Fixed everything in and surrounding createdb and dropdb to make it more

error-proof. Rearranged some old code and removed dead sections.
This commit is contained in:
Peter Eisentraut 2000-01-13 18:26:18 +00:00
parent bfa3b59d25
commit 46a28f1b14
14 changed files with 473 additions and 842 deletions

View File

@ -7,7 +7,7 @@
*
*
* IDENTIFICATION
* $Header: /cvsroot/pgsql/src/backend/catalog/aclchk.c,v 1.32 1999/11/24 16:52:31 momjian Exp $
* $Header: /cvsroot/pgsql/src/backend/catalog/aclchk.c,v 1.33 2000/01/13 18:26:04 petere Exp $
*
* NOTES
* See acl.h.
@ -358,23 +358,6 @@ pg_aclcheck(char *relname, char *usename, AclMode mode)
usename);
id = (AclId) ((Form_pg_shadow) GETSTRUCT(tuple))->usesysid;
/*
* for the 'pg_database' relation, check the usecreatedb field before
* checking normal permissions
*/
if (strcmp(DatabaseRelationName, relname) == 0 &&
(((Form_pg_shadow) GETSTRUCT(tuple))->usecreatedb))
{
/*
* note that even though the user can now append to the
* pg_database table, there is still additional permissions
* checking in dbcommands.c
*/
if ((mode & ACL_WR) || (mode & ACL_AP))
return ACLCHECK_OK;
}
/*
* Deny anyone permission to update a system catalog unless
* pg_shadow.usecatupd is set. (This is to let superusers protect

