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libbpf: Move feature detection code into its own file

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It's quite a lot of well isolated code, so it seems like a good
candidate to move it out of libbpf.c to reduce its size.

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/20240124022127.2379740-24-andrii@kernel.org
This commit is contained in:
Andrii Nakryiko
2024-01-23 18:21:20 -08:00
committed by Andrii Nakryiko
parent 9bf95048b7
commit d42f0b8943
5 changed files with 480 additions and 465 deletions
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14
src/libbpf_internal.h
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@@ -361,10 +361,20 @@ enum kern_feature_id {
__FEAT_CNT,
};
struct kern_feature_cache;
enum kern_feature_result {
FEAT_UNKNOWN = 0,
FEAT_SUPPORTED = 1,
FEAT_MISSING = 2,
};
struct kern_feature_cache {
enum kern_feature_result res[__FEAT_CNT];
};
bool feat_supported(struct kern_feature_cache *cache, enum kern_feature_id feat_id);
bool kernel_supports(const struct bpf_object *obj, enum kern_feature_id feat_id);
int probe_kern_syscall_wrapper(void);
int probe_memcg_account(void);
int bump_rlimit_memlock(void);
@@ -626,4 +636,6 @@ int elf_resolve_syms_offsets(const char *binary_path, int cnt,
int elf_resolve_pattern_offsets(const char *binary_path, const char *pattern,
unsigned long **poffsets, size_t *pcnt);
int probe_fd(int fd);
#endif /* __LIBBPF_LIBBPF_INTERNAL_H */