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armbian-next: introduce internal base tmp dir; check it early for sanity ref noexec and nodev mount options

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This commit is contained in:
Ricardo Pardini
2022-12-17 13:32:52 +01:00
parent 0c5b10a77b
commit c251073b78
3 changed files with 34 additions and 6 deletions
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13
lib/functions/cli/entrypoint.sh
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@@ -93,13 +93,14 @@ function cli_entrypoint() {
display_alert "Build UUID:" "${ARMBIAN_BUILD_UUID}" "debug"
# Super-global variables, used everywhere. The directories are NOT _created_ here, since this very early stage.
export WORKDIR="${SRC}/.tmp/work-${ARMBIAN_BUILD_UUID}" # WORKDIR at this stage. It will become TMPDIR later. It has special significance to `mktemp` and others!
export LOGDIR="${SRC}/.tmp/logs-${ARMBIAN_BUILD_UUID}" # Will be initialized very soon, literally, below.
declare -g WORKDIR_BASE_TMP="${SRC}/.tmp" # a.k.a. ".tmp" dir.
export WORKDIR="${WORKDIR_BASE_TMP}/work-${ARMBIAN_BUILD_UUID}" # WORKDIR at this stage. It will become TMPDIR later. It has special significance to `mktemp` and others!
export LOGDIR="${WORKDIR_BASE_TMP}/logs-${ARMBIAN_BUILD_UUID}" # Will be initialized very soon, literally, below.
# @TODO: These are used by actual build, move to its cli handler.
export SDCARD="${SRC}/.tmp/rootfs-${ARMBIAN_BUILD_UUID}" # SDCARD (which is NOT an sdcard, but will be, maybe, one day) is where we work the rootfs before final imaging. "rootfs" stage.
export MOUNT="${SRC}/.tmp/mount-${ARMBIAN_BUILD_UUID}" # MOUNT ("mounted on the loop") is the mounted root on final image (via loop). "image" stage
export EXTENSION_MANAGER_TMP_DIR="${SRC}/.tmp/extensions-${ARMBIAN_BUILD_UUID}" # EXTENSION_MANAGER_TMP_DIR used to store extension-composed functions
export DESTIMG="${SRC}/.tmp/image-${ARMBIAN_BUILD_UUID}" # DESTIMG is where the backing image (raw, huge, sparse file) is kept (not the final destination)
export SDCARD="${WORKDIR_BASE_TMP}/rootfs-${ARMBIAN_BUILD_UUID}" # SDCARD (which is NOT an sdcard, but will be, maybe, one day) is where we work the rootfs before final imaging. "rootfs" stage.
export MOUNT="${WORKDIR_BASE_TMP}/mount-${ARMBIAN_BUILD_UUID}" # MOUNT ("mounted on the loop") is the mounted root on final image (via loop). "image" stage
export EXTENSION_MANAGER_TMP_DIR="${WORKDIR_BASE_TMP}/extensions-${ARMBIAN_BUILD_UUID}" # EXTENSION_MANAGER_TMP_DIR used to store extension-composed functions
export DESTIMG="${WORKDIR_BASE_TMP}/image-${ARMBIAN_BUILD_UUID}" # DESTIMG is where the backing image (raw, huge, sparse file) is kept (not the final destination)
# Make sure ARMBIAN_LOG_CLI_ID is set, and unique.
# Pre-runs might change it, but if not set, default to ARMBIAN_COMMAND.

20
lib/functions/host/host-utils.sh
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@@ -210,3 +210,23 @@ function reset_uid_owner() {
fi
done
}
# call: check_dir_for_mount_options "/path/to/dir" "main build dir description"
function check_dir_for_mount_options() {
declare -r dir="${1}"
declare -r description="${2}"
declare src_mount_source="" src_mount_opts=""
src_mount_opts="$(findmnt -T "${dir}" --output OPTIONS --raw --notruncate --noheadings)"
# make sure $src_mount_opts does not contain noexec
if [[ "${src_mount_opts}" == *"noexec"* || "${src_mount_opts}" == *"nodev"* ]]; then
src_mount_source="$(findmnt -T "${dir}" --output SOURCE --raw --notruncate --noheadings)"
display_alert "Directory ${dir} (${description}) is mounted" "from '${src_mount_source}' with options '${src_mount_opts}'" "warn"
exit_with_error "Directory ${dir} (${description}) is mounted with the 'noexec' and/or 'nodev' options; this will cause rootfs build failures. Please correct this before trying again."
fi
display_alert "Checked directory OK for mount options" "${dir} ('${description}')" "info"
return 0
}

7
lib/functions/main/default-build.sh
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@@ -1,6 +1,13 @@
# This does NOT run under the logging manager. We should invoke the do_with_logging wrapper for
# strategic parts of this. Attention: rootfs does it's own logging, so just let that be.
function main_default_build_single() {
# Check that WORKDIR_BASE_TMP exists; if not, create it.
if [[ ! -d "${WORKDIR_BASE_TMP}" ]]; then
mkdir -p "${WORKDIR_BASE_TMP}"
fi
# Check the sanity of WORKDIR_BASE_TMP regarding mount options.
check_dir_for_mount_options "${WORKDIR_BASE_TMP}" "main temporary dir"
# Starting work. Export TMPDIR, which will be picked up by all `mktemp` invocations hopefully.
# Runner functions in logging/runners.sh will explicitly unset TMPDIR before invoking chroot.