bsd/sys/mount.h

   1 /*
   2  * Copyright (c) 2000-2004 Apple Computer, Inc. All rights reserved.
   3  *
   4  * @APPLE_LICENSE_HEADER_START@
   5  *
   6  * The contents of this file constitute Original Code as defined in and
   7  * are subject to the Apple Public Source License Version 1.1 (the
   8  * "License").  You may not use this file except in compliance with the
   9  * License.  Please obtain a copy of the License at
  10  * http://www.apple.com/publicsource and read it before using this file.
  11  *
  12  * This Original Code and all software distributed under the License are
  13  * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  14  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  15  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  16  * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT.  Please see the
  17  * License for the specific language governing rights and limitations
  18  * under the License.
  19  *
  20  * @APPLE_LICENSE_HEADER_END@
  21  */
  22 /* Copyright (c) 1995 NeXT Computer, Inc. All Rights Reserved */
  23 /*
  24  * Copyright (c) 1989, 1991, 1993
  25  *      The Regents of the University of California.  All rights reserved.
  26  *
  27  * Redistribution and use in source and binary forms, with or without
  28  * modification, are permitted provided that the following conditions
  29  * are met:
  30  * 1. Redistributions of source code must retain the above copyright
  31  *    notice, this list of conditions and the following disclaimer.
  32  * 2. Redistributions in binary form must reproduce the above copyright
  33  *    notice, this list of conditions and the following disclaimer in the
  34  *    documentation and/or other materials provided with the distribution.
  35  * 3. All advertising materials mentioning features or use of this software
  36  *    must display the following acknowledgement:
  37  *      This product includes software developed by the University of
  38  *      California, Berkeley and its contributors.
  39  * 4. Neither the name of the University nor the names of its contributors
  40  *    may be used to endorse or promote products derived from this software
  41  *    without specific prior written permission.
  42  *
  43  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  44  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  45  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  46  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  47  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  48  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  49  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  50  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  51  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  52  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  53  * SUCH DAMAGE.
  54  *
  55  *      @(#)mount.h     8.21 (Berkeley) 5/20/95
  56  */
  57
  58 #ifndef _SYS_MOUNT_H_
  59 #define _SYS_MOUNT_H_
  60
  61 #include <sys/appleapiopts.h>
  62 #ifndef KERNEL
  63 #include <sys/ucred.h>
  64 #endif
  65 #include <sys/queue.h>
  66 #include <sys/lock.h>
  67 #include <net/radix.h>
  68 #include <sys/socket.h>         /* XXX for AF_MAX */
  69
  70 typedef struct fsid { int32_t val[2]; } fsid_t; /* file system id type */
  71
  72 /*
  73  * File identifier.
  74  * These are unique per filesystem on a single machine.
  75  */
  76 #define MAXFIDSZ        16
  77
  78 struct fid {
  79         u_short         fid_len;                /* length of data in bytes */
  80         u_short         fid_reserved;           /* force longword alignment */
  81         char            fid_data[MAXFIDSZ];     /* data (variable length) */
  82 };
  83
  84 /*
  85  * file system statistics
  86  */
  87
  88 #define MFSNAMELEN      15      /* length of fs type name, not inc. null */
  89 #define MNAMELEN        90      /* length of buffer for returned name */
  90
  91 struct statfs {
  92         short   f_otype;                /* TEMPORARY SHADOW COPY OF f_type */
  93         short   f_oflags;               /* TEMPORARY SHADOW COPY OF f_flags */
  94         long    f_bsize;                /* fundamental file system block size */
  95         long    f_iosize;               /* optimal transfer block size */
  96         long    f_blocks;               /* total data blocks in file system */
  97         long    f_bfree;                /* free blocks in fs */
  98         long    f_bavail;               /* free blocks avail to non-superuser */
  99         long    f_files;                /* total file nodes in file system */
 100         long    f_ffree;                /* free file nodes in fs */
 101         fsid_t  f_fsid;                 /* file system id */
 102         uid_t   f_owner;                /* user that mounted the filesystem */
 103         short   f_reserved1;    /* spare for later */
 104         short   f_type;                 /* type of filesystem */
 105     long        f_flags;                /* copy of mount exported flags */
 106         long    f_reserved2[2]; /* reserved for future use */
 107         char    f_fstypename[MFSNAMELEN]; /* fs type name */
 108         char    f_mntonname[MNAMELEN];  /* directory on which mounted */
 109         char    f_mntfromname[MNAMELEN];/* mounted filesystem */
 110 #if COMPAT_GETFSSTAT
 111         char    f_reserved3[0]; /* For alignment */
 112         long    f_reserved4[0]; /* For future use */
 113 #else
 114         char    f_reserved3;    /* For alignment */
 115         long    f_reserved4[4]; /* For future use */
 116 #endif
 117 };
 118
 119 #ifdef __APPLE_API_PRIVATE
 120 /*
 121  * Structure per mounted file system.  Each mounted file system has an
 122  * array of operations and an instance record.  The file systems are
 123  * put on a doubly linked list.
