1 /* 2 * Copyright (c) 1989, 1991, 1993 3 * The Regents of the University of California. All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 3. All advertising materials mentioning features or use of this software 14 * must display the following acknowledgement: 15 * This product includes software developed by the University of 16 * California, Berkeley and its contributors. 17 * 4. Neither the name of the University nor the names of its contributors 18 * may be used to endorse or promote products derived from this software 19 * without specific prior written permission. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 24 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31 * SUCH DAMAGE. 32 * 33 * @(#)mount.h 8.21 (Berkeley) 5/20/95 34 * $FreeBSD: src/sys/sys/mount.h,v 1.89.2.7 2003/04/04 20:35:57 tegge Exp $ 35 * $DragonFly: src/sys/sys/mount.h,v 1.12 2004/08/17 18:57:32 dillon Exp $ 36 */ 37 38 #ifndef _SYS_MOUNT_H_ 39 #define _SYS_MOUNT_H_ 40 41 #include <sys/ucred.h> 42 43 #ifndef _KERNEL 44 #if !defined(_POSIX_C_SOURCE) && !defined(_XOPEN_SOURCE) 45 #include <sys/stat.h> 46 #endif /* !_POSIX_C_SOURCE */ 47 #endif /* !_KERNEL */ 48 49 #include <sys/queue.h> 50 #ifdef _KERNEL 51 #include <sys/lock.h> 52 #endif 53 54 struct thread; 55 struct vop_ops; 56 57 typedef struct fsid { int32_t val[2]; } fsid_t; /* file system id type */ 58 59 /* 60 * File identifier. 61 * These are unique per filesystem on a single machine. 62 */ 63 #define MAXFIDSZ 16 64 65 struct fid { 66 u_short fid_len; /* length of data in bytes */ 67 u_short fid_reserved; /* force longword alignment */ 68 char fid_data[MAXFIDSZ]; /* data (variable length) */ 69 }; 70 71 /* 72 * file system statistics 73 */ 74 75 #define MFSNAMELEN 16 /* length of fs type name, including null */ 76 #define MNAMELEN 80 /* length of buffer for returned name */ 77 78 struct statfs { 79 long f_spare2; /* placeholder */ 80 long f_bsize; /* fundamental file system block size */ 81 long f_iosize; /* optimal transfer block size */ 82 long f_blocks; /* total data blocks in file system */ 83 long f_bfree; /* free blocks in fs */ 84 long f_bavail; /* free blocks avail to non-superuser */ 85 long f_files; /* total file nodes in file system */ 86 long f_ffree; /* free file nodes in fs */ 87 fsid_t f_fsid; /* file system id */ 88 uid_t f_owner; /* user that mounted the filesystem */ 89 int f_type; /* type of filesystem */ 90 int f_flags; /* copy of mount exported flags */ 91 long f_syncwrites; /* count of sync writes since mount */ 92 long f_asyncwrites; /* count of async writes since mount */ 93 char f_fstypename[MFSNAMELEN]; /* fs type name */ 94 char f_mntonname[MNAMELEN]; /* directory on which mounted */ 95 long f_syncreads; /* count of sync reads since mount */ 96 long f_asyncreads; /* count of async reads since mount */ 97 short f_spares1; /* unused spare */ 98 char f_mntfromname[MNAMELEN];/* mounted filesystem */ 99 short f_spares2; /* unused spare */ 100 long f_spare[2]; /* unused spare */ 101 }; 102 103 #if defined(_KERNEL) || defined(_KERNEL_STRUCTURES) 104 /* 105 * Structure per mounted file system. Each mounted file system has an 106 * array of operations and an instance record. The file systems are 107 * put on a doubly linked list. 108 * 109 * NOTE: mnt_nvnodelist and mnt_reservedvnlist. At the moment vnodes 110 * are linked into mnt_nvnodelist. At some point in the near future the 111 * vnode list will be split into a 'dirty' and 'clean' list. mnt_nvnodelist 112 * will become the dirty list and mnt_reservedvnlist will become the 'clean' 113 * list. Filesystem kld's syncing code should remain compatible since 114 * they only need to scan the dirty vnode list (nvnodelist -> dirtyvnodelist). 