PostgreSQL Source Code: src/backend/utils/adt/genfile.c Source File

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genfile.c
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1/*-------------------------------------------------------------------------
2 *
3 * genfile.c
4 * Functions for direct access to files
5 *
6 *
7 * Copyright (c) 2004-2025, PostgreSQL Global Development Group
8 *
9 * Author: Andreas Pflug <pgadmin@pse-consulting.de>
10 *
11 * IDENTIFICATION
12 * src/backend/utils/adt/genfile.c
13 *
14 *-------------------------------------------------------------------------
15 */
16#include "postgres.h"
17
18#include <sys/file.h>
19#include <sys/stat.h>
20#include <unistd.h>
21#include <dirent.h>
22
23#include "access/htup_details.h"
24#include "access/xlog_internal.h"
25#include "catalog/pg_authid.h"
26#include "catalog/pg_tablespace_d.h"
27#include "catalog/pg_type.h"
28#include "funcapi.h"
29#include "mb/pg_wchar.h"
30#include "miscadmin.h"
31#include "postmaster/syslogger.h"
32#include "replication/slot.h"
33#include "storage/fd.h"
34#include "utils/acl.h"
35#include "utils/builtins.h"
36#include "utils/memutils.h"
37#include "utils/syscache.h"
38#include "utils/timestamp.h"
39
40
41/*
42 * Convert a "text" filename argument to C string, and check it's allowable.
43 *
44 * Filename may be absolute or relative to the DataDir, but we only allow
45 * absolute paths that match DataDir or Log_directory.
46 *
47 * This does a privilege check against the 'pg_read_server_files' role, so
48 * this function is really only appropriate for callers who are only checking
49 * 'read' access. Do not use this function if you are looking for a check
50 * for 'write' or 'program' access without updating it to access the type
51 * of check as an argument and checking the appropriate role membership.
52 */
53static char *
54 convert_and_check_filename(text *arg)
55{
56 char *filename;
57
58 filename = text_to_cstring(arg);
59 canonicalize_path(filename); /* filename can change length here */
60
61 /*
62 * Roles with privileges of the 'pg_read_server_files' role are allowed to
63 * access any files on the server as the PG user, so no need to do any
64 * further checks here.
65 */
66 if (has_privs_of_role(GetUserId(), ROLE_PG_READ_SERVER_FILES))
67 return filename;
68
69 /*
70 * User isn't a member of the pg_read_server_files role, so check if it's
71 * allowable
72 */
73 if (is_absolute_path(filename))
74 {
75 /*
76 * Allow absolute paths if within DataDir or Log_directory, even
77 * though Log_directory might be outside DataDir.
78 */
79 if (!path_is_prefix_of_path(DataDir, filename) &&
80 (!is_absolute_path(Log_directory) ||
81 !path_is_prefix_of_path(Log_directory, filename)))
82 ereport(ERROR,
83 (errcode(ERRCODE_INSUFFICIENT_PRIVILEGE),
84 errmsg("absolute path not allowed")));
85 }
86 else if (!path_is_relative_and_below_cwd(filename))
87 ereport(ERROR,
88 (errcode(ERRCODE_INSUFFICIENT_PRIVILEGE),
89 errmsg("path must be in or below the data directory")));
90
91 return filename;
92}
93
94
95/*
96 * Read a section of a file, returning it as bytea
97 *
98 * Caller is responsible for all permissions checking.
99 *
100 * We read the whole of the file when bytes_to_read is negative.
