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c56be2c294
We already have this nice code in system that determines the block
device backing the root file system, but it's only used internally in
systemd-gpt-generator. Let's make this more accessible and expose it
directly in bootctl.
It doesn't fit immediately into the topic of bootctl, but I think it's
close enough and behaves very similar to the existing "bootctl
--print-boot-path" and "--print-esp-path" tools.
If --print-root-device (or -R) is specified once, will show the block device
backing the root fs, and if specified twice (probably easier: -RR) it
will show the whole block device that block device belongs to in case it
is a partition block device.
Suggested use:
# cfdisk `bootctl -RR`
To get access to the partition table, behind the OS install, for
whatever it might be.
42 lines
970 B
Bash
Executable file
42 lines
970 B
Bash
Executable file
#!/usr/bin/env bash
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# SPDX-License-Identifier: LGPL-2.1-or-later
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set -e
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set -o pipefail
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bootctl="${1:?}"
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"$bootctl" --no-pager list >/dev/null || {
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echo "$bootctl list failed, skipping tests" 1>&2
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exit 77
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}
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set -x
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"$bootctl" list --json=pretty | python3 -m json.tool >/dev/null
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"$bootctl" list --json=short | python3 -m json.tool >/dev/null
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command -v jq >/dev/null || {
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echo "jq is not available, skipping jq tests" 1>&2
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exit 0
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}
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"$bootctl" list --json=pretty | jq . >/dev/null
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"$bootctl" list --json=short | jq . >/dev/null
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# bootctl --print-root-device should either succeed or fail with exit status 80
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# (because not backed by a single block device), but not fail otherwise.
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"$bootctl" -R || test "$?" -eq 80
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"$bootctl" -RR || test "$?" -eq 80
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if "$bootctl" -R > /dev/null ; then
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P=$("$bootctl" -R)
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PP=$("$bootctl" -RR)
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echo "$P vs $PP"
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test -b "$P"
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test -b "$PP"
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# $P must be a prefix of $PP
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[[ $P = $PP* ]]
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fi
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