NetBSD/usr.bin/gcore/gcore.c

104 lines
3.2 KiB
C

/* $NetBSD: gcore.c,v 1.8 2005/01/09 17:47:45 christos Exp $ */
/*-
* Copyright (c) 2003 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Christos Zoulas.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the NetBSD
* Foundation, Inc. and its contributors.
* 4. Neither the name of The NetBSD Foundation nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
#include <sys/cdefs.h>
__RCSID("$NetBSD: gcore.c,v 1.8 2005/01/09 17:47:45 christos Exp $");
#include <sys/types.h>
#include <sys/param.h>
#include <sys/time.h>
#include <sys/ptrace.h>
#include <sys/proc.h>
#include <stdio.h>
#include <string.h>
#include <err.h>
#include <limits.h>
#include <stdlib.h>
#include <unistd.h>
#include <errno.h>
static void usage(void) __attribute__((__noreturn__));
static void
usage(void)
{
(void)fprintf(stderr, "Usage: %s [-c <corename>] <pid> [<pid> ...]\n",
getprogname());
exit(1);
}
int
main(int argc, char **argv)
{
int c;
char *corename = NULL;
int corelen = 0;
while ((c = getopt(argc, argv, "c:")) != -1)
switch (c) {
case 'c':
corename = optarg;
corelen = strlen(corename);
break;
case '?':
default:
usage();
/*NOTREACHED*/
}
if (optind == argc)
usage();
for (c = optind; c < argc; c++) {
char *ep;
long lval;
errno = 0;
lval = strtol(argv[c], &ep, 0);
if (argv[c] == '\0' || *ep)
errx(1, "`%s' is not a number.", argv[c]);
if (errno == ERANGE && (lval == LONG_MAX || lval == LONG_MIN))
err(1, "Pid `%s'", argv[c]);
if (ptrace(PT_DUMPCORE, (pid_t)lval, corename, corelen) == -1)
err(1, "ptrace(PT_DUMPCORE) failed");
}
return 0;
}