ablfs-more
trunk
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Last change
on this file since 09ac7fc was cff36a7, checked in by Pierre Labastie <pierre.labastie@…>, 12 months ago |
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Fix session management in run-in-cgroup.sh
Still WIP but some progress...
When moving a shell to a cgroup not associated with a session,
then subsequent calls to pam_systemd or pam_elogind create
a new session, and a new cgroup for that session, so that the
cgroup of the calling process is not used (this is a problem
with both systemd and elogind). For systemd, the problem can be
solved by passing --slice <user slice> to systemd-run. For elogind,
we need to first move the shell to a non session cgroup, then run
sudo so that a new session is created, then pass the cpuset to that
session's cgroup. Hopefully, if neither systemd nor elgind is used,
then the former solution should work (to be tested!!!).
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-
Property mode
set to
100755
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File size:
1.2 KB
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| 1 | #!/bin/bash
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| 2 |
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| 3 | if [ -z "$CPUSPEC" ] || [ "$#" -lt 1 ]; then
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| 4 | echo "usage: CPUSPEC=... $0 command"
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| 5 | exit 1
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| 6 | fi
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| 7 |
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| 8 | set +e
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| 9 |
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| 10 | if type systemd-run >/dev/null 2>&1 ; then # systemd
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| 11 | sudo systemd-run -G --pty -d --uid=$(whoami) \
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| 12 | -p AllowedCPUs="$CPUSPEC" \
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| 13 | --slice "user-$(whoami).slice" \
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| 14 | "$@"
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| 15 | elif type loginctl >/dev/null 2>&1 ; then #elogind
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| 16 | sudo mkdir /sys/fs/cgroup/jhalfs
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| 17 | sudo sh -c "echo +cpuset > /sys/fs/cgroup/cgroup.subtree_control"
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| 18 | (
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| 19 | sudo sh -c "echo $BASHPID > /sys/fs/cgroup/jhalfs/cgroup.procs"
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| 20 | sudo -u $(whoami) sh <<EOF
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| 21 | SESS_CGROUP=/sys/fs/cgroup/\$XDG_SESSION_ID
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| 22 | sudo sh -c "echo \\"$CPUSPEC\\" > \$SESS_CGROUP/cpuset.cpus"
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| 23 | (sudo sh -c "echo \$BASHPID > \$SESS_CGROUP/cgroup.procs" &&
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| 24 | exec $@)
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| 25 | EOF
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| 26 | )
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| 27 | sudo rmdir /sys/fs/cgroup/jhalfs
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| 28 | else # no session manager
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| 29 | sudo mkdir /sys/fs/cgroup/jhalfs
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| 30 | sudo sh -c "echo +cpuset > /sys/fs/cgroup/cgroup.subtree_control"
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| 31 | sudo sh -c "echo \"$CPUSPEC\" > /sys/fs/cgroup/jhalfs/cpuset.cpus"
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| 32 | (sudo sh -c "echo $BASHPID > /sys/fs/cgroup/jhalfs/cgroup.procs" &&
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| 33 | exec "$@")
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| 34 | sudo rmdir /sys/fs/cgroup/jhalfs
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| 35 | fi
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