Commit Graph

34 Commits

Author SHA1 Message Date
Peter Wemm
9c8b8baa38 Slight reorganization of kernel thread/process creation. Instead of using
SYSINIT_KT() etc (which is a static, compile-time procedure), use a
NetBSD-style kthread_create() interface.  kproc_start is still available
as a SYSINIT() hook.  This allowed simplification of chunks of the
sysinit code in the process.  This kthread_create() is our old kproc_start
internals, with the SYSINIT_KT fork hooks grafted in and tweaked to work
the same as the NetBSD one.

One thing I'd like to do shortly is get rid of nfsiod as a user initiated
process.  It makes sense for the nfs client code to create them on the
fly as needed up to a user settable limit.  This means that nfsiod
doesn't need to be in /sbin and is always "available".  This is a fair bit
easier to do outside of the SYSINIT_KT() framework.
1999-07-01 13:21:46 +00:00
Peter Wemm
df8abd0bb9 Slight tweak to fork1() calling conventions. Add a third argument so
the caller can easily find the child proc struct.  fork(), rfork() etc
syscalls set p->p_retval[] themselves.  Simplify the SYSINIT_KT() code
and other kernel thread creators to not need to use pfind() to find the
child based on the pid.  While here, partly tidy up some of the fork1()
code for RF_SIGSHARE etc.
1999-06-30 15:33:41 +00:00
Peter Wemm
b5b15c3ff0 First stages of a module dependency cleanup. This part fixes a
particularly annoying hack, namely having the linker bash the moduledata
to set the container pointer, preventing it being const.  In the process,
a stack of warnings were fixed and will probably allow a revisit of the
const C_SYSINIT() changes.  This explicitly registers modules in files or
preload areas with the module system first, and let them initialize via
SYSINIT/DECLARE_MODULE later in their SI_ORDER_xxx order.  The kludge of
finding the containing file is no longer needed since the registration
of modules onto the modules list is done in the context of initializing
the linker file.
1999-05-08 13:01:59 +00:00
Luoqi Chen
5206bca10a Enable vmspace sharing on SMP. Major changes are,
- %fs register is added to trapframe and saved/restored upon kernel entry/exit.
- Per-cpu pages are no longer mapped at the same virtual address.
- Each cpu now has a separate gdt selector table. A new segment selector
  is added to point to per-cpu pages, per-cpu global variables are now
  accessed through this new selector (%fs). The selectors in gdt table are
  rearranged for cache line optimization.
- fask_vfork is now on as default for both UP and SMP.
- Some aio code cleanup.

Reviewed by:	Alan Cox	<alc@cs.rice.edu>
		John Dyson	<dyson@iquest.net>
		Julian Elischer	<julian@whistel.com>
		Bruce Evans	<bde@zeta.org.au>
		David Greenman	<dg@root.com>
1999-04-28 01:04:33 +00:00
Poul-Henning Kamp
f711d546d2 Suser() simplification:
1:
  s/suser/suser_xxx/

2:
  Add new function: suser(struct proc *), prototyped in <sys/proc.h>.

3:
  s/suser_xxx(\([a-zA-Z0-9_]*\)->p_ucred, \&\1->p_acflag)/suser(\1)/

The remaining suser_xxx() calls will be scrutinized and dealt with
later.

There may be some unneeded #include <sys/cred.h>, but they are left
as an exercise for Bruce.

More changes to the suser() API will come along with the "jail" code.
1999-04-27 11:18:52 +00:00
Peter Wemm
88b4f4ee55 LK_RETRY is a vn_lock() flag, not one for lockmgr(). 1999-04-06 03:02:11 +00:00
Doug Rabson
a199ed3cc3 * Register sysctl nodes before running sysinits when loading files and
unregister them after sysuninits when unloading.
* Add code to vfs_register() to set the oid number of vfs sysctls to
  the type number of the filesystem.

Reviewed by: bde
1999-03-07 16:06:41 +00:00
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