syscall.c revision b046b38593b6bca6b6c49ac1fcc09dd5cd4c94b2
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 * 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 * 3. The name of the author may not be used to endorse or promote products 16 * derived from this software without specific prior written permission. 17 * 18 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 19 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 20 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 21 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 22 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 23 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 24 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 25 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 26 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 27 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 28 * 29 * $Id$ 30 */ 31 32#include "defs.h" 33 34#include <signal.h> 35#include <time.h> 36#include <errno.h> 37#include <sys/user.h> 38#include <sys/syscall.h> 39#include <sys/param.h> 40 41#ifdef HAVE_SYS_REG_H 42#include <sys/reg.h> 43# define PTRACE_PEEKUSR PTRACE_PEEKUSER 44#endif 45 46#if defined(linux) && !defined(__GLIBC__) 47#include <linux/ptrace.h> 48#endif 49 50#ifndef SYS_ERRLIST_DECLARED 51extern int sys_nerr; 52extern char *sys_errlist[]; 53#endif /* SYS_ERRLIST_DECLARED */ 54 55#ifdef LINUX 56#ifndef ERESTARTSYS 57#define ERESTARTSYS 512 58#endif 59#ifndef ERESTARTNOINTR 60#define ERESTARTNOINTR 513 61#endif 62#ifndef ERESTARTNOHAND 63#define ERESTARTNOHAND 514 /* restart if no handler.. */ 64#endif 65#ifndef ENOIOCTLCMD 66#define ENOIOCTLCMD 515 /* No ioctl command */ 67#endif 68#ifndef NSIG 69#define NSIG 32 70#endif 71#ifdef ARM 72#undef NSIG 73#define NSIG 32 74#endif 75#endif /* LINUX */ 76 77#include "syscall.h" 78 79/* Define these shorthand notations to simplify the syscallent files. */ 80#define TF TRACE_FILE 81#define TI TRACE_IPC 82#define TN TRACE_NETWORK 83#define TP TRACE_PROCESS 84#define TS TRACE_SIGNAL 85 86struct sysent sysent0[] = { 87#include "syscallent.h" 88}; 89int nsyscalls0 = sizeof sysent0 / sizeof sysent0[0]; 90 91#if SUPPORTED_PERSONALITIES >= 2 92struct sysent sysent1[] = { 93#include "syscallent1.h" 94}; 95int nsyscalls1 = sizeof sysent1 / sizeof sysent1[0]; 96#endif /* SUPPORTED_PERSONALITIES >= 2 */ 97 98#if SUPPORTED_PERSONALITIES >= 3 99struct sysent sysent2[] = { 100#include "syscallent2.h" 101}; 102int nsyscalls2 = sizeof sysent2 / sizeof sysent2[0]; 103#endif /* SUPPORTED_PERSONALITIES >= 3 */ 104 105struct sysent *sysent; 106int nsyscalls; 107 108/* Now undef them since short defines cause wicked namespace pollution. */ 109#undef TF 110#undef TI 111#undef TN 112#undef TP 113#undef TS 114 115char *errnoent0[] = { 116#include "errnoent.h" 117}; 118int nerrnos0 = sizeof errnoent0 / sizeof errnoent0[0]; 119 120#if SUPPORTED_PERSONALITIES >= 2 121char *errnoent1[] = { 122#include "errnoent1.h" 123}; 124int nerrnos1 = sizeof errnoent1 / sizeof errnoent1[0]; 125#endif /* SUPPORTED_PERSONALITIES >= 2 */ 126 127#if SUPPORTED_PERSONALITIES >= 3 128char *errnoent2[] = { 129#include "errnoent2.h" 130}; 131int nerrnos2 = sizeof errnoent2 / sizeof errnoent2[0]; 132#endif /* SUPPORTED_PERSONALITIES >= 3 */ 133 134char **errnoent; 135int nerrnos; 136 137int current_personality; 138 139int 140set_personality(personality) 141int personality; 142{ 143 switch (personality) { 144 case 0: 145 errnoent = errnoent0; 146 nerrnos = nerrnos0; 147 sysent = sysent0; 148 nsyscalls = nsyscalls0; 149 ioctlent = ioctlent0; 150 nioctlents = nioctlents0; 151 signalent = signalent0; 152 nsignals = nsignals0; 153 break; 154 155#if SUPPORTED_PERSONALITIES >= 2 156 case 1: 157 errnoent = errnoent1; 158 nerrnos = nerrnos1; 159 sysent = sysent1; 160 nsyscalls = nsyscalls1; 161 ioctlent = ioctlent1; 162 nioctlents = nioctlents1; 163 signalent = signalent1; 164 nsignals = nsignals1; 165 break; 166#endif /* SUPPORTED_PERSONALITIES >= 2 */ 167 168#if SUPPORTED_PERSONALITIES >= 3 169 case 2: 170 errnoent = errnoent2; 171 nerrnos = nerrnos2; 172 sysent = sysent2; 173 nsyscalls = nsyscalls2; 174 ioctlent = ioctlent2; 175 nioctlents = nioctlents2; 176 signalent = signalent2; 177 nsignals = nsignals2; 178 break; 179#endif /* SUPPORTED_PERSONALITIES >= 3 */ 180 181 default: 182 return -1; 183 } 184 185 current_personality = personality; 186 return 0; 187} 188 189int