#
# Bacula(R) - The Network Backup Solution
#
-# Copyright (C) 2000-2015 Kern Sibbald
-# Copyright (C) 2000-2014 Free Software Foundation Europe e.V.
+# Copyright (C) 2000-2016 Kern Sibbald
#
# The original author of Bacula is Kern Sibbald, with contributions
# from many others, a complete list can be found in the file AUTHORS.
# operations used by Bacula:
#
# free (no arguments)
-# Scan the device and report the available space. It returns:
-# Prints on the first output line the free space available in bytes.
-# If an error occurs, prints a negative number (-errno), followed,
-# on the second line, by an error message.
+# Scan the device and report the available space. It returns:
+# Prints on the first output line the free space available in bytes.
+# If an error occurs, prints a negative number (-errno), followed,
+# on the second line, by an error message.
#
# write op filename
-# Write a part file to disk.
-# This operation needs two additional arguments.
-# The first (op) indicates to
-# 0 -- append
-# 1 -- first write to a blank disk
-# 2 -- blank or truncate a disk
+# Write a part file to disk.
+# This operation needs two additional arguments.
+# The first (op) indicates to
+# 0 -- append
+# 1 -- first write to a blank disk
+# 2 -- blank or truncate a disk
#
-# The second is the filename to write
+# The second is the filename to write
#
# operations available but not used by Bacula:
#
# test Scan the device and report the information found.
-# This operation needs no further arguments.
+# This operation needs no further arguments.
# prepare Prepare a DVD+/-RW for being used by Bacula.
-# Note: This is only useful if you already have some
-# non-Bacula data on a medium, and you want to use
-# it with Bacula. Don't run this on blank media, it
-# is useless.
+# Note: This is only useful if you already have some
+# non-Bacula data on a medium, and you want to use
+# it with Bacula. Don't run this on blank media, it
+# is useless.
#
#
# $Id$
# dvd-writepart doesn't not always need to know the free space).
#
# The following methods are implemented:
-# __init__ we need that...
-# __repr__ this seems to be a good idea to have.
-# Quite minimalistic implementation, though.
-# __str__ For casts to string. Return the current disk information
-# is_empty Returns TRUE if the disk is empty, blank... this needs more
-# work, especially concerning non-RW media and blank vs. no
-# filesystem considerations. Here, we should also look for
-# other filesystems - probably we don't want to silently
-# overwrite UDF or ext2 or anything not mentioned in fstab...
-# (NB: I don't think it is a problem)
-# free Returns the available free space.
-# write Writes one part file to disk, either starting a new file
-# system on disk, or appending to it.
-# This method should also prepare a blank disk so that a
-# certain part of the disk is used to allow detection of a
-# used disk by all / more disk drives.
-# prepare Blank the device
+# __init__ we need that...
+# __repr__ this seems to be a good idea to have.
+# Quite minimalistic implementation, though.
+# __str__ For casts to string. Return the current disk information
+# is_empty Returns TRUE if the disk is empty, blank... this needs more
+# work, especially concerning non-RW media and blank vs. no
+# filesystem considerations. Here, we should also look for
+# other filesystems - probably we don't want to silently
+# overwrite UDF or ext2 or anything not mentioned in fstab...
+# (NB: I don't think it is a problem)
+# free Returns the available free space.
+# write Writes one part file to disk, either starting a new file
+# system on disk, or appending to it.
+# This method should also prepare a blank disk so that a
+# certain part of the disk is used to allow detection of a
+# used disk by all / more disk drives.
