2 #include <dirent.h> /* readdir() */
4 #include "gcc-compat.h"
9 #include "portable_io.h"
13 /** Command line and config file options. */
14 static struct gengetopt_args_info conf;
17 /** whether this slot of the hash table is used. */
19 /** whether this uid should be taken into account. */
26 struct osl_table *table;
30 struct osl_table_description *desc;
34 * Contains info for each user that owns at least one regular file.
36 * Even users that are not taken into account because of the --uid
37 * option occupy a slot in this hash table. This allows to find out
38 * quicky whether a uid is admissible. And yes, this has to be fast.
40 static struct user_info *uid_hash_table;
42 static inline int ui_used(struct user_info *ui)
44 return ui->flags & UI_FL_SLOT_USED;
47 static inline int ui_admissible(struct user_info *ui)
49 return ui->flags & UI_FL_ADMISSIBLE;
57 static struct uid_range *admissible_uids;
59 static inline int check_uid_arg(const char *arg, uint32_t *uid)
61 const uint32_t max = ~0U;
63 * we need an 64-bit int for string -> uid conversion because strtoll()
64 * returns a signed value.
67 int ret = para_atoi64(arg, &val);
71 if (val < 0 || val > max)
72 return -ERRNO_TO_ERROR(EINVAL);
77 static int parse_uid_range(const char *orig_arg, struct uid_range *ur)
80 char *arg = para_strdup(orig_arg), *p = strchr(arg, '-');
83 if (p == arg) /* -42 */
85 ret = check_uid_arg(p, &ur->high);
88 ur->low = p? 0 : ur->high;
95 ret = check_uid_arg(arg, &ur->low);
99 if (*p) { /* 42-4711 */
100 ret = check_uid_arg(p, &ur->high);
104 if (ur->low > ur->high)
105 ret = -ERRNO_TO_ERROR(EINVAL);
108 ERROR_LOG("bad uid option: %s\n", orig_arg);
110 INFO_LOG("admissible uid range: %u - %u\n", ur->low,
117 /** evaluates to 1 if x < y, to -1 if x > y and to 0 if x == y */
118 #define NUM_COMPARE(x, y) ((int)((x) < (y)) - (int)((x) > (y)))
123 * \param ll Loglevel.
124 * \param fml Usual format string.
126 * All XXX_LOG() macros use this function.
128 __printf_2_3 void __log(int ll, const char* fmt,...)
136 if (ll < conf.loglevel_arg)
141 strftime(str, sizeof(str), "%b %d %H:%M:%S", tm);
142 fprintf(outfd, "%s ", str);
144 vfprintf(outfd, fmt, argp);
149 * Compare the size of two directories
151 * \param obj1 Pointer to the first object.
152 * \param obj2 Pointer to the second object.
154 * This function first compares the size values as usual integers. If they compare as
155 * equal, the address of \a obj1 and \a obj2 are compared. So this compare function
156 * returns zero if and only if \a obj1 and \a obj2 point to the same memory area.
158 static int size_compare(const struct osl_object *obj1, const struct osl_object *obj2)
160 uint64_t d1 = *(uint64_t *)obj1->data;
161 uint64_t d2 = *(uint64_t *)obj2->data;
162 int ret = NUM_COMPARE(d2, d1);
166 //INFO_LOG("addresses: %p, %p\n", obj1->data, obj2->data);
167 return NUM_COMPARE(obj2->data, obj1->data);
171 * Compare two osl objects pointing to unsigned integers of 64 bit size.
173 * \param obj1 Pointer to the first integer.
174 * \param obj2 Pointer to the second integer.
176 * \return The values required for an osl compare function.
178 * \sa osl_compare_func, osl_hash_compare().
