void doit() {
if (efork() == 0) {
efork();
printf("hello\n");
exit(0);
}
return;
}
int main() {
if (efork() == 0)
atexit(end);
if (efork() == 0) {
printf("0");
fflush(stdout);
}
else
printf("1");
fflush(stdout);
exit(0);
}
int
_schedexec(Execargs *e)
{
int pid;
switch(pid = rfork(RFREND|RFNOTEG|RFFDG|RFMEM|RFPROC)){
case 0:
efork(e);
default:
return pid;
}
}
void eval(char *cmdline) {
char buf[MAXLINE];
char *argv[MAXARGS];
int bg, b;
pid_t pid;
strcpy(buf, cmdline);
bg = parseline(buf, argv);
if (argv[0] == NULL)
return;
if (b = builtin_cmd(argv))
return;
else {
child_block();
if ((pid = efork()) == 0) {
signal(SIGINT, SIG_DFL);
signal(SIGTSTP, SIG_DFL);
signal(SIGCHLD, SIG_DFL);
signal(SIGALRM, SIG_DFL);
child_unblock();
if (execve(argv[0], argv, environ) < 0) {
printf("%s : Command not found.\n",
argv[0]);
exit(0);
}
}
addjob(pid, cmdline);
setpgid(pid, pid);
if (bg) {
bg_job_info(pid);
child_unblock();
return;
}
if (!bg) {
forepid = pid;
child_unblock();
fg_waitpid(pid);
return;
}
child_unblock();
}
return;
}
/* forkexec -- fork (if necessary) and exec */
extern List *forkexec(char *file, List *list, Boolean inchild) {
int pid, status;
Vector *env;
gcdisable();
env = mkenv();
pid = efork(!inchild, FALSE);
if (pid == 0) {
execve(file, vectorize(list)->vector, env->vector);
failexec(file, list);
}
gcenable();
status = ewaitfor(pid);
if ((status & 0xff) == 0) {
sigint_newline = FALSE;
SIGCHK();
sigint_newline = TRUE;
} else
SIGCHK();
printstatus(0, status);
return mklist(mkterm(mkstatus(status), NULL), NULL);
}
