strace.c revision 4dc8a2aec63e4fb5ee2688544c4de323ed5de3ef
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 3376baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman#include "defs.h" 3476baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman 3576baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman#include <signal.h> 3676baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman#include <errno.h> 3776baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman#include <sys/param.h> 3876baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman#include <fcntl.h> 3976baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman#include <sys/resource.h> 4076baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman#include <sys/wait.h> 4176baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman#include <sys/stat.h> 4276baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman#include <pwd.h> 4376baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman#include <grp.h> 4476baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman#include <string.h> 4576baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman 4676baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman#ifdef SVR4 4776baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman#include <sys/stropts.h> 4876baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman#include <poll.h> 49ea78f0f77185f7d6d0b2055805139d96e1be816cWichert Akkerman#ifdef HAVE_MP_PROCFS 509ce1a63eb20b069607c06f9645ac5a17b418a5f3Wichert Akkerman#include <sys/uio.h> 519ce1a63eb20b069607c06f9645ac5a17b418a5f3Wichert Akkerman#endif 5276baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman#endif 5376baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman 5476baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkermanint debug = 0, followfork = 0, followvfork = 0, interactive = 0; 5576baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkermanint rflag = 0, tflag = 0, dtime = 0, cflag = 0; 5676baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkermanint iflag = 0, xflag = 0, qflag = 0; 5776baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkermanint pflag_seen = 0; 5876baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman 5976baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkermanchar *username = NULL; 6076baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkermanuid_t run_uid; 6176baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkermangid_t run_gid; 6276baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman 6376baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkermanint acolumn = DEFAULT_ACOLUMN; 6476baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkermanint max_strlen = DEFAULT_STRLEN; 6576baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkermanchar *outfname = NULL; 6676baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert AkkermanFILE *outf; 6776baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkermanstruct tcb tcbtab[MAX_PROCS]; 6876baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkermanint nprocs; 6976baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkermanchar *progname; 7076baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkermanextern char version[]; 7176baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkermanextern char **environ; 7276baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman 7376baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkermanstatic struct tcb *pid2tcb P((int pid)); 7476baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkermanstatic int trace P((void)); 7576baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkermanstatic void cleanup P((void)); 7676baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkermanstatic void interrupt P((int sig)); 7776baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkermanstatic sigset_t empty_set, blocked_set; 7876baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman 7976baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman#ifdef HAVE_SIG_ATOMIC_T 8076baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkermanstatic volatile sig_atomic_t interrupted; 8176baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman#else /* !HAVE_SIG_ATOMIC_T */ 8276baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman#ifdef __STDC__ 8376baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkermanstatic volatile int interrupted; 8476baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman#else /* !__STDC__ */ 8576baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkermanstatic int interrupted; 8676baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman#endif /* !__STDC__ */ 8776baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman#endif /* !HAVE_SIG_ATOMIC_T */ 8876baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman 8976baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman#ifdef SVR4 9076baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman 9176baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkermanstatic struct tcb *pfd2tcb P((int pfd)); 9276baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkermanstatic void reaper P((int sig)); 9376baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkermanstatic void rebuild_pollv P((void)); 94e68d61c7d6dcf986d32c462e533ea46f85183db8Wichert Akkermanstruct pollfd pollv[MAX_PROCS]; 9576baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman 9676baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman#ifndef HAVE_POLLABLE_PROCFS 9776baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman 9876baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkermanstatic void proc_poll_open P((void)); 9976baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkermanstatic void proc_poller P((int pfd)); 10076baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman 10176baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkermanstruct proc_pollfd { 10276baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman int fd; 10376baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman int revents; 10476baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman int pid; 10576baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman}; 10676baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman 10776baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkermanstatic int poller_pid; 10876baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkermanstatic int proc_poll_pipe[2] = { -1, -1 }; 10976baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman 11076baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman#endif /* !HAVE_POLLABLE_PROCFS */ 11176baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman 112ea78f0f77185f7d6d0b2055805139d96e1be816cWichert Akkerman#ifdef HAVE_MP_PROCFS 1139ce1a63eb20b069607c06f9645ac5a17b418a5f3Wichert Akkerman#define POLLWANT POLLWRNORM 1149ce1a63eb20b069607c06f9645ac5a17b418a5f3Wichert Akkerman#else 1159ce1a63eb20b069607c06f9645ac5a17b418a5f3Wichert Akkerman#define POLLWANT POLLPRI 1169ce1a63eb20b069607c06f9645ac5a17b418a5f3Wichert Akkerman#endif 11776baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman#endif /* SVR4 */ 11876baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman 11976baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkermanstatic void 12076baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkermanusage(ofp, exitval) 12176baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert AkkermanFILE *ofp; 12276baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkermanint exitval; 12376baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman{ 12476baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman fprintf(ofp, "\ 12576baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkermanusage: strace [-dffhiqrtttTvVxx] [-a column] [-e expr] ... [-o file]\n\ 12676baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman [-p pid] ... [-s strsize] [-u username] [command [arg ...]]\n\ 12776baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman or: strace -c [-e expr] ... [-O overhead] [-S sortby] [command [arg ...]]\n\ 12876baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman-c -- count time, calls, and errors for each syscall and report summary\n\ 12976baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman-f -- follow forks, -ff -- with output into separate files\n\ 13076baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman-F -- attempt to follow vforks, -h -- print help message\n\ 13176baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman-i -- print instruction pointer at time of syscall\n\ 13276baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman-q -- suppress messages about attaching, detaching, etc.\n\ 13376baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman-r -- print relative timestamp, -t -- absolute timestamp, -tt -- with usecs\n\ 13476baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman-T -- print time spent in each syscall, -V -- print version\n\ 13576baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman-v -- verbose mode: print unabbreviated argv, stat, termio[s], etc. args\n\ 13676baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman-x -- print non-ascii strings in hex, -xx -- print all strings in hex\n\ 13776baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman-a column -- alignment COLUMN for printing syscall results (default %d)\n\ 13876baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman-e expr -- a qualifying expression: option=[!]all or option=[!]val1[,val2]...\n\ 13976baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman options: trace, abbrev, verbose, raw, signal, read, or write\n\ 14076baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman-o file -- send trace output to FILE instead of stderr\n\ 14176baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman-O overhead -- set overhead for tracing syscalls to OVERHEAD usecs\n\ 14276baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman-p pid -- trace process with process id PID, may be repeated\n\ 14376baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman-s strsize -- limit length of print strings to STRSIZE chars (default %d)\n\ 14476baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman-S sortby -- sort syscall counts by: time, calls, name, nothing (default %s)\n\ 14576baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman-u username -- run command as username handling setuid and/or setgid\n\ 14676baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman", DEFAULT_ACOLUMN, DEFAULT_STRLEN, DEFAULT_SORTBY); 14776baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman exit(exitval); 14876baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman} 14976baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman 15076baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman#ifdef SVR4 15176baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman#ifdef MIPS 15276baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkermanvoid 15376baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkermanfoobar() 15476baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman{ 15576baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman} 15676baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman#endif /* MIPS */ 15776baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman#endif /* SVR4 */ 15876baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman 15976baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkermanint 16076baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkermanmain(argc, argv) 16176baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkermanint argc; 16276baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkermanchar *argv[]; 16376baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman{ 16476baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman extern int optind; 16576baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman extern char *optarg; 16676baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman struct tcb *tcp; 16776baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman int c, pid = 0; 16876baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman struct sigaction sa; 16976baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman 17076baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman static char buf[BUFSIZ]; 17176baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman 17276baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman progname = argv[0]; 17376baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman outf = stderr; 17476baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman interactive = 1; 17576baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman qualify("trace=all"); 17676baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman qualify("abbrev=all"); 17776baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman qualify("verbose=all"); 17876baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman qualify("signal=all"); 17976baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman set_sortby(DEFAULT_SORTBY); 18076baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman set_personality(DEFAULT_PERSONALITY); 18176baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman while ((c = getopt(argc, argv, 18276baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman "+cdfFhiqrtTvVxa:e:o:O:p:s:S:u:")) != EOF) { 18376baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman switch (c) { 18476baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman case 'c': 18576baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman cflag++; 18676baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman dtime++; 18776baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman break; 18876baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman case 'd': 18976baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman debug++; 19076baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman break; 19176baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman case 'f': 19276baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman followfork++; 19376baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman break; 19476baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman case 'F': 19576baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman followvfork++; 19676baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman break; 19776baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman case 'h': 19876baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman usage(stdout, 0); 19976baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman break; 20076baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman case 'i': 20176baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman iflag++; 20276baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman break; 20376baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman case 'q': 20476baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman qflag++; 20576baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman break; 20676baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman case 'r': 20776baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman rflag++; 20876baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman tflag++; 20976baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman break; 21076baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman case 't': 21176baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman tflag++; 21276baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman break; 21376baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman case 'T': 21476baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman dtime++; 21576baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman break; 21676baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman case 'x': 21776baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman xflag++; 21876baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman break; 21976baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman case 'v': 22076baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman qualify("abbrev=none"); 22176baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman break; 22276baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman case 'V': 22376baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman printf("%s\n", version); 22476baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman exit(0); 22576baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman break; 22676baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman case 'a': 22776baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman acolumn = atoi(optarg); 22876baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman break; 22976baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman case 'e': 23076baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman qualify(optarg); 23176baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman break; 23276baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman case 'o': 23376baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman outfname = strdup(optarg); 23476baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman break; 23576baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman case 'O': 23676baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman set_overhead(atoi(optarg)); 23776baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman break; 23876baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman case 'p': 23976baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman if ((pid = atoi(optarg)) == 0) { 24076baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman fprintf(stderr, "%s: Invalid process id: %s\n", 24176baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman progname, optarg); 24276baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman break; 24376baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman } 24476baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman if (pid == getpid()) { 24554a4767f8609abfe2d7cb1802bc9e8dca97dd08fWichert Akkerman fprintf(stderr, "%s: I'm sorry, I can't let you do that, Dave.