X-Git-Url: http://git.indexdata.com/?a=blobdiff_plain;f=bfile%2Fbfile.c;h=d1a684ad413d6555f51e67ecf3cdc10dda2e6a72;hb=70961362d71c04daaf0b0feafe59e78d235eb116;hp=bf73dc3a39f0506687f4c19c457ee7b3f5804a81;hpb=d75b9accf5a28bd5d8ffd70bbb33b3e8e009d079;p=idzebra-moved-to-github.git diff --git a/bfile/bfile.c b/bfile/bfile.c index bf73dc3..d1a684a 100644 --- a/bfile/bfile.c +++ b/bfile/bfile.c @@ -4,7 +4,36 @@ * Sebastian Hammer, Adam Dickmeiss * * $Log: bfile.c,v $ - * Revision 1.12 1995-11-30 08:33:10 adam + * Revision 1.21 1996-10-29 13:56:13 adam + * Include of zebrautl.h instead of alexutil.h. + * + * Revision 1.20 1996/03/26 15:59:04 adam + * The directory of the shadow table file can be specified by the new + * bf_lockDir call. + * + * Revision 1.19 1996/02/05 12:28:58 adam + * Removed a LOG_LOG message. + * + * Revision 1.18 1996/01/02 08:59:06 quinn + * Changed "commit" setting to "shadow". + * + * Revision 1.17 1995/12/11 09:03:51 adam + * New function: cf_unlink. + * New member of commit file head: state (0) deleted, (1) hash file. + * + * Revision 1.16 1995/12/08 16:21:13 adam + * Work on commit/update. + * + * Revision 1.15 1995/12/01 16:24:28 adam + * Commit files use separate meta file area. + * + * Revision 1.14 1995/12/01 11:37:21 adam + * Cached/commit files implemented as meta-files. + * + * Revision 1.13 1995/11/30 17:00:49 adam + * Several bug fixes. Commit system runs now. + * + * Revision 1.12 1995/11/30 08:33:10 adam * Started work on commit facility. * * Revision 1.11 1995/09/04 12:33:21 adam @@ -40,20 +69,70 @@ */ #include -#include -#include -#include #include +#include +#include +#include -#include +#include #include #include "cfile.h" -static const char *cache_name = NULL; +static MFile_area commit_area = NULL; +static char *commit_lockDir = NULL; -void bf_cache (const char *name) +static FILE *open_cache (const char *flags) { - cache_name = name; + char cacheFilename[1024]; + FILE *file; + + sprintf (cacheFilename, "%scache", commit_lockDir ? commit_lockDir : ""); + file = fopen (cacheFilename, flags); + return file; +} + +static void unlink_cache (void) +{ + char cacheFilename[1024]; + + sprintf (cacheFilename, "%scache", commit_lockDir ? commit_lockDir : ""); + unlink (cacheFilename); +} + +void bf_lockDir (const char *lockDir) +{ + size_t len; + + xfree (commit_lockDir); + + if (lockDir == NULL) + lockDir = ""; + len = strlen(lockDir); + commit_lockDir = xmalloc (len+2); + strcpy (commit_lockDir, lockDir); + + if (len > 0 && commit_lockDir[len-1] != '/') + strcpy (commit_lockDir + len, "/"); +} + +void bf_cache (int enableFlag) +{ + if (enableFlag) + { + if (!commit_area) + if (res_get (common_resource, "shadow")) + { + commit_area = mf_init ("shadow"); + } + else + { + logf (LOG_FATAL, "Shadow area must be defined if commit" + "is to be enabled"); + exit (1); + } + } + else + commit_area = NULL; } int bf_close (BFile bf) @@ -69,19 +148,24 @@ BFile bf_open (const char *name, int block_size, int wflag) { BFile tmp = xmalloc(sizeof(BFile_struct)); - if (cache_name) + if (commit_area) { - FILE *outf; int first_time; - logf (LOG_LOG, "cf,mf_open %s, cache_name=%s", name, cache_name); - tmp->mf = mf_open(0, name, block_size, wflag); - tmp->cf = cf_open(tmp->mf, cache_name, name, block_size, wflag, - &first_time); - + tmp->mf = mf_open (0, name, block_size, 0); + tmp->cf = cf_open (tmp->mf, commit_area, name, block_size, + wflag, &first_time); if (first_time) { - outf = fopen (cache_name, "a"); + FILE *outf; + + outf = open_cache ("a"); + if (!outf) + { + logf (LOG_FATAL|LOG_ERRNO, "open %scache", + commit_lockDir ? commit_lockDir : ""); + exit (1); + } fprintf (outf, "%s %d\n", name, block_size); fclose (outf); } @@ -116,7 +200,20 @@ int bf_write (BFile bf, int no, int offset, int num, const void *buf) return mf_write (bf->mf, no, offset, num, buf); } -void bf_commit (const char *name) +int bf_commitExists (void) +{ + FILE *inf; + + inf = open_cache ("r"); + if (inf) + { + fclose (inf); + return 1; + } + return 0; +} + +void bf_commitExec (void) { FILE *inf; int block_size; @@ -125,15 +222,16 @@ void bf_commit (const char *name) CFile cf; int first_time; - if (!(inf = fopen (name, "r"))) + assert (commit_area); + if (!(inf = open_cache ("r"))) { - logf (LOG_FATAL|LOG_ERRNO, "cannot open commit %s", name); - exit (1); + logf (LOG_LOG, "No commit file"); + return ; } - while (fscanf (inf, "%s %d", path, &block_size) == 1) + while (fscanf (inf, "%s %d", path, &block_size) == 2) { - mf = mf_open(0, path, block_size, 1); - cf = cf_open(mf, name, path, block_size, 0, &first_time); + mf = mf_open (0, path, block_size, 1); + cf = cf_open (mf, commit_area, path, block_size, 0, &first_time); cf_commit (cf); @@ -142,3 +240,35 @@ void bf_commit (const char *name) } fclose (inf); } + +void bf_commitClean (void) +{ + FILE *inf; + int block_size; + char path[256]; + MFile mf; + CFile cf; + int mustDisable = 0; + int firstTime; + + if (!commit_area) + { + bf_cache (1); + mustDisable = 1; + } + + if (!(inf = open_cache ("r"))) + return ; + while (fscanf (inf, "%s %d", path, &block_size) == 2) + { + mf = mf_open (0, path, block_size, 0); + cf = cf_open (mf, commit_area, path, block_size, 1, &firstTime); + cf_unlink (cf); + cf_close (cf); + mf_close (mf); + } + fclose (inf); + unlink_cache (); + if (mustDisable) + bf_cache (0); +}