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#include <stdlib.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#ifndef S_SPLINT_S
#include <unistd.h>
#endif /* S_SPLINT_S */
#include "gpsd_config.h"
#ifndef HAVE_DAEMON
#if defined (HAVE_PATH_H)
#include <paths.h>
#else
#if !defined (_PATH_DEVNULL)
#define _PATH_DEVNULL "/dev/null"
#endif
#endif
int daemon(int nochdir, int noclose)
/* compatible with the daemon(3) found on Linuxes and BSDs */
{
int fd;
/*@ -type @*//* weirdly, splint 3.1.2 is confused by fork() */
switch (fork()) {
case -1:
return -1;
case 0: /* child side */
break;
default: /* parent side */
exit(0);
}
/*@ +type @*/
if (setsid() == -1)
return -1;
if ((nochdir==0) && (chdir("/") == -1))
return -1;
/*@ -nullpass @*/
if ((noclose==0) && (fd = open(_PATH_DEVNULL, O_RDWR, 0)) != -1) {
(void)dup2(fd, STDIN_FILENO);
(void)dup2(fd, STDOUT_FILENO);
(void)dup2(fd, STDERR_FILENO);
if (fd > 2)
(void)close(fd);
}
/*@ +nullpass @*/
return 0;
}
#endif /* HAVE_DAEMON */
// end
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