Annotation of sys/sys/mount.h, Revision 1.1
1.1 ! nbrk 1: /* $OpenBSD: mount.h,v 1.81 2007/06/01 05:37:14 deraadt Exp $ */
! 2: /* $NetBSD: mount.h,v 1.48 1996/02/18 11:55:47 fvdl Exp $ */
! 3:
! 4: /*
! 5: * Copyright (c) 1989, 1991, 1993
! 6: * The Regents of the University of California. All rights reserved.
! 7: *
! 8: * Redistribution and use in source and binary forms, with or without
! 9: * modification, are permitted provided that the following conditions
! 10: * are met:
! 11: * 1. Redistributions of source code must retain the above copyright
! 12: * notice, this list of conditions and the following disclaimer.
! 13: * 2. Redistributions in binary form must reproduce the above copyright
! 14: * notice, this list of conditions and the following disclaimer in the
! 15: * documentation and/or other materials provided with the distribution.
! 16: * 3. Neither the name of the University nor the names of its contributors
! 17: * may be used to endorse or promote products derived from this software
! 18: * without specific prior written permission.
! 19: *
! 20: * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
! 21: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
! 22: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
! 23: * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
! 24: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
! 25: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
! 26: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
! 27: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
! 28: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
! 29: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
! 30: * SUCH DAMAGE.
! 31: *
! 32: * @(#)mount.h 8.15 (Berkeley) 7/14/94
! 33: */
! 34:
! 35: #ifndef _SYS_MOUNT_H_
! 36: #define _SYS_MOUNT_H_
! 37:
! 38: #include <sys/cdefs.h>
! 39: #ifndef _KERNEL
! 40: #include <sys/ucred.h>
! 41: #endif
! 42: #include <sys/queue.h>
! 43: #include <sys/rwlock.h>
! 44:
! 45: typedef struct { int32_t val[2]; } fsid_t; /* file system id type */
! 46:
! 47: /*
! 48: * File identifier.
! 49: * These are unique per filesystem on a single machine.
! 50: */
! 51: #define MAXFIDSZ 16
! 52:
! 53: struct fid {
! 54: u_short fid_len; /* length of data in bytes */
! 55: u_short fid_reserved; /* force longword alignment */
! 56: char fid_data[MAXFIDSZ]; /* data (variable length) */
! 57: };
! 58:
! 59: /*
! 60: * Export arguments for local filesystem mount calls.
! 61: */
! 62: struct export_args {
! 63: int ex_flags; /* export related flags */
! 64: uid_t ex_root; /* mapping for root uid */
! 65: struct ucred ex_anon; /* mapping for anonymous user */
! 66: struct sockaddr *ex_addr; /* net address to which exported */
! 67: int ex_addrlen; /* and the net address length */
! 68: struct sockaddr *ex_mask; /* mask of valid bits in saddr */
! 69: int ex_masklen; /* and the smask length */
! 70: };
! 71:
! 72: /*
! 73: * Arguments to mount UFS-based filesystems
! 74: */
! 75: struct ufs_args {
! 76: char *fspec; /* block special device to mount */
! 77: struct export_args export_info;/* network export information */
! 78: };
! 79:
! 80: /*
! 81: * Arguments to mount MFS
! 82: */
! 83: struct mfs_args {
! 84: char *fspec; /* name to export for statfs */
! 85: struct export_args export_info;/* if exported MFSes are supported */
! 86: caddr_t base; /* base of file system in memory */
! 87: u_long size; /* size of file system */
! 88: };
! 89:
! 90: /*
! 91: * Arguments to mount ISO 9660 filesystems.
