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1 | a672b469 | aliguori | /*
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2 | a672b469 | aliguori | * QEMU System Emulator
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3 | a672b469 | aliguori | *
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4 | a672b469 | aliguori | * Copyright (c) 2003-2008 Fabrice Bellard
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5 | a672b469 | aliguori | *
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6 | a672b469 | aliguori | * Permission is hereby granted, free of charge, to any person obtaining a copy
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7 | a672b469 | aliguori | * of this software and associated documentation files (the "Software"), to deal
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8 | a672b469 | aliguori | * in the Software without restriction, including without limitation the rights
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9 | a672b469 | aliguori | * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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10 | a672b469 | aliguori | * copies of the Software, and to permit persons to whom the Software is
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11 | a672b469 | aliguori | * furnished to do so, subject to the following conditions:
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12 | a672b469 | aliguori | *
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13 | a672b469 | aliguori | * The above copyright notice and this permission notice shall be included in
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14 | a672b469 | aliguori | * all copies or substantial portions of the Software.
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15 | a672b469 | aliguori | *
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16 | a672b469 | aliguori | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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17 | a672b469 | aliguori | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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18 | a672b469 | aliguori | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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19 | a672b469 | aliguori | * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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20 | a672b469 | aliguori | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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21 | a672b469 | aliguori | * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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22 | a672b469 | aliguori | * THE SOFTWARE.
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23 | a672b469 | aliguori | */
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24 | a672b469 | aliguori | #include <unistd.h> |
25 | a672b469 | aliguori | #include <fcntl.h> |
26 | a672b469 | aliguori | #include <signal.h> |
27 | a672b469 | aliguori | #include <time.h> |
28 | a672b469 | aliguori | #include <errno.h> |
29 | a672b469 | aliguori | #include <sys/time.h> |
30 | a672b469 | aliguori | #include <zlib.h> |
31 | a672b469 | aliguori | |
32 | 71e72a19 | Juan Quintela | /* Needed early for CONFIG_BSD etc. */
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33 | d40cdb10 | blueswir1 | #include "config-host.h" |
34 | d40cdb10 | blueswir1 | |
35 | a672b469 | aliguori | #ifndef _WIN32
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36 | a672b469 | aliguori | #include <sys/times.h> |
37 | a672b469 | aliguori | #include <sys/wait.h> |
38 | a672b469 | aliguori | #include <termios.h> |
39 | a672b469 | aliguori | #include <sys/mman.h> |
40 | a672b469 | aliguori | #include <sys/ioctl.h> |
41 | a672b469 | aliguori | #include <sys/resource.h> |
42 | a672b469 | aliguori | #include <sys/socket.h> |
43 | a672b469 | aliguori | #include <netinet/in.h> |
44 | a672b469 | aliguori | #include <net/if.h> |
45 | a672b469 | aliguori | #include <arpa/inet.h> |
46 | a672b469 | aliguori | #include <dirent.h> |
47 | a672b469 | aliguori | #include <netdb.h> |
48 | a672b469 | aliguori | #include <sys/select.h> |
49 | 71e72a19 | Juan Quintela | #ifdef CONFIG_BSD
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50 | a672b469 | aliguori | #include <sys/stat.h> |
51 | a167ba50 | Aurelien Jarno | #if defined(__FreeBSD__) || defined(__FreeBSD_kernel__) || defined(__DragonFly__)
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52 | a672b469 | aliguori | #include <libutil.h> |
53 | a672b469 | aliguori | #else
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54 | a672b469 | aliguori | #include <util.h> |
55 | a672b469 | aliguori | #endif
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56 | a672b469 | aliguori | #ifdef __linux__
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57 | a672b469 | aliguori | #include <pty.h> |
58 | a672b469 | aliguori | #include <malloc.h> |
59 | a672b469 | aliguori | #include <linux/rtc.h> |
60 | a672b469 | aliguori | #endif
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61 | a672b469 | aliguori | #endif
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62 | a672b469 | aliguori | #endif
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63 | a672b469 | aliguori | |
64 | a672b469 | aliguori | #ifdef _WIN32
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65 | 49dc768d | aliguori | #include <windows.h> |
66 | a672b469 | aliguori | #include <malloc.h> |
67 | a672b469 | aliguori | #include <sys/timeb.h> |
68 | a672b469 | aliguori | #include <mmsystem.h> |
69 | a672b469 | aliguori | #define getopt_long_only getopt_long
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70 | a672b469 | aliguori | #define memalign(align, size) malloc(size)
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71 | a672b469 | aliguori | #endif
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72 | a672b469 | aliguori | |
73 | 511d2b14 | blueswir1 | #include "qemu-common.h" |
74 | 511d2b14 | blueswir1 | #include "hw/hw.h" |
75 | 511d2b14 | blueswir1 | #include "net.h" |
76 | 511d2b14 | blueswir1 | #include "monitor.h" |
77 | 511d2b14 | blueswir1 | #include "sysemu.h" |
78 | 511d2b14 | blueswir1 | #include "qemu-timer.h" |
79 | 511d2b14 | blueswir1 | #include "qemu-char.h" |
80 | 511d2b14 | blueswir1 | #include "block.h" |
81 | 511d2b14 | blueswir1 | #include "audio/audio.h" |
82 | 511d2b14 | blueswir1 | #include "migration.h" |
83 | 511d2b14 | blueswir1 | #include "qemu_socket.h" |
84 | 72cf2d4f | Blue Swirl | #include "qemu-queue.h" |
85 | 511d2b14 | blueswir1 | |
86 | a672b469 | aliguori | /* point to the block driver where the snapshots are managed */
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87 | a672b469 | aliguori | static BlockDriverState *bs_snapshots;
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88 | a672b469 | aliguori | |
89 | a672b469 | aliguori | #define SELF_ANNOUNCE_ROUNDS 5 |
90 | a672b469 | aliguori | |
91 | 18995b98 | Nolan | #ifndef ETH_P_RARP
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92 | f8778a77 | Stefan Berger | #define ETH_P_RARP 0x8035 |
93 | 18995b98 | Nolan | #endif
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94 | 18995b98 | Nolan | #define ARP_HTYPE_ETH 0x0001 |
95 | 18995b98 | Nolan | #define ARP_PTYPE_IP 0x0800 |
96 | 18995b98 | Nolan | #define ARP_OP_REQUEST_REV 0x3 |
97 | 18995b98 | Nolan | |
98 | 18995b98 | Nolan | static int announce_self_create(uint8_t *buf, |
99 | a672b469 | aliguori | uint8_t *mac_addr) |
100 | a672b469 | aliguori | { |
101 | 18995b98 | Nolan | /* Ethernet header. */
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102 | 18995b98 | Nolan | memset(buf, 0xff, 6); /* destination MAC addr */ |
103 | 18995b98 | Nolan | memcpy(buf + 6, mac_addr, 6); /* source MAC addr */ |
104 | 18995b98 | Nolan | *(uint16_t *)(buf + 12) = htons(ETH_P_RARP); /* ethertype */ |
105 | 18995b98 | Nolan | |
106 | 18995b98 | Nolan | /* RARP header. */
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107 | 18995b98 | Nolan | *(uint16_t *)(buf + 14) = htons(ARP_HTYPE_ETH); /* hardware addr space */ |
108 | 18995b98 | Nolan | *(uint16_t *)(buf + 16) = htons(ARP_PTYPE_IP); /* protocol addr space */ |
109 | 18995b98 | Nolan | *(buf + 18) = 6; /* hardware addr length (ethernet) */ |
110 | 18995b98 | Nolan | *(buf + 19) = 4; /* protocol addr length (IPv4) */ |
111 | 18995b98 | Nolan | *(uint16_t *)(buf + 20) = htons(ARP_OP_REQUEST_REV); /* opcode */ |
112 | 18995b98 | Nolan | memcpy(buf + 22, mac_addr, 6); /* source hw addr */ |
113 | 18995b98 | Nolan | memset(buf + 28, 0x00, 4); /* source protocol addr */ |
114 | 18995b98 | Nolan | memcpy(buf + 32, mac_addr, 6); /* target hw addr */ |
115 | 18995b98 | Nolan | memset(buf + 38, 0x00, 4); /* target protocol addr */ |
116 | 18995b98 | Nolan | |
117 | 18995b98 | Nolan | /* Padding to get up to 60 bytes (ethernet min packet size, minus FCS). */
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118 | 18995b98 | Nolan | memset(buf + 42, 0x00, 18); |
119 | 18995b98 | Nolan | |
120 | 18995b98 | Nolan | return 60; /* len (FCS will be added by hardware) */ |
121 | a672b469 | aliguori | } |
122 | a672b469 | aliguori | |
123 | f401ca22 | Mark McLoughlin | static void qemu_announce_self_iter(NICState *nic, void *opaque) |
124 | a672b469 | aliguori | { |
125 | 18995b98 | Nolan | uint8_t buf[60];
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126 | f401ca22 | Mark McLoughlin | int len;
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127 | f401ca22 | Mark McLoughlin | |
128 | f401ca22 | Mark McLoughlin | len = announce_self_create(buf, nic->conf->macaddr.a); |
129 | f401ca22 | Mark McLoughlin | |
130 | f401ca22 | Mark McLoughlin | qemu_send_packet_raw(&nic->nc, buf, len); |
131 | f401ca22 | Mark McLoughlin | } |
132 | f401ca22 | Mark McLoughlin | |
133 | f401ca22 | Mark McLoughlin | |
134 | f401ca22 | Mark McLoughlin | static void qemu_announce_self_once(void *opaque) |
135 | f401ca22 | Mark McLoughlin | { |
136 | ed8b330b | Gleb Natapov | static int count = SELF_ANNOUNCE_ROUNDS; |
137 | ed8b330b | Gleb Natapov | QEMUTimer *timer = *(QEMUTimer **)opaque; |
138 | a672b469 | aliguori | |
139 | f401ca22 | Mark McLoughlin | qemu_foreach_nic(qemu_announce_self_iter, NULL);
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140 | f401ca22 | Mark McLoughlin | |
141 | 18995b98 | Nolan | if (--count) {
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142 | 18995b98 | Nolan | /* delay 50ms, 150ms, 250ms, ... */
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143 | 18995b98 | Nolan | qemu_mod_timer(timer, qemu_get_clock(rt_clock) + |
144 | 18995b98 | Nolan | 50 + (SELF_ANNOUNCE_ROUNDS - count - 1) * 100); |
145 | ed8b330b | Gleb Natapov | } else {
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146 | ed8b330b | Gleb Natapov | qemu_del_timer(timer); |
147 | ed8b330b | Gleb Natapov | qemu_free_timer(timer); |
148 | ed8b330b | Gleb Natapov | } |
149 | ed8b330b | Gleb Natapov | } |
150 | ed8b330b | Gleb Natapov | |
151 | ed8b330b | Gleb Natapov | void qemu_announce_self(void) |
152 | ed8b330b | Gleb Natapov | { |
153 | ed8b330b | Gleb Natapov | static QEMUTimer *timer;
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154 | ed8b330b | Gleb Natapov | timer = qemu_new_timer(rt_clock, qemu_announce_self_once, &timer); |
155 | ed8b330b | Gleb Natapov | qemu_announce_self_once(&timer); |
156 | a672b469 | aliguori | } |
157 | a672b469 | aliguori | |
158 | a672b469 | aliguori | /***********************************************************/
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159 | a672b469 | aliguori | /* savevm/loadvm support */
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160 | a672b469 | aliguori | |
161 | a672b469 | aliguori | #define IO_BUF_SIZE 32768 |
162 | a672b469 | aliguori | |
163 | a672b469 | aliguori | struct QEMUFile {
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164 | a672b469 | aliguori | QEMUFilePutBufferFunc *put_buffer; |
165 | a672b469 | aliguori | QEMUFileGetBufferFunc *get_buffer; |
166 | a672b469 | aliguori | QEMUFileCloseFunc *close; |
167 | a672b469 | aliguori | QEMUFileRateLimit *rate_limit; |
168 | 19629537 | Glauber Costa | QEMUFileSetRateLimit *set_rate_limit; |
169 | c163b5ca | lirans@il.ibm.com | QEMUFileGetRateLimit *get_rate_limit; |
170 | a672b469 | aliguori | void *opaque;
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171 | a672b469 | aliguori | int is_write;
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172 | a672b469 | aliguori | |
173 | a672b469 | aliguori | int64_t buf_offset; /* start of buffer when writing, end of buffer
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174 | a672b469 | aliguori | when reading */
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175 | a672b469 | aliguori | int buf_index;
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176 | a672b469 | aliguori | int buf_size; /* 0 when writing */ |
177 | a672b469 | aliguori | uint8_t buf[IO_BUF_SIZE]; |
178 | a672b469 | aliguori | |
179 | a672b469 | aliguori | int has_error;
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180 | a672b469 | aliguori | }; |
181 | a672b469 | aliguori | |
182 | 7f79dd28 | Paolo Bonzini | typedef struct QEMUFileStdio |
183 | a672b469 | aliguori | { |
184 | 7f79dd28 | Paolo Bonzini | FILE *stdio_file; |
185 | a672b469 | aliguori | QEMUFile *file; |
186 | 7f79dd28 | Paolo Bonzini | } QEMUFileStdio; |
187 | a672b469 | aliguori | |
188 | a672b469 | aliguori | typedef struct QEMUFileSocket |
189 | a672b469 | aliguori | { |
190 | a672b469 | aliguori | int fd;
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191 | a672b469 | aliguori | QEMUFile *file; |
192 | a672b469 | aliguori | } QEMUFileSocket; |
193 | a672b469 | aliguori | |
194 | a672b469 | aliguori | static int socket_get_buffer(void *opaque, uint8_t *buf, int64_t pos, int size) |
195 | a672b469 | aliguori | { |
196 | a672b469 | aliguori | QEMUFileSocket *s = opaque; |
197 | a672b469 | aliguori | ssize_t len; |
198 | a672b469 | aliguori | |
199 | a672b469 | aliguori | do {
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200 | c5b76b38 | Blue Swirl | len = recv(s->fd, (void *)buf, size, 0); |
201 | a672b469 | aliguori | } while (len == -1 && socket_error() == EINTR); |
202 | a672b469 | aliguori | |
203 | a672b469 | aliguori | if (len == -1) |
204 | a672b469 | aliguori | len = -socket_error(); |
