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fuchsia / third_party / qemu / 40bd0502dbee3ca1a9a481dd32dabe9230b8a37f / . / softmmu / vl.c
blob: 58a40bcfc19c2e2ff67e8a15affdd48f583a5591 [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-common.h"
#include "qemu/units.h"
#include "hw/boards.h"
#include "hw/qdev-properties.h"
#include "qapi/error.h"
#include "qemu-version.h"
#include "qemu/cutils.h"
#include "qemu/help_option.h"
#include "qemu/uuid.h"
#include "sysemu/reset.h"
#include "sysemu/runstate.h"
#include "sysemu/seccomp.h"
#include "sysemu/tcg.h"
#include "qemu/error-report.h"
#include "qemu/sockets.h"
#include "sysemu/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 "migration/misc.h"
#include "migration/snapshot.h"
#include "migration/global_state.h"
#include "sysemu/tpm.h"
#include "sysemu/dma.h"
#include "hw/audio/soundhw.h"
#include "audio/audio.h"
#include "sysemu/cpus.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-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-root.h"
#include "trace/control.h"
#include "qemu/plugin.h"
#include "qemu/queue.h"
#include "sysemu/arch_init.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 "hw/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-ui.h"
#include "qapi/qapi-commands-block-core.h"
#include "qapi/qapi-commands-run-state.h"
#include "qapi/qapi-commands-ui.h"
#include "qapi/qmp/qerror.h"
#include "sysemu/iothread.h"
#include "qemu/guest-random.h"
#define MAX_VIRTIO_CONSOLES 1
static const char *data_dir[16];
static int data_dir_idx;
const char *bios_name = NULL;
enum vga_retrace_method vga_retrace_method = VGA_RETRACE_DUMB;
int display_opengl;
const char* keyboard_layout = NULL;
ram_addr_t ram_size;
bool enable_mlock = false;
bool enable_cpu_pm = false;
int nb_nics;
NICInfo nd_table[MAX_NICS];
int autostart;
static enum {
RTC_BASE_UTC,
RTC_BASE_LOCALTIME,
RTC_BASE_DATETIME,
} rtc_base_type = RTC_BASE_UTC;
static time_t rtc_ref_start_datetime;
static int rtc_realtime_clock_offset; /* used only with QEMU_CLOCK_REALTIME */
static int rtc_host_datetime_offset = -1; /* valid & used only with
RTC_BASE_DATETIME */
QEMUClockType rtc_clock;
int vga_interface_type = VGA_NONE;
static DisplayOptions dpy;
static int num_serial_hds;
static Chardev **serial_hds;
Chardev *parallel_hds[MAX_PARALLEL_PORTS];
int win2k_install_hack = 0;
int singlestep = 0;
int no_hpet = 0;
int fd_bootchk = 1;
static int no_reboot;
int no_shutdown = 0;
int graphic_rotate = 0;
const char *watchdog;
QEMUOptionRom option_rom[MAX_OPTION_ROMS];
int nb_option_roms;
int old_param = 0;
const char *qemu_name;
int alt_grab = 0;
int ctrl_grab = 0;
unsigned int nb_prom_envs = 0;
const char *prom_envs[MAX_PROM_ENVS];
int boot_menu;
bool boot_strict;
uint8_t *boot_splash_filedata;
int only_migratable; /* turn it off unless user states otherwise */
bool wakeup_suspend_enabled;
int icount_align_option;
/* The bytes in qemu_uuid are in the order specified by RFC4122, _not_ in the
* little-endian "wire format" described in the SMBIOS 2.6 specification.
*/
QemuUUID qemu_uuid;
bool qemu_uuid_set;
static NotifierList exit_notifiers =
NOTIFIER_LIST_INITIALIZER(exit_notifiers);
static NotifierList machine_init_done_notifiers =
NOTIFIER_LIST_INITIALIZER(machine_init_done_notifiers);
bool xen_allowed;
uint32_t xen_domid;
enum xen_mode xen_mode = XEN_EMULATE;
bool xen_domid_restrict;
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 = "ide-drive", .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 },
};
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_machine_opts = {
.name = "machine",
.implied_opt_name = "type",
.merge_lists = true,
.head = QTAILQ_HEAD_INITIALIZER(qemu_machine_opts.head),
.desc = {
/*
* no elements => accept any
* sanity checking will happen later
* when setting machine properties
*/
{ }
},
};
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_realtime_opts = {
.name = "realtime",
.head = QTAILQ_HEAD_INITIALIZER(qemu_realtime_opts.head),
.desc = {
{
.name = "mlock",
.type = QEMU_OPT_BOOL,
},
{ /* 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,
},
{ /* 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",
},
{ /* end of list */ }
},
};
/**
* Get machine options
*
* Returns: machine options (never null).
*/
QemuOpts *qemu_get_machine_opts(void)
{
return qemu_find_opts_singleton("machine");
}
const char *qemu_get_vm_name(void)
{
return qemu_name;
}
static void res_free(void)
{
g_free(boot_splash_filedata);
boot_splash_filedata = NULL;
}
static int default_driver_check(void *opaque, QemuOpts *opts, Error **errp)
{
const char *driver = qemu_opt_get(opts, "driver");
int i;
if (!driver)
return 0;
for (i = 0; i < ARRAY_SIZE(default_list); i++) {
if (strcmp(default_list[i].driver, driver) != 0)
continue;
*(default_list[i].flag) = 0;
}
return 0;
}
/***********************************************************/
/* QEMU state */
static RunState current_run_state = RUN_STATE_PRECONFIG;
/* We use RUN_STATE__MAX but any invalid value will do */
static RunState vmstop_requested = RUN_STATE__MAX;
static QemuMutex vmstop_lock;
typedef struct {
RunState from;
RunState to;
} RunStateTransition;
static const RunStateTransition runstate_transitions_def[] = {
/* from -> to */
{ RUN_STATE_PRECONFIG, RUN_STATE_PRELAUNCH },
/* Early switch to inmigrate state to allow -incoming CLI option work
* as it used to. TODO: delay actual switching to inmigrate state to
* the point after machine is built and remove this hack.
