| Start/ | End/ | |||
| True | False | - | Line | Source |
| 1 | /* | |||
| 2 | * linux/fs/lockd/svc.c | |||
| 3 | * | |||
| 4 | * This is the central lockd service. | |||
| 5 | * | |||
| 6 | * FIXME: Separate the lockd NFS server functionality from the lockd NFS | |||
| 7 | * client functionality. Oh why didn't Sun create two separate | |||
| 8 | * services in the first place? | |||
| 9 | * | |||
| 10 | * Authors: Olaf Kirch (okir@monad.swb.de) | |||
| 11 | * | |||
| 12 | * Copyright (C) 1995, 1996 Olaf Kirch <okir@monad.swb.de> | |||
| 13 | */ | |||
| 14 | ||||
| 15 | #include <linux/config.h> | |||
| 16 | #include <linux/module.h> | |||
| 17 | #include <linux/init.h> | |||
| 18 | #include <linux/sysctl.h> | |||
| 19 | #include <linux/moduleparam.h> | |||
| 20 | ||||
| 21 | #include <linux/sched.h> | |||
| 22 | #include <linux/errno.h> | |||
| 23 | #include <linux/in.h> | |||
| 24 | #include <linux/uio.h> | |||
| 25 | #include <linux/slab.h> | |||
| 26 | #include <linux/smp.h> | |||
| 27 | #include <linux/smp_lock.h> | |||
| 28 | ||||
| 29 | #include <linux/sunrpc/types.h> | |||
| 30 | #include <linux/sunrpc/stats.h> | |||
| 31 | #include <linux/sunrpc/clnt.h> | |||
| 32 | #include <linux/sunrpc/svc.h> | |||
| 33 | #include <linux/sunrpc/svcsock.h> | |||
| 34 | #include <linux/lockd/lockd.h> | |||
| 35 | #include <linux/nfs.h> | |||
| 36 | ||||
| 37 | #define NLMDBG_FACILITY NLMDBG_SVC | |||
| 38 | #define LOCKD_BUFSIZE (1024 + NLMSVC_XDRSIZE) | |||
| 39 | #define ALLOWED_SIGS (sigmask(SIGKILL)) | |||
| 40 | ||||
| 41 | static struct svc_program nlmsvc_program; | |||
| 42 | ||||
| 43 | struct nlmsvc_binding * nlmsvc_ops; | |||
| 44 | EXPORT_SYMBOL(nlmsvc_ops); | |||
| 45 | ||||
| 46 | static DECLARE_MUTEX(nlmsvc_sema); | |||
| 47 | static unsigned int nlmsvc_users; | |||
| 48 | static pid_t nlmsvc_pid; | |||
| 49 | int nlmsvc_grace_period; | |||
| 50 | unsigned long nlmsvc_timeout; | |||
| 51 | ||||
| 52 | static DECLARE_MUTEX_LOCKED(lockd_start); | |||
| 53 | static DECLARE_WAIT_QUEUE_HEAD(lockd_exit); | |||
| 54 | ||||
| 55 | /* | |||
| 56 | * These can be set at insmod time (useful for NFS as root filesystem), | |||
| 57 | * and also changed through the sysctl interface. -- Jamie Lokier, Aug 2003 | |||
| 58 | */ | |||
| 59 | static unsigned long nlm_grace_period; | |||
| 60 | static unsigned long nlm_timeout = LOCKD_DFLT_TIMEO; | |||
| 61 | static int nlm_udpport, nlm_tcpport; | |||
| 62 | ||||
| 63 | /* | |||
| 64 | * Constants needed for the sysctl interface. | |||
| 65 | */ | |||
| 66 | static const unsigned long nlm_grace_period_min = 0; | |||
| 67 | static const unsigned long nlm_grace_period_max = 240; | |||
| 68 | static const unsigned long nlm_timeout_min = 3; | |||
| 69 | static const unsigned long nlm_timeout_max = 20; | |||
| 70 | static const int nlm_port_min = 0, nlm_port_max = 65535; | |||
| 71 | ||||
