Commit | Line | Data |
---|---|---|
07800601 | 1 | /* |
5f9273d6 NK |
2 | * config.c |
3 | * | |
4 | * Helper functions for parsing config items. | |
5 | * Originally copied from GIT source. | |
07800601 IM |
6 | * |
7 | * Copyright (C) Linus Torvalds, 2005 | |
8 | * Copyright (C) Johannes Schindelin, 2005 | |
9 | * | |
10 | */ | |
11 | #include "util.h" | |
12 | #include "cache.h" | |
4b6ab94e | 13 | #include <subcmd/exec-cmd.h> |
0b93da17 | 14 | #include "util/hist.h" /* perf_hist_config */ |
aa61fd05 | 15 | #include "util/llvm-utils.h" /* perf_llvm_config */ |
20105ca1 | 16 | #include "config.h" |
07800601 IM |
17 | |
18 | #define MAXNAME (256) | |
19 | ||
45de34bb SE |
20 | #define DEBUG_CACHE_DIR ".debug" |
21 | ||
22 | ||
23 | char buildid_dir[MAXPATHLEN]; /* root dir for buildid, binary cache */ | |
24 | ||
07800601 IM |
25 | static FILE *config_file; |
26 | static const char *config_file_name; | |
27 | static int config_linenr; | |
28 | static int config_file_eof; | |
07800601 | 29 | |
c7ac2417 | 30 | const char *config_exclusive_filename; |
07800601 IM |
31 | |
32 | static int get_next_char(void) | |
33 | { | |
34 | int c; | |
35 | FILE *f; | |
36 | ||
37 | c = '\n'; | |
38 | if ((f = config_file) != NULL) { | |
39 | c = fgetc(f); | |
40 | if (c == '\r') { | |
41 | /* DOS like systems */ | |
42 | c = fgetc(f); | |
43 | if (c != '\n') { | |
44 | ungetc(c, f); | |
45 | c = '\r'; | |
46 | } | |
47 | } | |
48 | if (c == '\n') | |
49 | config_linenr++; | |
50 | if (c == EOF) { | |
51 | config_file_eof = 1; | |
52 | c = '\n'; | |
53 | } | |
54 | } | |
55 | return c; | |
56 | } | |
57 | ||
58 | static char *parse_value(void) | |
59 | { | |
60 | static char value[1024]; | |
f37a291c IM |
61 | int quote = 0, comment = 0, space = 0; |
62 | size_t len = 0; | |
07800601 IM |
63 | |
64 | for (;;) { | |
65 | int c = get_next_char(); | |
f37a291c | 66 | |
07800601 IM |
67 | if (len >= sizeof(value) - 1) |
68 | return NULL; | |
69 | if (c == '\n') { | |
70 | if (quote) | |
71 | return NULL; | |
72 | value[len] = 0; | |
73 | return value; | |
74 | } | |
75 | if (comment) | |
76 | continue; | |
77 | if (isspace(c) && !quote) { | |
78 | space = 1; | |
79 | continue; | |
80 | } | |
81 | if (!quote) { | |
82 | if (c == ';' || c == '#') { | |
83 | comment = 1; | |
84 | continue; | |
85 | } | |
86 | } | |
87 | if (space) { | |
88 | if (len) | |
89 | value[len++] = ' '; | |
90 | space = 0; | |
91 | } | |
92 | if (c == '\\') { | |
93 | c = get_next_char(); | |
94 | switch (c) { | |
95 | case '\n': | |
96 | continue; | |
97 | case 't': | |
98 | c = '\t'; | |
99 | break; | |
100 | case 'b': | |
101 | c = '\b'; | |
102 | break; | |
103 | case 'n': | |
104 | c = '\n'; | |
105 | break; | |
106 | /* Some characters escape as themselves */ | |
107 | case '\\': case '"': | |
108 | break; | |
109 | /* Reject unknown escape sequences */ | |
110 | default: | |
111 | return NULL; | |
112 | } | |
113 | value[len++] = c; | |
114 | continue; | |
115 | } | |
116 | if (c == '"') { | |
117 | quote = 1-quote; | |
118 | continue; | |
119 | } | |
120 | value[len++] = c; | |
121 | } | |
122 | } | |
123 | ||
124 | static inline int iskeychar(int c) | |
125 | { | |
8dc7c651 | 126 | return isalnum(c) || c == '-' || c == '_'; |
07800601 IM |
127 | } |
128 | ||
129 | static int get_value(config_fn_t fn, void *data, char *name, unsigned int len) | |
130 | { | |
131 | int c; | |
132 | char *value; | |
133 | ||
134 | /* Get the full name */ | |
135 | for (;;) { | |
136 | c = get_next_char(); | |
137 | if (config_file_eof) | |
138 | break; | |
139 | if (!iskeychar(c)) | |
140 | break; | |
