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libvirt/tests/commandtest.c

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/*
* commandtest.c: Test the libCommand API
*
* Copyright (C) 2010-2014 Red Hat, Inc.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library. If not, see
* <http://www.gnu.org/licenses/>.
*/
#include <config.h>
#include <unistd.h>
#include <signal.h>
#include <sys/stat.h>
#include <sys/wait.h>
#include <fcntl.h>
#include "testutils.h"
#include "internal.h"
#include "viralloc.h"
#include "vircommand.h"
#include "virfile.h"
#include "virpidfile.h"
#include "virerror.h"
#include "virthread.h"
#include "virstring.h"
#include "virprocess.h"
#define VIR_FROM_THIS VIR_FROM_NONE
typedef struct _virCommandTestData virCommandTestData;
typedef virCommandTestData *virCommandTestDataPtr;
struct _virCommandTestData {
virMutex lock;
virThread thread;
bool quit;
bool running;
};
#ifdef WIN32
int
main(void)
{
return EXIT_AM_SKIP;
}
#else
static int checkoutput(const char *testname,
char *prefix)
{
int ret = -1;
char *expectname = NULL;
char *expectlog = NULL;
char *actualname = NULL;
char *actuallog = NULL;
expectname = g_strdup_printf("%s/commanddata/%s.log", abs_srcdir, testname);
actualname = g_strdup_printf("%s/commandhelper.log", abs_builddir);
if (virFileReadAll(expectname, 1024*64, &expectlog) < 0) {
fprintf(stderr, "cannot read %s\n", expectname);
goto cleanup;
}
if (virFileReadAll(actualname, 1024*64, &actuallog) < 0) {
fprintf(stderr, "cannot read %s\n", actualname);
goto cleanup;
}
if (prefix) {
char *tmp = NULL;
tmp = g_strdup_printf("%s%s", prefix, expectlog);
VIR_FREE(expectlog);
expectlog = tmp;
}
if (STRNEQ(expectlog, actuallog)) {
virTestDifference(stderr, expectlog, actuallog);
goto cleanup;
}
ret = 0;
cleanup:
if (actualname)
unlink(actualname);
VIR_FREE(actuallog);
VIR_FREE(actualname);
VIR_FREE(expectlog);
VIR_FREE(expectname);
return ret;
}
/*
* Run program, no args, inherit all ENV, keep CWD.
* Only stdin/out/err open
* No slot for return status must log error.
*/
static int test0(const void *unused G_GNUC_UNUSED)
{
virCommandPtr cmd;
int ret = -1;
cmd = virCommandNew(abs_builddir "/commandhelper-doesnotexist");
if (virCommandRun(cmd, NULL) == 0)
goto cleanup;
if (virGetLastErrorCode() == VIR_ERR_OK)
goto cleanup;
virResetLastError();
ret = 0;
cleanup:
virCommandFree(cmd);
return ret;
}
/*
* Run program, no args, inherit all ENV, keep CWD.
* Only stdin/out/err open
* Capturing return status must not log error.
*/
static int test1(const void *unused G_GNUC_UNUSED)
{
virCommandPtr cmd;
int ret = -1;
int status;
cmd = virCommandNew(abs_builddir "/commandhelper-doesnotexist");
if (virCommandRun(cmd, &status) < 0)
goto cleanup;
if (status != EXIT_ENOENT)
goto cleanup;
virCommandRawStatus(cmd);
if (virCommandRun(cmd, &status) < 0)
goto cleanup;
if (!WIFEXITED(status) || WEXITSTATUS(status) != EXIT_ENOENT)
goto cleanup;
ret = 0;
cleanup:
virCommandFree(cmd);
return ret;
}
/*
* Run program (twice), no args, inherit all ENV, keep CWD.
* Only stdin/out/err open
*/
static int test2(const void *unused G_GNUC_UNUSED)
{
virCommandPtr cmd = virCommandNew(abs_builddir "/commandhelper");
int ret;
if (virCommandRun(cmd, NULL) < 0) {
printf("Cannot run child %s\n", virGetLastErrorMessage());
virCommandFree(cmd);
return -1;
}
if ((ret = checkoutput("test2", NULL)) != 0) {
virCommandFree(cmd);
return ret;
}
if (virCommandRun(cmd, NULL) < 0) {
printf("Cannot run child %s\n", virGetLastErrorMessage());
virCommandFree(cmd);
return -1;
}
virCommandFree(cmd);
return checkoutput("test2", NULL);
}
/*
* Run program, no args, inherit all ENV, keep CWD.
