9b800eaf1cb2e75b6b990ba7976049d7d0e82c15
[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 "fd.h"
7 #include "string.h"
8 #include "error.h"
9 #include "portable_io.h"
10
11 DEFINE_ERRLIST;
12 int osl_errno;
13
14 /** Command line and config file options. */
15 static struct gengetopt_args_info conf;
16
17 enum uid_info_flags {
18 /** whether this slot of the hash table is used. */
19 UI_FL_SLOT_USED = 1,
20 /** whether this uid should be taken into account. */
21 UI_FL_ADMISSIBLE = 2,
22 };
23
24 struct user_info {
25 uint32_t uid;
26 uint32_t flags;
27 struct osl_table *table;
28 uint64_t files;
29 uint64_t bytes;
30 uint64_t dirs;
31 struct osl_table_description *desc;
32 };
33
34 /** The decimal representation of an uint64_t never exceeds that size. */
35 #define FORMATED_VALUE_SIZE 25
36
37
38 /**
39 * Contains info for each user that owns at least one regular file.
40 *
41 * Even users that are not taken into account because of the --uid
42 * option occupy a slot in this hash table. This allows to find out
43 * quicky whether a uid is admissible. And yes, this has to be fast.
44 */
45 static struct user_info *uid_hash_table;
46
47 /* these get filled in by the select command. */
48 static char count_unit_buf[4] = "( )", size_unit_buf[4] = "( )";
49
50 static inline int ui_used(struct user_info *ui)
51 {
52 return ui->flags & UI_FL_SLOT_USED;
53 }
54
55 static inline int ui_admissible(struct user_info *ui)
56 {
57 return ui->flags & UI_FL_ADMISSIBLE;
58 }
59
60 struct uid_range {
61 uint32_t low;
62 uint32_t high;
63 };
64
65 static struct uid_range *admissible_uids;
66
67 static inline int check_uid_arg(const char *arg, uint32_t *uid)
68 {
69 const uint32_t max = ~0U;
70 /*
71 * we need an 64-bit int for string -> uid conversion because strtoll()
72 * returns a signed value.
73 */
74 int64_t val;
75 int ret = para_atoi64(arg, &val);
76
77 if (ret < 0)
78 return ret;
79 if (val < 0 || val > max)
80 return -ERRNO_TO_ERROR(EINVAL);
81 *uid = val;
82 return 1;
83 }
84
85 static int parse_uid_range(const char *orig_arg, struct uid_range *ur)
86 {
87 int ret;
88 char *arg = para_strdup(orig_arg), *p = strchr(arg, '-');
89
90 if (!p || p == arg) { /* -42 or 42 */
91 ret = check_uid_arg(p? p + 1 : arg, &ur->high);
92 if (ret < 0)
93 goto out;
94 ur->low = p? 0 : ur->high;
95 ret = 1;
96 goto out;
97 }
98 /* 42- or 42-4711 */
99 *p = '\0';
100 p++;
101 ret = check_uid_arg(arg, &ur->low);
102 if (ret < 0)
103 goto out;
104 ur->high = ~0U;
105 if (*p) { /* 42-4711 */
106 ret = check_uid_arg(p, &ur->high);
107 if (ret < 0)
108 goto out;
109 }
110 if (ur->low > ur->high)
111 ret = -ERRNO_TO_ERROR(EINVAL);
112 out:
113 if (ret < 0)
114 ERROR_LOG("bad uid option: %s\n", orig_arg);
115 else
116 INFO_LOG("admissible uid range: %u - %u\n", ur->low,
117 ur->high);
118 free(arg);
119 return ret;
120 }
121
122
123 /** evaluates to 1 if x < y, to -1 if x > y and to 0 if x == y */
124 #define NUM_COMPARE(x, y) ((int)((x) < (y)) - (int)((x) > (y)))
125
126 /**
127 * The log function.
128 *
129 * \param ll Loglevel.
130 * \param fml Usual format string.
131 *
132 * All XXX_LOG() macros use this function.
133 */
134 __printf_2_3 void __log(int ll, const char* fmt,...)
135 {
136 va_list argp;
137 FILE *outfd;
138 struct tm *tm;
139 time_t t1;
140 char str[255] = "";
141
142 if (ll < conf.loglevel_arg)
143 return;
144 outfd = stderr;
145 time(&t1);
146 tm = localtime(&t1);
147 strftime(str, sizeof(str), "%b %d %H:%M:%S", tm);
148 fprintf(outfd, "%s ", str);
149 va_start(argp, fmt);
150 vfprintf(outfd, fmt, argp);
151 va_end(argp);
152 }
153
154 /**
155 * Compare the size of two directories
156 *
157 * \param obj1 Pointer to the first object.
158 * \param obj2 Pointer to the second object.
159 *
160 * This function first compares the size values as usual integers. If they compare as
161 * equal, the address of \a obj1 and \a obj2 are compared. So this compare function
162 * returns zero if and only if \a obj1 and \a obj2 point to the same memory area.
163 */
164 static int size_compare(const struct osl_object *obj1, const struct osl_object *obj2)
165 {
166 uint64_t d1 = *(uint64_t *)obj1->data;
167 uint64_t d2 = *(uint64_t *)obj2->data;
168 int ret = NUM_COMPARE(d2, d1);
169
170 if (ret)
171 return ret;
172 //INFO_LOG("addresses: %p, %p\n", obj1->data, obj2->data);
173 return NUM_COMPARE(obj2->data, obj1->data);
174 }
175
176 /**
177 * Compare two osl objects pointing to unsigned integers of 64 bit size.
