| // Copyright 2019 The Crashpad Authors. All rights reserved. |
| // |
| // Licensed under the Apache License, Version 2.0 (the "License"); |
| // you may not use this file except in compliance with the License. |
| // You may obtain a copy of the License at |
| // |
| // http://www.apache.org/licenses/LICENSE-2.0 |
| // |
| // Unless required by applicable law or agreed to in writing, software |
| // distributed under the License is distributed on an "AS IS" BASIS, |
| // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| // See the License for the specific language governing permissions and |
| // limitations under the License. |
| |
| #include <sys/mman.h> |
| |
| #include <dlfcn.h> |
| #include <sys/syscall.h> |
| #include <unistd.h> |
| |
| #if defined(__GLIBC__) |
| |
| extern "C" { |
| |
| int memfd_create(const char* name, unsigned int flags) { |
| using MemfdCreateType = int (*)(const char*, int); |
| static const MemfdCreateType next_memfd_create = |
| reinterpret_cast<MemfdCreateType>(dlsym(RTLD_NEXT, "memfd_create")); |
| return next_memfd_create ? next_memfd_create(name, flags) |
| : syscall(SYS_memfd_create, name, flags); |
| } |
| |
| } // extern "C" |
| |
| #endif // __GLIBC__ |
