Correct usage of MTIOCLRERR ioctl for clearing persistant errors

[bacula/bacula] / bacula / src / stored / autochanger.c

diff --git a/bacula/src/stored/autochanger.c b/bacula/src/stored/autochanger.c
index 095ac4039aabb076266aff58450c441913fe55b7..be656ff3371d73fb1b226c3e6c56f8db4a5b8ada 100644 (file)
--- a/bacula/src/stored/autochanger.c
+++ b/bacula/src/stored/autochanger.c
@@ -7,19 +7,32 @@
  *   Version $Id$
  */
 /*
-   Copyright (C) 2002-2006 Kern Sibbald
+   Bacula® - The Network Backup Solution
 
-   This program is free software; you can redistribute it and/or
-   modify it under the terms of the GNU General Public License
-   version 2 as amended with additional clauses defined in the
-   file LICENSE in the main source directory.
+   Copyright (C) 2002-2006 Free Software Foundation Europe e.V.
 
-   This program is distributed in the hope that it will be useful,
-   but WITHOUT ANY WARRANTY; without even the implied warranty of
-   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 
-   the file LICENSE for additional details.
+   The main author of Bacula is Kern Sibbald, with contributions from
+   many others, a complete list can be found in the file AUTHORS.
+   This program is Free Software; you can redistribute it and/or
+   modify it under the terms of version two of the GNU General Public
+   License as published by the Free Software Foundation plus additions
+   that are listed in the file LICENSE.
 
- */
+   This program is distributed in the hope that it will be useful, but
+   WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+   General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program; if not, write to the Free Software
+   Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+   02110-1301, USA.
+
+   Bacula® is a registered trademark of John Walker.
+   The licensor of Bacula is the Free Software Foundation Europe
+   (FSFE), Fiduciary Program, Sumatrastrasse 25, 8006 Zürich,
+   Switzerland, email:ftf@fsfeurope.org.
+*/
 
 #include "bacula.h"                   /* pull in global headers */
 #include "stored.h"                   /* pull in Storage Deamon headers */
@@ -108,6 +121,12 @@ int autoload_device(DCR *dcr, int writing, BSOCK *dir)
       Dmsg1(200, "Device %s is not an autochanger\n", dev->print_name());
       return 0;
    }
+
+   /* An empty ChangerCommand => virtual disk autochanger */
+   if (dcr->device->changer_command && dcr->device->changer_command[0] == 0) {
+      return 1;                       /* nothing to load */
+   }
+
    slot = dcr->VolCatInfo.InChanger ? dcr->VolCatInfo.Slot : 0;
    /*
     * Handle autoloaders here.  If we cannot autoload it, we
@@ -127,13 +146,13 @@ int autoload_device(DCR *dcr, int writing, BSOCK *dir)
 
    changer = get_pool_memory(PM_FNAME);
    if (slot <= 0) {
-      Jmsg(jcr, M_INFO, 0, _("Invalid slot=%d defined, cannot autoload Volume.\n"), slot);
+      Jmsg(jcr, M_INFO, 0, _("Invalid slot=%d defined in catalog. Manual load my be required.\n"), slot);
       rtn_stat = 0;
    } else if (!dcr->device->changer_name) {
-      Jmsg(jcr, M_INFO, 0, _("No \"Changer Device\" given cannot autoload Volume.\n"));
+      Jmsg(jcr, M_INFO, 0, _("No \"Changer Device\" manual load of Volume may be required.\n"));
       rtn_stat = 0;
   } else if (!dcr->device->changer_command) {
-      Jmsg(jcr, M_INFO, 0, _("No \"Changer Command\" given cannot autoload Volume.\n"));
+      Jmsg(jcr, M_INFO, 0, _("No \"Changer Command\" manual load of Volume may be requird.\n"));
       rtn_stat = 0;
   } else {
       /* Attempt to load the Volume */
@@ -228,9 +247,13 @@ int get_autochanger_loaded_slot(DCR *dcr)
       Jmsg(jcr, M_FATAL, 0, _("3992 Missing Changer command.\n"));
       return -1;
    }
-   if (dev->Slot >0) {
+   if (dev->Slot > 0) {
       return dev->Slot;
    }
+   /* Virtual disk autochanger */
+   if (dcr->device->changer_command[0] ==0) {
+      return 1;
+   }
 
    /* Find out what is loaded, zero means device is unloaded */
    changer = get_pool_memory(PM_FNAME);
@@ -241,7 +264,7 @@ int get_autochanger_loaded_slot(DCR *dcr)
    *results.c_str() = 0;
    Dmsg1(100, "Run program=%s\n", changer);
    status = run_program_full_output(changer, timeout, results.c_str());
-   Dmsg3(100, "run_prog: %s stat=%d result=%s\n", changer, status, results.c_str());
+   Dmsg3(100, "run_prog: %s stat=%d result=%s", changer, status, results.c_str());
    if (status == 0) {
       loaded = str_to_int32(results.c_str());
       if (loaded > 0) {
@@ -391,14 +414,14 @@ static bool unload_other_drive(DCR *dcr, int slot)
       }
       break;
    }
-   P(dev->mutex);
+   dev->dlock();
    if (dev->is_busy()) {
       Jmsg(jcr, M_WARNING, 0, _("Volume \"%s\" is in use by device %s\n"),
            dcr->VolumeName, dev->print_name());
       Dmsg4(100, "Vol %s for dev=%s is busy dev=%s slot=%d\n",
            dcr->VolumeName, dcr->dev->print_name(), dev->print_name(), slot);
       Dmsg2(100, "num_writ=%d reserv=%d\n", dev->num_writers, dev->reserved_device);
-      V(dev->mutex);
+      dev->dunlock();
       return false;
    }
 
@@ -440,7 +463,7 @@ static bool unload_other_drive(DCR *dcr, int slot)
       Dmsg0(100, "Slot unloaded\n");
    }
    unlock_changer(dcr);
-   V(dev->mutex);
+   dev->dunlock();
    free_pool_memory(changer_cmd);
    return ok;
 }