netbsd32_sem.c revision 1.10
1 /* $NetBSD: netbsd32_sem.c,v 1.10 2012/03/10 21:51:58 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 1.10 2012/03/10 21:51:58 joerg Exp $"); 31 32 #include <sys/types.h> 33 #include <sys/param.h> 34 #include <sys/systm.h> 35 #include <sys/kernel.h> 36 #include <sys/dirent.h> 37 #include <sys/ksem.h> 38 #include <sys/mount.h> 39 #include <sys/proc.h> 40 #include <sys/syscallargs.h> 41 42 #include <compat/netbsd32/netbsd32.h> 43 #include <compat/netbsd32/netbsd32_syscallargs.h> 44 #include <compat/netbsd32/netbsd32_conv.h> 45 46 static int 47 netbsd32_ksem_copyout(const void *src, void *dst, size_t size) 48 { 49 const intptr_t *idp = src; 50 netbsd32_intptr_t id32, *outidp = dst; 51 52 KASSERT(size == sizeof(intptr_t)); 53 54 /* Returning a kernel pointer to userspace sucks badly :-( */ 55 id32 = (netbsd32_intptr_t)*idp; 56 return copyout(&id32, outidp, sizeof(id32)); 57 } 58 59 int 60 netbsd32__ksem_init(struct lwp *l, const struct netbsd32__ksem_init_args *uap, register_t *retval) 61 { 62 /* { 63 syscallarg(unsigned int) value; 64 syscallarg(netbsd32_semidp_t) idp; 65 } */ 66 67 return do_ksem_init(l, SCARG(uap, value), 68 SCARG_P32(uap, idp), netbsd32_ksem_copyout); 69 } 70 71 int 72 netbsd32__ksem_open(struct lwp *l, const struct netbsd32__ksem_open_args *uap, register_t *retval) 73 { 74 /* { 75 syscallarg(const netbsd32_charp) name; 76 syscallarg(int) oflag; 77 syscallarg(mode_t) mode; 78 syscallarg(unsigned int) value; 79 syscallarg(netbsd32_semidp_t) idp; 80 } */ 81 82 return do_ksem_open(l, SCARG_P32(uap, name), 83 SCARG(uap, oflag), SCARG(uap, mode), SCARG(uap, value), 84 SCARG_P32(uap, idp), netbsd32_ksem_copyout); 85 } 86 87 int 88 netbsd32__ksem_unlink(struct lwp *l, const struct netbsd32__ksem_unlink_args *uap, register_t *retval) 89 { 90 /* { 91 syscallarg(const netbsd32_charp) name; 92 } */ 93 struct sys__ksem_unlink_args ua; 94 95 NETBSD32TOP_UAP(name, const char); 96 return sys__ksem_unlink(l, &ua, retval); 97 } 98 99 int 100 netbsd32__ksem_close(struct lwp *l, const struct netbsd32__ksem_close_args *uap, register_t *retval) 101 { 102 /* { 103 syscallarg(netbsd32_intptr_t) id; 104 } */ 105 struct sys__ksem_close_args ua; 106 107 NETBSD32TOX_UAP(id, intptr_t); 108 return sys__ksem_close(l, &ua, retval); 109 } 110 111 int 112 netbsd32__ksem_post(struct lwp *l, const struct netbsd32__ksem_post_args *uap, register_t *retval) 113 { 114 /* { 115 syscallarg(netbsd32_intptr_t) id; 116 } */ 117 struct sys__ksem_post_args ua; 118 119 NETBSD32TOX_UAP(id, intptr_t); 120 return sys__ksem_post(l, &ua, retval); 121 } 122 123 int 124 netbsd32__ksem_wait(struct lwp *l, const struct netbsd32__ksem_wait_args *uap, register_t *retval) 125 { 126 /* { 127 syscallarg(netbsd32_intptr_t) id; 128 } */ 129 130 return do_ksem_wait(l, SCARG(uap, id), false, NULL); 131 } 132 133 int 134 netbsd32__ksem_trywait(struct lwp *l, const struct netbsd32__ksem_trywait_args *uap, register_t *retval) 135 { 136 /* { 137 syscallarg(netbsd32_intptr_t) id; 138 } */ 139 140 return do_ksem_wait(l, SCARG(uap, id), true, NULL); 141 } 142 143 int 144 netbsd32__ksem_timedwait(struct lwp *l, const struct netbsd32__ksem_timedwait_args *uap, 145 register_t *retval) 146 { 147 /* { 148 intptr_t id; 149 const netbsd32_timespecp_t abstime; 150 } */ 151 struct netbsd32_timespec ts32; 152 struct timespec ts; 153 intptr_t id; 154 int error; 155 156 id = SCARG(uap, id); 157 158 error = copyin(SCARG_P32(uap, abstime), &ts32, sizeof(ts32)); 159 if (error != 0) 160 return error; 161 netbsd32_to_timespec(&ts32, &ts); 162 163 if (ts.tv_sec < 0 || ts.tv_nsec < 0 || ts.tv_nsec >= 1000000000) 164 return EINVAL; 165 166 error = do_ksem_wait(l, id, false, &ts); 167 if (error == EWOULDBLOCK) 168 error = ETIMEDOUT; 169 return error; 170 } 171 172 int 173 netbsd32__ksem_destroy(struct lwp *l, const struct netbsd32__ksem_destroy_args *uap, register_t *retval) 174 { 175 /* { 176 syscallarg(netbsd32_intptr_t) id; 177 } */ 178 struct sys__ksem_destroy_args ua; 179 180 NETBSD32TOX_UAP(id, intptr_t); 181 return sys__ksem_destroy(l, &ua, retval); 182 } 183 184 int 185 netbsd32__ksem_getvalue(struct lwp *l, const struct netbsd32__ksem_getvalue_args *uap, register_t *retval) 186 { 187 /* { 188 syscallarg(netbsd32_intptr_t) id; 189 syscallarg(netbsd32_intp) value; 190 } */ 191 struct sys__ksem_getvalue_args ua; 192 193 NETBSD32TOX_UAP(id, intptr_t); 194 NETBSD32TOP_UAP(value, unsigned int); 195 return sys__ksem_getvalue(l, &ua, retval); 196 } 197
Indexes created Sat Sep 27 21:09:56 GMT 2025