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libvirt/src/qemu/qemu_conf.c
Chris Lalancette 87d2e4ba56 Fix a qemuDomainPCIAddressSetFree memory leak 
qemuDomainPCIAddressSetFree was freeing up the hash
table for the pci addresses, but not freeing up the addr
structure.  Looking over the callers of this function, it
seems like they expect it to also free up the structure,
so do that here.

Signed-off-by: Chris Lalancette <clalance@redhat.com>
2010-04-29 09:16:14 -04:00

6250 lines
192 KiB
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/*
* qemu_conf.c: QEMU configuration management
*
* Copyright (C) 2006, 2007, 2008, 2009, 2010 Red Hat, Inc.
* Copyright (C) 2006 Daniel P. Berrange
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
* Author: Daniel P. Berrange <berrange@redhat.com>
*/
#include <config.h>
#include <dirent.h>
#include <string.h>
#include <limits.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <stdlib.h>
#include <unistd.h>
#include <errno.h>
#include <fcntl.h>
#include <sys/wait.h>
#include <arpa/inet.h>
#include <sys/utsname.h>
#include <mntent.h>
#include "c-ctype.h"
#include "virterror_internal.h"
#include "qemu_conf.h"
#include "qemu_bridge_filter.h"
#include "uuid.h"
#include "buf.h"
#include "conf.h"
#include "util.h"
#include "memory.h"
#include "verify.h"
#include "datatypes.h"
#include "xml.h"
#include "nodeinfo.h"
#include "logging.h"
#include "network.h"
#include "macvtap.h"
#include "cpu/cpu.h"
#include "nwfilter/nwfilter_gentech_driver.h"
#define VIR_FROM_THIS VIR_FROM_QEMU
VIR_ENUM_DECL(virDomainDiskQEMUBus)
VIR_ENUM_IMPL(virDomainDiskQEMUBus, VIR_DOMAIN_DISK_BUS_LAST,
"ide",
"floppy",
"scsi",
"virtio",
"xen",
"usb",
"uml",
"sata")
VIR_ENUM_DECL(qemuDiskCacheV1)
VIR_ENUM_DECL(qemuDiskCacheV2)
VIR_ENUM_IMPL(qemuDiskCacheV1, VIR_DOMAIN_DISK_CACHE_LAST,
"default",
"off",
"off", /* writethrough not supported, so for safety, disable */
"on"); /* Old 'on' was equivalent to 'writeback' */
VIR_ENUM_IMPL(qemuDiskCacheV2, VIR_DOMAIN_DISK_CACHE_LAST,
"default",
"none",
"writethrough",
"writeback");
VIR_ENUM_DECL(qemuVideo)
VIR_ENUM_IMPL(qemuVideo, VIR_DOMAIN_VIDEO_TYPE_LAST,
"std",
"cirrus",
"vmware",
"", /* no arg needed for xen */
"" /* don't support vbox */);
int qemudLoadDriverConfig(struct qemud_driver *driver,
const char *filename) {
virConfPtr conf;
virConfValuePtr p;
char *user;
char *group;
int i;
/* Setup critical defaults */
driver->dynamicOwnership = 1;
if (!(driver->vncListen = strdup("127.0.0.1"))) {
virReportOOMError();
return -1;
}
if (!(driver->vncTLSx509certdir = strdup(SYSCONF_DIR "/pki/libvirt-vnc"))) {
virReportOOMError();
return -1;
}
#if defined HAVE_MNTENT_H && defined HAVE_GETMNTENT_R
/* For privileged driver, try and find hugepage mount automatically.
* Non-privileged driver requires admin to create a dir for the
* user, chown it, and then let user configure it manually */
if (driver->privileged &&
!(driver->hugetlbfs_mount = virFileFindMountPoint("hugetlbfs"))) {
if (errno != ENOENT) {
virReportSystemError(errno, "%s",
_("unable to find hugetlbfs mountpoint"));
return -1;
}
}
#endif
/* Just check the file is readable before opening it, otherwise
* libvirt emits an error.
*/
if (access (filename, R_OK) == -1) return 0;
conf = virConfReadFile (filename, 0);
if (!conf) return 0;
#define CHECK_TYPE(name,typ) if (p && p->type != (typ)) { \
qemuReportError(VIR_ERR_INTERNAL_ERROR, \
"remoteReadConfigFile: %s: %s: expected type " #typ, \
filename, (name)); \
virConfFree(conf); \
return -1; \
}
p = virConfGetValue (conf, "vnc_tls");
CHECK_TYPE ("vnc_tls", VIR_CONF_LONG);
if (p) driver->vncTLS = p->l;
p = virConfGetValue (conf, "vnc_tls_x509_verify");
CHECK_TYPE ("vnc_tls_x509_verify", VIR_CONF_LONG);
if (p) driver->vncTLSx509verify = p->l;
p = virConfGetValue (conf, "vnc_tls_x509_cert_dir");
CHECK_TYPE ("vnc_tls_x509_cert_dir", VIR_CONF_STRING);
if (p && p->str) {
VIR_FREE(driver->vncTLSx509certdir);
if (!(driver->vncTLSx509certdir = strdup(p->str))) {
virReportOOMError();
virConfFree(conf);
return -1;
}
}
p = virConfGetValue (conf, "vnc_listen");
CHECK_TYPE ("vnc_listen", VIR_CONF_STRING);
if (p && p->str) {
VIR_FREE(driver->vncListen);
if (!(driver->vncListen = strdup(p->str))) {
virReportOOMError();
virConfFree(conf);
return -1;
}
}
p = virConfGetValue (conf, "vnc_password");
CHECK_TYPE ("vnc_password", VIR_CONF_STRING);
if (p && p->str) {
VIR_FREE(driver->vncPassword);
if (!(driver->vncPassword = strdup(p->str))) {
virReportOOMError();
virConfFree(conf);
return -1;
}
}
p = virConfGetValue (conf, "security_driver");
CHECK_TYPE ("security_driver", VIR_CONF_STRING);
if (p && p->str) {
if (!(driver->securityDriverName = strdup(p->str))) {
virReportOOMError();
virConfFree(conf);
return -1;
}
}
p = virConfGetValue (conf, "vnc_sasl");
CHECK_TYPE ("vnc_sasl", VIR_CONF_LONG);
if (p) driver->vncSASL = p->l;
p = virConfGetValue (conf, "vnc_sasl_dir");
CHECK_TYPE ("vnc_sasl_dir", VIR_CONF_STRING);
if (p && p->str) {
VIR_FREE(driver->vncSASLdir);
if (!(driver->vncSASLdir = strdup(p->str))) {
virReportOOMError();
virConfFree(conf);
return -1;
}
}
p = virConfGetValue (conf, "user");
CHECK_TYPE ("user", VIR_CONF_STRING);
if (!(user = strdup(p && p->str ? p->str : QEMU_USER))) {
virReportOOMError();
virConfFree(conf);
return -1;
}
if (virGetUserID(user, &driver->user) < 0) {
VIR_FREE(user);
virConfFree(conf);
return -1;
}
VIR_FREE(user);
p = virConfGetValue (conf, "group");
CHECK_TYPE ("group", VIR_CONF_STRING);
if (!(group = strdup(p && p->str ? p->str : QEMU_GROUP))) {
virReportOOMError();
virConfFree(conf);
return -1;
}
if (virGetGroupID(group, &driver->group) < 0) {
VIR_FREE(group);
virConfFree(conf);
return -1;
}
VIR_FREE(group);
p = virConfGetValue (conf, "dynamic_ownership");
CHECK_TYPE ("dynamic_ownership", VIR_CONF_LONG);
if (p) driver->dynamicOwnership = p->l;
p = virConfGetValue (conf, "cgroup_controllers");
CHECK_TYPE ("cgroup_controllers", VIR_CONF_LIST);
if (p) {
virConfValuePtr pp;
for (i = 0, pp = p->list; pp; ++i, pp = pp->next) {
int ctl;
if (pp->type != VIR_CONF_STRING) {
VIR_ERROR("%s", _("cgroup_controllers must be a list of strings"));
virConfFree(conf);
return -1;
}
ctl = virCgroupControllerTypeFromString(pp->str);
if (ctl < 0) {
VIR_ERROR("Unknown cgroup controller '%s'", pp->str);
virConfFree(conf);
return -1;
}
driver->cgroupControllers |= (1 << ctl);
}
} else {
driver->cgroupControllers =
(1 << VIR_CGROUP_CONTROLLER_CPU) |
(1 << VIR_CGROUP_CONTROLLER_DEVICES);
}
for (i = 0 ; i < VIR_CGROUP_CONTROLLER_LAST ; i++) {
if (driver->cgroupControllers & (1 << i)) {
VIR_INFO("Configured cgroup controller '%s'",
virCgroupControllerTypeToString(i));
}
}
p = virConfGetValue (conf, "cgroup_device_acl");
CHECK_TYPE ("cgroup_device_acl", VIR_CONF_LIST);
if (p) {
int len = 0;
virConfValuePtr pp;
for (pp = p->list; pp; pp = pp->next)
len++;
if (VIR_ALLOC_N(driver->cgroupDeviceACL, 1+len) < 0) {
virReportOOMError();
virConfFree(conf);
return -1;
}
for (i = 0, pp = p->list; pp; ++i, pp = pp->next) {
if (pp->type != VIR_CONF_STRING) {
VIR_ERROR("%s", _("cgroup_device_acl must be a list of strings"));
virConfFree(conf);
return -1;
}
driver->cgroupDeviceACL[i] = strdup (pp->str);
if (driver->cgroupDeviceACL[i] == NULL) {
virReportOOMError();
virConfFree(conf);
return -1;
}
}
driver->cgroupDeviceACL[i] = NULL;
}
p = virConfGetValue (conf, "save_image_format");
CHECK_TYPE ("save_image_format", VIR_CONF_STRING);
if (p && p->str) {
VIR_FREE(driver->saveImageFormat);
if (!(driver->saveImageFormat = strdup(p->str))) {
virReportOOMError();
virConfFree(conf);
return -1;
}
}
p = virConfGetValue (conf, "hugetlbfs_mount");
CHECK_TYPE ("hugetlbfs_mount", VIR_CONF_STRING);
if (p && p->str) {
VIR_FREE(driver->hugetlbfs_mount);
if (!(driver->hugetlbfs_mount = strdup(p->str))) {
virReportOOMError();
virConfFree(conf);
return -1;
}
}
p = virConfGetValue (conf, "mac_filter");
CHECK_TYPE ("mac_filter", VIR_CONF_LONG);
if (p && p->l) {
driver->macFilter = p->l;
if (!(driver->ebtables = ebtablesContextNew("qemu"))) {
driver->macFilter = 0;
virReportSystemError(errno,
_("failed to enable mac filter in '%s'"),
__FILE__);
}
if ((errno = networkDisableAllFrames(driver))) {
virReportSystemError(errno,
_("failed to add rule to drop all frames in '%s'"),
__FILE__);
}
}
p = virConfGetValue (conf, "relaxed_acs_check");
CHECK_TYPE ("relaxed_acs_check", VIR_CONF_LONG);
if (p) driver->relaxedACS = p->l;
virConfFree (conf);
return 0;
}
struct qemu_feature_flags {
const char *name;
const int default_on;
const int toggle;
};
struct qemu_arch_info {
const char *arch;
int wordsize;
const char *machine;
const char *binary;
const char *altbinary;
const struct qemu_feature_flags *flags;
int nflags;
};
/* Feature flags for the architecture info */
static const struct qemu_feature_flags const arch_info_i686_flags [] = {
{ "pae", 1, 0 },
{ "nonpae", 1, 0 },
{ "acpi", 1, 1 },
{ "apic", 1, 0 },
};
static const struct qemu_feature_flags const arch_info_x86_64_flags [] = {
{ "acpi", 1, 1 },
{ "apic", 1, 0 },
};
/* The archicture tables for supported QEMU archs */
static const struct qemu_arch_info const arch_info_hvm[] = {
{ "i686", 32, NULL, "qemu",
"qemu-system-x86_64", arch_info_i686_flags, 4 },
{ "x86_64", 64, NULL, "qemu-system-x86_64",
NULL, arch_info_x86_64_flags, 2 },
{ "arm", 32, NULL, "qemu-system-arm", NULL, NULL, 0 },
{ "mips", 32, NULL, "qemu-system-mips", NULL, NULL, 0 },
{ "mipsel", 32, NULL, "qemu-system-mipsel", NULL, NULL, 0 },
{ "sparc", 32, NULL, "qemu-system-sparc", NULL, NULL, 0 },
{ "ppc", 32, NULL, "qemu-system-ppc", NULL, NULL, 0 },
{ "itanium", 64, NULL, "qemu-system-ia64", NULL, NULL, 0 },
};
static const struct qemu_arch_info const arch_info_xen[] = {
{ "i686", 32, "xenner", "xenner", NULL, arch_info_i686_flags, 4 },
{ "x86_64", 64, "xenner", "xenner", NULL, arch_info_x86_64_flags, 2 },
};
/* Format is:
* <machine> <desc> [(default)|(alias of <canonical>)]
*/
static int
qemudParseMachineTypesStr(const char *output,
virCapsGuestMachinePtr **machines,
int *nmachines)
{
const char *p = output;
const char *next;
virCapsGuestMachinePtr *list = NULL;
int nitems = 0;
do {
const char *t;
virCapsGuestMachinePtr machine;
if ((next = strchr(p, '\n')))
++next;
if (STRPREFIX(p, "Supported machines are:"))
continue;
if (!(t = strchr(p, ' ')) || (next && t >= next))
continue;
if (VIR_ALLOC(machine) < 0)
goto no_memory;
if (!(machine->name = strndup(p, t - p))) {
VIR_FREE(machine);
goto no_memory;
}
if (VIR_REALLOC_N(list, nitems + 1) < 0) {
VIR_FREE(machine->name);
VIR_FREE(machine);
goto no_memory;
}
p = t;
if (!(t = strstr(p, "(default)")) || (next && t >= next)) {
list[nitems++] = machine;
} else {
/* put the default first in the list */
memmove(list + 1, list, sizeof(*list) * nitems);
list[0] = machine;
nitems++;
}
if ((t = strstr(p, "(alias of ")) && (!next || t < next)) {
p = t + strlen("(alias of ");
if (!(t = strchr(p, ')')) || (next && t >= next))
continue;
if (!(machine->canonical = strndup(p, t - p)))
goto no_memory;
}
} while ((p = next));
*machines = list;
*nmachines = nitems;
return 0;
no_memory:
virReportOOMError();
virCapabilitiesFreeMachines(list, nitems);
return -1;
}
int
qemudProbeMachineTypes(const char *binary,
virCapsGuestMachinePtr **machines,
int *nmachines)
{
const char *const qemuarg[] = { binary, "-M", "?", NULL };
const char *const qemuenv[] = { "LC_ALL=C", NULL };
char *output;
enum { MAX_MACHINES_OUTPUT_SIZE = 1024*4 };
pid_t child;
int newstdout = -1, len;
int ret = -1, status;
if (virExec(qemuarg, qemuenv, NULL,
&child, -1, &newstdout, NULL, VIR_EXEC_CLEAR_CAPS) < 0)
return -1;
len = virFileReadLimFD(newstdout, MAX_MACHINES_OUTPUT_SIZE, &output);
if (len < 0) {
virReportSystemError(errno, "%s",
_("Unable to read 'qemu -M ?' output"));
goto cleanup;
}
if (qemudParseMachineTypesStr(output, machines, nmachines) < 0)
goto cleanup2;
ret = 0;
cleanup2:
VIR_FREE(output);
cleanup:
if (close(newstdout) < 0)
ret = -1;
rewait:
if (waitpid(child, &status, 0) != child) {
if (errno == EINTR)
goto rewait;
VIR_ERROR(_("Unexpected exit status from qemu %d pid %lu"),
WEXITSTATUS(status), (unsigned long)child);
ret = -1;
}
/* Check & log unexpected exit status, but don't fail,
* as there's really no need to throw an error if we did
* actually read a valid version number above */
if (WEXITSTATUS(status) != 0) {
VIR_WARN(_("Unexpected exit status '%d', qemu probably failed"),
WEXITSTATUS(status));
}
return ret;
}
static int
qemudGetOldMachinesFromInfo(virCapsGuestDomainInfoPtr info,
const char *emulator,
time_t emulator_mtime,
virCapsGuestMachinePtr **machines,
int *nmachines)
{
virCapsGuestMachinePtr *list;
int i;
if (!info->nmachines)
return 0;
if (!info->emulator || !STREQ(emulator, info->emulator))
return 0;
if (emulator_mtime != info->emulator_mtime) {
VIR_DEBUG("mtime on %s has changed, refreshing machine types",
info->emulator);
return 0;
}
if (VIR_ALLOC_N(list, info->nmachines) < 0) {
virReportOOMError();
return 0;
}
for (i = 0; i < info->nmachines; i++) {
if (VIR_ALLOC(list[i]) < 0) {
goto no_memory;
}
if (info->machines[i]->name &&
!(list[i]->name = strdup(info->machines[i]->name))) {
goto no_memory;
}
if (info->machines[i]->canonical &&
!(list[i]->canonical = strdup(info->machines[i]->canonical))) {
goto no_memory;
}
}
*machines = list;
*nmachines = info->nmachines;
return 1;
no_memory:
virReportOOMError();
virCapabilitiesFreeMachines(list, info->nmachines);
return 0;
}
static int
qemudGetOldMachines(const char *ostype,
const char *arch,
int wordsize,
const char *emulator,
time_t emulator_mtime,
virCapsPtr old_caps,
virCapsGuestMachinePtr **machines,
int *nmachines)
{
int i;
for (i = 0; i < old_caps->nguests; i++) {
virCapsGuestPtr guest = old_caps->guests[i];
int j;
if (!STREQ(ostype, guest->ostype) ||
!STREQ(arch, guest->arch.name) ||
wordsize != guest->arch.wordsize)
continue;
for (j = 0; j < guest->arch.ndomains; j++) {
virCapsGuestDomainPtr dom = guest->arch.domains[j];
if (qemudGetOldMachinesFromInfo(&dom->info,
emulator, emulator_mtime,
machines, nmachines))
return 1;
}
if (qemudGetOldMachinesFromInfo(&guest->arch.defaultInfo,
emulator, emulator_mtime,
machines, nmachines))
return 1;
}
return 0;
}
typedef int
(*qemudParseCPUModels)(const char *output,
unsigned int *retcount,
const char ***retcpus);
/* Format:
* <arch> <model>
* qemu-0.13 encloses some model names in []:
* <arch> [<model>]
*/
static int
qemudParseX86Models(const char *output,
unsigned int *retcount,
const char ***retcpus)
{
const char *p = output;
const char *next;
unsigned int count = 0;
const char **cpus = NULL;
int i;
do {
const char *t;
if ((next = strchr(p, '\n')))
next++;
if (!(t = strchr(p, ' ')) || (next && t >= next))
continue;
if (!STRPREFIX(p, "x86"))
continue;
p = t;
while (*p == ' ')
p++;
if (*p == '\0' || *p == '\n')
continue;
if (retcpus) {
unsigned int len;
if (VIR_REALLOC_N(cpus, count + 1) < 0)
goto error;
if (next)
len = next - p - 1;
else
len = strlen(p);
if (len > 2 && *p == '[' && p[len - 1] == ']') {
p++;
len -= 2;
}
if (!(cpus[count] = strndup(p, len)))
goto error;
}
count++;
} while ((p = next));
if (retcount)
*retcount = count;
if (retcpus)
*retcpus = cpus;
return 0;
error:
if (cpus) {
for (i = 0; i < count; i++)
VIR_FREE(cpus[i]);
}
VIR_FREE(cpus);
return -1;
}
int
qemudProbeCPUModels(const char *qemu,
const char *arch,
unsigned int *count,
const char ***cpus)
{
const char *const qemuarg[] = { qemu, "-cpu", "?", NULL };
const char *const qemuenv[] = { "LC_ALL=C", NULL };
enum { MAX_MACHINES_OUTPUT_SIZE = 1024*4 };
char *output = NULL;
int newstdout = -1;
int ret = -1;
pid_t child;
int status;
int len;
qemudParseCPUModels parse;
if (count)
*count = 0;
if (cpus)
*cpus = NULL;
if (STREQ(arch, "i686") || STREQ(arch, "x86_64"))
parse = qemudParseX86Models;
else {
VIR_DEBUG(_("don't know how to parse %s CPU models"), arch);
return 0;
}
if (virExec(qemuarg, qemuenv, NULL,
&child, -1, &newstdout, NULL, VIR_EXEC_CLEAR_CAPS) < 0)
return -1;
len = virFileReadLimFD(newstdout, MAX_MACHINES_OUTPUT_SIZE, &output);
if (len < 0) {
virReportSystemError(errno, "%s",
_("Unable to read QEMU supported CPU models"));
goto cleanup;
}
if (parse(output, count, cpus) < 0) {
virReportOOMError();
goto cleanup;
}
ret = 0;
cleanup:
VIR_FREE(output);
if (close(newstdout) < 0)
ret = -1;
rewait:
if (waitpid(child, &status, 0) != child) {
if (errno == EINTR)
goto rewait;
VIR_ERROR(_("Unexpected exit status from qemu %d pid %lu"),
WEXITSTATUS(status), (unsigned long)child);
ret = -1;
}
