linux32_unistd.c revision 1.6.2.2
1 /* $NetBSD: linux32_unistd.c,v 1.6.2.2 2007/05/27 14:35:14 ad 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 1.6.2.2 2007/05/27 14:35:14 ad 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, otv, *tv = NULL; 203 struct netbsd32_timeval utv32; 204 int error; 205 206 timerclear(&otv); /* 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 otv = utv; 218 219 if (itimerfix(&utv)) { 220 /* 221 * The timeval was invalid. Convert it to something 222 * valid that will act as it does under Linux. 223 */ 224 utv.tv_sec += utv.tv_usec / 1000000; 225 utv.tv_usec %= 1000000; 226 if (utv.tv_usec < 0) { 227 utv.tv_sec -= 1; 228 utv.tv_usec += 1000000; 229 } 230 if (utv.tv_sec < 0) 231 timerclear(&utv); 232 } 233 microtime(&tv0); 234 tv = &utv; 235 } 236 237 error = selcommon(l, retval, nfds, 238 readfds, writefds, exceptfds, tv, NULL); 239 240 if (error) { 241 /* 242 * See fs/select.c in the Linux kernel. Without this, 243 * Maelstrom doesn't work. 244 */ 245 if (error == ERESTART) 246 error = EINTR; 247 return error; 248 } 249 250 if (timeout) { 251 if (*retval) { 252 /* 253 * Compute how much time was left of the timeout, 254 * by subtracting the current time and the time 255 * before we started the call, and subtracting 256 * that result from the user-supplied value. 257 */ 258 microtime(&tv1); 259 timersub(&tv1, &tv0, &tv1); 260 timersub(&otv, &tv1, &utv); 261 if (utv.tv_sec < 0) 262 timerclear(&utv); 263 } else { 264 timerclear(&utv); 265 } 266 267 netbsd32_from_timeval(&utv, &utv32); 268 269 if ((error = copyout(&utv32, timeout, sizeof(utv32)))) 270 return error; 271 } 272 273 return 0; 274 } 275 276 int 277 linux32_sys_pipe(l, v, retval) 278 struct lwp *l; 279 void *v; 280 register_t *retval; 281 { 282 struct linux32_sys_pipe_args /* { 283 syscallarg(netbsd32_intp) fd; 284 } */ *uap = v; 285 int error; 286 int pfds[2]; 287 288 if ((error = sys_pipe(l, 0, retval))) 289 return error; 290 291 pfds[0] = (int)retval[0]; 292 pfds[1] = (int)retval[1]; 293 294 if ((error = copyout(pfds, SCARG_P32(uap, fd), 2 * sizeof (int))) != 0) 295 return error; 296 297 retval[0] = 0; 298 retval[1] = 0; 299 300 return 0; 301 } 302 303 304 int 305 linux32_sys_unlink(l, v, retval) 306 struct lwp *l; 307 void *v; 308 register_t *retval; 309 { 310 struct linux32_sys_unlink_args /* { 311 syscallarg(const netbsd32_charp) path; 312 } */ *uap = v; 313 struct linux_sys_unlink_args ua; 314 315 NETBSD32TOP_UAP(path, const char); 316 317 return linux_sys_unlink(l, &ua, retval); 318 } 319 320 int 321 linux32_sys_chdir(l, v, retval) 322 struct lwp *l; 323 void *v; 324 register_t *retval; 325 { 326 struct linux32_sys_chdir_args /* { 327 syscallarg(const netbsd32_charp) path; 328 } */ *uap = v; 329 struct sys_chdir_args ua; 330 331 NETBSD32TOP_UAP(path, const char); 332 333 return sys_chdir(l, &ua, retval); 334 } 335 336 int 337 linux32_sys_link(l, v, retval) 