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()
20 : m_action(eFileActionNone), m_fd(-1), m_arg(-1), m_file_spec() {}
21
Clear()22 void FileAction::Clear() {
23 m_action = eFileActionNone;
24 m_fd = -1;
25 m_arg = -1;
26 m_file_spec.Clear();
27 }
28
GetPath() const29 llvm::StringRef FileAction::GetPath() const { return m_file_spec.GetCString(); }
30
GetFileSpec() const31 const FileSpec &FileAction::GetFileSpec() const { return m_file_spec; }
32
Open(int fd,const FileSpec & file_spec,bool read,bool write)33 bool 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
Close(int fd)52 bool 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
Duplicate(int fd,int dup_fd)61 bool 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
Dump(Stream & stream) const71 void 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