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KLDUNLOAD(2)             DragonFly System Calls Manual            KLDUNLOAD(2)

NAME
     kldunload - unload kld files

LIBRARY
     Standard C Library (libc, -lc)

SYNOPSIS
     #include <sys/param.h>
     #include <sys/linker.h>

     int
     kldunload(int fileid);

DESCRIPTION
     The function kldunload() unloads a kld file from the kernel that was
     previously linked via kldload(2).

RETURN VALUES
     The function kldunload() returns the fileid of the kld file which was
     previously loaded into memory via kldload().  If an error occurs,
     kldunload() will return -1 and set errno to indicate the error.

ERRORS
     The file referred to by fileid is unloaded unless:

     [EPERM]            You don't have access to unlink the file from the
                        kernel.

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

     [ENOENT]           The file was not found.

     [EBUSY]            You attempted to unload a file linked by the kernel.

SEE ALSO
     kldfind(2), kldfirstmod(2), kldload(2), kldnext(2), kldstat(2),
     kldsym(2), modfind(2), modfnext(2), modnext(2), modstat(2), kld(4),
     kldunload(8)

HISTORY
     The kld interface first appeared in FreeBSD 3.0.

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