pushed
Am 01.08.2012 12:07, schrieb Dave Young:
>
> Kdump dracut hooks need to enter emergency shell, currently it directly call
> "sh -i -l", with recent dracut this does not work anymore without proper ctty.
>
> It will be convinient to seperate a standalone function _emergency_shell for
> dracut modules to call.
>
> ---
> modules.d/99base/dracut-lib.sh | 58
> ++++++++++++++++++++++-------------------
> 1 file changed, 32 insertions(+), 26 deletions(-)
>
> --- dracut.orig/modules.d/99base/dracut-lib.sh
> +++ dracut/modules.d/99base/dracut-lib.sh
> @@ -864,6 +864,37 @@ wait_for_loginit()
> rm -f /run/initramfs/loginit.pipe /run/initramfs/loginit.pid
> }
>
> +_emergency_shell()
> +{
> + local _name="$1"
> + if [ -x /lib/systemd/systemd ]; then
> + > /.console_lock
> + echo "PS1=\"$_name:\${PWD}# \"" >/etc/profile
> + systemctl start emergency.service
> + debug_off
> + while [ -e /.console_lock ]; do sleep 1; done
> + debug_on
> + else
> + echo "Dropping to debug shell."
> + echo
> + export PS1="$_name:\${PWD}# "
> + [ -e /.profile ] || >/.profile
> +
> + _ctty="$(getarg rd.ctty=)" && _ctty="/dev/${_ctty##*/}"
> + if [ -z "$_ctty" ]; then
> + _ctty=console
> + while [ -f /sys/class/tty/$_ctty/active ]; do
> + _ctty=$(cat /sys/class/tty/$_ctty/active)
> + _ctty=${_ctty##* } # last one in the list
> + done
> + _ctty=/dev/$_ctty
> + fi
> + [ -c "$_ctty" ] || _ctty=/dev/tty1
> + strstr "$(setsid --help 2>/dev/null)" "ctty" && CTTY="-c"
> + setsid $CTTY /bin/sh -i -l 0<$_ctty 1>$_ctty 2>&1
> + fi
> +}
> +
> emergency_shell()
> {
> local _ctty
> @@ -883,32 +914,7 @@ emergency_shell()
> echo
>
> if getargbool 1 rd.shell -d -y rdshell || getarg rd.break -d rdbreak;
> then
> - if [ -x /lib/systemd/systemd ]; then
> - > /.console_lock
> - echo "PS1=\"$_rdshell_name:\${PWD}# \"" >/etc/profile
> - systemctl start emergency.service
> - debug_off
> - while [ -e /.console_lock ]; do sleep 1; done
> - debug_on
> - else
> - echo "Dropping to debug shell."
> - echo
> - export PS1="$_rdshell_name:\${PWD}# "
> - [ -e /.profile ] || >/.profile
> -
> - _ctty="$(getarg rd.ctty=)" && _ctty="/dev/${_ctty##*/}"
> - if [ -z "$_ctty" ]; then
> - _ctty=console
> - while [ -f /sys/class/tty/$_ctty/active ]; do
> - _ctty=$(cat /sys/class/tty/$_ctty/active)
> - _ctty=${_ctty##* } # last one in the list
> - done
> - _ctty=/dev/$_ctty
> - fi
> - [ -c "$_ctty" ] || _ctty=/dev/tty1
> - strstr "$(setsid --help 2>/dev/null)" "ctty" && CTTY="-c"
> - setsid $CTTY /bin/sh -i -l 0<$_ctty 1>$_ctty 2>&1
> - fi
> + _emergency_shell $_rdshell_name
> else
> warn "$action has failed. To debug this issue add \"rd.shell\" to
> the kernel command line."
> # cause a kernel panic
> --
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