45de34bb | 141 | name[len++] = c; |
07800601 IM |
142 | if (len >= MAXNAME) |
143 | return -1; | |
144 | } | |
145 | name[len] = 0; | |
146 | while (c == ' ' || c == '\t') | |
147 | c = get_next_char(); | |
148 | ||
149 | value = NULL; | |
150 | if (c != '\n') { | |
151 | if (c != '=') | |
152 | return -1; | |
153 | value = parse_value(); | |
154 | if (!value) | |
155 | return -1; | |
156 | } | |
157 | return fn(name, value, data); | |
158 | } | |
159 | ||
160 | static int get_extended_base_var(char *name, int baselen, int c) | |
161 | { | |
162 | do { | |
163 | if (c == '\n') | |
164 | return -1; | |
165 | c = get_next_char(); | |
166 | } while (isspace(c)); | |
167 | ||
168 | /* We require the format to be '[base "extension"]' */ | |
169 | if (c != '"') | |
170 | return -1; | |
171 | name[baselen++] = '.'; | |
172 | ||
173 | for (;;) { | |
83a0944f IM |
174 | int ch = get_next_char(); |
175 | ||
176 | if (ch == '\n') | |
07800601 | 177 | return -1; |
83a0944f | 178 | if (ch == '"') |
07800601 | 179 | break; |
83a0944f IM |
180 | if (ch == '\\') { |
181 | ch = get_next_char(); | |
182 | if (ch == '\n') | |
07800601 IM |
183 | return -1; |
184 | } | |
83a0944f | 185 | name[baselen++] = ch; |
07800601 IM |
186 | if (baselen > MAXNAME / 2) |
187 | return -1; | |
188 | } | |
189 | ||
190 | /* Final ']' */ | |
191 | if (get_next_char() != ']') | |
192 | return -1; | |
193 | return baselen; | |
194 | } | |
195 | ||
196 | static int get_base_var(char *name) | |
197 | { | |
198 | int baselen = 0; | |
199 | ||
200 | for (;;) { | |
201 | int c = get_next_char(); | |
202 | if (config_file_eof) | |
203 | return -1; | |
204 | if (c == ']') | |
205 | return baselen; | |
206 | if (isspace(c)) | |
207 | return get_extended_base_var(name, baselen, c); | |
208 | if (!iskeychar(c) && c != '.') | |
209 | return -1; | |
210 | if (baselen > MAXNAME / 2) | |
211 | return -1; | |
212 | name[baselen++] = tolower(c); | |
213 | } | |
214 | } | |
215 | ||
216 | static int perf_parse_file(config_fn_t fn, void *data) | |
217 | { | |
218 | int comment = 0; | |
219 | int baselen = 0; | |
220 | static char var[MAXNAME]; | |
221 | ||
222 | /* U+FEFF Byte Order Mark in UTF8 */ | |
223 | static const unsigned char *utf8_bom = (unsigned char *) "\xef\xbb\xbf"; | |
224 | const unsigned char *bomptr = utf8_bom; | |
225 | ||
226 | for (;;) { | |
49757c9c JO |
227 | int line, c = get_next_char(); |
228 | ||
07800601 IM |
229 | if (bomptr && *bomptr) { |
230 | /* We are at the file beginning; skip UTF8-encoded BOM | |
231 | * if present. Sane editors won't put this in on their | |
232 | * own, but e.g. Windows Notepad will do it happily. */ | |
233 | if ((unsigned char) c == *bomptr) { | |
234 | bomptr++; | |
235 | continue; | |
236 | } else { | |
237 | /* Do not tolerate partial BOM. */ | |
238 | if (bomptr != utf8_bom) | |
239 | break; | |
240 | /* No BOM at file beginning. Cool. */ | |
241 | bomptr = NULL; | |
242 | } | |
243 | } | |
244 | if (c == '\n') { | |
245 | if (config_file_eof) | |
246 | return 0; | |
247 | comment = 0; | |
248 | continue; | |
249 | } | |
250 | if (comment || isspace(c)) | |
251 | continue; | |
252 | if (c == '#' || c == ';') { | |
253 | comment = 1; | |
254 | continue; | |
255 | } | |
256 | if (c == '[') { | |
257 | baselen = get_base_var(var); | |
258 | if (baselen <= 0) | |
259 | break; | |
260 | var[baselen++] = '.'; | |
261 | var[baselen] = 0; | |
262 | continue; | |
263 | } | |
264 | if (!isalpha(c)) | |
265 | break; | |
266 | var[baselen] = tolower(c); | |
49757c9c JO |
267 | |
268 | /* | |
269 | * The get_value function might or might not reach the '\n', | |
