Make --loglevel and --S work.
[adu.git] / adu.c
1 #include "adu.h"
2 #include <dirent.h> /* readdir() */
3
4 #include "gcc-compat.h"
5 #include "cmdline.h"
6 #include "osl.h"
7 #include "fd.h"
8 #include "hash.h"
9 #include "string.h"
10 #include "error.h"
11
12 DEFINE_ERRLIST;
13
14 #define DATABASE_DIR "/tmp/adu"
15 #define UID_LIST DATABASE_DIR "/" "uid_list"
16
17 /** Command line and config file options. */
18 static struct gengetopt_args_info conf;
19
20 struct user_info {
21 uint32_t uid;
22 struct osl_table *table;
23 uint64_t files;
24 uint64_t bytes;
25 uint64_t dirs;
26 struct osl_table_description *desc;
27 };
28
29 static struct user_info *uid_hash_table;
30
31 /** evaluates to 1 if x < y, to -1 if x > y and to 0 if x == y */
32 #define NUM_COMPARE(x, y) ((int)((x) < (y)) - (int)((x) > (y)))
33
34
35 /**
36 * The log function.
37 *
38 * \param ll Loglevel.
39 * \param fml Usual format string.
40 *
41 * All XXX_LOG() macros use this function.
42 */
43 __printf_2_3 void __log(int ll, const char* fmt,...)
44 {
45 va_list argp;
46 FILE *outfd;
47 struct tm *tm;
48 time_t t1;
49 char str[255] = "";
50
51 if (ll < conf.loglevel_arg)
52 return;
53 outfd = stderr;
54 time(&t1);
55 tm = localtime(&t1);
56 strftime(str, sizeof(str), "%b %d %H:%M:%S", tm);
57 fprintf(outfd, "%s ", str);
58 va_start(argp, fmt);
59 vfprintf(outfd, fmt, argp);
60 va_end(argp);
61 }
62
63 /**
64 * Compare the size of two directories
65 *
66 * \param obj1 Pointer to the first object.
67 * \param obj2 Pointer to the second object.
68 *
69 * This function first compares the size values as usual integers. If they compare as
70 * equal, the address of \a obj1 and \a obj2 are compared. So this compare function
71 * returns zero if and only if \a obj1 and \a obj2 point to the same memory area.
72 */
73 static int size_compare(const struct osl_object *obj1, const struct osl_object *obj2)
74 {
75 uint64_t d1 = *(uint64_t *)obj1->data;
76 uint64_t d2 = *(uint64_t *)obj2->data;
77 int ret = NUM_COMPARE(d2, d1);
78
79 if (ret)
80 return ret;
81 //INFO_LOG("addresses: %p, %p\n", obj1->data, obj2->data);
82 return NUM_COMPARE(obj2->data, obj1->data);
83 }
84
85 /**
86 * Compare two osl objects of string type.
87 *
88 * \param obj1 Pointer to the first object.
89 * \param obj2 Pointer to the second object.
90 *
91 * In any case, only \p MIN(obj1->size, obj2->size) characters of each string
92 * are taken into account.
93 *
94 * \return It returns an integer less than, equal to, or greater than zero if
95 * \a obj1 is found, respectively, to be less than, to match, or be greater
96 * than obj2.
97 *
98 * \sa strcmp(3), strncmp(3), osl_compare_func.
99 */
100 static int string_compare(const struct osl_object *obj1,
101 const struct osl_object *obj2)
102 {
103 const char *str1 = (const char *)obj1->data;
104 const char *str2 = (const char *)obj2->data;
105 return strncmp(str1, str2, MIN(obj1->size, obj2->size));
106 }
107
108 /**
109 * Compare two osl objects pointing to unsigned integers of 64 bit size.
110 *
111 * \param obj1 Pointer to the first integer.
112 * \param obj2 Pointer to the second integer.
113 *
114 * \return The values required for an osl compare function.
115 *
116 * \sa osl_compare_func, osl_hash_compare().
