PostgreSQL Source Code  git master
pg_checksums.c
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1 /*-------------------------------------------------------------------------
2  *
3  * pg_checksums.c
4  * Checks, enables or disables page level checksums for an offline
5  * cluster
6  *
7  * Copyright (c) 2010-2023, PostgreSQL Global Development Group
8  *
9  * IDENTIFICATION
10  * src/bin/pg_checksums/pg_checksums.c
11  *
12  *-------------------------------------------------------------------------
13  */
14 
15 #include "postgres_fe.h"
16 
17 #include <dirent.h>
18 #include <limits.h>
19 #include <time.h>
20 #include <sys/stat.h>
21 #include <unistd.h>
22 
23 #include "access/xlog_internal.h"
25 #include "common/file_perm.h"
26 #include "common/file_utils.h"
27 #include "common/logging.h"
28 #include "fe_utils/option_utils.h"
29 #include "getopt_long.h"
30 #include "pg_getopt.h"
31 #include "storage/bufpage.h"
32 #include "storage/checksum.h"
33 #include "storage/checksum_impl.h"
34 
35 
36 static int64 files_scanned = 0;
37 static int64 files_written = 0;
38 static int64 blocks_scanned = 0;
39 static int64 blocks_written = 0;
40 static int64 badblocks = 0;
42 
43 static char *only_filenode = NULL;
44 static bool do_sync = true;
45 static bool verbose = false;
46 static bool showprogress = false;
47 
48 typedef enum
49 {
54 
55 /*
56  * Filename components.
57  *
58  * XXX: fd.h is not declared here as frontend side code is not able to
59  * interact with the backend-side definitions for the various fsync
60  * wrappers.
61  */
62 #define PG_TEMP_FILES_DIR "pgsql_tmp"
63 #define PG_TEMP_FILE_PREFIX "pgsql_tmp"
64 
66 
67 static const char *progname;
68 
69 /*
70  * Progress status information.
71  */
72 int64 total_size = 0;
73 int64 current_size = 0;
75 
76 static void
77 usage(void)
78 {
79  printf(_("%s enables, disables, or verifies data checksums in a PostgreSQL database cluster.\n\n"), progname);
80  printf(_("Usage:\n"));
81  printf(_(" %s [OPTION]... [DATADIR]\n"), progname);
82  printf(_("\nOptions:\n"));
83  printf(_(" [-D, --pgdata=]DATADIR data directory\n"));
84  printf(_(" -c, --check check data checksums (default)\n"));
85  printf(_(" -d, --disable disable data checksums\n"));
86  printf(_(" -e, --enable enable data checksums\n"));
87  printf(_(" -f, --filenode=FILENODE check only relation with specified filenode\n"));
88  printf(_(" -N, --no-sync do not wait for changes to be written safely to disk\n"));
89  printf(_(" -P, --progress show progress information\n"));
90  printf(_(" -v, --verbose output verbose messages\n"));
91  printf(_(" -V, --version output version information, then exit\n"));
92  printf(_(" -?, --help show this help, then exit\n"));
93  printf(_("\nIf no data directory (DATADIR) is specified, "
94  "the environment variable PGDATA\nis used.\n\n"));
95  printf(_("Report bugs to <%s>.\n"), PACKAGE_BUGREPORT);
96  printf(_("%s home page: <%s>\n"), PACKAGE_NAME, PACKAGE_URL);
97 }
98 
99 /*
100  * Definition of one element part of an exclusion list, used for files
101  * to exclude from checksum validation. "name" is the name of the file
102  * or path to check for exclusion. If "match_prefix" is true, any items
103  * matching the name as prefix are excluded.
104  */
105 struct exclude_list_item
106 {
107  const char *name;
108  bool match_prefix;
109 };
110 
111 /*
112  * List of files excluded from checksum validation.
113  *
114  * Note: this list should be kept in sync with what basebackup.c includes.
115  */
116 static const struct exclude_list_item skip[] = {
117  {"pg_control", false},
118  {"pg_filenode.map", false},
119  {"pg_internal.init", true},
120  {"PG_VERSION", false},
121 #ifdef EXEC_BACKEND
122  {"config_exec_params", true},
123 #endif
124  {NULL, false}
125 };
126 
127 /*
128  * Report current progress status. Parts borrowed from
129  * src/bin/pg_basebackup/pg_basebackup.c.
