1 /* $NetBSD: mount.h,v 1.98 2002/09/21 18:06:08 christos Exp $ */ 2 3 /* 4 * Copyright (c) 1989, 1991, 1993 5 * The Regents of the University of California. All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 3. All advertising materials mentioning features or use of this software 16 * must display the following acknowledgement: 17 * This product includes software developed by the University of 18 * California, Berkeley and its contributors. 19 * 4. Neither the name of the University nor the names of its contributors 20 * may be used to endorse or promote products derived from this software 21 * without specific prior written permission. 22 * 23 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 24 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 25 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 26 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 27 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 28 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 29 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 31 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 32 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 33 * SUCH DAMAGE. 34 * 35 * @(#)mount.h 8.21 (Berkeley) 5/20/95 36 */ 37 38 #ifndef _SYS_MOUNT_H_ 39 #define _SYS_MOUNT_H_ 40 41 #ifndef _KERNEL 42 #include <sys/ucred.h> 43 #if !defined(_POSIX_C_SOURCE) && !defined(_XOPEN_SOURCE) 44 #include <sys/stat.h> 45 #endif /* !_POSIX_C_SOURCE */ 46 #endif 47 #include <sys/queue.h> 48 #include <sys/lock.h> 49 50 typedef struct { int32_t val[2]; } fsid_t; /* file system id type */ 51 52 /* 53 * File identifier. 54 * These are unique per filesystem on a single machine. 55 */ 56 #define MAXFIDSZ 16 57 58 struct fid { 59 u_short fid_len; /* length of data in bytes */ 60 u_short fid_reserved; /* force longword alignment */ 61 char fid_data[MAXFIDSZ]; /* data (variable length) */ 62 }; 63 64 /* 65 * file system statistics 66 */ 67 68 #define MFSNAMELEN 16 /* length of fs type name, including nul */ 69 #define MNAMELEN 90 /* length of buffer for returned name */ 70 71 struct statfs { 72 short f_type; /* type of file system */ 73 u_short f_oflags; /* deprecated copy of mount flags */ 74 long f_bsize; /* fundamental file system block size */ 75 long f_iosize; /* optimal transfer block size */ 76 long f_blocks; /* total data blocks in file system */ 77 long f_bfree; /* free blocks in fs */ 78 long f_bavail; /* free blocks avail to non-superuser */ 79 long f_files; /* total file nodes in file system */ 80 long f_ffree; /* free file nodes in fs */ 81 fsid_t f_fsid; /* file system id */ 82 uid_t f_owner; /* user that mounted the file system */ 83 long f_flags; /* copy of mount flags */ 84 long f_syncwrites; /* count of sync writes since mount */ 85 long f_asyncwrites; /* count of async writes since mount */ 86 long f_spare[1]; /* spare for later */ 87 char f_fstypename[MFSNAMELEN]; /* fs type name */ 88 char f_mntonname[MNAMELEN]; /* directory on which mounted */ 89 char f_mntfromname[MNAMELEN]; /* mounted file system */ 90 }; 91 92 /* 93 * File system types. 