270 | * so saving the current line number for error reporting. | |
271 | */ | |
272 | line = config_linenr; | |
273 | if (get_value(fn, data, var, baselen+1) < 0) { | |
274 | config_linenr = line; | |
07800601 | 275 | break; |
49757c9c | 276 | } |
07800601 IM |
277 | } |
278 | die("bad config file line %d in %s", config_linenr, config_file_name); | |
279 | } | |
280 | ||
281 | static int parse_unit_factor(const char *end, unsigned long *val) | |
282 | { | |
283 | if (!*end) | |
284 | return 1; | |
285 | else if (!strcasecmp(end, "k")) { | |
286 | *val *= 1024; | |
287 | return 1; | |
288 | } | |
289 | else if (!strcasecmp(end, "m")) { | |
290 | *val *= 1024 * 1024; | |
291 | return 1; | |
292 | } | |
293 | else if (!strcasecmp(end, "g")) { | |
294 | *val *= 1024 * 1024 * 1024; | |
295 | return 1; | |
296 | } | |
297 | return 0; | |
298 | } | |
299 | ||
94c0655f JO |
300 | static int perf_parse_llong(const char *value, long long *ret) |
301 | { | |
302 | if (value && *value) { | |
303 | char *end; | |
304 | long long val = strtoll(value, &end, 0); | |
305 | unsigned long factor = 1; | |
306 | ||
307 | if (!parse_unit_factor(end, &factor)) | |
308 | return 0; | |
309 | *ret = val * factor; | |
310 | return 1; | |
311 | } | |
312 | return 0; | |
313 | } | |
314 | ||
07800601 IM |
315 | static int perf_parse_long(const char *value, long *ret) |
316 | { | |
317 | if (value && *value) { | |
318 | char *end; | |
319 | long val = strtol(value, &end, 0); | |
320 | unsigned long factor = 1; | |
321 | if (!parse_unit_factor(end, &factor)) | |
322 | return 0; | |
323 | *ret = val * factor; | |
324 | return 1; | |
325 | } | |
326 | return 0; | |
327 | } | |
328 | ||
07800601 IM |
329 | static void die_bad_config(const char *name) |
330 | { | |
331 | if (config_file_name) | |
332 | die("bad config value for '%s' in %s", name, config_file_name); | |
333 | die("bad config value for '%s'", name); | |
334 | } | |
335 | ||
94c0655f JO |
336 | u64 perf_config_u64(const char *name, const char *value) |
337 | { | |
338 | long long ret = 0; | |
339 | ||
340 | if (!perf_parse_llong(value, &ret)) | |
341 | die_bad_config(name); | |
342 | return (u64) ret; | |
343 | } | |
344 | ||
07800601 IM |
345 | int perf_config_int(const char *name, const char *value) |
346 | { | |
347 | long ret = 0; | |
348 | if (!perf_parse_long(value, &ret)) | |
349 | die_bad_config(name); | |
350 | return ret; | |
351 | } | |
352 | ||
a41794cd | 353 | static int perf_config_bool_or_int(const char *name, const char *value, int *is_bool) |
07800601 IM |
354 | { |
355 | *is_bool = 1; | |
356 | if (!value) | |
357 | return 1; | |
358 | if (!*value) | |
359 | return 0; | |
360 | if (!strcasecmp(value, "true") || !strcasecmp(value, "yes") || !strcasecmp(value, "on")) | |
361 | return 1; | |
362 | if (!strcasecmp(value, "false") || !strcasecmp(value, "no") || !strcasecmp(value, "off")) | |
363 | return 0; | |
364 | *is_bool = 0; | |
365 | return perf_config_int(name, value); | |
366 | } | |
367 | ||
368 | int perf_config_bool(const char *name, const char *value) | |
369 | { | |
370 | int discard; | |
371 | return !!perf_config_bool_or_int(name, value, &discard); | |
372 | } | |
373 | ||
45de34bb SE |
374 | const char *perf_config_dirname(const char *name, const char *value) |
375 | { | |
376 | if (!name) | |
377 | return NULL; | |
378 | return value; | |
379 | } | |
380 | ||
9cb5987c TS |
381 | static int perf_buildid_config(const char *var, const char *value) |
382 | { | |
383 | /* same dir for all commands */ | |
384 | if (!strcmp(var, "buildid.dir")) { | |
