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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 | 179a2c19 | blueswir1 | /* Needed early for HOST_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 | #if defined(__NetBSD__)
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46 | a672b469 | aliguori | #include <net/if_tap.h> |
47 | a672b469 | aliguori | #endif
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48 | a672b469 | aliguori | #ifdef __linux__
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49 | a672b469 | aliguori | #include <linux/if_tun.h> |
50 | a672b469 | aliguori | #endif
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51 | a672b469 | aliguori | #include <arpa/inet.h> |
52 | a672b469 | aliguori | #include <dirent.h> |
53 | a672b469 | aliguori | #include <netdb.h> |
54 | a672b469 | aliguori | #include <sys/select.h> |
55 | 179a2c19 | blueswir1 | #ifdef HOST_BSD
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56 | a672b469 | aliguori | #include <sys/stat.h> |
57 | c5e97233 | blueswir1 | #if defined(__FreeBSD__) || defined(__DragonFly__)
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58 | a672b469 | aliguori | #include <libutil.h> |
59 | a672b469 | aliguori | #else
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60 | a672b469 | aliguori | #include <util.h> |
61 | a672b469 | aliguori | #endif
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62 | a672b469 | aliguori | #elif defined (__GLIBC__) && defined (__FreeBSD_kernel__)
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63 | a672b469 | aliguori | #include <freebsd/stdlib.h> |
64 | a672b469 | aliguori | #else
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65 | a672b469 | aliguori | #ifdef __linux__
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66 | a672b469 | aliguori | #include <pty.h> |
67 | a672b469 | aliguori | #include <malloc.h> |
68 | a672b469 | aliguori | #include <linux/rtc.h> |
69 | a672b469 | aliguori | #endif
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70 | a672b469 | aliguori | #endif
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71 | a672b469 | aliguori | #endif
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72 | a672b469 | aliguori | |
73 | a672b469 | aliguori | #ifdef _WIN32
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74 | 49dc768d | aliguori | #include <windows.h> |
75 | a672b469 | aliguori | #include <malloc.h> |
76 | a672b469 | aliguori | #include <sys/timeb.h> |
77 | a672b469 | aliguori | #include <mmsystem.h> |
78 | a672b469 | aliguori | #define getopt_long_only getopt_long
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79 | a672b469 | aliguori | #define memalign(align, size) malloc(size)
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80 | a672b469 | aliguori | #endif
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81 | a672b469 | aliguori | |
82 | 511d2b14 | blueswir1 | #include "qemu-common.h" |
83 | 511d2b14 | blueswir1 | #include "hw/hw.h" |
84 | 511d2b14 | blueswir1 | #include "net.h" |
85 | 511d2b14 | blueswir1 | #include "monitor.h" |
86 | 511d2b14 | blueswir1 | #include "sysemu.h" |
87 | 511d2b14 | blueswir1 | #include "qemu-timer.h" |
88 | 511d2b14 | blueswir1 | #include "qemu-char.h" |
89 | 511d2b14 | blueswir1 | #include "block.h" |
90 | 511d2b14 | blueswir1 | #include "audio/audio.h" |
91 | 511d2b14 | blueswir1 | #include "migration.h" |
92 | 511d2b14 | blueswir1 | #include "qemu_socket.h" |
93 | 511d2b14 | blueswir1 | |
94 | a672b469 | aliguori | /* point to the block driver where the snapshots are managed */
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95 | a672b469 | aliguori | static BlockDriverState *bs_snapshots;
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96 | a672b469 | aliguori | |
97 | a672b469 | aliguori | #define SELF_ANNOUNCE_ROUNDS 5 |
98 | a672b469 | aliguori | #define ETH_P_EXPERIMENTAL 0x01F1 /* just a number */ |
99 | a672b469 | aliguori | //#define ETH_P_EXPERIMENTAL 0x0012 /* make it the size of the packet */
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100 | a672b469 | aliguori | #define EXPERIMENTAL_MAGIC 0xf1f23f4f |
101 | a672b469 | aliguori | |
102 | a672b469 | aliguori | static int announce_self_create(uint8_t *buf, |
103 | a672b469 | aliguori | uint8_t *mac_addr) |
104 | a672b469 | aliguori | { |
105 | a672b469 | aliguori | uint32_t magic = EXPERIMENTAL_MAGIC; |
106 | a672b469 | aliguori | uint16_t proto = htons(ETH_P_EXPERIMENTAL); |
107 | a672b469 | aliguori | |
108 | a672b469 | aliguori | /* FIXME: should we send a different packet (arp/rarp/ping)? */
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109 | a672b469 | aliguori | |
110 | 976305b7 | Gleb Natapov | memset(buf, 0, 64); |
111 | a672b469 | aliguori | memset(buf, 0xff, 6); /* h_dst */ |
112 | a672b469 | aliguori | memcpy(buf + 6, mac_addr, 6); /* h_src */ |
113 | a672b469 | aliguori | memcpy(buf + 12, &proto, 2); /* h_proto */ |
114 | a672b469 | aliguori | memcpy(buf + 14, &magic, 4); /* magic */ |
115 | a672b469 | aliguori | |
116 | 976305b7 | Gleb Natapov | return 64; /* len */ |
117 | a672b469 | aliguori | } |
118 | a672b469 | aliguori | |
119 | ed8b330b | Gleb Natapov | static void qemu_announce_self_once(void *opaque) |
120 | a672b469 | aliguori | { |
121 | ed8b330b | Gleb Natapov | int i, len;
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122 | a672b469 | aliguori | VLANState *vlan; |
123 | a672b469 | aliguori | VLANClientState *vc; |
124 | a672b469 | aliguori | uint8_t buf[256];
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125 | ed8b330b | Gleb Natapov | static int count = SELF_ANNOUNCE_ROUNDS; |
126 | ed8b330b | Gleb Natapov | QEMUTimer *timer = *(QEMUTimer **)opaque; |
127 | a672b469 | aliguori | |
128 | 3450df30 | aliguori | for (i = 0; i < MAX_NICS; i++) { |
129 | 3450df30 | aliguori | if (!nd_table[i].used)
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130 | 3450df30 | aliguori | continue;
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131 | a672b469 | aliguori | len = announce_self_create(buf, nd_table[i].macaddr); |
132 | a672b469 | aliguori | vlan = nd_table[i].vlan; |
133 | ed8b330b | Gleb Natapov | for(vc = vlan->first_client; vc != NULL; vc = vc->next) { |
134 | e3f5ec2b | Mark McLoughlin | vc->receive(vc, buf, len); |
135 | a672b469 | aliguori | } |
136 | a672b469 | aliguori | } |
137 | ed8b330b | Gleb Natapov | if (count--) {
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138 | ed8b330b | Gleb Natapov | qemu_mod_timer(timer, qemu_get_clock(rt_clock) + 100);
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139 | ed8b330b | Gleb Natapov | } else {
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140 | ed8b330b | Gleb Natapov | qemu_del_timer(timer); |
141 | ed8b330b | Gleb Natapov | qemu_free_timer(timer); |
142 | ed8b330b | Gleb Natapov | } |
143 | ed8b330b | Gleb Natapov | } |
144 | ed8b330b | Gleb Natapov | |
145 | ed8b330b | Gleb Natapov | void qemu_announce_self(void) |
146 | ed8b330b | Gleb Natapov | { |
147 | ed8b330b | Gleb Natapov | static QEMUTimer *timer;
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148 | ed8b330b | Gleb Natapov | timer = qemu_new_timer(rt_clock, qemu_announce_self_once, &timer); |
149 | ed8b330b | Gleb Natapov | qemu_announce_self_once(&timer); |
150 | a672b469 | aliguori | } |
151 | a672b469 | aliguori | |
152 | a672b469 | aliguori | /***********************************************************/
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153 | a672b469 | aliguori | /* savevm/loadvm support */
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154 | a672b469 | aliguori | |
155 | a672b469 | aliguori | #define IO_BUF_SIZE 32768 |
156 | a672b469 | aliguori | |
157 | a672b469 | aliguori | struct QEMUFile {
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158 | a672b469 | aliguori | QEMUFilePutBufferFunc *put_buffer; |
159 | a672b469 | aliguori | QEMUFileGetBufferFunc *get_buffer; |
160 | a672b469 | aliguori | QEMUFileCloseFunc *close; |
161 | a672b469 | aliguori | QEMUFileRateLimit *rate_limit; |
162 | 19629537 | Glauber Costa | QEMUFileSetRateLimit *set_rate_limit; |
163 | a672b469 | aliguori | void *opaque;
