Manual Pages  — KLDSTAT

kldstat – display status of dynamic kernel linker

SYNOPSIS DESCRIPTION EXIT STATUS EXAMPLES SEE ALSO HISTORY AUTHORS

kldstat [-h] [-q] [-v] [-d] [-i id] [-n filename]
kldstat [-q] [-d] [-m modname]

The kldstat utility displays the status of any files dynamically linked into the kernel.

The following options are available:

-d	Show the module specific data (as int, unsigned int and unsigned long)
-h	Display the size field in a human-readable form, using unit suffixes instead of hex values.
-i id
	Display the status of only the file with this ID.
-m modname
	Display the status of only the module with this modname.
-n filename
	Display the status of only the file with this filename.
-q	Quietly check if file is loaded or compiled into the kernel.
-v	Be more verbose.

The utility exits 0 on success, and >0 if an error occurs.

Show files dynamically linked into the kernel. Note the kernel itself is shown in the list. Refs shows the number of modules referenced by each file:

$ kldstat
Id Refs Address                Size Name
 1   38 0xffffffff80200000  2448f20 kernel
 2    3 0xffffffff82649000    b7bd8 linux.ko
 3    5 0xffffffff82701000     9698 linux_common.ko
 4    1 0xffffffff82b11000     1eae linsysfs.ko
 5    1 0xffffffff82b13000    f2af8 nvidia-modeset.ko
 6    1 0xffffffff82c06000  122b020 nvidia.ko
 7    1 0xffffffff83e32000     2668 intpm.ko
 8    1 0xffffffff83e35000      b50 smbus.ko
 9    1 0xffffffff83e36000     18a0 uhid.ko
10    1 0xffffffff83e38000     2928 ums.ko
11    1 0xffffffff83e3b000     1aa0 wmt.ko
12    1 0xffffffff83e3d000     cd70 snd_uaudio.ko

Show the verbose status of the linux file and show the size in a human readable fashion:

$ kldstat -h -v -n linux
Id Refs Address             Size Name
 2    3 0xffffffff82649000  735K linux.ko (/boot/kernel/linux.ko)
        Contains modules:
                 Id Name
                  2 linuxelf

Same as above using the id of the file:

$ kldstat -h -i 2 -v
Id Refs Address             Size Name
 2    3 0xffffffff82649000  735K linux.ko (/boot/kernel/linux.ko)
        Contains modules:
                 Id Name
                  2 linuxelf

Show the status of the linuxelf module obtained from the example above:

$ kldstat -v -m linuxelf
Id  Refs Name
  2    1 linuxelf

Show the module specific data for the g_raid module:

$ kldstat -d -m g_raid
Id  Refs Name data..(int, uint, ulong)
366    1 g_raid (0, 0, 0x0)

Check if the module fakefile is linked. Returns 0 if it is, 1 otherwise:

$ kldstat -q -n fakefile || echo file not linked
file not linked

The kldstat utility first appeared in FreeBSD 3.0, replacing the lkm interface.

Doug Rabson <Mt dfr@FreeBSD.org>