2 * Copyright (C) 1995, 1997-1999 Jeffrey A. Uphoff
3 * Modified by Olaf Kirch, Oct. 1996.
4 * Modified by H.J. Lu, 1998.
5 * Modified by L. Hohberger of Mission Critical Linux, 2000.
23 #include <rpc/pmap_clnt.h>
25 #include <sys/resource.h>
33 /* Socket operations */
34 #include <sys/types.h>
35 #include <sys/socket.h>
37 int run_mode = 0; /* foreground logging mode */
39 /* LH - I had these local to main, but it seemed silly to have
40 * two copies of each - one in main(), one static in log.c...
41 * It also eliminates the 256-char static in log.c */
42 static char *name_p = NULL;
44 /* PRC: a high-availability callout program can be specified with -H
45 * When this is done, the program will receive callouts whenever clients
46 * are added or deleted to the notify list */
47 char *ha_callout_prog = NULL;
49 static struct option longopts[] =
51 { "foreground", 0, 0, 'F' },
52 { "no-syslog", 0, 0, 'd' },
53 { "help", 0, 0, 'h' },
54 { "version", 0, 0, 'v' },
55 { "outgoing-port", 1, 0, 'o' },
56 { "port", 1, 0, 'p' },
57 { "name", 1, 0, 'n' },
58 { "state-directory-path", 1, 0, 'P' },
59 { "notify-mode", 0, 0, 'N' },
60 { "ha-callout", 1, 0, 'H' },
61 { "no-notify", 0, 0, 'L' },
65 extern void sm_prog_1 (struct svc_req *, register SVCXPRT *);
68 extern void simulator (int, char **);
72 #ifdef HAVE_TCP_WRAPPER
73 #include "tcpwrapper.h"
76 sm_prog_1_wrapper (struct svc_req *rqstp, register SVCXPRT *transp)
78 struct sockaddr_in *sin = nfs_getrpccaller_in(transp);
80 /* remote host authorization check */
81 if (sin->sin_family == AF_INET &&
82 !check_default("statd", sin, rqstp->rq_proc, SM_PROG)) {
83 svcerr_auth (transp, AUTH_FAILED);
87 sm_prog_1 (rqstp, transp);
90 #define sm_prog_1 sm_prog_1_wrapper
99 pmap_unset (SM_PROG, SM_VERS);
100 xlog_err ("Caught signal %d, un-registering and exiting", sig);
106 extern void my_svc_exit (void);
107 xlog(D_GENERAL, "Caught signal %d, re-notifying (state %d)", sig,
113 * Startup information.
115 static void log_modes(void)
117 char buf[128]; /* watch stack size... */
119 /* No flags = no message */
120 if (!run_mode) return;
123 sprintf(buf,"Flags: ");
124 if (run_mode & MODE_NODAEMON)
125 strcat(buf,"No-Daemon ");
126 if (run_mode & MODE_LOG_STDERR)
127 strcat(buf,"Log-STDERR ");
133 * Since we do more than standard statd stuff, we might need to
134 * help the occasional admin.
139 fprintf(stderr,"usage: %s [options]\n", name_p);
140 fprintf(stderr," -h, -?, --help Print this help screen.\n");
141 fprintf(stderr," -F, --foreground Foreground (no-daemon mode)\n");
142 fprintf(stderr," -d, --no-syslog Verbose logging to stderr. Foreground mode only.\n");
143 fprintf(stderr," -p, --port Port to listen on\n");
144 fprintf(stderr," -o, --outgoing-port Port for outgoing connections\n");
145 fprintf(stderr," -V, -v, --version Display version information and exit.\n");
146 fprintf(stderr," -n, --name Specify a local hostname.\n");
147 fprintf(stderr," -P State directory path.\n");
148 fprintf(stderr," -N Run in notify only mode.\n");
149 fprintf(stderr," -L, --no-notify Do not perform any notification.\n");
150 fprintf(stderr," -H Specify a high-availability callout program.\n");
153 static const char *pidfile = "/var/run/rpc.statd.pid";
156 static void create_pidfile(void)
161 fp = fopen(pidfile, "w");
163 xlog_err("Opening %s failed: %m\n", pidfile);
164 fprintf(fp, "%d\n", getpid());
165 pidfd = dup(fileno(fp));
166 if (fclose(fp) < 0) {
167 xlog_warn("Flushing pid file failed: errno %d (%m)\n",
172 static void truncate_pidfile(void)
175 if (ftruncate(pidfd, 0) < 0) {
176 xlog_warn("truncating pid file failed: errno %d (%m)\n",
182 static void run_sm_notify(int outport)
188 av[ac++] = "/usr/sbin/sm-notify";
189 if (run_mode & MODE_NODAEMON)
192 sprintf(op, "-p%d", outport);
195 if (run_mode & STATIC_HOSTNAME) {
201 fprintf(stderr, "%s: failed to run %s\n", name_p, av[0]);
206 * Entry routine/main loop.
