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// SPDX-License-Identifier: GPL-2.0-only
/*
* vsock test utilities
*
* Copyright (C) 2017 Red Hat, Inc.
*
* Author: Stefan Hajnoczi <stefanha@redhat.com>
*/
#include <errno.h>
#include <stdio.h>
#include <stdlib.h>
#include <signal.h>
#include <unistd.h>
#include "timeout.h"
#include "control.h"
#include "util.h"
/* Install signal handlers */
void init_signals(void)
{
struct sigaction act = {
.sa_handler = sigalrm,
};
sigaction(SIGALRM, &act, NULL);
signal(SIGPIPE, SIG_IGN);
}
/* Parse a CID in string representation */
unsigned int parse_cid(const char *str)
{
char *endptr = NULL;
unsigned long n;
errno = 0;
n = strtoul(str, &endptr, 10);
if (errno || *endptr != '\0') {
fprintf(stderr, "malformed CID \"%s\"\n", str);
exit(EXIT_FAILURE);
}
return n;
}
/* Connect to <cid, port> and return the file descriptor. */
int vsock_stream_connect(unsigned int cid, unsigned int port)
{
union {
struct sockaddr sa;
struct sockaddr_vm svm;
} addr = {
.svm = {
.svm_family = AF_VSOCK,
.svm_port = port,
.svm_cid = cid,
},
};
int ret;
int fd;
control_expectln("LISTENING");
fd = socket(AF_VSOCK, SOCK_STREAM, 0);
timeout_begin(TIMEOUT);
do {
ret = connect(fd, &addr.sa, sizeof(addr.svm));
timeout_check("connect");
} while (ret < 0 && errno == EINTR);
timeout_end();
if (ret < 0) {
int old_errno = errno;
close(fd);
fd = -1;
errno = old_errno;
}
return fd;
}
/* Listen on <cid, port> and return the first incoming connection. The remote
* address is stored to clientaddrp. clientaddrp may be NULL.
*/
int vsock_stream_accept(unsigned int cid, unsigned int port,
struct sockaddr_vm *clientaddrp)
{
union {
struct sockaddr sa;
struct sockaddr_vm svm;
} addr = {
.svm = {
.svm_family = AF_VSOCK,
.svm_port = port,
.svm_cid = cid,
},
};
union {
struct sockaddr sa;
struct sockaddr_vm svm;
} clientaddr;
socklen_t clientaddr_len = sizeof(clientaddr.svm);
int fd;
int client_fd;
int old_errno;
fd = socket(AF_VSOCK, SOCK_STREAM, 0);
if (bind(fd, &addr.sa, sizeof(addr.svm)) < 0) {
perror("bind");
exit(EXIT_FAILURE);
}
if (listen(fd, 1) < 0) {
perror("listen");
exit(EXIT_FAILURE);
}
control_writeln("LISTENING");
timeout_begin(TIMEOUT);
do {
client_fd = accept(fd, &clientaddr.sa, &clientaddr_len);
timeout_check("accept");
} while (client_fd < 0 && errno == EINTR);
timeout_end();
old_errno = errno;
close(fd);
errno = old_errno;
if (client_fd < 0)
return client_fd;
if (clientaddr_len != sizeof(clientaddr.svm)) {
fprintf(stderr, "unexpected addrlen from accept(2), %zu\n",
(size_t)clientaddr_len);
exit(EXIT_FAILURE);
}
if (clientaddr.sa.sa_family != AF_VSOCK) {
fprintf(stderr, "expected AF_VSOCK from accept(2), got %d\n",
clientaddr.sa.sa_family);
exit(EXIT_FAILURE);
}
if (clientaddrp)
*clientaddrp = clientaddr.svm;
return client_fd;
}
/* Run test cases. The program terminates if a failure occurs. */
void run_tests(const struct test_case *test_cases,
const struct test_opts *opts)
{
int i;
for (i = 0; test_cases[i].name; i++) {
void (*run)(const struct test_opts *opts);
printf("%s...", test_cases[i].name);
fflush(stdout);
if (opts->mode == TEST_MODE_CLIENT)
run = test_cases[i].run_client;
else
run = test_cases[i].run_server;
if (run)
run(opts);
printf("ok\n");
}
}
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