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qemu / qemu / 6b30d735cf53e2391f521a64d2a19fe6ad9609c0 / . / system / vl.c
blob: 3b7057e6c669f4012204740f6baa9ff92b195899 [file] [log] [blame]
/*
* QEMU System Emulator
*
* Copyright (c) 2003-2008 Fabrice Bellard
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
#include "qemu/osdep.h"
#include "qemu/help-texts.h"
#include "qemu/datadir.h"
#include "qemu/units.h"
#include "qemu/module.h"
#include "qemu/target-info.h"
#include "exec/cpu-common.h"
#include "exec/page-vary.h"
#include "hw/qdev-properties.h"
#include "qapi/compat-policy.h"
#include "qapi/error.h"
#include "qobject/qdict.h"
#include "qobject/qstring.h"
#include "qobject/qjson.h"
#include "qemu-version.h"
#include "qemu/cutils.h"
#include "qemu/help_option.h"
#include "qemu/hw-version.h"
#include "qemu/uuid.h"
#include "qemu/target-info.h"
#include "system/reset.h"
#include "system/runstate.h"
#include "system/runstate-action.h"
#include "system/seccomp.h"
#include "system/tcg.h"
#include "system/xen.h"
#include "qemu/error-report.h"
#include "qemu/sockets.h"
#include "qemu/accel.h"
#include "qemu/async-teardown.h"
#include "hw/usb.h"
#include "hw/isa/isa.h"
#include "hw/scsi/scsi.h"
#include "hw/sd/sd.h"
#include "hw/display/vga.h"
#include "hw/firmware/smbios.h"
#include "hw/acpi/acpi.h"
#include "hw/xen/xen.h"
#include "hw/loader.h"
#include "monitor/qdev.h"
#include "net/net.h"
#include "net/slirp.h"
#include "monitor/monitor.h"
#include "ui/console.h"
#include "ui/input.h"
#include "system/system.h"
#include "system/numa.h"
#include "system/hostmem.h"
#include "exec/gdbstub.h"
#include "gdbstub/enums.h"
#include "qemu/timer.h"
#include "chardev/char.h"
#include "qemu/bitmap.h"
#include "qemu/log.h"
#include "system/blockdev.h"
#include "hw/block/block.h"
#include "hw/i386/x86.h"
#include "hw/i386/pc.h"
#include "migration/cpr.h"
#include "migration/misc.h"
#include "migration/snapshot.h"
#include "system/tpm.h"
#include "system/dma.h"
#include "hw/audio/soundhw.h"
#include "audio/audio.h"
#include "system/cpus.h"
#include "system/cpu-timers.h"
#include "exec/icount.h"
#include "migration/colo.h"
#include "migration/postcopy-ram.h"
#include "system/kvm.h"
#include "qapi/qobject-input-visitor.h"
#include "qemu/option.h"
#include "qemu/config-file.h"
#include "qemu/main-loop.h"
#ifdef CONFIG_VIRTFS
#include "fsdev/qemu-fsdev.h"
#endif
#include "system/qtest.h"
#ifdef CONFIG_TCG
#include "tcg/perf.h"
#endif
#include "disas/disas.h"
#include "trace.h"
#include "trace/control.h"
#include "qemu/plugin.h"
#include "qemu/queue.h"
#include "system/arch_init.h"
#include "system/confidential-guest-support.h"
#include "ui/qemu-spice.h"
#include "qapi/string-input-visitor.h"
#include "qapi/opts-visitor.h"
#include "qapi/clone-visitor.h"
#include "qom/object_interfaces.h"
#include "semihosting/semihost.h"
#include "crypto/init.h"
#include "system/replay.h"
#include "qapi/qapi-events-run-state.h"
#include "qapi/qapi-types-audio.h"
#include "qapi/qapi-visit-audio.h"
#include "qapi/qapi-visit-block-core.h"
#include "qapi/qapi-visit-compat.h"
#include "qapi/qapi-visit-machine.h"
#include "qapi/qapi-visit-migration.h"
#include "qapi/qapi-visit-ui.h"
#include "qapi/qapi-commands-block-core.h"
#include "qapi/qapi-commands-migration.h"
#include "qapi/qapi-commands-misc.h"
#include "qapi/qapi-visit-qom.h"
#include "qapi/qapi-commands-ui.h"
#include "block/qdict.h"
#include "qapi/qmp/qerror.h"
#include "system/iothread.h"
#include "qemu/guest-random.h"
#include "qemu/keyval.h"
#define MAX_VIRTIO_CONSOLES 1
typedef struct BlockdevOptionsQueueEntry {
BlockdevOptions *bdo;
Location loc;
QSIMPLEQ_ENTRY(BlockdevOptionsQueueEntry) entry;
} BlockdevOptionsQueueEntry;
typedef QSIMPLEQ_HEAD(, BlockdevOptionsQueueEntry) BlockdevOptionsQueue;
typedef struct ObjectOption {
ObjectOptions *opts;
QTAILQ_ENTRY(ObjectOption) next;
} ObjectOption;
typedef struct DeviceOption {
QDict *opts;
Location loc;
QTAILQ_ENTRY(DeviceOption) next;
} DeviceOption;
static const char *cpu_option;
static const char *mem_path;
static const char *incoming;
static const char *incoming_str[MIGRATION_CHANNEL_TYPE__MAX];
static MigrationChannel *incoming_channels[MIGRATION_CHANNEL_TYPE__MAX];
static const char *loadvm;
static const char *accelerators;
static bool have_custom_ram_size;
static const char *ram_memdev_id;
static QDict *machine_opts_dict;
static QTAILQ_HEAD(, ObjectOption) object_opts = QTAILQ_HEAD_INITIALIZER(object_opts);
static QTAILQ_HEAD(, DeviceOption) device_opts = QTAILQ_HEAD_INITIALIZER(device_opts);
static int display_remote;
static int snapshot;
static bool preconfig_requested;
static QemuPluginList plugin_list = QTAILQ_HEAD_INITIALIZER(plugin_list);
static BlockdevOptionsQueue bdo_queue = QSIMPLEQ_HEAD_INITIALIZER(bdo_queue);
static bool nographic = false;
static int mem_prealloc; /* force preallocation of physical target memory */
static const char *vga_model = NULL;
static DisplayOptions dpy;
static int num_serial_hds;
static Chardev **serial_hds;
static const char *log_mask;
static const char *log_file;
static bool list_data_dirs;
static const char *qtest_chrdev;
static const char *qtest_log;
static int has_defaults = 1;
static int default_audio = 1;
static int default_serial = 1;
static int default_parallel = 1;
static int default_monitor = 1;
static int default_floppy = 1;
static int default_cdrom = 1;
static bool auto_create_sdcard = true;
static int default_vga = 1;
static int default_net = 1;
static const struct {
const char *driver;
int *flag;
} default_list[] = {
{ .driver = "xen-console", .flag = &default_serial },
{ .driver = "isa-serial", .flag = &default_serial },
{ .driver = "isa-parallel", .flag = &default_parallel },
{ .driver = "isa-fdc", .flag = &default_floppy },
{ .driver = "floppy", .flag = &default_floppy },
{ .driver = "ide-cd", .flag = &default_cdrom },
{ .driver = "ide-hd", .flag = &default_cdrom },
{ .driver = "scsi-cd", .flag = &default_cdrom },
{ .driver = "scsi-hd", .flag = &default_cdrom },
{ .driver = "VGA", .flag = &default_vga },
{ .driver = "isa-vga", .flag = &default_vga },
{ .driver = "cirrus-vga", .flag = &default_vga },
{ .driver = "isa-cirrus-vga", .flag = &default_vga },
{ .driver = "vmware-svga", .flag = &default_vga },
{ .driver = "qxl-vga", .flag = &default_vga },
{ .driver = "virtio-vga", .flag = &default_vga },
{ .driver = "ati-vga", .flag = &default_vga },
{ .driver = "vhost-user-vga", .flag = &default_vga },
{ .driver = "virtio-vga-gl", .flag = &default_vga },
{ .driver = "virtio-vga-rutabaga", .flag = &default_vga },
};
static QemuOptsList qemu_rtc_opts = {
.name = "rtc",
.head = QTAILQ_HEAD_INITIALIZER(qemu_rtc_opts.head),
.merge_lists = true,
.desc = {
{
.name = "base",
.type = QEMU_OPT_STRING,
},{
.name = "clock",
.type = QEMU_OPT_STRING,
},{
.name = "driftfix",
.type = QEMU_OPT_STRING,
},
{ /* end of list */ }
},
};
static QemuOptsList qemu_option_rom_opts = {
.name = "option-rom",
.implied_opt_name = "romfile",
.head = QTAILQ_HEAD_INITIALIZER(qemu_option_rom_opts.head),
.desc = {
{
.name = "bootindex",
.type = QEMU_OPT_NUMBER,
}, {
.name = "romfile",
.type = QEMU_OPT_STRING,
},
{ /* end of list */ }
},
};
static QemuOptsList qemu_accel_opts = {
.name = "accel",
.implied_opt_name = "accel",
.head = QTAILQ_HEAD_INITIALIZER(qemu_accel_opts.head),
.desc = {
/*
* no elements => accept any
* sanity checking will happen later
* when setting accelerator properties
*/
{ }
},
};
static QemuOptsList qemu_boot_opts = {
.name = "boot-opts",
.implied_opt_name = "order",
.merge_lists = true,
.head = QTAILQ_HEAD_INITIALIZER(qemu_boot_opts.head),
.desc = {
{
.name = "order",
.type = QEMU_OPT_STRING,
}, {
.name = "once",
.type = QEMU_OPT_STRING,
}, {
.name = "menu",
.type = QEMU_OPT_BOOL,
}, {
.name = "splash",
.type = QEMU_OPT_STRING,
}, {
.name = "splash-time",
.type = QEMU_OPT_NUMBER,
}, {
.name = "reboot-timeout",
.type = QEMU_OPT_NUMBER,
}, {
.name = "strict",
.type = QEMU_OPT_BOOL,
},
{ /*End of list */ }
},
};
static QemuOptsList qemu_add_fd_opts = {
.name = "add-fd",
.head = QTAILQ_HEAD_INITIALIZER(qemu_add_fd_opts.head),
.desc = {
{
.name = "fd",
.type = QEMU_OPT_NUMBER,
.help = "file descriptor of which a duplicate is added to fd set",
},{
.name = "set",
.type = QEMU_OPT_NUMBER,
.help = "ID of the fd set to add fd to",
},{
.name = "opaque",
.type = QEMU_OPT_STRING,
.help = "free-form string used to describe fd",
},
{ /* end of list */ }
},
};
static QemuOptsList qemu_object_opts = {
.name = "object",
.implied_opt_name = "qom-type",
.head = QTAILQ_HEAD_INITIALIZER(qemu_object_opts.head),
.desc = {
{ }
},
};
static QemuOptsList qemu_tpmdev_opts = {
.name = "tpmdev",
.implied_opt_name = "type",
.head = QTAILQ_HEAD_INITIALIZER(qemu_tpmdev_opts.head),
.desc = {
/* options are defined in the TPM backends */
{ /* end of list */ }
},
};
static QemuOptsList qemu_overcommit_opts = {
.name = "overcommit",
.head = QTAILQ_HEAD_INITIALIZER(qemu_overcommit_opts.head),
.desc = {
{
.name = "mem-lock",
.type = QEMU_OPT_STRING,
},
{
.name = "cpu-pm",
.type = QEMU_OPT_BOOL,
},
{ /* end of list */ }
},
};
static QemuOptsList qemu_msg_opts = {
.name = "msg",
.head = QTAILQ_HEAD_INITIALIZER(qemu_msg_opts.head),
.desc = {
{
.name = "timestamp",
.type = QEMU_OPT_BOOL,
},
{
.name = "guest-name",
.type = QEMU_OPT_BOOL,
.help = "Prepends guest name for error messages but only if "
"-name guest is set otherwise option is ignored\n",
},
{ /* end of list */ }
},
};
static QemuOptsList qemu_name_opts = {
.name = "name",
.implied_opt_name = "guest",
.merge_lists = true,
.head = QTAILQ_HEAD_INITIALIZER(qemu_name_opts.head),
.desc = {
{
.name = "guest",
.type = QEMU_OPT_STRING,
.help = "Sets the name of the guest.\n"
"This name will be displayed in the SDL window caption.\n"
"The name will also be used for the VNC server",
}, {
.name = "process",
.type = QEMU_OPT_STRING,
.help = "Sets the name of the QEMU process, as shown in top etc",
}, {
.name = "debug-threads",
.type = QEMU_OPT_BOOL,
.help = "When enabled, name the individual threads; defaults off.\n"
"NOTE: The thread names are for debugging and not a\n"
"stable API.",
},
{ /* End of list */ }
},
};
static QemuOptsList qemu_mem_opts = {
.name = "memory",
.implied_opt_name = "size",
.head = QTAILQ_HEAD_INITIALIZER(qemu_mem_opts.head),
.merge_lists = true,
.desc = {
{
.name = "size",
.type = QEMU_OPT_SIZE,
},
{
.name = "slots",
.type = QEMU_OPT_NUMBER,
},
{
.name = "maxmem",
.type = QEMU_OPT_SIZE,
},
{ /* end of list */ }
},
};
static QemuOptsList qemu_icount_opts = {
.name = "icount",
.implied_opt_name = "shift",
.merge_lists = true,
.head = QTAILQ_HEAD_INITIALIZER(qemu_icount_opts.head),
.desc = {
{
.name = "shift",
.type = QEMU_OPT_STRING,
}, {
.name = "align",
.type = QEMU_OPT_BOOL,
}, {
.name = "sleep",
.type = QEMU_OPT_BOOL,
}, {
.name = "rr",
.type = QEMU_OPT_STRING,
}, {
.name = "rrfile",
.type = QEMU_OPT_STRING,
}, {
.name = "rrsnapshot",
.type = QEMU_OPT_STRING,
},
{ /* end of list */ }
},
};
static QemuOptsList qemu_fw_cfg_opts = {
.name = "fw_cfg",
.implied_opt_name = "name",
.head = QTAILQ_HEAD_INITIALIZER(qemu_fw_cfg_opts.head),
.desc = {
{
.name = "name",
.type = QEMU_OPT_STRING,
.help = "Sets the fw_cfg name of the blob to be inserted",
}, {
.name = "file",
.type = QEMU_OPT_STRING,
.help = "Sets the name of the file from which "
"the fw_cfg blob will be loaded",
}, {
.name = "string",
.type = QEMU_OPT_STRING,
.help = "Sets content of the blob to be inserted from a string",
}, {
.name = "gen_id",
.type = QEMU_OPT_STRING,
.help = "Sets id of the object generating the fw_cfg blob "
"to be inserted",
},
{ /* end of list */ }
},
};
static QemuOptsList qemu_action_opts = {
.name = "action",
.merge_lists = true,
.head = QTAILQ_HEAD_INITIALIZER(qemu_action_opts.head),
.desc = {
{
.name = "shutdown",
.type = QEMU_OPT_STRING,
},{
.name = "reboot",
.type = QEMU_OPT_STRING,
},{
.name = "panic",
.type = QEMU_OPT_STRING,
},{
.name = "watchdog",
.type = QEMU_OPT_STRING,
},
{ /* end of list */ }
},
};
const char *qemu_get_vm_name(void)
{
return qemu_name;
}
static void default_driver_disable(const char *driver)
{
int i;
if (!driver) {
return;
}
for (i = 0; i < ARRAY_SIZE(default_list); i++) {
if (strcmp(default_list[i].driver, driver) != 0)
continue;
*(default_list[i].flag) = 0;
}
}
static int default_driver_check(void *opaque, QemuOpts *opts, Error **errp)
{
const char *driver = qemu_opt_get(opts, "driver");
default_driver_disable(driver);
return 0;
}
static void default_driver_check_json(void)
{
DeviceOption *opt;
QTAILQ_FOREACH(opt, &device_opts, next) {
const char *driver = qdict_get_try_str(opt->opts, "driver");
default_driver_disable(driver);
}
}
static int parse_name(void *opaque, QemuOpts *opts, Error **errp)
{
const char *proc_name;
if (qemu_opt_get(opts, "debug-threads")) {
qemu_thread_naming(qemu_opt_get_bool(opts, "debug-threads", false));
}
qemu_name = qemu_opt_get(opts, "guest");
proc_name = qemu_opt_get(opts, "process");
if (proc_name) {
os_set_proc_name(proc_name);
}
return 0;
}
bool defaults_enabled(void)
{
return has_defaults;
}
#ifndef _WIN32
static int parse_add_fd(void *opaque, QemuOpts *opts, Error **errp)
{
int fd, dupfd, flags;
int64_t fdset_id;
const char *fd_opaque = NULL;
AddfdInfo *fdinfo;
fd = qemu_opt_get_number(opts, "fd", -1);
fdset_id = qemu_opt_get_number(opts, "set", -1);
fd_opaque = qemu_opt_get(opts, "opaque");
if (fd < 0) {
error_setg(errp, "fd option is required and must be non-negative");
return -1;
}
if (fd <= STDERR_FILENO) {
error_setg(errp, "fd cannot be a standard I/O stream");
return -1;
}
/*
* All fds inherited across exec() necessarily have FD_CLOEXEC
* clear, while qemu sets FD_CLOEXEC on all other fds used internally.
