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proot-distro.sh
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#!@TERMUX_PREFIX@/bin/bash
# shellcheck disable=SC2239
##
## Proot-Distro is a script for managing proot containers on Termux.
##
## !!! THIS IS NOT A REPLACEMENT FOR PROOT UTILITY !!!
##
## Originally created by Sylirre <[email protected]> for Termux project.
##
## This program is free software: you can redistribute it and/or modify
## it under the terms of the GNU General Public License as published by
## the Free Software Foundation, either version 3 of the License, or
## (at your option) any later version.
##
## This program is distributed in the hope that it will be useful,
## but WITHOUT ANY WARRANTY; without even the implied warranty of
## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
## GNU General Public License for more details.
##
## You should have received a copy of the GNU General Public License
## along with this program. If not, see <http://www.gnu.org/licenses/>.
##
PROGRAM_VERSION="4.17.2"
#############################################################################
#
# GLOBAL ENVIRONMENT AND INSTALLATION-SPECIFIC CONFIGURATION
#
set -e -u
# Override user-defined PATH.
export PATH="@TERMUX_PREFIX@/bin"
# Reference this where need to retrieve program name.
PROGRAM_NAME=$(basename "$(realpath "$0")")
# Where distribution plug-ins are stored.
DISTRO_PLUGINS_DIR="@TERMUX_PREFIX@/etc/proot-distro"
# Base directory where script keeps runtime data.
RUNTIME_DIR="@TERMUX_PREFIX@/var/lib/proot-distro"
# Where rootfs tarballs are downloaded.
DOWNLOAD_CACHE_DIR="${RUNTIME_DIR}/dlcache"
# Where extracted rootfs are stored.
INSTALLED_ROOTFS_DIR="${RUNTIME_DIR}/installed-rootfs"
# Default name servers.
DEFAULT_PRIMARY_NAMESERVER="8.8.8.8"
DEFAULT_SECONDARY_NAMESERVER="8.8.4.4"
# PATH environment variable for distributions.
DEFAULT_PATH_ENV="/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/local/games:/usr/games:@TERMUX_PREFIX@/bin:/system/bin:/system/xbin"
# Default fake kernel version.
# Note: faking kernel version is required when using PRoot-Distro on
# old devices that are not compatible with up-to-date versions of GNU libc.
DEFAULT_FAKE_KERNEL_VERSION="6.2.1-PRoot-Distro"
# Emulator type for x86_64 systems.
# Can be either BLINK or QEMU.
: "${PROOT_DISTRO_X64_EMULATOR:=QEMU}"
# Colors.
if [ -n "$(command -v tput)" ] && [ "$(tput colors 2>/dev/null || echo 0)" -ge 8 ] && [ -z "${PROOT_DISTRO_FORCE_NO_COLORS-}" ]; then
RST="$(tput sgr0)"
RED="${RST}$(tput setaf 1)"
BRED="${RST}$(tput bold)$(tput setaf 1)"
GREEN="${RST}$(tput setaf 2)"
YELLOW="${RST}$(tput setaf 3)"
BYELLOW="${RST}$(tput bold)$(tput setaf 3)"
IYELLOW="${RST}$(tput sitm)$(tput setaf 3)"
BLUE="${RST}$(tput setaf 4)"
MAGENTA="${RST}$(tput setaf 5)"
CYAN="${RST}$(tput setaf 6)"
BCYAN="${RST}$(tput bold)$(tput setaf 6)"
ICYAN="${RST}$(tput sitm)$(tput setaf 6)"
else
RED=""
BRED=""
GREEN=""
YELLOW=""
BYELLOW=""
IYELLOW=""
BLUE=""
MAGENTA=""
CYAN=""
BCYAN=""
ICYAN=""
RST=""
fi
# Disable termux-exec or other things which may interfere with proot.
# It is expected that all dependencies have fixed hardcoded paths according
# to Termux file system layout.
unset LD_PRELOAD
# Override umask
umask 0022
#############################################################################
#
# FUNCTION TO PRINT A MESSAGE TO CONSOLE
#
# Prints a given text string to stderr. Supports escape sequences.
#
#############################################################################
msg() {
echo -e "$@" >&2
}
#############################################################################
#
# DEPENDENCY CHECK
#
# Make sure all needed utilities are available in PATH before continuing.
#
#############################################################################
for i in awk basename bzip2 cat chmod cp curl cut du file find grep gzip \
head id lscpu mkdir proot rm sed tar xargs xz; do
if [ -z "$(command -v "$i")" ]; then
msg
msg "${BRED}Utility '${i}' is not installed. Cannot continue.${RST}"
msg
exit 1
fi
done
unset i
# Notify user if bin/bash is not a GNU Bash.
if ! grep -q '^GNU bash' <(bash --version 2>/dev/null | head -n 1); then
msg
msg "${BRED}Warning: bash binary that is available in PATH appears to be not a GNU bash. You may experience issues during installation, backup and restore operations.${RST}"
msg
fi
# Notify user if tar available in PATH is not GNU tar.
if ! grep -q '^tar (GNU tar)' <(tar --version 2>/dev/null | head -n 1); then
msg
msg "${BRED}Warning: tar binary that is available in PATH appears to be not a GNU tar. You may experience issues during installation, backup and restore operations.${RST}"
