File: | src/usr.sbin/rpc.lockd/lockd.c |
Warning: | line 87, column 4 Value stored to 'grace_period' is never read |
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1 | /* $OpenBSD: lockd.c,v 1.16 2023/03/08 04:43:15 guenther Exp $ */ |
2 | |
3 | /* |
4 | * Copyright (c) 1995 |
5 | * A.R. Gordon (andrew.gordon@net-tel.co.uk). All rights reserved. |
6 | * |
7 | * Redistribution and use in source and binary forms, with or without |
8 | * modification, are permitted provided that the following conditions |
9 | * are met: |
10 | * 1. Redistributions of source code must retain the above copyright |
11 | * notice, this list of conditions and the following disclaimer. |
12 | * 2. Redistributions in binary form must reproduce the above copyright |
13 | * notice, this list of conditions and the following disclaimer in the |
14 | * documentation and/or other materials provided with the distribution. |
15 | * 3. All advertising materials mentioning features or use of this software |
16 | * must display the following acknowledgement: |
17 | * This product includes software developed for the FreeBSD project |
18 | * 4. Neither the name of the author nor the names of any co-contributors |
19 | * may be used to endorse or promote products derived from this software |
20 | * without specific prior written permission. |
21 | * |
22 | * THIS SOFTWARE IS PROVIDED BY ANDREW GORDON AND CONTRIBUTORS ``AS IS'' AND |
23 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
24 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
25 | * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE |
26 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
27 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
28 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
29 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
30 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
31 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
32 | * SUCH DAMAGE. |
33 | * |
34 | */ |
35 | |
36 | #include <sys/socket.h> |
37 | #include <netinet/in.h> |
38 | #include <rpc/rpc.h> |
39 | #include <rpc/pmap_clnt.h> |
40 | #include <rpcsvc/sm_inter.h> |
41 | #include "nlm_prot.h" |
42 | #include <arpa/inet.h> |
43 | #include <stdio.h> |
44 | #include <syslog.h> |
45 | #include <stdlib.h> |
46 | #include <err.h> |
47 | #include <errno(*__errno()).h> |
48 | #include <signal.h> |
49 | #include <limits.h> |
50 | #include <string.h> |
51 | #include <unistd.h> |
52 | #include <netdb.h> |
53 | |
54 | #include "lockd.h" |
55 | |
56 | int debug_level = 0; /* 0 = no debugging syslog() calls */ |
57 | int _rpcsvcdirty = 0; |
58 | int grace_expired; |
59 | |
60 | void nlm_prog_0(struct svc_req *, SVCXPRT *); |
61 | void nlm_prog_1(struct svc_req *, SVCXPRT *); |
62 | void nlm_prog_3(struct svc_req *, SVCXPRT *); |
63 | void nlm_prog_4(struct svc_req *, SVCXPRT *); |
64 | |
65 | static void sigalarm_handler(int); |
66 | static void usage(void); |
67 | |
68 | int |
69 | main(int argc, char *argv[]) |
70 | { |
71 | SVCXPRT *transp; |
72 | const char *errstr; |
73 | int ch; |
74 | struct sigaction sigchild, sigalarm; |
75 | int grace_period = 30; |
76 | |
77 | while ((ch = getopt(argc, argv, "d:g:")) != (-1)) { |
78 | switch (ch) { |
79 | case 'd': |
80 | debug_level = strtonum(optarg, 1, INT_MAX0x7fffffff, &errstr); |
81 | if (errstr) { |
82 | usage(); |
83 | /* NOTREACHED */ |
84 | } |
85 | break; |
86 | case 'g': |
87 | grace_period = strtonum(optarg, 1, INT_MAX0x7fffffff, &errstr); |
Value stored to 'grace_period' is never read | |
88 | if (errstr) { |
89 | usage(); |
90 | /* NOTREACHED */ |
91 | } |
92 | break; |
93 | default: |
94 | usage(); |
95 | /* NOTREACHED */ |
96 | } |
97 | } |
98 | |
99 | (void) pmap_unset(NLM_PROG((u_long)100021), NLM_SM((u_long)0)); |
100 | (void) pmap_unset(NLM_PROG((u_long)100021), NLM_VERS((u_long)1)); |
101 | (void) pmap_unset(NLM_PROG((u_long)100021), NLM_VERSX((u_long)3)); |
102 | (void) pmap_unset(NLM_PROG((u_long)100021), NLM_VERS4((u_long)4)); |