115 * 116 * NOTE: mnt_fsmanage structures. These structures are required by the new 117 * vnode operations vector abstraction. Each one contains its own operations 118 * vector which is registered just like VNODEOP_SET/vnodeopv_desc except it 119 * is done in the mount code rather then on vfs initialization. This 120 * structure is responsible for per-mount management, including vfs threading, 121 * journaling, and so forth. 122 * 123 * NOTE: Any vnode marked VPLACEMARKER is a placemarker and should ALWAYS BE 124 * SKIPPED. NO OTHER FIELDS IN SUCH VNODES ARE VALID. 125 */ 126 TAILQ_HEAD(vnodelst, vnode); 127 128 struct mount { 129 TAILQ_ENTRY(mount) mnt_list; /* mount list */ 130 struct vfsops *mnt_op; /* operations on fs */ 131 struct vfsconf *mnt_vfc; /* configuration info */ 132 struct vnode *mnt_vnodecovered; /* vnode we mounted on */ 133 struct vnode *mnt_syncer; /* syncer vnode */ 134 struct vnodelst mnt_nvnodelist; /* list of vnodes this mount */ 135 struct lock mnt_lock; /* mount structure lock */ 136 int mnt_flag; /* flags shared with user */ 137 int mnt_kern_flag; /* kernel only flags */ 138 int mnt_maxsymlinklen; /* max size of short symlink */ 139 struct statfs mnt_stat; /* cache of filesystem stats */ 140 qaddr_t mnt_data; /* private data */ 141 time_t mnt_time; /* last time written*/ 142 u_int mnt_iosize_max; /* max IO request size */ 143 struct vnodelst mnt_reservedvnlist; /* (future) dirty vnode list */ 144 int mnt_nvnodelistsize; /* # of vnodes on this mount */ 145 struct vop_ops *mnt_vn_ops; /* for use by the VFS */ 146 struct vop_ops *mnt_vn_spec_ops; /* for use by the VFS */ 147 struct vop_ops *mnt_vn_fifo_ops; /* for use by the VFS */ 148 }; 149 #endif /* _KERNEL || _KERNEL_STRUCTURES */ 150 151 /* 152 * User specifiable flags. 153 */ 154 #define MNT_RDONLY 0x00000001 /* read only filesystem */ 155 #define MNT_SYNCHRONOUS 0x00000002 /* file system written synchronously */ 156 #define MNT_NOEXEC 0x00000004 /* can't exec from filesystem */ 157 #define MNT_NOSUID 0x00000008 /* don't honor setuid bits on fs */ 158 #define MNT_NODEV 0x00000010 /* don't interpret special files */ 159 #define MNT_UNION 0x00000020 /* union with underlying filesystem */ 160 #define MNT_ASYNC 0x00000040 /* file system written asynchronously */ 161 #define MNT_SUIDDIR 0x00100000 /* special handling of SUID on dirs */ 162 #define MNT_SOFTDEP 0x00200000 /* soft updates being done */ 163 #define MNT_NOSYMFOLLOW 0x00400000 /* do not follow symlinks */ 164 #define MNT_NOATIME 0x10000000 /* disable update of file access time */ 165 #define MNT_NOCLUSTERR 0x40000000 /* disable cluster read */ 166 #define MNT_NOCLUSTERW 0x80000000 /* disable cluster write */ 167 168 /* 169 * NFS export related mount flags. 