Annotation of prex/usr/lib/libc/stdio/stdio.c, Revision 1.1.1.1
1.1 nbrk 1: /*-
2: * Copyright (c) 1990, 1993
3: * The Regents of the University of California. All rights reserved.
4: *
5: * This code is derived from software contributed to Berkeley by
6: * Chris Torek.
7: *
8: * Redistribution and use in source and binary forms, with or without
9: * modification, are permitted provided that the following conditions
10: * are met:
11: * 1. Redistributions of source code must retain the above copyright
12: * notice, this list of conditions and the following disclaimer.
13: * 2. Redistributions in binary form must reproduce the above copyright
14: * notice, this list of conditions and the following disclaimer in the
15: * documentation and/or other materials provided with the distribution.
16: * 3. Neither the name of the University nor the names of its contributors
17: * may be used to endorse or promote products derived from this software
18: * without specific prior written permission.
19: *
20: * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
21: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23: * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
24: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
25: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
26: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
27: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
28: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
29: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
30: * SUCH DAMAGE.
31: */
32:
33: #include <fcntl.h>
34: #include <unistd.h>
35: #include <stdio.h>
36: #include "local.h"
37:
38: /*
39: * Small standard I/O/seek/close functions.
40: * These maintain the `known seek offset' for seek optimisation.
41: */
42: int
43: __sread(fp, buf, n)
44: FILE *fp;
45: char *buf;
46: int n;
47: {
48: return (read(fp->_file, buf, n));
49: }
50:
51: int
52: __swrite(fp, buf, n)
53: FILE *fp;
54: char const *buf;
55: int n;
56: {
57: if (fp->_flags & __SAPP)
58: (void) lseek(fp->_file, (off_t)0, SEEK_END);
59: return (write(fp->_file, buf, n));
60: }
61:
62: fpos_t
63: __sseek(fp, offset, whence)
64: FILE *fp;
65: fpos_t offset;
66: int whence;
67: {
68: return (lseek(fp->_file, (off_t)offset, whence));
69: }
70:
71: int
72: __sclose(fp)
73: FILE *fp;
74: {
75: return (close(fp->_file));
76: }
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