forked from OSchip/llvm-project
95 lines
3.3 KiB
C++
95 lines
3.3 KiB
C++
//===-- PseudoTerminal.h ----------------------------------------*- C++ -*-===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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//
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// Created by Greg Clayton on 1/8/08.
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//
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//===----------------------------------------------------------------------===//
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#ifndef __PseudoTerminal_h__
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#define __PseudoTerminal_h__
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#include <fcntl.h>
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#include <termios.h>
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#include <string>
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class PseudoTerminal
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{
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public:
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enum {
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invalid_fd = -1,
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invalid_pid = -1
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};
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enum Error
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{
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success = 0,
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err_posix_openpt_failed = -2,
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err_grantpt_failed = -3,
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err_unlockpt_failed = -4,
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err_ptsname_failed = -5,
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err_open_slave_failed = -6,
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err_fork_failed = -7,
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err_setsid_failed = -8,
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err_failed_to_acquire_controlling_terminal = -9,
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err_dup2_failed_on_stdin = -10,
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err_dup2_failed_on_stdout = -11,
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err_dup2_failed_on_stderr = -12
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};
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//------------------------------------------------------------------
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// Constructors and Destructors
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//------------------------------------------------------------------
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PseudoTerminal ();
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~PseudoTerminal ();
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void CloseMaster ();
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void CloseSlave ();
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Error OpenFirstAvailableMaster (int oflag);
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Error OpenSlave (int oflag);
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int MasterFD () const { return m_master_fd; }
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int SlaveFD () const { return m_slave_fd; }
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int ReleaseMasterFD ()
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{
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// Release ownership of the master pseudo terminal file
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// descriptor without closing it. (the destructor for this
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// class will close it otherwise!)
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int fd = m_master_fd;
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m_master_fd = invalid_fd;
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return fd;
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}
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int ReleaseSlaveFD ()
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{
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// Release ownership of the slave pseudo terminal file
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// descriptor without closing it (the destructor for this
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// class will close it otherwise!)
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int fd = m_slave_fd;
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m_slave_fd = invalid_fd;
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return fd;
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}
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const char* SlaveName () const;
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pid_t Fork(Error& error);
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protected:
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//------------------------------------------------------------------
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// Classes that inherit from PseudoTerminal can see and modify these
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//------------------------------------------------------------------
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int m_master_fd;
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int m_slave_fd;
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private:
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//------------------------------------------------------------------
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// Outlaw copy and assignment constructors
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//------------------------------------------------------------------
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PseudoTerminal(const PseudoTerminal& rhs);
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PseudoTerminal& operator=(const PseudoTerminal& rhs);
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};
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#endif // #ifndef __PseudoTerminal_h__
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