bpftool: Print as a string for char array

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A char[] is currently printed as an integer array.
This patch will print it as a string when
1) The array element type is an one byte int
2) The array element type has a BTF_INT_CHAR encoding or
   the array element type's name is "char"
3) All characters is between (0x1f, 0x7f) and it is terminated
   by a null character.

Signed-off-by: Martin KaFai Lau <kafai@fb.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Andrii Nakryiko <andriin@fb.com>
Acked-by: Quentin Monnet <quentin@isovalent.com>
Link: https://lore.kernel.org/bpf/20200318171643.129021-1-kafai@fb.com

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Martin KaFai Lau 2020-03-18 10:16:43 -07:00 • committed by Daniel Borkmann

parent ca7e6e45d1

commit 30255d3175

1 changed files with 41 additions and 0 deletions

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tools/bpf/bpftool/btf_dumper.c

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