msg
fi
#############################################################################
#
# ANTI ROOT FUSE
#
# This script should never be executed as root as can mess up the ownership,
# and SELinux labels in $PREFIX.
#
#############################################################################
if [ "$(id -u)" = "0" ]; then
msg
msg "${BRED}Warning: ${PROGRAM_NAME} should not be executed as root user. Do not send bug reports about messed up Termux environment, lost data and bricked devices.${RST}"
msg
fi
#############################################################################
#
# ANTI NESTED PROOT FUSE
#
# Nested PRoot usage leads to performance degradation and other issues.
#
#############################################################################
TRACER_PID=$(grep TracerPid "/proc/$$/status" | cut -d $'\t' -f 2)
if [ "$TRACER_PID" != 0 ]; then
TRACER_NAME=$(grep Name "/proc/${TRACER_PID}/status" | cut -d $'\t' -f 2)
if [ "$TRACER_NAME" = "proot" ]; then
msg
msg "${BRED}Error: ${PROGRAM_NAME} should not be executed under PRoot.${RST}"
msg
exit 1
fi
unset TRACER_NAME
fi
unset TRACER_PID
#############################################################################
#
# FUNCTION TO DETECT CPU ARCHITECTURE IN GIVEN DISTRIBUTION
#
# Check known executable(s) and return CPU architecture.
#
#############################################################################
detect_cpu_arch() {
local dist_path="${INSTALLED_ROOTFS_DIR}/${1}"
local cpu_arch
local i
for i in bash dash sh su ls sha256sum busybox; do
if [ "$(dd if="${dist_path}/bin/${i}" bs=1 skip=1 count=3 2>/dev/null)" = "ELF" ]; then
cpu_arch=$(file "$(realpath "${dist_path}/bin/${i}")" | cut -d':' -f2- | cut -d',' -f2 | cut -d' ' -f2-)
[ -n "$cpu_arch" ] && break
fi
done
case "$cpu_arch" in
"ARM aarch64") cpu_arch="aarch64";;
"ARM") cpu_arch="arm";;
"UCB RISC-V") cpu_arch="riscv64";;
"Intel 80386") cpu_arch="i686";;
"x86-64") cpu_arch="x86_64";;
*) cpu_arch="unknown";;
esac
echo "$cpu_arch"
}
#############################################################################
#
# FUNCTION TO INSTALL THE SPECIFIED DISTRIBUTION
#
# Brief algorithm how it works:
#
# 1. Process arguments supplied to 'install' command.
# 2. Ensure that requested distribution is supported and is not installed.
# 3. Source the distribution configuration plug-in.
# 4. Download the tarball of rootfs for requested distribution unless found
# in cache.
# 5. Verify SHA-256 checksum of the rootfs tarball.
# 6. Extract the rootfs under PRoot with link2symlink extension enabled.
# 7. Perform post-installation actions on distribution to make it ready.
#
#############################################################################
command_install() {
local distro_name
local override_alias
local distro_plugin_script
while (($# >= 1)); do
case "$1" in
--)
shift 1
break
;;
-h|--help)
command_install_help
return 0
;;
--override-alias)
if [ $# -ge 2 ]; then
shift 1
if [ -z "$1" ]; then
msg
msg "${BRED}Error: argument to option '${YELLOW}--override-alias${BRED}' should not be empty.${RST}"
command_install_help
return 1
fi
if ! grep -qP '^[a-z0-9][a-z0-9_.+\-]*$' <<< "$1"; then
msg
msg "${BRED}Error: argument to option '${YELLOW}--override-alias${BRED}' should start only with an alphanumeric character and consist of alphanumeric characters including symbols '_.+-'."
msg
return 1
fi
if grep -qP '^.*\.sh$' <<< "$1"; then
msg
msg "${BRED}Error: argument to option '${YELLOW}--override-alias${BRED}' should not end with '.sh'.${RST}"
msg
return 1
fi
override_alias="$1"
else
msg
msg "${BRED}Error: option '${YELLOW}--override-alias${BRED}' requires an argument.${RST}"
command_install_help
return 1
fi
;;
-*)
msg
msg "${BRED}Error: got unknown option '${YELLOW}${1}${BRED}'.${RST}"
command_install_help
return 1
;;
*)
if [ -z "${distro_name-}" ]; then
if [ -z "$1" ]; then
msg
msg "${BRED}Error: distribution alias argument should not be empty.${RST}"
command_install_help
return 1
fi
distro_name="$1"
else
msg
msg "${BRED}Error: got excessive positional argument '${YELLOW}${1}${BRED}'. Note that distribution can be specified only once.${RST}"
command_install_help
return 1
fi
;;
esac
shift 1
done
if [ -z "${distro_name-}" ]; then
msg
msg "${BRED}Error: distribution alias is not specified.${RST}"
command_install_help
return 1
fi
if [ -z "${SUPPORTED_DISTRIBUTIONS["$distro_name"]+x}" ]; then
msg
msg "${BRED}Error: unknown distribution '${YELLOW}${distro_name}${BRED}' was requested to be installed.${RST}"
msg
msg "${CYAN}View supported distributions by: ${GREEN}${PROGRAM_NAME} list${RST}"
msg
return 1
fi
if [ -n "${override_alias-}" ]; then
if [ ! -e "${DISTRO_PLUGINS_DIR}/${override_alias}.sh" ] && [ ! -e "${DISTRO_PLUGINS_DIR}/${override_alias}.override.sh" ]; then
msg "${BLUE}[${GREEN}*${BLUE}] ${CYAN}Creating file '${DISTRO_PLUGINS_DIR}/${override_alias}.override.sh'...${RST}"
distro_plugin_script="${DISTRO_PLUGINS_DIR}/${override_alias}.override.sh"
cp "${DISTRO_PLUGINS_DIR}/${distro_name}.sh" "${distro_plugin_script}"
sed -i "s/^\(DISTRO_NAME=\)\(.*\)\$/\1\"${SUPPORTED_DISTRIBUTIONS["$distro_name"]} - ${override_alias}\"/g" "${distro_plugin_script}"
SUPPORTED_DISTRIBUTIONS["${override_alias}"]="${SUPPORTED_DISTRIBUTIONS["$distro_name"]}"
distro_name="${override_alias}"
else
msg
msg "${BRED}Error: distribution with alias '${YELLOW}${override_alias}${BRED}' already exists.${RST}"
msg
return 1
fi
else
distro_plugin_script="${DISTRO_PLUGINS_DIR}/${distro_name}.sh"