+# prepare Blank the device
#
###############################################################################
def __init__(self, devicename):
self.growcmd += " -quiet"
if self.is4gbsupported():
- self.growcmd += " -use-the-force-luke=4gms"
+ self.growcmd += " -use-the-force-luke=4gms"
self.growparams = " -A 'Bacula Data' -input-charset=default -iso-level 3 -pad " + \
- "-p 'dvd-handler / growisofs' -sysid 'BACULADATA' -R"
+ "-p 'dvd-handler / growisofs' -sysid 'BACULADATA' -R"
return
def __str__(self):
if not self.freespace_collected:
- self.collect_freespace();
+ self.collect_freespace();
if not self.mediumtype_collected:
- self.collect_mediumtype();
+ self.collect_mediumtype();
self.me = "Class disk, initialized with device '" + self.device + "'\n"
self.me += "type = '" + self.disktype + "' mode='" + self.diskmode + "' status = '" + self.diskstatus + "'\n"
processi = popen2.Popen4("uname -s -r")
status = processi.wait()
if not os.WIFEXITED(status):
- return 1
+ return 1
if os.WEXITSTATUS(status) != 0:
- return 1
+ return 1
strres = processi.fromchild.readline()[0:-1]
version = re.search(r"Linux (\d+)\.(\d+)\.(\d+)", strres)
if not version: # Non-Linux: allow
- return 1
+ return 1
if (int(version.group(1)) > 2) or (int(version.group(2)) > 6) or ((int(version.group(1)) == 2) and (int(version.group(2)) == 6) and (int(version.group(3)) >= 8)):
- return 1
+ return 1
else:
- return 0
+ return 0
def collect_freespace(self): # Collects current free space
self.cmd = self.growcmd + " -F " + self.device
processi = popen2.Popen4(self.cmd)
status = processi.wait()
if not os.WIFEXITED(status):
- raise DVDError(0, "growisofs process did not exit correctly.")
+ raise DVDError(0, "growisofs process did not exit correctly.")
result = processi.fromchild.read()
if os.WEXITSTATUS(status) != 0:
- if (os.WEXITSTATUS(status) & 0x7F) == errno.ENOSPC:
- # Kludge to force dvd-handler to return a free space of 0
- self.next_session = 1
- self.capacity = 1
- self.freespace_collected = 1
- return
- else:
- raise DVDError(os.WEXITSTATUS(status), "growisofs returned with an error " + result + ". Please check your are using a patched version of dvd+rw-tools.")
+ if (os.WEXITSTATUS(status) & 0x7F) == errno.ENOSPC:
+ # Kludge to force dvd-handler to return a free space of 0
+ self.next_session = 1
+ self.capacity = 1
+ self.freespace_collected = 1
+ return
+ else:
+ raise DVDError(os.WEXITSTATUS(status), "growisofs returned with an error " + result + ". Please check your are using a patched version of dvd+rw-tools.")
next_sess = re.search(r"\snext_session=(\d+)\s", result, re.MULTILINE)
capa = re.search(r"\scapacity=(\d+)\s", result, re.MULTILINE)
if next_sess and capa:
- self.next_session = long(next_sess.group(1))
- self.capacity = long(capa.group(1))
-
- # testing cheat (emulate 4GB boundary at 100MB)
- #if self.next_session > 100000000:
- # self.capacity = self.next_session
+ self.next_session = long(next_sess.group(1))
+ self.capacity = long(capa.group(1))
+
+ # testing cheat (emulate 4GB boundary at 100MB)
+ #if self.next_session > 100000000:
+ # self.capacity = self.next_session
else:
- raise DVDError(0, "Cannot get next_session and capacity from growisofs.\nReturned: " + result)
+ raise DVDError(0, "Cannot get next_session and capacity from growisofs.\nReturned: " + result)
self.freespace_collected = 1
return
processi = popen2.Popen4(cmd)
status = processi.wait()
if not os.WIFEXITED(status):
- raise DVDError(0, self.dvdrwmediainfo + " process did not exit correctly.")
+ raise DVDError(0, self.dvdrwmediainfo + " process did not exit correctly.")
