| 1 | /* $NetBSD: netbsd32_sem.c,v 1.11 2014/09/19 17:25:33 matt 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 1.11 2014/09/19 17:25:33 matt 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/condvar.h> |
| 38 | #include <sys/ksem.h> |
| 39 | #include <sys/mount.h> |
| 40 | #include <sys/proc.h> |
| 41 | #include <sys/syscallargs.h> |
| 42 | |
| 43 | #include <compat/netbsd32/netbsd32.h> |
| 44 | #include <compat/netbsd32/netbsd32_syscallargs.h> |
| 45 | #include <compat/netbsd32/netbsd32_conv.h> |
| 46 | |
| 47 | static int |
| 48 | netbsd32_ksem_copyout(const void *src, void *dst, size_t size) |
| 49 | { |
| 50 | const intptr_t *idp = src; |
| 51 | netbsd32_intptr_t id32, *outidp = dst; |
| 52 | |
| 53 | KASSERT(size == sizeof(intptr_t)); |
| 54 | |
| 55 | /* Returning a kernel pointer to userspace sucks badly :-( */ |
| 56 | id32 = (netbsd32_intptr_t)*idp; |
| 57 | return copyout(&id32, outidp, sizeof(id32)); |
| 58 | } |
| 59 | |
| 60 | int |
| 61 | netbsd32__ksem_init(struct lwp *l, const struct netbsd32__ksem_init_args *uap, register_t *retval) |
| 62 | { |
| 63 | /* { |
| 64 | syscallarg(unsigned int) value; |
| 65 | syscallarg(netbsd32_semidp_t) idp; |
| 66 | } */ |
| 67 | |
| 68 | return do_ksem_init(l, SCARG(uap, value), |
| 69 | SCARG_P32(uap, idp), netbsd32_ksem_copyout); |
| 70 | } |
| 71 | |
| 72 | int |
| 73 | netbsd32__ksem_open(struct lwp *l, const struct netbsd32__ksem_open_args *uap, register_t *retval) |
| 74 | { |
| 75 | /* { |
| 76 | syscallarg(const netbsd32_charp) name; |
| 77 | syscallarg(int) oflag; |
| 78 | syscallarg(mode_t) mode; |
| 79 | syscallarg(unsigned int) value; |
| 80 | syscallarg(netbsd32_semidp_t) idp; |
| 81 | } */ |
| 82 | |
| 83 | return do_ksem_open(l, SCARG_P32(uap, name), |
| 84 | SCARG(uap, oflag), SCARG(uap, mode), SCARG(uap, value), |
| 85 | SCARG_P32(uap, idp), netbsd32_ksem_copyout); |
| 86 | } |
| 87 | |
| 88 | int |
| 89 | netbsd32__ksem_unlink(struct lwp *l, const struct netbsd32__ksem_unlink_args *uap, register_t *retval) |
| 90 | { |
| 91 | /* { |
| 92 | syscallarg(const netbsd32_charp) name; |
| 93 | } */ |
| 94 | struct sys__ksem_unlink_args ua; |
| 95 | |
| 96 | NETBSD32TOP_UAP(name, const char); |
| 97 | return sys__ksem_unlink(l, &ua, retval); |
| 98 | } |
| 99 | |
| 100 | int |
| 101 | netbsd32__ksem_close(struct lwp *l, const struct netbsd32__ksem_close_args *uap, register_t *retval) |
| 102 | { |
| 103 | /* { |
| 104 | syscallarg(netbsd32_intptr_t) id; |
| 105 | } */ |
| 106 | struct sys__ksem_close_args ua; |
| 107 | |
| 108 | NETBSD32TOX_UAP(id, intptr_t); |
| 109 | return sys__ksem_close(l, &ua, retval); |
| 110 | } |
| 111 | |
| 112 | int |
