Bug Summary

File:build-scan/../src/udev/scsi_id/scsi_id.c
Warning:line 290, column 34
Potential leak of memory pointed to by 'buffer'

Annotated Source Code

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clang -cc1 -cc1 -triple x86_64-unknown-linux-gnu -analyze -disable-free -disable-llvm-verifier -discard-value-names -main-file-name scsi_id.c -analyzer-store=region -analyzer-opt-analyze-nested-blocks -analyzer-checker=core -analyzer-checker=apiModeling -analyzer-checker=unix -analyzer-checker=deadcode -analyzer-checker=security.insecureAPI.UncheckedReturn -analyzer-checker=security.insecureAPI.getpw -analyzer-checker=security.insecureAPI.gets -analyzer-checker=security.insecureAPI.mktemp -analyzer-checker=security.insecureAPI.mkstemp -analyzer-checker=security.insecureAPI.vfork -analyzer-checker=nullability.NullPassedToNonnull -analyzer-checker=nullability.NullReturnedFromNonnull -analyzer-output plist -w -setup-static-analyzer -mrelocation-model static -mframe-pointer=all -relaxed-aliasing -menable-no-infs -menable-no-nans -menable-unsafe-fp-math -fno-signed-zeros -mreassociate -freciprocal-math -fdenormal-fp-math=preserve-sign,preserve-sign -ffp-contract=fast -fno-rounding-math -ffast-math -ffinite-math-only -mconstructor-aliases -munwind-tables -target-cpu x86-64 -tune-cpu generic -fno-split-dwarf-inlining -debugger-tuning=gdb -resource-dir /usr/lib64/clang/12.0.0 -include config.h -I src/udev/scsi_id.p -I src/udev -I ../src/udev -I src/basic -I ../src/basic -I src/shared -I ../src/shared -I src/systemd -I ../src/systemd -I src/journal -I ../src/journal -I src/journal-remote -I ../src/journal-remote -I src/nspawn -I ../src/nspawn -I src/resolve -I ../src/resolve -I src/timesync -I ../src/timesync -I ../src/time-wait-sync -I src/login -I ../src/login -I src/libudev -I ../src/libudev -I src/core -I ../src/core -I ../src/libsystemd/sd-bus -I ../src/libsystemd/sd-device -I ../src/libsystemd/sd-hwdb -I ../src/libsystemd/sd-id128 -I ../src/libsystemd/sd-netlink -I ../src/libsystemd/sd-network -I src/libsystemd-network -I ../src/libsystemd-network -I . -I .. -D _FILE_OFFSET_BITS=64 -D LOG_REALM=LOG_REALM_UDEV -internal-isystem /usr/local/include -internal-isystem /usr/lib64/clang/12.0.0/include -internal-externc-isystem /include -internal-externc-isystem /usr/include -Wwrite-strings -Wno-unused-parameter -Wno-missing-field-initializers -Wno-unused-result -Wno-format-signedness -Wno-error=nonnull -std=gnu99 -fconst-strings -fdebug-compilation-dir /home/mrc0mmand/repos/@redhat-plumbers/systemd-rhel8/build-scan -ferror-limit 19 -fvisibility hidden -stack-protector 2 -fgnuc-version=4.2.1 -fcolor-diagnostics -analyzer-output=html -faddrsig -o /tmp/scan-build-2021-07-16-221226-1465241-1 -x c ../src/udev/scsi_id/scsi_id.c
1/* SPDX-License-Identifier: GPL-2.0+ */
2/*
3 * Copyright © IBM Corp. 2003
4 * Copyright © SUSE Linux Products GmbH, 2006
5 *
6 */
7
8#include <ctype.h>
9#include <errno(*__errno_location ()).h>
10#include <fcntl.h>
11#include <getopt.h>
12#include <signal.h>
13#include <stdarg.h>
14#include <stdbool.h>
15#include <stdio.h>
16#include <stdlib.h>
17#include <string.h>
18#include <sys/stat.h>
19#include <unistd.h>
20
21#include "libudev.h"
22
