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