d8e28654 | 385 | const char *dir = perf_config_dirname(var, value); |
9cb5987c | 386 | |
d8e28654 | 387 | if (!dir) |
9cb5987c | 388 | return -1; |
d8e28654 | 389 | strncpy(buildid_dir, dir, MAXPATHLEN-1); |
9cb5987c TS |
390 | buildid_dir[MAXPATHLEN-1] = '\0'; |
391 | } | |
392 | ||
393 | return 0; | |
394 | } | |
395 | ||
1d037ca1 IT |
396 | static int perf_default_core_config(const char *var __maybe_unused, |
397 | const char *value __maybe_unused) | |
07800601 | 398 | { |
395cf969 | 399 | /* Add other config variables here. */ |
07800601 IM |
400 | return 0; |
401 | } | |
402 | ||
c8302367 JO |
403 | static int perf_ui_config(const char *var, const char *value) |
404 | { | |
405 | /* Add other config variables here. */ | |
406 | if (!strcmp(var, "ui.show-headers")) { | |
407 | symbol_conf.show_hist_headers = perf_config_bool(var, value); | |
408 | return 0; | |
409 | } | |
410 | return 0; | |
411 | } | |
412 | ||
1d037ca1 IT |
413 | int perf_default_config(const char *var, const char *value, |
414 | void *dummy __maybe_unused) | |
07800601 IM |
415 | { |
416 | if (!prefixcmp(var, "core.")) | |
417 | return perf_default_core_config(var, value); | |
418 | ||
0b93da17 NK |
419 | if (!prefixcmp(var, "hist.")) |
420 | return perf_hist_config(var, value); | |
421 | ||
c8302367 JO |
422 | if (!prefixcmp(var, "ui.")) |
423 | return perf_ui_config(var, value); | |
424 | ||
2b9240ca NK |
425 | if (!prefixcmp(var, "call-graph.")) |
426 | return perf_callchain_config(var, value); | |
427 | ||
aa61fd05 WN |
428 | if (!prefixcmp(var, "llvm.")) |
429 | return perf_llvm_config(var, value); | |
430 | ||
9cb5987c TS |
431 | if (!prefixcmp(var, "buildid.")) |
432 | return perf_buildid_config(var, value); | |
433 | ||
395cf969 | 434 | /* Add other config variables here. */ |
07800601 IM |
435 | return 0; |
436 | } | |
437 | ||
a41794cd | 438 | static int perf_config_from_file(config_fn_t fn, const char *filename, void *data) |
07800601 IM |
439 | { |
440 | int ret; | |
441 | FILE *f = fopen(filename, "r"); | |
442 | ||
443 | ret = -1; | |
444 | if (f) { | |
445 | config_file = f; | |
446 | config_file_name = filename; | |
447 | config_linenr = 1; | |
448 | config_file_eof = 0; | |
449 | ret = perf_parse_file(fn, data); | |
450 | fclose(f); | |
451 | config_file_name = NULL; | |
452 | } | |
453 | return ret; | |
454 | } | |
455 | ||
c7ac2417 | 456 | const char *perf_etc_perfconfig(void) |
07800601 IM |
457 | { |
458 | static const char *system_wide; | |
459 | if (!system_wide) | |
460 | system_wide = system_path(ETC_PERFCONFIG); | |
461 | return system_wide; | |
462 | } | |
463 | ||
464 | static int perf_env_bool(const char *k, int def) | |
465 | { | |
466 | const char *v = getenv(k); | |
467 | return v ? perf_config_bool(k, v) : def; | |
468 | } | |
469 | ||
a41794cd | 470 | static int perf_config_system(void) |
07800601 IM |
471 | { |
472 | return !perf_env_bool("PERF_CONFIG_NOSYSTEM", 0); | |
473 | } | |
474 | ||
a41794cd | 475 | static int perf_config_global(void) |
07800601 IM |
476 | { |
477 | return !perf_env_bool("PERF_CONFIG_NOGLOBAL", 0); | |
478 | } | |
479 | ||
480 | int perf_config(config_fn_t fn, void *data) | |
481 | { | |
482 | int ret = 0, found = 0; | |
07800601 IM |
483 | const char *home = NULL; |
484 | ||
485 | /* Setting $PERF_CONFIG makes perf read _only_ the given config file. */ | |
486 | if (config_exclusive_filename) | |
487 | return perf_config_from_file(fn, config_exclusive_filename, data); | |
488 | if (perf_config_system() && !access(perf_etc_perfconfig(), R_OK)) { | |
489 | ret += perf_config_from_file(fn, perf_etc_perfconfig(), | |
490 | data); | |
