| 1 | /* $NetBSD: linux32_signal.c,v 1.18 2015/03/08 17:10:44 christos Exp $ */ |
| 2 | |
| 3 | /*- |
| 4 | * Copyright (c) 2006 Emmanuel Dreyfus, all rights reserved. |
| 5 | * |
| 6 | * Redistribution and use in source and binary forms, with or without |
| 7 | * modification, are permitted provided that the following conditions |
| 8 | * are met: |
| 9 | * 1. Redistributions of source code must retain the above copyright |
| 10 | * notice, this list of conditions and the following disclaimer. |
| 11 | * 2. Redistributions in binary form must reproduce the above copyright |
| 12 | * notice, this list of conditions and the following disclaimer in the |
| 13 | * documentation and/or other materials provided with the distribution. |
| 14 | * 3. All advertising materials mentioning features or use of this software |
| 15 | * must display the following acknowledgement: |
| 16 | * This product includes software developed by Emmanuel Dreyfus |
| 17 | * 4. The name of the author may not be used to endorse or promote |
| 18 | * products derived from this software without specific prior written |
| 19 | * permission. |
| 20 | * |
| 21 | * THIS SOFTWARE IS PROVIDED BY THE THE AUTHOR AND CONTRIBUTORS ``AS IS'' |
| 22 | * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, |
| 23 | * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR |
| 24 | * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS |
| 25 | * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
| 26 | * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
| 27 | * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
| 28 | * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN |
| 29 | * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
| 30 | * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
| 31 | * POSSIBILITY OF SUCH DAMAGE. |
| 32 | */ |
| 33 | |
| 34 | #include <sys/cdefs.h> |
| 35 | __KERNEL_RCSID(0, "$NetBSD: linux32_signal.c,v 1.18 2015/03/08 17:10:44 christos Exp $" ); |
| 36 | |
| 37 | #include <sys/param.h> |
| 38 | #include <sys/ucred.h> |
| 39 | #include <sys/signalvar.h> |
| 40 | #include <sys/lwp.h> |
| 41 | #include <sys/time.h> |
| 42 | #include <sys/proc.h> |
| 43 | #include <sys/wait.h> |
| 44 | |
| 45 | #include <compat/netbsd32/netbsd32.h> |
| 46 | |
| 47 | #include <compat/linux/common/linux_types.h> |
| 48 | #include <compat/linux/common/linux_signal.h> |
| 49 | |
| 50 | #include <compat/linux32/common/linux32_types.h> |
| 51 | #include <compat/linux32/common/linux32_signal.h> |
| 52 | #include <compat/linux32/common/linux32_siginfo.h> |
| 53 | #include <compat/linux32/linux32_syscallargs.h> |
| 54 | #include <compat/linux32/common/linux32_errno.h> |
| 55 | #include <compat/linux32/common/linux32_sched.h> |
| 56 | |
| 57 | #define linux32_sigemptyset(s) memset((s), 0, sizeof(*(s))) |
| 58 | #define linux32_sigismember(s, n) ((s)->sig[((n) - 1) / LINUX32__NSIG_BPW] \ |
| 59 | & (1 << ((n) - 1) % LINUX32__NSIG_BPW)) |
| 60 | #define linux32_sigaddset(s, n) ((s)->sig[((n) - 1) / LINUX32__NSIG_BPW] \ |