205 | a672b469 | aliguori | |
206 | a672b469 | aliguori | return len;
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207 | a672b469 | aliguori | } |
208 | a672b469 | aliguori | |
209 | a672b469 | aliguori | static int socket_close(void *opaque) |
210 | a672b469 | aliguori | { |
211 | a672b469 | aliguori | QEMUFileSocket *s = opaque; |
212 | a672b469 | aliguori | qemu_free(s); |
213 | a672b469 | aliguori | return 0; |
214 | a672b469 | aliguori | } |
215 | a672b469 | aliguori | |
216 | 7f79dd28 | Paolo Bonzini | static int stdio_put_buffer(void *opaque, const uint8_t *buf, int64_t pos, int size) |
217 | a672b469 | aliguori | { |
218 | 7f79dd28 | Paolo Bonzini | QEMUFileStdio *s = opaque; |
219 | 7f79dd28 | Paolo Bonzini | return fwrite(buf, 1, size, s->stdio_file); |
220 | a672b469 | aliguori | } |
221 | a672b469 | aliguori | |
222 | 7f79dd28 | Paolo Bonzini | static int stdio_get_buffer(void *opaque, uint8_t *buf, int64_t pos, int size) |
223 | a672b469 | aliguori | { |
224 | 7f79dd28 | Paolo Bonzini | QEMUFileStdio *s = opaque; |
225 | 7f79dd28 | Paolo Bonzini | FILE *fp = s->stdio_file; |
226 | 8a67ec4d | Uri Lublin | int bytes;
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227 | 8a67ec4d | Uri Lublin | |
228 | 8a67ec4d | Uri Lublin | do {
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229 | 8a67ec4d | Uri Lublin | clearerr(fp); |
230 | 8a67ec4d | Uri Lublin | bytes = fread(buf, 1, size, fp);
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231 | 8a67ec4d | Uri Lublin | } while ((bytes == 0) && ferror(fp) && (errno == EINTR)); |
232 | 8a67ec4d | Uri Lublin | return bytes;
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233 | a672b469 | aliguori | } |
234 | a672b469 | aliguori | |
235 | 7f79dd28 | Paolo Bonzini | static int stdio_pclose(void *opaque) |
236 | 7f79dd28 | Paolo Bonzini | { |
237 | 7f79dd28 | Paolo Bonzini | QEMUFileStdio *s = opaque; |
238 | 7f79dd28 | Paolo Bonzini | pclose(s->stdio_file); |
239 | 7f79dd28 | Paolo Bonzini | qemu_free(s); |
240 | 7f79dd28 | Paolo Bonzini | return 0; |
241 | 7f79dd28 | Paolo Bonzini | } |
242 | 7f79dd28 | Paolo Bonzini | |
243 | 7f79dd28 | Paolo Bonzini | static int stdio_fclose(void *opaque) |
244 | a672b469 | aliguori | { |
245 | 7f79dd28 | Paolo Bonzini | QEMUFileStdio *s = opaque; |
246 | 7f79dd28 | Paolo Bonzini | fclose(s->stdio_file); |
247 | a672b469 | aliguori | qemu_free(s); |
248 | a672b469 | aliguori | return 0; |
249 | a672b469 | aliguori | } |
250 | a672b469 | aliguori | |
251 | 7f79dd28 | Paolo Bonzini | QEMUFile *qemu_popen(FILE *stdio_file, const char *mode) |
252 | a672b469 | aliguori | { |
253 | 7f79dd28 | Paolo Bonzini | QEMUFileStdio *s; |
254 | a672b469 | aliguori | |
255 | 7f79dd28 | Paolo Bonzini | if (stdio_file == NULL || mode == NULL || (mode[0] != 'r' && mode[0] != 'w') || mode[1] != 0) { |
256 | a672b469 | aliguori | fprintf(stderr, "qemu_popen: Argument validity check failed\n");
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257 | a672b469 | aliguori | return NULL; |
258 | a672b469 | aliguori | } |
259 | a672b469 | aliguori | |
260 | 7f79dd28 | Paolo Bonzini | s = qemu_mallocz(sizeof(QEMUFileStdio));
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261 | a672b469 | aliguori | |
262 | 7f79dd28 | Paolo Bonzini | s->stdio_file = stdio_file; |
263 | a672b469 | aliguori | |
264 | a672b469 | aliguori | if(mode[0] == 'r') { |
265 | c163b5ca | lirans@il.ibm.com | s->file = qemu_fopen_ops(s, NULL, stdio_get_buffer, stdio_pclose,
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266 | c163b5ca | lirans@il.ibm.com | NULL, NULL, NULL); |
267 | a672b469 | aliguori | } else {
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268 | c163b5ca | lirans@il.ibm.com | s->file = qemu_fopen_ops(s, stdio_put_buffer, NULL, stdio_pclose,
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269 | c163b5ca | lirans@il.ibm.com | NULL, NULL, NULL); |
270 | a672b469 | aliguori | } |
271 | a672b469 | aliguori | return s->file;
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272 | a672b469 | aliguori | } |
273 | a672b469 | aliguori | |
274 | a672b469 | aliguori | QEMUFile *qemu_popen_cmd(const char *command, const char *mode) |
275 | a672b469 | aliguori | { |
276 | a672b469 | aliguori | FILE *popen_file; |
277 | a672b469 | aliguori | |
278 | a672b469 | aliguori | popen_file = popen(command, mode); |
279 | a672b469 | aliguori | if(popen_file == NULL) { |
280 | a672b469 | aliguori | return NULL; |
281 | a672b469 | aliguori | } |
282 | a672b469 | aliguori | |
283 | a672b469 | aliguori | return qemu_popen(popen_file, mode);
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284 | a672b469 | aliguori | } |
285 | a672b469 | aliguori | |
286 | 7f79dd28 | Paolo Bonzini | int qemu_stdio_fd(QEMUFile *f)
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287 | 8a43b1ea | Chris Lalancette | { |
288 | 7f79dd28 | Paolo Bonzini | QEMUFileStdio *p; |
289 | 8a43b1ea | Chris Lalancette | int fd;
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290 | 8a43b1ea | Chris Lalancette | |
291 | 7f79dd28 | Paolo Bonzini | p = (QEMUFileStdio *)f->opaque; |
292 | 7f79dd28 | Paolo Bonzini | fd = fileno(p->stdio_file); |
293 | 8a43b1ea | Chris Lalancette | |
294 | 8a43b1ea | Chris Lalancette | return fd;
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295 | 8a43b1ea | Chris Lalancette | } |
296 | 8a43b1ea | Chris Lalancette | |
297 | 5ac1fad3 | Paolo Bonzini | QEMUFile *qemu_fdopen(int fd, const char *mode) |
298 | 5ac1fad3 | Paolo Bonzini | { |
299 | 5ac1fad3 | Paolo Bonzini | QEMUFileStdio *s; |
300 | 5ac1fad3 | Paolo Bonzini | |
301 | 5ac1fad3 | Paolo Bonzini | if (mode == NULL || |
302 | 5ac1fad3 | Paolo Bonzini | (mode[0] != 'r' && mode[0] != 'w') || |
303 | 5ac1fad3 | Paolo Bonzini | mode[1] != 'b' || mode[2] != 0) { |
304 | 5ac1fad3 | Paolo Bonzini | fprintf(stderr, "qemu_fdopen: Argument validity check failed\n");
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305 | 5ac1fad3 | Paolo Bonzini | return NULL; |
306 | 5ac1fad3 | Paolo Bonzini | } |
307 | 5ac1fad3 | Paolo Bonzini | |
308 | 5ac1fad3 | Paolo Bonzini | s = qemu_mallocz(sizeof(QEMUFileStdio));
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309 | 5ac1fad3 | Paolo Bonzini | s->stdio_file = fdopen(fd, mode); |
310 | 5ac1fad3 | Paolo Bonzini | if (!s->stdio_file)
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311 | 5ac1fad3 | Paolo Bonzini | goto fail;
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312 | 5ac1fad3 | Paolo Bonzini | |
313 | 5ac1fad3 | Paolo Bonzini | if(mode[0] == 'r') { |
314 | c163b5ca | lirans@il.ibm.com | s->file = qemu_fopen_ops(s, NULL, stdio_get_buffer, stdio_fclose,
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315 | c163b5ca | lirans@il.ibm.com | NULL, NULL, NULL); |
316 | 5ac1fad3 | Paolo Bonzini | } else {
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317 | c163b5ca | lirans@il.ibm.com | s->file = qemu_fopen_ops(s, stdio_put_buffer, NULL, stdio_fclose,
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318 | c163b5ca | lirans@il.ibm.com | NULL, NULL, NULL); |
319 | 5ac1fad3 | Paolo Bonzini | } |
320 | 5ac1fad3 | Paolo Bonzini | return s->file;
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321 | 5ac1fad3 | Paolo Bonzini | |
322 | 5ac1fad3 | Paolo Bonzini | fail:
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323 | 5ac1fad3 | Paolo Bonzini | qemu_free(s); |
324 | 5ac1fad3 | Paolo Bonzini | return NULL; |
325 | 5ac1fad3 | Paolo Bonzini | } |
326 | 5ac1fad3 | Paolo Bonzini | |
327 | a672b469 | aliguori | QEMUFile *qemu_fopen_socket(int fd)
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328 | a672b469 | aliguori | { |
329 | a672b469 | aliguori | QEMUFileSocket *s = qemu_mallocz(sizeof(QEMUFileSocket));
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330 | a672b469 | aliguori | |
331 | a672b469 | aliguori | s->fd = fd; |
332 | c163b5ca | lirans@il.ibm.com | s->file = qemu_fopen_ops(s, NULL, socket_get_buffer, socket_close,
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333 | c163b5ca | lirans@il.ibm.com | NULL, NULL, NULL); |
334 | a672b469 | aliguori | return s->file;
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335 | a672b469 | aliguori | } |
336 | a672b469 | aliguori | |
337 | a672b469 | aliguori | static int file_put_buffer(void *opaque, const uint8_t *buf, |
338 | a672b469 | aliguori | int64_t pos, int size)
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339 | a672b469 | aliguori | { |
340 | a672b469 | aliguori | QEMUFileStdio *s = opaque; |
341 | 7f79dd28 | Paolo Bonzini | fseek(s->stdio_file, pos, SEEK_SET); |
342 | 5fdb3aa1 | Kirill A. Shutemov | return fwrite(buf, 1, size, s->stdio_file); |
343 | a672b469 | aliguori | } |
344 | a672b469 | aliguori | |
345 | a672b469 | aliguori | static int file_get_buffer(void *opaque, uint8_t *buf, int64_t pos, int size) |
346 | a672b469 | aliguori | { |
347 | a672b469 | aliguori | QEMUFileStdio *s = opaque; |
348 | 7f79dd28 | Paolo Bonzini | fseek(s->stdio_file, pos, SEEK_SET); |
349 | 7f79dd28 | Paolo Bonzini | return fread(buf, 1, size, s->stdio_file); |
350 | a672b469 | aliguori | } |
351 | a672b469 | aliguori | |
352 | a672b469 | aliguori | QEMUFile *qemu_fopen(const char *filename, const char *mode) |
353 | a672b469 | aliguori | { |
354 | a672b469 | aliguori | QEMUFileStdio *s; |
355 | a672b469 | aliguori | |
356 | 7f79dd28 | Paolo Bonzini | if (mode == NULL || |
357 | 7f79dd28 | Paolo Bonzini | (mode[0] != 'r' && mode[0] != 'w') || |
358 | 7f79dd28 | Paolo Bonzini | mode[1] != 'b' || mode[2] != 0) { |
359 | 090414a3 | Blue Swirl | fprintf(stderr, "qemu_fopen: Argument validity check failed\n");
|
360 | 7f79dd28 | Paolo Bonzini | return NULL; |
361 | 7f79dd28 | Paolo Bonzini | } |
362 | 7f79dd28 | Paolo Bonzini | |
363 | a672b469 | aliguori | s = qemu_mallocz(sizeof(QEMUFileStdio));
|
364 | a672b469 | aliguori | |
365 | 7f79dd28 | Paolo Bonzini | s->stdio_file = fopen(filename, mode); |
366 | 7f79dd28 | Paolo Bonzini | if (!s->stdio_file)
|
367 | a672b469 | aliguori | goto fail;
|
368 | c163b5ca | lirans@il.ibm.com | |
369 | 7f79dd28 | Paolo Bonzini | if(mode[0] == 'w') { |
370 | c163b5ca | lirans@il.ibm.com | s->file = qemu_fopen_ops(s, file_put_buffer, NULL, stdio_fclose,
|
371 | c163b5ca | lirans@il.ibm.com | NULL, NULL, NULL); |
372 | 7f79dd28 | Paolo Bonzini | } else {
|
373 | c163b5ca | lirans@il.ibm.com | s->file = qemu_fopen_ops(s, NULL, file_get_buffer, stdio_fclose,
|
374 | c163b5ca | lirans@il.ibm.com | NULL, NULL, NULL); |
375 | 7f79dd28 | Paolo Bonzini | } |
376 | 7f79dd28 | Paolo Bonzini | return s->file;
|
377 | a672b469 | aliguori | fail:
|
378 | a672b469 | aliguori | qemu_free(s); |
379 | a672b469 | aliguori | return NULL; |
380 | a672b469 | aliguori | } |
381 | a672b469 | aliguori | |
382 | 178e08a5 | aliguori | static int block_put_buffer(void *opaque, const uint8_t *buf, |
383 | a672b469 | aliguori | int64_t pos, int size)
|
384 | a672b469 | aliguori | { |
385 | 45566e9c | Christoph Hellwig | bdrv_save_vmstate(opaque, buf, pos, size); |
386 | a672b469 | aliguori | return size;
|
387 | a672b469 | aliguori | } |
388 | a672b469 | aliguori | |
389 | 178e08a5 | aliguori | static int block_get_buffer(void *opaque, uint8_t *buf, int64_t pos, int size) |
390 | a672b469 | aliguori | { |
391 | 45566e9c | Christoph Hellwig | return bdrv_load_vmstate(opaque, buf, pos, size);
|
392 | a672b469 | aliguori | } |
393 | a672b469 | aliguori | |
394 | a672b469 | aliguori | static int bdrv_fclose(void *opaque) |
395 | a672b469 | aliguori | { |
396 | a672b469 | aliguori | return 0; |
397 | a672b469 | aliguori | } |
398 | a672b469 | aliguori | |
399 | 45566e9c | Christoph Hellwig | static QEMUFile *qemu_fopen_bdrv(BlockDriverState *bs, int is_writable) |
400 | a672b469 | aliguori | { |
401 | a672b469 | aliguori | if (is_writable)
|
402 | c163b5ca | lirans@il.ibm.com | return qemu_fopen_ops(bs, block_put_buffer, NULL, bdrv_fclose, |
403 | c163b5ca | lirans@il.ibm.com | NULL, NULL, NULL); |
404 | c163b5ca | lirans@il.ibm.com | return qemu_fopen_ops(bs, NULL, block_get_buffer, bdrv_fclose, NULL, NULL, NULL); |
405 | a672b469 | aliguori | } |
406 | a672b469 | aliguori | |
407 | a672b469 | aliguori | QEMUFile *qemu_fopen_ops(void *opaque, QEMUFilePutBufferFunc *put_buffer,
|
408 | a672b469 | aliguori | QEMUFileGetBufferFunc *get_buffer, |
409 | a672b469 | aliguori | QEMUFileCloseFunc *close, |
410 | 19629537 | Glauber Costa | QEMUFileRateLimit *rate_limit, |
411 | c163b5ca | lirans@il.ibm.com | QEMUFileSetRateLimit *set_rate_limit, |
412 | c163b5ca | lirans@il.ibm.com | QEMUFileGetRateLimit *get_rate_limit) |
413 | a672b469 | aliguori | { |
414 | a672b469 | aliguori | QEMUFile *f; |
415 | a672b469 | aliguori | |
416 | a672b469 | aliguori | f = qemu_mallocz(sizeof(QEMUFile));
|
417 | a672b469 | aliguori | |
418 | a672b469 | aliguori | f->opaque = opaque; |
419 | a672b469 | aliguori | f->put_buffer = put_buffer; |
420 | a672b469 | aliguori | f->get_buffer = get_buffer; |
421 | a672b469 | aliguori | f->close = close; |
422 | a672b469 | aliguori | f->rate_limit = rate_limit; |
423 | 19629537 | Glauber Costa | f->set_rate_limit = set_rate_limit; |
424 | c163b5ca | lirans@il.ibm.com | f->get_rate_limit = get_rate_limit; |
425 | a672b469 | aliguori | f->is_write = 0;
|
426 | a672b469 | aliguori | |
427 | a672b469 | aliguori | return f;
|
428 | a672b469 | aliguori | } |
429 | a672b469 | aliguori | |
430 | a672b469 | aliguori | int qemu_file_has_error(QEMUFile *f)
|
431 | a672b469 | aliguori | { |
432 | a672b469 | aliguori | return f->has_error;
|
433 | a672b469 | aliguori | } |
434 | a672b469 | aliguori | |
435 | 4dabe248 | aliguori | void qemu_file_set_error(QEMUFile *f)
|
436 | 4dabe248 | aliguori | { |
437 | 4dabe248 | aliguori | f->has_error = 1;
|
438 | 4dabe248 | aliguori | } |
439 | 4dabe248 | aliguori | |
440 | a672b469 | aliguori | void qemu_fflush(QEMUFile *f)
|
441 | a672b469 | aliguori | { |
442 | a672b469 | aliguori | if (!f->put_buffer)
|
443 | a672b469 | aliguori | return;
|
444 | a672b469 | aliguori | |
445 | a672b469 | aliguori | if (f->is_write && f->buf_index > 0) { |
446 | a672b469 | aliguori | int len;
|
447 | a672b469 | aliguori | |
448 | a672b469 | aliguori | len = f->put_buffer(f->opaque, f->buf, f->buf_offset, f->buf_index); |
449 | a672b469 | aliguori | if (len > 0) |
450 | a672b469 | aliguori | f->buf_offset += f->buf_index; |
451 | a672b469 | aliguori | else
|
452 | a672b469 | aliguori | f->has_error = 1;
