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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 | |
25 | d40cdb10 | blueswir1 | #include "config-host.h" |
26 | 511d2b14 | blueswir1 | #include "qemu-common.h" |
27 | 511d2b14 | blueswir1 | #include "hw/hw.h" |
28 | 7685ee6a | Alex Williamson | #include "hw/qdev.h" |
29 | 1422e32d | Paolo Bonzini | #include "net/net.h" |
30 | 83c9089e | Paolo Bonzini | #include "monitor/monitor.h" |
31 | 9c17d615 | Paolo Bonzini | #include "sysemu/sysemu.h" |
32 | 1de7afc9 | Paolo Bonzini | #include "qemu/timer.h" |
33 | 511d2b14 | blueswir1 | #include "audio/audio.h" |
34 | caf71f86 | Paolo Bonzini | #include "migration/migration.h" |
35 | 1de7afc9 | Paolo Bonzini | #include "qemu/sockets.h" |
36 | 1de7afc9 | Paolo Bonzini | #include "qemu/queue.h" |
37 | 9c17d615 | Paolo Bonzini | #include "sysemu/cpus.h" |
38 | 022c62cb | Paolo Bonzini | #include "exec/memory.h" |
39 | a7ae8355 | Stefano Stabellini | #include "qmp-commands.h" |
40 | 517a13c9 | Juan Quintela | #include "trace.h" |
41 | 1de7afc9 | Paolo Bonzini | #include "qemu/bitops.h" |
42 | 28085f7b | Orit Wasserman | #include "qemu/iov.h" |
43 | 511d2b14 | blueswir1 | |
44 | a672b469 | aliguori | #define SELF_ANNOUNCE_ROUNDS 5 |
45 | a672b469 | aliguori | |
46 | 18995b98 | Nolan | #ifndef ETH_P_RARP
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47 | f8778a77 | Stefan Berger | #define ETH_P_RARP 0x8035 |
48 | 18995b98 | Nolan | #endif
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49 | 18995b98 | Nolan | #define ARP_HTYPE_ETH 0x0001 |
50 | 18995b98 | Nolan | #define ARP_PTYPE_IP 0x0800 |
51 | 18995b98 | Nolan | #define ARP_OP_REQUEST_REV 0x3 |
52 | 18995b98 | Nolan | |
53 | 18995b98 | Nolan | static int announce_self_create(uint8_t *buf, |
54 | a672b469 | aliguori | uint8_t *mac_addr) |
55 | a672b469 | aliguori | { |
56 | 18995b98 | Nolan | /* Ethernet header. */
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57 | 18995b98 | Nolan | memset(buf, 0xff, 6); /* destination MAC addr */ |
58 | 18995b98 | Nolan | memcpy(buf + 6, mac_addr, 6); /* source MAC addr */ |
59 | 18995b98 | Nolan | *(uint16_t *)(buf + 12) = htons(ETH_P_RARP); /* ethertype */ |
60 | 18995b98 | Nolan | |
61 | 18995b98 | Nolan | /* RARP header. */
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62 | 18995b98 | Nolan | *(uint16_t *)(buf + 14) = htons(ARP_HTYPE_ETH); /* hardware addr space */ |
63 | 18995b98 | Nolan | *(uint16_t *)(buf + 16) = htons(ARP_PTYPE_IP); /* protocol addr space */ |
64 | 18995b98 | Nolan | *(buf + 18) = 6; /* hardware addr length (ethernet) */ |
65 | 18995b98 | Nolan | *(buf + 19) = 4; /* protocol addr length (IPv4) */ |
66 | 18995b98 | Nolan | *(uint16_t *)(buf + 20) = htons(ARP_OP_REQUEST_REV); /* opcode */ |
67 | 18995b98 | Nolan | memcpy(buf + 22, mac_addr, 6); /* source hw addr */ |
68 | 18995b98 | Nolan | memset(buf + 28, 0x00, 4); /* source protocol addr */ |
69 | 18995b98 | Nolan | memcpy(buf + 32, mac_addr, 6); /* target hw addr */ |
70 | 18995b98 | Nolan | memset(buf + 38, 0x00, 4); /* target protocol addr */ |
71 | 18995b98 | Nolan | |
72 | 18995b98 | Nolan | /* Padding to get up to 60 bytes (ethernet min packet size, minus FCS). */
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73 | 18995b98 | Nolan | memset(buf + 42, 0x00, 18); |
74 | 18995b98 | Nolan | |
75 | 18995b98 | Nolan | return 60; /* len (FCS will be added by hardware) */ |
76 | a672b469 | aliguori | } |
77 | a672b469 | aliguori | |
78 | f401ca22 | Mark McLoughlin | static void qemu_announce_self_iter(NICState *nic, void *opaque) |
79 | a672b469 | aliguori | { |
80 | 18995b98 | Nolan | uint8_t buf[60];
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81 | f401ca22 | Mark McLoughlin | int len;
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82 | f401ca22 | Mark McLoughlin | |
83 | f401ca22 | Mark McLoughlin | len = announce_self_create(buf, nic->conf->macaddr.a); |
84 | f401ca22 | Mark McLoughlin | |
85 | b356f76d | Jason Wang | qemu_send_packet_raw(qemu_get_queue(nic), buf, len); |
86 | f401ca22 | Mark McLoughlin | } |
87 | f401ca22 | Mark McLoughlin | |
88 | f401ca22 | Mark McLoughlin | |
89 | f401ca22 | Mark McLoughlin | static void qemu_announce_self_once(void *opaque) |
90 | f401ca22 | Mark McLoughlin | { |
91 | ed8b330b | Gleb Natapov | static int count = SELF_ANNOUNCE_ROUNDS; |
92 | ed8b330b | Gleb Natapov | QEMUTimer *timer = *(QEMUTimer **)opaque; |
93 | a672b469 | aliguori | |
94 | f401ca22 | Mark McLoughlin | qemu_foreach_nic(qemu_announce_self_iter, NULL);
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95 | f401ca22 | Mark McLoughlin | |
96 | 18995b98 | Nolan | if (--count) {
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97 | 18995b98 | Nolan | /* delay 50ms, 150ms, 250ms, ... */
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98 | 7bd427d8 | Paolo Bonzini | qemu_mod_timer(timer, qemu_get_clock_ms(rt_clock) + |
99 | 18995b98 | Nolan | 50 + (SELF_ANNOUNCE_ROUNDS - count - 1) * 100); |
100 | ed8b330b | Gleb Natapov | } else {
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101 | ed8b330b | Gleb Natapov | qemu_del_timer(timer); |
102 | ed8b330b | Gleb Natapov | qemu_free_timer(timer); |
103 | ed8b330b | Gleb Natapov | } |
104 | ed8b330b | Gleb Natapov | } |
105 | ed8b330b | Gleb Natapov | |
106 | ed8b330b | Gleb Natapov | void qemu_announce_self(void) |
107 | ed8b330b | Gleb Natapov | { |
108 | ed8b330b | Gleb Natapov | static QEMUTimer *timer;
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109 | 7bd427d8 | Paolo Bonzini | timer = qemu_new_timer_ms(rt_clock, qemu_announce_self_once, &timer); |
110 | ed8b330b | Gleb Natapov | qemu_announce_self_once(&timer); |
111 | a672b469 | aliguori | } |
112 | a672b469 | aliguori | |
113 | a672b469 | aliguori | /***********************************************************/
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114 | a672b469 | aliguori | /* savevm/loadvm support */
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115 | a672b469 | aliguori | |
116 | a672b469 | aliguori | #define IO_BUF_SIZE 32768 |
117 | b3ea2bdb | Orit Wasserman | #define MAX_IOV_SIZE MIN(IOV_MAX, 64) |
118 | a672b469 | aliguori | |
119 | a672b469 | aliguori | struct QEMUFile {
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120 | 9229bf3c | Paolo Bonzini | const QEMUFileOps *ops;
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121 | a672b469 | aliguori | void *opaque;
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122 | a672b469 | aliguori | int is_write;
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123 | a672b469 | aliguori | |
124 | 1964a397 | Paolo Bonzini | int64_t bytes_xfer; |
125 | 1964a397 | Paolo Bonzini | int64_t xfer_limit; |
126 | 1964a397 | Paolo Bonzini | |
127 | 3f2d38fa | Paolo Bonzini | int64_t pos; /* start of buffer when writing, end of buffer
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128 | 3f2d38fa | Paolo Bonzini | when reading */
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129 | a672b469 | aliguori | int buf_index;
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130 | a672b469 | aliguori | int buf_size; /* 0 when writing */ |
131 | a672b469 | aliguori | uint8_t buf[IO_BUF_SIZE]; |
132 | a672b469 | aliguori | |
133 | b3ea2bdb | Orit Wasserman | struct iovec iov[MAX_IOV_SIZE];
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134 | b3ea2bdb | Orit Wasserman | unsigned int iovcnt; |
135 | b3ea2bdb | Orit Wasserman | |
136 | 3961b4dd | Juan Quintela | int last_error;
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137 | a672b469 | aliguori | }; |
138 | a672b469 | aliguori | |
139 | 7f79dd28 | Paolo Bonzini | typedef struct QEMUFileStdio |
140 | a672b469 | aliguori | { |
141 | 7f79dd28 | Paolo Bonzini | FILE *stdio_file; |
142 | a672b469 | aliguori | QEMUFile *file; |
143 | 7f79dd28 | Paolo Bonzini | } QEMUFileStdio; |
144 | a672b469 | aliguori | |
145 | a672b469 | aliguori | typedef struct QEMUFileSocket |
146 | a672b469 | aliguori | { |
147 | a672b469 | aliguori | int fd;
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148 | a672b469 | aliguori | QEMUFile *file; |
149 | a672b469 | aliguori | } QEMUFileSocket; |
150 | a672b469 | aliguori | |
151 | d7cd3694 | Stefan Hajnoczi | typedef struct { |
152 | d7cd3694 | Stefan Hajnoczi | Coroutine *co; |
153 | d7cd3694 | Stefan Hajnoczi | int fd;
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154 | d7cd3694 | Stefan Hajnoczi | } FDYieldUntilData; |
155 | d7cd3694 | Stefan Hajnoczi | |
156 | d7cd3694 | Stefan Hajnoczi | static void fd_coroutine_enter(void *opaque) |
157 | d7cd3694 | Stefan Hajnoczi | { |
158 | d7cd3694 | Stefan Hajnoczi | FDYieldUntilData *data = opaque; |
159 | d7cd3694 | Stefan Hajnoczi | qemu_set_fd_handler(data->fd, NULL, NULL, NULL); |
160 | d7cd3694 | Stefan Hajnoczi | qemu_coroutine_enter(data->co, NULL);
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161 | d7cd3694 | Stefan Hajnoczi | } |
162 | d7cd3694 | Stefan Hajnoczi | |
163 | d7cd3694 | Stefan Hajnoczi | /**
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164 | d7cd3694 | Stefan Hajnoczi | * Yield until a file descriptor becomes readable
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165 | d7cd3694 | Stefan Hajnoczi | *
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166 | d7cd3694 | Stefan Hajnoczi | * Note that this function clobbers the handlers for the file descriptor.
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167 | d7cd3694 | Stefan Hajnoczi | */
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168 | d7cd3694 | Stefan Hajnoczi | static void coroutine_fn yield_until_fd_readable(int fd) |
169 | d7cd3694 | Stefan Hajnoczi | { |
170 | d7cd3694 | Stefan Hajnoczi | FDYieldUntilData data; |
171 | d7cd3694 | Stefan Hajnoczi | |
172 | d7cd3694 | Stefan Hajnoczi | assert(qemu_in_coroutine()); |
173 | d7cd3694 | Stefan Hajnoczi | data.co = qemu_coroutine_self(); |
174 | d7cd3694 | Stefan Hajnoczi | data.fd = fd; |
175 | d7cd3694 | Stefan Hajnoczi | qemu_set_fd_handler(fd, fd_coroutine_enter, NULL, &data);
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176 | d7cd3694 | Stefan Hajnoczi | qemu_coroutine_yield(); |
177 | d7cd3694 | Stefan Hajnoczi | } |
178 | d7cd3694 | Stefan Hajnoczi | |
179 | 28085f7b | Orit Wasserman | static ssize_t socket_writev_buffer(void *opaque, struct iovec *iov, int iovcnt) |
180 | 28085f7b | Orit Wasserman | { |
181 | 28085f7b | Orit Wasserman | QEMUFileSocket *s = opaque; |
182 | 28085f7b | Orit Wasserman | ssize_t len; |
183 | 28085f7b | Orit Wasserman | ssize_t size = iov_size(iov, iovcnt); |
184 | 28085f7b | Orit Wasserman | |
185 | 28085f7b | Orit Wasserman | len = iov_send(s->fd, iov, iovcnt, 0, size);
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186 | 28085f7b | Orit Wasserman | if (len < size) {
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187 | 28085f7b | Orit Wasserman | len = -socket_error(); |
188 | 28085f7b | Orit Wasserman | } |
189 | 28085f7b | Orit Wasserman | return len;
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190 | 28085f7b | Orit Wasserman | } |
191 | 28085f7b | Orit Wasserman | |
192 | 70eb6330 | Paolo Bonzini | static int socket_get_fd(void *opaque) |
193 | 70eb6330 | Paolo Bonzini | { |
194 | 70eb6330 | Paolo Bonzini | QEMUFileSocket *s = opaque; |
195 | 70eb6330 | Paolo Bonzini | |
196 | 70eb6330 | Paolo Bonzini | return s->fd;
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197 | 70eb6330 | Paolo Bonzini | } |
198 | 70eb6330 | Paolo Bonzini | |
199 | a672b469 | aliguori | static int socket_get_buffer(void *opaque, uint8_t *buf, int64_t pos, int size) |
200 | a672b469 | aliguori | { |
201 | a672b469 | aliguori | QEMUFileSocket *s = opaque; |
202 | a672b469 | aliguori | ssize_t len; |
203 | a672b469 | aliguori | |
204 | 595ab641 | Paolo Bonzini | for (;;) {
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205 | 00aa0040 | Blue Swirl | len = qemu_recv(s->fd, buf, size, 0);
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206 | 595ab641 | Paolo Bonzini | if (len != -1) { |
207 | 595ab641 | Paolo Bonzini | break;
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208 | 595ab641 | Paolo Bonzini | } |
209 | 595ab641 | Paolo Bonzini | if (socket_error() == EAGAIN) {
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210 | d7cd3694 | Stefan Hajnoczi | yield_until_fd_readable(s->fd); |
211 | 595ab641 | Paolo Bonzini | } else if (socket_error() != EINTR) { |
212 | 595ab641 | Paolo Bonzini | break;
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213 | 595ab641 | Paolo Bonzini | } |
214 | 595ab641 | Paolo Bonzini | } |
215 | a672b469 | aliguori | |
216 | 595ab641 | Paolo Bonzini | if (len == -1) { |
217 | a672b469 | aliguori | len = -socket_error(); |
218 | 595ab641 | Paolo Bonzini | } |
219 | a672b469 | aliguori | return len;
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220 | a672b469 | aliguori | } |
221 | a672b469 | aliguori | |
222 | 0cc3f3cc | Paolo Bonzini | static int socket_put_buffer(void *opaque, const uint8_t *buf, int64_t pos, int size) |
223 | 0cc3f3cc | Paolo Bonzini | { |
224 | 0cc3f3cc | Paolo Bonzini | QEMUFileSocket *s = opaque; |
225 | 0cc3f3cc | Paolo Bonzini | ssize_t len; |
226 | 0cc3f3cc | Paolo Bonzini | |
227 | 0cc3f3cc | Paolo Bonzini | len = qemu_send_full(s->fd, buf, size, 0);
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228 | 0cc3f3cc | Paolo Bonzini | if (len < size) {
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229 | 0cc3f3cc | Paolo Bonzini | len = -socket_error(); |
230 | 0cc3f3cc | Paolo Bonzini | } |
231 | 0cc3f3cc | Paolo Bonzini | return len;
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232 | 0cc3f3cc | Paolo Bonzini | } |
233 | 0cc3f3cc | Paolo Bonzini | |
234 | a672b469 | aliguori | static int socket_close(void *opaque) |
235 | a672b469 | aliguori | { |
236 | a672b469 | aliguori | QEMUFileSocket *s = opaque; |
237 | ab52a824 | Paolo Bonzini | closesocket(s->fd); |
238 | 7267c094 | Anthony Liguori | g_free(s); |
239 | a672b469 | aliguori | return 0; |
240 | a672b469 | aliguori | } |
241 | a672b469 | aliguori | |
242 | 70eb6330 | Paolo Bonzini | static int stdio_get_fd(void *opaque) |
243 | 70eb6330 | Paolo Bonzini | { |
244 | 70eb6330 | Paolo Bonzini | QEMUFileStdio *s = opaque; |
245 | 70eb6330 | Paolo Bonzini | |
246 | 70eb6330 | Paolo Bonzini | return fileno(s->stdio_file);
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247 | 70eb6330 | Paolo Bonzini | } |
248 | 70eb6330 | Paolo Bonzini | |
249 | 7f79dd28 | Paolo Bonzini | static int stdio_put_buffer(void *opaque, const uint8_t *buf, int64_t pos, int size) |
250 | a672b469 | aliguori | { |
251 | 7f79dd28 | Paolo Bonzini | QEMUFileStdio *s = opaque; |
252 | 7f79dd28 | Paolo Bonzini | return fwrite(buf, 1, size, s->stdio_file); |
253 | a672b469 | aliguori | } |
254 | a672b469 | aliguori | |
255 | 7f79dd28 | Paolo Bonzini | static int stdio_get_buffer(void *opaque, uint8_t *buf, int64_t pos, int size) |
256 | a672b469 | aliguori | { |
257 | 7f79dd28 | Paolo Bonzini | QEMUFileStdio *s = opaque; |
258 | 7f79dd28 | Paolo Bonzini | FILE *fp = s->stdio_file; |
259 | 8a67ec4d | Uri Lublin | int bytes;
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260 | 8a67ec4d | Uri Lublin | |
261 | 595ab641 | Paolo Bonzini | for (;;) {
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262 | 8a67ec4d | Uri Lublin | clearerr(fp); |
263 | 8a67ec4d | Uri Lublin | bytes = fread(buf, 1, size, fp);
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264 | 595ab641 | Paolo Bonzini | if (bytes != 0 || !ferror(fp)) { |
265 | 595ab641 | Paolo Bonzini | break;
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266 | 595ab641 | Paolo Bonzini | } |
267 | 595ab641 | Paolo Bonzini | if (errno == EAGAIN) {
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268 | d7cd3694 | Stefan Hajnoczi | yield_until_fd_readable(fileno(fp)); |
269 | 595ab641 | Paolo Bonzini | } else if (errno != EINTR) { |
270 | 595ab641 | Paolo Bonzini | break;
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271 | 595ab641 | Paolo Bonzini | } |
272 | 595ab641 | Paolo Bonzini | } |
273 | 8a67ec4d | Uri Lublin | return bytes;
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274 | a672b469 | aliguori | } |
275 | a672b469 | aliguori | |
276 | 7f79dd28 | Paolo Bonzini | static int stdio_pclose(void *opaque) |
277 | 7f79dd28 | Paolo Bonzini | { |
278 | 7f79dd28 | Paolo Bonzini | QEMUFileStdio *s = opaque; |
279 | 41ef56e6 | Anthony Liguori | int ret;
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280 | 41ef56e6 | Anthony Liguori | ret = pclose(s->stdio_file); |
281 | 26f1af0a | Eduardo Habkost | if (ret == -1) { |
282 | 26f1af0a | Eduardo Habkost | ret = -errno; |
283 | 13c7b2da | Paolo Bonzini | } else if (!WIFEXITED(ret) || WEXITSTATUS(ret) != 0) { |
284 | 13c7b2da | Paolo Bonzini | /* close succeeded, but non-zero exit code: */
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285 | 13c7b2da | Paolo Bonzini | ret = -EIO; /* fake errno value */
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286 | 26f1af0a | Eduardo Habkost | } |
287 | 7267c094 | Anthony Liguori | g_free(s); |
288 | 41ef56e6 | Anthony Liguori | return ret;
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289 | 7f79dd28 | Paolo Bonzini | } |
290 | 7f79dd28 | Paolo Bonzini | |
291 | 7f79dd28 | Paolo Bonzini | static int stdio_fclose(void *opaque) |
292 | a672b469 | aliguori | { |
293 | 7f79dd28 | Paolo Bonzini | QEMUFileStdio *s = opaque; |
294 | 0e286705 | Eduardo Habkost | int ret = 0; |
295 | ce39ee31 | Paolo Bonzini | |
296 | cb88aa88 | Orit Wasserman | if (s->file->ops->put_buffer || s->file->ops->writev_buffer) {
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297 | ce39ee31 | Paolo Bonzini | int fd = fileno(s->stdio_file);
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298 | ce39ee31 | Paolo Bonzini | struct stat st;
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299 | ce39ee31 | Paolo Bonzini | |
300 | ce39ee31 | Paolo Bonzini | ret = fstat(fd, &st); |
301 | ce39ee31 | Paolo Bonzini | if (ret == 0 && S_ISREG(st.st_mode)) { |
302 | ce39ee31 | Paolo Bonzini | /*
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303 | ce39ee31 | Paolo Bonzini | * If the file handle is a regular file make sure the
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304 | ce39ee31 | Paolo Bonzini | * data is flushed to disk before signaling success.
