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Diffstat (limited to 'scripts/gen_initramfs.sh')
| -rwxr-xr-x | scripts/gen_initramfs.sh | 250 |
1 files changed, 0 insertions, 250 deletions
diff --git a/scripts/gen_initramfs.sh b/scripts/gen_initramfs.sh deleted file mode 100755 index 8ad0cd7..0000000 --- a/scripts/gen_initramfs.sh +++ /dev/null @@ -1,250 +0,0 @@ -#!/bin/sh -# Copyright (C) Martin Schlemmer <azarah@nosferatu.za.org> -# Copyright (C) 2006 Sam Ravnborg <sam@ravnborg.org> -# -# Released under the terms of the GNU GPL -# -# Generate a cpio packed initramfs. It uses gen_init_cpio to generate -# the cpio archive. -# This script assumes that gen_init_cpio is located in usr/ directory - -# error out on errors -set -e - -usage() { -cat << EOF -Usage: -$0 [-o <file>] [-l <dep_list>] [-u <uid>] [-g <gid>] {-d | <cpio_source>} ... - -o <file> Create initramfs file named <file> by using gen_init_cpio - -l <dep_list> Create dependency list named <dep_list> - -u <uid> User ID to map to user ID 0 (root). - <uid> is only meaningful if <cpio_source> is a - directory. "squash" forces all files to uid 0. - -g <gid> Group ID to map to group ID 0 (root). - <gid> is only meaningful if <cpio_source> is a - directory. "squash" forces all files to gid 0. - -d <date> Use date for all file mtime values - <cpio_source> File list or directory for cpio archive. - If <cpio_source> is a .cpio file it will be used - as direct input to initramfs. - -All options except -o and -l may be repeated and are interpreted -sequentially and immediately. -u and -g states are preserved across -<cpio_source> options so an explicit "-u 0 -g 0" is required -to reset the root/group mapping. -EOF -} - -# awk style field access -# $1 - field number; rest is argument string -field() { - shift $1 ; echo $1 -} - -filetype() { - local argv1="$1" - - # symlink test must come before file test - if [ -L "${argv1}" ]; then - echo "slink" - elif [ -f "${argv1}" ]; then - echo "file" - elif [ -d "${argv1}" ]; then - echo "dir" - elif [ -b "${argv1}" -o -c "${argv1}" ]; then - echo "nod" - elif [ -p "${argv1}" ]; then - echo "pipe" - elif [ -S "${argv1}" ]; then - echo "sock" - else - echo "invalid" - fi - return 0 -} - -print_mtime() { - local my_mtime="0" - - if [ -e "$1" ]; then - my_mtime=$(find "$1" -printf "%T@\n" | sort -r | head -n 1) - fi - - echo "# Last modified: ${my_mtime}" >> $cpio_list - echo "" >> $cpio_list -} - -list_parse() { - if [ -z "$dep_list" -o -L "$1" ]; then - return - fi - echo "$1" | sed 's/:/\\:/g; s/$/ \\/' >> $dep_list -} - -# for each file print a line in following format -# <filetype> <name> <path to file> <octal mode> <uid> <gid> -# for links, devices etc the format differs. See gen_init_cpio for details -parse() { - local location="$1" - local name="/${location#${srcdir}}" - # change '//' into '/' - name=$(echo "$name" | sed -e 's://*:/:g') - local mode="$2" - local uid="$3" - local gid="$4" - local ftype=$(filetype "${location}") - # remap uid/gid to 0 if necessary - [ "$root_uid" = "squash" ] && uid=0 || [ "$uid" -eq "$root_uid" ] && uid=0 - [ "$root_gid" = "squash" ] && gid=0 || [ "$gid" -eq "$root_gid" ] && gid=0 - local str="${mode} ${uid} ${gid}" - - [ "${ftype}" = "invalid" ] && return 0 - [ "${location}" = "${srcdir}" ] && return 0 - - case "${ftype}" in - "file") - str="${ftype} ${name} ${location} ${str}" - ;; - "nod") - local dev="`LC_ALL=C ls -l "${location}"`" - local maj=`field 5 ${dev}` - local min=`field 6 ${dev}` - maj=${maj%,} - - [ -b "${location}" ] && dev="b" || dev="c" - - str="${ftype} ${name} ${str} ${dev} ${maj} ${min}" - ;; - "slink") - local target=`readlink "${location}"` - str="${ftype} ${name} ${target} ${str}" - ;; - *) - str="${ftype} ${name} ${str}" - ;; - esac - - echo "${str}" >> $cpio_list - - return 0 -} - -unknown_option() { - printf "ERROR: unknown option \"$arg\"\n" >&2 - printf "If the filename validly begins with '-', " >&2 - printf "then it must be prefixed\n" >&2 - printf "by './' so that it won't be interpreted as an option." >&2 - printf "\n" >&2 - usage >&2 - exit 1 -} - -header() { - printf "\n#####################\n# $1\n" >> $cpio_list -} - -# process one directory (incl sub-directories) -dir_filelist() { - header "$1" - - srcdir=$(echo "$1" | sed -e 's://*:/:g') - dirlist=$(find "${srcdir}" -printf "%p %m %U %G\n" | LC_ALL=C sort) - - # If $dirlist is only one line, then the directory is empty - if [ "$(echo "${dirlist}" | wc -l)" -gt 1 ]; then - print_mtime "$1" - - echo "${dirlist}" | \ - while read x; do - list_parse $x - parse $x - done - fi -} - -input_file() { - source="$1" - if [ -f "$1" ]; then - # If a regular file is specified, assume it is in - # gen_init_cpio format - header "$1" - print_mtime "$1" >> $cpio_list - cat "$1" >> $cpio_list - if [ -n "$dep_list" ]; then - echo "$1 \\" >> $dep_list - cat "$1" | while read type dir file perm ; do - if [ "$type" = "file" ]; then - echo "$file \\" >> $dep_list - fi - done - fi - elif [ -d "$1" ]; then - # If a directory is specified then add all files in it to fs - dir_filelist "$1" - else - echo " ${prog}: Cannot open '$1'" >&2 - exit 1 - fi -} - -prog=$0 -root_uid=0 -root_gid=0 -dep_list= -timestamp= -cpio_list=$(mktemp ${TMPDIR:-/tmp}/cpiolist.XXXXXX) -# gen_init_cpio writes to stdout by default -output="" - -trap "rm -f $cpio_list" EXIT - -while [ $# -gt 0 ]; do - arg="$1" - shift - case "$arg" in - "-l") # files included in initramfs - used by kbuild - dep_list="$1" - echo "deps_initramfs := \\" > $dep_list - shift - ;; - "-o") # generate cpio image named $1 - output="-o $1" - shift - ;; - "-u") # map $1 to uid=0 (root) - root_uid="$1" - [ "$root_uid" = "-1" ] && root_uid=$(id -u || echo 0) - shift - ;; - "-g") # map $1 to gid=0 (root) - root_gid="$1" - [ "$root_gid" = "-1" ] && root_gid=$(id -g || echo 0) - shift - ;; - "-d") # date for file mtimes - timestamp="$(date -d"$1" +%s || :)" - if test -n "$timestamp"; then - timestamp="-t $timestamp" - fi - shift - ;; - "-h") - usage - exit 0 - ;; - *) - case "$arg" in - "-"*) - unknown_option - ;; - *) # input file/dir - process it - input_file "$arg" - ;; - esac - ;; - esac -done - -# If output_file is set we will generate cpio archive -# we are careful to delete tmp files -"${GEN_INIT_CPIO:-usr/gen_init_cpio}" $output $timestamp $cpio_list |