|
453 | a672b469 | aliguori | f->buf_index = 0;
|
454 | a672b469 | aliguori | } |
455 | a672b469 | aliguori | } |
456 | a672b469 | aliguori | |
457 | a672b469 | aliguori | static void qemu_fill_buffer(QEMUFile *f) |
458 | a672b469 | aliguori | { |
459 | a672b469 | aliguori | int len;
|
460 | a672b469 | aliguori | |
461 | a672b469 | aliguori | if (!f->get_buffer)
|
462 | a672b469 | aliguori | return;
|
463 | a672b469 | aliguori | |
464 | a672b469 | aliguori | if (f->is_write)
|
465 | a672b469 | aliguori | abort(); |
466 | a672b469 | aliguori | |
467 | a672b469 | aliguori | len = f->get_buffer(f->opaque, f->buf, f->buf_offset, IO_BUF_SIZE); |
468 | a672b469 | aliguori | if (len > 0) { |
469 | a672b469 | aliguori | f->buf_index = 0;
|
470 | a672b469 | aliguori | f->buf_size = len; |
471 | a672b469 | aliguori | f->buf_offset += len; |
472 | a672b469 | aliguori | } else if (len != -EAGAIN) |
473 | a672b469 | aliguori | f->has_error = 1;
|
474 | a672b469 | aliguori | } |
475 | a672b469 | aliguori | |
476 | a672b469 | aliguori | int qemu_fclose(QEMUFile *f)
|
477 | a672b469 | aliguori | { |
478 | a672b469 | aliguori | int ret = 0; |
479 | a672b469 | aliguori | qemu_fflush(f); |
480 | a672b469 | aliguori | if (f->close)
|
481 | a672b469 | aliguori | ret = f->close(f->opaque); |
482 | a672b469 | aliguori | qemu_free(f); |
483 | a672b469 | aliguori | return ret;
|
484 | a672b469 | aliguori | } |
485 | a672b469 | aliguori | |
486 | a672b469 | aliguori | void qemu_file_put_notify(QEMUFile *f)
|
487 | a672b469 | aliguori | { |
488 | a672b469 | aliguori | f->put_buffer(f->opaque, NULL, 0, 0); |
489 | a672b469 | aliguori | } |
490 | a672b469 | aliguori | |
491 | a672b469 | aliguori | void qemu_put_buffer(QEMUFile *f, const uint8_t *buf, int size) |
492 | a672b469 | aliguori | { |
493 | a672b469 | aliguori | int l;
|
494 | a672b469 | aliguori | |
495 | a672b469 | aliguori | if (!f->has_error && f->is_write == 0 && f->buf_index > 0) { |
496 | a672b469 | aliguori | fprintf(stderr, |
497 | a672b469 | aliguori | "Attempted to write to buffer while read buffer is not empty\n");
|
498 | a672b469 | aliguori | abort(); |
499 | a672b469 | aliguori | } |
500 | a672b469 | aliguori | |
501 | a672b469 | aliguori | while (!f->has_error && size > 0) { |
502 | a672b469 | aliguori | l = IO_BUF_SIZE - f->buf_index; |
503 | a672b469 | aliguori | if (l > size)
|
504 | a672b469 | aliguori | l = size; |
505 | a672b469 | aliguori | memcpy(f->buf + f->buf_index, buf, l); |
506 | a672b469 | aliguori | f->is_write = 1;
|
507 | a672b469 | aliguori | f->buf_index += l; |
508 | a672b469 | aliguori | buf += l; |
509 | a672b469 | aliguori | size -= l; |
510 | a672b469 | aliguori | if (f->buf_index >= IO_BUF_SIZE)
|
511 | a672b469 | aliguori | qemu_fflush(f); |
512 | a672b469 | aliguori | } |
513 | a672b469 | aliguori | } |
514 | a672b469 | aliguori | |
515 | a672b469 | aliguori | void qemu_put_byte(QEMUFile *f, int v) |
516 | a672b469 | aliguori | { |
517 | a672b469 | aliguori | if (!f->has_error && f->is_write == 0 && f->buf_index > 0) { |
518 | a672b469 | aliguori | fprintf(stderr, |
519 | a672b469 | aliguori | "Attempted to write to buffer while read buffer is not empty\n");
|
520 | a672b469 | aliguori | abort(); |
521 | a672b469 | aliguori | } |
522 | a672b469 | aliguori | |
523 | a672b469 | aliguori | f->buf[f->buf_index++] = v; |
524 | a672b469 | aliguori | f->is_write = 1;
|
525 | a672b469 | aliguori | if (f->buf_index >= IO_BUF_SIZE)
|
526 | a672b469 | aliguori | qemu_fflush(f); |
527 | a672b469 | aliguori | } |
528 | a672b469 | aliguori | |
529 | a672b469 | aliguori | int qemu_get_buffer(QEMUFile *f, uint8_t *buf, int size1) |
530 | a672b469 | aliguori | { |
531 | a672b469 | aliguori | int size, l;
|
532 | a672b469 | aliguori | |
533 | a672b469 | aliguori | if (f->is_write)
|
534 | a672b469 | aliguori | abort(); |
535 | a672b469 | aliguori | |
536 | a672b469 | aliguori | size = size1; |
537 | a672b469 | aliguori | while (size > 0) { |
538 | a672b469 | aliguori | l = f->buf_size - f->buf_index; |
539 | a672b469 | aliguori | if (l == 0) { |
540 | a672b469 | aliguori | qemu_fill_buffer(f); |
541 | a672b469 | aliguori | l = f->buf_size - f->buf_index; |
542 | a672b469 | aliguori | if (l == 0) |
543 | a672b469 | aliguori | break;
|
544 | a672b469 | aliguori | } |
545 | a672b469 | aliguori | if (l > size)
|
546 | a672b469 | aliguori | l = size; |
547 | a672b469 | aliguori | memcpy(buf, f->buf + f->buf_index, l); |
548 | a672b469 | aliguori | f->buf_index += l; |
549 | a672b469 | aliguori | buf += l; |
550 | a672b469 | aliguori | size -= l; |
551 | a672b469 | aliguori | } |
552 | a672b469 | aliguori | return size1 - size;
|
553 | a672b469 | aliguori | } |
554 | a672b469 | aliguori | |
555 | a672b469 | aliguori | int qemu_get_byte(QEMUFile *f)
|
556 | a672b469 | aliguori | { |
557 | a672b469 | aliguori | if (f->is_write)
|
558 | a672b469 | aliguori | abort(); |
559 | a672b469 | aliguori | |
560 | a672b469 | aliguori | if (f->buf_index >= f->buf_size) {
|
561 | a672b469 | aliguori | qemu_fill_buffer(f); |
562 | a672b469 | aliguori | if (f->buf_index >= f->buf_size)
|
563 | a672b469 | aliguori | return 0; |
564 | a672b469 | aliguori | } |
565 | a672b469 | aliguori | return f->buf[f->buf_index++];
|
566 | a672b469 | aliguori | } |
567 | a672b469 | aliguori | |
568 | a672b469 | aliguori | int64_t qemu_ftell(QEMUFile *f) |
569 | a672b469 | aliguori | { |
570 | a672b469 | aliguori | return f->buf_offset - f->buf_size + f->buf_index;
|
571 | a672b469 | aliguori | } |
572 | a672b469 | aliguori | |
573 | a672b469 | aliguori | int64_t qemu_fseek(QEMUFile *f, int64_t pos, int whence)
|
574 | a672b469 | aliguori | { |
575 | a672b469 | aliguori | if (whence == SEEK_SET) {
|
576 | a672b469 | aliguori | /* nothing to do */
|
577 | a672b469 | aliguori | } else if (whence == SEEK_CUR) { |
578 | a672b469 | aliguori | pos += qemu_ftell(f); |
579 | a672b469 | aliguori | } else {
|
580 | a672b469 | aliguori | /* SEEK_END not supported */
|
581 | a672b469 | aliguori | return -1; |
582 | a672b469 | aliguori | } |
583 | a672b469 | aliguori | if (f->put_buffer) {
|
584 | a672b469 | aliguori | qemu_fflush(f); |
585 | a672b469 | aliguori | f->buf_offset = pos; |
586 | a672b469 | aliguori | } else {
|
587 | a672b469 | aliguori | f->buf_offset = pos; |
588 | a672b469 | aliguori | f->buf_index = 0;
|
589 | a672b469 | aliguori | f->buf_size = 0;
|
590 | a672b469 | aliguori | } |
591 | a672b469 | aliguori | return pos;
|
592 | a672b469 | aliguori | } |
593 | a672b469 | aliguori | |
594 | a672b469 | aliguori | int qemu_file_rate_limit(QEMUFile *f)
|
595 | a672b469 | aliguori | { |
596 | a672b469 | aliguori | if (f->rate_limit)
|
597 | a672b469 | aliguori | return f->rate_limit(f->opaque);
|
598 | a672b469 | aliguori | |
599 | a672b469 | aliguori | return 0; |
600 | a672b469 | aliguori | } |
601 | a672b469 | aliguori | |
602 | c163b5ca | lirans@il.ibm.com | size_t qemu_file_get_rate_limit(QEMUFile *f) |
603 | c163b5ca | lirans@il.ibm.com | { |
604 | c163b5ca | lirans@il.ibm.com | if (f->get_rate_limit)
|
605 | c163b5ca | lirans@il.ibm.com | return f->get_rate_limit(f->opaque);
|
606 | c163b5ca | lirans@il.ibm.com | |
607 | c163b5ca | lirans@il.ibm.com | return 0; |
608 | c163b5ca | lirans@il.ibm.com | } |
609 | c163b5ca | lirans@il.ibm.com | |
610 | 19629537 | Glauber Costa | size_t qemu_file_set_rate_limit(QEMUFile *f, size_t new_rate) |
611 | 19629537 | Glauber Costa | { |
612 | 0bb05eaf | Glauber Costa | /* any failed or completed migration keeps its state to allow probing of
|
613 | 0bb05eaf | Glauber Costa | * migration data, but has no associated file anymore */
|
614 | 0bb05eaf | Glauber Costa | if (f && f->set_rate_limit)
|
615 | 19629537 | Glauber Costa | return f->set_rate_limit(f->opaque, new_rate);
|
616 | 19629537 | Glauber Costa | |
617 | 19629537 | Glauber Costa | return 0; |
618 | 19629537 | Glauber Costa | } |
619 | 19629537 | Glauber Costa | |
620 | a672b469 | aliguori | void qemu_put_be16(QEMUFile *f, unsigned int v) |
621 | a672b469 | aliguori | { |
622 | a672b469 | aliguori | qemu_put_byte(f, v >> 8);
|
623 | a672b469 | aliguori | qemu_put_byte(f, v); |
624 | a672b469 | aliguori | } |
625 | a672b469 | aliguori | |
626 | a672b469 | aliguori | void qemu_put_be32(QEMUFile *f, unsigned int v) |
627 | a672b469 | aliguori | { |
628 | a672b469 | aliguori | qemu_put_byte(f, v >> 24);
|
629 | a672b469 | aliguori | qemu_put_byte(f, v >> 16);
|
630 | a672b469 | aliguori | qemu_put_byte(f, v >> 8);
|
631 | a672b469 | aliguori | qemu_put_byte(f, v); |
632 | a672b469 | aliguori | } |
633 | a672b469 | aliguori | |
634 | a672b469 | aliguori | void qemu_put_be64(QEMUFile *f, uint64_t v)
|
635 | a672b469 | aliguori | { |
636 | a672b469 | aliguori | qemu_put_be32(f, v >> 32);
|
637 | a672b469 | aliguori | qemu_put_be32(f, v); |
638 | a672b469 | aliguori | } |
639 | a672b469 | aliguori | |
640 | a672b469 | aliguori | unsigned int qemu_get_be16(QEMUFile *f) |
641 | a672b469 | aliguori | { |
642 | a672b469 | aliguori | unsigned int v; |
643 | a672b469 | aliguori | v = qemu_get_byte(f) << 8;
|
644 | a672b469 | aliguori | v |= qemu_get_byte(f); |
645 | a672b469 | aliguori | return v;
|
646 | a672b469 | aliguori | } |
647 | a672b469 | aliguori | |
648 | a672b469 | aliguori | unsigned int qemu_get_be32(QEMUFile *f) |
649 | a672b469 | aliguori | { |
650 | a672b469 | aliguori | unsigned int v; |
651 | a672b469 | aliguori | v = qemu_get_byte(f) << 24;
|
652 | a672b469 | aliguori | v |= qemu_get_byte(f) << 16;
|
653 | a672b469 | aliguori | v |= qemu_get_byte(f) << 8;
|
654 | a672b469 | aliguori | v |= qemu_get_byte(f); |
655 | a672b469 | aliguori | return v;
|
656 | a672b469 | aliguori | } |
657 | a672b469 | aliguori | |
658 | a672b469 | aliguori | uint64_t qemu_get_be64(QEMUFile *f) |
659 | a672b469 | aliguori | { |
660 | a672b469 | aliguori | uint64_t v; |
661 | a672b469 | aliguori | v = (uint64_t)qemu_get_be32(f) << 32;
|
662 | a672b469 | aliguori | v |= qemu_get_be32(f); |
663 | a672b469 | aliguori | return v;
|
664 | a672b469 | aliguori | } |
665 | a672b469 | aliguori | |
666 | 9ed7d6ae | Juan Quintela | /* 8 bit int */
|
667 | 9ed7d6ae | Juan Quintela | |
668 | 9ed7d6ae | Juan Quintela | static int get_int8(QEMUFile *f, void *pv, size_t size) |
669 | 9ed7d6ae | Juan Quintela | { |
670 | 9ed7d6ae | Juan Quintela | int8_t *v = pv; |
671 | 9ed7d6ae | Juan Quintela | qemu_get_s8s(f, v); |
672 | 9ed7d6ae | Juan Quintela | return 0; |
673 | 9ed7d6ae | Juan Quintela | } |
674 | 9ed7d6ae | Juan Quintela | |
675 | 84e2e3eb | Juan Quintela | static void put_int8(QEMUFile *f, void *pv, size_t size) |
676 | 9ed7d6ae | Juan Quintela | { |
677 | 84e2e3eb | Juan Quintela | int8_t *v = pv; |
678 | 9ed7d6ae | Juan Quintela | qemu_put_s8s(f, v); |
679 | 9ed7d6ae | Juan Quintela | } |
680 | 9ed7d6ae | Juan Quintela | |
681 | 9ed7d6ae | Juan Quintela | const VMStateInfo vmstate_info_int8 = {
|
682 | 9ed7d6ae | Juan Quintela | .name = "int8",
|
683 | 9ed7d6ae | Juan Quintela | .get = get_int8, |
684 | 9ed7d6ae | Juan Quintela | .put = put_int8, |
685 | 9ed7d6ae | Juan Quintela | }; |
686 | 9ed7d6ae | Juan Quintela | |
687 | 9ed7d6ae | Juan Quintela | /* 16 bit int */
|
688 | 9ed7d6ae | Juan Quintela | |
689 | 9ed7d6ae | Juan Quintela | static int get_int16(QEMUFile *f, void *pv, size_t size) |
690 | 9ed7d6ae | Juan Quintela | { |
691 | 9ed7d6ae | Juan Quintela | int16_t *v = pv; |
692 | 9ed7d6ae | Juan Quintela | qemu_get_sbe16s(f, v); |
693 | 9ed7d6ae | Juan Quintela | return 0; |
694 | 9ed7d6ae | Juan Quintela | } |
695 | 9ed7d6ae | Juan Quintela | |
696 | 84e2e3eb | Juan Quintela | static void put_int16(QEMUFile *f, void *pv, size_t size) |
697 | 9ed7d6ae | Juan Quintela | { |
698 | 84e2e3eb | Juan Quintela | int16_t *v = pv; |
699 | 9ed7d6ae | Juan Quintela | qemu_put_sbe16s(f, v); |
700 | 9ed7d6ae | Juan Quintela | } |
701 | 9ed7d6ae | Juan Quintela | |
702 | 9ed7d6ae | Juan Quintela | const VMStateInfo vmstate_info_int16 = {
|
703 | 9ed7d6ae | Juan Quintela | .name = "int16",
|
704 | 9ed7d6ae | Juan Quintela | .get = get_int16, |
705 | 9ed7d6ae | Juan Quintela | .put = put_int16, |
706 | 9ed7d6ae | Juan Quintela | }; |
707 | 9ed7d6ae | Juan Quintela | |
708 | 9ed7d6ae | Juan Quintela | /* 32 bit int */
|
709 | 9ed7d6ae | Juan Quintela | |
710 | 9ed7d6ae | Juan Quintela | static int get_int32(QEMUFile *f, void *pv, size_t size) |
711 | 9ed7d6ae | Juan Quintela | { |
712 | 9ed7d6ae | Juan Quintela | int32_t *v = pv; |
713 | 9ed7d6ae | Juan Quintela | qemu_get_sbe32s(f, v); |
714 | 9ed7d6ae | Juan Quintela | return 0; |
715 | 9ed7d6ae | Juan Quintela | } |
716 | 9ed7d6ae | Juan Quintela | |
717 | 84e2e3eb | Juan Quintela | static void put_int32(QEMUFile *f, void *pv, size_t size) |
718 | 9ed7d6ae | Juan Quintela | { |
719 | 84e2e3eb | Juan Quintela | int32_t *v = pv; |
720 | 9ed7d6ae | Juan Quintela | qemu_put_sbe32s(f, v); |
721 | 9ed7d6ae | Juan Quintela | } |
722 | 9ed7d6ae | Juan Quintela | |
723 | 9ed7d6ae | Juan Quintela | const VMStateInfo vmstate_info_int32 = {
|
724 | 9ed7d6ae | Juan Quintela | .name = "int32",
|
725 | 9ed7d6ae | Juan Quintela | .get = get_int32, |
726 | 9ed7d6ae | Juan Quintela | .put = put_int32, |
727 | 9ed7d6ae | Juan Quintela | }; |
728 | 9ed7d6ae | Juan Quintela | |
729 | 82501660 | Juan Quintela | /* 32 bit int. See that the received value is the same than the one
|
730 | 82501660 | Juan Quintela | in the field */
|
731 | 82501660 | Juan Quintela | |
732 | 82501660 | Juan Quintela | static int get_int32_equal(QEMUFile *f, void *pv, size_t size) |
733 | 82501660 | Juan Quintela | { |
734 | 82501660 | Juan Quintela | int32_t *v = pv; |
735 | 82501660 | Juan Quintela | int32_t v2; |
736 | 82501660 | Juan Quintela | qemu_get_sbe32s(f, &v2); |
737 | 82501660 | Juan Quintela | |
738 | 82501660 | Juan Quintela | if (*v == v2)
|
739 | 82501660 | Juan Quintela | return 0; |
740 | 82501660 | Juan Quintela | return -EINVAL;
|
741 | 82501660 | Juan Quintela | } |
742 | 82501660 | Juan Quintela | |
743 | 82501660 | Juan Quintela | const VMStateInfo vmstate_info_int32_equal = {
|
744 | 82501660 | Juan Quintela | .name = "int32 equal",
|
745 | 82501660 | Juan Quintela | .get = get_int32_equal, |
746 | 82501660 | Juan Quintela | .put = put_int32, |
747 | 82501660 | Juan Quintela | }; |
748 | 82501660 | Juan Quintela | |
749 | 0a031e0a | Juan Quintela | /* 32 bit int. See that the received value is the less or the same
|
750 | 0a031e0a | Juan Quintela | than the one in the field */
