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1 | d9d33417 | Stefan Hajnoczi | /*
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2 | d9d33417 | Stefan Hajnoczi | * Block protocol for block driver correctness testing
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3 | d9d33417 | Stefan Hajnoczi | *
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4 | d9d33417 | Stefan Hajnoczi | * Copyright (C) 2010 IBM, Corp.
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5 | d9d33417 | Stefan Hajnoczi | *
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6 | d9d33417 | Stefan Hajnoczi | * This work is licensed under the terms of the GNU GPL, version 2 or later.
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7 | d9d33417 | Stefan Hajnoczi | * See the COPYING file in the top-level directory.
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8 | d9d33417 | Stefan Hajnoczi | */
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9 | d9d33417 | Stefan Hajnoczi | |
10 | d9d33417 | Stefan Hajnoczi | #include <stdarg.h> |
11 | 1de7afc9 | Paolo Bonzini | #include "qemu/sockets.h" /* for EINPROGRESS on Windows */ |
12 | 737e150e | Paolo Bonzini | #include "block/block_int.h" |
13 | d9d33417 | Stefan Hajnoczi | |
14 | d9d33417 | Stefan Hajnoczi | typedef struct { |
15 | d9d33417 | Stefan Hajnoczi | BlockDriverState *test_file; |
16 | d9d33417 | Stefan Hajnoczi | } BDRVBlkverifyState; |
17 | d9d33417 | Stefan Hajnoczi | |
18 | d9d33417 | Stefan Hajnoczi | typedef struct BlkverifyAIOCB BlkverifyAIOCB; |
19 | d9d33417 | Stefan Hajnoczi | struct BlkverifyAIOCB {
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20 | d9d33417 | Stefan Hajnoczi | BlockDriverAIOCB common; |
21 | d9d33417 | Stefan Hajnoczi | QEMUBH *bh; |
22 | d9d33417 | Stefan Hajnoczi | |
23 | d9d33417 | Stefan Hajnoczi | /* Request metadata */
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24 | d9d33417 | Stefan Hajnoczi | bool is_write;
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25 | d9d33417 | Stefan Hajnoczi | int64_t sector_num; |
26 | d9d33417 | Stefan Hajnoczi | int nb_sectors;
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27 | d9d33417 | Stefan Hajnoczi | |
28 | d9d33417 | Stefan Hajnoczi | int ret; /* first completed request's result */ |
29 | d9d33417 | Stefan Hajnoczi | unsigned int done; /* completion counter */ |
30 | d9d33417 | Stefan Hajnoczi | bool *finished; /* completion signal for cancel */ |
31 | d9d33417 | Stefan Hajnoczi | |
32 | d9d33417 | Stefan Hajnoczi | QEMUIOVector *qiov; /* user I/O vector */
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33 | d9d33417 | Stefan Hajnoczi | QEMUIOVector raw_qiov; /* cloned I/O vector for raw file */
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34 | d9d33417 | Stefan Hajnoczi | void *buf; /* buffer for raw file I/O */ |
35 | d9d33417 | Stefan Hajnoczi | |
36 | d9d33417 | Stefan Hajnoczi | void (*verify)(BlkverifyAIOCB *acb);
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37 | d9d33417 | Stefan Hajnoczi | }; |
38 | d9d33417 | Stefan Hajnoczi | |
39 | d9d33417 | Stefan Hajnoczi | static void blkverify_aio_cancel(BlockDriverAIOCB *blockacb) |
40 | d9d33417 | Stefan Hajnoczi | { |
41 | d9d33417 | Stefan Hajnoczi | BlkverifyAIOCB *acb = (BlkverifyAIOCB *)blockacb; |
42 | d9d33417 | Stefan Hajnoczi | bool finished = false; |
43 | d9d33417 | Stefan Hajnoczi | |
44 | d9d33417 | Stefan Hajnoczi | /* Wait until request completes, invokes its callback, and frees itself */
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45 | d9d33417 | Stefan Hajnoczi | acb->finished = &finished; |
46 | d9d33417 | Stefan Hajnoczi | while (!finished) {