qual_flags[MAX_QUALS]; 190 191static int call_count[MAX_QUALS]; 192static int error_count[MAX_QUALS]; 193static struct timeval tv_count[MAX_QUALS]; 194static int sorted_count[MAX_QUALS]; 195 196static struct timeval shortest = { 1000000, 0 }; 197 198static int lookup_syscall(), lookup_signal(), lookup_fault(), lookup_desc(); 199 200static struct qual_options { 201 int bitflag; 202 char *option_name; 203 int (*lookup)(); 204 char *argument_name; 205} qual_options[] = { 206 { QUAL_TRACE, "trace", lookup_syscall, "system call" }, 207 { QUAL_TRACE, "t", lookup_syscall, "system call" }, 208 { QUAL_ABBREV, "abbrev", lookup_syscall, "system call" }, 209 { QUAL_ABBREV, "a", lookup_syscall, "system call" }, 210 { QUAL_VERBOSE, "verbose", lookup_syscall, "system call" }, 211 { QUAL_VERBOSE, "v", lookup_syscall, "system call" }, 212 { QUAL_RAW, "raw", lookup_syscall, "system call" }, 213 { QUAL_RAW, "x", lookup_syscall, "system call" }, 214 { QUAL_SIGNAL, "signal", lookup_signal, "signal" }, 215 { QUAL_SIGNAL, "signals", lookup_signal, "signal" }, 216 { QUAL_SIGNAL, "s", lookup_signal, "signal" }, 217 { QUAL_FAULT, "fault", lookup_fault, "fault" }, 218 { QUAL_FAULT, "faults", lookup_fault, "fault" }, 219 { QUAL_FAULT, "m", lookup_fault, "fault" }, 220 { QUAL_READ, "read", lookup_desc, "descriptor" }, 221 { QUAL_READ, "reads", lookup_desc, "descriptor" }, 222 { QUAL_READ, "r", lookup_desc, "descriptor" }, 223 { QUAL_WRITE, "write", lookup_desc, "descriptor" }, 224 { QUAL_WRITE, "writes", lookup_desc, "descriptor" }, 225 { QUAL_WRITE, "w", lookup_desc, "descriptor" }, 226 { 0, NULL, NULL, NULL }, 227}; 228 229static int 230lookup_syscall(s) 231char *s; 232{ 233 int i; 234 235 for (i = 0; i < nsyscalls; i++) { 236 if (strcmp(s, sysent[i].sys_name) == 0) 237 return i; 238 } 239 return -1; 240} 241 242static int 243lookup_signal(s) 244char *s; 245{ 246 int i; 247 char buf[32]; 248 249 if (s && *s && isdigit(*s)) 250 return atoi(s); 251 strcpy(buf, s); 252 s = buf; 253 for (i = 0; s[i]; i++) 254 s[i] = toupper(s[i]); 255 if (strncmp(s, "SIG", 3) == 0) 256 s += 3; 257 for (i = 0; i <= NSIG; i++) { 258 if (strcmp(s, signame(i) + 3) == 0) 259 return i; 260 } 261 return -1; 262} 263 264static int 265lookup_fault(s) 266char *s; 267{ 268 return -1; 269} 270 271static int 272lookup_desc(s) 273char *s; 274{ 275 if (s && *s && isdigit(*s)) 276 return atoi(s); 277 return -1; 278} 279 280static int 281lookup_class(s) 282char *s; 283{ 284 if (strcmp(s, "file") == 0) 285 return TRACE_FILE; 286 if (strcmp(s, "ipc") == 0) 287 return TRACE_IPC; 288 if (strcmp(s, "network") == 0) 289 return TRACE_NETWORK; 290 if (strcmp(s, "process") == 0) 291 return TRACE_PROCESS; 292 if (strcmp(s, "signal") == 0) 293 return TRACE_SIGNAL; 294 return -1; 295} 296 297void 298qualify(s) 299char *s; 300{ 301 struct qual_options *opt; 302 int not; 303 char *p; 304 int i, n; 305 306 opt = &qual_options[0]; 307 for (i = 0; (p = qual_options[i].option_name); i++) { 308 n = strlen(p); 309 if (strncmp(s, p, n) == 0 && s[n] == '=') { 310 opt = &qual_options[i]; 311 s += n + 1; 312 break; 313 } 314 } 315 not = 0; 316 if (*s == '!') { 317 not = 1; 318 s++; 319 } 320 if (strcmp(s, "none") == 0) { 321 not = 1 - not; 322 s = "all"; 323 } 324 if (strcmp(s, "all") == 0) { 325 for (i = 0; i < MAX_QUALS; i++) { 326 if (not) 327 qual_flags[i] &= ~opt->bitflag; 328 else 329 qual_flags[i] |= opt->bitflag; 330 } 331 return; 332 } 333 for (i = 0; i < MAX_QUALS; i++) { 334 if (not) 335 qual_flags[i] |= opt->bitflag; 336 else 337 qual_flags[i] &= ~opt->bitflag; 338 } 339 for (p = strtok(s, ","); p; p = strtok(NULL, ",")) { 340 if (opt->bitflag == QUAL_TRACE && (n = lookup_class(p)) > 0) { 341 for (i = 0; i < MAX_QUALS; i++) { 342 if (sysent[i].sys_flags & n) { 343 if (not) 344 qual_flags[i] &= ~opt->bitflag; 345 else 346 qual_flags[i] |= opt->bitflag; 347 } 348 } 349 continue; 350 } 351 if ((n = (*opt->lookup)(p)) < 0) { 352 fprintf(stderr, "strace: invalid %s `%s'\n", 353 opt->argument_name, p); 354 exit(1); 355 } 356 if (not) 357 qual_flags[n] &= ~opt->bitflag; 358 else 359 qual_flags[n] |= opt->bitflag; 360 } 361 return; 362} 363 364static void 365dumpio(tcp) 366struct tcb *tcp; 367{ 368 if (syserror(tcp)) 369 return; 370 if (tcp->u_arg[0] < 0 || tcp->u_arg[0] >= MAX_QUALS) 371 return; 372#ifdef __arm__ 373 switch (tcp->scno + __NR_SYSCALL_BASE) { 374#else 375 switch (tcp->scno) { 376#endif 377 case SYS_read: 378#ifdef SYS_recv 379 case SYS_recv: 380#endif 381#ifdef SYS_recvfrom 382 case SYS_recvfrom: 383#endif 384 if (qual_flags[tcp->u_arg[0]] & QUAL_READ) 385 dumpstr(tcp, tcp->u_arg[1], tcp->u_rval); 386 break; 387 case SYS_write: 388#ifdef SYS_send 389 case SYS_send: 390#endif 391#ifdef SYS_sendto 392 case SYS_sendto: 393#endif 394 if (qual_flags[tcp->u_arg[0]] & QUAL_WRITE) 395 dumpstr(tcp, tcp->u_arg[1], tcp->u_arg[2]); 396 break; 397 } 398} 399 400enum subcall_style { shift_style, deref_style, mask_style, door_style }; 401 402#if !