*/
{ RUN_STATE_PRECONFIG, RUN_STATE_INMIGRATE },
{ RUN_STATE_DEBUG, RUN_STATE_RUNNING },
{ RUN_STATE_DEBUG, RUN_STATE_FINISH_MIGRATE },
{ RUN_STATE_DEBUG, RUN_STATE_PRELAUNCH },
{ RUN_STATE_INMIGRATE, RUN_STATE_INTERNAL_ERROR },
{ RUN_STATE_INMIGRATE, RUN_STATE_IO_ERROR },
{ RUN_STATE_INMIGRATE, RUN_STATE_PAUSED },
{ RUN_STATE_INMIGRATE, RUN_STATE_RUNNING },
{ RUN_STATE_INMIGRATE, RUN_STATE_SHUTDOWN },
{ RUN_STATE_INMIGRATE, RUN_STATE_SUSPENDED },
{ RUN_STATE_INMIGRATE, RUN_STATE_WATCHDOG },
{ RUN_STATE_INMIGRATE, RUN_STATE_GUEST_PANICKED },
{ RUN_STATE_INMIGRATE, RUN_STATE_FINISH_MIGRATE },
{ RUN_STATE_INMIGRATE, RUN_STATE_PRELAUNCH },
{ RUN_STATE_INMIGRATE, RUN_STATE_POSTMIGRATE },
{ RUN_STATE_INMIGRATE, RUN_STATE_COLO },
{ RUN_STATE_INTERNAL_ERROR, RUN_STATE_PAUSED },
{ RUN_STATE_INTERNAL_ERROR, RUN_STATE_FINISH_MIGRATE },
{ RUN_STATE_INTERNAL_ERROR, RUN_STATE_PRELAUNCH },
{ RUN_STATE_IO_ERROR, RUN_STATE_RUNNING },
{ RUN_STATE_IO_ERROR, RUN_STATE_FINISH_MIGRATE },
{ RUN_STATE_IO_ERROR, RUN_STATE_PRELAUNCH },
{ RUN_STATE_PAUSED, RUN_STATE_RUNNING },
{ RUN_STATE_PAUSED, RUN_STATE_FINISH_MIGRATE },
{ RUN_STATE_PAUSED, RUN_STATE_POSTMIGRATE },
{ RUN_STATE_PAUSED, RUN_STATE_PRELAUNCH },
{ RUN_STATE_PAUSED, RUN_STATE_COLO},
{ RUN_STATE_POSTMIGRATE, RUN_STATE_RUNNING },
{ RUN_STATE_POSTMIGRATE, RUN_STATE_FINISH_MIGRATE },
{ RUN_STATE_POSTMIGRATE, RUN_STATE_PRELAUNCH },
{ RUN_STATE_PRELAUNCH, RUN_STATE_RUNNING },
{ RUN_STATE_PRELAUNCH, RUN_STATE_FINISH_MIGRATE },
{ RUN_STATE_PRELAUNCH, RUN_STATE_INMIGRATE },
{ RUN_STATE_FINISH_MIGRATE, RUN_STATE_RUNNING },
{ RUN_STATE_FINISH_MIGRATE, RUN_STATE_PAUSED },
{ RUN_STATE_FINISH_MIGRATE, RUN_STATE_POSTMIGRATE },
{ RUN_STATE_FINISH_MIGRATE, RUN_STATE_PRELAUNCH },
{ RUN_STATE_FINISH_MIGRATE, RUN_STATE_COLO},
{ RUN_STATE_RESTORE_VM, RUN_STATE_RUNNING },
{ RUN_STATE_RESTORE_VM, RUN_STATE_PRELAUNCH },
{ RUN_STATE_COLO, RUN_STATE_RUNNING },
{ RUN_STATE_RUNNING, RUN_STATE_DEBUG },
{ RUN_STATE_RUNNING, RUN_STATE_INTERNAL_ERROR },
{ RUN_STATE_RUNNING, RUN_STATE_IO_ERROR },
{ RUN_STATE_RUNNING, RUN_STATE_PAUSED },
{ RUN_STATE_RUNNING, RUN_STATE_FINISH_MIGRATE },
{ RUN_STATE_RUNNING, RUN_STATE_RESTORE_VM },
{ RUN_STATE_RUNNING, RUN_STATE_SAVE_VM },
{ RUN_STATE_RUNNING, RUN_STATE_SHUTDOWN },
{ RUN_STATE_RUNNING, RUN_STATE_WATCHDOG },
{ RUN_STATE_RUNNING, RUN_STATE_GUEST_PANICKED },
{ RUN_STATE_RUNNING, RUN_STATE_COLO},
{ RUN_STATE_SAVE_VM, RUN_STATE_RUNNING },
{ RUN_STATE_SHUTDOWN, RUN_STATE_PAUSED },
{ RUN_STATE_SHUTDOWN, RUN_STATE_FINISH_MIGRATE },
{ RUN_STATE_SHUTDOWN, RUN_STATE_PRELAUNCH },
{ RUN_STATE_DEBUG, RUN_STATE_SUSPENDED },
{ RUN_STATE_RUNNING, RUN_STATE_SUSPENDED },
{ RUN_STATE_SUSPENDED, RUN_STATE_RUNNING },
{ RUN_STATE_SUSPENDED, RUN_STATE_FINISH_MIGRATE },
{ RUN_STATE_SUSPENDED, RUN_STATE_PRELAUNCH },
{ RUN_STATE_SUSPENDED, RUN_STATE_COLO},
{ RUN_STATE_WATCHDOG, RUN_STATE_RUNNING },
{ RUN_STATE_WATCHDOG, RUN_STATE_FINISH_MIGRATE },
{ RUN_STATE_WATCHDOG, RUN_STATE_PRELAUNCH },
{ RUN_STATE_WATCHDOG, RUN_STATE_COLO},
{ RUN_STATE_GUEST_PANICKED, RUN_STATE_RUNNING },
{ RUN_STATE_GUEST_PANICKED, RUN_STATE_FINISH_MIGRATE },
{ RUN_STATE_GUEST_PANICKED, RUN_STATE_PRELAUNCH },
{ RUN_STATE__MAX, RUN_STATE__MAX },
};
static bool runstate_valid_transitions[RUN_STATE__MAX][RUN_STATE__MAX];
bool runstate_check(RunState state)
{
return current_run_state == state;
}
bool runstate_store(char *str, size_t size)
{
const char *state = RunState_str(current_run_state);
size_t len = strlen(state) + 1;
if (len > size) {
return false;
}
memcpy(str, state, len);
return true;
}
static void runstate_init(void)
{
const RunStateTransition *p;
memset(&runstate_valid_transitions, 0, sizeof(runstate_valid_transitions));
for (p = &runstate_transitions_def[0]; p->from != RUN_STATE__MAX; p++) {
runstate_valid_transitions[p->from][p->to] = true;
}
qemu_mutex_init(&vmstop_lock);
}
/* This function will abort() on invalid state transitions */
void runstate_set(RunState new_state)
{
assert(new_state < RUN_STATE__MAX);
trace_runstate_set(current_run_state, RunState_str(current_run_state),
new_state, RunState_str(new_state));
if (current_run_state == new_state) {
return;
}
if (!runstate_valid_transitions[current_run_state][new_state]) {
error_report("invalid runstate transition: '%s' -> '%s'",
RunState_str(current_run_state),
RunState_str(new_state));
abort();
}
current_run_state = new_state;
}
int runstate_is_running(void)
{
return runstate_check(RUN_STATE_RUNNING);
}
bool runstate_needs_reset(void)
{
return runstate_check(RUN_STATE_INTERNAL_ERROR) ||
runstate_check(RUN_STATE_SHUTDOWN);
}
StatusInfo *qmp_query_status(Error **errp)
{
StatusInfo *info = g_malloc0(sizeof(*info));
info->running = runstate_is_running();
info->singlestep = singlestep;
info->status = current_run_state;
return info;
}
bool qemu_vmstop_requested(RunState *r)
{
qemu_mutex_lock(&vmstop_lock);
*r = vmstop_requested;
vmstop_requested = RUN_STATE__MAX;
qemu_mutex_unlock(&vmstop_lock);