208 int main (int argc, char **argv)
213 int port = 0, out_port = 0;
216 int pipefds[2] = { -1, -1};
219 /* Default: daemon mode, no other options */
224 /* Set the basename */
225 if ((name_p = strrchr(argv[0],'/')) != NULL) {
234 /* Process command line switches */
235 while ((arg = getopt_long(argc, argv, "h?vVFNH:dn:p:o:P:L", longopts, NULL)) != EOF) {
237 case 'V': /* Version */
239 printf("%s version " VERSION "\n",name_p);
241 case 'F': /* Foreground/nodaemon mode */
242 run_mode |= MODE_NODAEMON;
245 run_mode |= MODE_NOTIFY_ONLY;
247 case 'L': /* Listen only */
248 run_mode |= MODE_NO_NOTIFY;
250 case 'd': /* No daemon only - log to stderr */
251 run_mode |= MODE_LOG_STDERR;
254 out_port = atoi(optarg);
255 if (out_port < 1 || out_port > 65535) {
256 fprintf(stderr, "%s: bad port number: %s\n",
264 if (port < 1 || port > 65535) {
265 fprintf(stderr, "%s: bad port number: %s\n",
271 case 'n': /* Specify local hostname */
272 run_mode |= STATIC_HOSTNAME;
273 MY_NAME = xstrdup(optarg);
276 if (!nsm_setup_pathnames(argv[0], optarg))
279 case 'H': /* PRC: specify the ha-callout program */
280 if ((ha_callout_prog = xstrdup(optarg)) == NULL) {
281 fprintf(stderr, "%s: xstrdup(%s) failed!\n",
286 case '?': /* heeeeeelllllllpppp? heh */
290 default: /* oh dear ... heh */
296 if (port == out_port && port != 0) {
297 fprintf(stderr, "Listening and outgoing ports cannot be the same!\n");
301 if (run_mode & MODE_NOTIFY_ONLY) {
302 fprintf(stderr, "%s: -N deprecated, consider using /usr/sbin/sm-notify directly\n",
304 run_sm_notify(out_port);
307 if (!(run_mode & MODE_NODAEMON)) {
308 run_mode &= ~MODE_LOG_STDERR; /* Never log to console in
312 if (getrlimit (RLIMIT_NOFILE, &rlim) != 0)
313 fprintf(stderr, "%s: getrlimit (RLIMIT_NOFILE) failed: %s\n",
314 argv [0], strerror(errno));
316 /* glibc sunrpc code dies if getdtablesize > FD_SETSIZE */
317 if (rlim.rlim_cur > FD_SETSIZE) {
318 rlim.rlim_cur = FD_SETSIZE;
320 if (setrlimit (RLIMIT_NOFILE, &rlim) != 0) {
321 fprintf(stderr, "%s: setrlimit (RLIMIT_NOFILE) failed: %s\n",
322 argv [0], strerror(errno));
329 /* LH - I _really_ need to update simulator... */
330 simulator (--argc, ++argv); /* simulator() does exit() */
333 if (!(run_mode & MODE_NODAEMON)) {
336 if (pipe(pipefds)<0) {
337 perror("statd: unable to create pipe");
340 if ((pid = fork ()) < 0) {
341 perror ("statd: Could not fork");
343 } else if (pid != 0) {
345 * Wait for status from child.
348 if (read(pipefds[0], &status, 1) != 1)
356 while (pipefds[1] <= 2) {
357 pipefds[1] = dup(pipefds[1]);
359 perror("statd: dup");
363 tempfd = open("/dev/null", O_RDWR);
374 if (run_mode & MODE_LOG_STDERR) {
377 xlog_config(D_ALL, 1);
380 xlog(L_NOTICE, "Version " VERSION " starting");
384 signal (SIGHUP, killer);
385 signal (SIGINT, killer);
386 signal (SIGTERM, killer);
387 /* PRC: trap SIGUSR1 to re-read notify list from disk */
388 signal(SIGUSR1, sigusr);
389 /* WARNING: the following works on Linux and SysV, but not BSD! */
390 signal(SIGCHLD, SIG_IGN);
392 * Ignore SIGPIPE to avoid statd dying when peers close their
393 * TCP connection while we're trying to reply to them.
395 signal(SIGPIPE, SIG_IGN);
398 atexit(truncate_pidfile);
400 if (! (run_mode & MODE_NO_NOTIFY))
401 switch (pid = fork()) {
403 run_sm_notify(out_port);
408 waitpid(pid, NULL, 0);
411 /* Make sure we have a privilege port for calling into the kernel */
412 if (statd_get_socket() < 0)
415 /* If sm-notify didn't take all the state files, load
416 * state information into our notify-list so we can
417 * pass on any SM_NOTIFY that arrives
421 MY_STATE = nsm_get_state(0);
424 xlog(D_GENERAL, "Local NSM state number: %d", MY_STATE);
425 nsm_update_kernel_state(MY_STATE);
427 pmap_unset (SM_PROG, SM_VERS);
429 /* this registers both UDP and TCP services */
430 rpc_init("statd", SM_PROG, SM_VERS, sm_prog_1, port);
432 /* If we got this far, we have successfully started, so notify parent */
433 if (pipefds[1] > 0) {
435 if (write(pipefds[1], &status, 1) != 1) {
436 xlog_warn("writing to parent pipe failed: errno %d (%s)\n",
437 errno, strerror(errno));
443 if (!nsm_drop_privileges(pidfd))
448 * Handle incoming requests: SM_NOTIFY socket requests, as
449 * well as callbacks from lockd.
451 my_svc_run(); /* I rolled my own, Olaf made it better... */
453 /* Only get here when simulating a crash so we should probably
454 * start sm-notify running again. As we have already dropped
455 * privileges, this might not work, but I don't think
456 * responding to SM_SIMU_CRASH is an important use cases to
459 if (! (run_mode & MODE_NO_NOTIFY))
460 switch (pid = fork()) {
462 run_sm_notify(out_port);
467 waitpid(pid, NULL, 0);