| 72 | static struct ctl_table_header * nlm_sysctl_table; | |||
| 73 | ||||
| 0 | 0 | - | 74 | static unsigned long set_grace_period(void) |
| 75 | { | |||
| 76 | unsigned long grace_period; | |||
| 77 | ||||
| 78 | /* Note: nlm_timeout should always be nonzero */ | |||
| 0 | 0 | - | 79 | if (nlm_grace_period) |
| 80 | grace_period = ((nlm_grace_period + nlm_timeout - 1) | |||
| 81 | / nlm_timeout) * nlm_timeout * HZ; | |||
| 82 | else | |||
| 83 | grace_period = nlm_timeout * 5 * HZ; | |||
| 84 | nlmsvc_grace_period = 1; | |||
| 0 | - | 85 | return grace_period + jiffies; | |
| 86 | } | |||
| 87 | ||||
| 0 | 0 | - | 88 | static inline void clear_grace_period(void) |
| 89 | { | |||
| 90 | nlmsvc_grace_period = 0; | |||
| 91 | } | |||
| 92 | ||||
| 93 | /* | |||
| 94 | * This is the lockd kernel thread | |||
| 95 | */ | |||
| 96 | static void | |||
| 0 | 0 | - | 97 | lockd(struct svc_rqst *rqstp) |
| 98 | { | |||
| 99 | struct svc_serv *serv = rqstp->rq_server; | |||
| 100 | int err = 0; | |||
| 101 | unsigned long grace_period_expire; | |||
| 102 | ||||
| 103 | /* Lock module and set up kernel thread */ | |||
| 104 | /* lockd_up is waiting for us to startup, so will | |||
| 105 | * be holding a reference to this module, so it | |||
| 106 | * is safe to just claim another reference | |||
| 107 | */ | |||
| 108 | __module_get(THIS_MODULE); | |||
| 109 | lock_kernel(); | |||
| 0 | 0 | - | 109 | do-while (0) |
| 110 | ||||
| 111 | /* | |||
| 112 | * Let our maker know we're running. | |||
| 113 | */ | |||
| 114 | nlmsvc_pid = current->pid; | |||
| 115 | up(&lockd_start); | |||
| 116 | ||||
| 117 | daemonize("lockd"); | |||
| 118 | ||||
| 119 | /* Process request with signals blocked, but allow SIGKILL. */ | |||
| 120 | allow_signal(SIGKILL); | |||
| 121 | ||||
| 122 | /* kick rpciod */ | |||
| 123 | rpciod_up(); | |||
| 124 | ||||
| 125 | dprintk("NFS locking service started (ver " LOCKD_VERSION ").\n"); | |||
| 0 | 0 | - | 125 | if (__builtin_expect ( ! ! ( nlm_debug & 0x0.. |
| 0 | 0 | - | 125 | do-while (0) |
| 126 | ||||
| 0 | 0 | - | 127 | if (!nlm_timeout) |
| 128 | nlm_timeout = LOCKD_DFLT_TIMEO; | |||
| 129 | nlmsvc_timeout = nlm_timeout * HZ; | |||
| 130 | ||||
| 131 | grace_period_expire = set_grace_period(); | |||
| 132 | ||||
| 133 | /* | |||
| 134 | * The main request loop. We don't terminate until the last | |||
| 135 | * NFS mount or NFS daemon has gone away, and we've been sent a | |||
| 136 | * signal, or else another process has taken over our job. | |||
| 137 | */ | |||
| 0 | 0 | - | 138 | while ((nlmsvc_users || !signalled()) && nlmsvc_pid == current->pid) { |
| 0 | - | 138 | (T || !(_)) && T | |
| 0 | - | 138 | (F || !(F)) && T | |
| 0 | - | 138 | (T || !(_)) && F | |
| 0 | - | 138 | (F || !(T)) && _ | |
| 0 | - | 138 | (F || !(F)) && F | |
| 139 | long timeout = MAX_SCHEDULE_TIMEOUT; | |||
| 140 | ||||
| 0 | 0 | - | 141 | if (signalled()) { |