*/
flags = fcntl(fd, F_GETFD);
if (flags == -1 || (flags & FD_CLOEXEC)) {
error_setg(errp, "fd is not valid or already in use");
return -1;
}
if (fdset_id < 0) {
error_setg(errp, "set option is required and must be non-negative");
return -1;
}
#ifdef F_DUPFD_CLOEXEC
dupfd = fcntl(fd, F_DUPFD_CLOEXEC, 0);
#else
dupfd = dup(fd);
if (dupfd != -1) {
qemu_set_cloexec(dupfd);
}
#endif
if (dupfd == -1) {
error_setg(errp, "error duplicating fd: %s", strerror(errno));
return -1;
}
/* add the duplicate fd, and optionally the opaque string, to the fd set */
fdinfo = monitor_fdset_add_fd(dupfd, true, fdset_id, fd_opaque,
&error_abort);
g_free(fdinfo);
return 0;
}
static int cleanup_add_fd(void *opaque, QemuOpts *opts, Error **errp)
{
int fd;
fd = qemu_opt_get_number(opts, "fd", -1);
close(fd);
return 0;
}
#endif
/***********************************************************/
/* QEMU Block devices */
#define HD_OPTS "media=disk"
#define CDROM_OPTS "media=cdrom"
#define FD_OPTS ""
#define PFLASH_OPTS ""
#define MTD_OPTS ""
#define SD_OPTS ""
static int drive_init_func(void *opaque, QemuOpts *opts, Error **errp)
{
BlockInterfaceType *block_default_type = opaque;
return drive_new(opts, *block_default_type, errp) == NULL;
}
static int drive_enable_snapshot(void *opaque, QemuOpts *opts, Error **errp)
{
if (qemu_opt_get(opts, "snapshot") == NULL) {
qemu_opt_set(opts, "snapshot", "on", &error_abort);
}
return 0;
}
static void default_drive(int enable, int snapshot, BlockInterfaceType type,
int index, const char *optstr)
{
QemuOpts *opts;
DriveInfo *dinfo;
if (!enable || drive_get_by_index(type, index)) {
return;
}
opts = drive_add(type, index, NULL, optstr);
if (snapshot) {
drive_enable_snapshot(NULL, opts, NULL);
}
dinfo = drive_new(opts, type, &error_abort);
dinfo->is_default = true;
}
static void configure_blockdev(BlockdevOptionsQueue *bdo_queue,
MachineClass *machine_class, int snapshot)
{
/*
* If the currently selected machine wishes to override the
* units-per-bus property of its default HBA interface type, do so
* now.
*/
if (machine_class->units_per_default_bus) {
override_max_devs(machine_class->block_default_type,
machine_class->units_per_default_bus);
}
/* open the virtual block devices */
while (!QSIMPLEQ_EMPTY(bdo_queue)) {
BlockdevOptionsQueueEntry *bdo = QSIMPLEQ_FIRST(bdo_queue);
QSIMPLEQ_REMOVE_HEAD(bdo_queue, entry);
loc_push_restore(&bdo->loc);
qmp_blockdev_add(bdo->bdo, &error_fatal);
loc_pop(&bdo->loc);
qapi_free_BlockdevOptions(bdo->bdo);
g_free(bdo);
}
if (snapshot) {
qemu_opts_foreach(qemu_find_opts("drive"), drive_enable_snapshot,
NULL, NULL);
}
if (qemu_opts_foreach(qemu_find_opts("drive"), drive_init_func,
&machine_class->block_default_type, &error_fatal)) {
/* We printed help */
exit(0);
}
default_drive(default_cdrom, snapshot, machine_class->block_default_type, 2,
CDROM_OPTS);
default_drive(default_floppy, snapshot, IF_FLOPPY, 0, FD_OPTS);
default_drive(auto_create_sdcard, snapshot, IF_SD, 0, SD_OPTS);
}
static QemuOptsList qemu_smp_opts = {
.name = "smp-opts",
.implied_opt_name = "cpus",
.merge_lists = true,
.head = QTAILQ_HEAD_INITIALIZER(qemu_smp_opts.head),
.desc = {
{
.name = "cpus",
.type = QEMU_OPT_NUMBER,
}, {
.name = "drawers",
.type = QEMU_OPT_NUMBER,
}, {
.name = "books",
.type = QEMU_OPT_NUMBER,
}, {
.name = "sockets",
.type = QEMU_OPT_NUMBER,
}, {
.name = "dies",
.type = QEMU_OPT_NUMBER,
}, {
.name = "clusters",
.type = QEMU_OPT_NUMBER,
}, {
.name = "modules",
.type = QEMU_OPT_NUMBER,
}, {
.name = "cores",
.type = QEMU_OPT_NUMBER,
}, {
.name = "threads",
.type = QEMU_OPT_NUMBER,
}, {
.name = "maxcpus",
.type = QEMU_OPT_NUMBER,
},
{ /*End of list */ }
},
};
#if defined(CONFIG_POSIX) && !defined(EMSCRIPTEN)
static QemuOptsList qemu_run_with_opts = {
.name = "run-with",
.head = QTAILQ_HEAD_INITIALIZER(qemu_run_with_opts.head),
.desc = {
#if defined(CONFIG_LINUX)
{
.name = "async-teardown",
.type = QEMU_OPT_BOOL,
},
#endif
{
.name = "chroot",
.type = QEMU_OPT_STRING,
},
{
.name = "user",
.type = QEMU_OPT_STRING,
},
{ /* end of list */ }
},
};
#define qemu_add_run_with_opts() qemu_add_opts(&qemu_run_with_opts)
#else
#define qemu_add_run_with_opts()
#endif /* CONFIG_POSIX */
static void realtime_init(void)
{
if (should_mlock(mlock_state)) {
if (os_mlock(is_mlock_on_fault(mlock_state)) < 0) {
error_report("locking memory failed");
exit(1);
}
}
}
static void configure_msg(QemuOpts *opts)
{
message_with_timestamp = qemu_opt_get_bool(opts, "timestamp", false);
error_with_guestname = qemu_opt_get_bool(opts, "guest-name", false);
}
/***********************************************************/
/* USB devices */
static bool usb_parse(const char *cmdline, Error **errp)
{
g_assert(machine_usb(current_machine));
if (!usbdevice_create(cmdline)) {
error_setg(errp, "could not add USB device '%s'", cmdline);
return false;
}
return true;
}
/***********************************************************/
/* machine registration */
static MachineClass *find_machine(const char *name, GSList *machines)
{
GSList *el;
for (el = machines; el; el = el->next) {
MachineClass *mc = el->data;
if (!strcmp(mc->name, name) || !g_strcmp0(mc->alias, name)) {
return mc;
}
}
return NULL;
}
static MachineClass *find_default_machine(GSList *machines)
{
GSList *el;
MachineClass *default_machineclass = NULL;
for (el = machines; el; el = el->next) {
MachineClass *mc = el->data;
if (mc->is_default) {
assert(default_machineclass == NULL && "Multiple default machines");
default_machineclass = mc;
}
}
return default_machineclass;
}
static void version(void)
{
printf("QEMU emulator version " QEMU_FULL_VERSION "\n"
QEMU_COPYRIGHT "\n");
}
static void help(int exitcode)
{
version();
printf("usage: %s [options] [disk_image]\n\n"
"'disk_image' is a raw hard disk image for IDE hard disk 0\n\n",
g_get_prgname());
#define DEF(option, opt_arg, opt_enum, opt_help, arch_mask) \
if (qemu_arch_available(arch_mask)) \
fputs(opt_help, stdout);
#define ARCHHEADING(text, arch_mask) \
if (qemu_arch_available(arch_mask)) \
puts(stringify(text));
#define DEFHEADING(text) ARCHHEADING(text, QEMU_ARCH_ALL)
#include "qemu-options.def"
printf("\nDuring emulation, the following keys are useful:\n"
"ctrl-alt-f toggle full screen\n"
"ctrl-alt-n switch to virtual console 'n'\n"
"ctrl-alt-g toggle mouse and keyboard grab\n"
"\n"
"When using -nographic, press 'ctrl-a h' to get some help.\n"
"\n"
QEMU_HELP_BOTTOM "\n");
exit(exitcode);
}
enum {
#define DEF(option, opt_arg, opt_enum, opt_help, arch_mask) \
opt_enum,
#define DEFHEADING(text)
#define ARCHHEADING(text, arch_mask)
#include "qemu-options.def"
};
#define HAS_ARG 0x0001
typedef struct QEMUOption {
const char *name;
int flags;
int index;
uint32_t arch_mask;
} QEMUOption;
static const QEMUOption qemu_options[] = {
{ "h", 0, QEMU_OPTION_h, QEMU_ARCH_ALL },
#define DEF(option, opt_arg, opt_enum, opt_help, arch_mask) \
{ option, opt_arg, opt_enum, arch_mask },
#define DEFHEADING(text)
#define ARCHHEADING(text, arch_mask)
#include "qemu-options.def"
{ /* end of list */ }
};
typedef struct VGAInterfaceInfo {
const char *opt_name; /* option name */
const char *name; /* human-readable name */
/* Class names indicating that support is available.
