1# Copyright (C) 2024 The Android Open Source Project 2# 3# Licensed under the Apache License, Version 2.0 (the "License"); 4# you may not use this file except in compliance with the License. 5# You may obtain a copy of the License at 6# 7# http://www.apache.org/licenses/LICENSE-2.0 8# 9# Unless required by applicable law or agreed to in writing, software 10# distributed under the License is distributed on an "AS IS" BASIS, 11# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 12# See the License for the specific language governing permissions and 13# limitations under the License. 14 15load("@gbl//toolchain:gbl_toolchain.bzl", "link_static_cc_library") 16load("@gbl_llvm_prebuilts//:info.bzl", "LLVM_PREBUILTS_C_INCLUDE") 17load("@rules_cc//cc:defs.bzl", "cc_library") 18load("@rules_rust//bindgen:defs.bzl", "rust_bindgen") 19load("@rules_rust//rust:defs.bzl", "rust_library") 20 21package( 22 default_visibility = ["//visibility:public"], 23) 24 25exports_files(glob(["**/*"])) 26 27# Newer version of `rust_bindgen` requires a `cc_library` target that actually produces a static 28# library and instead of only headers. Thus we generate a placeholder source file to meet the 29# requirement. 30genrule( 31 name = "bindgen_noop_cc", 32 outs = ["bindgen_noop_cc.cc"], 33 cmd = "touch $(OUTS)", 34) 35 36cc_library( 37 name = "headers", 38 srcs = [":bindgen_noop_cc"], 39 hdrs = [ 40 "libavb/avb_chain_partition_descriptor.h", 41 "libavb/avb_cmdline.h", 42 "libavb/avb_crypto.h", 43 "libavb/avb_descriptor.h", 44 "libavb/avb_footer.h", 45 "libavb/avb_hash_descriptor.h", 46 "libavb/avb_hashtree_descriptor.h", 47 "libavb/avb_kernel_cmdline_descriptor.h", 48 "libavb/avb_ops.h", 49 "libavb/avb_property_descriptor.h", 50 "libavb/avb_rsa.h", 51 "libavb/avb_sha.h", 52 "libavb/avb_slot_verify.h", 53 "libavb/avb_sysdeps.h", 54 "libavb/avb_util.h", 55 "libavb/avb_vbmeta_image.h", 56 "libavb/avb_version.h", 57 "libavb/libavb.h", 58 "libavb/sha/avb_crypto_ops_impl.h", 59 "libavb_cert/avb_cert_ops.h", 60 "libavb_cert/avb_cert_types.h", 61 "libavb_cert/avb_cert_validate.h", 62 "libavb_cert/libavb_cert.h", 63 ], 64 includes = [ 65 ".", 66 "libavb/sha/", 67 ], 68 deps = ["@gbl//libc:headers"], 69) 70 71cc_library( 72 name = "libavb_c", 73 srcs = [ 74 "libavb/avb_chain_partition_descriptor.c", 75 "libavb/avb_cmdline.c", 76 "libavb/avb_crc32.c", 77 "libavb/avb_crypto.c", 78 "libavb/avb_descriptor.c", 79 "libavb/avb_footer.c", 80 "libavb/avb_hash_descriptor.c", 81 "libavb/avb_hashtree_descriptor.c", 82 "libavb/avb_kernel_cmdline_descriptor.c", 83 "libavb/avb_property_descriptor.c", 84 "libavb/avb_rsa.c", 85 "libavb/avb_slot_verify.c", 86 "libavb/avb_util.c", 87 "libavb/avb_vbmeta_image.c", 88 "libavb/avb_version.c", 89 "libavb_cert/avb_cert_validate.c", 90 # C implementations for sysdeps which cannot be implemented using Rust 91 "@gbl//libavb:deps.c", 92 ], 93 copts = [ 94 "-D_FILE_OFFSET_BITS=64", 95 "-D_POSIX_C_SOURCE=199309L", 96 "-Wa,--noexecstack", 97 "-Werror", 98 "-Wall", 99 "-Wextra", 100 "-Wformat=2", 101 "-Wmissing-prototypes", 102 "-Wno-unused-parameter", 103 "-ffunction-sections", 104 "-g", 105 "-DAVB_USE_PRINTF_LOGS", 106 "-DAVB_COMPILATION", 107 # libavb uses more than 4K of stack space. This prevents the compiler from inserting 108 # _chkstk(). 109 "-mstack-probe-size=8192", 110 ], 111 deps = [ 112 ":headers", 113 ], 114) 115 116link_static_cc_library( 117 name = "libavb_c_staticlib", 118 cc_library = ":libavb_c", 119) 120 121cc_library( 122 name = "avb_crypto_ops_sha_impl", 123 srcs = [ 124 "libavb/sha/sha256_impl.c", 125 "libavb/sha/sha512_impl.c", 126 ], 127 copts = ["-DAVB_COMPILATION"], 128 deps = [ 129 ":headers", 130 ], 131) 132 133link_static_cc_library( 134 name = "avb_crypto_ops_sha_impl_staticlib", 135 cc_library = ":avb_crypto_ops_sha_impl", 136) 137 138rust_bindgen( 139 name = "libavb_c_bindgen", 140 # Flags should match Soong definition in external/avb/rust/Android.bp. 141 bindgen_flags = [ 142 "--constified-enum-module=AvbDescriptorTag", 143 "--bitfield-enum=Avb.*Flags", 144 "--default-enum-style=rust", 145 "--with-derive-default", 146 "--with-derive-custom=Avb.*Descriptor=FromBytes,Immutable,KnownLayout", 147 "--with-derive-custom=AvbCertPermanentAttributes=FromBytes,IntoBytes", 148 "--with-derive-custom=AvbCertCertificate.*=FromBytes,IntoBytes", 149 "--with-derive-custom=AvbCertUnlock.*=FromBytes,IntoBytes", 150 "--allowlist-type=AvbDescriptorTag", 151 "--allowlist-type=Avb.*Flags", 152 "--allowlist-function=.*", 153 "--allowlist-var=AVB.*", 154 "--use-core", 155 "--raw-line=#![no_std]", 156 "--raw-line=use zerocopy::{Immutable, IntoBytes, FromBytes, KnownLayout};", 157 "--ctypes-prefix=core::ffi", 158 ], 159 cc_lib = "headers", 160 # For x86_32, we need to explicitly specify 32bit architecture. 161 clang_flags = select({ 162 "@gbl//toolchain:gbl_rust_uefi_x86_32": ["-m32"], 163 "//conditions:default": ["-m64"], 164 }) + [ 165 "-I{}".format(LLVM_PREBUILTS_C_INCLUDE), 166 "-nostdinc", 167 ], 168 header = "libavb_cert/libavb_cert.h", 169) 170 171rust_library( 172 name = "avb_bindgen", 173 srcs = [":libavb_c_bindgen"], 174 rustc_flags = [ 175 "--allow=non_snake_case", 176 "--allow=non_camel_case_types", 177 ], 178 deps = ["@zerocopy"], 179) 180 181rust_library( 182 name = "avb", 183 srcs = glob(["rust/src/**/*.rs"]), 184 crate_features = ["uuid"], 185 edition = "2021", 186 deps = [ 187 ":avb_bindgen", 188 ":libavb_c_staticlib", 189 "@uuid", 190 "@zerocopy", 191 ], 192) 193 194rust_library( 195 name = "avb_test", 196 srcs = ["rust/tests/test_ops.rs"], 197 crate_features = ["uuid"], 198 edition = "2021", 199 deps = [ 200 ":avb", 201 "@uuid", 202 ], 203) 204