| 142 | flush_signals(current); | |||
| 0 | 0 | - | 143 | if (nlmsvc_ops) { |
| 144 | nlmsvc_invalidate_all(); | |||
| 145 | grace_period_expire = set_grace_period(); | |||
| 146 | } | |||
| 147 | } | |||
| 148 | ||||
| 149 | /* | |||
| 150 | * Retry any blocked locks that have been notified by | |||
| 151 | * the VFS. Don't do this during grace period. | |||
| 152 | * (Theoretically, there shouldn't even be blocked locks | |||
| 153 | * during grace period). | |||
| 154 | */ | |||
| 0 | 0 | - | 155 | if (!nlmsvc_grace_period) { |
| 156 | timeout = nlmsvc_retry_blocked(); | |||
| 0 | 0 | - | 157 | } else if (time_before(grace_period_expire, jiffies)) |
| 0 | - | 157 | ((T) && (T) && (T)) | |
| 0 | - | 157 | ((T) && (T) && (F)) | |
| 0 | - | 157 | ((T) && (F) && (_)) | |
| 0 | - | 157 | ((F) && (_) && (_)) | |
| 158 | clear_grace_period(); | |||
| 159 | ||||
| 160 | /* | |||
| 161 | * Find a socket with data available and call its | |||
| 162 | * recvfrom routine. | |||
| 163 | */ | |||
| 164 | err = svc_recv(serv, rqstp, timeout); | |||
| 0 | 0 | - | 165 | if (err == -EAGAIN || err == -EINTR) |
| 0 | - | 165 | T || _ | |
| 0 | - | 165 | F || T | |
| 0 | - | 165 | F || F | |
| 0 | - | 166 | continue; | |
| 0 | 0 | - | 167 | if (err < 0) { |
| 168 | printk(KERN_WARNING | |||
| 169 | "lockd: terminating on error %d\n", | |||
| 170 | -err); | |||
| 0 | - | 171 | break; | |
| 172 | } | |||
| 173 | ||||
| 174 | dprintk("lockd: request from %08x\n", | |||
| 0 | 0 | - | 174 | if (__builtin_expect ( ! ! ( nlm_debug & 0.. |
| 0 | 0 | - | 174 | ternary-?: __builtin_constant_p ( ( __u3.. |
| 0 | 0 | - | 174 | do-while (0) |
| 175 | (unsigned)ntohl(rqstp->rq_addr.sin_addr.s_addr)); | |||
| 176 | ||||
| 177 | svc_process(serv, rqstp); | |||
| 178 | ||||
| 179 | } | |||
| 180 | ||||
| 181 | flush_signals(current); | |||
| 182 | ||||
| 183 | /* | |||
| 184 | * Check whether there's a new lockd process before | |||
| 185 | * shutting down the hosts and clearing the slot. | |||
| 186 | */ | |||
| 0 | 0 | - | 187 | if (!nlmsvc_pid || current->pid == nlmsvc_pid) { |
| 0 | - | 187 | T || _ | |
| 0 | - | 187 | F || T | |
| 0 | - | 187 | F || F | |
| 0 | 0 | - | 188 | if (nlmsvc_ops) |
| 189 | nlmsvc_invalidate_all(); | |||
| 190 | nlm_shutdown_hosts(); | |||
| 191 | nlmsvc_pid = 0; | |||
| 192 | } else | |||
| 193 | printk(KERN_DEBUG | |||
| 194 | "lockd: new process, skipping host shutdown\n"); | |||
| 195 | wake_up(&lockd_exit); | |||
| 196 | ||||
| 197 | /* Exit the RPC thread */ | |||
| 198 | svc_exit_thread(rqstp); | |||
| 199 | ||||
| 200 | /* release rpciod */ | |||
| 201 | rpciod_down(); | |||
| 202 | ||||
| 203 | /* Release module */ | |||
| 204 | unlock_kernel(); | |||
| 0 | 0 | - | 204 | do-while (0) |
| 205 | module_put_and_exit(0); | |||
| 206 | } | |||
| 207 | ||||
| 208 | /* | |||
| 209 | * Bring up the lockd process if it's not already up. | |||
