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Commit b1cd609d authored by Andrey Ignatov's avatar Andrey Ignatov Committed by Alexei Starovoitov
Browse files

bpf: Add base proto function for cgroup-bpf programs 



Currently kernel/bpf/cgroup.c contains only one program type and one
proto function cgroup_dev_func_proto(). It'd be useful to have base
proto function that can be reused for new cgroup-bpf program types
coming soon.

Introduce cgroup_base_func_proto().

Signed-off-by: default avatarAndrey Ignatov <rdna@fb.com>
Signed-off-by: default avatarAlexei Starovoitov <ast@kernel.org>
parent e0a092eb

kernel/bpf/cgroup.c

+7 −1
Original line number Diff line number Diff line
@@ -701,7 +701,7 @@ int __cgroup_bpf_check_dev_permission(short dev_type, u32 major, u32 minor, 
EXPORT_SYMBOL(__cgroup_bpf_check_dev_permission);



static const struct bpf_func_proto *

cgroup_dev_func_proto(enum bpf_func_id func_id, const struct bpf_prog *prog)

cgroup_base_func_proto(enum bpf_func_id func_id, const struct bpf_prog *prog)

{

	switch (func_id) {

	case BPF_FUNC_map_lookup_elem:
@@ -725,6 +725,12 @@ cgroup_dev_func_proto(enum bpf_func_id func_id, const struct bpf_prog *prog) 
	}

}



static const struct bpf_func_proto *

cgroup_dev_func_proto(enum bpf_func_id func_id, const struct bpf_prog *prog)

{

	return cgroup_base_func_proto(func_id, prog);

}



static bool cgroup_dev_is_valid_access(int off, int size,

				       enum bpf_access_type type,

				       const struct bpf_prog *prog,