Implement --output.
[adu.git] / select.c
1 /*
2 * Copyright (C) 2008 Andre Noll <maan@systemlinux.org>
3 *
4 * Licensed under the GPL v2. For licencing details see COPYING.
5 */
6
7 /** \file select.c The select mode of adu. */
8
9 #include <dirent.h> /* readdir() */
10 #include "adu.h"
11 #include "gcc-compat.h"
12 #include "cmdline.h"
13 #include "fd.h"
14 #include "string.h"
15 #include "error.h"
16 #include "portable_io.h"
17 #include "select.cmdline.h"
18
19 /** Global dir count. */
20 static uint64_t num_dirs;
21 /** Global files count. */
22 static uint64_t num_files;
23 /** Global bytes count. */
24 static uint64_t num_bytes;
25
26 /** The decimal representation of an uint64_t never exceeds that size. */
27 #define FORMATED_VALUE_SIZE 25
28
29 /* these get filled in by the select command. */
30 static char count_unit_buf[4] = "( )", size_unit_buf[4] = "( )";
31
32 enum global_stats_flags {
33 GSF_PRINT_DIRNAME = 1,
34 GSF_PRINT_BYTES = 2,
35 GSF_PRINT_FILES = 4,
36 GSF_COMPUTE_SUMMARY = 8,
37 };
38
39 struct global_stats_info {
40 uint32_t count;
41 int ret;
42 int osl_errno;
43 enum global_stats_flags flags;
44 };
45
46 enum user_stats_flags {
47 USF_PRINT_DIRNAME = 1,
48 USF_PRINT_BYTES = 2,
49 USF_PRINT_FILES = 4,
50 USF_COMPUTE_SUMMARY = 8,
51 };
52
53 struct user_stats_info {
54 uint32_t count;
55 enum user_stats_flags flags;
56 int ret;
57 int osl_errno;
58 struct user_info *ui;
59 };
60
61 static const uint64_t size_unit_divisors[] = {
62 [size_unit_arg_b] = 1ULL,
63 [size_unit_arg_k] = 1024ULL,
64 [size_unit_arg_m] = 1024ULL * 1024ULL,
65 [size_unit_arg_g] = 1024ULL * 1024ULL * 1024ULL,
66 [size_unit_arg_t] = 1024ULL * 1024ULL * 1024ULL * 1024ULL,
67 };
68
69 static const uint64_t count_unit_divisors[] = {
70
71 [count_unit_arg_n] = 1ULL,
72 [count_unit_arg_k] = 1000ULL,
73 [count_unit_arg_m] = 1000ULL * 1000ULL,
74 [count_unit_arg_g] = 1000ULL * 1000ULL * 1000ULL,
75 [count_unit_arg_t] = 1000ULL * 1000ULL * 1000ULL * 1000ULL,
76 };
77
78 static const char size_unit_abbrevs[] = " BKMGT";
79 static const char count_unit_abbrevs[] = " kmgt";
80 static enum enum_size_unit format_size_value(enum enum_size_unit unit,
81 uint64_t value, int print_unit, char *result)
82 {
83 enum enum_size_unit u = unit;
84 char unit_buf[2] = "\0\0";
85
86 if (unit == size_unit_arg_h) /* human readable */
87 for (u = size_unit_arg_b; u < size_unit_arg_t &&
88 value > size_unit_divisors[u + 1]; u++)
89 ; /* nothing */
90 if (print_unit)
91 unit_buf[0] = size_unit_abbrevs[u];
92 sprintf(result, "%llu%s",
93 (long long unsigned)value / size_unit_divisors[u], unit_buf);
94 return u;
95 }
96
97 static enum enum_count_unit format_count_value(enum enum_count_unit unit,
98 uint64_t value, int print_unit, char *result)
99 {
100 enum enum_count_unit u = unit;
101 char unit_buf[2] = "\0\0";
102
103 if (unit == count_unit_arg_h) /* human readable */
104 for (u = count_unit_arg_n; u < count_unit_arg_t &&
105 value > count_unit_divisors[u + 1]; u++)
106 ; /* nothing */
107 if (print_unit)
108 unit_buf[0] = count_unit_abbrevs[u];
109 sprintf(result, "%llu%s",
110 (long long unsigned)value / count_unit_divisors[u], unit_buf);
111 return u;
112 }
113
114 static FILE *output_file;
115
116 __printf_1_2 static int output(const char const *fmt, ...)