23#include "fd-util.h"
24#include "libudev-private.h"
25#include "scsi_id.h"
26#include "string-util.h"
27#include "udev-util.h"
28
29static const struct option options[] = {
30 { "device", required_argument1, NULL((void*)0), 'd' },
31 { "config", required_argument1, NULL((void*)0), 'f' },
32 { "page", required_argument1, NULL((void*)0), 'p' },
33 { "blacklisted", no_argument0, NULL((void*)0), 'b' },
34 { "whitelisted", no_argument0, NULL((void*)0), 'g' },
35 { "replace-whitespace", no_argument0, NULL((void*)0), 'u' },
36 { "sg-version", required_argument1, NULL((void*)0), 's' },
37 { "verbose", no_argument0, NULL((void*)0), 'v' },
38 { "version", no_argument0, NULL((void*)0), 'V' }, /* don't advertise -V */
39 { "export", no_argument0, NULL((void*)0), 'x' },
40 { "help", no_argument0, NULL((void*)0), 'h' },
41 {}
42};
43
44static bool_Bool all_good = false0;
45static bool_Bool dev_specified = false0;
46static char config_file[MAX_PATH_LEN512] = "/etc/scsi_id.config";
47static enum page_code default_page_code = PAGE_UNSPECIFIED;
48static int sg_version = 4;
49static bool_Bool reformat_serial = false0;
50static bool_Bool export = false0;
51static char vendor_str[64];
52static char model_str[64];
53static char vendor_enc_str[256];
54static char model_enc_str[256];
55static char revision_str[16];
56static char type_str[16];
57
58static void set_type(const char *from, char *to, size_t len)
59{
60 int type_num;
61 char *eptr;
62 const char *type = "generic";
63
64 type_num = strtoul(from, &eptr, 0);
65 if (eptr != from) {
66 switch (type_num) {
67 case 0:
68 type = "disk";
69 break;
70 case 1:
71 type = "tape";
72 break;
73 case 4:
74 type = "optical";
75 break;
76 case 5:
77 type = "cd";
78 break;
79 case 7:
80 type = "optical";
81 break;
82 case 0xe:
83 type = "disk";
84 break;
85 case 0xf:
86 type = "optical";
87 break;
88 default:
89 break;
90 }
91 }
92 strscpy(to, len, type);
93}
94
95/*
96 * get_value:
97 *
98 * buf points to an '=' followed by a quoted string ("foo") or a string ending
99 * with a space or ','.
100 *
101 * Return a pointer to the NUL terminated string, returns NULL if no
102 * matches.
103 */
104static char *get_value(char **buffer)
105{
106 static const char *quote_string = "\"\n";
107 static const char *comma_string = ",\n";
108 char *val;
109 const char *end;
110
111 if (**buffer == '"') {
112 /*
113 * skip leading quote, terminate when quote seen
114 */
115 (*buffer)++;
116 end = quote_string;
117 } else {
118 end = comma_string;
119 }
120 val = strsep(buffer, end);
121 if (val && end == quote_string)
122 /*
123 * skip trailing quote
124 */
125 (*buffer)++;
126
127 while (isspace(**buffer)((*__ctype_b_loc ())[(int) ((**buffer))] & (unsigned short
int) _ISspace))
128 (*buffer)++;
129
130 return val;
131}
132
133static int argc_count(char *opts)
134{
135 int i = 0;
136 while (*opts != '\0')
137 if (*opts++ == ' ')
138 i++;
139 return i;
140}
141
142/*
143 * get_file_options:
144 *
145 * If vendor == NULL, find a line in the config file with only "OPTIONS=";
146 * if vendor and model are set find the first OPTIONS line in the config
147 * file that matches. Set argc and argv to match the OPTIONS string.
148 *
149 * vendor and model can end in '\n'.