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164 | a672b469 | aliguori | int is_write;
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165 | a672b469 | aliguori | |
166 | a672b469 | aliguori | int64_t buf_offset; /* start of buffer when writing, end of buffer
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167 | a672b469 | aliguori | when reading */
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168 | a672b469 | aliguori | int buf_index;
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169 | a672b469 | aliguori | int buf_size; /* 0 when writing */ |
170 | a672b469 | aliguori | uint8_t buf[IO_BUF_SIZE]; |
171 | a672b469 | aliguori | |
172 | a672b469 | aliguori | int has_error;
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173 | a672b469 | aliguori | }; |
174 | a672b469 | aliguori | |
175 | a672b469 | aliguori | typedef struct QEMUFilePopen |
176 | a672b469 | aliguori | { |
177 | a672b469 | aliguori | FILE *popen_file; |
178 | a672b469 | aliguori | QEMUFile *file; |
179 | a672b469 | aliguori | } QEMUFilePopen; |
180 | a672b469 | aliguori | |
181 | a672b469 | aliguori | typedef struct QEMUFileSocket |
182 | a672b469 | aliguori | { |
183 | a672b469 | aliguori | int fd;
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184 | a672b469 | aliguori | QEMUFile *file; |
185 | a672b469 | aliguori | } QEMUFileSocket; |
186 | a672b469 | aliguori | |
187 | a672b469 | aliguori | static int socket_get_buffer(void *opaque, uint8_t *buf, int64_t pos, int size) |
188 | a672b469 | aliguori | { |
189 | a672b469 | aliguori | QEMUFileSocket *s = opaque; |
190 | a672b469 | aliguori | ssize_t len; |
191 | a672b469 | aliguori | |
192 | a672b469 | aliguori | do {
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193 | a672b469 | aliguori | len = recv(s->fd, buf, size, 0);
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194 | a672b469 | aliguori | } while (len == -1 && socket_error() == EINTR); |
195 | a672b469 | aliguori | |
196 | a672b469 | aliguori | if (len == -1) |
197 | a672b469 | aliguori | len = -socket_error(); |
198 | a672b469 | aliguori | |
199 | a672b469 | aliguori | return len;
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200 | a672b469 | aliguori | } |
201 | a672b469 | aliguori | |
202 | a672b469 | aliguori | static int socket_close(void *opaque) |
203 | a672b469 | aliguori | { |
204 | a672b469 | aliguori | QEMUFileSocket *s = opaque; |
205 | a672b469 | aliguori | qemu_free(s); |
206 | a672b469 | aliguori | return 0; |
207 | a672b469 | aliguori | } |
208 | a672b469 | aliguori | |
209 | a672b469 | aliguori | static int popen_put_buffer(void *opaque, const uint8_t *buf, int64_t pos, int size) |
210 | a672b469 | aliguori | { |
211 | a672b469 | aliguori | QEMUFilePopen *s = opaque; |
212 | a672b469 | aliguori | return fwrite(buf, 1, size, s->popen_file); |
213 | a672b469 | aliguori | } |
214 | a672b469 | aliguori | |
215 | a672b469 | aliguori | static int popen_get_buffer(void *opaque, uint8_t *buf, int64_t pos, int size) |
216 | a672b469 | aliguori | { |
217 | a672b469 | aliguori | QEMUFilePopen *s = opaque; |
218 | a672b469 | aliguori | return fread(buf, 1, size, s->popen_file); |
219 | a672b469 | aliguori | } |
220 | a672b469 | aliguori | |
221 | a672b469 | aliguori | static int popen_close(void *opaque) |
222 | a672b469 | aliguori | { |
223 | a672b469 | aliguori | QEMUFilePopen *s = opaque; |
224 | a672b469 | aliguori | pclose(s->popen_file); |
225 | a672b469 | aliguori | qemu_free(s); |
226 | a672b469 | aliguori | return 0; |
227 | a672b469 | aliguori | } |
228 | a672b469 | aliguori | |
229 | a672b469 | aliguori | QEMUFile *qemu_popen(FILE *popen_file, const char *mode) |
230 | a672b469 | aliguori | { |
231 | a672b469 | aliguori | QEMUFilePopen *s; |
232 | a672b469 | aliguori | |
233 | a672b469 | aliguori | if (popen_file == NULL || mode == NULL || (mode[0] != 'r' && mode[0] != 'w') || mode[1] != 0) { |
234 | a672b469 | aliguori | fprintf(stderr, "qemu_popen: Argument validity check failed\n");
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235 | a672b469 | aliguori | return NULL; |
236 | a672b469 | aliguori | } |
237 | a672b469 | aliguori | |
238 | a672b469 | aliguori | s = qemu_mallocz(sizeof(QEMUFilePopen));
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239 | a672b469 | aliguori | |
240 | a672b469 | aliguori | s->popen_file = popen_file; |
241 | a672b469 | aliguori | |
242 | a672b469 | aliguori | if(mode[0] == 'r') { |
243 | 19629537 | Glauber Costa | s->file = qemu_fopen_ops(s, NULL, popen_get_buffer, popen_close, NULL, NULL); |
244 | a672b469 | aliguori | } else {
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245 | 19629537 | Glauber Costa | s->file = qemu_fopen_ops(s, popen_put_buffer, NULL, popen_close, NULL, NULL); |
246 | a672b469 | aliguori | } |
247 | a672b469 | aliguori | return s->file;
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248 | a672b469 | aliguori | } |
249 | a672b469 | aliguori | |
250 | a672b469 | aliguori | QEMUFile *qemu_popen_cmd(const char *command, const char *mode) |
251 | a672b469 | aliguori | { |
252 | a672b469 | aliguori | FILE *popen_file; |
253 | a672b469 | aliguori | |
254 | a672b469 | aliguori | popen_file = popen(command, mode); |
255 | a672b469 | aliguori | if(popen_file == NULL) { |
256 | a672b469 | aliguori | return NULL; |
257 | a672b469 | aliguori | } |
258 | a672b469 | aliguori | |
259 | a672b469 | aliguori | return qemu_popen(popen_file, mode);
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260 | a672b469 | aliguori | } |
261 | a672b469 | aliguori | |
262 | 8a43b1ea | Chris Lalancette | int qemu_popen_fd(QEMUFile *f)
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263 | 8a43b1ea | Chris Lalancette | { |
264 | 8a43b1ea | Chris Lalancette | QEMUFilePopen *p; |
265 | 8a43b1ea | Chris Lalancette | int fd;
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266 | 8a43b1ea | Chris Lalancette | |
267 | 8a43b1ea | Chris Lalancette | p = (QEMUFilePopen *)f->opaque; |
268 | 8a43b1ea | Chris Lalancette | fd = fileno(p->popen_file); |
269 | 8a43b1ea | Chris Lalancette | |
270 | 8a43b1ea | Chris Lalancette | return fd;
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271 | 8a43b1ea | Chris Lalancette | } |
272 | 8a43b1ea | Chris Lalancette | |
273 | a672b469 | aliguori | QEMUFile *qemu_fopen_socket(int fd)
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274 | a672b469 | aliguori | { |
275 | a672b469 | aliguori | QEMUFileSocket *s = qemu_mallocz(sizeof(QEMUFileSocket));
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276 | a672b469 | aliguori | |
277 | a672b469 | aliguori | s->fd = fd; |
278 | 19629537 | Glauber Costa | s->file = qemu_fopen_ops(s, NULL, socket_get_buffer, socket_close, NULL, NULL); |
279 | a672b469 | aliguori | return s->file;
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280 | a672b469 | aliguori | } |
281 | a672b469 | aliguori | |
282 | a672b469 | aliguori | typedef struct QEMUFileStdio |
283 | a672b469 | aliguori | { |
284 | a672b469 | aliguori | FILE *outfile; |
285 | a672b469 | aliguori | } QEMUFileStdio; |
286 | a672b469 | aliguori | |
287 | a672b469 | aliguori | static int file_put_buffer(void *opaque, const uint8_t *buf, |
288 | a672b469 | aliguori | int64_t pos, int size)
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289 | a672b469 | aliguori | { |
290 | a672b469 | aliguori | QEMUFileStdio *s = opaque; |
291 | a672b469 | aliguori | fseek(s->outfile, pos, SEEK_SET); |
292 | a672b469 | aliguori | fwrite(buf, 1, size, s->outfile);
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293 | a672b469 | aliguori | return size;
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294 | a672b469 | aliguori | } |
295 | a672b469 | aliguori | |
296 | a672b469 | aliguori | static int file_get_buffer(void *opaque, uint8_t *buf, int64_t pos, int size) |
297 | a672b469 | aliguori | { |
298 | a672b469 | aliguori | QEMUFileStdio *s = opaque; |
299 | a672b469 | aliguori | fseek(s->outfile, pos, SEEK_SET); |
300 | a672b469 | aliguori | return fread(buf, 1, size, s->outfile); |
301 | a672b469 | aliguori | } |
302 | a672b469 | aliguori | |
303 | a672b469 | aliguori | static int file_close(void *opaque) |
304 | a672b469 | aliguori | { |