101 */
102static bytea *
103 read_binary_file(const char *filename, int64 seek_offset, int64 bytes_to_read,
104 bool missing_ok)
105{
106 bytea *buf;
107 size_t nbytes = 0;
108 FILE *file;
109
110 /* clamp request size to what we can actually deliver */
111 if (bytes_to_read > (int64) (MaxAllocSize - VARHDRSZ))
112 ereport(ERROR,
113 (errcode(ERRCODE_INVALID_PARAMETER_VALUE),
114 errmsg("requested length too large")));
115
116 if ((file = AllocateFile(filename, PG_BINARY_R)) == NULL)
117 {
118 if (missing_ok && errno == ENOENT)
119 return NULL;
120 else
121 ereport(ERROR,
122 (errcode_for_file_access(),
123 errmsg("could not open file \"%s\" for reading: %m",
124 filename)));
125 }
126
127 if (fseeko(file, (off_t) seek_offset,
128 (seek_offset >= 0) ? SEEK_SET : SEEK_END) != 0)
129 ereport(ERROR,
130 (errcode_for_file_access(),
131 errmsg("could not seek in file \"%s\": %m", filename)));
132
133 if (bytes_to_read >= 0)
134 {
135 /* If passed explicit read size just do it */
136 buf = (bytea *) palloc((Size) bytes_to_read + VARHDRSZ);
137
138 nbytes = fread(VARDATA(buf), 1, (size_t) bytes_to_read, file);
139 }
140 else
141 {
142 /* Negative read size, read rest of file */
143 StringInfoData sbuf;
144
145 initStringInfo(&sbuf);
146 /* Leave room in the buffer for the varlena length word */
147 sbuf.len += VARHDRSZ;
148 Assert(sbuf.len < sbuf.maxlen);
149
150 while (!(feof(file) || ferror(file)))
151 {
152 size_t rbytes;
153
154 /* Minimum amount to read at a time */
155#define MIN_READ_SIZE 4096
156
157 /*
158 * If not at end of file, and sbuf.len is equal to MaxAllocSize -
159 * 1, then either the file is too large, or there is nothing left
160 * to read. Attempt to read one more byte to see if the end of
161 * file has been reached. If not, the file is too large; we'd
162 * rather give the error message for that ourselves.
163 */
164 if (sbuf.len == MaxAllocSize - 1)
165 {
166 char rbuf[1];
167
168 if (fread(rbuf, 1, 1, file) != 0 || !feof(file))
169 ereport(ERROR,
170 (errcode(ERRCODE_PROGRAM_LIMIT_EXCEEDED),
171 errmsg("file length too large")));
172 else
173 break;
174 }
175
176 /* OK, ensure that we can read at least MIN_READ_SIZE */
177 enlargeStringInfo(&sbuf, MIN_READ_SIZE);
178
179 /*
180 * stringinfo.c likes to allocate in powers of 2, so it's likely
181 * that much more space is available than we asked for. Use all
182 * of it, rather than making more fread calls than necessary.
183 */
184 rbytes = fread(sbuf.data + sbuf.len, 1,
185 (size_t) (sbuf.maxlen - sbuf.len - 1), file);
186 sbuf.len += rbytes;
187 nbytes += rbytes;
188 }
189
190 /* Now we can commandeer the stringinfo's buffer as the result */
191 buf = (bytea *) sbuf.data;
192 }
193
194 if (ferror(file))
195 ereport(ERROR,
196 (errcode_for_file_access(),
197 errmsg("could not read file \"%s\": %m", filename)));
198
199 SET_VARSIZE(buf, nbytes + VARHDRSZ);
200
201 FreeFile(file);
202
203 return buf;
204}
205
206/*
207 * Similar to read_binary_file, but we verify that the contents are valid
208 * in the database encoding.
209 */
210static text *
211 read_text_file(const char *filename, int64 seek_offset, int64 bytes_to_read,
212 bool missing_ok)
213{
214 bytea *buf;
215
216 buf = read_binary_file(filename, seek_offset, bytes_to_read, missing_ok);
217
218 if (buf != NULL)
219 {
220 /* Make sure the input is valid */
221 pg_verifymbstr(VARDATA(buf), VARSIZE(buf) - VARHDRSZ, false);
222
223 /* OK, we can cast it to text safely */
224 return (text *) buf;
225 }
226 else
227 return NULL;
228}
229
230/*
231 * Read a section of a file, returning it as text
232 *
233 * No superuser check done here- instead privileges are handled by the
234 * GRANT system.
235 *
236 * If read_to_eof is true, bytes_to_read must be -1, otherwise negative values
237 * are not allowed for bytes_to_read.
238 */
239static text *
240 pg_read_file_common(text *filename_t, int64 seek_offset, int64 bytes_to_read,
241 bool read_to_eof, bool missing_ok)
242{
243 if (read_to_eof)
244 Assert(bytes_to_read == -1);
245 else if (bytes_to_read < 0)
246 ereport(ERROR,
247 (errcode(ERRCODE_INVALID_PARAMETER_VALUE),
248 errmsg("requested length cannot be negative")));
249
250 return read_text_file(convert_and_check_filename(filename_t),
251 seek_offset, bytes_to_read, missing_ok);
252}
253
254/*
255 * Read a section of a file, returning it as bytea
256 *
257 * Parameters are interpreted the same as pg_read_file_common().