return *r < RUN_STATE__MAX;
}
void qemu_system_vmstop_request_prepare(void)
{
qemu_mutex_lock(&vmstop_lock);
}
void qemu_system_vmstop_request(RunState state)
{
vmstop_requested = state;
qemu_mutex_unlock(&vmstop_lock);
qemu_notify_event();
}
/***********************************************************/
/* RTC reference time/date access */
static time_t qemu_ref_timedate(QEMUClockType clock)
{
time_t value = qemu_clock_get_ms(clock) / 1000;
switch (clock) {
case QEMU_CLOCK_REALTIME:
value -= rtc_realtime_clock_offset;
/* fall through */
case QEMU_CLOCK_VIRTUAL:
value += rtc_ref_start_datetime;
break;
case QEMU_CLOCK_HOST:
if (rtc_base_type == RTC_BASE_DATETIME) {
value -= rtc_host_datetime_offset;
}
break;
default:
assert(0);
}
return value;
}
void qemu_get_timedate(struct tm *tm, int offset)
{
time_t ti = qemu_ref_timedate(rtc_clock);
ti += offset;
switch (rtc_base_type) {
case RTC_BASE_DATETIME:
case RTC_BASE_UTC:
gmtime_r(&ti, tm);
break;
case RTC_BASE_LOCALTIME:
localtime_r(&ti, tm);
break;
}
}
int qemu_timedate_diff(struct tm *tm)
{
time_t seconds;
switch (rtc_base_type) {
case RTC_BASE_DATETIME:
case RTC_BASE_UTC:
seconds = mktimegm(tm);
break;
case RTC_BASE_LOCALTIME:
{
struct tm tmp = *tm;
tmp.tm_isdst = -1; /* use timezone to figure it out */
seconds = mktime(&tmp);
break;
}
default:
abort();
}
return seconds - qemu_ref_timedate(QEMU_CLOCK_HOST);
}
static void configure_rtc_base_datetime(const char *startdate)
{
time_t rtc_start_datetime;
struct tm tm;
if (sscanf(startdate, "%d-%d-%dT%d:%d:%d", &tm.tm_year, &tm.tm_mon,
&tm.tm_mday, &tm.tm_hour, &tm.tm_min, &tm.tm_sec) == 6) {
/* OK */
} else if (sscanf(startdate, "%d-%d-%d",
&tm.tm_year, &tm.tm_mon, &tm.tm_mday) == 3) {
tm.tm_hour = 0;
tm.tm_min = 0;
tm.tm_sec = 0;
} else {
goto date_fail;
}
tm.tm_year -= 1900;
tm.tm_mon--;
rtc_start_datetime = mktimegm(&tm);
if (rtc_start_datetime == -1) {
date_fail:
error_report("invalid datetime format");
error_printf("valid formats: "
"'2006-06-17T16:01:21' or '2006-06-17'\n");
exit(1);
}
rtc_host_datetime_offset = rtc_ref_start_datetime - rtc_start_datetime;
rtc_ref_start_datetime = rtc_start_datetime;
}
static void configure_rtc(QemuOpts *opts)
{
const char *value;
/* Set defaults */
rtc_clock = QEMU_CLOCK_HOST;
rtc_ref_start_datetime = qemu_clock_get_ms(QEMU_CLOCK_HOST) / 1000;
rtc_realtime_clock_offset = qemu_clock_get_ms(QEMU_CLOCK_REALTIME) / 1000;
value = qemu_opt_get(opts, "base");
if (value) {
if (!strcmp(value, "utc")) {
rtc_base_type = RTC_BASE_UTC;
} else if (!strcmp(value, "localtime")) {
Error *blocker = NULL;
rtc_base_type = RTC_BASE_LOCALTIME;
error_setg(&blocker, QERR_REPLAY_NOT_SUPPORTED,
"-rtc base=localtime");
replay_add_blocker(blocker);
} else {
rtc_base_type = RTC_BASE_DATETIME;
configure_rtc_base_datetime(value);
}
}
value = qemu_opt_get(opts, "clock");
if (value) {
if (!strcmp(value, "host")) {
rtc_clock = QEMU_CLOCK_HOST;
} else if (!strcmp(value, "rt")) {
rtc_clock = QEMU_CLOCK_REALTIME;
} else if (!strcmp(value, "vm")) {
rtc_clock = QEMU_CLOCK_VIRTUAL;
} else {
error_report("invalid option value '%s'", value);
exit(1);
}
}
value = qemu_opt_get(opts, "driftfix");
if (value) {
if (!strcmp(value, "slew")) {
object_register_sugar_prop("mc146818rtc",
"lost_tick_policy",
"slew");
} else if (!strcmp(value, "none")) {
/* discard is default */
} else {
error_report("invalid option value '%s'", value);
exit(1);
}
}
}
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;
}
typedef struct BlockdevOptionsQueueEntry {
BlockdevOptions *bdo;
Location loc;
QSIMPLEQ_ENTRY(BlockdevOptionsQueueEntry) entry;
} BlockdevOptionsQueueEntry;
typedef QSIMPLEQ_HEAD(, BlockdevOptionsQueueEntry) BlockdevOptionsQueue;
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 = "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)
{
error_with_timestamp = qemu_opt_get_bool(opts, "timestamp", 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 */
MachineState *current_machine;
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 int machine_help_func(QemuOpts *opts, MachineState *machine)
{
ObjectProperty *prop;
ObjectPropertyIterator iter;
if (!qemu_opt_has_help_opt(opts)) {
return 0;
}
object_property_iter_init(&iter, OBJECT(machine));
while ((prop = object_property_iter_next(&iter))) {
if (!prop->set) {
continue;
}
printf("%s.%s=%s", MACHINE_GET_CLASS(machine)->name,
prop->name, prop->type);
if (prop->description) {
printf(" (%s)\n", prop->description);
} else {
printf("\n");
}
}
return 1;
}
struct VMChangeStateEntry {
VMChangeStateHandler *cb;
void *opaque;
QTAILQ_ENTRY(VMChangeStateEntry) entries;
int priority;
};
static QTAILQ_HEAD(, VMChangeStateEntry) vm_change_state_head;
/**
* qemu_add_vm_change_state_handler_prio:
* @cb: the callback to invoke
* @opaque: user data passed to the callback
* @priority: low priorities execute first when the vm runs and the reverse is
* true when the vm stops
*
* Register a callback function that is invoked when the vm starts or stops
* running.