305 | a672b469 | aliguori | QEMUFileStdio *s = opaque; |
306 | a672b469 | aliguori | fclose(s->outfile); |
307 | a672b469 | aliguori | qemu_free(s); |
308 | a672b469 | aliguori | return 0; |
309 | a672b469 | aliguori | } |
310 | a672b469 | aliguori | |
311 | a672b469 | aliguori | QEMUFile *qemu_fopen(const char *filename, const char *mode) |
312 | a672b469 | aliguori | { |
313 | a672b469 | aliguori | QEMUFileStdio *s; |
314 | a672b469 | aliguori | |
315 | a672b469 | aliguori | s = qemu_mallocz(sizeof(QEMUFileStdio));
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316 | a672b469 | aliguori | |
317 | a672b469 | aliguori | s->outfile = fopen(filename, mode); |
318 | a672b469 | aliguori | if (!s->outfile)
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319 | a672b469 | aliguori | goto fail;
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320 | a672b469 | aliguori | |
321 | a672b469 | aliguori | if (!strcmp(mode, "wb")) |
322 | 19629537 | Glauber Costa | return qemu_fopen_ops(s, file_put_buffer, NULL, file_close, NULL, NULL); |
323 | a672b469 | aliguori | else if (!strcmp(mode, "rb")) |
324 | 19629537 | Glauber Costa | return qemu_fopen_ops(s, NULL, file_get_buffer, file_close, NULL, NULL); |
325 | a672b469 | aliguori | |
326 | a672b469 | aliguori | fail:
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327 | a672b469 | aliguori | if (s->outfile)
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328 | a672b469 | aliguori | fclose(s->outfile); |
329 | a672b469 | aliguori | qemu_free(s); |
330 | a672b469 | aliguori | return NULL; |
331 | a672b469 | aliguori | } |
332 | a672b469 | aliguori | |
333 | a672b469 | aliguori | typedef struct QEMUFileBdrv |
334 | a672b469 | aliguori | { |
335 | a672b469 | aliguori | BlockDriverState *bs; |
336 | a672b469 | aliguori | int64_t base_offset; |
337 | a672b469 | aliguori | } QEMUFileBdrv; |
338 | a672b469 | aliguori | |
339 | 178e08a5 | aliguori | static int block_put_buffer(void *opaque, const uint8_t *buf, |
340 | a672b469 | aliguori | int64_t pos, int size)
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341 | a672b469 | aliguori | { |
342 | a672b469 | aliguori | QEMUFileBdrv *s = opaque; |
343 | 178e08a5 | aliguori | bdrv_put_buffer(s->bs, buf, s->base_offset + pos, size); |
344 | a672b469 | aliguori | return size;
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345 | a672b469 | aliguori | } |
346 | a672b469 | aliguori | |
347 | 178e08a5 | aliguori | static int block_get_buffer(void *opaque, uint8_t *buf, int64_t pos, int size) |
348 | a672b469 | aliguori | { |
349 | a672b469 | aliguori | QEMUFileBdrv *s = opaque; |
350 | 178e08a5 | aliguori | return bdrv_get_buffer(s->bs, buf, s->base_offset + pos, size);
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351 | a672b469 | aliguori | } |
352 | a672b469 | aliguori | |
353 | a672b469 | aliguori | static int bdrv_fclose(void *opaque) |
354 | a672b469 | aliguori | { |
355 | a672b469 | aliguori | QEMUFileBdrv *s = opaque; |
356 | a672b469 | aliguori | qemu_free(s); |
357 | a672b469 | aliguori | return 0; |
358 | a672b469 | aliguori | } |
359 | a672b469 | aliguori | |
360 | a672b469 | aliguori | static QEMUFile *qemu_fopen_bdrv(BlockDriverState *bs, int64_t offset, int is_writable) |
361 | a672b469 | aliguori | { |
362 | a672b469 | aliguori | QEMUFileBdrv *s; |
363 | a672b469 | aliguori | |
364 | a672b469 | aliguori | s = qemu_mallocz(sizeof(QEMUFileBdrv));
|
365 | a672b469 | aliguori | |
366 | a672b469 | aliguori | s->bs = bs; |
367 | a672b469 | aliguori | s->base_offset = offset; |
368 | a672b469 | aliguori | |
369 | a672b469 | aliguori | if (is_writable)
|
370 | 19629537 | Glauber Costa | return qemu_fopen_ops(s, block_put_buffer, NULL, bdrv_fclose, NULL, NULL); |
371 | a672b469 | aliguori | |
372 | 19629537 | Glauber Costa | return qemu_fopen_ops(s, NULL, block_get_buffer, bdrv_fclose, NULL, NULL); |
373 | a672b469 | aliguori | } |
374 | a672b469 | aliguori | |
375 | a672b469 | aliguori | QEMUFile *qemu_fopen_ops(void *opaque, QEMUFilePutBufferFunc *put_buffer,
|
376 | a672b469 | aliguori | QEMUFileGetBufferFunc *get_buffer, |
377 | a672b469 | aliguori | QEMUFileCloseFunc *close, |
378 | 19629537 | Glauber Costa | QEMUFileRateLimit *rate_limit, |
379 | 19629537 | Glauber Costa | QEMUFileSetRateLimit *set_rate_limit) |
380 | a672b469 | aliguori | { |
381 | a672b469 | aliguori | QEMUFile *f; |
382 | a672b469 | aliguori | |
383 | a672b469 | aliguori | f = qemu_mallocz(sizeof(QEMUFile));
|
384 | a672b469 | aliguori | |
385 | a672b469 | aliguori | f->opaque = opaque; |
386 | a672b469 | aliguori | f->put_buffer = put_buffer; |
387 | a672b469 | aliguori | f->get_buffer = get_buffer; |
388 | a672b469 | aliguori | f->close = close; |
389 | a672b469 | aliguori | f->rate_limit = rate_limit; |
390 | 19629537 | Glauber Costa | f->set_rate_limit = set_rate_limit; |
391 | a672b469 | aliguori | f->is_write = 0;
|
392 | a672b469 | aliguori | |
393 | a672b469 | aliguori | return f;
|
394 | a672b469 | aliguori | } |
395 | a672b469 | aliguori | |
396 | a672b469 | aliguori | int qemu_file_has_error(QEMUFile *f)
|
397 | a672b469 | aliguori | { |
398 | a672b469 | aliguori | return f->has_error;
|
399 | a672b469 | aliguori | } |
400 | a672b469 | aliguori | |
401 | 4dabe248 | aliguori | void qemu_file_set_error(QEMUFile *f)
|
402 | 4dabe248 | aliguori | { |
403 | 4dabe248 | aliguori | f->has_error = 1;
|
404 | 4dabe248 | aliguori | } |
405 | 4dabe248 | aliguori | |
406 | a672b469 | aliguori | void qemu_fflush(QEMUFile *f)
|
407 | a672b469 | aliguori | { |
408 | a672b469 | aliguori | if (!f->put_buffer)
|
409 | a672b469 | aliguori | return;
|
410 | a672b469 | aliguori | |
411 | a672b469 | aliguori | if (f->is_write && f->buf_index > 0) { |
412 | a672b469 | aliguori | int len;
|
413 | a672b469 | aliguori | |
414 | a672b469 | aliguori | len = f->put_buffer(f->opaque, f->buf, f->buf_offset, f->buf_index); |
415 | a672b469 | aliguori | if (len > 0) |
416 | a672b469 | aliguori | f->buf_offset += f->buf_index; |
417 | a672b469 | aliguori | else
|
418 | a672b469 | aliguori | f->has_error = 1;
|
419 | a672b469 | aliguori | f->buf_index = 0;
|
420 | a672b469 | aliguori | } |
421 | a672b469 | aliguori | } |
422 | a672b469 | aliguori | |
423 | a672b469 | aliguori | static void qemu_fill_buffer(QEMUFile *f) |
424 | a672b469 | aliguori | { |
425 | a672b469 | aliguori | int len;
|
426 | a672b469 | aliguori | |
427 | a672b469 | aliguori | if (!f->get_buffer)
|
428 | a672b469 | aliguori | return;
|
429 | a672b469 | aliguori | |
430 | a672b469 | aliguori | if (f->is_write)
|
431 | a672b469 | aliguori | abort(); |
432 | a672b469 | aliguori | |
433 | a672b469 | aliguori | len = f->get_buffer(f->opaque, f->buf, f->buf_offset, IO_BUF_SIZE); |
434 | a672b469 | aliguori | if (len > 0) { |
435 | a672b469 | aliguori | f->buf_index = 0;
|
436 | a672b469 | aliguori | f->buf_size = len; |
437 | a672b469 | aliguori | f->buf_offset += len; |
438 | a672b469 | aliguori | } else if (len != -EAGAIN) |
439 | a672b469 | aliguori | f->has_error = 1;
|
440 | a672b469 | aliguori | } |
441 | a672b469 | aliguori | |
442 | a672b469 | aliguori | int qemu_fclose(QEMUFile *f)
|
443 | a672b469 | aliguori | { |
444 | a672b469 | aliguori | int ret = 0; |
445 | a672b469 | aliguori | qemu_fflush(f); |
446 | a672b469 | aliguori | if (f->close)
|
447 | a672b469 | aliguori | ret = f->close(f->opaque); |
448 | a672b469 | aliguori | qemu_free(f); |
449 | a672b469 | aliguori | return ret;
|
450 | a672b469 | aliguori | } |
451 | a672b469 | aliguori | |
452 | a672b469 | aliguori | void qemu_file_put_notify(QEMUFile *f)
|
453 | a672b469 | aliguori | { |
454 | a672b469 | aliguori | f->put_buffer(f->opaque, NULL, 0, 0); |
455 | a672b469 | aliguori | } |
456 | a672b469 | aliguori | |
457 | a672b469 | aliguori | void qemu_put_buffer(QEMUFile *f, const uint8_t *buf, int size) |
458 | a672b469 | aliguori | { |
459 | a672b469 | aliguori | int l;
|
460 | a672b469 | aliguori | |
461 | a672b469 | aliguori | if (!f->has_error && f->is_write == 0 && f->buf_index > 0) { |
462 | a672b469 | aliguori | fprintf(stderr, |
463 | a672b469 | aliguori | "Attempted to write to buffer while read buffer is not empty\n");
|
464 | a672b469 | aliguori | abort(); |
