/* * 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 : ""); 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="); 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); 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", optarg, &error_abort); break; case QEMU_OPTION_initrd: qemu_opts_set(qemu_find_opts("machine"), 0, "initrd", optarg, &error_abort); break; case QEMU_OPTION_append: qemu_opts_set(qemu_find_opts("machine"), 0, "append", optarg, &error_abort); break; case QEMU_OPTION_dtb: qemu_opts_set(qemu_find_opts("machine"), 0, "dtb", optarg, &error_abort); break; case QEMU_OPTION_cdrom: drive_add(IF_DEFAULT, 2, optarg, CDROM_OPTS); break; case QEMU_OPTION_boot: opts = qemu_opts_parse_noisily(qemu_find_opts("boot-opts"), optarg, true); if (!opts) { exit(1); } break; case QEMU_OPTION_fda: case QEMU_OPTION_fdb: drive_add(IF_FLOPPY, popt->index - QEMU_OPTION_fda, optarg, FD_OPTS); break; case QEMU_OPTION_no_fd_bootchk: fd_bootchk = 0; break; case QEMU_OPTION_netdev: default_net = 0; if (net_client_parse(qemu_find_opts("netdev"), optarg) == -1) { exit(1); } break; case QEMU_OPTION_nic: default_net = 0; if (net_client_parse(qemu_find_opts("nic"), optarg) == -1) { exit(1); } break; case QEMU_OPTION_net: default_net = 0; if (net_client_parse(qemu_find_opts("net"), optarg) == -1) { exit(1); } break; #ifdef CONFIG_LIBISCSI case QEMU_OPTION_iscsi: opts = qemu_opts_parse_noisily(qemu_find_opts("iscsi"), optarg, false); if (!opts) { exit(1); } break; #endif case QEMU_OPTION_audio_help: audio_legacy_help(); exit (0); break; case QEMU_OPTION_audiodev: audio_parse_option(optarg); break; case QEMU_OPTION_soundhw: select_soundhw (optarg); break; case QEMU_OPTION_h: help(0); break; case QEMU_OPTION_version: version(); exit(0); break; case QEMU_OPTION_m: opts = qemu_opts_parse_noisily(qemu_find_opts("memory"), optarg, true); if (!opts) { exit(EXIT_FAILURE); } break; #ifdef CONFIG_TPM case QEMU_OPTION_tpmdev: if (tpm_config_parse(qemu_find_opts("tpmdev"), optarg) < 0) { exit(1); } break; #endif case QEMU_OPTION_mempath: mem_path = optarg; break; case QEMU_OPTION_mem_prealloc: mem_prealloc = 1; break; case QEMU_OPTION_d: log_mask = optarg; break; case QEMU_OPTION_D: log_file = optarg; break; case QEMU_OPTION_DFILTER: qemu_set_dfilter_ranges(optarg, &error_fatal); break; case QEMU_OPTION_seed: qemu_guest_random_seed_main(optarg, &error_fatal); break; case QEMU_OPTION_s: add_device_config(DEV_GDB, "tcp::" DEFAULT_GDBSTUB_PORT); break; case QEMU_OPTION_gdb: add_device_config(DEV_GDB, optarg); break; case QEMU_OPTION_L: if (is_help_option(optarg)) { list_data_dirs = true; } else { qemu_add_data_dir(optarg); } break; case QEMU_OPTION_bios: qemu_opts_set(qemu_find_opts("machine"), 0, "firmware", optarg, &error_abort); break; case QEMU_OPTION_singlestep: singlestep = 1; break; case QEMU_OPTION_S: autostart = 0; break; case QEMU_OPTION_k: keyboard_layout = optarg; break; case QEMU_OPTION_vga: vga_model = optarg; default_vga = 0; break; case QEMU_OPTION_g: { const char *p; int w, h, depth; p = optarg; w = strtol(p, (char **)&p, 10); if (w <= 0) { graphic_error: error_report("invalid resolution or depth"); exit(1); } if (*p != 'x') goto graphic_error; p++; h = strtol(p, (char **)&p, 10); if (h <= 0) goto graphic_error; if (*p == 'x') { p++; depth = strtol(p, (char **)&p, 10); if (depth != 1 && depth != 2 && depth != 4 && depth != 8 && depth != 15 && depth != 16 && depth != 24 && depth != 32) goto graphic_error; } else if (*p == '\0') { depth = graphic_depth; } else { goto graphic_error; } graphic_width = w; graphic_height = h; graphic_depth = depth; } break; case QEMU_OPTION_echr: { char *r; term_escape_char = strtol(optarg, &r, 0); if (r == optarg) printf("Bad argument to echr\n"); break; } case QEMU_OPTION_monitor: default_monitor = 0; if (strncmp(optarg, "none", 4)) { monitor_parse(optarg, "readline", false); } break; case QEMU_OPTION_qmp: monitor_parse(optarg, "control", false); default_monitor = 0; break; case QEMU_OPTION_qmp_pretty: monitor_parse(optarg, "control", true); default_monitor = 0; break; case QEMU_OPTION_mon: opts = qemu_opts_parse_noisily(qemu_find_opts("mon"), optarg, true); if (!opts) { exit(1); } default_monitor = 0; break; case QEMU_OPTION_chardev: opts = qemu_opts_parse_noisily(qemu_find_opts("chardev"), optarg, true); if (!opts) { exit(1); } break; case QEMU_OPTION_fsdev: olist = qemu_find_opts("fsdev"); if (!olist) { error_report("fsdev support is disabled"); exit(1); } opts = qemu_opts_parse_noisily(olist, optarg, true); if (!opts) { exit(1); } break; case QEMU_OPTION_virtfs: { QemuOpts *fsdev; QemuOpts *device; const char *writeout, *sock_fd, *socket, *path, *security_model, *multidevs; olist = qemu_find_opts("virtfs"); if (!olist) { error_report("virtfs support is disabled"); exit(1); } opts = qemu_opts_parse_noisily(olist, optarg, true); if (!opts) { exit(1); } if (qemu_opt_get(opts, "fsdriver") == NULL || qemu_opt_get(opts, "mount_tag") == NULL) { error_report("Usage: -virtfs fsdriver,mount_tag=tag"); exit(1); } fsdev = qemu_opts_create(qemu_find_opts("fsdev"), qemu_opts_id(opts) ?: qemu_opt_get(opts, "mount_tag"), 1, NULL); if (!fsdev) { error_report("duplicate or invalid fsdev id: %s", qemu_opt_get(opts, "mount_tag")); exit(1); } writeout = qemu_opt_get(opts, "writeout"); if (writeout) { #ifdef CONFIG_SYNC_FILE_RANGE qemu_opt_set(fsdev, "writeout", writeout, &error_abort); #else error_report("writeout=immediate not supported " "on this platform"); exit(1); #endif } qemu_opt_set(fsdev, "fsdriver", qemu_opt_get(opts, "fsdriver"), &error_abort); path = qemu_opt_get(opts, "path"); if (path) { qemu_opt_set(fsdev, "path", path, &error_abort); } security_model = qemu_opt_get(opts, "security_model"); if (security_model) { qemu_opt_set(fsdev, "security_model", security_model, &error_abort); } socket = qemu_opt_get(opts, "socket"); if (socket) { qemu_opt_set(fsdev, "socket", socket, &error_abort); } sock_fd = qemu_opt_get(opts, "sock_fd"); if (sock_fd) { qemu_opt_set(fsdev, "sock_fd", sock_fd, &error_abort); } qemu_opt_set_bool(fsdev, "readonly", qemu_opt_get_bool(opts, "readonly", 0), &error_abort); multidevs = qemu_opt_get(opts, "multidevs"); if (multidevs) { qemu_opt_set(fsdev, "multidevs", multidevs, &error_abort); } device = qemu_opts_create(qemu_find_opts("device"), NULL, 0, &error_abort); qemu_opt_set(device, "driver", "virtio-9p-pci", &error_abort); qemu_opt_set(device, "fsdev", qemu_opts_id(fsdev), &error_abort); qemu_opt_set(device, "mount_tag", qemu_opt_get(opts, "mount_tag"), &error_abort); break; } case QEMU_OPTION_serial: add_device_config(DEV_SERIAL, optarg); default_serial = 0; if (strncmp(optarg, "mon:", 4) == 0) { default_monitor = 0; } break; case QEMU_OPTION_watchdog: if (watchdog) { error_report("only one watchdog option may be given"); exit(1); } watchdog = optarg; break; case QEMU_OPTION_watchdog_action: if (select_watchdog_action(optarg) == -1) { error_report("unknown -watchdog-action parameter"); exit(1); } break; case QEMU_OPTION_parallel: add_device_config(DEV_PARALLEL, optarg); default_parallel = 0; if (strncmp(optarg, "mon:", 4) == 0) { default_monitor = 0; } break; case QEMU_OPTION_debugcon: add_device_config(DEV_DEBUGCON, optarg); break; case QEMU_OPTION_loadvm: loadvm = optarg; break; case QEMU_OPTION_full_screen: dpy.has_full_screen = true; dpy.full_screen = true; break; case QEMU_OPTION_alt_grab: alt_grab = 1; break; case QEMU_OPTION_ctrl_grab: ctrl_grab = 1; break; case QEMU_OPTION_no_quit: dpy.has_window_close = true; dpy.window_close = false; break; case QEMU_OPTION_sdl: #ifdef CONFIG_SDL dpy.type = DISPLAY_TYPE_SDL; break; #else error_report("SDL support is disabled"); exit(1); #endif case QEMU_OPTION_pidfile: pid_file = optarg; break; case QEMU_OPTION_win2k_hack: win2k_install_hack = 1; break; case QEMU_OPTION_acpitable: opts = qemu_opts_parse_noisily(qemu_find_opts("acpi"), optarg, true); if (!opts) { exit(1); } acpi_table_add(opts, &error_fatal); break; case QEMU_OPTION_smbios: opts = qemu_opts_parse_noisily(qemu_find_opts("smbios"), optarg, false); if (!opts) { exit(1); } smbios_entry_add(opts, &error_fatal); break; case QEMU_OPTION_fwcfg: opts = qemu_opts_parse_noisily(qemu_find_opts("fw_cfg"), optarg, true); if (opts == NULL) { exit(1); } break; case QEMU_OPTION_preconfig: preconfig_exit_requested = false; break; case QEMU_OPTION_enable_kvm: olist = qemu_find_opts("machine"); qemu_opts_parse_noisily(olist, "accel=kvm", false); break; case QEMU_OPTION_M: case QEMU_OPTION_machine: olist = qemu_find_opts("machine"); opts = qemu_opts_parse_noisily(olist, optarg, true); if (!opts) { exit(1); } break; case QEMU_OPTION_no_kvm: olist = qemu_find_opts("machine"); qemu_opts_parse_noisily(olist, "accel=tcg", false); break; case QEMU_OPTION_accel: accel_opts = qemu_opts_parse_noisily(qemu_find_opts("accel"), optarg, true); optarg = qemu_opt_get(accel_opts, "accel"); if (!optarg || is_help_option(optarg)) { printf("Accelerators supported in QEMU binary:\n"); GSList *el, *accel_list = object_class_get_list(TYPE_ACCEL, false); for (el = accel_list; el; el = el->next) { gchar *typename = g_strdup(object_class_get_name( OBJECT_CLASS(el->data))); /* omit qtest which is used for tests only */ if (g_strcmp0(typename, ACCEL_CLASS_NAME("qtest")) && g_str_has_suffix(typename, ACCEL_CLASS_SUFFIX)) { gchar **optname = g_strsplit(typename, ACCEL_CLASS_SUFFIX, 0); printf("%s\n", optname[0]); g_strfreev(optname); } g_free(typename); } g_slist_free(accel_list); exit(0); } if (optarg && strchr(optarg, ':')) { error_report("Don't use ':' with -accel, " "use -M accel=... for now instead"); exit(1); } break; case QEMU_OPTION_usb: olist = qemu_find_opts("machine"); qemu_opts_parse_noisily(olist, "usb=on", false); break; case QEMU_OPTION_usbdevice: error_report("'-usbdevice' is deprecated, please use " "'-device usb-...' instead"); olist = qemu_find_opts("machine"); qemu_opts_parse_noisily(olist, "usb=on", false); add_device_config(DEV_USB, optarg); break; case QEMU_OPTION_device: if (!qemu_opts_parse_noisily(qemu_find_opts("device"), optarg, true)) { exit(1); } break; case QEMU_OPTION_smp: if (!qemu_opts_parse_noisily(qemu_find_opts("smp-opts"), optarg, true)) { exit(1); } break; case QEMU_OPTION_vnc: vnc_parse(optarg, &error_fatal); break; case QEMU_OPTION_no_acpi: olist = qemu_find_opts("machine"); qemu_opts_parse_noisily(olist, "acpi=off", false); break; case QEMU_OPTION_no_hpet: no_hpet = 1; break; case QEMU_OPTION_no_reboot: no_reboot = 1; break; case QEMU_OPTION_no_shutdown: no_shutdown = 1; break; case QEMU_OPTION_show_cursor: warn_report("The -show-cursor option is deprecated, " "use -display {sdl,gtk},show-cursor=on instead"); dpy.has_show_cursor = true; dpy.show_cursor = true; break; case QEMU_OPTION_uuid: if (qemu_uuid_parse(optarg, &qemu_uuid) < 0) { error_report("failed to parse UUID string: wrong format"); exit(1); } qemu_uuid_set = true; break; case QEMU_OPTION_option_rom: if (nb_option_roms >= MAX_OPTION_ROMS) { error_report("too many option ROMs"); exit(1); } opts = qemu_opts_parse_noisily(qemu_find_opts("option-rom"), optarg, true); if (!opts) { exit(1); } option_rom[nb_option_roms].name = qemu_opt_get(opts, "romfile"); option_rom[nb_option_roms].bootindex = qemu_opt_get_number(opts, "bootindex", -1); if (!option_rom[nb_option_roms].name) { error_report("Option ROM file is not specified"); exit(1); } nb_option_roms++; break; case QEMU_OPTION_semihosting: qemu_semihosting_enable(); break; case QEMU_OPTION_semihosting_config: if (qemu_semihosting_config_options(optarg) != 0) { exit(1); } break; case QEMU_OPTION_name: opts = qemu_opts_parse_noisily(qemu_find_opts("name"), optarg, true); if (!opts) { exit(1); } break; case QEMU_OPTION_prom_env: if (nb_prom_envs >= MAX_PROM_ENVS) { error_report("too many prom variables"); exit(1); } prom_envs[nb_prom_envs] = optarg; nb_prom_envs++; break; case QEMU_OPTION_old_param: old_param = 1; break; case QEMU_OPTION_rtc: opts = qemu_opts_parse_noisily(qemu_find_opts("rtc"), optarg, false); if (!opts) { exit(1); } break; case QEMU_OPTION_tb_size: #ifndef CONFIG_TCG error_report("TCG is disabled"); exit(1); #endif warn_report("The -tb-size option is deprecated, use -accel tcg,tb-size instead"); object_register_sugar_prop(ACCEL_CLASS_NAME("tcg"), "tb-size", optarg); break; case QEMU_OPTION_icount: icount_opts = qemu_opts_parse_noisily(qemu_find_opts("icount"), optarg, true); if (!icount_opts) { exit(1); } break; case QEMU_OPTION_incoming: if (!incoming) { runstate_set(RUN_STATE_INMIGRATE); } incoming = optarg; break; case QEMU_OPTION_only_migratable: only_migratable = 1; break; case QEMU_OPTION_nodefaults: has_defaults = 0; break; case QEMU_OPTION_xen_domid: if (!(xen_available())) { error_report("Option not supported for this target"); exit(1); } xen_domid = atoi(optarg); break; case QEMU_OPTION_xen_attach: if (!(xen_available())) { error_report("Option not supported for this target"); exit(1); } xen_mode = XEN_ATTACH; break; case QEMU_OPTION_xen_domid_restrict: if (!