desc.c revision 60fe8c139c6f2febefe595781812ddf0864a6ab8
1/* 2 * Copyright (c) 1991, 1992 Paul Kranenburg <pk@cs.few.eur.nl> 3 * Copyright (c) 1993 Branko Lankester <branko@hacktic.nl> 4 * Copyright (c) 1993, 1994, 1995, 1996 Rick Sladkey <jrs@world.std.com> 5 * Copyright (c) 1996-1999 Wichert Akkerman <wichert@cistron.nl> 6 * All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 3. The name of the author may not be used to endorse or promote products 17 * derived from this software without specific prior written permission. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 20 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 21 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 22 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 23 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 24 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 25 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 26 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 27 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 28 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 29 * 30 * $Id$ 31 */ 32 33#include "defs.h" 34 35#include <fcntl.h> 36#include <sys/file.h> 37#ifdef LINUX 38#include <inttypes.h> 39#endif 40#ifdef HAVE_SYS_EPOLL_H 41#include <sys/epoll.h> 42#endif 43#ifdef HAVE_LIBAIO_H 44#include <libaio.h> 45#endif 46 47#if HAVE_LONG_LONG_OFF_T 48/* 49 * Hacks for systems that have a long long off_t 50 */ 51#define flock64 flock /* Horrid hack */ 52#define printflock printflock64 /* Horrider hack */ 53#endif 54 55 56static const struct xlat fcntlcmds[] = { 57 { F_DUPFD, "F_DUPFD" }, 58 { F_GETFD, "F_GETFD" }, 59 { F_SETFD, "F_SETFD" }, 60 { F_GETFL, "F_GETFL" }, 61 { F_SETFL, "F_SETFL" }, 62 { F_GETLK, "F_GETLK" }, 63 { F_SETLK, "F_SETLK" }, 64 { F_SETLKW, "F_SETLKW" }, 65 { F_GETOWN, "F_GETOWN" }, 66 { F_SETOWN, "F_SETOWN" }, 67#ifdef F_RSETLK 68 { F_RSETLK, "F_RSETLK" }, 69#endif 70#ifdef F_RSETLKW 71 { F_RSETLKW, "F_RSETLKW" }, 72#endif 73#ifdef F_RGETLK 74 { F_RGETLK, "F_RGETLK" }, 75#endif 76#ifdef F_CNVT 77 { F_CNVT, "F_CNVT" }, 78#endif 79#ifdef F_SETSIG 80 { F_SETSIG, "F_SETSIG" }, 81#endif 82#ifdef F_GETSIG 83 { F_GETSIG, "F_GETSIG" }, 84#endif 85#ifdef F_CHKFL 86 { F_CHKFL, "F_CHKFL" }, 87#endif 88#ifdef F_DUP2FD 89 { F_DUP2FD, "F_DUP2FD" }, 90#endif 91#ifdef F_ALLOCSP 92 { F_ALLOCSP, "F_ALLOCSP" }, 93#endif 94#ifdef F_ISSTREAM 95 { F_ISSTREAM, "F_ISSTREAM" }, 96#endif 97#ifdef F_PRIV 98 { F_PRIV, "F_PRIV" }, 99#endif 100#ifdef F_NPRIV 101 { F_NPRIV, "F_NPRIV" }, 102#endif 103#ifdef F_QUOTACL 104 { F_QUOTACL, "F_QUOTACL" }, 105#endif 106#ifdef F_BLOCKS 107 { F_BLOCKS, "F_BLOCKS" }, 108#endif 109#ifdef F_BLKSIZE 110 { F_BLKSIZE, "F_BLKSIZE" }, 111#endif 112#ifdef F_GETOWN 113 { F_GETOWN, "F_GETOWN" }, 114#endif 115#ifdef F_SETOWN 116 { F_SETOWN, "F_SETOWN" }, 117#endif 118#ifdef F_REVOKE 119 { F_REVOKE, "F_REVOKE" }, 120#endif 121#ifdef