implementation. This flag will indicate that the security label
in the vnode is currently valid, and therefore doesn't need to
be refreshed before an access control decision can be made. Most
file systems (or stdvops) will set this flag after they load the
MAC label from disk the first time to prevent redundant disk I/O;
some file synthetic file systems (procfs, for example) may not.
Obtained from: TrustedBSD Project
Sponsored by: DARPA, NAI Labs
MAC support will be merged into the main tree over the next week in
reasonable size chunks; much more to follow.
Obtained from: TrustedBSD Project
Sponsored by: DARPA, NAI Labs
during execve() to use a 'credential_changing' variable. This makes it
easier to have outstanding patchsets against this code, as well as to
add conditionally defined clauses.
Obtained from: TrustedBSD Project
Sponsored by: DARPA, NAI Labs
since it breaks mtx_owned() on spin mutexes when used outside of
mtx_assert(). Unfortunately we currently use it in the i386 MD code
and in the sio(4) driver.
Reported by: bde
o reduce the extra-long ID names.
o TI-1510, 1520 and 4510 support.
o MFUNC is the name of the register on TI 1200 and newer chips (except
125x and 1450). Initialize it in the func routine, but only
if NO_MFUNC isn't set.
o better comments about above workaround
o register definitions for MFUNC.
o move zoom video disable to a better place.
o Rename the insanely long PCIC bridge ids.
o Add my copyright to pccbb.c
o Add support for the TI-1510, TI-1520 and TI-4510 series of upcoming
bridges.
o Init MFUNC if it is zero and the TI part has a MFUNC register
at offset 0x8c (1030, 1130 and 1131 don't have anything there, the
1250,1251,1251B and 1450 have a different thing there. The rest
have it. TI is likely to only do MFUNC from now on. The IRQMUX
in the 1250 series of chips needs no tweaks.
o Adjust to new exca interface.
o Add comments about TI chips that I learned in talking to an
engineer at TI.
o Add register definitions for MFUNC.
o Create CB_TI125X chipset type.
o Protect .h against multiple includes.
o eliminate the pointers to the read/write routines. The
bus_space_read routines can cope since we have the offset
field.
o Print a warning if the requested map address is > 16M and
your chipset doesn't support the extended ExCA registers.
of the Netgear GA302-T. I changed the symbolic names in the
submitter's patch to reflect the part number of the chip instead
of the board.
PR: kern/38988
Submitted by: Brad Chapman <chapmanb@arches.uga.edu>
MFC after: 2 days
Through the PITA of endiannness, clock has to be MHz freq << 8.
Don't trust NVRAM on SBus cards.
Set a default initiator ID sensibly.
SBus/ISP now working, what with the change to sbus.c earlier today.
vm_page_rename() from vm_object_backing_scan(). vm_page_rename()
also performs vm_page_deactivate() on pages in the cache queues,
making the removed vm_page_deactivate() redundant.
flags include INTR_MPSAFE. Put the flags in a common place so that
both isp_sbus && isp_pci DTRT.
In isp_mbxdma setup, drop any locks prior to calling things like
bus_dmatag_create. This gets rid of these obnoxious WITNESS messages
about 'sleeping with locks held' blah blah blah blah blah.
'single threading thread' when the last other thread suspends.
I had this code in there before but it seems to have been
accidentally deleted somewhere along the way. This would only affect
multithreaded processes.
Reviewed by: David Xu <bsddiy@yahoo.com>
pnbuf to increase the chances of detecting use of a free'd name buffer
if SAVENAME or SAVESTART wasn't passed in. Curiously, running with these
changes doesn't panic the kernel, and should.
of the inlines, like its cousin, m_free(). Also, make a small (first
step?) optimisation of m_free() to use the MBP_PERSIST{,ENT} interface
to hold the lock across frees when possible. The thing is that right
now, we can only do this easily for at most across one mbuf + one
cluster free, as the comment mentions (it also explains why). Anyway,
some basic tests revealed a 5-10% overall improvement. Some of the
results can be found here:
http://people.freebsd.org/~bmilekic/code/measure.txt
a ucred by itself as part of an nfs descriptor, then bzero's the ucred,
fails to initialize the mutex, etc. This is very bad, but I don't have
time to fix it right now. nfsd should instead hold a cred pointer,
and the credential should be properly initialized, probably from a
descendent of a kernel process credential.
non-default but reasonable values of hz this member overflowed,
breaking NFS over UDP.
Also, as long as I'm plowing up struct sockbuf ... Change certain
members from u_long/long to u_int/int in order to reduce wasted
space on 64-bit machines. This change was requested by Andrew
Gallatin.