\n", progname); 24676baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman break; 24776baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman } 24876baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman if ((tcp = alloctcb(pid)) == NULL) { 24976baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman fprintf(stderr, "%s: tcb table full, please recompile strace\n", 25076baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman progname); 25176baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman exit(1); 25276baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman } 25376baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman tcp->flags |= TCB_ATTACHED; 25476baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman pflag_seen++; 25576baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman break; 25676baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman case 's': 25776baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman max_strlen = atoi(optarg); 25876baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman break; 25976baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman case 'S': 26076baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman set_sortby(optarg); 26176baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman break; 26276baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman case 'u': 26376baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman username = strdup(optarg); 26476baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman break; 26576baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman default: 26676baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman usage(stderr, 1); 26776baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman break; 26876baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman } 26976baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman } 27076baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman 27176baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman /* See if they want to run as another user. */ 27276baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman if (username != NULL) { 27376baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman struct passwd *pent; 27476baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman 27576baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman if (getuid() != 0 || geteuid() != 0) { 27676baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman fprintf(stderr, 27776baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman "%s: you must be root to use the -u option\n", 27876baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman progname); 27976baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman exit(1); 28076baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman } 28176baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman if ((pent = getpwnam(username)) == NULL) { 28276baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman fprintf(stderr, "%s: cannot find user `%s'\n", 28376baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman progname, optarg); 28476baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman exit(1); 28576baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman } 28676baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman run_uid = pent->pw_uid; 28776baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman run_gid = pent->pw_gid; 28876baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman } 28976baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman else { 29076baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman run_uid = getuid(); 29176baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman run_gid = getgid(); 29276baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman } 29376baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman 29476baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman#ifndef SVR4 29576baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman setreuid(geteuid(), getuid()); 29676baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman#endif 29776baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman 29876baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman /* See if they want to pipe the output. */ 29976baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman if (outfname && (outfname[0] == '|' || outfname[0] == '!')) { 30076baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman if ((outf = popen(outfname + 1, "w")) == NULL) { 30176baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman fprintf(stderr, "%s: can't popen '%s': %s\n", 30276baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman progname, outfname + 1, strerror(errno)); 30376baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman exit(1); 30476baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman } 30576baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman free(outfname); 30676baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman outfname = NULL; 30776baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman } 30876baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman 30976baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman /* Check if they want to redirect the output. */ 31076baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman if (outfname) { 31176baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman if ((outf = fopen(outfname, "w")) == NULL) { 31276baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman fprintf(stderr, "%s: can't fopen '%s': %s\n", 31376baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman progname, outfname, strerror(errno)); 31476baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman exit(1); 31576baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman } 31676baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman } 31776baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman 31876baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman#ifndef SVR4 31976baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman setreuid(geteuid(), getuid()); 32076baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman#endif 32176baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman 32276baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman if (!outfname) { 32376baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman qflag = 1; 32476baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman setvbuf(outf, buf, _IOLBF, BUFSIZ); 32576baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman } 32676baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman else if (optind < argc) 32776baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman interactive = 0; 32876baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman else 32976baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman qflag = 1; 33076baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman 33176baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman for (c = 0, tcp = tcbtab; c < MAX_PROCS; c++, tcp++) { 33276baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman /* Reinitialize the output since it may have changed. */ 33376baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman tcp->outf = outf; 33476baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman if (!(tcp->flags & TCB_INUSE) || !(tcp->flags & TCB_ATTACHED)) 33576baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman continue; 33676baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman#ifdef SVR4 33776baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman if (proc_open(tcp, 1) < 0) { 33876baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman fprintf(stderr, "trouble opening proc file\n"); 33976baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman droptcb(tcp); 34076baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman continue; 34176baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman } 34276baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman#else /* !SVR4 */ 34376baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman if (ptrace(PTRACE_ATTACH, tcp->pid, (char *) 1, 0) < 0) { 34476baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman perror("attach: ptrace(PTRACE_ATTACH, ...)"); 34576baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman droptcb(tcp); 34676baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman continue; 34776baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman } 34876baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman#endif /* !SVR4 */ 34976baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman if (!qflag) 35076baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman fprintf(stderr, 35176baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman "Process %u attached - interrupt to quit\n", 35276baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman pid); 35376baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman } 35476baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman 35576baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman if (optind < argc) { 35676baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman struct stat statbuf; 35776baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman char *filename; 35876baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman char pathname[MAXPATHLEN]; 35976baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman 36076baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman filename = argv[optind]; 36176baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman if (strchr(filename, '/')) 36276baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman strcpy(pathname, filename); 36376baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman#ifdef USE_DEBUGGING_EXEC 36476baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman /* 36576baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman * Debuggers customarily check the current directory 36676baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman * first regardless of the path but doing that gives 36776baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman * security geeks a panic attack. 36876baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman */ 36976baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman else if (stat(filename, &statbuf) == 0) 37076baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman strcpy(pathname, filename); 37176baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman#endif /* USE_DEBUGGING_EXEC */ 37276baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman else { 37376baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman char *path; 37476baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman int m, n, len; 37576baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman 37676baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman for (path = getenv("PATH"); path && *path; path += m) { 37776baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman if (strchr(path, ':')) { 37876baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman n = strchr(path, ':') - path; 37976baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman m = n + 1; 38076baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman } 38176baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman else 38276baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman m = n = strlen(path); 38376baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman if (n == 0) { 38476baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman getcwd(pathname, MAXPATHLEN); 38576baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman len = strlen(pathname); 38676baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman } 38776baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman else { 38876baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman strncpy(pathname, path, n); 38976baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman len = n; 39076baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman } 39176baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman if (len && pathname[len - 1] != '/') 39276baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman pathname[len++] = '/'; 39376baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman strcpy(pathname + len, filename); 39476baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman if (stat(pathname, &statbuf) == 0) 39576baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman break; 39676baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman } 39776baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman } 39876baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman if (stat(pathname, &statbuf) < 0) { 39976baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman fprintf(stderr, "%s: %s: command not found\n", 40076baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman progname, filename); 40176baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman exit(1); 40276baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman } 40376baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman switch (pid = fork()) { 40476baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman case -1: 40576baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman perror("strace: fork"); 40676baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman cleanup(); 40776baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman exit(1); 40876baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman break; 40976baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman case 0: { 41076baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman#ifdef SVR4 411789ed35db520a552ba5ea0a5cbe5b31efa7adde5Wichert Akkerman if (outf != stderr) close (fileno (outf)); 41276baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman#ifdef MIPS 41376baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman /* Kludge for SGI, see proc_open for details. */ 41476baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman sa.sa_handler = foobar; 41576baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman sa.sa_flags = 0; 41676baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman sigemptyset(&sa.sa_mask); 41776baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman sigaction(SIGINT, &sa, NULL); 41876baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman#endif /* MIPS */ 41976baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman pause(); 42076baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman#else /* !SVR4 */ 42176baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman if (ptrace(PTRACE_TRACEME, 0, (char *) 1, 0) < 0) { 42276baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman perror("strace: ptrace(PTRACE_TRACEME, ...)"); 42376baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman return -1; 42476baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman } 42576baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman if (debug) 42676baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman kill(getpid(), SIGSTOP); 42776baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman 42876baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman if (username != NULL || geteuid() == 0) { 42976baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman uid_t run_euid = run_uid; 43076baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman gid_t run_egid = run_gid; 43176baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman 43276baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman if (statbuf.st_mode & S_ISUID) 43376baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman run_euid = statbuf.st_uid; 43476baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman if (statbuf.st_mode & S_ISGID) 43576baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman run_egid = statbuf.st_gid; 43676baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman 43776baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman /* 43876baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman * It is important to set groups before we 43976baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman * lose privileges on setuid. 