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Commit | Line | Data |
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c521693b GKH |
1 | /* |
2 | * scsi_id.c | |
3 | * | |
4 | * Main section of the scsi_id program | |
5 | * | |
6 | * Copyright (C) IBM Corp. 2003 | |
7 | * | |
8 | * This library is free software; you can redistribute it and/or modify | |
9 | * it under the terms of the GNU Lesser General Public License as | |
10 | * published by the Free Software Foundation; either version 2.1 of the | |
11 | * License, or (at your option) any later version. | |
12 | * | |
13 | * This library is distributed in the hope that it will be useful, but | |
14 | * WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
16 | * Lesser General Public License for more details. | |
17 | * | |
18 | * You should have received a copy of the GNU Lesser General Public | |
19 | * License along with this library; if not, write to the Free Software | |
20 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 | |
21 | * USA | |
22 | */ | |
23 | ||
24 | #include <stdio.h> | |
25 | #include <stdlib.h> | |
c521693b GKH |
26 | #include <unistd.h> |
27 | #include <signal.h> | |
28 | #include <fcntl.h> | |
29 | #include <errno.h> | |
30 | #include <string.h> | |
31 | #include <syslog.h> | |
32 | #include <stdarg.h> | |
33 | #include <ctype.h> | |
34 | #include <sys/stat.h> | |
1bed1db4 | 35 | #include <sysfs/libsysfs.h> |
e996d978 | 36 | #include "scsi_id_version.h" |
c521693b GKH |
37 | #include "scsi_id.h" |
38 | ||
1bed1db4 | 39 | #ifndef SCSI_ID_VERSION |
c521693b | 40 | #warning No version |
1bed1db4 | 41 | #define SCSI_ID_VERSION "unknown" |
c521693b GKH |
42 | #endif |
43 | ||
44 | /* | |
45 | * temporary names for mknod. | |
46 | */ | |
07544a93 PM |
47 | #define TMP_DIR "/tmp" |
48 | #define TMP_PREFIX "scsi" | |
c521693b | 49 | |
b484e436 PM |
50 | /* |
51 | * XXX Note the 'e' (send output to stderr in all cases), and 'c' (callout) | |
52 | * options are not supported, but other code is still left in place for | |
53 | * now. | |
54 | */ | |
b4a2906b | 55 | static const char short_options[] = "abd:f:gip:s:uvVx"; |
c521693b GKH |
56 | /* |
57 | * Just duplicate per dev options. | |
58 | */ | |
b484e436 | 59 | static const char dev_short_options[] = "bgp:"; |
c521693b GKH |
60 | |
61 | char sysfs_mnt_path[SYSFS_PATH_MAX]; | |
62 | ||
63 | static int all_good; | |
b4a2906b | 64 | static int always_info; |
c521693b GKH |
65 | static char *default_callout; |
66 | static int dev_specified; | |
67 | static int sys_specified; | |
e996d978 | 68 | static char config_file[MAX_NAME_LEN] = SCSI_ID_CONFIG_FILE; |
c521693b GKH |
69 | static int display_bus_id; |
70 | static int default_page_code; | |
71 | static int use_stderr; | |
72 | static int debug; | |
73 | static int hotplug_mode; | |
01f950e2 | 74 | static int reformat_serial; |
34129109 KS |
75 | static int export; |
76 | static char vendor_str[64]; | |
77 | static char model_str[64]; | |
aaff09a3 KS |
78 | static char revision_str[16]; |
79 | static char type_str[16]; | |
c521693b GKH |
80 | |
81 | void log_message (int level, const char *format, ...) | |
82 | { | |
83 | va_list args; | |
84 | ||
85 | if (!debug && level == LOG_DEBUG) | |
86 | return; | |
87 | ||
88 | va_start (args, format); | |
89 | if (!hotplug_mode || use_stderr) { | |
90 | vfprintf(stderr, format, args); | |
91 | } else { | |
92 | static int logging_init = 0; | |
93 | if (!logging_init) { | |
34129109 | 94 | openlog ("scsi_id", LOG_PID, LOG_DAEMON); |
c521693b GKH |
95 | logging_init = 1; |
96 | } | |
97 | ||
98 | vsyslog(level, format, args); | |
99 | } | |
100 | va_end (args); | |
101 | return; | |
