123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153154155156157158159160161 |
- /*-
- * Copyright (c) 2003-2004 Networks Associates Technology, Inc.
- * Copyright (c) 2006 SPARTA, Inc.
- * Copyright (c) 2009 Robert N. M. Watson
- * All rights reserved.
- *
- * This software was developed for the FreeBSD Project in part by Network
- * Associates Laboratories, the Security Research Division of Network
- * Associates, Inc. under DARPA/SPAWAR contract N66001-01-C-8035 ("CBOSS"),
- * as part of the DARPA CHATS research program.
- *
- * This software was enhanced by SPARTA ISSO under SPAWAR contract
- * N66001-04-C-6019 ("SEFOS").
- *
- * This software was developed at the University of Cambridge Computer
- * Laboratory with support from a grant from Google, Inc.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
- * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
- * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- */
- #include <sys/cdefs.h>
- #include "opt_mac.h"
- #include <sys/param.h>
- #include <sys/kernel.h>
- #include <sys/lock.h>
- #include <sys/malloc.h>
- #include <sys/mutex.h>
- #include <sys/sbuf.h>
- #include <sys/systm.h>
- #include <sys/vnode.h>
- #include <sys/mount.h>
- #include <sys/file.h>
- #include <sys/namei.h>
- #include <sys/sdt.h>
- #include <sys/sysctl.h>
- #include <sys/sem.h>
- #include <security/mac/mac_framework.h>
- #include <security/mac/mac_internal.h>
- #include <security/mac/mac_policy.h>
- static struct label *
- mac_sysv_sem_label_alloc(void)
- {
- struct label *label;
- label = mac_labelzone_alloc(M_WAITOK);
- MAC_POLICY_PERFORM(sysvsem_init_label, label);
- return (label);
- }
- void
- mac_sysvsem_init(struct semid_kernel *semakptr)
- {
- if (mac_labeled & MPC_OBJECT_SYSVSEM)
- semakptr->label = mac_sysv_sem_label_alloc();
- else
- semakptr->label = NULL;
- }
- static void
- mac_sysv_sem_label_free(struct label *label)
- {
- MAC_POLICY_PERFORM_NOSLEEP(sysvsem_destroy_label, label);
- mac_labelzone_free(label);
- }
- void
- mac_sysvsem_destroy(struct semid_kernel *semakptr)
- {
- if (semakptr->label != NULL) {
- mac_sysv_sem_label_free(semakptr->label);
- semakptr->label = NULL;
- }
- }
- void
- mac_sysvsem_create(struct ucred *cred, struct semid_kernel *semakptr)
- {
- MAC_POLICY_PERFORM_NOSLEEP(sysvsem_create, cred, semakptr,
- semakptr->label);
- }
- void
- mac_sysvsem_cleanup(struct semid_kernel *semakptr)
- {
- MAC_POLICY_PERFORM_NOSLEEP(sysvsem_cleanup, semakptr->label);
- }
- MAC_CHECK_PROBE_DEFINE3(sysvsem_check_semctl, "struct ucred *",
- "struct semid_kernel *", "int");
- int
- mac_sysvsem_check_semctl(struct ucred *cred, struct semid_kernel *semakptr,
- int cmd)
- {
- int error;
- MAC_POLICY_CHECK_NOSLEEP(sysvsem_check_semctl, cred, semakptr,
- semakptr->label, cmd);
- MAC_CHECK_PROBE3(sysvsem_check_semctl, error, cred, semakptr, cmd);
- return (error);
- }
- MAC_CHECK_PROBE_DEFINE2(sysvsem_check_semget, "struct ucred *",
- "struct semid_kernel *");
- int
- mac_sysvsem_check_semget(struct ucred *cred, struct semid_kernel *semakptr)
- {
- int error;
- MAC_POLICY_CHECK_NOSLEEP(sysvsem_check_semget, cred, semakptr,
- semakptr->label);
- return (error);
- }
- MAC_CHECK_PROBE_DEFINE3(sysvsem_check_semop, "struct ucred *",
- "struct semid_kernel *", "size_t");
- int
- mac_sysvsem_check_semop(struct ucred *cred, struct semid_kernel *semakptr,
- size_t accesstype)
- {
- int error;
- MAC_POLICY_CHECK_NOSLEEP(sysvsem_check_semop, cred, semakptr,
- semakptr->label, accesstype);
- MAC_CHECK_PROBE3(sysvsem_check_semop, error, cred, semakptr,
- accesstype);
- return (error);
- }
|