|
751 | 0a031e0a | Juan Quintela | |
752 | 0a031e0a | Juan Quintela | static int get_int32_le(QEMUFile *f, void *pv, size_t size) |
753 | 0a031e0a | Juan Quintela | { |
754 | 0a031e0a | Juan Quintela | int32_t *old = pv; |
755 | 0a031e0a | Juan Quintela | int32_t new; |
756 | 0a031e0a | Juan Quintela | qemu_get_sbe32s(f, &new); |
757 | 0a031e0a | Juan Quintela | |
758 | 0a031e0a | Juan Quintela | if (*old <= new)
|
759 | 0a031e0a | Juan Quintela | return 0; |
760 | 0a031e0a | Juan Quintela | return -EINVAL;
|
761 | 0a031e0a | Juan Quintela | } |
762 | 0a031e0a | Juan Quintela | |
763 | 0a031e0a | Juan Quintela | const VMStateInfo vmstate_info_int32_le = {
|
764 | 0a031e0a | Juan Quintela | .name = "int32 equal",
|
765 | 0a031e0a | Juan Quintela | .get = get_int32_le, |
766 | 0a031e0a | Juan Quintela | .put = put_int32, |
767 | 0a031e0a | Juan Quintela | }; |
768 | 0a031e0a | Juan Quintela | |
769 | 9ed7d6ae | Juan Quintela | /* 64 bit int */
|
770 | 9ed7d6ae | Juan Quintela | |
771 | 9ed7d6ae | Juan Quintela | static int get_int64(QEMUFile *f, void *pv, size_t size) |
772 | 9ed7d6ae | Juan Quintela | { |
773 | 9ed7d6ae | Juan Quintela | int64_t *v = pv; |
774 | 9ed7d6ae | Juan Quintela | qemu_get_sbe64s(f, v); |
775 | 9ed7d6ae | Juan Quintela | return 0; |
776 | 9ed7d6ae | Juan Quintela | } |
777 | 9ed7d6ae | Juan Quintela | |
778 | 84e2e3eb | Juan Quintela | static void put_int64(QEMUFile *f, void *pv, size_t size) |
779 | 9ed7d6ae | Juan Quintela | { |
780 | 84e2e3eb | Juan Quintela | int64_t *v = pv; |
781 | 9ed7d6ae | Juan Quintela | qemu_put_sbe64s(f, v); |
782 | 9ed7d6ae | Juan Quintela | } |
783 | 9ed7d6ae | Juan Quintela | |
784 | 9ed7d6ae | Juan Quintela | const VMStateInfo vmstate_info_int64 = {
|
785 | 9ed7d6ae | Juan Quintela | .name = "int64",
|
786 | 9ed7d6ae | Juan Quintela | .get = get_int64, |
787 | 9ed7d6ae | Juan Quintela | .put = put_int64, |
788 | 9ed7d6ae | Juan Quintela | }; |
789 | 9ed7d6ae | Juan Quintela | |
790 | 9ed7d6ae | Juan Quintela | /* 8 bit unsigned int */
|
791 | 9ed7d6ae | Juan Quintela | |
792 | 9ed7d6ae | Juan Quintela | static int get_uint8(QEMUFile *f, void *pv, size_t size) |
793 | 9ed7d6ae | Juan Quintela | { |
794 | 9ed7d6ae | Juan Quintela | uint8_t *v = pv; |
795 | 9ed7d6ae | Juan Quintela | qemu_get_8s(f, v); |
796 | 9ed7d6ae | Juan Quintela | return 0; |
797 | 9ed7d6ae | Juan Quintela | } |
798 | 9ed7d6ae | Juan Quintela | |
799 | 84e2e3eb | Juan Quintela | static void put_uint8(QEMUFile *f, void *pv, size_t size) |
800 | 9ed7d6ae | Juan Quintela | { |
801 | 84e2e3eb | Juan Quintela | uint8_t *v = pv; |
802 | 9ed7d6ae | Juan Quintela | qemu_put_8s(f, v); |
803 | 9ed7d6ae | Juan Quintela | } |
804 | 9ed7d6ae | Juan Quintela | |
805 | 9ed7d6ae | Juan Quintela | const VMStateInfo vmstate_info_uint8 = {
|
806 | 9ed7d6ae | Juan Quintela | .name = "uint8",
|
807 | 9ed7d6ae | Juan Quintela | .get = get_uint8, |
808 | 9ed7d6ae | Juan Quintela | .put = put_uint8, |
809 | 9ed7d6ae | Juan Quintela | }; |
810 | 9ed7d6ae | Juan Quintela | |
811 | 9ed7d6ae | Juan Quintela | /* 16 bit unsigned int */
|
812 | 9ed7d6ae | Juan Quintela | |
813 | 9ed7d6ae | Juan Quintela | static int get_uint16(QEMUFile *f, void *pv, size_t size) |
814 | 9ed7d6ae | Juan Quintela | { |
815 | 9ed7d6ae | Juan Quintela | uint16_t *v = pv; |
816 | 9ed7d6ae | Juan Quintela | qemu_get_be16s(f, v); |
817 | 9ed7d6ae | Juan Quintela | return 0; |
818 | 9ed7d6ae | Juan Quintela | } |
819 | 9ed7d6ae | Juan Quintela | |
820 | 84e2e3eb | Juan Quintela | static void put_uint16(QEMUFile *f, void *pv, size_t size) |
821 | 9ed7d6ae | Juan Quintela | { |
822 | 84e2e3eb | Juan Quintela | uint16_t *v = pv; |
823 | 9ed7d6ae | Juan Quintela | qemu_put_be16s(f, v); |
824 | 9ed7d6ae | Juan Quintela | } |
825 | 9ed7d6ae | Juan Quintela | |
826 | 9ed7d6ae | Juan Quintela | const VMStateInfo vmstate_info_uint16 = {
|
827 | 9ed7d6ae | Juan Quintela | .name = "uint16",
|
828 | 9ed7d6ae | Juan Quintela | .get = get_uint16, |
829 | 9ed7d6ae | Juan Quintela | .put = put_uint16, |
830 | 9ed7d6ae | Juan Quintela | }; |
831 | 9ed7d6ae | Juan Quintela | |
832 | 9ed7d6ae | Juan Quintela | /* 32 bit unsigned int */
|
833 | 9ed7d6ae | Juan Quintela | |
834 | 9ed7d6ae | Juan Quintela | static int get_uint32(QEMUFile *f, void *pv, size_t size) |
835 | 9ed7d6ae | Juan Quintela | { |
836 | 9ed7d6ae | Juan Quintela | uint32_t *v = pv; |
837 | 9ed7d6ae | Juan Quintela | qemu_get_be32s(f, v); |
838 | 9ed7d6ae | Juan Quintela | return 0; |
839 | 9ed7d6ae | Juan Quintela | } |
840 | 9ed7d6ae | Juan Quintela | |
841 | 84e2e3eb | Juan Quintela | static void put_uint32(QEMUFile *f, void *pv, size_t size) |
842 | 9ed7d6ae | Juan Quintela | { |
843 | 84e2e3eb | Juan Quintela | uint32_t *v = pv; |
844 | 9ed7d6ae | Juan Quintela | qemu_put_be32s(f, v); |
845 | 9ed7d6ae | Juan Quintela | } |
846 | 9ed7d6ae | Juan Quintela | |
847 | 9ed7d6ae | Juan Quintela | const VMStateInfo vmstate_info_uint32 = {
|
848 | 9ed7d6ae | Juan Quintela | .name = "uint32",
|
849 | 9ed7d6ae | Juan Quintela | .get = get_uint32, |
850 | 9ed7d6ae | Juan Quintela | .put = put_uint32, |
851 | 9ed7d6ae | Juan Quintela | }; |
852 | 9ed7d6ae | Juan Quintela | |
853 | 9ed7d6ae | Juan Quintela | /* 64 bit unsigned int */
|
854 | 9ed7d6ae | Juan Quintela | |
855 | 9ed7d6ae | Juan Quintela | static int get_uint64(QEMUFile *f, void *pv, size_t size) |
856 | 9ed7d6ae | Juan Quintela | { |
857 | 9ed7d6ae | Juan Quintela | uint64_t *v = pv; |
858 | 9ed7d6ae | Juan Quintela | qemu_get_be64s(f, v); |
859 | 9ed7d6ae | Juan Quintela | return 0; |
860 | 9ed7d6ae | Juan Quintela | } |
861 | 9ed7d6ae | Juan Quintela | |
862 | 84e2e3eb | Juan Quintela | static void put_uint64(QEMUFile *f, void *pv, size_t size) |
863 | 9ed7d6ae | Juan Quintela | { |
864 | 84e2e3eb | Juan Quintela | uint64_t *v = pv; |
865 | 9ed7d6ae | Juan Quintela | qemu_put_be64s(f, v); |
866 | 9ed7d6ae | Juan Quintela | } |
867 | 9ed7d6ae | Juan Quintela | |
868 | 9ed7d6ae | Juan Quintela | const VMStateInfo vmstate_info_uint64 = {
|
869 | 9ed7d6ae | Juan Quintela | .name = "uint64",
|
870 | 9ed7d6ae | Juan Quintela | .get = get_uint64, |
871 | 9ed7d6ae | Juan Quintela | .put = put_uint64, |
872 | 9ed7d6ae | Juan Quintela | }; |
873 | 9ed7d6ae | Juan Quintela | |
874 | 80cd83e7 | Juan Quintela | /* 8 bit int. See that the received value is the same than the one
|
875 | 80cd83e7 | Juan Quintela | in the field */
|
876 | 80cd83e7 | Juan Quintela | |
877 | 80cd83e7 | Juan Quintela | static int get_uint8_equal(QEMUFile *f, void *pv, size_t size) |
878 | 80cd83e7 | Juan Quintela | { |
879 | 80cd83e7 | Juan Quintela | uint8_t *v = pv; |
880 | 80cd83e7 | Juan Quintela | uint8_t v2; |
881 | 80cd83e7 | Juan Quintela | qemu_get_8s(f, &v2); |
882 | 80cd83e7 | Juan Quintela | |
883 | 80cd83e7 | Juan Quintela | if (*v == v2)
|
884 | 80cd83e7 | Juan Quintela | return 0; |
885 | 80cd83e7 | Juan Quintela | return -EINVAL;
|
886 | 80cd83e7 | Juan Quintela | } |
887 | 80cd83e7 | Juan Quintela | |
888 | 80cd83e7 | Juan Quintela | const VMStateInfo vmstate_info_uint8_equal = {
|
889 | aa1cce69 | Juan Quintela | .name = "uint8 equal",
|
890 | 80cd83e7 | Juan Quintela | .get = get_uint8_equal, |
891 | 80cd83e7 | Juan Quintela | .put = put_uint8, |
892 | 80cd83e7 | Juan Quintela | }; |
893 | 80cd83e7 | Juan Quintela | |
894 | dc3b83a0 | Juan Quintela | /* 16 bit unsigned int int. See that the received value is the same than the one
|
895 | dc3b83a0 | Juan Quintela | in the field */
|
896 | dc3b83a0 | Juan Quintela | |
897 | dc3b83a0 | Juan Quintela | static int get_uint16_equal(QEMUFile *f, void *pv, size_t size) |
898 | dc3b83a0 | Juan Quintela | { |
899 | dc3b83a0 | Juan Quintela | uint16_t *v = pv; |
900 | dc3b83a0 | Juan Quintela | uint16_t v2; |
901 | dc3b83a0 | Juan Quintela | qemu_get_be16s(f, &v2); |
902 | dc3b83a0 | Juan Quintela | |
903 | dc3b83a0 | Juan Quintela | if (*v == v2)
|
904 | dc3b83a0 | Juan Quintela | return 0; |
905 | dc3b83a0 | Juan Quintela | return -EINVAL;
|
906 | dc3b83a0 | Juan Quintela | } |
907 | dc3b83a0 | Juan Quintela | |
908 | dc3b83a0 | Juan Quintela | const VMStateInfo vmstate_info_uint16_equal = {
|
909 | dc3b83a0 | Juan Quintela | .name = "uint16 equal",
|
910 | dc3b83a0 | Juan Quintela | .get = get_uint16_equal, |
911 | dc3b83a0 | Juan Quintela | .put = put_uint16, |
912 | dc3b83a0 | Juan Quintela | }; |
913 | dc3b83a0 | Juan Quintela | |
914 | dde0463b | Juan Quintela | /* timers */
|
915 | dde0463b | Juan Quintela | |
916 | dde0463b | Juan Quintela | static int get_timer(QEMUFile *f, void *pv, size_t size) |
917 | dde0463b | Juan Quintela | { |
918 | dde0463b | Juan Quintela | QEMUTimer *v = pv; |
919 | dde0463b | Juan Quintela | qemu_get_timer(f, v); |
920 | dde0463b | Juan Quintela | return 0; |
921 | dde0463b | Juan Quintela | } |
922 | dde0463b | Juan Quintela | |
923 | 84e2e3eb | Juan Quintela | static void put_timer(QEMUFile *f, void *pv, size_t size) |
924 | dde0463b | Juan Quintela | { |
925 | 84e2e3eb | Juan Quintela | QEMUTimer *v = pv; |
926 | dde0463b | Juan Quintela | qemu_put_timer(f, v); |
927 | dde0463b | Juan Quintela | } |
928 | dde0463b | Juan Quintela | |
929 | dde0463b | Juan Quintela | const VMStateInfo vmstate_info_timer = {
|
930 | dde0463b | Juan Quintela | .name = "timer",
|
931 | dde0463b | Juan Quintela | .get = get_timer, |
932 | dde0463b | Juan Quintela | .put = put_timer, |
933 | dde0463b | Juan Quintela | }; |
934 | dde0463b | Juan Quintela | |
935 | 6f67c50f | Juan Quintela | /* uint8_t buffers */
|
936 | 6f67c50f | Juan Quintela | |
937 | 6f67c50f | Juan Quintela | static int get_buffer(QEMUFile *f, void *pv, size_t size) |
938 | 6f67c50f | Juan Quintela | { |
939 | 6f67c50f | Juan Quintela | uint8_t *v = pv; |
940 | 6f67c50f | Juan Quintela | qemu_get_buffer(f, v, size); |
941 | 6f67c50f | Juan Quintela | return 0; |
942 | 6f67c50f | Juan Quintela | } |
943 | 6f67c50f | Juan Quintela | |
944 | 84e2e3eb | Juan Quintela | static void put_buffer(QEMUFile *f, void *pv, size_t size) |
945 | 6f67c50f | Juan Quintela | { |
946 | 84e2e3eb | Juan Quintela | uint8_t *v = pv; |
947 | 6f67c50f | Juan Quintela | qemu_put_buffer(f, v, size); |
948 | 6f67c50f | Juan Quintela | } |
949 | 6f67c50f | Juan Quintela | |
950 | 6f67c50f | Juan Quintela | const VMStateInfo vmstate_info_buffer = {
|
951 | 6f67c50f | Juan Quintela | .name = "buffer",
|
952 | 6f67c50f | Juan Quintela | .get = get_buffer, |
953 | 6f67c50f | Juan Quintela | .put = put_buffer, |
954 | 6f67c50f | Juan Quintela | }; |
955 | 6f67c50f | Juan Quintela | |
956 | 76507c75 | Juan Quintela | /* unused buffers: space that was used for some fields that are
|
957 | 76507c75 | Juan Quintela | not usefull anymore */
|
958 | 76507c75 | Juan Quintela | |
959 | 76507c75 | Juan Quintela | static int get_unused_buffer(QEMUFile *f, void *pv, size_t size) |
960 | 76507c75 | Juan Quintela | { |
961 | 21174c34 | Jan Kiszka | uint8_t buf[1024];
|
962 | 21174c34 | Jan Kiszka | int block_len;
|
963 | 21174c34 | Jan Kiszka | |
964 | 21174c34 | Jan Kiszka | while (size > 0) { |
965 | 21174c34 | Jan Kiszka | block_len = MIN(sizeof(buf), size);
|
966 | 21174c34 | Jan Kiszka | size -= block_len; |
967 | 21174c34 | Jan Kiszka | qemu_get_buffer(f, buf, block_len); |
968 | 21174c34 | Jan Kiszka | } |
969 | 21174c34 | Jan Kiszka | return 0; |
970 | 76507c75 | Juan Quintela | } |
971 | 76507c75 | Juan Quintela | |
972 | 76507c75 | Juan Quintela | static void put_unused_buffer(QEMUFile *f, void *pv, size_t size) |
973 | 76507c75 | Juan Quintela | { |
974 | 21174c34 | Jan Kiszka | static const uint8_t buf[1024]; |
975 | 21174c34 | Jan Kiszka | int block_len;
|
976 | 21174c34 | Jan Kiszka | |
977 | 21174c34 | Jan Kiszka | while (size > 0) { |
978 | 21174c34 | Jan Kiszka | block_len = MIN(sizeof(buf), size);
|
979 | 21174c34 | Jan Kiszka | size -= block_len; |
980 | 21174c34 | Jan Kiszka | qemu_put_buffer(f, buf, block_len); |
981 | 21174c34 | Jan Kiszka | } |
982 | 76507c75 | Juan Quintela | } |
983 | 76507c75 | Juan Quintela | |
984 | 76507c75 | Juan Quintela | const VMStateInfo vmstate_info_unused_buffer = {
|
985 | 76507c75 | Juan Quintela | .name = "unused_buffer",
|
986 | 76507c75 | Juan Quintela | .get = get_unused_buffer, |
987 | 76507c75 | Juan Quintela | .put = put_unused_buffer, |
988 | 76507c75 | Juan Quintela | }; |
989 | 76507c75 | Juan Quintela | |
990 | a672b469 | aliguori | typedef struct SaveStateEntry { |
991 | 72cf2d4f | Blue Swirl | QTAILQ_ENTRY(SaveStateEntry) entry; |
992 | a672b469 | aliguori | char idstr[256]; |
993 | a672b469 | aliguori | int instance_id;
|
994 | 4d2ffa08 | Jan Kiszka | int alias_id;
|
995 | a672b469 | aliguori | int version_id;
|
996 | a672b469 | aliguori | int section_id;
|
997 | c163b5ca | lirans@il.ibm.com | SaveSetParamsHandler *set_params; |
998 | a672b469 | aliguori | SaveLiveStateHandler *save_live_state; |
999 | a672b469 | aliguori | SaveStateHandler *save_state; |
1000 | a672b469 | aliguori | LoadStateHandler *load_state; |
1001 | 9ed7d6ae | Juan Quintela | const VMStateDescription *vmsd;
|
1002 | a672b469 | aliguori | void *opaque;
|
1003 | a672b469 | aliguori | } SaveStateEntry; |
1004 | a672b469 | aliguori | |
1005 | c163b5ca | lirans@il.ibm.com | |
1006 | 72cf2d4f | Blue Swirl | static QTAILQ_HEAD(savevm_handlers, SaveStateEntry) savevm_handlers =
|
1007 | 72cf2d4f | Blue Swirl | QTAILQ_HEAD_INITIALIZER(savevm_handlers); |
1008 | 9ed7d6ae | Juan Quintela | static int global_section_id; |
1009 | a672b469 | aliguori | |
1010 | 8718e999 | Juan Quintela | static int calculate_new_instance_id(const char *idstr) |
1011 | 8718e999 | Juan Quintela | { |
1012 | 8718e999 | Juan Quintela | SaveStateEntry *se; |
1013 | 8718e999 | Juan Quintela | int instance_id = 0; |
1014 | 8718e999 | Juan Quintela | |
1015 | 72cf2d4f | Blue Swirl | QTAILQ_FOREACH(se, &savevm_handlers, entry) { |
1016 | 8718e999 | Juan Quintela | if (strcmp(idstr, se->idstr) == 0 |
1017 | 8718e999 | Juan Quintela | && instance_id <= se->instance_id) { |
1018 | 8718e999 | Juan Quintela | instance_id = se->instance_id + 1;
|
1019 | 8718e999 | Juan Quintela | } |
1020 | 8718e999 | Juan Quintela | } |
1021 | 8718e999 | Juan Quintela | return instance_id;
|
1022 | 8718e999 | Juan Quintela | } |
1023 | 8718e999 | Juan Quintela | |
1024 | a672b469 | aliguori | /* TODO: Individual devices generally have very little idea about the rest
|
1025 | a672b469 | aliguori | of the system, so instance_id should be removed/replaced.