# Try an alternate distribution name.
if [ ! -f "${distro_plugin_script}" ]; then
distro_plugin_script="${DISTRO_PLUGINS_DIR}/${distro_name}.override.sh"
fi
fi
if [ -d "${INSTALLED_ROOTFS_DIR}/${distro_name}" ]; then
msg
msg "${BRED}Error: distribution '${YELLOW}${distro_name}${BRED}' is already installed.${RST}"
msg
msg "${CYAN}Log in: ${GREEN}${PROGRAM_NAME} login ${distro_name}${RST}"
msg "${CYAN}Reinstall: ${GREEN}${PROGRAM_NAME} reset ${distro_name}${RST}"
msg "${CYAN}Uninstall: ${GREEN}${PROGRAM_NAME} remove ${distro_name}${RST}"
msg
return 1
fi
if [ -f "${distro_plugin_script}" ]; then
msg "${BLUE}[${GREEN}*${BLUE}] ${CYAN}Installing ${YELLOW}${SUPPORTED_DISTRIBUTIONS["$distro_name"]}${CYAN}...${RST}"
# Make sure things are cleared up on failure or user requested exit.
# shellcheck disable=SC2064 # variables must expand here
trap "echo -e \"\\r\\e[2K${BLUE}[${RED}!${BLUE}] ${CYAN}Exiting due to failure.${RST}\"; chmod -R u+rwx \"${INSTALLED_ROOTFS_DIR:?}/${distro_name:?}\"; rm -rf \"${INSTALLED_ROOTFS_DIR:?}/${distro_name:?}\"; [ -e \"${DISTRO_PLUGINS_DIR}/${distro_name}.override.sh\" ] && rm -f \"${DISTRO_PLUGINS_DIR}/${distro_name}.override.sh\"; exit 1;" EXIT
# shellcheck disable=SC2064 # variables must expand here
trap "trap - EXIT; echo -e \"\\r\\e[2K${BLUE}[${RED}!${BLUE}] ${CYAN}Exiting immediately as requested.${RST}\"; chmod -R u+rwx \"${INSTALLED_ROOTFS_DIR:?}/${distro_name:?}\"; rm -rf \"${INSTALLED_ROOTFS_DIR:?}/${distro_name:?}\"; [ -e \"${DISTRO_PLUGINS_DIR}/${distro_name}.override.sh\" ] && rm -f \"${DISTRO_PLUGINS_DIR}/${distro_name}.override.sh\"; exit 1;" HUP INT TERM
msg "${BLUE}[${GREEN}*${BLUE}] ${CYAN}Creating directory '${INSTALLED_ROOTFS_DIR}/${distro_name}'...${RST}"
mkdir -p "${INSTALLED_ROOTFS_DIR}/${distro_name}"
export PROOT_L2S_DIR="${INSTALLED_ROOTFS_DIR}/${distro_name}/.l2s"
if [ ! -d "${INSTALLED_ROOTFS_DIR}/${distro_name}/.l2s" ]; then
echo -e "${BLUE}[${GREEN}*${BLUE}] ${CYAN}Creating directory '${PROOT_L2S_DIR}'...${RST}"
mkdir -p "$PROOT_L2S_DIR"
fi
# This should be overridden in distro plug-in with valid URL for
# each architecture where possible.
TARBALL_URL["aarch64"]=""
TARBALL_URL["arm"]=""
TARBALL_URL["i686"]=""
TARBALL_URL["riscv64"]=""
TARBALL_URL["x86_64"]=""
# This should be overridden in distro plug-in with valid SHA-256
# for corresponding tarballs.
TARBALL_SHA256["aarch64"]=""
TARBALL_SHA256["arm"]=""
TARBALL_SHA256["i686"]=""
TARBALL_SHA256["riscv64"]=""
TARBALL_SHA256["x86_64"]=""
