linux32_unistd.c revision 1.10
1 /* $NetBSD: linux32_unistd.c,v 1.10 2007/06/16 19:55:26 dsl 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 36 __KERNEL_RCSID(0, "$NetBSD: linux32_unistd.c,v 1.10 2007/06/16 19:55:26 dsl Exp $"); 37 38 #include <sys/types.h> 39 #include <sys/param.h> 40 #include <sys/fstypes.h> 41 #include <sys/signal.h> 42 #include <sys/dirent.h> 43 #include <sys/kernel.h> 44 #include <sys/fcntl.h> 45 #include <sys/select.h> 46 #include <sys/proc.h> 47 #include <sys/ucred.h> 48 #include <sys/swap.h> 49 50 #include <machine/types.h> 51 52 #include <sys/syscallargs.h> 53 54 #include <compat/netbsd32/netbsd32.h> 55 #include <compat/netbsd32/netbsd32_conv.h> 56 #include <compat/netbsd32/netbsd32_syscallargs.h> 57 58 #include <compat/linux/common/linux_types.h> 59 #include <compat/linux/common/linux_signal.h> 60 #include <compat/linux/common/linux_machdep.h> 61 #include <compat/linux/common/linux_misc.h> 62 #include <compat/linux/common/linux_oldolduname.h> 63 #include <compat/linux/linux_syscallargs.h> 64 65 #include <compat/linux32/common/linux32_types.h> 66 #include <compat/linux32/common/linux32_signal.h> 67 #include <compat/linux32/common/linux32_machdep.h> 68 #include <compat/linux32/common/linux32_sysctl.h> 69 #include <compat/linux32/common/linux32_socketcall.h> 70 #include <compat/linux32/linux32_syscallargs.h> 71 72 static int linux32_select1(struct lwp *, register_t *, 73 int, fd_set *, fd_set *, fd_set *, struct timeval *); 74 75 int 76 linux32_sys_brk(l, v, retval) 77 struct lwp *l; 78 void *v; 79 register_t *retval; 80 { 81 struct linux32_sys_brk_args /* { 82 syscallarg(netbsd32_charp) nsize; 83 } */ *uap = v; 84 struct linux_sys_brk_args ua; 85 86 NETBSD32TOP_UAP(nsize, char); 87 return linux_sys_brk(l, &ua, retval); 88 } 89 90 int 91 linux32_sys_access(l, v, retval) 92 struct lwp *l; 93 void *v; 94 register_t *retval; 95 { 96 struct linux32_sys_access_args /* { 97 syscallarg(const netbsd32_charp) path; 98 syscallarg(int) flags; 99 } */ *uap = v; 100 struct sys_access_args ua; 101 102 NETBSD32TOP_UAP(path, const char); 103 NETBSD32TO64_UAP(flags); 104 105 return sys_access(l, &ua, retval); 106 } 107 108 int 109 linux32_sys_llseek(l, v, retval) 110 struct lwp *l; 111 void *v; 112 register_t *retval; 113 { 114 struct linux32_sys_llseek_args /* { 115 syscallcarg(int) fd; 116 syscallarg(u_int32_t) ohigh; 117 syscallarg(u_int32_t) olow; 118 syscallarg(netbsd32_void *) res; 119 syscallcarg(int) whence; 120 } */ *uap = v; 121 struct linux_sys_llseek_args ua; 122 123 NETBSD32TO64_UAP(fd); 124 NETBSD32TO64_UAP(ohigh); 125 NETBSD32TO64_UAP(olow); 126 NETBSD32TOP_UAP(res, char); 127 NETBSD32TO64_UAP(whence); 128 129 return linux_sys_llseek(l, &ua, retval); 130 } 131 132 int 133 linux32_sys_readlink(l, v, retval) 134 struct lwp *l; 135 void *v; 136 register_t *retval; 137 { 138 struct linux32_sys_readlink_args /* { 139 syscallarg(const netbsd32_charp) name; 140 syscallarg(netbsd32_charp) buf; 141 syscallarg(int) count; 142 } */ *uap = v; 143 struct linux_sys_readlink_args ua; 144 145 NETBSD32TOP_UAP(name, const char); 146 NETBSD32TOP_UAP(buf, char) 147 NETBSD32TO64_UAP(count); 148 149 return linux_sys_readlink(l, &ua, retval); 150 } 151 152 153 int 154 