! 92: */
! 93: struct iso_args {
! 94: char *fspec; /* block special device to mount */
! 95: struct export_args export_info;/* network export info */
! 96: int flags; /* mounting flags, see below */
! 97: int sess; /* start sector of session */
! 98: };
! 99:
! 100: #define ISOFSMNT_NORRIP 0x00000001 /* disable Rock Ridge Ext.*/
! 101: #define ISOFSMNT_GENS 0x00000002 /* enable generation numbers */
! 102: #define ISOFSMNT_EXTATT 0x00000004 /* enable extended attr. */
! 103: #define ISOFSMNT_NOJOLIET 0x00000008 /* disable Joliet Ext.*/
! 104: #define ISOFSMNT_SESS 0x00000010 /* use iso_args.sess */
! 105:
! 106: /*
! 107: * Arguments to mount NFS
! 108: */
! 109: #define NFS_ARGSVERSION 4 /* change when nfs_args changes */
! 110: struct nfs_args {
! 111: int version; /* args structure version number */
! 112: struct sockaddr *addr; /* file server address */
! 113: int addrlen; /* length of address */
! 114: int sotype; /* Socket type */
! 115: int proto; /* and Protocol */
! 116: u_char *fh; /* File handle to be mounted */
! 117: int fhsize; /* Size, in bytes, of fh */
! 118: int flags; /* flags */
! 119: int wsize; /* write size in bytes */
! 120: int rsize; /* read size in bytes */
! 121: int readdirsize; /* readdir size in bytes */
! 122: int timeo; /* initial timeout in .1 secs */
! 123: int retrans; /* times to retry send */
! 124: int maxgrouplist; /* Max. size of group list */
! 125: int readahead; /* # of blocks to readahead */
! 126: int leaseterm; /* Term (sec) of lease */
! 127: int deadthresh; /* Retrans threshold */
! 128: char *hostname; /* server's name */
! 129: int acregmin; /* Attr cache file recently modified */
! 130: int acregmax; /* ac file not recently modified */
! 131: int acdirmin; /* ac for dir recently modified */
! 132: int acdirmax; /* ac for dir not recently modified */
! 133: };
! 134: /* NFS args version 3 (for backwards compatibility) */
! 135: struct nfs_args3 {
! 136: int version; /* args structure version number */
! 137: struct sockaddr *addr; /* file server address */
! 138: int addrlen; /* length of address */
! 139: int sotype; /* Socket type */
! 140: int proto; /* and Protocol */
! 141: u_char *fh; /* File handle to be mounted */
! 142: int fhsize; /* Size, in bytes, of fh */
! 143: int flags; /* flags */
! 144: int wsize; /* write size in bytes */
! 145: int rsize; /* read size in bytes */
! 146: int readdirsize; /* readdir size in bytes */
! 147: int timeo; /* initial timeout in .1 secs */
! 148: int retrans; /* times to retry send */
! 149: int maxgrouplist; /* Max. size of group list */
! 150: int readahead; /* # of blocks to readahead */
! 151: int leaseterm; /* Term (sec) of lease */
! 152: int deadthresh; /* Retrans threshold */
! 153: char *hostname; /* server's name */
! 154: };
! 155:
! 156: /*
! 157: * NFS mount option flags
! 158: */
! 159: #ifndef _KERNEL
