The directory of the shadow table file can be specified by the new

[idzebra-moved-to-github.git] / bfile / bfile.c

diff --git a/bfile/bfile.c b/bfile/bfile.c
index 85b01bb..ccaf537 100644 (file)
--- a/bfile/bfile.c
+++ b/bfile/bfile.c
@@ -4,7 +4,21 @@
  * Sebastian Hammer, Adam Dickmeiss
  *
  * $Log: bfile.c,v $
- * Revision 1.16  1995-12-08 16:21:13  adam
+ * 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
@@ -53,6 +67,7 @@
 
 #include <stdio.h>
 #include <stdlib.h>
+#include <string.h>
 #include <assert.h>
 #include <unistd.h>
 
@@ -61,17 +76,54 @@
 #include "cfile.h"
 
 static MFile_area commit_area = NULL;
+static char *commit_lockDir = NULL;
+
+static FILE *open_cache (const char *flags)
+{
+    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, "commit"))
-                commit_area = mf_init ("commit");
+            if (res_get (common_resource, "shadow"))
+            {
+                commit_area = mf_init ("shadow");
+            }
             else
             {
-                logf (LOG_FATAL, "Commit area must be defined if commit"
+                logf (LOG_FATAL, "Shadow area must be defined if commit"
                       "is to be enabled");
                 exit (1);
             }
@@ -95,17 +147,22 @@ BFile bf_open (const char *name, int block_size, int wflag)
 
     if (commit_area)
     {
-        FILE *outf;
         int first_time;
 
-        logf (LOG_LOG, "cf,mf_open %s", name);
-        
         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", "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);
         }
@@ -144,7 +201,7 @@ int bf_commitExists (void)
 {
     FILE *inf;
 
-    inf = fopen ("cache", "r");
+    inf = open_cache ("r");
     if (inf)
     {
         fclose (inf);
@@ -163,7 +220,7 @@ void bf_commitExec (void)
     int first_time;
 
     assert (commit_area);
-    if (!(inf = fopen ("cache", "r")))
+    if (!(inf = open_cache ("r")))
     {
         logf (LOG_LOG, "No commit file");
         return ;
@@ -188,18 +245,27 @@ void bf_commitClean (void)
     char path[256];
     MFile mf;
     CFile cf;
+    int mustDisable = 0;
+    int firstTime;
 
-    assert (commit_area);
-    if (!(inf = fopen ("cache", "r")))
+    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, NULL);
-
+        cf = cf_open (mf, commit_area, path, block_size, 1, &firstTime);
+        cf_unlink (cf);
         cf_close (cf);
         mf_close (mf);
     }
     fclose (inf);
-    unlink ("cache");
+    unlink_cache ();
+    if (mustDisable)
+        bf_cache (0);
 }