(defined(LINUX) && defined(ALPHA)) 403 404const int socket_map [] = { 405 /* SYS_SOCKET */ 97, 406 /* SYS_BIND */ 104, 407 /* SYS_CONNECT */ 98, 408 /* SYS_LISTEN */ 106, 409 /* SYS_ACCEPT */ 99, 410 /* SYS_GETSOCKNAME */ 150, 411 /* SYS_GETPEERNAME */ 141, 412 /* SYS_SOCKETPAIR */ 135, 413 /* SYS_SEND */ 101, 414 /* SYS_RECV */ 102, 415 /* SYS_SENDTO */ 133, 416 /* SYS_RECVFROM */ 125, 417 /* SYS_SHUTDOWN */ 134, 418 /* SYS_SETSOCKOPT */ 105, 419 /* SYS_GETSOCKOPT */ 118, 420 /* SYS_SENDMSG */ 114, 421 /* SYS_RECVMSG */ 113 422}; 423 424void 425sparc_socket_decode (tcp) 426struct tcb *tcp; 427{ 428 volatile long addr; 429 volatile int i, n; 430 431 if (tcp->u_arg [0] < 1 || tcp->u_arg [0] > sizeof(socket_map)/sizeof(int)+1){ 432 return; 433 } 434 tcp->scno = socket_map [tcp->u_arg [0]-1]; 435 n = tcp->u_nargs = sysent [tcp->scno].nargs; 436 addr = tcp->u_arg [1]; 437 for (i = 0; i < n; i++){ 438 int arg; 439 if (umoven (tcp, addr, sizeof (arg), (void *) &arg) < 0) 440 arg = 0; 441 tcp->u_arg [i] = arg; 442 addr += sizeof (arg); 443 } 444} 445 446static void 447decode_subcall(tcp, subcall, nsubcalls, style) 448struct tcb *tcp; 449int subcall; 450int nsubcalls; 451enum subcall_style style; 452{ 453 int i, addr, mask, arg; 454 455 if (tcp->u_arg[0] < 0 || tcp->u_arg[0] >= nsubcalls) 456 return; 457 switch (style) { 458 case shift_style: 459 tcp->scno = subcall + tcp->u_arg[0]; 460 if (sysent[tcp->scno].nargs != -1) 461 tcp->u_nargs = sysent[tcp->scno].nargs; 462 else 463 tcp->u_nargs--; 464 for (i = 0; i < tcp->u_nargs; i++) 465 tcp->u_arg[i] = tcp->u_arg[i + 1]; 466 break; 467 case deref_style: 468 tcp->scno = subcall + tcp->u_arg[0]; 469 addr = tcp->u_arg[1]; 470 for (i = 0; i < sysent[tcp->scno].nargs; i++) { 471 if (umove(tcp, addr, &arg) < 0) 472 arg = 0; 473 tcp->u_arg[i] = arg; 474 addr += sizeof(arg); 475 } 476 tcp->u_nargs = sysent[tcp->scno].nargs; 477 break; 478 case mask_style: 479 mask = (tcp->u_arg[0] >> 8) & 0xff; 480 tcp->u_arg[0] &= 0xff; 481 for (i = 0; mask; i++) 482 mask >>= 1; 483 tcp->scno = subcall + i; 484 if (sysent[tcp->scno].nargs != -1) 485 tcp->u_nargs = sysent[tcp->scno].nargs; 486 break; 487 case door_style: 488 /* 489 * Oh, yuck. The call code is the *sixth* argument. 490 */ 491 tcp->scno = subcall + tcp->u_arg[5]; 492 if (sysent[tcp->scno].nargs != -1) 493 tcp->u_nargs = sysent[tcp->scno].nargs; 494 else 495 tcp->u_nargs--; 496 break; 497 } 498} 499#endif 500 501struct tcb *tcp_last = NULL; 502 503static int 504internal_syscall(tcp) 505struct tcb *tcp; 506{ 507 /* 508 * We must always trace a few critical system calls in order to 509 * correctly support following forks in the presence of tracing 510 * qualifiers. 511 */ 512#ifdef __arm__ 513 switch (tcp->scno + __NR_SYSCALL_BASE) { 514#else 515 switch (tcp->scno) { 516#endif 517#ifdef SYS_fork 518 case SYS_fork: 519#endif 520#ifdef SYS_vfork 521 case SYS_vfork: 522#endif 523#ifdef SYS_clone 524 case SYS_clone: 525#endif 526 internal_fork(tcp); 527 break; 528 529#ifdef SYS_execv 530 case SYS_execv: 531#endif 532#ifdef SYS_execve 533 case SYS_execve: 534#endif 535 internal_exec(tcp); 536 break; 537 538#ifdef SYS_wait 539 case SYS_wait: 540#endif 541#ifdef SYS_wait4 542 case SYS_wait4: 543#endif 544#ifdef SYS_waitpid 545 case SYS_waitpid: 546#endif 547#ifdef SYS_waitsys 548 case SYS_waitsys: 549#endif 550 internal_wait(tcp); 551 break; 552 553#ifdef SYS_exit 554 case SYS_exit: 555#endif 556 internal_exit(tcp); 557 break; 558 } 559 return 0; 560} 561 562int 563trace_syscall(tcp) 564struct tcb *tcp; 565{ 566 int sys_res; 567 struct timeval tv; 568 long scno = 0; 569#ifdef LINUX 570#if defined (I386) 571 long eax; 572#elif defined (POWERPC) 573 long result,flags; 574#elif defined (M68K) 575 int d0; 576#elif defined (ARM) 577 int r0; 578#elif defined (ALPHA) 579 long r0; 580 long a3; 581#elif defined (SPARC) 582 struct pt_regs regs; 583 unsigned long trap; 584#endif 585#endif /* LINUX */ 586 587#ifndef SVR4 588 int pid = tcp->pid; 589#endif /* !SVR4 */ 590 591 /* Measure the exit time as early as possible to avoid errors. */ 592 if (dtime && (tcp->flags & TCB_INSYSCALL)) 593 gettimeofday(&tv, NULL); 594#ifdef LINUX 595#if defined (POWERPC) 596 if (upeek(pid, 4*PT_R0, &scno) < 0) 597 return -1; 598 if (!