Commit Graph

24 Commits

Author SHA1 Message Date
John Dyson
5856e12e69 Fully implement vfork. Vfork is now much much faster than even our
fork. (On my machine, fork is about 240usecs, vfork is 78usecs.)

Implement rfork(!RFPROC !RFMEM), which allows a thread to divorce its memory
	from the other threads of a group.

Implement rfork(!RFPROC RFCFDG), which closes all file descriptors, eliminating
	possible existing shares with other threads/processes.

Implement rfork(!RFPROC RFFDG), which divorces the file descriptors for a
	thread from the rest of the group.

Fix the case where a thread does an exec.  It is almost nonsense for a thread
	to modify the other threads address space by an exec, so we
	now automatically divorce the address space before modifying it.
1997-04-13 01:48:35 +00:00
Bruce Evans
3f39dbc52d Removed potentially harmful garbage <vm/lock.h> and fixed bogus
use of it.  It was actually harmless because the use was null due
to fortuitous include orders and identical (wrong) idempotency
macros.
1997-04-01 08:39:07 +00:00
Bruce Evans
3ac4d1ef0c Don't #include <sys/fcntl.h> in <sys/file.h> if KERNEL is defined.
Fixed everything that depended on getting fcntl.h stuff from the wrong
place.  Most things don't depend on file.h stuff at all.
1997-03-23 03:37:54 +00:00
Peter Wemm
6875d25465 Back out part 1 of the MCFH that changed $Id$ to $FreeBSD$. We are not
ready for it yet.
1997-02-22 09:48:43 +00:00
Mike Pritchard
59942ba155 Make this compile again after the Lite2 merge.
VOP_UNLOCK was being called with the wrong mumber of arguments.
1997-02-10 16:32:52 +00:00
John Dyson
996c772f58 This is the kernel Lite/2 commit. There are some requisite userland
changes, so don't expect to be able to run the kernel as-is (very well)
without the appropriate Lite/2 userland changes.

The system boots and can mount UFS filesystems.

Untested: ext2fs, msdosfs, NFS
Known problems: Incorrect Berkeley ID strings in some files.
		Mount_std mounts will not work until the getfsent
		library routine is changed.

Reviewed by:	various people
Submitted by:	Jeffery Hsu <hsu@freebsd.org>
1997-02-10 02:22:35 +00:00
Jordan K. Hubbard
1130b656e5 Make the long-awaited change from $Id$ to $FreeBSD$
This will make a number of things easier in the future, as well as (finally!)
avoiding the Id-smashing problem which has plagued developers for so long.

Boy, I'm glad we're not using sup anymore.  This update would have been
insane otherwise.
1997-01-14 07:20:47 +00:00
Bruce Evans
f58609f0c6 Fixed some more easy cases of const poisoning in the kernel. Cosmetic. 1996-09-03 22:19:16 +00:00
Gary Palmer
c23670e294 Clean up -Wunused warnings.
Reviewed by:		bde
1996-06-12 05:11:41 +00:00
Bruce Evans
a794e791c8 Removed unnecessary #includes from <sys/imgact.h> so that it is
self-sufficient and added explicit #includes where required.
1996-05-01 02:43:13 +00:00
Peter Wemm
71d7d1b17a Remove references to MAP_FILE.. That is now "default" and is only
a "#define MAP_FILE 0" that is still there for net-2 source compatability.
1996-03-12 06:20:19 +00:00
Peter Wemm
31432c9ff1 The same data segment length rounding problem that was in the elf
loader is also present in the coff loader.  It was possible to get one
more page allocated than needed, which would cause brk()/malloc()/etc
to fail with ENOMEM when it tried to re-allocate the space.

