mirror of
https://github.com/dracutdevs/dracut.git
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1084 lines
31 KiB
Bash
Executable File
1084 lines
31 KiB
Bash
Executable File
#!/bin/bash
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#
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# functions used by dracut and other tools.
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#
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# Copyright 2005-2009 Red Hat, Inc. All rights reserved.
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#
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 2 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program. If not, see <http://www.gnu.org/licenses/>.
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#
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export LC_MESSAGES=C
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# is_func <command>
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# Check whether $1 is a function.
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is_func() {
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[[ "$(type -t "$1")" == "function" ]]
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}
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# Generic substring function. If $2 is in $1, return 0.
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strstr() { [[ $1 == *"$2"* ]]; }
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# Generic glob matching function. If glob pattern $2 matches anywhere in $1, OK
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strglobin() { [[ $1 == *$2* ]]; }
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# Generic glob matching function. If glob pattern $2 matches all of $1, OK
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# shellcheck disable=SC2053
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strglob() { [[ $1 == $2 ]]; }
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# returns OK if $1 contains literal string $2 at the beginning, and isn't empty
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str_starts() { [ "${1#"$2"*}" != "$1" ]; }
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# returns OK if $1 contains literal string $2 at the end, and isn't empty
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str_ends() { [ "${1%*"$2"}" != "$1" ]; }
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trim() {
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local var="$*"
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var="${var#"${var%%[![:space:]]*}"}" # remove leading whitespace characters
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var="${var%"${var##*[![:space:]]}"}" # remove trailing whitespace characters
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printf "%s" "$var"
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}
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# find a binary. If we were not passed the full path directly,
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# search in the usual places to find the binary.
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find_binary() {
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local _delim
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local _path
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local l
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local p
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[[ -z ${1##/*} ]] || _delim="/"
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if [[ $1 == *.so* ]]; then
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for l in $libdirs; do
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_path="${l}${_delim}${1}"
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if { $DRACUT_LDD "${dracutsysrootdir}${_path}" &> /dev/null; }; then
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printf "%s\n" "${_path}"
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return 0
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fi
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done
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_path="${_delim}${1}"
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if { $DRACUT_LDD "${dracutsysrootdir}${_path}" &> /dev/null; }; then
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printf "%s\n" "${_path}"
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return 0
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fi
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fi
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if [[ $1 == */* ]]; then
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_path="${_delim}${1}"
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if [[ -L ${dracutsysrootdir}${_path} ]] || [[ -x ${dracutsysrootdir}${_path} ]]; then
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printf "%s\n" "${_path}"
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return 0
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fi
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fi
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for p in $DRACUT_PATH; do
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_path="${p}${_delim}${1}"
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if [[ -L ${dracutsysrootdir}${_path} ]] || [[ -x ${dracutsysrootdir}${_path} ]]; then
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printf "%s\n" "${_path}"
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return 0
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fi
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done
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[[ -n $dracutsysrootdir ]] && return 1
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type -P "${1##*/}"
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}
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ldconfig_paths() {
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$DRACUT_LDCONFIG ${dracutsysrootdir:+-r ${dracutsysrootdir} -f /etc/ld.so.conf} -pN 2> /dev/null | grep -E -v '/(lib|lib64|usr/lib|usr/lib64)/[^/]*$' | sed -n 's,.* => \(.*\)/.*,\1,p' | sort | uniq
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}
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# Version comparison function. Assumes Linux style version scheme.
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# $1 = version a
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# $2 = comparison op (gt, ge, eq, le, lt, ne)
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# $3 = version b
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vercmp() {
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local _n1
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read -r -a _n1 <<< "${1//./ }"
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local _op=$2
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local _n2
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read -r -a _n2 <<< "${3//./ }"
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local _i _res
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for ((_i = 0; ; _i++)); do
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if [[ ! ${_n1[_i]}${_n2[_i]} ]]; then
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_res=0
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elif ((${_n1[_i]:-0} > ${_n2[_i]:-0})); then
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_res=1
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elif ((${_n1[_i]:-0} < ${_n2[_i]:-0})); then
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_res=2
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else
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continue
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fi
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break
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done
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case $_op in
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gt) ((_res == 1)) ;;
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ge) ((_res != 2)) ;;
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eq) ((_res == 0)) ;;
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le) ((_res != 1)) ;;
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lt) ((_res == 2)) ;;
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ne) ((_res != 0)) ;;
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esac
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}
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# Create all subdirectories for given path without creating the last element.
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# $1 = path
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mksubdirs() {
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# shellcheck disable=SC2174
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[[ -e ${1%/*} ]] || mkdir -m 0755 -p -- "${1%/*}"
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}
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# Function prints global variables in format name=value line by line.
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# $@ = list of global variables' name
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print_vars() {
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local _var _value
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for _var in "$@"; do
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eval printf -v _value "%s" \""\$$_var"\"
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[[ ${_value} ]] && printf '%s="%s"\n' "$_var" "$_value"
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done
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}
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# normalize_path <path>
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# Prints the normalized path, where it removes any duplicated
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# and trailing slashes.
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# Example:
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# $ normalize_path ///test/test//
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# /test/test
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normalize_path() {
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# shellcheck disable=SC2064
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trap "$(shopt -p extglob)" RETURN
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shopt -q -s extglob
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local p=${1//+(\/)//}
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printf "%s\n" "${p%/}"
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}
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# convert_abs_rel <from> <to>
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# Prints the relative path, when creating a symlink to <to> from <from>.