linux32_sys_select(l, v, retval) 155 struct lwp *l; 156 void *v; 157 register_t *retval; 158 { 159 struct linux32_sys_select_args /* { 160 syscallarg(int) nfds; 161 syscallarg(netbsd32_fd_setp_t) readfds; 162 syscallarg(netbsd32_fd_setp_t) writefds; 163 syscallarg(netbsd32_fd_setp_t) exceptfds; 164 syscallarg(netbsd32_timevalp_t) timeout; 165 } */ *uap = v; 166 167 return linux32_select1(l, retval, SCARG(uap, nfds), 168 SCARG_P32(uap, readfds), 169 SCARG_P32(uap, writefds), 170 SCARG_P32(uap, exceptfds), 171 SCARG_P32(uap, timeout)); 172 } 173 174 int 175 linux32_sys_oldselect(l, v, retval) 176 struct lwp *l; 177 void *v; 178 register_t *retval; 179 { 180 struct linux32_sys_oldselect_args /* { 181 syscallarg(linux32_oldselectp_t) lsp; 182 } */ *uap = v; 183 struct linux32_oldselect lsp32; 184 int error; 185 186 if ((error = copyin(SCARG_P32(uap, lsp), &lsp32, sizeof(lsp32))) != 0) 187 return error; 188 189 return linux32_select1(l, retval, lsp32.nfds, 190 NETBSD32PTR64(lsp32.readfds), NETBSD32PTR64(lsp32.writefds), 191 NETBSD32PTR64(lsp32.exceptfds), NETBSD32PTR64(lsp32.timeout)); 192 } 193 194 static int 195 linux32_select1(l, retval, nfds, readfds, writefds, exceptfds, timeout) 196 struct lwp *l; 197 register_t *retval; 198 int nfds; 199 fd_set *readfds, *writefds, *exceptfds; 200 struct timeval *timeout; 201 { 202 struct timeval tv0, tv1, utv, *tv = NULL; 203 struct netbsd32_timeval utv32; 204 int error; 205 206 timerclear(&utv); /* XXX GCC4 */ 207 208 /* 209 * Store current time for computation of the amount of 210 * time left. 211 */ 212 if (timeout) { 213 if ((error = copyin(timeout, &utv32, sizeof(utv32)))) 214 return error; 215 216 netbsd32_to_timeval(&utv32, &utv); 217 218 if (itimerfix(&utv)) { 219 /* 220 * The timeval was invalid. Convert it to something 221 * valid that will act as it does under Linux. 222 */ 223 utv.tv_sec += utv.tv_usec / 1000000; 224 utv.tv_usec %= 1000000; 225 if (utv.tv_usec < 0) { 226 utv.tv_sec -= 1; 227 utv.tv_usec += 1000000; 228 } 229 if (utv.tv_sec < 0) 230 timerclear(&utv); 231 } 232 microtime(&tv0); 233 tv = &utv; 234 } 235 236 error = selcommon(l, retval, nfds, 237 readfds, writefds, exceptfds, tv, NULL); 238 239 if (error) { 240 /* 241 * See fs/select.c in the Linux kernel. Without this, 242 * Maelstrom doesn't work. 243 */ 244 if (error == ERESTART) 245 error = EINTR; 246 return error; 247 } 248 249 if (timeout) { 250 if (*retval) { 251 /* 252 * Compute how much time was left of the timeout, 253 * by subtracting the current time and the time 254 * before we started the call, and subtracting 255 * that result from the user-supplied value. 256 */ 257 microtime(&tv1); 258 timersub(&tv1, &tv0, &tv1); 259 timersub(&utv, &tv1, &utv); 260 if (utv.tv_sec < 0) 261 timerclear(&utv); 262 } else { 263 timerclear(&utv); 264 } 265 266 netbsd32_from_timeval(&utv, &utv32); 267 268 if ((error = copyout(&utv32, timeout, sizeof(utv32)))) 269 return error; 270 } 271 272 return 0; 273 } 274 275 int 276 linux32_sys_pipe(l, v, retval) 277 struct lwp *l; 278 void *v; 279 register_t *retval; 280 { 281 struct linux32_sys_pipe_args /* { 282 syscallarg(netbsd32_intp) fd; 283 } */ *uap = v; 284 int error; 285 int pfds[2]; 286 287 if ((error = sys_pipe(l, 