178 *
179 * \param obj1 Pointer to the first integer.
180 * \param obj2 Pointer to the second integer.
181 *
182 * \return The values required for an osl compare function.
183 *
184 * \sa osl_compare_func, osl_hash_compare().
185 */
186 static int uint64_compare(const struct osl_object *obj1,
187 const struct osl_object *obj2)
188 {
189 uint64_t d1 = read_u64((const char *)obj1->data);
190 uint64_t d2 = read_u64((const char *)obj2->data);
191
192 if (d1 < d2)
193 return 1;
194 if (d1 > d2)
195 return -1;
196 return 0;
197 }
198
199 /** The columns of the directory table. */
200 enum dir_table_columns {
201 /** The name of the directory. */
202 DT_NAME,
203 /** The dir count number. */
204 DT_NUM,
205 /** The number of the parent directory. */
206 DT_PARENT_NUM,
207 /** The number of bytes of all regular files. */
208 DT_BYTES,
209 /** The number of all regular files. */
210 DT_FILES,
211 /** Number of columns in this table. */
212 NUM_DT_COLUMNS
213 };
214
215 static struct osl_column_description dir_table_cols[] = {
216 [DT_NAME] = {
217 .storage_type = OSL_MAPPED_STORAGE,
218 .storage_flags = 0,
219 .name = "dir",
220 },
221 [DT_NUM] = {
222 .storage_type = OSL_MAPPED_STORAGE,
223 .storage_flags = OSL_RBTREE | OSL_FIXED_SIZE | OSL_UNIQUE,
224 .name = "num",
225 .compare_function = uint64_compare,
226 .data_size = sizeof(uint64_t)
227 },
228 [DT_PARENT_NUM] = {
229 .storage_type = OSL_MAPPED_STORAGE,
230 .storage_flags = OSL_RBTREE | OSL_FIXED_SIZE | OSL_UNIQUE,
231 .name = "parent_num",
232 .compare_function = size_compare,
233 .data_size = sizeof(uint64_t)
234 },
235 [DT_BYTES] = {
236 .storage_type = OSL_MAPPED_STORAGE,
237 .storage_flags = OSL_RBTREE | OSL_FIXED_SIZE,
238 .compare_function = size_compare,
239 .name = "num_bytes",
240 .data_size = sizeof(uint64_t)
241 },
242 [DT_FILES] = {
243 .storage_type = OSL_MAPPED_STORAGE,
244 .storage_flags = OSL_RBTREE | OSL_FIXED_SIZE,
245 .compare_function = size_compare,
246 .name = "num_files",
247 .data_size = sizeof(uint64_t)
248 }
249 };
250
251 static struct osl_table_description dir_table_desc = {
252 .name = "dir_table",
253 .num_columns = NUM_DT_COLUMNS,
254 .flags = 0,
255 .column_descriptions = dir_table_cols,
256 };
257
258 /** The columns of the id table. */
259 enum user_table_columns {
260 /** The numer of the directory. */
261 UT_DIR_NUM,
262 /** The number of bytes of all regular files in this dir owned by this id. */
263 UT_BYTES,
264 /** The number of files in this dir owned by this id. */
265 UT_FILES,
266 /** Number of columns in this table. */
267 NUM_UT_COLUMNS
268 };
269
270 static struct osl_column_description user_table_cols[] = {
271 [UT_DIR_NUM] = {
272 .storage_type = OSL_MAPPED_STORAGE,
273 .storage_flags = OSL_RBTREE | OSL_FIXED_SIZE | OSL_UNIQUE,
274 .name = "dir_num",
275 .compare_function = uint64_compare,
276 .data_size = sizeof(uint64_t)
277 },
278 [UT_BYTES] = {
279 .storage_type = OSL_MAPPED_STORAGE,
280 .storage_flags = OSL_RBTREE | OSL_FIXED_SIZE,
281 .compare_function = size_compare,
282 .name = "num_bytes",
283 .data_size = sizeof(uint64_t)
284 },
285 [UT_FILES] = {
286 .storage_type = OSL_MAPPED_STORAGE,
287 .storage_flags = OSL_RBTREE | OSL_FIXED_SIZE,
288 .compare_function = size_compare,
289 .name = "num_files",
290 .data_size = sizeof(uint64_t)
291 },
292 };
293
294 static struct osl_table *dir_table;
295
296 static int add_directory(char *dirname, uint64_t *dir_num, uint64_t *parent_dir_num,
297 uint64_t *dir_size, uint64_t *dir_files)
298 {
299 struct osl_object dir_objects[NUM_DT_COLUMNS];
300
301 INFO_LOG("adding #%llu: %s\n", (long long unsigned)*dir_num, dirname);
302 dir_objects[DT_NAME].data = dirname;
303 dir_objects[DT_NAME].size = strlen(dirname) + 1;
304 dir_objects[DT_NUM].data = dir_num;
305 dir_objects[DT_NUM].size = sizeof(*dir_num);
306 dir_objects[DT_PARENT_NUM].data = parent_dir_num;
307 dir_objects[DT_PARENT_NUM].size = sizeof(*parent_dir_num);
308 dir_objects[DT_BYTES].data = dir_size;