Netstat and systat need to be rebuilt. I am incrementing
__FreeBSD_version in case any ports need to change.
is that grouped frees will be done as most often as possible without
dropping the cache lock in between. So, for the most part, they'll be
done without the lock being dropped. This is particularly true if you
have something that does a grouped m_getm() or m_getcl() (a cluster and
mbuf at the same time) - most likely getting the buffers from the
same per-CPU cache - and then frees them with m_free{,m}(). Unless
the buffers' underlying buckets were moved, the free will be done without
the lock getting dropped in between. So far, only m_free() has been
shown how to do this, and m_freem() will shortly follow.
Since I'm here, I also fixed a small (but mostly harmless) type-mismatch
introduced in the last commit.
has been specified through /boot/loader.conf as opposed to setting it
in /etc/sysctl.conf. Only PCMDIR_PLAY channel can be used as a parent
of virtual channel. Do not initialize a new vchan for a given physical
channel if other physical channel already has one created.
PR: 31597
Approved by: obrien (mentor)
disk devices. This fixes the problem with these ioctls returning
EINVAL for plain slice devices with no disklabel on them.
The patch incorporates improvements and style fixes from BDE.
Reviewed by: bde
Approved by: obrien (mentor)
do_sendfile(). This allows us to rearrange an if statement in order to
avoid doing an unnecesary call to vm_page_lock_queues(), and an attempt
at re-wiring the pages (which were wired in the vm_page_alloc() call).
Reviewed by: alc, jhb
o Honor NE2000DVF_{AX88190,DL10019} flags by setting the ED_FLAGS_xxxx
flag.
o Mark linksys combo_ecard as ax88190
o Set the type_str to AX88190 for the ax88190 cards.
This fixes ax88190 based cards, for the most part, but doesn't seem to fix
the mii based dl10019 cards (aka linksys cards).
This is required for some Thinkpad (and maybe VAIO) machines to wake
the system up from sleep.
Currently partially implemented, more complete implementation will come later.
open() of fhopen(). Currently this has no actual affect due to the
treatment of VAPPEND in vaccess() and vaccess_acl() as a subset of
VWRITE, but when MAC comes in, MAC will distinguish the two. Note:
if any file systems are cutting their own permission models, they
may wish to now take this into account.
Obtained from: TrustedBSD Project
Sponsored by: DARPA, NAI Labs
the slot info. This brings OLDCARD's API much closer to NEWCARD and
will allow moving more information into the kernel from pccard.conf
for common drivers (ed).
pci support. This really needs to be fixed properly some day, but judging
by the fact that the nopci case hasn't compiled for quite a while, there
does not seem to be much urgency.
Reviewed by: sos
This driver actually works slightly better on -stable than on -current
(the system locks on detach on -current), so it should be MFC'd somewhat
sooner.
This driver currently points out a difficulty in the sound device framework.
The PCM unregister routine is allowed to refuse the detach if the device is
in use. In the case of a USB device, however, this unregistration is much more
mandatory in nature, since the device is *actually* gone when this call is
made. The sound subsystem really should not refuse an unregistration and
should take its own steps to reject further I/O. As a result, if you detach
a USB sound device while it is in use, you can expect a panic shortly
thereafter.
This device cannot currently record audio. Some routines are unwritten as
of yet in uaudio.c to support recording.
This device hangs my -current box on detach. I don't know why. This does
not happen on my -stable machine.
Obtained from: Hiroyuki Aizu
MFC after: 2 weeks
data structures pick up security and synchronization primitives, it
becomes increasingly desirable not to arbitrarily export them via
include files to userland, as the userland applications pick up new
#include dependencies.
Obtained from: TrustedBSD Project
Sponsored by: DARPA, NAI Labs
windows. Right now we only support pci chips that are memory mapped.
These are the most common bridges in use today and will help a large
majority of the users.
I/O mapped PCI chips support this functionality in a different way, as
do some of the ISA bridges (but only when mounted on a motherboard).
These chips are not supported by this change.
Bug#1: The GetStatus() function returns radically different pointers that
do not match any packets we transmitted. I think it might be pointing to
a copy of the packet or something. Since we do not transmit more than
one packet at a time, just wait for "anything".
Bug#2: The Receive() function takes a pointer and a length. However, it
either ignores the length or otherwise does bad things and writes outside
of ptr[0] through ptr[len-1]. This is bad and causes massive stack
corruption for us since we are receiving packets into small buffers on
the stack. Instead, Receive() into a large enough buffer and bcopy the
data to the requested area.
handler in the kernel at the same time. Also, allow for the
exec_new_vmspace() code to build a different sized vmspace depending on
the executable environment. This is a big help for execing i386 binaries
on ia64. The ELF exec code grows the ability to map partial pages when
there is a page size difference, eg: emulating 4K pages on 8K or 16K
hardware pages.
