int main(void) { tprintf("%s", ""); int fds[2]; if (socketpair(AF_UNIX, SOCK_STREAM, 0, fds)) perror_msg_and_skip("socketpair"); assert(0 == fds[0]); assert(1 == fds[1]); static const char w0_c[] = "012"; const char *w0_d = hexdump_strdup(w0_c); void *w0 = tail_memdup(w0_c, LENGTH_OF(w0_c)); static const char w1_c[] = "34567"; const char *w1_d = hexdump_strdup(w1_c); void *w1 = tail_memdup(w1_c, LENGTH_OF(w1_c)); static const char w2_c[] = "89abcde"; const char *w2_d = hexdump_strdup(w2_c); void *w2 = tail_memdup(w2_c, LENGTH_OF(w2_c)); static const char r0_c[] = "01234567"; const char *r0_d = hexdump_strdup(r0_c); static const char r1_c[] = "89abcde"; const char *r1_d = hexdump_strdup(r1_c); const struct iovec w_iov_[] = { { .iov_base = w0, .iov_len = LENGTH_OF(w0_c) }, { .iov_base = w1,
int main(void) { tprintf("%s", ""); int fds[2]; if (pipe(fds)) perror_msg_and_fail("pipe"); assert(0 == fds[0]); assert(1 == fds[1]); static const char w0_c[] = "012"; const char *w0_d = hexdump_strdup(w0_c); void *w0 = tail_memdup(w0_c, LENGTH_OF(w0_c)); static const char w1_c[] = "34567"; const char *w1_d = hexdump_strdup(w1_c); void *w1 = tail_memdup(w1_c, LENGTH_OF(w1_c)); static const char w2_c[] = "89abcde"; const char *w2_d = hexdump_strdup(w2_c); void *w2 = tail_memdup(w2_c, LENGTH_OF(w2_c)); const struct iovec iov_[] = { { .iov_base = w0, .iov_len = LENGTH_OF(w0_c) }, { .iov_base = w1,
int main(void) { tprintf("%s", ""); static char tmp[] = "preadv-pwritev-tmpfile"; if (open(tmp, O_CREAT|O_RDONLY|O_TRUNC, 0600) != 0) perror_msg_and_fail("creat: %s", tmp); if (open(tmp, O_WRONLY) != 1) perror_msg_and_fail("open: %s", tmp); if (unlink(tmp)) perror_msg_and_fail("unlink: %s", tmp); static const char w0_c[] = "012"; const char *w0_d = hexdump_strdup(w0_c); void *w0 = tail_memdup(w0_c, LENGTH_OF(w0_c)); const void *efault = w0 + LENGTH_OF(w0_c); static const char w1_c[] = "34567"; const char *w1_d = hexdump_strdup(w1_c); void *w1 = tail_memdup(w1_c, LENGTH_OF(w1_c)); static const char w2_c[] = "89abcde"; const char *w2_d = hexdump_strdup(w2_c); void *w2 = tail_memdup(w2_c, LENGTH_OF(w2_c)); long rc; rc = pwritev(1, efault, 42, 0); tprintf("pwritev(1, %p, 42, 0) = %ld %s (%m)\n", efault, rc, errno2name()); rc = preadv(0, efault, 42, 0); tprintf("preadv(0, %p, 42, 0) = %ld %s (%m)\n", efault, rc, errno2name()); static const char r0_c[] = "01234567"; const char *r0_d = hexdump_strdup(r0_c); static const char r1_c[] = "89abcde"; const char *r1_d = hexdump_strdup(r1_c); const struct iovec w_iov_[] = { { .iov_base = w0, .iov_len = LENGTH_OF(w0_c) }, { .iov_base = w1,
int main(void) { tprintf("%s", ""); int fds[2]; if (pipe(fds)) perror_msg_and_fail("pipe"); assert(0 == fds[0]); assert(1 == fds[1]); static const char w0_c[] = "012"; const char *w0_d = hexdump_strdup(w0_c); void *w0 = tail_memdup(w0_c, LENGTH_OF(w0_c)); const void *efault = w0 + LENGTH_OF(w0_c); static const char w1_c[] = "34567"; const char *w1_d = hexdump_strdup(w1_c); void *w1 = tail_memdup(w1_c, LENGTH_OF(w1_c)); static const char w2_c[] = "89abcde"; const char *w2_d = hexdump_strdup(w2_c); void *w2 = tail_memdup(w2_c, LENGTH_OF(w2_c)); assert(writev(1, efault, 42) == -1); tprintf("writev(1, [%p], 42) = -1 EFAULT (%m)\n", efault); assert(readv(0, efault, 42) == -1); tprintf("readv(0, %p, 42) = -1 EFAULT (%m)\n", efault); static const char r0_c[] = "01234567"; const char *r0_d = hexdump_strdup(r0_c); static const char r1_c[] = "89abcde"; const char *r1_d = hexdump_strdup(r1_c); const struct iovec w_iov_[] = { { .iov_base = w0, .iov_len = LENGTH_OF(w0_c) }, { .iov_base = w1,
static void dumpio(void) { static char tmp[] = "preadv2-pwritev2-tmpfile"; if (open(tmp, O_CREAT|O_RDONLY|O_TRUNC, 0600) != 0) perror_msg_and_fail("creat: %s", tmp); if (open(tmp, O_WRONLY) != 1) perror_msg_and_fail("open: %s", tmp); if (unlink(tmp)) perror_msg_and_fail("unlink: %s", tmp); static const char w0_c[] = "012"; const char *w0_d = hexdump_strdup(w0_c); void *w0 = tail_memdup(w0_c, LENGTH_OF(w0_c)); static const char w1_c[] = "34567"; const char *w1_d = hexdump_strdup(w1_c); void *w1 = tail_memdup(w1_c, LENGTH_OF(w1_c)); static const char w2_c[] = "89abcde"; const char *w2_d = hexdump_strdup(w2_c); void *w2 = tail_memdup(w2_c, LENGTH_OF(w2_c)); long rc; static const char r0_c[] = "01234567"; const char *r0_d = hexdump_strdup(r0_c); static const char r1_c[] = "89abcde"; const char *r1_d = hexdump_strdup(r1_c); const struct iovec w_iov_[] = { { .iov_base = w0, .iov_len = LENGTH_OF(w0_c) }, { .iov_base = w1,