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libvirt/src/qemu_conf.c
Jim Meyering 1469bcf6c5 qemu_conf.c: add a comment suggesting why we leave a dead-store 
* src/qemu_conf.c (qemuBuildHostNetStr): Do not remove the type_sep=','
dead store, since not having it would be a problem if we ever add a
new attribute=VAL option.
2009-09-04 18:59:29 +02:00

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/*
* qemu_conf.c: QEMU configuration management
*
* Copyright (C) 2006, 2007, 2008, 2009 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 "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"
#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")
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",
NULL, /* no arg needed for xen */
NULL /* don't support vbox */);
#define PROC_MOUNT_BUF_LEN 255
int qemudLoadDriverConfig(struct qemud_driver *driver,
const char *filename) {
virConfPtr conf;
virConfValuePtr p;
char *user;
char *group;
int i;
/* Setup 2 critical defaults */
if (!(driver->vncListen = strdup("127.0.0.1"))) {
virReportOOMError(NULL);
return -1;
}
if (!(driver->vncTLSx509certdir = strdup(SYSCONF_DIR "/pki/libvirt-vnc"))) {
virReportOOMError(NULL);
return -1;
}
#ifdef HAVE_MNTENT_H
/* 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(NULL, 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)) { \
qemudReportError(NULL, NULL, NULL, VIR_ERR_INTERNAL_ERROR, \
"remoteReadConfigFile: %s: %s: expected type " #typ "\n", \
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(NULL);
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(NULL);
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(NULL);
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(NULL);
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(NULL);
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(NULL);
virConfFree(conf);
return -1;
}
if (virGetUserID(NULL, 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(NULL);
virConfFree(conf);
return -1;
}
if (virGetGroupID(NULL, group, &driver->group) < 0) {
VIR_FREE(group);
virConfFree(conf);
return -1;
}
VIR_FREE(group);
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_device_acl 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(NULL);
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(NULL);
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(NULL);
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(NULL);
virConfFree(conf);
return -1;
}
}
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, "/usr/bin/qemu",
"/usr/bin/qemu-system-x86_64", arch_info_i686_flags, 4 },
{ "x86_64", 64, NULL, "/usr/bin/qemu-system-x86_64",
NULL, arch_info_x86_64_flags, 2 },
{ "arm", 32, NULL, "/usr/bin/qemu-system-arm", NULL, NULL, 0 },
{ "mips", 32, NULL, "/usr/bin/qemu-system-mips", NULL, NULL, 0 },
{ "mipsel", 32, NULL, "/usr/bin/qemu-system-mipsel", NULL, NULL, 0 },
{ "sparc", 32, NULL, "/usr/bin/qemu-system-sparc", NULL, NULL, 0 },
{ "ppc", 32, NULL, "/usr/bin/qemu-system-ppc", NULL, NULL, 0 },
};
static const struct qemu_arch_info const arch_info_xen[] = {
{ "i686", 32, "xenner", "/usr/bin/xenner", NULL, arch_info_i686_flags, 4 },
{ "x86_64", 64, "xenner", "/usr/bin/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 error;
if (!(machine->name = strndup(p, t - p))) {
VIR_FREE(machine);
goto error;
}
if (VIR_REALLOC_N(list, nitems + 1) < 0) {
VIR_FREE(machine->name);
VIR_FREE(machine);
goto error;
}
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 error;
}
} while ((p = next));
*machines = list;
*nmachines = nitems;
return 0;
error:
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(NULL, 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(NULL, 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
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];
virCapsGuestDomainInfoPtr info = &guest->arch.defaultInfo;
virCapsGuestMachinePtr *list;
if (!STREQ(ostype, guest->ostype) ||
!STREQ(arch, guest->arch.name) ||
wordsize != guest->arch.wordsize ||
!STREQ(emulator, info->emulator))
continue;
if (emulator_mtime != info->emulator_mtime) {
VIR_DEBUG("mtime on %s has changed, refreshing machine types",
info->emulator);
return 0;
}
/* It sucks to have to dup these, when we're most likely going
* to free the old caps anyway - except if an error occurs, we'll
* stick with the old caps.
* Also, if we get OOM here, just let the caller try and probe
* the binary directly, which will probably fail too.
