Jens Axboe | e29d1b7 | 2006-10-18 15:43:15 +0200 | [diff] [blame] | 1 | /* |
| 2 | * IO verification helpers |
| 3 | */ |
| 4 | #include <unistd.h> |
| 5 | #include <fcntl.h> |
| 6 | #include <string.h> |
Jens Axboe | 97af62c | 2007-05-22 11:12:13 +0200 | [diff] [blame] | 7 | #include <assert.h> |
Jens Axboe | e29d1b7 | 2006-10-18 15:43:15 +0200 | [diff] [blame] | 8 | |
| 9 | #include "fio.h" |
Jens Axboe | e29d1b7 | 2006-10-18 15:43:15 +0200 | [diff] [blame] | 10 | |
| 11 | static void fill_random_bytes(struct thread_data *td, |
Jens Axboe | 9564610 | 2007-07-28 21:17:50 +0200 | [diff] [blame] | 12 | void *p, unsigned int len) |
Jens Axboe | e29d1b7 | 2006-10-18 15:43:15 +0200 | [diff] [blame] | 13 | { |
| 14 | unsigned int todo; |
Jens Axboe | 4c5946c | 2007-07-26 11:55:10 +0200 | [diff] [blame] | 15 | int r; |
Jens Axboe | e29d1b7 | 2006-10-18 15:43:15 +0200 | [diff] [blame] | 16 | |
| 17 | while (len) { |
Jens Axboe | 4c5946c | 2007-07-26 11:55:10 +0200 | [diff] [blame] | 18 | r = os_random_long(&td->verify_state); |
Jens Axboe | e29d1b7 | 2006-10-18 15:43:15 +0200 | [diff] [blame] | 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 | |
Shawn Lewis | 546a914 | 2007-07-28 21:11:37 +0200 | [diff] [blame] | 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 | |
Jens Axboe | e29d1b7 | 2006-10-18 15:43:15 +0200 | [diff] [blame] | 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++) |
Jens Axboe | 6d86144 | 2007-03-15 09:22:23 +0100 | [diff] [blame] | 49 | log_info("%02x", p[i]); |
| 50 | log_info("\n"); |
Jens Axboe | e29d1b7 | 2006-10-18 15:43:15 +0200 | [diff] [blame] | 51 | } |
| 52 | |
Jens Axboe | d9f2caf | 2007-07-28 21:22:03 +0200 | [diff] [blame^] | 53 | /* |
| 54 | * Return data area 'header_num' |
| 55 | */ |
| 56 | static inline void *io_u_verify_off(struct verify_header *hdr, |
| 57 | struct io_u *io_u, |
| 58 | unsigned char header_num) |
| 59 | { |
| 60 | return io_u->buf + sizeof(*hdr) + header_num * hdr->len; |
| 61 | } |
| 62 | |
Shawn Lewis | 3f9f4e2 | 2007-07-28 21:10:37 +0200 | [diff] [blame] | 63 | static int verify_io_u_crc7(struct verify_header *hdr, struct io_u *io_u, |
| 64 | unsigned char header_num) |
Jens Axboe | 1e154bd | 2007-07-27 09:52:40 +0200 | [diff] [blame] | 65 | { |
Jens Axboe | d9f2caf | 2007-07-28 21:22:03 +0200 | [diff] [blame^] | 66 | void *p = io_u_verify_off(hdr, io_u, header_num); |
Jens Axboe | 1e154bd | 2007-07-27 09:52:40 +0200 | [diff] [blame] | 67 | unsigned char c; |
| 68 | |
Jens Axboe | 1e154bd | 2007-07-27 09:52:40 +0200 | [diff] [blame] | 69 | c = crc7(p, hdr->len - sizeof(*hdr)); |
| 70 | |
| 71 | if (c != hdr->crc7) { |
Shawn Lewis | 3f9f4e2 | 2007-07-28 21:10:37 +0200 | [diff] [blame] | 72 | log_err("crc7: verify failed at %llu/%u\n", |
| 73 | io_u->offset + header_num * hdr->len, |
| 74 | hdr->len); |
