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