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libvirt/tests/testutilsqemu.c
Peter Krempa 47b6829edc qemu: Always assume QEMU_CAPS_CHARDEV_FD_PASS_COMMANDLINE 
All qemu versions now support FD passing either directly or via FDset.
Assume that we always have this capability so that we can simplify
chardev handling in many cases.

Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
2022-04-04 12:26:59 +02:00

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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 <sys/types.h>
# include <fcntl.h>
# define VIR_FROM_THIS VIR_FROM_QEMU
virCPUDef *cpuDefault;
virCPUDef *cpuHaswell;
virCPUDef *cpuPower8;
virCPUDef *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",
[VIR_ARCH_SPARC] = "/usr/bin/qemu-system-sparc",
};
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", NULL
};
static const char *const x86_64_machines[] = {
"pc", "q35", NULL
};
static const char *const aarch64_machines[] = {
"virt", "virt-2.6", "versatilepb", NULL
};
static const char *const arm_machines[] = {
"vexpress-a9", "virt", NULL
};
static const char *const ppc64_machines[] = {
"pseries", NULL
};
static const char *const ppc_machines[] = {
"ppce500", NULL
};
static const char *const riscv32_machines[] = {
"virt", NULL
};
static const char *const riscv64_machines[] = {
"virt", NULL
};
static const char *const s390x_machines[] = {
"s390-ccw-virtio", NULL
};
static const char *const sparc_machines[] = {
"SS-5", 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,
[VIR_ARCH_SPARC] = sparc_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 *const *hvf_machines[VIR_ARCH_LAST] = {
[VIR_ARCH_I686] = NULL,
[VIR_ARCH_X86_64] = x86_64_machines,
[VIR_ARCH_AARCH64] = aarch64_machines,
[VIR_ARCH_ARMV7L] = NULL,
[VIR_ARCH_PPC64] = NULL,
[VIR_ARCH_PPC] = NULL,
[VIR_ARCH_RISCV32] = NULL,
[VIR_ARCH_RISCV64] = NULL,
[VIR_ARCH_S390X] = NULL,
};
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",
[VIR_ARCH_SPARC] = "sun4m.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;
}
virCapsHostNUMA *
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);
}
void
virHostCPUX86GetCPUID(uint32_t leaf,
uint32_t extended,
uint32_t *eax,
uint32_t *ebx,
uint32_t *ecx,
uint32_t *edx)
{
if (eax)
*eax = 0;
if (ebx)
*ebx = 0;
if (ecx)
*ecx = 0;
if (edx)
*edx = 0;
if (leaf == 0x8000001F && extended == 0) {
if (ecx)
*ecx = 509;
if (edx)
*edx = 451;
}
}
static int
testQemuAddGuest(virCaps *caps,
virArch arch,
testQemuHostOS hostOS)
{
size_t nmachines;
virCapsGuestMachine **machines = NULL;
virCapsGuest *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;
guest = virCapabilitiesAddGuest(caps, VIR_DOMAIN_OSTYPE_HVM,
arch, qemu_emulators[emu_arch],
NULL, nmachines, machines);
machines = NULL;
nmachines = 0;
if (arch == VIR_ARCH_I686 ||
arch == VIR_ARCH_X86_64)
virCapabilitiesAddGuestFeature(guest, VIR_CAPS_GUEST_FEATURE_TYPE_CPUSELECTION);
virCapabilitiesAddGuestDomain(guest, VIR_DOMAIN_VIRT_QEMU,
NULL, NULL, 0, NULL);
if (hostOS == HOST_OS_LINUX) {
if (kvm_machines[emu_arch] != NULL) {
nmachines = g_strv_length((char **)kvm_machines[emu_arch]);
machines = virCapabilitiesAllocMachines(kvm_machines[emu_arch],
nmachines);
if (machines == NULL)
goto error;
virCapabilitiesAddGuestDomain(guest, VIR_DOMAIN_VIRT_KVM,
qemu_emulators[emu_arch],
NULL, nmachines, machines);
}
}
if (hostOS == HOST_OS_MACOS) {
if (hvf_machines[emu_arch] != NULL) {
nmachines = g_strv_length((char **)hvf_machines[emu_arch]);
machines = virCapabilitiesAllocMachines(hvf_machines[emu_arch],
