2 * Copyright (c) 1999, 2000, 2001 Boris Popov
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 * 3. All advertising materials mentioning features or use of this software
14 * must display the following acknowledgement:
15 * This product includes software developed by Boris Popov.
16 * 4. Neither the name of the author nor the names of any co-contributors
17 * may be used to endorse or promote products derived from this software
18 * without specific prior written permission.
20 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
24 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
33 #include <sys/cdefs.h>
34 __FBSDID("$FreeBSD$");
36 #include <sys/param.h>
37 #include <sys/systm.h>
38 #include <sys/errno.h>
39 #include <sys/eventhandler.h>
40 #include <sys/kernel.h>
42 #include <sys/malloc.h>
44 #include <sys/sysctl.h>
47 #include <netncp/ncp.h>
48 #include <netncp/ncp_conn.h>
49 #include <netncp/ncp_sock.h>
50 #include <netncp/ncp_subr.h>
51 #include <netncp/ncp_rq.h>
52 #include <netncp/ncp_ncp.h>
53 #include <netncp/nwerror.h>
55 int ncp_debuglevel = 0;
57 struct callout_handle ncp_timer_handle;
58 static eventhandler_tag ncp_exit_tag;
60 static void ncp_at_exit(void *arg, struct proc *p);
61 static void ncp_timer(void *arg);
64 * duplicate string from user space. It should be very-very slow.
67 ncp_str_dup(char *s) {
72 if (copyin(p, &bt, 1)) return NULL;
76 MALLOC(p, char*, len, M_NCPDATA, M_WAITOK);
83 ncp_at_exit(void *arg, struct proc *p)
85 struct ncp_conn *ncp, *nncp;
89 FOREACH_THREAD_IN_PROC(p, td) {
90 if (ncp_conn_putprochandles(td) == 0)
93 ncp_conn_locklist(LK_EXCLUSIVE, td);
94 for (ncp = SLIST_FIRST(&conn_list); ncp; ncp = nncp) {
95 nncp = SLIST_NEXT(ncp, nc_next);
96 if (ncp_conn_lock(ncp, td, td->td_ucred,
97 NCPM_READ | NCPM_EXECUTE | NCPM_WRITE))
99 if (ncp_conn_free(ncp) != 0)
100 ncp_conn_unlock(ncp, td);
102 ncp_conn_unlocklist(td);
111 ncp_exit_tag = EVENTHANDLER_REGISTER(process_exit, ncp_at_exit, NULL,
112 EVENTHANDLER_PRI_ANY);
113 ncp_timer_handle = timeout(ncp_timer, NULL, NCP_TIMER_TICK);
122 error = ncp_conn_destroy();
125 untimeout(ncp_timer, NULL, ncp_timer_handle);
126 EVENTHANDLER_DEREGISTER(process_exit, ncp_exit_tag);
131 /* tick every second and check for watch dog packets and lost connections */
135 struct ncp_conn *conn;
137 if(ncp_conn_locklist(LK_SHARED | LK_NOWAIT, NULL) == 0) {
138 SLIST_FOREACH(conn, &conn_list, nc_next)
139 ncp_check_conn(conn);
140 ncp_conn_unlocklist(NULL);
142 ncp_timer_handle = timeout(ncp_timer, NULL, NCP_TIMER_TICK);