| //===----------------------------------------------------------------------===// |
| // |
| // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
| // See https://llvm.org/LICENSE.txt for license information. |
| // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
| // |
| //===----------------------------------------------------------------------===// |
| /// |
| /// \file |
| /// Implementation of the POSIX secure_getenv function. |
| /// |
| //===----------------------------------------------------------------------===// |
| |
| #include "src/stdlib/secure_getenv.h" |
| #include "hdr/sys_auxv_macros.h" |
| #include "src/__support/OSUtil/linux/auxv.h" |
| #include "src/__support/common.h" |
| #include "src/__support/macros/config.h" |
| #include "src/stdlib/environ_internal.h" |
| |
| namespace LIBC_NAMESPACE_DECL { |
| |
| LLVM_LIBC_FUNCTION(char *, secure_getenv, (const char *name)) { |
| if (name == nullptr || name[0] == '\0') |
| return nullptr; |
| |
| // Fail closed if AT_SECURE is non-zero or missing from auxv. |
| if (auxv::get(AT_SECURE).value_or(1) != 0) |
| return nullptr; |
| |
| return internal::EnvironmentManager::get_instance().get(name); |
| } |
| |
| } // namespace LIBC_NAMESPACE_DECL |