*
* Returns: an entry to be freed using qemu_del_vm_change_state_handler()
*/
VMChangeStateEntry *qemu_add_vm_change_state_handler_prio(
VMChangeStateHandler *cb, void *opaque, int priority)
{
VMChangeStateEntry *e;
VMChangeStateEntry *other;
e = g_malloc0(sizeof(*e));
e->cb = cb;
e->opaque = opaque;
e->priority = priority;
/* Keep list sorted in ascending priority order */
QTAILQ_FOREACH(other, &vm_change_state_head, entries) {
if (priority < other->priority) {
QTAILQ_INSERT_BEFORE(other, e, entries);
return e;
}
}
QTAILQ_INSERT_TAIL(&vm_change_state_head, e, entries);
return e;
}
VMChangeStateEntry *qemu_add_vm_change_state_handler(VMChangeStateHandler *cb,
void *opaque)
{
return qemu_add_vm_change_state_handler_prio(cb, opaque, 0);
}
void qemu_del_vm_change_state_handler(VMChangeStateEntry *e)
{
QTAILQ_REMOVE(&vm_change_state_head, e, entries);
g_free(e);
}
void vm_state_notify(int running, RunState state)
{
VMChangeStateEntry *e, *next;
trace_vm_state_notify(running, state, RunState_str(state));
if (running) {
QTAILQ_FOREACH_SAFE(e, &vm_change_state_head, entries, next) {
e->cb(e->opaque, running, state);
}
} else {
QTAILQ_FOREACH_REVERSE_SAFE(e, &vm_change_state_head, entries, next) {
e->cb(e->opaque, running, state);
}
}
}
static ShutdownCause reset_requested;
static ShutdownCause shutdown_requested;
static int shutdown_signal;
static pid_t shutdown_pid;
static int powerdown_requested;
static int debug_requested;
static int suspend_requested;
static bool preconfig_exit_requested = true;
static WakeupReason wakeup_reason;
static NotifierList powerdown_notifiers =
NOTIFIER_LIST_INITIALIZER(powerdown_notifiers);
static NotifierList suspend_notifiers =
NOTIFIER_LIST_INITIALIZER(suspend_notifiers);
static NotifierList wakeup_notifiers =
NOTIFIER_LIST_INITIALIZER(wakeup_notifiers);
static NotifierList shutdown_notifiers =
NOTIFIER_LIST_INITIALIZER(shutdown_notifiers);
static uint32_t wakeup_reason_mask = ~(1 << QEMU_WAKEUP_REASON_NONE);
ShutdownCause qemu_shutdown_requested_get(void)
{
return shutdown_requested;
}
ShutdownCause qemu_reset_requested_get(void)
{
return reset_requested;
}
static int qemu_shutdown_requested(void)
{
return atomic_xchg(&shutdown_requested, SHUTDOWN_CAUSE_NONE);
}
static void qemu_kill_report(void)
{
if (!qtest_driver() && shutdown_signal) {
if (shutdown_pid == 0) {
/* This happens for eg ^C at the terminal, so it's worth
* avoiding printing an odd message in that case.
*/
error_report("terminating on signal %d", shutdown_signal);
} else {
char *shutdown_cmd = qemu_get_pid_name(shutdown_pid);
error_report("terminating on signal %d from pid " FMT_pid " (%s)",
shutdown_signal, shutdown_pid,
shutdown_cmd ? shutdown_cmd : "<unknown process>");
g_free(shutdown_cmd);
}
shutdown_signal = 0;
}
}
static ShutdownCause qemu_reset_requested(void)
{
ShutdownCause r = reset_requested;
if (r && replay_checkpoint(CHECKPOINT_RESET_REQUESTED)) {
reset_requested = SHUTDOWN_CAUSE_NONE;
return r;
}
return SHUTDOWN_CAUSE_NONE;
}
static int qemu_suspend_requested(void)
{
int r = suspend_requested;
if (r && replay_checkpoint(CHECKPOINT_SUSPEND_REQUESTED)) {
suspend_requested = 0;
return r;
}
return false;
}
static WakeupReason qemu_wakeup_requested(void)
{
return wakeup_reason;
}
static int qemu_powerdown_requested(void)
{
int r = powerdown_requested;
powerdown_requested = 0;
return r;
}
static int qemu_debug_requested(void)
{
int r = debug_requested;
debug_requested = 0;
return r;
}
void qemu_exit_preconfig_request(void)
{
preconfig_exit_requested = true;
}
/*
* Reset the VM. Issue an event unless @reason is SHUTDOWN_CAUSE_NONE.
*/
void qemu_system_reset(ShutdownCause reason)
{
MachineClass *mc;
mc = current_machine ? MACHINE_GET_CLASS(current_machine) : NULL;
cpu_synchronize_all_states();
if (mc && mc->reset) {
mc->reset(current_machine);
} else {
qemu_devices_reset();
}
if (reason && reason != SHUTDOWN_CAUSE_SUBSYSTEM_RESET) {
qapi_event_send_reset(shutdown_caused_by_guest(reason), reason);
}
cpu_synchronize_all_post_reset();
}
/*
* Wake the VM after suspend.