309 dir_objects[DT_BYTES].size = sizeof(*dir_size);
310 dir_objects[DT_FILES].data = dir_files;
311 dir_objects[DT_FILES].size = sizeof(*dir_files);
312 return osl(osl_add_row(dir_table, dir_objects));
313 }
314
315 static uint32_t num_uids;
316
317 static int open_user_table(struct user_info *ui, int create)
318 {
319 int ret;
320
321 ui->desc = para_malloc(sizeof(*ui->desc));
322 ui->desc->num_columns = NUM_UT_COLUMNS;
323 ui->desc->flags = 0;
324 ui->desc->column_descriptions = user_table_cols;
325 ui->desc->dir = para_strdup(conf.database_dir_arg);
326 ui->desc->name = make_message("%u", (unsigned)ui->uid);
327 INFO_LOG(".............................uid #%u: %u\n",
328 (unsigned)num_uids, (unsigned)ui->uid);
329 if (create) {
330 ret = osl(osl_create_table(ui->desc));
331 if (ret < 0)
332 goto err;
333 num_uids++;
334 }
335 ret = osl(osl_open_table(ui->desc, &ui->table));
336 if (ret < 0)
337 goto err;
338 return 1;
339 err:
340 free((char *)ui->desc->name);
341 free((char *)ui->desc->dir);
342 free(ui->desc);
343 ui->desc->name = NULL;
344 ui->desc->dir = NULL;
345 ui->desc = NULL;
346 ui->table = NULL;
347 ui->flags = 0;
348 return ret;
349 }
350
351 #define uid_hash_bits 8
352 static uint32_t uid_hash_table_size = 1 << uid_hash_bits;
353 #define PRIME1 0x811c9dc5
354 #define PRIME2 0x01000193
355
356 static void create_hash_table(void)
357 {
358 uid_hash_table = para_calloc(uid_hash_table_size
359 * sizeof(struct user_info));
360 }
361
362 static void free_hash_table(void)
363 {
364 free(uid_hash_table);
365 uid_hash_table = NULL;
366 }
367
368 static int create_tables(void)
369 {
370 int ret;
371
372 dir_table_desc.dir = para_strdup(conf.database_dir_arg);
373 ret = osl(osl_create_table(&dir_table_desc));
374 if (ret < 0)
375 return ret;
376 create_hash_table();
377 return 1;
378 }
379
380 /*
381 * We use a hash table of size s=2^uid_hash_bits to map the uids into the
382 * interval [0..s]. Hash collisions are treated by open addressing, i.e.
383 * unused slots in the table are used to store different uids that hash to the
384 * same slot.
385 *
386 * If a hash collision occurs, different slots are successively probed in order
387 * to find an unused slot for the new uid. Probing is implemented via a second
388 * hash function that maps the uid to h=(uid * PRIME2) | 1, which is always an
389 * odd number.
390 *
391 * An odd number is sufficient to make sure each entry of the hash table gets
392 * probed for probe_num between 0 and s-1 because s is a power of two, hence
393 * the second hash value has never a common divisor with the hash table size.
394 * IOW: h is invertible in the ring [0..s].
395 */
396 static uint32_t double_hash(uint32_t uid, uint32_t probe_num)
397 {
398 return (uid * PRIME1 + ((uid * PRIME2) | 1) * probe_num)
399 % uid_hash_table_size;
400 }
401
402 #define FOR_EACH_USER(ui) for (ui = uid_hash_table; ui && ui < uid_hash_table \
403 + uid_hash_table_size; ui++)
404
405 enum search_uid_flags {
406 OPEN_USER_TABLE = 1,
407 CREATE_USER_TABLE = 2,
408 };
409
410 static int uid_is_admissible(uint32_t uid)
411 {
412 int i;
413
414 for (i = 0; i < conf.uid_given; i++) {
415 struct uid_range *ur = admissible_uids + i;
416
417 if (ur->low <= uid && ur->high >= uid)
418 break;
419 }
420 i = !conf.uid_given || i < conf.uid_given;
421 DEBUG_LOG("uid %u is %sadmissible\n", (unsigned)uid,
422 i? "" : "not ");
423 return i;
424 }
425
426 static int search_uid(uint32_t uid, enum search_uid_flags flags,
427 struct user_info **ui_ptr)
428 {
429 uint32_t p;
430
431 for (p = 0; p < uid_hash_table_size; p++) {
432 struct user_info *ui = uid_hash_table + double_hash(uid, p);
433
434 if (!ui_used(ui)) {
435 int ret;
436 if (!flags)
437 return -E_BAD_UID;
438 ui->uid = uid;
439 ui->flags |= UI_FL_SLOT_USED;
440 if (!uid_is_admissible(uid))
441 return 0;
442 ui->flags |= UI_FL_ADMISSIBLE;
443 ret = open_user_table(ui, flags & CREATE_USER_TABLE);
444 if (ret < 0)
445 return ret;
446
447 if (ui_ptr)
448 *ui_ptr = ui;