94 */ 95 #define MOUNT_FFS "ffs" /* UNIX "Fast" Filesystem */ 96 #define MOUNT_UFS MOUNT_FFS /* for compatibility */ 97 #define MOUNT_NFS "nfs" /* Network Filesystem */ 98 #define MOUNT_MFS "mfs" /* Memory Filesystem */ 99 #define MOUNT_MSDOS "msdos" /* MSDOS Filesystem */ 100 #define MOUNT_LFS "lfs" /* Log-based Filesystem */ 101 #define MOUNT_FDESC "fdesc" /* File Descriptor Filesystem */ 102 #define MOUNT_PORTAL "portal" /* Portal Filesystem */ 103 #define MOUNT_NULL "null" /* Minimal Filesystem Layer */ 104 #define MOUNT_OVERLAY "overlay" /* Minimal Overlay Filesystem Layer */ 105 #define MOUNT_UMAP "umap" /* User/Group Identifier Remapping Filesystem */ 106 #define MOUNT_KERNFS "kernfs" /* Kernel Information Filesystem */ 107 #define MOUNT_PROCFS "procfs" /* /proc Filesystem */ 108 #define MOUNT_AFS "afs" /* Andrew Filesystem */ 109 #define MOUNT_CD9660 "cd9660" /* ISO9660 (aka CDROM) Filesystem */ 110 #define MOUNT_UNION "union" /* Union (translucent) Filesystem */ 111 #define MOUNT_ADOSFS "adosfs" /* AmigaDOS Filesystem */ 112 #define MOUNT_EXT2FS "ext2fs" /* Second Extended Filesystem */ 113 #define MOUNT_CFS "coda" /* Coda Filesystem */ 114 #define MOUNT_CODA "coda" /* Coda Filesystem */ 115 #define MOUNT_FILECORE "filecore" /* Acorn Filecore Filesystem */ 116 #define MOUNT_NTFS "ntfs" /* Windows/NT Filesystem */ 117 #define MOUNT_SMBFS "smbfs" /* CIFS (SMB) */ 118 119 /* 120 * Structure per mounted file system. Each mounted file system has an 121 * array of operations and an instance record. The file systems are 122 * put on a doubly linked list. 123 */ 124 LIST_HEAD(vnodelst, vnode); 125 126 struct mount { 127 CIRCLEQ_ENTRY(mount) mnt_list; /* mount list */ 128 struct vfsops *mnt_op; /* operations on fs */ 129 struct vnode *mnt_vnodecovered; /* vnode we mounted on */ 130 struct vnode *mnt_syncer; /* syncer vnode */ 131 struct vnodelst mnt_vnodelist; /* list of vnodes this mount */ 132 struct lock mnt_lock; /* mount structure lock */ 133 int mnt_flag; /* flags */ 134 int mnt_maxsymlinklen; /* max size of short symlink */ 135 int mnt_fs_bshift; /* offset shift for lblkno */ 136 int mnt_dev_bshift; /* shift for device sectors */ 137 struct statfs mnt_stat; /* cache of filesystem stats */ 138 void *mnt_data; /* private data */ 139 int mnt_wcnt; /* count of vfs_busy waiters */ 140 struct proc *mnt_unmounter; /* who is unmounting */ 141 }; 142 143 /* 144 * Mount flags. XXX BEWARE: these are not in numerical order! 145 * 146 * Unmount uses MNT_FORCE flag. 147 * 148 * Note that all mount flags are listed here. if you need to add one, take 149 * one of the __MNT_UNUSED flags. 150 */ 151 152 #define __MNT_UNUSED2 0x00400000 153 #define __MNT_UNUSED3 0x00800000 154 155 #define MNT_RDONLY 0x00000001 /* read only filesystem */ 156 #define MNT_SYNCHRONOUS 0x00000002 /* file system written synchronously */ 157 #define MNT_NOEXEC 0x00000004 /* can't exec from filesystem */ 158 #define MNT_NOSUID 0x00000008 /* don't honor setuid bits on fs */ 159 #define MNT_NODEV 0x00000010 /* don't interpret special files */ 160 #define MNT_UNION 0x00000020 /* union with underlying filesystem */ 161 #define MNT_ASYNC 0x00000040 /* file system written asynchronously */ 162 #define MNT_NOCOREDUMP 0x00008000 /* don't write core dumps to this FS */ 163 #define MNT_IGNORE 0x00100000 /* don't show entry in df */ 164 #define MNT_NOATIME 0x04000000 /* Never update access times in fs */ 165 #define MNT_SYMPERM 0x20000000 /* recognize symlink permission */ 166 #define MNT_NODEVMTIME 0x40000000 /* Never update mod times for devs */ 167 #define MNT_SOFTDEP 0x80000000 /* Use soft dependencies */ 168 169 #define __MNT_BASIC_FLAGS \ 170 { MNT_RDONLY, 0, "read-only" }, \ 171 { MNT_SYNCHRONOUS, 0, "synchronous" }, \ 172 { MNT_NOEXEC, 0, "noexec" }, \ 173 { MNT_NOSUID, 0, "nosuid" }, \ 174 { MNT_NODEV, 0, "nodev" }, \ 175 { MNT_UNION, 0, "union" }, \ 176 { MNT_ASYNC, 0, "asynchronous" }, \ 177 { MNT_NOCOREDUMP, 0, "nocoredump" }, \ 178 { MNT_IGNORE, 0, "hidden" }, \ 179 { MNT_NOATIME, 0, "noatime" }, \ 180 { MNT_SYMPERM, 0, "symperm" }, \ 181 { MNT_NODEVMTIME, 0, "nodevmtime" }, \ 182 { MNT_SOFTDEP, 0, "soft dependencies" }, 183 184 /* 185 * exported mount flags. 186 */ 187 #define MNT_EXRDONLY 0x00000080 /* exported read only */ 188 #define MNT_EXPORTED 0x00000100 /* file system is exported */ 189 #define MNT_DEFEXPORTED 0x00000200 /* exported to the world */ 190 #define MNT_EXPORTANON 0x00000400 /* use anon uid mapping for everyone */ 191 #define MNT_EXKERB 0x00000800 /* exported with Kerberos uid mapping */ 192 #define MNT_EXNORESPORT 0x08000000 /* don't enforce reserved ports (NFS) */ 193 #define MNT_EXPUBLIC 0x10000000 /* public export (WebNFS) */ 194 195 #define __MNT_EXPORTED_FLAGS \ 196 { MNT_EXRDONLY, 1, "exported read-only" }, \ 197 { MNT_EXPORTED, 0, "NFS exported" }, \ 198 { MNT_DEFEXPORTED, 1, "exported to the world" }, \ 199 { MNT_EXPORTANON, 1, "anon uid mapping" }, \ 200 { MNT_EXKERB, 1, "kerberos uid mapping" }, \ 201 { MNT_EXNORESPORT, 0, "non-reserved ports" }, \ 202 { MNT_EXPUBLIC, 0, "WebNFS exports" }, 203 /* 204 * Flags set by internal operations. 205 */ 206 #define MNT_LOCAL 0x00001000 /* filesystem is stored locally */ 207 #define MNT_QUOTA 0x00002000 /* quotas are enabled on filesystem */ 208 #define MNT_ROOTFS 0x00004000 /* identifies the root filesystem */ 209 210 211 #define __MNT_INTERNAL_FLAGS \ 212 { MNT_LOCAL, 0, "local" }, \ 213 { MNT_QUOTA, 0, "with quotas" }, \ 214 { MNT_ROOTFS, 1, "root file system" }, 215 /* 216 * Mask of flags that are visible to statfs() 217 */ 218 #define MNT_VISFLAGMASK 0xfc10ffff 219 220 /* 221 * External filesystem control flags. 222 * 223 * MNT_MLOCK lock the mount entry so that name lookup cannot proceed 224 * past the mount point. This keeps the subtree stable during mounts 225 * and unmounts. 226 */ 227 #define MNT_UPDATE 0x00010000 /* not a real mount, just an update */ 228 #define MNT_DELEXPORT 0x00020000 /* delete export host lists */ 229 #define MNT_RELOAD 0x00040000 /* reload filesystem data */ 230 #define MNT_FORCE 0x00080000 /* force unmount or readonly change */ 231 #define MNT_GETARGS 0x00400000 /* retrieve file system specific args */ 232 233 #define __MNT_EXTERNAL_FLAGS \ 234 { MNT_UPDATE, 1, "being updated" }, \ 235 { MNT_DELEXPORT, 1, "delete export list" }, \ 236 { MNT_RELOAD, 1, "reload filesystem data" }, \ 237 { MNT_FORCE, 1, "force unmount or readonly change" }, 238 /* 239 * Internal filesystem control flags. 240 * 241 * MNT_UNMOUNT locks the mount entry so that name lookup cannot proceed 242 * past the mount point. This keeps the subtree stable during mounts 243 * and unmounts. 244 */ 245 #define MNT_GONE 0x00200000 /* filesystem is gone.. */ 246 #define MNT_UNMOUNT 0x01000000 /* unmount in progress */ 247 #define MNT_WANTRDWR 0x02000000 /* upgrade to read/write requested */ 248 249 #define __MNT_CONTROL_FLAGS \ 250 { MNT_GONE, 0, "gone" }, \ 251 { MNT_UNMOUNT, 0, "unmount in progress" }, \ 252 { MNT_WANTRDWR, 0, "upgrade to read/write requested" }, 253 254 #define __MNT_FLAGS \ 255 __MNT_BASIC_FLAGS \ 256 __MNT_EXPORTED_FLAGS \ 257 __MNT_INTERNAL_FLAGS \ 258 __MNT_EXTERNAL_FLAGS \ 259 __MNT_CONTROL_FLAGS 260 /* 261 * Sysctl CTL_VFS definitions. 