Adding upstream version 2:4.20.0+dfsg.upstream/2%4.20.0+dfsg

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 501 insertions, 0 deletions

diff --git a/ctdb/tests/src/comm_test.c b/ctdb/tests/src/comm_test.c
new file mode 100644
index 0000000..4595928
--- /dev/null
+++ b/ctdb/tests/src/comm_test.c
@@ -0,0 +1,501 @@
+/*
+   comm tests
+
+   Copyright (C) Amitay Isaacs  2015
+
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program; if not, see <http://www.gnu.org/licenses/>.
+*/
+
+#include "replace.h"
+#include "system/filesys.h"
+
+#include <assert.h>
+
+#include "common/pkt_read.c"
+#include "common/pkt_write.c"
+#include "common/comm.c"
+
+/*
+ * Test read_handler and dead_handler
+ */
+
+static void test1_read_handler(uint8_t *buf, size_t buflen,
+			       void *private_data)
+{
+	int *result = (int *)private_data;
+
+	*result = -1;
+}
+
+static void test1_dead_handler(void *private_data)
+{
+	int *result = (int *)private_data;
+
+	*result = 1;
+}
+
+static void test1(void)
+{
+	TALLOC_CTX *mem_ctx;
+	struct tevent_context *ev;
+	struct comm_context *comm;
+	int fd[2];
+	int result = 0;
+	uint32_t data[2];
+	int ret;
+	ssize_t n;
+
+	mem_ctx = talloc_new(NULL);
+	assert(mem_ctx != NULL);
+
+	ev = tevent_context_init(mem_ctx);
+	assert(ev != NULL);
+
+	ret = pipe(fd);
+	assert(ret == 0);
+
+	ret = comm_setup(ev, ev, fd[0], test1_read_handler, &result,
+			 test1_dead_handler, &result, &comm);
+	assert(ret == 0);
+
+	data[0] = 2 * sizeof(uint32_t);
+	data[1] = 0;
+
+	n = write(fd[1], (void *)&data, data[0]);
+	assert(n == data[0]);
+
+	while (result == 0) {
+		tevent_loop_once(ev);
+	}
+
+	assert(result == -1);
+
+	result = 0;
+	close(fd[1]);
+
+	while (result == 0) {
+		tevent_loop_once(ev);
+	}
+
+	assert(result == 1);
+
+	talloc_free(mem_ctx);
+}
+
+/*
+ * Test that the tevent_req returned by comm_write_send() can be free'd.
+ */
+
+struct test2_state {
+	TALLOC_CTX *mem_ctx;
+	bool done;
+};
+
+static void test2_read_handler(uint8_t *buf, size_t buflen,
+			       void *private_data)
+{
+	struct test2_state *state = (struct test2_state *)private_data;
+
+	TALLOC_FREE(state->mem_ctx);
+}
+
+static void test2_dead_handler(void *private_data)
+{
+	abort();
+}
+
+struct test2_write_state {
+	int count;
+};
+
+static void test2_write_done(struct tevent_req *subreq);
+
+static struct tevent_req *test2_write_send(TALLOC_CTX *mem_ctx,
+					   struct tevent_context *ev,
+					   struct comm_context *comm,
+					   uint8_t *buf, size_t buflen)
+{
+	struct tevent_req *req, *subreq;
+	struct test2_write_state *state;
+	int i;
+
+	req = tevent_req_create(mem_ctx, &state, struct test2_write_state);
+	if (req == NULL) {
+		return NULL;
+	}
+
+	state->count = 0;
+
+	for (i=0; i<10; i++) {
+		subreq = comm_write_send(state, ev, comm, buf, buflen);
+		if (tevent_req_nomem(subreq, req)) {
+			return tevent_req_post(req, ev);
+		}
+		tevent_req_set_callback(subreq, test2_write_done, req);
+	}
+
+	return req;
+}
+
+static void test2_write_done(struct tevent_req *subreq)
+{
+	struct tevent_req *req = tevent_req_callback_data(
+		subreq, struct tevent_req);
+	struct test2_write_state *state = tevent_req_data(
+		req, struct test2_write_state);
+	bool status;
+	int ret;
+
+	status = comm_write_recv(subreq, &ret);
+	TALLOC_FREE(subreq);
+	if (! status) {
+		tevent_req_error(req, ret);
+		return;
+	}
+
+	state->count += 1;
+
+	if (state->count == 10) {
+		tevent_req_done(req);