Flesh out the i386 emulation support for ia64. At this point, the only
binary that I know of that fails is cvsup, because the cvsup runtime
tries to execute code in pages not marked executable.
Obtained from: dfr (mostly, many tweaks from me).
the loadav. This is not real load. If you have a nice process running in
the background, pagezero may sit in the run queue for ages and add one to
the loadav, and thereby affecting other scheduling decisions.
- Sanity check the mount options list (remove duplicates) with
vfs_sanitizeopts().
- Fix some malloc(0)/free(NULL) bugs.
Reviewed by: rwatson (some time ago)
As this code is not actually used by any of the existing
interfaces, it seems unlikely to break anything (famous
last words).
The internal kernel interface to manipulate these attributes
is invoked using two new IO_ flags: IO_NORMAL and IO_EXT.
These flags may be specified in the ioflags word of VOP_READ,
VOP_WRITE, and VOP_TRUNCATE. Specifying IO_NORMAL means that
you want to do I/O to the normal data part of the file and
IO_EXT means that you want to do I/O to the extended attributes
part of the file. IO_NORMAL and IO_EXT are mutually exclusive
for VOP_READ and VOP_WRITE, but may be specified individually
or together in the case of VOP_TRUNCATE. For example, when
removing a file, VOP_TRUNCATE is called with both IO_NORMAL
and IO_EXT set. For backward compatibility, if neither IO_NORMAL
nor IO_EXT is set, then IO_NORMAL is assumed.
Note that the BA_ and IO_ flags have been `merged' so that they
may both be used in the same flags word. This merger is possible
by assigning the IO_ flags to the low sixteen bits and the BA_
flags the high sixteen bits. This works because the high sixteen
bits of the IO_ word is reserved for read-ahead and help with
write clustering so will never be used for flags. This merge
lets us get away from code of the form:
if (ioflags & IO_SYNC)
flags |= BA_SYNC;
For the future, I have considered adding a new field to the
vattr structure, va_extsize. This addition could then be
exported through the stat structure to allow applications to
find out the size of the extended attribute storage and also
would provide a more standard interface for truncating them
(via VOP_SETATTR rather than VOP_TRUNCATE).
I am also contemplating adding a pathconf parameter (for
concreteness, lets call it _PC_MAX_EXTSIZE) which would
let an application determine the maximum size of the extended
atribute storage.
Sponsored by: DARPA & NAI Labs.
when VM_ALLOC_WIRED is specified: set the PG_MAPPED bit in flags.
o In both vm_page_wire() and vm_page_allocate() add a comment saying
that setting PG_MAPPED does not belong there.
net.inet.tcp.rexmit_min (default 3 ticks equiv)
This sysctl is the retransmit timer RTO minimum,
specified in milliseconds. This value is
designed for algorithmic stability only.
net.inet.tcp.rexmit_slop (default 200ms)
This sysctl is the retransmit timer RTO slop
which is added to every retransmit timeout and
is designed to handle protocol stack overheads
and delayed ack issues.
Note that the *original* code applied a 1-second
RTO minimum but never applied real slop to the RTO
calculation, so any RTO calculation over one second
would have no slop and thus not account for
protocol stack overheads (TCP timestamps are not
a measure of protocol turnaround!). Essentially,
the original code made the RTO calculation almost
completely irrelevant.
Please note that the 200ms slop is debateable.
This commit is not meant to be a line in the sand,
and if the community winds up deciding that increasing
it is the correct solution then it's easy to do.
Note that larger values will destroy performance
on lossy networks while smaller values may result in
a greater number of unnecessary retransmits.
that pre-zeroes free pages.
o Remove GIANT_REQUIRED from some low-level page queue functions. (Instead
assertions on the page queue lock are being added to the higher-level
functions, like vm_page_wire(), etc.)
In collaboration with: peter
identify this gadget on the CPUID result alone, so I intend to activate
the necessary magic (i8254 frequency for instance) for it based on the
precense of the on-chip host to PCI bridge.
Use lmin(long, long), not min(u_int, u_int). This is a problem here on
ia64 which has *way* more than 2^32 pages of KVA. 281474976710655 pages
to be precice.
This allows one to select the method of 3.3V card detection from the
three possible choices (none (0), the "6710 way" (1) and the "6729
way" (2)). The default is the 6710 way, since it works in the most
cases. The datasheets for the 6722 suggest that the '29 way is more
correct, but experience has shown this method to cause some laptops to
hang solid. See source code for details until I update the man page.
Submitted by: shibata-san (chiharu shibata <chi@bd.mbn.or.jp>)
o It needs to have pcic_isa_intr intrrupt handler
o for pci interrupts, in the func interrupt handler it needs to check the isa
registers rather than the pci ones for card present.
o better commentary for some of the strangeness of the 6729 on pci
o fix some crunchy comments to better reflect reality.
