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qemu-e2k/vl.c
Alexander Graf c317728872 Make cache=unsafe the default for -snapshot 
When using -snapshot we don't care about data integrity of the cow file
at all, so let's disable flushing there and squeeze out the last drop
of performance we could possibly get.

Signed-off-by: Alexander Graf <agraf@suse.de>
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
2010-05-27 00:08:09 +02:00

3905 lines
105 KiB
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/*
* QEMU System Emulator
*
* Copyright (c) 2003-2008 Fabrice Bellard
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
#include <unistd.h>
#include <fcntl.h>
#include <signal.h>
#include <time.h>
#include <errno.h>
#include <sys/time.h>
#include <zlib.h>
/* Needed early for CONFIG_BSD etc. */
#include "config-host.h"
#ifndef _WIN32
#include <libgen.h>
#include <pwd.h>
#include <sys/times.h>
#include <sys/wait.h>
#include <termios.h>
#include <sys/mman.h>
#include <sys/ioctl.h>
#include <sys/resource.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <net/if.h>
#include <arpa/inet.h>
#include <dirent.h>
#include <netdb.h>
#include <sys/select.h>
#ifdef CONFIG_BSD
#include <sys/stat.h>
#if defined(__FreeBSD__) || defined(__FreeBSD_kernel__) || defined(__DragonFly__)
#include <libutil.h>
#include <sys/sysctl.h>
#else
#include <util.h>
#endif
#else
#ifdef __linux__
#include <pty.h>
#include <malloc.h>
#include <sys/prctl.h>
#include <linux/ppdev.h>
#include <linux/parport.h>
#endif
#ifdef __sun__
#include <sys/stat.h>
#include <sys/ethernet.h>
#include <sys/sockio.h>
#include <netinet/arp.h>
#include <netinet/in.h>
#include <netinet/in_systm.h>
#include <netinet/ip.h>
#include <netinet/ip_icmp.h> // must come after ip.h
#include <netinet/udp.h>
#include <netinet/tcp.h>
#include <net/if.h>
#include <syslog.h>
#include <stropts.h>
/* See MySQL bug #7156 (http://bugs.mysql.com/bug.php?id=7156) for
discussion about Solaris header problems */
extern int madvise(caddr_t, size_t, int);
#endif
#endif
#endif
#if defined(__OpenBSD__)
#include <util.h>
#endif
#if defined(CONFIG_VDE)
#include <libvdeplug.h>
#endif
#ifdef _WIN32
#include <windows.h>
#endif
#ifdef CONFIG_SDL
#if defined(__APPLE__) || defined(main)
#include <SDL.h>
int qemu_main(int argc, char **argv, char **envp);
int main(int argc, char **argv)
{
return qemu_main(argc, argv, NULL);
}
#undef main
#define main qemu_main
#endif
#endif /* CONFIG_SDL */
#ifdef CONFIG_COCOA
#undef main
#define main qemu_main
#endif /* CONFIG_COCOA */
#include "hw/hw.h"
#include "hw/boards.h"
#include "hw/usb.h"
#include "hw/pcmcia.h"
#include "hw/pc.h"
#include "hw/isa.h"
#include "hw/baum.h"
#include "hw/bt.h"
#include "hw/watchdog.h"
#include "hw/smbios.h"
#include "hw/xen.h"
#include "hw/qdev.h"
#include "hw/loader.h"
#include "bt-host.h"
#include "net.h"
#include "net/slirp.h"
#include "monitor.h"
#include "console.h"
#include "sysemu.h"
#include "gdbstub.h"
#include "qemu-timer.h"
#include "qemu-char.h"
#include "cache-utils.h"
#include "block.h"
#include "block_int.h"
#include "block-migration.h"
#include "dma.h"
#include "audio/audio.h"
#include "migration.h"
#include "kvm.h"
#include "qemu-option.h"
#include "qemu-config.h"
#include "qemu-objects.h"
#ifdef CONFIG_LINUX
#include "fsdev/qemu-fsdev.h"
#endif
#include "disas.h"
#include "qemu_socket.h"
#include "slirp/libslirp.h"
#include "qemu-queue.h"
#include "cpus.h"
#include "arch_init.h"
//#define DEBUG_NET
//#define DEBUG_SLIRP
#define DEFAULT_RAM_SIZE 128
#define MAX_VIRTIO_CONSOLES 1
static const char *data_dir;
const char *bios_name = NULL;
/* Note: drives_table[MAX_DRIVES] is a dummy block driver if none available
to store the VM snapshots */
struct drivelist drives = QTAILQ_HEAD_INITIALIZER(drives);
struct driveoptlist driveopts = QTAILQ_HEAD_INITIALIZER(driveopts);
enum vga_retrace_method vga_retrace_method = VGA_RETRACE_DUMB;
DisplayType display_type = DT_DEFAULT;
const char* keyboard_layout = NULL;
ram_addr_t ram_size;
const char *mem_path = NULL;
#ifdef MAP_POPULATE
int mem_prealloc = 0; /* force preallocation of physical target memory */
#endif
int nb_nics;
NICInfo nd_table[MAX_NICS];
int vm_running;
int autostart;
static int rtc_utc = 1;
static int rtc_date_offset = -1; /* -1 means no change */
QEMUClock *rtc_clock;
int vga_interface_type = VGA_NONE;
static int full_screen = 0;
#ifdef CONFIG_SDL
static int no_frame = 0;
#endif
int no_quit = 0;
CharDriverState *serial_hds[MAX_SERIAL_PORTS];
CharDriverState *parallel_hds[MAX_PARALLEL_PORTS];
CharDriverState *virtcon_hds[MAX_VIRTIO_CONSOLES];
int win2k_install_hack = 0;
int rtc_td_hack = 0;
int usb_enabled = 0;
int singlestep = 0;
int smp_cpus = 1;
int max_cpus = 0;
int smp_cores = 1;
int smp_threads = 1;
const char *vnc_display;
int acpi_enabled = 1;
int no_hpet = 0;
int fd_bootchk = 1;
int no_reboot = 0;
int no_shutdown = 0;
int cursor_hide = 1;
int graphic_rotate = 0;
uint8_t irq0override = 1;
#ifndef _WIN32
int daemonize = 0;
#endif
const char *watchdog;
const char *option_rom[MAX_OPTION_ROMS];
int nb_option_roms;
int semihosting_enabled = 0;
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;
int nb_numa_nodes;
uint64_t node_mem[MAX_NODES];
uint64_t node_cpumask[MAX_NODES];
static QEMUTimer *nographic_timer;
uint8_t qemu_uuid[16];
static QEMUBootSetHandler *boot_set_handler;
static void *boot_set_opaque;
int kvm_allowed = 0;
uint32_t xen_domid;
enum xen_mode xen_mode = XEN_EMULATE;
static int default_serial = 1;
static int default_parallel = 1;
static int default_virtcon = 1;
static int default_monitor = 1;
static int default_vga = 1;
static int default_floppy = 1;
static int default_cdrom = 1;
static int default_sdcard = 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 = "ide-drive", .flag = &default_cdrom },
{ .driver = "virtio-serial-pci", .flag = &default_virtcon },
{ .driver = "virtio-serial-s390", .flag = &default_virtcon },
{ .driver = "virtio-serial", .flag = &default_virtcon },
{ .driver = "VGA", .flag = &default_vga },
{ .driver = "cirrus-vga", .flag = &default_vga },
{ .driver = "vmware-svga", .flag = &default_vga },
};
static int default_driver_check(QemuOpts *opts, void *opaque)
{
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;
}
/***********************************************************/
static void set_proc_name(const char *s)
{
#if defined(__linux__) && defined(PR_SET_NAME)
char name[16];
if (!s)
return;
name[sizeof(name) - 1] = 0;
strncpy(name, s, sizeof(name));
/* Could rewrite argv[0] too, but that's a bit more complicated.
This simple way is enough for `top'. */
prctl(PR_SET_NAME, name);
#endif
}
/***********************************************************/
/* real time host monotonic timer */
/* compute with 96 bit intermediate result: (a*b)/c */
uint64_t muldiv64(uint64_t a, uint32_t b, uint32_t c)
{
union {
uint64_t ll;
struct {
#ifdef HOST_WORDS_BIGENDIAN
uint32_t high, low;
#else
uint32_t low, high;
#endif
} l;
} u, res;
uint64_t rl, rh;
u.ll = a;
rl = (uint64_t)u.l.low * (uint64_t)b;
rh = (uint64_t)u.l.high * (uint64_t)b;
rh += (rl >> 32);
res.l.high = rh / c;
res.l.low = (((rh % c) << 32) + (rl & 0xffffffff)) / c;
return res.ll;
}
/***********************************************************/
/* host time/date access */
void qemu_get_timedate(struct tm *tm, int offset)
{
time_t ti;
struct tm *ret;
time(&ti);
ti += offset;
if (rtc_date_offset == -1) {
if (rtc_utc)
ret = gmtime(&ti);
else
ret = localtime(&ti);
} else {
ti -= rtc_date_offset;
ret = gmtime(&ti);
}
memcpy(tm, ret, sizeof(struct tm));
}
int qemu_timedate_diff(struct tm *tm)
{
time_t seconds;
if (rtc_date_offset == -1)
if (rtc_utc)
seconds = mktimegm(tm);
else
seconds = mktime(tm);
else
seconds = mktimegm(tm) + rtc_date_offset;
return seconds - time(NULL);
}
void rtc_change_mon_event(struct tm *tm)
{
QObject *data;
data = qobject_from_jsonf("{ 'offset': %d }", qemu_timedate_diff(tm));
monitor_protocol_event(QEVENT_RTC_CHANGE, data);
qobject_decref(data);
}
static void configure_rtc_date_offset(const char *startdate, int legacy)
{
time_t rtc_start_date;
struct tm tm;
if (!strcmp(startdate, "now") && legacy) {
rtc_date_offset = -1;
} else {
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_date = mktimegm(&tm);
if (rtc_start_date == -1) {
date_fail:
fprintf(stderr, "Invalid date format. Valid formats are:\n"
"'2006-06-17T16:01:21' or '2006-06-17'\n");
exit(1);
}
rtc_date_offset = time(NULL) - rtc_start_date;
}
}
static void configure_rtc(QemuOpts *opts)
{
const char *value;
value = qemu_opt_get(opts, "base");
if (value) {
if (!strcmp(value, "utc")) {
rtc_utc = 1;
} else if (!strcmp(value, "localtime")) {
rtc_utc = 0;
} else {
configure_rtc_date_offset(value, 0);
}
}
value = qemu_opt_get(opts, "clock");
if (value) {
if (!strcmp(value, "host")) {
rtc_clock = host_clock;
} else if (!strcmp(value, "vm")) {
rtc_clock = vm_clock;
} else {
fprintf(stderr, "qemu: invalid option value '%s'\n", value);
exit(1);
}
}
value = qemu_opt_get(opts, "driftfix");
if (value) {
if (!strcmp(value, "slew")) {
rtc_td_hack = 1;
} else if (!strcmp(value, "none")) {
rtc_td_hack = 0;
} else {
fprintf(stderr, "qemu: invalid option value '%s'\n", value);
exit(1);
}
}
}
/***********************************************************/
/* Bluetooth support */
static int nb_hcis;
static int cur_hci;
static struct HCIInfo *hci_table[MAX_NICS];
static struct bt_vlan_s {
struct bt_scatternet_s net;
int id;
struct bt_vlan_s *next;
} *first_bt_vlan;
/* find or alloc a new bluetooth "VLAN" */
static struct bt_scatternet_s *qemu_find_bt_vlan(int id)
