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Speccy ClassiX 1998
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ixemulsrc.lha
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ixemul-41.4
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__mread.c
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1995-05-17
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/*
* This file is part of ixemul.library for the Amiga.
* Copyright (C) 1991, 1992 Markus M. Wild
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library 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
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the Free
* Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*
* __mread.c,v 1.1.1.1 1994/04/04 04:30:11 amiga Exp
*
* __mread.c,v
* Revision 1.1.1.1 1994/04/04 04:30:11 amiga
* Initial CVS check in.
*
* Revision 1.1 1992/05/14 19:55:40 mwild
* Initial revision
*
*/
#define KERNEL
#include "ixemul.h"
int
__mread(struct file *f, char *buf, int len)
{
int real_len;
int left;
int omask;
omask = syscall (SYS_sigsetmask, ~0);
__get_file (f);
left = f->f_stb.st_size - f->f_mf.mf_offset;
real_len = left < len ? left : len;
bcopy (((char *)f->f_mf.mf_buffer) + f->f_mf.mf_offset, buf, real_len);
f->f_mf.mf_offset += real_len;
__release_file (f);
syscall (SYS_sigsetmask, omask);
return real_len;
}