* stdin/out/err + two extra FD open
*/
static int test3(const void *unused G_GNUC_UNUSED)
{
virCommandPtr cmd = virCommandNew(abs_builddir "/commandhelper");
int newfd1 = dup(STDERR_FILENO);
int newfd2 = dup(STDERR_FILENO);
int newfd3 = dup(STDERR_FILENO);
int ret = -1;
virCommandPassFD(cmd, newfd1, 0);
virCommandPassFD(cmd, newfd3,
VIR_COMMAND_PASS_FD_CLOSE_PARENT);
if (virCommandRun(cmd, NULL) < 0) {
printf("Cannot run child %s\n", virGetLastErrorMessage());
goto cleanup;
}
if (fcntl(newfd1, F_GETFL) < 0 ||
fcntl(newfd2, F_GETFL) < 0 ||
fcntl(newfd3, F_GETFL) >= 0) {
puts("fds in wrong state");
goto cleanup;
}
ret = checkoutput("test3", NULL);
cleanup:
virCommandFree(cmd);
/* coverity[double_close] */
VIR_FORCE_CLOSE(newfd1);
VIR_FORCE_CLOSE(newfd2);
return ret;
}
/*
* Run program, no args, inherit all ENV, CWD is /
* Only stdin/out/err open.
* Daemonized
*/
static int test4(const void *unused G_GNUC_UNUSED)
{
virCommandPtr cmd = virCommandNew(abs_builddir "/commandhelper");
char *pidfile = virPidFileBuildPath(abs_builddir, "commandhelper");
pid_t pid;
int ret = -1;
if (!pidfile)
goto cleanup;
virCommandSetPidFile(cmd, pidfile);
virCommandDaemonize(cmd);
if (virCommandRun(cmd, NULL) < 0) {
printf("Cannot run child %s\n", virGetLastErrorMessage());
goto cleanup;
}
if (virPidFileRead(abs_builddir, "commandhelper", &pid) < 0) {
printf("cannot read pidfile\n");
goto cleanup;
}
while (kill(pid, 0) != -1)
g_usleep(100*1000);
ret = checkoutput("test4", NULL);
cleanup:
virCommandFree(cmd);
if (pidfile)
unlink(pidfile);
VIR_FREE(pidfile);
return ret;
}
/*
* Run program, no args, inherit filtered ENV, keep CWD.
* Only stdin/out/err open
*/
static int test5(const void *unused G_GNUC_UNUSED)
{
virCommandPtr cmd = virCommandNew(abs_builddir "/commandhelper");
virCommandAddEnvPassCommon(cmd);
if (virCommandRun(cmd, NULL) < 0) {
printf("Cannot run child %s\n", virGetLastErrorMessage());
virCommandFree(cmd);
return -1;
}
virCommandFree(cmd);
return checkoutput("test5", NULL);
}
/*
* Run program, no args, inherit filtered ENV, keep CWD.
* Only stdin/out/err open
*/
static int test6(const void *unused G_GNUC_UNUSED)
{
virCommandPtr cmd = virCommandNew(abs_builddir "/commandhelper");
virCommandAddEnvPass(cmd, "DISPLAY");
virCommandAddEnvPass(cmd, "DOESNOTEXIST");
if (virCommandRun(cmd, NULL) < 0) {
printf("Cannot run child %s\n", virGetLastErrorMessage());
virCommandFree(cmd);
return -1;
}
virCommandFree(cmd);
return checkoutput("test6", NULL);
}
/*
* Run program, no args, inherit filtered ENV, keep CWD.
* Only stdin/out/err open
*/
static int test7(const void *unused G_GNUC_UNUSED)
{
virCommandPtr cmd = virCommandNew(abs_builddir "/commandhelper");
virCommandAddEnvPassCommon(cmd);
virCommandAddEnvPass(cmd, "DISPLAY");
virCommandAddEnvPass(cmd, "DOESNOTEXIST");
if (virCommandRun(cmd, NULL) < 0) {
printf("Cannot run child %s\n", virGetLastErrorMessage());
virCommandFree(cmd);
return -1;
}
virCommandFree(cmd);
return checkoutput("test7", NULL);
}
/*
* Run program, no args, inherit filtered ENV, keep CWD.
* Only stdin/out/err open
*/
static int test8(const void *unused G_GNUC_UNUSED)
{
virCommandPtr cmd = virCommandNew(abs_builddir "/commandhelper");
virCommandAddEnvString(cmd, "USER=bogus");
virCommandAddEnvString(cmd, "LANG=C");
virCommandAddEnvPair(cmd, "USER", "also bogus");
virCommandAddEnvPair(cmd, "USER", "test");
if (virCommandRun(cmd, NULL) < 0) {
printf("Cannot run child %s\n", virGetLastErrorMessage());
virCommandFree(cmd);
return -1;
}
virCommandFree(cmd);
return checkoutput("test8", NULL);
}
/*
* Run program, some args, inherit all ENV, keep CWD.