View File

@ -7,102 +7,155 @@
*
*
* IDENTIFICATION
* $Header: /cvsroot/pgsql/src/backend/commands/dbcommands.c,v 1.48 1999/12/20 01:11:37 tgl Exp $
* $Header: /cvsroot/pgsql/src/backend/commands/dbcommands.c,v 1.49 2000/01/13 18:26:05 petere Exp $
*
*-------------------------------------------------------------------------
*/
#include <signal.h>
#include <sys/stat.h>
#include <unistd.h>
#include "postgres.h"
#include "commands/dbcommands.h"
#include <errno.h>
#include <fcntl.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <sys/stat.h>
#include <sys/types.h>
#include "access/heapam.h"
#include "access/htup.h"
#include "access/skey.h"
#include "access/xact.h"
#include "catalog/catname.h"
#include "catalog/indexing.h"
#include "catalog/pg_database.h"
#include "catalog/pg_shadow.h"
#include "commands/comment.h"
#include "commands/dbcommands.h"
#include "miscadmin.h"
#include "storage/sinval.h"
#include "tcop/tcopprot.h"
#include "storage/bufmgr.h" /* for DropBuffers */
#include "storage/fd.h" /* for closeAllVfds */
#include "storage/sinval.h" /* for DatabaseHasActiveBackends */
#include "utils/builtins.h"
#include "utils/elog.h"
#include "utils/palloc.h"
#include "utils/rel.h"
#include "utils/syscache.h"
/* non-export function prototypes */
static void check_permissions(char *command, char *dbpath, char *dbname,
Oid *dbIdP, int4 *userIdP);
static HeapTuple get_pg_dbtup(char *command, char *dbname, Relation dbrel);
static void stop_vacuum(char *dbpath, char *dbname);
static bool
get_user_info(const char *name, int4 *use_sysid, bool *use_super, bool *use_createdb);
static bool
get_db_info(const char *name, char *dbpath, Oid *dbIdP, int4 *ownerIdP);
/*
* CREATE DATABASE
*/
void
createdb(char *dbname, char *dbpath, int encoding, CommandDest dest)
createdb(const char *dbname, const char *dbpath, int encoding)
{
Oid db_id;
char buf[2 * MAXPGPATH + 100];
char *loc;
int4 user_id;
char buf[MAXPGPATH + 100];
char *lp,
loc[MAXPGPATH];
bool use_super, use_createdb;
/* no single quotes in dbname */
if (strchr(dbname, '\'') != NULL)
elog(ERROR, "Single quotes are not allowed in database names.");
if (dbpath && strchr(dbpath, '\'') != NULL)
elog(ERROR, "Single quotes are not allowed in database paths.");
Relation pg_database_rel;
HeapTuple tuple;
TupleDesc pg_database_dsc;
/*
* If this call returns, the database does not exist and we're allowed
* to create databases.
*/
check_permissions("createdb", dbpath, dbname, &db_id, &user_id);
Datum new_record[Natts_pg_database];
char new_record_nulls[Natts_pg_database] = { ' ', ' ', ' ', ' ' };
/* close virtual file descriptors so we can do system() calls */
if (!get_user_info(GetPgUserName(), &user_id, &use_super, &use_createdb))
elog(ERROR, "Current user name is invalid.");
if (!use_createdb && !use_super)
elog(ERROR, "CREATE DATABASE: Permission denied.");
if (get_db_info(dbname, NULL, NULL, NULL))
elog(ERROR, "CREATE DATABASE: Database \"%s\" already exists.", dbname);
/* close virtual file descriptors so the kernel has more available for
the system() calls */
closeAllVfds();
/* Make directory name for this new database */
if ((dbpath != NULL) && (strcmp(dbpath, dbname) != 0))
{
if (*(dbpath + strlen(dbpath) - 1) == SEP_CHAR)
*(dbpath + strlen(dbpath) - 1) = '\0';
snprintf(loc, sizeof(loc), "%s%c%s", dbpath, SEP_CHAR, dbname);
}
else
strcpy(loc, dbname);
/* Generate directory name for the new database */
if (dbpath == NULL)
dbpath = dbname;
lp = ExpandDatabasePath(loc);
loc = ExpandDatabasePath(dbpath);
if (lp == NULL)
elog(ERROR, "The path '%s' is invalid.\n"
"This may be due to a missing environment variable"
" on the server.", loc);
/* no single quotes in expanded path */
if (strchr(lp, '\'') != NULL)
elog(ERROR, "Single quotes are not allowed in database paths.");
if (loc == NULL)
elog(ERROR,
"The database path '%s' is invalid. "
"This may be due to a character that is not allowed or because the chosen "
"path isn't permitted for databases.", dbpath);
/* don't call this in a transaction block */
if (IsTransactionBlock())
elog(ERROR, "createdb: May not be called in a transaction block.");
elog(ERROR, "CREATE DATABASE: May not be called in a transaction block.");
else
BeginTransactionBlock();
snprintf(buf, sizeof(buf),
"INSERT INTO pg_database (datname, datdba, encoding, datpath)"
" VALUES ('%s', '%d', '%d', '%s')", dbname, user_id, encoding, loc);
/*
* Insert a new tuple into pg_database
*/
pg_database_rel = heap_openr(DatabaseRelationName, AccessExclusiveLock);
pg_database_dsc = RelationGetDescr(pg_database_rel);
pg_exec_query_dest(buf, dest, false);
/* Form tuple */
new_record[Anum_pg_database_datname-1] = NameGetDatum(dbname);
new_record[Anum_pg_database_datdba-1] = Int32GetDatum(user_id);
new_record[Anum_pg_database_encoding-1] = Int32GetDatum(encoding);
new_record[Anum_pg_database_datpath-1] = PointerGetDatum(textin((char *)dbpath));
if (mkdir(lp, S_IRWXU) != 0) {
tuple = heap_formtuple(pg_database_dsc, new_record, new_record_nulls);
/*
* Update table
*/
heap_insert(pg_database_rel, tuple);
/*
* Update indexes (there aren't any currently)
*/
#ifdef Num_pg_database_indices
if (RelationGetForm(pg_database_rel)->relhasindex) {
Relation idescs[Num_pg_database_indices];
CatalogOpenIndices(Num_pg_database_indices,
Name_pg_database_indices, idescs);
CatalogIndexInsert(idescs, Num_pg_database_indices, pg_database_rel,
tuple);
CatalogCloseIndices(Num_pg_database_indices, idescs);
}
#endif
heap_close(pg_database_rel, NoLock);
/* Copy the template database to the new location */
if (mkdir(loc, S_IRWXU) != 0) {
UserAbortTransactionBlock();
elog(ERROR, "Unable to create database directory '%s'.", lp);
elog(ERROR, "CREATE DATABASE: Unable to create database directory '%s': %s", loc, strerror(errno));
}
snprintf(buf, sizeof(buf), "%s %s%cbase%ctemplate1%c* '%s'",
COPY_CMD, DataDir, SEP_CHAR, SEP_CHAR, SEP_CHAR, lp);
snprintf(buf, sizeof(buf), "cp %s%cbase%ctemplate1%c* '%s'",
DataDir, SEP_CHAR, SEP_CHAR, SEP_CHAR, loc);
if (system(buf) != 0) {
rmdir(lp);
int ret;
snprintf(buf, sizeof(buf), "rm -rf '%s'", loc);
ret = system(buf);
UserAbortTransactionBlock();
elog(ERROR, "Could not initialize database directory.");
if (ret == 0)
elog(ERROR, "CREATE DATABASE: Could not initialize database directory.");
else
elog(ERROR, "CREATE DATABASE: Could not initialize database directory. Delete failed as well.");
}
if (IsTransactionBlock())
@ -111,45 +164,56 @@ createdb(char *dbname, char *dbpath, int encoding, CommandDest dest)
/*
* DROP DATABASE
*/
void
dropdb(char *dbname, CommandDest dest)
dropdb(const char *dbname)
{
int4 user_id;
int4 user_id, db_owner;
bool use_super;
Oid db_id;
char *path,
dbpath[MAXPGPATH],
buf[MAXPGPATH + 100];
Relation pgdbrel;
HeapScanDesc pgdbscan;
ScanKeyData key;
HeapTuple tup;
/* no single quotes in dbname */
if (strchr(dbname, '\'') != NULL)
elog(ERROR, "Single quotes are not allowed in database names.");
AssertArg(dbname);
/*
* If this call returns, the database exists and we're allowed to
* remove it.
*/
check_permissions("dropdb", dbpath, dbname, &db_id, &user_id);
if (strcmp(dbname, "template1") == 0)
elog(ERROR, "DROP DATABASE: May not be executed on the template database.");
/* do as much checking as we can... */
if (!OidIsValid(db_id))
elog(FATAL, "pg_database instance has an invalid OID");
if (strcmp(dbname, DatabaseName) == 0)
elog(ERROR, "DROP DATABASE: Cannot be executed on the currently open database.");
if (!get_user_info(GetPgUserName(), &user_id, &use_super, NULL))
elog(ERROR, "Current user name is invalid.");
if (!get_db_info(dbname, dbpath, &db_id, &db_owner))
elog(ERROR, "DROP DATABASE: Database \"%s\" does not exist.", dbname);
if (user_id != db_owner && !use_super)
elog(ERROR, "DROP DATABASE: Permission denied.");
/* close virtual file descriptors so the kernel has more available for
the system() calls */
closeAllVfds();
path = ExpandDatabasePath(dbpath);
if (path == NULL)
elog(ERROR, "The path '%s' is invalid.\n"
"This may be due to a missing environment variable"
" on the server.", path);
/* stop the vacuum daemon (dead code...) */
stop_vacuum(dbpath, dbname);
elog(ERROR,
"The database path '%s' is invalid. "