| 61 | |= (1 << ((n) - 1) % LINUX32__NSIG_BPW)) |
| 62 | |
| 63 | extern const int native_to_linux32_signo[]; |
| 64 | extern const int linux32_to_native_signo[]; |
| 65 | |
| 66 | #ifdef DEBUG_LINUX |
| 67 | #define DPRINTF(a) uprintf a |
| 68 | #else |
| 69 | #define DPRINTF(a) |
| 70 | #endif |
| 71 | |
| 72 | void |
| 73 | linux32_to_native_sigset(sigset_t *bss, const linux32_sigset_t *lss) |
| 74 | { |
| 75 | int i, newsig; |
| 76 | |
| 77 | sigemptyset(bss); |
| 78 | for (i = 1; i < LINUX32__NSIG; i++) { |
| 79 | if (linux32_sigismember(lss, i)) { |
| 80 | newsig = linux32_to_native_signo[i]; |
| 81 | if (newsig) |
| 82 | sigaddset(bss, newsig); |
| 83 | } |
| 84 | } |
| 85 | } |
| 86 | |
| 87 | void |
| 88 | native_to_linux32_sigset(linux32_sigset_t *lss, const sigset_t *bss) |
| 89 | { |
| 90 | int i, newsig; |
| 91 | |
| 92 | linux32_sigemptyset(lss); |
| 93 | for (i = 1; i < NSIG; i++) { |
| 94 | if (sigismember(bss, i)) { |
| 95 | newsig = native_to_linux32_signo[i]; |
| 96 | if (newsig) |
| 97 | linux32_sigaddset(lss, newsig); |
| 98 | } |
| 99 | } |
| 100 | } |
| 101 | |
| 102 | void |
| 103 | native_to_linux32_siginfo(linux32_siginfo_t *lsi, const struct _ksiginfo *ksi) |
| 104 | { |
| 105 | memset(lsi, 0, sizeof(*lsi)); |
| 106 | |
| 107 | lsi->lsi_signo = native_to_linux32_signo[ksi->_signo]; |
| 108 | lsi->lsi_errno = native_to_linux32_errno[ksi->_errno]; |
| 109 | lsi->lsi_code = native_to_linux32_si_code(ksi->_code); |
| 110 | |
| 111 | switch (ksi->_code) { |
| 112 | case SI_NOINFO: |
| 113 | break; |
| 114 | |
| 115 | case SI_USER: |
| 116 | lsi->lsi_pid = ksi->_reason._rt._pid; |
| 117 | lsi->lsi_uid = ksi->_reason._rt._uid; |
| 118 | if (lsi->lsi_signo == LINUX_SIGALRM || |
| 119 | lsi->lsi_signo >= LINUX_SIGRTMIN) |
| 120 | NETBSD32PTR32(lsi->lsi_value.sival_ptr, |
| 121 | ksi->_reason._rt._value.sival_ptr); |
| 122 | break; |
| 123 | |
| 124 | case SI_TIMER: |
| 125 | case SI_QUEUE: |
| 126 | lsi->lsi_uid = ksi->_reason._rt._uid; |
| 127 | lsi->lsi_uid = ksi->_reason._rt._uid; |
| 128 | NETBSD32PTR32(lsi->lsi_value.sival_ptr, |
| 129 | ksi->_reason._rt._value.sival_ptr); |
| 130 | break; |
| 131 | |
| 132 | case SI_ASYNCIO: |
| 133 | case SI_MESGQ: |
| 134 | NETBSD32PTR32(lsi->lsi_value.sival_ptr, |
| 135 | ksi->_reason._rt._value.sival_ptr); |
| 136 | break; |
| 137 | |
| 138 | default: |
| 139 | switch (ksi->_signo) { |
| 140 | case SIGCHLD: |
| 141 | lsi->lsi_uid = ksi->_reason._child._uid; |
| 142 | lsi->lsi_pid = ksi->_reason._child._pid; |
| 143 | lsi->lsi_status = native_to_linux32_si_status( |
| 144 | ksi->_code, ksi->_reason._child._status); |
| 145 | lsi->lsi_utime = ksi->_reason._child._utime; |
| 146 | lsi->lsi_stime = ksi->_reason._child._stime; |
| 147 | break; |
| 148 | |
| 149 | case SIGILL: |
| 150 | case SIGFPE: |
| 151 | case SIGSEGV: |
| 152 | case SIGBUS: |
| 153 | case SIGTRAP: |
| 154 | NETBSD32PTR32(lsi->lsi_addr, ksi->_reason._fault._addr); |
| 155 | break; |
| 156 | |
| 157 | case SIGIO: |
| 158 | lsi->lsi_fd = ksi->_reason._poll._fd; |