* Only stdin/out/err open
*/
static int test9(const void *unused G_GNUC_UNUSED)
{
virCommandPtr cmd = virCommandNew(abs_builddir "/commandhelper");
const char* const args[] = { "arg1", "arg2", NULL };
virBuffer buf = VIR_BUFFER_INITIALIZER;
virCommandAddArg(cmd, "-version");
virCommandAddArgPair(cmd, "-log", "bar.log");
virCommandAddArgSet(cmd, args);
virCommandAddArgBuffer(cmd, &buf);
virBufferAddLit(&buf, "arg4");
virCommandAddArgBuffer(cmd, &buf);
virCommandAddArgList(cmd, "arg5", "arg6", NULL);
if (virBufferUse(&buf)) {
printf("Buffer not transferred\n");
virBufferFreeAndReset(&buf);
virCommandFree(cmd);
return -1;
}
if (virCommandRun(cmd, NULL) < 0) {
printf("Cannot run child %s\n", virGetLastErrorMessage());
virCommandFree(cmd);
return -1;
}
virCommandFree(cmd);
return checkoutput("test9", NULL);
}
/*
* Run program, some args, inherit all ENV, keep CWD.
* Only stdin/out/err open
*/
static int test10(const void *unused G_GNUC_UNUSED)
{
virCommandPtr cmd = virCommandNew(abs_builddir "/commandhelper");
const char *const args[] = {
"-version", "-log=bar.log", NULL,
};
virCommandAddArgSet(cmd, args);
if (virCommandRun(cmd, NULL) < 0) {
printf("Cannot run child %s\n", virGetLastErrorMessage());
virCommandFree(cmd);
return -1;
}
virCommandFree(cmd);
return checkoutput("test10", NULL);
}
/*
* Run program, some args, inherit all ENV, keep CWD.
* Only stdin/out/err open
*/
static int test11(const void *unused G_GNUC_UNUSED)
{
const char *args[] = {
abs_builddir "/commandhelper",
"-version", "-log=bar.log", NULL,
};
virCommandPtr cmd = virCommandNewArgs(args);
if (virCommandRun(cmd, NULL) < 0) {
printf("Cannot run child %s\n", virGetLastErrorMessage());
virCommandFree(cmd);
return -1;
}
virCommandFree(cmd);
return checkoutput("test11", NULL);
}
/*
* Run program, no args, inherit all ENV, keep CWD.
* Only stdin/out/err open. Set stdin data
*/
static int test12(const void *unused G_GNUC_UNUSED)
{
virCommandPtr cmd = virCommandNew(abs_builddir "/commandhelper");
virCommandSetInputBuffer(cmd, "Hello World\n");
if (virCommandRun(cmd, NULL) < 0) {
printf("Cannot run child %s\n", virGetLastErrorMessage());
virCommandFree(cmd);
return -1;
}
virCommandFree(cmd);
return checkoutput("test12", NULL);
}
/*
* Run program, no args, inherit all ENV, keep CWD.
* Only stdin/out/err open. Set stdin data
*/
static int test13(const void *unused G_GNUC_UNUSED)
{
virCommandPtr cmd = virCommandNew(abs_builddir "/commandhelper");
char *outactual = NULL;
const char *outexpect = "BEGIN STDOUT\n"
"Hello World\n"
"END STDOUT\n";
int ret = -1;
virCommandSetInputBuffer(cmd, "Hello World\n");
virCommandSetOutputBuffer(cmd, &outactual);
if (virCommandRun(cmd, NULL) < 0) {
printf("Cannot run child %s\n", virGetLastErrorMessage());
goto cleanup;
}
if (!outactual)
goto cleanup;
virCommandFree(cmd);
cmd = NULL;
if (STRNEQ(outactual, outexpect)) {
virTestDifference(stderr, outexpect, outactual);
goto cleanup;
}
ret = checkoutput("test13", NULL);
cleanup:
virCommandFree(cmd);
VIR_FREE(outactual);
return ret;
}
/*
* Run program, no args, inherit all ENV, keep CWD.
* Only stdin/out/err open. Set stdin data
*/
static int test14(const void *unused G_GNUC_UNUSED)
{
virCommandPtr cmd = virCommandNew(abs_builddir "/commandhelper");
char *outactual = NULL;
const char *outexpect = "BEGIN STDOUT\n"
"Hello World\n"
"END STDOUT\n";
char *erractual = NULL;
const char *errexpect = "BEGIN STDERR\n"
"Hello World\n"
"END STDERR\n";
char *jointactual = NULL;
const char *jointexpect = "BEGIN STDOUT\n"
"BEGIN STDERR\n"
"Hello World\n"
"Hello World\n"
"END STDOUT\n"
"END STDERR\n";
int ret = -1;
virCommandSetInputBuffer(cmd, "Hello World\n");
virCommandSetOutputBuffer(cmd, &outactual);
virCommandSetErrorBuffer(cmd, &erractual);
if (virCommandRun(cmd, NULL) < 0) {
printf("Cannot run child %s\n", virGetLastErrorMessage());
goto cleanup;
}
if (!outactual || !erractual)
goto cleanup;
virCommandFree(cmd);
cmd = virCommandNew(abs_builddir "/commandhelper");
virCommandSetInputBuffer(cmd, "Hello World\n");
virCommandSetOutputBuffer(cmd, &jointactual);
virCommandSetErrorBuffer(cmd, &jointactual);
if (virCommandRun(cmd, NULL) < 0) {
printf("Cannot run child %s\n", virGetLastErrorMessage());
goto cleanup;
}
if (!jointactual)
goto cleanup;
if (STRNEQ(outactual, outexpect)) {
virTestDifference(stderr, outexpect, outactual);
goto cleanup;
}
if (STRNEQ(erractual, errexpect)) {
virTestDifference(stderr, errexpect, erractual);
goto cleanup;
}
if (STRNEQ(jointactual, jointexpect)) {
virTestDifference(stderr, jointexpect, jointactual);
goto cleanup;
}
ret = checkoutput("test14", NULL);
cleanup:
virCommandFree(cmd);
VIR_FREE(outactual);
VIR_FREE(erractual);
VIR_FREE(jointactual);
return ret;
}
/*
* Run program, no args, inherit all ENV, change CWD.
