emax [Fri, 1 Aug 2008 00:36:43 +0000 (00:36 +0000)]
Implement ratelimiting for debug messages. For now, allow at most
one message per second. In the future might add a sysctl knob for
each socket family to fine tune this.
Enhance pmap_change_attr(). Specifically, avoid 2MB page demotions, cache
mode changes, and cache and TLB invalidation when some or all of the
specified range is already mapped with the specified cache mode.
Parse sysctl settings from /etc/sysctl.conf.local after /etc/sysctl.conf
if it exists. This mirrors similar behavior for /boot/loader.conf and
/etc/rc.conf.
In mac_bsdextended's auditctl and acct policy access control checks,
return success if the passed vnode pointer is NULL (rather than
panicking). This can occur if either audit or accounting are
disabled while the policy is running.
Since the swapoff control has no real relevance to this policy,
which is concerned about intent to write rather than water under the
bridge, remove it.
PR: kern/126100
Reported by: Alan Amesbury <amesbury at umn dot edu>
MFC after: 3 days
Add thr_pread_{int,long,ptr} and thr_pwrite_{int,long,ptr} to
help abstract the sizes and endianness of the primary types of
the target. These currently use the native characteristics.
das [Thu, 31 Jul 2008 19:57:50 +0000 (19:57 +0000)]
As in other parts of libm, mark a few constants as volatile to prevent
spurious optimizations. gcc doesn't support FENV_ACCESS, so when it
folds constants, it assumes that the rounding mode is always the
default and floating point exceptions never matter.
Currently, BSM audit pathname token generation for chrooted or jailed
processes are not producing absolute pathname tokens. It is required
that audited pathnames are generated relative to the global root mount
point. This modification changes our implementation of audit_canon_path(9)
and introduces a new function: vn_fullpath_global(9) which performs a
vnode -> pathname translation relative to the global mount point based
on the contents of the name cache. Much like vn_fullpath,
vn_fullpath_global is a wrapper function which called vn_fullpath1.
Further, the string parsing routines have been converted to use the
sbuf(9) framework. This change also removes the conditional acquisition
of Giant, since the vn_fullpath1 method will not dip into file system
dependent code.
The vnode locking was modified to use vhold()/vdrop() instead the vref()
and vrele(). This will modify the hold count instead of modifying the
user count. This makes more sense since it's the kernel that requires
the reference to the vnode. This also makes sure that the vnode does not
get recycled we hold the reference to it. [1]
Merge of the source for igb and em into dev/e1000, this
proved to be necessary to make the static drivers work
in EITHER/OR or BOTH configurations. Modules will still
build in sys/modules/igb or em as before.
This also updates the igb driver for support for the 82576
adapter, adds shared code fixes, and etc....
ed [Wed, 30 Jul 2008 21:18:38 +0000 (21:18 +0000)]
Add POSIX -p flag to make(1).
This article [1] describes the -p flag for make(1):
Write to standard output the complete set of macro definitions and
target descriptions. The output format is unspecified.
We already support a similar flag (-d g1), but unlike -p, it still
executes commands. Our implementation just turns it into -d g1, but also
sets flag `printGraphOnly', which will cause make(1) to skip execution.
Trim some noise from some #ifdef's. This had leaked into the compat32
support for bpf(4) due to hacks in the Y! tree for a truss32 binary
(since superseded by native support for 32-bit binaries in truss itself).
The original adduser/rmuser scripts in Perl used to modify the PATH
setting. When the scripts were converted to Bourne shell, this was
removed. The adduser script was changed to use an explicit path for
the pw(8) command so that /usr/sbin did not have to be in the user's
PATH. The rmuser script continued to assume that /usr/sbin was in the
user's path, however. This fixes the rmuser script to use an explicit
path for pw(8) similar to adduser.
The behaviour of the lockmgr going back at least to the 4.4BSD-Lite2 was
to downgrade the exclusive lock to shared one when exclusive lock owner
requested shared lock. New lockmgr panics instead.
The vnode_pager_lock function requests shared lock on the vnode backing
the OBJT_VNODE, and can be called when the current thread already holds
an exlcusive lock on the vnode. For instance, it happens when handling
page fault from the VOP_WRITE() uiomove that writes to the file, with
the faulted in page fetched from the vm object backed by the same file.
We then get the situation described above.
Verify whether the vnode is already exclusively locked by the curthread
and request recursed exclusive vnode lock instead of shared, if true.
Set all of the "optimum performance" PHY registers for the 15D parts as
well as the 15C since it seems to be required in practice. The Linux
natsemi.c driver mostly does this as well.
PR: kern/112179
Submitted by: Mark Willson mark - hydrus org uk
MFC after: 1 week
des [Wed, 30 Jul 2008 15:37:13 +0000 (15:37 +0000)]
According to a proposed Norwegian standard for alphabetization of which
I've obtained a draft, <u:> is indeed equivalent to u (to my surprise),
and <th> sorts immediately after z.
The correct ordering is algorithmic (based on the EOR) and can not be
accurately represented as a table.
ed [Wed, 30 Jul 2008 12:39:18 +0000 (12:39 +0000)]
Remove the use of lbolt from the VFS syncer.
It seems we only use `lbolt' inside the VFS syncer and the TTY layer
now. Because I'm planning to replace the TTY layer next month, there's
no reason to keep `lbolt' if it's only used in a single thread inside
the kernel.
