1 /* 2 * CDDL HEADER START 3 * 4 * The contents of this file are subject to the terms of the 5 * Common Development and Distribution License, Version 1.0 only 6 * (the "License"). You may not use this file except in compliance 7 * with the License. 8 * 9 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 10 * or http://www.opensolaris.org/os/licensing. 11 * See the License for the specific language governing permissions 12 * and limitations under the License. 13 * 14 * When distributing Covered Code, include this CDDL HEADER in each 15 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 16 * If applicable, add the following below this CDDL HEADER, with the 17 * fields enclosed by brackets "[]" replaced with your own identifying 18 * information: Portions Copyright [yyyy] [name of copyright owner] 19 * 20 * CDDL HEADER END 21 */ 22 /* 23 * Copyright 2005 Sun Microsystems, Inc. All rights reserved. 24 * Use is subject to license terms. 25 */ 26 27 #ifndef _AUTOMOUNT_H 28 #define _AUTOMOUNT_H 29 30 #pragma ident "%Z%%M% %I% %E% SMI" 31 32 #include <fslib.h> /* needed for mntlist_t declaration */ 33 #include <thread.h> 34 #include <sys/mntent.h> /* " " MNTTYPE_* declarations */ 35 #include <synch.h> /* needed for mutex_t declaration */ 36 #include <sys/types.h> 37 #include <rpc/rpc.h> 38 #include <rpcsvc/autofs_prot.h> 39 #include <netinet/in.h> /* needed for sockaddr_in declaration */ 40 41 #ifdef MALLOC_DEBUG 42 #include <debug_alloc.h> 43 #endif 44 45 #ifdef __cplusplus 46 extern "C" { 47 #endif 48 49 #ifndef _REENTRANT 50 #define fork1 vfork 51 #define rpc_control(a, b) 1 52 #endif 53 54 55 /* 56 * Solaris autofs configuration file location 57 */ 58 #define AUTOFSADMIN "/etc/default/autofs" 59 60 #define MXHOSTNAMELEN 64 61 #define MAXNETNAMELEN 255 62 #define MAXFILENAMELEN 255 63 #define LINESZ 4096 64 #define MAXADDRLEN 128 /* max autofs address length */ 65 #define MAXOPTSLEN 1024 66 67 #define AUTOFS_MOUNT_TIMEOUT 600 /* default min time mount will */ 68 /* remain mounted (in seconds) */ 69 #define AUTOFS_RPC_TIMEOUT 60 /* secs autofs will wait for */ 70 /* automountd's reply before */ 71 /* retransmitting */ 72 /* stack ops */ 73 #define ERASE 0 74 #define PUSH 1 75 #define POP 2 76 #define INIT 3 77 #define STACKSIZ 30 78 79 #define DIST_SELF 1 80 #define DIST_MYSUB 2 81 #define DIST_MYNET 3 82 #define DIST_OTHER 4 83 84 #define MAXIFS 32 85 86 /* 87 * Retry operation related definitions. 88 */ 89 #define RET_OK 0 90 #define RET_RETRY 32 91 #define RET_ERR 33 92 #define INITDELAY 5 93 #define DELAY_BACKOFF 2 94 #define MAXDELAY 120 95 #define DELAY(delay) { \ 96 (void) sleep(delay); \ 97 delay *= DELAY_BACKOFF; \ 98 if (delay > MAXDELAY) \ 99 delay = MAXDELAY; \ 100 } 101 102 struct mapline { 103 char linebuf[LINESZ]; 104 char lineqbuf[LINESZ]; 105 }; 106 107 /* 108 * Structure describing a host/filesystem/dir tuple in a NIS map entry 109 */ 110 struct mapfs { 111 struct mapfs *mfs_next; /* next in entry */ 112 int mfs_ignore; /* ignore this entry */ 113 char *mfs_host; /* host name */ 114 char *mfs_dir; /* dir to mount */ 115 int mfs_penalty; /* mount penalty for this host */ 116 int mfs_distance; /* distance hint */ 117 struct nfs_args *mfs_args; /* nfs_args */ 118 struct netconfig *mfs_nconf; 119 rpcvers_t mfs_version; /* NFS version */ 120 121 #define MFS_ALLOC_DIR 0x1 /* mfs_dir now points to different */ 122 /* buffer */ 123 124 #define MFS_URL 0x2 /* is NFS url listed in this tuple. */ 125 #define MFS_FH_VIA_WEBNFS 0x4 /* got file handle during ping phase */ 126 127 uint_t mfs_flags; 128 uint_t mfs_port; /* port# in NFS url */ 129 }; 130 131 /* 132 * NIS entry - lookup of name in DIR gets us this 133 */ 134 struct mapent { 135 char *map_fstype; /* file system type e.g. "nfs" */ 136 char *map_mounter; /* base fs e.g. "cachefs" */ 137 char *map_root; /* path to mount root */ 138 char *map_mntpnt; /* path from mount root */ 139 char *map_mntopts; /* mount options */ 140 char *map_fsw; /* mount fs information */ 141 char *map_fswq; /* quoted mountfs information */ 142 int map_mntlevel; /* mapentry hierarchy level */ 143 bool_t map_modified; /* flags modified