aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 1 | /* |
| 2 | * QEMU System Emulator |
| 3 | * |
| 4 | * Copyright (c) 2003-2008 Fabrice Bellard |
| 5 | * |
| 6 | * Permission is hereby granted, free of charge, to any person obtaining a copy |
| 7 | * of this software and associated documentation files (the "Software"), to deal |
| 8 | * in the Software without restriction, including without limitation the rights |
| 9 | * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell |
| 10 | * copies of the Software, and to permit persons to whom the Software is |
| 11 | * furnished to do so, subject to the following conditions: |
| 12 | * |
| 13 | * The above copyright notice and this permission notice shall be included in |
| 14 | * all copies or substantial portions of the Software. |
| 15 | * |
| 16 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
| 17 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| 18 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL |
| 19 | * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
| 20 | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, |
| 21 | * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN |
| 22 | * THE SOFTWARE. |
| 23 | */ |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 24 | #include <unistd.h> |
| 25 | #include <fcntl.h> |
| 26 | #include <signal.h> |
| 27 | #include <time.h> |
| 28 | #include <errno.h> |
| 29 | #include <sys/time.h> |
| 30 | #include <zlib.h> |
| 31 | |
Juan Quintela | 71e72a1 | 2009-07-27 16:12:56 +0200 | [diff] [blame] | 32 | /* Needed early for CONFIG_BSD etc. */ |
blueswir1 | d40cdb1 | 2009-03-07 16:52:02 +0000 | [diff] [blame] | 33 | #include "config-host.h" |
| 34 | |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 35 | #ifndef _WIN32 |
| 36 | #include <sys/times.h> |
| 37 | #include <sys/wait.h> |
| 38 | #include <termios.h> |
| 39 | #include <sys/mman.h> |
| 40 | #include <sys/ioctl.h> |
| 41 | #include <sys/resource.h> |
| 42 | #include <sys/socket.h> |
| 43 | #include <netinet/in.h> |
| 44 | #include <net/if.h> |
| 45 | #if defined(__NetBSD__) |
| 46 | #include <net/if_tap.h> |
| 47 | #endif |
| 48 | #ifdef __linux__ |
| 49 | #include <linux/if_tun.h> |
| 50 | #endif |
| 51 | #include <arpa/inet.h> |
| 52 | #include <dirent.h> |
| 53 | #include <netdb.h> |
| 54 | #include <sys/select.h> |
Juan Quintela | 71e72a1 | 2009-07-27 16:12:56 +0200 | [diff] [blame] | 55 | #ifdef CONFIG_BSD |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 56 | #include <sys/stat.h> |
blueswir1 | c5e9723 | 2009-03-07 20:06:23 +0000 | [diff] [blame] | 57 | #if defined(__FreeBSD__) || defined(__DragonFly__) |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 58 | #include <libutil.h> |
| 59 | #else |
| 60 | #include <util.h> |
| 61 | #endif |
| 62 | #elif defined (__GLIBC__) && defined (__FreeBSD_kernel__) |
| 63 | #include <freebsd/stdlib.h> |
| 64 | #else |
| 65 | #ifdef __linux__ |
| 66 | #include <pty.h> |
| 67 | #include <malloc.h> |
| 68 | #include <linux/rtc.h> |
| 69 | #endif |
| 70 | #endif |
| 71 | #endif |
| 72 | |
| 73 | #ifdef _WIN32 |
aliguori | 49dc768 | 2009-03-08 16:26:59 +0000 | [diff] [blame] | 74 | #include <windows.h> |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 75 | #include <malloc.h> |
| 76 | #include <sys/timeb.h> |
| 77 | #include <mmsystem.h> |
| 78 | #define getopt_long_only getopt_long |
| 79 | #define memalign(align, size) malloc(size) |
| 80 | #endif |
| 81 | |
blueswir1 | 511d2b1 | 2009-03-07 15:32:56 +0000 | [diff] [blame] | 82 | #include "qemu-common.h" |
| 83 | #include "hw/hw.h" |
| 84 | #include "net.h" |
| 85 | #include "monitor.h" |
| 86 | #include "sysemu.h" |
| 87 | #include "qemu-timer.h" |
| 88 | #include "qemu-char.h" |
| 89 | #include "block.h" |
| 90 | #include "audio/audio.h" |
| 91 | #include "migration.h" |
| 92 | #include "qemu_socket.h" |
| 93 | |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 94 | /* point to the block driver where the snapshots are managed */ |
| 95 | static BlockDriverState *bs_snapshots; |
| 96 | |
| 97 | #define SELF_ANNOUNCE_ROUNDS 5 |
| 98 | #define ETH_P_EXPERIMENTAL 0x01F1 /* just a number */ |
| 99 | //#define ETH_P_EXPERIMENTAL 0x0012 /* make it the size of the packet */ |
| 100 | #define EXPERIMENTAL_MAGIC 0xf1f23f4f |
| 101 | |
| 102 | static int announce_self_create(uint8_t *buf, |
| 103 | uint8_t *mac_addr) |
| 104 | { |
| 105 | uint32_t magic = EXPERIMENTAL_MAGIC; |
| 106 | uint16_t proto = htons(ETH_P_EXPERIMENTAL); |
| 107 | |
| 108 | /* FIXME: should we send a different packet (arp/rarp/ping)? */ |
| 109 | |
Gleb Natapov | 976305b | 2009-05-21 17:17:43 +0300 | [diff] [blame] | 110 | memset(buf, 0, 64); |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 111 | memset(buf, 0xff, 6); /* h_dst */ |
| 112 | memcpy(buf + 6, mac_addr, 6); /* h_src */ |
| 113 | memcpy(buf + 12, &proto, 2); /* h_proto */ |
| 114 | memcpy(buf + 14, &magic, 4); /* magic */ |
| 115 | |
Gleb Natapov | 976305b | 2009-05-21 17:17:43 +0300 | [diff] [blame] | 116 | return 64; /* len */ |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 117 | } |
| 118 | |
Gleb Natapov | ed8b330 | 2009-05-21 17:17:44 +0300 | [diff] [blame] | 119 | static void qemu_announce_self_once(void *opaque) |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 120 | { |
Gleb Natapov | ed8b330 | 2009-05-21 17:17:44 +0300 | [diff] [blame] | 121 | int i, len; |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 122 | VLANState *vlan; |
| 123 | VLANClientState *vc; |
| 124 | uint8_t buf[256]; |
Gleb Natapov | ed8b330 | 2009-05-21 17:17:44 +0300 | [diff] [blame] | 125 | static int count = SELF_ANNOUNCE_ROUNDS; |
| 126 | QEMUTimer *timer = *(QEMUTimer **)opaque; |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 127 | |
aliguori | 3450df3 | 2009-03-13 15:03:58 +0000 | [diff] [blame] | 128 | for (i = 0; i < MAX_NICS; i++) { |
| 129 | if (!nd_table[i].used) |
| 130 | continue; |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 131 | len = announce_self_create(buf, nd_table[i].macaddr); |
| 132 | vlan = nd_table[i].vlan; |
Gleb Natapov | ed8b330 | 2009-05-21 17:17:44 +0300 | [diff] [blame] | 133 | for(vc = vlan->first_client; vc != NULL; vc = vc->next) { |
Mark McLoughlin | e3f5ec2 | 2009-05-18 13:33:03 +0100 | [diff] [blame] | 134 | vc->receive(vc, buf, len); |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 135 | } |
| 136 | } |
Gleb Natapov | ed8b330 | 2009-05-21 17:17:44 +0300 | [diff] [blame] | 137 | if (count--) { |
| 138 | qemu_mod_timer(timer, qemu_get_clock(rt_clock) + 100); |
| 139 | } else { |
| 140 | qemu_del_timer(timer); |
| 141 | qemu_free_timer(timer); |
| 142 | } |
| 143 | } |
| 144 | |
| 145 | void qemu_announce_self(void) |
| 146 | { |
| 147 | static QEMUTimer *timer; |
| 148 | timer = qemu_new_timer(rt_clock, qemu_announce_self_once, &timer); |
| 149 | qemu_announce_self_once(&timer); |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 150 | } |
| 151 | |
| 152 | /***********************************************************/ |
| 153 | /* savevm/loadvm support */ |
| 154 | |
| 155 | #define IO_BUF_SIZE 32768 |
| 156 | |
| 157 | struct QEMUFile { |
| 158 | QEMUFilePutBufferFunc *put_buffer; |
| 159 | QEMUFileGetBufferFunc *get_buffer; |
| 160 | QEMUFileCloseFunc *close; |
| 161 | QEMUFileRateLimit *rate_limit; |
Glauber Costa | 1962953 | 2009-05-20 18:26:57 -0400 | [diff] [blame] | 162 | QEMUFileSetRateLimit *set_rate_limit; |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 163 | void *opaque; |
| 164 | int is_write; |
| 165 | |
| 166 | int64_t buf_offset; /* start of buffer when writing, end of buffer |
| 167 | when reading */ |
| 168 | int buf_index; |
| 169 | int buf_size; /* 0 when writing */ |
| 170 | uint8_t buf[IO_BUF_SIZE]; |
| 171 | |
| 172 | int has_error; |
| 173 | }; |
| 174 | |
Paolo Bonzini | 7f79dd2 | 2009-08-12 14:17:35 +0200 | [diff] [blame] | 175 | typedef struct QEMUFileStdio |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 176 | { |
