If the last page of the file is partially full and whole valid
portion is invalidated, invalidate the whole page. Otherwise,
partially valid page appears on a page queue, which is wrong. This
could only happen for the last page, because only then buffer which
triggered invalidation could not cover the whole page.
Reported and tested by: pho (previous version)
Reviewed by: alc
Sponsored by: The FreeBSD Foundation
Approved by: re (delphij)
MFC after: 2 weeks
add support for writing the pid of the daemon program to a pid file so
that daemon can be used w/ rc.subr and ports can use the additional
functionality, such as keeping the ldap daemon up and running, and have
the proper program to signal to exit..
PR: bin/181341
Submitted by: feld
Approved by: re (glebius)
When opening or closing fifo, ensure that the vnode is locked
exclusively. Filesystems are assumed to disable shared locking for
the fifo vnode locks, but some do not.
Reported and tested by: olgeni
Discussed with: avg
Sponsored by: The FreeBSD Foundation
MFC after: 1 week
Approved by: re (glebius)
Reduce the scope of the proctree_lock. If several processes cause
continuous calls to the uprintf(9), the proctree_lock could be
shared-locked for indefinite amount of time, starving exclusive
requests. Since proctree_lock is needed for fork() and exit(), this
effectively stops the machine.
While there, do the similar reduction for tprintf(9).
Reported and tested by: pho
Reviewed by: ed
Sponsored by: The FreeBSD Foundation
MFC after: 1 week
Approved by: re (glebius)
Change VM object lock assertion to match locking higher in the call
chain. This repairs a panic observed during pageout on some 64-bit
PowerPC systems.
ken [Thu, 12 Sep 2013 22:06:12 +0000 (22:06 +0000)]
Fix an issue that caused Integrated RAID volumes on LSI mps(4) controllers
to not get scanned on boot.
The problem originated in change 253549. With the change to the mps(4)
driver to scan only targets that it knows it has (as opposed to scanning
the entire bus), scanning RAID volumes on boot was omitted.
So, for versions of FreeBSD that have the scanning changes
(__FreeBSD_version 1000039 and higher), scan RAID volumes that are added
whether or not we're booting.
PR: kern/181784
Reported by: Xiguang Wang <kurapica@gmail.com>
Tested by: Dennis Glatting <dg@pki2.com>
Sponsored by: Spectra Logic
Approved by: re (delphij)
MFC After: 3 days
dim [Thu, 12 Sep 2013 21:24:59 +0000 (21:24 +0000)]
After r255321, clang uses libc++ by default. This leads to a lot of
errors when you enable WITH_GNUCXX to build libstdc++, since it will
include C++ headers from the libc++ installation under ${WORLDTMP}, and
those are not compatible with libstdc++ at all.
To fix this, add -stdlib=libstdc++ to CXXFLAGS when building libstdc++
(and its companion libsupc++) with clang.
- Document the UQUAD sysctl variants.
- Clarify that exactly one of the "access" flags is required and
list the optional flags in a separate list. Prefer bundling
CTLFLAG_TUN into the access flag by not documenting it as an
optional flag to set.
Fix an off-by-one error when populating mincore(2) entries for
skipped entries. lastvecindex references the last valid byte,
so the new bytes should come after it.
Document several recent changes to vm_map_find(9):
- Document the max_addr parameter that restricts mappings to a subset of
the map's address space.
- Document VMFS_ALIGNED_SPACE and update for the rename of VMFS_SUPER_SPACE.
In addition, use a table that describes the different find space
strategies in more detail.
- Decode the idtype argument passed to wait6() in kdump and truss.
- Don't treat an options argument of 0 to wait4() as an error in
kdump.
- Decode the wait options passed to wait4() and wait6() in truss
and decode the returned rusage and exit status.
Don't issue USB resume signalling in USB device mode, if the USB power
mode is ON and suspend is detected. This confuses iPads running in USB
host mode at least.
hiren [Thu, 12 Sep 2013 02:31:32 +0000 (02:31 +0000)]
We are exceeding default limit (256) of bracket nesting and clang does not like
it. We should probably fix the code but appeasing clang with this fix for now.
gcc does not have such limit.
Reviewed by: jmg
Approved by: re (hrs), sbruno (mentor, implicit)
A HEAD buildworld on 9.x first bootstraps bmake, but this failed when
building with standalone debug. Pass in the PROGNAME override to the
'make all' stage as well as 'make install' so that the .debug file is
created with the correct name.