"This may be due to a character that is not allowed or because the chosen "
"path isn't permitted for databases.", path);
/* don't call this in a transaction block */
if (IsTransactionBlock())
elog(ERROR, "dropdb: May not be called in a transaction block.");
elog(ERROR, "DROP DATABASE: May not be called in a transaction block.");
else
BeginTransactionBlock();
@ -170,8 +234,7 @@ dropdb(char *dbname, CommandDest dest)
if (DatabaseHasActiveBackends(db_id)) {
heap_close(pgdbrel, AccessExclusiveLock);
UserAbortTransactionBlock();
elog(ERROR, "Database '%s' has running backends, can't drop it.",
dbname);
elog(ERROR, "DROP DATABASE: Database \"%s\" is being accessed by other users.", dbname);
}
/*
@ -187,19 +250,16 @@ dropdb(char *dbname, CommandDest dest)
{
heap_close(pgdbrel, AccessExclusiveLock);
UserAbortTransactionBlock();
elog(ERROR, "Database '%s', OID %u, not found in pg_database",
dbname, db_id);
/* This error should never come up since the existence of the
database is checked earlier */
elog(ERROR, "DROP DATABASE: Database \"%s\" doesn't exist despite earlier reports to the contrary.",
dbname);
}
/*** Delete any comments associated with the database ***/
/* Delete any comments associated with the database */
DeleteComments(db_id);
/*
* Houston, we have launch commit...
*
* Remove the database's tuple from pg_database.
*/
/* Remove the database's tuple from pg_database */
heap_delete(pgdbrel, &tup->t_self, NULL);
heap_endscan(pgdbscan);
@ -222,7 +282,7 @@ dropdb(char *dbname, CommandDest dest)
*/
snprintf(buf, sizeof(buf), "rm -rf '%s'", path);
if (system(buf)!=0)
elog(NOTICE, "The database directory '%s' could not be removed.", path);
elog(NOTICE, "DROP DATABASE: The database directory '%s' could not be removed.", path);
if (IsTransactionBlock())
EndTransactionBlock();
@ -230,186 +290,103 @@ dropdb(char *dbname, CommandDest dest)
static HeapTuple
get_pg_dbtup(char *command, char *dbname, Relation dbrel)
/*
* Helper functions
*/
static bool
get_db_info(const char *name, char *dbpath, Oid *dbIdP, int4 *ownerIdP)
{
HeapTuple dbtup;
HeapTuple tup;
HeapScanDesc scan;
Relation relation;
HeapTuple tuple;
ScanKeyData scanKey;
HeapScanDesc scan;
AssertArg(name);
relation = heap_openr(DatabaseRelationName, AccessExclusiveLock/*???*/);
ScanKeyEntryInitialize(&scanKey, 0, Anum_pg_database_datname,
F_NAMEEQ, NameGetDatum(dbname));
F_NAMEEQ, NameGetDatum(name));
scan = heap_beginscan(dbrel, 0, SnapshotNow, 1, &scanKey);
scan = heap_beginscan(relation, 0, SnapshotNow, 1, &scanKey);
if (!HeapScanIsValid(scan))
elog(ERROR, "%s: cannot begin scan of pg_database", command);
elog(ERROR, "Cannot begin scan of %s.", DatabaseRelationName);
/*
* since we want to return the tuple out of this proc, and we're going
* to close the relation, copy the tuple and return the copy.
*/
tup = heap_getnext(scan, 0);
tuple = heap_getnext(scan, 0);
if (HeapTupleIsValid(tup))
dbtup = heap_copytuple(tup);
if (HeapTupleIsValid(tuple))
{
text *tmptext;
bool isnull;
/* oid of the database */
if (dbIdP)
*dbIdP = tuple->t_data->t_oid;
/* uid of the owner */
if (ownerIdP)
{
*ownerIdP = (int4) heap_getattr(tuple,
Anum_pg_database_datdba,
RelationGetDescr(relation),
&isnull);
if (isnull)
*ownerIdP = -1; /* hopefully no one has that id already ;) */
}
/* database path (as registered in pg_database) */
if (dbpath)
{
tmptext = (text *) heap_getattr(tuple,
Anum_pg_database_datpath,
RelationGetDescr(relation),
&isnull);
if (!isnull)
{
Assert(VARSIZE(tmptext) - VARHDRSZ < MAXPGPATH);
strncpy(dbpath, VARDATA(tmptext), VARSIZE(tmptext) - VARHDRSZ);
*(dbpath + VARSIZE(tmptext) - VARHDRSZ) = '\0';
}
else
strcpy(dbpath, "");
}
}
else
dbtup = tup;
{
if (dbIdP)
*dbIdP = InvalidOid;
}
heap_endscan(scan);
return dbtup;
/* We will keep the lock on the relation until end of transaction. */
heap_close(relation, NoLock);
return HeapTupleIsValid(tuple);
}
/*
* check_permissions() -- verify that the user is permitted to do this.
*
* If the user is not allowed to carry out this operation, this routine
* elog(ERROR, ...)s, which will abort the xact. As a side effect, the
* user's pg_user tuple OID is returned in userIdP and the target database's
* OID is returned in dbIdP.
*/
static void
check_permissions(char *command,
char *dbpath,
char *dbname,
Oid *dbIdP,
int4 *userIdP)
static bool
get_user_info(const char * name, int4 *use_sysid, bool *use_super, bool *use_createdb)
{
Relation dbrel;
HeapTuple dbtup,
utup;
int4 dbowner = 0;
char use_createdb;
bool dbfound;
bool use_super;
char *userName;
text *dbtext;
char path[MAXPGPATH];
HeapTuple utup;
userName = GetPgUserName();
AssertArg(name);
utup = SearchSysCacheTuple(SHADOWNAME,
PointerGetDatum(userName),
PointerGetDatum(name),
0, 0, 0);
Assert(utup);
*userIdP = ((Form_pg_shadow) GETSTRUCT(utup))->usesysid;
use_super = ((Form_pg_shadow) GETSTRUCT(utup))->usesuper;
use_createdb = ((Form_pg_shadow) GETSTRUCT(utup))->usecreatedb;
/* Check to make sure user has permission to use createdb */
if (!use_createdb)
{
elog(ERROR, "user '%s' is not allowed to create/drop databases",
userName);
}
if (!HeapTupleIsValid(utup))
return false;
/* Make sure we are not mucking with the template database */
if (!strcmp(dbname, "template1"))
elog(ERROR, "%s: cannot be executed on the template database", command);
if (use_sysid)
*use_sysid = ((Form_pg_shadow) GETSTRUCT(utup))->usesysid;
if (use_super)
*use_super = ((Form_pg_shadow) GETSTRUCT(utup))->usesuper;
if (use_createdb)
*use_createdb = ((Form_pg_shadow) GETSTRUCT(utup))->usecreatedb;
/* Check to make sure database is not the currently open database */
if (!strcmp(dbname, DatabaseName))
elog(ERROR, "%s: cannot be executed on an open database", command);
/* Check to make sure database is owned by this user */
/*
* Acquire exclusive lock on pg_database from the beginning, even though
* we only need read access right here, to avoid potential deadlocks
* from upgrading our lock later. (Is this still necessary? Could we
* use something weaker than exclusive lock?)
*/
dbrel = heap_openr(DatabaseRelationName, AccessExclusiveLock);
dbtup = get_pg_dbtup(command, dbname, dbrel);
dbfound = HeapTupleIsValid(dbtup);
if (dbfound)
{
dbowner = (int4) heap_getattr(dbtup,
Anum_pg_database_datdba,
RelationGetDescr(dbrel),
(char *) NULL);
*dbIdP = dbtup->t_data->t_oid;
dbtext = (text *) heap_getattr(dbtup,
Anum_pg_database_datpath,
RelationGetDescr(dbrel),
(char *) NULL);
strncpy(path, VARDATA(dbtext), (VARSIZE(dbtext) - VARHDRSZ));
*(path + VARSIZE(dbtext) - VARHDRSZ) = '\0';
}
else
*dbIdP = InvalidOid;
/* We will keep the lock on dbrel until end of transaction. */
heap_close(dbrel, NoLock);
/*
* Now be sure that the user is allowed to do this.
*/
if (dbfound && !strcmp(command, "createdb"))
{
elog(ERROR, "createdb: database '%s' already exists", dbname);
}
else if (!dbfound && !strcmp(command, "dropdb"))
{
elog(ERROR, "dropdb: database '%s' does not exist", dbname);
}
else if (dbfound && !strcmp(command, "dropdb")
&& dbowner != *userIdP && use_super == false)
{
elog(ERROR, "%s: database '%s' is not owned by you", command, dbname);
}
if (dbfound && !strcmp(command, "dropdb"))
strcpy(dbpath, path);
} /* check_permissions() */
/*
* stop_vacuum -- stop the vacuum daemon on the database, if one is running.
*
* This is currently dead code, since we don't *have* vacuum daemons.
* If you want to re-enable it, think about the interlock against deleting
* a database out from under running backends, in dropdb() above.
*/
static void
stop_vacuum(char *dbpath, char *dbname)
{
#ifdef NOT_USED
char filename[MAXPGPATH];
FILE *fp;
int pid;
if (strchr(dbpath, SEP_CHAR) != 0)
{
snprintf(filename, sizeof(filename), "%s%cbase%c%s%c%s.vacuum",
DataDir, SEP_CHAR, SEP_CHAR, dbname, SEP_CHAR, dbname);
}
else
snprintf(filename, sizeof(filename), "%s%c%s.vacuum",
dbpath, SEP_CHAR, dbname);
#ifndef __CYGWIN32__
if ((fp = AllocateFile(filename, "r")) != NULL)
#else
if ((fp = AllocateFile(filename, "rb")) != NULL)
#endif
{
fscanf(fp, "%d", &pid);
FreeFile(fp);
if (kill(pid, SIGKILLDAEMON1) < 0)
{
elog(ERROR, "can't kill vacuum daemon (pid %d) on '%s'",
pid, dbname);
}
}
#endif
return true;
}