/* Check & log unexpected exit status, but don't fail,
* as there's really no need to throw an error if we did
* actually read a valid version number above */
if (WEXITSTATUS(status) != 0) {
VIR_WARN(_("Unexpected exit status '%d', qemu probably failed"),
WEXITSTATUS(status));
}
return ret;
}
static int
qemudCapsInitGuest(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;
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 || access(binary, X_OK) != 0) {
VIR_FREE(binary);
binary = virFindFileInPath(info->altbinary);
if (binary != NULL && access(binary, X_OK) != 0)
VIR_FREE(binary);
}
/* 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 == NULL || access(kvmbin, X_OK) != 0) {
VIR_FREE(kvmbin);
continue;
}
haskvm = 1;
if (!binary)
binary = kvmbin;
break;
}
}
if (access("/dev/kqemu", F_OK) == 0)
haskqemu = 1;
}
if (!binary)
return 0;
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 = !qemudGetOldMachines(hvm ? "hvm" : "xen", info->arch,
info->wordsize, binary, binary_mtime,
old_caps, &machines, &nmachines);
if (probe &&
qemudProbeMachineTypes(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 &&
qemudProbeCPUModels(binary, info->arch, &ncpus, NULL) == 0 &&
ncpus > 0 &&
!virCapabilitiesAddGuestFeature(guest, "cpuselection", 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 = !qemudGetOldMachines("hvm", info->arch, info->wordsize,
kvmbin, binary_mtime,
old_caps, &machines, &nmachines);
if (probe &&
qemudProbeMachineTypes(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);
}
return ret;
no_memory:
virReportOOMError();
error:
virCapabilitiesFreeMachines(machines, nmachines);
goto cleanup;
}
static int
qemudCapsInitCPU(virCapsPtr caps,
const char *arch)
{
virCPUDefPtr cpu = NULL;
union cpuData *data = NULL;
virNodeInfo nodeinfo;
int ret = -1;
if (VIR_ALLOC(cpu) < 0
|| !(cpu->arch = strdup(arch))) {
virReportOOMError();
goto error;
}
if (nodeGetInfo(NULL, &nodeinfo))
goto error;
cpu->type = VIR_CPU_TYPE_HOST;
cpu->sockets = nodeinfo.sockets;
cpu->cores = nodeinfo.cores;
cpu->threads = nodeinfo.threads;
if (!(data = cpuNodeData(arch))
|| cpuDecode(cpu, data, NULL, 0, NULL) < 0)
goto error;
caps->host.cpu = cpu;
ret = 0;
cleanup:
cpuDataFree(arch, data);
return ret;
error:
virCPUDefFree(cpu);
goto cleanup;
}
virCapsPtr qemudCapsInit(virCapsPtr old_caps) {
struct utsname utsname;
virCapsPtr caps;
int i;
char *xenner = NULL;
/* Really, this never fails - look at the man-page. */
uname (&utsname);
if ((caps = virCapabilitiesNew(utsname.machine,
1, 1)) == NULL)
goto no_memory;
/* Using KVM's mac prefix for QEMU too */
virCapabilitiesSetMacPrefix(caps, (unsigned char[]){ 0x52, 0x54, 0x00 });
/* Some machines have problematic NUMA toplogy causing
* unexpected failures. We don't want to break the QEMU
* driver in this scenario, so log errors & carry on
*/
if (nodeCapsInitNUMA(caps) < 0) {
virCapabilitiesFreeNUMAInfo(caps);
VIR_WARN0("Failed to query host NUMA topology, disabling NUMA capabilities");
}
if (old_caps == NULL || old_caps->host.cpu == NULL) {
if (qemudCapsInitCPU(caps, utsname.machine) < 0)
VIR_WARN0("Failed to get host CPU");
}
else {
caps->host.cpu = old_caps->host.cpu;
old_caps->host.cpu = NULL;
}
virCapabilitiesAddHostMigrateTransport(caps,
"tcp");
/* First the pure HVM guests */
for (i = 0 ; i < ARRAY_CARDINALITY(arch_info_hvm) ; i++)
if (qemudCapsInitGuest(caps, old_caps,
utsname.machine,
&arch_info_hvm[i], 1) < 0)
goto no_memory;
/* Then possibly the Xen paravirt guests (ie Xenner */
xenner = virFindFileInPath("xenner");
if (xenner != NULL && access(xenner, X_OK) == 0 &&
access("/dev/kvm", F_OK) == 0) {
for (i = 0 ; i < ARRAY_CARDINALITY(arch_info_xen) ; i++)
/* Allow Xen 32-on-32, 32-on-64 and 64-on-64 */
if (STREQ(arch_info_xen[i].arch, utsname.machine) ||
(STREQ(utsname.machine, "x86_64") &&
STREQ(arch_info_xen[i].arch, "i686"))) {
if (qemudCapsInitGuest(caps, old_caps,
utsname.machine,
&arch_info_xen[i], 0) < 0)
goto no_memory;
}
}
VIR_FREE(xenner);
/* QEMU Requires an emulator in the XML */
virCapabilitiesSetEmulatorRequired(caps);
return caps;
no_memory:
VIR_FREE(xenner);
virCapabilitiesFree(caps);
return NULL;
}
static unsigned long long qemudComputeCmdFlags(const char *help,
unsigned int version,
unsigned int is_kvm,
unsigned int kvm_version)
{
unsigned long long flags = 0;
if (strstr(help, "-no-kqemu"))
flags |= QEMUD_CMD_FLAG_KQEMU;
if (strstr(help, "-no-kvm"))
flags |= QEMUD_CMD_FLAG_KVM;
if (strstr(help, "-enable-kvm"))
flags |= QEMUD_CMD_FLAG_ENABLE_KVM;
if (strstr(help, "-no-reboot"))
flags |= QEMUD_CMD_FLAG_NO_REBOOT;
if (strstr(help, "-name"))
flags |= QEMUD_CMD_FLAG_NAME;
if (strstr(help, "-uuid"))
flags |= QEMUD_CMD_FLAG_UUID;
if (strstr(help, "-xen-domid"))
flags |= QEMUD_CMD_FLAG_XEN_DOMID;
else if (strstr(help, "-domid"))
flags |= QEMUD_CMD_FLAG_DOMID;
if (strstr(help, "-drive")) {
flags |= QEMUD_CMD_FLAG_DRIVE;
if (strstr(help, "cache=writethrough|writeback|none"))
flags |= QEMUD_CMD_FLAG_DRIVE_CACHE_V2;
if (strstr(help, "format="))
flags |= QEMUD_CMD_FLAG_DRIVE_FORMAT;
}
if (strstr(help, "-vga") && !strstr(help, "-std-vga"))
flags |= QEMUD_CMD_FLAG_VGA;
if (strstr(help, "boot=on"))
flags |= QEMUD_CMD_FLAG_DRIVE_BOOT;
if (strstr(help, "serial=s"))
flags |= QEMUD_CMD_FLAG_DRIVE_SERIAL;
if (strstr(help, "-pcidevice"))
flags |= QEMUD_CMD_FLAG_PCIDEVICE;
if (strstr(help, "-mem-path"))
flags |= QEMUD_CMD_FLAG_MEM_PATH;
if (strstr(help, "-chardev"))
flags |= QEMUD_CMD_FLAG_CHARDEV;
if (strstr(help, "-balloon"))
flags |= QEMUD_CMD_FLAG_BALLOON;
if (strstr(help, "-device"))
flags |= QEMUD_CMD_FLAG_DEVICE;
/* The trailing ' ' is important to avoid a bogus match */
if (strstr(help, "-rtc "))
flags |= QEMUD_CMD_FLAG_RTC;
/* to wit */
if (strstr(help, "-rtc-td-hack"))
flags |= QEMUD_CMD_FLAG_RTC_TD_HACK;
if (strstr(help, "-no-hpet"))
flags |= QEMUD_CMD_FLAG_NO_HPET;
if (strstr(help, "-no-kvm-pit-reinjection"))
flags |= QEMUD_CMD_FLAG_NO_KVM_PIT;
if (strstr(help, "-tdf"))
flags |= QEMUD_CMD_FLAG_TDF;
/* Keep disabled till we're actually ready to turn on netdev mode
* The plan is todo it in 0.13.0 QEMU, but lets wait & see... */
#if 0
if (strstr(help, "-netdev")) {
/* Disable -netdev on 0.12 since although it exists,
* the corresponding netdev_add/remove monitor commands
* do not, and we need them to be able todo hotplug */
if (version >= 13000)
flags |= QEMUD_CMD_FLAG_NETDEV;
}
#endif
if (strstr(help, "-sdl"))
flags |= QEMUD_CMD_FLAG_SDL;
if (strstr(help, "cores=") &&
strstr(help, "threads=") &&
strstr(help, "sockets="))
flags |= QEMUD_CMD_FLAG_SMP_TOPOLOGY;
if (version >= 9000)
flags |= QEMUD_CMD_FLAG_VNC_COLON;
if (is_kvm && (version >= 10000 || kvm_version >= 74))
flags |= QEMUD_CMD_FLAG_VNET_HDR;
if (is_kvm && strstr(help, ",vhost=")) {
flags |= QEMUD_CMD_FLAG_VNET_HOST;
}
/*
* Handling of -incoming arg with varying features
* -incoming tcp (kvm >= 79, qemu >= 0.10.0)
* -incoming exec (kvm >= 80, qemu >= 0.10.0)
* -incoming stdio (all earlier kvm)
*
* NB, there was a pre-kvm-79 'tcp' support, but it
* was broken, because it blocked the monitor console
* while waiting for data, so pretend it doesn't exist
*/
if (version >= 10000) {
flags |= QEMUD_CMD_FLAG_MIGRATE_QEMU_TCP;
flags |= QEMUD_CMD_FLAG_MIGRATE_QEMU_EXEC;
if (version >= 12000)
flags |= QEMUD_CMD_FLAG_MIGRATE_QEMU_UNIX;
} else if (kvm_version >= 79) {
flags |= QEMUD_CMD_FLAG_MIGRATE_QEMU_TCP;
if (kvm_version >= 80)
flags |= QEMUD_CMD_FLAG_MIGRATE_QEMU_EXEC;
} else if (kvm_version > 0) {
flags |= QEMUD_CMD_FLAG_MIGRATE_KVM_STDIO;
}
if (version >= 10000)
flags |= QEMUD_CMD_FLAG_0_10;
/* Keep disabled till we're actually ready to turn on JSON mode
* The plan is todo it in 0.13.0 QEMU, but lets wait & see... */
#if 0
if (version >= 13000)
flags |= QEMUD_CMD_FLAG_MONITOR_JSON;
#endif
return flags;
}
/* We parse the output of 'qemu -help' to get the QEMU
* version number. The first bit is easy, just parse
* 'QEMU PC emulator version x.y.z'.
*
* With qemu-kvm, however, that is followed by a string
* in parenthesis as follows:
* - qemu-kvm-x.y.z in stable releases
* - kvm-XX for kvm versions up to kvm-85
* - qemu-kvm-devel-XX for kvm version kvm-86 and later
*
* For qemu-kvm versions before 0.10.z, we need to detect
* the KVM version number for some features. With 0.10.z
* and later, we just need the QEMU version number and
* whether it is KVM QEMU or mainline QEMU.
*/
#define QEMU_VERSION_STR "QEMU PC emulator version"
#define QEMU_KVM_VER_PREFIX "(qemu-kvm-"
#define KVM_VER_PREFIX "(kvm-"
#define SKIP_BLANKS(p) do { while ((*(p) == ' ') || (*(p) == '\t')) (p)++; } while (0)
int qemudParseHelpStr(const char *qemu,
const char *help,
unsigned long long *flags,
unsigned int *version,
unsigned int *is_kvm,
unsigned int *kvm_version)
{
unsigned major, minor, micro;
const char *p = help;
*flags = *version = *is_kvm = *kvm_version = 0;
if (!STRPREFIX(p, QEMU_VERSION_STR))
goto fail;
p += strlen(QEMU_VERSION_STR);
SKIP_BLANKS(p);
major = virParseNumber(&p);
if (major == -1 || *p != '.')
goto fail;
++p;
minor = virParseNumber(&p);
if (major == -1 || *p != '.')
goto fail;
++p;
micro = virParseNumber(&p);
if (major == -1)
goto fail;
SKIP_BLANKS(p);
if (STRPREFIX(p, QEMU_KVM_VER_PREFIX)) {
*is_kvm = 1;
p += strlen(QEMU_KVM_VER_PREFIX);
} else if (STRPREFIX(p, KVM_VER_PREFIX)) {
int ret;
*is_kvm = 1;
p += strlen(KVM_VER_PREFIX);
ret = virParseNumber(&p);
if (ret == -1)
goto fail;
*kvm_version = ret;
}
*version = (major * 1000 * 1000) + (minor * 1000) + micro;
*flags = qemudComputeCmdFlags(help, *version, *is_kvm, *kvm_version);
qemudDebug("Version %u.%u.%u, cooked version %u, flags %u",
major, minor, micro, *version, *flags);
if (*kvm_version)
qemudDebug("KVM version %d detected", *kvm_version);
else if (*is_kvm)
qemudDebug("qemu-kvm version %u.%u.%u detected", major, minor, micro);
return 0;
fail:
p = strchr(help, '\n');
if (p)
p = strndup(help, p - help);
qemuReportError(VIR_ERR_INTERNAL_ERROR,
_("cannot parse %s version number in '%s'"),
qemu, p ? p : help);
VIR_FREE(p);
return -1;
}
int qemudExtractVersionInfo(const char *qemu,
unsigned int *retversion,
unsigned long long *retflags) {
const char *const qemuarg[] = { qemu, "-help", NULL };
const char *const qemuenv[] = { "LC_ALL=C", NULL };
pid_t child;
int newstdout = -1;
int ret = -1, status;
unsigned int version, is_kvm, kvm_version;
unsigned long long flags = 0;
if (retflags)
*retflags = 0;
if (retversion)
*retversion = 0;
if (virExec(qemuarg, qemuenv, NULL,
&child, -1, &newstdout, NULL, VIR_EXEC_CLEAR_CAPS) < 0)
return -1;
char *help = NULL;
enum { MAX_HELP_OUTPUT_SIZE = 1024*64 };
int len = virFileReadLimFD(newstdout, MAX_HELP_OUTPUT_SIZE, &help);
if (len < 0) {
virReportSystemError(errno,
_("Unable to read %s help output"), qemu);
goto cleanup2;
}
if (qemudParseHelpStr(qemu, help, &flags,
&version, &is_kvm, &kvm_version) == -1)
goto cleanup2;
if (retversion)
*retversion = version;
if (retflags)
*retflags = flags;
ret = 0;
cleanup2:
VIR_FREE(help);
if (close(newstdout) < 0)
ret = -1;
rewait:
if (waitpid(child, &status, 0) != child) {
if (errno == EINTR)
goto rewait;
VIR_ERROR(_("Unexpected exit status from qemu %d pid %lu"),
WEXITSTATUS(status), (unsigned long)child);
ret = -1;
}
/* Check & log unexpected exit status, but don't fail,
* as there's really no need to throw an error if we did
* actually read a valid version number above */
if (WEXITSTATUS(status) != 0) {
VIR_WARN(_("Unexpected exit status '%d', qemu probably failed"),
WEXITSTATUS(status));
}
return ret;
}
static void
uname_normalize (struct utsname *ut)
{
uname(ut);
/* Map i386, i486, i586 to i686. */
if (ut->machine[0] == 'i' &&
ut->machine[1] != '\0' &&
ut->machine[2] == '8' &&
ut->machine[3] == '6' &&
ut->machine[4] == '\0')
ut->machine[1] = '6';
}
int qemudExtractVersion(struct qemud_driver *driver) {
const char *binary;
struct stat sb;
struct utsname ut;
if (driver->qemuVersion > 0)
return 0;
uname_normalize(&ut);
if ((binary = virCapabilitiesDefaultGuestEmulator(driver->caps,
"hvm",
ut.machine,
"qemu")) == NULL)
return -1;
if (stat(binary, &sb) < 0) {
virReportSystemError(errno,
_("Cannot find QEMU binary %s"), binary);
return -1;
}
if (qemudExtractVersionInfo(binary, &driver->qemuVersion, NULL) < 0) {
return -1;
}
return 0;
}
/**
* qemudPhysIfaceConnect:
* @conn: pointer to virConnect object
* @net: pointer to he VM's interface description with direct device type
* @linkdev: The name of the physical interface to link the macvtap to
* @brmode: The mode to put the macvtap device into
*
* Returns a filedescriptor on success or -1 in case of error.
*/
int
qemudPhysIfaceConnect(virConnectPtr conn,
struct qemud_driver *driver,
virDomainNetDefPtr net,
char *linkdev,
int brmode,
unsigned long long qemuCmdFlags)
{
int rc;
#if WITH_MACVTAP
char *res_ifname = NULL;
int vnet_hdr = 0;
int err;
if (qemuCmdFlags & QEMUD_CMD_FLAG_VNET_HDR &&
net->model && STREQ(net->model, "virtio"))
vnet_hdr = 1;
rc = openMacvtapTap(net->ifname, net->mac, linkdev, brmode,
&res_ifname, vnet_hdr);
if (rc >= 0) {
VIR_FREE(net->ifname);
net->ifname = res_ifname;
}
if (rc >=0 && driver->macFilter) {
if ((err = networkAllowMacOnPort(driver, net->ifname, net->mac))) {
virReportSystemError(err,
_("failed to add ebtables rule to allow MAC address on '%s'"),
net->ifname);
}
}
if (rc >= 0) {
if ((net->filter) && (net->ifname)) {
err = virNWFilterInstantiateFilter(conn, net);
if (err) {
close(rc);
rc = -1;
delMacvtap(net->ifname);
}
}
}
#else
(void)conn;
(void)net;
(void)linkdev;
(void)brmode;
(void)qemuCmdFlags;
(void)driver;
qemuReportError(VIR_ERR_INTERNAL_ERROR,
"%s", _("No support for macvtap device"));
rc = -1;
#endif
return rc;
}
int
qemudNetworkIfaceConnect(virConnectPtr conn,
struct qemud_driver *driver,
virDomainNetDefPtr net,
unsigned long long qemuCmdFlags)
{
char *brname = NULL;
int err;
int tapfd = -1;
int vnet_hdr = 0;
int template_ifname = 0;
if (net->type == VIR_DOMAIN_NET_TYPE_NETWORK) {
int active, fail = 0;
virErrorPtr errobj;
virNetworkPtr network = virNetworkLookupByName(conn,
net->data.network.name);
if (!network)
return -1;
active = virNetworkIsActive(network);
if (active != 1) {
fail = 1;
if (active == 0)
qemuReportError(VIR_ERR_INTERNAL_ERROR,
_("Network '%s' is not active."),
net->data.network.name);
}
if (!fail) {
brname = virNetworkGetBridgeName(network);
if (brname == NULL)
fail = 1;
}
/* Make sure any above failure is preserved */
errobj = virSaveLastError();
virNetworkFree(network);
virSetError(errobj);
virFreeError(errobj);
if (fail)
return -1;
} else if (net->type == VIR_DOMAIN_NET_TYPE_BRIDGE) {
if (!(brname = strdup(net->data.bridge.brname))) {
virReportOOMError();
return -1;
}
} else {
qemuReportError(VIR_ERR_INTERNAL_ERROR,
_("Network type %d is not supported"), net->type);
return -1;
}
if (!driver->brctl && (err = brInit(&driver->brctl))) {
virReportSystemError(err, "%s",
_("cannot initialize bridge support"));
goto cleanup;
}
if (!net->ifname ||
STRPREFIX(net->ifname, "vnet") ||
strchr(net->ifname, '%')) {
VIR_FREE(net->ifname);
if (!(net->ifname = strdup("vnet%d"))) {
virReportOOMError();
goto cleanup;
}
/* avoid exposing vnet%d in dumpxml or error outputs */
template_ifname = 1;
}
if (qemuCmdFlags & QEMUD_CMD_FLAG_VNET_HDR &&
net->model && STREQ(net->model, "virtio"))
vnet_hdr = 1;
if ((err = brAddTap(driver->brctl, brname,
&net->ifname, vnet_hdr, &tapfd))) {
if (errno == ENOTSUP) {
/* In this particular case, give a better diagnostic. */
qemuReportError(VIR_ERR_INTERNAL_ERROR,
_("Failed to add tap interface to bridge. "
"%s is not a bridge device"), brname);
} else if (template_ifname) {
virReportSystemError(err,
_("Failed to add tap interface to bridge '%s'"),
brname);
} else {
virReportSystemError(err,
_("Failed to add tap interface '%s' to bridge '%s'"),
net->ifname, brname);
}
if (template_ifname)
VIR_FREE(net->ifname);
tapfd = -1;
}
if (driver->macFilter) {
if ((err = networkAllowMacOnPort(driver, net->ifname, net->mac))) {
virReportSystemError(err,
_("failed to add ebtables rule to allow MAC address on '%s'"),
net->ifname);
}
}
if (tapfd >= 0) {
if ((net->filter) && (net->ifname)) {
err = virNWFilterInstantiateFilter(conn, net);
if (err) {
close(tapfd);
tapfd = -1;
}
}
}
cleanup:
VIR_FREE(brname);
return tapfd;
}
int
qemudOpenVhostNet(virDomainNetDefPtr net,
unsigned long long qemuCmdFlags)
{
/* If qemu supports vhost-net mode (including the -netdev command
* option), the nic model is virtio, and we can open
* /dev/vhost_net, assume that vhost-net mode is available and
* return the fd to /dev/vhost_net. Otherwise, return -1.
