live-bootstrap/sysa/mes-0.22/lib/gnu/_read.c
fosslinux 649d7b68dc Add mes and mescc-tools-extra
mescc-tools-extra contains two important tools:
- cp
- chmod

mes first builds itself from a mes 0.21 seed as used by guix, and then
builds a mes 0.22 and then mes 0.22 using that created mes 0.22.

It does /not/ use bootstrap.sh as we don't have a proper shell at this
point, it has been manually adapted for kaem.
2020-12-25 18:40:14 +11:00

34 lines
1.1 KiB
C

/* -*-comment-start: "//";comment-end:""-*-
* GNU Mes --- Maxwell Equations of Software
* Copyright © 2019 Jan (janneke) Nieuwenhuizen <janneke@gnu.org>
*
* This file is part of GNU Mes.
*
* GNU Mes is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 3 of the License, or (at
* your option) any later version.
*
* GNU Mes is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with GNU Mes. If not, see <http://www.gnu.org/licenses/>.
*/
#include <gnu/hurd.h>
#include <gnu/hurd-types.h>
#include <gnu/syscall.h>
#include <mach/mach-init.h>
ssize_t
_read (int filedes, void *buffer, size_t size)
{
mach_port_t p = fd_get (filedes);
error_t e = fd_read (p, buffer, &size, -1);
if (!e)
return size;
return -1;
}