# If your content inside tarball isn't stored in subdirectory,
# you can override this variable in distro plug-in with 0.
TARBALL_STRIP_OPT=1
# Distribution plug-in contains steps on how to get download URL
# and further post-installation configuration.
# shellcheck disable=SC1090
source "${distro_plugin_script}"
# Cannot proceed without URL and SHA-256.
if [ -z "${TARBALL_URL["$DISTRO_ARCH"]}" ]; then
msg "${BLUE}[${RED}!${BLUE}] ${CYAN}The distribution download URL is not defined for CPU architecture '${DISTRO_ARCH}'.${RST}"
return 1
fi
if ! grep -qP '^[0-9a-fA-F]{64}$' <<< "${TARBALL_SHA256["$DISTRO_ARCH"]}"; then
msg
msg "${BRED}Error: got malformed SHA-256 from plug-in script '${distro_plugin_script}'.${RST}"
msg
return 1
fi
if [ ! -d "$DOWNLOAD_CACHE_DIR" ]; then
msg "${BLUE}[${GREEN}*${BLUE}] ${CYAN}Creating directory '$DOWNLOAD_CACHE_DIR'...${RST}"
mkdir -p "$DOWNLOAD_CACHE_DIR"
fi
local tarball_name
tarball_name=$(basename "${TARBALL_URL["$DISTRO_ARCH"]}")
if [ ! -f "${DOWNLOAD_CACHE_DIR}/${tarball_name}" ]; then
msg "${BLUE}[${GREEN}*${BLUE}] ${CYAN}Downloading rootfs tarball...${RST}"
msg "${BLUE}[${GREEN}*${BLUE}] ${CYAN}URL: ${TARBALL_URL["$DISTRO_ARCH"]}${RST}"
# Using temporary file as script can't distinguish the partially
# downloaded file from the complete. Useful in case if curl will
# fail for some reason.
msg
rm -f "${DOWNLOAD_CACHE_DIR}/${tarball_name}.tmp"
if ! curl --disable --fail --retry 5 --retry-connrefused --retry-delay 5 --location \
--output "${DOWNLOAD_CACHE_DIR}/${tarball_name}.tmp" "${TARBALL_URL["$DISTRO_ARCH"]}"; then
msg
msg "${BLUE}[${RED}!${BLUE}] ${CYAN}Download failure, please check your network connection.${RST}"
rm -f "${DOWNLOAD_CACHE_DIR}/${tarball_name}.tmp"
return 1
fi
msg
# If curl finished successfully, rename file to original.
mv -f "${DOWNLOAD_CACHE_DIR}/${tarball_name}.tmp" "${DOWNLOAD_CACHE_DIR}/${tarball_name}"
else
msg "${BLUE}[${GREEN}*${BLUE}] ${CYAN}Using cached rootfs tarball...${RST}"
fi
if [ -n "${TARBALL_SHA256["$DISTRO_ARCH"]}" ]; then
msg "${BLUE}[${GREEN}*${BLUE}] ${CYAN}Checking integrity, please wait...${RST}"
local actual_sha256
actual_sha256=$(sha256sum "${DOWNLOAD_CACHE_DIR}/${tarball_name}" | awk '{ print $1}')
if [ "${TARBALL_SHA256["$DISTRO_ARCH"]}" != "${actual_sha256}" ]; then
msg "${BLUE}[${RED}!${BLUE}] ${CYAN}Integrity checking failed. Try to redo installation again.${RST}"
rm -f "${DOWNLOAD_CACHE_DIR}/${tarball_name}"
return 1
fi
else
msg "${BLUE}[${RED}!${BLUE}] ${CYAN}Integrity checking of downloaded rootfs has been disabled.${RST}"
fi
msg "${BLUE}[${GREEN}*${BLUE}] ${CYAN}Extracting rootfs, please wait...${RST}"
# --exclude='dev' - need to exclude /dev directory which may contain device files.
# --delay-directory-restore - set directory permissions only when files were extracted
# to avoid issues with Arch Linux bootstrap archives.
set +e
proot --link2symlink \
tar -C "${INSTALLED_ROOTFS_DIR}/${distro_name}" --warning=no-unknown-keyword \
--delay-directory-restore --preserve-permissions --strip="${TARBALL_STRIP_OPT}" \
-xf "${DOWNLOAD_CACHE_DIR}/${tarball_name}" --exclude='dev' |& grep -v "/linkerconfig/" >&2
set -e
# If no /etc in rootfs, terminate installation.
# This usually indicates that downloaded distribution tarball doesn't contain
# actual rootfs, wrong tar strip option was specified or the distribution has
# high grade of customization and doesn't respect FHS standard.
if [ ! -e "${INSTALLED_ROOTFS_DIR}/${distro_name}/etc" ]; then
msg
msg "${BRED}Error: the rootfs of distribution '${YELLOW}${distro_name}${BRED}' has unexpected structure (no /etc directory). Make sure that variable TARBALL_STRIP_OPT specified in distribution plug-in is correct.${RST}"
msg
return 1
fi
# Write important environment variables to /etc/environment.
chmod u+rw "${INSTALLED_ROOTFS_DIR}/${distro_name}/etc/environment" >/dev/null 2>&1 || true
msg "${BLUE}[${GREEN}*${BLUE}] ${CYAN}Writing file '${INSTALLED_ROOTFS_DIR}/${distro_name}/etc/environment'...${RST}"
for var in ANDROID_ART_ROOT ANDROID_DATA ANDROID_I18N_ROOT ANDROID_ROOT \
ANDROID_RUNTIME_ROOT ANDROID_TZDATA_ROOT BOOTCLASSPATH COLORTERM \
DEX2OATBOOTCLASSPATH EXTERNAL_STORAGE; do
set +u
if [ -n "${!var}" ]; then
echo "${var}=${!var}" >> "${INSTALLED_ROOTFS_DIR}/${distro_name}/etc/environment"
