42 lines
1.3 KiB
C
42 lines
1.3 KiB
C
/* -*-comment-start: "//";comment-end:""-*-
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* GNU Mes --- Maxwell Equations of Software
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* Copyright © 2019 Jan (janneke) Nieuwenhuizen <janneke@gnu.org>
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*
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* This file is part of GNU Mes.
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*
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* GNU Mes is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 3 of the License, or (at
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* your option) any later version.
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*
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* GNU Mes is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with GNU Mes. If not, see <http://www.gnu.org/licenses/>.
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*/
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/** Commentary:
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Inspired by implementation in GNU C Library:
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_hurd_fd_write -- write to a file descriptor; handles job control et al.
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Copyright (C) 1993-2016 Free Software Foundation, Inc.
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*/
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#include <errno.h>
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#include <unistd.h>
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#include <gnu/hurd.h>
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#include <gnu/syscall.h>
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error_t
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fd_write (mach_port_t port, void const *buffer, size_t *size, loff_t offset)
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{
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mach_msg_type_number_t wrote = 0;
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error_t err = __io_write (port, buffer, *size, 0, &wrote);
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if (! err)
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*size = wrote;
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return err;
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}
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