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|
#!/bin/sh
set -eu
debug=0
err()
{
local fmt="${1}"
shift 1
printf "Error: ${fmt}\n" "${@}" 1>&2
return 0
}
dbg()
{
local fmt="${1}"
shift 1
case "${debug}" in '1')
printf "DEBUG: ${fmt}\n" "${@}" 1>&2
esac
return 0
}
lookup_chips()
{
local hwmon_dir=
local hwmon=
local name=
for hwmon_dir in /sys/class/hwmon/hwmon*; do
hwmon="${hwmon_dir#/sys/class/hwmon/}"
if [ -f "${hwmon_dir}/name" ]; then
read -r name <"${hwmon_dir}/name"
elif [ -f "${hwmon_dir}/device/name" ]; then
read -r name <"${hwmon_dir}/device/name"
else
return 1
fi
printf '%s %s\n' "${hwmon}" "${name}"
dbg 'Chip %s = %s' "${name}" "${hwmon}"
done
return 0
}
lookup_chip()
{
local chip="${1}"
local chips="${2}"
shift 2
local hwmon=
local name=
while read -r hwmon name; do
case "${name}" in "${chip}")
printf '%s' "${hwmon}"
return 0
esac
done <<-EOF
${chips}
EOF
return 1
}
read_value()
{
local hwmon="${1}"
local element="${2}"
shift 2
local hwmon_dir=
local value=
hwmon_dir="/sys/class/hwmon/${hwmon}"
if [ -f "${hwmon_dir}/${element}_input" ]; then
read -r value <"${hwmon_dir}/${element}_input"
elif [ -f "${hwmon_dir}/device/${element}_input" ]; then
read -r value <"${hwmon_dir}/device/${element}_input"
else
return 1
fi
printf '%s' "${value}"
return 0
}
format_temp()
{
local hwmon="${1}"
local element="${2}"
shift 2
local value=
value="$(read_value "${hwmon}" "${element}")" || return 1
printf '%d C' "${value%???}"
return 0
}
format_fan()
{
local hwmon="${1}"
local element="${2}"
shift 2
local value=
value="$(read_value "${hwmon}" "${element}")" || return 1
printf '%d RPM' "${value}"
return 0
}
format_power()
{
local hwmon="${1}"
local element="${2}"
shift 2
local value=
value="$(read_value "${hwmon}" "${element}")" || return 1
printf '%d W' "${value%??????}"
return 0
}
print_sensor()
{
local label="${1}"
local len=${2}
local chip="${3}"
local chips="${4}"
local element="${5}"
shift 5
local hwmon=
local value=
local i=
if ! hwmon="$(lookup_chip "${chip}" "${chips}")"; then
err 'Unknown chip "%s"' "${chip}"
return 1
fi
case "${element}" in
'temp'*)
value="$(format_temp "${hwmon}" "${element}")" || \
return 1
;;
'fan'*)
value="$(format_fan "${hwmon}" "${element}")" || \
return 1
;;
'power'*)
value="$(format_power "${hwmon}" "${element}")" || \
return 1
;;
*)
err 'Unsupported type of element "%s"' "${element}"
return 1
;;
esac
printf ' %s:' "${label}"
i=${#label}
while [ ${i} -lt ${len} ]; do
printf ' '
i=$((${i} + 1))
done
printf ' %s\n' "${value}"
return 0
}
usage()
{
printf 'Usage: %s [-d] %s [%s ...]\n' "${0}" \
'<label>:<chip>/<element>' '<label>:<chip>/<element>'
}
main()
{
local opt=
local chips=
local max_len=
local sensor=
local label=
local len=
local chip=
local element=
while getopts 'd' opt "${@}"; do
case "${opt}" in
'd') debug=1;;
'?')
usage 1>&2
return 1
;;
esac
done
shift $((${OPTIND} - 1))
if [ ${#} -lt 1 ]; then
usage 1>&2
return 1
fi
chips="$(lookup_chips)" || return 1
max_len=0
for sensor in "${@}"; do
label="${sensor%%:*}"
len=${#label}
if [ ${len} -gt ${max_len} ]; then
max_len=${len}
fi
done
for sensor in "${@}"; do
label="${sensor%%:*}"
sensor="${sensor#*:}"
case "${sensor}" in '')
printf '%s\n' "${label}"
continue
esac
chip="${sensor%/*}"
element="${sensor##*/}"
print_sensor "${label}" ${len} \
"${chip}" "${chips}" "${element}" || return 1
done
return 0
}
main "${@}"
|
