Commit 9c4e395a authored by Toke Høiland-Jørgensen's avatar Toke Høiland-Jørgensen Committed by Alexei Starovoitov
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selftests/bpf: Add tests for automatic map unpinning on load failure



This add tests for the different variations of automatic map unpinning on
load failure.

Signed-off-by: default avatarToke Høiland-Jørgensen <toke@redhat.com>
Signed-off-by: default avatarAlexei Starovoitov <ast@kernel.org>
Acked-by: default avatarAndrii Nakryiko <andriin@fb.com>
Acked-by: default avatarDavid S. Miller <davem@davemloft.net>
Acked-by: default avatarSong Liu <songliubraving@fb.com>
Link: https://lore.kernel.org/bpf/157333184838.88376.8243704248624814775.stgit@toke.dk
parent ec6d5f47
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+17 −3
Original line number Diff line number Diff line
@@ -163,12 +163,15 @@ void test_pinning(void)
		goto out;
	}

	/* swap pin paths of the two maps */
	/* set pin paths so that nopinmap2 will attempt to reuse the map at
	 * pinpath (which will fail), but not before pinmap has already been
	 * reused
	 */
	bpf_object__for_each_map(map, obj) {
		if (!strcmp(bpf_map__name(map), "nopinmap"))
			err = bpf_map__set_pin_path(map, nopinpath2);
		else if (!strcmp(bpf_map__name(map), "nopinmap2"))
			err = bpf_map__set_pin_path(map, pinpath);
		else if (!strcmp(bpf_map__name(map), "pinmap"))
			err = bpf_map__set_pin_path(map, NULL);
		else
			continue;

@@ -181,6 +184,17 @@ void test_pinning(void)
	if (CHECK(err != -EINVAL, "param mismatch load", "err %d errno %d\n", err, errno))
		goto out;

	/* nopinmap2 should have been pinned and cleaned up again */
	err = stat(nopinpath2, &statbuf);
	if (CHECK(!err || errno != ENOENT, "stat nopinpath2",
		  "err %d errno %d\n", err, errno))
		goto out;

	/* pinmap should still be there */
	err = stat(pinpath, &statbuf);
	if (CHECK(err, "stat pinpath", "err %d errno %d\n", err, errno))
		goto out;

	bpf_object__close(obj);

	/* test auto-pinning at custom path with open opt */
+1 −1
Original line number Diff line number Diff line
@@ -21,7 +21,7 @@ struct {
} nopinmap SEC(".maps");

struct {
	__uint(type, BPF_MAP_TYPE_ARRAY);
	__uint(type, BPF_MAP_TYPE_HASH);
	__uint(max_entries, 1);
	__type(key, __u32);
	__type(value, __u64);