2 * Copyright (C) 1994-1999, Index Data
4 * Sebastian Hammer, Adam Dickmeiss
7 * Revision 1.34 2002-07-16 13:17:53 heikki
8 * Removed a crash on zebraidx init, if the register area isn't there
10 * Revision 1.33 2002/04/04 14:14:13 adam
11 * Multiple registers (alpha early)
13 * Revision 1.32 2000/03/15 15:00:30 adam
14 * First work on threaded version.
16 * Revision 1.31 1999/12/08 15:03:11 adam
17 * Implemented bf_reset.
19 * Revision 1.30 1999/10/14 14:33:49 adam
20 * Added truncation 5=106.
22 * Revision 1.29 1999/05/26 07:49:12 adam
25 * Revision 1.28 1999/05/12 13:08:05 adam
26 * First version of ISAMS.
28 * Revision 1.27 1999/02/02 14:50:01 adam
29 * Updated WIN32 code specific sections. Changed header.
31 * Revision 1.26 1998/02/17 10:32:52 adam
32 * Fixed bug: binary files weren't opened with flag b on NT.
34 * Revision 1.25 1997/10/27 14:25:38 adam
37 * Revision 1.24 1997/09/18 08:59:16 adam
38 * Extra generic handle for the character mapping routines.
40 * Revision 1.23 1997/09/17 12:19:06 adam
41 * Zebra version corresponds to YAZ version 1.4.
42 * Changed Zebra server so that it doesn't depend on global common_resource.
44 * Revision 1.22 1997/09/09 13:37:52 adam
45 * Partial port to WIN95/NT.
47 * Revision 1.21 1996/10/29 13:56:13 adam
48 * Include of zebrautl.h instead of alexutil.h.
50 * Revision 1.20 1996/03/26 15:59:04 adam
51 * The directory of the shadow table file can be specified by the new
54 * Revision 1.19 1996/02/05 12:28:58 adam
55 * Removed a LOG_LOG message.
57 * Revision 1.18 1996/01/02 08:59:06 quinn
58 * Changed "commit" setting to "shadow".
60 * Revision 1.17 1995/12/11 09:03:51 adam
61 * New function: cf_unlink.
62 * New member of commit file head: state (0) deleted, (1) hash file.
64 * Revision 1.16 1995/12/08 16:21:13 adam
65 * Work on commit/update.
67 * Revision 1.15 1995/12/01 16:24:28 adam
68 * Commit files use separate meta file area.
70 * Revision 1.14 1995/12/01 11:37:21 adam
71 * Cached/commit files implemented as meta-files.
73 * Revision 1.13 1995/11/30 17:00:49 adam
74 * Several bug fixes. Commit system runs now.
76 * Revision 1.12 1995/11/30 08:33:10 adam
77 * Started work on commit facility.
79 * Revision 1.11 1995/09/04 12:33:21 adam
80 * Various cleanup. YAZ util used instead.
82 * Revision 1.10 1994/08/25 10:15:54 quinn
85 * Revision 1.9 1994/08/24 08:45:48 quinn
88 * Revision 1.8 1994/08/23 15:03:34 quinn
89 * *** empty log message ***
91 * Revision 1.7 1994/08/23 14:25:45 quinn
92 * Added O_CREAT because some geek wanted it. Sheesh.
94 * Revision 1.6 1994/08/23 14:21:38 quinn
97 * Revision 1.5 1994/08/18 08:10:08 quinn
100 * Revision 1.4 1994/08/17 14:27:32 quinn
103 * Revision 1.2 1994/08/17 14:09:32 quinn
104 * Compiles cleanly (still only dummy).
