caller is scsi_done which the controller interrupt handlers call. In the
case of a non-buffer based transaction, the xs structure is freed by the
process that initiated the transfer in scsi_scsi_cmd. In this case, an
explicit splbio/splx pair around the call to free_xs is required. Without
the splbio protection, the xs free list could be corrupted, and the type
driver's start routine might run without spl protection.
Submitted by: Tor Egge <Tor.Egge@idt.ntnu.no>
Obtained from: PR kern/2891
automatically have random generation numbers. The kenel way of handling those
also changed. Further it is advised to run fsirand on all your nfs exported
filesystems. the code is mostly copied from OpenBSD, with the randomization
chanegd to use /dev/urandom
Reviewed by: Garrett
Obtained from: OpenBSD
and fixed everything that depended on getting it from the wrong
place. Most of the broken things actually only depended on getting
the declaration of their interrupt handler from "ioconf.h".
supports All Cyrix CPUs, IBM Blue Lightning CPU and NexGen (now AMD)
Nx586 CPU, and initialize special registers of Cyrix CPU and msr of
IBM Blue Lightning CPU.
If revision of Cyrix 6x86 CPU < 2.7, CPU cache is enabled in
write-through mode. This can be disabled by kernel configuration
options.
Reviewed by: Bruce Evans <bde@freebsd.org> and
Jordan K. Hubbard <jkh@freebsd.org>
null casts. `time' is nonvolatile for accesses within a region locked
by splclock()/splx(). Accesses outside such a region are invalid, and
splx() must have the side effect of potentially changing all global
variables (since there are hundreds of sort of volatile variables like
`time'), so declaring `time' as volatile didn't have any real benefits.
form `tv = time'. Use a new function gettime(). The current version
just forces atomicicity without fixing precision or efficiency bugs.
Simplified some related valid accesses by using the central function.
Michael submitted code to activate the audio muxes.
fsmp:
extended those changes for different boards.
auto-detection of board types.
auto-detection of tuner types.
auto-detection of stereo option.
Michael submitted code to activate the audio muxes.
fsmp:
extended those changes for different boards.
auto-detection of board types.
auto-detection of tuner types.
auto-detection of stereo option
processes using AF_LOCAL sockets. This hack is going to be used with
Secure RPC to duplicate a feature of STREAMS which has no real counterpart
in sockets (with STREAMS/TLI, you can apparently use t_getinfo() to learn
UID of a local process on the other side of a transport endpoint).
What happens is this: the client sets up a sendmsg() call with ancillary
data using the SCM_CREDS socket-level control message type. It does not
need to fill in the structure. When the kernel notices the data,
unp_internalize() fills in the cmesgcred structure with the sending
process' credentials (UID, EUID, GID, and ancillary groups). This data
is later delivered to the receiving process. The receiver can then
perform the follwing tests:
- Did the client send ancillary data?
o Yes, proceed.
o No, refuse to authenticate the client.
- The the client send data of type SCM_CREDS?
o Yes, proceed.
o No, refuse to authenticate the client.
- Is the cmsgcred structure the right size?
o Yes, proceed.
o No, signal a possible error.
The receiver can now inspect the credential information and use it to
authenticate the client.
Fixed a bug in fxp_mdi_write - a hex number was missing a preceding 0x
and this was causing the routine to not wait for a PHY write to complete.
Added support for link0, link1, and link2 flags to toggle auto-
negotiation, 10/100, and half/full duplex:
link0 disable auto-negotiation
When set, these flags then have meaning:
-link1 10Mbps
link1 100Mbps
-link2 half duplex
link2 full duplex
...needs a manual page.
modern FreeBSD systems will syslog properly on older systems that
still name the logging socket "/dev/log". This includes pre-2.2
versions of FreeBSD as well as BSD/OS systems. If the connect to
"/var/run/log" fails, the function now tries to connect to
"/dev/log" as a fallback.
of setting it (compiled into vfs_conf.c), but we have a dynamic system
in place. This could probably be better done via a runtime configure
flag in the VFS_SET() VFS declaration, perhaps VFCF_LOCAL, and have the
VFS code propagate this down into MNT_LOCAL at mount time. The other FS's
would need to be updated, havinf UFS and MSDOSFS filesystems without
MNT_LOCAL breaks a few things.. the man page rebuild scans for local
filesystems and currently fails, I suspect that other tools like find
and tar with their "local filesystem only" modes might be affected.
Stick 4 more, twin channel only, instructions behind
.if ( TWIN_CHANNEL)
aic7xxx_asm.c:
Add the -O options which allows the specification of which options
to include in a program listing. This makes it possible to easily
determine the address of any instruction in the program across
different hardware/option configurations. Updated usage() as well.