449 return 1;
450 }
451 if (ui->uid != uid)
452 continue;
453 if (ui_ptr)
454 *ui_ptr = ui;
455 return 0;
456 }
457 return flags? -E_HASH_TABLE_OVERFLOW : -E_BAD_UID;
458 }
459
460 static int update_user_row(struct osl_table *t, uint64_t dir_num,
461 uint64_t *add)
462 {
463 struct osl_row *row;
464 struct osl_object obj = {.data = &dir_num, .size = sizeof(dir_num)};
465
466 int ret = osl(osl_get_row(t, UT_DIR_NUM, &obj, &row));
467
468 if (ret == -E_OSL && osl_errno != E_OSL_RB_KEY_NOT_FOUND)
469 return ret;
470 if (ret < 0) { /* this is the first file we add */
471 struct osl_object objects[NUM_UT_COLUMNS];
472 uint64_t num_files = 1;
473
474 objects[UT_DIR_NUM].data = &dir_num;
475 objects[UT_DIR_NUM].size = sizeof(dir_num);
476 objects[UT_BYTES].data = add;
477 objects[UT_BYTES].size = sizeof(*add);
478 objects[UT_FILES].data = &num_files;
479 objects[UT_FILES].size = sizeof(num_files);
480 INFO_LOG("######################### ret: %d\n", ret);
481 ret = osl(osl_add_row(t, objects));
482 INFO_LOG("######################### ret: %d\n", ret);
483 return ret;
484 } else { /* add size and increment file count */
485 uint64_t num;
486 struct osl_object obj1, obj2 = {.data = &num, .size = sizeof(num)};
487
488 ret = osl(osl_get_object(t, row, UT_BYTES, &obj1));
489 if (ret < 0)
490 return ret;
491 num = *(uint64_t *)obj1.data + *add;
492 ret = osl(osl_update_object(t, row, UT_BYTES, &obj2));
493 if (ret < 0)
494 return ret;
495 ret = osl(osl_get_object(t, row, UT_FILES, &obj1));
496 if (ret < 0)
497 return ret;
498 num = *(uint64_t *)obj1.data + 1;
499 return osl(osl_update_object(t, row, UT_FILES, &obj2));
500 }
501 }
502
503 static uint64_t num_dirs;
504 static uint64_t num_files;
505 static uint64_t num_bytes;
506
507 int scan_dir(char *dirname, uint64_t *parent_dir_num)
508 {
509 DIR *dir;
510 struct dirent *entry;
511 int ret, cwd_fd, ret2;
512 uint64_t dir_size = 0, dir_files = 0;
513 uint64_t this_dir_num = ++num_dirs;
514
515 DEBUG_LOG("----------------- %llu: %s\n", (long long unsigned)num_dirs, dirname);
516 ret = para_opendir(dirname, &dir, &cwd_fd);
517 if (ret < 0) {
518 if (ret != -ERRNO_TO_ERROR(EACCES))
519 return ret;
520 WARNING_LOG("permission denied for %s\n", dirname);
521 return 1;
522 }
523 while ((entry = readdir(dir))) {
524 mode_t m;
525 struct stat s;
526 uint32_t uid;
527 uint64_t size;
528 struct user_info *ui;
529
530 if (!strcmp(entry->d_name, "."))
531 continue;
532 if (!strcmp(entry->d_name, ".."))
533 continue;
534 if (lstat(entry->d_name, &s) == -1) {
535 WARNING_LOG("lstat error for %s/%s\n", dirname,
536 entry->d_name);
537 continue;
538 }
539 m = s.st_mode;
540 if (!S_ISREG(m) && !S_ISDIR(m))
541 continue;
542 if (S_ISDIR(m)) {
543 ret = scan_dir(entry->d_name, &this_dir_num);
544 if (ret < 0)
545 goto out;
546 continue;
547 }
548 /* regular file */
549 size = s.st_size;
550 dir_size += size;
551 num_bytes += size;
552 dir_files++;
553 num_files++;
554 uid = s.st_uid;
555 ret = search_uid(uid, CREATE_USER_TABLE | OPEN_USER_TABLE, &ui);
556 if (ret < 0)
557 goto out;
558 ui->bytes += size;
559 ui->files++;
560 ret = update_user_row(ui->table, this_dir_num, &size);
561 if (ret < 0)
562 goto out;
563 }
564 ret = add_directory(dirname, &this_dir_num, parent_dir_num,
565 &dir_size, &dir_files);
566 out:
567 closedir(dir);
568 ret2 = para_fchdir(cwd_fd);
569 if (ret2 < 0 && ret >= 0)
570 ret = ret2;
571 close(cwd_fd);
572 return ret;
573 }
574
575 static int get_dir_name_by_number(uint64_t *dirnum, char **name)
576 {
577 char *result = NULL, *tmp;
578 struct osl_row *row;
579 uint64_t val = *dirnum;
580 struct osl_object obj = {.data = &val, .size = sizeof(val)};
581 int ret;
582
583 again:
584 ret = osl(osl_get_row(dir_table, DT_NUM, &obj, &row));
585 if (ret < 0)
586 goto out;
587 ret = osl(osl_get_object(dir_table, row, DT_NAME, &obj));
588 if (ret < 0)
589 goto out;
590 if (result) {
591 tmp = make_message("%s/%s", (char *)obj.data, result);
592 free(result);
593 result = tmp;
