Commit | Line | Data |
---|---|---|
e29d1b70 JA |
1 | /* |
2 | * IO verification helpers | |
3 | */ | |
4 | #include <unistd.h> | |
5 | #include <fcntl.h> | |
6 | #include <string.h> | |
97af62ce | 7 | #include <assert.h> |
e29d1b70 JA |
8 | |
9 | #include "fio.h" | |
e29d1b70 JA |
10 | |
11 | static void fill_random_bytes(struct thread_data *td, | |
12 | unsigned char *p, unsigned int len) | |
13 | { | |
14 | unsigned int todo; | |
4c5946c6 | 15 | int r; |
e29d1b70 JA |
16 | |
17 | while (len) { | |
4c5946c6 | 18 | r = os_random_long(&td->verify_state); |
e29d1b70 JA |
19 | |
20 | /* | |
21 | * lrand48_r seems to be broken and only fill the bottom | |
22 | * 32-bits, even on 64-bit archs with 64-bit longs | |
23 | */ | |
24 | todo = sizeof(r); | |
25 | if (todo > len) | |
26 | todo = len; | |
27 | ||
28 | memcpy(p, &r, todo); | |
29 | ||
30 | len -= todo; | |
31 | p += todo; | |
32 | } | |
33 | } | |
34 | ||
546a9142 SL |
35 | void memswp(void* buf1, void* buf2, unsigned int len) |
36 | { | |
37 | struct verify_header swap; | |
38 | memcpy(&swap, buf1, len); | |
39 | memcpy(buf1, buf2, len); | |
40 | memcpy(buf2, &swap, len); | |
41 | } | |
42 | ||
e29d1b70 JA |
43 | static void hexdump(void *buffer, int len) |
44 | { | |
45 | unsigned char *p = buffer; | |
46 | int i; | |
47 | ||
48 | for (i = 0; i < len; i++) | |
6d86144d JA |
49 | log_info("%02x", p[i]); |
50 | log_info("\n"); | |
e29d1b70 JA |
51 | } |
52 | ||
3f9f4e26 SL |
53 | static int verify_io_u_crc7(struct verify_header *hdr, struct io_u *io_u, |
54 | unsigned char header_num) | |
1e154bdb JA |
55 | { |
56 | unsigned char *p = io_u->buf; | |
57 | unsigned char c; | |
58 | ||
3f9f4e26 | 59 | p += header_num * hdr->len + sizeof(*hdr); |
1e154bdb JA |
60 | c = crc7(p, hdr->len - sizeof(*hdr)); |
61 | ||
62 | if (c != hdr->crc7) { | |
3f9f4e26 SL |
63 | log_err("crc7: verify failed at %llu/%u\n", |
64 | io_u->offset + header_num * hdr->len, | |
65 | hdr->len); | |
1e154bdb JA |
66 | log_err("crc7: wanted %x, got %x\n", hdr->crc7, c); |
67 | return 1; | |
68 | } | |
69 | ||
70 | return 0; | |
71 | } | |
72 | ||
3f9f4e26 SL |
73 | static int verify_io_u_crc16(struct verify_header *hdr, struct io_u *io_u, |
74 | unsigned int header_num) | |
969f7ed3 JA |
75 | { |
76 | unsigned char *p = io_u->buf; | |
77 | unsigned short c; | |
78 | ||
3f9f4e26 | 79 | p += header_num * hdr->len + sizeof(*hdr); |
969f7ed3 JA |
80 | c = crc16(p, hdr->len - sizeof(*hdr)); |
81 | ||
82 | if (c != hdr->crc16) { | |
3f9f4e26 SL |
83 | log_err("crc16: verify failed at %llu/%u\n", |
84 | io_u->offset + header_num * hdr->len, | |
85 | hdr->len); | |
1f24ea44 | 86 | log_err("crc16: wanted %x, got %x\n", hdr->crc16, c); |
969f7ed3 JA |
87 | return 1; |
88 | } | |
89 | ||
90 | return 0; | |
91 | } | |
92 | ||