117 {
118 va_list argp;
119 int ret;
120
121 va_start(argp, fmt);
122 ret = vfprintf(output_file, fmt, argp);
123 va_end(argp);
124 return ret < 0? -E_OUTPUT : 1;
125 }
126
127 static int get_dir_name_by_number(uint64_t *dirnum, char **name)
128 {
129 char *result = NULL, *tmp;
130 struct osl_row *row;
131 uint64_t val = *dirnum;
132 struct osl_object obj;
133 int ret;
134 char *pfx;
135
136 again:
137 obj.data = &val;
138 obj.size = sizeof(val);
139 ret = osl(osl_get_row(dir_table, DT_NUM, &obj, &row));
140 if (ret < 0)
141 goto out;
142 ret = osl(osl_get_object(dir_table, row, DT_PARENT_NUM, &obj));
143 if (ret < 0)
144 goto out;
145 val = *(uint64_t *)obj.data;
146 ret = osl(osl_get_object(dir_table, row, DT_NAME, &obj));
147 if (ret < 0)
148 goto out;
149 pfx = (select_conf.print_base_dir_given || val)? (char *)obj.data : ".";
150 tmp = make_message("%s/%s", pfx, result? result : "");
151 free(result);
152 result = tmp;
153 if (val)
154 goto again;
155 out:
156 if (ret < 0) {
157 free(result);
158 *name = NULL;
159 } else {
160 assert(result);
161 *name = result;
162 }
163 return ret;
164 }
165
166 static int get_dir_name_of_row(struct osl_row *dir_table_row, char **name)
167 {
168 struct osl_object obj;
169 int ret;
170
171 *name = NULL;
172 ret = osl(osl_get_object(dir_table, dir_table_row, DT_NUM, &obj));
173 if (ret < 0)
174 return ret;
175 return get_dir_name_by_number((uint64_t *)obj.data, name);
176 }
177
178 static int user_stats_loop_function(struct osl_row *row, void *data)
179 {
180 struct user_stats_info *usi = data;
181 struct osl_object obj;
182 int ret, summary = usi->flags & GSF_COMPUTE_SUMMARY;
183 char formated_value[FORMATED_VALUE_SIZE];
184
185 check_signals();
186 if (!usi->count && !summary) {
187 ret = -E_LOOP_COMPLETE;
188 goto err;
189 }
190 if (summary || (usi->count && (usi->flags & USF_PRINT_FILES))) {
191 uint64_t files;
192 ret = osl(osl_get_object(usi->ui->table, row, UT_FILES, &obj));
193 if (ret < 0)
194 goto err;
195 files = *(uint64_t *)obj.data;
196 if (usi->count && (usi->flags & USF_PRINT_FILES)) {
197 format_count_value(select_conf.count_unit_arg, files,
198 select_conf.count_unit_arg == count_unit_arg_h,
199 formated_value);
200 ret = output("\t%s%s", formated_value,
201 (usi->flags & (USF_PRINT_BYTES | USF_PRINT_DIRNAME))?
