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libvirt
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libvirt/tests/testutilsqemu.c

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#include <config.h>
#ifdef WITH_QEMU
# include "testutilsqemu.h"
# include "testutilshostcpus.h"
# include "testutils.h"
# include "viralloc.h"
# include "cpu_conf.h"
# include "qemu/qemu_driver.h"
# include "qemu/qemu_domain.h"
# define LIBVIRT_QEMU_CAPSPRIV_H_ALLOW
# include "qemu/qemu_capspriv.h"
# include "virstring.h"
# include "virfilecache.h"
# include "virutil.h"
# define VIR_FROM_THIS VIR_FROM_QEMU
virCPUDefPtr cpuDefault;
virCPUDefPtr cpuHaswell;
virCPUDefPtr cpuPower8;
virCPUDefPtr cpuPower9;
static const char *qemu_emulators[VIR_ARCH_LAST] = {
[VIR_ARCH_I686] = "/usr/bin/qemu-system-i386",
[VIR_ARCH_X86_64] = "/usr/bin/qemu-system-x86_64",
[VIR_ARCH_AARCH64] = "/usr/bin/qemu-system-aarch64",
[VIR_ARCH_ARMV7L] = "/usr/bin/qemu-system-arm",
[VIR_ARCH_PPC64] = "/usr/bin/qemu-system-ppc64",
[VIR_ARCH_PPC] = "/usr/bin/qemu-system-ppc",
[VIR_ARCH_RISCV32] = "/usr/bin/qemu-system-riscv32",
[VIR_ARCH_RISCV64] = "/usr/bin/qemu-system-riscv64",
[VIR_ARCH_S390X] = "/usr/bin/qemu-system-s390x"
};
static const virArch arch_alias[VIR_ARCH_LAST] = {
[VIR_ARCH_PPC64LE] = VIR_ARCH_PPC64,
[VIR_ARCH_ARMV6L] = VIR_ARCH_ARMV7L,
};
static const char *const i386_machines[] = {
"pc", "isapc", NULL
};
/**
* Oldest supported qemu-1.5 supports machine types back to pc-0.10.
*/
static const char *const x86_64_machines[] = {
"pc", "isapc", "q35",
"pc-1.0", "pc-1.2",
"pc-i440fx-1.4", "pc-i440fx-2.1", "pc-i440fx-2.3", "pc-i440fx-2.5",
"pc-i440fx-2.6", "pc-i440fx-2.9", "pc-i440fx-2.12",
"pc-q35-2.3", "pc-q35-2.4", "pc-q35-2.5", "pc-q35-2.7", "pc-q35-2.10",
NULL
};
static const char *const aarch64_machines[] = {
"virt", "virt-2.6", "versatilepb", NULL
};
static const char *const arm_machines[] = {
"vexpress-a9", "vexpress-a15", "versatilepb", "virt", NULL
};
static const char *const ppc64_machines[] = {
"pseries", NULL
};
static const char *const ppc_machines[] = {
"g3beige", "mac99", "prep", "ppce500", NULL
};
static const char *const riscv32_machines[] = {
"spike_v1.10", "spike_v1.9.1", "sifive_e", "virt", "sifive_u", NULL
};
static const char *const riscv64_machines[] = {
"spike_v1.10", "spike_v1.9.1", "sifive_e", "virt", "sifive_u", NULL
};
static const char *const s390x_machines[] = {
"s390-virtio", "s390-ccw-virtio", "s390-ccw", NULL
};
static const char *const *qemu_machines[VIR_ARCH_LAST] = {
[VIR_ARCH_I686] = i386_machines,
[VIR_ARCH_X86_64] = x86_64_machines,
[VIR_ARCH_AARCH64] = aarch64_machines,
[VIR_ARCH_ARMV7L] = arm_machines,
[VIR_ARCH_PPC64] = ppc64_machines,
[VIR_ARCH_PPC] = ppc_machines,
[VIR_ARCH_RISCV32] = riscv32_machines,
[VIR_ARCH_RISCV64] = riscv64_machines,
[VIR_ARCH_S390X] = s390x_machines,
};
