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Commit7d1f2f8

Browse files
author
Thomas G. Lockhart
committed
Support alternate database locations.
1 parentd98f2f9 commit7d1f2f8

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8 files changed

+260
-241
lines changed

8 files changed

+260
-241
lines changed

‎src/backend/parser/dbcommands.c

Lines changed: 99 additions & 23 deletions
Original file line numberDiff line numberDiff line change
@@ -7,13 +7,14 @@
77
*
88
*
99
* IDENTIFICATION
10-
* $Header: /cvsroot/pgsql/src/backend/parser/Attic/dbcommands.c,v 1.9 1997/09/08 21:46:07 momjian Exp $
10+
* $Header: /cvsroot/pgsql/src/backend/parser/Attic/dbcommands.c,v 1.10 1997/11/07 06:37:55 thomas Exp $
1111
*
1212
*-------------------------------------------------------------------------
1313
*/
1414
#include<stdio.h>
1515
#include<string.h>
1616
#include<signal.h>
17+
#include<sys/stat.h>
1718

1819
#include"postgres.h"
1920
#include"miscadmin.h"/* for DataDir */
@@ -36,41 +37,58 @@
3637

3738
/* non-export function prototypes */
3839
staticvoid
39-
check_permissions(char*command,char*dbname,
40+
check_permissions(char*command,char*dbpath,char*dbname,
4041
Oid*dbIdP,Oid*userIdP);
4142
staticHeapTupleget_pg_dbtup(char*command,char*dbname,Relationdbrel);
42-
staticvoidstop_vacuum(char*dbname);
43+
staticvoidstop_vacuum(char*dbpath,char*dbname);
4344

4445
void
45-
createdb(char*dbname)
46+
createdb(char*dbname,char*dbpath)
4647
{
4748
Oiddb_id,
4849
user_id;
4950
charbuf[512];
51+
char*lp,
52+
loc[512];
5053

5154
/*
5255
* If this call returns, the database does not exist and we're allowed
5356
* to create databases.
5457
*/
55-
check_permissions("createdb",dbname,&db_id,&user_id);
58+
check_permissions("createdb",dbpath,dbname,&db_id,&user_id);
5659

5760
/* close virtual file descriptors so we can do system() calls */
5861
closeAllVfds();
5962

60-
sprintf(buf,"mkdir %s%cbase%c%s",DataDir,SEP_CHAR,SEP_CHAR,dbname);
61-
system(buf);
62-
sprintf(buf,"%s %s%cbase%ctemplate1%c* %s%cbase%c%s",
63-
COPY_CMD,DataDir,SEP_CHAR,SEP_CHAR,SEP_CHAR,DataDir,
64-
SEP_CHAR,SEP_CHAR,dbname);
63+
/* Now create directory for this new database */
64+
if ((dbpath!=NULL)&& (strcmp(dbpath,dbname)!=0))
65+
{
66+
if (*(dbpath+strlen(dbpath)-1)==SEP_CHAR)
67+
*(dbpath+strlen(dbpath)-1)='\0';
68+
sprintf(loc,"%s%c%s",dbpath,SEP_CHAR,dbname);
69+
}
70+
else
71+
{
72+
strcpy(loc,dbname);
73+
}
74+
75+
lp=ExpandDatabasePath(loc);
76+
77+
if (mkdir(lp,S_IRWXU)!=0)
78+
elog(WARN,"Unable to create database directory %s",lp);
79+
80+
sprintf(buf,"%s %s%cbase%ctemplate1%c* %s",
81+
COPY_CMD,DataDir,SEP_CHAR,SEP_CHAR,SEP_CHAR,lp);
6582
system(buf);
6683