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47 | d9d33417 | Stefan Hajnoczi | qemu_aio_wait(); |
48 | d9d33417 | Stefan Hajnoczi | } |
49 | d9d33417 | Stefan Hajnoczi | } |
50 | d9d33417 | Stefan Hajnoczi | |
51 | d7331bed | Stefan Hajnoczi | static const AIOCBInfo blkverify_aiocb_info = { |
52 | d9d33417 | Stefan Hajnoczi | .aiocb_size = sizeof(BlkverifyAIOCB),
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53 | d9d33417 | Stefan Hajnoczi | .cancel = blkverify_aio_cancel, |
54 | d9d33417 | Stefan Hajnoczi | }; |
55 | d9d33417 | Stefan Hajnoczi | |
56 | a77cffe7 | Stefan Weil | static void GCC_FMT_ATTR(2, 3) blkverify_err(BlkverifyAIOCB *acb, |
57 | a77cffe7 | Stefan Weil | const char *fmt, ...) |
58 | d9d33417 | Stefan Hajnoczi | { |
59 | d9d33417 | Stefan Hajnoczi | va_list ap; |
60 | d9d33417 | Stefan Hajnoczi | |
61 | d9d33417 | Stefan Hajnoczi | va_start(ap, fmt); |
62 | 687db4ed | Anthony Liguori | fprintf(stderr, "blkverify: %s sector_num=%" PRId64 " nb_sectors=%d ", |
63 | d9d33417 | Stefan Hajnoczi | acb->is_write ? "write" : "read", acb->sector_num, |
64 | d9d33417 | Stefan Hajnoczi | acb->nb_sectors); |
65 | d9d33417 | Stefan Hajnoczi | vfprintf(stderr, fmt, ap); |
66 | d9d33417 | Stefan Hajnoczi | fprintf(stderr, "\n");
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67 | d9d33417 | Stefan Hajnoczi | va_end(ap); |
68 | d9d33417 | Stefan Hajnoczi | exit(1);
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69 | d9d33417 | Stefan Hajnoczi | } |
70 | d9d33417 | Stefan Hajnoczi | |
71 | d9d33417 | Stefan Hajnoczi | /* Valid blkverify filenames look like blkverify:path/to/raw_image:path/to/image */
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72 | d9d33417 | Stefan Hajnoczi | static int blkverify_open(BlockDriverState *bs, const char *filename, int flags) |
73 | d9d33417 | Stefan Hajnoczi | { |
74 | d9d33417 | Stefan Hajnoczi | BDRVBlkverifyState *s = bs->opaque; |
75 | d9d33417 | Stefan Hajnoczi | int ret;
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76 | d9d33417 | Stefan Hajnoczi | char *raw, *c;
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77 | d9d33417 | Stefan Hajnoczi | |
78 | d9d33417 | Stefan Hajnoczi | /* Parse the blkverify: prefix */
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79 | d9d33417 | Stefan Hajnoczi | if (strncmp(filename, "blkverify:", strlen("blkverify:"))) { |
80 | d9d33417 | Stefan Hajnoczi | return -EINVAL;
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81 | d9d33417 | Stefan Hajnoczi | } |
82 | d9d33417 | Stefan Hajnoczi | filename += strlen("blkverify:");
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83 | d9d33417 | Stefan Hajnoczi | |
84 | d9d33417 | Stefan Hajnoczi | /* Parse the raw image filename */
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85 | d9d33417 | Stefan Hajnoczi | c = strchr(filename, ':');
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86 | d9d33417 | Stefan Hajnoczi | if (c == NULL) { |
87 | d9d33417 | Stefan Hajnoczi | return -EINVAL;
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88 | d9d33417 | Stefan Hajnoczi | } |
89 | d9d33417 | Stefan Hajnoczi | |
90 | 031380d8 | Stefan Hajnoczi | raw = g_strdup(filename); |
91 | d9d33417 | Stefan Hajnoczi | raw[c - filename] = '\0';
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92 | d9d33417 | Stefan Hajnoczi | ret = bdrv_file_open(&bs->file, raw, flags); |
93 | 031380d8 | Stefan Hajnoczi | g_free(raw); |
94 | d9d33417 | Stefan Hajnoczi | if (ret < 0) { |
95 | d9d33417 | Stefan Hajnoczi | return ret;
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96 | d9d33417 | Stefan Hajnoczi | } |
