1 /*-------------------------------------------------------------------------
4 * routines to support running postgres in 'bootstrap' mode
5 * bootstrap mode is used to create the initial template database
7 * Portions Copyright (c) 1996-2002, PostgreSQL Global Development Group
8 * Portions Copyright (c) 1994, Regents of the University of California
11 * $Header: /cvsroot/pgsql/src/backend/bootstrap/bootstrap.c,v 1.138 2002/08/17 15:12:06 momjian Exp $
13 *-------------------------------------------------------------------------
25 #define BOOTSTRAP_INCLUDE /* mask out stuff in tcop/tcopprot.h */
27 #include "access/genam.h"
28 #include "access/heapam.h"
29 #include "access/xlog.h"
30 #include "bootstrap/bootstrap.h"
31 #include "catalog/catname.h"
32 #include "catalog/index.h"
33 #include "catalog/pg_type.h"
34 #include "libpq/pqsignal.h"
35 #include "miscadmin.h"
36 #include "storage/ipc.h"
37 #include "storage/proc.h"
38 #include "tcop/tcopprot.h"
39 #include "utils/builtins.h"
40 #include "utils/fmgroids.h"
41 #include "utils/guc.h"
42 #include "utils/lsyscache.h"
43 #include "utils/relcache.h"
46 #define ALLOC(t, c) ((t *) calloc((unsigned)(c), sizeof(t)))
49 extern int Int_yyparse(void);
50 static hashnode *AddStr(char *str, int strlength, int mderef);
51 static Form_pg_attribute AllocateAttribute(void);
52 static bool BootstrapAlreadySeen(Oid id);
53 static int CompHash(char *str, int len);
54 static hashnode *FindStr(char *str, int length, hashnode *mderef);
55 static Oid gettype(char *type);
56 static void cleanup(void);
63 Relation boot_reldesc; /* current relation descriptor */
66 * In the lexical analyzer, we need to get the reference number quickly from
67 * the string, and the string from the reference number. Thus we have
68 * as our data structure a hash table, where the hashing key taken from
69 * the particular string. The hash table is chained. One of the fields
70 * of the hash table node is an index into the array of character pointers.
71 * The unique index number that every string is assigned is simply the
72 * position of its string pointer in the array of string pointers.
75 #define STRTABLESIZE 10000
76 #define HASHTABLESIZE 503
78 /* Hash function numbers */
83 char *strtable[STRTABLESIZE];
84 hashnode *hashtable[HASHTABLESIZE];
86 static int strtable_end = -1; /* Tells us last occupied string space */
89 * Basic information associated with each type. This is used before
92 * XXX several of these input/output functions do catalog scans
93 * (e.g., F_REGPROCIN scans pg_proc). this obviously creates some
94 * order dependencies in the catalog creation process.
98 char name[NAMEDATALEN];
106 static struct typinfo Procid[] = {
107 {"bool", BOOLOID, 0, 1, F_BOOLIN, F_BOOLOUT},
108 {"bytea", BYTEAOID, 0, -1, F_BYTEAIN, F_BYTEAOUT},
109 {"char", CHAROID, 0, 1, F_CHARIN, F_CHAROUT},
110 {"name", NAMEOID, 0, NAMEDATALEN, F_NAMEIN, F_NAMEOUT},
111 {"int2", INT2OID, 0, 2, F_INT2IN, F_INT2OUT},
112 {"int2vector", INT2VECTOROID, 0, INDEX_MAX_KEYS * 2, F_INT2VECTORIN, F_INT2VECTOROUT},
113 {"int4", INT4OID, 0, 4, F_INT4IN, F_INT4OUT},
114 {"regproc", REGPROCOID, 0, 4, F_REGPROCIN, F_REGPROCOUT},
115 {"regclass", REGCLASSOID, 0, 4, F_REGCLASSIN, F_REGCLASSOUT},
116 {"regtype", REGTYPEOID, 0, 4, F_REGTYPEIN, F_REGTYPEOUT},
117 {"text", TEXTOID, 0, -1, F_TEXTIN, F_TEXTOUT},
118 {"oid", OIDOID, 0, 4, F_OIDIN, F_OIDOUT},
119 {"tid", TIDOID, 0, 6, F_TIDIN, F_TIDOUT},
