| 1 | /* gdbmclose.c - Close a previously opened dbm file. */
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| 2 |
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| 3 | /* This file is part of GDBM, the GNU data base manager, by Philip A. Nelson.
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| 4 | Copyright (C) 1990, 1991, 1993 Free Software Foundation, Inc.
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| 5 |
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| 6 | GDBM is free software; you can redistribute it and/or modify
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| 7 | it under the terms of the GNU General Public License as published by
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| 8 | the Free Software Foundation; either version 2, or (at your option)
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| 9 | any later version.
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| 10 |
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| 11 | GDBM is distributed in the hope that it will be useful,
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| 12 | but WITHOUT ANY WARRANTY; without even the implied warranty of
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| 13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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| 14 | GNU General Public License for more details.
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| 15 |
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| 16 | You should have received a copy of the GNU General Public License
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| 17 | along with GDBM; see the file COPYING. If not, write to
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| 18 | the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
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| 19 |
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| 20 | You may contact the author by:
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| 21 | e-mail: [email protected]
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| 22 | us-mail: Philip A. Nelson
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| 23 | Computer Science Department
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| 24 | Western Washington University
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| 25 | Bellingham, WA 98226
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| 26 |
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| 27 | *************************************************************************/
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| 28 |
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| 29 |
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| 30 | /* include system configuration before all else. */
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| 31 | #include "autoconf.h"
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| 32 |
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| 33 | #include "gdbmdefs.h"
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| 34 |
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| 35 | /* Close the dbm file and free all memory associated with the file DBF.
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| 36 | Before freeing members of DBF, check and make sure that they were
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| 37 | allocated. */
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| 38 |
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| 39 | void
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| 40 | gdbm_close (dbf)
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| 41 | gdbm_file_info *dbf;
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| 42 | {
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| 43 | register int index; /* For freeing the bucket cache. */
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| 44 |
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| 45 | /* Make sure the database is all on disk. */
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| 46 | if (dbf->read_write != GDBM_READER)
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| 47 | fsync (dbf->desc);
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| 48 |
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| 49 | /* Close the file and free all malloced memory. */
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| 50 | if (dbf->file_locking)
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| 51 | {
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| 52 | #ifdef MSDOS
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| 53 | if (dbf->need_filelock) {
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| 54 | UNLOCK_FILE(dbf);
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| 55 | }
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| 56 | #else
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| 57 | UNLOCK_FILE(dbf);
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| 58 | #endif
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| 59 | }
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| 60 | close (dbf->desc);
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| 61 | free (dbf->name);
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| 62 | if (dbf->dir != NULL) free (dbf->dir);
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| 63 |
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| 64 | if (dbf->bucket_cache != NULL) {
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| 65 | for (index = 0; index < dbf->cache_size; index++) {
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| 66 | if (dbf->bucket_cache[index].ca_bucket != NULL)
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| 67 | free (dbf->bucket_cache[index].ca_bucket);
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| 68 | if (dbf->bucket_cache[index].ca_data.dptr != NULL)
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| 69 | free (dbf->bucket_cache[index].ca_data.dptr);
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| 70 | }
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| 71 | free (dbf->bucket_cache);
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| 72 | }
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| 73 | if ( dbf->header != NULL ) free (dbf->header);
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| 74 | free (dbf);
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| 75 | }
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