if os.WEXITSTATUS(status) != 0:
- raise DVDError(0, "Cannot get media info from " + self.dvdrwmediainfo)
- return
+ raise DVDError(0, "Cannot get media info from " + self.dvdrwmediainfo)
+ return
result = processi.fromchild.read()
hardware = re.search(r"INQUIRY:\s+(.*)\n", result, re.MULTILINE)
status = re.search(r"\sDisc status:\s+(.*)\n", result, re.MULTILINE)
if hardware:
- self.hardwaredevice = hardware.group(1)
+ self.hardwaredevice = hardware.group(1)
if mediatype:
- self.disktype = mediatype.group(2)
+ self.disktype = mediatype.group(2)
else:
- raise DVDError(0, "Media type not found in " + self.dvdrwmediainfo + " output")
+ raise DVDError(0, "Media type not found in " + self.dvdrwmediainfo + " output")
if self.disktype == "DVD-RW":
- if mediamode:
- self.diskmode = mediamode.group(1)
- else:
- raise DVDError(0, "Media mode not found for DVD-RW in " + self.dvdrwmediainfo + " output")
+ if mediamode:
+ self.diskmode = mediamode.group(1)
+ else:
+ raise DVDError(0, "Media mode not found for DVD-RW in " + self.dvdrwmediainfo + " output")
if status:
- self.diskstatus = status.group(1)
+ self.diskstatus = status.group(1)
else:
- raise DVDError(0, "Disc status not found in " + self.dvdrwmediainfo + " output")
+ raise DVDError(0, "Disc status not found in " + self.dvdrwmediainfo + " output")
self.mediumtype_collected = 1
def is_empty(self):
if not self.freespace_collected:
- self.collect_freespace();
+ self.collect_freespace();
return 0 == self.next_session
def is_RW(self):
if not self.mediumtype_collected:
- self.collect_mediumtype();
+ self.collect_mediumtype();
return "DVD-RW" == self.disktype or "DVD+RW" == self.disktype or "DVD-RAM" == self.disktype
def is_plus_RW(self):
if not self.mediumtype_collected:
- self.collect_mediumtype();
+ self.collect_mediumtype();
return "DVD+RW" == self.disktype
def is_minus_RW(self):
if not self.mediumtype_collected:
- self.collect_mediumtype();
+ self.collect_mediumtype();
return "DVD-RW" == self.disktype
def is_restricted_overwrite(self):
if not self.mediumtype_collected:
- self.collect_mediumtype();
+ self.collect_mediumtype();
return self.diskmode == "Restricted Overwrite"
def is_blank(self):
if not self.mediumtype_collected:
- self.collect_mediumtype();
+ self.collect_mediumtype();
return self.diskstatus == "blank"
def free(self):
if not self.freespace_collected:
- self.collect_freespace();
+ self.collect_freespace();
fr = self.capacity-self.next_session-self.margin
if fr < 0:
- return 0
+ return 0
else:
- return fr
+ return fr
def term_handler(self, signum, frame):
print 'dvd-handler: Signal term_handler called with signal', signum
if self.pid != 0:
- print "dvd-handler: Sending SIGTERM to pid", self.pid
- os.kill(self.pid, signal.SIGTERM)
- time.sleep(10)
- print "dvd-handler: Sending SIGKILL to pid", self.pid
- os.kill(self.pid, signal.SIGKILL)
- sys.exit(1)
+ print "dvd-handler: Sending SIGTERM to pid", self.pid
+ os.kill(self.pid, signal.SIGTERM)
+ time.sleep(10)
+ print "dvd-handler: Sending SIGKILL to pid", self.pid
+ os.kill(self.pid, signal.SIGKILL)
+ sys.exit(1)
def write(self, newvol, partfile):
# Blank DVD+RW when there is no data on it
if newvol and self.is_plus_RW() and self.is_blank():
- print "DVD+RW looks brand-new, blank it to fix some DVD-writers bugs."
- self.blank()
- print "Done, now writing the part file."
+ print "DVD+RW looks brand-new, blank it to fix some DVD-writers bugs."
+ self.blank()
+ print "Done, now writing the part file."
if newvol and 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()
- print "Done, now writing the part file."
+ print "DVD-RW is in " + self.diskmode + " mode, reformating it to Restricted Overwrite"
+ self.reformat_minus_RW()
+ print "Done, now writing the part file."