*/
if (!(qemuCmdFlags & QEMUD_CMD_FLAG_VNET_HOST &&
qemuCmdFlags & QEMUD_CMD_FLAG_NETDEV &&
qemuCmdFlags & QEMUD_CMD_FLAG_DEVICE &&
net->model && STREQ(net->model, "virtio")))
return -1;
return open("/dev/vhost-net", O_RDWR, 0);
}
static int qemuDomainDeviceAliasIndex(virDomainDeviceInfoPtr info,
const char *prefix)
{
int idx;
if (!info->alias)
return -1;
if (!STRPREFIX(info->alias, prefix))
return -1;
if (virStrToLong_i(info->alias + strlen(prefix), NULL, 10, &idx) < 0)
return -1;
return idx;
}
int qemuDomainNetVLAN(virDomainNetDefPtr def)
{
return qemuDomainDeviceAliasIndex(&def->info, "net");
}
/* Names used before -drive existed */
static int qemuAssignDeviceDiskAliasLegacy(virDomainDiskDefPtr disk)
{
char *devname;
if (disk->device == VIR_DOMAIN_DISK_DEVICE_CDROM &&
STREQ(disk->dst, "hdc"))
devname = strdup("cdrom");
else
devname = strdup(disk->dst);
if (!devname) {
virReportOOMError();
return -1;
}
disk->info.alias = devname;
return 0;
}
char *qemuDeviceDriveHostAlias(virDomainDiskDefPtr disk,
unsigned long long qemudCmdFlags)
{
char *ret;
if (qemudCmdFlags & QEMUD_CMD_FLAG_DEVICE) {
if (virAsprintf(&ret, "%s%s", QEMU_DRIVE_HOST_PREFIX, disk->info.alias) < 0) {
virReportOOMError();
return NULL;
}
} else {
if (!(ret = strdup(disk->info.alias))) {
virReportOOMError();
return NULL;
}
}
return ret;
}
/* Names used before -drive supported the id= option */
static int qemuAssignDeviceDiskAliasFixed(virDomainDiskDefPtr disk)
{
int busid, devid;
int ret;
char *devname;
if (virDiskNameToBusDeviceIndex(disk, &busid, &devid) < 0) {
qemuReportError(VIR_ERR_INTERNAL_ERROR,
_("cannot convert disk '%s' to bus/device index"),
disk->dst);
return -1;
}
switch (disk->bus) {
case VIR_DOMAIN_DISK_BUS_IDE:
if (disk->device== VIR_DOMAIN_DISK_DEVICE_DISK)
ret = virAsprintf(&devname, "ide%d-hd%d", busid, devid);
else
ret = virAsprintf(&devname, "ide%d-cd%d", busid, devid);
break;
case VIR_DOMAIN_DISK_BUS_SCSI:
if (disk->device == VIR_DOMAIN_DISK_DEVICE_DISK)
ret = virAsprintf(&devname, "scsi%d-hd%d", busid, devid);
else
ret = virAsprintf(&devname, "scsi%d-cd%d", busid, devid);
break;
case VIR_DOMAIN_DISK_BUS_FDC:
ret = virAsprintf(&devname, "floppy%d", devid);
break;
case VIR_DOMAIN_DISK_BUS_VIRTIO:
ret = virAsprintf(&devname, "virtio%d", devid);
break;
case VIR_DOMAIN_DISK_BUS_XEN:
ret = virAsprintf(&devname, "xenblk%d", devid);
break;
default:
qemuReportError(VIR_ERR_NO_SUPPORT,
_("Unsupported disk name mapping for bus '%s'"),
virDomainDiskBusTypeToString(disk->bus));
return -1;
}
if (ret == -1) {
virReportOOMError();
return -1;
}
disk->info.alias = devname;
return 0;
}
/* Our custom -drive naming scheme used with id= */
static int qemuAssignDeviceDiskAliasCustom(virDomainDiskDefPtr disk)
{
const char *prefix = virDomainDiskBusTypeToString(disk->bus);
if (disk->info.type == VIR_DOMAIN_DEVICE_ADDRESS_TYPE_DRIVE) {
if (virAsprintf(&disk->info.alias, "%s%d-%d-%d", prefix,
disk->info.addr.drive.controller,
disk->info.addr.drive.bus,
disk->info.addr.drive.unit) < 0)
goto no_memory;
} else {
int idx = virDiskNameToIndex(disk->dst);
if (virAsprintf(&disk->info.alias, "%s-disk%d", prefix, idx) < 0)
goto no_memory;
}
return 0;
no_memory:
virReportOOMError();
return -1;
}
int
qemuAssignDeviceDiskAlias(virDomainDiskDefPtr def, unsigned long long qemuCmdFlags)
{
if (qemuCmdFlags & QEMUD_CMD_FLAG_DRIVE) {
if (qemuCmdFlags & QEMUD_CMD_FLAG_DEVICE)
return qemuAssignDeviceDiskAliasCustom(def);
else
return qemuAssignDeviceDiskAliasFixed(def);
} else {
return qemuAssignDeviceDiskAliasLegacy(def);
}
}
int
qemuAssignDeviceNetAlias(virDomainDefPtr def, virDomainNetDefPtr net, int idx)
{
if (idx == -1) {
int i;
idx = 0;
for (i = 0 ; i < def->nnets ; i++) {
int thisidx;
if ((thisidx = qemuDomainDeviceAliasIndex(&def->nets[i]->info, "net")) < 0) {
qemuReportError(VIR_ERR_INTERNAL_ERROR, "%s",
_("Unable to determine device index for network device"));
return -1;
}
if (thisidx >= idx)
idx = thisidx + 1;
}
}
if (virAsprintf(&net->info.alias, "net%d", idx) < 0) {
virReportOOMError();
return -1;
}
return 0;
}
int
qemuAssignDeviceHostdevAlias(virDomainDefPtr def, virDomainHostdevDefPtr hostdev, int idx)
{
if (idx == -1) {
int i;
idx = 0;
for (i = 0 ; i < def->nhostdevs ; i++) {
int thisidx;
if ((thisidx = qemuDomainDeviceAliasIndex(&def->hostdevs[i]->info, "hostdev")) < 0) {
qemuReportError(VIR_ERR_INTERNAL_ERROR, "%s",
_("Unable to determine device index for hostdevwork device"));
return -1;
}
if (thisidx >= idx)
idx = thisidx + 1;
}
}
if (virAsprintf(&hostdev->info.alias, "hostdev%d", idx) < 0) {
virReportOOMError();
return -1;
}
return 0;
}
int
qemuAssignDeviceControllerAlias(virDomainControllerDefPtr controller)
{
const char *prefix = virDomainControllerTypeToString(controller->type);
if (virAsprintf(&controller->info.alias, "%s%d", prefix,
controller->idx) < 0) {
virReportOOMError();
return -1;
}
return 0;
}
static int
qemuAssignDeviceAliases(virDomainDefPtr def, unsigned long long qemuCmdFlags)
{
int i;
for (i = 0; i < def->ndisks ; i++) {
if (qemuAssignDeviceDiskAlias(def->disks[i], qemuCmdFlags) < 0)
return -1;
}
if ((qemuCmdFlags & QEMUD_CMD_FLAG_NET_NAME) ||
(qemuCmdFlags & QEMUD_CMD_FLAG_DEVICE)) {
for (i = 0; i < def->nnets ; i++) {
if (qemuAssignDeviceNetAlias(def, def->nets[i], i) < 0)
return -1;
}
}
if (!(qemuCmdFlags & QEMUD_CMD_FLAG_DEVICE))
return 0;
for (i = 0; i < def->nsounds ; i++) {
if (virAsprintf(&def->sounds[i]->info.alias, "sound%d", i) < 0)
goto no_memory;
}
for (i = 0; i < def->nhostdevs ; i++) {
if (qemuAssignDeviceHostdevAlias(def, def->hostdevs[i], i) < 0)
return -1;
}
for (i = 0; i < def->nvideos ; i++) {
if (virAsprintf(&def->videos[i]->info.alias, "video%d", i) < 0)
goto no_memory;
}
for (i = 0; i < def->ncontrollers ; i++) {
if (qemuAssignDeviceControllerAlias(def->controllers[i]) < 0)
return -1;
}
for (i = 0; i < def->ninputs ; i++) {
if (virAsprintf(&def->inputs[i]->info.alias, "input%d", i) < 0)
goto no_memory;
}
for (i = 0; i < def->nparallels ; i++) {
if (virAsprintf(&def->parallels[i]->info.alias, "parallel%d", i) < 0)
goto no_memory;
}
for (i = 0; i < def->nserials ; i++) {
if (virAsprintf(&def->serials[i]->info.alias, "serial%d", i) < 0)
goto no_memory;
}
for (i = 0; i < def->nchannels ; i++) {
if (virAsprintf(&def->channels[i]->info.alias, "channel%d", i) < 0)
goto no_memory;
}
if (def->watchdog) {
if (virAsprintf(&def->watchdog->info.alias, "watchdog%d", 0) < 0)
goto no_memory;
}
return 0;
no_memory:
virReportOOMError();
return -1;
}
#define QEMU_PCI_ADDRESS_LAST_SLOT 31
struct _qemuDomainPCIAddressSet {
virHashTablePtr used;
int nextslot;
/* XXX add domain, bus later when QEMU allows > 1 */
};
static char *qemuPCIAddressAsString(virDomainDeviceInfoPtr dev)
{
char *addr;
if (dev->addr.pci.domain != 0 ||
dev->addr.pci.bus != 0) {
qemuReportError(VIR_ERR_INTERNAL_ERROR, "%s",
_("Only PCI domain 0 and bus 0 are available"));
return NULL;
}
if (virAsprintf(&addr, "%d:%d:%d",
dev->addr.pci.domain,
dev->addr.pci.bus,
dev->addr.pci.slot) < 0) {
virReportOOMError();
return NULL;
}
return addr;
}
static int qemuCollectPCIAddress(virDomainDefPtr def ATTRIBUTE_UNUSED,
virDomainDeviceInfoPtr dev,
void *opaque)
{
qemuDomainPCIAddressSetPtr addrs = opaque;
if (dev->type == VIR_DOMAIN_DEVICE_ADDRESS_TYPE_PCI) {
char *addr = qemuPCIAddressAsString(dev);
VIR_DEBUG("Remembering PCI addr %s", addr);
if (virHashAddEntry(addrs->used, addr, addr) < 0) {
VIR_FREE(addr);
return -1;
}
}
return 0;
}
qemuDomainPCIAddressSetPtr qemuDomainPCIAddressSetCreate(virDomainDefPtr def)
{
qemuDomainPCIAddressSetPtr addrs;
if (VIR_ALLOC(addrs) < 0)
goto no_memory;
if (!(addrs->used = virHashCreate(10)))
goto no_memory;
if (virDomainDeviceInfoIterate(def, qemuCollectPCIAddress, addrs) < 0)
goto error;
return addrs;
no_memory:
virReportOOMError();
error:
qemuDomainPCIAddressSetFree(addrs);
return NULL;
}
int qemuDomainPCIAddressReserveAddr(qemuDomainPCIAddressSetPtr addrs,
virDomainDeviceInfoPtr dev)
{
char *addr;
addr = qemuPCIAddressAsString(dev);
if (!addr)
return -1;
VIR_DEBUG("Reserving PCI addr %s", addr);
if (virHashLookup(addrs->used, addr)) {
qemuReportError(VIR_ERR_INTERNAL_ERROR,
_("unable to reserve PCI address %s"), addr);
VIR_FREE(addr);
return -1;
}
if (virHashAddEntry(addrs->used, addr, addr)) {
VIR_FREE(addr);
return -1;
}
if (dev->addr.pci.slot > addrs->nextslot)
addrs->nextslot = dev->addr.pci.slot + 1;
return 0;
}
int qemuDomainPCIAddressReserveSlot(qemuDomainPCIAddressSetPtr addrs,
int slot)
{
virDomainDeviceInfo dev;
dev.addr.pci.domain = 0;
dev.addr.pci.bus = 0;
dev.addr.pci.slot = slot;
return qemuDomainPCIAddressReserveAddr(addrs, &dev);
}
int qemuDomainPCIAddressEnsureAddr(qemuDomainPCIAddressSetPtr addrs,
virDomainDeviceInfoPtr dev)
{
int ret = 0;
if (dev->type == VIR_DOMAIN_DEVICE_ADDRESS_TYPE_PCI)
ret = qemuDomainPCIAddressReserveAddr(addrs, dev);
else
ret = qemuDomainPCIAddressSetNextAddr(addrs, dev);
return ret;
}
static void qemuDomainPCIAddressSetFreeEntry(void *payload, const char *name ATTRIBUTE_UNUSED)
{
VIR_FREE(payload);
}
int qemuDomainPCIAddressReleaseAddr(qemuDomainPCIAddressSetPtr addrs,
virDomainDeviceInfoPtr dev)
{
char *addr;
int ret;
addr = qemuPCIAddressAsString(dev);
if (!addr)
return -1;
ret = virHashRemoveEntry(addrs->used, addr, qemuDomainPCIAddressSetFreeEntry);
VIR_FREE(addr);
return ret;
}
void qemuDomainPCIAddressSetFree(qemuDomainPCIAddressSetPtr addrs)
{
if (!addrs)
return;
virHashFree(addrs->used, qemuDomainPCIAddressSetFreeEntry);
VIR_FREE(addrs);
}
int qemuDomainPCIAddressSetNextAddr(qemuDomainPCIAddressSetPtr addrs,
virDomainDeviceInfoPtr dev)
{
int i;
for (i = addrs->nextslot ; i <= QEMU_PCI_ADDRESS_LAST_SLOT ; i++) {
virDomainDeviceInfo maybe;
char *addr;
memset(&maybe, 0, sizeof(maybe));
maybe.addr.pci.domain = 0;
maybe.addr.pci.bus = 0;
maybe.addr.pci.slot = i;
addr = qemuPCIAddressAsString(&maybe);
VIR_DEBUG("Allocating PCI addr %s", addr);
if (virHashLookup(addrs->used, addr)) {
VIR_FREE(addr);
continue;
}
if (virHashAddEntry(addrs->used, addr, addr) < 0) {
VIR_FREE(addr);
return -1;
}
dev->type = VIR_DOMAIN_DEVICE_ADDRESS_TYPE_PCI;
dev->addr.pci.domain = 0;
dev->addr.pci.bus = 0;
dev->addr.pci.slot = i;
addrs->nextslot = i + 1;
return 0;
}
qemuReportError(VIR_ERR_INTERNAL_ERROR,
"%s", _("No more available PCI addresses"));
return -1;
}
int
qemuAssignDevicePCISlots(virDomainDefPtr def, qemuDomainPCIAddressSetPtr addrs)
{
int i;
/* Host bridge */
if (qemuDomainPCIAddressReserveSlot(addrs, 0) < 0)
goto error;
/* PIIX3 (ISA bridge, IDE controller, something else unknown, USB controller)
* at slot 1....reserve it later
*/
/* VGA at slot 2.... reserve it later */
/* VirtIO Balloon */
if (qemuDomainPCIAddressReserveSlot(addrs, 3) < 0)
goto error;
for (i = 0; i < def->ndisks ; i++) {
if (def->disks[i]->info.type != VIR_DOMAIN_DEVICE_ADDRESS_TYPE_NONE)
continue;
/* Only VirtIO disks use PCI addrs */
if (def->disks[i]->bus != VIR_DOMAIN_DISK_BUS_VIRTIO)
continue;
if (qemuDomainPCIAddressSetNextAddr(addrs, &def->disks[i]->info) < 0)
goto error;
}
for (i = 0; i < def->nnets ; i++) {
if (def->nets[i]->info.type != VIR_DOMAIN_DEVICE_ADDRESS_TYPE_NONE)
continue;
if (qemuDomainPCIAddressSetNextAddr(addrs, &def->nets[i]->info) < 0)
goto error;
}
for (i = 0; i < def->nsounds ; i++) {
if (def->sounds[i]->info.type != VIR_DOMAIN_DEVICE_ADDRESS_TYPE_NONE)
continue;
/* Skip ISA sound card, and PCSPK */
if (def->sounds[i]->model == VIR_DOMAIN_SOUND_MODEL_SB16 ||
def->sounds[i]->model == VIR_DOMAIN_SOUND_MODEL_PCSPK)
continue;
if (qemuDomainPCIAddressSetNextAddr(addrs, &def->sounds[i]->info) < 0)
goto error;
}
for (i = 0; i < def->nhostdevs ; i++) {
if (def->hostdevs[i]->info.type != VIR_DOMAIN_DEVICE_ADDRESS_TYPE_NONE)
continue;
if (def->hostdevs[i]->mode != VIR_DOMAIN_HOSTDEV_MODE_SUBSYS ||
def->hostdevs[i]->source.subsys.type != VIR_DOMAIN_HOSTDEV_SUBSYS_TYPE_PCI)
continue;
if (qemuDomainPCIAddressSetNextAddr(addrs, &def->hostdevs[i]->info) < 0)
goto error;
}
for (i = 0; i < def->nvideos ; i++) {
/* First VGA is hardcoded slot=2 */
if (i == 0) {
if (def->videos[i]->info.type == VIR_DOMAIN_DEVICE_ADDRESS_TYPE_PCI) {
if (def->videos[i]->info.addr.pci.domain != 0 ||
def->videos[i]->info.addr.pci.bus != 0 ||
def->videos[i]->info.addr.pci.slot != 2 ||
def->videos[i]->info.addr.pci.function != 0) {
qemuReportError(VIR_ERR_INTERNAL_ERROR, "%s",
_("Primary video card must have PCI address 0:0:2.0"));
goto error;
}
} else {
def->videos[i]->info.type = VIR_DOMAIN_DEVICE_ADDRESS_TYPE_PCI;
def->videos[i]->info.addr.pci.domain = 0;
def->videos[i]->info.addr.pci.bus = 0;
def->videos[i]->info.addr.pci.slot = 2;
def->videos[i]->info.addr.pci.function = 0;
if (qemuDomainPCIAddressReserveSlot(addrs, 2) < 0)
goto error;
}
} else {
if (def->videos[i]->info.type != VIR_DOMAIN_DEVICE_ADDRESS_TYPE_NONE)
continue;
if (qemuDomainPCIAddressSetNextAddr(addrs, &def->videos[i]->info) < 0)
goto error;
}
}
for (i = 0; i < def->ncontrollers ; i++) {
/* FDC lives behind the ISA bridge */
if (def->controllers[i]->type == VIR_DOMAIN_CONTROLLER_TYPE_FDC)
continue;
/* First IDE controller lives on the PIIX3 at slot=1, function=1 */
if (def->controllers[i]->type == VIR_DOMAIN_CONTROLLER_TYPE_IDE &&
def->controllers[i]->idx == 0) {
if (def->controllers[i]->info.type == VIR_DOMAIN_DEVICE_ADDRESS_TYPE_PCI) {
if (def->controllers[i]->info.addr.pci.domain != 0 ||
def->controllers[i]->info.addr.pci.bus != 0 ||
def->controllers[i]->info.addr.pci.slot != 1 ||
def->controllers[i]->info.addr.pci.function != 1) {
qemuReportError(VIR_ERR_INTERNAL_ERROR, "%s",
_("Primary IDE controller must have PCI address 0:0:1.1"));
goto error;
}
} else {
def->controllers[i]->info.type = VIR_DOMAIN_DEVICE_ADDRESS_TYPE_PCI;
def->controllers[i]->info.addr.pci.domain = 0;
def->controllers[i]->info.addr.pci.bus = 0;
def->controllers[i]->info.addr.pci.slot = 1;
def->controllers[i]->info.addr.pci.function = 1;
if (qemuDomainPCIAddressReserveSlot(addrs, 1) < 0)
goto error;
}
} else {
if (def->controllers[i]->info.type != VIR_DOMAIN_DEVICE_ADDRESS_TYPE_NONE)
continue;
if (qemuDomainPCIAddressSetNextAddr(addrs, &def->controllers[i]->info) < 0)
goto error;
}
}
for (i = 0; i < def->ninputs ; i++) {
/* Nada - none are PCI based (yet) */
}
for (i = 0; i < def->nparallels ; i++) {
/* Nada - none are PCI based (yet) */
}
for (i = 0; i < def->nserials ; i++) {
/* Nada - none are PCI based (yet) */
}
for (i = 0; i < def->nchannels ; i++) {
/* Nada - none are PCI based (yet) */
}
if (def->watchdog &&
def->watchdog->info.type == VIR_DOMAIN_DEVICE_ADDRESS_TYPE_NONE) {
if (qemuDomainPCIAddressSetNextAddr(addrs, &def->watchdog->info) < 0)
goto error;
}
return 0;
error:
return -1;
}
static int
qemuBuildDeviceAddressStr(virBufferPtr buf,
virDomainDeviceInfoPtr info)
{
if (info->type == VIR_DOMAIN_DEVICE_ADDRESS_TYPE_PCI) {
if (info->addr.pci.domain != 0) {
qemuReportError(VIR_ERR_INTERNAL_ERROR, "%s",
_("Only PCI device addresses with domain=0 are supported"));
return -1;
}
if (info->addr.pci.bus != 0) {
qemuReportError(VIR_ERR_INTERNAL_ERROR, "%s",
_("Only PCI device addresses with bus=0 are supported"));
return -1;
}
if (info->addr.pci.function != 0) {
qemuReportError(VIR_ERR_INTERNAL_ERROR, "%s",
_("Only PCI device addresses with function=0 are supported"));
return -1;
}
/* XXX
* When QEMU grows support for > 1 PCI bus, then pci.0 changes
* to pci.1, pci.2, etc
* When QEMU grows support for > 1 PCI domain, then pci.0 change
* to pciNN.0 where NN is the domain number
*/
virBufferVSprintf(buf, ",bus=pci.0,addr=0x%x", info->addr.pci.slot);
}
return 0;
}
#define QEMU_SERIAL_PARAM_ACCEPTED_CHARS \
"abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789-_"
static int
qemuSafeSerialParamValue(const char *value)
{
if (strspn(value, QEMU_SERIAL_PARAM_ACCEPTED_CHARS) != strlen (value)) {
qemuReportError(VIR_ERR_INTERNAL_ERROR,
_("driver serial '%s' contains unsafe characters"),
value);
return -1;
}
return 0;
}
char *
qemuBuildDriveStr(virDomainDiskDefPtr disk,
int bootable,
unsigned long long qemuCmdFlags)
{
virBuffer opt = VIR_BUFFER_INITIALIZER;
const char *bus = virDomainDiskQEMUBusTypeToString(disk->bus);
int idx = virDiskNameToIndex(disk->dst);
int busid = -1, unitid = -1;
if (idx < 0) {
qemuReportError(VIR_ERR_INTERNAL_ERROR,
_("unsupported disk type '%s'"), disk->dst);
goto error;
}
switch (disk->bus) {
case VIR_DOMAIN_DISK_BUS_SCSI:
if (disk->info.type != VIR_DOMAIN_DEVICE_ADDRESS_TYPE_DRIVE) {
qemuReportError(VIR_ERR_INTERNAL_ERROR, "%s",
_("unexpected address type for scsi disk"));
goto error;
}
/* Setting bus= attr for SCSI drives, causes a controller
* to be created. Yes this is slightly odd. It is not possible
* to have > 1 bus on a SCSI controller (yet). */
if (disk->info.addr.drive.bus != 0) {
qemuReportError(VIR_ERR_INTERNAL_ERROR,
"%s", _("SCSI controller only supports 1 bus"));
goto error;
}
busid = disk->info.addr.drive.controller;
unitid = disk->info.addr.drive.unit;
break;
case VIR_DOMAIN_DISK_BUS_IDE:
if (disk->info.type != VIR_DOMAIN_DEVICE_ADDRESS_TYPE_DRIVE) {
qemuReportError(VIR_ERR_INTERNAL_ERROR, "%s",
_("unexpected address type for ide disk"));
goto error;
}
/* We can only have 1 IDE controller (currently) */
if (disk->info.addr.drive.controller != 0) {
qemuReportError(VIR_ERR_INTERNAL_ERROR,
_("Only 1 %s controller is supported"), bus);
goto error;
}
busid = disk->info.addr.drive.bus;
unitid = disk->info.addr.drive.unit;
break;
case VIR_DOMAIN_DISK_BUS_FDC:
if (disk->info.type != VIR_DOMAIN_DEVICE_ADDRESS_TYPE_DRIVE) {
qemuReportError(VIR_ERR_INTERNAL_ERROR, "%s",
_("unexpected address type for fdc disk"));
goto error;
}
/* We can only have 1 FDC controller (currently) */
if (disk->info.addr.drive.controller != 0) {
qemuReportError(VIR_ERR_INTERNAL_ERROR,
_("Only 1 %s controller is supported"), bus);
goto error;
}
/* We can only have 1 FDC bus (currently) */
if (disk->info.addr.drive.bus != 0) {
qemuReportError(VIR_ERR_INTERNAL_ERROR,
_("Only 1 %s bus is supported"), bus);
goto error;
}
unitid = disk->info.addr.drive.unit;
break;
case VIR_DOMAIN_DISK_BUS_VIRTIO:
/* Each virtio drive is a separate PCI device, no unit/busid or index */
idx = -1;
break;
case VIR_DOMAIN_DISK_BUS_XEN:
/* Xen has no address type currently, so assign based on index */
break;
}
if (disk->src) {
if (disk->type == VIR_DOMAIN_DISK_TYPE_DIR) {
/* QEMU only supports magic FAT format for now */
if (disk->driverType &&
STRNEQ(disk->driverType, "fat")) {
qemuReportError(VIR_ERR_INTERNAL_ERROR,
_("unsupported disk driver type for '%s'"),
disk->driverType);
goto error;
}
if (!disk->readonly) {
qemuReportError(VIR_ERR_INTERNAL_ERROR, "%s",
_("cannot create virtual FAT disks in read-write mode"));
goto error;
}
if (disk->device == VIR_DOMAIN_DISK_DEVICE_FLOPPY)
virBufferVSprintf(&opt, "file=fat:floppy:%s,", disk->src);
else
virBufferVSprintf(&opt, "file=fat:%s,", disk->src);
} else {
virBufferVSprintf(&opt, "file=%s,", disk->src);
}
}
if (qemuCmdFlags & QEMUD_CMD_FLAG_DEVICE)
virBufferAddLit(&opt, "if=none");
else
virBufferVSprintf(&opt, "if=%s", bus);
if (disk->device == VIR_DOMAIN_DISK_DEVICE_CDROM)
virBufferAddLit(&opt, ",media=cdrom");
if (qemuCmdFlags & QEMUD_CMD_FLAG_DEVICE) {
virBufferVSprintf(&opt, ",id=%s%s", QEMU_DRIVE_HOST_PREFIX, disk->info.alias);
} else {
if (busid == -1 && unitid == -1) {
if (idx != -1)
virBufferVSprintf(&opt, ",index=%d", idx);
} else {
if (busid != -1)
virBufferVSprintf(&opt, ",bus=%d", busid);
if (unitid != -1)
virBufferVSprintf(&opt, ",unit=%d", unitid);
}
}
if (bootable &&
disk->device == VIR_DOMAIN_DISK_DEVICE_DISK)
virBufferAddLit(&opt, ",boot=on");
if (disk->readonly &&
qemuCmdFlags & QEMUD_CMD_FLAG_DEVICE)
virBufferAddLit(&opt, ",readonly=on");
if (disk->driverType && *disk->driverType != '\0' &&
disk->type != VIR_DOMAIN_DISK_TYPE_DIR &&
qemuCmdFlags & QEMUD_CMD_FLAG_DRIVE_FORMAT)
virBufferVSprintf(&opt, ",format=%s", disk->driverType);
if (disk->serial &&
(qemuCmdFlags & QEMUD_CMD_FLAG_DRIVE_SERIAL)) {
if (qemuSafeSerialParamValue(disk->serial) < 0)
goto error;
virBufferVSprintf(&opt, ",serial=%s", disk->serial);
}
if (disk->cachemode) {
const char *mode =
(qemuCmdFlags & QEMUD_CMD_FLAG_DRIVE_CACHE_V2) ?