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# Example:
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# $ convert_abs_rel /usr/bin/test /bin/test-2
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# ../../bin/test-2
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# $ ln -s $(convert_abs_rel /usr/bin/test /bin/test-2) /usr/bin/test
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convert_abs_rel() {
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local __current __absolute __abssize __cursize __newpath
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local -i __i __level
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set -- "$(normalize_path "$1")" "$(normalize_path "$2")"
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# corner case #1 - self looping link
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[[ $1 == "$2" ]] && {
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printf "%s\n" "${1##*/}"
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return
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}
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# corner case #2 - own dir link
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[[ ${1%/*} == "$2" ]] && {
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printf ".\n"
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return
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}
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IFS=/ read -r -a __current <<< "$1"
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IFS=/ read -r -a __absolute <<< "$2"
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__abssize=${#__absolute[@]}
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__cursize=${#__current[@]}
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while [[ ${__absolute[__level]} == "${__current[__level]}" ]]; do
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((__level++))
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if ((__level > __abssize || __level > __cursize)); then
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break
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fi
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done
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for ((__i = __level; __i < __cursize - 1; __i++)); do
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if ((__i > __level)); then
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__newpath=$__newpath"/"
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fi
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__newpath=$__newpath".."
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done
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for ((__i = __level; __i < __abssize; __i++)); do
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if [[ -n $__newpath ]]; then
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__newpath=$__newpath"/"
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fi
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__newpath=$__newpath${__absolute[__i]}
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done
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printf -- "%s\n" "$__newpath"
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}
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# get_fs_env <device>
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# Get and the ID_FS_TYPE variable from udev for a device.
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# Example:
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# $ get_fs_env /dev/sda2
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# ext4
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get_fs_env() {
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[[ $1 ]] || return
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unset ID_FS_TYPE
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ID_FS_TYPE=$(blkid -u filesystem -o export -- "$1" \
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if [[ $line == "TYPE="* ]]; then
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printf "%s" "${line#TYPE=}"
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exit 0
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fi
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done)
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if [[ $ID_FS_TYPE ]]; then
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printf "%s" "$ID_FS_TYPE"
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return 0
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fi
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return 1
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}
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# get_maj_min <device>
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# Prints the major and minor of a device node.
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# Example:
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# $ get_maj_min /dev/sda2
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# 8:2
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get_maj_min() {
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local _majmin
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local _out
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if [[ $get_maj_min_cache_file ]]; then
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_out="$(grep -m1 -oE "^$1 \S+$" "$get_maj_min_cache_file" | awk '{print $NF}')"
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fi
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if ! [[ "$_out" ]]; then
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_majmin="$(stat -L -c '%t:%T' "$1" 2> /dev/null)"
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_out="$(printf "%s" "$((0x${_majmin%:*})):$((0x${_majmin#*:}))")"
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if [[ $get_maj_min_cache_file ]]; then
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echo "$1 $_out" >> "$get_maj_min_cache_file"
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fi
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fi
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echo -n "$_out"
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}
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# get_devpath_block <device>
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# get the DEVPATH in /sys of a block device
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get_devpath_block() {
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local _majmin _i
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_majmin=$(get_maj_min "$1")
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for _i in /sys/block/*/dev /sys/block/*/*/dev; do
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[[ -e $_i ]] || continue
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if [[ $_majmin == "$(< "$_i")" ]]; then
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printf "%s" "${_i%/dev}"
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return 0
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fi
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done
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return 1
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}
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# get a persistent path from a device
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get_persistent_dev() {
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local i _tmp _dev _pol
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_dev=$(get_maj_min "$1")
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[ -z "$_dev" ] && return
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if [[ -n $persistent_policy ]]; then
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_pol="/dev/disk/${persistent_policy}/*"
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else
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_pol=
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fi
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for i in \
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$_pol \
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/dev/mapper/* \
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/dev/disk/by-uuid/* \
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/dev/disk/by-label/* \
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/dev/disk/by-partuuid/* \
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/dev/disk/by-partlabel/* \
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/dev/disk/by-id/* \
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/dev/disk/by-path/*; do
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[[ -e $i ]] || continue
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[[ $i == /dev/mapper/control ]] && continue
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[[ $i == /dev/mapper/mpath* ]] && continue
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_tmp=$(get_maj_min "$i")
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if [ "$_tmp" = "$_dev" ]; then
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printf -- "%s" "$i"
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return
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fi
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done
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printf -- "%s" "$1"
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}
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expand_persistent_dev() {
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local _dev=$1
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case "$_dev" in
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LABEL=*)
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_dev="/dev/disk/by-label/${_dev#LABEL=}"
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;;
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UUID=*)
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_dev="${_dev#UUID=}"
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_dev="${_dev,,}"
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_dev="/dev/disk/by-uuid/${_dev}"
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;;
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PARTUUID=*)
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_dev="${_dev#PARTUUID=}"
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_dev="${_dev,,}"
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_dev="/dev/disk/by-partuuid/${_dev}"
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;;
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PARTLABEL=*)
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_dev="/dev/disk/by-partlabel/${_dev#PARTLABEL=}"
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;;
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esac
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printf "%s" "$_dev"
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}
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shorten_persistent_dev() {
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local _dev="$1"
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case "$_dev" in
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/dev/disk/by-uuid/*)
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printf "%s" "UUID=${_dev##*/}"
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;;
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/dev/disk/by-label/*)
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printf "%s" "LABEL=${_dev##*/}"
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;;
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/dev/disk/by-partuuid/*)
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printf "%s" "PARTUUID=${_dev##*/}"
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;;
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/dev/disk/by-partlabel/*)
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printf "%s" "PARTLABEL=${_dev##*/}"
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;;
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*)
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printf "%s" "$_dev"
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;;
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esac
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}
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# find_block_device <mountpoint>
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# Prints the major and minor number of the block device
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# for a given mountpoint.