cmd = self.growcmd + self.growparams
if newvol:
- # Ignore any existing iso9660 filesystem - used for truncate
- if newvol == 2:
- cmd += " -use-the-force-luke=tty"
- cmd += " -Z "
+ # Ignore any existing iso9660 filesystem - used for truncate
+ if newvol == 2:
+ cmd += " -use-the-force-luke=tty"
+ cmd += " -Z "
else:
- cmd += " -M "
+ cmd += " -M "
cmd += self.device + " " + str(partfile)
print "Running " + cmd
oldsig = signal.signal(signal.SIGTERM, self.term_handler)
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()
+ 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 not os.WIFEXITED(status):
- raise DVDError(0, cmd + " process did not exit correctly, signal/status " + str(status))
+ raise DVDError(0, cmd + " process did not exit correctly, signal/status " + str(status))
if os.WEXITSTATUS(status) != 0:
- raise DVDError(os.WEXITSTATUS(status), cmd + " exited with status " + str(os.WEXITSTATUS(status)) + ", signal/status " + str(status))
+ 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")
+ 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
+ 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
+ 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
+ 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
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()
+ 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))
+ 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"
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()
+ 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))
+ 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
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()
+ 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))
+ raise DVDError(os.WEXITSTATUS(status), cmd + " exited with status " + str(os.WEXITSTATUS(status)) + ", signal/status " + str(status))
# class disk ends here.
self.errno = errno
self.value = value
if self.value[-1] == '\n':
- self.value = self.value[0:-1]
+ self.value = self.value[0:-1]
def __str__(self):
return str(self.value) + " || errno = " + str(self.errno) + " (" + os.strerror(self.errno & 0x7F) + ")"
where DEVICE is a device name like /dev/sr0 or /dev/dvd.
Operations:
-test Scan the device and report the information found.
- This operation needs no further arguments.
-free Scan the device and report the available space.
-write Write a part file to disk.
- This operation needs two additional arguments.
- The first indicates to append (0), restart the
- disk (1) or restart existing disk (2). The second
- is the file to write.
+test Scan the device and report the information found.
+ This operation needs no further arguments.
+free Scan the device and report the available space.
+write Write a part file to disk.
+ This operation needs two additional arguments.
+ The first indicates to append (0), restart the
+ disk (1) or restart existing disk (2). The second
+ is the file to write.
prepare Prepare a DVD+/-RW for being used by Bacula.
- Note: This is only useful if you already have some
- non-Bacula data on a medium, and you want to use
- it with Bacula. Don't run this on blank media, it
- is useless.
+ Note: This is only useful if you already have some
+ non-Bacula data on a medium, and you want to use
+ it with Bacula. Don't run this on blank media, it
+ is useless.
"""
sys.exit(1)
if "free" == sys.argv[2]:
if len(sys.argv) == 3:
try:
- free = dvd.free()
+ free = dvd.free()
except DVDError, e:
- if e.errno != 0:
- print -e.errno
- else:
- print errno.EPIPE
- print str(e)
+ if e.errno != 0:
+ print -e.errno
+ else:
+ print errno.EPIPE
+ print str(e)
else:
- print free
- print "No Error reported."
+ print free
+ print "No Error reported."
else:
print "Wrong number of arguments for free operation. Wanted 3 got", len(sys.argv)
usage()
elif "prepare" == sys.argv[2]:
if len(sys.argv) == 3:
try:
- dvd.prepare()
+ dvd.prepare()
except DVDError, e:
- print "Error while preparing medium: ", str(e)
- if e.errno != 0:
- sys.exit(e.errno & 0x7F)
- else:
- sys.exit(errno.EPIPE)
+ print "Error while preparing medium: ", str(e)
+ if e.errno != 0:
+ sys.exit(e.errno & 0x7F)
+ else:
+ sys.exit(errno.EPIPE)
else:
- print "Medium prepared successfully."
+ print "Medium prepared successfully."
else:
print "Wrong number of arguments for prepare operation. Wanted 3 got", len(sys.argv)
usage()
elif "write" == sys.argv[2]:
if len(sys.argv) == 5:
try:
- dvd.write(long(sys.argv[3]), sys.argv[4])
+ dvd.write(long(sys.argv[3]), sys.argv[4])
except DVDError, e:
- print "Error while writing part file: ", str(e)
- if e.errno != 0:
- sys.exit(e.errno & 0x7F)
- else:
- sys.exit(errno.EPIPE)
+ print "Error while writing part file: ", str(e)
+ if e.errno != 0:
+ sys.exit(e.errno & 0x7F)
+ else:
+ sys.exit(errno.EPIPE)
else:
- print "Part file " + sys.argv[4] + " successfully written to disk."
+ print "Part file " + sys.argv[4] + " successfully written to disk."
else:
print "Wrong number of arguments for write operation. Wanted 5 got", len(sys.argv)
usage()
projects / bacula / bacula / blobdiff