fi
set -u
done
unset var
# Don't touch these variables.
# TERM is being inherited from currect environment. Otherwise it is being
# set to xterm-256color (Termux app default).
cat <<- EOF >> "${INSTALLED_ROOTFS_DIR}/${distro_name}/etc/environment"
LANG=en_US.UTF-8
MOZ_FAKE_NO_SANDBOX=1
PATH=${DEFAULT_PATH_ENV}
PULSE_SERVER=127.0.0.1
TERM=${TERM-xterm-256color}
TMPDIR=/tmp
EOF
# Fix PATH in some configuration files.
for f in /etc/bash.bashrc /etc/profile /etc/login.defs; do
[ ! -e "${INSTALLED_ROOTFS_DIR}/${distro_name}${f}" ] && continue
msg "${BLUE}[${GREEN}*${BLUE}] ${CYAN}Updating PATH in '${INSTALLED_ROOTFS_DIR}/${distro_name}${f}' if needed...${RST}"
sed -i -E "s@\<(PATH=)(\"?[^\"[:space:]]+(\"|\$|\>))@\1\"${DEFAULT_PATH_ENV}\"@g" \
"${INSTALLED_ROOTFS_DIR}/${distro_name}${f}"
done
unset f
# Default /etc/resolv.conf may be empty or unsuitable for use.
msg "${BLUE}[${GREEN}*${BLUE}] ${CYAN}Creating file '${INSTALLED_ROOTFS_DIR}/${distro_name}/etc/resolv.conf'...${RST}"
rm -f "${INSTALLED_ROOTFS_DIR}/${distro_name}/etc/resolv.conf"
cat <<- EOF > "${INSTALLED_ROOTFS_DIR}/${distro_name}/etc/resolv.conf"
nameserver ${DEFAULT_PRIMARY_NAMESERVER}
nameserver ${DEFAULT_SECONDARY_NAMESERVER}
EOF
# Default /etc/hosts may be empty or incomplete.
msg "${BLUE}[${GREEN}*${BLUE}] ${CYAN}Creating file '${INSTALLED_ROOTFS_DIR}/${distro_name}/etc/hosts'...${RST}"
chmod u+rw "${INSTALLED_ROOTFS_DIR}/${distro_name}/etc/hosts" >/dev/null 2>&1 || true
cat <<- EOF > "${INSTALLED_ROOTFS_DIR}/${distro_name}/etc/hosts"
# IPv4.
127.0.0.1 localhost.localdomain localhost
# IPv6.
::1 localhost.localdomain localhost ip6-localhost ip6-loopback
fe00::0 ip6-localnet
ff00::0 ip6-mcastprefix
ff02::1 ip6-allnodes
ff02::2 ip6-allrouters
ff02::3 ip6-allhosts
EOF
# Add Android-specific UIDs/GIDs to /etc/group and /etc/gshadow.
msg "${BLUE}[${GREEN}*${BLUE}] ${CYAN}Registering Android-specific UIDs and GIDs...${RST}"
chmod u+rw "${INSTALLED_ROOTFS_DIR}/${distro_name}/etc/passwd" \
"${INSTALLED_ROOTFS_DIR}/${distro_name}/etc/shadow" \
"${INSTALLED_ROOTFS_DIR}/${distro_name}/etc/group" \
"${INSTALLED_ROOTFS_DIR}/${distro_name}/etc/gshadow" >/dev/null 2>&1 || true
echo "aid_$(id -un):x:$(id -u):$(id -g):Termux:/:/sbin/nologin" >> \
"${INSTALLED_ROOTFS_DIR}/${distro_name}/etc/passwd"
echo "aid_$(id -un):*:18446:0:99999:7:::" >> \
"${INSTALLED_ROOTFS_DIR}/${distro_name}/etc/shadow"
local group_name group_id
while read -r group_name group_id; do
echo "aid_${group_name}:x:${group_id}:root,aid_$(id -un)" \
>> "${INSTALLED_ROOTFS_DIR}/${distro_name}/etc/group"
if [ -f "${INSTALLED_ROOTFS_DIR}/${distro_name}/etc/gshadow" ]; then
echo "aid_${group_name}:*::root,aid_$(id -un)" \
>> "${INSTALLED_ROOTFS_DIR}/${distro_name}/etc/gshadow"
fi
done < <(paste <(id -Gn | tr ' ' '\n') <(id -G | tr ' ' '\n'))
# Ensure that proot will be able to bind fake /proc and /sys entries.
setup_fake_sysdata
# Run optional distro-specific hook.
if declare -f -F distro_setup >/dev/null 2>&1; then
msg "${BLUE}[${GREEN}*${BLUE}] ${CYAN}Running distribution-specific configuration steps...${RST}"
(cd "${INSTALLED_ROOTFS_DIR}/${distro_name}"
distro_setup
)
fi
# Reset trap for HUP/INT/TERM.
trap - EXIT
trap 'echo -e "\\r\\e[2K${BLUE}[${RED}!${BLUE}] ${CYAN}Exiting immediately as requested.${RST}"; exit 1;' HUP INT TERM
msg "${BLUE}[${GREEN}*${BLUE}] ${CYAN}Finished.${RST}"
msg
msg "${CYAN}Log in with: ${GREEN}${PROGRAM_NAME} login ${distro_name}${CYAN}${RST}"
msg
return 0
else
# Reset trap for HUP/INT/TERM.
trap - EXIT
trap 'echo -e "\\r\\e[2K${BLUE}[${RED}!${BLUE}] ${CYAN}Exiting immediately as requested.${RST}"; exit 1;' HUP INT TERM
msg "${BLUE}[${RED}!${BLUE}] ${CYAN}Cannot find '${distro_plugin_script}' which is used to define a distribution properties.${RST}"
