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 #pragma ident "%Z%%M% %I% %E% SMI" 28 29 #include "lint.h" 30 #include <synch.h> 31 #include <time.h> 32 #include <errno.h> 33 #include <sys/syscall.h> 34 35 #define SUBSYS_lwp_rwlock_rdlock 0 36 #define SUBSYS_lwp_rwlock_wrlock 1 37 #define SUBSYS_lwp_rwlock_tryrdlock 2 38 #define SUBSYS_lwp_rwlock_trywrlock 3 39 #define SUBSYS_lwp_rwlock_unlock 4 40 41 int 42 __lwp_rwlock_rdlock(rwlock_t *rwl, timespec_t *tsp) 43 { 44 sysret_t rval; 45 int error; 46 47 error = __systemcall(&rval, SYS_lwp_rwlock_sys, 48 SUBSYS_lwp_rwlock_rdlock, rwl, tsp); 49 if (error == ERESTART) 50 error = EINTR; 51 52 return (error); 53 } 54 55 int 56 __lwp_rwlock_wrlock(rwlock_t *rwl, timespec_t *tsp) 57 { 58 sysret_t rval; 59 int error; 60 61 error = __systemcall(&rval, SYS_lwp_rwlock_sys, 62 SUBSYS_lwp_rwlock_wrlock, rwl, tsp); 63 if (error == ERESTART) 64 error = EINTR; 65 66 return (error); 67 } 68 69 int 70 __lwp_rwlock_tryrdlock(rwlock_t *rwl) 71 { 72 sysret_t rval; 73 int error; 74 75 error = __systemcall(&rval, SYS_lwp_rwlock_sys, 76 SUBSYS_lwp_rwlock_tryrdlock, rwl); 77 if (error == ERESTART) 78 error = EINTR; 79 80 return (error); 81 } 82 83 int 84 __lwp_rwlock_trywrlock(rwlock_t *rwl) 85 { 86 sysret_t rval; 87 int error; 88 89 error = __systemcall(&rval, SYS_lwp_rwlock_sys, 90 SUBSYS_lwp_rwlock_trywrlock, rwl); 91 if (error == ERESTART) 92 error = EINTR; 93 94 return (error); 95 } 96 97 int 98 __lwp_rwlock_unlock(rwlock_t *rwl) 99 { 100 sysret_t rval; 101 int error; 102 103 error = __systemcall(&rval, SYS_lwp_rwlock_sys, 104 SUBSYS_lwp_rwlock_unlock, rwl); 105 if (error == ERESTART) 106 error = EINTR; 107 108 return (error); 109 } 110