170 */ 171 #define MNT_EXRDONLY 0x00000080 /* exported read only */ 172 #define MNT_EXPORTED 0x00000100 /* file system is exported */ 173 #define MNT_DEFEXPORTED 0x00000200 /* exported to the world */ 174 #define MNT_EXPORTANON 0x00000400 /* use anon uid mapping for everyone */ 175 #define MNT_EXKERB 0x00000800 /* exported with Kerberos uid mapping */ 176 #define MNT_EXPUBLIC 0x20000000 /* public export (WebNFS) */ 177 178 /* 179 * Flags set by internal operations, 180 * but visible to the user. 181 * XXX some of these are not quite right.. (I've never seen the root flag set) 182 */ 183 #define MNT_LOCAL 0x00001000 /* filesystem is stored locally */ 184 #define MNT_QUOTA 0x00002000 /* quotas are enabled on filesystem */ 185 #define MNT_ROOTFS 0x00004000 /* identifies the root filesystem */ 186 #define MNT_USER 0x00008000 /* mounted by a user */ 187 #define MNT_IGNORE 0x00800000 /* do not show entry in df */ 188 189 /* 190 * Mask of flags that are visible to statfs() 191 * XXX I think that this could now become (~(MNT_CMDFLAGS)) 192 * but the 'mount' program may need changing to handle this. 193 */ 194 #define MNT_VISFLAGMASK (MNT_RDONLY | MNT_SYNCHRONOUS | MNT_NOEXEC | \ 195 MNT_NOSUID | MNT_NODEV | MNT_UNION | \ 196 MNT_ASYNC | MNT_EXRDONLY | MNT_EXPORTED | \ 197 MNT_DEFEXPORTED | MNT_EXPORTANON| MNT_EXKERB | \ 198 MNT_LOCAL | MNT_USER | MNT_QUOTA | \ 199 MNT_ROOTFS | MNT_NOATIME | MNT_NOCLUSTERR| \ 200 MNT_NOCLUSTERW | MNT_SUIDDIR | MNT_SOFTDEP | \ 201 MNT_IGNORE | MNT_NOSYMFOLLOW | MNT_EXPUBLIC ) 202 /* 203 * External filesystem command modifier flags. 204 * Unmount can use the MNT_FORCE flag. 205 * XXX These are not STATES and really should be somewhere else. 206 */ 207 #define MNT_UPDATE 0x00010000 /* not a real mount, just an update */ 208 #define MNT_DELEXPORT 0x00020000 /* delete export host lists */ 209 #define MNT_RELOAD 0x00040000 /* reload filesystem data */ 210 #define MNT_FORCE 0x00080000 /* force unmount or readonly change */ 211 #define MNT_CMDFLAGS (MNT_UPDATE|MNT_DELEXPORT|MNT_RELOAD|MNT_FORCE) 212 /* 213 * Internal filesystem control flags stored in mnt_kern_flag. 214 * 215 * MNTK_UNMOUNT locks the mount entry so that name lookup cannot proceed 216 * past the mount point. This keeps the subtree stable during mounts 217 * and unmounts. 218 * 219 * MNTK_UNMOUNTF permits filesystems to detect a forced unmount while 220 * dounmount() is still waiting to lock the mountpoint. This allows 221 * the filesystem to cancel operations that might otherwise deadlock 222 * with the unmount attempt (used by NFS). 223 */ 224 #define MNTK_UNMOUNTF 0x00000001 /* forced unmount in progress */ 225 #define MNTK_UNMOUNT 0x01000000 /* unmount in progress */ 226 #define MNTK_MWAIT 0x02000000 /* waiting for unmount to finish */ 227 #define MNTK_WANTRDWR 0x04000000 /* upgrade to read/write requested */ 228 229 /* 230 * Sysctl CTL_VFS definitions. 231 * 232 * Second level identifier specifies which filesystem. Second level 233 * identifier VFS_VFSCONF returns information about all filesystems. 234 * Second level identifier VFS_GENERIC is non-terminal. 235 */ 236 #define VFS_VFSCONF 0 /* get configured filesystems */ 237 #define VFS_GENERIC 0 /* generic filesystem information */ 238 /* 239 * Third level identifiers for VFS_GENERIC are given below; third 240 * level identifiers for specific filesystems are given in their 241 * mount specific header files. 242 */ 243 #define VFS_MAXTYPENUM 1 /* int: highest defined filesystem type */ 244 #define VFS_CONF 2 /* struct: vfsconf for filesystem given 245 as next argument */ 246 247 /* 248 * Flags for various system call interfaces. 