{
struct bt_vlan_s **pvlan, *vlan;
for (vlan = first_bt_vlan; vlan != NULL; vlan = vlan->next) {
if (vlan->id == id)
return &vlan->net;
}
vlan = qemu_mallocz(sizeof(struct bt_vlan_s));
vlan->id = id;
pvlan = &first_bt_vlan;
while (*pvlan != NULL)
pvlan = &(*pvlan)->next;
*pvlan = vlan;
return &vlan->net;
}
static void null_hci_send(struct HCIInfo *hci, const uint8_t *data, int len)
{
}
static int null_hci_addr_set(struct HCIInfo *hci, const uint8_t *bd_addr)
{
return -ENOTSUP;
}
static struct HCIInfo null_hci = {
.cmd_send = null_hci_send,
.sco_send = null_hci_send,
.acl_send = null_hci_send,
.bdaddr_set = null_hci_addr_set,
};
struct HCIInfo *qemu_next_hci(void)
{
if (cur_hci == nb_hcis)
return &null_hci;
return hci_table[cur_hci++];
}
static struct HCIInfo *hci_init(const char *str)
{
char *endp;
struct bt_scatternet_s *vlan = 0;
if (!strcmp(str, "null"))
/* null */
return &null_hci;
else if (!strncmp(str, "host", 4) && (str[4] == '\0' || str[4] == ':'))
/* host[:hciN] */
return bt_host_hci(str[4] ? str + 5 : "hci0");
else if (!strncmp(str, "hci", 3)) {
/* hci[,vlan=n] */
if (str[3]) {
if (!strncmp(str + 3, ",vlan=", 6)) {
vlan = qemu_find_bt_vlan(strtol(str + 9, &endp, 0));
if (*endp)
vlan = 0;
}
} else
vlan = qemu_find_bt_vlan(0);
if (vlan)
return bt_new_hci(vlan);
}
fprintf(stderr, "qemu: Unknown bluetooth HCI `%s'.\n", str);
return 0;
}
static int bt_hci_parse(const char *str)
{
struct HCIInfo *hci;
bdaddr_t bdaddr;
if (nb_hcis >= MAX_NICS) {
fprintf(stderr, "qemu: Too many bluetooth HCIs (max %i).\n", MAX_NICS);
return -1;
}
hci = hci_init(str);
if (!hci)
return -1;
bdaddr.b[0] = 0x52;
bdaddr.b[1] = 0x54;
bdaddr.b[2] = 0x00;
bdaddr.b[3] = 0x12;
bdaddr.b[4] = 0x34;
bdaddr.b[5] = 0x56 + nb_hcis;
hci->bdaddr_set(hci, bdaddr.b);
hci_table[nb_hcis++] = hci;
return 0;
}
static void bt_vhci_add(int vlan_id)
{
struct bt_scatternet_s *vlan = qemu_find_bt_vlan(vlan_id);
if (!vlan->slave)
fprintf(stderr, "qemu: warning: adding a VHCI to "
"an empty scatternet %i\n", vlan_id);
bt_vhci_init(bt_new_hci(vlan));
}
static struct bt_device_s *bt_device_add(const char *opt)
{
struct bt_scatternet_s *vlan;
int vlan_id = 0;
char *endp = strstr(opt, ",vlan=");
int len = (endp ? endp - opt : strlen(opt)) + 1;
char devname[10];
pstrcpy(devname, MIN(sizeof(devname), len), opt);
if (endp) {
vlan_id = strtol(endp + 6, &endp, 0);
if (*endp) {
fprintf(stderr, "qemu: unrecognised bluetooth vlan Id\n");
return 0;
}
}
vlan = qemu_find_bt_vlan(vlan_id);
if (!vlan->slave)
fprintf(stderr, "qemu: warning: adding a slave device to "
"an empty scatternet %i\n", vlan_id);
if (!strcmp(devname, "keyboard"))
return bt_keyboard_init(vlan);
fprintf(stderr, "qemu: unsupported bluetooth device `%s'\n", devname);
return 0;
}
static int bt_parse(const char *opt)
{
const char *endp, *p;
int vlan;
if (strstart(opt, "hci", &endp)) {
if (!*endp || *endp == ',') {
if (*endp)
if (!strstart(endp, ",vlan=", 0))
opt = endp + 1;
return bt_hci_parse(opt);
}
} else if (strstart(opt, "vhci", &endp)) {
if (!*endp || *endp == ',') {
if (*endp) {
if (strstart(endp, ",vlan=", &p)) {
vlan = strtol(p, (char **) &endp, 0);
if (*endp) {
fprintf(stderr, "qemu: bad scatternet '%s'\n", p);
return 1;
}
} else {
fprintf(stderr, "qemu: bad parameter '%s'\n", endp + 1);
return 1;
}
} else
vlan = 0;
bt_vhci_add(vlan);
return 0;
}
} else if (strstart(opt, "device:", &endp))
return !bt_device_add(endp);
fprintf(stderr, "qemu: bad bluetooth parameter '%s'\n", opt);
return 1;
}
/***********************************************************/
/* QEMU Block devices */
#define HD_ALIAS "index=%d,media=disk"
#define CDROM_ALIAS "index=2,media=cdrom"
#define FD_ALIAS "index=%d,if=floppy"
#define PFLASH_ALIAS "if=pflash"
#define MTD_ALIAS "if=mtd"
#define SD_ALIAS "index=0,if=sd"
QemuOpts *drive_add(const char *file, const char *fmt, ...)
{
va_list ap;
char optstr[1024];
QemuOpts *opts;
va_start(ap, fmt);
vsnprintf(optstr, sizeof(optstr), fmt, ap);
va_end(ap);
opts = qemu_opts_parse(&qemu_drive_opts, optstr, 0);
if (!opts) {
return NULL;
}
if (file)
qemu_opt_set(opts, "file", file);
return opts;
}
DriveInfo *drive_get(BlockInterfaceType type, int bus, int unit)
{
DriveInfo *dinfo;
/* seek interface, bus and unit */
QTAILQ_FOREACH(dinfo, &drives, next) {
if (dinfo->type == type &&
dinfo->bus == bus &&
dinfo->unit == unit)
return dinfo;
}
return NULL;
}
DriveInfo *drive_get_by_id(const char *id)
{
DriveInfo *dinfo;
QTAILQ_FOREACH(dinfo, &drives, next) {
if (strcmp(id, dinfo->id))
continue;
return dinfo;
}
return NULL;
}
int drive_get_max_bus(BlockInterfaceType type)
{
int max_bus;
DriveInfo *dinfo;
max_bus = -1;
QTAILQ_FOREACH(dinfo, &drives, next) {
if(dinfo->type == type &&
dinfo->bus > max_bus)
max_bus = dinfo->bus;
}
return max_bus;
}
const char *drive_get_serial(BlockDriverState *bdrv)
{
DriveInfo *dinfo;
QTAILQ_FOREACH(dinfo, &drives, next) {
if (dinfo->bdrv == bdrv)
return dinfo->serial;
}
return "\0";
}
BlockInterfaceErrorAction drive_get_on_error(
BlockDriverState *bdrv, int is_read)
{
DriveInfo *dinfo;
QTAILQ_FOREACH(dinfo, &drives, next) {
if (dinfo->bdrv == bdrv)
return is_read ? dinfo->on_read_error : dinfo->on_write_error;
}
return is_read ? BLOCK_ERR_REPORT : BLOCK_ERR_STOP_ENOSPC;
}
static void bdrv_format_print(void *opaque, const char *name)
{
fprintf(stderr, " %s", name);
}
void drive_uninit(DriveInfo *dinfo)
{
qemu_opts_del(dinfo->opts);
bdrv_delete(dinfo->bdrv);
QTAILQ_REMOVE(&drives, dinfo, next);
qemu_free(dinfo);
}
static int parse_block_error_action(const char *buf, int is_read)
{
if (!strcmp(buf, "ignore")) {
return BLOCK_ERR_IGNORE;
} else if (!is_read && !strcmp(buf, "enospc")) {
return BLOCK_ERR_STOP_ENOSPC;
} else if (!strcmp(buf, "stop")) {
return BLOCK_ERR_STOP_ANY;
} else if (!strcmp(buf, "report")) {
return BLOCK_ERR_REPORT;
} else {
fprintf(stderr, "qemu: '%s' invalid %s error action\n",
buf, is_read ? "read" : "write");
return -1;
}
}
DriveInfo *drive_init(QemuOpts *opts, void *opaque,
int *fatal_error)
{
const char *buf;
const char *file = NULL;
char devname[128];
const char *serial;
const char *mediastr = "";
BlockInterfaceType type;
enum { MEDIA_DISK, MEDIA_CDROM } media;
int bus_id, unit_id;
int cyls, heads, secs, translation;
BlockDriver *drv = NULL;
QEMUMachine *machine = opaque;
int max_devs;
int index;
int ro = 0;
int bdrv_flags = 0;
int on_read_error, on_write_error;
const char *devaddr;
DriveInfo *dinfo;
int snapshot = 0;
*fatal_error = 1;
translation = BIOS_ATA_TRANSLATION_AUTO;
if (machine && machine->use_scsi) {
type = IF_SCSI;
max_devs = MAX_SCSI_DEVS;
pstrcpy(devname, sizeof(devname), "scsi");
} else {
type = IF_IDE;
max_devs = MAX_IDE_DEVS;
pstrcpy(devname, sizeof(devname), "ide");
}
media = MEDIA_DISK;
/* extract parameters */
bus_id = qemu_opt_get_number(opts, "bus", 0);
unit_id = qemu_opt_get_number(opts, "unit", -1);
index = qemu_opt_get_number(opts, "index", -1);
cyls = qemu_opt_get_number(opts, "cyls", 0);
heads = qemu_opt_get_number(opts, "heads", 0);
secs = qemu_opt_get_number(opts, "secs", 0);
snapshot = qemu_opt_get_bool(opts, "snapshot", 0);
ro = qemu_opt_get_bool(opts, "readonly", 0);
file = qemu_opt_get(opts, "file");
serial = qemu_opt_get(opts, "serial");
if ((buf = qemu_opt_get(opts, "if")) != NULL) {
pstrcpy(devname, sizeof(devname), buf);
if (!strcmp(buf, "ide")) {
type = IF_IDE;
max_devs = MAX_IDE_DEVS;
} else if (!strcmp(buf, "scsi")) {
type = IF_SCSI;
max_devs = MAX_SCSI_DEVS;
} else if (!strcmp(buf, "floppy")) {
type = IF_FLOPPY;
max_devs = 0;
} else if (!strcmp(buf, "pflash")) {
type = IF_PFLASH;
max_devs = 0;
} else if (!strcmp(buf, "mtd")) {
type = IF_MTD;
max_devs = 0;
} else if (!strcmp(buf, "sd")) {
type = IF_SD;
max_devs = 0;
} else if (!strcmp(buf, "virtio")) {
type = IF_VIRTIO;
max_devs = 0;
} else if (!strcmp(buf, "xen")) {
type = IF_XEN;
max_devs = 0;
} else if (!strcmp(buf, "none")) {
type = IF_NONE;
max_devs = 0;
} else {
fprintf(stderr, "qemu: unsupported bus type '%s'\n", buf);
return NULL;
}
}
if (cyls || heads || secs) {
if (cyls < 1 || (type == IF_IDE && cyls > 16383)) {
fprintf(stderr, "qemu: '%s' invalid physical cyls number\n", buf);
return NULL;
}
if (heads < 1 || (type == IF_IDE && heads > 16)) {
fprintf(stderr, "qemu: '%s' invalid physical heads number\n", buf);
return NULL;
}
if (secs < 1 || (type == IF_IDE && secs > 63)) {
fprintf(stderr, "qemu: '%s' invalid physical secs number\n", buf);
return NULL;
}
}
if ((buf = qemu_opt_get(opts, "trans")) != NULL) {
if (!cyls) {
fprintf(stderr,
"qemu: '%s' trans must be used with cyls,heads and secs\n",
buf);
return NULL;
}
if (!strcmp(buf, "none"))
translation = BIOS_ATA_TRANSLATION_NONE;
else if (!strcmp(buf, "lba"))
translation = BIOS_ATA_TRANSLATION_LBA;
else if (!strcmp(buf, "auto"))
translation = BIOS_ATA_TRANSLATION_AUTO;
else {
fprintf(stderr, "qemu: '%s' invalid translation type\n", buf);
return NULL;
}
}
if ((buf = qemu_opt_get(opts, "media")) != NULL) {
if (!strcmp(buf, "disk")) {
media = MEDIA_DISK;
} else if (!strcmp(buf, "cdrom")) {
if (cyls || secs || heads) {
fprintf(stderr,
"qemu: '%s' invalid physical CHS format\n", buf);
return NULL;
}
media = MEDIA_CDROM;
} else {
fprintf(stderr, "qemu: '%s' invalid media\n", buf);
return NULL;
}
}
if ((buf = qemu_opt_get(opts, "cache")) != NULL) {
if (!strcmp(buf, "off") || !strcmp(buf, "none")) {
bdrv_flags |= BDRV_O_NOCACHE;
} else if (!strcmp(buf, "writeback")) {
bdrv_flags |= BDRV_O_CACHE_WB;
} else if (!strcmp(buf, "unsafe")) {
bdrv_flags |= BDRV_O_CACHE_WB;
bdrv_flags |= BDRV_O_NO_FLUSH;
} else if (!strcmp(buf, "writethrough")) {
/* this is the default */
