strace.c revision 2ee6e45f36566e8735b35ffad40bfcc626a25a98
176baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman/* 276baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman * Copyright (c) 1991, 1992 Paul Kranenburg <pk@cs.few.eur.nl> 376baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman * Copyright (c) 1993 Branko Lankester <branko@hacktic.nl> 476baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman * Copyright (c) 1993, 1994, 1995, 1996 Rick Sladkey <jrs@world.std.com> 54dc8a2aec63e4fb5ee2688544c4de323ed5de3efWichert Akkerman * Copyright (c) 1996-1999 Wichert Akkerman <wichert@cistron.nl> 676baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman * All rights reserved. 776baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman * 876baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman * Redistribution and use in source and binary forms, with or without 976baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman * modification, are permitted provided that the following conditions 1076baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman * are met: 1176baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman * 1. Redistributions of source code must retain the above copyright 1276baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman * notice, this list of conditions and the following disclaimer. 1376baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman * 2. Redistributions in binary form must reproduce the above copyright 1476baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman * notice, this list of conditions and the following disclaimer in the 1576baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman * documentation and/or other materials provided with the distribution. 1676baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman * 3. The name of the author may not be used to endorse or promote products 1776baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman * derived from this software without specific prior written permission. 1876baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman * 1976baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 2076baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 2176baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 2276baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 2376baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 2476baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 2576baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 2676baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 2776baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 2876baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 2976baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman * 3076baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman * $Id$ 3176baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman */ 3276baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman 332ee6e45f36566e8735b35ffad40bfcc626a25a98Wichert Akkerman#include <sys/types.h> 3476baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman#include "defs.h" 3576baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman 3676baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman#include <signal.h> 3776baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman#include <errno.h> 3876baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman#include <sys/param.h> 3976baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman#include <fcntl.h> 4076baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman#include <sys/resource.h> 4176baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman#include <sys/wait.h> 4276baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman#include <sys/stat.h> 4376baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman#include <pwd.h> 4476baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman#include <grp.h> 4576baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman#include <string.h> 4676baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman 4776baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman#ifdef SVR4 4876baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman#include <sys/stropts.h> 4976baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman#include <poll.h> 50ea78f0f77185f7d6d0b2055805139d96e1be816cWichert Akkerman#ifdef HAVE_MP_PROCFS 519ce1a63eb20b069607c06f9645ac5a17b418a5f3Wichert Akkerman#include <sys/uio.h> 529ce1a63eb20b069607c06f9645ac5a17b418a5f3Wichert Akkerman#endif 5376baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman#endif 5476baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman 5576baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkermanint debug = 0, followfork = 0, followvfork = 0, interactive = 0; 5676baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkermanint rflag = 0, tflag = 0, dtime = 0, cflag = 0; 5776baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkermanint iflag = 0, xflag = 0, qflag = 0; 5876baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkermanint pflag_seen = 0; 5976baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman 6076baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkermanchar *username = NULL; 6176baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkermanuid_t run_uid; 6276baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkermangid_t run_gid; 6376baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman 6476baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkermanint acolumn = DEFAULT_ACOLUMN; 6576baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkermanint max_strlen = DEFAULT_STRLEN; 6676baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkermanchar *outfname = NULL; 6776baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert AkkermanFILE *outf; 6876baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkermanstruct tcb tcbtab[MAX_PROCS]; 6976baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkermanint nprocs; 7076baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkermanchar *progname; 7176baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkermanextern char version[]; 7276baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkermanextern char **environ; 7376baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman 7476baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkermanstatic struct tcb *pid2tcb P((int pid)); 7576baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkermanstatic int trace P((void)); 7676baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkermanstatic void cleanup P((void)); 7776baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkermanstatic void interrupt P((int sig)); 7876baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkermanstatic sigset_t empty_set, blocked_set; 7976baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman 8076baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman#ifdef HAVE_SIG_ATOMIC_T 8176baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkermanstatic volatile sig_atomic_t interrupted; 8276baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman#else /* !HAVE_SIG_ATOMIC_T */ 8376baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman#ifdef __STDC__ 8476baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkermanstatic volatile int interrupted; 8576baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman#else /* !__STDC__ */ 8676baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkermanstatic int interrupted; 8776baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman#endif /* !__STDC__ */ 8876baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman#endif /* !HAVE_SIG_ATOMIC_T */ 8976baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman 9076baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman#ifdef SVR4 9176baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman 9276baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkermanstatic struct tcb *pfd2tcb P((int pfd)); 9376baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkermanstatic void reaper P((int sig)); 9476baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkermanstatic void rebuild_pollv P((void)); 95e68d61c7d6dcf986d32c462e533ea46f85183db8Wichert Akkermanstruct pollfd pollv[MAX_PROCS]; 9676baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman 9776baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman#ifndef HAVE_POLLABLE_PROCFS 9876baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman 9976baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkermanstatic void proc_poll_open P((void)); 10076baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkermanstatic void proc_poller P((int pfd)); 10176baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman 10276baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkermanstruct proc_pollfd { 10376baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman int fd; 10476baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman int revents; 10576baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman int pid; 10676baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman}; 10776baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman 10876baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkermanstatic int poller_pid; 10976baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkermanstatic int proc_poll_pipe[2] = { -1, -1 }; 11076baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman 11176baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman#endif /* !HAVE_POLLABLE_PROCFS */ 11276baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman 113ea78f0f77185f7d6d0b2055805139d96e1be816cWichert Akkerman#ifdef HAVE_MP_PROCFS 1149ce1a63eb20b069607c06f9645ac5a17b418a5f3Wichert Akkerman#define POLLWANT POLLWRNORM 1159ce1a63eb20b069607c06f9645ac5a17b418a5f3Wichert Akkerman#else 1169ce1a63eb20b069607c06f9645ac5a17b418a5f3Wichert Akkerman#define POLLWANT POLLPRI 1179ce1a63eb20b069607c06f9645ac5a17b418a5f3Wichert Akkerman#endif 11876baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman#endif /* SVR4 */ 11976baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman 12076baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkermanstatic void 12176baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkermanusage(ofp, exitval) 12276baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert AkkermanFILE *ofp; 12376baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkermanint exitval; 12476baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman{ 12576baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman fprintf(ofp, "\ 12676baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkermanusage: strace [-dffhiqrtttTvVxx] [-a column] [-e expr] ... [-o file]\n\ 12776baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman [-p pid] ... [-s strsize] [-u username] [command [arg ...]]\n\ 12876baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman or: strace -c [-e expr] ... [-O overhead] [-S sortby] [command [arg ...]]\n\ 12976baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman-c -- count time, calls, and errors for each syscall and report summary\n\ 13076baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman-f -- follow forks, -ff -- with output into separate files\n\ 13176baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman-F -- attempt to follow vforks, -h -- print help message\n\ 13276baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman-i -- print instruction pointer at time of syscall\n\ 13376baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman-q -- suppress messages about attaching, detaching, etc.\n\ 13476baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman-r -- print relative timestamp, -t -- absolute timestamp, -tt -- with usecs\n\ 13576baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman-T -- print time spent in each syscall, -V -- print version\n\ 13676baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman-v -- verbose mode: print unabbreviated argv, stat, termio[s], etc. args\n\ 13776baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman-x -- print non-ascii strings in hex, -xx -- print all strings in hex\n\ 13876baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman-a column -- alignment COLUMN for printing syscall results (default %d)\n\ 13976baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman-e expr -- a qualifying expression: option=[!]all or option=[!]val1[,val2]...\n\ 14076baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman options: trace, abbrev, verbose, raw, signal, read, or write\n\ 14176baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman-o file -- send trace output to FILE instead of stderr\n\ 14276baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman-O overhead -- set overhead for tracing syscalls to OVERHEAD usecs\n\ 14376baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman-p pid -- trace process with process id PID, may be repeated\n\ 14476baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman-s strsize -- limit length of print strings to STRSIZE chars (default %d)\n\ 14576baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman-S sortby -- sort syscall counts by: time, calls, name, nothing (default %s)\n\ 14676baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman-u username -- run command as username handling setuid and/or setgid\n\ 14776baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman", DEFAULT_ACOLUMN, DEFAULT_STRLEN, DEFAULT_SORTBY); 14876baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman exit(exitval); 14976baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman} 15076baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman 15176baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman#ifdef SVR4 15276baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman#ifdef MIPS 15376baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkermanvoid 15476baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkermanfoobar() 15576baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman{ 15676baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman} 15776baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman#endif /* MIPS */ 15876baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman#endif /* SVR4 */ 15976baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman 16076baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkermanint 16176baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkermanmain(argc, argv) 16276baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkermanint argc; 16376baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkermanchar *argv[]; 16476baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman{ 16576baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman extern int optind; 16676baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman extern char *optarg; 16776baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman struct tcb *tcp; 16876baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman int c, pid = 0; 16976baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman struct sigaction sa; 17076baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman 17176baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman static char buf[BUFSIZ]; 17276baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman 17376baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman progname = argv[0]; 17476baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman outf = stderr; 17576baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman interactive = 1; 17676baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman qualify("trace=all"); 17776baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman qualify("abbrev=all"); 17876baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman qualify("verbose=all"); 17976baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman qualify("signal=all"); 18076baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman set_sortby(DEFAULT_SORTBY); 18176baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman set_personality(DEFAULT_PERSONALITY); 18276baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman while ((c = getopt(argc, argv, 18376baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman "+cdfFhiqrtTvVxa:e:o:O:p:s:S:u:")) != EOF) { 18476baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman switch (c) { 18576baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman case 'c': 18676baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman cflag++; 18776baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman dtime++; 18876baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman break; 18976baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman case 'd': 19076baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman debug++; 19176baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman break; 19276baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman case 'f': 19376baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman followfork++; 19476baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman break; 19576baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman case 'F': 19676baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman followvfork++; 19776baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman break; 19876baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman case 'h': 19976baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman usage(stdout, 0); 20076baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman break; 20176baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman case 'i': 20276baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman iflag++; 20376baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman break; 20476baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman case 'q': 20576baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman qflag++; 20676baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman break; 20776baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman case 'r': 20876baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman rflag++; 20976baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman tflag++; 21076baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman break; 21176baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman case 't': 21276baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman tflag++; 21376baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman break; 21476baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman case 'T': 21576baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman dtime++; 21676baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman break; 21776baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman case 'x': 21876baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman xflag++; 21976baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman break; 22076baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman case 'v': 22176baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman qualify("abbrev=none"); 22276baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman break; 22376baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman case 'V': 22476baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman printf("%s\n", version); 22576baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman exit(0); 22676baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman break; 22776baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman case 'a': 22876baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman acolumn = atoi(optarg); 22976baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman break; 23076baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman case 'e': 23176baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman qualify(optarg); 23276baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman break; 23376baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman case 'o': 23476baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman outfname = strdup(optarg); 23576baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman break; 23676baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman case 'O': 23776baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman set_overhead(atoi(optarg)); 23876baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman break; 23976baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman case 'p': 24076baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman if ((pid = atoi(optarg)) == 0) { 24176baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman fprintf(stderr, "%s: Invalid process id: %s\n", 24276baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman progname, optarg); 24376baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman break; 24476baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman } 24576baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman if (pid == getpid()) { 24654a4767f8609abfe2d7cb1802bc9e8dca97dd08fWichert Akkerman fprintf(stderr, "%s: I'm sorry, I can't let you do that, Dave.\n", progname); 24776baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman break; 24876baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman } 24976baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman if ((tcp = alloctcb(pid)) == NULL) { 25076baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman fprintf(stderr, "%s: tcb table full, please recompile strace\n", 25176baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman progname); 25276baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman exit(1); 25376baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman } 25476baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman tcp->flags |= TCB_ATTACHED; 25576baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman pflag_seen++; 25676baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman break; 25776baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman case 's': 25876baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman max_strlen = atoi(optarg); 25976baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman break; 26076baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman case 'S': 26176baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman set_sortby(optarg); 26276baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman break; 26376baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman case 'u': 26476baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman username = strdup(optarg); 26576baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman break; 26676baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman default: 26776baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman usage(stderr, 1); 26876baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman break; 26976baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman } 27076baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman } 27176baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman 27276baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman /* See if they want to run as another user. */ 27376baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman if (username != NULL) { 27476baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman struct passwd *pent; 27576baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman 27676baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman if (getuid() != 0 || geteuid() != 0) { 27776baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman fprintf(stderr, 27876baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman "%s: you must be root to use the -u option\n", 27976baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman progname); 28076baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman exit(1); 28176baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman } 28276baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman if ((pent = getpwnam(username)) == NULL) { 28376baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman fprintf(stderr, "%s: cannot find user `%s'\n", 28476baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman progname, optarg); 28576baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman exit(1); 28676baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman } 28776baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman run_uid = pent->pw_uid; 28876baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman run_gid = pent->pw_gid; 28976baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman } 29076baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman else { 29176baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman run_uid = getuid(); 29276baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman run_gid = getgid(); 29376baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman } 29476baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman 29576baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman#ifndef SVR4 29676baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman setreuid(geteuid(), getuid()); 29776baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman#endif 29876baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman 29976baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman /* See if they want to pipe the output. */ 30076baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman if (outfname && (outfname[0] == '|' || outfname[0] == '!')) { 30176baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman if ((outf = popen(outfname + 1, "w")) == NULL) { 30276baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman fprintf(stderr, "%s: can't popen '%s': %s\n", 30376baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman progname, outfname + 1, strerror(errno)); 30476baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman exit(1); 30576baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman } 30676baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman free(outfname); 30776baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman outfname = NULL; 30876baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman } 30976baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman 31076baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman /* Check if they want to redirect the output. */ 31176baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman if (outfname) { 31276baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman if ((outf = fopen(outfname, "w")) == NULL) { 31376baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman fprintf(stderr, "%s: can't fopen '%s': %s\n", 31476baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman progname, outfname, strerror(errno)); 31576baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman exit(1); 31676baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman } 31776baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman } 31876baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman 31976baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman#ifndef SVR4 32076baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman setreuid(geteuid(), getuid()); 32176baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman#endif 32276baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman 32376baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman if (!outfname) { 32476baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman qflag = 1; 32576baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman setvbuf(outf, buf, _IOLBF, BUFSIZ); 32676baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman } 32776baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman else if (optind < argc) 32876baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman interactive = 0; 32976baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman else 33076baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman qflag = 1; 33176baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman 33276baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman for (c = 0, tcp = tcbtab; c < MAX_PROCS; c++, tcp++) { 33376baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman /* Reinitialize the output since it may have changed. */ 33476baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman tcp->outf = outf; 33576baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman if (!(tcp->flags & TCB_INUSE) || !(tcp->flags & TCB_ATTACHED)) 33676baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman continue; 33776baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman#ifdef SVR4 33876baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman if (proc_open(tcp, 1) < 0) { 33976baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman fprintf(stderr, "trouble opening proc file\n"); 34076baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman droptcb(tcp); 34176baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman continue; 34276baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman } 34376baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman#else /* !SVR4 */ 34476baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman if (ptrace(PTRACE_ATTACH, tcp->pid, (char *) 1, 0) < 0) { 34576baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman perror("attach: ptrace(PTRACE_ATTACH, ...)"); 34676baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman droptcb(tcp); 34776baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman continue; 34876baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman } 34976baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman#endif /* !SVR4 */ 35076baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman if (!qflag) 35176baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman fprintf(stderr, 35276baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman "Process %u attached - interrupt to quit\n", 35376baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman pid); 35476baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman } 35576baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman 35676baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman if (optind < argc) { 35776baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman struct stat statbuf; 35876baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman char *filename; 35976baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman char pathname[MAXPATHLEN]; 36076baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman 36176baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman filename = argv[optind]; 36276baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman if (strchr(filename, '/')) 36376baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman strcpy(pathname, filename); 36476baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman#ifdef USE_DEBUGGING_EXEC 36576baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman /* 36676baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman * Debuggers customarily check the current directory 36776baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman * first regardless of the path but doing that gives 36876baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman * security geeks a panic attack. 36976baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman */ 37076baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman else if (stat(filename, &statbuf) == 0) 37176baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman strcpy(pathname, filename); 37276baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman#endif /* USE_DEBUGGING_EXEC */ 37376baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman else { 37476baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman char *path; 37576baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman int m, n, len; 37676baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman 37776baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman for (path = getenv("PATH"); path && *path; path += m) { 37876baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman if (strchr(path, ':')) { 37976baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman n = strchr(path, ':') - path; 38076baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman m = n + 1; 38176baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman } 38276baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman else 38376baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman m = n = strlen(path); 38476baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman if (n == 0) { 38576baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman getcwd(pathname, MAXPATHLEN); 38676baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman len = strlen(pathname); 38776baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman } 38876baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman else { 38976baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman strncpy(pathname, path, n); 39076baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman len = n; 39176baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman } 39276baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman if (len && pathname[len - 1] != '/') 39376baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman pathname[len++] = '/'; 39476baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman strcpy(pathname + len, filename); 39576baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman if (stat(pathname, &statbuf) == 0) 39676baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman break; 39776baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman } 39876baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman } 39976baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman if (stat(pathname, &statbuf) < 0) { 40076baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman fprintf(stderr, "%s: %s: command not found\n", 40176baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman progname, filename); 40276baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman exit(1); 40376baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman } 40476baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman switch (pid = fork()) { 40576baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman case -1: 40676baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman perror("strace: fork"); 40776baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman cleanup(); 40876baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman exit(1); 40976baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman break; 41076baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman case 0: { 41176baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman#ifdef SVR4 412789ed35db520a552ba5ea0a5cbe5b31efa7adde5Wichert Akkerman if (outf != stderr) close (fileno (outf)); 41376baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman#ifdef MIPS 41476baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman /* Kludge for SGI, see proc_open for details. */ 41576baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman sa.sa_handler = foobar; 41676baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman sa.sa_flags = 0; 41776baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman sigemptyset(&sa.sa_mask); 41876baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman sigaction(SIGINT, &sa, NULL); 41976baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman#endif /* MIPS */ 42076baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman pause(); 42176baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman#else /* !SVR4 */ 42276baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman if (ptrace(PTRACE_TRACEME, 0, (char *) 1, 0) < 0) { 42376baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman perror("strace: ptrace(PTRACE_TRACEME, ...)"); 42476baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman return -1; 42576baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman } 42676baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman if (debug) 42776baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman kill(getpid(), SIGSTOP); 42876baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman 42976baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman if (username != NULL || geteuid() == 0) { 43076baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman uid_t run_euid = run_uid; 43176baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman gid_t run_egid = run_gid; 43276baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman 43376baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman if (statbuf.st_mode & S_ISUID) 43476baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman run_euid = statbuf.st_uid; 43576baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman if (statbuf.st_mode & S_ISGID) 43676baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman run_egid = statbuf.st_gid; 43776baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman 43876baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman /* 43976baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman * It is important to set groups before we 44076baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman * lose privileges on setuid. 