| 113 | netbsd32__ksem_post(struct lwp *l, const struct netbsd32__ksem_post_args *uap, register_t *retval) |
| 114 | { |
| 115 | /* { |
| 116 | syscallarg(netbsd32_intptr_t) id; |
| 117 | } */ |
| 118 | struct sys__ksem_post_args ua; |
| 119 | |
| 120 | NETBSD32TOX_UAP(id, intptr_t); |
| 121 | return sys__ksem_post(l, &ua, retval); |
| 122 | } |
| 123 | |
| 124 | int |
| 125 | netbsd32__ksem_wait(struct lwp *l, const struct netbsd32__ksem_wait_args *uap, register_t *retval) |
| 126 | { |
| 127 | /* { |
| 128 | syscallarg(netbsd32_intptr_t) id; |
| 129 | } */ |
| 130 | |
| 131 | return do_ksem_wait(l, SCARG(uap, id), false, NULL); |
| 132 | } |
| 133 | |
| 134 | int |
| 135 | netbsd32__ksem_trywait(struct lwp *l, const struct netbsd32__ksem_trywait_args *uap, register_t *retval) |
| 136 | { |
| 137 | /* { |
| 138 | syscallarg(netbsd32_intptr_t) id; |
| 139 | } */ |
| 140 | |
| 141 | return do_ksem_wait(l, SCARG(uap, id), true, NULL); |
| 142 | } |
| 143 | |
| 144 | int |
| 145 | netbsd32__ksem_timedwait(struct lwp *l, const struct netbsd32__ksem_timedwait_args *uap, |
| 146 | register_t *retval) |
| 147 | { |
| 148 | /* { |
| 149 | intptr_t id; |
| 150 | const netbsd32_timespecp_t abstime; |
| 151 | } */ |
| 152 | struct netbsd32_timespec ts32; |
| 153 | struct timespec ts; |
| 154 | intptr_t id; |
| 155 | int error; |
| 156 | |
| 157 | id = SCARG(uap, id); |
| 158 | |
| 159 | error = copyin(SCARG_P32(uap, abstime), &ts32, sizeof(ts32)); |
| 160 | if (error != 0) |
| 161 | return error; |
| 162 | netbsd32_to_timespec(&ts32, &ts); |
| 163 | |
| 164 | if (ts.tv_sec < 0 || ts.tv_nsec < 0 || ts.tv_nsec >= 1000000000) |
| 165 | return EINVAL; |
| 166 | |
| 167 | error = do_ksem_wait(l, id, false, &ts); |
| 168 | if (error == EWOULDBLOCK) |
| 169 | error = ETIMEDOUT; |
| 170 | return error; |
| 171 | } |
| 172 | |
| 173 | int |
| 174 | netbsd32__ksem_destroy(struct lwp *l, const struct netbsd32__ksem_destroy_args *uap, register_t *retval) |
| 175 | { |
| 176 | /* { |
| 177 | syscallarg(netbsd32_intptr_t) id; |
| 178 | } */ |
| 179 | struct sys__ksem_destroy_args ua; |
| 180 | |
| 181 | NETBSD32TOX_UAP(id, intptr_t); |
| 182 | return sys__ksem_destroy(l, &ua, retval); |
| 183 | } |
| 184 | |
| 185 | int |
| 186 | netbsd32__ksem_getvalue(struct lwp *l, const struct netbsd32__ksem_getvalue_args *uap, register_t *retval) |
| 187 | { |
| 188 | /* { |
| 189 | syscallarg(netbsd32_intptr_t) id; |
| 190 | syscallarg(netbsd32_intp) value; |
| 191 | } */ |
| 192 | struct sys__ksem_getvalue_args ua; |
| 193 | |
| 194 | NETBSD32TOX_UAP(id, intptr_t); |
| 195 | NETBSD32TOP_UAP(value, unsigned int); |
| 196 | return sys__ksem_getvalue(l, &ua, retval); |
| 197 | } |
| 198 | |