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
15using namespace lldb_private;
16
17// FileAction member functions
18
19FileAction::FileAction() : m_file_spec() {}
20
21void FileAction::Clear() {
22  m_action = eFileActionNone;
23  m_fd = -1;
24  m_arg = -1;
25  m_file_spec.Clear();
26}
27
28llvm::StringRef FileAction::GetPath() const {
29  return m_file_spec.GetPathAsConstString().AsCString();
30}
31
32const FileSpec &FileAction::GetFileSpec() const { return m_file_spec; }
33
34bool 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
53bool 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
62bool 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
72void 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