In some cases, exception happened, default handling is called. However, user may not like the handling, want to specify a handler for these exceptions.
Add an exception handle check function. Call it where exceptions happened, and specify a extra special handler. If user want the special handler handles this exception, related cmdline is added. Then Dracut will check the cmdline, if related cmdline exists, call the specified handler; if not, call the default handler. The function can be called like below: exception_handle_check -h continue_on_fail Signed-off-by: Baoquan He <[email protected]> --- modules.d/99base/dracut-lib.sh | 40 ++++++++++++++++++++++++++++++++++++++++ 1 files changed, 40 insertions(+), 0 deletions(-) diff --git a/modules.d/99base/dracut-lib.sh b/modules.d/99base/dracut-lib.sh index cc6c7e8..35ed3a3 100755 --- a/modules.d/99base/dracut-lib.sh +++ b/modules.d/99base/dracut-lib.sh @@ -938,6 +938,46 @@ emergency_shell() [ -e /run/initramfs/.die ] && exit 1 } +exception_handle_check() +{ + local action_wanted + if [ "$1" = "-h" ]; then + [ $# -le 1 ] && echo "No exception handler specified" && emergency_shell + action_wanted=$2; + case "$action_wanted" in + continue_on_fail) + ;; + reboot) + ;; + emergency_shell) + ;; + *) + echo "Wrong exception handler input: $action_wanted" + action_wanted=emergency_shell + esac + else + action_wanted=emergency_shell + fi + + case "$action_wanted" in + continue_on_fail) + action=$(getarg rd.exceptionhandler=) + [ -z "$action" -o "$action" != "continue_on_fail" ] && emergency_shell + ;; + emergency_shell) + emergency_shell + ;; + reboot) + reboot -f + ;; + *) #default + ##impossible come here + ;; + esac + + return 0 +} + # Retain the values of these variables but ensure that they are unexported # This is a POSIX-compliant equivalent of bash's "export -n" export_n() -- 1.7.1 -- To unsubscribe from this list: send the line "unsubscribe initramfs" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