338 struct lwp *l; 339 void *v; 340 register_t *retval; 341 { 342 struct linux32_sys_link_args /* { 343 syscallarg(const netbsd32_charp) path; 344 syscallarg(const netbsd32_charp) link; 345 } */ *uap = v; 346 struct sys_link_args ua; 347 348 NETBSD32TOP_UAP(path, const char); 349 NETBSD32TOP_UAP(link, const char); 350 351 return sys_link(l, &ua, retval); 352 } 353 354 int 355 linux32_sys_creat(l, v, retval) 356 struct lwp *l; 357 void *v; 358 register_t *retval; 359 { 360 struct linux32_sys_creat_args /* { 361 syscallarg(const netbsd32_charp) path; 362 syscallarg(int) mode; 363 } */ *uap = v; 364 struct sys_open_args ua; 365 366 NETBSD32TOP_UAP(path, const char); 367 SCARG(&ua, flags) = O_CREAT | O_TRUNC | O_WRONLY; 368 NETBSD32TO64_UAP(mode); 369 370 return sys_open(l, &ua, retval); 371 } 372 373 int 374 linux32_sys_mknod(l, v, retval) 375 struct lwp *l; 376 void *v; 377 register_t *retval; 378 { 379 struct linux32_sys_mknod_args /* { 380 syscallarg(const netbsd32_charp) path; 381 syscallarg(int) mode; 382 syscallarg(int) dev; 383 } */ *uap = v; 384 struct linux_sys_mknod_args ua; 385 386 NETBSD32TOP_UAP(path, const char); 387 NETBSD32TO64_UAP(mode); 388 NETBSD32TO64_UAP(dev); 389 390 return linux_sys_mknod(l, &ua, retval); 391 } 392 393 int 394 linux32_sys_chmod(l, v, retval) 395 struct lwp *l; 396 void *v; 397 register_t *retval; 398 { 399 struct linux32_sys_chmod_args /* { 400 syscallarg(const netbsd32_charp) path; 401 syscallarg(int) mode; 402 } */ *uap = v; 403 struct sys_chmod_args ua; 404 405 NETBSD32TOP_UAP(path, const char); 406 NETBSD32TO64_UAP(mode); 407 408 return sys_chmod(l, &ua, retval); 409 } 410 411 int 412 linux32_sys_lchown16(l, v, retval) 413 struct lwp *l; 414 void *v; 415 register_t *retval; 416 { 417 struct linux32_sys_lchown16_args /* { 418 syscallarg(const netbsd32_charp) path; 419 syscallarg(int) uid; 420 syscallarg(int) gid; 421 } */ *uap = v; 422 struct sys___posix_lchown_args ua; 423 424 NETBSD32TOP_UAP(path, const char); 425 426 if ((linux32_uid_t)SCARG(uap, uid) == (linux32_uid_t)-1) 427 SCARG(&ua, uid) = (uid_t)-1; 428 else 429 SCARG(&ua, uid) = SCARG(uap, uid); 430 431 if ((linux32_gid_t)SCARG(uap, gid) == (linux32_gid_t)-1) 432 SCARG(&ua, gid) = (gid_t)-1; 433 else 434 SCARG(&ua, gid) = SCARG(uap, gid); 435 436 return sys___posix_lchown(l, &ua, retval); 437 } 438 439 int 440 linux32_sys_break(l, v, retval) 441 struct lwp *l; 442 void *v; 443 register_t *retval; 444 { 445 #if 0 446 struct linux32_sys_break_args /* { 447 syscallarg(const netbsd32_charp) nsize; 448 } */ *uap = v; 449 #endif 450 451 return ENOSYS; 452 } 453 454 int 455 linux32_sys_rename(l, v, retval) 456 struct lwp *l; 457 void *v; 458 register_t *retval; 459 { 460 struct linux32_sys_rename_args /* { 461 syscallarg(const netbsd32_charp) from; 462 syscallarg(const netbsd32_charp) to; 463 } */ *uap = v; 464 struct sys_rename_args ua; 465 466 