Commit Graph

137284 Commits

Author SHA1 Message Date
Stefan Farfeleder
55d2c5b573 Split updatepwd() into two smaller functions. The first one, findpwd(),
computes the new path and the second one, updatepwd(), updates the variables
PWD, OLDPWD and the path used for the pwd builtin according to the new
directory.  For a logical directory change, chdir() is now called between
those two functions, no longer causing wrong values to be stored in PWD etc. if
it fails.

PR:	64990, 101316, 120571
2008-02-24 16:50:55 +00:00
Attilio Rao
628f51d275 Introduce some functions in the vnode locks namespace and in the ffs
namespace in order to handle lockmgr fields in a controlled way instead
than spreading all around bogus stubs:
- VN_LOCK_AREC() allows lock recursion for a specified vnode
- VN_LOCK_ASHARE() allows lock sharing for a specified vnode

In FFS land:
- BUF_AREC() allows lock recursion for a specified buffer lock
- BUF_NOREC() disallows recursion for a specified buffer lock

Side note: union_subr.c::unionfs_node_update() is the only other function
directly handling lockmgr fields. As this is not simple to fix, it has
been left behind as "sole" exception.
2008-02-24 16:38:58 +00:00
Attilio Rao
93b651d88c Currently, smb_co_init() uses the same lock name for the mutex interlock
and the lockmgr. Use different names in order to avoid WITNESS conflicts.

Reported by:	Bryan Venteicher <bryanv at daemoninthecloset dot org>
2008-02-24 16:26:52 +00:00
Paolo Pisati
f94a7fc0b5 Add table/tablearg support to ipfw's nat.
MFC After: 1 week
2008-02-24 15:37:45 +00:00
Shunsuke Akiyama
54462c2410 o Add module event handler.
Now ucom kernel module can unload properly.
o Update copyright year.

PR:		usb/88966
MFC after:	1 week
2008-02-24 12:16:01 +00:00
Alexander Motin
510b772284 Fix shutdown bug made by previous commit. 2008-02-24 10:13:32 +00:00
Kip Macy
88e8506e22 Fix namespace collision with sparc macro 2008-02-24 07:19:31 +00:00
Mike Silbersack
ea346b19cc Change FreeBSD 7 so that it returns TCP options in
the same order that FreeBSD 6 and before did.  Doug
White and the other bloodhounds at ISC discovered that
while FreeBSD 7's ordering of options was more efficient,
it caused some cable modem routers to ignore the
SYN-ACKs ordered in this fashion.

The placement of sackOK after the timestamp option seems
to be the critical difference:

FreeBSD 6:
<mss 1460,nop,wscale 1,nop,nop,timestamp 3512155768 0,sackOK,eol>

FreeBSD 7.0:
<mss 1460,nop,wscale 3,sackOK,timestamp 1370692577 0>

FreeBSD 7.0 + this change:
<mss 1460,nop,wscale 3,nop,nop,timestamp 7371813 0,sackOK,eol>

MFC after: 1 week
2008-02-24 05:13:20 +00:00
Marcel Moolenaar
cebb2edba8 Resolve warnings exposed by LINT.
o  Put prototypes in a single header only.
o  Fix printf format specifiers.
2008-02-24 03:01:26 +00:00
Colin Percival
491869163b After finishing sending file data in sendfile(2), don't forget to send
the provided trailers.  This has been broken since revision 1.240.

Submitted by:	Dan Nelson
PR:		kern/120948
"sounds ok to me" from:	phk
MFC after:	3 days
2008-02-24 00:07:00 +00:00
Warner Losh
acebb585f7 The matching in -lname and -ilname are on the contents of the link
itself, not on the type of the file.  As such, do a readlink to get
the symbolic link's contents and fail to match if the path isn't a
symbolic link.

Pointed out by: des@
2008-02-24 00:01:06 +00:00
Marcel Moolenaar
c2602b5b06 Add prototype for __cmpd2(). 2008-02-23 22:40:05 +00:00
Marcel Moolenaar
eb9b8516f2 Add FPU_EMU. 2008-02-23 22:32:16 +00:00
Kip Macy
7c84f79070 remove call to kdb_backtrace() 2008-02-23 21:18:13 +00:00
Marcel Moolenaar
4bbf0886b3 Hook-up the FPU emulator. It's optional upon FPU_EMU. 2008-02-23 20:16:38 +00:00
Marcel Moolenaar
f7355c360b Bring back (without advertising clause) cmpdi2.c. It's needed on PowerPC
when the FP emulator is compiled-in.
2008-02-23 20:10:49 +00:00
Marcel Moolenaar
7e76048a69 Add a floating-point emulator so that a single userland or single ABI
can run on processors that don't have a FPU. This is typically the
case for Book E processors. While a tuned system will probably want
to use soft-float (or use a processor that has a FPU if the usage is
FP intensive enough), allowing hard-float on FPU-less systems gives
great portability and flexibility.