202 "\t" : "\n");
203 if (ret < 0)
204 goto err;
205 }
206 if (summary)
207 usi->ui->files += files;
208 }
209 if (summary || (usi->count && (usi->flags & USF_PRINT_BYTES))) {
210 uint64_t bytes;
211 ret = osl(osl_get_object(usi->ui->table, row, UT_BYTES, &obj));
212 if (ret < 0)
213 goto err;
214 bytes = *(uint64_t *)obj.data;
215 if (usi->count && (usi->flags & USF_PRINT_BYTES)) {
216 format_size_value(select_conf.size_unit_arg, bytes,
217 select_conf.size_unit_arg == size_unit_arg_h,
218 formated_value);
219 ret = output("%s%s%s",
220 (usi->flags & USF_PRINT_FILES)? "" : "\t",
221 formated_value,
222 usi->flags & USF_PRINT_DIRNAME? "\t" : "\n"
223 );
224 if (ret < 0)
225 goto err;
226 }
227 if (summary) {
228 usi->ui->bytes += bytes;
229 usi->ui->dirs++;
230 }
231
232 }
233 if (usi->count && (usi->flags & USF_PRINT_DIRNAME)) {
234 char *dirname;
235 ret = osl(osl_get_object(usi->ui->table, row, UT_DIR_NUM, &obj));
236 if (ret < 0)
237 goto err;
238 ret = get_dir_name_by_number((uint64_t *)obj.data, &dirname);
239 if (ret < 0)
240 goto err;
241 ret = output("%s%s\n",
242 (usi->flags & (USF_PRINT_BYTES | USF_PRINT_FILES))? "" : "\t",
243 dirname);
244 free(dirname);
245 if (ret < 0)
246 goto err;
247 }
248 if (usi->count > 0)
249 usi->count--;
250 return 1;
251 err:
252 usi->ret = ret;
253 usi->osl_errno = (ret == -E_OSL)? osl_errno : 0;
254 return -1;
255 }
256
257 static int global_stats_loop_function(struct osl_row *row, void *data)
258 {
259 struct global_stats_info *gsi = data;
260 struct osl_object obj;
261 char *dirname, formated_value[FORMATED_VALUE_SIZE];
262 int ret, summary = gsi->flags & GSF_COMPUTE_SUMMARY;
263
264 check_signals();
265 if (!gsi->count && !summary) {
266 ret = -E_LOOP_COMPLETE;
267 goto err;
268 }
269 if (summary || (gsi->count && (gsi->flags & GSF_PRINT_FILES))) {
270 uint64_t files;
271 ret = osl(osl_get_object(dir_table, row, DT_FILES, &obj));
272 if (ret < 0)
273 goto err;
274 files = *(uint64_t *)obj.data;
275 if (gsi->count && (gsi->flags & GSF_PRINT_FILES)) {
276 format_count_value(select_conf.count_unit_arg, files,
277 select_conf.count_unit_arg == count_unit_arg_h,
278 formated_value);
279 ret = output("\t%s%s", formated_value,
280 (gsi->flags & (GSF_PRINT_BYTES | GSF_PRINT_DIRNAME))?
281 "\t" : "\n");
282 if (ret < 0)
283 goto err;
284 }
285 if (summary)
286 num_files += files;
287 }
288 if (summary || (gsi->count && (gsi->flags & GSF_PRINT_BYTES))) {
289 uint64_t bytes;
290 ret = osl(osl_get_object(dir_table, row, DT_BYTES, &obj));
291 if (ret < 0)
292 goto err;
293 bytes = *(uint64_t *)obj.data;
294 if (gsi->count && (gsi->flags & GSF_PRINT_BYTES)) {
295 format_size_value(select_conf.size_unit_arg, bytes,
296 select_conf.size_unit_arg == size_unit_arg_h,
297 formated_value);
298 ret = output("%s%s%s",
299 (gsi->flags & GSF_PRINT_FILES)? "" : "\t",
300 formated_value,
301 (gsi->flags & GSF_PRINT_DIRNAME)? "\t" : "\n"
302 );
303 if (ret < 0)
304 goto err;
305 }
306 if (summary) {
307 num_bytes += bytes;
308 num_dirs++;
309 }
310 }
311 if (gsi->count && (gsi->flags & GSF_PRINT_DIRNAME)) {
312 ret = get_dir_name_of_row(row, &dirname);
313 if (ret < 0)
314 goto err;
315 ret = output("%s%s\n",
316 (gsi->flags & (GSF_PRINT_BYTES | GSF_PRINT_FILES))? "" : "\t",
317 dirname);
318 free(dirname);
319 if (ret < 0)
320 goto err;
321 }
322 if (gsi->count > 0)
323 gsi->count--;
324 return 1;
325 err:
326 gsi->ret = ret;
327 gsi->osl_errno = (ret == -E_OSL)? osl_errno : 0;
328 return -1;
329 }
330
