Andrii Nakryiko f3dcee938f libbpf: Wire up token_fd into feature probing logic ... Adjust feature probing callbacks to take into account optional token_fd. In unprivileged contexts, some feature detectors would fail to detect kernel support just because BPF program, BPF map, or BTF object can't be loaded due to privileged nature of those operations. So when BPF object is loaded with BPF token, this token should be used for feature probing. This patch is setting support for this scenario, but we don't yet pass non-zero token FD. This will be added in the next patch. We also switched BPF cookie detector from using kprobe program to tracepoint one, as tracepoint is somewhat less dangerous BPF program type and has higher likelihood of being allowed through BPF token in the future. This change has no effect on detection behavior. Signed-off-by: Andrii Nakryiko <andrii@kernel.org> Signed-off-by: Alexei Starovoitov <ast@kernel.org> Acked-by: John Fastabend <john.fastabend@gmail.com> Link: https://lore.kernel.org/bpf/20240124022127.2379740-25-andrii@kernel.org		2024-01-24 16:21:02 -08:00
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.gitignore	libbpf: Make libbpf_version.h non-auto-generated	2021-09-13 15:36:47 -07:00
bpf.c	libbpf: Wire up token_fd into feature probing logic	2024-01-24 16:21:02 -08:00
bpf.h	libbpf: Add BPF token support to bpf_prog_load() API	2024-01-24 16:21:02 -08:00
bpf_core_read.h	libbpf: Correct bpf_core_read.h comment wrt bpf_core_relo struct	2024-01-23 20:29:57 -08:00
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: add __arg_xxx macros for annotating global func args	2023-12-19 18:06:47 -08:00
bpf_prog_linfo.c	libbpf: Streamline error reporting for high-level APIs	2021-05-25 17:32:35 -07:00
bpf_tracing.h	libbpf: Fix syscall access arguments on riscv	2023-10-04 13:19:13 -07:00
btf.c	Revert BPF token-related functionality	2023-12-19 08:23:03 -08:00
btf.h	libbpf: Don't require full struct enum64 in UAPI headers	2022-09-27 20:45:17 +02:00
btf_dump.c	libbpf: btf_dump_type_data_check_overflow needs to consider BTF_MEMBER_BITFIELD_SIZE	2023-05-01 15:37:38 +02:00
Build	libbpf: Move feature detection code into its own file	2024-01-24 16:21:02 -08:00
elf.c	libbpf: Move feature detection code into its own file	2024-01-24 16:21:02 -08:00
features.c	libbpf: Wire up token_fd into feature probing logic	2024-01-24 16:21:02 -08:00
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.c	libbpf: Wire up token_fd into feature probing logic	2024-01-24 16:21:02 -08:00
libbpf.h	Revert BPF token-related functionality	2023-12-19 08:23:03 -08:00
libbpf.map	libbpf: Add bpf_token_create() API	2024-01-24 16:21:01 -08:00
libbpf.pc.template
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: Wire up token_fd into feature probing logic	2024-01-24 16:21:02 -08:00
libbpf_legacy.h	libbpf: Clean up deprecated and legacy aliases	2022-08-17 22:42:56 +02:00
libbpf_probes.c	libbpf: Wire up token_fd into feature probing logic	2024-01-24 16:21:02 -08:00
libbpf_version.h	libbpf: Start v1.4 development cycle	2023-11-23 22:49:41 +01:00
linker.c	libbpf: Skip DWARF sections in linker sanity check	2023-12-21 10:05:15 +01:00
Makefile	libbpf: fix typos in Makefile	2023-08-02 13:58:51 -07:00
netlink.c	xsk: add new netlink attribute dedicated for ZC max frags	2023-07-19 09:56:49 -07:00
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: Add ring__consume	2023-09-25 16:22:43 -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
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: Use local includes inside the library	2023-08-04 15:06:46 -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