Commit Graph

4994 Commits

Author SHA1 Message Date
alfred
b7edb33754 Partial backout of 1.318, remove error handling added because it may be
incorrect.

Requested by: bde
2002-06-30 05:23:58 +00:00
iedowse
b5040e7472 Add a hashdestroy() function to undo the actions of hashinit(). 2002-06-30 02:07:26 +00:00
alfred
b3a394a74c Fix several style bugs:
close up the continued line after removing the cast made the line.
space before parentheses in indirect function call.

Add an addtional error handler case for the results of callback.

Submitted by: bde
2002-06-29 17:58:44 +00:00
alfred
ce846a9c49 Unbreak computation of 'smask' that I broke when removing caddr_t.
Submitted by: bde
2002-06-29 17:56:34 +00:00
julian
aa2dc0a5d9 Part 1 of KSE-III
The ability to schedule multiple threads per process
(one one cpu) by making ALL system calls optionally asynchronous.
to come: ia64 and power-pc patches, patches for gdb, test program (in tools)

Reviewed by:	Almost everyone who counts
	(at various times, peter, jhb, matt, alfred, mini, bernd,
	and a cast of thousands)

	NOTE: this is still Beta code, and contains lots of debugging stuff.
	expect slight instability in signals..
2002-06-29 17:26:22 +00:00
julian
a06b68b34f Add files that are new for KSE. 2002-06-29 07:04:59 +00:00
obrien
4db8ac83cb Rename the db command lockedvnodes to lockedvnods so that it fits on the
help screen and one doens't think we have a lockedvnodesmap command.
2002-06-29 04:45:09 +00:00
alfred
97873dcbf3 more caddr_t removal. 2002-06-29 02:00:02 +00:00
alfred
d1cbf6a1d1 More caddr_t removal, make fo_ioctl take a void * instead of a caddr_t. 2002-06-29 01:50:25 +00:00
alfred
d92411ce7a catch up with mextadd callback taking a void argument instead of a caddr_t. 2002-06-29 01:49:22 +00:00
alfred
8cd894ca70 More caddr_t removal.
Change struct knote's kn_hook from caddr_t to void *.
2002-06-29 00:29:12 +00:00
alfred
d47feb4376 nuke more instances of caddr_t 2002-06-29 00:02:01 +00:00
alfred
65984a1f06 m_extadd takes a void (*freef)(void *, void *) now, not a
void (*freef)(caddr_t, void *).
2002-06-29 00:01:46 +00:00
alfred
b0475cc9d5 remove or replace caddr_t with void.
make the mbuf external free function take a void * rather than caddr_t.
2002-06-28 23:48:23 +00:00
alfred
708aac7550 nuke caddr_t. 2002-06-28 23:17:36 +00:00
alfred
ae44f24f87 Remove unneeded casts to caddr_t. 2002-06-28 23:02:38 +00:00
alfred
d1029cb00e document that the pipe fo_stat routine doesn't need locks because it's
a read operation.

Requested by: rwatson
2002-06-28 22:35:12 +00:00
jeff
1ed9e0f375 Improve the VOP locking asserts
- Add vfs_badlock_print to control whether or not we print lock violations
 - Add vfs_badlock_panic to control whether we panic on lock violations

Both default to on to mimic the original behavior if DEBUG_VFS_LOCKS is on.
2002-06-28 20:58:14 +00:00
iedowse
792737cf4d In vn_mkdir(), use vrele() instead of vput() on the parent directory
vnode in the case that the target exists and is the same vnode as
the parent (i.e. "mkdir ."). The namei() call does not leave the
vnode locked in this case even though you might expect it to.

This bug was mostly harmless in practice because unlocking an already
unlocked vnode currently does not trigger any panics or warnings.

Reviewed by:	jeff
2002-06-28 20:06:47 +00:00
jeff
9fbb8d216f Clean up vn_rdwr locking.
- Do shared locks on read.
 - Only do vn_{start,finished}_write when writing.
2002-06-28 17:51:11 +00:00
green
62d02a6b93 Fix a case where a vnode got explicitly unlocked after the pointer to it
got set to NULL.

Revision 1.355: in the box
2002-06-28 16:17:47 +00:00
luigi
f5aea44c67 Remove a printf and add a comment on an assumption that could be
occasionally violated by device drivers.
2002-06-27 23:23:04 +00:00
rwatson
c282ad9b24 Fix a bug that prevented the deletion of non-default ACLs from being
passed down the VFS stack.  While I'm here, replace a '0' with a 'NULL'
to make the code more readable.