static const char *const *kvm_machines[VIR_ARCH_LAST] = {
[VIR_ARCH_I686] = i386_machines,
[VIR_ARCH_X86_64] = x86_64_machines,
[VIR_ARCH_AARCH64] = aarch64_machines,
[VIR_ARCH_ARMV7L] = arm_machines,
[VIR_ARCH_PPC64] = ppc64_machines,
[VIR_ARCH_PPC] = ppc_machines,
[VIR_ARCH_RISCV32] = riscv32_machines,
[VIR_ARCH_RISCV64] = riscv64_machines,
[VIR_ARCH_S390X] = s390x_machines,
};
char *
virFindFileInPath(const char *file)
{
if (g_str_has_prefix(file, "qemu-system") ||
g_str_equal(file, "qemu-kvm")) {
return g_strdup_printf("/usr/bin/%s", file);
}
/* Nothing in tests should be relying on real files
* in host OS, so we return NULL to try to force
* an error in such a case
*/
return NULL;
}
virCapsHostNUMAPtr
virCapabilitiesHostNUMANewHost(void)
{
/*
* Build a NUMA topology with cell_id (NUMA node id
* being 3(0 + 3),4(1 + 3), 5 and 6
*/
return virTestCapsBuildNUMATopology(3);
}
static int
testQemuAddGuest(virCapsPtr caps,
virArch arch)
{
size_t nmachines;
virCapsGuestMachinePtr *machines = NULL;
virCapsGuestPtr guest;
virArch emu_arch = arch;
if (arch_alias[arch] != VIR_ARCH_NONE)
emu_arch = arch_alias[arch];
if (qemu_emulators[emu_arch] == NULL)
return 0;
nmachines = g_strv_length((gchar **)qemu_machines[emu_arch]);
machines = virCapabilitiesAllocMachines(qemu_machines[emu_arch],
nmachines);
if (machines == NULL)
goto error;
if (!(guest = virCapabilitiesAddGuest(caps,
VIR_DOMAIN_OSTYPE_HVM,
arch,
qemu_emulators[emu_arch],
NULL,
nmachines,
machines)))
goto error;
machines = NULL;
nmachines = 0;
if (arch == VIR_ARCH_I686 ||
arch == VIR_ARCH_X86_64)
virCapabilitiesAddGuestFeature(guest, VIR_CAPS_GUEST_FEATURE_TYPE_CPUSELECTION);
if (!virCapabilitiesAddGuestDomain(guest,
VIR_DOMAIN_VIRT_QEMU,
NULL,
NULL,
0,
NULL))
goto error;
nmachines = g_strv_length((char **)kvm_machines[emu_arch]);
machines = virCapabilitiesAllocMachines(kvm_machines[emu_arch],
nmachines);
if (machines == NULL)
goto error;
if (!virCapabilitiesAddGuestDomain(guest,
VIR_DOMAIN_VIRT_KVM,
qemu_emulators[emu_arch],
NULL,
nmachines,
machines))
goto error;
return 0;
error:
virCapabilitiesFreeMachines(machines, nmachines);
return -1;
}
virCapsPtr testQemuCapsInit(void)
{
virCapsPtr caps;
size_t i;
if (!(caps = virCapabilitiesNew(VIR_ARCH_X86_64, false, false)))
return NULL;
/* Add dummy 'none' security_driver. This is equal to setting
* security_driver = "none" in qemu.conf. */
if (VIR_ALLOC_N(caps->host.secModels, 1) < 0)
goto cleanup;
caps->host.nsecModels = 1;
caps->host.secModels[0].model = g_strdup("none");
caps->host.secModels[0].doi = g_strdup("0");
if (!(caps->host.numa = virCapabilitiesHostNUMANewHost()))
goto cleanup;
for (i = 0; i < VIR_ARCH_LAST; i++) {
if (testQemuAddGuest(caps, i) < 0)
goto cleanup;
}
if (virTestGetDebug()) {
g_autofree char *caps_str = NULL;
caps_str = virCapabilitiesFormatXML(caps);
if (!caps_str)
goto cleanup;
VIR_TEST_DEBUG("QEMU driver capabilities:\n%s", caps_str);