120 {"xid", XIDOID, 0, 4, F_XIDIN, F_XIDOUT},
121 {"cid", CIDOID, 0, 4, F_CIDIN, F_CIDOUT},
122 {"oidvector", OIDVECTOROID, 0, INDEX_MAX_KEYS * 4, F_OIDVECTORIN, F_OIDVECTOROUT},
123 {"smgr", 210, 0, 2, F_SMGRIN, F_SMGROUT},
124 {"_int4", 1007, INT4OID, -1, F_ARRAY_IN, F_ARRAY_OUT},
125 {"_aclitem", 1034, 1033, -1, F_ARRAY_IN, F_ARRAY_OUT}
128 static int n_types = sizeof(Procid) / sizeof(struct typinfo);
133 FormData_pg_type am_typ;
136 static struct typmap **Typ = (struct typmap **) NULL;
137 static struct typmap *Ap = (struct typmap *) NULL;
139 static int Warnings = 0;
140 static char Blanks[MAXATTR];
142 static char *relname; /* current relation name */
144 Form_pg_attribute attrtypes[MAXATTR]; /* points to attribute info */
145 static Datum values[MAXATTR]; /* corresponding attribute values */
146 int numattr; /* number of attributes for cur. rel */
148 static MemoryContext nogc = NULL; /* special no-gc mem context */
154 * At bootstrap time, we first declare all the indices to be built, and
155 * then build them. The IndexList structure stores enough information
156 * to allow us to build the indices after they've been declared.
159 typedef struct _IndexList
164 struct _IndexList *il_next;
167 static IndexList *ILHead = (IndexList *) NULL;
170 /* ----------------------------------------------------------------
172 * ----------------------------------------------------------------
176 * error handling / abort routines
187 usage help for the bootstrap backen
194 " postgres -boot [-d level] [-D datadir] [-F] [-o file] [-x num] dbname\n"
195 " -d 1-5 debug mode\n"
196 " -D datadir data directory\n"
197 " -F turn off fsync\n"
198 " -o file send debug output to file\n"
199 " -x num internal use\n"));
207 BootstrapMain(int argc, char *argv[])
208 /* ----------------------------------------------------------------
209 * The main loop for handling the backend in bootstrap mode
210 * the bootstrap mode is used to initialize the template database
211 * the bootstrap backend doesn't speak SQL, but instead expects
212 * commands in a special bootstrap language.
214 * The arguments passed in to BootstrapMain are the run-time arguments
215 * without the argument '-boot', the caller is required to have
216 * removed -boot from the run-time args
217 * ----------------------------------------------------------------
223 int xlogop = BS_XLOG_NOP;
224 char *potential_DataDir = NULL;
230 MyProcPid = getpid();
233 * Fire up essential subsystems: error and memory management
235 * If we are running under the postmaster, this is done already.
237 if (!IsUnderPostmaster)
243 * process command arguments
246 /* Set defaults, to be overriden by explicit options below */
248 if (!IsUnderPostmaster)
250 InitializeGUCOptions();
251 potential_DataDir = getenv("PGDATA"); /* Null if no PGDATA
255 while ((flag = getopt(argc, argv, "B:d:D:Fo:px:")) != -1)
260 potential_DataDir = optarg;
264 /* Turn on debugging for the bootstrap process. */
265 char *debugstr = palloc(strlen("debug") + strlen(optarg) + 1);
266 sprintf(debugstr, "debug%s", optarg);
267 SetConfigOption("server_min_messages", debugstr,
268 PGC_POSTMASTER, PGC_S_ARGV);
269 SetConfigOption("client_min_messages", debugstr,
270 PGC_POSTMASTER, PGC_S_ARGV);
276 SetConfigOption("fsync", "false", PGC_POSTMASTER, PGC_S_ARGV);
279 StrNCpy(OutputFileName, optarg, MAXPGPATH);
282 xlogop = atoi(optarg);
285 /* indicates fork from postmaster */