180 static int uint64_compare(const struct osl_object *obj1,
181 const struct osl_object *obj2)
183 uint64_t d1 = read_u64((const char *)obj1->data);
184 uint64_t d2 = read_u64((const char *)obj2->data);
193 /** The columns of the directory table. */
194 enum dir_table_columns {
195 /** The name of the directory. */
197 /** The dir count number. */
199 /** The number of the parent directory. */
201 /** The number of bytes of all regular files. */
203 /** The number of all regular files. */
205 /** Number of columns in this table. */
209 static struct osl_column_description dir_table_cols[] = {
211 .storage_type = OSL_MAPPED_STORAGE,
216 .storage_type = OSL_MAPPED_STORAGE,
217 .storage_flags = OSL_RBTREE | OSL_FIXED_SIZE | OSL_UNIQUE,
219 .compare_function = uint64_compare,
220 .data_size = sizeof(uint64_t)
223 .storage_type = OSL_MAPPED_STORAGE,
224 .storage_flags = OSL_RBTREE | OSL_FIXED_SIZE | OSL_UNIQUE,
225 .name = "parent_num",
226 .compare_function = size_compare,
227 .data_size = sizeof(uint64_t)
230 .storage_type = OSL_MAPPED_STORAGE,
231 .storage_flags = OSL_RBTREE | OSL_FIXED_SIZE,
232 .compare_function = size_compare,
234 .data_size = sizeof(uint64_t)
237 .storage_type = OSL_MAPPED_STORAGE,
238 .storage_flags = OSL_RBTREE | OSL_FIXED_SIZE,
239 .compare_function = size_compare,
241 .data_size = sizeof(uint64_t)
245 static struct osl_table_description dir_table_desc = {
247 .num_columns = NUM_DT_COLUMNS,
249 .column_descriptions = dir_table_cols,
252 /** The columns of the id table. */
253 enum user_table_columns {
254 /** The numer of the directory. */
256 /** The number of bytes of all regular files in this dir owned by this id. */
258 /** The number of files in this dir owned by this id. */
260 /** Number of columns in this table. */
264 static struct osl_column_description user_table_cols[] = {
266 .storage_type = OSL_MAPPED_STORAGE,
267 .storage_flags = OSL_RBTREE | OSL_FIXED_SIZE | OSL_UNIQUE,
269 .compare_function = uint64_compare,
270 .data_size = sizeof(uint64_t)
273 .storage_type = OSL_MAPPED_STORAGE,
274 .storage_flags = OSL_RBTREE | OSL_FIXED_SIZE,
275 .compare_function = size_compare,
277 .data_size = sizeof(uint64_t)
280 .storage_type = OSL_MAPPED_STORAGE,
281 .storage_flags = OSL_RBTREE | OSL_FIXED_SIZE,
282 .compare_function = size_compare,
284 .data_size = sizeof(uint64_t)
288 static struct osl_table *dir_table;
290 static int add_directory(char *dirname, uint64_t *dir_num, uint64_t *parent_dir_num,
291 uint64_t *dir_size, uint64_t *dir_files)
293 struct osl_object dir_objects[NUM_DT_COLUMNS];
295 INFO_LOG("adding #%llu: %s\n", (long long unsigned)dir_num, dirname);
296 dir_objects[DT_NAME].data = dirname;
297 dir_objects[DT_NAME].size = strlen(dirname) + 1;
298 dir_objects[DT_NUM].data = dir_num;
299 dir_objects[DT_NUM].size = sizeof(*dir_num);
300 dir_objects[DT_PARENT_NUM].data = parent_dir_num;
301 dir_objects[DT_PARENT_NUM].size = sizeof(*parent_dir_num);
302 dir_objects[DT_BYTES].data = dir_size;
303 dir_objects[DT_BYTES].size = sizeof(*dir_size);
304 dir_objects[DT_FILES].data = dir_files;
305 dir_objects[DT_FILES].size = sizeof(*dir_files);
307 return osl_add_row(dir_table, dir_objects);
310 static uint32_t num_uids;
312 static int open_user_table(struct user_info *ui, int create)
316 ui->desc = para_malloc(sizeof(*ui->desc));
