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libvirt/tests/qemuxmlnstest.c
Osier Yang 3a6204cbbd qemu: Add callback struct for qemuBuildCommandLine 
Since 0d70656afd, it starts to access the sysfs files to build
the qemu command line (by virSCSIDeviceGetSgName, which is to find
out the scsi generic device name by adpater🚌target:unit), there
is no way to work around, qemu wants to see the scsi generic device
like "/dev/sg6" anyway.

And there might be other places which need to access sysfs files
when building qemu command line in future.

Instead of increasing the arguments of qemuBuildCommandLine, this
introduces a new callback for qemuBuildCommandLine, and thus tests
can register their own callbacks for sysfs test input files accessing.

* src/qemu/qemu_command.h: (New callback struct
                            qemuBuildCommandLineCallbacks;
                            extern buildCommandLineCallbacks)
* src/qemu/qemu_command.c: (wire up the callback struct)
* src/qemu/qemu_driver.c: (Use the new syntax of qemuBuildCommandLine)
* src/qemu/qemu_hotplug.c: Likewise
* src/qemu/qemu_process.c: Likewise
* tests/testutilsqemu.[ch]: (Helper testSCSIDeviceGetSgName;
                             callback struct testCallbacks;)
* tests/qemuxml2argvtest.c: (Use testCallbacks)
* src/tests/qemuxmlnstest.c: (Like above)
2013-05-20 20:14:19 +08:00