Obtained from: NetBSD
2008-02-23 20:05:26 +00:00
Marcel Moolenaar
859baed9a9 o Build and install the U-Boot loader as ubldr.
o  Don't build/install the manual pages or configuration
   files that are already installed by the OFW loader.
o  Hook the U-Boot loader to the build.
2008-02-23 19:45:20 +00:00
Marcel Moolenaar
8b4c4c1c72 style(9) commit. 2008-02-23 19:43:29 +00:00
Ruslan Ermilov
6d3d8d0eca Bump the default .Os version to FreeBSD 8.0. 2008-02-23 19:27:54 +00:00
Marcel Moolenaar
3802c8b6da Setup the new bootinfo structure.
While here, make local function static and update copyright.
2008-02-23 19:08:25 +00:00
Marcel Moolenaar
0f5615e325 o Keep running on U-Boot's stack.
o  Disable interrupts while not running U-Boot code. We clobber
   registers that the U-Boot interrupt handlers assume to be
   fixed as per the U-Boot register usage. At this time this only
   applies to r14. U-Boot uses r2 now for what they used r29 for.
   After we restore r14 in preparation of doing the syscall, we
   re-enable interrupts. When we return from the syscall, we
   disable interrupts and restore the callee-saved r14.
2008-02-23 18:42:53 +00:00
Marcel Moolenaar
f673ad04f5 The NFS file system support is conditional upon LOADER_NFS_SUPPORT,
not LOADER_NET_SUPPORT.
2008-02-23 18:36:13 +00:00
Marcel Moolenaar
e641a443f4 Add __elfN(relocation_offset). It holds the offset between the virtual
(link) address and the physical (load) address. Ideally, the mapping
between link and load addresses should be abstracted by the copyin(),
copyout() and readin() functions, so that we don't have to add kluges
in __elfN(loadimage)(). Then, we could also have paged virtual memory
for the kernel. This can be important under EFI, where you need to
allocate physical memory form the firmware if you want to work in all
scenarios.
2008-02-23 18:33:50 +00:00
Marcel Moolenaar
e1233a8bb7 Define the bootinfo structure for FreeBSD. It is not used on
AIM, but it's used for BookE.
2008-02-23 18:01:45 +00:00
Marcel Moolenaar
b8c02f17ea o Include glue.h
o  Support multiple memory regions.
2008-02-23 17:58:12 +00:00
Marcel Moolenaar
9dbb1b6e7d o Build libuboot with -msoft-float like everything else.
o  Move the API prototypes to a separate header (glue.h)
o  Allow the platform to hint libuboot about where to look
   for the API signature. The uboot_address variable is
   expected to be defined by the platform.
2008-02-23 17:56:17 +00:00
Marcel Moolenaar
719ea9c174 Add the appropriate license information. This file is double
licensed under GPL and BSD.

Thanks to: raj@
2008-02-23 17:52:30 +00:00
Marcel Moolenaar
9a1b62b630 We build ficl and libofw with -msoft-float. Build the loader
with -msoft-float too.
2008-02-23 17:48:23 +00:00
Warner Losh
46b993ff99 Implement a number of primaries present in GNU find, but not present
in our find.

The following are nops because they aren't relevant to our find:
	-ignore_readdir_race
	-noignore_readdir_race
	-noleaf
The following aliaes were created:
	-gid -> -group		[2]
	-uid -> -user		[2]
	-wholename -> -path
	-iwholename -> ipath
	-mount -> -xdev
	-d -> -depth		[1]
The following new primaries were created:
	-lname	like -name, but matches symbolic links only)
	-ilname like -lname but case insensitive
	-quit	exit(0)
	-samefile returns true for hard links to the specified file
	-true	Always true
I changed one primary to match GNU find since I think our use of it violates
POLA
	-false	Always false (was an alias for -not!)

Also, document the '+' modifier for -execdir, as well as all of the above.
This was previously implemented.

Document the remaining 7 primaries that are in GNU find, but aren't yet
implemented in find(1)

[1] This was done in GNU find for compatibility with FreeBSD, yet they
mixed up command line args and primary args.

[2] -uid/-gid in GNU find ONLY takes a numeric arg, but that arg does the
normal range thing that.  GNU find -user and -uid also take a numberic arg,
but don't do the range processing.  find(1) does both for -user and -group,
so making -uid and -gid aliases is compatible for all non-error cases used
in GNU find.  While not perfect emulation, this seems a reasonable thing
for us.
2008-02-23 16:29:04 +00:00
Christian Brueffer
8f74c2663b Fix typo. 2008-02-23 14:34:52 +00:00
Bruce Evans
60a50c2585 Optimize the 9pi/2 < |x| <= 2**19pi/2 case some more by avoiding an
fabs(), a conditional branch, and sign adjustments of 3 variables for
x < 0 when the branch is taken.  In double precision, even when the
branch is perfectly predicted, this saves about 10 cycles or 10% on
amd64 (A64) and i386 (A64) for the negative half of the range, but
makes little difference for the positive half of the range.  In float
precision, it also saves about 4 cycles for the positive half of the
range on i386, and many more cycles in both halves on amd64 (28 in the
negative half and 11 in the positive half for tanf), but the amd64
times for float precision are anomalously slow so the larger
improvement is only a side effect.