|
1026 | a672b469 | aliguori | Meanwhile pass -1 as instance_id if you do not already have a clearly
|
1027 | a672b469 | aliguori | distinguishing id for all instances of your device class. */
|
1028 | a672b469 | aliguori | int register_savevm_live(const char *idstr, |
1029 | a672b469 | aliguori | int instance_id,
|
1030 | a672b469 | aliguori | int version_id,
|
1031 | c163b5ca | lirans@il.ibm.com | SaveSetParamsHandler *set_params, |
1032 | a672b469 | aliguori | SaveLiveStateHandler *save_live_state, |
1033 | a672b469 | aliguori | SaveStateHandler *save_state, |
1034 | a672b469 | aliguori | LoadStateHandler *load_state, |
1035 | a672b469 | aliguori | void *opaque)
|
1036 | a672b469 | aliguori | { |
1037 | 8718e999 | Juan Quintela | SaveStateEntry *se; |
1038 | a672b469 | aliguori | |
1039 | c163b5ca | lirans@il.ibm.com | se = qemu_mallocz(sizeof(SaveStateEntry));
|
1040 | a672b469 | aliguori | pstrcpy(se->idstr, sizeof(se->idstr), idstr);
|
1041 | a672b469 | aliguori | se->version_id = version_id; |
1042 | a672b469 | aliguori | se->section_id = global_section_id++; |
1043 | c163b5ca | lirans@il.ibm.com | se->set_params = set_params; |
1044 | a672b469 | aliguori | se->save_live_state = save_live_state; |
1045 | a672b469 | aliguori | se->save_state = save_state; |
1046 | a672b469 | aliguori | se->load_state = load_state; |
1047 | a672b469 | aliguori | se->opaque = opaque; |
1048 | 9ed7d6ae | Juan Quintela | se->vmsd = NULL;
|
1049 | a672b469 | aliguori | |
1050 | 8718e999 | Juan Quintela | if (instance_id == -1) { |
1051 | 8718e999 | Juan Quintela | se->instance_id = calculate_new_instance_id(idstr); |
1052 | 8718e999 | Juan Quintela | } else {
|
1053 | 8718e999 | Juan Quintela | se->instance_id = instance_id; |
1054 | a672b469 | aliguori | } |
1055 | 8718e999 | Juan Quintela | /* add at the end of list */
|
1056 | 72cf2d4f | Blue Swirl | QTAILQ_INSERT_TAIL(&savevm_handlers, se, entry); |
1057 | a672b469 | aliguori | return 0; |
1058 | a672b469 | aliguori | } |
1059 | a672b469 | aliguori | |
1060 | a672b469 | aliguori | int register_savevm(const char *idstr, |
1061 | a672b469 | aliguori | int instance_id,
|
1062 | a672b469 | aliguori | int version_id,
|
1063 | a672b469 | aliguori | SaveStateHandler *save_state, |
1064 | a672b469 | aliguori | LoadStateHandler *load_state, |
1065 | a672b469 | aliguori | void *opaque)
|
1066 | a672b469 | aliguori | { |
1067 | a672b469 | aliguori | return register_savevm_live(idstr, instance_id, version_id,
|
1068 | c163b5ca | lirans@il.ibm.com | NULL, NULL, save_state, load_state, opaque); |
1069 | a672b469 | aliguori | } |
1070 | a672b469 | aliguori | |
1071 | 41bd13af | aliguori | void unregister_savevm(const char *idstr, void *opaque) |
1072 | 41bd13af | aliguori | { |
1073 | 8718e999 | Juan Quintela | SaveStateEntry *se, *new_se; |
1074 | 41bd13af | aliguori | |
1075 | 72cf2d4f | Blue Swirl | QTAILQ_FOREACH_SAFE(se, &savevm_handlers, entry, new_se) { |
1076 | 8718e999 | Juan Quintela | if (strcmp(se->idstr, idstr) == 0 && se->opaque == opaque) { |
1077 | 72cf2d4f | Blue Swirl | QTAILQ_REMOVE(&savevm_handlers, se, entry); |
1078 | 8718e999 | Juan Quintela | qemu_free(se); |
1079 | 41bd13af | aliguori | } |
1080 | 41bd13af | aliguori | } |
1081 | 41bd13af | aliguori | } |
1082 | 41bd13af | aliguori | |
1083 | 4d2ffa08 | Jan Kiszka | int vmstate_register_with_alias_id(int instance_id, |
1084 | 4d2ffa08 | Jan Kiszka | const VMStateDescription *vmsd,
|
1085 | 4d2ffa08 | Jan Kiszka | void *opaque, int alias_id, |
1086 | 4d2ffa08 | Jan Kiszka | int required_for_version)
|
1087 | 9ed7d6ae | Juan Quintela | { |
1088 | 8718e999 | Juan Quintela | SaveStateEntry *se; |
1089 | 9ed7d6ae | Juan Quintela | |
1090 | 4d2ffa08 | Jan Kiszka | /* If this triggers, alias support can be dropped for the vmsd. */
|
1091 | 4d2ffa08 | Jan Kiszka | assert(alias_id == -1 || required_for_version >= vmsd->minimum_version_id);
|
1092 | 4d2ffa08 | Jan Kiszka | |
1093 | c163b5ca | lirans@il.ibm.com | se = qemu_mallocz(sizeof(SaveStateEntry));
|
1094 | 9ed7d6ae | Juan Quintela | pstrcpy(se->idstr, sizeof(se->idstr), vmsd->name);
|
1095 | 9ed7d6ae | Juan Quintela | se->version_id = vmsd->version_id; |
1096 | 9ed7d6ae | Juan Quintela | se->section_id = global_section_id++; |
1097 | 9ed7d6ae | Juan Quintela | se->save_live_state = NULL;
|
1098 | 9ed7d6ae | Juan Quintela | se->save_state = NULL;
|
1099 | 9ed7d6ae | Juan Quintela | se->load_state = NULL;
|
1100 | 9ed7d6ae | Juan Quintela | se->opaque = opaque; |
1101 | 9ed7d6ae | Juan Quintela | se->vmsd = vmsd; |
1102 | 4d2ffa08 | Jan Kiszka | se->alias_id = alias_id; |
1103 | 9ed7d6ae | Juan Quintela | |
1104 | 8718e999 | Juan Quintela | if (instance_id == -1) { |
1105 | 8718e999 | Juan Quintela | se->instance_id = calculate_new_instance_id(vmsd->name); |
1106 | 8718e999 | Juan Quintela | } else {
|
1107 | 8718e999 | Juan Quintela | se->instance_id = instance_id; |
1108 | 9ed7d6ae | Juan Quintela | } |
1109 | 8718e999 | Juan Quintela | /* add at the end of list */
|
1110 | 72cf2d4f | Blue Swirl | QTAILQ_INSERT_TAIL(&savevm_handlers, se, entry); |
1111 | 9ed7d6ae | Juan Quintela | return 0; |
1112 | 9ed7d6ae | Juan Quintela | } |
1113 | 9ed7d6ae | Juan Quintela | |
1114 | 4d2ffa08 | Jan Kiszka | int vmstate_register(int instance_id, const VMStateDescription *vmsd, |
1115 | 4d2ffa08 | Jan Kiszka | void *opaque)
|
1116 | 4d2ffa08 | Jan Kiszka | { |
1117 | 4d2ffa08 | Jan Kiszka | return vmstate_register_with_alias_id(instance_id, vmsd, opaque, -1, 0); |
1118 | 4d2ffa08 | Jan Kiszka | } |
1119 | 4d2ffa08 | Jan Kiszka | |
1120 | 1eb7538b | Juan Quintela | void vmstate_unregister(const VMStateDescription *vmsd, void *opaque) |
1121 | 9ed7d6ae | Juan Quintela | { |
1122 | 1eb7538b | Juan Quintela | SaveStateEntry *se, *new_se; |
1123 | 1eb7538b | Juan Quintela | |
1124 | 72cf2d4f | Blue Swirl | QTAILQ_FOREACH_SAFE(se, &savevm_handlers, entry, new_se) { |
1125 | 1eb7538b | Juan Quintela | if (se->vmsd == vmsd && se->opaque == opaque) {
|
1126 | 72cf2d4f | Blue Swirl | QTAILQ_REMOVE(&savevm_handlers, se, entry); |
1127 | 1eb7538b | Juan Quintela | qemu_free(se); |
1128 | 1eb7538b | Juan Quintela | } |
1129 | 1eb7538b | Juan Quintela | } |
1130 | 9ed7d6ae | Juan Quintela | } |
1131 | 9ed7d6ae | Juan Quintela | |
1132 | 9ed7d6ae | Juan Quintela | int vmstate_load_state(QEMUFile *f, const VMStateDescription *vmsd, |
1133 | 9ed7d6ae | Juan Quintela | void *opaque, int version_id) |
1134 | 9ed7d6ae | Juan Quintela | { |
1135 | 9ed7d6ae | Juan Quintela | VMStateField *field = vmsd->fields; |
1136 | 9ed7d6ae | Juan Quintela | |
1137 | 9ed7d6ae | Juan Quintela | if (version_id > vmsd->version_id) {
|
1138 | 9ed7d6ae | Juan Quintela | return -EINVAL;
|
1139 | 9ed7d6ae | Juan Quintela | } |
1140 | 9ed7d6ae | Juan Quintela | if (version_id < vmsd->minimum_version_id_old) {
|
1141 | 9ed7d6ae | Juan Quintela | return -EINVAL;
|
1142 | 9ed7d6ae | Juan Quintela | } |
1143 | 9ed7d6ae | Juan Quintela | if (version_id < vmsd->minimum_version_id) {
|
1144 | 9ed7d6ae | Juan Quintela | return vmsd->load_state_old(f, opaque, version_id);
|
1145 | 9ed7d6ae | Juan Quintela | } |
1146 | fd4d52de | Juan Quintela | if (vmsd->pre_load) {
|
1147 | fd4d52de | Juan Quintela | int ret = vmsd->pre_load(opaque);
|
1148 | fd4d52de | Juan Quintela | if (ret)
|
1149 | fd4d52de | Juan Quintela | return ret;
|
1150 | fd4d52de | Juan Quintela | } |
1151 | 9ed7d6ae | Juan Quintela | while(field->name) {
|
1152 | f11f6a5f | Juan Quintela | if ((field->field_exists &&
|
1153 | f11f6a5f | Juan Quintela | field->field_exists(opaque, version_id)) || |
1154 | f11f6a5f | Juan Quintela | (!field->field_exists && |
1155 | f11f6a5f | Juan Quintela | field->version_id <= version_id)) { |
1156 | f752a6aa | Juan Quintela | void *base_addr = opaque + field->offset;
|
1157 | f752a6aa | Juan Quintela | int ret, i, n_elems = 1; |
1158 | e61a1e0a | Juan Quintela | int size = field->size;
|
1159 | 9ed7d6ae | Juan Quintela | |
1160 | e61a1e0a | Juan Quintela | if (field->flags & VMS_VBUFFER) {
|
1161 | e61a1e0a | Juan Quintela | size = *(int32_t *)(opaque+field->size_offset); |
1162 | 33599e2a | Juan Quintela | if (field->flags & VMS_MULTIPLY) {
|
1163 | 33599e2a | Juan Quintela | size *= field->size; |
1164 | 33599e2a | Juan Quintela | } |
1165 | e61a1e0a | Juan Quintela | } |
1166 | f752a6aa | Juan Quintela | if (field->flags & VMS_ARRAY) {
|
1167 | f752a6aa | Juan Quintela | n_elems = field->num; |
1168 | d6698281 | Juan Quintela | } else if (field->flags & VMS_VARRAY_INT32) { |
1169 | d6698281 | Juan Quintela | n_elems = *(int32_t *)(opaque+field->num_offset); |
1170 | bdb4941d | Juan Quintela | } else if (field->flags & VMS_VARRAY_UINT16) { |
1171 | bdb4941d | Juan Quintela | n_elems = *(uint16_t *)(opaque+field->num_offset); |
1172 | f752a6aa | Juan Quintela | } |
1173 | dde0463b | Juan Quintela | if (field->flags & VMS_POINTER) {
|
1174 | e61a1e0a | Juan Quintela | base_addr = *(void **)base_addr + field->start;
|
1175 | dde0463b | Juan Quintela | } |
1176 | f752a6aa | Juan Quintela | for (i = 0; i < n_elems; i++) { |
1177 | e61a1e0a | Juan Quintela | void *addr = base_addr + size * i;
|
1178 | ec245e21 | Juan Quintela | |
1179 | 19df438b | Juan Quintela | if (field->flags & VMS_ARRAY_OF_POINTER) {
|
1180 | 19df438b | Juan Quintela | addr = *(void **)addr;
|
1181 | 19df438b | Juan Quintela | } |
1182 | ec245e21 | Juan Quintela | if (field->flags & VMS_STRUCT) {
|
1183 | fa3aad24 | Juan Quintela | ret = vmstate_load_state(f, field->vmsd, addr, field->vmsd->version_id); |
1184 | ec245e21 | Juan Quintela | } else {
|
1185 | e61a1e0a | Juan Quintela | ret = field->info->get(f, addr, size); |
1186 | ec245e21 | Juan Quintela | |
1187 | ec245e21 | Juan Quintela | } |
1188 | f752a6aa | Juan Quintela | if (ret < 0) { |
1189 | f752a6aa | Juan Quintela | return ret;
|
1190 | f752a6aa | Juan Quintela | } |
1191 | 9ed7d6ae | Juan Quintela | } |
1192 | 9ed7d6ae | Juan Quintela | } |
1193 | 9ed7d6ae | Juan Quintela | field++; |
1194 | 9ed7d6ae | Juan Quintela | } |
1195 | 752ff2fa | Juan Quintela | if (vmsd->post_load) {
|
1196 | e59fb374 | Juan Quintela | return vmsd->post_load(opaque, version_id);
|
1197 | 752ff2fa | Juan Quintela | } |
1198 | 9ed7d6ae | Juan Quintela | return 0; |
1199 | 9ed7d6ae | Juan Quintela | } |
1200 | 9ed7d6ae | Juan Quintela | |
1201 | 9ed7d6ae | Juan Quintela | void vmstate_save_state(QEMUFile *f, const VMStateDescription *vmsd, |
1202 | 84e2e3eb | Juan Quintela | void *opaque)
|
1203 | 9ed7d6ae | Juan Quintela | { |
1204 | 9ed7d6ae | Juan Quintela | VMStateField *field = vmsd->fields; |
1205 | 9ed7d6ae | Juan Quintela | |
1206 | 8fb0791d | Juan Quintela | if (vmsd->pre_save) {
|
1207 | 8fb0791d | Juan Quintela | vmsd->pre_save(opaque); |
1208 | 8fb0791d | Juan Quintela | } |
1209 | 9ed7d6ae | Juan Quintela | while(field->name) {
|
1210 | f11f6a5f | Juan Quintela | if (!field->field_exists ||
|
1211 | f11f6a5f | Juan Quintela | field->field_exists(opaque, vmsd->version_id)) { |
1212 | f11f6a5f | Juan Quintela | void *base_addr = opaque + field->offset;