102 | } | |
103 | ||
70721db6 | 104 | static void set_str(char *to, const char *from, size_t count) |
34129109 | 105 | { |
70721db6 | 106 | size_t i, j, len; |
34129109 | 107 | |
aaff09a3 | 108 | /* strip trailing whitespace */ |
34129109 | 109 | len = strnlen(from, count); |
c907c823 | 110 | while (len && isspace(from[len-1])) |
34129109 KS |
111 | len--; |
112 | ||
aaff09a3 | 113 | /* strip leading whitespace */ |
34129109 KS |
114 | i = 0; |
115 | while (isspace(from[i]) && (i < len)) | |
116 | i++; | |
117 | ||
118 | j = 0; | |
119 | while (i < len) { | |
aaff09a3 KS |
120 | /* substitute multiple whitespace */ |
121 | if (isspace(from[i])) { | |
122 | while (isspace(from[i])) | |
123 | i++; | |
34129109 | 124 | to[j++] = '_'; |
aaff09a3 KS |
125 | } |
126 | /* skip chars */ | |
127 | if (from[i] == '/') { | |
128 | i++; | |
129 | continue; | |
130 | } | |
131 | to[j++] = from[i++]; | |
132 | } | |
133 | to[j] = '\0'; | |
134 | } | |
135 | ||
853ccc43 | 136 | static void set_type(char *to, const char *from, size_t len) |
aaff09a3 KS |
137 | { |
138 | int type_num; | |
139 | char *eptr; | |
853ccc43 | 140 | char *type = "generic"; |
aaff09a3 KS |
141 | |
142 | type_num = strtoul(from, &eptr, 0); | |
143 | if (eptr != from) { | |
144 | switch (type_num) { | |
145 | case 0: | |
853ccc43 | 146 | type = "disk"; |
aaff09a3 KS |
147 | break; |
148 | case 1: | |
853ccc43 | 149 | type = "tape"; |
aaff09a3 KS |
150 | break; |
151 | case 4: | |
853ccc43 | 152 | type = "optical"; |
aaff09a3 KS |
153 | break; |
154 | case 5: | |
853ccc43 | 155 | type = "cd"; |
aaff09a3 KS |
156 | break; |
157 | case 7: | |
853ccc43 | 158 | type = "optical"; |
aaff09a3 KS |
159 | break; |
160 | case 0xe: | |
853ccc43 | 161 | type = "disk"; |
aaff09a3 KS |
162 | break; |
163 | case 0xf: | |
853ccc43 | 164 | type = "optical"; |
34129109 KS |
165 | break; |
166 | default: | |
aaff09a3 | 167 | break; |
34129109 | 168 | } |
34129109 | 169 | } |
853ccc43 KS |
170 | strncpy(to, type, len); |
171 | to[len-1] = '\0'; | |
34129109 KS |
172 | } |
173 | ||
4e05e423 PM |
174 | static int get_major_minor(struct sysfs_class_device *class_dev, int *maj, |
175 | int *min) | |
e996d978 | 176 | { |
4e05e423 | 177 | struct sysfs_attribute *dev_attr; |
e996d978 | 178 | |
4e05e423 PM |
179 | dev_attr = sysfs_get_classdev_attr(class_dev, "dev"); |
180 | if (!dev_attr) { | |
c521693b GKH |
181 | /* |
182 | * XXX This happens a lot, since sg has no dev attr. | |
e996d978 PM |
183 | * And now sysfsutils does not set a meaningful errno |
184 | * value. Someday change this back to a LOG_WARNING. | |
185 | * And if sysfsutils changes, check for ENOENT and handle | |
186 | * it separately. | |
c521693b | 187 | */ |
b484e436 | 188 | log_message(LOG_DEBUG, "%s: could not get dev attribute: %s\n", |
4e05e423 | 189 | class_dev->name, strerror(errno)); |
c521693b GKH |
190 | return -1; |
191 | } | |
c521693b | 192 | |
4e05e423 PM |
193 | dprintf("dev value %s", dev_attr->value); /* value has a trailing \n */ |
194 | if (sscanf(dev_attr->value, "%u:%u", maj, min) != 2) { | |
c521693b | 195 | log_message(LOG_WARNING, "%s: invalid dev major/minor\n", |
4e05e423 | 196 | class_dev->name); |
c521693b GKH |
197 | return -1; |
198 | } | |
199 | ||
200 | return 0; | |
201 | } | |
202 | ||
4e05e423 PM |
203 | static int create_tmp_dev(struct sysfs_class_device *class_dev, char *tmpdev, |
204 | int dev_type) | |
c521693b | 205 | { |
062db23d | 206 | int maj, min; |
c521693b | 207 | |
4e05e423 | 208 | dprintf("(%s)\n", class_dev->name); |
c521693b | 209 | |
4e05e423 | 210 | if (get_major_minor(class_dev, &maj, &min)) |
c521693b GKH |
211 | return -1; |
212 | snprintf(tmpdev, MAX_NAME_LEN, "%s/%s-maj%d-min%d-%u", | |