594 } else
595 result = para_strdup((char *)obj.data);
596 ret = osl(osl_get_object(dir_table, row, DT_PARENT_NUM, &obj));
597 if (ret < 0)
598 goto out;
599 val = *(uint64_t *)obj.data;
600 if (val)
601 goto again;
602 out:
603 if (ret < 0) {
604 free(result);
605 *name = NULL;
606 } else
607 *name = result;
608 return ret;
609 }
610
611 static int get_dir_name_of_row(struct osl_row *dir_table_row, char **name)
612 {
613 struct osl_object obj;
614 int ret;
615 char *this_dir, *prefix = NULL;
616
617 *name = NULL;
618 ret = osl(osl_get_object(dir_table, dir_table_row, DT_NAME, &obj));
619 if (ret < 0)
620 return ret;
621 this_dir = para_strdup((char *)obj.data);
622 ret = osl(osl_get_object(dir_table, dir_table_row, DT_PARENT_NUM, &obj));
623 if (ret < 0)
624 goto out;
625 if (!*(uint64_t *)obj.data) {
626 *name = this_dir;
627 return 1;
628 }
629 ret = get_dir_name_by_number((uint64_t *)obj.data, &prefix);
630 if (ret < 0)
631 goto out;
632 *name = make_message("%s/%s", prefix, this_dir);
633 free(prefix);
634 ret = 1;
635 out:
636 free(this_dir);
637 return ret;
638 }
639
640 const uint64_t size_unit_divisors[] = {
641 [size_unit_arg_b] = 1ULL,
642 [size_unit_arg_k] = 1024ULL,
643 [size_unit_arg_m] = 1024ULL * 1024ULL,
644 [size_unit_arg_g] = 1024ULL * 1024ULL * 1024ULL,
645 [size_unit_arg_t] = 1024ULL * 1024ULL * 1024ULL * 1024ULL,
646 };
647
648 const uint64_t count_unit_divisors[] = {
649
650 [count_unit_arg_n] = 1ULL,
651 [count_unit_arg_k] = 1000ULL,
652 [count_unit_arg_m] = 1000ULL * 1000ULL,
653 [count_unit_arg_g] = 1000ULL * 1000ULL * 1000ULL,
654 [count_unit_arg_t] = 1000ULL * 1000ULL * 1000ULL * 1000ULL,
655 };
656
657 const char size_unit_abbrevs[] = " BKMGT";
658 const char count_unit_abbrevs[] = " kmgt";
659
660 static enum enum_size_unit format_size_value(enum enum_size_unit unit,
661 uint64_t value, int print_unit, char *result)
662 {
663 enum enum_size_unit u = unit;
664 char unit_buf[2] = "\0\0";
665
666 if (unit == size_unit_arg_h) /* human readable */
667 for (u = size_unit_arg_b; u < size_unit_arg_t &&
668 value > size_unit_divisors[u + 1]; u++)
669 ; /* nothing */
670 if (print_unit)
671 unit_buf[0] = size_unit_abbrevs[u];
672 sprintf(result, "%llu%s",
673 (long long unsigned)value / size_unit_divisors[u], unit_buf);
674 return u;
675 }
676
677 static enum enum_count_unit format_count_value(enum enum_count_unit unit,
678 uint64_t value, int print_unit, char *result)
679 {
680 enum enum_count_unit u = unit;
681 char unit_buf[2] = "\0\0";
682
683 if (unit == count_unit_arg_h) /* human readable */
684 for (u = count_unit_arg_n; u < count_unit_arg_t &&
685 value > count_unit_divisors[u + 1]; u++)
686 ; /* nothing */
687 if (print_unit)
688 unit_buf[0] = count_unit_abbrevs[u];
689 sprintf(result, "%llu%s",
690 (long long unsigned)value / count_unit_divisors[u], unit_buf);
691 return u;
692 }
693
694 enum global_stats_flags {
695 GSF_PRINT_DIRNAME = 1,
696 GSF_PRINT_BYTES = 2,
697 GSF_PRINT_FILES = 4,
698 GSF_COMPUTE_SUMMARY = 8,
699 };
700
701 struct global_stats_info {
702 uint32_t count;
703 int ret;
704 int osl_errno;
705 enum global_stats_flags flags;
706 };
707
708 static int global_stats_loop_function(struct osl_row *row, void *data)
709 {
710 struct global_stats_info *gsi = data;
711 struct osl_object obj;
712 char *dirname, formated_value[FORMATED_VALUE_SIZE];
713 int ret, summary = gsi->flags & GSF_COMPUTE_SUMMARY;
714
715 if (!gsi->count && !summary) {
716 ret = -E_LOOP_COMPLETE;
717 goto err;
718 }
719 if (summary || (gsi->count && (gsi->flags & GSF_PRINT_FILES))) {
720 uint64_t files;
721 ret = osl(osl_get_object(dir_table, row, DT_FILES, &obj));
722 if (ret < 0)
723 goto err;
724 files = *(uint64_t *)obj.data;
725 if (gsi->count && (gsi->flags & GSF_PRINT_FILES)) {
726 format_count_value(conf.count_unit_arg, files,
727 conf.count_unit_arg == count_unit_arg_h,
728 formated_value);
729 printf("\t%s%s", formated_value,
730 (gsi->flags & (GSF_PRINT_BYTES | GSF_PRINT_DIRNAME))?
