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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-06-03 05:42:59 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-06-03 05:42:59 +0000 |
commit | c45bd7dca7394d3a25f5bbf416f3b75c50759190 (patch) | |
tree | f7dbbfcc2f6b787eea456d1f1e28525ca2ceb9ba /docs/example_hook | |
parent | Initial commit. (diff) | |
download | initramfs-tools-upstream.tar.xz initramfs-tools-upstream.zip |
Adding upstream version 0.143.upstream/0.143upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'docs/example_hook')
-rw-r--r-- | docs/example_hook | 68 |
1 files changed, 68 insertions, 0 deletions
diff --git a/docs/example_hook b/docs/example_hook new file mode 100644 index 0000000..85ff6c6 --- /dev/null +++ b/docs/example_hook @@ -0,0 +1,68 @@ +#!/bin/sh +# +# +# This is an example hook script. It will be run by 'mkinitramfs' +# when it creates the image. It's job is to decide which files to +# install, then install them into the staging area, where the +# initramfs is being created. This happens when a new 'linux-image' +# package is installed, or when the administrator runs 'mkinitramfs' +# by hand to update an initramfs image. +# +# CONFDIR -- usually /etc/initramfs-tools, can be set on mkinitramfs +# command line. +# +# DESTDIR -- The staging directory where we are building the image. +# +# see initramfs-tools(7) + +# +# List the soft prerequisites here. This is a space separated list of +# names, of scripts that are in the same directory as this one, that +# must be run before this one can be. +# +PREREQ="" + +prereqs() +{ + echo "$PREREQ" +} + +case $1 in +# get pre-requisites +prereqs) + prereqs + exit 0 + ;; +esac + + +# You can do anything you need to from here on. +# + +# Source the optional 'hook-functions' scriptlet, if you need the +# functions defined within it. Read it to see what is available to +# you. It contains functions for copying dynamically linked program +# binaries, and kernel modules into the DESTDIR. +# +. /usr/share/initramfs-tools/hook-functions + + +# If this hook script is a conffile (and thus stored in +# /etc/mkinitramfs/hooks), it must take care to do the right thing +# when the package containing it is removed but not purged. There of +# course may be other reasons to have custom logic deciding what to +# install. The version variable may be useful for this. +# +if command -v myprog >/dev/null 2>&1; then + copy_exec /usr/bin/myprog usr/bin +fi + +# To accompany this, there should usually be a script for inside the +# initramfs named something like: +# +# "/etc/mkinitramfs/local-premount/myprog" +# +# ... and it should do what is necessary to have 'myprog' get run +# inside the early runtime environment. + +exit 0 |