331 static int check_loop_return(int ret, int loop_ret, int loop_osl_errno)
332 {
333 if (ret >= 0)
334 return ret;
335 assert(ret == -E_OSL);
336 if (osl_errno != E_OSL_LOOP)
337 /* error not caused by loop function returning negative. */
338 return ret;
339 assert(loop_ret < 0);
340 if (loop_ret == -E_LOOP_COMPLETE) /* no error */
341 return 1;
342 if (loop_ret == -E_OSL) { /* osl error in loop function */
343 assert(loop_osl_errno);
344 osl_errno = loop_osl_errno;
345 }
346 return loop_ret;
347 }
348
349 static int adu_loop_reverse(struct osl_table *t, unsigned col_num, void *private_data,
350 osl_rbtree_loop_func *func, int *loop_ret, int *loop_osl_errno)
351 {
352 int ret = osl(osl_rbtree_loop_reverse(t, col_num, private_data, func));
353 return check_loop_return(ret, *loop_ret, *loop_osl_errno);
354 }
355
356 static int print_global_summary(void)
357 {
358 char d[FORMATED_VALUE_SIZE], f[FORMATED_VALUE_SIZE],
359 s[FORMATED_VALUE_SIZE];
360 enum enum_count_unit ud, uf;
361 enum enum_size_unit us;
362 int ret;
363
364 if (select_conf.no_global_summary_given)
365 return 1;
366 ud = format_count_value(select_conf.count_unit_arg, num_dirs, 0, d);
367 uf = format_count_value(select_conf.count_unit_arg, num_files, 0, f);
368 us = format_size_value(select_conf.size_unit_arg, num_bytes, 0, s);
369
370 if (!select_conf.no_headers_given) {
371 ret = output("Global summary "
372 "(dirs(%c)/files(%c)/size(%c))\n",
373 count_unit_abbrevs[ud],
374 count_unit_abbrevs[uf],
375 size_unit_abbrevs[us]
376 );
377 if (ret < 0)
378 return ret;
379 }
380 return output("\t%s\t%s\t%s\n\n", d, f, s);
381 }
382
383 static int print_user_summary_line(struct user_info *ui, __a_unused void *data)
384 {
385 char formated_dir_count[FORMATED_VALUE_SIZE],
386 formated_file_count[FORMATED_VALUE_SIZE],
387 formated_bytes[FORMATED_VALUE_SIZE ];
388
389 format_count_value(select_conf.count_unit_arg, ui->dirs,
390 select_conf.count_unit_arg == count_unit_arg_h,
391 formated_dir_count);
392 format_count_value(select_conf.count_unit_arg, ui->files,
393 select_conf.count_unit_arg == count_unit_arg_h,
394 formated_file_count);
395 format_size_value(select_conf.size_unit_arg, ui->bytes,
396 select_conf.size_unit_arg == size_unit_arg_h,
397 formated_bytes);
398 return output("\t%s\t%u\t%s\t%s\t%s\n",
399 ui->pw_name? ui->pw_name : "?",
400 (unsigned)ui->uid,
401 formated_dir_count,
402 formated_file_count,
403 formated_bytes
404 );
405 }
406
407 static int name_comp(const void *a, const void *b)
408 {
409 char *x = ((struct user_info *)a)->pw_name;
410 char *y = ((struct user_info *)b)->pw_name;
411
412 if (!x)
413 return 1;
414 if (!y)
415 return -1;
416 return strcmp(x, y);
417 }
418
419 static int uid_comp(const void *a, const void *b)
420 {
421 return -NUM_COMPARE(((struct user_info *)a)->uid,
422 ((struct user_info *)b)->uid);
423 }
424
425 static int dir_count_comp(const void *a, const void *b)
426 {
427 return NUM_COMPARE(((struct user_info *)a)->dirs,
428 ((struct user_info *)b)->dirs);
429 }
430
431 static int file_count_comp(const void *a, const void *b)
432 {
433 return NUM_COMPARE(((struct user_info *)a)->files,
434 ((struct user_info *)b)->files);
435 }
436
437 static int size_comp(const void *a, const void *b)
438 {
439 return NUM_COMPARE(((struct user_info *)a)->bytes,
440 ((struct user_info *)b)->bytes);
441 }
442
443 /*
444 * The comparators for sorting the user summary.
445 *
446 * This is an array of pointers to functions taking two constant void *
447 * pointers and returning an int.