* Only stdin/out/err open
*/
static int test15(const void *unused G_GNUC_UNUSED)
{
virCommandPtr cmd = virCommandNew(abs_builddir "/commandhelper");
char *cwd = NULL;
int ret = -1;
cwd = g_strdup_printf("%s/commanddata", abs_srcdir);
virCommandSetWorkingDirectory(cmd, cwd);
virCommandSetUmask(cmd, 002);
if (virCommandRun(cmd, NULL) < 0) {
printf("Cannot run child %s\n", virGetLastErrorMessage());
goto cleanup;
}
ret = checkoutput("test15", NULL);
cleanup:
VIR_FREE(cwd);
virCommandFree(cmd);
return ret;
}
/*
* Don't run program; rather, log what would be run.
*/
static int test16(const void *unused G_GNUC_UNUSED)
{
virCommandPtr cmd = virCommandNew("true");
char *outactual = NULL;
const char *outexpect = "A=B C='D E' true F 'G H'";
int ret = -1;
int fd = -1;
virCommandAddEnvPair(cmd, "A", "B");
virCommandAddEnvPair(cmd, "C", "D E");
virCommandAddArg(cmd, "F");
virCommandAddArg(cmd, "G H");
if ((outactual = virCommandToString(cmd, false)) == NULL) {
printf("Cannot convert to string: %s\n", virGetLastErrorMessage());
goto cleanup;
}
if ((fd = open(abs_builddir "/commandhelper.log",
O_CREAT | O_TRUNC | O_WRONLY, 0600)) < 0) {
printf("Cannot open log file: %s\n", g_strerror(errno));
goto cleanup;
}
virCommandWriteArgLog(cmd, fd);
if (VIR_CLOSE(fd) < 0) {
printf("Cannot close log file: %s\n", g_strerror(errno));
goto cleanup;
}
if (STRNEQ(outactual, outexpect)) {
virTestDifference(stderr, outexpect, outactual);
goto cleanup;
}
ret = checkoutput("test16", NULL);
cleanup:
virCommandFree(cmd);
VIR_FORCE_CLOSE(fd);
VIR_FREE(outactual);
return ret;
}
/*
* Test string handling when no output is present.
*/
static int test17(const void *unused G_GNUC_UNUSED)
{
virCommandPtr cmd = virCommandNew("true");
int ret = -1;
char *outbuf;
char *errbuf = NULL;
virCommandSetOutputBuffer(cmd, &outbuf);
if (outbuf != NULL) {
puts("buffer not sanitized at registration");
goto cleanup;
}
if (virCommandRun(cmd, NULL) < 0) {
printf("Cannot run child %s\n", virGetLastErrorMessage());
goto cleanup;
}
sa_assert(outbuf);
if (*outbuf) {
puts("output buffer is not an allocated empty string");
goto cleanup;
}
VIR_FREE(outbuf);
outbuf = g_strdup("should not be leaked");
virCommandSetErrorBuffer(cmd, &errbuf);
if (errbuf != NULL) {
puts("buffer not sanitized at registration");
goto cleanup;
}
if (virCommandRun(cmd, NULL) < 0) {
printf("Cannot run child %s\n", virGetLastErrorMessage());
goto cleanup;
}
if (*outbuf || *errbuf) {
puts("output buffers are not allocated empty strings");
goto cleanup;
}
ret = 0;
cleanup:
virCommandFree(cmd);
VIR_FREE(outbuf);
VIR_FREE(errbuf);
return ret;
}
/*
* Run long-running daemon, to ensure no hang.
