mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-17 12:56:55 +07:00
0b02503384
This patch adds tests for the vsock_diag.ko module. These tests are not self-tests because they require manual set up of a KVM or VMware guest. Please see tools/testing/vsock/README for instructions. The control.h and timeout.h infrastructure can be used for additional AF_VSOCK tests in the future. Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
65 lines
1.4 KiB
C
65 lines
1.4 KiB
C
/* Timeout API for single-threaded programs that use blocking
|
|
* syscalls (read/write/send/recv/connect/accept).
|
|
*
|
|
* Copyright (C) 2017 Red Hat, Inc.
|
|
*
|
|
* Author: Stefan Hajnoczi <stefanha@redhat.com>
|
|
*
|
|
* 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; version 2
|
|
* of the License.
|
|
*/
|
|
|
|
/* Use the following pattern:
|
|
*
|
|
* timeout_begin(TIMEOUT);
|
|
* do {
|
|
* ret = accept(...);
|
|
* timeout_check("accept");
|
|
* } while (ret < 0 && ret == EINTR);
|
|
* timeout_end();
|
|
*/
|
|
|
|
#include <stdlib.h>
|
|
#include <stdbool.h>
|
|
#include <unistd.h>
|
|
#include <stdio.h>
|
|
#include "timeout.h"
|
|
|
|
static volatile bool timeout;
|
|
|
|
/* SIGALRM handler function. Do not use sleep(2), alarm(2), or
|
|
* setitimer(2) while using this API - they may interfere with each
|
|
* other.
|
|
*/
|
|
void sigalrm(int signo)
|
|
{
|
|
timeout = true;
|
|
}
|
|
|
|
/* Start a timeout. Call timeout_check() to verify that the timeout hasn't
|
|
* expired. timeout_end() must be called to stop the timeout. Timeouts cannot
|
|
* be nested.
|
|
*/
|
|
void timeout_begin(unsigned int seconds)
|
|
{
|
|
alarm(seconds);
|
|
}
|
|
|
|
/* Exit with an error message if the timeout has expired */
|
|
void timeout_check(const char *operation)
|
|
{
|
|
if (timeout) {
|
|
fprintf(stderr, "%s timed out\n", operation);
|
|
exit(EXIT_FAILURE);
|
|
}
|
|
}
|
|
|
|
/* Stop a timeout */
|
|
void timeout_end(void)
|
|
{
|
|
alarm(0);
|
|
timeout = false;
|
|
}
|