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Check the write permission on /sys/power/disk when hibernate #123

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Check the write permission on /sys/power/disk when hibernate #123

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5 changes: 4 additions & 1 deletion zzz
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Original file line number Diff line number Diff line change
Expand Up @@ -36,7 +36,10 @@ case "$ZZZ_MODE" in
hibernate) grep -q disk /sys/power/state || fail "hibernate not supported";;
esac

test -w /sys/power/state || fail "sleep permission denied"
if ! [ -w /sys/power/state ] || {
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@classabbyamp classabbyamp Feb 12, 2025 •
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! ... || is a double-negative and makes it highly painful to understand what the logic is supposed to be in this if statement. nested ifs would make this much more readable

! [ -w /sys/power/disk ] && [ "$ZZZ_MODE" = hibernate ];}; then
fail "sleep permission denied"
fi

(
flock -n 9 || fail "another instance of zzz is running"
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