/* * Copyright (c) 2000-2002 Apple Computer, Inc. All rights reserved. * * @APPLE_LICENSE_HEADER_START@ * * Copyright (c) 1999-2003 Apple Computer, Inc. All Rights Reserved. * * This file contains Original Code and/or Modifications of Original Code * as defined in and that are subject to the Apple Public Source License * Version 2.0 (the 'License'). You may not use this file except in * compliance with the License. Please obtain a copy of the License at * http://www.opensource.apple.com/apsl/ and read it before using this * file. * * The Original Code and all software distributed under the License are * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. * Please see the License for the specific language governing rights and * limitations under the License. * * @APPLE_LICENSE_HEADER_END@ */ /* Copyright (c) 1995 NeXT Computer, Inc. All Rights Reserved */ /* * Copyright (c) 1989, 1991, 1993 * The Regents of the University of California. All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. All advertising materials mentioning features or use of this software * must display the following acknowledgement: * This product includes software developed by the University of * California, Berkeley and its contributors. * 4. Neither the name of the University nor the names of its contributors * may be used to endorse or promote products derived from this software * without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. * * @(#)mount.h 8.21 (Berkeley) 5/20/95 */ #ifndef _SYS_MOUNT_H_ #define _SYS_MOUNT_H_ #include <sys/appleapiopts.h> #ifndef KERNEL #include <sys/ucred.h> #endif #include <sys/queue.h> #include <sys/lock.h> #include <net/radix.h> #include <sys/socket.h> /* XXX for AF_MAX */ typedef struct fsid { int32_t val[2]; } fsid_t; /* file system id type */ /* * File identifier. * These are unique per filesystem on a single machine. */ #define MAXFIDSZ 16 struct fid { u_short fid_len; /* length of data in bytes */ u_short fid_reserved; /* force longword alignment */ char fid_data[MAXFIDSZ]; /* data (variable length) */ }; /* * file system statistics */ #define MFSNAMELEN 15 /* length of fs type name, not inc. null */ #define MNAMELEN 90 /* length of buffer for returned name */ struct statfs { short f_otype; /* TEMPORARY SHADOW COPY OF f_type */ short f_oflags; /* TEMPORARY SHADOW COPY OF f_flags */ long f_bsize; /* fundamental file system block size */ long f_iosize; /* optimal transfer block size */ long f_blocks; /* total data blocks in file system */ long f_bfree; /* free blocks in fs */ long f_bavail; /* free blocks avail to non-superuser */ long f_files; /* total file nodes in file system */ long f_ffree; /* free file nodes in fs */ fsid_t f_fsid; /* file system id */ uid_t f_owner; /* user that mounted the filesystem */ short f_reserved1; /* spare for later */ short f_type; /* type of filesystem */ long f_flags; /* copy of mount exported flags */ long f_reserved2[2]; /* reserved for future use */ char f_fstypename[MFSNAMELEN]; /* fs type name */ char f_mntonname[MNAMELEN]; /* directory on which mounted */ char f_mntfromname[MNAMELEN];/* mounted filesystem */ #if COMPAT_GETFSSTAT char f_reserved3[0]; /* For alignment */ long f_reserved4[0]; /* For future use */ #else char f_reserved3; /* For alignment */ long f_reserved4[4]; /* For future use */ #endif }; #ifdef __APPLE_API_PRIVATE /* * Structure per mounted file