Ertuğrul Erata
55 lines
1.2 KiB
Bash
Executable File
55 lines
1.2 KiB
Bash
Executable File
#!/bin/sh
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# Copyright 2011 Canonical, Inc
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# 2014 Tianon Gravi
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# Author: Serge Hallyn <serge.hallyn@canonical.com>
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# Tianon Gravi <admwiggin@gmail.com>
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set -e
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# for simplicity this script provides no flexibility
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# if cgroup is mounted by fstab, don't run
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# don't get too smart - bail on any uncommented entry with 'cgroup' in it
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if grep -v '^#' /etc/fstab | grep -q cgroup; then
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echo 'cgroups mounted from fstab, not mounting /sys/fs/cgroup'
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exit 0
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fi
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# kernel provides cgroups?
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if [ ! -e /proc/cgroups ]; then
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exit 0
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fi
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# if we don't even have the directory we need, something else must be wrong
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if [ ! -d /sys/fs/cgroup ]; then
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exit 0
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fi
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# mount /sys/fs/cgroup if not already done
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if ! mountpoint -q /sys/fs/cgroup; then
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mount -t tmpfs -o uid=0,gid=0,mode=0755 cgroup /sys/fs/cgroup
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fi
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cd /sys/fs/cgroup
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# get/mount list of enabled cgroup controllers
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for sys in $(awk '!/^#/ { if ($4 == 1) print $1 }' /proc/cgroups); do
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mkdir -p $sys
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if ! mountpoint -q $sys; then
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if ! mount -n -t cgroup -o $sys cgroup $sys; then
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rmdir $sys || true
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fi
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fi
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done
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# example /proc/cgroups:
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# #subsys_name hierarchy num_cgroups enabled
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# cpuset 2 3 1
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# cpu 3 3 1
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# cpuacct 4 3 1
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# memory 5 3 0
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# devices 6 3 1
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# freezer 7 3 1
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# blkio 8 3 1
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exit 0
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