static int
testCompareXMLToArgvHelper(const void *data)
{
int result = -1;
const struct testInfo *info = data;
char *xml = NULL;
char *args = NULL;
if (virAsprintf(&xml, "%s/qemuxml2argvdata/qemuxml2argv-%s.xml",
abs_srcdir, info->name) < 0 ||
virAsprintf(&args, "%s/qemuxml2argvdata/qemuxml2argv-%s.args",
abs_srcdir, info->name) < 0)
goto cleanup;
result = testCompareXMLToArgvFiles(xml, args, info->extraFlags,
info->migrateFrom, info->migrateFd,
qemuCapsGet(info->extraFlags,
QEMU_CAPS_MONITOR_JSON),
info->expectError);
cleanup:
free(xml);
free(args);
return result;
}
int
qemuCapsProbeCPUModels(const char *qemu,
virBitmapPtr qemuCaps,
const char *arch,
unsigned int *count,
const char ***cpus)
{
char *output = NULL;
int ret = -1;
qemuCapsParseCPUModels parse;
virCommandPtr cmd;
if (count)
*count = 0;
if (cpus)
*cpus = NULL;
if (STREQ(arch, "i686") || STREQ(arch, "x86_64"))
parse = qemuCapsParseX86Models;
else if (STREQ(arch, "ppc64"))
parse = qemuCapsParsePPCModels;
else {
VIR_DEBUG("don't know how to parse %s CPU models", arch);
return 0;
}
cmd = virCommandNewArgList(qemu, "-cpu", "?", NULL);
if (qemuCapsGet(qemuCaps, QEMU_CAPS_NODEFCONFIG))
virCommandAddArg(cmd, "-nodefconfig");
virCommandAddEnvPassCommon(cmd);
virCommandSetOutputBuffer(cmd, &output);
virCommandClearCaps(cmd);
if (virCommandRun(cmd, NULL) < 0)
goto cleanup;
if (parse(output, count, cpus) < 0)
goto cleanup;
ret = 0;
cleanup:
VIR_FREE(output);
virCommandFree(cmd);
return ret;
}
static int testCompareXMLToArgvFiles(const char *xml,
const char *cmdline,
virBitmapPtr 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(driver.caps, xml,
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 (!(emulator = strdup(vmdef->emulator + 1)))
goto fail;
free(vmdef->emulator);
vmdef->emulator = NULL;
if (virAsprintf(&vmdef->emulator, "%s/qemuxml2argvdata/%s",
abs_srcdir, emulator) < 0)
goto fail;
}
if (qemuCapsGet(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;
qemuCapsSetList(extraFlags,
QEMU_CAPS_VNC_COLON,
QEMU_CAPS_NO_REBOOT,
QEMU_CAPS_LAST);
if (qemudCanonicalizeMachine(&driver, vmdef) < 0)
goto fail;
if (qemuCapsGet(extraFlags, QEMU_CAPS_DEVICE)) {
qemuDomainPCIAddressSetPtr pciaddrs;
if (!(pciaddrs = qemuDomainPCIAddressSetCreate(vmdef)))
goto fail;
if (qemuAssignDevicePCISlots(vmdef, pciaddrs) < 0)
goto fail;
qemuDomainPCIAddressSetFree(pciaddrs);
}
free(virtTestLogContentAndReset());
virResetLastError();
/* We do not call qemuCapsExtractVersionInfo() before calling
* qemuBuildCommandLine(), so we should set QEMU_CAPS_PCI_MULTIBUS for
* x86_64 and i686 architectures here.
*/
if (STREQLEN(vmdef->os.arch, "x86_64", 6) ||
STREQLEN(vmdef->os.arch, "i686", 4)) {
qemuCapsSet(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_VM_OP_NO_OP)))
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:
free(log);
free(emulator);
free(expectargv);
free(actualargv);
virCommandFree(cmd);
virDomainDefFree(vmdef);
virUnrefConnect(conn);
return ret;
}
static int
qemuCapsInitGuest(virCapsPtr caps,
virCapsPtr old_caps,
const char *hostmachine,
const struct qemu_arch_info *info,
int hvm)
{
virCapsGuestPtr guest;
int i;
int haskvm = 0;
int haskqemu = 0;
char *kvmbin = NULL;
char *binary = NULL;
time_t binary_mtime;
virCapsGuestMachinePtr *machines = NULL;
int nmachines = 0;
struct stat st;
unsigned int ncpus;
virBitmapPtr qemuCaps = NULL;
int ret = -1;
/* Check for existance of base emulator, or alternate base
* which can be used with magic cpu choice
*/
binary = virFindFileInPath(info->binary);
if (binary == NULL || !virFileIsExecutable(binary)) {
VIR_FREE(binary);
binary = virFindFileInPath(info->altbinary);
}
/* Can use acceleration for KVM/KQEMU if
* - host & guest arches match
* Or