system. Each mounted file system has an * array of operations and an instance record. The file systems are * put on a doubly linked list. */ LIST_HEAD(vnodelst, vnode); struct mount { CIRCLEQ_ENTRY(mount) mnt_list; /* mount list */ struct vfsops *mnt_op; /* operations on fs */ struct vfsconf *mnt_vfc; /* configuration info */ struct vnode *mnt_vnodecovered; /* vnode we mounted on */ struct vnodelst mnt_vnodelist; /* list of vnodes this mount */ struct lock__bsd__ mnt_lock; /* mount structure lock */ int mnt_flag; /* flags */ int mnt_kern_flag; /* kernel only flags */ int mnt_maxsymlinklen; /* max size of short symlink */ struct statfs mnt_stat; /* cache of filesystem stats */ qaddr_t mnt_data; /* private data */ /* Cached values of the IO constraints for the device */ u_int32_t mnt_maxreadcnt; /* Max. byte count for read */ u_int32_t mnt_maxwritecnt; /* Max. byte count for write */ u_int16_t mnt_segreadcnt; /* Max. segment count for read */ u_int16_t mnt_segwritecnt; /* Max. segment count for write */ }; #endif /* __APPLE_API_PRIVATE */ /* * User specifiable flags. * * Unmount uses MNT_FORCE flag. */ #define MNT_RDONLY 0x00000001 /* read only filesystem */ #define MNT_SYNCHRONOUS 0x00000002 /* file system written synchronously */ #define MNT_NOEXEC 0x00000004 /* can't exec from filesystem */ #define MNT_NOSUID 0x00000008 /* don't honor setuid bits on fs */ #define MNT_NODEV 0x00000010 /* don't interpret special files */ #define MNT_UNION 0x00000020 /* union with underlying filesystem */ #define MNT_ASYNC 0x00000040 /* file system written asynchronously */ #define MNT_DONTBROWSE 0x00100000 /* file system is not appropriate path to user data */ #define MNT_UNKNOWNPERMISSIONS 0x00200000 /* no known mapping for uid/gid in permissions information on disk */ #define MNT_AUTOMOUNTED 0x00400000 /* filesystem was mounted by automounter */ #define MNT_JOURNALED 0x00800000 /* filesystem is journaled */ /* * NFS export related mount flags. */ #define MNT_EXRDONLY 0x00000080 /* exported read only */ #define MNT_EXPORTED 0x00000100 /* file system is exported */ #define MNT_DEFEXPORTED 0x00000200 /* exported to the world */ #define MNT_EXPORTANON 0x00000400 /* use anon uid mapping for everyone */ #define MNT_EXKERB 0x00000800 /* exported with Kerberos uid mapping */ /* * Flags set by internal operations. */ #define MNT_LOCAL 0x00001000 /* filesystem is stored locally */ #define MNT_QUOTA 0x00002000 /* quotas are enabled on filesystem */ #define MNT_ROOTFS 0x00004000 /* identifies the root filesystem */ #define MNT_DOVOLFS 0x00008000 /* FS supports volfs */ #define MNT_FIXEDSCRIPTENCODING 0x10000000 /* FS supports only fixed script encoding [HFS] */ /* * XXX I think that this could now become (~(MNT_CMDFLAGS)) * but the 'mount' program may need changing to handle this. */ #define MNT_VISFLAGMASK (MNT_RDONLY | MNT_SYNCHRONOUS | MNT_NOEXEC | \ MNT_NOSUID | MNT_NODEV | MNT_UNION | \ MNT_ASYNC | MNT_EXRDONLY | MNT_EXPORTED | \ MNT_DEFEXPORTED | MNT_EXPORTANON| MNT_EXKERB | \ MNT_LOCAL | MNT_QUOTA | \ MNT_ROOTFS | MNT_DOVOLFS | MNT_DONTBROWSE | \ MNT_UNKNOWNPERMISSIONS | MNT_AUTOMOUNTED | MNT_JOURNALED | MNT_FIXEDSCRIPTENCODING ) /* * External filesystem command modifier flags. * Unmount can use the MNT_FORCE flag. * XXX These are not STATES and really should be somewhere else. * External filesystem control flags. */ #define MNT_UPDATE 0x00010000 /* not a real mount, just an update */ #define MNT_DELEXPORT 0x00020000 /* delete export host lists */ #define MNT_RELOAD 0x00040000 /* reload filesystem data */ #define MNT_FORCE 0x00080000 /* force unmount or readonly change */ #define MNT_CMDFLAGS (MNT_UPDATE|MNT_DELEXPORT|MNT_RELOAD|MNT_FORCE) /* * Internal filesystem control flags stored in mnt_kern_flag. * * MNTK_UNMOUNT locks the mount entry so that name lookup cannot proceed * past the mount point. This keeps the subtree stable during mounts * and unmounts. */ #define MNTK_UNMOUNT 0x01000000 /* unmount in progress */ #define MNTK_MWAIT 0x02000000 /* waiting for unmount to finish */ #define MNTK_WANTRDWR 0x04000000 /* upgrade to read/write requested */ #if REV_ENDIAN_FS #define MNT_REVEND 0x08000000 /* Reverse endian FS */ #endif /* REV_ENDIAN_FS */ /* * Sysctl CTL_VFS definitions. * * Second level identifier specifies which filesystem. Second level * identifier VFS_GENERIC returns information about all filesystems. */ #define VFS_GENERIC 0 /* generic filesystem information */ #define VFS_NUMMNTOPS 1 /* int: total num of vfs mount/unmount operations */ /* * Third level identifiers for VFS_GENERIC are given below; third * level identifiers for specific filesystems are given in their * mount specific header files. */ #define VFS_MAXTYPENUM 1 /* int: highest defined filesystem type */ #define VFS_CONF 2 /* struct: vfsconf for filesystem given as next argument */ /* * Flags for various system call interfaces. * * waitfor flags to vfs_sync() and getfsstat() */ #define MNT_WAIT 1 /* synchronously wait for I/O to complete */ #define MNT_NOWAIT 2 /* start all I/O, but do not wait for it */ /* * Generic file handle */ struct fhandle { fsid_t fh_fsid; /* File system id of mount point */ struct fid fh_fid; /* File sys specific id */ }; typedef struct fhandle fhandle_t; /* * Export arguments for local filesystem mount calls. */ struct export_args { int ex_flags; /* export related flags */ uid_t ex_root; /* mapping for root uid */ struct ucred ex_anon; /* mapping for anonymous user */ struct sockaddr *ex_addr; /* net address to which exported */ int ex_addrlen; /* and the net address length */ struct sockaddr *ex_mask; /* mask of valid bits in saddr */ int ex_masklen; /* and the smask length */ }; #ifdef __APPLE_API_UNSTABLE /* * Filesystem configuration information. One of these exists for each * type of filesystem supported by the kernel. These are searched at * mount time to identify the requested filesystem. */ struct vfsconf { struct vfsops *vfc_vfsops; /* filesystem operations vector */ char vfc_name[MFSNAMELEN]; /* filesystem type name */ int vfc_typenum; /* historic filesystem type number */ int vfc_refcount; /* number mounted of this type */ int vfc_flags; /* permanent flags */ int (*vfc_mountroot)(void); /* if != NULL, routine to mount root */ struct vfsconf *vfc_next; /* next in list */ }; #endif /*__APPLE_API_UNSTABLE */ #ifdef KERNEL #ifdef __APPLE_API_UNSTABLE extern int maxvfsconf; /* highest defined filesystem type */ extern struct vfsconf *vfsconf; /* head of list of filesystem types */ extern int maxvfsslots; /* Maximum slots available to be used */ extern int numused_vfsslots; /* number of slots already used */ int vfsconf_add __P((struct vfsconf *)); int vfsconf_del __P((char *)); /* * Operations supported on mounted file system. */ #ifdef __STDC__ struct