(xen_available())) { error_report("Option not supported for this target"); exit(1); } xen_domid_restrict = true; break; case QEMU_OPTION_trace: g_free(trace_file); trace_file = trace_opt_parse(optarg); break; case QEMU_OPTION_plugin: qemu_plugin_opt_parse(optarg, &plugin_list); break; case QEMU_OPTION_readconfig: { int ret = qemu_read_config_file(optarg); if (ret < 0) { error_report("read config %s: %s", optarg, strerror(-ret)); exit(1); } break; } case QEMU_OPTION_spice: olist = qemu_find_opts("spice"); if (!olist) { error_report("spice support is disabled"); exit(1); } opts = qemu_opts_parse_noisily(olist, optarg, false); if (!opts) { exit(1); } display_remote++; break; case QEMU_OPTION_writeconfig: { FILE *fp; if (strcmp(optarg, "-") == 0) { fp = stdout; } else { fp = fopen(optarg, "w"); if (fp == NULL) { error_report("open %s: %s", optarg, strerror(errno)); exit(1); } } qemu_config_write(fp); if (fp != stdout) { fclose(fp); } break; } case QEMU_OPTION_qtest: qtest_chrdev = optarg; break; case QEMU_OPTION_qtest_log: qtest_log = optarg; break; case QEMU_OPTION_sandbox: olist = qemu_find_opts("sandbox"); if (!olist) { #ifndef CONFIG_SECCOMP error_report("-sandbox support is not enabled " "in this QEMU binary"); #endif exit(1); } opts = qemu_opts_parse_noisily(olist, optarg, true); if (!opts) { exit(1); } break; case QEMU_OPTION_add_fd: #ifndef _WIN32 opts = qemu_opts_parse_noisily(qemu_find_opts("add-fd"), optarg, false); if (!opts) { exit(1); } #else error_report("File descriptor passing is disabled on this " "platform"); exit(1); #endif break; case QEMU_OPTION_object: opts = qemu_opts_parse_noisily(qemu_find_opts("object"), optarg, true); if (!opts) { exit(1); } break; case QEMU_OPTION_realtime: warn_report("'-realtime mlock=...' is deprecated, please use " "'-overcommit mem-lock=...' instead"); opts = qemu_opts_parse_noisily(qemu_find_opts("realtime"), optarg, false); if (!opts) { exit(1); } /* Don't override the -overcommit option if set */ enable_mlock = enable_mlock || qemu_opt_get_bool(opts, "mlock", true); break; case QEMU_OPTION_overcommit: opts = qemu_opts_parse_noisily(qemu_find_opts("overcommit"), optarg, false); if (!opts) { exit(1); } /* Don't override the -realtime option if set */ enable_mlock = enable_mlock || qemu_opt_get_bool(opts, "mem-lock", false); enable_cpu_pm = qemu_opt_get_bool(opts, "cpu-pm", false); break; case QEMU_OPTION_msg: opts = qemu_opts_parse_noisily(qemu_find_opts("msg"), optarg, false); if (!opts) { exit(1); } configure_msg(opts); break; case QEMU_OPTION_dump_vmstate: if (vmstate_dump_file) { error_report("only one '-dump-vmstate' " "option may be given"); exit(1); } vmstate_dump_file = fopen(optarg, "w"); if (vmstate_dump_file == NULL) { error_report("open %s: %s", optarg, strerror(errno)); exit(1); } break; case QEMU_OPTION_enable_sync_profile: qsp_enable(); break; case QEMU_OPTION_nouserconfig: /* Nothing to be parsed here. Especially, do not error out below. */ break; default: if (os_parse_cmd_args(popt->index, optarg)) { error_report("Option not supported in this build"); exit(1); } } } } /* * Clear error location left behind by the loop. * Best done right after the loop. Do not insert code here! */ loc_set_none(); /* * Check for -cpu help and -device help before we call select_machine(), * which will return an error if the architecture has no default machine * type and the user did not specify one, so that the user doesn't need * to say '-cpu help -machine something'. */ if (cpu_option && is_help_option(cpu_option)) { list_cpus(cpu_option); exit(0); } if (qemu_opts_foreach(qemu_find_opts("device"), device_help_func, NULL, NULL)) { exit(0); } user_register_global_props(); replay_configure(icount_opts); if (incoming && !preconfig_exit_requested) { error_report("'preconfig' and 'incoming' options are " "mutually exclusive"); exit(EXIT_FAILURE); } configure_rtc(qemu_find_opts_singleton("rtc")); machine_class = select_machine(); object_set_machine_compat_props(machine_class->compat_props); have_custom_ram_size = set_memory_options(&ram_slots, &maxram_size, machine_class); os_daemonize(); /* * If QTest is enabled, keep the rcu_atfork enabled, since system processes * may be forked testing purposes (e.g. fork-server based fuzzing) The fork * should happen before a signle cpu instruction is executed, to prevent * deadlocks. See commit 73c6e40, rcu: "completely disable pthread_atfork * callbacks as soon as possible" */ if (!qtest_enabled()) { rcu_disable_atfork(); } if (pid_file && !qemu_write_pidfile(pid_file, &err)) { error_reportf_err(err, "cannot