LCOV - code coverage report
Current view: top level - src/bin/initdb - initdb.c (source / functions) Hit Total Coverage
Test: PostgreSQL 18devel Lines: 1006 1230 81.8 %
Date: 2024-11-10 05:14:33 Functions: 62 64 96.9 %
Legend: Lines: hit not hit

          Line data    Source code
       1             : /*-------------------------------------------------------------------------
       2             :  *
       3             :  * initdb --- initialize a PostgreSQL installation
       4             :  *
       5             :  * initdb creates (initializes) a PostgreSQL database cluster (site,
       6             :  * instance, installation, whatever).  A database cluster is a
       7             :  * collection of PostgreSQL databases all managed by the same server.
       8             :  *
       9             :  * To create the database cluster, we create the directory that contains
      10             :  * all its data, create the files that hold the global tables, create
      11             :  * a few other control files for it, and create three databases: the
      12             :  * template databases "template0" and "template1", and a default user
      13             :  * database "postgres".
      14             :  *
      15             :  * The template databases are ordinary PostgreSQL databases.  template0
      16             :  * is never supposed to change after initdb, whereas template1 can be
      17             :  * changed to add site-local standard data.  Either one can be copied
      18             :  * to produce a new database.
      19             :  *
      20             :  * For largely-historical reasons, the template1 database is the one built
      21             :  * by the basic bootstrap process.  After it is complete, template0 and
      22             :  * the default database, postgres, are made just by copying template1.
      23             :  *
      24             :  * To create template1, we run the postgres (backend) program in bootstrap
      25             :  * mode and feed it data from the postgres.bki library file.  After this
      26             :  * initial bootstrap phase, some additional stuff is created by normal
      27             :  * SQL commands fed to a standalone backend.  Some of those commands are
      28             :  * just embedded into this program (yeah, it's ugly), but larger chunks
      29             :  * are taken from script files.
      30             :  *
      31             :  *
      32             :  * Note:
      33             :  *   The program has some memory leakage - it isn't worth cleaning it up.
      34             :  *
      35             :  * This is a C implementation of the previous shell script for setting up a
      36             :  * PostgreSQL cluster location, and should be highly compatible with it.
      37             :  * author of C translation: Andrew Dunstan     mailto:andrew@dunslane.net
      38             :  *
      39             :  * This code is released under the terms of the PostgreSQL License.
      40             :  *
      41             :  * Portions Copyright (c) 1996-2024, PostgreSQL Global Development Group
      42             :  * Portions Copyright (c) 1994, Regents of the University of California
      43             :  *
      44             :  * src/bin/initdb/initdb.c
      45             :  *
      46             :  *-------------------------------------------------------------------------
      47             :  */
      48             : 
      49             : #include "postgres_fe.h"
      50             : 
      51             : #include <dirent.h>
      52             : #include <fcntl.h>
      53             : #include <netdb.h>
      54             : #include <sys/socket.h>
      55             : #include <sys/stat.h>
      56             : #ifdef USE_ICU
      57             : #include <unicode/ucol.h>
      58             : #endif
      59             : #include <unistd.h>
      60             : #include <signal.h>
      61             : #include <time.h>
      62             : 
      63             : #ifdef HAVE_SHM_OPEN
      64             : #include "sys/mman.h"
      65             : #endif
      66             : 
      67             : #include "access/xlog_internal.h"
      68             : #include "catalog/pg_authid_d.h"
      69             : #include "catalog/pg_class_d.h" /* pgrminclude ignore */
      70             : #include "catalog/pg_collation_d.h"
      71             : #include "catalog/pg_database_d.h"    /* pgrminclude ignore */
      72             : #include "common/file_perm.h"
      73             : #include "common/file_utils.h"
      74             : #include "common/logging.h"
      75             : #include "common/pg_prng.h"
      76             : #include "common/restricted_token.h"
      77             : #include "common/string.h"
      78             : #include "common/username.h"
      79             : #include "fe_utils/option_utils.h"
      80             : #include "fe_utils/string_utils.h"
      81             : #include "getopt_long.h"
      82             : #include "mb/pg_wchar.h"
      83             : #include "miscadmin.h"
      84             : 
      85             : 
      86             : /* Ideally this would be in a .h file, but it hardly seems worth the trouble */
      87             : extern const char *select_default_timezone(const char *share_path);
      88             : 
      89             : /* simple list of strings */
      90             : typedef struct _stringlist
      91             : {
      92             :     char       *str;
      93             :     struct _stringlist *next;
      94             : } _stringlist;
      95             : 
      96             : static const char *const auth_methods_host[] = {
      97             :     "trust", "reject", "scram-sha-256", "md5", "password", "ident", "radius",
      98             : #ifdef ENABLE_GSS
      99             :     "gss",
     100             : #endif
     101             : #ifdef ENABLE_SSPI
     102             :     "sspi",
     103             : #endif
     104             : #ifdef USE_PAM
     105             :     "pam",
     106             : #endif
     107             : #ifdef USE_BSD_AUTH
     108             :     "bsd",
     109             : #endif
     110             : #ifdef USE_LDAP
     111             :     "ldap",
     112             : #endif
     113             : #ifdef USE_SSL
     114             :     "cert",
     115             : #endif
     116             :     NULL
     117             : };
     118             : static const char *const auth_methods_local[] = {
     119             :     "trust", "reject", "scram-sha-256", "md5", "password", "peer", "radius",
     120             : #ifdef USE_PAM
     121             :     "pam",
     122             : #endif
     123             : #ifdef USE_BSD_AUTH
     124             :     "bsd",
     125             : #endif
     126             : #ifdef USE_LDAP
     127             :     "ldap",
     128             : #endif
     129             :     NULL
     130             : };
     131             : 
     132             : /*
     133             :  * these values are passed in by makefile defines
     134             :  */
     135             : static char *share_path = NULL;
     136             : 
     137             : /* values to be obtained from arguments */
     138             : static char *pg_data = NULL;
     139             : static char *encoding = NULL;
     140             : static char *locale = NULL;
     141             : static char *lc_collate = NULL;
     142             : static char *lc_ctype = NULL;
     143             : static char *lc_monetary = NULL;
     144             : static char *lc_numeric = NULL;
     145             : static char *lc_time = NULL;
     146             : static char *lc_messages = NULL;
     147             : static char locale_provider = COLLPROVIDER_LIBC;
     148             : static bool builtin_locale_specified = false;
     149             : static char *datlocale = NULL;
     150             : static bool icu_locale_specified = false;
     151             : static char *icu_rules = NULL;
     152             : static const char *default_text_search_config = NULL;
     153             : static char *username = NULL;
     154             : static bool pwprompt = false;
     155             : static char *pwfilename = NULL;
     156             : static char *superuser_password = NULL;
     157             : static const char *authmethodhost = NULL;
     158             : static const char *authmethodlocal = NULL;
     159             : static _stringlist *extra_guc_names = NULL;
     160             : static _stringlist *extra_guc_values = NULL;
     161             : static bool debug = false;
     162             : static bool noclean = false;
     163             : static bool noinstructions = false;
     164             : static bool do_sync = true;
     165             : static bool sync_only = false;
     166             : static bool show_setting = false;
     167             : static bool data_checksums = true;
     168             : static char *xlog_dir = NULL;
     169             : static int  wal_segment_size_mb = (DEFAULT_XLOG_SEG_SIZE) / (1024 * 1024);
     170             : static DataDirSyncMethod sync_method = DATA_DIR_SYNC_METHOD_FSYNC;
     171             : 
     172             : 
     173             : /* internal vars */
     174             : static const char *progname;
     175             : static int  encodingid;
     176             : static char *bki_file;
     177             : static char *hba_file;
     178             : static char *ident_file;
     179             : static char *conf_file;
     180             : static char *dictionary_file;
     181             : static char *info_schema_file;
     182             : static char *features_file;
     183             : static char *system_constraints_file;
     184             : static char *system_functions_file;
     185             : static char *system_views_file;
     186             : static bool success = false;
     187             : static bool made_new_pgdata = false;
     188             : static bool found_existing_pgdata = false;
     189             : static bool made_new_xlogdir = false;
     190             : static bool found_existing_xlogdir = false;
     191             : static char infoversion[100];
     192             : static bool caught_signal = false;
     193             : static bool output_failed = false;
     194             : static int  output_errno = 0;
     195             : static char *pgdata_native;
     196             : 
     197             : /* defaults */
     198             : static int  n_connections = 10;
     199             : static int  n_buffers = 50;
     200             : static const char *dynamic_shared_memory_type = NULL;
     201             : static const char *default_timezone = NULL;
     202             : 
     203             : /*
     204             :  * Warning messages for authentication methods
     205             :  */
     206             : #define AUTHTRUST_WARNING \
     207             : "# CAUTION: Configuring the system for local \"trust\" authentication\n" \
     208             : "# allows any local user to connect as any PostgreSQL user, including\n" \
     209             : "# the database superuser.  If you do not trust all your local users,\n" \
     210             : "# use another authentication method.\n"
     211             : static bool authwarning = false;
     212             : 
     213             : /*
     214             :  * Centralized knowledge of switches to pass to backend
     215             :  *
     216             :  * Note: we run the backend with -F (fsync disabled) and then do a single
     217             :  * pass of fsync'ing at the end.  This is faster than fsync'ing each step.
     218             :  *
     219             :  * Note: in the shell-script version, we also passed PGDATA as a -D switch,
     220             :  * but here it is more convenient to pass it as an environment variable
     221             :  * (no quoting to worry about).
     222             :  */
     223             : static const char *const boot_options = "-F -c log_checkpoints=false";
     224             : static const char *const backend_options = "--single -F -O -j -c search_path=pg_catalog -c exit_on_error=true -c log_checkpoints=false";
     225             : 
     226             : /* Additional switches to pass to backend (either boot or standalone) */
     227             : static char *extra_options = "";
     228             : 
     229             : static const char *const subdirs[] = {
     230             :     "global",
     231             :     "pg_wal/archive_status",
     232             :     "pg_wal/summaries",
     233             :     "pg_commit_ts",
     234             :     "pg_dynshmem",
     235             :     "pg_notify",
     236             :     "pg_serial",
     237             :     "pg_snapshots",
     238             :     "pg_subtrans",
     239             :     "pg_twophase",
     240             :     "pg_multixact",
     241             :     "pg_multixact/members",
     242             :     "pg_multixact/offsets",
     243             :     "base",
     244             :     "base/1",
     245             :     "pg_replslot",
     246             :     "pg_tblspc",
     247             :     "pg_stat",
     248             :     "pg_stat_tmp",
     249             :     "pg_xact",
     250             :     "pg_logical",
     251             :     "pg_logical/snapshots",
     252             :     "pg_logical/mappings"
     253             : };
     254             : 
     255             : 
     256             : /* path to 'initdb' binary directory */
     257             : static char bin_path[MAXPGPATH];
     258             : static char backend_exec[MAXPGPATH];
     259             : 
     260             : static char **replace_token(char **lines,
     261             :                             const char *token, const char *replacement);
     262             : static char **replace_guc_value(char **lines,
     263             :                                 const char *guc_name, const char *guc_value,
     264             :                                 bool mark_as_comment);
     265             : static bool guc_value_requires_quotes(const char *guc_value);
     266             : static char **readfile(const char *path);
     267             : static void writefile(char *path, char **lines);
     268             : static FILE *popen_check(const char *command, const char *mode);
     269             : static char *get_id(void);
     270             : static int  get_encoding_id(const char *encoding_name);
     271             : static void set_input(char **dest, const char *filename);
     272             : static void check_input(char *path);
     273             : static void write_version_file(const char *extrapath);
     274             : static void set_null_conf(void);
     275             : static void test_config_settings(void);
     276             : static bool test_specific_config_settings(int test_conns, int test_buffs);
     277             : static void setup_config(void);
     278             : static void bootstrap_template1(void);
     279             : static void setup_auth(FILE *cmdfd);
     280             : static void get_su_pwd(void);
     281             : static void setup_depend(FILE *cmdfd);
     282             : static void setup_run_file(FILE *cmdfd, const char *filename);
     283             : static void setup_description(FILE *cmdfd);
     284             : static void setup_collation(FILE *cmdfd);
     285             : static void setup_privileges(FILE *cmdfd);
     286             : static void set_info_version(void);
     287             : static void setup_schema(FILE *cmdfd);
     288             : static void load_plpgsql(FILE *cmdfd);
     289             : static void vacuum_db(FILE *cmdfd);
     290             : static void make_template0(FILE *cmdfd);
     291             : static void make_postgres(FILE *cmdfd);
     292             : static void trapsig(SIGNAL_ARGS);
     293             : static void check_ok(void);
     294             : static char *escape_quotes(const char *src);
     295             : static char *escape_quotes_bki(const char *src);
     296             : static int  locale_date_order(const char *locale);
     297             : static void check_locale_name(int category, const char *locale,
     298             :                               char **canonname);
     299             : static bool check_locale_encoding(const char *locale, int user_enc);
     300             : static void setlocales(void);
     301             : static void usage(const char *progname);
     302             : void        setup_pgdata(void);
     303             : void        setup_bin_paths(const char *argv0);
     304             : void        setup_data_file_paths(void);
     305             : void        setup_locale_encoding(void);
     306             : void        setup_signals(void);
     307             : void        setup_text_search(void);
     308             : void        create_data_directory(void);
     309             : void        create_xlog_or_symlink(void);
     310             : void        warn_on_mount_point(int error);
     311             : void        initialize_data_directory(void);
     312             : 
     313             : /*
     314             :  * macros for running pipes to postgres
     315             :  */
     316             : #define PG_CMD_DECL     FILE *cmdfd
     317             : 
     318             : #define PG_CMD_OPEN(cmd) \
     319             : do { \
     320             :     cmdfd = popen_check(cmd, "w"); \
     321             :     if (cmdfd == NULL) \
     322             :         exit(1); /* message already printed by popen_check */ \
     323             : } while (0)
     324             : 
     325             : #define PG_CMD_CLOSE() \
     326             : do { \
     327             :     if (pclose_check(cmdfd)) \
     328             :         exit(1); /* message already printed by pclose_check */ \
     329             : } while (0)
     330             : 
     331             : #define PG_CMD_PUTS(line) \
     332             : do { \
     333             :     if (fputs(line, cmdfd) < 0 || fflush(cmdfd) < 0) \
     334             :         output_failed = true, output_errno = errno; \
     335             : } while (0)
     336             : 
     337             : #define PG_CMD_PRINTF(fmt, ...) \
     338             : do { \
     339             :     if (fprintf(cmdfd, fmt, __VA_ARGS__) < 0 || fflush(cmdfd) < 0) \
     340             :         output_failed = true, output_errno = errno; \
     341             : } while (0)
     342             : 
     343             : #ifdef WIN32
     344             : typedef wchar_t *save_locale_t;
     345             : #else
     346             : typedef char *save_locale_t;
     347             : #endif
     348             : 
     349             : /*
     350             :  * Save a copy of the current global locale's name, for the given category.
     351             :  * The returned value must be passed to restore_global_locale().
     352             :  *
     353             :  * Since names from the environment haven't been vetted for non-ASCII
     354             :  * characters, we use the wchar_t variant of setlocale() on Windows.  Otherwise
     355             :  * they might not survive a save-restore round trip: when restoring, the name
     356             :  * itself might be interpreted with a different encoding by plain setlocale(),
     357             :  * after we switch to another locale in between.  (This is a problem only in
     358             :  * initdb, not in similar backend code where the global locale's name should
     359             :  * already have been verified as ASCII-only.)
     360             :  */
     361             : static save_locale_t
     362         740 : save_global_locale(int category)
     363             : {
     364             :     save_locale_t save;
     365             : 
     366             : #ifdef WIN32
     367             :     save = _wsetlocale(category, NULL);
     368             :     if (!save)
     369             :         pg_fatal("_wsetlocale() failed");
     370             :     save = wcsdup(save);
     371             :     if (!save)
     372             :         pg_fatal("out of memory");
     373             : #else
     374         740 :     save = setlocale(category, NULL);
     375         740 :     if (!save)
     376           0 :         pg_fatal("setlocale() failed");
     377         740 :     save = pg_strdup(save);
     378             : #endif
     379         740 :     return save;
     380             : }
     381             : 
     382             : /*
     383             :  * Restore the global locale returned by save_global_locale().
     384             :  */
     385             : static void
     386         740 : restore_global_locale(int category, save_locale_t save)
     387             : {
     388             : #ifdef WIN32
     389             :     if (!_wsetlocale(category, save))
     390             :         pg_fatal("failed to restore old locale");
     391             : #else
     392         740 :     if (!setlocale(category, save))
     393           0 :         pg_fatal("failed to restore old locale \"%s\"", save);
     394             : #endif
     395         740 :     free(save);
     396         740 : }
     397             : 
     398             : /*
     399             :  * Escape single quotes and backslashes, suitably for insertions into
     400             :  * configuration files or SQL E'' strings.
     401             :  */
     402             : static char *
     403        1108 : escape_quotes(const char *src)
     404             : {
     405        1108 :     char       *result = escape_single_quotes_ascii(src);
     406             : 
     407        1108 :     if (!result)
     408           0 :         pg_fatal("out of memory");
     409        1108 :     return result;
     410             : }
     411             : 
     412             : /*
     413             :  * Escape a field value to be inserted into the BKI data.
     414             :  * Run the value through escape_quotes (which will be inverted
     415             :  * by the backend's DeescapeQuotedString() function), then wrap
     416             :  * the value in single quotes, even if that isn't strictly necessary.
     417             :  */
     418             : static char *
     419         294 : escape_quotes_bki(const char *src)
     420             : {
     421             :     char       *result;
     422         294 :     char       *data = escape_quotes(src);
     423             :     char       *resultp;
     424             :     char       *datap;
     425             : 
     426         294 :     result = (char *) pg_malloc(strlen(data) + 3);
     427         294 :     resultp = result;
     428         294 :     *resultp++ = '\'';
     429        2396 :     for (datap = data; *datap; datap++)
     430        2102 :         *resultp++ = *datap;
     431         294 :     *resultp++ = '\'';
     432         294 :     *resultp = '\0';
     433             : 
     434         294 :     free(data);
     435         294 :     return result;
     436             : }
     437             : 
     438             : /*
     439             :  * Add an item at the end of a stringlist.
     440             :  */
     441             : static void
     442          20 : add_stringlist_item(_stringlist **listhead, const char *str)
     443             : {
     444          20 :     _stringlist *newentry = pg_malloc(sizeof(_stringlist));
     445             :     _stringlist *oldentry;
     446             : 
     447          20 :     newentry->str = pg_strdup(str);
     448          20 :     newentry->next = NULL;
     449          20 :     if (*listhead == NULL)
     450          12 :         *listhead = newentry;
     451             :     else
     452             :     {
     453          12 :         for (oldentry = *listhead; oldentry->next; oldentry = oldentry->next)
     454             :              /* skip */ ;
     455           8 :         oldentry->next = newentry;
     456             :     }
     457          20 : }
     458             : 
     459             : /*
     460             :  * Modify the array of lines, replacing "token" by "replacement"
     461             :  * the first time it occurs on each line.
     462             :  *
     463             :  * The array must be a malloc'd array of individually malloc'd strings.
     464             :  * We free any discarded strings.
     465             :  *
     466             :  * This does most of what sed was used for in the shell script, but
     467             :  * doesn't need any regexp stuff.
