freebsd-dev/lib/libc/sys/modfind.2

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.\"
.\" Copyright (c) 1999 Chris Costello
.\" All rights reserved.
.\"
.\" Redistribution and use in source and binary forms, with or without
.\" modification, are permitted provided that the following conditions
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.\" 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
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.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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.\" $FreeBSD$
.\"
.Dd September 28, 2000
.Dt MODFIND 2
.Os FreeBSD
.Sh NAME
.Nm modfind
.Nd returns the modid of a kernel module
.Sh LIBRARY
.Lb libc
.Sh SYNOPSIS
.Fd #include <sys/param.h>
.Fd #include <sys/module.h>
.Ft int
.Fn modfind "const char *modname"
.Sh DESCRIPTION
The function
.Fn modfind
returns the modid of the kernel module referenced by
.Fa modname .
.Sh RETURN VALUES
.Fn modfind
returns the modid of the kernel module referenced by
.Fa file .
Upon error,
.Fn modfind
returns -1 and sets
.Va errno
to indicate the error.
.Sh ERRORS
.Va errno
is set to the following if
.Fn modfind
fails:
.Bl -tag -width Er
.It Bq Er EFAULT
The data required for this operation could not be read from the kernel space.
.It Bq Er ENOENT
The file specified is not loaded in the kernel.
.Sh SEE ALSO
.Xr kldfirstmod 2 ,
.Xr kldload 2 ,
.Xr kldnext 2 ,
.Xr kldstat 2 ,
.Xr kldunload 2 ,
.Xr modnext 2 ,
.Xr modfnext 2 ,
.Xr modstat 2 ,
.Xr kld 4
.Sh HISTORY
The
.Nm kld
interface first appeared in
.Fx 3.0 .