317 ui->desc->num_columns = NUM_UT_COLUMNS;
319 ui->desc->column_descriptions = user_table_cols;
320 ui->desc->dir = para_strdup(conf.database_dir_arg);
321 ui->desc->name = make_message("%u", (unsigned)ui->uid);
322 INFO_LOG(".............................uid #%u: %u\n",
323 (unsigned)num_uids, (unsigned)ui->uid);
325 ret = osl_create_table(ui->desc);
330 ret = osl_open_table(ui->desc, &ui->table);
335 free((char *)ui->desc->name);
336 free((char *)ui->desc->dir);
338 ui->desc->name = NULL;
339 ui->desc->dir = NULL;
346 #define uid_hash_bits 8
347 static uint32_t uid_hash_table_size = 1 << uid_hash_bits;
348 #define PRIME1 0x811c9dc5
349 #define PRIME2 0x01000193
351 static void create_hash_table(void)
353 uid_hash_table = para_calloc(uid_hash_table_size
354 * sizeof(struct user_info));
357 static void free_hash_table(void)
359 free(uid_hash_table);
360 uid_hash_table = NULL;
363 static int create_tables(void)
367 dir_table_desc.dir = para_strdup(conf.database_dir_arg);
368 ret = osl_create_table(&dir_table_desc);
376 * We use a hash table of size s=2^uid_hash_bits to map the uids into the
377 * interval [0..s]. Hash collisions are treated by open addressing, i.e.
378 * unused slots in the table are used to store different uids that hash to the
381 * If a hash collision occurs, different slots are successively probed in order
382 * to find an unused slot for the new uid. Probing is implemented via a second
383 * hash function that maps the uid to h=(uid * PRIME2) | 1, which is always an
386 * An odd number is sufficient to make sure each entry of the hash table gets
387 * probed for probe_num between 0 and s-1 because s is a power of two, hence
388 * the second hash value has never a common divisor with the hash table size.
389 * IOW: h is invertible in the ring [0..s].
391 static uint32_t double_hash(uint32_t uid, uint32_t probe_num)
393 return (uid * PRIME1 + ((uid * PRIME2) | 1) * probe_num)
394 % uid_hash_table_size;
397 #define FOR_EACH_USER(ui) for (ui = uid_hash_table; ui && ui < uid_hash_table \
398 + uid_hash_table_size; ui++)
400 enum search_uid_flags {
402 CREATE_USER_TABLE = 2,
405 static int uid_is_admissible(uint32_t uid)
409 for (i = 0; i < conf.uid_given; i++) {
410 struct uid_range *ur = admissible_uids + i;
412 if (ur->low <= uid && ur->high >= uid)
415 i = !conf.uid_given || i < conf.uid_given;
416 DEBUG_LOG("uid %u is %sadmissible\n", (unsigned)uid,
421 static int search_uid(uint32_t uid, enum search_uid_flags flags,
422 struct user_info **ui_ptr)
426 for (p = 0; p < uid_hash_table_size; p++) {
427 struct user_info *ui = uid_hash_table + double_hash(uid, p);
434 ui->flags |= UI_FL_SLOT_USED;
435 if (!uid_is_admissible(uid))
437 ui->flags |= UI_FL_ADMISSIBLE;
438 ret = open_user_table(ui, flags & CREATE_USER_TABLE);
452 return flags? -E_HASH_TABLE_OVERFLOW : -E_BAD_UID;
455 static int update_user_row(struct osl_table *t, uint64_t dir_num,
459 struct osl_object obj = {.data = &dir_num, .size = sizeof(dir_num)};
461 int ret = osl_get_row(t, UT_DIR_NUM, &obj, &row);
463 if (ret < 0 && ret != -E_RB_KEY_NOT_FOUND)
465 if (ret < 0) { /* this is the first file we add */
466 struct osl_object objects[NUM_UT_COLUMNS];
467 uint64_t num_files = 1;
469 objects[UT_DIR_NUM].data = &dir_num;
470 objects[UT_DIR_NUM].size = sizeof(dir_num);