*/
static void qemu_system_wakeup(void)
{
MachineClass *mc;
mc = current_machine ? MACHINE_GET_CLASS(current_machine) : NULL;
if (mc && mc->wakeup) {
mc->wakeup(current_machine);
}
}
void qemu_system_guest_panicked(GuestPanicInformation *info)
{
qemu_log_mask(LOG_GUEST_ERROR, "Guest crashed");
if (current_cpu) {
current_cpu->crash_occurred = true;
}
qapi_event_send_guest_panicked(GUEST_PANIC_ACTION_PAUSE,
!!info, info);
vm_stop(RUN_STATE_GUEST_PANICKED);
if (!no_shutdown) {
qapi_event_send_guest_panicked(GUEST_PANIC_ACTION_POWEROFF,
!!info, info);
qemu_system_shutdown_request(SHUTDOWN_CAUSE_GUEST_PANIC);
}
if (info) {
if (info->type == GUEST_PANIC_INFORMATION_TYPE_HYPER_V) {
qemu_log_mask(LOG_GUEST_ERROR, "\nHV crash parameters: (%#"PRIx64
" %#"PRIx64" %#"PRIx64" %#"PRIx64" %#"PRIx64")\n",
info->u.hyper_v.arg1,
info->u.hyper_v.arg2,
info->u.hyper_v.arg3,
info->u.hyper_v.arg4,
info->u.hyper_v.arg5);
} else if (info->type == GUEST_PANIC_INFORMATION_TYPE_S390) {
qemu_log_mask(LOG_GUEST_ERROR, " on cpu %d: %s\n"
"PSW: 0x%016" PRIx64 " 0x%016" PRIx64"\n",
info->u.s390.core,
S390CrashReason_str(info->u.s390.reason),
info->u.s390.psw_mask,
info->u.s390.psw_addr);
}
qapi_free_GuestPanicInformation(info);
}
}
void qemu_system_guest_crashloaded(GuestPanicInformation *info)
{
qemu_log_mask(LOG_GUEST_ERROR, "Guest crash loaded");
qapi_event_send_guest_crashloaded(GUEST_PANIC_ACTION_RUN,
!!info, info);
if (info) {
qapi_free_GuestPanicInformation(info);
}
}
void qemu_system_reset_request(ShutdownCause reason)
{
if (no_reboot && reason != SHUTDOWN_CAUSE_SUBSYSTEM_RESET) {
shutdown_requested = reason;
} else {
reset_requested = reason;
}
cpu_stop_current();
qemu_notify_event();
}
static void qemu_system_suspend(void)
{
pause_all_vcpus();
notifier_list_notify(&suspend_notifiers, NULL);
runstate_set(RUN_STATE_SUSPENDED);
qapi_event_send_suspend();
}
void qemu_system_suspend_request(void)
{
if (runstate_check(RUN_STATE_SUSPENDED)) {
return;
}
suspend_requested = 1;
cpu_stop_current();
qemu_notify_event();
}
void qemu_register_suspend_notifier(Notifier *notifier)
{
notifier_list_add(&suspend_notifiers, notifier);
}
void qemu_system_wakeup_request(WakeupReason reason, Error **errp)
{
trace_system_wakeup_request(reason);
if (!runstate_check(RUN_STATE_SUSPENDED)) {
error_setg(errp,
"Unable to wake up: guest is not in suspended state");
return;
}
if (!(wakeup_reason_mask & (1 << reason))) {
return;
}
runstate_set(RUN_STATE_RUNNING);
wakeup_reason = reason;
qemu_notify_event();
}
void qemu_system_wakeup_enable(WakeupReason reason, bool enabled)
{
if (enabled) {
wakeup_reason_mask |= (1 << reason);
} else {
wakeup_reason_mask &= ~(1 << reason);
}
}
void qemu_register_wakeup_notifier(Notifier *notifier)
{
notifier_list_add(&wakeup_notifiers, notifier);
}
void qemu_register_wakeup_support(void)
{
wakeup_suspend_enabled = true;
}
bool qemu_wakeup_suspend_enabled(void)
{
return wakeup_suspend_enabled;
}
void qemu_system_killed(int signal, pid_t pid)
{
shutdown_signal = signal;
shutdown_pid = pid;
no_shutdown = 0;
/* Cannot call qemu_system_shutdown_request directly because
* we are in a signal handler.
*/
shutdown_requested = SHUTDOWN_CAUSE_HOST_SIGNAL;
qemu_notify_event();
}
void qemu_system_shutdown_request(ShutdownCause reason)
{
trace_qemu_system_shutdown_request(reason);
replay_shutdown_request(reason);
shutdown_requested = reason;
qemu_notify_event();
}
static void qemu_system_powerdown(void)
{
qapi_event_send_powerdown();
notifier_list_notify(&powerdown_notifiers, NULL);
}
static void qemu_system_shutdown(ShutdownCause cause)
{
qapi_event_send_shutdown(shutdown_caused_by_guest(cause), cause);
notifier_list_notify(&shutdown_notifiers, &cause);
}
void qemu_system_powerdown_request(void)
{
trace_qemu_system_powerdown_request();
powerdown_requested = 1;
qemu_notify_event();
}
void qemu_register_powerdown_notifier(Notifier *notifier)
{
notifier_list_add(&powerdown_notifiers, notifier);
}
void qemu_register_shutdown_notifier(Notifier *notifier)
{
notifier_list_add(&shutdown_notifiers, notifier);
}
void qemu_system_debug_request(void)
{
debug_requested = 1;
qemu_notify_event();
}
static bool main_loop_should_exit(void)
{
RunState r;
ShutdownCause request;
if (preconfig_exit_requested) {
if (runstate_check(RUN_STATE_PRECONFIG)) {
runstate_set(RUN_STATE_PRELAUNCH);
}
preconfig_exit_requested = false;
return true;
}
if (qemu_debug_requested()) {
vm_stop(RUN_STATE_DEBUG);
}
if (qemu_suspend_requested()) {
qemu_system_suspend();
}
request = qemu_shutdown_requested();
if (request) {
qemu_kill_report();
qemu_system_shutdown(request);
if (no_shutdown) {
vm_stop(RUN_STATE_SHUTDOWN);
} else {
return true;
}
}
request = qemu_reset_requested();
if (request) {
pause_all_vcpus();
qemu_system_reset(request);
resume_all_vcpus();
/*
* runstate can change in pause_all_vcpus()
* as iothread mutex is unlocked
*/
if (!runstate_check(RUN_STATE_RUNNING) &&
!runstate_check(RUN_STATE_INMIGRATE) &&
!runstate_check(RUN_STATE_FINISH_MIGRATE)) {
runstate_set(RUN_STATE_PRELAUNCH);
}
}
if (qemu_wakeup_requested()) {
pause_all_vcpus();
qemu_system_wakeup();
notifier_list_notify(&wakeup_notifiers, &wakeup_reason);
wakeup_reason = QEMU_WAKEUP_REASON_NONE;
resume_all_vcpus();
qapi_event_send_wakeup();
}
if (qemu_powerdown_requested()) {
qemu_system_powerdown();
}
if (qemu_vmstop_requested(&r)) {
vm_stop(r);
}
return false;
}
void qemu_main_loop(void)
{
#ifdef CONFIG_PROFILER
int64_t ti;
#endif
while (!main_loop_should_exit()) {
#ifdef CONFIG_PROFILER
ti = profile_getclock();
#endif
main_loop_wait(false);
#ifdef CONFIG_PROFILER
dev_time += profile_getclock() - ti;
#endif
}
}
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",
error_get_progname());
#define QEMU_OPTIONS_GENERATE_HELP
#include "qemu-options-wrapper.h"
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 QEMU_OPTIONS_GENERATE_OPTIONS
#include "qemu-options-wrapper.h"
{ 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 = { "SUNW,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] ||
object_class_by_name(ti->class_names[0]) ||
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) {
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 *optarg)
{
DisplayOptions *opts;
Visitor *v;
v = qobject_input_visitor_new_str(optarg, "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)
{
const char *opts;
if (is_help_option(p)) {
qemu_display_help();
exit(0);
}
if (strstart(p, "sdl", &opts)) {
/*
* sdl DisplayType needs hand-crafted parser instead of
* parse_display_qapi() due to some options not in
* DisplayOptions, specifically:
* - frame
* Already deprecated.