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305 | ce39ee31 | Paolo Bonzini | */
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306 | ce39ee31 | Paolo Bonzini | ret = fsync(fd); |
307 | ce39ee31 | Paolo Bonzini | if (ret != 0) { |
308 | ce39ee31 | Paolo Bonzini | ret = -errno; |
309 | ce39ee31 | Paolo Bonzini | return ret;
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310 | ce39ee31 | Paolo Bonzini | } |
311 | ce39ee31 | Paolo Bonzini | } |
312 | ce39ee31 | Paolo Bonzini | } |
313 | 0e286705 | Eduardo Habkost | if (fclose(s->stdio_file) == EOF) { |
314 | 0e286705 | Eduardo Habkost | ret = -errno; |
315 | 0e286705 | Eduardo Habkost | } |
316 | 7267c094 | Anthony Liguori | g_free(s); |
317 | 0e286705 | Eduardo Habkost | return ret;
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318 | a672b469 | aliguori | } |
319 | a672b469 | aliguori | |
320 | 9229bf3c | Paolo Bonzini | static const QEMUFileOps stdio_pipe_read_ops = { |
321 | 70eb6330 | Paolo Bonzini | .get_fd = stdio_get_fd, |
322 | 9229bf3c | Paolo Bonzini | .get_buffer = stdio_get_buffer, |
323 | 9229bf3c | Paolo Bonzini | .close = stdio_pclose |
324 | 9229bf3c | Paolo Bonzini | }; |
325 | 9229bf3c | Paolo Bonzini | |
326 | 9229bf3c | Paolo Bonzini | static const QEMUFileOps stdio_pipe_write_ops = { |
327 | 70eb6330 | Paolo Bonzini | .get_fd = stdio_get_fd, |
328 | 9229bf3c | Paolo Bonzini | .put_buffer = stdio_put_buffer, |
329 | 9229bf3c | Paolo Bonzini | .close = stdio_pclose |
330 | 9229bf3c | Paolo Bonzini | }; |
331 | 9229bf3c | Paolo Bonzini | |
332 | 817b9ed5 | Paolo Bonzini | QEMUFile *qemu_popen_cmd(const char *command, const char *mode) |
333 | a672b469 | aliguori | { |
334 | 817b9ed5 | Paolo Bonzini | FILE *stdio_file; |
335 | 7f79dd28 | Paolo Bonzini | QEMUFileStdio *s; |
336 | a672b469 | aliguori | |
337 | 817b9ed5 | Paolo Bonzini | stdio_file = popen(command, mode); |
338 | 817b9ed5 | Paolo Bonzini | if (stdio_file == NULL) { |
339 | 817b9ed5 | Paolo Bonzini | return NULL; |
340 | 817b9ed5 | Paolo Bonzini | } |
341 | 817b9ed5 | Paolo Bonzini | |
342 | 817b9ed5 | Paolo Bonzini | if (mode == NULL || (mode[0] != 'r' && mode[0] != 'w') || mode[1] != 0) { |
343 | a672b469 | aliguori | fprintf(stderr, "qemu_popen: Argument validity check failed\n");
|
344 | a672b469 | aliguori | return NULL; |
345 | a672b469 | aliguori | } |
346 | a672b469 | aliguori | |
347 | 7267c094 | Anthony Liguori | s = g_malloc0(sizeof(QEMUFileStdio));
|
348 | a672b469 | aliguori | |
349 | 7f79dd28 | Paolo Bonzini | s->stdio_file = stdio_file; |
350 | a672b469 | aliguori | |
351 | a672b469 | aliguori | if(mode[0] == 'r') { |
352 | 9229bf3c | Paolo Bonzini | s->file = qemu_fopen_ops(s, &stdio_pipe_read_ops); |
353 | a672b469 | aliguori | } else {
|
354 | 9229bf3c | Paolo Bonzini | s->file = qemu_fopen_ops(s, &stdio_pipe_write_ops); |
355 | a672b469 | aliguori | } |
356 | a672b469 | aliguori | return s->file;
|
357 | a672b469 | aliguori | } |
358 | a672b469 | aliguori | |
359 | 9229bf3c | Paolo Bonzini | static const QEMUFileOps stdio_file_read_ops = { |
360 | 70eb6330 | Paolo Bonzini | .get_fd = stdio_get_fd, |
361 | 9229bf3c | Paolo Bonzini | .get_buffer = stdio_get_buffer, |
362 | 9229bf3c | Paolo Bonzini | .close = stdio_fclose |
363 | 9229bf3c | Paolo Bonzini | }; |
364 | 9229bf3c | Paolo Bonzini | |
365 | 9229bf3c | Paolo Bonzini | static const QEMUFileOps stdio_file_write_ops = { |
366 | 70eb6330 | Paolo Bonzini | .get_fd = stdio_get_fd, |
367 | 9229bf3c | Paolo Bonzini | .put_buffer = stdio_put_buffer, |
368 | 9229bf3c | Paolo Bonzini | .close = stdio_fclose |
369 | 9229bf3c | Paolo Bonzini | }; |
370 | 9229bf3c | Paolo Bonzini | |
371 | 5ac1fad3 | Paolo Bonzini | QEMUFile *qemu_fdopen(int fd, const char *mode) |
372 | 5ac1fad3 | Paolo Bonzini | { |
373 | 5ac1fad3 | Paolo Bonzini | QEMUFileStdio *s; |
374 | 5ac1fad3 | Paolo Bonzini | |
375 | 5ac1fad3 | Paolo Bonzini | if (mode == NULL || |
376 | 5ac1fad3 | Paolo Bonzini | (mode[0] != 'r' && mode[0] != 'w') || |
377 | 5ac1fad3 | Paolo Bonzini | mode[1] != 'b' || mode[2] != 0) { |
378 | 5ac1fad3 | Paolo Bonzini | fprintf(stderr, "qemu_fdopen: Argument validity check failed\n");
|
379 | 5ac1fad3 | Paolo Bonzini | return NULL; |
380 | 5ac1fad3 | Paolo Bonzini | } |
381 | 5ac1fad3 | Paolo Bonzini | |
382 | 7267c094 | Anthony Liguori | s = g_malloc0(sizeof(QEMUFileStdio));
|
383 | 5ac1fad3 | Paolo Bonzini | s->stdio_file = fdopen(fd, mode); |
384 | 5ac1fad3 | Paolo Bonzini | if (!s->stdio_file)
|
385 | 5ac1fad3 | Paolo Bonzini | goto fail;
|
386 | 5ac1fad3 | Paolo Bonzini | |
387 | 5ac1fad3 | Paolo Bonzini | if(mode[0] == 'r') { |
388 | 9229bf3c | Paolo Bonzini | s->file = qemu_fopen_ops(s, &stdio_file_read_ops); |
389 | 5ac1fad3 | Paolo Bonzini | } else {
|
390 | 9229bf3c | Paolo Bonzini | s->file = qemu_fopen_ops(s, &stdio_file_write_ops); |
391 | 5ac1fad3 | Paolo Bonzini | } |
392 | 5ac1fad3 | Paolo Bonzini | return s->file;
|
393 | 5ac1fad3 | Paolo Bonzini | |
394 | 5ac1fad3 | Paolo Bonzini | fail:
|
395 | 7267c094 | Anthony Liguori | g_free(s); |
396 | 5ac1fad3 | Paolo Bonzini | return NULL; |
397 | 5ac1fad3 | Paolo Bonzini | } |
398 | 5ac1fad3 | Paolo Bonzini | |
399 | 9229bf3c | Paolo Bonzini | static const QEMUFileOps socket_read_ops = { |
400 | 70eb6330 | Paolo Bonzini | .get_fd = socket_get_fd, |
401 | 9229bf3c | Paolo Bonzini | .get_buffer = socket_get_buffer, |
402 | 9229bf3c | Paolo Bonzini | .close = socket_close |
403 | 9229bf3c | Paolo Bonzini | }; |
404 | 9229bf3c | Paolo Bonzini | |
405 | 0cc3f3cc | Paolo Bonzini | static const QEMUFileOps socket_write_ops = { |
406 | 0cc3f3cc | Paolo Bonzini | .get_fd = socket_get_fd, |
407 | 0cc3f3cc | Paolo Bonzini | .put_buffer = socket_put_buffer, |
408 | 28085f7b | Orit Wasserman | .writev_buffer = socket_writev_buffer, |
409 | 0cc3f3cc | Paolo Bonzini | .close = socket_close |
410 | 0cc3f3cc | Paolo Bonzini | }; |
411 | 0cc3f3cc | Paolo Bonzini | |
412 | 0cc3f3cc | Paolo Bonzini | QEMUFile *qemu_fopen_socket(int fd, const char *mode) |
413 | a672b469 | aliguori | { |
414 | 7267c094 | Anthony Liguori | QEMUFileSocket *s = g_malloc0(sizeof(QEMUFileSocket));
|
415 | a672b469 | aliguori | |
416 | 0cc3f3cc | Paolo Bonzini | if (mode == NULL || |
417 | 0cc3f3cc | Paolo Bonzini | (mode[0] != 'r' && mode[0] != 'w') || |
418 | 0cc3f3cc | Paolo Bonzini | mode[1] != 'b' || mode[2] != 0) { |
419 | 0cc3f3cc | Paolo Bonzini | fprintf(stderr, "qemu_fopen: Argument validity check failed\n");
|
420 | 0cc3f3cc | Paolo Bonzini | return NULL; |
421 | 0cc3f3cc | Paolo Bonzini | } |
422 | 0cc3f3cc | Paolo Bonzini | |
423 | a672b469 | aliguori | s->fd = fd; |
424 | 0cc3f3cc | Paolo Bonzini | if (mode[0] == 'w') { |
425 | f8bbc128 | Paolo Bonzini | socket_set_block(s->fd); |
426 | 0cc3f3cc | Paolo Bonzini | s->file = qemu_fopen_ops(s, &socket_write_ops); |
427 | 0cc3f3cc | Paolo Bonzini | } else {
|
428 | 0cc3f3cc | Paolo Bonzini | s->file = qemu_fopen_ops(s, &socket_read_ops); |
429 | 0cc3f3cc | Paolo Bonzini | } |
430 | a672b469 | aliguori | return s->file;
|
431 | a672b469 | aliguori | } |
432 | a672b469 | aliguori | |
433 | a672b469 | aliguori | QEMUFile *qemu_fopen(const char *filename, const char *mode) |
434 | a672b469 | aliguori | { |
435 | a672b469 | aliguori | QEMUFileStdio *s; |
436 | a672b469 | aliguori | |
437 | 7f79dd28 | Paolo Bonzini | if (mode == NULL || |
438 | 7f79dd28 | Paolo Bonzini | (mode[0] != 'r' && mode[0] != 'w') || |
439 | 7f79dd28 | Paolo Bonzini | mode[1] != 'b' || mode[2] != 0) { |
440 | 090414a3 | Blue Swirl | fprintf(stderr, "qemu_fopen: Argument validity check failed\n");
|
441 | 7f79dd28 | Paolo Bonzini | return NULL; |
442 | 7f79dd28 | Paolo Bonzini | } |
443 | 7f79dd28 | Paolo Bonzini | |
444 | 7267c094 | Anthony Liguori | s = g_malloc0(sizeof(QEMUFileStdio));
|
445 | a672b469 | aliguori | |
446 | 7f79dd28 | Paolo Bonzini | s->stdio_file = fopen(filename, mode); |
447 | 7f79dd28 | Paolo Bonzini | if (!s->stdio_file)
|
448 | a672b469 | aliguori | goto fail;
|
449 | c163b5ca | lirans@il.ibm.com | |
450 | 7f79dd28 | Paolo Bonzini | if(mode[0] == 'w') { |
451 | 9229bf3c | Paolo Bonzini | s->file = qemu_fopen_ops(s, &stdio_file_write_ops); |
452 | 7f79dd28 | Paolo Bonzini | } else {
|
453 | 9229bf3c | Paolo Bonzini | s->file = qemu_fopen_ops(s, &stdio_file_read_ops); |
454 | 7f79dd28 | Paolo Bonzini | } |
455 | 7f79dd28 | Paolo Bonzini | return s->file;
|
456 | a672b469 | aliguori | fail:
|
457 | 7267c094 | Anthony Liguori | g_free(s); |
458 | a672b469 | aliguori | return NULL; |
459 | a672b469 | aliguori | } |
460 | a672b469 | aliguori | |
461 | 178e08a5 | aliguori | static int block_put_buffer(void *opaque, const uint8_t *buf, |
462 | a672b469 | aliguori | int64_t pos, int size)
|
463 | a672b469 | aliguori | { |
464 | 45566e9c | Christoph Hellwig | bdrv_save_vmstate(opaque, buf, pos, size); |
465 | a672b469 | aliguori | return size;
|
466 | a672b469 | aliguori | } |
467 | a672b469 | aliguori | |
468 | 178e08a5 | aliguori | static int block_get_buffer(void *opaque, uint8_t *buf, int64_t pos, int size) |
469 | a672b469 | aliguori | { |
470 | 45566e9c | Christoph Hellwig | return bdrv_load_vmstate(opaque, buf, pos, size);
|
471 | a672b469 | aliguori | } |
472 | a672b469 | aliguori | |
473 | a672b469 | aliguori | static int bdrv_fclose(void *opaque) |
474 | a672b469 | aliguori | { |
475 | ad492c92 | Paolo Bonzini | return bdrv_flush(opaque);
|
476 | a672b469 | aliguori | } |
477 | a672b469 | aliguori | |
478 | 9229bf3c | Paolo Bonzini | static const QEMUFileOps bdrv_read_ops = { |
479 | 9229bf3c | Paolo Bonzini | .get_buffer = block_get_buffer, |
480 | 9229bf3c | Paolo Bonzini | .close = bdrv_fclose |
481 | 9229bf3c | Paolo Bonzini | }; |
482 | 9229bf3c | Paolo Bonzini | |
483 | 9229bf3c | Paolo Bonzini | static const QEMUFileOps bdrv_write_ops = { |
484 | 9229bf3c | Paolo Bonzini | .put_buffer = block_put_buffer, |
485 | 9229bf3c | Paolo Bonzini | .close = bdrv_fclose |
486 | 9229bf3c | Paolo Bonzini | }; |
487 | 9229bf3c | Paolo Bonzini | |
488 | 45566e9c | Christoph Hellwig | static QEMUFile *qemu_fopen_bdrv(BlockDriverState *bs, int is_writable) |
489 | a672b469 | aliguori | { |
490 | a672b469 | aliguori | if (is_writable)
|
491 | 9229bf3c | Paolo Bonzini | return qemu_fopen_ops(bs, &bdrv_write_ops);
|
492 | 9229bf3c | Paolo Bonzini | return qemu_fopen_ops(bs, &bdrv_read_ops);
|
493 | a672b469 | aliguori | } |
494 | a672b469 | aliguori | |
495 | 9229bf3c | Paolo Bonzini | QEMUFile *qemu_fopen_ops(void *opaque, const QEMUFileOps *ops) |
496 | a672b469 | aliguori | { |
497 | a672b469 | aliguori | QEMUFile *f; |
498 | a672b469 | aliguori | |
499 | 7267c094 | Anthony Liguori | f = g_malloc0(sizeof(QEMUFile));
|
500 | a672b469 | aliguori | |
501 | a672b469 | aliguori | f->opaque = opaque; |
502 | 9229bf3c | Paolo Bonzini | f->ops = ops; |
503 | a672b469 | aliguori | f->is_write = 0;
|
504 | a672b469 | aliguori | return f;
|
505 | a672b469 | aliguori | } |
506 | a672b469 | aliguori | |
507 | 624b9cc2 | Juan Quintela | int qemu_file_get_error(QEMUFile *f)
|
508 | a672b469 | aliguori | { |
509 | 3961b4dd | Juan Quintela | return f->last_error;
|
510 | a672b469 | aliguori | } |
511 | a672b469 | aliguori | |
512 | 05f28b83 | Paolo Bonzini | static void qemu_file_set_error(QEMUFile *f, int ret) |
513 | 4dabe248 | aliguori | { |
514 | afe41931 | Juan Quintela | if (f->last_error == 0) { |
515 | afe41931 | Juan Quintela | f->last_error = ret; |
516 | afe41931 | Juan Quintela | } |
517 | 4dabe248 | aliguori | } |
518 | 4dabe248 | aliguori | |
519 | cb88aa88 | Orit Wasserman | /**
|
520 | cb88aa88 | Orit Wasserman | * Flushes QEMUFile buffer
|
521 | d82ca915 | Eduardo Habkost | *
|
522 | cb88aa88 | Orit Wasserman | * If there is writev_buffer QEMUFileOps it uses it otherwise uses
|
523 | cb88aa88 | Orit Wasserman | * put_buffer ops.
|
524 | d82ca915 | Eduardo Habkost | */
|
525 | 05f28b83 | Paolo Bonzini | static void qemu_fflush(QEMUFile *f) |
526 | a672b469 | aliguori | { |
527 | cb88aa88 | Orit Wasserman | ssize_t ret = 0;
|
528 | cb88aa88 | Orit Wasserman | int i = 0; |
529 | 7311bea3 | Juan Quintela | |
530 | cb88aa88 | Orit Wasserman | if (!f->ops->writev_buffer && !f->ops->put_buffer) {
|
531 | 93bf2104 | Paolo Bonzini | return;
|
532 | 93bf2104 | Paolo Bonzini | } |
533 | cb88aa88 | Orit Wasserman | |
534 | cb88aa88 | Orit Wasserman | if (f->is_write && f->iovcnt > 0) { |
535 | cb88aa88 | Orit Wasserman | if (f->ops->writev_buffer) {
|
536 | cb88aa88 | Orit Wasserman | ret = f->ops->writev_buffer(f->opaque, f->iov, f->iovcnt); |
537 | cb88aa88 | Orit Wasserman | if (ret >= 0) { |
538 | cb88aa88 | Orit Wasserman | f->pos += ret; |
539 | cb88aa88 | Orit Wasserman | } |
540 | cb88aa88 | Orit Wasserman | } else {
|
541 | cb88aa88 | Orit Wasserman | for (i = 0; i < f->iovcnt && ret >= 0; i++) { |
542 | cb88aa88 | Orit Wasserman | ret = f->ops->put_buffer(f->opaque, f->iov[i].iov_base, f->pos, |
543 | cb88aa88 | Orit Wasserman | f->iov[i].iov_len); |
544 | cb88aa88 | Orit Wasserman | if (ret >= 0) { |
545 | cb88aa88 | Orit Wasserman | f->pos += ret; |
546 | cb88aa88 | Orit Wasserman | } |
547 | cb88aa88 | Orit Wasserman | } |
548 | 7311bea3 | Juan Quintela | } |
549 | a672b469 | aliguori | f->buf_index = 0;
|
550 | b3ea2bdb | Orit Wasserman | f->iovcnt = 0;
|
551 | a672b469 | aliguori | } |
552 | 93bf2104 | Paolo Bonzini | if (ret < 0) { |
553 | 93bf2104 | Paolo Bonzini | qemu_file_set_error(f, ret); |
554 | 93bf2104 | Paolo Bonzini | } |
555 | a672b469 | aliguori | } |
556 | a672b469 | aliguori | |
557 | a672b469 | aliguori | static void qemu_fill_buffer(QEMUFile *f) |
558 | a672b469 | aliguori | { |
559 | a672b469 | aliguori | int len;
|
560 | 0046c45b | Juan Quintela | int pending;
|
561 | a672b469 | aliguori | |
562 | 9229bf3c | Paolo Bonzini | if (!f->ops->get_buffer)
|
563 | a672b469 | aliguori | return;
|
564 | a672b469 | aliguori | |
565 | a672b469 | aliguori | if (f->is_write)
|
566 | a672b469 | aliguori | abort(); |
567 | a672b469 | aliguori | |
568 | 0046c45b | Juan Quintela | pending = f->buf_size - f->buf_index; |
569 | 0046c45b | Juan Quintela | if (pending > 0) { |
570 | 0046c45b | Juan Quintela | memmove(f->buf, f->buf + f->buf_index, pending); |
571 | 0046c45b | Juan Quintela | } |
572 | 0046c45b | Juan Quintela | f->buf_index = 0;
|
573 | 0046c45b | Juan Quintela | f->buf_size = pending; |
574 | 0046c45b | Juan Quintela | |
575 | 3f2d38fa | Paolo Bonzini | len = f->ops->get_buffer(f->opaque, f->buf + pending, f->pos, |
576 | 0046c45b | Juan Quintela | IO_BUF_SIZE - pending); |
577 | a672b469 | aliguori | if (len > 0) { |
578 | 0046c45b | Juan Quintela | f->buf_size += len; |
579 | 3f2d38fa | Paolo Bonzini | f->pos += len; |
580 | fa39a30f | Juan Quintela | } else if (len == 0) { |
581 | 02c4a051 | Juan Quintela | qemu_file_set_error(f, -EIO); |
582 | a672b469 | aliguori | } else if (len != -EAGAIN) |
583 | c29110d5 | Eduardo Habkost | qemu_file_set_error(f, len); |
584 | a672b469 | aliguori | } |
585 | a672b469 | aliguori | |
586 | 70eb6330 | Paolo Bonzini | int qemu_get_fd(QEMUFile *f)
|
587 | 70eb6330 | Paolo Bonzini | { |
588 | 70eb6330 | Paolo Bonzini | if (f->ops->get_fd) {
|
589 | 70eb6330 | Paolo Bonzini | return f->ops->get_fd(f->opaque);
|
590 | 70eb6330 | Paolo Bonzini | } |
591 | 70eb6330 | Paolo Bonzini | return -1; |
592 | 70eb6330 | Paolo Bonzini | } |
593 | 70eb6330 | Paolo Bonzini | |
594 | d82ca915 | Eduardo Habkost | /** Closes the file
|
595 | d82ca915 | Eduardo Habkost | *
|
596 | d82ca915 | Eduardo Habkost | * Returns negative error value if any error happened on previous operations or
|
597 | d82ca915 | Eduardo Habkost | * while closing the file. Returns 0 or positive number on success.
|
598 | d82ca915 | Eduardo Habkost | *
|
599 | d82ca915 | Eduardo Habkost | * The meaning of return value on success depends on the specific backend
|
600 | d82ca915 | Eduardo Habkost | * being used.
|
601 | d82ca915 | Eduardo Habkost | */
|
602 | d82ca915 | Eduardo Habkost | int qemu_fclose(QEMUFile *f)
|
603 | d82ca915 | Eduardo Habkost | { |
604 | 29eee86f | Juan Quintela | int ret;
|
605 | 93bf2104 | Paolo Bonzini | qemu_fflush(f); |
606 | 93bf2104 | Paolo Bonzini | ret = qemu_file_get_error(f); |
607 | 7311bea3 | Juan Quintela | |
608 | 9229bf3c | Paolo Bonzini | if (f->ops->close) {
|
609 | 9229bf3c | Paolo Bonzini | int ret2 = f->ops->close(f->opaque);
|
610 | 29eee86f | Juan Quintela | if (ret >= 0) { |
611 | 29eee86f | Juan Quintela | ret = ret2; |
612 | 29eee86f | Juan Quintela | } |
613 | 7311bea3 | Juan Quintela | } |
614 | d82ca915 | Eduardo Habkost | /* If any error was spotted before closing, we should report it
|
615 | d82ca915 | Eduardo Habkost | * instead of the close() return value.