Sponsored by:	DARPA, NAI Labs
Obtained from:	TrustedBSD Project
2002-06-27 19:31:15 +00:00
rwatson
99f90043d5 A bit of whitespace magic. 2002-06-27 19:30:11 +00:00
ken
0d3a835f3f At long last, commit the zero copy sockets code.
MAKEDEV:	Add MAKEDEV glue for the ti(4) device nodes.

ti.4:		Update the ti(4) man page to include information on the
		TI_JUMBO_HDRSPLIT and TI_PRIVATE_JUMBOS kernel options,
		and also include information about the new character
		device interface and the associated ioctls.

man9/Makefile:	Add jumbo.9 and zero_copy.9 man pages and associated
		links.

jumbo.9:	New man page describing the jumbo buffer allocator
		interface and operation.

zero_copy.9:	New man page describing the general characteristics of
		the zero copy send and receive code, and what an
		application author should do to take advantage of the
		zero copy functionality.

NOTES:		Add entries for ZERO_COPY_SOCKETS, TI_PRIVATE_JUMBOS,
		TI_JUMBO_HDRSPLIT, MSIZE, and MCLSHIFT.

conf/files:	Add uipc_jumbo.c and uipc_cow.c.

conf/options:	Add the 5 options mentioned above.

kern_subr.c:	Receive side zero copy implementation.  This takes
		"disposable" pages attached to an mbuf, gives them to
		a user process, and then recycles the user's page.
		This is only active when ZERO_COPY_SOCKETS is turned on
		and the kern.ipc.zero_copy.receive sysctl variable is
		set to 1.

uipc_cow.c:	Send side zero copy functions.  Takes a page written
		by the user and maps it copy on write and assigns it
		kernel virtual address space.  Removes copy on write
		mapping once the buffer has been freed by the network
		stack.

uipc_jumbo.c:	Jumbo disposable page allocator code.  This allocates
		(optionally) disposable pages for network drivers that
		want to give the user the option of doing zero copy
		receive.

uipc_socket.c:	Add kern.ipc.zero_copy.{send,receive} sysctls that are
		enabled if ZERO_COPY_SOCKETS is turned on.

		Add zero copy send support to sosend() -- pages get
		mapped into the kernel instead of getting copied if
		they meet size and alignment restrictions.

uipc_syscalls.c:Un-staticize some of the sf* functions so that they
		can be used elsewhere.  (uipc_cow.c)

if_media.c:	In the SIOCGIFMEDIA ioctl in ifmedia_ioctl(), avoid
		calling malloc() with M_WAITOK.  Return an error if
		the M_NOWAIT malloc fails.

		The ti(4) driver and the wi(4) driver, at least, call
		this with a mutex held.  This causes witness warnings
		for 'ifconfig -a' with a wi(4) or ti(4) board in the
		system.  (I've only verified for ti(4)).

ip_output.c:	Fragment large datagrams so that each segment contains
		a multiple of PAGE_SIZE amount of data plus headers.
		This allows the receiver to potentially do page
		flipping on receives.

if_ti.c:	Add zero copy receive support to the ti(4) driver.  If
		TI_PRIVATE_JUMBOS is not defined, it now uses the
		jumbo(9) buffer allocator for jumbo receive buffers.

		Add a new character device interface for the ti(4)
		driver for the new debugging interface.  This allows
		(a patched version of) gdb to talk to the Tigon board
		and debug the firmware.  There are also a few additional
		debugging ioctls available through this interface.

		Add header splitting support to the ti(4) driver.

		Tweak some of the default interrupt coalescing
		parameters to more useful defaults.

		Add hooks for supporting transmit flow control, but
		leave it turned off with a comment describing why it
		is turned off.

if_tireg.h:	Change the firmware rev to 12.4.11, since we're really
		at 12.4.11 plus fixes from 12.4.13.

		Add defines needed for debugging.

		Remove the ti_stats structure, it is now defined in
		sys/tiio.h.

ti_fw.h:	12.4.11 firmware.

ti_fw2.h:	12.4.11 firmware, plus selected fixes from 12.4.13,
		and my header splitting patches.  Revision 12.4.13
		doesn't handle 10/100 negotiation properly.  (This
		firmware is the same as what was in the tree previously,
		with the addition of header splitting support.)

sys/jumbo.h:	Jumbo buffer allocator interface.

sys/mbuf.h:	Add a new external mbuf type, EXT_DISPOSABLE, to
		indicate that the payload buffer can be thrown away /
		flipped to a userland process.

socketvar.h:	Add prototype for socow_setup.

tiio.h:		ioctl interface to the character portion of the ti(4)
		driver, plus associated structure/type definitions.

uio.h:		Change prototype for uiomoveco() so that we'll know
		whether the source page is disposable.

ufs_readwrite.c:Update for new prototype of uiomoveco().

vm_fault.c:	In vm_fault(), check to see whether we need to do a page
		based copy on write fault.

vm_object.c:	Add a new function, vm_object_allocate_wait().  This
		does the same thing that vm_object allocate does, except
		that it gives the caller the opportunity to specify whether
		it should wait on the uma_zalloc() of the object structre.

