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kextd(8) [opendarwin man page]

KEXTD(8)						    BSD System Manager's Manual 						  KEXTD(8)

NAME
kextd -- loads kexts on demand from kernel or client processes SYNOPSIS
kextd [-c] [-d] [-f] [-h] [-j] [-r directory] ... [-v [1-6]] [-x] DESCRIPTION
kextd runs as a daemon process to handle requests from the kernel to load kernel extensions (kexts). For proper operation kextd must be invoked as the superuser. kextd should not be considered a formal interface in the Darwin OS or in Mac OS X. Neither its usage nor its presence should be relied on by any software or software installer. The options available are these: -c Ignore any repository cache files and scan all kext bundles to gather information. If this option is not given, kextd will attempt to use cache files and to create them if they are out of date or don't exist. -d Debug mode; run in the foreground without forking as a daemon process. -f Don't fork a child task when loading kexts. This option is present for debugging kextd and should never be used otherwise. -h Print a help message describing each option flag. -j Don't jettison kernel linker; load NDRVs in the kernel and exit, allowing the kernel to continue handling all load requests. This option is used in startup scripts for install CDs, along with a properly built mkext cache, in order to speed startup from the CD. -r directory Use directory as a repository of known kexts for handling load requests. This is not recursive; only the directory's immediate con- tents are scanned. By default kextd uses only the kexts in /System/Library/Extensions. -v [1-6] Verbose mode; print information about the kext scanning and loading process (note that this is generally not useful when unloading). See the man page for kextload(8) to see what each verbose level prints. -x Run kextd in safe boot mode (indicating startup with the Shift key held down). Kexts that don't specify a proper value for the OSBundleRequired info dictionary property will not be loaded. This option implies the use of the -c option. DIAGNOSTICS
kextd normally never exits. If an error occurs it exits with a nonzero status. If invoked with the -j option it exits with a zero status when no error occurs, or a nonzero status if an error does occur. kextd logs all error and verbose messages to the system log, or to the console if the system log facility isn't available. When running in debug mode all output is printed to the standard output and error streams. SEE ALSO
kextcache(8), kextload(8), kextstat(8), kextunload(8), syslogd(8) Darwin February 14, 2002 Darwin

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KEXTUNLOAD(8)						    BSD System Manager's Manual 					     KEXTUNLOAD(8)

NAME
kextunload -- terminates objects and unloads code associated with a kernel extension SYNOPSIS
kextunload [-b bundle_id] ... [-c class_name] ... [-h] [-p] [ -v [0-6] | -q ] [ extension ] ... DESCRIPTION
The kextunload program is used to terminate and unregister I/O Kit objects associated with a kernel extension (kext) and to unload the code and personalities for that kext. In order to unload a kext kextunload must be invoked as the superuser. If another loaded kext has a dependency on a kext being unloaded, the unload will fail. You can determine whether a kext has dependents using the kextstat(8) tool. kextunload is a formal interface for unloading kexts in the Darwin OS and in Mac OS X. Software and installers can rely on its presence and invoke it in order to unload kexts. The arguments and options available are these: extension The pathname of a kext to unload. All instances of classes associated with the kext are terminated, and personalities and code are unloaded from the kernel. -b bundle_id Unload code and personalities for the kext whose CFBundleIdentifier is bundle_id. -c class_name Terminate all instances of class class_name if possible but do not unload code or personalities. New load requests for devices driven by these instances may result in the same class being instantiated at any time. -h Print a help message describing each option flag. -m bundle_id Same as -m (remains for backward compatibility). -p Don't remove personalities when unloading (unnecessary when using the -c option). New load requests for devices driven by the kext may result in the same kext being loaded at any time. -q Quiet mode; print no informational or error messages. This option excludes -v. -v [0-6] Verbose mode; print information about the kext scanning and loading process (note that this is generally not useful when unloading). See the man page for kextload(8) to see what each verbose level prints. This option excludes - q . DIAGNOSTICS
kextunload exits with a zero status upon success, or prints an error message and exits with a nonzero status upon failure. An error when multiple kexts are being unloaded causes kextunload to exit immediately, so that some kexts may remain unloaded even if they could have been unloaded without error. BUGS
The results of unload requests as given by the kernel don't allow for determining the reason for a failure, such as that the kext wasn't loaded or that another kext has a dependency on it. You can check these conditions using kextstat(8). SEE ALSO
kextcache(8), kextd(8), kextload(8), kextstat(8) Darwin April 17, 2002 Darwin
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