[Fedora-livecd-list] [Patch] Trap copyFile errors

[Frederick Grose]

On Thu, Dec 16, 2010 at 8:22 PM, Frederick Grose <fgrose at gmail.com> wrote:

> From Bug 663849 <https://bugzilla.redhat.com/show_bug.cgi?id=663849> - copyFile
> failures not trapped in livecd-iso-to-disk


[Patch v2]


set -o pipefail reverses the logic of

if ! syslinux 2>&1 | grep -qe -d; then
   ...

in checkSyslinuxVersion()

so delay setting this option until just before it's needed for image copying.


Testing of more scenarios is requested...


   --Fred



    Trap copyFile errors

    'Set -o pipefail' is needed with the new starce-based copy function.
    Also, keep || clauses inprocess, so that an exit command applies to
    the main script and not just a subshell.

diff --git a/tools/livecd-iso-to-disk.sh b/tools/livecd-iso-to-disk.sh
index 51abc0c..dfabed7 100755
--- a/tools/livecd-iso-to-disk.sh
+++ b/tools/livecd-iso-to-disk.sh
@@ -688,13 +688,15 @@ fi
 [ -n "$efi" -a ! -d $USBMNT/EFI/boot ] && mkdir -p $USBMNT/EFI/boot

 # Live image copy
+set -o pipefail
 if [ "$isotype" = "live" -a -z "$skipcopy" ]; then
     echo "Copying live image to USB stick"
     [ ! -d $USBMNT/$LIVEOS ] && mkdir $USBMNT/$LIVEOS
     [ -n "$keephome" -a -f "$USBMNT/$HOMEFILE" ] && mv
$USBMNT/$HOMEFILE $USBMNT/$LIVEOS/$HOMEFILE
     if [ -n "$skipcompress" -a -f $CDMNT/LiveOS/squashfs.img ]; then
         mount -o loop $CDMNT/LiveOS/squashfs.img $CDMNT || exitclean
-        copyFile $CDMNT/LiveOS/ext3fs.img $USBMNT/$LIVEOS/ext3fs.img
|| (umount $CDMNT ; exitclean)
+        copyFile $CDMNT/LiveOS/ext3fs.img $USBMNT/$LIVEOS/ext3fs.img || {
+            umount $CDMNT ; exitclean ; }
         umount $CDMNT
     elif [ -f $CDMNT/LiveOS/squashfs.img ]; then

copyFile $CDMNT/LiveOS/squashfs.img $USBMNT/$LIVEOS/squashfs.img ||
exitclean
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