TEST_F(SocketTaggingTest, TagData) {
max_uint_tag = 0xffffffff00000000llu;
char *max_tags_str;
testPrintI("setup tag limit");
asprintf(&max_tags_str, "%d", max_tags);
ASSERT_GE(writeModuleParam("max_sock_tags", max_tags_str), 0) << "Failed to setup tag limit";
testPrintI("tag quota reach limit");
for (int cnt = 0; cnt < max_tags; cnt++ ) {
uint64_t tag = valid_tag2 + ((uint64_t)cnt << 32);
EXPECT_GE(doCtrlCommand("t %d %" PRIu64 " %u", sock0.fd, tag , fake_uid2), 0)
<< "Tagging within limit failed";
EXPECT_TRUE(sock0.checkTag(tag, fake_uid2))<< "Unexpected results: tag not found";
}
testPrintI("tag quota go over limit");
uint64_t new_tag = valid_tag2 + ((uint64_t)max_tags << 32);
EXPECT_LT(doCtrlCommand("t %d %" PRIu64 " %u", sock0.fd, new_tag, fake_uid2), 0);
EXPECT_TRUE(sock0.checkTag(valid_tag2 + (((uint64_t)max_tags - 1) << 32),
fake_uid2)) << "Unexpected results: tag not found";
testPrintI("valid untag");
EXPECT_GE(doCtrlCommand("u %d", sock0.fd), 0);
EXPECT_FALSE(sock0.checkTag(valid_tag2 + (((uint64_t)max_tags - 1) << 32), fake_uid2))
<< "Untagged tag should not be there";
testPrintI("tag after untag should not free up max tags");
uint64_t new_tag2 = valid_tag2 + ((uint64_t)max_tags << 32);
EXPECT_LT(doCtrlCommand("t %d %" PRIu64 " %u", sock0.fd, new_tag2 , fake_uid2), 0);
EXPECT_FALSE(sock0.checkTag(valid_tag2 + ((uint64_t)max_tags << 32), fake_uid2))
<< "Tag should not be there";
testPrintI("delete one tag");
uint64_t new_tag3 = valid_tag2 + (((uint64_t)max_tags / 2) << 32);
EXPECT_GE(doCtrlCommand("d %" PRIu64 " %u", new_tag3, fake_uid2), 0);
testPrintI("2 tags after 1 delete pass/fail");
uint64_t new_tag4;
new_tag4 = valid_tag2 + (((uint64_t)max_tags + 1 ) << 32);
EXPECT_GE(doCtrlCommand("t %d %" PRIu64 " %u", sock0.fd, new_tag4 , fake_uid2), 0);
EXPECT_TRUE(sock0.checkTag(valid_tag2 + (((uint64_t)max_tags + 1) << 32), fake_uid2))
<< "Tag not found";
new_tag4 = valid_tag2 + (((uint64_t)max_tags + 2 ) << 32);
EXPECT_LT(doCtrlCommand("t %d %" PRIu64 " %u", sock0.fd, new_tag4 , fake_uid2), 0);
EXPECT_FALSE(sock0.checkTag(valid_tag2 + (((uint64_t)max_tags + 2) << 32), fake_uid2))
<< "Tag should not be there";
/* TODO(jpa): test tagging two different sockets with same tags and
* check refcounts the tag_node should be +2
*/
}
int testTagData(void) {
SockInfo sock0;
SockInfo sock1;
int res;
int total_errors = 0;
int ctrl_fd = -1;
int dev_fd = -1;
const uint64_t invalid_tag1 = 0x0000000100000001llu;
uint64_t valid_tag1;
uint64_t valid_tag2;
uint64_t max_uint_tag = 0xffffffff00000000llu;
uid_t fake_uid;
uid_t fake_uid2;
const char *test_name;
uid_t my_uid = getuid();
pid_t my_pid = getpid();
const int max_tags = 5;
srand48(my_pid * my_uid);
/* Adjust fake UIDs and tags so that multiple instances can run in parallel. */
fake_uid = testRand();
fake_uid2 = testRand();
valid_tag1 = ((uint64_t)my_pid << 48) | ((uint64_t)testRand() << 32);
valid_tag2 = ((uint64_t)my_pid << 48) | ((uint64_t)testRand() << 32);
valid_tag2 &= 0xffffff00ffffffffllu; // Leave some room to make counts visible.
