.\"
.\" Copyright (c) 1999 Chris Costello
.\" All rights reserved.
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.\" modification, are permitted provided that the following conditions
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.\" $FreeBSD: release/10.0.0/lib/libc/sys/modnext.2 141846 2005-02-13 22:25:33Z ru $
.\"
.Dd September 28, 2000
.Dt MODNEXT 2
.Os
.Sh NAME
.Nm modnext
.Nd return the modid of the next kernel module
.Sh LIBRARY
.Lb libc
.Sh SYNOPSIS
.In sys/param.h
.In sys/module.h
.Ft int
.Fn modnext "int modid"
.Ft int
.Fn modfnext "int modid"
.Sh DESCRIPTION
The
.Fn modnext
system call
returns the modid of the next kernel module (that is, the one after
.Va modid )
or 0 if
.Va modid
is the last module in the list.
.Pp
If the
.Va modid
value is 0, then
.Fn modnext
will return the modid of the first module.
The
.Fn modfnext
system call
must always be given a valid modid.
.Sh RETURN VALUES
The
.Fn modnext
system call
returns the modid of the next module (see
.Sx DESCRIPTION )
or 0.
If an error
occurs,
.Va errno
is set to indicate the error.
.Sh ERRORS
The only error set by
.Fn modnext
is
.Er ENOENT ,
which is set when
.Va modid
refers to a kernel module that does not exist (is not loaded).
.Sh SEE ALSO
.Xr kldfind 2 ,
.Xr kldfirstmod 2 ,
.Xr kldload 2 ,
.Xr kldnext 2 ,
.Xr kldstat 2 ,
.Xr kldsym 2 ,
.Xr kldunload 2 ,
.Xr modfind 2 ,
.Xr modstat 2 ,
.Xr kld 4 ,
.Xr kldstat 8
.Sh HISTORY
The
.Nm kld
interface first appeared in
.Fx 3.0 .
