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[explorer/memory] Clean up, return kiB for all systems, add SunOS

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BSDs were MiB before.
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ssrq 2021-02-08 08:27:03 +01:00 • committed by Darko Poljak
commit cda17be38a
1 changed files with 68 additions and 17 deletions
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85
cdist/conf/explorer/memory
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@ -1,8 +1,9 @@
#!/bin/sh
#!/bin/sh -e
#
# 2014 Daniel Heule (hda at sfs.biz)
# 2014 Thomas Oettli (otho at sfs.biz)
# Copyright 2017, Philippe Gregoire <pg@pgregoire.xyz>
# 2020 Dennis Camera <dennis.camera at ssrq-sds-fds.ch>
#
# This file is part of cdist.
#
@ -19,24 +20,74 @@
# You should have received a copy of the GNU General Public License
# along with cdist. If not, see <http://www.gnu.org/licenses/>.
#
#
# Returns the amount of memory physically installed in the system, or if that
# cannot be determined the amount available to the operating system kernel,
# in kibibytes (kiB).
# FIXME: other system types (not linux ...)
str2bytes() {
awk -F' ' '
$2 == "B" || !$2 { print $1 }
$2 == "kB" { print $1 * 1000 }
$2 == "MB" { print $1 * 1000 * 1000 }
$2 == "GB" { print $1 * 1000 * 1000 * 1000 }
$2 == "TB" { print $1 * 1000 * 1000 * 1000 * 1000 }
$2 == "kiB" { print $1 * 1024 }
$2 == "MiB" { print $1 * 1024 * 1024 }
$2 == "GiB" { print $1 * 1024 * 1024 * 1024 }
$2 == "TiB" { print $1 * 1024 * 1024 * 1024 * 1024 }'
}
os=$("$__explorer/os")
case "$os" in
"macosx")
echo "$(sysctl -n hw.memsize)/1024" | bc
;;
bytes2kib() {
set -- "$(cat)"
test "$1" -gt 0 && echo $(($1 / 1024))
}
*"bsd")
PATH=$(getconf PATH)
echo "$(sysctl -n hw.physmem) / 1048576" | bc
;;
*)
if [ -r /proc/meminfo ]; then
grep "MemTotal:" /proc/meminfo | awk '{print $2}'
fi
;;
case $(uname -s)
in
(Darwin)
sysctl -n hw.memsize | bytes2kib
;;
(FreeBSD)
sysctl -n hw.realmem | bytes2kib
;;
(NetBSD|OpenBSD)
# NOTE: This reports "usable" memory, not physically installed memory.
command -p sysctl -n hw.physmem | bytes2kib
;;
(SunOS)
# Make sure that awk from xpg4 is used for the scripts to work
export PATH="/usr/xpg4/bin:${PATH}"
prtconf \
| awk -F ': ' '
$1 == "Memory size" { sub(/Megabytes/, "MiB", $2); print $2 }
/^$/ { exit }' \
| str2bytes \
| bytes2kib
;;
(Linux)
if test -d /sys/devices/system/memory
then
# Use memory blocks if the architecture (e.g. x86, PPC64, s390)
# supports them (they denote physical memory)
num_mem_blocks=$(cat /sys/devices/system/memory/memory[0-9]*/state | grep -cxF online)
mem_block_size=$(cat /sys/devices/system/memory/block_size_bytes)
echo $((num_mem_blocks * 0x$mem_block_size)) | bytes2kib && exit
fi
if test -r /proc/meminfo
then
# Fall back to meminfo file on other architectures (e.g. ARM, MIPS,
# PowerPC)
# NOTE: This is "usable" memory, not physically installed memory.
awk -F ': +' '$1 == "MemTotal" { sub(/B$/, "iB", $2); print $2 }' /proc/meminfo \
| str2bytes \
| bytes2kib
fi
;;
(*)
printf "Your kernel (%s) is currently not supported by the memory explorer\n" "$(uname -s)" >&2
printf "Please contribute an implementation for it if you can.\n" >&2
exit 1
;;
esac