2 * Copyright (C) 1994-1999, Index Data
4 * Sebastian Hammer, Adam Dickmeiss
7 * Revision 1.32 2000-03-15 15:00:30 adam
8 * First work on threaded version.
10 * Revision 1.31 1999/12/08 15:03:11 adam
11 * Implemented bf_reset.
13 * Revision 1.30 1999/10/14 14:33:49 adam
14 * Added truncation 5=106.
16 * Revision 1.29 1999/05/26 07:49:12 adam
19 * Revision 1.28 1999/05/12 13:08:05 adam
20 * First version of ISAMS.
22 * Revision 1.27 1999/02/02 14:50:01 adam
23 * Updated WIN32 code specific sections. Changed header.
25 * Revision 1.26 1998/02/17 10:32:52 adam
26 * Fixed bug: binary files weren't opened with flag b on NT.
28 * Revision 1.25 1997/10/27 14:25:38 adam
31 * Revision 1.24 1997/09/18 08:59:16 adam
32 * Extra generic handle for the character mapping routines.
34 * Revision 1.23 1997/09/17 12:19:06 adam
35 * Zebra version corresponds to YAZ version 1.4.
36 * Changed Zebra server so that it doesn't depend on global common_resource.
38 * Revision 1.22 1997/09/09 13:37:52 adam
39 * Partial port to WIN95/NT.
41 * Revision 1.21 1996/10/29 13:56:13 adam
42 * Include of zebrautl.h instead of alexutil.h.
44 * Revision 1.20 1996/03/26 15:59:04 adam
45 * The directory of the shadow table file can be specified by the new
48 * Revision 1.19 1996/02/05 12:28:58 adam
49 * Removed a LOG_LOG message.
51 * Revision 1.18 1996/01/02 08:59:06 quinn
52 * Changed "commit" setting to "shadow".
54 * Revision 1.17 1995/12/11 09:03:51 adam
55 * New function: cf_unlink.
56 * New member of commit file head: state (0) deleted, (1) hash file.
58 * Revision 1.16 1995/12/08 16:21:13 adam
59 * Work on commit/update.
61 * Revision 1.15 1995/12/01 16:24:28 adam
62 * Commit files use separate meta file area.
64 * Revision 1.14 1995/12/01 11:37:21 adam
65 * Cached/commit files implemented as meta-files.
67 * Revision 1.13 1995/11/30 17:00:49 adam
68 * Several bug fixes. Commit system runs now.
70 * Revision 1.12 1995/11/30 08:33:10 adam
71 * Started work on commit facility.
73 * Revision 1.11 1995/09/04 12:33:21 adam
74 * Various cleanup. YAZ util used instead.
76 * Revision 1.10 1994/08/25 10:15:54 quinn
79 * Revision 1.9 1994/08/24 08:45:48 quinn
82 * Revision 1.8 1994/08/23 15:03:34 quinn
83 * *** empty log message ***
85 * Revision 1.7 1994/08/23 14:25:45 quinn
86 * Added O_CREAT because some geek wanted it. Sheesh.
88 * Revision 1.6 1994/08/23 14:21:38 quinn
91 * Revision 1.5 1994/08/18 08:10:08 quinn
94 * Revision 1.4 1994/08/17 14:27:32 quinn
97 * Revision 1.2 1994/08/17 14:09:32 quinn
98 * Compiles cleanly (still only dummy).
100 * Revision 1.1 1994/08/17 13:55:08 quinn
101 * New blocksystem. dummy only
115 #include <zebrautl.h>
119 struct BFiles_struct {
120 MFile_area commit_area;
121 MFile_area_struct *register_area;
125 BFiles bfs_create (const char *spec)
127 BFiles bfs = (BFiles) xmalloc (sizeof(*bfs));
128 bfs->commit_area = NULL;
129 bfs->register_area = mf_init("register", spec);
131 if (!bfs->register_area)
139 void bfs_destroy (BFiles bfs)
141 xfree (bfs->lockDir);
142 mf_destroy (bfs->commit_area);
143 mf_destroy (bfs->register_area);
147 static FILE *open_cache (BFiles bfs, const char *flags)
149 char cacheFilename[1024];
152 sprintf (cacheFilename, "%scache",
153 bfs->lockDir ? bfs->lockDir : "");
154 file = fopen (cacheFilename, flags);
158 static void unlink_cache (BFiles bfs)
160 char cacheFilename[1024];
162 sprintf (cacheFilename, "%scache",
163 bfs->lockDir ? bfs->lockDir : "");
164 unlink (cacheFilename);
167 void bf_lockDir (BFiles bfs, const char *lockDir)
171 xfree (bfs->lockDir);
174 len = strlen(lockDir);
175 bfs->lockDir = (char *) xmalloc (len+2);
176 strcpy (bfs->lockDir, lockDir);
178 if (len > 0 && bfs->lockDir[len-1] != '/')
179 strcpy (bfs->lockDir + len, "/");
182 void bf_cache (BFiles bfs, const char *spec)
186 if (!bfs->commit_area)
187 bfs->commit_area = mf_init ("shadow", spec);
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 %scache",
222 bfs->lockDir ? bfs->lockDir : "");
225 fprintf (outf, "%s %d\n", name, block_size);
231 tmp->mf = mf_open(bfs->register_area, name, block_size, wflag);
236 logf (LOG_FATAL, "mf_open failed for %s", name);
240 zebra_lock_rdwr_init (&tmp->rdwr_lock);
244 int bf_read (BFile bf, int no, int offset, int nbytes, void *buf)
248 zebra_lock_rdwr_rlock (&bf->rdwr_lock);
251 if ((r = cf_read (bf->cf, no, offset, nbytes, buf)) == -1)
252 r = mf_read (bf->mf, no, offset, nbytes, buf);
255 r = mf_read (bf->mf, no, offset, nbytes, buf);
256 zebra_lock_rdwr_runlock (&bf->rdwr_lock);
260 int bf_write (BFile bf, int no, int offset, int nbytes, const void *buf)
263 zebra_lock_rdwr_wlock (&bf->rdwr_lock);
265 r = cf_write (bf->cf, no, offset, nbytes, buf);
267 r = mf_write (bf->mf, no, offset, nbytes, buf);
268 zebra_lock_rdwr_wunlock (&bf->rdwr_lock);
272 int bf_commitExists (BFiles bfs)
276 inf = open_cache (bfs, "rb");
285 void bf_reset (BFiles bfs)
287 mf_reset (bfs->commit_area);
288 mf_reset (bfs->register_area);
291 void bf_commitExec (BFiles bfs)
300 assert (bfs->commit_area);
301 if (!(inf = open_cache (bfs, "rb")))
303 logf (LOG_LOG, "No commit file");
306 while (fscanf (inf, "%s %d", path, &block_size) == 2)
308 mf = mf_open (bfs->register_area, path, block_size, 1);
309 cf = cf_open (mf, bfs->commit_area, path, block_size, 0, &first_time);
319 void bf_commitClean (BFiles bfs, const char *spec)
329 if (!bfs->commit_area)
331 bf_cache (bfs, spec);
335 if (!(inf = open_cache (bfs, "rb")))
337 while (fscanf (inf, "%s %d", path, &block_size) == 2)
339 mf = mf_open (bfs->register_area, path, block_size, 0);
340 cf = cf_open (mf, bfs->commit_area, path, block_size, 1, &firstTime);