| 210 | */ | |||
| 211 | int | |||
| 0 | 0 | - | 212 | lockd_up(void) |
| 213 | { | |||
| 214 | static int warned; | |||
| 215 | struct svc_serv * serv; | |||
| 216 | int error = 0; | |||
| 217 | ||||
| 218 | down(&nlmsvc_sema); | |||
| 219 | /* | |||
| 220 | * Unconditionally increment the user count ... this is | |||
| 221 | * the number of clients who _want_ a lockd process. | |||
| 222 | */ | |||
| 223 | nlmsvc_users++; | |||
| 224 | /* | |||
| 225 | * Check whether we're already up and running. | |||
| 226 | */ | |||
| 0 | 0 | - | 227 | if (nlmsvc_pid) |
| 0 | - | 228 | goto out; | |
| 229 | ||||
| 230 | /* | |||
| 231 | * Sanity check: if there's no pid, | |||
| 232 | * we should be the first user ... | |||
| 233 | */ | |||
| 0 | 0 | - | 234 | if (nlmsvc_users > 1) |
| 235 | printk(KERN_WARNING | |||
| 236 | "lockd_up: no pid, %d users??\n", nlmsvc_users); | |||
| 237 | ||||
| 238 | error = -ENOMEM; | |||
| 239 | serv = svc_create(&nlmsvc_program, LOCKD_BUFSIZE); | |||
| 0 | 0 | - | 240 | if (!serv) { |
| 241 | printk(KERN_WARNING "lockd_up: create service failed\n"); | |||
| 0 | - | 242 | goto out; | |
| 243 | } | |||
| 244 | ||||
| 245 | if ((error = svc_makesock(serv, IPPROTO_UDP, nlm_udpport)) < 0 | |||
| 246 | #ifdef CONFIG_NFSD_TCP | |||
| 0 | 0 | - | 247 | || (error = svc_makesock(serv, IPPROTO_TCP, nlm_tcpport)) < 0 |
| 0 | - | 247 | T || _ | |
| 0 | - | 247 | F || T | |
| 0 | - | 247 | F || F | |
| 248 | #endif | |||
| 249 | ) { | |||
| 0 | 0 | - | 250 | if (warned++ == 0) |
| 251 | printk(KERN_WARNING | |||
| 252 | "lockd_up: makesock failed, error=%d\n", error); | |||
| 0 | - | 253 | goto destroy_and_out; | |
| 254 | } | |||
| 255 | warned = 0; | |||
| 256 | ||||
| 257 | /* | |||
| 258 | * Create the kernel thread and wait for it to start. | |||
| 259 | */ | |||
| 260 | error = svc_create_thread(lockd, serv); | |||
| 0 | 0 | - | 261 | if (error) { |
| 262 | printk(KERN_WARNING | |||
| 263 | "lockd_up: create thread failed, error=%d\n", error); | |||
| 0 | - | 264 | goto destroy_and_out; | |
| 265 | } | |||
| 266 | down(&lockd_start); | |||
| 267 | ||||
| 268 | /* | |||
| 269 | * Note: svc_serv structures have an initial use count of 1, | |||
| 270 | * so we exit through here on both success and failure. | |||
| 271 | */ | |||
| 272 | destroy_and_out: | |||
| 273 | svc_destroy(serv); | |||
| 274 | out: | |||
| 275 | up(&nlmsvc_sema); | |||
| 0 | - | 276 | return error; | |
| 277 | } | |||
| 278 | EXPORT_SYMBOL(lockd_up); | |||
| 279 | ||||
| 280 | /* | |||
| 281 | * Decrement the user count and bring down lockd if we're the last. | |||
| 282 | */ | |||
| 283 | void | |||
| 0 | 0 | - | 284 | lockd_down(void) |
| 285 | { | |||
| 286 | static int warned; | |||
| 287 | ||||
| 288 | down(&nlmsvc_sema); | |||
| 0 | 0 | - | 289 | if (nlmsvc_users) { |
| 0 | 0 | - | 290 | if (--nlmsvc_users) |
| 0 | - | 291 | goto out; | |
| 292 | } else | |||
