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bootiso
executable file
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bootiso
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#!/bin/bash
# shellcheck disable=SC2181
# shellcheck disable=SC2236
#
# Author: jules randolph <jules.sam.randolph@gmail.com> https://github.com/jsamr
# License: MIT
# Version 4.0.0-alpha.0
set -o pipefail
set -E
version="4.0.0-alpha.0"
scriptName=$(basename "$0")
bashVersion=$(echo "$BASH_VERSION" | cut -d. -f1)
if [ -z "$BASH_VERSION" ] || [ "$bashVersion" -lt 4 ]; then
echo >&2 "You need bash v4+ to run this script. Aborting..."
exit 1
fi
# program constrains definitions
typeset -ar commandDependencies=('lsblk' 'column' 'sfdisk' 'mkfs' 'blkid' 'wipefs' 'blockdev' 'grep' 'file' 'awk' 'mlabel' 'syslinux' 'rsync'
'partprobe' 'curl' 'tar' 'bc' 'wimlib-imagex' 'md5sum' 'sha1sum' 'sha256sum' 'sha512sum' 'cut')
typeset -Ar commandPackages=(
['lsblk']='util-linux'
['sfdisk']='util-linux'
['mkfs']='util-linux'
['blkid']='util-linux'
['wipefs']='util-linux'
['blockdev']='util-linux'
['column']='util-linux'
['grep']='grep'
['file']='file'
['awk']='gawk'
['mlabel']='mtools'
['syslinux']='syslinux'
['rsync']='rsync'
['partprobe']='parted'
['curl']='curl'
['tar']='tar'
['bc']='bc'
['wimlib-imagex']='wimlib'
['md5sum']='coreutils'
['sha1sum']='coreutils'
['sha256sum']='coreutils'
['sha512sum']='coreutils'
['cut']='coreutils'
)
typeset shortOptions='bydJahlMftLp'
typeset -ar supportedFS=('vfat' 'exfat' 'ntfs' 'ext2' 'ext3' 'ext4' 'f2fs')
typeset -Ar userVarsCompatibilityMatrix=(
['iso-file']='install-auto install-mount-rsync install-dd inspect probe'
['device']='install-auto install-mount-rsync install-dd format'
['type']='install-mount-rsync format'
['label']='install-mount-rsync format'
['remote-bootloader']='install-auto install-mount-rsync'
)
typeset -Ar userFlagsCompatibilityMatrix=(
['local-bootloader']='install-auto install-mount-rsync'
['assume-yes']='install-auto install-mount-rsync install-dd format'
['no-eject']='install-auto install-mount-rsync install-dd format'
['autoselect']='install-auto install-mount-rsync install-dd format'
['no-mime-check']='install-auto install-mount-rsync install-dd'
['no-hash-check']='install-auto install-mount-rsync install-dd probe inspect'
['force-hash-check']='install-auto install-mount-rsync install-dd probe inspect'
['no-usb-check']='install-auto install-mount-rsync install-dd list-usb-drives probe format'
['no-size-check']='install-auto install-mount-rsync install-dd'
)
# internal variables
typeset syslinuxLibRoot=${SYSLINUX_LIB_ROOT:-'/usr/lib/syslinux'}
typeset ticketsurl="https://github.com/jsamr/bootiso/issues"
typeset mountRoot=/mnt
typeset tempRoot=/var/tmp/bootiso
typeset cacheRoot=/var/cache/bootiso
typeset selectedPartition
typeset isoMountPoint
typeset usbMountPoint
typeset startTime
typeset endTime
typeset addSyslinuxBootloader=false
typeset syslinuxVersion
typeset -a devicesList
typeset operationSuccess
typeset expectingISOFile
typeset foundSyslinuxMbrBinary
typeset foundSyslinuxBiosFolder
typeset -A syslinuxInstall
typeset -a temporaryAssets=()
typeset -A isoInspection=(
['isHybrid']=''
['syslinuxBin']=''
['syslinuxVer']=''
['syslinuxConf']=''
['supportsEFIBoot']=''
)
typeset -A userFlags=(
# Actions
['help']=''
['version']=''
['list-usb-drives']=''
['format']=''
['install-dd']=''
['install-mr']=''
['inspect']=''
['probe']=''
# Options
['local-bootloader']=''
['assume-yes']=''
['device']=''
['no-eject']=''
['autoselect']=''
['no-mime-check']=''
['no-usb-check']=''
['no-size-check']=''
['no-hash-check']=''
['force-hash-check']=''
['no-wimsplit']=''
