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libvirt/tests/testutilsqemu.c
Laine Stump 85c8c29214 remove unnecessary cleanup labels and unused return variables 
After converting all DIR* to g_autoptr(DIR), many cleanup: labels
ended up just having "return ret", and every place that set ret would
just immediately goto cleanup. Remove the cleanup label and its
return, and just return the set value immediately, thus eliminating
the need for the return variable itself.

Signed-off-by: Laine Stump <laine@redhat.com>
Reviewed-by: Daniel Henrique Barboza <danielhb413@gmail.com>
2020-11-02 22:01:36 -05:00

808 lines
22 KiB
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,
};
static const char *qemu_default_ram_id[VIR_ARCH_LAST] = {
[VIR_ARCH_I686] = "pc.ram",
[VIR_ARCH_X86_64] = "pc.ram",
[VIR_ARCH_AARCH64] = "mach-virt.ram",
[VIR_ARCH_ARMV7L] = "vexpress.highmem",
[VIR_ARCH_PPC64] = "ppc_spapr.ram",
[VIR_ARCH_PPC] = "ppc_spapr.ram",
[VIR_ARCH_S390X] = "s390.ram"
};
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. */
caps->host.secModels = g_new0(virCapsHostSecModel, 1);
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)) {
const char *defaultRAMid = NULL;
/* default-ram-id appeared in QEMU 5.2.0. Reflect
* this in our capabilities, i.e. set it for new
* enough versions only. */
if (virQEMUCapsGetVersion(tmpCaps) >= 5002000)
defaultRAMid = qemu_default_ram_id[i];
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,
defaultRAMid);
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,
defaultRAMid);
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;
gicCapabilities = g_new0(virGICCapability, 2);
# 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;
g_autoptr(DIR) dir = NULL;
int rc;
g_autofree char *fullsuffix = NULL;
unsigned long maxver = 0;
unsigned long ver;
g_autofree char *maxname = NULL;
fullsuffix = g_strdup_printf("%s.%s", arch, suffix);
if (virDirOpen(&dir, TEST_QEMU_CAPS_PATH) < 0)
return NULL;
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)
return NULL;
if (!maxname) {
VIR_TEST_VERBOSE("failed to find capabilities for '%s' in '%s'",
arch, TEST_QEMU_CAPS_PATH);
return NULL;
}
return g_strdup_printf("%s/%s", TEST_QEMU_CAPS_PATH, maxname);
}
virHashTablePtr
testQemuGetLatestCaps(void)
{
const char *archs[] = {
"aarch64",
"ppc64",
"riscv64",
"s390x",
"x86_64",
};
virHashTablePtr capslatest;
size_t i;
if (!(capslatest = virHashNew(g_free)))
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;
g_autoptr(DIR) dir = NULL;
int rc;
bool fail = false;
if (!callback)
return 0;
/* Validate suffix */
if (!STRPREFIX(suffix, ".")) {
VIR_TEST_VERBOSE("malformed suffix '%s'", suffix);
return -1;
}
if (virDirOpen(&dir, TEST_QEMU_CAPS_PATH) < 0)
return -1;
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);
return -1;
}
/* Find the last dot */
if (!(archName = strrchr(tmp, '.'))) {
VIR_TEST_VERBOSE("malformed file name '%s'", ent->d_name);
return -1;
}
/* 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)
return -1;
return 0;
}
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);
VIR_FREE(info->errfile);
virObjectUnref(info->qemuCaps);
}
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