288 SetConfigOption("shared_buffers", optarg, PGC_POSTMASTER, PGC_S_ARGV);
296 if (argc - optind != 1)
299 dbName = argv[optind];
303 if (!IsUnderPostmaster)
305 if (!potential_DataDir)
308 gettext("%s does not know where to find the database system data.\n"
309 "You must specify the directory that contains the database system\n"
310 "either by specifying the -D invocation option or by setting the\n"
311 "PGDATA environment variable.\n\n"),
315 SetDataDir(potential_DataDir);
318 /* Validate we have been given a reasonable-looking DataDir */
320 ValidatePgVersion(DataDir);
322 if (IsUnderPostmaster)
325 * Properly accept or ignore signals the postmaster might send us
327 pqsignal(SIGHUP, SIG_IGN);
328 pqsignal(SIGINT, SIG_IGN); /* ignore query-cancel */
329 pqsignal(SIGTERM, die);
330 pqsignal(SIGQUIT, quickdie);
331 pqsignal(SIGALRM, SIG_IGN);
332 pqsignal(SIGPIPE, SIG_IGN);
333 pqsignal(SIGUSR1, SIG_IGN);
334 pqsignal(SIGUSR2, SIG_IGN);
337 * Reset some signals that are accepted by postmaster but not here
339 pqsignal(SIGCHLD, SIG_DFL);
340 pqsignal(SIGTTIN, SIG_DFL);
341 pqsignal(SIGTTOU, SIG_DFL);
342 pqsignal(SIGCONT, SIG_DFL);
343 pqsignal(SIGWINCH, SIG_DFL);
346 * Unblock signals (they were blocked when the postmaster forked
349 PG_SETMASK(&UnBlockSig);
353 /* Set up appropriately for interactive use */
354 pqsignal(SIGHUP, die);
355 pqsignal(SIGINT, die);
356 pqsignal(SIGTERM, die);
357 pqsignal(SIGQUIT, die);
360 * Create lockfile for data directory.
362 if (!CreateDataDirLockFile(DataDir, false))
366 SetProcessingMode(BootstrapProcessing);
367 IgnoreSystemIndexes(true);
376 SetProcessingMode(NormalProcessing);
384 case BS_XLOG_BOOTSTRAP:
389 case BS_XLOG_CHECKPOINT:
390 if (IsUnderPostmaster)
391 InitDummyProcess(); /* needed to get LWLocks */
393 CreateCheckPoint(false);
394 SetSavedRedoRecPtr(); /* pass redo ptr back to postmaster */
395 proc_exit(0); /* done */
397 case BS_XLOG_STARTUP:
399 proc_exit(0); /* done */
401 case BS_XLOG_SHUTDOWN:
403 proc_exit(0); /* done */
406 elog(PANIC, "Unsupported XLOG op %d", xlogop);
410 SetProcessingMode(BootstrapProcessing);
413 * backend initialization
415 InitPostgres(dbName, NULL);
417 for (i = 0; i < MAXATTR; i++)
419 attrtypes[i] = (Form_pg_attribute) NULL;
422 for (i = 0; i < STRTABLESIZE; ++i)
424 for (i = 0; i < HASHTABLESIZE; ++i)
428 * abort processing resumes here
430 if (sigsetjmp(Warn_restart, 1) != 0)
433 AbortCurrentTransaction();
441 * the sed script boot.sed renamed yyparse to Int_yyparse for the
442 * bootstrap parser to avoid conflicts with the normal SQL parser
446 SetProcessingMode(NormalProcessing);
447 CreateCheckPoint(true);
448 SetProcessingMode(BootstrapProcessing);
450 /* clean up processing */
451 StartTransactionCommand();
454 /* not reached, here to make compiler happy */
459 /* ----------------------------------------------------------------
460 * MANUAL BACKEND INTERACTIVE INTERFACE COMMANDS
461 * ----------------------------------------------------------------
469 boot_openrel(char *relname)
477 if (strlen(relname) >= NAMEDATALEN - 1)
478 relname[NAMEDATALEN - 1] = '\0';
480 if (Typ == (struct typmap **) NULL)
482 rel = heap_openr(TypeRelationName, NoLock);
483 scan = heap_beginscan(rel, SnapshotNow, 0, (ScanKey) NULL);
485 while ((tup = heap_getnext(scan, ForwardScanDirection)) != NULL)
488 app = Typ = ALLOC(struct typmap *, i + 1);
490 *app++ = ALLOC(struct typmap, 1);
491 *app = (struct typmap *) NULL;
