- Release bridge interface's serializer when configuring member interface
[dragonfly.git] / usr.sbin / ppp / id.c
blob154970657d5c907fb143137b0bd29fcfb39354d3
1 /*-
2 * Copyright (c) 1997 Brian Somers <brian@Awfulhak.org>
3 * All rights reserved.
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
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.
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
24 * SUCH DAMAGE.
26 * $FreeBSD: src/usr.sbin/ppp/id.c,v 1.18.2.3 2002/09/01 02:12:27 brian Exp $
27 * $DragonFly: src/usr.sbin/ppp/id.c,v 1.4 2005/11/24 23:42:54 swildner Exp $
30 #include <sys/param.h>
31 #include <sys/socket.h>
32 #include <sys/un.h>
34 #include <sys/ioctl.h>
35 #include <fcntl.h>
36 #ifndef NONETGRAPH
37 #include <netgraph.h>
38 #endif
39 #include <signal.h>
40 #include <stdarg.h>
41 #include <stdio.h>
42 #include <string.h>
43 #include <sysexits.h>
44 #if defined(__DragonFly__) && !defined(NOKLDLOAD)
45 #include <sys/linker.h>
46 #endif
47 #include <unistd.h>
48 #ifdef __OpenBSD__
49 #include <util.h>
50 #else
51 #include <libutil.h>
52 #endif
53 #include <utmp.h>
55 #include "log.h"
56 #include "main.h"
57 #include "id.h"
59 static int uid;
60 static int euid;
62 void
63 ID0init(void)
65 uid = getuid();
66 euid = geteuid();
69 static void
70 ID0setuser(void)
72 if (seteuid(uid) == -1) {
73 log_Printf(LogERROR, "ID0setuser: Unable to seteuid!\n");
74 AbortProgram(EX_NOPERM);
78 uid_t
79 ID0realuid(void)
81 return uid;
84 static void
85 ID0set0(void)
87 if (seteuid(euid) == -1) {
88 log_Printf(LogERROR, "ID0set0: Unable to seteuid!\n");
89 AbortProgram(EX_NOPERM);
93 int
94 ID0ioctl(int fd, unsigned long req, void *arg)
96 int ret;
98 ID0set0();
99 ret = ioctl(fd, req, arg);
100 log_Printf(LogID0, "%d = ioctl(%d, %lu, %p)\n", ret, fd, req, arg);
101 ID0setuser();
102 return ret;
106 ID0unlink(const char *name)
108 int ret;
110 ID0set0();
111 ret = unlink(name);
112 log_Printf(LogID0, "%d = unlink(\"%s\")\n", ret, name);
113 ID0setuser();
114 return ret;
118 ID0socket(int domain, int type, int protocol)
120 int ret;
122 ID0set0();
123 ret = socket(domain, type, protocol);
124 log_Printf(LogID0, "%d = socket(%d, %d, %d)\n", ret, domain, type, protocol);
125 ID0setuser();
126 return ret;
129 FILE *
130 ID0fopen(const char *path, const char *mode)
132 FILE *ret;
134 ID0set0();
135 ret = fopen(path, mode);
136 log_Printf(LogID0, "%p = fopen(\"%s\", \"%s\")\n", ret, path, mode);
137 ID0setuser();
138 return ret;
