey Schaufler
2018-09-23 2:43 ` Kees Cook
2018-09-23 15:59 ` Tetsuo Handa
2018-09-23 17:09 ` Casey Schaufler
2018-09-24 1:53 ` Tetsuo Handa
2018-09-24 17:16 ` Casey Schaufler
2018-09-24 17:53 ` Tetsuo Handa
2018-09-24 20:33 ` Casey Schaufler
2018-09-24 15:01 ` Stephen Smalley
2018-09-24 16:15 ` Casey Schaufler
2018-09-24 17:22 ` Tetsuo Handa
2018-10-01 17:58 ` James Morris
2018-09-26 21:57 ` [PATCH v4 20/19] LSM: Correct file blob free empty blob check Casey Schaufler
2018-10-01 20:29 ` Kees Cook
2018-09-26 21:57 ` [PATCH 21/19] LSM: Cleanup and fixes from Tetsuo Handa Casey Schaufler
2018-10-01 21:48 ` Kees Cook
2018-10-12 20:07 ` Kees Cook
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