BSD 4_3_Net_2 release

[unix-history] / usr / src / sys / sys / mount.h

diff --git a/usr/src/sys/sys/mount.h b/usr/src/sys/sys/mount.h
index 4a43f5c..5f2f418 100644 (file)
--- a/usr/src/sys/sys/mount.h
+++ b/usr/src/sys/sys/mount.h
@@ -2,19 +2,35 @@
  * Copyright (c) 1989 The Regents of the University of California.
  * All rights reserved.
  *
  * Copyright (c) 1989 The Regents of the University of California.
  * All rights reserved.
  *

- * Redistribution and use in source and binary forms are permitted
- * provided that the above copyright notice and this paragraph are
- * duplicated in all such forms and that any documentation,
- * advertising materials, and other materials related to such
- * distribution and use acknowledge that the software was developed
- * by the University of California, Berkeley.  The name of the
- * University may not be used to endorse or promote products derived
- * from this software without specific prior written permission.
- * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
- * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
- * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
+ * 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.

  *
  *

- *     @(#)mount.h     7.5 (Berkeley) %G%
+ * 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     7.22 (Berkeley) 6/3/91

  */
 
 typedef quad fsid_t;                   /* file system id type */
  */
 
 typedef quad fsid_t;                   /* file system id type */


@@ -27,9 +43,42 @@ typedef quad fsid_t;                 /* file system id type */
 
 struct fid {
        u_short         fid_len;                /* length of data in bytes */
 
 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) */
 };
 
        char            fid_data[MAXFIDSZ];     /* data (variable length) */
 };
 

+/*
+ * file system statistics
+ */
+
+#define MNAMELEN 90    /* length of buffer for returned name */
+
+struct statfs {
+       short   f_type;                 /* type of filesystem (see below) */
+       short   f_flags;                /* copy of mount flags */
+       long    f_fsize;                /* fundamental file system block size */
+       long    f_bsize;                /* 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 */
+       long    f_spare[9];             /* 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
+#define        MOUNT_NFS       2
+#define        MOUNT_MFS       3
+#define        MOUNT_PC        4
+#define        MOUNT_MAXTYPE   4
+

 /*
  * Structure per mounted file system.
  * Each mounted file system has an array of
 /*
  * Structure per mounted file system.
  * Each mounted file system has an array of


@@ -37,68 +86,102 @@ struct fid {
  * The file systems are put on a doubly linked list.
  */
 struct mount {
  * The file systems are put on a doubly linked list.
  */
 struct mount {

-       struct mount    *m_next;                /* next in mount list */
-       struct mount    *m_prev;                /* prev in mount list */
-       struct vfsops   *m_op;                  /* operations on fs */
-       struct vnode    *m_vnodecovered;        /* vnode we mounted on */
-       int             m_flag;                 /* flags */
-       long            m_fsize;                /* fundamental block size */
-       long            m_bsize;                /* optimal transfer size */
-       fsid_t          m_fsid;                 /* identifier */
-       uid_t           m_exroot;               /* exported mapping for uid 0 */
-       qaddr_t         m_data;                 /* private data */
+       struct mount    *mnt_next;              /* next in mount list */
+       struct mount    *mnt_prev;              /* prev in mount list */
+       struct vfsops   *mnt_op;                /* operations on fs */
+       struct vnode    *mnt_vnodecovered;      /* vnode we mounted on */
+       struct vnode    *mnt_mounth;            /* list of vnodes this mount */
+       int             mnt_flag;               /* flags */
+       uid_t           mnt_exroot;             /* exported mapping for uid 0 */
+       struct statfs   mnt_stat;               /* cache of filesystem stats */
+       qaddr_t         mnt_data;               /* private data */

 };
 
 /*
  * Mount flags.
  */
 };
 
 /*
  * Mount flags.
  */

-#define        M_RDONLY        0x01            /* read only filesystem */
-#define        M_SYNCHRONOUS   0x02            /* file system written synchronously */
-#define        M_NOEXEC        0x04            /* can't exec from filesystem */
-#define        M_NOSUID        0x08            /* don't honor setuid bits on fs */
-#define        M_NODEV         0x10            /* don't interpret special files */
+#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 */
+

 /*
  * exported mount flags.
  */
 /*
  * exported mount flags.
  */

-#define        M_EXPORTED      0x100           /* file system is exported */
-#define        M_EXRDONLY      0x200           /* exported read only */
+#define        MNT_EXPORTED    0x00000100      /* file system is exported */
+#define        MNT_EXRDONLY    0x00000200      /* exported read only */
+
+/*
+ * Flags set by internal operations.
+ */
+#define        MNT_LOCAL       0x00001000      /* filesystem is stored locally */
+#define        MNT_QUOTA       0x00002000      /* quotas are enabled on filesystem */
+
+/*
+ * Mask of flags that are visible to statfs()
+ */
+#define        MNT_VISFLAGMASK 0x0000ffff
+

 /*
  * filesystem control flags.
  *
 /*
  * filesystem control flags.
  *

- * M_MLOCK lock the mount entry so that name lookup cannot proceed
+ * 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.
  */
  * past the mount point.  This keeps the subtree stable during mounts
  * and unmounts.
  */