|
616 | d82ca915 | Eduardo Habkost | */
|
617 | d82ca915 | Eduardo Habkost | if (f->last_error) {
|
618 | d82ca915 | Eduardo Habkost | ret = f->last_error; |
619 | d82ca915 | Eduardo Habkost | } |
620 | 7267c094 | Anthony Liguori | g_free(f); |
621 | a672b469 | aliguori | return ret;
|
622 | a672b469 | aliguori | } |
623 | a672b469 | aliguori | |
624 | b3ea2bdb | Orit Wasserman | static void add_to_iovec(QEMUFile *f, const uint8_t *buf, int size) |
625 | b3ea2bdb | Orit Wasserman | { |
626 | b3ea2bdb | Orit Wasserman | /* check for adjacent buffer and coalesce them */
|
627 | b3ea2bdb | Orit Wasserman | if (f->iovcnt > 0 && buf == f->iov[f->iovcnt - 1].iov_base + |
628 | b3ea2bdb | Orit Wasserman | f->iov[f->iovcnt - 1].iov_len) {
|
629 | b3ea2bdb | Orit Wasserman | f->iov[f->iovcnt - 1].iov_len += size;
|
630 | b3ea2bdb | Orit Wasserman | } else {
|
631 | b3ea2bdb | Orit Wasserman | f->iov[f->iovcnt].iov_base = (uint8_t *)buf; |
632 | b3ea2bdb | Orit Wasserman | f->iov[f->iovcnt++].iov_len = size; |
633 | b3ea2bdb | Orit Wasserman | } |
634 | b3ea2bdb | Orit Wasserman | } |
635 | b3ea2bdb | Orit Wasserman | |
636 | 6181ec24 | Orit Wasserman | void qemu_put_buffer_async(QEMUFile *f, const uint8_t *buf, int size) |
637 | 6181ec24 | Orit Wasserman | { |
638 | 6181ec24 | Orit Wasserman | if (f->last_error) {
|
639 | 6181ec24 | Orit Wasserman | return;
|
640 | 6181ec24 | Orit Wasserman | } |
641 | 6181ec24 | Orit Wasserman | |
642 | 6181ec24 | Orit Wasserman | if (f->is_write == 0 && f->buf_index > 0) { |
643 | 6181ec24 | Orit Wasserman | fprintf(stderr, |
644 | 6181ec24 | Orit Wasserman | "Attempted to write to buffer while read buffer is not empty\n");
|
645 | 6181ec24 | Orit Wasserman | abort(); |
646 | 6181ec24 | Orit Wasserman | } |
647 | 6181ec24 | Orit Wasserman | |
648 | 6181ec24 | Orit Wasserman | add_to_iovec(f, buf, size); |
649 | 6181ec24 | Orit Wasserman | |
650 | 6181ec24 | Orit Wasserman | f->is_write = 1;
|
651 | 6181ec24 | Orit Wasserman | f->bytes_xfer += size; |
652 | 6181ec24 | Orit Wasserman | |
653 | 6181ec24 | Orit Wasserman | if (f->buf_index >= IO_BUF_SIZE || f->iovcnt >= MAX_IOV_SIZE) {
|
654 | 6181ec24 | Orit Wasserman | qemu_fflush(f); |
655 | 6181ec24 | Orit Wasserman | } |
656 | 6181ec24 | Orit Wasserman | } |
657 | 6181ec24 | Orit Wasserman | |
658 | a672b469 | aliguori | void qemu_put_buffer(QEMUFile *f, const uint8_t *buf, int size) |
659 | a672b469 | aliguori | { |
660 | a672b469 | aliguori | int l;
|
661 | a672b469 | aliguori | |
662 | c10682cb | Juan Quintela | if (f->last_error) {
|
663 | c10682cb | Juan Quintela | return;
|
664 | c10682cb | Juan Quintela | } |
665 | c10682cb | Juan Quintela | |
666 | c10682cb | Juan Quintela | if (f->is_write == 0 && f->buf_index > 0) { |
667 | a672b469 | aliguori | fprintf(stderr, |
668 | a672b469 | aliguori | "Attempted to write to buffer while read buffer is not empty\n");
|
669 | a672b469 | aliguori | abort(); |
670 | a672b469 | aliguori | } |
671 | a672b469 | aliguori | |
672 | c10682cb | Juan Quintela | while (size > 0) { |
673 | a672b469 | aliguori | l = IO_BUF_SIZE - f->buf_index; |
674 | a672b469 | aliguori | if (l > size)
|
675 | a672b469 | aliguori | l = size; |
676 | a672b469 | aliguori | memcpy(f->buf + f->buf_index, buf, l); |
677 | a672b469 | aliguori | f->is_write = 1;
|
678 | a672b469 | aliguori | f->buf_index += l; |
679 | 6181ec24 | Orit Wasserman | qemu_put_buffer_async(f, f->buf + (f->buf_index - l), l); |
680 | 6181ec24 | Orit Wasserman | if (qemu_file_get_error(f)) {
|
681 | 6181ec24 | Orit Wasserman | break;
|
682 | 6181ec24 | Orit Wasserman | } |
683 | a672b469 | aliguori | buf += l; |
684 | a672b469 | aliguori | size -= l; |
685 | a672b469 | aliguori | } |
686 | a672b469 | aliguori | } |
687 | a672b469 | aliguori | |
688 | a672b469 | aliguori | void qemu_put_byte(QEMUFile *f, int v) |
689 | a672b469 | aliguori | { |
690 | c10682cb | Juan Quintela | if (f->last_error) {
|
691 | c10682cb | Juan Quintela | return;
|
692 | c10682cb | Juan Quintela | } |
693 | c10682cb | Juan Quintela | |
694 | c10682cb | Juan Quintela | if (f->is_write == 0 && f->buf_index > 0) { |
695 | a672b469 | aliguori | fprintf(stderr, |
696 | a672b469 | aliguori | "Attempted to write to buffer while read buffer is not empty\n");
|
697 | a672b469 | aliguori | abort(); |
698 | a672b469 | aliguori | } |
699 | a672b469 | aliguori | |
700 | a672b469 | aliguori | f->buf[f->buf_index++] = v; |
701 | a672b469 | aliguori | f->is_write = 1;
|
702 | 7d8a30bb | Orit Wasserman | f->bytes_xfer++; |
703 | 7d8a30bb | Orit Wasserman | |
704 | b3ea2bdb | Orit Wasserman | add_to_iovec(f, f->buf + (f->buf_index - 1), 1); |
705 | b3ea2bdb | Orit Wasserman | |
706 | b3ea2bdb | Orit Wasserman | if (f->buf_index >= IO_BUF_SIZE || f->iovcnt >= MAX_IOV_SIZE) {
|
707 | 93bf2104 | Paolo Bonzini | qemu_fflush(f); |
708 | 7311bea3 | Juan Quintela | } |
709 | a672b469 | aliguori | } |
710 | a672b469 | aliguori | |
711 | c6380724 | Juan Quintela | static void qemu_file_skip(QEMUFile *f, int size) |
712 | a672b469 | aliguori | { |
713 | c6380724 | Juan Quintela | if (f->buf_index + size <= f->buf_size) {
|
714 | c6380724 | Juan Quintela | f->buf_index += size; |
715 | c6380724 | Juan Quintela | } |
716 | c6380724 | Juan Quintela | } |
717 | c6380724 | Juan Quintela | |
718 | c6380724 | Juan Quintela | static int qemu_peek_buffer(QEMUFile *f, uint8_t *buf, int size, size_t offset) |
719 | a672b469 | aliguori | { |
720 | c6380724 | Juan Quintela | int pending;
|
721 | c6380724 | Juan Quintela | int index;
|
722 | a672b469 | aliguori | |
723 | b9ce1454 | Juan Quintela | if (f->is_write) {
|
724 | a672b469 | aliguori | abort(); |
725 | b9ce1454 | Juan Quintela | } |
726 | a672b469 | aliguori | |
727 | c6380724 | Juan Quintela | index = f->buf_index + offset; |
728 | c6380724 | Juan Quintela | pending = f->buf_size - index; |
729 | c6380724 | Juan Quintela | if (pending < size) {
|
730 | c6380724 | Juan Quintela | qemu_fill_buffer(f); |
731 | c6380724 | Juan Quintela | index = f->buf_index + offset; |
732 | c6380724 | Juan Quintela | pending = f->buf_size - index; |
733 | c6380724 | Juan Quintela | } |
734 | c6380724 | Juan Quintela | |
735 | c6380724 | Juan Quintela | if (pending <= 0) { |
736 | c6380724 | Juan Quintela | return 0; |
737 | c6380724 | Juan Quintela | } |
738 | c6380724 | Juan Quintela | if (size > pending) {
|
739 | c6380724 | Juan Quintela | size = pending; |
740 | c6380724 | Juan Quintela | } |
741 | c6380724 | Juan Quintela | |
742 | c6380724 | Juan Quintela | memcpy(buf, f->buf + index, size); |
743 | c6380724 | Juan Quintela | return size;
|
744 | c6380724 | Juan Quintela | } |
745 | c6380724 | Juan Quintela | |
746 | c6380724 | Juan Quintela | int qemu_get_buffer(QEMUFile *f, uint8_t *buf, int size) |
747 | c6380724 | Juan Quintela | { |
748 | c6380724 | Juan Quintela | int pending = size;
|
749 | c6380724 | Juan Quintela | int done = 0; |
750 | c6380724 | Juan Quintela | |
751 | c6380724 | Juan Quintela | while (pending > 0) { |
752 | c6380724 | Juan Quintela | int res;
|
753 | c6380724 | Juan Quintela | |
754 | c6380724 | Juan Quintela | res = qemu_peek_buffer(f, buf, pending, 0);
|
755 | c6380724 | Juan Quintela | if (res == 0) { |
756 | c6380724 | Juan Quintela | return done;
|
757 | a672b469 | aliguori | } |
758 | c6380724 | Juan Quintela | qemu_file_skip(f, res); |
759 | c6380724 | Juan Quintela | buf += res; |
760 | c6380724 | Juan Quintela | pending -= res; |
761 | c6380724 | Juan Quintela | done += res; |
762 | a672b469 | aliguori | } |
763 | c6380724 | Juan Quintela | return done;
|
764 | a672b469 | aliguori | } |
765 | a672b469 | aliguori | |
766 | c6380724 | Juan Quintela | static int qemu_peek_byte(QEMUFile *f, int offset) |
767 | 811814bd | Juan Quintela | { |
768 | c6380724 | Juan Quintela | int index = f->buf_index + offset;
|
769 | c6380724 | Juan Quintela | |
770 | b9ce1454 | Juan Quintela | if (f->is_write) {
|
771 | 811814bd | Juan Quintela | abort(); |
772 | b9ce1454 | Juan Quintela | } |
773 | 811814bd | Juan Quintela | |
774 | c6380724 | Juan Quintela | if (index >= f->buf_size) {
|
775 | 811814bd | Juan Quintela | qemu_fill_buffer(f); |
776 | c6380724 | Juan Quintela | index = f->buf_index + offset; |
777 | c6380724 | Juan Quintela | if (index >= f->buf_size) {
|
778 | 811814bd | Juan Quintela | return 0; |
779 | b9ce1454 | Juan Quintela | } |
780 | 811814bd | Juan Quintela | } |
781 | c6380724 | Juan Quintela | return f->buf[index];
|
782 | 811814bd | Juan Quintela | } |
783 | 811814bd | Juan Quintela | |
784 | a672b469 | aliguori | int qemu_get_byte(QEMUFile *f)
|
785 | a672b469 | aliguori | { |
786 | 65f3bb3d | Juan Quintela | int result;
|
787 | a672b469 | aliguori | |
788 | c6380724 | Juan Quintela | result = qemu_peek_byte(f, 0);
|
789 | c6380724 | Juan Quintela | qemu_file_skip(f, 1);
|
790 | 65f3bb3d | Juan Quintela | return result;
|
791 | a672b469 | aliguori | } |
792 | a672b469 | aliguori | |
793 | ad55ab42 | Stefan Hajnoczi | int64_t qemu_ftell(QEMUFile *f) |
794 | a672b469 | aliguori | { |
795 | 3f2d38fa | Paolo Bonzini | qemu_fflush(f); |
796 | 3f2d38fa | Paolo Bonzini | return f->pos;
|
797 | a672b469 | aliguori | } |
798 | a672b469 | aliguori | |
799 | a672b469 | aliguori | int qemu_file_rate_limit(QEMUFile *f)
|
800 | a672b469 | aliguori | { |
801 | 1964a397 | Paolo Bonzini | if (qemu_file_get_error(f)) {
|
802 | 1964a397 | Paolo Bonzini | return 1; |
803 | 1964a397 | Paolo Bonzini | } |
804 | 1964a397 | Paolo Bonzini | if (f->xfer_limit > 0 && f->bytes_xfer > f->xfer_limit) { |
805 | 1964a397 | Paolo Bonzini | return 1; |
806 | 1964a397 | Paolo Bonzini | } |
807 | a672b469 | aliguori | return 0; |
808 | a672b469 | aliguori | } |
809 | a672b469 | aliguori | |
810 | 3d002df3 | Michael S. Tsirkin | int64_t qemu_file_get_rate_limit(QEMUFile *f) |
811 | c163b5ca | lirans@il.ibm.com | { |
812 | 1964a397 | Paolo Bonzini | return f->xfer_limit;
|
813 | c163b5ca | lirans@il.ibm.com | } |
814 | c163b5ca | lirans@il.ibm.com | |
815 | 1964a397 | Paolo Bonzini | void qemu_file_set_rate_limit(QEMUFile *f, int64_t limit)
|
816 | 19629537 | Glauber Costa | { |
817 | 1964a397 | Paolo Bonzini | f->xfer_limit = limit; |
818 | 1964a397 | Paolo Bonzini | } |
819 | 19629537 | Glauber Costa | |
820 | 1964a397 | Paolo Bonzini | void qemu_file_reset_rate_limit(QEMUFile *f)
|
821 | 1964a397 | Paolo Bonzini | { |
822 | 1964a397 | Paolo Bonzini | f->bytes_xfer = 0;
|
823 | 19629537 | Glauber Costa | } |
824 | 19629537 | Glauber Costa | |
825 | a672b469 | aliguori | void qemu_put_be16(QEMUFile *f, unsigned int v) |
826 | a672b469 | aliguori | { |
827 | a672b469 | aliguori | qemu_put_byte(f, v >> 8);
|
828 | a672b469 | aliguori | qemu_put_byte(f, v); |
829 | a672b469 | aliguori | } |
830 | a672b469 | aliguori | |
831 | a672b469 | aliguori | void qemu_put_be32(QEMUFile *f, unsigned int v) |
832 | a672b469 | aliguori | { |
833 | a672b469 | aliguori | qemu_put_byte(f, v >> 24);
|
834 | a672b469 | aliguori | qemu_put_byte(f, v >> 16);
|
835 | a672b469 | aliguori | qemu_put_byte(f, v >> 8);
|
836 | a672b469 | aliguori | qemu_put_byte(f, v); |
837 | a672b469 | aliguori | } |
838 | a672b469 | aliguori | |
839 | a672b469 | aliguori | void qemu_put_be64(QEMUFile *f, uint64_t v)
|
840 | a672b469 | aliguori | { |
841 | a672b469 | aliguori | qemu_put_be32(f, v >> 32);
|
842 | a672b469 | aliguori | qemu_put_be32(f, v); |
843 | a672b469 | aliguori | } |
844 | a672b469 | aliguori | |
845 | a672b469 | aliguori | unsigned int qemu_get_be16(QEMUFile *f) |
846 | a672b469 | aliguori | { |
847 | a672b469 | aliguori | unsigned int v; |
848 | a672b469 | aliguori | v = qemu_get_byte(f) << 8;
|
849 | a672b469 | aliguori | v |= qemu_get_byte(f); |
850 | a672b469 | aliguori | return v;
|
851 | a672b469 | aliguori | } |
852 | a672b469 | aliguori | |
853 | a672b469 | aliguori | unsigned int qemu_get_be32(QEMUFile *f) |
854 | a672b469 | aliguori | { |
855 | a672b469 | aliguori | unsigned int v; |
856 | a672b469 | aliguori | v = qemu_get_byte(f) << 24;
|
857 | a672b469 | aliguori | v |= qemu_get_byte(f) << 16;
|
858 | a672b469 | aliguori | v |= qemu_get_byte(f) << 8;
|
859 | a672b469 | aliguori | v |= qemu_get_byte(f); |
860 | a672b469 | aliguori | return v;
|
861 | a672b469 | aliguori | } |
862 | a672b469 | aliguori | |
863 | a672b469 | aliguori | uint64_t qemu_get_be64(QEMUFile *f) |
864 | a672b469 | aliguori | { |
865 | a672b469 | aliguori | uint64_t v; |
866 | a672b469 | aliguori | v = (uint64_t)qemu_get_be32(f) << 32;
|
867 | a672b469 | aliguori | v |= qemu_get_be32(f); |
868 | a672b469 | aliguori | return v;
|
869 | a672b469 | aliguori | } |
870 | a672b469 | aliguori | |
871 | 2ff68d07 | Paolo Bonzini | |
872 | 2ff68d07 | Paolo Bonzini | /* timer */
|
873 | 2ff68d07 | Paolo Bonzini | |
874 | 2ff68d07 | Paolo Bonzini | void qemu_put_timer(QEMUFile *f, QEMUTimer *ts)
|
875 | 2ff68d07 | Paolo Bonzini | { |
876 | 2ff68d07 | Paolo Bonzini | uint64_t expire_time; |
877 | 2ff68d07 | Paolo Bonzini | |
878 | 2ff68d07 | Paolo Bonzini | expire_time = qemu_timer_expire_time_ns(ts); |
879 | 2ff68d07 | Paolo Bonzini | qemu_put_be64(f, expire_time); |
880 | 2ff68d07 | Paolo Bonzini | } |
881 | 2ff68d07 | Paolo Bonzini | |
882 | 2ff68d07 | Paolo Bonzini | void qemu_get_timer(QEMUFile *f, QEMUTimer *ts)
|
883 | 2ff68d07 | Paolo Bonzini | { |
884 | 2ff68d07 | Paolo Bonzini | uint64_t expire_time; |
885 | 2ff68d07 | Paolo Bonzini | |
886 | 2ff68d07 | Paolo Bonzini | expire_time = qemu_get_be64(f); |
887 | 2ff68d07 | Paolo Bonzini | if (expire_time != -1) { |
888 | 2ff68d07 | Paolo Bonzini | qemu_mod_timer_ns(ts, expire_time); |
889 | 2ff68d07 | Paolo Bonzini | } else {
|
890 | 2ff68d07 | Paolo Bonzini | qemu_del_timer(ts); |
891 | 2ff68d07 | Paolo Bonzini | } |
892 | 2ff68d07 | Paolo Bonzini | } |
893 | 2ff68d07 | Paolo Bonzini | |
894 | 2ff68d07 | Paolo Bonzini | |
895 | cdae5cfb | Gerd Hoffmann | /* bool */
|
896 | cdae5cfb | Gerd Hoffmann | |
897 | cdae5cfb | Gerd Hoffmann | static int get_bool(QEMUFile *f, void *pv, size_t size) |
898 | cdae5cfb | Gerd Hoffmann | { |
899 | cdae5cfb | Gerd Hoffmann | bool *v = pv;
|
900 | cdae5cfb | Gerd Hoffmann | *v = qemu_get_byte(f); |
901 | cdae5cfb | Gerd Hoffmann | return 0; |
902 | cdae5cfb | Gerd Hoffmann | } |
903 | cdae5cfb | Gerd Hoffmann | |
904 | cdae5cfb | Gerd Hoffmann | static void put_bool(QEMUFile *f, void *pv, size_t size) |
905 | cdae5cfb | Gerd Hoffmann | { |
906 | cdae5cfb | Gerd Hoffmann | bool *v = pv;
|
907 | cdae5cfb | Gerd Hoffmann | qemu_put_byte(f, *v); |
908 | cdae5cfb | Gerd Hoffmann | } |
909 | cdae5cfb | Gerd Hoffmann | |
910 | cdae5cfb | Gerd Hoffmann | const VMStateInfo vmstate_info_bool = {
|
911 | cdae5cfb | Gerd Hoffmann | .name = "bool",
|
912 | cdae5cfb | Gerd Hoffmann | .get = get_bool, |
913 | cdae5cfb | Gerd Hoffmann | .put = put_bool, |
914 | cdae5cfb | Gerd Hoffmann | }; |
915 | cdae5cfb | Gerd Hoffmann | |
916 | 9ed7d6ae | Juan Quintela | /* 8 bit int */
|
917 | 9ed7d6ae | Juan Quintela | |
918 | 9ed7d6ae | Juan Quintela | static int get_int8(QEMUFile *f, void *pv, size_t size) |
919 | 9ed7d6ae | Juan Quintela | { |
920 | 9ed7d6ae | Juan Quintela | int8_t *v = pv; |
921 | 9ed7d6ae | Juan Quintela | qemu_get_s8s(f, v); |
922 | 9ed7d6ae | Juan Quintela | return 0; |
923 | 9ed7d6ae | Juan Quintela | } |
924 | 9ed7d6ae | Juan Quintela | |
925 | 84e2e3eb | Juan Quintela | static void put_int8(QEMUFile *f, void *pv, size_t size) |
926 | 9ed7d6ae | Juan Quintela | { |
927 | 84e2e3eb | Juan Quintela | int8_t *v = pv; |
928 | 9ed7d6ae | Juan Quintela | qemu_put_s8s(f, v); |
929 | 9ed7d6ae | Juan Quintela | } |
930 | 9ed7d6ae | Juan Quintela | |
931 | 9ed7d6ae | Juan Quintela | const VMStateInfo vmstate_info_int8 = {
|
932 | 9ed7d6ae | Juan Quintela | .name = "int8",
|
933 | 9ed7d6ae | Juan Quintela | .get = get_int8, |
934 | 9ed7d6ae | Juan Quintela | .put = put_int8, |
935 | 9ed7d6ae | Juan Quintela | }; |
936 | 9ed7d6ae | Juan Quintela | |
937 | 9ed7d6ae | Juan Quintela | /* 16 bit int */
|
938 | 9ed7d6ae | Juan Quintela | |
939 | 9ed7d6ae | Juan Quintela | static int get_int16(QEMUFile *f, void *pv, size_t size) |
940 | 9ed7d6ae | Juan Quintela | { |
941 | 9ed7d6ae | Juan Quintela | int16_t *v = pv; |
942 | 9ed7d6ae | Juan Quintela | qemu_get_sbe16s(f, v); |
943 | 9ed7d6ae | Juan Quintela | return 0; |
944 | 9ed7d6ae | Juan Quintela | } |
945 | 9ed7d6ae | Juan Quintela | |
946 | 84e2e3eb | Juan Quintela | static void put_int16(QEMUFile *f, void *pv, size_t size) |
947 | 9ed7d6ae | Juan Quintela | { |
948 | 84e2e3eb | Juan Quintela | int16_t *v = pv; |
949 | 9ed7d6ae | Juan Quintela | qemu_put_sbe16s(f, v); |
950 | 9ed7d6ae | Juan Quintela | } |
951 | 9ed7d6ae | Juan Quintela | |
952 | 9ed7d6ae | Juan Quintela | const VMStateInfo vmstate_info_int16 = {
|
953 | 9ed7d6ae | Juan Quintela | .name = "int16",
|
954 | 9ed7d6ae | Juan Quintela | .get = get_int16, |
955 | 9ed7d6ae | Juan Quintela | .put = put_int16, |
956 | 9ed7d6ae | Juan Quintela | }; |
957 | 9ed7d6ae | Juan Quintela | |
958 | 9ed7d6ae | Juan Quintela | /* 32 bit int */
|
959 | 9ed7d6ae | Juan Quintela | |
960 | 9ed7d6ae | Juan Quintela | static int get_int32(QEMUFile *f, void *pv, size_t size) |
961 | 9ed7d6ae | Juan Quintela | { |
962 | 9ed7d6ae | Juan Quintela | int32_t *v = pv; |
963 | 9ed7d6ae | Juan Quintela | qemu_get_sbe32s(f, v); |
964 | 9ed7d6ae | Juan Quintela | return 0; |
965 | 9ed7d6ae | Juan Quintela | } |
966 | 9ed7d6ae | Juan Quintela | |
967 | 84e2e3eb | Juan Quintela | static void put_int32(QEMUFile *f, void *pv, size_t size) |
968 | 9ed7d6ae | Juan Quintela | { |
969 | 84e2e3eb | Juan Quintela | int32_t *v = pv; |
970 | 9ed7d6ae | Juan Quintela | qemu_put_sbe32s(f, v); |
971 | 9ed7d6ae | Juan Quintela | } |
972 | 9ed7d6ae | Juan Quintela | |
973 | 9ed7d6ae | Juan Quintela | const VMStateInfo vmstate_info_int32 = {
|