67-
/* sprintf(buf, "insert into pg_database (datname, datdba, datpath) \
68-
values (\'%s\'::char16, \'%d\'::oid, \'%s\'::text);",
69-
dbname, user_id, dbname);
70-
*/
84+
#ifFALSE
7185
sprintf(buf,"insert into pg_database (datname, datdba, datpath) \
72-
values (\'%s\', \'%d\', \'%s\');",
86+
values (\'%s\'::char16, \'%d\'::oid, \'%s\'::text);",
7387
dbname,user_id,dbname);
88+
#endif
89+
90+
sprintf(buf,"insert into pg_database (datname, datdba, datpath)"
91+
" values (\'%s\', \'%d\', \'%s\');",dbname,user_id,loc);
7492

7593
pg_eval(buf, (char**)NULL, (Oid*)NULL,0);
7694
}
@@ -80,21 +98,57 @@ destroydb(char *dbname)
8098
{
8199
Oiduser_id,
82100
db_id;
101+
char*path;
102+
chardbpath[MAXPGPATH+1];
83103
charbuf[512];
104+
charloc[512];
105+
text*dbtext;
106+
107+
Relationdbrel;
108+
HeapTupledbtup;
84109

85110
/*
86111
* If this call returns, the database exists and we're allowed to
87112
* remove it.
88113
*/
89-
check_permissions("destroydb",dbname,&db_id,&user_id);
114+
check_permissions("destroydb",dbpath,dbname,&db_id,&user_id);
90115

91116
if (!OidIsValid(db_id))
92117
{
93118
elog(FATAL,"impossible: pg_database instance with invalid OID.");
94119
}
95120

96121
/* stop the vacuum daemon */
97-
stop_vacuum(dbname);
122+
stop_vacuum(dbpath,dbname);
123+
124+
#ifFALSE
125+
dbrel=heap_openr(DatabaseRelationName);
126+
if (!RelationIsValid(dbrel))
127+
elog(FATAL,"%s: cannot open relation \"%-.*s\"",
128+
"destroydb",DatabaseRelationName);
129+
130+
dbtup=get_pg_dbtup("destroydb",dbname,dbrel);
131+
132+
if (!HeapTupleIsValid(dbtup))
133+
elog(NOTICE,"destroydb: pg_database entry not found %s",dbname);
134+
135+
dbtext= (text*)heap_getattr(dbtup,InvalidBuffer,
136+
Anum_pg_database_datpath,
137+
RelationGetTupleDescriptor(dbrel),
138+
(char*)NULL);
139+
memcpy(loc,VARDATA(dbtext), (VARSIZE(dbtext)-VARHDRSZ));
140+
*(loc+(VARSIZE(dbtext)-VARHDRSZ))='\0';
141+
142+
#ifFALSE
143+
if (*loc!=SEP_CHAR)
144+
{
145+
sprintf(buf,"%s/base/%s",DataDir,loc);
146+
strcpy(loc,buf);
147+
}
148+
#endif
149+
150+
heap_close(dbrel);
151+
#endif
98152

99153
/*
100154
* remove the pg_database tuple FIRST, this may fail due to
@@ -108,7 +162,9 @@ destroydb(char *dbname)
108162
* remove the data directory. If the DELETE above failed, this will
109163
* not be reached
110164
*/
111-
sprintf(buf,"rm -r %s/base/%s",DataDir,dbname);
165+
path=ExpandDatabasePath(dbpath);
166+
167+
sprintf(buf,"rm -r %s",path);
112168
system(buf);
113169

114170
/* drop pages for this database that are in the shared buffer cache */
@@ -160,6 +216,7 @@ get_pg_dbtup(char *command, char *dbname, Relation dbrel)
160216

161217
staticvoid
162218
check_permissions(char*command,
219+
char*dbpath,
163220
char*dbname,
164221
Oid*dbIdP,
165222
Oid*userIdP)
@@ -172,6 +229,8 @@ check_permissions(char *command,
172229
booldbfound;
173230
booluse_super;
174231
char*userName;
232+
text*dbtext;
233+
charpath[MAXPGPATH+1];
175234