}
return caps;
cleanup:
caps->host.cpu = NULL;
virObjectUnref(caps);
return NULL;
}
void
qemuTestSetHostArch(virQEMUDriverPtr driver,
virArch arch)
{
if (arch == VIR_ARCH_NONE)
arch = VIR_ARCH_X86_64;
virTestHostArch = arch;
driver->hostarch = virArchFromHost();
driver->caps->host.arch = virArchFromHost();
qemuTestSetHostCPU(driver, arch, NULL);
}
void
qemuTestSetHostCPU(virQEMUDriverPtr driver,
virArch arch,
virCPUDefPtr cpu)
{
if (!cpu) {
if (ARCH_IS_X86(arch))
cpu = cpuDefault;
else if (ARCH_IS_PPC64(arch))
cpu = cpuPower8;
}
g_unsetenv("VIR_TEST_MOCK_FAKE_HOST_CPU");
if (cpu) {
if (cpu->model)
g_setenv("VIR_TEST_MOCK_FAKE_HOST_CPU", cpu->model, TRUE);
}
if (driver) {
if (cpu)
driver->caps->host.arch = cpu->arch;
driver->caps->host.cpu = cpu;
virCPUDefFree(driver->hostcpu);
if (cpu)
virCPUDefRef(cpu);
driver->hostcpu = cpu;
}
}
virQEMUCapsPtr
qemuTestParseCapabilitiesArch(virArch arch,
const char *capsFile)
{
virQEMUCapsPtr qemuCaps = NULL;
g_autofree char *binary = g_strdup_printf("/usr/bin/qemu-system-%s",
virArchToString(arch));
if (!(qemuCaps = virQEMUCapsNewBinary(binary)) ||
virQEMUCapsLoadCache(arch, qemuCaps, capsFile, true) < 0)
goto error;
return qemuCaps;
error:
virObjectUnref(qemuCaps);
return NULL;
}
void qemuTestDriverFree(virQEMUDriver *driver)
{
virMutexDestroy(&driver->lock);
if (driver->config) {
virFileDeleteTree(driver->config->stateDir);
virFileDeleteTree(driver->config->configDir);
}
virObjectUnref(driver->qemuCapsCache);
virObjectUnref(driver->xmlopt);
virObjectUnref(driver->caps);
virObjectUnref(driver->config);
virObjectUnref(driver->securityManager);
}
int qemuTestCapsCacheInsert(virFileCachePtr cache,
virQEMUCapsPtr caps)
{
size_t i, j;
for (i = 0; i < G_N_ELEMENTS(qemu_emulators); i++) {
virQEMUCapsPtr tmpCaps;
if (qemu_emulators[i] == NULL)
continue;
if (caps) {
tmpCaps = virQEMUCapsNewCopy(caps);
} else {
tmpCaps = virQEMUCapsNew();
}
if (!virQEMUCapsHasMachines(tmpCaps)) {
virQEMUCapsSetArch(tmpCaps, i);
for (j = 0; qemu_machines[i][j] != NULL; j++) {
virQEMUCapsAddMachine(tmpCaps,
VIR_DOMAIN_VIRT_QEMU,
qemu_machines[i][j],
NULL,
NULL,
0,
false,
false,
true);
virQEMUCapsSet(tmpCaps, QEMU_CAPS_TCG);
}
for (j = 0; kvm_machines[i][j] != NULL; j++) {
virQEMUCapsAddMachine(tmpCaps,
VIR_DOMAIN_VIRT_KVM,
kvm_machines[i][j],
NULL,
NULL,
0,
false,
false,
true);
virQEMUCapsSet(tmpCaps, QEMU_CAPS_KVM);
}
}
if (virFileCacheInsertData(cache, qemu_emulators[i], tmpCaps) < 0) {
virObjectUnref(tmpCaps);
return -1;
}
}
return 0;
}
# define STATEDIRTEMPLATE abs_builddir "/qemustatedir-XXXXXX"
# define CONFIGDIRTEMPLATE abs_builddir "/qemuconfigdir-XXXXXX"
int qemuTestDriverInit(virQEMUDriver *driver)
{
virSecurityManagerPtr mgr = NULL;
char statedir[] = STATEDIRTEMPLATE;
char configdir[] = CONFIGDIRTEMPLATE;
memset(driver, 0, sizeof(*driver));
if (!(cpuDefault = virCPUDefCopy(&cpuDefaultData)) ||