| 293 | printk(KERN_WARNING "lockd_down: no users! pid=%d\n", nlmsvc_pid); | |||
| 294 | ||||
| 0 | 0 | - | 295 | if (!nlmsvc_pid) { |
| 0 | 0 | - | 296 | if (warned++ == 0) |
| 297 | printk(KERN_WARNING "lockd_down: no lockd running.\n"); | |||
| 0 | - | 298 | goto out; | |
| 299 | } | |||
| 300 | warned = 0; | |||
| 301 | ||||
| 302 | kill_proc(nlmsvc_pid, SIGKILL, 1); | |||
| 303 | /* | |||
| 304 | * Wait for the lockd process to exit, but since we're holding | |||
| 305 | * the lockd semaphore, we can't wait around forever ... | |||
| 306 | */ | |||
| 307 | clear_thread_flag(TIF_SIGPENDING); | |||
| 308 | interruptible_sleep_on_timeout(&lockd_exit, HZ); | |||
| 0 | 0 | - | 309 | if (nlmsvc_pid) { |
| 310 | printk(KERN_WARNING | |||
| 311 | "lockd_down: lockd failed to exit, clearing pid\n"); | |||
| 312 | nlmsvc_pid = 0; | |||
| 313 | } | |||
| 314 | spin_lock_irq(¤t->sighand->siglock); | |||
| 314 | do | |||
| 314 | do | |||
| 0 | 0 | - | 314 | do-while (0) |
| 0 | 0 | - | 314 | do-while (0) |
| 0 | 0 | - | 314 | do-while (0) |
| 315 | recalc_sigpending(); | |||
| 316 | spin_unlock_irq(¤t->sighand->siglock); | |||
| 316 | do | |||
| 316 | do | |||
| 0 | 0 | - | 316 | do-while (0) |
| 0 | 0 | - | 316 | do-while (0) |
| 0 | 0 | - | 316 | do-while (0) |
| 317 | out: | |||
| 318 | up(&nlmsvc_sema); | |||
| 319 | } | |||
| 320 | EXPORT_SYMBOL(lockd_down); | |||
| 321 | ||||
| 322 | /* | |||
| 323 | * Sysctl parameters (same as module parameters, different interface). | |||
| 324 | */ | |||
| 325 | ||||
| 326 | /* Something that isn't CTL_ANY, CTL_NONE or a value that may clash. */ | |||
| 327 | #define CTL_UNNUMBERED -2 | |||
| 328 | ||||
| 329 | static ctl_table nlm_sysctls[] = { | |||
| 330 | { | |||
| 331 | .ctl_name = CTL_UNNUMBERED, | |||
| 332 | .procname = "nlm_grace_period", | |||
| 333 | .data = &nlm_grace_period, | |||
| 334 | .maxlen = sizeof(unsigned long), | |||
| 335 | .mode = 0644, | |||
| 336 | .proc_handler = &proc_doulongvec_minmax, | |||
| 337 | .extra1 = (unsigned long *) &nlm_grace_period_min, | |||
| 338 | .extra2 = (unsigned long *) &nlm_grace_period_max, | |||
| 339 | }, | |||
| 340 | { | |||
| 341 | .ctl_name = CTL_UNNUMBERED, | |||
| 342 | .procname = "nlm_timeout", | |||
| 343 | .data = &nlm_timeout, | |||
| 344 | .maxlen = sizeof(unsigned long), | |||
| 345 | .mode = 0644, | |||
| 346 | .proc_handler = &proc_doulongvec_minmax, | |||
| 347 | .extra1 = (unsigned long *) &nlm_timeout_min, | |||
| 348 | .extra2 = (unsigned long *) &nlm_timeout_max, | |||
| 349 | }, | |||
| 350 | { | |||
| 351 | .ctl_name = CTL_UNNUMBERED, | |||
| 352 | .procname = "nlm_udpport", | |||
| 353 | .data = &nlm_udpport, | |||
| 354 | .maxlen = sizeof(int), | |||
| 355 | .mode = 0644, | |||
| 356 | .proc_handler = &proc_dointvec_minmax, | |||
| 357 | .extra1 = (int *) &nlm_port_min, | |||
| 358 | .extra2 = (int *) &nlm_port_max, | |||