44076baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman */ 44176baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman if (username != NULL 44276baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman && initgroups(username, run_gid) < 0) { 44376baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman perror("initgroups"); 44476baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman exit(1); 44576baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman } 44676baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman if (setregid(run_gid, run_egid) < 0) { 44776baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman perror("setregid"); 44876baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman exit(1); 44976baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman } 45076baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman if (setreuid(run_uid, run_euid) < 0) { 45176baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman perror("setreuid"); 45276baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman exit(1); 45376baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman } 45476baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman } 45576baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman else 45676baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman setreuid(run_uid, run_uid); 45776baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman#endif /* !SVR4 */ 45876baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman 45976baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman execv(pathname, &argv[optind]); 46076baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman perror("strace: exec"); 46176baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman _exit(1); 46276baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman break; 46376baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman } 46476baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman default: 46576baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman if ((tcp = alloctcb(pid)) == NULL) { 46676baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman fprintf(stderr, "tcb table full\n"); 46776baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman cleanup(); 46876baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman exit(1); 46976baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman } 47076baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman#ifdef SVR4 47176baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman if (proc_open(tcp, 0) < 0) { 47276baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman fprintf(stderr, "trouble opening proc file\n"); 47376baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman cleanup(); 47476baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman exit(1); 47576baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman } 47676baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman#endif /* SVR4 */ 47776baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman#ifndef SVR4 47876baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman fake_execve(tcp, pathname, &argv[optind], environ); 47976baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman#endif 48076baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman break; 48176baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman } 48276baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman } 48376baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman else if (pflag_seen == 0) 48476baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman usage(stderr, 1); 48576baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman 48676baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman sigemptyset(&empty_set); 48776baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman sigemptyset(&blocked_set); 48876baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman sa.sa_handler = SIG_IGN; 48976baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman sigemptyset(&sa.sa_mask); 49076baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman sa.sa_flags = 0; 49176baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman sigaction(SIGTTOU, &sa, NULL); 49276baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman sigaction(SIGTTIN, &sa, NULL); 49376baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman if (interactive) { 49476baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman sigaddset(&blocked_set, SIGHUP); 49576baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman sigaddset(&blocked_set, SIGINT); 49676baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman sigaddset(&blocked_set, SIGQUIT); 49776baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman sigaddset(&blocked_set, SIGPIPE); 49876baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman sigaddset(&blocked_set, SIGTERM); 49976baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman sa.sa_handler = interrupt; 50076baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman#ifdef SUNOS4 50176baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman /* POSIX signals on sunos4.1 are a little broken. */ 50276baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman sa.sa_flags = SA_INTERRUPT; 50376baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman#endif /* SUNOS4 */ 50476baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman } 50576baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman sigaction(SIGHUP, &sa, NULL); 50676baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman sigaction(SIGINT, &sa, NULL); 50776baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman sigaction(SIGQUIT, &sa, NULL); 50876baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman sigaction(SIGPIPE, &sa, NULL); 50976baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman sigaction(SIGTERM, &sa, NULL); 51076baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman#ifdef SVR4 51176baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman sa.sa_handler = reaper; 51276baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman sigaction(SIGCHLD, &sa, NULL); 51376baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman#endif /* SVR4 */ 51476baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman 51576baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman if (trace() < 0) 51676baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman exit(1); 51776baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman cleanup(); 51876baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman exit(0); 51976baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman} 52076baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman 52176baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkermanvoid 52276baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkermannewoutf(tcp) 52376baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkermanstruct tcb *tcp; 52476baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman{ 52576baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman char name[MAXPATHLEN]; 52676baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman FILE *fp; 52776baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman 52876baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman if (outfname && followfork > 1) { 52976baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman sprintf(name, "%s.%u", outfname, tcp->pid); 53076baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman#ifndef SVR4 53176baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman setreuid(geteuid(), getuid()); 53276baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman#endif 53376baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman fp = fopen(name, "w"); 53476baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman#ifndef SVR4 53576baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman setreuid(geteuid(), getuid()); 53676baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman#endif 53776baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman if (fp == NULL) { 53876baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman perror("fopen"); 53976baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman return; 54076baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman } 54176baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman tcp->outf = fp; 54276baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman } 54376baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman return; 54476baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman} 54576baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman 54676baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkermanstruct tcb * 54776baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkermanalloctcb(pid) 54876baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkermanint pid; 54976baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman{ 55076baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman int i; 55176baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman struct tcb *tcp; 55276baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman 55376baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman for (i = 0, tcp = tcbtab; i < MAX_PROCS; i++, tcp++) { 55476baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman if ((tcp->flags & TCB_INUSE) == 0) { 55576baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman tcp->pid = pid; 55676baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman tcp->parent = NULL; 55776baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman tcp->nchildren = 0; 55876baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman tcp->flags = TCB_INUSE | TCB_STARTUP; 55976baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman tcp->outf = outf; /* Initialise to current out file */ 56076baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman tcp->stime.tv_sec = 0; 56176baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman tcp->stime.tv_usec = 0; 56276baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman tcp->pfd = -1; 56376baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman nprocs++; 56476baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman return tcp; 56576baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman } 56676baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman } 56776baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman return NULL; 56876baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman} 56976baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman 57076baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman#ifdef SVR4 57176baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkermanint 57276baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkermanproc_open(tcp, attaching) 57376baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkermanstruct tcb *tcp; 57476baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkermanint attaching; 57576baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman{ 57676baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman char proc[32]; 57776baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman long arg; 57876baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman sysset_t sc_enter, sc_exit; 57976baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman sigset_t signals; 58076baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman fltset_t faults; 58176baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman#ifndef HAVE_POLLABLE_PROCFS 58276baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman static int last_pfd; 58376baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman#endif 58476baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman 585ea78f0f77185f7d6d0b2055805139d96e1be816cWichert Akkerman#ifdef HAVE_MP_PROCFS 5869ce1a63eb20b069607c06f9645ac5a17b418a5f3Wichert Akkerman /* Open the process pseudo-files in /proc. */ 5879ce1a63eb20b069607c06f9645ac5a17b418a5f3Wichert Akkerman sprintf(proc, "/proc/%d/ctl", tcp->pid); 5889ce1a63eb20b069607c06f9645ac5a17b418a5f3Wichert Akkerman if ((tcp->pfd = open(proc, O_WRONLY|O_EXCL)) < 0) { 5899ce1a63eb20b069607c06f9645ac5a17b418a5f3Wichert Akkerman perror("strace: open(\"/proc/...\", ...)"); 5909ce1a63eb20b069607c06f9645ac5a17b418a5f3Wichert Akkerman return -1; 5919ce1a63eb20b069607c06f9645ac5a17b418a5f3Wichert Akkerman } 5929ce1a63eb20b069607c06f9645ac5a17b418a5f3Wichert Akkerman if ((arg = fcntl(tcp->pfd, F_GETFD)) < 0) { 5939ce1a63eb20b069607c06f9645ac5a17b418a5f3Wichert Akkerman perror("F_GETFD"); 5949ce1a63eb20b069607c06f9645ac5a17b418a5f3Wichert Akkerman return -1; 5959ce1a63eb20b069607c06f9645ac5a17b418a5f3Wichert Akkerman } 5969ce1a63eb20b069607c06f9645ac5a17b418a5f3Wichert Akkerman if (fcntl(tcp->pfd, F_SETFD, arg|FD_CLOEXEC) < 0) { 5979ce1a63eb20b069607c06f9645ac5a17b418a5f3Wichert Akkerman perror("F_SETFD"); 5989ce1a63eb20b069607c06f9645ac5a17b418a5f3Wichert Akkerman return -1; 5999ce1a63eb20b069607c06f9645ac5a17b418a5f3Wichert Akkerman } 6009ce1a63eb20b069607c06f9645ac5a17b418a5f3Wichert Akkerman sprintf(proc, "/proc/%d/status", tcp->pid); 6019ce1a63eb20b069607c06f9645ac5a17b418a5f3Wichert Akkerman if ((tcp->pfd_stat = open(proc, O_RDONLY|O_EXCL)) < 0) { 6029ce1a63eb20b069607c06f9645ac5a17b418a5f3Wichert Akkerman perror("strace: open(\"/proc/...\", ...)"); 6039ce1a63eb20b069607c06f9645ac5a17b418a5f3Wichert Akkerman return -1; 6049ce1a63eb20b069607c06f9645ac5a17b418a5f3Wichert Akkerman } 6059ce1a63eb20b069607c06f9645ac5a17b418a5f3Wichert Akkerman if ((arg = fcntl(tcp->pfd_stat, F_GETFD)) < 0) { 6069ce1a63eb20b069607c06f9645ac5a17b418a5f3Wichert Akkerman perror("F_GETFD"); 6079ce1a63eb20b069607c06f9645ac5a17b418a5f3Wichert Akkerman return -1; 6089ce1a63eb20b069607c06f9645ac5a17b418a5f3Wichert Akkerman } 6099ce1a63eb20b069607c06f9645ac5a17b418a5f3Wichert Akkerman if (fcntl(tcp->pfd_stat, F_SETFD, arg|FD_CLOEXEC) < 0) { 6109ce1a63eb20b069607c06f9645ac5a17b418a5f3Wichert Akkerman perror("F_SETFD"); 6119ce1a63eb20b069607c06f9645ac5a17b418a5f3Wichert Akkerman return -1; 6129ce1a63eb20b069607c06f9645ac5a17b418a5f3Wichert Akkerman } 6139ce1a63eb20b069607c06f9645ac5a17b418a5f3Wichert Akkerman sprintf(proc, "/proc/%d/as", tcp->pid); 6149ce1a63eb20b069607c06f9645ac5a17b418a5f3Wichert Akkerman if ((tcp->pfd_as = open(proc, O_RDONLY|O_EXCL)) < 0) { 6159ce1a63eb20b069607c06f9645ac5a17b418a5f3Wichert Akkerman perror("strace: open(\"/proc/...\", ...)"); 6169ce1a63eb20b069607c06f9645ac5a17b418a5f3Wichert Akkerman return -1; 6179ce1a63eb20b069607c06f9645ac5a17b418a5f3Wichert Akkerman } 6189ce1a63eb20b069607c06f9645ac5a17b418a5f3Wichert Akkerman if ((arg = fcntl(tcp->pfd_as, F_GETFD)) < 0) { 6199ce1a63eb20b069607c06f9645ac5a17b418a5f3Wichert Akkerman perror("F_GETFD"); 6209ce1a63eb20b069607c06f9645ac5a17b418a5f3Wichert Akkerman return -1; 6219ce1a63eb20b069607c06f9645ac5a17b418a5f3Wichert Akkerman } 6229ce1a63eb20b069607c06f9645ac5a17b418a5f3Wichert Akkerman if (fcntl(tcp->pfd_as, F_SETFD, arg|FD_CLOEXEC) < 0) { 6239ce1a63eb20b069607c06f9645ac5a17b418a5f3Wichert Akkerman perror("F_SETFD"); 6249ce1a63eb20b069607c06f9645ac5a17b418a5f3Wichert Akkerman return -1; 6259ce1a63eb20b069607c06f9645ac5a17b418a5f3Wichert Akkerman } 6269ce1a63eb20b069607c06f9645ac5a17b418a5f3Wichert Akkerman#else 62776baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman /* Open the process pseudo-file in /proc. */ 62876baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman sprintf(proc, "/proc/%d", tcp->pid); 62976baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman if ((tcp->pfd = open(proc, O_RDWR|O_EXCL)) < 0) { 63076baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman perror("strace: open(\"/proc/...\", ...)"); 63176baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman return -1; 63276baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman } 6339ce1a63eb20b069607c06f9645ac5a17b418a5f3Wichert Akkerman if ((arg = fcntl(tcp->pfd, F_GETFD)) < 0) { 6349ce1a63eb20b069607c06f9645ac5a17b418a5f3Wichert Akkerman perror("F_GETFD"); 6359ce1a63eb20b069607c06f9645ac5a17b418a5f3Wichert Akkerman return -1; 6369ce1a63eb20b069607c06f9645ac5a17b418a5f3Wichert Akkerman } 6379ce1a63eb20b069607c06f9645ac5a17b418a5f3Wichert Akkerman if (fcntl(tcp->pfd, F_SETFD, arg|FD_CLOEXEC) < 0) { 6389ce1a63eb20b069607c06f9645ac5a17b418a5f3Wichert Akkerman perror("F_SETFD"); 6399ce1a63eb20b069607c06f9645ac5a17b418a5f3Wichert Akkerman return -1; 6409ce1a63eb20b069607c06f9645ac5a17b418a5f3Wichert Akkerman } 6419ce1a63eb20b069607c06f9645ac5a17b418a5f3Wichert Akkerman#endif 64276baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman rebuild_pollv(); 64376baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman if (!attaching) { 64476baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman /* 64576baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman * Wait for the child to pause. Because of a race 64676baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman * condition we have to poll for the event. 