64ba7d5be8
Convert a number of destructors to default synthesized functions. Try to inline a few instances into the header. It should be possible to inline all of them, however, gcc seems to emit a number of warnings. Furthermore, some of the destructors are pure-virtualed, but provide an implementation. Placing the definition into the header causes ODR violations.
113 lines
3.5 KiB
C++
113 lines
3.5 KiB
C++
/* vim: set sw=4 sts=4 et foldmethod=syntax : */
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/*
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* Copyright (c) 2006, 2007, 2008, 2010 Ciaran McCreesh
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* Copyright (c) 2009 David Leverton
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*
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* This file is part of the Paludis package manager. Paludis is free software;
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* you can redistribute it and/or modify it under the terms of the GNU General
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* Public License version 2, as published by the Free Software Foundation.
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*
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* Paludis is distributed in the hope that it will be useful, but WITHOUT ANY
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* WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
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* FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
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* details.
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*
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* You should have received a copy of the GNU General Public License along with
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* this program; if not, write to the Free Software Foundation, Inc., 59 Temple
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* Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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#include "pty.hh"
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#include <paludis/util/exception.hh>
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#include <paludis/util/log.hh>
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#include <stdlib.h>
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#include <fcntl.h>
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#include <errno.h>
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#include <cstring>
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#include <unistd.h>
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#include <sys/ioctl.h>
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#include "config.h"
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#ifdef HAVE_PTSNAME_R
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# include <vector>
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#endif
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using namespace paludis;
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PtyError::PtyError(const std::string & our_message) noexcept :
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Exception(our_message)
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{
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}
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Pty::Pty() : Pty(false, 0, 0)
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{
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}
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Pty::Pty(const bool close_exec, const unsigned short columns, const unsigned short lines)
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{
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Context context("When creating pty FDs:");
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_fds[0] = posix_openpt(O_RDWR | O_NOCTTY | (close_exec ? O_CLOEXEC : 0));
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if (-1 == _fds[0])
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throw PtyError("posix_openpt(3) failed (is /dev/pts mounted?): " + std::string(std::strerror(errno)));
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if (-1 == grantpt(_fds[0]))
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{
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close(_fds[0]);
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throw PtyError("grantpt(3) failed: " + std::string(std::strerror(errno)));
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}
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if (-1 == unlockpt(_fds[0]))
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{
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close(_fds[0]);
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throw PtyError("unlockpt(3) failed: " + std::string(std::strerror(errno)));
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}
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#ifdef HAVE_PTSNAME_R
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std::vector<char> name;
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name.resize(16);
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while (-1 == ptsname_r(_fds[0], &name[0], name.size()))
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{
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if (ERANGE == errno)
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name.resize(name.size() * 2);
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else
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{
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close(_fds[0]);
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throw PtyError("ptsname_r(3) failed: " + std::string(std::strerror(errno)));
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}
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}
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_fds[1] = open(&name[0], O_WRONLY | O_NOCTTY | (close_exec ? O_CLOEXEC : 0));
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#else
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const char * name(ptsname(_fds[0]));
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if (nullptr == name)
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{
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close(_fds[0]);
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throw PtyError("ptsname(3) failed: " + std::string(std::strerror(errno)));
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}
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_fds[1] = open(name, O_WRONLY | O_NOCTTY | (close_exec ? O_CLOEXEC : 0));
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#endif
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if (-1 == _fds[1])
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{
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close(_fds[0]);
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throw PtyError("open(2) failed: " + std::string(std::strerror(errno)));
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}
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Log::get_instance()->message("util.pty.fds", ll_debug, lc_context) << "Pty FDs are '" << read_fd() << "', '"
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<< write_fd() << "'";
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if (0 != columns && 0 != lines)
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{
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struct winsize ws;
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ws.ws_row = lines;
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ws.ws_col = columns;
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ws.ws_xpixel = ws.ws_ypixel = 0;
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if (-1 == ioctl(_fds[1], TIOCSWINSZ, &ws))
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Log::get_instance()->message("util.pty.swinsz.failed", ll_warning, lc_context)
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<< "ioctl(TIOCSWINSZ, { .ws_row = " << lines << ", .ws_col = " << columns << " }) failed: " + std::string(std::strerror(errno));
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else
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Log::get_instance()->message("util.pty.swinsz", ll_debug, lc_context)
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<< "Set Pty size to " << columns << "x" << lines;
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}
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}
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