1/* $OpenBSD: privsep.c,v 1.8 2004/03/14 19:17:05 otto Exp $ */
2
3/*
4 * Copyright (c) 2003 Can Erkin Acar
5 * Copyright (c) 2003 Anil Madhavapeddy <anil@recoil.org>
6 *
7 * Permission to use, copy, modify, and distribute this software for any
8 * purpose with or without fee is hereby granted, provided that the above
9 * copyright notice and this permission notice appear in all copies.
10 *
11 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
12 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
13 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
14 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
15 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
16 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
17 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
18 */
19#include <sys/ioctl.h>
20#include <sys/types.h>
21#include <sys/time.h>
22#include <sys/socket.h>
23#include <sys/ioctl.h>
24
25#include <net/if.h>
26#include <net/bpf.h>
27
28#include <err.h>
29#include <errno.h>
30#include <fcntl.h>
31#include <pcap.h>
32#include <pcap-int.h>
33#include <pwd.h>
34#include <signal.h>
35#include <stdio.h>
36#include <stdlib.h>
37#include <string.h>
38#include <syslog.h>
39#include <unistd.h>
40#include "pflogd.h"
41
42enum cmd_types {
43 PRIV_SET_SNAPLEN, /* set the snaplength */
44 PRIV_OPEN_LOG /* open logfile for appending */
45};

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65/* based on syslogd privsep */
66int
67priv_init(void)
68{
69 int i, fd, socks[2], cmd;
70 int snaplen, ret;
71 struct passwd *pw;
72
73 for (i = 1; i < _NSIG; i++)
74 signal(i, SIG_DFL);
75
76 /* Create sockets */
77 if (socketpair(AF_LOCAL, SOCK_STREAM, PF_UNSPEC, socks) == -1)
78 err(1, "socketpair() failed");
79
80 pw = getpwnam("_pflogd");
81 if (pw == NULL)

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