97 | d9d33417 | Stefan Hajnoczi | filename = c + 1;
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98 | d9d33417 | Stefan Hajnoczi | |
99 | d9d33417 | Stefan Hajnoczi | /* Open the test file */
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100 | d9d33417 | Stefan Hajnoczi | s->test_file = bdrv_new("");
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101 | d9d33417 | Stefan Hajnoczi | ret = bdrv_open(s->test_file, filename, flags, NULL);
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102 | d9d33417 | Stefan Hajnoczi | if (ret < 0) { |
103 | d9d33417 | Stefan Hajnoczi | bdrv_delete(s->test_file); |
104 | d9d33417 | Stefan Hajnoczi | s->test_file = NULL;
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105 | d9d33417 | Stefan Hajnoczi | return ret;
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106 | d9d33417 | Stefan Hajnoczi | } |
107 | d9d33417 | Stefan Hajnoczi | |
108 | d9d33417 | Stefan Hajnoczi | return 0; |
109 | d9d33417 | Stefan Hajnoczi | } |
110 | d9d33417 | Stefan Hajnoczi | |
111 | d9d33417 | Stefan Hajnoczi | static void blkverify_close(BlockDriverState *bs) |
112 | d9d33417 | Stefan Hajnoczi | { |
113 | d9d33417 | Stefan Hajnoczi | BDRVBlkverifyState *s = bs->opaque; |
114 | d9d33417 | Stefan Hajnoczi | |
115 | d9d33417 | Stefan Hajnoczi | bdrv_delete(s->test_file); |
116 | d9d33417 | Stefan Hajnoczi | s->test_file = NULL;
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117 | d9d33417 | Stefan Hajnoczi | } |
118 | d9d33417 | Stefan Hajnoczi | |
119 | d9d33417 | Stefan Hajnoczi | static int64_t blkverify_getlength(BlockDriverState *bs)
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120 | d9d33417 | Stefan Hajnoczi | { |
121 | d9d33417 | Stefan Hajnoczi | BDRVBlkverifyState *s = bs->opaque; |
122 | d9d33417 | Stefan Hajnoczi | |
123 | d9d33417 | Stefan Hajnoczi | return bdrv_getlength(s->test_file);
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124 | d9d33417 | Stefan Hajnoczi | } |
125 | d9d33417 | Stefan Hajnoczi | |
126 | d9d33417 | Stefan Hajnoczi | /**
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127 | d9d33417 | Stefan Hajnoczi | * Check that I/O vector contents are identical
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128 | d9d33417 | Stefan Hajnoczi | *
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129 | d9d33417 | Stefan Hajnoczi | * @a: I/O vector
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130 | d9d33417 | Stefan Hajnoczi | * @b: I/O vector
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131 | d9d33417 | Stefan Hajnoczi | * @ret: Offset to first mismatching byte or -1 if match
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132 | d9d33417 | Stefan Hajnoczi | */
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133 | d9d33417 | Stefan Hajnoczi | static ssize_t blkverify_iovec_compare(QEMUIOVector *a, QEMUIOVector *b)
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134 | d9d33417 | Stefan Hajnoczi | { |
135 | d9d33417 | Stefan Hajnoczi | int i;
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136 | d9d33417 | Stefan Hajnoczi | ssize_t offset = 0;
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137 | d9d33417 | Stefan Hajnoczi | |
138 | d9d33417 | Stefan Hajnoczi | assert(a->niov == b->niov); |
139 | d9d33417 | Stefan Hajnoczi | for (i = 0; i < a->niov; i++) { |
140 | d9d33417 | Stefan Hajnoczi | size_t len = 0;
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141 | d9d33417 | Stefan Hajnoczi | uint8_t *p = (uint8_t *)a->iov[i].iov_base; |
142 | d9d33417 | Stefan Hajnoczi | uint8_t *q = (uint8_t *)b->iov[i].iov_base; |
143 | d9d33417 | Stefan Hajnoczi | |