)
typeset -A userVars=(
['iso-file']=''
['hash-file']=''
['device']=''
['type']=''
['label']=''
['remote-bootloader']=''
)
# user defined variables
typeset selectedIsoFile # no default
typeset hashFile
typeset selectedDevice # default to prompted to user
typeset partitionLabel # default to inferred from ISO file label
typeset partitionType # default to vfat
typeset action='install-auto'
typeset selectedBootloaderVersion # default to auto
# options
typeset disableMimeCheck
typeset disableUSBCheck
typeset disableSizeCheck
typeset disableConfirmation
typeset disableHashCheck
typeset forceHashCheck
typeset disableWimsplit
typeset autoselect
typeset shouldMakePartition
typeset noDeviceEjection
typeset localBootloader
typeset redColor="\\033[0;31m"
typeset greenColor="\\033[0;32m"
typeset yellowColor="\\033[0;33m"
typeset startUnderline=$(tput smul)
typeset endUnderline=$(tput rmul)
typeset startBold=$(tput bold)
typeset endBold="\e[22m"
boldify() {
echo -e "$startBold$1$endBold"
}
underline() {
echo -e "$startUnderline$1$endUnderline"
}
# $1: The text to colorify.
redify() {
echo -e "$redColor$1\\033[0m"
}
# $1: The text to colorify.
greenify() {
echo -e "$greenColor$1\\033[0m"
}
# $1: The text to colorify.
yellowify() {
echo -e "$yellowColor$1\\033[0m"
}
typeset openTicketMessage="This is not expected: please open a ticket at $ticketsurl."
typeset actionFlagsTable="
-f, --format|Format selected USB drive and exit.
-h, --help|Display this help message and exit.
-i, --inspect|Inspect ISOFILE boot capabilities.
-l, --list-usb-drives|List available USB drives and exit.
-p, --probe|Equivalent to -i followed by -l actions.
-v, --version|Display version and exit.
"
typeset modifierFlagsTable="
-a, --autoselect|In combination with -y, autoselect USB drive when only one is connected.
-d, --device DEVICE|Pick DEVICE block file as target USB drive.
-y, --assume-yes|Don't prompt for confirmation before erasing drive.
-J, --no-eject|Don't eject drive after unmounting.
-H, --no-hash-check|Don't search for hash files and check ISOFILE integrity.
-M, --no-mime-check|Don't check ISOFILE mime-type.
-t, --type FSTYPE|Format to FSTYPE.
-L, --label PARTLABEL|Set partition label to PARTLABEL.
"
typeset installModeModifiersTable="
--icopy, --dd|Install ISOFILE in \"Image-Copy\" mode.
--mrsync|Install ISOFILE in \"Mount-Rsync\" mode.
"
typeset helpIntro="\
$scriptName v$version - create a bootable USB drive from an ISO image."
typeset helpSynopsis="
Usage: $(boldify "$scriptName") [$(underline MODIFIER...)] $(underline ISOFILE)
$(boldify "$scriptName") $(underline ACTION) [$(underline MODIFIER...)] $(underline ISOFILE)
$(boldify "$scriptName") $(underline ACTION)"
typeset helpHint="
Invoked with no ACTION flag, $scriptName will default to install action in automatic mode: inspect ISOFILE \
boot capabilities and find the best way to make a bootable USB drive. \
Read $scriptName man page for a detailed description and advanced options."
displayHelp() {
typeset termwidth=$(tput cols)
echo -e "$helpIntro" | fmt -g "$termwidth" -w "$termwidth"
echo -e "$helpSynopsis"
echo -e "$helpHint" | fmt -g "$termwidth" -w "$termwidth"
echo -e "\n$(boldify 'ACTIONS')"
echo -e "$actionFlagsTable" | column -c "$termwidth" --table -d -N flag,desc -W desc -s \|
echo -e "\n$(boldify 'GENERIC MODIFIERS')"
echo -e "$modifierFlagsTable" | column -c "$termwidth" --table -d -N flag,desc -W desc -s \|
echo -e "\n$(boldify 'INSTALL MODE MODIFIERS')"
echo -e "$installModeModifiersTable" | column -c "$termwidth" --table -d -N flag,desc -W desc -s \|
}
indent() {
sed -e ':a;N;$!ba;s/\n/\n /g'
}
indentAll() {
sed -e 's/^/ /'