974 | 9ed7d6ae | Juan Quintela | .name = "int32",
|
975 | 9ed7d6ae | Juan Quintela | .get = get_int32, |
976 | 9ed7d6ae | Juan Quintela | .put = put_int32, |
977 | 9ed7d6ae | Juan Quintela | }; |
978 | 9ed7d6ae | Juan Quintela | |
979 | 82501660 | Juan Quintela | /* 32 bit int. See that the received value is the same than the one
|
980 | 82501660 | Juan Quintela | in the field */
|
981 | 82501660 | Juan Quintela | |
982 | 82501660 | Juan Quintela | static int get_int32_equal(QEMUFile *f, void *pv, size_t size) |
983 | 82501660 | Juan Quintela | { |
984 | 82501660 | Juan Quintela | int32_t *v = pv; |
985 | 82501660 | Juan Quintela | int32_t v2; |
986 | 82501660 | Juan Quintela | qemu_get_sbe32s(f, &v2); |
987 | 82501660 | Juan Quintela | |
988 | 82501660 | Juan Quintela | if (*v == v2)
|
989 | 82501660 | Juan Quintela | return 0; |
990 | 82501660 | Juan Quintela | return -EINVAL;
|
991 | 82501660 | Juan Quintela | } |
992 | 82501660 | Juan Quintela | |
993 | 82501660 | Juan Quintela | const VMStateInfo vmstate_info_int32_equal = {
|
994 | 82501660 | Juan Quintela | .name = "int32 equal",
|
995 | 82501660 | Juan Quintela | .get = get_int32_equal, |
996 | 82501660 | Juan Quintela | .put = put_int32, |
997 | 82501660 | Juan Quintela | }; |
998 | 82501660 | Juan Quintela | |
999 | 0a031e0a | Juan Quintela | /* 32 bit int. See that the received value is the less or the same
|
1000 | 0a031e0a | Juan Quintela | than the one in the field */
|
1001 | 0a031e0a | Juan Quintela | |
1002 | 0a031e0a | Juan Quintela | static int get_int32_le(QEMUFile *f, void *pv, size_t size) |
1003 | 0a031e0a | Juan Quintela | { |
1004 | 0a031e0a | Juan Quintela | int32_t *old = pv; |
1005 | 0a031e0a | Juan Quintela | int32_t new; |
1006 | 0a031e0a | Juan Quintela | qemu_get_sbe32s(f, &new); |
1007 | 0a031e0a | Juan Quintela | |
1008 | 0a031e0a | Juan Quintela | if (*old <= new)
|
1009 | 0a031e0a | Juan Quintela | return 0; |
1010 | 0a031e0a | Juan Quintela | return -EINVAL;
|
1011 | 0a031e0a | Juan Quintela | } |
1012 | 0a031e0a | Juan Quintela | |
1013 | 0a031e0a | Juan Quintela | const VMStateInfo vmstate_info_int32_le = {
|
1014 | 0a031e0a | Juan Quintela | .name = "int32 equal",
|
1015 | 0a031e0a | Juan Quintela | .get = get_int32_le, |
1016 | 0a031e0a | Juan Quintela | .put = put_int32, |
1017 | 0a031e0a | Juan Quintela | }; |
1018 | 0a031e0a | Juan Quintela | |
1019 | 9ed7d6ae | Juan Quintela | /* 64 bit int */
|
1020 | 9ed7d6ae | Juan Quintela | |
1021 | 9ed7d6ae | Juan Quintela | static int get_int64(QEMUFile *f, void *pv, size_t size) |
1022 | 9ed7d6ae | Juan Quintela | { |
1023 | 9ed7d6ae | Juan Quintela | int64_t *v = pv; |
1024 | 9ed7d6ae | Juan Quintela | qemu_get_sbe64s(f, v); |
1025 | 9ed7d6ae | Juan Quintela | return 0; |
1026 | 9ed7d6ae | Juan Quintela | } |
1027 | 9ed7d6ae | Juan Quintela | |
1028 | 84e2e3eb | Juan Quintela | static void put_int64(QEMUFile *f, void *pv, size_t size) |
1029 | 9ed7d6ae | Juan Quintela | { |
1030 | 84e2e3eb | Juan Quintela | int64_t *v = pv; |
1031 | 9ed7d6ae | Juan Quintela | qemu_put_sbe64s(f, v); |
1032 | 9ed7d6ae | Juan Quintela | } |
1033 | 9ed7d6ae | Juan Quintela | |
1034 | 9ed7d6ae | Juan Quintela | const VMStateInfo vmstate_info_int64 = {
|
1035 | 9ed7d6ae | Juan Quintela | .name = "int64",
|
1036 | 9ed7d6ae | Juan Quintela | .get = get_int64, |
1037 | 9ed7d6ae | Juan Quintela | .put = put_int64, |
1038 | 9ed7d6ae | Juan Quintela | }; |
1039 | 9ed7d6ae | Juan Quintela | |
1040 | 9ed7d6ae | Juan Quintela | /* 8 bit unsigned int */
|
1041 | 9ed7d6ae | Juan Quintela | |
1042 | 9ed7d6ae | Juan Quintela | static int get_uint8(QEMUFile *f, void *pv, size_t size) |
1043 | 9ed7d6ae | Juan Quintela | { |
1044 | 9ed7d6ae | Juan Quintela | uint8_t *v = pv; |
1045 | 9ed7d6ae | Juan Quintela | qemu_get_8s(f, v); |
1046 | 9ed7d6ae | Juan Quintela | return 0; |
1047 | 9ed7d6ae | Juan Quintela | } |
1048 | 9ed7d6ae | Juan Quintela | |
1049 | 84e2e3eb | Juan Quintela | static void put_uint8(QEMUFile *f, void *pv, size_t size) |
1050 | 9ed7d6ae | Juan Quintela | { |
1051 | 84e2e3eb | Juan Quintela | uint8_t *v = pv; |
1052 | 9ed7d6ae | Juan Quintela | qemu_put_8s(f, v); |
1053 | 9ed7d6ae | Juan Quintela | } |
1054 | 9ed7d6ae | Juan Quintela | |
1055 | 9ed7d6ae | Juan Quintela | const VMStateInfo vmstate_info_uint8 = {
|
1056 | 9ed7d6ae | Juan Quintela | .name = "uint8",
|
1057 | 9ed7d6ae | Juan Quintela | .get = get_uint8, |
1058 | 9ed7d6ae | Juan Quintela | .put = put_uint8, |
1059 | 9ed7d6ae | Juan Quintela | }; |
1060 | 9ed7d6ae | Juan Quintela | |
1061 | 9ed7d6ae | Juan Quintela | /* 16 bit unsigned int */
|
1062 | 9ed7d6ae | Juan Quintela | |
1063 | 9ed7d6ae | Juan Quintela | static int get_uint16(QEMUFile *f, void *pv, size_t size) |
1064 | 9ed7d6ae | Juan Quintela | { |
1065 | 9ed7d6ae | Juan Quintela | uint16_t *v = pv; |
1066 | 9ed7d6ae | Juan Quintela | qemu_get_be16s(f, v); |
1067 | 9ed7d6ae | Juan Quintela | return 0; |
1068 | 9ed7d6ae | Juan Quintela | } |
1069 | 9ed7d6ae | Juan Quintela | |
1070 | 84e2e3eb | Juan Quintela | static void put_uint16(QEMUFile *f, void *pv, size_t size) |
1071 | 9ed7d6ae | Juan Quintela | { |
1072 | 84e2e3eb | Juan Quintela | uint16_t *v = pv; |
1073 | 9ed7d6ae | Juan Quintela | qemu_put_be16s(f, v); |
1074 | 9ed7d6ae | Juan Quintela | } |
1075 | 9ed7d6ae | Juan Quintela | |
1076 | 9ed7d6ae | Juan Quintela | const VMStateInfo vmstate_info_uint16 = {
|
1077 | 9ed7d6ae | Juan Quintela | .name = "uint16",
|
1078 | 9ed7d6ae | Juan Quintela | .get = get_uint16, |
1079 | 9ed7d6ae | Juan Quintela | .put = put_uint16, |
1080 | 9ed7d6ae | Juan Quintela | }; |
1081 | 9ed7d6ae | Juan Quintela | |
1082 | 9ed7d6ae | Juan Quintela | /* 32 bit unsigned int */
|
1083 | 9ed7d6ae | Juan Quintela | |
1084 | 9ed7d6ae | Juan Quintela | static int get_uint32(QEMUFile *f, void *pv, size_t size) |
1085 | 9ed7d6ae | Juan Quintela | { |
1086 | 9ed7d6ae | Juan Quintela | uint32_t *v = pv; |
1087 | 9ed7d6ae | Juan Quintela | qemu_get_be32s(f, v); |
1088 | 9ed7d6ae | Juan Quintela | return 0; |
1089 | 9ed7d6ae | Juan Quintela | } |
1090 | 9ed7d6ae | Juan Quintela | |
1091 | 84e2e3eb | Juan Quintela | static void put_uint32(QEMUFile *f, void *pv, size_t size) |
1092 | 9ed7d6ae | Juan Quintela | { |
1093 | 84e2e3eb | Juan Quintela | uint32_t *v = pv; |
1094 | 9ed7d6ae | Juan Quintela | qemu_put_be32s(f, v); |
1095 | 9ed7d6ae | Juan Quintela | } |
1096 | 9ed7d6ae | Juan Quintela | |
1097 | 9ed7d6ae | Juan Quintela | const VMStateInfo vmstate_info_uint32 = {
|
1098 | 9ed7d6ae | Juan Quintela | .name = "uint32",
|
1099 | 9ed7d6ae | Juan Quintela | .get = get_uint32, |
1100 | 9ed7d6ae | Juan Quintela | .put = put_uint32, |
1101 | 9ed7d6ae | Juan Quintela | }; |
1102 | 9ed7d6ae | Juan Quintela | |
1103 | 9122a8fe | Juan Quintela | /* 32 bit uint. See that the received value is the same than the one
|
1104 | 9122a8fe | Juan Quintela | in the field */
|
1105 | 9122a8fe | Juan Quintela | |
1106 | 9122a8fe | Juan Quintela | static int get_uint32_equal(QEMUFile *f, void *pv, size_t size) |
1107 | 9122a8fe | Juan Quintela | { |
1108 | 9122a8fe | Juan Quintela | uint32_t *v = pv; |
1109 | 9122a8fe | Juan Quintela | uint32_t v2; |
1110 | 9122a8fe | Juan Quintela | qemu_get_be32s(f, &v2); |
1111 | 9122a8fe | Juan Quintela | |
1112 | 9122a8fe | Juan Quintela | if (*v == v2) {
|
1113 | 9122a8fe | Juan Quintela | return 0; |
1114 | 9122a8fe | Juan Quintela | } |
1115 | 9122a8fe | Juan Quintela | return -EINVAL;
|
1116 | 9122a8fe | Juan Quintela | } |
1117 | 9122a8fe | Juan Quintela | |
1118 | 9122a8fe | Juan Quintela | const VMStateInfo vmstate_info_uint32_equal = {
|
1119 | 9122a8fe | Juan Quintela | .name = "uint32 equal",
|
1120 | 9122a8fe | Juan Quintela | .get = get_uint32_equal, |
1121 | 9122a8fe | Juan Quintela | .put = put_uint32, |
1122 | 9122a8fe | Juan Quintela | }; |
1123 | 9122a8fe | Juan Quintela | |
1124 | 9ed7d6ae | Juan Quintela | /* 64 bit unsigned int */
|
1125 | 9ed7d6ae | Juan Quintela | |
1126 | 9ed7d6ae | Juan Quintela | static int get_uint64(QEMUFile *f, void *pv, size_t size) |
1127 | 9ed7d6ae | Juan Quintela | { |
1128 | 9ed7d6ae | Juan Quintela | uint64_t *v = pv; |
1129 | 9ed7d6ae | Juan Quintela | qemu_get_be64s(f, v); |
1130 | 9ed7d6ae | Juan Quintela | return 0; |
1131 | 9ed7d6ae | Juan Quintela | } |
1132 | 9ed7d6ae | Juan Quintela | |
1133 | 84e2e3eb | Juan Quintela | static void put_uint64(QEMUFile *f, void *pv, size_t size) |
1134 | 9ed7d6ae | Juan Quintela | { |
1135 | 84e2e3eb | Juan Quintela | uint64_t *v = pv; |
1136 | 9ed7d6ae | Juan Quintela | qemu_put_be64s(f, v); |
1137 | 9ed7d6ae | Juan Quintela | } |
1138 | 9ed7d6ae | Juan Quintela | |
1139 | 9ed7d6ae | Juan Quintela | const VMStateInfo vmstate_info_uint64 = {
|
1140 | 9ed7d6ae | Juan Quintela | .name = "uint64",
|
1141 | 9ed7d6ae | Juan Quintela | .get = get_uint64, |
1142 | 9ed7d6ae | Juan Quintela | .put = put_uint64, |
1143 | 9ed7d6ae | Juan Quintela | }; |
1144 | 9ed7d6ae | Juan Quintela | |
1145 | e344b8a1 | David Gibson | /* 64 bit unsigned int. See that the received value is the same than the one
|
1146 | e344b8a1 | David Gibson | in the field */
|
1147 | e344b8a1 | David Gibson | |
1148 | e344b8a1 | David Gibson | static int get_uint64_equal(QEMUFile *f, void *pv, size_t size) |
1149 | e344b8a1 | David Gibson | { |
1150 | e344b8a1 | David Gibson | uint64_t *v = pv; |
1151 | e344b8a1 | David Gibson | uint64_t v2; |
1152 | e344b8a1 | David Gibson | qemu_get_be64s(f, &v2); |
1153 | e344b8a1 | David Gibson | |
1154 | e344b8a1 | David Gibson | if (*v == v2) {
|
1155 | e344b8a1 | David Gibson | return 0; |
1156 | e344b8a1 | David Gibson | } |
1157 | e344b8a1 | David Gibson | return -EINVAL;
|
1158 | e344b8a1 | David Gibson | } |
1159 | e344b8a1 | David Gibson | |
1160 | e344b8a1 | David Gibson | const VMStateInfo vmstate_info_uint64_equal = {
|
1161 | e344b8a1 | David Gibson | .name = "int64 equal",
|
1162 | e344b8a1 | David Gibson | .get = get_uint64_equal, |
1163 | e344b8a1 | David Gibson | .put = put_uint64, |
1164 | e344b8a1 | David Gibson | }; |
1165 | e344b8a1 | David Gibson | |
1166 | 80cd83e7 | Juan Quintela | /* 8 bit int. See that the received value is the same than the one
|
1167 | 80cd83e7 | Juan Quintela | in the field */
|
1168 | 80cd83e7 | Juan Quintela | |
1169 | 80cd83e7 | Juan Quintela | static int get_uint8_equal(QEMUFile *f, void *pv, size_t size) |
1170 | 80cd83e7 | Juan Quintela | { |
1171 | 80cd83e7 | Juan Quintela | uint8_t *v = pv; |
1172 | 80cd83e7 | Juan Quintela | uint8_t v2; |
1173 | 80cd83e7 | Juan Quintela | qemu_get_8s(f, &v2); |
1174 | 80cd83e7 | Juan Quintela | |
1175 | 80cd83e7 | Juan Quintela | if (*v == v2)
|
1176 | 80cd83e7 | Juan Quintela | return 0; |
1177 | 80cd83e7 | Juan Quintela | return -EINVAL;
|
1178 | 80cd83e7 | Juan Quintela | } |
1179 | 80cd83e7 | Juan Quintela | |
1180 | 80cd83e7 | Juan Quintela | const VMStateInfo vmstate_info_uint8_equal = {
|
1181 | aa1cce69 | Juan Quintela | .name = "uint8 equal",
|
1182 | 80cd83e7 | Juan Quintela | .get = get_uint8_equal, |
1183 | 80cd83e7 | Juan Quintela | .put = put_uint8, |
1184 | 80cd83e7 | Juan Quintela | }; |
1185 | 80cd83e7 | Juan Quintela | |
1186 | dc3b83a0 | Juan Quintela | /* 16 bit unsigned int int. See that the received value is the same than the one
|
1187 | dc3b83a0 | Juan Quintela | in the field */
|
1188 | dc3b83a0 | Juan Quintela | |
1189 | dc3b83a0 | Juan Quintela | static int get_uint16_equal(QEMUFile *f, void *pv, size_t size) |
1190 | dc3b83a0 | Juan Quintela | { |
1191 | dc3b83a0 | Juan Quintela | uint16_t *v = pv; |
1192 | dc3b83a0 | Juan Quintela | uint16_t v2; |
1193 | dc3b83a0 | Juan Quintela | qemu_get_be16s(f, &v2); |
1194 | dc3b83a0 | Juan Quintela | |
1195 | dc3b83a0 | Juan Quintela | if (*v == v2)
|
1196 | dc3b83a0 | Juan Quintela | return 0; |
1197 | dc3b83a0 | Juan Quintela | return -EINVAL;
|
1198 | dc3b83a0 | Juan Quintela | } |
1199 | dc3b83a0 | Juan Quintela | |
1200 | dc3b83a0 | Juan Quintela | const VMStateInfo vmstate_info_uint16_equal = {
|
1201 | dc3b83a0 | Juan Quintela | .name = "uint16 equal",
|
1202 | dc3b83a0 | Juan Quintela | .get = get_uint16_equal, |
1203 | dc3b83a0 | Juan Quintela | .put = put_uint16, |
1204 | dc3b83a0 | Juan Quintela | }; |
1205 | dc3b83a0 | Juan Quintela | |
1206 | 213945e4 | David Gibson | /* floating point */
|
1207 | 213945e4 | David Gibson | |
1208 | 213945e4 | David Gibson | static int get_float64(QEMUFile *f, void *pv, size_t size) |
1209 | 213945e4 | David Gibson | { |
1210 | 213945e4 | David Gibson | float64 *v = pv; |
1211 | 213945e4 | David Gibson | |
1212 | 213945e4 | David Gibson | *v = make_float64(qemu_get_be64(f)); |
1213 | 213945e4 | David Gibson | return 0; |
1214 | 213945e4 | David Gibson | } |
1215 | 213945e4 | David Gibson | |
1216 | 213945e4 | David Gibson | static void put_float64(QEMUFile *f, void *pv, size_t size) |
1217 | 213945e4 | David Gibson | { |
1218 | 213945e4 | David Gibson | uint64_t *v = pv; |
1219 | 213945e4 | David Gibson | |
1220 | 213945e4 | David Gibson | qemu_put_be64(f, float64_val(*v)); |
1221 | 213945e4 | David Gibson | } |
1222 | 213945e4 | David Gibson | |
1223 | 213945e4 | David Gibson | const VMStateInfo vmstate_info_float64 = {
|
1224 | 213945e4 | David Gibson | .name = "float64",
|
1225 | 213945e4 | David Gibson | .get = get_float64, |
1226 | 213945e4 | David Gibson | .put = put_float64, |
1227 | 213945e4 | David Gibson | }; |
1228 | 213945e4 | David Gibson | |
1229 | dde0463b | Juan Quintela | /* timers */
|
1230 | dde0463b | Juan Quintela | |
1231 | dde0463b | Juan Quintela | static int get_timer(QEMUFile *f, void *pv, size_t size) |
1232 | dde0463b | Juan Quintela | { |
1233 | dde0463b | Juan Quintela | QEMUTimer *v = pv; |
1234 | dde0463b | Juan Quintela | qemu_get_timer(f, v); |
1235 | dde0463b | Juan Quintela | return 0; |
1236 | dde0463b | Juan Quintela | } |
1237 | dde0463b | Juan Quintela | |
1238 | 84e2e3eb | Juan Quintela | static void put_timer(QEMUFile *f, void *pv, size_t size) |
1239 | dde0463b | Juan Quintela | { |
1240 | 84e2e3eb | Juan Quintela | QEMUTimer *v = pv; |
1241 | dde0463b | Juan Quintela | qemu_put_timer(f, v); |
1242 | dde0463b | Juan Quintela | } |
1243 | dde0463b | Juan Quintela | |
1244 | dde0463b | Juan Quintela | const VMStateInfo vmstate_info_timer = {
|
1245 | dde0463b | Juan Quintela | .name = "timer",
|
1246 | dde0463b | Juan Quintela | .get = get_timer, |
1247 | dde0463b | Juan Quintela | .put = put_timer, |
1248 | dde0463b | Juan Quintela | }; |
1249 | dde0463b | Juan Quintela | |
1250 | 6f67c50f | Juan Quintela | /* uint8_t buffers */
|
1251 | 6f67c50f | Juan Quintela | |
1252 | 6f67c50f | Juan Quintela | static int get_buffer(QEMUFile *f, void *pv, size_t size) |
1253 | 6f67c50f | Juan Quintela | { |
1254 | 6f67c50f | Juan Quintela | uint8_t *v = pv; |
1255 | 6f67c50f | Juan Quintela | qemu_get_buffer(f, v, size); |
1256 | 6f67c50f | Juan Quintela | return 0; |
1257 | 6f67c50f | Juan Quintela | } |
1258 | 6f67c50f | Juan Quintela | |
1259 | 84e2e3eb | Juan Quintela | static void put_buffer(QEMUFile *f, void *pv, size_t size) |
1260 | 6f67c50f | Juan Quintela | { |
1261 | 84e2e3eb | Juan Quintela | uint8_t *v = pv; |
1262 | 6f67c50f | Juan Quintela | qemu_put_buffer(f, v, size); |
1263 | 6f67c50f | Juan Quintela | } |
1264 | 6f67c50f | Juan Quintela | |
1265 | 6f67c50f | Juan Quintela | const VMStateInfo vmstate_info_buffer = {
|
1266 | 6f67c50f | Juan Quintela | .name = "buffer",
|
1267 | 6f67c50f | Juan Quintela | .get = get_buffer, |
1268 | 6f67c50f | Juan Quintela | .put = put_buffer, |
1269 | 6f67c50f | Juan Quintela | }; |
1270 | 6f67c50f | Juan Quintela | |
1271 | 76507c75 | Juan Quintela | /* unused buffers: space that was used for some fields that are
|
1272 | 61cc8701 | Stefan Weil | not useful anymore */
|
1273 | 76507c75 | Juan Quintela | |
1274 | 76507c75 | Juan Quintela | static int get_unused_buffer(QEMUFile *f, void *pv, size_t size) |
1275 | 76507c75 | Juan Quintela | { |
1276 | 21174c34 | Jan Kiszka | uint8_t buf[1024];
|
1277 | 21174c34 | Jan Kiszka | int block_len;
|
1278 | 21174c34 | Jan Kiszka | |
1279 | 21174c34 | Jan Kiszka | while (size > 0) { |
1280 | 21174c34 | Jan Kiszka | block_len = MIN(sizeof(buf), size);
|
1281 | 21174c34 | Jan Kiszka | size -= block_len; |
1282 | 21174c34 | Jan Kiszka | qemu_get_buffer(f, buf, block_len); |
1283 | 21174c34 | Jan Kiszka | } |
1284 | 21174c34 | Jan Kiszka | return 0; |
1285 | 76507c75 | Juan Quintela | } |
1286 | 76507c75 | Juan Quintela | |
1287 | 76507c75 | Juan Quintela | static void put_unused_buffer(QEMUFile *f, void *pv, size_t size) |
1288 | 76507c75 | Juan Quintela | { |
1289 | 21174c34 | Jan Kiszka | static const uint8_t buf[1024]; |
1290 | 21174c34 | Jan Kiszka | int block_len;
|
1291 | 21174c34 | Jan Kiszka | |
1292 | 21174c34 | Jan Kiszka | while (size > 0) { |
1293 | 21174c34 | Jan Kiszka | block_len = MIN(sizeof(buf), size);
|
1294 | 21174c34 | Jan Kiszka | size -= block_len; |
1295 | 21174c34 | Jan Kiszka | qemu_put_buffer(f, buf, block_len); |
1296 | 21174c34 | Jan Kiszka | } |
1297 | 76507c75 | Juan Quintela | } |
1298 | 76507c75 | Juan Quintela | |
1299 | 76507c75 | Juan Quintela | const VMStateInfo vmstate_info_unused_buffer = {
|
1300 | 76507c75 | Juan Quintela | .name = "unused_buffer",
|
1301 | 76507c75 | Juan Quintela | .get = get_unused_buffer, |
1302 | 76507c75 | Juan Quintela | .put = put_unused_buffer, |
1303 | 76507c75 | Juan Quintela | }; |
1304 | 76507c75 | Juan Quintela | |
1305 | 08e99e29 | Peter Maydell | /* bitmaps (as defined by bitmap.h). Note that size here is the size
|
1306 | 08e99e29 | Peter Maydell | * of the bitmap in bits. The on-the-wire format of a bitmap is 64
|
1307 | 08e99e29 | Peter Maydell | * bit words with the bits in big endian order. The in-memory format
|
1308 | 08e99e29 | Peter Maydell | * is an array of 'unsigned long', which may be either 32 or 64 bits.
