VOP_LINK (9)

Leading comments

Copyright (c) 1996 Doug Rabson

All rights reserved.

This program is free software.

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 comments found at the beginning of the groff file "man9/VOP_LINK.9freebsd".)

NAME

VOP_LINK - create a new name for a file

SYNOPSIS

In sys/param.h In sys/vnode.h Ft int Fn VOP_LINK struct vnode *dvp struct vnode *vp struct componentname *cnp

DESCRIPTION

This links a new name in the specified directory to an existing file.

Its arguments are:

Fa dvp

The vnode of the directory.

Fa vp

The vnode of the file to be linked.

Fa cnp

Pathname information about the file.

The pathname info should not be released on exit because it is done by the caller. The directory and file vnodes should not be released on exit.

LOCKS

Fn VOP_LINK expects the directory and file vnodes to be locked on entry and will leave the vnodes locked on return.

RETURN VALUES

Zero is returned if the file was linked successfully, otherwise an error is returned.

ERRORS

Bq Er EMLINK

The file has too many links.

Bq Er EPERM

The file is immutable.

Bq Er EXDEV

A hard link is not possible between different file systems.

SEE ALSO

vn_lock9, vnode(9)

AUTHORS

This manual page was originally written by An Doug Rabson .