return 1
fi
}
# Special function for executing a command inside rootfs.
# Intended to be used inside plug-in distro_setup() function.
# shellcheck disable=SC2317 # run_proot_cmd called indirectly
run_proot_cmd() {
if [ -z "${distro_name-}" ]; then
msg
msg "${BRED}Error: called run_proot_cmd() but \${distro_name} is not set. Make sure that run_proot_cmd() is used inside distro_setup() function.${RST}"
msg
return 1
fi
if [ -z "${DISTRO_ARCH-}" ]; then
msg
msg "${BRED}Error: called run_proot_cmd() but \${DISTRO_ARCH} is not set.${RST}"
msg
return 1
fi
local cpu_emulator_arg=""
if [ "$DISTRO_ARCH" != "$DEVICE_CPU_ARCH" ]; then
local cpu_emulator_path=""
# If CPU and host OS are 64bit, we can run 32bit guest OS without emulation.
# Everything else requires emulator (QEMU).
case "$DISTRO_ARCH" in
aarch64) cpu_emulator_path="@TERMUX_PREFIX@/bin/qemu-aarch64";;
arm)
if [ "$DEVICE_CPU_ARCH" != "aarch64" ] || ! $SUPPORT_32BIT; then
cpu_emulator_path="@TERMUX_PREFIX@/bin/qemu-arm"
fi
;;
i686)
if [ "$DEVICE_CPU_ARCH" != "x86_64" ]; then
cpu_emulator_path="@TERMUX_PREFIX@/bin/qemu-i386"
fi
;;
riscv64) cpu_emulator_path="@TERMUX_PREFIX@/bin/qemu-riscv64";;
x86_64)
if [ "$PROOT_DISTRO_X64_EMULATOR" = "QEMU" ]; then
cpu_emulator_path="@TERMUX_PREFIX@/bin/qemu-x86_64"
elif [ "$PROOT_DISTRO_X64_EMULATOR" = "BLINK" ]; then
cpu_emulator_path="@TERMUX_PREFIX@/bin/blink"
else
msg
msg "${BRED}Error: PROOT_DISTRO_X64_EMULATOR has unknown value '$PROOT_DISTRO_X64_EMULATOR'. Valid values are: BLINK, QEMU."
msg
fi
;;
*)
msg
msg "${BRED}Error: DISTRO_ARCH has unknown value '$DISTRO_ARCH'. Valid values are: aarch64, arm, i686, riscv64, x86_64."
msg
return 1
;;
esac
if [ -n "$cpu_emulator_path" ]; then
if [ -x "$cpu_emulator_path" ]; then
cpu_emulator_arg="-q ${cpu_emulator_path}"
else
local cpu_emulator_pkg=""
case "$DISTRO_ARCH" in
aarch64) cpu_emulator_pkg="qemu-user-aarch64";;
arm) cpu_emulator_pkg="qemu-user-arm";;
i686) cpu_emulator_pkg="qemu-user-i386";;
riscv64) cpu_emulator_pkg="qemu-user-riscv64";;
x86_64)
if [ "$PROOT_DISTRO_X64_EMULATOR" = "QEMU" ]; then
cpu_emulator_pkg="qemu-user-x86-64"
elif [ "$PROOT_DISTRO_X64_EMULATOR" = "BLINK" ]; then
cpu_emulator_pkg="blink"
else
msg
msg "${BRED}Error: PROOT_DISTRO_X64_EMULATOR has unknown value '$PROOT_DISTRO_X64_EMULATOR'. Valid values are: BLINK, QEMU."
msg
fi
;;
*) cpu_emulator_pkg="qemu-user-${DISTRO_ARCH}";;
esac
msg
msg "${BRED}Error: package '${cpu_emulator_pkg}' is not installed.${RST}"
msg
return 1
fi
fi
else
# Warn about CPU not supporting 32-bit instructions
if ! $SUPPORT_32BIT; then
msg "${BRED}Warning: CPU doesn't support 32-bit instructions, some software may not work.${RST}"
fi
fi
if [ -n "$cpu_emulator_arg" ]; then
if [ -d "/apex" ]; then
cpu_emulator_arg="${cpu_emulator_arg} --bind=/apex"
fi
if [ -e "/linkerconfig/ld.config.txt" ]; then
cpu_emulator_arg="${cpu_emulator_arg} --bind=/linkerconfig/ld.config.txt"
fi
cpu_emulator_arg="${cpu_emulator_arg} --bind=@TERMUX_PREFIX@"
cpu_emulator_arg="${cpu_emulator_arg} --bind=/system"
cpu_emulator_arg="${cpu_emulator_arg} --bind=/vendor"
if [ -f "/plat_property_contexts" ]; then
cpu_emulator_arg="${cpu_emulator_arg} --bind=/plat_property_contexts"
fi
if [ -f "/property_contexts" ]; then
cpu_emulator_arg="${cpu_emulator_arg} --bind=/property_contexts"
fi
fi
# Ensure that proot will be able to bind fake /proc and /sys entries.
setup_fake_sysdata
# With this tools should assume that no SELinux present.
set -- "--bind=${INSTALLED_ROOTFS_DIR}/${distro_name}/sys/.empty:/sys/fs/selinux" "$@"
