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
|
/*
* Copyright (C) 2003 by Darren Reed.
*
* See the IPFILTER.LICENCE file for details on licencing.
*/
#ifndef __hpux
#pragma ident "@(#)$Id: misc.c,v 1.12 2003/11/29 07:11:03 darrenr Exp $"
#else
struct uio;
#endif
#include <sys/systm.h>
#include <sys/types.h>
#include <sys/stream.h>
#include "compat.h"
#ifdef __hpux
# define BCOPY(a,b,c) bcopy((caddr_t)a, (caddr_t)b, c)
#endif
#ifdef sun
# define BCOPY(a,b,c) bcopy((char *)a, (char *)b, c)
#endif
void mb_copydata(min, off, len, buf)
mblk_t *min;
size_t off, len;
char *buf;
{
u_char *s, *bp = (u_char *)buf;
size_t mlen, olen, clen;
mblk_t *m;
for (m = min; (m != NULL) && (len > 0); m = m->b_cont) {
if (MTYPE(m) != M_DATA)
continue;
s = m->b_rptr;
mlen = m->b_wptr - s;
olen = MIN(off, mlen);
if ((olen == mlen) || (olen < off)) {
off -= olen;
continue;
} else if (olen) {
off -= olen;
s += olen;
mlen -= olen;
}
clen = MIN(mlen, len);
BCOPY(s, bp, clen);
len -= clen;
bp += clen;
}
}
void mb_copyback(min, off, len, buf)
mblk_t *min;
size_t off, len;
char *buf;
{
u_char *s, *bp = (u_char *)buf;
size_t mlen, olen, clen;
mblk_t *m, *mp;
for (m = min, mp = NULL; (m != NULL) && (len > 0); m = m->b_cont) {
mp = m;
if (MTYPE(m) != M_DATA)
continue;
s = m->b_rptr;
mlen = m->b_wptr - s;
olen = MIN(off, mlen);
if ((olen == mlen) || (olen < off)) {
off -= olen;
continue;
} else if (olen) {
off -= olen;
s += olen;
mlen -= olen;
}
clen = MIN(mlen, len);
BCOPY(bp, s, clen);
len -= clen;
bp += clen;
}
if ((m == NULL) && (mp != NULL)) {
if (len > 0) {
mlen = mp->b_datap->db_lim - mp->b_wptr;
if (mlen > 0) {
if (mlen > len)
mlen = len;
bcopy((char *)bp, (char *)mp->b_wptr, mlen);
bp += mlen;
len -= mlen;
mp->b_wptr += mlen;
#ifdef STRUIO_IP
# if SOLARIS2 < 10
mp->b_datap->db_struiolim = mp->b_wptr;
# endif
mp->b_datap->db_struioflag &= ~STRUIO_IP;
#endif
}
}
if (len > 0) {
m = allocb(len, BPRI_MED);
if (m != NULL) {
bcopy((char *)bp, (char *)m->b_wptr, len);
m->b_band = mp->b_band;
m->b_wptr += len;
linkb(mp, m);
}
}
}
}
|
