a77f6bf6c4
The tests that run exec-fd-leak-checker expect the binary to be located in the current directory. This is not always the case; for instance, the binaries could be built under `tests`, but be invoked under the top-level build directory. We can use an environment variable to control what's the location of the test binaries, and fall back to the current directory if the variable is unset. Reviewed-by: Daniel Stone <daniels@collabora.com>
139 lines
3.5 KiB
C
139 lines
3.5 KiB
C
/*
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* Copyright © 2012 Collabora, Ltd.
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*
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* Permission is hereby granted, free of charge, to any person obtaining
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* a copy of this software and associated documentation files (the
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* "Software"), to deal in the Software without restriction, including
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* without limitation the rights to use, copy, modify, merge, publish,
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* distribute, sublicense, and/or sell copies of the Software, and to
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* permit persons to whom the Software is furnished to do so, subject to
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* the following conditions:
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*
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* The above copyright notice and this permission notice (including the
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* next paragraph) shall be included in all copies or substantial
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* portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
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* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
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* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*/
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#include "config.h"
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#include <assert.h>
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#include <errno.h>
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#include <dirent.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include <time.h>
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#include <sys/time.h>
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#include <sys/resource.h>
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#ifdef HAVE_SYS_PRCTL_H
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#include <sys/prctl.h>
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#endif
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#include "test-runner.h"
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int
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count_open_fds(void)
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{
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DIR *dir;
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struct dirent *ent;
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int count = 0;
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dir = opendir("/proc/self/fd");
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assert(dir && "opening /proc/self/fd failed.");
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errno = 0;
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while ((ent = readdir(dir))) {
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const char *s = ent->d_name;
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if (s[0] == '.' && (s[1] == 0 || (s[1] == '.' && s[2] == 0)))
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continue;
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count++;
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}
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assert(errno == 0 && "reading /proc/self/fd failed.");
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closedir(dir);
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return count;
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}
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void
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exec_fd_leak_check(int nr_expected_fds)
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{
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const char *exe = "exec-fd-leak-checker";
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char number[16] = { 0 };
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const char *test_build_dir = getenv("TEST_BUILD_DIR");
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char exe_path[256] = { 0 };
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if (test_build_dir == NULL || test_build_dir[0] == 0) {
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test_build_dir = ".";
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}
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snprintf(exe_path, sizeof exe_path - 1, "%s/%s", test_build_dir, exe);
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snprintf(number, sizeof number - 1, "%d", nr_expected_fds);
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execl(exe_path, exe, number, (char *)NULL);
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assert(0 && "execing fd leak checker failed");
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}
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#define USEC_TO_NSEC(n) (1000 * (n))
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/* our implementation of usleep and sleep functions that are safe to use with
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* timeouts (timeouts are implemented using alarm(), so it is not safe use
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* usleep and sleep. See man pages of these functions)
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*/
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void
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test_usleep(useconds_t usec)
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{
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struct timespec ts = {
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.tv_sec = 0,
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.tv_nsec = USEC_TO_NSEC(usec)
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};
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assert(nanosleep(&ts, NULL) == 0);
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}
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/* we must write the whole function instead of
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* wrapping test_usleep, because useconds_t may not
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* be able to contain such a big number of microseconds */
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void
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test_sleep(unsigned int sec)
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{
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struct timespec ts = {
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.tv_sec = sec,
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.tv_nsec = 0
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};
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assert(nanosleep(&ts, NULL) == 0);
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}
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/** Try to disable coredumps
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*
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* Useful for tests that crash on purpose, to avoid creating a core file
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* or launching an application crash handler service or cluttering coredumpctl.
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*
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* NOTE: Calling this may make the process undebuggable.
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*/
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void
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test_disable_coredumps(void)
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{
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struct rlimit r;
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if (getrlimit(RLIMIT_CORE, &r) == 0) {
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r.rlim_cur = 0;
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setrlimit(RLIMIT_CORE, &r);
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}
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#if defined(HAVE_PRCTL) && defined(PR_SET_DUMPABLE)
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prctl(PR_SET_DUMPABLE, 0, 0, 0, 0);
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#endif
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}
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