062db23d | 213 | TMP_DIR, TMP_PREFIX, maj, min, getpid()); |
c521693b GKH |
214 | |
215 | dprintf("tmpdev '%s'\n", tmpdev); | |
216 | ||
062db23d | 217 | if (mknod(tmpdev, 0600 | dev_type, makedev(maj, min))) { |
c521693b GKH |
218 | log_message(LOG_WARNING, "mknod failed: %s\n", strerror(errno)); |
219 | return -1; | |
220 | } | |
221 | return 0; | |
222 | } | |
223 | ||
224 | static int has_sysfs_prefix(const char *path, const char *prefix) | |
225 | { | |
226 | char match[MAX_NAME_LEN]; | |
227 | ||
228 | strncpy(match, sysfs_mnt_path, MAX_NAME_LEN); | |
229 | strncat(match, prefix, MAX_NAME_LEN); | |
230 | if (strncmp(path, match, strlen(match)) == 0) | |
231 | return 1; | |
232 | else | |
233 | return 0; | |
234 | } | |
235 | ||
236 | /* | |
237 | * get_value: | |
238 | * | |
239 | * buf points to an '=' followed by a quoted string ("foo") or a string ending | |
240 | * with a space or ','. | |
241 | * | |
242 | * Return a pointer to the NUL terminated string, returns NULL if no | |
243 | * matches. | |
244 | */ | |
245 | static char *get_value(char **buffer) | |
246 | { | |
247 | static char *quote_string = "\"\n"; | |
248 | static char *comma_string = ",\n"; | |
249 | char *val; | |
250 | char *end; | |
251 | ||
252 | if (**buffer == '"') { | |
253 | /* | |
254 | * skip leading quote, terminate when quote seen | |
255 | */ | |
256 | (*buffer)++; | |
257 | end = quote_string; | |
258 | } else { | |
259 | end = comma_string; | |
260 | } | |
261 | val = strsep(buffer, end); | |
262 | if (val && end == quote_string) | |
263 | /* | |
264 | * skip trailing quote | |
265 | */ | |
266 | (*buffer)++; | |
267 | ||
268 | while (isspace(**buffer)) | |
269 | (*buffer)++; | |
270 | ||
271 | return val; | |
272 | } | |
273 | ||
274 | static int argc_count(char *opts) | |
275 | { | |
276 | int i = 0; | |
277 | while (*opts != '\0') | |
278 | if (*opts++ == ' ') | |
279 | i++; | |
280 | return i; | |
281 | } | |
282 | ||
283 | /* | |
284 | * get_file_options: | |
285 | * | |
286 | * If vendor == NULL, find a line in the config file with only "OPTIONS="; | |
287 | * if vendor and model are set find the first OPTIONS line in the config | |
288 | * file that matches. Set argc and argv to match the OPTIONS string. | |
289 | * | |
290 | * vendor and model can end in '\n'. | |
291 | */ | |
292 | static int get_file_options(char *vendor, char *model, int *argc, | |
293 | char ***newargv) | |
294 | { | |
1bed1db4 | 295 | char *buffer; |
c521693b GKH |
296 | FILE *fd; |
297 | char *buf; | |
298 | char *str1; | |
299 | char *vendor_in, *model_in, *options_in; /* read in from file */ | |
300 | int lineno; | |
301 | int c; | |
302 | int retval = 0; | |
c521693b GKH |
303 | |
304 | dprintf("vendor='%s'; model='%s'\n", vendor, model); | |
305 | fd = fopen(config_file, "r"); | |
306 | if (fd == NULL) { | |
307 | dprintf("can't open %s\n", config_file); | |
308 | if (errno == ENOENT) { | |
309 | return 1; | |
310 | } else { | |
311 | log_message(LOG_WARNING, "can't open %s: %s\n", | |
312 | config_file, strerror(errno)); | |
313 | return -1; | |
314 | } | |
315 | } | |
316 | ||
1bed1db4 PM |
317 | /* |
318 | * Allocate a buffer rather than put it on the stack so we can | |
319 | * keep it around to parse any options (any allocated newargv | |
320 | * points into this buffer for its strings). | |
321 | */ | |
322 | buffer = malloc(MAX_BUFFER_LEN); | |
323 | if (!buffer) { | |
324 | log_message(LOG_WARNING, "Can't allocate memory.\n"); | |
325 | return -1; | |
326 | } | |
327 | ||
c521693b GKH |
328 | *newargv = NULL; |
329 | lineno = 0; | |
c521693b GKH |
330 | while (1) { |
331 | vendor_in = model_in = options_in = NULL; | |
