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Diffstat (limited to 'c/src/libnetworking/sys/mount.h')
-rw-r--r-- | c/src/libnetworking/sys/mount.h | 531 |
1 files changed, 531 insertions, 0 deletions
diff --git a/c/src/libnetworking/sys/mount.h b/c/src/libnetworking/sys/mount.h new file mode 100644 index 0000000000..a6254e302d --- /dev/null +++ b/c/src/libnetworking/sys/mount.h @@ -0,0 +1,531 @@ +/* + * 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 8.13 (Berkeley) 3/27/94 + * $Id$ + */ + +#ifndef _SYS_MOUNT_H_ +#define _SYS_MOUNT_H_ + +#ifndef KERNEL +#include <sys/ucred.h> +#endif +#include <sys/queue.h> + +typedef struct fsid { long 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 MNAMELEN 90 /* length of buffer for returned name */ + +struct statfs { + long f_spare2; /* placeholder */ + 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 */ + int f_type; /* type of filesystem (see below) */ + int f_flags; /* copy of mount flags */ + long f_spare[6]; /* spare for later */ + char f_mntonname[MNAMELEN]; /* directory on which mounted */ + char f_mntfromname[MNAMELEN];/* mounted filesystem */ +}; + +/* + * File system types. + */ +#define MOUNT_NONE 0 +#define MOUNT_UFS 1 /* Fast Filesystem */ +#define MOUNT_NFS 2 /* Sun-compatible Network Filesystem */ +#define MOUNT_MFS 3 /* Memory-based Filesystem */ +#define MOUNT_MSDOS 4 /* MS/DOS Filesystem */ +#define MOUNT_LFS 5 /* Log-based Filesystem */ +#define MOUNT_LOFS 6 /* Loopback Filesystem */ +#define MOUNT_FDESC 7 /* File Descriptor Filesystem */ +#define MOUNT_PORTAL 8 /* Portal Filesystem */ +#define MOUNT_NULL 9 /* Minimal Filesystem Layer */ +#define MOUNT_UMAP 10 /* User/Group Identifier Remapping Filesystem */ +#define MOUNT_KERNFS 11 /* Kernel Information Filesystem */ +#define MOUNT_PROCFS 12 /* /proc Filesystem */ +#define MOUNT_AFS 13 /* Andrew Filesystem */ +#define MOUNT_CD9660 14 /* ISO9660 (aka CDROM) Filesystem */ +#define MOUNT_UNION 15 /* Union (translucent) Filesystem */ +#define MOUNT_DEVFS 16 /* existing device Filesystem */ +#define MOUNT_EXT2FS 17 /* Linux EXT2FS */ +#define MOUNT_TFS 18 /* Netcon Novell filesystem */ +#define MOUNT_CFS 19 /* Coda filesystem */ +#define MOUNT_MAXTYPE 19 + +#define INITMOUNTNAMES { \ + "none", /* 0 MOUNT_NONE */ \ + "ufs", /* 1 MOUNT_UFS */ \ + "nfs", /* 2 MOUNT_NFS */ \ + "mfs", /* 3 MOUNT_MFS */ \ + "msdos", /* 4 MOUNT_MSDOS */ \ + "lfs", /* 5 MOUNT_LFS */ \ + "lofs", /* 6 MOUNT_LOFS */ \ + "fdesc", /* 7 MOUNT_FDESC */ \ + "portal", /* 8 MOUNT_PORTAL */ \ + "null", /* 9 MOUNT_NULL */ \ + "umap", /* 10 MOUNT_UMAP */ \ + "kernfs", /* 11 MOUNT_KERNFS */ \ + "procfs", /* 12 MOUNT_PROCFS */ \ + "afs", /* 13 MOUNT_AFS */ \ + "cd9660", /* 14 MOUNT_CD9660 */ \ + "union", /* 15 MOUNT_UNION */ \ + "devfs", /* 16 MOUNT_DEVFS */ \ + "ext2fs", /* 17 MOUNT_EXT2FS */ \ + "tfs", /* 18 MOUNT_TFS */ \ + "cfs", /* 19 MOUNT_CFS */ \ + 0, /* 20 MOUNT_SPARE */ \ +} + +/* + * 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 */ + int mnt_flag; /* flags */ + int mnt_maxsymlinklen; /* max size of short symlink */ + struct statfs mnt_stat; /* cache of filesystem stats */ + qaddr_t mnt_data; /* private data */ +/* struct vfsconf *mnt_vfc; */ /* configuration info */ + time_t mnt_time; /* last time written*/ +}; + +/* + * Mount 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_NOATIME 0x10000000 /* Disable update of file access times */ + +/* + * exported 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_USER 0x00008000 /* mounted by a user */ + +/* + * Mask of flags that are visible to statfs() + */ +#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_USER|MNT_NOATIME) + +/* + * filesystem control flags. + * + * MNT_MLOCK lock the mount entry so that name lookup cannot proceed + * past the mount point. This keeps the subtree stable during mounts + * and unmounts. + */ +#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_MLOCK 0x00100000 /* lock so that subtree is stable */ +#define MNT_MWAIT 0x00200000 /* someone is waiting for lock */ +#define MNT_MPBUSY 0x00400000 /* scan of mount point in progress */ +#define MNT_MPWANT 0x00800000 /* waiting for mount point */ +#define MNT_UNMOUNT 0x01000000 /* unmount in progress */ +#define MNT_WANTRDWR 0x02000000 /* want upgrade to read/write */ + +/* + * used to get configured filesystems information + */ +#define VFS_MAXNAMELEN 32 +struct vfsconf { + void *vfc_vfsops; + char vfc_name[VFS_MAXNAMELEN]; + int vfc_index; + int vfc_refcount; + int vfc_flags; +}; + +/* + * NB: these flags refer to IMPLEMENTATION properties, not properties of + * any actual mounts; i.e., it does not make sense to change the flags. + */ +#define VFCF_STATIC 0x00000001 /* statically compiled into kernel */ +#define VFCF_NETWORK 0x00000002 /* may get data over the network */ +#define VFCF_READONLY 0x00000004 /* writes are not implemented */ +#define VFCF_SYNTHETIC 0x00000008 /* data does not represent real files */ +#define VFCF_LOOPBACK 0x00000010 /* aliases some other mounted FS */ +#define VFCF_UNICODE 0x00000020 /* stores file names as Unicode*/ + +/* + * Operations supported on mounted file system. + */ +#ifdef KERNEL + +extern int doforce; /* Flag to permit forcible unmounting. */ +extern struct vfsconf void_vfsconf; +extern struct vfsconf *vfsconf[]; + +#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, ino_t 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((void)); +}; + +#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) + +#ifdef VFS_LKM +#include <sys/conf.h> +#include <sys/exec.h> +#include <sys/sysent.h> +#include <sys/lkm.h> + +#define VFS_SET(vfsops, fsname, index, flags) \ + static struct vfsconf _fs_vfsconf = { \ + &vfsops, \ + #fsname, \ + index, \ + 0, \ + flags \ + }; \ + extern struct linker_set MODVNOPS; \ + MOD_VFS(#fsname,index,&MODVNOPS,&_fs_vfsconf); \ + int \ + fsname ## _mod(struct lkm_table *lkmtp, int cmd, int ver) { \ + DISPATCH(lkmtp, cmd, ver, lkm_nullcmd, lkm_nullcmd, lkm_nullcmd); } +#else + +#define VFS_SET(vfsops, fsname, index, flags) \ + static struct vfsconf _fs_vfsconf = { \ + &vfsops, \ + #fsname, \ + index, \ + 0, \ + flags | VFCF_STATIC \ + }; \ + DATA_SET(vfs_set,_fs_vfsconf) +#endif /* VFS_LKM */ + +#endif /* KERNEL */ + +/* + * Flags for various system call interfaces. + * + * waitfor flags to vfs_sync() and getfsstat() + */ +#define