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linux/tools/testing/selftests/bpf/progs/bad_struct_ops2.c
Eduard Zingerman 651d49f15b selftests/bpf: Verify struct_ops autoload/autocreate sync
Check that autocreate flags of struct_ops map cause autoload of
struct_ops corresponding programs:
- when struct_ops program is referenced only from a map for which
  autocreate is set to false, that program should not be loaded;
- when struct_ops program with autoload == false is set to be used
  from a map with autocreate == true using shadow var,
  that program should be loaded;
- when struct_ops program is not referenced from any map object load
  should fail.

Signed-off-by: Eduard Zingerman <eddyz87@gmail.com>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Link: https://lore.kernel.org/bpf/20240306104529.6453-10-eddyz87@gmail.com
2024-03-06 15:18:15 -08:00

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C

// SPDX-License-Identifier: GPL-2.0
#include <linux/bpf.h>
#include <bpf/bpf_helpers.h>
char _license[] SEC("license") = "GPL";
/* This is an unused struct_ops program, it lacks corresponding
* struct_ops map, which provides attachment information.
* W/o additional configuration attempt to load such
* BPF object file would fail.
*/
SEC("struct_ops/foo")
void foo(void) {}