mapentries */ 144 bool_t map_faked; /* flags faked mapentries */ 145 int map_err; /* flags any bad entries in the map */ 146 struct mapfs *map_fs; /* list of replicas for nfs */ 147 struct mapent *map_next; 148 }; 149 150 151 /* 152 * Descriptor for each directory served by the automounter 153 */ 154 struct autodir { 155 char *dir_name; /* mount point */ 156 char *dir_map; /* name of map for dir */ 157 char *dir_opts; /* default mount options */ 158 int dir_direct; /* direct mountpoint ? */ 159 int dir_remount; /* a remount */ 160 struct autodir *dir_next; /* next entry */ 161 struct autodir *dir_prev; /* prev entry */ 162 }; 163 164 /* 165 * This structure is used to build an array of 166 * hostnames with associated penalties to be 167 * passed to the nfs_cast procedure 168 */ 169 struct host_names { 170 char *host; 171 int penalty; 172 }; 173 174 /* 175 * structure used to build list of contents for a map on 176 * a readdir request 177 */ 178 struct dir_entry { 179 char *name; /* name of entry */ 180 ino_t nodeid; 181 off_t offset; 182 struct dir_entry *next; 183 struct dir_entry *left; /* left element in binary tree */ 184 struct dir_entry *right; /* right element in binary tree */ 185 }; 186 187 /* 188 * offset index table 189 */ 190 struct off_tbl { 191 off_t offset; 192 struct dir_entry *first; 193 struct off_tbl *next; 194 }; 195 196 #ifndef NO_RDDIR_CACHE 197 /* 198 * directory cache for 'map' 199 */ 200 struct rddir_cache { 201 char *map; 202 struct off_tbl *offtp; 203 ulong_t bucket_size; 204 time_t ttl; 205 struct dir_entry *entp; 206 mutex_t lock; /* protects 'in_use' field */ 207 int in_use; /* # threads referencing it */ 208 rwlock_t rwlock; /* protects 'full' and 'next' */ 209 int full; /* full == 1 when cache full */ 210 struct rddir_cache *next; 211 }; 212 213 #define RDDIR_CACHE_TIME 300 /* in seconds */ 214 215 #endif /* NO_RDDIR_CACHE */ 216 217 /* 218 * structure used to maintain address list for localhost 219 */ 220 221 struct myaddrs { 222 struct sockaddr_in sin; 223 struct myaddrs *myaddrs_next; 224 }; 225 226 extern time_t timenow; /* set at start of processing of each RPC call */ 227 extern char self[]; 228 extern int verbose; 229 extern int trace; 230 extern int automountd_nobrowse; 231 extern struct autodir *dir_head; 232 extern struct autodir *dir_tail; 233 extern struct mntlist *current_mounts; 234 struct autofs_args; 235 struct mounta; /* defined in sys/vfs.h */ 236 extern struct myaddrs *myaddrs_head; 237 238 extern rwlock_t cache_lock; 239 extern rwlock_t portmap_cache_lock; 240 extern rwlock_t rddir_cache_lock; 241 242 extern mutex_t cleanup_lock; 243 extern cond_t cleanup_start_cv; 244 extern cond_t cleanup_done_cv; 245 246 /* 247 * mnttab handling routines 248 */ 249 extern void free_mapent(struct mapent *); 250 extern struct mntlist *getmntlist(void); 251 extern dev_t get_devid(struct extmnttab *); 252 253 /* 254 * utilities 255 */ 256 extern struct mapent *parse_entry(char *, char *, char *, struct mapline *, 257 char *, uint_t, bool_t); 258 extern int macro_expand(char *, char *, char *, int); 259 extern void unquote(char *, char *); 260 extern void trim(char *); 261 extern char *get_line(FILE *, char *, char *, int); 262 extern int getword(char *, char *, char **, char **, char, int); 263 extern int get_retry(char *); 264 extern int str_opt(struct mnttab *, char *, char **); 265 extern void dirinit(char *, char *, char *, int, char **, char ***); 266 extern void pr_msg(const char *, ...); 267 extern void trace_prt(int, char *, ...); 268 extern void free_autofs_args(struct autofs_args *); 269 extern void free_mounta(struct mounta *); 270 271 extern int nopt(struct mnttab *, char *, int *); 272 extern int set_versrange(rpcvers_t, rpcvers_t *, rpcvers_t *); 273 extern enum clnt_stat pingnfs(char *, int, rpcvers_t *, rpcvers_t, 274 ushort_t, bool_t, char *, char *); 275 276 extern int self_check(char *); 277 extern int do_mount1(char *, char *, char *, char *, char *, uint_t, 278 action_list **, struct authunix_parms *); 279 extern int do_lookup1(char *, char *, char *, char *, char *, uint_t, 280 enum autofs_action *, struct linka *, struct