F_SETLK 122 { F_SETLK, "F_SETLK" }, 123#endif 124#ifdef F_SETLKW 125 { F_SETLKW, "F_SETLKW" }, 126#endif 127#ifdef F_FREESP 128 { F_FREESP, "F_FREESP" }, 129#endif 130#ifdef F_GETLK 131 { F_GETLK, "F_GETLK" }, 132#endif 133#ifdef F_SETLK64 134 { F_SETLK64, "F_SETLK64" }, 135#endif 136#ifdef F_SETLKW64 137 { F_SETLKW64, "F_SETLKW64" }, 138#endif 139#ifdef F_FREESP64 140 { F_FREESP64, "F_FREESP64" }, 141#endif 142#ifdef F_GETLK64 143 { F_GETLK64, "F_GETLK64" }, 144#endif 145#ifdef F_SHARE 146 { F_SHARE, "F_SHARE" }, 147#endif 148#ifdef F_UNSHARE 149 { F_UNSHARE, "F_UNSHARE" }, 150#endif 151#ifdef F_SETLEASE 152 { F_SETLEASE, "F_SETLEASE" }, 153#endif 154#ifdef F_GETLEASE 155 { F_GETLEASE, "F_GETLEASE" }, 156#endif 157#ifdef F_NOTIFY 158 { F_NOTIFY, "F_NOTIFY" }, 159#endif 160#ifdef F_DUPFD_CLOEXEC 161 { F_DUPFD_CLOEXEC,"F_DUPFD_CLOEXEC"}, 162#endif 163 { 0, NULL }, 164}; 165 166static const struct xlat fdflags[] = { 167#ifdef FD_CLOEXEC 168 { FD_CLOEXEC, "FD_CLOEXEC" }, 169#endif 170 { 0, NULL }, 171}; 172 173#ifdef LOCK_SH 174 175static const struct xlat flockcmds[] = { 176 { LOCK_SH, "LOCK_SH" }, 177 { LOCK_EX, "LOCK_EX" }, 178 { LOCK_NB, "LOCK_NB" }, 179 { LOCK_UN, "LOCK_UN" }, 180 { 0, NULL }, 181}; 182 183#endif /* LOCK_SH */ 184 185static const struct xlat lockfcmds[] = { 186 { F_RDLCK, "F_RDLCK" }, 187 { F_WRLCK, "F_WRLCK" }, 188 { F_UNLCK, "F_UNLCK" }, 189#ifdef F_EXLCK 190 { F_EXLCK, "F_EXLCK" }, 191#endif 192#ifdef F_SHLCK 193 { F_SHLCK, "F_SHLCK" }, 194#endif 195 { 0, NULL }, 196}; 197 198#ifdef F_NOTIFY 199static const struct xlat notifyflags[] = { 200#ifdef DN_ACCESS 201 { DN_ACCESS, "DN_ACCESS" }, 202#endif 203#ifdef DN_MODIFY 204 { DN_MODIFY, "DN_MODIFY" }, 205#endif 206#ifdef DN_CREATE 207 { DN_CREATE, "DN_CREATE" }, 208#endif 209#ifdef DN_DELETE 210 { DN_DELETE, "DN_DELETE" }, 211#endif 212#ifdef DN_RENAME 213 { DN_RENAME, "DN_RENAME" }, 214#endif 215#ifdef DN_ATTRIB 216 { DN_ATTRIB, "DN_ATTRIB" }, 217#endif 218#ifdef DN_MULTISHOT 219 { DN_MULTISHOT, "DN_MULTISHOT" }, 220#endif 221 { 0, NULL }, 222}; 223#endif 224 225static const struct xlat whence[] = { 226 { SEEK_SET, "SEEK_SET" }, 227 { SEEK_CUR, "SEEK_CUR" }, 228 { SEEK_END, "SEEK_END" }, 229 { 0, NULL }, 230}; 231 232#ifndef HAVE_LONG_LONG_OFF_T 233/* fcntl/lockf */ 234static void 235printflock(struct tcb *tcp, long addr, int getlk) 236{ 237 struct flock fl; 238 239#if SUPPORTED_PERSONALITIES > 1 240 if (personality_wordsize[current_personality] != sizeof(fl.l_start)) { 241 if (personality_wordsize[current_personality] == 4) { 242 /* 32-bit x86 app on x86_64 and similar cases */ 243 struct { 244 short int l_type; 245 short int l_whence; 246 int32_t l_start; /* off_t */ 247 int32_t l_len; /* off_t */ 248 int32_t l_pid; /* pid_t */ 249 } fl32; 250 if (umove(tcp, addr, &fl32) < 0) { 251 tprints("{...