1*71db0c75SAndroid Build Coastguard Worker //===-- Implementation of strlcat -----------------------------------------===// 2*71db0c75SAndroid Build Coastguard Worker // 3*71db0c75SAndroid Build Coastguard Worker // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 4*71db0c75SAndroid Build Coastguard Worker // See https://llvm.org/LICENSE.txt for license information. 5*71db0c75SAndroid Build Coastguard Worker // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 6*71db0c75SAndroid Build Coastguard Worker // 7*71db0c75SAndroid Build Coastguard Worker //===----------------------------------------------------------------------===// 8*71db0c75SAndroid Build Coastguard Worker 9*71db0c75SAndroid Build Coastguard Worker #include "src/string/strlcat.h" 10*71db0c75SAndroid Build Coastguard Worker #include "src/__support/macros/config.h" 11*71db0c75SAndroid Build Coastguard Worker #include "src/string/string_utils.h" 12*71db0c75SAndroid Build Coastguard Worker 13*71db0c75SAndroid Build Coastguard Worker #include "src/__support/common.h" 14*71db0c75SAndroid Build Coastguard Worker 15*71db0c75SAndroid Build Coastguard Worker namespace LIBC_NAMESPACE_DECL { 16*71db0c75SAndroid Build Coastguard Worker 17*71db0c75SAndroid Build Coastguard Worker LLVM_LIBC_FUNCTION(size_t, strlcat, 18*71db0c75SAndroid Build Coastguard Worker (char *__restrict dst, const char *__restrict src, 19*71db0c75SAndroid Build Coastguard Worker size_t size)) { 20*71db0c75SAndroid Build Coastguard Worker char *new_dst = reinterpret_cast<char *>(internal::find_first_character( 21*71db0c75SAndroid Build Coastguard Worker reinterpret_cast<unsigned char *>(dst), 0, size)); 22*71db0c75SAndroid Build Coastguard Worker if (!new_dst) 23*71db0c75SAndroid Build Coastguard Worker return size + internal::string_length(src); 24*71db0c75SAndroid Build Coastguard Worker size_t first_len = new_dst - dst; 25*71db0c75SAndroid Build Coastguard Worker return first_len + internal::strlcpy(new_dst, src, size - first_len); 26*71db0c75SAndroid Build Coastguard Worker } 27*71db0c75SAndroid Build Coastguard Worker 28*71db0c75SAndroid Build Coastguard Worker } // namespace LIBC_NAMESPACE_DECL 29