117 */
118 static int uint64_compare(const struct osl_object *obj1,
119 const struct osl_object *obj2)
120 {
121 uint64_t d1 = read_u64((const char *)obj1->data);
122 uint64_t d2 = read_u64((const char *)obj2->data);
123
124 if (d1 < d2)
125 return 1;
126 if (d1 > d2)
127 return -1;
128 return 0;
129 }
130
131 /** The columns of the directory table. */
132 enum dir_table_columns {
133 /** The name of the directory. */
134 DT_NAME,
135 /** The dir count number. */
136 DT_NUM,
137 /** The number of bytes of all regular files. */
138 DT_BYTES,
139 /** The number of all regular files. */
140 DT_FILES,
141 /** Number of columns in this table. */
142 NUM_DT_COLUMNS
143 };
144
145 static struct osl_column_description dir_table_cols[] = {
146 [DT_NAME] = {
147 .storage_type = OSL_MAPPED_STORAGE,
148 .storage_flags = OSL_RBTREE | OSL_UNIQUE,
149 .name = "dir",
150 .compare_function = string_compare,
151 },
152 [DT_NUM] = {
153 .storage_type = OSL_MAPPED_STORAGE,
154 .storage_flags = OSL_RBTREE | OSL_FIXED_SIZE | OSL_UNIQUE,
155 .name = "num",
156 .compare_function = uint64_compare,
157 .data_size = sizeof(uint64_t)
158 },
159 [DT_BYTES] = {
160 .storage_type = OSL_MAPPED_STORAGE,
161 .storage_flags = OSL_RBTREE | OSL_FIXED_SIZE,
162 .compare_function = size_compare,
163 .name = "num_bytes",
164 .data_size = sizeof(uint64_t)
165 },
166 [DT_FILES] = {
167 .storage_type = OSL_MAPPED_STORAGE,
168 .storage_flags = OSL_RBTREE | OSL_FIXED_SIZE,
169 .compare_function = size_compare,
170 .name = "num_files",
171 .data_size = sizeof(uint64_t)
172 }
173 };
174
175 static struct osl_table_description dir_table_desc = {
176 .name = "dir_table",
177 .num_columns = NUM_DT_COLUMNS,
178 .flags = 0,
179 .column_descriptions = dir_table_cols,
180 .dir = DATABASE_DIR
181 };
182
183 /** The columns of the id table. */
184 enum user_table_columns {
185 /** The numer of the directory. */
186 UT_DIR_NUM,
187 /** The number of bytes of all regular files in this dir owned by this id. */
188 UT_BYTES,
189 /** The number of files in this dir owned by this id. */
190 UT_FILES,
191 /** Number of columns in this table. */
192 NUM_UT_COLUMNS
193 };
194
195 static struct osl_column_description user_table_cols[] = {
196 [UT_DIR_NUM] = {
197 .storage_type = OSL_MAPPED_STORAGE,
198 .storage_flags = OSL_RBTREE | OSL_FIXED_SIZE | OSL_UNIQUE,
199 .name = "dir_num",
200 .compare_function = uint64_compare,
201 .data_size = sizeof(uint64_t)
202 },
203 [UT_BYTES] = {
204 .storage_type = OSL_MAPPED_STORAGE,
205 .storage_flags = OSL_RBTREE | OSL_FIXED_SIZE,
206 .compare_function = size_compare,
207 .name = "num_bytes",
208 .data_size = sizeof(uint64_t)
209 },
210 [UT_FILES] = {
211 .storage_type = OSL_MAPPED_STORAGE,
212 .storage_flags = OSL_RBTREE | OSL_FIXED_SIZE,
213 .compare_function = size_compare,
214 .name = "num_files",
215 .data_size = sizeof(uint64_t)
216 },
217 };
218
219 static struct osl_table *dir_table;
220
221 static int add_directory(char *dirname, uint64_t dir_num, uint64_t *dir_size,
222 uint64_t *dir_files)
223 {
224 struct osl_object dir_objects[NUM_DT_COLUMNS];
225
226 INFO_LOG("adding #%llu: %s\n", (long long unsigned)dir_num, dirname);
