forked from OSchip/llvm-project
80 lines
2.3 KiB
C++
80 lines
2.3 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 LLDB_TOOLS_DEBUGSERVER_SOURCE_PSEUDOTERMINAL_H
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#define LLDB_TOOLS_DEBUGSERVER_SOURCE_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_secondary_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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// Constructors and Destructors
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PseudoTerminal();
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~PseudoTerminal();
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void ClosePrimary();
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void CloseSecondary();
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Status OpenFirstAvailablePrimary(int oflag);
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Status OpenSecondary(int oflag);
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int PrimaryFD() const { return m_primary_fd; }
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int SecondaryFD() const { return m_secondary_fd; }
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int ReleasePrimaryFD() {
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// Release ownership of the primary 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_primary_fd;
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m_primary_fd = invalid_fd;
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return fd;
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}
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int ReleaseSecondaryFD() {
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// Release ownership of the secondary 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_secondary_fd;
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m_secondary_fd = invalid_fd;
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return fd;
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}
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const char *SecondaryName() const;
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pid_t Fork(Status &error);
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protected:
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// Classes that inherit from PseudoTerminal can see and modify these
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int m_primary_fd;
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int m_secondary_fd;
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private:
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PseudoTerminal(const PseudoTerminal &rhs) = delete;
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PseudoTerminal &operator=(const PseudoTerminal &rhs) = delete;
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};
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#endif // LLDB_TOOLS_DEBUGSERVER_SOURCE_PSEUDOTERMINAL_H
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