|
1213 | f11f6a5f | Juan Quintela | int i, n_elems = 1; |
1214 | e61a1e0a | Juan Quintela | int size = field->size;
|
1215 | dde0463b | Juan Quintela | |
1216 | e61a1e0a | Juan Quintela | if (field->flags & VMS_VBUFFER) {
|
1217 | e61a1e0a | Juan Quintela | size = *(int32_t *)(opaque+field->size_offset); |
1218 | 33599e2a | Juan Quintela | if (field->flags & VMS_MULTIPLY) {
|
1219 | 33599e2a | Juan Quintela | size *= field->size; |
1220 | 33599e2a | Juan Quintela | } |
1221 | e61a1e0a | Juan Quintela | } |
1222 | f11f6a5f | Juan Quintela | if (field->flags & VMS_ARRAY) {
|
1223 | f11f6a5f | Juan Quintela | n_elems = field->num; |
1224 | d6698281 | Juan Quintela | } else if (field->flags & VMS_VARRAY_INT32) { |
1225 | d6698281 | Juan Quintela | n_elems = *(int32_t *)(opaque+field->num_offset); |
1226 | bdb4941d | Juan Quintela | } else if (field->flags & VMS_VARRAY_UINT16) { |
1227 | bdb4941d | Juan Quintela | n_elems = *(uint16_t *)(opaque+field->num_offset); |
1228 | f11f6a5f | Juan Quintela | } |
1229 | f11f6a5f | Juan Quintela | if (field->flags & VMS_POINTER) {
|
1230 | e61a1e0a | Juan Quintela | base_addr = *(void **)base_addr + field->start;
|
1231 | f11f6a5f | Juan Quintela | } |
1232 | f11f6a5f | Juan Quintela | for (i = 0; i < n_elems; i++) { |
1233 | e61a1e0a | Juan Quintela | void *addr = base_addr + size * i;
|
1234 | ec245e21 | Juan Quintela | |
1235 | 8595387e | Juan Quintela | if (field->flags & VMS_ARRAY_OF_POINTER) {
|
1236 | 8595387e | Juan Quintela | addr = *(void **)addr;
|
1237 | 8595387e | Juan Quintela | } |
1238 | f11f6a5f | Juan Quintela | if (field->flags & VMS_STRUCT) {
|
1239 | f11f6a5f | Juan Quintela | vmstate_save_state(f, field->vmsd, addr); |
1240 | f11f6a5f | Juan Quintela | } else {
|
1241 | e61a1e0a | Juan Quintela | field->info->put(f, addr, size); |
1242 | f11f6a5f | Juan Quintela | } |
1243 | ec245e21 | Juan Quintela | } |
1244 | dde0463b | Juan Quintela | } |
1245 | 9ed7d6ae | Juan Quintela | field++; |
1246 | 9ed7d6ae | Juan Quintela | } |
1247 | 9ed7d6ae | Juan Quintela | } |
1248 | 9ed7d6ae | Juan Quintela | |
1249 | 4082be4d | Juan Quintela | static int vmstate_load(QEMUFile *f, SaveStateEntry *se, int version_id) |
1250 | 4082be4d | Juan Quintela | { |
1251 | 9ed7d6ae | Juan Quintela | if (!se->vmsd) { /* Old style */ |
1252 | 9ed7d6ae | Juan Quintela | return se->load_state(f, se->opaque, version_id);
|
1253 | 9ed7d6ae | Juan Quintela | } |
1254 | 9ed7d6ae | Juan Quintela | return vmstate_load_state(f, se->vmsd, se->opaque, version_id);
|
1255 | 4082be4d | Juan Quintela | } |
1256 | 4082be4d | Juan Quintela | |
1257 | 4082be4d | Juan Quintela | static void vmstate_save(QEMUFile *f, SaveStateEntry *se) |
1258 | 4082be4d | Juan Quintela | { |
1259 | 9ed7d6ae | Juan Quintela | if (!se->vmsd) { /* Old style */ |
1260 | 9ed7d6ae | Juan Quintela | se->save_state(f, se->opaque); |
1261 | 9ed7d6ae | Juan Quintela | return;
|
1262 | 9ed7d6ae | Juan Quintela | } |
1263 | 9ed7d6ae | Juan Quintela | vmstate_save_state(f,se->vmsd, se->opaque); |
1264 | 4082be4d | Juan Quintela | } |
1265 | 4082be4d | Juan Quintela | |
1266 | a672b469 | aliguori | #define QEMU_VM_FILE_MAGIC 0x5145564d |
1267 | a672b469 | aliguori | #define QEMU_VM_FILE_VERSION_COMPAT 0x00000002 |
1268 | a672b469 | aliguori | #define QEMU_VM_FILE_VERSION 0x00000003 |
1269 | a672b469 | aliguori | |
1270 | a672b469 | aliguori | #define QEMU_VM_EOF 0x00 |
1271 | a672b469 | aliguori | #define QEMU_VM_SECTION_START 0x01 |
1272 | a672b469 | aliguori | #define QEMU_VM_SECTION_PART 0x02 |
1273 | a672b469 | aliguori | #define QEMU_VM_SECTION_END 0x03 |
1274 | a672b469 | aliguori | #define QEMU_VM_SECTION_FULL 0x04 |
1275 | a672b469 | aliguori | |
1276 | f327aa0c | Jan Kiszka | int qemu_savevm_state_begin(Monitor *mon, QEMUFile *f, int blk_enable, |
1277 | f327aa0c | Jan Kiszka | int shared)
|
1278 | a672b469 | aliguori | { |
1279 | a672b469 | aliguori | SaveStateEntry *se; |
1280 | a672b469 | aliguori | |
1281 | c163b5ca | lirans@il.ibm.com | QTAILQ_FOREACH(se, &savevm_handlers, entry) { |
1282 | c163b5ca | lirans@il.ibm.com | if(se->set_params == NULL) { |
1283 | c163b5ca | lirans@il.ibm.com | continue;
|
1284 | c163b5ca | lirans@il.ibm.com | } |
1285 | c163b5ca | lirans@il.ibm.com | se->set_params(blk_enable, shared, se->opaque); |
1286 | c163b5ca | lirans@il.ibm.com | } |
1287 | c163b5ca | lirans@il.ibm.com | |
1288 | a672b469 | aliguori | qemu_put_be32(f, QEMU_VM_FILE_MAGIC); |
1289 | a672b469 | aliguori | qemu_put_be32(f, QEMU_VM_FILE_VERSION); |
1290 | a672b469 | aliguori | |
1291 | 72cf2d4f | Blue Swirl | QTAILQ_FOREACH(se, &savevm_handlers, entry) { |
1292 | a672b469 | aliguori | int len;
|
1293 | a672b469 | aliguori | |
1294 | a672b469 | aliguori | if (se->save_live_state == NULL) |
1295 | a672b469 | aliguori | continue;
|
1296 | a672b469 | aliguori | |
1297 | a672b469 | aliguori | /* Section type */
|
1298 | a672b469 | aliguori | qemu_put_byte(f, QEMU_VM_SECTION_START); |
1299 | a672b469 | aliguori | qemu_put_be32(f, se->section_id); |
1300 | a672b469 | aliguori | |
1301 | a672b469 | aliguori | /* ID string */
|
1302 | a672b469 | aliguori | len = strlen(se->idstr); |
1303 | a672b469 | aliguori | qemu_put_byte(f, len); |
1304 | a672b469 | aliguori | qemu_put_buffer(f, (uint8_t *)se->idstr, len); |
1305 | a672b469 | aliguori | |
1306 | a672b469 | aliguori | qemu_put_be32(f, se->instance_id); |
1307 | a672b469 | aliguori | qemu_put_be32(f, se->version_id); |
1308 | a672b469 | aliguori | |
1309 | f327aa0c | Jan Kiszka | se->save_live_state(mon, f, QEMU_VM_SECTION_START, se->opaque); |
1310 | a672b469 | aliguori | } |
1311 | a672b469 | aliguori | |
1312 | 4ec7fcc7 | Jan Kiszka | if (qemu_file_has_error(f)) {
|
1313 | f327aa0c | Jan Kiszka | qemu_savevm_state_cancel(mon, f); |
1314 | a672b469 | aliguori | return -EIO;
|
1315 | 4ec7fcc7 | Jan Kiszka | } |
1316 | a672b469 | aliguori | |
1317 | a672b469 | aliguori | return 0; |
1318 | a672b469 | aliguori | } |
1319 | a672b469 | aliguori | |
1320 | f327aa0c | Jan Kiszka | int qemu_savevm_state_iterate(Monitor *mon, QEMUFile *f)
|
1321 | a672b469 | aliguori | { |
1322 | a672b469 | aliguori | SaveStateEntry *se; |
1323 | a672b469 | aliguori | int ret = 1; |
1324 | a672b469 | aliguori | |
1325 | 72cf2d4f | Blue Swirl | QTAILQ_FOREACH(se, &savevm_handlers, entry) { |
1326 | a672b469 | aliguori | if (se->save_live_state == NULL) |
1327 | a672b469 | aliguori | continue;
|
1328 | a672b469 | aliguori | |
1329 | a672b469 | aliguori | /* Section type */
|
1330 | a672b469 | aliguori | qemu_put_byte(f, QEMU_VM_SECTION_PART); |
1331 | a672b469 | aliguori | qemu_put_be32(f, se->section_id); |
1332 | a672b469 | aliguori | |
1333 | 90697be8 | Jan Kiszka | ret = se->save_live_state(mon, f, QEMU_VM_SECTION_PART, se->opaque); |
1334 | 90697be8 | Jan Kiszka | if (!ret) {
|
1335 | 90697be8 | Jan Kiszka | /* Do not proceed to the next vmstate before this one reported
|
1336 | 90697be8 | Jan Kiszka | completion of the current stage. This serializes the migration
|
1337 | 90697be8 | Jan Kiszka | and reduces the probability that a faster changing state is
|
1338 | 90697be8 | Jan Kiszka | synchronized over and over again. */
|
1339 | 90697be8 | Jan Kiszka | break;
|
1340 | 90697be8 | Jan Kiszka | } |
1341 | a672b469 | aliguori | } |
1342 | a672b469 | aliguori | |
1343 | a672b469 | aliguori | if (ret)
|
1344 | a672b469 | aliguori | return 1; |
1345 | a672b469 | aliguori | |
1346 | 4ec7fcc7 | Jan Kiszka | if (qemu_file_has_error(f)) {
|
1347 | f327aa0c | Jan Kiszka | qemu_savevm_state_cancel(mon, f); |
1348 | a672b469 | aliguori | return -EIO;
|
1349 | 4ec7fcc7 | Jan Kiszka | } |
1350 | a672b469 | aliguori | |
1351 | a672b469 | aliguori | return 0; |
1352 | a672b469 | aliguori | } |
1353 | a672b469 | aliguori | |
1354 | f327aa0c | Jan Kiszka | int qemu_savevm_state_complete(Monitor *mon, QEMUFile *f)
|
1355 | a672b469 | aliguori | { |
1356 | a672b469 | aliguori | SaveStateEntry *se; |
1357 | a672b469 | aliguori | |
1358 | ea375f9a | Jan Kiszka | cpu_synchronize_all_states(); |
1359 | ea375f9a | Jan Kiszka | |
1360 | 72cf2d4f | Blue Swirl | QTAILQ_FOREACH(se, &savevm_handlers, entry) { |
1361 | a672b469 | aliguori | if (se->save_live_state == NULL) |
1362 | a672b469 | aliguori | continue;
|
1363 | a672b469 | aliguori | |
1364 | a672b469 | aliguori | /* Section type */
|
1365 | a672b469 | aliguori | qemu_put_byte(f, QEMU_VM_SECTION_END); |
1366 | a672b469 | aliguori | qemu_put_be32(f, se->section_id); |
1367 | a672b469 | aliguori | |
1368 | f327aa0c | Jan Kiszka | se->save_live_state(mon, f, QEMU_VM_SECTION_END, se->opaque); |
1369 | a672b469 | aliguori | } |
1370 | a672b469 | aliguori | |
1371 | 72cf2d4f | Blue Swirl | QTAILQ_FOREACH(se, &savevm_handlers, entry) { |
1372 | a672b469 | aliguori | int len;
|
1373 | a672b469 | aliguori | |
1374 | 9ed7d6ae | Juan Quintela | if (se->save_state == NULL && se->vmsd == NULL) |
1375 | a672b469 | aliguori | continue;
|
1376 | a672b469 | aliguori | |
1377 | a672b469 | aliguori | /* Section type */
|
1378 | a672b469 | aliguori | qemu_put_byte(f, QEMU_VM_SECTION_FULL); |
1379 | a672b469 | aliguori | qemu_put_be32(f, se->section_id); |
1380 | a672b469 | aliguori | |
1381 | a672b469 | aliguori | /* ID string */
|
1382 | a672b469 | aliguori | len = strlen(se->idstr); |
1383 | a672b469 | aliguori | qemu_put_byte(f, len); |
1384 | a672b469 | aliguori | qemu_put_buffer(f, (uint8_t *)se->idstr, len); |
1385 | a672b469 | aliguori | |
1386 | a672b469 | aliguori | qemu_put_be32(f, se->instance_id); |
1387 | a672b469 | aliguori | qemu_put_be32(f, se->version_id); |
1388 | a672b469 | aliguori | |
1389 | 4082be4d | Juan Quintela | vmstate_save(f, se); |
1390 | a672b469 | aliguori | } |
1391 | a672b469 | aliguori | |
1392 | a672b469 | aliguori | qemu_put_byte(f, QEMU_VM_EOF); |
1393 | a672b469 | aliguori | |
1394 | a672b469 | aliguori | if (qemu_file_has_error(f))
|
1395 | a672b469 | aliguori | return -EIO;
|
1396 | a672b469 | aliguori | |
1397 | a672b469 | aliguori | return 0; |
1398 | a672b469 | aliguori | } |
1399 | a672b469 | aliguori | |
1400 | f327aa0c | Jan Kiszka | void qemu_savevm_state_cancel(Monitor *mon, QEMUFile *f)
|
1401 | 4ec7fcc7 | Jan Kiszka | { |
1402 | 4ec7fcc7 | Jan Kiszka | SaveStateEntry *se; |
1403 | 4ec7fcc7 | Jan Kiszka | |
1404 | 4ec7fcc7 | Jan Kiszka | QTAILQ_FOREACH(se, &savevm_handlers, entry) { |
1405 | 4ec7fcc7 | Jan Kiszka | if (se->save_live_state) {
|
1406 | f327aa0c | Jan Kiszka | se->save_live_state(mon, f, -1, se->opaque);
|
1407 | 4ec7fcc7 | Jan Kiszka | } |
1408 | 4ec7fcc7 | Jan Kiszka | } |
1409 | 4ec7fcc7 | Jan Kiszka | } |
1410 | 4ec7fcc7 | Jan Kiszka | |
1411 | f327aa0c | Jan Kiszka | static int qemu_savevm_state(Monitor *mon, QEMUFile *f) |
1412 | a672b469 | aliguori | { |
1413 | a672b469 | aliguori | int saved_vm_running;
|
1414 | a672b469 | aliguori | int ret;
|
1415 | a672b469 | aliguori | |
1416 | a672b469 | aliguori | saved_vm_running = vm_running; |
1417 | a672b469 | aliguori | vm_stop(0);
|
1418 | a672b469 | aliguori | |