* If no class is specified, the interface is always available */
const char *class_names[2];
} VGAInterfaceInfo;
static const VGAInterfaceInfo vga_interfaces[VGA_TYPE_MAX] = {
[VGA_NONE] = {
.opt_name = "none",
.name = "no graphic card",
},
[VGA_STD] = {
.opt_name = "std",
.name = "standard VGA",
.class_names = { "VGA", "isa-vga" },
},
[VGA_CIRRUS] = {
.opt_name = "cirrus",
.name = "Cirrus VGA",
.class_names = { "cirrus-vga", "isa-cirrus-vga" },
},
[VGA_VMWARE] = {
.opt_name = "vmware",
.name = "VMWare SVGA",
.class_names = { "vmware-svga" },
},
[VGA_VIRTIO] = {
.opt_name = "virtio",
.name = "Virtio VGA",
.class_names = { "virtio-vga" },
},
[VGA_QXL] = {
.opt_name = "qxl",
.name = "QXL VGA",
.class_names = { "qxl-vga" },
},
[VGA_TCX] = {
.opt_name = "tcx",
.name = "TCX framebuffer",
.class_names = { "sun-tcx" },
},
[VGA_CG3] = {
.opt_name = "cg3",
.name = "CG3 framebuffer",
.class_names = { "cgthree" },
},
#ifdef CONFIG_XEN_BACKEND
[VGA_XENFB] = {
.opt_name = "xenfb",
.name = "Xen paravirtualized framebuffer",
},
#endif
};
static bool vga_interface_available(VGAInterfaceType t)
{
const VGAInterfaceInfo *ti = &vga_interfaces[t];
assert(t < VGA_TYPE_MAX);
if (!ti->class_names[0] || module_object_class_by_name(ti->class_names[0])) {
return true;
}
if (ti->class_names[1] && module_object_class_by_name(ti->class_names[1])) {
return true;
}
return false;
}
static const char *
get_default_vga_model(const MachineClass *machine_class)
{
if (machine_class->default_display) {
for (int t = 0; t < VGA_TYPE_MAX; t++) {
const VGAInterfaceInfo *ti = &vga_interfaces[t];
if (ti->opt_name && vga_interface_available(t) &&
g_str_equal(ti->opt_name, machine_class->default_display)) {
return machine_class->default_display;
}
}
warn_report_once("Default display '%s' is not available in this binary",
machine_class->default_display);
return NULL;
} else if (vga_interface_available(VGA_CIRRUS)) {
return "cirrus";
} else if (vga_interface_available(VGA_STD)) {
return "std";
}
return NULL;
}
static void select_vgahw(const MachineClass *machine_class, const char *p)
{
const char *opts;
int t;
if (g_str_equal(p, "help")) {
const char *def = get_default_vga_model(machine_class);
for (t = 0; t < VGA_TYPE_MAX; t++) {
const VGAInterfaceInfo *ti = &vga_interfaces[t];
if (vga_interface_available(t) && ti->opt_name) {
printf("%-20s %s%s\n", ti->opt_name, ti->name ?: "",
(def && g_str_equal(ti->opt_name, def)) ?
" (default)" : "");
}
}
exit(0);
}
assert(vga_interface_type == VGA_NONE);
for (t = 0; t < VGA_TYPE_MAX; t++) {
const VGAInterfaceInfo *ti = &vga_interfaces[t];
if (ti->opt_name && strstart(p, ti->opt_name, &opts)) {
if (!vga_interface_available(t)) {
error_report("%s not available", ti->name);
exit(1);
}
vga_interface_type = t;
break;
}
}
if (t == VGA_TYPE_MAX) {
invalid_vga:
error_report("unknown vga type: %s", p);
exit(1);
}
while (*opts) {
const char *nextopt;
if (strstart(opts, ",retrace=", &nextopt)) {
opts = nextopt;
if (strstart(opts, "dumb", &nextopt))
vga_retrace_method = VGA_RETRACE_DUMB;
else if (strstart(opts, "precise", &nextopt))
vga_retrace_method = VGA_RETRACE_PRECISE;
else goto invalid_vga;
} else goto invalid_vga;
opts = nextopt;
}
}
static void parse_display_qapi(const char *str)
{
DisplayOptions *opts;
Visitor *v;
v = qobject_input_visitor_new_str(str, "type", &error_fatal);
visit_type_DisplayOptions(v, NULL, &opts, &error_fatal);
QAPI_CLONE_MEMBERS(DisplayOptions, &dpy, opts);
qapi_free_DisplayOptions(opts);
visit_free(v);
}
DisplayOptions *qmp_query_display_options(Error **errp)
{
return QAPI_CLONE(DisplayOptions, &dpy);
}
static void parse_display(const char *p)
{
if (is_help_option(p)) {
qemu_display_help();
exit(0);
}
#ifdef CONFIG_VNC
const char *opts;
if (strstart(p, "vnc", &opts)) {
/*
* vnc isn't a (local) DisplayType but a protocol for remote
* display access.
*/
if (*opts == '=') {
vnc_parse(opts + 1);
display_remote++;
} else {
error_report("VNC requires a display argument vnc=<display>");
exit(1);
}
return;
}
#endif
parse_display_qapi(p);
}
static inline bool nonempty_str(const char *str)
{
return str && *str;
}
static int parse_fw_cfg(void *opaque, QemuOpts *opts, Error **errp)
{
gchar *buf;
size_t size;
const char *name, *file, *str, *gen_id;
FWCfgState *fw_cfg = (FWCfgState *) opaque;
if (fw_cfg == NULL) {
error_setg(errp, "fw_cfg device not available");
return -1;
}
name = qemu_opt_get(opts, "name");
file = qemu_opt_get(opts, "file");
str = qemu_opt_get(opts, "string");
gen_id = qemu_opt_get(opts, "gen_id");
/* we need the name, and exactly one of: file, content string, gen_id */
if (!nonempty_str(name) ||
nonempty_str(file) + nonempty_str(str) + nonempty_str(gen_id) != 1) {
error_setg(errp, "name, plus exactly one of file,"
" string and gen_id, are needed");
return -1;
}
if (strlen(name) > FW_CFG_MAX_FILE_PATH - 1) {
error_setg(errp, "name too long (max. %d char)",
FW_CFG_MAX_FILE_PATH - 1);
return -1;
}
if (nonempty_str(gen_id)) {
/*
* In this particular case where the content is populated
* internally, the "etc/" namespace protection is relaxed,
* so do not emit a warning.
*/
} else if (strncmp(name, "opt/", 4) != 0) {
warn_report("externally provided fw_cfg item names "
"should be prefixed with \"opt/\"");
}
if (nonempty_str(str)) {
size = strlen(str); /* NUL terminator NOT included in fw_cfg blob */
buf = g_memdup(str, size);
} else if (nonempty_str(gen_id)) {
if (!fw_cfg_add_file_from_generator(fw_cfg, object_get_objects_root(),
gen_id, name, errp)) {
return -1;
}
return 0;
} else {
GError *err = NULL;
if (!g_file_get_contents(file, &buf, &size, &err)) {
error_setg(errp, "can't load %s: %s", file, err->message);
g_error_free(err);
return -1;
}
}
fw_cfg_add_file(fw_cfg, name, buf, size);
return 0;
}
static int device_help_func(void *opaque, QemuOpts *opts, Error **errp)
{
return qdev_device_help(opts);
}
static int device_init_func(void *opaque, QemuOpts *opts, Error **errp)
{
DeviceState *dev;
dev = qdev_device_add(opts, errp);
if (!dev && *errp) {
error_report_err(*errp);
return -1;
} else if (dev) {
object_unref(OBJECT(dev));
}
return 0;
}
static int chardev_init_func(void *opaque, QemuOpts *opts, Error **errp)
{
Error *local_err = NULL;
if (!qemu_chr_new_from_opts(opts, NULL, &local_err)) {
if (local_err) {
error_propagate(errp, local_err);
return -1;
}
exit(0);
}
return 0;
}
#ifdef CONFIG_VIRTFS
static int fsdev_init_func(void *opaque, QemuOpts *opts, Error **errp)
{
return qemu_fsdev_add(opts, errp);
}
#endif
static int mon_init_func(void *opaque, QemuOpts *opts, Error **errp)
{
return monitor_init_opts(opts, errp);
}
static void monitor_parse(const char *str, const char *mode, bool pretty)
{
static int monitor_device_index = 0;
QemuOpts *opts;
const char *p;
char label[32];
if (strstart(str, "chardev:", &p)) {
snprintf(label, sizeof(label), "%s", p);
} else {
snprintf(label, sizeof(label), "compat_monitor%d",
monitor_device_index);
opts = qemu_chr_parse_compat(label, str, true);
if (!opts) {
error_report("parse error: %s", str);
exit(1);
}
}
opts = qemu_opts_create(qemu_find_opts("mon"), label, 1, &error_fatal);
qemu_opt_set(opts, "mode", mode, &error_abort);
qemu_opt_set(opts, "chardev", label, &error_abort);
if (!strcmp(mode, "control")) {
qemu_opt_set_bool(opts, "pretty", pretty, &error_abort);
} else {
assert(pretty == false);
}
monitor_device_index++;
}
struct device_config {
enum {
DEV_USB, /* -usbdevice */
DEV_SERIAL, /* -serial */
DEV_PARALLEL, /* -parallel */
DEV_DEBUGCON, /* -debugcon */
DEV_GDB, /* -gdb, -s */
DEV_SCLP, /* s390 sclp */
} type;
const char *cmdline;
Location loc;
QTAILQ_ENTRY(device_config) next;
};
static QTAILQ_HEAD(, device_config) device_configs =
QTAILQ_HEAD_INITIALIZER(device_configs);
static void add_device_config(int type, const char *cmdline)
{
struct device_config *conf;
conf = g_malloc0(sizeof(*conf));
conf->type = type;
conf->cmdline = cmdline;
loc_save(&conf->loc);
QTAILQ_INSERT_TAIL(&device_configs, conf, next);
}
/**
* foreach_device_config_or_exit(): process per-device configs
* @type: device_config type
* @func: device specific config function, returning pass/fail
*
* @func is called with the &error_fatal handler so device specific
* error messages can be reported on failure.
*/
static void foreach_device_config_or_exit(int type,
bool (*func)(const char *cmdline,
Error **errp))
{
struct device_config *conf;
QTAILQ_FOREACH(conf, &device_configs, next) {
if (conf->type != type)
continue;
loc_push_restore(&conf->loc);
func(conf->cmdline, &error_fatal);
loc_pop(&conf->loc);
}
}
static void qemu_disable_default_devices(void)
{
MachineClass *machine_class = MACHINE_GET_CLASS(current_machine);
default_driver_check_json();
qemu_opts_foreach(qemu_find_opts("device"),
default_driver_check, NULL, NULL);
qemu_opts_foreach(qemu_find_opts("global"),
default_driver_check, NULL, NULL);
if (!vga_model && !default_vga) {
vga_interface_type = VGA_DEVICE;
vga_interface_created = true;
}
if (!has_defaults || machine_class->no_serial) {
default_serial = 0;
}
if (!has_defaults || machine_class->no_parallel) {
default_parallel = 0;
}
if (!has_defaults || machine_class->no_floppy) {
default_floppy = 0;
}
if (!has_defaults || machine_class->no_cdrom) {
default_cdrom = 0;
}
if (!has_defaults || !machine_class->auto_create_sdcard) {
auto_create_sdcard = false;
}
if (!has_defaults) {
default_audio = 0;
default_monitor = 0;
default_net = 0;
default_vga = 0;
} else {
if (default_net && machine_class->default_nic &&
!module_object_class_by_name(machine_class->default_nic)) {
warn_report("Default NIC '%s' is not available in this binary",
machine_class->default_nic);
default_net = 0;
}
}
}
static void qemu_setup_display(void)
{
if (dpy.type == DISPLAY_TYPE_DEFAULT && !display_remote) {
if (!qemu_display_find_default(&dpy)) {
dpy.type = DISPLAY_TYPE_NONE;
#if defined(CONFIG_VNC)
vnc_parse("localhost:0,to=99,id=default");
display_remote++;
#endif
}
}
if (dpy.type == DISPLAY_TYPE_DEFAULT) {
dpy.type = DISPLAY_TYPE_NONE;
}
qemu_display_early_init(&dpy);
}
static void qemu_create_default_devices(void)
{
MachineClass *machine_class = MACHINE_GET_CLASS(current_machine);
const char *vc = qemu_display_get_vc(&dpy);
if (is_daemonized()) {
/* According to documentation and historically, -nographic redirects
* serial port, parallel port and monitor to stdio, which does not work
* with -daemonize. We can redirect these to null instead, but since
* -nographic is legacy, let's just error out.
* We disallow -nographic only if all other ports are not redirected
* explicitly, to not break existing legacy setups which uses
* -nographic _and_ redirects all ports explicitly - this is valid
* usage, -nographic is just a no-op in this case.