44176baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman */ 44276baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman if (username != NULL 44376baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman && initgroups(username, run_gid) < 0) { 44476baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman perror("initgroups"); 44576baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman exit(1); 44676baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman } 44776baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman if (setregid(run_gid, run_egid) < 0) { 44876baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman perror("setregid"); 44976baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman exit(1); 45076baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman } 45176baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman if (setreuid(run_uid, run_euid) < 0) { 45276baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman perror("setreuid"); 45376baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman exit(1); 45476baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman } 45576baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman } 45676baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman else 45776baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman setreuid(run_uid, run_uid); 45876baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman#endif /* !SVR4 */ 45976baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman 46076baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman execv(pathname, &argv[optind]); 46176baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman perror("strace: exec"); 46276baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman _exit(1); 46376baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman break; 46476baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman } 46576baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman default: 46676baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman if ((tcp = alloctcb(pid)) == NULL) { 46776baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman fprintf(stderr, "tcb table full\n"); 46876baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman cleanup(); 46976baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman exit(1); 47076baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman } 47176baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman#ifdef SVR4 47276baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman if (proc_open(tcp, 0) < 0) { 47376baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman fprintf(stderr, "trouble opening proc file\n"); 47476baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman cleanup(); 47576baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman exit(1); 47676baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman } 47776baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman#endif /* SVR4 */ 47876baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman#ifndef SVR4 47976baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman fake_execve(tcp, pathname, &argv[optind], environ); 48076baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman#endif 48176baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman break; 48276baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman } 48376baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman } 48476baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman else if (pflag_seen == 0) 48576baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman usage(stderr, 1); 48676baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman 48776baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman sigemptyset(&empty_set); 48876baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman sigemptyset(&blocked_set); 48976baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman sa.sa_handler = SIG_IGN; 49076baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman sigemptyset(&sa.sa_mask); 49176baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman sa.sa_flags = 0; 49276baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman sigaction(SIGTTOU, &sa, NULL); 49376baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman sigaction(SIGTTIN, &sa, NULL); 49476baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman if (interactive) { 49576baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman sigaddset(&blocked_set, SIGHUP); 49676baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman sigaddset(&blocked_set, SIGINT); 49776baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman sigaddset(&blocked_set, SIGQUIT); 49876baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman sigaddset(&blocked_set, SIGPIPE); 49976baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman sigaddset(&blocked_set, SIGTERM); 50076baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman sa.sa_handler = interrupt; 50176baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman#ifdef SUNOS4 50276baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman /* POSIX signals on sunos4.1 are a little broken. */ 50376baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman sa.sa_flags = SA_INTERRUPT; 50476baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman#endif /* SUNOS4 */ 50576baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman } 50676baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman sigaction(SIGHUP, &sa, NULL); 50776baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman sigaction(SIGINT, &sa, NULL); 50876baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman sigaction(SIGQUIT, &sa, NULL); 50976baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman sigaction(SIGPIPE, &sa, NULL); 51076baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman sigaction(SIGTERM, &sa, NULL); 51176baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman#ifdef SVR4 51276baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman sa.sa_handler = reaper; 51376baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman sigaction(SIGCHLD, &sa, NULL); 51476baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman#endif /* SVR4 */ 51576baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman 51676baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman if (trace() < 0) 51776baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman exit(1); 51876baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman cleanup(); 51976baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman exit(0); 52076baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman} 52176baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman 52276baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkermanvoid 52376baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkermannewoutf(tcp) 52476baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkermanstruct tcb *tcp; 52576baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman{ 52676baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman char name[MAXPATHLEN]; 52776baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman FILE *fp; 52876baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman 52976baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman if (outfname && followfork > 1) { 53076baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman sprintf(name, "%s.%u", outfname, tcp->pid); 53176baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman#ifndef SVR4 53276baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman setreuid(geteuid(), getuid()); 53376baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman#endif 53476baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman fp = fopen(name, "w"); 53576baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman#ifndef SVR4 53676baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman setreuid(geteuid(), getuid()); 53776baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman#endif 53876baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman if (fp == NULL) { 53976baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman perror("fopen"); 54076baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman return; 54176baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman } 54276baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman tcp->outf = fp; 54376baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman } 54476baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman return; 54576baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman} 54676baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman 54776baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkermanstruct tcb * 54876baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkermanalloctcb(pid) 54976baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkermanint pid; 55076baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman{ 55176baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman int i; 55276baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman struct tcb *tcp; 55376baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman 55476baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman for (i = 0, tcp = tcbtab; i < MAX_PROCS; i++, tcp++) { 55576baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman if ((tcp->flags & TCB_INUSE) == 0) { 55676baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman tcp->pid = pid; 55776baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman tcp->parent = NULL; 55876baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman tcp->nchildren = 0; 55976baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman tcp->flags = TCB_INUSE | TCB_STARTUP; 56076baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman tcp->outf = outf; /* Initialise to current out file */ 56176baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman tcp->stime.tv_sec = 0; 56276baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman tcp->stime.tv_usec = 0; 56376baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman tcp->pfd = -1; 56476baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman nprocs++; 56576baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman return tcp; 56676baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman } 56776baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman } 56876baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman return NULL; 56976baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman} 57076baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman 57176baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman#ifdef SVR4 57276baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkermanint 57376baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkermanproc_open(tcp, attaching) 57476baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkermanstruct tcb *tcp; 57576baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkermanint attaching; 57676baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman{ 57776baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman char proc[32]; 57876baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman long arg; 57976baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman sysset_t sc_enter, sc_exit; 58076baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman sigset_t signals; 58176baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman fltset_t faults; 58276baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman#ifndef HAVE_POLLABLE_PROCFS 58376baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman static int last_pfd; 58476baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman#endif 58576baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman 586ea78f0f77185f7d6d0b2055805139d96e1be816cWichert Akkerman#ifdef HAVE_MP_PROCFS 5879ce1a63eb20b069607c06f9645ac5a17b418a5f3Wichert Akkerman /* Open the process pseudo-files in /proc. */ 5889ce1a63eb20b069607c06f9645ac5a17b418a5f3Wichert Akkerman sprintf(proc, "/proc/%d/ctl", tcp->pid); 5899ce1a63eb20b069607c06f9645ac5a17b418a5f3Wichert Akkerman if ((tcp->pfd = open(proc, O_WRONLY|O_EXCL)) < 0) { 5909ce1a63eb20b069607c06f9645ac5a17b418a5f3Wichert Akkerman perror("strace: open(\"/proc/...\", ...)"); 5919ce1a63eb20b069607c06f9645ac5a17b418a5f3Wichert Akkerman return -1; 5929ce1a63eb20b069607c06f9645ac5a17b418a5f3Wichert Akkerman } 5939ce1a63eb20b069607c06f9645ac5a17b418a5f3Wichert Akkerman if ((arg = fcntl(tcp->pfd, F_GETFD)) < 0) { 5949ce1a63eb20b069607c06f9645ac5a17b418a5f3Wichert Akkerman perror("F_GETFD"); 5959ce1a63eb20b069607c06f9645ac5a17b418a5f3Wichert Akkerman return -1; 5969ce1a63eb20b069607c06f9645ac5a17b418a5f3Wichert Akkerman } 5979ce1a63eb20b069607c06f9645ac5a17b418a5f3Wichert Akkerman if (fcntl(tcp->pfd, F_SETFD, arg|FD_CLOEXEC) < 0) { 5989ce1a63eb20b069607c06f9645ac5a17b418a5f3Wichert Akkerman perror("F_SETFD"); 5999ce1a63eb20b069607c06f9645ac5a17b418a5f3Wichert Akkerman return -1; 6009ce1a63eb20b069607c06f9645ac5a17b418a5f3Wichert Akkerman } 6019ce1a63eb20b069607c06f9645ac5a17b418a5f3Wichert Akkerman sprintf(proc, "/proc/%d/status", tcp->pid); 6029ce1a63eb20b069607c06f9645ac5a17b418a5f3Wichert Akkerman if ((tcp->pfd_stat = open(proc, O_RDONLY|O_EXCL)) < 0) { 6039ce1a63eb20b069607c06f9645ac5a17b418a5f3Wichert Akkerman perror("strace: open(\"/proc/...\", ...)"); 6049ce1a63eb20b069607c06f9645ac5a17b418a5f3Wichert Akkerman return -1; 6059ce1a63eb20b069607c06f9645ac5a17b418a5f3Wichert Akkerman } 6069ce1a63eb20b069607c06f9645ac5a17b418a5f3Wichert Akkerman if ((arg = fcntl(tcp->pfd_stat, F_GETFD)) < 0) { 6079ce1a63eb20b069607c06f9645ac5a17b418a5f3Wichert Akkerman perror("F_GETFD"); 6089ce1a63eb20b069607c06f9645ac5a17b418a5f3Wichert Akkerman return -1; 6099ce1a63eb20b069607c06f9645ac5a17b418a5f3Wichert Akkerman } 6109ce1a63eb20b069607c06f9645ac5a17b418a5f3Wichert Akkerman if (fcntl(tcp->pfd_stat, F_SETFD, arg|FD_CLOEXEC) < 0) { 6119ce1a63eb20b069607c06f9645ac5a17b418a5f3Wichert Akkerman perror("F_SETFD"); 6129ce1a63eb20b069607c06f9645ac5a17b418a5f3Wichert Akkerman return -1; 6139ce1a63eb20b069607c06f9645ac5a17b418a5f3Wichert Akkerman } 6149ce1a63eb20b069607c06f9645ac5a17b418a5f3Wichert Akkerman sprintf(proc, "/proc/%d/as", tcp->pid); 6159ce1a63eb20b069607c06f9645ac5a17b418a5f3Wichert Akkerman if ((tcp->pfd_as = open(proc, O_RDONLY|O_EXCL)) < 0) { 6169ce1a63eb20b069607c06f9645ac5a17b418a5f3Wichert Akkerman perror("strace: open(\"/proc/...\", ...)"); 6179ce1a63eb20b069607c06f9645ac5a17b418a5f3Wichert Akkerman return -1; 6189ce1a63eb20b069607c06f9645ac5a17b418a5f3Wichert Akkerman } 6199ce1a63eb20b069607c06f9645ac5a17b418a5f3Wichert Akkerman if ((arg = fcntl(tcp->pfd_as, F_GETFD)) < 0) { 6209ce1a63eb20b069607c06f9645ac5a17b418a5f3Wichert Akkerman perror("F_GETFD"); 6219ce1a63eb20b069607c06f9645ac5a17b418a5f3Wichert Akkerman return -1; 6229ce1a63eb20b069607c06f9645ac5a17b418a5f3Wichert Akkerman } 6239ce1a63eb20b069607c06f9645ac5a17b418a5f3Wichert Akkerman if (fcntl(tcp->pfd_as, F_SETFD, arg|FD_CLOEXEC) < 0) { 6249ce1a63eb20b069607c06f9645ac5a17b418a5f3Wichert Akkerman perror("F_SETFD"); 6259ce1a63eb20b069607c06f9645ac5a17b418a5f3Wichert Akkerman return -1; 6269ce1a63eb20b069607c06f9645ac5a17b418a5f3Wichert Akkerman } 6279ce1a63eb20b069607c06f9645ac5a17b418a5f3Wichert Akkerman#else 62876baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman /* Open the process pseudo-file in /proc. */ 62976baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman sprintf(proc, "/proc/%d", tcp->pid); 63076baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman if ((tcp->pfd = open(proc, O_RDWR|O_EXCL)) < 0) { 63176baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman perror("strace: open(\"/proc/...\", ...)"); 63276baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman return -1; 63376baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman } 6349ce1a63eb20b069607c06f9645ac5a17b418a5f3Wichert Akkerman if ((arg = fcntl(tcp->pfd, F_GETFD)) < 0) { 6359ce1a63eb20b069607c06f9645ac5a17b418a5f3Wichert Akkerman perror("F_GETFD"); 6369ce1a63eb20b069607c06f9645ac5a17b418a5f3Wichert Akkerman return -1; 6379ce1a63eb20b069607c06f9645ac5a17b418a5f3Wichert Akkerman } 6389ce1a63eb20b069607c06f9645ac5a17b418a5f3Wichert Akkerman if (fcntl(tcp->pfd, F_SETFD, arg|FD_CLOEXEC) < 0) { 6399ce1a63eb20b069607c06f9645ac5a17b418a5f3Wichert Akkerman perror("F_SETFD"); 6409ce1a63eb20b069607c06f9645ac5a17b418a5f3Wichert Akkerman return -1; 6419ce1a63eb20b069607c06f9645ac5a17b418a5f3Wichert Akkerman } 6429ce1a63eb20b069607c06f9645ac5a17b418a5f3Wichert Akkerman#endif 64376baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman rebuild_pollv(); 64476baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman if (!attaching) { 64576baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman /* 64676baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman * Wait for the child to pause. Because of a race 64776baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman * condition we have to poll for the event. 