initrd: boot dd-written hybrid ISOs in mount-usb and usb-autoboot - #2186
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initrd: boot dd-written hybrid ISOs in mount-usb and usb-autoboot#2186tlaurion wants to merge 7 commits into
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Verified working without regression under qemu on thumb drives with multiple isos dropped on it and directly booting on iso from qemu: both work. |
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verified dd'ed and iso boot on debian-13 xfce too. |
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Was testing Kicksecure-LXQt-18.1.4.2.Intel_AMD64.iso, will test Kicksecure-LXQt-18.2.1.9.Intel_AMD64.iso |
- mount-usb.sh: probe whole USB disks with a read-only mount (first_mountable_usb_disk) instead of blkid TYPE=iso9660; --whole-disk opts in, the default remains partitions-only - media-scan.sh: retry once with the partitions-only mount when a whole disk mounts but yields no boot entries - gui_functions.sh: mount_usb() forwards its arguments to mount-usb.sh and maps exit 5 (picker abort) to exit 1 - functions.sh: add first_mountable_usb_disk and is_whole_disk; host _get_blkid_fstype for kexec-iso-init.sh Signed-off-by: Thierry Laurion <insurgo@riseup.net>
Enable CONFIG_FEATURE_BLKID_TYPE so BusyBox blkid reports the filesystem TYPE, which kexec-iso-init.sh's _get_blkid_fstype (shared from initrd/etc/functions.sh) relies on. Part of the issue linuxboot#2008 hybrid ISO boot fix. Signed-off-by: Thierry Laurion <insurgo@riseup.net>
Move initrd/tests/iso-test/ to tests/iso-test/ so the test script no longer ships inside the initrd image. Signed-off-by: Thierry Laurion <insurgo@riseup.net>
Update boot-process, busybox_perks, iso_boot and logging docs for the kernel mount-test mechanism and the mount-usb.sh exit 5 contract. Signed-off-by: Thierry Laurion <insurgo@riseup.net>
…B autoboot test board - Add qemu-coreboot-fbwhiptail-tpm2-basic-usb-autoboot board with CONFIG_BASIC_USB_AUTOBOOT=y to test automatic boot of bootable USB media (dd-written hybrid ISO) under QEMU - Enable CONFIG_DEBUG_OUTPUT and TPM2 pcap capture for test diagnostics Signed-off-by: Thierry Laurion <insurgo@riseup.net>
- Print the source git commit (GIT_HASH and HEADS_GIT_VERSION) in the build start banner so non-reproducible builds are attributable to the commit that produced them - Part of issue linuxboot#2008 follow-up Signed-off-by: Thierry Laurion <insurgo@riseup.net>
Document that the last console= parameter becomes the primary console for /dev/console, and how that routes STATUS/NOTE (primary only), DEBUG/WARN/DIE (kmsg broadcast to all consoles), kernel printk (all consoles), and whiptail dialogs (framebuffer only). Part of issue linuxboot#2008 follow-up. Signed-off-by: Thierry Laurion <insurgo@riseup.net>
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Tested with oversized raw image vs iso size (thumb drives should always be bigger then iso...) and now works as expected. |
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Summary
Fixes #2008: a Kicksecure hybrid ISO dd'd to a USB drive
now boots in both the manual USB boot menu and Basic-mode auto-boot.
The problem
A dd-written Kicksecure ISO is a GPT hybrid whose bootable iso9660
filesystem lives on the whole raw device, not on a partition. The boot
path relied on
blkid TYPE="iso9660"to detect such drives, which doesnot reliably report the type on these oversized/GPT-hybrid sticks, so no
bootable filesystem was found and boot failed.
The fix
non-destructive read-only mount probe that finds a bootable filesystem
on a whole device) and is_whole_disk(); host _get_blkid_fstype()
(moved from kexec-iso-init.sh).
disks with an actual read-only mount instead of blkid; the default
remains partitions-only.
mount_usb --whole-disk, and retries once with the defaultpartitions-only mount when a whole disk mounts but yields no boot
entries.
mount-usb.sh and maps exit 5 (picker abort) to exit 1.
a dd-written hybrid ISO auto-boots in Basic mode.
reports the filesystem TYPE used by kexec-iso-init.sh.
board (Basic mode + USB autoboot) for this path.
longer ships in the initrd image.
Testing
boot menu in manual mode, and auto-boots in Basic mode; Tails, Debian
live, and partitioned images (NixOS) still boot through the existing
paths.