3f9f4e26 SL |
93 | static int verify_io_u_crc64(struct verify_header *hdr, struct io_u *io_u, |
94 | unsigned int header_num) | |
d77a7af3 | 95 | { |
3f9f4e26 | 96 | unsigned char *p = io_u->buf; |
d77a7af3 JA |
97 | unsigned long long c; |
98 | ||
3f9f4e26 | 99 | p += header_num * hdr->len + sizeof(*hdr); |
d77a7af3 JA |
100 | c = crc64(p, hdr->len - sizeof(*hdr)); |
101 | ||
102 | if (c != hdr->crc64) { | |
3f9f4e26 SL |
103 | log_err("crc64: verify failed at %llu/%u\n", |
104 | io_u->offset + header_num * hdr->len, | |
105 | hdr->len); | |
d77a7af3 JA |
106 | log_err("crc64: wanted %llx, got %llx\n", hdr->crc64, c); |
107 | return 1; | |
108 | } | |
109 | ||
110 | return 0; | |
111 | } | |
112 | ||
3f9f4e26 SL |
113 | static int verify_io_u_crc32(struct verify_header *hdr, struct io_u *io_u, |
114 | unsigned int header_num) | |
e29d1b70 | 115 | { |
969f7ed3 | 116 | unsigned char *p = io_u->buf; |
e29d1b70 JA |
117 | unsigned long c; |
118 | ||
3f9f4e26 | 119 | p += header_num * hdr->len + sizeof(*hdr); |
e29d1b70 JA |
120 | c = crc32(p, hdr->len - sizeof(*hdr)); |
121 | ||
122 | if (c != hdr->crc32) { | |
3f9f4e26 SL |
123 | log_err("crc32: verify failed at %llu/%u\n", |
124 | io_u->offset + header_num * hdr->len, | |
125 | hdr->len); | |
e29d1b70 JA |
126 | log_err("crc32: wanted %lx, got %lx\n", hdr->crc32, c); |
127 | return 1; | |
128 | } | |
129 | ||
130 | return 0; | |
131 | } | |
132 | ||
3f9f4e26 SL |
133 | static int verify_io_u_md5(struct verify_header *hdr, struct io_u *io_u, |
134 | unsigned int header_num) | |
e29d1b70 | 135 | { |
3f9f4e26 | 136 | unsigned char *p = io_u->buf; |
8c432325 JA |
137 | uint32_t hash[MD5_HASH_WORDS]; |
138 | struct md5_ctx md5_ctx = { | |
139 | .hash = hash, | |
140 | }; | |
e29d1b70 | 141 | |
3f9f4e26 | 142 | p += header_num * hdr->len + sizeof(*hdr); |
e29d1b70 JA |
143 | md5_update(&md5_ctx, p, hdr->len - sizeof(*hdr)); |
144 | ||
3f9f4e26 SL |
145 | if (memcmp(hdr->md5_digest, md5_ctx.hash, sizeof(md5_ctx.hash))) { |
146 | log_err("md5: verify failed at %llu/%u\n", | |
147 | io_u->offset + header_num * hdr->len, | |
148 | hdr->len); | |
e29d1b70 | 149 | hexdump(hdr->md5_digest, sizeof(hdr->md5_digest)); |
8c432325 | 150 | hexdump(md5_ctx.hash, sizeof(hash)); |
e29d1b70 JA |
151 | return 1; |
152 | } | |
153 | ||
154 | return 0; | |
155 | } | |
156 | ||
36690c9b | 157 | int verify_io_u(struct thread_data *td, struct io_u *io_u) |
e29d1b70 | 158 | { |
3f9f4e26 SL |
159 | unsigned char *p = (unsigned char*) io_u->buf; |
160 | struct verify_header *hdr; | |
161 | unsigned int hdr_inc, hdr_num = 0; | |
e29d1b70 JA |
162 | int ret; |
163 | ||
1dcc0498 | 164 | if (td->o.verify == VERIFY_NULL || io_u->ddir != DDIR_READ) |
36690c9b JA |
165 | return 0; |
166 | ||
3f9f4e26 SL |
167 | hdr_inc = io_u->buflen; |