|
1309 | 08e99e29 | Peter Maydell | */
|
1310 | 08e99e29 | Peter Maydell | /* This is the number of 64 bit words sent over the wire */
|
1311 | 08e99e29 | Peter Maydell | #define BITS_TO_U64S(nr) DIV_ROUND_UP(nr, 64) |
1312 | 08e99e29 | Peter Maydell | static int get_bitmap(QEMUFile *f, void *pv, size_t size) |
1313 | 08e99e29 | Peter Maydell | { |
1314 | 08e99e29 | Peter Maydell | unsigned long *bmp = pv; |
1315 | 08e99e29 | Peter Maydell | int i, idx = 0; |
1316 | 08e99e29 | Peter Maydell | for (i = 0; i < BITS_TO_U64S(size); i++) { |
1317 | 08e99e29 | Peter Maydell | uint64_t w = qemu_get_be64(f); |
1318 | 08e99e29 | Peter Maydell | bmp[idx++] = w; |
1319 | 08e99e29 | Peter Maydell | if (sizeof(unsigned long) == 4 && idx < BITS_TO_LONGS(size)) { |
1320 | 08e99e29 | Peter Maydell | bmp[idx++] = w >> 32;
|
1321 | 08e99e29 | Peter Maydell | } |
1322 | 08e99e29 | Peter Maydell | } |
1323 | 08e99e29 | Peter Maydell | return 0; |
1324 | 08e99e29 | Peter Maydell | } |
1325 | 08e99e29 | Peter Maydell | |
1326 | 08e99e29 | Peter Maydell | static void put_bitmap(QEMUFile *f, void *pv, size_t size) |
1327 | 08e99e29 | Peter Maydell | { |
1328 | 08e99e29 | Peter Maydell | unsigned long *bmp = pv; |
1329 | 08e99e29 | Peter Maydell | int i, idx = 0; |
1330 | 08e99e29 | Peter Maydell | for (i = 0; i < BITS_TO_U64S(size); i++) { |
1331 | 08e99e29 | Peter Maydell | uint64_t w = bmp[idx++]; |
1332 | 08e99e29 | Peter Maydell | if (sizeof(unsigned long) == 4 && idx < BITS_TO_LONGS(size)) { |
1333 | 08e99e29 | Peter Maydell | w |= ((uint64_t)bmp[idx++]) << 32;
|
1334 | 08e99e29 | Peter Maydell | } |
1335 | 08e99e29 | Peter Maydell | qemu_put_be64(f, w); |
1336 | 08e99e29 | Peter Maydell | } |
1337 | 08e99e29 | Peter Maydell | } |
1338 | 08e99e29 | Peter Maydell | |
1339 | 08e99e29 | Peter Maydell | const VMStateInfo vmstate_info_bitmap = {
|
1340 | 08e99e29 | Peter Maydell | .name = "bitmap",
|
1341 | 08e99e29 | Peter Maydell | .get = get_bitmap, |
1342 | 08e99e29 | Peter Maydell | .put = put_bitmap, |
1343 | 08e99e29 | Peter Maydell | }; |
1344 | 08e99e29 | Peter Maydell | |
1345 | 7685ee6a | Alex Williamson | typedef struct CompatEntry { |
1346 | 7685ee6a | Alex Williamson | char idstr[256]; |
1347 | 7685ee6a | Alex Williamson | int instance_id;
|
1348 | 7685ee6a | Alex Williamson | } CompatEntry; |
1349 | 7685ee6a | Alex Williamson | |
1350 | a672b469 | aliguori | typedef struct SaveStateEntry { |
1351 | 72cf2d4f | Blue Swirl | QTAILQ_ENTRY(SaveStateEntry) entry; |
1352 | a672b469 | aliguori | char idstr[256]; |
1353 | a672b469 | aliguori | int instance_id;
|
1354 | 4d2ffa08 | Jan Kiszka | int alias_id;
|
1355 | a672b469 | aliguori | int version_id;
|
1356 | a672b469 | aliguori | int section_id;
|
1357 | 22ea40f4 | Juan Quintela | SaveVMHandlers *ops; |
1358 | 9ed7d6ae | Juan Quintela | const VMStateDescription *vmsd;
|
1359 | a672b469 | aliguori | void *opaque;
|
1360 | 7685ee6a | Alex Williamson | CompatEntry *compat; |
1361 | 24312968 | Cam Macdonell | int no_migrate;
|
1362 | a7ae8355 | Stefano Stabellini | int is_ram;
|
1363 | a672b469 | aliguori | } SaveStateEntry; |
1364 | a672b469 | aliguori | |
1365 | c163b5ca | lirans@il.ibm.com | |
1366 | 72cf2d4f | Blue Swirl | static QTAILQ_HEAD(savevm_handlers, SaveStateEntry) savevm_handlers =
|
1367 | 72cf2d4f | Blue Swirl | QTAILQ_HEAD_INITIALIZER(savevm_handlers); |
1368 | 9ed7d6ae | Juan Quintela | static int global_section_id; |
1369 | a672b469 | aliguori | |
1370 | 8718e999 | Juan Quintela | static int calculate_new_instance_id(const char *idstr) |
1371 | 8718e999 | Juan Quintela | { |
1372 | 8718e999 | Juan Quintela | SaveStateEntry *se; |
1373 | 8718e999 | Juan Quintela | int instance_id = 0; |
1374 | 8718e999 | Juan Quintela | |
1375 | 72cf2d4f | Blue Swirl | QTAILQ_FOREACH(se, &savevm_handlers, entry) { |
1376 | 8718e999 | Juan Quintela | if (strcmp(idstr, se->idstr) == 0 |
1377 | 8718e999 | Juan Quintela | && instance_id <= se->instance_id) { |
1378 | 8718e999 | Juan Quintela | instance_id = se->instance_id + 1;
|
1379 | 8718e999 | Juan Quintela | } |
1380 | 8718e999 | Juan Quintela | } |
1381 | 8718e999 | Juan Quintela | return instance_id;
|
1382 | 8718e999 | Juan Quintela | } |
1383 | 8718e999 | Juan Quintela | |
1384 | 7685ee6a | Alex Williamson | static int calculate_compat_instance_id(const char *idstr) |
1385 | 7685ee6a | Alex Williamson | { |
1386 | 7685ee6a | Alex Williamson | SaveStateEntry *se; |
1387 | 7685ee6a | Alex Williamson | int instance_id = 0; |
1388 | 7685ee6a | Alex Williamson | |
1389 | 7685ee6a | Alex Williamson | QTAILQ_FOREACH(se, &savevm_handlers, entry) { |
1390 | 7685ee6a | Alex Williamson | if (!se->compat)
|
1391 | 7685ee6a | Alex Williamson | continue;
|
1392 | 7685ee6a | Alex Williamson | |
1393 | 7685ee6a | Alex Williamson | if (strcmp(idstr, se->compat->idstr) == 0 |
1394 | 7685ee6a | Alex Williamson | && instance_id <= se->compat->instance_id) { |
1395 | 7685ee6a | Alex Williamson | instance_id = se->compat->instance_id + 1;
|
1396 | 7685ee6a | Alex Williamson | } |
1397 | 7685ee6a | Alex Williamson | } |
1398 | 7685ee6a | Alex Williamson | return instance_id;
|
1399 | 7685ee6a | Alex Williamson | } |
1400 | 7685ee6a | Alex Williamson | |
1401 | a672b469 | aliguori | /* TODO: Individual devices generally have very little idea about the rest
|
1402 | a672b469 | aliguori | of the system, so instance_id should be removed/replaced.
|
1403 | a672b469 | aliguori | Meanwhile pass -1 as instance_id if you do not already have a clearly
|
1404 | a672b469 | aliguori | distinguishing id for all instances of your device class. */
|
1405 | 0be71e32 | Alex Williamson | int register_savevm_live(DeviceState *dev,
|
1406 | 0be71e32 | Alex Williamson | const char *idstr, |
1407 | a672b469 | aliguori | int instance_id,
|
1408 | a672b469 | aliguori | int version_id,
|
1409 | 7908c78d | Juan Quintela | SaveVMHandlers *ops, |
1410 | a672b469 | aliguori | void *opaque)
|
1411 | a672b469 | aliguori | { |
1412 | 8718e999 | Juan Quintela | SaveStateEntry *se; |
1413 | a672b469 | aliguori | |
1414 | 7267c094 | Anthony Liguori | se = g_malloc0(sizeof(SaveStateEntry));
|
1415 | a672b469 | aliguori | se->version_id = version_id; |
1416 | a672b469 | aliguori | se->section_id = global_section_id++; |
1417 | 7908c78d | Juan Quintela | se->ops = ops; |
1418 | a672b469 | aliguori | se->opaque = opaque; |
1419 | 9ed7d6ae | Juan Quintela | se->vmsd = NULL;
|
1420 | 24312968 | Cam Macdonell | se->no_migrate = 0;
|
1421 | a7ae8355 | Stefano Stabellini | /* if this is a live_savem then set is_ram */
|
1422 | 16310a3c | Juan Quintela | if (ops->save_live_setup != NULL) { |
1423 | a7ae8355 | Stefano Stabellini | se->is_ram = 1;
|
1424 | a7ae8355 | Stefano Stabellini | } |
1425 | a672b469 | aliguori | |
1426 | 09e5ab63 | Anthony Liguori | if (dev) {
|
1427 | 09e5ab63 | Anthony Liguori | char *id = qdev_get_dev_path(dev);
|
1428 | 7685ee6a | Alex Williamson | if (id) {
|
1429 | 7685ee6a | Alex Williamson | pstrcpy(se->idstr, sizeof(se->idstr), id);
|
1430 | 7685ee6a | Alex Williamson | pstrcat(se->idstr, sizeof(se->idstr), "/"); |
1431 | 7267c094 | Anthony Liguori | g_free(id); |
1432 | 7685ee6a | Alex Williamson | |
1433 | 7267c094 | Anthony Liguori | se->compat = g_malloc0(sizeof(CompatEntry));
|
1434 | 7685ee6a | Alex Williamson | pstrcpy(se->compat->idstr, sizeof(se->compat->idstr), idstr);
|
1435 | 7685ee6a | Alex Williamson | se->compat->instance_id = instance_id == -1 ?
|
1436 | 7685ee6a | Alex Williamson | calculate_compat_instance_id(idstr) : instance_id; |
1437 | 7685ee6a | Alex Williamson | instance_id = -1;
|
1438 | 7685ee6a | Alex Williamson | } |
1439 | 7685ee6a | Alex Williamson | } |
1440 | 7685ee6a | Alex Williamson | pstrcat(se->idstr, sizeof(se->idstr), idstr);
|
1441 | 7685ee6a | Alex Williamson | |
1442 | 8718e999 | Juan Quintela | if (instance_id == -1) { |
1443 | 7685ee6a | Alex Williamson | se->instance_id = calculate_new_instance_id(se->idstr); |
1444 | 8718e999 | Juan Quintela | } else {
|
1445 | 8718e999 | Juan Quintela | se->instance_id = instance_id; |
1446 | a672b469 | aliguori | } |
1447 | 7685ee6a | Alex Williamson | assert(!se->compat || se->instance_id == 0);
|
1448 | 8718e999 | Juan Quintela | /* add at the end of list */
|
1449 | 72cf2d4f | Blue Swirl | QTAILQ_INSERT_TAIL(&savevm_handlers, se, entry); |
1450 | a672b469 | aliguori | return 0; |
1451 | a672b469 | aliguori | } |
1452 | a672b469 | aliguori | |
1453 | 0be71e32 | Alex Williamson | int register_savevm(DeviceState *dev,
|
1454 | 0be71e32 | Alex Williamson | const char *idstr, |
1455 | a672b469 | aliguori | int instance_id,
|
1456 | a672b469 | aliguori | int version_id,
|
1457 | a672b469 | aliguori | SaveStateHandler *save_state, |
1458 | a672b469 | aliguori | LoadStateHandler *load_state, |
1459 | a672b469 | aliguori | void *opaque)
|
1460 | a672b469 | aliguori | { |
1461 | 7908c78d | Juan Quintela | SaveVMHandlers *ops = g_malloc0(sizeof(SaveVMHandlers));
|
1462 | 7908c78d | Juan Quintela | ops->save_state = save_state; |
1463 | 7908c78d | Juan Quintela | ops->load_state = load_state; |
1464 | 0be71e32 | Alex Williamson | return register_savevm_live(dev, idstr, instance_id, version_id,
|
1465 | 7908c78d | Juan Quintela | ops, opaque); |
1466 | a672b469 | aliguori | } |
1467 | a672b469 | aliguori | |
1468 | 0be71e32 | Alex Williamson | void unregister_savevm(DeviceState *dev, const char *idstr, void *opaque) |
1469 | 41bd13af | aliguori | { |
1470 | 8718e999 | Juan Quintela | SaveStateEntry *se, *new_se; |
1471 | 7685ee6a | Alex Williamson | char id[256] = ""; |
1472 | 7685ee6a | Alex Williamson | |
1473 | 09e5ab63 | Anthony Liguori | if (dev) {
|
1474 | 09e5ab63 | Anthony Liguori | char *path = qdev_get_dev_path(dev);
|
1475 | 7685ee6a | Alex Williamson | if (path) {
|
1476 | 7685ee6a | Alex Williamson | pstrcpy(id, sizeof(id), path);
|
1477 | 7685ee6a | Alex Williamson | pstrcat(id, sizeof(id), "/"); |
1478 | 7267c094 | Anthony Liguori | g_free(path); |
1479 | 7685ee6a | Alex Williamson | } |
1480 | 7685ee6a | Alex Williamson | } |
1481 | 7685ee6a | Alex Williamson | pstrcat(id, sizeof(id), idstr);
|
1482 | 41bd13af | aliguori | |
1483 | 72cf2d4f | Blue Swirl | QTAILQ_FOREACH_SAFE(se, &savevm_handlers, entry, new_se) { |
1484 | 7685ee6a | Alex Williamson | if (strcmp(se->idstr, id) == 0 && se->opaque == opaque) { |
1485 | 72cf2d4f | Blue Swirl | QTAILQ_REMOVE(&savevm_handlers, se, entry); |
1486 | 69e58af9 | Alex Williamson | if (se->compat) {
|
1487 | 7267c094 | Anthony Liguori | g_free(se->compat); |
1488 | 69e58af9 | Alex Williamson | } |
1489 | 22ea40f4 | Juan Quintela | g_free(se->ops); |
1490 | 7267c094 | Anthony Liguori | g_free(se); |
1491 | 41bd13af | aliguori | } |
1492 | 41bd13af | aliguori | } |
1493 | 41bd13af | aliguori | } |
1494 | 41bd13af | aliguori | |
1495 | 0be71e32 | Alex Williamson | int vmstate_register_with_alias_id(DeviceState *dev, int instance_id, |
1496 | 4d2ffa08 | Jan Kiszka | const VMStateDescription *vmsd,
|
1497 | 4d2ffa08 | Jan Kiszka | void *opaque, int alias_id, |
1498 | 4d2ffa08 | Jan Kiszka | int required_for_version)
|
1499 | 9ed7d6ae | Juan Quintela | { |
1500 | 8718e999 | Juan Quintela | SaveStateEntry *se; |
1501 | 9ed7d6ae | Juan Quintela | |
1502 | 4d2ffa08 | Jan Kiszka | /* If this triggers, alias support can be dropped for the vmsd. */
|
1503 | 4d2ffa08 | Jan Kiszka | assert(alias_id == -1 || required_for_version >= vmsd->minimum_version_id);
|
1504 | 4d2ffa08 | Jan Kiszka | |
1505 | 7267c094 | Anthony Liguori | se = g_malloc0(sizeof(SaveStateEntry));
|
1506 | 9ed7d6ae | Juan Quintela | se->version_id = vmsd->version_id; |
1507 | 9ed7d6ae | Juan Quintela | se->section_id = global_section_id++; |
1508 | 9ed7d6ae | Juan Quintela | se->opaque = opaque; |
1509 | 9ed7d6ae | Juan Quintela | se->vmsd = vmsd; |
1510 | 4d2ffa08 | Jan Kiszka | se->alias_id = alias_id; |
1511 | 2837c8ea | Gerd Hoffmann | se->no_migrate = vmsd->unmigratable; |
1512 | 9ed7d6ae | Juan Quintela | |
1513 | 09e5ab63 | Anthony Liguori | if (dev) {
|
1514 | 09e5ab63 | Anthony Liguori | char *id = qdev_get_dev_path(dev);
|
1515 | 7685ee6a | Alex Williamson | if (id) {
|
1516 | 7685ee6a | Alex Williamson | pstrcpy(se->idstr, sizeof(se->idstr), id);
|
1517 | 7685ee6a | Alex Williamson | pstrcat(se->idstr, sizeof(se->idstr), "/"); |
1518 | 7267c094 | Anthony Liguori | g_free(id); |
1519 | 7685ee6a | Alex Williamson | |
1520 | 7267c094 | Anthony Liguori | se->compat = g_malloc0(sizeof(CompatEntry));
|
1521 | 7685ee6a | Alex Williamson | pstrcpy(se->compat->idstr, sizeof(se->compat->idstr), vmsd->name);
|
1522 | 7685ee6a | Alex Williamson | se->compat->instance_id = instance_id == -1 ?
|
1523 | 7685ee6a | Alex Williamson | calculate_compat_instance_id(vmsd->name) : instance_id; |
1524 | 7685ee6a | Alex Williamson | instance_id = -1;
|
1525 | 7685ee6a | Alex Williamson | } |
1526 | 7685ee6a | Alex Williamson | } |
1527 | 7685ee6a | Alex Williamson | pstrcat(se->idstr, sizeof(se->idstr), vmsd->name);
|
1528 | 7685ee6a | Alex Williamson | |
1529 | 8718e999 | Juan Quintela | if (instance_id == -1) { |
1530 | 7685ee6a | Alex Williamson | se->instance_id = calculate_new_instance_id(se->idstr); |
1531 | 8718e999 | Juan Quintela | } else {
|
1532 | 8718e999 | Juan Quintela | se->instance_id = instance_id; |
1533 | 9ed7d6ae | Juan Quintela | } |
1534 | 7685ee6a | Alex Williamson | assert(!se->compat || se->instance_id == 0);
|
1535 | 8718e999 | Juan Quintela | /* add at the end of list */
|
1536 | 72cf2d4f | Blue Swirl | QTAILQ_INSERT_TAIL(&savevm_handlers, se, entry); |
1537 | 9ed7d6ae | Juan Quintela | return 0; |
1538 | 9ed7d6ae | Juan Quintela | } |
1539 | 9ed7d6ae | Juan Quintela | |
1540 | 0be71e32 | Alex Williamson | void vmstate_unregister(DeviceState *dev, const VMStateDescription *vmsd, |
1541 | 0be71e32 | Alex Williamson | void *opaque)
|
1542 | 9ed7d6ae | Juan Quintela | { |
1543 | 1eb7538b | Juan Quintela | SaveStateEntry *se, *new_se; |
1544 | 1eb7538b | Juan Quintela | |
1545 | 72cf2d4f | Blue Swirl | QTAILQ_FOREACH_SAFE(se, &savevm_handlers, entry, new_se) { |
1546 | 1eb7538b | Juan Quintela | if (se->vmsd == vmsd && se->opaque == opaque) {
|
1547 | 72cf2d4f | Blue Swirl | QTAILQ_REMOVE(&savevm_handlers, se, entry); |
1548 | 69e58af9 | Alex Williamson | if (se->compat) {
|
1549 | 7267c094 | Anthony Liguori | g_free(se->compat); |
1550 | 69e58af9 | Alex Williamson | } |
1551 | 7267c094 | Anthony Liguori | g_free(se); |
1552 | 1eb7538b | Juan Quintela | } |
1553 | 1eb7538b | Juan Quintela | } |
1554 | 9ed7d6ae | Juan Quintela | } |
1555 | 9ed7d6ae | Juan Quintela | |
1556 | 811814bd | Juan Quintela | static void vmstate_subsection_save(QEMUFile *f, const VMStateDescription *vmsd, |
1557 | 811814bd | Juan Quintela | void *opaque);
|
1558 | 811814bd | Juan Quintela | static int vmstate_subsection_load(QEMUFile *f, const VMStateDescription *vmsd, |
1559 | 811814bd | Juan Quintela | void *opaque);
|
1560 | 811814bd | Juan Quintela | |
1561 | 9ed7d6ae | Juan Quintela | int vmstate_load_state(QEMUFile *f, const VMStateDescription *vmsd, |
1562 | 9ed7d6ae | Juan Quintela | void *opaque, int version_id) |
1563 | 9ed7d6ae | Juan Quintela | { |
1564 | 9ed7d6ae | Juan Quintela | VMStateField *field = vmsd->fields; |
1565 | 811814bd | Juan Quintela | int ret;
|
1566 | 9ed7d6ae | Juan Quintela | |
1567 | 9ed7d6ae | Juan Quintela | if (version_id > vmsd->version_id) {
|
1568 | 9ed7d6ae | Juan Quintela | return -EINVAL;
|
1569 | 9ed7d6ae | Juan Quintela | } |
1570 | 9ed7d6ae | Juan Quintela | if (version_id < vmsd->minimum_version_id_old) {
|
1571 | 9ed7d6ae | Juan Quintela | return -EINVAL;
|
1572 | 9ed7d6ae | Juan Quintela | } |
1573 | 9ed7d6ae | Juan Quintela | if (version_id < vmsd->minimum_version_id) {
|
1574 | 9ed7d6ae | Juan Quintela | return vmsd->load_state_old(f, opaque, version_id);
|
1575 | 9ed7d6ae | Juan Quintela | } |
1576 | fd4d52de | Juan Quintela | if (vmsd->pre_load) {
|
1577 | fd4d52de | Juan Quintela | int ret = vmsd->pre_load(opaque);
|
1578 | fd4d52de | Juan Quintela | if (ret)
|
1579 | fd4d52de | Juan Quintela | return ret;
|
1580 | fd4d52de | Juan Quintela | } |
1581 | 9ed7d6ae | Juan Quintela | while(field->name) {
|
1582 | f11f6a5f | Juan Quintela | if ((field->field_exists &&
|
1583 | f11f6a5f | Juan Quintela | field->field_exists(opaque, version_id)) || |
1584 | f11f6a5f | Juan Quintela | (!field->field_exists && |
1585 | f11f6a5f | Juan Quintela | field->version_id <= version_id)) { |
1586 | f752a6aa | Juan Quintela | void *base_addr = opaque + field->offset;
|
1587 | 811814bd | Juan Quintela | int i, n_elems = 1; |
1588 | e61a1e0a | Juan Quintela | int size = field->size;
|
1589 | 9ed7d6ae | Juan Quintela | |
1590 | e61a1e0a | Juan Quintela | if (field->flags & VMS_VBUFFER) {
|
1591 | e61a1e0a | Juan Quintela | size = *(int32_t *)(opaque+field->size_offset); |
1592 | 33599e2a | Juan Quintela | if (field->flags & VMS_MULTIPLY) {
|
1593 | 33599e2a | Juan Quintela | size *= field->size; |
1594 | 33599e2a | Juan Quintela | } |
1595 | e61a1e0a | Juan Quintela | } |
1596 | f752a6aa | Juan Quintela | if (field->flags & VMS_ARRAY) {
|
1597 | f752a6aa | Juan Quintela | n_elems = field->num; |
1598 | d6698281 | Juan Quintela | } else if (field->flags & VMS_VARRAY_INT32) { |
1599 | d6698281 | Juan Quintela | n_elems = *(int32_t *)(opaque+field->num_offset); |
1600 | a624b086 | Juan Quintela | } else if (field->flags & VMS_VARRAY_UINT32) { |
