1 //===-- FileAction.cpp ------------------------------------------*- C++ -*-===//
2 //
3 //                     The LLVM Compiler Infrastructure
4 //
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
7 //
8 //===----------------------------------------------------------------------===//
9 
10 #include <fcntl.h>
11 
12 #if defined(_WIN32)
13 #include "lldb/Host/Windows/win32.h" // For O_NOCTTY
14 #endif
15 
16 #include "lldb/Core/Stream.h"
17 #include "lldb/Target/FileAction.h"
18 
19 using namespace lldb_private;
20 
21 //----------------------------------------------------------------------------
22 // FileAction member functions
23 //----------------------------------------------------------------------------
24 
25 FileAction::FileAction() :
26     m_action(eFileActionNone),
27     m_fd(-1),
28     m_arg(-1),
29     m_path()
30 {
31 }
32 
33 void
34 FileAction::Clear()
35 {
36     m_action = eFileActionNone;
37     m_fd = -1;
38     m_arg = -1;
39     m_path.clear();
40 }
41 
42 const char *
43 FileAction::GetPath() const
44 {
45     if (m_path.empty())
46         return NULL;
47     return m_path.c_str();
48 }
49 
50 bool
51 FileAction::Open(int fd, const char *path, bool read, bool write)
52 {
53     if ((read || write) && fd >= 0 && path && path[0])
54     {
55         m_action = eFileActionOpen;
56         m_fd = fd;
57         if (read && write)
58             m_arg = O_NOCTTY | O_CREAT | O_RDWR;
59         else if (read)
60             m_arg = O_NOCTTY | O_RDONLY;
61         else
62             m_arg = O_NOCTTY | O_CREAT | O_WRONLY;
63         m_path.assign(path);
64         return true;
65     }
66     else
67     {
68         Clear();
69     }
70     return false;
71 }
72 
73 bool
74 FileAction::Close(int fd)
75 {
76     Clear();
77     if (fd >= 0)
78     {
79         m_action = eFileActionClose;
80         m_fd = fd;
81     }
82     return m_fd >= 0;
83 }
84 
85 bool
86 FileAction::Duplicate(int fd, int dup_fd)
87 {
88     Clear();
89     if (fd >= 0 && dup_fd >= 0)
90     {
91         m_action = eFileActionDuplicate;
92         m_fd = fd;
93         m_arg = dup_fd;
94     }
95     return m_fd >= 0;
96 }
97 
98 void
99 FileAction::Dump(Stream &stream) const
100 {
101     stream.PutCString("file action: ");
102     switch (m_action)
103     {
104         case eFileActionClose:
105             stream.Printf("close fd %d", m_fd);
106             break;
107         case eFileActionDuplicate:
108             stream.Printf("duplicate fd %d to %d", m_fd, m_arg);
109             break;
110         case eFileActionNone:
111             stream.PutCString("no action");
112             break;
113         case eFileActionOpen:
114             stream.Printf("open fd %d with '%s', OFLAGS = 0x%x", m_fd, m_path.c_str(), m_arg);
115             break;
116     }
117 }
118