create PID file: "); exit(1); } qemu_unlink_pidfile_notifier.notify = qemu_unlink_pidfile; qemu_add_exit_notifier(&qemu_unlink_pidfile_notifier); if (qemu_init_main_loop(&main_loop_err)) { error_report_err(main_loop_err); exit(1); } #ifdef CONFIG_SECCOMP olist = qemu_find_opts_err("sandbox", NULL); if (olist) { qemu_opts_foreach(olist, parse_sandbox, NULL, &error_fatal); } #endif qemu_opts_foreach(qemu_find_opts("name"), parse_name, NULL, &error_fatal); #ifndef _WIN32 qemu_opts_foreach(qemu_find_opts("add-fd"), parse_add_fd, NULL, &error_fatal); qemu_opts_foreach(qemu_find_opts("add-fd"), cleanup_add_fd, NULL, &error_fatal); #endif current_machine = MACHINE(object_new_with_class(OBJECT_CLASS(machine_class))); if (machine_help_func(qemu_get_machine_opts(), current_machine)) { exit(0); } object_property_add_child(object_get_root(), "machine", OBJECT(current_machine), &error_abort); object_property_add_child(container_get(OBJECT(current_machine), "/unattached"), "sysbus", OBJECT(sysbus_get_default()), NULL); if (machine_class->minimum_page_bits) { if (!set_preferred_target_page_bits(machine_class->minimum_page_bits)) { /* This would be a board error: specifying a minimum smaller than * a target's compile-time fixed setting. */ g_assert_not_reached(); } } cpu_exec_init_all(); if (machine_class->hw_version) { qemu_set_hw_version(machine_class->hw_version); } if (!trace_init_backends()) { exit(1); } trace_init_file(trace_file); /* Open the logfile at this point and set the log mask if necessary. */ qemu_set_log_filename(log_file, &error_fatal); if (log_mask) { int mask; mask = qemu_str_to_log_mask(log_mask); if (!mask) { qemu_print_log_usage(stdout); exit(1); } qemu_set_log(mask); } else { qemu_set_log(0); } /* add configured firmware directories */ dirs = g_strsplit(CONFIG_QEMU_FIRMWAREPATH, G_SEARCHPATH_SEPARATOR_S, 0); for (i = 0; dirs[i] != NULL; i++) { qemu_add_data_dir(dirs[i]); } g_strfreev(dirs); /* try to find datadir relative to the executable path */ dir = os_find_datadir(); qemu_add_data_dir(dir); g_free(dir); /* add the datadir specified when building */ qemu_add_data_dir(CONFIG_QEMU_DATADIR); /* -L help lists the data directories and exits. */ if (list_data_dirs) { for (i = 0; i < data_dir_idx; i++) { printf("%s\n", data_dir[i]); } exit(0); } /* machine_class: default to UP */ machine_class->max_cpus = machine_class->max_cpus ?: 1; machine_class->min_cpus = machine_class->min_cpus ?: 1; machine_class->default_cpus = machine_class->default_cpus ?: 1; /* default to machine_class->default_cpus */ current_machine->smp.cpus = machine_class->default_cpus; current_machine->smp.max_cpus = machine_class->default_cpus; current_machine->smp.cores = 1; current_machine->smp.threads = 1; current_machine->smp.sockets = 1; machine_class->smp_parse(current_machine, qemu_opts_find(qemu_find_opts("smp-opts"), NULL)); /* sanity-check smp_cpus and max_cpus against machine_class */ if (current_machine->smp.cpus < machine_class->min_cpus) { error_report("Invalid SMP CPUs %d. The min CPUs " "supported by machine '%s' is %d", current_machine->smp.cpus, machine_class->name, machine_class->min_cpus); exit(1); } if (current_machine->smp.max_cpus > machine_class->max_cpus) { error_report("Invalid SMP CPUs %d. The max CPUs " "supported by machine '%s' is %d", current_machine->smp.max_cpus, machine_class->name, machine_class->max_cpus); exit(1); } if (mem_prealloc) { char *val; val = g_strdup_printf("%d", current_machine->smp.cpus); object_register_sugar_prop("memory-backend", "prealloc-threads", val); g_free(val); object_register_sugar_prop("memory-backend", "prealloc", "on"); } /* * Get the default machine options from the machine if it is not already * specified either by the configuration file or by the command line. */ if (machine_class->default_machine_opts) { qemu_opts_set_defaults(qemu_find_opts("machine"), machine_class->default_machine_opts, 0); } /* process plugin before CPUs are created, but once -smp has been parsed */ if (qemu_plugin_load_list(&plugin_list)) { exit(1); } qemu_opts_foreach(qemu_find_opts("device"), default_driver_check, NULL, NULL); qemu_opts_foreach(qemu_find_opts("global"), default_driver_check, NULL, NULL); if (!vga_model && !default_vga) { vga_interface_type = VGA_DEVICE; } if (!has_defaults || machine_class->no_serial) { default_serial = 0; } if (!has_defaults || machine_class->no_parallel) { default_parallel = 0; } if (!has_defaults || machine_class->no_floppy) { default_floppy = 0; } if (!has_defaults || machine_class->no_cdrom) { default_cdrom = 0; } if (!has_defaults || machine_class->no_sdcard) { default_sdcard = 0; } if (!has_defaults) { default_monitor = 0; default_net = 0; default_vga = 0; } if (is_daemonized()) { if (!preconfig_exit_requested) { error_report("'preconfig' and 'daemonize' options are " "mutually exclusive"); exit(EXIT_FAILURE); } /* According to documentation and historically, -nographic redirects * serial port, parallel port and monitor to stdio, which does not work * with -daemonize. We can redirect these to null instead, but since * -nographic is legacy, let's just error out. * We disallow -nographic only if all other ports are not redirected * explicitly, to not break existing legacy setups which uses * -nographic _and_ redirects all ports explicitly - this is valid * usage, -nographic is just a no-op in this case. */ if (nographic && (default_parallel || default_serial || default_monitor)) { error_report("-nographic cannot be used with -daemonize"); exit(1); } #ifdef CONFIG_CURSES if (dpy.type == DISPLAY_TYPE_CURSES) { error_report("curses display cannot be used with -daemonize"); exit(1); } #endif } if (nographic) { if (default_parallel) add_device_config(DEV_PARALLEL, "null"); if (default_serial && default_monitor) { add_device_config(DEV_SERIAL, "mon:stdio"); } else { if (default_serial) add_device_config(DEV_SERIAL, "stdio"); if (default_monitor) monitor_parse("stdio", "readline", false); } } else { if (default_serial) add_device_config(DEV_SERIAL, "vc:80Cx24C"); if (default_parallel) add_device_config(DEV_PARALLEL, "vc:80Cx24C"); if (default_monitor) monitor_parse("vc:80Cx24C", "readline", false); } #if defined(CONFIG_VNC) if (!QTAILQ_EMPTY(&(qemu_find_opts("vnc")->head))) { display_remote++; } #endif if (dpy.type == DISPLAY_TYPE_DEFAULT && !display_remote) { if (!qemu_display_find_default(&dpy)) { dpy.type = DISPLAY_TYPE_NONE; #if defined(CONFIG_VNC) vnc_parse("localhost:0,to=99,id=default", &error_abort); #endif } } if (dpy.type == DISPLAY_TYPE_DEFAULT) { dpy.type = DISPLAY_TYPE_NONE; } if ((alt_grab || ctrl_grab) && dpy.type != DISPLAY_TYPE_SDL) { error_report("-alt-grab and -ctrl-grab are only valid " "for SDL, ignoring option"); } if (dpy.has_window_close && (dpy.type != DISPLAY_TYPE_GTK && dpy.type != DISPLAY_TYPE_SDL)) { error_report("-no-quit is only valid for GTK and SDL, " "ignoring option"); } qemu_display_early_init(&dpy); qemu_console_early_init(); if (dpy.has_gl && dpy.gl != DISPLAYGL_MODE_OFF && display_opengl == 0) { #if defined(CONFIG_OPENGL) error_report("OpenGL is not supported by the display"); #else error_report("OpenGL support is disabled"); #endif exit(1); } page_size_init(); socket_init(); qemu_opts_foreach(qemu_find_opts("object"), user_creatable_add_opts_foreach, object_create_initial, &error_fatal); qemu_opts_foreach(qemu_find_opts("chardev"), chardev_init_func, NULL, &error_fatal); /* now chardevs have been created we may have semihosting to connect */ qemu_semihosting_connect_chardevs(); #ifdef CONFIG_VIRTFS qemu_opts_foreach(qemu_find_opts("fsdev"), fsdev_init_func, NULL, &error_fatal); #endif /* * Note: we need to create block backends before * machine_set_property(), so machine properties can refer to * them. */ configure_blockdev(&bdo_queue, machine_class, snapshot); machine_opts = qemu_get_machine_opts(); qemu_opt_foreach(machine_opts, machine_set_property, current_machine, &error_fatal); current_machine->ram_size = ram_size; current_machine->maxram_size = maxram_size; current_machine->ram_slots = ram_slots; /* * Note: uses machine properties such as kernel-irqchip, must run * after machine_set_property(). */ configure_accelerators(argv[0]); /* * Beware, QOM objects created before this point miss global and * compat properties. * * Global properties get set up by qdev_prop_register_global(), * called from user_register_global_props(), and certain option * desugaring. Also in CPU feature desugaring (buried in * parse_cpu_option()), which happens below this point, but may * only target the CPU type, which can only be created after * parse_cpu_option() returned the type. * * Machine compat properties: object_set_machine_compat_props(). * Accelerator compat props: object_set_accelerator_compat_props(), * called