!(cpuHaswell = virCPUDefCopy(&cpuHaswellData)) ||
!(cpuPower8 = virCPUDefCopy(&cpuPower8Data)) ||
!(cpuPower9 = virCPUDefCopy(&cpuPower9Data)))
return -1;
if (virMutexInit(&driver->lock) < 0)
return -1;
driver->hostarch = virArchFromHost();
driver->config = virQEMUDriverConfigNew(false, NULL);
if (!driver->config)
goto error;
/* Do this early so that qemuTestDriverFree() doesn't see (unlink) the real
* dirs. */
VIR_FREE(driver->config->stateDir);
VIR_FREE(driver->config->configDir);
/* Overwrite some default paths so it's consistent for tests. */
VIR_FREE(driver->config->libDir);
VIR_FREE(driver->config->channelTargetDir);
driver->config->libDir = g_strdup("/tmp/lib");
driver->config->channelTargetDir = g_strdup("/tmp/channel");
if (!g_mkdtemp(statedir)) {
fprintf(stderr, "Cannot create fake stateDir");
goto error;
}
driver->config->stateDir = g_strdup(statedir);
if (!g_mkdtemp(configdir)) {
fprintf(stderr, "Cannot create fake configDir");
goto error;
}
driver->config->configDir = g_strdup(configdir);
driver->caps = testQemuCapsInit();
if (!driver->caps)
goto error;
/* Using /dev/null for libDir and cacheDir automatically produces errors
* upon attempt to use any of them */
driver->qemuCapsCache = virQEMUCapsCacheNew("/dev/null", "/dev/null", 0, 0);
if (!driver->qemuCapsCache)
goto error;
driver->xmlopt = virQEMUDriverCreateXMLConf(driver, "none");
if (!driver->xmlopt)
goto error;
if (qemuTestCapsCacheInsert(driver->qemuCapsCache, NULL) < 0)
goto error;
if (!(mgr = virSecurityManagerNew("none", "qemu",
VIR_SECURITY_MANAGER_PRIVILEGED)))
goto error;
if (!(driver->securityManager = virSecurityManagerNewStack(mgr)))
goto error;
qemuTestSetHostCPU(driver, driver->hostarch, NULL);
return 0;
error:
virObjectUnref(mgr);
qemuTestDriverFree(driver);
return -1;
}
int
testQemuCapsSetGIC(virQEMUCapsPtr qemuCaps,
int gic)
{
virGICCapability *gicCapabilities = NULL;
size_t ngicCapabilities = 0;
if (VIR_ALLOC_N(gicCapabilities, 2) < 0)
return -1;
# define IMPL_BOTH \
VIR_GIC_IMPLEMENTATION_KERNEL|VIR_GIC_IMPLEMENTATION_EMULATED
if (gic & GIC_V2) {
gicCapabilities[ngicCapabilities].version = VIR_GIC_VERSION_2;
gicCapabilities[ngicCapabilities].implementation = IMPL_BOTH;
ngicCapabilities++;
}
if (gic & GIC_V3) {
gicCapabilities[ngicCapabilities].version = VIR_GIC_VERSION_3;
gicCapabilities[ngicCapabilities].implementation = IMPL_BOTH;
ngicCapabilities++;
}
# undef IMPL_BOTH
virQEMUCapsSetGICCapabilities(qemuCaps,
gicCapabilities, ngicCapabilities);
return 0;
}
#endif
char *
testQemuGetLatestCapsForArch(const char *arch,
const char *suffix)
{
struct dirent *ent;
DIR *dir = NULL;
int rc;
g_autofree char *fullsuffix = NULL;
unsigned long maxver = 0;
unsigned long ver;
g_autofree char *maxname = NULL;
char *ret = NULL;
fullsuffix = g_strdup_printf("%s.%s", arch, suffix);
if (virDirOpen(&dir, TEST_QEMU_CAPS_PATH) < 0)