1601 | a624b086 | Juan Quintela | n_elems = *(uint32_t *)(opaque+field->num_offset); |
1602 | bdb4941d | Juan Quintela | } else if (field->flags & VMS_VARRAY_UINT16) { |
1603 | bdb4941d | Juan Quintela | n_elems = *(uint16_t *)(opaque+field->num_offset); |
1604 | 82fa39b7 | Juan Quintela | } else if (field->flags & VMS_VARRAY_UINT8) { |
1605 | 82fa39b7 | Juan Quintela | n_elems = *(uint8_t *)(opaque+field->num_offset); |
1606 | f752a6aa | Juan Quintela | } |
1607 | dde0463b | Juan Quintela | if (field->flags & VMS_POINTER) {
|
1608 | e61a1e0a | Juan Quintela | base_addr = *(void **)base_addr + field->start;
|
1609 | dde0463b | Juan Quintela | } |
1610 | f752a6aa | Juan Quintela | for (i = 0; i < n_elems; i++) { |
1611 | e61a1e0a | Juan Quintela | void *addr = base_addr + size * i;
|
1612 | ec245e21 | Juan Quintela | |
1613 | 19df438b | Juan Quintela | if (field->flags & VMS_ARRAY_OF_POINTER) {
|
1614 | 19df438b | Juan Quintela | addr = *(void **)addr;
|
1615 | 19df438b | Juan Quintela | } |
1616 | ec245e21 | Juan Quintela | if (field->flags & VMS_STRUCT) {
|
1617 | fa3aad24 | Juan Quintela | ret = vmstate_load_state(f, field->vmsd, addr, field->vmsd->version_id); |
1618 | ec245e21 | Juan Quintela | } else {
|
1619 | e61a1e0a | Juan Quintela | ret = field->info->get(f, addr, size); |
1620 | ec245e21 | Juan Quintela | |
1621 | ec245e21 | Juan Quintela | } |
1622 | f752a6aa | Juan Quintela | if (ret < 0) { |
1623 | f752a6aa | Juan Quintela | return ret;
|
1624 | f752a6aa | Juan Quintela | } |
1625 | 9ed7d6ae | Juan Quintela | } |
1626 | 9ed7d6ae | Juan Quintela | } |
1627 | 9ed7d6ae | Juan Quintela | field++; |
1628 | 9ed7d6ae | Juan Quintela | } |
1629 | 811814bd | Juan Quintela | ret = vmstate_subsection_load(f, vmsd, opaque); |
1630 | 811814bd | Juan Quintela | if (ret != 0) { |
1631 | 811814bd | Juan Quintela | return ret;
|
1632 | 811814bd | Juan Quintela | } |
1633 | 752ff2fa | Juan Quintela | if (vmsd->post_load) {
|
1634 | e59fb374 | Juan Quintela | return vmsd->post_load(opaque, version_id);
|
1635 | 752ff2fa | Juan Quintela | } |
1636 | 9ed7d6ae | Juan Quintela | return 0; |
1637 | 9ed7d6ae | Juan Quintela | } |
1638 | 9ed7d6ae | Juan Quintela | |
1639 | 9ed7d6ae | Juan Quintela | void vmstate_save_state(QEMUFile *f, const VMStateDescription *vmsd, |
1640 | 84e2e3eb | Juan Quintela | void *opaque)
|
1641 | 9ed7d6ae | Juan Quintela | { |
1642 | 9ed7d6ae | Juan Quintela | VMStateField *field = vmsd->fields; |
1643 | 9ed7d6ae | Juan Quintela | |
1644 | 8fb0791d | Juan Quintela | if (vmsd->pre_save) {
|
1645 | 8fb0791d | Juan Quintela | vmsd->pre_save(opaque); |
1646 | 8fb0791d | Juan Quintela | } |
1647 | 9ed7d6ae | Juan Quintela | while(field->name) {
|
1648 | f11f6a5f | Juan Quintela | if (!field->field_exists ||
|
1649 | f11f6a5f | Juan Quintela | field->field_exists(opaque, vmsd->version_id)) { |
1650 | f11f6a5f | Juan Quintela | void *base_addr = opaque + field->offset;
|
1651 | f11f6a5f | Juan Quintela | int i, n_elems = 1; |
1652 | e61a1e0a | Juan Quintela | int size = field->size;
|
1653 | dde0463b | Juan Quintela | |
1654 | e61a1e0a | Juan Quintela | if (field->flags & VMS_VBUFFER) {
|
1655 | e61a1e0a | Juan Quintela | size = *(int32_t *)(opaque+field->size_offset); |
1656 | 33599e2a | Juan Quintela | if (field->flags & VMS_MULTIPLY) {
|
1657 | 33599e2a | Juan Quintela | size *= field->size; |
1658 | 33599e2a | Juan Quintela | } |
1659 | e61a1e0a | Juan Quintela | } |
1660 | f11f6a5f | Juan Quintela | if (field->flags & VMS_ARRAY) {
|
1661 | f11f6a5f | Juan Quintela | n_elems = field->num; |
1662 | d6698281 | Juan Quintela | } else if (field->flags & VMS_VARRAY_INT32) { |
1663 | d6698281 | Juan Quintela | n_elems = *(int32_t *)(opaque+field->num_offset); |
1664 | 1329d189 | Amos Kong | } else if (field->flags & VMS_VARRAY_UINT32) { |
1665 | 1329d189 | Amos Kong | n_elems = *(uint32_t *)(opaque+field->num_offset); |
1666 | bdb4941d | Juan Quintela | } else if (field->flags & VMS_VARRAY_UINT16) { |
1667 | bdb4941d | Juan Quintela | n_elems = *(uint16_t *)(opaque+field->num_offset); |
1668 | b784421c | Juan Quintela | } else if (field->flags & VMS_VARRAY_UINT8) { |
1669 | b784421c | Juan Quintela | n_elems = *(uint8_t *)(opaque+field->num_offset); |
1670 | f11f6a5f | Juan Quintela | } |
1671 | f11f6a5f | Juan Quintela | if (field->flags & VMS_POINTER) {
|
1672 | e61a1e0a | Juan Quintela | base_addr = *(void **)base_addr + field->start;
|
1673 | f11f6a5f | Juan Quintela | } |
1674 | f11f6a5f | Juan Quintela | for (i = 0; i < n_elems; i++) { |
1675 | e61a1e0a | Juan Quintela | void *addr = base_addr + size * i;
|
1676 | ec245e21 | Juan Quintela | |
1677 | 8595387e | Juan Quintela | if (field->flags & VMS_ARRAY_OF_POINTER) {
|
1678 | 8595387e | Juan Quintela | addr = *(void **)addr;
|
1679 | 8595387e | Juan Quintela | } |
1680 | f11f6a5f | Juan Quintela | if (field->flags & VMS_STRUCT) {
|
1681 | f11f6a5f | Juan Quintela | vmstate_save_state(f, field->vmsd, addr); |
1682 | f11f6a5f | Juan Quintela | } else {
|
1683 | e61a1e0a | Juan Quintela | field->info->put(f, addr, size); |
1684 | f11f6a5f | Juan Quintela | } |
1685 | ec245e21 | Juan Quintela | } |
1686 | dde0463b | Juan Quintela | } |
1687 | 9ed7d6ae | Juan Quintela | field++; |
1688 | 9ed7d6ae | Juan Quintela | } |
1689 | 811814bd | Juan Quintela | vmstate_subsection_save(f, vmsd, opaque); |
1690 | 9ed7d6ae | Juan Quintela | } |
1691 | 9ed7d6ae | Juan Quintela | |
1692 | 4082be4d | Juan Quintela | static int vmstate_load(QEMUFile *f, SaveStateEntry *se, int version_id) |
1693 | 4082be4d | Juan Quintela | { |
1694 | 9ed7d6ae | Juan Quintela | if (!se->vmsd) { /* Old style */ |
1695 | 22ea40f4 | Juan Quintela | return se->ops->load_state(f, se->opaque, version_id);
|
1696 | 9ed7d6ae | Juan Quintela | } |
1697 | 9ed7d6ae | Juan Quintela | return vmstate_load_state(f, se->vmsd, se->opaque, version_id);
|
1698 | 4082be4d | Juan Quintela | } |
1699 | 4082be4d | Juan Quintela | |
1700 | dc912121 | Alex Williamson | static void vmstate_save(QEMUFile *f, SaveStateEntry *se) |
1701 | 4082be4d | Juan Quintela | { |
1702 | 9ed7d6ae | Juan Quintela | if (!se->vmsd) { /* Old style */ |
1703 | 22ea40f4 | Juan Quintela | se->ops->save_state(f, se->opaque); |
1704 | dc912121 | Alex Williamson | return;
|
1705 | 9ed7d6ae | Juan Quintela | } |
1706 | 9ed7d6ae | Juan Quintela | vmstate_save_state(f,se->vmsd, se->opaque); |
1707 | 4082be4d | Juan Quintela | } |
1708 | 4082be4d | Juan Quintela | |
1709 | a672b469 | aliguori | #define QEMU_VM_FILE_MAGIC 0x5145564d |
1710 | a672b469 | aliguori | #define QEMU_VM_FILE_VERSION_COMPAT 0x00000002 |
1711 | a672b469 | aliguori | #define QEMU_VM_FILE_VERSION 0x00000003 |
1712 | a672b469 | aliguori | |
1713 | a672b469 | aliguori | #define QEMU_VM_EOF 0x00 |
1714 | a672b469 | aliguori | #define QEMU_VM_SECTION_START 0x01 |
1715 | a672b469 | aliguori | #define QEMU_VM_SECTION_PART 0x02 |
1716 | a672b469 | aliguori | #define QEMU_VM_SECTION_END 0x03 |
1717 | a672b469 | aliguori | #define QEMU_VM_SECTION_FULL 0x04 |
1718 | 811814bd | Juan Quintela | #define QEMU_VM_SUBSECTION 0x05 |
1719 | a672b469 | aliguori | |
1720 | e1c37d0e | Luiz Capitulino | bool qemu_savevm_state_blocked(Error **errp)
|
1721 | dc912121 | Alex Williamson | { |
1722 | dc912121 | Alex Williamson | SaveStateEntry *se; |
1723 | dc912121 | Alex Williamson | |
1724 | dc912121 | Alex Williamson | QTAILQ_FOREACH(se, &savevm_handlers, entry) { |
1725 | dc912121 | Alex Williamson | if (se->no_migrate) {
|
1726 | e1c37d0e | Luiz Capitulino | error_set(errp, QERR_MIGRATION_NOT_SUPPORTED, se->idstr); |
1727 | dc912121 | Alex Williamson | return true; |
1728 | dc912121 | Alex Williamson | } |
1729 | dc912121 | Alex Williamson | } |
1730 | dc912121 | Alex Williamson | return false; |
1731 | dc912121 | Alex Williamson | } |
1732 | dc912121 | Alex Williamson | |
1733 | 47c8c17a | Paolo Bonzini | void qemu_savevm_state_begin(QEMUFile *f,
|
1734 | 47c8c17a | Paolo Bonzini | const MigrationParams *params)
|
1735 | a672b469 | aliguori | { |
1736 | a672b469 | aliguori | SaveStateEntry *se; |
1737 | 39346385 | Juan Quintela | int ret;
|
1738 | a672b469 | aliguori | |
1739 | c163b5ca | lirans@il.ibm.com | QTAILQ_FOREACH(se, &savevm_handlers, entry) { |
1740 | 22ea40f4 | Juan Quintela | if (!se->ops || !se->ops->set_params) {
|
1741 | c163b5ca | lirans@il.ibm.com | continue;
|
1742 | 6607ae23 | Isaku Yamahata | } |
1743 | 22ea40f4 | Juan Quintela | se->ops->set_params(params, se->opaque); |
1744 | c163b5ca | lirans@il.ibm.com | } |
1745 | c163b5ca | lirans@il.ibm.com | |
1746 | a672b469 | aliguori | qemu_put_be32(f, QEMU_VM_FILE_MAGIC); |
1747 | a672b469 | aliguori | qemu_put_be32(f, QEMU_VM_FILE_VERSION); |
1748 | a672b469 | aliguori | |
1749 | 72cf2d4f | Blue Swirl | QTAILQ_FOREACH(se, &savevm_handlers, entry) { |
1750 | a672b469 | aliguori | int len;
|
1751 | a672b469 | aliguori | |
1752 | d1315aac | Juan Quintela | if (!se->ops || !se->ops->save_live_setup) {
|
1753 | a672b469 | aliguori | continue;
|
1754 | 22ea40f4 | Juan Quintela | } |
1755 | 6bd68781 | Juan Quintela | if (se->ops && se->ops->is_active) {
|
1756 | 6bd68781 | Juan Quintela | if (!se->ops->is_active(se->opaque)) {
|
1757 | 6bd68781 | Juan Quintela | continue;
|
1758 | 6bd68781 | Juan Quintela | } |
1759 | 6bd68781 | Juan Quintela | } |
1760 | a672b469 | aliguori | /* Section type */
|
1761 | a672b469 | aliguori | qemu_put_byte(f, QEMU_VM_SECTION_START); |
1762 | a672b469 | aliguori | qemu_put_be32(f, se->section_id); |
1763 | a672b469 | aliguori | |
1764 | a672b469 | aliguori | /* ID string */
|
1765 | a672b469 | aliguori | len = strlen(se->idstr); |
1766 | a672b469 | aliguori | qemu_put_byte(f, len); |
1767 | a672b469 | aliguori | qemu_put_buffer(f, (uint8_t *)se->idstr, len); |
1768 | a672b469 | aliguori | |
1769 | a672b469 | aliguori | qemu_put_be32(f, se->instance_id); |
1770 | a672b469 | aliguori | qemu_put_be32(f, se->version_id); |
1771 | a672b469 | aliguori | |
1772 | d1315aac | Juan Quintela | ret = se->ops->save_live_setup(f, se->opaque); |
1773 | 2975725f | Juan Quintela | if (ret < 0) { |
1774 | 47c8c17a | Paolo Bonzini | qemu_file_set_error(f, ret); |
1775 | 47c8c17a | Paolo Bonzini | break;
|
1776 | 2975725f | Juan Quintela | } |
1777 | a672b469 | aliguori | } |
1778 | a672b469 | aliguori | } |
1779 | a672b469 | aliguori | |
1780 | 39346385 | Juan Quintela | /*
|
1781 | 07f35073 | Dong Xu Wang | * this function has three return values:
|
1782 | 39346385 | Juan Quintela | * negative: there was one error, and we have -errno.
|
1783 | 39346385 | Juan Quintela | * 0 : We haven't finished, caller have to go again
|
1784 | 39346385 | Juan Quintela | * 1 : We have finished, we can go to complete phase
|
1785 | 39346385 | Juan Quintela | */
|
1786 | 539de124 | Luiz Capitulino | int qemu_savevm_state_iterate(QEMUFile *f)
|
1787 | a672b469 | aliguori | { |
1788 | a672b469 | aliguori | SaveStateEntry *se; |
1789 | a672b469 | aliguori | int ret = 1; |
1790 | a672b469 | aliguori | |
1791 | 72cf2d4f | Blue Swirl | QTAILQ_FOREACH(se, &savevm_handlers, entry) { |
1792 | 16310a3c | Juan Quintela | if (!se->ops || !se->ops->save_live_iterate) {
|
1793 | a672b469 | aliguori | continue;
|
1794 | 22ea40f4 | Juan Quintela | } |
1795 | 6bd68781 | Juan Quintela | if (se->ops && se->ops->is_active) {
|
1796 | 6bd68781 | Juan Quintela | if (!se->ops->is_active(se->opaque)) {
|
1797 | 6bd68781 | Juan Quintela | continue;
|
1798 | 6bd68781 | Juan Quintela | } |
1799 | 6bd68781 | Juan Quintela | } |
1800 | aac844ed | Juan Quintela | if (qemu_file_rate_limit(f)) {
|
1801 | aac844ed | Juan Quintela | return 0; |
1802 | aac844ed | Juan Quintela | } |
1803 | 517a13c9 | Juan Quintela | trace_savevm_section_start(); |
1804 | a672b469 | aliguori | /* Section type */
|
1805 | a672b469 | aliguori | qemu_put_byte(f, QEMU_VM_SECTION_PART); |
1806 | a672b469 | aliguori | qemu_put_be32(f, se->section_id); |
1807 | a672b469 | aliguori | |
1808 | 16310a3c | Juan Quintela | ret = se->ops->save_live_iterate(f, se->opaque); |
1809 | 517a13c9 | Juan Quintela | trace_savevm_section_end(se->section_id); |
1810 | 517a13c9 | Juan Quintela | |
1811 | 47c8c17a | Paolo Bonzini | if (ret < 0) { |
1812 | 47c8c17a | Paolo Bonzini | qemu_file_set_error(f, ret); |
1813 | 47c8c17a | Paolo Bonzini | } |
1814 | 2975725f | Juan Quintela | if (ret <= 0) { |
1815 | 90697be8 | Jan Kiszka | /* Do not proceed to the next vmstate before this one reported
|
1816 | 90697be8 | Jan Kiszka | completion of the current stage. This serializes the migration
|
1817 | 90697be8 | Jan Kiszka | and reduces the probability that a faster changing state is
|
1818 | 90697be8 | Jan Kiszka | synchronized over and over again. */
|
1819 | 90697be8 | Jan Kiszka | break;
|
1820 | 90697be8 | Jan Kiszka | } |
1821 | a672b469 | aliguori | } |
1822 | 39346385 | Juan Quintela | return ret;
|
1823 | a672b469 | aliguori | } |
1824 | a672b469 | aliguori | |
1825 | 47c8c17a | Paolo Bonzini | void qemu_savevm_state_complete(QEMUFile *f)
|
1826 | a672b469 | aliguori | { |
1827 | a672b469 | aliguori | SaveStateEntry *se; |
1828 | 2975725f | Juan Quintela | int ret;
|
1829 | a672b469 | aliguori | |
1830 | ea375f9a | Jan Kiszka | cpu_synchronize_all_states(); |
1831 | ea375f9a | Jan Kiszka | |
1832 | 72cf2d4f | Blue Swirl | QTAILQ_FOREACH(se, &savevm_handlers, entry) { |
1833 | 16310a3c | Juan Quintela | if (!se->ops || !se->ops->save_live_complete) {
|
1834 | a672b469 | aliguori | continue;
|
1835 | 22ea40f4 | Juan Quintela | } |
1836 | 6bd68781 | Juan Quintela | if (se->ops && se->ops->is_active) {
|
1837 | 6bd68781 | Juan Quintela | if (!se->ops->is_active(se->opaque)) {
|
1838 | 6bd68781 | Juan Quintela | continue;
|
1839 | 6bd68781 | Juan Quintela | } |
1840 | 6bd68781 | Juan Quintela | } |
1841 | 517a13c9 | Juan Quintela | trace_savevm_section_start(); |
1842 | a672b469 | aliguori | /* Section type */
|
1843 | a672b469 | aliguori | qemu_put_byte(f, QEMU_VM_SECTION_END); |
1844 | a672b469 | aliguori | qemu_put_be32(f, se->section_id); |
1845 | a672b469 | aliguori | |
1846 | 16310a3c | Juan Quintela | ret = se->ops->save_live_complete(f, se->opaque); |
1847 | 517a13c9 | Juan Quintela | trace_savevm_section_end(se->section_id); |
1848 | 2975725f | Juan Quintela | if (ret < 0) { |
1849 | 47c8c17a | Paolo Bonzini | qemu_file_set_error(f, ret); |
1850 | 47c8c17a | Paolo Bonzini | return;
|
1851 | 2975725f | Juan Quintela | } |
1852 | a672b469 | aliguori | } |
1853 | a672b469 | aliguori | |
1854 | 72cf2d4f | Blue Swirl | QTAILQ_FOREACH(se, &savevm_handlers, entry) { |
1855 | a672b469 | aliguori | int len;
|
1856 | a672b469 | aliguori | |
1857 | 22ea40f4 | Juan Quintela | if ((!se->ops || !se->ops->save_state) && !se->vmsd) {
|
1858 | a672b469 | aliguori | continue;
|
1859 | 22ea40f4 | Juan Quintela | } |
1860 | 517a13c9 | Juan Quintela | trace_savevm_section_start(); |
1861 | a672b469 | aliguori | /* Section type */
|
1862 | a672b469 | aliguori | qemu_put_byte(f, QEMU_VM_SECTION_FULL); |
1863 | a672b469 | aliguori | qemu_put_be32(f, se->section_id); |
1864 | a672b469 | aliguori | |
1865 | a672b469 | aliguori | /* ID string */
|
1866 | a672b469 | aliguori | len = strlen(se->idstr); |
1867 | a672b469 | aliguori | qemu_put_byte(f, len); |
1868 | a672b469 | aliguori | qemu_put_buffer(f, (uint8_t *)se->idstr, len); |
1869 | a672b469 | aliguori | |
1870 | a672b469 | aliguori | qemu_put_be32(f, se->instance_id); |
1871 | a672b469 | aliguori | qemu_put_be32(f, se->version_id); |
1872 | a672b469 | aliguori | |
1873 | dc912121 | Alex Williamson | vmstate_save(f, se); |
1874 | 517a13c9 | Juan Quintela | trace_savevm_section_end(se->section_id); |
1875 | a672b469 | aliguori | } |
1876 | a672b469 | aliguori | |
1877 | a672b469 | aliguori | qemu_put_byte(f, QEMU_VM_EOF); |
1878 | edaae611 | Paolo Bonzini | qemu_fflush(f); |
1879 | a672b469 | aliguori | } |
1880 | a672b469 | aliguori | |
1881 | e4ed1541 | Juan Quintela | uint64_t qemu_savevm_state_pending(QEMUFile *f, uint64_t max_size) |
1882 | e4ed1541 | Juan Quintela | { |
1883 | e4ed1541 | Juan Quintela | SaveStateEntry *se; |
1884 | e4ed1541 | Juan Quintela | uint64_t ret = 0;
|
1885 | e4ed1541 | Juan Quintela | |
1886 | e4ed1541 | Juan Quintela | QTAILQ_FOREACH(se, &savevm_handlers, entry) { |
1887 | e4ed1541 | Juan Quintela | if (!se->ops || !se->ops->save_live_pending) {
|
1888 | e4ed1541 | Juan Quintela | continue;
|
1889 | e4ed1541 | Juan Quintela | } |
1890 | e4ed1541 | Juan Quintela | if (se->ops && se->ops->is_active) {
|
1891 | e4ed1541 | Juan Quintela | if (!se->ops->is_active(se->opaque)) {
|
1892 | e4ed1541 | Juan Quintela | continue;
|
1893 | e4ed1541 | Juan Quintela | } |
1894 | e4ed1541 | Juan Quintela | } |
1895 | e4ed1541 | Juan Quintela | ret += se->ops->save_live_pending(f, se->opaque, max_size); |
1896 | e4ed1541 | Juan Quintela | } |
1897 | e4ed1541 | Juan Quintela | return ret;
|
1898 | e4ed1541 | Juan Quintela | } |
1899 | e4ed1541 | Juan Quintela | |
1900 | 6522773f | Juan Quintela | void qemu_savevm_state_cancel(void) |
1901 | 4ec7fcc7 | Jan Kiszka | { |
1902 | 4ec7fcc7 | Jan Kiszka | SaveStateEntry *se; |
1903 | 4ec7fcc7 | Jan Kiszka | |
1904 | 4ec7fcc7 | Jan Kiszka | QTAILQ_FOREACH(se, &savevm_handlers, entry) { |
1905 | 9b5bfab0 | Juan Quintela | if (se->ops && se->ops->cancel) {
|
1906 | 9b5bfab0 | Juan Quintela | se->ops->cancel(se->opaque); |