     468             :  */
     469             : static char **
     470        1380 : replace_token(char **lines, const char *token, const char *replacement)
     471             : {
     472             :     int         toklen,
     473             :                 replen,
     474             :                 diff;
     475             : 
     476        1380 :     toklen = strlen(token);
     477        1380 :     replen = strlen(replacement);
     478        1380 :     diff = replen - toklen;
     479             : 
     480    11953468 :     for (int i = 0; lines[i]; i++)
     481             :     {
     482             :         char       *where;
     483             :         char       *newline;
     484             :         int         pre;
     485             : 
     486             :         /* nothing to do if no change needed */
     487    11952088 :         if ((where = strstr(lines[i], token)) == NULL)
     488    11948960 :             continue;
     489             : 
     490             :         /* if we get here a change is needed - set up new line */
     491             : 
     492        3128 :         newline = (char *) pg_malloc(strlen(lines[i]) + diff + 1);
     493             : 
     494        3128 :         pre = where - lines[i];
     495             : 
     496        3128 :         memcpy(newline, lines[i], pre);
     497             : 
     498        3128 :         memcpy(newline + pre, replacement, replen);
     499             : 
     500        3128 :         strcpy(newline + pre + replen, lines[i] + pre + toklen);
     501             : 
     502        3128 :         free(lines[i]);
     503        3128 :         lines[i] = newline;
     504             :     }
     505             : 
     506        1380 :     return lines;
     507             : }
     508             : 
     509             : /*
     510             :  * Modify the array of lines, replacing the possibly-commented-out
     511             :  * assignment of parameter guc_name with a live assignment of guc_value.
     512             :  * The value will be suitably quoted.
     513             :  *
     514             :  * If mark_as_comment is true, the replacement line is prefixed with '#'.
     515             :  * This is used for fixing up cases where the effective default might not
     516             :  * match what is in postgresql.conf.sample.
     517             :  *
     518             :  * We assume there's at most one matching assignment.  If we find no match,
     519             :  * append a new line with the desired assignment.
     520             :  *
     521             :  * The array must be a malloc'd array of individually malloc'd strings.
     522             :  * We free any discarded strings.
     523             :  */
     524             : static char **
     525        1584 : replace_guc_value(char **lines, const char *guc_name, const char *guc_value,
     526             :                   bool mark_as_comment)
     527             : {
     528        1584 :     int         namelen = strlen(guc_name);
     529        1584 :     PQExpBuffer newline = createPQExpBuffer();
     530             :     int         i;
     531             : 
     532             :     /* prepare the replacement line, except for possible comment and newline */
     533        1584 :     if (mark_as_comment)
     534         368 :         appendPQExpBufferChar(newline, '#');
     535        1584 :     appendPQExpBuffer(newline, "%s = ", guc_name);
     536        1584 :     if (guc_value_requires_quotes(guc_value))
     537         634 :         appendPQExpBuffer(newline, "'%s'", escape_quotes(guc_value));
     538             :     else
     539         950 :         appendPQExpBufferStr(newline, guc_value);
     540             : 
     541      683842 :     for (i = 0; lines[i]; i++)
     542             :     {
     543             :         const char *where;
     544             :         const char *namestart;
     545             : 
     546             :         /*
     547             :          * Look for a line assigning to guc_name.  Typically it will be
     548             :          * preceded by '#', but that might not be the case if a -c switch
     549             :          * overrides a previous assignment.  We allow leading whitespace too,
     550             :          * although normally there wouldn't be any.
     551             :          */
     552      683840 :         where = lines[i];
     553     2887944 :         while (*where == '#' || isspace((unsigned char) *where))
     554     2204104 :             where++;
     555      683840 :         if (pg_strncasecmp(where, guc_name, namelen) != 0)
     556      682258 :             continue;
     557        1582 :         namestart = where;
     558        1582 :         where += namelen;
     559        3164 :         while (isspace((unsigned char) *where))
     560        1582 :             where++;
     561        1582 :         if (*where != '=')
     562           0 :             continue;
     563             : 
     564             :         /* found it -- let's use the canonical casing shown in the file */
     565        1582 :         memcpy(&newline->data[mark_as_comment ? 1 : 0], namestart, namelen);
     566             : 
     567             :         /* now append the original comment if any */
     568        1582 :         where = strrchr(where, '#');
     569        1582 :         if (where)
     570             :         {
     571             :             /*
     572             :              * We try to preserve original indentation, which is tedious.
     573             :              * oldindent and newindent are measured in de-tab-ified columns.
     574             :              */
     575             :             const char *ptr;
     576        1028 :             int         oldindent = 0;
     577             :             int         newindent;
     578             : 
     579       26402 :             for (ptr = lines[i]; ptr < where; ptr++)
     580             :             {
     581       25374 :                 if (*ptr == '\t')
     582        2722 :                     oldindent += 8 - (oldindent % 8);
     583             :                 else
     584       22652 :                     oldindent++;
     585             :             }
     586             :             /* ignore the possibility of tabs in guc_value */
     587        1028 :             newindent = newline->len;
     588             :             /* append appropriate tabs and spaces, forcing at least one */
     589        1028 :             oldindent = Max(oldindent, newindent + 1);
     590        3736 :             while (newindent < oldindent)
     591             :             {
     592        2708 :                 int         newindent_if_tab = newindent + 8 - (newindent % 8);
     593             : 
     594        2708 :                 if (newindent_if_tab <= oldindent)
     595             :                 {
     596        2708 :                     appendPQExpBufferChar(newline, '\t');
     597        2708 :                     newindent = newindent_if_tab;
     598             :                 }
     599             :                 else
     600             :                 {
     601           0 :                     appendPQExpBufferChar(newline, ' ');
     602           0 :                     newindent++;
     603             :                 }
     604             :             }
     605             :             /* and finally append the old comment */
     606        1028 :             appendPQExpBufferStr(newline, where);
     607             :             /* we'll have appended the original newline; don't add another */
     608             :         }
     609             :         else
     610         554 :             appendPQExpBufferChar(newline, '\n');
     611             : 
     612        1582 :         free(lines[i]);
     613        1582 :         lines[i] = newline->data;
     614             : 
     615        1582 :         break;                  /* assume there's only one match */
     616             :     }
     617             : 
     618        1584 :     if (lines[i] == NULL)
     619             :     {
     620             :         /*
     621             :          * No match, so append a new entry.  (We rely on the bootstrap server
     622             :          * to complain if it's not a valid GUC name.)
     623             :          */
     624           2 :         appendPQExpBufferChar(newline, '\n');
     625           2 :         lines = pg_realloc_array(lines, char *, i + 2);
     626           2 :         lines[i++] = newline->data;
     627           2 :         lines[i] = NULL;        /* keep the array null-terminated */
     628             :     }
     629             : 
     630        1584 :     free(newline);              /* but don't free newline->data */
     631             : 
     632        1584 :     return lines;
     633             : }
     634             : 
     635             : /*
     636             :  * Decide if we should quote a replacement GUC value.  We aren't too tense
     637             :  * here, but we'd like to avoid quoting simple identifiers and numbers
     638             :  * with units, which are common cases.
     639             :  */
     640             : static bool
     641        1584 : guc_value_requires_quotes(const char *guc_value)
     642             : {
     643             :     /* Don't use <ctype.h> macros here, they might accept too much */
     644             : #define LETTERS "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ"
     645             : #define DIGITS  "0123456789"
     646             : 
     647        1584 :     if (*guc_value == '\0')
     648           0 :         return true;            /* empty string must be quoted */
     649        1584 :     if (strchr(LETTERS, *guc_value))
     650             :     {
     651         832 :         if (strspn(guc_value, LETTERS DIGITS) == strlen(guc_value))
     652         290 :             return false;       /* it's an identifier */
     653         542 :         return true;            /* nope */
     654             :     }
     655         752 :     if (strchr(DIGITS, *guc_value))
     656             :     {
     657             :         /* skip over digits */
     658         660 :         guc_value += strspn(guc_value, DIGITS);
     659             :         /* there can be zero or more unit letters after the digits */
     660         660 :         if (strspn(guc_value, LETTERS) == strlen(guc_value))
     661         660 :             return false;       /* it's a number, possibly with units */
     662           0 :         return true;            /* nope */
     663             :     }
     664          92 :     return true;                /* all else must be quoted */
     665             : }
     666             : 
     667             : /*
     668             :  * get the lines from a text file
     669             :  *
     670             :  * The result is a malloc'd array of individually malloc'd strings.
     671             :  */
     672             : static char **
     673         818 : readfile(const char *path)
     674             : {
     675             :     char      **result;
     676             :     FILE       *infile;
     677             :     StringInfoData line;
     678             :     int         maxlines;
     679             :     int         n;
     680             : 
     681         818 :     if ((infile = fopen(path, "r")) == NULL)
     682           0 :         pg_fatal("could not open file \"%s\" for reading: %m", path);
     683             : 
     684         818 :     initStringInfo(&line);
     685             : 
     686         818 :     maxlines = 1024;
     687         818 :     result = (char **) pg_malloc(maxlines * sizeof(char *));
     688             : 
     689         818 :     n = 0;
     690     1776924 :     while (pg_get_line_buf(infile, &line))
     691             :     {
     692             :         /* make sure there will be room for a trailing NULL pointer */
     693     1776106 :         if (n >= maxlines - 1)
     694             :         {
     695         728 :             maxlines *= 2;
     696         728 :             result = (char **) pg_realloc(result, maxlines * sizeof(char *));
     697             :         }
     698             : 
     699     1776106 :         result[n++] = pg_strdup(line.data);
     700             :     }
     701         818 :     result[n] = NULL;
     702             : 
     703         818 :     pfree(line.data);
     704             : 
     705         818 :     fclose(infile);
     706             : 
     707         818 :     return result;
     708             : }
     709             : 
     710             : /*
     711             :  * write an array of lines to a file
     712             :  *
     713             :  * "lines" must be a malloc'd array of individually malloc'd strings.
     714             :  * All that data is freed here.
     715             :  *
     716             :  * This is only used to write text files.  Use fopen "w" not PG_BINARY_W
     717             :  * so that the resulting configuration files are nicely editable on Windows.
     718             :  */
     719             : static void
     720         368 : writefile(char *path, char **lines)
     721             : {
     722             :     FILE       *out_file;
     723             :     char      **line;
     724             : 
     725         368 :     if ((out_file = fopen(path, "w")) == NULL)
     726           0 :         pg_fatal("could not open file \"%s\" for writing: %m", path);
     727       95958 :     for (line = lines; *line != NULL; line++)
     728             :     {
     729       95590 :         if (fputs(*line, out_file) < 0)
     730           0 :             pg_fatal("could not write file \"%s\": %m", path);
     731       95590 :         free(*line);
     732             :     }
     733         368 :     if (fclose(out_file))
     734           0 :         pg_fatal("could not close file \"%s\": %m", path);
     735         368 :     free(lines);
     736         368 : }
     737             : 
     738             : /*
     739             :  * Open a subcommand with suitable error messaging
     740             :  */
     741             : static FILE *
     742         182 : popen_check(const char *command, const char *mode)
     743             : {
     744             :     FILE       *cmdfd;
     745             : 
     746         182 :     fflush(NULL);
     747         182 :     errno = 0;
     748         182 :     cmdfd = popen(command, mode);
     749         182 :     if (cmdfd == NULL)
     750           0 :         pg_log_error("could not execute command \"%s\": %m", command);
     751         182 :     return cmdfd;
     752             : }
     753             : 
     754             : /*
     755             :  * clean up any files we created on failure
     756             :  * if we created the data directory remove it too
     757             :  */
     758             : static void
     759         116 : cleanup_directories_atexit(void)
     760             : {
     761         116 :     if (success)
     762          86 :         return;
     763             : 
     764          30 :     if (!noclean)
     765             :     {
     766          30 :         if (made_new_pgdata)
     767             :         {
     768          10 :             pg_log_info("removing data directory \"%s\"", pg_data);
     769          10 :             if (!rmtree(pg_data, true))
     770           0 :                 pg_log_error("failed to remove data directory");
     771             :         }
     772          20 :         else if (found_existing_pgdata)
     773             :         {
     774           0 :             pg_log_info("removing contents of data directory \"%s\"",
     775             :                         pg_data);
     776           0 :             if (!rmtree(pg_data, false))
     777           0 :                 pg_log_error("failed to remove contents of data directory");
     778             :         }
     779             : 
     780          30 :         if (made_new_xlogdir)
     781             :         {
     782           0 :             pg_log_info("removing WAL directory \"%s\"", xlog_dir);
     783           0 :             if (!rmtree(xlog_dir, true))
     784           0 :                 pg_log_error("failed to remove WAL directory");
     785             :         }
     786          30 :         else if (found_existing_xlogdir)
     787             :         {
     788           0 :             pg_log_info("removing contents of WAL directory \"%s\"", xlog_dir);
     789           0 :             if (!rmtree(xlog_dir, false))
     790           0 :                 pg_log_error("failed to remove contents of WAL directory");
     791             :         }
     792             :         /* otherwise died during startup, do nothing! */
     793             :     }
     794             :     else
     795             :     {
     796           0 :         if (made_new_pgdata || found_existing_pgdata)
     797           0 :             pg_log_info("data directory \"%s\" not removed at user's request",
     798             :                         pg_data);
     799             : 
     800           0 :         if (made_new_xlogdir || found_existing_xlogdir)
     801           0 :             pg_log_info("WAL directory \"%s\" not removed at user's request",
     802             :                         xlog_dir);
     803             :     }
     804             : }
     805             : 
     806             : /*
     807             :  * find the current user
     808             :  *
     809             :  * on unix make sure it isn't root
     810             :  */
     811             : static char *
     812         110 : get_id(void)
     813             : {
     814             :     const char *username;
     815             : 
     816             : #ifndef WIN32
     817         110 :     if (geteuid() == 0)         /* 0 is root's uid */
     818             :     {
     819           0 :         pg_log_error("cannot be run as root");
     820           0 :         pg_log_error_hint("Please log in (using, e.g., \"su\") as the (unprivileged) user that will own the server process.");
     821           0 :         exit(1);
     822             :     }
     823             : #endif
     824             : 
     825         110 :     username = get_user_name_or_exit(progname);
     826             : 
     827         110 :     return pg_strdup(username);
     828             : }
     829             : 
     830             : static char *
     831          92 : encodingid_to_string(int enc)
     832             : {
     833             :     char        result[20];
     834             : 
     835          92 :     sprintf(result, "%d", enc);
     836          92 :     return pg_strdup(result);
     837             : }
     838             : 
     839             : /*
     840             :  * get the encoding id for a given encoding name
     841             :  */
     842             : static int
     843          32 : get_encoding_id(const char *encoding_name)
     844             : {
     845             :     int         enc;
     846             : 
     847          32 :     if (encoding_name && *encoding_name)
     848             :     {
     849          32 :         if ((enc = pg_valid_server_encoding(encoding_name)) >= 0)
     850          32 :             return enc;
     851             :     }
     852           0 :     pg_fatal("\"%s\" is not a valid server encoding name",
     853             :              encoding_name ? encoding_name : "(null)");
     854             : }
     855             : 
     856             : /*
     857             :  * Support for determining the best default text search configuration.
     858             :  * We key this off the first part of LC_CTYPE (ie, the language name).
     859             :  */
     860             : struct tsearch_config_match
     861             : {
     862             :     const char *tsconfname;
     863             :     const char *langname;
     864             : };
     865             : 
     866             : static const struct tsearch_config_match tsearch_config_languages[] =
     867             : {
     868             :     {"arabic", "ar"},
     869             :     {"arabic", "Arabic"},
     870             :     {"armenian", "hy"},
     871             :     {"armenian", "Armenian"},
     872             :     {"basque", "eu"},
     873             :     {"basque", "Basque"},
     874             :     {"catalan", "ca"},
     875             :     {"catalan", "Catalan"},
     876             :     {"danish", "da"},
     877             :     {"danish", "Danish"},
     878             :     {"dutch", "nl"},
     879             :     {"dutch", "Dutch"},
     880             :     {"english", "C"},
     881             :     {"english", "POSIX"},
     882             :     {"english", "en"},
     883             :     {"english", "English"},
     884             :     {"finnish", "fi"},
     885             :     {"finnish", "Finnish"},
     886             :     {"french", "fr"},
     887             :     {"french", "French"},
     888             :     {"german", "de"},
     889             :     {"german", "German"},
     890             :     {"greek", "el"},
     891             :     {"greek", "Greek"},
     892             :     {"hindi", "hi"},
     893             :     {"hindi", "Hindi"},
     894             :     {"hungarian", "hu"},
     895             :     {"hungarian", "Hungarian"},
     896             :     {"indonesian", "id"},
     897             :     {"indonesian", "Indonesian"},
     898             :     {"irish", "ga"},
     899             :     {"irish", "Irish"},
     900             :     {"italian", "it"},
     901             :     {"italian", "Italian"},
     902             :     {"lithuanian", "lt"},
     903             :     {"lithuanian", "Lithuanian"},
     904             :     {"nepali", "ne"},
     905             :     {"nepali", "Nepali"},
     906             :     {"norwegian", "no"},
     907             :     {"norwegian", "Norwegian"},
     908             :     {"portuguese", "pt"},
     909             :     {"portuguese", "Portuguese"},
     910             :     {"romanian", "ro"},
     911             :     {"russian", "ru"},
     912             :     {"russian", "Russian"},
     913             :     {"serbian", "sr"},
     914             :     {"serbian", "Serbian"},
     915             :     {"spanish", "es"},
     916             :     {"spanish", "Spanish"},
     917             :     {"swedish", "sv"},
     918             :     {"swedish", "Swedish"},
     919             :     {"tamil", "ta"},
     920             :     {"tamil", "Tamil"},
     921             :     {"turkish", "tr"},
     922             :     {"turkish", "Turkish"},
     923             :     {"yiddish", "yi"},
     924             :     {"yiddish", "Yiddish"},
     925             :     {NULL, NULL}                /* end marker */
     926             : };
     927             : 
     928             : /*
     929             :  * Look for a text search configuration matching lc_ctype, and return its
     930             :  * name; return NULL if no match.
     931             :  */
     932             : static const char *
     933          98 : find_matching_ts_config(const char *lc_type)
     934             : {
     935             :     int         i;
     936             :     char       *langname,
     937             :                *ptr;
     938             : 
     939             :     /*
     940             :      * Convert lc_ctype to a language name by stripping everything after an
     941             :      * underscore (usual case) or a hyphen (Windows "locale name"; see
     942             :      * comments at IsoLocaleName()).
     943             :      *
     944             :      * XXX Should ' ' be a stop character?  This would select "norwegian" for
     945             :      * the Windows locale "Norwegian (Nynorsk)_Norway.1252".  If we do so, we
     946             :      * should also accept the "nn" and "nb" Unix locales.
     947             :      *
     948             :      * Just for paranoia, we also stop at '.' or '@'.
