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authorEric W. Biederman <ebiederm@xmission.com>2018-03-22 20:52:43 -0500
committerEric W. Biederman <ebiederm@xmission.com>2018-03-22 21:07:51 -0500
commitaefad9593ec5ad4aae5346253a8b646364cd7317 (patch)
tree98f72912460afef0280f96f14880a8219c615f65 /security
parentdd206bec9a446884805370b1c16c1d7a97036777 (diff)
downloadlinux-stericsson-aefad9593ec5ad4aae5346253a8b646364cd7317.tar.gz
sem/security: Pass kern_ipc_perm not sem_array into the sem security hooks
All of the implementations of security hooks that take sem_array only access sem_perm the struct kern_ipc_perm member. This means the dependencies of the sem security hooks can be simplified by passing the kern_ipc_perm member of sem_array. Making this change will allow struct sem and struct sem_array to become private to ipc/sem.c. Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
Diffstat (limited to 'security')
-rw-r--r--security/security.c10
-rw-r--r--security/selinux/hooks.c28
-rw-r--r--security/smack/smack_lsm.c22
3 files changed, 30 insertions, 30 deletions
diff --git a/security/security.c b/security/security.c
index 1cd8526cb0b7..d3b9aeb6b73b 100644
--- a/security/security.c
+++ b/security/security.c
@@ -1220,27 +1220,27 @@ int security_shm_shmat(struct shmid_kernel *shp, char __user *shmaddr, int shmfl
return call_int_hook(shm_shmat, 0, shp, shmaddr, shmflg);
}
-int security_sem_alloc(struct sem_array *sma)
+int security_sem_alloc(struct kern_ipc_perm *sma)
{
return call_int_hook(sem_alloc_security, 0, sma);
}
-void security_sem_free(struct sem_array *sma)
+void security_sem_free(struct kern_ipc_perm *sma)
{
call_void_hook(sem_free_security, sma);
}
-int security_sem_associate(struct sem_array *sma, int semflg)
+int security_sem_associate(struct kern_ipc_perm *sma, int semflg)
{
return call_int_hook(sem_associate, 0, sma, semflg);
}
-int security_sem_semctl(struct sem_array *sma, int cmd)
+int security_sem_semctl(struct kern_ipc_perm *sma, int cmd)
{
return call_int_hook(sem_semctl, 0, sma, cmd);
}
-int security_sem_semop(struct sem_array *sma, struct sembuf *sops,
+int security_sem_semop(struct kern_ipc_perm *sma, struct sembuf *sops,
unsigned nsops, int alter)
{
return call_int_hook(sem_semop, 0, sma, sops, nsops, alter);
diff --git a/security/selinux/hooks.c b/security/selinux/hooks.c
index 8644d864e3c1..cce994e9fc0a 100644
--- a/security/selinux/hooks.c
+++ b/security/selinux/hooks.c
@@ -5767,53 +5767,53 @@ static int selinux_shm_shmat(struct shmid_kernel *shp,
}
/* Semaphore security operations */
-static int selinux_sem_alloc_security(struct sem_array *sma)
+static int selinux_sem_alloc_security(struct kern_ipc_perm *sma)
{
struct ipc_security_struct *isec;
struct common_audit_data ad;
u32 sid = current_sid();
int rc;
- rc = ipc_alloc_security(&sma->sem_perm, SECCLASS_SEM);
+ rc = ipc_alloc_security(sma, SECCLASS_SEM);
if (rc)
return rc;
- isec = sma->sem_perm.security;
+ isec = sma->security;
ad.type = LSM_AUDIT_DATA_IPC;
- ad.u.ipc_id = sma->sem_perm.key;
+ ad.u.ipc_id = sma->key;
rc = avc_has_perm(sid, isec->sid, SECCLASS_SEM,
SEM__CREATE, &ad);
if (rc) {
- ipc_free_security(&sma->sem_perm);
+ ipc_free_security(sma);
return rc;
}
return 0;
}
-static void selinux_sem_free_security(struct sem_array *sma)
+static void selinux_sem_free_security(struct kern_ipc_perm *sma)
{
- ipc_free_security(&sma->sem_perm);
+ ipc_free_security(sma);
}
-static int selinux_sem_associate(struct sem_array *sma, int semflg)
+static int selinux_sem_associate(struct kern_ipc_perm *sma, int semflg)
{
struct ipc_security_struct *isec;
struct common_audit_data ad;
u32 sid = current_sid();
- isec = sma->sem_perm.security;
+ isec = sma->security;
ad.type = LSM_AUDIT_DATA_IPC;
- ad.u.ipc_id = sma->sem_perm.key;
+ ad.u.ipc_id = sma->key;