Reviewed by: sjg
Sponsored by: The FreeBSD Foundation
Approved by: re (rodrigc)
Prior to r254304, we only began scanning the active page queue when the
amount of free memory was close to the point at which we would begin
reclaiming pages. Now, we continuously scan the active page queue,
regardless of the amount of free memory. Consequently, we are continuously
calling pmap_ts_referenced() on active pages.
Prior to this change, pmap_ts_referenced() would always demote superpage
mappings in order to obtain finer-grained reference information. This made
sense because we were coming under memory pressure and would soon have to
begin reclaiming pages. Now, however, with continuous scanning of the
active page queue, these demotions are taking a toll on performance. To
address this problem, I have replaced the demotion with a heuristic for
periodically clearing the reference flag on superpage mappings.
Clean up SIOCSIFDSTADDR usage from ifnet drivers. The ioctl itself is
extremely outdated, and I doubt that it was ever used for ifnet drivers.
It was used for AF_INET sockets in pre-FreeBSD time.
Fix a limitation in bhyve that would limit the number of virtual machines to
the maximum number of VT-d domains (256 on a Sandybridge). We now allocate a
VT-d domain for a guest only if the administrator has explicitly configured
one or more PCI passthru device(s).
If there are no PCI passthru devices configured (the common case) then the
number of virtual machines is no longer limited by the maximum number of
VT-d domains.
des [Tue, 10 Sep 2013 22:30:22 +0000 (22:30 +0000)]
Change the default value of VerifyHostKeyDNS to "yes" if compiled with
LDNS. With that setting, OpenSSH will silently accept host keys that
match verified SSHFP records. If an SSHFP record exists but could not
be verified, OpenSSH will print a message and prompt the user as usual.
des [Tue, 10 Sep 2013 22:26:11 +0000 (22:26 +0000)]
Clean up the OpenSSH build. It is now possible to build most components
as static binaries, if desired. The one exception is sshd, which runs
into trouble due to libpam.a's includion of pam_ssh.
Make OpenSSH use LDNS if available. This allows it to verify signed
SSHFP records.
There are two different versions of the ARM ABI depending on the
TARGET_ARCH. As these are sligntly different a package built for
one may not work on another. We need to detect which one we are on
by parsing the .ARM.attributes section.
This will only work on the ARM EABI as this section is part of the
ABI definition. As armv6 only supports the ARM EABI this is not a
problem for the oabi.
Older versions of libelf in FreeBSD fail to read the
.ARM.attributes section needed. As armv6 is unsupported on these
versions we can assume we are running on arm.
Submitted by: andrew
Approved by: re (delphij)
Obtained from: pkgng git
des [Tue, 10 Sep 2013 18:40:43 +0000 (18:40 +0000)]
Clean up the Kerberos build by turning libheimipcc and libheimipcs into
private shared libraries, instead of hacked-together archives of PIC
objects. This makes it possible to build a static libkrb5 that works.
des [Tue, 10 Sep 2013 10:05:59 +0000 (10:05 +0000)]
Fix the length calculation for the final block of a sendfile(2)
transmission which could be tricked into rounding up to the nearest
page size, leaking up to a page of kernel memory. [13:11]
In IPv6 and NetATM, stop SIOCSIFADDR, SIOCSIFBRDADDR, SIOCSIFDSTADDR
and SIOCSIFNETMASK at the socket layer rather than pass them on to the
link layer without validation or credential checks. [SA-13:12]
Prevent cross-mount hardlinks between different nullfs mounts of the
same underlying filesystem. [SA-13:13]
This should be sufficient for 10.0 and will do
until forthcoming work to avoid limitations
in this area is complete.
Thanks to Bela Lubkin at tidalscale for the
headsup on the apic/cpu id/io apic ASL parameters
that are actually hex values and broke when
written as decimal when 11 vCPUs were configured.
des [Mon, 9 Sep 2013 21:18:16 +0000 (21:18 +0000)]
Emit the correct standard library dependency line for C++ programs. In
the CLANG_IS_CC case, the default is now libc++. Only use libstdc++ if
!CLANG_IS_CC or it was explicitly requested in CXXFLAGS.
