-#!/bin/bash
+#!@PYTHON@
#
# Bacula interface to growisofs, used to write to DVD+/-R(W)
#
#
# If you set in your Device resource
#
-# Write Part Command = "path-to-this-script/dvd-writepart %n %a %v"
+# Write Part Command = "path-to-this-script/dvd-writepart %e %a %v"
# you will have the following input to this script:
#
# dvd-writepart "erase" "device" "part_filename"
-# $1 $2 $3
+# 1 2 3
#
# for example:
#
# dvd-writepart 0 /dev/hda File-0001
-MKISOFS=@MKISOFS@
-GROWISOFS=@GROWISOFS@
+mkisofs = "@MKISOFS@"
+growcmd = "@GROWISOFS@"
-# GROWARGS="-use-the-force-luke=tty -quiet"
-GROWARGS="-quiet"
+growcmd += " -use-the-force-luke=tty"
+growcmd += " -quiet"
-# Uncomment the following line if you do not want the tray to be reloaded
+# Comment the following line if you want the tray to be reloaded
# when writing ends.
-GROWARGS="${GROWARGS} -use-the-force-luke=notray"
+growcmd += " -use-the-force-luke=notray"
#### You should probably not modify anything below this line
-# If Linux kernel version >=2.6.8, allow a session to start beyond the
-# 4gb boundary.
-kver=`uname -r | cut -d. -f1,2`
-ksubver=`uname -r | cut -d. -f3 | cut -d- -f1`
-
-if test "a$kver" = "a2.6" ; then
- if test "$ksubver" -gt 7 ; then
- echo "Kernel version >= 2.6.8, allowing to cross the 4gb boundary."
- GROWARGS="${GROWARGS} -use-the-force-luke=4gms"
- fi
-fi
-
-if test $# -ne 3 ; then
- echo "usage: dvd-writepart part_number device part_filename"
- echo " Wrong number of arguments arguments given (!= 3)."
- exit 1
-fi
-
-# Setup arguments
-erase=$1
-dev=$2
-filename=$3
-
-if test $erase = 1 ; then
- arg="-Z"
-else
- arg="-M"
-fi
-
-# Starts growisofs
-echo Running ${GROWISOFS} ${GROWARGS} $arg $dev -R $filename...
-${GROWISOFS} ${GROWARGS} $arg $dev -R $filename &
-#bash -c "while [ 1 ]; do echo "G"; sleep 1; done" &
-growpid=$!
-parentpid=$$
-
-# Starts watchdog : checks if the parent is alive. If not, kill
-# growisofs.
-
-bash -c "rtn=0; while [ \$rtn = 0 ]; do sleep 5; ps -p $parentpid > /dev/null; rtn=\$?; done; echo \"Parent dead killing $growpid\"; kill $growpid; sleep 5; kill -9 $growpid" &
-watchpid=$!
-
-# Waits for growisofs to stop
-wait $growpid
-rtn=$?
-
-# Kill the watchdog
-kill -9 $watchpid
-
-exit $rtn
+import popen2
+import os
+import sys
+import time
+import signal
+
+pid=0
+
+def is4gbsupported():
+ processi = popen2.Popen4("uname -s -r")
+ status = processi.wait()
+ if not os.WIFEXITED(status):
+ print "dvd-writepart: Cannot execute uname, allowing to cross the 4gb boundary."
+ return 1
+ if os.WEXITSTATUS(status) != 0:
+ print "dvd-writepart: Cannot execute uname, allowing to cross the 4gb boundary."
+ return 1
+ strres = processi.fromchild.readline()[0:-1]
+ res = strres.split(" ")
+ if len(res) != 2:
+ print "dvd-writepart: Unable to parse uname (" + strres + "), allowing to cross the 4gb boundary."
+ return 1
+ if res[0] != "Linux":
+ print "dvd-writepart: The current OS is no Linux, allowing to cross the 4gb boundary."
+ return 1
+ ver = res[1].split(".")
+ if len(ver) < 3:
+ print "dvd-writepart: Unable to parse version string (" + res[1] + "), allowing to cross the 4gb boundary."
+ return 1
+ subver = ver[2].split("-")
+
+ if ((not ver[0].isdigit()) or (not ver[1].isdigit()) or (not subver[0].isdigit())):
+ print "dvd-writepart: Unable to parse version string (" + res[1] + "), allowing to cross the 4gb boundary."
+ return 1
+
+ if (int(ver[0]) > 2) or (int(ver[1]) > 6) or ((int(ver[0]) == 2) and (int(ver[1]) == 6) and (int(subver[0]) >= 8)):
+ print "dvd-writepart: Kernel version >=2.6.8, allowing to cross the 4gb boundary."
+ return 1
+ else:
+ print "dvd-writepart: Kernel version <2.6.8, not allowing to cross the 4gb boundary."
+ return 0
+
+def term_handler(signum, frame):
+ print 'dvd-writepart: Signal term_handler called with signal', signum
+ if pid != 0:
+ print "dvd-writepart: Sending SIGTERM to pid", pid
+ os.kill(pid, signal.SIGTERM)
+ time.sleep(3)
+ print "dvd-writepart: Sending SIGKILL to pid", pid
+ os.kill(pid, signal.SIGKILL)
+ sys.exit(1)
+
+if len(sys.argv) != 4:
+ print "dvd-writepart: Wrong number of arguments."
+ sys.exit(1)
+
+if is4gbsupported():
+ growcmd += " -use-the-force-luke=4gms"
+
+if sys.argv[1] == "0":
+ growcmd += " -M"
+else:
+ growcmd += " -Z"
+
+growcmd += " " + sys.argv[2] # device
+growcmd += " -R " + sys.argv[3] # filename
+
+#Test cmd:
+#growcmd = "bash -c \"while [ 1 ]; do echo \"G\"; sleep 5; done\""
+
+print "dvd-writepart: executing: " + growcmd
+
+signal.signal(signal.SIGTERM, term_handler)
+
+processi = popen2.Popen4(growcmd)
+pid = processi.pid
+status = processi.poll()
+while status == -1:
+ line = processi.fromchild.readline()
+ while len(line) > 0:
+ print line,
+ line = processi.fromchild.readline()
+ time.sleep(1)
+ status = processi.poll()
+
+if os.WEXITSTATUS(status) != 0:
+ print "dvd-writepart: Bad exit status " + str(os.WEXITSTATUS(status))
+ sys.exit(os.WEXITSTATUS(status))
+
projects / bacula / bacula / commitdiff