*/
if (VIR_ALLOC_N(list, info->nmachines) < 0)
return 0;
for (i = 0; i < info->nmachines; i++) {
if (VIR_ALLOC(list[i]) < 0) {
virCapabilitiesFreeMachines(list, info->nmachines);
return 0;
}
if (info->machines[i]->name &&
!(list[i]->name = strdup(info->machines[i]->name))) {
virCapabilitiesFreeMachines(list, info->nmachines);
return 0;
}
if (info->machines[i]->canonical &&
!(list[i]->canonical = strdup(info->machines[i]->canonical))) {
virCapabilitiesFreeMachines(list, info->nmachines);
return 0;
}
}
*machines = list;
*nmachines = info->nmachines;
return 1;
}
return 0;
}
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;
const char *kvmbin = NULL;
const char *binary = NULL;
time_t binary_mtime;
virCapsGuestMachinePtr *machines = NULL;
int nmachines = 0;
struct stat st;
/* Check for existance of base emulator, or alternate base
* which can be used with magic cpu choice
*/
if (access(info->binary, X_OK) == 0)
binary = info->binary;
else if (info->altbinary && access(info->altbinary, X_OK) == 0)
binary = info->altbinary;
/* Can use acceleration for KVM/KQEMU if
* - host & guest arches match
* Or
* - hostarch is x86_64 and guest arch is i686
* The latter simply needs "-cpu qemu32"
*/
if (STREQ(info->arch, hostmachine) ||
(STREQ(hostmachine, "x86_64") && STREQ(info->arch, "i686"))) {
const char *const kvmbins[] = { "/usr/bin/qemu-kvm", /* Fedora */
"/usr/bin/kvm" }; /* Upstream .spec */
for (i = 0; i < ARRAY_CARDINALITY(kvmbins); ++i) {
if (access(kvmbins[i], X_OK) == 0 &&
access("/dev/kvm", F_OK) == 0) {
haskvm = 1;
kvmbin = kvmbins[i];
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)
return -1;
if (!(machine->name = strdup(info->machine))) {
VIR_FREE(machine);
return -1;
}
if (VIR_ALLOC_N(machines, nmachines) < 0) {
VIR_FREE(machine->name);
VIR_FREE(machine);
return -1;
}
machines[0] = machine;
nmachines = 1;
} 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)
return -1;
}
/* 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) {
for (i = 0; i < nmachines; i++) {
VIR_FREE(machines[i]->name);
VIR_FREE(machines[i]);
}
VIR_FREE(machines);
return -1;
}
guest->arch.defaultInfo.emulator_mtime = binary_mtime;
if (hvm) {
if (virCapabilitiesAddGuestDomain(guest,
"qemu",
NULL,
NULL,
0,
NULL) == NULL)
return -1;
if (haskqemu &&
virCapabilitiesAddGuestDomain(guest,
"kqemu",
NULL,
NULL,
0,
NULL) == NULL)
return -1;
if (haskvm &&
virCapabilitiesAddGuestDomain(guest,
"kvm",
kvmbin,
NULL,
0,
NULL) == NULL)
return -1;
} else {
if (virCapabilitiesAddGuestDomain(guest,
"kvm",
NULL,
NULL,
0,
NULL) == NULL)
return -1;
}
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)
return -1;
}
}
return 0;
}
virCapsPtr qemudCapsInit(virCapsPtr old_caps) {
struct utsname utsname;
virCapsPtr caps;
int i;
/* 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");
}
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 */
if (access("/usr/bin/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;
}
}
/* QEMU Requires an emulator in the XML */
virCapabilitiesSetEmulatorRequired(caps);
return caps;
no_memory:
virCapabilitiesFree(caps);
return NULL;
}
static unsigned int qemudComputeCmdFlags(const char *help,
unsigned int version,
unsigned int is_kvm,
unsigned int kvm_version)
{
unsigned int 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, "-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, "-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 (version >= 9000)
flags |= QEMUD_CMD_FLAG_VNC_COLON;
if (is_kvm && (version >= 10000 || kvm_version >= 74))
flags |= QEMUD_CMD_FLAG_VNET_HDR;
/*
* 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;
} 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;
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 *help,
unsigned int *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);
qemudReportError(NULL, NULL, NULL, VIR_ERR_INTERNAL_ERROR,
