From: ebiederm@xmission.com (Eric W. Biederman)
To: Linux Containers <containers@lists.linux-foundation.org>
Cc: esyr@redhat.com, jannh@google.com, khlebnikov@yandex-team.ru,
linux-api@vger.kernel.org, serge.hallyn@ubuntu.com,
linux-kernel@vger.kernel.org, prakash.sangappa@oracle.com,
linux-security-module@vger.kernel.org, luto@kernel.org,
oleg@redhat.com, akpm@linux-foundation.org,
Nagarathnam Muthusamy <nagarathnam.muthusamy@oracle.com>,
Pavel Emelyanov <xemul@openvz.org>
Subject: [REVIEW][PATCH 13/11] ipc/smack: Tidy up from the change in type of the ipc security hooks
Date: Sat, 24 Mar 2018 00:42:01 -0500 [thread overview]
Message-ID: <87y3iikp1y.fsf_-_@xmission.com> (raw)
In-Reply-To: <87vadmobdw.fsf_-_@xmission.com> (Eric W. Biederman's message of "Fri, 23 Mar 2018 14:11:23 -0500")
Rename the variables shp, sma, msq to isp. As that is how the code already
refers to those variables.
Collapse smack_of_shm, smack_of_sem, and smack_of_msq into smack_of_ipc,
as the three functions had become completely identical.
Collapse smack_shm_alloc_security, smack_sem_alloc_security and
smack_msg_queue_alloc_security into smack_ipc_alloc_security as the
three functions had become identical.
Collapse smack_shm_free_security, smack_sem_free_security and
smack_msg_queue_free_security into smack_ipc_free_security as the three
functions had become identical.
Requested-by: Casey Schaufler <casey@schaufler-ca.com>
Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
---
security/smack/smack_lsm.c | 197 +++++++++++++--------------------------------
1 file changed, 58 insertions(+), 139 deletions(-)
diff --git a/security/smack/smack_lsm.c b/security/smack/smack_lsm.c
index d960c2ea8d79..0735b8db158b 100644
--- a/security/smack/smack_lsm.c
+++ b/security/smack/smack_lsm.c
@@ -2945,25 +2945,24 @@ static void smack_msg_msg_free_security(struct msg_msg *msg)
}
/**
- * smack_of_shm - the smack pointer for the shm
- * @shp: the object
+ * smack_of_ipc - the smack pointer for the ipc
+ * @isp: the object
*
* Returns a pointer to the smack value
*/
-static struct smack_known *smack_of_shm(struct kern_ipc_perm *shp)
+static struct smack_known *smack_of_ipc(struct kern_ipc_perm *isp)
{
- return (struct smack_known *)shp->security;
+ return (struct smack_known *)isp->security;
}
/**
- * smack_shm_alloc_security - Set the security blob for shm
- * @shp: the object
+ * smack_ipc_alloc_security - Set the security blob for ipc
+ * @isp: the object
*
* Returns 0
*/
-static int smack_shm_alloc_security(struct kern_ipc_perm *shp)
+static int smack_ipc_alloc_security(struct kern_ipc_perm *isp)
{
- struct kern_ipc_perm *isp = shp;
struct smack_known *skp = smk_of_current();
isp->security = skp;
@@ -2971,34 +2970,32 @@ static int smack_shm_alloc_security(struct kern_ipc_perm *shp)
}
/**
- * smack_shm_free_security - Clear the security blob for shm
- * @shp: the object
+ * smack_ipc_free_security - Clear the security blob for ipc
+ * @isp: the object
*
* Clears the blob pointer
*/
-static void smack_shm_free_security(struct kern_ipc_perm *shp)
+static void smack_ipc_free_security(struct kern_ipc_perm *isp)
{
- struct kern_ipc_perm *isp = shp;
-
isp->security = NULL;
}
/**
* smk_curacc_shm : check if current has access on shm
- * @shp : the object
+ * @isp : the object
* @access : access requested
*
* Returns 0 if current has the requested access, error code otherwise
*/