View File

@ -10,7 +10,7 @@
*
*
* IDENTIFICATION
* $Header: /cvsroot/pgsql/src/backend/parser/gram.y,v 2.123 1999/12/16 17:24:14 momjian Exp $
* $Header: /cvsroot/pgsql/src/backend/parser/gram.y,v 2.124 2000/01/13 18:26:07 petere Exp $
*
* HISTORY
* AUTHOR DATE MAJOR EVENT
@ -131,7 +131,8 @@ static Node *doNegate(Node *n);
RuleActionStmtOrEmpty, ConstraintsSetStmt,
CreateGroupStmt, AlterGroupStmt, DropGroupStmt
%type <str> opt_database1, opt_database2, location, encoding
%type <str> createdb_opt_location
%type <ival> createdb_opt_encoding
%type <ival> opt_lock, lock_type
%type <boolean> opt_lmode
@ -156,7 +157,7 @@ static Node *doNegate(Node *n);
all_Op, MathOp, opt_name, opt_unique,
OptUseOp, opt_class, SpecialRuleRelation
%type <str> opt_level
%type <str> opt_level, opt_encoding
%type <str> privileges, operation_commalist, grantee
%type <chr> operation, TriggerOneEvent
@ -709,7 +710,7 @@ VariableSetStmt: SET ColId TO var_value
n->value = $5;
$$ = (Node *) n;
}
| SET NAMES encoding
| SET NAMES opt_encoding
{
#ifdef MULTIBYTE
VariableSetStmt *n = makeNode(VariableSetStmt);
@ -717,7 +718,7 @@ VariableSetStmt: SET ColId TO var_value
n->value = $3;
$$ = (Node *) n;
#else
elog(ERROR, "SET NAMES is not supported");
elog(ERROR, "SET NAMES is not supported.");
#endif
}
;
@ -735,6 +736,11 @@ zone_value: Sconst { $$ = $1; }
| LOCAL { $$ = NULL; }
;
opt_encoding: Sconst { $$ = $1; }
| DEFAULT { $$ = NULL; }
| /*EMPTY*/ { $$ = NULL; }
;
VariableShowStmt: SHOW ColId
{
VariableShowStmt *n = makeNode(VariableShowStmt);
@ -2508,31 +2514,24 @@ LoadStmt: LOAD file_name
/*****************************************************************************
*
* QUERY:
* createdb dbname
* CREATE DATABASE
*
*
*****************************************************************************/
CreatedbStmt: CREATE DATABASE database_name WITH opt_database1 opt_database2
{
CreatedbStmt *n = makeNode(CreatedbStmt);
if ($5 == NULL && $6 == NULL) {
elog(ERROR, "CREATE DATABASE WITH requires at least an option");
}
CreatedbStmt: CREATE DATABASE database_name WITH createdb_opt_location createdb_opt_encoding
{
CreatedbStmt *n;
if ($5 == NULL && $6 == -1)
elog(ERROR, "CREATE DATABASE WITH requires at least one option.");
n = makeNode(CreatedbStmt);
n->dbname = $3;
n->dbpath = $5;
#ifdef MULTIBYTE
if ($6 != NULL) {
n->encoding = pg_char_to_encoding($6);
if (n->encoding < 0) {
elog(ERROR, "invalid encoding name %s", $6);
}
} else {
n->encoding = GetTemplateEncoding();
}
n->encoding = $6;
#else
if ($6 != NULL)
elog(ERROR, "WITH ENCODING is not supported");
n->encoding = 0;
#endif
$$ = (Node *)n;
@ -2551,28 +2550,57 @@ CreatedbStmt: CREATE DATABASE database_name WITH opt_database1 opt_database2
}
;
opt_database1: LOCATION '=' location { $$ = $3; }
createdb_opt_location: LOCATION '=' Sconst { $$ = $3; }
| LOCATION '=' DEFAULT { $$ = NULL; }
| /*EMPTY*/ { $$ = NULL; }
;
opt_database2: ENCODING '=' encoding { $$ = $3; }
| /*EMPTY*/ { $$ = NULL; }
;
createdb_opt_encoding:
ENCODING '=' Sconst
{
#ifdef MULTIBYTE
int i;
i = pg_char_to_encoding($3);
if (i == -1)
elog(ERROR, "%s is not a valid encoding name.", $3);
$$ = i;
#else
elog(ERROR, "WITH ENCODING is not supported.");
#endif
}
| ENCODING '=' Iconst
{
#ifdef MULTIBYTE
if (!pg_get_encent_by_encoding($3))
elog(ERROR, "%d is not a valid encoding code.", $3);
$$ = $3;
#else
elog(ERROR, "WITH ENCODING is not supported.");
#endif
}
| ENCODING '=' DEFAULT
{
#ifdef MULTIBYTE
$$ = GetTemplateEncoding();
#else
$$ = -1;
#endif
}
| /*EMPTY*/
{
#ifdef MULTIBYTE
$$ = GetTemplateEncoding();
#else
$$= -1;
#endif
}
;
location: Sconst { $$ = $1; }
| DEFAULT { $$ = NULL; }
| /*EMPTY*/ { $$ = NULL; }
;
encoding: Sconst { $$ = $1; }
| DEFAULT { $$ = NULL; }
| /*EMPTY*/ { $$ = NULL; }
;
/*****************************************************************************
*
* QUERY:
* dropdb dbname
* DROP DATABASE
*
*
*****************************************************************************/

View File

@ -7,7 +7,7 @@
*
*
* IDENTIFICATION
* $Header: /cvsroot/pgsql/src/backend/storage/smgr/md.c,v 1.61 2000/01/10 06:30:51 inoue Exp $
* $Header: /cvsroot/pgsql/src/backend/storage/smgr/md.c,v 1.62 2000/01/13 18:26:09 petere Exp $
*
*-------------------------------------------------------------------------
*/
@ -623,8 +623,6 @@ mdblindwrt(char *dbstr,
/* user table? then put in user database area... */
else if (dbid == MyDatabaseId)
{
extern char *DatabasePath;
path = (char *) palloc(strlen(DatabasePath) + 2 * sizeof(NameData) + 2 + nchars);
if (segno == 0)
sprintf(path, "%s%c%s", DatabasePath, SEP_CHAR, relstr);
@ -663,8 +661,6 @@ mdblindwrt(char *dbstr,
/* user table? then put in user database area... */
else if (dbid == MyDatabaseId)
{
extern char *DatabasePath;
path = (char *) palloc(strlen(DatabasePath) + 2 * sizeof(NameData) + 2);
sprintf(path, "%s%c%s", DatabasePath, SEP_CHAR, relstr);
}

View File

@ -9,7 +9,7 @@
*
*
* IDENTIFICATION
* $Header: /cvsroot/pgsql/src/backend/tcop/utility.c,v 1.76 1999/12/20 01:19:58 tgl Exp $
* $Header: /cvsroot/pgsql/src/backend/tcop/utility.c,v 1.77 2000/01/13 18:26:10 petere Exp $
*
*-------------------------------------------------------------------------
*/
@ -592,7 +592,7 @@ ProcessUtility(Node *parsetree,
PS_SET_STATUS(commandTag = "CREATE DATABASE");
CHECK_IF_ABORTED();
createdb(stmt->dbname, stmt->dbpath, stmt->encoding, dest);
createdb(stmt->dbname, stmt->dbpath, stmt->encoding);
}
break;
@ -602,7 +602,7 @@ ProcessUtility(Node *parsetree,
PS_SET_STATUS(commandTag = "DROP DATABASE");
CHECK_IF_ABORTED();
dropdb(stmt->dbname, dest);
dropdb(stmt->dbname);
}
break;