448 */
449 static int (*summary_comparators[])(const void *, const void *) = {
450 [user_summary_sort_arg_name] = name_comp,
451 [user_summary_sort_arg_uid] = uid_comp,
452 [user_summary_sort_arg_dir_count] = dir_count_comp,
453 [user_summary_sort_arg_file_count] = file_count_comp,
454 [user_summary_sort_arg_size] = size_comp,
455 };
456
457 static int print_user_summary(void)
458 {
459 if (select_conf.no_user_summary_given)
460 return 1;
461 if (!select_conf.no_headers_given) {
462 int ret = output("User summary "
463 "(pw_name/uid/dirs%s/files%s/size%s):\n",
464 count_unit_buf, count_unit_buf, size_unit_buf);
465 if (ret < 0)
466 return ret;
467 }
468 sort_hash_table(summary_comparators[select_conf.user_summary_sort_arg]);
469 return for_each_admissible_user(print_user_summary_line, NULL);
470 }
471
472 static int print_user_list(struct user_info *ui, __a_unused void *data)
473 {
474 int ret;
475 struct user_stats_info usi;
476 enum enum_user_list ula = select_conf.user_list_arg;
477 int print_size_list = (ula == user_list_arg_size
478 || ula == user_list_arg_both);
479
480 if (print_size_list) {
481 usi.count = select_conf.limit_arg;
482 usi.ui = ui;
483 usi.flags = USF_PRINT_DIRNAME | USF_PRINT_BYTES | USF_COMPUTE_SUMMARY;
484 if (!select_conf.no_headers_given) {
485 ret = output("%s (uid %u), by size%s:\n",
486 ui->pw_name? ui->pw_name : "?", (unsigned)ui->uid,
487 size_unit_buf);
488 if (ret < 0)
489 return ret;
490 }
491 ret = adu_loop_reverse(ui->table, UT_BYTES, &usi, user_stats_loop_function,
492 &usi.ret, &usi.osl_errno);
493 if (ret < 0)
494 return ret;
495 ret = output("\n");
496 if (ret < 0)
497 return ret;
498 }
499 if (ula == user_list_arg_file_count || ula == user_list_arg_both) {
500 if (!select_conf.no_headers_given) {
501 ret = output("%s (uid %u), by file count%s:\n",
502 ui->pw_name? ui->pw_name : "?", (unsigned)ui->uid,
503 count_unit_buf);
504 if (ret < 0)
505 return ret;
506 }
507 usi.count = select_conf.limit_arg,
508 usi.ui = ui;
509 usi.flags = USF_PRINT_DIRNAME | USF_PRINT_FILES;
510 ret = adu_loop_reverse(ui->table, UT_FILES, &usi, user_stats_loop_function,
511 &usi.ret, &usi.osl_errno);
512 if (ret < 0)
513 return ret;
514 ret = output("\n");
515 if (ret < 0)
516 return ret;
517 }
518 if (ula == user_list_arg_none && !select_conf.no_user_summary_given) {
519 usi.count = select_conf.limit_arg;
520 usi.ui = ui;
521 usi.flags = USF_COMPUTE_SUMMARY;
522 ret = adu_loop_reverse(ui->table, UT_FILES, &usi, user_stats_loop_function,
523 &usi.ret, &usi.osl_errno);
524 if (ret < 0)
525 return ret;
526 }
527 return 1;
528 }
529
530 static int print_user_lists(void)
531 {
532 return for_each_admissible_user(print_user_list, NULL);
533 }
534
535 static int print_global_lists(void)
536 {
537 struct global_stats_info gsi;
538 int ret;
539 enum enum_global_list gla = select_conf.global_list_arg;
540 int print_size_list = (gla == global_list_arg_size
541 || gla == global_list_arg_both);
542
543 if (print_size_list) {
544 gsi.count = select_conf.limit_arg;
545 gsi.flags = GSF_PRINT_DIRNAME | GSF_PRINT_BYTES | GSF_COMPUTE_SUMMARY;
546 if (!select_conf.no_headers_given) {
547 ret = output("By size%s:\n", size_unit_buf);
548 if (ret < 0)
549 return ret;
550 }
551 ret = adu_loop_reverse(dir_table, DT_BYTES, &gsi,
552 global_stats_loop_function, &gsi.ret, &gsi.osl_errno);
553 if (ret < 0)
554 return ret;
555 ret = output("\n");
556 if (ret < 0)
557 return ret;
558 }
559 if (gla == global_list_arg_file_count || gla == global_list_arg_both) {
560 gsi.count = select_conf.limit_arg;
561 gsi.flags = GSF_PRINT_DIRNAME | GSF_PRINT_FILES;
