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> |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 45 | #include <arpa/inet.h> |
| 46 | #include <dirent.h> |
| 47 | #include <netdb.h> |
| 48 | #include <sys/select.h> |
Juan Quintela | 71e72a1 | 2009-07-27 16:12:56 +0200 | [diff] [blame] | 49 | #ifdef CONFIG_BSD |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 50 | #include <sys/stat.h> |
Aurelien Jarno | a167ba5 | 2009-11-29 18:00:41 +0100 | [diff] [blame] | 51 | #if defined(__FreeBSD__) || defined(__FreeBSD_kernel__) || defined(__DragonFly__) |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 52 | #include <libutil.h> |
| 53 | #else |
| 54 | #include <util.h> |
| 55 | #endif |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 56 | #ifdef __linux__ |
| 57 | #include <pty.h> |
| 58 | #include <malloc.h> |
| 59 | #include <linux/rtc.h> |
| 60 | #endif |
| 61 | #endif |
| 62 | #endif |
| 63 | |
| 64 | #ifdef _WIN32 |
aliguori | 49dc768 | 2009-03-08 16:26:59 +0000 | [diff] [blame] | 65 | #include <windows.h> |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 66 | #include <malloc.h> |
| 67 | #include <sys/timeb.h> |
| 68 | #include <mmsystem.h> |
| 69 | #define getopt_long_only getopt_long |
| 70 | #define memalign(align, size) malloc(size) |
| 71 | #endif |
| 72 | |
blueswir1 | 511d2b1 | 2009-03-07 15:32:56 +0000 | [diff] [blame] | 73 | #include "qemu-common.h" |
| 74 | #include "hw/hw.h" |
Alex Williamson | 7685ee6 | 2010-06-25 11:09:14 -0600 | [diff] [blame] | 75 | #include "hw/qdev.h" |
blueswir1 | 511d2b1 | 2009-03-07 15:32:56 +0000 | [diff] [blame] | 76 | #include "net.h" |
| 77 | #include "monitor.h" |
| 78 | #include "sysemu.h" |
| 79 | #include "qemu-timer.h" |
| 80 | #include "qemu-char.h" |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 81 | #include "blockdev.h" |
blueswir1 | 511d2b1 | 2009-03-07 15:32:56 +0000 | [diff] [blame] | 82 | #include "audio/audio.h" |
| 83 | #include "migration.h" |
| 84 | #include "qemu_socket.h" |
Blue Swirl | 72cf2d4 | 2009-09-12 07:36:22 +0000 | [diff] [blame] | 85 | #include "qemu-queue.h" |
blueswir1 | 511d2b1 | 2009-03-07 15:32:56 +0000 | [diff] [blame] | 86 | |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 87 | #define SELF_ANNOUNCE_ROUNDS 5 |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 88 | |
Nolan | 18995b9 | 2009-10-15 16:53:55 -0700 | [diff] [blame] | 89 | #ifndef ETH_P_RARP |
Stefan Berger | f8778a7 | 2010-04-24 08:54:07 -0400 | [diff] [blame] | 90 | #define ETH_P_RARP 0x8035 |
Nolan | 18995b9 | 2009-10-15 16:53:55 -0700 | [diff] [blame] | 91 | #endif |
| 92 | #define ARP_HTYPE_ETH 0x0001 |
| 93 | #define ARP_PTYPE_IP 0x0800 |
| 94 | #define ARP_OP_REQUEST_REV 0x3 |
| 95 | |
| 96 | static int announce_self_create(uint8_t *buf, |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 97 | uint8_t *mac_addr) |
| 98 | { |
Nolan | 18995b9 | 2009-10-15 16:53:55 -0700 | [diff] [blame] | 99 | /* Ethernet header. */ |
| 100 | memset(buf, 0xff, 6); /* destination MAC addr */ |
| 101 | memcpy(buf + 6, mac_addr, 6); /* source MAC addr */ |
| 102 | *(uint16_t *)(buf + 12) = htons(ETH_P_RARP); /* ethertype */ |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 103 | |
Nolan | 18995b9 | 2009-10-15 16:53:55 -0700 | [diff] [blame] | 104 | /* RARP header. */ |
| 105 | *(uint16_t *)(buf + 14) = htons(ARP_HTYPE_ETH); /* hardware addr space */ |
| 106 | *(uint16_t *)(buf + 16) = htons(ARP_PTYPE_IP); /* protocol addr space */ |
| 107 | *(buf + 18) = 6; /* hardware addr length (ethernet) */ |
| 108 | *(buf + 19) = 4; /* protocol addr length (IPv4) */ |
| 109 | *(uint16_t *)(buf + 20) = htons(ARP_OP_REQUEST_REV); /* opcode */ |
| 110 | memcpy(buf + 22, mac_addr, 6); /* source hw addr */ |
| 111 | memset(buf + 28, 0x00, 4); /* source protocol addr */ |
| 112 | memcpy(buf + 32, mac_addr, 6); /* target hw addr */ |
| 113 | memset(buf + 38, 0x00, 4); /* target protocol addr */ |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 114 | |
Nolan | 18995b9 | 2009-10-15 16:53:55 -0700 | [diff] [blame] | 115 | /* Padding to get up to 60 bytes (ethernet min packet size, minus FCS). */ |
| 116 | memset(buf + 42, 0x00, 18); |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 117 | |
Nolan | 18995b9 | 2009-10-15 16:53:55 -0700 | [diff] [blame] | 118 | return 60; /* len (FCS will be added by hardware) */ |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 119 | } |
| 120 | |
Mark McLoughlin | f401ca2 | 2009-11-25 18:49:32 +0000 | [diff] [blame] | 121 | static void qemu_announce_self_iter(NICState *nic, void *opaque) |
| 122 | { |
| 123 | uint8_t buf[60]; |
| 124 | int len; |
| 125 | |
| 126 | len = announce_self_create(buf, nic->conf->macaddr.a); |
| 127 | |
| 128 | qemu_send_packet_raw(&nic->nc, buf, len); |
| 129 | } |
| 130 | |
| 131 | |
Gleb Natapov | ed8b330 | 2009-05-21 17:17:44 +0300 | [diff] [blame] | 132 | static void qemu_announce_self_once(void *opaque) |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 133 | { |
Gleb Natapov | ed8b330 | 2009-05-21 17:17:44 +0300 | [diff] [blame] | 134 | static int count = SELF_ANNOUNCE_ROUNDS; |
| 135 | QEMUTimer *timer = *(QEMUTimer **)opaque; |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 136 | |
Mark McLoughlin | f401ca2 | 2009-11-25 18:49:32 +0000 | [diff] [blame] | 137 | qemu_foreach_nic(qemu_announce_self_iter, NULL); |
| 138 | |
Nolan | 18995b9 | 2009-10-15 16:53:55 -0700 | [diff] [blame] | 139 | if (--count) { |
| 140 | /* delay 50ms, 150ms, 250ms, ... */ |
| 141 | qemu_mod_timer(timer, qemu_get_clock(rt_clock) + |
| 142 | 50 + (SELF_ANNOUNCE_ROUNDS - count - 1) * 100); |
Gleb Natapov | ed8b330 | 2009-05-21 17:17:44 +0300 | [diff] [blame] | 143 | } else { |
| 144 | qemu_del_timer(timer); |
| 145 | qemu_free_timer(timer); |
| 146 | } |
| 147 | } |
| 148 | |
| 149 | void qemu_announce_self(void) |
| 150 | { |
| 151 | static QEMUTimer *timer; |
| 152 | timer = qemu_new_timer(rt_clock, qemu_announce_self_once, &timer); |
| 153 | qemu_announce_self_once(&timer); |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 154 | } |
| 155 | |
| 156 | /***********************************************************/ |
| 157 | /* savevm/loadvm support */ |
| 158 | |
| 159 | #define IO_BUF_SIZE 32768 |
| 160 | |
| 161 | struct QEMUFile { |
| 162 | QEMUFilePutBufferFunc *put_buffer; |
| 163 | QEMUFileGetBufferFunc *get_buffer; |
| 164 | QEMUFileCloseFunc *close; |
| 165 | QEMUFileRateLimit *rate_limit; |
Glauber Costa | 1962953 | 2009-05-20 18:26:57 -0400 | [diff] [blame] | 166 | QEMUFileSetRateLimit *set_rate_limit; |
lirans@il.ibm.com | c163b5c | 2009-11-02 15:40:58 +0200 | [diff] [blame] | 167 | QEMUFileGetRateLimit *get_rate_limit; |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 168 | void *opaque; |
| 169 | int is_write; |
| 170 | |
| 171 | int64_t buf_offset; /* start of buffer when writing, end of buffer |
| 172 | when reading */ |
| 173 | int buf_index; |
| 174 | int buf_size; /* 0 when writing */ |
| 175 | uint8_t buf[IO_BUF_SIZE]; |
| 176 | |
| 177 | int has_error; |
| 178 | }; |
| 179 | |
Paolo Bonzini | 7f79dd2 | 2009-08-12 14:17:35 +0200 | [diff] [blame] | 180 | typedef struct QEMUFileStdio |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 181 | { |
Paolo Bonzini | 7f79dd2 | 2009-08-12 14:17:35 +0200 | [diff] [blame] | 182 | FILE *stdio_file; |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 183 | QEMUFile *file; |
Paolo Bonzini | 7f79dd2 | 2009-08-12 14:17:35 +0200 | [diff] [blame] | 184 | } QEMUFileStdio; |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 185 | |
| 186 | typedef struct QEMUFileSocket |
| 187 | { |
| 188 | int fd; |
| 189 | QEMUFile *file; |
| 190 | } QEMUFileSocket; |
| 191 | |
| 192 | static int socket_get_buffer(void *opaque, uint8_t *buf, int64_t pos, int size) |
| 193 | { |
| 194 | QEMUFileSocket *s = opaque; |
| 195 | ssize_t len; |
| 196 | |
| 197 | do { |
Blue Swirl | c5b76b3 | 2009-06-13 08:44:31 +0000 | [diff] [blame] | 198 | len = recv(s->fd, (void *)buf, size, 0); |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 199 | } while (len == -1 && socket_error() == EINTR); |
| 200 | |
| 201 | if (len == -1) |
| 202 | len = -socket_error(); |
| 203 | |
| 204 | return len; |
| 205 | } |
| 206 | |
| 207 | static int socket_close(void *opaque) |
| 208 | { |
| 209 | QEMUFileSocket *s = opaque; |
| 210 | qemu_free(s); |
| 211 | return 0; |
| 212 | } |
| 213 | |
Paolo Bonzini | 7f79dd2 | 2009-08-12 14:17:35 +0200 | [diff] [blame] | 214 | 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] | 215 | { |
Paolo Bonzini | 7f79dd2 | 2009-08-12 14:17:35 +0200 | [diff] [blame] | 216 | QEMUFileStdio *s = opaque; |
| 217 | return fwrite(buf, 1, size, s->stdio_file); |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 218 | } |
| 219 | |
Paolo Bonzini | 7f79dd2 | 2009-08-12 14:17:35 +0200 | [diff] [blame] | 220 | 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] | 221 | { |
Paolo Bonzini | 7f79dd2 | 2009-08-12 14:17:35 +0200 | [diff] [blame] | 222 | QEMUFileStdio *s = opaque; |
| 223 | FILE *fp = s->stdio_file; |
Uri Lublin | 8a67ec4 | 2009-06-08 19:27:21 +0300 | [diff] [blame] | 224 | int bytes; |
| 225 | |
| 226 | do { |
| 227 | clearerr(fp); |
| 228 | bytes = fread(buf, 1, size, fp); |
| 229 | } while ((bytes == 0) && ferror(fp) && (errno == EINTR)); |
| 230 | return bytes; |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 231 | } |
| 232 | |
Paolo Bonzini | 7f79dd2 | 2009-08-12 14:17:35 +0200 | [diff] [blame] | 233 | static int stdio_pclose(void *opaque) |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 234 | { |
Paolo Bonzini | 7f79dd2 | 2009-08-12 14:17:35 +0200 | [diff] [blame] | 235 | QEMUFileStdio *s = opaque; |
Anthony Liguori | 41ef56e | 2010-06-02 14:55:25 -0500 | [diff] [blame] | 236 | int ret; |
| 237 | ret = pclose(s->stdio_file); |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 238 | qemu_free(s); |
Anthony Liguori | 41ef56e | 2010-06-02 14:55:25 -0500 | [diff] [blame] | 239 | return ret; |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 240 | } |
| 241 | |
Paolo Bonzini | 7f79dd2 | 2009-08-12 14:17:35 +0200 | [diff] [blame] | 242 | static int stdio_fclose(void *opaque) |
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 | QEMUFileStdio *s = opaque; |
| 245 | fclose(s->stdio_file); |
| 246 | qemu_free(s); |
| 247 | return 0; |
| 248 | } |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 249 | |
Paolo Bonzini | 7f79dd2 | 2009-08-12 14:17:35 +0200 | [diff] [blame] | 250 | QEMUFile *qemu_popen(FILE *stdio_file, const char *mode) |
| 251 | { |
| 252 | QEMUFileStdio *s; |
| 253 | |
| 254 | 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] | 255 | fprintf(stderr, "qemu_popen: Argument validity check failed\n"); |
| 256 | return NULL; |
| 257 | } |
| 258 | |
Paolo Bonzini | 7f79dd2 | 2009-08-12 14:17:35 +0200 | [diff] [blame] | 259 | s = qemu_mallocz(sizeof(QEMUFileStdio)); |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 260 | |
Paolo Bonzini | 7f79dd2 | 2009-08-12 14:17:35 +0200 | [diff] [blame] | 261 | s->stdio_file = stdio_file; |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 262 | |
| 263 | if(mode[0] == 'r') { |
lirans@il.ibm.com | c163b5c | 2009-11-02 15:40:58 +0200 | [diff] [blame] | 264 | s->file = qemu_fopen_ops(s, NULL, stdio_get_buffer, stdio_pclose, |
| 265 | NULL, NULL, NULL); |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 266 | } else { |
lirans@il.ibm.com | c163b5c | 2009-11-02 15:40:58 +0200 | [diff] [blame] | 267 | s->file = qemu_fopen_ops(s, stdio_put_buffer, NULL, stdio_pclose, |
| 268 | NULL, NULL, NULL); |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 269 | } |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 270 | return s->file; |
| 271 | } |
| 272 | |
| 273 | QEMUFile *qemu_popen_cmd(const char *command, const char *mode) |
| 274 | { |
| 275 | FILE *popen_file; |
| 276 | |
| 277 | popen_file = popen(command, mode); |
| 278 | if(popen_file == NULL) { |
| 279 | return NULL; |
| 280 | } |
| 281 | |
| 282 | return qemu_popen(popen_file, mode); |
| 283 | } |
| 284 | |
Paolo Bonzini | 7f79dd2 | 2009-08-12 14:17:35 +0200 | [diff] [blame] | 285 | int qemu_stdio_fd(QEMUFile *f) |