*/
static int test18(const void *unused G_GNUC_UNUSED)
{
virCommandPtr cmd = virCommandNewArgList("sleep", "100", NULL);
char *pidfile = virPidFileBuildPath(abs_builddir, "commandhelper");
pid_t pid;
int ret = -1;
if (!pidfile)
goto cleanup;
virCommandSetPidFile(cmd, pidfile);
virCommandDaemonize(cmd);
alarm(5);
if (virCommandRun(cmd, NULL) < 0) {
printf("Cannot run child %s\n", virGetLastErrorMessage());
goto cleanup;
}
alarm(0);
if (virPidFileRead(abs_builddir, "commandhelper", &pid) < 0) {
printf("cannot read pidfile\n");
goto cleanup;
}
virCommandFree(cmd);
cmd = NULL;
if (kill(pid, 0) != 0) {
printf("daemon should still be running\n");
goto cleanup;
}
while (kill(pid, SIGINT) != -1)
g_usleep(100*1000);
ret = 0;
cleanup:
virCommandFree(cmd);
if (pidfile)
unlink(pidfile);
VIR_FREE(pidfile);
return ret;
}
/*
* Asynchronously run long-running daemon, to ensure no hang.
*/
static int test19(const void *unused G_GNUC_UNUSED)
{
virCommandPtr cmd = virCommandNewArgList("sleep", "100", NULL);
pid_t pid;
int ret = -1;
alarm(5);
if (virCommandRunAsync(cmd, &pid) < 0) {
printf("Cannot run child %s\n", virGetLastErrorMessage());
goto cleanup;
}
if (kill(pid, 0) != 0) {
printf("Child should still be running");
goto cleanup;
}
virCommandAbort(cmd);
if (kill(pid, 0) == 0) {
printf("Child should be aborted");
goto cleanup;
}
alarm(0);
ret = 0;
cleanup:
virCommandFree(cmd);
return ret;
}
/*
* Run program, no args, inherit all ENV, keep CWD.
* Ignore huge stdin data, to provoke SIGPIPE or EPIPE in parent.
*/
static int test20(const void *unused G_GNUC_UNUSED)
{
virCommandPtr cmd = virCommandNewArgList(abs_builddir "/commandhelper",
"--close-stdin", NULL);
char *buf;
int ret = -1;
struct sigaction sig_action;
sig_action.sa_handler = SIG_IGN;
sig_action.sa_flags = 0;
sigemptyset(&sig_action.sa_mask);
sigaction(SIGPIPE, &sig_action, NULL);
buf = g_strdup_printf("1\n%100000d\n", 2);
virCommandSetInputBuffer(cmd, buf);
if (virCommandRun(cmd, NULL) < 0) {
printf("Cannot run child %s\n", virGetLastErrorMessage());
goto cleanup;
}
ret = checkoutput("test20", NULL);
cleanup:
virCommandFree(cmd);
VIR_FREE(buf);
return ret;
}
static const char *const newenv[] = {
"PATH=/usr/bin:/bin",
"HOSTNAME=test",
"LANG=C",
"HOME=/home/test",
"USER=test",
"LOGNAME=test",
"TMPDIR=/tmp",
"DISPLAY=:0.0",
NULL
};
static int test21(const void *unused G_GNUC_UNUSED)
{
virCommandPtr cmd = virCommandNew(abs_builddir "/commandhelper");
int ret = -1;
const char *wrbuf = "Hello world\n";
char *outbuf = NULL, *errbuf = NULL;
const char *outbufExpected = "BEGIN STDOUT\n"
"Hello world\n"
"END STDOUT\n";
const char *errbufExpected = "BEGIN STDERR\n"
"Hello world\n"
"END STDERR\n";
virCommandSetInputBuffer(cmd, wrbuf);
virCommandSetOutputBuffer(cmd, &outbuf);
virCommandSetErrorBuffer(cmd, &errbuf);
virCommandDoAsyncIO(cmd);
if (virCommandRunAsync(cmd, NULL) < 0) {
printf("Cannot run child %s\n", virGetLastErrorMessage());
goto cleanup;
}
if (virCommandWait(cmd, NULL) < 0)
goto cleanup;
if (virTestGetVerbose())
printf("STDOUT:%s\nSTDERR:%s\n", NULLSTR(outbuf), NULLSTR(errbuf));
if (STRNEQ_NULLABLE(outbuf, outbufExpected)) {
virTestDifference(stderr, outbufExpected, outbuf);
goto cleanup;
}
if (STRNEQ_NULLABLE(errbuf, errbufExpected)) {
virTestDifference(stderr, errbufExpected, errbuf);
goto cleanup;
}
ret = checkoutput("test21", NULL);
cleanup:
VIR_FREE(outbuf);
VIR_FREE(errbuf);
virCommandFree(cmd);
return ret;
}
static int
test22(const void *unused G_GNUC_UNUSED)
{
int ret = -1;
virCommandPtr cmd;
int status = -1;
