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From: "'Felix Moessbauer' via isar-users" <isar-users@googlegroups.com>
To: isar-users@googlegroups.com
Cc: quirin.gylstorff@siemens.com,
	Felix Moessbauer <felix.moessbauer@siemens.com>
Subject: [RFC 01/12] refactor bootstrap: store rootfs tar with user permissions
Date: Wed, 18 Feb 2026 12:58:16 +0100	[thread overview]
Message-ID: <20260218115827.3947145-2-felix.moessbauer@siemens.com> (raw)
In-Reply-To: <20260218115827.3947145-1-felix.moessbauer@siemens.com>

As the mmdebstrap itself is executed as root, the generated rootfs will
also be owned by root when stored as file. To avoid this, we let
mmdebstrap emit the rootfs on stdout and write it to a file outside of
the sudo call.

Signed-off-by: Felix Moessbauer <felix.moessbauer@siemens.com>
---
 .../isar-mmdebstrap/isar-mmdebstrap.inc             | 13 ++++++-------
 1 file changed, 6 insertions(+), 7 deletions(-)

diff --git a/meta/recipes-core/isar-mmdebstrap/isar-mmdebstrap.inc b/meta/recipes-core/isar-mmdebstrap/isar-mmdebstrap.inc
index 73fe9434..d5bbae70 100644
--- a/meta/recipes-core/isar-mmdebstrap/isar-mmdebstrap.inc
+++ b/meta/recipes-core/isar-mmdebstrap/isar-mmdebstrap.inc
@@ -240,11 +240,11 @@ do_bootstrap() {
                    ${@get_apt_opts(d, '--aptopt')} \
                    ${@get_distro_components_argument(d)} \
                    "${@get_distro_suite(d)}" \
-                   "${WORKDIR}/rootfs.tar.zst" \
-                   "$bootstrap_list"
+                   - \
+                   "$bootstrap_list" > ${WORKDIR}/rootfs.tar.zst
 
     # Finalize bootstrap by setting the link in deploy
-    sudo ln -Tfsr "${WORKDIR}/rootfs.tar.zst" "${DEPLOY_ISAR_BOOTSTRAP}.tar.zst"
+    ln -Tfsr "${WORKDIR}/rootfs.tar.zst" "${DEPLOY_ISAR_BOOTSTRAP}.tar.zst"
 
     if [ "${ISAR_USE_CACHED_BASE_REPO}" != "1" ]; then
         deb_dl_dir_export "${WORKDIR}/dl_dir" "${BOOTSTRAP_BASE_DISTRO}-${BASE_DISTRO_CODENAME}"
@@ -259,8 +259,7 @@ SSTATEPOSTINSTFUNCS += "bootstrap_sstate_finalize"
 
 bootstrap_sstate_prepare() {
     # this runs in SSTATE_BUILDDIR, which will be deleted automatically
-    sudo cp -a "${WORKDIR}/rootfs.tar.zst" ./bootstrap.tar.zst
-    sudo chown $(id -u):$(id -g) bootstrap.tar.zst
+    cp -a "${WORKDIR}/rootfs.tar.zst" ./bootstrap.tar.zst
 }
 
 bootstrap_sstate_finalize() {
@@ -268,8 +267,8 @@ bootstrap_sstate_finalize() {
     # we should restore symlinks after using tar
     if [ -f bootstrap.tar.zst ]; then
         mv bootstrap.tar.zst "${WORKDIR}/rootfs.tar.zst"
-        sudo ln -Tfsr "${WORKDIR}/rootfs.tar.zst" \
-                      "${DEPLOY_ISAR_BOOTSTRAP}.tar.zst"
+        ln -Tfsr "${WORKDIR}/rootfs.tar.zst" \
+                 "${DEPLOY_ISAR_BOOTSTRAP}.tar.zst"
     fi
 }
 
-- 
2.51.0

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  reply	other threads:[~2026-02-18 11:58 UTC|newest]

Thread overview: 19+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2026-02-18 11:58 [RFC 00/12] add support to build isar unprivileged 'Felix Moessbauer' via isar-users
2026-02-18 11:58 ` 'Felix Moessbauer' via isar-users [this message]
2026-02-18 11:58 ` [RFC 02/12] deb-dl-dir: export without root privileges 'Felix Moessbauer' via isar-users
2026-02-18 14:01   ` 'Jan Kiszka' via isar-users
2026-02-18 11:58 ` [RFC 03/12] download debs without locking 'Felix Moessbauer' via isar-users
2026-02-18 11:58 ` [RFC 04/12] introduce wrappers for privileged execution 'Felix Moessbauer' via isar-users
2026-02-18 14:11   ` 'Jan Kiszka' via isar-users
2026-02-18 11:58 ` [RFC 05/12] bootstrap: move cleanup trap to function 'Felix Moessbauer' via isar-users
2026-02-18 11:58 ` [RFC 06/12] rootfs: rework sstate caching of rootfs artifact 'Felix Moessbauer' via isar-users
2026-02-18 11:58 ` [RFC 07/12] rootfs_generate_initramfs: rework deployment to avoid chowning 'Felix Moessbauer' via isar-users
2026-02-18 11:58 ` [RFC 08/12] wic: rework image deploy logic to deploy under correct user 'Felix Moessbauer' via isar-users
2026-02-18 11:58 ` [RFC 09/12] use bitbake function to generate mounting scripts 'Felix Moessbauer' via isar-users
2026-02-18 11:58 ` [RFC 10/12] apt-fetcher: prepare for chroot specific fetching 'Felix Moessbauer' via isar-users
2026-02-18 11:58 ` [RFC 11/12] add support for fully rootless builds 'Felix Moessbauer' via isar-users
2026-02-18 16:09   ` 'Jan Kiszka' via isar-users
2026-02-18 16:50   ` 'Jan Kiszka' via isar-users
2026-02-18 11:58 ` [RFC 12/12] apt-fetcher: implement support for unshare backend 'Felix Moessbauer' via isar-users
2026-02-18 18:20 ` [RFC 00/12] add support to build isar unprivileged 'Jan Kiszka' via isar-users
2026-02-18 18:31   ` 'Jan Kiszka' via isar-users

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