(tcp->flags & TCB_INSYSCALL)) { 599 /* Check if we return from execve. */ 600 if (scno == 0 && (tcp->flags & TCB_WAITEXECVE)) { 601 tcp->flags &= ~TCB_WAITEXECVE; 602 return 0; 603 } 604 } 605#elif defined (I386) 606 if (upeek(pid, 4*ORIG_EAX, &scno) < 0) 607 return -1; 608#elif defined (ARM) 609 { 610 long pc; 611 upeek(pid, 4*15, &pc); 612 umoven(tcp, pc-4, 4, (char *)&scno); 613 scno &= 0x000fffff; 614 } 615#elif defined (M68K) 616 if (upeek(pid, 4*PT_ORIG_D0, &scno) < 0) 617 return -1; 618#elif defined (ALPHA) 619 if (upeek(pid, REG_A3, &a3) < 0) 620 return -1; 621 622 if (!(tcp->flags & TCB_INSYSCALL)) { 623 if (upeek(pid, REG_R0, &scno) < 0) 624 return -1; 625 626 /* Check if we return from execve. */ 627 if (scno == 0 && tcp->flags & TCB_WAITEXECVE) { 628 tcp->flags &= ~TCB_WAITEXECVE; 629 return 0; 630 } 631 632 /* 633 * Do some sanity checks to figure out if it's 634 * really a syscall entry 635 */ 636 if (scno < 0 || scno > nsyscalls) { 637 if (a3 == 0 || a3 == -1) { 638 if (debug) 639 fprintf (stderr, "stray syscall exit: r0 = %ld\n", scno); 640 return 0; 641 } 642 } 643 } 644 else { 645 if (upeek(pid, REG_R0, &r0) < 0) 646 return -1; 647 } 648#elif defined (SPARC) 649 /* Everything we need is in the current register set. */ 650 if (ptrace(PTRACE_GETREGS,pid,(char *)®s,0) < 0) 651 return -1; 652 653 memmove (®s.u_regs [1], ®s.u_regs [0], 654 sizeof (regs.u_regs) - sizeof (regs.u_regs [0])); 655 656 /* If we are entering, then disassemble the syscall trap. */ 657 if (!(tcp->flags & TCB_INSYSCALL)) { 658 /* Retrieve the syscall trap instruction. */ 659 errno = 0; 660 trap = ptrace(PTRACE_PEEKTEXT,pid,(char *)regs.pc,0); 661 if (errno) 662 return -1; 663 664 /* Disassemble the trap to see what personality to use. */ 665 switch (trap) { 666 case 0x91d02010: 667 /* Linux/SPARC syscall trap. */ 668 set_personality(0); 669 break; 670 case 0x91d0206d: 671 /* Linux/SPARC64 syscall trap. */ 672 fprintf(stderr,"syscall: Linux/SPARC64 not supported yet\n"); 673 return -1; 674 case 0x91d02000: 675 /* SunOS syscall trap. (pers 1) */ 676 fprintf(stderr,"syscall: SunOS no support\n"); 677 return -1; 678 case 0x91d02008: 679 /* Solaris 2.x syscall trap. (per 2) */ 680 set_personality(1); 681 break; 682 case 0x91d02009: 683 /* NetBSD/FreeBSD syscall trap. */ 684 fprintf(stderr,"syscall: NetBSD/FreeBSD not supported\n"); 685 return -1; 686 case 0x91d02027: 687 /* Solaris 2.x gettimeofday */ 688 set_personality(1); 689 break; 690 default: 691 /* Unknown syscall trap. */ 692 if(tcp->flags & TCB_WAITEXECVE) { 693 tcp->flags &= ~TCB_WAITEXECVE; 694 return 0; 695 } 696 fprintf(stderr,"syscall: unknown syscall trap %08x %08x\n", trap, regs.pc); 697 return -1; 698 } 699 700 /* Extract the system call number from the registers. */ 701 if (trap == 0x91d02027) 702 scno = 156; 703 else 704 scno = regs.u_regs[UREG_G1]; 705 if (scno == 0) { 706 scno = regs.u_regs[UREG_I0]; 707 memmove (®s.u_regs[UREG_I0], ®s.u_regs[UREG_I1], 7*sizeof(regs.u_regs[0])); 708 } 709 } 710#endif 711#endif /* LINUX */ 712#ifdef SUNOS4 713 if (upeek(pid, uoff(u_arg[7]), &scno) < 0) 714 return -1; 715#endif 716#ifdef SVR4 717#ifdef HAVE_PR_SYSCALL 718 scno = tcp->status.pr_syscall; 719#else /* !HAVE_PR_SYSCALL */ 720 scno = tcp->status.pr_what; 721#endif /* !HAVE_PR_SYSCALL */ 722 if (!(tcp->flags & TCB_INSYSCALL)) { 723 if (tcp->status.pr_why != PR_SYSENTRY) { 724 if ( 725 scno == SYS_fork 726#ifdef SYS_vfork 727 || scno == SYS_vfork 728#endif /* SYS_vfork */ 729 ) { 730 /* We are returning in the child, fake it. */ 731 tcp->status.pr_why = PR_SYSENTRY; 732 trace_syscall(tcp); 733 tcp->status.pr_why = PR_SYSEXIT; 734 } 735 else { 736 fprintf(stderr, "syscall: missing entry\n"); 737 tcp->flags |= TCB_INSYSCALL; 738 } 739 } 740 } 741 else { 742 if (tcp->status.pr_why != PR_SYSEXIT) { 743 fprintf(stderr, "syscall: missing exit\n"); 744 tcp->flags &= ~TCB_INSYSCALL; 745 } 746 } 747#endif /* SVR4 */ 748#ifdef SUNOS4 749 if (!