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KLDUNLOAD(2)		       System Calls Manual		    KLDUNLOAD(2)

NAME
     kldunload, kldunloadf -- unload kld files

LIBRARY
     Standard C Library (libc, -lc)

SYNOPSIS
     #include <sys/linker.h>

     int
     kldunload(int fileid);

     int
     kldunloadf(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 kldun-
     load(), 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  ker-
			nel.

     [ENOENT]		The file was not found.

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

     [EINVAL]		The kldunloadf() system call was passed invalid flags.

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.

FreeBSD ports 15.quarterly	December 25, 2008		    KLDUNLOAD(2)

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