goto cleanup;
while ((rc = virDirRead(dir, &ent, TEST_QEMU_CAPS_PATH)) > 0) {
g_autofree char *tmp = NULL;
tmp = g_strdup(STRSKIP(ent->d_name, "caps_"));
if (!tmp)
continue;
if (!virStringStripSuffix(tmp, fullsuffix))
continue;
if (virParseVersionString(tmp, &ver, false) < 0) {
VIR_TEST_DEBUG("skipping caps file '%s'", ent->d_name);
continue;
}
if (ver > maxver) {
g_free(maxname);
maxname = g_strdup(ent->d_name);
maxver = ver;
}
}
if (rc < 0)
goto cleanup;
if (!maxname) {
VIR_TEST_VERBOSE("failed to find capabilities for '%s' in '%s'",
arch, TEST_QEMU_CAPS_PATH);
goto cleanup;
}
ret = g_strdup_printf("%s/%s", TEST_QEMU_CAPS_PATH, maxname);
cleanup:
virDirClose(&dir);
return ret;
}
virHashTablePtr
testQemuGetLatestCaps(void)
{
const char *archs[] = {
"aarch64",
"ppc64",
"riscv64",
"s390x",
"x86_64",
};
virHashTablePtr capslatest;
size_t i;
if (!(capslatest = virHashCreate(4, virHashValueFree)))
goto error;
VIR_TEST_VERBOSE("");
for (i = 0; i < G_N_ELEMENTS(archs); ++i) {
char *cap = testQemuGetLatestCapsForArch(archs[i], "xml");
if (!cap || virHashAddEntry(capslatest, archs[i], cap) < 0)
goto error;
VIR_TEST_VERBOSE("latest caps for %s: %s", archs[i], cap);
}
VIR_TEST_VERBOSE("");
return capslatest;
error:
virHashFree(capslatest);
return NULL;
}
int
testQemuCapsIterate(const char *suffix,
testQemuCapsIterateCallback callback,
void *opaque)
{
struct dirent *ent;
DIR *dir = NULL;
int rc;
int ret = -1;
bool fail = false;
if (!callback)
return 0;
/* Validate suffix */
if (!STRPREFIX(suffix, ".")) {
VIR_TEST_VERBOSE("malformed suffix '%s'", suffix);
goto cleanup;
}
if (virDirOpen(&dir, TEST_QEMU_CAPS_PATH) < 0)
goto cleanup;
while ((rc = virDirRead(dir, &ent, TEST_QEMU_CAPS_PATH)) > 0) {
g_autofree char *tmp = g_strdup(ent->d_name);
char *version = NULL;
char *archName = NULL;
/* Strip the trailing suffix, moving on if it's not present */
if (!virStringStripSuffix(tmp, suffix))
continue;
/* Strip the leading prefix */
if (!(version = STRSKIP(tmp, "caps_"))) {
VIR_TEST_VERBOSE("malformed file name '%s'", ent->d_name);
goto cleanup;
}
/* Find the last dot */
if (!(archName = strrchr(tmp, '.'))) {
VIR_TEST_VERBOSE("malformed file name '%s'", ent->d_name);
goto cleanup;
}
/* The version number and the architecture name are separated by
* a dot: overwriting that dot with \0 results in both being usable
* as independent, null-terminated strings */
archName[0] = '\0';
archName++;
/* Run the user-provided callback.
*
* We skip the dot that, as verified earlier, starts the suffix
* to make it nicer to rebuild the original file name from inside
* the callback.
*/
if (callback(TEST_QEMU_CAPS_PATH, "caps", version,
archName, suffix + 1, opaque) < 0)
fail = true;
}
if (rc < 0 || fail)
goto cleanup;
ret = 0;
cleanup:
virDirClose(&dir);
return ret;
}
int
testQemuInfoSetArgs(struct testQemuInfo *info,
virHashTablePtr capslatest, ...)
