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kld(3) [freebsd man page]

KLD(3)							   BSD Library Functions Manual 						    KLD(3)

NAME
kld_isloaded, kld_load -- kld utility functions LIBRARY
System Utilities Library (libutil, -lutil) SYNOPSIS
#include <libutil.h> int kld_isloaded(const char *name); int kld_load(const char *name); DESCRIPTION
These functions facilitate loading kernel modules from userland applications. The kld_isloaded() function takes a name and returns a non-zero value if a module of that name is currently loaded. The name can be either the name of a module file (cpufreq.ko), the same name without the .ko extension (cpufreq), or the name of a module contained within that file (cpu/ichss). Only the latter will return correct results if the module is compiled into the kernel. The kld_load() function is a simple wrapper around the kldload(2) function. It returns zero if and only if the corresponding kldload() call succeeded or returned EEXIST (signifying that the requested module was already loaded). SEE ALSO
kldfirstmod(2), kldload(2), kldnext(2), kldstat(2), modfnext(2), modstat(2), kld(4) HISTORY
The kld_isloaded() and kld_load() functions first appeared in FreeBSD 6.3. AUTHORS
The kld_isloaded() and kld_load() functions and this manual page were written by Dag-Erling Smorgrav <des@FreeBSD.org>. BSD
February 18, 2006 BSD

Check Out this Related Man Page

KLDLOAD(2)                                                    BSD System Calls Manual                                                   KLDLOAD(2)

NAME
kldload -- load KLD files into the kernel LIBRARY
Standard C Library (libc, -lc) SYNOPSIS
#include <sys/param.h> #include <sys/linker.h> int kldload(const char *file); DESCRIPTION
The kldload() system call loads a kld file into the kernel using the kernel linker. RETURN VALUES
The kldload() system call returns the fileid of the kld file which was loaded into the kernel. If an error occurs, kldload() will return -1 and set errno to indicate the error. ERRORS
The named file is loaded unless: [EPERM] You do not have access to read the file or link it with the kernel. You should be the root user to be able to use the kld system calls. [EFAULT] Bad address encountered when adding kld info into the kernel space. [ENOMEM] There is no memory to load the file into the kernel. [ENOENT] The file was not found. [ENOEXEC] The file format of file was unrecognized. [EEXIST] The supplied file has already been loaded. SEE ALSO
kldfind(2), kldfirstmod(2), kldnext(2), kldstat(2), kldsym(2), kldunload(2), modfind(2), modfnext(2), modnext(2), modstat(2), kld(4), kldload(8) HISTORY
The kld interface first appeared in FreeBSD 3.0. BSD March 3, 1999 BSD

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