} else {
fprintf(stderr, "qemu: invalid cache option\n");
return NULL;
}
}
#ifdef CONFIG_LINUX_AIO
if ((buf = qemu_opt_get(opts, "aio")) != NULL) {
if (!strcmp(buf, "native")) {
bdrv_flags |= BDRV_O_NATIVE_AIO;
} else if (!strcmp(buf, "threads")) {
/* this is the default */
} else {
fprintf(stderr, "qemu: invalid aio option\n");
return NULL;
}
}
#endif
if ((buf = qemu_opt_get(opts, "format")) != NULL) {
if (strcmp(buf, "?") == 0) {
fprintf(stderr, "qemu: Supported formats:");
bdrv_iterate_format(bdrv_format_print, NULL);
fprintf(stderr, "\n");
return NULL;
}
drv = bdrv_find_whitelisted_format(buf);
if (!drv) {
fprintf(stderr, "qemu: '%s' invalid format\n", buf);
return NULL;
}
}
on_write_error = BLOCK_ERR_STOP_ENOSPC;
if ((buf = qemu_opt_get(opts, "werror")) != NULL) {
if (type != IF_IDE && type != IF_SCSI && type != IF_VIRTIO) {
fprintf(stderr, "werror is no supported by this format\n");
return NULL;
}
on_write_error = parse_block_error_action(buf, 0);
if (on_write_error < 0) {
return NULL;
}
}
on_read_error = BLOCK_ERR_REPORT;
if ((buf = qemu_opt_get(opts, "rerror")) != NULL) {
if (type != IF_IDE && type != IF_VIRTIO) {
fprintf(stderr, "rerror is no supported by this format\n");
return NULL;
}
on_read_error = parse_block_error_action(buf, 1);
if (on_read_error < 0) {
return NULL;
}
}
if ((devaddr = qemu_opt_get(opts, "addr")) != NULL) {
if (type != IF_VIRTIO) {
fprintf(stderr, "addr is not supported\n");
return NULL;
}
}
/* compute bus and unit according index */
if (index != -1) {
if (bus_id != 0 || unit_id != -1) {
fprintf(stderr,
"qemu: index cannot be used with bus and unit\n");
return NULL;
}
if (max_devs == 0)
{
unit_id = index;
bus_id = 0;
} else {
unit_id = index % max_devs;
bus_id = index / max_devs;
}
}
/* if user doesn't specify a unit_id,
* try to find the first free
*/
if (unit_id == -1) {
unit_id = 0;
while (drive_get(type, bus_id, unit_id) != NULL) {
unit_id++;
if (max_devs && unit_id >= max_devs) {
unit_id -= max_devs;
bus_id++;
}
}
}
/* check unit id */
if (max_devs && unit_id >= max_devs) {
fprintf(stderr, "qemu: unit %d too big (max is %d)\n",
unit_id, max_devs - 1);
return NULL;
}
/*
* ignore multiple definitions
*/
if (drive_get(type, bus_id, unit_id) != NULL) {
*fatal_error = 0;
return NULL;
}
/* init */
dinfo = qemu_mallocz(sizeof(*dinfo));
if ((buf = qemu_opts_id(opts)) != NULL) {
dinfo->id = qemu_strdup(buf);
} else {
/* no id supplied -> create one */
dinfo->id = qemu_mallocz(32);
if (type == IF_IDE || type == IF_SCSI)
mediastr = (media == MEDIA_CDROM) ? "-cd" : "-hd";
if (max_devs)
snprintf(dinfo->id, 32, "%s%i%s%i",
devname, bus_id, mediastr, unit_id);
else
snprintf(dinfo->id, 32, "%s%s%i",
devname, mediastr, unit_id);
}
dinfo->bdrv = bdrv_new(dinfo->id);
dinfo->devaddr = devaddr;
dinfo->type = type;
dinfo->bus = bus_id;
dinfo->unit = unit_id;
dinfo->on_read_error = on_read_error;
dinfo->on_write_error = on_write_error;
dinfo->opts = opts;
if (serial)
strncpy(dinfo->serial, serial, sizeof(serial));
QTAILQ_INSERT_TAIL(&drives, dinfo, next);
switch(type) {
case IF_IDE:
case IF_SCSI:
case IF_XEN:
case IF_NONE:
switch(media) {
case MEDIA_DISK:
if (cyls != 0) {
bdrv_set_geometry_hint(dinfo->bdrv, cyls, heads, secs);
bdrv_set_translation_hint(dinfo->bdrv, translation);
}
break;
case MEDIA_CDROM:
bdrv_set_type_hint(dinfo->bdrv, BDRV_TYPE_CDROM);
break;
}
break;
case IF_SD:
/* FIXME: This isn't really a floppy, but it's a reasonable
approximation. */
case IF_FLOPPY:
bdrv_set_type_hint(dinfo->bdrv, BDRV_TYPE_FLOPPY);
break;
case IF_PFLASH:
case IF_MTD:
break;
case IF_VIRTIO:
/* add virtio block device */
opts = qemu_opts_create(&qemu_device_opts, NULL, 0);
qemu_opt_set(opts, "driver", "virtio-blk-pci");
qemu_opt_set(opts, "drive", dinfo->id);
if (devaddr)
qemu_opt_set(opts, "addr", devaddr);
break;
case IF_COUNT:
abort();
}
if (!file) {
*fatal_error = 0;
return NULL;
}
if (snapshot) {
/* always use cache=unsafe with snapshot */
bdrv_flags &= ~BDRV_O_CACHE_MASK;
bdrv_flags |= (BDRV_O_SNAPSHOT|BDRV_O_CACHE_WB|BDRV_O_NO_FLUSH);
}
if (media == MEDIA_CDROM) {
/* CDROM is fine for any interface, don't check. */
ro = 1;
} else if (ro == 1) {
if (type != IF_SCSI && type != IF_VIRTIO && type != IF_FLOPPY) {
fprintf(stderr, "qemu: readonly flag not supported for drive with this interface\n");
return NULL;
}
}
bdrv_flags |= ro ? 0 : BDRV_O_RDWR;
if (bdrv_open(dinfo->bdrv, file, bdrv_flags, drv) < 0) {
fprintf(stderr, "qemu: could not open disk image %s: %s\n",
file, strerror(errno));
return NULL;
}
if (bdrv_key_required(dinfo->bdrv))
autostart = 0;
*fatal_error = 0;
return dinfo;
}
static int drive_init_func(QemuOpts *opts, void *opaque)
{
QEMUMachine *machine = opaque;
int fatal_error = 0;
if (drive_init(opts, machine, &fatal_error) == NULL) {
if (fatal_error)
return 1;
}
return 0;
}
static int drive_enable_snapshot(QemuOpts *opts, void *opaque)
{
if (NULL == qemu_opt_get(opts, "snapshot")) {
qemu_opt_set(opts, "snapshot", "on");
}
return 0;
}
void qemu_register_boot_set(QEMUBootSetHandler *func, void *opaque)
{
boot_set_handler = func;
boot_set_opaque = opaque;
}
int qemu_boot_set(const char *boot_devices)
{
if (!boot_set_handler) {
return -EINVAL;
}
return boot_set_handler(boot_set_opaque, boot_devices);
}
static void validate_bootdevices(char *devices)
{
/* We just do some generic consistency checks */
const char *p;
int bitmap = 0;
for (p = devices; *p != '\0'; p++) {
/* Allowed boot devices are:
* a-b: floppy disk drives
* c-f: IDE disk drives
* g-m: machine implementation dependant drives
* n-p: network devices
* It's up to each machine implementation to check if the given boot
* devices match the actual hardware implementation and firmware
* features.
*/
if (*p < 'a' || *p > 'p') {
fprintf(stderr, "Invalid boot device '%c'\n", *p);
exit(1);
}
if (bitmap & (1 << (*p - 'a'))) {
fprintf(stderr, "Boot device '%c' was given twice\n", *p);
exit(1);
}
bitmap |= 1 << (*p - 'a');
}
}
static void restore_boot_devices(void *opaque)
{
char *standard_boot_devices = opaque;
static int first = 1;
/* Restore boot order and remove ourselves after the first boot */
if (first) {
first = 0;
return;
}
qemu_boot_set(standard_boot_devices);
qemu_unregister_reset(restore_boot_devices, standard_boot_devices);
qemu_free(standard_boot_devices);
}
static void numa_add(const char *optarg)
{
char option[128];
char *endptr;
unsigned long long value, endvalue;
int nodenr;
optarg = get_opt_name(option, 128, optarg, ',') + 1;
if (!strcmp(option, "node")) {
if (get_param_value(option, 128, "nodeid", optarg) == 0) {
nodenr = nb_numa_nodes;
} else {
nodenr = strtoull(option, NULL, 10);
}
if (get_param_value(option, 128, "mem", optarg) == 0) {
node_mem[nodenr] = 0;
} else {
value = strtoull(option, &endptr, 0);
switch (*endptr) {
case 0: case 'M': case 'm':
value <<= 20;
break;
case 'G': case 'g':
value <<= 30;
break;
}
node_mem[nodenr] = value;
}
if (get_param_value(option, 128, "cpus", optarg) == 0) {
node_cpumask[nodenr] = 0;
} else {
value = strtoull(option, &endptr, 10);
if (value >= 64) {
value = 63;
fprintf(stderr, "only 64 CPUs in NUMA mode supported.\n");
} else {
if (*endptr == '-') {
endvalue = strtoull(endptr+1, &endptr, 10);
if (endvalue >= 63) {
endvalue = 62;
fprintf(stderr,
"only 63 CPUs in NUMA mode supported.\n");
}
value = (2ULL << endvalue) - (1ULL << value);
} else {
value = 1ULL << value;
}
}
node_cpumask[nodenr] = value;
}
nb_numa_nodes++;
}
return;
}
static void smp_parse(const char *optarg)
{
int smp, sockets = 0, threads = 0, cores = 0;
char *endptr;
char option[128];
smp = strtoul(optarg, &endptr, 10);
if (endptr != optarg) {
if (*endptr == ',') {
endptr++;
}
}
if (get_param_value(option, 128, "sockets", endptr) != 0)
sockets = strtoull(option, NULL, 10);
if (get_param_value(option, 128, "cores", endptr) != 0)
cores = strtoull(option, NULL, 10);
if (get_param_value(option, 128, "threads", endptr) != 0)
threads = strtoull(option, NULL, 10);
if (get_param_value(option, 128, "maxcpus", endptr) != 0)
max_cpus = strtoull(option, NULL, 10);
/* compute missing values, prefer sockets over cores over threads */
if (smp == 0 || sockets == 0) {
sockets = sockets > 0 ? sockets : 1;
cores = cores > 0 ? cores : 1;
threads = threads > 0 ? threads : 1;
if (smp == 0) {
smp = cores * threads * sockets;
}
} else {
if (cores == 0) {
threads = threads > 0 ? threads : 1;
cores = smp / (sockets * threads);
} else {
if (sockets) {
threads = smp / (cores * sockets);
}
}
}
smp_cpus = smp;
smp_cores = cores > 0 ? cores : 1;
smp_threads = threads > 0 ? threads : 1;
if (max_cpus == 0)
max_cpus = smp_cpus;
}
/***********************************************************/
/* USB devices */
static int usb_device_add(const char *devname, int is_hotplug)
{
const char *p;
USBDevice *dev = NULL;
if (!usb_enabled)
return -1;
/* drivers with .usbdevice_name entry in USBDeviceInfo */
dev = usbdevice_create(devname);
if (dev)
goto done;
/* the other ones */
if (strstart(devname, "host:", &p)) {
dev = usb_host_device_open(p);
} else if (!strcmp(devname, "bt") || strstart(devname, "bt:", &p)) {
dev = usb_bt_init(devname[2] ? hci_init(p) :
bt_new_hci(qemu_find_bt_vlan(0)));
} else {
return -1;
}
if (!dev)
return -1;
done:
return 0;
}
static int usb_device_del(const char *devname)
{
int bus_num, addr;
const char *p;
if (strstart(devname, "host:", &p))
return usb_host_device_close(p);
if (!usb_enabled)
return -1;
p = strchr(devname, '.');
if (!p)
return -1;
bus_num = strtoul(devname, NULL, 0);
addr = strtoul(p + 1, NULL, 0);
return usb_device_delete_addr(bus_num, addr);
}
static int usb_parse(const char *cmdline)