Chris Lalancette | 8a43b1e | 2009-05-25 16:38:23 +0200 | [diff] [blame] | 286 | { |
Paolo Bonzini | 7f79dd2 | 2009-08-12 14:17:35 +0200 | [diff] [blame] | 287 | QEMUFileStdio *p; |
Chris Lalancette | 8a43b1e | 2009-05-25 16:38:23 +0200 | [diff] [blame] | 288 | int fd; |
| 289 | |
Paolo Bonzini | 7f79dd2 | 2009-08-12 14:17:35 +0200 | [diff] [blame] | 290 | p = (QEMUFileStdio *)f->opaque; |
| 291 | fd = fileno(p->stdio_file); |
Chris Lalancette | 8a43b1e | 2009-05-25 16:38:23 +0200 | [diff] [blame] | 292 | |
| 293 | return fd; |
| 294 | } |
| 295 | |
Paolo Bonzini | 5ac1fad | 2009-08-18 15:56:25 +0200 | [diff] [blame] | 296 | QEMUFile *qemu_fdopen(int fd, const char *mode) |
| 297 | { |
| 298 | QEMUFileStdio *s; |
| 299 | |
| 300 | if (mode == NULL || |
| 301 | (mode[0] != 'r' && mode[0] != 'w') || |
| 302 | mode[1] != 'b' || mode[2] != 0) { |
| 303 | fprintf(stderr, "qemu_fdopen: Argument validity check failed\n"); |
| 304 | return NULL; |
| 305 | } |
| 306 | |
| 307 | s = qemu_mallocz(sizeof(QEMUFileStdio)); |
| 308 | s->stdio_file = fdopen(fd, mode); |
| 309 | if (!s->stdio_file) |
| 310 | goto fail; |
| 311 | |
| 312 | if(mode[0] == 'r') { |
lirans@il.ibm.com | c163b5c | 2009-11-02 15:40:58 +0200 | [diff] [blame] | 313 | s->file = qemu_fopen_ops(s, NULL, stdio_get_buffer, stdio_fclose, |
| 314 | NULL, NULL, NULL); |
Paolo Bonzini | 5ac1fad | 2009-08-18 15:56:25 +0200 | [diff] [blame] | 315 | } else { |
lirans@il.ibm.com | c163b5c | 2009-11-02 15:40:58 +0200 | [diff] [blame] | 316 | s->file = qemu_fopen_ops(s, stdio_put_buffer, NULL, stdio_fclose, |
| 317 | NULL, NULL, NULL); |
Paolo Bonzini | 5ac1fad | 2009-08-18 15:56:25 +0200 | [diff] [blame] | 318 | } |
| 319 | return s->file; |
| 320 | |
| 321 | fail: |
| 322 | qemu_free(s); |
| 323 | return NULL; |
| 324 | } |
| 325 | |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 326 | QEMUFile *qemu_fopen_socket(int fd) |
| 327 | { |
| 328 | QEMUFileSocket *s = qemu_mallocz(sizeof(QEMUFileSocket)); |
| 329 | |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 330 | s->fd = fd; |
lirans@il.ibm.com | c163b5c | 2009-11-02 15:40:58 +0200 | [diff] [blame] | 331 | s->file = qemu_fopen_ops(s, NULL, socket_get_buffer, socket_close, |
| 332 | NULL, NULL, NULL); |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 333 | return s->file; |
| 334 | } |
| 335 | |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 336 | static int file_put_buffer(void *opaque, const uint8_t *buf, |
| 337 | int64_t pos, int size) |
| 338 | { |
| 339 | QEMUFileStdio *s = opaque; |
Paolo Bonzini | 7f79dd2 | 2009-08-12 14:17:35 +0200 | [diff] [blame] | 340 | fseek(s->stdio_file, pos, SEEK_SET); |
Kirill A. Shutemov | 5fdb3aa | 2009-12-25 18:19:19 +0000 | [diff] [blame] | 341 | return fwrite(buf, 1, size, s->stdio_file); |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 342 | } |
| 343 | |
| 344 | static int file_get_buffer(void *opaque, uint8_t *buf, int64_t pos, int size) |
| 345 | { |
| 346 | QEMUFileStdio *s = opaque; |
Paolo Bonzini | 7f79dd2 | 2009-08-12 14:17:35 +0200 | [diff] [blame] | 347 | fseek(s->stdio_file, pos, SEEK_SET); |
| 348 | return fread(buf, 1, size, s->stdio_file); |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 349 | } |
| 350 | |
| 351 | QEMUFile *qemu_fopen(const char *filename, const char *mode) |
| 352 | { |
| 353 | QEMUFileStdio *s; |
| 354 | |
Paolo Bonzini | 7f79dd2 | 2009-08-12 14:17:35 +0200 | [diff] [blame] | 355 | if (mode == NULL || |
| 356 | (mode[0] != 'r' && mode[0] != 'w') || |
| 357 | mode[1] != 'b' || mode[2] != 0) { |
Blue Swirl | 090414a | 2010-03-13 11:36:09 +0000 | [diff] [blame] | 358 | fprintf(stderr, "qemu_fopen: Argument validity check failed\n"); |
Paolo Bonzini | 7f79dd2 | 2009-08-12 14:17:35 +0200 | [diff] [blame] | 359 | return NULL; |
| 360 | } |
| 361 | |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 362 | s = qemu_mallocz(sizeof(QEMUFileStdio)); |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 363 | |
Paolo Bonzini | 7f79dd2 | 2009-08-12 14:17:35 +0200 | [diff] [blame] | 364 | s->stdio_file = fopen(filename, mode); |
| 365 | if (!s->stdio_file) |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 366 | goto fail; |
lirans@il.ibm.com | c163b5c | 2009-11-02 15:40:58 +0200 | [diff] [blame] | 367 | |
Paolo Bonzini | 7f79dd2 | 2009-08-12 14:17:35 +0200 | [diff] [blame] | 368 | if(mode[0] == 'w') { |
lirans@il.ibm.com | c163b5c | 2009-11-02 15:40:58 +0200 | [diff] [blame] | 369 | s->file = qemu_fopen_ops(s, file_put_buffer, NULL, stdio_fclose, |
| 370 | NULL, NULL, NULL); |
Paolo Bonzini | 7f79dd2 | 2009-08-12 14:17:35 +0200 | [diff] [blame] | 371 | } else { |
lirans@il.ibm.com | c163b5c | 2009-11-02 15:40:58 +0200 | [diff] [blame] | 372 | s->file = qemu_fopen_ops(s, NULL, file_get_buffer, stdio_fclose, |
| 373 | NULL, NULL, NULL); |
Paolo Bonzini | 7f79dd2 | 2009-08-12 14:17:35 +0200 | [diff] [blame] | 374 | } |
| 375 | return s->file; |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 376 | fail: |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 377 | qemu_free(s); |
| 378 | return NULL; |
| 379 | } |
| 380 | |
aliguori | 178e08a | 2009-04-05 19:10:55 +0000 | [diff] [blame] | 381 | static int block_put_buffer(void *opaque, const uint8_t *buf, |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 382 | int64_t pos, int size) |
| 383 | { |
Christoph Hellwig | 45566e9 | 2009-07-10 23:11:57 +0200 | [diff] [blame] | 384 | bdrv_save_vmstate(opaque, buf, pos, size); |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 385 | return size; |
| 386 | } |
| 387 | |
aliguori | 178e08a | 2009-04-05 19:10:55 +0000 | [diff] [blame] | 388 | 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] | 389 | { |
Christoph Hellwig | 45566e9 | 2009-07-10 23:11:57 +0200 | [diff] [blame] | 390 | return bdrv_load_vmstate(opaque, buf, pos, size); |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 391 | } |
| 392 | |
| 393 | static int bdrv_fclose(void *opaque) |
| 394 | { |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 395 | return 0; |
| 396 | } |
| 397 | |
Christoph Hellwig | 45566e9 | 2009-07-10 23:11:57 +0200 | [diff] [blame] | 398 | static QEMUFile *qemu_fopen_bdrv(BlockDriverState *bs, int is_writable) |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 399 | { |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 400 | if (is_writable) |
lirans@il.ibm.com | c163b5c | 2009-11-02 15:40:58 +0200 | [diff] [blame] | 401 | return qemu_fopen_ops(bs, block_put_buffer, NULL, bdrv_fclose, |
| 402 | NULL, NULL, NULL); |
| 403 | return qemu_fopen_ops(bs, NULL, block_get_buffer, bdrv_fclose, NULL, NULL, NULL); |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 404 | } |
| 405 | |
| 406 | QEMUFile *qemu_fopen_ops(void *opaque, QEMUFilePutBufferFunc *put_buffer, |
| 407 | QEMUFileGetBufferFunc *get_buffer, |
| 408 | QEMUFileCloseFunc *close, |
Glauber Costa | 1962953 | 2009-05-20 18:26:57 -0400 | [diff] [blame] | 409 | QEMUFileRateLimit *rate_limit, |
lirans@il.ibm.com | c163b5c | 2009-11-02 15:40:58 +0200 | [diff] [blame] | 410 | QEMUFileSetRateLimit *set_rate_limit, |
| 411 | QEMUFileGetRateLimit *get_rate_limit) |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 412 | { |
| 413 | QEMUFile *f; |
| 414 | |
| 415 | f = qemu_mallocz(sizeof(QEMUFile)); |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 416 | |
| 417 | f->opaque = opaque; |
| 418 | f->put_buffer = put_buffer; |
| 419 | f->get_buffer = get_buffer; |
| 420 | f->close = close; |
| 421 | f->rate_limit = rate_limit; |
Glauber Costa | 1962953 | 2009-05-20 18:26:57 -0400 | [diff] [blame] | 422 | f->set_rate_limit = set_rate_limit; |
lirans@il.ibm.com | c163b5c | 2009-11-02 15:40:58 +0200 | [diff] [blame] | 423 | f->get_rate_limit = get_rate_limit; |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 424 | f->is_write = 0; |
| 425 | |
| 426 | return f; |
| 427 | } |
| 428 | |
| 429 | int qemu_file_has_error(QEMUFile *f) |
| 430 | { |
| 431 | return f->has_error; |
| 432 | } |
| 433 | |
aliguori | 4dabe24 | 2009-04-05 19:30:51 +0000 | [diff] [blame] | 434 | void qemu_file_set_error(QEMUFile *f) |
| 435 | { |
| 436 | f->has_error = 1; |
| 437 | } |
| 438 | |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 439 | void qemu_fflush(QEMUFile *f) |
| 440 | { |
| 441 | if (!f->put_buffer) |
| 442 | return; |
| 443 | |
| 444 | if (f->is_write && f->buf_index > 0) { |
| 445 | int len; |
| 446 | |
| 447 | len = f->put_buffer(f->opaque, f->buf, f->buf_offset, f->buf_index); |
| 448 | if (len > 0) |
| 449 | f->buf_offset += f->buf_index; |
| 450 | else |
| 451 | f->has_error = 1; |
| 452 | f->buf_index = 0; |
| 453 | } |
| 454 | } |
| 455 | |
| 456 | static void qemu_fill_buffer(QEMUFile *f) |
| 457 | { |
| 458 | int len; |
| 459 | |
| 460 | if (!f->get_buffer) |
| 461 | return; |
| 462 | |
| 463 | if (f->is_write) |
| 464 | abort(); |
| 465 | |
| 466 | len = f->get_buffer(f->opaque, f->buf, f->buf_offset, IO_BUF_SIZE); |
| 467 | if (len > 0) { |
| 468 | f->buf_index = 0; |
| 469 | f->buf_size = len; |
| 470 | f->buf_offset += len; |
| 471 | } else if (len != -EAGAIN) |
| 472 | f->has_error = 1; |
| 473 | } |
| 474 | |
| 475 | int qemu_fclose(QEMUFile *f) |
| 476 | { |
| 477 | int ret = 0; |
| 478 | qemu_fflush(f); |
| 479 | if (f->close) |
| 480 | ret = f->close(f->opaque); |
| 481 | qemu_free(f); |
| 482 | return ret; |
| 483 | } |
| 484 | |
| 485 | void qemu_file_put_notify(QEMUFile *f) |
| 486 | { |
| 487 | f->put_buffer(f->opaque, NULL, 0, 0); |
| 488 | } |
| 489 | |
| 490 | void qemu_put_buffer(QEMUFile *f, const uint8_t *buf, int size) |
| 491 | { |
| 492 | int l; |
| 493 | |
| 494 | if (!f->has_error && f->is_write == 0 && f->buf_index > 0) { |
| 495 | fprintf(stderr, |
| 496 | "Attempted to write to buffer while read buffer is not empty\n"); |
| 497 | abort(); |
| 498 | } |
| 499 | |
| 500 | while (!f->has_error && size > 0) { |
| 501 | l = IO_BUF_SIZE - f->buf_index; |
| 502 | if (l > size) |
| 503 | l = size; |
| 504 | memcpy(f->buf + f->buf_index, buf, l); |
| 505 | f->is_write = 1; |
| 506 | f->buf_index += l; |
| 507 | buf += l; |
| 508 | size -= l; |
| 509 | if (f->buf_index >= IO_BUF_SIZE) |
| 510 | qemu_fflush(f); |
| 511 | } |
| 512 | } |
| 513 | |
| 514 | void qemu_put_byte(QEMUFile *f, int v) |
| 515 | { |
| 516 | if (!f->has_error && f->is_write == 0 && f->buf_index > 0) { |
| 517 | fprintf(stderr, |
| 518 | "Attempted to write to buffer while read buffer is not empty\n"); |
| 519 | abort(); |
| 520 | } |
| 521 | |
| 522 | f->buf[f->buf_index++] = v; |
| 523 | f->is_write = 1; |
| 524 | if (f->buf_index >= IO_BUF_SIZE) |
| 525 | qemu_fflush(f); |
| 526 | } |
| 527 | |
| 528 | int qemu_get_buffer(QEMUFile *f, uint8_t *buf, int size1) |
| 529 | { |
| 530 | int size, l; |
| 531 | |
| 532 | if (f->is_write) |
| 533 | abort(); |
| 534 | |
| 535 | size = size1; |
| 536 | while (size > 0) { |
| 537 | l = f->buf_size - f->buf_index; |
| 538 | if (l == 0) { |
| 539 | qemu_fill_buffer(f); |
| 540 | l = f->buf_size - f->buf_index; |
| 541 | if (l == 0) |
| 542 | break; |
| 543 | } |
| 544 | if (l > size) |
| 545 | l = size; |
| 546 | memcpy(buf, f->buf + f->buf_index, l); |
| 547 | f->buf_index += l; |
| 548 | buf += l; |
| 549 | size -= l; |
| 550 | } |
| 551 | return size1 - size; |
| 552 | } |
| 553 | |
Juan Quintela | 811814b | 2010-07-26 21:38:43 +0200 | [diff] [blame] | 554 | static int qemu_peek_byte(QEMUFile *f) |
| 555 | { |
| 556 | if (f->is_write) |
| 557 | abort(); |
| 558 | |
| 559 | if (f->buf_index >= f->buf_size) { |
| 560 | qemu_fill_buffer(f); |
| 561 | if (f->buf_index >= f->buf_size) |
| 562 | return 0; |
| 563 | } |
| 564 | return f->buf[f->buf_index]; |
| 565 | } |
| 566 | |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 567 | int qemu_get_byte(QEMUFile *f) |
| 568 | { |
| 569 | if (f->is_write) |
| 570 | abort(); |
| 571 | |
| 572 | if (f->buf_index >= f->buf_size) { |
| 573 | qemu_fill_buffer(f); |
| 574 | if (f->buf_index >= f->buf_size) |
| 575 | return 0; |
| 576 | } |
| 577 | return f->buf[f->buf_index++]; |
| 578 | } |
| 579 | |
| 580 | int64_t qemu_ftell(QEMUFile *f) |
| 581 | { |
| 582 | return f->buf_offset - f->buf_size + f->buf_index; |
| 583 | } |
