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authorP. J. McDermott <pj@pehjota.net>2018-04-26 18:33:09 (EDT)
committer P. J. McDermott <pj@pehjota.net>2018-04-26 18:33:09 (EDT)
commit8aaba16047f903ca1b5ceb3eb60a64a4151efba7 (patch)
tree9310d981edd84e0e87c2ef2e771ee67c72f4f09e
parent72f987f893278675daf5034ccca5947509efdf2e (diff)
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bin/hwmon: New script
-rwxr-xr-x.gitignore.d/fluxbox1
-rwxr-xr-xbin/hwmon237
2 files changed, 238 insertions, 0 deletions
diff --git a/.gitignore.d/fluxbox b/.gitignore.d/fluxbox
index fb4d452..fb53c6c 100755
--- a/.gitignore.d/fluxbox
+++ b/.gitignore.d/fluxbox
@@ -17,6 +17,7 @@
!/bin/
!/bin/chdt
!/bin/dpmsmouse
+!/bin/hwmon
!/bin/volmon
!/.fehbg
!/.gitattributes.d/
diff --git a/bin/hwmon b/bin/hwmon
new file mode 100755
index 0000000..cc583c4
--- /dev/null
+++ b/bin/hwmon
@@ -0,0 +1,237 @@
+#!/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 "${@}"