View File

@ -7,10 +7,12 @@
*
*
* IDENTIFICATION
* $Header: /cvsroot/pgsql/src/backend/utils/init/miscinit.c,v 1.38 2000/01/09 12:15:57 ishii Exp $
* $Header: /cvsroot/pgsql/src/backend/utils/init/miscinit.c,v 1.39 2000/01/13 18:26:11 petere Exp $
*
*-------------------------------------------------------------------------
*/
#include "postgres.h"
#include <sys/param.h>
#include <sys/types.h>
#include <signal.h>
@ -19,177 +21,21 @@
#include <unistd.h>
#include <grp.h>
#include <pwd.h>
#include <stdlib.h>
#include "postgres.h"
#include "catalog/catname.h"
#include "catalog/pg_shadow.h"
#include "miscadmin.h"
#include "utils/syscache.h"
/*
* EnableAbortEnvVarName
* Enables system abort iff set to a non-empty string in environment.
*/
#define EnableAbortEnvVarName "POSTGRESABORT"
extern char *getenv(const char *name); /* XXX STDLIB */
/* from globals.c */
extern char *UserName;
#ifdef CYR_RECODE
unsigned char RecodeForwTable[128];
unsigned char RecodeBackTable[128];
#endif
ProcessingMode Mode = InitProcessing;
/*
* Define USE_ENVIRONMENT to get PGDATA, etc. from environment variables.
* This is the default on UNIX platforms.
*/
#define USE_ENVIRONMENT
/* ----------------------------------------------------------------
* some of the 19 ways to leave postgres
* ----------------------------------------------------------------
*/
/*
* ExitPostgres
* Exit POSTGRES with a status code.
*
* Note:
* This function never returns.
* ...
*
* Side effects:
* ...
*
* Exceptions:
* none
*/
void
ExitPostgres(ExitStatus status)
{
proc_exit(status);
}
/*
* AbortPostgres
* Abort POSTGRES dumping core.
*
* Note:
* This function never returns.
* ...
*
* Side effects:
* Core is dumped iff EnableAbortEnvVarName is set to a non-empty string.
* ...
*
* Exceptions:
* none
*/
#ifdef NOT_USED
void
AbortPostgres()
{
char *abortValue = getenv(EnableAbortEnvVarName);
if (PointerIsValid(abortValue) && abortValue[0] != '\0')
abort();
else
proc_exit(FatalExitStatus);
}
/* ----------------
* StatusBackendExit
* ----------------
*/
void
StatusBackendExit(int status)
{
/* someday, do some real cleanup and then call the LISP exit */
/* someday, call StatusPostmasterExit if running without postmaster */
proc_exit(status);
}
/* ----------------
* StatusPostmasterExit
* ----------------
*/
void
StatusPostmasterExit(int status)
{
/* someday, do some real cleanup and then call the LISP exit */
proc_exit(status);
}
#endif
/* ----------------------------------------------------------------
* processing mode support stuff (used to be in pmod.c)
* ----------------------------------------------------------------
*/
static ProcessingMode Mode = InitProcessing;
/*
* IsBootstrapProcessingMode
* True iff processing mode is BootstrapProcessing.
*/
bool
IsBootstrapProcessingMode()
{
return (bool) (Mode == BootstrapProcessing);
}
/*
* IsInitProcessingMode
* True iff processing mode is InitProcessing.
*/
bool
IsInitProcessingMode()
{
return (bool) (Mode == InitProcessing);
}
/*
* IsNormalProcessingMode
* True iff processing mode is NormalProcessing.
*/
bool
IsNormalProcessingMode()
{
return (bool) (Mode == NormalProcessing);
}
/*
* SetProcessingMode
* Sets mode of processing as specified.
*
* Exceptions:
* BadArg if called with invalid mode.
*
* Note:
* Mode is InitProcessing before the first time this is called.
*/
void
SetProcessingMode(ProcessingMode mode)
{
AssertArg(mode == BootstrapProcessing || mode == InitProcessing ||
mode == NormalProcessing);
Mode = mode;
}
ProcessingMode
GetProcessingMode()
{
return Mode;
}
/* ----------------------------------------------------------------
* database path / name support stuff
@ -197,22 +43,26 @@ GetProcessingMode()
*/
void
SetDatabasePath(char *path)
SetDatabasePath(const char *path)
{
/* use malloc since this is done before memory contexts are set up */
if (DatabasePath)
free(DatabasePath);
DatabasePath = malloc(strlen(path) + 1);
strcpy(DatabasePath, path);
free(DatabasePath);
/* use strdup since this is done before memory contexts are set up */
if (path)
{
DatabasePath = strdup(path);
AssertState(DatabasePath);
}
}
void
SetDatabaseName(char *name)
SetDatabaseName(const char *name)
{
if (DatabaseName)
free(DatabaseName);
DatabaseName = malloc(strlen(name) + 1);
strcpy(DatabaseName, name);
free(DatabaseName);
if (name)
{
DatabaseName = strdup(name);
AssertState(DatabaseName);
}
}
#ifndef MULTIBYTE
@ -431,7 +281,7 @@ static Oid UserId = InvalidOid;
int
GetUserId()
{
Assert(OidIsValid(UserId));
AssertState(OidIsValid(UserId));
return UserId;
}
@ -441,7 +291,7 @@ SetUserId()
HeapTuple userTup;
char *userName;
Assert(!OidIsValid(UserId));/* only once */
AssertState(!OidIsValid(UserId));/* only once */
/*
* Don't do scans if we're bootstrapping, none of the system catalogs