| 584 | |
| 585 | int64_t qemu_fseek(QEMUFile *f, int64_t pos, int whence) |
| 586 | { |
| 587 | if (whence == SEEK_SET) { |
| 588 | /* nothing to do */ |
| 589 | } else if (whence == SEEK_CUR) { |
| 590 | pos += qemu_ftell(f); |
| 591 | } else { |
| 592 | /* SEEK_END not supported */ |
| 593 | return -1; |
| 594 | } |
| 595 | if (f->put_buffer) { |
| 596 | qemu_fflush(f); |
| 597 | f->buf_offset = pos; |
| 598 | } else { |
| 599 | f->buf_offset = pos; |
| 600 | f->buf_index = 0; |
| 601 | f->buf_size = 0; |
| 602 | } |
| 603 | return pos; |
| 604 | } |
| 605 | |
| 606 | int qemu_file_rate_limit(QEMUFile *f) |
| 607 | { |
| 608 | if (f->rate_limit) |
| 609 | return f->rate_limit(f->opaque); |
| 610 | |
| 611 | return 0; |
| 612 | } |
| 613 | |
lirans@il.ibm.com | c163b5c | 2009-11-02 15:40:58 +0200 | [diff] [blame] | 614 | size_t qemu_file_get_rate_limit(QEMUFile *f) |
| 615 | { |
| 616 | if (f->get_rate_limit) |
| 617 | return f->get_rate_limit(f->opaque); |
| 618 | |
| 619 | return 0; |
| 620 | } |
| 621 | |
Glauber Costa | 1962953 | 2009-05-20 18:26:57 -0400 | [diff] [blame] | 622 | size_t qemu_file_set_rate_limit(QEMUFile *f, size_t new_rate) |
| 623 | { |
Glauber Costa | 0bb05ea | 2009-07-14 18:26:51 -0400 | [diff] [blame] | 624 | /* any failed or completed migration keeps its state to allow probing of |
| 625 | * migration data, but has no associated file anymore */ |
| 626 | if (f && f->set_rate_limit) |
Glauber Costa | 1962953 | 2009-05-20 18:26:57 -0400 | [diff] [blame] | 627 | return f->set_rate_limit(f->opaque, new_rate); |
| 628 | |
| 629 | return 0; |
| 630 | } |
| 631 | |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 632 | void qemu_put_be16(QEMUFile *f, unsigned int v) |
| 633 | { |
| 634 | qemu_put_byte(f, v >> 8); |
| 635 | qemu_put_byte(f, v); |
| 636 | } |
| 637 | |
| 638 | void qemu_put_be32(QEMUFile *f, unsigned int v) |
| 639 | { |
| 640 | qemu_put_byte(f, v >> 24); |
| 641 | qemu_put_byte(f, v >> 16); |
| 642 | qemu_put_byte(f, v >> 8); |
| 643 | qemu_put_byte(f, v); |
| 644 | } |
| 645 | |
| 646 | void qemu_put_be64(QEMUFile *f, uint64_t v) |
| 647 | { |
| 648 | qemu_put_be32(f, v >> 32); |
| 649 | qemu_put_be32(f, v); |
| 650 | } |
| 651 | |
| 652 | unsigned int qemu_get_be16(QEMUFile *f) |
| 653 | { |
| 654 | unsigned int v; |
| 655 | v = qemu_get_byte(f) << 8; |
| 656 | v |= qemu_get_byte(f); |
| 657 | return v; |
| 658 | } |
| 659 | |
| 660 | unsigned int qemu_get_be32(QEMUFile *f) |
| 661 | { |
| 662 | unsigned int v; |
| 663 | v = qemu_get_byte(f) << 24; |
| 664 | v |= qemu_get_byte(f) << 16; |
| 665 | v |= qemu_get_byte(f) << 8; |
| 666 | v |= qemu_get_byte(f); |
| 667 | return v; |
| 668 | } |
| 669 | |
| 670 | uint64_t qemu_get_be64(QEMUFile *f) |
| 671 | { |
| 672 | uint64_t v; |
| 673 | v = (uint64_t)qemu_get_be32(f) << 32; |
| 674 | v |= qemu_get_be32(f); |
| 675 | return v; |
| 676 | } |
| 677 | |
Juan Quintela | 9ed7d6a | 2009-08-20 19:42:25 +0200 | [diff] [blame] | 678 | /* 8 bit int */ |
| 679 | |
| 680 | static int get_int8(QEMUFile *f, void *pv, size_t size) |
| 681 | { |
| 682 | int8_t *v = pv; |
| 683 | qemu_get_s8s(f, v); |
| 684 | return 0; |
| 685 | } |
| 686 | |
Juan Quintela | 84e2e3e | 2009-09-29 22:48:20 +0200 | [diff] [blame] | 687 | static void put_int8(QEMUFile *f, void *pv, size_t size) |
Juan Quintela | 9ed7d6a | 2009-08-20 19:42:25 +0200 | [diff] [blame] | 688 | { |
Juan Quintela | 84e2e3e | 2009-09-29 22:48:20 +0200 | [diff] [blame] | 689 | int8_t *v = pv; |
Juan Quintela | 9ed7d6a | 2009-08-20 19:42:25 +0200 | [diff] [blame] | 690 | qemu_put_s8s(f, v); |
| 691 | } |
| 692 | |
| 693 | const VMStateInfo vmstate_info_int8 = { |
| 694 | .name = "int8", |
| 695 | .get = get_int8, |
| 696 | .put = put_int8, |
| 697 | }; |
| 698 | |
| 699 | /* 16 bit int */ |
| 700 | |
| 701 | static int get_int16(QEMUFile *f, void *pv, size_t size) |
| 702 | { |
| 703 | int16_t *v = pv; |
| 704 | qemu_get_sbe16s(f, v); |
| 705 | return 0; |
| 706 | } |
| 707 | |
Juan Quintela | 84e2e3e | 2009-09-29 22:48:20 +0200 | [diff] [blame] | 708 | static void put_int16(QEMUFile *f, void *pv, size_t size) |
Juan Quintela | 9ed7d6a | 2009-08-20 19:42:25 +0200 | [diff] [blame] | 709 | { |
Juan Quintela | 84e2e3e | 2009-09-29 22:48:20 +0200 | [diff] [blame] | 710 | int16_t *v = pv; |
Juan Quintela | 9ed7d6a | 2009-08-20 19:42:25 +0200 | [diff] [blame] | 711 | qemu_put_sbe16s(f, v); |
| 712 | } |
| 713 | |
| 714 | const VMStateInfo vmstate_info_int16 = { |
| 715 | .name = "int16", |
| 716 | .get = get_int16, |
| 717 | .put = put_int16, |
| 718 | }; |
| 719 | |
| 720 | /* 32 bit int */ |
| 721 | |
| 722 | static int get_int32(QEMUFile *f, void *pv, size_t size) |
| 723 | { |
| 724 | int32_t *v = pv; |
| 725 | qemu_get_sbe32s(f, v); |
| 726 | return 0; |
| 727 | } |
| 728 | |
Juan Quintela | 84e2e3e | 2009-09-29 22:48:20 +0200 | [diff] [blame] | 729 | static void put_int32(QEMUFile *f, void *pv, size_t size) |
Juan Quintela | 9ed7d6a | 2009-08-20 19:42:25 +0200 | [diff] [blame] | 730 | { |
Juan Quintela | 84e2e3e | 2009-09-29 22:48:20 +0200 | [diff] [blame] | 731 | int32_t *v = pv; |
Juan Quintela | 9ed7d6a | 2009-08-20 19:42:25 +0200 | [diff] [blame] | 732 | qemu_put_sbe32s(f, v); |
| 733 | } |
| 734 | |
| 735 | const VMStateInfo vmstate_info_int32 = { |
| 736 | .name = "int32", |
| 737 | .get = get_int32, |
| 738 | .put = put_int32, |
| 739 | }; |
| 740 | |
Juan Quintela | 8250166 | 2009-08-20 19:42:32 +0200 | [diff] [blame] | 741 | /* 32 bit int. See that the received value is the same than the one |
| 742 | in the field */ |
| 743 | |
| 744 | static int get_int32_equal(QEMUFile *f, void *pv, size_t size) |
| 745 | { |
| 746 | int32_t *v = pv; |
| 747 | int32_t v2; |
| 748 | qemu_get_sbe32s(f, &v2); |
| 749 | |
| 750 | if (*v == v2) |
| 751 | return 0; |
| 752 | return -EINVAL; |
| 753 | } |
| 754 | |
| 755 | const VMStateInfo vmstate_info_int32_equal = { |
| 756 | .name = "int32 equal", |
| 757 | .get = get_int32_equal, |
| 758 | .put = put_int32, |
| 759 | }; |
| 760 | |
Juan Quintela | 0a031e0 | 2009-08-20 19:42:37 +0200 | [diff] [blame] | 761 | /* 32 bit int. See that the received value is the less or the same |
| 762 | than the one in the field */ |
| 763 | |
| 764 | static int get_int32_le(QEMUFile *f, void *pv, size_t size) |
| 765 | { |
| 766 | int32_t *old = pv; |
| 767 | int32_t new; |
| 768 | qemu_get_sbe32s(f, &new); |
| 769 | |
| 770 | if (*old <= new) |
| 771 | return 0; |
| 772 | return -EINVAL; |
| 773 | } |
| 774 | |
| 775 | const VMStateInfo vmstate_info_int32_le = { |
| 776 | .name = "int32 equal", |
| 777 | .get = get_int32_le, |
| 778 | .put = put_int32, |
| 779 | }; |
| 780 | |
Juan Quintela | 9ed7d6a | 2009-08-20 19:42:25 +0200 | [diff] [blame] | 781 | /* 64 bit int */ |
| 782 | |
| 783 | static int get_int64(QEMUFile *f, void *pv, size_t size) |
| 784 | { |
| 785 | int64_t *v = pv; |
| 786 | qemu_get_sbe64s(f, v); |
| 787 | return 0; |
| 788 | } |
| 789 | |
Juan Quintela | 84e2e3e | 2009-09-29 22:48:20 +0200 | [diff] [blame] | 790 | static void put_int64(QEMUFile *f, void *pv, size_t size) |
Juan Quintela | 9ed7d6a | 2009-08-20 19:42:25 +0200 | [diff] [blame] | 791 | { |
Juan Quintela | 84e2e3e | 2009-09-29 22:48:20 +0200 | [diff] [blame] | 792 | int64_t *v = pv; |
Juan Quintela | 9ed7d6a | 2009-08-20 19:42:25 +0200 | [diff] [blame] | 793 | qemu_put_sbe64s(f, v); |
| 794 | } |
| 795 | |
| 796 | const VMStateInfo vmstate_info_int64 = { |
| 797 | .name = "int64", |
| 798 | .get = get_int64, |
| 799 | .put = put_int64, |
| 800 | }; |
| 801 | |
| 802 | /* 8 bit unsigned int */ |
| 803 | |
| 804 | static int get_uint8(QEMUFile *f, void *pv, size_t size) |
| 805 | { |
| 806 | uint8_t *v = pv; |
| 807 | qemu_get_8s(f, v); |
| 808 | return 0; |
| 809 | } |
| 810 | |
Juan Quintela | 84e2e3e | 2009-09-29 22:48:20 +0200 | [diff] [blame] | 811 | static void put_uint8(QEMUFile *f, void *pv, size_t size) |
Juan Quintela | 9ed7d6a | 2009-08-20 19:42:25 +0200 | [diff] [blame] | 812 | { |
Juan Quintela | 84e2e3e | 2009-09-29 22:48:20 +0200 | [diff] [blame] | 813 | uint8_t *v = pv; |
Juan Quintela | 9ed7d6a | 2009-08-20 19:42:25 +0200 | [diff] [blame] | 814 | qemu_put_8s(f, v); |
| 815 | } |
| 816 | |
| 817 | const VMStateInfo vmstate_info_uint8 = { |
| 818 | .name = "uint8", |
| 819 | .get = get_uint8, |
| 820 | .put = put_uint8, |
| 821 | }; |
| 822 | |
| 823 | /* 16 bit unsigned int */ |
| 824 | |
| 825 | static int get_uint16(QEMUFile *f, void *pv, size_t size) |
| 826 | { |
| 827 | uint16_t *v = pv; |
| 828 | qemu_get_be16s(f, v); |
| 829 | return 0; |
| 830 | } |
| 831 | |
Juan Quintela | 84e2e3e | 2009-09-29 22:48:20 +0200 | [diff] [blame] | 832 | static void put_uint16(QEMUFile *f, void *pv, size_t size) |
Juan Quintela | 9ed7d6a | 2009-08-20 19:42:25 +0200 | [diff] [blame] | 833 | { |
Juan Quintela | 84e2e3e | 2009-09-29 22:48:20 +0200 | [diff] [blame] | 834 | uint16_t *v = pv; |
Juan Quintela | 9ed7d6a | 2009-08-20 19:42:25 +0200 | [diff] [blame] | 835 | qemu_put_be16s(f, v); |
| 836 | } |
| 837 | |
| 838 | const VMStateInfo vmstate_info_uint16 = { |
| 839 | .name = "uint16", |
| 840 | .get = get_uint16, |
| 841 | .put = put_uint16, |
| 842 | }; |
| 843 | |
| 844 | /* 32 bit unsigned int */ |
| 845 | |
| 846 | static int get_uint32(QEMUFile *f, void *pv, size_t size) |
| 847 | { |
| 848 | uint32_t *v = pv; |
| 849 | qemu_get_be32s(f, v); |
| 850 | return 0; |
| 851 | } |
| 852 | |
Juan Quintela | 84e2e3e | 2009-09-29 22:48:20 +0200 | [diff] [blame] | 853 | static void put_uint32(QEMUFile *f, void *pv, size_t size) |
Juan Quintela | 9ed7d6a | 2009-08-20 19:42:25 +0200 | [diff] [blame] | 854 | { |
Juan Quintela | 84e2e3e | 2009-09-29 22:48:20 +0200 | [diff] [blame] | 855 | uint32_t *v = pv; |
Juan Quintela | 9ed7d6a | 2009-08-20 19:42:25 +0200 | [diff] [blame] | 856 | qemu_put_be32s(f, v); |
| 857 | } |
| 858 | |
| 859 | const VMStateInfo vmstate_info_uint32 = { |
| 860 | .name = "uint32", |
| 861 | .get = get_uint32, |
| 862 | .put = put_uint32, |
| 863 | }; |
| 864 | |
| 865 | /* 64 bit unsigned int */ |
| 866 | |
| 867 | static int get_uint64(QEMUFile *f, void *pv, size_t size) |
| 868 | { |
| 869 | uint64_t *v = pv; |
| 870 | qemu_get_be64s(f, v); |
| 871 | return 0; |
| 872 | } |
| 873 | |
Juan Quintela | 84e2e3e | 2009-09-29 22:48:20 +0200 | [diff] [blame] | 874 | static void put_uint64(QEMUFile *f, void *pv, size_t size) |
Juan Quintela | 9ed7d6a | 2009-08-20 19:42:25 +0200 | [diff] [blame] | 875 | { |
Juan Quintela | 84e2e3e | 2009-09-29 22:48:20 +0200 | [diff] [blame] | 876 | uint64_t *v = pv; |
Juan Quintela | 9ed7d6a | 2009-08-20 19:42:25 +0200 | [diff] [blame] | 877 | qemu_put_be64s(f, v); |
| 878 | } |
| 879 | |
| 880 | const VMStateInfo vmstate_info_uint64 = { |
| 881 | .name = "uint64", |
| 882 | .get = get_uint64, |
| 883 | .put = put_uint64, |
| 884 | }; |
| 885 | |
Juan Quintela | 80cd83e | 2009-09-10 03:04:36 +0200 | [diff] [blame] | 886 | /* 8 bit int. See that the received value is the same than the one |
| 887 | in the field */ |
| 888 | |
| 889 | static int get_uint8_equal(QEMUFile *f, void *pv, size_t size) |
| 890 | { |
| 891 | uint8_t *v = pv; |
| 892 | uint8_t v2; |
| 893 | qemu_get_8s(f, &v2); |
| 894 | |
| 895 | if (*v == v2) |
| 896 | return 0; |
| 897 | return -EINVAL; |
| 898 | } |
| 899 | |
| 900 | const VMStateInfo vmstate_info_uint8_equal = { |
Juan Quintela | aa1cce6 | 2009-10-15 19:16:06 +0200 | [diff] [blame] | 901 | .name = "uint8 equal", |
Juan Quintela | 80cd83e | 2009-09-10 03:04:36 +0200 | [diff] [blame] | 902 | .get = get_uint8_equal, |
| 903 | .put = put_uint8, |
| 904 | }; |
| 905 | |
Juan Quintela | dc3b83a | 2009-10-15 23:16:13 +0200 | [diff] [blame] | 906 | /* 16 bit unsigned int int. See that the received value is the same than the one |
| 907 | in the field */ |
| 908 | |
| 909 | static int get_uint16_equal(QEMUFile *f, void *pv, size_t size) |
| 910 | { |
| 911 | uint16_t *v = pv; |
| 912 | uint16_t v2; |
| 913 | qemu_get_be16s(f, &v2); |
| 914 | |
| 915 | if (*v == v2) |
| 916 | return 0; |
| 917 | return -EINVAL; |
| 918 | } |
| 919 | |
| 920 | const VMStateInfo vmstate_info_uint16_equal = { |
| 921 | .name = "uint16 equal", |
