1 /*- 2 * Copyright (c) 2003-2005 SPARTA, Inc. 3 * All rights reserved. 4 * 5 * This software was developed for the FreeBSD Project in part by Network 6 * Associates Laboratories, the Security Research Division of Network 7 * Associates, Inc. under DARPA/SPAWAR contract N66001-01-C-8035 ("CBOSS"), 8 * as part of the DARPA CHATS research program. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 22 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 29 * SUCH DAMAGE. 30 */ 31 32 #include <sys/cdefs.h> 33 __FBSDID("$FreeBSD$"); 34 35 #include "opt_mac.h" 36 #include "opt_posix.h" 37 38 #include <sys/param.h> 39 #include <sys/kernel.h> 40 #include <sys/ksem.h> 41 #include <sys/malloc.h> 42 #include <sys/mac.h> 43 #include <sys/module.h> 44 #include <sys/systm.h> 45 #include <sys/sysctl.h> 46 47 #include <security/mac/mac_framework.h> 48 #include <security/mac/mac_internal.h> 49 #include <security/mac/mac_policy.h> 50 51 static struct label * 52 mac_posix_sem_label_alloc(void) 53 { 54 struct label *label; 55 56 label = mac_labelzone_alloc(M_WAITOK); 57 MAC_PERFORM(init_posix_sem_label, label); 58 return (label); 59 } 60 61 void 62 mac_init_posix_sem(struct ksem *ksemptr) 63 { 64 65 ksemptr->ks_label = mac_posix_sem_label_alloc(); 66 } 67 68 static void 69 mac_posix_sem_label_free(struct label *label) 70 { 71 72 MAC_PERFORM(destroy_posix_sem_label, label); 73 } 74 75 void 76 mac_destroy_posix_sem(struct ksem *ksemptr) 77 { 78 79 mac_posix_sem_label_free(ksemptr->ks_label); 80 ksemptr->ks_label = NULL; 81 } 82 83 void 84 mac_create_posix_sem(struct ucred *cred, struct ksem *ksemptr) 85 { 86 87 MAC_PERFORM(create_posix_sem, cred, ksemptr, ksemptr->ks_label); 88 } 89 90 int 91 mac_check_posix_sem_destroy(struct ucred *cred, struct ksem *ksemptr) 92 { 93 int error; 94 95 MAC_CHECK(check_posix_sem_destroy, cred, ksemptr, ksemptr->ks_label); 96 97 return (error); 98 } 99 100 int 101 mac_check_posix_sem_open(struct ucred *cred, struct ksem *ksemptr) 102 { 103 int error; 104 105 MAC_CHECK(check_posix_sem_open, cred, ksemptr, ksemptr->ks_label); 106 107 return (error); 108 } 109 110 int 111 mac_check_posix_sem_getvalue(struct ucred *cred, struct ksem *ksemptr) 112 { 113 int error; 114 115 MAC_CHECK(check_posix_sem_getvalue, cred, ksemptr, 116 ksemptr->ks_label); 117 118 return (error); 119 } 120 121 int 122 mac_check_posix_sem_post(struct ucred *cred, struct ksem *ksemptr) 123 { 124 int error; 125 126 MAC_CHECK(check_posix_sem_post, cred, ksemptr, ksemptr->ks_label); 127 128 return (error); 129 } 130 131 int 132 mac_check_posix_sem_unlink(struct ucred *cred, struct ksem *ksemptr) 133 { 134 int error; 135 136 MAC_CHECK(check_posix_sem_unlink, cred, ksemptr, ksemptr->ks_label); 137 138 return (error); 139 } 140 141 int 142 mac_check_posix_sem_wait(struct ucred *cred, struct ksem *ksemptr) 143 { 144 int error; 145 146 MAC_CHECK(check_posix_sem_wait, cred, ksemptr, ksemptr->ks_label); 147 148 return (error); 149 } 150