Hannes Reinecke | ded85c1 | 2015-01-08 07:43:42 +0100 | [diff] [blame] | 1 | /* |
| 2 | * scsi_logging.c |
| 3 | * |
| 4 | * Copyright (C) 2014 SUSE Linux Products GmbH |
| 5 | * Copyright (C) 2014 Hannes Reinecke <hare@suse.de> |
| 6 | * |
| 7 | * This file is released under the GPLv2 |
| 8 | */ |
| 9 | |
| 10 | #include <linux/kernel.h> |
| 11 | #include <linux/atomic.h> |
| 12 | |
| 13 | #include <scsi/scsi.h> |
| 14 | #include <scsi/scsi_cmnd.h> |
| 15 | #include <scsi/scsi_device.h> |
Hannes Reinecke | 9e5ed2a | 2015-01-08 07:43:44 +0100 | [diff] [blame] | 16 | #include <scsi/scsi_eh.h> |
Hannes Reinecke | ded85c1 | 2015-01-08 07:43:42 +0100 | [diff] [blame] | 17 | #include <scsi/scsi_dbg.h> |
| 18 | |
| 19 | #define SCSI_LOG_SPOOLSIZE 4096 |
Hannes Reinecke | ded85c1 | 2015-01-08 07:43:42 +0100 | [diff] [blame] | 20 | |
| 21 | #if (SCSI_LOG_SPOOLSIZE / SCSI_LOG_BUFSIZE) > BITS_PER_LONG |
| 22 | #warning SCSI logging bitmask too large |
| 23 | #endif |
| 24 | |
| 25 | struct scsi_log_buf { |
| 26 | char buffer[SCSI_LOG_SPOOLSIZE]; |
| 27 | unsigned long map; |
| 28 | }; |
| 29 | |
| 30 | static DEFINE_PER_CPU(struct scsi_log_buf, scsi_format_log); |
| 31 | |
| 32 | static char *scsi_log_reserve_buffer(size_t *len) |
| 33 | { |
| 34 | struct scsi_log_buf *buf; |
| 35 | unsigned long map_bits = sizeof(buf->buffer) / SCSI_LOG_BUFSIZE; |
| 36 | unsigned long idx = 0; |
| 37 | |
| 38 | preempt_disable(); |
| 39 | buf = this_cpu_ptr(&scsi_format_log); |
| 40 | idx = find_first_zero_bit(&buf->map, map_bits); |
| 41 | if (likely(idx < map_bits)) { |
| 42 | while (test_and_set_bit(idx, &buf->map)) { |
| 43 | idx = find_next_zero_bit(&buf->map, map_bits, idx); |
| 44 | if (idx >= map_bits) |
| 45 | break; |
| 46 | } |
| 47 | } |
| 48 | if (WARN_ON(idx >= map_bits)) { |
| 49 | preempt_enable(); |
| 50 | return NULL; |
| 51 | } |
| 52 | *len = SCSI_LOG_BUFSIZE; |
| 53 | return buf->buffer + idx * SCSI_LOG_BUFSIZE; |
| 54 | } |
| 55 | |
| 56 | static void scsi_log_release_buffer(char *bufptr) |
| 57 | { |
| 58 | struct scsi_log_buf *buf; |
| 59 | unsigned long idx; |
| 60 | int ret; |
| 61 | |
| 62 | buf = this_cpu_ptr(&scsi_format_log); |
| 63 | if (bufptr >= buf->buffer && |
| 64 | bufptr < buf->buffer + SCSI_LOG_SPOOLSIZE) { |
| 65 | idx = (bufptr - buf->buffer) / SCSI_LOG_BUFSIZE; |
| 66 | ret = test_and_clear_bit(idx, &buf->map); |
| 67 | WARN_ON(!ret); |
| 68 | } |
| 69 | preempt_enable(); |
| 70 | } |
| 71 | |
Hannes Reinecke | 2104551 | 2015-01-08 07:43:46 +0100 | [diff] [blame] | 72 | static inline const char *scmd_name(const struct scsi_cmnd *scmd) |
| 73 | { |
| 74 | return scmd->request->rq_disk ? |
| 75 | scmd->request->rq_disk->disk_name : NULL; |
| 76 | } |
| 77 | |
| 78 | static size_t sdev_format_header(char *logbuf, size_t logbuf_len, |
| 79 | const char *name, int tag) |
Hannes Reinecke | 9e5ed2a | 2015-01-08 07:43:44 +0100 | [diff] [blame] | 80 | { |
| 81 | size_t off = 0; |
| 82 | |
Hannes Reinecke | 2104551 | 2015-01-08 07:43:46 +0100 | [diff] [blame] | 83 | if (name) |