Jens Axboe | 1e154bd | 2007-07-27 09:52:40 +0200 | [diff] [blame] | 75 | log_err("crc7: wanted %x, got %x\n", hdr->crc7, c); |
| 76 | return 1; |
| 77 | } |
| 78 | |
| 79 | return 0; |
| 80 | } |
| 81 | |
Shawn Lewis | 3f9f4e2 | 2007-07-28 21:10:37 +0200 | [diff] [blame] | 82 | static int verify_io_u_crc16(struct verify_header *hdr, struct io_u *io_u, |
| 83 | unsigned int header_num) |
Jens Axboe | 969f7ed | 2007-07-27 09:07:17 +0200 | [diff] [blame] | 84 | { |
Jens Axboe | d9f2caf | 2007-07-28 21:22:03 +0200 | [diff] [blame^] | 85 | void *p = io_u_verify_off(hdr, io_u, header_num); |
Jens Axboe | 969f7ed | 2007-07-27 09:07:17 +0200 | [diff] [blame] | 86 | unsigned short c; |
| 87 | |
Jens Axboe | 969f7ed | 2007-07-27 09:07:17 +0200 | [diff] [blame] | 88 | c = crc16(p, hdr->len - sizeof(*hdr)); |
| 89 | |
| 90 | if (c != hdr->crc16) { |
Shawn Lewis | 3f9f4e2 | 2007-07-28 21:10:37 +0200 | [diff] [blame] | 91 | log_err("crc16: verify failed at %llu/%u\n", |
| 92 | io_u->offset + header_num * hdr->len, |
| 93 | hdr->len); |
Jens Axboe | 1f24ea4 | 2007-07-27 09:53:14 +0200 | [diff] [blame] | 94 | log_err("crc16: wanted %x, got %x\n", hdr->crc16, c); |
Jens Axboe | 969f7ed | 2007-07-27 09:07:17 +0200 | [diff] [blame] | 95 | return 1; |
| 96 | } |
| 97 | |
| 98 | return 0; |
| 99 | } |
| 100 | |
Shawn Lewis | 3f9f4e2 | 2007-07-28 21:10:37 +0200 | [diff] [blame] | 101 | static int verify_io_u_crc64(struct verify_header *hdr, struct io_u *io_u, |
| 102 | unsigned int header_num) |
Jens Axboe | d77a7af | 2007-07-27 15:35:06 +0200 | [diff] [blame] | 103 | { |
Jens Axboe | d9f2caf | 2007-07-28 21:22:03 +0200 | [diff] [blame^] | 104 | void *p = io_u_verify_off(hdr, io_u, header_num); |
Jens Axboe | d77a7af | 2007-07-27 15:35:06 +0200 | [diff] [blame] | 105 | unsigned long long c; |
| 106 | |
| 107 | c = crc64(p, hdr->len - sizeof(*hdr)); |
| 108 | |
| 109 | if (c != hdr->crc64) { |
Shawn Lewis | 3f9f4e2 | 2007-07-28 21:10:37 +0200 | [diff] [blame] | 110 | log_err("crc64: verify failed at %llu/%u\n", |
| 111 | io_u->offset + header_num * hdr->len, |
| 112 | hdr->len); |
Jens Axboe | d77a7af | 2007-07-27 15:35:06 +0200 | [diff] [blame] | 113 | log_err("crc64: wanted %llx, got %llx\n", hdr->crc64, c); |
| 114 | return 1; |
| 115 | } |
| 116 | |
| 117 | return 0; |
| 118 | } |
| 119 | |
Shawn Lewis | 3f9f4e2 | 2007-07-28 21:10:37 +0200 | [diff] [blame] | 120 | static int verify_io_u_crc32(struct verify_header *hdr, struct io_u *io_u, |
| 121 | unsigned int header_num) |
Jens Axboe | e29d1b7 | 2006-10-18 15:43:15 +0200 | [diff] [blame] | 122 | { |
Jens Axboe | d9f2caf | 2007-07-28 21:22:03 +0200 | [diff] [blame^] | 123 | void *p = io_u_verify_off(hdr, io_u, header_num); |
Jens Axboe | e29d1b7 | 2006-10-18 15:43:15 +0200 | [diff] [blame] | 124 | unsigned long c; |
| 125 | |