168 | if (td->o.header_interval) | |
169 | hdr_inc = td->o.header_interval; | |
e29d1b70 | 170 | |
3f9f4e26 | 171 | for (; p < (unsigned char*) io_u->buf + io_u->buflen; p += hdr_inc) { |
546a9142 SL |
172 | if (td->o.header_offset) |
173 | memswp(p, &p[td->o.header_offset], sizeof(*hdr)); | |
174 | ||
3f9f4e26 | 175 | hdr = (struct verify_header*) p; |
e29d1b70 | 176 | |
3f9f4e26 SL |
177 | if (hdr->fio_magic != FIO_HDR_MAGIC) { |
178 | log_err("Bad verify header %x\n", hdr->fio_magic); | |
179 | return EIO; | |
180 | } | |
181 | ||
182 | switch (hdr->verify_type) { | |
183 | case VERIFY_MD5: | |
184 | ret = verify_io_u_md5(hdr, io_u, hdr_num); | |
185 | break; | |
186 | case VERIFY_CRC64: | |
187 | ret = verify_io_u_crc64(hdr, io_u, hdr_num); | |
188 | break; | |
189 | case VERIFY_CRC32: | |
190 | ret = verify_io_u_crc32(hdr, io_u, hdr_num); | |
191 | break; | |
192 | case VERIFY_CRC16: | |
193 | ret = verify_io_u_crc16(hdr, io_u, hdr_num); | |
194 | break; | |
195 | case VERIFY_CRC7: | |
196 | ret = verify_io_u_crc7(hdr, io_u, hdr_num); | |
197 | break; | |
198 | default: | |
199 | log_err("Bad verify type %u\n", hdr->verify_type); | |
200 | ret = 1; | |
201 | } | |
202 | hdr_num++; | |
203 | } | |
a7dfe862 JA |
204 | |
205 | return 0; | |
e29d1b70 JA |
206 | } |
207 | ||
1e154bdb JA |
208 | static void fill_crc7(struct verify_header *hdr, void *p, unsigned int len) |
209 | { | |
210 | hdr->crc7 = crc7(p, len); | |
211 | } | |
212 | ||
969f7ed3 JA |
213 | static void fill_crc16(struct verify_header *hdr, void *p, unsigned int len) |
214 | { | |
215 | hdr->crc16 = crc16(p, len); | |
216 | } | |
217 | ||
e29d1b70 JA |
218 | static void fill_crc32(struct verify_header *hdr, void *p, unsigned int len) |
219 | { | |
220 | hdr->crc32 = crc32(p, len); | |
221 | } | |
222 | ||
d77a7af3 JA |
223 | static void fill_crc64(struct verify_header *hdr, void *p, unsigned int len) |
224 | { | |
225 | hdr->crc64 = crc64(p, len); | |
226 | } | |
227 | ||
e29d1b70 JA |
228 | static void fill_md5(struct verify_header *hdr, void *p, unsigned int len) |
229 | { | |
8c432325 JA |
230 | struct md5_ctx md5_ctx = { |
231 | .hash = (uint32_t *) hdr->md5_digest, | |
232 | }; | |
e29d1b70 | 233 | |
e29d1b70 | 234 | md5_update(&md5_ctx, p, len); |
e29d1b70 JA |
235 | } |
236 | ||
237 | /* | |
238 | * fill body of io_u->buf with random data and add a header with the | |
239 | * crc32 or md5 sum of that data. | |
240 | */ | |
241 | void populate_verify_io_u(struct thread_data *td, struct io_u *io_u) | |
242 | { | |
baefa9be | 243 | struct verify_header *hdr; |
3f9f4e26 | 244 | unsigned char *p = io_u->buf, *data; |
546a9142 | 245 | unsigned int hdr_inc, data_len; |
e29d1b70 | 246 | |
9cc3d150 JA |
247 | if (td->o.verify == VERIFY_NULL) |
248 | return; | |
249 | ||