0, retval))) 288 return error; 289 290 pfds[0] = (int)retval[0]; 291 pfds[1] = (int)retval[1]; 292 293 if ((error = copyout(pfds, SCARG_P32(uap, fd), 2 * sizeof (int))) != 0) 294 return error; 295 296 retval[0] = 0; 297 retval[1] = 0; 298 299 return 0; 300 } 301 302 303 int 304 linux32_sys_unlink(l, v, retval) 305 struct lwp *l; 306 void *v; 307 register_t *retval; 308 { 309 struct linux32_sys_unlink_args /* { 310 syscallarg(const netbsd32_charp) path; 311 } */ *uap = v; 312 struct linux_sys_unlink_args ua; 313 314 NETBSD32TOP_UAP(path, const char); 315 316 return linux_sys_unlink(l, &ua, retval); 317 } 318 319 int 320 linux32_sys_chdir(l, v, retval) 321 struct lwp *l; 322 void *v; 323 register_t *retval; 324 { 325 struct linux32_sys_chdir_args /* { 326 syscallarg(const netbsd32_charp) path; 327 } */ *uap = v; 328 struct sys_chdir_args ua; 329 330 NETBSD32TOP_UAP(path, const char); 331 332 return sys_chdir(l, &ua, retval); 333 } 334 335 int 336 linux32_sys_link(l, v, retval) 337 struct lwp *l; 338 void *v; 339 register_t *retval; 340 { 341 struct linux32_sys_link_args /* { 342 syscallarg(const netbsd32_charp) path; 343 syscallarg(const netbsd32_charp) link; 344 } */ *uap = v; 345 struct sys_link_args ua; 346 347 NETBSD32TOP_UAP(path, const char); 348 NETBSD32TOP_UAP(link, const char); 349 350 return sys_link(l, &ua, retval); 351 } 352 353 int 354 linux32_sys_creat(l, v, retval) 355 struct lwp *l; 356 void *v; 357 register_t *retval; 358 { 359 struct linux32_sys_creat_args /* { 360 syscallarg(const netbsd32_charp) path; 361 syscallarg(int) mode; 362 } */ *uap = v; 363 struct sys_open_args ua; 364 365 NETBSD32TOP_UAP(path, const char); 366 SCARG(&ua, flags) = O_CREAT | O_TRUNC | O_WRONLY; 367 NETBSD32TO64_UAP(mode); 368 369 return sys_open(l, &ua, retval); 370 } 371 372 int 373 linux32_sys_mknod(l, v, retval) 374 struct lwp *l; 375 void *v; 376 register_t *retval; 377 { 378 struct linux32_sys_mknod_args /* { 379 syscallarg(const netbsd32_charp) path; 380 syscallarg(int) mode; 381 syscallarg(int) dev; 382 } */ *uap = v; 383 struct linux_sys_mknod_args ua; 384 385 NETBSD32TOP_UAP(path, const char); 386 NETBSD32TO64_UAP(mode); 387 NETBSD32TO64_UAP(dev); 388 389 return linux_sys_mknod(l, &ua, retval); 390 } 391 392 int 393 linux32_sys_chmod(l, v, retval) 394 struct lwp *l; 395 void *v; 396 register_t *retval; 397 { 398 struct linux32_sys_chmod_args /* { 399 syscallarg(const netbsd32_charp) path; 400 syscallarg(int) mode; 401 } */ *uap = v; 402 struct sys_chmod_args ua; 403 404 NETBSD32TOP_UAP(path, const char); 405 NETBSD32TO64_UAP(mode); 406 407 return sys_chmod(l, &ua, retval); 408 } 409 410 int 411 linux32_sys_lchown16(l, v, retval) 412 struct lwp *l; 413 void *v; 414 register_t *retval; 415 { 416 struct linux32_sys_lchown16_args /* { 417 syscallarg(const netbsd32_charp) path; 418 syscallarg(int) uid; 419 syscallarg(int) gid; 420 } */ *uap = v; 421 struct sys___posix_lchown_args ua; 422 423 NETBSD32TOP_UAP(path, const char); 424 425 if ((linux32_uid_t)SCARG(uap, uid) == (linux32_uid_t)-1) 426 SCARG(&ua, uid) = (uid_t)-1; 427 else 428 SCARG(&ua, uid) = SCARG(uap, uid); 429 430 if ((linux32_gid_t)SCARG(uap, gid) == (linux32_gid_t)-1) 431 SCARG(&ua, gid) = (gid_t)-1; 432 else 433 