}
# $1: The message to print.
echoerr() {
local IFS=$'\n'
redify "$scriptName: $*" | indent >&2
}
# $1: The message to print.
echowarn() {
local IFS=$'\n'
yellowify "$scriptName: $*" | indent
}
# $1: The message to print.
echogood() {
local IFS=$'\n'
greenify "$scriptName: $*" | indent
}
# $1: The message to print.
echoinfo() {
local IFS=$'\n'
echo -e "$scriptName: $*" | indent
}
# $1: The message to print.
failAndExit() {
echoerr "$@" "Exiting..."
exit 1
}
compute() {
answer=$(echo "$@" | bc)
if ((answer == 0)); then
return 1
else
return 0
fi
}
# $1: The name of the command to check against $PATH.
hasPackage() {
command -v "$1" &>/dev/null
return $?
}
configureFolders() {
typeset defaultMode=777
if [ ! -e "$tempRoot" ]; then
mkdir -m $defaultMode "$tempRoot"
elif [ -d "$tempRoot" ]; then
chmod -R $defaultMode "$tempRoot"
else
failAndExit "Unexpected state: '$tempRoot' is not a folder." \
"Remove this file and try again."
fi
if [ ! -e "$cacheRoot" ]; then
mkdir -m $defaultMode "$cacheRoot"
elif [ -d "$cacheRoot" ]; then
chmod -R $defaultMode "$cacheRoot"
else
failAndExit "Unexpected state: '$cacheRoot' is not a folder." \
"Remove this file and try again."
fi
if [ ! -e "$mountRoot" ]; then
mkdir "$mountRoot"
elif [ ! -d "$mountRoot" ]; then
failAndExit "Unexpected state: '$mountRoot' is not a folder." \
"Remove this file and try again."
fi
}
isMounted() {
if [ ! -z "$1" ] && grep -q -e "$1" /etc/mtab; then
return 0
else
return 1
fi
}
umountUSB() {
if isMounted "$usbMountPoint"; then
if umount "$usbMountPoint" |& indentAll; then
echogood "USB device partition succesfully unmounted."
else
echowarn "Could not unmount USB mount point."
fi
fi
}
umountISO() {
if isMounted "$isoMountPoint"; then
if umount "$isoMountPoint" |& indentAll; then
echogood "ISO succesfully unmounted ($isoMountPoint)."
else
echowarn "Could not unmount ISO mount point."
fi
fi
}
initPckgManager() {
if hasPackage apt-get; then # Debian
pkgmgr="apt-get install"
return 0
fi
if hasPackage dnf; then # Fedora
pkgmgr="dnf install"
return 0
fi
if hasPackage yum; then # Fedora
pkgmgr="yum install"
return 0
fi
if hasPackage pacman; then # Arch
pkgmgr="pacman -S"
return 0
fi
if hasPackage zypper; then # OpenSuse
pkgmgr="zypper install"
return 0
fi
if hasPackage emerge; then # Gentoo
pkgmgr="emerge"
return 0
fi
if hasPackage xbps-install; then # Void
pkgmgr="xbps-install"
return 0
fi
return 1
}
checkSudo() {
if ((EUID != 0)); then
if [[ -t 1 ]]; then
sudo --preserve-env "$0" "$@"
else
exec 1>output_file
gksu --preserve-env "$0" "$@"
fi
exit
fi
}
failISOCheck() {
echoerr "Provided file '$selectedIsoFile' doesn't seem to be an ISO file (wrong mime-type: '$mimetype')."
echowarn "You can bypass this policy with $(boldify '-M, --no-mime-check')$yellowColor, but it is likely that the operation will fail."
failAndExit "Exiting..."