-#define        M_MLOCK         0x1000          /* lock so that subtree is stable */
-#define        M_MWAIT         0x2000          /* someone is waiting for lock */
+#define        MNT_UPDATE      0x00010000      /* not a real mount, just an update */
+#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 */

 
 /*
  * Operations supported on mounted file system.
  */
 
 /*
  * Operations supported on mounted file system.
  */

+#ifdef KERNEL
+#ifdef __STDC__
+struct nameidata;
+#endif
+

 struct vfsops {
 struct vfsops {

-       int     (*vfs_mount)(   /* mp, path, data, ndp */ );
-       int     (*vfs_start)(   /* mp, flags */ );
-       int     (*vfs_unmount)( /* mp, forcibly */ );
-       int     (*vfs_root)(    /* mp, vpp */ );
-       int     (*vfs_statfs)(  /* mp, sbp */ );
-       int     (*vfs_sync)(    /* mp, waitfor */ );
-       int     (*vfs_fhtovp)(  /* mp, fidp, vpp */ );
-       int     (*vfs_vptofh)(  /* vp, fidp */ );
+       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 uid,             should be uid_t */
+       int     (*vfs_quotactl) __P((struct mount *mp, int cmds, int 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));
+       int     (*vfs_fhtovp)   __P((struct mount *mp, struct fid *fhp,
+                                   struct vnode **vpp));
+       int     (*vfs_vptofh)   __P((struct vnode *vp, struct fid *fhp));
+       int     (*vfs_init)     __P(());

 };
 
 };
 

-#define VFS_MOUNT(MP, PATH, DATA, NDP) \
-       (*(MP)->m_op->vfs_mount)(MP, PATH, DATA, NDP)
-#define VFS_START(MP, FLAGS)     (*(MP)->m_op->vfs_start)(MP, FLAGS)
-#define VFS_UNMOUNT(MP, FORCIBLY) (*(MP)->m_op->vfs_unmount)(MP, FORCIBLY)
-#define VFS_ROOT(MP, VPP)        (*(MP)->m_op->vfs_root)(MP, VPP)
-#define VFS_STATFS(MP, SBP)      (*(MP)->m_op->vfs_statfs)(MP, SBP)
-#define VFS_SYNC(MP, WAITFOR)    (*(MP)->m_op->vfs_sync)(MP, WAITFOR)
-#define VFS_FHTOVP(MP, FIDP, VPP) (*(MP)->m_op->vfs_fhtovp)(MP, FIDP, VPP)
-#define        VFS_VPTOFH(VP, FIDP)      (*(VP)->v_mount->m_op->vfs_vptofh)(VP, FIDP)
+#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, WAITFOR)    (*(MP)->mnt_op->vfs_sync)(MP, WAITFOR)
+#define VFS_FHTOVP(MP, FIDP, VPP) (*(MP)->mnt_op->vfs_fhtovp)(MP, FIDP, VPP)
+#define        VFS_VPTOFH(VP, FIDP)      (*(VP)->v_mount->mnt_op->vfs_vptofh)(VP, FIDP)
+#endif /* KERNEL */

 
 /*
 
 /*

+ * Flags for various system call interfaces.
+ *

  * forcibly flags for vfs_umount().
  * forcibly flags for vfs_umount().

- * waitfor flags to vfs_sync()
+ * waitfor flags to vfs_sync() and getfsstat()

  */
 #define MNT_FORCE      1
 #define MNT_NOFORCE    2
  */
 #define MNT_FORCE      1
 #define MNT_NOFORCE    2


@@ -106,60 +189,31 @@ struct vfsops {
 #define MNT_NOWAIT     2
 
 /*
 #define MNT_NOWAIT     2
 
 /*

- * file system statistics
+ * Generic file handle

  */
  */

-
-#define MNAMELEN 90    /* length of buffer for returned name */
-
-struct statfs {
-       short   f_type;                 /* type of filesystem (see below) */
-       short   f_flags;                /* copy of mount flags */
-       long    f_fsize;                /* fundamental file system block size */
-       long    f_bsize;                /* 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 */
-       long    f_spare[9];             /* spare for later */
-       char    f_mntonname[MNAMELEN];  /* directory on which mounted */
-       char    f_mntfromname[MNAMELEN];/* mounted filesystem */
+struct fhandle {
+       fsid_t  fh_fsid;        /* File system id of mount point */
+       struct  fid fh_fid;     /* Id of file */

 };
 };

-/*
- * File system types.
- */
-#define        MOUNT_NONE      0
-#define        MOUNT_UFS       1
-#define        MOUNT_NFS       2
-#define MOUNT_MFS      3
-#define        MOUNT_PC        4
-#define        MOUNT_MAXTYPE   4
+typedef struct fhandle fhandle_t;

