Greg Kroah-Hartman
598cf27219
Link: https://lore.kernel.org/r/20260217200002.683975158@linuxfoundation.org Tested-by: Florian Fainelli <florian.fainelli@broadcom.com> Tested-by: Takeshi Ogasawara <takeshi.ogasawara@futuring-girl.com> Tested-by: Peter Schneider <pschneider1968@googlemail.com> Tested-by: Jon Hunter <jonathanh@nvidia.com> Tested-by: Salvatore Bonaccorso <carnil@debian.org> Tested-by: Brett A C Sheffield <bacs@librecast.net> Tested-by: Mark Brown <broonie@kernel.org> Tested-by: Luna Jernberg <droidbittin@gmail.com> Tested-by: Ronald Warsow <rwarsow@gmx.de> Tested-by: Justin M. Forbes <jforbes@fedoraproject.org> Tested-by: Ron Economos <re@w6rz.net> Tested-by: Miguel Ojeda <ojeda@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
41 lines
910 B
Bash
Executable File
41 lines
910 B
Bash
Executable File
#!/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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