I broke the cable tuning with my 'TEST_A' code. Remove TEST_A define
till I finish this change for both tuning modes. Note that this
will effectively break the new TVTUNER_SETFREQ/TVTUNER_GETFREQ ioctl()s.
These aren't used by anyone but me yet (attempt to provide full resolution
fine tuning for "fringe" stations) so it should be no problem
written:
1) Full duplex mode is now supported (and works!)
2) The 10Mbps-only PCI Pro/10 should now work (untested, however)
Thanks to Justin Gibbs for providing a PCI bus analyzer trace while the
Intel Windows driver was configuring the board...this made it possible
to figure out the mystery bit that I wasn't setting in the PHY for full
duplex to work.
devtotty(). devtotty() must check its arg carefully since the arg is
supplied as ioctl data. This should fix PR3004.
Renamed devtotty() to snpdevtotty().
enable in SCSISEQ during error recovery to deal with the way the
sequencer leaves selections enabled now. Add code to perform "patching"
during sequencer program download.
Spelling fixes obtained from NetBSD.
New sequencer assembler for the aic7xxx adapters. This assembler
performs some amount of register type checking, allows bit
manipulation of symbolic constants, and generates "patch tables"
for conditionalized downloading of portions of the program.
This makes it easier to take full advantage of the different
features of the aic7xxx cards without imposing run time penalies
or being bound to the small memory footprints of the low end
cards for features like target mode.
aic7xxx.reg:
New, assembler parsed, register definitions fo the aic7xxx cards.
This was done primarily in anticipation of 7810 support which
will have a different register layout, but should be able to use
the same assembler. The kernel aic7xxx driver consumes a generated
file in the compile directory to get the definitions of the register
locations.
aic7xxx.seq:
Convert to the slighly different syntax of the new assembler.
Conditionalize SCB_PAGING, ultra, and twin features which shaves
quite a bit of space once the program is downloaded.
Add code to leave the selection hardware enabled during reconnects
that win bus arbitration. This ensures that we will rearbitrate
as soon as the bus goes free instead of delaying for a bit.
When we expect the bus to go free, perform all of the cleanup
associated with that event "up front" and enter a loop awaiting
bus free. If we see a REQ first, complain, but attempt to
continue. This will hopefully address, or at least help diagnose,
the "target didn't send identify" messages that have been reported.
Spelling corrections obtained from NetBSD.
Restores the use of SBLOCK instead of the BSOFF/sectorsize calculation.
Using SBLOCK is bogus however in that it uses DEV_BSIZE instead of
the actual sector size, but that is taken care of in other places.
Changing the SBLOCK would be better, but it affects the system
in other places, and doing it this way makes it possible to
use filesystems that was made before the lite2 merge.
Added obsolete option GATEWAY so that kern_opt.c gets tested.
Added undocumented options LOCKF_DEBUG and SIMPLELOCK_DEBUG so
that these options get tested. The addition of LOCKF_DEBUG shows
that all of kern/kern_lockf.c shouldn't have been moved from ufs.
The debugging parts are very fs-dependent.
. properly declare the variable in in a .h file, as opposed to
using a private extern declaration in userconfig.c;
. move the definition of EISA_SLOTS and therefore the inclusion of
opt_eisa.h into eisaconf.c.
probing anytime soon, make EISA_SLOTS a fully supported option. It's
required for the HP NetServer LC series machines.
Next stop: make dset(8) aware of it as well.
can't perform overlapping commands on both of its channels.
To enable the CMD640B work-around, the kernel must be compiled with
"options CMD640". Without that option there should be no difference
in the code produced compared to the previous revision of wd.c.
Submitted by: Wolfgang Helbig <helbig@ba-stuttgart.de>
in procfs_allocvp(). This fixes at least stat() of /proc/*/mem.
stat() of /proc/*/file already worked. I think procfs_allocvp() isn't
actually called for type Pfile.
formula uses `& nchash'. This is very broken when nchash is a prime
number instead of 1 less than a power of 2, but the Lite2 formula was
merged in.
Merged some cosmetic changes from Lite2, rev.1.21 and Lite1. The merge
was difficult because the Lite2 code is essentially ours (phk's) except
where Lite2 improved or broke it.
Summary of the Lite2 changes:
- in the copyright, phk's rights have been transferred to the Regents.
This change should be reviewed.
- nchENOENT went away; the "no" vnode is now simply 0.
- comments were improved.
- style was "improved".
- goto instead of Fanatism (sic) was considered bad :-).
- there are some small changes to support whiteouts.