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# Unless $use_fstab is set to "yes" the functions
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# uses /proc/self/mountinfo as the primary source of the
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# information and only falls back to /etc/fstab, if the mountpoint
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# is not found there.
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# Example:
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# $ find_block_device /usr
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# 8:4
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find_block_device() {
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local _dev _majmin _find_mpt
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_find_mpt="$1"
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if [[ $use_fstab != yes ]]; then
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[[ -d $_find_mpt/. ]]
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findmnt -e -v -n -o 'MAJ:MIN,SOURCE' --target "$_find_mpt" | {
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while read -r _majmin _dev || [ -n "$_dev" ]; do
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if [[ -b $_dev ]]; then
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if ! [[ $_majmin ]] || [[ $_majmin == 0:* ]]; then
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_majmin=$(get_maj_min "$_dev")
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fi
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if [[ $_majmin ]]; then
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printf "%s\n" "$_majmin"
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else
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printf "%s\n" "$_dev"
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fi
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return 0
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fi
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if [[ $_dev == *:* ]]; then
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printf "%s\n" "$_dev"
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return 0
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fi
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done
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return 1
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} && return 0
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fi
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# fall back to /etc/fstab
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[[ ! -f "$dracutsysrootdir"/etc/fstab ]] && return 1
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findmnt -e --fstab -v -n -o 'MAJ:MIN,SOURCE' --target "$_find_mpt" | {
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while read -r _majmin _dev || [ -n "$_dev" ]; do
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if ! [[ $_dev ]]; then
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_dev="$_majmin"
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unset _majmin
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fi
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if [[ -b $_dev ]]; then
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[[ $_majmin ]] || _majmin=$(get_maj_min "$_dev")
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if [[ $_majmin ]]; then
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printf "%s\n" "$_majmin"
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else
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printf "%s\n" "$_dev"
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fi
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return 0
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fi
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if [[ $_dev == *:* ]]; then
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printf "%s\n" "$_dev"
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return 0
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fi
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done
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return 1
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} && return 0
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return 1
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}
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# find_mp_fstype <mountpoint>
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# Echo the filesystem type for a given mountpoint.
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# /proc/self/mountinfo is taken as the primary source of information
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# and /etc/fstab is used as a fallback.
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# No newline is appended!
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# Example:
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# $ find_mp_fstype /;echo
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# ext4
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find_mp_fstype() {
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local _fs
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if [[ $use_fstab != yes ]]; then
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findmnt -e -v -n -o 'FSTYPE' --target "$1" | {
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while read -r _fs || [ -n "$_fs" ]; do
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[[ $_fs ]] || continue
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[[ $_fs == "autofs" ]] && continue
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printf "%s" "$_fs"
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return 0
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done
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return 1
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} && return 0
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fi
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[[ ! -f "$dracutsysrootdir"/etc/fstab ]] && return 1
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findmnt --fstab -e -v -n -o 'FSTYPE' --target "$1" | {
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while read -r _fs || [ -n "$_fs" ]; do
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[[ $_fs ]] || continue
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[[ $_fs == "autofs" ]] && continue
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printf "%s" "$_fs"
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return 0
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done
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return 1
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} && return 0
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return 1
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}
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# find_dev_fstype <device>
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# Echo the filesystem type for a given device.
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# /proc/self/mountinfo is taken as the primary source of information
|
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# and /etc/fstab is used as a fallback.
|
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# No newline is appended!
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# Example:
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# $ find_dev_fstype /dev/sda2;echo
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# ext4
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find_dev_fstype() {
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local _find_dev _fs
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_find_dev="$1"
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if ! [[ $_find_dev == /dev* ]]; then
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[[ -b "/dev/block/$_find_dev" ]] && _find_dev="/dev/block/$_find_dev"
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fi
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|
|
if [[ $use_fstab != yes ]]; then
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findmnt -e -v -n -o 'FSTYPE' --source "$_find_dev" | {
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while read -r _fs || [ -n "$_fs" ]; do
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[[ $_fs ]] || continue
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[[ $_fs == "autofs" ]] && continue
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printf "%s" "$_fs"
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return 0
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done
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return 1
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} && return 0
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fi
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|
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[[ ! -f "$dracutsysrootdir"/etc/fstab ]] && return 1
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|
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findmnt --fstab -e -v -n -o 'FSTYPE' --source "$_find_dev" | {
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while read -r _fs || [ -n "$_fs" ]; do
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[[ $_fs ]] || continue
|
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[[ $_fs == "autofs" ]] && continue
|
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printf "%s" "$_fs"