Previous commits arranged for the x < 0 case to be handled simply:
- one part of the rounding method uses the magic number 0x1.8p52
  instead of the usual 0x1.0p52.  The latter is required for large |x|,
  but it doesn't work for negative x and we don't need it for large |x|.
- another part of the rounding method no longer needs to add `half'.
  It would have needed to add -half for negative x.
- removing the "quick check no cancellation" in the double precision
  case removed the need to take the absolute value of the quadrant
  number.

Add my noncopyright in e_rem_pio2.c
2008-02-23 12:53:21 +00:00
Kip Macy
ce86be8a6a Fix tinderbox by removing call to kdb_backtrace
MFC after: 3 days
2008-02-23 06:19:16 +00:00
Sean Farley
bc991a6d5f Add the groupmod '-d' option to pw to allow the deletion of existing users
from a group without the need to perform the same operation by replacing
the existing list via the '-M' option.  The '-M' option requires someone
to fetch the existing members with pw, deleting the undesired members from
the list and sending the altered list back to pw.

Approved by:	wes (mentor)
MFC after:	5 days
2008-02-23 01:25:22 +00:00
Sean Farley
72d1b828b3 style(9) (verified no object changes)
Approved by:	wes (mentor)
MFC after:	5 days
2008-02-23 01:17:42 +00:00
Kip Macy
8e10660f12 - update firmware to 5.0
- add support for T3C
- add DDP support (zero-copy receive)
- fix TOE transmit of large requests
- fix shutdown so that sockets don't remain in CLOSING state indefinitely
- register listeners when an interface is brought up after tom is loaded
- fix setting of multicast filter
- enable link at device attach
- exit tick handler if shutdown is in progress
- add helper for logging TCB
- add sysctls for dumping transmit queues

- note that TOE wxill not be MFC'd until after 7.0 has been finalized

MFC after: 3 days
2008-02-23 01:06:17 +00:00
Dag-Erling Smørgrav
60e15db992 This patch adds a new ktrace(2) record type, KTR_STRUCT, whose payload
consists of the null-terminated name and the contents of any structure
you wish to record.  A new ktrstruct() function constructs and emits a
KTR_STRUCT record.  It is accompanied by convenience macros for struct
stat and struct sockaddr.

In kdump(1), KTR_STRUCT records are handled by a dispatcher function
that runs stringent sanity checks on its contents before handing it
over to individual decoding funtions for each type of structure.
Currently supported structures are struct stat and struct sockaddr for
the AF_INET, AF_INET6 and AF_UNIX families; support for AF_APPLETALK
and AF_IPX is present but disabled, as I am unable to test it properly.

Since 's' was already taken, the letter 't' is used by ktrace(1) to
enable KTR_STRUCT trace points, and in kdump(1) to enable their
decoding.

Derived from patches by Andrew Li <andrew2.li@citi.com>.

PR:		kern/117836
MFC after:	3 weeks
2008-02-23 01:01:49 +00:00
Bruce M Simpson
e75f77ece7 ip6(4) man page lacks documentation for TCLASS option.
PR:		docs/120945
Reviewed by:	remko
2008-02-22 21:02:36 +00:00
Bruce Evans
dbf10e45c4 Avoid using FP-to-integer conversion for !(amd64 || i386) too. Use the
FP-to-FP method to round to an integer on all arches, and convert this
to an int using FP-to-integer conversion iff irint() is not available.
This is cleaner and works well on at least ia64, where it saves 20-30
cycles or about 10% on average for 9Pi/4 < |x| <= 32pi/2 (should be
similar up to 2**19pi/2, but I only tested the smaller range).

After the previous commit to e_rem_pio2.c removed the "quick check no
cancellation" non-optimization, the result of the FP-to-integer
conversion is not needed so early, so using irint() became a much
smaller optimization than when it was committed.