}
assertISOIsOK() {
typeset mimetype
typeset -i isOctetStream
if [ -z "$selectedIsoFile" ]; then
echoerr "Missing argument 'iso-file'."
exit 2
fi
if [ -d "$selectedIsoFile" ]; then
failAndExit "Provided file '$selectedIsoFile' is a directory."
fi
if [ ! -f "$selectedIsoFile" ]; then
failAndExit "Provided iso file '$selectedIsoFile' does not exist."
fi
if [ "$disableMimeCheck" == 'false' ]; then
mimetype=$(file --mime-type -b -- "$selectedIsoFile")
[ "$mimetype" == "application/octet-stream" ]
isOctetStream=$?
if ((isOctetStream != 0)) && [ ! "$mimetype" == "application/x-iso9660-image" ]; then
failISOCheck
fi
fi
}
checkISOHash() {
typeset lHash
computeHashWithProgress() {
local hashName="$1"
local isoName="$2"
typeset hashStoreFile=$(createTempFile "bootiso-file-hash")
echoinfo "Checking hash for '$isoName'..."
printf "%s%s" \
"You can disable this check with $(boldify "-H, --no-hash-check") flags" \
" " | indentAll
temporaryAssets+=("$hashStoreFile")
(
local hash
local -i status=0
hash=$($hashName "$isoName" | awk "{print \$1; exit }")
status=$?
if ((status == 0)); then
printf "%s" "$hash" >"$hashStoreFile"
else
printf "%s" 1 >"$hashStoreFile"
fi
) &
pid=$!
while [ -e "/proc/$pid" ]; do
updateProgress
done
cleanProgress
lHash=$(cat "$hashStoreFile")
if [ "$lHash" == "1" ]; then
return 1
fi
}
checkHash() {
typeset hashPath=$1 # Path to file containing hashes
typeset isoName=$2 # File to be checked
typeset hashName=$3 # Name of command of hash
local status
# Hash from hash file
typeset gHash=$(awk -v pattern="$isoName$" '$0 ~ pattern { print $1; exit }' "$hashPath")
if [ -z "$gHash" ]; then
echoerr "No matching filename found in hash file '$hashPath'"
return
elif [ -z "$hashName" ]; then
case ${#gHash} in
32)
hashName="md5sum"
;;
40)
hashName="sha1sum"
;;
64)
hashName="sha256sum"
;;
128)
hashName="sha512sum"
;;
*)
failAndExit "Matching line in '$hashPath' has an unexpected hash format."
;;
esac
fi
# Hash from iso
computeHashWithProgress $hashName "$isoName"
status=$?
if ((status != 0)); then
failAndExit "$hashName command failed with status $status"
fi
if [ "$gHash" != "$lHash" ]; then
if [ "$forceHashCheck" == 'true' ]; then
failAndExit "Hash mismatch in '$hashPath' (${hashName%sum})."
else
echowarn "Hash mismatch in '$hashPath' (${hashName%sum})."
typeset answer
read -r -n1 -p "Do you still want to continue? (y/n)> " answer
echo
case $answer in
y | Y)
return
;;
*)
failAndExit
;;
esac
echoinfo "Ignoring mismatching hash."
fi
else
echogood "Matching ${hashName%sum} hash found in '$hashPath'"
numValidHashes=$((numValidHashes + 1))
fi
}
typeset numValidHashes=0
typeset isoDirectory=$(dirname "$selectedIsoFile")
typeset isoFileName=$(basename "$selectedIsoFile")
typeset -ar hashes=("md5sum" "sha1sum" "sha256sum" "sha512sum")
if [ -n "$hashFile" ]; then
if [ -f "$hashFile" ]; then
checkHash "$hashFile" "$isoFileName"
else
failAndExit "Specified hash file '$hashFile' does not exist."