NETBSD32TOP_UAP(from, const char); 467 NETBSD32TOP_UAP(to, const char); 468 469 return sys___posix_rename(l, &ua, retval); 470 } 471 472 int 473 linux32_sys_mkdir(l, v, retval) 474 struct lwp *l; 475 void *v; 476 register_t *retval; 477 { 478 struct linux32_sys_mkdir_args /* { 479 syscallarg(const netbsd32_charp) path; 480 syscallarg(int) mode; 481 } */ *uap = v; 482 struct sys_mkdir_args ua; 483 484 NETBSD32TOP_UAP(path, const char); 485 NETBSD32TO64_UAP(mode); 486 487 return sys_mkdir(l, &ua, retval); 488 } 489 490 int 491 linux32_sys_rmdir(l, v, retval) 492 struct lwp *l; 493 void *v; 494 register_t *retval; 495 { 496 struct linux32_sys_rmdir_args /* { 497 syscallarg(const netbsd32_charp) path; 498 } */ *uap = v; 499 struct sys_rmdir_args ua; 500 501 NETBSD32TOP_UAP(path, const char); 502 503 return sys_rmdir(l, &ua, retval); 504 } 505 506 int 507 linux32_sys_getgroups16(l, v, retval) 508 struct lwp *l; 509 void *v; 510 register_t *retval; 511 { 512 struct linux32_sys_getgroups16_args /* { 513 syscallarg(int) gidsetsize; 514 syscallarg(linux32_gidp_t) gidset; 515 } */ *uap = v; 516 struct linux_sys_getgroups16_args ua; 517 518 NETBSD32TO64_UAP(gidsetsize); 519 NETBSD32TOP_UAP(gidset, linux_gid_t); 520 521 return linux_sys_getgroups16(l, &ua, retval); 522 } 523 524 int 525 linux32_sys_setgroups16(l, v, retval) 526 struct lwp *l; 527 void *v; 528 register_t *retval; 529 { 530 struct linux32_sys_setgroups16_args /* { 531 syscallarg(int) gidsetsize; 532 syscallarg(linux32_gidp_t) gidset; 533 } */ *uap = v; 534 struct linux_sys_setgroups16_args ua; 535 536 NETBSD32TO64_UAP(gidsetsize); 537 NETBSD32TOP_UAP(gidset, linux_gid_t); 538 539 return linux_sys_setgroups16(l, &ua, retval); 540 } 541 542 int 543 linux32_sys_symlink(l, v, retval) 544 struct lwp *l; 545 void *v; 546 register_t *retval; 547 { 548 struct linux32_sys_symlink_args /* { 549 syscallarg(const netbsd32_charp) path; 550 syscallarg(const netbsd32_charp) link; 551 } */ *uap = v; 552 struct sys_symlink_args ua; 553 554 NETBSD32TOP_UAP(path, const char); 555 NETBSD32TOP_UAP(link, const char); 556 557 return sys_symlink(l, &ua, retval); 558 } 559 560 561 int 562 linux32_sys_swapon(l, v, retval) 563 struct lwp *l; 564 void *v; 565 register_t *retval; 566 { 567 struct linux32_sys_swapon_args /* { 568 syscallarg(const netbsd32_charp) name; 569 } */ *uap = v; 570 struct sys_swapctl_args ua; 571 572 SCARG(&ua, cmd) = SWAP_ON; 573 SCARG(&ua, arg) = SCARG_P32(uap, name); 574 SCARG(&ua, misc) = 0; /* priority */ 575 return (sys_swapctl(l, &ua, retval)); 576 } 577 578 int 579 linux32_sys_swapoff(l, v, retval) 580 struct lwp *l; 581 void *v; 582 register_t *retval; 583 { 584 struct linux32_sys_swapoff_args /* { 585 syscallarg(const netbsd32_charp) path; 586 } */ *uap = v; 587 struct sys_swapctl_args ua; 588 589 SCARG(&ua, cmd) = SWAP_OFF; 590 SCARG(&ua, arg) = SCARG_P32(uap, path); 591 SCARG(&ua, misc) = 0; /* priority */ 592 return (sys_swapctl(l, &ua, retval)); 593 } 594 595 596 int 597 linux32_sys_reboot(l, v, retval) 598 struct lwp *l; 599 void *v; 600 register_t *retval; 601 { 602 struct linux32_sys_reboot_args /* { 603 syscallarg(int) magic1; 604 syscallarg(int) magic2; 605 syscallarg(int) cmd; 606 syscallarg(netbsd32_voidp) arg; 607 } */ *uap = v; 608 struct linux_sys_reboot_args ua; 609 610 NETBSD32TO64_UAP(magic1); 611 NETBSD32TO64_UAP(magic2); 612 NETBSD32TO64_UAP(cmd); 613 NETBSD32TOP_UAP(arg, void); 614 615 return linux_sys_reboot(l, &ua, retval); 616 } 617 618 int 619 linux32_sys_truncate(l, v, retval) 620 struct lwp *l; 621 void *v; 622 register_t *retval; 623 { 624 struct linux32_sys_truncate_args /* { 625 syscallarg(const netbsd32_charp) path; 626 syscallarg(netbsd32_charp) buf; 627 syscallarg(int) count; 628 } */ *uap = v; 629 struct compat_43_sys_truncate_args ua; 630 631 NETBSD32TOP_UAP(path, const char); 632 NETBSD32TO64_UAP(length); 633 634 return compat_43_sys_truncate(l, &ua, retval); 635 } 636 637 int 638 linux32_sys_fchown16(l, v, retval) 639 struct lwp *l; 640 void *v; 641 register_t *retval; 642 { 643 struct linux32_sys_fchown16_args /* { 644 syscallarg(int) fd; 645 syscallarg(int) uid; 646 syscallarg(int) gid; 647 } */ *uap = v; 648 struct sys___posix_fchown_args ua; 649 650 SCARG(&ua, fd) = SCARG(uap, fd); 651 652 if ((linux32_uid_t)SCARG(uap, uid) == (linux32_uid_t)-1) 653 SCARG(&ua, uid) = (uid_t)-1; 654 else 655 SCARG(&ua, uid) = SCARG(uap, uid); 656 657 if ((linux32_gid_t)SCARG(uap, gid) == (linux32_gid_t)-1) 658 SCARG(&ua, gid) = (gid_t)-1; 659 else 660 SCARG(&ua, gid) = SCARG(uap, gid); 661 662 return sys___posix_fchown(l, &ua, retval); 663 } 664 665 int 666 linux32_sys_setresuid(l, v, retval) 667 struct lwp *l; 668 void *v; 669 register_t *retval; 670 { 671 struct linux32_sys_setresuid_args /* { 672 syscallarg(uid_t) ruid; 673 syscallarg(uid_t) euid; 674 syscallarg(uid_t) suid; 675 } */ *uap = v; 676 struct linux_sys_setresuid_args ua; 677 678 SCARG(&ua, ruid) = (SCARG(uap, ruid) == -1) ? -1 : SCARG(uap, ruid); 679 SCARG(&ua, euid) = (SCARG(uap, euid) == -1) ? -1 : SCARG(uap, euid); 680 SCARG(&ua, suid) = (SCARG(uap, suid) == -1) ? -1 : SCARG(uap, suid); 681 682 return linux_sys_setresuid(l, &ua, retval); 683 } 684 685 int 686 linux32_sys_setresgid(l, v, retval) 687 struct lwp *l; 688 void *v; 689 register_t *retval; 690 { 691 struct linux32_sys_setresgid_args /* { 692 syscallarg(gid_t) rgid; 693 syscallarg(gid_t) egid; 694 syscallarg(gid_t) sgid; 695 } */ *uap = v; 696 struct linux_sys_setresgid_args ua; 697 698 SCARG(&ua, rgid) = (SCARG(uap, rgid) == -1) ? -1 : SCARG(uap, rgid); 699 SCARG(&ua, egid) = (SCARG(uap, egid) == -1) ? -1 : SCARG(uap, egid); 700 SCARG(&ua, sgid) = (SCARG(uap, sgid) == -1) ? -1 : SCARG(uap, sgid); 701 702 return linux_sys_setresgid(l, &ua, retval); 703 } 704
Indexes created Tue Oct 21 19:09:51 GMT 2025