Zivjo!
On Mon, 29 Jan 2001, [EMAIL PROTECTED] wrote:
> Samo fork() tako kot zgoraj ni dovolj. Najprej enkrat forkas stran,
Tole sem uporabljal za nek daemon.
void daemon() {
int rc,fd,i;
rc=fork();
if (-1==rc) {
syslog(LOG_ERR,"Daemon() - Unable to fork()\n");
exit(-1);
}
if (rc>0) exit(0); //parent should exit and return control, it's OK.
rc=setsid();
if (-1==rc) {
syslog(LOG_ERR,"Daemon() - Unable to setsid()\n");
exit(-1);
}
rc=fork();
if (-1==rc) {
syslog(LOG_ERR,"Daemon() - Unable to fork()\n");
exit(-1);
}
if (rc>0) exit(0); //parent should exit and return control, it's OK.
rc=chdir(global.pchDataDir);
if (-1==rc) {
syslog(LOG_ERR,"Daemon() - Unable to chdir()\n");
exit(-1);
}
umask(0);
for (i=0;i<3;i++) close(i); // playing safe :).
// reopen stdin, out and err with /dev/null.
fd=open("/dev/null",O_RDWR);
if(-1==fd) {
syslog(LOG_ERR,"Daemon() - Unable to open \"/dev/null\"\n");
exit(-1);
}
for (i=0;i<3;i++)
if(-1==dup2(fd,i)){
syslog(LOG_ERR,"Daemon() - Unable to dup2(%d)\n",i);
exit(-1);
}
close(fd);
return; // a grandchild returns... free as a bird.. ;*)
}
--
best regards,
Rok Papez.