144 | d9d33417 | Stefan Hajnoczi | assert(a->iov[i].iov_len == b->iov[i].iov_len); |
145 | d9d33417 | Stefan Hajnoczi | while (len < a->iov[i].iov_len && *p++ == *q++) {
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146 | d9d33417 | Stefan Hajnoczi | len++; |
147 | d9d33417 | Stefan Hajnoczi | } |
148 | d9d33417 | Stefan Hajnoczi | |
149 | d9d33417 | Stefan Hajnoczi | offset += len; |
150 | d9d33417 | Stefan Hajnoczi | |
151 | d9d33417 | Stefan Hajnoczi | if (len != a->iov[i].iov_len) {
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152 | d9d33417 | Stefan Hajnoczi | return offset;
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153 | d9d33417 | Stefan Hajnoczi | } |
154 | d9d33417 | Stefan Hajnoczi | } |
155 | d9d33417 | Stefan Hajnoczi | return -1; |
156 | d9d33417 | Stefan Hajnoczi | } |
157 | d9d33417 | Stefan Hajnoczi | |
158 | d9d33417 | Stefan Hajnoczi | typedef struct { |
159 | d9d33417 | Stefan Hajnoczi | int src_index;
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160 | d9d33417 | Stefan Hajnoczi | struct iovec *src_iov;
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161 | d9d33417 | Stefan Hajnoczi | void *dest_base;
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162 | d9d33417 | Stefan Hajnoczi | } IOVectorSortElem; |
163 | d9d33417 | Stefan Hajnoczi | |
164 | d9d33417 | Stefan Hajnoczi | static int sortelem_cmp_src_base(const void *a, const void *b) |
165 | d9d33417 | Stefan Hajnoczi | { |
166 | d9d33417 | Stefan Hajnoczi | const IOVectorSortElem *elem_a = a;
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167 | d9d33417 | Stefan Hajnoczi | const IOVectorSortElem *elem_b = b;
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168 | d9d33417 | Stefan Hajnoczi | |
169 | d9d33417 | Stefan Hajnoczi | /* Don't overflow */
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170 | d9d33417 | Stefan Hajnoczi | if (elem_a->src_iov->iov_base < elem_b->src_iov->iov_base) {
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171 | d9d33417 | Stefan Hajnoczi | return -1; |
172 | d9d33417 | Stefan Hajnoczi | } else if (elem_a->src_iov->iov_base > elem_b->src_iov->iov_base) { |
173 | d9d33417 | Stefan Hajnoczi | return 1; |
174 | d9d33417 | Stefan Hajnoczi | } else {
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175 | d9d33417 | Stefan Hajnoczi | return 0; |
176 | d9d33417 | Stefan Hajnoczi | } |
177 | d9d33417 | Stefan Hajnoczi | } |
178 | d9d33417 | Stefan Hajnoczi | |
179 | d9d33417 | Stefan Hajnoczi | static int sortelem_cmp_src_index(const void *a, const void *b) |
180 | d9d33417 | Stefan Hajnoczi | { |
181 | d9d33417 | Stefan Hajnoczi | const IOVectorSortElem *elem_a = a;
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182 | d9d33417 | Stefan Hajnoczi | const IOVectorSortElem *elem_b = b;
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183 | d9d33417 | Stefan Hajnoczi | |
184 | d9d33417 | Stefan Hajnoczi | return elem_a->src_index - elem_b->src_index;
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185 | d9d33417 | Stefan Hajnoczi | } |
186 | d9d33417 | Stefan Hajnoczi | |
187 | d9d33417 | Stefan Hajnoczi | /**
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188 | d9d33417 | Stefan Hajnoczi | * Copy contents of I/O vector
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189 | d9d33417 | Stefan Hajnoczi | *
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190 | d9d33417 | Stefan Hajnoczi | * The relative relationships of overlapping iovecs are preserved. This is
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191 | d9d33417 | Stefan Hajnoczi | * necessary to ensure identical semantics in the cloned I/O vector.