qemuDiskCacheV2TypeToString(disk->cachemode) :
qemuDiskCacheV1TypeToString(disk->cachemode);
virBufferVSprintf(&opt, ",cache=%s", mode);
} else if (disk->shared && !disk->readonly) {
virBufferAddLit(&opt, ",cache=off");
}
if (qemuCmdFlags & QEMUD_CMD_FLAG_MONITOR_JSON) {
if (disk->error_policy) {
virBufferVSprintf(&opt, ",werror=%s,rerror=%s",
virDomainDiskErrorPolicyTypeToString(disk->error_policy),
virDomainDiskErrorPolicyTypeToString(disk->error_policy));
}
}
if (virBufferError(&opt)) {
virReportOOMError();
goto error;
}
return virBufferContentAndReset(&opt);
error:
virBufferFreeAndReset(&opt);
return NULL;
}
char *
qemuBuildDriveDevStr(virDomainDiskDefPtr disk)
{
virBuffer opt = VIR_BUFFER_INITIALIZER;
const char *bus = virDomainDiskQEMUBusTypeToString(disk->bus);
int idx = virDiskNameToIndex(disk->dst);
if (idx < 0) {
qemuReportError(VIR_ERR_INTERNAL_ERROR,
_("unsupported disk type '%s'"), disk->dst);
goto error;
}
switch (disk->bus) {
case VIR_DOMAIN_DISK_BUS_IDE:
virBufferAddLit(&opt, "ide-drive");
virBufferVSprintf(&opt, ",bus=ide.%d,unit=%d",
disk->info.addr.drive.bus,
disk->info.addr.drive.unit);
break;
case VIR_DOMAIN_DISK_BUS_SCSI:
virBufferAddLit(&opt, "scsi-disk");
virBufferVSprintf(&opt, ",bus=scsi%d.%d,scsi-id=%d",
disk->info.addr.drive.controller,
disk->info.addr.drive.bus,
disk->info.addr.drive.unit);
break;
case VIR_DOMAIN_DISK_BUS_VIRTIO:
virBufferAddLit(&opt, "virtio-blk-pci");
qemuBuildDeviceAddressStr(&opt, &disk->info);
break;
case VIR_DOMAIN_DISK_BUS_USB:
virBufferAddLit(&opt, "usb-storage");
break;
default:
qemuReportError(VIR_ERR_INTERNAL_ERROR,
_("unsupported disk bus '%s' with device setup"), bus);
goto error;
}
virBufferVSprintf(&opt, ",drive=%s%s", QEMU_DRIVE_HOST_PREFIX, disk->info.alias);
virBufferVSprintf(&opt, ",id=%s", disk->info.alias);
if (virBufferError(&opt)) {
virReportOOMError();
goto error;
}
return virBufferContentAndReset(&opt);
error:
virBufferFreeAndReset(&opt);
return NULL;
}
char *
qemuBuildControllerDevStr(virDomainControllerDefPtr def)
{
virBuffer buf = VIR_BUFFER_INITIALIZER;
switch (def->type) {
case VIR_DOMAIN_CONTROLLER_TYPE_SCSI:
virBufferAddLit(&buf, "lsi");
virBufferVSprintf(&buf, ",id=scsi%d", def->idx);
break;
case VIR_DOMAIN_CONTROLLER_TYPE_VIRTIO_SERIAL:
if (def->info.type == VIR_DOMAIN_DEVICE_ADDRESS_TYPE_PCI) {
virBufferAddLit(&buf, "virtio-serial-pci");
} else {
virBufferAddLit(&buf, "virtio-serial");
}
virBufferVSprintf(&buf, ",id=" QEMU_VIRTIO_SERIAL_PREFIX "%d",
def->idx);
if (def->opts.vioserial.ports != -1) {
virBufferVSprintf(&buf, ",max_ports=%d",
def->opts.vioserial.ports);
}
if (def->opts.vioserial.vectors != -1) {
virBufferVSprintf(&buf, ",vectors=%d",
def->opts.vioserial.vectors);
}
break;
/* We always get an IDE controller, whether we want it or not. */
case VIR_DOMAIN_CONTROLLER_TYPE_IDE:
default:
goto error;
}
if (qemuBuildDeviceAddressStr(&buf, &def->info) < 0)
goto error;
if (virBufferError(&buf)) {
virReportOOMError();
goto error;
}
return virBufferContentAndReset(&buf);
error:
virBufferFreeAndReset(&buf);
return NULL;
}
char *
qemuBuildNicStr(virDomainNetDefPtr net,
const char *prefix,
int vlan)
{
char *str;
if (virAsprintf(&str,
"%smacaddr=%02x:%02x:%02x:%02x:%02x:%02x,vlan=%d%s%s%s%s",
prefix ? prefix : "",
net->mac[0], net->mac[1],
net->mac[2], net->mac[3],
net->mac[4], net->mac[5],
vlan,
(net->model ? ",model=" : ""),
(net->model ? net->model : ""),
(net->info.alias ? ",name=" : ""),
(net->info.alias ? net->info.alias : "")) < 0) {
virReportOOMError();
return NULL;
}
return str;
}
char *
qemuBuildNicDevStr(virDomainNetDefPtr net, int vlan)
{
virBuffer buf = VIR_BUFFER_INITIALIZER;
const char *nic;
if (!net->model) {
nic = "rtl8139";
} else if (STREQ(net->model, "virtio")) {
nic = "virtio-net-pci";
} else {
nic = net->model;
}
virBufferAdd(&buf, nic, strlen(nic));
if (vlan == -1)
virBufferVSprintf(&buf, ",netdev=host%s", net->info.alias);
else
virBufferVSprintf(&buf, ",vlan=%d", vlan);
virBufferVSprintf(&buf, ",id=%s", net->info.alias);
virBufferVSprintf(&buf, ",mac=%02x:%02x:%02x:%02x:%02x:%02x",
net->mac[0], net->mac[1],
net->mac[2], net->mac[3],
net->mac[4], net->mac[5]);
if (qemuBuildDeviceAddressStr(&buf, &net->info) < 0)
goto error;
if (virBufferError(&buf)) {
virReportOOMError();
goto error;
}
return virBufferContentAndReset(&buf);
error:
virBufferFreeAndReset(&buf);
return NULL;
}
char *
qemuBuildHostNetStr(virDomainNetDefPtr net,
char type_sep,
int vlan,
const char *tapfd,
const char *vhostfd)
{
virBuffer buf = VIR_BUFFER_INITIALIZER;
switch (net->type) {
case VIR_DOMAIN_NET_TYPE_NETWORK:
case VIR_DOMAIN_NET_TYPE_BRIDGE:
case VIR_DOMAIN_NET_TYPE_DIRECT:
virBufferAddLit(&buf, "tap");
virBufferVSprintf(&buf, "%cfd=%s", type_sep, tapfd);
type_sep = ',';
break;
case VIR_DOMAIN_NET_TYPE_ETHERNET:
virBufferAddLit(&buf, "tap");
if (net->ifname) {
virBufferVSprintf(&buf, "%cifname=%s", type_sep, net->ifname);
type_sep = ',';
}
if (net->data.ethernet.script) {
virBufferVSprintf(&buf, "%cscript=%s", type_sep,
net->data.ethernet.script);
type_sep = ',';
}
break;
case VIR_DOMAIN_NET_TYPE_CLIENT:
case VIR_DOMAIN_NET_TYPE_SERVER:
case VIR_DOMAIN_NET_TYPE_MCAST:
virBufferAddLit(&buf, "socket");
switch (net->type) {
case VIR_DOMAIN_NET_TYPE_CLIENT:
virBufferVSprintf(&buf, "%cconnect=%s:%d",
type_sep,
net->data.socket.address,
net->data.socket.port);
break;
case VIR_DOMAIN_NET_TYPE_SERVER:
virBufferVSprintf(&buf, "%clisten=%s:%d",
type_sep,
net->data.socket.address,
net->data.socket.port);
break;
case VIR_DOMAIN_NET_TYPE_MCAST:
virBufferVSprintf(&buf, "%cmcast=%s:%d",
type_sep,
net->data.socket.address,
net->data.socket.port);
break;
case VIR_DOMAIN_NET_TYPE_USER:
case VIR_DOMAIN_NET_TYPE_ETHERNET:
case VIR_DOMAIN_NET_TYPE_NETWORK:
case VIR_DOMAIN_NET_TYPE_BRIDGE:
case VIR_DOMAIN_NET_TYPE_INTERNAL:
case VIR_DOMAIN_NET_TYPE_DIRECT:
case VIR_DOMAIN_NET_TYPE_LAST:
break;
}
type_sep = ',';
break;
case VIR_DOMAIN_NET_TYPE_USER:
default:
virBufferAddLit(&buf, "user");
break;
}
if (vlan >= 0) {
virBufferVSprintf(&buf, "%cvlan=%d", type_sep, vlan);
if (net->info.alias)
virBufferVSprintf(&buf, ",name=host%s",
net->info.alias);
} else {
virBufferVSprintf(&buf, "%cid=host%s",
type_sep, net->info.alias);
}
if (vhostfd && *vhostfd) {
virBufferVSprintf(&buf, ",vhost=on,vhostfd=%s", vhostfd);
}
if (virBufferError(&buf)) {
virBufferFreeAndReset(&buf);
virReportOOMError();
return NULL;
}
return virBufferContentAndReset(&buf);
}
char *
qemuBuildWatchdogDevStr(virDomainWatchdogDefPtr dev)
{
virBuffer buf = VIR_BUFFER_INITIALIZER;
const char *model = virDomainWatchdogModelTypeToString(dev->model);
if (!model) {
qemuReportError(VIR_ERR_INTERNAL_ERROR,
"%s", _("missing watchdog model"));
goto error;
}
virBufferVSprintf(&buf, "%s", model);
virBufferVSprintf(&buf, ",id=%s", dev->info.alias);
if (qemuBuildDeviceAddressStr(&buf, &dev->info) < 0)
goto error;
if (virBufferError(&buf)) {
virReportOOMError();
goto error;
}
return virBufferContentAndReset(&buf);
error:
virBufferFreeAndReset(&buf);
return NULL;
}
char *
qemuBuildUSBInputDevStr(virDomainInputDefPtr dev)
{
virBuffer buf = VIR_BUFFER_INITIALIZER;
virBufferVSprintf(&buf, "%s",
dev->type == VIR_DOMAIN_INPUT_TYPE_MOUSE ?
"usb-mouse" : "usb-tablet");
virBufferVSprintf(&buf, ",id=%s", dev->info.alias);
if (virBufferError(&buf)) {
virReportOOMError();
goto error;
}
return virBufferContentAndReset(&buf);
error:
virBufferFreeAndReset(&buf);
return NULL;
}
char *
qemuBuildSoundDevStr(virDomainSoundDefPtr sound)
{
virBuffer buf = VIR_BUFFER_INITIALIZER;
const char *model = virDomainSoundModelTypeToString(sound->model);
if (!model) {
qemuReportError(VIR_ERR_INTERNAL_ERROR,
"%s", _("invalid sound model"));
goto error;
}
/* Hack for 2 wierdly unusal devices name in QEMU */
if (STREQ(model, "es1370"))
model = "ES1370";
else if (STREQ(model, "ac97"))
model = "AC97";
virBufferVSprintf(&buf, "%s", model);
virBufferVSprintf(&buf, ",id=%s", sound->info.alias);
if (qemuBuildDeviceAddressStr(&buf, &sound->info) < 0)
goto error;
if (virBufferError(&buf)) {
virReportOOMError();
goto error;
}
return virBufferContentAndReset(&buf);
error:
virBufferFreeAndReset(&buf);
return NULL;
}
char *
qemuBuildPCIHostdevDevStr(virDomainHostdevDefPtr dev)
{
virBuffer buf = VIR_BUFFER_INITIALIZER;
virBufferAddLit(&buf, "pci-assign");
virBufferVSprintf(&buf, ",host=%.2x:%.2x.%.1x",
dev->source.subsys.u.pci.bus,
dev->source.subsys.u.pci.slot,
dev->source.subsys.u.pci.function);
virBufferVSprintf(&buf, ",id=%s", dev->info.alias);
if (qemuBuildDeviceAddressStr(&buf, &dev->info) < 0)
goto error;
if (virBufferError(&buf)) {
virReportOOMError();
goto error;
}
return virBufferContentAndReset(&buf);
error:
virBufferFreeAndReset(&buf);
return NULL;
}
char *
qemuBuildPCIHostdevPCIDevStr(virDomainHostdevDefPtr dev)
{
char *ret = NULL;
if (virAsprintf(&ret, "host=%.2x:%.2x.%.1x",
dev->source.subsys.u.pci.bus,
dev->source.subsys.u.pci.slot,
dev->source.subsys.u.pci.function) < 0)
virReportOOMError();
return ret;
}
char *
qemuBuildUSBHostdevDevStr(virDomainHostdevDefPtr dev)
{
char *ret = NULL;
if (!dev->source.subsys.u.usb.bus &&
!dev->source.subsys.u.usb.device) {
qemuReportError(VIR_ERR_INTERNAL_ERROR, "%s",
_("USB host device is missing bus/device information"));
return NULL;
}
if (virAsprintf(&ret, "usb-host,hostbus=%.3d,hostaddr=%.3d,id=%s",
dev->source.subsys.u.usb.bus,
dev->source.subsys.u.usb.device,
dev->info.alias) < 0)
virReportOOMError();
return ret;
}
char *
qemuBuildUSBHostdevUsbDevStr(virDomainHostdevDefPtr dev)
{
char *ret = NULL;
if (!dev->source.subsys.u.usb.bus &&
!dev->source.subsys.u.usb.device) {
qemuReportError(VIR_ERR_INTERNAL_ERROR, "%s",
_("USB host device is missing bus/device information"));
return NULL;
}
if (virAsprintf(&ret, "host:%.3d.%.3d",
dev->source.subsys.u.usb.bus,
dev->source.subsys.u.usb.device) < 0)
virReportOOMError();
return ret;
}
/* This function outputs a -chardev command line option which describes only the
* host side of the character device */
char *
qemuBuildChrChardevStr(virDomainChrDefPtr dev)
{
virBuffer buf = VIR_BUFFER_INITIALIZER;
bool telnet;
switch(dev->type) {
case VIR_DOMAIN_CHR_TYPE_NULL:
virBufferVSprintf(&buf, "null,id=%s", dev->info.alias);
break;
case VIR_DOMAIN_CHR_TYPE_VC:
virBufferVSprintf(&buf, "vc,id=%s", dev->info.alias);
break;
case VIR_DOMAIN_CHR_TYPE_PTY:
virBufferVSprintf(&buf, "pty,id=%s", dev->info.alias);
break;
case VIR_DOMAIN_CHR_TYPE_DEV:
virBufferVSprintf(&buf, "tty,id=%s,path=%s", dev->info.alias, dev->data.file.path);
break;
case VIR_DOMAIN_CHR_TYPE_FILE:
virBufferVSprintf(&buf, "file,id=%s,path=%s", dev->info.alias, dev->data.file.path);
break;
case VIR_DOMAIN_CHR_TYPE_PIPE:
virBufferVSprintf(&buf, "pipe,id=%s,path=%s", dev->info.alias, dev->data.file.path);
break;
case VIR_DOMAIN_CHR_TYPE_STDIO:
virBufferVSprintf(&buf, "stdio,id=%s", dev->info.alias);
break;
case VIR_DOMAIN_CHR_TYPE_UDP:
virBufferVSprintf(&buf,
"udp,id=%s,host=%s,port=%s,localaddr=%s,localport=%s",
dev->info.alias,
dev->data.udp.connectHost,
dev->data.udp.connectService,
dev->data.udp.bindHost,
dev->data.udp.bindService);
break;
case VIR_DOMAIN_CHR_TYPE_TCP:
telnet = dev->data.tcp.protocol == VIR_DOMAIN_CHR_TCP_PROTOCOL_TELNET;
virBufferVSprintf(&buf,
"socket,id=%s,host=%s,port=%s%s%s",
dev->info.alias,
dev->data.tcp.host,
dev->data.tcp.service,
telnet ? ",telnet" : "",
dev->data.tcp.listen ? ",server,nowait" : "");
break;
case VIR_DOMAIN_CHR_TYPE_UNIX:
virBufferVSprintf(&buf,
"socket,id=%s,path=%s%s",
dev->info.alias,
dev->data.nix.path,
dev->data.nix.listen ? ",server,nowait" : "");
break;
}
if (virBufferError(&buf)) {
virReportOOMError();
goto error;
}
return virBufferContentAndReset(&buf);
error:
virBufferFreeAndReset(&buf);
return NULL;
}
char *
qemuBuildChrArgStr(virDomainChrDefPtr dev, const char *prefix)
{
virBuffer buf = VIR_BUFFER_INITIALIZER;
if (prefix)
virBufferAdd(&buf, prefix, strlen(prefix));
switch (dev->type) {
case VIR_DOMAIN_CHR_TYPE_NULL:
virBufferAddLit(&buf, "null");
break;
case VIR_DOMAIN_CHR_TYPE_VC:
virBufferAddLit(&buf, "vc");
break;
case VIR_DOMAIN_CHR_TYPE_PTY:
virBufferAddLit(&buf, "pty");
break;
case VIR_DOMAIN_CHR_TYPE_DEV:
virBufferStrcat(&buf, dev->data.file.path, NULL);
break;
case VIR_DOMAIN_CHR_TYPE_FILE:
virBufferVSprintf(&buf, "file:%s", dev->data.file.path);
break;
case VIR_DOMAIN_CHR_TYPE_PIPE:
virBufferVSprintf(&buf, "pipe:%s", dev->data.file.path);
break;
case VIR_DOMAIN_CHR_TYPE_STDIO:
virBufferAddLit(&buf, "stdio");
break;
case VIR_DOMAIN_CHR_TYPE_UDP:
virBufferVSprintf(&buf, "udp:%s:%s@%s:%s",
dev->data.udp.connectHost,
dev->data.udp.connectService,
dev->data.udp.bindHost,
dev->data.udp.bindService);
break;
case VIR_DOMAIN_CHR_TYPE_TCP:
if (dev->data.tcp.protocol == VIR_DOMAIN_CHR_TCP_PROTOCOL_TELNET) {
virBufferVSprintf(&buf, "telnet:%s:%s%s",
dev->data.tcp.host,
dev->data.tcp.service,
dev->data.tcp.listen ? ",server,nowait" : "");
} else {
virBufferVSprintf(&buf, "tcp:%s:%s%s",
dev->data.tcp.host,
dev->data.tcp.service,
dev->data.tcp.listen ? ",server,nowait" : "");
}
break;
case VIR_DOMAIN_CHR_TYPE_UNIX:
virBufferVSprintf(&buf, "unix:%s%s",
dev->data.nix.path,
dev->data.nix.listen ? ",server,nowait" : "");
break;
}
if (virBufferError(&buf)) {
virReportOOMError();
goto error;
}
return virBufferContentAndReset(&buf);
error:
virBufferFreeAndReset(&buf);
return NULL;
}
char *
qemuBuildVirtioSerialPortDevStr(virDomainChrDefPtr dev)
{
virBuffer buf = VIR_BUFFER_INITIALIZER;
virBufferAddLit(&buf, "virtserialport");
if (dev->info.type != VIR_DOMAIN_DEVICE_ADDRESS_TYPE_NONE) {
/* Check it's a virtio-serial address */
if (dev->info.type !=
VIR_DOMAIN_DEVICE_ADDRESS_TYPE_VIRTIO_SERIAL)
{
qemuReportError(VIR_ERR_INTERNAL_ERROR,
"%s", _("virtio serial device has invalid address type"));
goto error;
}
virBufferVSprintf(&buf,
",bus=" QEMU_VIRTIO_SERIAL_PREFIX "%d.%d",
dev->info.addr.vioserial.controller,
dev->info.addr.vioserial.bus);
}
virBufferVSprintf(&buf, ",chardev=%s", dev->info.alias);
if (dev->target.name) {
virBufferVSprintf(&buf, ",name=%s", dev->target.name);
}
if (virBufferError(&buf)) {
virReportOOMError();
goto error;
}
return virBufferContentAndReset(&buf);
error:
virBufferFreeAndReset(&buf);
return NULL;
}
static char *
qemuBuildClockArgStr(virDomainClockDefPtr def)
{
virBuffer buf = VIR_BUFFER_INITIALIZER;
switch (def->offset) {
case VIR_DOMAIN_CLOCK_OFFSET_UTC:
virBufferAddLit(&buf, "base=utc");
break;
case VIR_DOMAIN_CLOCK_OFFSET_LOCALTIME:
case VIR_DOMAIN_CLOCK_OFFSET_TIMEZONE:
virBufferAddLit(&buf, "base=localtime");
break;
case VIR_DOMAIN_CLOCK_OFFSET_VARIABLE: {
time_t now = time(NULL);
struct tm nowbits;
now += def->data.adjustment;
gmtime_r(&now, &nowbits);
virBufferVSprintf(&buf, "base=%d-%d-%dT%d:%d:%d",
nowbits.tm_year + 1900,
nowbits.tm_mon,
nowbits.tm_mday,
nowbits.tm_hour,
nowbits.tm_min,
nowbits.tm_sec);
} break;
default:
qemuReportError(VIR_ERR_CONFIG_UNSUPPORTED,
_("unsupported clock offset '%s'"),
virDomainClockOffsetTypeToString(def->offset));
goto error;
}
/* Look for an 'rtc' timer element, and add in appropriate clock= and driftfix= */
int i;
for (i = 0; i < def->ntimers; i++) {
if (def->timers[i]->name == VIR_DOMAIN_TIMER_NAME_RTC) {
switch (def->timers[i]->track) {
case -1: /* unspecified - use hypervisor default */
break;
case VIR_DOMAIN_TIMER_TRACK_BOOT:
qemuReportError(VIR_ERR_CONFIG_UNSUPPORTED,
_("unsupported rtc timer track '%s'"),
virDomainTimerTrackTypeToString(def->timers[i]->track));
goto error;
case VIR_DOMAIN_TIMER_TRACK_GUEST:
virBufferAddLit(&buf, ",clock=vm");
break;
case VIR_DOMAIN_TIMER_TRACK_WALL:
virBufferAddLit(&buf, ",clock=host");
break;
}
switch (def->timers[i]->tickpolicy) {
case -1:
case VIR_DOMAIN_TIMER_TICKPOLICY_DELAY:
/* This is the default - missed ticks delivered when
next scheduled, at normal rate */
break;
case VIR_DOMAIN_TIMER_TICKPOLICY_CATCHUP:
/* deliver ticks at a faster rate until caught up */
virBufferAddLit(&buf, ",driftfix=slew");
break;
case VIR_DOMAIN_TIMER_TICKPOLICY_MERGE:
case VIR_DOMAIN_TIMER_TICKPOLICY_DISCARD:
qemuReportError(VIR_ERR_CONFIG_UNSUPPORTED,
_("unsupported rtc timer tickpolicy '%s'"),
virDomainTimerTickpolicyTypeToString(def->timers[i]->tickpolicy));
goto error;
}
break; /* no need to check other timers - there is only one rtc */
}
}
if (virBufferError(&buf)) {
virReportOOMError();
goto error;
}
return virBufferContentAndReset(&buf);
error:
virBufferFreeAndReset(&buf);
return NULL;
}
static int
qemuBuildCpuArgStr(const struct qemud_driver *driver,
const virDomainDefPtr def,
const char *emulator,
const struct utsname *ut,
char **opt)
{
const virCPUDefPtr host = driver->caps->host.cpu;
virCPUDefPtr guest = NULL;
unsigned int ncpus = 0;
const char **cpus = NULL;
union cpuData *data = NULL;
int ret = -1;
virBuffer buf = VIR_BUFFER_INITIALIZER;
int i;
if (def->cpu && def->cpu->model) {
if (qemudProbeCPUModels(emulator, ut->machine, &ncpus, &cpus) < 0)
goto cleanup;
if (!ncpus || !host) {
qemuReportError(VIR_ERR_NO_SUPPORT, "%s",
_("CPU specification not supported by hypervisor"));
goto cleanup;
}
}
if (ncpus > 0 && host) {
virCPUCompareResult cmp;
const char *preferred;
cmp = cpuGuestData(host, def->cpu, &data);
switch (cmp) {
case VIR_CPU_COMPARE_INCOMPATIBLE:
qemuReportError(VIR_ERR_INTERNAL_ERROR,
"%s", _("guest CPU is not compatible with host CPU"));
/* fall through */
case VIR_CPU_COMPARE_ERROR:
goto cleanup;
default:
break;
}
if (VIR_ALLOC(guest) < 0 || !(guest->arch = strdup(ut->machine)))
goto no_memory;
if (def->cpu->match == VIR_CPU_MATCH_MINIMUM)
preferred = host->model;
else
preferred = def->cpu->model;
guest->type = VIR_CPU_TYPE_GUEST;
if (cpuDecode(guest, data, cpus, ncpus, preferred) < 0)
goto cleanup;
virBufferVSprintf(&buf, "%s", guest->model);
for (i = 0; i < guest->nfeatures; i++) {
char sign;
if (guest->features[i].policy == VIR_CPU_FEATURE_DISABLE)
sign = '-';
else
sign = '+';
virBufferVSprintf(&buf, ",%c%s", sign, guest->features[i].name);
}
}
else {
/*
* Need to force a 32-bit guest CPU type if
*
* 1. guest OS is i686
* 2. host OS is x86_64
* 3. emulator is qemu-kvm or kvm
*
* Or
*
* 1. guest OS is i686
* 2. emulator is qemu-system-x86_64
*/
if (STREQ(def->os.arch, "i686") &&
((STREQ(ut->machine, "x86_64") &&
strstr(emulator, "kvm")) ||
strstr(emulator, "x86_64")))
virBufferAddLit(&buf, "qemu32");
}
if (virBufferError(&buf))
goto no_memory;
*opt = virBufferContentAndReset(&buf);
ret = 0;
cleanup:
virCPUDefFree(guest);
cpuDataFree(ut->machine, data);
if (cpus) {
for (i = 0; i < ncpus; i++)
VIR_FREE(cpus[i]);
VIR_FREE(cpus);
}
return ret;
no_memory:
virReportOOMError();
goto cleanup;
}
static char *
qemuBuildSmpArgStr(const virDomainDefPtr def,
unsigned long long qemuCmdFlags)
{
virBuffer buf = VIR_BUFFER_INITIALIZER;
virBufferVSprintf(&buf, "%lu", def->vcpus);
if ((qemuCmdFlags & QEMUD_CMD_FLAG_SMP_TOPOLOGY)) {
/* sockets, cores, and threads are either all zero
* or all non-zero, thus checking one of them is enough */
if (def->cpu && def->cpu->sockets) {
virBufferVSprintf(&buf, ",sockets=%u", def->cpu->sockets);
virBufferVSprintf(&buf, ",cores=%u", def->cpu->cores);
virBufferVSprintf(&buf, ",threads=%u", def->cpu->threads);
}
else {
virBufferVSprintf(&buf, ",sockets=%lu", def->vcpus);
virBufferVSprintf(&buf, ",cores=%u", 1);
virBufferVSprintf(&buf, ",threads=%u", 1);
}
}
if (virBufferError(&buf)) {
virBufferFreeAndReset(&buf);
virReportOOMError();
return NULL;
}
return virBufferContentAndReset(&buf);
}
/*
* Constructs a argv suitable for launching qemu with config defined
* for a given virtual machine.