731 "\t" : "\n");
732 }
733 if (summary)
734 num_files += files;
735 }
736 if (summary || (gsi->count && (gsi->flags & GSF_PRINT_BYTES))) {
737 uint64_t bytes;
738 ret = osl(osl_get_object(dir_table, row, DT_BYTES, &obj));
739 if (ret < 0)
740 goto err;
741 bytes = *(uint64_t *)obj.data;
742 if (gsi->count && (gsi->flags & GSF_PRINT_BYTES)) {
743 format_size_value(conf.size_unit_arg, bytes,
744 conf.size_unit_arg == size_unit_arg_h,
745 formated_value);
746 printf("%s%s%s",
747 (gsi->flags & GSF_PRINT_FILES)? "" : "\t",
748 formated_value,
749 (gsi->flags & GSF_PRINT_DIRNAME)? "\t" : "\n"
750 );
751 }
752 if (summary) {
753 num_bytes += bytes;
754 num_dirs++;
755 }
756 }
757 if (gsi->count && (gsi->flags & GSF_PRINT_DIRNAME)) {
758 ret = get_dir_name_of_row(row, &dirname);
759 if (ret < 0)
760 goto err;
761 printf("%s%s\n",
762 (gsi->flags & (GSF_PRINT_BYTES | GSF_PRINT_FILES))? "" : "\t",
763 dirname);
764 }
765 if (gsi->count > 0)
766 gsi->count--;
767 return 1;
768 err:
769 gsi->ret = ret;
770 gsi->osl_errno = (ret == -E_OSL)? osl_errno : 0;
771 return -1;
772 }
773
774 static void print_id_stats(void)
775 {
776 struct user_info *ui;
777
778 printf("User summary "
779 "(uid/dirs%s/files%s/size%s):\n",
780 count_unit_buf, count_unit_buf, size_unit_buf);
781 FOR_EACH_USER(ui) {
782 char formated_dir_count[FORMATED_VALUE_SIZE],
783 formated_file_count[FORMATED_VALUE_SIZE],
784 formated_bytes[FORMATED_VALUE_SIZE ];
785 if (!ui_used(ui) || !ui_admissible(ui))
786 continue;
787 format_count_value(conf.count_unit_arg, ui->dirs,
788 conf.count_unit_arg == count_unit_arg_h,
789 formated_dir_count);
790 format_count_value(conf.count_unit_arg, ui->files,
791 conf.count_unit_arg == count_unit_arg_h,
792 formated_file_count);
793 format_size_value(conf.size_unit_arg, ui->bytes,
794 conf.size_unit_arg == size_unit_arg_h,
795 formated_bytes);
796 printf("\t%u\t%s\t%s\t%s\n", (unsigned)ui->uid,
797 formated_dir_count,
798 formated_file_count,
799 formated_bytes
800 );
801 }
802 }
803
804 enum user_stats_flags {
805 USF_PRINT_DIRNAME = 1,
806 USF_PRINT_BYTES = 2,
807 USF_PRINT_FILES = 4,
808 USF_COMPUTE_SUMMARY = 8,
809 };
810
811 struct user_stats_info {
812 uint32_t count;
813 enum user_stats_flags flags;
814 int ret;
815 int osl_errno;
816 struct user_info *ui;
817 };
818
819 static int user_stats_loop_function(struct osl_row *row, void *data)
820 {
821 struct user_stats_info *usi = data;
822 struct osl_object obj;
823 int ret, summary = usi->flags & GSF_COMPUTE_SUMMARY;
824 char formated_value[FORMATED_VALUE_SIZE];
825
826 if (!usi->count && !summary) {
827 ret = -E_LOOP_COMPLETE;
828 goto err;
829 }
830 if (summary || (usi->count && (usi->flags & USF_PRINT_FILES))) {
831 uint64_t files;
832 ret = osl(osl_get_object(usi->ui->table, row, UT_FILES, &obj));
833 if (ret < 0)
834 goto err;
835 files = *(uint64_t *)obj.data;
836 if (usi->count && (usi->flags & USF_PRINT_FILES)) {
837 format_count_value(conf.count_unit_arg, files,
838 conf.count_unit_arg == count_unit_arg_h,
839 formated_value);
840 printf("\t%s%s", formated_value,
841 (usi->flags & (USF_PRINT_BYTES | USF_PRINT_DIRNAME))?
842 "\t" : "\n"
843 );
844 }
845 if (summary)
846 usi->ui->files += files;
847 }
848 if (summary || (usi->count && (usi->flags & USF_PRINT_BYTES))) {
849 uint64_t bytes;
850 ret = osl(osl_get_object(usi->ui->table, row, UT_BYTES, &obj));
851 if (ret < 0)
852 goto err;
853 bytes = *(uint64_t *)obj.data;
854 if (usi->count && (usi->flags & USF_PRINT_BYTES)) {
855 format_size_value(conf.size_unit_arg, bytes,
856 conf.size_unit_arg == size_unit_arg_h,
857 formated_value);
858 printf("%s%s%s",
859 (usi->flags & USF_PRINT_FILES)? "" : "\t",
860 formated_value,
861 usi->flags & USF_PRINT_DIRNAME? "\t" : "\n"
862 );
863 }
864 if (summary) {
865 usi->ui->bytes += bytes;
866 usi->ui->dirs++;
867 }
868
869 }
870 if (usi->count && (usi->flags & USF_PRINT_DIRNAME)) {
871 char *dirname;
872 ret = osl(osl_get_object(usi->ui->table, row, UT_DIR_NUM, &obj));
873 if (ret < 0)
874 goto err;
875 ret = get_dir_name_by_number((uint64_t *)obj.data, &dirname);
876 if (ret < 0)
877 goto err;
878 printf("%s%s\n",
879 (usi->flags & (USF_PRINT_BYTES | USF_PRINT_FILES))? "" : "\t",
880 dirname);
881 }
882 if (usi->count > 0)
883 usi->count--;
884 return 1;
885 err:
886 usi->ret = ret;
887 usi->osl_errno = (ret == -E_OSL)? osl_errno : 0;