Paolo Bonzini | 7f79dd2 | 2009-08-12 14:17:35 +0200 | [diff] [blame] | 177 | FILE *stdio_file; |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 178 | QEMUFile *file; |
Paolo Bonzini | 7f79dd2 | 2009-08-12 14:17:35 +0200 | [diff] [blame] | 179 | } QEMUFileStdio; |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 180 | |
| 181 | typedef struct QEMUFileSocket |
| 182 | { |
| 183 | int fd; |
| 184 | QEMUFile *file; |
| 185 | } QEMUFileSocket; |
| 186 | |
| 187 | static int socket_get_buffer(void *opaque, uint8_t *buf, int64_t pos, int size) |
| 188 | { |
| 189 | QEMUFileSocket *s = opaque; |
| 190 | ssize_t len; |
| 191 | |
| 192 | do { |
Blue Swirl | c5b76b3 | 2009-06-13 08:44:31 +0000 | [diff] [blame] | 193 | len = recv(s->fd, (void *)buf, size, 0); |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 194 | } while (len == -1 && socket_error() == EINTR); |
| 195 | |
| 196 | if (len == -1) |
| 197 | len = -socket_error(); |
| 198 | |
| 199 | return len; |
| 200 | } |
| 201 | |
| 202 | static int socket_close(void *opaque) |
| 203 | { |
| 204 | QEMUFileSocket *s = opaque; |
| 205 | qemu_free(s); |
| 206 | return 0; |
| 207 | } |
| 208 | |
Paolo Bonzini | 7f79dd2 | 2009-08-12 14:17:35 +0200 | [diff] [blame] | 209 | static int stdio_put_buffer(void *opaque, const uint8_t *buf, int64_t pos, int size) |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 210 | { |
Paolo Bonzini | 7f79dd2 | 2009-08-12 14:17:35 +0200 | [diff] [blame] | 211 | QEMUFileStdio *s = opaque; |
| 212 | return fwrite(buf, 1, size, s->stdio_file); |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 213 | } |
| 214 | |
Paolo Bonzini | 7f79dd2 | 2009-08-12 14:17:35 +0200 | [diff] [blame] | 215 | static int stdio_get_buffer(void *opaque, uint8_t *buf, int64_t pos, int size) |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 216 | { |
Paolo Bonzini | 7f79dd2 | 2009-08-12 14:17:35 +0200 | [diff] [blame] | 217 | QEMUFileStdio *s = opaque; |
| 218 | FILE *fp = s->stdio_file; |
Uri Lublin | 8a67ec4 | 2009-06-08 19:27:21 +0300 | [diff] [blame] | 219 | int bytes; |
| 220 | |
| 221 | do { |
| 222 | clearerr(fp); |
| 223 | bytes = fread(buf, 1, size, fp); |
| 224 | } while ((bytes == 0) && ferror(fp) && (errno == EINTR)); |
| 225 | return bytes; |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 226 | } |
| 227 | |
Paolo Bonzini | 7f79dd2 | 2009-08-12 14:17:35 +0200 | [diff] [blame] | 228 | static int stdio_pclose(void *opaque) |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 229 | { |
Paolo Bonzini | 7f79dd2 | 2009-08-12 14:17:35 +0200 | [diff] [blame] | 230 | QEMUFileStdio *s = opaque; |
| 231 | pclose(s->stdio_file); |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 232 | qemu_free(s); |
| 233 | return 0; |
| 234 | } |
| 235 | |
Paolo Bonzini | 7f79dd2 | 2009-08-12 14:17:35 +0200 | [diff] [blame] | 236 | static int stdio_fclose(void *opaque) |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 237 | { |
Paolo Bonzini | 7f79dd2 | 2009-08-12 14:17:35 +0200 | [diff] [blame] | 238 | QEMUFileStdio *s = opaque; |
| 239 | fclose(s->stdio_file); |
| 240 | qemu_free(s); |
| 241 | return 0; |
| 242 | } |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 243 | |
Paolo Bonzini | 7f79dd2 | 2009-08-12 14:17:35 +0200 | [diff] [blame] | 244 | QEMUFile *qemu_popen(FILE *stdio_file, const char *mode) |
| 245 | { |
| 246 | QEMUFileStdio *s; |
| 247 | |
| 248 | if (stdio_file == NULL || mode == NULL || (mode[0] != 'r' && mode[0] != 'w') || mode[1] != 0) { |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 249 | fprintf(stderr, "qemu_popen: Argument validity check failed\n"); |
| 250 | return NULL; |
| 251 | } |
| 252 | |
Paolo Bonzini | 7f79dd2 | 2009-08-12 14:17:35 +0200 | [diff] [blame] | 253 | s = qemu_mallocz(sizeof(QEMUFileStdio)); |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 254 | |
Paolo Bonzini | 7f79dd2 | 2009-08-12 14:17:35 +0200 | [diff] [blame] | 255 | s->stdio_file = stdio_file; |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 256 | |
| 257 | if(mode[0] == 'r') { |
Paolo Bonzini | 7f79dd2 | 2009-08-12 14:17:35 +0200 | [diff] [blame] | 258 | s->file = qemu_fopen_ops(s, NULL, stdio_get_buffer, stdio_pclose, NULL, NULL); |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 259 | } else { |
Paolo Bonzini | 7f79dd2 | 2009-08-12 14:17:35 +0200 | [diff] [blame] | 260 | s->file = qemu_fopen_ops(s, stdio_put_buffer, NULL, stdio_pclose, NULL, NULL); |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 261 | } |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 262 | return s->file; |
| 263 | } |
| 264 | |
| 265 | QEMUFile *qemu_popen_cmd(const char *command, const char *mode) |
| 266 | { |
| 267 | FILE *popen_file; |
| 268 | |
| 269 | popen_file = popen(command, mode); |
| 270 | if(popen_file == NULL) { |
| 271 | return NULL; |
| 272 | } |
| 273 | |
| 274 | return qemu_popen(popen_file, mode); |
| 275 | } |
| 276 | |
Paolo Bonzini | 7f79dd2 | 2009-08-12 14:17:35 +0200 | [diff] [blame] | 277 | int qemu_stdio_fd(QEMUFile *f) |
Chris Lalancette | 8a43b1e | 2009-05-25 16:38:23 +0200 | [diff] [blame] | 278 | { |
Paolo Bonzini | 7f79dd2 | 2009-08-12 14:17:35 +0200 | [diff] [blame] | 279 | QEMUFileStdio *p; |
Chris Lalancette | 8a43b1e | 2009-05-25 16:38:23 +0200 | [diff] [blame] | 280 | int fd; |
| 281 | |
Paolo Bonzini | 7f79dd2 | 2009-08-12 14:17:35 +0200 | [diff] [blame] | 282 | p = (QEMUFileStdio *)f->opaque; |
| 283 | fd = fileno(p->stdio_file); |
Chris Lalancette | 8a43b1e | 2009-05-25 16:38:23 +0200 | [diff] [blame] | 284 | |
| 285 | return fd; |
| 286 | } |
| 287 | |
Paolo Bonzini | 5ac1fad | 2009-08-18 15:56:25 +0200 | [diff] [blame] | 288 | QEMUFile *qemu_fdopen(int fd, const char *mode) |
| 289 | { |
| 290 | QEMUFileStdio *s; |
| 291 | |
| 292 | if (mode == NULL || |
| 293 | (mode[0] != 'r' && mode[0] != 'w') || |
| 294 | mode[1] != 'b' || mode[2] != 0) { |
| 295 | fprintf(stderr, "qemu_fdopen: Argument validity check failed\n"); |
| 296 | return NULL; |
| 297 | } |
| 298 | |
| 299 | s = qemu_mallocz(sizeof(QEMUFileStdio)); |
| 300 | s->stdio_file = fdopen(fd, mode); |
| 301 | if (!s->stdio_file) |
| 302 | goto fail; |
| 303 | |
| 304 | if(mode[0] == 'r') { |
| 305 | s->file = qemu_fopen_ops(s, NULL, stdio_get_buffer, stdio_fclose, NULL, NULL); |
| 306 | } else { |
| 307 | s->file = qemu_fopen_ops(s, stdio_put_buffer, NULL, stdio_fclose, NULL, NULL); |
| 308 | } |
| 309 | return s->file; |
| 310 | |
| 311 | fail: |
| 312 | qemu_free(s); |
| 313 | return NULL; |
| 314 | } |
| 315 | |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 316 | QEMUFile *qemu_fopen_socket(int fd) |
| 317 | { |
| 318 | QEMUFileSocket *s = qemu_mallocz(sizeof(QEMUFileSocket)); |
| 319 | |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 320 | s->fd = fd; |
Glauber Costa | 1962953 | 2009-05-20 18:26:57 -0400 | [diff] [blame] | 321 | s->file = qemu_fopen_ops(s, NULL, socket_get_buffer, socket_close, NULL, NULL); |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 322 | return s->file; |
| 323 | } |
| 324 | |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 325 | static int file_put_buffer(void *opaque, const uint8_t *buf, |
| 326 | int64_t pos, int size) |
| 327 | { |
| 328 | QEMUFileStdio *s = opaque; |
Paolo Bonzini | 7f79dd2 | 2009-08-12 14:17:35 +0200 | [diff] [blame] | 329 | fseek(s->stdio_file, pos, SEEK_SET); |
| 330 | fwrite(buf, 1, size, s->stdio_file); |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 331 | return size; |
| 332 | } |
| 333 | |
| 334 | static int file_get_buffer(void *opaque, uint8_t *buf, int64_t pos, int size) |
| 335 | { |
| 336 | QEMUFileStdio *s = opaque; |
Paolo Bonzini | 7f79dd2 | 2009-08-12 14:17:35 +0200 | [diff] [blame] | 337 | fseek(s->stdio_file, pos, SEEK_SET); |
| 338 | return fread(buf, 1, size, s->stdio_file); |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 339 | } |
| 340 | |
| 341 | QEMUFile *qemu_fopen(const char *filename, const char *mode) |
| 342 | { |
| 343 | QEMUFileStdio *s; |
| 344 | |
Paolo Bonzini | 7f79dd2 | 2009-08-12 14:17:35 +0200 | [diff] [blame] | 345 | if (mode == NULL || |
| 346 | (mode[0] != 'r' && mode[0] != 'w') || |
