Move bnet_despool() into class in bsock.c

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

diff --git a/bacula/src/stored/acquire.c b/bacula/src/stored/acquire.c
index c1b791ee3d01e0025a0096d6b545a6a5fec50014..21ae93a3d355cb6b7c3a25bf2c091220131e8e0a 100644 (file)
--- a/bacula/src/stored/acquire.c
+++ b/bacula/src/stored/acquire.c
@@ -378,6 +378,29 @@ DCR *acquire_device_for_append(DCR *dcr)
           if (dev->num_writers == 0) {
              memcpy(&dev->VolCatInfo, &dcr->VolCatInfo, sizeof(dev->VolCatInfo));
           }
+
+          /*
+           *      Insanity check 
+           *
+           * Check to see if the tape position as defined by the OS is
+           *  the same as our concept.  If it is not, we bail out, because
+           *  it means the user has probably manually rewound the tape.
+           * Note, we check only if num_writers == 0, but this code will
+           *  also work fine for any number of writers. If num_writers > 0,
+           *  we probably should cancel all jobs using this device, or 
+           *  perhaps even abort the SD, or at a minimum, mark the tape
+           *  in error.  Another strategy with num_writers == 0, would be
+           *  to rewind the tape and do a new eod() request.
+           */
+          if (dev->is_tape() && dev->num_writers == 0) {
+             int32_t file = dev->get_os_tape_file();
+             if (file >= 0 && file != (int32_t)dev->get_file()) {
+                Jmsg(jcr, M_FATAL, 0, _("Invalid tape position on volume \"%s\"" 
+                     " on device %s. Expected %d, got %d\n"), 
+                     dev->VolHdr.VolumeName, dev->print_name(), dev->get_file(), file);
+                goto get_out;
+             }
+          }
       }
    } else {
       /* Not already in append mode, so mount the device */