xv6-cs450/user1.c

21 lines
257 B
C
Raw Normal View History

2006-06-27 16:35:53 +02:00
char buf[32];
2006-06-26 17:11:19 +02:00
2006-06-22 22:47:23 +02:00
main()
{
2006-06-27 16:35:53 +02:00
int pid, fds[2], n;
pipe(fds);
pid = fork();
2006-06-27 16:35:53 +02:00
if(pid > 0){
write(fds[1], "xyz", 4);
puts("w");
} else {
2006-06-27 16:35:53 +02:00
n = read(fds[0], buf, sizeof(buf));
puts("r: ");
puts(buf);
puts("\n");
}
2006-06-22 22:47:23 +02:00
while(1)
;
}