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-rw-r--r--src/Platform/Unix/Pipe.cpp65
1 files changed, 65 insertions, 0 deletions
diff --git a/src/Platform/Unix/Pipe.cpp b/src/Platform/Unix/Pipe.cpp
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+/*
+ Copyright (c) 2008 TrueCrypt Developers Association. All rights reserved.
+
+ Governed by the TrueCrypt License 3.0 the full text of which is contained in
+ the file License.txt included in TrueCrypt binary and source code distribution
+ packages.
+*/
+
+#include <unistd.h>
+#include "Pipe.h"
+#include "Platform/SystemException.h"
+
+namespace TrueCrypt
+{
+ Pipe::Pipe ()
+ {
+ int fd[2];
+ throw_sys_if (pipe (fd) == -1);
+ ReadFileDescriptor = fd[0];
+ WriteFileDescriptor = fd[1];
+ }
+
+ Pipe::~Pipe ()
+ {
+ try
+ {
+ Close();
+ }
+ catch (...) { }
+ }
+
+ void Pipe::Close ()
+ {
+ if (ReadFileDescriptor != -1)
+ close (ReadFileDescriptor);
+ if (WriteFileDescriptor != -1)
+ close (WriteFileDescriptor);
+ }
+
+ int Pipe::GetReadFD ()
+ {
+ assert (ReadFileDescriptor != -1);
+
+ if (WriteFileDescriptor != -1)
+ {
+ close (WriteFileDescriptor);
+ WriteFileDescriptor = -1;
+ }
+
+ return ReadFileDescriptor;
+ }
+
+ int Pipe::GetWriteFD ()
+ {
+ assert (WriteFileDescriptor != -1);
+
+ if (ReadFileDescriptor != -1)
+ {
+ close (ReadFileDescriptor);
+ ReadFileDescriptor = -1;
+ }
+
+ return WriteFileDescriptor;
+ }
+}