cmd = virCommandNewArgList("/bin/sh", "-c", "exit 3", NULL);
if (virCommandRun(cmd, &status) < 0) {
printf("Cannot run child %s\n", virGetLastErrorMessage());
goto cleanup;
}
if (status != 3) {
printf("Unexpected status %d\n", status);
goto cleanup;
}
virCommandRawStatus(cmd);
if (virCommandRun(cmd, &status) < 0) {
printf("Cannot run child %s\n", virGetLastErrorMessage());
goto cleanup;
}
if (!WIFEXITED(status) || WEXITSTATUS(status) != 3) {
printf("Unexpected status %d\n", status);
goto cleanup;
}
virCommandFree(cmd);
cmd = virCommandNewArgList("/bin/sh", "-c", "kill -9 $$", NULL);
if (virCommandRun(cmd, &status) == 0) {
printf("Death by signal not detected, status %d\n", status);
goto cleanup;
}
virCommandRawStatus(cmd);
if (virCommandRun(cmd, &status) < 0) {
printf("Cannot run child %s\n", virGetLastErrorMessage());
goto cleanup;
}
if (!WIFSIGNALED(status) || WTERMSIG(status) != SIGKILL) {
printf("Unexpected status %d\n", status);
goto cleanup;
}
ret = 0;
cleanup:
virCommandFree(cmd);
return ret;
}
static int
test23(const void *unused G_GNUC_UNUSED)
{
/* Not strictly a virCommand test, but this is the easiest place
* to test this lower-level interface. It takes a double fork to
* test virProcessExitWithStatus. */
int status = -1;
pid_t pid;
if ((pid = virFork()) < 0)
return -1;
if (pid == 0) {
if ((pid = virFork()) < 0)
_exit(EXIT_FAILURE);
if (pid == 0)
_exit(42);
if (virProcessWait(pid, &status, true) < 0)
_exit(EXIT_FAILURE);
virProcessExitWithStatus(status);
_exit(EXIT_FAILURE);
}
if (virProcessWait(pid, &status, true) < 0)
return -1;
if (!WIFEXITED(status) || WEXITSTATUS(status) != 42) {
printf("Unexpected status %d\n", status);
return -1;
}
if ((pid = virFork()) < 0)
return -1;
if (pid == 0) {
if ((pid = virFork()) < 0)
_exit(EXIT_FAILURE);
if (pid == 0) {
raise(SIGKILL);
_exit(EXIT_FAILURE);
}
if (virProcessWait(pid, &status, true) < 0)
_exit(EXIT_FAILURE);
virProcessExitWithStatus(status);
_exit(EXIT_FAILURE);
}
if (virProcessWait(pid, &status, true) < 0)
return -1;
if (!WIFSIGNALED(status) || WTERMSIG(status) != SIGKILL) {
printf("Unexpected status %d\n", status);
return -1;
}
return 0;
}
static int test25(const void *unused G_GNUC_UNUSED)
{
int ret = -1;
int pipeFD[2] = { -1, -1};
int rv = 0;
ssize_t tries = 100;
pid_t pid;
gid_t *groups = NULL;
int ngroups;
virCommandPtr cmd = virCommandNew("some/nonexistent/binary");
if (pipe(pipeFD) < 0) {
fprintf(stderr, "Unable to create pipe\n");
goto cleanup;
}
if (virSetNonBlock(pipeFD[0]) < 0) {
fprintf(stderr, "Unable to make read end of pipe nonblocking\n");
goto cleanup;
}
if ((ngroups = virGetGroupList(virCommandGetUID(cmd), virCommandGetGID(cmd),
&groups)) < 0)
goto cleanup;
/* Now, fork and try to exec a nonexistent binary. */
pid = virFork();
if (pid < 0) {
fprintf(stderr, "Unable to spawn child\n");
goto cleanup;
}
if (pid == 0) {
/* Child */
rv = virCommandExec(cmd, groups, ngroups);
if (safewrite(pipeFD[1], &rv, sizeof(rv)) < 0)
fprintf(stderr, "Unable to write to pipe\n");
_exit(EXIT_FAILURE);
}
/* Parent */
while (--tries) {
if (saferead(pipeFD[0], &rv, sizeof(rv)) < 0) {
if (errno != EWOULDBLOCK) {
fprintf(stderr, "Unable to read from pipe\n");
goto cleanup;
}
g_usleep(10 * 1000);
} else {
break;
}
}
if (!tries) {
fprintf(stderr, "Child hasn't returned anything\n");
goto cleanup;
}
if (rv >= 0) {
fprintf(stderr, "Child should have returned an error\n");
goto cleanup;
}
ret = 0;
cleanup:
VIR_FORCE_CLOSE(pipeFD[0]);
VIR_FORCE_CLOSE(pipeFD[1]);
VIR_FREE(groups);
virCommandFree(cmd);
return ret;
}
/*
* Don't run program; rather, log what would be run.