! 160: #define NFSMNT_RESVPORT 0x00000000 /* always use reserved ports */
! 161: #endif /* ! _KERNEL */
! 162: #define NFSMNT_SOFT 0x00000001 /* soft mount (hard is default) */
! 163: #define NFSMNT_WSIZE 0x00000002 /* set write size */
! 164: #define NFSMNT_RSIZE 0x00000004 /* set read size */
! 165: #define NFSMNT_TIMEO 0x00000008 /* set initial timeout */
! 166: #define NFSMNT_RETRANS 0x00000010 /* set number of request retries */
! 167: #define NFSMNT_MAXGRPS 0x00000020 /* set maximum grouplist size */
! 168: #define NFSMNT_INT 0x00000040 /* allow interrupts on hard mount */
! 169: #define NFSMNT_NOCONN 0x00000080 /* Don't Connect the socket */
! 170: #define NFSMNT_NQNFS 0x00000100 /* Use Nqnfs protocol */
! 171: #define NFSMNT_NFSV3 0x00000200 /* Use NFS Version 3 protocol */
! 172: #define NFSMNT_KERB 0x00000400 /* Use Kerberos authentication */
! 173: #define NFSMNT_DUMBTIMR 0x00000800 /* Don't estimate rtt dynamically */
! 174: #define NFSMNT_LEASETERM 0x00001000 /* set lease term (nqnfs) */
! 175: #define NFSMNT_READAHEAD 0x00002000 /* set read ahead */
! 176: #define NFSMNT_DEADTHRESH 0x00004000 /* set dead server retry thresh */
! 177: #ifdef _KERNEL /* Coming soon to a system call near you! */
! 178: #define NFSMNT_NOAC 0x00008000 /* disable attribute cache */
! 179: #endif /* _KERNEL */
! 180: #define NFSMNT_RDIRPLUS 0x00010000 /* Use Readdirplus for V3 */
! 181: #define NFSMNT_READDIRSIZE 0x00020000 /* Set readdir size */
! 182:
! 183: /* Flags valid only in mount syscall arguments */
! 184: #define NFSMNT_ACREGMIN 0x00040000 /* acregmin field valid */
! 185: #define NFSMNT_ACREGMAX 0x00080000 /* acregmax field valid */
! 186: #define NFSMNT_ACDIRMIN 0x00100000 /* acdirmin field valid */
! 187: #define NFSMNT_ACDIRMAX 0x00200000 /* acdirmax field valid */
! 188:
! 189: /* Flags valid only in kernel */
! 190: #define NFSMNT_INTERNAL 0xfffc0000 /* Bits set internally */
! 191: #define NFSMNT_HASWRITEVERF 0x00040000 /* Has write verifier for V3 */
! 192: #define NFSMNT_GOTPATHCONF 0x00080000 /* Got the V3 pathconf info */
! 193: #define NFSMNT_GOTFSINFO 0x00100000 /* Got the V3 fsinfo */
! 194: #define NFSMNT_MNTD 0x00200000 /* Mnt server for mnt point */
! 195: #define NFSMNT_DISMINPROG 0x00400000 /* Dismount in progress */
! 196: #define NFSMNT_DISMNT 0x00800000 /* Dismounted */
! 197: #define NFSMNT_SNDLOCK 0x01000000 /* Send socket lock */
! 198: #define NFSMNT_WANTSND 0x02000000 /* Want above */
! 199: #define NFSMNT_RCVLOCK 0x04000000 /* Rcv socket lock */
! 200: #define NFSMNT_WANTRCV 0x08000000 /* Want above */
! 201: #define NFSMNT_WAITAUTH 0x10000000 /* Wait for authentication */
! 202: #define NFSMNT_HASAUTH 0x20000000 /* Has authenticator */
! 203: #define NFSMNT_WANTAUTH 0x40000000 /* Wants an authenticator */
! 204: #define NFSMNT_AUTHERR 0x80000000 /* Authentication error */
! 205:
! 206: /*
! 207: * Arguments to mount MSDOS filesystems.
