diff options
| author | Anton Protopopov <aspsk@isovalent.com> | 2023-07-19 12:29:50 +0300 |
|---|---|---|
| committer | Alexei Starovoitov <ast@kernel.org> | 2023-07-19 19:48:52 +0300 |
| commit | 5ba190c29cf92f157bd63c9909c7050d6dc43df7 (patch) | |
| tree | 486ef54af06582d7b78ab480a9ca0f7826915f32 /include/linux | |
| parent | 831deb2976de4458adae4daee56aa6f740ed4acc (diff) | |
| download | linux-5ba190c29cf92f157bd63c9909c7050d6dc43df7.tar.xz | |
bpf: consider CONST_PTR_TO_MAP as trusted pointer to struct bpf_map
Add the BTF id of struct bpf_map to the reg2btf_ids array. This makes the
values of the CONST_PTR_TO_MAP type to be considered as trusted by kfuncs.
This, in turn, allows users to execute trusted kfuncs which accept `struct
bpf_map *` arguments from non-tracing programs.
While exporting the btf_bpf_map_id variable, save some bytes by defining
it as BTF_ID_LIST_GLOBAL_SINGLE (which is u32[1]) and not as BTF_ID_LIST
(which is u32[64]).
Signed-off-by: Anton Protopopov <aspsk@isovalent.com>
Link: https://lore.kernel.org/r/20230719092952.41202-3-aspsk@isovalent.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Diffstat (limited to 'include/linux')
| -rw-r--r-- | include/linux/btf_ids.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/include/linux/btf_ids.h b/include/linux/btf_ids.h index 00950cc03bff..a3462a9b8e18 100644 --- a/include/linux/btf_ids.h +++ b/include/linux/btf_ids.h @@ -267,5 +267,6 @@ MAX_BTF_TRACING_TYPE, extern u32 btf_tracing_ids[]; extern u32 bpf_cgroup_btf_id[]; extern u32 bpf_local_storage_map_btf_id[]; +extern u32 btf_bpf_map_id[]; #endif |