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return 0
|
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done
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return 1
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} && return 0
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return 1
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}
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|
|
# find_mp_fsopts <mountpoint>
|
|
# Echo the filesystem options for a given mountpoint.
|
|
# /proc/self/mountinfo is taken as the primary source of information
|
|
# and /etc/fstab is used as a fallback.
|
|
# No newline is appended!
|
|
# Example:
|
|
# $ find_mp_fsopts /;echo
|
|
# rw,relatime,discard,data=ordered
|
|
find_mp_fsopts() {
|
|
if [[ $use_fstab != yes ]]; then
|
|
findmnt -e -v -n -o 'OPTIONS' --target "$1" 2> /dev/null && return 0
|
|
fi
|
|
|
|
[[ ! -f "$dracutsysrootdir"/etc/fstab ]] && return 1
|
|
|
|
findmnt --fstab -e -v -n -o 'OPTIONS' --target "$1"
|
|
}
|
|
|
|
# find_dev_fsopts <device>
|
|
# Echo the filesystem options for a given device.
|
|
# /proc/self/mountinfo is taken as the primary source of information
|
|
# and /etc/fstab is used as a fallback.
|
|
# if `use_fstab == yes`, then only `/etc/fstab` is used.
|
|
#
|
|
# Example:
|
|
# $ find_dev_fsopts /dev/sda2
|
|
# rw,relatime,discard,data=ordered
|
|
find_dev_fsopts() {
|
|
local _find_dev
|
|
_find_dev="$1"
|
|
if ! [[ $_find_dev == /dev* ]]; then
|
|
[[ -b "/dev/block/$_find_dev" ]] && _find_dev="/dev/block/$_find_dev"
|
|
fi
|
|
|
|
if [[ $use_fstab != yes ]]; then
|
|
findmnt -e -v -n -o 'OPTIONS' --source "$_find_dev" 2> /dev/null && return 0
|
|
fi
|
|
|
|
[[ ! -f "$dracutsysrootdir"/etc/fstab ]] && return 1
|
|
|
|
findmnt --fstab -e -v -n -o 'OPTIONS' --source "$_find_dev"
|
|
}
|
|
|
|
# finds the major:minor of the block device backing the root filesystem.
|
|
find_root_block_device() { find_block_device /; }
|
|
|
|
# for_each_host_dev_fs <func>
|
|
# Execute "<func> <dev> <filesystem>" for every "<dev> <fs>" pair found
|
|
# in ${host_fs_types[@]}
|
|
for_each_host_dev_fs() {
|
|
local _func="$1"
|
|
local _dev
|
|
local _ret=1
|
|
|
|
[[ "${#host_fs_types[@]}" ]] || return 2
|
|
|
|
for _dev in "${!host_fs_types[@]}"; do
|
|
$_func "$_dev" "${host_fs_types[$_dev]}" && _ret=0
|
|
done
|
|
return $_ret
|
|
}
|
|
|
|
host_fs_all() {
|
|
printf "%s\n" "${host_fs_types[@]}"
|
|
}
|
|
|
|
# Walk all the slave relationships for a given block device.
|
|
# Stop when our helper function returns success
|
|
# $1 = function to call on every found block device
|
|
# $2 = block device in major:minor format
|
|
check_block_and_slaves() {
|
|
local _x
|
|
[[ -b /dev/block/$2 ]] || return 1 # Not a block device? So sorry.
|
|
if ! lvm_internal_dev "$2"; then "$1" "$2" && return; fi
|
|
check_vol_slaves "$@" && return 0
|
|
if [[ -f /sys/dev/block/$2/../dev ]] && [[ /sys/dev/block/$2/../subsystem -ef /sys/class/block ]]; then
|
|
check_block_and_slaves "$1" "$(< "/sys/dev/block/$2/../dev")" && return 0
|
|
fi
|
|
for _x in /sys/dev/block/"$2"/slaves/*; do
|
|
[[ -f $_x/dev ]] || continue
|
|
[[ $_x/subsystem -ef /sys/class/block ]] || continue
|
|
check_block_and_slaves "$1" "$(< "$_x/dev")" && return 0
|
|
done
|
|
return 1
|
|
}
|
|
|
|
check_block_and_slaves_all() {
|
|
local _x _ret=1
|
|
[[ -b /dev/block/$2 ]] || return 1 # Not a block device? So sorry.