64776baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman */ 64876baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman for (;;) { 6499ce1a63eb20b069607c06f9645ac5a17b418a5f3Wichert Akkerman if (IOCTL_STATUS (tcp) < 0) { 65076baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman perror("strace: PIOCSTATUS"); 65176baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman return -1; 65276baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman } 6539ce1a63eb20b069607c06f9645ac5a17b418a5f3Wichert Akkerman if (tcp->status.PR_FLAGS & PR_ASLEEP) 65476baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman break; 65576baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman } 65676baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman } 65776baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman /* Stop the process so that we own the stop. */ 6589ce1a63eb20b069607c06f9645ac5a17b418a5f3Wichert Akkerman if (IOCTL(tcp->pfd, PIOCSTOP, NULL) < 0) { 65976baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman perror("strace: PIOCSTOP"); 66076baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman return -1; 66176baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman } 66276baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman#ifdef PIOCSET 66376baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman /* Set Run-on-Last-Close. */ 66476baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman arg = PR_RLC; 6659ce1a63eb20b069607c06f9645ac5a17b418a5f3Wichert Akkerman if (IOCTL(tcp->pfd, PIOCSET, &arg) < 0) { 66676baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman perror("PIOCSET PR_RLC"); 66776baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman return -1; 66876baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman } 66976baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman /* Set or Reset Inherit-on-Fork. */ 67076baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman arg = PR_FORK; 6719ce1a63eb20b069607c06f9645ac5a17b418a5f3Wichert Akkerman if (IOCTL(tcp->pfd, followfork ? PIOCSET : PIOCRESET, &arg) < 0) { 67276baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman perror("PIOC{SET,RESET} PR_FORK"); 67376baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman return -1; 67476baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman } 67576baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman#else /* !PIOCSET */ 67676baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman if (ioctl(tcp->pfd, PIOCSRLC) < 0) { 67776baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman perror("PIOCSRLC"); 67876baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman return -1; 67976baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman } 68076baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman if (ioctl(tcp->pfd, followfork ? PIOCSFORK : PIOCRFORK) < 0) { 68176baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman perror("PIOC{S,R}FORK"); 68276baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman return -1; 68376baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman } 68476baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman#endif /* !PIOCSET */ 68576baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman /* Enable all syscall entries. */ 68676baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman prfillset(&sc_enter); 6879ce1a63eb20b069607c06f9645ac5a17b418a5f3Wichert Akkerman if (IOCTL(tcp->pfd, PIOCSENTRY, &sc_enter) < 0) { 68876baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman perror("PIOCSENTRY"); 68976baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman return -1; 69076baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman } 69176baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman /* Enable all syscall exits. */ 69276baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman prfillset(&sc_exit); 6939ce1a63eb20b069607c06f9645ac5a17b418a5f3Wichert Akkerman if (IOCTL(tcp->pfd, PIOCSEXIT, &sc_exit) < 0) { 69476baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman perror("PIOSEXIT"); 69576baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman return -1; 69676baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman } 69776baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman /* Enable all signals. */ 69876baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman prfillset(&signals); 6999ce1a63eb20b069607c06f9645ac5a17b418a5f3Wichert Akkerman if (IOCTL(tcp->pfd, PIOCSTRACE, &signals) < 0) { 70076baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman perror("PIOCSTRACE"); 70176baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman return -1; 70276baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman } 70376baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman /* Enable all faults. */ 70476baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman prfillset(&faults); 7059ce1a63eb20b069607c06f9645ac5a17b418a5f3Wichert Akkerman if (IOCTL(tcp->pfd, PIOCSFAULT, &faults) < 0) { 70676baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman perror("PIOCSFAULT"); 70776baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman return -1; 70876baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman } 70976baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman if (!attaching) { 71076baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman#ifdef MIPS 71176baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman /* 71276baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman * The SGI PRSABORT doesn't work for pause() so 71376baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman * we send it a caught signal to wake it up. 71476baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman */ 71576baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman kill(tcp->pid, SIGINT); 71676baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman#else /* !MIPS */ 71776baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman /* The child is in a pause(), abort it. */ 7189ce1a63eb20b069607c06f9645ac5a17b418a5f3Wichert Akkerman arg = PRSABORT; 7199ce1a63eb20b069607c06f9645ac5a17b418a5f3Wichert Akkerman if (IOCTL (tcp->pfd, PIOCRUN, &arg) < 0) { 72076baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman perror("PIOCRUN"); 72176baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman return -1; 72276baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman } 72376baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman#endif /* !MIPS */ 72476baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman for (;;) { 72576baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman /* Wait for the child to do something. */ 7269ce1a63eb20b069607c06f9645ac5a17b418a5f3Wichert Akkerman if (IOCTL_WSTOP (tcp) < 0) { 72776baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman perror("PIOCWSTOP"); 72876baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman return -1; 72976baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman } 7309ce1a63eb20b069607c06f9645ac5a17b418a5f3Wichert Akkerman if (tcp->status.PR_WHY == PR_SYSENTRY) { 73176baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman#ifdef HAVE_PR_SYSCALL 73276baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman int scno = tcp->status.pr_syscall; 73376baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman#else /* !HAVE_PR_SYSCALL */ 7349ce1a63eb20b069607c06f9645ac5a17b418a5f3Wichert Akkerman int scno = tcp->status.PR_WHAT; 73576baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman#endif /* !HAVE_PR_SYSCALL */ 73676baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman if (scno == SYS_execve) 73776baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman break; 73876baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman } 73976baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman /* Set it running: maybe execve will be next. */ 7409ce1a63eb20b069607c06f9645ac5a17b418a5f3Wichert Akkerman arg = 0; 7419ce1a63eb20b069607c06f9645ac5a17b418a5f3Wichert Akkerman if (IOCTL(tcp->pfd, PIOCRUN, &arg) < 0) { 74276baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman perror("PIOCRUN"); 74376baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman return -1; 74476baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman } 74576baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman } 74676baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman } 74776baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman#ifndef HAVE_POLLABLE_PROCFS 74876baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman if (proc_poll_pipe[0] != -1) 74976baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman proc_poller(tcp->pfd); 75076baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman else if (nprocs > 1) { 75176baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman proc_poll_open(); 75276baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman proc_poller(last_pfd); 75376baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman proc_poller(tcp->pfd); 75476baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman } 75576baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman last_pfd = tcp->pfd; 75676baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman#endif /* !HAVE_POLLABLE_PROCFS */ 75776baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman return 0; 75876baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman} 75976baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman 76076baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman#endif /* SVR4 */ 76176baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman 76276baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkermanstatic struct tcb * 76376baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkermanpid2tcb(pid) 76476baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkermanint pid; 76576baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman{ 76676baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman int i; 76776baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman struct tcb *tcp; 76876baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman 76976baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman for (i = 0, tcp = tcbtab; i < MAX_PROCS; i++, tcp++) { 77076baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman if (pid && tcp->pid != pid) 77176baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman continue; 77276baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman if (tcp->flags & TCB_INUSE) 77376baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman return tcp; 77476baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman } 77576baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman return NULL; 77676baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman} 77776baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman 77876baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman#ifdef SVR4 77976baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman 78076baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkermanstatic struct tcb * 78176baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkermanpfd2tcb(pfd) 78276baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkermanint pfd; 78376baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman{ 78476baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman int i; 78576baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman struct tcb *tcp; 78676baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman 78776baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman for (i = 0, tcp = tcbtab; i < MAX_PROCS; i++, tcp++) { 78876baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman if (tcp->pfd != pfd) 78976baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman continue; 79076baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman if (tcp->flags & TCB_INUSE) 79176baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman return tcp; 79276baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman } 79376baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman return NULL; 79476baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman} 79576baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman 79676baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman#endif /* SVR4 */ 79776baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman 79876baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkermanvoid 79976baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkermandroptcb(tcp) 80076baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkermanstruct tcb *tcp; 80176baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman{ 80276baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman if (tcp->pid == 0) 80376baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman return; 80476baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman nprocs--; 80576baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman tcp->pid = 0; 80676baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman tcp->flags = 0; 80776baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman if (tcp->pfd != -1) { 80876baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman close(tcp->pfd); 80976baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman tcp->pfd = -1; 81076baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman#ifdef SVR4 81176baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman rebuild_pollv(); 81276baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman#endif 81376baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman } 81476baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman if (tcp->parent != NULL) { 81576baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman tcp->parent->nchildren--; 81676baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman tcp->parent = NULL; 81776baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman } 81876baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman#if 0 81976baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman if (tcp->outf != stderr) 82076baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman fclose(tcp->outf); 82176baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman#endif 82276baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman tcp->outf = 0; 82376baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman} 82476baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman 82576baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman#ifndef SVR4 82676baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman 82776baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkermanstatic int 82876baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkermanresume(tcp) 82976baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkermanstruct tcb *tcp; 83076baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman{ 83176baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman if (tcp == NULL) 83276baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman return -1; 83376baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman 83476baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman if (!(tcp->flags & TCB_SUSPENDED)) { 83576baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman fprintf(stderr, "PANIC: pid %u not suspended\n", tcp->pid); 83676baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman return -1; 83776baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman } 83876baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman tcp->flags &= ~TCB_SUSPENDED; 83976baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman 84076baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman if (ptrace(PTRACE_SYSCALL, tcp->pid, (char *) 1, 0) < 0) { 84176baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman perror("resume: ptrace(PTRACE_SYSCALL, ...)"); 84276baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman return -1; 84376baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman } 84476baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman 84576baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman if (!qflag) 84676baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman fprintf(stderr, "Process %u resumed\n", tcp->pid); 84776baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman return 0; 84876baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman} 84976baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman 85076baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman#endif /* !SVR4 */ 85176baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman 85276baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman/* detach traced process; continue with sig */ 85376baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman 85476baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkermanstatic int 85576baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkermandetach(tcp, sig) 85676baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkermanstruct tcb *tcp; 85776baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkermanint sig; 85876baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman{ 85976baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman int error = 0; 86076baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman#ifdef LINUX 86176baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman int status; 86276baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman#endif 86376baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman 86476baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman if (tcp->flags & TCB_BPTSET) 86576baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman sig = SIGKILL; 86676baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman 86776baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman#ifdef LINUX 86876baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman /* 86976baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman * Linux wrongly insists the child be stopped 87076baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman * before detaching. Arghh. We go through hoops 87176baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman * to make a clean break of things. 