1 /* 2 * Copyright 2018 Google Inc. 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 #include "sys.hpp" 18 19 #include <fcntl.h> 20 #include <sys/ioctl.h> 21 #include <sys/mman.h> 22 #include <sys/stat.h> 23 #include <sys/types.h> 24 #include <unistd.h> 25 26 #include <cstdint> 27 28 namespace internal 29 { 30 31 std::int64_t SysImpl::getSize(const char* pathname) const 32 { 33 struct stat results; 34 int rc = ::stat(pathname, &results); 35 if (rc) 36 { 37 return 0; 38 } 39 40 return static_cast<std::int64_t>(results.st_size); 41 } 42 43 int SysImpl::open(const char* pathname, int flags) const 44 { 45 return ::open(pathname, flags); 46 } 47 48 int SysImpl::read(int fd, void* buf, std::size_t count) const 49 { 50 return static_cast<int>(::read(fd, buf, count)); 51 } 52 53 int SysImpl::pread(int fd, void* buf, std::size_t count, off_t offset) const 54 { 55 return static_cast<int>(::pread(fd, buf, count, offset)); 56 } 57 58 int SysImpl::pwrite(int fd, const void* buf, std::size_t count, 59 off_t offset) const 60 { 61 return static_cast<int>(::pwrite(fd, buf, count, offset)); 62 } 63 64 int SysImpl::close(int fd) const 65 { 66 return ::close(fd); 67 } 68 69 void* SysImpl::mmap(void* addr, std::size_t length, int prot, int flags, int fd, 70 off_t offset) const 71 { 72 return ::mmap(addr, length, prot, flags, fd, offset); 73 } 74 75 int SysImpl::munmap(void* addr, std::size_t length) const 76 { 77 return ::munmap(addr, length); 78 } 79 80 int SysImpl::getpagesize() const 81 { 82 return ::getpagesize(); 83 } 84 85 int SysImpl::ioctl(int fd, unsigned long request, void* param) const 86 { 87 return ::ioctl(fd, request, param); 88 } 89 90 int SysImpl::poll(struct pollfd* fds, nfds_t nfds, int timeout) const 91 { 92 return ::poll(fds, nfds, timeout); 93 } 94 95 SysImpl sys_impl; 96 97 } // namespace internal 98