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Under Win32, stat() returns an st_ino field, but it has no meaning (on

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Win2K, and possibly all Win32 variants, it is always 0). This causes a
number of problems in the dfmgr.c logic, which basically all revolve
around the fact that *any* two files will appear to have the same inode.

Claudio Natoli
This commit is contained in:
Bruce Momjian 2004-02-17 03:35:57 +00:00
parent 51b363ec24
commit ec6feaaed4
1 changed files with 10 additions and 1 deletions
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11
src/backend/utils/fmgr/dfmgr.c
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@ -8,7 +8,7 @@
*
*
* IDENTIFICATION
* $PostgreSQL: pgsql/src/backend/utils/fmgr/dfmgr.c,v 1.69 2004/01/19 02:06:41 tgl Exp $
* $PostgreSQL: pgsql/src/backend/utils/fmgr/dfmgr.c,v 1.70 2004/02/17 03:35:57 momjian Exp $
*
*-------------------------------------------------------------------------
*/
@ -30,7 +30,9 @@ typedef struct df_files
{
struct df_files *next; /* List link */
dev_t device; /* Device file is on */
#ifndef WIN32 /* ensures we never again depend on this under win32 */
ino_t inode; /* Inode number of file */
#endif
void *handle; /* a handle for pg_dl* functions */
char filename[1]; /* Full pathname of file */
@ -43,7 +45,12 @@ typedef struct df_files
static DynamicFileList *file_list = NULL;
static DynamicFileList *file_tail = NULL;
/* stat() call under Win32 returns an st_ino field, but it has no meaning */
#ifndef WIN32
#define SAME_INODE(A,B) ((A).st_ino == (B).inode && (A).st_dev == (B).device)
#else
#define SAME_INODE(A,B) false
#endif
char *Dynamic_library_path;
@ -121,7 +128,9 @@ load_external_function(char *filename, char *funcname,
MemSet((char *) file_scanner, 0, sizeof(DynamicFileList));
strcpy(file_scanner->filename, fullname);
file_scanner->device = stat_buf.st_dev;
#ifndef WIN32
file_scanner->inode = stat_buf.st_ino;
#endif
file_scanner->next = NULL;
file_scanner->handle = pg_dlopen(fullname);