1 /* $OpenBSD: am.h,v 1.11 2003/11/08 19:17:29 jmc Exp $ */ 2 3 /* 4 * Copyright (c) 1990 Jan-Simon Pendry 5 * Copyright (c) 1990 Imperial College of Science, Technology & Medicine 6 * Copyright (c) 1990, 1993 7 * The Regents of the University of California. All rights reserved. 8 * 9 * This code is derived from software contributed to Berkeley by 10 * Jan-Simon Pendry at Imperial College, London. 11 * 12 * Redistribution and use in source and binary forms, with or without 13 * modification, are permitted provided that the following conditions 14 * are met: 15 * 1. Redistributions of source code must retain the above copyright 16 * notice, this list of conditions and the following disclaimer. 17 * 2. Redistributions in binary form must reproduce the above copyright 18 * notice, this list of conditions and the following disclaimer in the 19 * documentation and/or other materials provided with the distribution. 20 * 3. Neither the name of the University nor the names of its contributors 21 * may be used to endorse or promote products derived from this software 22 * without specific prior written permission. 23 * 24 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 25 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 26 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 27 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 28 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 29 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 30 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 31 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 32 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 33 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 34 * SUCH DAMAGE. 35 * 36 * from: @(#)am.h 5.6 (Berkeley) 6/6/93 37 */ 38 39 #include "config.h" 40 41 /* 42 * Global declarations 43 */ 44 #include <sys/param.h> 45 #include <sys/socket.h> 46 #include <rpc/rpc.h> 47 #include <sys/mount.h> 48 #include <string.h> 49 #include <stdlib.h> 50 #ifdef MNTENT_HDR 51 #include MNTENT_HDR 52 #endif /* MNTENT_HDR */ 53 #ifndef NFS_PROTOCOL_VERSION 54 #if NFS_ARGSVERSION >= 3 55 #define NFS_PROTOCOL_VERSION 3 56 #endif /* NFS_ARGSVERSION >= 3 */ 57 #endif /* NFS_PROTOCOL_VERSION */ 58 #include "nfs_prot.h" 59 #include <assert.h> 60 61 #ifdef DEBUG_MEM 62 #include <malloc.h> 63 #endif /* DEBUG_MEM */ 64 65 #ifndef MAXHOSTNAMELEN 66 #define MAXHOSTNAMELEN 64 67 #endif /* MAXHOSTNAMELEN */ 68 69 #ifndef MNTTYPE_AUTO 70 #define MNTTYPE_AUTO "auto" 71 #endif /* MNTTYPE_AUTO */ 72 73 #ifndef FALSE 74 #define FALSE 0 75 #define TRUE 1 76 #endif /* FALSE */ 77 78 #ifndef ROOT_MAP 79 #define ROOT_MAP "\"root\"" 80 #endif /* ROOT_MAP */ 81 82 /* 83 * Flags from command line 84 */ 85 extern int print_pid; /* Print pid to stdout */ 86 extern int normalize_hosts; /* Normalize host names before use */ 87 extern int restart_existing_mounts; 88 #ifdef HAS_NIS_MAPS 89 extern char *domain; /* NIS domain to use */ 90 #endif /* HAS_NIS_MAPS */ 91 extern int am_timeo; /* Cache period */ 92 extern int afs_timeo; /* AFS timeout */ 93 extern int afs_retrans; /* AFS retrans */ 94 extern int am_timeo_w; /* Unmount timeout */ 95 extern char *mtab; /* Mount table */ 96 97 typedef enum { 98 Start, 99 Run, 100 Finishing, 101 Quit, 102 Done 103 } serv_state; 104 105 extern serv_state amd_state; /* Should we go now */ 106 extern