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(I'm so sorry!) Linux kernel mirror (for testing) git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153154155156157158159160161162163164165166167168169170171172173174175176177178179180181182183184185186187188189190191192193194195196197198199200201202203204205206207208209210211212213214215216217218219220221222223224225226227228229230231232233234235236237238239240241242243244245246247248249250251#!/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 scripts/ directory
# error out on errorsset -e
usage() {cat << EOFUsage:$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 interpretedsequentially and immediately. -u and -g states are preserved across<cpio_source> options so an explicit "-u 0 -g 0" is requiredto reset the root/group mapping.EOF}
# awk style field access# $1 - field number; rest is argument stringfield() { 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 detailsparse() { 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=$0root_uid=0root_gid=0dep_list=timestamp=cpio_list=$(mktemp ${TMPDIR:-/tmp}/cpiolist.XXXXXX)# gen_init_cpio writes to stdout by defaultoutput=""
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 ;; esacdone
# If output_file is set we will generate cpio archive# we are careful to delete tmp filesscripts/gen_init_cpio $output $timestamp $cpio_list