258 */
259static bytea *
260 pg_read_binary_file_common(text *filename_t,
261 int64 seek_offset, int64 bytes_to_read,
262 bool read_to_eof, bool missing_ok)
263{
264 if (read_to_eof)
265 Assert(bytes_to_read == -1);
266 else if (bytes_to_read < 0)
267 ereport(ERROR,
268 (errcode(ERRCODE_INVALID_PARAMETER_VALUE),
269 errmsg("requested length cannot be negative")));
270
271 return read_binary_file(convert_and_check_filename(filename_t),
272 seek_offset, bytes_to_read, missing_ok);
273}
274
275
276/*
277 * Wrapper functions for the variants of SQL functions pg_read_file() and
278 * pg_read_binary_file().
279 *
280 * These are necessary to pass the sanity check in opr_sanity, which checks
281 * that all built-in functions that share the implementing C function take
282 * the same number of arguments.
283 */
284Datum
285 pg_read_file_off_len(PG_FUNCTION_ARGS)
286{
287 text *filename_t = PG_GETARG_TEXT_PP(0);
288 int64 seek_offset = PG_GETARG_INT64(1);
289 int64 bytes_to_read = PG_GETARG_INT64(2);
290 text *ret;
291
292 ret = pg_read_file_common(filename_t, seek_offset, bytes_to_read,
293 false, false);
294 if (!ret)
295 PG_RETURN_NULL();
296
297 PG_RETURN_TEXT_P(ret);
298}
299
300Datum
301 pg_read_file_off_len_missing(PG_FUNCTION_ARGS)
302{
303 text *filename_t = PG_GETARG_TEXT_PP(0);
304 int64 seek_offset = PG_GETARG_INT64(1);
305 int64 bytes_to_read = PG_GETARG_INT64(2);
306 bool missing_ok = PG_GETARG_BOOL(3);
307 text *ret;
308
309 ret = pg_read_file_common(filename_t, seek_offset, bytes_to_read,
310 false, missing_ok);
311
312 if (!ret)
313 PG_RETURN_NULL();
314
315 PG_RETURN_TEXT_P(ret);
316}
317
318Datum
319 pg_read_file_all(PG_FUNCTION_ARGS)
320{
321 text *filename_t = PG_GETARG_TEXT_PP(0);
322 text *ret;
323
324 ret = pg_read_file_common(filename_t, 0, -1, true, false);
325
326 if (!ret)
327 PG_RETURN_NULL();
328
329 PG_RETURN_TEXT_P(ret);
330}
331
332Datum
333 pg_read_file_all_missing(PG_FUNCTION_ARGS)
334{
335 text *filename_t = PG_GETARG_TEXT_PP(0);
336 bool missing_ok = PG_GETARG_BOOL(1);
337 text *ret;
338
339 ret = pg_read_file_common(filename_t, 0, -1, true, missing_ok);
340
341 if (!ret)
342 PG_RETURN_NULL();
343
344 PG_RETURN_TEXT_P(ret);
345}
346
347Datum
348 pg_read_binary_file_off_len(PG_FUNCTION_ARGS)
349{
350 text *filename_t = PG_GETARG_TEXT_PP(0);
351 int64 seek_offset = PG_GETARG_INT64(1);
352 int64 bytes_to_read = PG_GETARG_INT64(2);
353 text *ret;
354
355 ret = pg_read_binary_file_common(filename_t, seek_offset, bytes_to_read,
356 false, false);
357 if (!ret)
358 PG_RETURN_NULL();
359
360 PG_RETURN_BYTEA_P(ret);
361}
362
363Datum
364 pg_read_binary_file_off_len_missing(PG_FUNCTION_ARGS)
365{
366 text *filename_t = PG_GETARG_TEXT_PP(0);
367 int64 seek_offset = PG_GETARG_INT64(1);
368 int64 bytes_to_read = PG_GETARG_INT64(2);
369 bool missing_ok = PG_GETARG_BOOL(3);
370 text *ret;
371
372 ret = pg_read_binary_file_common(filename_t, seek_offset, bytes_to_read,
373 false, missing_ok);
374 if (!ret)
375 PG_RETURN_NULL();
376
377 PG_RETURN_BYTEA_P(ret);
378}
379
380Datum
381 pg_read_binary_file_all(PG_FUNCTION_ARGS)
382{
383 text *filename_t = PG_GETARG_TEXT_PP(0);
384 text *ret;
385
386 ret = pg_read_binary_file_common(filename_t, 0, -1, true, false);
387
388 if (!ret)
389 PG_RETURN_NULL();
390
391 PG_RETURN_BYTEA_P(ret);
392}
393
394Datum