testSetLogCatTag(LOG_TAG);
testPrintI("** %s ** ============================", __FUNCTION__);
testPrintI("* start: pid=%lu uid=%lu uid1=0x%lx/%lu uid2=0x%lx/%lu"
" tag1=0x%llx/%llu tag2=0x%llx/%llu",
my_pid, my_uid, fake_uid, fake_uid, fake_uid2, fake_uid2,
valid_tag1, valid_tag1, valid_tag2, valid_tag2);
// ---------------
test_name = "kernel has qtaguid";
testPrintI("* test: %s ", test_name);
ctrl_fd = openCtrl();
if (ctrl_fd < 0) {
testPrintE("qtaguid ctrl open failed: %s", strerror(errno));
return 1;
}
close(ctrl_fd);
dev_fd = open("/dev/xt_qtaguid", O_RDONLY);
if (dev_fd < 0) {
testPrintE("! %s: qtaguid dev open failed: %s", test_name, strerror(errno));
total_errors++;
}
// ---------------
test_name = "delete command doesn't fail";
testPrintI("* test: %s", test_name);
res = doCtrlCommand("d 0 %u", fake_uid);
if (res < 0) {
testPrintE("! %s: Unexpected results", test_name);
total_errors++;
}
res = doCtrlCommand("d 0 %u", fake_uid2);
if (res < 0) {
testPrintE("! %s: Unexpected results", test_name);
total_errors++;
}
res = doCtrlCommand("d 0 %u", my_uid);
if (res < 0) {
testPrintE("! %s: Unexpected results", test_name);
total_errors++;
}
// ---------------
test_name = "setup sock0 and addr via tag";
testPrintI("* test: %s", test_name);
if (sock0.setup(valid_tag1)) {
testPrintE("socket setup failed: %s", strerror(errno));
return 1;
}
// ---------------
test_name = "setup sock1 and addr via tag";
testPrintI("* test: %s", test_name);
if (sock1.setup(valid_tag1)) {
testPrintE("socket setup failed: %s", strerror(errno));
return 1;
}
// ---------------
test_name = "setup tag limit";
testPrintI("* test: %s ", test_name);
char *max_tags_str;
asprintf(&max_tags_str, "%d", max_tags);
res = writeModuleParam("max_sock_tags", max_tags_str);
if (res < 0) {
testPrintE("! %s: Unexpected results", test_name);
free(max_tags_str);
return 1;
}
// ---------------
test_name = "tag quota reach limit";
testPrintI("* test: %s", test_name);
for (int cnt = 0; cnt < max_tags; cnt++ ) {
uint64_t new_tag = valid_tag2 + ((uint64_t)cnt << 32);
res = doCtrlCommand("t %d %llu %u", sock0.fd, new_tag , fake_uid2);
if (res < 0) {
testPrintE("! %s: Unexpected results", test_name);
total_errors++;
}
if (!sock0.checkTag(new_tag, fake_uid2)) {
testPrintE("! %s: Unexpected results: tag not found", test_name);
total_errors++;
}
}
test_name = "tag quota go over limit";
testPrintI("* test: %s", test_name);
{
uint64_t new_tag = valid_tag2 + ((uint64_t)max_tags << 32);
res = doCtrlCommand("t %d %llu %u", sock0.fd, new_tag , fake_uid2);
if (res > 0) {
testPrintE("! %s: Unexpected results", test_name);
total_errors++;
}
if (!sock0.checkTag(valid_tag2 + (((uint64_t)max_tags - 1) << 32), fake_uid2)) {
testPrintE("! %s: Unexpected results: tag not found", test_name);
total_errors++;
}
}
// ---------------
test_name = "valid untag";
testPrintI("* test: %s", test_name);
res = doCtrlCommand("u %d", sock0.fd);
if (res < 0) {
testPrintE("! %s: Unexpected results", test_name);
total_errors++;
}
if (sock0.checkTag(valid_tag2 + (((uint64_t)max_tags - 1) << 32), fake_uid2)) {
testPrintE("! %s: Unexpected results: tag should not be there", test_name);
total_errors++;
}
// ---------------
test_name = "tag after untag shouldn't free up max tags";
testPrintI("* test: %s", test_name);
{
uint64_t new_tag = valid_tag2 + ((uint64_t)max_tags << 32);
res = doCtrlCommand("t %d %llu %u", sock0.fd, new_tag , fake_uid2);
if (res > 0) {
testPrintE("! %s: Unexpected results", test_name);
total_errors++;
}
if (sock0.checkTag(valid_tag2 + ((uint64_t)max_tags << 32), fake_uid2)) {
testPrintE("! %s: Unexpected results: tag should not be there", test_name);
total_errors++;
}
}
// ---------------
test_name = "delete one tag";
testPrintI("* test: %s", test_name);
{
uint64_t new_tag = valid_tag2 + (((uint64_t)max_tags / 2) << 32);
res = doCtrlCommand("d %llu %u", new_tag, fake_uid2);
if (res < 0) {
testPrintE("! %s: Unexpected results", test_name);
total_errors++;
}
}
// ---------------
test_name = "2 tags after 1 delete pass/fail";
testPrintI("* test: %s", test_name);
{
uint64_t new_tag;
new_tag = valid_tag2 + (((uint64_t)max_tags + 1 ) << 32);
res = doCtrlCommand("t %d %llu %u", sock0.fd, new_tag , fake_uid2);
if (res < 0) {
testPrintE("! %s: Unexpected results", test_name);
total_errors++;
}
if (!sock0.checkTag(valid_tag2 + (((uint64_t)max_tags + 1) << 32), fake_uid2)) {
testPrintE("! %s: Unexpected results: tag not found", test_name);
total_errors++;
}
new_tag = valid_tag2 + (((uint64_t)max_tags + 2 ) << 32);
res = doCtrlCommand("t %d %llu %u", sock0.fd, new_tag , fake_uid2);
if (res > 0) {
testPrintE("! %s: Unexpected results", test_name);
total_errors++;
}
if (sock0.checkTag(valid_tag2 + (((uint64_t)max_tags + 2) << 32), fake_uid2)) {
testPrintE("! %s: Unexpected results: tag should not be there", test_name);
total_errors++;
}
}
/* TODO(jpa): test tagging two different sockets with same tags and
* check refcounts the tag_node should be +2
*/
// ---------------
if (total_errors) {
testPrintE("! Errors found");
} else {
testPrintI("No Errors found");
}
done:
if (dev_fd >= 0) {
close(dev_fd);
}
if (ctrl_fd >= 0) {
close(ctrl_fd);
}
return total_errors;
}