KLDUNLOAD(2) BSD System Calls Manual KLDUNLOAD(2)NAME
kldunload, kldunloadf — unload kld files
Standard C Library (libc, -lc)
kldunloadf(int fileid, int flags);
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.
Upon successful completion, the value 0 is returned; otherwise the
value -1 is returned and the global variable errno is set to indicate the
The file referred to by fileid is unloaded unless:
[EPERM] You do not have access to unlink the file from the
[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 ALSOkldfind(2), kldfirstmod(2), kldload(2), kldnext(2), kldstat(2),
kldsym(2), modfind(2), modfnext(2), modnext(2), modstat(2), kld(4),
The kld interface first appeared in FreeBSD 3.0.
BSD December 25, 2008 BSD