nmachines);
if (machines == NULL)
goto error;
virCapabilitiesAddGuestDomain(guest, VIR_DOMAIN_VIRT_HVF,
qemu_emulators[emu_arch],
NULL, nmachines, machines);
}
}
return 0;
error:
virCapabilitiesFreeMachines(machines, nmachines);
return -1;
}
static virCaps*
testQemuCapsInitImpl(testQemuHostOS hostOS)
{
virCaps *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, hostOS) < 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;
}
virCaps*
testQemuCapsInit(void)
{
return testQemuCapsInitImpl(HOST_OS_LINUX);
}
virCaps*
testQemuCapsInitMacOS(void)
{
return testQemuCapsInitImpl(HOST_OS_MACOS);
}
void
qemuTestSetHostArch(virQEMUDriver *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(virQEMUDriver *driver,
virArch arch,
virCPUDef *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;
}
}
virQEMUCaps *
qemuTestParseCapabilitiesArch(virArch arch,
const char *capsFile)
{
g_autoptr(virQEMUCaps) 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)
return NULL;
return g_steal_pointer(&qemuCaps);
}
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);
virCPUDefFree(cpuDefault);
virCPUDefFree(cpuHaswell);
virCPUDefFree(cpuPower8);
virCPUDefFree(cpuPower9);
}
static void
qemuTestCapsPopulateFakeMachines(virQEMUCaps *caps,
virArch arch,
testQemuHostOS hostOS)
{
size_t i;
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(caps) >= 5002000)
defaultRAMid = qemu_default_ram_id[arch];
virQEMUCapsSetArch(caps, arch);
for (i = 0; qemu_machines[arch][i] != NULL; i++) {
virQEMUCapsAddMachine(caps,
VIR_DOMAIN_VIRT_QEMU,
qemu_machines[arch][i],
NULL,
NULL,
0,
false,
false,
true,
defaultRAMid,
false);
virQEMUCapsSet(caps, QEMU_CAPS_TCG);
}
if (hostOS == HOST_OS_LINUX) {
if (kvm_machines[arch] != NULL) {
for (i = 0; kvm_machines[arch][i] != NULL; i++) {
virQEMUCapsAddMachine(caps,
VIR_DOMAIN_VIRT_KVM,
kvm_machines[arch][i],
NULL,
NULL,
0,
false,
false,
true,
defaultRAMid,
false);
virQEMUCapsSet(caps, QEMU_CAPS_KVM);
}
}
}
if (hostOS == HOST_OS_MACOS) {
if (hvf_machines[arch] != NULL) {
for (i = 0; hvf_machines[arch][i] != NULL; i++) {
virQEMUCapsAddMachine(caps,
VIR_DOMAIN_VIRT_HVF,
hvf_machines[arch][i],
NULL,
NULL,
0,
false,
false,
true,
defaultRAMid,
false);
virQEMUCapsSet(caps, QEMU_CAPS_HVF);
}
}
}
}
static int
qemuTestCapsCacheInsertData(virFileCache *cache,
const char *binary,
virQEMUCaps *caps)
{
if (virFileCacheInsertData(cache, binary, virObjectRef(caps)) < 0) {
virObjectUnref(caps);
return -1;
}
return 0;
}
static int
qemuTestCapsCacheInsertImpl(virFileCache *cache,
virQEMUCaps *caps,
testQemuHostOS hostOS)
{
size_t i;
if (caps && virQEMUCapsGetArch(caps) != VIR_ARCH_NONE) {
/* for capabilities which have architecture set we populate only the
* given architecture and poison all other so that the test doesn't
* accidentally test a weird combination */
virArch arch = virQEMUCapsGetArch(caps);
g_autoptr(virQEMUCaps) emptyCaps = virQEMUCapsNew();
g_autoptr(virQEMUCaps) copyCaps = NULL;
virQEMUCaps *effCaps = caps;
if (!emptyCaps)
return -1;
if (arch_alias[arch] != VIR_ARCH_NONE)
arch = arch_alias[arch];
if (qemu_emulators[arch]) {
/* if we are dealing with fake caps we need to populate machine types */
if (!virQEMUCapsHasMachines(caps)) {
if (!(copyCaps = effCaps = virQEMUCapsNewCopy(caps)))
return -1;
qemuTestCapsPopulateFakeMachines(copyCaps, arch, hostOS);
}
if (qemuTestCapsCacheInsertData(cache, qemu_emulators[arch], effCaps) < 0)
return -1;
}
for (i = 0; i < G_N_ELEMENTS(qemu_emulators); i++) {
if (!qemu_emulators[i])
continue;
if (i == arch)
continue;