Jens Axboe | e29d1b7 | 2006-10-18 15:43:15 +0200 | [diff] [blame] | 126 | c = crc32(p, hdr->len - sizeof(*hdr)); |
| 127 | |
| 128 | if (c != hdr->crc32) { |
Shawn Lewis | 3f9f4e2 | 2007-07-28 21:10:37 +0200 | [diff] [blame] | 129 | log_err("crc32: verify failed at %llu/%u\n", |
| 130 | io_u->offset + header_num * hdr->len, |
| 131 | hdr->len); |
Jens Axboe | e29d1b7 | 2006-10-18 15:43:15 +0200 | [diff] [blame] | 132 | log_err("crc32: wanted %lx, got %lx\n", hdr->crc32, c); |
| 133 | return 1; |
| 134 | } |
| 135 | |
| 136 | return 0; |
| 137 | } |
| 138 | |
Shawn Lewis | 3f9f4e2 | 2007-07-28 21:10:37 +0200 | [diff] [blame] | 139 | static int verify_io_u_md5(struct verify_header *hdr, struct io_u *io_u, |
| 140 | unsigned int header_num) |
Jens Axboe | e29d1b7 | 2006-10-18 15:43:15 +0200 | [diff] [blame] | 141 | { |
Jens Axboe | d9f2caf | 2007-07-28 21:22:03 +0200 | [diff] [blame^] | 142 | void *p = io_u_verify_off(hdr, io_u, header_num); |
Jens Axboe | 8c43232 | 2007-07-27 13:16:24 +0200 | [diff] [blame] | 143 | uint32_t hash[MD5_HASH_WORDS]; |
| 144 | struct md5_ctx md5_ctx = { |
| 145 | .hash = hash, |
| 146 | }; |
Jens Axboe | e29d1b7 | 2006-10-18 15:43:15 +0200 | [diff] [blame] | 147 | |
Jens Axboe | e29d1b7 | 2006-10-18 15:43:15 +0200 | [diff] [blame] | 148 | md5_update(&md5_ctx, p, hdr->len - sizeof(*hdr)); |
| 149 | |
Shawn Lewis | 3f9f4e2 | 2007-07-28 21:10:37 +0200 | [diff] [blame] | 150 | if (memcmp(hdr->md5_digest, md5_ctx.hash, sizeof(md5_ctx.hash))) { |
| 151 | log_err("md5: verify failed at %llu/%u\n", |
| 152 | io_u->offset + header_num * hdr->len, |
| 153 | hdr->len); |
Jens Axboe | e29d1b7 | 2006-10-18 15:43:15 +0200 | [diff] [blame] | 154 | hexdump(hdr->md5_digest, sizeof(hdr->md5_digest)); |
Jens Axboe | 8c43232 | 2007-07-27 13:16:24 +0200 | [diff] [blame] | 155 | hexdump(md5_ctx.hash, sizeof(hash)); |
Jens Axboe | e29d1b7 | 2006-10-18 15:43:15 +0200 | [diff] [blame] | 156 | return 1; |
| 157 | } |
| 158 | |
| 159 | return 0; |
| 160 | } |
| 161 | |
Jens Axboe | 36690c9 | 2007-03-26 10:23:34 +0200 | [diff] [blame] | 162 | int verify_io_u(struct thread_data *td, struct io_u *io_u) |
Jens Axboe | e29d1b7 | 2006-10-18 15:43:15 +0200 | [diff] [blame] | 163 | { |
Shawn Lewis | 3f9f4e2 | 2007-07-28 21:10:37 +0200 | [diff] [blame] | 164 | struct verify_header *hdr; |
| 165 | unsigned int hdr_inc, hdr_num = 0; |
Jens Axboe | 9564610 | 2007-07-28 21:17:50 +0200 | [diff] [blame] | 166 | void *p; |
Jens Axboe | e29d1b7 | 2006-10-18 15:43:15 +0200 | [diff] [blame] | 167 | int ret; |
| 168 | |
Shawn Lewis | 1dcc049 | 2007-07-27 08:02:45 +0200 | [diff] [blame] | 169 | if (td->o.verify == VERIFY_NULL || io_u->ddir != DDIR_READ) |
Jens Axboe | 36690c9 | 2007-03-26 10:23:34 +0200 | [diff] [blame] | 170 | return 0; |
| 171 | |
