selftests/bpf: Check inner map deletion

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Add a test case to check whether an unsuccessful creation of an outer
map of a BTF-defined map-in-map destroys the inner map.

As bpf_object__create_map() is a static function, we cannot just call it
from the test case and then check whether a map accessible via
map->inner_map_fd has been closed. Instead, we iterate over all maps and
check whether the map "$MAP_NAME.inner" does not exist.

Signed-off-by: Martynas Pumputis <m@lambda.lt>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Acked-by: John Fastabend <john.fastabend@gmail.com>
Link: https://lore.kernel.org/bpf/20210719173838.423148-3-m@lambda.lt

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Martynas Pumputis 2021-07-19 19:38:38 +02:00 • committed by Andrii Nakryiko

parent a21ab4c59e

commit 08f71a1e39

2 changed files with 88 additions and 1 deletions

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26

tools/testing/selftests/bpf/progs/test_map_in_map_invalid.c

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63

tools/testing/selftests/bpf/test_maps.c

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