An earlier commit message said that cos, cosf, sin and sinf were equally
fast on amd64 and i386 except for cos and sin on i386.  Actually, cos
and sin on amd64 are equally fast to cosf and sinf on i386 (~88 cycles),
while cosf and sinf on amd64 are not quite equally slow to cos and sin
on i386 (average 115 cycles with more variance).
2008-02-22 18:43:23 +00:00
Bruce Evans
7c1b5e7953 Remove the "quick check no cancellation" optimization for
9pi/2 < |x| < 32pi/2 since it is only a small or negative optimation
and it gets in the way of further optimizations.  It did one more
branch to avoid some integer operations and to use a different
dependency on previous results.  The branches are fairly predictable
so they are usually not a problem, so whether this is a good
optimization depends mainly on the timing for the previous results,
which is very machine-dependent.  On amd64 (A64), this "optimization"
is a pessimization of about 1 cycle or 1%; on ia64, it is an
optimization of about 2 cycles or 1%; on i386 (A64), it is an
optimization of about 5 cycles or 4%; on i386 (Celeron P2) it is an
optimization of about 4 cycles or 3% for cos but a pessimization of
about 5 cycles for sin and 1 cycle for tan.  I think the new i386
(A64) slowness is due to an pipeline stall due to an avoidable
load-store mismatch (so the old timing was better), and the i386
(Celeron) variance is due to its branch predictor not being too good.
2008-02-22 17:26:24 +00:00
Bruce Evans
43590b1517 Optimize the 9pi/2 < |x| <= 2**19pi/2 case on amd64 and i386 by avoiding
the the double to int conversion operation which is very slow on these
arches.  Assume that the current rounding mode is the default of
round-to-nearest and use rounding operations in this mode instead of
faking this mode using the round-towards-zero mode for conversion to
int.  Round the double to an integer as a double first and as an int
second since the double result is needed much earler.

Double rounding isn't a problem since we only need a rough approximation.
We didn't support other current rounding modes and produce much larger
errors than before if called in a non-default mode.

This saves an average about 10 cycles on amd64 (A64) and about 25 on
i386 (A64) for x in the above range.  In some cases the saving is over
25%.  Most cases with |x| < 1000pi now take about 88 cycles for cos
and sin (with certain CFLAGS, etc.), except on i386 where cos and sin
(but not cosf and sinf) are much slower at 111 and 121 cycles respectivly
due to the compiler only optimizing well for float precision.  A64
hardware cos and sin are slower at 105 cycles on i386 and 110 cycles
on amd64.
2008-02-22 15:55:14 +00:00
Randall Stewart
7a846e9ad8 Fixes a memory leak when VRF's are in play.
Submitted by:	Prasad Narasimha (snprasad@cisco.com)
Reviewed by:	rrs
2008-02-22 15:08:10 +00:00
Randall Stewart
69d5ee4f23 - Takes out stray ifdef code that should not have been present. 2008-02-22 15:06:25 +00:00
Bruce Evans
0ddfa46b44 Add an irint() function in inline asm for amd64 and i386. irint() is
the same as lrint() except it returns int instead of long.  Though the
extern lrint() is fairly fast on these arches, it still takes about
12 cycles longer than the inline version, and 12 cycles is a lot in
applications where [li]rint() is used to avoid slow conversions that
are only a couple of times slower.

This is only for internal use.  The libm versions of *rint*() should
also be inline, but that would take would take more header engineering.
Implementing irint() instead of lrint() also avoids a conflict with
the extern declaration of the latter.
2008-02-22 14:11:03 +00:00
Bruce Evans
f839bac29c Optimize the conversion to bits a little (by about 11 cycles or 16%
on i386 (A64), 5 cycles on amd64 (A64), and 3 cycles on ia64).  gcc
tends to generate very bad code for accessing floating point values
as bits except when the integer accesses have the same width as the
floating point values, and direct accesses to bit-fields (as is common
only for long double precision) always gives such accesses.  Use the
expsign access method, which is good for 80-bit long doubles and
hopefully no worse for 128-bit long doubles.  Now the generated code
is less bad.  There is still unnecessary copying of the arg on amd64
and i386 and mysterious extra slowness on amd64.
2008-02-22 11:59:05 +00:00
Konstantin Belousov
cbd2c621f8 Sanitize arguments to linux_mremap().
Check that only MREMAP_FIXED and MREMAP_MAYMOVE flags are specified.
Check for the page alignment of the addr argument.

Submitted by:	rdivacky
MFC after:	1 week
2008-02-22 11:47:56 +00:00
Ruslan Ermilov
ce04f76c56 Fix essential bugs and warnings. 2008-02-22 10:28:03 +00:00
Bruce Evans
a7aa8cc980 Optimize the fixup for +-0 by using better classification for this case
and by using a table lookup to avoid a branch when this case occurs.
On i386, this saves 1-4 cycles out of about 64 for non-large args.
2008-02-22 10:04:53 +00:00
Ruslan Ermilov
da9b9cd9dc Hide BSD ar(1) under the MK_TOOLCHAIN option.
Reviewed by:	obrien
2008-02-22 09:31:23 +00:00
Bruce Evans
33843eef65 Fix rintl() on signaling NaNs and unsupported formats. 2008-02-22 09:21:14 +00:00