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Commitf4ed650

Browse files
committed
load_file() has to remove pre-existing shlibs that match the new file
on either name or inode; otherwise load_external_function() won't doanything. At least on Linux, it appears that recompiling a shlib leadsto a new file with a different inode, so the old code failed to detecta match.
1 parent3e20a72 commitf4ed650

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1 file changed

+22
-24
lines changed

1 file changed

+22
-24
lines changed

‎src/backend/utils/fmgr/dfmgr.c‎

Lines changed: 22 additions & 24 deletions
Original file line numberDiff line numberDiff line change
@@ -8,7 +8,7 @@
88
*
99
*
1010
* IDENTIFICATION
11-
* $Header: /cvsroot/pgsql/src/backend/utils/fmgr/dfmgr.c,v 1.64 2003/08/04 02:40:06 momjian Exp $
11+
* $Header: /cvsroot/pgsql/src/backend/utils/fmgr/dfmgr.c,v 1.65 2003/09/07 02:18:01 tgl Exp $
1212
*
1313
*-------------------------------------------------------------------------
1414
*/
@@ -96,7 +96,8 @@ load_external_function(char *filename, char *funcname,
9696
if (stat(fullname,&stat_buf)==-1)
9797
ereport(ERROR,
9898
(errcode_for_file_access(),
99-
errmsg("could not access file \"%s\": %m",fullname)));
99+
errmsg("could not access file \"%s\": %m",
100+
fullname)));
100101

101102
for (file_scanner=file_list;
102103
file_scanner!= (DynamicFileList*)NULL&&
@@ -177,7 +178,8 @@ void
177178
load_file(char*filename)
178179
{
179180
DynamicFileList*file_scanner,
180-
*p;
181+
*prv,
182+
*nxt;
181183
structstatstat_buf;
182184
char*fullname;
183185

@@ -196,31 +198,27 @@ load_file(char *filename)
196198
(errcode_for_file_access(),
197199
errmsg("could not access file \"%s\": %m",fullname)));
198200

199-
if (file_list!= (DynamicFileList*)NULL)
201+
/*
202+
* We have to zap all entries in the list that match on either filename
203+
* or inode, else load_external_function() won't do anything.
204+
*/
205+
prv=NULL;
206+
for (file_scanner=file_list;file_scanner!=NULL;file_scanner=nxt)
200207
{
201-
if (SAME_INODE(stat_buf,*file_list))
208+
nxt=file_scanner->next;
209+
if (strcmp(fullname,file_scanner->filename)==0||
210+
SAME_INODE(stat_buf,*file_scanner))
202211
{
203-
p=file_list;
204-
file_list=p->next;
205-
pg_dlclose(p->handle);
206-
free((char*)p);
212+
if (prv)
213+
prv->next=nxt;
214+
else
215+
file_list=nxt;
216+
pg_dlclose(file_scanner->handle);
217+
free((char*)file_scanner);
218+
/* prv does not change */
207219
}
208220
else
209-
{
210-
for (file_scanner=file_list;
211-
file_scanner->next!= (DynamicFileList*)NULL;
212-
file_scanner=file_scanner->next)
213-
{
214-
if (SAME_INODE(stat_buf,*(file_scanner->next)))
215-
{
216-
p=file_scanner->next;
217-
file_scanner->next=p->next;
218-
pg_dlclose(p->handle);
219-
free((char*)p);
220-
break;
221-
}
222-
}
223-
}
221+
prv=file_scanner;
224222
}
225223

226224
load_external_function(fullname, (char*)NULL, false, (void*)NULL);

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