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Merged
StaticRocket merged 2 commits into from
Oct 7, 2025
Merged

Chore/clean init #458

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e16ea59
chore(init): remove unnecessary parsing logic
StaticRocket Oct 1, 2025
64ec455
feat(init): reduce to posix shell
StaticRocket Oct 1, 2025
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23 changes: 6 additions & 17 deletions docker/root/init
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Original file line number Diff line number Diff line change
@@ -1,31 +1,20 @@
#!/bin/bash
#!/bin/sh

# SPDX-License-Identifier: MIT
# Copyright (C) 2024 Texas Instruments Incorporated - https://www.ti.com

get_attribs() {
local file_stats file_to_test useful_attribs
if file_to_test=$(realpath "$1") && [[ $2 =~ ^[0-9]+$ ]] ; then
useful_attribs=$(stat "$file_to_test" -t)
read -r -a file_stats <<< "${useful_attribs#"$file_to_test"}"
echo "${file_stats["$2"]}"
else
return 1
fi
}

get_build_uid() {
get_attribs /build 3
stat -c '%u' /build
}

get_build_gid() {
get_attribs /build 4
stat -c '%g' /build
}

if NEW_GID=$(get_build_gid) && NEW_UID=$(get_build_uid); then
# bypass everything if podman is remapping the id to root
if [ "${NEW_UID}" == "0" ]; then
if [ "$(id -u)" == "0" ]; then
if [ "${NEW_UID}" = "0" ]; then
if [ "$(id -u)" = "0" ]; then
exec dumb-init -- "$@"
else
echo "Unable to resolve ns mapping!"
Expand All @@ -39,7 +28,7 @@ else
echo "Not able to detect UID/GID for remapping!"
fi

if [ "$(id -u)" == "$(id -u abc)" ]; then
if [ "$(id -u)" = "$(id -u abc)" ]; then
exec dumb-init -- "$@"
else
exec dumb-init -- su-exec abc:abc "$@"
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