mirror of
https://github.com/SerenityOS/serenity
synced 2026-04-25 17:15:42 +02:00
20c2100676
In environments without any `SERENITY*` variables, grep returns an exit status of 1. This patch ensures that the subcommand exits with status 0 regardless of whether grep finds a match. This prevents the script from bailing out when `set -eo pipefail` is enabled.
134 lines
3.8 KiB
Bash
134 lines
3.8 KiB
Bash
# shellcheck shell=bash
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# shellcheck disable=SC2034
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# SC2034: "Variable appears unused. Verify it or export it."
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# Those are intentional here, as the file is meant to be included elsewhere.
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# NOTE: If using another privilege escalation binary make sure it is configured or has the appropriate flag
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# to keep the current environment variables in the launched process (in sudo's case this is achieved
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# through the -E flag described in sudo(8).
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die() {
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echo "die: $*"
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exit 1
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}
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if [ "$(uname -s)" = "SerenityOS" ]; then
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SUDO="pls -E"
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elif command -v sudo >/dev/null; then
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# Preserve all environment variables starting with SERENITY.
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SERENITY_VARS=$(env | cut -d= -f1 | (grep '^SERENITY' || [[ $? -eq 1 ]]) | tr '\n' ',' | sed 's/,$//')
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SUDO="sudo --preserve-env=$SERENITY_VARS"
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elif command -v doas >/dev/null; then
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if [ "$SUDO_UID" = '' ]; then
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SUDO_UID=$(id -u)
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SUDO_GID=$(id -g)
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export SUDO_UID SUDO_GID
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fi
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# To make doas work, you have to make sure you use the "keepenv" flag in doas.conf
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SUDO="doas"
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else
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die "You need sudo, doas or pls to build Serenity..."
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fi
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exit_if_running_as_root() {
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if [ "$(id -u)" -eq 0 ]; then
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die "$*"
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fi
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}
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find_executable() {
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paths=("/usr/sbin" "/sbin")
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if [ "$(uname -s)" = "Darwin" ]; then
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if [ -n "${HOMEBREW_PREFIX:-}" ]; then
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paths+=("${HOMEBREW_PREFIX}/opt/e2fsprogs/bin" "${HOMEBREW_PREFIX}/opt/e2fsprogs/sbin")
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elif command -v brew > /dev/null 2>&1; then
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if prefix=$(brew --prefix e2fsprogs 2>/dev/null); then
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paths+=("${prefix}/bin" "${prefix}/sbin")
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fi
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fi
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fi
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executable="${1}"
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# Prefer tools from PATH over fallback paths
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if command -v "${executable}"; then
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return 0
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fi
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for path in "${paths[@]}"; do
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if command -v "${path}/${executable}"; then
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return 0
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fi
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done
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# We return the executable's name back to provide meaningful messages on future failure
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echo "${executable}"
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}
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FUSE2FS_PATH="$(find_executable fuse2fs)"
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RESIZE2FS_PATH="$(find_executable resize2fs)"
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E2FSCK_PATH="$(find_executable e2fsck)"
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MKE2FS_PATH="$(find_executable mke2fs)"
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get_number_of_processing_units() {
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number_of_processing_units="nproc"
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SYSTEM_NAME="$(uname -s)"
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if [ "$SYSTEM_NAME" = "OpenBSD" ]; then
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number_of_processing_units="sysctl -n hw.ncpuonline"
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elif [ "$SYSTEM_NAME" = "FreeBSD" ]; then
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number_of_processing_units="sysctl -n hw.ncpu"
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elif [ "$SYSTEM_NAME" = "Darwin" ]; then
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number_of_processing_units="sysctl -n hw.ncpu"
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fi
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($number_of_processing_units)
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}
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# Discover how to get apparent size from `du`. GNU/BusyBox du has --apparent-size / -b, uutils has to use --apparent-size due to a -b bug, BSD/Darwin du has `-A`.
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if du --help 2>&1 | grep -qE "GNU coreutils|BusyBox"; then
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DU_APPARENT_SIZE_FLAG="-b"
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elif du -V 2>&1 | grep -qE "uutils"; then
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DU_APPARENT_SIZE_FLAG="--apparent-size"
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else
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DU_APPARENT_SIZE_FLAG="-A"
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fi
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disk_usage() {
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# shellcheck disable=SC2003,SC2307
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expr "$(du ${DU_APPARENT_SIZE_FLAG} -sm "$1" | cut -f1)"
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}
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inode_usage() {
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find "$1" | wc -l
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}
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check_sha256() {
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if [ $# -ne 2 ]; then
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error "Usage: check_sha256 FILE EXPECTED_HASH"
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return 1
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fi
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FILE="${1}"
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EXPECTED_HASH="${2}"
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SYSTEM_NAME="$(uname -s)"
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if [ "$SYSTEM_NAME" = "Darwin" ]; then
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SEEN_HASH="$(shasum -a 256 "${FILE}" | cut -d " " -f 1)"
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else
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SEEN_HASH="$(sha256sum "${FILE}" | cut -d " " -f 1)"
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fi
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test "${EXPECTED_HASH}" = "${SEEN_HASH}"
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}
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HOST_ARCH=$(uname -m)
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if [ "$HOST_ARCH" = "x86_64" ] || [ "$HOST_ARCH" = "amd64" ] || [ "$HOST_ARCH" = "x64" ]; then
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HOST_ARCH="x86_64"
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elif [ "$HOST_ARCH" = "aarch64" ] || [ "$HOST_ARCH" = "arm64" ]; then
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HOST_ARCH="aarch64"
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elif [ "$HOST_ARCH" = "riscv64" ]; then
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HOST_ARCH="riscv64"
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else
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die "Unknown host architecture: $HOST_ARCH"
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fi
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