5824 Commits

Author SHA1 Message Date
Jens Schweikhardt
9d5abbddbf Correct typos, mostly s/ a / an / where appropriate. Some whitespace cleanup,
especially in troff files.
2003-01-01 18:49:04 +00:00
Warner Losh
62c8b32c71 Use 0600 for permissions for /dev/devctl until it is cloneable.
Use UID_ROOT and GID_WHEEL rather than 0.

Prompted by: rwatson
2003-01-01 03:43:58 +00:00
Alfred Perlstein
13438f6823 When compiling the kernel do not implicitly include filedesc.h from proc.h,
this was causing filedesc work to be very painful.
In order to make this work split out sigio definitions to thier own header
(sigio.h) which is included from proc.h for the time being.
2003-01-01 01:56:19 +00:00
Alfred Perlstein
c522c1bf4b fdcopy() only needs a filedesc pointer. 2003-01-01 01:19:31 +00:00
Alfred Perlstein
03282e6e3d purge 'register'. 2003-01-01 01:05:54 +00:00
Alfred Perlstein
c7f1c11b20 Since fdshare() and fdinit() only operate on filedescs, make them
take pointers to filedesc structures instead of threads.  This makes
it more clear that they do not do any voodoo with the thread/proc
or anything other than the filedesc passed in or returned.

Remove some XXX KSE's as this resolves the issue.
2003-01-01 01:01:14 +00:00
Alfred Perlstein
59c97598d3 fdinit() does not need to lock the filedesc it is creating as no one
besideds itself has access until the function returns.
2003-01-01 00:35:46 +00:00
Sam Leffler
addea9d4d7 o reduce the overhead of calling ppsratecheck by using ticks instead of
calling getmicrouptime (but maintain the struct timeval-based calling
  convention for compatibility)
o eliminate the use of timersub in ratecheck

Note that flood ping tests indicate ppsratecheck is inaccurate (but on the
conservative side) with this revised implementation.  If more accuracy is
needed we'll have to introduce an alternate interface or increase the
overhead.

Reviewed by:	silby, dillon, bde
2002-12-31 18:22:12 +00:00
Jens Schweikhardt
d64ada501a Fix typos, mostly s/ an / a / where appropriate and a few s/an/and/
Add FreeBSD Id tag where missing.
2002-12-30 21:18:15 +00:00
Sam Leffler
9967cafc49 Correct mbuf packet header propagation. Previously, packet headers
were sometimes propagated using M_COPY_PKTHDR which actually did
something between a "move" and a  "copy" operation.  This is replaced
by M_MOVE_PKTHDR (which copies the pkthdr contents and "removes" it
from the source mbuf) and m_dup_pkthdr which copies the packet
header contents including any m_tag chain.  This corrects numerous
problems whereby mbuf tags could be lost during packet manipulations.

These changes also introduce arguments to m_tag_copy and m_tag_copy_chain
to specify if the tag copy work should potentially block.  This
introduces an incompatibility with openbsd which we may want to revisit.

Note that move/dup of packet headers does not handle target mbufs
that have a cluster bound to them.  We may want to support this;
for now we watch for it with an assert.

Finally, M_COPYFLAGS was updated to include M_FIRSTFRAG|M_LASTFRAG.

Supported by:	Vernier Networks
Reviewed by:	Robert Watson <rwatson@FreeBSD.org>
2002-12-30 20:22:40 +00:00
Robert Watson
3c67c23bcf Implement new ACL system calls which do not follow symbolic links:
__acl_get_link(), __acl_set_link(), acl_delete_link(), and
__acl_aclcheck_link(), with almost identical implementations to
the existing __acl_*_file() variants on these calls.  Update
copyright.

Obtained from:	TrustedBSD Project
2002-12-29 20:28:44 +00:00
Robert Watson
6f123c35a0 Regen from syscalls.master:1.139 2002-12-29 20:26:41 +00:00
Robert Watson
b1f4acd8ac Add definitions for four new system calls:
__acl_get_link()	Retrieve an ACL by name without following
			symbolic links.
__acl_set_link()	Set an ACL by name without following
			symbolic links.
__acl_delete_link()	Delete an ACL by name without following
			symbolic links.
__acl_aclcheck_link()	Check an ACL against a file by name without
			following symbolic links.

These calls are similar in spirit to lstat(), lchown(), lchmod(), etc,
and will be used under similar circumstances.

Obtained from:	TrustedBSD Project
2002-12-29 20:25:54 +00:00
Ian Dowse
6a1b2a22ef Add a new vnode flag VI_DOINGINACT to indicate that a VOP_INACTIVE
call is in progress on the vnode. When vput() or vrele() sees a
1->0 reference count transition, it now return without any further
action if this flag is set. This flag is necessary to avoid recursion
into VOP_INACTIVE if the filesystem inactive routine causes the
reference count to increase and then drop back to zero. It is also
used to guarantee that an unlocked vnode will not be recycled while
blocked in VOP_INACTIVE().

