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fixed

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Urban Modig
2025-10-01 10:39:23 +02:00
parent 5a4434ce0d
commit 5c5a15ea2a
1 changed files with 16 additions and 6 deletions
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20
download.sh
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@ -33,19 +33,29 @@ WORKDIR=$(mktemp -d "$TMPDIR/${SCRIPT_NAME%.sh}.XXXXXX")
cleanup_tmp() { rm -rf "$WORKDIR" 2>/dev/null || true; } cleanup_tmp() { rm -rf "$WORKDIR" 2>/dev/null || true; }
# ----------------------------- lock/unlock logic ------------------------------ # ----------------------------- lock/unlock logic ------------------------------
# Use a fixed numeric FD (200) for wider Bash compatibility (e.g., macOS bash 3.2).
LOCK_FD=200 LOCK_FD=200
LOCK_FILE="/tmp/${SCRIPT_NAME}.lock" LOCK_FILE="/tmp/${SCRIPT_NAME}.lock"
LOCK_HELD=0
lock() { lock() {
log "Creating lock… ($LOCK_FILE)" log "Creating lock… ($LOCK_FILE)"
# shellcheck disable=SC2094 exec ${LOCK_FD}>"$LOCK_FILE" || die "Could not open lock file $LOCK_FILE"
exec {LOCK_FD}>"$LOCK_FILE" || die "Could not open lock file $LOCK_FILE" if flock -n ${LOCK_FD}; then
if ! flock -n "$LOCK_FD"; then LOCK_HELD=1
else
die "Lock failed — another process is running." die "Lock failed — another process is running."
fi fi
} }
unlock() { unlock() {
log "Releasing lock…" if (( LOCK_HELD )); then
flock -u "$LOCK_FD" || true log "Releasing lock…"
flock -u ${LOCK_FD} || true
# Close the FD to avoid lingering descriptors
exec ${LOCK_FD}>&- || true
LOCK_HELD=0
fi
} }
# Always cleanup on exit/interrupt # Always cleanup on exit/interrupt