465 | a672b469 | aliguori | } |
466 | a672b469 | aliguori | |
467 | a672b469 | aliguori | while (!f->has_error && size > 0) { |
468 | a672b469 | aliguori | l = IO_BUF_SIZE - f->buf_index; |
469 | a672b469 | aliguori | if (l > size)
|
470 | a672b469 | aliguori | l = size; |
471 | a672b469 | aliguori | memcpy(f->buf + f->buf_index, buf, l); |
472 | a672b469 | aliguori | f->is_write = 1;
|
473 | a672b469 | aliguori | f->buf_index += l; |
474 | a672b469 | aliguori | buf += l; |
475 | a672b469 | aliguori | size -= l; |
476 | a672b469 | aliguori | if (f->buf_index >= IO_BUF_SIZE)
|
477 | a672b469 | aliguori | qemu_fflush(f); |
478 | a672b469 | aliguori | } |
479 | a672b469 | aliguori | } |
480 | a672b469 | aliguori | |
481 | a672b469 | aliguori | void qemu_put_byte(QEMUFile *f, int v) |
482 | a672b469 | aliguori | { |
483 | a672b469 | aliguori | if (!f->has_error && f->is_write == 0 && f->buf_index > 0) { |
484 | a672b469 | aliguori | fprintf(stderr, |
485 | a672b469 | aliguori | "Attempted to write to buffer while read buffer is not empty\n");
|
486 | a672b469 | aliguori | abort(); |
487 | a672b469 | aliguori | } |
488 | a672b469 | aliguori | |
489 | a672b469 | aliguori | f->buf[f->buf_index++] = v; |
490 | a672b469 | aliguori | f->is_write = 1;
|
491 | a672b469 | aliguori | if (f->buf_index >= IO_BUF_SIZE)
|
492 | a672b469 | aliguori | qemu_fflush(f); |
493 | a672b469 | aliguori | } |
494 | a672b469 | aliguori | |
495 | a672b469 | aliguori | int qemu_get_buffer(QEMUFile *f, uint8_t *buf, int size1) |
496 | a672b469 | aliguori | { |
497 | a672b469 | aliguori | int size, l;
|
498 | a672b469 | aliguori | |
499 | a672b469 | aliguori | if (f->is_write)
|
500 | a672b469 | aliguori | abort(); |
501 | a672b469 | aliguori | |
502 | a672b469 | aliguori | size = size1; |
503 | a672b469 | aliguori | while (size > 0) { |
504 | a672b469 | aliguori | l = f->buf_size - f->buf_index; |
505 | a672b469 | aliguori | if (l == 0) { |
506 | a672b469 | aliguori | qemu_fill_buffer(f); |
507 | a672b469 | aliguori | l = f->buf_size - f->buf_index; |
508 | a672b469 | aliguori | if (l == 0) |
509 | a672b469 | aliguori | break;
|
510 | a672b469 | aliguori | } |
511 | a672b469 | aliguori | if (l > size)
|
512 | a672b469 | aliguori | l = size; |
513 | a672b469 | aliguori | memcpy(buf, f->buf + f->buf_index, l); |
514 | a672b469 | aliguori | f->buf_index += l; |
515 | a672b469 | aliguori | buf += l; |
516 | a672b469 | aliguori | size -= l; |
517 | a672b469 | aliguori | } |
518 | a672b469 | aliguori | return size1 - size;
|
519 | a672b469 | aliguori | } |
520 | a672b469 | aliguori | |
521 | a672b469 | aliguori | int qemu_get_byte(QEMUFile *f)
|
522 | a672b469 | aliguori | { |
523 | a672b469 | aliguori | if (f->is_write)
|
524 | a672b469 | aliguori | abort(); |
525 | a672b469 | aliguori | |
526 | a672b469 | aliguori | if (f->buf_index >= f->buf_size) {
|
527 | a672b469 | aliguori | qemu_fill_buffer(f); |
528 | a672b469 | aliguori | if (f->buf_index >= f->buf_size)
|
529 | a672b469 | aliguori | return 0; |
530 | a672b469 | aliguori | } |
531 | a672b469 | aliguori | return f->buf[f->buf_index++];
|
532 | a672b469 | aliguori | } |
533 | a672b469 | aliguori | |
534 | a672b469 | aliguori | int64_t qemu_ftell(QEMUFile *f) |
535 | a672b469 | aliguori | { |
536 | a672b469 | aliguori | return f->buf_offset - f->buf_size + f->buf_index;
|
537 | a672b469 | aliguori | } |
538 | a672b469 | aliguori | |
539 | a672b469 | aliguori | int64_t qemu_fseek(QEMUFile *f, int64_t pos, int whence)
|
540 | a672b469 | aliguori | { |
541 | a672b469 | aliguori | if (whence == SEEK_SET) {
|
542 | a672b469 | aliguori | /* nothing to do */
|
543 | a672b469 | aliguori | } else if (whence == SEEK_CUR) { |
544 | a672b469 | aliguori | pos += qemu_ftell(f); |
545 | a672b469 | aliguori | } else {
|
546 | a672b469 | aliguori | /* SEEK_END not supported */
|
547 | a672b469 | aliguori | return -1; |
548 | a672b469 | aliguori | } |
549 | a672b469 | aliguori | if (f->put_buffer) {
|
550 | a672b469 | aliguori | qemu_fflush(f); |
551 | a672b469 | aliguori | f->buf_offset = pos; |
552 | a672b469 | aliguori | } else {
|
553 | a672b469 | aliguori | f->buf_offset = pos; |
554 | a672b469 | aliguori | f->buf_index = 0;
|
555 | a672b469 | aliguori | f->buf_size = 0;
|
556 | a672b469 | aliguori | } |
557 | a672b469 | aliguori | return pos;
|
558 | a672b469 | aliguori | } |
559 | a672b469 | aliguori | |
560 | a672b469 | aliguori | int qemu_file_rate_limit(QEMUFile *f)
|
561 | a672b469 | aliguori | { |
562 | a672b469 | aliguori | if (f->rate_limit)
|
563 | a672b469 | aliguori | return f->rate_limit(f->opaque);
|
564 | a672b469 | aliguori | |
565 | a672b469 | aliguori | return 0; |
566 | a672b469 | aliguori | } |
567 | a672b469 | aliguori | |
568 | 19629537 | Glauber Costa | size_t qemu_file_set_rate_limit(QEMUFile *f, size_t new_rate) |
569 | 19629537 | Glauber Costa | { |
570 | 19629537 | Glauber Costa | if (f->set_rate_limit)
|
571 | 19629537 | Glauber Costa | return f->set_rate_limit(f->opaque, new_rate);
|
572 | 19629537 | Glauber Costa | |
573 | 19629537 | Glauber Costa | return 0; |
574 | 19629537 | Glauber Costa | } |
575 | 19629537 | Glauber Costa | |
576 | a672b469 | aliguori | void qemu_put_be16(QEMUFile *f, unsigned int v) |
577 | a672b469 | aliguori | { |
578 | a672b469 | aliguori | qemu_put_byte(f, v >> 8);
|
579 | a672b469 | aliguori | qemu_put_byte(f, v); |
580 | a672b469 | aliguori | } |
581 | a672b469 | aliguori | |
582 | a672b469 | aliguori | void qemu_put_be32(QEMUFile *f, unsigned int v) |
583 | a672b469 | aliguori | { |
584 | a672b469 | aliguori | qemu_put_byte(f, v >> 24);
|
585 | a672b469 | aliguori | qemu_put_byte(f, v >> 16);
|
586 | a672b469 | aliguori | qemu_put_byte(f, v >> 8);
|
587 | a672b469 | aliguori | qemu_put_byte(f, v); |
588 | a672b469 | aliguori | } |
589 | a672b469 | aliguori | |
590 | a672b469 | aliguori | void qemu_put_be64(QEMUFile *f, uint64_t v)
|
591 | a672b469 | aliguori | { |
592 | a672b469 | aliguori | qemu_put_be32(f, v >> 32);
|
593 | a672b469 | aliguori | qemu_put_be32(f, v); |
594 | a672b469 | aliguori | } |
595 | a672b469 | aliguori | |
596 | a672b469 | aliguori | unsigned int qemu_get_be16(QEMUFile *f) |
597 | a672b469 | aliguori | { |
598 | a672b469 | aliguori | unsigned int v; |
599 | a672b469 | aliguori | v = qemu_get_byte(f) << 8;
|
600 | a672b469 | aliguori | v |= qemu_get_byte(f); |
601 | a672b469 | aliguori | return v;
|
602 | a672b469 | aliguori | } |
603 | a672b469 | aliguori | |
604 | a672b469 | aliguori | unsigned int qemu_get_be32(QEMUFile *f) |
605 | a672b469 | aliguori | { |
606 | a672b469 | aliguori | unsigned int v; |
607 | a672b469 | aliguori | v = qemu_get_byte(f) << 24;
|
608 | a672b469 | aliguori | v |= qemu_get_byte(f) << 16;
|
609 | a672b469 | aliguori | v |= qemu_get_byte(f) << 8;
|
610 | a672b469 | aliguori | v |= qemu_get_byte(f); |
611 | a672b469 | aliguori | return v;
|
612 | a672b469 | aliguori | } |
613 | a672b469 | aliguori | |
614 | a672b469 | aliguori | uint64_t qemu_get_be64(QEMUFile *f) |
615 | a672b469 | aliguori | { |
616 | a672b469 | aliguori | uint64_t v; |
617 | a672b469 | aliguori | v = (uint64_t)qemu_get_be32(f) << 32;
|
618 | a672b469 | aliguori | v |= qemu_get_be32(f); |
619 | a672b469 | aliguori | return v;
|
620 | a672b469 | aliguori | } |
621 | a672b469 | aliguori | |
622 | a672b469 | aliguori | typedef struct SaveStateEntry { |
623 | a672b469 | aliguori | char idstr[256]; |
624 | a672b469 | aliguori | int instance_id;
|
625 | a672b469 | aliguori | int version_id;
|
626 | a672b469 | aliguori | int section_id;
|
627 | a672b469 | aliguori | SaveLiveStateHandler *save_live_state; |
628 | a672b469 | aliguori | SaveStateHandler *save_state; |
629 | a672b469 | aliguori | LoadStateHandler *load_state; |
630 | a672b469 | aliguori | void *opaque;
|
631 | a672b469 | aliguori | struct SaveStateEntry *next;
|
632 | a672b469 | aliguori | } SaveStateEntry; |
633 | a672b469 | aliguori | |
634 | a672b469 | aliguori | static SaveStateEntry *first_se;
|
635 | a672b469 | aliguori | |
636 | a672b469 | aliguori | /* TODO: Individual devices generally have very little idea about the rest
|
637 | a672b469 | aliguori | of the system, so instance_id should be removed/replaced.
