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
|
--- choparp.c.orig Fri Nov 8 07:36:03 2002
+++ choparp.c Sat Apr 8 14:37:41 2006
@@ -42,6 +42,7 @@
#include <string.h>
#include <sys/types.h>
#include <fcntl.h>
+#include <sys/event.h>
#include <sys/time.h>
#include <sys/ioctl.h>
#include <net/bpf.h>
@@ -280,13 +281,22 @@
char *rframe;
char *sframe;
size_t frame_len;
- fd_set fdset;
+ int kq;
+ struct kevent kev;
- FD_ZERO(&fdset);
- FD_SET(fd,&fdset);
+ if ((kq = kqueue()) < 0) {
+ perror("kqueue");
+ return;
+ }
+
+ EV_SET(&kev, fd, EVFILT_READ, EV_ADD, 0, 0, NULL);
+ if (kevent(kq, &kev, 1, NULL, 0, NULL) < 0 ) {
+ perror("kevent");
+ return;
+ }
for(;;){
- int r = select(fd+1,&fdset, 0, 0, 0);
+ int r = kevent(kq, NULL, 0, &kev, 1, NULL);
if (r < 0) {
if (errno == EINTR)
@@ -295,7 +305,7 @@
return;
}
- rlen = read(fd, buf, buflen);
+ rlen = read(kev.ident, buf, buflen);
if (rlen < 0) {
if (errno == EINTR)
continue;
@@ -307,7 +317,7 @@
while((rframe = getarp(p, rlen, &nextp, &nextlen)) != NULL){
if (checkarp(rframe)){
sframe = gen_arpreply(rframe, &frame_len);
- write(fd, sframe, frame_len);
+ write(kev.ident, sframe, frame_len);
}
p = nextp;
rlen = nextlen;
@@ -437,6 +447,9 @@
#endif
if ((fd = openbpf(ifname, &buf, &buflen)) < 0)
return(-1);
+ #ifndef DEBUG
+ daemon(0, 0);
+ #endif
loop(fd, buf, buflen);
return(-1);
}
|