106 * Revision 1.1 1994/08/17 13:55:08 quinn
107 * New blocksystem. dummy only
121 #include <zebrautl.h>
125 struct BFiles_struct {
126 MFile_area commit_area;
127 MFile_area_struct *register_area;
132 BFiles bfs_create (const char *spec, const char *base)
134 BFiles bfs = (BFiles) xmalloc (sizeof(*bfs));
135 bfs->commit_area = NULL;
137 bfs->cache_fname = 0;
139 bfs->base = xstrdup (base);
140 bfs->register_area = mf_init("register", spec, base);
141 if (!bfs->register_area)
149 void bfs_destroy (BFiles bfs)
153 xfree (bfs->cache_fname);
155 mf_destroy (bfs->commit_area);
156 mf_destroy (bfs->register_area);
160 static FILE *open_cache (BFiles bfs, const char *flags)
164 file = fopen (bfs->cache_fname, flags);
168 static void unlink_cache (BFiles bfs)
170 unlink (bfs->cache_fname);
173 void bf_cache (BFiles bfs, const char *spec)
177 yaz_log (LOG_LOG, "enabling cache spec=%s", spec);
178 if (!bfs->commit_area)
179 bfs->commit_area = mf_init ("shadow", spec, bfs->base);
180 if (bfs->commit_area)
182 bfs->cache_fname = xmalloc (strlen(bfs->commit_area->dirs->name)+
184 strcpy (bfs->cache_fname, bfs->commit_area->dirs->name);
185 strcat (bfs->cache_fname, "/cache");
186 yaz_log (LOG_LOG, "cache_fname = %s", bfs->cache_fname);
190 bfs->commit_area = NULL;
193 int bf_close (BFile bf)
195 zebra_lock_rdwr_destroy (&bf->rdwr_lock);
203 BFile bf_open (BFiles bfs, const char *name, int block_size, int wflag)
205 BFile tmp = (BFile) xmalloc(sizeof(BFile_struct));
207 if (bfs->commit_area)
211 tmp->mf = mf_open (bfs->register_area, name, block_size, 0);
212 tmp->cf = cf_open (tmp->mf, bfs->commit_area, name, block_size,
218 outf = open_cache (bfs, "ab");
221 logf (LOG_FATAL|LOG_ERRNO, "open %s", bfs->cache_fname);
224 fprintf (outf, "%s %d\n", name, block_size);
230 tmp->mf = mf_open(bfs->register_area, name, block_size, wflag);
235 logf (LOG_FATAL, "mf_open failed for %s", name);
239 zebra_lock_rdwr_init (&tmp->rdwr_lock);
243 int bf_read (BFile bf, int no, int offset, int nbytes, void *buf)
247 zebra_lock_rdwr_rlock (&bf->rdwr_lock);
250 if ((r = cf_read (bf->cf, no, offset, nbytes, buf)) == -1)
251 r = mf_read (bf->mf, no, offset, nbytes, buf);
254 r = mf_read (bf->mf, no, offset, nbytes, buf);
255 zebra_lock_rdwr_runlock (&bf->rdwr_lock);
259 int bf_write (BFile bf, int no, int offset, int nbytes, const void *buf)
262 zebra_lock_rdwr_wlock (&bf->rdwr_lock);
264 r = cf_write (bf->cf, no, offset, nbytes, buf);
266 r = mf_write (bf->mf, no, offset, nbytes, buf);
267 zebra_lock_rdwr_wunlock (&bf->rdwr_lock);
271 int bf_commitExists (BFiles bfs)
275 inf = open_cache (bfs, "rb");
284 void bf_reset (BFiles bfs)
288 mf_reset (bfs->commit_area);
289 mf_reset (bfs->register_area);
292 void bf_commitExec (BFiles bfs)
301 assert (bfs->commit_area);
302 if (!(inf = open_cache (bfs, "rb")))
304 logf (LOG_LOG, "No commit file");
307 while (fscanf (inf, "%s %d", path, &block_size) == 2)
309 mf = mf_open (bfs->register_area, path, block_size, 1);
310 cf = cf_open (mf, bfs->commit_area, path, block_size, 0, &first_time);
320 void bf_commitClean (BFiles bfs, const char *spec)
330 if (!bfs->commit_area)
332 bf_cache (bfs, spec);
336 if (!(inf = open_cache (bfs, "rb")))
338 while (fscanf (inf, "%s %d", path, &block_size) == 2)
340 mf = mf_open (bfs->register_area, path, block_size, 0);
341 cf = cf_open (mf, bfs->commit_area, path, block_size, 1, &firstTime);