176235
userName=GetPgUserName();
177236
utup=SearchSysCacheTuple(USENAME,PointerGetDatum(userName),
@@ -228,6 +287,13 @@ check_permissions(char *command,
228287
RelationGetTupleDescriptor(dbrel),
229288
(char*)NULL);
230289
*dbIdP=dbtup->t_oid;
290+
dbtext= (text*)heap_getattr(dbtup,InvalidBuffer,
291+
Anum_pg_database_datpath,
292+
RelationGetTupleDescriptor(dbrel),
293+
(char*)NULL);
294+
295+
strncpy(path,VARDATA(dbtext), (VARSIZE(dbtext)-VARHDRSZ));
296+
*(path+VARSIZE(dbtext)-VARHDRSZ)='\0';
231297
}
232298
else
233299
{
@@ -259,21 +325,31 @@ check_permissions(char *command,
259325
elog(WARN,"%s: database %s is not owned by you.",command,dbname);
260326

261327
}
262-
}
328+
329+
if (dbfound&& !strcmp(command,"destroydb"))
330+
strcpy(dbpath,path);
331+
}/* check_permissions() */
263332

264333
/*
265-
*stop_vacuum() -- stop the vacuum daemon on the database, if one is
266-
* running.
334+
*stop_vacuum() -- stop the vacuum daemon on the database, if one is running.
267335
*/
268336
staticvoid
269-
stop_vacuum(char*dbname)
337+
stop_vacuum(char*dbpath,char*dbname)
270338
{
271339
charfilename[256];
272340
FILE*fp;
273341
intpid;
274342

275-
sprintf(filename,"%s%cbase%c%s%c%s.vacuum",DataDir,SEP_CHAR,SEP_CHAR,
343+
if (strchr(dbpath,SEP_CHAR)!=0)
344+
{
345+
sprintf(filename,"%s%cbase%c%s%c%s.vacuum",DataDir,SEP_CHAR,SEP_CHAR,
276346
dbname,SEP_CHAR,dbname);
347+
}
348+
else
349+
{
350+
sprintf(filename,"%s%c%s.vacuum",dbpath,SEP_CHAR,dbname);
351+
}
352+
277353
if ((fp=AllocateFile(filename,"r"))!=NULL)
278354
{
279355
fscanf(fp,"%d",&pid);

‎src/backend/storage/file/fd.c

Lines changed: 16 additions & 12 deletions
Original file line numberDiff line numberDiff line change
@@ -6,7 +6,7 @@
66
* Copyright (c) 1994, Regents of the University of California
77
*
88
* IDENTIFICATION
9-
* $Id: fd.c,v 1.26 1997/09/18 20:21:24 momjian Exp $
9+
* $Id: fd.c,v 1.27 1997/11/07 06:38:15 thomas Exp $
1010
*
1111
* NOTES:
1212
*
@@ -125,8 +125,6 @@ static Size SizeVfdCache = 0;
125125
*/
126126
staticintnfile=0;
127127

128-
staticcharSep_char='/';
129-
130128
/*
131129
* Private Routines
132130
*
@@ -458,30 +456,36 @@ FreeVfd(File file)
458456
VfdCache[0].nextFree=file;
459457
}
460458

459+
/* filepath()
460+
* Open specified file name.
461+
* Fill in absolute path fields if necessary.
462+
*
463+
* Modify to use GetDatabasePath() rather than hardcoded paths.
464+
* - thomas 1997-11-02
465+
*/
461466
staticchar*
462467
filepath(char*filename)
463468
{
464469
char*buf;
465-
charbasename[16];
466470
intlen;
467471