|
|
if ! lvm_internal_dev "$2" && "$1" "$2"; then
|
|
_ret=0
|
|
fi
|
|
check_vol_slaves_all "$@" && return 0
|
|
if [[ -f /sys/dev/block/$2/../dev ]] && [[ /sys/dev/block/$2/../subsystem -ef /sys/class/block ]]; then
|
|
check_block_and_slaves_all "$1" "$(< "/sys/dev/block/$2/../dev")" && _ret=0
|
|
fi
|
|
for _x in /sys/dev/block/"$2"/slaves/*; do
|
|
[[ -f $_x/dev ]] || continue
|
|
[[ $_x/subsystem -ef /sys/class/block ]] || continue
|
|
check_block_and_slaves_all "$1" "$(< "$_x/dev")" && _ret=0
|
|
done
|
|
return $_ret
|
|
}
|
|
# for_each_host_dev_and_slaves <func>
|
|
# Execute "<func> <dev>" for every "<dev>" found
|
|
# in ${host_devs[@]} and their slaves
|
|
for_each_host_dev_and_slaves_all() {
|
|
local _func="$1"
|
|
local _dev
|
|
local _ret=1
|
|
|
|
[[ "${host_devs[*]}" ]] || return 2
|
|
|
|
for _dev in "${host_devs[@]}"; do
|
|
[[ -b $_dev ]] || continue
|
|
if check_block_and_slaves_all "$_func" "$(get_maj_min "$_dev")"; then
|
|
_ret=0
|
|
fi
|
|
done
|
|
return $_ret
|
|
}
|
|
|
|
for_each_host_dev_and_slaves() {
|
|
local _func="$1"
|
|
local _dev
|
|
|
|
[[ "${host_devs[*]}" ]] || return 2
|
|
|
|
for _dev in "${host_devs[@]}"; do
|
|
[[ -b $_dev ]] || continue
|
|
check_block_and_slaves "$_func" "$(get_maj_min "$_dev")" && return 0
|
|
done
|
|
return 1
|
|
}
|
|
|
|
# /sys/dev/block/major:minor is symbol link to real hardware device
|
|
# go downstream $(realpath /sys/dev/block/major:minor) to detect driver
|
|
get_blockdev_drv_through_sys() {
|
|
local _block_mods=""
|
|
local _path
|
|
|
|
_path=$(realpath "$1")
|
|
while true; do
|
|
if [[ -L "$_path"/driver/module ]]; then
|
|
_mod=$(realpath "$_path"/driver/module)
|
|
_mod=$(basename "$_mod")
|
|
_block_mods="$_block_mods $_mod"
|
|
fi
|
|
_path=$(dirname "$_path")
|
|
if [[ $_path == '/sys/devices' ]] || [[ $_path == '/' ]]; then
|
|
break
|
|
fi
|
|
done
|
|
echo "$_block_mods"
|
|
}
|
|
|
|
# ugly workaround for the lvm design
|
|
# There is no volume group device,
|
|
# so, there are no slave devices for volume groups.
|
|
# Logical volumes only have the slave devices they really live on,
|
|
# but you cannot create the logical volume without the volume group.
|
|
# And the volume group might be bigger than the devices the LV needs.
|
|
check_vol_slaves() {
|
|
local _vg _pv _dm _majmin
|
|
_majmin="$2"
|
|
_dm=/sys/dev/block/$_majmin/dm
|
|
[[ -f $_dm/uuid && $(< "$_dm"/uuid) =~ LVM-* ]] || return 1
|
|
_vg=$(dmsetup splitname --noheadings -o vg_name "$(< "$_dm/name")")
|
|
# strip space
|
|
_vg="${_vg//[[:space:]]/}"
|
|
if [[ $_vg ]]; then
|
|
for _pv in $(lvm vgs --noheadings -o pv_name "$_vg" 2> /dev/null); do
|
|
check_block_and_slaves "$1" "$(get_maj_min "$_pv")" && return 0
|
|
done
|
|
fi
|
|
return 1
|
|
}
|
|
|
|
check_vol_slaves_all() {
|
|
local _vg _pv _majmin
|
|
_majmin="$2"
|
|
_dm="/sys/dev/block/$_majmin/dm"
|
|
[[ -f $_dm/uuid && $(< "$_dm"/uuid) =~ LVM-* ]] || return 1
|
|
_vg=$(dmsetup splitname --noheadings -o vg_name "$(< "$_dm/name")")
|
|
# strip space
|
|
_vg="${_vg//[[:space:]]/}"
|
|
if [[ $_vg ]]; then
|
|
# when filter/global_filter is set, lvm may be failed
|
|
if ! lvm lvs --noheadings -o vg_name "$_vg" 2> /dev/null 1> /dev/null; then
|
|
return 1
|
|
fi
|
|
|
|
for _pv in $(lvm vgs --noheadings -o pv_name "$_vg" 2> /dev/null); do
|
|
check_block_and_slaves_all "$1" "$(get_maj_min "$_pv")"
|
|
done
|
|
return 0
|
|
fi
|
|
return 1
|
|
}
|
|
|
|
# fs_get_option <filesystem options> <search for option>
|
|
# search for a specific option in a bunch of filesystem options
|
|
# and return the value
|
|
fs_get_option() {
|
|
local _fsopts=$1
|
|
local _option=$2
|
|
local OLDIFS="$IFS"
|
|
IFS=,
|
|
# shellcheck disable=SC2086
|
|
set -- $_fsopts
|
|
IFS="$OLDIFS"
|
|
while [ $# -gt 0 ]; do
|
|
case $1 in
|
|
$_option=*)
|
|
echo "${1#"${_option}"=}"
|
|
break
|
|
;;
|