130  */
131 static void
132 progress_report(bool finished)
133 {
134  int percent;
135  pg_time_t now;
136 
138 
139  now = time(NULL);
140  if (now == last_progress_report && !finished)
141  return; /* Max once per second */
142 
143  /* Save current time */
145 
146  /* Adjust total size if current_size is larger */
147  if (current_size > total_size)
149 
150  /* Calculate current percentage of size done */
151  percent = total_size ? (int) ((current_size) * 100 / total_size) : 0;
152 
153  fprintf(stderr, _("%lld/%lld MB (%d%%) computed"),
154  (long long) (current_size / (1024 * 1024)),
155  (long long) (total_size / (1024 * 1024)),
156  percent);
157 
158  /*
159  * Stay on the same line if reporting to a terminal and we're not done
160  * yet.
161  */
162  fputc((!finished && isatty(fileno(stderr))) ? '\r' : '\n', stderr);
163 }
164 
165 static bool
166 skipfile(const char *fn)
167 {
168  int excludeIdx;
169 
170  for (excludeIdx = 0; skip[excludeIdx].name != NULL; excludeIdx++)
171  {
172  int cmplen = strlen(skip[excludeIdx].name);
173 
174  if (!skip[excludeIdx].match_prefix)
175  cmplen++;
176  if (strncmp(skip[excludeIdx].name, fn, cmplen) == 0)
177  return true;
178  }
179 
180  return false;
181 }
182 
183 static void
184 scan_file(const char *fn, int segmentno)
185 {
187  PageHeader header = (PageHeader) buf.data;
188  int f;
189  BlockNumber blockno;
190  int flags;
191  int64 blocks_written_in_file = 0;
192 
194  mode == PG_MODE_CHECK);
195 
196  flags = (mode == PG_MODE_ENABLE) ? O_RDWR : O_RDONLY;
197  f = open(fn, PG_BINARY | flags, 0);
198 
199  if (f < 0)
200  pg_fatal("could not open file \"%s\": %m", fn);
201 
202  files_scanned++;
203 
204  for (blockno = 0;; blockno++)
205  {
206  uint16 csum;
207  int r = read(f, buf.data, BLCKSZ);
208 
209  if (r == 0)
210  break;
211  if (r != BLCKSZ)
212  {
213  if (r < 0)
214  pg_fatal("could not read block %u in file \"%s\": %m",
215  blockno, fn);
216  else
217  pg_fatal("could not read block %u in file \"%s\": read %d of %d",
218  blockno, fn, r, BLCKSZ);
219  }
220  blocks_scanned++;
221 
222  /*
223  * Since the file size is counted as total_size for progress status
224  * information, the sizes of all pages including new ones in the file
225  * should be counted as current_size. Otherwise the progress reporting
226  * calculated using those counters may not reach 100%.
227  */
228  current_size += r;
229 
230  /* New pages have no checksum yet */
231  if (PageIsNew(buf.data))
232  continue;
233 
234  csum = pg_checksum_page(buf.data, blockno + segmentno * RELSEG_SIZE);
235  if (mode == PG_MODE_CHECK)
236  {
237  if (csum != header->pd_checksum)
238  {
240  pg_log_error("checksum verification failed in file \"%s\", block %u: calculated checksum %X but block contains %X",
241  fn, blockno, csum, header->pd_checksum);
242  badblocks++;
243  }
244  }
245  else if (mode == PG_MODE_ENABLE)
246  {
247  int w;
248 
249  /*
250  * Do not rewrite if the checksum is already set to the expected
251  * value.
252  */
253  if (header->pd_checksum == csum)
254  continue;
255 
256  blocks_written_in_file++;
257 
258  /* Set checksum in page header */
259  header->pd_checksum = csum;
260 
261  /* Seek back to beginning of block */
262  if (lseek(f, -BLCKSZ, SEEK_CUR) < 0)
263  pg_fatal("seek failed for block %u in file \"%s\": %m", blockno, fn);
264 
265  /* Write block with checksum */
266  w = write(f, buf.data, BLCKSZ);
267  if (w != BLCKSZ)
268  {
269  if (w < 0)
270  pg_fatal("could not write block %u in file \"%s\": %m",
271  blockno, fn);
272  else
273  pg_fatal("could not write block %u in file \"%s\": wrote %d of %d",
274  blockno, fn, w, BLCKSZ);
275  }
276  }
277 
278  if (showprogress)
279  progress_report(false);
280  }
281 
282  if (verbose)
283  {
284  if (mode == PG_MODE_CHECK)
285  pg_log_info("checksums verified in file \"%s\"", fn);
286  if (mode == PG_MODE_ENABLE)
287  pg_log_info("checksums enabled in file \"%s\"", fn);
288  }
289 
290  /* Update write counters if any write activity has happened */
291  if (blocks_written_in_file > 0)
292  {
293  files_written++;
294  blocks_written += blocks_written_in_file;
295  }
296 
297  close(f);
298 }
299 
300 /*
301  * Scan the given directory for items which can be checksummed and
302  * operate on each one of them. If "sizeonly" is true, the size of
303  * all the items which have checksums is computed and returned back
304  * to the caller without operating on the files. This is used to compile
305  * the total size of the data directory for progress reports.
