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linux/tools/lib/bpf
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Andrii Nakryiko 5b3d729877 libbpf: Improve LINUX_VERSION_CODE detection 
Ubuntu reports incorrect kernel version through uname(), which on older
kernels leads to kprobe BPF programs failing to load due to the version
check mismatch.

Accommodate Ubuntu's quirks with LINUX_VERSION_CODE by using
Ubuntu-specific /proc/version_code to fetch major/minor/patch versions
to form LINUX_VERSION_CODE.

While at it, consolide libbpf's kernel version detection code between
libbpf.c and libbpf_probes.c.

  [0] Closes: https://github.com/libbpf/libbpf/issues/421

Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Acked-by: Yonghong Song <yhs@fb.com>
Link: https://lore.kernel.org/bpf/20211222231003.2334940-1-andrii@kernel.org
2021-12-28 19:20:31 -08:00
..
.gitignore libbpf: Make libbpf_version.h non-auto-generated 2021-09-13 15:36:47 -07:00
bpf_core_read.h libbpf: Fix endianness detection in BPF_CORE_READ_BITFIELD_PROBED() 2021-10-25 20:39:41 -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 Merge https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next 2021-12-10 15:56:13 -08:00
bpf_helpers.h libbpf: Use static const fmt string in __bpf_printk 2021-09-17 14:02:05 -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: Use 100-character limit to make bpf_tracing.h easier to read 2021-12-28 19:14:45 -08:00
bpf.c libbpf: Auto-bump RLIMIT_MEMLOCK if kernel needs it for BPF 2021-12-14 22:16:45 +01:00
bpf.h libbpf: Auto-bump RLIMIT_MEMLOCK if kernel needs it for BPF 2021-12-14 22:16:45 +01:00
btf_dump.c libbpf: Add sane strncpy alternative and use it internally 2021-12-14 15:47:56 +01:00
btf.c libbpf: Fix typo in btf__dedup@LIBBPF_0.0.2 definition 2021-12-10 15:35:29 -08:00
btf.h libbpf: Do not use btf_dump__new() macro in C++ mode 2021-12-23 10:23:16 -08:00
Build libbpf: Split CO-RE logic into relo_core.c. 2021-07-26 12:29:14 -07:00
gen_loader.c libbpf: Add sane strncpy alternative and use it internally 2021-12-14 15:47:56 +01:00
hashmap.c libbpf: Centralize poisoning and poison reallocarray() 2020-08-18 18:38:25 -07:00
hashmap.h libbpf, hashmap: Fix undefined behavior in hash_bits 2020-11-02 23:33:51 +01:00
libbpf_common.h libbpf: Deprecate bpf_prog_load_xattr() API 2021-12-02 15:23:41 -08:00
libbpf_errno.c libbpf: Streamline error reporting for high-level APIs 2021-05-25 17:32:35 -07:00
libbpf_internal.h libbpf: Improve LINUX_VERSION_CODE detection 2021-12-28 19:20:31 -08:00
libbpf_legacy.h libbpf: Auto-bump RLIMIT_MEMLOCK if kernel needs it for BPF 2021-12-14 22:16:45 +01:00
libbpf_probes.c libbpf: Improve LINUX_VERSION_CODE detection 2021-12-28 19:20:31 -08:00
libbpf_version.h libbpf: Add API to get/set log_level at per-program level 2021-12-02 15:23:40 -08:00
libbpf.c libbpf: Improve LINUX_VERSION_CODE detection 2021-12-28 19:20:31 -08:00
libbpf.h libbpf: Rework feature-probing APIs 2021-12-17 23:10:48 +01:00
libbpf.map libbpf: Rework feature-probing APIs 2021-12-17 23:10:48 +01:00
libbpf.pc.template libbpf: Add zlib as a dependency in pkg-config template 2019-12-16 14:55:29 -08:00
linker.c libbpf: Fix using invalidated memory in bpf_linker 2021-11-26 00:15:03 +01:00
Makefile tools/libbpf: Enable cross-building with clang 2021-12-16 12:15:05 -08:00
netlink.c libbpf: Switch to void * casting in netlink helpers 2021-06-22 17:04:02 +02:00
nlattr.c libbpf: Switch to void * casting in netlink helpers 2021-06-22 17:04:02 +02:00
nlattr.h libbpf: Switch to void * casting in netlink helpers 2021-06-22 17:04:02 +02:00
relo_core.c libbpf: Fix potential uninit memory read 2021-12-14 15:37:58 +01:00
relo_core.h libbpf: Reduce bpf_core_apply_relo_insn() stack usage. 2021-12-03 13:21:59 -08:00
ringbuf.c libbpf: Streamline error reporting for high-level APIs 2021-05-25 17:32:35 -07:00
skel_internal.h bpf, mips: Fix build errors about __NR_bpf undeclared 2021-11-26 22:11:25 +01:00
str_error.c libbpf: Poison kernel-only integer types 2020-01-10 10:38:00 -08:00
str_error.h libbpf: relicense libbpf as LGPL-2.1 OR BSD-2-Clause 2018-10-08 10:09:48 +02:00
strset.c libbpf: Fix memory leak in strset 2021-10-01 22:54:38 +02:00
strset.h libbpf: Extract internal set-of-strings datastructure APIs 2021-03-18 16:14:22 -07:00
xsk.c libbpf: Add sane strncpy alternative and use it internally 2021-12-14 15:47:56 +01:00
xsk.h libbpf: Deprecate AF_XDP support 2021-11-01 18:12:44 -07:00