492 scan = heap_beginscan(rel, SnapshotNow, 0, (ScanKey) NULL);
494 while ((tup = heap_getnext(scan, ForwardScanDirection)) != NULL)
496 AssertTupleDescHasOid(rel->rd_att);
497 (*app)->am_oid = HeapTupleGetOid(tup);
498 memcpy((char *) &(*app)->am_typ,
499 (char *) GETSTRUCT(tup),
500 sizeof((*app)->am_typ));
504 heap_close(rel, NoLock);
507 if (boot_reldesc != NULL)
510 elog(DEBUG3, "open relation %s, attrsize %d", relname ? relname : "(null)",
511 (int) ATTRIBUTE_TUPLE_SIZE);
513 boot_reldesc = heap_openr(relname, NoLock);
514 numattr = boot_reldesc->rd_rel->relnatts;
515 for (i = 0; i < numattr; i++)
517 if (attrtypes[i] == NULL)
518 attrtypes[i] = AllocateAttribute();
519 memmove((char *) attrtypes[i],
520 (char *) boot_reldesc->rd_att->attrs[i],
521 ATTRIBUTE_TUPLE_SIZE);
524 Form_pg_attribute at = attrtypes[i];
526 elog(DEBUG3, "create attribute %d name %s len %d num %d type %u",
527 i, NameStr(at->attname), at->attlen, at->attnum,
544 if (strcmp(RelationGetRelationName(boot_reldesc), name) != 0)
545 elog(ERROR, "closerel: close of '%s' when '%s' was expected",
546 name, relname ? relname : "(null)");
549 elog(ERROR, "closerel: close of '%s' before any relation was opened",
553 if (boot_reldesc == NULL)
554 elog(ERROR, "no open relation to close");
557 elog(DEBUG3, "close relation %s", relname ? relname : "(null)");
558 heap_close(boot_reldesc, NoLock);
559 boot_reldesc = (Relation) NULL;
568 * define a <field,type> pair
569 * if there are n fields in a relation to be created, this routine
570 * will be called n times
574 DefineAttr(char *name, char *type, int attnum)
579 if (boot_reldesc != NULL)
581 elog(LOG, "warning: no open relations allowed with 'create' command");
585 if (attrtypes[attnum] == (Form_pg_attribute) NULL)
586 attrtypes[attnum] = AllocateAttribute();
587 MemSet(attrtypes[attnum], 0, ATTRIBUTE_TUPLE_SIZE);
589 namestrcpy(&attrtypes[attnum]->attname, name);
590 elog(DEBUG3, "column %s %s", NameStr(attrtypes[attnum]->attname), type);
591 attrtypes[attnum]->attnum = 1 + attnum; /* fillatt */
593 typeoid = gettype(type);
595 if (Typ != (struct typmap **) NULL)
597 attrtypes[attnum]->atttypid = Ap->am_oid;
598 attlen = attrtypes[attnum]->attlen = Ap->am_typ.typlen;
599 attrtypes[attnum]->attbyval = Ap->am_typ.typbyval;
600 attrtypes[attnum]->attstorage = Ap->am_typ.typstorage;
601 attrtypes[attnum]->attalign = Ap->am_typ.typalign;
605 attrtypes[attnum]->atttypid = Procid[typeoid].oid;
606 attlen = attrtypes[attnum]->attlen = Procid[typeoid].len;
609 * Cheat like mad to fill in these items from the length only.
610 * This only has to work for types that appear in Procid[].
615 attrtypes[attnum]->attbyval = true;
616 attrtypes[attnum]->attstorage = 'p';
617 attrtypes[attnum]->attalign = 'c';
620 attrtypes[attnum]->attbyval = true;
621 attrtypes[attnum]->attstorage = 'p';
622 attrtypes[attnum]->attalign = 's';
625 attrtypes[attnum]->attbyval = true;
626 attrtypes[attnum]->attstorage = 'p';
627 attrtypes[attnum]->attalign = 'i';
630 attrtypes[attnum]->attbyval = false;
631 attrtypes[attnum]->attstorage = 'x';
632 attrtypes[attnum]->attalign = 'i';
635 /* TID and fixed-length arrays, such as oidvector */
636 attrtypes[attnum]->attbyval = false;
637 attrtypes[attnum]->attstorage = 'p';
638 attrtypes[attnum]->attalign = 'i';
642 attrtypes[attnum]->attcacheoff = -1;
643 attrtypes[attnum]->atttypmod = -1;
645 * Mark as "not null" if type is fixed-width and prior columns are too.