fi
else
shopt -s nullglob nocaseglob
for hash in "${hashes[@]}"; do
for file in "$isoDirectory/$hash"*; do
checkHash "$file" "$isoFileName" "$hash"
done
if [ -f "$selectedIsoFile.${hash%sum}" ]; then
checkHash "$selectedIsoFile.${hash%sum}" "$isoFileName" "$hash"
fi
done
shopt -u nullglob nocaseglob
fi
if [ "$forceHashCheck" == 'true' ] && [ $numValidHashes == 0 ]; then
failAndExit "No matching hashes found. Assert forced by $(boldify '--force-hash-check')"
fi
}
firstMatchInFolder() {
find "$1" -type f -iname "$2" -print -quit
}
matchFirstExpression() {
typeset root=$1
typeset expr
typeset match
shift
for expr in "$@"; do
match=$(firstMatchInFolder "$root" "$expr")
if [ ! -z "$match" ]; then
echo "$match"
break
fi
done
}
findFileFromPatterns() {
typeset root=$1
shift
typeset loc
typeset found
for loc in "$@"; do
if [ -f "${root}/$loc" ]; then
found="${root}/$loc"
break
fi
done
if [ -z "$found" ]; then
for loc in "$@"; do
typeset candidate=$(find "$root" -type f -path "*/$loc" -print -quit)
if [ ! -z "$candidate" ]; then
found="$candidate"
break
fi
done
fi
echo "$found"
}
configureLabel() {
partitionLabel=${partitionLabel:-$(blkid -o value -s LABEL -- "$selectedIsoFile")}
case $partitionType in
vfat)
# Label to uppercase, otherwise some DOS systems won't work properly
partitionLabel=${partitionLabel^^}
# FAT32 labels have maximum 11 chars
partitionLabel=${partitionLabel:0:11}
;;
exfat)
# EXFAT labels have maximum 15 chars
partitionLabel=${partitionLabel:0:15}
;;
ntfs)
# NTFS labels have maximum 32 chars
partitionLabel=${partitionLabel:0:32}
;;
ext2 | ext3 | ext4)
# EXT labels have maximum 16 chars
partitionLabel=${partitionLabel:0:16}
;;
*)
echowarn "Unexpected partition type '$partitionType'." \
"$openTicketMessage"
;;
esac
# Fallback to "BOOTISO"
partitionLabel=${partitionLabel:-"BOOTISO"}
if [ -z "${userVars['label']}" ]; then
echogood "Partition label automatically set to '$partitionLabel'." \
"You can explicitly set the label with $(boldify '-L, --label')$greenColor."
else
echogood "Partition label manually set to '$partitionLabel'."
fi
}
# $1: The name of the package command to check.
checkpkg() {
typeset answer
if ! hasPackage "$1"; then
echowarn "Command '$1' not found! Should be in package '${commandPackages["$1"]}'."
if [ ! -z "$pkgmgr" ]; then
read -r -n1 -p "Attempt installation? (y/n)> " answer
echo
case $answer in
y | Y)
if ! $pkgmgr "${commandPackages["$1"]}"; then
failAndExit "Installation of dependency '$1' failed." \
"Perhaps this dependency has a slightly different name on your distribution." \
"Find it and install manually."
else
if ! hasPackage "$1"; then
failAndExit "Program '$1' is not accessible in the \$PATH environment even though the package ${commandPackages["$1"]} has just been installed."
fi
fi
;;
*)
failAndExit "Missing dependency '$1'."
;;
esac
else
failAndExit "Missing dependency '$1'."
fi
fi
}
# $1: The string by which elements will be joined.
# $2-* : the elements to join
joinBy() {
local IFS=$1
shift
echo "$*"
}
# $1: The element to check.
# $2-* : the list to check against.
containsElement() {
local e match="$1"
shift
for e; do [[ "$e" == "$match" ]] && return 0; done
return 1
}
initDevicesList() {
typeset -a devices
typeset device
mapfile -t devices < <(lsblk -o NAME,TYPE | grep --color=never -oP '^\K\w+(?=\s+disk$)')
devicesList=()
for device in "${devices[@]}"; do
if [ "$(getDeviceType "/dev/$device")" == "usb" ] || [ "$disableUSBCheck" == 'true' ]; then
devicesList+=("$device")
fi
done
}
listDevicesTable() {
typeset lsblkCmd='lsblk -o NAME,MODEL,VENDOR,SIZE,TRAN,HOTPLUG,SERIAL'
initDevicesList
if [ "$disableUSBCheck" == 'true' ]; then
echoinfo "Listing drives available in your system:"
else
echoinfo "Listing USB devices available in your system:"
fi
if [ "${#devicesList[@]}" -gt 0 ]; then
$lsblkCmd | sed -n 1p | sed 's/^/ /'
$lsblkCmd | grep --color=never -P "^($(joinBy '|' "${devicesList[@]}"))" | sed 's/^/ /'
return 0
else
echowarn "Couldn't find any USB drives on your system." \
"If one is physically plugged in, it's likely that it has been ejected and should be reconnected." \
"You can check the availability of USB drives with '$scriptName -l'."