     949             :      */
     950          98 :     if (lc_type == NULL)
     951           0 :         langname = pg_strdup("");
     952             :     else
     953             :     {
     954          98 :         ptr = langname = pg_strdup(lc_type);
     955         256 :         while (*ptr &&
     956         218 :                *ptr != '_' && *ptr != '-' && *ptr != '.' && *ptr != '@')
     957         158 :             ptr++;
     958          98 :         *ptr = '\0';
     959             :     }
     960             : 
     961        1394 :     for (i = 0; tsearch_config_languages[i].tsconfname; i++)
     962             :     {
     963        1394 :         if (pg_strcasecmp(tsearch_config_languages[i].langname, langname) == 0)
     964             :         {
     965          98 :             free(langname);
     966          98 :             return tsearch_config_languages[i].tsconfname;
     967             :         }
     968             :     }
     969             : 
     970           0 :     free(langname);
     971           0 :     return NULL;
     972             : }
     973             : 
     974             : 
     975             : /*
     976             :  * set name of given input file variable under data directory
     977             :  */
     978             : static void
     979        1080 : set_input(char **dest, const char *filename)
     980             : {
     981        1080 :     *dest = psprintf("%s/%s", share_path, filename);
     982        1080 : }
     983             : 
     984             : /*
     985             :  * check that given input file exists
     986             :  */
     987             : static void
     988        1080 : check_input(char *path)
     989             : {
     990             :     struct stat statbuf;
     991             : 
     992        1080 :     if (stat(path, &statbuf) != 0)
     993             :     {
     994           0 :         if (errno == ENOENT)
     995             :         {
     996           0 :             pg_log_error("file \"%s\" does not exist", path);
     997           0 :             pg_log_error_hint("This might mean you have a corrupted installation or identified the wrong directory with the invocation option -L.");
     998             :         }
     999             :         else
    1000             :         {
    1001           0 :             pg_log_error("could not access file \"%s\": %m", path);
    1002           0 :             pg_log_error_hint("This might mean you have a corrupted installation or identified the wrong directory with the invocation option -L.");
    1003             :         }
    1004           0 :         exit(1);
    1005             :     }
    1006        1080 :     if (!S_ISREG(statbuf.st_mode))
    1007             :     {
    1008           0 :         pg_log_error("file \"%s\" is not a regular file", path);
    1009           0 :         pg_log_error_hint("This might mean you have a corrupted installation or identified the wrong directory with the invocation option -L.");
    1010           0 :         exit(1);
    1011             :     }
    1012        1080 : }
    1013             : 
    1014             : /*
    1015             :  * write out the PG_VERSION file in the data dir, or its subdirectory
    1016             :  * if extrapath is not NULL
    1017             :  */
    1018             : static void
    1019         182 : write_version_file(const char *extrapath)
    1020             : {
    1021             :     FILE       *version_file;
    1022             :     char       *path;
    1023             : 
    1024         182 :     if (extrapath == NULL)
    1025          92 :         path = psprintf("%s/PG_VERSION", pg_data);
    1026             :     else
    1027          90 :         path = psprintf("%s/%s/PG_VERSION", pg_data, extrapath);
    1028             : 
    1029         182 :     if ((version_file = fopen(path, PG_BINARY_W)) == NULL)
    1030           0 :         pg_fatal("could not open file \"%s\" for writing: %m", path);
    1031         364 :     if (fprintf(version_file, "%s\n", PG_MAJORVERSION) < 0 ||
    1032         182 :         fclose(version_file))
    1033           0 :         pg_fatal("could not write file \"%s\": %m", path);
    1034         182 :     free(path);
    1035         182 : }
    1036             : 
    1037             : /*
    1038             :  * set up an empty config file so we can check config settings by launching
    1039             :  * a test backend
    1040             :  */
    1041             : static void
    1042          92 : set_null_conf(void)
    1043             : {
    1044             :     FILE       *conf_file;
    1045             :     char       *path;
    1046             : 
    1047          92 :     path = psprintf("%s/postgresql.conf", pg_data);
    1048          92 :     conf_file = fopen(path, PG_BINARY_W);
    1049          92 :     if (conf_file == NULL)
    1050           0 :         pg_fatal("could not open file \"%s\" for writing: %m", path);
    1051          92 :     if (fclose(conf_file))
    1052           0 :         pg_fatal("could not write file \"%s\": %m", path);
    1053          92 :     free(path);
    1054          92 : }
    1055             : 
    1056             : /*
    1057             :  * Determine which dynamic shared memory implementation should be used on
    1058             :  * this platform.  POSIX shared memory is preferable because the default
    1059             :  * allocation limits are much higher than the limits for System V on most
    1060             :  * systems that support both, but the fact that a platform has shm_open
    1061             :  * doesn't guarantee that that call will succeed when attempted.  So, we
    1062             :  * attempt to reproduce what the postmaster will do when allocating a POSIX
    1063             :  * segment in dsm_impl.c; if it doesn't work, we assume it won't work for
    1064             :  * the postmaster either, and configure the cluster for System V shared
    1065             :  * memory instead.
    1066             :  *
    1067             :  * We avoid choosing Solaris's implementation of shm_open() by default.  It
    1068             :  * can sleep and fail spuriously under contention.
    1069             :  */
    1070             : static const char *
    1071          92 : choose_dsm_implementation(void)
    1072             : {
    1073             : #if defined(HAVE_SHM_OPEN) && !defined(__sun__)
    1074          92 :     int         ntries = 10;
    1075             :     pg_prng_state prng_state;
    1076             : 
    1077             :     /* Initialize prng; this function is its only user in this program. */
    1078          92 :     pg_prng_seed(&prng_state, (uint64) (getpid() ^ time(NULL)));
    1079             : 
    1080          92 :     while (ntries > 0)
    1081             :     {
    1082             :         uint32      handle;
    1083             :         char        name[64];
    1084             :         int         fd;
    1085             : 
    1086          92 :         handle = pg_prng_uint32(&prng_state);
    1087          92 :         snprintf(name, 64, "/PostgreSQL.%u", handle);
    1088          92 :         if ((fd = shm_open(name, O_CREAT | O_RDWR | O_EXCL, 0600)) != -1)
    1089             :         {
    1090          92 :             close(fd);
    1091          92 :             shm_unlink(name);
    1092          92 :             return "posix";
    1093             :         }
    1094           0 :         if (errno != EEXIST)
    1095           0 :             break;
    1096           0 :         --ntries;
    1097             :     }
    1098             : #endif
    1099             : 
    1100             : #ifdef WIN32
    1101             :     return "windows";
    1102             : #else
    1103           0 :     return "sysv";
    1104             : #endif
    1105             : }
    1106             : 
    1107             : /*
    1108             :  * Determine platform-specific config settings
    1109             :  *
    1110             :  * Use reasonable values if kernel will let us, else scale back.
    1111             :  */
    1112             : static void
    1113          92 : test_config_settings(void)
    1114             : {
    1115             :     /*
    1116             :      * This macro defines the minimum shared_buffers we want for a given
    1117             :      * max_connections value. The arrays show the settings to try.
    1118             :      */
    1119             : #define MIN_BUFS_FOR_CONNS(nconns)  ((nconns) * 10)
    1120             : 
    1121             :     static const int trial_conns[] = {
    1122             :         100, 50, 40, 30, 20
    1123             :     };
    1124             :     static const int trial_bufs[] = {
    1125             :         16384, 8192, 4096, 3584, 3072, 2560, 2048, 1536,
    1126             :         1000, 900, 800, 700, 600, 500,
    1127             :         400, 300, 200, 100, 50
    1128             :     };
    1129             : 
    1130          92 :     const int   connslen = sizeof(trial_conns) / sizeof(int);
    1131          92 :     const int   bufslen = sizeof(trial_bufs) / sizeof(int);
    1132             :     int         i,
    1133             :                 test_conns,
    1134             :                 test_buffs,
    1135          92 :                 ok_buffers = 0;
    1136             : 
    1137             :     /*
    1138             :      * Need to determine working DSM implementation first so that subsequent
    1139             :      * tests don't fail because DSM setting doesn't work.
    1140             :      */
    1141          92 :     printf(_("selecting dynamic shared memory implementation ... "));
    1142          92 :     fflush(stdout);
    1143          92 :     dynamic_shared_memory_type = choose_dsm_implementation();
    1144          92 :     printf("%s\n", dynamic_shared_memory_type);
    1145             : 
    1146             :     /*
    1147             :      * Probe for max_connections before shared_buffers, since it is subject to
    1148             :      * more constraints than shared_buffers.
    1149             :      */
    1150          92 :     printf(_("selecting default \"max_connections\" ... "));
    1151          92 :     fflush(stdout);
    1152             : 
    1153         102 :     for (i = 0; i < connslen; i++)
    1154             :     {
    1155         100 :         test_conns = trial_conns[i];
    1156         100 :         test_buffs = MIN_BUFS_FOR_CONNS(test_conns);
    1157             : 
    1158         100 :         if (test_specific_config_settings(test_conns, test_buffs))
    1159             :         {
    1160          90 :             ok_buffers = test_buffs;
    1161          90 :             break;
    1162             :         }
    1163             :     }
    1164          92 :     if (i >= connslen)
    1165           2 :         i = connslen - 1;
    1166          92 :     n_connections = trial_conns[i];
    1167             : 
    1168          92 :     printf("%d\n", n_connections);
    1169             : 
    1170          92 :     printf(_("selecting default \"shared_buffers\" ... "));
    1171          92 :     fflush(stdout);
    1172             : 
    1173         130 :     for (i = 0; i < bufslen; i++)
    1174             :     {
    1175             :         /* Use same amount of memory, independent of BLCKSZ */
    1176         128 :         test_buffs = (trial_bufs[i] * 8192) / BLCKSZ;
    1177         128 :         if (test_buffs <= ok_buffers)
    1178             :         {
    1179           0 :             test_buffs = ok_buffers;
    1180           0 :             break;
    1181             :         }
    1182             : 
    1183         128 :         if (test_specific_config_settings(n_connections, test_buffs))
    1184          90 :             break;
    1185             :     }
    1186          92 :     n_buffers = test_buffs;
    1187             : 
    1188          92 :     if ((n_buffers * (BLCKSZ / 1024)) % 1024 == 0)
    1189          90 :         printf("%dMB\n", (n_buffers * (BLCKSZ / 1024)) / 1024);
    1190             :     else
    1191           2 :         printf("%dkB\n", n_buffers * (BLCKSZ / 1024));
    1192             : 
    1193          92 :     printf(_("selecting default time zone ... "));
    1194          92 :     fflush(stdout);
    1195          92 :     default_timezone = select_default_timezone(share_path);
    1196          92 :     printf("%s\n", default_timezone ? default_timezone : "GMT");
    1197          92 : }
    1198             : 
    1199             : /*
    1200             :  * Test a specific combination of configuration settings.
    1201             :  */
    1202             : static bool
    1203         228 : test_specific_config_settings(int test_conns, int test_buffs)
    1204             : {
    1205             :     PQExpBufferData cmd;
    1206             :     _stringlist *gnames,
    1207             :                *gvalues;
    1208             :     int         status;
    1209             : 
    1210         228 :     initPQExpBuffer(&cmd);
    1211             : 
    1212             :     /* Set up the test postmaster invocation */
    1213         228 :     printfPQExpBuffer(&cmd,
    1214             :                       "\"%s\" --check %s %s "
    1215             :                       "-c max_connections=%d "
    1216             :                       "-c shared_buffers=%d "
    1217             :                       "-c dynamic_shared_memory_type=%s",
    1218             :                       backend_exec, boot_options, extra_options,
    1219             :                       test_conns, test_buffs,
    1220             :                       dynamic_shared_memory_type);
    1221             : 
    1222             :     /* Add any user-given setting overrides */
    1223         292 :     for (gnames = extra_guc_names, gvalues = extra_guc_values;
    1224             :          gnames != NULL;        /* assume lists have the same length */
    1225          64 :          gnames = gnames->next, gvalues = gvalues->next)
    1226             :     {
    1227          64 :         appendPQExpBuffer(&cmd, " -c %s=", gnames->str);
    1228          64 :         appendShellString(&cmd, gvalues->str);
    1229             :     }
    1230             : 
    1231         228 :     appendPQExpBuffer(&cmd,
    1232             :                       " < \"%s\" > \"%s\" 2>&1",
    1233             :                       DEVNULL, DEVNULL);
    1234             : 
    1235         228 :     fflush(NULL);
    1236         228 :     status = system(cmd.data);
    1237             : 
    1238         228 :     termPQExpBuffer(&cmd);
    1239             : 
    1240         228 :     return (status == 0);
    1241             : }
    1242             : 
    1243             : /*
    1244             :  * Calculate the default wal_size with a "pretty" unit.
    1245             :  */
    1246             : static char *
    1247         184 : pretty_wal_size(int segment_count)
    1248             : {
    1249         184 :     int         sz = wal_segment_size_mb * segment_count;
    1250         184 :     char       *result = pg_malloc(14);
    1251             : 
    1252         184 :     if ((sz % 1024) == 0)
    1253          82 :         snprintf(result, 14, "%dGB", sz / 1024);
    1254             :     else
    1255         102 :         snprintf(result, 14, "%dMB", sz);
    1256             : 
    1257         184 :     return result;
    1258             : }
    1259             : 
    1260             : /*
    1261             :  * set up all the config files
    1262             :  */
    1263             : static void
    1264          92 : setup_config(void)
    1265             : {
    1266             :     char      **conflines;
    1267             :     char        repltok[MAXPGPATH];
    1268             :     char        path[MAXPGPATH];
    1269             :     _stringlist *gnames,
    1270             :                *gvalues;
    1271             : 
    1272          92 :     fputs(_("creating configuration files ... "), stdout);
    1273          92 :     fflush(stdout);
    1274             : 
    1275             :     /* postgresql.conf */
    1276             : 
    1277          92 :     conflines = readfile(conf_file);
    1278             : 
    1279          92 :     snprintf(repltok, sizeof(repltok), "%d", n_connections);
    1280          92 :     conflines = replace_guc_value(conflines, "max_connections",
    1281             :                                   repltok, false);
    1282             : 
    1283          92 :     if ((n_buffers * (BLCKSZ / 1024)) % 1024 == 0)
    1284          90 :         snprintf(repltok, sizeof(repltok), "%dMB",
    1285          90 :                  (n_buffers * (BLCKSZ / 1024)) / 1024);
    1286             :     else
    1287           2 :         snprintf(repltok, sizeof(repltok), "%dkB",
    1288             :                  n_buffers * (BLCKSZ / 1024));
    1289          92 :     conflines = replace_guc_value(conflines, "shared_buffers",
    1290             :                                   repltok, false);
    1291             : 
    1292          92 :     conflines = replace_guc_value(conflines, "lc_messages",
    1293             :                                   lc_messages, false);
    1294             : 
    1295          92 :     conflines = replace_guc_value(conflines, "lc_monetary",
    1296             :                                   lc_monetary, false);
    1297             : 
    1298          92 :     conflines = replace_guc_value(conflines, "lc_numeric",
    1299             :                                   lc_numeric, false);
    1300             : 
    1301          92 :     conflines = replace_guc_value(conflines, "lc_time",
    1302             :                                   lc_time, false);
    1303             : 
    1304          92 :     switch (locale_date_order(lc_time))
    1305             :     {
    1306           0 :         case DATEORDER_YMD:
    1307           0 :             strcpy(repltok, "iso, ymd");
    1308           0 :             break;
    1309           0 :         case DATEORDER_DMY:
    1310           0 :             strcpy(repltok, "iso, dmy");
    1311           0 :             break;
    1312          92 :         case DATEORDER_MDY:
    1313             :         default:
    1314          92 :             strcpy(repltok, "iso, mdy");
    1315          92 :             break;
    1316             :     }
    1317          92 :     conflines = replace_guc_value(conflines, "datestyle",
    1318             :                                   repltok, false);
    1319             : 
    1320          92 :     snprintf(repltok, sizeof(repltok), "pg_catalog.%s",
    1321             :              default_text_search_config);
    1322          92 :     conflines = replace_guc_value(conflines, "default_text_search_config",
    1323             :                                   repltok, false);
    1324             : 
    1325          92 :     if (default_timezone)
    1326             :     {
    1327          92 :         conflines = replace_guc_value(conflines, "timezone",
    1328             :                                       default_timezone, false);
    1329          92 :         conflines = replace_guc_value(conflines, "log_timezone",
    1330             :                                       default_timezone, false);
    1331             :     }
    1332             : 
    1333          92 :     conflines = replace_guc_value(conflines, "dynamic_shared_memory_type",
    1334             :                                   dynamic_shared_memory_type, false);
    1335             : 
    1336             :     /* Caution: these depend on wal_segment_size_mb, they're not constants */
    1337          92 :     conflines = replace_guc_value(conflines, "min_wal_size",
    1338          92 :                                   pretty_wal_size(DEFAULT_MIN_WAL_SEGS), false);
    1339             : 
    1340          92 :     conflines = replace_guc_value(conflines, "max_wal_size",
    1341          92 :                                   pretty_wal_size(DEFAULT_MAX_WAL_SEGS), false);
    1342             : 
    1343             :     /*
    1344             :      * Fix up various entries to match the true compile-time defaults.  Since
    1345             :      * these are indeed defaults, keep the postgresql.conf lines commented.
    1346             :      */
    1347          92 :     conflines = replace_guc_value(conflines, "unix_socket_directories",
    1348             :                                   DEFAULT_PGSOCKET_DIR, true);
    1349             : 
    1350          92 :     conflines = replace_guc_value(conflines, "port",
    1351             :                                   DEF_PGPORT_STR, true);
    1352             : 
    1353             : #if DEFAULT_BACKEND_FLUSH_AFTER > 0
    1354             :     snprintf(repltok, sizeof(repltok), "%dkB",
    1355             :              DEFAULT_BACKEND_FLUSH_AFTER * (BLCKSZ / 1024));
    1356             :     conflines = replace_guc_value(conflines, "backend_flush_after",
    1357             :                                   repltok, true);
    1358             : #endif
    1359             : 
    1360             : #if DEFAULT_BGWRITER_FLUSH_AFTER > 0
    1361          92 :     snprintf(repltok, sizeof(repltok), "%dkB",
    1362             :              DEFAULT_BGWRITER_FLUSH_AFTER * (BLCKSZ / 1024));
    1363          92 :     conflines = replace_guc_value(conflines, "bgwriter_flush_after",
    1364             :                                   repltok, true);
    1365             : #endif
    1366             : 
    1367             : #if DEFAULT_CHECKPOINT_FLUSH_AFTER > 0
    1368          92 :     snprintf(repltok, sizeof(repltok), "%dkB",
    1369             :              DEFAULT_CHECKPOINT_FLUSH_AFTER * (BLCKSZ / 1024));
    1370          92 :     conflines = replace_guc_value(conflines, "checkpoint_flush_after",
    1371             :                                   repltok, true);
    1372             : #endif
    1373             : 
    1374             : #ifndef USE_PREFETCH
    1375             :     conflines = replace_guc_value(conflines, "effective_io_concurrency",
    1376             :                                   "0", true);
    1377             : #endif
    1378             : 
    1379             : #ifdef WIN32
    1380             :     conflines = replace_guc_value(conflines, "update_process_title",
    1381             :                                   "off", true);
    1382             : #endif
    1383             : 
    1384             :     /*
    1385             :      * Change password_encryption setting to md5 if md5 was chosen as an
    1386             :      * authentication method, unless scram-sha-256 was also chosen.
    1387             :      */
    1388          92 :     if ((strcmp(authmethodlocal, "md5") == 0 &&
    1389           0 :          strcmp(authmethodhost, "scram-sha-256") != 0) ||
    1390          92 :         (strcmp(authmethodhost, "md5") == 0 &&
    1391           0 :          strcmp(authmethodlocal, "scram-sha-256") != 0))
    1392             :     {
    1393           0 :         conflines = replace_guc_value(conflines, "password_encryption",
    1394             :                                       "md5", false);
    1395             :     }
    1396             : 
    1397             :     /*
    1398             :      * If group access has been enabled for the cluster then it makes sense to
    1399             :      * ensure that the log files also allow group access.  Otherwise a backup
    1400             :      * from a user in the group would fail if the log files were not
    1401             :      * relocated.
    1402             :      */
    1403          92 :     if (pg_dir_create_mode == PG_DIR_MODE_GROUP)
    1404             :     {
    1405          10 :         conflines = replace_guc_value(conflines, "log_file_mode",
    1406             :                                       "0640", false);
    1407             :     }
    1408             : 
    1409             :     /*
    1410             :      * Now replace anything that's overridden via -c switches.