| 922 | .get = get_uint16_equal, |
| 923 | .put = put_uint16, |
| 924 | }; |
| 925 | |
Juan Quintela | dde0463 | 2009-08-20 19:42:26 +0200 | [diff] [blame] | 926 | /* timers */ |
| 927 | |
| 928 | static int get_timer(QEMUFile *f, void *pv, size_t size) |
| 929 | { |
| 930 | QEMUTimer *v = pv; |
| 931 | qemu_get_timer(f, v); |
| 932 | return 0; |
| 933 | } |
| 934 | |
Juan Quintela | 84e2e3e | 2009-09-29 22:48:20 +0200 | [diff] [blame] | 935 | static void put_timer(QEMUFile *f, void *pv, size_t size) |
Juan Quintela | dde0463 | 2009-08-20 19:42:26 +0200 | [diff] [blame] | 936 | { |
Juan Quintela | 84e2e3e | 2009-09-29 22:48:20 +0200 | [diff] [blame] | 937 | QEMUTimer *v = pv; |
Juan Quintela | dde0463 | 2009-08-20 19:42:26 +0200 | [diff] [blame] | 938 | qemu_put_timer(f, v); |
| 939 | } |
| 940 | |
| 941 | const VMStateInfo vmstate_info_timer = { |
| 942 | .name = "timer", |
| 943 | .get = get_timer, |
| 944 | .put = put_timer, |
| 945 | }; |
| 946 | |
Juan Quintela | 6f67c50 | 2009-08-20 19:42:35 +0200 | [diff] [blame] | 947 | /* uint8_t buffers */ |
| 948 | |
| 949 | static int get_buffer(QEMUFile *f, void *pv, size_t size) |
| 950 | { |
| 951 | uint8_t *v = pv; |
| 952 | qemu_get_buffer(f, v, size); |
| 953 | return 0; |
| 954 | } |
| 955 | |
Juan Quintela | 84e2e3e | 2009-09-29 22:48:20 +0200 | [diff] [blame] | 956 | static void put_buffer(QEMUFile *f, void *pv, size_t size) |
Juan Quintela | 6f67c50 | 2009-08-20 19:42:35 +0200 | [diff] [blame] | 957 | { |
Juan Quintela | 84e2e3e | 2009-09-29 22:48:20 +0200 | [diff] [blame] | 958 | uint8_t *v = pv; |
Juan Quintela | 6f67c50 | 2009-08-20 19:42:35 +0200 | [diff] [blame] | 959 | qemu_put_buffer(f, v, size); |
| 960 | } |
| 961 | |
| 962 | const VMStateInfo vmstate_info_buffer = { |
| 963 | .name = "buffer", |
| 964 | .get = get_buffer, |
| 965 | .put = put_buffer, |
| 966 | }; |
| 967 | |
Juan Quintela | 76507c7 | 2009-10-19 15:46:28 +0200 | [diff] [blame] | 968 | /* unused buffers: space that was used for some fields that are |
| 969 | not usefull anymore */ |
| 970 | |
| 971 | static int get_unused_buffer(QEMUFile *f, void *pv, size_t size) |
| 972 | { |
Jan Kiszka | 21174c3 | 2009-12-02 12:36:35 +0100 | [diff] [blame] | 973 | uint8_t buf[1024]; |
| 974 | int block_len; |
| 975 | |
| 976 | while (size > 0) { |
| 977 | block_len = MIN(sizeof(buf), size); |
| 978 | size -= block_len; |
| 979 | qemu_get_buffer(f, buf, block_len); |
| 980 | } |
| 981 | return 0; |
Juan Quintela | 76507c7 | 2009-10-19 15:46:28 +0200 | [diff] [blame] | 982 | } |
| 983 | |
| 984 | static void put_unused_buffer(QEMUFile *f, void *pv, size_t size) |
| 985 | { |
Jan Kiszka | 21174c3 | 2009-12-02 12:36:35 +0100 | [diff] [blame] | 986 | static const uint8_t buf[1024]; |
| 987 | int block_len; |
| 988 | |
| 989 | while (size > 0) { |
| 990 | block_len = MIN(sizeof(buf), size); |
| 991 | size -= block_len; |
| 992 | qemu_put_buffer(f, buf, block_len); |
| 993 | } |
Juan Quintela | 76507c7 | 2009-10-19 15:46:28 +0200 | [diff] [blame] | 994 | } |
| 995 | |
| 996 | const VMStateInfo vmstate_info_unused_buffer = { |
| 997 | .name = "unused_buffer", |
| 998 | .get = get_unused_buffer, |
| 999 | .put = put_unused_buffer, |
| 1000 | }; |
| 1001 | |
Alex Williamson | 7685ee6 | 2010-06-25 11:09:14 -0600 | [diff] [blame] | 1002 | typedef struct CompatEntry { |
| 1003 | char idstr[256]; |
| 1004 | int instance_id; |
| 1005 | } CompatEntry; |
| 1006 | |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 1007 | typedef struct SaveStateEntry { |
Blue Swirl | 72cf2d4 | 2009-09-12 07:36:22 +0000 | [diff] [blame] | 1008 | QTAILQ_ENTRY(SaveStateEntry) entry; |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 1009 | char idstr[256]; |
| 1010 | int instance_id; |
Jan Kiszka | 4d2ffa0 | 2010-05-15 13:32:40 +0200 | [diff] [blame] | 1011 | int alias_id; |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 1012 | int version_id; |
| 1013 | int section_id; |
lirans@il.ibm.com | c163b5c | 2009-11-02 15:40:58 +0200 | [diff] [blame] | 1014 | SaveSetParamsHandler *set_params; |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 1015 | SaveLiveStateHandler *save_live_state; |
| 1016 | SaveStateHandler *save_state; |
| 1017 | LoadStateHandler *load_state; |
Juan Quintela | 9ed7d6a | 2009-08-20 19:42:25 +0200 | [diff] [blame] | 1018 | const VMStateDescription *vmsd; |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 1019 | void *opaque; |
Alex Williamson | 7685ee6 | 2010-06-25 11:09:14 -0600 | [diff] [blame] | 1020 | CompatEntry *compat; |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 1021 | } SaveStateEntry; |
| 1022 | |
lirans@il.ibm.com | c163b5c | 2009-11-02 15:40:58 +0200 | [diff] [blame] | 1023 | |
Blue Swirl | 72cf2d4 | 2009-09-12 07:36:22 +0000 | [diff] [blame] | 1024 | static QTAILQ_HEAD(savevm_handlers, SaveStateEntry) savevm_handlers = |
| 1025 | QTAILQ_HEAD_INITIALIZER(savevm_handlers); |
Juan Quintela | 9ed7d6a | 2009-08-20 19:42:25 +0200 | [diff] [blame] | 1026 | static int global_section_id; |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 1027 | |
Juan Quintela | 8718e99 | 2009-09-01 02:12:31 +0200 | [diff] [blame] | 1028 | static int calculate_new_instance_id(const char *idstr) |
| 1029 | { |
| 1030 | SaveStateEntry *se; |
| 1031 | int instance_id = 0; |
| 1032 | |
Blue Swirl | 72cf2d4 | 2009-09-12 07:36:22 +0000 | [diff] [blame] | 1033 | QTAILQ_FOREACH(se, &savevm_handlers, entry) { |
Juan Quintela | 8718e99 | 2009-09-01 02:12:31 +0200 | [diff] [blame] | 1034 | if (strcmp(idstr, se->idstr) == 0 |
| 1035 | && instance_id <= se->instance_id) { |
| 1036 | instance_id = se->instance_id + 1; |
| 1037 | } |
| 1038 | } |
| 1039 | return instance_id; |
| 1040 | } |
| 1041 | |
Alex Williamson | 7685ee6 | 2010-06-25 11:09:14 -0600 | [diff] [blame] | 1042 | static int calculate_compat_instance_id(const char *idstr) |
| 1043 | { |
| 1044 | SaveStateEntry *se; |
| 1045 | int instance_id = 0; |
| 1046 | |
| 1047 | QTAILQ_FOREACH(se, &savevm_handlers, entry) { |
| 1048 | if (!se->compat) |
| 1049 | continue; |
| 1050 | |
| 1051 | if (strcmp(idstr, se->compat->idstr) == 0 |
| 1052 | && instance_id <= se->compat->instance_id) { |
| 1053 | instance_id = se->compat->instance_id + 1; |
| 1054 | } |
| 1055 | } |
| 1056 | return instance_id; |
| 1057 | } |
| 1058 | |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 1059 | /* TODO: Individual devices generally have very little idea about the rest |
| 1060 | of the system, so instance_id should be removed/replaced. |
| 1061 | Meanwhile pass -1 as instance_id if you do not already have a clearly |
| 1062 | distinguishing id for all instances of your device class. */ |
Alex Williamson | 0be71e3 | 2010-06-25 11:09:07 -0600 | [diff] [blame] | 1063 | int register_savevm_live(DeviceState *dev, |
| 1064 | const char *idstr, |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 1065 | int instance_id, |
| 1066 | int version_id, |
lirans@il.ibm.com | c163b5c | 2009-11-02 15:40:58 +0200 | [diff] [blame] | 1067 | SaveSetParamsHandler *set_params, |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 1068 | SaveLiveStateHandler *save_live_state, |
| 1069 | SaveStateHandler *save_state, |
| 1070 | LoadStateHandler *load_state, |
| 1071 | void *opaque) |
| 1072 | { |
Juan Quintela | 8718e99 | 2009-09-01 02:12:31 +0200 | [diff] [blame] | 1073 | SaveStateEntry *se; |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 1074 | |
lirans@il.ibm.com | c163b5c | 2009-11-02 15:40:58 +0200 | [diff] [blame] | 1075 | se = qemu_mallocz(sizeof(SaveStateEntry)); |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 1076 | se->version_id = version_id; |
| 1077 | se->section_id = global_section_id++; |
lirans@il.ibm.com | c163b5c | 2009-11-02 15:40:58 +0200 | [diff] [blame] | 1078 | se->set_params = set_params; |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 1079 | se->save_live_state = save_live_state; |
| 1080 | se->save_state = save_state; |
| 1081 | se->load_state = load_state; |
| 1082 | se->opaque = opaque; |
Juan Quintela | 9ed7d6a | 2009-08-20 19:42:25 +0200 | [diff] [blame] | 1083 | se->vmsd = NULL; |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 1084 | |
Alex Williamson | 7685ee6 | 2010-06-25 11:09:14 -0600 | [diff] [blame] | 1085 | if (dev && dev->parent_bus && dev->parent_bus->info->get_dev_path) { |
| 1086 | char *id = dev->parent_bus->info->get_dev_path(dev); |
| 1087 | if (id) { |
| 1088 | pstrcpy(se->idstr, sizeof(se->idstr), id); |
| 1089 | pstrcat(se->idstr, sizeof(se->idstr), "/"); |
| 1090 | qemu_free(id); |
| 1091 | |
| 1092 | se->compat = qemu_mallocz(sizeof(CompatEntry)); |
| 1093 | pstrcpy(se->compat->idstr, sizeof(se->compat->idstr), idstr); |
| 1094 | se->compat->instance_id = instance_id == -1 ? |
| 1095 | calculate_compat_instance_id(idstr) : instance_id; |
| 1096 | instance_id = -1; |
| 1097 | } |
| 1098 | } |
| 1099 | pstrcat(se->idstr, sizeof(se->idstr), idstr); |
| 1100 | |
Juan Quintela | 8718e99 | 2009-09-01 02:12:31 +0200 | [diff] [blame] | 1101 | if (instance_id == -1) { |
Alex Williamson | 7685ee6 | 2010-06-25 11:09:14 -0600 | [diff] [blame] | 1102 | se->instance_id = calculate_new_instance_id(se->idstr); |
Juan Quintela | 8718e99 | 2009-09-01 02:12:31 +0200 | [diff] [blame] | 1103 | } else { |
| 1104 | se->instance_id = instance_id; |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 1105 | } |
Alex Williamson | 7685ee6 | 2010-06-25 11:09:14 -0600 | [diff] [blame] | 1106 | assert(!se->compat || se->instance_id == 0); |
Juan Quintela | 8718e99 | 2009-09-01 02:12:31 +0200 | [diff] [blame] | 1107 | /* add at the end of list */ |
Blue Swirl | 72cf2d4 | 2009-09-12 07:36:22 +0000 | [diff] [blame] | 1108 | QTAILQ_INSERT_TAIL(&savevm_handlers, se, entry); |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 1109 | return 0; |
| 1110 | } |
| 1111 | |
Alex Williamson | 0be71e3 | 2010-06-25 11:09:07 -0600 | [diff] [blame] | 1112 | int register_savevm(DeviceState *dev, |
| 1113 | const char *idstr, |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 1114 | int instance_id, |
| 1115 | int version_id, |
| 1116 | SaveStateHandler *save_state, |
| 1117 | LoadStateHandler *load_state, |
| 1118 | void *opaque) |
| 1119 | { |
Alex Williamson | 0be71e3 | 2010-06-25 11:09:07 -0600 | [diff] [blame] | 1120 | return register_savevm_live(dev, idstr, instance_id, version_id, |
lirans@il.ibm.com | c163b5c | 2009-11-02 15:40:58 +0200 | [diff] [blame] | 1121 | NULL, NULL, save_state, load_state, opaque); |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 1122 | } |
| 1123 | |
Alex Williamson | 0be71e3 | 2010-06-25 11:09:07 -0600 | [diff] [blame] | 1124 | void unregister_savevm(DeviceState *dev, const char *idstr, void *opaque) |
aliguori | 41bd13a | 2009-04-17 17:10:59 +0000 | [diff] [blame] | 1125 | { |
Juan Quintela | 8718e99 | 2009-09-01 02:12:31 +0200 | [diff] [blame] | 1126 | SaveStateEntry *se, *new_se; |
Alex Williamson | 7685ee6 | 2010-06-25 11:09:14 -0600 | [diff] [blame] | 1127 | char id[256] = ""; |
| 1128 | |
| 1129 | if (dev && dev->parent_bus && dev->parent_bus->info->get_dev_path) { |
| 1130 | char *path = dev->parent_bus->info->get_dev_path(dev); |
| 1131 | if (path) { |
| 1132 | pstrcpy(id, sizeof(id), path); |
| 1133 | pstrcat(id, sizeof(id), "/"); |
| 1134 | qemu_free(path); |
| 1135 | } |
| 1136 | } |
| 1137 | pstrcat(id, sizeof(id), idstr); |
aliguori | 41bd13a | 2009-04-17 17:10:59 +0000 | [diff] [blame] | 1138 | |
Blue Swirl | 72cf2d4 | 2009-09-12 07:36:22 +0000 | [diff] [blame] | 1139 | QTAILQ_FOREACH_SAFE(se, &savevm_handlers, entry, new_se) { |
Alex Williamson | 7685ee6 | 2010-06-25 11:09:14 -0600 | [diff] [blame] | 1140 | if (strcmp(se->idstr, id) == 0 && se->opaque == opaque) { |
Blue Swirl | 72cf2d4 | 2009-09-12 07:36:22 +0000 | [diff] [blame] | 1141 | QTAILQ_REMOVE(&savevm_handlers, se, entry); |
Alex Williamson | 69e58af | 2010-07-21 08:35:31 -0600 | [diff] [blame^] | 1142 | if (se->compat) { |
| 1143 | qemu_free(se->compat); |
| 1144 | } |
Juan Quintela | 8718e99 | 2009-09-01 02:12:31 +0200 | [diff] [blame] | 1145 | qemu_free(se); |
aliguori | 41bd13a | 2009-04-17 17:10:59 +0000 | [diff] [blame] | 1146 | } |
aliguori | 41bd13a | 2009-04-17 17:10:59 +0000 | [diff] [blame] | 1147 | } |