View File

@ -7,22 +7,8 @@
*
*
* IDENTIFICATION
* $Header: /cvsroot/pgsql/src/backend/utils/init/postinit.c,v 1.54 1999/12/22 00:07:16 inoue Exp $
* $Header: /cvsroot/pgsql/src/backend/utils/init/postinit.c,v 1.55 2000/01/13 18:26:11 petere Exp $
*
* NOTES
* InitPostgres() is the function called from PostgresMain
* which does all non-trival initialization, mainly by calling
* all the other initialization functions. InitPostgres()
* is only used within the "postgres" backend and so that routine
* is in tcop/postgres.c InitPostgres() is needed in cinterface.a
* because things like the bootstrap backend program need it. Hence
* you find that in this file...
*
* If you feel the need to add more initialization code, it should be
* done in InitPostgres() or someplace lower. Do not start
* putting stuff in PostgresMain - if you do then someone
* will have to clean it up later, and it's not going to be me!
* -cim 10/3/90
*
*-------------------------------------------------------------------------
*/
@ -55,193 +41,13 @@
void BaseInit(void);
static void VerifySystemDatabase(void);
static void VerifyMyDatabase(void);
static void ReverifyMyDatabase(char *name);
static void ReverifyMyDatabase(const char *name);
static void InitCommunication(void);
static void InitMyDatabaseInfo(char *name);
static void InitUserid(void);
static IPCKey PostgresIpcKey;
/* ----------------------------------------------------------------
* InitPostgres support
* ----------------------------------------------------------------
*/
/*** InitPostgres support ***/
/* --------------------------------
* InitMyDatabaseInfo() -- Find and record the OID of the database we are
* to open.
*
* The database's oid forms half of the unique key for the system
* caches and lock tables. We therefore want it initialized before
* we open any relations, since opening relations puts things in the
* cache. To get around this problem, this code opens and scans the
* pg_database relation by hand.
*
* This algorithm relies on the fact that first attribute in the
* pg_database relation schema is the database name. It also knows
* about the internal format of tuples on disk and the length of
* the datname attribute. It knows the location of the pg_database
* file.
* Actually, the code looks as though it is using the pg_database
* tuple definition to locate the database name, so the above statement
* seems to be no longer correct. - thomas 1997-11-01
*
* This code is called from InitPostgres(), before we chdir() to the
* local database directory and before we open any relations.
* Used to be called after the chdir(), but we now want to confirm
* the location of the target database using pg_database info.
* - thomas 1997-11-01
* --------------------------------
*/
static void
InitMyDatabaseInfo(char *name)
{
char *path,
myPath[MAXPGPATH];
SetDatabaseName(name);
GetRawDatabaseInfo(name, &MyDatabaseId, myPath);
if (!OidIsValid(MyDatabaseId))
elog(FATAL,
"Database %s does not exist in %s",
DatabaseName,
DatabaseRelationName);
path = ExpandDatabasePath(myPath);
SetDatabasePath(path);
} /* InitMyDatabaseInfo() */
/*
* DoChdirAndInitDatabaseNameAndPath
* Set current directory to the database directory for the database
* named <name>.
* Also set global variables DatabasePath and DatabaseName to those
* values. Also check for proper version of database system and
* database. Exit program via elog() if anything doesn't check out.
*
* Arguments:
* Path and name are invalid if it invalid as a string.
* Path is "badly formatted" if it is not a string containing a path
* to a writable directory.
* Name is "badly formatted" if it contains more than 16 characters or if
* it is a bad file name (e.g., it contains a '/' or an 8-bit character).
*
* Exceptions:
* BadState if called more than once.
* BadArg if both path and name are "badly formatted" or invalid.
* BadArg if path and name are both "inconsistent" and valid.
*
* This routine is inappropriate in bootstrap mode, since the directories
* and version files need not exist yet if we're in bootstrap mode.
*/
static void
VerifySystemDatabase()
{
char *reason;
/* Failure reason returned by some function. NULL if no failure */
int fd;
char errormsg[MAXPGPATH+100];
errormsg[0] = '\0';
#ifndef __CYGWIN32__
if ((fd = open(DataDir, O_RDONLY, 0)) == -1)
#else
if ((fd = open(DataDir, O_RDONLY | O_DIROPEN, 0)) == -1)
#endif
snprintf(errormsg, sizeof(errormsg),
"Database system does not exist. "
"PGDATA directory '%s' not found.\n\tNormally, you "
"create a database system by running initdb.",
DataDir);
else
{
close(fd);
ValidatePgVersion(DataDir, &reason);
if (reason != NULL)
snprintf(errormsg, sizeof(errormsg),
"InitPostgres could not validate that the database"
" system version is compatible with this level of"
" Postgres.\n\tYou may need to run initdb to create"
" a new database system.\n\t%s", reason);
}
if (errormsg[0] != '\0')
elog(FATAL, errormsg);
/* Above does not return */
} /* VerifySystemDatabase() */
static void
VerifyMyDatabase()
{
const char *name;
const char *myPath;
/* Failure reason returned by some function. NULL if no failure */
char *reason;
int fd;
char errormsg[MAXPGPATH+100];
name = DatabaseName;
myPath = DatabasePath;
#ifndef __CYGWIN32__
if ((fd = open(myPath, O_RDONLY, 0)) == -1)
#else
if ((fd = open(myPath, O_RDONLY | O_DIROPEN, 0)) == -1)
#endif
snprintf(errormsg, sizeof(errormsg),
"Database '%s' does not exist."
"\n\tWe know this because the directory '%s' does not exist."
"\n\tYou can create a database with the SQL command"
" CREATE DATABASE.\n\tTo see what databases exist,"
" look at the subdirectories of '%s/base/'.",
name, myPath, DataDir);
else
{
close(fd);
ValidatePgVersion(myPath, &reason);
if (reason != NULL)
snprintf(errormsg, sizeof(errormsg),
"InitPostgres could not validate that the database"
" version is compatible with this level of Postgres"
"\n\teven though the database system as a whole"
" appears to be at a compatible level."
"\n\tYou may need to recreate the database with SQL"
" commands DROP DATABASE and CREATE DATABASE."
"\n\t%s", reason);
else
{
/*
* The directories and PG_VERSION files are in order.
*/
int rc; /* return code from some function we call */
#ifdef FILEDEBUG
printf("Try changing directory for database %s to %s\n", name, myPath);
#endif
rc = chdir(myPath);
if (rc < 0)
snprintf(errormsg, sizeof(errormsg),
"InitPostgres unable to change "
"current directory to '%s', errno = %s (%d).",
myPath, strerror(errno), errno);
else
errormsg[0] = '\0';
}
}
if (errormsg[0] != '\0')
elog(FATAL, errormsg);
/* Above does not return */
} /* VerifyMyDatabase() */
/* --------------------------------
* ReverifyMyDatabase
@ -266,7 +72,7 @@ VerifyMyDatabase()
* --------------------------------
*/
static void
ReverifyMyDatabase(char *name)
ReverifyMyDatabase(const char *name)
{
Relation pgdbrel;
HeapScanDesc pgdbscan;
@ -324,18 +130,7 @@ ReverifyMyDatabase(char *name)
heap_close(pgdbrel, AccessShareLock);
}
/* --------------------------------
* InitUserid
*
* initializes crap associated with the user id.
* --------------------------------
*/
static void
InitUserid()
{
setuid(geteuid());
SetUserId();
}
/* --------------------------------
* InitCommunication
@ -416,6 +211,8 @@ InitCommunication()
}
}
/* --------------------------------
* InitPostgres
* Initialize POSTGRES.
@ -431,14 +228,9 @@ int lockingOff = 0; /* backend -L switch */
/*
*/
void
InitPostgres(char *name) /* database name */
InitPostgres(const char *dbname)
{
bool bootstrap; /* true if BootstrapProcessing */
/*
* See if we're running in BootstrapProcessing mode
*/
bootstrap = IsBootstrapProcessingMode();
bool bootstrap = IsBootstrapProcessingMode();
/* ----------------
* initialize the backend local portal stack used by
@ -449,9 +241,7 @@ InitPostgres(char *name) /* database name */
*/
be_portalinit();
/*
* initialize the local buffer manager
*/
/* initialize the local buffer manager */
InitLocalBuffer();
#ifndef XLOG
@ -459,32 +249,72 @@ InitPostgres(char *name) /* database name */
on_shmem_exit(FlushBufferPool, (caddr_t) NULL);
#endif
SetDatabaseName(dbname);
/* ----------------
* initialize the database id used for system caches and lock tables
* ----------------
*/
if (bootstrap)
{
SetDatabasePath(ExpandDatabasePath(name));
SetDatabaseName(name);
SetDatabasePath(ExpandDatabasePath(dbname));
LockDisable(true);
}
else
{
VerifySystemDatabase();
InitMyDatabaseInfo(name);
VerifyMyDatabase();
char *reason;
char *fullpath,
datpath[MAXPGPATH];
/* Verify if DataDir is ok */
if (access(DataDir, F_OK) == -1)
elog(FATAL, "Database system not found. Data directory '%s' does not exist.",
DataDir);
ValidatePgVersion(DataDir, &reason);
if (reason != NULL)
elog(FATAL, reason);
/*-----------------
* Find oid and path of the database we're about to open. Since we're
* not yet up and running we have to use the hackish GetRawDatabaseInfo.
*
* OLD COMMENTS:
* The database's oid forms half of the unique key for the system
* caches and lock tables. We therefore want it initialized before
* we open any relations, since opening relations puts things in the
* cache. To get around this problem, this code opens and scans the
* pg_database relation by hand.
*/
GetRawDatabaseInfo(dbname, &MyDatabaseId, datpath);
if (!OidIsValid(MyDatabaseId))
elog(FATAL,
"Database \"%s\" does not exist in the system catalog.",
dbname);
fullpath = ExpandDatabasePath(datpath);
if (!fullpath)
elog(FATAL, "Database path could not be resolved.");
/* Verify the database path */
if (access(fullpath, F_OK) == -1)
elog(FATAL, "Database \"%s\" does not exist. The data directory '%s' is missing.",
dbname, fullpath);
ValidatePgVersion(fullpath, &reason);
if (reason != NULL)
elog(FATAL, "%s", reason);
if(chdir(fullpath) == -1)
elog(FATAL, "Unable to change directory to '%s': %s", fullpath, strerror(errno));
SetDatabasePath(fullpath);
}
/*
* Code after this point assumes we are in the proper directory!
*
* So, how do we implement alternate locations for databases? There are
* two possible locations for tables and we need to look in
* DataDir/pg_database to find the true location of an individual
* database. We can brute-force it as done in InitMyDatabaseInfo(), or
* we can be patient and wait until we open pg_database gracefully.
* Will try that, but may not work... - thomas 1997-11-01
*/
/*
@ -549,12 +379,14 @@ InitPostgres(char *name) /* database name */
/* start a new transaction here before access to db */
if (!bootstrap)
StartTransactionCommand();
/*
* Set ourselves to the proper user id and figure out our postgres
* user id. If we ever add security so that we check for valid
* postgres users, we might do it here.
*/
InitUserid();
setuid(geteuid());
SetUserId();
if (lockingOff)
LockDisable(true);
@ -565,7 +397,7 @@ InitPostgres(char *name) /* database name */
* infrastructure is up, so just do it at the end.
*/
if (!bootstrap)
ReverifyMyDatabase(name);
ReverifyMyDatabase(dbname);
}
void