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#include <config.h>
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <string.h>
#include <sys/types.h>
#include <fcntl.h>
#include "testutils.h"
#ifdef WITH_QEMU
# include "internal.h"
# include "qemu/qemu_capabilities.h"
# include "qemu/qemu_command.h"
# include "qemu/qemu_domain.h"
# include "datatypes.h"
# include "cpu/cpu_map.h"
# include "testutilsqemu.h"
# include "virstring.h"
# define VIR_FROM_THIS VIR_FROM_QEMU
static const char *abs_top_srcdir;
static virQEMUDriver driver;
static int testCompareXMLToArgvFiles(const char *xml,
const char *cmdline,
virQEMUCapsPtr extraFlags,
const char *migrateFrom,
int migrateFd,
bool json,
bool expectError)
{
char *expectargv = NULL;
int len;
char *actualargv = NULL;
int ret = -1;
virDomainDefPtr vmdef = NULL;
virDomainChrSourceDef monitor_chr;
virConnectPtr conn;
char *log = NULL;
char *emulator = NULL;
virCommandPtr cmd = NULL;
if (!(conn = virGetConnect()))
goto fail;
len = virtTestLoadFile(cmdline, &expectargv);
if (len < 0)
goto fail;
if (len && expectargv[len - 1] == '\n')
expectargv[len - 1] = '\0';
if (!(vmdef = virDomainDefParseFile(xml, driver.caps, driver.xmlopt,
QEMU_EXPECTED_VIRT_TYPES,
VIR_DOMAIN_XML_INACTIVE)))
goto fail;
/*
* For test purposes, we may want to fake emulator's output by providing
* our own script instead of a real emulator. For this to work we need to
* specify a relative path in <emulator/> element, which, however, is not
* allowed by RelaxNG schema for domain XML. To work around it we add an
* extra '/' at the beginning of relative emulator path so that it looks
* like, e.g., "/./qemu.sh" or "/../emulator/qemu.sh" instead of
* "./qemu.sh" or "../emulator/qemu.sh" respectively. The following code
* detects such paths, strips the extra '/' and makes the path absolute.
*/
if (vmdef->emulator && STRPREFIX(vmdef->emulator, "/.")) {
if (VIR_STRDUP(emulator, vmdef->emulator + 1) < 0)
goto fail;
VIR_FREE(vmdef->emulator);
vmdef->emulator = NULL;
if (virAsprintf(&vmdef->emulator, "%s/qemuxml2argvdata/%s",
abs_srcdir, emulator) < 0)
goto fail;
}
if (virQEMUCapsGet(extraFlags, QEMU_CAPS_DOMID))
vmdef->id = 6;
else
vmdef->id = -1;
memset(&monitor_chr, 0, sizeof(monitor_chr));
monitor_chr.type = VIR_DOMAIN_CHR_TYPE_UNIX;
monitor_chr.data.nix.path = (char *)"/tmp/test-monitor";
monitor_chr.data.nix.listen = true;
virQEMUCapsSetList(extraFlags,
QEMU_CAPS_VNC_COLON,
QEMU_CAPS_NO_REBOOT,
QEMU_CAPS_NO_ACPI,
QEMU_CAPS_LAST);
if (virQEMUCapsGet(extraFlags, QEMU_CAPS_DEVICE))
qemuDomainAssignAddresses(vmdef, extraFlags, NULL);
log = virtTestLogContentAndReset();
VIR_FREE(log);
virResetLastError();
if (vmdef->os.arch == VIR_ARCH_X86_64 ||
vmdef->os.arch == VIR_ARCH_I686) {
virQEMUCapsSet(extraFlags, QEMU_CAPS_PCI_MULTIBUS);
}
if (qemuAssignDeviceAliases(vmdef, extraFlags) < 0)
goto fail;
if (!(cmd = qemuBuildCommandLine(conn, &driver,
vmdef, &monitor_chr, json, extraFlags,
migrateFrom, migrateFd, NULL,
VIR_NETDEV_VPORT_PROFILE_OP_NO_OP,
&testCallbacks)))
goto fail;
if (!!virGetLastError() != expectError) {
if (virTestGetDebug() && (log = virtTestLogContentAndReset()))
fprintf(stderr, "\n%s", log);
goto fail;
}
if (expectError) {
/* need to suppress the errors */
virResetLastError();
}
if (!(actualargv = virCommandToString(cmd)))
goto fail;
if (emulator) {
/* Skip the abs_srcdir portion of replacement emulator. */
char *start_skip = strstr(actualargv, abs_srcdir);
char *end_skip = strstr(actualargv, emulator);
if (!start_skip || !end_skip)
goto fail;
memmove(start_skip, end_skip, strlen(end_skip) + 1);
}
if (STRNEQ(expectargv, actualargv)) {
virtTestDifference(stderr, expectargv, actualargv);
goto fail;
}
ret = 0;
fail:
VIR_FREE(log);
VIR_FREE(emulator);
VIR_FREE(expectargv);
VIR_FREE(actualargv);
virCommandFree(cmd);
virDomainDefFree(vmdef);
virObjectUnref(conn);
return ret;
}
struct testInfo {
const char *name;
virQEMUCapsPtr extraFlags;
const char *migrateFrom;
int migrateFd;
bool json;
bool expectError;
};
static int
testCompareXMLToArgvHelper(const void *data)
{
int result = -1;
const struct testInfo *info = data;
char *xml = NULL;
char *args = NULL;
if (virAsprintf(&xml, "%s/qemuxmlnsdata/qemuxmlns-%s.xml",
abs_srcdir, info->name) < 0 ||
virAsprintf(&args, "%s/qemuxmlnsdata/qemuxmlns-%s.args",
abs_srcdir, info->name) < 0)
goto cleanup;
result = testCompareXMLToArgvFiles(xml, args, info->extraFlags,
info->migrateFrom, info->migrateFd,
info->json, info->expectError);
cleanup:
VIR_FREE(xml);
VIR_FREE(args);
return result;
}
static int
mymain(void)
{
int ret = 0;
char *map = NULL;
bool json = false;
abs_top_srcdir = getenv("abs_top_srcdir");
if (!abs_top_srcdir)
abs_top_srcdir = "..";
driver.config = virQEMUDriverConfigNew(false);
if ((driver.caps = testQemuCapsInit()) == NULL)
return EXIT_FAILURE;
if (!(driver.xmlopt = virQEMUDriverCreateXMLConf(&driver)))
return EXIT_FAILURE;
if (virAsprintf(&map, "%s/src/cpu/cpu_map.xml", abs_top_srcdir) < 0 ||
cpuMapOverride(map) < 0) {
VIR_FREE(map);
return EXIT_FAILURE;
}
# define DO_TEST_FULL(name, migrateFrom, migrateFd, expectError, ...) \
do { \
struct testInfo info = { \
name, NULL, migrateFrom, migrateFd, json, expectError \
}; \
if (!(info.extraFlags = virQEMUCapsNew())) \
return EXIT_FAILURE; \
virQEMUCapsSetList(info.extraFlags, __VA_ARGS__, QEMU_CAPS_LAST);\
if (virtTestRun("QEMU XML-2-ARGV " name, \
1, testCompareXMLToArgvHelper, &info) < 0) \
ret = -1; \
virObjectUnref(info.extraFlags); \
} while (0)
# define DO_TEST(name, expectError, ...) \
DO_TEST_FULL(name, NULL, -1, expectError, __VA_ARGS__)
# define NONE QEMU_CAPS_LAST
/* Unset or set all envvars here that are copied in qemudBuildCommandLine
* using ADD_ENV_COPY, otherwise these tests may fail due to unexpected
* values for these envvars */
setenv("PATH", "/bin", 1);
setenv("USER", "test", 1);
setenv("LOGNAME", "test", 1);
setenv("HOME", "/home/test", 1);
unsetenv("TMPDIR");
unsetenv("LD_PRELOAD");
unsetenv("LD_LIBRARY_PATH");
unsetenv("QEMU_AUDIO_DRV");
unsetenv("SDL_AUDIODRIVER");
DO_TEST("qemu-ns-domain", false, NONE);
DO_TEST("qemu-ns-domain-ns0", false, NONE);
DO_TEST("qemu-ns-domain-commandline", false, NONE);
DO_TEST("qemu-ns-domain-commandline-ns0", false, NONE);
DO_TEST("qemu-ns-commandline", false, NONE);
DO_TEST("qemu-ns-commandline-ns0", false, NONE);
DO_TEST("qemu-ns-commandline-ns1", false, NONE);
virObjectUnref(driver.config);
virObjectUnref(driver.caps);
virObjectUnref(driver.xmlopt);
VIR_FREE(map);
return ret==0 ? EXIT_SUCCESS : EXIT_FAILURE;
}
VIRT_TEST_MAIN(mymain)
#else
int main(void)
{
return EXIT_AM_SKIP;
}
#endif /* WITH_QEMU */
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