 124  */
 125 LIST_HEAD(vnodelst, vnode);
 126
 127 struct mount {
 128         CIRCLEQ_ENTRY(mount) mnt_list;          /* mount list */
 129         struct vfsops   *mnt_op;                /* operations on fs */
 130         struct vfsconf  *mnt_vfc;               /* configuration info */
 131         struct vnode    *mnt_vnodecovered;      /* vnode we mounted on */
 132         struct vnodelst mnt_vnodelist;          /* list of vnodes this mount */
 133         struct lock__bsd__ mnt_lock;            /* mount structure lock */
 134         int             mnt_flag;               /* flags */
 135         int             mnt_kern_flag;          /* kernel only flags */
 136         int             mnt_maxsymlinklen;      /* max size of short symlink */
 137         struct statfs   mnt_stat;               /* cache of filesystem stats */
 138         qaddr_t         mnt_data;               /* private data */
 139         /* Cached values of the IO constraints for the device */
 140         union {
 141           u_int32_t     mntu_maxreadcnt;        /* Max. byte count for read */
 142           void         *mntu_xinfo_ptr;         /* points at extended IO constraints */
 143         } mnt_un;                               /* if MNTK_IO_XINFO is set */
 144 #define mnt_maxreadcnt mnt_un.mntu_maxreadcnt
 145 #define mnt_xinfo_ptr  mnt_un.mntu_xinfo_ptr
 146         u_int32_t       mnt_maxwritecnt;        /* Max. byte count for write */
 147         u_int16_t       mnt_segreadcnt; /* Max. segment count for read */
 148         u_int16_t       mnt_segwritecnt;        /* Max. segment count for write */
 149 };
 150 #endif /* __APPLE_API_PRIVATE */
 151
 152 /*
 153  * User specifiable flags.
 154  *
 155  * Unmount uses MNT_FORCE flag.
 156  */
 157 #define MNT_RDONLY      0x00000001      /* read only filesystem */
 158 #define MNT_SYNCHRONOUS 0x00000002      /* file system written synchronously */
 159 #define MNT_NOEXEC      0x00000004      /* can't exec from filesystem */
 160 #define MNT_NOSUID      0x00000008      /* don't honor setuid bits on fs */
 161 #define MNT_NODEV       0x00000010      /* don't interpret special files */
 162 #define MNT_UNION       0x00000020      /* union with underlying filesystem */
 163 #define MNT_ASYNC       0x00000040      /* file system written asynchronously */
 164 #define MNT_DONTBROWSE  0x00100000      /* file system is not appropriate path to user data */
 165 #define MNT_UNKNOWNPERMISSIONS 0x00200000 /* no known mapping for uid/gid in permissions information on disk */
 166 #define MNT_AUTOMOUNTED 0x00400000      /* filesystem was mounted by automounter */
 167 #define MNT_JOURNALED   0x00800000  /* filesystem is journaled */
 168
 169 /*
 170  * NFS export related mount flags.
