Merging casper 1.216.

[live-boot-grml.git] / scripts / live

diff --git a/scripts/live b/scripts/live
index 6f4f5c1..26a6a46 100755 (executable)
--- a/scripts/live
+++ b/scripts/live
@@ -1885,6 +1885,28 @@ mountroot ()
                mount -n -o bind /dev "${rootmnt}/dev"
        fi
 
+       # Open up two fifo's fd's for debconf-communicate to use. Speeds up
+       # the live-initramfs process considerably.
+       log_begin_msg "Creating debconf-communicate fifo mechanism"
+       mkfifo /tmp/debconf-in.fifo
+       mkfifo /tmp/debconf-out.fifo
+
+       chroot /root debconf-communicate -fnoninteractive live-initramfs > /tmp/debconf-out.fifo < /tmp/debconf-in.fifo &
+
+       # Save the PID so it can be killed later.
+       DEBCONF_COMMUNICATE_PID="$!"
+
+       if [ ! -p /tmp/debconf-in.fifo ] || [ ! -p /tmp/debconf-out.fifo ]
+       then
+               log_warning_msg "failed to setup debconf-communicate channel"
+       fi
+       log_end_msg
+
+       # Order matters!
+       # These file descriptors must stay open until we're finished with
+       # debconf-communicate.
+       exec 4</tmp/debconf-out.fifo 3>/tmp/debconf-in.fifo
+
        maybe_break live-bottom
        log_begin_msg "Running /scripts/live-bottom\n"
 
@@ -1896,6 +1918,13 @@ mountroot ()
                umount "${rootmnt}/dev"
        fi
 
+       # Kill the debconf-communicate instance and close fd's associated with·
+       # debconf-communicate.
+       kill $DEBCONF_COMMUNICATE_PID
+       exec 3>&- 4<&-
+       rm -f /tmp/debconf-in.fifo
+       rm -f /tmp/debconf-out.fifo
+
        exec 1>&6 6>&-
        exec 2>&7 7>&-
        kill ${tailpid}