if (qemuTestCapsCacheInsertData(cache, qemu_emulators[i], emptyCaps) < 0)
return -1;
}
} else {
/* in case when caps are missing or are missing architecture, we populate
* everything */
for (i = 0; i < G_N_ELEMENTS(qemu_emulators); i++) {
g_autoptr(virQEMUCaps) tmp = NULL;
if (qemu_emulators[i] == NULL)
continue;
if (caps)
tmp = virQEMUCapsNewCopy(caps);
else
tmp = virQEMUCapsNew();
if (!tmp)
return -1;
qemuTestCapsPopulateFakeMachines(tmp, i, hostOS);
if (qemuTestCapsCacheInsertData(cache, qemu_emulators[i], tmp) < 0)
return -1;
}
}
return 0;
}
int
qemuTestCapsCacheInsert(virFileCache *cache,
virQEMUCaps *caps)
{
return qemuTestCapsCacheInsertImpl(cache, caps, HOST_OS_LINUX);
}
int
qemuTestCapsCacheInsertMacOS(virFileCache *cache,
virQEMUCaps *caps)
{
return qemuTestCapsCacheInsertImpl(cache, caps, HOST_OS_MACOS);
}
# define STATEDIRTEMPLATE abs_builddir "/qemustatedir-XXXXXX"
# define CONFIGDIRTEMPLATE abs_builddir "/qemuconfigdir-XXXXXX"
int qemuTestDriverInit(virQEMUDriver *driver)
{
virSecurityManager *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(virQEMUCaps *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 (virStringParseVersion(&ver, tmp, 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);
}
GHashTable *
testQemuGetLatestCaps(void)
{
const char *archs[] = {
"aarch64",
"ppc64",
"riscv64",
"s390x",
"x86_64",
};
g_autoptr(GHashTable) capslatest = virHashNew(g_free);
size_t i;
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)
return NULL;
VIR_TEST_VERBOSE("latest caps for %s: %s", archs[i], cap);
}
VIR_TEST_VERBOSE("");
return g_steal_pointer(&capslatest);
}
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;
}
void
testQemuInfoSetArgs(struct testQemuInfo *info,
struct testQemuConf *conf, ...)
{
va_list argptr;
testQemuInfoArgName argname;
int flag;
if (!(info->args.fakeCaps = virQEMUCapsNew()))
abort();
info->conf = conf;
info->args.newargs = true;
va_start(argptr, conf);
while ((argname = va_arg(argptr, testQemuInfoArgName)) != ARG_END) {
switch (argname) {
case ARG_QEMU_CAPS:
info->args.fakeCapsUsed = true;
while ((flag = va_arg(argptr, int)) < QEMU_CAPS_LAST)
virQEMUCapsSet(info->args.fakeCaps, flag);
break;
case ARG_GIC:
info->args.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:
info->args.capsarch = va_arg(argptr, char *);
break;
case ARG_CAPS_VER:
info->args.capsver = va_arg(argptr, char *);
break;
case ARG_HOST_OS:
info->args.hostOS = va_arg(argptr, int);
break;
case ARG_END:
default:
info->args.invalidarg = true;
break;
}
if (info->args.invalidarg)
break;
}
va_end(argptr);
}
int
testQemuInfoInitArgs(struct testQemuInfo *info)
{
g_autofree char *capsfile = NULL;
if (!info->args.newargs)
return 0;
info->args.newargs = false;
if (info->args.invalidarg) {
fprintf(stderr, "Invalid argument encountered by 'testQemuInfoSetArgs'\n");
return -1;
}
if (!!info->args.capsarch ^ !!info->args.capsver) {
fprintf(stderr, "ARG_CAPS_ARCH and ARG_CAPS_VER must be specified together.\n");
return -1;
}
if (info->args.capsarch && info->args.capsver) {
bool stripmachinealiases = false;
virQEMUCaps *cachedcaps = NULL;
info->arch = virArchFromString(info->args.capsarch);
if (STREQ(info->args.capsver, "latest")) {
capsfile = g_strdup(virHashLookup(info->conf->capslatest, info->args.capsarch));
if (!capsfile) {
fprintf(stderr, "'latest' caps for '%s' were not found\n", info->args.capsarch);
return -1;
}
stripmachinealiases = true;
} else {
capsfile = g_strdup_printf("%s/caps_%s.%s.xml",
TEST_QEMU_CAPS_PATH,
info->args.capsver,
