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/*
* Copyright (C) 2025 Jakub Kruszona-Zawadzki, Saglabs SA
*
* This file is part of MooseFS.
*
* MooseFS is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, version 2 (only).
*
* MooseFS is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with MooseFS; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02111-1301, USA
* or visit http://www.gnu.org/licenses/gpl-2.0.html
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <unistd.h>
#include <stdlib.h>
#include <string.h>
#include <inttypes.h>
static char *argv_start;
static uint32_t argv_leng;
void processname_init(int argc,char *argv[]) {
extern char **environ;
char **argp;
char *lastpos;
int i,j;
argv_start = NULL;
argv_leng = 0;
if (argc==0 || argv[0]==NULL) { // ???
return;
}
// copy environment
argp = environ;
for (i=0 ; argp[i]!=NULL ; i++) {}
environ = malloc((i+1) * sizeof(char*));
if (environ==NULL) {
environ = argp;
return;
}
for (i=0 ; argp[i]!=NULL ; i++) {
environ[i] = strdup(argp[i]);
if (environ[i]==NULL) { // strdup failed ?
for (j=0 ; j<i ; j++) {
free(environ[i]);
}
free(environ);
environ = argp;
return;
}
}
environ[i] = NULL;
lastpos = NULL;
for (i=0 ; i<argc ; i++) {
if (lastpos==NULL || lastpos+1==argv[i]) {
lastpos = argv[i] + strlen(argv[i]);
}
}
for (i=0 ; argp[i]!=NULL ; i++) {
if (lastpos+1==argp[i]) {
lastpos = argp[i] + strlen(argp[i]);
}
}
argv_start = argv[0];
argv_leng = (lastpos - argv_start) - 1;
}
void processname_set(char *name) {
#ifdef HAVE_SETPROCTITLE
setproctitle("%s",name);
#else
uint32_t l;
if (argv_leng>0) {
l = strlen(name);
if (l>=argv_leng) {
l = argv_leng-1;
}
if (l>0) {
memcpy(argv_start,name,l);
}
// if (l<argv_leng) { // always true - so ignore this condition
memset(argv_start+l,0,argv_leng-l);
// }
}
#endif
}
#if 0
int main(int argc,char *argv[]) {
processname_init(argc,argv);
processname_set("Process with very funny name shown in ps");
sleep(10);
return 0;
}
#endif
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