}"); 252 return; 253 } 254 fl.l_type = fl32.l_type; 255 fl.l_whence = fl32.l_whence; 256 fl.l_start = fl32.l_start; 257 fl.l_len = fl32.l_len; 258 fl.l_pid = fl32.l_pid; 259 } else { 260 /* let people know we have a problem here */ 261 tprintf("{ <decode error: unsupported wordsize %d> }", 262 personality_wordsize[current_personality]); 263 return; 264 } 265 } else 266#endif 267 { 268 if (umove(tcp, addr, &fl) < 0) { 269 tprints("{...}"); 270 return; 271 } 272 } 273 tprints("{type="); 274 printxval(lockfcmds, fl.l_type, "F_???"); 275 tprints(", whence="); 276 printxval(whence, fl.l_whence, "SEEK_???"); 277 tprintf(", start=%ld, len=%ld", fl.l_start, fl.l_len); 278 if (getlk) 279 tprintf(", pid=%lu}", (unsigned long) fl.l_pid); 280 else 281 tprints("}"); 282} 283#endif 284 285#if _LFS64_LARGEFILE || HAVE_LONG_LONG_OFF_T 286/* fcntl/lockf */ 287static void 288printflock64(struct tcb *tcp, long addr, int getlk) 289{ 290 struct flock64 fl; 291 292 if (umove(tcp, addr, &fl) < 0) { 293 tprints("{...}"); 294 return; 295 } 296 tprints("{type="); 297 printxval(lockfcmds, fl.l_type, "F_???"); 298 tprints(", whence="); 299 printxval(whence, fl.l_whence, "SEEK_???"); 300 tprintf(", start=%lld, len=%lld", (long long) fl.l_start, (long long) fl.l_len); 301 if (getlk) 302 tprintf(", pid=%lu}", (unsigned long) fl.l_pid); 303 else 304 tprints("}"); 305} 306#endif 307 308int 309sys_fcntl(struct tcb *tcp) 310{ 311 if (entering(tcp)) { 312 printfd(tcp, tcp->u_arg[0]); 313 tprints(", "); 314 printxval(fcntlcmds, tcp->u_arg[1], "F_???"); 315 switch (tcp->u_arg[1]) { 316 case F_SETFD: 317 tprints(", "); 318 printflags(fdflags, tcp->u_arg[2], "FD_???"); 319 break; 320 case F_SETOWN: case F_DUPFD: 321#ifdef F_DUPFD_CLOEXEC 322 case F_DUPFD_CLOEXEC: 323#endif 324 tprintf(", %ld", tcp->u_arg[2]); 325 break; 326 case F_SETFL: 327 tprints(", "); 328 tprint_open_modes(tcp->u_arg[2]); 329 break; 330 case F_SETLK: case F_SETLKW: 331#ifdef F_FREESP 332 case F_FREESP: 333#endif 334 tprints(", "); 335 printflock(tcp, tcp->u_arg[2], 0); 336 break; 337#if _LFS64_LARGEFILE 338#ifdef F_FREESP64 339 case F_FREESP64: 340#endif 341 /* Linux glibc defines SETLK64 as SETLK, 342 even though the kernel has different values - as does Solaris. */ 343#if defined(F_SETLK64) && F_SETLK64 + 0 != F_SETLK 344 case F_SETLK64: 345#endif 346#if defined(F_SETLKW64) && F_SETLKW64 + 0 != F_SETLKW 347 case F_SETLKW64: 348#endif 349 tprints(", "); 350 printflock64(tcp, tcp->u_arg[2], 0); 351 break; 352#endif 353#ifdef F_NOTIFY 354 case F_NOTIFY: 355 tprints(", "); 356 printflags(notifyflags, tcp->u_arg[2], "DN_???"); 357 break; 358#endif 359#ifdef F_SETLEASE 360 case F_SETLEASE: 361 tprints(", "); 362 printxval(lockfcmds, tcp->u_arg[2], "F_???"); 363 break; 364#endif 365 } 366 } 367 else { 368 switch (tcp->u_arg[1]) { 369 case F_DUPFD: 370#ifdef F_DUPFD_CLOEXEC 371 case F_DUPFD_CLOEXEC: 372#endif 373 case F_SETFD: case F_SETFL: 374 case F_SETLK: case F_SETLKW: 375 case F_SETOWN: case F_GETOWN: 376#ifdef F_NOTIFY 377 case