888 return -1;
889 }
890
891 static int check_loop_return(int ret, int loop_ret, int loop_osl_errno)
892 {
893 if (ret >= 0)
894 return ret;
895 assert(ret == -E_OSL);
896 if (osl_errno != E_OSL_LOOP)
897 /* error not caused by loop function returning negative. */
898 return ret;
899 assert(loop_ret < 0);
900 if (loop_ret == -E_LOOP_COMPLETE) /* no error */
901 return 1;
902 if (loop_ret == -E_OSL) { /* osl error in loop function */
903 assert(loop_osl_errno);
904 osl_errno = loop_osl_errno;
905 }
906 return loop_ret;
907 }
908
909 static int adu_loop_reverse(struct osl_table *t, unsigned col_num, void *private_data,
910 osl_rbtree_loop_func *func, int *loop_ret, int *loop_osl_errno)
911 {
912 int ret = osl(osl_rbtree_loop_reverse(t, col_num, private_data, func));
913 return check_loop_return(ret, *loop_ret, *loop_osl_errno);
914 }
915
916 static int print_user_stats(void)
917 {
918 struct user_info *ui;
919 int ret;
920
921 FOR_EACH_USER(ui) {
922 struct user_stats_info usi = {
923 .count = conf.limit_arg,
924 .ui = ui
925 };
926 if (!ui_used(ui) || !ui_admissible(ui))
927 continue;
928 usi.flags = USF_PRINT_DIRNAME | USF_PRINT_BYTES | USF_COMPUTE_SUMMARY;
929 printf("uid %u, by size%s:\n",
930 (unsigned) ui->uid, size_unit_buf);
931 ret = adu_loop_reverse(ui->table, UT_BYTES, &usi, user_stats_loop_function,
932 &usi.ret, &usi.osl_errno);
933 if (ret < 0)
934 return ret;
935 printf("\nuid %u, by file count%s:\n",
936 (unsigned) ui->uid, count_unit_buf);
937 usi.count = conf.limit_arg,
938 usi.flags = USF_PRINT_DIRNAME | USF_PRINT_FILES;
939 ret = adu_loop_reverse(ui->table, UT_FILES, &usi, user_stats_loop_function,
940 &usi.ret, &usi.osl_errno);
941 if (ret < 0)
942 return ret;
943 printf("\n");
944 }
945 return 1;
946 }
947
948 static void print_global_summary(void)
949 {
950 char d[FORMATED_VALUE_SIZE], f[FORMATED_VALUE_SIZE],
951 s[FORMATED_VALUE_SIZE];
952 enum enum_count_unit ud, uf;
953 enum enum_size_unit us;
954
955 ud = format_count_value(conf.count_unit_arg, num_dirs, 0, d);
956 uf = format_count_value(conf.count_unit_arg, num_files, 0, f);
957 us = format_size_value(conf.size_unit_arg, num_bytes, 0, s);
958
959 printf("Global summary "
960 "(dirs(%c)/files(%c)/size(%c))\n"
961 "\t%s\t%s\t%s\n\n",
962 count_unit_abbrevs[ud],
963 count_unit_abbrevs[uf],
964 size_unit_abbrevs[us],
965 d, f, s
966 );
967
968 }
969
970 static int print_statistics(void)
971 {
972 int ret;
973 struct global_stats_info gsi = {
974 .count = conf.limit_arg,
975 .flags = GSF_PRINT_DIRNAME | GSF_PRINT_BYTES | GSF_COMPUTE_SUMMARY
976 };
977
978 printf("By size%s:\n",
979 size_unit_buf);
980 ret = adu_loop_reverse(dir_table, DT_BYTES, &gsi,
981 global_stats_loop_function, &gsi.ret, &gsi.osl_errno);
982 if (ret < 0)
983 return ret;
984 printf("\n");
985
986 gsi.count = conf.limit_arg;
987 gsi.flags = GSF_PRINT_DIRNAME | GSF_PRINT_FILES;
988 printf("By file count%s:\n",
989 count_unit_buf);
990 ret = adu_loop_reverse(dir_table, DT_FILES, &gsi,
991 global_stats_loop_function, &gsi.ret, &gsi.osl_errno);
992 if (ret < 0)
993 return ret;
994 printf("\n");
995 print_global_summary();
996 print_user_stats();
997 print_id_stats();
998 return 1;
999 }
1000
1001 static char *get_uid_list_name(void)
1002 {
1003 return make_message("%s/uid_list", conf.database_dir_arg);
1004 }
1005
1006 static int write_uid_list(void)
1007 {
1008 char *buf, *filename;
1009 uint32_t count = 0;
1010 struct user_info *ui;
1011 size_t size = num_uids * sizeof(uint32_t);
1012 int ret;
1013
1014 if (!num_uids)
1015 return 0;
1016 buf = para_malloc(size);
1017 FOR_EACH_USER(ui) {
1018 if (!ui_used(ui) || !ui_admissible(ui))
1019 continue;
1020 DEBUG_LOG("saving uid %u\n", (unsigned) ui->uid);
1021 write_u32(buf + count++ * sizeof(uint32_t), ui->uid);
1022 }
1023 filename = get_uid_list_name();
1024 ret = para_write_file(filename, buf, size);
1025 free(filename);
1026 free(buf);
1027 return ret;
1028 }
1029
1030 static int open_dir_table(void)
1031 {
1032 if (!dir_table_desc.dir) /* we did not create the table */
1033 dir_table_desc.dir = para_strdup(conf.database_dir_arg);
1034 return osl(osl_open_table(&dir_table_desc, &dir_table));
1035 }
1036
1037 static void close_dir_table(void)
1038 {
1039 int ret;
1040
1041 if (!dir_table)
1042 return;
1043 ret = osl(osl_close_table(dir_table, OSL_MARK_CLEAN));
1044 if (ret < 0)