_("cannot parse QEMU version number in '%s'"),
p ? p : help);
VIR_FREE(p);
return -1;
}
int qemudExtractVersionInfo(const char *qemu,
unsigned int *retversion,
unsigned int *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 int flags = 0;
if (retflags)
*retflags = 0;
if (retversion)
*retversion = 0;
if (virExec(NULL, 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(NULL, errno, "%s",
_("Unable to read QEMU help output"));
goto cleanup2;
}
if (qemudParseHelpStr(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(virConnectPtr conn,
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) {
char ebuf[1024];
qemudReportError(conn, NULL, NULL, VIR_ERR_INTERNAL_ERROR,
_("Cannot find QEMU binary %s: %s"), binary,
virStrerror(errno, ebuf, sizeof ebuf));
return -1;
}
if (qemudExtractVersionInfo(binary, &driver->qemuVersion, NULL) < 0) {
return -1;
}
return 0;
}
int
qemudNetworkIfaceConnect(virConnectPtr conn,
struct qemud_driver *driver,
virDomainNetDefPtr net,
int 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) {
virNetworkPtr network = virNetworkLookupByName(conn,
net->data.network.name);
if (!network)
return -1;
brname = virNetworkGetBridgeName(network);
virNetworkFree(network);
if (brname == NULL)
return -1;
} else if (net->type == VIR_DOMAIN_NET_TYPE_BRIDGE) {
brname = strdup(net->data.bridge.brname);
} else {
qemudReportError(conn, NULL, NULL, VIR_ERR_INTERNAL_ERROR,
_("Network type %d is not supported"), net->type);
return -1;
}
if (!driver->brctl && (err = brInit(&driver->brctl))) {
virReportSystemError(conn, 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(conn);
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. */
qemudReportError(conn, NULL, NULL, VIR_ERR_INTERNAL_ERROR,
_("Failed to add tap interface to bridge. "
"%s is not a bridge device"), brname);
} else if (template_ifname) {
virReportSystemError(conn, err,
_("Failed to add tap interface to bridge '%s'"),
brname);
} else {
virReportSystemError(conn, err,
_("Failed to add tap interface '%s' to bridge '%s'"),
net->ifname, brname);
}
if (template_ifname)
VIR_FREE(net->ifname);
tapfd = -1;
}
cleanup:
VIR_FREE(brname);
return tapfd;
}
static const char *
qemuNetTypeToHostNet(int type)
{
switch (type) {
case VIR_DOMAIN_NET_TYPE_NETWORK:
case VIR_DOMAIN_NET_TYPE_BRIDGE:
case VIR_DOMAIN_NET_TYPE_ETHERNET:
return "tap";
case VIR_DOMAIN_NET_TYPE_CLIENT:
case VIR_DOMAIN_NET_TYPE_SERVER:
case VIR_DOMAIN_NET_TYPE_MCAST:
return "socket";
case VIR_DOMAIN_NET_TYPE_USER:
default:
return "user";
}
}
int
qemuAssignNetNames(virDomainDefPtr def,
virDomainNetDefPtr net)
{
char *nic_name, *hostnet_name;
int i, nic_index = 0, hostnet_index = 0;
for (i = 0; i < def->nnets; i++) {
if (def->nets[i] == net)
continue;
if (!def->nets[i]->nic_name || !def->nets[i]->hostnet_name)
continue;
if ((def->nets[i]->model == NULL && net->model == NULL) ||
(def->nets[i]->model != NULL && net->model != NULL &&
STREQ(def->nets[i]->model, net->model)))
++nic_index;
if (STREQ(qemuNetTypeToHostNet(def->nets[i]->type),
qemuNetTypeToHostNet(net->type)))
++hostnet_index;
}
if (virAsprintf(&nic_name, "%s.%d",
net->model ? net->model : "nic",
nic_index) < 0)
return -1;
if (virAsprintf(&hostnet_name, "%s.%d",
qemuNetTypeToHostNet(net->type),
hostnet_index) < 0) {
VIR_FREE(nic_name);
return -1;
}
net->nic_name = nic_name;
net->hostnet_name = hostnet_name;
return 0;
}
int
qemuBuildNicStr(virConnectPtr conn,
virDomainNetDefPtr net,
const char *prefix,
char type_sep,
int vlan,
char **str)
{
if (virAsprintf(str,
"%snic%cmacaddr=%02x:%02x:%02x:%02x:%02x:%02x,vlan=%d%s%s%s%s",
prefix ? prefix : "",
type_sep,
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->nic_name ? ",name=" : ""),
(net->nic_name ? net->nic_name : "")) < 0) {
virReportOOMError(conn);
return -1;
}
return 0;
}
int
qemuBuildHostNetStr(virConnectPtr conn,
virDomainNetDefPtr net,
const char *prefix,
char type_sep,
int vlan,
