41 lines
910 B
Bash
41 lines
910 B
Bash
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#!/bin/bash -e
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# SPDX-License-Identifier: GPL-2.0
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#
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# This test checks that the network buffer sysctls are present
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# in a network namespaces, and that they are readonly.
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source lib.sh
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cleanup() {
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cleanup_ns $test_ns
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}
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trap cleanup EXIT
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fail() {
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echo "ERROR: $*" >&2
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exit 1
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}
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setup_ns test_ns
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for sc in {r,w}mem_{default,max}; do
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# check that this is writable in a netns
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[ -w "/proc/sys/net/core/$sc" ] ||
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fail "$sc isn't writable in the init netns!"
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# change the value in the host netns
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sysctl -qw "net.core.$sc=300000" ||
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fail "Can't write $sc in init netns!"
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# check that the value is read from the init netns
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[ "$(ip netns exec $test_ns sysctl -n "net.core.$sc")" -eq 300000 ] ||
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fail "Value for $sc mismatch!"
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# check that this isn't writable in a netns
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ip netns exec $test_ns [ -w "/proc/sys/net/core/$sc" ] &&
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fail "$sc is writable in a netns!"
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done
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echo 'Test passed OK'
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