| 1148 | } |
| 1149 | |
Alex Williamson | 0be71e3 | 2010-06-25 11:09:07 -0600 | [diff] [blame] | 1150 | int vmstate_register_with_alias_id(DeviceState *dev, int instance_id, |
Jan Kiszka | 4d2ffa0 | 2010-05-15 13:32:40 +0200 | [diff] [blame] | 1151 | const VMStateDescription *vmsd, |
| 1152 | void *opaque, int alias_id, |
| 1153 | int required_for_version) |
Juan Quintela | 9ed7d6a | 2009-08-20 19:42:25 +0200 | [diff] [blame] | 1154 | { |
Juan Quintela | 8718e99 | 2009-09-01 02:12:31 +0200 | [diff] [blame] | 1155 | SaveStateEntry *se; |
Juan Quintela | 9ed7d6a | 2009-08-20 19:42:25 +0200 | [diff] [blame] | 1156 | |
Jan Kiszka | 4d2ffa0 | 2010-05-15 13:32:40 +0200 | [diff] [blame] | 1157 | /* If this triggers, alias support can be dropped for the vmsd. */ |
| 1158 | assert(alias_id == -1 || required_for_version >= vmsd->minimum_version_id); |
| 1159 | |
lirans@il.ibm.com | c163b5c | 2009-11-02 15:40:58 +0200 | [diff] [blame] | 1160 | se = qemu_mallocz(sizeof(SaveStateEntry)); |
Juan Quintela | 9ed7d6a | 2009-08-20 19:42:25 +0200 | [diff] [blame] | 1161 | se->version_id = vmsd->version_id; |
| 1162 | se->section_id = global_section_id++; |
| 1163 | se->save_live_state = NULL; |
| 1164 | se->save_state = NULL; |
| 1165 | se->load_state = NULL; |
| 1166 | se->opaque = opaque; |
| 1167 | se->vmsd = vmsd; |
Jan Kiszka | 4d2ffa0 | 2010-05-15 13:32:40 +0200 | [diff] [blame] | 1168 | se->alias_id = alias_id; |
Juan Quintela | 9ed7d6a | 2009-08-20 19:42:25 +0200 | [diff] [blame] | 1169 | |
Alex Williamson | 7685ee6 | 2010-06-25 11:09:14 -0600 | [diff] [blame] | 1170 | if (dev && dev->parent_bus && dev->parent_bus->info->get_dev_path) { |
| 1171 | char *id = dev->parent_bus->info->get_dev_path(dev); |
| 1172 | if (id) { |
| 1173 | pstrcpy(se->idstr, sizeof(se->idstr), id); |
| 1174 | pstrcat(se->idstr, sizeof(se->idstr), "/"); |
| 1175 | qemu_free(id); |
| 1176 | |
| 1177 | se->compat = qemu_mallocz(sizeof(CompatEntry)); |
| 1178 | pstrcpy(se->compat->idstr, sizeof(se->compat->idstr), vmsd->name); |
| 1179 | se->compat->instance_id = instance_id == -1 ? |
| 1180 | calculate_compat_instance_id(vmsd->name) : instance_id; |
| 1181 | instance_id = -1; |
| 1182 | } |
| 1183 | } |
| 1184 | pstrcat(se->idstr, sizeof(se->idstr), vmsd->name); |
| 1185 | |
Juan Quintela | 8718e99 | 2009-09-01 02:12:31 +0200 | [diff] [blame] | 1186 | if (instance_id == -1) { |
Alex Williamson | 7685ee6 | 2010-06-25 11:09:14 -0600 | [diff] [blame] | 1187 | se->instance_id = calculate_new_instance_id(se->idstr); |
Juan Quintela | 8718e99 | 2009-09-01 02:12:31 +0200 | [diff] [blame] | 1188 | } else { |
| 1189 | se->instance_id = instance_id; |
Juan Quintela | 9ed7d6a | 2009-08-20 19:42:25 +0200 | [diff] [blame] | 1190 | } |
Alex Williamson | 7685ee6 | 2010-06-25 11:09:14 -0600 | [diff] [blame] | 1191 | assert(!se->compat || se->instance_id == 0); |
Juan Quintela | 8718e99 | 2009-09-01 02:12:31 +0200 | [diff] [blame] | 1192 | /* add at the end of list */ |
Blue Swirl | 72cf2d4 | 2009-09-12 07:36:22 +0000 | [diff] [blame] | 1193 | QTAILQ_INSERT_TAIL(&savevm_handlers, se, entry); |
Juan Quintela | 9ed7d6a | 2009-08-20 19:42:25 +0200 | [diff] [blame] | 1194 | return 0; |
| 1195 | } |
| 1196 | |
Alex Williamson | 0be71e3 | 2010-06-25 11:09:07 -0600 | [diff] [blame] | 1197 | int vmstate_register(DeviceState *dev, int instance_id, |
| 1198 | const VMStateDescription *vmsd, void *opaque) |
Jan Kiszka | 4d2ffa0 | 2010-05-15 13:32:40 +0200 | [diff] [blame] | 1199 | { |
Alex Williamson | 0be71e3 | 2010-06-25 11:09:07 -0600 | [diff] [blame] | 1200 | return vmstate_register_with_alias_id(dev, instance_id, vmsd, |
| 1201 | opaque, -1, 0); |
Jan Kiszka | 4d2ffa0 | 2010-05-15 13:32:40 +0200 | [diff] [blame] | 1202 | } |
| 1203 | |
Alex Williamson | 0be71e3 | 2010-06-25 11:09:07 -0600 | [diff] [blame] | 1204 | void vmstate_unregister(DeviceState *dev, const VMStateDescription *vmsd, |
| 1205 | void *opaque) |
Juan Quintela | 9ed7d6a | 2009-08-20 19:42:25 +0200 | [diff] [blame] | 1206 | { |
Juan Quintela | 1eb7538 | 2009-09-10 03:04:29 +0200 | [diff] [blame] | 1207 | SaveStateEntry *se, *new_se; |
| 1208 | |
Blue Swirl | 72cf2d4 | 2009-09-12 07:36:22 +0000 | [diff] [blame] | 1209 | QTAILQ_FOREACH_SAFE(se, &savevm_handlers, entry, new_se) { |
Juan Quintela | 1eb7538 | 2009-09-10 03:04:29 +0200 | [diff] [blame] | 1210 | if (se->vmsd == vmsd && se->opaque == opaque) { |
Blue Swirl | 72cf2d4 | 2009-09-12 07:36:22 +0000 | [diff] [blame] | 1211 | QTAILQ_REMOVE(&savevm_handlers, se, entry); |
Alex Williamson | 69e58af | 2010-07-21 08:35:31 -0600 | [diff] [blame^] | 1212 | if (se->compat) { |
| 1213 | qemu_free(se->compat); |
| 1214 | } |
Juan Quintela | 1eb7538 | 2009-09-10 03:04:29 +0200 | [diff] [blame] | 1215 | qemu_free(se); |
| 1216 | } |
| 1217 | } |
Juan Quintela | 9ed7d6a | 2009-08-20 19:42:25 +0200 | [diff] [blame] | 1218 | } |
| 1219 | |
Juan Quintela | 811814b | 2010-07-26 21:38:43 +0200 | [diff] [blame] | 1220 | static void vmstate_subsection_save(QEMUFile *f, const VMStateDescription *vmsd, |
| 1221 | void *opaque); |
| 1222 | static int vmstate_subsection_load(QEMUFile *f, const VMStateDescription *vmsd, |
| 1223 | void *opaque); |
| 1224 | |
Juan Quintela | 9ed7d6a | 2009-08-20 19:42:25 +0200 | [diff] [blame] | 1225 | int vmstate_load_state(QEMUFile *f, const VMStateDescription *vmsd, |
| 1226 | void *opaque, int version_id) |
| 1227 | { |
| 1228 | VMStateField *field = vmsd->fields; |
Juan Quintela | 811814b | 2010-07-26 21:38:43 +0200 | [diff] [blame] | 1229 | int ret; |
Juan Quintela | 9ed7d6a | 2009-08-20 19:42:25 +0200 | [diff] [blame] | 1230 | |
| 1231 | if (version_id > vmsd->version_id) { |
| 1232 | return -EINVAL; |
| 1233 | } |
| 1234 | if (version_id < vmsd->minimum_version_id_old) { |
| 1235 | return -EINVAL; |
| 1236 | } |
| 1237 | if (version_id < vmsd->minimum_version_id) { |
| 1238 | return vmsd->load_state_old(f, opaque, version_id); |
| 1239 | } |
Juan Quintela | fd4d52d | 2009-09-10 03:04:31 +0200 | [diff] [blame] | 1240 | if (vmsd->pre_load) { |
| 1241 | int ret = vmsd->pre_load(opaque); |
| 1242 | if (ret) |
| 1243 | return ret; |
| 1244 | } |
Juan Quintela | 9ed7d6a | 2009-08-20 19:42:25 +0200 | [diff] [blame] | 1245 | while(field->name) { |
Juan Quintela | f11f6a5 | 2009-09-29 22:49:07 +0200 | [diff] [blame] | 1246 | if ((field->field_exists && |
| 1247 | field->field_exists(opaque, version_id)) || |
| 1248 | (!field->field_exists && |
| 1249 | field->version_id <= version_id)) { |
Juan Quintela | f752a6a | 2009-08-20 19:42:27 +0200 | [diff] [blame] | 1250 | void *base_addr = opaque + field->offset; |
Juan Quintela | 811814b | 2010-07-26 21:38:43 +0200 | [diff] [blame] | 1251 | int i, n_elems = 1; |
Juan Quintela | e61a1e0 | 2009-12-02 12:36:38 +0100 | [diff] [blame] | 1252 | int size = field->size; |
Juan Quintela | 9ed7d6a | 2009-08-20 19:42:25 +0200 | [diff] [blame] | 1253 | |
Juan Quintela | e61a1e0 | 2009-12-02 12:36:38 +0100 | [diff] [blame] | 1254 | if (field->flags & VMS_VBUFFER) { |
| 1255 | size = *(int32_t *)(opaque+field->size_offset); |
Juan Quintela | 33599e2 | 2009-12-02 12:36:43 +0100 | [diff] [blame] | 1256 | if (field->flags & VMS_MULTIPLY) { |
| 1257 | size *= field->size; |
| 1258 | } |
Juan Quintela | e61a1e0 | 2009-12-02 12:36:38 +0100 | [diff] [blame] | 1259 | } |
Juan Quintela | f752a6a | 2009-08-20 19:42:27 +0200 | [diff] [blame] | 1260 | if (field->flags & VMS_ARRAY) { |
| 1261 | n_elems = field->num; |
Juan Quintela | d669828 | 2009-10-16 11:27:17 +0200 | [diff] [blame] | 1262 | } else if (field->flags & VMS_VARRAY_INT32) { |
| 1263 | n_elems = *(int32_t *)(opaque+field->num_offset); |
Juan Quintela | bdb4941 | 2009-10-16 11:35:18 +0200 | [diff] [blame] | 1264 | } else if (field->flags & VMS_VARRAY_UINT16) { |
| 1265 | n_elems = *(uint16_t *)(opaque+field->num_offset); |
Juan Quintela | dde0463 | 2009-08-20 19:42:26 +0200 | [diff] [blame] | 1266 | } |
Juan Quintela | f752a6a | 2009-08-20 19:42:27 +0200 | [diff] [blame] | 1267 | if (field->flags & VMS_POINTER) { |
Juan Quintela | e61a1e0 | 2009-12-02 12:36:38 +0100 | [diff] [blame] | 1268 | base_addr = *(void **)base_addr + field->start; |
Juan Quintela | f752a6a | 2009-08-20 19:42:27 +0200 | [diff] [blame] | 1269 | } |
| 1270 | for (i = 0; i < n_elems; i++) { |
Juan Quintela | e61a1e0 | 2009-12-02 12:36:38 +0100 | [diff] [blame] | 1271 | void *addr = base_addr + size * i; |
Juan Quintela | ec245e2 | 2009-08-20 19:42:29 +0200 | [diff] [blame] | 1272 | |
Juan Quintela | 19df438 | 2009-09-29 22:48:41 +0200 | [diff] [blame] | 1273 | if (field->flags & VMS_ARRAY_OF_POINTER) { |
| 1274 | addr = *(void **)addr; |
| 1275 | } |
Juan Quintela | ec245e2 | 2009-08-20 19:42:29 +0200 | [diff] [blame] | 1276 | if (field->flags & VMS_STRUCT) { |
Juan Quintela | fa3aad2 | 2009-08-28 15:28:25 +0200 | [diff] [blame] | 1277 | ret = vmstate_load_state(f, field->vmsd, addr, field->vmsd->version_id); |
Juan Quintela | ec245e2 | 2009-08-20 19:42:29 +0200 | [diff] [blame] | 1278 | } else { |
Juan Quintela | e61a1e0 | 2009-12-02 12:36:38 +0100 | [diff] [blame] | 1279 | ret = field->info->get(f, addr, size); |
Juan Quintela | ec245e2 | 2009-08-20 19:42:29 +0200 | [diff] [blame] | 1280 | |
| 1281 | } |
Juan Quintela | f752a6a | 2009-08-20 19:42:27 +0200 | [diff] [blame] | 1282 | if (ret < 0) { |
| 1283 | return ret; |
| 1284 | } |
Juan Quintela | 9ed7d6a | 2009-08-20 19:42:25 +0200 | [diff] [blame] | 1285 | } |
| 1286 | } |
| 1287 | field++; |
| 1288 | } |
Juan Quintela | 811814b | 2010-07-26 21:38:43 +0200 | [diff] [blame] | 1289 | ret = vmstate_subsection_load(f, vmsd, opaque); |
| 1290 | if (ret != 0) { |
| 1291 | return ret; |
| 1292 | } |
Juan Quintela | 752ff2f | 2009-09-10 03:04:30 +0200 | [diff] [blame] | 1293 | if (vmsd->post_load) { |
Juan Quintela | e59fb37 | 2009-09-29 22:48:21 +0200 | [diff] [blame] | 1294 | return vmsd->post_load(opaque, version_id); |
Juan Quintela | 752ff2f | 2009-09-10 03:04:30 +0200 | [diff] [blame] | 1295 | } |
Juan Quintela | 9ed7d6a | 2009-08-20 19:42:25 +0200 | [diff] [blame] | 1296 | return 0; |
| 1297 | } |
| 1298 | |
| 1299 | void vmstate_save_state(QEMUFile *f, const VMStateDescription *vmsd, |
Juan Quintela | 84e2e3e | 2009-09-29 22:48:20 +0200 | [diff] [blame] | 1300 | void *opaque) |
Juan Quintela | 9ed7d6a | 2009-08-20 19:42:25 +0200 | [diff] [blame] | 1301 | { |
| 1302 | VMStateField *field = vmsd->fields; |
| 1303 | |
Juan Quintela | 8fb0791 | 2009-09-10 03:04:32 +0200 | [diff] [blame] | 1304 | if (vmsd->pre_save) { |
| 1305 | vmsd->pre_save(opaque); |
| 1306 | } |
Juan Quintela | 9ed7d6a | 2009-08-20 19:42:25 +0200 | [diff] [blame] | 1307 | while(field->name) { |
Juan Quintela | f11f6a5 | 2009-09-29 22:49:07 +0200 | [diff] [blame] | 1308 | if (!field->field_exists || |
| 1309 | field->field_exists(opaque, vmsd->version_id)) { |
| 1310 | void *base_addr = opaque + field->offset; |
| 1311 | int i, n_elems = 1; |
Juan Quintela | e61a1e0 | 2009-12-02 12:36:38 +0100 | [diff] [blame] | 1312 | int size = field->size; |
Juan Quintela | dde0463 | 2009-08-20 19:42:26 +0200 | [diff] [blame] | 1313 | |
Juan Quintela | e61a1e0 | 2009-12-02 12:36:38 +0100 | [diff] [blame] | 1314 | if (field->flags & VMS_VBUFFER) { |
| 1315 | size = *(int32_t *)(opaque+field->size_offset); |
Juan Quintela | 33599e2 | 2009-12-02 12:36:43 +0100 | [diff] [blame] | 1316 | if (field->flags & VMS_MULTIPLY) { |
| 1317 | size *= field->size; |
| 1318 | } |
Juan Quintela | e61a1e0 | 2009-12-02 12:36:38 +0100 | [diff] [blame] | 1319 | } |
Juan Quintela | f11f6a5 | 2009-09-29 22:49:07 +0200 | [diff] [blame] | 1320 | if (field->flags & VMS_ARRAY) { |
| 1321 | n_elems = field->num; |
Juan Quintela | d669828 | 2009-10-16 11:27:17 +0200 | [diff] [blame] | 1322 | } else if (field->flags & VMS_VARRAY_INT32) { |
| 1323 | n_elems = *(int32_t *)(opaque+field->num_offset); |
Juan Quintela | bdb4941 | 2009-10-16 11:35:18 +0200 | [diff] [blame] | 1324 | } else if (field->flags & VMS_VARRAY_UINT16) { |
| 1325 | n_elems = *(uint16_t *)(opaque+field->num_offset); |
Juan Quintela | f11f6a5 | 2009-09-29 22:49:07 +0200 | [diff] [blame] | 1326 | } |
| 1327 | if (field->flags & VMS_POINTER) { |