| 347 | mode[1] != 'b' || mode[2] != 0) { |
| 348 | fprintf(stderr, "qemu_fdopen: Argument validity check failed\n"); |
| 349 | return NULL; |
| 350 | } |
| 351 | |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 352 | s = qemu_mallocz(sizeof(QEMUFileStdio)); |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 353 | |
Paolo Bonzini | 7f79dd2 | 2009-08-12 14:17:35 +0200 | [diff] [blame] | 354 | s->stdio_file = fopen(filename, mode); |
| 355 | if (!s->stdio_file) |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 356 | goto fail; |
| 357 | |
Paolo Bonzini | 7f79dd2 | 2009-08-12 14:17:35 +0200 | [diff] [blame] | 358 | if(mode[0] == 'w') { |
| 359 | s->file = qemu_fopen_ops(s, file_put_buffer, NULL, stdio_fclose, NULL, NULL); |
| 360 | } else { |
| 361 | s->file = qemu_fopen_ops(s, NULL, file_get_buffer, stdio_fclose, NULL, NULL); |
| 362 | } |
| 363 | return s->file; |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 364 | fail: |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 365 | qemu_free(s); |
| 366 | return NULL; |
| 367 | } |
| 368 | |
aliguori | 178e08a | 2009-04-05 19:10:55 +0000 | [diff] [blame] | 369 | static int block_put_buffer(void *opaque, const uint8_t *buf, |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 370 | int64_t pos, int size) |
| 371 | { |
Christoph Hellwig | 45566e9 | 2009-07-10 23:11:57 +0200 | [diff] [blame] | 372 | bdrv_save_vmstate(opaque, buf, pos, size); |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 373 | return size; |
| 374 | } |
| 375 | |
aliguori | 178e08a | 2009-04-05 19:10:55 +0000 | [diff] [blame] | 376 | static int block_get_buffer(void *opaque, uint8_t *buf, int64_t pos, int size) |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 377 | { |
Christoph Hellwig | 45566e9 | 2009-07-10 23:11:57 +0200 | [diff] [blame] | 378 | return bdrv_load_vmstate(opaque, buf, pos, size); |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 379 | } |
| 380 | |
| 381 | static int bdrv_fclose(void *opaque) |
| 382 | { |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 383 | return 0; |
| 384 | } |
| 385 | |
Christoph Hellwig | 45566e9 | 2009-07-10 23:11:57 +0200 | [diff] [blame] | 386 | static QEMUFile *qemu_fopen_bdrv(BlockDriverState *bs, int is_writable) |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 387 | { |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 388 | if (is_writable) |
Christoph Hellwig | 45566e9 | 2009-07-10 23:11:57 +0200 | [diff] [blame] | 389 | return qemu_fopen_ops(bs, block_put_buffer, NULL, bdrv_fclose, NULL, NULL); |
| 390 | return qemu_fopen_ops(bs, NULL, block_get_buffer, bdrv_fclose, NULL, NULL); |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 391 | } |
| 392 | |
| 393 | QEMUFile *qemu_fopen_ops(void *opaque, QEMUFilePutBufferFunc *put_buffer, |
| 394 | QEMUFileGetBufferFunc *get_buffer, |
| 395 | QEMUFileCloseFunc *close, |
Glauber Costa | 1962953 | 2009-05-20 18:26:57 -0400 | [diff] [blame] | 396 | QEMUFileRateLimit *rate_limit, |
| 397 | QEMUFileSetRateLimit *set_rate_limit) |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 398 | { |
| 399 | QEMUFile *f; |
| 400 | |
| 401 | f = qemu_mallocz(sizeof(QEMUFile)); |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 402 | |
| 403 | f->opaque = opaque; |
| 404 | f->put_buffer = put_buffer; |
| 405 | f->get_buffer = get_buffer; |
| 406 | f->close = close; |
| 407 | f->rate_limit = rate_limit; |
Glauber Costa | 1962953 | 2009-05-20 18:26:57 -0400 | [diff] [blame] | 408 | f->set_rate_limit = set_rate_limit; |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 409 | f->is_write = 0; |
| 410 | |
| 411 | return f; |
| 412 | } |
| 413 | |
| 414 | int qemu_file_has_error(QEMUFile *f) |
| 415 | { |
| 416 | return f->has_error; |
| 417 | } |
| 418 | |
aliguori | 4dabe24 | 2009-04-05 19:30:51 +0000 | [diff] [blame] | 419 | void qemu_file_set_error(QEMUFile *f) |
| 420 | { |
| 421 | f->has_error = 1; |
| 422 | } |
| 423 | |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 424 | void qemu_fflush(QEMUFile *f) |
| 425 | { |
| 426 | if (!f->put_buffer) |
| 427 | return; |
| 428 | |
| 429 | if (f->is_write && f->buf_index > 0) { |
| 430 | int len; |
| 431 | |
| 432 | len = f->put_buffer(f->opaque, f->buf, f->buf_offset, f->buf_index); |
| 433 | if (len > 0) |
| 434 | f->buf_offset += f->buf_index; |
| 435 | else |
| 436 | f->has_error = 1; |
| 437 | f->buf_index = 0; |
| 438 | } |
| 439 | } |
| 440 | |
| 441 | static void qemu_fill_buffer(QEMUFile *f) |
| 442 | { |
| 443 | int len; |
| 444 | |
| 445 | if (!f->get_buffer) |
| 446 | return; |
| 447 | |
| 448 | if (f->is_write) |
| 449 | abort(); |
| 450 | |
| 451 | len = f->get_buffer(f->opaque, f->buf, f->buf_offset, IO_BUF_SIZE); |
| 452 | if (len > 0) { |
| 453 | f->buf_index = 0; |
| 454 | f->buf_size = len; |
| 455 | f->buf_offset += len; |
| 456 | } else if (len != -EAGAIN) |
| 457 | f->has_error = 1; |
| 458 | } |
| 459 | |
| 460 | int qemu_fclose(QEMUFile *f) |
| 461 | { |
| 462 | int ret = 0; |
| 463 | qemu_fflush(f); |
| 464 | if (f->close) |
| 465 | ret = f->close(f->opaque); |
| 466 | qemu_free(f); |
| 467 | return ret; |
| 468 | } |
| 469 | |
| 470 | void qemu_file_put_notify(QEMUFile *f) |
| 471 | { |
| 472 | f->put_buffer(f->opaque, NULL, 0, 0); |
| 473 | } |
| 474 | |
| 475 | void qemu_put_buffer(QEMUFile *f, const uint8_t *buf, int size) |
| 476 | { |
| 477 | int l; |
| 478 | |
| 479 | if (!f->has_error && f->is_write == 0 && f->buf_index > 0) { |
| 480 | fprintf(stderr, |
| 481 | "Attempted to write to buffer while read buffer is not empty\n"); |
| 482 | abort(); |
| 483 | } |
| 484 | |
| 485 | while (!f->has_error && size > 0) { |
| 486 | l = IO_BUF_SIZE - f->buf_index; |
| 487 | if (l > size) |
| 488 | l = size; |
| 489 | memcpy(f->buf + f->buf_index, buf, l); |
| 490 | f->is_write = 1; |
| 491 | f->buf_index += l; |
| 492 | buf += l; |
| 493 | size -= l; |
| 494 | if (f->buf_index >= IO_BUF_SIZE) |
| 495 | qemu_fflush(f); |
| 496 | } |
| 497 | } |
| 498 | |
| 499 | void qemu_put_byte(QEMUFile *f, int v) |
| 500 | { |
| 501 | if (!f->has_error && f->is_write == 0 && f->buf_index > 0) { |
| 502 | fprintf(stderr, |
| 503 | "Attempted to write to buffer while read buffer is not empty\n"); |
| 504 | abort(); |
| 505 | } |
| 506 | |
| 507 | f->buf[f->buf_index++] = v; |
| 508 | f->is_write = 1; |
| 509 | if (f->buf_index >= IO_BUF_SIZE) |
| 510 | qemu_fflush(f); |
| 511 | } |
| 512 | |
| 513 | int qemu_get_buffer(QEMUFile *f, uint8_t *buf, int size1) |
| 514 | { |
| 515 | int size, l; |
| 516 | |
| 517 | if (f->is_write) |
| 518 | abort(); |
| 519 | |
| 520 | size = size1; |
| 521 | while (size > 0) { |
| 522 | l = f->buf_size - f->buf_index; |
| 523 | if (l == 0) { |
| 524 | qemu_fill_buffer(f); |
| 525 | l = f->buf_size - f->buf_index; |
| 526 | if (l == 0) |
| 527 | break; |
| 528 | } |
| 529 | if (l > size) |
| 530 | l = size; |
| 531 | memcpy(buf, f->buf + f->buf_index, l); |
| 532 | f->buf_index += l; |
| 533 | buf += l; |
| 534 | size -= l; |
| 535 | } |
| 536 | return size1 - size; |
| 537 | } |
| 538 | |
| 539 | int qemu_get_byte(QEMUFile *f) |
| 540 | { |
| 541 | if (f->is_write) |
| 542 | abort(); |
| 543 | |
| 544 | if (f->buf_index >= f->buf_size) { |
| 545 | qemu_fill_buffer(f); |
| 546 | if (f->buf_index >= f->buf_size) |
| 547 | return 0; |
| 548 | } |
| 549 | return f->buf[f->buf_index++]; |
| 550 | } |
| 551 | |
| 552 | int64_t qemu_ftell(QEMUFile *f) |
| 553 | { |
| 554 | return f->buf_offset - f->buf_size + f->buf_index; |
| 555 | } |
| 556 | |
| 557 | int64_t qemu_fseek(QEMUFile *f, int64_t pos, int whence) |
| 558 | { |
| 559 | if (whence == SEEK_SET) { |
| 560 | /* nothing to do */ |
| 561 | } else if (whence == SEEK_CUR) { |
| 562 | pos += qemu_ftell(f); |
| 563 | } else { |
| 564 | /* SEEK_END not supported */ |
| 565 | return -1; |
| 566 | } |
| 567 | if (f->put_buffer) { |
| 568 | qemu_fflush(f); |
| 569 | f->buf_offset = pos; |
| 570 | } else { |
| 571 | f->buf_offset = pos; |
| 572 | f->buf_index = 0; |
| 573 | f->buf_size = 0; |
| 574 | } |
| 575 | return pos; |