*/
if (nographic
&& (default_parallel || default_serial || default_monitor)) {
error_report("-nographic cannot be used with -daemonize");
exit(1);
}
}
if (nographic) {
if (default_parallel) {
add_device_config(DEV_PARALLEL, "null");
}
if (default_serial && default_monitor) {
add_device_config(DEV_SERIAL, "mon:stdio");
} else {
if (default_serial) {
add_device_config(DEV_SERIAL, "stdio");
}
if (default_monitor) {
monitor_parse("stdio", "readline", false);
}
}
} else {
if (default_serial) {
add_device_config(DEV_SERIAL, vc ?: "null");
}
if (default_parallel) {
add_device_config(DEV_PARALLEL, vc ?: "null");
}
if (default_monitor && vc) {
monitor_parse(vc, "readline", false);
}
}
if (default_net) {
QemuOptsList *net = qemu_find_opts("net");
qemu_opts_parse(net, "nic", true, &error_abort);
#ifdef CONFIG_SLIRP
qemu_opts_parse(net, "user", true, &error_abort);
#endif
}
/* If no default VGA is requested, the default is "none". */
if (default_vga) {
vga_model = get_default_vga_model(machine_class);
}
if (vga_model) {
select_vgahw(machine_class, vga_model);
}
}
static bool serial_parse(const char *devname, Error **errp)
{
int index = num_serial_hds;
serial_hds = g_renew(Chardev *, serial_hds, index + 1);
if (strcmp(devname, "none") == 0) {
/* Don't allocate a serial device for this index */
serial_hds[index] = NULL;
} else {
char label[32];
snprintf(label, sizeof(label), "serial%d", index);
serial_hds[index] = qemu_chr_new_mux_mon(label, devname, NULL);
if (!serial_hds[index]) {
error_setg(errp, "could not connect serial device"
" to character backend '%s'", devname);
return false;
}
}
num_serial_hds++;
return true;
}
Chardev *serial_hd(int i)
{
assert(i >= 0);
if (i < num_serial_hds) {
return serial_hds[i];
}
return NULL;
}
static bool parallel_parse(const char *devname, Error **errp)
{
static int index = 0;
char label[32];
if (strcmp(devname, "none") == 0)
return true;
if (index == MAX_PARALLEL_PORTS) {
error_setg(errp, "too many parallel ports");
return false;
}
snprintf(label, sizeof(label), "parallel%d", index);
parallel_hds[index] = qemu_chr_new_mux_mon(label, devname, NULL);
if (!parallel_hds[index]) {
error_setg(errp, "could not connect parallel device"
" to character backend '%s'", devname);
return false;
}
index++;
return true;
}
static bool debugcon_parse(const char *devname, Error **errp)
{
QemuOpts *opts;
if (!qemu_chr_new_mux_mon("debugcon", devname, NULL)) {
error_setg(errp, "invalid character backend '%s'", devname);
return false;
}
opts = qemu_opts_create(qemu_find_opts("device"), "debugcon", 1, NULL);
if (!opts) {
error_setg(errp, "already have a debugcon device");
return false;
}
qemu_opt_set(opts, "driver", "isa-debugcon", &error_abort);
qemu_opt_set(opts, "chardev", "debugcon", &error_abort);
return true;
}
static gint machine_class_cmp(gconstpointer a, gconstpointer b, gpointer d)
{
const MachineClass *mc1 = a, *mc2 = b;
int res;
if (mc1->family == NULL) {
if (mc2->family == NULL) {
/* Compare standalone machine types against each other; they sort
* in increasing order.
*/
return strcmp(object_class_get_name(OBJECT_CLASS(mc1)),
object_class_get_name(OBJECT_CLASS(mc2)));
}
/* Standalone machine types sort after families. */
return 1;
}
if (mc2->family == NULL) {
/* Families sort before standalone machine types. */
return -1;
}
/* Families sort between each other alphabetically increasingly. */
res = strcmp(mc1->family, mc2->family);
if (res != 0) {
return res;
}
/* Within the same family, machine types sort in decreasing order. */
return strcmp(object_class_get_name(OBJECT_CLASS(mc2)),
object_class_get_name(OBJECT_CLASS(mc1)));
}
static void machine_help_func(const QDict *qdict)
{
g_autoptr(GSList) machines = NULL;
GSList *el;
const char *type = qdict_get_try_str(qdict, "type");
machines = object_class_get_list(target_machine_typename(), false);
if (type) {
ObjectClass *machine_class = OBJECT_CLASS(find_machine(type, machines));
if (machine_class) {
type_print_class_properties(object_class_get_name(machine_class));
return;
}
}
printf("Supported machines are:\n");
machines = g_slist_sort_with_data(machines, machine_class_cmp, NULL);
for (el = machines; el; el = el->next) {
MachineClass *mc = el->data;
if (mc->alias) {
printf("%-20s %s (alias of %s)\n", mc->alias, mc->desc, mc->name);
}
printf("%-20s %s%s%s\n", mc->name, mc->desc,
mc->is_default ? " (default)" : "",
mc->deprecation_reason ? " (deprecated)" : "");
}
}
static void
machine_merge_property(const char *propname, QDict *prop, Error **errp)
{
QDict *opts;
opts = qdict_new();
/* Preserve the caller's reference to prop. */
qobject_ref(prop);
qdict_put(opts, propname, prop);
keyval_merge(machine_opts_dict, opts, errp);
qobject_unref(opts);
}
static void
machine_parse_property_opt(QemuOptsList *opts_list, const char *propname,
const char *arg)
{
QDict *prop = NULL;
bool help = false;
prop = keyval_parse(arg, opts_list->implied_opt_name, &help, &error_fatal);
if (help) {
qemu_opts_print_help(opts_list, true);
exit(0);
}
machine_merge_property(propname, prop, &error_fatal);
qobject_unref(prop);
}
static const char *pid_file;
struct UnlinkPidfileNotifier {
Notifier notifier;
char *pid_file_realpath;
};
static struct UnlinkPidfileNotifier qemu_unlink_pidfile_notifier;
static void qemu_unlink_pidfile(Notifier *n, void *data)
{
struct UnlinkPidfileNotifier *upn;
upn = DO_UPCAST(struct UnlinkPidfileNotifier, notifier, n);
unlink(upn->pid_file_realpath);
}
static const QEMUOption *lookup_opt(int argc, char **argv,
const char **poptarg, int *poptind)
{
const QEMUOption *popt;
int optind = *poptind;
char *r = argv[optind];
const char *optarg;
loc_set_cmdline(argv, optind, 1);
optind++;
/* Treat --foo the same as -foo. */
if (r[1] == '-')
r++;
popt = qemu_options;
for(;;) {
if (!popt->name) {
error_report("invalid option");
exit(1);
}
if (!strcmp(popt->name, r + 1))
break;
popt++;
}
if (popt->flags & HAS_ARG) {
if (optind >= argc) {
error_report("requires an argument");
exit(1);
}
optarg = argv[optind++];
loc_set_cmdline(argv, optind - 2, 2);
} else {
optarg = NULL;
}
*poptarg = optarg;
*poptind = optind;
return popt;
}
static MachineClass *select_machine(QDict *qdict, Error **errp)
{
ERRP_GUARD();
const char *machine_type = qdict_get_try_str(qdict, "type");
g_autoptr(GSList) machines = object_class_get_list(TYPE_MACHINE, false);
MachineClass *machine_class = NULL;
if (machine_type) {
machine_class = find_machine(machine_type, machines);
if (!machine_class) {
error_setg(errp, "unsupported machine type: \"%s\"", machine_type);
}
qdict_del(qdict, "type");
} else {
machine_class = find_default_machine(machines);
if (!machine_class) {
error_setg(errp, "No machine specified, and there is no default");
}
}
if (!machine_class) {
error_append_hint(errp,
"Use -machine help to list supported machines\n");
}
return machine_class;
}
static int object_parse_property_opt(Object *obj,
const char *name, const char *value,
const char *skip, Error **errp)
{
if (g_str_equal(name, skip)) {
return 0;
}
if (!object_property_parse(obj, name, value, errp)) {
return -1;
}
return 0;
}
/* *Non*recursively replace underscores with dashes in QDict keys. */
static void keyval_dashify(QDict *qdict, Error **errp)
{
const QDictEntry *ent, *next;
char *p;
for (ent = qdict_first(qdict); ent; ent = next) {
g_autofree char *new_key = NULL;
next = qdict_next(qdict, ent);
if (!strchr(ent->key, '_')) {
continue;
}
new_key = g_strdup(ent->key);
for (p = new_key; *p; p++) {
if (*p == '_') {
*p = '-';
}
}
if (qdict_haskey(qdict, new_key)) {
error_setg(errp, "Conflict between '%s' and '%s'", ent->key, new_key);
return;
}
qobject_ref(ent->value);
qdict_put_obj(qdict, new_key, ent->value);
qdict_del(qdict, ent->key);
}
}
static void qemu_apply_legacy_machine_options(QDict *qdict)
{
const char *value;
QObject *prop;
keyval_dashify(qdict, &error_fatal);
/* Legacy options do not correspond to MachineState properties. */
value = qdict_get_try_str(qdict, "accel");
if (value) {
accelerators = g_strdup(value);
qdict_del(qdict, "accel");
}
value = qdict_get_try_str(qdict, "igd-passthru");
if (value) {
object_register_sugar_prop(ACCEL_CLASS_NAME("xen"), "igd-passthru", value,
false);
qdict_del(qdict, "igd-passthru");
}
value = qdict_get_try_str(qdict, "kvm-shadow-mem");
if (value) {
object_register_sugar_prop(ACCEL_CLASS_NAME("kvm"), "kvm-shadow-mem", value,
false);
qdict_del(qdict, "kvm-shadow-mem");
}
value = qdict_get_try_str(qdict, "kernel-irqchip");
if (value) {
object_register_sugar_prop(ACCEL_CLASS_NAME("kvm"), "kernel-irqchip", value,
false);
object_register_sugar_prop(ACCEL_CLASS_NAME("whpx"), "kernel-irqchip", value,
false);
qdict_del(qdict, "kernel-irqchip");
}
value = qdict_get_try_str(qdict, "memory-backend");
if (value) {
if (mem_path) {
error_report("'-mem-path' can't be used together with"
"'-machine memory-backend'");
exit(EXIT_FAILURE);
}
/* Resolved later. */
ram_memdev_id = g_strdup(value);
qdict_del(qdict, "memory-backend");
}
prop = qdict_get(qdict, "memory");
if (prop) {
have_custom_ram_size =
qobject_type(prop) == QTYPE_QDICT &&
qdict_haskey(qobject_to(QDict, prop), "size");
}
}
static void object_option_foreach_add(bool (*type_opt_predicate)(const char *))
{
ObjectOption *opt, *next;
QTAILQ_FOREACH_SAFE(opt, &object_opts, next, next) {
const char *type = ObjectType_str(opt->opts->qom_type);
if (type_opt_predicate(type)) {
user_creatable_add_qapi(opt->opts, &error_fatal);
qapi_free_ObjectOptions(opt->opts);
QTAILQ_REMOVE(&object_opts, opt, next);
g_free(opt);
}
}
}
static void object_option_add_visitor(Visitor *v)
{
ObjectOption *opt = g_new0(ObjectOption, 1);
visit_type_ObjectOptions(v, NULL, &opt->opts, &error_fatal);
QTAILQ_INSERT_TAIL(&object_opts, opt, next);
}
static void incoming_option_parse(const char *str)
{
MigrationChannelType type = MIGRATION_CHANNEL_TYPE_MAIN;
MigrationChannel *channel;
Visitor *v;
if (!strcmp(str, "defer")) {
channel = NULL;
} else if (migrate_is_uri(str)) {
migrate_uri_parse(str, &channel, &error_fatal);
} else {
v = qobject_input_visitor_new_str(str, "channel-type", &error_fatal);
visit_type_MigrationChannel(v, NULL, &channel, &error_fatal);
visit_free(v);
type = channel->channel_type;
}
/* New incoming spec replaces the previous */
qapi_free_MigrationChannel(incoming_channels[type]);
incoming_channels[type] = channel;
incoming_str[type] = str;
incoming = incoming_str[MIGRATION_CHANNEL_TYPE_MAIN];
}
static void object_option_parse(const char *str)
{
QemuOpts *opts;
const char *type;
Visitor *v;
if (str[0] == '{') {
QObject *obj = qobject_from_json(str, &error_fatal);
v = qobject_input_visitor_new(obj);
qobject_unref(obj);
} else {
opts = qemu_opts_parse_noisily(qemu_find_opts("object"),
str, true);
if (!opts) {
exit(1);
}
type = qemu_opt_get(opts, "qom-type");
if (!type) {
error_report(QERR_MISSING_PARAMETER, "qom-type");
exit(1);
}
if (user_creatable_print_help(type, opts)) {
exit(0);
}
v = opts_visitor_new(opts);
}
object_option_add_visitor(v);
visit_free(v);
}
static void overcommit_parse(const char *str)
{
QemuOpts *opts;
const char *mem_lock_opt;
opts = qemu_opts_parse_noisily(qemu_find_opts("overcommit"),
str, false);
if (!opts) {
exit(1);
}
enable_cpu_pm = qemu_opt_get_bool(opts, "cpu-pm", enable_cpu_pm);
mem_lock_opt = qemu_opt_get(opts, "mem-lock");
if (!mem_lock_opt) {
return;
}
if (strcmp(mem_lock_opt, "on") == 0) {
mlock_state = MLOCK_ON;
return;
}
if (strcmp(mem_lock_opt, "off") == 0) {
mlock_state = MLOCK_OFF;
return;
}
if (strcmp(mem_lock_opt, "on-fault") == 0) {
mlock_state = MLOCK_ON_FAULT;
return;
}
error_report("parameter 'mem-lock' expects one of "
"'on', 'off', 'on-fault'");
exit(1);
}
/*
* Very early object creation, before the sandbox options have been activated.
*/
static bool object_create_pre_sandbox(const char *type)
{
/*
* Objects should in general not get initialized "too early" without
* a reason. If you add one, state the reason in a comment!
*/
/*
* Reason: -sandbox on,resourcecontrol=deny disallows setting CPU
* affinity of threads.
*/
if (g_str_equal(type, "thread-context")) {
return true;
}
return false;
}
/*
* Initial object creation happens before all other
* QEMU data types are created. The majority of objects
* can be created at this point. The rng-egd object
* cannot be created here, as it depends on the chardev
* already existing.
*/
static bool object_create_early(const char *type)
{
/*
* Objects should not be made "delayed" without a reason. If you
* add one, state the reason in a comment!
*/
/* Reason: already created. */
if (object_create_pre_sandbox(type)) {
return false;
}
/* Reason: property "chardev" */
if (g_str_equal(type, "rng-egd") ||
g_str_equal(type, "qtest")) {
return false;
}
#if defined(CONFIG_VHOST_USER) && defined(CONFIG_LINUX)
/* Reason: cryptodev-vhost-user property "chardev" */
if (g_str_equal(type, "cryptodev-vhost-user")) {
return false;
}
#endif
/* Reason: vhost-user-blk-server property "node-name" */
if (g_str_equal(type, "vhost-user-blk-server")) {
return false;
}
/*
* Reason: filter-* property "netdev" etc.