MNT_WAIT 1 +#define MNT_NOWAIT 2 + +/* + * 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; + +#ifdef KERNEL +#include <net/radix.h> +#include <sys/socket.h> /* XXX for AF_MAX */ + +/* + * 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 */ +}; +#endif /* KERNEL */ + +/* + * 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 */ +}; + +/* + * Arguments to mount UFS-based filesystems + */ +struct ufs_args { + char *fspec; /* block special device to mount */ + struct export_args export; /* network export information */ +}; + +#ifdef MFS +/* + * Arguments to mount MFS + */ +struct mfs_args { + char *fspec; /* name to export for statfs */ + struct export_args export; /* if exported MFSes are supported */ + caddr_t base; /* base of file system in memory */ + u_long size; /* size of file system */ +}; +#endif /* MFS */ + +#ifdef MSDOSFS +/* + * Arguments to mount MSDOS filesystems. + */ +struct msdosfs_args { + char *fspec; /* blocks special holding the fs to mount */ + struct export_args export; /* network export information */ + uid_t uid; /* uid that owns msdosfs files */ + gid_t gid; /* gid that owns msdosfs files */ + mode_t mask; /* mask to be applied for msdosfs perms */ +}; +#endif + +#ifdef CD9660 +/* + * Arguments to mount ISO 9660 filesystems. + */ +struct iso_args { + char *fspec; /* block special device to mount */ + struct export_args export; /* network export info */ + int flags; /* mounting flags, see below */ + int ssector; /* starting sector */ + +}; +#define ISOFSMNT_NORRIP 0x00000001 /* disable Rock Ridge Ext.*/ +#define ISOFSMNT_GENS 0x00000002 /* enable generation numbers */ +#define ISOFSMNT_EXTATT 0x00000004 /* enable extended attributes */ +#endif /* CD9660 */ + +#ifdef NFS +/* + * Arguments to mount NFS + */ +struct nfs_args { + struct sockaddr *addr; /* file server address */ + int addrlen; /* length of address */ + int sotype; /* Socket type */ + int proto; /* and Protocol */ + u_char *fh; /* File handle to be mounted */ + int fhsize; /* Size, in bytes, of fh */ + int flags; /* flags */ + int wsize; /* write size in bytes */ + int rsize; /* read size in bytes */ + int readdirsize; /* readdir size in bytes */ + int timeo; /* initial timeout in .1 secs */ + int retrans; /* times to retry send */ + int maxgrouplist; /* Max. size of group list */ + int readahead; /* # of blocks to readahead */ + int leaseterm; /* Term (sec) of lease */ + int deadthresh; /* Retrans threshold */ + char *hostname; /* server's name */ +}; + +/* + * NFS mount option flags + */ +#define NFSMNT_SOFT 0x00000001 /* soft mount (hard is default) */ +#define NFSMNT_WSIZE 0x00000002 /* set write size */ +#define NFSMNT_RSIZE 0x00000004 /* set read size */ +#define NFSMNT_TIMEO 0x00000008 /* set initial timeout */ +#define NFSMNT_RETRANS 0x00000010 /* set number of request retrys */ +#define NFSMNT_MAXGRPS 0x00000020 /* set maximum grouplist size */ +#define NFSMNT_INT 0x00000040 /* allow interrupts on hard mount */ +#define NFSMNT_NOCONN 0x00000080 /* Don't Connect the socket */ +#define NFSMNT_NQNFS 0x00000100 /* Use Nqnfs protocol */ +#define NFSMNT_NFSV3 0x00000200 /* Use NFS Version 3 protocol */ +#define NFSMNT_KERB 