395 pg_read_binary_file_all_missing(PG_FUNCTION_ARGS)
396{
397 text *filename_t = PG_GETARG_TEXT_PP(0);
398 bool missing_ok = PG_GETARG_BOOL(1);
399 text *ret;
400
401 ret = pg_read_binary_file_common(filename_t, 0, -1, true, missing_ok);
402
403 if (!ret)
404 PG_RETURN_NULL();
405
406 PG_RETURN_BYTEA_P(ret);
407}
408
409/*
410 * stat a file
411 */
412Datum
413 pg_stat_file(PG_FUNCTION_ARGS)
414{
415 text *filename_t = PG_GETARG_TEXT_PP(0);
416 char *filename;
417 struct stat fst;
418 Datum values[6];
419 bool isnull[6];
420 HeapTuple tuple;
421 TupleDesc tupdesc;
422 bool missing_ok = false;
423
424 /* check the optional argument */
425 if (PG_NARGS() == 2)
426 missing_ok = PG_GETARG_BOOL(1);
427
428 filename = convert_and_check_filename(filename_t);
429
430 if (stat(filename, &fst) < 0)
431 {
432 if (missing_ok && errno == ENOENT)
433 PG_RETURN_NULL();
434 else
435 ereport(ERROR,
436 (errcode_for_file_access(),
437 errmsg("could not stat file \"%s\": %m", filename)));
438 }
439
440 /*
441 * This record type had better match the output parameters declared for me
442 * in pg_proc.h.
443 */
444 tupdesc = CreateTemplateTupleDesc(6);
445 TupleDescInitEntry(tupdesc, (AttrNumber) 1,
446 "size", INT8OID, -1, 0);
447 TupleDescInitEntry(tupdesc, (AttrNumber) 2,
448 "access", TIMESTAMPTZOID, -1, 0);
449 TupleDescInitEntry(tupdesc, (AttrNumber) 3,
450 "modification", TIMESTAMPTZOID, -1, 0);
451 TupleDescInitEntry(tupdesc, (AttrNumber) 4,
452 "change", TIMESTAMPTZOID, -1, 0);
453 TupleDescInitEntry(tupdesc, (AttrNumber) 5,
454 "creation", TIMESTAMPTZOID, -1, 0);
455 TupleDescInitEntry(tupdesc, (AttrNumber) 6,
456 "isdir", BOOLOID, -1, 0);
457 BlessTupleDesc(tupdesc);
458
459 memset(isnull, false, sizeof(isnull));
460
461 values[0] = Int64GetDatum((int64) fst.st_size);
462 values[1] = TimestampTzGetDatum(time_t_to_timestamptz(fst.st_atime));
463 values[2] = TimestampTzGetDatum(time_t_to_timestamptz(fst.st_mtime));
464 /* Unix has file status change time, while Win32 has creation time */
465#if !defined(WIN32) && !defined(__CYGWIN__)
466 values[3] = TimestampTzGetDatum(time_t_to_timestamptz(fst.st_ctime));
467 isnull[4] = true;
468#else
469 isnull[3] = true;
470 values[4] = TimestampTzGetDatum(time_t_to_timestamptz(fst.st_ctime));
471#endif
472 values[5] = BoolGetDatum(S_ISDIR(fst.st_mode));
473
474 tuple = heap_form_tuple(tupdesc, values, isnull);
475
476 pfree(filename);
477
478 PG_RETURN_DATUM(HeapTupleGetDatum(tuple));
479}
480
481/*
482 * stat a file (1 argument version)
483 *
484 * note: this wrapper is necessary to pass the sanity check in opr_sanity,
485 * which checks that all built-in functions that share the implementing C
486 * function take the same number of arguments
487 */
488Datum
489 pg_stat_file_1arg(PG_FUNCTION_ARGS)
490{
491 return pg_stat_file(fcinfo);
492}
493
494/*
495 * List a directory (returns the filenames only)
496 */
497Datum
498 pg_ls_dir(PG_FUNCTION_ARGS)
499{
500 ReturnSetInfo *rsinfo = (ReturnSetInfo *) fcinfo->resultinfo;
501 char *location;
502 bool missing_ok = false;
503 bool include_dot_dirs = false;
504 DIR *dirdesc;
505 struct dirent *de;
506
507 location = convert_and_check_filename(PG_GETARG_TEXT_PP(0));
508
509 /* check the optional arguments */
510 if (PG_NARGS() == 3)
511 {
512 if (!PG_ARGISNULL(1))
513 missing_ok = PG_GETARG_BOOL(1);
514 if (!PG_ARGISNULL(2))