| 159 | lsi->lsi_band = ksi->_reason._poll._band; |
| 160 | break; |
| 161 | default: |
| 162 | break; |
| 163 | } |
| 164 | } |
| 165 | } |
| 166 | |
| 167 | unsigned int |
| 168 | native_to_linux32_sigflags(const int bsf) |
| 169 | { |
| 170 | unsigned int lsf = 0; |
| 171 | if ((bsf & SA_NOCLDSTOP) != 0) |
| 172 | lsf |= LINUX32_SA_NOCLDSTOP; |
| 173 | if ((bsf & SA_NOCLDWAIT) != 0) |
| 174 | lsf |= LINUX32_SA_NOCLDWAIT; |
| 175 | if ((bsf & SA_ONSTACK) != 0) |
| 176 | lsf |= LINUX32_SA_ONSTACK; |
| 177 | if ((bsf & SA_RESTART) != 0) |
| 178 | lsf |= LINUX32_SA_RESTART; |
| 179 | if ((bsf & SA_NODEFER) != 0) |
| 180 | lsf |= LINUX32_SA_NOMASK; |
| 181 | if ((bsf & SA_RESETHAND) != 0) |
| 182 | lsf |= LINUX32_SA_ONESHOT; |
| 183 | if ((bsf & SA_SIGINFO) != 0) |
| 184 | lsf |= LINUX32_SA_SIGINFO; |
| 185 | return lsf; |
| 186 | } |
| 187 | |
| 188 | int |
| 189 | linux32_to_native_sigflags(const unsigned long lsf) |
| 190 | { |
| 191 | int bsf = 0; |
| 192 | if ((lsf & LINUX32_SA_NOCLDSTOP) != 0) |
| 193 | bsf |= SA_NOCLDSTOP; |
| 194 | if ((lsf & LINUX32_SA_NOCLDWAIT) != 0) |
| 195 | bsf |= SA_NOCLDWAIT; |
| 196 | if ((lsf & LINUX32_SA_ONSTACK) != 0) |
| 197 | bsf |= SA_ONSTACK; |
| 198 | if ((lsf & LINUX32_SA_RESTART) != 0) |
| 199 | bsf |= SA_RESTART; |
| 200 | if ((lsf & LINUX32_SA_ONESHOT) != 0) |
| 201 | bsf |= SA_RESETHAND; |
| 202 | if ((lsf & LINUX32_SA_NOMASK) != 0) |
| 203 | bsf |= SA_NODEFER; |
| 204 | if ((lsf & LINUX32_SA_SIGINFO) != 0) |
| 205 | bsf |= SA_SIGINFO; |
| 206 | if ((lsf & ~LINUX32_SA_ALLBITS) != 0) { |
| 207 | #ifdef DEBUG_LINUX |
| 208 | printf("linux32_old_to_native_sigflags: " |
| 209 | "%lx extra bits ignored\n" , lsf); |
| 210 | #endif |
| 211 | } |
| 212 | return bsf; |
| 213 | } |
| 214 | |
| 215 | void |
| 216 | linux32_to_native_sigaction(struct sigaction *bsa, const struct linux32_sigaction *lsa) |
| 217 | { |
| 218 | bsa->sa_handler = NETBSD32PTR64(lsa->linux_sa_handler); |
| 219 | linux32_to_native_sigset(&bsa->sa_mask, &lsa->linux_sa_mask); |
| 220 | bsa->sa_flags = linux32_to_native_sigflags(lsa->linux_sa_flags); |
| 221 | } |
| 222 | |
| 223 | void |
| 224 | native_to_linux32_sigaction(struct linux32_sigaction *lsa, const struct sigaction *bsa) |
| 225 | { |
| 226 | NETBSD32PTR32(lsa->linux_sa_handler, bsa->sa_handler); |
| 227 | native_to_linux32_sigset(&lsa->linux_sa_mask, &bsa->sa_mask); |
| 228 | lsa->linux_sa_flags = native_to_linux32_sigflags(bsa->sa_flags); |
| 229 | NETBSD32PTR32(lsa->linux_sa_restorer, NULL); |
| 230 | } |
| 231 | |
| 232 | void |
| 233 | native_to_linux32_sigaltstack(struct linux32_sigaltstack *lss, const struct sigaltstack *bss) |
| 234 | { |
| 235 | NETBSD32PTR32(lss->ss_sp, bss->ss_sp); |
| 236 | lss->ss_size = bss->ss_size; |
| 237 | if (bss->ss_flags & SS_ONSTACK) |
| 238 | lss->ss_flags = LINUX32_SS_ONSTACK; |
| 239 | else if (bss->ss_flags & SS_DISABLE) |
| 240 | lss->ss_flags = LINUX32_SS_DISABLE; |
| 241 | else |
| 242 | lss->ss_flags = 0; |
| 243 | } |
| 244 | |
| 245 | |
| 246 | void |