646 * This corresponds to case where column can be accessed directly via
647 * C struct declaration.
653 for (i = 0; i < attnum; i++)
655 if (attrtypes[i]->attlen <= 0)
659 attrtypes[attnum]->attnotnull = true;
667 * If objectid is not zero, it is a specific OID to assign to the tuple.
668 * Otherwise, an OID will be assigned (if necessary) by heap_insert.
672 InsertOneTuple(Oid objectid)
678 elog(DEBUG3, "inserting row oid %u, %d columns", objectid, numattr);
680 tupDesc = CreateTupleDesc(numattr, attrtypes);
681 tupDesc->tdhasoid = BoolToHasOid(RelationGetForm(boot_reldesc)->relhasoids);
682 tuple = heap_formtuple(tupDesc, values, Blanks);
684 if (objectid != (Oid) 0)
686 AssertTupleDescHasOid(tupDesc);
687 HeapTupleSetOid(tuple, objectid);
689 pfree(tupDesc); /* just free's tupDesc, not the attrtypes */
690 simple_heap_insert(boot_reldesc, tuple);
691 heap_freetuple(tuple);
692 elog(DEBUG3, "row inserted");
695 * Reset blanks for next tuple
697 for (i = 0; i < numattr; i++)
706 InsertOneValue(char *value, int i)
712 AssertArg(i >= 0 || i < MAXATTR);
714 elog(DEBUG3, "inserting column %d value '%s'", i, value);
716 if (Typ != (struct typmap **) NULL)
720 elog(DEBUG3, "Typ != NULL");
722 while (*app && (*app)->am_oid != boot_reldesc->rd_att->attrs[i]->atttypid)
727 elog(FATAL, "unable to find atttypid %u in Typ list",
728 boot_reldesc->rd_att->attrs[i]->atttypid);
730 values[i] = OidFunctionCall3(ap->am_typ.typinput,
731 CStringGetDatum(value),
732 ObjectIdGetDatum(ap->am_typ.typelem),
734 prt = DatumGetCString(OidFunctionCall3(ap->am_typ.typoutput,
736 ObjectIdGetDatum(ap->am_typ.typelem),
738 elog(DEBUG3, " -> %s", prt);
743 for (typeindex = 0; typeindex < n_types; typeindex++)
745 if (Procid[typeindex].oid == attrtypes[i]->atttypid)
748 if (typeindex >= n_types)
749 elog(ERROR, "type oid %u not found", attrtypes[i]->atttypid);
750 elog(DEBUG3, "Typ == NULL, typeindex = %u", typeindex);
751 values[i] = OidFunctionCall3(Procid[typeindex].inproc,
752 CStringGetDatum(value),
753 ObjectIdGetDatum(Procid[typeindex].elem),
755 prt = DatumGetCString(OidFunctionCall3(Procid[typeindex].outproc,
757 ObjectIdGetDatum(Procid[typeindex].elem),
759 elog(DEBUG3, " -> %s", prt);
762 elog(DEBUG3, "inserted");
772 elog(DEBUG3, "inserting column %d NULL", i);
773 Assert(i >= 0 || i < MAXATTR);
774 values[i] = PointerGetDatum(NULL);
778 #define MORE_THAN_THE_NUMBER_OF_CATALOGS 256
781 BootstrapAlreadySeen(Oid id)
783 static Oid seenArray[MORE_THAN_THE_NUMBER_OF_CATALOGS];
784 static int nseen = 0;
790 for (i = 0; i < nseen; i++)
792 if (seenArray[i] == id)
800 seenArray[nseen] = id;
813 static int beenhere = 0;
819 elog(FATAL, "Memory manager fault: cleanup called twice.\n");
822 if (boot_reldesc != NULL)
824 CommitTransactionCommand();
831 * NB: this is really ugly; it will return an integer index into Procid[],
832 * and not an OID at all, until the first reference to a type not known in
833 * Procid[]. At that point it will read and cache pg_type in the Typ array,
834 * and subsequently return a real OID (and set the global pointer Ap to
835 * point at the found row in Typ). So caller must check whether Typ is
836 * still NULL to determine what the return value is!