{
int r;
r = usb_device_add(cmdline, 0);
if (r < 0) {
fprintf(stderr, "qemu: could not add USB device '%s'\n", cmdline);
}
return r;
}
void do_usb_add(Monitor *mon, const QDict *qdict)
{
const char *devname = qdict_get_str(qdict, "devname");
if (usb_device_add(devname, 1) < 0) {
error_report("could not add USB device '%s'", devname);
}
}
void do_usb_del(Monitor *mon, const QDict *qdict)
{
const char *devname = qdict_get_str(qdict, "devname");
if (usb_device_del(devname) < 0) {
error_report("could not delete USB device '%s'", devname);
}
}
/***********************************************************/
/* PCMCIA/Cardbus */
static struct pcmcia_socket_entry_s {
PCMCIASocket *socket;
struct pcmcia_socket_entry_s *next;
} *pcmcia_sockets = 0;
void pcmcia_socket_register(PCMCIASocket *socket)
{
struct pcmcia_socket_entry_s *entry;
entry = qemu_malloc(sizeof(struct pcmcia_socket_entry_s));
entry->socket = socket;
entry->next = pcmcia_sockets;
pcmcia_sockets = entry;
}
void pcmcia_socket_unregister(PCMCIASocket *socket)
{
struct pcmcia_socket_entry_s *entry, **ptr;
ptr = &pcmcia_sockets;
for (entry = *ptr; entry; ptr = &entry->next, entry = *ptr)
if (entry->socket == socket) {
*ptr = entry->next;
qemu_free(entry);
}
}
void pcmcia_info(Monitor *mon)
{
struct pcmcia_socket_entry_s *iter;
if (!pcmcia_sockets)
monitor_printf(mon, "No PCMCIA sockets\n");
for (iter = pcmcia_sockets; iter; iter = iter->next)
monitor_printf(mon, "%s: %s\n", iter->socket->slot_string,
iter->socket->attached ? iter->socket->card_string :
"Empty");
}
/***********************************************************/
/* I/O handling */
typedef struct IOHandlerRecord {
int fd;
IOCanReadHandler *fd_read_poll;
IOHandler *fd_read;
IOHandler *fd_write;
int deleted;
void *opaque;
/* temporary data */
struct pollfd *ufd;
QLIST_ENTRY(IOHandlerRecord) next;
} IOHandlerRecord;
static QLIST_HEAD(, IOHandlerRecord) io_handlers =
QLIST_HEAD_INITIALIZER(io_handlers);
/* XXX: fd_read_poll should be suppressed, but an API change is
necessary in the character devices to suppress fd_can_read(). */
int qemu_set_fd_handler2(int fd,
IOCanReadHandler *fd_read_poll,
IOHandler *fd_read,
IOHandler *fd_write,
void *opaque)
{
IOHandlerRecord *ioh;
if (!fd_read && !fd_write) {
QLIST_FOREACH(ioh, &io_handlers, next) {
if (ioh->fd == fd) {
ioh->deleted = 1;
break;
}
}
} else {
QLIST_FOREACH(ioh, &io_handlers, next) {
if (ioh->fd == fd)
goto found;
}
ioh = qemu_mallocz(sizeof(IOHandlerRecord));
QLIST_INSERT_HEAD(&io_handlers, ioh, next);
found:
ioh->fd = fd;
ioh->fd_read_poll = fd_read_poll;
ioh->fd_read = fd_read;
ioh->fd_write = fd_write;
ioh->opaque = opaque;
ioh->deleted = 0;
}
return 0;
}
int qemu_set_fd_handler(int fd,
IOHandler *fd_read,
IOHandler *fd_write,
void *opaque)
{
return qemu_set_fd_handler2(fd, NULL, fd_read, fd_write, opaque);
}
#ifdef _WIN32
/***********************************************************/
/* Polling handling */
typedef struct PollingEntry {
PollingFunc *func;
void *opaque;
struct PollingEntry *next;
} PollingEntry;
static PollingEntry *first_polling_entry;
int qemu_add_polling_cb(PollingFunc *func, void *opaque)
{
PollingEntry **ppe, *pe;
pe = qemu_mallocz(sizeof(PollingEntry));
pe->func = func;
pe->opaque = opaque;
for(ppe = &first_polling_entry; *ppe != NULL; ppe = &(*ppe)->next);
*ppe = pe;
return 0;
}
void qemu_del_polling_cb(PollingFunc *func, void *opaque)
{
PollingEntry **ppe, *pe;
for(ppe = &first_polling_entry; *ppe != NULL; ppe = &(*ppe)->next) {
pe = *ppe;
if (pe->func == func && pe->opaque == opaque) {
*ppe = pe->next;
qemu_free(pe);
break;
}
}
}
/***********************************************************/
/* Wait objects support */
typedef struct WaitObjects {
int num;
HANDLE events[MAXIMUM_WAIT_OBJECTS + 1];
WaitObjectFunc *func[MAXIMUM_WAIT_OBJECTS + 1];
void *opaque[MAXIMUM_WAIT_OBJECTS + 1];
} WaitObjects;
static WaitObjects wait_objects = {0};
int qemu_add_wait_object(HANDLE handle, WaitObjectFunc *func, void *opaque)
{
WaitObjects *w = &wait_objects;
if (w->num >= MAXIMUM_WAIT_OBJECTS)
return -1;
w->events[w->num] = handle;
w->func[w->num] = func;
w->opaque[w->num] = opaque;
w->num++;
return 0;
}
void qemu_del_wait_object(HANDLE handle, WaitObjectFunc *func, void *opaque)
{
int i, found;
WaitObjects *w = &wait_objects;
found = 0;
for (i = 0; i < w->num; i++) {
if (w->events[i] == handle)
found = 1;
if (found) {
w->events[i] = w->events[i + 1];
w->func[i] = w->func[i + 1];
w->opaque[i] = w->opaque[i + 1];
}
}
if (found)
w->num--;
}
#endif
/***********************************************************/
/* machine registration */
static QEMUMachine *first_machine = NULL;
QEMUMachine *current_machine = NULL;
int qemu_register_machine(QEMUMachine *m)
{
QEMUMachine **pm;
pm = &first_machine;
while (*pm != NULL)
pm = &(*pm)->next;
m->next = NULL;
*pm = m;
return 0;
}
static QEMUMachine *find_machine(const char *name)
{
QEMUMachine *m;
for(m = first_machine; m != NULL; m = m->next) {
if (!strcmp(m->name, name))
return m;
if (m->alias && !strcmp(m->alias, name))
return m;
}
return NULL;
}
static QEMUMachine *find_default_machine(void)
{
QEMUMachine *m;
for(m = first_machine; m != NULL; m = m->next) {
if (m->is_default) {
return m;
}
}
return NULL;
}
/***********************************************************/
/* main execution loop */
static void gui_update(void *opaque)
{
uint64_t interval = GUI_REFRESH_INTERVAL;
DisplayState *ds = opaque;
DisplayChangeListener *dcl = ds->listeners;
qemu_flush_coalesced_mmio_buffer();
dpy_refresh(ds);
while (dcl != NULL) {
if (dcl->gui_timer_interval &&
dcl->gui_timer_interval < interval)
interval = dcl->gui_timer_interval;
dcl = dcl->next;
}
qemu_mod_timer(ds->gui_timer, interval + qemu_get_clock(rt_clock));
}
static void nographic_update(void *opaque)
{
uint64_t interval = GUI_REFRESH_INTERVAL;
qemu_flush_coalesced_mmio_buffer();
qemu_mod_timer(nographic_timer, interval + qemu_get_clock(rt_clock));
}
struct vm_change_state_entry {
VMChangeStateHandler *cb;
void *opaque;
QLIST_ENTRY (vm_change_state_entry) entries;
};
static QLIST_HEAD(vm_change_state_head, vm_change_state_entry) vm_change_state_head;
VMChangeStateEntry *qemu_add_vm_change_state_handler(VMChangeStateHandler *cb,
void *opaque)
{
VMChangeStateEntry *e;
e = qemu_mallocz(sizeof (*e));
e->cb = cb;
e->opaque = opaque;
QLIST_INSERT_HEAD(&vm_change_state_head, e, entries);
return e;
}
void qemu_del_vm_change_state_handler(VMChangeStateEntry *e)
{
QLIST_REMOVE (e, entries);
qemu_free (e);
}
void vm_state_notify(int running, int reason)
{
VMChangeStateEntry *e;
for (e = vm_change_state_head.lh_first; e; e = e->entries.le_next) {
e->cb(e->opaque, running, reason);
}
}
void vm_start(void)
{
if (!vm_running) {
cpu_enable_ticks();
vm_running = 1;
vm_state_notify(1, 0);
resume_all_vcpus();
monitor_protocol_event(QEVENT_RESUME, NULL);
}
}
/* reset/shutdown handler */
typedef struct QEMUResetEntry {
QTAILQ_ENTRY(QEMUResetEntry) entry;
QEMUResetHandler *func;
void *opaque;
} QEMUResetEntry;
static QTAILQ_HEAD(reset_handlers, QEMUResetEntry) reset_handlers =
QTAILQ_HEAD_INITIALIZER(reset_handlers);
static int reset_requested;
static int shutdown_requested;
static int powerdown_requested;
int debug_requested;
int vmstop_requested;
int qemu_shutdown_requested(void)
{
int r = shutdown_requested;
shutdown_requested = 0;
return r;
}
int qemu_reset_requested(void)
{
int r = reset_requested;
reset_requested = 0;
return r;
}
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;
}
static int qemu_vmstop_requested(void)
{
int r = vmstop_requested;
vmstop_requested = 0;
return r;
}
void qemu_register_reset(QEMUResetHandler *func, void *opaque)
{
QEMUResetEntry *re = qemu_mallocz(sizeof(QEMUResetEntry));
re->func = func;
re->opaque = opaque;
QTAILQ_INSERT_TAIL(&reset_handlers, re, entry);
}
void qemu_unregister_reset(QEMUResetHandler *func, void *opaque)
{
QEMUResetEntry *re;
QTAILQ_FOREACH(re, &reset_handlers, entry) {
if (re->func == func && re->opaque == opaque) {
QTAILQ_REMOVE(&reset_handlers, re, entry);
qemu_free(re);
return;
}
}
}
void qemu_system_reset(void)
{
QEMUResetEntry *re, *nre;
/* reset all devices */
QTAILQ_FOREACH_SAFE(re, &reset_handlers, entry, nre) {
re->func(re->opaque);
}
monitor_protocol_event(QEVENT_RESET, NULL);
cpu_synchronize_all_post_reset();
}
void qemu_system_reset_request(void)
{
if (no_reboot) {
shutdown_requested = 1;
} else {
reset_requested = 1;
}
qemu_notify_event();
}
void qemu_system_shutdown_request(void)
{
shutdown_requested = 1;
qemu_notify_event();
}
void qemu_system_powerdown_request(void)
{
powerdown_requested = 1;
qemu_notify_event();
}
#ifdef _WIN32
static void host_main_loop_wait(int *timeout)
{
int ret, ret2, i;
PollingEntry *pe;
/* XXX: need to suppress polling by better using win32 events */
ret = 0;
for(pe = first_polling_entry; pe != NULL; pe = pe->next) {
ret |= pe->func(pe->opaque);
}
if (ret == 0) {
int err;
WaitObjects *w = &wait_objects;
ret = WaitForMultipleObjects(w->num, w->events, FALSE, *timeout);
if (WAIT_OBJECT_0 + 0 <= ret && ret <= WAIT_OBJECT_0 + w->num - 1) {
if (w->func[ret - WAIT_OBJECT_0])
w->func[ret - WAIT_OBJECT_0](w->opaque[ret - WAIT_OBJECT_0]);
/* Check for additional signaled events */
for(i = (ret - WAIT_OBJECT_0 + 1); i < w->num; i++) {
/* Check if event is signaled */
ret2 = WaitForSingleObject(w->events[i], 0);
if(ret2 == WAIT_OBJECT_0) {
if (w->func[i])
w->func[i](w->opaque[i]);
} else if (ret2 == WAIT_TIMEOUT) {
} else {
err = GetLastError();
fprintf(stderr, "WaitForSingleObject error %d %d\n", i, err);
}
}
} else if (ret == WAIT_TIMEOUT) {
} else {
