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
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
|
/* $OpenBSD: slstats.c,v 1.5 1996/08/05 12:02:54 deraadt Exp $ */
/* $NetBSD: slstats.c,v 1.6.6.1 1996/06/07 01:42:30 thorpej Exp $ */
/*
* print serial line IP statistics:
* slstats [-i interval] [-v] [interface] [system [core]]
*
* Copyright (c) 1989, 1990, 1991, 1992 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 MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
*
* Van Jacobson (van@ee.lbl.gov), Dec 31, 1989:
* - Initial distribution.
*/
#ifndef lint
static char rcsid[] = "$OpenBSD: slstats.c,v 1.5 1996/08/05 12:02:54 deraadt Exp $";
#endif
#define INET
#include <sys/param.h>
#include <sys/mbuf.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <sys/file.h>
#include <net/if.h>
#include <netinet/in.h>
#include <netinet/in_systm.h>
#include <netinet/ip.h>
#include <netinet/ip_var.h>
#include <net/slcompress.h>
#include <net/if_slvar.h>
#include <ctype.h>
#include <err.h>
#include <errno.h>
#include <fcntl.h>
#include <kvm.h>
#include <limits.h>
#include <signal.h>
#include <stdio.h>
#include <stdlib.h>
#include <paths.h>
#include <nlist.h>
#include <unistd.h>
struct nlist nl[] = {
#define N_SOFTC 0
{ "_sl_softc" },
"",
};
extern char __progname; /* from crt0.o */
char *kernel; /* kernel for namelist */
char *kmemf; /* memory file */
kvm_t *kd;
int vflag;
unsigned interval = 5;
int unit;
void catchalarm __P((void));
void intpr __P((void));
void usage __P((void));
int
main(argc, argv)
int argc;
char *argv[];
{
char errbuf[_POSIX2_LINE_MAX];
int ch;
while ((ch = getopt(argc, argv, "i:M:N:v")) != -1) {
switch (ch) {
case 'i':
interval = atoi(optarg);
if (interval <= 0)
usage();
break;
case 'M':
kmemf = optarg;
break;
case 'N':
kernel = optarg;
break;
case 'v':
++vflag;
break;
default:
usage();
}
}
argc -= optind;
argv += optind;
if (argc > 1)
usage();
while (argc--) {
if (isdigit(*argv[0])) {
unit = atoi(*argv);
if (unit < 0)
usage();
continue;
}
/* Fall to here, we have bogus arguments. */
usage();
}
/*
* Discard setgid privileges if not the running kernel so that bad
* guys can't print interesting stuff from kernel memory.
*/
if (kmemf != NULL || kernel != NULL)
setgid(getgid());
memset(errbuf, 0, sizeof(errbuf));
if ((kd = kvm_openfiles(kernel, kmemf, NULL, O_RDONLY, errbuf)) == NULL)
errx(1, "can't open kvm: %s", errbuf);
if (kvm_nlist(kd, nl) < 0 || nl[0].n_type == 0)
errx(1, "%s: SLIP symbols not in namelist",
kernel == NULL ? _PATH_UNIX : kernel);
intpr();
exit(0);
}
#define V(offset) ((line % 20)? sc->offset - osc->offset : sc->offset)
#define AMT (sizeof(*sc) - 2 * sizeof(sc->sc_comp.tstate))
void
usage()
{
fprintf(stderr, "usage: %s [-M core] [-N system] [-i interval] %s",
__progname, "[-v] [unit]\n");
exit(1);
}
u_char signalled; /* set if alarm goes off "early" */
/*
* Print a running summary of interface statistics.
* Repeat display every interval seconds, showing statistics
* collected over that interval. Assumes that interval is non-zero.
* First line printed at top of screen is always cumulative.
*/
void
intpr()
{
register int line = 0;
int oldmask;
struct sl_softc *sc, *osc;
u_long addr;
addr = nl[N_SOFTC].n_value + unit * sizeof(struct sl_softc);
sc = (struct sl_softc *)malloc(AMT);
osc = (struct sl_softc *)malloc(AMT);
bzero((char *)osc, AMT);
while (1) {
if (kvm_read(kd, addr, (char *)sc, AMT) != AMT)
errx(1, "kvm_read: %s", kvm_geterr(kd));
(void)signal(SIGALRM, (void (*)())catchalarm);
signalled = 0;
(void)alarm(interval);
if ((line % 20) == 0) {
printf("%8.8s %6.6s %6.6s %6.6s %6.6s",
"IN", "PACK", "COMP", "UNCOMP", "ERR");
if (vflag)
printf(" %6.6s %6.6s", "TOSS", "IP");
printf(" | %8.8s %6.6s %6.6s %6.6s %6.6s",
"OUT", "PACK", "COMP", "UNCOMP", "IP");
if (vflag)
printf(" %6.6s %6.6s", "SEARCH", "MISS");
putchar('\n');
}
printf("%8u %6d %6u %6u %6u",
V(sc_if.if_ibytes),
V(sc_if.if_ipackets),
V(sc_comp.sls_compressedin),
V(sc_comp.sls_uncompressedin),
V(sc_comp.sls_errorin));
if (vflag)
printf(" %6u %6u",
V(sc_comp.sls_tossed),
V(sc_if.if_ipackets) -
V(sc_comp.sls_compressedin) -
V(sc_comp.sls_uncompressedin) -
V(sc_comp.sls_errorin));
printf(" | %8u %6d %6u %6u %6u",
V(sc_if.if_obytes),
V(sc_if.if_opackets),
V(sc_comp.sls_compressed),
V(sc_comp.sls_packets) - V(sc_comp.sls_compressed),
V(sc_if.if_opackets) - V(sc_comp.sls_packets));
if (vflag)
printf(" %6u %6u",
V(sc_comp.sls_searches),
V(sc_comp.sls_misses));
putchar('\n');
fflush(stdout);
line++;
oldmask = sigblock(sigmask(SIGALRM));
if (! signalled) {
sigpause(0);
}
sigsetmask(oldmask);
signalled = 0;
(void)alarm(interval);
bcopy((char *)sc, (char *)osc, AMT);
}
}
/*
* Called if an interval expires before sidewaysintpr has completed a loop.
* Sets a flag to not wait for the alarm.
*/
void
catchalarm()
{
signalled = 1;
}
|
