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https://github.com/freebsd/freebsd-src.git
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e0491636b5
file so that we have a chance of using gcore on non-i386 platforms. Use linker sets to reduce the registration glue. Remove md-sparc.c, we do not have an a.out sparc32 port. aoutcore.c was repocopied from gcore.c.
181 lines
4.7 KiB
C
181 lines
4.7 KiB
C
/*-
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* Copyright (c) 1992, 1993
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* The Regents of the University of California. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Berkeley and its contributors.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#ifndef lint
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static const char copyright[] =
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"@(#) Copyright (c) 1992, 1993\n\
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The Regents of the University of California. All rights reserved.\n";
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#endif /* not lint */
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#if 0
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#ifndef lint
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static char sccsid[] = "@(#)gcore.c 8.2 (Berkeley) 9/23/93";
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#endif /* not lint */
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#endif
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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/*
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* Originally written by Eric Cooper in Fall 1981.
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* Inspired by a version 6 program by Len Levin, 1978.
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* Several pieces of code lifted from Bill Joy's 4BSD ps.
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* Most recently, hacked beyond recognition for 4.4BSD by Steven McCanne,
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* Lawrence Berkeley Laboratory.
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*
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* Portions of this software were developed by the Computer Systems
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* Engineering group at Lawrence Berkeley Laboratory under DARPA
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* contract BG 91-66 and contributed to Berkeley.
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*/
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#include <sys/param.h>
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#include <sys/time.h>
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#include <sys/stat.h>
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#include <sys/linker_set.h>
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#include <err.h>
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#include <fcntl.h>
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#include <signal.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <unistd.h>
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#include "extern.h"
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static void killed(int);
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static void restart_target(void);
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static void usage(void) __dead2;
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static pid_t pid;
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SET_DECLARE(dumpset, struct dumpers);
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int
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main(int argc, char *argv[])
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{
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int ch, cnt, efd, fd, sflag;
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char *binfile, *corefile;
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char fname[MAXPATHLEN];
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struct dumpers **d, *dumper;
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sflag = 0;
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corefile = NULL;
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while ((ch = getopt(argc, argv, "c:s")) != -1) {
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switch (ch) {
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case 'c':
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corefile = optarg;
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break;
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case 's':
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sflag = 1;
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break;
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default:
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usage();
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break;
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}
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}
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argv += optind;
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argc -= optind;
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/* XXX we should check that the pid argument is really a number */
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switch (argc) {
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case 1:
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pid = atoi(argv[0]);
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asprintf(&binfile, "/proc/%d/file", pid);
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if (binfile == NULL)
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errx(1, "allocation failure");
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break;
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case 2:
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pid = atoi(argv[1]);
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binfile = argv[0];
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break;
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default:
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usage();
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}
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efd = open(binfile, O_RDONLY, 0);
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if (efd < 0)
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err(1, "%s", binfile);
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dumper = NULL;
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SET_FOREACH(d, dumpset) {
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lseek(efd, 0, SEEK_SET);
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if (((*d)->ident)(efd, pid, binfile)) {
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dumper = (*d);
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lseek(efd, 0, SEEK_SET);
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break;
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}
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}
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if (dumper == NULL)
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errx(1, "Invalid executable file");
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if (corefile == NULL) {
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(void)snprintf(fname, sizeof(fname), "core.%d", pid);
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corefile = fname;
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}
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fd = open(corefile, O_RDWR|O_CREAT|O_TRUNC, DEFFILEMODE);
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if (fd < 0)
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err(1, "%s", corefile);
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if (sflag) {
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signal(SIGHUP, killed);
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signal(SIGINT, killed);
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signal(SIGTERM, killed);
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if (kill(pid, SIGSTOP) == -1)
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err(1, "%d: stop signal", pid);
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atexit(restart_target);
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}
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dumper->dump(efd, fd, pid);
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(void)close(fd);
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(void)close(efd);
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exit(0);
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}
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static void
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killed(int sig)
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{
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restart_target();
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signal(sig, SIG_DFL);
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kill(getpid(), sig);
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}
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static void
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restart_target(void)
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{
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kill(pid, SIGCONT);
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}
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void
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usage(void)
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{
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(void)fprintf(stderr, "usage: gcore [-s] [-c core] [executable] pid\n");
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exit(1);
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}
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