! 208: */
! 209: struct msdosfs_args {
! 210: char *fspec; /* blocks special holding the fs to mount */
! 211: struct export_args export_info;
! 212: /* network export information */
! 213: uid_t uid; /* uid that owns msdosfs files */
! 214: gid_t gid; /* gid that owns msdosfs files */
! 215: mode_t mask; /* mask to be applied for msdosfs perms */
! 216: int flags; /* see below */
! 217: };
! 218:
! 219: /*
! 220: * Msdosfs mount options:
! 221: */
! 222: #define MSDOSFSMNT_SHORTNAME 0x01 /* Force old DOS short names only */
! 223: #define MSDOSFSMNT_LONGNAME 0x02 /* Force Win'95 long names */
! 224: #define MSDOSFSMNT_NOWIN95 0x04 /* Completely ignore Win95 entries */
! 225: #define MSDOSFSMNT_ALLOWDIRX 0x10 /* dir is mode +x if r */
! 226:
! 227: /*
! 228: * Arguments to mount ntfs filesystems
! 229: */
! 230: struct ntfs_args {
! 231: char *fspec; /* block special device to mount */
! 232: struct export_args export_info;/* network export information */
! 233: uid_t uid; /* uid that owns ntfs files */
! 234: gid_t gid; /* gid that owns ntfs files */
! 235: mode_t mode; /* mask to be applied for ntfs perms */
! 236: u_long flag; /* additional flags */
! 237: };
! 238:
! 239: /*
! 240: * ntfs mount options:
! 241: */
! 242: #define NTFS_MFLAG_CASEINS 0x00000001
! 243: #define NTFS_MFLAG_ALLNAMES 0x00000002
! 244:
! 245: /* Arguments to mount UDF file systems */
! 246: struct udf_args {
! 247: char *fspec; /* Block special device to mount */
! 248: u_int32_t lastblock; /* Special device last block */
! 249: };
! 250:
! 251: /*
! 252: * Arguments to mount procfs filesystems
! 253: */
! 254: struct procfs_args {
! 255: int version;
! 256: int flags;
! 257: };
! 258:
! 259: /*
! 260: * procfs mount options:
! 261: */
! 262: #define PROCFS_ARGSVERSION 1
! 263: #define PROCFSMNT_LINUXCOMPAT 0x01
! 264:
! 265:
! 266: /*
! 267: * file system statistics
! 268: */
! 269:
! 270: #define MFSNAMELEN 16 /* length of fs type name, including nul */
! 271: #define MNAMELEN 90 /* length of buffer for returned name */
! 272:
! 273: /* per-filesystem mount options */
! 274: union mount_info {
! 275: struct ufs_args ufs_args;
! 276: struct mfs_args mfs_args;
! 277: struct nfs_args nfs_args;
! 278: struct iso_args iso_args;
! 279: struct procfs_args procfs_args;
! 280: struct msdosfs_args msdosfs_args;
! 281: struct ntfs_args ntfs_args;
! 282: char __align[160]; /* 64-bit alignment and room to grow */
! 283: };
! 284:
! 285: /* new statfs structure with mount options */
! 286: struct statfs {
! 287: u_int32_t f_flags; /* copy of mount flags */
! 288: int32_t f_bsize; /* fundamental file system block size */
! 289: u_int32_t f_iosize; /* optimal transfer block size */
! 290: u_int32_t f_blocks; /* total data blocks in file system */
! 291: u_int32_t f_bfree; /* free blocks in fs */
! 292: int32_t f_bavail; /* free blocks avail to non-superuser */
! 293: u_int32_t f_files; /* total file nodes in file system */
! 294: u_int32_t f_ffree; /* free file nodes in fs */
! 295: fsid_t f_fsid; /* file system id */
! 296: uid_t f_owner; /* user that mounted the file system */
! 297: u_int32_t f_syncwrites; /* count of sync writes since mount */
! 298: u_int32_t f_asyncwrites; /* count of async writes since mount */
! 299: u_int32_t f_ctime; /* last mount [-u] time */
! 300: u_int32_t f_spare[3]; /* spare for later */
! 301: char f_fstypename[MFSNAMELEN]; /* fs type name */
! 302: char f_mntonname[MNAMELEN]; /* directory on which mounted */
! 303: char f_mntfromname[MNAMELEN]; /* mounted file system */
! 304: union mount_info mount_info; /* per-filesystem mount options */
! 305: };
! 306:
! 307: /* old (pre-2.6) statfs structure */
! 308: struct ostatfs {
! 309: short f_type; /* type of file system (unused; zero) */
! 310: short f_flags; /* copy of mount flags */
! 311: long f_bsize; /* fundamental file system block size */
! 312: long f_iosize; /* optimal transfer block size */
! 313: long f_blocks; /* total data blocks in file system */
! 314: long f_bfree; /* free blocks in fs */
! 315: long f_bavail; /* free blocks avail to non-superuser */
! 316: long f_files; /* total file nodes in file system */
! 317: long f_ffree; /* free file nodes in fs */
! 318: fsid_t f_fsid; /* file system id */
! 319: uid_t f_owner; /* user that mounted the file system */
! 320: long f_syncwrites; /* count of sync writes since mount */
! 321: long f_asyncwrites; /* count of async writes since mount */
! 322: long f_spare[2]; /* spare for later */
! 323: char f_fstypename[MFSNAMELEN]; /* fs type name */
! 324: char f_mntonname[MNAMELEN]; /* directory on which mounted */
! 325: char f_mntfromname[MNAMELEN]; /* mounted file system */
! 326: };
! 327:
! 328: /*
! 329: * File system types.