1419 | a672b469 | aliguori | bdrv_flush_all(); |
1420 | a672b469 | aliguori | |
1421 | f327aa0c | Jan Kiszka | ret = qemu_savevm_state_begin(mon, f, 0, 0); |
1422 | a672b469 | aliguori | if (ret < 0) |
1423 | a672b469 | aliguori | goto out;
|
1424 | a672b469 | aliguori | |
1425 | a672b469 | aliguori | do {
|
1426 | f327aa0c | Jan Kiszka | ret = qemu_savevm_state_iterate(mon, f); |
1427 | a672b469 | aliguori | if (ret < 0) |
1428 | a672b469 | aliguori | goto out;
|
1429 | a672b469 | aliguori | } while (ret == 0); |
1430 | a672b469 | aliguori | |
1431 | f327aa0c | Jan Kiszka | ret = qemu_savevm_state_complete(mon, f); |
1432 | a672b469 | aliguori | |
1433 | a672b469 | aliguori | out:
|
1434 | a672b469 | aliguori | if (qemu_file_has_error(f))
|
1435 | a672b469 | aliguori | ret = -EIO; |
1436 | a672b469 | aliguori | |
1437 | a672b469 | aliguori | if (!ret && saved_vm_running)
|
1438 | a672b469 | aliguori | vm_start(); |
1439 | a672b469 | aliguori | |
1440 | a672b469 | aliguori | return ret;
|
1441 | a672b469 | aliguori | } |
1442 | a672b469 | aliguori | |
1443 | a672b469 | aliguori | static SaveStateEntry *find_se(const char *idstr, int instance_id) |
1444 | a672b469 | aliguori | { |
1445 | a672b469 | aliguori | SaveStateEntry *se; |
1446 | a672b469 | aliguori | |
1447 | 72cf2d4f | Blue Swirl | QTAILQ_FOREACH(se, &savevm_handlers, entry) { |
1448 | a672b469 | aliguori | if (!strcmp(se->idstr, idstr) &&
|
1449 | 4d2ffa08 | Jan Kiszka | (instance_id == se->instance_id || |
1450 | 4d2ffa08 | Jan Kiszka | instance_id == se->alias_id)) |
1451 | a672b469 | aliguori | return se;
|
1452 | a672b469 | aliguori | } |
1453 | a672b469 | aliguori | return NULL; |
1454 | a672b469 | aliguori | } |
1455 | a672b469 | aliguori | |
1456 | a672b469 | aliguori | typedef struct LoadStateEntry { |
1457 | 72cf2d4f | Blue Swirl | QLIST_ENTRY(LoadStateEntry) entry; |
1458 | a672b469 | aliguori | SaveStateEntry *se; |
1459 | a672b469 | aliguori | int section_id;
|
1460 | a672b469 | aliguori | int version_id;
|
1461 | a672b469 | aliguori | } LoadStateEntry; |
1462 | a672b469 | aliguori | |
1463 | a672b469 | aliguori | int qemu_loadvm_state(QEMUFile *f)
|
1464 | a672b469 | aliguori | { |
1465 | 72cf2d4f | Blue Swirl | QLIST_HEAD(, LoadStateEntry) loadvm_handlers = |
1466 | 72cf2d4f | Blue Swirl | QLIST_HEAD_INITIALIZER(loadvm_handlers); |
1467 | f4dbb8dd | Juan Quintela | LoadStateEntry *le, *new_le; |
1468 | a672b469 | aliguori | uint8_t section_type; |
1469 | a672b469 | aliguori | unsigned int v; |
1470 | a672b469 | aliguori | int ret;
|
1471 | a672b469 | aliguori | |
1472 | a672b469 | aliguori | v = qemu_get_be32(f); |
1473 | a672b469 | aliguori | if (v != QEMU_VM_FILE_MAGIC)
|
1474 | a672b469 | aliguori | return -EINVAL;
|
1475 | a672b469 | aliguori | |
1476 | a672b469 | aliguori | v = qemu_get_be32(f); |
1477 | bbfe1408 | Juan Quintela | if (v == QEMU_VM_FILE_VERSION_COMPAT) {
|
1478 | bbfe1408 | Juan Quintela | fprintf(stderr, "SaveVM v2 format is obsolete and don't work anymore\n");
|
1479 | bbfe1408 | Juan Quintela | return -ENOTSUP;
|
1480 | bbfe1408 | Juan Quintela | } |
1481 | a672b469 | aliguori | if (v != QEMU_VM_FILE_VERSION)
|
1482 | a672b469 | aliguori | return -ENOTSUP;
|
1483 | a672b469 | aliguori | |
1484 | a672b469 | aliguori | while ((section_type = qemu_get_byte(f)) != QEMU_VM_EOF) {
|
1485 | a672b469 | aliguori | uint32_t instance_id, version_id, section_id; |
1486 | a672b469 | aliguori | SaveStateEntry *se; |
1487 | a672b469 | aliguori | char idstr[257]; |
1488 | a672b469 | aliguori | int len;
|
1489 | a672b469 | aliguori | |
1490 | a672b469 | aliguori | switch (section_type) {
|
1491 | a672b469 | aliguori | case QEMU_VM_SECTION_START:
|
1492 | a672b469 | aliguori | case QEMU_VM_SECTION_FULL:
|
1493 | a672b469 | aliguori | /* Read section start */
|
1494 | a672b469 | aliguori | section_id = qemu_get_be32(f); |
1495 | a672b469 | aliguori | len = qemu_get_byte(f); |
1496 | a672b469 | aliguori | qemu_get_buffer(f, (uint8_t *)idstr, len); |
1497 | a672b469 | aliguori | idstr[len] = 0;
|
1498 | a672b469 | aliguori | instance_id = qemu_get_be32(f); |
1499 | a672b469 | aliguori | version_id = qemu_get_be32(f); |
1500 | a672b469 | aliguori | |
1501 | a672b469 | aliguori | /* Find savevm section */
|
1502 | a672b469 | aliguori | se = find_se(idstr, instance_id); |
1503 | a672b469 | aliguori | if (se == NULL) { |
1504 | a672b469 | aliguori | fprintf(stderr, "Unknown savevm section or instance '%s' %d\n", idstr, instance_id);
|
1505 | a672b469 | aliguori | ret = -EINVAL; |
1506 | a672b469 | aliguori | goto out;
|
1507 | a672b469 | aliguori | } |
1508 | a672b469 | aliguori | |
1509 | a672b469 | aliguori | /* Validate version */
|
1510 | a672b469 | aliguori | if (version_id > se->version_id) {
|
1511 | a672b469 | aliguori | fprintf(stderr, "savevm: unsupported version %d for '%s' v%d\n",
|
1512 | a672b469 | aliguori | version_id, idstr, se->version_id); |
1513 | a672b469 | aliguori | ret = -EINVAL; |
1514 | a672b469 | aliguori | goto out;
|
1515 | a672b469 | aliguori | } |
1516 | a672b469 | aliguori | |
1517 | a672b469 | aliguori | /* Add entry */
|
1518 | a672b469 | aliguori | le = qemu_mallocz(sizeof(*le));
|
1519 | a672b469 | aliguori | |
1520 | a672b469 | aliguori | le->se = se; |
1521 | a672b469 | aliguori | le->section_id = section_id; |
1522 | a672b469 | aliguori | le->version_id = version_id; |
1523 | 72cf2d4f | Blue Swirl | QLIST_INSERT_HEAD(&loadvm_handlers, le, entry); |
1524 | a672b469 | aliguori | |
1525 | 4082be4d | Juan Quintela | ret = vmstate_load(f, le->se, le->version_id); |
1526 | b5a22e4a | Juan Quintela | if (ret < 0) { |
1527 | b5a22e4a | Juan Quintela | fprintf(stderr, "qemu: warning: error while loading state for instance 0x%x of device '%s'\n",
|
1528 | b5a22e4a | Juan Quintela | instance_id, idstr); |
1529 | b5a22e4a | Juan Quintela | goto out;
|
1530 | b5a22e4a | Juan Quintela | } |
1531 | a672b469 | aliguori | break;
|
1532 | a672b469 | aliguori | case QEMU_VM_SECTION_PART:
|
1533 | a672b469 | aliguori | case QEMU_VM_SECTION_END:
|
1534 | a672b469 | aliguori | section_id = qemu_get_be32(f); |
1535 | a672b469 | aliguori | |
1536 | 72cf2d4f | Blue Swirl | QLIST_FOREACH(le, &loadvm_handlers, entry) { |
1537 | f4dbb8dd | Juan Quintela | if (le->section_id == section_id) {
|
1538 | f4dbb8dd | Juan Quintela | break;
|
1539 | f4dbb8dd | Juan Quintela | } |
1540 | f4dbb8dd | Juan Quintela | } |
1541 | a672b469 | aliguori | if (le == NULL) { |
1542 | a672b469 | aliguori | fprintf(stderr, "Unknown savevm section %d\n", section_id);
|
1543 | a672b469 | aliguori | ret = -EINVAL; |
1544 | a672b469 | aliguori | goto out;
|
1545 | a672b469 | aliguori | } |
1546 | a672b469 | aliguori | |
1547 | 4082be4d | Juan Quintela | ret = vmstate_load(f, le->se, le->version_id); |
1548 | b5a22e4a | Juan Quintela | if (ret < 0) { |
1549 | b5a22e4a | Juan Quintela | fprintf(stderr, "qemu: warning: error while loading state section id %d\n",
|
1550 | b5a22e4a | Juan Quintela | section_id); |
1551 | b5a22e4a | Juan Quintela | goto out;
|
1552 | b5a22e4a | Juan Quintela | } |
1553 | a672b469 | aliguori | break;
|
1554 | a672b469 | aliguori | default:
|
1555 | a672b469 | aliguori | fprintf(stderr, "Unknown savevm section type %d\n", section_type);
|
1556 | a672b469 | aliguori | ret = -EINVAL; |
1557 | a672b469 | aliguori | goto out;
|
1558 | a672b469 | aliguori | } |
1559 | a672b469 | aliguori | } |
1560 | a672b469 | aliguori | |
1561 | ea375f9a | Jan Kiszka | cpu_synchronize_all_post_init(); |
1562 | ea375f9a | Jan Kiszka | |
1563 | a672b469 | aliguori | ret = 0;
|
1564 | a672b469 | aliguori | |
1565 | a672b469 | aliguori | out:
|
1566 | 72cf2d4f | Blue Swirl | QLIST_FOREACH_SAFE(le, &loadvm_handlers, entry, new_le) { |
1567 | 72cf2d4f | Blue Swirl | QLIST_REMOVE(le, entry); |
1568 | a672b469 | aliguori | qemu_free(le); |
1569 | a672b469 | aliguori | } |
1570 | a672b469 | aliguori | |
1571 | a672b469 | aliguori | if (qemu_file_has_error(f))
|
1572 | a672b469 | aliguori | ret = -EIO; |
1573 | a672b469 | aliguori | |
1574 | a672b469 | aliguori | return ret;
|
1575 | a672b469 | aliguori | } |
1576 | a672b469 | aliguori | |
1577 | a672b469 | aliguori | /* device can contain snapshots */
|
1578 | a672b469 | aliguori | static int bdrv_can_snapshot(BlockDriverState *bs) |
1579 | a672b469 | aliguori | { |
1580 | a672b469 | aliguori | return (bs &&
|
1581 | a672b469 | aliguori | !bdrv_is_removable(bs) && |
1582 | a672b469 | aliguori | !bdrv_is_read_only(bs)); |
1583 | a672b469 | aliguori | } |
1584 | a672b469 | aliguori | |
1585 | a672b469 | aliguori | /* device must be snapshots in order to have a reliable snapshot */
|
1586 | a672b469 | aliguori | static int bdrv_has_snapshot(BlockDriverState *bs) |
1587 | a672b469 | aliguori | { |
1588 | a672b469 | aliguori | return (bs &&
|
1589 | a672b469 | aliguori | !bdrv_is_removable(bs) && |
1590 | a672b469 | aliguori | !bdrv_is_read_only(bs)); |
1591 | a672b469 | aliguori | } |
1592 | a672b469 | aliguori | |
1593 | a672b469 | aliguori | static BlockDriverState *get_bs_snapshots(void) |
1594 | a672b469 | aliguori | { |
1595 | a672b469 | aliguori | BlockDriverState *bs; |
1596 | 751c6a17 | Gerd Hoffmann | DriveInfo *dinfo; |
1597 | a672b469 | aliguori | |
1598 | a672b469 | aliguori | if (bs_snapshots)
|
1599 | a672b469 | aliguori | return bs_snapshots;
|
1600 | 72cf2d4f | Blue Swirl | QTAILQ_FOREACH(dinfo, &drives, next) { |
1601 | 751c6a17 | Gerd Hoffmann | bs = dinfo->bdrv; |
1602 | a672b469 | aliguori | if (bdrv_can_snapshot(bs))
|
1603 | a672b469 | aliguori | goto ok;
|
1604 | a672b469 | aliguori | } |
1605 | a672b469 | aliguori | return NULL; |
1606 | a672b469 | aliguori | ok:
|
1607 | a672b469 | aliguori | bs_snapshots = bs; |
1608 | a672b469 | aliguori | return bs;
|
1609 | a672b469 | aliguori | } |
1610 | a672b469 | aliguori | |
1611 | a672b469 | aliguori | static int bdrv_snapshot_find(BlockDriverState *bs, QEMUSnapshotInfo *sn_info, |
1612 | a672b469 | aliguori | const char *name) |
1613 | a672b469 | aliguori | { |
1614 | a672b469 | aliguori | QEMUSnapshotInfo *sn_tab, *sn; |
1615 | a672b469 | aliguori | int nb_sns, i, ret;
|
1616 | a672b469 | aliguori | |
1617 | a672b469 | aliguori | ret = -ENOENT; |
1618 | a672b469 | aliguori | nb_sns = bdrv_snapshot_list(bs, &sn_tab); |
1619 | a672b469 | aliguori | if (nb_sns < 0) |
1620 | a672b469 | aliguori | return ret;
|
1621 | a672b469 | aliguori | for(i = 0; i < nb_sns; i++) { |
1622 | a672b469 | aliguori | sn = &sn_tab[i]; |
1623 | a672b469 | aliguori | if (!strcmp(sn->id_str, name) || !strcmp(sn->name, name)) {
|
1624 | a672b469 | aliguori | *sn_info = *sn; |
1625 | a672b469 | aliguori | ret = 0;
|
1626 | a672b469 | aliguori | break;
|
1627 | a672b469 | aliguori | } |
1628 | a672b469 | aliguori | } |
1629 | a672b469 | aliguori | qemu_free(sn_tab); |
1630 | a672b469 | aliguori | return ret;
|
1631 | a672b469 | aliguori | } |
1632 | a672b469 | aliguori | |
1633 | cb499fb2 | Kevin Wolf | /*
|
1634 | cb499fb2 | Kevin Wolf | * Deletes snapshots of a given name in all opened images.