332 | ||
1bed1db4 | 333 | buf = fgets(buffer, MAX_BUFFER_LEN, fd); |
c521693b GKH |
334 | if (buf == NULL) |
335 | break; | |
336 | lineno++; | |
1bed1db4 PM |
337 | if (buf[strlen(buffer) - 1] != '\n') { |
338 | log_message(LOG_WARNING, | |
339 | "Config file line %d too long.\n", lineno); | |
340 | break; | |
341 | } | |
c521693b GKH |
342 | |
343 | while (isspace(*buf)) | |
344 | buf++; | |
345 | ||
346 | if (*buf == '\0') | |
347 | /* | |
348 | * blank or all whitespace line | |
349 | */ | |
350 | continue; | |
351 | ||
352 | if (*buf == '#') | |
353 | /* | |
354 | * comment line | |
355 | */ | |
356 | continue; | |
357 | ||
358 | #ifdef LOTS | |
359 | dprintf("lineno %d: '%s'\n", lineno, buf); | |
360 | #endif | |
361 | str1 = strsep(&buf, "="); | |
362 | if (str1 && strcasecmp(str1, "VENDOR") == 0) { | |
363 | str1 = get_value(&buf); | |
364 | if (!str1) { | |
365 | retval = -1; | |
366 | break; | |
367 | } | |
368 | vendor_in = str1; | |
369 | ||
370 | str1 = strsep(&buf, "="); | |
371 | if (str1 && strcasecmp(str1, "MODEL") == 0) { | |
372 | str1 = get_value(&buf); | |
373 | if (!str1) { | |
374 | retval = -1; | |
375 | break; | |
376 | } | |
377 | model_in = str1; | |
378 | str1 = strsep(&buf, "="); | |
379 | } | |
380 | } | |
381 | ||
382 | if (str1 && strcasecmp(str1, "OPTIONS") == 0) { | |
383 | str1 = get_value(&buf); | |
384 | if (!str1) { | |
385 | retval = -1; | |
386 | break; | |
387 | } | |
388 | options_in = str1; | |
389 | } | |
390 | dprintf("config file line %d:" | |
391 | " vendor '%s'; model '%s'; options '%s'\n", | |
392 | lineno, vendor_in, model_in, options_in); | |
393 | /* | |
394 | * Only allow: [vendor=foo[,model=bar]]options=stuff | |
395 | */ | |
396 | if (!options_in || (!vendor_in && model_in)) { | |
397 | log_message(LOG_WARNING, | |
398 | "Error parsing config file line %d '%s'\n", | |
399 | lineno, buffer); | |
400 | retval = -1; | |
401 | break; | |
402 | } | |
403 | if (vendor == NULL) { | |
404 | if (vendor_in == NULL) { | |
405 | dprintf("matched global option\n"); | |
406 | break; | |
407 | } | |
408 | } else if ((vendor_in && strncmp(vendor, vendor_in, | |
409 | strlen(vendor_in)) == 0) && | |
410 | (!model_in || (strncmp(model, model_in, | |
411 | strlen(model_in)) == 0))) { | |
412 | /* | |
413 | * Matched vendor and optionally model. | |
414 | * | |
415 | * Note: a short vendor_in or model_in can | |
416 | * give a partial match (that is FOO | |
417 | * matches FOOBAR). | |
418 | */ | |
419 | dprintf("matched vendor/model\n"); | |
420 | break; | |
421 | } else { | |
422 | dprintf("no match\n"); | |
423 | } | |
424 | } | |
425 | ||
426 | if (retval == 0) { | |
427 | if (vendor_in != NULL || model_in != NULL || | |
428 | options_in != NULL) { | |
429 | /* | |
430 | * Something matched. Allocate newargv, and store | |
431 | * values found in options_in. | |
432 | */ | |
1bed1db4 PM |
433 | strcpy(buffer, options_in); |
434 | c = argc_count(buffer) + 2; | |
c521693b GKH |
435 | *newargv = calloc(c, sizeof(**newargv)); |
436 | if (!*newargv) { | |
437 | log_message(LOG_WARNING, | |
1bed1db4 | 438 | "Can't allocate memory.\n"); |
c521693b GKH |
439 | retval = -1; |
440 | } else { | |
441 | *argc = c; | |
442 | c = 0; | |
1bed1db4 PM |
443 | /* |
444 | * argv[0] at 0 is skipped by getopt, but | |
445 | * store the buffer address there for | |
446 | * alter freeing. | |
447 | */ | |
448 | (*newargv)[c] = buffer; | |
c521693b | 449 | for (c = 1; c < *argc; c++) |
1bed1db4 | 450 | (*newargv)[c] = strsep(&buffer, " "); |
c521693b GKH |
451 | } |
452 | } else { | |
453 | /* | |
454 | * No matches. | |
455 | */ | |
456 | retval = 1; | |
457 | } | |
458 | } | |