const char *tapfd,
char **str)
{
switch (net->type) {
case VIR_DOMAIN_NET_TYPE_NETWORK:
case VIR_DOMAIN_NET_TYPE_BRIDGE:
if (virAsprintf(str, "%stap%cfd=%s,vlan=%d%s%s",
prefix ? prefix : "",
type_sep, tapfd, vlan,
(net->hostnet_name ? ",name=" : ""),
(net->hostnet_name ? net->hostnet_name : "")) < 0) {
virReportOOMError(conn);
return -1;
}
break;
case VIR_DOMAIN_NET_TYPE_ETHERNET:
{
virBuffer buf = VIR_BUFFER_INITIALIZER;
if (prefix)
virBufferAdd(&buf, prefix, strlen(prefix));
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 = ',';
}
virBufferVSprintf(&buf, "%cvlan=%d", type_sep, vlan);
if (net->hostnet_name) {
virBufferVSprintf(&buf, "%cname=%s", type_sep,
net->hostnet_name);
type_sep = ','; /* dead-store, but leave it, in case... */
}
if (virBufferError(&buf)) {
virReportOOMError(conn);
return -1;
}
*str = virBufferContentAndReset(&buf);
}
break;
case VIR_DOMAIN_NET_TYPE_CLIENT:
case VIR_DOMAIN_NET_TYPE_SERVER:
case VIR_DOMAIN_NET_TYPE_MCAST:
{
const char *mode = NULL;
switch (net->type) {
case VIR_DOMAIN_NET_TYPE_CLIENT:
mode = "connect";
break;
case VIR_DOMAIN_NET_TYPE_SERVER:
mode = "listen";
break;
case VIR_DOMAIN_NET_TYPE_MCAST:
mode = "mcast";
break;
}
if (virAsprintf(str, "%ssocket%c%s=%s:%d,vlan=%d%s%s",
prefix ? prefix : "",
type_sep, mode,
net->data.socket.address,
net->data.socket.port,
vlan,
(net->hostnet_name ? ",name=" : ""),
(net->hostnet_name ? net->hostnet_name : "")) < 0) {
virReportOOMError(conn);
return -1;
}
}
break;
case VIR_DOMAIN_NET_TYPE_USER:
default:
if (virAsprintf(str, "%suser%cvlan=%d%s%s",
prefix ? prefix : "",
type_sep, vlan,
(net->hostnet_name ? ",name=" : ""),
(net->hostnet_name ? net->hostnet_name : "")) < 0) {
virReportOOMError(conn);
return -1;
}
break;
}
return 0;
}
static int qemudBuildCommandLineChrDevStr(virDomainChrDefPtr dev,
char *buf,
int buflen)
{
switch (dev->type) {
case VIR_DOMAIN_CHR_TYPE_NULL:
strncpy(buf, "null", buflen);
buf[buflen-1] = '\0';
break;
case VIR_DOMAIN_CHR_TYPE_VC:
strncpy(buf, "vc", buflen);
buf[buflen-1] = '\0';
break;
case VIR_DOMAIN_CHR_TYPE_PTY:
strncpy(buf, "pty", buflen);
buf[buflen-1] = '\0';
break;
case VIR_DOMAIN_CHR_TYPE_DEV:
if (snprintf(buf, buflen, "%s",
dev->data.file.path) >= buflen)
return -1;
break;
case VIR_DOMAIN_CHR_TYPE_FILE:
if (snprintf(buf, buflen, "file:%s",
dev->data.file.path) >= buflen)
return -1;
break;
case VIR_DOMAIN_CHR_TYPE_PIPE:
if (snprintf(buf, buflen, "pipe:%s",
dev->data.file.path) >= buflen)
return -1;
break;
case VIR_DOMAIN_CHR_TYPE_STDIO:
strncpy(buf, "stdio", buflen);
buf[buflen-1] = '\0';
break;
case VIR_DOMAIN_CHR_TYPE_UDP:
if (snprintf(buf, buflen, "udp:%s:%s@%s:%s",
dev->data.udp.connectHost,
dev->data.udp.connectService,
dev->data.udp.bindHost,
dev->data.udp.bindService) >= buflen)
return -1;
break;
case VIR_DOMAIN_CHR_TYPE_TCP:
if (dev->data.tcp.protocol == VIR_DOMAIN_CHR_TCP_PROTOCOL_TELNET) {
if (snprintf(buf, buflen, "telnet:%s:%s%s",
dev->data.tcp.host,
dev->data.tcp.service,
dev->data.tcp.listen ? ",server,nowait" : "") >= buflen)
return -1;
} else {
if (snprintf(buf, buflen, "tcp:%s:%s%s",
dev->data.tcp.host,
dev->data.tcp.service,
dev->data.tcp.listen ? ",server,nowait" : "") >= buflen)
return -1;
}
break;
case VIR_DOMAIN_CHR_TYPE_UNIX:
if (snprintf(buf, buflen, "unix:%s%s",
dev->data.nix.path,
dev->data.nix.listen ? ",server,nowait" : "") >= buflen)
return -1;
break;
}
return 0;
}
#define QEMU_SERIAL_PARAM_ACCEPTED_CHARS \
"abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789-_"
static int
qemuSafeSerialParamValue(virConnectPtr conn,
const char *value)
{
if (strspn(value, QEMU_SERIAL_PARAM_ACCEPTED_CHARS) != strlen (value)) {
qemudReportError(conn, NULL, NULL, VIR_ERR_INTERNAL_ERROR,
_("driver serial '%s' contains unsafe characters"),
value);
return -1;
}
return 0;
}
/*
* Constructs a argv suitable for launching qemu with config defined
* for a given virtual machine.