227 dir_objects[DT_NAME].data = dirname;
228 dir_objects[DT_NAME].size = strlen(dirname) + 1;
229 dir_objects[DT_NUM].data = &dir_num;
230 dir_objects[DT_NUM].size = sizeof(dir_num);
231 dir_objects[DT_BYTES].data = dir_size;
232 dir_objects[DT_BYTES].size = sizeof(*dir_size);
233 dir_objects[DT_FILES].data = dir_files;
234 dir_objects[DT_FILES].size = sizeof(*dir_files);
235
236 return osl_add_row(dir_table, dir_objects);
237 }
238
239 static uint32_t num_uids;
240
241 static int open_user_table(struct user_info *ui, int create)
242 {
243 int ret;
244
245 ui->desc = para_malloc(sizeof(*ui->desc));
246 ui->desc->num_columns = NUM_UT_COLUMNS;
247 ui->desc->flags = 0;
248 ui->desc->column_descriptions = user_table_cols;
249 ui->desc->dir = para_strdup(DATABASE_DIR);
250 ui->desc->name = make_message("%u", (unsigned)ui->uid);
251 num_uids++;
252 INFO_LOG(".............................uid #%u: %u\n",
253 (unsigned)num_uids, (unsigned)ui->uid);
254 if (create) {
255 ret = osl_create_table(ui->desc);
256 if (ret < 0)
257 goto err;
258 }
259 ret = osl_open_table(ui->desc, &ui->table);
260 if (ret < 0)
261 goto err;
262 return 1;
263 err:
264 free((char *)ui->desc->name);
265 free((char *)ui->desc->dir);
266 free(ui->desc);
267 ui->desc->name = NULL;
268 ui->desc->dir = NULL;
269 ui->desc = NULL;
270 ui->table = NULL;
271 return ret;
272 }
273
274 #define uid_hash_bits 8
275 static uint32_t uid_hash_table_size = 1 << uid_hash_bits;
276 #define PRIME1 0x811c9dc5
277 #define PRIME2 0x01000193
278
279 static void create_hash_table(void)
280 {
281 uid_hash_table = para_calloc(uid_hash_table_size
282 * sizeof(struct user_info));
283 }
284
285 static void free_hash_table(void)
286 {
287 free(uid_hash_table);
288 uid_hash_table = NULL;
289 }
290
291 static int create_tables(void)
292 {
293 int ret;
294
295 ret = osl_create_table(&dir_table_desc);
296 if (ret < 0)
297 return ret;
298 create_hash_table();
299 return 1;
300 }
301
302
303 static uint32_t double_hash(uint32_t uid, uint32_t probe_num)
304 {
305 return (uid * PRIME1 + ((uid * PRIME2) | 1) * probe_num)
306 % uid_hash_table_size;
307 }
308
309 #define FOR_EACH_USER(ui) for (ui = uid_hash_table; ui && ui < uid_hash_table \
310 + uid_hash_table_size; ui++)
311
312 enum search_uid_flags {
313 OPEN_USER_TABLE = 1,
314 CREATE_USER_TABLE = 2,
315 };
316
317 static int search_uid(uint32_t uid, enum search_uid_flags flags,
318 struct user_info **ui_ptr)
319 {
320 uint32_t p;
321
322 for (p = 0; p < uid_hash_table_size; p++) {
323 struct user_info *ui = uid_hash_table + double_hash(uid, p);
324
325 if (!ui->table) {
326 int ret;
327
328 if (!flags)
329 return -E_BAD_UID;
330 ui->uid = uid;
331 ret = open_user_table(ui, flags & CREATE_USER_TABLE);
332 if (ret < 0)
333 return ret;
334 if (ui_ptr)
335 *ui_ptr = ui;
336 return 1;
337 }
338 if (ui->uid != uid)
339 continue;
340 if (ui_ptr)
341 *ui_ptr = ui;
342 return 0;
343 }
344 return flags? -E_HASH_TABLE_OVERFLOW : -E_BAD_UID;
345 }
346
347 static int update_user_row(struct osl_table *t, uint64_t dir_num,
348 uint64_t *add)
349 {
350 struct osl_row *row;
351 struct osl_object obj = {.data = &dir_num, .size = sizeof(dir_num)};
352
