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