Hannes Reinecke | 9e5ed2a | 2015-01-08 07:43:44 +0100 | [diff] [blame] | 84 | off += scnprintf(logbuf + off, logbuf_len - off, |
Hannes Reinecke | 2104551 | 2015-01-08 07:43:46 +0100 | [diff] [blame] | 85 | "[%s] ", name); |
Hannes Reinecke | 9e5ed2a | 2015-01-08 07:43:44 +0100 | [diff] [blame] | 86 | |
| 87 | if (WARN_ON(off >= logbuf_len)) |
| 88 | return off; |
| 89 | |
| 90 | if (tag >= 0) |
| 91 | off += scnprintf(logbuf + off, logbuf_len - off, |
| 92 | "tag#%d ", tag); |
| 93 | return off; |
| 94 | } |
| 95 | |
Hannes Reinecke | ded85c1 | 2015-01-08 07:43:42 +0100 | [diff] [blame] | 96 | int sdev_prefix_printk(const char *level, const struct scsi_device *sdev, |
| 97 | const char *name, const char *fmt, ...) |
| 98 | { |
| 99 | va_list args; |
| 100 | char *logbuf; |
| 101 | size_t off = 0, logbuf_len; |
| 102 | int ret; |
| 103 | |
| 104 | if (!sdev) |
| 105 | return 0; |
| 106 | |
| 107 | logbuf = scsi_log_reserve_buffer(&logbuf_len); |
| 108 | if (!logbuf) |
| 109 | return 0; |
| 110 | |
| 111 | if (name) |
| 112 | off += scnprintf(logbuf + off, logbuf_len - off, |
| 113 | "[%s] ", name); |
Hannes Reinecke | 9e5ed2a | 2015-01-08 07:43:44 +0100 | [diff] [blame] | 114 | if (!WARN_ON(off >= logbuf_len)) { |
| 115 | va_start(args, fmt); |
| 116 | off += vscnprintf(logbuf + off, logbuf_len - off, fmt, args); |
| 117 | va_end(args); |
| 118 | } |
Hannes Reinecke | ded85c1 | 2015-01-08 07:43:42 +0100 | [diff] [blame] | 119 | ret = dev_printk(level, &sdev->sdev_gendev, "%s", logbuf); |
| 120 | scsi_log_release_buffer(logbuf); |
| 121 | return ret; |
| 122 | } |
| 123 | EXPORT_SYMBOL(sdev_prefix_printk); |
| 124 | |
| 125 | int scmd_printk(const char *level, const struct scsi_cmnd *scmd, |
| 126 | const char *fmt, ...) |
| 127 | { |
Hannes Reinecke | ded85c1 | 2015-01-08 07:43:42 +0100 | [diff] [blame] | 128 | va_list args; |
| 129 | char *logbuf; |
| 130 | size_t off = 0, logbuf_len; |
| 131 | int ret; |
| 132 | |
| 133 | if (!scmd || !scmd->cmnd) |
| 134 | return 0; |
| 135 | |
| 136 | logbuf = scsi_log_reserve_buffer(&logbuf_len); |
| 137 | if (!logbuf) |
| 138 | return 0; |
Hannes Reinecke | 2104551 | 2015-01-08 07:43:46 +0100 | [diff] [blame] | 139 | off = sdev_format_header(logbuf, logbuf_len, scmd_name(scmd), |
Hannes Reinecke | 9e5ed2a | 2015-01-08 07:43:44 +0100 | [diff] [blame] | 140 | scmd->request->tag); |
| 141 | if (off < logbuf_len) { |
| 142 | va_start(args, fmt); |
| 143 | off += vscnprintf(logbuf + off, logbuf_len - off, fmt, args); |
| 144 | va_end(args); |
| 145 | } |
Hannes Reinecke | ded85c1 | 2015-01-08 07:43:42 +0100 | [diff] [blame] | 146 | ret = dev_printk(level, &scmd->device->sdev_gendev, "%s", logbuf); |
| 147 | scsi_log_release_buffer(logbuf); |
| 148 | return ret; |
| 149 | } |
| 150 | EXPORT_SYMBOL(scmd_printk); |
Hannes Reinecke | 9e5ed2a | 2015-01-08 07:43:44 +0100 | [diff] [blame] | 151 | |
| 152 | static size_t scsi_format_opcode_name(char *buffer, size_t buf_len, |
| 153 | const unsigned char *cdbp) |
| 154 | { |
| 155 | int sa, cdb0; |
| 156 | const char *cdb_name = NULL, *sa_name = NULL; |
| 157 | size_t off; |