+	}
+}
+
+static void test2_timer_handler(struct tevent_context *ev,
+				struct tevent_timer *te,
+				struct timeval cur_time,
+				void *private_data)
+{
+	struct test2_state *state = (struct test2_state *)private_data;
+
+	state->done = true;
+}
+
+static void test2(void)
+{
+	TALLOC_CTX *mem_ctx;
+	struct tevent_context *ev;
+	struct comm_context *comm_reader, *comm_writer;
+	struct test2_state test2_state;
+	struct tevent_req *req;
+	struct tevent_timer *te;
+	int fd[2];
+	uint32_t data[2];
+	int ret;
+
+	mem_ctx = talloc_new(NULL);
+	assert(mem_ctx != NULL);
+
+	test2_state.mem_ctx = talloc_new(mem_ctx);
+	assert(test2_state.mem_ctx != NULL);
+
+	test2_state.done = false;
+
+	ev = tevent_context_init(mem_ctx);
+	assert(ev != NULL);
+
+	ret = pipe(fd);
+	assert(ret == 0);
+
+	ret = comm_setup(ev, ev, fd[0], test2_read_handler, &test2_state,
+			 test2_dead_handler, NULL, &comm_reader);
+	assert(ret == 0);
+
+	ret = comm_setup(ev, ev, fd[1], NULL, NULL, test2_dead_handler, NULL,
+			 &comm_writer);
+	assert(ret == 0);
+
+	data[0] = 2 * sizeof(uint32_t);
+	data[1] = 0;
+
+	req = test2_write_send(test2_state.mem_ctx, ev, comm_writer,
+			       (uint8_t *)data, data[0]);
+	assert(req != NULL);
+
+	te = tevent_add_timer(ev, ev, tevent_timeval_current_ofs(5,0),
+			      test2_timer_handler, &test2_state);
+	assert(te != NULL);
+
+	while (! test2_state.done) {
+		tevent_loop_once(ev);
+	}
+
+	talloc_free(mem_ctx);
+}
+
+/*
+ * Test that data is written and read correctly.
+ */
+
+static void test3_dead_handler(void *private_data)
+{
+	int dead_data = *(int *)private_data;
+
+	assert(dead_data == 1 || dead_data == 2);
+
+	if (dead_data == 1) {
+		/* reader */
+		fprintf(stderr, "writer closed pipe\n");
+	} else {
+		/* writer */
+		fprintf(stderr, "reader closed pipe\n");
+	}
+}
+
+struct test3_writer_state {
+	struct tevent_context *ev;
+	struct comm_context *comm;
+	uint8_t *buf;
+	size_t *pkt_size;
+	int count, id;
+};
+
+static void test3_writer_next(struct tevent_req *subreq);
+
+static struct tevent_req *test3_writer_send(TALLOC_CTX *mem_ctx,
+					    struct tevent_context *ev,
+					    struct comm_context *comm,
+					    size_t *pkt_size, size_t count)
+{
+	struct tevent_req *req, *subreq;
+	struct test3_writer_state *state;
+	size_t max_size = 0, buflen;
+	size_t i;
+
+	for (i=0; i<count; i++) {
+		if (pkt_size[i] > max_size) {
+			max_size = pkt_size[i];
+		}
+	}
+
+	req = tevent_req_create(mem_ctx, &state, struct test3_writer_state);
+	if (req == NULL) {
+		return NULL;
+	}
+
+	state->ev = ev;
+	state->comm = comm;
+	state->pkt_size = pkt_size;
+	state->count = count;
+	state->id = 0;
+
+	state->buf = talloc_array(state, uint8_t, max_size);
+	if (state->buf == NULL) {
+		talloc_free(req);
+		return NULL;
+	}
+	for (i=0; i<max_size; i++) {
+		state->buf[i] = i%256;
+	}
+
+	buflen = state->pkt_size[state->id];
+	*(uint32_t *)state->buf = buflen;
+	subreq = comm_write_send(state, state->ev, state->comm,
+					 state->buf, buflen);
+	if (tevent_req_nomem(subreq, req)) {
+		return tevent_req_post(req, ev);
+	}
+
+	tevent_req_set_callback(subreq, test3_writer_next, req);
+	return req;
+}
+
+static void test3_writer_next(struct tevent_req *subreq)
+{
+	struct tevent_req *req = tevent_req_callback_data(
+		subreq, struct tevent_req);
+	struct test3_writer_state *state = tevent_req_data(
+		req, struct test3_writer_state);
+	bool ret;
+	int err;