1907 | 4ec7fcc7 | Jan Kiszka | } |
1908 | 4ec7fcc7 | Jan Kiszka | } |
1909 | 4ec7fcc7 | Jan Kiszka | } |
1910 | 4ec7fcc7 | Jan Kiszka | |
1911 | e1c37d0e | Luiz Capitulino | static int qemu_savevm_state(QEMUFile *f) |
1912 | a672b469 | aliguori | { |
1913 | a672b469 | aliguori | int ret;
|
1914 | 6607ae23 | Isaku Yamahata | MigrationParams params = { |
1915 | 6607ae23 | Isaku Yamahata | .blk = 0,
|
1916 | 6607ae23 | Isaku Yamahata | .shared = 0
|
1917 | 6607ae23 | Isaku Yamahata | }; |
1918 | a672b469 | aliguori | |
1919 | e1c37d0e | Luiz Capitulino | if (qemu_savevm_state_blocked(NULL)) { |
1920 | 04943eba | Paolo Bonzini | return -EINVAL;
|
1921 | dc912121 | Alex Williamson | } |
1922 | dc912121 | Alex Williamson | |
1923 | 9b095037 | Paolo Bonzini | qemu_mutex_unlock_iothread(); |
1924 | 47c8c17a | Paolo Bonzini | qemu_savevm_state_begin(f, ¶ms); |
1925 | 9b095037 | Paolo Bonzini | qemu_mutex_lock_iothread(); |
1926 | 9b095037 | Paolo Bonzini | |
1927 | 47c8c17a | Paolo Bonzini | while (qemu_file_get_error(f) == 0) { |
1928 | 47c8c17a | Paolo Bonzini | if (qemu_savevm_state_iterate(f) > 0) { |
1929 | 47c8c17a | Paolo Bonzini | break;
|
1930 | 47c8c17a | Paolo Bonzini | } |
1931 | 47c8c17a | Paolo Bonzini | } |
1932 | a672b469 | aliguori | |
1933 | 47c8c17a | Paolo Bonzini | ret = qemu_file_get_error(f); |
1934 | 39346385 | Juan Quintela | if (ret == 0) { |
1935 | 47c8c17a | Paolo Bonzini | qemu_savevm_state_complete(f); |
1936 | 624b9cc2 | Juan Quintela | ret = qemu_file_get_error(f); |
1937 | 39346385 | Juan Quintela | } |
1938 | 04943eba | Paolo Bonzini | if (ret != 0) { |
1939 | 04943eba | Paolo Bonzini | qemu_savevm_state_cancel(); |
1940 | 04943eba | Paolo Bonzini | } |
1941 | a672b469 | aliguori | return ret;
|
1942 | a672b469 | aliguori | } |
1943 | a672b469 | aliguori | |
1944 | a7ae8355 | Stefano Stabellini | static int qemu_save_device_state(QEMUFile *f) |
1945 | a7ae8355 | Stefano Stabellini | { |
1946 | a7ae8355 | Stefano Stabellini | SaveStateEntry *se; |
1947 | a7ae8355 | Stefano Stabellini | |
1948 | a7ae8355 | Stefano Stabellini | qemu_put_be32(f, QEMU_VM_FILE_MAGIC); |
1949 | a7ae8355 | Stefano Stabellini | qemu_put_be32(f, QEMU_VM_FILE_VERSION); |
1950 | a7ae8355 | Stefano Stabellini | |
1951 | a7ae8355 | Stefano Stabellini | cpu_synchronize_all_states(); |
1952 | a7ae8355 | Stefano Stabellini | |
1953 | a7ae8355 | Stefano Stabellini | QTAILQ_FOREACH(se, &savevm_handlers, entry) { |
1954 | a7ae8355 | Stefano Stabellini | int len;
|
1955 | a7ae8355 | Stefano Stabellini | |
1956 | a7ae8355 | Stefano Stabellini | if (se->is_ram) {
|
1957 | a7ae8355 | Stefano Stabellini | continue;
|
1958 | a7ae8355 | Stefano Stabellini | } |
1959 | 22ea40f4 | Juan Quintela | if ((!se->ops || !se->ops->save_state) && !se->vmsd) {
|
1960 | a7ae8355 | Stefano Stabellini | continue;
|
1961 | a7ae8355 | Stefano Stabellini | } |
1962 | a7ae8355 | Stefano Stabellini | |
1963 | a7ae8355 | Stefano Stabellini | /* Section type */
|
1964 | a7ae8355 | Stefano Stabellini | qemu_put_byte(f, QEMU_VM_SECTION_FULL); |
1965 | a7ae8355 | Stefano Stabellini | qemu_put_be32(f, se->section_id); |
1966 | a7ae8355 | Stefano Stabellini | |
1967 | a7ae8355 | Stefano Stabellini | /* ID string */
|
1968 | a7ae8355 | Stefano Stabellini | len = strlen(se->idstr); |
1969 | a7ae8355 | Stefano Stabellini | qemu_put_byte(f, len); |
1970 | a7ae8355 | Stefano Stabellini | qemu_put_buffer(f, (uint8_t *)se->idstr, len); |
1971 | a7ae8355 | Stefano Stabellini | |
1972 | a7ae8355 | Stefano Stabellini | qemu_put_be32(f, se->instance_id); |
1973 | a7ae8355 | Stefano Stabellini | qemu_put_be32(f, se->version_id); |
1974 | a7ae8355 | Stefano Stabellini | |
1975 | a7ae8355 | Stefano Stabellini | vmstate_save(f, se); |
1976 | a7ae8355 | Stefano Stabellini | } |
1977 | a7ae8355 | Stefano Stabellini | |
1978 | a7ae8355 | Stefano Stabellini | qemu_put_byte(f, QEMU_VM_EOF); |
1979 | a7ae8355 | Stefano Stabellini | |
1980 | a7ae8355 | Stefano Stabellini | return qemu_file_get_error(f);
|
1981 | a7ae8355 | Stefano Stabellini | } |
1982 | a7ae8355 | Stefano Stabellini | |
1983 | a672b469 | aliguori | static SaveStateEntry *find_se(const char *idstr, int instance_id) |
1984 | a672b469 | aliguori | { |
1985 | a672b469 | aliguori | SaveStateEntry *se; |
1986 | a672b469 | aliguori | |
1987 | 72cf2d4f | Blue Swirl | QTAILQ_FOREACH(se, &savevm_handlers, entry) { |
1988 | a672b469 | aliguori | if (!strcmp(se->idstr, idstr) &&
|
1989 | 4d2ffa08 | Jan Kiszka | (instance_id == se->instance_id || |
1990 | 4d2ffa08 | Jan Kiszka | instance_id == se->alias_id)) |
1991 | a672b469 | aliguori | return se;
|
1992 | 7685ee6a | Alex Williamson | /* Migrating from an older version? */
|
1993 | 7685ee6a | Alex Williamson | if (strstr(se->idstr, idstr) && se->compat) {
|
1994 | 7685ee6a | Alex Williamson | if (!strcmp(se->compat->idstr, idstr) &&
|
1995 | 7685ee6a | Alex Williamson | (instance_id == se->compat->instance_id || |
1996 | 7685ee6a | Alex Williamson | instance_id == se->alias_id)) |
1997 | 7685ee6a | Alex Williamson | return se;
|
1998 | 7685ee6a | Alex Williamson | } |
1999 | a672b469 | aliguori | } |
2000 | a672b469 | aliguori | return NULL; |
2001 | a672b469 | aliguori | } |
2002 | a672b469 | aliguori | |
2003 | 811814bd | Juan Quintela | static const VMStateDescription *vmstate_get_subsection(const VMStateSubsection *sub, char *idstr) |
2004 | 811814bd | Juan Quintela | { |
2005 | 811814bd | Juan Quintela | while(sub && sub->needed) {
|
2006 | 811814bd | Juan Quintela | if (strcmp(idstr, sub->vmsd->name) == 0) { |
2007 | 811814bd | Juan Quintela | return sub->vmsd;
|
2008 | 811814bd | Juan Quintela | } |
2009 | 811814bd | Juan Quintela | sub++; |
2010 | 811814bd | Juan Quintela | } |
2011 | 811814bd | Juan Quintela | return NULL; |
2012 | 811814bd | Juan Quintela | } |
2013 | 811814bd | Juan Quintela | |
2014 | 811814bd | Juan Quintela | static int vmstate_subsection_load(QEMUFile *f, const VMStateDescription *vmsd, |
2015 | 811814bd | Juan Quintela | void *opaque)
|
2016 | 811814bd | Juan Quintela | { |
2017 | c6380724 | Juan Quintela | while (qemu_peek_byte(f, 0) == QEMU_VM_SUBSECTION) { |
2018 | 811814bd | Juan Quintela | char idstr[256]; |
2019 | 811814bd | Juan Quintela | int ret;
|
2020 | c6380724 | Juan Quintela | uint8_t version_id, len, size; |
2021 | 811814bd | Juan Quintela | const VMStateDescription *sub_vmsd;
|
2022 | 811814bd | Juan Quintela | |
2023 | c6380724 | Juan Quintela | len = qemu_peek_byte(f, 1);
|
2024 | c6380724 | Juan Quintela | if (len < strlen(vmsd->name) + 1) { |
2025 | c6380724 | Juan Quintela | /* subsection name has be be "section_name/a" */
|
2026 | c6380724 | Juan Quintela | return 0; |
2027 | c6380724 | Juan Quintela | } |
2028 | c6380724 | Juan Quintela | size = qemu_peek_buffer(f, (uint8_t *)idstr, len, 2);
|
2029 | c6380724 | Juan Quintela | if (size != len) {
|
2030 | c6380724 | Juan Quintela | return 0; |
2031 | c6380724 | Juan Quintela | } |
2032 | c6380724 | Juan Quintela | idstr[size] = 0;
|
2033 | 811814bd | Juan Quintela | |
2034 | c6380724 | Juan Quintela | if (strncmp(vmsd->name, idstr, strlen(vmsd->name)) != 0) { |
2035 | c6380724 | Juan Quintela | /* it don't have a valid subsection name */
|
2036 | c6380724 | Juan Quintela | return 0; |
2037 | c6380724 | Juan Quintela | } |
2038 | 3da9eebd | Juan Quintela | sub_vmsd = vmstate_get_subsection(vmsd->subsections, idstr); |
2039 | 811814bd | Juan Quintela | if (sub_vmsd == NULL) { |
2040 | 811814bd | Juan Quintela | return -ENOENT;
|
2041 | 811814bd | Juan Quintela | } |
2042 | c6380724 | Juan Quintela | qemu_file_skip(f, 1); /* subsection */ |
2043 | c6380724 | Juan Quintela | qemu_file_skip(f, 1); /* len */ |
2044 | c6380724 | Juan Quintela | qemu_file_skip(f, len); /* idstr */
|
2045 | c6380724 | Juan Quintela | version_id = qemu_get_be32(f); |
2046 | c6380724 | Juan Quintela | |
2047 | 811814bd | Juan Quintela | ret = vmstate_load_state(f, sub_vmsd, opaque, version_id); |
2048 | 811814bd | Juan Quintela | if (ret) {
|
2049 | 811814bd | Juan Quintela | return ret;
|
2050 | 811814bd | Juan Quintela | } |
2051 | 811814bd | Juan Quintela | } |
2052 | 811814bd | Juan Quintela | return 0; |
2053 | 811814bd | Juan Quintela | } |
2054 | 811814bd | Juan Quintela | |
2055 | 811814bd | Juan Quintela | static void vmstate_subsection_save(QEMUFile *f, const VMStateDescription *vmsd, |
2056 | 811814bd | Juan Quintela | void *opaque)
|
2057 | 811814bd | Juan Quintela | { |
2058 | 811814bd | Juan Quintela | const VMStateSubsection *sub = vmsd->subsections;
|
2059 | 811814bd | Juan Quintela | |
2060 | 811814bd | Juan Quintela | while (sub && sub->needed) {
|
2061 | 811814bd | Juan Quintela | if (sub->needed(opaque)) {
|
2062 | 811814bd | Juan Quintela | const VMStateDescription *vmsd = sub->vmsd;
|
2063 | 811814bd | Juan Quintela | uint8_t len; |
2064 | 811814bd | Juan Quintela | |
2065 | 811814bd | Juan Quintela | qemu_put_byte(f, QEMU_VM_SUBSECTION); |
2066 | 811814bd | Juan Quintela | len = strlen(vmsd->name); |
2067 | 811814bd | Juan Quintela | qemu_put_byte(f, len); |
2068 | 811814bd | Juan Quintela | qemu_put_buffer(f, (uint8_t *)vmsd->name, len); |
2069 | 811814bd | Juan Quintela | qemu_put_be32(f, vmsd->version_id); |
2070 | 811814bd | Juan Quintela | vmstate_save_state(f, vmsd, opaque); |
2071 | 811814bd | Juan Quintela | } |
2072 | 811814bd | Juan Quintela | sub++; |
2073 | 811814bd | Juan Quintela | } |
2074 | 811814bd | Juan Quintela | } |
2075 | 811814bd | Juan Quintela | |
2076 | a672b469 | aliguori | typedef struct LoadStateEntry { |
2077 | 72cf2d4f | Blue Swirl | QLIST_ENTRY(LoadStateEntry) entry; |
2078 | a672b469 | aliguori | SaveStateEntry *se; |
2079 | a672b469 | aliguori | int section_id;
|
2080 | a672b469 | aliguori | int version_id;
|
2081 | a672b469 | aliguori | } LoadStateEntry; |
2082 | a672b469 | aliguori | |
2083 | a672b469 | aliguori | int qemu_loadvm_state(QEMUFile *f)
|
2084 | a672b469 | aliguori | { |
2085 | 72cf2d4f | Blue Swirl | QLIST_HEAD(, LoadStateEntry) loadvm_handlers = |
2086 | 72cf2d4f | Blue Swirl | QLIST_HEAD_INITIALIZER(loadvm_handlers); |
2087 | f4dbb8dd | Juan Quintela | LoadStateEntry *le, *new_le; |
2088 | a672b469 | aliguori | uint8_t section_type; |
2089 | a672b469 | aliguori | unsigned int v; |
2090 | a672b469 | aliguori | int ret;
|
2091 | a672b469 | aliguori | |
2092 | e1c37d0e | Luiz Capitulino | if (qemu_savevm_state_blocked(NULL)) { |
2093 | dc912121 | Alex Williamson | return -EINVAL;
|
2094 | dc912121 | Alex Williamson | } |
2095 | dc912121 | Alex Williamson | |
2096 | a672b469 | aliguori | v = qemu_get_be32(f); |
2097 | a672b469 | aliguori | if (v != QEMU_VM_FILE_MAGIC)
|
2098 | a672b469 | aliguori | return -EINVAL;
|
2099 | a672b469 | aliguori | |
2100 | a672b469 | aliguori | v = qemu_get_be32(f); |
2101 | bbfe1408 | Juan Quintela | if (v == QEMU_VM_FILE_VERSION_COMPAT) {
|
2102 | bbfe1408 | Juan Quintela | fprintf(stderr, "SaveVM v2 format is obsolete and don't work anymore\n");
|
2103 | bbfe1408 | Juan Quintela | return -ENOTSUP;
|
2104 | bbfe1408 | Juan Quintela | } |
2105 | a672b469 | aliguori | if (v != QEMU_VM_FILE_VERSION)
|
2106 | a672b469 | aliguori | return -ENOTSUP;
|
2107 | a672b469 | aliguori | |
2108 | a672b469 | aliguori | while ((section_type = qemu_get_byte(f)) != QEMU_VM_EOF) {
|
2109 | a672b469 | aliguori | uint32_t instance_id, version_id, section_id; |
2110 | a672b469 | aliguori | SaveStateEntry *se; |
2111 | a672b469 | aliguori | char idstr[257]; |
2112 | a672b469 | aliguori | int len;
|
2113 | a672b469 | aliguori | |
2114 | a672b469 | aliguori | switch (section_type) {
|
2115 | a672b469 | aliguori | case QEMU_VM_SECTION_START:
|
2116 | a672b469 | aliguori | case QEMU_VM_SECTION_FULL:
|
2117 | a672b469 | aliguori | /* Read section start */
|
2118 | a672b469 | aliguori | section_id = qemu_get_be32(f); |
2119 | a672b469 | aliguori | len = qemu_get_byte(f); |
2120 | a672b469 | aliguori | qemu_get_buffer(f, (uint8_t *)idstr, len); |
2121 | a672b469 | aliguori | idstr[len] = 0;
|
2122 | a672b469 | aliguori | instance_id = qemu_get_be32(f); |
2123 | a672b469 | aliguori | version_id = qemu_get_be32(f); |
2124 | a672b469 | aliguori | |
2125 | a672b469 | aliguori | /* Find savevm section */
|
2126 | a672b469 | aliguori | se = find_se(idstr, instance_id); |
2127 | a672b469 | aliguori | if (se == NULL) { |
2128 | a672b469 | aliguori | fprintf(stderr, "Unknown savevm section or instance '%s' %d\n", idstr, instance_id);
|
2129 | a672b469 | aliguori | ret = -EINVAL; |
2130 | a672b469 | aliguori | goto out;
|
2131 | a672b469 | aliguori | } |
2132 | a672b469 | aliguori | |
2133 | a672b469 | aliguori | /* Validate version */
|
2134 | a672b469 | aliguori | if (version_id > se->version_id) {
|
2135 | a672b469 | aliguori | fprintf(stderr, "savevm: unsupported version %d for '%s' v%d\n",
|
2136 | a672b469 | aliguori | version_id, idstr, se->version_id); |
2137 | a672b469 | aliguori | ret = -EINVAL; |
2138 | a672b469 | aliguori | goto out;
|
2139 | a672b469 | aliguori | } |
2140 | a672b469 | aliguori | |
2141 | a672b469 | aliguori | /* Add entry */
|
2142 | 7267c094 | Anthony Liguori | le = g_malloc0(sizeof(*le));
|
2143 | a672b469 | aliguori | |
2144 | a672b469 | aliguori | le->se = se; |
2145 | a672b469 | aliguori | le->section_id = section_id; |
2146 | a672b469 | aliguori | le->version_id = version_id; |
2147 | 72cf2d4f | Blue Swirl | QLIST_INSERT_HEAD(&loadvm_handlers, le, entry); |
2148 | a672b469 | aliguori | |
2149 | 4082be4d | Juan Quintela | ret = vmstate_load(f, le->se, le->version_id); |
2150 | b5a22e4a | Juan Quintela | if (ret < 0) { |
2151 | b5a22e4a | Juan Quintela | fprintf(stderr, "qemu: warning: error while loading state for instance 0x%x of device '%s'\n",
|
2152 | b5a22e4a | Juan Quintela | instance_id, idstr); |
2153 | b5a22e4a | Juan Quintela | goto out;
|
2154 | b5a22e4a | Juan Quintela | } |
2155 | a672b469 | aliguori | break;
|
2156 | a672b469 | aliguori | case QEMU_VM_SECTION_PART:
|
2157 | a672b469 | aliguori | case QEMU_VM_SECTION_END:
|
2158 | a672b469 | aliguori | section_id = qemu_get_be32(f); |
2159 | a672b469 | aliguori | |
2160 | 72cf2d4f | Blue Swirl | QLIST_FOREACH(le, &loadvm_handlers, entry) { |
2161 | f4dbb8dd | Juan Quintela | if (le->section_id == section_id) {
|
2162 | f4dbb8dd | Juan Quintela | break;
|
2163 | f4dbb8dd | Juan Quintela | } |
2164 | f4dbb8dd | Juan Quintela | } |
2165 | a672b469 | aliguori | if (le == NULL) { |
2166 | a672b469 | aliguori | fprintf(stderr, "Unknown savevm section %d\n", section_id);
|
2167 | a672b469 | aliguori | ret = -EINVAL; |
2168 | a672b469 | aliguori | goto out;
|
2169 | a672b469 | aliguori | } |
2170 | a672b469 | aliguori | |
2171 | 4082be4d | Juan Quintela | ret = vmstate_load(f, le->se, le->version_id); |
2172 | b5a22e4a | Juan Quintela | if (ret < 0) { |
2173 | b5a22e4a | Juan Quintela | fprintf(stderr, "qemu: warning: error while loading state section id %d\n",
|
2174 | b5a22e4a | Juan Quintela | section_id); |
2175 | b5a22e4a | Juan Quintela | goto out;
|
2176 | b5a22e4a | Juan Quintela | } |
2177 | a672b469 | aliguori | break;
|
2178 | a672b469 | aliguori | default:
|
2179 | a672b469 | aliguori | fprintf(stderr, "Unknown savevm section type %d\n", section_type);
|
2180 | a672b469 | aliguori | ret = -EINVAL; |
2181 | a672b469 | aliguori | goto out;
|
2182 | a672b469 | aliguori | } |
2183 | a672b469 | aliguori | } |
2184 | a672b469 | aliguori | |
2185 | ea375f9a | Jan Kiszka | cpu_synchronize_all_post_init(); |
2186 | ea375f9a | Jan Kiszka | |
2187 | a672b469 | aliguori | ret = 0;
|
2188 | a672b469 | aliguori | |
2189 | a672b469 | aliguori | out:
|
2190 | 72cf2d4f | Blue Swirl | QLIST_FOREACH_SAFE(le, &loadvm_handlers, entry, new_le) { |
2191 | 72cf2d4f | Blue Swirl | QLIST_REMOVE(le, entry); |
2192 | 7267c094 | Anthony Liguori | g_free(le); |
2193 | a672b469 | aliguori | } |
2194 | a672b469 | aliguori | |
2195 | 42802d47 | Juan Quintela | if (ret == 0) { |
2196 | 42802d47 | Juan Quintela | ret = qemu_file_get_error(f); |
2197 | 624b9cc2 | Juan Quintela | } |
2198 | a672b469 | aliguori | |
2199 | a672b469 | aliguori | return ret;
|
2200 | a672b469 | aliguori | } |
2201 | a672b469 | aliguori | |
2202 | a672b469 | aliguori | static int bdrv_snapshot_find(BlockDriverState *bs, QEMUSnapshotInfo *sn_info, |
2203 | a672b469 | aliguori | const char *name) |
2204 | a672b469 | aliguori | { |
2205 | a672b469 | aliguori | QEMUSnapshotInfo *sn_tab, *sn; |
2206 | a672b469 | aliguori | int nb_sns, i, ret;
|
2207 | a672b469 | aliguori | |
2208 | a672b469 | aliguori | ret = -ENOENT; |
2209 | a672b469 | aliguori | nb_sns = bdrv_snapshot_list(bs, &sn_tab); |
2210 | a672b469 | aliguori | if (nb_sns < 0) |
2211 | a672b469 | aliguori | return ret;
|
2212 | a672b469 | aliguori | for(i = 0; i < nb_sns; i++) { |
2213 | a672b469 | aliguori | sn = &sn_tab[i]; |
2214 | a672b469 | aliguori | if (!strcmp(sn->id_str, name) || !strcmp(sn->name, name)) {
|
2215 | a672b469 | aliguori | *sn_info = *sn; |
2216 | a672b469 | aliguori | ret = 0;
|
2217 | a672b469 | aliguori | break;
|
2218 | a672b469 | aliguori | } |
2219 | a672b469 | aliguori | } |
2220 | 7267c094 | Anthony Liguori | g_free(sn_tab); |
2221 | a672b469 | aliguori | return ret;
|
2222 | a672b469 | aliguori | } |
2223 | a672b469 | aliguori | |
2224 | cb499fb2 | Kevin Wolf | /*
|
2225 | cb499fb2 | Kevin Wolf | * Deletes snapshots of a given name in all opened images.