! 330: */
! 331: #define MOUNT_FFS "ffs" /* UNIX "Fast" Filesystem */
! 332: #define MOUNT_UFS MOUNT_FFS /* for compatibility */
! 333: #define MOUNT_NFS "nfs" /* Network Filesystem */
! 334: #define MOUNT_MFS "mfs" /* Memory Filesystem */
! 335: #define MOUNT_MSDOS "msdos" /* MSDOS Filesystem */
! 336: #define MOUNT_PORTAL "portal" /* Portal Filesystem */
! 337: #define MOUNT_PROCFS "procfs" /* /proc Filesystem */
! 338: #define MOUNT_AFS "afs" /* Andrew Filesystem */
! 339: #define MOUNT_CD9660 "cd9660" /* ISO9660 (aka CDROM) Filesystem */
! 340: #define MOUNT_EXT2FS "ext2fs" /* Second Extended Filesystem */
! 341: #define MOUNT_NCPFS "ncpfs" /* NetWare Network File System */
! 342: #define MOUNT_XFS "xfs" /* xfs */
! 343: #define MOUNT_NTFS "ntfs" /* NTFS */
! 344: #define MOUNT_UDF "udf" /* UDF */
! 345:
! 346: /*
! 347: * Structure per mounted file system. Each mounted file system has an
! 348: * array of operations and an instance record. The file systems are
! 349: * put on a doubly linked list.
! 350: */
! 351: LIST_HEAD(vnodelst, vnode);
! 352:
! 353: struct mount {
! 354: CIRCLEQ_ENTRY(mount) mnt_list; /* mount list */
! 355: const struct vfsops *mnt_op; /* operations on fs */
! 356: struct vfsconf *mnt_vfc; /* configuration info */
! 357: struct vnode *mnt_vnodecovered; /* vnode we mounted on */
! 358: struct vnode *mnt_syncer; /* syncer vnode */
! 359: struct vnodelst mnt_vnodelist; /* list of vnodes this mount */
! 360: struct rwlock mnt_lock; /* mount structure lock */
! 361: int mnt_flag; /* flags */
! 362: int mnt_maxsymlinklen; /* max size of short symlink */
! 363: struct statfs mnt_stat; /* cache of filesystem stats */
! 364: void *mnt_data; /* private data */
! 365: };
! 366:
! 367: /*
! 368: * Mount flags.
! 369: *
! 370: * Unmount uses MNT_FORCE flag.
! 371: */
! 372: #define MNT_RDONLY 0x00000001 /* read only filesystem */
! 373: #define MNT_SYNCHRONOUS 0x00000002 /* file system written synchronously */
! 374: #define MNT_NOEXEC 0x00000004 /* can't exec from filesystem */
! 375: #define MNT_NOSUID 0x00000008 /* don't honor setuid bits on fs */
! 376: #define MNT_NODEV 0x00000010 /* don't interpret special files */
! 377: #define MNT_ASYNC 0x00000040 /* file system written asynchronously */
! 378:
! 379: /*
! 380: * exported mount flags.
! 381: */
! 382: #define MNT_EXRDONLY 0x00000080 /* exported read only */
! 383: #define MNT_EXPORTED 0x00000100 /* file system is exported */
! 384: #define MNT_DEFEXPORTED 0x00000200 /* exported to the world */
! 385: #define MNT_EXPORTANON 0x00000400 /* use anon uid mapping for everyone */
! 386: #define MNT_EXKERB 0x00000800 /* exported with Kerberos uid mapping */
! 387:
! 388: /*
! 389: * Flags set by internal operations.