Juan Quintela | e61a1e0 | 2009-12-02 12:36:38 +0100 | [diff] [blame] | 1328 | base_addr = *(void **)base_addr + field->start; |
Juan Quintela | f11f6a5 | 2009-09-29 22:49:07 +0200 | [diff] [blame] | 1329 | } |
| 1330 | for (i = 0; i < n_elems; i++) { |
Juan Quintela | e61a1e0 | 2009-12-02 12:36:38 +0100 | [diff] [blame] | 1331 | void *addr = base_addr + size * i; |
Juan Quintela | ec245e2 | 2009-08-20 19:42:29 +0200 | [diff] [blame] | 1332 | |
Juan Quintela | 8595387 | 2009-12-02 12:36:37 +0100 | [diff] [blame] | 1333 | if (field->flags & VMS_ARRAY_OF_POINTER) { |
| 1334 | addr = *(void **)addr; |
| 1335 | } |
Juan Quintela | f11f6a5 | 2009-09-29 22:49:07 +0200 | [diff] [blame] | 1336 | if (field->flags & VMS_STRUCT) { |
| 1337 | vmstate_save_state(f, field->vmsd, addr); |
| 1338 | } else { |
Juan Quintela | e61a1e0 | 2009-12-02 12:36:38 +0100 | [diff] [blame] | 1339 | field->info->put(f, addr, size); |
Juan Quintela | f11f6a5 | 2009-09-29 22:49:07 +0200 | [diff] [blame] | 1340 | } |
Juan Quintela | ec245e2 | 2009-08-20 19:42:29 +0200 | [diff] [blame] | 1341 | } |
Juan Quintela | f752a6a | 2009-08-20 19:42:27 +0200 | [diff] [blame] | 1342 | } |
Juan Quintela | 9ed7d6a | 2009-08-20 19:42:25 +0200 | [diff] [blame] | 1343 | field++; |
| 1344 | } |
Juan Quintela | 811814b | 2010-07-26 21:38:43 +0200 | [diff] [blame] | 1345 | vmstate_subsection_save(f, vmsd, opaque); |
Juan Quintela | 9ed7d6a | 2009-08-20 19:42:25 +0200 | [diff] [blame] | 1346 | } |
| 1347 | |
Juan Quintela | 4082be4 | 2009-08-20 19:42:24 +0200 | [diff] [blame] | 1348 | static int vmstate_load(QEMUFile *f, SaveStateEntry *se, int version_id) |
| 1349 | { |
Juan Quintela | 9ed7d6a | 2009-08-20 19:42:25 +0200 | [diff] [blame] | 1350 | if (!se->vmsd) { /* Old style */ |
| 1351 | return se->load_state(f, se->opaque, version_id); |
| 1352 | } |
| 1353 | return vmstate_load_state(f, se->vmsd, se->opaque, version_id); |
Juan Quintela | 4082be4 | 2009-08-20 19:42:24 +0200 | [diff] [blame] | 1354 | } |
| 1355 | |
| 1356 | static void vmstate_save(QEMUFile *f, SaveStateEntry *se) |
| 1357 | { |
Juan Quintela | 9ed7d6a | 2009-08-20 19:42:25 +0200 | [diff] [blame] | 1358 | if (!se->vmsd) { /* Old style */ |
| 1359 | se->save_state(f, se->opaque); |
| 1360 | return; |
| 1361 | } |
| 1362 | vmstate_save_state(f,se->vmsd, se->opaque); |
Juan Quintela | 4082be4 | 2009-08-20 19:42:24 +0200 | [diff] [blame] | 1363 | } |
| 1364 | |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 1365 | #define QEMU_VM_FILE_MAGIC 0x5145564d |
| 1366 | #define QEMU_VM_FILE_VERSION_COMPAT 0x00000002 |
| 1367 | #define QEMU_VM_FILE_VERSION 0x00000003 |
| 1368 | |
| 1369 | #define QEMU_VM_EOF 0x00 |
| 1370 | #define QEMU_VM_SECTION_START 0x01 |
| 1371 | #define QEMU_VM_SECTION_PART 0x02 |
| 1372 | #define QEMU_VM_SECTION_END 0x03 |
| 1373 | #define QEMU_VM_SECTION_FULL 0x04 |
Juan Quintela | 811814b | 2010-07-26 21:38:43 +0200 | [diff] [blame] | 1374 | #define QEMU_VM_SUBSECTION 0x05 |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 1375 | |
Jan Kiszka | f327aa0 | 2009-11-30 18:21:21 +0100 | [diff] [blame] | 1376 | int qemu_savevm_state_begin(Monitor *mon, QEMUFile *f, int blk_enable, |
| 1377 | int shared) |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 1378 | { |
| 1379 | SaveStateEntry *se; |
| 1380 | |
lirans@il.ibm.com | c163b5c | 2009-11-02 15:40:58 +0200 | [diff] [blame] | 1381 | QTAILQ_FOREACH(se, &savevm_handlers, entry) { |
| 1382 | if(se->set_params == NULL) { |
| 1383 | continue; |
| 1384 | } |
| 1385 | se->set_params(blk_enable, shared, se->opaque); |
| 1386 | } |
| 1387 | |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 1388 | qemu_put_be32(f, QEMU_VM_FILE_MAGIC); |
| 1389 | qemu_put_be32(f, QEMU_VM_FILE_VERSION); |
| 1390 | |
Blue Swirl | 72cf2d4 | 2009-09-12 07:36:22 +0000 | [diff] [blame] | 1391 | QTAILQ_FOREACH(se, &savevm_handlers, entry) { |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 1392 | int len; |
| 1393 | |
| 1394 | if (se->save_live_state == NULL) |
| 1395 | continue; |
| 1396 | |
| 1397 | /* Section type */ |
| 1398 | qemu_put_byte(f, QEMU_VM_SECTION_START); |
| 1399 | qemu_put_be32(f, se->section_id); |
| 1400 | |
| 1401 | /* ID string */ |
| 1402 | len = strlen(se->idstr); |
| 1403 | qemu_put_byte(f, len); |
| 1404 | qemu_put_buffer(f, (uint8_t *)se->idstr, len); |
| 1405 | |
| 1406 | qemu_put_be32(f, se->instance_id); |
| 1407 | qemu_put_be32(f, se->version_id); |
| 1408 | |
Jan Kiszka | f327aa0 | 2009-11-30 18:21:21 +0100 | [diff] [blame] | 1409 | se->save_live_state(mon, f, QEMU_VM_SECTION_START, se->opaque); |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 1410 | } |
| 1411 | |
Jan Kiszka | 4ec7fcc | 2009-11-30 18:21:21 +0100 | [diff] [blame] | 1412 | if (qemu_file_has_error(f)) { |
Jan Kiszka | f327aa0 | 2009-11-30 18:21:21 +0100 | [diff] [blame] | 1413 | qemu_savevm_state_cancel(mon, f); |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 1414 | return -EIO; |
Jan Kiszka | 4ec7fcc | 2009-11-30 18:21:21 +0100 | [diff] [blame] | 1415 | } |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 1416 | |
| 1417 | return 0; |
| 1418 | } |
| 1419 | |
Jan Kiszka | f327aa0 | 2009-11-30 18:21:21 +0100 | [diff] [blame] | 1420 | int qemu_savevm_state_iterate(Monitor *mon, QEMUFile *f) |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 1421 | { |
| 1422 | SaveStateEntry *se; |
| 1423 | int ret = 1; |
| 1424 | |
Blue Swirl | 72cf2d4 | 2009-09-12 07:36:22 +0000 | [diff] [blame] | 1425 | QTAILQ_FOREACH(se, &savevm_handlers, entry) { |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 1426 | if (se->save_live_state == NULL) |
| 1427 | continue; |
| 1428 | |
| 1429 | /* Section type */ |
| 1430 | qemu_put_byte(f, QEMU_VM_SECTION_PART); |
| 1431 | qemu_put_be32(f, se->section_id); |
| 1432 | |
Jan Kiszka | 90697be | 2009-12-01 15:19:55 +0100 | [diff] [blame] | 1433 | ret = se->save_live_state(mon, f, QEMU_VM_SECTION_PART, se->opaque); |
| 1434 | if (!ret) { |
| 1435 | /* Do not proceed to the next vmstate before this one reported |
| 1436 | completion of the current stage. This serializes the migration |
| 1437 | and reduces the probability that a faster changing state is |
| 1438 | synchronized over and over again. */ |
| 1439 | break; |
| 1440 | } |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 1441 | } |
| 1442 | |
| 1443 | if (ret) |
| 1444 | return 1; |
| 1445 | |
Jan Kiszka | 4ec7fcc | 2009-11-30 18:21:21 +0100 | [diff] [blame] | 1446 | if (qemu_file_has_error(f)) { |
Jan Kiszka | f327aa0 | 2009-11-30 18:21:21 +0100 | [diff] [blame] | 1447 | qemu_savevm_state_cancel(mon, f); |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 1448 | return -EIO; |
Jan Kiszka | 4ec7fcc | 2009-11-30 18:21:21 +0100 | [diff] [blame] | 1449 | } |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 1450 | |
| 1451 | return 0; |
| 1452 | } |
| 1453 | |
Jan Kiszka | f327aa0 | 2009-11-30 18:21:21 +0100 | [diff] [blame] | 1454 | int qemu_savevm_state_complete(Monitor *mon, QEMUFile *f) |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 1455 | { |
| 1456 | SaveStateEntry *se; |
| 1457 | |
Jan Kiszka | ea375f9 | 2010-03-01 19:10:30 +0100 | [diff] [blame] | 1458 | cpu_synchronize_all_states(); |
| 1459 | |
Blue Swirl | 72cf2d4 | 2009-09-12 07:36:22 +0000 | [diff] [blame] | 1460 | QTAILQ_FOREACH(se, &savevm_handlers, entry) { |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 1461 | if (se->save_live_state == NULL) |
| 1462 | continue; |
| 1463 | |
| 1464 | /* Section type */ |
| 1465 | qemu_put_byte(f, QEMU_VM_SECTION_END); |
| 1466 | qemu_put_be32(f, se->section_id); |
| 1467 | |
Jan Kiszka | f327aa0 | 2009-11-30 18:21:21 +0100 | [diff] [blame] | 1468 | se->save_live_state(mon, f, QEMU_VM_SECTION_END, se->opaque); |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 1469 | } |
| 1470 | |
Blue Swirl | 72cf2d4 | 2009-09-12 07:36:22 +0000 | [diff] [blame] | 1471 | QTAILQ_FOREACH(se, &savevm_handlers, entry) { |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 1472 | int len; |
| 1473 | |
Juan Quintela | 9ed7d6a | 2009-08-20 19:42:25 +0200 | [diff] [blame] | 1474 | if (se->save_state == NULL && se->vmsd == NULL) |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 1475 | continue; |
| 1476 | |
| 1477 | /* Section type */ |
| 1478 | qemu_put_byte(f, QEMU_VM_SECTION_FULL); |
| 1479 | qemu_put_be32(f, se->section_id); |
| 1480 | |
| 1481 | /* ID string */ |
| 1482 | len = strlen(se->idstr); |
| 1483 | qemu_put_byte(f, len); |
| 1484 | qemu_put_buffer(f, (uint8_t *)se->idstr, len); |
| 1485 | |
| 1486 | qemu_put_be32(f, se->instance_id); |
| 1487 | qemu_put_be32(f, se->version_id); |
| 1488 | |
Juan Quintela | 4082be4 | 2009-08-20 19:42:24 +0200 | [diff] [blame] | 1489 | vmstate_save(f, se); |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 1490 | } |
| 1491 | |
| 1492 | qemu_put_byte(f, QEMU_VM_EOF); |
| 1493 | |
| 1494 | if (qemu_file_has_error(f)) |
| 1495 | return -EIO; |
| 1496 | |
| 1497 | return 0; |
| 1498 | } |
| 1499 | |
Jan Kiszka | f327aa0 | 2009-11-30 18:21:21 +0100 | [diff] [blame] | 1500 | void qemu_savevm_state_cancel(Monitor *mon, QEMUFile *f) |
Jan Kiszka | 4ec7fcc | 2009-11-30 18:21:21 +0100 | [diff] [blame] | 1501 | { |
| 1502 | SaveStateEntry *se; |
| 1503 | |
| 1504 | QTAILQ_FOREACH(se, &savevm_handlers, entry) { |
| 1505 | if (se->save_live_state) { |
Jan Kiszka | f327aa0 | 2009-11-30 18:21:21 +0100 | [diff] [blame] | 1506 | se->save_live_state(mon, f, -1, se->opaque); |
Jan Kiszka | 4ec7fcc | 2009-11-30 18:21:21 +0100 | [diff] [blame] | 1507 | } |
| 1508 | } |
| 1509 | } |
| 1510 | |
Jan Kiszka | f327aa0 | 2009-11-30 18:21:21 +0100 | [diff] [blame] | 1511 | static int qemu_savevm_state(Monitor *mon, QEMUFile *f) |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 1512 | { |
| 1513 | int saved_vm_running; |
| 1514 | int ret; |
| 1515 | |
| 1516 | saved_vm_running = vm_running; |
| 1517 | vm_stop(0); |
| 1518 | |
| 1519 | bdrv_flush_all(); |
| 1520 | |
Jan Kiszka | f327aa0 | 2009-11-30 18:21:21 +0100 | [diff] [blame] | 1521 | ret = qemu_savevm_state_begin(mon, f, 0, 0); |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 1522 | if (ret < 0) |
| 1523 | goto out; |
| 1524 | |
| 1525 | do { |
Jan Kiszka | f327aa0 | 2009-11-30 18:21:21 +0100 | [diff] [blame] | 1526 | ret = qemu_savevm_state_iterate(mon, f); |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 1527 | if (ret < 0) |
| 1528 | goto out; |
| 1529 | } while (ret == 0); |
| 1530 | |
Jan Kiszka | f327aa0 | 2009-11-30 18:21:21 +0100 | [diff] [blame] | 1531 | ret = qemu_savevm_state_complete(mon, f); |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 1532 | |
| 1533 | out: |
| 1534 | if (qemu_file_has_error(f)) |
| 1535 | ret = -EIO; |
| 1536 | |
| 1537 | if (!ret && saved_vm_running) |
| 1538 | vm_start(); |
| 1539 | |
| 1540 | return ret; |
| 1541 | } |
| 1542 | |
| 1543 | static SaveStateEntry *find_se(const char *idstr, int instance_id) |
| 1544 | { |
| 1545 | SaveStateEntry *se; |
| 1546 | |
Blue Swirl | 72cf2d4 | 2009-09-12 07:36:22 +0000 | [diff] [blame] | 1547 | QTAILQ_FOREACH(se, &savevm_handlers, entry) { |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 1548 | if (!strcmp(se->idstr, idstr) && |
Jan Kiszka | 4d2ffa0 | 2010-05-15 13:32:40 +0200 | [diff] [blame] | 1549 | (instance_id == se->instance_id || |
| 1550 | instance_id == se->alias_id)) |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 1551 | return se; |
Alex Williamson | 7685ee6 | 2010-06-25 11:09:14 -0600 | [diff] [blame] | 1552 | /* Migrating from an older version? */ |
| 1553 | if (strstr(se->idstr, idstr) && se->compat) { |
| 1554 | if (!strcmp(se->compat->idstr, idstr) && |
| 1555 | (instance_id == se->compat->instance_id || |
| 1556 | instance_id == se->alias_id)) |
| 1557 | return se; |
| 1558 | } |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 1559 | } |
| 1560 | return NULL; |
| 1561 | } |
| 1562 | |
Juan Quintela | 811814b | 2010-07-26 21:38:43 +0200 | [diff] [blame] | 1563 | static const VMStateDescription *vmstate_get_subsection(const VMStateSubsection *sub, char *idstr) |
| 1564 | { |
| 1565 | while(sub && sub->needed) { |
| 1566 | if (strcmp(idstr, sub->vmsd->name) == 0) { |