Because the syncer code wanted to wake up the syncer thread before the
timeout, it called sleepq_remove(). Because we now just use a condvar(9)
with a timeout value of `hz', we can wake it up using cv_broadcast()
without waking up any unrelated threads.
ed [Wed, 30 Jul 2008 12:32:42 +0000 (12:32 +0000)]
Don't make subr_clist.c depend on the TTY layer.
After the import of the new TTY layer, the TTY_QUOTE definition will not
be present anymore. To make sure clists will still work as expected,
introduce an internal definition called QUOTEMASK.
Maybe we can decide to remove the quote bits entirely, but we still have
to look into this. There may be drivers that still use the quote bits.
Update routed to use the RFC 3678 protocol-independent multicast API. Use
IP_MULTICAST_IF with struct ip_mreqn (obtained from Linux) to tell the
stack which interface index to use for sending IPv4 datagrams.
Bring back the save/restore of the %ds, %es, %fs and %gs registers for
the 32bit images on amd64.
Change the semantic of the PCB_32BIT pcb flag to request the context
switch code to operate on the segment registers. Its previous meaning
of saving or restoring the %gs base offset is assigned to the new
PCB_GS32BIT flag.
FreeBSD 32bit image activator sets the PCB_32BIT flag, while Linux 32bit
emulation sets PCB_32BIT | PCB_GS32BIT.
Adopt the slightly weaker consistency locking approach used in IPv4 raw
sockets for IPv6 raw sockets: separately lock the inpcb for determining
the destination address for a connect()'d raw socket at the rip6_send()
layer, and then re-acquire the inpcb lock in the rip6_output() layer to
query other options on the socket. Previously, the global raw IP socket
lock was used, which while correct and marginally more consistent, could
add significantly to global raw IP socket lock contention.
In particular, this fixes the oddity that -dumpl would apply
umask to copied dirs (which are created in the target tree)
but not to "copied" files (which are only linked). After
this change:
$ ls -ld a a/b a/b/c
d--x-w-r-- 3 tim tim 512 Jul 29 20:08 a
drwxr----x 3 tim tim 512 Jul 29 20:09 a/b
dr----x-w- 2 tim tim 512 Jul 29 20:09 a/b/c
$ (echo a; echo a/b; echo a/b/c) | cpio -dumpl o
$ cd o
$ ls -ld a a/b a/b/c
d--x-w-r-- 3 tim tim 512 Jul 29 20:08 a
drwxr----x 3 tim tim 512 Jul 29 20:09 a/b
dr----x-w- 2 tim tim 512 Jul 29 20:09 a/b/c
When copying in and out current ICMPv6 filters on a raw IPv6 socket,
lock the inpcb and use a local stack variable to copy to/from userspace
so that sooptcopyin()/sooptcopyout() aren't called while holding an
rwlock.
While here, fix a bug in which a failed sooptcopyin() might lead to
partially consistent ICMPv6 filters on the socket by not ignoring the
error returned by sooptcopyin().
Add a simple ICMPv6 filter test for IPv6 raw sockets: determine that
the default ICMPv6 filter is pass all, test that we can set it to block
all and restore to pass all. No attempt is made to test that the
filtering works, just that we can get and set it.
ed [Tue, 29 Jul 2008 16:29:59 +0000 (16:29 +0000)]
Convert popen()'s `pidlist' to a SLIST, for consistency.
I guess the original author of the popen() code didn't want to use our
<sys/queue.h> macro's, because the single linked list macro's didn't
offer O(1) deletion. Because I introduced SLIST_REMOVE_NEXT() some time
ago, we can now use the macro's here.
By converting the code to an SLIST, it is more consistent with other
parts of the C library and the operating system.
Reviewed by: csjp
Approved by: philip (mentor, implicit)
des [Tue, 29 Jul 2008 11:32:42 +0000 (11:32 +0000)]
In the previous commit, no_NO should have been replaced with nb_NO in the
LOCALES list. Since no_NO was still in LOCALES, make tried to build the
corresponding .out files, but couldn't since the .src files were gone. I
did not notice this because I still had the old .out files in my .OBJDIR.
Thanks to kib@ for the heads-up.
Marginally decomplicate set/getsockopt code in ip6_output.c by simply
using the passed arguments explicitly and unconditionally rather than
testing them and calling panic(). The result is the same but easier
to read.
- Out with some printfs.
- Fix a initialization of last_tsn_used
- Fix handling of mapped IPv4 addresses
Obtained from: Michael Tuexen and I :-)
MFC after: 1 week
s/printf/device_printf/g
Don't hard code function name in device_printf() and use __func__.
While I'm here nuke bfe_unit in softc as it's not needed anymore.
Don't use memcpy() to copy several bytes.
Store IDs is host order. It is not so important to bloat code for it.
Combine m_adj() and M_PREPEND() into single M_PREPEND().
des [Mon, 28 Jul 2008 21:33:34 +0000 (21:33 +0000)]
Add collation sequence for no_NO. The same sequence applies to nb_NO
and nn_NO, which are symlinked to no_NO.
The patch in the PR contained a number of errors apparently based on
(sometimes incorrect) pronunciation; for instance, v and w are
distinct letters and should be collated in that order, even if they
are pronounced the same, while <u:> should be collated with u, even
though it is often mispronounced as y. For lack of a solid reference,
I have taken sv_SE and simply changed the last three letters of the
alphabet.
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