515 include_dot_dirs = PG_GETARG_BOOL(2);
516 }
517
518 InitMaterializedSRF(fcinfo, MAT_SRF_USE_EXPECTED_DESC);
519
520 dirdesc = AllocateDir(location);
521 if (!dirdesc)
522 {
523 /* Return empty tuplestore if appropriate */
524 if (missing_ok && errno == ENOENT)
525 return (Datum) 0;
526 /* Otherwise, we can let ReadDir() throw the error */
527 }
528
529 while ((de = ReadDir(dirdesc, location)) != NULL)
530 {
531 Datum values[1];
532 bool nulls[1];
533
534 if (!include_dot_dirs &&
535 (strcmp(de->d_name, ".") == 0 ||
536 strcmp(de->d_name, "..") == 0))
537 continue;
538
539 values[0] = CStringGetTextDatum(de->d_name);
540 nulls[0] = false;
541
542 tuplestore_putvalues(rsinfo->setResult, rsinfo->setDesc,
543 values, nulls);
544 }
545
546 FreeDir(dirdesc);
547 return (Datum) 0;
548}
549
550/*
551 * List a directory (1 argument version)
552 *
553 * note: this wrapper is necessary to pass the sanity check in opr_sanity,
554 * which checks that all built-in functions that share the implementing C
555 * function take the same number of arguments.
556 */
557Datum
558 pg_ls_dir_1arg(PG_FUNCTION_ARGS)
559{
560 return pg_ls_dir(fcinfo);
561}
562
563/*
564 * Generic function to return a directory listing of files.
565 *
566 * If the directory isn't there, silently return an empty set if missing_ok.
567 * Other unreadable-directory cases throw an error.
568 */
569static Datum
570 pg_ls_dir_files(FunctionCallInfo fcinfo, const char *dir, bool missing_ok)
571{
572 ReturnSetInfo *rsinfo = (ReturnSetInfo *) fcinfo->resultinfo;
573 DIR *dirdesc;
574 struct dirent *de;
575
576 InitMaterializedSRF(fcinfo, 0);
577
578 /*
579 * Now walk the directory. Note that we must do this within a single SRF
580 * call, not leave the directory open across multiple calls, since we
581 * can't count on the SRF being run to completion.
582 */
583 dirdesc = AllocateDir(dir);
584 if (!dirdesc)
585 {
586 /* Return empty tuplestore if appropriate */
587 if (missing_ok && errno == ENOENT)
588 return (Datum) 0;
589 /* Otherwise, we can let ReadDir() throw the error */
590 }
591
592 while ((de = ReadDir(dirdesc, dir)) != NULL)
593 {
594 Datum values[3];
595 bool nulls[3];
596 char path[MAXPGPATH * 2];
597 struct stat attrib;
598
599 /* Skip hidden files */
600 if (de->d_name[0] == '.')
601 continue;
602
603 /* Get the file info */
604 snprintf(path, sizeof(path), "%s/%s", dir, de->d_name);
605 if (stat(path, &attrib) < 0)
606 {
607 /* Ignore concurrently-deleted files, else complain */
608 if (errno == ENOENT)
609 continue;
610 ereport(ERROR,
611 (errcode_for_file_access(),
612 errmsg("could not stat file \"%s\": %m", path)));
613 }
614
615 /* Ignore anything but regular files */
616 if (!S_ISREG(attrib.st_mode))
617 continue;
618
619 values[0] = CStringGetTextDatum(de->d_name);
620 values[1] = Int64GetDatum((int64) attrib.st_size);
621 values[2] = TimestampTzGetDatum(time_t_to_timestamptz(attrib.st_mtime));
622 memset(nulls, 0, sizeof(nulls));
623
624 tuplestore_putvalues(rsinfo->setResult, rsinfo->setDesc, values, nulls);
625 }
626
627 FreeDir(dirdesc);
628 return (Datum) 0;
629}
630
631/* Function to return the list of files in the log directory */
632Datum
633 pg_ls_logdir(PG_FUNCTION_ARGS)
634{
635 return pg_ls_dir_files(fcinfo, Log_directory, false);
636}
637
638/* Function to return the list of files in the WAL directory */