262 * 263 * Second level identifier specifies which filesystem. Second level 264 * identifier VFS_GENERIC returns information about all filesystems. 265 * 266 * Note the slightly non-flat nature of these sysctl numbers. Oh for 267 * a better sysctl interface. 268 */ 269 #define VFS_GENERIC 0 /* generic filesystem information */ 270 #define VFS_MAXTYPENUM 1 /* int: highest defined fs type */ 271 #define VFS_CONF 2 /* struct: vfsconf for filesystem given 272 as next argument */ 273 #define VFS_USERMOUNT 3 /* enable/disable fs mnt by non-root */ 274 #define VFSGEN_MAXID 4 /* number of valid vfs.generic ids */ 275 276 /* 277 * USE THE SAME NAMES AS MOUNT_*! 278 * 279 * Only need to add new entry here if the filesystem actually supports 280 * sysctl(2). 281 */ 282 #define CTL_VFS_NAMES { \ 283 { "generic", CTLTYPE_NODE }, \ 284 { MOUNT_FFS, CTLTYPE_NODE }, \ 285 { MOUNT_NFS, CTLTYPE_NODE }, \ 286 { MOUNT_MFS, CTLTYPE_NODE }, \ 287 { MOUNT_MSDOS, CTLTYPE_NODE }, \ 288 { MOUNT_LFS, CTLTYPE_NODE }, \ 289 { 0, 0 }, /* MOUNT_LOFS */ \ 290 { MOUNT_FDESC, CTLTYPE_NODE }, \ 291 { MOUNT_PORTAL, CTLTYPE_NODE }, \ 292 { MOUNT_NULL, CTLTYPE_NODE }, \ 293 { MOUNT_UMAP, CTLTYPE_NODE }, \ 294 { MOUNT_KERNFS, CTLTYPE_NODE }, \ 295 { MOUNT_PROCFS, CTLTYPE_NODE }, \ 296 { MOUNT_AFS, CTLTYPE_NODE }, \ 297 { MOUNT_CD9660, CTLTYPE_NODE }, \ 298 { MOUNT_UNION, CTLTYPE_NODE }, \ 299 { MOUNT_ADOSFS, CTLTYPE_NODE }, \ 300 { MOUNT_EXT2FS, CTLTYPE_NODE }, \ 301 { MOUNT_CODA, CTLTYPE_NODE }, \ 302 { MOUNT_FILECORE, CTLTYPE_NODE }, \ 303 { MOUNT_NTFS, CTLTYPE_NODE }, \ 304 } 305 306 #define VFS_MAXID 20 /* number of valid vfs ids */ 307 308 #define CTL_VFSGENCTL_NAMES { \ 309 { 0, 0 }, \ 310 { "maxtypenum", CTLTYPE_INT }, \ 311 { "conf", CTLTYPE_NODE }, /* Special */ \ 312 { "usermount", CTLTYPE_INT }, \ 313 } 314 315 /* 316 * Operations supported on mounted file system. 317 */ 318 #ifdef _KERNEL 319 320 #if defined(COMPAT_09) || defined(COMPAT_43) || defined(COMPAT_44) 321 322 /* 323 * Filesystem configuration information. Not used by NetBSD, but 324 * defined here to provide a compatible sysctl interface to Lite2. 325 */ 326 struct vfsconf { 327 struct vfsops *vfc_vfsops; /* filesystem operations vector */ 328 char vfc_name[MFSNAMELEN]; /* filesystem type name */ 329 int vfc_typenum; /* historic filesystem type number */ 330 int vfc_refcount; /* number mounted of this type */ 331 int vfc_flags; /* permanent flags */ 332 int (*vfc_mountroot)(void); /* if != NULL, routine to mount root */ 333 struct vfsconf *vfc_next; /* next in list */ 334 }; 335 336 #endif 337 338 #if __STDC__ 339 struct nameidata; 340 struct mbuf; 341 struct vnodeopv_desc; 342 #endif 343 344 struct vfsops { 345 const char *vfs_name; 346 int (*vfs_mount) __P((struct mount *mp, const char *path, 347 void *data, struct nameidata *ndp, 348 struct proc *p)); 349 int (*vfs_start) __P((struct mount *mp, int flags, 350 struct proc *p)); 351 int (*vfs_unmount) __P((struct mount *mp, int mntflags, 352 struct proc *p)); 353 int (*vfs_root) __P((struct mount *mp, struct vnode **vpp)); 354 int (*vfs_quotactl) __P((struct mount *mp, int cmds, uid_t uid, 355 caddr_t arg, struct