37 lines
1.1 KiB
C
37 lines
1.1 KiB
C
/* read.c -- read characters from file, with hook.
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*
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* Copyright (c) 2003 Red Hat, Inc. All rights reserved.
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*
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* This copyrighted material is made available to anyone wishing to use, modify,
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* copy, or redistribute it subject to the terms and conditions of the BSD
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* License. This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY expressed or implied, including the implied
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* warranties of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. A copy
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* of this license is available at http://www.opensource.org/licenses. Any
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* Red Hat trademarks that are incorporated in the source code or documentation
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* are not subject to the BSD License and may only be used or replicated with
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* the express permission of Red Hat, Inc.
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*/
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extern int __mep_read(int, unsigned char *, int);
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extern int _ioIn(void) __attribute__((weak));
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int
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read(int fd, unsigned char *buf, int count)
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{
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if (fd == 0 && &_ioIn)
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{
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int c = 0;
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while (c < count)
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{
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int ch = _ioIn();
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*buf++ = ch;
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if (ch == -1)
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break;
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c ++;
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}
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return c;
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}
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return __mep_read(fd, buf, count);
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}
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