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 #include "lldb/Core/Stream.h"
13 #include "lldb/Host/PosixApi.h"
14 #include "lldb/Target/FileAction.h"
15 
16 using namespace lldb_private;
17 
18 //----------------------------------------------------------------------------
19 // FileAction member functions
20 //----------------------------------------------------------------------------
21 
22 FileAction::FileAction()
23     : m_action(eFileActionNone), m_fd(-1), m_arg(-1), m_file_spec() {}
24 
25 void FileAction::Clear() {
26   m_action = eFileActionNone;
27   m_fd = -1;
28   m_arg = -1;
29   m_file_spec.Clear();
30 }
31 
32 llvm::StringRef FileAction::GetPath() const { return m_file_spec.GetCString(); }
33 
34 const FileSpec &FileAction::GetFileSpec() const { return m_file_spec; }
35 
36 bool FileAction::Open(int fd, const FileSpec &file_spec, bool read,
37                       bool write) {
38   if ((read || write) && fd >= 0 && file_spec) {
39     m_action = eFileActionOpen;
40     m_fd = fd;
41     if (read && write)
42       m_arg = O_NOCTTY | O_CREAT | O_RDWR;
43     else if (read)
44       m_arg = O_NOCTTY | O_RDONLY;
45     else
46       m_arg = O_NOCTTY | O_CREAT | O_WRONLY;
47     m_file_spec = file_spec;
48     return true;
49   } else {
50     Clear();
51   }
52   return false;
53 }
54 
55 bool FileAction::Close(int fd) {
56   Clear();
57   if (fd >= 0) {
58     m_action = eFileActionClose;
59     m_fd = fd;
60   }
61   return m_fd >= 0;
62 }
63 
64 bool FileAction::Duplicate(int fd, int dup_fd) {
65   Clear();
66   if (fd >= 0 && dup_fd >= 0) {
67     m_action = eFileActionDuplicate;
68     m_fd = fd;
69     m_arg = dup_fd;
70   }
71   return m_fd >= 0;
72 }
73 
74 void FileAction::Dump(Stream &stream) const {
75   stream.PutCString("file action: ");
76   switch (m_action) {
77   case eFileActionClose:
78     stream.Printf("close fd %d", m_fd);
79     break;
80   case eFileActionDuplicate:
81     stream.Printf("duplicate fd %d to %d", m_fd, m_arg);
82     break;
83   case eFileActionNone:
84     stream.PutCString("no action");
85     break;
86   case eFileActionOpen:
87     stream.Printf("open fd %d with '%s', OFLAGS = 0x%x", m_fd,
88                   m_file_spec.GetCString(), m_arg);
89     break;
90   }
91 }
92