int main(int argc, char *argv[]) {
_cleanup_free_ char *bus_name = NULL, *address = NULL;
uint8_t *p;
sd_bus *a, *b;
int r, bus_ref;
sd_bus_message *m;
sd_memfd *f;
uint64_t sz;
uint32_t u32;
size_t i, l;
char *s;
log_set_max_level(LOG_DEBUG);
bus_ref = bus_kernel_create("deine-mutter", &bus_name);
if (bus_ref == -ENOENT)
return EXIT_TEST_SKIP;
assert_se(bus_ref >= 0);
address = strappend("kernel:path=", bus_name);
assert_se(address);
r = sd_bus_new(&a);
assert_se(r >= 0);
r = sd_bus_new(&b);
assert_se(r >= 0);
r = sd_bus_set_address(a, address);
assert_se(r >= 0);
r = sd_bus_set_address(b, address);
assert_se(r >= 0);
r = sd_bus_start(a);
assert_se(r >= 0);
r = sd_bus_start(b);
assert_se(r >= 0);
r = sd_bus_message_new_method_call(b, ":1.1", "/a/path", "an.inter.face", "AMethod", &m);
assert_se(r >= 0);
r = sd_bus_message_open_container(m, 'r', "aysay");
assert_se(r >= 0);
r = sd_bus_message_append_array_space(m, 'y', FIRST_ARRAY, (void**) &p);
assert_se(r >= 0);
memset(p, 'L', FIRST_ARRAY);
r = sd_memfd_new_and_map(&f, STRING_SIZE, (void**) &s);
assert_se(r >= 0);
for (i = 0; i < STRING_SIZE-1; i++)
s[i] = '0' + (i % 10);
s[STRING_SIZE-1] = 0;
munmap(s, STRING_SIZE);
r = sd_memfd_get_size(f, &sz);
assert_se(r >= 0);
assert_se(sz == STRING_SIZE);
r = sd_bus_message_append_string_memfd(m, f);
assert_se(r >= 0);
sd_memfd_free(f);
r = sd_memfd_new_and_map(&f, SECOND_ARRAY, (void**) &p);
assert_se(r >= 0);
memset(p, 'P', SECOND_ARRAY);
munmap(p, SECOND_ARRAY);
r = sd_memfd_get_size(f, &sz);
assert_se(r >= 0);
assert_se(sz == SECOND_ARRAY);
r = sd_bus_message_append_array_memfd(m, 'y', f);
assert_se(r >= 0);
sd_memfd_free(f);
r = sd_bus_message_close_container(m);
assert_se(r >= 0);
r = sd_bus_message_append(m, "u", 4711);
assert_se(r >= 0);
r = bus_message_seal(m, 55);
assert_se(r >= 0);
bus_message_dump(m, stdout, true);
r = sd_bus_send(b, m, NULL);
assert_se(r >= 0);
sd_bus_message_unref(m);
r = sd_bus_process(a, &m);
assert_se(r > 0);
bus_message_dump(m, stdout, true);
sd_bus_message_rewind(m, true);
r = sd_bus_message_enter_container(m, 'r', "aysay");
assert_se(r > 0);
r = sd_bus_message_read_array(m, 'y', (const void**) &p, &l);
assert_se(r > 0);
assert_se(l == FIRST_ARRAY);
for (i = 0; i < l; i++)
assert_se(p[i] == 'L');
r = sd_bus_message_read(m, "s", &s);
assert_se(r > 0);
for (i = 0; i < STRING_SIZE-1; i++)
assert_se(s[i] == (char) ('0' + (i % 10)));
assert_se(s[STRING_SIZE-1] == 0);
r = sd_bus_message_read_array(m, 'y', (const void**) &p, &l);
assert_se(r > 0);
assert_se(l == SECOND_ARRAY);
for (i = 0; i < l; i++)
assert_se(p[i] == 'P');
r = sd_bus_message_exit_container(m);
assert_se(r > 0);
r = sd_bus_message_read(m, "u", &u32);
assert_se(r > 0);
assert_se(u32 == 4711);
sd_bus_message_unref(m);
sd_bus_unref(a);
sd_bus_unref(b);
return 0;
}
int main(int argc, char *argv[]) {
sd_memfd *m;
char *s, *name;
uint64_t sz;
int r, fd;
FILE *f;
char buf[3] = {};
struct iovec iov[3] = {};
