vfs_vget(9) [debian man page]

VFS_VGET(9)						   BSD Kernel Developer's Manual					       VFS_VGET(9)

NAME

     VFS_VGET -- convert an inode number to a vnode

SYNOPSIS

     #include <sys/param.h>
     #include <sys/mount.h>
     #include <sys/vnode.h>

     int
     VFS_VGET(struct mount *mp, ino_t ino, int flags, struct vnode **vpp);

DESCRIPTION

     The VFS_VGET() looks up or creates a vnode from a (mount, inode#) tupple.

     Its arguments are:

     mp     The mount point.

     ino    The inode representing the file.  This is a unique number assigned by the file system when vnodes are first created.

     flags  Additional locking flags to pass through to vget(9).

     vpp    Return parameter for the vnode.

     This is an optional file system entry-point for file systems mainly intended for NFS server use, but many file systems use it internally in
     VOP_LOOKUP(9) and similar.

     If the file system does not support this call, then it should return EOPNOTSUPP.

     Please see ffs_vget() in sys/ufs/ffs/ffs_vfsops.c for the canonical example.

SEE ALSO

     VFS(9), vget(9), vnode(9)

AUTHORS

     This manual page was written by Doug Rabson.

BSD
								  January 7, 2005							       BSD

VFS_FHTOVP(9)						   BSD Kernel Developer's Manual					     VFS_FHTOVP(9)

NAME

     VFS_FHTOVP -- turn an NFS filehandle into a vnode

SYNOPSIS

     #include <sys/param.h>
     #include <sys/mount.h>
     #include <sys/vnode.h>

     int
     VFS_FHTOVP(struct mount *mp, struct fid *fhp, struct vnode **vpp);

DESCRIPTION

     The VFS_FHTOVP() macro is used by the NFS server to turn an NFS filehandle into a vnode.

     The arguments it expects are:

     mp   The file system.

     fhp  The filehandle to convert.

     vpp  Return parameter for the new locked vnode.

     The contents of the filehandle are defined by the file system and are not examined by any other part of the system.  It should contain enough
     information to uniquely identify a file within the file system as well as noticing when a file has been removed and the file system resources
     have been reused for a new file.  For instance, UFS file system stores the inode number and inode generation counter in its filehandle.

     A call to VFS_FHTOVP() should generally be preceded by a call to VFS_CHECKEXP(9) to check if the file is accessible to the client.

RETURN VALUES

     The locked vnode for the file will be returned in *vpp.

SEE ALSO

     VFS(9), VFS_CHECKEXP(9), VOP_VPTOFH(9), vnode(9)

AUTHORS

     This manual page was written by Doug Rabson.

BSD
								  January 4, 2010							       BSD