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NAME

     kldunload kldunloadf - unload kld files

LIBRARY

     Standard C Library (libc, -lc)

SYNOPSIS

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

     int
     kldunload(int fileid);

     int
     kldunload(int fileid, int flags);

DESCRIPTION

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

     The kldunloadf() system call accepts an additional flags argument, which
     may be one of LINKER_UNLOAD_NORMAL, giving the same behavior as
     kldunload(), or LINKER_UNLOAD_FORCE, which causes the unload to ignore a
     failure to quiesce the module.

RETURN VALUES

     Upon successful completion, the value 0 is returned; otherwise the
     value -1 is returned and the global variable errno is set to indicate the
     error.

ERRORS

     The file referred to by fileid is unloaded unless:

     [EPERM]            You do not have access to unlink the file from the
                        kernel.

     [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.