Shawn Lewis | 3f9f4e2 | 2007-07-28 21:10:37 +0200 | [diff] [blame] | 172 | hdr_inc = io_u->buflen; |
| 173 | if (td->o.header_interval) |
| 174 | hdr_inc = td->o.header_interval; |
Jens Axboe | e29d1b7 | 2006-10-18 15:43:15 +0200 | [diff] [blame] | 175 | |
Jens Axboe | 9564610 | 2007-07-28 21:17:50 +0200 | [diff] [blame] | 176 | for (p = io_u->buf; p < io_u->buf + io_u->buflen; p += hdr_inc) { |
Shawn Lewis | 546a914 | 2007-07-28 21:11:37 +0200 | [diff] [blame] | 177 | if (td->o.header_offset) |
Jens Axboe | 9564610 | 2007-07-28 21:17:50 +0200 | [diff] [blame] | 178 | memswp(p, p + td->o.header_offset, sizeof(*hdr)); |
Shawn Lewis | 546a914 | 2007-07-28 21:11:37 +0200 | [diff] [blame] | 179 | |
Jens Axboe | 9564610 | 2007-07-28 21:17:50 +0200 | [diff] [blame] | 180 | hdr = p; |
Jens Axboe | e29d1b7 | 2006-10-18 15:43:15 +0200 | [diff] [blame] | 181 | |
Shawn Lewis | 3f9f4e2 | 2007-07-28 21:10:37 +0200 | [diff] [blame] | 182 | if (hdr->fio_magic != FIO_HDR_MAGIC) { |
| 183 | log_err("Bad verify header %x\n", hdr->fio_magic); |
| 184 | return EIO; |
| 185 | } |
| 186 | |
| 187 | switch (hdr->verify_type) { |
| 188 | case VERIFY_MD5: |
| 189 | ret = verify_io_u_md5(hdr, io_u, hdr_num); |
| 190 | break; |
| 191 | case VERIFY_CRC64: |
| 192 | ret = verify_io_u_crc64(hdr, io_u, hdr_num); |
| 193 | break; |
| 194 | case VERIFY_CRC32: |
| 195 | ret = verify_io_u_crc32(hdr, io_u, hdr_num); |
| 196 | break; |
| 197 | case VERIFY_CRC16: |
| 198 | ret = verify_io_u_crc16(hdr, io_u, hdr_num); |
| 199 | break; |
| 200 | case VERIFY_CRC7: |
| 201 | ret = verify_io_u_crc7(hdr, io_u, hdr_num); |
| 202 | break; |
| 203 | default: |
| 204 | log_err("Bad verify type %u\n", hdr->verify_type); |
| 205 | ret = 1; |
| 206 | } |
| 207 | hdr_num++; |
| 208 | } |
Jens Axboe | a7dfe86 | 2007-03-12 10:05:08 +0100 | [diff] [blame] | 209 | |
| 210 | return 0; |
Jens Axboe | e29d1b7 | 2006-10-18 15:43:15 +0200 | [diff] [blame] | 211 | } |
| 212 | |
Jens Axboe | 1e154bd | 2007-07-27 09:52:40 +0200 | [diff] [blame] | 213 | static void fill_crc7(struct verify_header *hdr, void *p, unsigned int len) |
| 214 | { |
| 215 | hdr->crc7 = crc7(p, len); |
| 216 | } |
| 217 | |
Jens Axboe | 969f7ed | 2007-07-27 09:07:17 +0200 | [diff] [blame] | 218 | static void fill_crc16(struct verify_header *hdr, void *p, unsigned int len) |
| 219 | { |
| 220 | hdr->crc16 = crc16(p, len); |
| 221 | } |
| 222 | |
Jens Axboe | e29d1b7 | 2006-10-18 15:43:15 +0200 | [diff] [blame] | 223 | static void fill_crc32(struct verify_header *hdr, void *p, unsigned int len) |
| 224 | { |
| 225 | hdr->crc32 = crc32(p, len); |
| 226 | } |
| 227 | |
Jens Axboe | d77a7af | 2007-07-27 15:35:06 +0200 | [diff] [blame] | 228 | static void fill_crc64(struct verify_header *hdr, void *p, unsigned int len) |
| 229 | { |
| 230 | hdr->crc64 = crc64(p, len); |
| 231 | } |
| 232 | |
