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[Arista] Add secure fast-reboot support in boot0 (#4994)

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Samuel Angebault 2020-07-27 18:56:25 -07:00 committed by GitHub
parent ee4197e9f8
commit ddf9fdde72
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1 changed files with 26 additions and 8 deletions
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34
files/Aboot/boot0.j2
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@ -81,7 +81,6 @@ installer_image_path="$image_path/$installer_image"
boot_config="$target_path/boot-config"
flash_re=" /mnt/flash| /host"
cmdline_allowlist='crashkernel'
# for backward compatibility with the sonic_upgrade= behavior
@ -256,6 +255,24 @@ cleanup_swi_tmpfs() {
clean_tmpfs "$(dirname "$swipath")"
}
mount_relpath() {
local abspath="$1"
local mountpath="$(df "$abspath" | sed -nr '/\//s/^.* ([^ ]+)$/\1/p')"
echo "$abspath" | sed "s#^$mountpath/##"
}
zip_file_offset() {
local zipfile="$1"
local filename="$2"
if $in_aboot; then
unzip -qqf "$zipfile" "$filename"
else
local hexoffset="$(zipdetails "$zipfile" | sed -En "/Filename +'$filename'/,/^$/p" | sed -En 's/^([^ ]+) PAYLOAD$/\1/p')"
echo "$((0x$hexoffset))"
fi
}
SWI_ALREADY_INSTALLED=0
SWI_NOT_INSTALLED=1
@ -374,7 +391,7 @@ prepare_image_secureboot() {
sync
# override environment variables preventing external tamper on kernel execution
CMDLINE="$(cmdline_echo)"
CMDLINE="$(cmdline_echo) $ENV_EXTRA_CMDLINE"
KERNEL="$(find_first_kernel_under "$boot_tmpfs")"
INITRD="$(find_first_initrd_under "$boot_tmpfs")"
}
@ -415,7 +432,7 @@ write_platform_specific_cmdline() {
local varlog_size=100
# detect the size of the flash partition from name in Aboot/EOS/SONiC
local flash_size=$(($(df | grep -E "$flash_re" | tr -s ' ' | cut -f2 -d' ') / 1000))
local flash_size=$(($(df "$target_path" | tail -1 | tr -s ' ' | cut -f2 -d' ') / 1000))
if [ "$platform" = "raven" ]; then
# Assuming sid=Cloverdale
@ -548,8 +565,9 @@ write_image_specific_cmdline() {
fi
# Obtain root partition uuid
local rootdev="$(mount | grep -E "$flash_re" | cut -f1 -d' ')"
local rootfstype="$(mount | grep -E "$flash_re" | cut -f5 -d' ')"
local mountstr="$(mount | grep " $target_path ")"
local rootdev="$(echo $mountstr | cut -f1 -d' ')"
local rootfstype="$(echo $mountstr | cut -f5 -d' ')"
local rootuuid="$(get_uuid_for $rootdev)"
if [ -z "$rootuuid" ] || [ "$rootfstype" = "vfat" ] ; then
cmdline_add "root=$rootdev"
@ -589,9 +607,9 @@ write_common_configs() {
write_secureboot_configs() {
write_common_configs
cmdline_add "loop=$(echo "$installer_image_path" | sed 's/mnt\/flash\///')"
cmdline_add "loop=$(mount_relpath "$installer_image_path")"
cmdline_add loopfstype=squashfs
cmdline_add "loopoffset=$(unzip -qqf "$installer_image_path" fs.squashfs)"
cmdline_add "loopoffset=$(zip_file_offset "$installer_image_path" fs.squashfs)"
cmdline_add docker_inram=on
cmdline_add secure_boot_enable=y
cmdline_add aboot.secureboot=enabled
@ -640,7 +658,7 @@ run_kexec() {
sync
kexec --load --initrd="$initrd" --append="$cmdline" "$kernel"
[ -z "$testonly" ] || exit 0
( [ -z "$testonly" ] && [ -z "$loadonly" ] ) || exit 0
info "Kexecing..."
kexec --exec
}