(tcp->flags & TCB_INSYSCALL)) { 750 if (scno == 0) { 751 fprintf(stderr, "syscall: missing entry\n"); 752 tcp->flags |= TCB_INSYSCALL; 753 } 754 } 755 else { 756 if (scno != 0) { 757 if (debug) { 758 /* 759 * This happens when a signal handler 760 * for a signal which interrupted a 761 * a system call makes another system call. 762 */ 763 fprintf(stderr, "syscall: missing exit\n"); 764 } 765 tcp->flags &= ~TCB_INSYSCALL; 766 } 767 } 768#endif /* SUNOS4 */ 769#ifdef LINUX 770#if defined (I386) 771 if (upeek(pid, 4*EAX, &eax) < 0) 772 return -1; 773 if (eax != -ENOSYS && !(tcp->flags & TCB_INSYSCALL)) { 774 if (debug) 775 fprintf(stderr, "stray syscall exit: eax = %ld\n", eax); 776 return 0; 777 } 778#elif defined (POWERPC) 779# define SO_MASK 0x10000000 780 if (upeek(pid, 4*PT_CCR, &flags) < 0) 781 return -1; 782 if (upeek(pid, 4*PT_R3, &result) < 0) 783 return -1; 784 if (flags & SO_MASK) 785 result = -result; 786#elif defined (M68K) 787 if (upeek(pid, 4*PT_D0, &d0) < 0) 788 return -1; 789 if (d0 != -ENOSYS && !(tcp->flags & TCB_INSYSCALL)) { 790 if (debug) 791 fprintf(stderr, "stray syscall exit: d0 = %ld\n", d0); 792 return 0; 793 } 794#elif defined (ARM) 795 if (upeek(pid, 4*0, (long *)&r0) < 0) 796 return -1; 797 if ( 0 && r0 != -ENOSYS && !(tcp->flags & TCB_INSYSCALL)) { 798 if (debug) 799 fprintf(stderr, "stray syscall exit: d0 = %ld\n", r0); 800 return 0; 801 } 802#else 803#endif 804#endif /* LINUX */ 805 806 if (tcp->flags & TCB_INSYSCALL) { 807 long u_error; 808 809#ifdef LINUX 810#ifdef I386 811 if (eax < 0 && -eax < nerrnos) { 812 tcp->u_rval = -1; 813 u_error = -eax; 814 } 815 else { 816 tcp->u_rval = eax; 817 u_error = 0; 818 } 819#else /* !I386 */ 820#ifdef POWERPC 821 if (result && (unsigned) -result < nerrnos) { 822 tcp->u_rval = -1; 823 u_error = -result; 824 } 825 else { 826 tcp->u_rval = result; 827 u_error = 0; 828 } 829#else /* !POWERPC */ 830#ifdef M68K 831 if (d0 && (unsigned) -d0 < nerrnos) { 832 tcp->u_rval = -1; 833 u_error = -d0; 834 } 835 else { 836 tcp->u_rval = d0; 837 u_error = 0; 838 } 839#else /* !M68K */ 840#ifdef ARM 841 if (r0 && (unsigned) -r0 < nerrnos) { 842 tcp->u_rval = -1; 843 u_error = -r0; 844 } 845 else { 846 tcp->u_rval = r0; 847 u_error = 0; 848 } 849#else /* !ARM */ 850#ifdef ALPHA 851 if (a3) { 852 tcp->u_rval = -1; 853 u_error = r0; 854 } 855 else { 856 tcp->u_rval = r0; 857 u_error = 0; 858 } 859#else /* !ALPHA */ 860#ifdef SPARC 861 if (regs.psr & PSR_C) { 862 tcp->u_rval = -1; 863 u_error = regs.u_regs[UREG_I0]; 864 } 865 else { 866 tcp->u_rval = regs.u_regs[UREG_I0]; 867 u_error = 0; 868 } 869#endif /* SPARC */ 870#endif /* ALPHA */ 871#endif /* ARM */ 872#endif /* M68K */ 873#endif /* POWERPC */ 874#endif /* I386 */ 875#endif /* LINUX */ 876#ifdef SUNOS4 877 /* get error code from user struct */ 878 if (upeek(pid, uoff(u_error), &u_error) < 0) 879 return -1; 880 u_error >>= 24; /* u_error is a char */ 881 882 /* get system call return value */ 883 if (upeek(pid, uoff(u_rval1), &tcp->u_rval) < 0) 884 return -1; 885#endif /* SUNOS4 */ 886#ifdef SVR4 887#ifdef SPARC 888 /* Judicious guessing goes a long way. */ 889 if (tcp->status.pr_reg[R_PSR] & 0x100000) { 890 tcp->u_rval = -1; 891 u_error = tcp->status.pr_reg[R_O0]; 892 } 893 else { 894 tcp->u_rval = tcp->status.pr_reg[R_O0]; 895 u_error = 0; 896 } 897#endif /* SPARC */ 898#ifdef I386 899 /* Wanna know how to kill an hour single-stepping? */ 900 if (tcp->status.pr_reg[EFL] & 0x1) { 901 tcp->u_rval = -1; 902 u_error = tcp->status.pr_reg[EAX]; 903 } 904 else { 905 tcp->u_rval = tcp->status.pr_reg[EAX]; 906 u_error = 0; 907 } 908#endif /* I386 */ 909#ifdef MIPS 910 if (tcp->status.pr_reg[CTX_A3]) { 911 tcp->u_rval = -1; 912 u_error = tcp->status.pr_reg[CTX_V0]; 913 } 914 else { 915 tcp->u_rval = tcp->status.pr_reg[CTX_V0]; 916 u_error = 0; 917 } 918#endif /* MIPS */ 919#endif /* SVR4 */ 920 tcp->u_error = u_error; 921 922 internal_syscall(tcp); 923 if (!