There are at least two cases where the recursion can occur: one is
that the softupdates code called by ufs_inactive() via ffs_truncate()
can call vput() on the vnode. This has been reported by many people
as "lockmgr: draining against myself" panics. The other case is
that nfs_inactive() can call vget() and then vrele() on the vnode
to clean up a sillyrename file.

Reviewed by:	mckusick (an older version of the patch)
2002-12-29 18:30:49 +00:00
Poul-Henning Kamp
371400cf2e Use a timeout of one second while we wait for the vnode washer,
this prevents a potential race and makes the system a little bit
less jerky under extreme loads.
2002-12-29 11:18:25 +00:00
Poul-Henning Kamp
851a87ea1a Vnodes pull in 800-900 bytes these days, all things counted, so we need
to treat desiredvnodes much more like a limit than as a vague concept.

On a 2GB RAM machine where desired vnodes is 130k, we run out of
kmem_map space when we hit about 190k vnodes.

If we wake up the vnode washer in getnewvnode(), sleep until it is done,
so that it has a chance to offer us a washed vnode.  If we don't sleep
here we'll just race ahead and allocate yet a vnode which will never
get freed.

In the vnodewasher, instead of doing 10 vnodes per mountpoint per
rotation, do 10% of the vnodes distributed evenly across the
mountpoints.
2002-12-29 10:39:05 +00:00
Alan Cox
a28cc55e5b Reduce the number of times that we acquire and release the page queues
lock by making vm_page_rename()'s caller, rather than vm_page_rename(),
responsible for acquiring it.
2002-12-29 07:17:06 +00:00
Jake Burkholder
24fbeaf9c3 Don't put a newline in KTR traces. 2002-12-28 23:22:22 +00:00
Jake Burkholder
dcc4093c7a Add a tunable kern.smp.disabled for disabling explicitly smp on an smp
kernel.
2002-12-28 23:21:13 +00:00
Poul-Henning Kamp
9f16282798 KASSERT that vop_revoke() gets a VCHR. 2002-12-28 22:27:14 +00:00
Poul-Henning Kamp
f53c6e5c9a Remove unused cdevsw_ALLOCSTART macro. 2002-12-28 21:47:43 +00:00
Poul-Henning Kamp
7068a01c6f Remove cdevsw_add calls, they are deprecated. 2002-12-28 21:39:46 +00:00
Matthew Dillon
45587e2514 Abstract-out the constants for the sequential heuristic.
No operational changes.

MFC after:	1 day
2002-12-28 20:28:10 +00:00
Julian Elischer
93a7aa79d6 Add code to ddb to allow backtracing an arbitrary thread.
(show thread {address})

Remove the IDLE kse state and replace it with a change in
the way threads sahre KSEs. Every KSE now has a thread, which is
considered its "owner" however a KSE may also be lent to other
threads in the same group to allow completion of in-kernel work.
n this case the owner remains the same and the KSE will revert to the
owner when the other work has been completed.

All creations of upcalls etc. is now done from
kse_reassign() which in turn is called from mi_switch or
thread_exit(). This means that special code can be removed from
msleep() and cv_wait().

kse_release() does not leave a KSE with no thread any more but
converts the existing thread into teh KSE's owner, and sets it up
for doing an upcall. It is just inhibitted from being scheduled until
there is some reason to do an upcall.

Remove all trace of the kse_idle queue since it is no-longer needed.
"Idle" KSEs are now on the loanable queue.
2002-12-28 01:23:07 +00:00
Robert Watson
f0bc12ee8d Improve consistency between devfs and MAKEDEV: use UID_ROOT and
GID_WHEEL instead of UID_BIN and GID_BIN for /dev/fd/* entries.

Submitted by:	kris
2002-12-27 16:54:44 +00:00
Alfred Perlstein
5590e7fdf0 Lock filedesc while performing a range check on the file descriptor.
Reviewed by: alc
2002-12-27 08:39:42 +00:00
Alan Cox
d746789347 Hold the page queues lock when calling vm_page_flag_clear(). 2002-12-27 06:52:32 +00:00
Jeffrey Hsu
6f782c4636 Ensure that the made-up inode number for a Unix domain socket is persistent. 2002-12-25 07:59:39 +00:00
Robert Watson
79191eca57 Flush vop_refreshlabel() definition, since it is no longer used.
Obtained from:	TrustedBSD Project
Sponsored by:	DARPA, Network Associates Laboratories
2002-12-24 19:47:13 +00:00
Poul-Henning Kamp
a7010ee2f4 White-space changes. 2002-12-24 09:44:51 +00:00
Jeffrey Hsu
956b0b653c SMP locking for radix nodes. 2002-12-24 03:03:39 +00:00
Poul-Henning Kamp
08c7670a8b Move the declaration of the socket fileops from socketvar.h to file.h.
This allows us to use the new typedefs and removes the needs for a number
of forward struct declarations in socketvar.h
2002-12-23 22:46:47 +00:00
Poul-Henning Kamp
f3a682116c Detediousficate declaration of fileops array members by introducing
typedefs for them.
2002-12-23 21:53:20 +00:00
Poul-Henning Kamp
6ce9c72c30 s/sokqfilter/soo_kqfilter/ for consistency with the naming of all
other socket/file operations.
2002-12-23 21:37:28 +00:00
Alan Cox
0cb6c00463 - Hold the kernel_object's lock around vm_page_alloc(kernel_object,...).
- Hold the page queues lock around vm_page_wakeup().
2002-12-23 20:10:47 +00:00
Jake Burkholder
c3c2862df4 - Add a spin lock to single thread cache invalidation and tlb flush ipis,
which allows ipis to be sent outside of Giant.
- Remove the ap boot mutex, which is unused.
2002-12-22 20:50:23 +00:00
Kris Kennaway
4ef3d7a27b Enforce correct ordering of the filedesc structure and pipe mutex, because
WITNESS can get the order wrong if it guesses based on first use.