639Datum
640 pg_ls_waldir(PG_FUNCTION_ARGS)
641{
642 return pg_ls_dir_files(fcinfo, XLOGDIR, false);
643}
644
645/*
646 * Generic function to return the list of files in pgsql_tmp
647 */
648static Datum
649 pg_ls_tmpdir(FunctionCallInfo fcinfo, Oid tblspc)
650{
651 char path[MAXPGPATH];
652
653 if (!SearchSysCacheExists1(TABLESPACEOID, ObjectIdGetDatum(tblspc)))
654 ereport(ERROR,
655 (errcode(ERRCODE_UNDEFINED_OBJECT),
656 errmsg("tablespace with OID %u does not exist",
657 tblspc)));
658
659 TempTablespacePath(path, tblspc);
660 return pg_ls_dir_files(fcinfo, path, true);
661}
662
663/*
664 * Function to return the list of temporary files in the pg_default tablespace's
665 * pgsql_tmp directory
666 */
667Datum
668 pg_ls_tmpdir_noargs(PG_FUNCTION_ARGS)
669{
670 return pg_ls_tmpdir(fcinfo, DEFAULTTABLESPACE_OID);
671}
672
673/*
674 * Function to return the list of temporary files in the specified tablespace's
675 * pgsql_tmp directory
676 */
677Datum
678 pg_ls_tmpdir_1arg(PG_FUNCTION_ARGS)
679{
680 return pg_ls_tmpdir(fcinfo, PG_GETARG_OID(0));
681}
682
683/*
684 * Function to return the list of files in the WAL archive status directory.
685 */
686Datum
687 pg_ls_archive_statusdir(PG_FUNCTION_ARGS)
688{
689 return pg_ls_dir_files(fcinfo, XLOGDIR "/archive_status", true);
690}
691
692/*
693 * Function to return the list of files in the WAL summaries directory.
694 */
695Datum
696 pg_ls_summariesdir(PG_FUNCTION_ARGS)
697{
698 return pg_ls_dir_files(fcinfo, XLOGDIR "/summaries", true);
699}
700
701/*
702 * Function to return the list of files in the PG_LOGICAL_SNAPSHOTS_DIR
703 * directory.
704 */
705Datum
706 pg_ls_logicalsnapdir(PG_FUNCTION_ARGS)
707{
708 return pg_ls_dir_files(fcinfo, PG_LOGICAL_SNAPSHOTS_DIR, false);
709}
710
711/*
712 * Function to return the list of files in the PG_LOGICAL_MAPPINGS_DIR
713 * directory.
714 */
715Datum
716 pg_ls_logicalmapdir(PG_FUNCTION_ARGS)
717{
718 return pg_ls_dir_files(fcinfo, PG_LOGICAL_MAPPINGS_DIR, false);
719}
720
721/*
722 * Function to return the list of files in the PG_REPLSLOT_DIR/<slot_name>
723 * directory.
724 */
725Datum
726 pg_ls_replslotdir(PG_FUNCTION_ARGS)
727{
728 text *slotname_t;
729 char path[MAXPGPATH];
730 char *slotname;
731
732 slotname_t = PG_GETARG_TEXT_PP(0);
733
734 slotname = text_to_cstring(slotname_t);
735
736 if (!SearchNamedReplicationSlot(slotname, true))
737 ereport(ERROR,
738 (errcode(ERRCODE_UNDEFINED_OBJECT),
739 errmsg("replication slot \"%s\" does not exist",
740 slotname)));
741
742 snprintf(path, sizeof(path), "%s/%s", PG_REPLSLOT_DIR, slotname);
743
744 return pg_ls_dir_files(fcinfo, path, false);
745}
bool has_privs_of_role(Oid member, Oid role)
Definition: acl.c:5284
int16 AttrNumber
Definition: attnum.h:21
TimestampTz time_t_to_timestamptz(pg_time_t tm)
Definition: timestamp.c:1820
static Datum values[MAXATTR]
Definition: bootstrap.c:153
#define CStringGetTextDatum(s)
Definition: builtins.h:97
#define PG_BINARY_R
Definition: c.h:1274
#define VARHDRSZ
Definition: c.h:697
int64_t int64
Definition: c.h:535
size_t Size
Definition: c.h:610
int errcode_for_file_access(void)
Definition: elog.c:877
int errcode(int sqlerrcode)
Definition: elog.c:854
int errmsg(const char *fmt,...)
Definition: elog.c:1071
#define ERROR
Definition: elog.h:39
#define ereport(elevel,...)