 171  */
 172 #define MNT_EXRDONLY    0x00000080      /* exported read only */
 173 #define MNT_EXPORTED    0x00000100      /* file system is exported */
 174 #define MNT_DEFEXPORTED 0x00000200      /* exported to the world */
 175 #define MNT_EXPORTANON  0x00000400      /* use anon uid mapping for everyone */
 176 #define MNT_EXKERB      0x00000800      /* exported with Kerberos uid mapping */
 177
 178 /*
 179  * Flags set by internal operations.
 180  */
 181 #define MNT_LOCAL       0x00001000      /* filesystem is stored locally */
 182 #define MNT_QUOTA       0x00002000      /* quotas are enabled on filesystem */
 183 #define MNT_ROOTFS      0x00004000      /* identifies the root filesystem */
 184 #define MNT_DOVOLFS     0x00008000      /* FS supports volfs */
 185 #define MNT_FIXEDSCRIPTENCODING 0x10000000      /* FS supports only fixed script encoding [HFS] */
 186
 187 /*
 188  * XXX I think that this could now become (~(MNT_CMDFLAGS))
 189  * but the 'mount' program may need changing to handle this.
 190  */
 191 #define MNT_VISFLAGMASK (MNT_RDONLY     | MNT_SYNCHRONOUS | MNT_NOEXEC  | \
 192                         MNT_NOSUID      | MNT_NODEV     | MNT_UNION     | \
 193                         MNT_ASYNC       | MNT_EXRDONLY  | MNT_EXPORTED  | \
 194                         MNT_DEFEXPORTED | MNT_EXPORTANON| MNT_EXKERB    | \
 195                         MNT_LOCAL       |               MNT_QUOTA       | \
 196                         MNT_ROOTFS      | MNT_DOVOLFS   | MNT_DONTBROWSE | \
 197                         MNT_UNKNOWNPERMISSIONS | MNT_AUTOMOUNTED | MNT_JOURNALED | MNT_FIXEDSCRIPTENCODING )
 198 /*
 199  * External filesystem command modifier flags.
 200  * Unmount can use the MNT_FORCE flag.
 201  * XXX These are not STATES and really should be somewhere else.
 202  * External filesystem control flags.
 203  */
 204 #define MNT_UPDATE      0x00010000      /* not a real mount, just an update */
 205 #define MNT_DELEXPORT   0x00020000      /* delete export host lists */
 206 #define MNT_RELOAD      0x00040000      /* reload filesystem data */
 207 #define MNT_FORCE       0x00080000      /* force unmount or readonly change */
 208 #define MNT_CMDFLAGS    (MNT_UPDATE|MNT_DELEXPORT|MNT_RELOAD|MNT_FORCE)
 209
 210 /*
 211  * Internal filesystem control flags stored in mnt_kern_flag.
 212  *
 213  * MNTK_UNMOUNT locks the mount entry so that name lookup cannot proceed
 214  * past the mount point.  This keeps the subtree stable during mounts
 215  * and unmounts.
 216  */
 217 #define MNTK_VIRTUALDEV 0x00200000      /* mounted on a virtual device i.e. a disk image */
 218 #define MNTK_ROOTDEV    0x00400000      /* this filesystem resides on the same device as the root */
 219 #define MNTK_IO_XINFO   0x00800000      /* mnt_un.mntu_ioptr has a malloc associated with it */
 220 #define MNTK_UNMOUNT    0x01000000      /* unmount in progress */
 221 #define MNTK_MWAIT      0x02000000      /* waiting for unmount to finish */
 222 #define MNTK_WANTRDWR   0x04000000      /* upgrade to read/write requested */
 223 #if REV_ENDIAN_FS
 224 #define MNT_REVEND      0x08000000      /* Reverse endian FS */
 225 #endif /* REV_ENDIAN_FS */
 226 #define MNTK_FRCUNMOUNT 0x10000000      /* Forced unmount wanted. */
 227 /*
 228  * Sysctl CTL_VFS definitions.
 229  *
 230  * Second level identifier specifies which filesystem. Second level
 231  * identifier VFS_GENERIC returns information about all filesystems.
 232  */
 233 #define VFS_GENERIC             0       /* generic filesystem information */
 234 #define VFS_NUMMNTOPS           1       /* int: total num of vfs mount/unmount operations */
 235 /*
 236  * Third level identifiers for VFS_GENERIC are given below; third
 237  * level identifiers for specific filesystems are given in their
 238  * mount specific header files.