proc *p)); 356 int (*vfs_statfs) __P((struct mount *mp, struct statfs *sbp, 357 struct proc *p)); 358 int (*vfs_sync) __P((struct mount *mp, int waitfor, 359 struct ucred *cred, struct proc *p)); 360 int (*vfs_vget) __P((struct mount *mp, ino_t ino, 361 struct vnode **vpp)); 362 int (*vfs_fhtovp) __P((struct mount *mp, struct fid *fhp, 363 struct vnode **vpp)); 364 int (*vfs_vptofh) __P((struct vnode *vp, struct fid *fhp)); 365 void (*vfs_init) __P((void)); 366 void (*vfs_reinit) __P((void)); 367 void (*vfs_done) __P((void)); 368 int (*vfs_sysctl) __P((int *, u_int, void *, size_t *, void *, 369 size_t, struct proc *)); 370 int (*vfs_mountroot) __P((void)); 371 int (*vfs_checkexp) __P((struct mount *mp, struct mbuf *nam, 372 int *extflagsp, struct ucred **credanonp)); 373 const struct vnodeopv_desc * const *vfs_opv_descs; 374 int vfs_refcount; 375 LIST_ENTRY(vfsops) vfs_list; 376 }; 377 378 #define VFS_MOUNT(MP, PATH, DATA, NDP, P) \ 379 (*(MP)->mnt_op->vfs_mount)(MP, PATH, DATA, NDP, P) 380 #define VFS_START(MP, FLAGS, P) (*(MP)->mnt_op->vfs_start)(MP, FLAGS, P) 381 #define VFS_UNMOUNT(MP, FORCE, P) (*(MP)->mnt_op->vfs_unmount)(MP, FORCE, P) 382 #define VFS_ROOT(MP, VPP) (*(MP)->mnt_op->vfs_root)(MP, VPP) 383 #define VFS_QUOTACTL(MP,C,U,A,P) (*(MP)->mnt_op->vfs_quotactl)(MP, C, U, A, P) 384 #define VFS_STATFS(MP, SBP, P) (*(MP)->mnt_op->vfs_statfs)(MP, SBP, P) 385 #define VFS_SYNC(MP, WAIT, C, P) (*(MP)->mnt_op->vfs_sync)(MP, WAIT, C, P) 386 #define VFS_VGET(MP, INO, VPP) (*(MP)->mnt_op->vfs_vget)(MP, INO, VPP) 387 #define VFS_FHTOVP(MP, FIDP, VPP) (*(MP)->mnt_op->vfs_fhtovp)(MP, FIDP, VPP) 388 #define VFS_CHECKEXP(MP, NAM, EXFLG, CRED) \ 389 (*(MP)->mnt_op->vfs_checkexp)(MP, NAM, EXFLG, CRED) 390 #define VFS_VPTOFH(VP, FIDP) (*(VP)->v_mount->mnt_op->vfs_vptofh)(VP, FIDP) 391 #endif /* _KERNEL */ 392 393 /* 394 * Flags for various system call interfaces. 395 * 396 * waitfor flags to vfs_sync() and getfsstat() 397 */ 398 #define MNT_WAIT 1 /* synchronously wait for I/O to complete */ 399 #define MNT_NOWAIT 2 /* start all I/O, but do not wait for it */ 400 #define MNT_LAZY 3 /* push data not written by filesystem syncer */ 401 402 /* 403 * Generic file handle 404 */ 405 struct fhandle { 406 fsid_t fh_fsid; /* File system id of mount point */ 407 struct fid fh_fid; /* File sys specific id */ 408 }; 409 typedef struct fhandle fhandle_t; 410 411 #ifdef _KERNEL 412 #include <net/radix.h> 413 #include <sys/socket.h> /* XXX for AF_MAX */ 414 415 /* 416 * Network address lookup element 417 */ 418 struct netcred { 419 struct radix_node netc_rnodes[2]; 420 int netc_exflags; 421 struct ucred netc_anon; 422 }; 423 424 /* 425 * Network export information 426 */ 427 struct netexport { 428 struct netcred ne_defexported; /* Default export */ 429 struct radix_node_head *ne_rtable[AF_MAX+1]; /* Individual exports */ 430 }; 431 #endif /* _KERNEL */ 432 433 /* 434 * Export arguments for local filesystem mount calls. 435 */ 436 struct export_args { 437 int ex_flags; /* export related flags */ 438 uid_t ex_root; /* mapping for root uid */ 439 struct uucred ex_anon; /* mapping for anonymous user */ 440 struct sockaddr *ex_addr; /* net address to which exported */ 441 int ex_addrlen; /* and the net address length */ 442 struct sockaddr *ex_mask; /* mask of valid bits in saddr */ 443 int ex_masklen; /* and the smask length */ 444 char *ex_indexfile; /* index file for WebNFS URLs */ 445 }; 446 447 /* 448 * Structure holding information for a publicly exported filesystem 449 * (WebNFS). Currently the specs allow just for one such filesystem. 