142 ID0open(const char *path, int flags, ...)
144 int ret;
145 va_list ap;
147 va_start(ap, flags);
148 ID0set0();
149 ret = open(path, flags, va_arg(ap, int));
150 log_Printf(LogID0, "%d = open(\"%s\", %d)\n", ret, path, flags);
151 ID0setuser();
152 va_end(ap);
153 return ret;
157 ID0write(int fd, const void *data, size_t len)
159 int ret;
161 ID0set0();
162 ret = write(fd, data, len);
163 log_Printf(LogID0, "%d = write(%d, data, %ld)\n", ret, fd, (long)len);
164 ID0setuser();
165 return ret;
169 ID0uu_lock(const char *basettyname)
171 int ret;
173 ID0set0();
174 ret = uu_lock(basettyname);
175 log_Printf(LogID0, "%d = uu_lock(\"%s\")\n", ret, basettyname);
176 ID0setuser();
177 return ret;
181 ID0uu_lock_txfr(const char *basettyname, pid_t newpid)
183 int ret;
185 ID0set0();
186 ret = uu_lock_txfr(basettyname, newpid);
187 log_Printf(LogID0, "%d = uu_lock_txfr(\"%s\", %ld)\n", ret, basettyname,
188 (long)newpid);
189 ID0setuser();
190 return ret;
194 ID0uu_unlock(const char *basettyname)
196 int ret;
198 ID0set0();
199 ret = uu_unlock(basettyname);
200 log_Printf(LogID0, "%d = uu_unlock(\"%s\")\n", ret, basettyname);
201 ID0setuser();
202 return ret;
205 void
206 ID0login(struct utmp *ut)
208 ID0set0();
209 if (logout(ut->ut_line)) {
210 log_Printf(LogID0, "logout(\"%s\")\n", ut->ut_line);
211 logwtmp(ut->ut_line, "", "");
212 log_Printf(LogID0, "logwtmp(\"%s\", \"\", \"\")\n", ut->ut_line);
214 login(ut);
215 log_Printf(LogID0, "login(\"%s\", \"%.*s\")\n",
216 ut->ut_line, (int)(sizeof ut->ut_name), ut->ut_name);
217 ID0setuser();
220 void
221 ID0logout(const char *device, int nologout)
223 struct utmp ut;
224 char ut_line[sizeof ut.ut_line + 1];
226 strncpy(ut_line, device, sizeof ut_line - 1);
227 ut_line[sizeof ut_line - 1] = '\0';
229 ID0set0();
230 if (nologout || logout(ut_line)) {
231 log_Printf(LogID0, "logout(\"%s\")\n", ut_line);
232 logwtmp(ut_line, "", "");
233 log_Printf(LogID0, "logwtmp(\"%s\", \"\", \"\")\n", ut_line);
234 } else
235 log_Printf(LogERROR, "ID0logout: No longer logged in on %s\n", ut_line);
236 ID0setuser();
240 ID0bind_un(int s, const struct sockaddr_un *name)
242 int result;
244 ID0set0();
245 result = bind(s, (const struct sockaddr *)name, sizeof *name);
246 log_Printf(LogID0, "%d = bind(%d, \"%s\", %d)\n",
247 result, s, name->sun_path, (int)sizeof(*name));
248 ID0setuser();
249 return result;
253 ID0connect_un(int s, const struct sockaddr_un *name)
255 int result;
257 ID0set0();
258 result = connect(s, (const struct sockaddr *)name, sizeof *name);
259 log_Printf(LogID0, "%d = connect(%d, \"%s\", %d)\n",
260 result, s, name->sun_path, (int)sizeof(*name));
261 ID0setuser();
262 return result;
266 ID0kill(pid_t pid, int sig)
268 int result;
270 ID0set0();
271 result = kill(pid, sig);
272 log_Printf(LogID0, "%d = kill(%ld, %d)\n", result, (long)pid, sig);
273 ID0setuser();
274 return result;
277 #if defined(__DragonFly__) && !defined(NOKLDLOAD)
279 ID0kldload(const char *dev)
281 int result;
283 ID0set0();
284 result = kldload(dev);
285 log_Printf(LogID0, "%d = kldload(\"%s\")\n", result, dev);
286 ID0setuser();
287 return result;
289 #endif
291 #ifndef NONETGRAPH
293 ID0NgMkSockNode(const char *name, int *cs, int *ds)
295 int result;
297 ID0set0();
298 result = NgMkSockNode(name, cs, ds);
299 log_Printf(LogID0, "%d = NgMkSockNode(\"%s\", &cs, &ds)\n",
300 result, name ? name : "");
301 ID0setuser();
302 return result;
304 #endif