*/
int qemudBuildCommandLine(virConnectPtr conn,
struct qemud_driver *driver,
virDomainDefPtr def,
virDomainChrDefPtr monitor_chr,
unsigned int qemuCmdFlags,
const char ***retargv,
const char ***retenv,
int **tapfds,
int *ntapfds,
const char *migrateFrom) {
int i;
char memory[50];
char vcpus[50];
char boot[VIR_DOMAIN_BOOT_LAST];
struct utsname ut;
int disableKQEMU = 0;
int disableKVM = 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];
const char *cpu = NULL;
uname_normalize(&ut);
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)) {
qemudReportError(conn, NULL, NULL, 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)) {
qemudReportError(conn, NULL, NULL, 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)) {
qemudReportError(conn, NULL, NULL, 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;
/*
* 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")))
cpu = "qemu32";
#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)
#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(vcpus, sizeof(vcpus), "%lu", def->vcpus);
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 (cpu) {
ADD_ARG_LIT("-cpu");
ADD_ARG_LIT(cpu);
}
if (disableKQEMU)
ADD_ARG_LIT("-no-kqemu");
if (disableKVM)
ADD_ARG_LIT("-no-kvm");
ADD_ARG_LIT("-m");
ADD_ARG_LIT(memory);
if (def->hugepage_backed) {
if (!driver->hugetlbfs_mount) {
qemudReportError(conn, NULL, NULL, VIR_ERR_INTERNAL_ERROR,
"%s", _("hugetlbfs filesystem is not mounted"));
goto error;
}
if (!driver->hugepage_path) {
qemudReportError(conn, NULL, NULL, VIR_ERR_INTERNAL_ERROR,
"%s", _("hugepages are disabled by administrator config"));
goto error;
}
if (!(qemuCmdFlags & QEMUD_CMD_FLAG_MEM_PATH)) {
qemudReportError(conn, NULL, NULL, VIR_ERR_INTERNAL_ERROR,
_("hugepage backing not supported by '%s'"),
def->emulator);
goto error;
}
ADD_ARG_LIT("-mem-path");
ADD_ARG_LIT(driver->hugepage_path);
}
ADD_ARG_LIT("-smp");
ADD_ARG_LIT(vcpus);
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 (qemuCmdFlags & QEMUD_CMD_FLAG_DOMID) {
ADD_ARG_LIT("-domid");
ADD_ARG_LIT(domid);
}
/*
* 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 (monitor_chr) {
char buf[4096];
if (qemudBuildCommandLineChrDevStr(monitor_chr, buf, sizeof(buf)) < 0)
goto error;
ADD_ARG_LIT("-monitor");
ADD_ARG_LIT(buf);
}
if (def->localtime)
ADD_ARG_LIT("-localtime");
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;
}
}
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")) {
qemudReportError(conn, NULL, NULL, VIR_ERR_INTERNAL_ERROR,
_("unsupported driver name '%s' for disk '%s'"),
disk->driverName, disk->src);
goto error;
}
}
/* 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++) {
virBuffer opt = VIR_BUFFER_INITIALIZER;
char *optstr;
int bootable = 0;
virDomainDiskDefPtr disk = def->disks[i];
int idx = virDiskNameToIndex(disk->dst);
const char *bus = virDomainDiskQEMUBusTypeToString(disk->bus);
if (disk->bus == VIR_DOMAIN_DISK_BUS_USB) {
if (disk->device == VIR_DOMAIN_DISK_DEVICE_DISK) {
ADD_USBDISK(disk->src);
} else {
qemudReportError(conn, NULL, NULL, VIR_ERR_INTERNAL_ERROR,
_("unsupported usb disk type for '%s'"), disk->src);
goto error;
}
continue;
}
if (idx < 0) {
qemudReportError(conn, NULL, NULL, VIR_ERR_INTERNAL_ERROR,
_("unsupported disk type '%s'"), disk->dst);
goto error;
}
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;
}
virBufferVSprintf(&opt, "file=%s", disk->src ? disk->src : "");
virBufferVSprintf(&opt, ",if=%s", bus);
if (disk->device == VIR_DOMAIN_DISK_DEVICE_CDROM)
virBufferAddLit(&opt, ",media=cdrom");
virBufferVSprintf(&opt, ",index=%d", idx);
if (bootable &&
disk->device == VIR_DOMAIN_DISK_DEVICE_DISK)
virBufferAddLit(&opt, ",boot=on");
if (disk->driverType &&
qemuCmdFlags & QEMUD_CMD_FLAG_DRIVE_FORMAT)
virBufferVSprintf(&opt, ",format=%s", disk->driverType);
if (disk->serial &&
(qemuCmdFlags & QEMUD_CMD_FLAG_DRIVE_SERIAL)) {
if (qemuSafeSerialParamValue(conn, 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 (virBufferError(&opt)) {
virReportOOMError(conn);
goto error;
}
optstr = virBufferContentAndReset(&opt);
ADD_ARG_LIT("-drive");
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 {
qemudReportError(conn, NULL, NULL, 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 {
qemudReportError(conn, NULL, NULL, VIR_ERR_INTERNAL_ERROR,
_("unsupported disk type '%s'"), disk->dst);
goto error;
}
}
snprintf(file, PATH_MAX, "%s", disk->src);
ADD_ARG_LIT(dev);
ADD_ARG_LIT(file);
}
}
if (!def->nnets) {
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 = NULL;
net->vlan = i;