471 objects[UT_BYTES].data = add;
472 objects[UT_BYTES].size = sizeof(*add);
473 objects[UT_FILES].data = &num_files;
474 objects[UT_FILES].size = sizeof(num_files);
475 INFO_LOG("######################### ret: %d\n", ret);
476 ret = osl_add_row(t, objects);
477 INFO_LOG("######################### ret: %d\n", ret);
479 } else { /* add size and increment file count */
481 struct osl_object obj1, obj2 = {.data = &num, .size = sizeof(num)};
483 ret = osl_get_object(t, row, UT_BYTES, &obj1);
486 num = *(uint64_t *)obj1.data + *add;
487 ret = osl_update_object(t, row, UT_BYTES, &obj2);
490 ret = osl_get_object(t, row, UT_FILES, &obj1);
493 num = *(uint64_t *)obj1.data + 1;
494 return osl_update_object(t, row, UT_FILES, &obj2);
498 static uint64_t num_dirs;
499 static uint64_t num_files;
500 static uint64_t num_bytes;
502 int scan_dir(char *dirname, uint64_t *parent_dir_num)
505 struct dirent *entry;
506 int ret, cwd_fd, ret2;
507 uint64_t dir_size = 0, dir_files = 0;
508 uint64_t this_dir_num = ++num_dirs;
510 DEBUG_LOG("----------------- %llu: %s\n", (long long unsigned)num_dirs, dirname);
511 ret = para_opendir(dirname, &dir, &cwd_fd);
513 if (ret != -ERRNO_TO_ERROR(EACCES))
515 WARNING_LOG("permission denied for %s\n", dirname);
518 while ((entry = readdir(dir))) {
523 struct user_info *ui;
525 if (!strcmp(entry->d_name, "."))
527 if (!strcmp(entry->d_name, ".."))
529 if (lstat(entry->d_name, &s) == -1) {
530 WARNING_LOG("lstat error for %s/%s\n", dirname,
535 if (!S_ISREG(m) && !S_ISDIR(m))
538 ret = scan_dir(entry->d_name, &this_dir_num);
550 ret = search_uid(uid, CREATE_USER_TABLE | OPEN_USER_TABLE, &ui);
555 ret = update_user_row(ui->table, this_dir_num, &size);
559 ret = add_directory(dirname, &this_dir_num, parent_dir_num,
560 &dir_size, &dir_files);
563 ret2 = para_fchdir(cwd_fd);
564 if (ret2 < 0 && ret >= 0)
570 static int get_dir_name_by_number(uint64_t *dirnum, char **name)
572 char *result = NULL, *tmp;
574 uint64_t val = *dirnum;
575 struct osl_object obj = {.data = &val, .size = sizeof(val)};
579 ret = osl_get_row(dir_table, DT_NUM, &obj, &row);
582 ret = osl_get_object(dir_table, row, DT_NAME, &obj);
586 tmp = make_message("%s/%s", (char *)obj.data, result);
590 result = para_strdup((char *)obj.data);
591 ret = osl_get_object(dir_table, row, DT_PARENT_NUM, &obj);
594 val = *(uint64_t *)obj.data;
606 static int get_dir_name_of_row(struct osl_row *dir_table_row, char **name)
608 struct osl_object obj;
610 char *this_dir, *prefix = NULL;
613 ret = osl_get_object(dir_table, dir_table_row, DT_NAME, &obj);
616 this_dir = para_strdup((char *)obj.data);
617 ret = osl_get_object(dir_table, dir_table_row, DT_PARENT_NUM, &obj);
620 if (!*(uint64_t *)obj.data) {
624 ret = get_dir_name_by_number((uint64_t *)obj.data, &prefix);
627 *name = make_message("%s/%s", prefix, this_dir);
635 const uint64_t size_unit_divisors[] = {
636 [size_unit_arg_b] = 1ULL,
637 [size_unit_arg_k] = 1024ULL,
638 [size_unit_arg_m] = 1024ULL * 1024ULL,
639 [size_unit_arg_g] = 1024ULL * 1024ULL * 1024ULL,
640 [size_unit_arg_t] = 1024ULL * 1024ULL * 1024ULL * 1024ULL,
643 const uint64_t count_unit_divisors[] = {
645 [count_unit_arg_n] = 1ULL,
646 [count_unit_arg_k] = 1000ULL,
647 [count_unit_arg_m] = 1000ULL * 1000ULL,
648 [count_unit_arg_g] = 1000ULL * 1000ULL * 1000ULL,