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192 | d9d33417 | Stefan Hajnoczi | */
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193 | d9d33417 | Stefan Hajnoczi | static void blkverify_iovec_clone(QEMUIOVector *dest, const QEMUIOVector *src, |
194 | d9d33417 | Stefan Hajnoczi | void *buf)
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195 | d9d33417 | Stefan Hajnoczi | { |
196 | d9d33417 | Stefan Hajnoczi | IOVectorSortElem sortelems[src->niov]; |
197 | d9d33417 | Stefan Hajnoczi | void *last_end;
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198 | d9d33417 | Stefan Hajnoczi | int i;
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199 | d9d33417 | Stefan Hajnoczi | |
200 | d9d33417 | Stefan Hajnoczi | /* Sort by source iovecs by base address */
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201 | d9d33417 | Stefan Hajnoczi | for (i = 0; i < src->niov; i++) { |
202 | d9d33417 | Stefan Hajnoczi | sortelems[i].src_index = i; |
203 | d9d33417 | Stefan Hajnoczi | sortelems[i].src_iov = &src->iov[i]; |
204 | d9d33417 | Stefan Hajnoczi | } |
205 | d9d33417 | Stefan Hajnoczi | qsort(sortelems, src->niov, sizeof(sortelems[0]), sortelem_cmp_src_base); |
206 | d9d33417 | Stefan Hajnoczi | |
207 | d9d33417 | Stefan Hajnoczi | /* Allocate buffer space taking into account overlapping iovecs */
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208 | d9d33417 | Stefan Hajnoczi | last_end = NULL;
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209 | d9d33417 | Stefan Hajnoczi | for (i = 0; i < src->niov; i++) { |
210 | d9d33417 | Stefan Hajnoczi | struct iovec *cur = sortelems[i].src_iov;
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211 | d9d33417 | Stefan Hajnoczi | ptrdiff_t rewind = 0;
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212 | d9d33417 | Stefan Hajnoczi | |
213 | d9d33417 | Stefan Hajnoczi | /* Detect overlap */
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214 | d9d33417 | Stefan Hajnoczi | if (last_end && last_end > cur->iov_base) {
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215 | d9d33417 | Stefan Hajnoczi | rewind = last_end - cur->iov_base; |
216 | d9d33417 | Stefan Hajnoczi | } |
217 | d9d33417 | Stefan Hajnoczi | |
218 | d9d33417 | Stefan Hajnoczi | sortelems[i].dest_base = buf - rewind; |
219 | d9d33417 | Stefan Hajnoczi | buf += cur->iov_len - MIN(rewind, cur->iov_len); |
220 | d9d33417 | Stefan Hajnoczi | last_end = MAX(cur->iov_base + cur->iov_len, last_end); |
221 | d9d33417 | Stefan Hajnoczi | } |
222 | d9d33417 | Stefan Hajnoczi | |
223 | d9d33417 | Stefan Hajnoczi | /* Sort by source iovec index and build destination iovec */
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224 | d9d33417 | Stefan Hajnoczi | qsort(sortelems, src->niov, sizeof(sortelems[0]), sortelem_cmp_src_index); |
225 | d9d33417 | Stefan Hajnoczi | for (i = 0; i < src->niov; i++) { |
226 | d9d33417 | Stefan Hajnoczi | qemu_iovec_add(dest, sortelems[i].dest_base, src->iov[i].iov_len); |
227 | d9d33417 | Stefan Hajnoczi | } |
228 | d9d33417 | Stefan Hajnoczi | } |
229 | d9d33417 | Stefan Hajnoczi | |
230 | d9d33417 | Stefan Hajnoczi | static BlkverifyAIOCB *blkverify_aio_get(BlockDriverState *bs, bool is_write, |
231 | d9d33417 | Stefan Hajnoczi | int64_t sector_num, QEMUIOVector *qiov, |