| 576 | } |
| 577 | |
| 578 | int qemu_file_rate_limit(QEMUFile *f) |
| 579 | { |
| 580 | if (f->rate_limit) |
| 581 | return f->rate_limit(f->opaque); |
| 582 | |
| 583 | return 0; |
| 584 | } |
| 585 | |
Glauber Costa | 1962953 | 2009-05-20 18:26:57 -0400 | [diff] [blame] | 586 | size_t qemu_file_set_rate_limit(QEMUFile *f, size_t new_rate) |
| 587 | { |
Glauber Costa | 0bb05ea | 2009-07-14 18:26:51 -0400 | [diff] [blame] | 588 | /* any failed or completed migration keeps its state to allow probing of |
| 589 | * migration data, but has no associated file anymore */ |
| 590 | if (f && f->set_rate_limit) |
Glauber Costa | 1962953 | 2009-05-20 18:26:57 -0400 | [diff] [blame] | 591 | return f->set_rate_limit(f->opaque, new_rate); |
| 592 | |
| 593 | return 0; |
| 594 | } |
| 595 | |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 596 | void qemu_put_be16(QEMUFile *f, unsigned int v) |
| 597 | { |
| 598 | qemu_put_byte(f, v >> 8); |
| 599 | qemu_put_byte(f, v); |
| 600 | } |
| 601 | |
| 602 | void qemu_put_be32(QEMUFile *f, unsigned int v) |
| 603 | { |
| 604 | qemu_put_byte(f, v >> 24); |
| 605 | qemu_put_byte(f, v >> 16); |
| 606 | qemu_put_byte(f, v >> 8); |
| 607 | qemu_put_byte(f, v); |
| 608 | } |
| 609 | |
| 610 | void qemu_put_be64(QEMUFile *f, uint64_t v) |
| 611 | { |
| 612 | qemu_put_be32(f, v >> 32); |
| 613 | qemu_put_be32(f, v); |
| 614 | } |
| 615 | |
| 616 | unsigned int qemu_get_be16(QEMUFile *f) |
| 617 | { |
| 618 | unsigned int v; |
| 619 | v = qemu_get_byte(f) << 8; |
| 620 | v |= qemu_get_byte(f); |
| 621 | return v; |
| 622 | } |
| 623 | |
| 624 | unsigned int qemu_get_be32(QEMUFile *f) |
| 625 | { |
| 626 | unsigned int v; |
| 627 | v = qemu_get_byte(f) << 24; |
| 628 | v |= qemu_get_byte(f) << 16; |
| 629 | v |= qemu_get_byte(f) << 8; |
| 630 | v |= qemu_get_byte(f); |
| 631 | return v; |
| 632 | } |
| 633 | |
| 634 | uint64_t qemu_get_be64(QEMUFile *f) |
| 635 | { |
| 636 | uint64_t v; |
| 637 | v = (uint64_t)qemu_get_be32(f) << 32; |
| 638 | v |= qemu_get_be32(f); |
| 639 | return v; |
| 640 | } |
| 641 | |
Juan Quintela | 9ed7d6a | 2009-08-20 19:42:25 +0200 | [diff] [blame] | 642 | /* 8 bit int */ |
| 643 | |
| 644 | static int get_int8(QEMUFile *f, void *pv, size_t size) |
| 645 | { |
| 646 | int8_t *v = pv; |
| 647 | qemu_get_s8s(f, v); |
| 648 | return 0; |
| 649 | } |
| 650 | |
| 651 | static void put_int8(QEMUFile *f, const void *pv, size_t size) |
| 652 | { |
| 653 | const int8_t *v = pv; |
| 654 | qemu_put_s8s(f, v); |
| 655 | } |
| 656 | |
| 657 | const VMStateInfo vmstate_info_int8 = { |
| 658 | .name = "int8", |
| 659 | .get = get_int8, |
| 660 | .put = put_int8, |
| 661 | }; |
| 662 | |
| 663 | /* 16 bit int */ |
| 664 | |
| 665 | static int get_int16(QEMUFile *f, void *pv, size_t size) |
| 666 | { |
| 667 | int16_t *v = pv; |
| 668 | qemu_get_sbe16s(f, v); |
| 669 | return 0; |
| 670 | } |
| 671 | |
| 672 | static void put_int16(QEMUFile *f, const void *pv, size_t size) |
| 673 | { |
| 674 | const int16_t *v = pv; |
| 675 | qemu_put_sbe16s(f, v); |
| 676 | } |
| 677 | |
| 678 | const VMStateInfo vmstate_info_int16 = { |
| 679 | .name = "int16", |
| 680 | .get = get_int16, |
| 681 | .put = put_int16, |
| 682 | }; |
| 683 | |
| 684 | /* 32 bit int */ |
| 685 | |
| 686 | static int get_int32(QEMUFile *f, void *pv, size_t size) |
| 687 | { |
| 688 | int32_t *v = pv; |
| 689 | qemu_get_sbe32s(f, v); |
| 690 | return 0; |
| 691 | } |
| 692 | |
| 693 | static void put_int32(QEMUFile *f, const void *pv, size_t size) |
| 694 | { |
| 695 | const int32_t *v = pv; |
| 696 | qemu_put_sbe32s(f, v); |
| 697 | } |
| 698 | |
| 699 | const VMStateInfo vmstate_info_int32 = { |
| 700 | .name = "int32", |
| 701 | .get = get_int32, |
| 702 | .put = put_int32, |
| 703 | }; |
| 704 | |
| 705 | /* 64 bit int */ |
| 706 | |
| 707 | static int get_int64(QEMUFile *f, void *pv, size_t size) |
| 708 | { |
| 709 | int64_t *v = pv; |
| 710 | qemu_get_sbe64s(f, v); |
| 711 | return 0; |
| 712 | } |
| 713 | |
| 714 | static void put_int64(QEMUFile *f, const void *pv, size_t size) |
| 715 | { |
| 716 | const int64_t *v = pv; |
| 717 | qemu_put_sbe64s(f, v); |
| 718 | } |
| 719 | |
| 720 | const VMStateInfo vmstate_info_int64 = { |
| 721 | .name = "int64", |
| 722 | .get = get_int64, |
| 723 | .put = put_int64, |
| 724 | }; |
| 725 | |
| 726 | /* 8 bit unsigned int */ |
| 727 | |
| 728 | static int get_uint8(QEMUFile *f, void *pv, size_t size) |
| 729 | { |
| 730 | uint8_t *v = pv; |
| 731 | qemu_get_8s(f, v); |
| 732 | return 0; |
| 733 | } |
| 734 | |
| 735 | static void put_uint8(QEMUFile *f, const void *pv, size_t size) |
| 736 | { |
| 737 | const uint8_t *v = pv; |
| 738 | qemu_put_8s(f, v); |
| 739 | } |
| 740 | |
| 741 | const VMStateInfo vmstate_info_uint8 = { |
| 742 | .name = "uint8", |
| 743 | .get = get_uint8, |
| 744 | .put = put_uint8, |
| 745 | }; |
| 746 | |
| 747 | /* 16 bit unsigned int */ |
| 748 | |
| 749 | static int get_uint16(QEMUFile *f, void *pv, size_t size) |
| 750 | { |
| 751 | uint16_t *v = pv; |
| 752 | qemu_get_be16s(f, v); |
| 753 | return 0; |
| 754 | } |
| 755 | |
| 756 | static void put_uint16(QEMUFile *f, const void *pv, size_t size) |
| 757 | { |
| 758 | const uint16_t *v = pv; |
| 759 | qemu_put_be16s(f, v); |
| 760 | } |
| 761 | |
| 762 | const VMStateInfo vmstate_info_uint16 = { |
| 763 | .name = "uint16", |
| 764 | .get = get_uint16, |
| 765 | .put = put_uint16, |
| 766 | }; |
| 767 | |
| 768 | /* 32 bit unsigned int */ |
| 769 | |
| 770 | static int get_uint32(QEMUFile *f, void *pv, size_t size) |
| 771 | { |
| 772 | uint32_t *v = pv; |
| 773 | qemu_get_be32s(f, v); |
| 774 | return 0; |
| 775 | } |
| 776 | |
| 777 | static void put_uint32(QEMUFile *f, const void *pv, size_t size) |
| 778 | { |
| 779 | const uint32_t *v = pv; |
| 780 | qemu_put_be32s(f, v); |
| 781 | } |
| 782 | |
| 783 | const VMStateInfo vmstate_info_uint32 = { |
| 784 | .name = "uint32", |
| 785 | .get = get_uint32, |
| 786 | .put = put_uint32, |
| 787 | }; |
| 788 | |
| 789 | /* 64 bit unsigned int */ |
| 790 | |
| 791 | static int get_uint64(QEMUFile *f, void *pv, size_t size) |
| 792 | { |
| 793 | uint64_t *v = pv; |
| 794 | qemu_get_be64s(f, v); |
| 795 | return 0; |
| 796 | } |
| 797 | |
| 798 | static void put_uint64(QEMUFile *f, const void *pv, size_t size) |
| 799 | { |
| 800 | const uint64_t *v = pv; |
| 801 | qemu_put_be64s(f, v); |
| 802 | } |
| 803 | |
| 804 | const VMStateInfo vmstate_info_uint64 = { |
| 805 | .name = "uint64", |
| 806 | .get = get_uint64, |
| 807 | .put = put_uint64, |
| 808 | }; |
| 809 | |
Juan Quintela | dde0463 | 2009-08-20 19:42:26 +0200 | [diff] [blame^] | 810 | /* timers */ |
| 811 | |
| 812 | static int get_timer(QEMUFile *f, void *pv, size_t size) |
| 813 | { |
| 814 | QEMUTimer *v = pv; |
| 815 | qemu_get_timer(f, v); |
| 816 | return 0; |
| 817 | } |
| 818 | |
| 819 | static void put_timer(QEMUFile *f, const void *pv, size_t size) |
| 820 | { |
| 821 | QEMUTimer *v = (void *)pv; |
| 822 | qemu_put_timer(f, v); |
| 823 | } |
| 824 | |
| 825 | const VMStateInfo vmstate_info_timer = { |
| 826 | .name = "timer", |
| 827 | .get = get_timer, |
| 828 | .put = put_timer, |
| 829 | }; |
| 830 | |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 831 | typedef struct SaveStateEntry { |
| 832 | char idstr[256]; |
| 833 | int instance_id; |
| 834 | int version_id; |
| 835 | int section_id; |
| 836 | SaveLiveStateHandler *save_live_state; |
| 837 | SaveStateHandler *save_state; |
| 838 | LoadStateHandler *load_state; |
Juan Quintela | 9ed7d6a | 2009-08-20 19:42:25 +0200 | [diff] [blame] | 839 | const VMStateDescription *vmsd; |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 840 | void *opaque; |
| 841 | struct SaveStateEntry *next; |
| 842 | } SaveStateEntry; |
| 843 | |
| 844 | static SaveStateEntry *first_se; |
Juan Quintela | 9ed7d6a | 2009-08-20 19:42:25 +0200 | [diff] [blame] | 845 | static int global_section_id; |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 846 | |
| 847 | /* TODO: Individual devices generally have very little idea about the rest |