649 [count_unit_arg_t] = 1000ULL * 1000ULL * 1000ULL * 1000ULL,
652 const char size_unit_abbrevs[] = " BKMGT";
653 const char count_unit_abbrevs[] = " KMGT";
655 static void format_size_value(enum enum_size_unit unit, uint64_t value, char *result)
657 if (unit == size_unit_arg_h) /* human readable */
658 for (unit = size_unit_arg_b; unit < size_unit_arg_t && value > size_unit_divisors[unit + 1]; unit++)
660 sprintf(result, "%llu%c", (long long unsigned)value / size_unit_divisors[unit], size_unit_abbrevs[unit]);
663 static void format_count_value(enum enum_count_unit unit, uint64_t value, char *result)
665 if (unit == count_unit_arg_h) /* human readable */
666 for (unit = count_unit_arg_n; unit < count_unit_arg_t && value > count_unit_divisors[unit + 1]; unit++)
668 sprintf(result, "%llu%c", (long long unsigned)value / count_unit_divisors[unit], count_unit_abbrevs[unit]);
671 enum global_stats_flags {
672 GSF_PRINT_DIRNAME = 1,
675 GSF_COMPUTE_SUMMARY = 8,
678 struct global_stats_info {
680 enum global_stats_flags flags;
683 static int global_stats_loop_function(struct osl_row *row, void *data)
685 struct global_stats_info *gsi = data;
686 struct osl_object obj;
687 char *dirname, formated_value[25];
688 int ret, summary = gsi->flags & GSF_COMPUTE_SUMMARY;
690 if (!gsi->count && !summary)
691 return -E_LOOP_COMPLETE;
692 if (gsi->count && (gsi->flags & GSF_PRINT_DIRNAME)) {
693 ret = get_dir_name_of_row(row, &dirname);
696 printf("%s%s", dirname,
697 (gsi->flags & (GSF_PRINT_FILES | GSF_PRINT_BYTES))?
701 if (summary || (gsi->count && (gsi->flags & GSF_PRINT_FILES))) {
703 ret = osl_get_object(dir_table, row, DT_FILES, &obj);
706 files = *(uint64_t *)obj.data;
707 if (gsi->count && (gsi->flags & GSF_PRINT_FILES)) {
708 format_size_value(conf.size_unit_arg, files,
710 printf("%s%s", formated_value,
711 (gsi->flags & GSF_PRINT_BYTES)? "\t" : "\n");
716 if (summary || (gsi->count && (gsi->flags & GSF_PRINT_BYTES))) {
718 ret = osl_get_object(dir_table, row, DT_BYTES, &obj);
721 bytes = *(uint64_t *)obj.data;
722 if (gsi->count && (gsi->flags & GSF_PRINT_BYTES)) {
723 format_size_value(conf.size_unit_arg, bytes,
725 printf("%s\n", formated_value);
737 static void print_id_stats(void)
739 struct user_info *ui;
741 printf("--------------------- user summary (uid/dirs/files/bytes):\n");
743 char formated_dir_count[25], formated_file_count[25],
747 format_count_value(conf.count_unit_arg, ui->dirs,
749 format_count_value(conf.count_unit_arg, ui->files,
750 formated_file_count);
751 format_size_value(conf.size_unit_arg, ui->bytes,
753 printf("%u\t%s\t%s\t%s\n", (unsigned)ui->uid,
761 enum user_stats_flags {
762 USF_PRINT_DIRNAME = 1,
765 USF_COMPUTE_SUMMARY = 8,
768 struct user_stats_info {
770 enum user_stats_flags flags;
771 struct user_info *ui;
774 static int user_stats_loop_function(struct osl_row *row, void *data)
776 struct user_stats_info *usi = data;
777 struct osl_row *dir_row;
778 struct osl_object obj;
779 int ret, summary = usi->flags & GSF_COMPUTE_SUMMARY;
780 char formated_value[25];
782 if (!usi->count && !summary)
783 return -E_LOOP_COMPLETE;
784 if (usi->count && (usi->flags & USF_PRINT_DIRNAME)) {
786 ret = osl_get_object(usi->ui->table, row, UT_DIR_NUM, &obj);
789 ret = get_dir_name_by_number((uint64_t *)obj.data, &dirname);
794 (usi->flags & (USF_PRINT_FILES | USF_PRINT_BYTES))?