*/
if (g_str_equal(type, "filter-buffer") ||
g_str_equal(type, "filter-dump") ||
g_str_equal(type, "filter-mirror") ||
g_str_equal(type, "filter-redirector") ||
g_str_equal(type, "colo-compare") ||
g_str_equal(type, "filter-rewriter") ||
g_str_equal(type, "filter-replay")) {
return false;
}
/*
* Allocation of large amounts of memory may delay
* chardev initialization for too long, and trigger timeouts
* on software that waits for a monitor socket to be created
*/
if (g_str_has_prefix(type, "memory-backend-")) {
return false;
}
return true;
}
static void qemu_apply_machine_options(QDict *qdict)
{
object_set_properties_from_keyval(OBJECT(current_machine), qdict, false, &error_fatal);
if (semihosting_enabled(false) && !semihosting_get_argc()) {
/* fall back to the -kernel/-append */
semihosting_arg_fallback(current_machine->kernel_filename, current_machine->kernel_cmdline);
}
if (current_machine->smp.cpus > 1) {
replay_add_blocker("multiple CPUs");
}
}
static void qemu_create_early_backends(void)
{
MachineClass *machine_class = MACHINE_GET_CLASS(current_machine);
#if defined(CONFIG_SDL)
const bool use_sdl = (dpy.type == DISPLAY_TYPE_SDL);
#else
const bool use_sdl = false;
#endif
#if defined(CONFIG_GTK)
const bool use_gtk = (dpy.type == DISPLAY_TYPE_GTK);
#else
const bool use_gtk = false;
#endif
if (dpy.has_window_close && !use_gtk && !use_sdl) {
error_report("window-close is only valid for GTK and SDL, "
"ignoring option");
}
qemu_console_early_init();
if (dpy.has_gl && dpy.gl != DISPLAY_GL_MODE_OFF && display_opengl == 0) {
#if defined(CONFIG_OPENGL)
error_report("OpenGL is not supported by display backend '%s'",
DisplayType_str(dpy.type));
#else
error_report("OpenGL support was not enabled in this build of QEMU");
#endif
exit(1);
}
object_option_foreach_add(object_create_early);
/* spice needs the timers to be initialized by this point */
/* spice must initialize before audio as it changes the default audiodev */
/* spice must initialize before chardevs (for spicevmc and spiceport) */
qemu_spice.init();
qemu_opts_foreach(qemu_find_opts("chardev"),
chardev_init_func, NULL, &error_fatal);
#ifdef CONFIG_VIRTFS
qemu_opts_foreach(qemu_find_opts("fsdev"),
fsdev_init_func, NULL, &error_fatal);
#endif
/*
* Note: we need to create audio and block backends before
* setting machine properties, so they can be referred to.
*/
configure_blockdev(&bdo_queue, machine_class, snapshot);
audio_init_audiodevs();
if (default_audio) {
audio_create_default_audiodevs();
}
}
/*
* The remainder of object creation happens after the
* creation of chardev, fsdev, net clients and device data types.
*/
static bool object_create_late(const char *type)
{
return !object_create_early(type) && !object_create_pre_sandbox(type);
}
static void qemu_create_late_backends(void)
{
if (qtest_chrdev) {
qtest_server_init(qtest_chrdev, qtest_log, &error_fatal);
}
net_init_clients();
object_option_foreach_add(object_create_late);
/*
* Wait for any outstanding memory prealloc from created memory
* backends to complete.
*/
if (!qemu_finish_async_prealloc_mem(&error_fatal)) {
exit(1);
}
if (tpm_init() < 0) {
exit(1);
}
qemu_opts_foreach(qemu_find_opts("mon"),
mon_init_func, NULL, &error_fatal);
foreach_device_config_or_exit(DEV_SERIAL, serial_parse);
foreach_device_config_or_exit(DEV_PARALLEL, parallel_parse);
foreach_device_config_or_exit(DEV_DEBUGCON, debugcon_parse);
/* now chardevs have been created we may have semihosting to connect */
qemu_semihosting_chardev_init();
}
static void qemu_resolve_machine_memdev(void)
{
if (ram_memdev_id) {
Object *backend;
ram_addr_t backend_size;
backend = object_resolve_path_type(ram_memdev_id,
TYPE_MEMORY_BACKEND, NULL);
if (!backend) {
error_report("Memory backend '%s' not found", ram_memdev_id);
exit(EXIT_FAILURE);
}
if (!have_custom_ram_size) {
backend_size = object_property_get_uint(backend, "size", &error_abort);
current_machine->ram_size = backend_size;
}
object_property_set_link(OBJECT(current_machine),
"memory-backend", backend, &error_fatal);
}
}
static void parse_memory_options(void)
{
QemuOpts *opts = qemu_find_opts_singleton("memory");
QDict *dict, *prop;
const char *mem_str;
Location loc;
loc_push_none(&loc);
qemu_opts_loc_restore(opts);
prop = qdict_new();
if (qemu_opt_get_size(opts, "size", 0) != 0) {
/* Fix up legacy suffix-less format */
mem_str = qemu_opt_get(opts, "size");
if (g_ascii_isdigit(mem_str[strlen(mem_str) - 1])) {
g_autofree char *mib_str = g_strdup_printf("%sM", mem_str);
qdict_put_str(prop, "size", mib_str);
} else {
qdict_put_str(prop, "size", mem_str);
}
}
if (qemu_opt_get(opts, "maxmem")) {
qdict_put_str(prop, "max-size", qemu_opt_get(opts, "maxmem"));
}
if (qemu_opt_get(opts, "slots")) {
qdict_put_str(prop, "slots", qemu_opt_get(opts, "slots"));
}
dict = qdict_new();
qdict_put(dict, "memory", prop);
keyval_merge(machine_opts_dict, dict, &error_fatal);
qobject_unref(dict);
loc_pop(&loc);
}
static void qemu_create_machine_containers(Object *machine)
{
static const char *const containers[] = {
"unattached",
"peripheral",
"peripheral-anon",
};
for (unsigned i = 0; i < ARRAY_SIZE(containers); i++) {
object_property_add_new_container(machine, containers[i]);
}
}
static void qemu_create_machine(QDict *qdict)
{
MachineClass *machine_class = select_machine(qdict, &error_fatal);
object_set_machine_compat_props(machine_class->compat_props);
current_machine = MACHINE(object_new_with_class(OBJECT_CLASS(machine_class)));
object_property_add_child(object_get_root(), "machine",
OBJECT(current_machine));
qemu_create_machine_containers(OBJECT(current_machine));
object_property_add_child(machine_get_container("unattached"),
"sysbus", OBJECT(sysbus_get_default()));
if (machine_class->minimum_page_bits) {
if (!set_preferred_target_page_bits(machine_class->minimum_page_bits)) {
/* This would be a board error: specifying a minimum smaller than
* a target's compile-time fixed setting.
*/
g_assert_not_reached();
}
}
cpu_exec_init_all();
if (machine_class->hw_version) {
qemu_set_hw_version(machine_class->hw_version);
}
/*
* Get the default machine options from the machine if it is not already
* specified either by the configuration file or by the command line.
*/
if (machine_class->default_machine_opts) {
QDict *default_opts =
keyval_parse(machine_class->default_machine_opts, NULL, NULL,
&error_abort);
qemu_apply_legacy_machine_options(default_opts);
object_set_properties_from_keyval(OBJECT(current_machine), default_opts,
false, &error_abort);
qobject_unref(default_opts);
}
}
static int global_init_func(void *opaque, QemuOpts *opts, Error **errp)
{
GlobalProperty *g;
g = g_malloc0(sizeof(*g));
g->driver = qemu_opt_get(opts, "driver");
g->property = qemu_opt_get(opts, "property");
g->value = qemu_opt_get(opts, "value");
qdev_prop_register_global(g);
return 0;
}
/*
* Return whether configuration group @group is stored in QemuOpts, or
* recorded as one or more QDicts by qemu_record_config_group.
*/
static bool is_qemuopts_group(const char *group)
{
if (g_str_equal(group, "object") ||
g_str_equal(group, "audiodev") ||
g_str_equal(group, "machine") ||
g_str_equal(group, "smp-opts") ||
g_str_equal(group, "boot-opts")) {
return false;
}
return true;
}
static void qemu_record_config_group(const char *group, QDict *dict,
bool from_json, Error **errp)
{
if (g_str_equal(group, "object")) {
Visitor *v = qobject_input_visitor_new_keyval(QOBJECT(dict));
object_option_add_visitor(v);
visit_free(v);
} else if (g_str_equal(group, "audiodev")) {
Audiodev *dev = NULL;
Visitor *v = qobject_input_visitor_new_keyval(QOBJECT(dict));
if (visit_type_Audiodev(v, NULL, &dev, errp)) {
audio_define(dev);
}
visit_free(v);
} else if (g_str_equal(group, "machine")) {
/*
* Cannot merge string-valued and type-safe dictionaries, so JSON
* is not accepted yet for -M.
*/
assert(!from_json);
keyval_merge(machine_opts_dict, dict, errp);
} else if (g_str_equal(group, "smp-opts")) {
machine_merge_property("smp", dict, &error_fatal);
} else if (g_str_equal(group, "boot-opts")) {
machine_merge_property("boot", dict, &error_fatal);
} else {
abort();
}
}
/*
* Parse non-QemuOpts config file groups, pass the rest to
* qemu_config_do_parse.
*/
static void qemu_parse_config_group(const char *group, QDict *qdict,
void *opaque, Error **errp)
{
QObject *crumpled;
if (is_qemuopts_group(group)) {
qemu_config_do_parse(group, qdict, opaque, errp);
return;
}
crumpled = qdict_crumple(qdict, errp);
if (!crumpled) {
return;
}
switch (qobject_type(crumpled)) {
case QTYPE_QDICT:
qemu_record_config_group(group, qobject_to(QDict, crumpled), false, errp);
break;
case QTYPE_QLIST:
error_setg(errp, "Lists cannot be at top level of a configuration section");
break;
default:
g_assert_not_reached();
}
qobject_unref(crumpled);
}
static void qemu_read_default_config_file(Error **errp)
{
ERRP_GUARD();
int ret;
g_autofree char *file = get_relocated_path(CONFIG_QEMU_CONFDIR "/qemu.conf");
ret = qemu_read_config_file(file, qemu_parse_config_group, errp);
if (ret < 0) {
if (ret == -ENOENT) {
error_free(*errp);
*errp = NULL;
}
}
}
static void qemu_set_option(const char *str, Error **errp)
{
char group[64], id[64], arg[64];
QemuOptsList *list;
QemuOpts *opts;
int rc, offset;
rc = sscanf(str, "%63[^.].%63[^.].%63[^=]%n", group, id, arg, &offset);
if (rc < 3 || str[offset] != '=') {
error_setg(errp, "can't parse: \"%s\"", str);
return;
}
if (!is_qemuopts_group(group)) {
error_setg(errp, "-set is not supported with %s", group);
} else {
list = qemu_find_opts_err(group, errp);
if (list) {
opts = qemu_opts_find(list, id);
if (!opts) {
error_setg(errp, "there is no %s \"%s\" defined", group, id);
return;
}
qemu_opt_set(opts, arg, str + offset + 1, errp);
}
}
}
static void user_register_global_props(void)
{
qemu_opts_foreach(qemu_find_opts("global"),
global_init_func, NULL, NULL);
}
static int do_configure_icount(void *opaque, QemuOpts *opts, Error **errp)
{
return !icount_configure(opts, errp);
}
static int accelerator_set_property(void *opaque,
const char *name, const char *value,
Error **errp)
{
return object_parse_property_opt(opaque, name, value, "accel", errp);
}
static int do_configure_accelerator(void *opaque, QemuOpts *opts, Error **errp)
{
bool *p_init_failed = opaque;
const char *acc = qemu_opt_get(opts, "accel");
AccelClass *ac = accel_find(acc);
AccelState *accel;
int ret;
bool qtest_with_kvm;
if (!acc) {
error_setg(errp, QERR_MISSING_PARAMETER, "accel");
goto bad;
}
qtest_with_kvm = g_str_equal(acc, "kvm") && qtest_chrdev != NULL;
if (!ac) {
if (!qtest_with_kvm) {
error_report("invalid accelerator %s", acc);
}
goto bad;
}
accel = ACCEL(object_new_with_class(OBJECT_CLASS(ac)));
object_apply_compat_props(OBJECT(accel));
qemu_opt_foreach(opts, accelerator_set_property,
accel,
&error_fatal);
ret = accel_init_machine(accel, current_machine);
if (ret < 0) {
if (!qtest_with_kvm || ret != -ENOENT) {
error_report("failed to initialize %s: %s", acc, strerror(-ret));
}
goto bad;
}
return 1;
bad:
*p_init_failed = true;
return 0;
}
static void configure_accelerators(const char *progname)
{
bool init_failed = false;
qemu_opts_foreach(qemu_find_opts("icount"),
do_configure_icount, NULL, &error_fatal);
if (QTAILQ_EMPTY(&qemu_accel_opts.head)) {
char **accel_list, **tmp;
if (accelerators == NULL) {
/* Select the default accelerator */
bool have_tcg = accel_find("tcg");
bool have_kvm = accel_find("kvm");
bool have_hvf = accel_find("hvf");
if (have_tcg && have_kvm) {
if (g_str_has_suffix(progname, "kvm")) {
/* If the program name ends with "kvm", we prefer KVM */
accelerators = "kvm:tcg";
} else {
accelerators = "tcg:kvm";
}
} else if (have_kvm) {
accelerators = "kvm";
} else if (have_tcg) {
accelerators = "tcg";
} else if (have_hvf) {
accelerators = "hvf";
} else {
error_report("No accelerator selected and"
" no default accelerator available");
exit(1);
}
}
accel_list = g_strsplit(accelerators, ":", 0);
for (tmp = accel_list; *tmp; tmp++) {
/*
* Filter invalid accelerators here, to prevent obscenities
* such as "-machine accel=tcg,,thread=single".