450 */ 451 struct nfs_public { 452 int np_valid; /* Do we hold valid information */ 453 fhandle_t np_handle; /* Filehandle for pub fs (internal) */ 454 struct mount *np_mount; /* Mountpoint of exported fs */ 455 char *np_index; /* Index file */ 456 }; 457 458 #ifdef _KERNEL 459 /* 460 * exported vnode operations 461 */ 462 struct mount *vfs_getvfs __P((fsid_t *)); /* return vfs given fsid */ 463 int vfs_export /* process mount export info */ 464 __P((struct mount *, struct netexport *, struct export_args *)); 465 #define vfs_showexport(a, b, c) (void)memset((b), 0, sizeof(*(b))) 466 struct netcred *vfs_export_lookup /* lookup host in fs export list */ 467 __P((struct mount *, struct netexport *, struct mbuf *)); 468 int vfs_setpublicfs /* set publicly exported fs */ 469 __P((struct mount *, struct netexport *, struct export_args *)); 470 int vfs_lock __P((struct mount *)); /* lock a vfs */ 471 int vfs_mountedon __P((struct vnode *));/* is a vfs mounted on vp */ 472 int vfs_mountroot __P((void)); 473 void vfs_shutdown __P((void)); /* unmount and sync file systems */ 474 void vfs_unlock __P((struct mount *)); /* unlock a vfs */ 475 void vfs_unmountall __P((struct proc *)); /* unmount file systems */ 476 int vfs_busy __P((struct mount *, int, struct simplelock *)); 477 int vfs_rootmountalloc __P((char *, char *, struct mount **)); 478 void vfs_unbusy __P((struct mount *)); 479 int vfs_attach __P((struct vfsops *)); 480 int vfs_detach __P((struct vfsops *)); 481 void vfs_reinit __P((void)); 482 struct vfsops *vfs_getopsbyname __P((const char *)); 483 int vfs_sysctl __P((int *, u_int, void *, size_t *, void *, size_t, 484 struct proc *)); 485 486 extern CIRCLEQ_HEAD(mntlist, mount) mountlist; /* mounted filesystem list */ 487 extern struct vfsops *vfssw[]; /* filesystem type table */ 488 extern int nvfssw; 489 extern struct nfs_public nfs_pub; 490 extern struct simplelock mountlist_slock; 491 extern struct simplelock spechash_slock; 492 long makefstype __P((const char *)); 493 int dounmount __P((struct mount *, int, struct proc *)); 494 void vfsinit __P((void)); 495 void vfs_opv_init __P((const struct vnodeopv_desc * const *)); 496 void vfs_opv_free __P((const struct vnodeopv_desc * const *)); 497 #ifdef DEBUG 498 void vfs_bufstats __P((void)); 499 #endif 500 501 LIST_HEAD(vfs_list_head, vfsops); 502 extern struct vfs_list_head vfs_list; 503 504 #else /* _KERNEL */ 505 506 #include <sys/cdefs.h> 507 508 __BEGIN_DECLS 509 int fstatfs __P((int, struct statfs *)); 510 int getfh __P((const char *, fhandle_t *)); 511 int getfsstat __P((struct statfs *, long, int)); 512 int getmntinfo __P((struct statfs **, int)); 513 int mount __P((const char *, const char *, int, void *)); 514 int statfs __P((const char *, struct statfs *)); 515 int unmount __P((const char *, int)); 516 #if !defined(_POSIX_C_SOURCE) && !defined(_XOPEN_SOURCE) 517 int fhopen __P((const fhandle_t *, int)); 518 int fhstat __P((const fhandle_t *, struct stat *)); 519 int fhstatfs __P((const fhandle_t *, struct statfs *)); 520 #endif /* !_POSIX_C_SOURCE */ 521 __END_DECLS 522 523 #endif /* _KERNEL */ 524 525 #endif /* !_SYS_MOUNT_H_ */ 526