* - ctrl_grab + alt_grab
* Not clear yet what happens to them long-term. Should
* replaced by something better or deprecated and dropped.
*/
dpy.type = DISPLAY_TYPE_SDL;
while (*opts) {
const char *nextopt;
if (strstart(opts, ",alt_grab=", &nextopt)) {
opts = nextopt;
if (strstart(opts, "on", &nextopt)) {
alt_grab = 1;
} else if (strstart(opts, "off", &nextopt)) {
alt_grab = 0;
} else {
goto invalid_sdl_args;
}
} else if (strstart(opts, ",ctrl_grab=", &nextopt)) {
opts = nextopt;
if (strstart(opts, "on", &nextopt)) {
ctrl_grab = 1;
} else if (strstart(opts, "off", &nextopt)) {
ctrl_grab = 0;
} else {
goto invalid_sdl_args;
}
} else if (strstart(opts, ",window_close=", &nextopt)) {
opts = nextopt;
dpy.has_window_close = true;
if (strstart(opts, "on", &nextopt)) {
dpy.window_close = true;
} else if (strstart(opts, "off", &nextopt)) {
dpy.window_close = false;
} else {
goto invalid_sdl_args;
}
} else if (strstart(opts, ",show-cursor=", &nextopt)) {
opts = nextopt;
dpy.has_show_cursor = true;
if (strstart(opts, "on", &nextopt)) {
dpy.show_cursor = true;
} else if (strstart(opts, "off", &nextopt)) {
dpy.show_cursor = false;
} else {
goto invalid_sdl_args;
}
} else if (strstart(opts, ",gl=", &nextopt)) {
opts = nextopt;
dpy.has_gl = true;
if (strstart(opts, "on", &nextopt)) {
dpy.gl = DISPLAYGL_MODE_ON;
} else if (strstart(opts, "core", &nextopt)) {
dpy.gl = DISPLAYGL_MODE_CORE;
} else if (strstart(opts, "es", &nextopt)) {
dpy.gl = DISPLAYGL_MODE_ES;
} else if (strstart(opts, "off", &nextopt)) {
dpy.gl = DISPLAYGL_MODE_OFF;
} else {
goto invalid_sdl_args;
}
} else {
invalid_sdl_args:
error_report("invalid SDL option string");
exit(1);
}
opts = nextopt;
}
} else if (strstart(p, "vnc", &opts)) {
/*
* vnc isn't a (local) DisplayType but a protocol for remote
* display access.
*/
if (*opts == '=') {
vnc_parse(opts + 1, &error_fatal);
} else {
error_report("VNC requires a display argument vnc=<display>");
exit(1);
}
} else {
parse_display_qapi(p);
}
}
char *qemu_find_file(int type, const char *name)
{
int i;
const char *subdir;
char *buf;
/* Try the name as a straight path first */
if (access(name, R_OK) == 0) {
trace_load_file(name, name);
return g_strdup(name);
}
switch (type) {
case QEMU_FILE_TYPE_BIOS:
subdir = "";
break;
case QEMU_FILE_TYPE_KEYMAP:
subdir = "keymaps/";
break;
default:
abort();
}
for (i = 0; i < data_dir_idx; i++) {
buf = g_strdup_printf("%s/%s%s", data_dir[i], subdir, name);
if (access(buf, R_OK) == 0) {
trace_load_file(name, buf);
return buf;
}
g_free(buf);
}
return NULL;
}
static void qemu_add_data_dir(const char *path)
{
int i;
if (path == NULL) {
return;
}
if (data_dir_idx == ARRAY_SIZE(data_dir)) {
return;
}
for (i = 0; i < data_dir_idx; i++) {
if (strcmp(data_dir[i], path) == 0) {
return; /* duplicate */
}
}
data_dir[data_dir_idx++] = g_strdup(path);
}
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;
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");
/* we need name and either a file or the content string */
if (!(nonempty_str(name) && (nonempty_str(file) || nonempty_str(str)))) {
error_setg(errp, "invalid argument(s)");
return -1;
}
if (nonempty_str(file) && nonempty_str(str)) {
error_setg(errp, "file and string are mutually exclusive");
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 (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 {
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;
}
}
/* For legacy, keep user files in a specific global order. */
fw_cfg_set_order_override(fw_cfg, FW_CFG_ORDER_OVERRIDE_USER);
fw_cfg_add_file(fw_cfg, name, buf, size);
fw_cfg_reset_order_override(fw_cfg);
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 *optarg, const char *mode, bool pretty)
{
static int monitor_device_index = 0;
QemuOpts *opts;
const char *p;
char label[32];
if (strstart(optarg, "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, optarg, true);
if (!opts) {
error_report("parse error: %s", optarg);
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);
}
static int foreach_device_config(int type, int (*func)(const char *cmdline))
{
struct device_config *conf;
int rc;
QTAILQ_FOREACH(conf, &device_configs, next) {
if (conf->type != type)
continue;
loc_push_restore(&conf->loc);
rc = func(conf->cmdline);
loc_pop(&conf->loc);
if (rc) {
return rc;
}
}
return 0;
}
static int serial_parse(const char *devname)
{
int index = num_serial_hds;
char label[32];
if (strcmp(devname, "none") == 0)
return 0;
snprintf(label, sizeof(label), "serial%d", index);
serial_hds = g_renew(Chardev *, serial_hds, index + 1);
serial_hds[index] = qemu_chr_new_mux_mon(label, devname, NULL);
if (!serial_hds[index]) {
error_report("could not connect serial device"
" to character backend '%s'", devname);
return -1;
}
num_serial_hds++;
return 0;
}
Chardev *serial_hd(int i)
{
assert(i >= 0);
if (i < num_serial_hds) {
return serial_hds[i];
}
return NULL;
}
int serial_max_hds(void)
{
return num_serial_hds;
}
static int parallel_parse(const char *devname)
{
static int index = 0;
char label[32];
if (strcmp(devname, "none") == 0)
return 0;
if (index == MAX_PARALLEL_PORTS) {
error_report("too many parallel ports");
exit(1);
}
snprintf(label, sizeof(label), "parallel%d", index);
parallel_hds[index] = qemu_chr_new_mux_mon(label, devname, NULL);
if (!parallel_hds[index]) {
error_report("could not connect parallel device"
" to character backend '%s'", devname);
return -1;
}
index++;
return 0;
}
static int debugcon_parse(const char *devname)
{
QemuOpts *opts;
if (!qemu_chr_new_mux_mon("debugcon", devname, NULL)) {
error_report("invalid character backend '%s'", devname);
exit(1);
}
opts = qemu_opts_create(qemu_find_opts("device"), "debugcon", 1, NULL);
if (!opts) {
error_report("already have a debugcon device");
exit(1);
}
qemu_opt_set(opts, "driver", "isa-debugcon", &error_abort);
qemu_opt_set(opts, "chardev", "debugcon", &error_abort);
return 0;
}
static gint machine_class_cmp(gconstpointer a, gconstpointer b)
{