int immediate_abort; /* Should close-down unmounts be retried */ 107 extern time_t do_mapc_reload; /* Flush & reload mount map cache */ 108 109 /* 110 * Useful constants 111 */ 112 extern char pid_fsname[]; /* kiska.southseas.nz:(pid%d) */ 113 extern char hostd[]; /* "kiska.southseas.nz" */ 114 extern char *hostdomain; /* "southseas.nz" */ 115 extern char *op_sys; /* "sos4" */ 116 extern char *arch; /* "sun4" */ 117 extern char *karch; /* "sun4c" */ 118 extern char *cluster; /* "r+d-kluster" */ 119 extern char *endian; /* "big" */ 120 extern char *auto_dir; /* "/a" */ 121 extern char copyright[]; /* Copyright info */ 122 extern char version[]; /* Version info */ 123 124 typedef struct am_ops am_ops; 125 typedef struct am_node am_node; 126 typedef struct am_opts am_opts; 127 typedef struct mntfs mntfs; 128 typedef struct fserver fserver; 129 typedef struct fsrvinfo fsrvinfo; 130 131 /* 132 * Debug defns. 133 */ 134 #ifdef DEBUG 135 #define DEBUG_MTAB "./mtab" 136 137 extern int debug_flags; /* Debug options */ 138 139 #define D_DAEMON 0x0001 /* Enter daemon mode */ 140 #define D_TRACE 0x0002 /* Do protocol trace */ 141 #define D_FULL 0x0004 /* Do full trace */ 142 #define D_MTAB 0x0008 /* Use local mtab */ 143 #define D_AMQ 0x0010 /* Register amq program */ 144 #define D_STR 0x0020 /* Debug string munging */ 145 #define D_MEM 0x0040 /* Trace memory allocations */ 146 147 /* 148 * Normally, don't enter daemon mode, and don't register amq 149 */ 150 #define D_TEST (~(D_DAEMON|D_MEM|D_STR)) 151 #endif /* DEBUG */ 152 153 /* 154 * Global variables. 155 */ 156 extern unsigned short nfs_port; /* Our NFS service port */ 157 extern struct in_addr myipaddr; /* (An) IP address of this host */ 158 159 extern int foreground; /* Foreground process */ 160 extern time_t next_softclock; /* Time to call softclock() */ 161 extern int task_notify_todo; /* Task notifier needs running */ 162 #ifdef HAS_TFS 163 extern int nfs_server_code_available; 164 #endif /* HAS_TFS */ 165 extern int last_used_map; /* Last map being used for mounts */ 166 extern AUTH *nfs_auth; /* Dummy uthorisation for remote servers */ 167 extern am_node **exported_ap; /* List of nodes */ 168 extern int first_free_map; /* First free node */ 169 extern am_node *root_node; /* Node for "root" */ 170 extern char *wire; /* Name of primary connected network */ 171 #define NEXP_AP (254) 172 #define NEXP_AP_MARGIN (128) 173 174 typedef int (*task_fun)(void *); 175 typedef void (*cb_fun)(int, int, void *); 176 typedef void (*fwd_fun)(void *, int, struct sockaddr_in *, 177 struct sockaddr_in *, void *, int); 178 179 /* 180 * String comparison macros 181 */ 182 #define STREQ(s1, s2) (strcmp((s1), (s2)) == 0) 183 #define FSTREQ(s1, s2) ((*(s1) == *(s2)) && STREQ((s1),(s2))) 184 185 /* 186 * Linked list 187 */ 188 typedef struct qelem qelem; 189 struct qelem { 190 qelem *q_forw; 191 qelem *q_back; 192 }; 193 #define FIRST(ty, q) ((ty *) ((q)->q_forw)) 194 #define LAST(ty, q) ((ty *) ((q)->q_back)) 195 #define NEXT(ty, q) ((ty *) (((qelem *) q)->q_forw)) 196 #define PREV(ty, q) ((ty *) (((qelem *) q)->q_back)) 197 #define HEAD(ty, q) ((ty *) q) 198 #define ITER(v, ty, q) \ 199 for ((v) = FIRST(ty,(q)); (v) != HEAD(ty,(q)); (v) = NEXT(ty,(v))) 200 201 /* 202 * List of mount table entries 203 */ 204 typedef struct mntlist mntlist; 205 struct mntlist { 206 struct mntlist *mnext; 207 struct mntent *mnt; 208 }; 209 210 /* 211 * Mount map 212 */ 213 typedef struct mnt_map mnt_map; 214 215 struct fhstatus; 216 217 /* 218 * Global routines 219 */ 220 extern void am_mounted(am_node *); 221 extern void am_unmounted(am_node *); 222 extern pid_t background(void); 223 extern int bind_resv_port(int, unsigned short *); 224 extern int compute_mount_flags(struct mntent *); 225 extern int softclock(void); 226 #ifdef DEBUG 227 extern int debug_option(char *); 228 #endif /* DEBUG */ 229 extern void deslashify(char *); 230 extern void discard_mntlist(mntlist *mp); 231 /*extern void domain_strip(char *, char *);*/ 232 extern mntfs *dup_mntfs(mntfs *); 233 extern fserver *dup_srvr(fserver*); 234 extern int eval_fs_opts(am_opts *, char *, char *, char *, char *, char *); 235 extern char *expand_key(char *); 236 extern am_node *exported_ap_alloc(void); 237 extern am_node *find_ap(char *); 238 extern am_node *find_mf(mntfs *); 239 extern mntfs *find_mntfs(am_ops *, am_opts *, char *, char *, char *, 240 char *, char *); 241 extern void flush_mntfs(void); 242 extern void flush_nfs_fhandle_cache(fserver *); 243 extern void flush_srvr_nfs_cache(void); 244 extern void forcibly_timeout_mp(am_node *); 245 extern void free_mntfs(mntfs *); 246 extern void free_opts(am_opts *); 247 extern void free_map(am_node *); 248 extern void free_mntlist(mntlist *); 249 extern void free_srvr(fserver *); 250 extern int fwd_init(void); 251 extern int fwd_packet(int, void *, int, struct sockaddr_in *, 252 struct sockaddr_in *, void *, fwd_fun); 253 extern void fwd_reply(void); 254 extern void get_args(int, char *[]); 255 extern char *getwire(void); 256 #ifdef NEED_MNTOPT_PARSER 257 extern char *hasmntopt(struct mntent *, char *); 258 #endif /* NEED_MNTOPT_PARSER */ 259 extern int hasmntval(struct mntent *, char *); 260 extern void host_normalize(char **); 261 extern char *inet_dquad(char *, size_t, u_int32_t); 262 extern void init_map(am_node *, char *); 263 extern void insert_am(am_node *, am_node *); 264 extern void ins_que(qelem *, qelem *); 265 extern int islocalnet(in_addr_t); 266 extern int make_nfs_auth(void); 267 extern void make_root_node(void); 268 extern int make_rpc_packet(char *, int, u_long, struct rpc_msg *, 269 void *, xdrproc_t, AUTH *); 270 extern void map_flush_srvr(fserver *); 271 extern void mapc_add_kv(mnt_map *, char *, char *); 272 extern mnt_map *mapc_find(char *, char *); 273 extern void mapc_free(mnt_map *); 274 extern int mapc_keyiter(mnt_map*, void (*)(char *,void *), void *); 275 extern int mapc_search(mnt_map *, char *, char **); 276 extern void mapc_reload(void); 277 extern void mapc_showtypes(FILE *); 278 extern void mf_mounted(mntfs *mf); 279 extern int mkdirs(char *, int); 280 extern void mk_fattr(am_node *, int); 281 extern void mnt_free(struct mntent *); 282 extern int mount_auto_node(char *, void *); 283 extern int mount_automounter(pid_t); 284 extern int mount_exported(void); 285 extern int mount_fs(struct mntent *, int, caddr_t, int, MTYPE_TYPE); 286 extern int mount_nfs_fh(struct fhstatus *, char *, char *, char *, mntfs *); 287 extern int mount_node(am_node *); 288 extern mntfs *new_mntfs(void); 289 extern void new_ttl(am_node *); 290 extern am_node *next_map(int *); 291 extern int nfs_srvr_port(fserver *, u_short *, void *); 292 extern void normalize_slash(char *); 293 