-static int smk_curacc_shm(struct kern_ipc_perm *shp, int access)
+static int smk_curacc_shm(struct kern_ipc_perm *isp, int access)
{
- struct smack_known *ssp = smack_of_shm(shp);
+ struct smack_known *ssp = smack_of_ipc(isp);
struct smk_audit_info ad;
int rc;
#ifdef CONFIG_AUDIT
smk_ad_init(&ad, __func__, LSM_AUDIT_DATA_IPC);
- ad.a.u.ipc_id = shp->id;
+ ad.a.u.ipc_id = isp->id;
#endif
rc = smk_curacc(ssp, access, &ad);
rc = smk_bu_current("shm", ssp, access, rc);
@@ -3007,27 +3004,27 @@ static int smk_curacc_shm(struct kern_ipc_perm *shp, int access)
/**
* smack_shm_associate - Smack access check for shm
- * @shp: the object
+ * @isp: the object
* @shmflg: access requested
*
* Returns 0 if current has the requested access, error code otherwise
*/
-static int smack_shm_associate(struct kern_ipc_perm *shp, int shmflg)
+static int smack_shm_associate(struct kern_ipc_perm *isp, int shmflg)
{
int may;
may = smack_flags_to_may(shmflg);
- return smk_curacc_shm(shp, may);
+ return smk_curacc_shm(isp, may);
}
/**
* smack_shm_shmctl - Smack access check for shm
- * @shp: the object
+ * @isp: the object
* @cmd: what it wants to do
*
* Returns 0 if current has the requested access, error code otherwise
*/
-static int smack_shm_shmctl(struct kern_ipc_perm *shp, int cmd)
+static int smack_shm_shmctl(struct kern_ipc_perm *isp, int cmd)
{
int may;
@@ -3051,81 +3048,42 @@ static int smack_shm_shmctl(struct kern_ipc_perm *shp, int cmd)
default:
return -EINVAL;
}
- return smk_curacc_shm(shp, may);
+ return smk_curacc_shm(isp, may);
}
/**
* smack_shm_shmat - Smack access for shmat
- * @shp: the object
+ * @isp: the object
* @shmaddr: unused
* @shmflg: access requested
*
* Returns 0 if current has the requested access, error code otherwise
*/
-static int smack_shm_shmat(struct kern_ipc_perm *shp, char __user *shmaddr,
+static int smack_shm_shmat(struct kern_ipc_perm *ipc, char __user *shmaddr,
int shmflg)
{
int may;
may = smack_flags_to_may(shmflg);
- return smk_curacc_shm(shp, may);
-}
-
-/**
- * smack_of_sem - the smack pointer for the sem
- * @sma: the object
- *
- * Returns a pointer to the smack value
- */
-static struct smack_known *smack_of_sem(struct kern_ipc_perm *sma)
-{
- return (struct smack_known *)sma->security;
-}
-
-/**
- * smack_sem_alloc_security - Set the security blob for sem
- * @sma: the object
- *
- * Returns 0
- */
-static int smack_sem_alloc_security(struct kern_ipc_perm *sma)
-{
- struct kern_ipc_perm *isp = sma;
- struct smack_known *skp = smk_of_current();
-
- isp->security = skp;
- return 0;
-}
-
-/**
- * smack_sem_free_security - Clear the security blob for sem
- * @sma: the object
- *
- * Clears the blob pointer
- */
-static void smack_sem_free_security(struct kern_ipc_perm *sma)
-{
- struct kern_ipc_perm *isp = sma;
-
- isp->security = NULL;
+ return smk_curacc_shm(ipc, may);
}
/**
* smk_curacc_sem : check if current has access on sem
- * @sma : the object
+ * @isp : the object
* @access : access requested
*
* Returns 0 if current has the requested access, error code otherwise
*/
-static int smk_curacc_sem(struct kern_ipc_perm *sma, int access)
+static int smk_curacc_sem(struct kern_ipc_perm *isp, int access)
{
- struct smack_known *ssp = smack_of_sem(sma);
+ struct smack_known *ssp = smack_of_ipc(isp);
struct smk_audit_info ad;
int rc;
#ifdef CONFIG_AUDIT
smk_ad_init(&ad, __func__, LSM_AUDIT_DATA_IPC);
- ad.a.u.ipc_id = sma->id;
+ ad.a.u.ipc_id = isp->id;
#endif