306  */
307 static int64
308 scan_directory(const char *basedir, const char *subdir, bool sizeonly)
309 {
310  int64 dirsize = 0;
311  char path[MAXPGPATH];
312  DIR *dir;
313  struct dirent *de;
314 
315  snprintf(path, sizeof(path), "%s/%s", basedir, subdir);
316  dir = opendir(path);
317  if (!dir)
318  pg_fatal("could not open directory \"%s\": %m", path);
319  while ((de = readdir(dir)) != NULL)
320  {
321  char fn[MAXPGPATH];
322  struct stat st;
323 
324  if (strcmp(de->d_name, ".") == 0 ||
325  strcmp(de->d_name, "..") == 0)
326  continue;
327 
328  /* Skip temporary files */
329  if (strncmp(de->d_name,
331  strlen(PG_TEMP_FILE_PREFIX)) == 0)
332  continue;
333 
334  /* Skip temporary folders */
335  if (strncmp(de->d_name,
337  strlen(PG_TEMP_FILES_DIR)) == 0)
338  continue;
339 
340  snprintf(fn, sizeof(fn), "%s/%s", path, de->d_name);
341  if (lstat(fn, &st) < 0)
342  pg_fatal("could not stat file \"%s\": %m", fn);
343  if (S_ISREG(st.st_mode))
344  {
345  char fnonly[MAXPGPATH];
346  char *forkpath,
347  *segmentpath;
348  int segmentno = 0;
349 
350  if (skipfile(de->d_name))
351  continue;
352 
353  /*
354  * Cut off at the segment boundary (".") to get the segment number
355  * in order to mix it into the checksum. Then also cut off at the
356  * fork boundary, to get the filenode the file belongs to for
357  * filtering.
358  */
359  strlcpy(fnonly, de->d_name, sizeof(fnonly));
360  segmentpath = strchr(fnonly, '.');
361  if (segmentpath != NULL)
362  {
363  *segmentpath++ = '\0';
364  segmentno = atoi(segmentpath);
365  if (segmentno == 0)
366  pg_fatal("invalid segment number %d in file name \"%s\"",
367  segmentno, fn);
368  }
369 
370  forkpath = strchr(fnonly, '_');
371  if (forkpath != NULL)
372  *forkpath++ = '\0';
373 
374  if (only_filenode && strcmp(only_filenode, fnonly) != 0)
375  /* filenode not to be included */
376  continue;
377 
378  dirsize += st.st_size;
379 
380  /*
381  * No need to work on the file when calculating only the size of
382  * the items in the data folder.
383  */
384  if (!sizeonly)
385  scan_file(fn, segmentno);
386  }
387  else if (S_ISDIR(st.st_mode) || S_ISLNK(st.st_mode))
388  {
389  /*
390  * If going through the entries of pg_tblspc, we assume to operate
391  * on tablespace locations where only TABLESPACE_VERSION_DIRECTORY
392  * is valid, resolving the linked locations and dive into them
393  * directly.
394  */
395  if (strncmp("pg_tblspc", subdir, strlen("pg_tblspc")) == 0)
396  {
397  char tblspc_path[MAXPGPATH];
398  struct stat tblspc_st;
399 
400  /*
401  * Resolve tablespace location path and check whether
402  * TABLESPACE_VERSION_DIRECTORY exists. Not finding a valid
403  * location is unexpected, since there should be no orphaned
404  * links and no links pointing to something else than a
405  * directory.
406  */
407  snprintf(tblspc_path, sizeof(tblspc_path), "%s/%s/%s",
409 
410  if (lstat(tblspc_path, &tblspc_st) < 0)
411  pg_fatal("could not stat file \"%s\": %m",
412  tblspc_path);
413 
414  /*
415  * Move backwards once as the scan needs to happen for the
416  * contents of TABLESPACE_VERSION_DIRECTORY.
