Andrii Nakryiko 189f1a976e libbpf: Fix no-args func prototype BTF dumping syntax ... For all these years libbpf's BTF dumper has been emitting not strictly valid syntax for function prototypes that have no input arguments. Instead of `int (*blah)()` we should emit `int (*blah)(void)`. This is not normally a problem, but it manifests when we get kfuncs in vmlinux.h that have no input arguments. Due to compiler internal specifics, we get no BTF information for such kfuncs, if they are not declared with proper `(void)`. The fix is trivial. We also need to adjust a few ancient tests that happily assumed `()` is correct. Fixes: 351131b51c ("libbpf: add btf_dump API for BTF-to-C conversion") Reported-by: Tejun Heo <tj@kernel.org> Signed-off-by: Andrii Nakryiko <andrii@kernel.org> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net> Acked-by: Stanislav Fomichev <sdf@fomichev.me> Link: https://lore.kernel.org/bpf/20240712224442.282823-1-andrii@kernel.org		2024-07-17 22:42:47 +02:00
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.gitignore	libbpf: Make libbpf_version.h non-auto-generated	2021-09-13 15:36:47 -07:00
bpf_core_read.h	bpf: Avoid uninitialized value in BPF_CORE_READ_BITFIELD	2024-05-08 15:00:55 -07:00
bpf_endian.h	libbpf: Make bpf_endian co-exist with vmlinux.h	2020-07-01 09:06:12 +02:00
bpf_gen_internal.h	libbpf: Support kfunc detection in light skeleton.	2023-03-22 09:31:05 -07:00
bpf_helpers.h	libbpf: Fix bpf_ksym_exists() in GCC	2024-05-02 22:47:22 -07:00
bpf_prog_linfo.c	libbpf: Streamline error reporting for high-level APIs	2021-05-25 17:32:35 -07:00
bpf_tracing.h	libbpf: Avoid casts from pointers to enums in bpf_tracing.h	2024-05-02 22:58:58 -07:00
bpf.c	libbpf: fix feature detectors when using token_fd	2024-05-15 09:34:53 -07:00
bpf.h	libbpf: add support for BPF cookie for raw_tp/tp_btf programs	2024-03-19 23:05:34 -07:00
btf_dump.c	libbpf: Fix no-args func prototype BTF dumping syntax	2024-07-17 22:42:47 +02:00
btf_iter.c	libbpf,bpf: Share BTF relocate-related code with kernel	2024-06-21 14:45:07 -07:00
btf_relocate.c	libbpf: Fix clang compilation error in btf_relocate.c	2024-06-26 16:38:59 -07:00
btf.c	libbpf: Fix error handling in btf__distill_base()	2024-07-01 17:05:08 +02:00
btf.h	libbpf: Make btf_parse_elf process .BTF.base transparently	2024-06-17 14:38:31 -07:00
Build	libbpf: Split field iter code into its own file kernel	2024-06-21 14:45:07 -07:00
elf.c	libbpf: Move feature detection code into its own file	2024-01-24 16:21:02 -08:00
features.c	libbpf: don't close(-1) in multi-uprobe feature detector	2024-05-31 14:56:51 -07:00
gen_loader.c	libbpf: Store zero fd to fd_array for loader kfunc relocation	2023-05-16 22:09:23 -07:00
hashmap.c	libbpf: Hashmap interface update to allow both long and void* keys/values	2022-11-09 20:45:14 -08:00
hashmap.h	libbpf: Remove HASHMAP_INIT static initialization helper	2023-07-11 09:40:05 -07:00
libbpf_common.h	libbpf: Fix potential uninitialized tail padding with LIBBPF_OPTS_RESET	2023-11-09 19:07:51 -08:00
libbpf_errno.c	libbpf: Optimized return value in libbpf_strerror when errno is libbpf errno	2022-12-14 18:39:33 +01:00
libbpf_internal.h	libbpf: Split BTF relocation	2024-06-17 14:38:31 -07:00
libbpf_legacy.h	libbpf: Clean up deprecated and legacy aliases	2022-08-17 22:42:56 +02:00
libbpf_probes.c	bpf: improve error message for unsupported helper	2024-03-28 18:30:53 -07:00
libbpf_version.h	libbpf: Start v1.5 development cycle	2024-04-06 09:11:10 -07:00
libbpf.c	libbpf: improve old BPF skeleton handling for map auto-attach	2024-07-09 19:03:36 -07:00
libbpf.h	libbpf: Auto-attach struct_ops BPF maps in BPF skeleton	2024-06-06 10:06:05 -07:00
libbpf.map	libbpf: Split BTF relocation	2024-06-17 14:38:31 -07:00
libbpf.pc.template	libbpf: Add zlib as a dependency in pkg-config template	2019-12-16 14:55:29 -08:00
linker.c	libbpf: Checking the btf_type kind when fixing variable offsets	2024-06-21 20:00:17 +02:00
Makefile	kbuild: unexport abs_srctree and abs_objtree	2024-03-10 17:27:17 +09:00
netlink.c	libbpf: Use OPTS_SET() macro in bpf_xdp_query()	2024-02-06 09:51:26 -08:00
nlattr.c	libbpf: Fix alen calculation in libbpf_nla_dump_errormsg()	2023-02-10 15:27:22 -08:00
nlattr.h	libbpf: add API to get XDP/XSK supported features	2023-02-02 20:48:24 -08:00
relo_core.c	libbpf: fix signedness determination in CO-RE relo handling logic	2023-08-23 21:13:48 -07:00
relo_core.h	bpf, libbpf: Add type match support	2022-07-05 21:14:25 -07:00
ringbuf.c	libbpf: fix ring_buffer__consume_n() return result logic	2024-05-02 16:41:03 -07:00
skel_internal.h	libbpf: add map_get_fd_by_id and map_delete_elem in light skeleton	2022-08-25 18:52:29 -07:00
str_error.c	libbpf: fix libbpf_strerror_r() handling unknown errors	2024-05-07 16:21:59 -07:00
str_error.h	libbpf: Move feature detection code into its own file	2024-01-24 16:21:02 -08:00
strset.c	libbpf: Hashmap interface update to allow both long and void* keys/values	2022-11-09 20:45:14 -08:00
strset.h	libbpf: Extract internal set-of-strings datastructure APIs	2021-03-18 16:14:22 -07:00
usdt.bpf.h	libbpf: Avoid casts from pointers to enums in bpf_tracing.h	2024-05-02 22:58:58 -07:00
usdt.c	libbpf: Add uprobe multi link support to bpf_program__attach_usdt	2023-08-21 15:51:26 -07:00
zip.c	libbpf: Ignore warnings about "inefficient alignment"	2023-03-16 18:20:08 +01:00
zip.h	libbpf: Implement basic zip archive parsing support	2023-03-01 16:05:34 -08:00