F_NOTIFY: 378#endif 379#ifdef F_SETLEASE 380 case F_SETLEASE: 381#endif 382 break; 383 case F_GETFD: 384 if (syserror(tcp) || tcp->u_rval == 0) 385 return 0; 386 tcp->auxstr = sprintflags("flags ", fdflags, tcp->u_rval); 387 return RVAL_HEX|RVAL_STR; 388 case F_GETFL: 389 if (syserror(tcp)) 390 return 0; 391 tcp->auxstr = sprint_open_modes(tcp->u_rval); 392 return RVAL_HEX|RVAL_STR; 393 case F_GETLK: 394 tprints(", "); 395 printflock(tcp, tcp->u_arg[2], 1); 396 break; 397#if _LFS64_LARGEFILE 398#if defined(F_GETLK64) && F_GETLK64+0 != F_GETLK 399 case F_GETLK64: 400#endif 401 tprints(", "); 402 printflock64(tcp, tcp->u_arg[2], 1); 403 break; 404#endif 405#ifdef F_GETLEASE 406 case F_GETLEASE: 407 if (syserror(tcp)) 408 return 0; 409 tcp->auxstr = xlookup(lockfcmds, tcp->u_rval); 410 return RVAL_HEX|RVAL_STR; 411#endif 412 default: 413 tprintf(", %#lx", tcp->u_arg[2]); 414 break; 415 } 416 } 417 return 0; 418} 419 420#ifdef LOCK_SH 421 422int 423sys_flock(struct tcb *tcp) 424{ 425 if (entering(tcp)) { 426 printfd(tcp, tcp->u_arg[0]); 427 tprints(", "); 428 printflags(flockcmds, tcp->u_arg[1], "LOCK_???"); 429 } 430 return 0; 431} 432#endif /* LOCK_SH */ 433 434int 435sys_close(struct tcb *tcp) 436{ 437 if (entering(tcp)) { 438 printfd(tcp, tcp->u_arg[0]); 439 } 440 return 0; 441} 442 443int 444sys_dup(struct tcb *tcp) 445{ 446 if (entering(tcp)) { 447 printfd(tcp, tcp->u_arg[0]); 448 } 449 return 0; 450} 451 452static int 453do_dup2(struct tcb *tcp, int flags_arg) 454{ 455 if (entering(tcp)) { 456 printfd(tcp, tcp->u_arg[0]); 457 tprints(", "); 458 printfd(tcp, tcp->u_arg[1]); 459 if (flags_arg >= 0) { 460 tprints(", "); 461 printflags(open_mode_flags, tcp->u_arg[flags_arg], "O_???"); 462 } 463 } 464 return 0; 465} 466 467int 468sys_dup2(struct tcb *tcp) 469{ 470 return do_dup2(tcp, -1); 471} 472 473#ifdef LINUX 474int 475sys_dup3(struct tcb *tcp) 476{ 477 return do_dup2(tcp, 2); 478} 479#endif 480 481#if defined(ALPHA) || defined(FREEBSD) || defined(SUNOS4) 482int 483sys_getdtablesize(struct tcb *tcp) 484{ 485 return 0; 486} 487#endif /* ALPHA || FREEBSD || SUNOS4 */ 488 489static int 490decode_select(struct tcb *tcp, long *args, enum bitness_t bitness) 491{ 492 int i, j, nfds; 493 unsigned int fdsize = ((((args[0] + 7) / 8) + sizeof(long) - 1) 494 & -sizeof(long)); 495 fd_set *fds; 496 const char *sep; 497 long arg; 498 499 if (entering(tcp)) { 500 fds = malloc(fdsize); 501 if (!fds) 502 die_out_of_memory(); 503 nfds = args[0]; 504 tprintf("%d", nfds); 505 for (i = 0; i < 3; i++) { 506 arg = args[i+1]; 507 if (arg == 0) { 508 tprints(", NULL"); 509 continue; 510 } 511 if (!verbose(tcp)) { 512 tprintf(", %#lx", arg); 513 continue; 514 } 515 if (umoven(tcp, arg, fdsize, (char *) fds) < 0) { 516 tprints(", [?]"); 517 continue; 518 } 519 tprints(", ["); 520 for (j = 0, sep = ""; j < nfds; j++) { 521 if (FD_ISSET(j, fds)) { 522 tprints(sep); 523 printfd(tcp, j); 524 sep = " "; 525 } 526 } 527 tprints("]"); 528 } 529 free(fds); 530 tprints(", "); 531 printtv_bitness(tcp, args[4], bitness, 0); 532 } 533 else { 534 static char outstr[1024]; 535 char *outptr; 536#define end_outstr (outstr + sizeof(outstr)) 537 const char *sep; 538 539 if (syserror(tcp)) 540 return 0; 541 542 nfds = tcp->u_rval; 543 if (nfds == 0) { 544 tcp->auxstr = "Timeout"; 545 return RVAL_STR; 546 } 547 548 fds = malloc(fdsize); 549 if (!fds) 550 die_out_of_memory(); 551 552 tcp->auxstr = outstr; 553 outptr = outstr; 554 sep = ""; 555 for (i = 0; i < 3; i++) { 556 int first = 1; 557 558 arg = args[i+1]; 559 if (!arg || umoven(tcp, arg, fdsize, (char *) fds) < 0) 560 continue; 561 for (j = 0; j < args[0]; j++) { 562 if (FD_ISSET(j, fds)) { 563 /* +2 chars needed at the end: ']',NUL */ 564 if (outptr < end_outstr - (sizeof(", except [") + sizeof(int)*3 + 2)) { 565 if (first) { 566 outptr += sprintf(outptr, "%s%s [%u", 567 sep, 568 i == 0 ? "in" : i == 1 ? "out" : "except", 569 j 570 ); 571 first = 0; 572 sep = ", "; 573 } 574 else { 575 outptr += sprintf(outptr, " %u", j); 576 } 577 } 578 nfds--; 579 } 580 } 581 if (outptr != outstr) 582 *outptr++ = ']'; 583 if (nfds == 0) 584 break; 585 } 586 free(fds); 587#ifdef LINUX 588 /* This contains no useful information on SunOS. */ 589 if (args[4]) { 590 if (outptr < end_outstr - 128) { 591 outptr += sprintf(outptr, "%sleft ", sep); 592 outptr = sprinttv(tcp, args[4], bitness, outptr); 593 } 594 } 595#endif /* LINUX */ 596 *outptr = '\0'; 597 return RVAL_STR; 598#undef end_outstr 599 } 600 return 0; 601} 602 603#ifdef LINUX 604 605int 606sys_oldselect(struct tcb *tcp) 607{ 608 long args[5]; 609 610 if (umoven(tcp, tcp->u_arg[0], sizeof args, (char *) args) < 0) { 611 tprints("[...]"); 612 return 0; 613 } 614 return decode_select(tcp, args, BITNESS_CURRENT); 615} 616 617#ifdef ALPHA 618int 619sys_osf_select(struct tcb *tcp) 620{ 621 long *args = tcp->u_arg; 622 return decode_select(tcp, args, BITNESS_32); 623} 624#endif 625 626static const struct xlat epollctls[] = { 627#ifdef EPOLL_CTL_ADD 628 { EPOLL_CTL_ADD, "EPOLL_CTL_ADD" }, 629#endif 630#ifdef EPOLL_CTL_MOD 631 { EPOLL_CTL_MOD, "EPOLL_CTL_MOD" }, 632#endif 633#ifdef EPOLL_CTL_DEL 634 { EPOLL_CTL_DEL, "EPOLL_CTL_DEL" }, 635#endif 636 { 0, NULL } 637}; 638 639static const struct xlat epollevents[] = { 640#ifdef EPOLLIN 641 { EPOLLIN, "EPOLLIN" }, 642#endif 643#ifdef EPOLLPRI 644 { EPOLLPRI, "EPOLLPRI" }, 645#endif 646#ifdef EPOLLOUT 647 { EPOLLOUT, "EPOLLOUT" }, 648#endif 649#ifdef EPOLLRDNORM 650 { EPOLLRDNORM, "EPOLLRDNORM" }, 651#endif 652#ifdef EPOLLRDBAND 653 { EPOLLRDBAND, "EPOLLRDBAND" }, 654#endif 655#ifdef EPOLLWRNORM 656 { EPOLLWRNORM, "EPOLLWRNORM" }, 657#endif 658#ifdef EPOLLWRBAND 659 { EPOLLWRBAND, "EPOLLWRBAND" }, 660#endif 661#ifdef EPOLLMSG 662 { EPOLLMSG, "EPOLLMSG" }, 663#endif 664#ifdef EPOLLERR 665 { EPOLLERR, "EPOLLERR" }, 666#endif 667#ifdef