417  */
418  snprintf(tblspc_path, sizeof(tblspc_path), "%s/%s",
419  path, de->d_name);
420 
421  /* Looks like a valid tablespace location */
422  dirsize += scan_directory(tblspc_path,
424  sizeonly);
425  }
426  else
427  {
428  dirsize += scan_directory(path, de->d_name, sizeonly);
429  }
430  }
431  }
432  closedir(dir);
433  return dirsize;
434 }
435 
436 int
437 main(int argc, char *argv[])
438 {
439  static struct option long_options[] = {
440  {"check", no_argument, NULL, 'c'},
441  {"pgdata", required_argument, NULL, 'D'},
442  {"disable", no_argument, NULL, 'd'},
443  {"enable", no_argument, NULL, 'e'},
444  {"filenode", required_argument, NULL, 'f'},
445  {"no-sync", no_argument, NULL, 'N'},
446  {"progress", no_argument, NULL, 'P'},
447  {"verbose", no_argument, NULL, 'v'},
448  {NULL, 0, NULL, 0}
449  };
450 
451  char *DataDir = NULL;
452  int c;
453  int option_index;
454  bool crc_ok;
455 
456  pg_logging_init(argv[0]);
457  set_pglocale_pgservice(argv[0], PG_TEXTDOMAIN("pg_checksums"));
458  progname = get_progname(argv[0]);
459 
460  if (argc > 1)
461  {
462  if (strcmp(argv[1], "--help") == 0 || strcmp(argv[1], "-?") == 0)
463  {
464  usage();
465  exit(0);
466  }
467  if (strcmp(argv[1], "--version") == 0 || strcmp(argv[1], "-V") == 0)
468  {
469  puts("pg_checksums (PostgreSQL) " PG_VERSION);
470  exit(0);
471  }
472  }
473 
474  while ((c = getopt_long(argc, argv, "cdD:ef:NPv", long_options, &option_index)) != -1)
475  {
476  switch (c)
477  {
478  case 'c':
480  break;
481  case 'd':
483  break;
484  case 'D':
485  DataDir = optarg;
486  break;
487  case 'e':
489  break;
490  case 'f':
491  if (!option_parse_int(optarg, "-f/--filenode", 0,
492  INT_MAX,
493  NULL))
494  exit(1);
496  break;
497  case 'N':
498  do_sync = false;
499  break;
500  case 'P':
501  showprogress = true;
502  break;
503  case 'v':
504  verbose = true;
505  break;
506  default:
507  /* getopt_long already emitted a complaint */
508  pg_log_error_hint("Try \"%s --help\" for more information.", progname);
509  exit(1);
510  }
511  }
512 
513  if (DataDir == NULL)
514  {
515  if (optind < argc)
516  DataDir = argv[optind++];
517  else
518  DataDir = getenv("PGDATA");
519 
520  /* If no DataDir was specified, and none could be found, error out */
521  if (DataDir == NULL)
522  {
523  pg_log_error("no data directory specified");
524  pg_log_error_hint("Try \"%s --help\" for more information.", progname);
525  exit(1);
526  }
527  }
528 
529  /* Complain if any arguments remain */
530  if (optind < argc)
531  {
532  pg_log_error("too many command-line arguments (first is \"%s\")",
533  argv[optind]);
534  pg_log_error_hint("Try \"%s --help\" for more information.", progname);
535  exit(1);
536  }
537 
538  /* filenode checking only works in --check mode */
539  if (mode != PG_MODE_CHECK && only_filenode)
540  {
541  pg_log_error("option -f/--filenode can only be used with --check");
542  pg_log_error_hint("Try \"%s --help\" for more information.", progname);
543  exit(1);
544  }
545 
546  /* Read the control file and check compatibility */
547  ControlFile = get_controlfile(DataDir, &crc_ok);
548  if (!crc_ok)
549  pg_fatal("pg_control CRC value is incorrect");
550 
552  pg_fatal("cluster is not compatible with this version of pg_checksums");
553 
554  if (ControlFile->blcksz != BLCKSZ)
555  {
556  pg_log_error("database cluster is not compatible");
557  pg_log_error_detail("The database cluster was initialized with block size %u, but pg_checksums was compiled with block size %u.",
558  ControlFile->blcksz, BLCKSZ);
559  exit(1);
560  }
561 
562  /*
563  * Check if cluster is running. A clean shutdown is required to avoid
564  * random checksum failures caused by torn pages. Note that this doesn't
565  * guard against someone starting the cluster concurrently.