 239  */
 240 #define VFS_MAXTYPENUM  1       /* int: highest defined filesystem type */
 241 #define VFS_CONF        2       /* struct: vfsconf for filesystem given
 242                                    as next argument */
 243 #define VFS_FMOD_WATCH        3 /* block waiting for the next modified file */
 244 #define VFS_FMOD_WATCH_ENABLE 4 /* 1==enable, 0==disable */
 245
 246 /*
 247  * Flags for various system call interfaces.
 248  *
 249  * waitfor flags to vfs_sync() and getfsstat()
 250  */
 251 #define MNT_WAIT        1       /* synchronously wait for I/O to complete */
 252 #define MNT_NOWAIT      2       /* start all I/O, but do not wait for it */
 253
 254 /*
 255  * Generic file handle
 256  */
 257 struct fhandle {
 258         fsid_t  fh_fsid;        /* File system id of mount point */
 259         struct  fid fh_fid;     /* File sys specific id */
 260 };
 261 typedef struct fhandle  fhandle_t;
 262
 263 /*
 264  * Export arguments for local filesystem mount calls.
 265  */
 266 struct export_args {
 267         int     ex_flags;               /* export related flags */
 268         uid_t   ex_root;                /* mapping for root uid */
 269         struct  ucred ex_anon;          /* mapping for anonymous user */
 270         struct  sockaddr *ex_addr;      /* net address to which exported */
 271         int     ex_addrlen;             /* and the net address length */
 272         struct  sockaddr *ex_mask;      /* mask of valid bits in saddr */
 273         int     ex_masklen;             /* and the smask length */
 274 };
 275
 276 #ifdef __APPLE_API_UNSTABLE
 277 /*
 278  * Filesystem configuration information. One of these exists for each
 279  * type of filesystem supported by the kernel. These are searched at
 280  * mount time to identify the requested filesystem.
 281  */
 282 struct vfsconf {
 283         struct  vfsops *vfc_vfsops;     /* filesystem operations vector */
 284         char    vfc_name[MFSNAMELEN];   /* filesystem type name */
 285         int     vfc_typenum;            /* historic filesystem type number */
 286         int     vfc_refcount;           /* number mounted of this type */
 287         int     vfc_flags;              /* permanent flags */
 288         int     (*vfc_mountroot)(void); /* if != NULL, routine to mount root */
 289         struct  vfsconf *vfc_next;      /* next in list */
 290 };
 291
 292 #endif /*__APPLE_API_UNSTABLE */
 293
 294 struct vfsidctl {
 295         int             vc_vers;        /* should be VFSIDCTL_VERS1 (below) */
 296         fsid_t          vc_fsid;        /* fsid to operate on. */
 297         void            *vc_ptr;        /* pointer to data structure. */
 298         size_t          vc_len;         /* sizeof said structure. */
 299         u_int32_t       vc_spare[12];   /* spare (must be zero). */
 300 };
 301
 302 /* vfsidctl API version. */
 303 #define VFS_CTL_VERS1   0x01
 304
 305 /*
 306  * New style VFS sysctls, do not reuse/conflict with the namespace for
 307  * private sysctls.