*
* XXX 'conn' is only required to resolve network -> bridge name
* figure out how to remove this requirement some day
*/
int qemudBuildCommandLine(virConnectPtr conn,
struct qemud_driver *driver,
virDomainDefPtr def,
virDomainChrDefPtr monitor_chr,
int monitor_json,
unsigned long long qemuCmdFlags,
const char ***retargv,
const char ***retenv,
int **tapfds,
int *ntapfds,
const char *migrateFrom,
virDomainSnapshotObjPtr current_snapshot)
{
int i;
char memory[50];
char boot[VIR_DOMAIN_BOOT_LAST];
struct utsname ut;
int disableKQEMU = 0;
int disableKVM = 0;
int enableKVM = 0;
int qargc = 0, qarga = 0;
const char **qargv = NULL;
int qenvc = 0, qenva = 0;
const char **qenv = NULL;
const char *emulator;
char uuid[VIR_UUID_STRING_BUFLEN];
char domid[50];
char *cpu;
char *smp;
int last_good_net = -1;
uname_normalize(&ut);
if (qemuAssignDeviceAliases(def, qemuCmdFlags) < 0)
return -1;
virUUIDFormat(def->uuid, uuid);
/* Migration is very annoying due to wildly varying syntax & capabilities
* over time of KVM / QEMU codebases
*/
if (migrateFrom) {
if (STRPREFIX(migrateFrom, "tcp")) {
if (!(qemuCmdFlags & QEMUD_CMD_FLAG_MIGRATE_QEMU_TCP)) {
qemuReportError(VIR_ERR_NO_SUPPORT,
"%s", _("TCP migration is not supported with this QEMU binary"));
return -1;
}
} else if (STREQ(migrateFrom, "stdio")) {
if (qemuCmdFlags & QEMUD_CMD_FLAG_MIGRATE_QEMU_EXEC) {
migrateFrom = "exec:cat";
} else if (!(qemuCmdFlags & QEMUD_CMD_FLAG_MIGRATE_KVM_STDIO)) {
qemuReportError(VIR_ERR_NO_SUPPORT,
"%s", _("STDIO migration is not supported with this QEMU binary"));
return -1;
}
} else if (STRPREFIX(migrateFrom, "exec")) {
if (!(qemuCmdFlags & QEMUD_CMD_FLAG_MIGRATE_QEMU_EXEC)) {
qemuReportError(VIR_ERR_NO_SUPPORT,
"%s", _("STDIO migration is not supported with this QEMU binary"));
return -1;
}
}
}
emulator = def->emulator;
/* Need to explicitly disable KQEMU if
* 1. Guest domain is 'qemu'
* 2. The qemu binary has the -no-kqemu flag
*/
if ((qemuCmdFlags & QEMUD_CMD_FLAG_KQEMU) &&
def->virtType == VIR_DOMAIN_VIRT_QEMU)
disableKQEMU = 1;
/* Need to explicitly disable KVM if
* 1. Guest domain is 'qemu'
* 2. The qemu binary has the -no-kvm flag
*/
if ((qemuCmdFlags & QEMUD_CMD_FLAG_KVM) &&
def->virtType == VIR_DOMAIN_VIRT_QEMU)
disableKVM = 1;
/* Should explicitly enable KVM if
* 1. Guest domain is 'kvm'
* 2. The qemu binary has the -enable-kvm flag
* NOTE: user must be responsible for loading the kvm modules
*/
if ((qemuCmdFlags & QEMUD_CMD_FLAG_ENABLE_KVM) &&
def->virtType == VIR_DOMAIN_VIRT_KVM)
enableKVM = 1;
#define ADD_ARG_SPACE \
do { \
if (qargc == qarga) { \
qarga += 10; \
if (VIR_REALLOC_N(qargv, qarga) < 0) \
goto no_memory; \
} \
} while (0)
#define ADD_ARG(thisarg) \
do { \
ADD_ARG_SPACE; \
qargv[qargc++] = thisarg; \
} while (0)
#define ADD_ARG_LIT(thisarg) \
do { \
ADD_ARG_SPACE; \
if ((qargv[qargc++] = strdup(thisarg)) == NULL) \
goto no_memory; \
} while (0)
#define ADD_USBDISK(thisarg) \
do { \
ADD_ARG_LIT("-usbdevice"); \
ADD_ARG_SPACE; \
if ((virAsprintf((char **)&(qargv[qargc++]), \
"disk:%s", thisarg)) == -1) { \
goto no_memory; \
} \
} while (0)
#define ADD_ENV_SPACE \
do { \
if (qenvc == qenva) { \
qenva += 10; \
if (VIR_REALLOC_N(qenv, qenva) < 0) \
goto no_memory; \
} \
} while (0)
#define ADD_ENV(thisarg) \
do { \
ADD_ENV_SPACE; \
qenv[qenvc++] = thisarg; \
} while (0)
#define ADD_ENV_LIT(thisarg) \
do { \
ADD_ENV_SPACE; \
if ((qenv[qenvc++] = strdup(thisarg)) == NULL) \
goto no_memory; \
} while (0)
#define ADD_ENV_PAIR(envname, val) \
do { \
char *envval; \
ADD_ENV_SPACE; \
if (virAsprintf(&envval, "%s=%s", envname, val) < 0) \
goto no_memory; \
qenv[qenvc++] = envval; \
} while (0)
/* Make sure to unset or set all envvars in qemuxml2argvtest.c that
* are copied here using this macro, otherwise the test may fail */
#define ADD_ENV_COPY(envname) \
do { \
char *val = getenv(envname); \
if (val != NULL) { \
ADD_ENV_PAIR(envname, val); \
} \
} while (0)
/* Set '-m MB' based on maxmem, because the lower 'memory' limit
* is set post-startup using the balloon driver. If balloon driver
* is not supported, then they're out of luck anyway
*/
snprintf(memory, sizeof(memory), "%lu", def->maxmem/1024);
snprintf(domid, sizeof(domid), "%d", def->id);
ADD_ENV_LIT("LC_ALL=C");
ADD_ENV_COPY("LD_PRELOAD");
ADD_ENV_COPY("LD_LIBRARY_PATH");
ADD_ENV_COPY("PATH");
ADD_ENV_COPY("HOME");
ADD_ENV_COPY("USER");
ADD_ENV_COPY("LOGNAME");
ADD_ENV_COPY("TMPDIR");
ADD_ARG_LIT(emulator);
ADD_ARG_LIT("-S");
/* This should *never* be NULL, since we always provide
* a machine in the capabilities data for QEMU. So this
* check is just here as a safety in case the unexpected
* happens */
if (def->os.machine) {
ADD_ARG_LIT("-M");
ADD_ARG_LIT(def->os.machine);
}
if (qemuBuildCpuArgStr(driver, def, emulator, &ut, &cpu) < 0)
goto error;
if (cpu) {
ADD_ARG_LIT("-cpu");
ADD_ARG_LIT(cpu);
VIR_FREE(cpu);
}
if (disableKQEMU)
ADD_ARG_LIT("-no-kqemu");
if (disableKVM)
ADD_ARG_LIT("-no-kvm");
if (enableKVM)
ADD_ARG_LIT("-enable-kvm");
ADD_ARG_LIT("-m");
ADD_ARG_LIT(memory);
if (def->hugepage_backed) {
if (!driver->hugetlbfs_mount) {
qemuReportError(VIR_ERR_INTERNAL_ERROR,
"%s", _("hugetlbfs filesystem is not mounted"));
goto error;
}
if (!driver->hugepage_path) {
qemuReportError(VIR_ERR_INTERNAL_ERROR,
"%s", _("hugepages are disabled by administrator config"));
goto error;
}
if (!(qemuCmdFlags & QEMUD_CMD_FLAG_MEM_PATH)) {
qemuReportError(VIR_ERR_INTERNAL_ERROR,
_("hugepage backing not supported by '%s'"),
def->emulator);
goto error;
}
ADD_ARG_LIT("-mem-prealloc");
ADD_ARG_LIT("-mem-path");
ADD_ARG_LIT(driver->hugepage_path);
}
ADD_ARG_LIT("-smp");
if (!(smp = qemuBuildSmpArgStr(def, qemuCmdFlags)))
goto error;
ADD_ARG(smp);
if (qemuCmdFlags & QEMUD_CMD_FLAG_NAME) {
ADD_ARG_LIT("-name");
ADD_ARG_LIT(def->name);
}
if (qemuCmdFlags & QEMUD_CMD_FLAG_UUID) {
ADD_ARG_LIT("-uuid");
ADD_ARG_LIT(uuid);
}
if (def->virtType == VIR_DOMAIN_VIRT_XEN ||
STREQ(def->os.type, "xen") ||
STREQ(def->os.type, "linux")) {
if (qemuCmdFlags & QEMUD_CMD_FLAG_DOMID) {
ADD_ARG_LIT("-domid");
ADD_ARG_LIT(domid);
} else if (qemuCmdFlags & QEMUD_CMD_FLAG_XEN_DOMID) {
ADD_ARG_LIT("-xen-attach");
ADD_ARG_LIT("-xen-domid");
ADD_ARG_LIT(domid);
} else {
qemuReportError(VIR_ERR_INTERNAL_ERROR,
_("qemu emulator '%s' does not support xen"),
def->emulator);
goto error;
}
}
/*
* NB, -nographic *MUST* come before any serial, or monitor
* or parallel port flags due to QEMU craziness, where it
* decides to change the serial port & monitor to be on stdout
* if you ask for nographic. So we have to make sure we override
* these defaults ourselves...
*/
if (!def->graphics)
ADD_ARG_LIT("-nographic");
if (qemuCmdFlags & QEMUD_CMD_FLAG_DEVICE)
ADD_ARG_LIT("-nodefaults");
if (monitor_chr) {
char *chrdev;
/* Use -chardev if it's available */
if (qemuCmdFlags & QEMUD_CMD_FLAG_CHARDEV) {
ADD_ARG_LIT("-chardev");
if (!(chrdev = qemuBuildChrChardevStr(monitor_chr)))
goto error;
ADD_ARG(chrdev);
ADD_ARG_LIT("-mon");
if (monitor_json)
ADD_ARG_LIT("chardev=monitor,mode=control");
else
ADD_ARG_LIT("chardev=monitor,mode=readline");
} else {
const char *prefix = NULL;
if (monitor_json)
prefix = "control,";
ADD_ARG_LIT("-monitor");
if (!(chrdev = qemuBuildChrArgStr(monitor_chr, prefix)))
goto error;
ADD_ARG(chrdev);
}
}
if (qemuCmdFlags & QEMUD_CMD_FLAG_RTC) {
const char *rtcopt;
ADD_ARG_LIT("-rtc");
if (!(rtcopt = qemuBuildClockArgStr(&def->clock)))
goto error;
ADD_ARG(rtcopt);
} else {
switch (def->clock.offset) {
case VIR_DOMAIN_CLOCK_OFFSET_LOCALTIME:
case VIR_DOMAIN_CLOCK_OFFSET_TIMEZONE:
ADD_ARG_LIT("-localtime");
break;
case VIR_DOMAIN_CLOCK_OFFSET_UTC:
/* Nothing, its the default */
break;
default:
qemuReportError(VIR_ERR_CONFIG_UNSUPPORTED,
_("unsupported clock offset '%s'"),
virDomainClockOffsetTypeToString(def->clock.offset));
goto error;
}
}
if (def->clock.offset == VIR_DOMAIN_CLOCK_OFFSET_TIMEZONE &&
def->clock.data.timezone) {
ADD_ENV_PAIR("TZ", def->clock.data.timezone);
}
for (i = 0; i < def->clock.ntimers; i++) {
switch (def->clock.timers[i]->name) {
default:
case VIR_DOMAIN_TIMER_NAME_PLATFORM:
case VIR_DOMAIN_TIMER_NAME_TSC:
qemuReportError(VIR_ERR_CONFIG_UNSUPPORTED,
_("unsupported timer type (name) '%s'"),
virDomainTimerNameTypeToString(def->clock.timers[i]->name));
goto error;
case VIR_DOMAIN_TIMER_NAME_RTC:
/* This has already been taken care of (in qemuBuildClockArgStr)
if QEMUD_CMD_FLAG_RTC is set (mutually exclusive with
QEMUD_FLAG_RTC_TD_HACK) */
if (qemuCmdFlags & QEMUD_CMD_FLAG_RTC_TD_HACK) {
switch (def->clock.timers[i]->tickpolicy) {
case -1:
case VIR_DOMAIN_TIMER_TICKPOLICY_DELAY:
/* the default - do nothing */
break;
case VIR_DOMAIN_TIMER_TICKPOLICY_CATCHUP:
ADD_ARG_LIT("-rtc-td-hack");
break;
case VIR_DOMAIN_TIMER_TICKPOLICY_MERGE:
case VIR_DOMAIN_TIMER_TICKPOLICY_DISCARD:
qemuReportError(VIR_ERR_CONFIG_UNSUPPORTED,
_("unsupported rtc tickpolicy '%s'"),
virDomainTimerTickpolicyTypeToString(def->clock.timers[i]->tickpolicy));
goto error;
}
} else if (!(qemuCmdFlags & QEMUD_CMD_FLAG_RTC)
&& (def->clock.timers[i]->tickpolicy
!= VIR_DOMAIN_TIMER_TICKPOLICY_DELAY)
&& (def->clock.timers[i]->tickpolicy != -1)) {
/* a non-default rtc policy was given, but there is no
way to implement it in this version of qemu */
qemuReportError(VIR_ERR_CONFIG_UNSUPPORTED,
_("unsupported rtc tickpolicy '%s'"),
virDomainTimerTickpolicyTypeToString(def->clock.timers[i]->tickpolicy));
goto error;
}
break;
case VIR_DOMAIN_TIMER_NAME_PIT:
switch (def->clock.timers[i]->tickpolicy) {
case -1:
case VIR_DOMAIN_TIMER_TICKPOLICY_DELAY:
/* delay is the default if we don't have kernel
(-no-kvm-pit), otherwise, the default is catchup. */
if (qemuCmdFlags & QEMUD_CMD_FLAG_NO_KVM_PIT)
ADD_ARG_LIT("-no-kvm-pit-reinjection");
break;
case VIR_DOMAIN_TIMER_TICKPOLICY_CATCHUP:
if (qemuCmdFlags & QEMUD_CMD_FLAG_NO_KVM_PIT) {
/* do nothing - this is default for kvm-pit */
} else if (qemuCmdFlags & QEMUD_CMD_FLAG_TDF) {
/* -tdf switches to 'catchup' with userspace pit. */
ADD_ARG_LIT("-tdf");
} else {
/* can't catchup if we have neither pit mode */
qemuReportError(VIR_ERR_CONFIG_UNSUPPORTED,
_("unsupported pit tickpolicy '%s'"),
virDomainTimerTickpolicyTypeToString(def->clock.timers[i]->tickpolicy));
goto error;
}
break;
case VIR_DOMAIN_TIMER_TICKPOLICY_MERGE:
case VIR_DOMAIN_TIMER_TICKPOLICY_DISCARD:
/* no way to support these modes for pit in qemu */
qemuReportError(VIR_ERR_CONFIG_UNSUPPORTED,
_("unsupported pit tickpolicy '%s'"),
virDomainTimerTickpolicyTypeToString(def->clock.timers[i]->tickpolicy));
goto error;
}
break;
case VIR_DOMAIN_TIMER_NAME_HPET:
/* the only meaningful attribute for hpet is "present". If
* present is -1, that means it wasn't specified, and
* should be left at the default for the
* hypervisor. "default" when -no-hpet exists is "yes",
* and when -no-hpet doesn't exist is "no". "confusing"?