103 | |
104 | transp = svcudp_create(RPC_ANYSOCK-1); |
105 | if (transp == NULL0) { |
106 | fprintf(stderr(&__sF[2]), "cannot create udp service.\n"); |
107 | exit(1); |
108 | } |
109 | if (!svc_register(transp, NLM_PROG((u_long)100021), NLM_SM((u_long)0), |
110 | (void (*) (struct svc_req *, SVCXPRT *)) nlm_prog_0, IPPROTO_UDP17)) { |
111 | fprintf(stderr(&__sF[2]), "unable to register (NLM_PROG, NLM_SM, udp).\n"); |
112 | exit(1); |
113 | } |
114 | if (!svc_register(transp, NLM_PROG((u_long)100021), NLM_VERS((u_long)1), |
115 | (void (*) (struct svc_req *, SVCXPRT *)) nlm_prog_1, IPPROTO_UDP17)) { |
116 | fprintf(stderr(&__sF[2]), "unable to register (NLM_PROG, NLM_VERS, udp).\n"); |
117 | exit(1); |
118 | } |
119 | if (!svc_register(transp, NLM_PROG((u_long)100021), NLM_VERSX((u_long)3), |
120 | (void (*) (struct svc_req *, SVCXPRT *)) nlm_prog_3, IPPROTO_UDP17)) { |
121 | fprintf(stderr(&__sF[2]), "unable to register (NLM_PROG, NLM_VERSX, udp).\n"); |
122 | exit(1); |
123 | } |
124 | if (!svc_register(transp, NLM_PROG((u_long)100021), NLM_VERS4((u_long)4), |
125 | (void (*) (struct svc_req *, SVCXPRT *)) nlm_prog_4, IPPROTO_UDP17)) { |
126 | fprintf(stderr(&__sF[2]), "unable to register (NLM_PROG, NLM_VERS4, udp).\n"); |
127 | exit(1); |
128 | } |
129 | transp = svctcp_create(RPC_ANYSOCK-1, 0, 0); |
130 | if (transp == NULL0) { |
131 | fprintf(stderr(&__sF[2]), "cannot create tcp service.\n"); |
132 | exit(1); |
133 | } |
134 | if (!svc_register(transp, NLM_PROG((u_long)100021), NLM_VERS((u_long)1), |
135 | (void (*) (struct svc_req *, SVCXPRT *)) nlm_prog_1, IPPROTO_TCP6)) { |
136 | fprintf(stderr(&__sF[2]), "unable to register (NLM_PROG, NLM_VERS, tcp).\n"); |
137 | exit(1); |
138 | } |
139 | if (!svc_register(transp, NLM_PROG((u_long)100021), NLM_VERSX((u_long)3), |
140 | (void (*) (struct svc_req *, SVCXPRT *)) nlm_prog_3, IPPROTO_TCP6)) { |
141 | fprintf(stderr(&__sF[2]), "unable to register (NLM_PROG, NLM_VERSX, tcp).\n"); |
142 | exit(1); |
143 | } |
144 | if (!svc_register(transp, NLM_PROG((u_long)100021), NLM_VERS4((u_long)4), |
145 | (void (*) (struct svc_req *, SVCXPRT *)) nlm_prog_4, IPPROTO_TCP6)) { |
146 | fprintf(stderr(&__sF[2]), "unable to register (NLM_PROG, NLM_VERS4, tcp).\n"); |
147 | exit(1); |
148 | } |
149 | |
150 | /* |
151 | * Note that it is NOT sensible to run this program from inetd - the |
152 | * protocol assumes that it will run immediately at boot time. |
153 | */ |
154 | if (daemon(0, 0) == -1) { |
155 | err(1, "cannot fork"); |
156 | /* NOTREACHED */ |
157 | } |
158 | |
159 | openlog("rpc.lockd", 0, LOG_DAEMON(3<<3)); |
160 | if (debug_level) |
161 | syslog(LOG_INFO6, "Starting, debug level %d", debug_level); |
162 | else |
163 | syslog(LOG_INFO6, "Starting"); |
164 | |
165 | sigchild.sa_handler__sigaction_u.__sa_handler = sigchild_handler; |
166 | sigemptyset(&sigchild.sa_mask); |
167 | sigchild.sa_flags = SA_RESTART0x0002; |
168 | if (sigaction(SIGCHLD20, &sigchild, NULL0) != 0) { |
169 | syslog(LOG_WARNING4, "sigaction(SIGCHLD) failed (%m)"); |
170 | exit(1); |
171 | } |
172 | sigalarm.sa_handler__sigaction_u.__sa_handler = sigalarm_handler; |
173 | sigemptyset(&sigalarm.sa_mask); |
174 | sigalarm.sa_flags = SA_RESETHAND0x0004; /* should only happen once */ |
175 | sigalarm.sa_flags |= SA_RESTART0x0002; |
176 | if (sigaction(SIGALRM14, &sigalarm, NULL0) != 0) { |
177 | syslog(LOG_WARNING4, "sigaction(SIGALRM) failed (%m)"); |
178 | exit(1); |
179 | } |
180 | grace_expired = 0; |
181 | if (alarm(10) == (unsigned int)-1) { |
182 | syslog(LOG_WARNING4, "alarm failed (%m)"); |
183 | exit(1); |
184 | } |
185 | |
186 | svc_run(); /* Should never return */ |
187 | return 1; |
188 | } |
189 | |
190 | static void |
191 | sigalarm_handler(int s) |
192 | { |
193 | grace_expired = 1; |
194 | } |
195 | |
196 | static void |
197 | usage() |
198 | { |
199 | errx(1, "usage: rpc.lockd [-d [debug_level]] [-g grace_period]"); |
200 | } |