150 */
151static int get_file_options(struct udev *udev,
152 const char *vendor, const char *model,
153 int *argc, char ***newargv)
154{
155 _cleanup_free___attribute__((cleanup(freep))) char *buffer = NULL((void*)0);
156 _cleanup_fclose___attribute__((cleanup(fclosep))) FILE *f;
157 char *buf;
158 char *str1;
159 char *vendor_in, *model_in, *options_in; /* read in from file */
160 int lineno;
161 int c;
162 int retval = 0;
163
164 f = fopen(config_file, "re");
165 if (f == NULL((void*)0)) {
4
←
Assuming 'f' is not equal to NULL
→
5
←
Taking false branch
→
166 if (errno(*__errno_location ()) == ENOENT2)
167 return 1;
168 else {
169 log_error_errno(errno, "can't open %s: %m", config_file)({ int _level = ((3)), _e = (((*__errno_location ()))), _realm
= (LOG_REALM_UDEV); (log_get_max_level_realm(_realm) >= (
(_level) & 0x07)) ? log_internal_realm(((_realm) <<
10 | (_level)), _e, "../src/udev/scsi_id/scsi_id.c", 169, __func__
, "can't open %s: %m", config_file) : -abs(_e); });
170 return -1;
171 }
172 }
173
174 /*
175 * Allocate a buffer rather than put it on the stack so we can
176 * keep it around to parse any options (any allocated newargv
177 * points into this buffer for its strings).
178 */
179 buffer = malloc(MAX_BUFFER_LEN256);
6
←
Memory is allocated
→
180 if (!buffer)
7
←
Assuming 'buffer' is non-null
→
8
←
Taking false branch
→
181 return log_oom()log_oom_internal(LOG_REALM_UDEV, "../src/udev/scsi_id/scsi_id.c"
, 181, __func__);
182
183 *newargv = NULL((void*)0);
184 lineno = 0;
185 for (;;) {
9
←
Loop condition is true. Entering loop body
→
186 vendor_in = model_in = options_in = NULL((void*)0);
187
188 buf = fgets(buffer, MAX_BUFFER_LEN256, f);
189 if (buf == NULL((void*)0))
10
←
Assuming 'buf' is equal to NULL
→
11
←
Taking true branch
→
190 break;
12
←
 Execution continues on line 263
→
191 lineno++;
192 if (buf[strlen(buffer) - 1] != '\n') {
193 log_error("Config file line %d too long", lineno)({ int _level = (((3))), _e = ((0)), _realm = (LOG_REALM_UDEV
); (log_get_max_level_realm(_realm) >= ((_level) & 0x07
)) ? log_internal_realm(((_realm) << 10 | (_level)), _e
, "../src/udev/scsi_id/scsi_id.c", 193, __func__, "Config file line %d too long"
, lineno) : -abs(_e); });
194 break;
195 }
196
197 while (isspace(*buf)((*__ctype_b_loc ())[(int) ((*buf))] & (unsigned short int
) _ISspace))
198 buf++;
199
200 /* blank or all whitespace line */
201 if (*buf == '\0')
202 continue;
203
204 /* comment line */
205 if (*buf == '#')
206 continue;
207
208 str1 = strsep(&buf, "=");
209 if (str1 && strcaseeq(str1, "VENDOR")(strcasecmp((str1),("VENDOR")) == 0)) {
210 str1 = get_value(&buf);
211 if (!str1) {
212 retval = log_oom()log_oom_internal(LOG_REALM_UDEV, "../src/udev/scsi_id/scsi_id.c"
, 212, __func__);
213 break;
214 }
215 vendor_in = str1;
216
217 str1 = strsep(&buf, "=");
218 if (str1 && strcaseeq(str1, "MODEL")(strcasecmp((str1),("MODEL")) == 0)) {
219 str1 = get_value(&buf);
220 if (!str1) {
221 retval = log_oom()log_oom_internal(LOG_REALM_UDEV, "../src/udev/scsi_id/scsi_id.c"
, 221, __func__);
222 break;
223 }
224 model_in = str1;
225 str1 = strsep(&buf, "=");
226 }
227 }
228
229 if (str1 && strcaseeq(str1, "OPTIONS")(strcasecmp((str1),("OPTIONS")) == 0)) {
230 str1 = get_value(&buf);
231 if (!str1) {
232 retval = log_oom()log_oom_internal(LOG_REALM_UDEV, "../src/udev/scsi_id/scsi_id.c"
, 232, __func__);
233 break;
234 }
235 options_in = str1;
236 }
237
238 /*
239 * Only allow: [vendor=foo[,model=bar]]options=stuff
240 */
241 if (!options_in || (!vendor_in && model_in)) {
242 log_error("Error parsing config file line %d '%s'", lineno, buffer)({ int _level = (((3))), _e = ((0)), _realm = (LOG_REALM_UDEV
); (log_get_max_level_realm(_realm) >= ((_level) & 0x07
)) ? log_internal_realm(((_realm) << 10 | (_level)), _e
, "../src/udev/scsi_id/scsi_id.c", 242, __func__, "Error parsing config file line %d '%s'"
, lineno, buffer) : -abs(_e); });
243 retval = -1;
244 break;
245 }
246 if (vendor == NULL((void*)0)) {
247 if (vendor_in == NULL((void*)0))
248 break;
249 } else if (vendor_in &&
250 startswith(vendor, vendor_in) &&
251 (!model_in || startswith(model, model_in))) {
252 /*
253 * Matched vendor and optionally model.
