1 /*- 2 * Copyright (c) 2003-2004 Networks Associates Technology, Inc. 3 * Copyright (c) 2006 SPARTA, Inc. 4 * All rights reserved. 5 * 6 * This software was developed for the FreeBSD Project in part by Network 7 * Associates Laboratories, the Security Research Division of Network 8 * Associates, Inc. under DARPA/SPAWAR contract N66001-01-C-8035 ("CBOSS"), 9 * as part of the DARPA CHATS research program. 10 * 11 * This software was enhanced by SPARTA ISSO under SPAWAR contract 12 * N66001-04-C-6019 ("SEFOS"). 13 * 14 * Redistribution and use in source and binary forms, with or without 15 * modification, are permitted provided that the following conditions 16 * are met: 17 * 1. Redistributions of source code must retain the above copyright 18 * notice, this list of conditions and the following disclaimer. 19 * 2. Redistributions in binary form must reproduce the above copyright 20 * notice, this list of conditions and the following disclaimer in the 21 * documentation and/or other materials provided with the distribution. 22 * 23 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 24 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 25 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 26 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 27 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 28 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 29 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 31 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 32 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 33 * SUCH DAMAGE. 34 */ 35 36 #include <sys/cdefs.h> 37 __FBSDID("$FreeBSD$"); 38 39 #include "opt_mac.h" 40 41 #include <sys/param.h> 42 #include <sys/kernel.h> 43 #include <sys/lock.h> 44 #include <sys/malloc.h> 45 #include <sys/mutex.h> 46 #include <sys/sbuf.h> 47 #include <sys/systm.h> 48 #include <sys/vnode.h> 49 #include <sys/mount.h> 50 #include <sys/file.h> 51 #include <sys/namei.h> 52 #include <sys/sysctl.h> 53 #include <sys/sem.h> 54 55 #include <security/mac/mac_framework.h> 56 #include <security/mac/mac_internal.h> 57 #include <security/mac/mac_policy.h> 58 59 static struct label * 60 mac_sysv_sem_label_alloc(void) 61 { 62 struct label *label; 63 64 label = mac_labelzone_alloc(M_WAITOK); 65 MAC_PERFORM(sysvsem_init_label, label); 66 return (label); 67 } 68 69 void 70 mac_sysvsem_init(struct semid_kernel *semakptr) 71 { 72 73 semakptr->label = mac_sysv_sem_label_alloc(); 74 } 75 76 static void 77 mac_sysv_sem_label_free(struct label *label) 78 { 79 80 MAC_PERFORM(sysvsem_destroy_label, label); 81 mac_labelzone_free(label); 82 } 83 84 void 85 mac_sysvsem_destroy(struct semid_kernel *semakptr) 86 { 87 88 mac_sysv_sem_label_free(semakptr->label); 89 semakptr->label = NULL; 90 } 91 92 void 93 mac_sysvsem_create(struct ucred *cred, struct semid_kernel *semakptr) 94 { 95 96 MAC_PERFORM(sysvsem_create, cred, semakptr, semakptr->label); 97 } 98 99 void 100 mac_sysvsem_cleanup(struct semid_kernel *semakptr) 101 { 102 103 MAC_PERFORM(sysvsem_cleanup, semakptr->label); 104 } 105 106 int 107 mac_sysvsem_check_semctl(struct ucred *cred, struct semid_kernel *semakptr, 108 int cmd) 109 { 110 int error; 111 112 MAC_CHECK(sysvsem_check_semctl, cred, semakptr, semakptr->label, 113 cmd); 114 115 return (error); 116 } 117 118 int 119 mac_sysvsem_check_semget(struct ucred *cred, struct semid_kernel *semakptr) 120 { 121 int error; 122 123 MAC_CHECK(sysvsem_check_semget, cred, semakptr, semakptr->label); 124 125 return (error); 126 } 127 128 int 129 mac_sysvsem_check_semop(struct ucred *cred, struct semid_kernel *semakptr, 130 size_t accesstype) 131 { 132 int error; 133 134 MAC_CHECK(sysvsem_check_semop, cred, semakptr, semakptr->label, 135 accesstype); 136 137 return (error); 138 } 139