| 359 | }, | |||
| 360 | { | |||
| 361 | .ctl_name = CTL_UNNUMBERED, | |||
| 362 | .procname = "nlm_tcpport", | |||
| 363 | .data = &nlm_tcpport, | |||
| 364 | .maxlen = sizeof(int), | |||
| 365 | .mode = 0644, | |||
| 366 | .proc_handler = &proc_dointvec_minmax, | |||
| 367 | .extra1 = (int *) &nlm_port_min, | |||
| 368 | .extra2 = (int *) &nlm_port_max, | |||
| 369 | }, | |||
| 370 | { .ctl_name = 0 } | |||
| 371 | }; | |||
| 372 | ||||
| 373 | static ctl_table nlm_sysctl_dir[] = { | |||
| 374 | { | |||
| 375 | .ctl_name = CTL_UNNUMBERED, | |||
| 376 | .procname = "nfs", | |||
| 377 | .mode = 0555, | |||
| 378 | .child = nlm_sysctls, | |||
| 379 | }, | |||
| 380 | { .ctl_name = 0 } | |||
| 381 | }; | |||
| 382 | ||||
| 383 | static ctl_table nlm_sysctl_root[] = { | |||
| 384 | { | |||
| 385 | .ctl_name = CTL_FS, | |||
| 386 | .procname = "fs", | |||
| 387 | .mode = 0555, | |||
| 388 | .child = nlm_sysctl_dir, | |||
| 389 | }, | |||
| 390 | { .ctl_name = 0 } | |||
| 391 | }; | |||
| 392 | ||||
| 393 | /* | |||
| 394 | * Module (and driverfs) parameters. | |||
| 395 | */ | |||
| 396 | ||||
| 397 | #define param_set_min_max(name, type, which_strtol, min, max) \ | |||
| 398 | static int param_set_##name(const char *val, struct kernel_param *kp) \ | |||
| 399 | { \ | |||
| 400 | char *endp; \ | |||
| 401 | __typeof__(type) num = which_strtol(val, &endp, 0); \ | |||
| 402 | if (endp == val || *endp || num < (min) || num > (max)) \ | |||
| 403 | return -EINVAL; \ | |||
| 404 | *((int *) kp->arg) = num; \ | |||
| 405 | return 0; \ | |||
| 406 | } | |||
| 407 | ||||
| 0 | 0 | - | 408 | static inline int is_callback(u32 proc) |
| 409 | { | |||
| 410 | return proc == NLMPROC_GRANTED | |||
| 411 | || proc == NLMPROC_GRANTED_MSG | |||
| 412 | || proc == NLMPROC_TEST_RES | |||
| 413 | || proc == NLMPROC_LOCK_RES | |||
| 414 | || proc == NLMPROC_CANCEL_RES | |||
| 415 | || proc == NLMPROC_UNLOCK_RES | |||
| 0 | - | 416 | || proc == NLMPROC_NSM_NOTIFY; | |
| 417 | } | |||
| 418 | ||||
| 419 | ||||
| 0 | 0 | - | 420 | static int lockd_authenticate(struct svc_rqst *rqstp) |
| 421 | { | |||
| 422 | rqstp->rq_client = NULL; | |||
| 423 | switch (rqstp->rq_authop->flavour) { | |||
| 0 | - | 424 | case RPC_AUTH_NULL: | |
| 0 | - | 425 | case RPC_AUTH_UNIX: | |
| 0 | 0 | - | 426 | if (rqstp->rq_proc == 0) |
| 0 | - | 427 | return SVC_OK; | |
| 0 | 0 | - | 428 | if (is_callback(rqstp->rq_proc)) { |
| 429 | /* Leave it to individual procedures to | |||
| 430 | * call nlmsvc_lookup_host(rqstp) | |||
| 431 | */ | |||
| 0 | - | 432 | return SVC_OK; | |
| 433 | } | |||
| 0 | - | 434 | return svc_set_client(rqstp); | |
| 435 | } | |||
| 0 | - | 436 | return SVC_DENIED; | |
| 437 | } | |||
| 438 | ||||
| 439 | ||||
| 0 | 0 | - | 440 | param_set_min_max(port, int, simple_strtol, 0, 65535) |
| 0 | 0 | - | 440 | if (endp == val || * endp || num < ( 0 ) || nu.. |