254 *
255 * Note: a short vendor_in or model_in can
256 * give a partial match (that is FOO
257 * matches FOOBAR).
258 */
259 break;
260 }
261 }
262
263 if (retval
12.1
'retval' is equal to 0
 == 0) {
13
←
Taking true branch
→
264 if (vendor_in
13.1
'vendor_in' is equal to NULL
 != NULL((void*)0) || model_in
13.2
'model_in' is equal to NULL
 != NULL((void*)0) ||
14
←
Taking false branch
→
265 options_in
13.3
'options_in' is equal to NULL
 != NULL((void*)0)) {
266 /*
267 * Something matched. Allocate newargv, and store
268 * values found in options_in.
269 */
270 strcpy(buffer, options_in);
271 c = argc_count(buffer) + 2;
272 *newargv = calloc(c, sizeof(**newargv));
273 if (!*newargv)
274 retval = log_oom()log_oom_internal(LOG_REALM_UDEV, "../src/udev/scsi_id/scsi_id.c"
, 274, __func__);
275 else {
276 *argc = c;
277 c = 0;
278 /*
279 * argv[0] at 0 is skipped by getopt, but
280 * store the buffer address there for
281 * later freeing
282 */
283 (*newargv)[c] = buffer;
284 for (c = 1; c < *argc; c++)
285 (*newargv)[c] = strsep(&buffer, " \t");
286 buffer = NULL((void*)0);
287 }
288 } else {
289 /* No matches */
290 retval = 1;
15
←
Potential leak of memory pointed to by 'buffer'
291 }
292 }
293 return retval;
294}
295
296static void help(void) {
297 printf("Usage: %s [OPTION...] DEVICE\n\n"
298 "SCSI device identification.\n\n"
299 " -h --help Print this message\n"
300 " --version Print version of the program\n\n"
301 " -d --device= Device node for SG_IO commands\n"
302 " -f --config= Location of config file\n"
303 " -p --page=0x80|0x83|pre-spc3-83 SCSI page (0x80, 0x83, pre-spc3-83)\n"
304 " -s --sg-version=3|4 Use SGv3 or SGv4\n"
305 " -b --blacklisted Treat device as blacklisted\n"
306 " -g --whitelisted Treat device as whitelisted\n"
307 " -u --replace-whitespace Replace all whitespace by underscores\n"
308 " -v --verbose Verbose logging\n"
309 " -x --export Print values as environment keys\n"
310 , program_invocation_short_name);
311
312}
313
314static int set_options(struct udev *udev,
315 int argc, char **argv,
316 char *maj_min_dev)
317{
318 int option;
319
320 /*
321 * optind is a global extern used by getopt. Since we can call
322 * set_options twice (once for command line, and once for config
323 * file) we have to reset this back to 1.
