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author | Martin KaFai Lau <kafai@fb.com> | 2017-09-27 14:37:52 -0700 |
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committer | David S. Miller <davem@davemloft.net> | 2017-09-29 06:17:05 +0100 |
commit | cb4d2b3f03d8eed90be3a194e5b54b734ec4bbe9 (patch) | |
tree | 6560fa3e40c2e1f14a2ac9f9223be63f911f3c6e /samples/bpf | |
parent | cf5d74b85ef40c202c76d90959db4d850f301b95 (diff) | |
download | op-kernel-dev-cb4d2b3f03d8eed90be3a194e5b54b734ec4bbe9.zip op-kernel-dev-cb4d2b3f03d8eed90be3a194e5b54b734ec4bbe9.tar.gz |
bpf: Add name, load_time, uid and map_ids to bpf_prog_info
The patch adds name and load_time to struct bpf_prog_aux. They
are also exported to bpf_prog_info.
The bpf_prog's name is passed by userspace during BPF_PROG_LOAD.
The kernel only stores the first (BPF_PROG_NAME_LEN - 1) bytes
and the name stored in the kernel is always \0 terminated.
The kernel will reject name that contains characters other than
isalnum() and '_'. It will also reject name that is not null
terminated.
The existing 'user->uid' of the bpf_prog_aux is also exported to
the bpf_prog_info as created_by_uid.
The existing 'used_maps' of the bpf_prog_aux is exported to
the newly added members 'nr_map_ids' and 'map_ids' of
the bpf_prog_info. On the input, nr_map_ids tells how
big the userspace's map_ids buffer is. On the output,
nr_map_ids tells the exact user_map_cnt and it will only
copy up to the userspace's map_ids buffer is allowed.
Signed-off-by: Martin KaFai Lau <kafai@fb.com>
Acked-by: Alexei Starovoitov <ast@fb.com>
Acked-by: Daniel Borkmann <daniel@iogearbox.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'samples/bpf')
0 files changed, 0 insertions, 0 deletions