|
1635 | cb499fb2 | Kevin Wolf | */
|
1636 | cb499fb2 | Kevin Wolf | static int del_existing_snapshots(Monitor *mon, const char *name) |
1637 | cb499fb2 | Kevin Wolf | { |
1638 | cb499fb2 | Kevin Wolf | BlockDriverState *bs; |
1639 | cb499fb2 | Kevin Wolf | DriveInfo *dinfo; |
1640 | cb499fb2 | Kevin Wolf | QEMUSnapshotInfo sn1, *snapshot = &sn1; |
1641 | cb499fb2 | Kevin Wolf | int ret;
|
1642 | cb499fb2 | Kevin Wolf | |
1643 | cb499fb2 | Kevin Wolf | QTAILQ_FOREACH(dinfo, &drives, next) { |
1644 | cb499fb2 | Kevin Wolf | bs = dinfo->bdrv; |
1645 | cb499fb2 | Kevin Wolf | if (bdrv_can_snapshot(bs) &&
|
1646 | cb499fb2 | Kevin Wolf | bdrv_snapshot_find(bs, snapshot, name) >= 0)
|
1647 | cb499fb2 | Kevin Wolf | { |
1648 | cb499fb2 | Kevin Wolf | ret = bdrv_snapshot_delete(bs, name); |
1649 | cb499fb2 | Kevin Wolf | if (ret < 0) { |
1650 | cb499fb2 | Kevin Wolf | monitor_printf(mon, |
1651 | cb499fb2 | Kevin Wolf | "Error while deleting snapshot on '%s'\n",
|
1652 | cb499fb2 | Kevin Wolf | bdrv_get_device_name(bs)); |
1653 | cb499fb2 | Kevin Wolf | return -1; |
1654 | cb499fb2 | Kevin Wolf | } |
1655 | cb499fb2 | Kevin Wolf | } |
1656 | cb499fb2 | Kevin Wolf | } |
1657 | cb499fb2 | Kevin Wolf | |
1658 | cb499fb2 | Kevin Wolf | return 0; |
1659 | cb499fb2 | Kevin Wolf | } |
1660 | cb499fb2 | Kevin Wolf | |
1661 | d54908a5 | Luiz Capitulino | void do_savevm(Monitor *mon, const QDict *qdict) |
1662 | a672b469 | aliguori | { |
1663 | 751c6a17 | Gerd Hoffmann | DriveInfo *dinfo; |
1664 | a672b469 | aliguori | BlockDriverState *bs, *bs1; |
1665 | a672b469 | aliguori | QEMUSnapshotInfo sn1, *sn = &sn1, old_sn1, *old_sn = &old_sn1; |
1666 | cb499fb2 | Kevin Wolf | int ret;
|
1667 | a672b469 | aliguori | QEMUFile *f; |
1668 | a672b469 | aliguori | int saved_vm_running;
|
1669 | 2d22b18f | aliguori | uint32_t vm_state_size; |
1670 | a672b469 | aliguori | #ifdef _WIN32
|
1671 | a672b469 | aliguori | struct _timeb tb;
|
1672 | a672b469 | aliguori | #else
|
1673 | a672b469 | aliguori | struct timeval tv;
|
1674 | a672b469 | aliguori | #endif
|
1675 | d54908a5 | Luiz Capitulino | const char *name = qdict_get_try_str(qdict, "name"); |
1676 | a672b469 | aliguori | |
1677 | a672b469 | aliguori | bs = get_bs_snapshots(); |
1678 | a672b469 | aliguori | if (!bs) {
|
1679 | 376253ec | aliguori | monitor_printf(mon, "No block device can accept snapshots\n");
|
1680 | a672b469 | aliguori | return;
|
1681 | a672b469 | aliguori | } |
1682 | a672b469 | aliguori | |
1683 | a672b469 | aliguori | /* ??? Should this occur after vm_stop? */
|
1684 | a672b469 | aliguori | qemu_aio_flush(); |
1685 | a672b469 | aliguori | |
1686 | a672b469 | aliguori | saved_vm_running = vm_running; |
1687 | a672b469 | aliguori | vm_stop(0);
|
1688 | a672b469 | aliguori | |
1689 | cb499fb2 | Kevin Wolf | memset(sn, 0, sizeof(*sn)); |
1690 | a672b469 | aliguori | if (name) {
|
1691 | a672b469 | aliguori | ret = bdrv_snapshot_find(bs, old_sn, name); |
1692 | a672b469 | aliguori | if (ret >= 0) { |
1693 | cb499fb2 | Kevin Wolf | pstrcpy(sn->name, sizeof(sn->name), old_sn->name);
|
1694 | cb499fb2 | Kevin Wolf | pstrcpy(sn->id_str, sizeof(sn->id_str), old_sn->id_str);
|
1695 | cb499fb2 | Kevin Wolf | } else {
|
1696 | a672b469 | aliguori | pstrcpy(sn->name, sizeof(sn->name), name);
|
1697 | cb499fb2 | Kevin Wolf | } |
1698 | a672b469 | aliguori | } |
1699 | a672b469 | aliguori | |
1700 | a672b469 | aliguori | /* fill auxiliary fields */
|
1701 | a672b469 | aliguori | #ifdef _WIN32
|
1702 | a672b469 | aliguori | _ftime(&tb); |
1703 | a672b469 | aliguori | sn->date_sec = tb.time; |
1704 | a672b469 | aliguori | sn->date_nsec = tb.millitm * 1000000;
|
1705 | a672b469 | aliguori | #else
|
1706 | a672b469 | aliguori | gettimeofday(&tv, NULL);
|
1707 | a672b469 | aliguori | sn->date_sec = tv.tv_sec; |
1708 | a672b469 | aliguori | sn->date_nsec = tv.tv_usec * 1000;
|
1709 | a672b469 | aliguori | #endif
|
1710 | a672b469 | aliguori | sn->vm_clock_nsec = qemu_get_clock(vm_clock); |
1711 | a672b469 | aliguori | |
1712 | cb499fb2 | Kevin Wolf | /* Delete old snapshots of the same name */
|
1713 | f139a412 | Marcelo Tosatti | if (name && del_existing_snapshots(mon, name) < 0) { |
1714 | cb499fb2 | Kevin Wolf | goto the_end;
|
1715 | cb499fb2 | Kevin Wolf | } |
1716 | cb499fb2 | Kevin Wolf | |
1717 | a672b469 | aliguori | /* save the VM state */
|
1718 | 45566e9c | Christoph Hellwig | f = qemu_fopen_bdrv(bs, 1);
|
1719 | a672b469 | aliguori | if (!f) {
|
1720 | 376253ec | aliguori | monitor_printf(mon, "Could not open VM state file\n");
|
1721 | a672b469 | aliguori | goto the_end;
|
1722 | a672b469 | aliguori | } |
1723 | f327aa0c | Jan Kiszka | ret = qemu_savevm_state(mon, f); |
1724 | 2d22b18f | aliguori | vm_state_size = qemu_ftell(f); |
1725 | a672b469 | aliguori | qemu_fclose(f); |
1726 | a672b469 | aliguori | if (ret < 0) { |
1727 | 376253ec | aliguori | monitor_printf(mon, "Error %d while writing VM\n", ret);
|
1728 | a672b469 | aliguori | goto the_end;
|
1729 | a672b469 | aliguori | } |
1730 | a672b469 | aliguori | |
1731 | a672b469 | aliguori | /* create the snapshots */
|
1732 | a672b469 | aliguori | |
1733 | 72cf2d4f | Blue Swirl | QTAILQ_FOREACH(dinfo, &drives, next) { |
1734 | 751c6a17 | Gerd Hoffmann | bs1 = dinfo->bdrv; |
1735 | a672b469 | aliguori | if (bdrv_has_snapshot(bs1)) {
|
1736 | 2d22b18f | aliguori | /* Write VM state size only to the image that contains the state */
|
1737 | 2d22b18f | aliguori | sn->vm_state_size = (bs == bs1 ? vm_state_size : 0);
|
1738 | a672b469 | aliguori | ret = bdrv_snapshot_create(bs1, sn); |
1739 | a672b469 | aliguori | if (ret < 0) { |
1740 | 376253ec | aliguori | monitor_printf(mon, "Error while creating snapshot on '%s'\n",
|
1741 | 376253ec | aliguori | bdrv_get_device_name(bs1)); |
1742 | a672b469 | aliguori | } |
1743 | a672b469 | aliguori | } |
1744 | a672b469 | aliguori | } |
1745 | a672b469 | aliguori | |
1746 | a672b469 | aliguori | the_end:
|
1747 | a672b469 | aliguori | if (saved_vm_running)
|
1748 | a672b469 | aliguori | vm_start(); |
1749 | a672b469 | aliguori | } |
1750 | a672b469 | aliguori | |
1751 | 03cd4655 | Markus Armbruster | int load_vmstate(const char *name) |
1752 | a672b469 | aliguori | { |
1753 | 751c6a17 | Gerd Hoffmann | DriveInfo *dinfo; |
1754 | a672b469 | aliguori | BlockDriverState *bs, *bs1; |
1755 | 2d22b18f | aliguori | QEMUSnapshotInfo sn; |
1756 | a672b469 | aliguori | QEMUFile *f; |
1757 | 751c6a17 | Gerd Hoffmann | int ret;
|
1758 | a672b469 | aliguori | |
1759 | a672b469 | aliguori | bs = get_bs_snapshots(); |
1760 | a672b469 | aliguori | if (!bs) {
|
1761 | 1ecda02b | Markus Armbruster | error_report("No block device supports snapshots");
|
1762 | 05f2401e | Juan Quintela | return -EINVAL;
|
1763 | a672b469 | aliguori | } |
1764 | a672b469 | aliguori | |
1765 | a672b469 | aliguori | /* Flush all IO requests so they don't interfere with the new state. */
|
1766 | a672b469 | aliguori | qemu_aio_flush(); |
1767 | a672b469 | aliguori | |
1768 | 72cf2d4f | Blue Swirl | QTAILQ_FOREACH(dinfo, &drives, next) { |
1769 | 751c6a17 | Gerd Hoffmann | bs1 = dinfo->bdrv; |
1770 | a672b469 | aliguori | if (bdrv_has_snapshot(bs1)) {
|
1771 | a672b469 | aliguori | ret = bdrv_snapshot_goto(bs1, name); |
1772 | a672b469 | aliguori | if (ret < 0) { |
1773 | a672b469 | aliguori | switch(ret) {
|
1774 | a672b469 | aliguori | case -ENOTSUP:
|
1775 | 1ecda02b | Markus Armbruster | error_report("%sSnapshots not supported on device '%s'",
|
1776 | 1ecda02b | Markus Armbruster | bs != bs1 ? "Warning: " : "", |
1777 | 1ecda02b | Markus Armbruster | bdrv_get_device_name(bs1)); |
1778 | a672b469 | aliguori | break;
|
1779 | a672b469 | aliguori | case -ENOENT:
|
1780 | 1ecda02b | Markus Armbruster | error_report("%sCould not find snapshot '%s' on device '%s'",
|
1781 | 1ecda02b | Markus Armbruster | bs != bs1 ? "Warning: " : "", |
1782 | 1ecda02b | Markus Armbruster | name, bdrv_get_device_name(bs1)); |
1783 | a672b469 | aliguori | break;
|
1784 | a672b469 | aliguori | default:
|
1785 | 1ecda02b | Markus Armbruster | error_report("%sError %d while activating snapshot on '%s'",
|
1786 | 1ecda02b | Markus Armbruster | bs != bs1 ? "Warning: " : "", |
1787 | 1ecda02b | Markus Armbruster | ret, bdrv_get_device_name(bs1)); |
1788 | a672b469 | aliguori | break;
|
1789 | a672b469 | aliguori | } |
1790 | a672b469 | aliguori | /* fatal on snapshot block device */
|
1791 | a672b469 | aliguori | if (bs == bs1)
|
1792 | 05f2401e | Juan Quintela | return 0; |
1793 | a672b469 | aliguori | } |
1794 | a672b469 | aliguori | } |
1795 | a672b469 | aliguori | } |
1796 | a672b469 | aliguori | |
1797 | 2d22b18f | aliguori | /* Don't even try to load empty VM states */
|
1798 | 2d22b18f | aliguori | ret = bdrv_snapshot_find(bs, &sn, name); |
1799 | 2d22b18f | aliguori | if ((ret >= 0) && (sn.vm_state_size == 0)) |
1800 | 05f2401e | Juan Quintela | return -EINVAL;
|
1801 | 2d22b18f | aliguori | |
1802 | a672b469 | aliguori | /* restore the VM state */
|
1803 | 45566e9c | Christoph Hellwig | f = qemu_fopen_bdrv(bs, 0);
|
1804 | a672b469 | aliguori | if (!f) {
|
1805 | 1ecda02b | Markus Armbruster | error_report("Could not open VM state file");
|
1806 | 05f2401e | Juan Quintela | return -EINVAL;
|
1807 | a672b469 | aliguori | } |
1808 | a672b469 | aliguori | ret = qemu_loadvm_state(f); |
1809 | a672b469 | aliguori | qemu_fclose(f); |
1810 | a672b469 | aliguori | if (ret < 0) { |
1811 | 1ecda02b | Markus Armbruster | error_report("Error %d while loading VM state", ret);
|
1812 | 05f2401e | Juan Quintela | return ret;
|
1813 | a672b469 | aliguori | } |
1814 | 05f2401e | Juan Quintela | return 0; |
1815 | 7b630349 | Juan Quintela | } |
1816 | 7b630349 | Juan Quintela | |
1817 | d54908a5 | Luiz Capitulino | void do_delvm(Monitor *mon, const QDict *qdict) |
1818 | a672b469 | aliguori | { |
1819 | 751c6a17 | Gerd Hoffmann | DriveInfo *dinfo; |
1820 | a672b469 | aliguori | BlockDriverState *bs, *bs1; |
1821 | 751c6a17 | Gerd Hoffmann | int ret;
|
1822 | d54908a5 | Luiz Capitulino | const char *name = qdict_get_str(qdict, "name"); |
1823 | a672b469 | aliguori | |
1824 | a672b469 | aliguori | bs = get_bs_snapshots(); |
1825 | a672b469 | aliguori | if (!bs) {
|
1826 | 376253ec | aliguori | monitor_printf(mon, "No block device supports snapshots\n");
|
1827 | a672b469 | aliguori | return;
|
1828 | a672b469 | aliguori | } |
1829 | a672b469 | aliguori | |
1830 | 72cf2d4f | Blue Swirl | QTAILQ_FOREACH(dinfo, &drives, next) { |
1831 | 751c6a17 | Gerd Hoffmann | bs1 = dinfo->bdrv; |
1832 | a672b469 | aliguori | if (bdrv_has_snapshot(bs1)) {
|
1833 | a672b469 | aliguori | ret = bdrv_snapshot_delete(bs1, name); |
1834 | a672b469 | aliguori | if (ret < 0) { |
1835 | a672b469 | aliguori | if (ret == -ENOTSUP)
|
1836 | 376253ec | aliguori | monitor_printf(mon, |
1837 | 376253ec | aliguori | "Snapshots not supported on device '%s'\n",
|
1838 | 376253ec | aliguori | bdrv_get_device_name(bs1)); |
1839 | a672b469 | aliguori | else
|
1840 | 376253ec | aliguori | monitor_printf(mon, "Error %d while deleting snapshot on "
|
1841 | 376253ec | aliguori | "'%s'\n", ret, bdrv_get_device_name(bs1));
|
1842 | a672b469 | aliguori | } |
1843 | a672b469 | aliguori | } |
1844 | a672b469 | aliguori | } |
1845 | a672b469 | aliguori | } |
1846 | a672b469 | aliguori | |
1847 | 376253ec | aliguori | void do_info_snapshots(Monitor *mon)
|
1848 | a672b469 | aliguori | { |
1849 | 751c6a17 | Gerd Hoffmann | DriveInfo *dinfo; |
1850 | a672b469 | aliguori | BlockDriverState *bs, *bs1; |
1851 | a672b469 | aliguori | QEMUSnapshotInfo *sn_tab, *sn; |
1852 | a672b469 | aliguori | int nb_sns, i;
|
1853 | a672b469 | aliguori | char buf[256]; |
1854 | a672b469 | aliguori | |
1855 | a672b469 | aliguori | bs = get_bs_snapshots(); |
1856 | a672b469 | aliguori | if (!bs) {
|
1857 | 376253ec | aliguori | monitor_printf(mon, "No available block device supports snapshots\n");
|
1858 | a672b469 | aliguori | return;
|
1859 | a672b469 | aliguori | } |
1860 | 376253ec | aliguori | monitor_printf(mon, "Snapshot devices:");
|
1861 | 72cf2d4f | Blue Swirl | QTAILQ_FOREACH(dinfo, &drives, next) { |
1862 | 751c6a17 | Gerd Hoffmann | bs1 = dinfo->bdrv; |
1863 | a672b469 | aliguori | if (bdrv_has_snapshot(bs1)) {
|
1864 | a672b469 | aliguori | if (bs == bs1)
|
1865 | 376253ec | aliguori | monitor_printf(mon, " %s", bdrv_get_device_name(bs1));
|
1866 | a672b469 | aliguori | } |
1867 | a672b469 | aliguori | } |
1868 | 376253ec | aliguori | monitor_printf(mon, "\n");
|
1869 | a672b469 | aliguori | |
1870 | a672b469 | aliguori | nb_sns = bdrv_snapshot_list(bs, &sn_tab); |
1871 | a672b469 | aliguori | if (nb_sns < 0) { |
1872 | 376253ec | aliguori | monitor_printf(mon, "bdrv_snapshot_list: error %d\n", nb_sns);
|
1873 | a672b469 | aliguori | return;
|
1874 | a672b469 | aliguori | } |
1875 | 376253ec | aliguori | monitor_printf(mon, "Snapshot list (from %s):\n",
|
1876 | 376253ec | aliguori | bdrv_get_device_name(bs)); |
1877 | 376253ec | aliguori | monitor_printf(mon, "%s\n", bdrv_snapshot_dump(buf, sizeof(buf), NULL)); |
1878 | a672b469 | aliguori | for(i = 0; i < nb_sns; i++) { |
1879 | a672b469 | aliguori | sn = &sn_tab[i]; |
1880 | 376253ec | aliguori | monitor_printf(mon, "%s\n", bdrv_snapshot_dump(buf, sizeof(buf), sn)); |
1881 | a672b469 | aliguori | } |
1882 | a672b469 | aliguori | qemu_free(sn_tab); |
1883 | a672b469 | aliguori | } |