diff --git a/RECIPE-API-CHANGELOG.md b/RECIPE-API-CHANGELOG.md index 6653ab43..e6861523 100644 --- a/RECIPE-API-CHANGELOG.md +++ b/RECIPE-API-CHANGELOG.md @@ -583,3 +583,9 @@ Cross compiling kernel modules for distro kernels is not supported in debian. To simplify downstream kernel module builds, we automatically turn of cross compilation for a user-provided module when building it for a distro kernel. + +### Build against debian snapshot mirror + +To build against a distributions snapshot mirror, set `ISAR_USE_APT_SNAPSHOT="1"`. +The mirror to use is specified in `DISTRO_APT_SNAPSHOT_PREMIRROR` and usually +pre-defined in the distro config. diff --git a/doc/user_manual.md b/doc/user_manual.md index 419d5339..70741968 100644 --- a/doc/user_manual.md +++ b/doc/user_manual.md @@ -431,6 +431,9 @@ Some other variables include: - `HOST_DISTRO_APT_PREFERENCES` - List of apt preference files for SDK root filesystem. This variable is optional. - `HOST_DISTRO_BOOTSTRAP_KEYS` - Analogously to DISTRO_BOOTSTRAP_KEYS: List of gpg key URIs used to verify apt bootstrap repo for the host. - `DISTRO_APT_PREMIRRORS` - The preferred mirror (append it to the default URI in the format `ftp.debian.org my.preferred.mirror`. This variable is optional. PREMIRRORS will be used only for the build. The final images will have the sources list as mentioned in DISTRO_APT_SOURCES. + - `ISAR_USE_APT_SNAPSHOT` - Use a frozen apt snapshot instead of the live mirror. Optional. + - `DISTRO_APT_SNAPSHOT_PREMIRROR` - Similar to `DISTRO_APT_PREMIRRORS` but for a snapshot, pre-defined for supported distros. + - `ISAR_APT_SNAPSHOT_TIMESTAMP` - Timestamp of the apt snapshot. Automatically derived from `SOURCE_DATE_EPOCH` if not overwritten. - `THIRD_PARTY_APT_KEYS` - List of gpg key URIs used to verify apt repos for apt installation after bootstrapping. - `FILESEXTRAPATHS` - The default directories BitBake uses when it processes recipes are initially defined by the FILESPATH variable. You can extend FILESPATH variable by using FILESEXTRAPATHS. - `FILESOVERRIDES` - A subset of OVERRIDES used by the build system for creating FILESPATH. The FILESOVERRIDES variable uses overrides to automatically extend the FILESPATH variable. diff --git a/meta-isar/conf/distro/ubuntu-common.inc b/meta-isar/conf/distro/ubuntu-common.inc index 9d8a843b..54bb747a 100644 --- a/meta-isar/conf/distro/ubuntu-common.inc +++ b/meta-isar/conf/distro/ubuntu-common.inc @@ -32,3 +32,6 @@ IMAGE_PREINSTALL += "init" IMAGE_PREINSTALL += "initramfs-tools" IMAGER_INSTALL:wic += "python3-distutils" + +# snapshot mirror for reproducible builds +DISTRO_APT_SNAPSHOT_PREMIRROR ??= "(http|https)://archive.ubuntu.com/(.*) https://snapshot.ubuntu.com/\2/${APT_SNAPSHOT_DATE}/\n" diff --git a/meta/conf/bitbake.conf b/meta/conf/bitbake.conf index 1da3ecac..4cfa8b10 100644 --- a/meta/conf/bitbake.conf +++ b/meta/conf/bitbake.conf @@ -145,6 +145,9 @@ export SOURCE_DATE_EPOCH ?= "${@get_source_date_epoch_value(d)}" # A SOURCE_DATE_EPOCH of '0' might be misinterpreted as no SDE # ISAR: set value to date of latest release SOURCE_DATE_EPOCH_FALLBACK ??