Manual Pages  — VOP_LINK

VOP_LINK – create a new name for a file

SYNOPSIS DESCRIPTION LOCKS RETURN VALUES ERRORS SEE ALSO AUTHORS

#include <sys/param.h>

#include <sys/vnode.h>

int
VOP_LINK(struct vnode *dvp, struct vnode *vp, struct componentname *cnp);

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

Its arguments are:

dvp
	The vnode of the directory.
vp
	The vnode of the file to be linked.
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.

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

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

[EMLINK]
	The file has too many links.
[EPERM]
	The file is immutable.
[EXDEV]
	A hard link is not possible between different file systems.

This manual page was originally written by Doug Rabson.