324 */
325 optind = 1;
326 while ((option = getopt_long(argc, argv, "d:f:gp:uvVxhbs:", options, NULL((void*)0))) >= 0)
327 switch (option) {
328 case 'b':
329 all_good = false0;
330 break;
331
332 case 'd':
333 dev_specified = true1;
334 strscpy(maj_min_dev, MAX_PATH_LEN512, optarg);
335 break;
336
337 case 'f':
338 strscpy(config_file, MAX_PATH_LEN512, optarg);
339 break;
340
341 case 'g':
342 all_good = true1;
343 break;
344
345 case 'h':
346 help();
347 exit(EXIT_SUCCESS0);
348
349 case 'p':
350 if (streq(optarg, "0x80")(strcmp((optarg),("0x80")) == 0))
351 default_page_code = PAGE_80;
352 else if (streq(optarg, "0x83")(strcmp((optarg),("0x83")) == 0))
353 default_page_code = PAGE_83;
354 else if (streq(optarg, "pre-spc3-83")(strcmp((optarg),("pre-spc3-83")) == 0))
355 default_page_code = PAGE_83_PRE_SPC3;
356 else {
357 log_error("Unknown page code '%s'", optarg)({ int _level = (((3))), _e = ((0)), _realm = (LOG_REALM_UDEV
); (log_get_max_level_realm(_realm) >= ((_level) & 0x07
)) ? log_internal_realm(((_realm) << 10 | (_level)), _e
, "../src/udev/scsi_id/scsi_id.c", 357, __func__, "Unknown page code '%s'"
, optarg) : -abs(_e); });
358 return -1;
359 }
360 break;
361
362 case 's':
363 sg_version = atoi(optarg);
364 if (sg_version < 3 || sg_version > 4) {
365 log_error("Unknown SG version '%s'", optarg)({ int _level = (((3))), _e = ((0)), _realm = (LOG_REALM_UDEV
); (log_get_max_level_realm(_realm) >= ((_level) & 0x07
)) ? log_internal_realm(((_realm) << 10 | (_level)), _e
, "../src/udev/scsi_id/scsi_id.c", 365, __func__, "Unknown SG version '%s'"
, optarg) : -abs(_e); });
366 return -1;
367 }
368 break;
369
370 case 'u':
371 reformat_serial = true1;
372 break;
373
374 case 'v':
375 log_set_target(LOG_TARGET_CONSOLE);
376 log_set_max_level(LOG_DEBUG)log_set_max_level_realm(LOG_REALM_UDEV, (7));
377 log_open();
378 break;
379
380 case 'V':
381 printf("%s\n", PACKAGE_VERSION"239");
382 exit(EXIT_SUCCESS0);
383
384 case 'x':
385 export = true1;
386 break;
387
388 case '?':
389 return -1;
390
391 default:
392 assert_not_reached("Unknown option")do { log_assert_failed_unreachable_realm(LOG_REALM_UDEV, ("Unknown option"
), "../src/udev/scsi_id/scsi_id.c", 392, __PRETTY_FUNCTION__)
; } while (0);
393 }
394
395 if (optind < argc && !dev_specified) {
396 dev_specified = true1;
397 strscpy(maj_min_dev, MAX_PATH_LEN512, argv[optind]);
398 }
399
400 return 0;
401}
402
403static int per_dev_options(struct udev *udev,
404 struct scsi_id_device *dev_scsi, int *good_bad, int *page_code)
405{
406 int retval;
407 int newargc;
408 char **newargv = NULL((void*)0);
409 int option;
410
411 *good_bad = all_good;
412 *page_code = default_page_code;
413
414 retval = get_file_options(udev, vendor_str, model_str, &newargc, &newargv);
415
416 optind = 1; /* reset this global extern */
417 while (retval == 0) {
418 option = getopt_long(newargc, newargv, "bgp:", options, NULL((void*)0));
419 if (option == -1)
420 break;
421
422 switch (option) {
423 case 'b':
424 *good_bad = 0;
425 break;
426
427 case 'g':
428 *good_bad = 1;
429 break;
430
431 case 'p':
432 if (streq(optarg, "0x80")(strcmp((optarg),("0x80")) == 0)) {
433 *page_code = PAGE_80;