 
 /*
  * Arguments to mount UFS
  */
 struct ufs_args {
 
 /*
  * Arguments to mount UFS
  */
 struct ufs_args {

-       char    *fspec;
-};
-
-/*
- * Generic file handle
- */
-struct fhandle {
-       fsid_t  fh_fsid;        /* File system id of mount point */
-       struct  fid fh_fid;     /* Id of file */
+       char    *fspec;         /* block special device to mount */
+       int     exflags;        /* export related flags */
+       uid_t   exroot;         /* mapping for root uid */

 };
 };

-typedef struct fhandle fhandle_t;

 
 #ifdef MFS
 /*
  * Arguments to mount MFS
  */
 struct mfs_args {
 
 #ifdef MFS
 /*
  * Arguments to mount MFS
  */
 struct mfs_args {

-       char    *name;
-       caddr_t base;
-       u_long size;
+       char    *name;          /* name to export for statfs */
+       caddr_t base;           /* base address of file system in memory */
+       u_long size;            /* size of file system */

 };
 #endif MFS
 
 };
 #endif MFS
 


@@ -177,36 +231,58 @@ typedef union nfsv2fh nfsv2fh_t;
  * Arguments to mount NFS
  */
 struct nfs_args {
  * Arguments to mount NFS
  */
 struct nfs_args {

-       struct sockaddr_in      *addr;          /* file server address */
-       nfsv2fh_t               *fh;            /* File handle to be mounted */
-       int                     flags;          /* flags */
-       int                     wsize;          /* write size in bytes */
-       int                     rsize;          /* read size in bytes */
-       int                     timeo;          /* initial timeout in .1 secs */
-       int                     retrans;        /* times to retry send */
-       char                    *hostname;      /* server's name */
+       struct sockaddr *addr;          /* file server address */
+       int             sotype;         /* Socket type */
+       int             proto;          /* and Protocol */
+       nfsv2fh_t       *fh;            /* File handle to be mounted */
+       int             flags;          /* flags */
+       int             wsize;          /* write size in bytes */
+       int             rsize;          /* read size in bytes */
+       int             timeo;          /* initial timeout in .1 secs */
+       int             retrans;        /* times to retry send */
+       char            *hostname;      /* server's name */

 };
 /*
  * NFS mount option flags
  */
 };
 /*
  * NFS mount option flags
  */

-#define        NFSMNT_SOFT     0x001   /* soft mount (hard is default) */
-#define        NFSMNT_WSIZE    0x002   /* set write size */
-#define        NFSMNT_RSIZE    0x004   /* set read size */
-#define        NFSMNT_TIMEO    0x008   /* set initial timeout */
-#define        NFSMNT_RETRANS  0x010   /* set number of request retrys */
-#define        NFSMNT_HOSTNAME 0x020   /* set hostname for error printf */
-#define        NFSMNT_INT      0x040   /* allow interrupts on hard mount */
+#define        NFSMNT_SOFT     0x0001  /* soft mount (hard is default) */
+#define        NFSMNT_WSIZE    0x0002  /* set write size */
+#define        NFSMNT_RSIZE    0x0004  /* set read size */
+#define        NFSMNT_TIMEO    0x0008  /* set initial timeout */
+#define        NFSMNT_RETRANS  0x0010  /* set number of request retrys */
+#define        NFSMNT_HOSTNAME 0x0020  /* set hostname for error printf */
+#define        NFSMNT_INT      0x0040  /* allow interrupts on hard mount */
+#define        NFSMNT_NOCONN   0x0080  /* Don't Connect the socket */
+#define        NFSMNT_SCKLOCK  0x0100  /* Lock socket against others */
+#define        NFSMNT_WANTSCK  0x0200  /* Want a socket lock */
+#define        NFSMNT_SPONGY   0x0400  /* spongy mount (soft for stat and lookup) */
+#define        NFSMNT_COMPRESS 0x0800  /* Compress nfs rpc xdr */
+#define        NFSMNT_LOCKBITS (NFSMNT_SCKLOCK | NFSMNT_WANTSCK)

 #endif NFS
 
 #ifdef KERNEL
 /*
  * exported vnode operations
  */
 #endif NFS
 
 #ifdef KERNEL
 /*
  * exported vnode operations
  */

-extern int     vfs_add();              /* add a new vfs to mounted vfs list */
-extern void    vfs_remove();           /* remove a vfs from mounted vfs list */
-extern int     vfs_lock();             /* lock a vfs */
-extern void    vfs_unlock();           /* unlock a vfs */
-extern struct  mount *getvfs();        /* return vfs given fsid */
-extern struct  mount *rootfs;          /* ptr to root mount structure */
-extern struct  vfsops *vfssw[];        /* mount filesystem type switch table */
-#endif
+void   vfs_remove __P((struct mount *mp)); /* remove a vfs from mount list */
+int    vfs_lock __P((struct mount *mp));   /* lock a vfs */
+void   vfs_unlock __P((struct mount *mp)); /* unlock a vfs */
+struct mount *getvfs __P((fsid_t *fsid));  /* return vfs given fsid */
+struct mount *rootfs;                      /* ptr to root mount structure */
+struct vfsops *vfssw[];                    /* mount 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));
+__END_DECLS
+
+#endif /* KERNEL */