    1411             :      */
    1412         102 :     for (gnames = extra_guc_names, gvalues = extra_guc_values;
    1413             :          gnames != NULL;        /* assume lists have the same length */
    1414          10 :          gnames = gnames->next, gvalues = gvalues->next)
    1415             :     {
    1416          10 :         conflines = replace_guc_value(conflines, gnames->str,
    1417          10 :                                       gvalues->str, false);
    1418             :     }
    1419             : 
    1420             :     /* ... and write out the finished postgresql.conf file */
    1421          92 :     snprintf(path, sizeof(path), "%s/postgresql.conf", pg_data);
    1422             : 
    1423          92 :     writefile(path, conflines);
    1424          92 :     if (chmod(path, pg_file_create_mode) != 0)
    1425           0 :         pg_fatal("could not change permissions of \"%s\": %m", path);
    1426             : 
    1427             : 
    1428             :     /* postgresql.auto.conf */
    1429             : 
    1430          92 :     conflines = pg_malloc_array(char *, 3);
    1431          92 :     conflines[0] = pg_strdup("# Do not edit this file manually!\n");
    1432          92 :     conflines[1] = pg_strdup("# It will be overwritten by the ALTER SYSTEM command.\n");
    1433          92 :     conflines[2] = NULL;
    1434             : 
    1435          92 :     sprintf(path, "%s/postgresql.auto.conf", pg_data);
    1436             : 
    1437          92 :     writefile(path, conflines);
    1438          92 :     if (chmod(path, pg_file_create_mode) != 0)
    1439           0 :         pg_fatal("could not change permissions of \"%s\": %m", path);
    1440             : 
    1441             : 
    1442             :     /* pg_hba.conf */
    1443             : 
    1444          92 :     conflines = readfile(hba_file);
    1445             : 
    1446          92 :     conflines = replace_token(conflines, "@remove-line-for-nolocal@", "");
    1447             : 
    1448             : 
    1449             :     /*
    1450             :      * Probe to see if there is really any platform support for IPv6, and
    1451             :      * comment out the relevant pg_hba line if not.  This avoids runtime
    1452             :      * warnings if getaddrinfo doesn't actually cope with IPv6.  Particularly
    1453             :      * useful on Windows, where executables built on a machine with IPv6 may
    1454             :      * have to run on a machine without.
    1455             :      */
    1456             :     {
    1457             :         struct addrinfo *gai_result;
    1458             :         struct addrinfo hints;
    1459          92 :         int         err = 0;
    1460             : 
    1461             : #ifdef WIN32
    1462             :         /* need to call WSAStartup before calling getaddrinfo */
    1463             :         WSADATA     wsaData;
    1464             : 
    1465             :         err = WSAStartup(MAKEWORD(2, 2), &wsaData);
    1466             : #endif
    1467             : 
    1468             :         /* for best results, this code should match parse_hba_line() */
    1469          92 :         hints.ai_flags = AI_NUMERICHOST;
    1470          92 :         hints.ai_family = AF_UNSPEC;
    1471          92 :         hints.ai_socktype = 0;
    1472          92 :         hints.ai_protocol = 0;
    1473          92 :         hints.ai_addrlen = 0;
    1474          92 :         hints.ai_canonname = NULL;
    1475          92 :         hints.ai_addr = NULL;
    1476          92 :         hints.ai_next = NULL;
    1477             : 
    1478         184 :         if (err != 0 ||
    1479          92 :             getaddrinfo("::1", NULL, &hints, &gai_result) != 0)
    1480             :         {
    1481           0 :             conflines = replace_token(conflines,
    1482             :                                       "host    all             all             ::1",
    1483             :                                       "#host    all             all             ::1");
    1484           0 :             conflines = replace_token(conflines,
    1485             :                                       "host    replication     all             ::1",
    1486             :                                       "#host    replication     all             ::1");
    1487             :         }
    1488             :     }
    1489             : 
    1490             :     /* Replace default authentication methods */
    1491          92 :     conflines = replace_token(conflines,
    1492             :                               "@authmethodhost@",
    1493             :                               authmethodhost);
    1494          92 :     conflines = replace_token(conflines,
    1495             :                               "@authmethodlocal@",
    1496             :                               authmethodlocal);
    1497             : 
    1498          92 :     conflines = replace_token(conflines,
    1499             :                               "@authcomment@",
    1500          92 :                               (strcmp(authmethodlocal, "trust") == 0 || strcmp(authmethodhost, "trust") == 0) ? AUTHTRUST_WARNING : "");
    1501             : 
    1502          92 :     snprintf(path, sizeof(path), "%s/pg_hba.conf", pg_data);
    1503             : 
    1504          92 :     writefile(path, conflines);
    1505          92 :     if (chmod(path, pg_file_create_mode) != 0)
    1506           0 :         pg_fatal("could not change permissions of \"%s\": %m", path);
    1507             : 
    1508             : 
    1509             :     /* pg_ident.conf */
    1510             : 
    1511          92 :     conflines = readfile(ident_file);
    1512             : 
    1513          92 :     snprintf(path, sizeof(path), "%s/pg_ident.conf", pg_data);
    1514             : 
    1515          92 :     writefile(path, conflines);
    1516          92 :     if (chmod(path, pg_file_create_mode) != 0)
    1517           0 :         pg_fatal("could not change permissions of \"%s\": %m", path);
    1518             : 
    1519          92 :     check_ok();
    1520          92 : }
    1521             : 
    1522             : 
    1523             : /*
    1524             :  * run the BKI script in bootstrap mode to create template1
    1525             :  */
    1526             : static void
    1527          92 : bootstrap_template1(void)
    1528             : {
    1529             :     PG_CMD_DECL;
    1530             :     PQExpBufferData cmd;
    1531             :     char      **line;
    1532             :     char      **bki_lines;
    1533             :     char        headerline[MAXPGPATH];
    1534             :     char        buf[64];
    1535             : 
    1536          92 :     printf(_("running bootstrap script ... "));
    1537          92 :     fflush(stdout);
    1538             : 
    1539          92 :     bki_lines = readfile(bki_file);
    1540             : 
    1541             :     /* Check that bki file appears to be of the right version */
    1542             : 
    1543          92 :     snprintf(headerline, sizeof(headerline), "# PostgreSQL %s\n",
    1544             :              PG_MAJORVERSION);
    1545             : 
    1546          92 :     if (strcmp(headerline, *bki_lines) != 0)
    1547             :     {
    1548           0 :         pg_log_error("input file \"%s\" does not belong to PostgreSQL %s",
    1549             :                      bki_file, PG_VERSION);
    1550           0 :         pg_log_error_hint("Specify the correct path using the option -L.");
    1551           0 :         exit(1);
    1552             :     }
    1553             : 
    1554             :     /* Substitute for various symbols used in the BKI file */
    1555             : 
    1556          92 :     sprintf(buf, "%d", NAMEDATALEN);
    1557          92 :     bki_lines = replace_token(bki_lines, "NAMEDATALEN", buf);
    1558             : 
    1559          92 :     sprintf(buf, "%d", (int) sizeof(Pointer));
    1560          92 :     bki_lines = replace_token(bki_lines, "SIZEOF_POINTER", buf);
    1561             : 
    1562          92 :     bki_lines = replace_token(bki_lines, "ALIGNOF_POINTER",
    1563             :                               (sizeof(Pointer) == 4) ? "i" : "d");
    1564             : 
    1565          92 :     bki_lines = replace_token(bki_lines, "FLOAT8PASSBYVAL",
    1566             :                               FLOAT8PASSBYVAL ? "true" : "false");
    1567             : 
    1568          92 :     bki_lines = replace_token(bki_lines, "POSTGRES",
    1569          92 :                               escape_quotes_bki(username));
    1570             : 
    1571          92 :     bki_lines = replace_token(bki_lines, "ENCODING",
    1572          92 :                               encodingid_to_string(encodingid));
    1573             : 
    1574          92 :     bki_lines = replace_token(bki_lines, "LC_COLLATE",
    1575          92 :                               escape_quotes_bki(lc_collate));
    1576             : 
    1577          92 :     bki_lines = replace_token(bki_lines, "LC_CTYPE",
    1578          92 :                               escape_quotes_bki(lc_ctype));
    1579             : 
    1580          92 :     bki_lines = replace_token(bki_lines, "DATLOCALE",
    1581          92 :                               datlocale ? escape_quotes_bki(datlocale) : "_null_");
    1582             : 
    1583          92 :     bki_lines = replace_token(bki_lines, "ICU_RULES",
    1584          92 :                               icu_rules ? escape_quotes_bki(icu_rules) : "_null_");
    1585             : 
    1586          92 :     sprintf(buf, "%c", locale_provider);
    1587          92 :     bki_lines = replace_token(bki_lines, "LOCALE_PROVIDER", buf);
    1588             : 
    1589             :     /* Also ensure backend isn't confused by this environment var: */
    1590          92 :     unsetenv("PGCLIENTENCODING");
    1591             : 
    1592          92 :     initPQExpBuffer(&cmd);
    1593             : 
    1594          92 :     printfPQExpBuffer(&cmd, "\"%s\" --boot %s %s", backend_exec, boot_options, extra_options);
    1595          92 :     appendPQExpBuffer(&cmd, " -X %d", wal_segment_size_mb * (1024 * 1024));
    1596          92 :     if (data_checksums)
    1597          82 :         appendPQExpBuffer(&cmd, " -k");
    1598          92 :     if (debug)
    1599           0 :         appendPQExpBuffer(&cmd, " -d 5");
    1600             : 
    1601             : 
    1602          92 :     PG_CMD_OPEN(cmd.data);
    1603             : 
    1604     1082564 :     for (line = bki_lines; *line != NULL; line++)
    1605             :     {
    1606     1082472 :         PG_CMD_PUTS(*line);
    1607     1082472 :         free(*line);
    1608             :     }
    1609             : 
    1610          92 :     PG_CMD_CLOSE();
    1611             : 
    1612          90 :     termPQExpBuffer(&cmd);
    1613          90 :     free(bki_lines);
    1614             : 
    1615          90 :     check_ok();
    1616          90 : }
    1617             : 
    1618             : /*
    1619             :  * set up the shadow password table
    1620             :  */
    1621             : static void
    1622          90 : setup_auth(FILE *cmdfd)
    1623             : {
    1624             :     /*
    1625             :      * The authid table shouldn't be readable except through views, to ensure
    1626             :      * passwords are not publicly visible.
    1627             :      */
    1628          90 :     PG_CMD_PUTS("REVOKE ALL ON pg_authid FROM public;\n\n");
    1629             : 
    1630          90 :     if (superuser_password)
    1631           0 :         PG_CMD_PRINTF("ALTER USER \"%s\" WITH PASSWORD E'%s';\n\n",
    1632             :                       username, escape_quotes(superuser_password));
    1633          90 : }
    1634             : 
    1635             : /*
    1636             :  * get the superuser password if required
    1637             :  */
    1638             : static void
    1639           0 : get_su_pwd(void)
    1640             : {
    1641             :     char       *pwd1;
    1642             : 
    1643           0 :     if (pwprompt)
    1644             :     {
    1645             :         /*
    1646             :          * Read password from terminal
    1647             :          */
    1648             :         char       *pwd2;
    1649             : 
    1650           0 :         printf("\n");
    1651           0 :         fflush(stdout);
    1652           0 :         pwd1 = simple_prompt("Enter new superuser password: ", false);
    1653           0 :         pwd2 = simple_prompt("Enter it again: ", false);
    1654           0 :         if (strcmp(pwd1, pwd2) != 0)
    1655             :         {
    1656           0 :             fprintf(stderr, _("Passwords didn't match.\n"));
    1657           0 :             exit(1);
    1658             :         }
    1659           0 :         free(pwd2);
    1660             :     }
    1661             :     else
    1662             :     {
    1663             :         /*
    1664             :          * Read password from file
    1665             :          *
    1666             :          * Ideally this should insist that the file not be world-readable.
    1667             :          * However, this option is mainly intended for use on Windows where
    1668             :          * file permissions may not exist at all, so we'll skip the paranoia
    1669             :          * for now.
    1670             :          */
    1671           0 :         FILE       *pwf = fopen(pwfilename, "r");
    1672             : 
    1673           0 :         if (!pwf)
    1674           0 :             pg_fatal("could not open file \"%s\" for reading: %m",
    1675             :                      pwfilename);
    1676           0 :         pwd1 = pg_get_line(pwf, NULL);
    1677           0 :         if (!pwd1)
    1678             :         {
    1679           0 :             if (ferror(pwf))
    1680           0 :                 pg_fatal("could not read password from file \"%s\": %m",
    1681             :                          pwfilename);
    1682             :             else
    1683           0 :                 pg_fatal("password file \"%s\" is empty",
    1684             :                          pwfilename);
    1685             :         }
    1686           0 :         fclose(pwf);
    1687             : 
    1688           0 :         (void) pg_strip_crlf(pwd1);
    1689             :     }
    1690             : 
    1691           0 :     superuser_password = pwd1;
    1692           0 : }
    1693             : 
    1694             : /*
    1695             :  * set up pg_depend
    1696             :  */
    1697             : static void
    1698          90 : setup_depend(FILE *cmdfd)
    1699             : {
    1700             :     /*
    1701             :      * Advance the OID counter so that subsequently-created objects aren't
    1702             :      * pinned.
    1703             :      */
    1704          90 :     PG_CMD_PUTS("SELECT pg_stop_making_pinned_objects();\n\n");
    1705          90 : }
    1706             : 
    1707             : /*
    1708             :  * Run external file
    1709             :  */
    1710             : static void
    1711         450 : setup_run_file(FILE *cmdfd, const char *filename)
    1712             : {
    1713             :     char      **lines;
    1714             : 
    1715         450 :     lines = readfile(filename);
    1716             : 
    1717      598680 :     for (char **line = lines; *line != NULL; line++)
    1718             :     {
    1719      598230 :         PG_CMD_PUTS(*line);
    1720      598230 :         free(*line);
    1721             :     }
    1722             : 
    1723         450 :     PG_CMD_PUTS("\n\n");
    1724             : 
    1725         450 :     free(lines);
    1726         450 : }
    1727             : 
    1728             : /*
    1729             :  * fill in extra description data
    1730             :  */
    1731             : static void
    1732          90 : setup_description(FILE *cmdfd)
    1733             : {
    1734             :     /* Create default descriptions for operator implementation functions */
    1735          90 :     PG_CMD_PUTS("WITH funcdescs AS ( "
    1736             :                 "SELECT p.oid as p_oid, o.oid as o_oid, oprname "
    1737             :                 "FROM pg_proc p JOIN pg_operator o ON oprcode = p.oid ) "
    1738             :                 "INSERT INTO pg_description "
    1739             :                 "  SELECT p_oid, 'pg_proc'::regclass, 0, "
    1740             :                 "    'implementation of ' || oprname || ' operator' "
    1741             :                 "  FROM funcdescs "
    1742             :                 "  WHERE NOT EXISTS (SELECT 1 FROM pg_description "
    1743             :                 "   WHERE objoid = p_oid AND classoid = 'pg_proc'::regclass) "
    1744             :                 "  AND NOT EXISTS (SELECT 1 FROM pg_description "
    1745             :                 "   WHERE objoid = o_oid AND classoid = 'pg_operator'::regclass"
    1746             :                 "         AND description LIKE 'deprecated%');\n\n");
    1747          90 : }
    1748             : 
    1749             : /*
    1750             :  * populate pg_collation
    1751             :  */
    1752             : static void
    1753          90 : setup_collation(FILE *cmdfd)
    1754             : {
    1755             :     /*
    1756             :      * Set the collation version for collations defined in pg_collation.dat,
    1757             :      * but not the ones where we know that the collation behavior will never
    1758             :      * change.
    1759             :      */
    1760          90 :     PG_CMD_PUTS("UPDATE pg_collation SET collversion = pg_collation_actual_version(oid) WHERE collname = 'unicode';\n\n");
    1761             : 
    1762             :     /* Import all collations we can find in the operating system */
    1763          90 :     PG_CMD_PUTS("SELECT pg_import_system_collations('pg_catalog');\n\n");
    1764          90 : }
    1765             : 
    1766             : /*
    1767             :  * Set up privileges
    1768             :  *
    1769             :  * We mark most system catalogs as world-readable.  We don't currently have
    1770             :  * to touch functions, languages, or databases, because their default
    1771             :  * permissions are OK.
    1772             :  *
    1773             :  * Some objects may require different permissions by default, so we
    1774             :  * make sure we don't overwrite privilege sets that have already been
    1775             :  * set (NOT NULL).
    1776             :  *
    1777             :  * Also populate pg_init_privs to save what the privileges are at init
    1778             :  * time.  This is used by pg_dump to allow users to change privileges
    1779             :  * on catalog objects and to have those privilege changes preserved
    1780             :  * across dump/reload and pg_upgrade.
    1781             :  *
    1782             :  * Note that pg_init_privs is only for per-database objects and therefore
    1783             :  * we don't include databases or tablespaces.