848 if (Typ != (struct typmap **) NULL)
850 for (app = Typ; *app != (struct typmap *) NULL; app++)
852 if (strncmp(NameStr((*app)->am_typ.typname), type, NAMEDATALEN) == 0)
855 return (*app)->am_oid;
861 for (i = 0; i < n_types; i++)
863 if (strncmp(type, Procid[i].name, NAMEDATALEN) == 0)
866 elog(DEBUG3, "external type: %s", type);
867 rel = heap_openr(TypeRelationName, NoLock);
868 scan = heap_beginscan(rel, SnapshotNow, 0, (ScanKey) NULL);
870 while ((tup = heap_getnext(scan, ForwardScanDirection)) != NULL)
873 app = Typ = ALLOC(struct typmap *, i + 1);
875 *app++ = ALLOC(struct typmap, 1);
876 *app = (struct typmap *) NULL;
877 scan = heap_beginscan(rel, SnapshotNow, 0, (ScanKey) NULL);
879 while ((tup = heap_getnext(scan, ForwardScanDirection)) != NULL)
881 AssertTupleDescHasOid(rel->rd_att);
882 (*app)->am_oid = HeapTupleGetOid(tup);
883 memmove((char *) &(*app++)->am_typ,
884 (char *) GETSTRUCT(tup),
885 sizeof((*app)->am_typ));
888 heap_close(rel, NoLock);
889 return gettype(type);
891 elog(ERROR, "Error: unknown type '%s'.\n", type);
893 /* not reached, here to make compiler happy */
901 static Form_pg_attribute
902 AllocateAttribute(void)
904 Form_pg_attribute attribute = (Form_pg_attribute) malloc(ATTRIBUTE_TUPLE_SIZE);
906 if (!PointerIsValid(attribute))
907 elog(FATAL, "AllocateAttribute: malloc failed");
908 MemSet(attribute, 0, ATTRIBUTE_TUPLE_SIZE);
915 * XXX arrays of "basetype" are always "_basetype".
916 * this is an evil hack inherited from rel. 3.1.
917 * XXX array dimension is thrown away because we
918 * don't support fixed-dimension arrays. again,
921 * the string passed in must have a '[' character in it
923 * the string returned is a pointer to static storage and should NOT
924 * be freed by the CALLER.
928 MapArrayTypeName(char *s)
932 static char newStr[NAMEDATALEN]; /* array type names < NAMEDATALEN
935 if (s == NULL || s[0] == '\0')
940 for (i = 0; i < NAMEDATALEN - 1 && s[i] != '['; i++, j++)
950 * returns the string table position of the identifier
951 * passed to it. We add it to the table if we can't find it.
955 EnterString(char *str)
962 node = FindStr(str, len, 0);
967 node = AddStr(str, len, 0);
974 * when given an idnum into the 'string-table' return the string
975 * associated with the idnum
979 LexIDStr(int ident_num)
981 return strtable[ident_num];
988 * Compute a hash function for a given string. We look at the first,
989 * the last, and the middle character of a string to try to get spread
990 * the strings out. The function is rather arbitrary, except that we
991 * are mod'ing by a prime number.
995 CompHash(char *str, int len)
999 result = (NUM * str[0] + NUMSQR * str[len - 1] + NUMCUBE * str[(len - 1) / 2]);
1001 return result % HASHTABLESIZE;
1008 * This routine looks for the specified string in the hash
1009 * table. It returns a pointer to the hash node found,
1010 * or NULL if the string is not in the table.
1014 FindStr(char *str, int length, hashnode *mderef)
1018 node = hashtable[CompHash(str, length)];
1019 while (node != NULL)
1022 * We must differentiate between string constants that might have
1023 * the same value as a identifier and the identifier itself.
1025 if (!strcmp(str, strtable[node->strnum]))
1027 return node; /* no need to check */
1032 /* Couldn't find it in the list */
1039 * This function adds the specified string, along with its associated
1040 * data, to the hash table and the string table. We return the node
1041 * so that the calling routine can find out the unique id that AddStr
1042 * has assigned to this string.
