mirror of
https://github.com/alexbelgium/hassio-addons.git
synced 2026-04-03 04:30:37 +02:00
41 lines
1.2 KiB
Bash
41 lines
1.2 KiB
Bash
#!/usr/bin/env bash
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set -euo pipefail
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SCRIPT_PATH="$(readlink -f "$0")"
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REAL_SYSCTL_CMD=()
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_maybe_set_backend() {
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local candidate="$1"
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if [[ -x "${candidate}" && "$(readlink -f "${candidate}")" != "${SCRIPT_PATH}" ]]; then
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REAL_SYSCTL_CMD=("${candidate}")
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return 0
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fi
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return 1
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}
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# Prefer system binaries that are not the wrapper itself
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_maybe_set_backend "/sbin/sysctl" \
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|| _maybe_set_backend "/usr/sbin/sysctl" \
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|| _maybe_set_backend "/bin/sysctl" \
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|| _maybe_set_backend "/usr/bin/sysctl"
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# Fallback to the busybox applet if no dedicated binary was found
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if [[ ${#REAL_SYSCTL_CMD[@]} -eq 0 ]] && command -v busybox >/dev/null 2>&1; then
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REAL_SYSCTL_CMD=("$(command -v busybox)" sysctl)
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fi
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if [[ ${#REAL_SYSCTL_CMD[@]} -eq 0 ]]; then
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echo "sysctl wrapper: no backend sysctl binary found" >&2
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exit 1
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fi
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if [[ "$#" -ge 2 && "$1" == "-q" && "$2" == "net.ipv4.conf.all.src_valid_mark=1" ]]; then
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if "${REAL_SYSCTL_CMD[@]}" "$@" >/dev/null 2>&1; then
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exit 0
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fi
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# Suppress failure for this specific key to keep wg-quick from aborting in unprivileged environments.
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exit 0
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fi
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exec "${REAL_SYSCTL_CMD[@]}" "$@"
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