rc = smk_curacc(ssp, access, &ad);
rc = smk_bu_current("sem", ssp, access, rc);
@@ -3134,27 +3092,27 @@ static int smk_curacc_sem(struct kern_ipc_perm *sma, int access)
/**
* smack_sem_associate - Smack access check for sem
- * @sma: the object
+ * @isp: the object
* @semflg: access requested
*
* Returns 0 if current has the requested access, error code otherwise
*/
-static int smack_sem_associate(struct kern_ipc_perm *sma, int semflg)
+static int smack_sem_associate(struct kern_ipc_perm *isp, int semflg)
{
int may;
may = smack_flags_to_may(semflg);
- return smk_curacc_sem(sma, may);
+ return smk_curacc_sem(isp, may);
}
/**
* smack_sem_shmctl - Smack access check for sem
- * @sma: the object
+ * @isp: the object
* @cmd: what it wants to do
*
* Returns 0 if current has the requested access, error code otherwise
*/
-static int smack_sem_semctl(struct kern_ipc_perm *sma, int cmd)
+static int smack_sem_semctl(struct kern_ipc_perm *isp, int cmd)
{
int may;
@@ -3184,12 +3142,12 @@ static int smack_sem_semctl(struct kern_ipc_perm *sma, int cmd)
return -EINVAL;
}
- return smk_curacc_sem(sma, may);
+ return smk_curacc_sem(isp, may);
}
/**
* smack_sem_semop - Smack checks of semaphore operations
- * @sma: the object
+ * @isp: the object
* @sops: unused
* @nsops: unused
* @alter: unused
@@ -3198,67 +3156,28 @@ static int smack_sem_semctl(struct kern_ipc_perm *sma, int cmd)
*
* Returns 0 if access is allowed, error code otherwise
*/
-static int smack_sem_semop(struct kern_ipc_perm *sma, struct sembuf *sops,
+static int smack_sem_semop(struct kern_ipc_perm *isp, struct sembuf *sops,
unsigned nsops, int alter)
{
- return smk_curacc_sem(sma, MAY_READWRITE);
-}
-
-/**
- * smack_msg_alloc_security - Set the security blob for msg
- * @msq: the object
- *
- * Returns 0
- */
-static int smack_msg_queue_alloc_security(struct kern_ipc_perm *msq)
-{
- struct kern_ipc_perm *kisp = msq;
- struct smack_known *skp = smk_of_current();
-
- kisp->security = skp;
- return 0;
-}
-
-/**
- * smack_msg_free_security - Clear the security blob for msg
- * @msq: the object
- *
- * Clears the blob pointer
- */
-static void smack_msg_queue_free_security(struct kern_ipc_perm *msq)
-{
- struct kern_ipc_perm *kisp = msq;
-
- kisp->security = NULL;
-}
-
-/**
- * smack_of_msq - the smack pointer for the msq
- * @msq: the object
- *
- * Returns a pointer to the smack label entry
- */
-static struct smack_known *smack_of_msq(struct kern_ipc_perm *msq)
-{
- return (struct smack_known *)msq->security;
+ return smk_curacc_sem(isp, MAY_READWRITE);
}
/**
* smk_curacc_msq : helper to check if current has access on msq
- * @msq : the msq
+ * @isp : the msq
* @access : access requested
*
* return 0 if current has access, error otherwise
*/
-static int smk_curacc_msq(struct kern_ipc_perm *msq, int access)
+static int smk_curacc_msq(struct kern_ipc_perm *isp, int access)
{
- struct smack_known *msp = smack_of_msq(msq);
+ struct smack_known *msp = smack_of_ipc(isp);
struct smk_audit_info ad;
int rc;
#ifdef CONFIG_AUDIT
smk_ad_init(&ad, __func__, LSM_AUDIT_DATA_IPC);
- ad.a.u.ipc_id = msq->id;
+ ad.a.u.ipc_id = isp->id;
#endif
rc = smk_curacc(msp, access, &ad);
rc = smk_bu_current("msq", msp, access, rc);
@@ -3267,27 +3186,27 @@ static int smk_curacc_msq(struct kern_ipc_perm *msq, int access)
/**
* smack_msg_queue_associate - Smack access check for msg_queue
- * @msq: the object
+ * @isp: the object