| 848 | of the system, so instance_id should be removed/replaced. |
| 849 | Meanwhile pass -1 as instance_id if you do not already have a clearly |
| 850 | distinguishing id for all instances of your device class. */ |
| 851 | int register_savevm_live(const char *idstr, |
| 852 | int instance_id, |
| 853 | int version_id, |
| 854 | SaveLiveStateHandler *save_live_state, |
| 855 | SaveStateHandler *save_state, |
| 856 | LoadStateHandler *load_state, |
| 857 | void *opaque) |
| 858 | { |
| 859 | SaveStateEntry *se, **pse; |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 860 | |
| 861 | se = qemu_malloc(sizeof(SaveStateEntry)); |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 862 | pstrcpy(se->idstr, sizeof(se->idstr), idstr); |
| 863 | se->instance_id = (instance_id == -1) ? 0 : instance_id; |
| 864 | se->version_id = version_id; |
| 865 | se->section_id = global_section_id++; |
| 866 | se->save_live_state = save_live_state; |
| 867 | se->save_state = save_state; |
| 868 | se->load_state = load_state; |
| 869 | se->opaque = opaque; |
Juan Quintela | 9ed7d6a | 2009-08-20 19:42:25 +0200 | [diff] [blame] | 870 | se->vmsd = NULL; |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 871 | se->next = NULL; |
| 872 | |
| 873 | /* add at the end of list */ |
| 874 | pse = &first_se; |
| 875 | while (*pse != NULL) { |
| 876 | if (instance_id == -1 |
| 877 | && strcmp(se->idstr, (*pse)->idstr) == 0 |
| 878 | && se->instance_id <= (*pse)->instance_id) |
| 879 | se->instance_id = (*pse)->instance_id + 1; |
| 880 | pse = &(*pse)->next; |
| 881 | } |
| 882 | *pse = se; |
| 883 | return 0; |
| 884 | } |
| 885 | |
| 886 | int register_savevm(const char *idstr, |
| 887 | int instance_id, |
| 888 | int version_id, |
| 889 | SaveStateHandler *save_state, |
| 890 | LoadStateHandler *load_state, |
| 891 | void *opaque) |
| 892 | { |
| 893 | return register_savevm_live(idstr, instance_id, version_id, |
| 894 | NULL, save_state, load_state, opaque); |
| 895 | } |
| 896 | |
aliguori | 41bd13a | 2009-04-17 17:10:59 +0000 | [diff] [blame] | 897 | void unregister_savevm(const char *idstr, void *opaque) |
| 898 | { |
| 899 | SaveStateEntry **pse; |
| 900 | |
| 901 | pse = &first_se; |
| 902 | while (*pse != NULL) { |
| 903 | if (strcmp((*pse)->idstr, idstr) == 0 && (*pse)->opaque == opaque) { |
| 904 | SaveStateEntry *next = (*pse)->next; |
| 905 | qemu_free(*pse); |
| 906 | *pse = next; |
| 907 | continue; |
| 908 | } |
| 909 | pse = &(*pse)->next; |
| 910 | } |
| 911 | } |
| 912 | |
Juan Quintela | 9ed7d6a | 2009-08-20 19:42:25 +0200 | [diff] [blame] | 913 | int vmstate_register(int instance_id, const VMStateDescription *vmsd, |
| 914 | void *opaque) |
| 915 | { |
| 916 | SaveStateEntry *se, **pse; |
| 917 | |
| 918 | se = qemu_malloc(sizeof(SaveStateEntry)); |
| 919 | pstrcpy(se->idstr, sizeof(se->idstr), vmsd->name); |
| 920 | se->instance_id = (instance_id == -1) ? 0 : instance_id; |
| 921 | se->version_id = vmsd->version_id; |
| 922 | se->section_id = global_section_id++; |
| 923 | se->save_live_state = NULL; |
| 924 | se->save_state = NULL; |
| 925 | se->load_state = NULL; |
| 926 | se->opaque = opaque; |
| 927 | se->vmsd = vmsd; |
| 928 | se->next = NULL; |
| 929 | |
| 930 | /* add at the end of list */ |
| 931 | pse = &first_se; |
| 932 | while (*pse != NULL) { |
| 933 | if (instance_id == -1 |
| 934 | && strcmp(se->idstr, (*pse)->idstr) == 0 |
| 935 | && se->instance_id <= (*pse)->instance_id) |
| 936 | se->instance_id = (*pse)->instance_id + 1; |
| 937 | pse = &(*pse)->next; |
| 938 | } |
| 939 | *pse = se; |
| 940 | return 0; |
| 941 | } |
| 942 | |
| 943 | void vmstate_unregister(const char *idstr, void *opaque) |
| 944 | { |
| 945 | SaveStateEntry **pse; |
| 946 | |
| 947 | pse = &first_se; |
| 948 | while (*pse != NULL) { |
| 949 | if (strcmp((*pse)->idstr, idstr) == 0 && (*pse)->opaque == opaque) { |
| 950 | SaveStateEntry *next = (*pse)->next; |
| 951 | qemu_free(*pse); |
| 952 | *pse = next; |
| 953 | continue; |
| 954 | } |
| 955 | pse = &(*pse)->next; |
| 956 | } |
| 957 | } |
| 958 | |
| 959 | int vmstate_load_state(QEMUFile *f, const VMStateDescription *vmsd, |
| 960 | void *opaque, int version_id) |
| 961 | { |
| 962 | VMStateField *field = vmsd->fields; |
| 963 | |
| 964 | if (version_id > vmsd->version_id) { |
| 965 | return -EINVAL; |
| 966 | } |
| 967 | if (version_id < vmsd->minimum_version_id_old) { |
| 968 | return -EINVAL; |
| 969 | } |
| 970 | if (version_id < vmsd->minimum_version_id) { |
| 971 | return vmsd->load_state_old(f, opaque, version_id); |
| 972 | } |
| 973 | while(field->name) { |
| 974 | if (field->version_id <= version_id) { |
| 975 | void *addr = opaque + field->offset; |
| 976 | int ret; |
| 977 | |
Juan Quintela | dde0463 | 2009-08-20 19:42:26 +0200 | [diff] [blame^] | 978 | if (field->flags & VMS_POINTER) { |
| 979 | addr = *(void **)addr; |
| 980 | } |
Juan Quintela | 9ed7d6a | 2009-08-20 19:42:25 +0200 | [diff] [blame] | 981 | ret = field->info->get(f, addr, field->size); |
| 982 | if (ret < 0) { |
| 983 | return ret; |
| 984 | } |
| 985 | } |
| 986 | field++; |
| 987 | } |
| 988 | return 0; |
| 989 | } |
| 990 | |
| 991 | void vmstate_save_state(QEMUFile *f, const VMStateDescription *vmsd, |
| 992 | const void *opaque) |
| 993 | { |
| 994 | VMStateField *field = vmsd->fields; |
| 995 | |
| 996 | while(field->name) { |
| 997 | const void *addr = opaque + field->offset; |
Juan Quintela | dde0463 | 2009-08-20 19:42:26 +0200 | [diff] [blame^] | 998 | |
| 999 | if (field->flags & VMS_POINTER) { |
| 1000 | addr = *(void **)addr; |
| 1001 | } |
Juan Quintela | 9ed7d6a | 2009-08-20 19:42:25 +0200 | [diff] [blame] | 1002 | field->info->put(f, addr, field->size); |
| 1003 | field++; |
| 1004 | } |
| 1005 | } |
| 1006 | |
Juan Quintela | 4082be4 | 2009-08-20 19:42:24 +0200 | [diff] [blame] | 1007 | static int vmstate_load(QEMUFile *f, SaveStateEntry *se, int version_id) |
| 1008 | { |
Juan Quintela | 9ed7d6a | 2009-08-20 19:42:25 +0200 | [diff] [blame] | 1009 | if (!se->vmsd) { /* Old style */ |
| 1010 | return se->load_state(f, se->opaque, version_id); |
| 1011 | } |
| 1012 | return vmstate_load_state(f, se->vmsd, se->opaque, version_id); |
Juan Quintela | 4082be4 | 2009-08-20 19:42:24 +0200 | [diff] [blame] | 1013 | } |
| 1014 | |
| 1015 | static void vmstate_save(QEMUFile *f, SaveStateEntry *se) |
| 1016 | { |
Juan Quintela | 9ed7d6a | 2009-08-20 19:42:25 +0200 | [diff] [blame] | 1017 | if (!se->vmsd) { /* Old style */ |
| 1018 | se->save_state(f, se->opaque); |
| 1019 | return; |
| 1020 | } |
| 1021 | vmstate_save_state(f,se->vmsd, se->opaque); |
Juan Quintela | 4082be4 | 2009-08-20 19:42:24 +0200 | [diff] [blame] | 1022 | } |
| 1023 | |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 1024 | #define QEMU_VM_FILE_MAGIC 0x5145564d |
| 1025 | #define QEMU_VM_FILE_VERSION_COMPAT 0x00000002 |
| 1026 | #define QEMU_VM_FILE_VERSION 0x00000003 |
| 1027 | |
| 1028 | #define QEMU_VM_EOF 0x00 |
| 1029 | #define QEMU_VM_SECTION_START 0x01 |
| 1030 | #define QEMU_VM_SECTION_PART 0x02 |
| 1031 | #define QEMU_VM_SECTION_END 0x03 |
| 1032 | #define QEMU_VM_SECTION_FULL 0x04 |
| 1033 | |
| 1034 | int qemu_savevm_state_begin(QEMUFile *f) |
| 1035 | { |
| 1036 | SaveStateEntry *se; |
| 1037 | |
| 1038 | qemu_put_be32(f, QEMU_VM_FILE_MAGIC); |
| 1039 | qemu_put_be32(f, QEMU_VM_FILE_VERSION); |
| 1040 | |
| 1041 | for (se = first_se; se != NULL; se = se->next) { |
| 1042 | int len; |
| 1043 | |
| 1044 | if (se->save_live_state == NULL) |
| 1045 | continue; |
| 1046 | |
| 1047 | /* Section type */ |
| 1048 | qemu_put_byte(f, QEMU_VM_SECTION_START); |
| 1049 | qemu_put_be32(f, se->section_id); |
| 1050 | |
| 1051 | /* ID string */ |
| 1052 | len = strlen(se->idstr); |
| 1053 | qemu_put_byte(f, len); |
| 1054 | qemu_put_buffer(f, (uint8_t *)se->idstr, len); |
| 1055 | |
| 1056 | qemu_put_be32(f, se->instance_id); |
| 1057 | qemu_put_be32(f, se->version_id); |
| 1058 | |
| 1059 | se->save_live_state(f, QEMU_VM_SECTION_START, se->opaque); |
| 1060 | } |
| 1061 | |
| 1062 | if (qemu_file_has_error(f)) |