- new cache entries are added in more cases. More work is required
near here to change the hash table size if kern.desiredvnodes is
changed using sysctl.
- rescanning of the hash bucket in cache_purgevfs() was removed. This
change should be reviewed.
effect immediately, but required a following (normally redundant) G0
into GL mapping. This adds one layer of indirection (thus might make it
slower), but fixes the broken box character drawing in pcvt.
Hellmuth and Bruce are unfortunately too busy too review this right now,
but i wanna have it in 2.2 since it has often been asked in the past.
Warning: this won't work yet with PCVT_SCANSET=2 along in early
console mode (boot -c, or boot -d).
A big thanks to Kazutaka, and a word of apologies for delaying the
review for that long time...
Submitted by: yokota@zodiac.mech.utsunomiya-u.ac.jp (Kazutaka YOKOTA)
Many things have been changing in the kernel since mid-1996, so there's
quite some amount of diffs here already. It compiles, but i cannot
test it anywhere here.
2.2 candidate?
Closes PR # 1201.
This is some of the worst code I've had to wade through in
ages and I don't want to have to start from scratch again next time.
(I have a 2.2 version of these comments, can I commit them?)
mount. This may have been a contributor to the 'null v_mount in
fsync()' problem
This is another, perhaps slightly less urgent, 2.2 last-minute candidate.
Reviewed by: sef
(phk's) sysctl framework, and I needed special code to disambiguate
the VFS_GENERIC node from the VFS_VFSCONF leaf, so I only converted
the leaves to the FreeBSD framework. The error handling isn't quite
right. CSRGS's sysctls seem to return ENOTDIR too much and FreeBSD's
sysctls don't agree with the man page.
instead of all hardcoded assumptions historically used
(i.e. sizeof(long) == 4)
Use MAXLOGNAME == 17 for stricter setlogin() size checking. Since
it rounds up to 20, all sizes remains the same
the quality of the hash distribution. This does not fix a problem dealing
with poor distribution when using lots of IP aliases and listening
on the same port on every one of them...some other day perhaps; fixing
that requires significant code changes.
The use of xor was inspired by David S. Miller <davem@jenolan.rutgers.edu>
and getvfsbyname() interfaces. The new interfaces are now hidden from
applications unless _NEW_VFSCONF is defined. The new vfsconf interfaces
don't work yet.
valid signals, else return EINVAL for ioctl VT_SETMODE.
this fixes a problem that anybody with vty access can panic the system.
2.2-Candidate (and 2.1.0 I believe)
Reviewed-by: sos
The sequencer expects untagged transactions to have the SCBID of the
transaction in the "busy target" array. So, ensure that the busy entry
is up to date for the target in this case. The new identify code in the
sequencer that performs additional sanity checking got caught up when a
tagged transaction created an untagged request sense.
In ahc_handle_seqint, ensure that the target ID is taken from the right
place. In the case of a selection, the ID is in SCSIID. In the case of
a reconnection it is found in SELID.
missing-parentheses bug, but this exposed a misplaced vfs_busy_pages().
This bug cost a factor of 2.5-3 in nfsv3 write performance! It should
be fixed in 2.2.
Removed some debugging code that gets triggered often in normal
operation. There are still many backwards diagnostics (#define
DIAGNOSTIC gives no diagnostics).
Submitted by: vfs_busy_pages() fix by dfr
Print the stack pointer together with the frame pointer in the trap,
syscall and interrupt messages. The frame pointer is not very useful
for locating syscall args since syscall functions don't have a frame
pointer.
Print all the numbers in the trap, syscall and interrupt messages in
the default radix. The syscall number was confusing because it was
printed in decimal.
Use %#n format more and 0x%x less. 0x%x of course doesn't work with
a variable radix. ddb is now fairly consistent about using %+#n to
print all numbers. It omits the '+' for signed numbers the '#' in a
few cases (e.g., for function args) to save space.
Fix a bug in the initialization of the busreset_args that left the B channel
args unitialized and the A channel ones initialized to B's vales. Oops.
If we get a NO_IDENT sequencer interrupt (the reconnecting target didn't
issue an identify or botched it), reset the bus instead of panicing. We
should be able to recover from this error.
In the AWAITING_MSG handler, order messages by severity. Since the message
we send is based on a flag on the SCB, it is possible, during error recovery,
to get more than one flag set. This is fine since any time a new flag is
set, it is meant to take us to a more draconian level of recovery. This
also ensures that we don't lose any "history" of what the command has gone
through.
When we reset the bus, reset the "send ordered tag" bitmask.
Clear some additional interrupt status when we perform a bus reset.
time that we really want to do this is when a bus reset causes the sequencer
to be reset and the kernel driver now handles this case.
