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106 lines
2.6 KiB
106 lines
2.6 KiB
/* BEGIN_COMMON_COPYRIGHT_HEADER
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* (c)LGPL2+
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*
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* LXDE-Qt - a lightweight, Qt based, desktop toolset
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* http://razor-qt.org
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*
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* Copyright: 2013 Razor team
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* Authors:
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* Kuzma Shapran <kuzma.shapran@gmail.com>
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*
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* This program or library is free software; you can redistribute it
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* and/or modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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* You should have received a copy of the GNU Lesser General
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* Public License along with this library; if not, write to the
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* Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
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* Boston, MA 02110-1301 USA
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*
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* END_COMMON_COPYRIGHT_HEADER */
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#include "pipe_utils.h"
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#include <unistd.h>
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#include <fcntl.h>
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void initBothPipeEnds(int fd[2])
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{
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fd[STDIN_FILENO] = -1;
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fd[STDOUT_FILENO] = -1;
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}
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error_t createPipe(int fd[2])
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{
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error_t result = static_cast<error_t>(0);
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if (pipe(fd) < 0)
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{
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result = static_cast<error_t>(errno);
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}
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if (!result)
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{
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fcntl(fd[STDIN_FILENO], F_SETFD, FD_CLOEXEC);
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fcntl(fd[STDOUT_FILENO], F_SETFD, FD_CLOEXEC);
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}
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return result;
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}
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error_t readAll(int fd, void *data, size_t length)
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{
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while (length)
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{
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ssize_t bytes_read = read(fd, data, length);
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if (bytes_read < 0)
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{
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return static_cast<error_t>(errno);
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}
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if (!bytes_read)
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{
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return static_cast<error_t>(-1);
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}
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data = reinterpret_cast<char *>(data) + bytes_read;
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length -= bytes_read;
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}
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return static_cast<error_t>(0);
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}
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error_t writeAll(int fd, const void *data, size_t length)
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{
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while (length)
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{
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ssize_t bytes_written = write(fd, data, length);
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if (bytes_written < 0)
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{
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return static_cast<error_t>(errno);
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}
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if (!bytes_written)
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{
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return static_cast<error_t>(-1);
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}
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data = reinterpret_cast<const char *>(data) + bytes_written;
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length -= bytes_written;
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}
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return static_cast<error_t>(0);
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}
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void closeBothPipeEnds(int fd[2])
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{
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if (fd[STDIN_FILENO] != -1)
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{
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close(fd[STDIN_FILENO]);
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fd[STDIN_FILENO] = -1;
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}
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if (fd[STDOUT_FILENO] != -1)
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{
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close(fd[STDOUT_FILENO]);
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fd[STDOUT_FILENO] = -1;
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}
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}
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