Definition: elog.h:150
TupleDesc BlessTupleDesc(TupleDesc tupdesc)
Definition: execTuples.c:2260
int FreeDir(DIR *dir)
Definition: fd.c:3022
int FreeFile(FILE *file)
Definition: fd.c:2840
DIR * AllocateDir(const char *dirname)
Definition: fd.c:2904
struct dirent * ReadDir(DIR *dir, const char *dirname)
Definition: fd.c:2970
FILE * AllocateFile(const char *name, const char *mode)
Definition: fd.c:2641
void TempTablespacePath(char *path, Oid tablespace)
Definition: fd.c:1780
#define MaxAllocSize
Definition: fe_memutils.h:22
#define PG_GETARG_OID(n)
Definition: fmgr.h:275
#define PG_GETARG_TEXT_PP(n)
Definition: fmgr.h:309
#define PG_RETURN_BYTEA_P(x)
Definition: fmgr.h:371
#define PG_ARGISNULL(n)
Definition: fmgr.h:209
#define PG_NARGS()
Definition: fmgr.h:203
#define PG_RETURN_NULL()
Definition: fmgr.h:345
#define PG_GETARG_INT64(n)
Definition: fmgr.h:283
#define PG_RETURN_TEXT_P(x)
Definition: fmgr.h:372
#define PG_GETARG_BOOL(n)
Definition: fmgr.h:274
#define PG_RETURN_DATUM(x)
Definition: fmgr.h:353
#define PG_FUNCTION_ARGS
Definition: fmgr.h:193
void InitMaterializedSRF(FunctionCallInfo fcinfo, bits32 flags)
Definition: funcapi.c:76
static Datum HeapTupleGetDatum(const HeapTupleData *tuple)
Definition: funcapi.h:230
#define MAT_SRF_USE_EXPECTED_DESC
Definition: funcapi.h:296
Datum pg_read_file_off_len_missing(PG_FUNCTION_ARGS)
Definition: genfile.c:301
Datum pg_ls_summariesdir(PG_FUNCTION_ARGS)
Definition: genfile.c:696
Datum pg_read_file_off_len(PG_FUNCTION_ARGS)
Definition: genfile.c:285
Datum pg_read_binary_file_all_missing(PG_FUNCTION_ARGS)
Definition: genfile.c:395
Datum pg_read_binary_file_all(PG_FUNCTION_ARGS)
Definition: genfile.c:381
Datum pg_ls_logicalsnapdir(PG_FUNCTION_ARGS)
Definition: genfile.c:706
Datum pg_ls_waldir(PG_FUNCTION_ARGS)
Definition: genfile.c:640
Datum pg_ls_replslotdir(PG_FUNCTION_ARGS)
Definition: genfile.c:726
Datum pg_ls_dir(PG_FUNCTION_ARGS)
Definition: genfile.c:498
static bytea * pg_read_binary_file_common(text *filename_t, int64 seek_offset, int64 bytes_to_read, bool read_to_eof, bool missing_ok)
Definition: genfile.c:260
Datum pg_ls_archive_statusdir(PG_FUNCTION_ARGS)
Definition: genfile.c:687
Datum pg_stat_file(PG_FUNCTION_ARGS)
Definition: genfile.c:413
static text * read_text_file(const char *filename, int64 seek_offset, int64 bytes_to_read, bool missing_ok)
Definition: genfile.c:211
static Datum pg_ls_tmpdir(FunctionCallInfo fcinfo, Oid tblspc)
Definition: genfile.c:649
static text * pg_read_file_common(text *filename_t, int64 seek_offset, int64 bytes_to_read, bool read_to_eof, bool missing_ok)
Definition: genfile.c:240
static bytea * read_binary_file(const char *filename, int64 seek_offset, int64 bytes_to_read, bool missing_ok)
Definition: genfile.c:103
#define MIN_READ_SIZE
Datum pg_read_binary_file_off_len(PG_FUNCTION_ARGS)
Definition: genfile.c:348
Datum pg_ls_dir_1arg(PG_FUNCTION_ARGS)
Definition: genfile.c:558
Datum pg_read_binary_file_off_len_missing(PG_FUNCTION_ARGS)
Definition: genfile.c:364
Datum pg_read_file_all(PG_FUNCTION_ARGS)
Definition: genfile.c:319
Datum pg_ls_tmpdir_noargs(PG_FUNCTION_ARGS)
Definition: genfile.c:668
Datum pg_ls_logdir(PG_FUNCTION_ARGS)
Definition: genfile.c:633
Datum pg_ls_logicalmapdir(PG_FUNCTION_ARGS)
Definition: genfile.c:716
Datum pg_stat_file_1arg(PG_FUNCTION_ARGS)
Definition: genfile.c:489
Datum pg_read_file_all_missing(PG_FUNCTION_ARGS)
Definition: genfile.c:333
Datum pg_ls_tmpdir_1arg(PG_FUNCTION_ARGS)
