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download PDF document: kldconfig.8.pdf

KLDCONFIG(8) FreeBSD System Manager's Manual KLDCONFIG(8)
NAME kldconfig - display or modify the kernel module search path
SYNOPSIS kldconfig [-dfimnUv] [-S sysctlname] [path ...] kldconfig -r
DESCRIPTION The kldconfig utility displays or modifies the search path used by the kernel when loading modules using the kldload(8) utility or the kldload(2) syscall.
The following options are available:
-d Remove the specified paths from the module search path.
-f Do not fail if a path specified for adding is already present in the search path, or if a path specified for removing is not present in the search path. This may be useful in startup/shutdown scripts for adding a path to a file system which is still not mounted, or in shutdown scripts for unconditionally removing a path that may have been added during startup.
-i Add the specified paths to the beginning of the search path, not to the end. This option can only be used when adding paths.
-m Instead of replacing the module search path with the set of paths specified, "merge" in the new entries.
-n Do not actually change the module search path.
-r Display the current search path. This option cannot be used if any paths are also specified.
-S sysctlname Specify the sysctl name to use instead of the default kern.module_path.
-U "Unique-ify" the current search path - if any of the directories is repeated one or more times, only the first occurrence remains. This option implies -m.
-v Verbose output: display the new module search path. If the path has been changed, and the -v flag is specified more than once, the old path is displayed as well.
FILES /boot/kernel, /boot/modules, /modules The default module search path used by the kernel.
EXIT STATUS The kldconfig utility exits 0 on success, and >0 if an error occurs.
EXAMPLES Show the module search path
$ kldconfig -r $ echo $? 1
Same as above but forcing the operation. This time the command will succeed:
$ kldconfig -d -f /boot $ echo $? 0
Add the /boot directory to the beginning of the search path and display extra verbose output:
$ kldconfig -i -m -vv /boot /boot/kernel;/boot/modules -> /boot;/boot/kernel;/boot/modules
Without -m the -i flag will overwrite the contents of the search path list:
$ kldconfig -i -vv /boot /boot;/boot/kernel;/boot/modules;/boot/dtb;/boot/dtb/overlays -> /boot
Same as above but using -n to simulate the operation without actually doing it:
$ kldconfig -i -n -vv /boot /boot;/boot/kernel;/boot/modules;/boot/dtb;/boot/dtb/overlays -> /boot
Add directories to the search path removing duplicates. Note the need of -f to force the operation in case any of the directories is already in the search path. The /boot/kernel directory will be added once:
$ kldconfig -f -U /boot/kernel /boot/kernel /boot/modules /boot/dtb /boot/dtb/overlays
SEE ALSO kldload(2), kldload(8), kldxref(8), sysctl(8)
HISTORY The kldconfig utility first appeared in FreeBSD 4.4.
AUTHORS Peter Pentchev <roam@FreeBSD.org>
FreeBSD 14.0-RELEASE-p11 September 29, 2020 FreeBSD 14.0-RELEASE-p11