1bed1db4 PM |
459 | if (retval != 0) |
460 | free(buffer); | |
c521693b GKH |
461 | fclose(fd); |
462 | return retval; | |
463 | } | |
464 | ||
465 | static int set_options(int argc, char **argv, const char *short_opts, | |
1bed1db4 | 466 | char *target, char *maj_min_dev) |
c521693b GKH |
467 | { |
468 | int option; | |
c521693b GKH |
469 | |
470 | /* | |
1bed1db4 PM |
471 | * optind is a global extern used by getopt. Since we can call |
472 | * set_options twice (once for command line, and once for config | |
473 | * file) we have to reset this back to 1. [Note glibc handles | |
474 | * setting this to 0, but klibc does not.] | |
c521693b | 475 | */ |
1bed1db4 | 476 | optind = 1; |
c521693b | 477 | while (1) { |
853ccc43 | 478 | option = getopt(argc, argv, short_opts); |
c521693b GKH |
479 | if (option == -1) |
480 | break; | |
481 | ||
482 | if (optarg) | |
483 | dprintf("option '%c' arg '%s'\n", option, optarg); | |
484 | else | |
485 | dprintf("option '%c'\n", option); | |
486 | ||
487 | switch (option) { | |
b4a2906b HR |
488 | case 'a': |
489 | always_info = 1; | |
490 | break; | |
c521693b GKH |
491 | case 'b': |
492 | all_good = 0; | |
493 | break; | |
494 | ||
495 | case 'c': | |
496 | default_callout = optarg; | |
497 | break; | |
498 | ||
499 | case 'd': | |
500 | dev_specified = 1; | |
501 | strncpy(maj_min_dev, optarg, MAX_NAME_LEN); | |
502 | break; | |
503 | ||
504 | case 'e': | |
505 | use_stderr = 1; | |
506 | break; | |
507 | ||
508 | case 'f': | |
509 | strncpy(config_file, optarg, MAX_NAME_LEN); | |
510 | break; | |
511 | ||
512 | case 'g': | |
513 | all_good = 1; | |
514 | break; | |
515 | ||
516 | case 'i': | |
517 | display_bus_id = 1; | |
518 | break; | |
519 | ||
520 | case 'p': | |
521 | if (strcmp(optarg, "0x80") == 0) { | |
522 | default_page_code = 0x80; | |
523 | } else if (strcmp(optarg, "0x83") == 0) { | |
524 | default_page_code = 0x83; | |
525 | } else { | |
526 | log_message(LOG_WARNING, | |
527 | "Unknown page code '%s'\n", optarg); | |
528 | return -1; | |
529 | } | |
530 | break; | |
531 | ||
532 | case 's': | |
533 | sys_specified = 1; | |
534 | strncpy(target, sysfs_mnt_path, MAX_NAME_LEN); | |
535 | strncat(target, optarg, MAX_NAME_LEN); | |
536 | break; | |
537 | ||
01f950e2 PM |
538 | case 'u': |
539 | reformat_serial = 1; | |
540 | break; | |
541 | ||
34129109 KS |
542 | case 'x': |
543 | export = 1; | |
544 | break; | |
545 | ||
c521693b GKH |
546 | case 'v': |
547 | debug++; | |
548 | break; | |
549 | ||
550 | case 'V': | |
551 | log_message(LOG_WARNING, "scsi_id version: %s\n", | |
1bed1db4 | 552 | SCSI_ID_VERSION); |
c521693b GKH |
553 | exit(0); |
554 | break; | |
555 | ||
556 | default: | |
557 | log_message(LOG_WARNING, | |
558 | "Unknown or bad option '%c' (0x%x)\n", | |
559 | option, option); | |
560 | return -1; | |
561 | } | |
562 | } | |
563 | return 0; | |
564 | } | |
565 | ||
b484e436 | 566 | static int per_dev_options(struct sysfs_device *scsi_dev, int *good_bad, |
c521693b GKH |
567 | int *page_code, char *callout) |
568 | { | |
569 | int retval; | |
570 | int newargc; | |
571 | char **newargv = NULL; | |
aaff09a3 | 572 | struct sysfs_attribute *vendor, *model, *type; |
c521693b | 573 | int option; |
c521693b GKH |
574 | |
575 | *good_bad = all_good; | |
576 | *page_code = default_page_code; | |
577 | if (default_callout && (callout != default_callout)) | |
578 | strncpy(callout, default_callout, MAX_NAME_LEN); | |
579 | else | |
580 | callout[0] = '\0'; | |
581 | ||
4e05e423 PM |
582 | vendor = sysfs_get_device_attr(scsi_dev, "vendor"); |
583 | if (!vendor) { | |
e996d978 | 584 | log_message(LOG_WARNING, "%s: cannot get vendor attribute\n", |