! 390: */
! 391: #define MNT_LOCAL 0x00001000 /* filesystem is stored locally */
! 392: #define MNT_QUOTA 0x00002000 /* quotas are enabled on filesystem */
! 393: #define MNT_ROOTFS 0x00004000 /* identifies the root filesystem */
! 394:
! 395: /*
! 396: * Extra post 4.4BSD-lite2 mount flags.
! 397: */
! 398: #define MNT_NOATIME 0x00008000 /* don't update access times on fs */
! 399:
! 400: /*
! 401: * Mask of flags that are visible to statfs()
! 402: */
! 403: #define MNT_VISFLAGMASK 0x0400ffff
! 404:
! 405: #define MNT_BITS \
! 406: "\010\001RDONLY\002SYNCHRONOUS\003NOEXEC\004NOSUID\005NODEV" \
! 407: "\007ASYNC\010EXRDONLY\011EXPORTED\012DEFEXPORTED\013EXPORTANON" \
! 408: "\014EXKERB\015LOCAL\016QUOTA\017ROOTFS"
! 409:
! 410: /*
! 411: * filesystem control flags.
! 412: */
! 413: #define MNT_UPDATE 0x00010000 /* not a real mount, just an update */
! 414: #define MNT_DELEXPORT 0x00020000 /* delete export host lists */
! 415: #define MNT_RELOAD 0x00040000 /* reload filesystem data */
! 416: #define MNT_FORCE 0x00080000 /* force unmount or readonly change */
! 417: #define MNT_WANTRDWR 0x02000000 /* want upgrade to read/write */
! 418: #define MNT_SOFTDEP 0x04000000 /* soft dependencies being done */
! 419: #define MNT_DOOMED 0x08000000 /* device behind filesystem is gone */
! 420:
! 421: /*
! 422: * Sysctl CTL_VFS definitions.
! 423: *
! 424: * Second level identifier specifies which filesystem. Second level
! 425: * identifier VFS_GENERIC returns information about all filesystems.
! 426: */
! 427: #define VFS_GENERIC 0 /* generic filesystem information */
! 428: /*
! 429: * Third level identifiers for VFS_GENERIC are given below; third
! 430: * level identifiers for specific filesystems are given in their
! 431: * mount specific header files.
! 432: */
! 433: #define VFS_MAXTYPENUM 1 /* int: highest defined filesystem type */
! 434: #define VFS_CONF 2 /* struct: vfsconf for filesystem given
! 435: as next argument */
! 436: #define CTL_VFSGENCTL_NAMES { \
! 437: { 0, 0 }, \
! 438: { "maxtypenum", CTLTYPE_INT }, \
! 439: { "conf", CTLTYPE_NODE } \
! 440: }
! 441:
! 442: /*
! 443: * Filesystem configuration information. One of these exists for each
! 444: * type of filesystem supported by the kernel. These are searched at
! 445: * mount time to identify the requested filesystem.
! 446: */
! 447: struct vfsconf {
! 448: const struct vfsops *vfc_vfsops; /* filesystem operations vector */
! 449: char vfc_name[MFSNAMELEN]; /* filesystem type name */
! 450: int vfc_typenum; /* historic filesystem type number */
! 451: int vfc_refcount; /* number mounted of this type */
! 452: int vfc_flags; /* permanent flags */
! 453: int (*vfc_mountroot)(void); /* if != NULL, routine to mount root */
! 454: struct vfsconf *vfc_next; /* next in list */
! 455: };
! 456:
! 457: /*
! 458: * Operations supported on mounted file system.
