KLDUNLOAD(2)

NAME
kldunload - unload kld files

LIBRARY
libc

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.