64876baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman */ 64976baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman for (;;) { 6509ce1a63eb20b069607c06f9645ac5a17b418a5f3Wichert Akkerman if (IOCTL_STATUS (tcp) < 0) { 65176baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman perror("strace: PIOCSTATUS"); 65276baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman return -1; 65376baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman } 6549ce1a63eb20b069607c06f9645ac5a17b418a5f3Wichert Akkerman if (tcp->status.PR_FLAGS & PR_ASLEEP) 65576baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman break; 65676baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman } 65776baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman } 65876baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman /* Stop the process so that we own the stop. */ 6599ce1a63eb20b069607c06f9645ac5a17b418a5f3Wichert Akkerman if (IOCTL(tcp->pfd, PIOCSTOP, NULL) < 0) { 66076baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman perror("strace: PIOCSTOP"); 66176baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman return -1; 66276baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman } 66376baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman#ifdef PIOCSET 66476baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman /* Set Run-on-Last-Close. */ 66576baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman arg = PR_RLC; 6669ce1a63eb20b069607c06f9645ac5a17b418a5f3Wichert Akkerman if (IOCTL(tcp->pfd, PIOCSET, &arg) < 0) { 66776baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman perror("PIOCSET PR_RLC"); 66876baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman return -1; 66976baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman } 67076baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman /* Set or Reset Inherit-on-Fork. */ 67176baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman arg = PR_FORK; 6729ce1a63eb20b069607c06f9645ac5a17b418a5f3Wichert Akkerman if (IOCTL(tcp->pfd, followfork ? PIOCSET : PIOCRESET, &arg) < 0) { 67376baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman perror("PIOC{SET,RESET} PR_FORK"); 67476baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman return -1; 67576baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman } 67676baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman#else /* !PIOCSET */ 67776baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman if (ioctl(tcp->pfd, PIOCSRLC) < 0) { 67876baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman perror("PIOCSRLC"); 67976baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman return -1; 68076baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman } 68176baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman if (ioctl(tcp->pfd, followfork ? PIOCSFORK : PIOCRFORK) < 0) { 68276baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman perror("PIOC{S,R}FORK"); 68376baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman return -1; 68476baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman } 68576baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman#endif /* !PIOCSET */ 68676baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman /* Enable all syscall entries. */ 68776baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman prfillset(&sc_enter); 6889ce1a63eb20b069607c06f9645ac5a17b418a5f3Wichert Akkerman if (IOCTL(tcp->pfd, PIOCSENTRY, &sc_enter) < 0) { 68976baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman perror("PIOCSENTRY"); 69076baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman return -1; 69176baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman } 69276baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman /* Enable all syscall exits. */ 69376baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman prfillset(&sc_exit); 6949ce1a63eb20b069607c06f9645ac5a17b418a5f3Wichert Akkerman if (IOCTL(tcp->pfd, PIOCSEXIT, &sc_exit) < 0) { 69576baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman perror("PIOSEXIT"); 69676baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman return -1; 69776baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman } 69876baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman /* Enable all signals. */ 69976baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman prfillset(&signals); 7009ce1a63eb20b069607c06f9645ac5a17b418a5f3Wichert Akkerman if (IOCTL(tcp->pfd, PIOCSTRACE, &signals) < 0) { 70176baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman perror("PIOCSTRACE"); 70276baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman return -1; 70376baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman } 70476baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman /* Enable all faults. */ 70576baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman prfillset(&faults); 7069ce1a63eb20b069607c06f9645ac5a17b418a5f3Wichert Akkerman if (IOCTL(tcp->pfd, PIOCSFAULT, &faults) < 0) { 70776baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman perror("PIOCSFAULT"); 70876baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman return -1; 70976baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman } 71076baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman if (!attaching) { 71176baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman#ifdef MIPS 71276baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman /* 71376baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman * The SGI PRSABORT doesn't work for pause() so 71476baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman * we send it a caught signal to wake it up. 71576baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman */ 71676baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman kill(tcp->pid, SIGINT); 71776baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman#else /* !MIPS */ 71876baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman /* The child is in a pause(), abort it. */ 7199ce1a63eb20b069607c06f9645ac5a17b418a5f3Wichert Akkerman arg = PRSABORT; 7209ce1a63eb20b069607c06f9645ac5a17b418a5f3Wichert Akkerman if (IOCTL (tcp->pfd, PIOCRUN, &arg) < 0) { 72176baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman perror("PIOCRUN"); 72276baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman return -1; 72376baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman } 72476baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman#endif /* !MIPS */ 72576baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman for (;;) { 72676baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman /* Wait for the child to do something. */ 7279ce1a63eb20b069607c06f9645ac5a17b418a5f3Wichert Akkerman if (IOCTL_WSTOP (tcp) < 0) { 72876baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman perror("PIOCWSTOP"); 72976baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman return -1; 73076baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman } 7319ce1a63eb20b069607c06f9645ac5a17b418a5f3Wichert Akkerman if (tcp->status.PR_WHY == PR_SYSENTRY) { 73276baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman#ifdef HAVE_PR_SYSCALL 73376baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman int scno = tcp->status.pr_syscall; 73476baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman#else /* !HAVE_PR_SYSCALL */ 7359ce1a63eb20b069607c06f9645ac5a17b418a5f3Wichert Akkerman int scno = tcp->status.PR_WHAT; 73676baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman#endif /* !HAVE_PR_SYSCALL */ 73776baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman if (scno == SYS_execve) 73876baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman break; 73976baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman } 74076baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman /* Set it running: maybe execve will be next. */ 7419ce1a63eb20b069607c06f9645ac5a17b418a5f3Wichert Akkerman arg = 0; 7429ce1a63eb20b069607c06f9645ac5a17b418a5f3Wichert Akkerman if (IOCTL(tcp->pfd, PIOCRUN, &arg) < 0) { 74376baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman perror("PIOCRUN"); 74476baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman return -1; 74576baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman } 74676baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman } 74776baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman } 74876baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman#ifndef HAVE_POLLABLE_PROCFS 74976baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman if (proc_poll_pipe[0] != -1) 75076baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman proc_poller(tcp->pfd); 75176baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman else if (nprocs > 1) { 75276baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman proc_poll_open(); 75376baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman proc_poller(last_pfd); 75476baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman proc_poller(tcp->pfd); 75576baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman } 75676baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman last_pfd = tcp->pfd; 75776baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman#endif /* !HAVE_POLLABLE_PROCFS */ 75876baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman return 0; 75976baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman} 76076baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman 76176baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman#endif /* SVR4 */ 76276baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman 76376baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkermanstatic struct tcb * 76476baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkermanpid2tcb(pid) 76576baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkermanint pid; 76676baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman{ 76776baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman int i; 76876baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman struct tcb *tcp; 76976baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman 77076baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman for (i = 0, tcp = tcbtab; i < MAX_PROCS; i++, tcp++) { 77176baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman if (pid && tcp->pid != pid) 77276baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman continue; 77376baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman if (tcp->flags & TCB_INUSE) 77476baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman return tcp; 77576baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman } 77676baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman return NULL; 77776baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman} 77876baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman 77976baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman#ifdef SVR4 78076baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman 78176baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkermanstatic struct tcb * 78276baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkermanpfd2tcb(pfd) 78376baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkermanint pfd; 78476baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman{ 78576baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman int i; 78676baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman struct tcb *tcp; 78776baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman 78876baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman for (i = 0, tcp = tcbtab; i < MAX_PROCS; i++, tcp++) { 78976baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman if (tcp->pfd != pfd) 79076baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman continue; 79176baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman if (tcp->flags & TCB_INUSE) 79276baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman return tcp; 79376baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman } 79476baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman return NULL; 79576baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman} 79676baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman 79776baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman#endif /* SVR4 */ 79876baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman 79976baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkermanvoid 80076baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkermandroptcb(tcp) 80176baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkermanstruct tcb *tcp; 80276baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman{ 80376baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman if (tcp->pid == 0) 80476baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman return; 80576baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman nprocs--; 80676baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman tcp->pid = 0; 80776baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman tcp->flags = 0; 80876baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman if (tcp->pfd != -1) { 80976baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman close(tcp->pfd); 81076baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman tcp->pfd = -1; 81176baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman#ifdef SVR4 81276baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman rebuild_pollv(); 81376baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman#endif 81476baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman } 81576baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman if (tcp->parent != NULL) { 81676baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman tcp->parent->nchildren--; 81776baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman tcp->parent = NULL; 81876baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman } 81976baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman#if 0 82076baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman if (tcp->outf != stderr) 82176baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman fclose(tcp->outf); 82276baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman#endif 82376baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman tcp->outf = 0; 82476baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman} 82576baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman 82676baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman#ifndef SVR4 82776baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman 82876baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkermanstatic int 82976baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkermanresume(tcp) 83076baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkermanstruct tcb *tcp; 83176baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman{ 83276baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman if (tcp == NULL) 83376baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman return -1; 83476baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman 83576baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman if (!(tcp->flags & TCB_SUSPENDED)) { 83676baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman fprintf(stderr, "PANIC: pid %u not suspended\n", tcp->pid); 83776baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman return -1; 83876baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman } 83976baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman tcp->flags &= ~TCB_SUSPENDED; 84076baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman 84176baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman if (ptrace(PTRACE_SYSCALL, tcp->pid, (char *) 1, 0) < 0) { 84276baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman perror("resume: ptrace(PTRACE_SYSCALL, ...)"); 84376baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman return -1; 84476baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman } 84576baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman 84676baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman if (!qflag) 84776baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman fprintf(stderr, "Process %u resumed\n", tcp->pid); 84876baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman return 0; 84976baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman} 85076baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman 85176baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman#endif /* !SVR4 */ 85276baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman 85376baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman/* detach traced process; continue with sig */ 85476baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman 85576baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkermanstatic int 85676baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkermandetach(tcp, sig) 85776baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkermanstruct tcb *tcp; 85876baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkermanint sig; 85976baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman{ 86076baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman int error = 0; 86176baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman#ifdef LINUX 86276baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman int status; 86376baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman#endif 86476baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman 86576baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman if (tcp->flags & TCB_BPTSET) 86676baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman sig = SIGKILL; 86776baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman 86876baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman#ifdef LINUX 86976baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman /* 87076baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman * Linux wrongly insists the child be stopped 87176baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman * before detaching. Arghh. We go through hoops 87276baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman * to make a clean break of things. 