* @msqflg: access requested
*
* Returns 0 if current has the requested access, error code otherwise
*/
-static int smack_msg_queue_associate(struct kern_ipc_perm *msq, int msqflg)
+static int smack_msg_queue_associate(struct kern_ipc_perm *isp, int msqflg)
{
int may;
may = smack_flags_to_may(msqflg);
- return smk_curacc_msq(msq, may);
+ return smk_curacc_msq(isp, may);
}
/**
* smack_msg_queue_msgctl - Smack access check for msg_queue
- * @msq: the object
+ * @isp: the object
* @cmd: what it wants to do
*
* Returns 0 if current has the requested access, error code otherwise
*/
-static int smack_msg_queue_msgctl(struct kern_ipc_perm *msq, int cmd)
+static int smack_msg_queue_msgctl(struct kern_ipc_perm *isp, int cmd)
{
int may;
@@ -3310,29 +3229,29 @@ static int smack_msg_queue_msgctl(struct kern_ipc_perm *msq, int cmd)
return -EINVAL;
}
- return smk_curacc_msq(msq, may);
+ return smk_curacc_msq(isp, may);
}
/**
* smack_msg_queue_msgsnd - Smack access check for msg_queue
- * @msq: the object
+ * @isp: the object
* @msg: unused
* @msqflg: access requested
*
* Returns 0 if current has the requested access, error code otherwise
*/
-static int smack_msg_queue_msgsnd(struct kern_ipc_perm *msq, struct msg_msg *msg,
+static int smack_msg_queue_msgsnd(struct kern_ipc_perm *isp, struct msg_msg *msg,
int msqflg)
{
int may;
may = smack_flags_to_may(msqflg);
- return smk_curacc_msq(msq, may);
+ return smk_curacc_msq(isp, may);
}
/**
* smack_msg_queue_msgsnd - Smack access check for msg_queue
- * @msq: the object
+ * @isp: the object
* @msg: unused
* @target: unused
* @type: unused
@@ -3340,10 +3259,10 @@ static int smack_msg_queue_msgsnd(struct kern_ipc_perm *msq, struct msg_msg *msg
*
* Returns 0 if current has read and write access, error code otherwise
*/
-static int smack_msg_queue_msgrcv(struct kern_ipc_perm *msq, struct msg_msg *msg,
+static int smack_msg_queue_msgrcv(struct kern_ipc_perm *isp, struct msg_msg *msg,
struct task_struct *target, long type, int mode)
{
- return smk_curacc_msq(msq, MAY_READWRITE);
+ return smk_curacc_msq(isp, MAY_READWRITE);
}
/**
@@ -4756,21 +4675,21 @@ static struct security_hook_list smack_hooks[] __lsm_ro_after_init = {
LSM_HOOK_INIT(msg_msg_alloc_security, smack_msg_msg_alloc_security),
LSM_HOOK_INIT(msg_msg_free_security, smack_msg_msg_free_security),
- LSM_HOOK_INIT(msg_queue_alloc_security, smack_msg_queue_alloc_security),
- LSM_HOOK_INIT(msg_queue_free_security, smack_msg_queue_free_security),
+ LSM_HOOK_INIT(msg_queue_alloc_security, smack_ipc_alloc_security),
+ LSM_HOOK_INIT(msg_queue_free_security, smack_ipc_free_security),
LSM_HOOK_INIT(msg_queue_associate, smack_msg_queue_associate),
LSM_HOOK_INIT(msg_queue_msgctl, smack_msg_queue_msgctl),
LSM_HOOK_INIT(msg_queue_msgsnd, smack_msg_queue_msgsnd),
LSM_HOOK_INIT(msg_queue_msgrcv, smack_msg_queue_msgrcv),
- LSM_HOOK_INIT(shm_alloc_security, smack_shm_alloc_security),
- LSM_HOOK_INIT(shm_free_security, smack_shm_free_security),
+ LSM_HOOK_INIT(shm_alloc_security, smack_ipc_alloc_security),
+ LSM_HOOK_INIT(shm_free_security, smack_ipc_free_security),
LSM_HOOK_INIT(shm_associate, smack_shm_associate),
LSM_HOOK_INIT(shm_shmctl, smack_shm_shmctl),
LSM_HOOK_INIT(shm_shmat, smack_shm_shmat),
- LSM_HOOK_INIT(sem_alloc_security, smack_sem_alloc_security),
- LSM_HOOK_INIT(sem_free_security, smack_sem_free_security),
+ LSM_HOOK_INIT(sem_alloc_security, smack_ipc_alloc_security),