| 0 | - | 440 | T || _ || _ || _ | |
| 0 | - | 440 | F || T || _ || _ | |
| 0 | - | 440 | F || F || T || _ | |
| 0 | - | 440 | F || F || F || T | |
| 0 | - | 440 | F || F || F || F | |
| 0 | - | 440 | return - 22 | |
| 0 | - | 440 | return 0 | |
| 0 | 0 | - | 441 | param_set_min_max(grace_period, unsigned long, simple_strtoul, |
| 0 | 0 | - | 441 | if (endp == val || * endp || num < ( nlm_grace.. |
| 0 | - | 441 | T || _ || _ || _ | |
| 0 | - | 441 | F || T || _ || _ | |
| 0 | - | 441 | F || F || T || _ | |
| 0 | - | 441 | F || F || F || T | |
| 0 | - | 441 | F || F || F || F | |
| 0 | - | 441 | return - 22 | |
| 0 | - | 441 | return 0 | |
| 442 | nlm_grace_period_min, nlm_grace_period_max) | |||
| 0 | 0 | - | 443 | param_set_min_max(timeout, unsigned long, simple_strtoul, |
| 0 | 0 | - | 443 | if (endp == val || * endp || num < ( nlm_timeo.. |
| 0 | - | 443 | T || _ || _ || _ | |
| 0 | - | 443 | F || T || _ || _ | |
| 0 | - | 443 | F || F || T || _ | |
| 0 | - | 443 | F || F || F || T | |
| 0 | - | 443 | F || F || F || F | |
| 0 | - | 443 | return - 22 | |
| 0 | - | 443 | return 0 | |
| 444 | nlm_timeout_min, nlm_timeout_max) | |||
| 445 | ||||
| 446 | MODULE_AUTHOR("Olaf Kirch <okir@monad.swb.de>"); | |||
| 447 | MODULE_DESCRIPTION("NFS file locking service version " LOCKD_VERSION "."); | |||
| 448 | MODULE_LICENSE("GPL"); | |||
| 449 | ||||
| 450 | module_param_call(nlm_grace_period, param_set_grace_period, param_get_ulong, | |||
| 451 | &nlm_grace_period, 0644); | |||
| 452 | module_param_call(nlm_timeout, param_set_timeout, param_get_ulong, | |||
| 453 | &nlm_timeout, 0644); | |||
| 454 | module_param_call(nlm_udpport, param_set_port, param_get_int, | |||
| 455 | &nlm_udpport, 0644); | |||
| 456 | module_param_call(nlm_tcpport, param_set_port, param_get_int, | |||
| 457 | &nlm_tcpport, 0644); | |||
| 458 | ||||
| 459 | /* | |||
| 460 | * Initialising and terminating the module. | |||
| 461 | */ | |||
| 462 | ||||
| 6 | 0 | 463 | static int __init init_nlm(void) | |
| 464 | { | |||
| 465 | nlm_sysctl_table = register_sysctl_table(nlm_sysctl_root, 0); | |||
| 466 | return nlm_sysctl_table ? 0 : -ENOMEM; | |||
| 6 | 0 | - | 466 | ternary-?: nlm_sysctl_table |
| 6 | 466 | return nlm_sysctl_table ? 0 : - 12 | ||
| 467 | } | |||
| 468 | ||||
| 0 | 0 | - | 469 | static void __exit exit_nlm(void) |
| 470 | { | |||
| 471 | /* FIXME: delete all NLM clients */ | |||
| 472 | nlm_shutdown_hosts(); | |||
| 473 | unregister_sysctl_table(nlm_sysctl_table); | |||
| 474 | } | |||
| 475 | ||||
| 476 | module_init(init_nlm); | |||
| 477 | module_exit(exit_nlm); | |||
| 478 | ||||
| 479 | /* | |||
| 480 | * Define NLM program and procedures | |||
| 481 | */ | |||
| 482 | static struct svc_version nlmsvc_version1 = { | |||
| 483 | .vs_vers = 1, | |||
| 484 | .vs_nproc = 17, | |||
| 485 | .vs_proc = nlmsvc_procedures, | |||
| 486 | .vs_xdrsize = NLMSVC_XDRSIZE, | |||