87376baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman */ 874dacfb6ebd630641d851b6df94c3b4587969a6cfbWichert Akkerman#if defined(SPARC) 875dacfb6ebd630641d851b6df94c3b4587969a6cfbWichert Akkerman#undef PTRACE_DETACH 876dacfb6ebd630641d851b6df94c3b4587969a6cfbWichert Akkerman#define PTRACE_DETACH PTRACE_SUNDETACH 877dacfb6ebd630641d851b6df94c3b4587969a6cfbWichert Akkerman#endif 87876baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman if ((error = ptrace(PTRACE_DETACH, tcp->pid, (char *) 1, sig)) == 0) { 87976baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman /* On a clear day, you can see forever. */ 88076baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman } 88176baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman else if (errno != ESRCH) { 88276baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman /* Shouldn't happen. */ 88376baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman perror("detach: ptrace(PTRACE_DETACH, ...)"); 88476baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman } 88576baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman else if (kill(tcp->pid, 0) < 0) { 88676baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman if (errno != ESRCH) 88776baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman perror("detach: checking sanity"); 88876baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman } 88976baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman else if (kill(tcp->pid, SIGSTOP) < 0) { 89076baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman if (errno != ESRCH) 89176baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman perror("detach: stopping child"); 89276baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman } 89376baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman else { 89476baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman for (;;) { 89576baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman if (waitpid(tcp->pid, &status, 0) < 0) { 89676baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman if (errno != ECHILD) 89776baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman perror("detach: waiting"); 89876baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman break; 89976baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman } 90076baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman if (!WIFSTOPPED(status)) { 90176baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman /* Au revoir, mon ami. */ 90276baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman break; 90376baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman } 90476baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman if (WSTOPSIG(status) == SIGSTOP) { 90576baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman if ((error = ptrace(PTRACE_DETACH, 90676baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman tcp->pid, (char *) 1, sig)) < 0) { 90776baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman if (errno != ESRCH) 90876baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman perror("detach: ptrace(PTRACE_DETACH, ...)"); 90976baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman /* I died trying. */ 91076baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman } 91176baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman break; 91276baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman } 91376baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman if ((error = ptrace(PTRACE_CONT, tcp->pid, (char *) 1, 91476baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman WSTOPSIG(status) == SIGTRAP ? 91576baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman 0 : WSTOPSIG(status))) < 0) { 91676baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman if (errno != ESRCH) 91776baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman perror("detach: ptrace(PTRACE_CONT, ...)"); 91876baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman break; 91976baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman } 92076baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman } 92176baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman } 92276baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman#endif /* LINUX */ 92376baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman 92476baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman#if defined(SUNOS4) 92576baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman /* PTRACE_DETACH won't respect `sig' argument, so we post it here. */ 92676baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman if (sig && kill(tcp->pid, sig) < 0) 92776baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman perror("detach: kill"); 92876baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman sig = 0; 92976baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman if ((error = ptrace(PTRACE_DETACH, tcp->pid, (char *) 1, sig)) < 0) 93076baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman perror("detach: ptrace(PTRACE_DETACH, ...)"); 93176baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman#endif /* SUNOS4 */ 93276baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman 93376baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman#ifndef SVR4 93476baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman if (waiting_parent(tcp)) 93576baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman error = resume(tcp->parent); 93676baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman#endif /* !SVR4 */ 93776baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman 93876baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman if (!qflag) 93976baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman fprintf(stderr, "Process %u detached\n", tcp->pid); 94076baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman 94176baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman droptcb(tcp); 94276baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman return error; 94376baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman} 94476baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman 94576baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman#ifdef SVR4 94676baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman 94776baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkermanstatic void 94876baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkermanreaper(sig) 94976baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkermanint sig; 95076baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman{ 95176baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman int pid; 95276baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman int status; 95376baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman 95476baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman while ((pid = waitpid(-1, &status, WNOHANG)) > 0) { 95576baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman#if 0 95676baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman struct tcb *tcp; 95776baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman 95876baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman tcp = pid2tcb(pid); 95976baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman if (tcp) 96076baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman droptcb(tcp); 96176baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman#endif 96276baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman } 96376baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman} 96476baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman 96576baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman#endif /* SVR4 */ 96676baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman 96776baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkermanstatic void 96876baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkermancleanup() 96976baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman{ 97076baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman int i; 97176baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman struct tcb *tcp; 97276baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman 97376baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman for (i = 0, tcp = tcbtab; i < MAX_PROCS; i++, tcp++) { 97476baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman if (!(tcp->flags & TCB_INUSE)) 97576baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman continue; 97676baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman if (debug) 97776baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman fprintf(stderr, 97876baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman "cleanup: looking at pid %u\n", tcp->pid); 97976baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman if (tcp_last && 98076baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman (!outfname || followfork < 2 || tcp_last == tcp)) { 98176baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman tprintf(" <unfinished ...>\n"); 98276baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman tcp_last = NULL; 98376baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman } 98476baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman if (tcp->flags & TCB_ATTACHED) 98576baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman detach(tcp, 0); 98676baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman else { 98776baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman kill(tcp->pid, SIGCONT); 98876baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman kill(tcp->pid, SIGTERM); 98976baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman } 99076baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman } 99176baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman if (cflag) 99276baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman call_summary(outf); 99376baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman} 99476baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman 99576baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkermanstatic void 99676baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkermaninterrupt(sig) 99776baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkermanint sig; 99876baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman{ 99976baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman interrupted = 1; 100076baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman} 100176baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman 100276baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman#ifndef HAVE_STRERROR 100376baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman 100476baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman#ifndef SYS_ERRLIST_DECLARED 100576baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkermanextern int sys_nerr; 100676baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkermanextern char *sys_errlist[]; 100776baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman#endif /* SYS_ERRLIST_DECLARED */ 100876baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman 100976baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkermanconst char * 101076baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkermanstrerror(errno) 101176baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkermanint errno; 101276baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman{ 101376baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman static char buf[64]; 101476baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman 101576baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman if (errno < 1 || errno >= sys_nerr) { 101676baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman sprintf(buf, "Unknown error %d", errno); 101776baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman return buf; 101876baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman } 101976baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman return sys_errlist[errno]; 102076baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman} 102176baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman 102276baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman#endif /* HAVE_STERRROR */ 102376baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman 102476baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman#ifndef HAVE_STRSIGNAL 102576baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman 102676baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman#ifndef SYS_SIGLIST_DECLARED 102776baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman#ifdef HAVE__SYS_SIGLIST 102876baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman extern char *_sys_siglist[]; 102976baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman#else 103076baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman extern char *sys_siglist[]; 103176baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman#endif 103276baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman#endif /* SYS_SIGLIST_DECLARED */ 103376baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman 103476baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkermanconst char * 103576baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkermanstrsignal(sig) 103676baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkermanint sig; 103776baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman{ 103876baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman static char buf[64]; 103976baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman 104076baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman if (sig < 1 || sig >= NSIG) { 104176baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman sprintf(buf, "Unknown signal %d", sig); 104276baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman return buf; 104376baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman } 104476baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman#ifdef HAVE__SYS_SIGLIST 104576baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman return _sys_siglist[sig]; 104676baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman#else 104776baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman return sys_siglist[sig]; 104876baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman#endif 104976baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman} 105076baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman 105176baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman#endif /* HAVE_STRSIGNAL */ 105276baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman 105376baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman#ifdef SVR4 105476baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman 105576baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkermanstatic void 105676baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkermanrebuild_pollv() 105776baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman{ 105876baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman int i, j; 105976baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman struct tcb *tcp; 106076baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman 106176baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman for (i = j = 0, tcp = tcbtab; i < MAX_PROCS; i++, tcp++) { 106276baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman if (!(tcp->flags & TCB_INUSE)) 106376baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman continue; 106476baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman pollv[j].fd = tcp->pfd; 10659ce1a63eb20b069607c06f9645ac5a17b418a5f3Wichert Akkerman pollv[j].events = POLLWANT; 106676baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman j++; 106776baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman } 106876baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman if (j != nprocs) { 106976baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman fprintf(stderr, "strace: proc miscount\n"); 107076baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman exit(1); 107176baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman } 107276baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman} 107376baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman 107476baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman#ifndef HAVE_POLLABLE_PROCFS 107576baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman 107676baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkermanstatic void 107776baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkermanproc_poll_open() 107876baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman{ 107976baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman int arg; 108076baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman int i; 108176baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman 108276baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman if (pipe(proc_poll_pipe) < 0) { 108376baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman perror("pipe"); 108476baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman exit(1); 108576baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman } 108676baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman for (i = 0; i < 2; i++) { 108776baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman if ((arg = fcntl(proc_poll_pipe[i], F_GETFD)) < 0) { 108876baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman perror("F_GETFD"); 108976baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman exit(1); 109076baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman } 109176baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman if (fcntl(proc_poll_pipe[i], F_SETFD, arg|FD_CLOEXEC) < 0) { 109276baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman perror("F_SETFD"); 109376baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman exit(1); 109476baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman } 109576baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman } 109676baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman} 109776baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman 109876baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkermanstatic int 109976baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkermanproc_poll(pollv, nfds, timeout) 110076baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkermanstruct pollfd *pollv; 110176baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkermanint nfds; 110276baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkermanint timeout; 110376baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman{ 110476baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman int i; 110576baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman int n; 110676baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman struct proc_pollfd pollinfo; 110776baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman 110876baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman if ((n = read(proc_poll_pipe[0], &pollinfo, sizeof(pollinfo))) < 0) 110976baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman return n; 111076baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman if (n != sizeof(struct proc_pollfd)) { 111176baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman fprintf(stderr, "panic: short read: %d\n", n); 111276baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman exit(1); 111376baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman } 111476baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman for (i = 0; i < nprocs; i++) { 111576baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman if (pollv[i].fd == pollinfo.fd) 111676baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman pollv[i].revents = pollinfo.revents; 111776baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman else 111876baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman pollv[i].revents = 0; 111976baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman } 112076baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman poller_pid = pollinfo.pid; 112176baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman return 1; 112276baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman} 112376baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman 112476baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkermanstatic void 112576baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkermanwakeup_handler(sig) 112676baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkermanint sig; 112776baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman{ 112876baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman} 112976baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman 113076baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkermanstatic void 113176baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkermanproc_poller(pfd) 113276baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkermanint pfd; 113376baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman{ 113476baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman struct proc_pollfd pollinfo; 113576baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman struct sigaction sa; 113676baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman sigset_t blocked_set, empty_set; 113776baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman int i; 113876baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman int n; 113976baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman struct rlimit rl; 114076baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman 114176baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman switch (fork()) { 114276baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman case -1: 114376baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman perror("fork"); 114476baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman _exit(0); 114576baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman case 0: 114676baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman break; 114776baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman default: 114876baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman return; 114976baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman } 115076baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman 115176baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman sa.sa_handler = interactive ? SIG_DFL : SIG_IGN; 115276baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman sa.sa_flags = 0; 115376baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman sigemptyset(&sa.sa_mask); 115476baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman sigaction(SIGHUP, &sa, NULL); 115576baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman sigaction(SIGINT, &sa, NULL); 115676baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman sigaction(SIGQUIT, &sa, NULL); 115776baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman sigaction(SIGPIPE, &sa, NULL); 115876baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman sigaction(SIGTERM, &sa, NULL); 115976baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman sa.sa_handler = wakeup_handler; 116076baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman sigaction(SIGUSR1, &sa, NULL); 116176baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman sigemptyset(&blocked_set); 116276baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman sigaddset(&blocked_set, SIGUSR1); 116376baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman sigprocmask(SIG_BLOCK, &blocked_set, NULL); 116476baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman sigemptyset(&empty_set); 116576baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman 116676baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman if (getrlimit(RLIMIT_NOFILE, &rl) < 0) { 116776baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman perror("getrlimit(RLIMIT_NOFILE, ...)"); 116876baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman _exit(0); 116976baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman } 117076baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman n = rl.rlim_cur; 117176baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman for (i = 0; i < n; i++) { 117276baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman if (i != pfd && i != proc_poll_pipe[1]) 117376baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman close(i); 117476baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman } 117576baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman 117676baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman pollinfo.fd = pfd; 117776baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman pollinfo.pid = getpid(); 117876baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman for (;;) { 11799ce1a63eb20b069607c06f9645ac5a17b418a5f3Wichert Akkerman if (ioctl(pfd, PIOCWSTOP, NULL) < 0) 11809ce1a63eb20b069607c06f9645ac5a17b418a5f3Wichert Akkerman { 118176baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman switch (errno) { 118276baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman case EINTR: 118376baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman continue; 118476baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman case EBADF: 118576baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman pollinfo.revents = POLLERR; 118676baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman break; 118776baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman case ENOENT: 118876baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman pollinfo.revents = POLLHUP; 118976baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman break; 119076baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman default: 119176baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman perror("proc_poller: PIOCWSTOP"); 119276baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman } 119376baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman write(proc_poll_pipe[1], &pollinfo, sizeof(pollinfo)); 119476baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman _exit(0); 119576baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman } 11969ce1a63eb20b069607c06f9645ac5a17b418a5f3Wichert Akkerman pollinfo.revents = POLLWANT; 119776baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman write(proc_poll_pipe[1], &pollinfo, sizeof(pollinfo)); 119876baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman sigsuspend(&empty_set); 119976baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman } 120076baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman} 120176baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman 120276baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman#endif /* !HAVE_POLLABLE_PROCFS */ 120376baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman 120476baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkermanstatic int 120576baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkermanchoose_pfd() 120676baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman{ 120776baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman int i, j; 120876baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman struct tcb *tcp; 120976baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman 121076baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman static int last; 121176baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman 121276baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman if (followfork < 2 && 12139ce1a63eb20b069607c06f9645ac5a17b418a5f3Wichert Akkerman last < nprocs && (pollv[last].revents & POLLWANT)) { 121476baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman /* 121576baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman * The previous process is ready to run again. We'll 121676baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman * let it do so if it is currently in a syscall. This 121776baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman * heuristic improves the readability of the trace. 121876baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman */ 121976baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman tcp = pfd2tcb(pollv[last].fd); 122076baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman if (tcp && (tcp->flags & TCB_INSYSCALL)) 122176baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman return pollv[last].fd; 122276baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman } 122376baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman 122476baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman for (i = 0; i < nprocs; i++) { 122576baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman /* Let competing children run round robin. */ 122676baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman j = (i + last + 1) % nprocs; 122776baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman if (pollv[j].revents & (POLLHUP | POLLERR)) { 122876baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman tcp = pfd2tcb(pollv[j].fd); 122976baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman if (!tcp) { 123076baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman fprintf(stderr, "strace: lost proc\n"); 123176baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman exit(1); 123276baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman } 123376baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman droptcb(tcp); 123476baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman return -1; 123576baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman } 12369ce1a63eb20b069607c06f9645ac5a17b418a5f3Wichert Akkerman if (pollv[j].revents & POLLWANT) { 123776baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman last = j; 123876baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman return pollv[j].fd; 123976baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman } 124076baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman } 124176baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman fprintf(stderr, "strace: nothing ready\n"); 124276baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman exit(1); 124376baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman} 124476baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman 124576baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkermanstatic int 124676baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkermantrace() 124776baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman{ 12489dbf15466e9c178ac4090eba2c1232e2fe0706f9Wichert Akkerman#ifdef POLL_HACK 12499dbf15466e9c178ac4090eba2c1232e2fe0706f9Wichert Akkerman struct tcb *in_syscall; 12509dbf15466e9c178ac4090eba2c1232e2fe0706f9Wichert Akkerman#endif 125176baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman struct tcb *tcp; 125276baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman int pfd; 125376baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman int what; 125476baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman int ioctl_result = 0, ioctl_errno = 0; 12559ce1a63eb20b069607c06f9645ac5a17b418a5f3Wichert Akkerman long arg; 125676baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman 125776baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman for (;;) { 125876baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman if (interactive) 125976baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman sigprocmask(SIG_SETMASK, &empty_set, NULL); 126076baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman 126176baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman if (nprocs == 0) 126276baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman break; 126376baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman 126476baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman switch (nprocs) { 126576baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman case 1: 126676baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman#ifndef HAVE_POLLABLE_PROCFS 126776baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman if (proc_poll_pipe[0] == -1) { 126876baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman#endif 126976baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman tcp = pid2tcb(0); 127076baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman if (!tcp) 127176baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman continue; 127276baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman pfd = tcp->pfd; 127376baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman if (pfd == -1) 127476baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman continue; 127576baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman break; 127676baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman#ifndef HAVE_POLLABLE_PROCFS 127776baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman } 127876baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman /* fall through ... */ 127976baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman#endif /* !HAVE_POLLABLE_PROCFS */ 128076baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman default: 128176baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman#ifdef HAVE_POLLABLE_PROCFS 12829dbf15466e9c178ac4090eba2c1232e2fe0706f9Wichert Akkerman#ifdef POLL_HACK 12839dbf15466e9c178ac4090eba2c1232e2fe0706f9Wichert Akkerman /* On some systems (e.g. UnixWare) we get too much ugly 12849dbf15466e9c178ac4090eba2c1232e2fe0706f9Wichert Akkerman "unfinished..." stuff when multiple proceses are in 12859dbf15466e9c178ac4090eba2c1232e2fe0706f9Wichert Akkerman syscalls. Here's a nasty hack */ 12869dbf15466e9c178ac4090eba2c1232e2fe0706f9Wichert Akkerman 12879dbf15466e9c178ac4090eba2c1232e2fe0706f9Wichert Akkerman if (in_syscall) { 12889dbf15466e9c178ac4090eba2c1232e2fe0706f9Wichert Akkerman struct pollfd pv; 12899dbf15466e9c178ac4090eba2c1232e2fe0706f9Wichert Akkerman tcp = in_syscall; 12909dbf15466e9c178ac4090eba2c1232e2fe0706f9Wichert Akkerman in_syscall = NULL; 12919dbf15466e9c178ac4090eba2c1232e2fe0706f9Wichert Akkerman pv.fd = tcp->pfd; 12929dbf15466e9c178ac4090eba2c1232e2fe0706f9Wichert Akkerman pv.events = POLLWANT; 12939dbf15466e9c178ac4090eba2c1232e2fe0706f9Wichert Akkerman if ((what = poll (&pv, 1, 1)) < 0) { 12949dbf15466e9c178ac4090eba2c1232e2fe0706f9Wichert Akkerman if (interrupted) 12959dbf15466e9c178ac4090eba2c1232e2fe0706f9Wichert Akkerman return 0; 12969dbf15466e9c178ac4090eba2c1232e2fe0706f9Wichert Akkerman continue; 12979dbf15466e9c178ac4090eba2c1232e2fe0706f9Wichert Akkerman } 12989dbf15466e9c178ac4090eba2c1232e2fe0706f9Wichert Akkerman else if (what == 1 && pv.revents & POLLWANT) { 12999dbf15466e9c178ac4090eba2c1232e2fe0706f9Wichert Akkerman goto FOUND; 13009dbf15466e9c178ac4090eba2c1232e2fe0706f9Wichert Akkerman } 13019dbf15466e9c178ac4090eba2c1232e2fe0706f9Wichert Akkerman } 13029dbf15466e9c178ac4090eba2c1232e2fe0706f9Wichert Akkerman#endif 13039dbf15466e9c178ac4090eba2c1232e2fe0706f9Wichert Akkerman 130476baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman if (poll(pollv, nprocs, INFTIM) < 0) { 130576baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman if (interrupted) 130676baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman return 0; 130776baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman continue; 130876baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman } 130976baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman#else /* !HAVE_POLLABLE_PROCFS */ 131076baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman if (proc_poll(pollv, nprocs, INFTIM) < 0) { 131176baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman if (interrupted) 131276baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman return 0; 131376baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman continue; 131476baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman } 131576baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman#endif /* !HAVE_POLLABLE_PROCFS */ 131676baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman pfd = choose_pfd(); 131776baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman if (pfd == -1) 131876baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman continue; 131976baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman break; 132076baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman } 132176baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman 132276baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman /* Look up `pfd' in our table. */ 132376baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman if ((tcp = pfd2tcb(pfd)) == NULL) { 132476baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman fprintf(stderr, "unknown pfd: %u\n", pfd); 132576baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman exit(1); 132676baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman } 13279dbf15466e9c178ac4090eba2c1232e2fe0706f9Wichert Akkerman FOUND: 132876baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman /* Get the status of the process. */ 132976baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman if (!interrupted) { 13309ce1a63eb20b069607c06f9645ac5a17b418a5f3Wichert Akkerman ioctl_result = IOCTL_WSTOP (tcp); 133176baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman ioctl_errno = errno; 133276baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman#ifndef HAVE_POLLABLE_PROCFS 133376baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman if (proc_poll_pipe[0] != -1) { 133476baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman if (ioctl_result < 0) 133576baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman kill(poller_pid, SIGKILL); 133676baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman else 133776baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman kill(poller_pid, SIGUSR1); 133876baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman } 133976baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman#endif /* !HAVE_POLLABLE_PROCFS */ 134076baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman } 134176baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman if (interrupted) 134276baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman return 0; 134376baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman 134476baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman if (interactive) 134576baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman sigprocmask(SIG_BLOCK, &blocked_set, NULL); 134676baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman 134776baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman if (ioctl_result < 0) { 134876baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman /* Find out what happened if it failed. */ 134976baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman switch (ioctl_errno) { 135076baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman case EINTR: 135176baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman case EBADF: 135276baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman continue; 135376baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman case ENOENT: 135476baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman droptcb(tcp); 135576baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman continue; 135676baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman default: 135776baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman perror("PIOCWSTOP"); 135876baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman exit(1); 135976baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman } 136076baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman } 136176baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman 136276baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman /* clear the just started flag */ 136376baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman tcp->flags &= ~TCB_STARTUP; 136476baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman 136576baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman /* set current output file */ 136676baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman outf = tcp->outf; 136776baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman 136876baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman if (cflag) { 136976baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman struct timeval stime; 137076baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman 137176baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman stime.tv_sec = tcp->status.pr_stime.tv_sec; 137276baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman stime.tv_usec = tcp->status.pr_stime.tv_nsec/1000; 137376baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman tv_sub(&tcp->dtime, &stime, &tcp->stime); 137476baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman tcp->stime = stime; 137576baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman } 137676baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman 13779ce1a63eb20b069607c06f9645ac5a17b418a5f3Wichert Akkerman what = tcp->status.PR_WHAT; 13789ce1a63eb20b069607c06f9645ac5a17b418a5f3Wichert Akkerman switch (tcp->status.PR_WHY) { 137976baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman case PR_REQUESTED: 13809ce1a63eb20b069607c06f9645ac5a17b418a5f3Wichert Akkerman if (tcp->status.PR_FLAGS & PR_ASLEEP) { 13819ce1a63eb20b069607c06f9645ac5a17b418a5f3Wichert Akkerman tcp->status.PR_WHY = PR_SYSENTRY; 138276baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman if (trace_syscall(tcp) < 0) { 138376baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman fprintf(stderr, "syscall trouble\n"); 138476baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman exit(1); 138576baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman } 138676baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman } 138776baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman break; 138876baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman case PR_SYSENTRY: 13899dbf15466e9c178ac4090eba2c1232e2fe0706f9Wichert Akkerman#ifdef POLL_HACK 13909dbf15466e9c178ac4090eba2c1232e2fe0706f9Wichert Akkerman in_syscall = tcp; 13919dbf15466e9c178ac4090eba2c1232e2fe0706f9Wichert Akkerman#endif 139276baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman case PR_SYSEXIT: 139376baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman if (trace_syscall(tcp) < 0) { 139476baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman fprintf(stderr, "syscall trouble\n"); 139576baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman exit(1); 139676baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman } 139776baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman break; 139876baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman case PR_SIGNALLED: 139976baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman if (!cflag && (qual_flags[what] & QUAL_SIGNAL)) { 140076baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman printleader(tcp); 140176baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman tprintf("--- %s (%s) ---", 1402ce780fc9e6067b15b65ca2904c698c77503bf635Nate Sammons signame(what), strsignal(what)); 140376baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman printtrailer(tcp); 140476baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman } 140576baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman break; 140676baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman case PR_FAULTED: 140776baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman if (!cflag && (qual_flags[what] & QUAL_FAULT)) { 140876baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman printleader(tcp); 140976baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman tprintf("=== FAULT %d ===", what); 141076baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman printtrailer(tcp); 141176baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman } 141276baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman break; 141376baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman default: 14149ce1a63eb20b069607c06f9645ac5a17b418a5f3Wichert Akkerman fprintf(stderr, "odd stop %d\n", tcp->status.PR_WHY); 141576baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman exit(1); 141676baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman break; 141776baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman } 14189ce1a63eb20b069607c06f9645ac5a17b418a5f3Wichert Akkerman arg = 0; 14199ce1a63eb20b069607c06f9645ac5a17b418a5f3Wichert Akkerman if (IOCTL (tcp->pfd, PIOCRUN, &arg) < 0) { 142076baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman perror("PIOCRUN"); 142176baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman exit(1); 142276baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman } 142376baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman } 142476baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman return 0; 142576baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman} 142676baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman 142776baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman#else /* !SVR4 */ 142876baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman 142976baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkermanstatic int 143076baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkermantrace() 143176baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman{ 143276baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman int pid; 143376baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman int wait_errno; 143476baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman int status; 143576baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman struct tcb *tcp; 143676baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman#ifdef LINUX 143776baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman struct rusage ru; 143876baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman#endif /* LINUX */ 143976baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman 144076baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman while (nprocs != 0) { 144176baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman if (interactive) 144276baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman sigprocmask(SIG_SETMASK, &empty_set, NULL); 144376baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman#ifdef LINUX 144476baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman pid = wait4(-1, &status, 0, cflag ? &ru : NULL); 144576baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman#endif /* LINUX */ 144676baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman#ifdef SUNOS4 144776baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman pid = wait(&status); 144876baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman#endif /* SUNOS4 */ 144976baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman wait_errno = errno; 145076baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman if (interactive) 145176baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman sigprocmask(SIG_BLOCK, &blocked_set, NULL); 145276baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman 145376baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman if (interrupted) 145476baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman return 0; 145576baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman 145676baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman if (pid == -1) { 145776baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman switch (wait_errno) { 145876baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman case EINTR: 145976baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman continue; 146076baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman case ECHILD: 146176baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman /* 146276baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman * We would like to verify this case 146376baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman * but sometimes a race in Solbourne's 146476baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman * version of SunOS sometimes reports 146576baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman * ECHILD before sending us SIGCHILD. 146676baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman */ 146776baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman#if 0 146876baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman if (nprocs == 0) 146976baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman return 0; 147076baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman fprintf(stderr, "strace: proc miscount\n"); 147176baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman exit(1); 147276baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman#endif 147376baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman return 0; 147476baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman default: 147576baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman errno = wait_errno; 147676baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman perror("strace: wait"); 147776baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman return -1; 147876baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman } 147976baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman } 148076baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman if (debug) 148176baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman fprintf(stderr, " [wait(%#x) = %u]\n", status, pid); 148276baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman 148376baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman /* Look up `pid' in our table. */ 148476baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman if ((tcp = pid2tcb(pid)) == NULL) { 14858b1b40cd8b49151374d0ac2a5b1a4b459f9e0ae5Wichert Akkerman#if 1 /* XXX davidm */ 14868b1b40cd8b49151374d0ac2a5b1a4b459f9e0ae5Wichert Akkerman struct tcb *tcpchild; 14878b1b40cd8b49151374d0ac2a5b1a4b459f9e0ae5Wichert Akkerman 14888b1b40cd8b49151374d0ac2a5b1a4b459f9e0ae5Wichert Akkerman if ((tcpchild = alloctcb(pid)) == NULL) { 14898b1b40cd8b49151374d0ac2a5b1a4b459f9e0ae5Wichert Akkerman fprintf(stderr, " [tcb table full]\n"); 14908b1b40cd8b49151374d0ac2a5b1a4b459f9e0ae5Wichert Akkerman kill(pid, SIGKILL); /* XXX */ 14918b1b40cd8b49151374d0ac2a5b1a4b459f9e0ae5Wichert Akkerman return 0; 14928b1b40cd8b49151374d0ac2a5b1a4b459f9e0ae5Wichert Akkerman } 14938b1b40cd8b49151374d0ac2a5b1a4b459f9e0ae5Wichert Akkerman tcpchild->flags |= TCB_ATTACHED; 14948b1b40cd8b49151374d0ac2a5b1a4b459f9e0ae5Wichert Akkerman newoutf(tcpchild); 14958b1b40cd8b49151374d0ac2a5b1a4b459f9e0ae5Wichert Akkerman tcp->nchildren++; 14968b1b40cd8b49151374d0ac2a5b1a4b459f9e0ae5Wichert Akkerman if (!qflag) 14978b1b40cd8b49151374d0ac2a5b1a4b459f9e0ae5Wichert Akkerman fprintf(stderr, "Process %d attached\n", pid); 14988b1b40cd8b49151374d0ac2a5b1a4b459f9e0ae5Wichert Akkerman#else 149976baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman fprintf(stderr, "unknown pid: %u\n", pid); 150076baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman if (WIFSTOPPED(status)) 150176baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman ptrace(PTRACE_CONT, pid, (char *) 1, 0); 150276baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman exit(1); 15038b1b40cd8b49151374d0ac2a5b1a4b459f9e0ae5Wichert Akkerman#endif 150476baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman } 150576baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman /* set current output file */ 150676baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman outf = tcp->outf; 150776baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman if (cflag) { 150876baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman#ifdef LINUX 150976baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman tv_sub(&tcp->dtime, &ru.ru_stime, &tcp->stime); 151076baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman tcp->stime = ru.ru_stime; 151176baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman#endif /* !LINUX */ 151276baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman } 151376baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman 151476baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman if (tcp->flags & TCB_SUSPENDED) { 151576baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman /* 151676baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman * Apparently, doing any ptrace() call on a stopped 151776baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman * process, provokes the kernel to report the process 151876baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman * status again on a subsequent wait(), even if the 151976baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman * process has not been actually restarted. 152076baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman * Since we have inspected the arguments of suspended 152176baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman * processes we end up here testing for this case. 152276baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman */ 152376baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman continue; 152476baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman } 152576baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman if (WIFSIGNALED(status)) { 152676baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman if (!cflag 152776baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman && (qual_flags[WTERMSIG(status)] & QUAL_SIGNAL)) { 152876baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman printleader(tcp); 152976baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman tprintf("+++ killed by %s +++", 1530ce780fc9e6067b15b65ca2904c698c77503bf635Nate Sammons signame(WTERMSIG(status))); 153176baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman printtrailer(tcp); 153276baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman } 153376baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman droptcb(tcp); 153476baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman continue; 153576baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman } 153676baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman if (WIFEXITED(status)) { 153776baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman if (debug) 153876baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman fprintf(stderr, "pid %u exited\n", pid); 153976baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman if (tcp->flags & TCB_ATTACHED) 154076baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman fprintf(stderr, 154176baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman "PANIC: attached pid %u exited\n", 154276baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman pid); 154376baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman droptcb(tcp); 154476baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman continue; 154576baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman } 154676baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman if (!WIFSTOPPED(status)) { 154776baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman fprintf(stderr, "PANIC: pid %u not stopped\n", pid); 154876baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman droptcb(tcp); 154976baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman continue; 155076baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman } 155176baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman if (debug) 155276baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman fprintf(stderr, "pid %u stopped, [%s]\n", 1553ce780fc9e6067b15b65ca2904c698c77503bf635Nate Sammons pid, signame(WSTOPSIG(status))); 155476baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman 155576baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman if (tcp->flags & TCB_STARTUP) { 155676baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman /* 155776baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman * This flag is there to keep us in sync. 155876baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman * Next time this process stops it should 155976baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman * really be entering a system call. 156076baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman */ 156176baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman tcp->flags &= ~TCB_STARTUP; 156276baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman if (tcp->flags & TCB_ATTACHED) { 156376baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman /* 156476baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman * Interestingly, the process may stop 156576baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman * with STOPSIG equal to some other signal 156676baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman * than SIGSTOP if we happend to attach 156776baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman * just before the process takes a signal. 