# shellcheck disable=SC2086 # ${cpu_emulator_arg} should expand into nothing rather than into ''.
proot ${cpu_emulator_arg} \
-L \
--kernel-release="${DEFAULT_FAKE_KERNEL_VERSION}" \
--link2symlink \
--kill-on-exit \
--rootfs="${INSTALLED_ROOTFS_DIR}/${distro_name}" \
--root-id \
--cwd=/root \
--bind=/dev \
--bind="/dev/urandom:/dev/random" \
--bind=/proc \
--bind="/proc/self/fd:/dev/fd" \
--bind="/proc/self/fd/0:/dev/stdin" \
--bind="/proc/self/fd/1:/dev/stdout" \
--bind="/proc/self/fd/2:/dev/stderr" \
--bind=/sys \
--bind="${INSTALLED_ROOTFS_DIR}/${distro_name}/proc/.loadavg:/proc/loadavg" \
--bind="${INSTALLED_ROOTFS_DIR}/${distro_name}/proc/.stat:/proc/stat" \
--bind="${INSTALLED_ROOTFS_DIR}/${distro_name}/proc/.uptime:/proc/uptime" \
--bind="${INSTALLED_ROOTFS_DIR}/${distro_name}/proc/.version:/proc/version" \
--bind="${INSTALLED_ROOTFS_DIR}/${distro_name}/proc/.vmstat:/proc/vmstat" \
--bind="${INSTALLED_ROOTFS_DIR}/${distro_name}/proc/.sysctl_entry_cap_last_cap:/proc/sys/kernel/cap_last_cap" \
--bind="${INSTALLED_ROOTFS_DIR}/${distro_name}/sys/.empty:/sys/fs/selinux" \
/usr/bin/env -i \
"HOME=/root" \
"LANG=C.UTF-8" \
"PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin" \
"TERM=${TERM-xterm-256color}" \
"TMPDIR=/tmp" \
"$@"
}
# A function for preparing fake content for certain system data interfaces
# which known to be restricted on Android OS.
#
# All /proc entries are based on values retrieved from Arch Linux (x86_64)
# running on a VM with 8 CPUs and 8 GiB of memory. Date 2023.03.28, Linux 6.2.1.
# Some values edited to fit the PRoot-Distro.
setup_fake_sysdata() {
local d
for d in proc sys sys/.empty; do
if [ ! -e "${INSTALLED_ROOTFS_DIR}/${distro_name}/${d}" ]; then
mkdir -p "${INSTALLED_ROOTFS_DIR}/${distro_name}/${d}"
fi
chmod 700 "${INSTALLED_ROOTFS_DIR}/${distro_name}/${d}"
done
unset d
if [ ! -f "${INSTALLED_ROOTFS_DIR}/${distro_name}/proc/.loadavg" ]; then
cat <<- EOF > "${INSTALLED_ROOTFS_DIR}/${distro_name}/proc/.loadavg"
0.12 0.07 0.02 2/165 765
EOF
fi
if [ ! -f "${INSTALLED_ROOTFS_DIR}/${distro_name}/proc/.stat" ]; then
cat <<- EOF > "${INSTALLED_ROOTFS_DIR}/${distro_name}/proc/.stat"
cpu 1957 0 2877 93280 262 342 254 87 0 0
cpu0 31 0 226 12027 82 10 4 9 0 0
cpu1 45 0 664 11144 21 263 233 12 0 0
cpu2 494 0 537 11283 27 10 3 8 0 0
cpu3 359 0 234 11723 24 26 5 7 0 0
cpu4 295 0 268 11772 10 12 2 12 0 0
cpu5 270 0 251 11833 15 3 1 10 0 0
cpu6 430 0 520 11386 30 8 1 12 0 0
cpu7 30 0 172 12108 50 8 1 13 0 0
intr 127541 38 290 0 0 0 0 4 0 1 0 0 25329 258 0 5777 277 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
ctxt 140223
btime 1680020856
processes 772
procs_running 2
procs_blocked 0
softirq 75663 0 5903 6 25375 10774 0 243 11685 0 21677
EOF
fi
if [ ! -f "${INSTALLED_ROOTFS_DIR}/${distro_name}/proc/.uptime" ]; then
cat <<- EOF > "${INSTALLED_ROOTFS_DIR}/${distro_name}/proc/.uptime"
124.08 932.80
EOF
fi
if [ ! -f "${INSTALLED_ROOTFS_DIR}/${distro_name}/proc/.version" ]; then
cat <<- EOF > "${INSTALLED_ROOTFS_DIR}/${distro_name}/proc/.version"
Linux version ${DEFAULT_FAKE_KERNEL_VERSION} (proot@termux) (gcc (GCC) 12.2.1 20230201, GNU ld (GNU Binutils) 2.40) #1 SMP PREEMPT_DYNAMIC Wed, 01 Mar 2023 00:00:00 +0000
EOF
fi
if [ ! -f "${INSTALLED_ROOTFS_DIR}/${distro_name}/proc/.vmstat" ]; then
cat <<- EOF > "${INSTALLED_ROOTFS_DIR}/${distro_name}/proc/.vmstat"
nr_free_pages 1743136
nr_zone_inactive_anon 179281
nr_zone_active_anon 7183
nr_zone_inactive_file 22858
nr_zone_active_file 51328
nr_zone_unevictable 642
nr_zone_write_pending 0
nr_mlock 0
nr_bounce 0
nr_zspages 0
nr_free_cma 0
numa_hit 1259626
numa_miss 0
numa_foreign 0
numa_interleave 720
numa_local 1259626
numa_other 0
nr_inactive_anon 179281
nr_active_anon 7183
nr_inactive_file 22858
nr_active_file 51328
nr_unevictable 642
nr_slab_reclaimable 8091
nr_slab_unreclaimable 7804
nr_isolated_anon 0
nr_isolated_file 0
workingset_nodes 0
workingset_refault_anon 0
