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 /* remote host authorization check */
79 if (!check_default("statd", nfs_getrpccaller(transp), SM_PROG)) {
80 svcerr_auth (transp, AUTH_FAILED);
84 sm_prog_1 (rqstp, transp);
87 #define sm_prog_1 sm_prog_1_wrapper
91 statd_unregister(void) {
92 nfs_svc_unregister(SM_PROG, SM_VERS);
102 xlog_err ("Caught signal %d, un-registering and exiting", sig);
108 extern void my_svc_exit (void);
109 xlog(D_GENERAL, "Caught signal %d, re-notifying (state %d)", sig,
115 * Startup information.
117 static void log_modes(void)
119 char buf[128]; /* watch stack size... */
121 /* No flags = no message */
122 if (!run_mode) return;
125 sprintf(buf,"Flags: ");
126 if (run_mode & MODE_NODAEMON)
127 strcat(buf,"No-Daemon ");
128 if (run_mode & MODE_LOG_STDERR)
129 strcat(buf,"Log-STDERR ");
131 strcat(buf, "TI-RPC ");
138 * Since we do more than standard statd stuff, we might need to
139 * help the occasional admin.
144 fprintf(stderr,"usage: %s [options]\n", name_p);
145 fprintf(stderr," -h, -?, --help Print this help screen.\n");
146 fprintf(stderr," -F, --foreground Foreground (no-daemon mode)\n");
147 fprintf(stderr," -d, --no-syslog Verbose logging to stderr. Foreground mode only.\n");
148 fprintf(stderr," -p, --port Port to listen on\n");
149 fprintf(stderr," -o, --outgoing-port Port for outgoing connections\n");
150 fprintf(stderr," -V, -v, --version Display version information and exit.\n");
151 fprintf(stderr," -n, --name Specify a local hostname.\n");
152 fprintf(stderr," -P State directory path.\n");
153 fprintf(stderr," -N Run in notify only mode.\n");
154 fprintf(stderr," -L, --no-notify Do not perform any notification.\n");
155 fprintf(stderr," -H Specify a high-availability callout program.\n");
158 static const char *pidfile = "/var/run/rpc.statd.pid";
161 static void create_pidfile(void)
166 fp = fopen(pidfile, "w");
168 xlog_err("Opening %s failed: %m\n", pidfile);
169 fprintf(fp, "%d\n", getpid());
170 pidfd = dup(fileno(fp));
171 if (fclose(fp) < 0) {
172 xlog_warn("Flushing pid file failed: errno %d (%m)\n",
177 static void truncate_pidfile(void)
180 if (ftruncate(pidfd, 0) < 0) {
181 xlog_warn("truncating pid file failed: errno %d (%m)\n",
187 static void run_sm_notify(int outport)
193 av[ac++] = "/usr/sbin/sm-notify";
194 if (run_mode & MODE_NODAEMON)
197 sprintf(op, "-p%d", outport);
200 if (run_mode & STATIC_HOSTNAME) {
206 fprintf(stderr, "%s: failed to run %s\n", name_p, av[0]);
211 * Entry routine/main loop.
213 int main (int argc, char **argv)
218 int port = 0, out_port = 0;
221 int pipefds[2] = { -1, -1};
224 /* Default: daemon mode, no other options */
229 /* Set the basename */
230 if ((name_p = strrchr(argv[0],'/')) != NULL) {
239 /* Process command line switches */
240 while ((arg = getopt_long(argc, argv, "h?vVFNH:dn:p:o:P:L", longopts, NULL)) != EOF) {
242 case 'V': /* Version */
244 printf("%s version " VERSION "\n",name_p);
246 case 'F': /* Foreground/nodaemon mode */
247 run_mode |= MODE_NODAEMON;
250 run_mode |= MODE_NOTIFY_ONLY;
252 case 'L': /* Listen only */
253 run_mode |= MODE_NO_NOTIFY;
255 case 'd': /* No daemon only - log to stderr */
256 run_mode |= MODE_LOG_STDERR;
259 out_port = atoi(optarg);
260 if (out_port < 1 || out_port > 65535) {
261 fprintf(stderr, "%s: bad port number: %s\n",
269 if (port < 1 || port > 65535) {
270 fprintf(stderr, "%s: bad port number: %s\n",
276 case 'n': /* Specify local hostname */
277 run_mode |= STATIC_HOSTNAME;
278 MY_NAME = xstrdup(optarg);
281 if (!nsm_setup_pathnames(argv[0], optarg))
284 case 'H': /* PRC: specify the ha-callout program */
285 if ((ha_callout_prog = xstrdup(optarg)) == NULL) {
286 fprintf(stderr, "%s: xstrdup(%s) failed!\n",