err = GetLastError();
fprintf(stderr, "WaitForMultipleObjects error %d %d\n", ret, err);
}
}
*timeout = 0;
}
#else
static void host_main_loop_wait(int *timeout)
{
}
#endif
void main_loop_wait(int nonblocking)
{
IOHandlerRecord *ioh;
fd_set rfds, wfds, xfds;
int ret, nfds;
struct timeval tv;
int timeout;
if (nonblocking)
timeout = 0;
else {
timeout = qemu_calculate_timeout();
qemu_bh_update_timeout(&timeout);
}
host_main_loop_wait(&timeout);
/* poll any events */
/* XXX: separate device handlers from system ones */
nfds = -1;
FD_ZERO(&rfds);
FD_ZERO(&wfds);
FD_ZERO(&xfds);
QLIST_FOREACH(ioh, &io_handlers, next) {
if (ioh->deleted)
continue;
if (ioh->fd_read &&
(!ioh->fd_read_poll ||
ioh->fd_read_poll(ioh->opaque) != 0)) {
FD_SET(ioh->fd, &rfds);
if (ioh->fd > nfds)
nfds = ioh->fd;
}
if (ioh->fd_write) {
FD_SET(ioh->fd, &wfds);
if (ioh->fd > nfds)
nfds = ioh->fd;
}
}
tv.tv_sec = timeout / 1000;
tv.tv_usec = (timeout % 1000) * 1000;
slirp_select_fill(&nfds, &rfds, &wfds, &xfds);
qemu_mutex_unlock_iothread();
ret = select(nfds + 1, &rfds, &wfds, &xfds, &tv);
qemu_mutex_lock_iothread();
if (ret > 0) {
IOHandlerRecord *pioh;
QLIST_FOREACH_SAFE(ioh, &io_handlers, next, pioh) {
if (ioh->deleted) {
QLIST_REMOVE(ioh, next);
qemu_free(ioh);
continue;
}
if (ioh->fd_read && FD_ISSET(ioh->fd, &rfds)) {
ioh->fd_read(ioh->opaque);
}
if (ioh->fd_write && FD_ISSET(ioh->fd, &wfds)) {
ioh->fd_write(ioh->opaque);
}
}
}
slirp_select_poll(&rfds, &wfds, &xfds, (ret < 0));
qemu_run_all_timers();
/* Check bottom-halves last in case any of the earlier events triggered
them. */
qemu_bh_poll();
}
static int vm_can_run(void)
{
if (powerdown_requested)
return 0;
if (reset_requested)
return 0;
if (shutdown_requested)
return 0;
if (debug_requested)
return 0;
return 1;
}
qemu_irq qemu_system_powerdown;
static void main_loop(void)
{
int r;
qemu_main_loop_start();
for (;;) {
do {
bool nonblocking = false;
#ifdef CONFIG_PROFILER
int64_t ti;
#endif
#ifndef CONFIG_IOTHREAD
nonblocking = tcg_cpu_exec();
#endif
#ifdef CONFIG_PROFILER
ti = profile_getclock();
#endif
main_loop_wait(nonblocking);
#ifdef CONFIG_PROFILER
dev_time += profile_getclock() - ti;
#endif
} while (vm_can_run());
if ((r = qemu_debug_requested())) {
vm_stop(r);
}
if (qemu_shutdown_requested()) {
monitor_protocol_event(QEVENT_SHUTDOWN, NULL);
if (no_shutdown) {
vm_stop(0);
no_shutdown = 0;
} else
break;
}
if (qemu_reset_requested()) {
pause_all_vcpus();
qemu_system_reset();
resume_all_vcpus();
}
if (qemu_powerdown_requested()) {
monitor_protocol_event(QEVENT_POWERDOWN, NULL);
qemu_irq_raise(qemu_system_powerdown);
}
if ((r = qemu_vmstop_requested())) {
vm_stop(r);
}
}
pause_all_vcpus();
}
static void version(void)
{
printf("QEMU emulator version " QEMU_VERSION QEMU_PKGVERSION ", Copyright (c) 2003-2008 Fabrice Bellard\n");
}
static void help(int exitcode)
{
const char *options_help =
#define DEF(option, opt_arg, opt_enum, opt_help, arch_mask) \
opt_help
#define DEFHEADING(text) stringify(text) "\n"
#include "qemu-options.h"
#undef DEF
#undef DEFHEADING
#undef GEN_DOCS
;
version();
printf("usage: %s [options] [disk_image]\n"
"\n"
"'disk_image' is a raw hard disk image for IDE hard disk 0\n"
"\n"
"%s\n"
"During 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",
"qemu",
options_help);
exit(exitcode);
}
#define HAS_ARG 0x0001
enum {
#define DEF(option, opt_arg, opt_enum, opt_help, arch_mask) \
opt_enum,
#define DEFHEADING(text)
#include "qemu-options.h"
#undef DEF
#undef DEFHEADING
#undef GEN_DOCS
};
typedef struct QEMUOption {
const char *name;
int flags;
int index;
uint32_t arch_mask;
} QEMUOption;
static const QEMUOption qemu_options[] = {
{ "h", 0, QEMU_OPTION_h, QEMU_ARCH_ALL },
#define DEF(option, opt_arg, opt_enum, opt_help, arch_mask) \
{ option, opt_arg, opt_enum, arch_mask },
#define DEFHEADING(text)
#include "qemu-options.h"
#undef DEF
#undef DEFHEADING
#undef GEN_DOCS
{ NULL },
};
static void select_vgahw (const char *p)
{
const char *opts;
default_vga = 0;
vga_interface_type = VGA_NONE;
if (strstart(p, "std", &opts)) {
vga_interface_type = VGA_STD;
} else if (strstart(p, "cirrus", &opts)) {
vga_interface_type = VGA_CIRRUS;
} else if (strstart(p, "vmware", &opts)) {
vga_interface_type = VGA_VMWARE;
} else if (strstart(p, "xenfb", &opts)) {
vga_interface_type = VGA_XENFB;
} else if (!strstart(p, "none", &opts)) {
invalid_vga:
fprintf(stderr, "Unknown vga type: %s\n", 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 int balloon_parse(const char *arg)
{
QemuOpts *opts;
if (strcmp(arg, "none") == 0) {
return 0;
}
if (!strncmp(arg, "virtio", 6)) {
if (arg[6] == ',') {
/* have params -> parse them */
opts = qemu_opts_parse(&qemu_device_opts, arg+7, 0);
if (!opts)
return -1;
} else {
/* create empty opts */
opts = qemu_opts_create(&qemu_device_opts, NULL, 0);
}
qemu_opt_set(opts, "driver", "virtio-balloon-pci");
return 0;
}
return -1;
}
#ifdef _WIN32
static BOOL WINAPI qemu_ctrl_handler(DWORD type)
{
exit(STATUS_CONTROL_C_EXIT);
return TRUE;
}
#endif
#ifndef _WIN32
static void termsig_handler(int signal)
{
qemu_system_shutdown_request();
}
static void sigchld_handler(int signal)
{
waitpid(-1, NULL, WNOHANG);
}
static void sighandler_setup(void)
{
struct sigaction act;
memset(&act, 0, sizeof(act));
act.sa_handler = termsig_handler;
sigaction(SIGINT, &act, NULL);
sigaction(SIGHUP, &act, NULL);
sigaction(SIGTERM, &act, NULL);
act.sa_handler = sigchld_handler;
act.sa_flags = SA_NOCLDSTOP;
sigaction(SIGCHLD, &act, NULL);
}
#endif
#ifdef _WIN32
/* Look for support files in the same directory as the executable. */
static char *find_datadir(const char *argv0)
{
char *p;
char buf[MAX_PATH];
DWORD len;
len = GetModuleFileName(NULL, buf, sizeof(buf) - 1);
if (len == 0) {
return NULL;
}
buf[len] = 0;
p = buf + len - 1;
while (p != buf && *p != '\\')
p--;
*p = 0;
if (access(buf, R_OK) == 0) {
return qemu_strdup(buf);
}
return NULL;
}
#else /* !_WIN32 */
/* Find a likely location for support files using the location of the binary.
For installed binaries this will be "$bindir/../share/qemu". When
running from the build tree this will be "$bindir/../pc-bios". */
#define SHARE_SUFFIX "/share/qemu"
#define BUILD_SUFFIX "/pc-bios"
static char *find_datadir(const char *argv0)
{
char *dir;
char *p = NULL;
char *res;
char buf[PATH_MAX];
size_t max_len;
#if defined(__linux__)
{
int len;
len = readlink("/proc/self/exe", buf, sizeof(buf) - 1);
if (len > 0) {
buf[len] = 0;
p = buf;
}
}
#elif defined(__FreeBSD__)
{
static int mib[4] = {CTL_KERN, KERN_PROC, KERN_PROC_PATHNAME, -1};
size_t len = sizeof(buf) - 1;
*buf = '\0';
if (!sysctl(mib, sizeof(mib)/sizeof(*mib), buf, &len, NULL, 0) &&
*buf) {
buf[sizeof(buf) - 1] = '\0';
p = buf;
}
}
#endif
/* If we don't have any way of figuring out the actual executable
location then try argv[0]. */
if (!p) {
p = realpath(argv0, buf);
if (!p) {
return NULL;
}
}
dir = dirname(p);
dir = dirname(dir);
max_len = strlen(dir) +
MAX(strlen(SHARE_SUFFIX), strlen(BUILD_SUFFIX)) + 1;
res = qemu_mallocz(max_len);
snprintf(res, max_len, "%s%s", dir, SHARE_SUFFIX);
if (access(res, R_OK)) {
snprintf(res, max_len, "%s%s", dir, BUILD_SUFFIX);
if (access(res, R_OK)) {
qemu_free(res);
res = NULL;
}
}
return res;
}
#undef SHARE_SUFFIX
#undef BUILD_SUFFIX
#endif
char *qemu_find_file(int type, const char *name)
{
int len;
const char *subdir;
char *buf;
/* If name contains path separators then try it as a straight path. */
if ((strchr(name, '/') || strchr(name, '\\'))
&& access(name, R_OK) == 0) {
return qemu_strdup(name);
}
switch (type) {
case QEMU_FILE_TYPE_BIOS:
subdir = "";
break;
case QEMU_FILE_TYPE_KEYMAP:
subdir = "keymaps/";
break;
default:
abort();
}
len = strlen(data_dir) + strlen(name) + strlen(subdir) + 2;
buf = qemu_mallocz(len);
snprintf(buf, len, "%s/%s%s", data_dir, subdir, name);
if (access(buf, R_OK)) {
qemu_free(buf);
return NULL;
}
return buf;
}
static int device_help_func(QemuOpts *opts, void *opaque)
{
return qdev_device_help(opts);
}
static int device_init_func(QemuOpts *opts, void *opaque)
{
DeviceState *dev;
dev = qdev_device_add(opts);
if (!dev)
return -1;
return 0;
}
static int chardev_init_func(QemuOpts *opts, void *opaque)
{
CharDriverState *chr;
chr = qemu_chr_open_opts(opts, NULL);
if (!chr)
return -1;
return 0;
}
#ifdef CONFIG_LINUX
static int fsdev_init_func(QemuOpts *opts, void *opaque)
{
int ret;
ret = qemu_fsdev_add(opts);
return ret;
}
#endif
static int mon_init_func(QemuOpts *opts, void *opaque)
{
CharDriverState *chr;
const char *chardev;
const char *mode;
int flags;
mode = qemu_opt_get(opts, "mode");
if (mode == NULL) {
mode = "readline";
}
if (strcmp(mode, "readline") == 0) {
flags = MONITOR_USE_READLINE;
} else if (strcmp(mode, "control") == 0) {
flags = MONITOR_USE_CONTROL;
} else {
fprintf(stderr, "unknown monitor mode \"%s\"\n", mode);
exit(1);
}
if (qemu_opt_get_bool(opts, "default", 0))
flags |= MONITOR_IS_DEFAULT;
chardev = qemu_opt_get(opts, "chardev");
chr = qemu_chr_find(chardev);
if (chr == NULL) {
fprintf(stderr, "chardev \"%s\" not found\n", chardev);
exit(1);
}
monitor_init(chr, flags);
return 0;
}
static void monitor_parse(const char *optarg, const char *mode)
{
static int monitor_device_index = 0;
QemuOpts *opts;
const char *p;
char label[32];
int def = 0;
if (strstart(optarg, "chardev:", &p)) {
snprintf(label, sizeof(label), "%s", p);
} else {
snprintf(label, sizeof(label), "compat_monitor%d",
monitor_device_index);
if (monitor_device_index == 0) {
def = 1;
}
opts = qemu_chr_parse_compat(label, optarg);
if (!opts) {
fprintf(stderr, "parse error: %s\n", optarg);
exit(1);
}
}