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 MachineClass *machine_parse(const char *name, GSList *machines)
{
MachineClass *mc;
GSList *el;
if (is_help_option(name)) {
printf("Supported machines are:\n");
machines = g_slist_sort(machines, machine_class_cmp);
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)" : "");
}
exit(0);
}
mc = find_machine(name, machines);
if (!mc) {
error_report("unsupported machine type");
error_printf("Use -machine help to list supported machines\n");
exit(1);
}
return mc;
}
void qemu_add_exit_notifier(Notifier *notify)
{
notifier_list_add(&exit_notifiers, notify);
}
void qemu_remove_exit_notifier(Notifier *notify)
{
notifier_remove(notify);
}
static void qemu_run_exit_notifiers(void)
{
notifier_list_notify(&exit_notifiers, NULL);
}
static const char *pid_file;
static Notifier qemu_unlink_pidfile_notifier;
static void qemu_unlink_pidfile(Notifier *n, void *data)
{
if (pid_file) {
unlink(pid_file);
}
}
bool machine_init_done;
void qemu_add_machine_init_done_notifier(Notifier *notify)
{
notifier_list_add(&machine_init_done_notifiers, notify);
if (machine_init_done) {
notify->notify(notify, NULL);
}
}
void qemu_remove_machine_init_done_notifier(Notifier *notify)
{
notifier_remove(notify);
}
static void qemu_run_machine_init_done_notifiers(void)
{
machine_init_done = true;
notifier_list_notify(&machine_init_done_notifiers, NULL);
}
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(void)
{
GSList *machines = object_class_get_list(TYPE_MACHINE, false);
MachineClass *machine_class = find_default_machine(machines);
const char *optarg;
QemuOpts *opts;
Location loc;
loc_push_none(&loc);
opts = qemu_get_machine_opts();
qemu_opts_loc_restore(opts);
optarg = qemu_opt_get(opts, "type");
if (optarg) {
machine_class = machine_parse(optarg, machines);
}
if (!machine_class) {
error_report("No machine specified, and there is no default");
error_printf("Use -machine help to list supported machines\n");
exit(1);
}
loc_pop(&loc);
g_slist_free(machines);
return machine_class;
}
static int object_parse_property_opt(Object *obj,
const char *name, const char *value,
const char *skip, Error **errp)
{
Error *local_err = NULL;
if (g_str_equal(name, skip)) {
return 0;
}
object_property_parse(obj, value, name, &local_err);
if (local_err) {
error_propagate(errp, local_err);
return -1;
}
return 0;
}
static int machine_set_property(void *opaque,
const char *name, const char *value,
Error **errp)
{
g_autofree char *qom_name = g_strdup(name);
char *p;
for (p = qom_name; *p; p++) {
if (*p == '_') {
*p = '-';
}
}
/* Legacy options do not correspond to MachineState properties. */
if (g_str_equal(qom_name, "accel")) {
return 0;
}
if (g_str_equal(qom_name, "igd-passthru")) {
object_register_sugar_prop(ACCEL_CLASS_NAME("xen"), qom_name, value);
return 0;
}
if (g_str_equal(qom_name, "kvm-shadow-mem") ||
g_str_equal(qom_name, "kernel-irqchip")) {
object_register_sugar_prop(ACCEL_CLASS_NAME("kvm"), qom_name, value);
return 0;
}
return object_parse_property_opt(opaque, name, value, "type", errp);
}
/*
* 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_initial(const char *type, QemuOpts *opts)
{
if (user_creatable_print_help(type, opts)) {
exit(0);
}
/*
* Objects should not be made "delayed" without a reason. If you
* add one, state the reason in a comment!
*/
/* Reason: rng-egd property "chardev" */
if (g_str_equal(type, "rng-egd")) {
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: 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;
}
/* Memory allocation by backends needs to be done
* after configure_accelerator() (due to the tcg_enabled()
* checks at memory_region_init_*()).
*
* Also, 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
* (e.g. libvirt).
*/
if (g_str_has_prefix(type, "memory-backend-")) {
return false;
}
return true;
}
/*
* The remainder of object creation happens after the
* creation of chardev, fsdev, net clients and device data types.
*/
static bool object_create_delayed(const char *type, QemuOpts *opts)
{
return !object_create_initial(type, opts);
}
static bool set_memory_options(uint64_t *ram_slots, ram_addr_t *maxram_size,
MachineClass *mc)
{
uint64_t sz;
const char *mem_str;
const ram_addr_t default_ram_size = mc->default_ram_size;
QemuOpts *opts = qemu_find_opts_singleton("memory");
Location loc;
loc_push_none(&loc);
qemu_opts_loc_restore(opts);
sz = 0;
mem_str = qemu_opt_get(opts, "size");
if (mem_str) {
if (!*mem_str) {
error_report("missing 'size' option value");
exit(EXIT_FAILURE);
}
sz = qemu_opt_get_size(opts, "size", ram_size);
/* Fix up legacy suffix-less format */
if (g_ascii_isdigit(mem_str[strlen(mem_str) - 1])) {
uint64_t overflow_check = sz;
sz *= MiB;
if (sz / MiB != overflow_check) {
error_report("too large 'size' option value");
exit(EXIT_FAILURE);
}
}
}
/* backward compatibility behaviour for case "-m 0" */
if (sz == 0) {
sz = default_ram_size;
}
sz = QEMU_ALIGN_UP(sz, 8192);
if (mc->fixup_ram_size) {
sz = mc->fixup_ram_size(sz);
}
ram_size = sz;
if (ram_size != sz) {
error_report("ram size too large");
exit(EXIT_FAILURE);
}
/* store value for the future use */
qemu_opt_set_number(opts, "size", ram_size, &error_abort);
*maxram_size = ram_size;
if (qemu_opt_get(opts, "maxmem")) {
uint64_t slots;
sz = qemu_opt_get_size(opts, "maxmem", 0);
slots = qemu_opt_get_number(opts, "slots", 0);
if (sz < ram_size) {
error_report("invalid value of -m option maxmem: "
"maximum memory size (0x%" PRIx64 ") must be at least "
"the initial memory size (0x" RAM_ADDR_FMT ")",
sz, ram_size);
exit(EXIT_FAILURE);
} else if (slots && sz == ram_size) {
error_report("invalid value of -m option maxmem: "
"memory slots were specified but maximum memory size "
"(0x%" PRIx64 ") is equal to the initial memory size "
"(0x" RAM_ADDR_FMT ")", sz, ram_size);
exit(EXIT_FAILURE);
}
*maxram_size = sz;
*ram_slots = slots;
} else if (qemu_opt_get(opts, "slots")) {
error_report("invalid -m option value: missing 'maxmem' option");
exit(EXIT_FAILURE);
}
loc_pop(&loc);
return !!mem_str;
}