232 | d9d33417 | Stefan Hajnoczi | int nb_sectors,
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233 | d9d33417 | Stefan Hajnoczi | BlockDriverCompletionFunc *cb, |
234 | d9d33417 | Stefan Hajnoczi | void *opaque)
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235 | d9d33417 | Stefan Hajnoczi | { |
236 | d7331bed | Stefan Hajnoczi | BlkverifyAIOCB *acb = qemu_aio_get(&blkverify_aiocb_info, bs, cb, opaque); |
237 | d9d33417 | Stefan Hajnoczi | |
238 | d9d33417 | Stefan Hajnoczi | acb->bh = NULL;
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239 | d9d33417 | Stefan Hajnoczi | acb->is_write = is_write; |
240 | d9d33417 | Stefan Hajnoczi | acb->sector_num = sector_num; |
241 | d9d33417 | Stefan Hajnoczi | acb->nb_sectors = nb_sectors; |
242 | d9d33417 | Stefan Hajnoczi | acb->ret = -EINPROGRESS; |
243 | d9d33417 | Stefan Hajnoczi | acb->done = 0;
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244 | d9d33417 | Stefan Hajnoczi | acb->qiov = qiov; |
245 | d9d33417 | Stefan Hajnoczi | acb->buf = NULL;
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246 | d9d33417 | Stefan Hajnoczi | acb->verify = NULL;
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247 | d9d33417 | Stefan Hajnoczi | acb->finished = NULL;
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248 | d9d33417 | Stefan Hajnoczi | return acb;
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249 | d9d33417 | Stefan Hajnoczi | } |
250 | d9d33417 | Stefan Hajnoczi | |
251 | d9d33417 | Stefan Hajnoczi | static void blkverify_aio_bh(void *opaque) |
252 | d9d33417 | Stefan Hajnoczi | { |
253 | d9d33417 | Stefan Hajnoczi | BlkverifyAIOCB *acb = opaque; |
254 | d9d33417 | Stefan Hajnoczi | |
255 | d9d33417 | Stefan Hajnoczi | qemu_bh_delete(acb->bh); |
256 | d9d33417 | Stefan Hajnoczi | if (acb->buf) {
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257 | d9d33417 | Stefan Hajnoczi | qemu_iovec_destroy(&acb->raw_qiov); |
258 | d9d33417 | Stefan Hajnoczi | qemu_vfree(acb->buf); |
259 | d9d33417 | Stefan Hajnoczi | } |
260 | d9d33417 | Stefan Hajnoczi | acb->common.cb(acb->common.opaque, acb->ret); |
261 | d9d33417 | Stefan Hajnoczi | if (acb->finished) {
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262 | d9d33417 | Stefan Hajnoczi | *acb->finished = true;
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263 | d9d33417 | Stefan Hajnoczi | } |
264 | d9d33417 | Stefan Hajnoczi | qemu_aio_release(acb); |
265 | d9d33417 | Stefan Hajnoczi | } |
266 | d9d33417 | Stefan Hajnoczi | |
267 | d9d33417 | Stefan Hajnoczi | static void blkverify_aio_cb(void *opaque, int ret) |
268 | d9d33417 | Stefan Hajnoczi | { |
269 | d9d33417 | Stefan Hajnoczi | BlkverifyAIOCB *acb = opaque; |
270 | d9d33417 | Stefan Hajnoczi | |
271 | d9d33417 | Stefan Hajnoczi | switch (++acb->done) {
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272 | d9d33417 | Stefan Hajnoczi | case 1: |
273 | d9d33417 | Stefan Hajnoczi | acb->ret = ret; |
274 | d9d33417 | Stefan Hajnoczi | break;
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275 | d9d33417 | Stefan Hajnoczi | |
276 | d9d33417 | Stefan Hajnoczi | case 2: |
277 | d9d33417 | Stefan Hajnoczi | if (acb->ret != ret) {
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278 | d9d33417 | Stefan Hajnoczi | blkverify_err(acb, "return value mismatch %d != %d", acb->ret, ret);
