mirror of
https://github.com/xdp-project/bpf-examples.git
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90 lines
1.7 KiB
Bash
90 lines
1.7 KiB
Bash
#
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# Common functions used by scripts in this directory
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# - Depending on bash 3 (or higher) syntax
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#
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# Author: Jesper Dangaaard Brouer <netoptimizer@brouer.com>
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# License: GPLv2
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## -- sudo trick --
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function root_check_run_with_sudo() {
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# Trick so, program can be run as normal user, will just use "sudo"
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# call as root_check_run_as_sudo "$@"
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if [ "$EUID" -ne 0 ]; then
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if [ -x $0 ]; then # Directly executable use sudo
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echo "# (Not root, running with sudo)" >&2
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sudo "$0" "$@"
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exit $?
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fi
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echo "cannot perform sudo run of $0"
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exit 1
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fi
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}
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## -- General shell logging cmds --
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function err() {
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local exitcode=$1
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shift
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echo -e "ERROR: $@" >&2
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exit $exitcode
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}
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function warn() {
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echo -e "WARN : $@" >&2
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}
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function info() {
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if [[ -n "$VERBOSE" ]]; then
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echo "# $@"
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fi
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}
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## -- Wrapper calls for TC --
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function _call_tc() {
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local allow_fail="$1"
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shift
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if [[ -n "$VERBOSE" ]]; then
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echo "tc $@"
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fi
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if [[ -n "$DRYRUN" ]]; then
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return
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fi
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$TC "$@"
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local status=$?
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if (( $status != 0 )); then
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if [[ "$allow_fail" == "" ]]; then
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err 3 "Exec error($status) occurred cmd: \"$TC $@\""
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fi
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fi
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}
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function call_tc() {
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_call_tc "" "$@"
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}
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function call_tc_allow_fail() {
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_call_tc "allow_fail" "$@"
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}
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## -- Wrapper calls for IP --
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function _call_ip() {
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local allow_fail="$1"
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shift
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if [[ -n "$VERBOSE" ]]; then
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echo "ip $@"
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fi
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if [[ -n "$DRYRUN" ]]; then
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return
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fi
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$IP "$@"
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local status=$?
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if (( $status != 0 )); then
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if [[ "$allow_fail" == "" ]]; then
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err 3 "Exec error($status) occurred cmd: \"$IP $@\""
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fi
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fi
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}
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function call_ip() {
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_call_ip "" "$@"
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}
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function call_ip_allow_fail() {
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_call_ip "allow_fail" "$@"
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}
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