| 158 | |
| 159 | cdb0 = cdbp[0]; |
| 160 | if (cdb0 == VARIABLE_LENGTH_CMD) { |
| 161 | int len = scsi_varlen_cdb_length(cdbp); |
| 162 | |
| 163 | if (len < 10) { |
| 164 | off = scnprintf(buffer, buf_len, |
| 165 | "short variable length command, len=%d", |
| 166 | len); |
| 167 | return off; |
| 168 | } |
| 169 | sa = (cdbp[8] << 8) + cdbp[9]; |
| 170 | } else |
| 171 | sa = cdbp[1] & 0x1f; |
| 172 | |
| 173 | if (!scsi_opcode_sa_name(cdb0, sa, &cdb_name, &sa_name)) { |
| 174 | if (cdb_name) |
| 175 | off = scnprintf(buffer, buf_len, "%s", cdb_name); |
| 176 | else { |
| 177 | off = scnprintf(buffer, buf_len, "opcode=0x%x", cdb0); |
| 178 | if (WARN_ON(off >= buf_len)) |
| 179 | return off; |
| 180 | if (cdb0 >= VENDOR_SPECIFIC_CDB) |
| 181 | off += scnprintf(buffer + off, buf_len - off, |
| 182 | " (vendor)"); |
| 183 | else if (cdb0 >= 0x60 && cdb0 < 0x7e) |
| 184 | off += scnprintf(buffer + off, buf_len - off, |
| 185 | " (reserved)"); |
| 186 | } |
| 187 | } else { |
| 188 | if (sa_name) |
| 189 | off = scnprintf(buffer, buf_len, "%s", sa_name); |
| 190 | else if (cdb_name) |
| 191 | off = scnprintf(buffer, buf_len, "%s, sa=0x%x", |
| 192 | cdb_name, sa); |
| 193 | else |
| 194 | off = scnprintf(buffer, buf_len, |
| 195 | "opcode=0x%x, sa=0x%x", cdb0, sa); |
| 196 | } |
| 197 | WARN_ON(off >= buf_len); |
| 198 | return off; |
| 199 | } |
| 200 | |
| 201 | size_t __scsi_format_command(char *logbuf, size_t logbuf_len, |
| 202 | const unsigned char *cdb, size_t cdb_len) |
| 203 | { |
| 204 | int len, k; |
| 205 | size_t off; |
| 206 | |
| 207 | off = scsi_format_opcode_name(logbuf, logbuf_len, cdb); |
| 208 | if (off >= logbuf_len) |
| 209 | return off; |
| 210 | len = scsi_command_size(cdb); |
| 211 | if (cdb_len < len) |
| 212 | len = cdb_len; |
| 213 | /* print out all bytes in cdb */ |
| 214 | for (k = 0; k < len; ++k) { |
| 215 | if (off > logbuf_len - 3) |
| 216 | break; |
| 217 | off += scnprintf(logbuf + off, logbuf_len - off, |
| 218 | " %02x", cdb[k]); |
| 219 | } |
| 220 | return off; |
| 221 | } |
| 222 | EXPORT_SYMBOL(__scsi_format_command); |
| 223 | |
| 224 | void scsi_print_command(struct scsi_cmnd *cmd) |
| 225 | { |
Hannes Reinecke | 9e5ed2a | 2015-01-08 07:43:44 +0100 | [diff] [blame] | 226 | int k; |
| 227 | char *logbuf; |
| 228 | size_t off, logbuf_len; |
| 229 | |
| 230 | if (!cmd->cmnd) |
| 231 | return; |
| 232 | |
| 233 | logbuf = scsi_log_reserve_buffer(&logbuf_len); |
| 234 | if (!logbuf) |
| 235 | return; |
| 236 | |
Hannes Reinecke | 2104551 | 2015-01-08 07:43:46 +0100 | [diff] [blame] | 237 | off = sdev_format_header(logbuf, logbuf_len, |
| 238 | scmd_name(cmd), cmd->request->tag); |
Hannes Reinecke | 9e5ed2a | 2015-01-08 07:43:44 +0100 | [diff] [blame] | 239 | if (off >= logbuf_len) |
| 240 | goto out_printk; |
| 241 | off += scnprintf(logbuf + off, logbuf_len - off, "CDB: "); |
| 242 | if (WARN_ON(off >= logbuf_len)) |
| 243 | goto out_printk; |
| 244 | |
| 245 | off += scsi_format_opcode_name(logbuf + off, logbuf_len - off, |
| 246 | cmd->cmnd); |
| 247 | if (off >= logbuf_len) |
