Greg Kroah-Hartman
598cf27219
Link: https://lore.kernel.org/r/20260217200002.683975158@linuxfoundation.org Tested-by: Florian Fainelli <florian.fainelli@broadcom.com> Tested-by: Takeshi Ogasawara <takeshi.ogasawara@futuring-girl.com> Tested-by: Peter Schneider <pschneider1968@googlemail.com> Tested-by: Jon Hunter <jonathanh@nvidia.com> Tested-by: Salvatore Bonaccorso <carnil@debian.org> Tested-by: Brett A C Sheffield <bacs@librecast.net> Tested-by: Mark Brown <broonie@kernel.org> Tested-by: Luna Jernberg <droidbittin@gmail.com> Tested-by: Ronald Warsow <rwarsow@gmx.de> Tested-by: Justin M. Forbes <jforbes@fedoraproject.org> Tested-by: Ron Economos <re@w6rz.net> Tested-by: Miguel Ojeda <ojeda@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
132 lines
2.2 KiB
Bash
132 lines
2.2 KiB
Bash
#!/bin/bash
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# SPDX-License-Identifier: GPL-2.0
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# Whether to pause and allow debugging when an executed deferred command has a
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# non-zero exit code.
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: "${DEFER_PAUSE_ON_FAIL:=no}"
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# map[(scope_id,track,cleanup_id) -> cleanup_command]
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# track={d=default | p=priority}
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declare -A __DEFER__JOBS
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# map[(scope_id,track) -> # cleanup_commands]
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declare -A __DEFER__NJOBS
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# scope_id of the topmost scope.
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__DEFER__SCOPE_ID=0
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__defer__ndefer_key()
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{
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local track=$1; shift
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echo $__DEFER__SCOPE_ID,$track
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}
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__defer__defer_key()
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{
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local track=$1; shift
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local defer_ix=$1; shift
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echo $__DEFER__SCOPE_ID,$track,$defer_ix
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}
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__defer__ndefers()
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{
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local track=$1; shift
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echo ${__DEFER__NJOBS[$(__defer__ndefer_key $track)]}
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}
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__defer__run()
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{
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local track=$1; shift
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local defer_ix=$1; shift
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local defer_key=$(__defer__defer_key $track $defer_ix)
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local ret
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eval ${__DEFER__JOBS[$defer_key]}
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ret=$?
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if [[ "$DEFER_PAUSE_ON_FAIL" == yes && "$ret" -ne 0 ]]; then
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echo "Deferred command (track $track index $defer_ix):"
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echo " ${__DEFER__JOBS[$defer_key]}"
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echo "... ended with an exit status of $ret"
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echo "Hit enter to continue, 'q' to quit"
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read a
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[[ "$a" == q ]] && exit 1
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fi
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unset __DEFER__JOBS[$defer_key]
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}
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__defer__schedule()
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{
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local track=$1; shift
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local ndefers=$(__defer__ndefers $track)
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local ndefers_key=$(__defer__ndefer_key $track)
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local defer_key=$(__defer__defer_key $track $ndefers)
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local defer="${@@Q}"
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__DEFER__JOBS[$defer_key]="$defer"
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__DEFER__NJOBS[$ndefers_key]=$((ndefers + 1))
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}
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__defer__scope_wipe()
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{
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__DEFER__NJOBS[$(__defer__ndefer_key d)]=0
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__DEFER__NJOBS[$(__defer__ndefer_key p)]=0
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}
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defer_scope_push()
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{
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((__DEFER__SCOPE_ID++))
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__defer__scope_wipe
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}
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defer_scope_pop()
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{
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local defer_ix
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for ((defer_ix=$(__defer__ndefers p); defer_ix-->0; )); do
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__defer__run p $defer_ix
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done
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for ((defer_ix=$(__defer__ndefers d); defer_ix-->0; )); do
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__defer__run d $defer_ix
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done
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__defer__scope_wipe
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((__DEFER__SCOPE_ID--))
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}
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defer()
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{
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__defer__schedule d "$@"
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}
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defer_prio()
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{
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__defer__schedule p "$@"
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}
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defer_scopes_cleanup()
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{
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while ((__DEFER__SCOPE_ID >= 0)); do
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defer_scope_pop
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done
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}
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in_defer_scope()
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{
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local ret
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defer_scope_push
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"$@"
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ret=$?
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defer_scope_pop
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return $ret
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}
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__defer__scope_wipe
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