opts = qemu_opts_create(&qemu_mon_opts, label, 1);
if (!opts) {
fprintf(stderr, "duplicate chardev: %s\n", label);
exit(1);
}
qemu_opt_set(opts, "mode", mode);
qemu_opt_set(opts, "chardev", label);
if (def)
qemu_opt_set(opts, "default", "on");
monitor_device_index++;
}
struct device_config {
enum {
DEV_USB, /* -usbdevice */
DEV_BT, /* -bt */
DEV_SERIAL, /* -serial */
DEV_PARALLEL, /* -parallel */
DEV_VIRTCON, /* -virtioconsole */
DEV_DEBUGCON, /* -debugcon */
} type;
const char *cmdline;
QTAILQ_ENTRY(device_config) next;
};
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 = qemu_mallocz(sizeof(*conf));
conf->type = type;
conf->cmdline = cmdline;
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;
rc = func(conf->cmdline);
if (0 != rc)
return rc;
}
return 0;
}
static int serial_parse(const char *devname)
{
static int index = 0;
char label[32];
if (strcmp(devname, "none") == 0)
return 0;
if (index == MAX_SERIAL_PORTS) {
fprintf(stderr, "qemu: too many serial ports\n");
exit(1);
}
snprintf(label, sizeof(label), "serial%d", index);
serial_hds[index] = qemu_chr_open(label, devname, NULL);
if (!serial_hds[index]) {
fprintf(stderr, "qemu: could not open serial device '%s': %s\n",
devname, strerror(errno));
return -1;
}
index++;
return 0;
}
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) {
fprintf(stderr, "qemu: too many parallel ports\n");
exit(1);
}
snprintf(label, sizeof(label), "parallel%d", index);
parallel_hds[index] = qemu_chr_open(label, devname, NULL);
if (!parallel_hds[index]) {
fprintf(stderr, "qemu: could not open parallel device '%s': %s\n",
devname, strerror(errno));
return -1;
}
index++;
return 0;
}
static int virtcon_parse(const char *devname)
{
static int index = 0;
char label[32];
QemuOpts *bus_opts, *dev_opts;
if (strcmp(devname, "none") == 0)
return 0;
if (index == MAX_VIRTIO_CONSOLES) {
fprintf(stderr, "qemu: too many virtio consoles\n");
exit(1);
}
bus_opts = qemu_opts_create(&qemu_device_opts, NULL, 0);
qemu_opt_set(bus_opts, "driver", "virtio-serial");
dev_opts = qemu_opts_create(&qemu_device_opts, NULL, 0);
qemu_opt_set(dev_opts, "driver", "virtconsole");
snprintf(label, sizeof(label), "virtcon%d", index);
virtcon_hds[index] = qemu_chr_open(label, devname, NULL);
if (!virtcon_hds[index]) {
fprintf(stderr, "qemu: could not open virtio console '%s': %s\n",
devname, strerror(errno));
return -1;
}
qemu_opt_set(dev_opts, "chardev", label);
index++;
return 0;
}
static int debugcon_parse(const char *devname)
{
QemuOpts *opts;
if (!qemu_chr_open("debugcon", devname, NULL)) {
exit(1);
}
opts = qemu_opts_create(&qemu_device_opts, "debugcon", 1);
if (!opts) {
fprintf(stderr, "qemu: already have a debugcon device\n");
exit(1);
}
qemu_opt_set(opts, "driver", "isa-debugcon");
qemu_opt_set(opts, "chardev", "debugcon");
return 0;
}
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;
}
int main(int argc, char **argv, char **envp)
{
const char *gdbstub_dev = NULL;
int i;
int snapshot, linux_boot;
const char *icount_option = NULL;
const char *initrd_filename;
const char *kernel_filename, *kernel_cmdline;
char boot_devices[33] = "cad"; /* default to HD->floppy->CD-ROM */
DisplayState *ds;
DisplayChangeListener *dcl;
int cyls, heads, secs, translation;
QemuOpts *hda_opts = NULL, *opts;
int optind;
const char *optarg;
const char *loadvm = NULL;
QEMUMachine *machine;
const char *cpu_model;
#ifndef _WIN32
int fds[2];
#endif
int tb_size;
const char *pid_file = NULL;
const char *incoming = NULL;
#ifndef _WIN32
int fd = 0;
struct passwd *pwd = NULL;
const char *chroot_dir = NULL;
const char *run_as = NULL;
#endif
int show_vnc_port = 0;
int defconfig = 1;
error_set_progname(argv[0]);
init_clocks();
qemu_cache_utils_init(envp);
QLIST_INIT (&vm_change_state_head);
#ifndef _WIN32
{
struct sigaction act;
sigfillset(&act.sa_mask);
act.sa_flags = 0;
act.sa_handler = SIG_IGN;
sigaction(SIGPIPE, &act, NULL);
}
#else
SetConsoleCtrlHandler(qemu_ctrl_handler, TRUE);
/* Note: cpu_interrupt() is currently not SMP safe, so we force
QEMU to run on a single CPU */
{
HANDLE h;
DWORD mask, smask;
int i;
h = GetCurrentProcess();
if (GetProcessAffinityMask(h, &mask, &smask)) {
for(i = 0; i < 32; i++) {
if (mask & (1 << i))
break;
}
if (i != 32) {
mask = 1 << i;
SetProcessAffinityMask(h, mask);
}
}
}
#endif
module_call_init(MODULE_INIT_MACHINE);
machine = find_default_machine();
cpu_model = NULL;
initrd_filename = NULL;
ram_size = 0;
snapshot = 0;
kernel_filename = NULL;
kernel_cmdline = "";
cyls = heads = secs = 0;
translation = BIOS_ATA_TRANSLATION_AUTO;
for (i = 0; i < MAX_NODES; i++) {
node_mem[i] = 0;
node_cpumask[i] = 0;
}
nb_numa_nodes = 0;
nb_nics = 0;
tb_size = 0;
autostart= 1;
/* first pass of option parsing */
optind = 1;
while (optind < argc) {
if (argv[optind][0] != '-') {
/* disk image */
optind++;
continue;
} else {
const QEMUOption *popt;
popt = lookup_opt(argc, argv, &optarg, &optind);
switch (popt->index) {
case QEMU_OPTION_nodefconfig:
defconfig=0;
break;
}
}
}
if (defconfig) {
int ret;
ret = qemu_read_config_file(CONFIG_QEMU_CONFDIR "/qemu.conf");
if (ret < 0 && ret != -ENOENT) {
exit(1);
}
ret = qemu_read_config_file(arch_config_name);
if (ret < 0 && ret != -ENOENT) {
exit(1);
}
}
cpudef_init();
/* second pass of option parsing */
optind = 1;
for(;;) {
if (optind >= argc)
break;
if (argv[optind][0] != '-') {
hda_opts = drive_add(argv[optind++], HD_ALIAS, 0);
} else {
const QEMUOption *popt;
popt = lookup_opt(argc, argv, &optarg, &optind);
if (!(popt->arch_mask & arch_type)) {
printf("Option %s not supported for this target\n", popt->name);
exit(1);
}
switch(popt->index) {
case QEMU_OPTION_M:
machine = find_machine(optarg);
if (!machine) {
QEMUMachine *m;
printf("Supported machines are:\n");
for(m = first_machine; m != NULL; m = m->next) {
if (m->alias)
printf("%-10s %s (alias of %s)\n",
m->alias, m->desc, m->name);
printf("%-10s %s%s\n",
m->name, m->desc,
m->is_default ? " (default)" : "");
}
exit(*optarg != '?');
}
break;
case QEMU_OPTION_cpu:
/* hw initialization will check this */
if (*optarg == '?') {
list_cpus(stdout, &fprintf, optarg);
exit(0);
} else {
cpu_model = optarg;
}
break;
case QEMU_OPTION_initrd:
initrd_filename = optarg;
break;
case QEMU_OPTION_hda:
if (cyls == 0)
hda_opts = drive_add(optarg, HD_ALIAS, 0);
else
hda_opts = drive_add(optarg, HD_ALIAS
",cyls=%d,heads=%d,secs=%d%s",
0, cyls, heads, secs,
translation == BIOS_ATA_TRANSLATION_LBA ?
",trans=lba" :
translation == BIOS_ATA_TRANSLATION_NONE ?
",trans=none" : "");
break;
case QEMU_OPTION_hdb:
case QEMU_OPTION_hdc:
case QEMU_OPTION_hdd:
drive_add(optarg, HD_ALIAS, popt->index - QEMU_OPTION_hda);
break;
case QEMU_OPTION_drive:
drive_add(NULL, "%s", optarg);
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(optarg, MTD_ALIAS);
break;
case QEMU_OPTION_sd:
drive_add(optarg, SD_ALIAS);
break;
case QEMU_OPTION_pflash:
drive_add(optarg, PFLASH_ALIAS);
break;
case QEMU_OPTION_snapshot:
snapshot = 1;
break;
case QEMU_OPTION_hdachs:
{
const char *p;
p = optarg;
cyls = strtol(p, (char **)&p, 0);
if (cyls < 1 || cyls > 16383)
goto chs_fail;
if (*p != ',')
goto chs_fail;
p++;
heads = strtol(p, (char **)&p, 0);
if (heads < 1 || heads > 16)
goto chs_fail;
if (*p != ',')
goto chs_fail;
p++;
secs = strtol(p, (char **)&p, 0);
if (secs < 1 || secs > 63)
goto chs_fail;
if (*p == ',') {
p++;
if (!strcmp(p, "none"))
translation = BIOS_ATA_TRANSLATION_NONE;
else if (!strcmp(p, "lba"))
translation = BIOS_ATA_TRANSLATION_LBA;
else if (!strcmp(p, "auto"))
translation = BIOS_ATA_TRANSLATION_AUTO;
else
goto chs_fail;
} else if (*p != '\0') {
chs_fail:
fprintf(stderr, "qemu: invalid physical CHS format\n");
exit(1);
}
if (hda_opts != NULL) {
char num[16];
snprintf(num, sizeof(num), "%d", cyls);
qemu_opt_set(hda_opts, "cyls", num);
snprintf(num, sizeof(num), "%d", heads);
qemu_opt_set(hda_opts, "heads", num);
snprintf(num, sizeof(num), "%d", secs);
qemu_opt_set(hda_opts, "secs", num);
if (translation == BIOS_ATA_TRANSLATION_LBA)
qemu_opt_set(hda_opts, "trans", "lba");
if (translation == BIOS_ATA_TRANSLATION_NONE)
qemu_opt_set(hda_opts, "trans", "none");
}
}
break;
case QEMU_OPTION_numa:
if (nb_numa_nodes >= MAX_NODES) {
fprintf(stderr, "qemu: too many NUMA nodes\n");
exit(1);
}
numa_add(optarg);
break;
case QEMU_OPTION_nographic:
display_type = DT_NOGRAPHIC;
break;
#ifdef CONFIG_CURSES
case QEMU_OPTION_curses:
display_type = DT_CURSES;
break;
#endif
case QEMU_OPTION_portrait:
graphic_rotate = 1;
break;
case QEMU_OPTION_kernel:
kernel_filename = optarg;
break;
case QEMU_OPTION_append:
kernel_cmdline = optarg;
break;
case QEMU_OPTION_cdrom:
drive_add(optarg, CDROM_ALIAS);
break;
case QEMU_OPTION_boot:
{
static const char * const params[] = {
"order", "once", "menu", NULL
};
char buf[sizeof(boot_devices)];
char *standard_boot_devices;
int legacy = 0;
if (!strchr(optarg, '=')) {
legacy = 1;
pstrcpy(buf, sizeof(buf), optarg);
} else if (check_params(buf, sizeof(buf), params, optarg) < 0) {
fprintf(stderr,
"qemu: unknown boot parameter '%s' in '%s'\n",
buf, optarg);
exit(1);
}
if (legacy ||
get_param_value(buf, sizeof(buf), "order", optarg)) {
validate_bootdevices(buf);
pstrcpy(boot_devices, sizeof(boot_devices), buf);
}
if (!legacy) {
if (get_param_value(buf, sizeof(buf),
"once", optarg)) {
validate_bootdevices(buf);
standard_boot_devices = qemu_strdup(boot_devices);
pstrcpy(boot_devices, sizeof(boot_devices), buf);
qemu_register_reset(restore_boot_devices,
standard_boot_devices);
}
if (get_param_value(buf, sizeof(buf),
"menu", optarg)) {
if (!strcmp(buf, "on")) {
boot_menu = 1;
} else if (!strcmp(buf, "off")) {
boot_menu = 0;
} else {
