fa49dc9cf0
You can get ps easily to core dump, if you are running a "make depend" on a kernel in one window and a "ps -auxww" in another. The ww will try to give you the full argument list of the command that can now be 64Kb large, but ps expected only 4Kb large arg arrays and doesn't check for overflows.
119 lines
3.3 KiB
C
119 lines
3.3 KiB
C
/*-
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* Copyright (c) 1992, 1993, 1994
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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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* $Id: fmt.c,v 1.3 1994/09/24 02:56:43 davidg Exp $
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*/
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#ifndef lint
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static char sccsid[] = "@(#)fmt.c 8.4 (Berkeley) 4/15/94";
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#endif /* not lint */
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#include <sys/param.h>
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#include <sys/syslimits.h>
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#include <sys/time.h>
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#include <sys/resource.h>
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#include <ctype.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 <vis.h>
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#include "ps.h"
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static char *cmdpart __P((char *));
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static char *shquote __P((char **));
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/*
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* XXX
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* This is a stub until marc does the real one.
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*/
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static char *
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shquote(argv)
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char **argv;
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{
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char **p, *dst, *src;
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static char buf[ARG_MAX]; /* XXX */
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if (*argv == 0) {
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buf[0] = 0;
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return (buf);
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}
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dst = buf;
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for (p = argv; (src = *p++) != 0; ) {
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if (*src == 0)
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continue;
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strvis(dst, src, VIS_NL | VIS_CSTYLE);
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while (*dst)
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dst++;
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*dst++ = ' ';
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}
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*dst = '\0';
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return (buf);
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}
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static char *
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cmdpart(arg0)
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char *arg0;
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{
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char *cp;
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return ((cp = strrchr(arg0, '/')) != NULL ? cp + 1 : arg0);
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}
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char *
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fmt_argv(argv, cmd, maxlen)
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char **argv;
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char *cmd;
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int maxlen;
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{
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int len;
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char *ap, *cp;
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if (argv == 0 || argv[0] == 0) {
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if (cmd == NULL)
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return ("");
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ap = NULL;
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len = maxlen + 3;
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} else {
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ap = shquote(argv);
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len = strlen(ap) + maxlen + 4;
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}
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if ((cp = malloc(len)) == NULL)
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return (NULL);
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if (ap == NULL)
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sprintf(cp, "(%.*s)", maxlen, cmd);
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else if (strncmp(cmdpart(argv[0]), cmd, maxlen) != 0)
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sprintf(cp, "%s(%.*s)", ap, maxlen, cmd);
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else
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(void) strcpy(cp, ap);
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return (cp);
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}
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