EPOLLHUP 668 { EPOLLHUP, "EPOLLHUP" }, 669#endif 670#ifdef EPOLLONESHOT 671 { EPOLLONESHOT, "EPOLLONESHOT" }, 672#endif 673#ifdef EPOLLET 674 { EPOLLET, "EPOLLET" }, 675#endif 676 { 0, NULL } 677}; 678 679int 680sys_epoll_create(struct tcb *tcp) 681{ 682 if (entering(tcp)) 683 tprintf("%ld", tcp->u_arg[0]); 684 return 0; 685} 686 687int 688sys_epoll_create1(struct tcb *tcp) 689{ 690 if (entering(tcp)) 691 printflags(open_mode_flags, tcp->u_arg[0], "O_???"); 692 return 0; 693} 694 695#ifdef HAVE_SYS_EPOLL_H 696static void 697print_epoll_event(struct epoll_event *ev) 698{ 699 tprints("{"); 700 printflags(epollevents, ev->events, "EPOLL???"); 701 /* We cannot know what format the program uses, so print u32 and u64 702 which will cover every value. */ 703 tprintf(", {u32=%" PRIu32 ", u64=%" PRIu64 "}}", 704 ev->data.u32, ev->data.u64); 705} 706#endif 707 708int 709sys_epoll_ctl(struct tcb *tcp) 710{ 711 if (entering(tcp)) { 712 printfd(tcp, tcp->u_arg[0]); 713 tprints(", "); 714 printxval(epollctls, tcp->u_arg[1], "EPOLL_CTL_???"); 715 tprints(", "); 716 printfd(tcp, tcp->u_arg[2]); 717 tprints(", "); 718 if (tcp->u_arg[3] == 0) 719 tprints("NULL"); 720 else { 721#ifdef HAVE_SYS_EPOLL_H 722 struct epoll_event ev; 723 if (umove(tcp, tcp->u_arg[3], &ev) == 0) 724 print_epoll_event(&ev); 725 else 726#endif 727 tprints("{...}"); 728 } 729 } 730 return 0; 731} 732 733static void 734epoll_wait_common(struct tcb *tcp) 735{ 736 if (entering(tcp)) { 737 printfd(tcp, tcp->u_arg[0]); 738 tprints(", "); 739 } else { 740 if (syserror(tcp)) 741 tprintf("%lx", tcp->u_arg[1]); 742 else if (tcp->u_rval == 0) 743 tprints("{}"); 744 else { 745#ifdef HAVE_SYS_EPOLL_H 746 struct epoll_event ev, *start, *cur, *end; 747 int failed = 0; 748 749 tprints("{"); 750 start = (struct epoll_event *) tcp->u_arg[1]; 751 end = start + tcp->u_rval; 752 for (cur = start; cur < end; ++cur) { 753 if (cur > start) 754 tprints(", "); 755 if (umove(tcp, (long) cur, &ev) == 0) 756 print_epoll_event(&ev); 757 else { 758 tprints("?"); 759 failed = 1; 760 break; 761 } 762 } 763 tprints("}"); 764 if (failed) 765 tprintf(" %#lx", (long) start); 766#else 767 tprints("{...}"); 768#endif 769 } 770 tprintf(", %ld, %ld", tcp->u_arg[2], tcp->u_arg[3]); 771 } 772} 773 774int 775sys_epoll_wait(struct tcb *tcp) 776{ 777 epoll_wait_common(tcp); 778 return 0; 779} 780 781int 782sys_epoll_pwait(struct tcb *tcp) 783{ 784 epoll_wait_common(tcp); 785 if (exiting(tcp)) { 786 tprints(", "); 787 print_sigset(tcp, tcp->u_arg[4], 0); 788 } 789 return 0; 790} 791 792int 793sys_io_setup(struct tcb *tcp) 794{ 795 if (entering(tcp)) 796 tprintf("%ld, ", tcp->u_arg[0]); 797 else { 798 if (syserror(tcp)) 799 tprintf("0x%0lx", tcp->u_arg[1]); 800 else { 801 unsigned long user_id; 802 if (umove(tcp, tcp->u_arg[1], &user_id) == 0) 803 tprintf("{%lu}", user_id); 804 else 805 tprints("{...