netbsd32_sem.c revision 1.9
1 /* $NetBSD: netbsd32_sem.c,v 1.9 2012/03/08 21:59:29 joerg Exp $ */ 2 3 /* 4 * Copyright (c) 2006 The NetBSD Foundation. 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 17 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 18 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 19 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 20 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 21 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 22 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 23 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 24 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 25 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 26 * POSSIBILITY OF SUCH DAMAGE. 27 */ 28 29 #include <sys/cdefs.h> 30 __KERNEL_RCSID(0, "$NetBSD: netbsd32_sem.c,v 1.9 2012/03/08 21:59:29 joerg Exp $"); 31 32 #ifdef _KERNEL_OPT 33 #include "opt_posix.h" 34 #endif 35 36 #include <sys/types.h> 37 #include <sys/param.h> 38 #include <sys/systm.h> 39 #include <sys/kernel.h> 40 #include <sys/dirent.h> 41 #include <sys/ksem.h> 42 #include <sys/mount.h> 43 #include <sys/proc.h> 44 #include <sys/syscallargs.h> 45 46 #include <compat/netbsd32/netbsd32.h> 47 #include <compat/netbsd32/netbsd32_syscallargs.h> 48 #include <compat/netbsd32/netbsd32_conv.h> 49 50 static int 51 netbsd32_ksem_copyout(const void *src, void *dst, size_t size) 52 { 53 const intptr_t *idp = src; 54 netbsd32_intptr_t id32, *outidp = dst; 55 56 KASSERT(size == sizeof(intptr_t)); 57 58 /* Returning a kernel pointer to userspace sucks badly :-( */ 59 id32 = (netbsd32_intptr_t)*idp; 60 return copyout(&id32, outidp, sizeof(id32)); 61 } 62 63 int 64 netbsd32__ksem_init(struct lwp *l, const struct netbsd32__ksem_init_args *uap, register_t *retval) 65 { 66 /* { 67 syscallarg(unsigned int) value; 68 syscallarg(netbsd32_semidp_t) idp; 69 } */ 70 71 return do_ksem_init(l, SCARG(uap, value), 72 SCARG_P32(uap, idp), netbsd32_ksem_copyout); 73 } 74 75 int 76 netbsd32__ksem_open(struct lwp *l, const struct netbsd32__ksem_open_args *uap, register_t *retval) 77 { 78 /* { 79 syscallarg(const netbsd32_charp) name; 80 syscallarg(int) oflag; 81 syscallarg(mode_t) mode; 82 syscallarg(unsigned int) value; 83 syscallarg(netbsd32_semidp_t) idp; 84 } */ 85 86 return do_ksem_open(l, SCARG_P32(uap, name), 87 SCARG(uap, oflag), SCARG(uap, mode), SCARG(uap, value), 88 SCARG_P32(uap, idp), netbsd32_ksem_copyout); 89 } 90 91 int 92 netbsd32__ksem_unlink(struct lwp *l, const struct netbsd32__ksem_unlink_args *uap, register_t *retval) 93 { 94 /* { 95 syscallarg(const netbsd32_charp) name; 96 } */ 97 struct sys__ksem_unlink_args ua; 98 99 NETBSD32TOP_UAP(name, const char); 100 return sys__ksem_unlink(l, &ua, retval); 101 } 102 103 int 104 netbsd32__ksem_close(struct lwp *l, const struct netbsd32__ksem_close_args *uap, register_t *retval) 105 { 106 /* { 107 syscallarg(netbsd32_intptr_t) id; 108 } */ 109 struct sys__ksem_close_args ua; 110 111 NETBSD32TOX_UAP(id, intptr_t); 112 return sys__ksem_close(l, &ua, retval); 113 } 114 115 int 116 netbsd32__ksem_post(struct lwp *l, const struct netbsd32__ksem_post_args *uap, register_t *retval) 117 { 118 /* { 119 syscallarg(netbsd32_intptr_t) id; 120 } */ 121 struct sys__ksem_post_args ua; 122 123 NETBSD32TOX_UAP(id, intptr_t); 124 return sys__ksem_post(l, &ua, retval); 125 } 126 127 int 128 netbsd32__ksem_wait(struct lwp *l, const struct netbsd32__ksem_wait_args *uap, register_t *retval) 129 { 130 /* { 131 syscallarg(netbsd32_intptr_t) id; 132 } */ 133 134 return do_ksem_wait(l, SCARG(uap, id), false, NULL); 135 } 136 137 int 138 netbsd32__ksem_trywait(struct lwp *l, const struct netbsd32__ksem_trywait_args *uap, register_t *retval) 139 { 140 /* { 141 syscallarg(netbsd32_intptr_t) id; 142 } */ 143 144 return do_ksem_wait(l, SCARG(uap, id), true, NULL); 145 } 146 147 int 148 netbsd32__ksem_timedwait(struct lwp *l, const struct netbsd32__ksem_timedwait_args *uap, 149 register_t *retval) 150 { 151 /* { 152 intptr_t id; 153 const netbsd32_timespecp_t abstime; 154 } */ 155 struct netbsd32_timespec ts32; 156 struct timespec ts; 157 intptr_t id; 158 int error; 159 160 id = SCARG(uap, id); 161 162 error = copyin(SCARG_P32(uap, abstime), &ts32, sizeof(ts32)); 163 if (error != 0) 164 return error; 165 netbsd32_to_timespec(&ts32, &ts); 166 167 if (ts.tv_sec < 0 || ts.tv_nsec < 0 || ts.tv_nsec >= 1000000000) 168 return EINVAL; 169 170 error = do_ksem_wait(l, id, false, &ts); 171 if (error == EWOULDBLOCK) 172 error = ETIMEDOUT; 173 return error; 174 } 175 176 int 177 netbsd32__ksem_destroy(struct lwp *l, const struct netbsd32__ksem_destroy_args *uap, register_t *retval) 178 { 179 /* { 180 syscallarg(netbsd32_intptr_t) id; 181 } */ 182 struct sys__ksem_destroy_args ua; 183 184 NETBSD32TOX_UAP(id, intptr_t); 185 return sys__ksem_destroy(l, &ua, retval); 186 } 187 188 int 189 netbsd32__ksem_getvalue(struct lwp *l, const struct netbsd32__ksem_getvalue_args *uap, register_t *retval) 190 { 191 /* { 192 syscallarg(netbsd32_intptr_t) id; 193 syscallarg(netbsd32_intp) value; 194 } */ 195 struct sys__ksem_getvalue_args ua; 196 197 NETBSD32TOX_UAP(id, intptr_t); 198 NETBSD32TOP_UAP(value, unsigned int); 199 return sys__ksem_getvalue(l, &ua, retval); 200 } 201
Indexes created Mon Sep 22 05:09:51 GMT 2025