Also, change a bcopy() from kernel to user space to a copyout().
1996-03-12 06:13:08 +00:00
John Dyson
5327442589 Fixed vm_map_find for new vm changes. 1996-01-19 23:00:38 +00:00
David Greenman
efeaf95a41 Untangled the vm.h include file spaghetti. 1995-12-07 12:48:31 +00:00
David Greenman
c52007c2cc All:
Changed vnodep -> vp for consistency with the rest of the kernel, and
changed iparams -> imgp for brevity.

kern_exec.c:
   Explicitly initialized some additional parts of the image_params struct
to avoid bzeroing it. Rewrote the set-id code to reduce the number of
logical tests. The rewrite exposed a mostly benign bug in the algorithm:
traced set-id images would get ktracing disabled even if the set-id didn't
happen for other reasons.
1995-11-06 12:52:37 +00:00
Steven Wallace
1448ea7e81 Change alternate space base name from /emul/ibcs2 to /compat/ibcs2,
in line with linux alt space of /compat/linux.
This was pointed out by Stefan Esser.

In cheching alt space for libraries in imgact_coff.c, use const
ibcs2_emul_path instead of its own local string.  Also do a proper
malloc of temp name according to MAXPATHLEN.
1995-10-10 17:33:19 +00:00
Steven Wallace
9e03db613c Remove old files no longer needed.
Add new files created for emulator.
Modify NetBSD import to work with FreeBSD and add new features and
code.  The complete emulator is essentially a combination of work/code
implemented by Sean Eric Fagan, Soren Schmidt, Scott Bartram, and myself,
Steven Wallace.

Features of this new emulator system include:

 o  "clean" code, including strict prototyping.
 o  Auto-generation of ibcs2 system calls, xenix system calls, isc system
calls.  Generation includes system tables, structure definitions,
and prototyping of function calls.
 o  ibcs2 emulator does not rely on any COMPAT_43 system calls.
 o  embedded socksys support
 o  ibcs2 msgsys, semsys, shmsys calls supported if supported in kernel
 o  alternate /emul/ibcs2 namespace searched first for files in ibcs2
system.  Usefull to keep sysv libraries, binaries in /emul/ibcs2.
 o  many other finer details and functions fixed or implemented.
1995-10-10 07:59:30 +00:00
Sean Eric Fagan
e6df7bbb57 Unlock the vnode after checking permissions; this is necessary to prevent
a panic whenever an iBCS2 file is exec'd.

Obtained from: FreeBSD
1995-09-13 02:12:51 +00:00
Julian Elischer
2b14f991e6 Reviewed by: julian with quick glances by bruce and others
Submitted by:	terry (terry lambert)
This is  a composite of 3 patch sets submitted by terry.
they are:
New low-level init code that supports loadbal modules better
some cleanups in the namei code to help terry in 16-bit character support
some changes to the mount-root code to make it a little more
modular..

NOTE: mounting root off cdrom or NFS MIGHT be broken as I haven't been able
to test those cases..

certainly mounting root of disk still works just fine..
mfs should work but is untested. (tomorrows task)

The low level init stuff includes a total rewrite of init_main.c
to make it possible for new modules to have an init phase by simply
adding an entry to a TEXT_SET (or is it DATA_SET) list. thus a new module can
be added to the kernel without editing any other files other than the
'files' file.
1995-08-28 09:19:25 +00:00
David Greenman
c0e5de7d88 Moved setting of VTEXT flag into the appropriate image activators. This
fixes a bug where linux binaries would get the flag set inappropriately.
1995-08-24 10:32:37 +00:00
Rodney W. Grimes
9b2e535452 Remove trailing whitespace. 1995-05-30 08:16:23 +00:00
Joerg Wunsch
fa74aea62d Some long-waiting fixes for the COFF module. They silence compiler
warnings and are cosmetic only.  Poul once requested them, but neither
Sean nor Søren commented on them, so i commit it now before it's
getting lost some day.
1995-04-08 15:52:30 +00:00
David Greenman
91ee94544a Use of vm_allocate and vm_deallocate has been deprecated. 1995-02-20 23:52:39 +00:00
Søren Schmidt
69b770e238 iBCS2 emulator core files.
This is the main files for the iBCS2 emulator. It can be use
compiled into the kernel by using:

options		IBCS2
options 	COMPAT_IBCS2

or as a lkm module using:

options		COMPAT_IBCS2

and then loading it via the ibcs2 script in /usr/bin

REMEMBER: this code is still experimental ! NO WARRENTY !

Submitted by:	sef@kithrup.com, mostyn@mrl.com, sos@kmd-ac.dk
1994-10-14 08:53:16 +00:00