Remove some reordering in the select2 routine that wasn't necessary.
It was an experimental fix for a race condition I fixed elsewhere, and
confused the code flow.
Don't bother looping on a parity error in the mesgout loop since we can't
see parity errors on out phases.
Clean up the mesgin_identify code. In the old days, we "snooped" for tag
messages and used this as an indicator of whether or not the target was
using tagged transactions. This forced the sequencer to ack the identify
before determining if a valid SCB matched the target meaning that an abort
message to handle this case might not be seen before the target entered a
data phase. Since we can determin the "tagged-ness" of a target by looking
it up in the array of busy targets (recently introduced), we can determine
this up front simplifying the search code as well as ensuring we can follow
the SCSI specs method for rejecting a reselection.
When an SCB is placed on the free list, set its SCB_TAG to SCB_LIST_NULL.
This makes it much easier for the kernel driver to find active SCBs on the
card during error recovery.
cruft and resulted in loading usually following a null pointer. Use
something closer to the pre-Lite2 code, including not making a copy of
the new filesystem's config info. Not making a copy also fixes a race
for loading and a memory leak for unloading.
Fixed unloading of vfs's. maxvfsconf wasn't maintained.
Look up the vfs to unload by name instead of by number. The numbers
should go away as soon as all mount utilities are converted.
- getnewvnode() and vref() were missing one simple_unlock() each.
- the Lite2 locking changes weren't merged at all in
printlockedvnodes() or sysctl_vnode(). Merging these undid
some KNF style regressions.
a race condition in how SDTR and WDTR negotiation are handled, fixes for multi-lun
non-tagged device recovery, and ensuring that the timedout scbs in the waiting queue
are cleaned up.
Fix a problem with SCB paging that caused bogus residuals to be reported.
all of the configurables and instrumentation related to
inter-process communication mechanisms. Some variables,
like mbuf statistics, are instrumented here for the first
time.
For mbuf statistics: also keep track of m_copym() and
m_pullup() failures, and provide for the user's inspection
the compiled-in values of MSIZE, MHLEN, MCLBYTES, and MINCLSIZE.
partly because the #define's for them were moved to a different
file. At least the null VOP_LOCK() no longer works, since vclean()
expects VOP_LOCK( ..., LK_DRAIN | LK_INTERLOCK, ...) to clear the
interlock. This probably only matters when simple_lock() is not
null, i.e., when there are multiple CPUs or SIMPLELOCK_DEBUG is
defined.
connect in TCP while sending urgent data. It is not clear what
purpose is served by doing this, but there's no good reason why it
shouldn't work.
Submitted by: tjevans@raleigh.ibm.com via wpaul
- avoid malloc() if the number of fds is small.
- pack the bits better so that `small' is quite large.
- don't waste time generating zero bits for null fd_set pointers or
scanning these bits.
Possibly improved select():
- free malloc()ed storage before returning. This is simpler and I
think huge select()s aren't worth optimizing since they are rare,
relative gain would be small and there would be tiny costs for all
selects().
Reviewed by: ache (first version by him too)
become impractical to distinguish versions using "real" release dates, so
might as well make it correspond to real version number (-current is
on the 3.0 branch) so at least the feature increments are guaranteed to
be linear.
Silently approved by: current list
execve() clears the P_SUGID process flag in execve() if the binary
executed does not have suid or sgid permission bits set.
This also happens when the effective uid is different from the real
uid or the effective gid is different from the real gid. Under
these circumstances, the process still has set id privileges and
the P_SUGID flag should not be cleared.
Submitted by: Tor Egge <Tor.Egge@idt.ntnu.no>
Cleanup of the disconnected list was broken in the SCB paging case
(confusion of NULLand SCB_LIST_NULL)
Implement a clean mechanism for determining that we have exited the timeout
state and test for this in ahc_done instead of all over the place.
Bring back the use of AAP (Auto Access Pause) I don't think it was the
true cause of the bus hangs people were reporting.
We want to reset the bus if we've been through an Abort action, not if
we are a recovery SCB (one implies the other, but not vice-versa).
pr_usrreqs. Collapse duplicates with udp_usrreq.c and
tcp_usrreq.c (calling the generic routines in uipc_socket2.c and
in_pcb.c). Calling sockaddr()_ or peeraddr() on a detached
socket now traps, rather than harmlessly returning an error; this
should never happen. Allow the raw IP buffer sizes to be
controlled via sysctl.
negotiation messages may be tagged, we were overrunning the old buffer.