= "1709565251" +# Debian snapshots +ISAR_USE_APT_SNAPSHOT ??= "0" +ISAR_APT_SNAPSHOT_TIMESTAMP ??= "${SOURCE_DATE_EPOCH}" # Default parallelism and resource usage for xz XZ_MEMLIMIT ?= "50%" diff --git a/meta/conf/distro/debian-common.conf b/meta/conf/distro/debian-common.conf index 1e1dfc83..db538510 100644 --- a/meta/conf/distro/debian-common.conf +++ b/meta/conf/distro/debian-common.conf @@ -39,3 +39,6 @@ SYSTEMD_BOOTLOADER_INSTALL:sid = "systemd-boot-efi:${DISTRO_ARCH}" COMPAT_DISTRO_ARCH:amd64 = "i386" COMPAT_DISTRO_ARCH:arm64 = "armhf" + +# snapshot mirror for reproducible builds +DISTRO_APT_SNAPSHOT_PREMIRROR ??= "deb.debian.org/(.*) snapshot-cloudflare.debian.org/archive/\1/${APT_SNAPSHOT_DATE}/\n" \ No newline at end of file diff --git a/meta/recipes-core/isar-bootstrap/isar-bootstrap.inc b/meta/recipes-core/isar-bootstrap/isar-bootstrap.inc index 17f19fd8..733a23df 100644 --- a/meta/recipes-core/isar-bootstrap/isar-bootstrap.inc +++ b/meta/recipes-core/isar-bootstrap/isar-bootstrap.inc @@ -30,6 +30,9 @@ DISTRO_VARS_PREFIX ?= "${@'HOST_' if bb.utils.to_boolean(d.getVar('BOOTSTRAP_FOR BOOTSTRAP_DISTRO = "${@d.getVar('HOST_DISTRO' if bb.utils.to_boolean(d.getVar('BOOTSTRAP_FOR_HOST')) else 'DISTRO')}" BOOTSTRAP_BASE_DISTRO = "${@d.getVar('HOST_BASE_DISTRO' if bb.utils.to_boolean(d.getVar('BOOTSTRAP_FOR_HOST')) else 'BASE_DISTRO')}" FILESEXTRAPATHS:append = ":${BBPATH}" +# reproducible builds, only enabled if ISAR_USE_APT_SNAPSHOT +ISAR_APT_SNAPSHOT_MIRROR ??= "" +APT_SNAPSHOT_DATE = "${@ get_apt_snapshot_date(d)}" inherit deb-dl-dir @@ -107,11 +110,21 @@ def parse_aptsources_list_line(source_list_line): return [type, options, source, suite, components] +def get_apt_snapshot_date(d): + import time + source_date_epoch = d.getVar('ISAR_APT_SNAPSHOT_TIMESTAMP') + return time.strftime('%Y%m%dT%H%M%SZ', time.gmtime(int(source_date_epoch))) + def get_apt_source_mirror(d, aptsources_entry_list): import re + # this is executed during parsing. No error checking possible + use_snapshot = bb.utils.to_boolean(d.getVar('ISAR_USE_APT_SNAPSHOT')) + snapshot_mirror = d.getVar('DISTRO_APT_SNAPSHOT_PREMIRROR') if bb.utils.to_boolean(d.getVar('ISAR_USE_CACHED_BASE_REPO')): premirrors = "\S* file://${REPO_BASE_DIR}/${BOOTSTRAP_BASE_DISTRO}\n" + elif use_snapshot and snapshot_mirror: + premirrors = snapshot_mirror else: premirrors = d.getVar('DISTRO_APT_PREMIRRORS') or "" mirror_list = [entry.split() @@ -126,6 +139,8 @@ def get_apt_source_mirror(d, aptsources_entry_list): new_aptsources_entry_list[2] = re.sub(regex, replace, aptsources_entry_list[2], count = 1) + if use_snapshot: + new_aptsources_entry_list[1] = "[check-valid-until=no]" return new_aptsources_entry_list return aptsources_entry_list @@ -240,6 +255,7 @@ do_apt_config_prepare[vardeps] += " \ APTSRCS \ ${DISTRO_VARS_PREFIX}DISTRO_APT_SOURCES \ DEPLOY_ISAR_BOOTSTRAP \ + ${@'DISTRO_APT_SNAPSHOT_PREMIRROR' if bb.utils.to_boolean(d.getVar('ISAR_USE_APT_SNAPSHOT')) else ''} \ " python do_apt_config_prepare() { apt_preferences_out = d.getVar("APTPREFS")