87276baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman */ 873dacfb6ebd630641d851b6df94c3b4587969a6cfbWichert Akkerman#if defined(SPARC) 874dacfb6ebd630641d851b6df94c3b4587969a6cfbWichert Akkerman#undef PTRACE_DETACH 875dacfb6ebd630641d851b6df94c3b4587969a6cfbWichert Akkerman#define PTRACE_DETACH PTRACE_SUNDETACH 876dacfb6ebd630641d851b6df94c3b4587969a6cfbWichert Akkerman#endif 87776baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman if ((error = ptrace(PTRACE_DETACH, tcp->pid, (char *) 1, sig)) == 0) { 87876baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman /* On a clear day, you can see forever. */ 87976baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman } 88076baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman else if (errno != ESRCH) { 88176baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman /* Shouldn't happen. */ 88276baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman perror("detach: ptrace(PTRACE_DETACH, ...)"); 88376baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman } 88476baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman else if (kill(tcp->pid, 0) < 0) { 88576baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman if (errno != ESRCH) 88676baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman perror("detach: checking sanity"); 88776baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman } 88876baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman else if (kill(tcp->pid, SIGSTOP) < 0) { 88976baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman if (errno != ESRCH) 89076baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman perror("detach: stopping child"); 89176baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman } 89276baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman else { 89376baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman for (;;) { 89476baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman if (waitpid(tcp->pid, &status, 0) < 0) { 89576baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman if (errno != ECHILD) 89676baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman perror("detach: waiting"); 89776baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman break; 89876baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman } 89976baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman if (!WIFSTOPPED(status)) { 90076baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman /* Au revoir, mon ami. */ 90176baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman break; 90276baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman } 90376baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman if (WSTOPSIG(status) == SIGSTOP) { 90476baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman if ((error = ptrace(PTRACE_DETACH, 90576baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman tcp->pid, (char *) 1, sig)) < 0) { 90676baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman if (errno != ESRCH) 90776baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman perror("detach: ptrace(PTRACE_DETACH, ...)"); 90876baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman /* I died trying. */ 90976baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman } 91076baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman break; 91176baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman } 91276baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman if ((error = ptrace(PTRACE_CONT, tcp->pid, (char *) 1, 91376baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman WSTOPSIG(status) == SIGTRAP ? 91476baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman 0 : WSTOPSIG(status))) < 0) { 91576baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman if (errno != ESRCH) 91676baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman perror("detach: ptrace(PTRACE_CONT, ...)"); 91776baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman break; 91876baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman } 91976baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman } 92076baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman } 92176baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman#endif /* LINUX */ 92276baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman 92376baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman#if defined(SUNOS4) 92476baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman /* PTRACE_DETACH won't respect `sig' argument, so we post it here. */ 92576baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman if (sig && kill(tcp->pid, sig) < 0) 92676baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman perror("detach: kill"); 92776baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman sig = 0; 92876baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman if ((error = ptrace(PTRACE_DETACH, tcp->pid, (char *) 1, sig)) < 0) 92976baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman perror("detach: ptrace(PTRACE_DETACH, ...)"); 93076baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman#endif /* SUNOS4 */ 93176baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman 93276baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman#ifndef SVR4 93376baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman if (waiting_parent(tcp)) 93476baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman error = resume(tcp->parent); 93576baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman#endif /* !SVR4 */ 93676baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman 93776baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman if (!qflag) 93876baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman fprintf(stderr, "Process %u detached\n", tcp->pid); 93976baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman 94076baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman droptcb(tcp); 94176baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman return error; 94276baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman} 94376baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman 94476baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman#ifdef SVR4 94576baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman 94676baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkermanstatic void 94776baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkermanreaper(sig) 94876baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkermanint sig; 94976baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman{ 95076baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman int pid; 95176baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman int status; 95276baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman 95376baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman while ((pid = waitpid(-1, &status, WNOHANG)) > 0) { 95476baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman#if 0 95576baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman struct tcb *tcp; 95676baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman 95776baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman tcp = pid2tcb(pid); 95876baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman if (tcp) 95976baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman droptcb(tcp); 96076baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman#endif 96176baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman } 96276baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman} 96376baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman 96476baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman#endif /* SVR4 */ 96576baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman 96676baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkermanstatic void 96776baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkermancleanup() 96876baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman{ 96976baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman int i; 97076baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman struct tcb *tcp; 97176baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman 97276baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman for (i = 0, tcp = tcbtab; i < MAX_PROCS; i++, tcp++) { 97376baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman if (!(tcp->flags & TCB_INUSE)) 97476baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman continue; 97576baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman if (debug) 97676baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman fprintf(stderr, 97776baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman "cleanup: looking at pid %u\n", tcp->pid); 97876baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman if (tcp_last && 97976baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman (!outfname || followfork < 2 || tcp_last == tcp)) { 98076baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman tprintf(" <unfinished ...>\n"); 98176baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman tcp_last = NULL; 98276baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman } 98376baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman if (tcp->flags & TCB_ATTACHED) 98476baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman detach(tcp, 0); 98576baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman else { 98676baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman kill(tcp->pid, SIGCONT); 98776baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman kill(tcp->pid, SIGTERM); 98876baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman } 98976baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman } 99076baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman if (cflag) 99176baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman call_summary(outf); 99276baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman} 99376baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman 99476baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkermanstatic void 99576baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkermaninterrupt(sig) 99676baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkermanint sig; 99776baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman{ 99876baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman interrupted = 1; 99976baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman} 100076baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman 100176baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman#ifndef HAVE_STRERROR 100276baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman 100376baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman#ifndef SYS_ERRLIST_DECLARED 100476baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkermanextern int sys_nerr; 100576baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkermanextern char *sys_errlist[]; 100676baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman#endif /* SYS_ERRLIST_DECLARED */ 100776baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman 100876baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkermanconst char * 100976baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkermanstrerror(errno) 101076baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkermanint errno; 101176baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman{ 101276baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman static char buf[64]; 101376baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman 101476baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman if (errno < 1 || errno >= sys_nerr) { 101576baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman sprintf(buf, "Unknown error %d", errno); 101676baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman return buf; 101776baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman } 101876baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman return sys_errlist[errno]; 101976baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman} 102076baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman 102176baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman#endif /* HAVE_STERRROR */ 102276baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman 102376baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman#ifndef HAVE_STRSIGNAL 102476baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman 102576baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman#ifndef SYS_SIGLIST_DECLARED 102676baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman#ifdef HAVE__SYS_SIGLIST 102776baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman extern char *_sys_siglist[]; 102876baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman#else 102976baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman extern char *sys_siglist[]; 103076baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman#endif 103176baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman#endif /* SYS_SIGLIST_DECLARED */ 103276baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman 103376baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkermanconst char * 103476baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkermanstrsignal(sig) 103576baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkermanint sig; 103676baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman{ 103776baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman static char buf[64]; 103876baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman 103976baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman if (sig < 1 || sig >= NSIG) { 104076baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman sprintf(buf, "Unknown signal %d", sig); 104176baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman return buf; 104276baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman } 104376baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman#ifdef HAVE__SYS_SIGLIST 104476baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman return _sys_siglist[sig]; 104576baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman#else 104676baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman return sys_siglist[sig]; 104776baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman#endif 104876baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman} 104976baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman 105076baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman#endif /* HAVE_STRSIGNAL */ 105176baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman 105276baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman#ifdef SVR4 105376baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman 105476baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkermanstatic void 105576baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkermanrebuild_pollv() 105676baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman{ 105776baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman int i, j; 105876baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman struct tcb *tcp; 105976baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman 106076baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman for (i = j = 0, tcp = tcbtab; i < MAX_PROCS; i++, tcp++) { 106176baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman if (!(tcp->flags & TCB_INUSE)) 106276baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman continue; 106376baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman pollv[j].fd = tcp->pfd; 10649ce1a63eb20b069607c06f9645ac5a17b418a5f3Wichert Akkerman pollv[j].events = POLLWANT; 106576baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman j++; 106676baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman } 106776baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman if (j != nprocs) { 106876baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman fprintf(stderr, "strace: proc miscount\n"); 106976baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman exit(1); 107076baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman } 107176baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman} 107276baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman 107376baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman#ifndef HAVE_POLLABLE_PROCFS 107476baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman 107576baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkermanstatic void 107676baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkermanproc_poll_open() 107776baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman{ 107876baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman int arg; 107976baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman int i; 108076baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman 108176baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman if (pipe(proc_poll_pipe) < 0) { 108276baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman perror("pipe"); 108376baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman exit(1); 108476baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman } 108576baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman for (i = 0; i < 2; i++) { 108676baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman if ((arg = fcntl(proc_poll_pipe[i], F_GETFD)) < 0) { 108776baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman perror("F_GETFD"); 108876baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman exit(1); 108976baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman } 109076baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman if (fcntl(proc_poll_pipe[i], F_SETFD, arg|FD_CLOEXEC) < 0) { 109176baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman perror("F_SETFD"); 109276baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman exit(1); 109376baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman } 109476baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman } 109576baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman} 109676baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman 109776baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkermanstatic int 109876baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkermanproc_poll(pollv, nfds, timeout) 109976baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkermanstruct pollfd *pollv; 110076baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkermanint nfds; 110176baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkermanint timeout; 110276baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman{ 110376baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman int i; 110476baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman int n; 110576baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman struct proc_pollfd pollinfo; 110676baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman 110776baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman if ((n = read(proc_poll_pipe[0], &pollinfo, sizeof(pollinfo))) < 0) 110876baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman return n; 110976baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman if (n != sizeof(struct proc_pollfd)) { 111076baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman fprintf(stderr, "panic: short read: %d\n", n); 111176baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman exit(1); 111276baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman } 111376baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman for (i = 0; i < nprocs; i++) { 111476baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman if (pollv[i].fd == pollinfo.fd) 111576baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman pollv[i].revents = pollinfo.revents; 111676baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman else 111776baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman pollv[i].revents = 0; 111876baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman } 111976baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman poller_pid = pollinfo.pid; 112076baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman return 1; 112176baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman} 112276baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman 112376baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkermanstatic void 112476baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkermanwakeup_handler(sig) 112576baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkermanint sig; 112676baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman{ 112776baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman} 112876baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman 112976baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkermanstatic void 113076baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkermanproc_poller(pfd) 113176baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkermanint pfd; 113276baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman{ 113376baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman struct proc_pollfd pollinfo; 113476baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman struct sigaction sa; 113576baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman sigset_t blocked_set, empty_set; 113676baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman int i; 113776baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman int n; 113876baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman struct rlimit rl; 113976baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman 114076baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman switch (fork()) { 114176baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman case -1: 114276baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman perror("fork"); 114376baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman _exit(0); 114476baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman case 0: 114576baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman break; 114676baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman default: 114776baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman return; 114876baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman } 114976baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman 115076baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman sa.sa_handler = interactive ? SIG_DFL : SIG_IGN; 115176baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman sa.sa_flags = 0; 115276baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman sigemptyset(&sa.sa_mask); 115376baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman sigaction(SIGHUP, &sa, NULL); 115476baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman sigaction(SIGINT, &sa, NULL); 115576baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman sigaction(SIGQUIT, &sa, NULL); 115676baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman sigaction(SIGPIPE, &sa, NULL); 115776baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman sigaction(SIGTERM, &sa, NULL); 115876baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman sa.sa_handler = wakeup_handler; 115976baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman sigaction(SIGUSR1, &sa, NULL); 116076baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman sigemptyset(&blocked_set); 116176baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman sigaddset(&blocked_set, SIGUSR1); 116276baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman sigprocmask(SIG_BLOCK, &blocked_set, NULL); 116376baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman sigemptyset(&empty_set); 116476baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman 116576baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman if (getrlimit(RLIMIT_NOFILE, &rl) < 0) { 116676baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman perror("getrlimit(RLIMIT_NOFILE, ...)"); 116776baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman _exit(0); 116876baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman } 116976baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman n = rl.rlim_cur; 117076baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman for (i = 0; i < n; i++) { 117176baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman if (i != pfd && i != proc_poll_pipe[1]) 117276baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman close(i); 117376baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman } 117476baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman 117576baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman pollinfo.fd = pfd; 117676baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman pollinfo.pid = getpid(); 117776baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman for (;;) { 11789ce1a63eb20b069607c06f9645ac5a17b418a5f3Wichert Akkerman if (ioctl(pfd, PIOCWSTOP, NULL) < 0) 11799ce1a63eb20b069607c06f9645ac5a17b418a5f3Wichert Akkerman { 118076baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman switch (errno) { 118176baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman case EINTR: 118276baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman continue; 118376baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman case EBADF: 118476baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman pollinfo.revents = POLLERR; 118576baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman break; 118676baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman case ENOENT: 118776baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman pollinfo.revents = POLLHUP; 118876baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman break; 118976baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman default: 119076baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman perror("proc_poller: PIOCWSTOP"); 119176baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman } 119276baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman write(proc_poll_pipe[1], &pollinfo, sizeof(pollinfo)); 119376baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman _exit(0); 119476baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman } 11959ce1a63eb20b069607c06f9645ac5a17b418a5f3Wichert Akkerman pollinfo.revents = POLLWANT; 119676baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman write(proc_poll_pipe[1], &pollinfo, sizeof(pollinfo)); 119776baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman sigsuspend(&empty_set); 119876baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman } 119976baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman} 120076baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman 120176baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman#endif /* !HAVE_POLLABLE_PROCFS */ 120276baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman 120376baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkermanstatic int 120476baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkermanchoose_pfd() 120576baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman{ 120676baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman int i, j; 120776baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman struct tcb *tcp; 120876baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman 120976baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman static int last; 121076baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman 121176baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman if (followfork < 2 && 12129ce1a63eb20b069607c06f9645ac5a17b418a5f3Wichert Akkerman last < nprocs && (pollv[last].revents & POLLWANT)) { 121376baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman /* 121476baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman * The previous process is ready to run again. We'll 121576baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman * let it do so if it is currently in a syscall. This 121676baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman * heuristic improves the readability of the trace. 121776baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman */ 121876baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman tcp = pfd2tcb(pollv[last].fd); 121976baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman if (tcp && (tcp->flags & TCB_INSYSCALL)) 122076baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman return pollv[last].fd; 122176baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman } 122276baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman 122376baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman for (i = 0; i < nprocs; i++) { 122476baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman /* Let competing children run round robin. */ 122576baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman j = (i + last + 1) % nprocs; 122676baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman if (pollv[j].revents & (POLLHUP | POLLERR)) { 122776baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman tcp = pfd2tcb(pollv[j].fd); 122876baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman if (!tcp) { 122976baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman fprintf(stderr, "strace: lost proc\n"); 123076baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman exit(1); 123176baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman } 123276baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman droptcb(tcp); 123376baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman return -1; 123476baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman } 12359ce1a63eb20b069607c06f9645ac5a17b418a5f3Wichert Akkerman if (pollv[j].revents & POLLWANT) { 123676baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman last = j; 123776baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman return pollv[j].fd; 123876baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman } 123976baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman } 124076baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman fprintf(stderr, "strace: nothing ready\n"); 124176baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman exit(1); 124276baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman} 124376baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman 124476baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkermanstatic int 124576baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkermantrace() 124676baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman{ 12479dbf15466e9c178ac4090eba2c1232e2fe0706f9Wichert Akkerman#ifdef POLL_HACK 12489dbf15466e9c178ac4090eba2c1232e2fe0706f9Wichert Akkerman struct tcb *in_syscall; 12499dbf15466e9c178ac4090eba2c1232e2fe0706f9Wichert Akkerman#endif 125076baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman struct tcb *tcp; 125176baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman int pfd; 125276baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman int what; 125376baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman int ioctl_result = 0, ioctl_errno = 0; 12549ce1a63eb20b069607c06f9645ac5a17b418a5f3Wichert Akkerman long arg; 125576baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman 125676baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman for (;;) { 125776baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman if (interactive) 125876baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman sigprocmask(SIG_SETMASK, &empty_set, NULL); 125976baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman 126076baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman if (nprocs == 0) 126176baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman break; 126276baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman 126376baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman switch (nprocs) { 126476baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman case 1: 126576baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman#ifndef HAVE_POLLABLE_PROCFS 126676baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman if (proc_poll_pipe[0] == -1) { 126776baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman#endif 126876baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman tcp = pid2tcb(0); 126976baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman if (!tcp) 127076baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman continue; 127176baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman pfd = tcp->pfd; 127276baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman if (pfd == -1) 127376baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman continue; 127476baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman break; 127576baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman#ifndef HAVE_POLLABLE_PROCFS 127676baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman } 127776baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman /* fall through ... */ 127876baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman#endif /* !HAVE_POLLABLE_PROCFS */ 127976baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman default: 128076baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman#ifdef HAVE_POLLABLE_PROCFS 12819dbf15466e9c178ac4090eba2c1232e2fe0706f9Wichert Akkerman#ifdef POLL_HACK 12829dbf15466e9c178ac4090eba2c1232e2fe0706f9Wichert Akkerman /* On some systems (e.g. UnixWare) we get too much ugly 12839dbf15466e9c178ac4090eba2c1232e2fe0706f9Wichert Akkerman "unfinished..." stuff when multiple proceses are in 12849dbf15466e9c178ac4090eba2c1232e2fe0706f9Wichert Akkerman syscalls. Here's a nasty hack */ 12859dbf15466e9c178ac4090eba2c1232e2fe0706f9Wichert Akkerman 12869dbf15466e9c178ac4090eba2c1232e2fe0706f9Wichert Akkerman if (in_syscall) { 12879dbf15466e9c178ac4090eba2c1232e2fe0706f9Wichert Akkerman struct pollfd pv; 12889dbf15466e9c178ac4090eba2c1232e2fe0706f9Wichert Akkerman tcp = in_syscall; 12899dbf15466e9c178ac4090eba2c1232e2fe0706f9Wichert Akkerman in_syscall = NULL; 12909dbf15466e9c178ac4090eba2c1232e2fe0706f9Wichert Akkerman pv.fd = tcp->pfd; 12919dbf15466e9c178ac4090eba2c1232e2fe0706f9Wichert Akkerman pv.events = POLLWANT; 12929dbf15466e9c178ac4090eba2c1232e2fe0706f9Wichert Akkerman if ((what = poll (&pv, 1, 1)) < 0) { 12939dbf15466e9c178ac4090eba2c1232e2fe0706f9Wichert Akkerman if (interrupted) 12949dbf15466e9c178ac4090eba2c1232e2fe0706f9Wichert Akkerman return 0; 12959dbf15466e9c178ac4090eba2c1232e2fe0706f9Wichert Akkerman continue; 12969dbf15466e9c178ac4090eba2c1232e2fe0706f9Wichert Akkerman } 12979dbf15466e9c178ac4090eba2c1232e2fe0706f9Wichert Akkerman else if (what == 1 && pv.revents & POLLWANT) { 12989dbf15466e9c178ac4090eba2c1232e2fe0706f9Wichert Akkerman goto FOUND; 12999dbf15466e9c178ac4090eba2c1232e2fe0706f9Wichert Akkerman } 13009dbf15466e9c178ac4090eba2c1232e2fe0706f9Wichert Akkerman } 13019dbf15466e9c178ac4090eba2c1232e2fe0706f9Wichert Akkerman#endif 13029dbf15466e9c178ac4090eba2c1232e2fe0706f9Wichert Akkerman 130376baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman if (poll(pollv, nprocs, INFTIM) < 0) { 130476baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman if (interrupted) 130576baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman return 0; 130676baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman continue; 130776baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman } 130876baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman#else /* !HAVE_POLLABLE_PROCFS */ 130976baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman if (proc_poll(pollv, nprocs, INFTIM) < 0) { 131076baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman if (interrupted) 131176baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman return 0; 131276baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman continue; 131376baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman } 131476baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman#endif /* !HAVE_POLLABLE_PROCFS */ 131576baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman pfd = choose_pfd(); 131676baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman if (pfd == -1) 131776baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman continue; 131876baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman break; 131976baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman } 132076baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman 132176baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman /* Look up `pfd' in our table. */ 132276baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman if ((tcp = pfd2tcb(pfd)) == NULL) { 132376baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman fprintf(stderr, "unknown pfd: %u\n", pfd); 132476baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman exit(1); 132576baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman } 13269dbf15466e9c178ac4090eba2c1232e2fe0706f9Wichert Akkerman FOUND: 132776baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman /* Get the status of the process. */ 132876baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman if (!interrupted) { 13299ce1a63eb20b069607c06f9645ac5a17b418a5f3Wichert Akkerman ioctl_result = IOCTL_WSTOP (tcp); 133076baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman ioctl_errno = errno; 133176baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman#ifndef HAVE_POLLABLE_PROCFS 133276baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman if (proc_poll_pipe[0] != -1) { 133376baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman if (ioctl_result < 0) 133476baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman kill(poller_pid, SIGKILL); 133576baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman else 133676baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman kill(poller_pid, SIGUSR1); 133776baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman } 133876baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman#endif /* !HAVE_POLLABLE_PROCFS */ 133976baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman } 134076baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman if (interrupted) 134176baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman return 0; 134276baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman 134376baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman if (interactive) 134476baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman sigprocmask(SIG_BLOCK, &blocked_set, NULL); 134576baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman 134676baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman if (ioctl_result < 0) { 134776baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman /* Find out what happened if it failed. */ 134876baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman switch (ioctl_errno) { 134976baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman case EINTR: 135076baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman case EBADF: 135176baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman continue; 135276baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman case ENOENT: 135376baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman droptcb(tcp); 135476baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman continue; 135576baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman default: 135676baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman perror("PIOCWSTOP"); 135776baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman exit(1); 135876baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman } 135976baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman } 136076baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman 136176baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman /* clear the just started flag */ 136276baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman tcp->flags &= ~TCB_STARTUP; 136376baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman 136476baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman /* set current output file */ 136576baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman outf = tcp->outf; 136676baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman 136776baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman if (cflag) { 136876baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman struct timeval stime; 136976baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman 137076baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman stime.tv_sec = tcp->status.pr_stime.tv_sec; 137176baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman stime.tv_usec = tcp->status.pr_stime.tv_nsec/1000; 137276baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman tv_sub(&tcp->dtime, &stime, &tcp->stime); 137376baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman tcp->stime = stime; 137476baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman } 137576baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman 13769ce1a63eb20b069607c06f9645ac5a17b418a5f3Wichert Akkerman what = tcp->status.PR_WHAT; 13779ce1a63eb20b069607c06f9645ac5a17b418a5f3Wichert Akkerman switch (tcp->status.PR_WHY) { 137876baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman case PR_REQUESTED: 13799ce1a63eb20b069607c06f9645ac5a17b418a5f3Wichert Akkerman if (tcp->status.PR_FLAGS & PR_ASLEEP) { 13809ce1a63eb20b069607c06f9645ac5a17b418a5f3Wichert Akkerman tcp->status.PR_WHY = PR_SYSENTRY; 138176baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman if (trace_syscall(tcp) < 0) { 138276baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman fprintf(stderr, "syscall trouble\n"); 138376baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman exit(1); 138476baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman } 138576baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman } 138676baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman break; 138776baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman case PR_SYSENTRY: 13889dbf15466e9c178ac4090eba2c1232e2fe0706f9Wichert Akkerman#ifdef POLL_HACK 13899dbf15466e9c178ac4090eba2c1232e2fe0706f9Wichert Akkerman in_syscall = tcp; 13909dbf15466e9c178ac4090eba2c1232e2fe0706f9Wichert Akkerman#endif 139176baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman case PR_SYSEXIT: 139276baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman if (trace_syscall(tcp) < 0) { 139376baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman fprintf(stderr, "syscall trouble\n"); 139476baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman exit(1); 139576baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman } 139676baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman break; 139776baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman case PR_SIGNALLED: 139876baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman if (!cflag && (qual_flags[what] & QUAL_SIGNAL)) { 139976baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman printleader(tcp); 140076baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman tprintf("--- %s (%s) ---", 1401ce780fc9e6067b15b65ca2904c698c77503bf635Nate Sammons signame(what), strsignal(what)); 140276baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman printtrailer(tcp); 140376baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman } 140476baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman break; 140576baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman case PR_FAULTED: 140676baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman if (!cflag && (qual_flags[what] & QUAL_FAULT)) { 140776baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman printleader(tcp); 140876baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman tprintf("=== FAULT %d ===", what); 140976baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman printtrailer(tcp); 141076baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman } 141176baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman break; 141276baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman default: 14139ce1a63eb20b069607c06f9645ac5a17b418a5f3Wichert Akkerman fprintf(stderr, "odd stop %d\n", tcp->status.PR_WHY); 141476baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman exit(1); 141576baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman break; 141676baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman } 14179ce1a63eb20b069607c06f9645ac5a17b418a5f3Wichert Akkerman arg = 0; 14189ce1a63eb20b069607c06f9645ac5a17b418a5f3Wichert Akkerman if (IOCTL (tcp->pfd, PIOCRUN, &arg) < 0) { 141976baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman perror("PIOCRUN"); 142076baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman exit(1); 142176baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman } 142276baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman } 142376baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman return 0; 142476baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman} 142576baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman 142676baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman#else /* !SVR4 */ 142776baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman 142876baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkermanstatic int 142976baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkermantrace() 143076baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman{ 143176baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman int pid; 143276baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman int wait_errno; 143376baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman int status; 143476baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman struct tcb *tcp; 143576baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman#ifdef LINUX 143676baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman struct rusage ru; 143776baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman#endif /* LINUX */ 143876baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman 143976baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman while (nprocs != 0) { 144076baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman if (interactive) 144176baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman sigprocmask(SIG_SETMASK, &empty_set, NULL); 144276baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman#ifdef LINUX 144376baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman pid = wait4(-1, &status, 0, cflag ? &ru : NULL); 144476baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman#endif /* LINUX */ 144576baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman#ifdef SUNOS4 144676baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman pid = wait(&status); 144776baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman#endif /* SUNOS4 */ 144876baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman wait_errno = errno; 144976baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman if (interactive) 145076baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman sigprocmask(SIG_BLOCK, &blocked_set, NULL); 145176baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman 145276baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman if (interrupted) 145376baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman return 0; 145476baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman 145576baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman if (pid == -1) { 145676baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman switch (wait_errno) { 145776baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman case EINTR: 145876baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman continue; 145976baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman case ECHILD: 146076baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman /* 146176baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman * We would like to verify this case 146276baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman * but sometimes a race in Solbourne's 146376baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman * version of SunOS sometimes reports 146476baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman * ECHILD before sending us SIGCHILD. 146576baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman */ 146676baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman#if 0 146776baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman if (nprocs == 0) 146876baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman return 0; 146976baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman fprintf(stderr, "strace: proc miscount\n"); 147076baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman exit(1); 147176baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman#endif 147276baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman return 0; 147376baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman default: 147476baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman errno = wait_errno; 147576baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman perror("strace: wait"); 147676baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman return -1; 147776baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman } 147876baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman } 147976baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman if (debug) 148076baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman fprintf(stderr, " [wait(%#x) = %u]\n", status, pid); 148176baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman 148276baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman /* Look up `pid' in our table. */ 148376baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman if ((tcp = pid2tcb(pid)) == NULL) { 148476baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman fprintf(stderr, "unknown pid: %u\n", pid); 148576baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman if (WIFSTOPPED(status)) 148676baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman ptrace(PTRACE_CONT, pid, (char *) 1, 0); 148776baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman exit(1); 148876baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman } 148976baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman /* set current output file */ 149076baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman outf = tcp->outf; 149176baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman if (cflag) { 149276baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman#ifdef LINUX 149376baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman tv_sub(&tcp->dtime, &ru.ru_stime, &tcp->stime); 149476baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman tcp->stime = ru.ru_stime; 149576baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman#endif /* !LINUX */ 149676baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman } 149776baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman 149876baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman if (tcp->flags & TCB_SUSPENDED) { 149976baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman /* 150076baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman * Apparently, doing any ptrace() call on a stopped 150176baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman * process, provokes the kernel to report the process 150276baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman * status again on a subsequent wait(), even if the 150376baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman * process has not been actually restarted. 150476baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman * Since we have inspected the arguments of suspended 150576baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman * processes we end up here testing for this case. 150676baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman */ 150776baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman continue; 150876baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman } 150976baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman if (WIFSIGNALED(status)) { 151076baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman if (!cflag 151176baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman && (qual_flags[WTERMSIG(status)] & QUAL_SIGNAL)) { 151276baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman printleader(tcp); 151376baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman tprintf("+++ killed by %s +++", 1514ce780fc9e6067b15b65ca2904c698c77503bf635Nate Sammons signame(WTERMSIG(status))); 151576baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman printtrailer(tcp); 151676baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman } 151776baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman droptcb(tcp); 151876baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman continue; 151976baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman } 152076baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman if (WIFEXITED(status)) { 152176baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman if (debug) 152276baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman fprintf(stderr, "pid %u exited\n", pid); 152376baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman if (tcp->flags & TCB_ATTACHED) 152476baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman fprintf(stderr, 152576baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman "PANIC: attached pid %u exited\n", 152676baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman pid); 152776baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman droptcb(tcp); 152876baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman continue; 152976baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman } 153076baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman if (!WIFSTOPPED(status)) { 153176baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman fprintf(stderr, "PANIC: pid %u not stopped\n", pid); 153276baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman droptcb(tcp); 153376baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman continue; 153476baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman } 153576baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman if (debug) 153676baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman fprintf(stderr, "pid %u stopped, [%s]\n", 1537ce780fc9e6067b15b65ca2904c698c77503bf635Nate Sammons pid, signame(WSTOPSIG(status))); 153876baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman 153976baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman if (tcp->flags & TCB_STARTUP) { 154076baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman /* 154176baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman * This flag is there to keep us in sync. 154276baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman * Next time this process stops it should 154376baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman * really be entering a system call. 154476baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman */ 154576baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman tcp->flags &= ~TCB_STARTUP; 154676baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman if (tcp->flags & TCB_ATTACHED) { 154776baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman /* 154876baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman * Interestingly, the process may stop 154976baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman * with STOPSIG equal to some other signal 155076baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman * than SIGSTOP if we happend to attach 155176baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman * just before the process takes a signal. 