434 } else if (streq(optarg, "0x83")(strcmp((optarg),("0x83")) == 0)) {
435 *page_code = PAGE_83;
436 } else if (streq(optarg, "pre-spc3-83")(strcmp((optarg),("pre-spc3-83")) == 0)) {
437 *page_code = PAGE_83_PRE_SPC3;
438 } else {
439 log_error("Unknown page code '%s'", optarg)({ int _level = (((3))), _e = ((0)), _realm = (LOG_REALM_UDEV
); (log_get_max_level_realm(_realm) >= ((_level) & 0x07
)) ? log_internal_realm(((_realm) << 10 | (_level)), _e
, "../src/udev/scsi_id/scsi_id.c", 439, __func__, "Unknown page code '%s'"
, optarg) : -abs(_e); });
440 retval = -1;
441 }
442 break;
443
444 default:
445 log_error("Unknown or bad option '%c' (0x%x)", option, option)({ int _level = (((3))), _e = ((0)), _realm = (LOG_REALM_UDEV
); (log_get_max_level_realm(_realm) >= ((_level) & 0x07
)) ? log_internal_realm(((_realm) << 10 | (_level)), _e
, "../src/udev/scsi_id/scsi_id.c", 445, __func__, "Unknown or bad option '%c' (0x%x)"
, option, option) : -abs(_e); });
446 retval = -1;
447 break;
448 }
449 }
450
451 if (newargv) {
452 free(newargv[0]);
453 free(newargv);
454 }
455 return retval;
456}
457
458static int set_inq_values(struct udev *udev, struct scsi_id_device *dev_scsi, const char *path)
459{
460 int retval;
461
462 dev_scsi->use_sg = sg_version;
463
464 retval = scsi_std_inquiry(udev, dev_scsi, path);
465 if (retval)
466 return retval;
467
468 udev_util_encode_string(dev_scsi->vendor, vendor_enc_str, sizeof(vendor_enc_str));
469 udev_util_encode_string(dev_scsi->model, model_enc_str, sizeof(model_enc_str));
470
471 util_replace_whitespace(dev_scsi->vendor, vendor_str, sizeof(vendor_str));
472 util_replace_chars(vendor_str, NULL((void*)0));
473 util_replace_whitespace(dev_scsi->model, model_str, sizeof(model_str));
474 util_replace_chars(model_str, NULL((void*)0));
475 set_type(dev_scsi->type, type_str, sizeof(type_str));
476 util_replace_whitespace(dev_scsi->revision, revision_str, sizeof(revision_str));
477 util_replace_chars(revision_str, NULL((void*)0));
478 return 0;
479}
480
481/*
482 * scsi_id: try to get an id, if one is found, printf it to stdout.
483 * returns a value passed to exit() - 0 if printed an id, else 1.
484 */
485static int scsi_id(struct udev *udev, char *maj_min_dev)
486{
487 struct scsi_id_device dev_scsi = {};
488 int good_dev;
489 int page_code;
490 int retval = 0;
491
492 if (set_inq_values(udev, &dev_scsi, maj_min_dev) < 0) {
493 retval = 1;
494 goto out;
495 }
496
497 /* get per device (vendor + model) options from the config file */
498 per_dev_options(udev, &dev_scsi, &good_dev, &page_code);
499 if (!good_dev) {
500 retval = 1;
501 goto out;
502 }
503
504 /* read serial number from mode pages (no values for optical drives) */
505 scsi_get_serial(udev, &dev_scsi, maj_min_dev, page_code, MAX_SERIAL_LEN256);
506
507 if (export) {
508 char serial_str[MAX_SERIAL_LEN256];
509
510 printf("ID_SCSI=1\n");
511 printf("ID_VENDOR=%s\n", vendor_str);
512 printf("ID_VENDOR_ENC=%s\n", vendor_enc_str);
513 printf("ID_MODEL=%s\n", model_str);
514 printf("ID_MODEL_ENC=%s\n", model_enc_str);
515 printf("ID_REVISION=%s\n", revision_str);
516 printf("ID_TYPE=%s\n", type_str);
517 if (dev_scsi.serial[0] != '\0') {