546a9142 SL |
250 | fill_random_bytes(td, p, io_u->buflen); |
251 | ||
252 | hdr_inc = io_u->buflen; | |
253 | if (td->o.header_interval) | |
254 | hdr_inc = td->o.header_interval; | |
255 | data_len = hdr_inc - sizeof(*hdr); | |
baefa9be | 256 | |
546a9142 | 257 | for (;p < (unsigned char*) io_u->buf + io_u->buflen; p += hdr_inc) { |
3f9f4e26 SL |
258 | hdr = (struct verify_header*) p; |
259 | ||
260 | hdr->fio_magic = FIO_HDR_MAGIC; | |
261 | hdr->verify_type = td->o.verify; | |
546a9142 | 262 | hdr->len = hdr_inc; |
3f9f4e26 SL |
263 | |
264 | data = p + sizeof(*hdr); | |
3f9f4e26 SL |
265 | switch (td->o.verify) { |
266 | case VERIFY_MD5: | |
267 | fill_md5(hdr, data, data_len); | |
268 | break; | |
269 | case VERIFY_CRC64: | |
270 | fill_crc64(hdr, data, data_len); | |
271 | break; | |
272 | case VERIFY_CRC32: | |
273 | fill_crc32(hdr, data, data_len); | |
274 | break; | |
275 | case VERIFY_CRC16: | |
276 | fill_crc16(hdr, data, data_len); | |
277 | break; | |
278 | case VERIFY_CRC7: | |
279 | fill_crc7(hdr, data, data_len); | |
280 | break; | |
281 | default: | |
282 | log_err("fio: bad verify type: %d\n", td->o.verify); | |
283 | assert(0); | |
284 | } | |
546a9142 SL |
285 | if (td->o.header_offset) |
286 | memswp(p, &p[td->o.header_offset], sizeof(*hdr)); | |
e29d1b70 | 287 | } |
e29d1b70 JA |
288 | } |
289 | ||
290 | int get_next_verify(struct thread_data *td, struct io_u *io_u) | |
291 | { | |
8de8f047 | 292 | struct io_piece *ipo = NULL; |
e29d1b70 | 293 | |
d2d7fa53 JA |
294 | /* |
295 | * this io_u is from a requeue, we already filled the offsets | |
296 | */ | |
297 | if (io_u->file) | |
298 | return 0; | |
299 | ||
8de8f047 JA |
300 | if (!RB_EMPTY_ROOT(&td->io_hist_tree)) { |
301 | struct rb_node *n = rb_first(&td->io_hist_tree); | |
e29d1b70 | 302 | |
8de8f047 | 303 | ipo = rb_entry(n, struct io_piece, rb_node); |
4b87898e | 304 | rb_erase(n, &td->io_hist_tree); |
8de8f047 JA |
305 | } else if (!list_empty(&td->io_hist_list)) { |
306 | ipo = list_entry(td->io_hist_list.next, struct io_piece, list); | |
307 | list_del(&ipo->list); | |
308 | } | |
e29d1b70 | 309 | |
8de8f047 | 310 | if (ipo) { |
e29d1b70 JA |
311 | io_u->offset = ipo->offset; |
312 | io_u->buflen = ipo->len; | |
36167d82 | 313 | io_u->file = ipo->file; |
97af62ce JA |
314 | |
315 | if ((io_u->file->flags & FIO_FILE_OPEN) == 0) { | |
316 | int r = td_io_open_file(td, io_u->file); | |
317 | ||
318 | if (r) | |
319 | return 1; | |
320 | } | |
321 | ||
322 | get_file(ipo->file); | |
323 | assert(io_u->file->flags & FIO_FILE_OPEN); | |
e29d1b70 | 324 | io_u->ddir = DDIR_READ; |
36167d82 JA |
325 | io_u->xfer_buf = io_u->buf; |
326 | io_u->xfer_buflen = io_u->buflen; | |
e29d1b70 JA |
327 | free(ipo); |
328 | return 0; | |
329 | } | |
330 | ||
331 | return 1; | |
332 | } |