1 /* FIXME: Do something tricky to ensure we really do loop in read_all. */
3 #include <ccan/read_write_all/read_write_all.h>
4 #include <ccan/read_write_all/read_write_all.c>
5 #include <ccan/tap/tap.h>
15 static volatile int sigcount;
16 static int p2c[2], c2p[2];
17 static void got_signal(int sig)
20 if (write(p2c[1], &c, 1) == 1)
24 /* < PIPE_BUF *will* be atomic. But > PIPE_BUF only *might* be non-atomic. */
25 #define BUFSZ (1024*1024)
27 int main(int argc, char *argv[])
29 char buffer[BUFSZ*2] = { 0 };
36 /* We fork and torture parent. */
37 if (pipe(p2c) != 0 || pipe(c2p) != 0)
44 /* Child. Make sure parent ready, then write in two parts. */
45 if (read(p2c[0], &c, 1) != 1)
47 memset(buffer, 0xff, sizeof(buffer));
48 if (!write_all(c2p[1], buffer, BUFSZ))
50 if (kill(getppid(), SIGUSR1) != 0)
52 /* Make sure they get signal. */
53 if (read(p2c[0], &c, 1) != 1)
55 if (write(c2p[1], buffer, BUFSZ) != BUFSZ)
64 signal(SIGUSR1, got_signal);
65 ok1(write(p2c[1], &c, 1) == 1);
66 ok1(read_all(c2p[0], buffer, sizeof(buffer)));
67 ok1(memchr(buffer, 0, sizeof(buffer)) == NULL);
69 ok1(wait(&status) == child);
70 ok(WIFEXITED(status) && WEXITSTATUS(status) == 0,
71 "WIFEXITED(status) = %u, WEXITSTATUS(status) = %u",
72 WIFEXITED(status), WEXITSTATUS(status));