1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
|
/*
* Copyright (c) 1990 The Regents of the University of California.
* All rights reserved.
*
* Redistribution and use in source and binary forms are permitted
* provided that the above copyright notice and this paragraph are
* duplicated in all such forms and that any documentation,
* advertising materials, and other materials related to such
* distribution and use acknowledge that the software was developed
* by the University of California, Berkeley. The name of the
* University may not be used to endorse or promote products derived
* from this software without specific prior written permission.
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
*/
/* No user fns here. Pesch 15apr92. */
#include <_ansi.h>
#include <reent.h>
#include <stdio.h>
#include <sys/types.h>
#include <fcntl.h>
#include <sys/unistd.h>
#include "local.h"
/*
* Small standard I/O/seek/close functions.
* These maintain the `known seek offset' for seek optimisation.
*/
_READ_WRITE_RETURN_TYPE
_DEFUN(__sread, (cookie, buf, n),
_PTR cookie _AND
char *buf _AND
int n)
{
register FILE *fp = (FILE *) cookie;
register int ret;
#ifdef __SCLE
int oldmode = 0;
if (fp->_flags & __SCLE)
oldmode = setmode (fp->_file, O_BINARY);
#endif
ret = _read_r (_REENT, fp->_file, buf, n);
#ifdef __SCLE
if (oldmode)
setmode (fp->_file, oldmode);
#endif
/* If the read succeeded, update the current offset. */
if (ret >= 0)
fp->_offset += ret;
else
fp->_flags &= ~__SOFF; /* paranoia */
return ret;
}
_READ_WRITE_RETURN_TYPE
_DEFUN(__swrite, (cookie, buf, n),
_PTR cookie _AND
char _CONST *buf _AND
int n)
{
register FILE *fp = (FILE *) cookie;
int w;
#ifdef __SCLE
int oldmode=0;
#endif
if (fp->_flags & __SAPP)
_CAST_VOID _lseek_r (_REENT, fp->_file, (_off_t) 0, SEEK_END);
fp->_flags &= ~__SOFF; /* in case O_APPEND mode is set */
#ifdef __SCLE
if (fp->_flags & __SCLE)
oldmode = setmode (fp->_file, O_BINARY);
#endif
w = _write_r (_REENT, fp->_file, buf, n);
#ifdef __SCLE
if (oldmode)
setmode (fp->_file, oldmode);
#endif
return w;
}
_fpos_t
_DEFUN(__sseek, (cookie, offset, whence),
_PTR cookie _AND
_fpos_t offset _AND
int whence)
{
register FILE *fp = (FILE *) cookie;
register _off_t ret;
ret = _lseek_r (_REENT, fp->_file, (_off_t) offset, whence);
if (ret == -1L)
fp->_flags &= ~__SOFF;
else
{
fp->_flags |= __SOFF;
fp->_offset = ret;
}
return ret;
}
int
_DEFUN(__sclose, (cookie),
_PTR cookie)
{
FILE *fp = (FILE *) cookie;
return _close_r (_REENT, fp->_file);
}
#ifdef __SCLE
int
_DEFUN(__stextmode, (fd),
int fd)
{
#ifdef __CYGWIN__
return _cygwin_istext_for_stdio (fd);
#else
return 0;
#endif
}
#endif
|