*/
if (accel_find(*tmp)) {
qemu_opts_parse_noisily(qemu_find_opts("accel"), *tmp, true);
} else {
init_failed = true;
error_report("invalid accelerator %s", *tmp);
}
}
g_strfreev(accel_list);
} else {
if (accelerators != NULL) {
error_report("The -accel and \"-machine accel=\" options are incompatible");
exit(1);
}
}
if (!qemu_opts_foreach(qemu_find_opts("accel"),
do_configure_accelerator, &init_failed, &error_fatal)) {
if (!init_failed) {
error_report("no accelerator found");
}
exit(1);
}
if (init_failed && !qtest_chrdev) {
error_report("falling back to %s", current_accel_name());
}
if (icount_enabled() && !tcg_enabled()) {
error_report("-icount is not allowed with hardware virtualization");
exit(1);
}
}
static void qemu_validate_options(const QDict *machine_opts)
{
const char *kernel_filename = qdict_get_try_str(machine_opts, "kernel");
const char *shim_filename = qdict_get_try_str(machine_opts, "shim");
const char *initrd_filename = qdict_get_try_str(machine_opts, "initrd");
const char *kernel_cmdline = qdict_get_try_str(machine_opts, "append");
if (kernel_filename == NULL) {
if (kernel_cmdline != NULL) {
error_report("-append only allowed with -kernel option");
exit(1);
}
if (shim_filename != NULL) {
error_report("-shim only allowed with -kernel option");
exit(1);
}
if (initrd_filename != NULL) {
error_report("-initrd only allowed with -kernel option");
exit(1);
}
}
if (loadvm && incoming) {
error_report("'incoming' and 'loadvm' options are mutually exclusive");
exit(EXIT_FAILURE);
}
if (loadvm && preconfig_requested) {
error_report("'preconfig' and 'loadvm' options are "
"mutually exclusive");
exit(EXIT_FAILURE);
}
if (incoming && preconfig_requested && strcmp(incoming, "defer") != 0) {
error_report("'preconfig' supports '-incoming defer' only");
exit(EXIT_FAILURE);
}
#ifdef CONFIG_CURSES
if (is_daemonized() && dpy.type == DISPLAY_TYPE_CURSES) {
error_report("curses display cannot be used with -daemonize");
exit(1);
}
#endif
}
static void qemu_process_sugar_options(void)
{
if (mem_prealloc) {
QObject *smp = qdict_get(machine_opts_dict, "smp");
if (smp && qobject_type(smp) == QTYPE_QDICT) {
QObject *cpus = qdict_get(qobject_to(QDict, smp), "cpus");
if (cpus && qobject_type(cpus) == QTYPE_QSTRING) {
const char *val = qstring_get_str(qobject_to(QString, cpus));
object_register_sugar_prop("memory-backend", "prealloc-threads",
val, false);
}
}
object_register_sugar_prop("memory-backend", "prealloc", "on", false);
}
}
/* -action processing */
/*
* Process all the -action parameters parsed from cmdline.
*/
static int process_runstate_actions(void *opaque, QemuOpts *opts, Error **errp)
{
Error *local_err = NULL;
QDict *qdict = qemu_opts_to_qdict(opts, NULL);
QObject *ret = NULL;
qmp_marshal_set_action(qdict, &ret, &local_err);
qobject_unref(ret);
qobject_unref(qdict);
if (local_err) {
error_propagate(errp, local_err);
return 1;
}
return 0;
}
static void qemu_process_early_options(void)
{
qemu_opts_foreach(qemu_find_opts("name"),
parse_name, NULL, &error_fatal);
object_option_foreach_add(object_create_pre_sandbox);
#ifdef CONFIG_SECCOMP
QemuOptsList *olist = qemu_find_opts_err("sandbox", NULL);
if (olist) {
qemu_opts_foreach(olist, parse_sandbox, NULL, &error_fatal);
}
#endif
if (qemu_opts_foreach(qemu_find_opts("action"),
process_runstate_actions, NULL, &error_fatal)) {
exit(1);
}
#ifndef _WIN32
qemu_opts_foreach(qemu_find_opts("add-fd"),
parse_add_fd, NULL, &error_fatal);
qemu_opts_foreach(qemu_find_opts("add-fd"),
cleanup_add_fd, NULL, &error_fatal);
#endif
/* Open the logfile at this point and set the log mask if necessary. */
{
int mask = 0;
if (log_mask) {
mask = qemu_str_to_log_mask(log_mask);
if (!mask) {
qemu_print_log_usage(stdout);
exit(1);
}
}
qemu_set_log_filename_flags(log_file, mask, &error_fatal);
}
qemu_add_default_firmwarepath();
}
static void qemu_process_help_options(void)
{
/*
* Check for -cpu help and -device help before we call select_machine(),
* which will return an error if the architecture has no default machine
* type and the user did not specify one, so that the user doesn't need
* to say '-cpu help -machine something'.
*/
if (cpu_option && is_help_option(cpu_option)) {
list_cpus();
exit(0);
}
if (qemu_opts_foreach(qemu_find_opts("device"),
device_help_func, NULL, NULL)) {
exit(0);
}
/* -L help lists the data directories and exits. */
if (list_data_dirs) {
qemu_list_data_dirs();
exit(0);
}
}
static void qemu_maybe_daemonize(const char *pid_file)
{
Error *err = NULL;
os_daemonize();
rcu_disable_atfork();
if (pid_file) {
char *pid_file_realpath = NULL;
if (!qemu_write_pidfile(pid_file, &err)) {
error_reportf_err(err, "cannot create PID file: ");
exit(1);
}
pid_file_realpath = g_malloc0(PATH_MAX);
if (!realpath(pid_file, pid_file_realpath)) {
if (errno != ENOENT) {
warn_report("not removing PID file on exit: cannot resolve PID "
"file path: %s: %s", pid_file, strerror(errno));
}
return;
}
qemu_unlink_pidfile_notifier = (struct UnlinkPidfileNotifier) {
.notifier = {
.notify = qemu_unlink_pidfile,
},
.pid_file_realpath = pid_file_realpath,
};
qemu_add_exit_notifier(&qemu_unlink_pidfile_notifier.notifier);
}
}
static void qemu_init_displays(void)
{
DisplayState *ds;
/* init local displays */
ds = init_displaystate();
qemu_display_init(ds, &dpy);
/* must be after terminal init, SDL library changes signal handlers */
os_setup_signal_handling();
/* init remote displays */
#ifdef CONFIG_VNC
qemu_opts_foreach(qemu_find_opts("vnc"),
vnc_init_func, NULL, &error_fatal);
#endif
if (using_spice) {
qemu_spice.display_init();
}
}
static void qemu_init_board(void)
{
MachineClass *machine_class = MACHINE_GET_CLASS(current_machine);
/* process plugin before CPUs are created, but once -smp has been parsed */
qemu_plugin_load_list(&plugin_list, &error_fatal);
/* From here on we enter MACHINE_PHASE_INITIALIZED. */
machine_run_board_init(current_machine, mem_path, &error_fatal);
if (machine_class->auto_create_sdcard) {
bool ambigous;
/* Ensure there is a SD bus available to create SD card on */
Object *obj = object_resolve_path_type("", TYPE_SD_BUS, &ambigous);
if (!obj && !ambigous) {
fprintf(stderr, "Can not create sd-card on '%s' machine"
" because it lacks a sd-bus\n",
machine_class->name);
abort();
}
}
drive_check_orphaned();
realtime_init();
}
static void qemu_create_cli_devices(void)
{
DeviceOption *opt;
soundhw_init();
qemu_opts_foreach(qemu_find_opts("fw_cfg"),
parse_fw_cfg, fw_cfg_find(), &error_fatal);
/* init USB devices */
if (machine_usb(current_machine)) {
foreach_device_config_or_exit(DEV_USB, usb_parse);
}
/* init generic devices */
qemu_opts_foreach(qemu_find_opts("device"),
device_init_func, NULL, &error_fatal);
QTAILQ_FOREACH(opt, &device_opts, next) {
QObject *ret_data = NULL;
loc_push_restore(&opt->loc);
qmp_device_add(opt->opts, &ret_data, &error_fatal);
assert(ret_data == NULL); /* error_fatal aborts */
loc_pop(&opt->loc);
}
}
static bool qemu_machine_creation_done(Error **errp)
{
MachineState *machine = MACHINE(qdev_get_machine());
/* Did we create any drives that we failed to create a device for? */
drive_check_orphaned();
/* Don't warn about the default network setup that you get if
* no command line -net or -netdev options are specified. There
* are two cases that we would otherwise complain about:
* (1) board doesn't support a NIC but the implicit "-net nic"
* requested one
* (2) CONFIG_SLIRP not set, in which case the implicit "-net nic"
* sets up a nic that isn't connected to anything.
*/
if (!default_net && (!qtest_enabled() || has_defaults)) {
net_check_clients();
}
qdev_prop_check_globals();
qdev_machine_creation_done();
if (machine->cgs && !machine->cgs->ready) {
error_setg(errp, "accelerator does not support confidential guest %s",
object_get_typename(OBJECT(machine->cgs)));
exit(1);
}
foreach_device_config_or_exit(DEV_GDB, gdbserver_start);
if (!vga_interface_created && !default_vga &&
vga_interface_type != VGA_NONE) {
warn_report("A -vga option was passed but this machine "
"type does not use that option; "
"No VGA device has been created");
}
return true;
}
void qmp_x_exit_preconfig(Error **errp)
{
if (phase_check(PHASE_MACHINE_INITIALIZED)) {
error_setg(errp, "The command is permitted only before machine initialization");
return;
}
qemu_init_board();
qemu_create_cli_devices();
if (!qemu_machine_creation_done(errp)) {
return;
}
if (loadvm) {
RunState state = autostart ? RUN_STATE_RUNNING : runstate_get();
load_snapshot(loadvm, NULL, false, NULL, &error_fatal);
load_snapshot_resume(state);
}
if (replay_mode != REPLAY_MODE_NONE) {
replay_vmstate_init();
}
if (incoming) {
Error *local_err = NULL;
if (strcmp(incoming, "defer") != 0) {
g_autofree MigrationChannelList *channels =
g_new0(MigrationChannelList, 1);
channels->value = incoming_channels[MIGRATION_CHANNEL_TYPE_MAIN];
qmp_migrate_incoming(NULL, true, channels, true, true, &local_err);
if (local_err) {
error_reportf_err(local_err, "-incoming %s: ", incoming);
exit(1);
}
}
} else if (autostart) {
qmp_cont(NULL);
}
}
void qemu_init(int argc, char **argv)
{
QemuOpts *opts;
QemuOpts *icount_opts = NULL, *accel_opts = NULL;
QemuOptsList *olist;
int optind;
const char *optarg;
MachineClass *machine_class;
bool userconfig = true;
FILE *vmstate_dump_file = NULL;
qemu_add_opts(&qemu_drive_opts);
qemu_add_drive_opts(&qemu_legacy_drive_opts);
qemu_add_drive_opts(&qemu_common_drive_opts);
qemu_add_drive_opts(&qemu_drive_opts);
qemu_add_drive_opts(&bdrv_runtime_opts);
qemu_add_opts(&qemu_chardev_opts);
qemu_add_opts(&qemu_device_opts);
qemu_add_opts(&qemu_netdev_opts);
qemu_add_opts(&qemu_nic_opts);
qemu_add_opts(&qemu_net_opts);
qemu_add_opts(&qemu_rtc_opts);
qemu_add_opts(&qemu_global_opts);
qemu_add_opts(&qemu_mon_opts);
qemu_add_opts(&qemu_trace_opts);
qemu_plugin_add_opts();
qemu_add_opts(&qemu_option_rom_opts);
qemu_add_opts(&qemu_accel_opts);
qemu_add_opts(&qemu_mem_opts);
qemu_add_opts(&qemu_smp_opts);
qemu_add_opts(&qemu_boot_opts);
qemu_add_opts(&qemu_add_fd_opts);
qemu_add_opts(&qemu_object_opts);
qemu_add_opts(&qemu_tpmdev_opts);
qemu_add_opts(&qemu_overcommit_opts);
qemu_add_opts(&qemu_msg_opts);
qemu_add_opts(&qemu_name_opts);
qemu_add_opts(&qemu_numa_opts);
qemu_add_opts(&qemu_icount_opts);
qemu_add_opts(&qemu_semihosting_config_opts);
qemu_add_opts(&qemu_fw_cfg_opts);
qemu_add_opts(&qemu_action_opts);
qemu_add_run_with_opts();
module_call_init(MODULE_INIT_OPTS);
error_init(argv[0]);
qemu_init_exec_dir(argv[0]);
os_setup_limits();
#ifdef CONFIG_MODULES
module_init_info(qemu_modinfo);
module_allow_arch(target_name());
#endif
qemu_init_subsystems();
/* first pass of option parsing */
optind = 1;
while (optind < argc) {
if (argv[optind][0] != '-') {
/* disk image */
optind++;
} else {
const QEMUOption *popt;
popt = lookup_opt(argc, argv, &optarg, &optind);
switch (popt->index) {
case QEMU_OPTION_nouserconfig:
userconfig = false;
break;
}
}
}
machine_opts_dict = qdict_new();
if (userconfig) {
qemu_read_default_config_file(&error_fatal);
}
/* second pass of option parsing */
optind = 1;
for(;;) {
if (optind >= argc)
break;
if (argv[optind][0] != '-') {
loc_set_cmdline(argv, optind, 1);
drive_add(IF_DEFAULT, 0, argv[optind++], HD_OPTS);
} else {
const QEMUOption *popt;
popt = lookup_opt(argc, argv, &optarg, &optind);
if (!qemu_arch_available(popt->arch_mask)) {
error_report("Option not supported for this target");
exit(1);
}
switch(popt->index) {
case QEMU_OPTION_cpu:
/* hw initialization will check this */
cpu_option = optarg;
break;
case QEMU_OPTION_hda:
case QEMU_OPTION_hdb:
case QEMU_OPTION_hdc:
case QEMU_OPTION_hdd:
drive_add(IF_DEFAULT, popt->index - QEMU_OPTION_hda, optarg,
HD_OPTS);
break;
case QEMU_OPTION_blockdev:
{
Visitor *v;
BlockdevOptionsQueueEntry *bdo;
v = qobject_input_visitor_new_str(optarg, "driver",
&error_fatal);
bdo = g_new(BlockdevOptionsQueueEntry, 1);
visit_type_BlockdevOptions(v, NULL, &bdo->bdo,
&error_fatal);
visit_free(v);
loc_save(&bdo->loc);
QSIMPLEQ_INSERT_TAIL(&bdo_queue, bdo, entry);
break;
}
case QEMU_OPTION_drive:
opts = qemu_opts_parse_noisily(qemu_find_opts("drive"),
optarg, false);
if (opts == NULL) {
exit(1);
}
break;
case QEMU_OPTION_set:
qemu_set_option(optarg, &error_fatal);
break;
case QEMU_OPTION_global:
if (qemu_global_option(optarg) != 0)
exit(1);
break;
case QEMU_OPTION_mtdblock:
drive_add(IF_MTD, -1, optarg, MTD_OPTS);
break;
case QEMU_OPTION_sd:
drive_add(IF_SD, -1, optarg, SD_OPTS);
break;
case QEMU_OPTION_pflash:
drive_add(IF_PFLASH, -1, optarg, PFLASH_OPTS);
break;
case QEMU_OPTION_snapshot:
snapshot = 1;
replay_add_blocker("-snapshot");
break;
case QEMU_OPTION_numa:
opts = qemu_opts_parse_noisily(qemu_find_opts("numa"),
optarg, true);
if (!opts) {
exit(1);
}
break;
case QEMU_OPTION_display:
parse_display(optarg);
break;
case QEMU_OPTION_nographic:
qdict_put_str(machine_opts_dict, "graphics", "off");
nographic = true;
dpy.type = DISPLAY_TYPE_NONE;
break;
case QEMU_OPTION_kernel:
qdict_put_str(machine_opts_dict, "kernel", optarg);
break;
case QEMU_OPTION_shim:
qdict_put_str(machine_opts_dict, "shim", optarg);
break;
case QEMU_OPTION_initrd:
qdict_put_str(machine_opts_dict, "initrd", optarg);
break;
case QEMU_OPTION_append:
qdict_put_str(machine_opts_dict, "append", optarg);
break;
case QEMU_OPTION_dtb:
qdict_put_str(machine_opts_dict, "dtb", optarg);
break;
case QEMU_OPTION_cdrom:
drive_add(IF_DEFAULT, 2, optarg, CDROM_OPTS);
break;
case QEMU_OPTION_boot:
machine_parse_property_opt(qemu_find_opts("boot-opts"), "boot", optarg);
break;
case QEMU_OPTION_fda:
case QEMU_OPTION_fdb:
drive_add(IF_FLOPPY, popt->index - QEMU_OPTION_fda,
optarg, FD_OPTS);
break;
case QEMU_OPTION_no_fd_bootchk:
qdict_put_str(machine_opts_dict, "fd-bootchk", "off");
break;
case QEMU_OPTION_netdev:
default_net = 0;
if (netdev_is_modern(optarg)) {
netdev_parse_modern(optarg);
} else {
net_client_parse(qemu_find_opts("netdev"), optarg);
}
break;
case QEMU_OPTION_nic:
default_net = 0;
net_client_parse(qemu_find_opts("nic"), optarg);
break;
case QEMU_OPTION_net:
default_net = 0;
net_client_parse(qemu_find_opts("net"), optarg);
break;
#ifdef CONFIG_LIBISCSI
case QEMU_OPTION_iscsi:
opts = qemu_opts_parse_noisily(qemu_find_opts("iscsi"),
optarg, false);
if (!opts) {
exit(1);
}
break;
#endif
case QEMU_OPTION_audiodev:
default_audio = 0;
audio_parse_option(optarg);
break;
case QEMU_OPTION_audio: {
bool help;
char *model = NULL;
Audiodev *dev = NULL;
Visitor *v;
QDict *dict = keyval_parse(optarg, "driver", &help, &error_fatal);
default_audio = 0;
if (help || (qdict_haskey(dict, "driver") &&
is_help_option(qdict_get_str(dict, "driver")))) {
audio_help();
exit(EXIT_SUCCESS);
}
if (!qdict_haskey(dict, "id")) {
qdict_put_str(dict, "id", "audiodev0");
}
if (qdict_haskey(dict, "model")) {
model = g_strdup(qdict_get_str(dict, "model"));
qdict_del(dict, "model");
if (is_help_option(model)) {
show_valid_soundhw();
exit(0);
}
}
v = qobject_input_visitor_new_keyval(QOBJECT(dict));
qobject_unref(dict);
visit_type_Audiodev(v, NULL, &dev, &error_fatal);
visit_free(v);
if (model) {
audio_define(dev);
select_soundhw(model, dev->id);
g_free(model);
} else {
audio_define_default(dev, &error_fatal);
}
break;
}
case QEMU_OPTION_h:
help(0);
break;
case QEMU_OPTION_version:
version();
exit(0);
break;
case QEMU_OPTION_m:
opts = qemu_opts_parse_noisily(qemu_find_opts("memory"), optarg, true);
if (opts == NULL) {
exit(1);
}
break;
#ifdef CONFIG_TPM
case QEMU_OPTION_tpmdev:
if (tpm_config_parse(qemu_find_opts("tpmdev"), optarg) < 0) {
exit(1);
}
break;
#endif
case QEMU_OPTION_mempath:
mem_path = optarg;
break;
case QEMU_OPTION_mem_prealloc:
mem_prealloc = 1;
break;
case QEMU_OPTION_d:
log_mask = optarg;
break;
case QEMU_OPTION_D:
log_file = optarg;
break;
case QEMU_OPTION_DFILTER:
qemu_set_dfilter_ranges(optarg, &error_fatal);
break;
#if defined(CONFIG_TCG) && defined(CONFIG_LINUX)
case QEMU_OPTION_perfmap:
perf_enable_perfmap();
break;
case QEMU_OPTION_jitdump:
perf_enable_jitdump();
break;
#endif
case QEMU_OPTION_seed:
qemu_guest_random_seed_main(optarg, &error_fatal);
break;
case QEMU_OPTION_s:
add_device_config(DEV_GDB, "tcp::" DEFAULT_GDBSTUB_PORT);
break;
case QEMU_OPTION_gdb:
add_device_config(DEV_GDB, optarg);
break;
case QEMU_OPTION_L:
if (is_help_option(optarg)) {
list_data_dirs = true;
} else {
qemu_add_data_dir(g_strdup(optarg));
}
break;
case QEMU_OPTION_bios:
qdict_put_str(machine_opts_dict, "firmware", optarg);
break;
case QEMU_OPTION_S:
autostart = 0;
break;
case QEMU_OPTION_k:
keyboard_layout = optarg;
break;
case QEMU_OPTION_vga:
vga_model = optarg;
default_vga = 0;
break;
case QEMU_OPTION_g:
{
const char *p;
int w, h, depth;
p = optarg;
w = strtol(p, (char **)&p, 10);
if (w <= 0) {
graphic_error:
error_report("invalid resolution or depth");
exit(1);
}
if (*p != 'x')
goto graphic_error;
p++;
h = strtol(p, (char **)&p, 10);
if (h <= 0)
goto graphic_error;
if (*p == 'x') {
p++;
depth = strtol(p, (char **)&p, 10);
if (depth != 1 && depth != 2 && depth != 4 &&
depth != 8 && depth != 15 && depth != 16 &&
depth != 24 && depth != 32)
goto graphic_error;
} else if (*p == '\0') {
depth = graphic_depth;
} else {
goto graphic_error;
}
graphic_width = w;
graphic_height = h;
graphic_depth = depth;
}
break;
case QEMU_OPTION_echr:
{
char *r;
term_escape_char = strtol(optarg, &r, 0);
if (r == optarg)
printf("Bad argument to echr\n");
break;
}
case QEMU_OPTION_monitor:
default_monitor = 0;
if (strncmp(optarg, "none", 4)) {
monitor_parse(optarg, "readline", false);
}
break;
case QEMU_OPTION_qmp:
monitor_parse(optarg, "control", false);
default_monitor = 0;
break;
case QEMU_OPTION_qmp_pretty:
monitor_parse(optarg, "control", true);
default_monitor = 0;
break;
case QEMU_OPTION_mon:
opts = qemu_opts_parse_noisily(qemu_find_opts("mon"), optarg,
true);
if (!opts) {
exit(1);
}
default_monitor = 0;
break;
case QEMU_OPTION_chardev:
opts = qemu_opts_parse_noisily(qemu_find_opts("chardev"),
optarg, true);
if (!opts) {
exit(1);
}
break;
case QEMU_OPTION_fsdev:
olist = qemu_find_opts("fsdev");
if (!olist) {
error_report("fsdev support is disabled");
exit(1);
}
opts = qemu_opts_parse_noisily(olist, optarg, true);
if (!opts) {
exit(1);
}
break;
case QEMU_OPTION_virtfs: {
QemuOpts *fsdev;
QemuOpts *device;
const char *writeout, *sock_fd, *socket, *path, *security_model,
*multidevs;
olist = qemu_find_opts("virtfs");
if (!olist) {
error_report("virtfs support is disabled");
exit(1);
}
opts = qemu_opts_parse_noisily(olist, optarg, true);
if (!opts) {
exit(1);
}
if (qemu_opt_get(opts, "fsdriver") == NULL ||
qemu_opt_get(opts, "mount_tag") == NULL) {
error_report("Usage: -virtfs fsdriver,mount_tag=tag");
exit(1);
}
fsdev = qemu_opts_create(qemu_find_opts("fsdev"),
qemu_opts_id(opts) ?:
qemu_opt_get(opts, "mount_tag"),
1, NULL);
if (!fsdev) {
error_report("duplicate or invalid fsdev id: %s",
qemu_opt_get(opts, "mount_tag"));
exit(1);
}
writeout = qemu_opt_get(opts, "writeout");
if (writeout) {
#ifdef CONFIG_SYNC_FILE_RANGE
qemu_opt_set(fsdev, "writeout", writeout, &error_abort);
#else
error_report("writeout=immediate not supported "
"on this platform");
exit(1);
#endif
}
qemu_opt_set(fsdev, "fsdriver",
qemu_opt_get(opts, "fsdriver"), &error_abort);
path = qemu_opt_get(opts, "path");
if (path) {
qemu_opt_set(fsdev, "path", path, &error_abort);
}
security_model = qemu_opt_get(opts, "security_model");
if (security_model) {
qemu_opt_set(fsdev, "security_model", security_model,
&error_abort);
}
socket = qemu_opt_get(opts, "socket");
if (socket) {
qemu_opt_set(fsdev, "socket", socket, &error_abort);
}
sock_fd = qemu_opt_get(opts, "sock_fd");
if (sock_fd) {
qemu_opt_set(fsdev, "sock_fd", sock_fd, &error_abort);
}
qemu_opt_set_bool(fsdev, "readonly",
qemu_opt_get_bool(opts, "readonly", 0),
&error_abort);
multidevs = qemu_opt_get(opts, "multidevs");
if (multidevs) {
qemu_opt_set(fsdev, "multidevs", multidevs, &error_abort);
}
device = qemu_opts_create(qemu_find_opts("device"), NULL, 0,
&error_abort);
qemu_opt_set(device, "driver", "virtio-9p-pci", &error_abort);
qemu_opt_set(device, "fsdev",
qemu_opts_id(fsdev), &error_abort);
qemu_opt_set(device, "mount_tag",
qemu_opt_get(opts, "mount_tag"), &error_abort);
break;
}
case QEMU_OPTION_serial:
add_device_config(DEV_SERIAL, optarg);
default_serial = 0;
if (strncmp(optarg, "mon:", 4) == 0) {
default_monitor = 0;
}
break;
case QEMU_OPTION_action:
olist = qemu_find_opts("action");
if (!qemu_opts_parse_noisily(olist, optarg, false)) {
exit(1);
}
break;
case QEMU_OPTION_watchdog_action: {
opts = qemu_opts_create(qemu_find_opts("action"), NULL, 0, &error_abort);
qemu_opt_set(opts, "watchdog", optarg, &error_abort);
break;
}
case QEMU_OPTION_parallel:
add_device_config(DEV_PARALLEL, optarg);
default_parallel = 0;
if (strncmp(optarg, "mon:", 4) == 0) {
default_monitor = 0;
}
break;
case QEMU_OPTION_debugcon:
add_device_config(DEV_DEBUGCON, optarg);
break;
case QEMU_OPTION_loadvm:
loadvm = optarg;
break;
case QEMU_OPTION_full_screen:
dpy.has_full_screen = true;
dpy.full_screen = true;
break;
case QEMU_OPTION_pidfile:
pid_file = optarg;
break;
case QEMU_OPTION_win2k_hack:
object_register_sugar_prop("ide-device", "win2k-install-hack", "true", true);
break;
case QEMU_OPTION_acpitable:
opts = qemu_opts_parse_noisily(qemu_find_opts("acpi"),
optarg, true);
if (!opts) {
exit(1);
}
acpi_table_add(opts, &error_fatal);
break;
case QEMU_OPTION_smbios:
opts = qemu_opts_parse_noisily(qemu_find_opts("smbios"),
optarg, false);
if (!opts) {
exit(1);
}
smbios_entry_add(opts, &error_fatal);
break;
case QEMU_OPTION_fwcfg:
opts = qemu_opts_parse_noisily(qemu_find_opts("fw_cfg"),
optarg, true);
if (opts == NULL) {
exit(1);
}
break;
case QEMU_OPTION_preconfig:
preconfig_requested = true;
break;
case QEMU_OPTION_enable_kvm:
qdict_put_str(machine_opts_dict, "accel", "kvm");
break;
case QEMU_OPTION_M:
case QEMU_OPTION_machine:
{
bool help;
keyval_parse_into(machine_opts_dict, optarg, "type", &help, &error_fatal);
if (help) {
machine_help_func(machine_opts_dict);
exit(EXIT_SUCCESS);
}
break;
}
case QEMU_OPTION_accel:
accel_opts = qemu_opts_parse_noisily(qemu_find_opts("accel"),
optarg, true);
optarg = qemu_opt_get(accel_opts, "accel");
if (!optarg || is_help_option(optarg)) {
printf("Accelerators supported in QEMU binary:\n");
GSList *el, *accel_list = object_class_get_list(TYPE_ACCEL,
false);
for (el = accel_list; el; el = el->next) {
gchar *typename = g_strdup(object_class_get_name(
OBJECT_CLASS(el->data)));
/* omit qtest which is used for tests only */
if (g_strcmp0(typename, ACCEL_CLASS_NAME("qtest")) &&
g_str_has_suffix(typename, ACCEL_CLASS_SUFFIX)) {
gchar **optname = g_strsplit(typename,
ACCEL_CLASS_SUFFIX, 0);
printf("%s\n", optname[0]);
g_strfreev(optname);
}
g_free(typename);
}
g_slist_free(accel_list);
exit(0);
}
break;
case QEMU_OPTION_usb:
qdict_put_str(machine_opts_dict, "usb", "on");
break;
case QEMU_OPTION_usbdevice:
qdict_put_str(machine_opts_dict, "usb", "on");
add_device_config(DEV_USB, optarg);
break;
case QEMU_OPTION_device:
if (optarg[0] == '{') {
QObject *obj = qobject_from_json(optarg, &error_fatal);
DeviceOption *opt = g_new0(DeviceOption, 1);
opt->opts = qobject_to(QDict, obj);
loc_save(&opt->loc);
assert(opt->opts != NULL);
QTAILQ_INSERT_TAIL(&device_opts, opt, next);
} else {
if (!qemu_opts_parse_noisily(qemu_find_opts("device"),
optarg, true)) {
exit(1);
}
}
break;
case QEMU_OPTION_smp:
machine_parse_property_opt(qemu_find_opts("smp-opts"),
"smp", optarg);
break;
#ifdef CONFIG_VNC
case QEMU_OPTION_vnc:
vnc_parse(optarg);
display_remote++;
break;
#endif
case QEMU_OPTION_no_reboot:
olist = qemu_find_opts("action");
qemu_opts_parse_noisily(olist, "reboot=shutdown", false);
break;
case QEMU_OPTION_no_shutdown:
olist = qemu_find_opts("action");
qemu_opts_parse_noisily(olist, "shutdown=pause", false);
break;
case QEMU_OPTION_uuid:
if (qemu_uuid_parse(optarg, &qemu_uuid) < 0) {
error_report("failed to parse UUID string: wrong format");
exit(1);
}
qemu_uuid_set = true;
break;
case QEMU_OPTION_option_rom:
if (nb_option_roms >= MAX_OPTION_ROMS) {
error_report("too many option ROMs");
exit(1);
}
opts = qemu_opts_parse_noisily(qemu_find_opts("option-rom"),
optarg, true);
if (!opts) {
exit(1);
}
option_rom[nb_option_roms].name = qemu_opt_get(opts, "romfile");
option_rom[nb_option_roms].bootindex =
qemu_opt_get_number(opts, "bootindex", -1);
if (!option_rom[nb_option_roms].name) {
error_report("Option ROM file is not specified");
exit(1);
}
nb_option_roms++;
break;
case QEMU_OPTION_semihosting:
qemu_semihosting_enable();
break;
case QEMU_OPTION_semihosting_config:
if (qemu_semihosting_config_options(optarg) != 0) {
exit(1);
}
break;
case QEMU_OPTION_name:
opts = qemu_opts_parse_noisily(qemu_find_opts("name"),
optarg, true);
if (!opts) {
exit(1);
}
/* Capture guest name if -msg guest-name is used later */
error_guest_name = qemu_opt_get(opts, "guest");
break;
case QEMU_OPTION_prom_env:
if (nb_prom_envs >= MAX_PROM_ENVS) {
error_report("too many prom variables");
exit(1);
}
prom_envs[nb_prom_envs] = optarg;
nb_prom_envs++;
break;
case QEMU_OPTION_old_param:
warn_report("-old-param is deprecated");
old_param = 1;
break;
case QEMU_OPTION_rtc:
opts = qemu_opts_parse_noisily(qemu_find_opts("rtc"), optarg,
false);
if (!opts) {
exit(1);
}
break;
case QEMU_OPTION_icount:
icount_opts = qemu_opts_parse_noisily(qemu_find_opts("icount"),
optarg, true);
if (!icount_opts) {
exit(1);
}
break;
case QEMU_OPTION_incoming:
if (!incoming) {
runstate_set(RUN_STATE_INMIGRATE);
}
incoming_option_parse(optarg);
break;
case QEMU_OPTION_only_migratable:
only_migratable = 1;
break;
case QEMU_OPTION_nodefaults:
has_defaults = 0;
break;
case QEMU_OPTION_xen_domid:
if (!(accel_find("xen")) && !(accel_find("kvm"))) {
error_report("Option not supported for this target");
exit(1);
}
xen_domid = atoi(optarg);
break;
case QEMU_OPTION_xen_attach:
if (!(accel_find("xen"))) {
error_report("Option not supported for this target");
exit(1);
}
xen_mode = XEN_ATTACH;
break;
case QEMU_OPTION_xen_domid_restrict:
if (!(accel_find("xen"))) {
error_report("Option not supported for this target");
exit(1);
}
xen_domid_restrict = true;
break;
case QEMU_OPTION_trace:
trace_opt_parse(optarg);
break;
case QEMU_OPTION_plugin:
qemu_plugin_opt_parse(optarg, &plugin_list);
break;
case QEMU_OPTION_readconfig:
qemu_read_config_file(optarg, qemu_parse_config_group, &error_fatal);
break;
#ifdef CONFIG_SPICE
case QEMU_OPTION_spice:
opts = qemu_opts_parse_noisily(qemu_find_opts("spice"), optarg, false);
if (!opts) {
exit(1);
}
display_remote++;
break;
#endif
case QEMU_OPTION_qtest:
qtest_chrdev = optarg;
break;
case QEMU_OPTION_qtest_log:
qtest_log = optarg;
break;
case QEMU_OPTION_sandbox:
olist = qemu_find_opts("sandbox");
if (!olist) {
#ifndef CONFIG_SECCOMP
error_report("-sandbox support is not enabled "
"in this QEMU binary");
#endif
exit(1);
}
opts = qemu_opts_parse_noisily(olist, optarg, true);
if (!opts) {
exit(1);
}
break;
case QEMU_OPTION_add_fd:
#ifndef _WIN32
opts = qemu_opts_parse_noisily(qemu_find_opts("add-fd"),
optarg, false);
if (!opts) {
exit(1);
}
#else
error_report("File descriptor passing is disabled on this "
"platform");
exit(1);
#endif
break;
case QEMU_OPTION_object:
object_option_parse(optarg);
break;
case QEMU_OPTION_overcommit:
overcommit_parse(optarg);
break;
case QEMU_OPTION_compat:
{
CompatPolicy *opts_policy;
Visitor *v;
v = qobject_input_visitor_new_str(optarg, NULL,
&error_fatal);
visit_type_CompatPolicy(v, NULL, &opts_policy, &error_fatal);
QAPI_CLONE_MEMBERS(CompatPolicy, &compat_policy, opts_policy);
qapi_free_CompatPolicy(opts_policy);
visit_free(v);
break;
}
case QEMU_OPTION_msg:
opts = qemu_opts_parse_noisily(qemu_find_opts("msg"), optarg,
false);
if (!opts) {
exit(1);
}
configure_msg(opts);
break;
case QEMU_OPTION_dump_vmstate:
if (vmstate_dump_file) {
error_report("only one '-dump-vmstate' "
"option may be given");
exit(1);
}
vmstate_dump_file = fopen(optarg, "w");
if (vmstate_dump_file == NULL) {
error_report("open %s: %s", optarg, strerror(errno));
exit(1);
}
break;
case QEMU_OPTION_enable_sync_profile:
qsp_enable();
break;
case QEMU_OPTION_nouserconfig:
/* Nothing to be parsed here. Especially, do not error out below. */
break;
#if defined(CONFIG_POSIX) && !defined(EMSCRIPTEN)
case QEMU_OPTION_daemonize:
os_set_daemonize(true);
break;
case QEMU_OPTION_run_with: {
const char *str;
opts = qemu_opts_parse_noisily(qemu_find_opts("run-with"),
optarg, false);
if (!opts) {
exit(1);
}
#if defined(CONFIG_LINUX)
if (qemu_opt_get_bool(opts, "async-teardown", false)) {
init_async_teardown();
}
#endif
str = qemu_opt_get(opts, "chroot");
if (str) {
os_set_chroot(str);
}
str = qemu_opt_get(opts, "user");
if (str) {
if (!os_set_runas(str)) {
error_report("User \"%s\" doesn't exist"
" (and is not <uid>:<gid>)",
optarg);
exit(1);
}
}
break;
}
#endif /* CONFIG_POSIX */
default:
error_report("Option not supported in this build");
exit(1);
}
}
}
/*
* Clear error location left behind by the loop.
* Best done right after the loop. Do not insert code here!
*/
loc_set_none();
qemu_validate_options(machine_opts_dict);
qemu_process_sugar_options();
/*
* These options affect everything else and should be processed
* before daemonizing.
*/
qemu_process_early_options();
qemu_process_help_options();
qemu_maybe_daemonize(pid_file);
/*
* The trace backend must be initialized after daemonizing.
* trace_init_backends() will call st_init(), which will create the
* trace thread in the parent, and also register st_flush_trace_buffer()
* in atexit(). This function will force the parent to wait for the
* writeout thread to finish, which will not occur, and the parent
* process will be left in the host.
*/
if (!trace_init_backends()) {
exit(1);
}
trace_init_file();
qemu_init_main_loop(&error_fatal);
cpu_timers_init();
user_register_global_props();
replay_configure(icount_opts);
configure_rtc(qemu_find_opts_singleton("rtc"));
/* Transfer QemuOpts options into machine options */
parse_memory_options();
qemu_create_machine(machine_opts_dict);
/*
* Load incoming CPR state before any devices are created, because it
* contains file descriptors that are needed in device initialization code.
*/
cpr_state_load(incoming_channels[MIGRATION_CHANNEL_TYPE_CPR], &error_fatal);
suspend_mux_open();
qemu_disable_default_devices();
qemu_setup_display();
qemu_create_default_devices();
qemu_create_early_backends();
qemu_apply_legacy_machine_options(machine_opts_dict);
qemu_apply_machine_options(machine_opts_dict);
qobject_unref(machine_opts_dict);
phase_advance(PHASE_MACHINE_CREATED);
/*
* Note: uses machine properties such as kernel-irqchip, must run
* after qemu_apply_machine_options.
*/
configure_accelerators(argv[0]);
phase_advance(PHASE_ACCEL_CREATED);
/*
* Beware, QOM objects created before this point miss global and
* compat properties.
*
* Global properties get set up by qdev_prop_register_global(),
* called from user_register_global_props(), and certain option
* desugaring. Also in CPU feature desugaring (buried in
* parse_cpu_option()), which happens below this point, but may
* only target the CPU type, which can only be created after
* parse_cpu_option() returned the type.
*
* Machine compat properties: object_set_machine_compat_props().
* Accelerator compat props: object_set_accelerator_compat_props(),
* called from do_configure_accelerator().
*/
machine_class = MACHINE_GET_CLASS(current_machine);
if (!qtest_enabled() && machine_class->deprecation_reason) {
warn_report("Machine type '%s' is deprecated: %s",
machine_class->name, machine_class->deprecation_reason);
}
/*
* Create backends before creating migration objects, so that it can
* check against compatibilities on the backend memories (e.g. postcopy
* over memory-backend-file objects).
*/
qemu_create_late_backends();
phase_advance(PHASE_LATE_BACKENDS_CREATED);
/*
* Note: creates a QOM object, must run only after global and
* compat properties have been set up.
*/
migration_object_init();
/* parse features once if machine provides default cpu_type */
current_machine->cpu_type = machine_class_default_cpu_type(machine_class);
if (cpu_option) {
current_machine->cpu_type = parse_cpu_option(cpu_option);
}
/* NB: for machine none cpu_type could STILL be NULL here! */
qemu_resolve_machine_memdev();
parse_numa_opts(current_machine);
if (vmstate_dump_file) {
/* dump and exit */
module_load_qom_all();
dump_vmstate_json_to_file(vmstate_dump_file);
exit(0);
}
if (!preconfig_requested) {
qmp_x_exit_preconfig(&error_fatal);
}
qemu_init_displays();
accel_setup_post(current_machine);
os_setup_post();
resume_mux_open();
}