 308  */
 309 #define VFS_CTL_STATFS  0x00010001      /* statfs */
 310 #define VFS_CTL_UMOUNT  0x00010002      /* unmount */
 311 #define VFS_CTL_QUERY   0x00010003      /* anything wrong? (vfsquery) */
 312 #define VFS_CTL_NEWADDR 0x00010004      /* reconnect to new address */
 313 #define VFS_CTL_TIMEO   0x00010005      /* set timeout for vfs notification */
 314 #define VFS_CTL_NOLOCKS 0x00010006      /* disable file locking */
 315
 316 struct vfsquery {
 317         u_int32_t       vq_flags;
 318         u_int32_t       vq_spare[31];
 319 };
 320
 321 /* vfsquery flags */
 322 #define VQ_NOTRESP      0x0001  /* server down */
 323 #define VQ_NEEDAUTH     0x0002  /* server bad auth */
 324 #define VQ_LOWDISK      0x0004  /* we're low on space */
 325 #define VQ_MOUNT        0x0008  /* new filesystem arrived */
 326 #define VQ_UNMOUNT      0x0010  /* filesystem has left */
 327 #define VQ_DEAD         0x0020  /* filesystem is dead, needs force unmount */
 328 #define VQ_ASSIST       0x0040  /* filesystem needs assistance from external
 329                                    program */
 330 #define VQ_NOTRESPLOCK  0x0080  /* server lockd down */
 331 #define VQ_FLAG0100     0x0100  /* placeholder */
 332 #define VQ_FLAG0200     0x0200  /* placeholder */
 333 #define VQ_FLAG0400     0x0400  /* placeholder */
 334 #define VQ_FLAG0800     0x0800  /* placeholder */
 335 #define VQ_FLAG1000     0x1000  /* placeholder */
 336 #define VQ_FLAG2000     0x2000  /* placeholder */
 337 #define VQ_FLAG4000     0x4000  /* placeholder */
 338 #define VQ_FLAG8000     0x8000  /* placeholder */
 339
 340 #ifdef KERNEL
 341 /* Point a sysctl request at a vfsidctl's data. */
 342 #define VCTLTOREQ(vc, req)                                              \
 343         do {                                                            \
 344                 (req)->newptr = (vc)->vc_ptr;                           \
 345                 (req)->newlen = (vc)->vc_len;                           \
 346                 (req)->newidx = 0;                                      \
 347         } while (0)
 348 #endif
 349
 350 #ifdef KERNEL
 351 #ifdef __APPLE_API_UNSTABLE
 352 extern int maxvfsconf;          /* highest defined filesystem type */
 353 extern struct vfsconf *vfsconf; /* head of list of filesystem types */
 354 extern int maxvfsslots;         /* Maximum slots available to be used */
 355 extern int numused_vfsslots;    /* number of slots already used */
 356
 357 int     vfsconf_add __P((struct vfsconf *));
 358 int     vfsconf_del __P((char *));
 359
 360 /*
 361  * Operations supported on mounted file system.
 362  */
 363 #ifdef __STDC__
 364 struct nameidata;
 365 struct mbuf;
 366 #endif
 367
 368 struct vfsops {
 369         int     (*vfs_mount)    __P((struct mount *mp, char *path, caddr_t data,
 370                                     struct nameidata *ndp, struct proc *p));
 371         int     (*vfs_start)    __P((struct mount *mp, int flags,
 372                                     struct proc *p));
 373         int     (*vfs_unmount)  __P((struct mount *mp, int mntflags,
 374                                     struct proc *p));
 375         int     (*vfs_root)     __P((struct mount *mp, struct vnode **vpp));
 376         int     (*vfs_quotactl) __P((struct mount *mp, int cmds, uid_t uid,
 377                                     caddr_t arg, struct proc *p));
 378         int     (*vfs_statfs)   __P((struct mount *mp, struct statfs *sbp,
 379                                     struct proc *p));
 380         int     (*vfs_sync)     __P((struct mount *mp, int waitfor,
 381                                     struct ucred *cred, struct proc *p));
 382         int     (*vfs_vget)     __P((struct mount *mp, void *ino,
