VSOCK: add send_byte()/recv_byte() test utilities (092f32ae) · Commits · 戴 / test

tools/testing/vsock/util.c

+103 −0

Original line number	Diff line number	Diff line
		@@ -9,6 +9,7 @@

		#include <errno.h>
		#include <stdio.h>
		#include <stdint.h>
		#include <stdlib.h>
		#include <signal.h>
		#include <unistd.h>
		@@ -149,6 +150,108 @@ int vsock_stream_accept(unsigned int cid, unsigned int port,
		return client_fd;
		}

		/* Transmit one byte and check the return value.
		*
		* expected_ret:
		* <0 Negative errno (for testing errors)
		* 0 End-of-file
		* 1 Success
		*/
		void send_byte(int fd, int expected_ret, int flags)
		{
		const uint8_t byte = 'A';
		ssize_t nwritten;

		timeout_begin(TIMEOUT);
		do {
		nwritten = send(fd, &byte, sizeof(byte), flags);
		timeout_check("write");
		} while (nwritten < 0 && errno == EINTR);
		timeout_end();

		if (expected_ret < 0) {
		if (nwritten != -1) {
		fprintf(stderr, "bogus send(2) return value %zd\n",
		nwritten);
		exit(EXIT_FAILURE);
		}
		if (errno != -expected_ret) {
		perror("write");
		exit(EXIT_FAILURE);
		}
		return;
		}

		if (nwritten < 0) {
		perror("write");
		exit(EXIT_FAILURE);
		}
		if (nwritten == 0) {
		if (expected_ret == 0)
		return;

		fprintf(stderr, "unexpected EOF while sending byte\n");
		exit(EXIT_FAILURE);
		}
		if (nwritten != sizeof(byte)) {
		fprintf(stderr, "bogus send(2) return value %zd\n", nwritten);
		exit(EXIT_FAILURE);
		}
		}

		/* Receive one byte and check the return value.
		*
		* expected_ret:
		* <0 Negative errno (for testing errors)
		* 0 End-of-file
		* 1 Success
		*/
		void recv_byte(int fd, int expected_ret, int flags)
		{
		uint8_t byte;
		ssize_t nread;

		timeout_begin(TIMEOUT);
		do {
		nread = recv(fd, &byte, sizeof(byte), flags);
		timeout_check("read");
		} while (nread < 0 && errno == EINTR);
		timeout_end();

		if (expected_ret < 0) {
		if (nread != -1) {
		fprintf(stderr, "bogus recv(2) return value %zd\n",
		nread);
		exit(EXIT_FAILURE);
		}
		if (errno != -expected_ret) {
		perror("read");
		exit(EXIT_FAILURE);
		}
		return;
		}

		if (nread < 0) {
		perror("read");
		exit(EXIT_FAILURE);
		}
		if (nread == 0) {
		if (expected_ret == 0)
		return;

		fprintf(stderr, "unexpected EOF while receiving byte\n");
		exit(EXIT_FAILURE);
		}
		if (nread != sizeof(byte)) {
		fprintf(stderr, "bogus recv(2) return value %zd\n", nread);
		exit(EXIT_FAILURE);
		}
		if (byte != 'A') {
		fprintf(stderr, "unexpected byte read %c\n", byte);
		exit(EXIT_FAILURE);
		}
		}

		/* Run test cases. The program terminates if a failure occurs. */
		void run_tests(const struct test_case *test_cases,
		const struct test_opts *opts)

tools/testing/vsock/util.h

+2 −0

Original line number	Diff line number	Diff line
		@@ -36,6 +36,8 @@ unsigned int parse_cid(const char *str);
		int vsock_stream_connect(unsigned int cid, unsigned int port);
		int vsock_stream_accept(unsigned int cid, unsigned int port,
		struct sockaddr_vm *clientaddrp);
		void send_byte(int fd, int expected_ret, int flags);
		void recv_byte(int fd, int expected_ret, int flags);
		void run_tests(const struct test_case *test_cases,
		const struct test_opts *opts);

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