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test: ignore IAB capabilities in test-execute

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libcap v2.33 introduces a new capability set called IAB[0] which is shown
in the output of `capsh --print` and interferes with the test checks. Let's
drop the IAB set from the output, for now, to mitigate this.

This could be (and probably should be) replaced in the future by the
newly introduced testing options[1][2] in libcap v2.32, namely:
    --has-p=xxx
    --has-i=xxx
    --has-a=xxx

but this needs to wait until the respective libcap version gets a wider
adoption. Until then, let's stick with the relatively ugly sed.

Fixes: #15046

[0] https://git.kernel.org/pub/scm/libs/libcap/libcap.git/commit/?id=943b011b5e53624eb9cab4e96c1985326e077cdd
[1] https://git.kernel.org/pub/scm/libs/libcap/libcap.git/commit/?id=588d0439cb6495b03f0ab9f213f0b6b339e7d4b7
[2] https://git.kernel.org/pub/scm/libs/libcap/libcap.git/commit/?id=e7709bbc1c4712f2ddfc6e6f42892928a8a03782
This commit is contained in:
Frantisek Sumsal
2020-03-09 18:22:16 +01:00
parent 908055f61f
commit e9cdcbed77
9 changed files with 18 additions and 18 deletions
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test/test-execute/exec-protectkernelmodules-no-capabilities.service
+2 -2
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@@ -3,6 +3,6 @@ Description=Test CAP_SYS_MODULE ProtectKernelModules=no
[Service]
ProtectKernelModules=no
# sed: remove dropped capabilities (cap_xxx-[epi]) from the output
ExecStart=/bin/sh -x -c 'capsh --print | sed -r "s/[^ ]+?\-[epi]+//g" | grep cap_sys_module'
# sed: remove dropped (cap_xxx-[epi]) and IAB capabilities from the output
ExecStart=/bin/sh -x -c 'capsh --print | sed -re "s/[^ ]+?\-[epi]+//g" -e '/IAB/d' | grep cap_sys_module'
Type=oneshot