249 * 250 * waitfor flags to vfs_sync() and getfsstat() 251 */ 252 #define MNT_WAIT 1 /* synchronously wait for I/O to complete */ 253 #define MNT_NOWAIT 2 /* start all I/O, but do not wait for it */ 254 #define MNT_LAZY 3 /* push data not written by filesystem syncer */ 255 256 /* 257 * Generic file handle 258 */ 259 struct fhandle { 260 fsid_t fh_fsid; /* File system id of mount point */ 261 struct fid fh_fid; /* File sys specific id */ 262 }; 263 typedef struct fhandle fhandle_t; 264 265 /* 266 * Export arguments for local filesystem mount calls. 267 */ 268 struct export_args { 269 int ex_flags; /* export related flags */ 270 uid_t ex_root; /* mapping for root uid */ 271 struct ucred ex_anon; /* mapping for anonymous user */ 272 struct sockaddr *ex_addr; /* net address to which exported */ 273 int ex_addrlen; /* and the net address length */ 274 struct sockaddr *ex_mask; /* mask of valid bits in saddr */ 275 int ex_masklen; /* and the smask length */ 276 char *ex_indexfile; /* index file for WebNFS URLs */ 277 }; 278 279 /* 280 * Structure holding information for a publicly exported filesystem 281 * (WebNFS). Currently the specs allow just for one such filesystem. 282 */ 283 struct nfs_public { 284 int np_valid; /* Do we hold valid information */ 285 fhandle_t np_handle; /* Filehandle for pub fs (internal) */ 286 struct mount *np_mount; /* Mountpoint of exported fs */ 287 char *np_index; /* Index file */ 288 }; 289 290 /* 291 * Filesystem configuration information. One of these exists for each 292 * type of filesystem supported by the kernel. These are searched at 293 * mount time to identify the requested filesystem. 294 */ 295 struct vfsconf { 296 struct vfsops *vfc_vfsops; /* filesystem operations vector */ 297 char vfc_name[MFSNAMELEN]; /* filesystem type name */ 298 int vfc_typenum; /* historic filesystem type number */ 299 int vfc_refcount; /* number mounted of this type */ 300 int vfc_flags; /* permanent flags */ 301 struct vfsconf *vfc_next; /* next in list */ 302 }; 303 304 struct ovfsconf { 305 void *vfc_vfsops; 306 char vfc_name[32]; 307 int vfc_index; 308 int vfc_refcount; 309 int vfc_flags; 310 }; 311 312 /* 313 * NB: these flags refer to IMPLEMENTATION properties, not properties of 314 * any actual mounts; i.e., it does not make sense to change the flags. 315 */ 316 #define VFCF_STATIC 0x00010000 /* statically compiled into kernel */ 317 #define VFCF_NETWORK 0x00020000 /* may get data over the network */ 318 #define VFCF_READONLY 0x00040000 /* writes are not implemented */ 319 #define VFCF_SYNTHETIC 0x00080000 /* data does not represent real files */ 320 #define VFCF_LOOPBACK 0x00100000 /* aliases some other mounted FS */ 321 #define VFCF_UNICODE 0x00200000 /* stores file names as Unicode*/ 322 323 #ifdef _KERNEL 324 325 #ifdef MALLOC_DECLARE 326 MALLOC_DECLARE(M_MOUNT); 327 #endif 328 extern int maxvfsconf; /* highest defined filesystem type */ 329 extern int nfs_mount_type; /* vfc_typenum for nfs, or -1 */ 330 extern struct vfsconf *vfsconf; /* head of list of filesystem types */ 331 332 #endif 333 334 #if defined(_KERNEL) || defined(_KERNEL_STRUCTURES) 335 336 TAILQ_HEAD(mntlist, mount); /* struct mntlist */ 337 338 /* 339 * Operations supported on mounted file system. 