info->args.capsarch);
}
if (!g_hash_table_lookup_extended(info->conf->capscache, capsfile, NULL, (void **) &cachedcaps)) {
if (!(cachedcaps = qemuTestParseCapabilitiesArch(info->arch, capsfile)))
return -1;
g_hash_table_insert(info->conf->capscache, g_strdup(capsfile), cachedcaps);
}
if (!(info->qemuCaps = virQEMUCapsNewCopy(cachedcaps)))
return -1;
if (info->args.fakeCapsUsed) {
size_t i;
for (i = 0; i < QEMU_CAPS_LAST; i++) {
if (virQEMUCapsGet(info->args.fakeCaps, i)) {
virQEMUCapsSet(info->qemuCaps, i);
}
}
}
if (stripmachinealiases)
virQEMUCapsStripMachineAliases(info->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);
} else {
info->qemuCaps = g_steal_pointer(&info->args.fakeCaps);
}
if (info->args.gic != GIC_NONE &&
testQemuCapsSetGIC(info->qemuCaps, info->args.gic) < 0)
return -1;
return 0;
}
void
testQemuInfoClear(struct testQemuInfo *info)
{
VIR_FREE(info->infile);
VIR_FREE(info->outfile);
VIR_FREE(info->schemafile);
VIR_FREE(info->errfile);
virObjectUnref(info->qemuCaps);
g_clear_pointer(&info->args.fakeCaps, virObjectUnref);
}
/**
* testQemuPrepareHostBackendChardevOne:
* @dev: device definition object
* @chardev: chardev source object
* @opaque: Caller is expected to pass pointer to virDomainObj or NULL
*
* This helper sets up a chardev source backend for FD passing with fake
* file descriptros. It's expected to be used as callback for
* 'qemuDomainDeviceBackendChardevForeach', thus the VM object is passed via
* @opaque. Callers may pass NULL if the test scope is limited.
*/
int
testQemuPrepareHostBackendChardevOne(virDomainDeviceDef *dev,
virDomainChrSourceDef *chardev,
void *opaque)
{
virDomainObj *vm = opaque;
qemuDomainObjPrivate *priv = NULL;
qemuDomainChrSourcePrivate *charpriv = QEMU_DOMAIN_CHR_SOURCE_PRIVATE(chardev);
int fakesourcefd = -1;
const char *devalias = NULL;
bool usefdset = true;
if (vm)
priv = vm->privateData;
if (dev) {
virDomainDeviceInfo *info = virDomainDeviceGetInfo(dev);
devalias = info->alias;
/* vhost-user disk doesn't use FD passing */
if (dev->type == VIR_DOMAIN_DEVICE_DISK)
return 0;
if (dev->type == VIR_DOMAIN_DEVICE_NET) {
/* due to a historical bug in qemu we don't use FD passtrhough for
* vhost-sockets for network devices */
return 0;
}
/* TPMs FD passing setup is special and handled separately */
if (dev->type == VIR_DOMAIN_DEVICE_TPM)
return 0;
} else {
devalias = "monitor";
}
switch ((virDomainChrType) chardev->type) {
case VIR_DOMAIN_CHR_TYPE_NULL:
case VIR_DOMAIN_CHR_TYPE_VC:
case VIR_DOMAIN_CHR_TYPE_PTY:
case VIR_DOMAIN_CHR_TYPE_DEV:
case VIR_DOMAIN_CHR_TYPE_PIPE:
case VIR_DOMAIN_CHR_TYPE_STDIO:
case VIR_DOMAIN_CHR_TYPE_UDP:
case VIR_DOMAIN_CHR_TYPE_TCP:
case VIR_DOMAIN_CHR_TYPE_SPICEVMC:
case VIR_DOMAIN_CHR_TYPE_SPICEPORT:
break;
case VIR_DOMAIN_CHR_TYPE_FILE:
fakesourcefd = 1750;
break;
case VIR_DOMAIN_CHR_TYPE_UNIX:
if (chardev->data.nix.listen)
fakesourcefd = 1729;
usefdset = false;
break;
case VIR_DOMAIN_CHR_TYPE_NMDM:
case VIR_DOMAIN_CHR_TYPE_LAST:
break;
}
if (fakesourcefd != -1) {
if (fcntl(fakesourcefd, F_GETFD) != -1)
abort();
if (usefdset)
charpriv->sourcefd = qemuFDPassNew(devalias, priv);
else
charpriv->sourcefd = qemuFDPassNewDirect(devalias, priv);
if (qemuFDPassAddFD(charpriv->sourcefd, &fakesourcefd, "-source") < 0)
return -1;
}
if (chardev->logfile) {
int fd = 1751;
if (fcntl(fd, F_GETFD) != -1)
abort();
charpriv->logfd = qemuFDPassNew(devalias, priv);
if (qemuFDPassAddFD(charpriv->logfd, &fd, "-log") < 0)
return -1;
}
return 0;
}
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