| 247 | native_to_linux32_old_sigset(linux32_old_sigset_t *lss, const sigset_t *bss) |
| 248 | { |
| 249 | linux32_sigset_t lsnew; |
| 250 | |
| 251 | native_to_linux32_sigset(&lsnew, bss); |
| 252 | |
| 253 | /* convert new sigset to old sigset */ |
| 254 | *lss = lsnew.sig[0]; |
| 255 | } |
| 256 | |
| 257 | void |
| 258 | linux32_old_to_native_sigset(sigset_t *bss, const linux32_old_sigset_t *lss) |
| 259 | { |
| 260 | linux32_sigset_t ls; |
| 261 | |
| 262 | memset(&ls, 0, sizeof(ls)); |
| 263 | ls.sig[0] = *lss; |
| 264 | |
| 265 | linux32_to_native_sigset(bss, &ls); |
| 266 | } |
| 267 | |
| 268 | int |
| 269 | linux32_sys_rt_sigaction(struct lwp *l, const struct linux32_sys_rt_sigaction_args *uap, register_t *retval) |
| 270 | { |
| 271 | /* { |
| 272 | syscallarg(int) signum; |
| 273 | syscallarg(const linux32_sigactionp_t) nsa; |
| 274 | syscallarg(linux32_sigactionp_t) osa; |
| 275 | syscallarg(netbsd32_size_t) sigsetsize; |
| 276 | } */ |
| 277 | struct linux32_sigaction nls32; |
| 278 | struct linux32_sigaction ols32; |
| 279 | struct sigaction ns; |
| 280 | struct sigaction os; |
| 281 | int error; |
| 282 | int sig; |
| 283 | int vers = 0; |
| 284 | void *tramp = NULL; |
| 285 | |
| 286 | if (SCARG(uap, sigsetsize) != sizeof(linux32_sigset_t)) { |
| 287 | DPRINTF(("rt_sigaction: Inconsistent sigsetsize %u %zu\n" , |
| 288 | SCARG(uap, sigsetsize), sizeof(linux32_sigset_t))); |
| 289 | return EINVAL; |
| 290 | } |
| 291 | |
| 292 | if (SCARG_P32(uap, nsa) != NULL) { |
| 293 | if ((error = copyin(SCARG_P32(uap, nsa), |
| 294 | &nls32, sizeof(nls32))) != 0) { |
| 295 | DPRINTF(("rt_sigaction: Copyin %d\n" , error)); |
| 296 | return error; |
| 297 | } |
| 298 | linux32_to_native_sigaction(&ns, &nls32); |
| 299 | } |
| 300 | |
| 301 | sig = SCARG(uap, signum); |
| 302 | if (sig < 0 || sig >= LINUX32__NSIG) { |
| 303 | DPRINTF(("rt_sigaction: Bad signal number %d %d\n" , |
| 304 | sig, LINUX32__NSIG)); |
| 305 | return EINVAL; |
| 306 | } |
| 307 | if (sig > 0 && !linux32_to_native_signo[sig]) { |
| 308 | /* unknown signal... */ |
| 309 | os.sa_handler = SIG_IGN; |
| 310 | sigemptyset(&os.sa_mask); |
| 311 | os.sa_flags = 0; |
| 312 | } else { |
| 313 | if ((error = sigaction1(l, |
| 314 | linux32_to_native_signo[sig], |
| 315 | SCARG_P32(uap, nsa) ? &ns : NULL, |
| 316 | SCARG_P32(uap, osa) ? &os : NULL, |
| 317 | tramp, vers)) != 0) { |
| 318 | DPRINTF(("rt_sigaction: sigaction %d\n" , error)); |
| 319 | return error; |
| 320 | } |
| 321 | } |
| 322 | |
| 323 | if (SCARG_P32(uap, osa) != NULL) { |
| 324 | native_to_linux32_sigaction(&ols32, &os); |
| 325 | |
| 326 | if ((error = copyout(&ols32, SCARG_P32(uap, osa), |
| 327 | sizeof(ols32))) != 0) { |
| 328 | DPRINTF(("rt_sigaction: Copyout %d\n" , error)); |
| 329 | return error; |
| 330 | } |
| 331 | } |
| 332 | |
| 333 | return 0; |
| 334 | } |
| 335 | |
| 336 | int |
| 337 | linux32_sys_rt_sigprocmask(struct lwp *l, const struct linux32_sys_rt_sigprocmask_args *uap, register_t *retval) |
| 338 | { |
| 339 | /* { |
| 340 | syscallarg(int) how; |
