vop_vptofh(9) [freebsd man page]

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

NAME

     VOP_VPTOFH -- turn a vnode into an NFS filehandle

SYNOPSIS

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

     int
     VOP_VPTOFH(struct vnode *vp, struct fid *fhp);

DESCRIPTION

     This is used by the NFS server to create an opaque filehandle which uniquely identifies the file and which can be used by an NFS client to
     access the file in the future.

     Its arguments are:

     vp   The vnode to make a filehandle for.

     fhp  Return parameter for the filehandle.

SEE ALSO

     VFS(9), VFS_FHTOVP(9), vnode(9)

AUTHORS

     This manual page was written by Doug Rabson.

BSD
								 February 16, 2007							       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