* "yes"! */
if (qemuCmdFlags & QEMUD_CMD_FLAG_NO_HPET) {
if (def->clock.timers[i]->present == 0)
ADD_ARG_LIT("-no-hpet");
} else {
/* no hpet timer available. The only possible action
is to raise an error if present="yes" */
if (def->clock.timers[i]->present == 1) {
qemuReportError(VIR_ERR_CONFIG_UNSUPPORTED,
"%s", _("pit timer is not supported"));
}
}
break;
}
}
if ((qemuCmdFlags & QEMUD_CMD_FLAG_NO_REBOOT) &&
def->onReboot != VIR_DOMAIN_LIFECYCLE_RESTART)
ADD_ARG_LIT("-no-reboot");
if (!(def->features & (1 << VIR_DOMAIN_FEATURE_ACPI)))
ADD_ARG_LIT("-no-acpi");
if (!def->os.bootloader) {
for (i = 0 ; i < def->os.nBootDevs ; i++) {
switch (def->os.bootDevs[i]) {
case VIR_DOMAIN_BOOT_CDROM:
boot[i] = 'd';
break;
case VIR_DOMAIN_BOOT_FLOPPY:
boot[i] = 'a';
break;
case VIR_DOMAIN_BOOT_DISK:
boot[i] = 'c';
break;
case VIR_DOMAIN_BOOT_NET:
boot[i] = 'n';
break;
default:
boot[i] = 'c';
break;
}
}
if (def->os.nBootDevs) {
boot[def->os.nBootDevs] = '\0';
ADD_ARG_LIT("-boot");
ADD_ARG_LIT(boot);
}
if (def->os.kernel) {
ADD_ARG_LIT("-kernel");
ADD_ARG_LIT(def->os.kernel);
}
if (def->os.initrd) {
ADD_ARG_LIT("-initrd");
ADD_ARG_LIT(def->os.initrd);
}
if (def->os.cmdline) {
ADD_ARG_LIT("-append");
ADD_ARG_LIT(def->os.cmdline);
}
} else {
ADD_ARG_LIT("-bootloader");
ADD_ARG_LIT(def->os.bootloader);
}
for (i = 0 ; i < def->ndisks ; i++) {
virDomainDiskDefPtr disk = def->disks[i];
if (disk->driverName != NULL &&
!STREQ(disk->driverName, "qemu")) {
qemuReportError(VIR_ERR_INTERNAL_ERROR,
_("unsupported driver name '%s' for disk '%s'"),
disk->driverName, disk->src);
goto error;
}
}
if (qemuCmdFlags & QEMUD_CMD_FLAG_DEVICE) {
for (i = 0 ; i < def->ncontrollers ; i++) {
virDomainControllerDefPtr cont = def->controllers[i];
/* We don't add an explicit IDE or FD controller because the
* provided PIIX4 device already includes one. It isn't possible to
* remove the PIIX4. */
if (cont->type == VIR_DOMAIN_CONTROLLER_TYPE_IDE ||
cont->type == VIR_DOMAIN_CONTROLLER_TYPE_FDC)
continue;
/* QEMU doesn't implement a SATA driver */
if (cont->type == VIR_DOMAIN_CONTROLLER_TYPE_SATA) {
qemuReportError(VIR_ERR_NO_SUPPORT,
"%s", _("SATA is not supported with this QEMU binary"));
goto error;
}
ADD_ARG_LIT("-device");
char *devstr;
if (!(devstr = qemuBuildControllerDevStr(def->controllers[i])))
goto no_memory;
ADD_ARG(devstr);
}
}
/* If QEMU supports -drive param instead of old -hda, -hdb, -cdrom .. */
if (qemuCmdFlags & QEMUD_CMD_FLAG_DRIVE) {
int bootCD = 0, bootFloppy = 0, bootDisk = 0;
/* If QEMU supports boot=on for -drive param... */
if (qemuCmdFlags & QEMUD_CMD_FLAG_DRIVE_BOOT) {
for (i = 0 ; i < def->os.nBootDevs ; i++) {
switch (def->os.bootDevs[i]) {
case VIR_DOMAIN_BOOT_CDROM:
bootCD = 1;
break;
case VIR_DOMAIN_BOOT_FLOPPY:
bootFloppy = 1;
break;
case VIR_DOMAIN_BOOT_DISK:
bootDisk = 1;
break;
}
}
}
for (i = 0 ; i < def->ndisks ; i++) {
char *optstr;
int bootable = 0;
virDomainDiskDefPtr disk = def->disks[i];
int withDeviceArg = 0;
/* Unless we have -device, then USB disks need special
handling */
if ((disk->bus == VIR_DOMAIN_DISK_BUS_USB) &&
!(qemuCmdFlags & QEMUD_CMD_FLAG_DEVICE)) {
if (disk->device == VIR_DOMAIN_DISK_DEVICE_DISK) {
ADD_USBDISK(disk->src);
} else {
qemuReportError(VIR_ERR_INTERNAL_ERROR,
_("unsupported usb disk type for '%s'"), disk->src);
goto error;
}
continue;
}
switch (disk->device) {
case VIR_DOMAIN_DISK_DEVICE_CDROM:
bootable = bootCD;
bootCD = 0;
break;
case VIR_DOMAIN_DISK_DEVICE_FLOPPY:
bootable = bootFloppy;
bootFloppy = 0;
break;
case VIR_DOMAIN_DISK_DEVICE_DISK:
bootable = bootDisk;
bootDisk = 0;
break;
}
ADD_ARG_LIT("-drive");
/* Unfortunately it is nt possible to use
-device for floppys, or Xen paravirt
devices. Fortunately, those don't need
static PCI addresses, so we don't really
care that we can't use -device */
if ((qemuCmdFlags & QEMUD_CMD_FLAG_DEVICE) &&
(disk->bus != VIR_DOMAIN_DISK_BUS_XEN))
withDeviceArg = 1;
if (!(optstr = qemuBuildDriveStr(disk, bootable,
(withDeviceArg ? qemuCmdFlags :
(qemuCmdFlags & ~QEMUD_CMD_FLAG_DEVICE)))))
goto error;
ADD_ARG(optstr);
if (withDeviceArg) {
if (disk->bus == VIR_DOMAIN_DISK_BUS_FDC) {
char *fdc;
ADD_ARG_LIT("-global");
if (virAsprintf(&fdc, "isa-fdc.drive%c=drive-%s",
disk->info.addr.drive.unit ? 'B' : 'A',
disk->info.alias) < 0)
goto no_memory;
ADD_ARG(fdc);
} else {
ADD_ARG_LIT("-device");
if (!(optstr = qemuBuildDriveDevStr(disk)))
goto error;
ADD_ARG(optstr);
}
}
}
} else {
for (i = 0 ; i < def->ndisks ; i++) {
char dev[NAME_MAX];
char file[PATH_MAX];
virDomainDiskDefPtr disk = def->disks[i];
if (disk->bus == VIR_DOMAIN_DISK_BUS_USB) {
if (disk->device == VIR_DOMAIN_DISK_DEVICE_DISK) {
ADD_USBDISK(disk->src);
} else {
qemuReportError(VIR_ERR_INTERNAL_ERROR,
_("unsupported usb disk type for '%s'"), disk->src);
goto error;
}
continue;
}
if (STREQ(disk->dst, "hdc") &&
disk->device == VIR_DOMAIN_DISK_DEVICE_CDROM) {
if (disk->src) {
snprintf(dev, NAME_MAX, "-%s", "cdrom");
} else {
continue;
}
} else {
if (STRPREFIX(disk->dst, "hd") ||
STRPREFIX(disk->dst, "fd")) {
snprintf(dev, NAME_MAX, "-%s", disk->dst);
} else {
qemuReportError(VIR_ERR_INTERNAL_ERROR,
_("unsupported disk type '%s'"), disk->dst);
goto error;
}
}
if (disk->type == VIR_DOMAIN_DISK_TYPE_DIR) {
/* QEMU only supports magic FAT format for now */
if (disk->driverType &&
STRNEQ(disk->driverType, "fat")) {
qemuReportError(VIR_ERR_INTERNAL_ERROR,
_("unsupported disk driver type for '%s'"),
disk->driverType);
goto error;
}
if (!disk->readonly) {
qemuReportError(VIR_ERR_INTERNAL_ERROR, "%s",
_("cannot create virtual FAT disks in read-write mode"));
goto error;
}
if (disk->device == VIR_DOMAIN_DISK_DEVICE_FLOPPY)
snprintf(file, PATH_MAX, "fat:floppy:%s", disk->src);
else
snprintf(file, PATH_MAX, "fat:%s", disk->src);
} else {
snprintf(file, PATH_MAX, "%s", disk->src);
}
ADD_ARG_LIT(dev);
ADD_ARG_LIT(file);
}
}
if (!def->nnets) {
/* If we have -device, then we set -nodefault already */
if (!(qemuCmdFlags & QEMUD_CMD_FLAG_DEVICE)) {
ADD_ARG_LIT("-net");
ADD_ARG_LIT("none");
}
} else {
for (i = 0 ; i < def->nnets ; i++) {
virDomainNetDefPtr net = def->nets[i];
char *nic, *host;
char tapfd_name[50];
char vhostfd_name[50] = "";
int vlan;
/* VLANs are not used with -netdev, so don't record them */
if ((qemuCmdFlags & QEMUD_CMD_FLAG_NETDEV) &&
(qemuCmdFlags & QEMUD_CMD_FLAG_DEVICE))
vlan = -1;
else
vlan = i;
if (net->type == VIR_DOMAIN_NET_TYPE_NETWORK ||
net->type == VIR_DOMAIN_NET_TYPE_BRIDGE) {
int tapfd = qemudNetworkIfaceConnect(conn, driver, net, qemuCmdFlags);
if (tapfd < 0)
goto error;
if (VIR_REALLOC_N(*tapfds, (*ntapfds)+1) < 0) {
virNWFilterTearNWFilter(net);
close(tapfd);
goto no_memory;
}
last_good_net = i;
(*tapfds)[(*ntapfds)++] = tapfd;
if (snprintf(tapfd_name, sizeof(tapfd_name), "%d", tapfd) >= sizeof(tapfd_name))
goto no_memory;
} else if (net->type == VIR_DOMAIN_NET_TYPE_DIRECT) {
int tapfd = qemudPhysIfaceConnect(conn, driver, net,
net->data.direct.linkdev,
net->data.direct.mode,
qemuCmdFlags);
if (tapfd < 0)
goto error;
if (VIR_REALLOC_N(*tapfds, (*ntapfds)+1) < 0) {
virNWFilterTearNWFilter(net);
close(tapfd);
goto no_memory;
}
last_good_net = i;
(*tapfds)[(*ntapfds)++] = tapfd;
if (snprintf(tapfd_name, sizeof(tapfd_name), "%d", tapfd) >= sizeof(tapfd_name))
goto no_memory;
}
if (net->type == VIR_DOMAIN_NET_TYPE_NETWORK ||
net->type == VIR_DOMAIN_NET_TYPE_BRIDGE ||
net->type == VIR_DOMAIN_NET_TYPE_DIRECT) {
/* Attempt to use vhost-net mode for these types of
network device */
int vhostfd = qemudOpenVhostNet(net, qemuCmdFlags);
if (vhostfd >= 0) {
if (VIR_REALLOC_N(*tapfds, (*ntapfds)+1) < 0) {
close(vhostfd);
goto no_memory;
}
(*tapfds)[(*ntapfds)++] = vhostfd;
if (snprintf(vhostfd_name, sizeof(vhostfd_name), "%d", vhostfd)
>= sizeof(vhostfd_name))
goto no_memory;
}
}
/* Possible combinations:
*
* 1. Old way: -net nic,model=e1000,vlan=1 -net tap,vlan=1
* 2. Semi-new: -device e1000,vlan=1 -net tap,vlan=1
* 3. Best way: -netdev type=tap,id=netdev1 -device e1000,id=netdev1
*
* NB, no support for -netdev without use of -device
*/
if ((qemuCmdFlags & QEMUD_CMD_FLAG_NETDEV) &&
(qemuCmdFlags & QEMUD_CMD_FLAG_DEVICE)) {
ADD_ARG_LIT("-netdev");
if (!(host = qemuBuildHostNetStr(net, ',', vlan,
tapfd_name, vhostfd_name)))
goto error;
ADD_ARG(host);
}
if (qemuCmdFlags & QEMUD_CMD_FLAG_DEVICE) {
ADD_ARG_LIT("-device");
if (!(nic = qemuBuildNicDevStr(net, vlan)))
goto error;
ADD_ARG(nic);
} else {
ADD_ARG_LIT("-net");
if (!(nic = qemuBuildNicStr(net, "nic,", vlan)))
goto error;
ADD_ARG(nic);
}
if (!((qemuCmdFlags & QEMUD_CMD_FLAG_NETDEV) &&
(qemuCmdFlags & QEMUD_CMD_FLAG_DEVICE))) {
ADD_ARG_LIT("-net");
if (!(host = qemuBuildHostNetStr(net, ',', vlan,
tapfd_name, vhostfd_name)))
goto error;
ADD_ARG(host);
}
}
}
if (!def->nserials) {
/* If we have -device, then we set -nodefault already */
if (!(qemuCmdFlags & QEMUD_CMD_FLAG_DEVICE)) {
ADD_ARG_LIT("-serial");
ADD_ARG_LIT("none");
}
} else {
for (i = 0 ; i < def->nserials ; i++) {
virDomainChrDefPtr serial = def->serials[i];
char *devstr;
/* Use -chardev with -device if they are available */
if ((qemuCmdFlags & QEMUD_CMD_FLAG_CHARDEV) &&
(qemuCmdFlags & QEMUD_CMD_FLAG_DEVICE)) {
ADD_ARG_LIT("-chardev");
if (!(devstr = qemuBuildChrChardevStr(serial)))
goto error;
ADD_ARG(devstr);
ADD_ARG_LIT("-device");
if (virAsprintf(&devstr, "isa-serial,chardev=%s", serial->info.alias) < 0)
goto no_memory;
ADD_ARG(devstr);
} else {
ADD_ARG_LIT("-serial");
if (!(devstr = qemuBuildChrArgStr(serial, NULL)))
goto error;
ADD_ARG(devstr);
}
}
}
if (!def->nparallels) {
/* If we have -device, then we set -nodefault already */
if (!(qemuCmdFlags & QEMUD_CMD_FLAG_DEVICE)) {
ADD_ARG_LIT("-parallel");
ADD_ARG_LIT("none");
}
} else {
for (i = 0 ; i < def->nparallels ; i++) {
virDomainChrDefPtr parallel = def->parallels[i];
char *devstr;
/* Use -chardev with -device if they are available */
if ((qemuCmdFlags & QEMUD_CMD_FLAG_CHARDEV) &&
(qemuCmdFlags & QEMUD_CMD_FLAG_DEVICE)) {
ADD_ARG_LIT("-chardev");
if (!(devstr = qemuBuildChrChardevStr(parallel)))
goto error;
ADD_ARG(devstr);
ADD_ARG_LIT("-device");
if (virAsprintf(&devstr, "isa-parallel,chardev=%s", parallel->info.alias) < 0)
goto no_memory;
ADD_ARG(devstr);
} else {
ADD_ARG_LIT("-parallel");
if (!(devstr = qemuBuildChrArgStr(parallel, NULL)))
goto error;
ADD_ARG(devstr);
}
}
}
for (i = 0 ; i < def->nchannels ; i++) {
virDomainChrDefPtr channel = def->channels[i];
char *devstr;
switch(channel->targetType) {
case VIR_DOMAIN_CHR_TARGET_TYPE_GUESTFWD:
if (!(qemuCmdFlags & QEMUD_CMD_FLAG_CHARDEV) ||
!(qemuCmdFlags & QEMUD_CMD_FLAG_DEVICE)) {
qemuReportError(VIR_ERR_NO_SUPPORT,
"%s", _("guestfwd requires QEMU to support -chardev & -device"));
goto error;
}
ADD_ARG_LIT("-chardev");
if (!(devstr = qemuBuildChrChardevStr(channel)))
goto error;
ADD_ARG(devstr);
char *addr = virSocketFormatAddr(channel->target.addr);
int port = virSocketGetPort(channel->target.addr);
ADD_ARG_LIT("-netdev");
if (virAsprintf(&devstr, "user,guestfwd=tcp:%s:%i,chardev=%s,id=user-%s",
addr, port, channel->info.alias, channel->info.alias) < 0) {
VIR_FREE(addr);
goto no_memory;
}
VIR_FREE(addr);
ADD_ARG(devstr);
break;
case VIR_DOMAIN_CHR_TARGET_TYPE_VIRTIO:
if (!(qemuCmdFlags & QEMUD_CMD_FLAG_DEVICE)) {
qemuReportError(VIR_ERR_NO_SUPPORT, "%s",
_("virtio channel requires QEMU to support -device"));
goto error;
}
ADD_ARG_LIT("-chardev");
if (!(devstr = qemuBuildChrChardevStr(channel)))
goto error;
ADD_ARG(devstr);
ADD_ARG_LIT("-device");
if (!(devstr = qemuBuildVirtioSerialPortDevStr(channel)))
goto error;
ADD_ARG(devstr);
break;
}
}
ADD_ARG_LIT("-usb");
for (i = 0 ; i < def->ninputs ; i++) {
virDomainInputDefPtr input = def->inputs[i];
if (input->bus == VIR_DOMAIN_INPUT_BUS_USB) {
if (qemuCmdFlags & QEMUD_CMD_FLAG_DEVICE) {
char *optstr;
ADD_ARG_LIT("-device");
if (!(optstr = qemuBuildUSBInputDevStr(input)))
goto error;
ADD_ARG(optstr);
} else {
ADD_ARG_LIT("-usbdevice");
ADD_ARG_LIT(input->type == VIR_DOMAIN_INPUT_TYPE_MOUSE ? "mouse" : "tablet");
}
}
}
if ((def->ngraphics == 1) &&
def->graphics[0]->type == VIR_DOMAIN_GRAPHICS_TYPE_VNC) {
virBuffer opt = VIR_BUFFER_INITIALIZER;
char *optstr;
if (qemuCmdFlags & QEMUD_CMD_FLAG_VNC_COLON) {
if (def->graphics[0]->data.vnc.listenAddr)
virBufferAdd(&opt, def->graphics[0]->data.vnc.listenAddr, -1);
else if (driver->vncListen)
virBufferAdd(&opt, driver->vncListen, -1);
virBufferVSprintf(&opt, ":%d",
def->graphics[0]->data.vnc.port - 5900);
if (def->graphics[0]->data.vnc.passwd ||
driver->vncPassword)
virBufferAddLit(&opt, ",password");
if (driver->vncTLS) {
virBufferAddLit(&opt, ",tls");
if (driver->vncTLSx509verify) {
virBufferVSprintf(&opt, ",x509verify=%s",
driver->vncTLSx509certdir);
} else {
virBufferVSprintf(&opt, ",x509=%s",
driver->vncTLSx509certdir);
}
}
if (driver->vncSASL) {
virBufferAddLit(&opt, ",sasl");
if (driver->vncSASLdir)
ADD_ENV_PAIR("SASL_CONF_DIR", driver->vncSASLdir);
/* TODO: Support ACLs later */
}
} else {
virBufferVSprintf(&opt, "%d",
def->graphics[0]->data.vnc.port - 5900);
}
if (virBufferError(&opt)) {
virBufferFreeAndReset(&opt);
goto no_memory;
}
optstr = virBufferContentAndReset(&opt);
ADD_ARG_LIT("-vnc");
ADD_ARG(optstr);
if (def->graphics[0]->data.vnc.keymap) {
ADD_ARG_LIT("-k");
ADD_ARG_LIT(def->graphics[0]->data.vnc.keymap);
}
/* QEMU implements a VNC extension for providing audio, so we
* set the audio backend to none, to prevent it opening the
* host OS audio devices since that causes security issues
* and is non-sensical when using VNC.
*/
ADD_ENV_LIT("QEMU_AUDIO_DRV=none");
} else if ((def->ngraphics == 1) &&
def->graphics[0]->type == VIR_DOMAIN_GRAPHICS_TYPE_SDL) {
char *xauth = NULL;
char *display = NULL;
if (def->graphics[0]->data.sdl.xauth &&
virAsprintf(&xauth, "XAUTHORITY=%s",
def->graphics[0]->data.sdl.xauth) < 0)
goto no_memory;
if (def->graphics[0]->data.sdl.display &&
virAsprintf(&display, "DISPLAY=%s",
def->graphics[0]->data.sdl.display) < 0) {
VIR_FREE(xauth);
goto no_memory;
}
if (xauth)
ADD_ENV(xauth);
if (display)
ADD_ENV(display);
if (def->graphics[0]->data.sdl.fullscreen)
ADD_ARG_LIT("-full-screen");
/* If using SDL for video, then we should just let it
* use QEMU's host audio drivers, possibly SDL too
* User can set these two before starting libvirtd
*/
ADD_ENV_COPY("QEMU_AUDIO_DRV");
ADD_ENV_COPY("SDL_AUDIODRIVER");
/* New QEMU has this flag to let us explicitly ask for
* SDL graphics. This is better than relying on the
* default, since the default changes :-( */
if (qemuCmdFlags & QEMUD_CMD_FLAG_SDL)
ADD_ARG_LIT("-sdl");
}
if (def->nvideos) {
if (def->nvideos > 1) {
qemuReportError(VIR_ERR_INTERNAL_ERROR,
"%s", _("only one video card is currently supported"));
goto error;
}
if (qemuCmdFlags & QEMUD_CMD_FLAG_VGA) {
if (def->videos[0]->type == VIR_DOMAIN_VIDEO_TYPE_XEN) {
/* nothing - vga has no effect on Xen pvfb */
} else {
const char *vgastr = qemuVideoTypeToString(def->videos[0]->type);
if (!vgastr || STREQ(vgastr, "")) {
qemuReportError(VIR_ERR_CONFIG_UNSUPPORTED,
_("video type %s is not supported with QEMU"),
virDomainVideoTypeToString(def->videos[0]->type));
goto error;
}
ADD_ARG_LIT("-vga");
ADD_ARG_LIT(vgastr);
}
} else {
switch (def->videos[0]->type) {
case VIR_DOMAIN_VIDEO_TYPE_VGA:
ADD_ARG_LIT("-std-vga");
break;
case VIR_DOMAIN_VIDEO_TYPE_VMVGA:
ADD_ARG_LIT("-vmwarevga");
break;
case VIR_DOMAIN_VIDEO_TYPE_XEN:
case VIR_DOMAIN_VIDEO_TYPE_CIRRUS:
/* No special args - this is the default */
break;
default:
qemuReportError(VIR_ERR_CONFIG_UNSUPPORTED,
_("video type %s is not supported with this QEMU"),
virDomainVideoTypeToString(def->videos[0]->type));
goto error;
}
}
} else {
/* If we have -device, then we set -nodefault already */
if (!(qemuCmdFlags & QEMUD_CMD_FLAG_DEVICE) &&
(qemuCmdFlags & QEMUD_CMD_FLAG_VGA)) {
ADD_ARG_LIT("-vga");
ADD_ARG_LIT("none");
}
}
/* Add sound hardware */
if (def->nsounds) {
if (qemuCmdFlags & QEMUD_CMD_FLAG_DEVICE) {
for (i = 0 ; i < def->nsounds ; i++) {
virDomainSoundDefPtr sound = def->sounds[i];
char *str = NULL;
/* Sadly pcspk device doesn't use -device syntax. Fortunately
* we don't need to set any PCI address on it, so we don't
* mind too much */
if (sound->model == VIR_DOMAIN_SOUND_MODEL_PCSPK) {
ADD_ARG_LIT("-soundhw");
ADD_ARG_LIT("pcspk");
} else {
ADD_ARG_LIT("-device");
if (!(str = qemuBuildSoundDevStr(sound)))
goto error;
ADD_ARG(str);
}
}
} else {
int size = 100;
char *modstr;
if (VIR_ALLOC_N(modstr, size+1) < 0)
goto no_memory;
for (i = 0 ; i < def->nsounds && size > 0 ; i++) {
virDomainSoundDefPtr sound = def->sounds[i];
const char *model = virDomainSoundModelTypeToString(sound->model);
if (!model) {
VIR_FREE(modstr);
qemuReportError(VIR_ERR_INTERNAL_ERROR,
"%s", _("invalid sound model"));
goto error;
}
strncat(modstr, model, size);
size -= strlen(model);
if (i < (def->nsounds - 1))
strncat(modstr, ",", size--);
}
ADD_ARG_LIT("-soundhw");
ADD_ARG(modstr);
}
}
/* Add watchdog hardware */
if (def->watchdog) {
virDomainWatchdogDefPtr watchdog = def->watchdog;
char *optstr;
if (qemuCmdFlags & QEMUD_CMD_FLAG_DEVICE) {
ADD_ARG_LIT("-device");
optstr = qemuBuildWatchdogDevStr(watchdog);
if (!optstr)
goto error;
} else {
ADD_ARG_LIT("-watchdog");
const char *model = virDomainWatchdogModelTypeToString(watchdog->model);
if (!model) {
qemuReportError(VIR_ERR_INTERNAL_ERROR,
"%s", _("missing watchdog model"));
goto error;
}
if (!(optstr = strdup(model)))
goto no_memory;
}
ADD_ARG(optstr);
const char *action = virDomainWatchdogActionTypeToString(watchdog->action);
if (!action) {
qemuReportError(VIR_ERR_INTERNAL_ERROR,
"%s", _("invalid watchdog action"));
goto error;
}
ADD_ARG_LIT("-watchdog-action");
ADD_ARG_LIT(action);
}
/* Add host passthrough hardware */
for (i = 0 ; i < def->nhostdevs ; i++) {
virDomainHostdevDefPtr hostdev = def->hostdevs[i];
char *devstr;
/* USB */
if (hostdev->mode == VIR_DOMAIN_HOSTDEV_MODE_SUBSYS &&
hostdev->source.subsys.type == VIR_DOMAIN_HOSTDEV_SUBSYS_TYPE_USB) {
if (qemuCmdFlags & QEMUD_CMD_FLAG_DEVICE) {
ADD_ARG_LIT("-device");
if (!(devstr = qemuBuildUSBHostdevDevStr(hostdev)))
goto error;
ADD_ARG(devstr);
} else {
ADD_ARG_LIT("-usbdevice");
if (!(devstr = qemuBuildUSBHostdevUsbDevStr(hostdev)))
goto error;
ADD_ARG(devstr);
}
}
/* PCI */
if (hostdev->mode == VIR_DOMAIN_HOSTDEV_MODE_SUBSYS &&
hostdev->source.subsys.type == VIR_DOMAIN_HOSTDEV_SUBSYS_TYPE_PCI) {
if (qemuCmdFlags & QEMUD_CMD_FLAG_DEVICE) {
ADD_ARG_LIT("-device");
if (!(devstr = qemuBuildPCIHostdevDevStr(hostdev)))
goto error;
ADD_ARG(devstr);
} else if (qemuCmdFlags & QEMUD_CMD_FLAG_PCIDEVICE) {
ADD_ARG_LIT("-pcidevice");
if (!(devstr = qemuBuildPCIHostdevPCIDevStr(hostdev)))
goto error;
ADD_ARG(devstr);
} else {
qemuReportError(VIR_ERR_NO_SUPPORT, "%s",
_("PCI device assignment is not supported by this version of qemu"));
goto error;
}
}
}
if (migrateFrom) {
ADD_ARG_LIT("-incoming");
ADD_ARG_LIT(migrateFrom);
}
/* QEMU changed its default behavior to not include the virtio balloon
* device. Explicitly request it to ensure it will be present.