View File

@ -7,100 +7,43 @@
*
*
* IDENTIFICATION
* $Header: /cvsroot/pgsql/src/backend/utils/misc/Attic/database.c,v 1.33 1999/12/16 22:19:55 wieck Exp $
* $Header: /cvsroot/pgsql/src/backend/utils/misc/Attic/database.c,v 1.34 2000/01/13 18:26:13 petere Exp $
*
*-------------------------------------------------------------------------
*/
#include <unistd.h>
#include <fcntl.h>
#include "postgres.h"
#include <errno.h>
#include <fcntl.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include "access/xact.h"
#include "catalog/catname.h"
#include "catalog/pg_database.h"
#include "miscadmin.h"
#include "utils/syscache.h"
#ifdef NOT_USED
/* GetDatabaseInfo()
* Pull database information from pg_database.
/*
* ExpandDatabasePath resolves a proposed database path (obtained from
* pg_database.datpath) to a full absolute path for further consumption.
* NULL means an error, which the caller should process. One reason for
* such an error would be an absolute alternative path when no absolute
* paths are alllowed.
*/
int
GetDatabaseInfo(char *name, int4 *owner, char *path)
{
Oid dbowner,
dbid;
char dbpath[MAXPGPATH];
text *dbtext;
Relation dbrel;
HeapTuple dbtup;
HeapTuple tup;
HeapScanDesc scan;
ScanKeyData scanKey;
dbrel = heap_openr(DatabaseRelationName, AccessShareLock);
ScanKeyEntryInitialize(&scanKey, 0, Anum_pg_database_datname,
F_NAMEEQ, NameGetDatum(name));
scan = heap_beginscan(dbrel, 0, SnapshotNow, 1, &scanKey);
if (!HeapScanIsValid(scan))
elog(ERROR, "GetDatabaseInfo: cannot begin scan of %s", DatabaseRelationName);
/*
* Since we're going to close the relation, copy the tuple.
*/
tup = heap_getnext(scan, 0);
if (HeapTupleIsValid(tup))
dbtup = heap_copytuple(tup);
else
dbtup = tup;
heap_endscan(scan);
if (!HeapTupleIsValid(dbtup))
{
elog(NOTICE, "GetDatabaseInfo: %s entry not found %s",
DatabaseRelationName, name);
heap_close(dbrel, AccessShareLock);
return TRUE;
}
dbowner = (Oid) heap_getattr(dbtup,
Anum_pg_database_datdba,
RelationGetDescr(dbrel),
(char *) NULL);
dbid = dbtup->t_oid;
dbtext = (text *) heap_getattr(dbtup,
Anum_pg_database_datpath,
RelationGetDescr(dbrel),
(char *) NULL);
memcpy(dbpath, VARDATA(dbtext), (VARSIZE(dbtext) - VARHDRSZ));
*(dbpath + (VARSIZE(dbtext) - VARHDRSZ)) = '\0';
heap_close(dbrel, AccessShareLock);
owner = palloc(sizeof(Oid));
*owner = dbowner;
path = pstrdup(dbpath); /* doesn't do the right thing! */
return FALSE;
} /* GetDatabaseInfo() */
#endif
char *
ExpandDatabasePath(char *dbpath)
ExpandDatabasePath(const char *dbpath)
{
char buf[MAXPGPATH];
char *cp;
char *envvar;
const char *cp;
int len;
AssertArg(dbpath);
Assert(DataDir);
if (strlen(dbpath) >= MAXPGPATH)
return NULL; /* ain't gonna fit nohow */
@ -120,17 +63,14 @@ ExpandDatabasePath(char *dbpath)
/* path delimiter somewhere? then has leading environment variable */
else if ((cp = strchr(dbpath, SEP_CHAR)) != NULL)
{
const char *envvar;
len = cp - dbpath;
strncpy(buf, dbpath, len);
buf[len] = '\0';
envvar = getenv(buf);
/*
* problem getting environment variable? let calling routine
* handle it
*/
if (envvar == NULL)
return envvar;
return NULL;
snprintf(buf, sizeof(buf), "%s%cbase%c%s",
envvar, SEP_CHAR, SEP_CHAR, (cp + 1));
@ -142,10 +82,29 @@ ExpandDatabasePath(char *dbpath)
DataDir, SEP_CHAR, SEP_CHAR, dbpath);
}
/* check for illegal characters in dbpath */
for(cp = buf; *cp; cp++)
{
/* The following characters will not be allowed anywhere in the database
path. (Do not include the slash here.) */
char illegal_dbpath_chars[] =
"\001\002\003\004\005\006\007\010"
"\011\012\013\014\015\016\017\020"
"\021\022\023\024\025\026\027\030"
"\031\032\033\034\035\036\037"
"'.";
const char *cx;
for (cx = illegal_dbpath_chars; *cx; cx++)
if (*cp == *cx)
return NULL;
}
return pstrdup(buf);
} /* ExpandDatabasePath() */
/* --------------------------------
* GetRawDatabaseInfo() -- Find the OID and path of the database.
*
@ -161,10 +120,9 @@ ExpandDatabasePath(char *dbpath)
* --------------------------------
*/
void
GetRawDatabaseInfo(char *name, Oid *db_id, char *path)
GetRawDatabaseInfo(const char *name, Oid *db_id, char *path)
{
int dbfd;
int fileflags;
int nbytes;
int max,
i;
@ -174,16 +132,15 @@ GetRawDatabaseInfo(char *name, Oid *db_id, char *path)
char *dbfname;
Form_pg_database tup_db;
dbfname = (char *) palloc(strlen(DataDir) + strlen("pg_database") + 2);
sprintf(dbfname, "%s%cpg_database", DataDir, SEP_CHAR);
fileflags = O_RDONLY;
dbfname = (char *) palloc(strlen(DataDir) + strlen(DatabaseRelationName) + 2);
sprintf(dbfname, "%s%c%s", DataDir, SEP_CHAR, DatabaseRelationName);
#ifndef __CYGWIN32__
if ((dbfd = open(dbfname, O_RDONLY, 0)) < 0)
#else
if ((dbfd = open(dbfname, O_RDONLY | O_BINARY, 0)) < 0)
#endif
elog(FATAL, "Cannot open %s", dbfname);
elog(FATAL, "cannot open %s: %s", dbfname, strerror(errno));
pfree(dbfname);