566  */
567  if (ControlFile->state != DB_SHUTDOWNED &&
569  pg_fatal("cluster must be shut down");
570 
572  mode == PG_MODE_CHECK)
573  pg_fatal("data checksums are not enabled in cluster");
574 
577  pg_fatal("data checksums are already disabled in cluster");
578 
580  mode == PG_MODE_ENABLE)
581  pg_fatal("data checksums are already enabled in cluster");
582 
583  /* Operate on all files if checking or enabling checksums */
584  if (mode == PG_MODE_CHECK || mode == PG_MODE_ENABLE)
585  {
586  /*
587  * If progress status information is requested, we need to scan the
588  * directory tree twice: once to know how much total data needs to be
589  * processed and once to do the real work.
590  */
591  if (showprogress)
592  {
593  total_size = scan_directory(DataDir, "global", true);
594  total_size += scan_directory(DataDir, "base", true);
595  total_size += scan_directory(DataDir, "pg_tblspc", true);
596  }
597 
598  (void) scan_directory(DataDir, "global", false);
599  (void) scan_directory(DataDir, "base", false);
600  (void) scan_directory(DataDir, "pg_tblspc", false);
601 
602  if (showprogress)
603  progress_report(true);
604 
605  printf(_("Checksum operation completed\n"));
606  printf(_("Files scanned: %lld\n"), (long long) files_scanned);
607  printf(_("Blocks scanned: %lld\n"), (long long) blocks_scanned);
608  if (mode == PG_MODE_CHECK)
609  {
610  printf(_("Bad checksums: %lld\n"), (long long) badblocks);
611  printf(_("Data checksum version: %u\n"), ControlFile->data_checksum_version);
612 
613  if (badblocks > 0)
614  exit(1);
615  }
616  else if (mode == PG_MODE_ENABLE)
617  {
618  printf(_("Files written: %lld\n"), (long long) files_written);
619  printf(_("Blocks written: %lld\n"), (long long) blocks_written);
620  }
621  }
622 
623  /*
624  * Finally make the data durable on disk if enabling or disabling
625  * checksums. Flush first the data directory for safety, and then update
626  * the control file to keep the switch consistent.
627  */
629  {
632 
633  if (do_sync)
634  {
635  pg_log_info("syncing data directory");
636  fsync_pgdata(DataDir, PG_VERSION_NUM);
637  }
638 
639  pg_log_info("updating control file");
641 
642  if (verbose)
643  printf(_("Data checksum version: %u\n"), ControlFile->data_checksum_version);
644  if (mode == PG_MODE_ENABLE)
645  printf(_("Checksums enabled in cluster\n"));
646  else
647  printf(_("Checksums disabled in cluster\n"));
648  }
649 
650  return 0;
651 }
Datum now(PG_FUNCTION_ARGS)
Definition: timestamp.c:1546
uint32 BlockNumber
Definition: block.h:31
PageHeaderData * PageHeader
Definition: bufpage.h:170
static bool PageIsNew(Page page)
Definition: bufpage.h:230
#define PG_DATA_CHECKSUM_VERSION
Definition: bufpage.h:203
unsigned short uint16
Definition: c.h:489
#define PG_TEXTDOMAIN(domain)
Definition: c.h:1204
#define PG_BINARY
Definition: c.h:1260
uint16 pg_checksum_page(char *page, BlockNumber blkno)
void set_pglocale_pgservice(const char *argv0, const char *app)
Definition: exec.c:436
void update_controlfile(const char *DataDir, ControlFileData *ControlFile, bool do_sync)
ControlFileData * get_controlfile(const char *DataDir, bool *crc_ok_p)
int closedir(DIR *)
Definition: dirent.c:127
struct dirent * readdir(DIR *)
Definition: dirent.c:78
DIR * opendir(const char *)
Definition: dirent.c:33
#define _(x)
Definition: elog.c:91
const char * name
Definition: encode.c:571
int getopt_long(int argc, char *const argv[], const char *optstring, const struct option *longopts, int *longindex)
Definition: getopt_long.c:57
#define no_argument
Definition: getopt_long.h:24
#define required_argument
Definition: getopt_long.h:25
char * DataDir
Definition: globals.c:66
#define close(a)
Definition: win32.h:12
#define write(a, b, c)
Definition: win32.h:14
#define read(a, b, c)
Definition: win32.h:13
Assert(fmt[strlen(fmt) - 1] !='\n')
exit(1)
void pg_logging_init(const char *argv0)
Definition: logging.c:83
#define pg_log_error(...)