|
638 | a672b469 | aliguori | Meanwhile pass -1 as instance_id if you do not already have a clearly
|
639 | a672b469 | aliguori | distinguishing id for all instances of your device class. */
|
640 | a672b469 | aliguori | int register_savevm_live(const char *idstr, |
641 | a672b469 | aliguori | int instance_id,
|
642 | a672b469 | aliguori | int version_id,
|
643 | a672b469 | aliguori | SaveLiveStateHandler *save_live_state, |
644 | a672b469 | aliguori | SaveStateHandler *save_state, |
645 | a672b469 | aliguori | LoadStateHandler *load_state, |
646 | a672b469 | aliguori | void *opaque)
|
647 | a672b469 | aliguori | { |
648 | a672b469 | aliguori | SaveStateEntry *se, **pse; |
649 | a672b469 | aliguori | static int global_section_id; |
650 | a672b469 | aliguori | |
651 | a672b469 | aliguori | se = qemu_malloc(sizeof(SaveStateEntry));
|
652 | a672b469 | aliguori | pstrcpy(se->idstr, sizeof(se->idstr), idstr);
|
653 | a672b469 | aliguori | se->instance_id = (instance_id == -1) ? 0 : instance_id; |
654 | a672b469 | aliguori | se->version_id = version_id; |
655 | a672b469 | aliguori | se->section_id = global_section_id++; |
656 | a672b469 | aliguori | se->save_live_state = save_live_state; |
657 | a672b469 | aliguori | se->save_state = save_state; |
658 | a672b469 | aliguori | se->load_state = load_state; |
659 | a672b469 | aliguori | se->opaque = opaque; |
660 | a672b469 | aliguori | se->next = NULL;
|
661 | a672b469 | aliguori | |
662 | a672b469 | aliguori | /* add at the end of list */
|
663 | a672b469 | aliguori | pse = &first_se; |
664 | a672b469 | aliguori | while (*pse != NULL) { |
665 | a672b469 | aliguori | if (instance_id == -1 |
666 | a672b469 | aliguori | && strcmp(se->idstr, (*pse)->idstr) == 0
|
667 | a672b469 | aliguori | && se->instance_id <= (*pse)->instance_id) |
668 | a672b469 | aliguori | se->instance_id = (*pse)->instance_id + 1;
|
669 | a672b469 | aliguori | pse = &(*pse)->next; |
670 | a672b469 | aliguori | } |
671 | a672b469 | aliguori | *pse = se; |
672 | a672b469 | aliguori | return 0; |
673 | a672b469 | aliguori | } |
674 | a672b469 | aliguori | |
675 | a672b469 | aliguori | int register_savevm(const char *idstr, |
676 | a672b469 | aliguori | int instance_id,
|
677 | a672b469 | aliguori | int version_id,
|
678 | a672b469 | aliguori | SaveStateHandler *save_state, |
679 | a672b469 | aliguori | LoadStateHandler *load_state, |
680 | a672b469 | aliguori | void *opaque)
|
681 | a672b469 | aliguori | { |
682 | a672b469 | aliguori | return register_savevm_live(idstr, instance_id, version_id,
|
683 | a672b469 | aliguori | NULL, save_state, load_state, opaque);
|
684 | a672b469 | aliguori | } |
685 | a672b469 | aliguori | |
686 | 41bd13af | aliguori | void unregister_savevm(const char *idstr, void *opaque) |
687 | 41bd13af | aliguori | { |
688 | 41bd13af | aliguori | SaveStateEntry **pse; |
689 | 41bd13af | aliguori | |
690 | 41bd13af | aliguori | pse = &first_se; |
691 | 41bd13af | aliguori | while (*pse != NULL) { |
692 | 41bd13af | aliguori | if (strcmp((*pse)->idstr, idstr) == 0 && (*pse)->opaque == opaque) { |
693 | 41bd13af | aliguori | SaveStateEntry *next = (*pse)->next; |
694 | 41bd13af | aliguori | qemu_free(*pse); |
695 | 41bd13af | aliguori | *pse = next; |
696 | 41bd13af | aliguori | continue;
|
697 | 41bd13af | aliguori | } |
698 | 41bd13af | aliguori | pse = &(*pse)->next; |
699 | 41bd13af | aliguori | } |
700 | 41bd13af | aliguori | } |
701 | 41bd13af | aliguori | |
702 | a672b469 | aliguori | #define QEMU_VM_FILE_MAGIC 0x5145564d |
703 | a672b469 | aliguori | #define QEMU_VM_FILE_VERSION_COMPAT 0x00000002 |
704 | a672b469 | aliguori | #define QEMU_VM_FILE_VERSION 0x00000003 |
705 | a672b469 | aliguori | |
706 | a672b469 | aliguori | #define QEMU_VM_EOF 0x00 |
707 | a672b469 | aliguori | #define QEMU_VM_SECTION_START 0x01 |
708 | a672b469 | aliguori | #define QEMU_VM_SECTION_PART 0x02 |
709 | a672b469 | aliguori | #define QEMU_VM_SECTION_END 0x03 |
710 | a672b469 | aliguori | #define QEMU_VM_SECTION_FULL 0x04 |
711 | a672b469 | aliguori | |
712 | a672b469 | aliguori | int qemu_savevm_state_begin(QEMUFile *f)
|
713 | a672b469 | aliguori | { |
714 | a672b469 | aliguori | SaveStateEntry *se; |
715 | a672b469 | aliguori | |
716 | a672b469 | aliguori | qemu_put_be32(f, QEMU_VM_FILE_MAGIC); |
717 | a672b469 | aliguori | qemu_put_be32(f, QEMU_VM_FILE_VERSION); |
718 | a672b469 | aliguori | |
719 | a672b469 | aliguori | for (se = first_se; se != NULL; se = se->next) { |
720 | a672b469 | aliguori | int len;
|
721 | a672b469 | aliguori | |
722 | a672b469 | aliguori | if (se->save_live_state == NULL) |
723 | a672b469 | aliguori | continue;
|
724 | a672b469 | aliguori | |
725 | a672b469 | aliguori | /* Section type */
|
726 | a672b469 | aliguori | qemu_put_byte(f, QEMU_VM_SECTION_START); |
727 | a672b469 | aliguori | qemu_put_be32(f, se->section_id); |
728 | a672b469 | aliguori | |
729 | a672b469 | aliguori | /* ID string */
|
730 | a672b469 | aliguori | len = strlen(se->idstr); |
731 | a672b469 | aliguori | qemu_put_byte(f, len); |
732 | a672b469 | aliguori | qemu_put_buffer(f, (uint8_t *)se->idstr, len); |
733 | a672b469 | aliguori | |
734 | a672b469 | aliguori | qemu_put_be32(f, se->instance_id); |
735 | a672b469 | aliguori | qemu_put_be32(f, se->version_id); |
736 | a672b469 | aliguori | |
737 | a672b469 | aliguori | se->save_live_state(f, QEMU_VM_SECTION_START, se->opaque); |
738 | a672b469 | aliguori | } |
739 | a672b469 | aliguori | |
740 | a672b469 | aliguori | if (qemu_file_has_error(f))
|
741 | a672b469 | aliguori | return -EIO;
|
742 | a672b469 | aliguori | |
743 | a672b469 | aliguori | return 0; |
744 | a672b469 | aliguori | } |
745 | a672b469 | aliguori | |
746 | a672b469 | aliguori | int qemu_savevm_state_iterate(QEMUFile *f)
|
747 | a672b469 | aliguori | { |
748 | a672b469 | aliguori | SaveStateEntry *se; |
749 | a672b469 | aliguori | int ret = 1; |
750 | a672b469 | aliguori | |
751 | a672b469 | aliguori | for (se = first_se; se != NULL; se = se->next) { |
752 | a672b469 | aliguori | if (se->save_live_state == NULL) |
753 | a672b469 | aliguori | continue;
|
754 | a672b469 | aliguori | |
755 | a672b469 | aliguori | /* Section type */
|
756 | a672b469 | aliguori | qemu_put_byte(f, QEMU_VM_SECTION_PART); |
757 | a672b469 | aliguori | qemu_put_be32(f, se->section_id); |
758 | a672b469 | aliguori | |
759 | a672b469 | aliguori | ret &= !!se->save_live_state(f, QEMU_VM_SECTION_PART, se->opaque); |
760 | a672b469 | aliguori | } |
761 | a672b469 | aliguori | |
762 | a672b469 | aliguori | if (ret)
|
763 | a672b469 | aliguori | return 1; |
764 | a672b469 | aliguori | |
765 | a672b469 | aliguori | if (qemu_file_has_error(f))
|
766 | a672b469 | aliguori | return -EIO;
|
767 | a672b469 | aliguori | |
768 | a672b469 | aliguori | return 0; |
769 | a672b469 | aliguori | } |
770 | a672b469 | aliguori | |
771 | a672b469 | aliguori | int qemu_savevm_state_complete(QEMUFile *f)
|
772 | a672b469 | aliguori | { |
773 | a672b469 | aliguori | SaveStateEntry *se; |
774 | a672b469 | aliguori | |
775 | a672b469 | aliguori | for (se = first_se; se != NULL; se = se->next) { |
776 | a672b469 | aliguori | if (se->save_live_state == NULL) |
777 | a672b469 | aliguori | continue;
|
778 | a672b469 | aliguori | |
779 | a672b469 | aliguori | /* Section type */
|
780 | a672b469 | aliguori | qemu_put_byte(f, QEMU_VM_SECTION_END); |
781 | a672b469 | aliguori | qemu_put_be32(f, se->section_id); |
782 | a672b469 | aliguori | |
783 | a672b469 | aliguori | se->save_live_state(f, QEMU_VM_SECTION_END, se->opaque); |
784 | a672b469 | aliguori | } |
785 | a672b469 | aliguori | |
786 | a672b469 | aliguori | for(se = first_se; se != NULL; se = se->next) { |
787 | a672b469 | aliguori | int len;
|
788 | a672b469 | aliguori | |
789 | a672b469 | aliguori | if (se->save_state == NULL) |
790 | a672b469 | aliguori | continue;
|
791 | a672b469 | aliguori | |
792 | a672b469 | aliguori | /* Section type */
|
793 | a672b469 | aliguori | qemu_put_byte(f, QEMU_VM_SECTION_FULL); |
794 | a672b469 | aliguori | qemu_put_be32(f, se->section_id); |
795 | a672b469 | aliguori | |
796 | a672b469 | aliguori | /* ID string */
|
797 | a672b469 | aliguori | len = strlen(se->idstr); |
798 | a672b469 | aliguori | qemu_put_byte(f, len); |
799 | a672b469 | aliguori | qemu_put_buffer(f, (uint8_t *)se->idstr, len); |
800 | a672b469 | aliguori | |
801 | a672b469 | aliguori | qemu_put_be32(f, se->instance_id); |
802 | a672b469 | aliguori | qemu_put_be32(f, se->version_id); |
803 | a672b469 | aliguori | |