With this I almost have the WL200 working, but an interrupt storm
after attach is causing problems for reasons unknown. This code
doesn't seem to break the normal clpd6729 case, and I'd like others
with 6729 cards to try to test it (there were some that were used for
external pccard slots in pci only systems).
to return a wired page.
o Use VM_ALLOC_WIRED within Alpha's pmap_growkernel(). Also, because
Alpha's pmap_growkernel() calls vm_page_alloc() from within a critical
section, specify VM_ALLOC_INTERRUPT instead of VM_ALLOC_SYSTEM. (Only
VM_ALLOC_INTERRUPT is implemented entirely with a spin mutex.)
o Assert that the page queues mutex is held in vm_page_wire()
on Alpha, just like the other platforms.
so it needs an explicit #include <machine/frame.h> to get 'struct
trapframe'. The fact that it needs this at this level is rather bogus
but it will not compile without it.
one second but it badly breaks throughput on networks with minor packet
loss.
Complaints by: at least two people tracked down to this.
MFC after: 3 days
on the Itanium2 system I have when we use up *all* of the initial 256MB
direct mapped region before we are ready to dynamically expand it.
The machine that I have has 4 cpus and a very big hole in the middle.
This makes the bogus '(last_address - first_address) / PAGE_SIZE'
calculations especially dangerous and caused many millions of initial
PV/PTE's to be preallocated.
o Add preliminary support for Cirrus Logic CL-PD6729 using PCI
interrupts. To use it you you need to set hw.pcic.pd6729_intr_path
to 2. This is allow us to still default to ISA intrrupt path for
this part (which is found much more often in laptops using ISA IRQs).
But some PCI cards have this part on them and this should allow them
to be used. It is untested on PCI, but it seems to not break the ISA
case.
o Better sysctl descriptions (I hope).
machine will result in approximately a 4.2% loss of performance (buildworld)
and approximately a 5% reduction in power consumption (when idle). Add XXX
note on how to really make hlt work (send an IPI to wakeup HLTed cpus on
a thread-schedule event? Generate an interrupt somehow?).
in the .h file. Make it static __inline to make sure that it doesn't
wind up defined in any files.
Also, fix a typo that said null_do_attach instead of null_do_probe.
1.93; henning; MA401RA wi card
1.92; millert; elsa XI-325 wi card
1.91; fgsch; gemplus cpr400 smartcard reader
1.90; mickey; Nokia c110/c111 is prism2 card
1.89-1.86 (similar to what we do already)
The value we use is still questionable for 440BX chipsets.
- When flushing the TLB just toggle the bit in question instead of writing
a magic value that could trash other unrelated bits.
the filelist_lock and check nfiles. This closes a race where we had to
unlock the filedesc to re-lock the filelist_lock.
Reported by: David Xu
Reviewed by: bde (mostly)
after a panic which is not an interrupt thread, or the thread which
caused the panic. Also, remove panicstr checks from msleep() and from
cv_wait() in order to allow threads to go to sleep and yeild the cpu
to the panicing thread, or to an interrupt thread which might
be doing the crashdump.
Reviewed by: jhb (and it was mostly his idea too)
support creation times such as UFS2) to the value of the
modification time if the value of the modification time is older
than the current creation time. See utimes(2) for further details.
Sponsored by: DARPA & NAI Labs.
administrator to define certain properties of new devfs nodes before
they become visible to the userland. Both static (e.g., /dev/speaker)
and dynamic (e.g., /dev/bpf*, some removable devices) nodes are
supported. Each DEVFS mount may have a different ruleset assigned to
it, permitting different policies to be implemented for things like
jails.
Approved by: phk
system lockups (infinite loops) when a zero-length RPC is received.
Linux clients will sometimes send zero-length RPC requests.
Reorganize the use of recm in the loop.
Cc: security@freebsd.org
Submitted by: Mike Junk <junk@isilon.com>
MFC after: 3 days
vm_page_zero_idle() instead of partially duplicated implementations.
In particular, this change guarantees that the number of free pages
in the free queue(s) matches the global free page count when Giant
is released.
Submitted by: peter (via his p4 "pmap" branch)
of them, and couple them by always performing all operations on all
present IOMMUs. This is required because with the current API there
is no way to determine on which bus a busdma operation is performed.
While being there, clean up the iommu code a bit.
This should be a step in the direction of allow some of larger machines
to work; tests have shown that there still seem to be problems left.
obtain the send lock, we would bogusly try to unlock the send lock before
returning resulting in a panic. Instead, only unlock the send lock if
nfs_sndlock() succeeds and nfs_reconnect() fails.
MFC after: 3 days
Sponsored by: The Weather Channel
running with interrupts disabled, other cpus locked down, and only
making a temporary local mapping that we immediately back out again.
Tested by: gallatin