extern void ops_showfstypes(FILE *); 294 extern int pickup_rpc_reply(void *, int, void *, xdrproc_t); 295 extern mntlist *read_mtab(char *); 296 extern mntfs *realloc_mntfs(mntfs *, am_ops *, am_opts *, char *, 297 char *, char *, char *, char *); 298 extern void rem_que(qelem *); 299 extern void reschedule_timeout_mp(void); 300 extern void restart(void); 301 #ifdef UPDATE_MTAB 302 extern void rewrite_mtab(mntlist *); 303 #endif /* UPDATE_MTAB */ 304 extern void rmdirs(char *); 305 extern am_node *root_ap(char *, int); 306 extern int root_keyiter(void (*)(char *,void *), void *); 307 extern void root_newmap(char *, char *, char *); 308 extern void rpc_msg_init(struct rpc_msg *, u_long, u_long, u_long); 309 extern void run_task(task_fun, void *, cb_fun, void *); 310 extern void sched_task(cb_fun, void *, void *); 311 extern void show_rcs_info(const char *, char *); 312 extern void sigchld(int); 313 extern void srvrlog(fserver *, char *); 314 extern char *str3cat(char *, char *, char *, char *); 315 extern char *strnsave(const char *, int); 316 extern char *strealloc(char *, char *); 317 extern char **strsplit(char *, int, int); 318 extern int switch_option(char *); 319 extern int switch_to_logfile(char *); 320 extern void do_task_notify(void); 321 extern int timeout(unsigned int, void (*fn)(), void *); 322 extern void timeout_mp(void); 323 extern void umount_exported(void); 324 extern int umount_fs(char *); 325 /*extern int unmount_node(am_node*); 326 extern int unmount_node_wrap(void *);*/ 327 extern void unregister_amq(void); 328 extern void untimeout(int); 329 extern int valid_key(char *); 330 extern void wakeup(void *); 331 extern void wakeup_task(int, int, void *); 332 extern void wakeup_srvr(fserver *); 333 extern void write_mntent(struct mntent *); 334 #ifdef UPDATE_MTAB 335 extern void unlock_mntlist(void); 336 #else 337 #define unlock_mntlist() 338 #endif /* UPDATE_MTAB */ 339 340 341 #define ALLOC(ty) ((struct ty *) xmalloc(sizeof(struct ty))) 342 343 /* 344 * Options 345 */ 346 struct am_opts { 347 char *fs_glob; /* Smashed copy of global options */ 348 char *fs_local; /* Expanded copy of local options */ 349 char *fs_mtab; /* Mount table entry */ 350 /* Other options ... */ 351 char *opt_dev; 352 char *opt_delay; 353 char *opt_dir; 354 char *opt_fs; 355 char *opt_group; 356 char *opt_mount; 357 char *opt_opts; 358 char *opt_remopts; 359 char *opt_pref; 360 char *opt_cache; 361 char *opt_rfs; 362 char *opt_rhost; 363 char *opt_sublink; 364 char *opt_type; 365 char *opt_unmount; 366 char *opt_user; 367 }; 368 369 /* 370 * File Handle 371 * 372 * This is interpreted by indexing the exported array 373 * by fhh_id. 374 * 375 * The whole structure is mapped onto a standard fhandle_t 376 * when transmitted. 377 */ 378 struct am_fh { 379 int fhh_pid; /* process id */ 380 int fhh_id; /* map id */ 381 int fhh_gen; /* generation number */ 382 }; 383 384 extern am_node *fh_to_mp(nfs_fh *); 385 extern am_node *fh_to_mp3(nfs_fh *, int *, int); 386 extern void mp_to_fh(am_node *, nfs_fh *); 387 #define fh_to_mp2(fhp, rp) fh_to_mp3(fhp, rp, VLOOK_CREATE) 388 extern int auto_fmount(am_node *mp); 389 extern int auto_fumount(am_node *mp); 390 391 #define MAX_READDIR_ENTRIES 16 392 393 typedef char *(*vfs_match)(am_opts *); 394 typedef int (*vfs_init)(mntfs *); 395 typedef int (*vmount_fs)(am_node *); 396 