291 case '?': /* heeeeeelllllllpppp? heh */
295 default: /* oh dear ... heh */
301 if (port == out_port && port != 0) {
302 fprintf(stderr, "Listening and outgoing ports cannot be the same!\n");
306 if (run_mode & MODE_NOTIFY_ONLY) {
307 fprintf(stderr, "%s: -N deprecated, consider using /usr/sbin/sm-notify directly\n",
309 run_sm_notify(out_port);
312 if (!(run_mode & MODE_NODAEMON)) {
313 run_mode &= ~MODE_LOG_STDERR; /* Never log to console in
317 if (getrlimit (RLIMIT_NOFILE, &rlim) != 0)
318 fprintf(stderr, "%s: getrlimit (RLIMIT_NOFILE) failed: %s\n",
319 argv [0], strerror(errno));
321 /* glibc sunrpc code dies if getdtablesize > FD_SETSIZE */
322 if (rlim.rlim_cur > FD_SETSIZE) {
323 rlim.rlim_cur = FD_SETSIZE;
325 if (setrlimit (RLIMIT_NOFILE, &rlim) != 0) {
326 fprintf(stderr, "%s: setrlimit (RLIMIT_NOFILE) failed: %s\n",
327 argv [0], strerror(errno));
334 /* LH - I _really_ need to update simulator... */
335 simulator (--argc, ++argv); /* simulator() does exit() */
338 if (!(run_mode & MODE_NODAEMON)) {
341 if (pipe(pipefds)<0) {
342 perror("statd: unable to create pipe");
345 if ((pid = fork ()) < 0) {
346 perror ("statd: Could not fork");
348 } else if (pid != 0) {
350 * Wait for status from child.
353 if (read(pipefds[0], &status, 1) != 1)
361 while (pipefds[1] <= 2) {
362 pipefds[1] = dup(pipefds[1]);
364 perror("statd: dup");
368 tempfd = open("/dev/null", O_RDWR);
379 if (run_mode & MODE_LOG_STDERR) {
382 xlog_config(D_ALL, 1);
385 xlog(L_NOTICE, "Version " VERSION " starting");
389 signal (SIGHUP, killer);
390 signal (SIGINT, killer);
391 signal (SIGTERM, killer);
392 /* PRC: trap SIGUSR1 to re-read notify list from disk */
393 signal(SIGUSR1, sigusr);
394 /* WARNING: the following works on Linux and SysV, but not BSD! */
395 signal(SIGCHLD, SIG_IGN);
397 * Ignore SIGPIPE to avoid statd dying when peers close their
398 * TCP connection while we're trying to reply to them.
400 signal(SIGPIPE, SIG_IGN);
403 atexit(truncate_pidfile);
405 if (! (run_mode & MODE_NO_NOTIFY))
406 switch (pid = fork()) {
408 run_sm_notify(out_port);
413 waitpid(pid, NULL, 0);
416 /* Make sure we have a privilege port for calling into the kernel */
417 if (statd_get_socket() < 0)
420 /* If sm-notify didn't take all the state files, load
421 * state information into our notify-list so we can
422 * pass on any SM_NOTIFY that arrives
426 MY_STATE = nsm_get_state(0);
429 xlog(D_GENERAL, "Local NSM state number: %d", MY_STATE);
430 nsm_update_kernel_state(MY_STATE);
434 * Clear old listeners while still root, to override any
435 * permission checking done by rpcbind.
442 if (!nsm_drop_privileges(pidfd))
447 * Create RPC listeners after dropping privileges. This permits
448 * statd to unregister its own listeners when it exits.
450 if (nfs_svc_create("statd", SM_PROG, SM_VERS, sm_prog_1, port) == 0) {
451 xlog(L_ERROR, "failed to create RPC listeners, exiting");
454 atexit(statd_unregister);
456 /* If we got this far, we have successfully started, so notify parent */
457 if (pipefds[1] > 0) {
459 if (write(pipefds[1], &status, 1) != 1) {
460 xlog_warn("writing to parent pipe failed: errno %d (%s)\n",
461 errno, strerror(errno));
469 * Handle incoming requests: SM_NOTIFY socket requests, as
470 * well as callbacks from lockd.
472 my_svc_run(); /* I rolled my own, Olaf made it better... */
474 /* Only get here when simulating a crash so we should probably
475 * start sm-notify running again. As we have already dropped
476 * privileges, this might not work, but I don't think
477 * responding to SM_SIMU_CRASH is an important use cases to
480 if (! (run_mode & MODE_NO_NOTIFY))
481 switch (pid = fork()) {
483 run_sm_notify(out_port);
488 waitpid(pid, NULL, 0);