562 if (!print_size_list)
563 gsi.flags |= GSF_COMPUTE_SUMMARY;
564 if (!select_conf.no_headers_given) {
565 ret = output("By file count%s:\n", count_unit_buf);
566 if (ret < 0)
567 return ret;
568 }
569 ret = adu_loop_reverse(dir_table, DT_FILES, &gsi,
570 global_stats_loop_function, &gsi.ret, &gsi.osl_errno);
571 if (ret < 0)
572 return ret;
573 ret = output("\n");
574 if (ret < 0)
575 return ret;
576 }
577 if (gla == global_list_arg_none && !select_conf.no_global_summary_given) {
578 /* must compute summary */
579 gsi.count = select_conf.limit_arg;
580 gsi.flags = GSF_COMPUTE_SUMMARY;
581 ret = adu_loop_reverse(dir_table, DT_FILES, &gsi,
582 global_stats_loop_function, &gsi.ret, &gsi.osl_errno);
583 if (ret < 0)
584 return ret;
585 }
586 return 1;
587 }
588
589 static int print_statistics(void)
590 {
591 int ret;
592
593 ret = print_global_lists();
594 if (ret < 0)
595 return ret;
596 ret = print_global_summary();
597 if (ret < 0)
598 return ret;
599 ret = print_user_lists();
600 if (ret < 0)
601 return ret;
602 ret = print_user_summary();
603 if (ret < 0)
604 return ret;
605 return 1;
606 }
607
608 static int read_uid_file(struct uid_range *admissible_uids)
609 {
610 size_t size;
611 uint32_t n;
612 char *filename = get_uid_list_name(), *map;
613 int ret = mmap_full_file(filename, O_RDONLY, (void **)&map, &size, NULL);
614 unsigned bits;
615
616 if (ret < 0) {
617 INFO_LOG("failed to map %s\n", filename);
618 free(filename);
619 return ret;
620 }
621 num_uids = size / 4;
622 INFO_LOG("found %u uids in %s\n", (unsigned)num_uids, filename);
623 free(filename);
624 /*
625 * Compute number of hash table bits. The hash table size must be a
626 * power of two and larger than the number of uids.
627 */
628 bits = 2;
629 while (1 << bits < num_uids)
630 bits++;
631 create_hash_table(bits);
632 for (n = 0; n < num_uids; n++) {
633 uint32_t uid = read_u32(map + n * sizeof(uid));
634 ret = search_uid(uid, admissible_uids, OPEN_USER_TABLE, NULL);
635 if (ret < 0)
636 goto out;
637 }
638 out:
639 adu_munmap(map, size);
640 return ret;
641 }
642
643 int run_select_query(struct uid_range *admissible_uids)
644 {
645 int ret;
646
647 if (select_conf.output_given && strcmp(select_conf.output_arg, "-")) {
648 output_file = fopen(select_conf.output_arg, "w");
649 if (!output_file)
650 return -ERRNO_TO_ERROR(errno);
651 } else
652 output_file = stdout;
653
654 if (select_conf.count_unit_arg != count_unit_arg_h)
655 count_unit_buf[1] = count_unit_abbrevs[select_conf.count_unit_arg];
656 else
657 count_unit_buf[0] = '\0';
658 if (select_conf.size_unit_arg != size_unit_arg_h)
659 size_unit_buf[1] = size_unit_abbrevs[select_conf.size_unit_arg];
660 else
661 size_unit_buf[0] = '\0';
662
663 ret = open_dir_table(0);
664 if (ret < 0)
665 goto out;
666 check_signals();
667 ret = read_uid_file(admissible_uids);
668 if (ret < 0)
669 goto out;
670 check_signals();
671 ret = print_statistics();
672 out:
673 close_all_tables();
674 if (output_file != stdout)
675 fclose(output_file);
676 return ret;
677 }
678
679 int com_select(void)
680 {
681 int ret;
682 struct uid_range *admissible_uids = NULL;
683
684 if (conf.select_options_given) {
685 struct select_cmdline_parser_params params = {
686 .override = 1,
687 .initialize = 1,
688 .check_required = 1,
689 .check_ambiguity = 1,
690 .print_errors = 1
691 };
692
693 if (select_cmdline_parser_string_ext(conf.select_options_arg,
694 &select_conf, "select", &params))
695 return -E_SYNTAX;
696 ret = parse_uid_arg(select_conf.uid_arg, &admissible_uids);
697 if (ret < 0)
698 return ret;
699 }
700 return run_select_query(admissible_uids);
701 }