1//===-- FileAction.cpp ------------------------------------------*- C++ -*-===// 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 15using namespace lldb_private; 16 17// FileAction member functions 18 19FileAction::FileAction() 20 : m_action(eFileActionNone), m_fd(-1), m_arg(-1), m_file_spec() {} 21 22void FileAction::Clear() { 23 m_action = eFileActionNone; 24 m_fd = -1; 25 m_arg = -1; 26 m_file_spec.Clear(); 27} 28 29llvm::StringRef FileAction::GetPath() const { return m_file_spec.GetCString(); } 30 31const FileSpec &FileAction::GetFileSpec() const { return m_file_spec; } 32 33bool FileAction::Open(int fd, const FileSpec &file_spec, bool read, 34 bool write) { 35 if ((read || write) && fd >= 0 && file_spec) { 36 m_action = eFileActionOpen; 37 m_fd = fd; 38 if (read && write) 39 m_arg = O_NOCTTY | O_CREAT | O_RDWR; 40 else if (read) 41 m_arg = O_NOCTTY | O_RDONLY; 42 else 43 m_arg = O_NOCTTY | O_CREAT | O_WRONLY; 44 m_file_spec = file_spec; 45 return true; 46 } else { 47 Clear(); 48 } 49 return false; 50} 51 52bool FileAction::Close(int fd) { 53 Clear(); 54 if (fd >= 0) { 55 m_action = eFileActionClose; 56 m_fd = fd; 57 } 58 return m_fd >= 0; 59} 60 61bool FileAction::Duplicate(int fd, int dup_fd) { 62 Clear(); 63 if (fd >= 0 && dup_fd >= 0) { 64 m_action = eFileActionDuplicate; 65 m_fd = fd; 66 m_arg = dup_fd; 67 } 68 return m_fd >= 0; 69} 70 71void FileAction::Dump(Stream &stream) const { 72 stream.PutCString("file action: "); 73 switch (m_action) { 74 case eFileActionClose: 75 stream.Printf("close fd %d", m_fd); 76 break; 77 case eFileActionDuplicate: 78 stream.Printf("duplicate fd %d to %d", m_fd, m_arg); 79 break; 80 case eFileActionNone: 81 stream.PutCString("no action"); 82 break; 83 case eFileActionOpen: 84 stream.Printf("open fd %d with '%s', OFLAGS = 0x%x", m_fd, 85 m_file_spec.GetCString(), m_arg); 86 break; 87 } 88} 89