353 int ret = osl_get_row(t, UT_DIR_NUM, &obj, &row);
354
355 if (ret < 0 && ret != -E_RB_KEY_NOT_FOUND)
356 return ret;
357 if (ret < 0) { /* this is the first file we add */
358 struct osl_object objects[NUM_UT_COLUMNS];
359 uint64_t num_files = 1;
360
361 objects[UT_DIR_NUM].data = &dir_num;
362 objects[UT_DIR_NUM].size = sizeof(dir_num);
363 objects[UT_BYTES].data = add;
364 objects[UT_BYTES].size = sizeof(*add);
365 objects[UT_FILES].data = &num_files;
366 objects[UT_FILES].size = sizeof(num_files);
367 INFO_LOG("######################### ret: %d\n", ret);
368 ret = osl_add_row(t, objects);
369 INFO_LOG("######################### ret: %d\n", ret);
370 return ret;
371 } else { /* add size and increment file count */
372 uint64_t num;
373 struct osl_object obj1, obj2 = {.data = &num, .size = sizeof(num)};
374
375 ret = osl_get_object(t, row, UT_BYTES, &obj1);
376 if (ret < 0)
377 return ret;
378 num = *(uint64_t *)obj1.data + *add;
379 ret = osl_update_object(t, row, UT_BYTES, &obj2);
380 if (ret < 0)
381 return ret;
382 ret = osl_get_object(t, row, UT_FILES, &obj1);
383 if (ret < 0)
384 return ret;
385 num = *(uint64_t *)obj1.data + 1;
386 return osl_update_object(t, row, UT_FILES, &obj2);
387 }
388 }
389
390 static uint64_t num_dirs;
391 static uint64_t num_files;
392 static uint64_t num_bytes;
393
394 int scan_dir(char *dirname)
395 {
396 DIR *dir;
397 struct dirent *entry;
398 int ret, cwd_fd, ret2;
399 uint64_t dir_size = 0, dir_files = 0;
400 uint64_t this_dir_num = num_dirs++;
401
402 DEBUG_LOG("----------------- %llu: %s\n", (long long unsigned)num_dirs, dirname);
403 ret = para_opendir(dirname, &dir, &cwd_fd);
404 if (ret < 0) {
405 if (ret != -ERRNO_TO_ERROR(EACCES))
406 return ret;
407 WARNING_LOG("permission denied for %s\n", dirname);
408 return 1;
409 }
410 while ((entry = readdir(dir))) {
411 mode_t m;
412 char *tmp;
413 struct stat s;
414 uint32_t uid;
415 uint64_t size;
416 struct user_info *ui;
417
418 if (!strcmp(entry->d_name, "."))
419 continue;
420 if (!strcmp(entry->d_name, ".."))
421 continue;
422 if (lstat(entry->d_name, &s) == -1) {
423 WARNING_LOG("lstat error for %s/%s\n", dirname,
424 entry->d_name);
425 continue;
426 }
427 m = s.st_mode;
428 if (!S_ISREG(m) && !S_ISDIR(m))
429 continue;
430 if (S_ISDIR(m)) {
431 tmp = make_message("%s/%s", dirname, entry->d_name);
432 ret = scan_dir(tmp);
433 free(tmp);
434 if (ret < 0)
435 goto out;
436 continue;
437 }
438 /* regular file */
439 size = s.st_size;
440 dir_size += size;
441 num_bytes += size;
442 dir_files++;
443 num_files++;
444 uid = s.st_uid;
445 ret = search_uid(uid, CREATE_USER_TABLE | OPEN_USER_TABLE, &ui);
446 if (ret < 0)
447 goto out;
448 ui->bytes += size;
449 ui->files++;
450 ret = update_user_row(ui->table, this_dir_num, &size);
451 if (ret < 0)
452 goto out;
453 }
454 ret = add_directory(dirname, this_dir_num, &dir_size, &dir_files);
455 out:
456 closedir(dir);
457 ret2 = para_fchdir(cwd_fd);
458 if (ret2 < 0 && ret >= 0)
459 ret = ret2;
460 close(cwd_fd);
461 return ret;
462 }
463
464 static int get_dir_name(struct osl_row *row, char **name)
465 {
466 struct osl_object obj;
467 int ret = osl_get_object(dir_table, row, DT_NAME, &obj);