    1784             :  */
    1785             : static void
    1786          90 : setup_privileges(FILE *cmdfd)
    1787             : {
    1788          90 :     PG_CMD_PRINTF("UPDATE pg_class "
    1789             :                   "  SET relacl = (SELECT array_agg(a.acl) FROM "
    1790             :                   " (SELECT E'=r/\"%s\"' as acl "
    1791             :                   "  UNION SELECT unnest(pg_catalog.acldefault("
    1792             :                   "    CASE WHEN relkind = " CppAsString2(RELKIND_SEQUENCE) " THEN 's' "
    1793             :                   "         ELSE 'r' END::\"char\"," CppAsString2(BOOTSTRAP_SUPERUSERID) "::oid))"
    1794             :                   " ) as a) "
    1795             :                   "  WHERE relkind IN (" CppAsString2(RELKIND_RELATION) ", "
    1796             :                   CppAsString2(RELKIND_VIEW) ", " CppAsString2(RELKIND_MATVIEW) ", "
    1797             :                   CppAsString2(RELKIND_SEQUENCE) ")"
    1798             :                   "  AND relacl IS NULL;\n\n",
    1799             :                   escape_quotes(username));
    1800          90 :     PG_CMD_PUTS("GRANT USAGE ON SCHEMA pg_catalog, public TO PUBLIC;\n\n");
    1801          90 :     PG_CMD_PUTS("REVOKE ALL ON pg_largeobject FROM PUBLIC;\n\n");
    1802          90 :     PG_CMD_PUTS("INSERT INTO pg_init_privs "
    1803             :                 "  (objoid, classoid, objsubid, initprivs, privtype)"
    1804             :                 "    SELECT"
    1805             :                 "        oid,"
    1806             :                 "        (SELECT oid FROM pg_class WHERE relname = 'pg_class'),"
    1807             :                 "        0,"
    1808             :                 "        relacl,"
    1809             :                 "        'i'"
    1810             :                 "    FROM"
    1811             :                 "        pg_class"
    1812             :                 "    WHERE"
    1813             :                 "        relacl IS NOT NULL"
    1814             :                 "        AND relkind IN (" CppAsString2(RELKIND_RELATION) ", "
    1815             :                 CppAsString2(RELKIND_VIEW) ", " CppAsString2(RELKIND_MATVIEW) ", "
    1816             :                 CppAsString2(RELKIND_SEQUENCE) ");\n\n");
    1817          90 :     PG_CMD_PUTS("INSERT INTO pg_init_privs "
    1818             :                 "  (objoid, classoid, objsubid, initprivs, privtype)"
    1819             :                 "    SELECT"
    1820             :                 "        pg_class.oid,"
    1821             :                 "        (SELECT oid FROM pg_class WHERE relname = 'pg_class'),"
    1822             :                 "        pg_attribute.attnum,"
    1823             :                 "        pg_attribute.attacl,"
    1824             :                 "        'i'"
    1825             :                 "    FROM"
    1826             :                 "        pg_class"
    1827             :                 "        JOIN pg_attribute ON (pg_class.oid = pg_attribute.attrelid)"
    1828             :                 "    WHERE"
    1829             :                 "        pg_attribute.attacl IS NOT NULL"
    1830             :                 "        AND pg_class.relkind IN (" CppAsString2(RELKIND_RELATION) ", "
    1831             :                 CppAsString2(RELKIND_VIEW) ", " CppAsString2(RELKIND_MATVIEW) ", "
    1832             :                 CppAsString2(RELKIND_SEQUENCE) ");\n\n");
    1833          90 :     PG_CMD_PUTS("INSERT INTO pg_init_privs "
    1834             :                 "  (objoid, classoid, objsubid, initprivs, privtype)"
    1835             :                 "    SELECT"
    1836             :                 "        oid,"
    1837             :                 "        (SELECT oid FROM pg_class WHERE relname = 'pg_proc'),"
    1838             :                 "        0,"
    1839             :                 "        proacl,"
    1840             :                 "        'i'"
    1841             :                 "    FROM"
    1842             :                 "        pg_proc"
    1843             :                 "    WHERE"
    1844             :                 "        proacl IS NOT NULL;\n\n");
    1845          90 :     PG_CMD_PUTS("INSERT INTO pg_init_privs "
    1846             :                 "  (objoid, classoid, objsubid, initprivs, privtype)"
    1847             :                 "    SELECT"
    1848             :                 "        oid,"
    1849             :                 "        (SELECT oid FROM pg_class WHERE relname = 'pg_type'),"
    1850             :                 "        0,"
    1851             :                 "        typacl,"
    1852             :                 "        'i'"
    1853             :                 "    FROM"
    1854             :                 "        pg_type"
    1855             :                 "    WHERE"
    1856             :                 "        typacl IS NOT NULL;\n\n");
    1857          90 :     PG_CMD_PUTS("INSERT INTO pg_init_privs "
    1858             :                 "  (objoid, classoid, objsubid, initprivs, privtype)"
    1859             :                 "    SELECT"
    1860             :                 "        oid,"
    1861             :                 "        (SELECT oid FROM pg_class WHERE relname = 'pg_language'),"
    1862             :                 "        0,"
    1863             :                 "        lanacl,"
    1864             :                 "        'i'"
    1865             :                 "    FROM"
    1866             :                 "        pg_language"
    1867             :                 "    WHERE"
    1868             :                 "        lanacl IS NOT NULL;\n\n");
    1869          90 :     PG_CMD_PUTS("INSERT INTO pg_init_privs "
    1870             :                 "  (objoid, classoid, objsubid, initprivs, privtype)"
    1871             :                 "    SELECT"
    1872             :                 "        oid,"
    1873             :                 "        (SELECT oid FROM pg_class WHERE "
    1874             :                 "         relname = 'pg_largeobject_metadata'),"
    1875             :                 "        0,"
    1876             :                 "        lomacl,"
    1877             :                 "        'i'"
    1878             :                 "    FROM"
    1879             :                 "        pg_largeobject_metadata"
    1880             :                 "    WHERE"
    1881             :                 "        lomacl IS NOT NULL;\n\n");
    1882          90 :     PG_CMD_PUTS("INSERT INTO pg_init_privs "
    1883             :                 "  (objoid, classoid, objsubid, initprivs, privtype)"
    1884             :                 "    SELECT"
    1885             :                 "        oid,"
    1886             :                 "        (SELECT oid FROM pg_class WHERE relname = 'pg_namespace'),"
    1887             :                 "        0,"
    1888             :                 "        nspacl,"
    1889             :                 "        'i'"
    1890             :                 "    FROM"
    1891             :                 "        pg_namespace"
    1892             :                 "    WHERE"
    1893             :                 "        nspacl IS NOT NULL;\n\n");
    1894          90 :     PG_CMD_PUTS("INSERT INTO pg_init_privs "
    1895             :                 "  (objoid, classoid, objsubid, initprivs, privtype)"
    1896             :                 "    SELECT"
    1897             :                 "        oid,"
    1898             :                 "        (SELECT oid FROM pg_class WHERE "
    1899             :                 "         relname = 'pg_foreign_data_wrapper'),"
    1900             :                 "        0,"
    1901             :                 "        fdwacl,"
    1902             :                 "        'i'"
    1903             :                 "    FROM"
    1904             :                 "        pg_foreign_data_wrapper"
    1905             :                 "    WHERE"
    1906             :                 "        fdwacl IS NOT NULL;\n\n");
    1907          90 :     PG_CMD_PUTS("INSERT INTO pg_init_privs "
    1908             :                 "  (objoid, classoid, objsubid, initprivs, privtype)"
    1909             :                 "    SELECT"
    1910             :                 "        oid,"
    1911             :                 "        (SELECT oid FROM pg_class "
    1912             :                 "         WHERE relname = 'pg_foreign_server'),"
    1913             :                 "        0,"
    1914             :                 "        srvacl,"
    1915             :                 "        'i'"
    1916             :                 "    FROM"
    1917             :                 "        pg_foreign_server"
    1918             :                 "    WHERE"
    1919             :                 "        srvacl IS NOT NULL;\n\n");
    1920          90 : }
    1921             : 
    1922             : /*
    1923             :  * extract the strange version of version required for information schema
    1924             :  * (09.08.0007abc)
    1925             :  */
    1926             : static void
    1927         108 : set_info_version(void)
    1928             : {
    1929             :     char       *letterversion;
    1930         108 :     long        major = 0,
    1931         108 :                 minor = 0,
    1932         108 :                 micro = 0;
    1933             :     char       *endptr;
    1934         108 :     char       *vstr = pg_strdup(PG_VERSION);
    1935             :     char       *ptr;
    1936             : 
    1937         108 :     ptr = vstr + (strlen(vstr) - 1);
    1938         648 :     while (ptr != vstr && (*ptr < '0' || *ptr > '9'))
    1939         540 :         ptr--;
    1940         108 :     letterversion = ptr + 1;
    1941         108 :     major = strtol(vstr, &endptr, 10);
    1942         108 :     if (*endptr)
    1943         108 :         minor = strtol(endptr + 1, &endptr, 10);
    1944         108 :     if (*endptr)
    1945         108 :         micro = strtol(endptr + 1, &endptr, 10);
    1946         108 :     snprintf(infoversion, sizeof(infoversion), "%02ld.%02ld.%04ld%s",
    1947             :              major, minor, micro, letterversion);
    1948         108 : }
    1949             : 
    1950             : /*
    1951             :  * load info schema and populate from features file
    1952             :  */
    1953             : static void
    1954          90 : setup_schema(FILE *cmdfd)
    1955             : {
    1956          90 :     setup_run_file(cmdfd, info_schema_file);
    1957             : 
    1958          90 :     PG_CMD_PRINTF("UPDATE information_schema.sql_implementation_info "
    1959             :                   "  SET character_value = '%s' "
    1960             :                   "  WHERE implementation_info_name = 'DBMS VERSION';\n\n",
    1961             :                   infoversion);
    1962             : 
    1963          90 :     PG_CMD_PRINTF("COPY information_schema.sql_features "
    1964             :                   "  (feature_id, feature_name, sub_feature_id, "
    1965             :                   "  sub_feature_name, is_supported, comments) "
    1966             :                   " FROM E'%s';\n\n",
    1967             :                   escape_quotes(features_file));
    1968          90 : }
    1969             : 
    1970             : /*
    1971             :  * load PL/pgSQL server-side language
    1972             :  */
    1973             : static void
    1974          90 : load_plpgsql(FILE *cmdfd)
    1975             : {
    1976          90 :     PG_CMD_PUTS("CREATE EXTENSION plpgsql;\n\n");
    1977          90 : }
    1978             : 
    1979             : /*
    1980             :  * clean everything up in template1
    1981             :  */
    1982             : static void
    1983          90 : vacuum_db(FILE *cmdfd)
    1984             : {
    1985             :     /* Run analyze before VACUUM so the statistics are frozen. */
    1986          90 :     PG_CMD_PUTS("ANALYZE;\n\nVACUUM FREEZE;\n\n");
    1987          90 : }
    1988             : 
    1989             : /*
    1990             :  * copy template1 to template0
    1991             :  */
    1992             : static void
    1993          90 : make_template0(FILE *cmdfd)
    1994             : {
    1995             :     /*
    1996             :      * pg_upgrade tries to preserve database OIDs across upgrades. It's smart
    1997             :      * enough to drop and recreate a conflicting database with the same name,
    1998             :      * but if the same OID were used for one system-created database in the
    1999             :      * old cluster and a different system-created database in the new cluster,
    2000             :      * it would fail. To avoid that, assign a fixed OID to template0 rather
    2001             :      * than letting the server choose one.
    2002             :      *
    2003             :      * (Note that, while the user could have dropped and recreated these
    2004             :      * objects in the old cluster, the problem scenario only exists if the OID
    2005             :      * that is in use in the old cluster is also used in the new cluster - and
    2006             :      * the new cluster should be the result of a fresh initdb.)
    2007             :      *
    2008             :      * We use "STRATEGY = file_copy" here because checkpoints during initdb
    2009             :      * are cheap. "STRATEGY = wal_log" would generate more WAL, which would be
    2010             :      * a little bit slower and make the new cluster a little bit bigger.
    2011             :      */
    2012          90 :     PG_CMD_PUTS("CREATE DATABASE template0 IS_TEMPLATE = true ALLOW_CONNECTIONS = false"
    2013             :                 " OID = " CppAsString2(Template0DbOid)
    2014             :                 " STRATEGY = file_copy;\n\n");
    2015             : 
    2016             :     /*
    2017             :      * template0 shouldn't have any collation-dependent objects, so unset the
    2018             :      * collation version.  This disables collation version checks when making
    2019             :      * a new database from it.
    2020             :      */
    2021          90 :     PG_CMD_PUTS("UPDATE pg_database SET datcollversion = NULL WHERE datname = 'template0';\n\n");
    2022             : 
    2023             :     /*
    2024             :      * While we are here, do set the collation version on template1.
    2025             :      */
    2026          90 :     PG_CMD_PUTS("UPDATE pg_database SET datcollversion = pg_database_collation_actual_version(oid) WHERE datname = 'template1';\n\n");
    2027             : 
    2028             :     /*
    2029             :      * Explicitly revoke public create-schema and create-temp-table privileges
    2030             :      * in template1 and template0; else the latter would be on by default
    2031             :      */
    2032          90 :     PG_CMD_PUTS("REVOKE CREATE,TEMPORARY ON DATABASE template1 FROM public;\n\n");
    2033          90 :     PG_CMD_PUTS("REVOKE CREATE,TEMPORARY ON DATABASE template0 FROM public;\n\n");
    2034             : 
    2035          90 :     PG_CMD_PUTS("COMMENT ON DATABASE template0 IS 'unmodifiable empty database';\n\n");
    2036             : 
    2037             :     /*
    2038             :      * Finally vacuum to clean up dead rows in pg_database
    2039             :      */
    2040          90 :     PG_CMD_PUTS("VACUUM pg_database;\n\n");
    2041          90 : }
    2042             : 
    2043             : /*
    2044             :  * copy template1 to postgres
    2045             :  */
    2046             : static void
    2047          90 : make_postgres(FILE *cmdfd)
    2048             : {
    2049             :     /*
    2050             :      * Just as we did for template0, and for the same reasons, assign a fixed
    2051             :      * OID to postgres and select the file_copy strategy.
    2052             :      */
    2053          90 :     PG_CMD_PUTS("CREATE DATABASE postgres OID = " CppAsString2(PostgresDbOid)
    2054             :                 " STRATEGY = file_copy;\n\n");
    2055          90 :     PG_CMD_PUTS("COMMENT ON DATABASE postgres IS 'default administrative connection database';\n\n");
    2056          90 : }
    2057             : 
    2058             : /*
    2059             :  * signal handler in case we are interrupted.
    2060             :  *
    2061             :  * The Windows runtime docs at
    2062             :  * https://docs.microsoft.com/en-us/cpp/c-runtime-library/reference/signal
    2063             :  * specifically forbid a number of things being done from a signal handler,
    2064             :  * including IO, memory allocation and system calls, and only allow jmpbuf
    2065             :  * if you are handling SIGFPE.
    2066             :  *
    2067             :  * I avoided doing the forbidden things by setting a flag instead of calling
    2068             :  * exit() directly.
    2069             :  *
    2070             :  * Also note the behaviour of Windows with SIGINT, which says this:
    2071             :  *  SIGINT is not supported for any Win32 application. When a CTRL+C interrupt
    2072             :  *  occurs, Win32 operating systems generate a new thread to specifically
    2073             :  *  handle that interrupt. This can cause a single-thread application, such as
    2074             :  *  one in UNIX, to become multithreaded and cause unexpected behavior.
    2075             :  *
    2076             :  * I have no idea how to handle this. (Strange they call UNIX an application!)
    2077             :  * So this will need some testing on Windows.
    2078             :  */
    2079             : static void
    2080           0 : trapsig(SIGNAL_ARGS)
    2081             : {
    2082             :     /* handle systems that reset the handler, like Windows (grr) */
    2083           0 :     pqsignal(postgres_signal_arg, trapsig);
    2084           0 :     caught_signal = true;
    2085           0 : }
    2086             : 
    2087             : /*
    2088             :  * call exit() if we got a signal, or else output "ok".
    2089             :  */
    2090             : static void
    2091         468 : check_ok(void)
    2092             : {
    2093         468 :     if (caught_signal)
    2094             :     {
    2095           0 :         printf(_("caught signal\n"));
    2096           0 :         fflush(stdout);
    2097           0 :         exit(1);
    2098             :     }
    2099         468 :     else if (output_failed)
    2100             :     {
    2101           0 :         printf(_("could not write to child process: %s\n"),
    2102             :                strerror(output_errno));
    2103           0 :         fflush(stdout);
    2104           0 :         exit(1);
    2105             :     }
    2106             :     else
    2107             :     {
    2108             :         /* all seems well */
    2109         468 :         printf(_("ok\n"));
    2110         468 :         fflush(stdout);
    2111             :     }
    2112         468 : }
    2113             : 
    2114             : /* Hack to suppress a warning about %x from some versions of gcc */
    2115             : static inline size_t
    2116          92 : my_strftime(char *s, size_t max, const char *fmt, const struct tm *tm)
    2117             : {
    2118          92 :     return strftime(s, max, fmt, tm);
    2119             : }
    2120             : 
    2121             : /*
    2122             :  * Determine likely date order from locale
    2123             :  */
    2124             : static int
    2125          92 : locale_date_order(const char *locale)
    2126             : {
    2127             :     struct tm   testtime;
    2128             :     char        buf[128];
    2129             :     char       *posD;
    2130             :     char       *posM;
    2131             :     char       *posY;
    2132             :     save_locale_t save;
    2133             :     size_t      res;
    2134             :     int         result;
    2135             : 
    2136          92 :     result = DATEORDER_MDY;     /* default */
    2137             : 
    2138          92 :     save = save_global_locale(LC_TIME);
    2139             : 
    2140          92 :     setlocale(LC_TIME, locale);
    2141             : 
    2142          92 :     memset(&testtime, 0, sizeof(testtime));
    2143          92 :     testtime.tm_mday = 22;
    2144          92 :     testtime.tm_mon = 10;       /* November, should come out as "11" */
    2145          92 :     testtime.tm_year = 133;     /* 2033 */
    2146             : 
    2147          92 :     res = my_strftime(buf, sizeof(buf), "%x", &testtime);
    2148             : 
    2149          92 :     restore_global_locale(LC_TIME, save);
    2150             : 
    2151          92 :     if (res == 0)
    2152           0 :         return result;
    2153             : 
    2154          92 :     posM = strstr(buf, "11");
    2155          92 :     posD = strstr(buf, "22");
    2156          92 :     posY = strstr(buf, "33");
    2157             : 
    2158          92 :     if (!posM || !posD || !posY)
    2159           0 :         return result;
    2160             : 
    2161          92 :     if (posY < posM && posM < posD)
    2162           0 :         result = DATEORDER_YMD;
    2163          92 :     else if (posD < posM)
    2164           0 :         result = DATEORDER_DMY;
    2165             :     else
    2166          92 :         result = DATEORDER_MDY;
    2167             : 
    2168          92 :     return result;
    2169             : }
    2170             : 
    2171             : /*
    2172             :  * Verify that locale name is valid for the locale category.
    2173             :  *
    2174             :  * If successful, and canonname isn't NULL, a malloc'd copy of the locale's
    2175             :  * canonical name is stored there.  This is especially useful for figuring out
    2176             :  * what locale name "" means (ie, the environment value).  (Actually,
    2177             :  * it seems that on most implementations that's the only thing it's good for;
    2178             :  * we could wish that setlocale gave back a canonically spelled version of
    2179             :  * the locale name, but typically it doesn't.)
    2180             :  *
    2181             :  * this should match the backend's check_locale() function
    2182             :  */
    2183             : static void
    2184         648 : check_locale_name(int category, const char *locale, char **canonname)
    2185             : {
    2186             :     save_locale_t save;
    2187             :     char       *res;
    2188             : 
    2189             :     /* Don't let Windows' non-ASCII locale names in. */
    2190         648 :     if (locale && !pg_is_ascii(locale))
    2191           0 :         pg_fatal("locale name \"%s\" contains non-ASCII characters", locale);
    2192             : 
    2193         648 :     if (canonname)
    2194         648 :         *canonname = NULL;      /* in case of failure */
    2195             : 
    2196         648 :     save = save_global_locale(category);
    2197             : 
    2198             :     /* for setlocale() call */
    2199         648 :     if (!locale)
    2200         428 :         locale = "";
    2201             : 
    2202             :     /* set the locale with setlocale, to see if it accepts it. */
    2203         648 :     res = setlocale(category, locale);
    2204             : 
    2205             :     /* save canonical name if requested. */
    2206         648 :     if (res && canonname)
    2207         648 :         *canonname = pg_strdup(res);
    2208             : 
    2209             :     /* restore old value. */
    2210         648 :     restore_global_locale(category, save);
    2211             : 
    2212             :     /* complain if locale wasn't valid */
    2213         648 :     if (res == NULL)
    2214             :     {
    2215           0 :         if (*locale)
    2216             :         {
    2217           0 :             pg_log_error("invalid locale name \"%s\"", locale);
    2218           0 :             pg_log_error_hint("If the locale name is specific to ICU, use --icu-locale.");
    2219           0 :             exit(1);
    2220             :         }
    2221             :         else
    2222             :         {
    2223             :             /*
    2224             :              * If no relevant switch was given on command line, locale is an
    2225             :              * empty string, which is not too helpful to report.  Presumably
    2226             :              * setlocale() found something it did not like in the environment.
    2227             :              * Ideally we'd report the bad environment variable, but since
    2228             :              * setlocale's behavior is implementation-specific, it's hard to
    2229             :              * be sure what it didn't like.  Print a safe generic message.
    2230             :              */
    2231           0 :             pg_fatal("invalid locale settings; check LANG and LC_* environment variables");
    2232             :         }
    2233             :     }
    2234             : 
    2235             :     /* Don't let Windows' non-ASCII locale names out. */
    2236         648 :     if (canonname && !pg_is_ascii(*canonname))
    2237           0 :         pg_fatal("locale name \"%s\" contains non-ASCII characters",
    2238             :                  *canonname);
    2239         648 : }
    2240             : 
    2241             : /*
    2242             :  * check if the chosen encoding matches the encoding required by the locale
    2243             :  *
    2244             :  * this should match the similar check in the backend createdb() function
    2245             :  */
    2246             : static bool
    2247         204 : check_locale_encoding(const char *locale, int user_enc)
    2248             : {
    2249             :     int         locale_enc;
    2250             : 
    2251         204 :     locale_enc = pg_get_encoding_from_locale(locale, true);
    2252             : 
    2253             :     /* See notes in createdb() to understand these tests */
    2254         212 :     if (!(locale_enc == user_enc ||
    2255           8 :           locale_enc == PG_SQL_ASCII ||
    2256             :           locale_enc == -1 ||
    2257             : #ifdef WIN32
    2258             :           user_enc == PG_UTF8 ||
    2259             : #endif
    2260             :           user_enc == PG_SQL_ASCII))
    2261             :     {
    2262           0 :         pg_log_error("encoding mismatch");
    2263           0 :         pg_log_error_detail("The encoding you selected (%s) and the encoding that the "
    2264             :                             "selected locale uses (%s) do not match. This would lead to "
    2265             :                             "misbehavior in various character string processing functions.",
    2266             :                             pg_encoding_to_char(user_enc),
    2267             :                             pg_encoding_to_char(locale_enc));
    2268           0 :         pg_log_error_hint("Rerun %s and either do not specify an encoding explicitly, "
    2269             :                           "or choose a matching combination.",
    2270             :                           progname);
    2271           0 :         return false;
    2272             :     }
    2273         204 :     return true;
    2274             : }
    2275             : 
    2276             : /*
    2277             :  * check if the chosen encoding matches is supported by ICU
    2278             :  *
    2279             :  * this should match the similar check in the backend createdb() function
    2280             :  */
    2281             : static bool
    2282          12 : check_icu_locale_encoding(int user_enc)
    2283             : {
    2284          12 :     if (!(is_encoding_supported_by_icu(user_enc)))
    2285             :     {
    2286           2 :         pg_log_error("encoding mismatch");
    2287           2 :         pg_log_error_detail("The encoding you selected (%s) is not supported with the ICU provider.",
    2288             :                             pg_encoding_to_char(user_enc));
    2289           2 :         pg_log_error_hint("Rerun %s and either do not specify an encoding explicitly, "
    2290             :                           "or choose a matching combination.",
    2291             :                           progname);
    2292           2 :         return false;
    2293             :     }
    2294          10 :     return true;
    2295             : }
    2296             : 
    2297             : /*
    2298             :  * Convert to canonical BCP47 language tag. Must be consistent with
    2299             :  * icu_language_tag().