nameidata; struct mbuf; #endif struct vfsops { int (*vfs_mount) __P((struct mount *mp, char *path, caddr_t data, struct nameidata *ndp, struct proc *p)); int (*vfs_start) __P((struct mount *mp, int flags, struct proc *p)); int (*vfs_unmount) __P((struct mount *mp, int mntflags, struct proc *p)); int (*vfs_root) __P((struct mount *mp, struct vnode **vpp)); int (*vfs_quotactl) __P((struct mount *mp, int cmds, uid_t uid, caddr_t arg, struct proc *p)); int (*vfs_statfs) __P((struct mount *mp, struct statfs *sbp, struct proc *p)); int (*vfs_sync) __P((struct mount *mp, int waitfor, struct ucred *cred, struct proc *p)); int (*vfs_vget) __P((struct mount *mp, void *ino, struct vnode **vpp)); int (*vfs_fhtovp) __P((struct mount *mp, struct fid *fhp, struct mbuf *nam, struct vnode **vpp, int *exflagsp, struct ucred **credanonp)); int (*vfs_vptofh) __P((struct vnode *vp, struct fid *fhp)); int (*vfs_init) __P((struct vfsconf *)); int (*vfs_sysctl) __P((int *, u_int, void *, size_t *, void *, size_t, struct proc *)); }; #define VFS_MOUNT(MP, PATH, DATA, NDP, P) \ (*(MP)->mnt_op->vfs_mount)(MP, PATH, DATA, NDP, P) #define VFS_START(MP, FLAGS, P) (*(MP)->mnt_op->vfs_start)(MP, FLAGS, P) #define VFS_UNMOUNT(MP, FORCE, P) (*(MP)->mnt_op->vfs_unmount)(MP, FORCE, P) #define VFS_ROOT(MP, VPP) (*(MP)->mnt_op->vfs_root)(MP, VPP) #define VFS_QUOTACTL(MP,C,U,A,P) (*(MP)->mnt_op->vfs_quotactl)(MP, C, U, A, P) #define VFS_STATFS(MP, SBP, P) (*(MP)->mnt_op->vfs_statfs)(MP, SBP, P) #define VFS_SYNC(MP, WAIT, C, P) (*(MP)->mnt_op->vfs_sync)(MP, WAIT, C, P) #define VFS_VGET(MP, INO, VPP) (*(MP)->mnt_op->vfs_vget)(MP, INO, VPP) #define VFS_FHTOVP(MP, FIDP, NAM, VPP, EXFLG, CRED) \ (*(MP)->mnt_op->vfs_fhtovp)(MP, FIDP, NAM, VPP, EXFLG, CRED) #define VFS_VPTOFH(VP, FIDP) (*(VP)->v_mount->mnt_op->vfs_vptofh)(VP, FIDP) /* * Network address lookup element */ struct netcred { struct radix_node netc_rnodes[2]; int netc_exflags; struct ucred netc_anon; }; /* * Network export information */ struct netexport { struct netcred ne_defexported; /* Default export */ struct radix_node_head *ne_rtable[AF_MAX+1]; /* Individual exports */ }; /* * exported vnode operations */ int vfs_busy __P((struct mount *, int, struct slock *, struct proc *)); int vfs_export __P((struct mount *, struct netexport *, struct export_args *)); struct netcred *vfs_export_lookup __P((struct mount *, struct netexport *, struct mbuf *)); void vfs_getnewfsid __P((struct mount *)); struct mount *vfs_getvfs __P((fsid_t *)); int vfs_mountedon __P((struct vnode *)); void vfs_unbusy __P((struct mount *, struct proc *)); #ifdef __APPLE_API_PRIVATE int vfs_mountroot __P((void)); int vfs_rootmountalloc __P((char *, char *, struct mount **)); void vfs_unmountall __P((void)); #endif /* __APPLE_API_PRIVATE */ extern CIRCLEQ_HEAD(mntlist, mount) mountlist; extern struct slock mountlist_slock; #endif /* __APPLE_API_UNSTABLE */ #else /* !KERNEL */ #include <sys/cdefs.h> __BEGIN_DECLS int fstatfs __P((int, struct statfs *)); int getfh __P((const char *, fhandle_t *)); int getfsstat __P((struct statfs *, long, int)); int getmntinfo __P((struct statfs **, int)); int mount __P((const char *, const char *, int, void *)); int statfs __P((const char *, struct statfs *)); int unmount __P((const char *, int)); int getvfsbyname __P((const char *, struct vfsconf *)); __END_DECLS #endif /* KERNEL */ #endif /* !_SYS_MOUNT_H_ */