| 1567 | return sub->vmsd; |
| 1568 | } |
| 1569 | sub++; |
| 1570 | } |
| 1571 | return NULL; |
| 1572 | } |
| 1573 | |
| 1574 | static int vmstate_subsection_load(QEMUFile *f, const VMStateDescription *vmsd, |
| 1575 | void *opaque) |
| 1576 | { |
| 1577 | while (qemu_peek_byte(f) == QEMU_VM_SUBSECTION) { |
| 1578 | char idstr[256]; |
| 1579 | int ret; |
| 1580 | uint8_t version_id, subsection, len; |
| 1581 | const VMStateDescription *sub_vmsd; |
| 1582 | |
| 1583 | subsection = qemu_get_byte(f); |
| 1584 | len = qemu_get_byte(f); |
| 1585 | qemu_get_buffer(f, (uint8_t *)idstr, len); |
| 1586 | idstr[len] = 0; |
| 1587 | version_id = qemu_get_be32(f); |
| 1588 | |
| 1589 | sub_vmsd = vmstate_get_subsection(vmsd->subsections, idstr); |
| 1590 | if (sub_vmsd == NULL) { |
| 1591 | return -ENOENT; |
| 1592 | } |
| 1593 | ret = vmstate_load_state(f, sub_vmsd, opaque, version_id); |
| 1594 | if (ret) { |
| 1595 | return ret; |
| 1596 | } |
| 1597 | } |
| 1598 | return 0; |
| 1599 | } |
| 1600 | |
| 1601 | static void vmstate_subsection_save(QEMUFile *f, const VMStateDescription *vmsd, |
| 1602 | void *opaque) |
| 1603 | { |
| 1604 | const VMStateSubsection *sub = vmsd->subsections; |
| 1605 | |
| 1606 | while (sub && sub->needed) { |
| 1607 | if (sub->needed(opaque)) { |
| 1608 | const VMStateDescription *vmsd = sub->vmsd; |
| 1609 | uint8_t len; |
| 1610 | |
| 1611 | qemu_put_byte(f, QEMU_VM_SUBSECTION); |
| 1612 | len = strlen(vmsd->name); |
| 1613 | qemu_put_byte(f, len); |
| 1614 | qemu_put_buffer(f, (uint8_t *)vmsd->name, len); |
| 1615 | qemu_put_be32(f, vmsd->version_id); |
| 1616 | vmstate_save_state(f, vmsd, opaque); |
| 1617 | } |
| 1618 | sub++; |
| 1619 | } |
| 1620 | } |
| 1621 | |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 1622 | typedef struct LoadStateEntry { |
Blue Swirl | 72cf2d4 | 2009-09-12 07:36:22 +0000 | [diff] [blame] | 1623 | QLIST_ENTRY(LoadStateEntry) entry; |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 1624 | SaveStateEntry *se; |
| 1625 | int section_id; |
| 1626 | int version_id; |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 1627 | } LoadStateEntry; |
| 1628 | |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 1629 | int qemu_loadvm_state(QEMUFile *f) |
| 1630 | { |
Blue Swirl | 72cf2d4 | 2009-09-12 07:36:22 +0000 | [diff] [blame] | 1631 | QLIST_HEAD(, LoadStateEntry) loadvm_handlers = |
| 1632 | QLIST_HEAD_INITIALIZER(loadvm_handlers); |
Juan Quintela | f4dbb8d | 2009-09-01 02:12:33 +0200 | [diff] [blame] | 1633 | LoadStateEntry *le, *new_le; |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 1634 | uint8_t section_type; |
| 1635 | unsigned int v; |
| 1636 | int ret; |
| 1637 | |
| 1638 | v = qemu_get_be32(f); |
| 1639 | if (v != QEMU_VM_FILE_MAGIC) |
| 1640 | return -EINVAL; |
| 1641 | |
| 1642 | v = qemu_get_be32(f); |
Juan Quintela | bbfe140 | 2009-09-10 03:04:24 +0200 | [diff] [blame] | 1643 | if (v == QEMU_VM_FILE_VERSION_COMPAT) { |
| 1644 | fprintf(stderr, "SaveVM v2 format is obsolete and don't work anymore\n"); |
| 1645 | return -ENOTSUP; |
| 1646 | } |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 1647 | if (v != QEMU_VM_FILE_VERSION) |
| 1648 | return -ENOTSUP; |
| 1649 | |
| 1650 | while ((section_type = qemu_get_byte(f)) != QEMU_VM_EOF) { |
| 1651 | uint32_t instance_id, version_id, section_id; |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 1652 | SaveStateEntry *se; |
| 1653 | char idstr[257]; |
| 1654 | int len; |
| 1655 | |
| 1656 | switch (section_type) { |
| 1657 | case QEMU_VM_SECTION_START: |
| 1658 | case QEMU_VM_SECTION_FULL: |
| 1659 | /* Read section start */ |
| 1660 | section_id = qemu_get_be32(f); |
| 1661 | len = qemu_get_byte(f); |
| 1662 | qemu_get_buffer(f, (uint8_t *)idstr, len); |
| 1663 | idstr[len] = 0; |
| 1664 | instance_id = qemu_get_be32(f); |
| 1665 | version_id = qemu_get_be32(f); |
| 1666 | |
| 1667 | /* Find savevm section */ |
| 1668 | se = find_se(idstr, instance_id); |
| 1669 | if (se == NULL) { |
| 1670 | fprintf(stderr, "Unknown savevm section or instance '%s' %d\n", idstr, instance_id); |
| 1671 | ret = -EINVAL; |
| 1672 | goto out; |
| 1673 | } |
| 1674 | |
| 1675 | /* Validate version */ |
| 1676 | if (version_id > se->version_id) { |
| 1677 | fprintf(stderr, "savevm: unsupported version %d for '%s' v%d\n", |
| 1678 | version_id, idstr, se->version_id); |
| 1679 | ret = -EINVAL; |
| 1680 | goto out; |
| 1681 | } |
| 1682 | |
| 1683 | /* Add entry */ |
| 1684 | le = qemu_mallocz(sizeof(*le)); |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 1685 | |
| 1686 | le->se = se; |
| 1687 | le->section_id = section_id; |
| 1688 | le->version_id = version_id; |
Blue Swirl | 72cf2d4 | 2009-09-12 07:36:22 +0000 | [diff] [blame] | 1689 | QLIST_INSERT_HEAD(&loadvm_handlers, le, entry); |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 1690 | |
Juan Quintela | 4082be4 | 2009-08-20 19:42:24 +0200 | [diff] [blame] | 1691 | ret = vmstate_load(f, le->se, le->version_id); |
Juan Quintela | b5a22e4 | 2009-08-20 19:42:23 +0200 | [diff] [blame] | 1692 | if (ret < 0) { |
| 1693 | fprintf(stderr, "qemu: warning: error while loading state for instance 0x%x of device '%s'\n", |
| 1694 | instance_id, idstr); |
| 1695 | goto out; |
| 1696 | } |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 1697 | break; |
| 1698 | case QEMU_VM_SECTION_PART: |
| 1699 | case QEMU_VM_SECTION_END: |
| 1700 | section_id = qemu_get_be32(f); |
| 1701 | |
Blue Swirl | 72cf2d4 | 2009-09-12 07:36:22 +0000 | [diff] [blame] | 1702 | QLIST_FOREACH(le, &loadvm_handlers, entry) { |
Juan Quintela | f4dbb8d | 2009-09-01 02:12:33 +0200 | [diff] [blame] | 1703 | if (le->section_id == section_id) { |
| 1704 | break; |
| 1705 | } |
| 1706 | } |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 1707 | if (le == NULL) { |
| 1708 | fprintf(stderr, "Unknown savevm section %d\n", section_id); |
| 1709 | ret = -EINVAL; |
| 1710 | goto out; |
| 1711 | } |
| 1712 | |
Juan Quintela | 4082be4 | 2009-08-20 19:42:24 +0200 | [diff] [blame] | 1713 | ret = vmstate_load(f, le->se, le->version_id); |
Juan Quintela | b5a22e4 | 2009-08-20 19:42:23 +0200 | [diff] [blame] | 1714 | if (ret < 0) { |
| 1715 | fprintf(stderr, "qemu: warning: error while loading state section id %d\n", |
| 1716 | section_id); |
| 1717 | goto out; |
| 1718 | } |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 1719 | break; |
| 1720 | default: |
| 1721 | fprintf(stderr, "Unknown savevm section type %d\n", section_type); |
| 1722 | ret = -EINVAL; |
| 1723 | goto out; |
| 1724 | } |
| 1725 | } |
| 1726 | |
Jan Kiszka | ea375f9 | 2010-03-01 19:10:30 +0100 | [diff] [blame] | 1727 | cpu_synchronize_all_post_init(); |
| 1728 | |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 1729 | ret = 0; |
| 1730 | |
| 1731 | out: |
Blue Swirl | 72cf2d4 | 2009-09-12 07:36:22 +0000 | [diff] [blame] | 1732 | QLIST_FOREACH_SAFE(le, &loadvm_handlers, entry, new_le) { |
| 1733 | QLIST_REMOVE(le, entry); |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 1734 | qemu_free(le); |
| 1735 | } |
| 1736 | |
| 1737 | if (qemu_file_has_error(f)) |
| 1738 | ret = -EIO; |
| 1739 | |
| 1740 | return ret; |
| 1741 | } |
| 1742 | |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 1743 | static int bdrv_snapshot_find(BlockDriverState *bs, QEMUSnapshotInfo *sn_info, |
| 1744 | const char *name) |
| 1745 | { |
| 1746 | QEMUSnapshotInfo *sn_tab, *sn; |
| 1747 | int nb_sns, i, ret; |
| 1748 | |
| 1749 | ret = -ENOENT; |
| 1750 | nb_sns = bdrv_snapshot_list(bs, &sn_tab); |
| 1751 | if (nb_sns < 0) |
| 1752 | return ret; |
| 1753 | for(i = 0; i < nb_sns; i++) { |
| 1754 | sn = &sn_tab[i]; |
| 1755 | if (!strcmp(sn->id_str, name) || !strcmp(sn->name, name)) { |
| 1756 | *sn_info = *sn; |
| 1757 | ret = 0; |
| 1758 | break; |
| 1759 | } |
| 1760 | } |
| 1761 | qemu_free(sn_tab); |
| 1762 | return ret; |
| 1763 | } |
| 1764 | |
Kevin Wolf | cb499fb | 2009-11-03 17:34:37 +0100 | [diff] [blame] | 1765 | /* |
| 1766 | * Deletes snapshots of a given name in all opened images. |
| 1767 | */ |
| 1768 | static int del_existing_snapshots(Monitor *mon, const char *name) |
| 1769 | { |
| 1770 | BlockDriverState *bs; |
Kevin Wolf | cb499fb | 2009-11-03 17:34:37 +0100 | [diff] [blame] | 1771 | QEMUSnapshotInfo sn1, *snapshot = &sn1; |
| 1772 | int ret; |
| 1773 | |
Markus Armbruster | dbc1359 | 2010-06-02 18:55:21 +0200 | [diff] [blame] | 1774 | bs = NULL; |
| 1775 | while ((bs = bdrv_next(bs))) { |
Kevin Wolf | cb499fb | 2009-11-03 17:34:37 +0100 | [diff] [blame] | 1776 | if (bdrv_can_snapshot(bs) && |
| 1777 | bdrv_snapshot_find(bs, snapshot, name) >= 0) |
| 1778 | { |
| 1779 | ret = bdrv_snapshot_delete(bs, name); |
| 1780 | if (ret < 0) { |
| 1781 | monitor_printf(mon, |
| 1782 | "Error while deleting snapshot on '%s'\n", |
| 1783 | bdrv_get_device_name(bs)); |
| 1784 | return -1; |
| 1785 | } |
| 1786 | } |
| 1787 | } |
| 1788 | |
| 1789 | return 0; |
| 1790 | } |
| 1791 | |
Luiz Capitulino | d54908a | 2009-08-28 15:27:13 -0300 | [diff] [blame] | 1792 | void do_savevm(Monitor *mon, const QDict *qdict) |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 1793 | { |
| 1794 | BlockDriverState *bs, *bs1; |
| 1795 | QEMUSnapshotInfo sn1, *sn = &sn1, old_sn1, *old_sn = &old_sn1; |
Kevin Wolf | cb499fb | 2009-11-03 17:34:37 +0100 | [diff] [blame] | 1796 | int ret; |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 1797 | QEMUFile *f; |
| 1798 | int saved_vm_running; |
aliguori | 2d22b18 | 2008-12-11 21:06:49 +0000 | [diff] [blame] | 1799 | uint32_t vm_state_size; |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 1800 | #ifdef _WIN32 |
| 1801 | struct _timeb tb; |
| 1802 | #else |
| 1803 | struct timeval tv; |
| 1804 | #endif |
Luiz Capitulino | d54908a | 2009-08-28 15:27:13 -0300 | [diff] [blame] | 1805 | const char *name = qdict_get_try_str(qdict, "name"); |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 1806 | |
Miguel Di Ciurcio Filho | feeee5a | 2010-06-08 10:40:55 -0300 | [diff] [blame] | 1807 | /* Verify if there is a device that doesn't support snapshots and is writable */ |
Markus Armbruster | dbc1359 | 2010-06-02 18:55:21 +0200 | [diff] [blame] | 1808 | bs = NULL; |
| 1809 | while ((bs = bdrv_next(bs))) { |
Miguel Di Ciurcio Filho | feeee5a | 2010-06-08 10:40:55 -0300 | [diff] [blame] | 1810 | |
| 1811 | if (bdrv_is_removable(bs) || bdrv_is_read_only(bs)) { |
| 1812 | continue; |
| 1813 | } |
| 1814 | |
| 1815 | if (!bdrv_can_snapshot(bs)) { |
| 1816 | monitor_printf(mon, "Device '%s' is writable but does not support snapshots.\n", |
| 1817 | bdrv_get_device_name(bs)); |
| 1818 | return; |
| 1819 | } |
| 1820 | } |
| 1821 | |
Markus Armbruster | f9092b1 | 2010-06-25 10:33:39 +0200 | [diff] [blame] | 1822 | bs = bdrv_snapshots(); |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 1823 | if (!bs) { |
aliguori | 376253e | 2009-03-05 23:01:23 +0000 | [diff] [blame] | 1824 | monitor_printf(mon, "No block device can accept snapshots\n"); |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 1825 | return; |
| 1826 | } |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 1827 | /* ??? Should this occur after vm_stop? */ |
| 1828 | qemu_aio_flush(); |
| 1829 | |
| 1830 | saved_vm_running = vm_running; |
| 1831 | vm_stop(0); |
| 1832 | |
Kevin Wolf | cb499fb | 2009-11-03 17:34:37 +0100 | [diff] [blame] | 1833 | memset(sn, 0, sizeof(*sn)); |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 1834 | if (name) { |
| 1835 | ret = bdrv_snapshot_find(bs, old_sn, name); |
| 1836 | if (ret >= 0) { |
Kevin Wolf | cb499fb | 2009-11-03 17:34:37 +0100 | [diff] [blame] | 1837 | pstrcpy(sn->name, sizeof(sn->name), old_sn->name); |
| 1838 | pstrcpy(sn->id_str, sizeof(sn->id_str), old_sn->id_str); |
| 1839 | } else { |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 1840 | pstrcpy(sn->name, sizeof(sn->name), name); |
Kevin Wolf | cb499fb | 2009-11-03 17:34:37 +0100 | [diff] [blame] | 1841 | } |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 1842 | } |
| 1843 | |
| 1844 | /* fill auxiliary fields */ |
| 1845 | #ifdef _WIN32 |
| 1846 | _ftime(&tb); |
| 1847 | sn->date_sec = tb.time; |
| 1848 | sn->date_nsec = tb.millitm * 1000000; |