518 util_replace_whitespace(dev_scsi.serial, serial_str, sizeof(serial_str));
519 util_replace_chars(serial_str, NULL((void*)0));
520 printf("ID_SERIAL=%s\n", serial_str);
521 util_replace_whitespace(dev_scsi.serial_short, serial_str, sizeof(serial_str));
522 util_replace_chars(serial_str, NULL((void*)0));
523 printf("ID_SERIAL_SHORT=%s\n", serial_str);
524 }
525 if (dev_scsi.wwn[0] != '\0') {
526 printf("ID_WWN=0x%s\n", dev_scsi.wwn);
527 if (dev_scsi.wwn_vendor_extension[0] != '\0') {
528 printf("ID_WWN_VENDOR_EXTENSION=0x%s\n", dev_scsi.wwn_vendor_extension);
529 printf("ID_WWN_WITH_EXTENSION=0x%s%s\n", dev_scsi.wwn, dev_scsi.wwn_vendor_extension);
530 } else
531 printf("ID_WWN_WITH_EXTENSION=0x%s\n", dev_scsi.wwn);
532 }
533 if (dev_scsi.tgpt_group[0] != '\0')
534 printf("ID_TARGET_PORT=%s\n", dev_scsi.tgpt_group);
535 if (dev_scsi.unit_serial_number[0] != '\0')
536 printf("ID_SCSI_SERIAL=%s\n", dev_scsi.unit_serial_number);
537 goto out;
538 }
539
540 if (dev_scsi.serial[0] == '\0') {
541 retval = 1;
542 goto out;
543 }
544
545 if (reformat_serial) {
546 char serial_str[MAX_SERIAL_LEN256];
547
548 util_replace_whitespace(dev_scsi.serial, serial_str, sizeof(serial_str));
549 util_replace_chars(serial_str, NULL((void*)0));
550 printf("%s\n", serial_str);
551 goto out;
552 }
553
554 printf("%s\n", dev_scsi.serial);
555out:
556 return retval;
557}
558
559int main(int argc, char **argv) {
560 _cleanup_(udev_unrefp)__attribute__((cleanup(udev_unrefp))) struct udev *udev;
561 int retval = 0;
562 char maj_min_dev[MAX_PATH_LEN512];
563 int newargc;
564 char **newargv = NULL((void*)0);
565
566 log_set_target(LOG_TARGET_AUTO);
567 udev_parse_config();
568 log_parse_environment()log_parse_environment_realm(LOG_REALM_UDEV);
569 log_open();
570
571 udev = udev_new();
572 if (udev == NULL((void*)0))
1
Assuming 'udev' is not equal to NULL
→
2
←
Taking false branch
→
573 goto exit;
574
575 /*
576 * Get config file options.
577 */
578 retval = get_file_options(udev, NULL((void*)0), NULL((void*)0), &newargc, &newargv);
3
←
Calling 'get_file_options'
→
579 if (retval < 0) {
580 retval = 1;
581 goto exit;
582 }
583 if (retval == 0) {
584 assert(newargv)do { if ((__builtin_expect(!!(!(newargv)),0))) log_assert_failed_realm
(LOG_REALM_UDEV, ("newargv"), "../src/udev/scsi_id/scsi_id.c"
, 584, __PRETTY_FUNCTION__); } while (0);
585
586 if (set_options(udev, newargc, newargv, maj_min_dev) < 0) {
587 retval = 2;
588 goto exit;
589 }
590 }
591
592 /*
593 * Get command line options (overriding any config file settings).
594 */
595 if (set_options(udev, argc, argv, maj_min_dev) < 0)
596 exit(EXIT_FAILURE1);
597
598 if (!dev_specified) {
599 log_error("No device specified.")({ int _level = (((3))), _e = ((0)), _realm = (LOG_REALM_UDEV
); (log_get_max_level_realm(_realm) >= ((_level) & 0x07
)) ? log_internal_realm(((_realm) << 10 | (_level)), _e
, "../src/udev/scsi_id/scsi_id.c", 599, __func__, "No device specified."
) : -abs(_e); });
600 retval = 1;
601 goto exit;
602 }
603
604 retval = scsi_id(udev, maj_min_dev);
605
606exit:
607 if (newargv) {
608 free(newargv[0]);
609 free(newargv);
610 }
611 log_close();
612 return retval;
613}