		This allows vm objects to be allocated while holding a
		mutex.  (Without generating WITNESS warnings.)

		vm_object_allocate() is implemented as a call to
		vm_object_allocate_wait() with the malloc flag set to
		M_WAITOK.

vm_object.h:	Add prototype for vm_object_allocate_wait().

vm_page.c:	Add page-based copy on write setup, clear and fault
		routines.

vm_page.h:	Add page based COW function prototypes and variable in
		the vm_page structure.

Many thanks to Drew Gallatin, who wrote the zero copy send and receive
code, and to all the other folks who have tested and reviewed this code
over the years.
2002-06-26 03:37:47 +00:00
arr
5290d081cc - Remove Giant acquisition from modevent(), modfnext(), modstat() and
modfind().  Giant is no longer needed by these functions for safe
  execution.

Reviewed by:	jhb
2002-06-26 00:31:44 +00:00
arr
b6fded0faf - Alleviate jail() from having the burden of acquiring Giant by simply
removing.  We can do this since we no longer need Giant to safely
  execute jail().

Reviewed by:	rwatson, jhb
2002-06-26 00:29:01 +00:00
alc
698aabc226 o Eliminate vmspace::vm_minsaddr. It's initialized but never used.
o Replace stale comments in vmspace by "const until freed" annotations
   on some fields.
2002-06-25 18:14:38 +00:00
jake
e102a9b6dd Add an MD callout like cpu_exit, but which is called after sched_lock is
obtained, when all other scheduling activity is suspended.  This is needed
on sparc64 to deactivate the vmspace of the exiting process on all cpus.
Otherwise if another unrelated process gets the exact same vmspace structure
allocated to it (same address), its address space will not be activated
properly.  This seems to fix some spontaneous signal 11 problems with smp
on sparc64.
2002-06-24 15:48:02 +00:00
mux
48b8a20cbe Bring sys/kern/md5c.c in sync with the userland version.
Add a comment so that people don't forget to keep the
version in src/lib/libmd/md5c.c in sync with this one.
This fixes a warning on sparc64.

Reviewed by:	phk
2002-06-24 14:15:25 +00:00
mckusick
7d70f5926f Use proper size in bzero of stat structure.
Submitted by:	Jake Burkholder <jake@locore.ca>
Sponsored by:	DARPA & NAI Labs.
2002-06-24 07:14:44 +00:00
mini
ef6f2f567d Remove unused diagnostic function cread_free_thread().
Approved by:	alfred
2002-06-24 06:22:00 +00:00
dillon
3bb3ab3df2 I Noticed a defect in the way wakeup() scans the tailq. Tor noticed an
even worse defect in wakeup_one().  This patch cleans up both.

Submitted by:	tegge
MFC after:	3 days
2002-06-24 00:14:36 +00:00
mux
abb73c48ca More 64 bits platforms warning fixes.
Reviewed by:	rwatson
2002-06-23 18:32:39 +00:00
mckusick
f09d0a42d9 This patch fixes a size problem with the stat structure for
64-bit architectures that was introduced in the UFS2 code
merge two days ago. The stat structure change that caused
the problem was the addition of the file create time.

Submitted by:	Bruce Evans <bde@zeta.org.au>
Sponsored by:	DARPA & NAI Labs.
2002-06-22 22:01:13 +00:00
mux
df8395282d We don't need to check the return value of malloc() against
NULL when the M_WAITOK flag is specified.
2002-06-22 21:44:11 +00:00
dillon
0af4a7d8da Fix a bug in vfs_bio_clrbuf(). The single-page-clrbuf optimization was
improperly clearing more then just the invalid portions of the page.  (This
bug is not known to have been triggered by anything).

Submitted by:	tegge
MFC after:	7 days
2002-06-22 19:09:35 +00:00
mux
24aca74f2d o Remove the initialization of unused fields in the struct
uio now that we don't use uiomove() anymore.
o Enforce stricter checks on the length of the iov's in
  nmount(2) since we now malloc() them individually and
  corrupted iov's could make the kernel crash in malloc()
  with "kmem_map too small".

Reviewed by:	phk
2002-06-22 18:07:05 +00:00
mini
783d5aaa2c Always drop the p_args reference we held for copyout, even if we're about
to change it. This fixes a leak triggered by setproctitle(3).