fprintf(stderr,
"qemu: invalid option value '%s'\n",
buf);
exit(1);
}
}
}
}
break;
case QEMU_OPTION_fda:
case QEMU_OPTION_fdb:
drive_add(optarg, FD_ALIAS, popt->index - QEMU_OPTION_fda);
break;
case QEMU_OPTION_no_fd_bootchk:
fd_bootchk = 0;
break;
case QEMU_OPTION_netdev:
if (net_client_parse(&qemu_netdev_opts, optarg) == -1) {
exit(1);
}
break;
case QEMU_OPTION_net:
if (net_client_parse(&qemu_net_opts, optarg) == -1) {
exit(1);
}
break;
#ifdef CONFIG_SLIRP
case QEMU_OPTION_tftp:
legacy_tftp_prefix = optarg;
break;
case QEMU_OPTION_bootp:
legacy_bootp_filename = optarg;
break;
#ifndef _WIN32
case QEMU_OPTION_smb:
if (net_slirp_smb(optarg) < 0)
exit(1);
break;
#endif
case QEMU_OPTION_redir:
if (net_slirp_redir(optarg) < 0)
exit(1);
break;
#endif
case QEMU_OPTION_bt:
add_device_config(DEV_BT, optarg);
break;
case QEMU_OPTION_audio_help:
if (!(audio_available())) {
printf("Option %s not supported for this target\n", popt->name);
exit(1);
}
AUD_help ();
exit (0);
break;
case QEMU_OPTION_soundhw:
if (!(audio_available())) {
printf("Option %s not supported for this target\n", popt->name);
exit(1);
}
select_soundhw (optarg);
break;
case QEMU_OPTION_h:
help(0);
break;
case QEMU_OPTION_version:
version();
exit(0);
break;
case QEMU_OPTION_m: {
uint64_t value;
char *ptr;
value = strtoul(optarg, &ptr, 10);
switch (*ptr) {
case 0: case 'M': case 'm':
value <<= 20;
break;
case 'G': case 'g':
value <<= 30;
break;
default:
fprintf(stderr, "qemu: invalid ram size: %s\n", optarg);
exit(1);
}
/* On 32-bit hosts, QEMU is limited by virtual address space */
if (value > (2047 << 20) && HOST_LONG_BITS == 32) {
fprintf(stderr, "qemu: at most 2047 MB RAM can be simulated\n");
exit(1);
}
if (value != (uint64_t)(ram_addr_t)value) {
fprintf(stderr, "qemu: ram size too large\n");
exit(1);
}
ram_size = value;
break;
}
case QEMU_OPTION_mempath:
mem_path = optarg;
break;
#ifdef MAP_POPULATE
case QEMU_OPTION_mem_prealloc:
mem_prealloc = 1;
break;
#endif
case QEMU_OPTION_d:
set_cpu_log(optarg);
break;
case QEMU_OPTION_s:
gdbstub_dev = "tcp::" DEFAULT_GDBSTUB_PORT;
break;
case QEMU_OPTION_gdb:
gdbstub_dev = optarg;
break;
case QEMU_OPTION_L:
data_dir = optarg;
break;
case QEMU_OPTION_bios:
bios_name = optarg;
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_localtime:
rtc_utc = 0;
break;
case QEMU_OPTION_vga:
select_vgahw (optarg);
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:
fprintf(stderr, "qemu: invalid resolution or depth\n");
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 != 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:
monitor_parse(optarg, "readline");
default_monitor = 0;
break;
case QEMU_OPTION_qmp:
monitor_parse(optarg, "control");
default_monitor = 0;
break;
case QEMU_OPTION_mon:
opts = qemu_opts_parse(&qemu_mon_opts, optarg, 1);
if (!opts) {
exit(1);
}
default_monitor = 0;
break;
case QEMU_OPTION_chardev:
opts = qemu_opts_parse(&qemu_chardev_opts, optarg, 1);
if (!opts) {
exit(1);
}
break;
#ifdef CONFIG_LINUX
case QEMU_OPTION_fsdev:
opts = qemu_opts_parse(&qemu_fsdev_opts, optarg, 1);
if (!opts) {
fprintf(stderr, "parse error: %s\n", optarg);
exit(1);
}
break;
case QEMU_OPTION_virtfs: {
char *arg_fsdev = NULL;
char *arg_9p = NULL;
int len = 0;
opts = qemu_opts_parse(&qemu_virtfs_opts, optarg, 1);
if (!opts) {
fprintf(stderr, "parse error: %s\n", optarg);
exit(1);
}
len = strlen(",id=,path=");
len += strlen(qemu_opt_get(opts, "fstype"));
len += strlen(qemu_opt_get(opts, "mount_tag"));
len += strlen(qemu_opt_get(opts, "path"));
arg_fsdev = qemu_malloc((len + 1) * sizeof(*arg_fsdev));
if (!arg_fsdev) {
fprintf(stderr, "No memory to parse -fsdev for %s\n",
optarg);
exit(1);
}
sprintf(arg_fsdev, "%s,id=%s,path=%s",
qemu_opt_get(opts, "fstype"),
qemu_opt_get(opts, "mount_tag"),
qemu_opt_get(opts, "path"));
len = strlen("virtio-9p-pci,fsdev=,mount_tag=");
len += 2*strlen(qemu_opt_get(opts, "mount_tag"));
arg_9p = qemu_malloc((len + 1) * sizeof(*arg_9p));
if (!arg_9p) {
fprintf(stderr, "No memory to parse -device for %s\n",
optarg);
exit(1);
}
sprintf(arg_9p, "virtio-9p-pci,fsdev=%s,mount_tag=%s",
qemu_opt_get(opts, "mount_tag"),
qemu_opt_get(opts, "mount_tag"));
if (!qemu_opts_parse(&qemu_fsdev_opts, arg_fsdev, 1)) {
fprintf(stderr, "parse error [fsdev]: %s\n", optarg);
exit(1);
}
if (!qemu_opts_parse(&qemu_device_opts, arg_9p, 1)) {
fprintf(stderr, "parse error [device]: %s\n", optarg);
exit(1);
}
qemu_free(arg_fsdev);
qemu_free(arg_9p);
break;
}
#endif
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) {
fprintf(stderr,
"qemu: only one watchdog option may be given\n");
return 1;
}
watchdog = optarg;
break;
case QEMU_OPTION_watchdog_action:
if (select_watchdog_action(optarg) == -1) {
fprintf(stderr, "Unknown -watchdog-action parameter\n");
exit(1);
}
break;
case QEMU_OPTION_virtiocon:
add_device_config(DEV_VIRTCON, optarg);
default_virtcon = 0;
if (strncmp(optarg, "mon:", 4) == 0) {
default_monitor = 0;
}
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:
full_screen = 1;
break;
#ifdef CONFIG_SDL
case QEMU_OPTION_no_frame:
no_frame = 1;
break;
case QEMU_OPTION_alt_grab:
alt_grab = 1;
break;
case QEMU_OPTION_ctrl_grab:
ctrl_grab = 1;
break;
case QEMU_OPTION_no_quit:
no_quit = 1;
break;
case QEMU_OPTION_sdl:
display_type = DT_SDL;
break;
#endif
case QEMU_OPTION_pidfile:
pid_file = optarg;
break;
case QEMU_OPTION_win2k_hack:
win2k_install_hack = 1;
break;
case QEMU_OPTION_rtc_td_hack:
rtc_td_hack = 1;
break;
case QEMU_OPTION_acpitable:
do_acpitable_option(optarg);
break;
case QEMU_OPTION_smbios:
do_smbios_option(optarg);
break;
case QEMU_OPTION_enable_kvm:
kvm_allowed = 1;
break;
case QEMU_OPTION_usb:
usb_enabled = 1;
break;
case QEMU_OPTION_usbdevice:
usb_enabled = 1;
add_device_config(DEV_USB, optarg);
break;
case QEMU_OPTION_device:
if (!qemu_opts_parse(&qemu_device_opts, optarg, 1)) {
exit(1);
}
break;
case QEMU_OPTION_smp:
smp_parse(optarg);
if (smp_cpus < 1) {
fprintf(stderr, "Invalid number of CPUs\n");
exit(1);
}
if (max_cpus < smp_cpus) {
fprintf(stderr, "maxcpus must be equal to or greater than "
"smp\n");
exit(1);
}
if (max_cpus > 255) {
fprintf(stderr, "Unsupported number of maxcpus\n");
exit(1);
}
break;
case QEMU_OPTION_vnc:
display_type = DT_VNC;
vnc_display = optarg;
break;
case QEMU_OPTION_no_acpi:
acpi_enabled = 0;
break;
case QEMU_OPTION_no_hpet:
no_hpet = 1;
break;
case QEMU_OPTION_balloon:
if (balloon_parse(optarg) < 0) {
fprintf(stderr, "Unknown -balloon argument %s\n", optarg);
exit(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:
cursor_hide = 0;
break;
case QEMU_OPTION_uuid:
if(qemu_uuid_parse(optarg, qemu_uuid) < 0) {
fprintf(stderr, "Fail to parse UUID string."
" Wrong format.\n");
exit(1);
}
break;
#ifndef _WIN32
case QEMU_OPTION_daemonize:
daemonize = 1;
break;
#endif
case QEMU_OPTION_option_rom:
if (nb_option_roms >= MAX_OPTION_ROMS) {
fprintf(stderr, "Too many option ROMs\n");
exit(1);
}
option_rom[nb_option_roms] = optarg;
nb_option_roms++;
break;
case QEMU_OPTION_semihosting:
semihosting_enabled = 1;
break;
case QEMU_OPTION_name:
qemu_name = qemu_strdup(optarg);
{
char *p = strchr(qemu_name, ',');
if (p != NULL) {
*p++ = 0;
if (strncmp(p, "process=", 8)) {
fprintf(stderr, "Unknown subargument %s to -name", p);
exit(1);
}
p += 8;
set_proc_name(p);
}
}
break;
case QEMU_OPTION_prom_env:
if (nb_prom_envs >= MAX_PROM_ENVS) {
fprintf(stderr, "Too many prom variables\n");
exit(1);
}
prom_envs[nb_prom_envs] = optarg;
nb_prom_envs++;
break;
case QEMU_OPTION_old_param:
old_param = 1;
break;
case QEMU_OPTION_clock:
configure_alarms(optarg);
break;
case QEMU_OPTION_startdate:
configure_rtc_date_offset(optarg, 1);
break;
case QEMU_OPTION_rtc:
opts = qemu_opts_parse(&qemu_rtc_opts, optarg, 0);
if (!opts) {
exit(1);
}
configure_rtc(opts);
break;
case QEMU_OPTION_tb_size:
tb_size = strtol(optarg, NULL, 0);
if (tb_size < 0)
tb_size = 0;
break;
case QEMU_OPTION_icount:
icount_option = optarg;
break;
case QEMU_OPTION_incoming:
incoming = optarg;
break;
case QEMU_OPTION_nodefaults:
default_serial = 0;
default_parallel = 0;
default_virtcon = 0;
default_monitor = 0;
default_vga = 0;
default_net = 0;
default_floppy = 0;
default_cdrom = 0;
default_sdcard = 0;
break;
#ifndef _WIN32
case QEMU_OPTION_chroot:
chroot_dir = optarg;
break;
case QEMU_OPTION_runas:
run_as = optarg;
break;
#endif
case QEMU_OPTION_xen_domid:
if (!(xen_available())) {
printf("Option %s not supported for this target\n", popt->name);
exit(1);
}
xen_domid = atoi(optarg);
break;
case QEMU_OPTION_xen_create:
if (!(xen_available())) {
printf("Option %s not supported for this target\n", popt->name);
exit(1);
}
xen_mode = XEN_CREATE;
break;
case QEMU_OPTION_xen_attach:
if (!(xen_available())) {
printf("Option %s not supported for this target\n", popt->name);
exit(1);
}
xen_mode = XEN_ATTACH;
break;
case QEMU_OPTION_readconfig:
{
int ret = qemu_read_config_file(optarg);
if (ret < 0) {
fprintf(stderr, "read config %s: %s\n", optarg,
strerror(-ret));
exit(1);
}
break;
}
case QEMU_OPTION_writeconfig:
{
FILE *fp;
if (strcmp(optarg, "-") == 0) {
fp = stdout;
} else {
fp = fopen(optarg, "w");
if (fp == NULL) {
fprintf(stderr, "open %s: %s\n", optarg, strerror(errno));
exit(1);
}
}
qemu_config_write(fp);
fclose(fp);
break;
}
}
}
}
loc_set_none();
/* If no data_dir is specified then try to find it relative to the
executable path. */
if (!data_dir) {
data_dir = find_datadir(argv[0]);
}
/* If all else fails use the install patch specified when building. */
if (!data_dir) {
data_dir = CONFIG_QEMU_SHAREDIR;
}
/*
* Default to max_cpus = smp_cpus, in case the user doesn't
* specify a max_cpus value.
