53 lines
1.5 KiB
C
53 lines
1.5 KiB
C
/* -*-comment-start: "//";comment-end:""-*-
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* GNU Mes --- Maxwell Equations of Software
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* Copyright © 2016,2017,2018,2019 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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#include <linux/syscall.h>
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#include <syscall.h>
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#include <mes/lib.h>
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#include <fcntl.h>
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ssize_t
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read (int filedes, void *buffer, size_t size)
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{
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long long_filedes = filedes;
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ssize_t bytes = _sys_call3 (SYS_read, long_filedes, buffer, size);
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if (__mes_debug () > 4)
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{
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if (bytes == 1)
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{
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eputs ("read fd=");
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eputs (itoa (filedes));
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eputs (" c=");
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char *s = buffer;
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eputc (s[0]);
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eputs ("\n");
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}
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else
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{
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eputs ("read fd=");
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eputs (itoa (filedes));
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eputs (" bytes=");
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eputs (itoa (bytes));
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eputs ("\n");
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}
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}
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return bytes;
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}
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