468-
if (*filename!=Sep_char)
472+
/* Not an absolute path name? Then fill in with database path... */
473+
if (*filename!=SEP_CHAR)
469474
{
470-
/* Either /base/ or \base\ */
471-
sprintf(basename,"%cbase%c",Sep_char,Sep_char);
472-
473-
len=strlen(DataDir)+strlen(basename)+strlen(GetDatabaseName())
474-
+strlen(filename)+2;
475+
len=strlen(GetDatabasePath())+strlen(filename)+2;
475476
buf= (char*)palloc(len);
476-
sprintf(buf,"%s%s%s%c%s",
477-
DataDir,basename,GetDatabaseName(),Sep_char,filename);
477+
sprintf(buf,"%s%c%s",GetDatabasePath(),SEP_CHAR,filename);
478478
}
479479
else
480480
{
481481
buf= (char*)palloc(strlen(filename)+1);
482482
strcpy(buf,filename);
483483
}
484484

485+
#ifdefFILEDEBUG
486+
printf("filepath: path is %s\n",buf);
487+
#endif
488+
485489
return (buf);
486490
}
487491

‎src/backend/storage/smgr/md.c

Lines changed: 10 additions & 1 deletion
Original file line numberDiff line numberDiff line change
@@ -7,7 +7,7 @@
77
*
88
*
99
* IDENTIFICATION
10-
* $Header: /cvsroot/pgsql/src/backend/storage/smgr/md.c,v 1.23 1997/10/25 01:10:04 momjian Exp $
10+
* $Header: /cvsroot/pgsql/src/backend/storage/smgr/md.c,v 1.24 1997/11/07 06:38:19 thomas Exp $
1111
*
1212
*-------------------------------------------------------------------------
1313
*/
@@ -480,6 +480,7 @@ mdblindwrt(char *dbstr,
480480
nchars=0;
481481

482482
/* construct the path to the file and open it */
483+
/* system table? then put in system area... */
483484
if (dbid== (Oid)0)
484485
{
485486
path= (char*)palloc(strlen(DataDir)+sizeof(NameData)+2+nchars);
@@ -488,15 +489,23 @@ mdblindwrt(char *dbstr,
488489
else
489490
sprintf(path,"%s/%s.%d",DataDir,relstr,segno);
490491
}
492+
/* user table? then put in user database area... */
491493
else
492494
{
495+
#ifFALSE
493496
path= (char*)palloc(strlen(DataDir)+strlen("/base/")+2*sizeof(NameData)+2+nchars);
494497
if (segno==0)
495498
sprintf(path,"%s/base/%s/%s",DataDir,
496499
dbstr,relstr);
497500
else
498501
sprintf(path,"%s/base/%s/%s.%d",DataDir,dbstr,
499502
relstr,segno);
503+
#endif
504+
path= (char*)palloc(strlen(GetDatabasePath())+2*sizeof(NameData)+2+nchars);
505+
if (segno==0)
506+
sprintf(path,"%s%c%s",GetDatabasePath(),SEP_CHAR,relstr);
507+
else
508+
sprintf(path,"%s%c%s.%d",GetDatabasePath(),SEP_CHAR,relstr,segno);
500509
}
501510

502511
if ((fd=open(path,O_RDWR,0600))<0)

‎src/backend/tcop/utility.c

Lines changed: 2 additions & 2 deletions
Original file line numberDiff line numberDiff line change
@@ -9,7 +9,7 @@
99
*
1010
*
1111
* IDENTIFICATION
12-
* $Header: /cvsroot/pgsql/src/backend/tcop/utility.c,v 1.27 1997/10/28 14:57:24 vadim Exp $
12+
* $Header: /cvsroot/pgsql/src/backend/tcop/utility.c,v 1.28 1997/11/07 06:38:51 thomas Exp $
1313
*
1414
*-------------------------------------------------------------------------
1515
*/
@@ -569,7 +569,7 @@ ProcessUtility(Node * parsetree,
569569

570570
commandTag="CREATEDB";
571571
CHECK_IF_ABORTED();
572-
createdb(stmt->dbname);
572+
createdb(stmt->dbname,stmt->dbpath);
573573
}
574574
break;
575575

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