}"); 806 } 807 } 808 return 0; 809} 810 811int 812sys_io_destroy(struct tcb *tcp) 813{ 814 if (entering(tcp)) 815 tprintf("%lu", tcp->u_arg[0]); 816 return 0; 817} 818 819#ifdef HAVE_LIBAIO_H 820 821enum iocb_sub { 822 SUB_NONE, SUB_COMMON, SUB_POLL, SUB_VECTOR 823}; 824 825static const char * 826iocb_cmd_lookup(unsigned cmd, enum iocb_sub *sub) 827{ 828 static char buf[sizeof("%u /* SUB_??? */") + sizeof(int)*3]; 829 static const struct { 830 const char *name; 831 enum iocb_sub sub; 832 } cmds[] = { 833 { "pread", SUB_COMMON }, 834 { "pwrite", SUB_COMMON }, 835 { "fsync", SUB_NONE }, 836 { "fdsync", SUB_NONE }, 837 { "op4", SUB_NONE }, 838 { "poll", SUB_POLL }, 839 { "noop", SUB_NONE }, 840 { "preadv", SUB_VECTOR }, 841 { "pwritev", SUB_VECTOR }, 842 }; 843 844 if (cmd < ARRAY_SIZE(cmds)) { 845 *sub = cmds[cmd].sub; 846 return cmds[cmd].name; 847 } 848 *sub = SUB_NONE; 849 sprintf(buf, "%u /* SUB_??? */", cmd); 850 return buf; 851} 852 853/* Not defined in libaio.h */ 854#ifndef IOCB_RESFD 855# define IOCB_RESFD (1 << 0) 856#endif 857 858static void 859print_common_flags(struct iocb *iocb) 860{ 861 if (iocb->u.c.flags & IOCB_RESFD) 862 tprintf("resfd=%d, ", iocb->u.c.resfd); 863 if (iocb->u.c.flags & ~IOCB_RESFD) 864 tprintf("flags=%x, ", iocb->u.c.flags); 865} 866 867#endif /* HAVE_LIBAIO_H */ 868 869int 870sys_io_submit(struct tcb *tcp) 871{ 872 long nr; 873 if (entering(tcp)) { 874 tprintf("%lu, %ld, ", tcp->u_arg[0], tcp->u_arg[1]); 875 nr = tcp->u_arg[1]; 876 /* and if nr is negative? */ 877 if (nr == 0) 878 tprints("{}"); 879 else { 880#ifdef HAVE_LIBAIO_H 881 long i; 882 struct iocb *iocbp, **iocbs = (void *)tcp->u_arg[2]; 883 884 for (i = 0; i < nr; i++, iocbs++) { 885 enum iocb_sub sub; 886 struct iocb iocb; 887 if (i == 0) 888 tprints("{"); 889 else 890 tprints(", "); 891 892 if (umove(tcp, (unsigned long)iocbs, &iocbp) || 893 umove(tcp, (unsigned long)iocbp, &iocb)) { 894 tprints("{...}"); 895 continue; 896 } 897 tprints("{"); 898 if (iocb.data) 899 tprintf("data:%p, ", iocb.data); 900 if (iocb.key) 901 tprintf("key:%u, ", iocb.key); 902 tprintf("%s, ", iocb_cmd_lookup(iocb.aio_lio_opcode, &sub)); 903 if (iocb.aio_reqprio) 904 tprintf("reqprio:%d, ", iocb.aio_reqprio); 905 tprintf("filedes:%d", iocb.aio_fildes); 906 switch (sub) { 907 case SUB_COMMON: 908 if (iocb.aio_lio_opcode == IO_CMD_PWRITE) { 909 tprints(", str:"); 910 printstr(tcp, (unsigned long)iocb.u.c.buf, 911 iocb.u.c.nbytes); 912 } else { 913 tprintf(", buf:%p", iocb.u.c.buf); 914 } 915 tprintf(", nbytes:%lu, offset:%llx", 916 iocb.u.c.nbytes, 917 iocb.u.c.offset); 918 print_common_flags(&iocb); 919 break; 920 case SUB_VECTOR: 921 tprintf(", %llx, ", iocb.u.v.offset); 922 print_common_flags(&iocb); 923 tprint_iov(tcp, iocb.u.v.nr, 924 (unsigned long)iocb.u.v.vec, 925 iocb.aio_lio_opcode == IO_CMD_PWRITEV); 926 break; 927 case SUB_POLL: 928 tprintf(", %x", iocb.u.poll.events); 929 break; 930 case SUB_NONE: 931 break; 932 } 933 tprints("}"); 934 } 