1046 AddStr(char *str, int strlength, int mderef)
1054 if (++strtable_end == STRTABLESIZE)
1056 /* Error, string table overflow, so we Punt */
1058 "There are too many string constants and identifiers for the compiler to handle.");
1064 * Some of the utilites (eg, define type, create relation) assume that
1065 * the string they're passed is a NAMEDATALEN. We get array bound
1066 * read violations from purify if we don't allocate at least
1067 * NAMEDATALEN bytes for strings of this sort. Because we're lazy, we
1068 * allocate at least NAMEDATALEN bytes all the time.
1071 if ((len = strlength + 1) < NAMEDATALEN)
1074 strtable[strtable_end] = malloc((unsigned) len);
1075 strcpy(strtable[strtable_end], str);
1077 /* Now put a node in the hash table */
1079 newnode = (hashnode *) malloc(sizeof(hashnode) * 1);
1080 newnode->strnum = strtable_end;
1081 newnode->next = NULL;
1083 /* Find out where it goes */
1085 hashresult = CompHash(str, strlength);
1086 if (hashtable[hashresult] == NULL)
1087 hashtable[hashresult] = newnode;
1089 { /* There is something in the list */
1090 trail = hashtable[hashresult];
1092 while (temp != NULL)
1097 trail->next = newnode;
1105 * index_register() -- record an index that has been set up for building
1108 * At bootstrap time, we define a bunch of indices on system catalogs.
1109 * We postpone actually building the indices until just before we're
1110 * finished with initialization, however. This is because more classes
1111 * and indices may be defined, and we want to be sure that all of them
1112 * are present in the index.
1115 index_register(Oid heap,
1117 IndexInfo *indexInfo)
1120 MemoryContext oldcxt;
1123 * XXX mao 10/31/92 -- don't gc index reldescs, associated info at
1124 * bootstrap time. we'll declare the indices now, but want to create
1129 nogc = AllocSetContextCreate((MemoryContext) NULL,
1131 ALLOCSET_DEFAULT_MINSIZE,
1132 ALLOCSET_DEFAULT_INITSIZE,
1133 ALLOCSET_DEFAULT_MAXSIZE);
1135 oldcxt = MemoryContextSwitchTo(nogc);
1137 newind = (IndexList *) palloc(sizeof(IndexList));
1138 newind->il_heap = heap;
1139 newind->il_ind = ind;
1140 newind->il_info = (IndexInfo *) palloc(sizeof(IndexInfo));
1142 memcpy(newind->il_info, indexInfo, sizeof(IndexInfo));
1143 /* predicate will likely be null, but may as well copy it */
1144 newind->il_info->ii_Predicate = (List *)
1145 copyObject(indexInfo->ii_Predicate);
1147 newind->il_next = ILHead;
1150 MemoryContextSwitchTo(oldcxt);
1156 for (; ILHead != (IndexList *) NULL; ILHead = ILHead->il_next)
1161 heap = heap_open(ILHead->il_heap, NoLock);
1162 ind = index_open(ILHead->il_ind);
1163 index_build(heap, ind, ILHead->il_info);
1166 * In normal processing mode, index_build would close the heap and
1167 * index, but in bootstrap mode it will not.
1171 * All of the rest of this routine is needed only because in
1172 * bootstrap processing we don't increment xact id's. The normal
1173 * DefineIndex code replaces a pg_class tuple with updated info
1174 * including the relhasindex flag (which we need to have updated).
1175 * Unfortunately, there are always two indices defined on each
1176 * catalog causing us to update the same pg_class tuple twice for
1177 * each catalog getting an index during bootstrap resulting in the
1178 * ghost tuple problem (see heap_update). To get around this we
1179 * change the relhasindex field ourselves in this routine keeping
1180 * track of what catalogs we already changed so that we don't
1181 * modify those tuples twice. The normal mechanism for updating
1182 * pg_class is disabled during bootstrap.
1186 if (!BootstrapAlreadySeen(RelationGetRelid(heap)))
1187 UpdateStats(RelationGetRelid(heap), 0);
1189 /* XXX Probably we ought to close the heap and index here? */