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/*
* Copyright © 2012 Collabora, Ltd.
*
* Permission is hereby granted, free of charge, to any person obtaining
* a copy of this software and associated documentation files (the
* "Software"), to deal in the Software without restriction, including
* without limitation the rights to use, copy, modify, merge, publish,
* distribute, sublicense, and/or sell copies of the Software, and to
* permit persons to whom the Software is furnished to do so, subject to
* the following conditions:
*
* The above copyright notice and this permission notice (including the
* next paragraph) shall be included in all copies or substantial
* portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
#include "config.h"
#include <assert.h>
#include <errno.h>
#include <dirent.h>
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <time.h>
#include <sys/time.h>
#include <sys/resource.h>
#ifdef HAVE_SYS_PRCTL_H
#include <sys/prctl.h>
#endif
#include "test-runner.h"
#if defined(__FreeBSD__)
#include <sys/sysctl.h>
/*
* On FreeBSD, get file descriptor information using sysctl() since that does
* not depend on a mounted fdescfs (which provides /dev/fd/N for N > 2).
*/
int
count_open_fds(void)
{
int error;
int nfds;
int mib[4] = {CTL_KERN, KERN_PROC, KERN_PROC_NFDS, 0 };
size_t len;
len = sizeof(nfds);
error = sysctl(mib, 4, &nfds, &len, NULL, 0);
assert(error == 0 && "sysctl KERN_PROC_NFDS failed.");
return nfds;
}
#else
int
count_open_fds(void)
{
DIR *dir;
struct dirent *ent;
int count = 0;
/*
* Using /dev/fd instead of /proc/self/fd should allow this code to
* work on non-Linux operating systems.
*/
dir = opendir("/dev/fd");
assert(dir && "opening /dev/fd failed.");
errno = 0;
while ((ent = readdir(dir))) {
const char *s = ent->d_name;
if (s[0] == '.' && (s[1] == 0 || (s[1] == '.' && s[2] == 0)))
continue;
count++;
}
assert(errno == 0 && "reading /dev/fd failed.");
closedir(dir);
return count;
}
#endif
void
exec_fd_leak_check(int nr_expected_fds)
{
const char *exe = "exec-fd-leak-checker";
char number[16] = { 0 };
const char *test_build_dir = getenv("TEST_BUILD_DIR");
char exe_path[256] = { 0 };
if (test_build_dir == NULL || test_build_dir[0] == 0) {
test_build_dir = ".";
}
snprintf(exe_path, sizeof exe_path - 1, "%s/%s", test_build_dir, exe);
snprintf(number, sizeof number - 1, "%d", nr_expected_fds);
execl(exe_path, exe, number, (char *)NULL);
assert(0 && "execing fd leak checker failed");
}
#define USEC_TO_NSEC(n) (1000 * (n))
/* our implementation of usleep and sleep functions that are safe to use with
* timeouts (timeouts are implemented using alarm(), so it is not safe use
* usleep and sleep. See man pages of these functions)
*/
void
test_usleep(useconds_t usec)
{
struct timespec ts = {
.tv_sec = 0,
.tv_nsec = USEC_TO_NSEC(usec)
};
assert(nanosleep(&ts, NULL) == 0);
}
/* we must write the whole function instead of
* wrapping test_usleep, because useconds_t may not
* be able to contain such a big number of microseconds */
void
test_sleep(unsigned int sec)
{
struct timespec ts = {
.tv_sec = sec,
.tv_nsec = 0
};
assert(nanosleep(&ts, NULL) == 0);
}
/** Try to disable coredumps
*
* Useful for tests that crash on purpose, to avoid creating a core file
* or launching an application crash handler service or cluttering coredumpctl.
*
* NOTE: Calling this may make the process undebuggable.
*/
void
test_disable_coredumps(void)
{
struct rlimit r;
if (getrlimit(RLIMIT_CORE, &r) == 0) {
r.rlim_cur = 0;
setrlimit(RLIMIT_CORE, &r);
}
#if defined(HAVE_PRCTL) && defined(PR_SET_DUMPABLE)
prctl(PR_SET_DUMPABLE, 0, 0, 0, 0);
#endif
}
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