+ LSM_HOOK_INIT(sem_free_security, smack_ipc_free_security),
LSM_HOOK_INIT(sem_associate, smack_sem_associate),
LSM_HOOK_INIT(sem_semctl, smack_sem_semctl),
LSM_HOOK_INIT(sem_semop, smack_sem_semop),
--
2.14.1
next prev parent reply other threads:[~2018-03-24 5:43 UTC|newest]
Thread overview: 51+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-03-12 17:18 [RESEND RFC] translate_pid API nagarathnam.muthusamy
2018-03-13 20:47 ` Jann Horn
2018-03-13 21:20 ` Nagarathnam Muthusamy
2018-03-13 21:28 ` Jann Horn
2018-03-13 21:44 ` Nagarathnam Muthusamy
2018-03-13 22:00 ` Jann Horn
2018-03-13 22:45 ` Nagarathnam Muthusamy
2018-03-13 23:10 ` Jann Horn
2018-03-13 23:52 ` Nagarathnam Muthusamy
2018-03-14 3:29 ` Eric W. Biederman
2018-03-14 21:22 ` Nagarathnam Muthusamy
2018-03-14 22:03 ` Eric W. Biederman
2018-03-20 20:14 ` Nagarathnam Muthusamy
2018-03-21 0:33 ` Eric W. Biederman
2018-03-23 19:11 ` [REVIEW][PATCH 00/11] ipc: Fixing the pid namespace support Eric W. Biederman
2018-03-23 19:16 ` [REVIEW][PATCH 01/11] sem/security: Pass kern_ipc_perm not sem_array into the sem security hooks Eric W. Biederman
2018-03-23 21:46 ` Casey Schaufler
2018-03-28 23:20 ` Davidlohr Bueso
2018-03-23 19:16 ` [REVIEW][PATCH 02/11] shm/security: Pass kern_ipc_perm not shmid_kernel into the shm " Eric W. Biederman
2018-03-23 21:54 ` Casey Schaufler
2018-03-23 19:16 ` [REVIEW][PATCH 03/11] msg/security: Pass kern_ipc_perm not msg_queue into the msg_queue " Eric W. Biederman
2018-03-23 21:55 ` Casey Schaufler
2018-03-24 5:37 ` Eric W. Biederman
2018-03-23 19:16 ` [REVIEW][PATCH 04/11] sem: Move struct sem and struct sem_array into ipc/sem.c Eric W. Biederman
2018-03-23 19:16 ` [REVIEW][PATCH 05/11] shm: Move struct shmid_kernel into ipc/shm.c Eric W. Biederman
2018-03-23 19:16 ` [REVIEW][PATCH 06/11] msg: Move struct msg_queue into ipc/msg.c Eric W. Biederman
2018-03-23 19:16 ` [REVIEW][PATCH 07/11] ipc: Move IPCMNI from include/ipc.h into ipc/util.h Eric W. Biederman
2018-03-23 19:16 ` [REVIEW][PATCH 08/11] ipc/util: Helpers for making the sysvipc operations pid namespace aware Eric W. Biederman
2018-03-23 19:16 ` [REVIEW][PATCH 09/11] ipc/shm: Fix shmctl(..., IPC_STAT, ...) between pid namespaces Eric W. Biederman
2018-03-23 21:17 ` NAGARATHNAM MUTHUSAMY
2018-03-23 21:33 ` Eric W. Biederman
2018-03-23 21:41 ` NAGARATHNAM MUTHUSAMY
2018-03-28 23:04 ` Eric W. Biederman
2018-03-28 23:18 ` Nagarathnam Muthusamy
2018-03-23 19:16 ` [REVIEW][PATCH 10/11] ipc/msg: Fix msgctl(..., " Eric W. Biederman
2018-03-23 21:21 ` NAGARATHNAM MUTHUSAMY
2018-03-23 19:16 ` [REVIEW][PATCH 11/11] ipc/sem: Fix semctl(..., GETPID, " Eric W. Biederman
2018-03-29 0:52 ` Davidlohr Bueso
2018-03-30 19:09 ` Davidlohr Bueso
2018-03-30 20:12 ` Eric W. Biederman
2018-03-30 20:45 ` Davidlohr Bueso
2018-04-02 11:11 ` Manfred Spraul
2018-03-24 5:40 ` [REVIEW][PATCH 12/11] ipc: Directly call the security hook in ipc_ops.associate Eric W. Biederman
2018-03-28 23:40 ` Davidlohr Bueso
2018-03-31 2:13 ` James Morris
2018-03-24 5:42 ` Eric W. Biederman [this message]
2018-03-25 0:05 ` [REVIEW][PATCH 13/11] ipc/smack: Tidy up from the change in type of the ipc security hooks Casey Schaufler
2018-03-28 23:38 ` Davidlohr Bueso
2018-03-28 23:57 ` Davidlohr Bueso
2018-03-29 1:12 ` [REVIEW][PATCH 00/11] ipc: Fixing the pid namespace support Davidlohr Bueso
2018-03-29 18:42 ` Eric W. Biederman
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