340 */ 341 #ifdef __STDC__ 342 struct nameidata; 343 struct mbuf; 344 #endif 345 346 struct vfsops { 347 int (*vfs_mount) (struct mount *mp, char *path, caddr_t data, 348 struct nameidata *ndp, struct thread *td); 349 int (*vfs_start) (struct mount *mp, int flags, 350 struct thread *td); 351 int (*vfs_unmount) (struct mount *mp, int mntflags, 352 struct thread *td); 353 int (*vfs_root) (struct mount *mp, struct vnode **vpp); 354 int (*vfs_quotactl) (struct mount *mp, int cmds, uid_t uid, 355 caddr_t arg, struct thread *td); 356 int (*vfs_statfs) (struct mount *mp, struct statfs *sbp, 357 struct thread *td); 358 int (*vfs_sync) (struct mount *mp, int waitfor, 359 struct thread *td); 360 int (*vfs_vget) (struct mount *mp, ino_t ino, 361 struct vnode **vpp); 362 int (*vfs_fhtovp) (struct mount *mp, struct fid *fhp, 363 struct vnode **vpp); 364 int (*vfs_checkexp) (struct mount *mp, struct sockaddr *nam, 365 int *extflagsp, struct ucred **credanonp); 366 int (*vfs_vptofh) (struct vnode *vp, struct fid *fhp); 367 int (*vfs_init) (struct vfsconf *); 368 int (*vfs_uninit) (struct vfsconf *); 369 int (*vfs_extattrctl) (struct mount *mp, int cmd, 370 const char *attrname, caddr_t arg, 371 struct thread *td); 372 }; 373 374 #define VFS_MOUNT(MP, PATH, DATA, NDP, P) \ 375 (*(MP)->mnt_op->vfs_mount)(MP, PATH, DATA, NDP, P) 376 #define VFS_START(MP, FLAGS, P) (*(MP)->mnt_op->vfs_start)(MP, FLAGS, P) 377 #define VFS_UNMOUNT(MP, FORCE, P) (*(MP)->mnt_op->vfs_unmount)(MP, FORCE, P) 378 #define VFS_ROOT(MP, VPP) (*(MP)->mnt_op->vfs_root)(MP, VPP) 379 #define VFS_QUOTACTL(MP,C,U,A,P) (*(MP)->mnt_op->vfs_quotactl)(MP, C, U, A, P) 380 #define VFS_STATFS(MP, SBP, P) (*(MP)->mnt_op->vfs_statfs)(MP, SBP, P) 381 #define VFS_SYNC(MP, WAIT, P) (*(MP)->mnt_op->vfs_sync)(MP, WAIT, P) 382 #define VFS_VGET(MP, INO, VPP) (*(MP)->mnt_op->vfs_vget)(MP, INO, VPP) 383 #define VFS_FHTOVP(MP, FIDP, VPP) \ 384 (*(MP)->mnt_op->vfs_fhtovp)(MP, FIDP, VPP) 385 #define VFS_VPTOFH(VP, FIDP) (*(VP)->v_mount->mnt_op->vfs_vptofh)(VP, FIDP) 386 #define VFS_CHECKEXP(MP, NAM, EXFLG, CRED) \ 387 (*(MP)->mnt_op->vfs_checkexp)(MP, NAM, EXFLG, CRED) 388 #define VFS_EXTATTRCTL(MP, C, N, A, P) \ 389 (*(MP)->mnt_op->vfs_extattrctl)(MP, C, N, A, P) 390 391 #endif 392 393 #ifdef _KERNEL 394 395 #include <sys/module.h> 396 397 #define VFS_SET(vfsops, fsname, flags) \ 398 static struct vfsconf fsname ## _vfsconf = { \ 399 &vfsops, \ 400 #fsname, \ 401 -1, \ 402 0, \ 403 flags, \ 404 NULL \ 405 }; \ 406 static moduledata_t fsname ## _mod = { \ 407 #fsname, \ 408 vfs_modevent, \ 409 & fsname ## _vfsconf \ 410 }; \ 411 DECLARE_MODULE(fsname, fsname ## _mod, SI_SUB_VFS, SI_ORDER_MIDDLE) 412 413 #endif 414 415 #if defined(_KERNEL) || defined(_KERNEL_STRUCTURES) 416 417 #include <net/radix.h> 418 419 #define AF_MAX 33 /* XXX */ 420 421 /* 422 * Network address lookup element 423 */ 424 struct netcred { 425 struct radix_node netc_rnodes[2]; 426 int netc_exflags; 427 struct ucred netc_anon; 428 }; 429 430 /* 431 * Network export information 432 */ 433 struct netexport { 434 struct netcred ne_defexported; /* Default export */ 435 struct radix_node_head *ne_rtable[AF_MAX+1]; /* Individual exports */ 436 }; 437 438 #endif 439 440 #ifdef _KERNEL 441 442 extern char *mountrootfsname; 443 444 /* 445 * exported vnode operations 446 */ 447 int dounmount (struct mount *, int, struct thread *); 448 int vfs_setpublicfs /* set publicly exported fs */ 449 (struct mount *, struct netexport *, struct export_args *); 450 int vfs_lock (struct mount *); /* lock a vfs */ 451 void vfs_msync (struct mount *, int); 452 void vfs_unlock (struct mount *); /* unlock a vfs */ 453 int