c521693b GKH |
585 | scsi_dev->name); |
586 | return -1; | |
587 | } | |
34129109 | 588 | set_str(vendor_str, vendor->value, sizeof(vendor_str)-1); |
c521693b | 589 | |
4e05e423 PM |
590 | model = sysfs_get_device_attr(scsi_dev, "model"); |
591 | if (!model) { | |
e996d978 | 592 | log_message(LOG_WARNING, "%s: cannot get model attribute\n", |
c521693b GKH |
593 | scsi_dev->name); |
594 | return -1; | |
595 | } | |
34129109 | 596 | set_str(model_str, model->value, sizeof(model_str)-1); |
c521693b | 597 | |
aaff09a3 KS |
598 | type = sysfs_get_device_attr(scsi_dev, "type"); |
599 | if (!type) { | |
600 | log_message(LOG_WARNING, "%s: cannot get type attribute\n", | |
601 | scsi_dev->name); | |
602 | return -1; | |
603 | } | |
853ccc43 | 604 | set_type(type_str, type->value, sizeof(type_str)); |
aaff09a3 KS |
605 | |
606 | type = sysfs_get_device_attr(scsi_dev, "rev"); | |
607 | if (!type) { | |
608 | log_message(LOG_WARNING, "%s: cannot get type attribute\n", | |
609 | scsi_dev->name); | |
610 | return -1; | |
611 | } | |
612 | set_str(revision_str, type->value, sizeof(revision_str)-1); | |
613 | ||
4e05e423 PM |
614 | retval = get_file_options(vendor->value, model->value, &newargc, |
615 | &newargv); | |
c521693b | 616 | |
1bed1db4 | 617 | optind = 1; /* reset this global extern */ |
c521693b | 618 | while (retval == 0) { |
1bed1db4 | 619 | option = getopt(newargc, newargv, dev_short_options); |
c521693b GKH |
620 | if (option == -1) |
621 | break; | |
622 | ||
623 | if (optarg) | |
624 | dprintf("option '%c' arg '%s'\n", option, optarg); | |
625 | else | |
626 | dprintf("option '%c'\n", option); | |
627 | ||
628 | switch (option) { | |
629 | case 'b': | |
630 | *good_bad = 0; | |
631 | break; | |
632 | ||
633 | case 'c': | |
634 | strncpy(callout, default_callout, MAX_NAME_LEN); | |
635 | break; | |
636 | ||
637 | case 'g': | |
638 | *good_bad = 1; | |
639 | break; | |
640 | ||
641 | case 'p': | |
642 | if (strcmp(optarg, "0x80") == 0) { | |
643 | *page_code = 0x80; | |
644 | } else if (strcmp(optarg, "0x83") == 0) { | |
645 | *page_code = 0x83; | |
646 | } else { | |
647 | log_message(LOG_WARNING, | |
648 | "Unknown page code '%s'\n", optarg); | |
649 | retval = -1; | |
650 | } | |
651 | break; | |
652 | ||
653 | default: | |
654 | log_message(LOG_WARNING, | |
655 | "Unknown or bad option '%c' (0x%x)\n", | |
656 | option, option); | |
657 | retval = -1; | |
658 | break; | |
659 | } | |
660 | } | |
661 | ||
1bed1db4 PM |
662 | if (newargv) { |
663 | free(newargv[0]); | |
c521693b | 664 | free(newargv); |
1bed1db4 | 665 | } |
c521693b GKH |
666 | return retval; |
667 | } | |
668 | ||
01f950e2 PM |
669 | /* |
670 | * format_serial: replace to whitespaces by underscores for calling | |
671 | * programs that use the serial for device naming (multipath, Suse | |
672 | * naming, etc...) | |
673 | */ | |
674 | static void format_serial(char *serial) | |
675 | { | |
676 | char *p = serial; | |
677 | ||
678 | while (*p != '\0') { | |
679 | if (isspace(*p)) | |
680 | *p = '_'; | |
681 | p++; | |
682 | } | |
01f950e2 PM |
683 | } |
684 | ||
c521693b GKH |
685 | /* |
686 | * scsi_id: try to get an id, if one is found, printf it to stdout. | |
687 | * returns a value passed to exit() - 0 if printed an id, else 1. This | |
688 | * could be expanded, for example, if we want to report a failure like no | |
689 | * memory etc. return 2, and return 1 for expected cases (like broken | |
690 | * device found) that do not print an id. | |
691 | */ | |
692 | static int scsi_id(const char *target_path, char *maj_min_dev) | |
693 | { | |
694 | int retval; | |
695 | int dev_type = 0; | |
01f950e2 | 696 | char *serial, *unaligned_buf; |
