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Tue, 07 Apr 2026 13:02:27 -0700 (PDT) From: Justin Suess To: ast@kernel.org, daniel@iogearbox.net, andrii@kernel.org, kpsingh@kernel.org, paul@paul-moore.com, mic@digikod.net, viro@zeniv.linux.org.uk, brauner@kernel.org, kees@kernel.org Cc: gnoack@google.com, jack@suse.cz, jmorris@namei.org, serge@hallyn.com, song@kernel.org, yonghong.song@linux.dev, martin.lau@linux.dev, m@maowtm.org, eddyz87@gmail.com, john.fastabend@gmail.com, sdf@fomichev.me, skhan@linuxfoundation.org, bpf@vger.kernel.org, linux-security-module@vger.kernel.org, linux-kernel@vger.kernel.org, linux-fsdevel@vger.kernel.org, Justin Suess Subject: [RFC PATCH 08/20] bpf: Add Landlock ruleset map type Date: Tue, 7 Apr 2026 16:01:30 -0400 Message-ID: <20260407200157.3874806-9-utilityemal77@gmail.com> X-Mailer: git-send-email 2.53.0 In-Reply-To: <20260407200157.3874806-1-utilityemal77@gmail.com> References: <20260407200157.3874806-1-utilityemal77@gmail.com> Precedence: bulk X-Mailing-List: linux-security-module@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Expose the new BPF_MAP_TYPE_LANDLOCK_RULESET via headers, allowing programs to utilize the map. Signed-off-by: Justin Suess --- include/linux/bpf_types.h | 1 + include/uapi/linux/bpf.h | 1 + tools/include/uapi/linux/bpf.h | 1 + tools/lib/bpf/libbpf.c | 1 + tools/lib/bpf/libbpf_probes.c | 6 ++++++ 5 files changed, 10 insertions(+) diff --git a/include/linux/bpf_types.h b/include/linux/bpf_types.h index b13de31e163f..0fa3b9031d90 100644 --- a/include/linux/bpf_types.h +++ b/include/linux/bpf_types.h @@ -134,6 +134,7 @@ BPF_MAP_TYPE(BPF_MAP_TYPE_BLOOM_FILTER, bloom_filter_map_ops) BPF_MAP_TYPE(BPF_MAP_TYPE_USER_RINGBUF, user_ringbuf_map_ops) BPF_MAP_TYPE(BPF_MAP_TYPE_ARENA, arena_map_ops) BPF_MAP_TYPE(BPF_MAP_TYPE_INSN_ARRAY, insn_array_map_ops) +BPF_MAP_TYPE(BPF_MAP_TYPE_LANDLOCK_RULESET, landlock_ruleset_map_ops) BPF_LINK_TYPE(BPF_LINK_TYPE_RAW_TRACEPOINT, raw_tracepoint) BPF_LINK_TYPE(BPF_LINK_TYPE_TRACING, tracing) diff --git a/include/uapi/linux/bpf.h b/include/uapi/linux/bpf.h index c8d400b7680a..7e4478afa162 100644 --- a/include/uapi/linux/bpf.h +++ b/include/uapi/linux/bpf.h @@ -1046,6 +1046,7 @@ enum bpf_map_type { BPF_MAP_TYPE_CGRP_STORAGE, BPF_MAP_TYPE_ARENA, BPF_MAP_TYPE_INSN_ARRAY, + BPF_MAP_TYPE_LANDLOCK_RULESET, __MAX_BPF_MAP_TYPE }; diff --git a/tools/include/uapi/linux/bpf.h b/tools/include/uapi/linux/bpf.h index 5e38b4887de6..6dd7d70b198a 100644 --- a/tools/include/uapi/linux/bpf.h +++ b/tools/include/uapi/linux/bpf.h @@ -1046,6 +1046,7 @@ enum bpf_map_type { BPF_MAP_TYPE_CGRP_STORAGE, BPF_MAP_TYPE_ARENA, BPF_MAP_TYPE_INSN_ARRAY, + BPF_MAP_TYPE_LANDLOCK_RULESET, __MAX_BPF_MAP_TYPE }; diff --git a/tools/lib/bpf/libbpf.c b/tools/lib/bpf/libbpf.c index 0be7017800fe..9ccd5df1ea6c 100644 --- a/tools/lib/bpf/libbpf.c +++ b/tools/lib/bpf/libbpf.c @@ -192,6 +192,7 @@ static const char * const map_type_name[] = { [BPF_MAP_TYPE_CGRP_STORAGE] = "cgrp_storage", [BPF_MAP_TYPE_ARENA] = "arena", [BPF_MAP_TYPE_INSN_ARRAY] = "insn_array", + [BPF_MAP_TYPE_LANDLOCK_RULESET] = "landlock_ruleset", }; static const char * const prog_type_name[] = { diff --git a/tools/lib/bpf/libbpf_probes.c b/tools/lib/bpf/libbpf_probes.c index bccf4bb747e1..1407d54aef67 100644 --- a/tools/lib/bpf/libbpf_probes.c +++ b/tools/lib/bpf/libbpf_probes.c @@ -367,6 +367,12 @@ static int probe_map_create(enum bpf_map_type map_type) case BPF_MAP_TYPE_INSN_ARRAY: key_size = sizeof(__u32); value_size = sizeof(struct bpf_insn_array_value); + max_entries = 1; + break; + case BPF_MAP_TYPE_LANDLOCK_RULESET: + key_size = sizeof(__u32); + value_size = sizeof(__u32); + max_entries = 1; break; case BPF_MAP_TYPE_UNSPEC: default: -- 2.53.0