Approved by:	alfred
Noticed by:	Peter Jeremy <peter.jeremy@alcatel.com.au>
2002-06-22 10:05:50 +00:00
mckusick
88d85c15ef This commit adds basic support for the UFS2 filesystem. The UFS2
filesystem expands the inode to 256 bytes to make space for 64-bit
block pointers. It also adds a file-creation time field, an ability
to use jumbo blocks per inode to allow extent like pointer density,
and space for extended attributes (up to twice the filesystem block
size worth of attributes, e.g., on a 16K filesystem, there is space
for 32K of attributes). UFS2 fully supports and runs existing UFS1
filesystems. New filesystems built using newfs can be built in either
UFS1 or UFS2 format using the -O option. In this commit UFS1 is
the default format, so if you want to build UFS2 format filesystems,
you must specify -O 2. This default will be changed to UFS2 when
UFS2 proves itself to be stable. In this commit the boot code for
reading UFS2 filesystems is not compiled (see /sys/boot/common/ufsread.c)
as there is insufficient space in the boot block. Once the size of the
boot block is increased, this code can be defined.

Things to note: the definition of SBSIZE has changed to SBLOCKSIZE.
The header file <ufs/ufs/dinode.h> must be included before
<ufs/ffs/fs.h> so as to get the definitions of ufs2_daddr_t and
ufs_lbn_t.

Still TODO:
Verify that the first level bootstraps work for all the architectures.
Convert the utility ffsinfo to understand UFS2 and test growfs.
Add support for the extended attribute storage. Update soft updates
to ensure integrity of extended attribute storage. Switch the
current extended attribute interfaces to use the extended attribute
storage. Add the extent like functionality (framework is there,
but is currently never used).

Sponsored by: DARPA & NAI Labs.
Reviewed by:	Poul-Henning Kamp <phk@freebsd.org>
2002-06-21 06:18:05 +00:00
mux
3770ca4156 Change the way we internally store the mount options to
a linked list.  This is to allow the merging of the mount
options in the MNT_UPDATE case, as the current data structure
is unsuitable for this.

There are no functional differences in this commit.

Reviewed by:	phk
2002-06-20 20:03:42 +00:00
alfred
619c88aeeb Implement SO_NOSIGPIPE option for sockets. This allows one to request that
an EPIPE error return not generate SIGPIPE on sockets.

Submitted by: lioux
Inspired by: Darwin
2002-06-20 18:52:54 +00:00
alfred
4f8d67f852 Don't leak resources if fdcheckstd() fails during exec.
Submitted by: Mike Makonnen <makonnen@pacbell.net>
2002-06-20 17:27:28 +00:00
iedowse
ddd0934a7c Display the mutex name in the ^T status line if the selected thread
is blocked on a mutex. Prepend a '*' to distinguish this case as
is done in top(1).
2002-06-20 14:03:36 +00:00
peter
72c289faf4 Remove UIO_USERISPACE - we do not support any split instruction/data
address space machines (eg: pdp-11) and are not likely to ever do so.
Nothing in our kernel sets this.
2002-06-20 07:08:43 +00:00
peter
4830c34648 Move the "- 1" into the RQB_FFS(mask) macro itself so that
implementations can provide a base zero ffs function if they wish.
This changes
  #define RQB_FFS(mask) (ffs64(mask))
  foo = RQB_FFS(mask) - 1;
to
  #define RQB_FFS(mask) (ffs64(mask) - 1)
  foo = RQB_FFS(mask);
On some platforms we can get the "- 1" for free, eg: those that use the
C code for ffs64().

Reviewed by:	jake (in principle)
2002-06-20 06:21:20 +00:00
arr
646109847c - Remove the lock(9) protecting the kernel linker system.
- Added a mutex, kld_mtx, to protect the kernel_linker system.  Note that
  while ``classes'' is global (to that file), it is only read only after
  SI_SUB_KLD, SI_ORDER_ANY.
- Add a SYSINIT to flip a flag that disallows class registration after
  SI_SUB_KLD, SI_ORDER_ANY.

Idea for ``classes'' read only by:	jake
Reviewed by:	jake
2002-06-19 21:25:59 +00:00
phk
1f4e9c0c72 Remove the compat bits for the mis-aligned struct disklabel on alpha,
people got three times longer than I promised.

Sponsored by: DARPA & NAI Labs.
2002-06-19 08:37:02 +00:00
alfred
bfa1cb192c Squish the "could sleep with process lock" messages caused by calling
uifind() with a proc lock held.

change_ruid() and change_euid() have been modified to take a uidinfo
structure which will be pre-allocated by callers, they will then
call uihold() on the uidinfo structure so that the caller's logic
is simplified.

This allows one to call uifind() before locking the proc struct and
thereby avoid a potential blocking allocation with the proc lock
held.

This may need revisiting, perhaps keeping a spare uidinfo allocated
per process to handle this situation or re-examining if the proc
lock needs to be held over the entire operation of changing real
or effective user id.

Submitted by: Don Lewis <dl-freebsd@catspoiler.org>
2002-06-19 06:39:25 +00:00
alfred
90955db2d9 setsugid() touches p->p_flag so assert that the proc is locked. 2002-06-18 22:41:35 +00:00