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vl.c
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/*
* 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-common.h"
#include "qemu/datadir.h"
#include "qemu/units.h"
#include "exec/cpu-common.h"
#include "hw/qdev-properties.h"
#include "qapi/compat-policy.h"
#include "qapi/error.h"
#include "qapi/qmp/qdict.h"
#include "qapi/qmp/qstring.h"
#include "qapi/qmp/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 "sysemu/reset.h"
#include "sysemu/runstate.h"
#include "sysemu/runstate-action.h"
#include "sysemu/seccomp.h"
#include "sysemu/tcg.h"
#include "sysemu/xen.h"
#include "qemu/error-report.h"
#include "qemu/sockets.h"
#include "qemu/accel.h"
#include "hw/usb.h"
#include "hw/isa/isa.h"
#include "hw/scsi/scsi.h"
#include "hw/display/vga.h"
#include "sysemu/watchdog.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 "sysemu/sysemu.h"
#include "sysemu/numa.h"
#include "sysemu/hostmem.h"
#include "exec/gdbstub.h"
#include "qemu/timer.h"
#include "chardev/char.h"
#include "qemu/bitmap.h"
#include "qemu/log.h"
#include "sysemu/blockdev.h"
#include "hw/block/block.h"
#include "hw/i386/x86.h"
#include "hw/i386/pc.h"
#include "migration/misc.h"
#include "migration/snapshot.h"
#include "sysemu/tpm.h"
#include "sysemu/dma.h"
#include "hw/audio/soundhw.h"
#include "audio/audio.h"
#include "sysemu/cpus.h"
#include "sysemu/cpu-timers.h"
#include "migration/colo.h"
#include "migration/postcopy-ram.h"
#include "sysemu/kvm.h"
#include "sysemu/hax.h"
#include "qapi/qobject-input-visitor.h"
#include "qemu/option.h"
#include "qemu/config-file.h"
#include "qemu/qemu-options.h"
#include "qemu/main-loop.h"
#ifdef CONFIG_VIRTFS
#include "fsdev/qemu-fsdev.h"
#endif
#include "sysemu/qtest.h"
#include "disas/disas.h"
#include "trace.h"
#include "trace/control.h"
#include "qemu/plugin.h"
#include "qemu/queue.h"
#include "sysemu/arch_init.h"
#include "exec/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 "sysemu/replay.h"
#include "qapi/qapi-events-run-state.h"
#include "qapi/qapi-visit-block-core.h"
#include "qapi/qapi-visit-compat.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 "qapi/qmp/qdict.h"
#include "qapi/qmp/qerror.h"
#include "sysemu/iothread.h"
#include "qemu/guest-random.h"
#include "config-host.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 *loadvm;
static const char *accelerators;
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 ram_addr_t maxram_size;
static uint64_t ram_slots;
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 ram_addr_t ram_size;
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 *watchdog;
static const char *qtest_chrdev;
static const char *qtest_log;
static int has_defaults = 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 int default_sdcard = 1;
static int default_vga = 1;
static int default_net = 1;
static struct {
const char *driver;
int *flag;
} default_list[] = {
{ .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 },
};
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_BOOL,
},
{
.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, 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(default_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 = "sockets",
.type = QEMU_OPT_NUMBER,
}, {
.name = "dies",
.type = QEMU_OPT_NUMBER,
}, {
.name = "clusters",
.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 */ }
},
};
static void realtime_init(void)
{
if (enable_mlock) {
if (os_mlock() < 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 int usb_device_add(const char *devname)
{
USBDevice *dev = NULL;
if (!machine_usb(current_machine)) {
return -1;
}
dev = usbdevice_create(devname);
if (!dev)
return -1;
return 0;
}
static int usb_parse(const char *cmdline)
{
int r;
r = usb_device_add(cmdline);
if (r < 0) {
error_report("could not add USB device '%s'", cmdline);
}
return r;
}
/***********************************************************/
/* 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 ((arch_mask) & arch_type) \
fputs(opt_help, stdout);
#define ARCHHEADING(text, arch_mask) \
if ((arch_mask) & arch_type) \
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 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);
}
#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"
{ NULL },
};
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" },
},
[VGA_XENFB] = {
.opt_name = "xenfb",
.name = "Xen paravirtualized framebuffer",
},
};
static bool vga_interface_available(VGAInterfaceType t)
{
const VGAInterfaceInfo *ti = &vga_interfaces[t];
assert(t < VGA_TYPE_MAX);
return !ti->class_names[0] ||
module_object_class_by_name(ti->class_names[0]) ||
module_object_class_by_name(ti->class_names[1]);
}
static const char *
get_default_vga_model(const MachineClass *machine_class)
{
if (machine_class->default_display) {
return machine_class->default_display;
} 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 ?: "",
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) {