bpf: include sub program tags in bpf_prog_info

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Changes v2 -> v3:
1. remove check for bpf_dump_raw_ok().

Changes v1 -> v2:
1. Fix error path as Martin suggested.

This patch adds nr_prog_tags and prog_tags to bpf_prog_info. This is a
reliable way for user space to get tags of all sub programs. Before this
patch, user space need to find sub program tags via kallsyms.

This feature will be used in BPF introspection, where user space queries
information about BPF programs via sys_bpf.

Signed-off-by: Song Liu <songliubraving@fb.com>
Acked-by: Martin KaFai Lau <kafai@fb.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>

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Song Liu 2018-12-12 09:37:46 -08:00 • committed by Daniel Borkmann

parent 0ad379ffd6

commit c872bdb38f

2 changed files with 24 additions and 0 deletions

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include/uapi/linux/bpf.h

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