2946cd7010
to reflect the new license. We understand that people may be surprised that we're moving the header entirely to discuss the new license. We checked this carefully with the Foundation's lawyer and we believe this is the correct approach. Essentially, all code in the project is now made available by the LLVM project under our new license, so you will see that the license headers include that license only. Some of our contributors have contributed code under our old license, and accordingly, we have retained a copy of our old license notice in the top-level files in each project and repository. llvm-svn: 351636
87 lines
2.7 KiB
C++
87 lines
2.7 KiB
C++
//===-- PseudoTerminal.h ----------------------------------------*- C++ -*-===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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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 <string>
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#include <termios.h>
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class PseudoTerminal {
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public:
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enum { invalid_fd = -1, invalid_pid = -1 };
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enum Status {
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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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Status OpenFirstAvailableMaster(int oflag);
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Status 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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// 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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// 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(Status &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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