| 341 | syscallarg(const linux32_sigsetp_t) set; |
| 342 | syscallarg(linux32_sigsetp_t) oset; |
| 343 | syscallarg(netbsd32_size_t) sigsetsize; |
| 344 | } */ |
| 345 | struct proc *p = l->l_proc; |
| 346 | linux32_sigset_t nls32, ols32; |
| 347 | sigset_t ns, os; |
| 348 | int error; |
| 349 | int how; |
| 350 | |
| 351 | if (SCARG(uap, sigsetsize) != sizeof(linux32_sigset_t)) |
| 352 | return EINVAL; |
| 353 | |
| 354 | switch (SCARG(uap, how)) { |
| 355 | case LINUX32_SIG_BLOCK: |
| 356 | how = SIG_BLOCK; |
| 357 | break; |
| 358 | case LINUX32_SIG_UNBLOCK: |
| 359 | how = SIG_UNBLOCK; |
| 360 | break; |
| 361 | case LINUX32_SIG_SETMASK: |
| 362 | how = SIG_SETMASK; |
| 363 | break; |
| 364 | default: |
| 365 | return EINVAL; |
| 366 | break; |
| 367 | } |
| 368 | |
| 369 | if (SCARG_P32(uap, set) != NULL) { |
| 370 | if ((error = copyin(SCARG_P32(uap, set), |
| 371 | &nls32, sizeof(nls32))) != 0) |
| 372 | return error; |
| 373 | linux32_to_native_sigset(&ns, &nls32); |
| 374 | } |
| 375 | |
| 376 | mutex_enter(p->p_lock); |
| 377 | error = sigprocmask1(l, how, |
| 378 | SCARG_P32(uap, set) ? &ns : NULL, |
| 379 | SCARG_P32(uap, oset) ? &os : NULL); |
| 380 | mutex_exit(p->p_lock); |
| 381 | |
| 382 | if (error != 0) |
| 383 | return error; |
| 384 | |
| 385 | if (SCARG_P32(uap, oset) != NULL) { |
| 386 | native_to_linux32_sigset(&ols32, &os); |
| 387 | if ((error = copyout(&ols32, |
| 388 | SCARG_P32(uap, oset), sizeof(ols32))) != 0) |
| 389 | return error; |
| 390 | } |
| 391 | |
| 392 | return 0; |
| 393 | } |
| 394 | |
| 395 | int |
| 396 | linux32_sys_kill(struct lwp *l, const struct linux32_sys_kill_args *uap, register_t *retval) |
| 397 | { |
| 398 | /* { |
| 399 | syscallarg(int) pid; |
| 400 | syscallarg(int) signum; |
| 401 | } */ |
| 402 | |
| 403 | struct sys_kill_args ka; |
| 404 | int sig; |
| 405 | |
| 406 | SCARG(&ka, pid) = SCARG(uap, pid); |
| 407 | sig = SCARG(uap, signum); |
| 408 | if (sig < 0 || sig >= LINUX32__NSIG) |
| 409 | return (EINVAL); |
| 410 | SCARG(&ka, signum) = linux32_to_native_signo[sig]; |
| 411 | return sys_kill(l, &ka, retval); |
| 412 | } |
| 413 | |
| 414 | int |
| 415 | linux32_sys_rt_sigsuspend(struct lwp *l, const struct linux32_sys_rt_sigsuspend_args *uap, register_t *retval) |
| 416 | { |
| 417 | /* { |
| 418 | syscallarg(linux32_sigsetp_t) unewset; |
| 419 | syscallarg(netbsd32_size_t) sigsetsize; |
| 420 | } */ |
| 421 | linux32_sigset_t lss; |
| 422 | sigset_t bss; |
| 423 | int error; |
| 424 | |
| 425 | if (SCARG(uap, sigsetsize) != sizeof(linux32_sigset_t)) |
| 426 | return EINVAL; |
| 427 | |
| 428 | if ((error = copyin(SCARG_P32(uap, unewset), |
| 429 | &lss, sizeof(linux32_sigset_t))) != 0) |
| 430 | return error; |
| 431 | |
| 432 | linux32_to_native_sigset(&bss, &lss); |
| 433 | |
| 434 | return sigsuspend1(l, &bss); |
| 435 | } |
| 436 | |
| 437 | static int |
| 438 | fetchss(const void *u, void *s, size_t len) |
| 439 | { |
| 440 | int error; |
| 441 | linux32_sigset_t lss; |
| 442 | |
| 443 | if ((error = copyin(u, &lss, sizeof(lss))) != 0) |