! 459: */
! 460: #ifdef _KERNEL
! 461: #ifdef __STDC__
! 462: struct nameidata;
! 463: struct mbuf;
! 464: #endif
! 465:
! 466: extern int maxvfsconf; /* highest defined filesystem type */
! 467: extern struct vfsconf *vfsconf; /* head of list of filesystem types */
! 468:
! 469: struct vfsops {
! 470: int (*vfs_mount)(struct mount *mp, const char *path,
! 471: void *data,
! 472: struct nameidata *ndp, struct proc *p);
! 473: int (*vfs_start)(struct mount *mp, int flags,
! 474: struct proc *p);
! 475: int (*vfs_unmount)(struct mount *mp, int mntflags,
! 476: struct proc *p);
! 477: int (*vfs_root)(struct mount *mp, struct vnode **vpp);
! 478: int (*vfs_quotactl)(struct mount *mp, int cmds, uid_t uid,
! 479: caddr_t arg, struct proc *p);
! 480: int (*vfs_statfs)(struct mount *mp, struct statfs *sbp,
! 481: struct proc *p);
! 482: int (*vfs_sync)(struct mount *mp, int waitfor,
! 483: struct ucred *cred, struct proc *p);
! 484: int (*vfs_vget)(struct mount *mp, ino_t ino,
! 485: struct vnode **vpp);
! 486: int (*vfs_fhtovp)(struct mount *mp, struct fid *fhp,
! 487: struct vnode **vpp);
! 488: int (*vfs_vptofh)(struct vnode *vp, struct fid *fhp);
! 489: int (*vfs_init)(struct vfsconf *);
! 490: int (*vfs_sysctl)(int *, u_int, void *, size_t *, void *,
! 491: size_t, struct proc *);
! 492: int (*vfs_checkexp)(struct mount *mp, struct mbuf *nam,
! 493: int *extflagsp, struct ucred **credanonp);
! 494: };
! 495:
! 496: #define VFS_MOUNT(MP, PATH, DATA, NDP, P) \
! 497: (*(MP)->mnt_op->vfs_mount)(MP, PATH, DATA, NDP, P)
! 498: #define VFS_START(MP, FLAGS, P) (*(MP)->mnt_op->vfs_start)(MP, FLAGS, P)
! 499: #define VFS_UNMOUNT(MP, FORCE, P) (*(MP)->mnt_op->vfs_unmount)(MP, FORCE, P)
! 500: #define VFS_ROOT(MP, VPP) (*(MP)->mnt_op->vfs_root)(MP, VPP)
! 501: #define VFS_QUOTACTL(MP,C,U,A,P) (*(MP)->mnt_op->vfs_quotactl)(MP, C, U, A, P)
! 502: #define VFS_STATFS(MP, SBP, P) (*(MP)->mnt_op->vfs_statfs)(MP, SBP, P)
! 503: #define VFS_SYNC(MP, WAIT, C, P) (*(MP)->mnt_op->vfs_sync)(MP, WAIT, C, P)
! 504: #define VFS_VGET(MP, INO, VPP) (*(MP)->mnt_op->vfs_vget)(MP, INO, VPP)
! 505: #define VFS_FHTOVP(MP, FIDP, VPP) \
! 506: (*(MP)->mnt_op->vfs_fhtovp)(MP, FIDP, VPP)
! 507: #define VFS_VPTOFH(VP, FIDP) (*(VP)->v_mount->mnt_op->vfs_vptofh)(VP, FIDP)
! 508: #define VFS_CHECKEXP(MP, NAM, EXFLG, CRED) \
! 509: (*(MP)->mnt_op->vfs_checkexp)(MP, NAM, EXFLG, CRED)
! 510: #endif /* _KERNEL */
! 511:
! 512: /*
! 513: * Flags for various system call interfaces.