SCARG(&ua, gid) = SCARG(uap, gid); 434 435 return sys___posix_lchown(l, &ua, retval); 436 } 437 438 int 439 linux32_sys_break(l, v, retval) 440 struct lwp *l; 441 void *v; 442 register_t *retval; 443 { 444 #if 0 445 struct linux32_sys_break_args /* { 446 syscallarg(const netbsd32_charp) nsize; 447 } */ *uap = v; 448 #endif 449 450 return ENOSYS; 451 } 452 453 int 454 linux32_sys_rename(l, v, retval) 455 struct lwp *l; 456 void *v; 457 register_t *retval; 458 { 459 struct linux32_sys_rename_args /* { 460 syscallarg(const netbsd32_charp) from; 461 syscallarg(const netbsd32_charp) to; 462 } */ *uap = v; 463 struct sys_rename_args ua; 464 465 NETBSD32TOP_UAP(from, const char); 466 NETBSD32TOP_UAP(to, const char); 467 468 return sys___posix_rename(l, &ua, retval); 469 } 470 471 int 472 linux32_sys_mkdir(l, v, retval) 473 struct lwp *l; 474 void *v; 475 register_t *retval; 476 { 477 struct linux32_sys_mkdir_args /* { 478 syscallarg(const netbsd32_charp) path; 479 syscallarg(int) mode; 480 } */ *uap = v; 481 struct sys_mkdir_args ua; 482 483 NETBSD32TOP_UAP(path, const char); 484 NETBSD32TO64_UAP(mode); 485 486 return sys_mkdir(l, &ua, retval); 487 } 488 489 int 490 linux32_sys_rmdir(l, v, retval) 491 struct lwp *l; 492 void *v; 493 register_t *retval; 494 { 495 struct linux32_sys_rmdir_args /* { 496 syscallarg(const netbsd32_charp) path; 497 } */ *uap = v; 498 struct sys_rmdir_args ua; 499 500 NETBSD32TOP_UAP(path, const char); 501 502 return sys_rmdir(l, &ua, retval); 503 } 504 505 int 506 linux32_sys_getgroups16(l, v, retval) 507 struct lwp *l; 508 void *v; 509 register_t *retval; 510 { 511 struct linux32_sys_getgroups16_args /* { 512 syscallarg(int) gidsetsize; 513 syscallarg(linux32_gidp_t) gidset; 514 } */ *uap = v; 515 struct linux_sys_getgroups16_args ua; 516 517 NETBSD32TO64_UAP(gidsetsize); 518 NETBSD32TOP_UAP(gidset, linux_gid_t); 519 520 return linux_sys_getgroups16(l, &ua, retval); 521 } 522 523 int 524 linux32_sys_setgroups16(l, v, retval) 525 struct lwp *l; 526 void *v; 527 register_t *retval; 528 { 529 struct linux32_sys_setgroups16_args /* { 530 syscallarg(int) gidsetsize; 531 syscallarg(linux32_gidp_t) gidset; 532 } */ *uap = v; 533 struct linux_sys_setgroups16_args ua; 534 535 NETBSD32TO64_UAP(gidsetsize); 536 NETBSD32TOP_UAP(gidset, linux_gid_t); 537 538 return linux_sys_setgroups16(l, &ua, retval); 539 } 540 541 int 542 linux32_sys_symlink(l, v, retval) 543 struct lwp *l; 544 void *v; 545 register_t *retval; 546 { 547 struct linux32_sys_symlink_args /* { 548 syscallarg(const netbsd32_charp) path; 549 syscallarg(const netbsd32_charp) link; 550 } */ *uap = v; 551 struct sys_symlink_args ua; 552 553 NETBSD32TOP_UAP(path, const char); 554 NETBSD32TOP_UAP(link, const char); 555 556 return sys_symlink(l, &ua, retval); 557 } 558 559 560 int 561 linux32_sys_swapon(l, v, retval) 562 struct lwp *l; 563 void *v; 564 register_t *retval; 565 { 566 struct linux32_sys_swapon_args /* { 567 syscallarg(const netbsd32_charp) name; 568 } */ *uap = v; 569 struct sys_swapctl_args ua; 570 571 SCARG(&ua, cmd) = SWAP_ON; 572 SCARG(&ua, arg) = SCARG_P32(uap, name); 573 SCARG(&ua, misc) = 0; /* priority */ 574 return (sys_swapctl(l, &ua, retval)); 575 } 576 577 int 578 linux32_sys_swapoff(l, v, retval) 