from configure_accelerator(). */ if (!qtest_enabled() && machine_class->deprecation_reason) { error_report("Machine type '%s' is deprecated: %s", machine_class->name, machine_class->deprecation_reason); } /* * Note: creates a QOM object, must run only after global and * compat properties have been set up. */ migration_object_init(); if (qtest_chrdev) { qtest_server_init(qtest_chrdev, qtest_log, &error_fatal); } machine_opts = qemu_get_machine_opts(); kernel_filename = qemu_opt_get(machine_opts, "kernel"); initrd_filename = qemu_opt_get(machine_opts, "initrd"); kernel_cmdline = qemu_opt_get(machine_opts, "append"); bios_name = qemu_opt_get(machine_opts, "firmware"); opts = qemu_opts_find(qemu_find_opts("boot-opts"), NULL); if (opts) { boot_order = qemu_opt_get(opts, "order"); if (boot_order) { validate_bootdevices(boot_order, &error_fatal); } boot_once = qemu_opt_get(opts, "once"); if (boot_once) { validate_bootdevices(boot_once, &error_fatal); } boot_menu = qemu_opt_get_bool(opts, "menu", boot_menu); boot_strict = qemu_opt_get_bool(opts, "strict", false); } if (!boot_order) { boot_order = machine_class->default_boot_order; } if (!kernel_cmdline) { kernel_cmdline = ""; current_machine->kernel_cmdline = (char *)kernel_cmdline; } linux_boot = (kernel_filename != NULL); if (!linux_boot && *kernel_cmdline != '\0') { error_report("-append only allowed with -kernel option"); exit(1); } if (!linux_boot && initrd_filename != NULL) { error_report("-initrd only allowed with -kernel option"); exit(1); } if (semihosting_enabled() && !semihosting_get_argc() && kernel_filename) { /* fall back to the -kernel/-append */ semihosting_arg_fallback(kernel_filename, kernel_cmdline); } /* spice needs the timers to be initialized by this point */ qemu_spice_init(); cpu_ticks_init(); if (default_net) { QemuOptsList *net = qemu_find_opts("net"); qemu_opts_set(net, NULL, "type", "nic", &error_abort); #ifdef CONFIG_SLIRP qemu_opts_set(net, NULL, "type", "user", &error_abort); #endif } if (net_init_clients(&err) < 0) { error_report_err(err); exit(1); } qemu_opts_foreach(qemu_find_opts("object"), user_creatable_add_opts_foreach, object_create_delayed, &error_fatal); tpm_init(); blk_mig_init(); ram_mig_init(); dirty_bitmap_mig_init(); qemu_opts_foreach(qemu_find_opts("mon"), mon_init_func, NULL, &error_fatal); /* connect semihosting console input if requested */ qemu_semihosting_console_init(); if (foreach_device_config(DEV_SERIAL, serial_parse) < 0) exit(1); if (foreach_device_config(DEV_PARALLEL, parallel_parse) < 0) exit(1); if (foreach_device_config(DEV_DEBUGCON, debugcon_parse) < 0) exit(1); /* If no default VGA is requested, the default is "none". */ if (default_vga) { vga_model = get_default_vga_model(machine_class); } if (vga_model) { select_vgahw(machine_class, vga_model); } if (watchdog) { i = select_watchdog(watchdog); if (i > 0) exit (i == 1 ? 1 : 0); } /* This checkpoint is required by replay to separate prior clock reading from the other reads, because timer polling functions query clock values from the log. */ replay_checkpoint(CHECKPOINT_INIT); qdev_machine_init(); current_machine->boot_order = boot_order; /* parse features once if machine provides default cpu_type */ current_machine->cpu_type = machine_class->default_cpu_type; if (cpu_option) { current_machine->cpu_type = parse_cpu_option(cpu_option); } if (current_machine->ram_memdev_id) { Object *backend; ram_addr_t backend_size; backend = object_resolve_path_type(current_machine->ram_memdev_id, TYPE_MEMORY_BACKEND, NULL); if (!backend) { error_report("Memory backend '%s' not found", current_machine->ram_memdev_id); exit(EXIT_FAILURE); } backend_size = object_property_get_uint(backend, "size", &error_abort); if (have_custom_ram_size && backend_size != ram_size) { error_report("Size specified by -m option must match size of " "explicitly specified 'memory-backend' property"); exit(EXIT_FAILURE); } ram_size = backend_size; } if (!xen_enabled()) { /* On 32-bit hosts, QEMU is limited by virtual address space */ if (ram_size > (2047 << 20) && HOST_LONG_BITS == 32) { error_report("at most 2047 MB RAM can be simulated"); exit(1); } } parse_numa_opts(current_machine); if (machine_class->default_ram_id && current_machine->ram_size && numa_uses_legacy_mem() && !current_machine->ram_memdev_id) { create_default_memdev(current_machine, mem_path); } /* do monitor/qmp handling