| 248 | goto out_printk; |
| 249 | |
| 250 | /* print out all bytes in cdb */ |
| 251 | if (cmd->cmd_len > 16) { |
| 252 | /* Print opcode in one line and use separate lines for CDB */ |
| 253 | off += scnprintf(logbuf + off, logbuf_len - off, "\n"); |
| 254 | dev_printk(KERN_INFO, &cmd->device->sdev_gendev, logbuf); |
| 255 | scsi_log_release_buffer(logbuf); |
| 256 | for (k = 0; k < cmd->cmd_len; k += 16) { |
| 257 | size_t linelen = min(cmd->cmd_len - k, 16); |
| 258 | |
| 259 | logbuf = scsi_log_reserve_buffer(&logbuf_len); |
| 260 | if (!logbuf) |
| 261 | break; |
Hannes Reinecke | 2104551 | 2015-01-08 07:43:46 +0100 | [diff] [blame] | 262 | off = sdev_format_header(logbuf, logbuf_len, |
| 263 | scmd_name(cmd), |
Hannes Reinecke | 9e5ed2a | 2015-01-08 07:43:44 +0100 | [diff] [blame] | 264 | cmd->request->tag); |
| 265 | if (!WARN_ON(off > logbuf_len - 58)) { |
| 266 | off += scnprintf(logbuf + off, logbuf_len - off, |
| 267 | "CDB[%02x]: ", k); |
| 268 | hex_dump_to_buffer(&cmd->cmnd[k], linelen, |
| 269 | 16, 1, logbuf + off, |
| 270 | logbuf_len - off, false); |
| 271 | } |
| 272 | dev_printk(KERN_INFO, &cmd->device->sdev_gendev, |
| 273 | logbuf); |
| 274 | scsi_log_release_buffer(logbuf); |
| 275 | } |
| 276 | return; |
| 277 | } |
| 278 | if (!WARN_ON(off > logbuf_len - 49)) { |
| 279 | off += scnprintf(logbuf + off, logbuf_len - off, " "); |
| 280 | hex_dump_to_buffer(cmd->cmnd, cmd->cmd_len, 16, 1, |
| 281 | logbuf + off, logbuf_len - off, |
| 282 | false); |
| 283 | } |
| 284 | out_printk: |
| 285 | dev_printk(KERN_INFO, &cmd->device->sdev_gendev, logbuf); |
| 286 | scsi_log_release_buffer(logbuf); |
| 287 | } |
| 288 | EXPORT_SYMBOL(scsi_print_command); |
Hannes Reinecke | 2104551 | 2015-01-08 07:43:46 +0100 | [diff] [blame] | 289 | |
| 290 | static size_t |
| 291 | scsi_format_extd_sense(char *buffer, size_t buf_len, |
| 292 | unsigned char asc, unsigned char ascq) |
| 293 | { |
| 294 | size_t off = 0; |
| 295 | const char *extd_sense_fmt = NULL; |
| 296 | const char *extd_sense_str = scsi_extd_sense_format(asc, ascq, |
| 297 | &extd_sense_fmt); |
| 298 | |
| 299 | if (extd_sense_str) { |
| 300 | off = scnprintf(buffer, buf_len, "Add. Sense: %s", |
| 301 | extd_sense_str); |
| 302 | if (extd_sense_fmt) |
| 303 | off += scnprintf(buffer + off, buf_len - off, |
| 304 | "(%s%x)", extd_sense_fmt, ascq); |
| 305 | } else { |
| 306 | if (asc >= 0x80) |
| 307 | off = scnprintf(buffer, buf_len, "<<vendor>>"); |
| 308 | off += scnprintf(buffer + off, buf_len - off, |
| 309 | "ASC=0x%x ", asc); |
| 310 | if (ascq >= 0x80) |
| 311 | off += scnprintf(buffer + off, buf_len - off, |
| 312 | "<<vendor>>"); |
| 313 | off += scnprintf(buffer + off, buf_len - off, |
| 314 | "ASCQ=0x%x ", ascq); |
| 315 | } |
| 316 | return off; |
| 317 | } |
| 318 | |
| 319 | static size_t |
| 320 | scsi_format_sense_hdr(char *buffer, size_t buf_len, |
| 321 | const struct scsi_sense_hdr *sshdr) |
| 322 | { |
| 323 | const char *sense_txt; |
| 324 | size_t off; |
| 325 | |
| 326 | off = scnprintf(buffer, buf_len, "Sense Key : "); |
