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shm/security: Pass kern_ipc_perm not shmid_kernel into the shm security hooks

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All of the implementations of security hooks that take shmid_kernel only
access shm_perm the struct kern_ipc_perm member.  This means the
dependencies of the shm security hooks can be simplified by passing
the kern_ipc_perm member of shmid_kernel..

Making this change will allow struct shmid_kernel to become private to ipc/shm.c.

Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
This commit is contained in:
Eric W. Biederman 2018-03-22 21:08:27 -05:00
parent aefad9593e
commit 7191adff2a
6 changed files with 52 additions and 56 deletions
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10
security/security.c
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@ -1195,27 +1195,27 @@ int security_msg_queue_msgrcv(struct msg_queue *msq, struct msg_msg *msg,
return call_int_hook(msg_queue_msgrcv, 0, msq, msg, target, type, mode);
}
int security_shm_alloc(struct shmid_kernel *shp)
int security_shm_alloc(struct kern_ipc_perm *shp)
{
return call_int_hook(shm_alloc_security, 0, shp);
}
void security_shm_free(struct shmid_kernel *shp)
void security_shm_free(struct kern_ipc_perm *shp)
{
call_void_hook(shm_free_security, shp);
}
int security_shm_associate(struct shmid_kernel *shp, int shmflg)
int security_shm_associate(struct kern_ipc_perm *shp, int shmflg)
{
return call_int_hook(shm_associate, 0, shp, shmflg);
}
int security_shm_shmctl(struct shmid_kernel *shp, int cmd)
int security_shm_shmctl(struct kern_ipc_perm *shp, int cmd)
{
return call_int_hook(shm_shmctl, 0, shp, cmd);
}
int security_shm_shmat(struct shmid_kernel *shp, char __user *shmaddr, int shmflg)
int security_shm_shmat(struct kern_ipc_perm *shp, char __user *shmaddr, int shmflg)
{
return call_int_hook(shm_shmat, 0, shp, shmaddr, shmflg);
}