|
esac
|
|
shift
|
|
done
|
|
}
|
|
|
|
check_kernel_config() {
|
|
local _config_opt="$1"
|
|
local _config_file
|
|
[[ -f $dracutsysrootdir/boot/config-$kernel ]] \
|
|
&& _config_file="/boot/config-$kernel"
|
|
[[ -f $dracutsysrootdir/lib/modules/$kernel/config ]] \
|
|
&& _config_file="/lib/modules/$kernel/config"
|
|
|
|
# no kernel config file, so return true
|
|
[[ $_config_file ]] || return 0
|
|
|
|
grep -q -F "${_config_opt}=" "$dracutsysrootdir$_config_file" && return 0
|
|
return 1
|
|
}
|
|
|
|
# 0 if the kernel module is either built-in or available
|
|
# 1 if the kernel module is not enabled
|
|
check_kernel_module() {
|
|
modprobe -d "$dracutsysrootdir" -S "$kernel" --dry-run "$1" &> /dev/null || return 1
|
|
}
|
|
|
|
# get_cpu_vendor
|
|
# Only two values are returned: AMD or Intel
|
|
get_cpu_vendor() {
|
|
if grep -qE AMD /proc/cpuinfo; then
|
|
printf "AMD"
|
|
fi
|
|
if grep -qE Intel /proc/cpuinfo; then
|
|
printf "Intel"
|
|
fi
|
|
}
|
|
|
|
# get_host_ucode
|
|
# Get the hosts' ucode file based on the /proc/cpuinfo
|
|
get_ucode_file() {
|
|
local family
|
|
local model
|
|
local stepping
|
|
family=$(grep -E "cpu family" /proc/cpuinfo | head -1 | sed "s/.*:\ //")
|
|
model=$(grep -E "model" /proc/cpuinfo | grep -v name | head -1 | sed "s/.*:\ //")
|
|
stepping=$(grep -E "stepping" /proc/cpuinfo | head -1 | sed "s/.*:\ //")
|
|
|
|
if [[ "$(get_cpu_vendor)" == "AMD" ]]; then
|
|
if [[ $family -ge 21 ]]; then
|
|
printf "microcode_amd_fam%xh.bin" "$family"
|
|
else
|
|
printf "microcode_amd.bin"
|
|
fi
|
|
fi
|
|
if [[ "$(get_cpu_vendor)" == "Intel" ]]; then
|
|
# The /proc/cpuinfo are in decimal.
|
|
printf "%02x-%02x-%02x" "${family}" "${model}" "${stepping}"
|
|
fi
|
|
}
|
|
|
|
# Not every device in /dev/mapper should be examined.
|
|
# If it is an LVM device, touch only devices which have /dev/VG/LV symlink.
|
|
lvm_internal_dev() {
|
|
local dev_dm_dir=/sys/dev/block/$1/dm
|
|
[[ ! -f $dev_dm_dir/uuid || $(< "$dev_dm_dir"/uuid) != LVM-* ]] && return 1 # Not an LVM device
|
|
local DM_VG_NAME DM_LV_NAME DM_LV_LAYER
|
|
eval "$(dmsetup splitname --nameprefixes --noheadings --rows "$(< "$dev_dm_dir"/name)" 2> /dev/null)"
|
|
[[ ${DM_VG_NAME} ]] && [[ ${DM_LV_NAME} ]] || return 0 # Better skip this!
|
|
[[ ${DM_LV_LAYER} ]] || [[ ! -L /dev/${DM_VG_NAME}/${DM_LV_NAME} ]]
|
|
}
|
|
|
|
btrfs_devs() {
|
|
local _mp="$1"
|
|
btrfs device usage "$_mp" \
|
|
| while read -r _dev _; do
|
|
str_starts "$_dev" "/" || continue
|
|
_dev=${_dev%,}
|
|
printf -- "%s\n" "$_dev"
|
|
done
|
|
}
|
|
|
|
zfs_devs() {
|
|
local _mp="$1"
|
|
zpool list -H -v -P "${_mp%%/*}" | awk -F$'\t' '$2 ~ /^\// {print $2}' \
|
|
| while read -r _dev; do
|
|
realpath "${_dev}"
|
|
done
|
|
}
|
|
|
|
iface_for_remote_addr() {
|
|
# shellcheck disable=SC2046
|
|
set -- $(ip -o route get to "$1")
|
|
while [ $# -gt 0 ]; do
|
|
case $1 in
|
|
dev)
|
|
echo "$2"
|
|
return
|
|
;;
|
|
esac
|
|
shift
|
|
done
|
|
}
|
|
|
|
local_addr_for_remote_addr() {
|
|
# shellcheck disable=SC2046
|
|
set -- $(ip -o route get to "$1")
|
|
while [ $# -gt 0 ]; do
|
|
case $1 in
|
|
src)
|
|
echo "$2"
|
|
return
|
|
;;
|
|
esac
|
|
shift
|
|
done
|
|
}
|
|
|
|
peer_for_addr() {
|
|
local addr=$1
|
|
local qtd
|
|
|
|
# quote periods in IPv4 address
|
|
qtd=${addr//./\\.}
|
|
ip -o addr show \
|
|
| sed -n 's%^.* '"$qtd"' peer \([0-9a-f.:]\{1,\}\(/[0-9]*\)\?\).*$%\1%p'
|
|
}
|
|
|
|
netmask_for_addr() {
|
|
local addr=$1
|
|
local qtd
|
|
|
|
# quote periods in IPv4 address
|
|
qtd=${addr//./\\.}
|
|
ip -o addr show | sed -n 's,^.* '"$qtd"'/\([0-9]*\) .*$,\1,p'
|
|
}
|
|
|
|
gateway_for_iface() {
|
|
local ifname=$1 addr=$2
|
|
|
|
case $addr in
|
|
*.*) proto=4 ;;
|
|
*:*) proto=6 ;;
|
|
*) return ;;
|
|
esac
|
|
ip -o -$proto route show \
|
|
| sed -n "s/^default via \([0-9a-z.:]\{1,\}\) dev $ifname .*\$/\1/p"