468
469 if (ret < 0)
470 return ret;
471 *name = obj.data;
472 return 1;
473 }
474
475 enum global_stats_flags {
476 GSF_PRINT_DIRNAME = 1,
477 GSF_PRINT_BYTES = 2,
478 GSF_PRINT_FILES = 4,
479 GSF_COMPUTE_SUMMARY = 8,
480 };
481
482 struct global_stats_info {
483 uint32_t count;
484 enum global_stats_flags flags;
485 };
486
487 static int global_stats_loop_function(struct osl_row *row, void *data)
488 {
489 struct global_stats_info *gsi = data;
490 struct osl_object obj;
491 char *dirname;
492 int ret, summary = gsi->flags & GSF_COMPUTE_SUMMARY;
493
494 if (!gsi->count && !summary)
495 return -E_LOOP_COMPLETE;
496 if (gsi->count && (gsi->flags & GSF_PRINT_DIRNAME)) {
497 ret = get_dir_name(row, &dirname);
498 if (ret < 0)
499 return ret;
500 printf("%s%s", dirname,
501 (gsi->flags & (GSF_PRINT_FILES | GSF_PRINT_BYTES))?
502 "\t" : "\n"
503 );
504 }
505 if (summary || (gsi->count && (gsi->flags & GSF_PRINT_FILES))) {
506 uint64_t files;
507 ret = osl_get_object(dir_table, row, DT_FILES, &obj);
508 if (ret < 0)
509 return ret;
510 files = *(uint64_t *)obj.data;
511 if (gsi->count && (gsi->flags & GSF_PRINT_FILES))
512 printf("%llu%s", (long long unsigned)files,
513 (gsi->flags & GSF_PRINT_BYTES)? "\t" : "\n");
514 if (summary)
515 num_files += files;
516 }
517 if (summary || (gsi->count && (gsi->flags & GSF_PRINT_BYTES))) {
518 uint64_t bytes;
519 ret = osl_get_object(dir_table, row, DT_BYTES, &obj);
520 if (ret < 0)
521 return ret;
522 bytes = *(uint64_t *)obj.data;
523 if (gsi->count && (gsi->flags & GSF_PRINT_BYTES))
524 printf("%llu\n", (long long unsigned)bytes);
525 if (summary) {
526 num_bytes += bytes;
527 num_dirs++;
528 }
529 }
530 if (gsi->count)
531 gsi->count--;
532 return 1;
533 }
534
535 static void print_id_stats(void)
536 {
537 struct user_info *ui;
538
539 printf("--------------------- user summary (uid/dirs/files/bytes):\n");
540 FOR_EACH_USER(ui) {
541 if (!ui->table)
542 continue;
543 printf("%u\t%llu\t%llu\t%llu\n", (unsigned)ui->uid,
544 (long long unsigned)ui->dirs,
545 (long long unsigned)ui->files,
546 (long long unsigned)ui->bytes);
547 }
548 }
549
550 enum user_stats_flags {
551 USF_PRINT_DIRNAME = 1,
552 USF_PRINT_BYTES = 2,
553 USF_PRINT_FILES = 4,
554 USF_COMPUTE_SUMMARY = 8,
555 };
556
557 struct user_stats_info {
558 uint32_t count;
559 enum user_stats_flags flags;
560 struct user_info *ui;
561 };
562
563 static int user_stats_loop_function(struct osl_row *row, void *data)
564 {
565 struct user_stats_info *usi = data;
566 struct osl_row *dir_row;
567 struct osl_object obj;
568 int ret, summary = usi->flags & GSF_COMPUTE_SUMMARY;
569
570 if (!usi->count && !summary)
571 return -E_LOOP_COMPLETE;
572 if (usi->count && (usi->flags & USF_PRINT_DIRNAME)) {
573 char *dirname;
574 ret = osl_get_object(usi->ui->table, row, UT_DIR_NUM, &obj);
575 if (ret < 0)
576 return ret;
577 ret = osl_get_row(dir_table, DT_NUM, &obj, &dir_row);
578 if (ret < 0)
579 return ret;
580 ret = osl_get_object(dir_table, dir_row, DT_NAME, &obj);
581 if (ret < 0)
582 return ret;
583 dirname = obj.data;
584 printf("%s%s",
585 dirname,
586 (usi->flags & (USF_PRINT_FILES | USF_PRINT_BYTES))?