(qual_flags[tcp->scno] & QUAL_TRACE)) { 924 tcp->flags &= ~TCB_INSYSCALL; 925 return 0; 926 } 927 928 if (tcp->flags & TCB_REPRINT) { 929 printleader(tcp); 930 tprintf("<... "); 931 if (tcp->scno >= nsyscalls) 932 tprintf("syscall_%lu", tcp->scno); 933 else 934 tprintf("%s", sysent[tcp->scno].sys_name); 935 tprintf(" resumed> "); 936 } 937 938 if (cflag) { 939 call_count[tcp->scno]++; 940 if (u_error) 941 error_count[tcp->scno]++; 942 tv_sub(&tv, &tv, &tcp->etime); 943#ifdef LINUX 944 if (tv_cmp(&tv, &tcp->dtime) > 0) { 945 static struct timeval one_tick = 946 { 0, 1000000 / HZ }; 947 948 if (tv_nz(&tcp->dtime)) 949 tv = tcp->dtime; 950 else if (tv_cmp(&tv, &one_tick) > 0) { 951 if (tv_cmp(&shortest, &one_tick) < 0) 952 tv = shortest; 953 else 954 tv = one_tick; 955 } 956 } 957#endif /* LINUX */ 958 if (tv_cmp(&tv, &shortest) < 0) 959 shortest = tv; 960 tv_add(&tv_count[tcp->scno], 961 &tv_count[tcp->scno], &tv); 962 tcp->flags &= ~TCB_INSYSCALL; 963 return 0; 964 } 965 966 if (tcp->scno >= nsyscalls 967 || (qual_flags[tcp->scno] & QUAL_RAW)) 968 sys_res = printargs(tcp); 969 else 970 sys_res = (*sysent[tcp->scno].sys_func)(tcp); 971 u_error = tcp->u_error; 972 tprintf(") "); 973 tabto(acolumn); 974 if (qual_flags[tcp->scno] & QUAL_RAW) { 975 if (u_error) 976 tprintf("= -1 (errno %ld)", u_error); 977 else 978 tprintf("= %#lx", tcp->u_rval); 979 } 980 else if (!(sys_res & RVAL_NONE) && u_error) { 981#ifdef LINUX 982 switch (u_error) { 983 case ERESTARTSYS: 984 tprintf("= ? ERESTARTSYS (To be restarted)"); 985 break; 986 case ERESTARTNOINTR: 987 tprintf("= ? ERESTARTNOINTR (To be restarted)"); 988 break; 989 case ERESTARTNOHAND: 990 tprintf("= ? ERESTARTNOHAND (To be restarted)"); 991 break; 992 default: 993#endif /* LINUX */ 994 tprintf("= -1 "); 995 if (u_error < nerrnos && u_error < sys_nerr) 996 tprintf("%s (%s)", errnoent[u_error], 997 sys_errlist[u_error]); 998 else if (u_error < nerrnos) 999 tprintf("%s (errno %ld)", 1000 errnoent[u_error], u_error); 1001 else if (u_error < sys_nerr) 1002 tprintf("ERRNO_%ld (%s)", u_error, 1003 sys_errlist[u_error]); 1004 else 1005 tprintf("E??? (errno %ld)", u_error); 1006#ifdef LINUX 1007 break; 1008 } 1009#endif /* LINUX */ 1010 } 1011 else { 1012 if (sys_res & RVAL_NONE) 1013 tprintf("= ?"); 1014 else { 1015 switch (sys_res & RVAL_MASK) { 1016 case RVAL_HEX: 1017 tprintf("= %#lx", tcp->u_rval); 1018 break; 1019 case RVAL_OCTAL: 1020 tprintf("= %#lo", tcp->u_rval); 1021 break; 1022 case RVAL_UDECIMAL: 1023 tprintf("= %lu", tcp->u_rval); 1024 break; 1025 case RVAL_DECIMAL: 1026 tprintf("= %ld", tcp->u_rval); 1027 break; 1028 default: 1029 fprintf(stderr, 1030 "invalid rval format\n"); 1031 break; 1032 } 1033 } 1034 if ((sys_res & RVAL_STR) && tcp->auxstr) 1035 tprintf(" (%s)", tcp->auxstr); 1036 } 1037 if (dtime) { 1038 tv_sub(&tv, &tv, &tcp->etime); 1039 tprintf(" <%ld.%06ld>", 1040 (long) tv.tv_sec, (long) tv.tv_usec); 1041 } 1042 printtrailer(tcp); 1043 1044 dumpio(tcp); 1045 if (fflush(tcp->outf) == EOF) 1046 return -1; 1047 tcp->flags &= ~TCB_INSYSCALL; 1048 return 0; 1049 } 1050 1051 /* Entering system call */ 1052 tcp->scno = scno; 1053#ifdef LINUX 1054#if defined (ALPHA) 1055 { 1056 int i; 1057 tcp->u_nargs = sysent[tcp->scno].nargs; 1058 for (i = 0; i < tcp->u_nargs; i++) { 1059 /* WTA: if scno is out-of-bounds this will bomb. Add range-check 1060 * for scno somewhere above here! 1061 */ 1062 if (upeek(pid, REG_A0+i, &tcp->u_arg[i]) < 0) 1063 return -1; 1064 } 1065 } 1066#elif defined (POWERPC) 1067 { 1068 int i; 1069 tcp->u_nargs = sysent[tcp->scno].nargs; 1070 for (i = 0; i < tcp->u_nargs; i++) { 1071 if (upeek(pid, (i==0) ? (4*PT_ORIG_R3) : ((i+PT_R3)*4), &tcp->u_arg[i]) < 0) 1072 return -1; 1073 } 1074 } 1075#elif defined (SPARC) 1076 { 1077 int i, offset; 1078 1079 offset = UREG_I0; 1080 tcp->u_nargs = sysent[tcp->scno].nargs; 1081 for (i = 0; i < tcp->u_nargs; i++) 1082 tcp->u_arg[i] = regs.u_regs[offset + i]; 1083 } 1084#else 1085 { 1086 int i; 1087 tcp->u_nargs = sysent[tcp->scno].nargs; 1088 for (i = 0; i < tcp->u_nargs; i++) { 1089 if (upeek(pid, i*4, &tcp->u_arg[i]) < 0) 1090 return -1; 1091 } 1092 } 1093#endif 1094#endif /* LINUX */ 1095#ifdef SUNOS4 1096 { 1097 int i; 1098 tcp->u_nargs = sysent[tcp->scno].nargs; 1099 for (i = 0; i < tcp->u_nargs; i++) { 1100 struct user *u; 1101 1102 if (upeek(pid, uoff(u_arg[0]) + 1103 (i*sizeof(u->u_arg[0])), &tcp->u_arg[i]) < 0) 1104 return -1; 1105 } 1106 } 1107#endif /* SUNOS4 */ 1108#ifdef SVR4 1109#ifdef MIPS 1110 /* 1111 * SGI is broken: even though it has pr_sysarg, it doesn't 1112 * set them on system call entry. Get a clue. 1113 */ 1114 if (sysent[tcp->scno].nargs != -1) 1115 tcp->u_nargs = sysent[tcp->scno].nargs; 1116 else 1117 tcp->u_nargs = tcp->status.pr_nsysarg; 1118 if (tcp->u_nargs > 4) { 1119 memcpy(tcp->u_arg, &tcp->status.pr_reg[CTX_A0], 1120 4*sizeof(tcp->u_arg[0])); 1121 umoven(tcp, tcp->status.pr_reg[CTX_SP] + 16, 1122 (tcp->u_nargs - 4)*sizeof(tcp->u_arg[0]), (char *) (tcp->u_arg + 4)); 1123 } 1124 else { 1125 