804 | a672b469 | aliguori | se->save_state(f, se->opaque); |
805 | a672b469 | aliguori | } |
806 | a672b469 | aliguori | |
807 | a672b469 | aliguori | qemu_put_byte(f, QEMU_VM_EOF); |
808 | a672b469 | aliguori | |
809 | a672b469 | aliguori | if (qemu_file_has_error(f))
|
810 | a672b469 | aliguori | return -EIO;
|
811 | a672b469 | aliguori | |
812 | a672b469 | aliguori | return 0; |
813 | a672b469 | aliguori | } |
814 | a672b469 | aliguori | |
815 | a672b469 | aliguori | int qemu_savevm_state(QEMUFile *f)
|
816 | a672b469 | aliguori | { |
817 | a672b469 | aliguori | int saved_vm_running;
|
818 | a672b469 | aliguori | int ret;
|
819 | a672b469 | aliguori | |
820 | a672b469 | aliguori | saved_vm_running = vm_running; |
821 | a672b469 | aliguori | vm_stop(0);
|
822 | a672b469 | aliguori | |
823 | a672b469 | aliguori | bdrv_flush_all(); |
824 | a672b469 | aliguori | |
825 | a672b469 | aliguori | ret = qemu_savevm_state_begin(f); |
826 | a672b469 | aliguori | if (ret < 0) |
827 | a672b469 | aliguori | goto out;
|
828 | a672b469 | aliguori | |
829 | a672b469 | aliguori | do {
|
830 | a672b469 | aliguori | ret = qemu_savevm_state_iterate(f); |
831 | a672b469 | aliguori | if (ret < 0) |
832 | a672b469 | aliguori | goto out;
|
833 | a672b469 | aliguori | } while (ret == 0); |
834 | a672b469 | aliguori | |
835 | a672b469 | aliguori | ret = qemu_savevm_state_complete(f); |
836 | a672b469 | aliguori | |
837 | a672b469 | aliguori | out:
|
838 | a672b469 | aliguori | if (qemu_file_has_error(f))
|
839 | a672b469 | aliguori | ret = -EIO; |
840 | a672b469 | aliguori | |
841 | a672b469 | aliguori | if (!ret && saved_vm_running)
|
842 | a672b469 | aliguori | vm_start(); |
843 | a672b469 | aliguori | |
844 | a672b469 | aliguori | return ret;
|
845 | a672b469 | aliguori | } |
846 | a672b469 | aliguori | |
847 | a672b469 | aliguori | static SaveStateEntry *find_se(const char *idstr, int instance_id) |
848 | a672b469 | aliguori | { |
849 | a672b469 | aliguori | SaveStateEntry *se; |
850 | a672b469 | aliguori | |
851 | a672b469 | aliguori | for(se = first_se; se != NULL; se = se->next) { |
852 | a672b469 | aliguori | if (!strcmp(se->idstr, idstr) &&
|
853 | a672b469 | aliguori | instance_id == se->instance_id) |
854 | a672b469 | aliguori | return se;
|
855 | a672b469 | aliguori | } |
856 | a672b469 | aliguori | return NULL; |
857 | a672b469 | aliguori | } |
858 | a672b469 | aliguori | |
859 | a672b469 | aliguori | typedef struct LoadStateEntry { |
860 | a672b469 | aliguori | SaveStateEntry *se; |
861 | a672b469 | aliguori | int section_id;
|
862 | a672b469 | aliguori | int version_id;
|
863 | a672b469 | aliguori | struct LoadStateEntry *next;
|
864 | a672b469 | aliguori | } LoadStateEntry; |
865 | a672b469 | aliguori | |
866 | a672b469 | aliguori | static int qemu_loadvm_state_v2(QEMUFile *f) |
867 | a672b469 | aliguori | { |
868 | a672b469 | aliguori | SaveStateEntry *se; |
869 | a672b469 | aliguori | int len, ret, instance_id, record_len, version_id;
|
870 | a672b469 | aliguori | int64_t total_len, end_pos, cur_pos; |
871 | a672b469 | aliguori | char idstr[256]; |
872 | a672b469 | aliguori | |
873 | a672b469 | aliguori | total_len = qemu_get_be64(f); |
874 | a672b469 | aliguori | end_pos = total_len + qemu_ftell(f); |
875 | a672b469 | aliguori | for(;;) {
|
876 | a672b469 | aliguori | if (qemu_ftell(f) >= end_pos)
|
877 | a672b469 | aliguori | break;
|
878 | a672b469 | aliguori | len = qemu_get_byte(f); |
879 | a672b469 | aliguori | qemu_get_buffer(f, (uint8_t *)idstr, len); |
880 | a672b469 | aliguori | idstr[len] = '\0';
|
881 | a672b469 | aliguori | instance_id = qemu_get_be32(f); |
882 | a672b469 | aliguori | version_id = qemu_get_be32(f); |
883 | a672b469 | aliguori | record_len = qemu_get_be32(f); |
884 | a672b469 | aliguori | cur_pos = qemu_ftell(f); |
885 | a672b469 | aliguori | se = find_se(idstr, instance_id); |
886 | a672b469 | aliguori | if (!se) {
|
887 | a672b469 | aliguori | fprintf(stderr, "qemu: warning: instance 0x%x of device '%s' not present in current VM\n",
|
888 | a672b469 | aliguori | instance_id, idstr); |
889 | a672b469 | aliguori | } else {
|
890 | a672b469 | aliguori | ret = se->load_state(f, se->opaque, version_id); |
891 | a672b469 | aliguori | if (ret < 0) { |
892 | a672b469 | aliguori | fprintf(stderr, "qemu: warning: error while loading state for instance 0x%x of device '%s'\n",
|
893 | a672b469 | aliguori | instance_id, idstr); |
894 | d02f7094 | Anthony Liguori | return ret;
|
895 | a672b469 | aliguori | } |
896 | a672b469 | aliguori | } |
897 | a672b469 | aliguori | /* always seek to exact end of record */
|
898 | a672b469 | aliguori | qemu_fseek(f, cur_pos + record_len, SEEK_SET); |
899 | a672b469 | aliguori | } |
900 | a672b469 | aliguori | |
901 | a672b469 | aliguori | if (qemu_file_has_error(f))
|
902 | a672b469 | aliguori | return -EIO;
|
903 | a672b469 | aliguori | |
904 | a672b469 | aliguori | return 0; |
905 | a672b469 | aliguori | } |
906 | a672b469 | aliguori | |
907 | a672b469 | aliguori | int qemu_loadvm_state(QEMUFile *f)
|
908 | a672b469 | aliguori | { |
909 | a672b469 | aliguori | LoadStateEntry *first_le = NULL;
|
910 | a672b469 | aliguori | uint8_t section_type; |
911 | a672b469 | aliguori | unsigned int v; |
912 | a672b469 | aliguori | int ret;
|
913 | a672b469 | aliguori | |
914 | a672b469 | aliguori | v = qemu_get_be32(f); |
915 | a672b469 | aliguori | if (v != QEMU_VM_FILE_MAGIC)
|
916 | a672b469 | aliguori | return -EINVAL;
|
917 | a672b469 | aliguori | |
918 | a672b469 | aliguori | v = qemu_get_be32(f); |
919 | a672b469 | aliguori | if (v == QEMU_VM_FILE_VERSION_COMPAT)
|
920 | a672b469 | aliguori | return qemu_loadvm_state_v2(f);
|
921 | a672b469 | aliguori | if (v != QEMU_VM_FILE_VERSION)
|
922 | a672b469 | aliguori | return -ENOTSUP;
|
923 | a672b469 | aliguori | |
924 | a672b469 | aliguori | while ((section_type = qemu_get_byte(f)) != QEMU_VM_EOF) {
|
925 | a672b469 | aliguori | uint32_t instance_id, version_id, section_id; |
926 | a672b469 | aliguori | LoadStateEntry *le; |
927 | a672b469 | aliguori | SaveStateEntry *se; |
928 | a672b469 | aliguori | char idstr[257]; |
929 | a672b469 | aliguori | int len;
|
930 | a672b469 | aliguori | |
931 | a672b469 | aliguori | switch (section_type) {
|
932 | a672b469 | aliguori | case QEMU_VM_SECTION_START:
|
933 | a672b469 | aliguori | case QEMU_VM_SECTION_FULL:
|
934 | a672b469 | aliguori | /* Read section start */
|
935 | a672b469 | aliguori | section_id = qemu_get_be32(f); |
936 | a672b469 | aliguori | len = qemu_get_byte(f); |
937 | a672b469 | aliguori | qemu_get_buffer(f, (uint8_t *)idstr, len); |
938 | a672b469 | aliguori | idstr[len] = 0;
|
939 | a672b469 | aliguori | instance_id = qemu_get_be32(f); |
940 | a672b469 | aliguori | version_id = qemu_get_be32(f); |
941 | a672b469 | aliguori | |
942 | a672b469 | aliguori | /* Find savevm section */
|
943 | a672b469 | aliguori | se = find_se(idstr, instance_id); |
944 | a672b469 | aliguori | if (se == NULL) { |
945 | a672b469 | aliguori | fprintf(stderr, "Unknown savevm section or instance '%s' %d\n", idstr, instance_id);
|
946 | a672b469 | aliguori | ret = -EINVAL; |
947 | a672b469 | aliguori | goto out;
|
948 | a672b469 | aliguori | } |
949 | a672b469 | aliguori | |
950 | a672b469 | aliguori | /* Validate version */
|
951 | a672b469 | aliguori | if (version_id > se->version_id) {
|
952 | a672b469 | aliguori | fprintf(stderr, "savevm: unsupported version %d for '%s' v%d\n",
|
953 | a672b469 | aliguori | version_id, idstr, se->version_id); |
954 | a672b469 | aliguori | ret = -EINVAL; |
955 | a672b469 | aliguori | goto out;
|
956 | a672b469 | aliguori | } |
957 | a672b469 | aliguori | |
958 | a672b469 | aliguori | /* Add entry */
|
959 | a672b469 | aliguori | le = qemu_mallocz(sizeof(*le));
|
960 | a672b469 | aliguori | |
961 | a672b469 | aliguori | le->se = se; |
962 | a672b469 | aliguori | le->section_id = section_id; |
963 | a672b469 | aliguori | le->version_id = version_id; |
964 | a672b469 | aliguori | le->next = first_le; |
965 | a672b469 | aliguori | first_le = le; |
966 | a672b469 | aliguori | |
967 | a672b469 | aliguori | le->se->load_state(f, le->se->opaque, le->version_id); |
968 | a672b469 | aliguori | break;
|
969 | a672b469 | aliguori | case QEMU_VM_SECTION_PART:
|
970 | a672b469 | aliguori | case QEMU_VM_SECTION_END:
|
971 | a672b469 | aliguori | section_id = qemu_get_be32(f); |
972 | a672b469 | aliguori | |
973 | a672b469 | aliguori | for (le = first_le; le && le->section_id != section_id; le = le->next);
|
974 | a672b469 | aliguori | if (le == NULL) { |
