slackware-current/source/a/mkinitrd/setup.01.mkinitrd

#!/bin/sh
#BLURB="Generate /boot/initrd.gz for the generic kernel"

# First, clear the existing initrd-tree:
if [ -f $(readlink -f boot/vmlinuz-generic) -o -f $(readlink -f boot/vmlinuz-generic-smp) ]; then
  rm -rf boot/initrd-tree
fi

# Next, if boot/vmlinuz-generic is a symlink to a kernel, generate a ramdisk
# using the modules for that kernel:
KERNEL_SYMLINK="boot/vmlinuz-generic"
if [ -L $KERNEL_SYMLINK ]; then
  KERNEL_VERSION="$(readlink -f $KERNEL_SYMLINK | sed "s/-smp/_smp/g" | rev | cut -f 1 -d - | rev | sed "s/_smp/-smp/g")"
  # Sanity check. Not sure how/why, but there are reports we can arrive here
  # without a $KERNEL_VERSION. The only way I see how is if the symlink were
  # pointing to file with a malformed name
  # (i.e. not ${KERNEL_SYMLINK}-${KERNEL_VERSION}).
  # If ${KERNEL_VERSION} is blank, we'll bail out here.
  # Any information on known cases that might cause this would be appreciated.
  if [ ! "$KERNEL_VERSION" = "" ]; then
    dialog --title "GENERATING INITIAL RAMDISK" --infobox \
    "Generating an initial ramdisk for use with the $KERNEL_VERSION generic \
kernel. The initial ramdisk contains kernel modules needed to mount the \
root partition, and must be regenerated whenever the kernel is updated. To \
regenerate the initrd, select this setup script from within pkgtool, or run \
'geninitrd' which will produce an initial ramdisk (/boot/initrd.gz) for the \
kernel pointed to by the /$KERNEL_SYMLINK symlink." 9 68
    chroot . /usr/share/mkinitrd/mkinitrd_command_generator.sh -k $KERNEL_VERSION | sed "s/-c -k/-k/g" | chroot . bash 1> /dev/null 2> /dev/null
  else
    dialog --title "INTERNAL ERROR" --msgbox \
    "An internal error was detected. Please report the following information: \n\
KERNEL_SYMLINK = $KERNEL_SYMLINK \n\
KERNEL_SYMLINK (points to) = $(readlink -f $KERNEL_SYMLINK) \n\
KERNEL_VERSION (is blank) \n\
ls -l \$KERNEL_SYMLINK: \n\
$(ls -l $KERNEL_SYMLINK)" 0 0
  fi
fi

# If boot/vmlinuz-generic-smp is a symlink to a kernel, also include the
# modules for that kernel:
KERNEL_SYMLINK="boot/vmlinuz-generic-smp"
if [ -L $KERNEL_SYMLINK ]; then
  KERNEL_VERSION="$(readlink -f $KERNEL_SYMLINK | sed "s/-smp/_smp/g" | rev | cut -f 1 -d - | rev | sed "s/_smp/-smp/g")"
  # Sanity check. Not sure how/why, but there are reports we can arrive here
  # without a $KERNEL_VERSION. The only way I see how is if the symlink were
  # pointing to file with a malformed name
  # (i.e. not ${KERNEL_SYMLINK}-${KERNEL_VERSION}).
  # If ${KERNEL_VERSION} is blank, we'll bail out here.
  # Any information on known cases that might cause this would be appreciated.
  if [ ! "$KERNEL_VERSION" = "" ]; then
    dialog --title "GENERATING INITIAL RAMDISK" --infobox \
    "Generating an initial ramdisk for use with the $KERNEL_VERSION generic \
kernel. The initial ramdisk contains kernel modules needed to mount the \
root partition, and must be regenerated whenever the kernel is updated. To \
regenerate the initrd, select this setup script from within pkgtool, or run \
'geninitrd' which will produce an initial ramdisk (/boot/initrd.gz) for the \
kernel pointed to by the /$KERNEL_SYMLINK symlink." 9 68
    chroot . /usr/share/mkinitrd/mkinitrd_command_generator.sh -k $KERNEL_VERSION | sed "s/-c -k/-k/g" | chroot . bash 1> /dev/null 2> /dev/null
  else
    dialog --title "INTERNAL ERROR" --msgbox \
    "An internal error was detected. Please report the following information: \n\
KERNEL_SYMLINK = $KERNEL_SYMLINK \n\
KERNEL_SYMLINK (points to) = $(readlink -f $KERNEL_SYMLINK) \n\
KERNEL_VERSION (is blank) \n\
ls -l \$KERNEL_SYMLINK: \n\
$(ls -l $KERNEL_SYMLINK)" 0 0
  fi
fi