1 /* 2 * CDDL HEADER START 3 * 4 * The contents of this file are subject to the terms of the 5 * Common Development and Distribution License (the "License"). 6 * You may not use this file except in compliance with the License. 7 * 8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 9 * or http://www.opensolaris.org/os/licensing. 10 * See the License for the specific language governing permissions 11 * and limitations under the License. 12 * 13 * When distributing Covered Code, include this CDDL HEADER in each 14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 15 * If applicable, add the following below this CDDL HEADER, with the 16 * fields enclosed by brackets "[]" replaced with your own identifying 17 * information: Portions Copyright [yyyy] [name of copyright owner] 18 * 19 * CDDL HEADER END 20 */ 21 22 /* 23 * Copyright 2008 Sun Microsystems, Inc. All rights reserved. 24 * Use is subject to license terms. 25 */ 26 27 #include "lint.h" 28 #include <synch.h> 29 #include <time.h> 30 #include <errno.h> 31 #include <sys/syscall.h> 32 33 #define SUBSYS_lwp_rwlock_rdlock 0 34 #define SUBSYS_lwp_rwlock_wrlock 1 35 #define SUBSYS_lwp_rwlock_tryrdlock 2 36 #define SUBSYS_lwp_rwlock_trywrlock 3 37 #define SUBSYS_lwp_rwlock_unlock 4 38 39 int 40 __lwp_rwlock_rdlock(rwlock_t *rwl, timespec_t *tsp) 41 { 42 sysret_t rval; 43 int error; 44 45 error = __systemcall(&rval, SYS_lwp_rwlock_sys, 46 SUBSYS_lwp_rwlock_rdlock, rwl, tsp); 47 if (error == ERESTART) 48 error = EINTR; 49 50 return (error); 51 } 52 53 int 54 __lwp_rwlock_wrlock(rwlock_t *rwl, timespec_t *tsp) 55 { 56 sysret_t rval; 57 int error; 58 59 error = __systemcall(&rval, SYS_lwp_rwlock_sys, 60 SUBSYS_lwp_rwlock_wrlock, rwl, tsp); 61 if (error == ERESTART) 62 error = EINTR; 63 64 return (error); 65 } 66 67 int 68 __lwp_rwlock_tryrdlock(rwlock_t *rwl) 69 { 70 sysret_t rval; 71 int error; 72 73 error = __systemcall(&rval, SYS_lwp_rwlock_sys, 74 SUBSYS_lwp_rwlock_tryrdlock, rwl); 75 if (error == ERESTART) 76 error = EINTR; 77 78 return (error); 79 } 80 81 int 82 __lwp_rwlock_trywrlock(rwlock_t *rwl) 83 { 84 sysret_t rval; 85 int error; 86 87 error = __systemcall(&rval, SYS_lwp_rwlock_sys, 88 SUBSYS_lwp_rwlock_trywrlock, rwl); 89 if (error == ERESTART) 90 error = EINTR; 91 92 return (error); 93 } 94 95 int 96 __lwp_rwlock_unlock(rwlock_t *rwl) 97 { 98 sysret_t rval; 99 int error; 100 101 error = __systemcall(&rval, SYS_lwp_rwlock_sys, 102 SUBSYS_lwp_rwlock_unlock, rwl); 103 if (error == ERESTART) 104 error = EINTR; 105 106 return (error); 107 } 108