View File

@ -7,7 +7,7 @@
*
*
* IDENTIFICATION
* $Header: /cvsroot/pgsql/src/backend/utils/mmgr/Attic/palloc.c,v 1.15 1999/10/23 03:13:24 tgl Exp $
* $Header: /cvsroot/pgsql/src/backend/utils/mmgr/Attic/palloc.c,v 1.16 2000/01/13 18:26:14 petere Exp $
*
*-------------------------------------------------------------------------
*/
@ -29,7 +29,7 @@
*/
char *
pstrdup(char *string)
pstrdup(const char *string)
{
char *nstr;
int len;

View File

@ -7,7 +7,7 @@
*
* Copyright (c) 1994, Regents of the University of California
*
* $Id: c.h,v 1.62 1999/12/20 00:51:21 tgl Exp $
* $Id: c.h,v 1.63 2000/01/13 18:26:15 petere Exp $
*
*-------------------------------------------------------------------------
*/
@ -767,7 +767,6 @@ extern char *vararg_format(const char *fmt,...);
/* These are for things that are one way on Unix and another on NT */
#define NULL_DEV "/dev/null"
#define COPY_CMD "cp"
#define SEP_CHAR '/'
/* defines for dynamic linking on Win32 platform */

View File

@ -6,23 +6,14 @@
*
* Copyright (c) 1994, Regents of the University of California
*
* $Id: dbcommands.h,v 1.11 1999/12/10 03:56:06 momjian Exp $
* $Id: dbcommands.h,v 1.12 2000/01/13 18:26:16 petere Exp $
*
*-------------------------------------------------------------------------
*/
#ifndef DBCOMMANDS_H
#define DBCOMMANDS_H
#include <signal.h>
#include "tcop/dest.h"
/*
* Originally from tmp/daemon.h. The functions declared in daemon.h does not
* exist; hence removed. -- AY 7/29/94
*/
#define SIGKILLDAEMON1 SIGTERM
extern void createdb(char *dbname, char *dbpath, int encoding, CommandDest);
extern void dropdb(char *dbname, CommandDest);
extern void createdb(const char *dbname, const char *dbpath, int encoding);
extern void dropdb(const char *dbname);
#endif /* DBCOMMANDS_H */

View File

@ -11,7 +11,7 @@
*
* Copyright (c) 1994, Regents of the University of California
*
* $Id: miscadmin.h,v 1.46 2000/01/09 12:19:27 ishii Exp $
* $Id: miscadmin.h,v 1.47 2000/01/13 18:26:15 petere Exp $
*
* NOTES
* some of the information in this file will be moved to
@ -47,6 +47,8 @@ extern long MyCancelKey;
extern char OutputFileName[];
extern char *UserName;
/*
* done in storage/backendid.h for now.
*
@ -110,13 +112,12 @@ extern char *DatabaseName;
extern char *DatabasePath;
/* in utils/misc/database.c */
extern void GetRawDatabaseInfo(char *name, Oid *db_id, char *path);
extern int GetDatabaseInfo(char *name, int4 *owner, char *path);
extern char *ExpandDatabasePath(char *path);
extern void GetRawDatabaseInfo(const char *name, Oid *db_id, char *path);
extern char *ExpandDatabasePath(const char *path);
/* now in utils/init/miscinit.c */
extern void SetDatabaseName(char *name);
extern void SetDatabasePath(char *path);
extern void SetDatabaseName(const char *name);
extern void SetDatabasePath(const char *path);
/* even if MB is not enabled, this function is neccesary
* since pg_proc.h does have.
@ -184,16 +185,27 @@ typedef int16 ExitStatus;
extern bool PostgresIsInitialized;
extern void InitPostgres(char *name);
extern void InitPostgres(const char *dbname);
/* in miscinit.c */
extern void ExitPostgres(ExitStatus status);
/* one of the ways to get out of here */
#define ExitPostgres(status) proc_exec(status)
/* processing mode support stuff */
extern ProcessingMode Mode;
#define IsBootstrapProcessingMode() ((bool)(Mode == BootstrapProcessing))
#define IsInitProcessingMode() ((bool)(Mode == InitProcessing))
#define IsNormalProcessingMode() ((bool)(Mode == NormalProcessing))
#define SetProcessingMode(mode) \
do { \
AssertArg(mode == BootstrapProcessing || mode == InitProcessing || \
mode == NormalProcessing); \
Mode = mode; \
} while(0)
#define GetProcessingMode() Mode
extern bool IsBootstrapProcessingMode(void);
extern bool IsInitProcessingMode(void);
extern bool IsNormalProcessingMode(void);
extern void SetProcessingMode(ProcessingMode mode);
extern ProcessingMode GetProcessingMode(void);
/*
* "postmaster.pid" is a file containing postmaster's pid, being

View File

@ -6,7 +6,7 @@
*
* Copyright (c) 1994, Regents of the University of California
*
* $Id: elog.h,v 1.13 1999/09/27 15:48:12 vadim Exp $
* $Id: elog.h,v 1.14 2000/01/13 18:26:17 petere Exp $
*
*-------------------------------------------------------------------------
*/
@ -22,7 +22,13 @@
#define LOG DEBUG
#define NOIND (-3) /* debug message, don't indent as far */
#ifndef __GNUC__
extern void elog(int lev, const char *fmt, ...);
#else
/* This extension allows gcc to check the format string for consistency with
the supplied arguments. */
extern void elog(int lev, const char *fmt, ...) __attribute__ ((format (printf, 2, 3)));
#endif
#ifndef PG_STANDALONE
extern int DebugFileOpen(void);

View File

@ -6,7 +6,7 @@
*
* Copyright (c) 1994, Regents of the University of California
*
* $Id: palloc.h,v 1.10 1999/07/14 01:20:30 momjian Exp $
* $Id: palloc.h,v 1.11 2000/01/13 18:26:18 petere Exp $
*
*-------------------------------------------------------------------------
*/
@ -32,6 +32,6 @@
#endif /* PALLOC_IS_MALLOC */
/* like strdup except uses palloc */
extern char *pstrdup(char *pointer);
extern char *pstrdup(const char *pointer);
#endif /* PALLOC_H */