| 1063 | return -EIO; |
| 1064 | |
| 1065 | return 0; |
| 1066 | } |
| 1067 | |
| 1068 | int qemu_savevm_state_iterate(QEMUFile *f) |
| 1069 | { |
| 1070 | SaveStateEntry *se; |
| 1071 | int ret = 1; |
| 1072 | |
| 1073 | for (se = first_se; se != NULL; se = se->next) { |
| 1074 | if (se->save_live_state == NULL) |
| 1075 | continue; |
| 1076 | |
| 1077 | /* Section type */ |
| 1078 | qemu_put_byte(f, QEMU_VM_SECTION_PART); |
| 1079 | qemu_put_be32(f, se->section_id); |
| 1080 | |
| 1081 | ret &= !!se->save_live_state(f, QEMU_VM_SECTION_PART, se->opaque); |
| 1082 | } |
| 1083 | |
| 1084 | if (ret) |
| 1085 | return 1; |
| 1086 | |
| 1087 | if (qemu_file_has_error(f)) |
| 1088 | return -EIO; |
| 1089 | |
| 1090 | return 0; |
| 1091 | } |
| 1092 | |
| 1093 | int qemu_savevm_state_complete(QEMUFile *f) |
| 1094 | { |
| 1095 | SaveStateEntry *se; |
| 1096 | |
| 1097 | for (se = first_se; se != NULL; se = se->next) { |
| 1098 | if (se->save_live_state == NULL) |
| 1099 | continue; |
| 1100 | |
| 1101 | /* Section type */ |
| 1102 | qemu_put_byte(f, QEMU_VM_SECTION_END); |
| 1103 | qemu_put_be32(f, se->section_id); |
| 1104 | |
| 1105 | se->save_live_state(f, QEMU_VM_SECTION_END, se->opaque); |
| 1106 | } |
| 1107 | |
| 1108 | for(se = first_se; se != NULL; se = se->next) { |
| 1109 | int len; |
| 1110 | |
Juan Quintela | 9ed7d6a | 2009-08-20 19:42:25 +0200 | [diff] [blame] | 1111 | if (se->save_state == NULL && se->vmsd == NULL) |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 1112 | continue; |
| 1113 | |
| 1114 | /* Section type */ |
| 1115 | qemu_put_byte(f, QEMU_VM_SECTION_FULL); |
| 1116 | qemu_put_be32(f, se->section_id); |
| 1117 | |
| 1118 | /* ID string */ |
| 1119 | len = strlen(se->idstr); |
| 1120 | qemu_put_byte(f, len); |
| 1121 | qemu_put_buffer(f, (uint8_t *)se->idstr, len); |
| 1122 | |
| 1123 | qemu_put_be32(f, se->instance_id); |
| 1124 | qemu_put_be32(f, se->version_id); |
| 1125 | |
Juan Quintela | 4082be4 | 2009-08-20 19:42:24 +0200 | [diff] [blame] | 1126 | vmstate_save(f, se); |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 1127 | } |
| 1128 | |
| 1129 | qemu_put_byte(f, QEMU_VM_EOF); |
| 1130 | |
| 1131 | if (qemu_file_has_error(f)) |
| 1132 | return -EIO; |
| 1133 | |
| 1134 | return 0; |
| 1135 | } |
| 1136 | |
| 1137 | int qemu_savevm_state(QEMUFile *f) |
| 1138 | { |
| 1139 | int saved_vm_running; |
| 1140 | int ret; |
| 1141 | |
| 1142 | saved_vm_running = vm_running; |
| 1143 | vm_stop(0); |
| 1144 | |
| 1145 | bdrv_flush_all(); |
| 1146 | |
| 1147 | ret = qemu_savevm_state_begin(f); |
| 1148 | if (ret < 0) |
| 1149 | goto out; |
| 1150 | |
| 1151 | do { |
| 1152 | ret = qemu_savevm_state_iterate(f); |
| 1153 | if (ret < 0) |
| 1154 | goto out; |
| 1155 | } while (ret == 0); |
| 1156 | |
| 1157 | ret = qemu_savevm_state_complete(f); |
| 1158 | |
| 1159 | out: |
| 1160 | if (qemu_file_has_error(f)) |
| 1161 | ret = -EIO; |
| 1162 | |
| 1163 | if (!ret && saved_vm_running) |
| 1164 | vm_start(); |
| 1165 | |
| 1166 | return ret; |
| 1167 | } |
| 1168 | |
| 1169 | static SaveStateEntry *find_se(const char *idstr, int instance_id) |
| 1170 | { |
| 1171 | SaveStateEntry *se; |
| 1172 | |
| 1173 | for(se = first_se; se != NULL; se = se->next) { |
| 1174 | if (!strcmp(se->idstr, idstr) && |
| 1175 | instance_id == se->instance_id) |
| 1176 | return se; |
| 1177 | } |
| 1178 | return NULL; |
| 1179 | } |
| 1180 | |
| 1181 | typedef struct LoadStateEntry { |
| 1182 | SaveStateEntry *se; |
| 1183 | int section_id; |
| 1184 | int version_id; |
| 1185 | struct LoadStateEntry *next; |
| 1186 | } LoadStateEntry; |
| 1187 | |
| 1188 | static int qemu_loadvm_state_v2(QEMUFile *f) |
| 1189 | { |
| 1190 | SaveStateEntry *se; |
| 1191 | int len, ret, instance_id, record_len, version_id; |
| 1192 | int64_t total_len, end_pos, cur_pos; |
| 1193 | char idstr[256]; |
| 1194 | |
| 1195 | total_len = qemu_get_be64(f); |
| 1196 | end_pos = total_len + qemu_ftell(f); |
| 1197 | for(;;) { |
| 1198 | if (qemu_ftell(f) >= end_pos) |
| 1199 | break; |
| 1200 | len = qemu_get_byte(f); |
| 1201 | qemu_get_buffer(f, (uint8_t *)idstr, len); |
| 1202 | idstr[len] = '\0'; |
| 1203 | instance_id = qemu_get_be32(f); |
| 1204 | version_id = qemu_get_be32(f); |
| 1205 | record_len = qemu_get_be32(f); |
| 1206 | cur_pos = qemu_ftell(f); |
| 1207 | se = find_se(idstr, instance_id); |
| 1208 | if (!se) { |
| 1209 | fprintf(stderr, "qemu: warning: instance 0x%x of device '%s' not present in current VM\n", |
| 1210 | instance_id, idstr); |
| 1211 | } else { |
Juan Quintela | 4082be4 | 2009-08-20 19:42:24 +0200 | [diff] [blame] | 1212 | ret = vmstate_load(f, se, version_id); |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 1213 | if (ret < 0) { |
| 1214 | fprintf(stderr, "qemu: warning: error while loading state for instance 0x%x of device '%s'\n", |
| 1215 | instance_id, idstr); |
Anthony Liguori | d02f709 | 2009-05-01 09:36:03 -0500 | [diff] [blame] | 1216 | return ret; |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 1217 | } |
| 1218 | } |
| 1219 | /* always seek to exact end of record */ |
| 1220 | qemu_fseek(f, cur_pos + record_len, SEEK_SET); |
| 1221 | } |
| 1222 | |
| 1223 | if (qemu_file_has_error(f)) |
| 1224 | return -EIO; |
| 1225 | |
| 1226 | return 0; |
| 1227 | } |
| 1228 | |
| 1229 | int qemu_loadvm_state(QEMUFile *f) |
| 1230 | { |
| 1231 | LoadStateEntry *first_le = NULL; |
| 1232 | uint8_t section_type; |
| 1233 | unsigned int v; |
| 1234 | int ret; |
| 1235 | |
| 1236 | v = qemu_get_be32(f); |
| 1237 | if (v != QEMU_VM_FILE_MAGIC) |
| 1238 | return -EINVAL; |
| 1239 | |
| 1240 | v = qemu_get_be32(f); |
| 1241 | if (v == QEMU_VM_FILE_VERSION_COMPAT) |
| 1242 | return qemu_loadvm_state_v2(f); |
| 1243 | if (v != QEMU_VM_FILE_VERSION) |
| 1244 | return -ENOTSUP; |
| 1245 | |
| 1246 | while ((section_type = qemu_get_byte(f)) != QEMU_VM_EOF) { |
| 1247 | uint32_t instance_id, version_id, section_id; |
| 1248 | LoadStateEntry *le; |
| 1249 | SaveStateEntry *se; |
| 1250 | char idstr[257]; |
| 1251 | int len; |
| 1252 | |
| 1253 | switch (section_type) { |
| 1254 | case QEMU_VM_SECTION_START: |
| 1255 | case QEMU_VM_SECTION_FULL: |
| 1256 | /* Read section start */ |
| 1257 | section_id = qemu_get_be32(f); |
| 1258 | len = qemu_get_byte(f); |
| 1259 | qemu_get_buffer(f, (uint8_t *)idstr, len); |
| 1260 | idstr[len] = 0; |
| 1261 | instance_id = qemu_get_be32(f); |
| 1262 | version_id = qemu_get_be32(f); |
| 1263 | |
| 1264 | /* Find savevm section */ |
| 1265 | se = find_se(idstr, instance_id); |
| 1266 | if (se == NULL) { |
| 1267 | fprintf(stderr, "Unknown savevm section or instance '%s' %d\n", idstr, instance_id); |
| 1268 | ret = -EINVAL; |
| 1269 | goto out; |
| 1270 | } |
| 1271 | |
| 1272 | /* Validate version */ |
| 1273 | if (version_id > se->version_id) { |
| 1274 | fprintf(stderr, "savevm: unsupported version %d for '%s' v%d\n", |
| 1275 | version_id, idstr, se->version_id); |
| 1276 | ret = -EINVAL; |
| 1277 | goto out; |
| 1278 | } |
| 1279 | |
| 1280 | /* Add entry */ |
| 1281 | le = qemu_mallocz(sizeof(*le)); |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 1282 | |
| 1283 | le->se = se; |
| 1284 | le->section_id = section_id; |
| 1285 | le->version_id = version_id; |
| 1286 | le->next = first_le; |
| 1287 | first_le = le; |
| 1288 | |
Juan Quintela | 4082be4 | 2009-08-20 19:42:24 +0200 | [diff] [blame] | 1289 | ret = vmstate_load(f, le->se, le->version_id); |
Juan Quintela | b5a22e4 | 2009-08-20 19:42:23 +0200 | [diff] [blame] | 1290 | if (ret < 0) { |
| 1291 | fprintf(stderr, "qemu: warning: error while loading state for instance 0x%x of device '%s'\n", |
| 1292 | instance_id, idstr); |
| 1293 | goto out; |
| 1294 | } |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 1295 | break; |
| 1296 | case QEMU_VM_SECTION_PART: |
| 1297 | case QEMU_VM_SECTION_END: |
| 1298 | section_id = qemu_get_be32(f); |
| 1299 | |
| 1300 | for (le = first_le; le && le->section_id != section_id; le = le->next); |
| 1301 | if (le == NULL) { |