491 | found += 1; | |
492 | } | |
493 | ||
494 | home = getenv("HOME"); | |
495 | if (perf_config_global() && home) { | |
496 | char *user_config = strdup(mkpath("%s/.perfconfig", home)); | |
069e3725 ACM |
497 | struct stat st; |
498 | ||
499 | if (user_config == NULL) { | |
500 | warning("Not enough memory to process %s/.perfconfig, " | |
501 | "ignoring it.", home); | |
502 | goto out; | |
503 | } | |
504 | ||
505 | if (stat(user_config, &st) < 0) | |
506 | goto out_free; | |
507 | ||
508 | if (st.st_uid && (st.st_uid != geteuid())) { | |
509 | warning("File %s not owned by current user or root, " | |
510 | "ignoring it.", user_config); | |
511 | goto out_free; | |
07800601 | 512 | } |
069e3725 ACM |
513 | |
514 | if (!st.st_size) | |
515 | goto out_free; | |
516 | ||
517 | ret += perf_config_from_file(fn, user_config, data); | |
518 | found += 1; | |
519 | out_free: | |
07800601 IM |
520 | free(user_config); |
521 | } | |
069e3725 | 522 | out: |
07800601 IM |
523 | if (found == 0) |
524 | return -1; | |
525 | return ret; | |
526 | } | |
527 | ||
20105ca1 TS |
528 | static struct perf_config_section *find_section(struct list_head *sections, |
529 | const char *section_name) | |
530 | { | |
531 | struct perf_config_section *section; | |
532 | ||
533 | list_for_each_entry(section, sections, node) | |
534 | if (!strcmp(section->name, section_name)) | |
535 | return section; | |
536 | ||
537 | return NULL; | |
538 | } | |
539 | ||
540 | static struct perf_config_item *find_config_item(const char *name, | |
541 | struct perf_config_section *section) | |
542 | { | |
543 | struct perf_config_item *item; | |
544 | ||
545 | list_for_each_entry(item, §ion->items, node) | |
546 | if (!strcmp(item->name, name)) | |
547 | return item; | |
548 | ||
549 | return NULL; | |
550 | } | |
551 | ||
552 | static struct perf_config_section *add_section(struct list_head *sections, | |
553 | const char *section_name) | |
554 | { | |
555 | struct perf_config_section *section = zalloc(sizeof(*section)); | |
556 | ||
557 | if (!section) | |
558 | return NULL; | |
559 | ||
560 | INIT_LIST_HEAD(§ion->items); | |
561 | section->name = strdup(section_name); | |
562 | if (!section->name) { | |
563 | pr_debug("%s: strdup failed\n", __func__); | |
564 | free(section); | |
565 | return NULL; | |
566 | } | |
567 | ||
568 | list_add_tail(§ion->node, sections); | |
569 | return section; | |
570 | } | |
571 | ||
572 | static struct perf_config_item *add_config_item(struct perf_config_section *section, | |
573 | const char *name) | |
574 | { | |
575 | struct perf_config_item *item = zalloc(sizeof(*item)); | |
576 | ||
577 | if (!item) | |
578 | return NULL; | |
579 | ||
580 | item->name = strdup(name); | |
581 | if (!item->name) { | |
582 | pr_debug("%s: strdup failed\n", __func__); | |
583 | free(item); | |
584 | return NULL; | |
585 | } | |
586 | ||
587 | list_add_tail(&item->node, §ion->items); | |
588 | return item; | |
589 | } | |
590 | ||
591 | static int set_value(struct perf_config_item *item, const char *value) | |
592 | { | |
593 | char *val = strdup(value); | |
594 | ||
595 | if (!val) | |
596 | return -1; | |
597 | ||
598 | zfree(&item->value); | |
599 | item->value = val; | |
600 | return 0; | |
601 | } | |
602 | ||
603 | static int collect_config(const char *var, const char *value, | |
604 | void *perf_config_set) | |
605 | { | |
606 | int ret = -1; | |
607 | char *ptr, *key; | |
608 | char *section_name, *name; | |
609 | struct perf_config_section *section = NULL; | |
610 | struct perf_config_item *item = NULL; | |
611 | struct perf_config_set *set = perf_config_set; | |
