xref: /freebsd/share/man/man9/VOP_READLINK.9 (revision 0640e9e01b3e93e057629a848b7870f30427c609)

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.\" Copyright (c) 1996 Doug Rabson
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.Dd July 24, 1996
.Os
.Dt VOP_READLINK 9
.Sh NAME
.Nm VOP_READLINK
.Nd read the target of a symbolic link
.Sh SYNOPSIS
.In sys/param.h
.In sys/vnode.h
.In sys/uio.h
.Ft int
.Fn VOP_READLINK "struct vnode *vp" "struct uio *uio" "struct ucred *cred"
.Sh DESCRIPTION
This reads the target pathname of a symbolic link
.Bl -tag -width uio
.It Fa vp
the vnode of the symlink
.It Fa uio
the location of the data to be read or written
.It Fa cred
the credentials of the caller
.El
.Sh LOCKS
The vnode should be locked on entry and will still be locked on exit.
.Sh RETURN VALUES
Zero is returned on success, otherwise an error code is returned.
.Sh PSEUDOCODE
.Bd -literal
int
vop_readlink(struct vnode *vp, struct uio *uio, struct ucred *cred)
{
    int error = 0;

    /*
     * Read the target of the symlink.
     */
    ...;

    return error;
}
.Ed
.Sh ERRORS
.Bl -tag -width Er
.It Bq Er EIO
A read error occurred while reading the contents of the symlink.
.El
.Sh SEE ALSO
.Xr uiomove 9 ,
.Xr vnode 9
.Sh AUTHORS
This man page was written by
.An Doug Rabson .