Jens Axboe | e29d1b7 | 2006-10-18 15:43:15 +0200 | [diff] [blame] | 233 | static void fill_md5(struct verify_header *hdr, void *p, unsigned int len) |
| 234 | { |
Jens Axboe | 8c43232 | 2007-07-27 13:16:24 +0200 | [diff] [blame] | 235 | struct md5_ctx md5_ctx = { |
| 236 | .hash = (uint32_t *) hdr->md5_digest, |
| 237 | }; |
Jens Axboe | e29d1b7 | 2006-10-18 15:43:15 +0200 | [diff] [blame] | 238 | |
Jens Axboe | e29d1b7 | 2006-10-18 15:43:15 +0200 | [diff] [blame] | 239 | md5_update(&md5_ctx, p, len); |
Jens Axboe | e29d1b7 | 2006-10-18 15:43:15 +0200 | [diff] [blame] | 240 | } |
| 241 | |
| 242 | /* |
| 243 | * fill body of io_u->buf with random data and add a header with the |
| 244 | * crc32 or md5 sum of that data. |
| 245 | */ |
| 246 | void populate_verify_io_u(struct thread_data *td, struct io_u *io_u) |
| 247 | { |
Jens Axboe | baefa9b | 2007-07-27 12:57:25 +0200 | [diff] [blame] | 248 | struct verify_header *hdr; |
Jens Axboe | 9564610 | 2007-07-28 21:17:50 +0200 | [diff] [blame] | 249 | void *p = io_u->buf, *data; |
Shawn Lewis | 546a914 | 2007-07-28 21:11:37 +0200 | [diff] [blame] | 250 | unsigned int hdr_inc, data_len; |
Jens Axboe | e29d1b7 | 2006-10-18 15:43:15 +0200 | [diff] [blame] | 251 | |
Jens Axboe | 9cc3d15 | 2007-03-26 10:32:30 +0200 | [diff] [blame] | 252 | if (td->o.verify == VERIFY_NULL) |
| 253 | return; |
| 254 | |
Shawn Lewis | 546a914 | 2007-07-28 21:11:37 +0200 | [diff] [blame] | 255 | fill_random_bytes(td, p, io_u->buflen); |
Jens Axboe | baefa9b | 2007-07-27 12:57:25 +0200 | [diff] [blame] | 256 | |
Shawn Lewis | 546a914 | 2007-07-28 21:11:37 +0200 | [diff] [blame] | 257 | hdr_inc = io_u->buflen; |
| 258 | if (td->o.header_interval) |
| 259 | hdr_inc = td->o.header_interval; |
| 260 | data_len = hdr_inc - sizeof(*hdr); |
| 261 | |
Jens Axboe | 9564610 | 2007-07-28 21:17:50 +0200 | [diff] [blame] | 262 | for (;p < io_u->buf + io_u->buflen; p += hdr_inc) { |
| 263 | hdr = p; |
Shawn Lewis | 3f9f4e2 | 2007-07-28 21:10:37 +0200 | [diff] [blame] | 264 | |
| 265 | hdr->fio_magic = FIO_HDR_MAGIC; |
| 266 | hdr->verify_type = td->o.verify; |
Shawn Lewis | 546a914 | 2007-07-28 21:11:37 +0200 | [diff] [blame] | 267 | hdr->len = hdr_inc; |
Shawn Lewis | 3f9f4e2 | 2007-07-28 21:10:37 +0200 | [diff] [blame] | 268 | |
| 269 | data = p + sizeof(*hdr); |
Shawn Lewis | 3f9f4e2 | 2007-07-28 21:10:37 +0200 | [diff] [blame] | 270 | switch (td->o.verify) { |
| 271 | case VERIFY_MD5: |
| 272 | fill_md5(hdr, data, data_len); |
| 273 | break; |
| 274 | case VERIFY_CRC64: |
| 275 | fill_crc64(hdr, data, data_len); |
| 276 | break; |
| 277 | case VERIFY_CRC32: |
| 278 | fill_crc32(hdr, data, data_len); |
| 279 | break; |
| 280 | case VERIFY_CRC16: |
| 281 | fill_crc16(hdr, data, data_len); |
| 282 | break; |
| 283 | case VERIFY_CRC7: |
| 284 | fill_crc7(hdr, data, data_len); |