if ((qemuCmdFlags & QEMUD_CMD_FLAG_NET_NAME) &&
qemuAssignNetNames(def, net) < 0)
goto no_memory;
if (qemuBuildNicStr(conn, net, NULL, ',', net->vlan, &nic) < 0)
goto error;
ADD_ARG_LIT("-net");
ADD_ARG(nic);
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) {
close(tapfd);
goto no_memory;
}
(*tapfds)[(*ntapfds)++] = tapfd;
if (virAsprintf(&tapfd_name, "%d", tapfd) < 0)
goto no_memory;
}
if (qemuBuildHostNetStr(conn, net, NULL, ',',
net->vlan, tapfd_name, &host) < 0) {
VIR_FREE(tapfd_name);
goto error;
}
ADD_ARG_LIT("-net");
ADD_ARG(host);
VIR_FREE(tapfd_name);
}
}
if (!def->nserials) {
ADD_ARG_LIT("-serial");
ADD_ARG_LIT("none");
} else {
for (i = 0 ; i < def->nserials ; i++) {
char buf[4096];
virDomainChrDefPtr serial = def->serials[i];
if (qemudBuildCommandLineChrDevStr(serial, buf, sizeof(buf)) < 0)
goto error;
ADD_ARG_LIT("-serial");
ADD_ARG_LIT(buf);
}
}
if (!def->nparallels) {
ADD_ARG_LIT("-parallel");
ADD_ARG_LIT("none");
} else {
for (i = 0 ; i < def->nparallels ; i++) {
char buf[4096];
virDomainChrDefPtr parallel = def->parallels[i];
if (qemudBuildCommandLineChrDevStr(parallel, buf, sizeof(buf)) < 0)
goto error;
ADD_ARG_LIT("-parallel");
ADD_ARG_LIT(buf);
}
}
ADD_ARG_LIT("-usb");
for (i = 0 ; i < def->ninputs ; i++) {
virDomainInputDefPtr input = def->inputs[i];
if (input->bus == VIR_DOMAIN_INPUT_BUS_USB) {
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))
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);
}
} 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 (def->nvideos) {
if (def->nvideos > 1) {
qemudReportError(conn, NULL, NULL, 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) {
qemudReportError(conn, NULL, NULL, VIR_ERR_INTERNAL_ERROR,
_("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:
qemudReportError(conn, NULL, NULL, VIR_ERR_INTERNAL_ERROR,
_("video type %s is not supported with QEMU"),
virDomainVideoTypeToString(def->videos[0]->type));
goto error;
}
}
}
/* Add sound hardware */
if (def->nsounds) {
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);
qemudReportError(conn, NULL, NULL, 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 host passthrough hardware */
for (i = 0 ; i < def->nhostdevs ; i++) {
int ret;
char* usbdev;
char* pcidev;
virDomainHostdevDefPtr hostdev = def->hostdevs[i];
/* USB */
if (hostdev->mode == VIR_DOMAIN_HOSTDEV_MODE_SUBSYS &&
hostdev->source.subsys.type == VIR_DOMAIN_HOSTDEV_SUBSYS_TYPE_USB) {
if(hostdev->source.subsys.u.usb.vendor) {
ret = virAsprintf(&usbdev, "host:%.4x:%.4x",
hostdev->source.subsys.u.usb.vendor,
hostdev->source.subsys.u.usb.product);
} else {
ret = virAsprintf(&usbdev, "host:%.3d.%.3d",
hostdev->source.subsys.u.usb.bus,
hostdev->source.subsys.u.usb.device);
}
if (ret < 0)
goto error;
ADD_ARG_LIT("-usbdevice");
ADD_ARG_LIT(usbdev);
VIR_FREE(usbdev);
}
/* PCI */
if (hostdev->mode == VIR_DOMAIN_HOSTDEV_MODE_SUBSYS &&
hostdev->source.subsys.type == VIR_DOMAIN_HOSTDEV_SUBSYS_TYPE_PCI) {
if (!(qemuCmdFlags & QEMUD_CMD_FLAG_PCIDEVICE)) {
qemudReportError(conn, NULL, NULL, VIR_ERR_NO_SUPPORT, "%s",
_("PCI device assignment is not supported by this version of qemu"));
goto error;
}
ret = virAsprintf(&pcidev, "host=%.2x:%.2x.%.1x",
hostdev->source.subsys.u.pci.bus,
hostdev->source.subsys.u.pci.slot,
hostdev->source.subsys.u.pci.function);
if (ret < 0) {
pcidev = NULL;
goto error;
}
ADD_ARG_LIT("-pcidevice");
ADD_ARG_LIT(pcidev);
VIR_FREE(pcidev);
}
}
if (migrateFrom) {
ADD_ARG_LIT("-incoming");
ADD_ARG_LIT(migrateFrom);
}
ADD_ARG(NULL);
ADD_ENV(NULL);
*retargv = qargv;
*retenv = qenv;
return 0;
no_memory:
virReportOOMError(conn);
error:
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
* optionall 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 containining
* 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];
}
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);
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
*/
static int
qemuParseCommandLineKeywords(virConnectPtr conn,
const char *str,
char ***retkeywords,
char ***retvalues)
{
int keywordCount = 0;
int keywordAlloc = 0;
char **keywords = NULL;
char **values = NULL;
const char *start = str;
int i;
*retkeywords = NULL;
*retvalues = NULL;
while (start) {
const char *separator;
const char *endmark;
char *keyword;
char *value;
if (!(separator = strchr(start, '='))) {
qemudReportError(conn, NULL, NULL, VIR_ERR_INTERNAL_ERROR,
_("malformed keyword arguments in '%s'"), str);
goto error;
}
if (!(keyword = strndup(start, separator - start)))
goto no_memory;
separator++;
endmark = strchr(separator, ',');
value = endmark ?
