120 lines
3.1 KiB
C
120 lines
3.1 KiB
C
/*****************************************************************************
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*
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* $Id$
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* Purpose ...............: Pid utilities
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*
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*****************************************************************************
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* Copyright (C) 1997-2005
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*
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* Michiel Broek FIDO: 2:280/2802
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* Beekmansbos 10
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* 1971 BV IJmuiden
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* the Netherlands
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*
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* This file is part of MBSE BBS.
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*
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* This BBS is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the
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* Free Software Foundation; either version 2, or (at your option) any
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* later version.
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*
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* MBSE BBS is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with MBSE BBS; see the file COPYING. If not, write to the Free
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* Software Foundation, 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
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*****************************************************************************/
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#include "../config.h"
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#include "mbselib.h"
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/*
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* Find the program name for a given pid. The progname buffer
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* has te be allocated with size byte.
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*/
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int pid2prog(pid_t pid, char *progname, size_t size)
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{
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#if defined(__OpenBSD__)
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#define ARG_SIZE 60
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static char **s, buf[ARG_SIZE];
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size_t siz = 100;
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char **p;
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int mib[4];
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#elif defined(__NetBSD__)
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#define ARG_SIZE 60
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static char **s;
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size_t siz = 100;
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int mib[4];
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#else
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char temp[PATH_MAX];
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FILE *fp;
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#endif
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#if defined(__OpenBSD__)
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/*
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* Systems that use sysctl to get process information
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*/
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mib[0] = CTL_KERN;
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mib[1] = KERN_PROC_ARGS;
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mib[2] = pid;
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mib[3] = KERN_PROC_ARGV;
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if ((s = realloc(s, siz)) == NULL) {
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WriteError("pid2prog(): no memory");
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return -1;
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}
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if (sysctl(mib, 4, s, &siz, NULL, 0) == -1) {
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WriteError("$pid2prog() sysctl call failed");
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return -1;
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}
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buf[0] = '\0';
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for (p = s; *p != NULL; p++) {
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if (p != s)
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strlcat(buf, " ", sizeof(buf));
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strlcat(buf, *p, sizeof(buf));
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}
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strncpy(progname, buf, size);
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return 0;
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#elif defined(__NetBSD__)
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/*
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* Systems that use sysctl to get process information
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*/
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mib[0] = CTL_KERN;
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mib[1] = KERN_PROC_ARGS;
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mib[2] = pid;
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mib[3] = KERN_PROC_ARGV;
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if ((s = realloc(s, siz)) == NULL) {
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WriteError("pid2prog(): no memory");
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return -1;
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}
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if (sysctl(mib, 4, s, &siz, NULL, 0) == -1) {
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WriteError("$pid2prog() sysctl call failed");
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return -1;
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}
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// parent = xstrcpy((char *)s);
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strncpy(progname, (char *)s, size);
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return 0;
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#else
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/*
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* Systems with /proc filesystem like Linux, FreeBSD
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*/
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snprintf(temp, PATH_MAX, "/proc/%d/cmdline", pid);
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if ((fp = fopen(temp, "r")) == NULL) {
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WriteError("$Can't read %s", temp);
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return -1;
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}
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fgets(temp, PATH_MAX-1, fp);
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fclose(fp);
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strncpy(progname, temp, size);
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return 0;
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#endif
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}
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