| 444 | return error; |
| 445 | |
| 446 | linux32_to_native_sigset(s, &lss); |
| 447 | return 0; |
| 448 | } |
| 449 | |
| 450 | static int |
| 451 | fetchts(const void *u, void *s, size_t len) |
| 452 | { |
| 453 | int error; |
| 454 | struct linux32_timespec lts; |
| 455 | |
| 456 | if ((error = copyin(u, <s, sizeof(lts))) != 0) |
| 457 | return error; |
| 458 | |
| 459 | linux32_to_native_timespec(s, <s); |
| 460 | return 0; |
| 461 | } |
| 462 | |
| 463 | static int |
| 464 | fakestorets(const void *u, void *s, size_t len) |
| 465 | { |
| 466 | /* Do nothing, sigtimedwait does not alter timeout like ours */ |
| 467 | return 0; |
| 468 | } |
| 469 | |
| 470 | static int |
| 471 | storeinfo(const void *s, void *u, size_t len) |
| 472 | { |
| 473 | linux32_siginfo_t lsi; |
| 474 | |
| 475 | |
| 476 | native_to_linux32_siginfo(&lsi, &((const siginfo_t *)s)->_info); |
| 477 | return copyout(&lsi, u, sizeof(lsi)); |
| 478 | } |
| 479 | |
| 480 | int |
| 481 | linux32_sys_rt_sigtimedwait(struct lwp *l, |
| 482 | const struct linux32_sys_rt_sigtimedwait_args *uap, register_t *retval) |
| 483 | { |
| 484 | /* { |
| 485 | syscallarg(const linux32_sigset_t *) set; |
| 486 | syscallarg(linux32_siginfo_t *) info); |
| 487 | syscallarg(const struct linux32_timespec *) timeout; |
| 488 | } */ |
| 489 | struct sys_____sigtimedwait50_args ap; |
| 490 | |
| 491 | SCARG(&ap, set) = SCARG_P32(uap, set); |
| 492 | SCARG(&ap, info) = SCARG_P32(uap, info); |
| 493 | SCARG(&ap, timeout) = SCARG_P32(uap, timeout); |
| 494 | |
| 495 | return sigtimedwait1(l, &ap, |
| 496 | retval, fetchss, storeinfo, fetchts, fakestorets); |
| 497 | } |
| 498 | |
| 499 | int |
| 500 | linux32_sys_signal(struct lwp *l, const struct linux32_sys_signal_args *uap, register_t *retval) |
| 501 | { |
| 502 | /* { |
| 503 | syscallarg(int) signum; |
| 504 | syscallarg(linux32_handlerp_t) handler; |
| 505 | } */ |
| 506 | struct sigaction nbsa, obsa; |
| 507 | int error, sig; |
| 508 | |
| 509 | *retval = -1; |
| 510 | |
| 511 | sig = SCARG(uap, signum); |
| 512 | if (sig < 0 || sig >= LINUX32__NSIG) |
| 513 | return EINVAL; |
| 514 | |
| 515 | nbsa.sa_handler = SCARG_P32(uap, handler); |
| 516 | sigemptyset(&nbsa.sa_mask); |
| 517 | nbsa.sa_flags = SA_RESETHAND | SA_NODEFER; |
| 518 | |
| 519 | if ((error = sigaction1(l, linux32_to_native_signo[sig], |
| 520 | &nbsa, &obsa, NULL, 0)) != 0) |
| 521 | return error; |
| 522 | |
| 523 | *retval = (int)(long)obsa.sa_handler; |
| 524 | return 0; |
| 525 | } |
| 526 | |
| 527 | int |
| 528 | linux32_sys_rt_sigpending(struct lwp *l, const struct linux32_sys_rt_sigpending_args *uap, register_t *retval) |
| 529 | { |
| 530 | /* { |
| 531 | syscallarg(linux32_sigsetp_t) set; |
| 532 | syscallarg(netbsd32_size_t) sigsetsize; |
| 533 | } */ |
| 534 | sigset_t bss; |
| 535 | linux32_sigset_t lss; |
| 536 | |
| 537 | if (SCARG(uap, sigsetsize) != sizeof(linux32_sigset_t)) |
| 538 | return EINVAL; |
| 539 | |
| 540 | sigpending1(l, &bss); |
| 541 | native_to_linux32_sigset(&lss, &bss); |
