From 06b505528b43dc50d3f6eb21b27f1d31d181e316 Mon Sep 17 00:00:00 2001
From: Kern Sibbald <kern@sibbald.com>
Date: Thu, 20 Sep 2007 16:11:28 +0000
Subject: [PATCH] kes  Fix ANSI tape labeling. Fix restoring ANSI labeled
 Volumes.      This fixes bug #954.

git-svn-id: https://bacula.svn.sourceforge.net/svnroot/bacula/trunk@5612 91ce42f0-d328-0410-95d8-f526ca767f89
---
 bacula/src/findlib/save_cwd.h  |  0
 bacula/src/stored/ansi_label.c | 29 +++++++++++++++++------------
 bacula/src/stored/block.c      | 12 ++++++++++++
 bacula/src/stored/label.c      |  1 -
 bacula/technotes-2.3           |  3 ++-
 5 files changed, 31 insertions(+), 14 deletions(-)
 create mode 100644 bacula/src/findlib/save_cwd.h

diff --git a/bacula/src/findlib/save_cwd.h b/bacula/src/findlib/save_cwd.h
new file mode 100644
index 0000000000..e69de29bb2
diff --git a/bacula/src/stored/ansi_label.c b/bacula/src/stored/ansi_label.c
index 1414868491..e8978ec7bc 100644
--- a/bacula/src/stored/ansi_label.c
+++ b/bacula/src/stored/ansi_label.c
@@ -1,18 +1,7 @@
-/*
- *
- *  ansi_label.c routines to handle ANSI (and perhaps one day IBM)
- *   tape labels.
- *
- *   Kern Sibbald, MMV
- *
- *
- *
- *   Version $Id$
- */
 /*
    Bacula® - The Network Backup Solution
 
-   Copyright (C) 2005-2006 Free Software Foundation Europe e.V.
+   Copyright (C) 2005-2007 Free Software Foundation Europe e.V.
 
    The main author of Bacula is Kern Sibbald, with contributions from
    many others, a complete list can be found in the file AUTHORS.
@@ -36,6 +25,17 @@
    (FSFE), Fiduciary Program, Sumatrastrasse 25, 8006 Zürich,
    Switzerland, email:ftf@fsfeurope.org.
 */
+/*
+ *
+ *  ansi_label.c routines to handle ANSI (and perhaps one day IBM)
+ *   tape labels.
+ *
+ *   Kern Sibbald, MMV
+ *
+ *
+ *
+ *   Version $Id$
+ */
 
 #include "bacula.h"                   /* pull in global headers */
 #include "stored.h"                   /* pull in Storage Deamon headers */
@@ -115,6 +115,7 @@ int read_ansi_ibm_label(DCR *dcr)
             if (strncmp("VOL1", label, 4) == 0) {
                ok = true;
                dev->label_type = B_ANSI_LABEL;
+               Dmsg0(100, "Got ANSI VOL1 label\n");
             } else {
                /* Try EBCDIC */
                ebcdic_to_ascii(label, label, sizeof(label));
@@ -122,6 +123,7 @@ int read_ansi_ibm_label(DCR *dcr)
                   ok = true;;
                   dev->label_type = B_IBM_LABEL;
                   Dmsg0(100, "Found IBM label.\n");
+                  Dmsg0(100, "Got IBM VOL1 label\n");
                }
             }       
          }
@@ -168,6 +170,7 @@ int read_ansi_ibm_label(DCR *dcr)
                dev->VolHdr.VolumeName);
             return VOL_NAME_ERROR;     /* Not a Bacula label */
          }
+         Dmsg0(100, "Got HDR1 label\n");
          break;
       case 2:
          if (dev->label_type == B_IBM_LABEL) {
@@ -178,6 +181,7 @@ int read_ansi_ibm_label(DCR *dcr)
             Mmsg0(jcr->errmsg, _("No HDR2 label while reading ANSI/IBM label.\n"));
             return VOL_LABEL_ERROR;
          }
+         Dmsg0(100, "Got ANSI HDR2 label\n");
          break;
       default:
          if (stat == 0) {
@@ -192,6 +196,7 @@ int read_ansi_ibm_label(DCR *dcr)
             Mmsg0(jcr->errmsg, _("Unknown or bad ANSI/IBM label record.\n"));
             return VOL_LABEL_ERROR;
          }
+         Dmsg0(100, "Got HDR label\n");
          break;
       }
    }
diff --git a/bacula/src/stored/block.c b/bacula/src/stored/block.c
index eb16996014..d23182a7ee 100644
--- a/bacula/src/stored/block.c
+++ b/bacula/src/stored/block.c
@@ -273,6 +273,7 @@ static bool unser_block_header(JCR *jcr, DEVICE *dev, DEV_BLOCK *block)
       dev->dev_errno = EIO;
       Mmsg4(dev->errmsg, _("Volume data error at %u:%u! Wanted ID: \"%s\", got \"%s\". Buffer discarded.\n"),
           dev->file, dev->block_num, BLKHDR2_ID, Id);
+      Dmsg1(50, "%s", dev->errmsg);
       if (block->read_errors == 0 || verbose >= 2) {
          Jmsg(jcr, M_ERROR, 0, "%s", dev->errmsg);
       }
@@ -1008,8 +1009,19 @@ reread:
       dev->set_ateof();
       return false;             /* return eof */
    }
+
    /* Continue here for successful read */
+
    block->read_len = stat;      /* save length read */
+   if (dev->at_eof() && block->read_len == 80 && 
+        (dcr->VolCatInfo.LabelType != B_BACULA_LABEL ||
+         dcr->device->label_type != B_BACULA_LABEL)) {
+      /* ***FIXME*** should check label */
+      Dmsg2(100, "Ignore 80 byte ANSI label at %u:%u\n", dev->file, dev->block_num);
+      dev->clear_eof();
+      goto reread;             /* skip ANSI/IBM label */
+   }
+                                          
    if (block->read_len < BLKHDR2_LENGTH) {
       dev->dev_errno = EIO;
       Mmsg4(dev->errmsg, _("Volume data error at %u:%u! Very short block of %d bytes on device %s discarded.\n"),
diff --git a/bacula/src/stored/label.c b/bacula/src/stored/label.c
index 089da8ebbe..8f926bb7cc 100644
--- a/bacula/src/stored/label.c
+++ b/bacula/src/stored/label.c
@@ -119,7 +119,6 @@ int read_dev_volume_label(DCR *dcr)
    bstrncpy(dev->VolHdr.Id, "**error**", sizeof(dev->VolHdr.Id));
 
   /* Read ANSI/IBM label if so requested */
-  
   want_ansi_label = dcr->VolCatInfo.LabelType != B_BACULA_LABEL ||
                     dcr->device->label_type != B_BACULA_LABEL;
   if (want_ansi_label || dev->has_cap(CAP_CHECKLABELS)) {
diff --git a/bacula/technotes-2.3 b/bacula/technotes-2.3
index 30b0d05ea1..607ad8b595 100644
--- a/bacula/technotes-2.3
+++ b/bacula/technotes-2.3
@@ -2,7 +2,8 @@
 
 General:
 20Sep07
-kes  Fix ANSI tape labeling.  This fixes bug #954.
+kes  Fix ANSI tape labeling. Fix restoring ANSI labeled Volumes. 
+     This fixes bug #954.
 kes  Increase the max block size to 4MB fixes bug #957.
 kes  ERABT if user sets min block size > max block size.  Fixes bug #956.
 kes  Apply 2.2.4-poll-mount fix, that resolves bug #908 where a tape
-- 
2.39.5