|
2226 | cb499fb2 | Kevin Wolf | */
|
2227 | cb499fb2 | Kevin Wolf | static int del_existing_snapshots(Monitor *mon, const char *name) |
2228 | cb499fb2 | Kevin Wolf | { |
2229 | cb499fb2 | Kevin Wolf | BlockDriverState *bs; |
2230 | cb499fb2 | Kevin Wolf | QEMUSnapshotInfo sn1, *snapshot = &sn1; |
2231 | cb499fb2 | Kevin Wolf | int ret;
|
2232 | cb499fb2 | Kevin Wolf | |
2233 | dbc13590 | Markus Armbruster | bs = NULL;
|
2234 | dbc13590 | Markus Armbruster | while ((bs = bdrv_next(bs))) {
|
2235 | cb499fb2 | Kevin Wolf | if (bdrv_can_snapshot(bs) &&
|
2236 | cb499fb2 | Kevin Wolf | bdrv_snapshot_find(bs, snapshot, name) >= 0)
|
2237 | cb499fb2 | Kevin Wolf | { |
2238 | cb499fb2 | Kevin Wolf | ret = bdrv_snapshot_delete(bs, name); |
2239 | cb499fb2 | Kevin Wolf | if (ret < 0) { |
2240 | cb499fb2 | Kevin Wolf | monitor_printf(mon, |
2241 | cb499fb2 | Kevin Wolf | "Error while deleting snapshot on '%s'\n",
|
2242 | cb499fb2 | Kevin Wolf | bdrv_get_device_name(bs)); |
2243 | cb499fb2 | Kevin Wolf | return -1; |
2244 | cb499fb2 | Kevin Wolf | } |
2245 | cb499fb2 | Kevin Wolf | } |
2246 | cb499fb2 | Kevin Wolf | } |
2247 | cb499fb2 | Kevin Wolf | |
2248 | cb499fb2 | Kevin Wolf | return 0; |
2249 | cb499fb2 | Kevin Wolf | } |
2250 | cb499fb2 | Kevin Wolf | |
2251 | d54908a5 | Luiz Capitulino | void do_savevm(Monitor *mon, const QDict *qdict) |
2252 | a672b469 | aliguori | { |
2253 | a672b469 | aliguori | BlockDriverState *bs, *bs1; |
2254 | a672b469 | aliguori | QEMUSnapshotInfo sn1, *sn = &sn1, old_sn1, *old_sn = &old_sn1; |
2255 | cb499fb2 | Kevin Wolf | int ret;
|
2256 | a672b469 | aliguori | QEMUFile *f; |
2257 | a672b469 | aliguori | int saved_vm_running;
|
2258 | c2c9a466 | Kevin Wolf | uint64_t vm_state_size; |
2259 | 68b891ec | Stefan Weil | qemu_timeval tv; |
2260 | 7d631a11 | Miguel Di Ciurcio Filho | struct tm tm;
|
2261 | d54908a5 | Luiz Capitulino | const char *name = qdict_get_try_str(qdict, "name"); |
2262 | a672b469 | aliguori | |
2263 | feeee5ac | Miguel Di Ciurcio Filho | /* Verify if there is a device that doesn't support snapshots and is writable */
|
2264 | dbc13590 | Markus Armbruster | bs = NULL;
|
2265 | dbc13590 | Markus Armbruster | while ((bs = bdrv_next(bs))) {
|
2266 | feeee5ac | Miguel Di Ciurcio Filho | |
2267 | 07b70bfb | Markus Armbruster | if (!bdrv_is_inserted(bs) || bdrv_is_read_only(bs)) {
|
2268 | feeee5ac | Miguel Di Ciurcio Filho | continue;
|
2269 | feeee5ac | Miguel Di Ciurcio Filho | } |
2270 | feeee5ac | Miguel Di Ciurcio Filho | |
2271 | feeee5ac | Miguel Di Ciurcio Filho | if (!bdrv_can_snapshot(bs)) {
|
2272 | feeee5ac | Miguel Di Ciurcio Filho | monitor_printf(mon, "Device '%s' is writable but does not support snapshots.\n",
|
2273 | feeee5ac | Miguel Di Ciurcio Filho | bdrv_get_device_name(bs)); |
2274 | feeee5ac | Miguel Di Ciurcio Filho | return;
|
2275 | feeee5ac | Miguel Di Ciurcio Filho | } |
2276 | feeee5ac | Miguel Di Ciurcio Filho | } |
2277 | feeee5ac | Miguel Di Ciurcio Filho | |
2278 | f9092b10 | Markus Armbruster | bs = bdrv_snapshots(); |
2279 | a672b469 | aliguori | if (!bs) {
|
2280 | 376253ec | aliguori | monitor_printf(mon, "No block device can accept snapshots\n");
|
2281 | a672b469 | aliguori | return;
|
2282 | a672b469 | aliguori | } |
2283 | a672b469 | aliguori | |
2284 | 1354869c | Luiz Capitulino | saved_vm_running = runstate_is_running(); |
2285 | 0461d5a6 | Luiz Capitulino | vm_stop(RUN_STATE_SAVE_VM); |
2286 | a672b469 | aliguori | |
2287 | cb499fb2 | Kevin Wolf | memset(sn, 0, sizeof(*sn)); |
2288 | a672b469 | aliguori | |
2289 | a672b469 | aliguori | /* fill auxiliary fields */
|
2290 | 68b891ec | Stefan Weil | qemu_gettimeofday(&tv); |
2291 | a672b469 | aliguori | sn->date_sec = tv.tv_sec; |
2292 | a672b469 | aliguori | sn->date_nsec = tv.tv_usec * 1000;
|
2293 | 74475455 | Paolo Bonzini | sn->vm_clock_nsec = qemu_get_clock_ns(vm_clock); |
2294 | a672b469 | aliguori | |
2295 | 7d631a11 | Miguel Di Ciurcio Filho | if (name) {
|
2296 | 7d631a11 | Miguel Di Ciurcio Filho | ret = bdrv_snapshot_find(bs, old_sn, name); |
2297 | 7d631a11 | Miguel Di Ciurcio Filho | if (ret >= 0) { |
2298 | 7d631a11 | Miguel Di Ciurcio Filho | pstrcpy(sn->name, sizeof(sn->name), old_sn->name);
|
2299 | 7d631a11 | Miguel Di Ciurcio Filho | pstrcpy(sn->id_str, sizeof(sn->id_str), old_sn->id_str);
|
2300 | 7d631a11 | Miguel Di Ciurcio Filho | } else {
|
2301 | 7d631a11 | Miguel Di Ciurcio Filho | pstrcpy(sn->name, sizeof(sn->name), name);
|
2302 | 7d631a11 | Miguel Di Ciurcio Filho | } |
2303 | 7d631a11 | Miguel Di Ciurcio Filho | } else {
|
2304 | d7d9b528 | Blue Swirl | /* cast below needed for OpenBSD where tv_sec is still 'long' */
|
2305 | d7d9b528 | Blue Swirl | localtime_r((const time_t *)&tv.tv_sec, &tm);
|
2306 | 7d631a11 | Miguel Di Ciurcio Filho | strftime(sn->name, sizeof(sn->name), "vm-%Y%m%d%H%M%S", &tm); |
2307 | 7d631a11 | Miguel Di Ciurcio Filho | } |
2308 | 7d631a11 | Miguel Di Ciurcio Filho | |
2309 | cb499fb2 | Kevin Wolf | /* Delete old snapshots of the same name */
|
2310 | f139a412 | Marcelo Tosatti | if (name && del_existing_snapshots(mon, name) < 0) { |
2311 | cb499fb2 | Kevin Wolf | goto the_end;
|
2312 | cb499fb2 | Kevin Wolf | } |
2313 | cb499fb2 | Kevin Wolf | |
2314 | a672b469 | aliguori | /* save the VM state */
|
2315 | 45566e9c | Christoph Hellwig | f = qemu_fopen_bdrv(bs, 1);
|
2316 | a672b469 | aliguori | if (!f) {
|
2317 | 376253ec | aliguori | monitor_printf(mon, "Could not open VM state file\n");
|
2318 | a672b469 | aliguori | goto the_end;
|
2319 | a672b469 | aliguori | } |
2320 | e1c37d0e | Luiz Capitulino | ret = qemu_savevm_state(f); |
2321 | 2d22b18f | aliguori | vm_state_size = qemu_ftell(f); |
2322 | a672b469 | aliguori | qemu_fclose(f); |
2323 | a672b469 | aliguori | if (ret < 0) { |
2324 | 376253ec | aliguori | monitor_printf(mon, "Error %d while writing VM\n", ret);
|
2325 | a672b469 | aliguori | goto the_end;
|
2326 | a672b469 | aliguori | } |
2327 | a672b469 | aliguori | |
2328 | a672b469 | aliguori | /* create the snapshots */
|
2329 | a672b469 | aliguori | |
2330 | dbc13590 | Markus Armbruster | bs1 = NULL;
|
2331 | dbc13590 | Markus Armbruster | while ((bs1 = bdrv_next(bs1))) {
|
2332 | feeee5ac | Miguel Di Ciurcio Filho | if (bdrv_can_snapshot(bs1)) {
|
2333 | 2d22b18f | aliguori | /* Write VM state size only to the image that contains the state */
|
2334 | 2d22b18f | aliguori | sn->vm_state_size = (bs == bs1 ? vm_state_size : 0);
|
2335 | a672b469 | aliguori | ret = bdrv_snapshot_create(bs1, sn); |
2336 | a672b469 | aliguori | if (ret < 0) { |
2337 | 376253ec | aliguori | monitor_printf(mon, "Error while creating snapshot on '%s'\n",
|
2338 | 376253ec | aliguori | bdrv_get_device_name(bs1)); |
2339 | a672b469 | aliguori | } |
2340 | a672b469 | aliguori | } |
2341 | a672b469 | aliguori | } |
2342 | a672b469 | aliguori | |
2343 | a672b469 | aliguori | the_end:
|
2344 | a672b469 | aliguori | if (saved_vm_running)
|
2345 | a672b469 | aliguori | vm_start(); |
2346 | a672b469 | aliguori | } |
2347 | a672b469 | aliguori | |
2348 | a7ae8355 | Stefano Stabellini | void qmp_xen_save_devices_state(const char *filename, Error **errp) |
2349 | a7ae8355 | Stefano Stabellini | { |
2350 | a7ae8355 | Stefano Stabellini | QEMUFile *f; |
2351 | a7ae8355 | Stefano Stabellini | int saved_vm_running;
|
2352 | a7ae8355 | Stefano Stabellini | int ret;
|
2353 | a7ae8355 | Stefano Stabellini | |
2354 | a7ae8355 | Stefano Stabellini | saved_vm_running = runstate_is_running(); |
2355 | a7ae8355 | Stefano Stabellini | vm_stop(RUN_STATE_SAVE_VM); |
2356 | a7ae8355 | Stefano Stabellini | |
2357 | a7ae8355 | Stefano Stabellini | f = qemu_fopen(filename, "wb");
|
2358 | a7ae8355 | Stefano Stabellini | if (!f) {
|
2359 | a7ae8355 | Stefano Stabellini | error_set(errp, QERR_OPEN_FILE_FAILED, filename); |
2360 | a7ae8355 | Stefano Stabellini | goto the_end;
|
2361 | a7ae8355 | Stefano Stabellini | } |
2362 | a7ae8355 | Stefano Stabellini | ret = qemu_save_device_state(f); |
2363 | a7ae8355 | Stefano Stabellini | qemu_fclose(f); |
2364 | a7ae8355 | Stefano Stabellini | if (ret < 0) { |
2365 | a7ae8355 | Stefano Stabellini | error_set(errp, QERR_IO_ERROR); |
2366 | a7ae8355 | Stefano Stabellini | } |
2367 | a7ae8355 | Stefano Stabellini | |
2368 | a7ae8355 | Stefano Stabellini | the_end:
|
2369 | a7ae8355 | Stefano Stabellini | if (saved_vm_running)
|
2370 | a7ae8355 | Stefano Stabellini | vm_start(); |
2371 | a7ae8355 | Stefano Stabellini | } |
2372 | a7ae8355 | Stefano Stabellini | |
2373 | 03cd4655 | Markus Armbruster | int load_vmstate(const char *name) |
2374 | a672b469 | aliguori | { |
2375 | f0aa7a8b | Miguel Di Ciurcio Filho | BlockDriverState *bs, *bs_vm_state; |
2376 | 2d22b18f | aliguori | QEMUSnapshotInfo sn; |
2377 | a672b469 | aliguori | QEMUFile *f; |
2378 | 751c6a17 | Gerd Hoffmann | int ret;
|
2379 | a672b469 | aliguori | |
2380 | f0aa7a8b | Miguel Di Ciurcio Filho | bs_vm_state = bdrv_snapshots(); |
2381 | f0aa7a8b | Miguel Di Ciurcio Filho | if (!bs_vm_state) {
|
2382 | f0aa7a8b | Miguel Di Ciurcio Filho | error_report("No block device supports snapshots");
|
2383 | f0aa7a8b | Miguel Di Ciurcio Filho | return -ENOTSUP;
|
2384 | f0aa7a8b | Miguel Di Ciurcio Filho | } |
2385 | f0aa7a8b | Miguel Di Ciurcio Filho | |
2386 | f0aa7a8b | Miguel Di Ciurcio Filho | /* Don't even try to load empty VM states */
|
2387 | f0aa7a8b | Miguel Di Ciurcio Filho | ret = bdrv_snapshot_find(bs_vm_state, &sn, name); |
2388 | f0aa7a8b | Miguel Di Ciurcio Filho | if (ret < 0) { |
2389 | f0aa7a8b | Miguel Di Ciurcio Filho | return ret;
|
2390 | f0aa7a8b | Miguel Di Ciurcio Filho | } else if (sn.vm_state_size == 0) { |
2391 | e11480db | Kevin Wolf | error_report("This is a disk-only snapshot. Revert to it offline "
|
2392 | e11480db | Kevin Wolf | "using qemu-img.");
|
2393 | f0aa7a8b | Miguel Di Ciurcio Filho | return -EINVAL;
|
2394 | f0aa7a8b | Miguel Di Ciurcio Filho | } |
2395 | f0aa7a8b | Miguel Di Ciurcio Filho | |
2396 | f0aa7a8b | Miguel Di Ciurcio Filho | /* Verify if there is any device that doesn't support snapshots and is
|
2397 | f0aa7a8b | Miguel Di Ciurcio Filho | writable and check if the requested snapshot is available too. */
|
2398 | dbc13590 | Markus Armbruster | bs = NULL;
|
2399 | dbc13590 | Markus Armbruster | while ((bs = bdrv_next(bs))) {
|
2400 | feeee5ac | Miguel Di Ciurcio Filho | |
2401 | 07b70bfb | Markus Armbruster | if (!bdrv_is_inserted(bs) || bdrv_is_read_only(bs)) {
|
2402 | feeee5ac | Miguel Di Ciurcio Filho | continue;
|
2403 | feeee5ac | Miguel Di Ciurcio Filho | } |
2404 | feeee5ac | Miguel Di Ciurcio Filho | |
2405 | feeee5ac | Miguel Di Ciurcio Filho | if (!bdrv_can_snapshot(bs)) {
|
2406 | feeee5ac | Miguel Di Ciurcio Filho | error_report("Device '%s' is writable but does not support snapshots.",
|
2407 | feeee5ac | Miguel Di Ciurcio Filho | bdrv_get_device_name(bs)); |
2408 | feeee5ac | Miguel Di Ciurcio Filho | return -ENOTSUP;
|
2409 | feeee5ac | Miguel Di Ciurcio Filho | } |
2410 | feeee5ac | Miguel Di Ciurcio Filho | |
2411 | f0aa7a8b | Miguel Di Ciurcio Filho | ret = bdrv_snapshot_find(bs, &sn, name); |
2412 | f0aa7a8b | Miguel Di Ciurcio Filho | if (ret < 0) { |
2413 | f0aa7a8b | Miguel Di Ciurcio Filho | error_report("Device '%s' does not have the requested snapshot '%s'",
|
2414 | f0aa7a8b | Miguel Di Ciurcio Filho | bdrv_get_device_name(bs), name); |
2415 | f0aa7a8b | Miguel Di Ciurcio Filho | return ret;
|
2416 | f0aa7a8b | Miguel Di Ciurcio Filho | } |
2417 | a672b469 | aliguori | } |
2418 | a672b469 | aliguori | |
2419 | a672b469 | aliguori | /* Flush all IO requests so they don't interfere with the new state. */
|
2420 | 922453bc | Stefan Hajnoczi | bdrv_drain_all(); |
2421 | a672b469 | aliguori | |
2422 | f0aa7a8b | Miguel Di Ciurcio Filho | bs = NULL;
|
2423 | f0aa7a8b | Miguel Di Ciurcio Filho | while ((bs = bdrv_next(bs))) {
|
2424 | f0aa7a8b | Miguel Di Ciurcio Filho | if (bdrv_can_snapshot(bs)) {
|
2425 | f0aa7a8b | Miguel Di Ciurcio Filho | ret = bdrv_snapshot_goto(bs, name); |
2426 | a672b469 | aliguori | if (ret < 0) { |
2427 | f0aa7a8b | Miguel Di Ciurcio Filho | error_report("Error %d while activating snapshot '%s' on '%s'",
|
2428 | f0aa7a8b | Miguel Di Ciurcio Filho | ret, name, bdrv_get_device_name(bs)); |
2429 | f0aa7a8b | Miguel Di Ciurcio Filho | return ret;
|
2430 | a672b469 | aliguori | } |
2431 | a672b469 | aliguori | } |
2432 | a672b469 | aliguori | } |
2433 | a672b469 | aliguori | |
2434 | a672b469 | aliguori | /* restore the VM state */
|
2435 | f0aa7a8b | Miguel Di Ciurcio Filho | f = qemu_fopen_bdrv(bs_vm_state, 0);
|
2436 | a672b469 | aliguori | if (!f) {
|
2437 | 1ecda02b | Markus Armbruster | error_report("Could not open VM state file");
|
2438 | 05f2401e | Juan Quintela | return -EINVAL;
|
2439 | a672b469 | aliguori | } |
2440 | f0aa7a8b | Miguel Di Ciurcio Filho | |
2441 | 5a8a49d7 | Jan Kiszka | qemu_system_reset(VMRESET_SILENT); |
2442 | a672b469 | aliguori | ret = qemu_loadvm_state(f); |
2443 | f0aa7a8b | Miguel Di Ciurcio Filho | |
2444 | a672b469 | aliguori | qemu_fclose(f); |
2445 | a672b469 | aliguori | if (ret < 0) { |
2446 | 1ecda02b | Markus Armbruster | error_report("Error %d while loading VM state", ret);
|
2447 | 05f2401e | Juan Quintela | return ret;
|
2448 | a672b469 | aliguori | } |
2449 | f0aa7a8b | Miguel Di Ciurcio Filho | |
2450 | 05f2401e | Juan Quintela | return 0; |
2451 | 7b630349 | Juan Quintela | } |
2452 | 7b630349 | Juan Quintela | |
2453 | d54908a5 | Luiz Capitulino | void do_delvm(Monitor *mon, const QDict *qdict) |
2454 | a672b469 | aliguori | { |
2455 | a672b469 | aliguori | BlockDriverState *bs, *bs1; |
2456 | 751c6a17 | Gerd Hoffmann | int ret;
|
2457 | d54908a5 | Luiz Capitulino | const char *name = qdict_get_str(qdict, "name"); |
2458 | a672b469 | aliguori | |
2459 | f9092b10 | Markus Armbruster | bs = bdrv_snapshots(); |
2460 | a672b469 | aliguori | if (!bs) {
|
2461 | 376253ec | aliguori | monitor_printf(mon, "No block device supports snapshots\n");
|
2462 | a672b469 | aliguori | return;
|
2463 | a672b469 | aliguori | } |
2464 | a672b469 | aliguori | |
2465 | dbc13590 | Markus Armbruster | bs1 = NULL;
|
2466 | dbc13590 | Markus Armbruster | while ((bs1 = bdrv_next(bs1))) {
|
2467 | feeee5ac | Miguel Di Ciurcio Filho | if (bdrv_can_snapshot(bs1)) {
|
2468 | a672b469 | aliguori | ret = bdrv_snapshot_delete(bs1, name); |
2469 | a672b469 | aliguori | if (ret < 0) { |
2470 | a672b469 | aliguori | if (ret == -ENOTSUP)
|
2471 | 376253ec | aliguori | monitor_printf(mon, |
2472 | 376253ec | aliguori | "Snapshots not supported on device '%s'\n",
|
2473 | 376253ec | aliguori | bdrv_get_device_name(bs1)); |
2474 | a672b469 | aliguori | else
|
2475 | 376253ec | aliguori | monitor_printf(mon, "Error %d while deleting snapshot on "
|
2476 | 376253ec | aliguori | "'%s'\n", ret, bdrv_get_device_name(bs1));
|
2477 | a672b469 | aliguori | } |
2478 | a672b469 | aliguori | } |
2479 | a672b469 | aliguori | } |
2480 | a672b469 | aliguori | } |
2481 | a672b469 | aliguori | |
2482 | 84f2d0ea | Wenchao Xia | void do_info_snapshots(Monitor *mon, const QDict *qdict) |
2483 | a672b469 | aliguori | { |
2484 | a672b469 | aliguori | BlockDriverState *bs, *bs1; |
2485 | f9209915 | Miguel Di Ciurcio Filho | QEMUSnapshotInfo *sn_tab, *sn, s, *sn_info = &s; |
2486 | f9209915 | Miguel Di Ciurcio Filho | int nb_sns, i, ret, available;
|
2487 | f9209915 | Miguel Di Ciurcio Filho | int total;
|
2488 | f9209915 | Miguel Di Ciurcio Filho | int *available_snapshots;
|
2489 | a672b469 | aliguori | char buf[256]; |
2490 | a672b469 | aliguori | |
2491 | f9092b10 | Markus Armbruster | bs = bdrv_snapshots(); |
2492 | a672b469 | aliguori | if (!bs) {
|
2493 | 376253ec | aliguori | monitor_printf(mon, "No available block device supports snapshots\n");
|
2494 | a672b469 | aliguori | return;
|
2495 | a672b469 | aliguori | } |
2496 | a672b469 | aliguori | |
2497 | a672b469 | aliguori | nb_sns = bdrv_snapshot_list(bs, &sn_tab); |
2498 | a672b469 | aliguori | if (nb_sns < 0) { |
2499 | 376253ec | aliguori | monitor_printf(mon, "bdrv_snapshot_list: error %d\n", nb_sns);
|
2500 | a672b469 | aliguori | return;
|
2501 | a672b469 | aliguori | } |
2502 | f9209915 | Miguel Di Ciurcio Filho | |
2503 | f9209915 | Miguel Di Ciurcio Filho | if (nb_sns == 0) { |
2504 | f9209915 | Miguel Di Ciurcio Filho | monitor_printf(mon, "There is no snapshot available.\n");
|
2505 | f9209915 | Miguel Di Ciurcio Filho | return;
|
2506 | f9209915 | Miguel Di Ciurcio Filho | } |
2507 | f9209915 | Miguel Di Ciurcio Filho | |
2508 | 7267c094 | Anthony Liguori | available_snapshots = g_malloc0(sizeof(int) * nb_sns); |
2509 | f9209915 | Miguel Di Ciurcio Filho | total = 0;
|
2510 | f9209915 | Miguel Di Ciurcio Filho | for (i = 0; i < nb_sns; i++) { |
2511 | a672b469 | aliguori | sn = &sn_tab[i]; |
2512 | f9209915 | Miguel Di Ciurcio Filho | available = 1;
|
2513 | f9209915 | Miguel Di Ciurcio Filho | bs1 = NULL;
|
2514 | f9209915 | Miguel Di Ciurcio Filho | |
2515 | f9209915 | Miguel Di Ciurcio Filho | while ((bs1 = bdrv_next(bs1))) {
|
2516 | f9209915 | Miguel Di Ciurcio Filho | if (bdrv_can_snapshot(bs1) && bs1 != bs) {
|
2517 | f9209915 | Miguel Di Ciurcio Filho | ret = bdrv_snapshot_find(bs1, sn_info, sn->id_str); |
2518 | f9209915 | Miguel Di Ciurcio Filho | if (ret < 0) { |
2519 | f9209915 | Miguel Di Ciurcio Filho | available = 0;
|
2520 | f9209915 | Miguel Di Ciurcio Filho | break;
|
2521 | f9209915 | Miguel Di Ciurcio Filho | } |
2522 | f9209915 | Miguel Di Ciurcio Filho | } |
2523 | f9209915 | Miguel Di Ciurcio Filho | } |
2524 | f9209915 | Miguel Di Ciurcio Filho | |
2525 | f9209915 | Miguel Di Ciurcio Filho | if (available) {
|
2526 | f9209915 | Miguel Di Ciurcio Filho | available_snapshots[total] = i; |
2527 | f9209915 | Miguel Di Ciurcio Filho | total++; |
2528 | f9209915 | Miguel Di Ciurcio Filho | } |
2529 | a672b469 | aliguori | } |
2530 | f9209915 | Miguel Di Ciurcio Filho | |
2531 | f9209915 | Miguel Di Ciurcio Filho | if (total > 0) { |
2532 | f9209915 | Miguel Di Ciurcio Filho | monitor_printf(mon, "%s\n", bdrv_snapshot_dump(buf, sizeof(buf), NULL)); |
2533 | f9209915 | Miguel Di Ciurcio Filho | for (i = 0; i < total; i++) { |
2534 | f9209915 | Miguel Di Ciurcio Filho | sn = &sn_tab[available_snapshots[i]]; |
2535 | f9209915 | Miguel Di Ciurcio Filho | monitor_printf(mon, "%s\n", bdrv_snapshot_dump(buf, sizeof(buf), sn)); |
2536 | f9209915 | Miguel Di Ciurcio Filho | } |
2537 | f9209915 | Miguel Di Ciurcio Filho | } else {
|
2538 | f9209915 | Miguel Di Ciurcio Filho | monitor_printf(mon, "There is no suitable snapshot available\n");
|
2539 | f9209915 | Miguel Di Ciurcio Filho | } |
2540 | f9209915 | Miguel Di Ciurcio Filho | |
2541 | 7267c094 | Anthony Liguori | g_free(sn_tab); |
2542 | 7267c094 | Anthony Liguori | g_free(available_snapshots); |
2543 | f9209915 | Miguel Di Ciurcio Filho | |
2544 | a672b469 | aliguori | } |
2545 | c5705a77 | Avi Kivity | |
2546 | c5705a77 | Avi Kivity | void vmstate_register_ram(MemoryRegion *mr, DeviceState *dev)
|
2547 | c5705a77 | Avi Kivity | { |
2548 | 1ddde087 | Avi Kivity | qemu_ram_set_idstr(memory_region_get_ram_addr(mr) & TARGET_PAGE_MASK, |
2549 | c5705a77 | Avi Kivity | memory_region_name(mr), dev); |
2550 | c5705a77 | Avi Kivity | } |
2551 | c5705a77 | Avi Kivity | |
2552 | c5705a77 | Avi Kivity | void vmstate_unregister_ram(MemoryRegion *mr, DeviceState *dev)
|
2553 | c5705a77 | Avi Kivity | { |
2554 | c5705a77 | Avi Kivity | /* Nothing do to while the implementation is in RAMBlock */
|
2555 | c5705a77 | Avi Kivity | } |
2556 | c5705a77 | Avi Kivity | |
2557 | c5705a77 | Avi Kivity | void vmstate_register_ram_global(MemoryRegion *mr)
|
2558 | c5705a77 | Avi Kivity | { |
2559 | c5705a77 | Avi Kivity | vmstate_register_ram(mr, NULL);
|
2560 | c5705a77 | Avi Kivity | } |