typedef int (*vfmount_fs)(mntfs *); 397 typedef int (*vumount_fs)(am_node *); 398 typedef int (*vfumount_fs)(mntfs *); 399 typedef am_node *(*vlookuppn)(am_node *, char *, int *, int); 400 typedef int (*vreaddir)(am_node *, nfscookie, dirlist *, entry *, int); 401 typedef am_node *(*vreadlink)(am_node *, int *); 402 typedef void (*vmounted)(mntfs *); 403 typedef void (*vumounted)(am_node *); 404 typedef fserver *(*vffserver)(mntfs *); 405 406 struct am_ops { 407 char *fs_type; 408 vfs_match fs_match; 409 vfs_init fs_init; 410 vmount_fs mount_fs; 411 vfmount_fs fmount_fs; 412 vumount_fs umount_fs; 413 vfumount_fs fumount_fs; 414 vlookuppn lookuppn; 415 vreaddir readdir; 416 vreadlink readlink; 417 vmounted mounted; 418 vumounted umounted; 419 vffserver ffserver; 420 int fs_flags; 421 }; 422 extern am_node *efs_lookuppn(am_node *, char *, int *, int); 423 extern int efs_readdir(am_node *, nfscookie, dirlist *, entry *, int); 424 425 #define VLOOK_CREATE 0x1 426 #define VLOOK_DELETE 0x2 427 428 #define FS_DIRECTORY 0x0001 /* This looks like a dir, not a link */ 429 #define FS_MBACKGROUND 0x0002 /* Should background this mount */ 430 #define FS_NOTIMEOUT 0x0004 /* Don't bother with timeouts */ 431 #define FS_MKMNT 0x0008 /* Need to make the mount point */ 432 #define FS_UBACKGROUND 0x0010 /* Unmount in background */ 433 #define FS_BACKGROUND (FS_MBACKGROUND|FS_UBACKGROUND) 434 #define FS_DISCARD 0x0020 /* Discard immediately on last reference */ 435 #define FS_AMQINFO 0x0040 /* Amq is interested in this fs type */ 436 437 #ifdef SUNOS4_COMPAT 438 extern am_ops *sunos4_match(am_opts *, char *, char *, char *, char *, char *); 439 #endif /* SUNOS4_COMPAT */ 440 extern am_ops *ops_match(am_opts *, char *, char *, char *, char *, char *); 441 #include "fstype.h" 442 443 /* 444 * Per-mountpoint statistics 445 */ 446 struct am_stats { 447 time_t s_mtime; /* Mount time */ 448 u_short s_uid; /* Uid of mounter */ 449 int s_getattr; /* Count of getattrs */ 450 int s_lookup; /* Count of lookups */ 451 int s_readdir; /* Count of readdirs */ 452 int s_readlink; /* Count of readlinks */ 453 int s_statfs; /* Count of statfs */ 454 }; 455 typedef struct am_stats am_stats; 456 457 /* 458 * System statistics 459 */ 460 struct amd_stats { 461 int d_drops; /* Dropped requests */ 462 int d_stale; /* Stale NFS handles */ 463 int d_mok; /* Successful mounts */ 464 int d_merr; /* Failed mounts */ 465 int d_uerr; /* Failed unmounts */ 466 }; 467 extern struct amd_stats amd_stats; 468 469 /* 470 * List of fileservers 471 */ 472 struct fserver { 473 qelem fs_q; /* List of fileservers */ 474 int fs_refc; /* Number of references to this node */ 475 char *fs_host; /* Normalized hostname of server */ 476 struct sockaddr_in *fs_ip; /* Network address of server */ 477 int fs_cid; /* Callout id */ 478 int fs_pinger; /* Ping (keepalive) interval */ 479 int fs_flags; /* Flags */ 480 char *fs_type; /* File server type */ 481 void *fs_private; /* Private data */ 482 void (*fs_prfree)(); /* Free private data */ 483 }; 484 #define FSF_VALID 0x0001 /* Valid information available */ 485 #define FSF_DOWN 0x0002 /* This fileserver is thought to be down */ 486 #define FSF_ERROR 0x0004 /* Permanent error has occured */ 487 #define FSF_WANT 0x0008 /* Want a wakeup call */ 488 #define FSF_PINGING 0x0010 /* Already doing pings */ 489 #define