kloadsrv - Invokes the kernel load server daemon
/sbin/kloadsrv [-V] [-f] [-d debug_level] [-k] [-log logfile]
[-q] [-s kernel_symtab_file] [kernel_object_filename]
/sbin/kloadsrv [-w kernel_symtab_file] kernel_object_filename
Displays the version of the kloadsrv command. Causes the
kloadsrv daemon to remain in the foreground. By default,
the daemon automatically places itself into the background
after it initializes. Specifies the level of debugging
information. The debug_level is a small integer. A value
of zero (0) disables debugging. Nonzero values from 1 to
higher levels cause kloadsrv to display various log messages.
Kills the kloadsrv daemon, if it is running.
Specifies that the debugging information is to be sent to
the specified log file. The logfilevariable must be specified
as a full pathname. By default, the debugging information
is sent to the console device, /dev/console.
Queries and prints the process id of the kloadsrv daemon,
if it is running, or prints 0 otherwise. Specifies the
name of the kernel symbol table file. By default, the kernel
symbol table file name is /vmunix.sym. Specifies that
the kloadsrv command write a kernel symbol table file and
then exit. When you specify the -w option, you must also
specify a kernel_object_filename.
This command invokes the kloadsrv daemon, which loads kernel
modules into the kernel. Command options in the first
line of the synopsis are valid when you invoke kloadsrv
automatically during system startup. The kloadsrv daemon
typically starts during system startup as specified in the
/etc/inittab file. Options in the second line of the command
synopsis are valid when you invoke kloadsrv manually
from the command line.
In the first invocation form, the kernel_object_filename
variable is the pathname of the file from which the running
kernel was booted. In the second invocation form, the
kernel_object_filename variable is not optional. You must
specify a value, which is the path to any linked kernel
image for which you want to generate a kernel symbol table
If you omit an argument for kernel_object_filename from
the startup command line, the kloadsrv daemon uses the
Usually, you must specify an argument for kernel_object_filename
only if you moved the booted kernel
image after the kernel was booted. This is required
because the kloadsrv daemon uses the value returned by the
The sizer command returns the default kernel object file
For example, suppose you move the running kernel as follows:
/sbin/mv /vmunix /vmunix.bak /sbin/mv /genvmunix /vmunix
If you then need to restart the kloadsrv daemon, you must
invoke it as follows:
When moving the booted kernel, you should take great care.
During its initialization, the kloadsrv daemon builds a
list of kernel symbols used by device drivers. Moving or
overwriting the kernel object file while in single user
mode, can cause the addresses in this list of symbols to
be inaccurate. The addresses in the list reflect the
addresses in the new kernel, not the addresses in the
booted kernel. This will cause problems if you then transition
the system to multiuser mode.
If the kernel object file does not exist, the kloadsrv
daemon reads its symbol information from the file named
/vmunix.sym which is the default pathname for the kernel
symbol table. You can specify an alternate path to the
kernel symbol table file by using the -s option.
When the kloadsrv daemon initializes itself, it puts
itself into the background and enters its server loop,
where it waits to receive and respond to load requests,
unload requests, and query requests. If you specify the -f
option, the daemon remains in the foreground.
You can invoke the kloadsrv daemon using the -w option to
create a kernel symbol table file. You can then specify
this symbol table file as an argument to the -s option, or
copy the file to /vmunix.sym and use it as the default
kernel symbol table file.
When the kloadsrv daemon is invoked with the -w option it
runs in the foreground and never enters its server loop.
After writing the symbol table file, the daemon exits
without performing any server functions.
Commands: cfgmgr(8), sysconfig(8), sysconfigdb(8),
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