| 1302 | fprintf(stderr, "Unknown savevm section %d\n", section_id); |
| 1303 | ret = -EINVAL; |
| 1304 | goto out; |
| 1305 | } |
| 1306 | |
Juan Quintela | 4082be4 | 2009-08-20 19:42:24 +0200 | [diff] [blame] | 1307 | ret = vmstate_load(f, le->se, le->version_id); |
Juan Quintela | b5a22e4 | 2009-08-20 19:42:23 +0200 | [diff] [blame] | 1308 | if (ret < 0) { |
| 1309 | fprintf(stderr, "qemu: warning: error while loading state section id %d\n", |
| 1310 | section_id); |
| 1311 | goto out; |
| 1312 | } |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 1313 | break; |
| 1314 | default: |
| 1315 | fprintf(stderr, "Unknown savevm section type %d\n", section_type); |
| 1316 | ret = -EINVAL; |
| 1317 | goto out; |
| 1318 | } |
| 1319 | } |
| 1320 | |
| 1321 | ret = 0; |
| 1322 | |
| 1323 | out: |
| 1324 | while (first_le) { |
| 1325 | LoadStateEntry *le = first_le; |
| 1326 | first_le = first_le->next; |
| 1327 | qemu_free(le); |
| 1328 | } |
| 1329 | |
| 1330 | if (qemu_file_has_error(f)) |
| 1331 | ret = -EIO; |
| 1332 | |
| 1333 | return ret; |
| 1334 | } |
| 1335 | |
| 1336 | /* device can contain snapshots */ |
| 1337 | static int bdrv_can_snapshot(BlockDriverState *bs) |
| 1338 | { |
| 1339 | return (bs && |
| 1340 | !bdrv_is_removable(bs) && |
| 1341 | !bdrv_is_read_only(bs)); |
| 1342 | } |
| 1343 | |
| 1344 | /* device must be snapshots in order to have a reliable snapshot */ |
| 1345 | static int bdrv_has_snapshot(BlockDriverState *bs) |
| 1346 | { |
| 1347 | return (bs && |
| 1348 | !bdrv_is_removable(bs) && |
| 1349 | !bdrv_is_read_only(bs)); |
| 1350 | } |
| 1351 | |
| 1352 | static BlockDriverState *get_bs_snapshots(void) |
| 1353 | { |
| 1354 | BlockDriverState *bs; |
Gerd Hoffmann | 751c6a1 | 2009-07-22 16:42:57 +0200 | [diff] [blame] | 1355 | DriveInfo *dinfo; |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 1356 | |
| 1357 | if (bs_snapshots) |
| 1358 | return bs_snapshots; |
Gerd Hoffmann | 751c6a1 | 2009-07-22 16:42:57 +0200 | [diff] [blame] | 1359 | TAILQ_FOREACH(dinfo, &drives, next) { |
| 1360 | bs = dinfo->bdrv; |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 1361 | if (bdrv_can_snapshot(bs)) |
| 1362 | goto ok; |
| 1363 | } |
| 1364 | return NULL; |
| 1365 | ok: |
| 1366 | bs_snapshots = bs; |
| 1367 | return bs; |
| 1368 | } |
| 1369 | |
| 1370 | static int bdrv_snapshot_find(BlockDriverState *bs, QEMUSnapshotInfo *sn_info, |
| 1371 | const char *name) |
| 1372 | { |
| 1373 | QEMUSnapshotInfo *sn_tab, *sn; |
| 1374 | int nb_sns, i, ret; |
| 1375 | |
| 1376 | ret = -ENOENT; |
| 1377 | nb_sns = bdrv_snapshot_list(bs, &sn_tab); |
| 1378 | if (nb_sns < 0) |
| 1379 | return ret; |
| 1380 | for(i = 0; i < nb_sns; i++) { |
| 1381 | sn = &sn_tab[i]; |
| 1382 | if (!strcmp(sn->id_str, name) || !strcmp(sn->name, name)) { |
| 1383 | *sn_info = *sn; |
| 1384 | ret = 0; |
| 1385 | break; |
| 1386 | } |
| 1387 | } |
| 1388 | qemu_free(sn_tab); |
| 1389 | return ret; |
| 1390 | } |
| 1391 | |
aliguori | 376253e | 2009-03-05 23:01:23 +0000 | [diff] [blame] | 1392 | void do_savevm(Monitor *mon, const char *name) |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 1393 | { |
Gerd Hoffmann | 751c6a1 | 2009-07-22 16:42:57 +0200 | [diff] [blame] | 1394 | DriveInfo *dinfo; |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 1395 | BlockDriverState *bs, *bs1; |
| 1396 | QEMUSnapshotInfo sn1, *sn = &sn1, old_sn1, *old_sn = &old_sn1; |
Gerd Hoffmann | 751c6a1 | 2009-07-22 16:42:57 +0200 | [diff] [blame] | 1397 | int must_delete, ret; |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 1398 | QEMUFile *f; |
| 1399 | int saved_vm_running; |
aliguori | 2d22b18 | 2008-12-11 21:06:49 +0000 | [diff] [blame] | 1400 | uint32_t vm_state_size; |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 1401 | #ifdef _WIN32 |
| 1402 | struct _timeb tb; |
| 1403 | #else |
| 1404 | struct timeval tv; |
| 1405 | #endif |
| 1406 | |
| 1407 | bs = get_bs_snapshots(); |
| 1408 | if (!bs) { |
aliguori | 376253e | 2009-03-05 23:01:23 +0000 | [diff] [blame] | 1409 | monitor_printf(mon, "No block device can accept snapshots\n"); |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 1410 | return; |
| 1411 | } |
| 1412 | |
| 1413 | /* ??? Should this occur after vm_stop? */ |
| 1414 | qemu_aio_flush(); |
| 1415 | |
| 1416 | saved_vm_running = vm_running; |
| 1417 | vm_stop(0); |
| 1418 | |
| 1419 | must_delete = 0; |
| 1420 | if (name) { |
| 1421 | ret = bdrv_snapshot_find(bs, old_sn, name); |
| 1422 | if (ret >= 0) { |
| 1423 | must_delete = 1; |
| 1424 | } |
| 1425 | } |
| 1426 | memset(sn, 0, sizeof(*sn)); |
| 1427 | if (must_delete) { |
| 1428 | pstrcpy(sn->name, sizeof(sn->name), old_sn->name); |
| 1429 | pstrcpy(sn->id_str, sizeof(sn->id_str), old_sn->id_str); |
| 1430 | } else { |
| 1431 | if (name) |
| 1432 | pstrcpy(sn->name, sizeof(sn->name), name); |
| 1433 | } |
| 1434 | |
| 1435 | /* fill auxiliary fields */ |
| 1436 | #ifdef _WIN32 |
| 1437 | _ftime(&tb); |
| 1438 | sn->date_sec = tb.time; |
| 1439 | sn->date_nsec = tb.millitm * 1000000; |
| 1440 | #else |
| 1441 | gettimeofday(&tv, NULL); |
| 1442 | sn->date_sec = tv.tv_sec; |
| 1443 | sn->date_nsec = tv.tv_usec * 1000; |
| 1444 | #endif |
| 1445 | sn->vm_clock_nsec = qemu_get_clock(vm_clock); |
| 1446 | |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 1447 | /* save the VM state */ |
Christoph Hellwig | 45566e9 | 2009-07-10 23:11:57 +0200 | [diff] [blame] | 1448 | f = qemu_fopen_bdrv(bs, 1); |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 1449 | if (!f) { |
aliguori | 376253e | 2009-03-05 23:01:23 +0000 | [diff] [blame] | 1450 | monitor_printf(mon, "Could not open VM state file\n"); |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 1451 | goto the_end; |
| 1452 | } |
| 1453 | ret = qemu_savevm_state(f); |
aliguori | 2d22b18 | 2008-12-11 21:06:49 +0000 | [diff] [blame] | 1454 | vm_state_size = qemu_ftell(f); |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 1455 | qemu_fclose(f); |
| 1456 | if (ret < 0) { |
aliguori | 376253e | 2009-03-05 23:01:23 +0000 | [diff] [blame] | 1457 | monitor_printf(mon, "Error %d while writing VM\n", ret); |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 1458 | goto the_end; |
| 1459 | } |
| 1460 | |
| 1461 | /* create the snapshots */ |
| 1462 | |
Gerd Hoffmann | 751c6a1 | 2009-07-22 16:42:57 +0200 | [diff] [blame] | 1463 | TAILQ_FOREACH(dinfo, &drives, next) { |
| 1464 | bs1 = dinfo->bdrv; |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 1465 | if (bdrv_has_snapshot(bs1)) { |
| 1466 | if (must_delete) { |
| 1467 | ret = bdrv_snapshot_delete(bs1, old_sn->id_str); |
| 1468 | if (ret < 0) { |
aliguori | 376253e | 2009-03-05 23:01:23 +0000 | [diff] [blame] | 1469 | monitor_printf(mon, |
| 1470 | "Error while deleting snapshot on '%s'\n", |
| 1471 | bdrv_get_device_name(bs1)); |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 1472 | } |
| 1473 | } |
aliguori | 2d22b18 | 2008-12-11 21:06:49 +0000 | [diff] [blame] | 1474 | /* Write VM state size only to the image that contains the state */ |
| 1475 | sn->vm_state_size = (bs == bs1 ? vm_state_size : 0); |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 1476 | ret = bdrv_snapshot_create(bs1, sn); |
| 1477 | if (ret < 0) { |
aliguori | 376253e | 2009-03-05 23:01:23 +0000 | [diff] [blame] | 1478 | monitor_printf(mon, "Error while creating snapshot on '%s'\n", |
| 1479 | bdrv_get_device_name(bs1)); |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 1480 | } |
| 1481 | } |
| 1482 | } |
| 1483 | |
| 1484 | the_end: |
| 1485 | if (saved_vm_running) |
| 1486 | vm_start(); |
| 1487 | } |
| 1488 | |
Juan Quintela | 05f2401 | 2009-08-20 19:42:22 +0200 | [diff] [blame] | 1489 | int load_vmstate(Monitor *mon, const char *name) |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 1490 | { |
Gerd Hoffmann | 751c6a1 | 2009-07-22 16:42:57 +0200 | [diff] [blame] | 1491 | DriveInfo *dinfo; |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 1492 | BlockDriverState *bs, *bs1; |
aliguori | 2d22b18 | 2008-12-11 21:06:49 +0000 | [diff] [blame] | 1493 | QEMUSnapshotInfo sn; |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 1494 | QEMUFile *f; |