587 "\t" : "\n"
588 );
589 }
590 if (summary || (usi->count && (usi->flags & USF_PRINT_FILES))) {
591 uint64_t files;
592 ret = osl_get_object(usi->ui->table, row, UT_FILES, &obj);
593 if (ret < 0)
594 return ret;
595 files = *(uint64_t *)obj.data;
596 if (usi->count && (usi->flags & USF_PRINT_FILES))
597 printf("%llu%s",
598 (long long unsigned)files,
599 (usi->flags & USF_PRINT_BYTES)? "\t" : "\n"
600 );
601 if (summary)
602 usi->ui->files += files;
603 }
604 if (summary || (usi->count && (usi->flags & USF_PRINT_BYTES))) {
605 uint64_t bytes;
606 ret = osl_get_object(usi->ui->table, row, UT_BYTES, &obj);
607 if (ret < 0)
608 return ret;
609 bytes = *(uint64_t *)obj.data;
610 if (usi->count && (usi->flags & USF_PRINT_BYTES))
611 printf("%llu\n", (long long unsigned)bytes);
612 if (summary) {
613 usi->ui->bytes += bytes;
614 usi->ui->dirs++;
615 }
616
617 }
618 if (usi->count)
619 usi->count--;
620 return 1;
621 }
622
623 static void print_user_stats(void)
624 {
625 struct user_info *ui;
626
627 FOR_EACH_USER(ui) {
628 struct user_stats_info usi = {
629 .count = 10,
630 .ui = ui
631 };
632 if (!ui->table)
633 continue;
634 usi.flags = USF_PRINT_DIRNAME | USF_PRINT_BYTES | USF_COMPUTE_SUMMARY;
635 printf("************************************************ uid %u\n",
636 (unsigned) ui->uid);
637 if (!ui->table)
638 continue;
639 printf("----------------- Largest dirs -------------------\n");
640 osl_rbtree_loop_reverse(ui->table, UT_BYTES, &usi,
641 user_stats_loop_function);
642 printf("---------- dirs containing most files ------------\n");
643 usi.count = 10;
644 usi.flags = USF_PRINT_DIRNAME | USF_PRINT_FILES;
645 osl_rbtree_loop_reverse(ui->table, UT_FILES, &usi,
646 user_stats_loop_function);
647 }
648 }
649
650 static int print_statistics(void)
651 {
652 int ret;
653 struct global_stats_info gsi = {
654 .count = 10,
655 .flags = GSF_PRINT_DIRNAME | GSF_PRINT_BYTES | GSF_COMPUTE_SUMMARY
656 };
657
658 printf("----------------- Largest dirs -------------------\n");
659 ret = osl_rbtree_loop_reverse(dir_table, DT_BYTES, &gsi,
660 global_stats_loop_function);
661 if (ret < 0 && ret != -E_LOOP_COMPLETE)
662 return ret;
663 gsi.count = 10;
664
665 gsi.flags = GSF_PRINT_DIRNAME | GSF_PRINT_FILES;
666 printf("---------- dirs containing most files ------------\n");
667 ret = osl_rbtree_loop_reverse(dir_table, DT_FILES, &gsi,
668 global_stats_loop_function);
669 if (ret < 0 && ret != -E_LOOP_COMPLETE)
670 return ret;
671
672 printf("------------------ Global summary (dirs/files/bytes)\n"
673 "%llu\t%llu\t%llu\n",
674 (long long unsigned)num_dirs, (long long unsigned)num_files,
675 (long long unsigned)num_bytes);
676 print_user_stats();
677 print_id_stats();
678 return 1;
679 }
680
681 static int write_uid_list(void)
682 {
683 char *buf;
684 uint32_t count = 0;
685 struct user_info *ui;
686 size_t size = num_uids * sizeof(uint32_t);
687 int ret;
688
689 if (!num_uids)
690 return 0;
691 buf = para_malloc(size);
692 FOR_EACH_USER(ui) {
693 if (!ui->table)
694 continue;