| 327 | sense_txt = scsi_sense_key_string(sshdr->sense_key); |
| 328 | if (sense_txt) |
| 329 | off += scnprintf(buffer + off, buf_len - off, |
| 330 | "%s ", sense_txt); |
| 331 | else |
| 332 | off += scnprintf(buffer + off, buf_len - off, |
| 333 | "0x%x ", sshdr->sense_key); |
| 334 | off += scnprintf(buffer + off, buf_len - off, |
| 335 | scsi_sense_is_deferred(sshdr) ? "[deferred] " : "[current] "); |
| 336 | |
| 337 | if (sshdr->response_code >= 0x72) |
| 338 | off += scnprintf(buffer + off, buf_len - off, "[descriptor] "); |
| 339 | return off; |
| 340 | } |
| 341 | |
| 342 | static void |
| 343 | scsi_log_dump_sense(const struct scsi_device *sdev, const char *name, int tag, |
| 344 | const unsigned char *sense_buffer, int sense_len) |
| 345 | { |
| 346 | char *logbuf; |
| 347 | size_t logbuf_len; |
| 348 | int i; |
| 349 | |
| 350 | logbuf = scsi_log_reserve_buffer(&logbuf_len); |
| 351 | if (!logbuf) |
| 352 | return; |
| 353 | |
| 354 | for (i = 0; i < sense_len; i += 16) { |
| 355 | int len = min(sense_len - i, 16); |
| 356 | size_t off; |
| 357 | |
| 358 | off = sdev_format_header(logbuf, logbuf_len, |
| 359 | name, tag); |
| 360 | hex_dump_to_buffer(&sense_buffer[i], len, 16, 1, |
| 361 | logbuf + off, logbuf_len - off, |
| 362 | false); |
| 363 | dev_printk(KERN_INFO, &sdev->sdev_gendev, logbuf); |
| 364 | } |
| 365 | scsi_log_release_buffer(logbuf); |
| 366 | } |
| 367 | |
| 368 | static void |
| 369 | scsi_log_print_sense_hdr(const struct scsi_device *sdev, const char *name, |
| 370 | int tag, const struct scsi_sense_hdr *sshdr) |
| 371 | { |
| 372 | char *logbuf; |
| 373 | size_t off, logbuf_len; |
| 374 | |
| 375 | logbuf = scsi_log_reserve_buffer(&logbuf_len); |
| 376 | if (!logbuf) |
| 377 | return; |
| 378 | off = sdev_format_header(logbuf, logbuf_len, name, tag); |
| 379 | off += scsi_format_sense_hdr(logbuf + off, logbuf_len - off, sshdr); |
| 380 | dev_printk(KERN_INFO, &sdev->sdev_gendev, logbuf); |
| 381 | scsi_log_release_buffer(logbuf); |
| 382 | |
| 383 | logbuf = scsi_log_reserve_buffer(&logbuf_len); |
| 384 | if (!logbuf) |
| 385 | return; |
| 386 | off = sdev_format_header(logbuf, logbuf_len, name, tag); |
| 387 | off += scsi_format_extd_sense(logbuf + off, logbuf_len - off, |
| 388 | sshdr->asc, sshdr->ascq); |
| 389 | dev_printk(KERN_INFO, &sdev->sdev_gendev, logbuf); |
| 390 | scsi_log_release_buffer(logbuf); |
| 391 | } |
| 392 | |
| 393 | static void |
| 394 | scsi_log_print_sense(const struct scsi_device *sdev, const char *name, int tag, |
| 395 | const unsigned char *sense_buffer, int sense_len) |
| 396 | { |
| 397 | struct scsi_sense_hdr sshdr; |
| 398 | |
| 399 | if (scsi_normalize_sense(sense_buffer, sense_len, &sshdr)) |
| 400 | scsi_log_print_sense_hdr(sdev, name, tag, &sshdr); |
| 401 | else |
| 402 | scsi_log_dump_sense(sdev, name, tag, sense_buffer, sense_len); |
| 403 | } |
| 404 | |
| 405 | /* |
| 406 | * Print normalized SCSI sense header with a prefix. |
| 407 | */ |
| 408 | void |
| 409 | scsi_print_sense_hdr(const struct scsi_device *sdev, const char *name, |