strndup(separator, endmark - separator) :
strdup(separator);
if (!value) {
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 ? endmark + 1 : NULL;
}
*retkeywords = keywords;
*retvalues = values;
return keywordCount;
no_memory:
virReportOOMError(conn);
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(virConnectPtr conn,
const char *val)
{
virDomainDiskDefPtr def = NULL;
char **keywords;
char **values;
int nkeywords;
int i;
int idx = -1;
if ((nkeywords = qemuParseCommandLineKeywords(conn, val,
&keywords,
&values)) < 0)
return NULL;
if (VIR_ALLOC(def) < 0) {
virReportOOMError(conn);
goto cleanup;
}
def->bus = VIR_DOMAIN_DISK_BUS_IDE;
def->device = VIR_DOMAIN_DISK_DEVICE_DISK;
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(conn);
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], "index")) {
if (virStrToLong_i(values[i], NULL, 10, &idx) < 0) {
virDomainDiskDefFree(def);
def = NULL;
qemudReportError(conn, NULL, NULL, VIR_ERR_INTERNAL_ERROR,
_("cannot parse drive index '%s'"), val);
goto cleanup;
}
}
}
if (!def->src &&
def->device == VIR_DOMAIN_DISK_DEVICE_DISK) {
qemudReportError(conn, NULL, NULL, VIR_ERR_INTERNAL_ERROR,
_("missing file parameter in drive '%s'"), val);
virDomainDiskDefFree(def);
def = NULL;
goto cleanup;
}
if (idx == -1) {
qemudReportError(conn, NULL, NULL, VIR_ERR_INTERNAL_ERROR,
_("missing index parameter in drive '%s'"), val);
virDomainDiskDefFree(def);
def = NULL;
goto cleanup;
}
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(conn);
goto cleanup;
}
if (STREQ(def->dst, "xvda"))
def->dst[3] = 'a' + idx;
else
def->dst[2] = 'a' + idx;
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(virConnectPtr conn,
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) {
qemudReportError(conn, NULL, NULL, 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];
qemudReportError(conn, NULL, NULL, 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(virConnectPtr conn,
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 = qemuParseCommandLineKeywords(conn,
tmp+1,
&keywords,
&values)) < 0)
return NULL;
} else {
nkeywords = 0;
}
if (VIR_ALLOC(def) < 0) {
virReportOOMError(conn);
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) {
qemudReportError(conn, NULL, NULL, 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(conn, nnics, nics, wantvlan);
if (!nic) {
virDomainNetDefFree(def);
def = NULL;
goto cleanup;
}
if (!STRPREFIX(nic, "nic")) {
qemudReportError(conn, NULL, NULL, 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 = qemuParseCommandLineKeywords(conn,
nic + strlen("nic,"),
&keywords,
&values)) < 0) {
virDomainNetDefFree(def);
def = NULL;
goto cleanup;
}
} else {
nkeywords = 0;
}
for (i = 0 ; i < nkeywords ; i++) {
if (STREQ(keywords[i], "macaddr")) {
genmac = 0;
virParseMacAddr(values[i], def->mac);
} 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(virConnectPtr conn,
const char *val)
{
virDomainHostdevDefPtr def = NULL;
int bus = 0, slot = 0, func = 0;
const char *start;
char *end;
if (!STRPREFIX(val, "host=")) {
qemudReportError(conn, NULL, NULL, 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 || *end != ':') {
qemudReportError(conn, NULL, NULL, 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 || *end != '.') {
qemudReportError(conn, NULL, NULL, 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) {
qemudReportError(conn, NULL, NULL, VIR_ERR_INTERNAL_ERROR,
_("cannot extract PCI device function '%s'"), val);
VIR_FREE(def);
goto cleanup;
}
if (VIR_ALLOC(def) < 0) {
virReportOOMError(conn);
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(virConnectPtr conn,
const char *val)
{
virDomainHostdevDefPtr def = NULL;
int first = 0, second = 0;
const char *start;
char *end;
if (!STRPREFIX(val, "host:")) {
qemudReportError(conn, NULL, NULL, VIR_ERR_INTERNAL_ERROR,
_("unknown PCI 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 || *end != ':') {
qemudReportError(conn, NULL, NULL, 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) {
qemudReportError(conn, NULL, NULL, VIR_ERR_INTERNAL_ERROR,
_("cannot extract PCI device product '%s'"), val);
VIR_FREE(def);
goto cleanup;
}
} else {
if (virStrToLong_i(start, &end, 10, &first) < 0 || !end || *end != '.') {