! 514: *
! 515: * waitfor flags to vfs_sync() and getfsstat()
! 516: */
! 517: #define MNT_WAIT 1 /* synchronously wait for I/O to complete */
! 518: #define MNT_NOWAIT 2 /* start all I/O, but do not wait for it */
! 519: #define MNT_LAZY 3 /* push data not written by filesystem syncer */
! 520:
! 521: /*
! 522: * Generic file handle
! 523: */
! 524: struct fhandle {
! 525: fsid_t fh_fsid; /* File system id of mount point */
! 526: struct fid fh_fid; /* File sys specific id */
! 527: };
! 528: typedef struct fhandle fhandle_t;
! 529:
! 530: #ifdef _KERNEL
! 531: #include <net/radix.h>
! 532: #include <sys/socket.h> /* XXX for AF_MAX */
! 533:
! 534: /*
! 535: * Network address lookup element
! 536: */
! 537: struct netcred {
! 538: struct radix_node netc_rnodes[2];
! 539: int netc_exflags;
! 540: struct ucred netc_anon;
! 541: };
! 542:
! 543: /*
! 544: * Network export information
! 545: */
! 546: struct netexport {
! 547: struct netcred ne_defexported; /* Default export */
! 548: struct radix_node_head *ne_rtable[AF_MAX+1]; /* Individual exports */
! 549: };
! 550: #endif /* _KERNEL */
! 551:
! 552: #ifdef _KERNEL
! 553: /*
! 554: * exported vnode operations
! 555: */
! 556: int vfs_busy(struct mount *, int);
! 557: #define VB_READ 0x01
! 558: #define VB_WRITE 0x02
! 559: #define VB_NOWAIT 0x04 /* immediately fail on busy lock */
! 560: #define VB_WAIT 0x08 /* sleep fail on busy lock */
! 561:
! 562: int vfs_isbusy(struct mount *);
! 563: int vfs_mount_foreach_vnode(struct mount *, int (*func)(struct vnode *,
! 564: void *), void *);
! 565: void vfs_getnewfsid(struct mount *);
! 566: struct mount *vfs_getvfs(fsid_t *);
! 567: int vfs_mountedon(struct vnode *);
! 568: int vfs_mountroot(void);
! 569: int vfs_rootmountalloc(char *, char *, struct mount **);
! 570: void vfs_unbusy(struct mount *);
! 571: void vfs_unmountall(void);
! 572: extern CIRCLEQ_HEAD(mntlist, mount) mountlist;
! 573:
! 574: struct mount *getvfs(fsid_t *); /* return vfs given fsid */
! 575: /* process mount export info */
! 576: int vfs_export(struct mount *, struct netexport *, struct export_args *);
! 577: /* lookup host in fs export list */
! 578: struct netcred *vfs_export_lookup(struct mount *, struct netexport *,
! 579: struct mbuf *);
! 580: int vfs_allocate_syncvnode(struct mount *);
! 581: int speedup_syncer(void);
! 582:
! 583: int vfs_syncwait(int); /* sync and wait for complete */
! 584: void vfs_shutdown(void); /* unmount and sync file systems */
! 585: long makefstype(char *);
! 586: int dounmount(struct mount *, int, struct proc *, struct vnode *);
! 587: void vfsinit(void);
! 588: void vfs_bufstats(void);
! 589: int vfs_register(struct vfsconf *);
! 590: int vfs_unregister(struct vfsconf *);
! 591: #else /* _KERNEL */
! 592:
! 593: #ifndef _SYS_STAT_H_
! 594: struct stat;
! 595: #endif
! 596:
! 597: __BEGIN_DECLS
! 598: int fstatfs(int, struct statfs *);
! 599: int getfh(const char *, fhandle_t *);
! 600: int getfsstat(struct statfs *, size_t, int);
! 601: int getmntinfo(struct statfs **, int);
! 602: int mount(const char *, const char *, int, void *);
! 603: int statfs(const char *, struct statfs *);
! 604: int unmount(const char *, int);
! 605: #if __BSD_VISIBLE
! 606: int fhopen(const fhandle_t *, int);
! 607: int fhstat(const fhandle_t *, struct stat *);
! 608: int fhstatfs(const fhandle_t *, struct statfs *);
! 609: #endif /* __BSD_VISIBLE */
! 610:
! 611: __END_DECLS
! 612:
! 613: #endif /* _KERNEL */
! 614: #endif /* !_SYS_MOUNT_H_ */
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