|
|
}
|
|
|
|
# This works only for ifcfg-style network configuration!
|
|
bootproto_for_iface() {
|
|
local ifname=$1
|
|
local dir
|
|
|
|
# follow ifcfg settings for boot protocol
|
|
for dir in network-scripts network; do
|
|
[ -f "/etc/sysconfig/$dir/ifcfg-$ifname" ] && {
|
|
sed -n "s/BOOTPROTO=[\"']\?\([[:alnum:]]\{1,\}\)[\"']\?.*\$/\1/p" \
|
|
"/etc/sysconfig/$dir/ifcfg-$ifname"
|
|
return
|
|
}
|
|
done
|
|
}
|
|
|
|
is_unbracketed_ipv6_address() {
|
|
strglob "$1" '*:*' && ! strglob "$1" '\[*:*\]'
|
|
}
|
|
|
|
# Create an ip= string to set up networking such that the given
|
|
# remote address can be reached
|
|
ip_params_for_remote_addr() {
|
|
local remote_addr=$1
|
|
local ifname local_addr peer netmask gateway ifmac
|
|
|
|
[[ $remote_addr ]] || return 1
|
|
ifname=$(iface_for_remote_addr "$remote_addr")
|
|
[[ $ifname ]] || {
|
|
berror "failed to determine interface to connect to $remote_addr"
|
|
return 1
|
|
}
|
|
|
|
# ifname clause to bind the interface name to a MAC address
|
|
if [ -d "/sys/class/net/$ifname/bonding" ]; then
|
|
dinfo "Found bonded interface '${ifname}'. Make sure to provide an appropriate 'bond=' cmdline."
|
|
elif [ -e "/sys/class/net/$ifname/address" ]; then
|
|
ifmac=$(cat "/sys/class/net/$ifname/address")
|
|
[[ $ifmac ]] && printf 'ifname=%s:%s ' "${ifname}" "${ifmac}"
|
|
fi
|
|
|
|
bootproto=$(bootproto_for_iface "$ifname")
|
|
case $bootproto in
|
|
dhcp | dhcp6 | auto6) ;;
|
|
dhcp4)
|
|
bootproto=dhcp
|
|
;;
|
|
static* | "")
|
|
bootproto=
|
|
;;
|
|
*)
|
|
derror "bootproto \"$bootproto\" is unsupported by dracut, trying static configuration"
|
|
bootproto=
|
|
;;
|
|
esac
|
|
if [[ $bootproto ]]; then
|
|
printf 'ip=%s:%s ' "${ifname}" "${bootproto}"
|
|
else
|
|
local_addr=$(local_addr_for_remote_addr "$remote_addr")
|
|
[[ $local_addr ]] || {
|
|
berror "failed to determine local address to connect to $remote_addr"
|
|
return 1
|
|
}
|
|
peer=$(peer_for_addr "$local_addr")
|
|
# Set peer or netmask, but not both
|
|
[[ $peer ]] || netmask=$(netmask_for_addr "$local_addr")
|
|
gateway=$(gateway_for_iface "$ifname" "$local_addr")
|
|
# Quote IPv6 addresses with brackets
|
|
is_unbracketed_ipv6_address "$local_addr" && local_addr="[$local_addr]"
|
|
is_unbracketed_ipv6_address "$peer" && peer="[$peer]"
|
|
is_unbracketed_ipv6_address "$gateway" && gateway="[$gateway]"
|
|
printf 'ip=%s:%s:%s:%s::%s:none ' \
|
|
"${local_addr}" "${peer}" "${gateway}" "${netmask}" "${ifname}"
|
|
fi
|
|
|
|
}
|
|
|
|
# block_is_nbd <maj:min>
|
|
# Check whether $1 is an nbd device
|
|
block_is_nbd() {
|
|
[[ -b /dev/block/$1 && $1 == 43:* ]]
|
|
}
|
|
|
|
# block_is_iscsi <maj:min>
|
|
# Check whether $1 is an iSCSI device
|
|
block_is_iscsi() {
|
|
local _dir
|
|
local _dev=$1
|
|
[[ -L "/sys/dev/block/$_dev" ]] || return
|
|
_dir="$(readlink -f "/sys/dev/block/$_dev")" || return
|
|
until [[ -d "$_dir/sys" || -d "$_dir/iscsi_session" ]]; do
|
|
_dir="$_dir/.."
|
|
done
|
|
[[ -d "$_dir/iscsi_session" ]]
|
|
}
|
|
|
|
# block_is_fcoe <maj:min>
|
|
# Check whether $1 is an FCoE device
|
|
# Will not work for HBAs that hide the ethernet aspect
|
|
# completely and present a pure FC device
|
|
block_is_fcoe() {
|
|
local _dir
|
|
local _dev=$1
|
|
[[ -L "/sys/dev/block/$_dev" ]] || return
|
|
_dir="$(readlink -f "/sys/dev/block/$_dev")"
|
|
until [[ -d "$_dir/sys" ]]; do
|
|
_dir="$_dir/.."
