mirror of
git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
synced 2025-08-05 16:54:27 +00:00
68 lines
1.8 KiB
Bash
68 lines
1.8 KiB
Bash
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#!/usr/bin/env bash
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# SPDX-License-Identifier: GPL-2.0
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# This test verifies that users can successfully create up to
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# MAX_USERDATA_ITEMS userdata entries without encountering any failures.
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#
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# Additionally, it tests for expected failure when attempting to exceed this
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# maximum limit.
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#
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# Author: Breno Leitao <leitao@debian.org>
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set -euo pipefail
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SCRIPTDIR=$(dirname "$(readlink -e "${BASH_SOURCE[0]}")")
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source "${SCRIPTDIR}"/lib/sh/lib_netcons.sh
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# This is coming from netconsole code. Check for it in drivers/net/netconsole.c
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MAX_USERDATA_ITEMS=16
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# Function to create userdata entries
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function create_userdata_max_entries() {
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# All these keys should be created without any error
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for i in $(seq $MAX_USERDATA_ITEMS)
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do
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# USERDATA_KEY is used by set_user_data
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USERDATA_KEY="key"${i}
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set_user_data
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done
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}
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# Function to verify the entry limit
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function verify_entry_limit() {
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# Allowing the test to fail without exiting, since the next command
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# will fail
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set +e
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mkdir "${NETCONS_PATH}/userdata/key_that_will_fail" 2> /dev/null
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ret="$?"
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set -e
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if [ "$ret" -eq 0 ];
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then
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echo "Adding more than ${MAX_USERDATA_ITEMS} entries in userdata should fail, but it didn't" >&2
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ls "${NETCONS_PATH}/userdata/" >&2
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exit "${ksft_fail}"
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fi
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}
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# ========== #
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# Start here #
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# ========== #
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modprobe netdevsim 2> /dev/null || true
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modprobe netconsole 2> /dev/null || true
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# Check for basic system dependency and exit if not found
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check_for_dependencies
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# Remove the namespace, interfaces and netconsole target on exit
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trap cleanup EXIT
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# Create one namespace and two interfaces
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set_network
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# Create a dynamic target for netconsole
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create_dynamic_target
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# populate the maximum number of supported keys in userdata
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create_userdata_max_entries
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# Verify an additional entry is not allowed
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verify_entry_limit
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exit "${ksft_pass}"
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