| //===-- PseudoTerminal.h ----------------------------------------*- C++ -*-===// |
| // |
| // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
| // See https://llvm.org/LICENSE.txt for license information. |
| // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
| // |
| //===----------------------------------------------------------------------===// |
| // |
| // Created by Greg Clayton on 1/8/08. |
| // |
| //===----------------------------------------------------------------------===// |
| |
| #ifndef LLDB_TOOLS_DEBUGSERVER_SOURCE_PSEUDOTERMINAL_H |
| #define LLDB_TOOLS_DEBUGSERVER_SOURCE_PSEUDOTERMINAL_H |
| |
| #include <fcntl.h> |
| #include <string> |
| #include <termios.h> |
| |
| class PseudoTerminal { |
| public: |
| enum { invalid_fd = -1, invalid_pid = -1 }; |
| |
| enum Status { |
| success = 0, |
| err_posix_openpt_failed = -2, |
| err_grantpt_failed = -3, |
| err_unlockpt_failed = -4, |
| err_ptsname_failed = -5, |
| err_open_secondary_failed = -6, |
| err_fork_failed = -7, |
| err_setsid_failed = -8, |
| err_failed_to_acquire_controlling_terminal = -9, |
| err_dup2_failed_on_stdin = -10, |
| err_dup2_failed_on_stdout = -11, |
| err_dup2_failed_on_stderr = -12 |
| }; |
| // Constructors and Destructors |
| PseudoTerminal(); |
| ~PseudoTerminal(); |
| |
| void ClosePrimary(); |
| void CloseSecondary(); |
| Status OpenFirstAvailablePrimary(int oflag); |
| Status OpenSecondary(int oflag); |
| int PrimaryFD() const { return m_primary_fd; } |
| int SecondaryFD() const { return m_secondary_fd; } |
| int ReleasePrimaryFD() { |
| // Release ownership of the primary pseudo terminal file |
| // descriptor without closing it. (the destructor for this |
| // class will close it otherwise!) |
| int fd = m_primary_fd; |
| m_primary_fd = invalid_fd; |
| return fd; |
| } |
| int ReleaseSecondaryFD() { |
| // Release ownership of the secondary pseudo terminal file |
| // descriptor without closing it (the destructor for this |
| // class will close it otherwise!) |
| int fd = m_secondary_fd; |
| m_secondary_fd = invalid_fd; |
| return fd; |
| } |
| |
| const char *SecondaryName() const; |
| |
| pid_t Fork(Status &error); |
| |
| protected: |
| // Classes that inherit from PseudoTerminal can see and modify these |
| int m_primary_fd; |
| int m_secondary_fd; |
| |
| private: |
| PseudoTerminal(const PseudoTerminal &rhs) = delete; |
| PseudoTerminal &operator=(const PseudoTerminal &rhs) = delete; |
| }; |
| |
| #endif // LLDB_TOOLS_DEBUGSERVER_SOURCE_PSEUDOTERMINAL_H |