695 write_u32(buf + count++ * sizeof(uint32_t), ui->uid);
696 }
697 ret = para_write_file(UID_LIST, buf, size);
698 free(buf);
699 return ret;
700 }
701
702 static int open_dir_table(void)
703 {
704 return osl_open_table(&dir_table_desc, &dir_table);
705 }
706
707 static void close_dir_table(void)
708 {
709 int ret;
710
711 if (!dir_table)
712 return;
713 ret = osl_close_table(dir_table, OSL_MARK_CLEAN);
714 if (ret < 0)
715 ERROR_LOG("failed to close dir table: %s\n", error_txt(-ret));
716 dir_table = NULL;
717 }
718
719 static void close_user_table(struct user_info *ui)
720 {
721 int ret;
722
723 if (!ui || !ui->table)
724 return;
725 ret = osl_close_table(ui->table, OSL_MARK_CLEAN);
726 if (ret < 0)
727 ERROR_LOG("failed to close user table %u: %s\n",
728 (unsigned) ui->uid, error_txt(-ret));
729 free((char *)ui->desc->name);
730 ui->desc->name = NULL;
731 free((char *)ui->desc->dir);
732 ui->desc->dir = NULL;
733 free(ui->desc);
734 ui->desc = NULL;
735 ui->table = NULL;
736 }
737
738 static void close_user_tables(void)
739 {
740 struct user_info *ui;
741
742 FOR_EACH_USER(ui)
743 close_user_table(ui);
744 }
745
746 static void close_all_tables(void)
747 {
748 close_dir_table();
749 close_user_tables();
750 free_hash_table();
751 }
752
753 static int com_create()
754 {
755 int ret = create_tables();
756 if (ret < 0)
757 return ret;
758 ret = open_dir_table();
759 if (ret < 0)
760 return ret;
761 ret = scan_dir(conf.base_dir_arg);
762 if (ret < 0)
763 goto out;
764 ret = write_uid_list();
765 out:
766 close_all_tables();
767 return ret;
768 }
769
770 static int read_uid_file(void)
771 {
772 char *map;
773 size_t size;
774 int ret = mmap_full_file(UID_LIST, O_RDONLY, (void **)&map, &size, NULL);
775 uint32_t n;
776
777 if (ret < 0)
778 return ret;
779 num_uids = size / 4;
780 /* hash table size should be a power of two and larger than the number of uids */
781 uid_hash_table_size = 4;
782 while (uid_hash_table_size < num_uids)
783 uid_hash_table_size *= 2;
784 create_hash_table();
785 for (n = 0; n < num_uids; n++) {
786 uint32_t uid = read_u32(map + n * sizeof(uid));
787 ret = search_uid(uid, OPEN_USER_TABLE, NULL);
788 if (ret < 0)
789 goto out;
790 }
791 out:
792 para_munmap(map, size);
793 return ret;
794 }
795
796 static int com_select(void)
797 {
798 int ret;
799
800 ret = open_dir_table();
801 if (ret < 0)
802 return ret;
803 ret = read_uid_file();
804 if (ret < 0)
805 return ret;
806 print_statistics();
807 close_all_tables();
808 return 1;
809 }
810
811 int main(int argc, char **argv)
812 {
813 int ret;
814 struct cmdline_parser_params params = {
815 .override = 0,
816 .initialize = 1,
817 .check_required = 0,
818 .check_ambiguity = 0,
819 .print_errors = 1
820 };
821
822 cmdline_parser_ext(argc, argv, &conf, &params); /* aborts on errors */
823 ret = -E_SYNTAX;
824 if (conf.select_given)
825 ret = com_select();
826 else
827 ret = com_create();
828 if (ret < 0)
829 goto out;
830 out:
831 if (ret < 0) {
832 ERROR_LOG("%s\n", error_txt(-ret));
833 return -EXIT_FAILURE;
834 }
835 return EXIT_SUCCESS;
836 }