0x00000400 /* Use Kerberos authentication */ +#define NFSMNT_DUMBTIMR 0x00000800 /* Don't estimate rtt dynamically */ +#define NFSMNT_LEASETERM 0x00001000 /* set lease term (nqnfs) */ +#define NFSMNT_READAHEAD 0x00002000 /* set read ahead */ +#define NFSMNT_DEADTHRESH 0x00004000 /* set dead server retry thresh */ +#define NFSMNT_RESVPORT 0x00008000 /* Allocate a reserved port */ +#define NFSMNT_RDIRPLUS 0x00010000 /* Use Readdirplus for V3 */ +#define NFSMNT_READDIRSIZE 0x00020000 /* Set readdir size */ +#define NFSMNT_INTERNAL 0xfffc0000 /* Bits set internally */ +#define NFSMNT_HASWRITEVERF 0x00040000 /* Has write verifier for V3 */ +#define NFSMNT_GOTPATHCONF 0x00080000 /* Got the V3 pathconf info */ +#define NFSMNT_GOTFSINFO 0x00100000 /* Got the V3 fsinfo */ +#define NFSMNT_MNTD 0x00200000 /* Mnt server for mnt point */ +#define NFSMNT_DISMINPROG 0x00400000 /* Dismount in progress */ +#define NFSMNT_DISMNT 0x00800000 /* Dismounted */ +#define NFSMNT_SNDLOCK 0x01000000 /* Send socket lock */ +#define NFSMNT_WANTSND 0x02000000 /* Want above */ +#define NFSMNT_RCVLOCK 0x04000000 /* Rcv socket lock */ +#define NFSMNT_WANTRCV 0x08000000 /* Want above */ +#define NFSMNT_WAITAUTH 0x10000000 /* Wait for authentication */ +#define NFSMNT_HASAUTH 0x20000000 /* Has authenticator */ +#define NFSMNT_WANTAUTH 0x40000000 /* Wants an authenticator */ +#define NFSMNT_AUTHERR 0x80000000 /* Authentication error */ +#endif /* NFS */ + +#ifdef KERNEL +extern int (*mountroot) __P((void *)); +extern struct vfsops *mountrootvfsops; + +/* + * exported vnode operations + */ +int dounmount __P((struct mount *, int, struct proc *)); +struct mount *getvfs __P((fsid_t *)); /* return vfs given fsid */ +void getnewfsid __P((struct mount *, int)); +int vflush __P((struct mount *, struct vnode *, int)); +int vfs_export /* process mount export info */ + __P((struct mount *, struct netexport *, struct export_args *)); +struct netcred *vfs_export_lookup /* lookup host in fs export list */ + __P((struct mount *, struct netexport *, struct mbuf *)); +int vfs_lock __P((struct mount *)); /* lock a vfs */ +int vfs_mountedon __P((struct vnode *)); /* is a vfs mounted on vp */ +int vfs_mountroot __P((void *)); /* XXX goes away? */ +void vfs_msync __P((struct mount *, int)); +void vfs_unlock __P((struct mount *)); /* unlock a vfs */ +void vfs_unmountall __P((void)); +int vfs_busy __P((struct mount *)); /* mark a vfs busy */ +void vfs_unbusy __P((struct mount *)); /* mark a vfs not busy */ +extern CIRCLEQ_HEAD(mntlist, mount) mountlist; /* mounted filesystem list */ +extern struct vfsops *vfssw[]; /* filesystem type table */ + +#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((int, const char *, int, void *)); +int statfs __P((const char *, struct statfs *)); +int unmount __P((const char *, int)); + +/* C library stuff */ +struct vfsconf *getvfsbyname __P((const char *)); +struct vfsconf *getvfsbytype __P((int)); +struct vfsconf *getvfsent __P((void)); +void setvfsent __P((int)); +void endvfsent __P((void)); +int vfsisloadable __P((const char *)); +int vfsload __P((const char *)); +__END_DECLS + +#endif /* KERNEL */ + +#endif /* !_SYS_MOUNT_H_ */ |