scoutos / prex-0.9.0 / include / sys / mount.h @ 03e9c04a
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/*-
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* Copyright (c) 1989, 1991, 1993
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* The Regents of the University of California. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* @(#)mount.h 8.21 (Berkeley) 5/20/95
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*/
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#ifndef _SYS_MOUNT_H_
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#define _SYS_MOUNT_H_
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#include <sys/cdefs.h> |
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#include <sys/list.h> |
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#include <sys/vnode.h> |
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#include <sys/syslimits.h> |
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typedef struct { int32_t val[2]; } fsid_t; /* file system id type */ |
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/*
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* file system statistics
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*/
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struct statfs {
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short f_type; /* filesystem type number */ |
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short f_flags; /* copy of mount flags */ |
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long f_bsize; /* fundamental file system block size */ |
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long f_blocks; /* total data blocks in file system */ |
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long f_bfree; /* free blocks in fs */ |
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long f_bavail; /* free blocks avail to non-superuser */ |
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long f_files; /* total file nodes in file system */ |
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long f_ffree; /* free file nodes in fs */ |
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fsid_t f_fsid; /* file system id */
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long f_namelen; /* maximum filename length */ |
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}; |
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/*
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* Mount data
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*/
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struct mount {
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struct list m_link; /* link to next mount point */ |
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struct vfsops *m_op; /* pointer to vfs operation */ |
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int m_flags; /* mount flag */ |
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int m_count; /* reference count */ |
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char m_path[PATH_MAX]; /* mounted path */ |
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dev_t m_dev; /* mounted device */
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struct vnode *m_root; /* root vnode */ |
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struct vnode *m_covered; /* vnode covered on parent fs */ |
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void *m_data; /* private data for fs */ |
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}; |
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typedef struct mount *mount_t; |
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/*
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* Mount flags.
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*
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* Unmount uses MNT_FORCE flag.
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*/
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#define MNT_RDONLY 0x00000001 /* read only filesystem */ |
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#define MNT_SYNCHRONOUS 0x00000002 /* file system written synchronously */ |
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#define MNT_NOEXEC 0x00000004 /* can't exec from filesystem */ |
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#define MNT_NOSUID 0x00000008 /* don't honor setuid bits on fs */ |
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#define MNT_NODEV 0x00000010 /* don't interpret special files */ |
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#define MNT_UNION 0x00000020 /* union with underlying filesystem */ |
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#define MNT_ASYNC 0x00000040 /* file system written asynchronously */ |
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/*
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* exported mount flags.
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*/
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#define MNT_EXRDONLY 0x00000080 /* exported read only */ |
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#define MNT_EXPORTED 0x00000100 /* file system is exported */ |
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#define MNT_DEFEXPORTED 0x00000200 /* exported to the world */ |
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#define MNT_EXPORTANON 0x00000400 /* use anon uid mapping for everyone */ |
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#define MNT_EXKERB 0x00000800 /* exported with Kerberos uid mapping */ |
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/*
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* Flags set by internal operations.
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*/
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#define MNT_LOCAL 0x00001000 /* filesystem is stored locally */ |
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#define MNT_QUOTA 0x00002000 /* quotas are enabled on filesystem */ |
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#define MNT_ROOTFS 0x00004000 /* identifies the root filesystem */ |
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/*
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* Mask of flags that are visible to statfs()
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*/
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#define MNT_VISFLAGMASK 0x0000ffff |
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/*
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* Filesystem type switch table.
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*/
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struct vfssw {
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char *vs_name; /* name of file system */ |
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int (*vs_init)(void); /* initialize routine */ |
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struct vfsops *vs_op; /* pointer to vfs operation */ |
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}; |
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/*
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* Operations supported on virtual file system.
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*/
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struct vfsops {
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int (*vfs_mount) (mount_t, char *, int, void *); |
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int (*vfs_unmount) (mount_t);
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int (*vfs_sync) (mount_t);
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int (*vfs_vget) (mount_t, vnode_t);
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int (*vfs_statfs) (mount_t, struct statfs *); |
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struct vnops *vfs_vnops;
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}; |
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typedef int (*vfsop_mount_t)(mount_t, char *, int, void *); |
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typedef int (*vfsop_umount_t)(mount_t); |
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typedef int (*vfsop_sync_t)(mount_t); |
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typedef int (*vfsop_vget_t)(mount_t, vnode_t); |
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typedef int (*vfsop_statfs_t)(mount_t, struct statfs *); |
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/*
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* VFS interface
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*/
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#define VFS_MOUNT(MP, DEV, FL, DAT) ((MP)->m_op->vfs_mount)(MP, DEV, FL, DAT)
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#define VFS_UNMOUNT(MP) ((MP)->m_op->vfs_unmount)(MP)
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#define VFS_SYNC(MP) ((MP)->m_op->vfs_sync)(MP)
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#define VFS_VGET(MP, VP) ((MP)->m_op->vfs_vget)(MP, VP)
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#define VFS_STATFS(MP, SFP) ((MP)->m_op->vfs_statfs)(MP, SFP)
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#define VFS_NULL ((void *)vfs_null) |
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__BEGIN_DECLS |
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int mount(const char *, const char *, const char *, int, void *); |
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int umount(const char *); |
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int vfs_nullop(void); |
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int vfs_einval(void); |
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__END_DECLS |
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#endif /* !_SYS_MOUNT_H_ */ |