975 | a672b469 | aliguori | fprintf(stderr, "Unknown savevm section %d\n", section_id);
|
976 | a672b469 | aliguori | ret = -EINVAL; |
977 | a672b469 | aliguori | goto out;
|
978 | a672b469 | aliguori | } |
979 | a672b469 | aliguori | |
980 | a672b469 | aliguori | le->se->load_state(f, le->se->opaque, le->version_id); |
981 | a672b469 | aliguori | break;
|
982 | a672b469 | aliguori | default:
|
983 | a672b469 | aliguori | fprintf(stderr, "Unknown savevm section type %d\n", section_type);
|
984 | a672b469 | aliguori | ret = -EINVAL; |
985 | a672b469 | aliguori | goto out;
|
986 | a672b469 | aliguori | } |
987 | a672b469 | aliguori | } |
988 | a672b469 | aliguori | |
989 | a672b469 | aliguori | ret = 0;
|
990 | a672b469 | aliguori | |
991 | a672b469 | aliguori | out:
|
992 | a672b469 | aliguori | while (first_le) {
|
993 | a672b469 | aliguori | LoadStateEntry *le = first_le; |
994 | a672b469 | aliguori | first_le = first_le->next; |
995 | a672b469 | aliguori | qemu_free(le); |
996 | a672b469 | aliguori | } |
997 | a672b469 | aliguori | |
998 | a672b469 | aliguori | if (qemu_file_has_error(f))
|
999 | a672b469 | aliguori | ret = -EIO; |
1000 | a672b469 | aliguori | |
1001 | a672b469 | aliguori | return ret;
|
1002 | a672b469 | aliguori | } |
1003 | a672b469 | aliguori | |
1004 | a672b469 | aliguori | /* device can contain snapshots */
|
1005 | a672b469 | aliguori | static int bdrv_can_snapshot(BlockDriverState *bs) |
1006 | a672b469 | aliguori | { |
1007 | a672b469 | aliguori | return (bs &&
|
1008 | a672b469 | aliguori | !bdrv_is_removable(bs) && |
1009 | a672b469 | aliguori | !bdrv_is_read_only(bs)); |
1010 | a672b469 | aliguori | } |
1011 | a672b469 | aliguori | |
1012 | a672b469 | aliguori | /* device must be snapshots in order to have a reliable snapshot */
|
1013 | a672b469 | aliguori | static int bdrv_has_snapshot(BlockDriverState *bs) |
1014 | a672b469 | aliguori | { |
1015 | a672b469 | aliguori | return (bs &&
|
1016 | a672b469 | aliguori | !bdrv_is_removable(bs) && |
1017 | a672b469 | aliguori | !bdrv_is_read_only(bs)); |
1018 | a672b469 | aliguori | } |
1019 | a672b469 | aliguori | |
1020 | a672b469 | aliguori | static BlockDriverState *get_bs_snapshots(void) |
1021 | a672b469 | aliguori | { |
1022 | a672b469 | aliguori | BlockDriverState *bs; |
1023 | a672b469 | aliguori | int i;
|
1024 | a672b469 | aliguori | |
1025 | a672b469 | aliguori | if (bs_snapshots)
|
1026 | a672b469 | aliguori | return bs_snapshots;
|
1027 | a672b469 | aliguori | for(i = 0; i <= nb_drives; i++) { |
1028 | a672b469 | aliguori | bs = drives_table[i].bdrv; |
1029 | a672b469 | aliguori | if (bdrv_can_snapshot(bs))
|
1030 | a672b469 | aliguori | goto ok;
|
1031 | a672b469 | aliguori | } |
1032 | a672b469 | aliguori | return NULL; |
1033 | a672b469 | aliguori | ok:
|
1034 | a672b469 | aliguori | bs_snapshots = bs; |
1035 | a672b469 | aliguori | return bs;
|
1036 | a672b469 | aliguori | } |
1037 | a672b469 | aliguori | |
1038 | a672b469 | aliguori | static int bdrv_snapshot_find(BlockDriverState *bs, QEMUSnapshotInfo *sn_info, |
1039 | a672b469 | aliguori | const char *name) |
1040 | a672b469 | aliguori | { |
1041 | a672b469 | aliguori | QEMUSnapshotInfo *sn_tab, *sn; |
1042 | a672b469 | aliguori | int nb_sns, i, ret;
|
1043 | a672b469 | aliguori | |
1044 | a672b469 | aliguori | ret = -ENOENT; |
1045 | a672b469 | aliguori | nb_sns = bdrv_snapshot_list(bs, &sn_tab); |
1046 | a672b469 | aliguori | if (nb_sns < 0) |
1047 | a672b469 | aliguori | return ret;
|
1048 | a672b469 | aliguori | for(i = 0; i < nb_sns; i++) { |
1049 | a672b469 | aliguori | sn = &sn_tab[i]; |
1050 | a672b469 | aliguori | if (!strcmp(sn->id_str, name) || !strcmp(sn->name, name)) {
|
1051 | a672b469 | aliguori | *sn_info = *sn; |
1052 | a672b469 | aliguori | ret = 0;
|
1053 | a672b469 | aliguori | break;
|
1054 | a672b469 | aliguori | } |
1055 | a672b469 | aliguori | } |
1056 | a672b469 | aliguori | qemu_free(sn_tab); |
1057 | a672b469 | aliguori | return ret;
|
1058 | a672b469 | aliguori | } |
1059 | a672b469 | aliguori | |
1060 | 376253ec | aliguori | void do_savevm(Monitor *mon, const char *name) |
1061 | a672b469 | aliguori | { |
1062 | a672b469 | aliguori | BlockDriverState *bs, *bs1; |
1063 | a672b469 | aliguori | QEMUSnapshotInfo sn1, *sn = &sn1, old_sn1, *old_sn = &old_sn1; |
1064 | a672b469 | aliguori | int must_delete, ret, i;
|
1065 | a672b469 | aliguori | BlockDriverInfo bdi1, *bdi = &bdi1; |
1066 | a672b469 | aliguori | QEMUFile *f; |
1067 | a672b469 | aliguori | int saved_vm_running;
|
1068 | 2d22b18f | aliguori | uint32_t vm_state_size; |
1069 | a672b469 | aliguori | #ifdef _WIN32
|
1070 | a672b469 | aliguori | struct _timeb tb;
|
1071 | a672b469 | aliguori | #else
|
1072 | a672b469 | aliguori | struct timeval tv;
|
1073 | a672b469 | aliguori | #endif
|
1074 | a672b469 | aliguori | |
1075 | a672b469 | aliguori | bs = get_bs_snapshots(); |
1076 | a672b469 | aliguori | if (!bs) {
|
1077 | 376253ec | aliguori | monitor_printf(mon, "No block device can accept snapshots\n");
|
1078 | a672b469 | aliguori | return;
|
1079 | a672b469 | aliguori | } |
1080 | a672b469 | aliguori | |
1081 | a672b469 | aliguori | /* ??? Should this occur after vm_stop? */
|
1082 | a672b469 | aliguori | qemu_aio_flush(); |
1083 | a672b469 | aliguori | |
1084 | a672b469 | aliguori | saved_vm_running = vm_running; |
1085 | a672b469 | aliguori | vm_stop(0);
|
1086 | a672b469 | aliguori | |
1087 | a672b469 | aliguori | must_delete = 0;
|
1088 | a672b469 | aliguori | if (name) {
|
1089 | a672b469 | aliguori | ret = bdrv_snapshot_find(bs, old_sn, name); |
1090 | a672b469 | aliguori | if (ret >= 0) { |
1091 | a672b469 | aliguori | must_delete = 1;
|
1092 | a672b469 | aliguori | } |
1093 | a672b469 | aliguori | } |
1094 | a672b469 | aliguori | memset(sn, 0, sizeof(*sn)); |
1095 | a672b469 | aliguori | if (must_delete) {
|
1096 | a672b469 | aliguori | pstrcpy(sn->name, sizeof(sn->name), old_sn->name);
|
1097 | a672b469 | aliguori | pstrcpy(sn->id_str, sizeof(sn->id_str), old_sn->id_str);
|
1098 | a672b469 | aliguori | } else {
|
1099 | a672b469 | aliguori | if (name)
|
1100 | a672b469 | aliguori | pstrcpy(sn->name, sizeof(sn->name), name);
|
1101 | a672b469 | aliguori | } |
1102 | a672b469 | aliguori | |
1103 | a672b469 | aliguori | /* fill auxiliary fields */
|
1104 | a672b469 | aliguori | #ifdef _WIN32
|
1105 | a672b469 | aliguori | _ftime(&tb); |
1106 | a672b469 | aliguori | sn->date_sec = tb.time; |
1107 | a672b469 | aliguori | sn->date_nsec = tb.millitm * 1000000;
|
1108 | a672b469 | aliguori | #else
|
1109 | a672b469 | aliguori | gettimeofday(&tv, NULL);
|
1110 | a672b469 | aliguori | sn->date_sec = tv.tv_sec; |
1111 | a672b469 | aliguori | sn->date_nsec = tv.tv_usec * 1000;
|
1112 | a672b469 | aliguori | #endif
|
1113 | a672b469 | aliguori | sn->vm_clock_nsec = qemu_get_clock(vm_clock); |
1114 | a672b469 | aliguori | |
1115 | a672b469 | aliguori | if (bdrv_get_info(bs, bdi) < 0 || bdi->vm_state_offset <= 0) { |
1116 | 376253ec | aliguori | monitor_printf(mon, "Device %s does not support VM state snapshots\n",
|
1117 | 376253ec | aliguori | bdrv_get_device_name(bs)); |
1118 | a672b469 | aliguori | goto the_end;
|
1119 | a672b469 | aliguori | } |
1120 | a672b469 | aliguori | |
1121 | a672b469 | aliguori | /* save the VM state */
|
1122 | a672b469 | aliguori | f = qemu_fopen_bdrv(bs, bdi->vm_state_offset, 1);
|
1123 | a672b469 | aliguori | if (!f) {
|
1124 | 376253ec | aliguori | monitor_printf(mon, "Could not open VM state file\n");
|
1125 | a672b469 | aliguori | goto the_end;
|
1126 | a672b469 | aliguori | } |
1127 | a672b469 | aliguori | ret = qemu_savevm_state(f); |
1128 | 2d22b18f | aliguori | vm_state_size = qemu_ftell(f); |
1129 | a672b469 | aliguori | qemu_fclose(f); |
1130 | a672b469 | aliguori | if (ret < 0) { |
1131 | 376253ec | aliguori | monitor_printf(mon, "Error %d while writing VM\n", ret);
|
1132 | a672b469 | aliguori | goto the_end;
|
1133 | a672b469 | aliguori | } |
1134 | a672b469 | aliguori | |
1135 | a672b469 | aliguori | /* create the snapshots */
|
1136 | a672b469 | aliguori | |
1137 | a672b469 | aliguori | for(i = 0; i < nb_drives; i++) { |
1138 | a672b469 | aliguori | bs1 = drives_table[i].bdrv; |
1139 | a672b469 | aliguori | if (bdrv_has_snapshot(bs1)) {
|
1140 | a672b469 | aliguori | if (must_delete) {
|
1141 | a672b469 | aliguori | ret = bdrv_snapshot_delete(bs1, old_sn->id_str); |
1142 | a672b469 | aliguori | if (ret < 0) { |
1143 | 376253ec | aliguori | monitor_printf(mon, |