{
va_list argptr;
testQemuInfoArgName argname;
virQEMUCapsPtr qemuCaps = NULL;
int gic = GIC_NONE;
char *capsarch = NULL;
char *capsver = NULL;
g_autofree char *capsfile = NULL;
int flag;
int ret = -1;
va_start(argptr, capslatest);
argname = va_arg(argptr, testQemuInfoArgName);
while (argname != ARG_END) {
switch (argname) {
case ARG_QEMU_CAPS:
if (qemuCaps || !(qemuCaps = virQEMUCapsNew()))
goto cleanup;
while ((flag = va_arg(argptr, int)) < QEMU_CAPS_LAST)
virQEMUCapsSet(qemuCaps, flag);
/* Some tests are run with NONE capabilities, which is just
* another name for QEMU_CAPS_LAST. If that is the case the
* arguments look like this :
*
* ARG_QEMU_CAPS, NONE, QEMU_CAPS_LAST, ARG_END
*
* Fetch one argument more and if it is QEMU_CAPS_LAST then
* break from the switch() to force getting next argument
* in the line. If it is not QEMU_CAPS_LAST then we've
* fetched real ARG_* and we must process it.
*/
if ((flag = va_arg(argptr, int)) != QEMU_CAPS_LAST) {
argname = flag;
continue;
}
break;
case ARG_GIC:
gic = va_arg(argptr, int);
break;
case ARG_MIGRATE_FROM:
info->migrateFrom = va_arg(argptr, char *);
break;
case ARG_MIGRATE_FD:
info->migrateFd = va_arg(argptr, int);
break;
case ARG_FLAGS:
info->flags = va_arg(argptr, int);
break;
case ARG_PARSEFLAGS:
info->parseFlags = va_arg(argptr, int);
break;
case ARG_CAPS_ARCH:
capsarch = va_arg(argptr, char *);
break;
case ARG_CAPS_VER:
capsver = va_arg(argptr, char *);
break;
case ARG_END:
default:
fprintf(stderr, "Unexpected test info argument");
goto cleanup;
}
argname = va_arg(argptr, testQemuInfoArgName);
}
if (!!capsarch ^ !!capsver) {
fprintf(stderr, "ARG_CAPS_ARCH and ARG_CAPS_VER "
"must be specified together.\n");
goto cleanup;
}
if (qemuCaps && (capsarch || capsver)) {
fprintf(stderr, "ARG_QEMU_CAPS can not be combined with ARG_CAPS_ARCH "
"or ARG_CAPS_VER\n");
goto cleanup;
}
if (!qemuCaps && capsarch && capsver) {
bool stripmachinealiases = false;
info->arch = virArchFromString(capsarch);
if (STREQ(capsver, "latest")) {
capsfile = g_strdup(virHashLookup(capslatest, capsarch));
stripmachinealiases = true;
} else capsfile = g_strdup_printf("%s/caps_%s.%s.xml",
TEST_QEMU_CAPS_PATH, capsver, capsarch);
if (!(qemuCaps = qemuTestParseCapabilitiesArch(info->arch, capsfile)))
goto cleanup;
if (stripmachinealiases)
virQEMUCapsStripMachineAliases(qemuCaps);
info->flags |= FLAG_REAL_CAPS;
/* provide path to the replies file for schema testing */
capsfile[strlen(capsfile) - 3] = '\0';
info->schemafile = g_strdup_printf("%sreplies", capsfile);
}
if (!qemuCaps) {
fprintf(stderr, "No qemuCaps generated\n");
goto cleanup;
}
info->qemuCaps = g_steal_pointer(&qemuCaps);
if (gic != GIC_NONE && testQemuCapsSetGIC(info->qemuCaps, gic) < 0)
goto cleanup;
ret = 0;
cleanup:
virObjectUnref(qemuCaps);
va_end(argptr);
return ret;
}
void
testQemuInfoClear(struct testQemuInfo *info)
{
VIR_FREE(info->infile);
VIR_FREE(info->outfile);
VIR_FREE(info->schemafile);
virObjectUnref(info->qemuCaps);
}
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