Definition: logging.h:106
#define pg_log_error_hint(...)
Definition: logging.h:112
#define pg_log_info(...)
Definition: logging.h:124
#define pg_log_error_detail(...)
Definition: logging.h:109
char * pstrdup(const char *in)
Definition: mcxt.c:1624
bool option_parse_int(const char *optarg, const char *optname, int min_range, int max_range, int *result)
Definition: option_utils.c:50
#define pg_fatal(...)
static char * basedir
int main(int argc, char *argv[])
Definition: pg_checksums.c:437
static void scan_file(const char *fn, int segmentno)
Definition: pg_checksums.c:184
int64 total_size
Definition: pg_checksums.c:72
static PgChecksumMode mode
Definition: pg_checksums.c:65
static char * only_filenode
Definition: pg_checksums.c:43
static int64 blocks_scanned
Definition: pg_checksums.c:38
int64 current_size
Definition: pg_checksums.c:73
static void progress_report(bool finished)
Definition: pg_checksums.c:132
static pg_time_t last_progress_report
Definition: pg_checksums.c:74
static const struct exclude_list_item skip[]
Definition: pg_checksums.c:116
#define PG_TEMP_FILES_DIR
Definition: pg_checksums.c:62
#define PG_TEMP_FILE_PREFIX
Definition: pg_checksums.c:63
static int64 scan_directory(const char *basedir, const char *subdir, bool sizeonly)
Definition: pg_checksums.c:308
static int64 files_scanned
Definition: pg_checksums.c:36
static bool do_sync
Definition: pg_checksums.c:44
static bool verbose
Definition: pg_checksums.c:45
static bool skipfile(const char *fn)
Definition: pg_checksums.c:166
static ControlFileData * ControlFile
Definition: pg_checksums.c:41
static int64 blocks_written
Definition: pg_checksums.c:39
static bool showprogress
Definition: pg_checksums.c:46
static const char * progname
Definition: pg_checksums.c:67
static void usage(void)
Definition: pg_checksums.c:77
static int64 files_written
Definition: pg_checksums.c:37
PgChecksumMode
Definition: pg_checksums.c:49
@ PG_MODE_CHECK
Definition: pg_checksums.c:50
@ PG_MODE_DISABLE
Definition: pg_checksums.c:51
@ PG_MODE_ENABLE
Definition: pg_checksums.c:52
static int64 badblocks
Definition: pg_checksums.c:40
#define MAXPGPATH
#define PG_CONTROL_VERSION
Definition: pg_control.h:25
@ DB_SHUTDOWNED_IN_RECOVERY
Definition: pg_control.h:91
@ DB_SHUTDOWNED
Definition: pg_control.h:90
PGDLLIMPORT int optind
Definition: getopt.c:50
PGDLLIMPORT char * optarg
Definition: getopt.c:52
static void header(const char *fmt,...) pg_attribute_printf(1
Definition: pg_regress.c:207
static char * buf
Definition: pg_test_fsync.c:67
int64 pg_time_t
Definition: pgtime.h:23
const char * get_progname(const char *argv0)
Definition: path.c:574
#define snprintf
Definition: port.h:238
#define fprintf
Definition: port.h:242
#define printf(...)
Definition: port.h:244
size_t strlcpy(char *dst, const char *src, size_t siz)
Definition: strlcpy.c:45
char * c
#define TABLESPACE_VERSION_DIRECTORY
Definition: relpath.h:33
uint32 pg_control_version
Definition: pg_control.h:123
uint32 data_checksum_version
Definition: pg_control.h:220
Definition: dirent.c:26
Definition: dirent.h:10
char d_name[MAX_PATH]
Definition: dirent.h:15
const char * name
Definition: basebackup.c:118
__int64 st_size
Definition: win32_port.h:275
unsigned short st_mode
Definition: win32_port.h:270
static void * fn(void *arg)
#define lstat(path, sb)
Definition: win32_port.h:287
#define S_ISDIR(m)
Definition: win32_port.h:327
#define S_ISLNK(m)
Definition: win32_port.h:346
#define S_ISREG(m)
Definition: win32_port.h:330