47 lines
688 B
Bash
47 lines
688 B
Bash
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#!/bin/bash
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LOCKDIR="/tmp/snapshotslocks/"
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[ ! -d "$LOCKDIR" ] && mkdir -p "$LOCKDIR"
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createlock() {
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LOCKNAME=$1
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[ -f "$LOCKDIR/$LOCKNAME.lock" ] && exit 1
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touch "$LOCKDIR/$LOCKNAME.lock"
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exit 0
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}
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deletelock() {
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LOCKNAME=$1
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[ ! -f "$LOCKDIR/$LOCKNAME.lock" ] && exit 1
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rm "$LOCKDIR/$LOCKNAME.lock"
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exit 0
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}
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haslock() {
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if ls $LOCKDIR/* 1> /dev/null 2>&1; then
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exit 0
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else
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exit 1
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fi
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}
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case $1 in
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lock)
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createlock $2
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;;
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unlock)
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deletelock $2
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;;
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haslock)
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haslock
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;;
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show)
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ls $LOCKDIR
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;;
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*)
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echo "What is $1" >&2
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exit 1
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esac
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