vfs_busy (struct mount *, int, struct lwkt_tokref *, struct thread *); 454 void vfs_bufstats(void); 455 int vfs_export /* process mount export info */ 456 (struct mount *, struct netexport *, struct export_args *); 457 struct netcred *vfs_export_lookup /* lookup host in fs export list */ 458 (struct mount *, struct netexport *, struct sockaddr *); 459 int vfs_allocate_syncvnode (struct mount *); 460 void vfs_getnewfsid (struct mount *); 461 dev_t vfs_getrootfsid (struct mount *); 462 struct mount *vfs_getvfs (fsid_t *); /* return vfs given fsid */ 463 int vfs_modevent (module_t, int, void *); 464 int vfs_mountedon (struct vnode *); /* is a vfs mounted on vp */ 465 int vfs_rootmountalloc (char *, char *, struct mount **); 466 void vfs_unbusy (struct mount *, struct thread *); 467 void vfs_unmountall (void); 468 int vfs_register (struct vfsconf *); 469 int vfs_unregister (struct vfsconf *); 470 extern struct mntlist mountlist; /* mounted filesystem list */ 471 extern struct lwkt_token mountlist_token; 472 extern struct nfs_public nfs_pub; 473 474 /* 475 * Declarations for these vfs default operations are located in 476 * kern/vfs_default.c, they should be used instead of making "dummy" 477 * functions or casting entries in the VFS op table to "enopnotsupp()". 478 */ 479 int vfs_stdmount (struct mount *mp, char *path, caddr_t data, 480 struct nameidata *ndp, struct thread *p); 481 int vfs_stdstart (struct mount *mp, int flags, struct thread *p); 482 int vfs_stdunmount (struct mount *mp, int mntflags, struct thread *p); 483 int vfs_stdroot (struct mount *mp, struct vnode **vpp); 484 int vfs_stdquotactl (struct mount *mp, int cmds, uid_t uid, 485 caddr_t arg, struct thread *p); 486 int vfs_stdstatfs (struct mount *mp, struct statfs *sbp, struct thread *p); 487 int vfs_stdsync (struct mount *mp, int waitfor, struct thread *td); 488 int vfs_stdvget (struct mount *mp, ino_t ino, struct vnode **vpp); 489 int vfs_stdfhtovp (struct mount *mp, struct fid *fhp, struct vnode **vpp); 490 int vfs_stdcheckexp (struct mount *mp, struct sockaddr *nam, 491 int *extflagsp, struct ucred **credanonp); 492 int vfs_stdvptofh (struct vnode *vp, struct fid *fhp); 493 int vfs_stdinit (struct vfsconf *); 494 int vfs_stduninit (struct vfsconf *); 495 int vfs_stdextattrctl (struct mount *mp, int cmd, const char *attrname, 496 caddr_t arg, struct thread *p); 497 498 #else /* !_KERNEL */ 499 500 #include <sys/cdefs.h> 501 502 __BEGIN_DECLS 503 int fstatfs (int, struct statfs *); 504 int getfh (const char *, fhandle_t *); 505 int getfsstat (struct statfs *, long, int); 506 int getmntinfo (struct statfs **, int); 507 int mount (const char *, const char *, int, void *); 508 int statfs (const char *, struct statfs *); 509 int unmount (const char *, int); 510 int fhopen (const struct fhandle *, int); 511 int fhstat (const struct fhandle *, struct stat *); 512 int fhstatfs (const struct fhandle *, struct statfs *); 513 514 /* C library stuff */ 515 void endvfsent (void); 516 struct ovfsconf *getvfsbyname (const char *); 517 struct ovfsconf *getvfsbytype (int); 518 struct ovfsconf *getvfsent (void); 519 #define getvfsbyname new_getvfsbyname 520 int new_getvfsbyname (const char *, struct vfsconf *); 521 void setvfsent (int); 522 int vfsisloadable (const char *); 523 int vfsload (const char *); 524 __END_DECLS 525 526 #endif /* _KERNEL */ 527 528 #endif /* !_SYS_MOUNT_H_ */ 529 530