| 410 | const struct scsi_sense_hdr *sshdr) |
| 411 | { |
| 412 | scsi_log_print_sense_hdr(sdev, name, -1, sshdr); |
| 413 | } |
| 414 | EXPORT_SYMBOL(scsi_print_sense_hdr); |
| 415 | |
| 416 | /* Normalize and print sense buffer with name prefix */ |
| 417 | void __scsi_print_sense(const struct scsi_device *sdev, const char *name, |
| 418 | const unsigned char *sense_buffer, int sense_len) |
| 419 | { |
| 420 | scsi_log_print_sense(sdev, name, -1, sense_buffer, sense_len); |
| 421 | } |
| 422 | EXPORT_SYMBOL(__scsi_print_sense); |
| 423 | |
| 424 | /* Normalize and print sense buffer in SCSI command */ |
| 425 | void scsi_print_sense(const struct scsi_cmnd *cmd) |
| 426 | { |
| 427 | scsi_log_print_sense(cmd->device, scmd_name(cmd), cmd->request->tag, |
| 428 | cmd->sense_buffer, SCSI_SENSE_BUFFERSIZE); |
| 429 | } |
| 430 | EXPORT_SYMBOL(scsi_print_sense); |
Hannes Reinecke | 026f8da | 2015-01-08 07:43:47 +0100 | [diff] [blame^] | 431 | |
| 432 | void scsi_print_result(const struct scsi_cmnd *cmd, const char *msg, |
| 433 | int disposition) |
| 434 | { |
| 435 | char *logbuf; |
| 436 | size_t off, logbuf_len; |
| 437 | const char *mlret_string = scsi_mlreturn_string(disposition); |
| 438 | const char *hb_string = scsi_hostbyte_string(cmd->result); |
| 439 | const char *db_string = scsi_driverbyte_string(cmd->result); |
| 440 | |
| 441 | logbuf = scsi_log_reserve_buffer(&logbuf_len); |
| 442 | if (!logbuf) |
| 443 | return; |
| 444 | |
| 445 | off = sdev_format_header(logbuf, logbuf_len, |
| 446 | scmd_name(cmd), cmd->request->tag); |
| 447 | |
| 448 | if (off >= logbuf_len) |
| 449 | goto out_printk; |
| 450 | |
| 451 | if (msg) { |
| 452 | off += scnprintf(logbuf + off, logbuf_len - off, |
| 453 | "%s: ", msg); |
| 454 | if (WARN_ON(off >= logbuf_len)) |
| 455 | goto out_printk; |
| 456 | } |
| 457 | if (mlret_string) |
| 458 | off += scnprintf(logbuf + off, logbuf_len - off, |
| 459 | "%s ", mlret_string); |
| 460 | else |
| 461 | off += scnprintf(logbuf + off, logbuf_len - off, |
| 462 | "UNKNOWN(0x%02x) ", disposition); |
| 463 | if (WARN_ON(off >= logbuf_len)) |
| 464 | goto out_printk; |
| 465 | |
| 466 | off += scnprintf(logbuf + off, logbuf_len - off, "Result: "); |
| 467 | if (WARN_ON(off >= logbuf_len)) |
| 468 | goto out_printk; |
| 469 | |
| 470 | if (hb_string) |
| 471 | off += scnprintf(logbuf + off, logbuf_len - off, |
| 472 | "hostbyte=%s ", hb_string); |
| 473 | else |
| 474 | off += scnprintf(logbuf + off, logbuf_len - off, |
| 475 | "hostbyte=0x%02x ", host_byte(cmd->result)); |
| 476 | if (WARN_ON(off >= logbuf_len)) |
| 477 | goto out_printk; |
| 478 | |
| 479 | if (db_string) |
| 480 | off += scnprintf(logbuf + off, logbuf_len - off, |
| 481 | "driverbyte=%s", db_string); |
| 482 | else |
| 483 | off += scnprintf(logbuf + off, logbuf_len - off, |
| 484 | "driverbyte=0x%02x", driver_byte(cmd->result)); |
| 485 | out_printk: |
| 486 | dev_printk(KERN_INFO, &cmd->device->sdev_gendev, logbuf); |
| 487 | scsi_log_release_buffer(logbuf); |
| 488 | } |
| 489 | EXPORT_SYMBOL(scsi_print_result); |