Changed CD ident rountine to not use inodes

Author: jgg
Date: 1999-06-05 03:54:29 GMT
Changed CD ident rountine to not use inodes

apt-pkg/contrib/cdromutl.cc

@@ -1,6 +1,6 @@
 // -*- mode: cpp; mode: fold -*-
 // Description								/*{{{*/
-// $Id: cdromutl.cc,v 1.5 1999/04/20 05:11:17 jgg Exp $
+// $Id: cdromutl.cc,v 1.6 1999/06/05 03:54:29 jgg Exp $
 /* ######################################################################
    
    CDROM Utilities - Some functions to manipulate CDROM mounts.
@@ -160,7 +160,7 @@ bool MountCdrom(string Path)
 // ---------------------------------------------------------------------
 /* We convert everything we hash into a string, this prevents byte size/order
    from effecting the outcome. */
-bool IdentCdrom(string CD,string &Res)
+bool IdentCdrom(string CD,string &Res,unsigned int Version)
 {
    MD5Summation Hash;
 
@@ -182,8 +182,19 @@ bool IdentCdrom(string CD,string &Res)
       if (strcmp(Dir->d_name,".") == 0 ||
 	  strcmp(Dir->d_name,"..") == 0)
 	 continue;
-   
-      sprintf(S,"%lu",Dir->d_ino);
+
+      if (Version <= 1)
+      {
+	 sprintf(S,"%lu",Dir->d_ino);
+      }
+      else
+      {
+	 struct stat Buf;
+	 if (stat(Dir->d_name,&Buf) != 0)
+	    continue;
+	 sprintf(S,"%lu",Buf.st_mtime);
+      }
+      
       Hash.Add(S);
       Hash.Add(Dir->d_name);
    };
@@ -201,7 +212,8 @@ bool IdentCdrom(string CD,string &Res)
 	   (long)(Buf.f_bfree*(Buf.f_bsize/1024)));
    Hash.Add(S);
    
-   Res = Hash.Result().Value();
+   sprintf(S,"-%u",Version);
+   Res = Hash.Result().Value() + S;
    return true;   
 }
 									/*}}}*/

apt-pkg/contrib/cdromutl.h

@@ -1,6 +1,6 @@
 // -*- mode: cpp; mode: fold -*-
 // Description								/*{{{*/
-// $Id: cdromutl.h,v 1.1 1998/11/29 01:19:27 jgg Exp $
+// $Id: cdromutl.h,v 1.2 1999/06/05 03:54:29 jgg Exp $
 /* ######################################################################
 
    CDROM Utilities - Some functions to manipulate CDROM mounts.
@@ -18,6 +18,6 @@
 
 bool MountCdrom(string Path);
 bool UnmountCdrom(string Path);
-bool IdentCdrom(string CD,string &Res);
+bool IdentCdrom(string CD,string &Res,unsigned int Version = 2);
 
 #endif

methods/cdrom.cc

@@ -1,6 +1,6 @@
 // -*- mode: cpp; mode: fold -*-
 // Description								/*{{{*/
-// $Id: cdrom.cc,v 1.9 1999/05/23 05:45:13 jgg Exp $
+// $Id: cdrom.cc,v 1.10 1999/06/05 03:54:29 jgg Exp $
 /* ######################################################################
 
    CDROM URI method for APT
@@ -68,7 +68,9 @@ bool CDROMMethod::Fetch(FetchItem *Itm)
    URI Get = Itm->Uri;
    string File = Get.Path;
    FetchResult Res;
-   
+
+   bool Debug = _config->FindB("Debug::Acquire::cdrom",false);
+
    /* All IMS queries are returned as a hit, CDROMs are readonly so 
       time stamps never change */
    if (Itm->LastModified != 0)
@@ -114,13 +116,23 @@ bool CDROMMethod::Fetch(FetchItem *Itm)
    string NewID;
    while (1)
    {
-      if (IdentCdrom(CDROM,NewID) == false)
-	 return false;
-   
-      // A hit
-      if (Database.Find("CD::" + NewID) == Get.Host)
-	 break;
-
+      bool Hit = false;
+      for (unsigned int Version = 2; Version != 0; Version--)
+      {
+	 if (IdentCdrom(CDROM,NewID,Version) == false)
+	    return false;
+	 
+	 if (Debug == true)
+	    clog << "ID " << Version << " " << NewID << endl;
+      
+	 // A hit
+	 if (Database.Find("CD::" + NewID) == Get.Host)
+	 {
+	    Hit = true;
+	    break;
+	 }	 
+      }
+      
       // I suppose this should prompt somehow?
       if (UnmountCdrom(CDROM) == false)
 	 return _error->Error("Unable to unmount the CD-ROM in %s, it may still be in use.",