def main():
if open_("console", O_RDWR) < 0:
mknod("console", 1, 1)
open_("console", O_RDWR)
dup(0) # stdout
dup(0) # stderr
while True:
printf(1, "init: starting sh\n")
pid = fork()
if pid < 0:
printf(1, "init: fork failed\n")
exit()
if pid == 0:
exec_("sh", argv)
printf(1, "init: exec sh failed\n")
exit()
while True:
wpid = wait()
if wpid < 0 or wpid == pid:
break
print(1, "zombie!\n")
def forktest():
printf(1, "fork test\n")
for n in range(1000):
pid = fork()
if pid < 0:
break
if pid == 0:
exit_()
if n == 1000:
printf(1, "fork claimed to work 1000 times!\n")
exit_()
while n > 0:
if wait() < 0:
printf(1, "wait stopped early\n")
exit_(1)
n -= 1
if wait() != -1:
printf(1, "wait got too many\n")
exit_(1)
printf(1, "fork test OK\n")
def main(argc, argv):
if fork() > 0:
sleep(5) # Let child exit before parent
exit_()
def fork1(func, *argv):
pid = fork(func, *argv)
if pid == -1:
panic("fork")
return pid