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mdcreate(): 

fd = FileNameOpenFile(path, O_RDWR|O_CREAT|O_EXCL, 0600);

    /*
     *  If the file already exists and is empty, we pretend that the
     *  create succeeded.  During bootstrap processing, we skip that check,
     *  because pg_time, pg_variable, and pg_log get created before their
     *  .bki file entries are processed.
     *
>    *  As the result of this pretence it was possible to have in
>    *  pg_class > 1 records with the same relname. Actually, it
>    *  should be fixed in upper levels, too, but... -  vadim 05/06/97
>    */
This commit is contained in:
Vadim B. Mikheev 1997-05-06 02:03:20 +00:00
parent b45128f1c3
commit 13f41aa90b
1 changed files with 12 additions and 10 deletions
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22
src/backend/storage/smgr/md.c
View File

@ -7,7 +7,7 @@
*
*
* IDENTIFICATION
* $Header: /cvsroot/pgsql/src/backend/storage/smgr/md.c,v 1.11 1997/02/14 04:17:08 momjian Exp $
* $Header: /cvsroot/pgsql/src/backend/storage/smgr/md.c,v 1.12 1997/05/06 02:03:20 vadim Exp $
*
*-------------------------------------------------------------------------
*/
@ -99,7 +99,6 @@ int
mdcreate(Relation reln)
{
int fd, vfd;
int tmp;
char *path;
extern bool IsBootstrapProcessingMode();
@ -111,16 +110,19 @@ mdcreate(Relation reln)
* create succeeded. During bootstrap processing, we skip that check,
* because pg_time, pg_variable, and pg_log get created before their
* .bki file entries are processed.
*
* As the result of this pretence it was possible to have in
* pg_class > 1 records with the same relname. Actually, it
* should be fixed in upper levels, too, but... - vadim 05/06/97
*/
if (fd < 0) {
if ((fd = FileNameOpenFile(path, O_RDWR, 0600)) >= 0) {
if (!IsBootstrapProcessingMode() &&
FileRead(fd, (char *) &tmp, sizeof(tmp)) != 0) {
FileClose(fd);
return (-1);
}
}
if (fd < 0)
{
if ( !IsBootstrapProcessingMode() )
return (-1);
fd = FileNameOpenFile(path, O_RDWR, 0600); /* Bootstrap */
if ( fd < 0 )
return (-1);
}
if (CurFd >= Nfds) {