memcpy(tcp->u_arg, &tcp->status.pr_reg[CTX_A0], 1126 tcp->u_nargs*sizeof(tcp->u_arg[0])); 1127 } 1128#else /* !MIPS */ 1129#ifdef HAVE_PR_SYSCALL 1130 if (sysent[tcp->scno].nargs != -1) 1131 tcp->u_nargs = sysent[tcp->scno].nargs; 1132 else 1133 tcp->u_nargs = tcp->status.pr_nsysarg; 1134 { 1135 int i; 1136 for (i = 0; i < tcp->u_nargs; i++) 1137 tcp->u_arg[i] = tcp->status.pr_sysarg[i]; 1138 } 1139#else /* !HAVE_PR_SYSCALL */ 1140#ifdef I386 1141 if (sysent[tcp->scno].nargs != -1) 1142 tcp->u_nargs = sysent[tcp->scno].nargs; 1143 else 1144 tcp->u_nargs = 5; 1145 umoven(tcp, tcp->status.pr_reg[UESP] + 4, 1146 tcp->u_nargs*sizeof(tcp->u_arg[0]), (char *) tcp->u_arg); 1147#endif /* I386 */ 1148#endif /* !HAVE_PR_SYSCALL */ 1149#endif /* !MIPS */ 1150#endif /* SVR4 */ 1151#ifdef __arm__ 1152 switch (tcp->scno + __NR_SYSCALL_BASE) { 1153#else 1154 switch (tcp->scno) { 1155#endif 1156#ifdef LINUX 1157#if !defined (ALPHA) && !defined(SPARC) 1158 case SYS_socketcall: 1159 decode_subcall(tcp, SYS_socket_subcall, 1160 SYS_socket_nsubcalls, deref_style); 1161 break; 1162 case SYS_ipc: 1163 decode_subcall(tcp, SYS_ipc_subcall, 1164 SYS_ipc_nsubcalls, shift_style); 1165 break; 1166#endif /* !ALPHA && !SPARC */ 1167#ifdef SPARC 1168 case SYS_socketcall: 1169 sparc_socket_decode (tcp); 1170 break; 1171#endif 1172#endif /* LINUX */ 1173#ifdef SVR4 1174#ifdef SYS_pgrpsys_subcall 1175 case SYS_pgrpsys: 1176 decode_subcall(tcp, SYS_pgrpsys_subcall, 1177 SYS_pgrpsys_nsubcalls, shift_style); 1178 break; 1179#endif /* SYS_pgrpsys_subcall */ 1180#ifdef SYS_sigcall_subcall 1181 case SYS_sigcall: 1182 decode_subcall(tcp, SYS_sigcall_subcall, 1183 SYS_sigcall_nsubcalls, mask_style); 1184 break; 1185#endif /* SYS_sigcall_subcall */ 1186 case SYS_msgsys: 1187 decode_subcall(tcp, SYS_msgsys_subcall, 1188 SYS_msgsys_nsubcalls, shift_style); 1189 break; 1190 case SYS_shmsys: 1191 decode_subcall(tcp, SYS_shmsys_subcall, 1192 SYS_shmsys_nsubcalls, shift_style); 1193 break; 1194 case SYS_semsys: 1195 decode_subcall(tcp, SYS_semsys_subcall, 1196 SYS_semsys_nsubcalls, shift_style); 1197 break; 1198#if 0 /* broken */ 1199 case SYS_utssys: 1200 decode_subcall(tcp, SYS_utssys_subcall, 1201 SYS_utssys_nsubcalls, shift_style); 1202 break; 1203#endif 1204 case SYS_sysfs: 1205 decode_subcall(tcp, SYS_sysfs_subcall, 1206 SYS_sysfs_nsubcalls, shift_style); 1207 break; 1208 case SYS_spcall: 1209 decode_subcall(tcp, SYS_spcall_subcall, 1210 SYS_spcall_nsubcalls, shift_style); 1211 break; 1212#ifdef SYS_context_subcall 1213 case SYS_context: 1214 decode_subcall(tcp, SYS_context_subcall, 1215 SYS_context_nsubcalls, shift_style); 1216 break; 1217#endif /* SYS_context_subcall */ 1218#ifdef SYS_door_subcall 1219 case SYS_door: 1220 decode_subcall(tcp, SYS_door_subcall, 1221 SYS_door_nsubcalls, door_style); 1222 break; 1223#endif /* SYS_door_subcall */ 1224#endif /* SVR4 */ 1225#ifdef SUNOS4 1226 case SYS_semsys: 1227 decode_subcall(tcp, SYS_semsys_subcall, 1228 SYS_semsys_nsubcalls, shift_style); 1229 break; 1230 case SYS_msgsys: 1231 decode_subcall(tcp, SYS_msgsys_subcall, 1232 SYS_msgsys_nsubcalls, shift_style); 1233 break; 1234 case SYS_shmsys: 1235 decode_subcall(tcp, SYS_shmsys_subcall, 1236 SYS_shmsys_nsubcalls, shift_style); 1237 break; 1238#endif 1239 } 1240 1241 internal_syscall(tcp); 1242 if (!(qual_flags[tcp->scno] & QUAL_TRACE)) { 1243 tcp->flags |= TCB_INSYSCALL; 1244 return 0; 1245 } 1246 1247 if (cflag) { 1248 gettimeofday(&tcp->etime, NULL); 1249 tcp->flags |= TCB_INSYSCALL; 1250 return 0; 1251 } 1252 1253 printleader(tcp); 1254 tcp->flags &= ~TCB_REPRINT; 1255 tcp_last = tcp; 1256 if (tcp->scno >= nsyscalls) 1257 tprintf("syscall_%lu(", tcp->scno); 1258 else 1259 tprintf("%s(", sysent[tcp->scno].sys_name); 1260 if (tcp->scno >= nsyscalls || 1261 ((qual_flags[tcp->scno] & QUAL_RAW) && tcp->scno != SYS_exit)) 1262 sys_res = printargs(tcp); 1263 else 1264 sys_res = (*sysent[tcp->scno].sys_func)(tcp); 1265 if (fflush(tcp->outf) == EOF) 1266 return -1; 1267 tcp->flags |= TCB_INSYSCALL; 1268 /* Measure the entrance time as late as possible to avoid errors. */ 1269 if (dtime) 1270 gettimeofday(&tcp->etime, NULL); 1271 return sys_res; 1272} 1273 1274int 1275printargs(tcp) 1276struct tcb *tcp; 1277{ 1278 if (entering(tcp)) { 1279 int i; 1280 1281 for (i = 0; i < tcp->u_nargs; i++) 1282 tprintf("%s%#lx", i ? ", " : "", tcp->u_arg[i]); 1283 } 1284 return 0; 1285} 1286 1287long 1288getrval2(tcp) 1289struct