*
* NB: Earlier we declared that VirtIO balloon will always be in
* slot 0x3 on bus 0x0
*/
if (qemuCmdFlags & QEMUD_CMD_FLAG_DEVICE) {
ADD_ARG_LIT("-device");
ADD_ARG_LIT("virtio-balloon-pci,id=balloon0,bus=pci.0,addr=0x3");
} else if (qemuCmdFlags & QEMUD_CMD_FLAG_BALLOON) {
ADD_ARG_LIT("-balloon");
ADD_ARG_LIT("virtio");
}
if (current_snapshot && current_snapshot->def->active) {
ADD_ARG_LIT("-loadvm");
ADD_ARG_LIT(current_snapshot->def->name);
}
ADD_ARG(NULL);
ADD_ENV(NULL);
*retargv = qargv;
*retenv = qenv;
return 0;
no_memory:
virReportOOMError();
error:
for (i = 0; i <= last_good_net; i++)
virNWFilterTearNWFilter(def->nets[i]);
if (tapfds &&
*tapfds) {
for (i = 0; i < *ntapfds; i++)
close((*tapfds)[i]);
VIR_FREE(*tapfds);
*ntapfds = 0;
}
if (qargv) {
for (i = 0 ; i < qargc ; i++)
VIR_FREE((qargv)[i]);
VIR_FREE(qargv);
}
if (qenv) {
for (i = 0 ; i < qenvc ; i++)
VIR_FREE((qenv)[i]);
VIR_FREE(qenv);
}
return -1;
#undef ADD_ARG
#undef ADD_ARG_LIT
#undef ADD_ARG_SPACE
#undef ADD_USBDISK
#undef ADD_ENV
#undef ADD_ENV_COPY
#undef ADD_ENV_LIT
#undef ADD_ENV_SPACE
}
/*
* This method takes a string representing a QEMU command line ARGV set
* optionally prefixed by a list of environment variables. It then tries
* to split it up into a NULL terminated list of env & argv, splitting
* on space
*/
static int qemuStringToArgvEnv(const char *args,
const char ***retenv,
const char ***retargv)
{
char **arglist = NULL;
int argcount = 0;
int argalloc = 0;
int envend;
int i;
const char *curr = args;
const char **progenv = NULL;
const char **progargv = NULL;
/* Iterate over string, splitting on sequences of ' ' */
while (curr && *curr != '\0') {
char *arg;
const char *next;
if (*curr == '\'') {
curr++;
next = strchr(curr, '\'');
} else if (*curr == '"') {
curr++;
next = strchr(curr, '"');
} else {
next = strchr(curr, ' ');
}
if (!next)
next = strchr(curr, '\n');
if (next) {
arg = strndup(curr, next-curr);
if (*next == '\'' ||
*next == '"')
next++;
} else {
arg = strdup(curr);
}
if (!arg)
goto no_memory;
if (argalloc == argcount) {
if (VIR_REALLOC_N(arglist, argalloc+10) < 0) {
VIR_FREE(arg);
goto no_memory;
}
argalloc+=10;
}
arglist[argcount++] = arg;
while (next && c_isspace(*next))
next++;
curr = next;
}
/* Iterate over list of args, finding first arg not containing
* the '=' character (eg, skip over env vars FOO=bar) */
for (envend = 0 ; ((envend < argcount) &&
(strchr(arglist[envend], '=') != NULL));
envend++)
; /* nada */
/* Copy the list of env vars */
if (envend > 0) {
if (VIR_REALLOC_N(progenv, envend+1) < 0)
goto no_memory;
for (i = 0 ; i < envend ; i++) {
progenv[i] = arglist[i];
arglist[i] = NULL;
}
progenv[i] = NULL;
}
/* Copy the list of argv */
if (VIR_REALLOC_N(progargv, argcount-envend + 1) < 0)
goto no_memory;
for (i = envend ; i < argcount ; i++)
progargv[i-envend] = arglist[i];
progargv[i-envend] = NULL;
VIR_FREE(arglist);
*retenv = progenv;
*retargv = progargv;
return 0;
no_memory:
for (i = 0 ; progenv && progenv[i] ; i++)
VIR_FREE(progenv[i]);
VIR_FREE(progenv);
for (i = 0 ; i < argcount ; i++)
VIR_FREE(arglist[i]);
VIR_FREE(arglist);
virReportOOMError();
return -1;
}
/*
* Search for a named env variable, and return the value part
*/
static const char *qemuFindEnv(const char **progenv,
const char *name)
{
int i;
int len = strlen(name);
for (i = 0 ; progenv && progenv[i] ; i++) {
if (STREQLEN(progenv[i], name, len) &&
progenv[i][len] == '=')
return progenv[i] + len + 1;
}
return NULL;
}
/*
* Takes a string containing a set of key=value,key=value,key...
* parameters and splits them up, returning two arrays with
* the individual keys and values. If allowEmptyValue is nonzero,
* the "=value" part is optional and if a key with no value is found,
* NULL is be placed into corresponding place in retvalues.
*/
int
qemuParseKeywords(const char *str,
char ***retkeywords,
char ***retvalues,
int allowEmptyValue)
{
int keywordCount = 0;
int keywordAlloc = 0;
char **keywords = NULL;
char **values = NULL;
const char *start = str;
const char *end;
int i;
*retkeywords = NULL;
*retvalues = NULL;
end = start + strlen(str);
while (start) {
const char *separator;
const char *endmark;
char *keyword;
char *value = NULL;
if (!(endmark = strchr(start, ',')))
endmark = end;
if (!(separator = strchr(start, '=')))
separator = end;
if (separator >= endmark) {
if (!allowEmptyValue) {
qemuReportError(VIR_ERR_INTERNAL_ERROR,
_("malformed keyword arguments in '%s'"), str);
goto error;
}
separator = endmark;
}
if (!(keyword = strndup(start, separator - start)))
goto no_memory;
if (separator < endmark) {
separator++;
if (!(value = strndup(separator, endmark - separator))) {
VIR_FREE(keyword);
goto no_memory;
}
}
if (keywordAlloc == keywordCount) {
if (VIR_REALLOC_N(keywords, keywordAlloc + 10) < 0 ||
VIR_REALLOC_N(values, keywordAlloc + 10) < 0) {
VIR_FREE(keyword);
VIR_FREE(value);
goto no_memory;
}
keywordAlloc += 10;
}
keywords[keywordCount] = keyword;
values[keywordCount] = value;
keywordCount++;
start = endmark < end ? endmark + 1 : NULL;
}
*retkeywords = keywords;
*retvalues = values;
return keywordCount;
no_memory:
virReportOOMError();
error:
for (i = 0 ; i < keywordCount ; i++) {
VIR_FREE(keywords[i]);
VIR_FREE(values[i]);
}
VIR_FREE(keywords);
VIR_FREE(values);
return -1;
}
/*
* Tries to parse new style QEMU -drive args.
*
* eg -drive file=/dev/HostVG/VirtData1,if=ide,index=1
*
* Will fail if not using the 'index' keyword
*/
static virDomainDiskDefPtr
qemuParseCommandLineDisk(const char *val,
int nvirtiodisk)
{
virDomainDiskDefPtr def = NULL;
char **keywords;
char **values;
int nkeywords;
int i;
int idx = -1;
int busid = -1;
int unitid = -1;
if ((nkeywords = qemuParseKeywords(val,
&keywords,
&values, 0)) < 0)
return NULL;
if (VIR_ALLOC(def) < 0) {
virReportOOMError();
goto cleanup;
}
def->bus = VIR_DOMAIN_DISK_BUS_IDE;
def->device = VIR_DOMAIN_DISK_DEVICE_DISK;
def->type = VIR_DOMAIN_DISK_TYPE_FILE;
for (i = 0 ; i < nkeywords ; i++) {
if (STREQ(keywords[i], "file")) {
if (values[i] && STRNEQ(values[i], "")) {
def->src = values[i];
values[i] = NULL;
if (STRPREFIX(def->src, "/dev/"))
def->type = VIR_DOMAIN_DISK_TYPE_BLOCK;
else
def->type = VIR_DOMAIN_DISK_TYPE_FILE;
} else {
def->type = VIR_DOMAIN_DISK_TYPE_FILE;
}
} else if (STREQ(keywords[i], "if")) {
if (STREQ(values[i], "ide"))
def->bus = VIR_DOMAIN_DISK_BUS_IDE;
else if (STREQ(values[i], "scsi"))
def->bus = VIR_DOMAIN_DISK_BUS_SCSI;
else if (STREQ(values[i], "virtio"))
def->bus = VIR_DOMAIN_DISK_BUS_VIRTIO;
else if (STREQ(values[i], "xen"))
def->bus = VIR_DOMAIN_DISK_BUS_XEN;
} else if (STREQ(keywords[i], "media")) {
if (STREQ(values[i], "cdrom")) {
def->device = VIR_DOMAIN_DISK_DEVICE_CDROM;
def->readonly = 1;
} else if (STREQ(values[i], "floppy"))
def->device = VIR_DOMAIN_DISK_DEVICE_FLOPPY;
} else if (STREQ(keywords[i], "format")) {
def->driverName = strdup("qemu");
if (!def->driverName) {
virDomainDiskDefFree(def);
def = NULL;
virReportOOMError();
goto cleanup;
}
def->driverType = values[i];
values[i] = NULL;
} else if (STREQ(keywords[i], "cache")) {
if (STREQ(values[i], "off") ||
STREQ(values[i], "none"))
def->cachemode = VIR_DOMAIN_DISK_CACHE_DISABLE;
else if (STREQ(values[i], "writeback") ||
STREQ(values[i], "on"))
def->cachemode = VIR_DOMAIN_DISK_CACHE_WRITEBACK;
else if (STREQ(values[i], "writethrough"))
def->cachemode = VIR_DOMAIN_DISK_CACHE_WRITETHRU;
} else if (STREQ(keywords[i], "werror") ||
STREQ(keywords[i], "rerror")) {
if (STREQ(values[i], "stop"))
def->error_policy = VIR_DOMAIN_DISK_ERROR_POLICY_STOP;
else if (STREQ(values[i], "ignore"))
def->error_policy = VIR_DOMAIN_DISK_ERROR_POLICY_IGNORE;
else if (STREQ(values[i], "enospace"))
def->error_policy = VIR_DOMAIN_DISK_ERROR_POLICY_ENOSPACE;
} else if (STREQ(keywords[i], "index")) {
if (virStrToLong_i(values[i], NULL, 10, &idx) < 0) {
virDomainDiskDefFree(def);
def = NULL;
qemuReportError(VIR_ERR_INTERNAL_ERROR,
_("cannot parse drive index '%s'"), val);
goto cleanup;
}
} else if (STREQ(keywords[i], "bus")) {
if (virStrToLong_i(values[i], NULL, 10, &busid) < 0) {
virDomainDiskDefFree(def);
def = NULL;
qemuReportError(VIR_ERR_INTERNAL_ERROR,
_("cannot parse drive bus '%s'"), val);
goto cleanup;
}
} else if (STREQ(keywords[i], "unit")) {
if (virStrToLong_i(values[i], NULL, 10, &unitid) < 0) {
virDomainDiskDefFree(def);
def = NULL;
qemuReportError(VIR_ERR_INTERNAL_ERROR,
_("cannot parse drive unit '%s'"), val);
goto cleanup;
}
} else if (STREQ(keywords[i], "readonly")) {
if ((values[i] == NULL) || STREQ(values[i], "on"))
def->readonly = 1;
}
}
if (!def->src &&
def->device == VIR_DOMAIN_DISK_DEVICE_DISK) {
qemuReportError(VIR_ERR_INTERNAL_ERROR,
_("missing file parameter in drive '%s'"), val);
virDomainDiskDefFree(def);
def = NULL;
goto cleanup;
}
if (idx == -1 &&
def->bus == VIR_DOMAIN_DISK_BUS_VIRTIO)
idx = nvirtiodisk;
if (idx == -1 &&
unitid == -1 &&
busid == -1) {
qemuReportError(VIR_ERR_INTERNAL_ERROR,
_("missing index/unit/bus parameter in drive '%s'"), val);
virDomainDiskDefFree(def);
def = NULL;
goto cleanup;
}
if (idx == -1) {
if (unitid == -1)
unitid = 0;
if (busid == -1)
busid = 0;
switch (def->bus) {
case VIR_DOMAIN_DISK_BUS_IDE:
idx = (busid * 2) + unitid;
break;
case VIR_DOMAIN_DISK_BUS_SCSI:
idx = (busid * 7) + unitid;
break;
default:
idx = unitid;
break;
}
}
if (def->bus == VIR_DOMAIN_DISK_BUS_IDE) {
def->dst = strdup("hda");
} else if (def->bus == VIR_DOMAIN_DISK_BUS_SCSI) {
def->dst = strdup("sda");
} else if (def->bus == VIR_DOMAIN_DISK_BUS_VIRTIO) {
def->dst = strdup("vda");
} else if (def->bus == VIR_DOMAIN_DISK_BUS_XEN) {
def->dst = strdup("xvda");
} else {
def->dst = strdup("hda");
}
if (!def->dst) {
virDomainDiskDefFree(def);
def = NULL;
virReportOOMError();
goto cleanup;
}
if (STREQ(def->dst, "xvda"))
def->dst[3] = 'a' + idx;
else
def->dst[2] = 'a' + idx;
if (virDomainDiskDefAssignAddress(def) < 0) {
qemuReportError(VIR_ERR_INTERNAL_ERROR,
_("invalid device name '%s'"), def->dst);
virDomainDiskDefFree(def);
def = NULL;
/* fall through to "cleanup" */
}
cleanup:
for (i = 0 ; i < nkeywords ; i++) {
VIR_FREE(keywords[i]);
VIR_FREE(values[i]);
}
VIR_FREE(keywords);
VIR_FREE(values);
return def;
}
/*
* Tries to find a NIC definition matching a vlan we want
*/
static const char *
qemuFindNICForVLAN(int nnics,
const char **nics,
int wantvlan)
{
int i;
for (i = 0 ; i < nnics ; i++) {
int gotvlan;
const char *tmp = strstr(nics[i], "vlan=");
char *end;
if (!tmp)
continue;
tmp += strlen("vlan=");
if (virStrToLong_i(tmp, &end, 10, &gotvlan) < 0) {
qemuReportError(VIR_ERR_INTERNAL_ERROR,
_("cannot parse NIC vlan in '%s'"), nics[i]);
return NULL;
}
if (gotvlan == wantvlan)
return nics[i];
}
if (wantvlan == 0 && nnics > 0)
return nics[0];
qemuReportError(VIR_ERR_INTERNAL_ERROR,
_("cannot find NIC definition for vlan %d"), wantvlan);
return NULL;
}
/*
* Tries to parse a QEMU -net backend argument. Gets given
* a list of all known -net frontend arguments to try and
* match up against. Horribly complicated stuff
*/
static virDomainNetDefPtr
qemuParseCommandLineNet(virCapsPtr caps,
const char *val,
int nnics,
const char **nics)
{
virDomainNetDefPtr def = NULL;
char **keywords = NULL;
char **values = NULL;
int nkeywords;
const char *nic;
int wantvlan = 0;
const char *tmp;
int genmac = 1;
int i;
tmp = strchr(val, ',');
if (tmp) {
if ((nkeywords = qemuParseKeywords(tmp+1,
&keywords,
&values, 0)) < 0)
return NULL;
} else {
nkeywords = 0;
}
if (VIR_ALLOC(def) < 0) {
virReportOOMError();
goto cleanup;
}
/* 'tap' could turn into libvirt type=ethernet, type=bridge or
* type=network, but we can't tell, so use the generic config */
if (STRPREFIX(val, "tap,"))
def->type = VIR_DOMAIN_NET_TYPE_ETHERNET;
else if (STRPREFIX(val, "socket"))
def->type = VIR_DOMAIN_NET_TYPE_CLIENT;
else if (STRPREFIX(val, "user"))
def->type = VIR_DOMAIN_NET_TYPE_USER;
else
def->type = VIR_DOMAIN_NET_TYPE_ETHERNET;
for (i = 0 ; i < nkeywords ; i++) {
if (STREQ(keywords[i], "vlan")) {
if (virStrToLong_i(values[i], NULL, 10, &wantvlan) < 0) {
qemuReportError(VIR_ERR_INTERNAL_ERROR,
_("cannot parse vlan in '%s'"), val);
virDomainNetDefFree(def);
def = NULL;
goto cleanup;
}
} else if (def->type == VIR_DOMAIN_NET_TYPE_ETHERNET &&
STREQ(keywords[i], "script") && STRNEQ(values[i], "")) {
def->data.ethernet.script = values[i];
values[i] = NULL;
} else if (def->type == VIR_DOMAIN_NET_TYPE_ETHERNET &&
STREQ(keywords[i], "ifname")) {
def->ifname = values[i];
values[i] = NULL;
}
}
/* Done parsing the nic backend. Now to try and find corresponding
* frontend, based off vlan number. NB this assumes a 1-1 mapping
*/
nic = qemuFindNICForVLAN(nnics, nics, wantvlan);
if (!nic) {
virDomainNetDefFree(def);
def = NULL;
goto cleanup;
}
if (!STRPREFIX(nic, "nic")) {
qemuReportError(VIR_ERR_INTERNAL_ERROR,
_("cannot parse NIC definition '%s'"), nic);
virDomainNetDefFree(def);
def = NULL;
goto cleanup;
}
for (i = 0 ; i < nkeywords ; i++) {
VIR_FREE(keywords[i]);
VIR_FREE(values[i]);
}
VIR_FREE(keywords);
VIR_FREE(values);
if (STRPREFIX(nic, "nic,")) {
if ((nkeywords = qemuParseKeywords(nic + strlen("nic,"),
&keywords,
&values, 0)) < 0) {
virDomainNetDefFree(def);
def = NULL;
goto cleanup;
}
} else {
nkeywords = 0;
}
for (i = 0 ; i < nkeywords ; i++) {
if (STREQ(keywords[i], "macaddr")) {
genmac = 0;
if (virParseMacAddr(values[i], def->mac) < 0) {
qemuReportError(VIR_ERR_INTERNAL_ERROR,
_("unable to parse mac address '%s'"),
values[i]);
virDomainNetDefFree(def);
def = NULL;
goto cleanup;
}
} else if (STREQ(keywords[i], "model")) {
def->model = values[i];
values[i] = NULL;
}
}
if (genmac)
virCapabilitiesGenerateMac(caps, def->mac);
cleanup:
for (i = 0 ; i < nkeywords ; i++) {
VIR_FREE(keywords[i]);
VIR_FREE(values[i]);
}
VIR_FREE(keywords);
VIR_FREE(values);
return def;
}
/*
* Tries to parse a QEMU PCI device
*/
static virDomainHostdevDefPtr
qemuParseCommandLinePCI(const char *val)
{
virDomainHostdevDefPtr def = NULL;
int bus = 0, slot = 0, func = 0;
const char *start;
char *end;
if (!STRPREFIX(val, "host=")) {
qemuReportError(VIR_ERR_INTERNAL_ERROR,
_("unknown PCI device syntax '%s'"), val);
VIR_FREE(def);
goto cleanup;
}
start = val + strlen("host=");
if (virStrToLong_i(start, &end, 16, &bus) < 0 || *end != ':') {
qemuReportError(VIR_ERR_INTERNAL_ERROR,
_("cannot extract PCI device bus '%s'"), val);
VIR_FREE(def);
goto cleanup;
}
start = end + 1;
if (virStrToLong_i(start, &end, 16, &slot) < 0 || *end != '.') {
qemuReportError(VIR_ERR_INTERNAL_ERROR,
_("cannot extract PCI device slot '%s'"), val);
VIR_FREE(def);
goto cleanup;
}
start = end + 1;
if (virStrToLong_i(start, NULL, 16, &func) < 0) {
qemuReportError(VIR_ERR_INTERNAL_ERROR,
_("cannot extract PCI device function '%s'"), val);
VIR_FREE(def);
goto cleanup;
}
if (VIR_ALLOC(def) < 0) {
virReportOOMError();
goto cleanup;
}
def->mode = VIR_DOMAIN_HOSTDEV_MODE_SUBSYS;
def->managed = 1;
def->source.subsys.type = VIR_DOMAIN_HOSTDEV_SUBSYS_TYPE_PCI;
def->source.subsys.u.pci.bus = bus;
def->source.subsys.u.pci.slot = slot;
def->source.subsys.u.pci.function = func;
cleanup:
return def;
}
/*
* Tries to parse a QEMU USB device
*/
static virDomainHostdevDefPtr
qemuParseCommandLineUSB(const char *val)
{
virDomainHostdevDefPtr def = NULL;
int first = 0, second = 0;
const char *start;
char *end;
if (!STRPREFIX(val, "host:")) {
qemuReportError(VIR_ERR_INTERNAL_ERROR,
_("unknown USB device syntax '%s'"), val);
VIR_FREE(def);
goto cleanup;
}
start = val + strlen("host:");
if (strchr(start, ':')) {
if (virStrToLong_i(start, &end, 16, &first) < 0 || *end != ':') {
qemuReportError(VIR_ERR_INTERNAL_ERROR,
_("cannot extract USB device vendor '%s'"), val);
VIR_FREE(def);
goto cleanup;
}
start = end + 1;
if (virStrToLong_i(start, NULL, 16, &second) < 0) {
qemuReportError(VIR_ERR_INTERNAL_ERROR,
_("cannot extract USB device product '%s'"), val);
VIR_FREE(def);
goto cleanup;
}
} else {
if (virStrToLong_i(start, &end, 10, &first) < 0 || *end != '.') {
qemuReportError(VIR_ERR_INTERNAL_ERROR,
_("cannot extract USB device bus '%s'"), val);
VIR_FREE(def);
goto cleanup;
}
start = end + 1;
if (virStrToLong_i(start, NULL, 10, &second) < 0) {
qemuReportError(VIR_ERR_INTERNAL_ERROR,
_("cannot extract USB device address '%s'"), val);
VIR_FREE(def);
goto cleanup;
}
}
if (VIR_ALLOC(def) < 0) {
virReportOOMError();
goto cleanup;
}
def->mode = VIR_DOMAIN_HOSTDEV_MODE_SUBSYS;
def->managed = 0;
def->source.subsys.type = VIR_DOMAIN_HOSTDEV_SUBSYS_TYPE_USB;
if (*end == '.') {
def->source.subsys.u.usb.bus = first;
def->source.subsys.u.usb.device = second;
} else {
def->source.subsys.u.usb.vendor = first;
def->source.subsys.u.usb.product = second;
}
cleanup:
return def;
}
/*
* Tries to parse a QEMU serial/parallel device
*/
static virDomainChrDefPtr
qemuParseCommandLineChr(const char *val)
{
virDomainChrDefPtr def;
if (VIR_ALLOC(def) < 0)
goto no_memory;
if (STREQ(val, "null")) {
def->type = VIR_DOMAIN_CHR_TYPE_NULL;
} else if (STREQ(val, "vc")) {
def->type = VIR_DOMAIN_CHR_TYPE_VC;
} else if (STREQ(val, "pty")) {
def->type = VIR_DOMAIN_CHR_TYPE_PTY;
} else if (STRPREFIX(val, "file:")) {
def->type = VIR_DOMAIN_CHR_TYPE_FILE;
def->data.file.path = strdup(val+strlen("file:"));
if (!def->data.file.path)
goto no_memory;
} else if (STRPREFIX(val, "pipe:")) {
def->type = VIR_DOMAIN_CHR_TYPE_PIPE;
def->data.file.path = strdup(val+strlen("pipe:"));
if (!def->data.file.path)
goto no_memory;
} else if (STREQ(val, "stdio")) {
def->type = VIR_DOMAIN_CHR_TYPE_STDIO;
} else if (STRPREFIX(val, "udp:")) {
const char *svc1, *host2, *svc2;
def->type = VIR_DOMAIN_CHR_TYPE_UDP;
val += strlen("udp:");
svc1 = strchr(val, ':');
host2 = svc1 ? strchr(svc1, '@') : NULL;
svc2 = host2 ? strchr(host2, ':') : NULL;
if (svc1)
def->data.udp.connectHost = strndup(val, svc1-val);
else
def->data.udp.connectHost = strdup(val);
if (!def->data.udp.connectHost)
goto no_memory;
if (svc1) {
svc1++;
if (host2)
def->data.udp.connectService = strndup(svc1, host2-svc1);
else
def->data.udp.connectService = strdup(svc1);
if (!def->data.udp.connectService)
goto no_memory;
}
if (host2) {
host2++;
if (svc2)
def->data.udp.bindHost = strndup(host2, svc2-host2);
else
def->data.udp.bindHost = strdup(host2);
if (!def->data.udp.bindHost)
goto no_memory;
}
if (svc2) {
svc2++;
def->data.udp.bindService = strdup(svc2);
if (!def->data.udp.bindService)
goto no_memory;
}
} else if (STRPREFIX(val, "tcp:") ||
STRPREFIX(val, "telnet:")) {
const char *opt, *svc;
def->type = VIR_DOMAIN_CHR_TYPE_TCP;
if (STRPREFIX(val, "tcp:")) {
val += strlen("tcp:");
} else {
val += strlen("telnet:");
def->data.tcp.protocol = VIR_DOMAIN_CHR_TCP_PROTOCOL_TELNET;
}
svc = strchr(val, ':');
if (!svc) {
qemuReportError(VIR_ERR_INTERNAL_ERROR,
_("cannot find port number in character device %s"), val);
goto error;
}
opt = strchr(svc, ',');
if (opt && strstr(opt, "server"))
def->data.tcp.listen = 1;
def->data.tcp.host = strndup(val, svc-val);
if (!def->data.tcp.host)
goto no_memory;
svc++;
if (opt) {
def->data.tcp.service = strndup(svc, opt-svc);
} else {
def->data.tcp.service = strdup(svc);
}
if (!def->data.tcp.service)
goto no_memory;
} else if (STRPREFIX(val, "unix:")) {
const char *opt;
val += strlen("unix:");
opt = strchr(val, ',');
def->type = VIR_DOMAIN_CHR_TYPE_UNIX;
if (opt) {
if (strstr(opt, "listen"))
def->data.nix.listen = 1;
def->data.nix.path = strndup(val, opt-val);
} else {
def->data.nix.path = strdup(val);
}
if (!def->data.nix.path)
goto no_memory;
} else if (STRPREFIX(val, "/dev")) {
def->type = VIR_DOMAIN_CHR_TYPE_DEV;
def->data.file.path = strdup(val);
if (!def->data.file.path)
goto no_memory;
} else {
qemuReportError(VIR_ERR_INTERNAL_ERROR,
_("unknown character device syntax %s"), val);
goto error;
}
return def;
no_memory:
virReportOOMError();
error:
virDomainChrDefFree(def);
return NULL;
}
static virCPUDefPtr
qemuInitGuestCPU(virDomainDefPtr dom)
{
if (!dom->cpu) {
virCPUDefPtr cpu;
if (VIR_ALLOC(cpu) < 0) {
virReportOOMError();
return NULL;
}
cpu->type = VIR_CPU_TYPE_GUEST;
cpu->match = VIR_CPU_MATCH_EXACT;
dom->cpu = cpu;
}
return dom->cpu;
}
static int
qemuParseCommandLineCPU(virDomainDefPtr dom,
const char *val)
{
virCPUDefPtr cpu;
const char *p = val;
const char *next;
if (!(cpu = qemuInitGuestCPU(dom)))
goto error;
do {
if (*p == '\0' || *p == ',')
goto syntax;
if ((next = strchr(p, ',')))
next++;
if (!cpu->model) {
if (next)
cpu->model = strndup(p, next - p - 1);
else
cpu->model = strdup(p);
if (!cpu->model)
goto no_memory;
}
else if (*p == '+' || *p == '-') {
char *feature;
int policy;
int ret;
if (*p == '+')
policy = VIR_CPU_FEATURE_REQUIRE;
else
policy = VIR_CPU_FEATURE_DISABLE;
p++;
if (*p == '\0' || *p == ',')
goto syntax;
if (next)
feature = strndup(p, next - p - 1);
else
feature = strdup(p);
ret = virCPUDefAddFeature(cpu, feature, policy);
VIR_FREE(feature);
if (ret < 0)
goto error;
}
} while ((p = next));
return 0;
syntax:
qemuReportError(VIR_ERR_INTERNAL_ERROR,
_("unknown CPU syntax '%s'"), val);
goto error;
no_memory:
virReportOOMError();
error:
return -1;
}
static int
qemuParseCommandLineSmp(virDomainDefPtr dom,
const char *val)
{
unsigned int sockets = 0;
unsigned int cores = 0;
unsigned int threads = 0;
int i;
int nkws;
char **kws;
char **vals;
int n;
char *end;
int ret;
nkws = qemuParseKeywords(val, &kws, &vals, 1);
if (nkws < 0)
return -1;
for (i = 0; i < nkws; i++) {
if (vals[i] == NULL) {
if (i > 0 ||
virStrToLong_i(kws[i], &end, 10, &n) < 0 || *end != '\0')
goto syntax;
dom->vcpus = n;
} else {
if (virStrToLong_i(vals[i], &end, 10, &n) < 0 || *end != '\0')
goto syntax;
if (STREQ(kws[i], "sockets"))
sockets = n;
else if (STREQ(kws[i], "cores"))
cores = n;
else if (STREQ(kws[i], "threads"))
threads = n;
else
goto syntax;
}
}
if (sockets && cores && threads) {
virCPUDefPtr cpu;
if (!(cpu = qemuInitGuestCPU(dom)))
goto error;
cpu->sockets = sockets;
cpu->cores = cores;
cpu->threads = threads;
} else if (sockets || cores || threads)
goto syntax;
ret = 0;
cleanup:
for (i = 0; i < nkws; i++) {
VIR_FREE(kws[i]);
VIR_FREE(vals[i]);
}
VIR_FREE(kws);
VIR_FREE(vals);
return ret;
syntax:
qemuReportError(VIR_ERR_INTERNAL_ERROR,
_("cannot parse CPU topology '%s'"), val);
error:
ret = -1;
goto cleanup;
}
/*
* Analyse the env and argv settings and reconstruct a
* virDomainDefPtr representing these settings as closely
* as is practical. This is not an exact science....
