Fix posix violation in grml-live-remaster

[grml-live.git] / remaster / grml-live-remaster

diff --git a/remaster/grml-live-remaster b/remaster/grml-live-remaster
index 9d62cf7..456dbab 100755 (executable)
--- a/remaster/grml-live-remaster
+++ b/remaster/grml-live-remaster
@@ -1,7 +1,10 @@
 #!/bin/sh
 # Filename:      grml-live-remaster
 # Purpose:       remaster a grml from the live cd
-# Authors:       grml-team (grml.org), (c) Michael Schierl <schierlm@gmx.de>, (c) Michael Prokop <mika@grml.org>
+# Authors:       grml-team (grml.org),
+#                (c) Michael Schierl <schierlm@gmx.de>,
+#                (c) Michael Prokop <mika@grml.org>,
+#                (c) Thorsten Glaser <tg@mirbsd.org>
 # Bug-Reports:   see http://grml.org/bugs/
 # License:       This file is licensed under the GPL v2 or any later version.
 ################################################################################
@@ -9,6 +12,13 @@
 # this script currently lacks LOTS of error checking code... any help welcome...
 ################################################################################
 
+# define function getfilesize before "set -e"
+if stat --help >/dev/null 2>&1; then
+  getfilesize='stat -c %s'      # GNU stat
+else
+  getfilesize='stat -f %z'      # BSD stat
+fi
+
 set -e # exit on any error
 
 VERSION='0.0.2'
@@ -20,7 +30,19 @@ GRML_LIVE_EDITOR=${VISUAL:-${EDITOR:-vi}}
 # }}}
 
 # make sure we have what we need {{{
-check4progs mkisofs mksquashfs || exit 1
+check4progs mkisofs stat || exit 1
+
+# allow overriding via environment:
+if [ -z "$MKSQUASHFS" ] ; then
+  if which mksquashfs-lzma >/dev/null 2>&1 ; then
+    MKSQUASHFS=mksquashfs-lzma
+  elif which mksquashfs >/dev/null 2>&1 ; then
+    MKSQUASHFS=mksquashfs
+  else
+    echo "Error: neither mksquashfs-lzma nor mksquashfs present. Exiting."
+    exit 1
+  fi
+fi
 check4root || exit 1
 # }}}
 
@@ -33,7 +55,7 @@ if [ x"$1" == x ]; then
    echo "  first, because grml-live-remaster will need a lot ot RAM."
    echo ""
    echo "Please report bugs and feature requests: http://grml.org/bugs/"
-   exit -1
+   exit 1
 fi
 
 if [ ! -d /remaster ]; then
@@ -97,7 +119,7 @@ sed 3,4d "${BOOTSTUFF}"/boot.msg \
 sed 1,2d /remaster/msg >>/remaster/iso/boot/isolinux/boot.msg
 
 mkdir /remaster/iso/live
-mksquashfs /remaster/chroot /remaster/iso/live/"$(basename $SQUASHFS_FILE)"
+$MKSQUASHFS /remaster/chroot /remaster/iso/live/"$(basename $SQUASHFS_FILE)"
 umount /remaster/chroot /remaster/cdrom
 
 if [ -f /remaster/iso/boot/isolinux/isolinux.bin ] ; then
@@ -109,9 +131,17 @@ else
 fi
 
 mkisofs -b $ISOLINUX -no-emul-boot -c $ISOLINUX_BOOTCAT \
-        -boot-info-table -l -r -J -o "$1" /remaster/iso
+        -boot-info-table -boot-load-size 4 -no-pad \
+        -l -r -J -o "$1" /remaster/iso
+# pad for partition table
+siz=$($getfilesize "$1")
+cyls=$((siz / 512 / 32 / 16 + 1))       # C=$cyls H=16 S=32 (= 256 KiB units)
+siz=$((cyls * 16 * 32 * 512))           # size after padding
+dd if=/dev/zero bs=1 count=1 seek=$((siz - 1)) of="$1" 2>/dev/null
 rm -R /remaster/iso
 
+# here is the place where we could apply bootgrub.mksh
+
 echo ""
 echo "ISO generation complete:"
 ls --color -l "$1"