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;
}
static int qemu_read_default_config_file(void)
{
int ret;
ret = qemu_read_config_file(CONFIG_QEMU_CONFDIR "/qemu.conf");
if (ret < 0 && ret != -ENOENT) {
return ret;
}
return 0;
}
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)
{
configure_icount(opts, errp);
return 0;
}
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;
if (!ac) {
*p_init_failed = true;
error_report("invalid accelerator %s", acc);
return 0;
}
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) {
*p_init_failed = true;
error_report("failed to initialize %s: %s",
acc, strerror(-ret));
return 0;
}
return 1;
}
static void configure_accelerators(const char *progname)
{
const char *accel;
bool init_failed = false;
qemu_opts_foreach(qemu_find_opts("icount"),
do_configure_icount, NULL, &error_fatal);
accel = qemu_opt_get(qemu_get_machine_opts(), "accel");
if (QTAILQ_EMPTY(&qemu_accel_opts.head)) {
char **accel_list, **tmp;
if (accel == NULL) {
/* Select the default accelerator */
bool have_tcg = accel_find("tcg");
bool have_kvm = accel_find("kvm");
if (have_tcg && have_kvm) {
if (g_str_has_suffix(progname, "kvm")) {
/* If the program name ends with "kvm", we prefer KVM */
accel = "kvm:tcg";
} else {
accel = "tcg:kvm";
}
} else if (have_kvm) {
accel = "kvm";
} else if (have_tcg) {
accel = "tcg";
} else {
error_report("No accelerator selected and"
" no default accelerator available");
exit(1);
}
}
accel_list = g_strsplit(accel, ":", 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 (accel != 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) {
AccelClass *ac = ACCEL_GET_CLASS(current_accel());
error_report("falling back to %s", ac->name);
}
if (use_icount && !(tcg_enabled() || qtest_enabled())) {
error_report("-icount is not allowed with hardware virtualization");
exit(1);
}
}
static void create_default_memdev(MachineState *ms, const char *path)
{
Object *obj;
MachineClass *mc = MACHINE_GET_CLASS(ms);
obj = object_new(path ? TYPE_MEMORY_BACKEND_FILE : TYPE_MEMORY_BACKEND_RAM);
if (path) {
object_property_set_str(obj, path, "mem-path", &error_fatal);
}
object_property_set_int(obj, ms->ram_size, "size", &error_fatal);
object_property_add_child(object_get_objects_root(), mc->default_ram_id,
obj, &error_fatal);
/* Ensure backend's memory region name is equal to mc->default_ram_id */
object_property_set_bool(obj, false, "x-use-canonical-path-for-ramblock-id",
&error_fatal);
user_creatable_complete(USER_CREATABLE(obj), &error_fatal);
object_unref(obj);
object_property_set_str(OBJECT(ms), mc->default_ram_id, "memory-backend",
&error_fatal);
}
void qemu_init(int argc, char **argv, char **envp)
{
int i;
int snapshot, linux_boot;
const char *initrd_filename;
const char *kernel_filename, *kernel_cmdline;
const char *boot_order = NULL;
const char *boot_once = NULL;
DisplayState *ds;
QemuOpts *opts, *machine_opts;
QemuOpts *icount_opts = NULL, *accel_opts = NULL;
QemuOptsList *olist;
int optind;
const char *optarg;
const char *loadvm = NULL;
MachineClass *machine_class;
const char *cpu_option;
const char *vga_model = NULL;
const char *qtest_chrdev = NULL;
const char *qtest_log = NULL;
const char *incoming = NULL;
bool userconfig = true;
bool nographic = false;
int display_remote = 0;
const char *log_mask = NULL;
const char *log_file = NULL;
char *trace_file = NULL;
ram_addr_t maxram_size;
uint64_t ram_slots = 0;
FILE *vmstate_dump_file = NULL;
Error *main_loop_err = NULL;
Error *err = NULL;
bool list_data_dirs = false;
char *dir, **dirs;
const char *mem_path = NULL;
bool have_custom_ram_size;
BlockdevOptionsQueue bdo_queue = QSIMPLEQ_HEAD_INITIALIZER(bdo_queue);
QemuPluginList plugin_list = QTAILQ_HEAD_INITIALIZER(plugin_list);
int mem_prealloc = 0; /* force preallocation of physical target memory */
os_set_line_buffering();
error_init(argv[0]);
module_call_init(MODULE_INIT_TRACE);
qemu_init_cpu_list();
qemu_init_cpu_loop();
qemu_mutex_lock_iothread();
atexit(qemu_run_exit_notifiers);
qemu_init_exec_dir(argv[0]);
module_call_init(MODULE_INIT_QOM);
module_call_init(MODULE_INIT_MIGRATION);
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_machine_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_realtime_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);
module_call_init(MODULE_INIT_OPTS);
runstate_init();
precopy_infrastructure_init();
postcopy_infrastructure_init();
monitor_init_globals();
if (qcrypto_init(&err) < 0) {
error_reportf_err(err, "cannot initialize crypto: ");
exit(1);
}
QTAILQ_INIT(&vm_change_state_head);
os_setup_early_signal_handling();
cpu_option = NULL;
snapshot = 0;
nb_nics = 0;
bdrv_init_with_whitelist();
autostart = 1;
/* 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;
}
}
}
if (userconfig) {
if (qemu_read_default_config_file() < 0) {
exit(1);
}
}
/* 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 (!(popt->arch_mask & arch_type)) {
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:
if (drive_def(optarg) == NULL) {
exit(1);
}
break;
case QEMU_OPTION_set:
if (qemu_set_option(optarg) != 0)
exit(1);
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:
{
Error *blocker = NULL;
snapshot = 1;
error_setg(&blocker, QERR_REPLAY_NOT_SUPPORTED,
"-snapshot");
replay_add_blocker(blocker);
}
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:
olist = qemu_find_opts("machine");
qemu_opts_parse_noisily(olist, "graphics=off", false);
nographic = true;
dpy.type = DISPLAY_TYPE_NONE;
break;
case QEMU_OPTION_curses:
#ifdef CONFIG_CURSES
dpy.type = DISPLAY_TYPE_CURSES;
#else
error_report("curses or iconv support is disabled");
exit(1);
#endif
break;
case QEMU_OPTION_portrait:
graphic_rotate = 90;
break;
case QEMU_OPTION_rotate:
graphic_rotate = strtol(optarg, (char **) &optarg, 10);
if (graphic_rotate != 0 && graphic_rotate != 90 &&
graphic_rotate != 180 && graphic_rotate != 270) {
error_report("only 90, 180, 270 deg rotation is available");
exit(1);
}
break;
case QEMU_OPTION_kernel:
qemu_opts_set(qemu_find_opts("machine"), 0, "kernel",