798 if (summary || (usi->count && (usi->flags & USF_PRINT_FILES))) {
800 ret = osl_get_object(usi->ui->table, row, UT_FILES, &obj);
803 files = *(uint64_t *)obj.data;
804 if (usi->count && (usi->flags & USF_PRINT_FILES)) {
805 format_size_value(conf.size_unit_arg, files,
807 printf("%s%s", formated_value,
808 (usi->flags & USF_PRINT_BYTES)? "\t" : "\n"
812 usi->ui->files += files;
814 if (summary || (usi->count && (usi->flags & USF_PRINT_BYTES))) {
816 ret = osl_get_object(usi->ui->table, row, UT_BYTES, &obj);
819 bytes = *(uint64_t *)obj.data;
820 if (usi->count && (usi->flags & USF_PRINT_BYTES)) {
821 format_size_value(conf.size_unit_arg, bytes,
823 printf("%s\n", formated_value);
826 usi->ui->bytes += bytes;
836 static void print_user_stats(void)
838 struct user_info *ui;
841 struct user_stats_info usi = {
842 .count = conf.limit_arg,
845 if (!ui_used(ui) || !ui_admissible(ui))
847 usi.flags = USF_PRINT_DIRNAME | USF_PRINT_BYTES | USF_COMPUTE_SUMMARY;
848 printf("************************************************ uid %u\n",
850 printf("----------------- Largest dirs -------------------\n");
851 osl_rbtree_loop_reverse(ui->table, UT_BYTES, &usi,
852 user_stats_loop_function);
853 printf("---------- dirs containing most files ------------\n");
854 usi.count = conf.limit_arg,
855 usi.flags = USF_PRINT_DIRNAME | USF_PRINT_FILES;
856 osl_rbtree_loop_reverse(ui->table, UT_FILES, &usi,
857 user_stats_loop_function);
861 static int print_statistics(void)
864 struct global_stats_info gsi = {
865 .count = conf.limit_arg,
866 .flags = GSF_PRINT_DIRNAME | GSF_PRINT_BYTES | GSF_COMPUTE_SUMMARY
869 printf("----------------- Largest dirs -------------------\n");
870 ret = osl_rbtree_loop_reverse(dir_table, DT_BYTES, &gsi,
871 global_stats_loop_function);
872 if (ret < 0 && ret != -E_LOOP_COMPLETE)
874 gsi.count = conf.limit_arg;
876 gsi.flags = GSF_PRINT_DIRNAME | GSF_PRINT_FILES;
877 printf("---------- dirs containing most files ------------\n");
878 ret = osl_rbtree_loop_reverse(dir_table, DT_FILES, &gsi,
879 global_stats_loop_function);
880 if (ret < 0 && ret != -E_LOOP_COMPLETE)
883 printf("------------------ Global summary (dirs/files/bytes)\n"
884 "%llu\t%llu\t%llu\n",
885 (long long unsigned)num_dirs, (long long unsigned)num_files,
886 (long long unsigned)num_bytes);
892 static char *get_uid_list_name(void)
894 return make_message("%s/uid_list", conf.database_dir_arg);
897 static int write_uid_list(void)
899 char *buf, *filename;
901 struct user_info *ui;
902 size_t size = num_uids * sizeof(uint32_t);
907 buf = para_malloc(size);
909 if (!ui_used(ui) || !ui_admissible(ui))
911 DEBUG_LOG("saving uid %u\n", (unsigned) ui->uid);