authunix_parms *); 281 extern int do_unmount1(umntrequest *); 282 extern int do_readdir(struct autofs_rddirargs *, struct autofs_rddirres *, 283 struct authunix_parms *); 284 extern int nfsunmount(struct mnttab *); 285 extern int loopbackmount(char *, char *, char *, int); 286 extern int mount_nfs(struct mapent *, char *, char *, int, 287 struct authunix_parms *); 288 extern int mount_autofs(struct mapent *, char *, action_list *, 289 char *root, char *subdir, char *key); 290 extern int mount_generic(char *, char *, char *, char *, int); 291 extern enum clnt_stat nfs_cast(struct mapfs *, struct mapfs **, int); 292 extern int svc_create_local_service(void (*) (), ulong_t, ulong_t, 293 char *, char *); 294 295 extern bool_t hasrestrictopt(char *); 296 297 #ifndef NO_RDDIR_CACHE 298 /* 299 * readdir handling routines 300 */ 301 extern char *auto_rddir_malloc(unsigned); 302 extern char *auto_rddir_strdup(const char *); 303 extern struct dir_entry *btree_lookup(struct dir_entry *, char *); 304 extern void btree_enter(struct dir_entry **, struct dir_entry *); 305 extern int add_dir_entry(char *, struct dir_entry **, struct dir_entry **); 306 extern void cache_cleanup(void); 307 extern int rddir_cache_lookup(char *, struct rddir_cache **); 308 extern struct dir_entry *rddir_entry_lookup(char *, struct dir_entry *); 309 #endif /* NO_RDDIR_CACHE */ 310 311 /* 312 * generic interface to specific name service functions 313 */ 314 extern void ns_setup(char **, char ***); 315 extern int getmapent(char *, char *, struct mapline *, char **, char ***, 316 bool_t *, bool_t); 317 extern int getmapkeys(char *, struct dir_entry **, int *, int *, char **, 318 char ***, uid_t); 319 extern int loadmaster_map(char *, char *, char **, char ***); 320 extern int loaddirect_map(char *, char *, char *, char **, char ***); 321 322 /* 323 * these name service specific functions should not be 324 * accessed directly, use the generic functions. 325 */ 326 extern void init_files(char **, char ***); 327 extern int getmapent_files(char *, char *, struct mapline *, char **, char ***, 328 bool_t *, bool_t); 329 extern int loadmaster_files(char *, char *, char **, char ***); 330 extern int loaddirect_files(char *, char *, char *, char **, char ***); 331 extern int getmapkeys_files(char *, struct dir_entry **, int *, int *, 332 char **, char ***); 333 extern int stack_op(int, char *, char **, char ***); 334 335 extern void init_nisplus(char **, char ***); 336 extern int getmapent_nisplus(char *, char *, struct mapline *, char **, 337 char ***, bool_t *, bool_t); 338 extern int loadmaster_nisplus(char *, char *, char **, char ***); 339 extern int loaddirect_nisplus(char *, char *, char *, char **, char ***); 340 extern int getmapkeys_nisplus(char *, struct dir_entry **, int *, int *, 341 char **, char ***); 342 343 extern void init_nis(char **, char ***); 344 extern int getmapent_nis(char *, char *, struct mapline *, char **, char ***, 345 bool_t *, bool_t); 346 extern int loadmaster_nis(char *, char *, char **, char ***); 347 extern int loaddirect_nis(char *, char *, char *, char **, char ***); 348 extern int getmapkeys_nis(char *, struct dir_entry **, int *, int *, 349 char **, char ***); 350 351 extern void init_ldap(char **, char ***); 352 extern int getmapent_ldap(char *, char *, struct mapline *, char **, char ***, 353 bool_t *, bool_t); 354 extern int loadmaster_ldap(char *, char *, char **, char ***); 355 extern int loaddirect_ldap(char *, char *, char *, char **, char ***); 356 extern int getmapkeys_ldap(char *, struct dir_entry **, int *, int *, 357 char **, char ***); 358 359 360 /* 361 * end of name service specific functions 362 */ 363 364 /* 365 * not defined in any header file 366 */ 367 extern bool_t xdr_uid_t(XDR *, uid_t *); 368 extern int __clnt_bindresvport(CLIENT *); 369 extern int getnetmaskbynet(const struct in_addr, struct in_addr *); 370 371 /* 372 * Hidden rpc functions 373 */ 374 extern int __nis_reset_state(); 375 extern int __rpc_negotiate_uid(int); 376 extern int __rpc_get_local_uid(SVCXPRT *, uid_t *); 377 378 #ifdef __cplusplus 379 } 380 #endif 381 382 #endif /* _AUTOMOUNT_H */ 383