1144 | 376253ec | aliguori | "Error while deleting snapshot on '%s'\n",
|
1145 | 376253ec | aliguori | bdrv_get_device_name(bs1)); |
1146 | a672b469 | aliguori | } |
1147 | a672b469 | aliguori | } |
1148 | 2d22b18f | aliguori | /* Write VM state size only to the image that contains the state */
|
1149 | 2d22b18f | aliguori | sn->vm_state_size = (bs == bs1 ? vm_state_size : 0);
|
1150 | a672b469 | aliguori | ret = bdrv_snapshot_create(bs1, sn); |
1151 | a672b469 | aliguori | if (ret < 0) { |
1152 | 376253ec | aliguori | monitor_printf(mon, "Error while creating snapshot on '%s'\n",
|
1153 | 376253ec | aliguori | bdrv_get_device_name(bs1)); |
1154 | a672b469 | aliguori | } |
1155 | a672b469 | aliguori | } |
1156 | a672b469 | aliguori | } |
1157 | a672b469 | aliguori | |
1158 | a672b469 | aliguori | the_end:
|
1159 | a672b469 | aliguori | if (saved_vm_running)
|
1160 | a672b469 | aliguori | vm_start(); |
1161 | a672b469 | aliguori | } |
1162 | a672b469 | aliguori | |
1163 | 376253ec | aliguori | void do_loadvm(Monitor *mon, const char *name) |
1164 | a672b469 | aliguori | { |
1165 | a672b469 | aliguori | BlockDriverState *bs, *bs1; |
1166 | a672b469 | aliguori | BlockDriverInfo bdi1, *bdi = &bdi1; |
1167 | 2d22b18f | aliguori | QEMUSnapshotInfo sn; |
1168 | a672b469 | aliguori | QEMUFile *f; |
1169 | a672b469 | aliguori | int i, ret;
|
1170 | a672b469 | aliguori | int saved_vm_running;
|
1171 | a672b469 | aliguori | |
1172 | a672b469 | aliguori | bs = get_bs_snapshots(); |
1173 | a672b469 | aliguori | if (!bs) {
|
1174 | 376253ec | aliguori | monitor_printf(mon, "No block device supports snapshots\n");
|
1175 | a672b469 | aliguori | return;
|
1176 | a672b469 | aliguori | } |
1177 | a672b469 | aliguori | |
1178 | a672b469 | aliguori | /* Flush all IO requests so they don't interfere with the new state. */
|
1179 | a672b469 | aliguori | qemu_aio_flush(); |
1180 | a672b469 | aliguori | |
1181 | a672b469 | aliguori | saved_vm_running = vm_running; |
1182 | a672b469 | aliguori | vm_stop(0);
|
1183 | a672b469 | aliguori | |
1184 | a672b469 | aliguori | for(i = 0; i <= nb_drives; i++) { |
1185 | a672b469 | aliguori | bs1 = drives_table[i].bdrv; |
1186 | a672b469 | aliguori | if (bdrv_has_snapshot(bs1)) {
|
1187 | a672b469 | aliguori | ret = bdrv_snapshot_goto(bs1, name); |
1188 | a672b469 | aliguori | if (ret < 0) { |
1189 | a672b469 | aliguori | if (bs != bs1)
|
1190 | 376253ec | aliguori | monitor_printf(mon, "Warning: ");
|
1191 | a672b469 | aliguori | switch(ret) {
|
1192 | a672b469 | aliguori | case -ENOTSUP:
|
1193 | 376253ec | aliguori | monitor_printf(mon, |
1194 | 376253ec | aliguori | "Snapshots not supported on device '%s'\n",
|
1195 | 376253ec | aliguori | bdrv_get_device_name(bs1)); |
1196 | a672b469 | aliguori | break;
|
1197 | a672b469 | aliguori | case -ENOENT:
|
1198 | 376253ec | aliguori | monitor_printf(mon, "Could not find snapshot '%s' on "
|
1199 | 376253ec | aliguori | "device '%s'\n",
|
1200 | 376253ec | aliguori | name, bdrv_get_device_name(bs1)); |
1201 | a672b469 | aliguori | break;
|
1202 | a672b469 | aliguori | default:
|
1203 | 376253ec | aliguori | monitor_printf(mon, "Error %d while activating snapshot on"
|
1204 | 376253ec | aliguori | " '%s'\n", ret, bdrv_get_device_name(bs1));
|
1205 | a672b469 | aliguori | break;
|
1206 | a672b469 | aliguori | } |
1207 | a672b469 | aliguori | /* fatal on snapshot block device */
|
1208 | a672b469 | aliguori | if (bs == bs1)
|
1209 | a672b469 | aliguori | goto the_end;
|
1210 | a672b469 | aliguori | } |
1211 | a672b469 | aliguori | } |
1212 | a672b469 | aliguori | } |
1213 | a672b469 | aliguori | |
1214 | a672b469 | aliguori | if (bdrv_get_info(bs, bdi) < 0 || bdi->vm_state_offset <= 0) { |
1215 | 376253ec | aliguori | monitor_printf(mon, "Device %s does not support VM state snapshots\n",
|
1216 | 376253ec | aliguori | bdrv_get_device_name(bs)); |
1217 | a672b469 | aliguori | return;
|
1218 | a672b469 | aliguori | } |
1219 | a672b469 | aliguori | |
1220 | 2d22b18f | aliguori | /* Don't even try to load empty VM states */
|
1221 | 2d22b18f | aliguori | ret = bdrv_snapshot_find(bs, &sn, name); |
1222 | 2d22b18f | aliguori | if ((ret >= 0) && (sn.vm_state_size == 0)) |
1223 | 2d22b18f | aliguori | goto the_end;
|
1224 | 2d22b18f | aliguori | |
1225 | a672b469 | aliguori | /* restore the VM state */
|
1226 | a672b469 | aliguori | f = qemu_fopen_bdrv(bs, bdi->vm_state_offset, 0);
|
1227 | a672b469 | aliguori | if (!f) {
|
1228 | 376253ec | aliguori | monitor_printf(mon, "Could not open VM state file\n");
|
1229 | a672b469 | aliguori | goto the_end;
|
1230 | a672b469 | aliguori | } |
1231 | a672b469 | aliguori | ret = qemu_loadvm_state(f); |
1232 | a672b469 | aliguori | qemu_fclose(f); |
1233 | a672b469 | aliguori | if (ret < 0) { |
1234 | 376253ec | aliguori | monitor_printf(mon, "Error %d while loading VM state\n", ret);
|
1235 | a672b469 | aliguori | } |
1236 | a672b469 | aliguori | the_end:
|
1237 | a672b469 | aliguori | if (saved_vm_running)
|
1238 | a672b469 | aliguori | vm_start(); |
1239 | a672b469 | aliguori | } |
1240 | a672b469 | aliguori | |
1241 | 376253ec | aliguori | void do_delvm(Monitor *mon, const char *name) |
1242 | a672b469 | aliguori | { |
1243 | a672b469 | aliguori | BlockDriverState *bs, *bs1; |
1244 | a672b469 | aliguori | int i, ret;
|
1245 | a672b469 | aliguori | |
1246 | a672b469 | aliguori | bs = get_bs_snapshots(); |
1247 | a672b469 | aliguori | if (!bs) {
|
1248 | 376253ec | aliguori | monitor_printf(mon, "No block device supports snapshots\n");
|
1249 | a672b469 | aliguori | return;
|
1250 | a672b469 | aliguori | } |
1251 | a672b469 | aliguori | |
1252 | a672b469 | aliguori | for(i = 0; i <= nb_drives; i++) { |
1253 | a672b469 | aliguori | bs1 = drives_table[i].bdrv; |
1254 | a672b469 | aliguori | if (bdrv_has_snapshot(bs1)) {
|
1255 | a672b469 | aliguori | ret = bdrv_snapshot_delete(bs1, name); |
1256 | a672b469 | aliguori | if (ret < 0) { |
1257 | a672b469 | aliguori | if (ret == -ENOTSUP)
|
1258 | 376253ec | aliguori | monitor_printf(mon, |
1259 | 376253ec | aliguori | "Snapshots not supported on device '%s'\n",
|
1260 | 376253ec | aliguori | bdrv_get_device_name(bs1)); |
1261 | a672b469 | aliguori | else
|
1262 | 376253ec | aliguori | monitor_printf(mon, "Error %d while deleting snapshot on "
|
1263 | 376253ec | aliguori | "'%s'\n", ret, bdrv_get_device_name(bs1));
|
1264 | a672b469 | aliguori | } |
1265 | a672b469 | aliguori | } |
1266 | a672b469 | aliguori | } |
1267 | a672b469 | aliguori | } |
1268 | a672b469 | aliguori | |
1269 | 376253ec | aliguori | void do_info_snapshots(Monitor *mon)
|
1270 | a672b469 | aliguori | { |
1271 | a672b469 | aliguori | BlockDriverState *bs, *bs1; |
1272 | a672b469 | aliguori | QEMUSnapshotInfo *sn_tab, *sn; |
1273 | a672b469 | aliguori | int nb_sns, i;
|
1274 | a672b469 | aliguori | char buf[256]; |
1275 | a672b469 | aliguori | |
1276 | a672b469 | aliguori | bs = get_bs_snapshots(); |
1277 | a672b469 | aliguori | if (!bs) {
|
1278 | 376253ec | aliguori | monitor_printf(mon, "No available block device supports snapshots\n");
|
1279 | a672b469 | aliguori | return;
|
1280 | a672b469 | aliguori | } |
1281 | 376253ec | aliguori | monitor_printf(mon, "Snapshot devices:");
|
1282 | a672b469 | aliguori | for(i = 0; i <= nb_drives; i++) { |
1283 | a672b469 | aliguori | bs1 = drives_table[i].bdrv; |
1284 | a672b469 | aliguori | if (bdrv_has_snapshot(bs1)) {
|
1285 | a672b469 | aliguori | if (bs == bs1)
|
1286 | 376253ec | aliguori | monitor_printf(mon, " %s", bdrv_get_device_name(bs1));
|
1287 | a672b469 | aliguori | } |
1288 | a672b469 | aliguori | } |
1289 | 376253ec | aliguori | monitor_printf(mon, "\n");
|
1290 | a672b469 | aliguori | |
1291 | a672b469 | aliguori | nb_sns = bdrv_snapshot_list(bs, &sn_tab); |
1292 | a672b469 | aliguori | if (nb_sns < 0) { |
1293 | 376253ec | aliguori | monitor_printf(mon, "bdrv_snapshot_list: error %d\n", nb_sns);
|
1294 | a672b469 | aliguori | return;
|
1295 | a672b469 | aliguori | } |
1296 | 376253ec | aliguori | monitor_printf(mon, "Snapshot list (from %s):\n",
|
1297 | 376253ec | aliguori | bdrv_get_device_name(bs)); |
1298 | 376253ec | aliguori | monitor_printf(mon, "%s\n", bdrv_snapshot_dump(buf, sizeof(buf), NULL)); |
1299 | a672b469 | aliguori | for(i = 0; i < nb_sns; i++) { |
1300 | a672b469 | aliguori | sn = &sn_tab[i]; |
1301 | 376253ec | aliguori | monitor_printf(mon, "%s\n", bdrv_snapshot_dump(buf, sizeof(buf), sn)); |
1302 | a672b469 | aliguori | } |
1303 | a672b469 | aliguori | qemu_free(sn_tab); |
1304 | a672b469 | aliguori | } |