612 | struct list_head *sections = &set->sections; | |
613 | ||
614 | key = ptr = strdup(var); | |
615 | if (!key) { | |
616 | pr_debug("%s: strdup failed\n", __func__); | |
617 | return -1; | |
618 | } | |
619 | ||
620 | section_name = strsep(&ptr, "."); | |
621 | name = ptr; | |
622 | if (name == NULL || value == NULL) | |
623 | goto out_free; | |
624 | ||
625 | section = find_section(sections, section_name); | |
626 | if (!section) { | |
627 | section = add_section(sections, section_name); | |
628 | if (!section) | |
629 | goto out_free; | |
630 | } | |
631 | ||
632 | item = find_config_item(name, section); | |
633 | if (!item) { | |
634 | item = add_config_item(section, name); | |
635 | if (!item) | |
636 | goto out_free; | |
637 | } | |
638 | ||
639 | ret = set_value(item, value); | |
640 | return ret; | |
641 | ||
642 | out_free: | |
643 | free(key); | |
644 | perf_config_set__delete(set); | |
645 | return -1; | |
646 | } | |
647 | ||
648 | struct perf_config_set *perf_config_set__new(void) | |
649 | { | |
650 | struct perf_config_set *set = zalloc(sizeof(*set)); | |
651 | ||
652 | if (set) { | |
653 | INIT_LIST_HEAD(&set->sections); | |
654 | perf_config(collect_config, set); | |
655 | } | |
656 | ||
657 | return set; | |
658 | } | |
659 | ||
660 | static void perf_config_item__delete(struct perf_config_item *item) | |
661 | { | |
662 | zfree(&item->name); | |
663 | zfree(&item->value); | |
664 | free(item); | |
665 | } | |
666 | ||
667 | static void perf_config_section__purge(struct perf_config_section *section) | |
668 | { | |
669 | struct perf_config_item *item, *tmp; | |
670 | ||
671 | list_for_each_entry_safe(item, tmp, §ion->items, node) { | |
672 | list_del_init(&item->node); | |
673 | perf_config_item__delete(item); | |
674 | } | |
675 | } | |
676 | ||
677 | static void perf_config_section__delete(struct perf_config_section *section) | |
678 | { | |
679 | perf_config_section__purge(section); | |
680 | zfree(§ion->name); | |
681 | free(section); | |
682 | } | |
683 | ||
684 | static void perf_config_set__purge(struct perf_config_set *set) | |
685 | { | |
686 | struct perf_config_section *section, *tmp; | |
687 | ||
688 | list_for_each_entry_safe(section, tmp, &set->sections, node) { | |
689 | list_del_init(§ion->node); | |
690 | perf_config_section__delete(section); | |
691 | } | |
692 | } | |
693 | ||
694 | void perf_config_set__delete(struct perf_config_set *set) | |
695 | { | |
696 | perf_config_set__purge(set); | |
697 | free(set); | |
698 | } | |
699 | ||
07800601 IM |
700 | /* |
701 | * Call this to report error for your variable that should not | |
702 | * get a boolean value (i.e. "[my] var" means "true"). | |
703 | */ | |
704 | int config_error_nonbool(const char *var) | |
705 | { | |
706 | return error("Missing value for '%s'", var); | |
707 | } | |
45de34bb | 708 | |
99ce8e9f | 709 | void set_buildid_dir(const char *dir) |
45de34bb | 710 | { |
99ce8e9f JO |
711 | if (dir) |
712 | scnprintf(buildid_dir, MAXPATHLEN-1, "%s", dir); | |
45de34bb | 713 | |
45de34bb SE |
714 | /* default to $HOME/.debug */ |
715 | if (buildid_dir[0] == '\0') { | |
37194f44 TS |
716 | char *home = getenv("HOME"); |
717 | ||
718 | if (home) { | |
45de34bb | 719 | snprintf(buildid_dir, MAXPATHLEN-1, "%s/%s", |
37194f44 | 720 | home, DEBUG_CACHE_DIR); |
45de34bb SE |
721 | } else { |
722 | strncpy(buildid_dir, DEBUG_CACHE_DIR, MAXPATHLEN-1); | |
723 | } | |
724 | buildid_dir[MAXPATHLEN-1] = '\0'; | |
725 | } | |
726 | /* for communicating with external commands */ | |
727 | setenv("PERF_BUILDID_DIR", buildid_dir, 1); | |
728 | } |