579 struct lwp *l; 580 void *v; 581 register_t *retval; 582 { 583 struct linux32_sys_swapoff_args /* { 584 syscallarg(const netbsd32_charp) path; 585 } */ *uap = v; 586 struct sys_swapctl_args ua; 587 588 SCARG(&ua, cmd) = SWAP_OFF; 589 SCARG(&ua, arg) = SCARG_P32(uap, path); 590 SCARG(&ua, misc) = 0; /* priority */ 591 return (sys_swapctl(l, &ua, retval)); 592 } 593 594 595 int 596 linux32_sys_reboot(l, v, retval) 597 struct lwp *l; 598 void *v; 599 register_t *retval; 600 { 601 struct linux32_sys_reboot_args /* { 602 syscallarg(int) magic1; 603 syscallarg(int) magic2; 604 syscallarg(int) cmd; 605 syscallarg(netbsd32_voidp) arg; 606 } */ *uap = v; 607 struct linux_sys_reboot_args ua; 608 609 NETBSD32TO64_UAP(magic1); 610 NETBSD32TO64_UAP(magic2); 611 NETBSD32TO64_UAP(cmd); 612 NETBSD32TOP_UAP(arg, void); 613 614 return linux_sys_reboot(l, &ua, retval); 615 } 616 617 int 618 linux32_sys_truncate(l, v, retval) 619 struct lwp *l; 620 void *v; 621 register_t *retval; 622 { 623 struct linux32_sys_truncate_args /* { 624 syscallarg(const netbsd32_charp) path; 625 syscallarg(netbsd32_charp) buf; 626 syscallarg(int) count; 627 } */ *uap = v; 628 struct compat_43_sys_truncate_args ua; 629 630 NETBSD32TOP_UAP(path, const char); 631 NETBSD32TO64_UAP(length); 632 633 return compat_43_sys_truncate(l, &ua, retval); 634 } 635 636 int 637 linux32_sys_fchown16(l, v, retval) 638 struct lwp *l; 639 void *v; 640 register_t *retval; 641 { 642 struct linux32_sys_fchown16_args /* { 643 syscallarg(int) fd; 644 syscallarg(int) uid; 645 syscallarg(int) gid; 646 } */ *uap = v; 647 struct sys___posix_fchown_args ua; 648 649 SCARG(&ua, fd) = SCARG(uap, fd); 650 651 if ((linux32_uid_t)SCARG(uap, uid) == (linux32_uid_t)-1) 652 SCARG(&ua, uid) = (uid_t)-1; 653 else 654 SCARG(&ua, uid) = SCARG(uap, uid); 655 656 if ((linux32_gid_t)SCARG(uap, gid) == (linux32_gid_t)-1) 657 SCARG(&ua, gid) = (gid_t)-1; 658 else 659 SCARG(&ua, gid) = SCARG(uap, gid); 660 661 return sys___posix_fchown(l, &ua, retval); 662 } 663 664 int 665 linux32_sys_setresuid(l, v, retval) 666 struct lwp *l; 667 void *v; 668 register_t *retval; 669 { 670 struct linux32_sys_setresuid_args /* { 671 syscallarg(uid_t) ruid; 672 syscallarg(uid_t) euid; 673 syscallarg(uid_t) suid; 674 } */ *uap = v; 675 struct linux_sys_setresuid_args ua; 676 677 SCARG(&ua, ruid) = (SCARG(uap, ruid) == -1) ? -1 : SCARG(uap, ruid); 678 SCARG(&ua, euid) = (SCARG(uap, euid) == -1) ? -1 : SCARG(uap, euid); 679 SCARG(&ua, suid) = (SCARG(uap, suid) == -1) ? -1 : SCARG(uap, suid); 680 681 return linux_sys_setresuid(l, &ua, retval); 682 } 683 684 int 685 linux32_sys_setresgid(l, v, retval) 686 struct lwp *l; 687 void *v; 688 register_t *retval; 689 { 690 struct linux32_sys_setresgid_args /* { 691 syscallarg(gid_t) rgid; 692 syscallarg(gid_t) egid; 693 syscallarg(gid_t) sgid; 694 } */ *uap = v; 695 struct linux_sys_setresgid_args ua; 696 697 SCARG(&ua, rgid) = (SCARG(uap, rgid) == -1) ? -1 : SCARG(uap, rgid); 698 SCARG(&ua, egid) = (SCARG(uap, egid) == -1) ? -1 : SCARG(uap, egid); 699 SCARG(&ua, sgid) = (SCARG(uap, sgid) == -1) ? -1 : SCARG(uap, sgid); 700 701 return linux_sys_setresgid(l, &ua, retval); 702 } 703
Indexes created Tue Sep 23 14:10:03 GMT 2025