* - hostarch is x86_64 and guest arch is i686
* The latter simply needs "-cpu qemu32"
*/
if (STREQ(info->arch, hostmachine) ||
(STREQ(hostmachine, "x86_64") && STREQ(info->arch, "i686"))) {
if (access("/dev/kvm", F_OK) == 0) {
const char *const kvmbins[] = { "/usr/libexec/qemu-kvm", /* RHEL */
"qemu-kvm", /* Fedora */
"kvm" }; /* Upstream .spec */
for (i = 0; i < ARRAY_CARDINALITY(kvmbins); ++i) {
kvmbin = virFindFileInPath(kvmbins[i]);
if (!kvmbin)
continue;
haskvm = 1;
if (!binary)
binary = kvmbin;
break;
}
}
if (access("/dev/kqemu", F_OK) == 0)
haskqemu = 1;
}
if (!binary)
return 0;
/* Ignore binary if extracting version info fails */
if (qemuCapsExtractVersionInfo(binary, info->arch, NULL, &qemuCaps) < 0) {
ret = 0;
goto cleanup;
}
if (stat(binary, &st) == 0) {
binary_mtime = st.st_mtime;
} else {
char ebuf[1024];
VIR_WARN("Failed to stat %s, most peculiar : %s",
binary, virStrerror(errno, ebuf, sizeof(ebuf)));
binary_mtime = 0;
}
if (info->machine) {
virCapsGuestMachinePtr machine;
if (VIR_ALLOC(machine) < 0) {
goto no_memory;
}
if (!(machine->name = strdup(info->machine))) {
VIR_FREE(machine);
goto no_memory;
}
nmachines = 1;
if (VIR_ALLOC_N(machines, nmachines) < 0) {
VIR_FREE(machine->name);
VIR_FREE(machine);
goto no_memory;
}
machines[0] = machine;
} else {
int probe = 1;
if (old_caps && binary_mtime)
probe = !qemuCapsGetOldMachines(hvm ? "hvm" : "xen", info->arch,
info->wordsize, binary, binary_mtime,
old_caps, &machines, &nmachines);
if (probe &&
qemuCapsProbeMachineTypes(binary, &machines, &nmachines) < 0)
goto error;
}
/* We register kvm as the base emulator too, since we can
* just give -no-kvm to disable acceleration if required */
if ((guest = virCapabilitiesAddGuest(caps,
hvm ? "hvm" : "xen",
info->arch,
info->wordsize,
binary,
NULL,
nmachines,
machines)) == NULL)
goto error;
machines = NULL;
nmachines = 0;
guest->arch.defaultInfo.emulator_mtime = binary_mtime;
if (caps->host.cpu &&
qemuCapsProbeCPUModels(binary, NULL, info->arch, &ncpus, NULL) == 0 &&
ncpus > 0 &&
!virCapabilitiesAddGuestFeature(guest, "cpuselection", 1, 0))
goto error;
if (qemuCapsGet(qemuCaps, QEMU_CAPS_BOOTINDEX) &&
!virCapabilitiesAddGuestFeature(guest, "deviceboot", 1, 0))
goto error;
if (hvm) {
if (virCapabilitiesAddGuestDomain(guest,
"qemu",
NULL,
NULL,
0,
NULL) == NULL)
goto error;
if (haskqemu &&
virCapabilitiesAddGuestDomain(guest,
"kqemu",
NULL,
NULL,
0,
NULL) == NULL)
goto error;
if (haskvm) {
virCapsGuestDomainPtr dom;
if (stat(kvmbin, &st) == 0) {
binary_mtime = st.st_mtime;
} else {
char ebuf[1024];
VIR_WARN("Failed to stat %s, most peculiar : %s",
binary, virStrerror(errno, ebuf, sizeof(ebuf)));
binary_mtime = 0;
}
if (!STREQ(binary, kvmbin)) {
int probe = 1;
if (old_caps && binary_mtime)
probe = !qemuCapsGetOldMachines("hvm", info->arch, info->wordsize,
kvmbin, binary_mtime,
old_caps, &machines, &nmachines);
if (probe &&
qemuCapsProbeMachineTypes(kvmbin, &machines, &nmachines) < 0)
goto error;
}
if ((dom = virCapabilitiesAddGuestDomain(guest,
"kvm",
kvmbin,
NULL,
nmachines,
machines)) == NULL) {
goto error;
}
machines = NULL;
nmachines = 0;
dom->info.emulator_mtime = binary_mtime;
}
} else {
if (virCapabilitiesAddGuestDomain(guest,
"kvm",
NULL,
NULL,
0,
NULL) == NULL)
goto error;
}
if (info->nflags) {
for (i = 0 ; i < info->nflags ; i++) {
if (virCapabilitiesAddGuestFeature(guest,
info->flags[i].name,
info->flags[i].default_on,
info->flags[i].toggle) == NULL)
goto error;
}
}
ret = 0;
cleanup:
if (binary == kvmbin) {
/* don't double free */
VIR_FREE(binary);
} else {
VIR_FREE(binary);
VIR_FREE(kvmbin);
}
qemuCapsFree(qemuCaps);
return ret;
no_memory:
virReportOOMError();
error:
virCapabilitiesFreeMachines(machines, nmachines);
goto cleanup;
}