b484e436 PM |
697 | struct sysfs_class_device *class_dev; /* of target_path */ |
698 | struct sysfs_class_device *class_dev_parent; /* for partitions */ | |
699 | struct sysfs_device *scsi_dev; /* the scsi_device */ | |
c521693b GKH |
700 | int good_dev; |
701 | int page_code; | |
702 | char callout[MAX_NAME_LEN]; | |
703 | ||
704 | dprintf("target_path %s\n", target_path); | |
705 | ||
706 | /* | |
707 | * Ugly: depend on the sysfs path to tell us whether this is a | |
708 | * block or char device. This should probably be encoded in the | |
709 | * "dev" along with the major/minor. | |
710 | */ | |
711 | if (has_sysfs_prefix(target_path, "/block")) { | |
712 | dev_type = S_IFBLK; | |
713 | } else if (has_sysfs_prefix(target_path, "/class")) { | |
714 | dev_type = S_IFCHR; | |
715 | } else { | |
716 | if (!hotplug_mode) { | |
717 | log_message(LOG_WARNING, | |
718 | "Non block or class device '%s'\n", | |
719 | target_path); | |
720 | return 1; | |
721 | } else { | |
722 | /* | |
723 | * Expected in some cases. | |
724 | */ | |
725 | dprintf("Non block or class device\n"); | |
726 | return 0; | |
727 | } | |
728 | } | |
729 | ||
b484e436 PM |
730 | class_dev = sysfs_open_class_device_path(target_path); |
731 | if (!class_dev) { | |
732 | log_message(LOG_WARNING, "open class %s failed: %s\n", | |
733 | target_path, strerror(errno)); | |
734 | return 1; | |
735 | } | |
736 | class_dev_parent = sysfs_get_classdev_parent(class_dev); | |
737 | dprintf("class_dev 0x%p; class_dev_parent 0x%p\n", class_dev, | |
738 | class_dev_parent); | |
739 | if (class_dev_parent) { | |
740 | scsi_dev = sysfs_get_classdev_device(class_dev_parent); | |
741 | } else { | |
742 | scsi_dev = sysfs_get_classdev_device(class_dev); | |
743 | } | |
744 | ||
745 | /* | |
746 | * The close of scsi_dev will close class_dev or class_dev_parent. | |
747 | */ | |
748 | ||
749 | /* | |
750 | * We assume we are called after the device is completely ready, | |
751 | * so we don't have to loop here like udev. (And we are usually | |
752 | * called via udev.) | |
753 | */ | |
754 | if (!scsi_dev) { | |
755 | /* | |
756 | * errno is not set if we can't find the device link, so | |
757 | * don't print it out here. | |
758 | */ | |
759 | log_message(LOG_WARNING, "Cannot find sysfs device associated with %s\n", | |
760 | target_path); | |
c521693b | 761 | return 1; |
b484e436 | 762 | } |
c521693b | 763 | |
c521693b GKH |
764 | |
765 | /* | |
b484e436 | 766 | * Allow only scsi devices. |
c521693b GKH |
767 | * |
768 | * Other block devices can support SG IO, but only ide-cd does, so | |
769 | * for now, don't bother with anything else. | |
770 | */ | |
b484e436 | 771 | if (strcmp(scsi_dev->bus, "scsi") != 0) { |
c521693b GKH |
772 | if (hotplug_mode) |
773 | /* | |
774 | * Expected in some cases. | |
775 | */ | |
776 | dprintf("%s is not a scsi device\n", target_path); | |
777 | else | |
778 | log_message(LOG_WARNING, "%s is not a scsi device\n", | |
779 | target_path); | |
780 | return 1; | |
c521693b GKH |
781 | } |
782 | ||
783 | /* | |
784 | * mknod a temp dev to communicate with the device. | |
785 | */ | |
4e05e423 | 786 | if (!dev_specified && create_tmp_dev(class_dev, maj_min_dev, |
c521693b GKH |
787 | dev_type)) { |
788 | dprintf("create_tmp_dev failed\n"); | |
789 | return 1; | |
790 | } | |
791 | ||
c521693b GKH |
792 | /* |
793 | * Get any per device (vendor + model) options from the config | |
794 | * file. | |
795 | */ | |
796 | retval = per_dev_options(scsi_dev, &good_dev, &page_code, callout); | |
797 | dprintf("per dev options: good %d; page code 0x%x; callout '%s'\n", | |
798 | good_dev, page_code, callout); | |
799 | ||
01f950e2 PM |
