63 lines
1.8 KiB
C
63 lines
1.8 KiB
C
/* ----------------------------------------------------------------------- *
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*
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* Copyright 2004-2008 H. Peter Anvin - All Rights Reserved
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*
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* Permission is hereby granted, free of charge, to any person
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* obtaining a copy of this software and associated documentation
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* files (the "Software"), to deal in the Software without
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* restriction, including without limitation the rights to use,
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* copy, modify, merge, publish, distribute, sublicense, and/or
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* sell copies of the Software, and to permit persons to whom
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* the Software is furnished to do so, subject to the following
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* conditions:
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*
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* The above copyright notice and this permission notice shall
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* be included in all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
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* OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
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* HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
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* WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
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* OTHER DEALINGS IN THE SOFTWARE.
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*
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* ----------------------------------------------------------------------- */
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/*
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* close.c
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*/
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#include <errno.h>
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#include <com32.h>
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#include <string.h>
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#include "file.h"
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int close(int fd)
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{
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struct file_info *fp = &__file_info[fd];
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int rv = 0;
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if (fd >= NFILES || !fp->iop || !fp->oop) {
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errno = EBADF;
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return -1;
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}
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if (fp->iop->close) {
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rv = fp->iop->close(fp);
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if (rv)
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return rv;
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}
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fp->iop = &dev_error_r;
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if (fp->oop->close) {
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rv = fp->oop->close(fp);
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if (rv)
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return rv;
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}
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memset(fp, 0, sizeof *fp); /* File structure unused */
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return 0;
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}
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