+	size_t buflen;
+
+	ret = comm_write_recv(subreq, &err);
+	TALLOC_FREE(subreq);
+	if (!ret) {
+		tevent_req_error(req, err);
+		return;
+	}
+
+	state->id++;
+	if (state->id >= state->count) {
+		tevent_req_done(req);
+		return;
+	}
+
+	buflen = state->pkt_size[state->id];
+	*(uint32_t *)state->buf = buflen;
+	subreq = comm_write_send(state, state->ev, state->comm,
+					 state->buf, buflen);
+	if (tevent_req_nomem(subreq, req)) {
+		return;
+	}
+
+	tevent_req_set_callback(subreq, test3_writer_next, req);
+}
+
+static void test3_writer_recv(struct tevent_req *req, int *perr)
+{
+	if (tevent_req_is_unix_error(req, perr)) {
+		return;
+	}
+	*perr = 0;
+}
+
+static void test3_writer(int fd, size_t *pkt_size, size_t count)
+{
+	TALLOC_CTX *mem_ctx;
+	struct tevent_context *ev;
+	struct comm_context *comm;
+	struct tevent_req *req;
+	int dead_data = 2;
+	int err;
+
+	mem_ctx = talloc_new(NULL);
+	assert(mem_ctx != NULL);
+
+	ev = tevent_context_init(mem_ctx);
+	assert(ev != NULL);
+
+	err = comm_setup(mem_ctx, ev, fd, NULL, NULL,
+			 test3_dead_handler, &dead_data, &comm);
+	assert(err == 0);
+	assert(comm != NULL);
+
+	req = test3_writer_send(mem_ctx, ev, comm, pkt_size, count);
+	assert(req != NULL);
+
+	tevent_req_poll(req, ev);
+
+	test3_writer_recv(req, &err);
+	assert(err == 0);
+
+	talloc_free(mem_ctx);
+}
+
+struct test3_reader_state {
+	size_t *pkt_size;
+	int count, received;
+	bool done;
+};
+
+static void test3_reader_handler(uint8_t *buf, size_t buflen,
+				 void *private_data)
+{
+	struct test3_reader_state *state = talloc_get_type_abort(
+		private_data, struct test3_reader_state);
+
+	assert(buflen == state->pkt_size[state->received]);
+	printf("%zi ", buflen);
+	state->received++;
+
+	if (state->received == state->count) {
+		printf("\n");
+		state->done = true;
+	}
+}
+
+static void test3_reader(int fd, size_t *pkt_size, int count)
+{
+	TALLOC_CTX *mem_ctx;
+	struct tevent_context *ev;
+	struct comm_context *comm;
+	struct test3_reader_state *state;
+	int dead_data = 1;
+	int err;
+
+	mem_ctx = talloc_new(NULL);
+	assert(mem_ctx != NULL);
+
+	ev = tevent_context_init(mem_ctx);
+	assert(ev != NULL);
+
+	state = talloc_zero(mem_ctx, struct test3_reader_state);
+	assert(state != NULL);
+
+	state->pkt_size = pkt_size;
+	state->count = count;
+	state->received = 0;
+	state->done = false;
+
+	err = comm_setup(mem_ctx, ev, fd, test3_reader_handler, state,
+			 test3_dead_handler, &dead_data, &comm);
+	assert(err == 0);
+	assert(comm != NULL);
+
+	while (!state->done) {
+		tevent_loop_once(ev);
+	}
+
+	talloc_free(mem_ctx);
+}
+
+static void test3(void)
+{
+	int fd[2];
+	int ret;
+	pid_t pid;
+	size_t pkt_size[13] = { 100, 2048, 500, 4096, 1024, 8192,
+			      200, 16384, 300, 32768, 400, 65536,
+			      1024*1024 };
+
+	ret = pipe(fd);
+	assert(ret == 0);
+
+	pid = fork();
+	assert(pid != -1);
+
+	if (pid == 0) {
+		/* Child process */
+		close(fd[0]);
+		test3_writer(fd[1], pkt_size, 13);
+		close(fd[1]);
+		exit(0);
+	}
+
+	close(fd[1]);
+	test3_reader(fd[0], pkt_size, 13);
+	close(fd[0]);
+}
+
+
+int main(int argc, const char **argv)
+{
+	int num;
+
+	if (argc != 2) {
+		fprintf(stderr, "%s <testnum>\n", argv[0]);
+		exit(1);
+	}
+
+	num = atoi(argv[1]);
+
+	switch (num) {
+	case 1:
+		test1();
+		break;
+
+	case 2:
+		test2();
+		break;
+
+	case 3:
+		test3();
+		break;
+
+	default:
+		fprintf(stderr, "Unknown test number %s\n", argv[1]);
+	}
+
+	return 0;
+}