Definition: genfile.c:678
static Datum pg_ls_dir_files(FunctionCallInfo fcinfo, const char *dir, bool missing_ok)
Definition: genfile.c:570
static char * convert_and_check_filename(text *arg)
Definition: genfile.c:54
char * DataDir
Definition: globals.c:71
Assert(PointerIsAligned(start, uint64))
HeapTuple heap_form_tuple(TupleDesc tupleDescriptor, const Datum *values, const bool *isnull)
Definition: heaptuple.c:1117
bool pg_verifymbstr(const char *mbstr, int len, bool noError)
Definition: mbutils.c:1557
void pfree(void *pointer)
Definition: mcxt.c:1594
void * palloc(Size size)
Definition: mcxt.c:1365
Oid GetUserId(void)
Definition: miscinit.c:469
void * arg
#define MAXPGPATH
static char * filename
Definition: pg_dumpall.c:120
static char * buf
Definition: pg_test_fsync.c:72
#define is_absolute_path(filename)
Definition: port.h:104
bool path_is_prefix_of_path(const char *path1, const char *path2)
Definition: path.c:637
bool path_is_relative_and_below_cwd(const char *path)
Definition: path.c:604
void canonicalize_path(char *path)
Definition: path.c:337
#define snprintf
Definition: port.h:239
static Datum Int64GetDatum(int64 X)
Definition: postgres.h:403
static Datum BoolGetDatum(bool X)
Definition: postgres.h:112
static Datum ObjectIdGetDatum(Oid X)
Definition: postgres.h:262
uint64_t Datum
Definition: postgres.h:70
unsigned int Oid
Definition: postgres_ext.h:32
#define PG_LOGICAL_SNAPSHOTS_DIR
Definition: reorderbuffer.h:24
#define PG_LOGICAL_MAPPINGS_DIR
Definition: reorderbuffer.h:23
ReplicationSlot * SearchNamedReplicationSlot(const char *name, bool need_lock)
Definition: slot.c:513
#define PG_REPLSLOT_DIR
Definition: slot.h:21
void enlargeStringInfo(StringInfo str, int needed)
Definition: stringinfo.c:337
void initStringInfo(StringInfo str)
Definition: stringinfo.c:97
Definition: dirent.c:26
Node * resultinfo
Definition: fmgr.h:89
TupleDesc setDesc
Definition: execnodes.h:364
Tuplestorestate * setResult
Definition: execnodes.h:363
char * data
Definition: stringinfo.h:48
Definition: dirent.h:10
Definition: win32_port.h:255
__time64_t st_mtime
Definition: win32_port.h:265
__int64 st_size
Definition: win32_port.h:263
unsigned short st_mode
Definition: win32_port.h:258
__time64_t st_atime
Definition: win32_port.h:264
__time64_t st_ctime
Definition: win32_port.h:266
Definition: c.h:692
#define SearchSysCacheExists1(cacheId, key1)
Definition: syscache.h:100
char * Log_directory
Definition: syslogger.c:73
TupleDesc CreateTemplateTupleDesc(int natts)
Definition: tupdesc.c:182
void TupleDescInitEntry(TupleDesc desc, AttrNumber attributeNumber, const char *attributeName, Oid oidtypeid, int32 typmod, int attdim)
Definition: tupdesc.c:842
void tuplestore_putvalues(Tuplestorestate *state, TupleDesc tdesc, const Datum *values, const bool *isnull)
Definition: tuplestore.c:784
static Datum TimestampTzGetDatum(TimestampTz X)
Definition: timestamp.h:52
static Size VARSIZE(const void *PTR)
Definition: varatt.h:298
static char * VARDATA(const void *PTR)
Definition: varatt.h:305
static void SET_VARSIZE(void *PTR, Size len)
Definition: varatt.h:432
char * text_to_cstring(const text *t)
Definition: varlena.c:214
#define stat
Definition: win32_port.h:274
#define S_ISDIR(m)
Definition: win32_port.h:315
#define S_ISREG(m)
Definition: win32_port.h:318
#define fseeko(stream, offset, origin)
Definition: win32_port.h:206
#define XLOGDIR
Definition: xlog_internal.h:149

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