char bufv[3][3] = {};
log_set_max_level(LOG_DEBUG);
r = sd_memfd_new(NULL, &m);
if (r == -ENOENT)
return EXIT_TEST_SKIP;
assert_se(r >= 0);
assert_se(sd_memfd_get_name(m, &name) >= 0);
log_info("name: %s", name);
free(name);
r = sd_memfd_map(m, 0, 12, (void**) &s);
assert_se(r >= 0);
strcpy(s, "----- world");
r = sd_memfd_set_sealed(m, 1);
assert_se(r == -ETXTBSY);
assert_se(write(sd_memfd_get_fd(m), "he", 2) == 2);
assert_se(write(sd_memfd_get_fd(m), "XXX", 3) == 3);
assert_se(streq(s, "heXXX world"));
/* fix "hello" */
assert_se(lseek(sd_memfd_get_fd(m), 2, SEEK_SET) == 2);
assert_se(write(sd_memfd_get_fd(m), "ll", 2) == 2);
assert_se(sd_memfd_get_file(m, &f) >= 0);
fputc('o', f);
fflush(f);
/* check content */
assert_se(streq(s, "hello world"));
assert_se(munmap(s, 12) == 0);
r = sd_memfd_get_sealed(m);
assert_se(r == 0);
r = sd_memfd_get_size(m, &sz);
assert_se(r >= 0);
assert_se(sz = page_size());
/* truncate it */
r = sd_memfd_set_size(m, 6);
assert_se(r >= 0);
/* get back new value */
r = sd_memfd_get_size(m, &sz);
assert_se(r >= 0);
assert_se(sz == 6);
r = sd_memfd_set_sealed(m, 1);
assert_se(r >= 0);
r = sd_memfd_get_sealed(m);
assert_se(r == 1);
fd = sd_memfd_dup_fd(m);
assert_se(fd >= 0);
sd_memfd_free(m);
/* new sd_memfd, same underlying memfd */
r = sd_memfd_make(fd, &m);
assert_se(r >= 0);
/* we did truncate it to 6 */
r = sd_memfd_get_size(m, &sz);
assert_se(r >= 0 && sz == 6);
/* map it, check content */
r = sd_memfd_map(m, 0, 12, (void **)&s);
assert_se(r >= 0);
/* we only see the truncated size */
assert_se(streq(s, "hello "));
/* it was already sealed */
r = sd_memfd_set_sealed(m, 1);
assert_se(r == -EALREADY);
/* we cannot break the seal, it is mapped */
r = sd_memfd_set_sealed(m, 0);
assert_se(r == -ETXTBSY);
/* unmap it; become the single owner */
assert_se(munmap(s, 12) == 0);
/* now we can do flip the sealing */
r = sd_memfd_set_sealed(m, 0);
assert_se(r == 0);
r = sd_memfd_get_sealed(m);
assert_se(r == 0);
r = sd_memfd_set_sealed(m, 1);
assert_se(r == 0);
r = sd_memfd_get_sealed(m);
assert_se(r == 1);
r = sd_memfd_set_sealed(m, 0);
assert_se(r == 0);
r = sd_memfd_get_sealed(m);
assert_se(r == 0);
/* seek at 2, read() 2 bytes */
assert_se(lseek(fd, 2, SEEK_SET) == 2);
assert_se(read(fd, buf, 2) == 2);
/* check content */
assert_se(memcmp(buf, "ll", 2) == 0);
/* writev it out*/
iov[0].iov_base = (char *)"ABC";
iov[0].iov_len = 3;
iov[1].iov_base = (char *)"DEF";
iov[1].iov_len = 3;
iov[2].iov_base = (char *)"GHI";
iov[2].iov_len = 3;
assert_se(pwritev(fd, iov, 3, 0) == 9);
/* readv it back */
iov[0].iov_base = bufv[0];
iov[0].iov_len = 3;
iov[1].iov_base = bufv[1];
iov[1].iov_len = 3;
iov[2].iov_base = bufv[2];
iov[2].iov_len = 3;
assert_se(preadv(fd, iov, 3, 0) == 9);
/* check content */
assert_se(memcmp(bufv[0], "ABC", 3) == 0);
assert_se(memcmp(bufv[1], "DEF", 3) == 0);
assert_se(memcmp(bufv[2], "GHI", 3) == 0);
sd_memfd_free(m);
return 0;
}
