1/* 2 * Copyright (c) 1996 Jeffrey Hsu <hsu@freebsd.org>. 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 3. Neither the name of the author nor the names of any co-contributors 14 * may be used to endorse or promote products derived from this software 15 * without specific prior written permission. 16 * 17 * THIS SOFTWARE IS PROVIDED BY JOHN BIRRELL AND CONTRIBUTORS ``AS IS'' AND 18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 20 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 27 * SUCH DAMAGE. 28 */ 29 30/* 31 * Copyright (c) 1997 John Birrell <jb@cimlogic.com.au>. 32 * All rights reserved. 33 * 34 * Redistribution and use in source and binary forms, with or without 35 * modification, are permitted provided that the following conditions 36 * are met: 37 * 1. Redistributions of source code must retain the above copyright 38 * notice, this list of conditions and the following disclaimer. 39 * 2. Redistributions in binary form must reproduce the above copyright 40 * notice, this list of conditions and the following disclaimer in the 41 * documentation and/or other materials provided with the distribution. 42 * 3. Neither the name of the author nor the names of any co-contributors 43 * may be used to endorse or promote products derived from this software 44 * without specific prior written permission. 45 * 46 * THIS SOFTWARE IS PROVIDED BY JOHN BIRRELL AND CONTRIBUTORS ``AS IS'' AND 47 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 48 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 49 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 50 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 51 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 52 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 53 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 54 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 55 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 56 * SUCH DAMAGE. 57 * 58 */ 59 60#include <sys/cdefs.h> 61__FBSDID("$FreeBSD: stable/11/lib/libthr/thread/thr_mutexattr.c 338707 2018-09-17 02:51:08Z pfg $"); 62 63#include "namespace.h" 64#include <string.h> 65#include <stdlib.h> 66#include <errno.h> 67#include <pthread.h> 68#include <pthread_np.h> 69#include "un-namespace.h" 70 71#include "thr_private.h" 72 73__weak_reference(_pthread_mutexattr_init, pthread_mutexattr_init); 74__weak_reference(_pthread_mutexattr_setkind_np, pthread_mutexattr_setkind_np); 75__weak_reference(_pthread_mutexattr_getkind_np, pthread_mutexattr_getkind_np); 76__weak_reference(_pthread_mutexattr_gettype, pthread_mutexattr_gettype); 77__weak_reference(_pthread_mutexattr_settype, pthread_mutexattr_settype); 78__weak_reference(_pthread_mutexattr_destroy, pthread_mutexattr_destroy); 79__weak_reference(_pthread_mutexattr_getpshared, pthread_mutexattr_getpshared); 80__weak_reference(_pthread_mutexattr_setpshared, pthread_mutexattr_setpshared); 81__weak_reference(_pthread_mutexattr_getprotocol, pthread_mutexattr_getprotocol); 82__weak_reference(_pthread_mutexattr_setprotocol, pthread_mutexattr_setprotocol); 83__weak_reference(_pthread_mutexattr_getprioceiling, 84 pthread_mutexattr_getprioceiling); 85__weak_reference(_pthread_mutexattr_setprioceiling, 86 pthread_mutexattr_setprioceiling); 87__weak_reference(_pthread_mutexattr_getrobust, pthread_mutexattr_getrobust); 88__weak_reference(_pthread_mutexattr_setrobust, pthread_mutexattr_setrobust); 89 90int 91_pthread_mutexattr_init(pthread_mutexattr_t *attr) 92{ 93 int ret; 94 pthread_mutexattr_t pattr; 95 96 if ((pattr = (pthread_mutexattr_t) 97 malloc(sizeof(struct pthread_mutex_attr))) == NULL) { 98 ret = ENOMEM; 99 } else { 100 memcpy(pattr, &_pthread_mutexattr_default, 101 sizeof(struct pthread_mutex_attr)); 102 *attr = pattr; 103 ret = 0; 104 } 105 return (ret); 106} 107 108int 109_pthread_mutexattr_setkind_np(pthread_mutexattr_t *attr, int kind) 110{ 111 int ret; 112 if (attr == NULL || *attr == NULL) { 113 errno = EINVAL; 114 ret = -1; 115 } else { 116 (*attr)->m_type = kind; 117 ret = 0; 118 } 119 return(ret); 120} 121 122int 123_pthread_mutexattr_getkind_np(pthread_mutexattr_t attr) 124{ 125 int ret; 126 127 if (attr == NULL) { 128 errno = EINVAL; 129 ret = -1; 130 } else { 131 ret = attr->m_type; 132 } 133 return (ret); 134} 135 136int 137_pthread_mutexattr_settype(pthread_mutexattr_t *attr, int type) 138{ 139 int ret; 140 141 if (attr == NULL || *attr == NULL || type >= PTHREAD_MUTEX_TYPE_MAX) { 142 ret = EINVAL; 143 } else { 144 (*attr)->m_type = type; 145 ret = 0; 146 } 147 return (ret); 148} 149 150int 151_pthread_mutexattr_gettype(const pthread_mutexattr_t * __restrict attr, 152 int * __restrict type) 153{ 154 int ret; 155 156 if (attr == NULL || *attr == NULL || (*attr)->m_type >= 157 PTHREAD_MUTEX_TYPE_MAX) { 158 ret = EINVAL; 159 } else { 160 *type = (*attr)->m_type; 161 ret = 0; 162 } 163 return (ret); 164} 165 166int 167_pthread_mutexattr_destroy(pthread_mutexattr_t *attr) 168{ 169 int ret; 170 if (attr == NULL || *attr == NULL) { 171 ret = EINVAL; 172 } else { 173 free(*attr); 174 *attr = NULL; 175 ret = 0; 176 } 177 return (ret); 178} 179 180int 181_pthread_mutexattr_getpshared(const pthread_mutexattr_t *attr, 182 int *pshared) 183{ 184 185 if (attr == NULL || *attr == NULL) 186 return (EINVAL); 187 *pshared = (*attr)->m_pshared; 188 return (0); 189} 190 191int 192_pthread_mutexattr_setpshared(pthread_mutexattr_t *attr, int pshared) 193{ 194 195 if (attr == NULL || *attr == NULL || 196 (pshared != PTHREAD_PROCESS_PRIVATE && 197 pshared != PTHREAD_PROCESS_SHARED)) 198 return (EINVAL); 199 (*attr)->m_pshared = pshared; 200 return (0); 201} 202 203int 204_pthread_mutexattr_getprotocol(const pthread_mutexattr_t * __restrict mattr, 205 int * __restrict protocol) 206{ 207 int ret = 0; 208 209 if (mattr == NULL || *mattr == NULL) 210 ret = EINVAL; 211 else 212 *protocol = (*mattr)->m_protocol; 213 214 return (ret); 215} 216 217int 218_pthread_mutexattr_setprotocol(pthread_mutexattr_t *mattr, int protocol) 219{ 220 int ret = 0; 221 222 if (mattr == NULL || *mattr == NULL || 223 protocol < PTHREAD_PRIO_NONE || protocol > PTHREAD_PRIO_PROTECT) 224 ret = EINVAL; 225 else { 226 (*mattr)->m_protocol = protocol; 227 (*mattr)->m_ceiling = THR_MAX_RR_PRIORITY; 228 } 229 return (ret); 230} 231 232int 233_pthread_mutexattr_getprioceiling(const pthread_mutexattr_t * __restrict mattr, 234 int * __restrict prioceiling) 235{ 236 int ret = 0; 237 238 if (mattr == NULL || *mattr == NULL) 239 ret = EINVAL; 240 else if ((*mattr)->m_protocol != PTHREAD_PRIO_PROTECT) 241 ret = EINVAL; 242 else 243 *prioceiling = (*mattr)->m_ceiling; 244 245 return (ret); 246} 247 248int 249_pthread_mutexattr_setprioceiling(pthread_mutexattr_t *mattr, int prioceiling) 250{ 251 int ret = 0; 252 253 if (mattr == NULL || *mattr == NULL) 254 ret = EINVAL; 255 else if ((*mattr)->m_protocol != PTHREAD_PRIO_PROTECT) 256 ret = EINVAL; 257 else 258 (*mattr)->m_ceiling = prioceiling; 259 260 return (ret); 261} 262 263int 264_pthread_mutexattr_getrobust(pthread_mutexattr_t *mattr, int *robust) 265{ 266 int ret; 267 268 if (mattr == NULL || *mattr == NULL) { 269 ret = EINVAL; 270 } else { 271 ret = 0; 272 *robust = (*mattr)->m_robust; 273 } 274 return (ret); 275} 276 277int 278_pthread_mutexattr_setrobust(pthread_mutexattr_t *mattr, int robust) 279{ 280 int ret; 281 282 if (mattr == NULL || *mattr == NULL) { 283 ret = EINVAL; 284 } else if (robust != PTHREAD_MUTEX_STALLED && 285 robust != PTHREAD_MUTEX_ROBUST) { 286 ret = EINVAL; 287 } else { 288 ret = 0; 289 (*mattr)->m_robust = robust; 290 } 291 return (ret); 292} 293 294