ladish/daemon/proctitle.c

/* -*- Mode: C -*- */
/*
 *   LASH
 *
 *   Copyright (C) 2008 Nedko Arnaudov <nedko@arnaudov.name>
 *
 *   This program 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; either version 2 of the License, or
 *   (at your option) any later version.
 *
 *   This program 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 this program; if not, write to the Free Software
 *   Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
 */

/* This implementation should work on Linux, on FreeBSD we could use setprotitile(3) */

#include <stdarg.h>
#include <string.h>

#include "../common/debug.h"

static char * g_argv_begin;
static char * g_argv_end;

void
lash_init_setproctitle(
  int argc,
  char ** argv,
  char ** envp)
{
  char * last_arg;

  g_argv_begin = argv[0];

  last_arg = argv[argc-1];

  g_argv_end = last_arg + strlen(last_arg);

  //lash_info("%u chars available for title", g_argv_end - g_argv_begin);
}

void
lash_setproctitile(
  const char * format,
  ...)
{
  va_list ap;

  va_start(ap, format);

  memset(g_argv_begin, 0, g_argv_end - g_argv_begin);

  vsnprintf(g_argv_begin, g_argv_end - g_argv_begin, format, ap);

  va_end(ap);
}