| 1849 | #else |
| 1850 | gettimeofday(&tv, NULL); |
| 1851 | sn->date_sec = tv.tv_sec; |
| 1852 | sn->date_nsec = tv.tv_usec * 1000; |
| 1853 | #endif |
| 1854 | sn->vm_clock_nsec = qemu_get_clock(vm_clock); |
| 1855 | |
Kevin Wolf | cb499fb | 2009-11-03 17:34:37 +0100 | [diff] [blame] | 1856 | /* Delete old snapshots of the same name */ |
Marcelo Tosatti | f139a41 | 2010-01-20 14:26:34 -0200 | [diff] [blame] | 1857 | if (name && del_existing_snapshots(mon, name) < 0) { |
Kevin Wolf | cb499fb | 2009-11-03 17:34:37 +0100 | [diff] [blame] | 1858 | goto the_end; |
| 1859 | } |
| 1860 | |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 1861 | /* save the VM state */ |
Christoph Hellwig | 45566e9 | 2009-07-10 23:11:57 +0200 | [diff] [blame] | 1862 | f = qemu_fopen_bdrv(bs, 1); |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 1863 | if (!f) { |
aliguori | 376253e | 2009-03-05 23:01:23 +0000 | [diff] [blame] | 1864 | monitor_printf(mon, "Could not open VM state file\n"); |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 1865 | goto the_end; |
| 1866 | } |
Jan Kiszka | f327aa0 | 2009-11-30 18:21:21 +0100 | [diff] [blame] | 1867 | ret = qemu_savevm_state(mon, f); |
aliguori | 2d22b18 | 2008-12-11 21:06:49 +0000 | [diff] [blame] | 1868 | vm_state_size = qemu_ftell(f); |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 1869 | qemu_fclose(f); |
| 1870 | if (ret < 0) { |
aliguori | 376253e | 2009-03-05 23:01:23 +0000 | [diff] [blame] | 1871 | monitor_printf(mon, "Error %d while writing VM\n", ret); |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 1872 | goto the_end; |
| 1873 | } |
| 1874 | |
| 1875 | /* create the snapshots */ |
| 1876 | |
Markus Armbruster | dbc1359 | 2010-06-02 18:55:21 +0200 | [diff] [blame] | 1877 | bs1 = NULL; |
| 1878 | while ((bs1 = bdrv_next(bs1))) { |
Miguel Di Ciurcio Filho | feeee5a | 2010-06-08 10:40:55 -0300 | [diff] [blame] | 1879 | if (bdrv_can_snapshot(bs1)) { |
aliguori | 2d22b18 | 2008-12-11 21:06:49 +0000 | [diff] [blame] | 1880 | /* Write VM state size only to the image that contains the state */ |
| 1881 | sn->vm_state_size = (bs == bs1 ? vm_state_size : 0); |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 1882 | ret = bdrv_snapshot_create(bs1, sn); |
| 1883 | if (ret < 0) { |
aliguori | 376253e | 2009-03-05 23:01:23 +0000 | [diff] [blame] | 1884 | monitor_printf(mon, "Error while creating snapshot on '%s'\n", |
| 1885 | bdrv_get_device_name(bs1)); |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 1886 | } |
| 1887 | } |
| 1888 | } |
| 1889 | |
| 1890 | the_end: |
| 1891 | if (saved_vm_running) |
| 1892 | vm_start(); |
| 1893 | } |
| 1894 | |
Markus Armbruster | 03cd465 | 2010-02-17 16:24:10 +0100 | [diff] [blame] | 1895 | int load_vmstate(const char *name) |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 1896 | { |
| 1897 | BlockDriverState *bs, *bs1; |
aliguori | 2d22b18 | 2008-12-11 21:06:49 +0000 | [diff] [blame] | 1898 | QEMUSnapshotInfo sn; |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 1899 | QEMUFile *f; |
Gerd Hoffmann | 751c6a1 | 2009-07-22 16:42:57 +0200 | [diff] [blame] | 1900 | int ret; |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 1901 | |
Miguel Di Ciurcio Filho | feeee5a | 2010-06-08 10:40:55 -0300 | [diff] [blame] | 1902 | /* Verify if there is a device that doesn't support snapshots and is writable */ |
Markus Armbruster | dbc1359 | 2010-06-02 18:55:21 +0200 | [diff] [blame] | 1903 | bs = NULL; |
| 1904 | while ((bs = bdrv_next(bs))) { |
Miguel Di Ciurcio Filho | feeee5a | 2010-06-08 10:40:55 -0300 | [diff] [blame] | 1905 | |
| 1906 | if (bdrv_is_removable(bs) || bdrv_is_read_only(bs)) { |
| 1907 | continue; |
| 1908 | } |
| 1909 | |
| 1910 | if (!bdrv_can_snapshot(bs)) { |
| 1911 | error_report("Device '%s' is writable but does not support snapshots.", |
| 1912 | bdrv_get_device_name(bs)); |
| 1913 | return -ENOTSUP; |
| 1914 | } |
| 1915 | } |
| 1916 | |
Markus Armbruster | f9092b1 | 2010-06-25 10:33:39 +0200 | [diff] [blame] | 1917 | bs = bdrv_snapshots(); |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 1918 | if (!bs) { |
Markus Armbruster | 1ecda02 | 2010-02-18 17:25:24 +0100 | [diff] [blame] | 1919 | error_report("No block device supports snapshots"); |
Juan Quintela | 05f2401 | 2009-08-20 19:42:22 +0200 | [diff] [blame] | 1920 | return -EINVAL; |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 1921 | } |
| 1922 | |
| 1923 | /* Flush all IO requests so they don't interfere with the new state. */ |
| 1924 | qemu_aio_flush(); |
| 1925 | |
Markus Armbruster | dbc1359 | 2010-06-02 18:55:21 +0200 | [diff] [blame] | 1926 | bs1 = NULL; |
| 1927 | while ((bs1 = bdrv_next(bs1))) { |
Miguel Di Ciurcio Filho | feeee5a | 2010-06-08 10:40:55 -0300 | [diff] [blame] | 1928 | if (bdrv_can_snapshot(bs1)) { |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 1929 | ret = bdrv_snapshot_goto(bs1, name); |
| 1930 | if (ret < 0) { |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 1931 | switch(ret) { |
| 1932 | case -ENOTSUP: |
Markus Armbruster | 1ecda02 | 2010-02-18 17:25:24 +0100 | [diff] [blame] | 1933 | error_report("%sSnapshots not supported on device '%s'", |
| 1934 | bs != bs1 ? "Warning: " : "", |
| 1935 | bdrv_get_device_name(bs1)); |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 1936 | break; |
| 1937 | case -ENOENT: |
Markus Armbruster | 1ecda02 | 2010-02-18 17:25:24 +0100 | [diff] [blame] | 1938 | error_report("%sCould not find snapshot '%s' on device '%s'", |
| 1939 | bs != bs1 ? "Warning: " : "", |
| 1940 | name, bdrv_get_device_name(bs1)); |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 1941 | break; |
| 1942 | default: |
Markus Armbruster | 1ecda02 | 2010-02-18 17:25:24 +0100 | [diff] [blame] | 1943 | error_report("%sError %d while activating snapshot on '%s'", |
| 1944 | bs != bs1 ? "Warning: " : "", |
| 1945 | ret, bdrv_get_device_name(bs1)); |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 1946 | break; |
| 1947 | } |
| 1948 | /* fatal on snapshot block device */ |
| 1949 | if (bs == bs1) |
Juan Quintela | 05f2401 | 2009-08-20 19:42:22 +0200 | [diff] [blame] | 1950 | return 0; |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 1951 | } |
| 1952 | } |
| 1953 | } |
| 1954 | |
aliguori | 2d22b18 | 2008-12-11 21:06:49 +0000 | [diff] [blame] | 1955 | /* Don't even try to load empty VM states */ |
| 1956 | ret = bdrv_snapshot_find(bs, &sn, name); |
| 1957 | if ((ret >= 0) && (sn.vm_state_size == 0)) |
Juan Quintela | 05f2401 | 2009-08-20 19:42:22 +0200 | [diff] [blame] | 1958 | return -EINVAL; |
aliguori | 2d22b18 | 2008-12-11 21:06:49 +0000 | [diff] [blame] | 1959 | |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 1960 | /* restore the VM state */ |
Christoph Hellwig | 45566e9 | 2009-07-10 23:11:57 +0200 | [diff] [blame] | 1961 | f = qemu_fopen_bdrv(bs, 0); |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 1962 | if (!f) { |
Markus Armbruster | 1ecda02 | 2010-02-18 17:25:24 +0100 | [diff] [blame] | 1963 | error_report("Could not open VM state file"); |
Juan Quintela | 05f2401 | 2009-08-20 19:42:22 +0200 | [diff] [blame] | 1964 | return -EINVAL; |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 1965 | } |
| 1966 | ret = qemu_loadvm_state(f); |
| 1967 | qemu_fclose(f); |
| 1968 | if (ret < 0) { |
Markus Armbruster | 1ecda02 | 2010-02-18 17:25:24 +0100 | [diff] [blame] | 1969 | error_report("Error %d while loading VM state", ret); |
Juan Quintela | 05f2401 | 2009-08-20 19:42:22 +0200 | [diff] [blame] | 1970 | return ret; |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 1971 | } |
Juan Quintela | 05f2401 | 2009-08-20 19:42:22 +0200 | [diff] [blame] | 1972 | return 0; |
Juan Quintela | 7b63034 | 2009-08-20 19:42:20 +0200 | [diff] [blame] | 1973 | } |
| 1974 | |
Luiz Capitulino | d54908a | 2009-08-28 15:27:13 -0300 | [diff] [blame] | 1975 | void do_delvm(Monitor *mon, const QDict *qdict) |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 1976 | { |
| 1977 | BlockDriverState *bs, *bs1; |
Gerd Hoffmann | 751c6a1 | 2009-07-22 16:42:57 +0200 | [diff] [blame] | 1978 | int ret; |
Luiz Capitulino | d54908a | 2009-08-28 15:27:13 -0300 | [diff] [blame] | 1979 | const char *name = qdict_get_str(qdict, "name"); |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 1980 | |
Markus Armbruster | f9092b1 | 2010-06-25 10:33:39 +0200 | [diff] [blame] | 1981 | bs = bdrv_snapshots(); |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 1982 | if (!bs) { |
aliguori | 376253e | 2009-03-05 23:01:23 +0000 | [diff] [blame] | 1983 | monitor_printf(mon, "No block device supports snapshots\n"); |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 1984 | return; |
| 1985 | } |
| 1986 | |
Markus Armbruster | dbc1359 | 2010-06-02 18:55:21 +0200 | [diff] [blame] | 1987 | bs1 = NULL; |
| 1988 | while ((bs1 = bdrv_next(bs1))) { |
Miguel Di Ciurcio Filho | feeee5a | 2010-06-08 10:40:55 -0300 | [diff] [blame] | 1989 | if (bdrv_can_snapshot(bs1)) { |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 1990 | ret = bdrv_snapshot_delete(bs1, name); |
| 1991 | if (ret < 0) { |
| 1992 | if (ret == -ENOTSUP) |
aliguori | 376253e | 2009-03-05 23:01:23 +0000 | [diff] [blame] | 1993 | monitor_printf(mon, |
| 1994 | "Snapshots not supported on device '%s'\n", |
| 1995 | bdrv_get_device_name(bs1)); |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 1996 | else |
aliguori | 376253e | 2009-03-05 23:01:23 +0000 | [diff] [blame] | 1997 | monitor_printf(mon, "Error %d while deleting snapshot on " |
| 1998 | "'%s'\n", ret, bdrv_get_device_name(bs1)); |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 1999 | } |
| 2000 | } |
| 2001 | } |
| 2002 | } |
| 2003 | |
aliguori | 376253e | 2009-03-05 23:01:23 +0000 | [diff] [blame] | 2004 | void do_info_snapshots(Monitor *mon) |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 2005 | { |
| 2006 | BlockDriverState *bs, *bs1; |
| 2007 | QEMUSnapshotInfo *sn_tab, *sn; |
| 2008 | int nb_sns, i; |
| 2009 | char buf[256]; |
| 2010 | |
Markus Armbruster | f9092b1 | 2010-06-25 10:33:39 +0200 | [diff] [blame] | 2011 | bs = bdrv_snapshots(); |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 2012 | if (!bs) { |
aliguori | 376253e | 2009-03-05 23:01:23 +0000 | [diff] [blame] | 2013 | monitor_printf(mon, "No available block device supports snapshots\n"); |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 2014 | return; |
| 2015 | } |
aliguori | 376253e | 2009-03-05 23:01:23 +0000 | [diff] [blame] | 2016 | monitor_printf(mon, "Snapshot devices:"); |
Markus Armbruster | dbc1359 | 2010-06-02 18:55:21 +0200 | [diff] [blame] | 2017 | bs1 = NULL; |
| 2018 | while ((bs1 = bdrv_next(bs1))) { |
Miguel Di Ciurcio Filho | feeee5a | 2010-06-08 10:40:55 -0300 | [diff] [blame] | 2019 | if (bdrv_can_snapshot(bs1)) { |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 2020 | if (bs == bs1) |
aliguori | 376253e | 2009-03-05 23:01:23 +0000 | [diff] [blame] | 2021 | monitor_printf(mon, " %s", bdrv_get_device_name(bs1)); |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 2022 | } |
| 2023 | } |
aliguori | 376253e | 2009-03-05 23:01:23 +0000 | [diff] [blame] | 2024 | monitor_printf(mon, "\n"); |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 2025 | |
| 2026 | nb_sns = bdrv_snapshot_list(bs, &sn_tab); |
| 2027 | if (nb_sns < 0) { |
aliguori | 376253e | 2009-03-05 23:01:23 +0000 | [diff] [blame] | 2028 | monitor_printf(mon, "bdrv_snapshot_list: error %d\n", nb_sns); |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 2029 | return; |
| 2030 | } |
aliguori | 376253e | 2009-03-05 23:01:23 +0000 | [diff] [blame] | 2031 | monitor_printf(mon, "Snapshot list (from %s):\n", |
| 2032 | bdrv_get_device_name(bs)); |
| 2033 | monitor_printf(mon, "%s\n", bdrv_snapshot_dump(buf, sizeof(buf), NULL)); |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 2034 | for(i = 0; i < nb_sns; i++) { |
| 2035 | sn = &sn_tab[i]; |
aliguori | 376253e | 2009-03-05 23:01:23 +0000 | [diff] [blame] | 2036 | monitor_printf(mon, "%s\n", bdrv_snapshot_dump(buf, sizeof(buf), sn)); |
aliguori | a672b46 | 2008-11-11 21:33:36 +0000 | [diff] [blame] | 2037 | } |
| 2038 | qemu_free(sn_tab); |
| 2039 | } |