*/
if (!max_cpus)
max_cpus = smp_cpus;
machine->max_cpus = machine->max_cpus ?: 1; /* Default to UP */
if (smp_cpus > machine->max_cpus) {
fprintf(stderr, "Number of SMP cpus requested (%d), exceeds max cpus "
"supported by machine `%s' (%d)\n", smp_cpus, machine->name,
machine->max_cpus);
exit(1);
}
qemu_opts_foreach(&qemu_device_opts, default_driver_check, NULL, 0);
qemu_opts_foreach(&qemu_global_opts, default_driver_check, NULL, 0);
if (machine->no_serial) {
default_serial = 0;
}
if (machine->no_parallel) {
default_parallel = 0;
}
if (!machine->use_virtcon) {
default_virtcon = 0;
}
if (machine->no_vga) {
default_vga = 0;
}
if (machine->no_floppy) {
default_floppy = 0;
}
if (machine->no_cdrom) {
default_cdrom = 0;
}
if (machine->no_sdcard) {
default_sdcard = 0;
}
if (display_type == DT_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_virtcon && default_monitor) {
add_device_config(DEV_VIRTCON, "mon:stdio");
} else {
if (default_serial)
add_device_config(DEV_SERIAL, "stdio");
if (default_virtcon)
add_device_config(DEV_VIRTCON, "stdio");
if (default_monitor)
monitor_parse("stdio", "readline");
}
} 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");
if (default_virtcon)
add_device_config(DEV_VIRTCON, "vc:80Cx24C");
}
if (default_vga)
vga_interface_type = VGA_CIRRUS;
socket_init();
if (qemu_opts_foreach(&qemu_chardev_opts, chardev_init_func, NULL, 1) != 0)
exit(1);
#ifdef CONFIG_LINUX
if (qemu_opts_foreach(&qemu_fsdev_opts, fsdev_init_func, NULL, 1) != 0) {
exit(1);
}
#endif
#ifndef _WIN32
if (daemonize) {
pid_t pid;
if (pipe(fds) == -1)
exit(1);
pid = fork();
if (pid > 0) {
uint8_t status;
ssize_t len;
close(fds[1]);
again:
len = read(fds[0], &status, 1);
if (len == -1 && (errno == EINTR))
goto again;
if (len != 1)
exit(1);
else if (status == 1) {
fprintf(stderr, "Could not acquire pidfile: %s\n", strerror(errno));
exit(1);
} else
exit(0);
} else if (pid < 0)
exit(1);
close(fds[0]);
qemu_set_cloexec(fds[1]);
setsid();
pid = fork();
if (pid > 0)
exit(0);
else if (pid < 0)
exit(1);
umask(027);
signal(SIGTSTP, SIG_IGN);
signal(SIGTTOU, SIG_IGN);
signal(SIGTTIN, SIG_IGN);
}
#endif
if (pid_file && qemu_create_pidfile(pid_file) != 0) {
#ifndef _WIN32
if (daemonize) {
uint8_t status = 1;
if (write(fds[1], &status, 1) != 1) {
perror("daemonize. Writing to pipe\n");
}
} else
#endif
fprintf(stderr, "Could not acquire pid file: %s\n", strerror(errno));
exit(1);
}
if (kvm_allowed) {
int ret = kvm_init(smp_cpus);
if (ret < 0) {
if (!kvm_available()) {
printf("KVM not supported for this target\n");
} else {
fprintf(stderr, "failed to initialize KVM: %s\n", strerror(-ret));
}
exit(1);
}
}
if (qemu_init_main_loop()) {
fprintf(stderr, "qemu_init_main_loop failed\n");
exit(1);
}
linux_boot = (kernel_filename != NULL);
if (!linux_boot && *kernel_cmdline != '\0') {
fprintf(stderr, "-append only allowed with -kernel option\n");
exit(1);
}
if (!linux_boot && initrd_filename != NULL) {
fprintf(stderr, "-initrd only allowed with -kernel option\n");
exit(1);
}
#ifndef _WIN32
/* Win32 doesn't support line-buffering and requires size >= 2 */
setvbuf(stdout, NULL, _IOLBF, 0);
#endif
if (init_timer_alarm() < 0) {
fprintf(stderr, "could not initialize alarm timer\n");
exit(1);
}
configure_icount(icount_option);
if (net_init_clients() < 0) {
exit(1);
}
/* init the bluetooth world */
if (foreach_device_config(DEV_BT, bt_parse))
exit(1);
/* init the memory */
if (ram_size == 0)
ram_size = DEFAULT_RAM_SIZE * 1024 * 1024;
/* init the dynamic translator */
cpu_exec_init_all(tb_size * 1024 * 1024);
bdrv_init_with_whitelist();
blk_mig_init();
if (default_cdrom) {
/* we always create the cdrom drive, even if no disk is there */
drive_add(NULL, CDROM_ALIAS);
}
if (default_floppy) {
/* we always create at least one floppy */
drive_add(NULL, FD_ALIAS, 0);
}
if (default_sdcard) {
/* we always create one sd slot, even if no card is in it */
drive_add(NULL, SD_ALIAS);
}
/* open the virtual block devices */
if (snapshot)
qemu_opts_foreach(&qemu_drive_opts, drive_enable_snapshot, NULL, 0);
if (qemu_opts_foreach(&qemu_drive_opts, drive_init_func, machine, 1) != 0)
exit(1);
register_savevm_live("ram", 0, 3, NULL, ram_save_live, NULL,
ram_load, NULL);
if (nb_numa_nodes > 0) {
int i;
if (nb_numa_nodes > smp_cpus) {
nb_numa_nodes = smp_cpus;
}
/* If no memory size if given for any node, assume the default case
* and distribute the available memory equally across all nodes
*/
for (i = 0; i < nb_numa_nodes; i++) {
if (node_mem[i] != 0)
break;
}
if (i == nb_numa_nodes) {
uint64_t usedmem = 0;
/* On Linux, the each node's border has to be 8MB aligned,
* the final node gets the rest.
*/
for (i = 0; i < nb_numa_nodes - 1; i++) {
node_mem[i] = (ram_size / nb_numa_nodes) & ~((1 << 23UL) - 1);
usedmem += node_mem[i];
}
node_mem[i] = ram_size - usedmem;
}
for (i = 0; i < nb_numa_nodes; i++) {
if (node_cpumask[i] != 0)
break;
}
/* assigning the VCPUs round-robin is easier to implement, guest OSes
* must cope with this anyway, because there are BIOSes out there in
* real machines which also use this scheme.
*/
if (i == nb_numa_nodes) {
for (i = 0; i < smp_cpus; i++) {
node_cpumask[i % nb_numa_nodes] |= 1 << i;
}
}
}
if (qemu_opts_foreach(&qemu_mon_opts, mon_init_func, NULL, 1) != 0) {
exit(1);
}
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_VIRTCON, virtcon_parse) < 0)
exit(1);
if (foreach_device_config(DEV_DEBUGCON, debugcon_parse) < 0)
exit(1);
module_call_init(MODULE_INIT_DEVICE);
if (qemu_opts_foreach(&qemu_device_opts, device_help_func, NULL, 0) != 0)
exit(0);
if (watchdog) {
i = select_watchdog(watchdog);
if (i > 0)
exit (i == 1 ? 1 : 0);
}
if (machine->compat_props) {
qdev_prop_register_global_list(machine->compat_props);
}
qemu_add_globals();
machine->init(ram_size, boot_devices,
kernel_filename, kernel_cmdline, initrd_filename, cpu_model);
cpu_synchronize_all_post_init();
#ifndef _WIN32
/* must be after terminal init, SDL library changes signal handlers */
sighandler_setup();
#endif
set_numa_modes();
current_machine = machine;
/* init USB devices */
if (usb_enabled) {
if (foreach_device_config(DEV_USB, usb_parse) < 0)
exit(1);
}
/* init generic devices */
if (qemu_opts_foreach(&qemu_device_opts, device_init_func, NULL, 1) != 0)
exit(1);
net_check_clients();
/* just use the first displaystate for the moment */
ds = get_displaystate();
if (display_type == DT_DEFAULT) {
#if defined(CONFIG_SDL) || defined(CONFIG_COCOA)
display_type = DT_SDL;
#else
display_type = DT_VNC;
vnc_display = "localhost:0,to=99";
show_vnc_port = 1;
#endif
}
switch (display_type) {
case DT_NOGRAPHIC:
break;
#if defined(CONFIG_CURSES)
case DT_CURSES:
curses_display_init(ds, full_screen);
break;
#endif
#if defined(CONFIG_SDL)
case DT_SDL:
sdl_display_init(ds, full_screen, no_frame);
break;
#elif defined(CONFIG_COCOA)
case DT_SDL:
cocoa_display_init(ds, full_screen);
break;
#endif
case DT_VNC:
vnc_display_init(ds);
if (vnc_display_open(ds, vnc_display) < 0)
exit(1);
if (show_vnc_port) {
printf("VNC server running on `%s'\n", vnc_display_local_addr(ds));
}
break;
default:
break;
}
dpy_resize(ds);
dcl = ds->listeners;
while (dcl != NULL) {
if (dcl->dpy_refresh != NULL) {
ds->gui_timer = qemu_new_timer(rt_clock, gui_update, ds);
qemu_mod_timer(ds->gui_timer, qemu_get_clock(rt_clock));
}
dcl = dcl->next;
}
if (display_type == DT_NOGRAPHIC || display_type == DT_VNC) {
nographic_timer = qemu_new_timer(rt_clock, nographic_update, NULL);
qemu_mod_timer(nographic_timer, qemu_get_clock(rt_clock));
}
text_consoles_set_display(ds);
if (gdbstub_dev && gdbserver_start(gdbstub_dev) < 0) {
fprintf(stderr, "qemu: could not open gdbserver on device '%s'\n",
gdbstub_dev);
exit(1);
}
qdev_machine_creation_done();
if (rom_load_all() != 0) {
fprintf(stderr, "rom loading failed\n");
exit(1);
}
qemu_system_reset();
if (loadvm) {
if (load_vmstate(loadvm) < 0) {
autostart = 0;
}
}
if (incoming) {
qemu_start_incoming_migration(incoming);
} else if (autostart) {
vm_start();
}
#ifndef _WIN32
if (daemonize) {
uint8_t status = 0;
ssize_t len;
again1:
len = write(fds[1], &status, 1);
if (len == -1 && (errno == EINTR))
goto again1;
if (len != 1)
exit(1);
if (chdir("/")) {
perror("not able to chdir to /");
exit(1);
}
TFR(fd = qemu_open("/dev/null", O_RDWR));
if (fd == -1)
exit(1);
}
if (run_as) {
pwd = getpwnam(run_as);
if (!pwd) {
fprintf(stderr, "User \"%s\" doesn't exist\n", run_as);
exit(1);
}
}
if (chroot_dir) {
if (chroot(chroot_dir) < 0) {
fprintf(stderr, "chroot failed\n");
exit(1);
}
if (chdir("/")) {
perror("not able to chdir to /");
exit(1);
}
}
if (run_as) {
if (setgid(pwd->pw_gid) < 0) {
fprintf(stderr, "Failed to setgid(%d)\n", pwd->pw_gid);
exit(1);
}
if (setuid(pwd->pw_uid) < 0) {
fprintf(stderr, "Failed to setuid(%d)\n", pwd->pw_uid);
exit(1);
}
if (setuid(0) != -1) {
fprintf(stderr, "Dropping privileges failed\n");
exit(1);
}
}
if (daemonize) {
dup2(fd, 0);
dup2(fd, 1);
dup2(fd, 2);
close(fd);
}
#endif
main_loop();
quit_timers();
net_cleanup();
return 0;
}
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