workingset_refault_file 0
workingset_activate_anon 0
workingset_activate_file 0
workingset_restore_anon 0
workingset_restore_file 0
workingset_nodereclaim 0
nr_anon_pages 7723
nr_mapped 8905
nr_file_pages 253569
nr_dirty 0
nr_writeback 0
nr_writeback_temp 0
nr_shmem 178741
nr_shmem_hugepages 0
nr_shmem_pmdmapped 0
nr_file_hugepages 0
nr_file_pmdmapped 0
nr_anon_transparent_hugepages 1
nr_vmscan_write 0
nr_vmscan_immediate_reclaim 0
nr_dirtied 0
nr_written 0
nr_throttled_written 0
nr_kernel_misc_reclaimable 0
nr_foll_pin_acquired 0
nr_foll_pin_released 0
nr_kernel_stack 2780
nr_page_table_pages 344
nr_sec_page_table_pages 0
nr_swapcached 0
pgpromote_success 0
pgpromote_candidate 0
nr_dirty_threshold 356564
nr_dirty_background_threshold 178064
pgpgin 890508
pgpgout 0
pswpin 0
pswpout 0
pgalloc_dma 272
pgalloc_dma32 261
pgalloc_normal 1328079
pgalloc_movable 0
pgalloc_device 0
allocstall_dma 0
allocstall_dma32 0
allocstall_normal 0
allocstall_movable 0
allocstall_device 0
pgskip_dma 0
pgskip_dma32 0
pgskip_normal 0
pgskip_movable 0
pgskip_device 0
pgfree 3077011
pgactivate 0
pgdeactivate 0
pglazyfree 0
pgfault 176973
pgmajfault 488
pglazyfreed 0
pgrefill 0
pgreuse 19230
pgsteal_kswapd 0
pgsteal_direct 0
pgsteal_khugepaged 0
pgdemote_kswapd 0
pgdemote_direct 0
pgdemote_khugepaged 0
pgscan_kswapd 0
pgscan_direct 0
pgscan_khugepaged 0
pgscan_direct_throttle 0
pgscan_anon 0
pgscan_file 0
pgsteal_anon 0
pgsteal_file 0
zone_reclaim_failed 0
pginodesteal 0
slabs_scanned 0
kswapd_inodesteal 0
kswapd_low_wmark_hit_quickly 0
kswapd_high_wmark_hit_quickly 0
pageoutrun 0
pgrotated 0
drop_pagecache 0
drop_slab 0
oom_kill 0
numa_pte_updates 0
numa_huge_pte_updates 0
numa_hint_faults 0
numa_hint_faults_local 0
numa_pages_migrated 0
pgmigrate_success 0
pgmigrate_fail 0
thp_migration_success 0
thp_migration_fail 0
thp_migration_split 0
compact_migrate_scanned 0
compact_free_scanned 0
compact_isolated 0
compact_stall 0
compact_fail 0
compact_success 0
compact_daemon_wake 0
compact_daemon_migrate_scanned 0
compact_daemon_free_scanned 0
htlb_buddy_alloc_success 0
htlb_buddy_alloc_fail 0
cma_alloc_success 0
cma_alloc_fail 0
unevictable_pgs_culled 27002
unevictable_pgs_scanned 0
unevictable_pgs_rescued 744
unevictable_pgs_mlocked 744
unevictable_pgs_munlocked 744
unevictable_pgs_cleared 0
unevictable_pgs_stranded 0
thp_fault_alloc 13
thp_fault_fallback 0
thp_fault_fallback_charge 0
thp_collapse_alloc 4
thp_collapse_alloc_failed 0
thp_file_alloc 0
thp_file_fallback 0
thp_file_fallback_charge 0
thp_file_mapped 0
thp_split_page 0
thp_split_page_failed 0
thp_deferred_split_page 1
thp_split_pmd 1
thp_scan_exceed_none_pte 0
thp_scan_exceed_swap_pte 0
thp_scan_exceed_share_pte 0
thp_split_pud 0
thp_zero_page_alloc 0
thp_zero_page_alloc_failed 0
thp_swpout 0
thp_swpout_fallback 0
balloon_inflate 0
balloon_deflate 0
balloon_migrate 0
swap_ra 0
swap_ra_hit 0
ksm_swpin_copy 0
cow_ksm 0
zswpin 0
zswpout 0
direct_map_level2_splits 29
direct_map_level3_splits 0
nr_unstable 0
EOF
fi
if [ ! -f "${INSTALLED_ROOTFS_DIR}/${distro_name}/proc/.sysctl_entry_cap_last_cap" ]; then
cat <<- EOF > "${INSTALLED_ROOTFS_DIR}/${distro_name}/proc/.sysctl_entry_cap_last_cap"
40
EOF
fi
}
command_install_help() {
msg
msg "${BYELLOW}Usage: ${BCYAN}${PROGRAM_NAME} ${GREEN}install ${CYAN}[${GREEN}OPTIONS${CYAN}] [${GREEN}DISTRIBUTION ALIAS${CYAN}]${RST}"
msg
msg "${CYAN}Command aliases: ${GREEN}add${CYAN}, ${GREEN}i${CYAN}, ${GREEN}in${CYAN}, ${GREEN}ins${RST}"
msg
msg "${CYAN}Install a specified Linux distribution.${RST}"
msg
msg "${CYAN}Options:${RST}"
msg
msg " ${GREEN}--help ${CYAN}- Show this help information.${RST}"
msg
msg " ${GREEN}--override-alias [new alias] ${CYAN}- Set a custom alias for installed${RST}"
msg " ${CYAN}distribution.${RST}"
msg
msg "${CYAN}Selected distribution should be referenced by alias which can be${RST}"
msg "${CYAN}obtained by this command: ${GREEN}${PROGRAM_NAME} list${RST}"
msg