return 1
fi
}
parseArguments() {
enableUserFlag() {
userFlags["$1"]=true
}
setUserVar() {
userVars["$1"]=$2
}
typeset key
typeset isEndOfOptions=false
while [[ $# -gt 0 ]]; do
key="$1"
if [ "$isEndOfOptions" == 'false' ]; then
case $key in
# ACTIONS
-h | --help | help)
enableUserFlag 'help'
shift
;;
-v | --version)
enableUserFlag 'version'
shift
;;
-l | --list-usb-drives)
enableUserFlag 'list-usb-drives'
shift
;;
-p | --probe)
enableUserFlag 'probe'
shift
;;
-f | --format)
enableUserFlag 'format'
shift
;;
-i | --inspect)
enableUserFlag 'inspect'
shift
;;
--dd | --icopy)
enableUserFlag 'install-dd'
shift
;;
--mrsync)
enableUserFlag 'install-mount-rsync'
shift
;;
# OPTIONS
-b | --bootloader)
echowarn "$(boldify '-b, --bootloader')$yellowColor has been removed in v3.0.0. Bootloader installation is now automatic."
shift
;;
--local-bootloader)
enableUserFlag 'local-bootloader'
shift
;;
--remote-bootloader)
if (($# < 2)); then
failAndExit "Missing value for '$1' flag. Please provide a version following MAJOR.MINOR pattern. ex: '4.10'."
fi
setUserVar 'remote-bootloader' "$2"
shift 2
;;
-y | --assume-yes)
enableUserFlag 'assume-yes'
shift
;;
-d | --device)
if (($# < 2)); then
failAndExit "Missing value for '$1' flag. Please provide a device."
fi
setUserVar 'device' "$2"
shift 2
;;
-t | --type)
if (($# < 2)); then
failAndExit "Missing value for '$1' flag. Please provide a filesystem type."
fi
setUserVar 'type' "${2,,}" #lowercased
shift 2
;;
-L | --label)
if (($# < 2)); then
failAndExit "Missing value for '$1' flag. Please provide a label."
fi
setUserVar 'label' "$2"
shift 2
;;
--hash-file)
if (($# < 2)); then
failAndExit "Missing value for '$1' flag. Please provide a hash file."
fi
setUserVar 'hash-file' "$2"
shift 2
;;
-J | --no-eject)
enableUserFlag 'no-eject'
shift
;;
-H | --no-hash-check)
enableUserFlag 'no-hash-check'
shift
;;
-a | --autoselect)
enableUserFlag 'autoselect'
shift
;;
-M | --no-mime-check)
enableUserFlag 'no-mime-check'
shift
;;
--no-usb-check)
enableUserFlag 'no-usb-check'
shift
;;
--no-size-check)
enableUserFlag 'no-size-check'
shift
;;
--force-hash-check)
enableUserFlag 'force-hash-check'
shift
;;
--no-wimsplit)
enableUserFlag 'no-wimsplit'
shift
;;
--)
isEndOfOptions=true
shift
;;
-*)
# Probably an option, possibly a file.
if [ ! -f "$key" ]; then
# Assume it's stacked options
if [[ "$key" =~ ^-["$shortOptions"]{2,}$ ]]; then
shift
typeset options=${key#*-}
typeset -a extractedOptions
mapfile -t extractedOptions < <(echo "$options" | grep -o . | xargs -d '\n' -n1 printf '-%s\n')
set -- "${extractedOptions[@]}" "$@"
elif [[ "$key" =~ ^--[a-zA-Z0-9]{2,}$ ]]; then
failAndExit "Unknown option: '$key'"
else
printf "\\e[0;31m%s\\e[m" "$scriptName: Unknown option: "
printf '%s' "$key" | GREP_COLORS='mt=00;32:sl=00;31' grep --color=always -P "[$shortOptions]"
if [[ "$key" =~ ^-[a-zA-Z0-9]+$ ]]; then
typeset wrongOptions=$(printf '%s' "${key#*-}" | grep -Po "[^$shortOptions]" | tr -d '\n')
if [ ${#key} -eq 2 ]; then
yellowify "flag: \\033[0;31m'$wrongOptions'\\033[0m."
else
yellowify "stacked flags: \\033[0;31m'$wrongOptions'\\033[0m."
fi
fi
echoerr "Exiting..."
exit 2
fi
else
# Happened to be a file.
setUserVar 'iso-file' "$1"
shift
fi
;;
*)
setUserVar 'iso-file' "$1"
shift
;;
esac
else
setUserVar 'iso-file' "$1"
break
fi
done
}
checkPackages() {
typeset pkg
for pkg in "${commandDependencies[@]}"; do
checkpkg "$pkg"
done
# test grep supports -P option
if ! echo 1 | grep -P '1' &>/dev/null; then
failAndExit "You're using an old version of grep which does not support perl regular expression (-P option)."