|
|
if [[ -d "$_dir/subsystem" ]]; then
|
|
subsystem=$(basename "$(readlink "$_dir"/subsystem)")
|
|
[[ $subsystem == "fcoe" ]] && return 0
|
|
fi
|
|
done
|
|
return 1
|
|
}
|
|
|
|
# block_is_netdevice <maj:min>
|
|
# Check whether $1 is a net device
|
|
block_is_netdevice() {
|
|
block_is_nbd "$1" || block_is_iscsi "$1" || block_is_fcoe "$1"
|
|
}
|
|
|
|
# convert the driver name given by udevadm to the corresponding kernel module name
|
|
get_module_name() {
|
|
local dev_driver
|
|
while read -r dev_driver; do
|
|
case "$dev_driver" in
|
|
mmcblk)
|
|
echo "mmc_block"
|
|
;;
|
|
*)
|
|
echo "$dev_driver"
|
|
;;
|
|
esac
|
|
done
|
|
}
|
|
|
|
# get the corresponding kernel modules of a /sys/class/*/* or/dev/* device
|
|
get_dev_module() {
|
|
local dev_attr_walk
|
|
local dev_drivers
|
|
local dev_paths
|
|
dev_attr_walk=$(udevadm info -a "$1")
|
|
dev_drivers=$(echo "$dev_attr_walk" \
|
|
| sed -n 's/\s*DRIVERS=="\(\S\+\)"/\1/p' \
|
|
| get_module_name)
|
|
|
|
# also return modalias info from sysfs paths parsed by udevadm
|
|
dev_paths=$(echo "$dev_attr_walk" | sed -n 's/.*\(\/devices\/.*\)'\'':/\1/p')
|
|
local dev_path
|
|
for dev_path in $dev_paths; do
|
|
local modalias_file="/sys$dev_path/modalias"
|
|
if [ -e "$modalias_file" ]; then
|
|
dev_drivers="$(printf "%s\n%s" "$dev_drivers" "$(cat "$modalias_file")")"
|
|
fi
|
|
done
|
|
|
|
# if no kernel modules found and device is in a virtual subsystem, follow symlinks
|
|
if [[ -z $dev_drivers && $(udevadm info -q path "$1") == "/devices/virtual"* ]]; then
|
|
local dev_vkernel
|
|
local dev_vsubsystem
|
|
local dev_vpath
|
|
dev_vkernel=$(echo "$dev_attr_walk" | sed -n 's/\s*KERNELS=="\(\S\+\)"/\1/p' | tail -1)
|
|
dev_vsubsystem=$(echo "$dev_attr_walk" | sed -n 's/\s*SUBSYSTEMS=="\(\S\+\)"/\1/p' | tail -1)
|
|
dev_vpath="/sys/devices/virtual/$dev_vsubsystem/$dev_vkernel"
|
|
if [[ -n $dev_vkernel && -n $dev_vsubsystem && -d $dev_vpath ]]; then
|
|
local dev_links
|
|
local dev_link
|
|
dev_links=$(find "$dev_vpath" -maxdepth 1 -type l ! -name "subsystem" -exec readlink {} \;)
|
|
for dev_link in $dev_links; do
|
|
[[ -n $dev_drivers && ${dev_drivers: -1} != $'\n' ]] && dev_drivers+=$'\n'
|
|
dev_drivers+=$(udevadm info -a "$dev_vpath/$dev_link" \
|
|
| sed -n 's/\s*DRIVERS=="\(\S\+\)"/\1/p' \
|
|
| get_module_name \
|
|
| grep -v -e pcieport)
|
|
done
|
|
fi
|
|
fi
|
|
echo "$dev_drivers"
|
|
}
|
|
|
|
# Check if file is in PE format
|
|
pe_file_format() {
|
|
if [[ $# -eq 1 ]]; then
|
|
local magic
|
|
magic=$(objdump -p "$1" \
|
|
| gawk '{if ($1 == "Magic"){print strtonum("0x"$2)}}')
|
|
magic=$(printf "0x%x" "$magic")
|
|
# 0x10b (PE32), 0x20b (PE32+)
|
|
[[ $magic == 0x20b || $magic == 0x10b ]] && return 0
|
|
fi
|
|
return 1
|
|
}
|
|
|
|
# Get specific data from the PE header
|
|
pe_get_header_data() {
|
|
local data_header
|
|
[[ $# -ne "2" ]] && return 1
|
|
[[ $(pe_file_format "$1") -eq 1 ]] && return 1
|
|
data_header=$(objdump -p "$1" \
|
|
| awk -v data="$2" '{if ($1 == data){print $2}}')
|
|
echo "$data_header"
|
|
}
|
|
|
|
# Get the SectionAlignment data from the PE header
|
|
pe_get_section_align() {
|
|
local align_hex
|
|
[[ $# -ne "1" ]] && return 1
|
|
align_hex=$(pe_get_header_data "$1" "SectionAlignment")
|
|
[[ $? -eq 1 ]] && return 1
|
|
echo "$((16#$align_hex))"
|
|
}
|
|
|
|
# Get the ImageBase data from the PE header
|
|
pe_get_image_base() {
|
|
local base_image
|
|
[[ $# -ne "1" ]] && return 1
|
|
base_image=$(pe_get_header_data "$1" "ImageBase")
|
|
[[ $? -eq 1 ]] && return 1
|
|
echo "$((16#$base_image))"
|
|
}
|