tcb *tcp; 1290{ 1291 long val = -1; 1292 1293#ifdef LINUX 1294#ifdef SPARC 1295 struct pt_regs regs; 1296 if (ptrace(PTRACE_GETREGS,tcp->pid,(char *)®s,0) < 0) 1297 return -1; 1298 val = regs.u_regs[UREG_I1]; 1299#endif /* SPARC */ 1300#endif /* LINUX */ 1301 1302#ifdef SUNOS4 1303 if (upeek(tcp->pid, uoff(u_rval2), &val) < 0) 1304 return -1; 1305#endif /* SUNOS4 */ 1306 1307#ifdef SVR4 1308#ifdef SPARC 1309 val = tcp->status.pr_reg[R_O1]; 1310#endif /* SPARC */ 1311#ifdef I386 1312 val = tcp->status.pr_reg[EDX]; 1313#endif /* I386 */ 1314#ifdef MIPS 1315 val = tcp->status.pr_reg[CTX_V1]; 1316#endif /* MIPS */ 1317#endif /* SVR4 */ 1318 1319 return val; 1320} 1321 1322/* 1323 * Apparently, indirect system calls have already be converted by ptrace(2), 1324 * so if you see "indir" this program has gone astray. 1325 */ 1326int 1327sys_indir(tcp) 1328struct tcb *tcp; 1329{ 1330 int i, scno, nargs; 1331 1332 if (entering(tcp)) { 1333 if ((scno = tcp->u_arg[0]) > nsyscalls) { 1334 fprintf(stderr, "Bogus syscall: %u\n", scno); 1335 return 0; 1336 } 1337 nargs = sysent[scno].nargs; 1338 tprintf("%s", sysent[scno].sys_name); 1339 for (i = 0; i < nargs; i++) 1340 tprintf(", %#lx", tcp->u_arg[i+1]); 1341 } 1342 return 0; 1343} 1344 1345static int 1346time_cmp(a, b) 1347void *a; 1348void *b; 1349{ 1350 return -tv_cmp(&tv_count[*((int *) a)], &tv_count[*((int *) b)]); 1351} 1352 1353static int 1354syscall_cmp(a, b) 1355void *a; 1356void *b; 1357{ 1358 return strcmp(sysent[*((int *) a)].sys_name, 1359 sysent[*((int *) b)].sys_name); 1360} 1361 1362static int 1363count_cmp(a, b) 1364void *a; 1365void *b; 1366{ 1367 int m = call_count[*((int *) a)], n = call_count[*((int *) b)]; 1368 1369 return (m < n) ? 1 : (m > n) ? -1 : 0; 1370} 1371 1372static int (*sortfun)(); 1373static struct timeval overhead = { -1, -1 }; 1374 1375void 1376set_sortby(sortby) 1377char *sortby; 1378{ 1379 if (strcmp(sortby, "time") == 0) 1380 sortfun = time_cmp; 1381 else if (strcmp(sortby, "calls") == 0) 1382 sortfun = count_cmp; 1383 else if (strcmp(sortby, "name") == 0) 1384 sortfun = syscall_cmp; 1385 else if (strcmp(sortby, "nothing") == 0) 1386 sortfun = NULL; 1387 else { 1388 fprintf(stderr, "invalid sortby: `%s'\n", sortby); 1389 exit(1); 1390 } 1391} 1392 1393void set_overhead(n) 1394int n; 1395{ 1396 overhead.tv_sec = n / 1000000; 1397 overhead.tv_usec = n % 1000000; 1398} 1399 1400void 1401call_summary(outf) 1402FILE *outf; 1403{ 1404 int i, j; 1405 int call_cum, error_cum; 1406 struct timeval tv_cum, dtv; 1407 double percent; 1408 char *dashes = "-------------------------"; 1409 char error_str[16]; 1410 1411 call_cum = error_cum = tv_cum.tv_sec = tv_cum.tv_usec = 0; 1412 if (overhead.tv_sec == -1) { 1413 tv_mul(&overhead, &shortest, 8); 1414 tv_div(&overhead, &overhead, 10); 1415 } 1416 for (i = 0; i < nsyscalls; i++) { 1417 sorted_count[i] = i; 1418 if (call_count[i] == 0) 1419 continue; 1420 tv_mul(&dtv, &overhead, call_count[i]); 1421 tv_sub(&tv_count[i], &tv_count[i], &dtv); 1422 call_cum += call_count[i]; 1423 error_cum += error_count[i]; 1424 tv_add(&tv_cum, &tv_cum, &tv_count[i]); 1425 } 1426 if (sortfun) 1427 qsort((void *) sorted_count, nsyscalls, sizeof(int), sortfun); 1428 fprintf(outf, "%6.6s %11.11s %11.11s %9.9s %9.9s %s\n", 1429 "% time", "seconds", "usecs/call", 1430 "calls", "errors", "syscall"); 1431 fprintf(outf, "%6.6s %11.11s %11.11s %9.9s %9.9s %-16.16s\n", 1432 dashes, dashes, dashes, dashes, dashes, dashes); 1433 for (i = 0; i < nsyscalls; i++) { 1434 j = sorted_count[i]; 1435 if (call_count[j] == 0) 1436 continue; 1437 tv_div(&dtv, &tv_count[j], call_count[j]); 1438 if (error_count[j]) 1439 sprintf(error_str, "%d", error_count[j]); 1440 else 1441 error_str[0] = '\0'; 1442 percent = 100.0*tv_float(&tv_count[j])/tv_float(&tv_cum); 1443 fprintf(outf, "%6.2f %4ld.%06ld %11ld %9d %9.9s %s\n", 1444 percent, (long) tv_count[j].tv_sec, 1445 (long) tv_count[j].tv_usec, 1446 (long) 1000000 * dtv.tv_sec + dtv.tv_usec, 1447 call_count[j], error_str, sysent[j].sys_name); 1448 } 1449 fprintf(outf, "%6.6s %11.11s %11.11s %9.9s %9.9s %-16.16s\n", 1450 dashes, dashes, dashes, dashes, dashes, dashes); 1451 if (error_cum) 1452 sprintf(error_str, "%d", error_cum); 1453 else 1454 error_str[0] = '\0'; 1455 fprintf(outf, "%6.6s %4ld.%06ld %11.11s %9d %9.9s %s\n", 1456 "100.00", (long) tv_cum.tv_sec, (long) tv_cum.tv_usec, "", 1457 call_cum, error_str, "total"); 1458} 1459