    2300             :  */
    2301             : static char *
    2302          14 : icu_language_tag(const char *loc_str)
    2303             : {
    2304             : #ifdef USE_ICU
    2305             :     UErrorCode  status;
    2306             :     char       *langtag;
    2307          14 :     size_t      buflen = 32;    /* arbitrary starting buffer size */
    2308          14 :     const bool  strict = true;
    2309             : 
    2310             :     /*
    2311             :      * A BCP47 language tag doesn't have a clearly-defined upper limit (cf.
    2312             :      * RFC5646 section 4.4). Additionally, in older ICU versions,
    2313             :      * uloc_toLanguageTag() doesn't always return the ultimate length on the
    2314             :      * first call, necessitating a loop.
    2315             :      */
    2316          14 :     langtag = pg_malloc(buflen);
    2317             :     while (true)
    2318             :     {
    2319          14 :         status = U_ZERO_ERROR;
    2320          14 :         uloc_toLanguageTag(loc_str, langtag, buflen, strict, &status);
    2321             : 
    2322             :         /* try again if the buffer is not large enough */
    2323          14 :         if (status == U_BUFFER_OVERFLOW_ERROR ||
    2324          14 :             status == U_STRING_NOT_TERMINATED_WARNING)
    2325             :         {
    2326           0 :             buflen = buflen * 2;
    2327           0 :             langtag = pg_realloc(langtag, buflen);
    2328           0 :             continue;
    2329             :         }
    2330             : 
    2331          14 :         break;
    2332             :     }
    2333             : 
    2334          14 :     if (U_FAILURE(status))
    2335             :     {
    2336           0 :         pg_free(langtag);
    2337             : 
    2338           0 :         pg_fatal("could not convert locale name \"%s\" to language tag: %s",
    2339             :                  loc_str, u_errorName(status));
    2340             :     }
    2341             : 
    2342          14 :     return langtag;
    2343             : #else
    2344             :     pg_fatal("ICU is not supported in this build");
    2345             :     return NULL;                /* keep compiler quiet */
    2346             : #endif
    2347             : }
    2348             : 
    2349             : /*
    2350             :  * Perform best-effort check that the locale is a valid one. Should be
    2351             :  * consistent with pg_locale.c, except that it doesn't need to open the
    2352             :  * collator (that will happen during post-bootstrap initialization).
    2353             :  */
    2354             : static void
    2355          14 : icu_validate_locale(const char *loc_str)
    2356             : {
    2357             : #ifdef USE_ICU
    2358             :     UErrorCode  status;
    2359             :     char        lang[ULOC_LANG_CAPACITY];
    2360          14 :     bool        found = false;
    2361             : 
    2362             :     /* validate that we can extract the language */
    2363          14 :     status = U_ZERO_ERROR;
    2364          14 :     uloc_getLanguage(loc_str, lang, ULOC_LANG_CAPACITY, &status);
    2365          14 :     if (U_FAILURE(status))
    2366             :     {
    2367           0 :         pg_fatal("could not get language from locale \"%s\": %s",
    2368             :                  loc_str, u_errorName(status));
    2369             :         return;
    2370             :     }
    2371             : 
    2372             :     /* check for special language name */
    2373          14 :     if (strcmp(lang, "") == 0 ||
    2374           8 :         strcmp(lang, "root") == 0 || strcmp(lang, "und") == 0)
    2375           6 :         found = true;
    2376             : 
    2377             :     /* search for matching language within ICU */
    2378        2364 :     for (int32_t i = 0; !found && i < uloc_countAvailable(); i++)
    2379             :     {
    2380        2350 :         const char *otherloc = uloc_getAvailable(i);
    2381             :         char        otherlang[ULOC_LANG_CAPACITY];
    2382             : 
    2383        2350 :         status = U_ZERO_ERROR;
    2384        2350 :         uloc_getLanguage(otherloc, otherlang, ULOC_LANG_CAPACITY, &status);
    2385        2350 :         if (U_FAILURE(status))
    2386           0 :             continue;
    2387             : 
    2388        2350 :         if (strcmp(lang, otherlang) == 0)
    2389           6 :             found = true;
    2390             :     }
    2391             : 
    2392          14 :     if (!found)
    2393           2 :         pg_fatal("locale \"%s\" has unknown language \"%s\"",
    2394             :                  loc_str, lang);
    2395             : #else
    2396             :     pg_fatal("ICU is not supported in this build");
    2397             : #endif
    2398             : }
    2399             : 
    2400             : /*
    2401             :  * set up the locale variables
    2402             :  *
    2403             :  * assumes we have called setlocale(LC_ALL, "") -- see set_pglocale_pgservice
    2404             :  */
    2405             : static void
    2406         108 : setlocales(void)
    2407             : {
    2408             :     char       *canonname;
    2409             : 
    2410             :     /* set empty lc_* and datlocale values to locale config if set */
    2411             : 
    2412         108 :     if (locale)
    2413             :     {
    2414          34 :         if (!lc_ctype)
    2415          30 :             lc_ctype = locale;
    2416          34 :         if (!lc_collate)
    2417          32 :             lc_collate = locale;
    2418          34 :         if (!lc_numeric)
    2419          32 :             lc_numeric = locale;
    2420          34 :         if (!lc_time)
    2421          32 :             lc_time = locale;
    2422          34 :         if (!lc_monetary)
    2423          32 :             lc_monetary = locale;
    2424          34 :         if (!lc_messages)
    2425          32 :             lc_messages = locale;
    2426          34 :         if (!datlocale && locale_provider != COLLPROVIDER_LIBC)
    2427           6 :             datlocale = locale;
    2428             :     }
    2429             : 
    2430             :     /*
    2431             :      * canonicalize locale names, and obtain any missing values from our
    2432             :      * current environment
    2433             :      */
    2434         108 :     check_locale_name(LC_CTYPE, lc_ctype, &canonname);
    2435         108 :     lc_ctype = canonname;
    2436         108 :     check_locale_name(LC_COLLATE, lc_collate, &canonname);
    2437         108 :     lc_collate = canonname;
    2438         108 :     check_locale_name(LC_NUMERIC, lc_numeric, &canonname);
    2439         108 :     lc_numeric = canonname;
    2440         108 :     check_locale_name(LC_TIME, lc_time, &canonname);
    2441         108 :     lc_time = canonname;
    2442         108 :     check_locale_name(LC_MONETARY, lc_monetary, &canonname);
    2443         108 :     lc_monetary = canonname;
    2444             : #if defined(LC_MESSAGES) && !defined(WIN32)
    2445         108 :     check_locale_name(LC_MESSAGES, lc_messages, &canonname);
    2446         108 :     lc_messages = canonname;
    2447             : #else
    2448             :     /* when LC_MESSAGES is not available, use the LC_CTYPE setting */
    2449             :     check_locale_name(LC_CTYPE, lc_messages, &canonname);
    2450             :     lc_messages = canonname;
    2451             : #endif
    2452             : 
    2453         108 :     if (locale_provider != COLLPROVIDER_LIBC && datlocale == NULL)
    2454           4 :         pg_fatal("locale must be specified if provider is %s",
    2455             :                  collprovider_name(locale_provider));
    2456             : 
    2457         104 :     if (locale_provider == COLLPROVIDER_BUILTIN)
    2458             :     {
    2459          10 :         if (strcmp(datlocale, "C") == 0)
    2460           4 :             canonname = "C";
    2461           6 :         else if (strcmp(datlocale, "C.UTF-8") == 0 ||
    2462           0 :                  strcmp(datlocale, "C.UTF8") == 0)
    2463           6 :             canonname = "C.UTF-8";
    2464             :         else
    2465           0 :             pg_fatal("invalid locale name \"%s\" for builtin provider",
    2466             :                      datlocale);
    2467             : 
    2468          10 :         datlocale = canonname;
    2469             :     }
    2470          94 :     else if (locale_provider == COLLPROVIDER_ICU)
    2471             :     {
    2472             :         char       *langtag;
    2473             : 
    2474             :         /* canonicalize to a language tag */
    2475          14 :         langtag = icu_language_tag(datlocale);
    2476          14 :         printf(_("Using language tag \"%s\" for ICU locale \"%s\".\n"),
    2477             :                langtag, datlocale);
    2478          14 :         pg_free(datlocale);
    2479          14 :         datlocale = langtag;
    2480             : 
    2481          14 :         icu_validate_locale(datlocale);
    2482             : 
    2483             :         /*
    2484             :          * In supported builds, the ICU locale ID will be opened during
    2485             :          * post-bootstrap initialization, which will perform extra checks.
    2486             :          */
    2487             : #ifndef USE_ICU
    2488             :         pg_fatal("ICU is not supported in this build");
    2489             : #endif
    2490             :     }
    2491         102 : }
    2492             : 
    2493             : /*
    2494             :  * print help text
    2495             :  */
    2496             : static void
    2497           2 : usage(const char *progname)
    2498             : {
    2499           2 :     printf(_("%s initializes a PostgreSQL database cluster.\n\n"), progname);
    2500           2 :     printf(_("Usage:\n"));
    2501           2 :     printf(_("  %s [OPTION]... [DATADIR]\n"), progname);
    2502           2 :     printf(_("\nOptions:\n"));
    2503           2 :     printf(_("  -A, --auth=METHOD         default authentication method for local connections\n"));
    2504           2 :     printf(_("      --auth-host=METHOD    default authentication method for local TCP/IP connections\n"));
    2505           2 :     printf(_("      --auth-local=METHOD   default authentication method for local-socket connections\n"));
    2506           2 :     printf(_(" [-D, --pgdata=]DATADIR     location for this database cluster\n"));
    2507           2 :     printf(_("  -E, --encoding=ENCODING   set default encoding for new databases\n"));
    2508           2 :     printf(_("  -g, --allow-group-access  allow group read/execute on data directory\n"));
    2509           2 :     printf(_("      --icu-locale=LOCALE   set ICU locale ID for new databases\n"));
    2510           2 :     printf(_("      --icu-rules=RULES     set additional ICU collation rules for new databases\n"));
    2511           2 :     printf(_("  -k, --data-checksums      use data page checksums\n"));
    2512           2 :     printf(_("      --locale=LOCALE       set default locale for new databases\n"));
    2513           2 :     printf(_("      --lc-collate=, --lc-ctype=, --lc-messages=LOCALE\n"
    2514             :              "      --lc-monetary=, --lc-numeric=, --lc-time=LOCALE\n"
    2515             :              "                            set default locale in the respective category for\n"
    2516             :              "                            new databases (default taken from environment)\n"));
    2517           2 :     printf(_("      --no-locale           equivalent to --locale=C\n"));
    2518           2 :     printf(_("      --builtin-locale=LOCALE\n"
    2519             :              "                            set builtin locale name for new databases\n"));
    2520           2 :     printf(_("      --locale-provider={builtin|libc|icu}\n"
    2521             :              "                            set default locale provider for new databases\n"));
    2522           2 :     printf(_("      --no-data-checksums   do not use data page checksums\n"));
    2523           2 :     printf(_("      --pwfile=FILE         read password for the new superuser from file\n"));
    2524           2 :     printf(_("  -T, --text-search-config=CFG\n"
    2525             :              "                            default text search configuration\n"));
    2526           2 :     printf(_("  -U, --username=NAME       database superuser name\n"));
    2527           2 :     printf(_("  -W, --pwprompt            prompt for a password for the new superuser\n"));
    2528           2 :     printf(_("  -X, --waldir=WALDIR       location for the write-ahead log directory\n"));
    2529           2 :     printf(_("      --wal-segsize=SIZE    size of WAL segments, in megabytes\n"));
    2530           2 :     printf(_("\nLess commonly used options:\n"));
    2531           2 :     printf(_("  -c, --set NAME=VALUE      override default setting for server parameter\n"));
    2532           2 :     printf(_("  -d, --debug               generate lots of debugging output\n"));
    2533           2 :     printf(_("      --discard-caches      set debug_discard_caches=1\n"));
    2534           2 :     printf(_("  -L DIRECTORY              where to find the input files\n"));
    2535           2 :     printf(_("  -n, --no-clean            do not clean up after errors\n"));
    2536           2 :     printf(_("  -N, --no-sync             do not wait for changes to be written safely to disk\n"));
    2537           2 :     printf(_("      --no-instructions     do not print instructions for next steps\n"));
    2538           2 :     printf(_("  -s, --show                show internal settings, then exit\n"));
    2539           2 :     printf(_("      --sync-method=METHOD  set method for syncing files to disk\n"));
    2540           2 :     printf(_("  -S, --sync-only           only sync database files to disk, then exit\n"));
    2541           2 :     printf(_("\nOther options:\n"));
    2542           2 :     printf(_("  -V, --version             output version information, then exit\n"));
    2543           2 :     printf(_("  -?, --help                show this help, then exit\n"));
    2544           2 :     printf(_("\nIf the data directory is not specified, the environment variable PGDATA\n"
    2545             :              "is used.\n"));
    2546           2 :     printf(_("\nReport bugs to <%s>.\n"), PACKAGE_BUGREPORT);
    2547           2 :     printf(_("%s home page: <%s>\n"), PACKAGE_NAME, PACKAGE_URL);
    2548           2 : }
    2549             : 
    2550             : static void
    2551         220 : check_authmethod_unspecified(const char **authmethod)
    2552             : {
    2553         220 :     if (*authmethod == NULL)
    2554             :     {
    2555          92 :         authwarning = true;
    2556          92 :         *authmethod = "trust";
    2557             :     }
    2558         220 : }
    2559             : 
    2560             : static void
    2561         220 : check_authmethod_valid(const char *authmethod, const char *const *valid_methods, const char *conntype)
    2562             : {
    2563             :     const char *const *p;
    2564             : 
    2565         220 :     for (p = valid_methods; *p; p++)
    2566             :     {
    2567         220 :         if (strcmp(authmethod, *p) == 0)
    2568         220 :             return;
    2569             :     }
    2570             : 
    2571           0 :     pg_fatal("invalid authentication method \"%s\" for \"%s\" connections",
    2572             :              authmethod, conntype);
    2573             : }
    2574             : 
    2575             : static void
    2576         110 : check_need_password(const char *authmethodlocal, const char *authmethodhost)
    2577             : {
    2578         110 :     if ((strcmp(authmethodlocal, "md5") == 0 ||
    2579         110 :          strcmp(authmethodlocal, "password") == 0 ||
    2580         110 :          strcmp(authmethodlocal, "scram-sha-256") == 0) &&
    2581           0 :         (strcmp(authmethodhost, "md5") == 0 ||
    2582           0 :          strcmp(authmethodhost, "password") == 0 ||
    2583           0 :          strcmp(authmethodhost, "scram-sha-256") == 0) &&
    2584           0 :         !(pwprompt || pwfilename))
    2585           0 :         pg_fatal("must specify a password for the superuser to enable password authentication");
    2586         110 : }
    2587             : 
    2588             : 
    2589             : void
    2590         116 : setup_pgdata(void)
    2591             : {
    2592             :     char       *pgdata_get_env;
    2593             : 
    2594         116 :     if (!pg_data)
    2595             :     {
    2596           0 :         pgdata_get_env = getenv("PGDATA");
    2597           0 :         if (pgdata_get_env && strlen(pgdata_get_env))
    2598             :         {
    2599             :             /* PGDATA found */
    2600           0 :             pg_data = pg_strdup(pgdata_get_env);
    2601             :         }
    2602             :         else
    2603             :         {
    2604           0 :             pg_log_error("no data directory specified");
    2605           0 :             pg_log_error_hint("You must identify the directory where the data for this database system "
    2606             :                               "will reside.  Do this with either the invocation option -D or the "
    2607             :                               "environment variable PGDATA.");
    2608           0 :             exit(1);
    2609             :         }
    2610             :     }
    2611             : 
    2612         116 :     pgdata_native = pg_strdup(pg_data);
    2613         116 :     canonicalize_path(pg_data);
    2614             : 
    2615             :     /*
    2616             :      * we have to set PGDATA for postgres rather than pass it on the command
    2617             :      * line to avoid dumb quoting problems on Windows, and we would especially
    2618             :      * need quotes otherwise on Windows because paths there are most likely to
    2619             :      * have embedded spaces.
    2620             :      */
    2621         116 :     if (setenv("PGDATA", pg_data, 1) != 0)
    2622           0 :         pg_fatal("could not set environment");
    2623         116 : }
    2624             : 
    2625             : 
    2626             : void
    2627         110 : setup_bin_paths(const char *argv0)
    2628             : {
    2629             :     int         ret;
    2630             : 
    2631         110 :     if ((ret = find_other_exec(argv0, "postgres", PG_BACKEND_VERSIONSTR,
    2632             :                                backend_exec)) < 0)
    2633             :     {
    2634             :         char        full_path[MAXPGPATH];
    2635             : 
    2636           0 :         if (find_my_exec(argv0, full_path) < 0)
    2637           0 :             strlcpy(full_path, progname, sizeof(full_path));
    2638             : 
    2639           0 :         if (ret == -1)
    2640           0 :             pg_fatal("program \"%s\" is needed by %s but was not found in the same directory as \"%s\"",
    2641             :                      "postgres", progname, full_path);
    2642             :         else
    2643           0 :             pg_fatal("program \"%s\" was found by \"%s\" but was not the same version as %s",
    2644             :                      "postgres", full_path, progname);
    2645             :     }
    2646             : 
    2647             :     /* store binary directory */
    2648         110 :     strcpy(bin_path, backend_exec);
    2649         110 :     *last_dir_separator(bin_path) = '\0';
    2650         110 :     canonicalize_path(bin_path);
    2651             : 
    2652         110 :     if (!share_path)
    2653             :     {
    2654         110 :         share_path = pg_malloc(MAXPGPATH);
    2655         110 :         get_share_path(backend_exec, share_path);
    2656             :     }
    2657           0 :     else if (!is_absolute_path(share_path))
    2658           0 :         pg_fatal("input file location must be an absolute path");
    2659             : 
    2660         110 :     canonicalize_path(share_path);
    2661         110 : }
    2662             : 
    2663             : void
    2664         108 : setup_locale_encoding(void)
    2665             : {
    2666         108 :     setlocales();
    2667             : 
    2668         102 :     if (locale_provider == COLLPROVIDER_LIBC &&
    2669          80 :         strcmp(lc_ctype, lc_collate) == 0 &&
    2670          80 :         strcmp(lc_ctype, lc_time) == 0 &&
    2671          80 :         strcmp(lc_ctype, lc_numeric) == 0 &&
    2672          80 :         strcmp(lc_ctype, lc_monetary) == 0 &&
    2673          80 :         strcmp(lc_ctype, lc_messages) == 0 &&
    2674          28 :         (!datlocale || strcmp(lc_ctype, datlocale) == 0))
    2675          28 :         printf(_("The database cluster will be initialized with locale \"%s\".\n"), lc_ctype);
    2676             :     else
    2677             :     {
    2678          74 :         printf(_("The database cluster will be initialized with this locale configuration:\n"));
    2679          74 :         printf(_("  locale provider:   %s\n"), collprovider_name(locale_provider));
    2680          74 :         if (locale_provider != COLLPROVIDER_LIBC)
    2681          22 :             printf(_("  default collation: %s\n"), datlocale);
    2682          74 :         printf(_("  LC_COLLATE:  %s\n"
    2683             :                  "  LC_CTYPE:    %s\n"
    2684             :                  "  LC_MESSAGES: %s\n"
    2685             :                  "  LC_MONETARY: %s\n"
    2686             :                  "  LC_NUMERIC:  %s\n"
    2687             :                  "  LC_TIME:     %s\n"),
    2688             :                lc_collate,
    2689             :                lc_ctype,
    2690             :                lc_messages,
    2691             :                lc_monetary,
    2692             :                lc_numeric,
    2693             :                lc_time);
    2694             :     }
    2695             : 
    2696         102 :     if (!encoding)
    2697             :     {
    2698             :         int         ctype_enc;
    2699             : 
    2700          70 :         ctype_enc = pg_get_encoding_from_locale(lc_ctype, true);
    2701             : 
    2702             :         /*
    2703             :          * If ctype_enc=SQL_ASCII, it's compatible with any encoding. ICU does
    2704             :          * not support SQL_ASCII, so select UTF-8 instead.
