bpftool: Support bpffs mountpoint as pin path for prog loadall

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Currently, when using prog loadall and the pin path is a bpffs mountpoint,
bpffs will be repeatedly mounted to the parent directory of the bpffs
mountpoint path. For example, a `bpftool prog loadall test.o /sys/fs/bpf`
will trigger this.

Signed-off-by: Pengcheng Yang <yangpc@wangsu.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Reviewed-by: Quentin Monnet <quentin@isovalent.com>
Link: https://lore.kernel.org/bpf/1683342439-3677-1-git-send-email-yangpc@wangsu.com

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Pengcheng Yang 2023-05-06 11:07:19 +08:00 • committed by Daniel Borkmann

parent f04a32b2c5

commit 2a36c26fe3

5 changed files with 10 additions and 7 deletions

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9

tools/bpf/bpftool/common.c

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2

tools/bpf/bpftool/iter.c

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2

tools/bpf/bpftool/main.h

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2

tools/bpf/bpftool/prog.c

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2

tools/bpf/bpftool/struct_ops.c

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