qemudReportError(conn, NULL, NULL, VIR_ERR_INTERNAL_ERROR,
_("cannot extract PCI device bus '%s'"), val);
VIR_FREE(def);
goto cleanup;
}
start = end + 1;
if (virStrToLong_i(start, NULL, 10, &second) < 0) {
qemudReportError(conn, NULL, NULL, VIR_ERR_INTERNAL_ERROR,
_("cannot extract PCI device address '%s'"), val);
VIR_FREE(def);
goto cleanup;
}
}
if (VIR_ALLOC(def) < 0) {
virReportOOMError(conn);
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(virConnectPtr conn,
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 (svc1) {
svc1++;
if (host2)
def->data.udp.connectService = strndup(svc1, host2-svc1);
else
def->data.udp.connectService = strdup(svc1);
}
if (host2) {
host2++;
if (svc2)
def->data.udp.bindHost = strndup(host2, svc2-host2);
else
def->data.udp.bindHost = strdup(host2);
}
if (svc2) {
svc2++;
def->data.udp.bindService = strdup(svc2);
}
} 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) {
qemudReportError(conn, NULL, NULL, 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);
svc++;
if (opt) {
def->data.tcp.service = strndup(svc, opt-svc);
} else {
def->data.tcp.service = strdup(svc);
}
} 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 {
qemudReportError(conn, NULL, NULL, VIR_ERR_INTERNAL_ERROR,
_("unknown character device syntax %s"), val);
goto error;
}
return def;
no_memory:
virReportOOMError(conn);
error:
virDomainChrDefFree(def);
return NULL;
}
/*
* 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(virConnectPtr conn,
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;
if (!progargv[0]) {
qemudReportError(conn, NULL, NULL, 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->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) { \
qemudReportError(conn, NULL, NULL, 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);
qemudReportError(conn, NULL, NULL, 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) {
qemudReportError(conn, NULL, NULL, VIR_ERR_INTERNAL_ERROR, \
_("cannot parse memory level '%s'"), val);
goto error;
}
def->memory = def->maxmem = mem * 1024;
} else if (STREQ(arg, "-smp")) {
int vcpus;
WANT_VALUE();
if (virStrToLong_i(val, NULL, 10, &vcpus) < 0) {
qemudReportError(conn, NULL, NULL, VIR_ERR_INTERNAL_ERROR, \
_("cannot parse CPU count '%s'"), val);
goto error;
}
def->vcpus = vcpus;
} else if (STREQ(arg, "-uuid")) {
WANT_VALUE();
if (virUUIDParse(val, def->uuid) < 0) {
qemudReportError(conn, NULL, NULL, 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 (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->localtime = 1;
} 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(conn, val)))
goto error;
if (VIR_REALLOC_N(def->serials, def->nserials+1) < 0) {
virDomainChrDefFree(chr);
goto no_memory;
}
chr->dstPort = def->nserials;
def->serials[def->nserials++] = chr;
}
} else if (STREQ(arg, "-parallel")) {
WANT_VALUE();
if (STRNEQ(val, "none")) {
virDomainChrDefPtr chr;
if (!(chr = qemuParseCommandLineChr(conn, val)))
goto error;
if (VIR_REALLOC_N(def->parallels, def->nparallels+1) < 0) {
virDomainChrDefFree(chr);
goto no_memory;
}
chr->dstPort = 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(conn, 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(conn, 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(conn, val)))
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, "-pcidevice")) {
virDomainHostdevDefPtr hostdev;
WANT_VALUE();
if (!(hostdev = qemuParseCommandLinePCI(conn, 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, "-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();
video = qemuVideoTypeFromString(val);
if (video < 0) {
qemudReportError(conn, NULL, NULL, VIR_ERR_INTERNAL_ERROR,
_("unknown video adapter type '%s'"), val);
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
qemudReportError(conn, NULL, NULL, 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;
}
return def;
no_memory:
virReportOOMError(conn);
error:
virDomainDefFree(def);
VIR_FREE(nics);
return NULL;
}
virDomainDefPtr qemuParseCommandLineString(virConnectPtr conn,
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(conn, 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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