155276baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman */ 155376baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman if (!WIFSTOPPED(status)) { 155476baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman fprintf(stderr, 155576baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman "pid %u not stopped\n", pid); 155676baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman detach(tcp, WSTOPSIG(status)); 155776baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman continue; 155876baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman } 155976baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman } 156076baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman else { 156176baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman#ifdef SUNOS4 156276baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman /* A child of us stopped at exec */ 156376baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman if (WSTOPSIG(status) == SIGTRAP && followvfork) 156476baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman fixvfork(tcp); 156576baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman#endif /* SUNOS4 */ 156676baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman } 156776baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman if (tcp->flags & TCB_BPTSET) { 156876baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman if (clearbpt(tcp) < 0) /* Pretty fatal */ { 156976baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman droptcb(tcp); 157076baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman cleanup(); 157176baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman return -1; 157276baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman } 157376baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman } 157476baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman goto tracing; 157576baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman } 157676baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman 157776baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman if (WSTOPSIG(status) != SIGTRAP) { 157876baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman if (WSTOPSIG(status) == SIGSTOP && 157976baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman (tcp->flags & TCB_SIGTRAPPED)) { 158076baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman /* 158176baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman * Trapped attempt to block SIGTRAP 158276baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman * Hope we are back in control now. 158376baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman */ 158476baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman tcp->flags &= ~(TCB_INSYSCALL | TCB_SIGTRAPPED); 158576baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman if (ptrace(PTRACE_SYSCALL, 158676baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman pid, (char *) 1, 0) < 0) { 158776baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman perror("trace: ptrace(PTRACE_SYSCALL, ...)"); 158876baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman cleanup(); 158976baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman return -1; 159076baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman } 159176baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman continue; 159276baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman } 159376baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman if (!cflag 159476baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman && (qual_flags[WSTOPSIG(status)] & QUAL_SIGNAL)) { 159576baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman printleader(tcp); 159676baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman tprintf("--- %s (%s) ---", 1597ce780fc9e6067b15b65ca2904c698c77503bf635Nate Sammons signame(WSTOPSIG(status)), 159876baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman strsignal(WSTOPSIG(status))); 159976baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman printtrailer(tcp); 160076baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman } 160176baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman if ((tcp->flags & TCB_ATTACHED) && 160276baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman !sigishandled(tcp, WSTOPSIG(status))) { 160376baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman detach(tcp, WSTOPSIG(status)); 160476baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman continue; 160576baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman } 160676baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman if (ptrace(PTRACE_SYSCALL, pid, (char *) 1, 160776baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman WSTOPSIG(status)) < 0) { 160876baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman perror("trace: ptrace(PTRACE_SYSCALL, ...)"); 160976baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman cleanup(); 161076baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman return -1; 161176baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman } 161276baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman tcp->flags &= ~TCB_SUSPENDED; 161376baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman continue; 161476baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman } 161576baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman if (trace_syscall(tcp) < 0) { 161676baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman if (tcp->flags & TCB_ATTACHED) 161776baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman detach(tcp, 0); 161876baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman else { 161976baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman ptrace(PTRACE_KILL, 162076baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman tcp->pid, (char *) 1, SIGTERM); 162176baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman droptcb(tcp); 162276baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman } 162376baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman continue; 162476baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman } 162576baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman if (tcp->flags & TCB_EXITING) { 162676baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman if (tcp->flags & TCB_ATTACHED) 162776baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman detach(tcp, 0); 162876baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman else if (ptrace(PTRACE_CONT, pid, (char *) 1, 0) < 0) { 162976baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman perror("strace: ptrace(PTRACE_CONT, ...)"); 163076baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman cleanup(); 163176baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman return -1; 163276baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman } 163376baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman continue; 163476baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman } 163576baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman if (tcp->flags & TCB_SUSPENDED) { 163676baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman if (!qflag) 163776baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman fprintf(stderr, "Process %u suspended\n", pid); 163876baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman continue; 163976baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman } 164076baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman tracing: 164176baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman if (ptrace(PTRACE_SYSCALL, pid, (char *) 1, 0) < 0) { 164276baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman perror("trace: ptrace(PTRACE_SYSCALL, ...)"); 164376baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman cleanup(); 164476baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman return -1; 164576baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman } 164676baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman } 164776baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman return 0; 164876baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman} 164976baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman 165076baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman#endif /* !SVR4 */ 165176baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman 165276baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkermanstatic int curcol; 165376baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman 165476baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman#ifdef __STDC__ 165576baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman#include <stdarg.h> 165676baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman#define VA_START(a, b) va_start(a, b) 165776baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman#else 165876baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman#include <varargs.h> 165976baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman#define VA_START(a, b) va_start(a) 166076baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman#endif 166176baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman 166276baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkermanvoid 166376baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman#ifdef __STDC__ 166476baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkermantprintf(const char *fmt, ...) 166576baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman#else 166676baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkermantprintf(fmt, va_alist) 166776baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkermanchar *fmt; 166876baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkermanva_dcl 166976baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman#endif 167076baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman{ 167176baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman va_list args; 167276baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman 167376baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman VA_START(args, fmt); 167476baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman if (outf) 167576baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman curcol += vfprintf(outf, fmt, args); 167676baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman va_end(args); 167776baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman return; 167876baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman} 167976baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman 168076baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkermanvoid 168176baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkermanprintleader(tcp) 168276baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkermanstruct tcb *tcp; 168376baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman{ 168476baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman if (tcp_last && (!outfname || followfork < 2 || tcp_last == tcp)) { 168576baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman tcp_last->flags |= TCB_REPRINT; 168676baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman tprintf(" <unfinished ...>\n"); 168776baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman } 168876baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman curcol = 0; 168976baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman if ((followfork == 1 || pflag_seen > 1) && outfname) 169076baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman tprintf("%-5d ", tcp->pid); 169176baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman else if (nprocs > 1 && !outfname) 169276baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman tprintf("[pid %5u] ", tcp->pid); 169376baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman if (tflag) { 169476baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman char str[sizeof("HH:MM:SS")]; 169576baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman struct timeval tv, dtv; 169676baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman static struct timeval otv; 169776baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman 169876baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman gettimeofday(&tv, NULL); 169976baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman if (rflag) { 170076baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman if (otv.tv_sec == 0) 170176baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman otv = tv; 170276baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman tv_sub(&dtv, &tv, &otv); 170376baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman tprintf("%6ld.%06ld ", 170476baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman (long) dtv.tv_sec, (long) dtv.tv_usec); 170576baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman otv = tv; 170676baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman } 170776baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman else if (tflag > 2) { 170876baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman tprintf("%ld.%06ld ", 170976baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman (long) tv.tv_sec, (long) tv.tv_usec); 171076baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman } 171176baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman else { 171276baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman time_t local = tv.tv_sec; 171376baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman strftime(str, sizeof(str), "%T", localtime(&local)); 171476baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman if (tflag > 1) 171576baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman tprintf("%s.%06ld ", str, (long) tv.tv_usec); 171676baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman else 171776baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman tprintf("%s ", str); 171876baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman } 171976baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman } 172076baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman if (iflag) 172176baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman printcall(tcp); 172276baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman} 172376baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman 172476baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkermanvoid 172576baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkermantabto(col) 172676baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkermanint col; 172776baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman{ 172876baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman if (curcol < col) 172976baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman tprintf("%*s", col - curcol, ""); 173076baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman} 173176baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman 173276baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkermanvoid 173376baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkermanprinttrailer(tcp) 173476baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkermanstruct tcb *tcp; 173576baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman{ 173676baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman tprintf("\n"); 173776baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman tcp_last = NULL; 173876baf7c9f6dd61a15524ad43c1b690c252cf5b7Wichert Akkerman} 17399ce1a63eb20b069607c06f9645ac5a17b418a5f3Wichert Akkerman 1740ea78f0f77185f7d6d0b2055805139d96e1be816cWichert Akkerman#ifdef HAVE_MP_PROCFS 17419ce1a63eb20b069607c06f9645ac5a17b418a5f3Wichert Akkerman 17429ce1a63eb20b069607c06f9645ac5a17b418a5f3Wichert Akkermanint mp_ioctl (int fd, int cmd, void *arg, int size) { 17439ce1a63eb20b069607c06f9645ac5a17b418a5f3Wichert Akkerman 17449ce1a63eb20b069607c06f9645ac5a17b418a5f3Wichert Akkerman struct iovec iov[2]; 17459ce1a63eb20b069607c06f9645ac5a17b418a5f3Wichert Akkerman int n = 1; 17469ce1a63eb20b069607c06f9645ac5a17b418a5f3Wichert Akkerman 17479ce1a63eb20b069607c06f9645ac5a17b418a5f3Wichert Akkerman iov[0].iov_base = &cmd; 17489ce1a63eb20b069607c06f9645ac5a17b418a5f3Wichert Akkerman iov[0].iov_len = sizeof cmd; 17499ce1a63eb20b069607c06f9645ac5a17b418a5f3Wichert Akkerman if (arg) { 17509ce1a63eb20b069607c06f9645ac5a17b418a5f3Wichert Akkerman ++n; 17519ce1a63eb20b069607c06f9645ac5a17b418a5f3Wichert Akkerman iov[1].iov_base = arg; 17529ce1a63eb20b069607c06f9645ac5a17b418a5f3Wichert Akkerman iov[1].iov_len = size; 17539ce1a63eb20b069607c06f9645ac5a17b418a5f3Wichert Akkerman } 17549ce1a63eb20b069607c06f9645ac5a17b418a5f3Wichert Akkerman 17559ce1a63eb20b069607c06f9645ac5a17b418a5f3Wichert Akkerman return writev (fd, iov, n); 17569ce1a63eb20b069607c06f9645ac5a17b418a5f3Wichert Akkerman} 17579ce1a63eb20b069607c06f9645ac5a17b418a5f3Wichert Akkerman 17589ce1a63eb20b069607c06f9645ac5a17b418a5f3Wichert Akkerman#endif 1759