1 //===-- FileAction.cpp ----------------------------------------------------===// 2 // 3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 4 // See https://llvm.org/LICENSE.txt for license information. 5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 6 // 7 //===----------------------------------------------------------------------===// 8 9 #include <fcntl.h> 10 11 #include "lldb/Host/FileAction.h" 12 #include "lldb/Host/PosixApi.h" 13 #include "lldb/Utility/Stream.h" 14 15 using namespace lldb_private; 16 17 // FileAction member functions 18 19 FileAction::FileAction() : m_file_spec() {} 20 21 void FileAction::Clear() { 22 m_action = eFileActionNone; 23 m_fd = -1; 24 m_arg = -1; 25 m_file_spec.Clear(); 26 } 27 28 llvm::StringRef FileAction::GetPath() const { 29 return m_file_spec.GetPathAsConstString().AsCString(); 30 } 31 32 const FileSpec &FileAction::GetFileSpec() const { return m_file_spec; } 33 34 bool FileAction::Open(int fd, const FileSpec &file_spec, bool read, 35 bool write) { 36 if ((read || write) && fd >= 0 && file_spec) { 37 m_action = eFileActionOpen; 38 m_fd = fd; 39 if (read && write) 40 m_arg = O_NOCTTY | O_CREAT | O_RDWR; 41 else if (read) 42 m_arg = O_NOCTTY | O_RDONLY; 43 else 44 m_arg = O_NOCTTY | O_CREAT | O_WRONLY; 45 m_file_spec = file_spec; 46 return true; 47 } else { 48 Clear(); 49 } 50 return false; 51 } 52 53 bool FileAction::Close(int fd) { 54 Clear(); 55 if (fd >= 0) { 56 m_action = eFileActionClose; 57 m_fd = fd; 58 } 59 return m_fd >= 0; 60 } 61 62 bool FileAction::Duplicate(int fd, int dup_fd) { 63 Clear(); 64 if (fd >= 0 && dup_fd >= 0) { 65 m_action = eFileActionDuplicate; 66 m_fd = fd; 67 m_arg = dup_fd; 68 } 69 return m_fd >= 0; 70 } 71 72 void FileAction::Dump(Stream &stream) const { 73 stream.PutCString("file action: "); 74 switch (m_action) { 75 case eFileActionClose: 76 stream.Printf("close fd %d", m_fd); 77 break; 78 case eFileActionDuplicate: 79 stream.Printf("duplicate fd %d to %d", m_fd, m_arg); 80 break; 81 case eFileActionNone: 82 stream.PutCString("no action"); 83 break; 84 case eFileActionOpen: 85 stream.Printf("open fd %d with '%s', OFLAGS = 0x%x", m_fd, 86 m_file_spec.GetPath().c_str(), m_arg); 87 break; 88 } 89 } 90