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 {
29 return m_file_spec.GetPathAsConstString().AsCString();
30 }
31
GetFileSpec() const32 const FileSpec &FileAction::GetFileSpec() const { return m_file_spec; }
33
Open(int fd,const FileSpec & file_spec,bool read,bool write)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
Close(int fd)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
Duplicate(int fd,int dup_fd)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
Dump(Stream & stream) const72 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