FSRV_ISDOWN(fs) (((fs)->fs_flags & (FSF_DOWN|FSF_VALID)) == (FSF_DOWN|FSF_VALID)) 490 #define FSRV_ISUP(fs) (((fs)->fs_flags & (FSF_DOWN|FSF_VALID)) == (FSF_VALID)) 491 492 /* 493 * List of mounted filesystems 494 */ 495 struct mntfs { 496 qelem mf_q; /* List of mounted filesystems */ 497 am_ops *mf_ops; /* Operations on this mountpoint */ 498 am_opts *mf_fo; /* File opts */ 499 char *mf_mount; /* "/a/kiska/home/kiska" */ 500 char *mf_info; /* Mount info */ 501 char *mf_auto; /* Automount opts */ 502 char *mf_mopts; /* FS mount opts */ 503 char *mf_remopts; /* Remote FS mount opts */ 504 fserver *mf_server; /* File server */ 505 int mf_flags; /* Flags */ 506 int mf_error; /* Error code from background mount */ 507 int mf_refc; /* Number of references to this node */ 508 int mf_cid; /* Callout id */ 509 void (*mf_prfree)(); /* Free private space */ 510 void *mf_private; /* Private - per-fs data */ 511 }; 512 513 #define MFF_MOUNTED 0x0001 /* Node is mounted */ 514 #define MFF_MOUNTING 0x0002 /* Mount is in progress */ 515 #define MFF_UNMOUNTING 0x0004 /* Unmount is in progress */ 516 #define MFF_RESTART 0x0008 /* Restarted node */ 517 #define MFF_MKMNT 0x0010 /* Delete this node's am_mount */ 518 #define MFF_ERROR 0x0020 /* This node failed to mount */ 519 #define MFF_LOGDOWN 0x0040 /* Logged that this mount is down */ 520 #define MFF_RSTKEEP 0x0080 /* Don't timeout this filesystem - restarted */ 521 #define MFF_WANTTIMO 0x0100 /* Need a timeout call when not busy */ 522 523 /* 524 * Map of auto-mount points. 525 */ 526 struct am_node { 527 int am_mapno; /* Map number */ 528 mntfs *am_mnt; /* Mounted filesystem */ 529 char *am_name; /* "kiska" 530 Name of this node */ 531 char *am_path; /* "/home/kiska" 532 Path of this node's mount point */ 533 char *am_link; /* "/a/kiska/home/kiska/this/that" 534 Link to sub-directory */ 535 am_node *am_parent, /* Parent of this node */ 536 *am_ysib, /* Younger sibling of this node */ 537 *am_osib, /* Older sibling of this node */ 538 *am_child; /* First child of this node */ 539 struct attrstat am_attr; /* File attributes */ 540 #define am_fattr am_attr.attrstat_u.attributes 541 int am_flags; /* Boolean flags */ 542 int am_error; /* Specific mount error */ 543 time_t am_ttl; /* Time to live */ 544 int am_timeo_w; /* Wait interval */ 545 int am_timeo; /* Timeout interval */ 546 unsigned int am_gen; /* Generation number */ 547 char *am_pref; /* Mount info prefix */ 548 am_stats am_stats; /* Statistics gathering */ 549 }; 550 551 #define AMF_NOTIMEOUT 0x0001 /* This node never times out */ 552 #define AMF_ROOT 0x0002 /* This is a root node */ 553 554 #define ONE_HOUR (60 * 60) /* One hour in seconds */ 555 556 /* 557 * The following values can be tuned... 558 */ 559 #define ALLOWED_MOUNT_TIME 40 /* 40s for a mount */ 560 #define AM_TTL (5 * 60) /* Default cache period */ 561 #define AM_TTL_W (2 * 60) /* Default unmount interval */ 562 #define AM_PINGER 30 /* NFS ping interval for live systems */ 563 #define AFS_TIMEO 8 /* Default afs timeout - .8s */ 564 #define AFS_RETRANS ((ALLOWED_MOUNT_TIME*10+5*afs_timeo)/afs_timeo * 2) 565 /* Default afs retrans - 1/10th seconds */ 566 567 #define RPC_XID_PORTMAP 0 568 #define RPC_XID_MOUNTD 1 569 #define RPC_XID_NFSPING 2 570 #define RPC_XID_MASK (0x0f) /* 16 id's for now */ 571 #define MK_RPC_XID(type_id, uniq) ((type_id) | ((uniq) << 4)) 572