156876baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman */ 156976baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman if (!WIFSTOPPED(status)) { 157076baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman fprintf(stderr, 157176baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman "pid %u not stopped\n", pid); 157276baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman detach(tcp, WSTOPSIG(status)); 157376baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman continue; 157476baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman } 157576baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman } 157676baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman else { 157776baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman#ifdef SUNOS4 157876baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman /* A child of us stopped at exec */ 157976baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman if (WSTOPSIG(status) == SIGTRAP && followvfork) 158076baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman fixvfork(tcp); 158176baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman#endif /* SUNOS4 */ 158276baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman } 158376baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman if (tcp->flags & TCB_BPTSET) { 158476baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman if (clearbpt(tcp) < 0) /* Pretty fatal */ { 158576baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman droptcb(tcp); 158676baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman cleanup(); 158776baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman return -1; 158876baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman } 158976baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman } 159076baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman goto tracing; 159176baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman } 159276baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman 159376baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman if (WSTOPSIG(status) != SIGTRAP) { 159476baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman if (WSTOPSIG(status) == SIGSTOP && 159576baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman (tcp->flags & TCB_SIGTRAPPED)) { 159676baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman /* 159776baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman * Trapped attempt to block SIGTRAP 159876baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman * Hope we are back in control now. 159976baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman */ 160076baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman tcp->flags &= ~(TCB_INSYSCALL | TCB_SIGTRAPPED); 160176baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman if (ptrace(PTRACE_SYSCALL, 160276baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman pid, (char *) 1, 0) < 0) { 160376baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman perror("trace: ptrace(PTRACE_SYSCALL, ...)"); 160476baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman cleanup(); 160576baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman return -1; 160676baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman } 160776baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman continue; 160876baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman } 160976baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman if (!cflag 161076baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman && (qual_flags[WSTOPSIG(status)] & QUAL_SIGNAL)) { 161176baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman printleader(tcp); 161276baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman tprintf("--- %s (%s) ---", 1613ce780fc9e6067b15b65ca2904c698c77503bf635Nate Sammons signame(WSTOPSIG(status)), 161476baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman strsignal(WSTOPSIG(status))); 161576baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman printtrailer(tcp); 161676baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman } 161776baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman if ((tcp->flags & TCB_ATTACHED) && 161876baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman !sigishandled(tcp, WSTOPSIG(status))) { 161976baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman detach(tcp, WSTOPSIG(status)); 162076baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman continue; 162176baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman } 162276baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman if (ptrace(PTRACE_SYSCALL, pid, (char *) 1, 162376baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman WSTOPSIG(status)) < 0) { 162476baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman perror("trace: ptrace(PTRACE_SYSCALL, ...)"); 162576baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman cleanup(); 162676baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman return -1; 162776baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman } 162876baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman tcp->flags &= ~TCB_SUSPENDED; 162976baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman continue; 163076baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman } 163176baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman if (trace_syscall(tcp) < 0) { 163276baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman if (tcp->flags & TCB_ATTACHED) 163376baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman detach(tcp, 0); 163476baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman else { 163576baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman ptrace(PTRACE_KILL, 163676baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman tcp->pid, (char *) 1, SIGTERM); 163776baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman droptcb(tcp); 163876baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman } 163976baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman continue; 164076baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman } 164176baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman if (tcp->flags & TCB_EXITING) { 164276baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman if (tcp->flags & TCB_ATTACHED) 164376baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman detach(tcp, 0); 164476baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman else if (ptrace(PTRACE_CONT, pid, (char *) 1, 0) < 0) { 164576baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman perror("strace: ptrace(PTRACE_CONT, ...)"); 164676baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman cleanup(); 164776baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman return -1; 164876baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman } 164976baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman continue; 165076baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman } 165176baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman if (tcp->flags & TCB_SUSPENDED) { 165276baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman if (!qflag) 165376baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman fprintf(stderr, "Process %u suspended\n", pid); 165476baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman continue; 165576baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman } 165676baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman tracing: 165776baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman if (ptrace(PTRACE_SYSCALL, pid, (char *) 1, 0) < 0) { 165876baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman perror("trace: ptrace(PTRACE_SYSCALL, ...)"); 165976baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman cleanup(); 166076baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman return -1; 166176baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman } 166276baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman } 166376baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman return 0; 166476baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman} 166576baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman 166676baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman#endif /* !SVR4 */ 166776baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman 166876baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkermanstatic int curcol; 166976baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman 167076baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman#ifdef __STDC__ 167176baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman#include <stdarg.h> 167276baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman#define VA_START(a, b) va_start(a, b) 167376baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman#else 167476baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman#include <varargs.h> 167576baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman#define VA_START(a, b) va_start(a) 167676baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman#endif 167776baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman 167876baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkermanvoid 167976baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman#ifdef __STDC__ 168076baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkermantprintf(const char *fmt, ...) 168176baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman#else 168276baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkermantprintf(fmt, va_alist) 168376baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkermanchar *fmt; 168476baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkermanva_dcl 168576baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman#endif 168676baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman{ 168776baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman va_list args; 168876baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman 168976baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman VA_START(args, fmt); 169076baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman if (outf) 169176baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman curcol += vfprintf(outf, fmt, args); 169276baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman va_end(args); 169376baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman return; 169476baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman} 169576baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman 169676baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkermanvoid 169776baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkermanprintleader(tcp) 169876baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkermanstruct tcb *tcp; 169976baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman{ 170076baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman if (tcp_last && (!outfname || followfork < 2 || tcp_last == tcp)) { 170176baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman tcp_last->flags |= TCB_REPRINT; 170276baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman tprintf(" <unfinished ...>\n"); 170376baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman } 170476baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman curcol = 0; 170576baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman if ((followfork == 1 || pflag_seen > 1) && outfname) 170676baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman tprintf("%-5d ", tcp->pid); 170776baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman else if (nprocs > 1 && !outfname) 170876baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman tprintf("[pid %5u] ", tcp->pid); 170976baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman if (tflag) { 171076baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman char str[sizeof("HH:MM:SS")]; 171176baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman struct timeval tv, dtv; 171276baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman static struct timeval otv; 171376baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman 171476baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman gettimeofday(&tv, NULL); 171576baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman if (rflag) { 171676baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman if (otv.tv_sec == 0) 171776baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman otv = tv; 171876baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman tv_sub(&dtv, &tv, &otv); 171976baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman tprintf("%6ld.%06ld ", 172076baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman (long) dtv.tv_sec, (long) dtv.tv_usec); 172176baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman otv = tv; 172276baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman } 172376baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman else if (tflag > 2) { 172476baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman tprintf("%ld.%06ld ", 172576baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman (long) tv.tv_sec, (long) tv.tv_usec); 172676baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman } 172776baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman else { 172876baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman time_t local = tv.tv_sec; 172976baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman strftime(str, sizeof(str), "%T", localtime(&local)); 173076baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman if (tflag > 1) 173176baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman tprintf("%s.%06ld ", str, (long) tv.tv_usec); 173276baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman else 173376baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman tprintf("%s ", str); 173476baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman } 173576baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman } 173676baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman if (iflag) 173776baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman printcall(tcp); 173876baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman} 173976baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman 174076baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkermanvoid 174176baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkermantabto(col) 174276baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkermanint col; 174376baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman{ 174476baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman if (curcol < col) 174576baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman tprintf("%*s", col - curcol, ""); 174676baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman} 174776baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman 174876baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkermanvoid 174976baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkermanprinttrailer(tcp) 175076baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkermanstruct tcb *tcp; 175176baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman{ 175276baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman tprintf("\n"); 175376baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman tcp_last = NULL; 175476baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman} 17559ce1a63eb20b069607c06f9645ac5a17b418a5f3Wichert Akkerman 1756ea78f0f77185f7d6d0b2055805139d96e1be816cWichert Akkerman#ifdef HAVE_MP_PROCFS 17579ce1a63eb20b069607c06f9645ac5a17b418a5f3Wichert Akkerman 17589ce1a63eb20b069607c06f9645ac5a17b418a5f3Wichert Akkermanint mp_ioctl (int fd, int cmd, void *arg, int size) { 17599ce1a63eb20b069607c06f9645ac5a17b418a5f3Wichert Akkerman 17609ce1a63eb20b069607c06f9645ac5a17b418a5f3Wichert Akkerman struct iovec iov[2]; 17619ce1a63eb20b069607c06f9645ac5a17b418a5f3Wichert Akkerman int n = 1; 17629ce1a63eb20b069607c06f9645ac5a17b418a5f3Wichert Akkerman 17639ce1a63eb20b069607c06f9645ac5a17b418a5f3Wichert Akkerman iov[0].iov_base = &cmd; 17649ce1a63eb20b069607c06f9645ac5a17b418a5f3Wichert Akkerman iov[0].iov_len = sizeof cmd; 17659ce1a63eb20b069607c06f9645ac5a17b418a5f3Wichert Akkerman if (arg) { 17669ce1a63eb20b069607c06f9645ac5a17b418a5f3Wichert Akkerman ++n; 17679ce1a63eb20b069607c06f9645ac5a17b418a5f3Wichert Akkerman iov[1].iov_base = arg; 17689ce1a63eb20b069607c06f9645ac5a17b418a5f3Wichert Akkerman iov[1].iov_len = size; 17699ce1a63eb20b069607c06f9645ac5a17b418a5f3Wichert Akkerman } 17709ce1a63eb20b069607c06f9645ac5a17b418a5f3Wichert Akkerman 17719ce1a63eb20b069607c06f9645ac5a17b418a5f3Wichert Akkerman return writev (fd, iov, n); 17729ce1a63eb20b069607c06f9645ac5a17b418a5f3Wichert Akkerman} 17739ce1a63eb20b069607c06f9645ac5a17b418a5f3Wichert Akkerman 17749ce1a63eb20b069607c06f9645ac5a17b418a5f3Wichert Akkerman#endif 1775