Gerd Hoffmann | 751c6a1 | 2009-07-22 16:42:57 +0200 | [diff] [blame] | 1495 | int ret; |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 1496 | |
| 1497 | bs = get_bs_snapshots(); |
| 1498 | if (!bs) { |
aliguori | 376253e | 2009-03-05 23:01:23 +0000 | [diff] [blame] | 1499 | monitor_printf(mon, "No block device supports snapshots\n"); |
Juan Quintela | 05f2401 | 2009-08-20 19:42:22 +0200 | [diff] [blame] | 1500 | return -EINVAL; |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 1501 | } |
| 1502 | |
| 1503 | /* Flush all IO requests so they don't interfere with the new state. */ |
| 1504 | qemu_aio_flush(); |
| 1505 | |
Gerd Hoffmann | 751c6a1 | 2009-07-22 16:42:57 +0200 | [diff] [blame] | 1506 | TAILQ_FOREACH(dinfo, &drives, next) { |
| 1507 | bs1 = dinfo->bdrv; |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 1508 | if (bdrv_has_snapshot(bs1)) { |
| 1509 | ret = bdrv_snapshot_goto(bs1, name); |
| 1510 | if (ret < 0) { |
| 1511 | if (bs != bs1) |
aliguori | 376253e | 2009-03-05 23:01:23 +0000 | [diff] [blame] | 1512 | monitor_printf(mon, "Warning: "); |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 1513 | switch(ret) { |
| 1514 | case -ENOTSUP: |
aliguori | 376253e | 2009-03-05 23:01:23 +0000 | [diff] [blame] | 1515 | monitor_printf(mon, |
| 1516 | "Snapshots not supported on device '%s'\n", |
| 1517 | bdrv_get_device_name(bs1)); |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 1518 | break; |
| 1519 | case -ENOENT: |
aliguori | 376253e | 2009-03-05 23:01:23 +0000 | [diff] [blame] | 1520 | monitor_printf(mon, "Could not find snapshot '%s' on " |
| 1521 | "device '%s'\n", |
| 1522 | name, bdrv_get_device_name(bs1)); |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 1523 | break; |
| 1524 | default: |
aliguori | 376253e | 2009-03-05 23:01:23 +0000 | [diff] [blame] | 1525 | monitor_printf(mon, "Error %d while activating snapshot on" |
| 1526 | " '%s'\n", ret, bdrv_get_device_name(bs1)); |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 1527 | break; |
| 1528 | } |
| 1529 | /* fatal on snapshot block device */ |
| 1530 | if (bs == bs1) |
Juan Quintela | 05f2401 | 2009-08-20 19:42:22 +0200 | [diff] [blame] | 1531 | return 0; |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 1532 | } |
| 1533 | } |
| 1534 | } |
| 1535 | |
aliguori | 2d22b18 | 2008-12-11 21:06:49 +0000 | [diff] [blame] | 1536 | /* Don't even try to load empty VM states */ |
| 1537 | ret = bdrv_snapshot_find(bs, &sn, name); |
| 1538 | if ((ret >= 0) && (sn.vm_state_size == 0)) |
Juan Quintela | 05f2401 | 2009-08-20 19:42:22 +0200 | [diff] [blame] | 1539 | return -EINVAL; |
aliguori | 2d22b18 | 2008-12-11 21:06:49 +0000 | [diff] [blame] | 1540 | |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 1541 | /* restore the VM state */ |
Christoph Hellwig | 45566e9 | 2009-07-10 23:11:57 +0200 | [diff] [blame] | 1542 | f = qemu_fopen_bdrv(bs, 0); |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 1543 | if (!f) { |
aliguori | 376253e | 2009-03-05 23:01:23 +0000 | [diff] [blame] | 1544 | monitor_printf(mon, "Could not open VM state file\n"); |
Juan Quintela | 05f2401 | 2009-08-20 19:42:22 +0200 | [diff] [blame] | 1545 | return -EINVAL; |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 1546 | } |
| 1547 | ret = qemu_loadvm_state(f); |
| 1548 | qemu_fclose(f); |
| 1549 | if (ret < 0) { |
aliguori | 376253e | 2009-03-05 23:01:23 +0000 | [diff] [blame] | 1550 | monitor_printf(mon, "Error %d while loading VM state\n", ret); |
Juan Quintela | 05f2401 | 2009-08-20 19:42:22 +0200 | [diff] [blame] | 1551 | return ret; |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 1552 | } |
Juan Quintela | 05f2401 | 2009-08-20 19:42:22 +0200 | [diff] [blame] | 1553 | return 0; |
Juan Quintela | 7b63034 | 2009-08-20 19:42:20 +0200 | [diff] [blame] | 1554 | } |
| 1555 | |
aliguori | 376253e | 2009-03-05 23:01:23 +0000 | [diff] [blame] | 1556 | void do_delvm(Monitor *mon, const char *name) |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 1557 | { |
Gerd Hoffmann | 751c6a1 | 2009-07-22 16:42:57 +0200 | [diff] [blame] | 1558 | DriveInfo *dinfo; |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 1559 | BlockDriverState *bs, *bs1; |
Gerd Hoffmann | 751c6a1 | 2009-07-22 16:42:57 +0200 | [diff] [blame] | 1560 | int ret; |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 1561 | |
| 1562 | bs = get_bs_snapshots(); |
| 1563 | if (!bs) { |
aliguori | 376253e | 2009-03-05 23:01:23 +0000 | [diff] [blame] | 1564 | monitor_printf(mon, "No block device supports snapshots\n"); |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 1565 | return; |
| 1566 | } |
| 1567 | |
Gerd Hoffmann | 751c6a1 | 2009-07-22 16:42:57 +0200 | [diff] [blame] | 1568 | TAILQ_FOREACH(dinfo, &drives, next) { |
| 1569 | bs1 = dinfo->bdrv; |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 1570 | if (bdrv_has_snapshot(bs1)) { |
| 1571 | ret = bdrv_snapshot_delete(bs1, name); |
| 1572 | if (ret < 0) { |
| 1573 | if (ret == -ENOTSUP) |
aliguori | 376253e | 2009-03-05 23:01:23 +0000 | [diff] [blame] | 1574 | monitor_printf(mon, |
| 1575 | "Snapshots not supported on device '%s'\n", |
| 1576 | bdrv_get_device_name(bs1)); |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 1577 | else |
aliguori | 376253e | 2009-03-05 23:01:23 +0000 | [diff] [blame] | 1578 | monitor_printf(mon, "Error %d while deleting snapshot on " |
| 1579 | "'%s'\n", ret, bdrv_get_device_name(bs1)); |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 1580 | } |
| 1581 | } |
| 1582 | } |
| 1583 | } |
| 1584 | |
aliguori | 376253e | 2009-03-05 23:01:23 +0000 | [diff] [blame] | 1585 | void do_info_snapshots(Monitor *mon) |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 1586 | { |
Gerd Hoffmann | 751c6a1 | 2009-07-22 16:42:57 +0200 | [diff] [blame] | 1587 | DriveInfo *dinfo; |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 1588 | BlockDriverState *bs, *bs1; |
| 1589 | QEMUSnapshotInfo *sn_tab, *sn; |
| 1590 | int nb_sns, i; |
| 1591 | char buf[256]; |
| 1592 | |
| 1593 | bs = get_bs_snapshots(); |
| 1594 | if (!bs) { |
aliguori | 376253e | 2009-03-05 23:01:23 +0000 | [diff] [blame] | 1595 | monitor_printf(mon, "No available block device supports snapshots\n"); |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 1596 | return; |
| 1597 | } |
aliguori | 376253e | 2009-03-05 23:01:23 +0000 | [diff] [blame] | 1598 | monitor_printf(mon, "Snapshot devices:"); |
Gerd Hoffmann | 751c6a1 | 2009-07-22 16:42:57 +0200 | [diff] [blame] | 1599 | TAILQ_FOREACH(dinfo, &drives, next) { |
| 1600 | bs1 = dinfo->bdrv; |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 1601 | if (bdrv_has_snapshot(bs1)) { |
| 1602 | if (bs == bs1) |
aliguori | 376253e | 2009-03-05 23:01:23 +0000 | [diff] [blame] | 1603 | monitor_printf(mon, " %s", bdrv_get_device_name(bs1)); |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 1604 | } |
| 1605 | } |
aliguori | 376253e | 2009-03-05 23:01:23 +0000 | [diff] [blame] | 1606 | monitor_printf(mon, "\n"); |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 1607 | |
| 1608 | nb_sns = bdrv_snapshot_list(bs, &sn_tab); |
| 1609 | if (nb_sns < 0) { |
aliguori | 376253e | 2009-03-05 23:01:23 +0000 | [diff] [blame] | 1610 | monitor_printf(mon, "bdrv_snapshot_list: error %d\n", nb_sns); |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 1611 | return; |
| 1612 | } |
aliguori | 376253e | 2009-03-05 23:01:23 +0000 | [diff] [blame] | 1613 | monitor_printf(mon, "Snapshot list (from %s):\n", |
| 1614 | bdrv_get_device_name(bs)); |
| 1615 | monitor_printf(mon, "%s\n", bdrv_snapshot_dump(buf, sizeof(buf), NULL)); |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 1616 | for(i = 0; i < nb_sns; i++) { |
| 1617 | sn = &sn_tab[i]; |
aliguori | 376253e | 2009-03-05 23:01:23 +0000 | [diff] [blame] | 1618 | monitor_printf(mon, "%s\n", bdrv_snapshot_dump(buf, sizeof(buf), sn)); |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 1619 | } |
| 1620 | qemu_free(sn_tab); |
| 1621 | } |