The variable that was getting squashed is updated before the message goes
out, causing corrupted SDTR or WDTR messages. Depending on the phases
traversed before message out, this could cause the wrong offset to be
negotiated allowing data overruns to occur. The problem is easier to
detect with wide targets on the chain since the allowed offset is smaller.
Also removed the unnecessary clearing of SPIORDY during the message out
phase. We don't rely on SPIORDY any more.
non-broken chipssets whose ID is 0x84, such as the one found in the NEC
6030H.
> The code relies on the assumption that on a genuine_broken vlsi, you
> don't get 0x84 when probing slot 1 in the normal location. On the versa I
> do get 0x84 when probing slot 1 in the normal location. What you get on
> genuine_broken at the normal slot 1 location is unknown to me;
Submitted by: Chris Timmons <skynyrd@opus.cts.cwu.edu>
Successful lstat()s purged an existing entry as well as not caching the
result.
This bug was introduced in Lite1 by setting the LOCKPARENT flag for
[o]lstat() in order to support the inherit-attributes-from-parent-
directory misfeature for symlinks. LOCKPARENT was previously only set
for CREATEs and DELETEs. It is now set for LOOKUPs, but only for
[o]lstat(), so the problem wasn't very noticeable.
the old VFS_VFSCONF sysctl is enabled by default.
Initialize the vfc_vfsops field to non-NULL in sysctl_ovfs_conf()
so that the old VFS_VFSCONF sysctl actually works. The old (still
current) getvfsent.c uses this "kernel-only" field to decide which
vfs's are configured (the old implementation returned null entries
for unconfigured vfs's).
will increase the overhead of queueing a command, but some recent bug reports
make me believe that AAP isn't really working and that we are losing some
SCBs from the input queue. Hopefully this will cure that problem.
Fix some bugs in the error recovery code. Mainly these could cause us to
inadvertantly forget to untimeout an SCB that was recovered causing later
confusion.
to coredump previously since it (somewhat uniquely) is setuid and forks
without execing, and thus without passing P_SUGID the child could
coredump and possibly divulge sensitive information (such as encrypted
passwords from the passwd database).
at runtime.
etc/make.conf:
Nuked HAVE_FPU option.
lib/msun/Makefile:
Always build the i387 objects. Copy the i387 source files at build
time so that the i387 objects have different names. This is simpler
than renaming the files in the cvs repository or repeating half of
bsd.lib.mk to add explicit rules.
lib/msun/src/*.c:
Renamed all functions that have an i387-specific version by adding
`__generic_' to their names.
lib/msun/src/get_hw_float.c:
New file for getting machdep.hw_float from the kernel.
sys/i386/include/asmacros.h:
Abuse the ENTRY() macro to generate jump vectors and associated code.
This works much like PIC PLT dynamic initialization. The PIC case is
messy. The old i387 entry points are renamed. Renaming is easier
here because the names are given by macro expansions.
in the route. This allows us to remove the unconditional setting of the
pipesize in the route, which should mean that SO_SNDBUF and SO_RCVBUF
should actually work again. While we're at it:
- Convert udp_usrreq from `mondo switch statement from Hell' to new-style.
- Delete old TCP mondo switch statement from Hell, which had previously
been diked out.
is administratively downed, all routes to that interface (including the
interface route itself) which are not static will be deleted. When
it comes back up, and addresses remaining will have their interface routes
re-added. This solves the problem where, for example, an Ethernet interface
is downed by traffic continues to flow by way of ARP entries.
clusters greater than one page in length by calling contigmalloc1().
This uses a helper process `mclalloc' to do the allocation if
the system runs out at interrupt time to avoid calling contigmalloc
at high spl. It is not yet clear to me whether this works.
sb_max * MCLBYTES / (MSIZE + MCLBYTES)
used in sbreserve() to overflow, causing all socket creation attempts
to fail. Force the calculation to use u_quad_t's, which makes overflow
less likely.
"boot.config" (relative to the root directory on the 'a' partition
on the first BSD slice) if it exists. If it doesn't exist, then
the only visible changes should be that the kernel name isn't reset
to "/kernel" after looking it up fails and that the default name
is now "kernel".
The new function readfile() can be used for other things:
- reading help messages.
- reading splash screens.
- reading userconfig info.
Changed it from 4 to 16 for i386's. It can be anything for i386's,
but compiler options limit it to a power of 2, and assembler and
linker deficiencies limit it to a small power of 2 (<= 16).
We use 16 in the kernel to get smaller tables (see Makefile.i386 and
<machine/asmacros.h>). We still use the default of 4 in user mode.
Use HISTCOUNTER instead of (*kcount) in the definition of KCOUNT()
for consistency with other macros.
