mirror of
https://mirrors.bfsu.edu.cn/git/linux.git
synced 2024-12-06 02:24:14 +08:00
77a88274dc
LANG gives a weak default to each LC_* in case it is not explicitly defined. LC_ALL, if set, overrides all other LC_* variables. LANG < LC_CTYPE, LC_COLLATE, LC_MONETARY, LC_NUMERIC, ... < LC_ALL This is why documentation such as [1] suggests to set LC_ALL in build scripts to get the deterministic result. LANG=C is not strong enough to override LC_* that may be set by end users. [1]: https://reproducible-builds.org/docs/locales/ Signed-off-by: Masahiro Yamada <masahiroy@kernel.org> Acked-by: Michael Ellerman <mpe@ellerman.id.au> (powerpc) Reviewed-by: Matthias Maennich <maennich@google.com> Acked-by: Matthieu Baerts <matthieu.baerts@tessares.net> (mptcp) Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
248 lines
5.7 KiB
Bash
Executable File
248 lines
5.7 KiB
Bash
Executable File
#!/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.
|
|
<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=$0
|
|
root_uid=0
|
|
root_gid=0
|
|
dep_list=
|
|
cpio_list=$(mktemp ${TMPDIR:-/tmp}/cpiolist.XXXXXX)
|
|
output="/dev/stdout"
|
|
|
|
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="$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=$(id -g || echo 0)
|
|
shift
|
|
;;
|
|
"-h")
|
|
usage
|
|
exit 0
|
|
;;
|
|
*)
|
|
case "$arg" in
|
|
"-"*)
|
|
unknown_option
|
|
;;
|
|
*) # input file/dir - process it
|
|
input_file "$arg"
|
|
;;
|
|
esac
|
|
;;
|
|
esac
|
|
done
|
|
|
|
# If output_file is set we will generate cpio archive
|
|
# we are careful to delete tmp files
|
|
timestamp=
|
|
if test -n "$KBUILD_BUILD_TIMESTAMP"; then
|
|
timestamp="$(date -d"$KBUILD_BUILD_TIMESTAMP" +%s || :)"
|
|
if test -n "$timestamp"; then
|
|
timestamp="-t $timestamp"
|
|
fi
|
|
fi
|
|
usr/gen_init_cpio $timestamp $cpio_list > $output
|