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sem/security: Pass kern_ipc_perm not sem_array into the sem security hooks

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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>
This commit is contained in:
Eric W. Biederman 2018-03-22 20:52:43 -05:00
parent dd206bec9a
commit aefad9593e
6 changed files with 53 additions and 57 deletions
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10
security/security.c
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@ -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);