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[])
34 buffer = calloc(BUFSZ, 2);
37 /* We fork and torture parent. */
38 if (pipe(p2c) != 0 || pipe(c2p) != 0)
45 /* Child. Make sure parent ready, then write in two parts. */
46 if (read(p2c[0], &c, 1) != 1)
48 memset(buffer, 0xff, BUFSZ*2);
49 if (!write_all(c2p[1], buffer, BUFSZ))
51 if (kill(getppid(), SIGUSR1) != 0)
53 /* Make sure they get signal. */
54 if (read(p2c[0], &c, 1) != 1)
56 if (write(c2p[1], buffer, BUFSZ) != BUFSZ)
65 signal(SIGUSR1, got_signal);
66 ok1(write(p2c[1], &c, 1) == 1);
67 ok1(read_all(c2p[0], buffer, BUFSZ*2));
68 ok1(memchr(buffer, 0, BUFSZ*2) == NULL);
70 ok1(wait(&status) == child);
71 ok(WIFEXITED(status) && WEXITSTATUS(status) == 0,
72 "WIFEXITED(status) = %u, WEXITSTATUS(status) = %u",
73 WIFEXITED(status), WEXITSTATUS(status));