*/
static int test26(const void *unused G_GNUC_UNUSED)
{
virCommandPtr cmd = virCommandNew("true");
char *outactual = NULL;
const char *outexpect =
"A=B \\\n"
"C='D E' \\\n"
"true \\\n"
"--foo bar \\\n"
"--oooh \\\n"
"-f \\\n"
"--wizz 'eek eek' \\\n"
"-w \\\n"
"-z \\\n"
"-l \\\n"
"--mmm flash \\\n"
"bang \\\n"
"wallop";
int ret = -1;
int fd = -1;
virCommandAddEnvPair(cmd, "A", "B");
virCommandAddEnvPair(cmd, "C", "D E");
virCommandAddArgList(cmd, "--foo", "bar", "--oooh", "-f",
"--wizz", "eek eek", "-w", "-z", "-l",
"--mmm", "flash", "bang", "wallop",
NULL);
if ((outactual = virCommandToString(cmd, true)) == NULL) {
printf("Cannot convert to string: %s\n", virGetLastErrorMessage());
goto cleanup;
}
if ((fd = open(abs_builddir "/commandhelper.log",
O_CREAT | O_TRUNC | O_WRONLY, 0600)) < 0) {
printf("Cannot open log file: %s\n", g_strerror(errno));
goto cleanup;
}
virCommandWriteArgLog(cmd, fd);
if (VIR_CLOSE(fd) < 0) {
printf("Cannot close log file: %s\n", g_strerror(errno));
goto cleanup;
}
if (STRNEQ(outactual, outexpect)) {
virTestDifference(stderr, outexpect, outactual);
goto cleanup;
}
ret = checkoutput("test26", NULL);
cleanup:
virCommandFree(cmd);
VIR_FORCE_CLOSE(fd);
VIR_FREE(outactual);
return ret;
}
static int test27(const void *unused G_GNUC_UNUSED)
{
virCommandPtr cmd = virCommandNew(abs_builddir "/commandhelper");
int pipe1[2];
int pipe2[2];
int ret = -1;
size_t buflen = 1024 * 128;
char *buffer0 = NULL;
char *buffer1 = NULL;
char *buffer2 = NULL;
char *outactual = NULL;
char *erractual = NULL;
char *outexpect = NULL;
# define TEST27_OUTEXPECT_TEMP "BEGIN STDOUT\n" \
"%s%s%s" \
"END STDOUT\n"
char *errexpect = NULL;
# define TEST27_ERREXPECT_TEMP "BEGIN STDERR\n" \
"%s%s%s" \
"END STDERR\n"
if (VIR_ALLOC_N(buffer0, buflen) < 0 ||
VIR_ALLOC_N(buffer1, buflen) < 0 ||
VIR_ALLOC_N(buffer2, buflen) < 0)
goto cleanup;
memset(buffer0, 'H', buflen - 2);
buffer0[buflen - 2] = '\n';
buffer0[buflen - 1] = 0;
memset(buffer1, '1', buflen - 2);
buffer1[buflen - 2] = '\n';
buffer1[buflen - 1] = 0;
memset(buffer2, '2', buflen - 2);
buffer2[buflen - 2] = '\n';
buffer2[buflen - 1] = 0;
outexpect = g_strdup_printf(TEST27_OUTEXPECT_TEMP,
buffer0, buffer1, buffer2);
errexpect = g_strdup_printf(TEST27_ERREXPECT_TEMP,
buffer0, buffer1, buffer2);
if (pipe(pipe1) < 0 || pipe(pipe2) < 0) {
printf("Could not create pipe: %s\n", g_strerror(errno));
goto cleanup;
}
if (virCommandSetSendBuffer(cmd, pipe1[1],
(unsigned char *)buffer1, buflen - 1) < 0 ||
virCommandSetSendBuffer(cmd, pipe2[1],
(unsigned char *)buffer2, buflen - 1) < 0) {
printf("Could not set send buffers\n");
goto cleanup;
}
pipe1[1] = 0;
pipe2[1] = 0;
buffer1 = NULL;
buffer2 = NULL;
virCommandAddArg(cmd, "--readfd");
virCommandAddArgFormat(cmd, "%d", pipe1[0]);
virCommandPassFD(cmd, pipe1[0], 0);
virCommandAddArg(cmd, "--readfd");
virCommandAddArgFormat(cmd, "%d", pipe2[0]);
virCommandPassFD(cmd, pipe2[0], 0);
virCommandSetInputBuffer(cmd, buffer0);
virCommandSetOutputBuffer(cmd, &outactual);
virCommandSetErrorBuffer(cmd, &erractual);
if (virCommandRun(cmd, NULL) < 0) {
printf("Cannot run child %s\n", virGetLastErrorMessage());
goto cleanup;
}
if (!outactual || !erractual)
goto cleanup;
if (STRNEQ(outactual, outexpect)) {
virTestDifference(stderr, outexpect, outactual);
goto cleanup;
}
if (STRNEQ(erractual, errexpect)) {
virTestDifference(stderr, errexpect, erractual);
goto cleanup;
}
if (checkoutput("test27", NULL) < 0)
goto cleanup;
ret = 0;
cleanup:
virCommandFree(cmd);
VIR_FORCE_CLOSE(pipe1[0]);
VIR_FORCE_CLOSE(pipe2[0]);
VIR_FORCE_CLOSE(pipe1[1]);
VIR_FORCE_CLOSE(pipe2[1]);
VIR_FREE(buffer0);
VIR_FREE(buffer1);