at preconfig state if requested */ qemu_main_loop(); audio_init_audiodevs(); /* from here on runstate is RUN_STATE_PRELAUNCH */ machine_run_board_init(current_machine); realtime_init(); soundhw_init(); if (hax_enabled()) { hax_sync_vcpus(); } qemu_opts_foreach(qemu_find_opts("fw_cfg"), parse_fw_cfg, fw_cfg_find(), &error_fatal); /* init USB devices */ if (machine_usb(current_machine)) { if (foreach_device_config(DEV_USB, usb_parse) < 0) exit(1); } /* init generic devices */ rom_set_order_override(FW_CFG_ORDER_OVERRIDE_DEVICE); qemu_opts_foreach(qemu_find_opts("device"), device_init_func, NULL, &error_fatal); cpu_synchronize_all_post_init(); rom_reset_order_override(); /* Did we create any drives that we failed to create a device for? */ drive_check_orphaned(); /* Don't warn about the default network setup that you get if * no command line -net or -netdev options are specified. There * are two cases that we would otherwise complain about: * (1) board doesn't support a NIC but the implicit "-net nic" * requested one * (2) CONFIG_SLIRP not set, in which case the implicit "-net nic" * sets up a nic that isn't connected to anything. */ if (!default_net && (!qtest_enabled() || has_defaults)) { net_check_clients(); } if (boot_once) { qemu_boot_set(boot_once, &error_fatal); qemu_register_reset(restore_boot_order, g_strdup(boot_order)); } /* init local displays */ ds = init_displaystate(); qemu_display_init(ds, &dpy); /* must be after terminal init, SDL library changes signal handlers */ os_setup_signal_handling(); /* init remote displays */ #ifdef CONFIG_VNC qemu_opts_foreach(qemu_find_opts("vnc"), vnc_init_func, NULL, &error_fatal); #endif if (using_spice) { qemu_spice_display_init(); } if (foreach_device_config(DEV_GDB, gdbserver_start) < 0) { exit(1); } qdev_machine_creation_done(); /* TODO: once all bus devices are qdevified, this should be done * when bus is created by qdev.c */ /* * TODO: If we had a main 'reset container' that the whole system * lived in, we could reset that using the multi-phase reset * APIs. For the moment, we just reset the sysbus, which will cause * all devices hanging off it (and all their child buses, recursively) * to be reset. Note that this will *not* reset any Device objects * which are not attached to some part of the qbus tree! */ qemu_register_reset(resettable_cold_reset_fn, sysbus_get_default()); qemu_run_machine_init_done_notifiers(); if (rom_check_and_register_reset() != 0) { error_report("rom check and register reset failed"); exit(1); } replay_start(); /* This checkpoint is required by replay to separate prior clock reading from the other reads, because timer polling functions query clock values from the log. */ replay_checkpoint(CHECKPOINT_RESET); qemu_system_reset(SHUTDOWN_CAUSE_NONE); register_global_state(); if (loadvm) { Error *local_err = NULL; if (load_snapshot(loadvm, &local_err) < 0) { error_report_err(local_err); autostart = 0; exit(1); } } if (replay_mode != REPLAY_MODE_NONE) { replay_vmstate_init(); } qdev_prop_check_globals(); if (vmstate_dump_file) { /* dump and exit */ dump_vmstate_json_to_file(vmstate_dump_file); exit(0); } if (incoming) { Error *local_err = NULL; qemu_start_incoming_migration(incoming, &local_err); if (local_err) { error_reportf_err(local_err, "-incoming %s: ", incoming); exit(1); } } else if (autostart) { vm_start(); } accel_setup_post(current_machine); os_setup_post(); return; } void qemu_cleanup(void) { gdbserver_cleanup(); /* * cleaning up the migration object cancels any existing migration * try to do this early so that it also stops using devices. */ migration_shutdown(); /* * We must cancel all block jobs while the block layer is drained, * or cancelling will be affected by throttling and thus may block * for an extended period of time. * vm_shutdown() will bdrv_drain_all(), so we may as well include * it in the drained section. * We do not need to end this section, because we do not want any * requests happening from here on anyway. */ bdrv_drain_all_begin(); /* No more vcpu or device emulation activity beyond this point */ vm_shutdown(); replay_finish(); job_cancel_sync_all(); bdrv_close_all(); res_free(); /* vhost-user must be cleaned up before chardevs. */ tpm_cleanup(); net_cleanup(); audio_cleanup(); monitor_cleanup(); qemu_chr_cleanup(); user_creatable_cleanup(); /* TODO: unref root container, check all devices are ok */ }