 383                                     struct vnode **vpp));
 384         int     (*vfs_fhtovp)   __P((struct mount *mp, struct fid *fhp,
 385                                     struct mbuf *nam, struct vnode **vpp,
 386                                     int *exflagsp, struct ucred **credanonp));
 387         int     (*vfs_vptofh)   __P((struct vnode *vp, struct fid *fhp));
 388         int     (*vfs_init)     __P((struct vfsconf *));
 389         int     (*vfs_sysctl)   __P((int *, u_int, void *, size_t *, void *,
 390                                     size_t, struct proc *));
 391 };
 392
 393 #define VFS_MOUNT(MP, PATH, DATA, NDP, P) \
 394         (*(MP)->mnt_op->vfs_mount)(MP, PATH, DATA, NDP, P)
 395 #define VFS_START(MP, FLAGS, P)   (*(MP)->mnt_op->vfs_start)(MP, FLAGS, P)
 396 #define VFS_UNMOUNT(MP, FORCE, P) (*(MP)->mnt_op->vfs_unmount)(MP, FORCE, P)
 397 #define VFS_ROOT(MP, VPP)         (*(MP)->mnt_op->vfs_root)(MP, VPP)
 398 #define VFS_QUOTACTL(MP,C,U,A,P)  (*(MP)->mnt_op->vfs_quotactl)(MP, C, U, A, P)
 399 #define VFS_STATFS(MP, SBP, P)    (*(MP)->mnt_op->vfs_statfs)(MP, SBP, P)
 400 #define VFS_SYNC(MP, WAIT, C, P)  (*(MP)->mnt_op->vfs_sync)(MP, WAIT, C, P)
 401 #define VFS_VGET(MP, INO, VPP)    (*(MP)->mnt_op->vfs_vget)(MP, INO, VPP)
 402 #define VFS_FHTOVP(MP, FIDP, NAM, VPP, EXFLG, CRED) \
 403         (*(MP)->mnt_op->vfs_fhtovp)(MP, FIDP, NAM, VPP, EXFLG, CRED)
 404 #define VFS_VPTOFH(VP, FIDP)      (*(VP)->v_mount->mnt_op->vfs_vptofh)(VP, FIDP)
 405
 406 /*
 407  * Network address lookup element
 408  */
 409 struct netcred {
 410         struct  radix_node netc_rnodes[2];
 411         int     netc_exflags;
 412         struct  ucred netc_anon;
 413 };
 414
 415 /*
 416  * Network export information
 417  */
 418 struct netexport {
 419         struct  netcred ne_defexported;               /* Default export */
 420         struct  radix_node_head *ne_rtable[AF_MAX+1]; /* Individual exports */
 421 };
 422
 423 /*
 424  * exported vnode operations
 425  */
 426 int     vfs_busy __P((struct mount *, int, struct slock *, struct proc *));
 427 int     vfs_export __P((struct mount *, struct netexport *,
 428             struct export_args *));
 429 struct  netcred *vfs_export_lookup __P((struct mount *, struct netexport *,
 430             struct mbuf *));
 431 void    vfs_getnewfsid __P((struct mount *));
 432 struct  mount *vfs_getvfs __P((fsid_t *));
 433 int     vfs_mountedon __P((struct vnode *));
 434 void    vfs_unbusy __P((struct mount *, struct proc *));
 435 #ifdef __APPLE_API_PRIVATE
 436 int     vfs_mountroot __P((void));
 437 int     vfs_rootmountalloc __P((char *, char *, struct mount **));
 438 void    vfs_unmountall __P((void));
 439 int     safedounmount(struct mount *, int, struct proc *);
 440 int     dounmount(struct mount *, int, struct proc *);
 441 void    vfs_event_signal(fsid_t *, u_int32_t, intptr_t);
 442 void    vfs_event_init(void);
 443 #endif /* __APPLE_API_PRIVATE */
 444 extern  CIRCLEQ_HEAD(mntlist, mount) mountlist;
 445 extern  struct slock mountlist_slock;
 446
 447 #endif /* __APPLE_API_UNSTABLE */
 448 #else /* !KERNEL */
 449
 450 #include <sys/cdefs.h>
 451
 452 __BEGIN_DECLS
 453 int     fhopen __P((const struct fhandle *, int));
 454 int     fstatfs __P((int, struct statfs *));
 455 int     getfh __P((const char *, fhandle_t *));
 456 int     getfsstat __P((struct statfs *, long, int));
 457 int     getmntinfo __P((struct statfs **, int));
 458 int     mount __P((const char *, const char *, int, void *));
 459 int     statfs __P((const char *, struct statfs *));
 460 int     unmount __P((const char *, int));
 461 int     getvfsbyname __P((const char *, struct vfsconf *));
 462 __END_DECLS
 463
 464 #endif /* KERNEL */
 465 #endif /* !_SYS_MOUNT_H_ */