935 if (i) 936 tprints("}"); 937#else 938#warning "libaio-devel is not available => no io_submit decoding" 939 tprintf("%#lx", tcp->u_arg[2]); 940#endif 941 } 942 } 943 return 0; 944} 945 946int 947sys_io_cancel(struct tcb *tcp) 948{ 949 if (entering(tcp)) { 950#ifdef HAVE_LIBAIO_H 951 struct iocb iocb; 952#endif 953 tprintf("%lu, ", tcp->u_arg[0]); 954#ifdef HAVE_LIBAIO_H 955 if (umove(tcp, tcp->u_arg[1], &iocb) == 0) { 956 tprintf("{%p, %u, %hu, %hu, %d}, ", 957 iocb.data, iocb.key, 958 iocb.aio_lio_opcode, 959 iocb.aio_reqprio, iocb.aio_fildes); 960 } else 961#endif 962 tprints("{...}, "); 963 } else { 964 if (tcp->u_rval < 0) 965 tprints("{...}"); 966 else { 967#ifdef HAVE_LIBAIO_H 968 struct io_event event; 969 if (umove(tcp, tcp->u_arg[2], &event) == 0) 970 tprintf("{%p, %p, %ld, %ld}", 971 event.data, event.obj, 972 event.res, event.res2); 973 else 974#endif 975 tprints("{...}"); 976 } 977 } 978 return 0; 979} 980 981int 982sys_io_getevents(struct tcb *tcp) 983{ 984 if (entering(tcp)) { 985 tprintf("%ld, %ld, %ld, ", tcp->u_arg[0], tcp->u_arg[1], 986 tcp->u_arg[2]); 987 } else { 988 if (tcp->u_rval == 0) { 989 tprints("{}"); 990 } else { 991#ifdef HAVE_LIBAIO_H 992 struct io_event *events = (void *)tcp->u_arg[3]; 993 long i, nr = tcp->u_rval; 994 995 for (i = 0; i < nr; i++, events++) { 996 struct io_event event; 997 998 if (i == 0) 999 tprints("{"); 1000 else 1001 tprints(", "); 1002 1003 if (umove(tcp, (unsigned long)events, &event) != 0) { 1004 tprints("{...}"); 1005 continue; 1006 } 1007 tprintf("{%p, %p, %ld, %ld}", event.data, 1008 event.obj, event.res, event.res2); 1009 } 1010 tprints("}, "); 1011#else 1012 tprints("{...}"); 1013#endif 1014 } 1015 1016 print_timespec(tcp, tcp->u_arg[4]); 1017 } 1018 return 0; 1019} 1020#endif /* LINUX */ 1021 1022int 1023sys_select(struct tcb *tcp) 1024{ 1025 return decode_select(tcp, tcp->u_arg, BITNESS_CURRENT); 1026} 1027 1028#ifdef LINUX 1029int 1030sys_pselect6(struct tcb *tcp) 1031{ 1032 int rc = decode_select(tcp, tcp->u_arg, BITNESS_CURRENT); 1033 if (entering(tcp)) { 1034 struct { 1035 void *ss; 1036 unsigned long len; 1037 } data; 1038 if (umove(tcp, tcp->u_arg[5], &data) < 0) 1039 tprintf(", %#lx", tcp->u_arg[5]); 1040 else { 1041 tprints(", {"); 1042 if (data.len < sizeof(long)) 1043 tprintf("%#lx", (long)data.ss); 1044 else 1045 print_sigset(tcp, (long)data.ss, 0); 1046 tprintf(", %lu}", data.len); 1047 } 1048 } 1049 return rc; 1050} 1051 1052static int 1053do_eventfd(struct tcb *tcp, int flags_arg) 1054{ 1055 if (entering(tcp)) { 1056 tprintf("%lu", tcp->u_arg[0]); 1057 if (flags_arg >= 0) { 1058 tprints(", "); 1059 printflags(open_mode_flags, tcp->u_arg[flags_arg], "O_???"); 1060 } 1061 } 1062 return 0; 1063} 1064 1065int 1066sys_eventfd(struct tcb *tcp) 1067{ 1068 return do_eventfd(tcp, -1); 1069} 1070 1071int 1072sys_eventfd2(struct tcb *tcp) 1073{ 1074 return do_eventfd(tcp, 1); 1075} 1076#endif 1077