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
FileAction()19 FileAction::FileAction() : m_file_spec() {}
20
Clear()21 void FileAction::Clear() {
22 m_action = eFileActionNone;
23 m_fd = -1;
24 m_arg = -1;
25 m_file_spec.Clear();
26 }
27
GetPath() const28 llvm::StringRef FileAction::GetPath() const { return m_file_spec.GetCString(); }
29
GetFileSpec() const30 const FileSpec &FileAction::GetFileSpec() const { return m_file_spec; }
31
Open(int fd,const FileSpec & file_spec,bool read,bool write)32 bool FileAction::Open(int fd, const FileSpec &file_spec, bool read,
33 bool write) {
34 if ((read || write) && fd >= 0 && file_spec) {
35 m_action = eFileActionOpen;
36 m_fd = fd;
37 if (read && write)
38 m_arg = O_NOCTTY | O_CREAT | O_RDWR;
39 else if (read)
40 m_arg = O_NOCTTY | O_RDONLY;
41 else
42 m_arg = O_NOCTTY | O_CREAT | O_WRONLY;
43 m_file_spec = file_spec;
44 return true;
45 } else {
46 Clear();
47 }
48 return false;
49 }
50
Close(int fd)51 bool FileAction::Close(int fd) {
52 Clear();
53 if (fd >= 0) {
54 m_action = eFileActionClose;
55 m_fd = fd;
56 }
57 return m_fd >= 0;
58 }
59
Duplicate(int fd,int dup_fd)60 bool FileAction::Duplicate(int fd, int dup_fd) {
61 Clear();
62 if (fd >= 0 && dup_fd >= 0) {
63 m_action = eFileActionDuplicate;
64 m_fd = fd;
65 m_arg = dup_fd;
66 }
67 return m_fd >= 0;
68 }
69
Dump(Stream & stream) const70 void FileAction::Dump(Stream &stream) const {
71 stream.PutCString("file action: ");
72 switch (m_action) {
73 case eFileActionClose:
74 stream.Printf("close fd %d", m_fd);
75 break;
76 case eFileActionDuplicate:
77 stream.Printf("duplicate fd %d to %d", m_fd, m_arg);
78 break;
79 case eFileActionNone:
80 stream.PutCString("no action");
81 break;
82 case eFileActionOpen:
83 stream.Printf("open fd %d with '%s', OFLAGS = 0x%x", m_fd,
84 m_file_spec.GetCString(), m_arg);
85 break;
86 }
87 }
88