libratbox/src/unix.c

   1 /*
   2  *  ircd-ratbox: A slightly useful ircd.
   3  *  unix.c: various unix type functions
   4  *
   5  *  Copyright (C) 1990 Jarkko Oikarinen and University of Oulu, Co Center
   6  *  Copyright (C) 2005 ircd-ratbox development team
   7  *  Copyright (C) 2005 Aaron Sethman <androsyn@ratbox.org>
   8  *
   9  *  This program is free software; you can redistribute it and/or modify
  10  *  it under the terms of the GNU General Public License as published by
  11  *  the Free Software Foundation; either version 2 of the License, or
  12  *  (at your option) any later version.
  13  *
  14  *  This program is distributed in the hope that it will be useful,
  15  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  16  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17  *  GNU General Public License for more details.
  18  *
  19  *  You should have received a copy of the GNU General Public License
  20  *  along with this program; if not, write to the Free Software
  21  *  Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301
  22  *  USA
  23  *
  24  *  $Id: unix.c 25038 2008-01-23 16:03:08Z androsyn $
  25  */
  26 #include <libratbox_config.h>
  27 #include <ratbox_lib.h>
  28
  29 #ifndef WINDOWS
  30 #if defined(HAVE_SPAWN_H) && defined(HAVE_POSIX_SPAWN)
  31 #include <spawn.h>
  32 extern char **environ;
  33 pid_t
  34 rb_spawn_process(const char *path, const char **argv)
  35 {
  36         pid_t pid;
  37         const void *arghack = argv;
  38         posix_spawnattr_t spattr;
  39         posix_spawnattr_init(&spattr);
  40 #ifdef POSIX_SPAWN_USEVFORK
  41         posix_spawnattr_setflags(&spattr, POSIX_SPAWN_USEVFORK);
  42 #endif
  43         if(posix_spawn(&pid, path, NULL, &spattr, arghack, environ))
  44         {
  45                 return -1;
  46         }
  47         return pid;
  48 }
  49 #else
  50 pid_t
  51 rb_spawn_process(const char *path, const char **argv)
  52 {
  53         pid_t pid;
  54         if(!(pid = vfork()))
  55         {
  56                 execv(path, (const void *)argv); /* make gcc shut up */
  57                 _exit(1); /* if we're still here, we're screwed */
  58         }
  59         return(pid);
  60 }
  61 #endif
  62
  63 #ifndef HAVE_GETTIMEOFDAY
  64 int
  65 rb_gettimeofday(struct timeval *tv, void *tz)
  66 {
  67         if(tv == NULL)
  68         {
  69                 errno = EFAULT;
  70                 return -1;
  71         }
  72         tv->tv_usec = 0;
  73         if(time(&tv->tv_sec) == -1)
  74                 return -1;
  75         return 0;
  76 }
  77 #else
  78 int
  79 rb_gettimeofday(struct timeval *tv, void *tz)
  80 {
  81         return(gettimeofday(tv, tz));
  82 }
  83 #endif
  84
  85 void
  86 rb_sleep(unsigned int seconds, unsigned int useconds)
  87 {
  88 #ifdef HAVE_NANOSLEEP
  89         struct timespec tv;
  90         tv.tv_nsec = (useconds * 1000);
  91         tv.tv_sec = seconds;
  92         nanosleep(&tv, NULL);
  93 #else
  94         struct timeval tv;
  95         tv.tv_sec = seconds;
  96         tv.tv_usec = useconds;
  97         select(0, NULL, NULL, NULL, &tv);
  98 #endif
  99 }
 100 #endif /* !WINDOWS */
 101
 102