912 write_u32(buf + count++ * sizeof(uint32_t), ui->uid);
914 filename = get_uid_list_name();
915 ret = para_write_file(filename, buf, size);
921 static int open_dir_table(void)
923 if (!dir_table_desc.dir) /* we did not create the table */
924 dir_table_desc.dir = para_strdup(conf.database_dir_arg);
925 return osl_open_table(&dir_table_desc, &dir_table);
928 static void close_dir_table(void)
934 ret = osl_close_table(dir_table, OSL_MARK_CLEAN);
936 ERROR_LOG("failed to close dir table: %s\n", error_txt(-ret));
937 free((char *)dir_table_desc.dir);
941 static void close_user_table(struct user_info *ui)
945 if (!ui || !ui_used(ui) || !ui_admissible(ui))
947 ret = osl_close_table(ui->table, OSL_MARK_CLEAN);
949 ERROR_LOG("failed to close user table %u: %s\n",
950 (unsigned) ui->uid, error_txt(-ret));
951 free((char *)ui->desc->name);
952 ui->desc->name = NULL;
953 free((char *)ui->desc->dir);
954 ui->desc->dir = NULL;
961 static void close_user_tables(void)
963 struct user_info *ui;
966 close_user_table(ui);
969 static void close_all_tables(void)
976 static int com_create()
978 uint64_t zero = 0ULL;
979 int ret = create_tables();
983 ret = open_dir_table();
986 ret = scan_dir(conf.base_dir_arg, &zero);
989 ret = write_uid_list();
995 static int read_uid_file(void)
999 char *filename = get_uid_list_name(), *map;
1000 int ret = mmap_full_file(filename, O_RDONLY, (void **)&map, &size, NULL);
1003 INFO_LOG("failed to map %s\n", filename);
1007 num_uids = size / 4;
1008 INFO_LOG("found %u uids in %s\n", (unsigned)num_uids, filename);
1010 /* hash table size should be a power of two and larger than the number of uids */
1011 uid_hash_table_size = 4;
1012 while (uid_hash_table_size < num_uids)
1013 uid_hash_table_size *= 2;
1014 create_hash_table();
1015 for (n = 0; n < num_uids; n++) {
1016 uint32_t uid = read_u32(map + n * sizeof(uid));
1017 ret = search_uid(uid, OPEN_USER_TABLE, NULL);
1022 para_munmap(map, size);
1026 static int com_select(void)
1030 ret = open_dir_table();
1033 ret = read_uid_file();
1036 ret = print_statistics();
1041 static int check_args(void)
1045 if (!conf.uid_given)
1048 admissible_uids = para_malloc(conf.uid_given * sizeof(*admissible_uids));
1050 for (i = 0; i < conf.uid_given; i++) {
1051 ret = parse_uid_range(conf.uid_arg[i], admissible_uids + i);
1057 free(admissible_uids);
1058 admissible_uids = NULL;
1062 int main(int argc, char **argv)
1065 struct cmdline_parser_params params = {
1068 .check_required = 0,
1069 .check_ambiguity = 0,
1073 cmdline_parser_ext(argc, argv, &conf, ¶ms); /* aborts on errors */
1078 if (conf.select_given)
1085 free(admissible_uids);
1087 ERROR_LOG("%s\n", error_txt(-ret));
1088 return -EXIT_FAILURE;
1090 return EXIT_SUCCESS;