1045 ERROR_LOG("failed to close dir table: %s\n", adu_strerror(-ret));
1046 free((char *)dir_table_desc.dir);
1047 dir_table = NULL;
1048 }
1049
1050 static void close_user_table(struct user_info *ui)
1051 {
1052 int ret;
1053
1054 if (!ui || !ui_used(ui) || !ui_admissible(ui))
1055 return;
1056 ret = osl(osl_close_table(ui->table, OSL_MARK_CLEAN));
1057 if (ret < 0)
1058 ERROR_LOG("failed to close user table %u: %s\n",
1059 (unsigned) ui->uid, adu_strerror(-ret));
1060 free((char *)ui->desc->name);
1061 ui->desc->name = NULL;
1062 free((char *)ui->desc->dir);
1063 ui->desc->dir = NULL;
1064 free(ui->desc);
1065 ui->desc = NULL;
1066 ui->table = NULL;
1067 ui->flags = 0;
1068 }
1069
1070 static void close_user_tables(void)
1071 {
1072 struct user_info *ui;
1073
1074 FOR_EACH_USER(ui)
1075 close_user_table(ui);
1076 }
1077
1078 static void close_all_tables(void)
1079 {
1080 close_dir_table();
1081 close_user_tables();
1082 free_hash_table();
1083 }
1084
1085 static int com_create()
1086 {
1087 uint64_t zero = 0ULL;
1088 int ret = create_tables();
1089
1090 if (ret < 0)
1091 return ret;
1092 ret = open_dir_table();
1093 if (ret < 0)
1094 return ret;
1095 ret = scan_dir(conf.base_dir_arg, &zero);
1096 if (ret < 0)
1097 goto out;
1098 ret = write_uid_list();
1099 out:
1100 close_all_tables();
1101 return ret;
1102 }
1103
1104 static int read_uid_file(void)
1105 {
1106 size_t size;
1107 uint32_t n;
1108 char *filename = get_uid_list_name(), *map;
1109 int ret = mmap_full_file(filename, O_RDONLY, (void **)&map, &size, NULL);
1110
1111 if (ret < 0) {
1112 INFO_LOG("failed to map %s\n", filename);
1113 free(filename);
1114 return ret;
1115 }
1116 num_uids = size / 4;
1117 INFO_LOG("found %u uids in %s\n", (unsigned)num_uids, filename);
1118 free(filename);
1119 /* hash table size should be a power of two and larger than the number of uids */
1120 uid_hash_table_size = 4;
1121 while (uid_hash_table_size < num_uids)
1122 uid_hash_table_size *= 2;
1123 create_hash_table();
1124 for (n = 0; n < num_uids; n++) {
1125 uint32_t uid = read_u32(map + n * sizeof(uid));
1126 ret = search_uid(uid, OPEN_USER_TABLE, NULL);
1127 if (ret < 0)
1128 goto out;
1129 }
1130 out:
1131 para_munmap(map, size);
1132 return ret;
1133 }
1134
1135 static int com_select(void)
1136 {
1137 int ret;
1138
1139 if (conf.count_unit_arg != count_unit_arg_h)
1140 count_unit_buf[1] = count_unit_abbrevs[conf.count_unit_arg];
1141 else
1142 count_unit_buf[0] = '\0';
1143 if (conf.size_unit_arg != size_unit_arg_h)
1144 size_unit_buf[1] = size_unit_abbrevs[conf.size_unit_arg];
1145 else
1146 size_unit_buf[0] = '\0';
1147
1148 ret = open_dir_table();
1149 if (ret < 0)
1150 return ret;
1151 ret = read_uid_file();
1152 if (ret < 0)
1153 return ret;
1154 ret = print_statistics();
1155 close_all_tables();
1156 return ret;
1157 }
1158
1159 static int check_args(void)
1160 {
1161 int i, ret;
1162
1163 /* remove trailing slashes from base-dir arg */
1164 if (conf.base_dir_given) {
1165 size_t len = strlen(conf.base_dir_arg);
1166 for (;;) {
1167 if (!len) /* empty string */
1168 return -ERRNO_TO_ERROR(EINVAL);
1169 if (!--len) /* length 1 is always OK */
1170 break;
1171 if (conf.base_dir_arg[len] != '/')
1172 break; /* no trailing slash, also OK */
1173 conf.base_dir_arg[len] = '\0';
1174 }
1175 }
1176 if (!conf.uid_given)
1177 return 0;
1178 admissible_uids = para_malloc(conf.uid_given * sizeof(*admissible_uids));
1179 for (i = 0; i < conf.uid_given; i++) {
1180 ret = parse_uid_range(conf.uid_arg[i], admissible_uids + i);
1181 if (ret < 0)
1182 goto err;
1183 }
1184 return 1;
1185 err:
1186 free(admissible_uids);
1187 admissible_uids = NULL;
1188 return ret;
1189 }
1190
1191 int main(int argc, char **argv)
1192 {
1193 int ret;
1194 struct cmdline_parser_params params = {
1195 .override = 0,
1196 .initialize = 1,
1197 .check_required = 0,
1198 .check_ambiguity = 0,
1199 .print_errors = 1
1200 };
1201
1202 cmdline_parser_ext(argc, argv, &conf, &params); /* aborts on errors */
1203 ret = check_args();
1204 if (ret < 0)
1205 goto out;
1206 ret = -E_SYNTAX;
1207 if (conf.select_given)
1208 ret = com_select();
1209 else
1210 ret = com_create();
1211 if (ret < 0)
1212 goto out;
1213 out:
1214 free(admissible_uids);
1215 if (ret < 0) {
1216 ERROR_LOG("%s\n", adu_strerror(-ret));
1217 return -EXIT_FAILURE;
1218 }
1219 return EXIT_SUCCESS;
1220 }