Reviewed by:	jhb, alfred
2002-12-22 16:32:34 +00:00
Jeffrey Hsu
b30a244c34 SMP locking for ifnet list. 2002-12-22 05:35:03 +00:00
Marcel Moolenaar
551d79e177 Fix multiple registration of the elf_legacy_coredump sysctl variable.
The duplication is caused by the fact that imgact_elf.c is included
by both imgact_elf32.c and imgact_elf64.c and both are compiled by
default on ia64. Consequently, we have two seperate copies of the
elf_legacy_coredump variable due to them being declared static, and
two entries for the same sysctl in the linker set, both referencing
the unique copy of the elf_legacy_coredump variable. Since the second
sysctl cannot be registered, one of the elf_legacy_coredump variables
can not be tuned (if ordering still holds, it's the ELF64 related one).

The only solution is to create two different sysctl variables, just
like the elf<32|64>_trace sysctl variables. This unfortunately is an
(user) interface change, but unavoidable. Thus, on ELF32 platforms
the sysctl variable is called elf32_legacy_coredump and on ELF64
platforms it is called elf64_legacy_coredump. Platforms that have
both ELF formats have both sysctl variables.

These variables should probably be retired sooner rather than later.
2002-12-21 01:15:39 +00:00
Sam Leffler
91974ce10b add generic rate limiting support from netbsd; ratelimit is purely time based,
ppsratecheck is for controlling packets/second

Obtained from:	netbsd
2002-12-20 23:54:47 +00:00
Alan Cox
2952e1fb58 Extend the scope of the page queues lock in vm_pgmoveco(). 2002-12-20 21:18:29 +00:00
Maxime Henrion
894db7b01f Don't forget to destroy the mutex if an error occurs
in the jail() system call.

Submitted by:	Pawel Jakub Dawidek <nick@garage.freebsd.pl>
2002-12-20 14:32:20 +00:00
Alan Cox
ee113343eb Hold the page queues lock when performing vm_page_busy(). 2002-12-18 20:16:22 +00:00
Poul-Henning Kamp
4d99ef8d55 Indent properly. 2002-12-17 19:31:26 +00:00
Poul-Henning Kamp
126c7e29fe Remove unused variable cn_devfsdev. 2002-12-17 19:30:50 +00:00
Poul-Henning Kamp
d321df47c3 Don't cast a pointer to (intptr_t) and then on to (int) when we cannot
be sure that (int) is large enough.  Instead cast only to (intptr_t) and
cast the switch/case values to (intptr_t) as well.
2002-12-17 19:13:03 +00:00
Matthew Dillon
fa7dd9c5bc Change the way ELF coredumps are handled. Instead of unconditionally
skipping read-only pages, which can result in valuable non-text-related
data not getting dumped, the ELF loader and the dynamic loader now mark
read-only text pages NOCORE and the coredump code only checks (primarily) for
complete inaccessibility of the page or NOCORE being set.

Certain applications which map large amounts of read-only data will
produce much larger cores.  A new sysctl has been added,
debug.elf_legacy_coredump, which will revert to the old behavior.

This commit represents collaborative work by all parties involved.
The PR contains a program demonstrating the problem.

PR:		kern/45994
Submitted by:	"Peter Edwards" <pmedwards@eircom.net>, Archie Cobbs <archie@dellroad.org>
Reviewed by:	jdp, dillon
MFC after:	7 days
2002-12-16 19:24:43 +00:00
Robert Drehmel
0adb6d7a49 Remove the hto(be|le)[slq] and (be|le)toh[slq] macros defined in
_KERNEL scope from "src/sys/sys/mchain.h".

Replace each occurrence of the above in _KERNEL scope with the
appropriate macro from the set of hto(be|le)(16|32|64) and
(be|le)toh(16|32|64) from "src/sys/sys/endian.h".

Tested by:		tjr
Requested by:		comment marked with XXX
2002-12-16 16:20:06 +00:00
Matthew Dillon
72e7f3ddc2 Regenerate system calls (swapoff added) 2002-12-15 19:19:15 +00:00
Matthew Dillon
92da00bb24 This is David Schultz's swapoff code which I am finally able to commit.
This should be considered highly experimental for the moment.

Submitted by:	David Schultz <dschultz@uclink.Berkeley.EDU>
MFC after:	3 weeks
2002-12-15 19:17:57 +00:00