#!/bin/sh
#
# Copyright (c) 2022-2023, Jesús Daniel Colmenares Oviedo <DtxdF@disroot.org>
# All rights reserved.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions are met:
#
# * Redistributions of source code must retain the above copyright notice, this
#   list of conditions and the following disclaimer.
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#   this software without specific prior written permission.
#
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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lib_load "${LIBDIR}/check_func"
lib_load "${LIBDIR}/jail"

cpuset_desc="Configure processor sets for jails."

cpuset_main()
{
	local jail_name="$1" cpu_list="$2"
	if lib_check_empty "${jail_name}"; then
		cpuset_usage
		exit ${EX_USAGE}
	fi

	if ! lib_check_jailname "${jail_name}"; then
		lib_err ${EX_DATAERR} "Invalid jail name \"${jail_name}\""
	fi

	if [ ! -d "${JAILDIR}/${jail_name}" ]; then
		lib_err ${EX_NOINPUT} "Cannot find the jail \`${jail_name}\`"
	fi

	if ! lib_jail_exists "${jail_name}"; then
		lib_warn -- "${jail_name} is not running."
		exit 0
	fi

	if ! lib_jail_created_by_appjail "${jail_name}"; then
		lib_warn -- "${jail_name} was not been created by appjail."
		exit 0
	fi

	if lib_check_empty "${cpu_list}"; then
		cpuset_show "${jail_name}"
	else
		cpuset_cmd "${jail_name}" "${cpu_list}"
	fi
}

cpuset_show()
{
	local jail_name="$1"
	if [ -z "${jail_name}" ]; then
		lib_err ${EX_USAGE} "usage: cpuset_show jail_name"
	fi

	cpuset -gj "${jail_name}" | head -1 | cut -d':' -f2- | sed -Ee 's/^ //'
}

cpuset_cmd()
{
	local jail_name="$1" cpu_list="$2"
	if [ -z "${jail_name}" -o -z "${cpu_list}" ]; then
		lib_err ${EX_USAGE} "usage: cpuset_cmd jail_name cpu_list"
	fi

	local new_list
	new_list=`lib_check_cpulist "${cpu_list}"` || exit $?

	lib_debug "CPU Sets: ${new_list}; Jail: ${jail_name}"

	cpuset -j "${jail_name}" -cl "${new_list}"
}

cpuset_help()
{
	man 1 appjail-cpuset
}

cpuset_usage()
{
	cat << EOF
usage: cpuset <jail>
       cpuset <jail> <cpu-list>
EOF
}
