bpf: btf: Add BPF_BTF_LOAD command

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This patch adds a BPF_BTF_LOAD command which
1) loads and verifies the BTF (implemented in earlier patches)
2) returns a BTF fd to userspace.  In the next patch, the
   BTF fd can be specified during BPF_MAP_CREATE.

It currently limits to CAP_SYS_ADMIN.

Signed-off-by: Martin KaFai Lau <kafai@fb.com>
Acked-by: Alexei Starovoitov <ast@fb.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>

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Martin KaFai Lau 2018-04-18 15:56:01 -07:00 • committed by Daniel Borkmann

parent b00b8daec8

commit f56a653c1f

4 changed files with 97 additions and 0 deletions

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4

include/linux/btf.h

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9

include/uapi/linux/bpf.h

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67

kernel/bpf/btf.c

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17

kernel/bpf/syscall.c

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