DragonFly On-Line Manual Pages

KLDLOAD(2)               DragonFly 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 function kldload() loads a kld file into the kernel using the kernel
     linker.  The file argument may be specified as a bare filename, e.g.,
     file.ko, and it will be searched within the module path as defined by the
     sysctl kern.module_path.  To load a kld file from a specific location
     including the current directory, specify a full or relative in file.

RETURN VALUES
     The function kldload() 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 functions.

     [EPERM]            The kernel security level prevented a kld file from
                        being loaded.  Refer to security(7) for details.

     [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.

DragonFly 6.5-DEVELOPMENT        May 11, 2026        DragonFly 6.5-DEVELOPMENT