+ raise DVDError(os.WEXITSTATUS(status), cmd + " exited with status " + str(os.WEXITSTATUS(status)) + ", signal/status " + str(status))
+
+ def prepare(self):
+ if not self.is_RW():
+ raise DVDError(0, "I won't prepare a non-rewritable medium")
+
+ # Blank DVD+RW when there is no data on it
+ if self.is_plus_RW() and self.is_blank():
+ print "DVD+RW looks brand-new, blank it to fix some DVD-writers bugs."
+ self.blank()
+ return # It has been completely blanked: Medium is ready to be used by Bacula
+
+ if self.is_minus_RW() and (not self.is_restricted_overwrite()):
+ print "DVD-RW is in " + self.diskmode + " mode, reformating it to Restricted Overwrite"
+ self.reformat_minus_RW()
+ return # Reformated: Medium is ready to be used by Bacula
+
+ # TODO: Check if /dev/fd/0 and /dev/zero exists, otherwise, run self.blank()
+ if not os.path.exists("/dev/fd/0") or not os.path.exists("/dev/zero"):
+ print "/dev/fd/0 or /dev/zero doesn't exist, blank the medium completely."
+ self.blank()
+ return
+
+ cmd = self.dd + " if=/dev/zero bs=1024 count=512 | " + self.growcmd + " -Z " + self.device + "=/dev/fd/0"
+ print "Running " + cmd
+ oldsig = signal.signal(signal.SIGTERM, self.term_handler)
+ proc = popen2.Popen4(cmd)
+ self.pid = proc.pid
+ status = proc.poll()
+ while status == -1:
+ line = proc.fromchild.readline()
+ while len(line) > 0:
+ print line,
+ line = proc.fromchild.readline()
+ time.sleep(1)
+ status = proc.poll()
+ self.pid = 0
+ print
+ signal.signal(signal.SIGTERM, oldsig)
+ if os.WEXITSTATUS(status) != 0:
+ raise DVDError(os.WEXITSTATUS(status), cmd + " exited with status " + str(os.WEXITSTATUS(status)) + ", signal/status " + str(status))
+
+ def blank(self):
+ cmd = self.growcmd + " -Z " + self.device + "=/dev/zero"
+ print "Running " + cmd
+ oldsig = signal.signal(signal.SIGTERM, self.term_handler)
+ proc = popen2.Popen4(cmd)
+ self.pid = proc.pid
+ status = proc.poll()
+ while status == -1:
+ line = proc.fromchild.readline()
+ while len(line) > 0:
+ print line,
+ line = proc.fromchild.readline()
+ time.sleep(1)
+ status = proc.poll()
+ self.pid = 0
+ print
+ signal.signal(signal.SIGTERM, oldsig)
+ if os.WEXITSTATUS(status) != 0:
+ raise DVDError(os.WEXITSTATUS(status), cmd + " exited with status " + str(os.WEXITSTATUS(status)) + ", signal/status " + str(status))
+
+ def reformat_minus_RW(self):
+ cmd = self.dvdrwformat + " -force " + self.device
+ print "Running " + cmd
+ oldsig = signal.signal(signal.SIGTERM, self.term_handler)
+ proc = popen2.Popen4(cmd)
+ self.pid = proc.pid
+ status = proc.poll()
+ while status == -1:
+ line = proc.fromchild.readline()
+ while len(line) > 0:
+ print line,
+ line = proc.fromchild.readline()
+ time.sleep(1)
+ status = proc.poll()
+ self.pid = 0
+ print
+ signal.signal(signal.SIGTERM, oldsig)
+ if os.WEXITSTATUS(status) != 0:
+ raise DVDError(os.WEXITSTATUS(status), cmd + " exited with status " + str(os.WEXITSTATUS(status)) + ", signal/status " + str(status))