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279 | d9d33417 | Stefan Hajnoczi | } |
280 | d9d33417 | Stefan Hajnoczi | |
281 | d9d33417 | Stefan Hajnoczi | if (acb->verify) {
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282 | d9d33417 | Stefan Hajnoczi | acb->verify(acb); |
283 | d9d33417 | Stefan Hajnoczi | } |
284 | d9d33417 | Stefan Hajnoczi | |
285 | d9d33417 | Stefan Hajnoczi | acb->bh = qemu_bh_new(blkverify_aio_bh, acb); |
286 | d9d33417 | Stefan Hajnoczi | qemu_bh_schedule(acb->bh); |
287 | d9d33417 | Stefan Hajnoczi | break;
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288 | d9d33417 | Stefan Hajnoczi | } |
289 | d9d33417 | Stefan Hajnoczi | } |
290 | d9d33417 | Stefan Hajnoczi | |
291 | d9d33417 | Stefan Hajnoczi | static void blkverify_verify_readv(BlkverifyAIOCB *acb) |
292 | d9d33417 | Stefan Hajnoczi | { |
293 | d9d33417 | Stefan Hajnoczi | ssize_t offset = blkverify_iovec_compare(acb->qiov, &acb->raw_qiov); |
294 | d9d33417 | Stefan Hajnoczi | if (offset != -1) { |
295 | a3133586 | Blue Swirl | blkverify_err(acb, "contents mismatch in sector %" PRId64,
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296 | a3133586 | Blue Swirl | acb->sector_num + (int64_t)(offset / BDRV_SECTOR_SIZE)); |
297 | d9d33417 | Stefan Hajnoczi | } |
298 | d9d33417 | Stefan Hajnoczi | } |
299 | d9d33417 | Stefan Hajnoczi | |
300 | d9d33417 | Stefan Hajnoczi | static BlockDriverAIOCB *blkverify_aio_readv(BlockDriverState *bs,
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301 | d9d33417 | Stefan Hajnoczi | int64_t sector_num, QEMUIOVector *qiov, int nb_sectors,
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302 | d9d33417 | Stefan Hajnoczi | BlockDriverCompletionFunc *cb, void *opaque)
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303 | d9d33417 | Stefan Hajnoczi | { |
304 | d9d33417 | Stefan Hajnoczi | BDRVBlkverifyState *s = bs->opaque; |
305 | d9d33417 | Stefan Hajnoczi | BlkverifyAIOCB *acb = blkverify_aio_get(bs, false, sector_num, qiov,
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306 | d9d33417 | Stefan Hajnoczi | nb_sectors, cb, opaque); |
307 | d9d33417 | Stefan Hajnoczi | |
308 | d9d33417 | Stefan Hajnoczi | acb->verify = blkverify_verify_readv; |
309 | d9d33417 | Stefan Hajnoczi | acb->buf = qemu_blockalign(bs->file, qiov->size); |
310 | d9d33417 | Stefan Hajnoczi | qemu_iovec_init(&acb->raw_qiov, acb->qiov->niov); |
311 | d9d33417 | Stefan Hajnoczi | blkverify_iovec_clone(&acb->raw_qiov, qiov, acb->buf); |
312 | d9d33417 | Stefan Hajnoczi | |
313 | ad54ae80 | Paolo Bonzini | bdrv_aio_readv(s->test_file, sector_num, qiov, nb_sectors, |
314 | ad54ae80 | Paolo Bonzini | blkverify_aio_cb, acb); |
315 | ad54ae80 | Paolo Bonzini | bdrv_aio_readv(bs->file, sector_num, &acb->raw_qiov, nb_sectors, |
316 | ad54ae80 | Paolo Bonzini | blkverify_aio_cb, acb); |
317 | d9d33417 | Stefan Hajnoczi | return &acb->common;
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318 | d9d33417 | Stefan Hajnoczi | } |
319 | d9d33417 | Stefan Hajnoczi | |
320 | d9d33417 | Stefan Hajnoczi | static BlockDriverAIOCB *blkverify_aio_writev(BlockDriverState *bs,
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321 | d9d33417 | Stefan Hajnoczi | int64_t sector_num, QEMUIOVector *qiov, int nb_sectors,