| 285 | break; |
| 286 | default: |
| 287 | log_err("fio: bad verify type: %d\n", td->o.verify); |
| 288 | assert(0); |
| 289 | } |
Shawn Lewis | 546a914 | 2007-07-28 21:11:37 +0200 | [diff] [blame] | 290 | if (td->o.header_offset) |
Jens Axboe | 9564610 | 2007-07-28 21:17:50 +0200 | [diff] [blame] | 291 | memswp(p, p + td->o.header_offset, sizeof(*hdr)); |
Jens Axboe | e29d1b7 | 2006-10-18 15:43:15 +0200 | [diff] [blame] | 292 | } |
Jens Axboe | e29d1b7 | 2006-10-18 15:43:15 +0200 | [diff] [blame] | 293 | } |
| 294 | |
| 295 | int get_next_verify(struct thread_data *td, struct io_u *io_u) |
| 296 | { |
Jens Axboe | 8de8f04 | 2007-03-27 10:36:12 +0200 | [diff] [blame] | 297 | struct io_piece *ipo = NULL; |
Jens Axboe | e29d1b7 | 2006-10-18 15:43:15 +0200 | [diff] [blame] | 298 | |
Jens Axboe | d2d7fa5 | 2007-02-19 13:21:35 +0100 | [diff] [blame] | 299 | /* |
| 300 | * this io_u is from a requeue, we already filled the offsets |
| 301 | */ |
| 302 | if (io_u->file) |
| 303 | return 0; |
| 304 | |
Jens Axboe | 8de8f04 | 2007-03-27 10:36:12 +0200 | [diff] [blame] | 305 | if (!RB_EMPTY_ROOT(&td->io_hist_tree)) { |
| 306 | struct rb_node *n = rb_first(&td->io_hist_tree); |
| 307 | |
Jens Axboe | 4b87898 | 2007-03-26 09:32:22 +0200 | [diff] [blame] | 308 | ipo = rb_entry(n, struct io_piece, rb_node); |
Jens Axboe | 4b87898 | 2007-03-26 09:32:22 +0200 | [diff] [blame] | 309 | rb_erase(n, &td->io_hist_tree); |
Jens Axboe | 8de8f04 | 2007-03-27 10:36:12 +0200 | [diff] [blame] | 310 | } else if (!list_empty(&td->io_hist_list)) { |
| 311 | ipo = list_entry(td->io_hist_list.next, struct io_piece, list); |
| 312 | list_del(&ipo->list); |
| 313 | } |
Jens Axboe | e29d1b7 | 2006-10-18 15:43:15 +0200 | [diff] [blame] | 314 | |
Jens Axboe | 8de8f04 | 2007-03-27 10:36:12 +0200 | [diff] [blame] | 315 | if (ipo) { |
Jens Axboe | e29d1b7 | 2006-10-18 15:43:15 +0200 | [diff] [blame] | 316 | io_u->offset = ipo->offset; |
| 317 | io_u->buflen = ipo->len; |
Jens Axboe | 36167d8 | 2007-02-18 05:41:31 +0100 | [diff] [blame] | 318 | io_u->file = ipo->file; |
Jens Axboe | 97af62c | 2007-05-22 11:12:13 +0200 | [diff] [blame] | 319 | |
| 320 | if ((io_u->file->flags & FIO_FILE_OPEN) == 0) { |
| 321 | int r = td_io_open_file(td, io_u->file); |
| 322 | |
| 323 | if (r) |
| 324 | return 1; |
| 325 | } |
| 326 | |
| 327 | get_file(ipo->file); |
| 328 | assert(io_u->file->flags & FIO_FILE_OPEN); |
Jens Axboe | e29d1b7 | 2006-10-18 15:43:15 +0200 | [diff] [blame] | 329 | io_u->ddir = DDIR_READ; |
Jens Axboe | 36167d8 | 2007-02-18 05:41:31 +0100 | [diff] [blame] | 330 | io_u->xfer_buf = io_u->buf; |
| 331 | io_u->xfer_buflen = io_u->buflen; |
Jens Axboe | e29d1b7 | 2006-10-18 15:43:15 +0200 | [diff] [blame] | 332 | free(ipo); |
| 333 | return 0; |
| 334 | } |
| 335 | |
| 336 | return 1; |
| 337 | } |