Commit Graph

27 Commits

Author SHA1 Message Date
Doug Rabson
75e08a5e7e A correction to the code which attempts to prevent the same module
being loaded twice.  It used rindex() to strip the pathname but failed
to account for the fact that rindex() will return a pointer to the '/',
not the first character of the filename.

Submitted by: Nick Hibma <hibma@skylink.it>
1999-02-20 21:22:00 +00:00
Doug Rabson
ce02431ffa * Change sysctl from using linker_set to construct its tree using SLISTs.
This makes it possible to change the sysctl tree at runtime.

* Change KLD to find and register any sysctl nodes contained in the loaded
  file and to unregister them when the file is unloaded.

Reviewed by: Archie Cobbs <archie@whistle.com>,
	Peter Wemm <peter@netplex.com.au> (well they looked at it anyway)
1999-02-16 10:49:55 +00:00
Matthew Dillon
fe08c21a53 Fix warnings in preparation for adding -Wall -Wcast-qual to the
kernel compile.

    This commit includes significant work to proper handle const arguments
    for the DDB symbol routines.
1999-01-27 23:45:44 +00:00
Matthew Dillon
d254af07a1 Fix warnings in preparation for adding -Wall -Wcast-qual to the
kernel compile
1999-01-27 21:50:00 +00:00
Doug Rabson
149a155c3b Don't try to call SYSUNINIT functions if there was a link error.
Reviewed by: Peter Wemm <peter@netplex.com.au>
1999-01-25 08:42:24 +00:00
Peter Wemm
461b36ab54 Update userref handling after discussion with submitter of previous
patch.  lf can't be dereferenced after the unload attempt, in case it
was freed.  Instead, decrement first and back it out if the unload failed.
This should be relatively immune to races caused by the user since the
userref count will be zero for the duration of the actual unloading and
will stop further kldunload attempts.

Submitted by:   Ustimenko Semen <semen@iclub.nsu.ru>
1999-01-23 03:45:22 +00:00
Peter Wemm
d7dfdda203 Relax linkage symbol scope restrictions to be more compatable with that
of shared libraries.
1999-01-19 22:26:46 +00:00
Peter Wemm
e75a9dc0b6 Don't decrement userrefs unless the file was actually was unloaded.
Submitted by:	Ustimenko Semen <semen@iclub.nsu.ru>
1999-01-19 16:26:32 +00:00
Peter Wemm
e99f57c354 Try and clean up the multiple formal loading support a bit, based on
suggestions from Greg Lehey some time ago.  In the face of multiple
potential file formats, try and give a more sensible error than just
ENOEXEC.

XXX a good case can be made that the loading process is wrong - the linker
should locate the file first (using the search paths etc), then run the
loaders to see if they recognize it.  While the present system allows for
the possibility of different search paths for different formats, we do not
use it and it just makes things more complicated than they need to be.
1999-01-17 17:58:52 +00:00
Mike Smith
f1b265228c Don't allow more than one module with the same name to be loaded.
Make kldfind ignore the path when searching for a loaded module.

Submitted by:	John Birrell (jb@freebsd.org)
1999-01-05 20:24:28 +00:00
Peter Wemm
ba031106b1 kldsym(2) prototype implementation 1998-11-11 13:04:40 +00:00
Peter Wemm
edfbe15080 Arrange for unload-time linker set hooks to be called. While cut/pasting
some code, I changed the original to be consistant with the rest of the
file rather than duplicating the problems.
1998-11-10 08:49:28 +00:00
Peter Wemm
21ce23eb91 Define the kld_debug variable if KLD_DEBUG is enabled 1998-11-06 15:10:17 +00:00
Peter Wemm
84e40f5627 The handle for the kernel is common. With this fix, ELF kernels can load
a.out kld modules, and a.out kernels can load ELF kld modules.
1998-11-04 15:20:58 +00:00
Peter Wemm
7837745438 Have the in-kernel linker try a default extension of .ko. This means that
"kldload nfs" works.  We use the same default extension in the /boot/loader
system.
1998-11-03 14:27:05 +00:00
Peter Wemm
b913711e0c Use the kvm space pathname that we copied in, not the one in user space. 1998-11-03 13:09:31 +00:00
Mike Smith
6fe8861e01 Don't put 0x in front of %p, it does it already.
Submitted by:	 Brian Feldman <green@janus.syracuse.net>
1998-10-24 18:35:09 +00:00
Peter Wemm
bd4e381b03 - bzero() after malloc(). This is especially obvious when kern_malloc is
compiled with DIAGNOSTIC.
- Don't break from the preload module processing loop prematurely.
1998-10-15 17:12:12 +00:00
Peter Wemm
26deceba9c Display module type as well as module name when we find one preloaded. 1998-10-10 02:29:07 +00:00
Peter Wemm
51f3fe7ab2 Use Mike Smith's linker module search path code.
Implement preloading in a fairly MI way, assuming the information is
prepared.
DDB interface helpers..  Provide some support for db_kld.c so that we
don't have to export too much detail.
Debugging and cosmetic nits left in from development..
The other half of the containing file hack so modules can associate
themselves with their "file".
1998-10-10 00:07:53 +00:00
Doug Rabson
a2c99e3e72 Modify the internal interfaces to the kernel linker to make it possible
for DDB to use its symbol tables.
1998-08-12 08:44:21 +00:00
Bruce Evans
b1679c0f7e Use a real malloc type for M_LINKER instead of #defining it as M_TEMP.
Fixed a comment.
1998-01-01 08:56:24 +00:00
John Dyson
74b2192ae6 We have had support for running the kernel daemons as threads for
quite a while, but forgot to do so.  For now, this code supports
most daemons  running as kernel threads in UP kernels, and as
full processes in SMP.  We will soon be able to run them as
threads in SMP, but not yet.
1997-12-12 04:00:59 +00:00
Bruce Evans
d73424aa6b Fixed a sloppy common-style definitions. 1997-11-20 20:07:59 +00:00
Poul-Henning Kamp
cb226aaa62 Move the "retval" (3rd) parameter from all syscall functions and put
it in struct proc instead.

This fixes a boatload of compiler warning, and removes a lot of cruft
from the sources.

I have not removed the /*ARGSUSED*/, they will require some looking at.

libkvm, ps and other userland struct proc frobbing programs will need
recompiled.
1997-11-06 19:29:57 +00:00
Bruce Evans
1fd0b0588f Removed unused #includes. 1997-08-02 14:33:27 +00:00
Doug Rabson
cea6c86c11 This is the kernel linker. To use it, you will first need to apply
the patches in freefall:/home/dfr/ld.diffs to your ld sources and set
BINFORMAT to aoutkld when linking the kernel.

Library changes and userland utilities will appear in a later commit.
1997-05-07 16:05:47 +00:00