Add a mmap flag (MAP_32BIT) on 64-bit platforms to request that a mapping use
an address in the first 2GB of the process's address space. This flag should
have the same semantics as the same flag on Linux.
To facilitate this, add a new parameter to vm_map_find() that specifies an
optional maximum virtual address. While here, fix several callers of
vm_map_find() to use a VMFS_* constant for the findspace argument instead of
TRUE and FALSE.
Make the primary name of the OF console device /dev/ofwcons, and only
alias it to the contents of the output property if it is defined. This
avoids a panic when booting machines (QEMU) where the output-device
property is not defined.
Since output-device is free-form and potentially conflicts with other
entries in /dev, I also am not sure we should be doing the aliasing at
all, but this at least makes things work again.
des [Mon, 9 Sep 2013 13:56:58 +0000 (13:56 +0000)]
These three files appeared in 6.0p1, which was imported into the vendor
branch but never merged to head. They were inadvertantly left out when
6.1p1 was merged to head. It didn't make any difference at the time,
because they were unused, but one of them is required for DNS-based host
key verification.
Add POWER CPUs to the kernel's knowledge. This does not imply we currently
actually run on any machines with POWER CPUs but avoids closing that door
unnecessarily.
Add hook called when every new processor is brought online -- including the
BSP -- so that platform modules have a chance to add the new CPU to any
internal bookkeeping.
Use the canonical bits for wired, etc. in the PTE. This is important for
interactions with certain kinds of hypervisors that look into the PTEs
more closely than they should.
In r243868, the error message buffer errmsg have been changed from
an on-stack array to a pointer and therefore sizeof(errmsg) would
become 4 or 8 bytes depending on the architecture.
Fix this by using ERRMSGL in place of sizeof().
Submitted by: J David <j.david.lists@gmail.com>
MFC after: 3 days
Approved by: re (kib)
Prior to r254304, we only began scanning the active page queue when the
amount of free memory was close to the point at which we would begin
reclaiming pages. Now, we continuously scan the active page queue,
regardless of the amount of free memory. Consequently, we are continuously
calling pmap_ts_referenced() on active pages.
Prior to this change, pmap_ts_referenced() would always demote superpage
mappings in order to obtain finer-grained reference information. This made
sense because we were coming under memory pressure and would soon have to
begin reclaiming pages. Now, however, with continuous scanning of the
active page queue, these demotions are taking a toll on performance. For
example, on one of my test machines, the running time for the HPCC Random
Access benchmark (also known as GUPS) has increased by 54%. To address this
problem, I have replaced the demotion with a heuristic for periodically
clearing the reference flag on superpage mappings.
Drain for the xbusy state for two places which potentially do
pmap_remove_all(). Not doing the drain allows the pmap_enter() to
proceed in parallel, making the pmap_remove_all() effects void.
The race results in an invalidated page mapped wired by usermode.
Reported and tested by: pho
Reviewed by: alc
Sponsored by: The FreeBSD Foundation
Approved by: re (glebius)
des [Sun, 8 Sep 2013 09:46:22 +0000 (09:46 +0000)]
Add a stock libmap32.conf for amd64. The first two lines have no effect
except to document the hardcoded standard library search path for 32-bit
binaries. The third line performs the equivalent substitution for the
private library directory.
Ironically, these entries rely on functionality which is only available
in the COMPAT_32BIT version of rtld-elf.
des [Sun, 8 Sep 2013 09:40:23 +0000 (09:40 +0000)]
Create a private library directory (LIBPRIVATEDIR) for libraries which
we don't want to expose but which can't or shouldn't be static.
To mark a library as private, define PRIVATELIB in its Makefile. It
will be installed in LIBPRIVATEDIR, which is normally /usr/lib/private
(or /usr/lib32/private for 32-bit libraries on 64-bit platforms).
To indicate that a program or library depends on a private library,
define USEPRIVATELIB in its Makefile. The correct version of
LIBPRIVATEDIR will be added to its run-time library search path.
Fix the build; Certain linkable symbols need to always be present.
Pass the pointy hat please.
Also unblock the software (Yarrow) generator for now. This will be
reverted; Yarrow needs to block until secure, not this behaviour
of serving as soon as asked.
Folks with specific requiremnts will be able to (can!) unblock this
device with any write, and are encouraged to do so in /etc/rc.d/*
scripting. ("Any" in this case could be "echo '' > /dev/random" as
root).
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