    2705             :          */
    2706          70 :         if (locale_provider == COLLPROVIDER_ICU && ctype_enc == PG_SQL_ASCII)
    2707           2 :             ctype_enc = PG_UTF8;
    2708             : 
    2709          70 :         if (ctype_enc == -1)
    2710             :         {
    2711             :             /* Couldn't recognize the locale's codeset */
    2712           0 :             pg_log_error("could not find suitable encoding for locale \"%s\"",
    2713             :                          lc_ctype);
    2714           0 :             pg_log_error_hint("Rerun %s with the -E option.", progname);
    2715           0 :             pg_log_error_hint("Try \"%s --help\" for more information.", progname);
    2716           0 :             exit(1);
    2717             :         }
    2718          70 :         else if (!pg_valid_server_encoding_id(ctype_enc))
    2719             :         {
    2720             :             /*
    2721             :              * We recognized it, but it's not a legal server encoding. On
    2722             :              * Windows, UTF-8 works with any locale, so we can fall back to
    2723             :              * UTF-8.
    2724             :              */
    2725             : #ifdef WIN32
    2726             :             encodingid = PG_UTF8;
    2727             :             printf(_("Encoding \"%s\" implied by locale is not allowed as a server-side encoding.\n"
    2728             :                      "The default database encoding will be set to \"%s\" instead.\n"),
    2729             :                    pg_encoding_to_char(ctype_enc),
    2730             :                    pg_encoding_to_char(encodingid));
    2731             : #else
    2732           0 :             pg_log_error("locale \"%s\" requires unsupported encoding \"%s\"",
    2733             :                          lc_ctype, pg_encoding_to_char(ctype_enc));
    2734           0 :             pg_log_error_detail("Encoding \"%s\" is not allowed as a server-side encoding.",
    2735             :                                 pg_encoding_to_char(ctype_enc));
    2736           0 :             pg_log_error_hint("Rerun %s with a different locale selection.",
    2737             :                               progname);
    2738           0 :             exit(1);
    2739             : #endif
    2740             :         }
    2741             :         else
    2742             :         {
    2743          70 :             encodingid = ctype_enc;
    2744          70 :             printf(_("The default database encoding has accordingly been set to \"%s\".\n"),
    2745             :                    pg_encoding_to_char(encodingid));
    2746             :         }
    2747             :     }
    2748             :     else
    2749          32 :         encodingid = get_encoding_id(encoding);
    2750             : 
    2751         102 :     if (!check_locale_encoding(lc_ctype, encodingid) ||
    2752         102 :         !check_locale_encoding(lc_collate, encodingid))
    2753           0 :         exit(1);                /* check_locale_encoding printed the error */
    2754             : 
    2755         102 :     if (locale_provider == COLLPROVIDER_BUILTIN)
    2756             :     {
    2757          10 :         if (strcmp(datlocale, "C.UTF-8") == 0 && encodingid != PG_UTF8)
    2758           2 :             pg_fatal("builtin provider locale \"%s\" requires encoding \"%s\"",
    2759             :                      datlocale, "UTF-8");
    2760             :     }
    2761             : 
    2762         100 :     if (locale_provider == COLLPROVIDER_ICU &&
    2763          12 :         !check_icu_locale_encoding(encodingid))
    2764           2 :         exit(1);
    2765          98 : }
    2766             : 
    2767             : 
    2768             : void
    2769         108 : setup_data_file_paths(void)
    2770             : {
    2771         108 :     set_input(&bki_file, "postgres.bki");
    2772         108 :     set_input(&hba_file, "pg_hba.conf.sample");
    2773         108 :     set_input(&ident_file, "pg_ident.conf.sample");
    2774         108 :     set_input(&conf_file, "postgresql.conf.sample");
    2775         108 :     set_input(&dictionary_file, "snowball_create.sql");
    2776         108 :     set_input(&info_schema_file, "information_schema.sql");
    2777         108 :     set_input(&features_file, "sql_features.txt");
    2778         108 :     set_input(&system_constraints_file, "system_constraints.sql");
    2779         108 :     set_input(&system_functions_file, "system_functions.sql");
    2780         108 :     set_input(&system_views_file, "system_views.sql");
    2781             : 
    2782         108 :     if (show_setting || debug)
    2783             :     {
    2784           0 :         fprintf(stderr,
    2785             :                 "VERSION=%s\n"
    2786             :                 "PGDATA=%s\nshare_path=%s\nPGPATH=%s\n"
    2787             :                 "POSTGRES_SUPERUSERNAME=%s\nPOSTGRES_BKI=%s\n"
    2788             :                 "POSTGRESQL_CONF_SAMPLE=%s\n"
    2789             :                 "PG_HBA_SAMPLE=%s\nPG_IDENT_SAMPLE=%s\n",
    2790             :                 PG_VERSION,
    2791             :                 pg_data, share_path, bin_path,
    2792             :                 username, bki_file,
    2793             :                 conf_file,
    2794             :                 hba_file, ident_file);
    2795           0 :         if (show_setting)
    2796           0 :             exit(0);
    2797             :     }
    2798             : 
    2799         108 :     check_input(bki_file);
    2800         108 :     check_input(hba_file);
    2801         108 :     check_input(ident_file);
    2802         108 :     check_input(conf_file);
    2803         108 :     check_input(dictionary_file);
    2804         108 :     check_input(info_schema_file);
    2805         108 :     check_input(features_file);
    2806         108 :     check_input(system_constraints_file);
    2807         108 :     check_input(system_functions_file);
    2808         108 :     check_input(system_views_file);
    2809         108 : }
    2810             : 
    2811             : 
    2812             : void
    2813          98 : setup_text_search(void)
    2814             : {
    2815          98 :     if (!default_text_search_config)
    2816             :     {
    2817          96 :         default_text_search_config = find_matching_ts_config(lc_ctype);
    2818          96 :         if (!default_text_search_config)
    2819             :         {
    2820           0 :             pg_log_info("could not find suitable text search configuration for locale \"%s\"",
    2821             :                         lc_ctype);
    2822           0 :             default_text_search_config = "simple";
    2823             :         }
    2824             :     }
    2825             :     else
    2826             :     {
    2827           2 :         const char *checkmatch = find_matching_ts_config(lc_ctype);
    2828             : 
    2829           2 :         if (checkmatch == NULL)
    2830             :         {
    2831           0 :             pg_log_warning("suitable text search configuration for locale \"%s\" is unknown",
    2832             :                            lc_ctype);
    2833             :         }
    2834           2 :         else if (strcmp(checkmatch, default_text_search_config) != 0)
    2835             :         {
    2836           2 :             pg_log_warning("specified text search configuration \"%s\" might not match locale \"%s\"",
    2837             :                            default_text_search_config, lc_ctype);
    2838             :         }
    2839             :     }
    2840             : 
    2841          98 :     printf(_("The default text search configuration will be set to \"%s\".\n"),
    2842             :            default_text_search_config);
    2843          98 : }
    2844             : 
    2845             : 
    2846             : void
    2847          98 : setup_signals(void)
    2848             : {
    2849             :     /* some of these are not valid on Windows */
    2850             : #ifdef SIGHUP
    2851          98 :     pqsignal(SIGHUP, trapsig);
    2852             : #endif
    2853             : #ifdef SIGINT
    2854          98 :     pqsignal(SIGINT, trapsig);
    2855             : #endif
    2856             : #ifdef SIGQUIT
    2857          98 :     pqsignal(SIGQUIT, trapsig);
    2858             : #endif
    2859             : #ifdef SIGTERM
    2860          98 :     pqsignal(SIGTERM, trapsig);
    2861             : #endif
    2862             : 
    2863             :     /* Ignore SIGPIPE when writing to backend, so we can clean up */
    2864             : #ifdef SIGPIPE
    2865          98 :     pqsignal(SIGPIPE, SIG_IGN);
    2866             : #endif
    2867             : 
    2868             :     /* Prevent SIGSYS so we can probe for kernel calls that might not work */
    2869             : #ifdef SIGSYS
    2870          98 :     pqsignal(SIGSYS, SIG_IGN);
    2871             : #endif
    2872          98 : }
    2873             : 
    2874             : 
    2875             : void
    2876          98 : create_data_directory(void)
    2877             : {
    2878             :     int         ret;
    2879             : 
    2880          98 :     switch ((ret = pg_check_dir(pg_data)))
    2881             :     {
    2882          94 :         case 0:
    2883             :             /* PGDATA not there, must create it */
    2884          94 :             printf(_("creating directory %s ... "),
    2885             :                    pg_data);
    2886          94 :             fflush(stdout);
    2887             : 
    2888          94 :             if (pg_mkdir_p(pg_data, pg_dir_create_mode) != 0)
    2889           0 :                 pg_fatal("could not create directory \"%s\": %m", pg_data);
    2890             :             else
    2891          94 :                 check_ok();
    2892             : 
    2893          94 :             made_new_pgdata = true;
    2894          94 :             break;
    2895             : 
    2896           2 :         case 1:
    2897             :             /* Present but empty, fix permissions and use it */
    2898           2 :             printf(_("fixing permissions on existing directory %s ... "),
    2899             :                    pg_data);
    2900           2 :             fflush(stdout);
    2901             : 
    2902           2 :             if (chmod(pg_data, pg_dir_create_mode) != 0)
    2903           0 :                 pg_fatal("could not change permissions of directory \"%s\": %m",
    2904             :                          pg_data);
    2905             :             else
    2906           2 :                 check_ok();
    2907             : 
    2908           2 :             found_existing_pgdata = true;
    2909           2 :             break;
    2910             : 
    2911           2 :         case 2:
    2912             :         case 3:
    2913             :         case 4:
    2914             :             /* Present and not empty */
    2915           2 :             pg_log_error("directory \"%s\" exists but is not empty", pg_data);
    2916           2 :             if (ret != 4)
    2917           0 :                 warn_on_mount_point(ret);
    2918             :             else
    2919           2 :                 pg_log_error_hint("If you want to create a new database system, either remove or empty "
    2920             :                                   "the directory \"%s\" or run %s "
    2921             :                                   "with an argument other than \"%s\".",
    2922             :                                   pg_data, progname, pg_data);
    2923           2 :             exit(1);            /* no further message needed */
    2924             : 
    2925           0 :         default:
    2926             :             /* Trouble accessing directory */
    2927           0 :             pg_fatal("could not access directory \"%s\": %m", pg_data);
    2928             :     }
    2929          96 : }
    2930             : 
    2931             : 
    2932             : /* Create WAL directory, and symlink if required */
    2933             : void
    2934          96 : create_xlog_or_symlink(void)
    2935             : {
    2936             :     char       *subdirloc;
    2937             : 
    2938             :     /* form name of the place for the subdirectory or symlink */
    2939          96 :     subdirloc = psprintf("%s/pg_wal", pg_data);
    2940             : 
    2941          96 :     if (xlog_dir)
    2942             :     {
    2943             :         int         ret;
    2944             : 
    2945             :         /* clean up xlog directory name, check it's absolute */
    2946           6 :         canonicalize_path(xlog_dir);
    2947           6 :         if (!is_absolute_path(xlog_dir))
    2948           2 :             pg_fatal("WAL directory location must be an absolute path");
    2949             : 
    2950             :         /* check if the specified xlog directory exists/is empty */
    2951           4 :         switch ((ret = pg_check_dir(xlog_dir)))
    2952             :         {
    2953           0 :             case 0:
    2954             :                 /* xlog directory not there, must create it */
    2955           0 :                 printf(_("creating directory %s ... "),
    2956             :                        xlog_dir);
    2957           0 :                 fflush(stdout);
    2958             : 
    2959           0 :                 if (pg_mkdir_p(xlog_dir, pg_dir_create_mode) != 0)
    2960           0 :                     pg_fatal("could not create directory \"%s\": %m",
    2961             :                              xlog_dir);
    2962             :                 else
    2963           0 :                     check_ok();
    2964             : 
    2965           0 :                 made_new_xlogdir = true;
    2966           0 :                 break;
    2967             : 
    2968           2 :             case 1:
    2969             :                 /* Present but empty, fix permissions and use it */
    2970           2 :                 printf(_("fixing permissions on existing directory %s ... "),
    2971             :                        xlog_dir);
    2972           2 :                 fflush(stdout);
    2973             : 
    2974           2 :                 if (chmod(xlog_dir, pg_dir_create_mode) != 0)
    2975           0 :                     pg_fatal("could not change permissions of directory \"%s\": %m",
    2976             :                              xlog_dir);
    2977             :                 else
    2978           2 :                     check_ok();
    2979             : 
    2980           2 :                 found_existing_xlogdir = true;
    2981           2 :                 break;
    2982             : 
    2983           2 :             case 2:
    2984             :             case 3:
    2985             :             case 4:
    2986             :                 /* Present and not empty */
    2987           2 :                 pg_log_error("directory \"%s\" exists but is not empty", xlog_dir);
    2988           2 :                 if (ret != 4)
    2989           2 :                     warn_on_mount_point(ret);
    2990             :                 else
    2991           0 :                     pg_log_error_hint("If you want to store the WAL there, either remove or empty the directory \"%s\".",
    2992             :                                       xlog_dir);
    2993           2 :                 exit(1);
    2994             : 
    2995           0 :             default:
    2996             :                 /* Trouble accessing directory */
    2997           0 :                 pg_fatal("could not access directory \"%s\": %m", xlog_dir);
    2998             :         }
    2999             : 
    3000           2 :         if (symlink(xlog_dir, subdirloc) != 0)
    3001           0 :             pg_fatal("could not create symbolic link \"%s\": %m",
    3002             :                      subdirloc);
    3003             :     }
    3004             :     else
    3005             :     {
    3006             :         /* Without -X option, just make the subdirectory normally */
    3007          90 :         if (mkdir(subdirloc, pg_dir_create_mode) < 0)
    3008           0 :             pg_fatal("could not create directory \"%s\": %m",
    3009             :                      subdirloc);
    3010             :     }
    3011             : 
    3012          92 :     free(subdirloc);
    3013          92 : }
    3014             : 
    3015             : 
    3016             : void
    3017           2 : warn_on_mount_point(int error)
    3018             : {
    3019           2 :     if (error == 2)
    3020           0 :         pg_log_error_detail("It contains a dot-prefixed/invisible file, perhaps due to it being a mount point.");
    3021           2 :     else if (error == 3)
    3022           2 :         pg_log_error_detail("It contains a lost+found directory, perhaps due to it being a mount point.");
    3023             : 
    3024           2 :     pg_log_error_hint("Using a mount point directly as the data directory is not recommended.\n"
    3025             :                       "Create a subdirectory under the mount point.");
    3026           2 : }
    3027             : 
    3028             : 
    3029             : void
    3030          98 : initialize_data_directory(void)
    3031             : {
    3032             :     PG_CMD_DECL;
    3033             :     PQExpBufferData cmd;
    3034             :     int         i;
    3035             : 
    3036          98 :     setup_signals();
    3037             : 
    3038             :     /*
    3039             :      * Set mask based on requested PGDATA permissions.  pg_mode_mask, and
    3040             :      * friends like pg_dir_create_mode, are set to owner-only by default and
    3041             :      * then updated if -g is passed in by calling SetDataDirectoryCreatePerm()
    3042             :      * when parsing our options (see above).
    3043             :      */
    3044          98 :     umask(pg_mode_mask);
    3045             : 
    3046          98 :     create_data_directory();
    3047             : 
    3048          96 :     create_xlog_or_symlink();
    3049             : 
    3050             :     /* Create required subdirectories (other than pg_wal) */
    3051          92 :     printf(_("creating subdirectories ... "));
    3052          92 :     fflush(stdout);
    3053             : 
    3054        2208 :     for (i = 0; i < lengthof(subdirs); i++)
    3055             :     {
    3056             :         char       *path;
    3057             : 
    3058        2116 :         path = psprintf("%s/%s", pg_data, subdirs[i]);
    3059             : 
    3060             :         /*
    3061             :          * The parent directory already exists, so we only need mkdir() not
    3062             :          * pg_mkdir_p() here, which avoids some failure modes; cf bug #13853.
    3063             :          */
    3064        2116 :         if (mkdir(path, pg_dir_create_mode) < 0)
    3065           0 :             pg_fatal("could not create directory \"%s\": %m", path);
    3066             : 
    3067        2116 :         free(path);
    3068             :     }
    3069             : 
    3070          92 :     check_ok();
    3071             : 
    3072             :     /* Top level PG_VERSION is checked by bootstrapper, so make it first */
    3073          92 :     write_version_file(NULL);
    3074             : 
    3075             :     /* Select suitable configuration settings */
    3076          92 :     set_null_conf();
    3077          92 :     test_config_settings();
    3078             : 
    3079             :     /* Now create all the text config files */
    3080          92 :     setup_config();
    3081             : 
    3082             :     /* Bootstrap template1 */
    3083          92 :     bootstrap_template1();
    3084             : 
    3085             :     /*
    3086             :      * Make the per-database PG_VERSION for template1 only after init'ing it
    3087             :      */
    3088          90 :     write_version_file("base/1");
    3089             : 
    3090             :     /*
    3091             :      * Create the stuff we don't need to use bootstrap mode for, using a
    3092             :      * backend running in simple standalone mode.
    3093             :      */
    3094          90 :     fputs(_("performing post-bootstrap initialization ... "), stdout);
    3095          90 :     fflush(stdout);
    3096             : 
    3097          90 :     initPQExpBuffer(&cmd);
    3098          90 :     printfPQExpBuffer(&cmd, "\"%s\" %s %s template1 >%s",
    3099             :                       backend_exec, backend_options, extra_options, DEVNULL);
    3100             : 
    3101          90 :     PG_CMD_OPEN(cmd.data);
    3102             : 
    3103          90 :     setup_auth(cmdfd);
    3104             : 
    3105          90 :     setup_run_file(cmdfd, system_constraints_file);
    3106             : 
    3107          90 :     setup_run_file(cmdfd, system_functions_file);
    3108             : 
    3109          90 :     setup_depend(cmdfd);
    3110             : 
    3111             :     /*
    3112             :      * Note that no objects created after setup_depend() will be "pinned".
    3113             :      * They are all droppable at the whim of the DBA.