*/
virDomainDefPtr qemuParseCommandLine(virCapsPtr caps,
const char **progenv,
const char **progargv)
{
virDomainDefPtr def;
int i;
int nographics = 0;
int fullscreen = 0;
char *path;
int nnics = 0;
const char **nics = NULL;
int video = VIR_DOMAIN_VIDEO_TYPE_CIRRUS;
int nvirtiodisk = 0;
if (!progargv[0]) {
qemuReportError(VIR_ERR_INTERNAL_ERROR,
"%s", _("no emulator path found"));
return NULL;
}
if (VIR_ALLOC(def) < 0)
goto no_memory;
virUUIDGenerate(def->uuid);
def->id = -1;
def->memory = def->maxmem = 64 * 1024;
def->vcpus = 1;
def->clock.offset = VIR_DOMAIN_CLOCK_OFFSET_UTC;
def->features = (1 << VIR_DOMAIN_FEATURE_ACPI)
/*| (1 << VIR_DOMAIN_FEATURE_APIC)*/;
def->onReboot = VIR_DOMAIN_LIFECYCLE_RESTART;
def->onCrash = VIR_DOMAIN_LIFECYCLE_DESTROY;
def->onPoweroff = VIR_DOMAIN_LIFECYCLE_DESTROY;
def->virtType = VIR_DOMAIN_VIRT_QEMU;
if (!(def->emulator = strdup(progargv[0])))
goto no_memory;
if (strstr(def->emulator, "kvm")) {
def->virtType = VIR_DOMAIN_VIRT_KVM;
def->features |= (1 << VIR_DOMAIN_FEATURE_PAE);
}
if (strstr(def->emulator, "xenner")) {
def->virtType = VIR_DOMAIN_VIRT_KVM;
def->os.type = strdup("xen");
} else {
def->os.type = strdup("hvm");
}
if (!def->os.type)
goto no_memory;
if (STRPREFIX(def->emulator, "qemu"))
path = def->emulator;
else
path = strstr(def->emulator, "qemu");
if (path &&
STRPREFIX(path, "qemu-system-"))
def->os.arch = strdup(path + strlen("qemu-system-"));
else
def->os.arch = strdup("i686");
if (!def->os.arch)
goto no_memory;
#define WANT_VALUE() \
const char *val = progargv[++i]; \
if (!val) { \
qemuReportError(VIR_ERR_INTERNAL_ERROR, \
_("missing value for %s argument"), arg); \
goto error; \
}
/* One initial loop to get list of NICs, so we
* can correlate them later */
for (i = 1 ; progargv[i] ; i++) {
const char *arg = progargv[i];
/* Make sure we have a single - for all options to
simplify next logic */
if (STRPREFIX(arg, "--"))
arg++;
if (STREQ(arg, "-net")) {
WANT_VALUE();
if (STRPREFIX(val, "nic")) {
if (VIR_REALLOC_N(nics, nnics+1) < 0)
goto no_memory;
nics[nnics++] = val;
}
}
}
/* Now the real processing loop */
for (i = 1 ; progargv[i] ; i++) {
const char *arg = progargv[i];
/* Make sure we have a single - for all options to
simplify next logic */
if (STRPREFIX(arg, "--"))
arg++;
if (STREQ(arg, "-vnc")) {
virDomainGraphicsDefPtr vnc;
char *tmp;
WANT_VALUE();
if (VIR_ALLOC(vnc) < 0)
goto no_memory;
vnc->type = VIR_DOMAIN_GRAPHICS_TYPE_VNC;
tmp = strchr(val, ':');
if (tmp) {
char *opts;
if (virStrToLong_i(tmp+1, &opts, 10, &vnc->data.vnc.port) < 0) {
VIR_FREE(vnc);
qemuReportError(VIR_ERR_INTERNAL_ERROR, \
_("cannot parse VNC port '%s'"), tmp+1);
goto error;
}
vnc->data.vnc.listenAddr = strndup(val, tmp-val);
if (!vnc->data.vnc.listenAddr) {
VIR_FREE(vnc);
goto no_memory;
}
vnc->data.vnc.port += 5900;
vnc->data.vnc.autoport = 0;
} else {
vnc->data.vnc.autoport = 1;
}
if (VIR_REALLOC_N(def->graphics, def->ngraphics+1) < 0) {
virDomainGraphicsDefFree(vnc);
goto no_memory;
}
def->graphics[def->ngraphics++] = vnc;
} else if (STREQ(arg, "-m")) {
int mem;
WANT_VALUE();
if (virStrToLong_i(val, NULL, 10, &mem) < 0) {
qemuReportError(VIR_ERR_INTERNAL_ERROR, \
_("cannot parse memory level '%s'"), val);
goto error;
}
def->memory = def->maxmem = mem * 1024;
} else if (STREQ(arg, "-smp")) {
WANT_VALUE();
if (qemuParseCommandLineSmp(def, val) < 0)
goto error;
} else if (STREQ(arg, "-uuid")) {
WANT_VALUE();
if (virUUIDParse(val, def->uuid) < 0) {
qemuReportError(VIR_ERR_INTERNAL_ERROR, \
_("cannot parse UUID '%s'"), val);
goto error;
}
} else if (STRPREFIX(arg, "-hd") ||
STRPREFIX(arg, "-sd") ||
STRPREFIX(arg, "-fd") ||
STREQ(arg, "-cdrom")) {
WANT_VALUE();
virDomainDiskDefPtr disk;
if (VIR_ALLOC(disk) < 0)
goto no_memory;
if (STRPREFIX(val, "/dev/"))
disk->type = VIR_DOMAIN_DISK_TYPE_BLOCK;
else
disk->type = VIR_DOMAIN_DISK_TYPE_FILE;
if (STREQ(arg, "-cdrom")) {
disk->device = VIR_DOMAIN_DISK_DEVICE_CDROM;
disk->dst = strdup("hdc");
disk->readonly = 1;
} else {
if (STRPREFIX(arg, "-fd")) {
disk->device = VIR_DOMAIN_DISK_DEVICE_FLOPPY;
disk->bus = VIR_DOMAIN_DISK_BUS_FDC;
} else {
disk->device = VIR_DOMAIN_DISK_DEVICE_DISK;
if (STRPREFIX(arg, "-hd"))
disk->bus = VIR_DOMAIN_DISK_BUS_IDE;
else
disk->bus = VIR_DOMAIN_DISK_BUS_SCSI;
}
disk->dst = strdup(arg + 1);
}
disk->src = strdup(val);
if (!disk->src ||
!disk->dst) {
virDomainDiskDefFree(disk);
goto no_memory;
}
if (virDomainDiskDefAssignAddress(disk) < 0)
goto error;
if (VIR_REALLOC_N(def->disks, def->ndisks+1) < 0) {
virDomainDiskDefFree(disk);
goto no_memory;
}
def->disks[def->ndisks++] = disk;
} else if (STREQ(arg, "-no-acpi")) {
def->features &= ~(1 << VIR_DOMAIN_FEATURE_ACPI);
} else if (STREQ(arg, "-no-reboot")) {
def->onReboot = VIR_DOMAIN_LIFECYCLE_DESTROY;
} else if (STREQ(arg, "-no-kvm")) {
def->virtType = VIR_DOMAIN_VIRT_QEMU;
} else if (STREQ(arg, "-nographic")) {
nographics = 1;
} else if (STREQ(arg, "-full-screen")) {
fullscreen = 1;
} else if (STREQ(arg, "-localtime")) {
def->clock.offset = VIR_DOMAIN_CLOCK_OFFSET_LOCALTIME;
} else if (STREQ(arg, "-kernel")) {
WANT_VALUE();
if (!(def->os.kernel = strdup(val)))
goto no_memory;
} else if (STREQ(arg, "-initrd")) {
WANT_VALUE();
if (!(def->os.initrd = strdup(val)))
goto no_memory;
} else if (STREQ(arg, "-append")) {
WANT_VALUE();
if (!(def->os.cmdline = strdup(val)))
goto no_memory;
} else if (STREQ(arg, "-boot")) {
int n, b = 0;
WANT_VALUE();
for (n = 0 ; val[n] && b < VIR_DOMAIN_BOOT_LAST ; n++) {
if (val[n] == 'a')
def->os.bootDevs[b++] = VIR_DOMAIN_BOOT_FLOPPY;
else if (val[n] == 'c')
def->os.bootDevs[b++] = VIR_DOMAIN_BOOT_DISK;
else if (val[n] == 'd')
def->os.bootDevs[b++] = VIR_DOMAIN_BOOT_CDROM;
else if (val[n] == 'n')
def->os.bootDevs[b++] = VIR_DOMAIN_BOOT_NET;
}
def->os.nBootDevs = b;
} else if (STREQ(arg, "-name")) {
WANT_VALUE();
if (!(def->name = strdup(val)))
goto no_memory;
} else if (STREQ(arg, "-M")) {
WANT_VALUE();
if (!(def->os.machine = strdup(val)))
goto no_memory;
} else if (STREQ(arg, "-serial")) {
WANT_VALUE();
if (STRNEQ(val, "none")) {
virDomainChrDefPtr chr;
if (!(chr = qemuParseCommandLineChr(val)))
goto error;
if (VIR_REALLOC_N(def->serials, def->nserials+1) < 0) {
virDomainChrDefFree(chr);
goto no_memory;
}
chr->targetType = VIR_DOMAIN_CHR_TARGET_TYPE_SERIAL;
chr->target.port = def->nserials;
def->serials[def->nserials++] = chr;
}
} else if (STREQ(arg, "-parallel")) {
WANT_VALUE();
if (STRNEQ(val, "none")) {
virDomainChrDefPtr chr;
if (!(chr = qemuParseCommandLineChr(val)))
goto error;
if (VIR_REALLOC_N(def->parallels, def->nparallels+1) < 0) {
virDomainChrDefFree(chr);
goto no_memory;
}
chr->targetType = VIR_DOMAIN_CHR_TARGET_TYPE_PARALLEL;
chr->target.port = def->nparallels;
def->parallels[def->nparallels++] = chr;
}
} else if (STREQ(arg, "-usbdevice")) {
WANT_VALUE();
if (STREQ(val, "tablet") ||
STREQ(val, "mouse")) {
virDomainInputDefPtr input;
if (VIR_ALLOC(input) < 0)
goto no_memory;
input->bus = VIR_DOMAIN_INPUT_BUS_USB;
if (STREQ(val, "tablet"))
input->type = VIR_DOMAIN_INPUT_TYPE_TABLET;
else
input->type = VIR_DOMAIN_INPUT_TYPE_MOUSE;
if (VIR_REALLOC_N(def->inputs, def->ninputs+1) < 0) {
virDomainInputDefFree(input);
goto no_memory;
}
def->inputs[def->ninputs++] = input;
} else if (STRPREFIX(val, "disk:")) {
virDomainDiskDefPtr disk;
if (VIR_ALLOC(disk) < 0)
goto no_memory;
disk->src = strdup(val + strlen("disk:"));
if (!disk->src) {
virDomainDiskDefFree(disk);
goto no_memory;
}
if (STRPREFIX(disk->src, "/dev/"))
disk->type = VIR_DOMAIN_DISK_TYPE_BLOCK;
else
disk->type = VIR_DOMAIN_DISK_TYPE_FILE;
disk->device = VIR_DOMAIN_DISK_DEVICE_DISK;
disk->bus = VIR_DOMAIN_DISK_BUS_USB;
if (!(disk->dst = strdup("sda"))) {
virDomainDiskDefFree(disk);
goto no_memory;
}
if (VIR_REALLOC_N(def->disks, def->ndisks+1) < 0) {
virDomainDiskDefFree(disk);
goto no_memory;
}
def->disks[def->ndisks++] = disk;
} else {
virDomainHostdevDefPtr hostdev;
if (!(hostdev = qemuParseCommandLineUSB(val)))
goto error;
if (VIR_REALLOC_N(def->hostdevs, def->nhostdevs+1) < 0) {
virDomainHostdevDefFree(hostdev);
goto no_memory;
}
def->hostdevs[def->nhostdevs++] = hostdev;
}
} else if (STREQ(arg, "-net")) {
WANT_VALUE();
if (!STRPREFIX(val, "nic") && STRNEQ(val, "none")) {
virDomainNetDefPtr net;
if (!(net = qemuParseCommandLineNet(caps, val, nnics, nics)))
goto error;
if (VIR_REALLOC_N(def->nets, def->nnets+1) < 0) {
virDomainNetDefFree(net);
goto no_memory;
}
def->nets[def->nnets++] = net;
}
} else if (STREQ(arg, "-drive")) {
virDomainDiskDefPtr disk;
WANT_VALUE();
if (!(disk = qemuParseCommandLineDisk(val, nvirtiodisk)))
goto error;
if (VIR_REALLOC_N(def->disks, def->ndisks+1) < 0) {
virDomainDiskDefFree(disk);
goto no_memory;
}
def->disks[def->ndisks++] = disk;
if (disk->bus == VIR_DOMAIN_DISK_BUS_VIRTIO)
nvirtiodisk++;
} else if (STREQ(arg, "-pcidevice")) {
virDomainHostdevDefPtr hostdev;
WANT_VALUE();
if (!(hostdev = qemuParseCommandLinePCI(val)))
goto error;
if (VIR_REALLOC_N(def->hostdevs, def->nhostdevs+1) < 0) {
virDomainHostdevDefFree(hostdev);
goto no_memory;
}
def->hostdevs[def->nhostdevs++] = hostdev;
} else if (STREQ(arg, "-soundhw")) {
const char *start;
WANT_VALUE();
start = val;
while (start) {
const char *tmp = strchr(start, ',');
int type = -1;
if (STRPREFIX(start, "pcspk")) {
type = VIR_DOMAIN_SOUND_MODEL_PCSPK;
} else if (STRPREFIX(start, "sb16")) {
type = VIR_DOMAIN_SOUND_MODEL_SB16;
} else if (STRPREFIX(start, "es1370")) {
type = VIR_DOMAIN_SOUND_MODEL_ES1370;
} else if (STRPREFIX(start, "ac97")) {
type = VIR_DOMAIN_SOUND_MODEL_AC97;
}
if (type != -1) {
virDomainSoundDefPtr snd;
if (VIR_ALLOC(snd) < 0)
goto no_memory;
snd->model = type;
if (VIR_REALLOC_N(def->sounds, def->nsounds+1) < 0) {
VIR_FREE(snd);
goto no_memory;
}
def->sounds[def->nsounds++] = snd;
}
start = tmp ? tmp + 1 : NULL;
}
} else if (STREQ(arg, "-watchdog")) {
WANT_VALUE();
int model = virDomainWatchdogModelTypeFromString (val);
if (model != -1) {
virDomainWatchdogDefPtr wd;
if (VIR_ALLOC(wd) < 0)
goto no_memory;
wd->model = model;
wd->action = VIR_DOMAIN_WATCHDOG_ACTION_RESET;
def->watchdog = wd;
}
} else if (STREQ(arg, "-watchdog-action") && def->watchdog) {
WANT_VALUE();
int action = virDomainWatchdogActionTypeFromString (val);
if (action != -1)
def->watchdog->action = action;
} else if (STREQ(arg, "-bootloader")) {
WANT_VALUE();
def->os.bootloader = strdup(val);
if (!def->os.bootloader)
goto no_memory;
} else if (STREQ(arg, "-vmwarevga")) {
video = VIR_DOMAIN_VIDEO_TYPE_VMVGA;
} else if (STREQ(arg, "-std-vga")) {
video = VIR_DOMAIN_VIDEO_TYPE_VGA;
} else if (STREQ(arg, "-vga")) {
WANT_VALUE();
if (STRNEQ(val, "none")) {
video = qemuVideoTypeFromString(val);
if (video < 0) {
qemuReportError(VIR_ERR_INTERNAL_ERROR,
_("unknown video adapter type '%s'"), val);
goto error;
}
}
} else if (STREQ(arg, "-cpu")) {
WANT_VALUE();
if (qemuParseCommandLineCPU(def, val) < 0)
goto error;
} else if (STREQ(arg, "-domid")) {
WANT_VALUE();
/* ignore, generted on the fly */
} else if (STREQ(arg, "-usb")) {
/* ignore, always added by libvirt */
} else if (STREQ(arg, "-pidfile")) {
WANT_VALUE();
/* ignore, used by libvirt as needed */
} else if (STREQ(arg, "-incoming")) {
WANT_VALUE();
/* ignore, used via restore/migrate APIs */
} else if (STREQ(arg, "-monitor")) {
WANT_VALUE();
/* ignore, used internally by libvirt */
} else if (STREQ(arg, "-S")) {
/* ignore, always added by libvirt */
} else {
VIR_WARN(_("unknown QEMU argument '%s' during conversion"), arg);
#if 0
qemuReportError(VIR_ERR_INTERNAL_ERROR,
_("unknown argument '%s'"), arg);
goto error;
#endif
}
}
#undef WANT_VALUE
if (!nographics && def->ngraphics == 0) {
virDomainGraphicsDefPtr sdl;
const char *display = qemuFindEnv(progenv, "DISPLAY");
const char *xauth = qemuFindEnv(progenv, "XAUTHORITY");
if (VIR_ALLOC(sdl) < 0)
goto no_memory;
sdl->type = VIR_DOMAIN_GRAPHICS_TYPE_SDL;
sdl->data.sdl.fullscreen = fullscreen;
if (display &&
!(sdl->data.sdl.display = strdup(display))) {
VIR_FREE(sdl);
goto no_memory;
}
if (xauth &&
!(sdl->data.sdl.xauth = strdup(xauth))) {
VIR_FREE(sdl);
goto no_memory;
}
if (VIR_REALLOC_N(def->graphics, def->ngraphics+1) < 0) {
virDomainGraphicsDefFree(sdl);
goto no_memory;
}
def->graphics[def->ngraphics++] = sdl;
}
if (def->ngraphics) {
virDomainVideoDefPtr vid;
if (VIR_ALLOC(vid) < 0)
goto no_memory;
if (def->virtType == VIR_DOMAIN_VIRT_XEN)
vid->type = VIR_DOMAIN_VIDEO_TYPE_XEN;
else
vid->type = video;
vid->vram = virDomainVideoDefaultRAM(def, vid->type);
vid->heads = 1;
if (VIR_REALLOC_N(def->videos, def->nvideos+1) < 0) {
virDomainVideoDefFree(vid);
goto no_memory;
}
def->videos[def->nvideos++] = vid;
}
VIR_FREE(nics);
if (!def->name) {
if (!(def->name = strdup("unnamed")))
goto no_memory;
}
if (virDomainDefAddImplicitControllers(def) < 0)
goto error;
return def;
no_memory:
virReportOOMError();
error:
virDomainDefFree(def);
VIR_FREE(nics);
return NULL;
}
virDomainDefPtr qemuParseCommandLineString(virCapsPtr caps,
const char *args)
{
const char **progenv = NULL;
const char **progargv = NULL;
virDomainDefPtr def = NULL;
int i;
if (qemuStringToArgvEnv(args, &progenv, &progargv) < 0)
goto cleanup;
def = qemuParseCommandLine(caps, progenv, progargv);
cleanup:
for (i = 0 ; progargv && progargv[i] ; i++)
VIR_FREE(progargv[i]);
VIR_FREE(progargv);
for (i = 0 ; progenv && progenv[i] ; i++)
VIR_FREE(progenv[i]);
VIR_FREE(progenv);
return def;
}
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