return avc_has_perm(sid, isec->sid, SECCLASS_SEM,
SEM__ASSOCIATE, &ad);
}
/* Note, at this point, sma is locked down */
-static int selinux_sem_semctl(struct sem_array *sma, int cmd)
+static int selinux_sem_semctl(struct kern_ipc_perm *sma, int cmd)
{
int err;
u32 perms;
@@ -5851,11 +5851,11 @@ static int selinux_sem_semctl(struct sem_array *sma, int cmd)
return 0;
}
- err = ipc_has_perm(&sma->sem_perm, perms);
+ err = ipc_has_perm(sma, perms);
return err;
}
-static int selinux_sem_semop(struct sem_array *sma,
+static int selinux_sem_semop(struct kern_ipc_perm *sma,
struct sembuf *sops, unsigned nsops, int alter)
{
u32 perms;
@@ -5865,7 +5865,7 @@ static int selinux_sem_semop(struct sem_array *sma,
else
perms = SEM__READ;
- return ipc_has_perm(&sma->sem_perm, perms);
+ return ipc_has_perm(sma, perms);
}
static int selinux_ipc_permission(struct kern_ipc_perm *ipcp, short flag)
diff --git a/security/smack/smack_lsm.c b/security/smack/smack_lsm.c
index 03fdecba93bb..0402b8c1aec1 100644
--- a/security/smack/smack_lsm.c
+++ b/security/smack/smack_lsm.c
@@ -3077,9 +3077,9 @@ static int smack_shm_shmat(struct shmid_kernel *shp, char __user *shmaddr,
*
* Returns a pointer to the smack value
*/
-static struct smack_known *smack_of_sem(struct sem_array *sma)
+static struct smack_known *smack_of_sem(struct kern_ipc_perm *sma)
{
- return (struct smack_known *)sma->sem_perm.security;
+ return (struct smack_known *)sma->security;
}
/**
@@ -3088,9 +3088,9 @@ static struct smack_known *smack_of_sem(struct sem_array *sma)
*
* Returns 0
*/
-static int smack_sem_alloc_security(struct sem_array *sma)
+static int smack_sem_alloc_security(struct kern_ipc_perm *sma)
{
- struct kern_ipc_perm *isp = &sma->sem_perm;
+ struct kern_ipc_perm *isp = sma;
struct smack_known *skp = smk_of_current();
isp->security = skp;
@@ -3103,9 +3103,9 @@ static int smack_sem_alloc_security(struct sem_array *sma)
*
* Clears the blob pointer
*/
-static void smack_sem_free_security(struct sem_array *sma)
+static void smack_sem_free_security(struct kern_ipc_perm *sma)
{
- struct kern_ipc_perm *isp = &sma->sem_perm;
+ struct kern_ipc_perm *isp = sma;
isp->security = NULL;
}
@@ -3117,7 +3117,7 @@ static void smack_sem_free_security(struct sem_array *sma)
*
* Returns 0 if current has the requested access, error code otherwise
*/
-static int smk_curacc_sem(struct sem_array *sma, int access)
+static int smk_curacc_sem(struct kern_ipc_perm *sma, int access)
{
struct smack_known *ssp = smack_of_sem(sma);
struct smk_audit_info ad;
@@ -3125,7 +3125,7 @@ static int smk_curacc_sem(struct sem_array *sma, int access)
#ifdef CONFIG_AUDIT
smk_ad_init(&ad, __func__, LSM_AUDIT_DATA_IPC);
- ad.a.u.ipc_id = sma->sem_perm.id;
+ ad.a.u.ipc_id = sma->id;
#endif
rc = smk_curacc(ssp, access, &ad);
rc = smk_bu_current("sem", ssp, access, rc);
@@ -3139,7 +3139,7 @@ static int smk_curacc_sem(struct sem_array *sma, int access)
*
* Returns 0 if current has the requested access, error code otherwise
*/
-static int smack_sem_associate(struct sem_array *sma, int semflg)
+static int smack_sem_associate(struct kern_ipc_perm *sma, int semflg)
{
int may;
@@ -3154,7 +3154,7 @@ static int smack_sem_associate(struct sem_array *sma, int semflg)
*
* Returns 0 if current has the requested access, error code otherwise
*/
-static int smack_sem_semctl(struct sem_array *sma, int cmd)
+static int smack_sem_semctl(struct kern_ipc_perm *sma, int cmd)
{
int may;
@@ -3198,7 +3198,7 @@ static int smack_sem_semctl(struct sem_array *sma, int cmd)
*
* Returns 0 if access is allowed, error code otherwise
*/
-static int smack_sem_semop(struct sem_array *sma, struct sembuf *sops,
+static int smack_sem_semop(struct kern_ipc_perm *sma, struct sembuf *sops,
unsigned nsops, int alter)
{
return smk_curacc_sem(sma, MAY_READWRITE);