    3114             :      */
    3115             : 
    3116          90 :     setup_run_file(cmdfd, system_views_file);
    3117             : 
    3118          90 :     setup_description(cmdfd);
    3119             : 
    3120          90 :     setup_collation(cmdfd);
    3121             : 
    3122          90 :     setup_run_file(cmdfd, dictionary_file);
    3123             : 
    3124          90 :     setup_privileges(cmdfd);
    3125             : 
    3126          90 :     setup_schema(cmdfd);
    3127             : 
    3128          90 :     load_plpgsql(cmdfd);
    3129             : 
    3130          90 :     vacuum_db(cmdfd);
    3131             : 
    3132          90 :     make_template0(cmdfd);
    3133             : 
    3134          90 :     make_postgres(cmdfd);
    3135             : 
    3136          90 :     PG_CMD_CLOSE();
    3137          86 :     termPQExpBuffer(&cmd);
    3138             : 
    3139          86 :     check_ok();
    3140          86 : }
    3141             : 
    3142             : 
    3143             : int
    3144         150 : main(int argc, char *argv[])
    3145             : {
    3146             :     static struct option long_options[] = {
    3147             :         {"pgdata", required_argument, NULL, 'D'},
    3148             :         {"encoding", required_argument, NULL, 'E'},
    3149             :         {"locale", required_argument, NULL, 1},
    3150             :         {"lc-collate", required_argument, NULL, 2},
    3151             :         {"lc-ctype", required_argument, NULL, 3},
    3152             :         {"lc-monetary", required_argument, NULL, 4},
    3153             :         {"lc-numeric", required_argument, NULL, 5},
    3154             :         {"lc-time", required_argument, NULL, 6},
    3155             :         {"lc-messages", required_argument, NULL, 7},
    3156             :         {"no-locale", no_argument, NULL, 8},
    3157             :         {"text-search-config", required_argument, NULL, 'T'},
    3158             :         {"auth", required_argument, NULL, 'A'},
    3159             :         {"auth-local", required_argument, NULL, 10},
    3160             :         {"auth-host", required_argument, NULL, 11},
    3161             :         {"pwprompt", no_argument, NULL, 'W'},
    3162             :         {"pwfile", required_argument, NULL, 9},
    3163             :         {"username", required_argument, NULL, 'U'},
    3164             :         {"help", no_argument, NULL, '?'},
    3165             :         {"version", no_argument, NULL, 'V'},
    3166             :         {"debug", no_argument, NULL, 'd'},
    3167             :         {"show", no_argument, NULL, 's'},
    3168             :         {"noclean", no_argument, NULL, 'n'},  /* for backwards compatibility */
    3169             :         {"no-clean", no_argument, NULL, 'n'},
    3170             :         {"nosync", no_argument, NULL, 'N'}, /* for backwards compatibility */
    3171             :         {"no-sync", no_argument, NULL, 'N'},
    3172             :         {"no-instructions", no_argument, NULL, 13},
    3173             :         {"set", required_argument, NULL, 'c'},
    3174             :         {"sync-only", no_argument, NULL, 'S'},
    3175             :         {"waldir", required_argument, NULL, 'X'},
    3176             :         {"wal-segsize", required_argument, NULL, 12},
    3177             :         {"data-checksums", no_argument, NULL, 'k'},
    3178             :         {"allow-group-access", no_argument, NULL, 'g'},
    3179             :         {"discard-caches", no_argument, NULL, 14},
    3180             :         {"locale-provider", required_argument, NULL, 15},
    3181             :         {"builtin-locale", required_argument, NULL, 16},
    3182             :         {"icu-locale", required_argument, NULL, 17},
    3183             :         {"icu-rules", required_argument, NULL, 18},
    3184             :         {"sync-method", required_argument, NULL, 19},
    3185             :         {"no-data-checksums", no_argument, NULL, 20},
    3186             :         {NULL, 0, NULL, 0}
    3187             :     };
    3188             : 
    3189             :     /*
    3190             :      * options with no short version return a low integer, the rest return
    3191             :      * their short version value
    3192             :      */
    3193             :     int         c;
    3194             :     int         option_index;
    3195             :     char       *effective_user;
    3196             :     PQExpBuffer start_db_cmd;
    3197             :     char        pg_ctl_path[MAXPGPATH];
    3198             : 
    3199             :     /*
    3200             :      * Ensure that buffering behavior of stdout matches what it is in
    3201             :      * interactive usage (at least on most platforms).  This prevents
    3202             :      * unexpected output ordering when, eg, output is redirected to a file.
    3203             :      * POSIX says we must do this before any other usage of these files.
    3204             :      */
    3205         150 :     setvbuf(stdout, NULL, PG_IOLBF, 0);
    3206             : 
    3207         150 :     pg_logging_init(argv[0]);
    3208         150 :     progname = get_progname(argv[0]);
    3209         150 :     set_pglocale_pgservice(argv[0], PG_TEXTDOMAIN("initdb"));
    3210             : 
    3211         150 :     if (argc > 1)
    3212             :     {
    3213         150 :         if (strcmp(argv[1], "--help") == 0 || strcmp(argv[1], "-?") == 0)
    3214             :         {
    3215           2 :             usage(progname);
    3216           2 :             exit(0);
    3217             :         }
    3218         148 :         if (strcmp(argv[1], "--version") == 0 || strcmp(argv[1], "-V") == 0)
    3219             :         {
    3220          22 :             puts("initdb (PostgreSQL) " PG_VERSION);
    3221          22 :             exit(0);
    3222             :         }
    3223             :     }
    3224             : 
    3225             :     /* process command-line options */
    3226             : 
    3227         592 :     while ((c = getopt_long(argc, argv, "A:c:dD:E:gkL:nNsST:U:WX:",
    3228             :                             long_options, &option_index)) != -1)
    3229             :     {
    3230         470 :         switch (c)
    3231             :         {
    3232          64 :             case 'A':
    3233          64 :                 authmethodlocal = authmethodhost = pg_strdup(optarg);
    3234             : 
    3235             :                 /*
    3236             :                  * When ident is specified, use peer for local connections.
    3237             :                  * Mirrored, when peer is specified, use ident for TCP/IP
    3238             :                  * connections.
    3239             :                  */
    3240          64 :                 if (strcmp(authmethodhost, "ident") == 0)
    3241           0 :                     authmethodlocal = "peer";
    3242          64 :                 else if (strcmp(authmethodlocal, "peer") == 0)
    3243           0 :                     authmethodhost = "ident";
    3244          64 :                 break;
    3245           0 :             case 10:
    3246           0 :                 authmethodlocal = pg_strdup(optarg);
    3247           0 :                 break;
    3248           0 :             case 11:
    3249           0 :                 authmethodhost = pg_strdup(optarg);
    3250           0 :                 break;
    3251          10 :             case 'c':
    3252             :                 {
    3253          10 :                     char       *buf = pg_strdup(optarg);
    3254          10 :                     char       *equals = strchr(buf, '=');
    3255             : 
    3256          10 :                     if (!equals)
    3257             :                     {
    3258           0 :                         pg_log_error("-c %s requires a value", buf);
    3259           0 :                         pg_log_error_hint("Try \"%s --help\" for more information.",
    3260             :                                           progname);
    3261           0 :                         exit(1);
    3262             :                     }
    3263          10 :                     *equals++ = '\0';   /* terminate variable name */
    3264          10 :                     add_stringlist_item(&extra_guc_names, buf);
    3265          10 :                     add_stringlist_item(&extra_guc_values, equals);
    3266          10 :                     pfree(buf);
    3267             :                 }
    3268          10 :                 break;
    3269          64 :             case 'D':
    3270          64 :                 pg_data = pg_strdup(optarg);
    3271          64 :                 break;
    3272          32 :             case 'E':
    3273          32 :                 encoding = pg_strdup(optarg);
    3274          32 :                 break;
    3275           0 :             case 'W':
    3276           0 :                 pwprompt = true;
    3277           0 :                 break;
    3278           8 :             case 'U':
    3279           8 :                 username = pg_strdup(optarg);
    3280           8 :                 break;
    3281           0 :             case 'd':
    3282           0 :                 debug = true;
    3283           0 :                 printf(_("Running in debug mode.\n"));
    3284           0 :                 break;
    3285           8 :             case 'n':
    3286           8 :                 noclean = true;
    3287           8 :                 printf(_("Running in no-clean mode.  Mistakes will not be cleaned up.\n"));
    3288           8 :                 break;
    3289         104 :             case 'N':
    3290         104 :                 do_sync = false;
    3291         104 :                 break;
    3292           6 :             case 'S':
    3293           6 :                 sync_only = true;
    3294           6 :                 break;
    3295           2 :             case 'k':
    3296           2 :                 data_checksums = true;
    3297           2 :                 break;
    3298           0 :             case 'L':
    3299           0 :                 share_path = pg_strdup(optarg);
    3300           0 :                 break;
    3301          30 :             case 1:
    3302          30 :                 locale = pg_strdup(optarg);
    3303          30 :                 break;
    3304           8 :             case 2:
    3305           8 :                 lc_collate = pg_strdup(optarg);
    3306           8 :                 break;
    3307          10 :             case 3:
    3308          10 :                 lc_ctype = pg_strdup(optarg);
    3309          10 :                 break;
    3310           2 :             case 4:
    3311           2 :                 lc_monetary = pg_strdup(optarg);
    3312           2 :                 break;
    3313           2 :             case 5:
    3314           2 :                 lc_numeric = pg_strdup(optarg);
    3315           2 :                 break;
    3316           2 :             case 6:
    3317           2 :                 lc_time = pg_strdup(optarg);
    3318           2 :                 break;
    3319           6 :             case 7:
    3320           6 :                 lc_messages = pg_strdup(optarg);
    3321           6 :                 break;
    3322           4 :             case 8:
    3323           4 :                 locale = "C";
    3324           4 :                 break;
    3325           0 :             case 9:
    3326           0 :                 pwfilename = pg_strdup(optarg);
    3327           0 :                 break;
    3328           0 :             case 's':
    3329           0 :                 show_setting = true;
    3330           0 :                 break;
    3331           2 :             case 'T':
    3332           2 :                 default_text_search_config = pg_strdup(optarg);
    3333           2 :                 break;
    3334           6 :             case 'X':
    3335           6 :                 xlog_dir = pg_strdup(optarg);
    3336           6 :                 break;
    3337          10 :             case 12:
    3338          10 :                 if (!option_parse_int(optarg, "--wal-segsize", 1, 1024, &wal_segment_size_mb))
    3339           0 :                     exit(1);
    3340          10 :                 break;
    3341           4 :             case 13:
    3342           4 :                 noinstructions = true;
    3343           4 :                 break;
    3344          10 :             case 'g':
    3345          10 :                 SetDataDirectoryCreatePerm(PG_DIR_MODE_GROUP);
    3346          10 :                 break;
    3347           0 :             case 14:
    3348           0 :                 extra_options = psprintf("%s %s",
    3349             :                                          extra_options,
    3350             :                                          "-c debug_discard_caches=1");
    3351           0 :                 break;
    3352          38 :             case 15:
    3353          38 :                 if (strcmp(optarg, "builtin") == 0)
    3354          16 :                     locale_provider = COLLPROVIDER_BUILTIN;
    3355          22 :                 else if (strcmp(optarg, "icu") == 0)
    3356          16 :                     locale_provider = COLLPROVIDER_ICU;
    3357           6 :                 else if (strcmp(optarg, "libc") == 0)
    3358           4 :                     locale_provider = COLLPROVIDER_LIBC;
    3359             :                 else
    3360           2 :                     pg_fatal("unrecognized locale provider: %s", optarg);
    3361          36 :                 break;
    3362           6 :             case 16:
    3363           6 :                 datlocale = pg_strdup(optarg);
    3364           6 :                 builtin_locale_specified = true;
    3365           6 :                 break;
    3366          16 :             case 17:
    3367          16 :                 datlocale = pg_strdup(optarg);
    3368          16 :                 icu_locale_specified = true;
    3369          16 :                 break;
    3370           2 :             case 18:
    3371           2 :                 icu_rules = pg_strdup(optarg);
    3372           2 :                 break;
    3373           2 :             case 19:
    3374           2 :                 if (!parse_sync_method(optarg, &sync_method))
    3375           0 :                     exit(1);
    3376           2 :                 break;
    3377          10 :             case 20:
    3378          10 :                 data_checksums = false;
    3379          10 :                 break;
    3380           2 :             default:
    3381             :                 /* getopt_long already emitted a complaint */
    3382           2 :                 pg_log_error_hint("Try \"%s --help\" for more information.", progname);
    3383           2 :                 exit(1);
    3384             :         }
    3385             :     }
    3386             : 
    3387             : 
    3388             :     /*
    3389             :      * Non-option argument specifies data directory as long as it wasn't
    3390             :      * already specified with -D / --pgdata
    3391             :      */
    3392         122 :     if (optind < argc && !pg_data)
    3393             :     {
    3394          58 :         pg_data = pg_strdup(argv[optind]);
    3395          58 :         optind++;
    3396             :     }
    3397             : 
    3398         122 :     if (optind < argc)
    3399             :     {
    3400           0 :         pg_log_error("too many command-line arguments (first is \"%s\")",
    3401             :                      argv[optind]);
    3402           0 :         pg_log_error_hint("Try \"%s --help\" for more information.", progname);
    3403           0 :         exit(1);
    3404             :     }
    3405             : 
    3406         122 :     if (builtin_locale_specified && locale_provider != COLLPROVIDER_BUILTIN)
    3407           0 :         pg_fatal("%s cannot be specified unless locale provider \"%s\" is chosen",
    3408             :                  "--builtin-locale", "builtin");
    3409             : 
    3410         122 :     if (icu_locale_specified && locale_provider != COLLPROVIDER_ICU)
    3411           4 :         pg_fatal("%s cannot be specified unless locale provider \"%s\" is chosen",
    3412             :                  "--icu-locale", "icu");
    3413             : 
    3414         118 :     if (icu_rules && locale_provider != COLLPROVIDER_ICU)
    3415           2 :         pg_fatal("%s cannot be specified unless locale provider \"%s\" is chosen",
    3416             :                  "--icu-rules", "icu");
    3417             : 
    3418         116 :     atexit(cleanup_directories_atexit);
    3419             : 
    3420             :     /* If we only need to sync, just do it and exit */
    3421         116 :     if (sync_only)
    3422             :     {
    3423           6 :         setup_pgdata();
    3424             : 
    3425             :         /* must check that directory is readable */
    3426           6 :         if (pg_check_dir(pg_data) <= 0)
    3427           2 :             pg_fatal("could not access directory \"%s\": %m", pg_data);
    3428             : 
    3429           4 :         fputs(_("syncing data to disk ... "), stdout);
    3430           4 :         fflush(stdout);
    3431           4 :         sync_pgdata(pg_data, PG_VERSION_NUM, sync_method);
    3432           4 :         check_ok();
    3433           4 :         return 0;
    3434             :     }
    3435             : 
    3436         110 :     if (pwprompt && pwfilename)
    3437           0 :         pg_fatal("password prompt and password file cannot be specified together");
    3438             : 
    3439         110 :     check_authmethod_unspecified(&authmethodlocal);
    3440         110 :     check_authmethod_unspecified(&authmethodhost);
    3441             : 
    3442         110 :     check_authmethod_valid(authmethodlocal, auth_methods_local, "local");
    3443         110 :     check_authmethod_valid(authmethodhost, auth_methods_host, "host");
    3444             : 
    3445         110 :     check_need_password(authmethodlocal, authmethodhost);
    3446             : 
    3447         110 :     if (!IsValidWalSegSize(wal_segment_size_mb * 1024 * 1024))
    3448           0 :         pg_fatal("argument of %s must be a power of two between 1 and 1024", "--wal-segsize");
    3449             : 
    3450         110 :     get_restricted_token();
    3451             : 
    3452         110 :     setup_pgdata();
    3453             : 
    3454         110 :     setup_bin_paths(argv[0]);
    3455             : 
    3456         110 :     effective_user = get_id();
    3457         110 :     if (!username)
    3458         102 :         username = effective_user;
    3459             : 
    3460         110 :     if (strncmp(username, "pg_", 3) == 0)
    3461           2 :         pg_fatal("superuser name \"%s\" is disallowed; role names cannot begin with \"pg_\"", username);
    3462             : 
    3463         108 :     printf(_("The files belonging to this database system will be owned "
    3464             :              "by user \"%s\".\n"
    3465             :              "This user must also own the server process.\n\n"),
    3466             :            effective_user);
    3467             : 
    3468         108 :     set_info_version();
    3469             : 
    3470         108 :     setup_data_file_paths();
    3471             : 
    3472         108 :     setup_locale_encoding();
    3473             : 
    3474          98 :     setup_text_search();
    3475             : 
    3476          98 :     printf("\n");
    3477             : 
    3478          98 :     if (data_checksums)
    3479          88 :         printf(_("Data page checksums are enabled.\n"));
    3480             :     else
    3481          10 :         printf(_("Data page checksums are disabled.\n"));
    3482             : 
    3483          98 :     if (pwprompt || pwfilename)
    3484           0 :         get_su_pwd();
    3485             : 
    3486          98 :     printf("\n");
    3487             : 
    3488          98 :     initialize_data_directory();
    3489             : 
    3490          86 :     if (do_sync)
    3491             :     {
    3492           6 :         fputs(_("syncing data to disk ... "), stdout);
    3493           6 :         fflush(stdout);
    3494           6 :         sync_pgdata(pg_data, PG_VERSION_NUM, sync_method);
    3495           6 :         check_ok();
    3496             :     }
    3497             :     else
    3498          80 :         printf(_("\nSync to disk skipped.\nThe data directory might become corrupt if the operating system crashes.\n"));
    3499             : 
    3500          86 :     if (authwarning)
    3501             :     {
    3502          22 :         printf("\n");
    3503          22 :         pg_log_warning("enabling \"trust\" authentication for local connections");
    3504          22 :         pg_log_warning_hint("You can change this by editing pg_hba.conf or using the option -A, or "
    3505             :                             "--auth-local and --auth-host, the next time you run initdb.");
    3506             :     }
    3507             : 
    3508          86 :     if (!noinstructions)
    3509             :     {
    3510             :         /*
    3511             :          * Build up a shell command to tell the user how to start the server
    3512             :          */
    3513          82 :         start_db_cmd = createPQExpBuffer();
    3514             : 
    3515             :         /* Get directory specification used to start initdb ... */
    3516          82 :         strlcpy(pg_ctl_path, argv[0], sizeof(pg_ctl_path));
    3517          82 :         canonicalize_path(pg_ctl_path);
    3518          82 :         get_parent_directory(pg_ctl_path);
    3519             :         /* ... and tag on pg_ctl instead */
    3520          82 :         join_path_components(pg_ctl_path, pg_ctl_path, "pg_ctl");
    3521             : 
    3522             :         /* Convert the path to use native separators */
    3523          82 :         make_native_path(pg_ctl_path);
    3524             : 
    3525             :         /* path to pg_ctl, properly quoted */
    3526          82 :         appendShellString(start_db_cmd, pg_ctl_path);
    3527             : 
    3528             :         /* add -D switch, with properly quoted data directory */
    3529          82 :         appendPQExpBufferStr(start_db_cmd, " -D ");
    3530          82 :         appendShellString(start_db_cmd, pgdata_native);
    3531             : 
    3532             :         /* add suggested -l switch and "start" command */
    3533             :         /* translator: This is a placeholder in a shell command. */
    3534          82 :         appendPQExpBuffer(start_db_cmd, " -l %s start", _("logfile"));
    3535             : 
    3536          82 :         printf(_("\nSuccess. You can now start the database server using:\n\n"
    3537             :                  "    %s\n\n"),
    3538             :                start_db_cmd->data);
    3539             : 
    3540          82 :         destroyPQExpBuffer(start_db_cmd);
    3541             :     }
    3542             : 
    3543             : 
    3544          86 :     success = true;
    3545          86 :     return 0;
    3546             : }

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