xref: /freebsd/share/man/man9/VOP_READLINK.9 (revision a8445737e740901f5f2c8d24c12ef7fc8b00134e)
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3.\" Copyright (c) 1996 Doug Rabson
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29.\" $Id: VOP_READLINK.9,v 1.5 1997/09/29 10:10:55 wosch Exp $
30.\"
31.Dd July 24, 1996
32.Os
33.Dt VOP_READLINK 9
34.Sh NAME
35.Nm VOP_READLINK
36.Nd read the target of a symbolic link
37.Sh SYNOPSIS
38.Fd #include <sys/param.h>
39.Fd #include <sys/vnode.h>
40.Fd #include <sys/uio.h>
41.Ft int
42.Fn VOP_READLINK "struct vnode *vp" "struct uio *uio" "struct ucred *cred"
43.Sh DESCRIPTION
44This reads the target pathname of a symbolic link
45.Bl -tag -width uio
46.It Ar vp
47the vnode of the symlink
48.It Ar uio
49the location of the data to be read or written
50.It Ar cnp
51the credentials of the caller
52.El
53.Sh LOCKS
54The vnode should be locked on entry and will still be locked on exit.
55.Sh RETURN VALUES
56Zero is returned on success, otherwise an error code is returned.
57.Sh PSEUDOCODE
58.Bd -literal
59int
60vop_readlink(struct vnode *vp, struct uio *uio, struct ucred *cred)
61{
62    int error = 0;
63
64    /*
65     * Read the target of the symlink.
66     */
67    ...;
68
69    return error;
70}
71.Ed
72.Sh ERRORS
73.Bl -tag -width Er
74.It Bq Er EIO
75a read error occurred while reading the contents of the symlink
76.El
77.Sh SEE ALSO
78.Xr uiomove 9 ,
79.Xr vnode 9
80.Sh AUTHORS
81This man page was written by
82.An Doug Rabson .
83