VIR_FREE(buffer2);
VIR_FREE(outactual);
VIR_FREE(erractual);
VIR_FREE(outexpect);
VIR_FREE(errexpect);
return ret;
}
static void virCommandThreadWorker(void *opaque)
{
virCommandTestDataPtr test = opaque;
virMutexLock(&test->lock);
while (!test->quit) {
virMutexUnlock(&test->lock);
if (virEventRunDefaultImpl() < 0) {
test->quit = true;
break;
}
virMutexLock(&test->lock);
}
test->running = false;
virMutexUnlock(&test->lock);
return;
}
static void
virCommandTestFreeTimer(int timer G_GNUC_UNUSED,
void *opaque G_GNUC_UNUSED)
{
/* nothing to be done here */
}
static int
mymain(void)
{
int ret = 0;
int fd;
virCommandTestDataPtr test = NULL;
int timer = -1;
int virinitret;
if (chdir("/tmp") < 0)
return EXIT_FAILURE;
umask(022);
setpgid(0, 0);
ignore_value(setsid());
/* Our test expects particular fd values; to get that, we must not
* leak fds that we inherited from a lazy parent. At the same
* time, virInitialize may open some fds (perhaps via third-party
* libraries that it uses), and we must not kill off an fd that
* this process opens as it might break expectations of a
* pthread_atfork handler, as well as interfering with our tests
* trying to ensure we aren't leaking to our children. The
* solution is to do things in two phases - reserve the fds we
* want by overwriting any externally inherited fds, then
* initialize, then clear the slots for testing. */
if ((fd = open("/dev/null", O_RDONLY)) < 0 ||
dup2(fd, 3) < 0 ||
dup2(fd, 4) < 0 ||
dup2(fd, 5) < 0 ||
dup2(fd, 6) < 0 ||
dup2(fd, 7) < 0 ||
dup2(fd, 8) < 0 ||
(fd > 8 && VIR_CLOSE(fd) < 0)) {
VIR_FORCE_CLOSE(fd);
return EXIT_FAILURE;
}
/* Prime the debug/verbose settings from the env vars,
* since we're about to reset 'environ' */
ignore_value(virTestGetDebug());
ignore_value(virTestGetVerbose());
/* Make sure to not leak fd's */
virinitret = virInitialize();
/* Phase two of killing interfering fds; see above. */
/* coverity[overwrite_var] - silence the obvious */
fd = 3;
VIR_FORCE_CLOSE(fd);
fd = 4;
VIR_FORCE_CLOSE(fd);
fd = 5;
VIR_FORCE_CLOSE(fd);
fd = 6;
VIR_FORCE_CLOSE(fd);
fd = 7;
VIR_FORCE_CLOSE(fd);
fd = 8;
VIR_FORCE_CLOSE(fd);
if (virinitret < 0)
return EXIT_FAILURE;
virEventRegisterDefaultImpl();
if (VIR_ALLOC(test) < 0)
goto cleanup;
if (virMutexInit(&test->lock) < 0) {
printf("Unable to init mutex: %d\n", errno);
goto cleanup;
}
virMutexLock(&test->lock);
if (virThreadCreate(&test->thread,
true,
virCommandThreadWorker,
test) < 0) {
virMutexUnlock(&test->lock);
goto cleanup;
}
test->running = true;
virMutexUnlock(&test->lock);
environ = (char **)newenv;
# define DO_TEST(NAME) \
if (virTestRun("Command Exec " #NAME " test", \
NAME, NULL) < 0) \
ret = -1
DO_TEST(test0);
DO_TEST(test1);
DO_TEST(test2);
DO_TEST(test3);
DO_TEST(test4);
DO_TEST(test5);
DO_TEST(test6);
DO_TEST(test7);
DO_TEST(test8);
DO_TEST(test9);
DO_TEST(test10);
DO_TEST(test11);
DO_TEST(test12);
DO_TEST(test13);
DO_TEST(test14);
DO_TEST(test15);
DO_TEST(test16);
DO_TEST(test17);
DO_TEST(test18);
DO_TEST(test19);
DO_TEST(test20);
DO_TEST(test21);
DO_TEST(test22);
DO_TEST(test23);
DO_TEST(test25);
DO_TEST(test26);
DO_TEST(test27);
virMutexLock(&test->lock);
if (test->running) {
test->quit = true;
/* HACK: Add a dummy timeout to break event loop */
timer = virEventAddTimeout(0, virCommandTestFreeTimer, NULL, NULL);
}
virMutexUnlock(&test->lock);
cleanup:
if (test->running)
virThreadJoin(&test->thread);
if (timer != -1)
virEventRemoveTimeout(timer);
virMutexDestroy(&test->lock);
VIR_FREE(test);
return ret == 0 ? EXIT_SUCCESS : EXIT_FAILURE;
}
VIR_TEST_MAIN(mymain)
#endif /* !WIN32 */
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