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322 | d9d33417 | Stefan Hajnoczi | BlockDriverCompletionFunc *cb, void *opaque)
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323 | d9d33417 | Stefan Hajnoczi | { |
324 | d9d33417 | Stefan Hajnoczi | BDRVBlkverifyState *s = bs->opaque; |
325 | d9d33417 | Stefan Hajnoczi | BlkverifyAIOCB *acb = blkverify_aio_get(bs, true, sector_num, qiov,
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326 | d9d33417 | Stefan Hajnoczi | nb_sectors, cb, opaque); |
327 | d9d33417 | Stefan Hajnoczi | |
328 | ad54ae80 | Paolo Bonzini | bdrv_aio_writev(s->test_file, sector_num, qiov, nb_sectors, |
329 | ad54ae80 | Paolo Bonzini | blkverify_aio_cb, acb); |
330 | ad54ae80 | Paolo Bonzini | bdrv_aio_writev(bs->file, sector_num, qiov, nb_sectors, |
331 | ad54ae80 | Paolo Bonzini | blkverify_aio_cb, acb); |
332 | d9d33417 | Stefan Hajnoczi | return &acb->common;
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333 | d9d33417 | Stefan Hajnoczi | } |
334 | d9d33417 | Stefan Hajnoczi | |
335 | d9d33417 | Stefan Hajnoczi | static BlockDriverAIOCB *blkverify_aio_flush(BlockDriverState *bs,
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336 | d9d33417 | Stefan Hajnoczi | BlockDriverCompletionFunc *cb, |
337 | d9d33417 | Stefan Hajnoczi | void *opaque)
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338 | d9d33417 | Stefan Hajnoczi | { |
339 | d9d33417 | Stefan Hajnoczi | BDRVBlkverifyState *s = bs->opaque; |
340 | d9d33417 | Stefan Hajnoczi | |
341 | d9d33417 | Stefan Hajnoczi | /* Only flush test file, the raw file is not important */
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342 | d9d33417 | Stefan Hajnoczi | return bdrv_aio_flush(s->test_file, cb, opaque);
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343 | d9d33417 | Stefan Hajnoczi | } |
344 | d9d33417 | Stefan Hajnoczi | |
345 | d9d33417 | Stefan Hajnoczi | static BlockDriver bdrv_blkverify = {
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346 | d9d33417 | Stefan Hajnoczi | .format_name = "blkverify",
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347 | d9d33417 | Stefan Hajnoczi | .protocol_name = "blkverify",
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348 | d9d33417 | Stefan Hajnoczi | |
349 | d9d33417 | Stefan Hajnoczi | .instance_size = sizeof(BDRVBlkverifyState),
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350 | d9d33417 | Stefan Hajnoczi | |
351 | d9d33417 | Stefan Hajnoczi | .bdrv_getlength = blkverify_getlength, |
352 | d9d33417 | Stefan Hajnoczi | |
353 | d9d33417 | Stefan Hajnoczi | .bdrv_file_open = blkverify_open, |
354 | d9d33417 | Stefan Hajnoczi | .bdrv_close = blkverify_close, |
355 | d9d33417 | Stefan Hajnoczi | |
356 | d9d33417 | Stefan Hajnoczi | .bdrv_aio_readv = blkverify_aio_readv, |
357 | d9d33417 | Stefan Hajnoczi | .bdrv_aio_writev = blkverify_aio_writev, |
358 | d9d33417 | Stefan Hajnoczi | .bdrv_aio_flush = blkverify_aio_flush, |
359 | d9d33417 | Stefan Hajnoczi | }; |
360 | d9d33417 | Stefan Hajnoczi | |
361 | d9d33417 | Stefan Hajnoczi | static void bdrv_blkverify_init(void) |
362 | d9d33417 | Stefan Hajnoczi | { |
363 | d9d33417 | Stefan Hajnoczi | bdrv_register(&bdrv_blkverify); |
364 | d9d33417 | Stefan Hajnoczi | } |
365 | d9d33417 | Stefan Hajnoczi | |
366 | d9d33417 | Stefan Hajnoczi | block_init(bdrv_blkverify_init); |