[pkg-cryptsetup-devel] my stab at ask-once crypto

[Ross Boylan]

I tried the tweaks below to get the system to try the previous password
on later volumes before asking for another password.  Unfortunately, the
password entered always failed.  In other words,

	lastpass="$($KEYSCRIPT "$keyscriptarg")"
	if echo "$lastpass" | cryptsetup $PARAMS luksOpen "$src" "$dst"; then

is not the same as
	if "$KEYSCRIPT" "$keyscriptarg" | cryptsetup $PARAMS luksOpen \
		"$src" "$dst"; then

The first construct seems to capture the password I entered (as verified
by echo to the terminal), but it's not quite right.  Any ideas?

Ross

[some lines have been wrapped]
*** /lib/cryptsetup/cryptdisks.functions        2008-12-17
15:49:20.000000000 -0800
--- cryptdisks.functions        2009-02-27 17:03:19.000000000 -0800
***************
*** 297,303 ****
        PARAMS="$PARAMS --key-file=$key"

        while [ "$tried" -lt "$TRIES" ]; do
!               if [ -n "$KEYSCRIPT" ]; then
!                       if "$KEYSCRIPT" "$keyscriptarg" | cryptsetup
$PARAMS luksOpen "$src" "$dst"; then
                                break
                        fi
--- 297,309 ----
        PARAMS="$PARAMS --key-file=$key"

+       if [ -n "lastpass" ] ||
+          ! (echo "$lastpass" | cryptsetup $PARAMS luksOpen "$src"
"$dst"); then
        while [ "$tried" -lt "$TRIES" ]; do
!             if [ -n "$KEYSCRIPT" ]; then
! echo "try to execute $KEYSCRIPT"
!                  lastpass="$($KEYSCRIPT "$keyscriptarg")"
! echo $lastpass
! echo "Waswhat you entered"
!                       if echo "$lastpass" | cryptsetup $PARAMS
luksOpen "$src" "$dst"; then
                                break
                        fi
***************
*** 313,316 ****
--- 319,323 ----
                fi
        done
+       fi

        if [ -n "$CHECK" ] && ! "$CHECK" "/dev/mapper/$dst" $CHECKARGS;
then
***************
*** 602,605 ****
--- 609,613 ----
                handle_crypttab_line_start "$dst" "$src" "$key" "$opts"
<&3
        done 3<&1
+       unset lastpass
        umount_fs