gecko-dev/db/os.win16/os_fid.c
1998-10-15 03:56:37 +00:00

66 lines
1.4 KiB
C

/*-
* See the file LICENSE for redistribution information.
*
* Copyright (c) 1998
* Sleepycat Software. All rights reserved.
*
* This code is derived from software contributed to Sleepycat Software by
* Frederick G.M. Roeber of Netscape Communications Corp.
*/
#include "config.h"
#ifndef lint
static const char sccsid[] = "@(#)os_fid.c 10.3 (Sleepycat) 4/10/98";
#endif /* not lint */
#include "db_int.h"
#include "common_ext.h"
/*
* __db_fileid --
* Return a unique identifier for a file.
*
* PUBLIC: int __db_fileid __P((DB_ENV *, const char *, int, u_int8_t *));
*/
int
__db_fileid(dbenv, fname, timestamp, fidp)
DB_ENV *dbenv;
const char *fname;
int timestamp;
u_int8_t *fidp;
{
time_t now;
size_t i, len;
u_int8_t *p;
COMPQUIET(dbenv, NULL);
/*
* Windows/16 has no unique identifier, like the inode number on
* UNIX. We use the name plus the timestamp, and hope that it's
* sufficient.
*/
len = DB_FILE_ID_LEN;
if (timestamp) {
(void)time(&now);
p = (u_int8_t *)&now;
for (i = 0; i < sizeof(time_t); ++i)
*fidp++ = *p++;
len -= sizeof(time_t);
}
/*
* XXX
* We're appending the full path name here -- is that right? If
* the drive is mounted elsewhere next time, won't this be wrong.
* Maybe only append up to the path separator?
*/
for (p = (u_int8_t *)fname; *p != '\0'; ++p);
for (; len > 0 && --p >= (u_int8_t *)fname; --len)
*fidp++ = *p;
return (0);
}