/etc/sv/socklog-notify/run is in socklog-run 2.1.0-8.
This file is owned by root:root, with mode 0o755.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 | #!/bin/sh -e
MAILTO=root
PIPE=/var/log/socklog/.notify
if [ ! -p "$PIPE" ]; then mkfifo -m0620 "$PIPE"; chown log:adm "$PIPE"; fi
exec <> "$PIPE"
exec chpst -ulog uncat -s49999 -t180 \
env MAILUSER=log MAILNAME='socklog notify' \
mail -s socklog-notify $MAILTO
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