800 | #define ALIGN 512 |
801 | unaligned_buf = malloc(MAX_SERIAL_LEN + ALIGN); | |
b337e607 PM |
802 | serial = (char*) (((unsigned long) unaligned_buf + (ALIGN - 1)) |
803 | & ~(ALIGN - 1)); | |
01f950e2 PM |
804 | dprintf("buffer unaligned 0x%p; aligned 0x%p\n", unaligned_buf, serial); |
805 | #undef ALIGN | |
806 | ||
c521693b GKH |
807 | if (!good_dev) { |
808 | retval = 1; | |
809 | } else if (callout[0] != '\0') { | |
810 | /* | |
b484e436 | 811 | * XXX Disabled for now ('c' is not in any options[]). |
c521693b GKH |
812 | */ |
813 | retval = 1; | |
814 | } else if (scsi_get_serial(scsi_dev, maj_min_dev, page_code, | |
815 | serial, MAX_SERIAL_LEN)) { | |
b4a2906b | 816 | retval = always_info?0:1; |
c521693b GKH |
817 | } else { |
818 | retval = 0; | |
819 | } | |
820 | if (!retval) { | |
34129109 KS |
821 | if (export) { |
822 | static char serial_str[64]; | |
823 | printf("ID_VENDOR=%s\n", vendor_str); | |
824 | printf("ID_MODEL=%s\n", model_str); | |
aaff09a3 | 825 | printf("ID_REVISION=%s\n", revision_str); |
34129109 KS |
826 | set_str(serial_str, serial, sizeof(serial_str)); |
827 | printf("ID_SERIAL=%s\n", serial_str); | |
aaff09a3 | 828 | printf("ID_TYPE=%s\n", type_str); |
46f01c6d | 829 | printf("ID_BUS=scsi\n"); |
34129109 KS |
830 | } else { |
831 | if (reformat_serial) | |
832 | format_serial(serial); | |
833 | if (display_bus_id) | |
834 | printf("%s: ", scsi_dev->name); | |
835 | printf("%s\n", serial); | |
836 | } | |
c521693b GKH |
837 | dprintf("%s\n", serial); |
838 | retval = 0; | |
839 | } | |
b484e436 | 840 | sysfs_close_device(scsi_dev); |
c521693b GKH |
841 | |
842 | if (!dev_specified) | |
843 | unlink(maj_min_dev); | |
844 | ||
845 | return retval; | |
846 | } | |
847 | ||
848 | int main(int argc, char **argv) | |
849 | { | |
850 | int retval; | |
851 | char *devpath; | |
852 | char target_path[MAX_NAME_LEN]; | |
853 | char maj_min_dev[MAX_NAME_LEN]; | |
854 | int newargc; | |
855 | char **newargv; | |
856 | ||
857 | if (getenv("DEBUG")) | |
858 | debug++; | |
859 | ||
c521693b GKH |
860 | dprintf("argc is %d\n", argc); |
861 | if (sysfs_get_mnt_path(sysfs_mnt_path, MAX_NAME_LEN)) { | |
862 | log_message(LOG_WARNING, "sysfs_get_mnt_path failed: %s\n", | |
863 | strerror(errno)); | |
864 | exit(1); | |
865 | } | |
866 | ||
07544a93 PM |
867 | devpath = getenv("DEVPATH"); |
868 | if (devpath) { | |
c521693b | 869 | /* |
07544a93 | 870 | * This implies that we were invoked via udev or hotplug. |
c521693b | 871 | */ |
07544a93 | 872 | hotplug_mode = 1; |
c521693b | 873 | sys_specified = 1; |
c521693b GKH |
874 | strncpy(target_path, sysfs_mnt_path, MAX_NAME_LEN); |
875 | strncat(target_path, devpath, MAX_NAME_LEN); | |
c521693b GKH |
876 | } |
877 | ||
878 | /* | |
07544a93 | 879 | * Get config file options. |
c521693b GKH |
880 | */ |
881 | newargv = NULL; | |
882 | retval = get_file_options(NULL, NULL, &newargc, &newargv); | |
883 | if (retval < 0) { | |
884 | exit(1); | |
885 | } else if (newargv && (retval == 0)) { | |
1bed1db4 PM |
886 | if (set_options(newargc, newargv, short_options, target_path, |
887 | maj_min_dev) < 0) | |
c521693b GKH |
888 | exit(1); |
889 | free(newargv); | |
890 | } | |
07544a93 PM |
891 | /* |
892 | * Get command line options (overriding any config file or DEVPATH | |
893 | * settings). | |
894 | */ | |
895 | if (set_options(argc, argv, short_options, target_path, | |
896 | maj_min_dev) < 0) | |
062db23d | 897 | exit(1); |
c521693b GKH |
898 | |
899 | if (!sys_specified) { | |
900 | log_message(LOG_WARNING, "-s must be specified\n"); | |
901 | exit(1); | |
902 | } | |
903 | ||
904 | retval = scsi_id(target_path, maj_min_dev); | |
905 | exit(retval); | |
906 | } |