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
|
/* @(#)filewrite.c 1.9 97/04/20 Copyright 1986 J. Schilling */
/*
* Copyright (c) 1986 J. Schilling
*/
/*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2, or (at your option)
* any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; see the file COPYING. If not, write to
* the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#include <stdio.h>
#include "io.h"
static char _writeerr[] = "file_write_err";
#ifdef HAVE_USG_STDIO
int filewrite (f, vbuf, len)
register FILE *f;
void *vbuf;
int len;
{
register int n;
int cnt;
char *buf = vbuf;
down2(f, _IOWRT, _IORW);
if (f->_flag & _IONBF){
cnt = write (fileno(f), buf, len);
if (cnt < 0){
f->_flag |= _IOERR;
if (!(my_flag(f) & _IONORAISE))
raisecond(_writeerr, 0L);
}
return cnt;
}
cnt = 0;
while (len > 0) {
if (f->_cnt <= 0){
if (_flsbuf((unsigned char) *buf++, f) == EOF)
break;
cnt++;
if (--len == 0)
break;
}
if ((n = f->_cnt >= len ? len : f->_cnt) > 0) {
f->_ptr = (unsigned char *)movebytes (buf, f->_ptr, n);
buf += n;
f->_cnt -= n;
cnt += n;
len -= n;
}
}
if (!ferror(f))
return cnt;
if (!(my_flag(f) & _IONORAISE))
raisecond(_writeerr, 0L);
return -1;
}
#else
int filewrite (f, vbuf, len)
register FILE *f;
void *vbuf;
int len;
{
int cnt;
char *buf = vbuf;
down2(f, _IOWRT, _IORW);
if (my_flag(f) & _IOUNBUF)
return write(fileno(f), buf, len);
cnt = fwrite(buf, 1, len, f);
if (!ferror(f))
return cnt;
if (!(my_flag(f) & _IONORAISE))
raisecond(_writeerr, 0L);
return -1;
}
#endif /* HAVE_USG_STDIO */
|