fi
}
# $1 : the folder name prefix
# print the name of the new folder if operation succeeded, fails otherwise
createMountFolder() {
typeset tmpFileTemplate
if ((EUID == 0)); then
tmpFileTemplate="$mountRoot/$1-XXX"
else
tmpFileTemplate="$tempRoot/$1-XXX"
fi
mktemp -d "$tmpFileTemplate"
typeset status=$?
if [ ! $status -eq 0 ]; then
failAndExit "Failed to create temporary mount point with pattern '$tmpFileTemplate'."
fi
}
createTempFile() {
typeset tmpFileTemplate="$tempRoot/$1-XXX"
mktemp "$tmpFileTemplate"
typeset status=$?
if [ ! $status -eq 0 ]; then
failAndExit "Failed to create temporary file."
fi
}
mountISOFile() {
isoMountPoint=$(createMountFolder iso) || exit "$?"
temporaryAssets+=("$isoMountPoint")
echogood "Created ISO mount point at '$isoMountPoint'."
if ! mount -r -o loop -- "$selectedIsoFile" "$isoMountPoint" >/dev/null; then
failAndExit "Could not mount ISO file."
fi
}
# $1 : a device block
# Returns "usb" if device is USB, "ata" for SATA
getDeviceType() {
typeset deviceName=/sys/block/${1#/dev/}
typeset deviceType=$(udevadm info --query=property --path="$deviceName" | grep -Po 'ID_BUS=\K\w+')
echo "$deviceType"
}
deviceIsDisk() {
lsblk --nodeps -o NAME,TYPE "$1" | grep -q disk
return $?
}
selectDevice() {
typeset _selectedDevice
chooseDevice() {
echoinfo "Select the device corresponding to the USB device you want to make bootable: $(joinBy ',' "${devicesList[@]}")" \
"Type CTRL+D to quit."
read -r -p "Select device id> " _selectedDevice
echo
if containsElement "$_selectedDevice" "${devicesList[@]}"; then
selectedDevice="/dev/$_selectedDevice"
else
if containsElement "$_selectedDevice" "" "exit"; then
echoinfo "Exiting on user request."
exit 0
else
failAndExit "The drive $_selectedDevice does not exist."
fi
fi
}
handleDeviceSelection() {
if [ ${#devicesList[@]} -eq 1 ] && [ "$disableUSBCheck" == 'false' ]; then
# autoselect
if [ "$disableConfirmation" == 'false' ] || { [ "$disableConfirmation" == 'true' ] && [ "$autoselect" == 'true' ]; }; then
typeset selected="${devicesList[0]}"
echogood "Autoselecting '$selected' (only USB device candidate)"
selectedDevice="/dev/$selected"
else
chooseDevice
fi
else
chooseDevice
fi
}
if [ -z "$selectedDevice" ]; then
# List all hard disk drives
if listDevicesTable; then
handleDeviceSelection
else
echoerr "Exiting..."
exit 1
fi
fi
selectedPartition="${selectedDevice}1"
}
assertDeviceIsOK() {
failDevice() {
echoerr "$1"
listDevicesTable
echoerr "Exiting..."
exit 1
}
typeset -r device=$1
if [ ! -e "$device" ]; then
failDevice "The selected device '$device' does not exist."
fi
if [ ! -b "$device" ]; then
failDevice "The selected device '$device' is not a valid block file."
fi
if [ ! -d "/sys/block/$(basename "$device")" ] || ! deviceIsDisk "$device"; then
failAndExit "The selected device '$device' is either unmounted or not a disk (might be a partition or loop)." \
"Select a disk instead or reconnect the USB device." \
"You can check the availability of USB drives with '$scriptName -l'."
fi
}
assertDeviceIsUSB() {
typeset deviceType
if [ "$disableUSBCheck" == 'true' ]; then
echowarn "USB check has been disabled. Skipping."
return 0
fi
deviceType=$(getDeviceType "$selectedDevice")
if [ "$deviceType" != "usb" ]; then
echoerr "The device you selected is not connected via USB (found BUS: '$deviceType') and the operation was therefore canceled."
echowarn "Use $(boldify '--no-usb-check')$yellowColor to bypass this policy at your own risk."
echoerr "Exiting..."