| 542 | return copyout(&lss, SCARG_P32(uap, set), sizeof(lss)); |
| 543 | } |
| 544 | |
| 545 | int |
| 546 | linux32_sys_siggetmask(struct lwp *l, const void *v, register_t *retval) |
| 547 | { |
| 548 | struct proc *p = l->l_proc; |
| 549 | sigset_t bss; |
| 550 | linux32_old_sigset_t lss; |
| 551 | int error; |
| 552 | |
| 553 | mutex_enter(p->p_lock); |
| 554 | error = sigprocmask1(l, SIG_SETMASK, 0, &bss); |
| 555 | mutex_exit(p->p_lock); |
| 556 | if (error) |
| 557 | return error; |
| 558 | native_to_linux32_old_sigset(&lss, &bss); |
| 559 | *retval = lss; |
| 560 | return 0; |
| 561 | } |
| 562 | |
| 563 | int |
| 564 | linux32_sys_sigsetmask(struct lwp *l, const struct linux32_sys_sigsetmask_args *uap, register_t *retval) |
| 565 | { |
| 566 | /* { |
| 567 | syscallarg(linux32_old_sigset_t) mask; |
| 568 | } */ |
| 569 | sigset_t nbss, obss; |
| 570 | linux32_old_sigset_t nlss, olss; |
| 571 | struct proc *p = l->l_proc; |
| 572 | int error; |
| 573 | |
| 574 | nlss = SCARG(uap, mask); |
| 575 | linux32_old_to_native_sigset(&nbss, &nlss); |
| 576 | mutex_enter(p->p_lock); |
| 577 | error = sigprocmask1(l, SIG_SETMASK, &nbss, &obss); |
| 578 | mutex_exit(p->p_lock); |
| 579 | if (error) |
| 580 | return error; |
| 581 | native_to_linux32_old_sigset(&olss, &obss); |
| 582 | *retval = olss; |
| 583 | return 0; |
| 584 | } |
| 585 | |
| 586 | int |
| 587 | linux32_sys_rt_queueinfo(struct lwp *l, const struct linux32_sys_rt_queueinfo_args *uap, register_t *retval) |
| 588 | { |
| 589 | /* |
| 590 | syscallarg(int) pid; |
| 591 | syscallarg(int) sig; |
| 592 | syscallarg(linux32_siginfop_t) uinfo; |
| 593 | */ |
| 594 | int error; |
| 595 | linux32_siginfo_t info; |
| 596 | |
| 597 | error = copyin(SCARG_P32(uap, uinfo), &info, sizeof(info)); |
| 598 | if (error) |
| 599 | return error; |
| 600 | if (info.lsi_code >= 0) |
| 601 | return EPERM; |
| 602 | |
| 603 | /* XXX To really implement this we need to */ |
| 604 | /* XXX keep a list of queued signals somewhere. */ |
| 605 | return linux32_sys_kill(l, (const void *)uap, retval); |
| 606 | } |
| 607 | |
| 608 | int |
| 609 | native_to_linux32_si_code(int code) |
| 610 | { |
| 611 | int si_codes[] = { |
| 612 | LINUX32_SI_USER, LINUX32_SI_QUEUE, LINUX32_SI_TIMER, |
| 613 | LINUX32_SI_ASYNCIO, LINUX32_SI_MESGQ, LINUX32_SI_TKILL /* SI_LWP */ |
| 614 | }; |
| 615 | |
| 616 | if (code <= 0 && -code < __arraycount(si_codes)) |
| 617 | return si_codes[-code]; |
| 618 | |
| 619 | return code; |
| 620 | } |
| 621 | |
| 622 | int |
| 623 | native_to_linux32_si_status(int code, int status) |
| 624 | { |
| 625 | int sts; |
| 626 | |
| 627 | switch (code) { |
| 628 | case CLD_CONTINUED: |
| 629 | sts = LINUX_SIGCONT; |
| 630 | break; |
| 631 | case CLD_EXITED: |
| 632 | sts = WEXITSTATUS(status); |
| 633 | break; |
| 634 | case CLD_STOPPED: |
| 635 | case CLD_TRAPPED: |
| 636 | case CLD_DUMPED: |
| 637 | case CLD_KILLED: |
| 638 | default: |
| 639 | sts = native_to_linux32_signo[WTERMSIG(status)]; |
| 640 | break; |
| 641 | } |
| 642 | |
| 643 | return sts; |
| 644 | } |
| 645 | |