7 const char test_name[] = "syn-rw";
16 pid_t children[CHILD_CNT];
21 check (create (filename, 0), "create \"%s\"", filename);
22 check ((fd = open (filename)) > 1, "open \"%s\"", filename);
24 for (i = 0; i < CHILD_CNT; i++)
27 snprintf (cmd_line, sizeof cmd_line, "child-syn-rw %d", i);
28 check ((children[i] = exec (cmd_line)) != PID_ERROR,
29 "exec child %d of %d: \"%s\"", i + 1, (int) CHILD_CNT, cmd_line);
32 random_bytes (buf, sizeof buf);
34 for (ofs = 0; ofs < BUF_SIZE; ofs += CHUNK_SIZE)
35 check (write (fd, buf + ofs, CHUNK_SIZE) > 0,
36 "write %d bytes at offset %zu in \"%s\"",
37 (int) CHUNK_SIZE, ofs, filename);
40 for (i = 0; i < CHILD_CNT; i++)
42 int status = join (children[i]);
43 check (status == i, "join child %d of %d", i + 1, (int) CHILD_CNT);