volumes. Treat the field as a semaphore protecting availability of
the device for mounting. Do no access devvp->v_rdev without the vnode
lock owned.
Protect change of the devvp->v_bufobj bo_ops vector with the vnode
lock.
Reviewed by: bde
Sponsored by: The FreeBSD Foundation
MFC after: 2 weeks
periodic(8) already handles the security_show_{success,info,badconfig}
variables correctly. However, those variables aren't explicitly set in
/etc/defaults/periodic.conf or anywhere else, which suggests to the user
that they shouldn't be used.
etc/defaults/periodic.conf
Explicitly set defaults for security_show_{success,info,badconfig}
usr.sbin/periodic/periodic.sh
Update usage string
usr.sbin/periodic/periodic.8
Minor man page updates
One thing I'm _not_ doing is recommending setting security_output to
/var/log/security.log or adding that file to /etc/newsyslog.conf, because
periodic(8) would create it with default permissions, usually 644, and
that's probably a bad idea.
Reviewed by: brd
MFC after: 4 weeks
Sponsored by: Spectra Logic Corp
Differential Revision: https://reviews.freebsd.org/D6477
This will still build the compiler for the target but will not build the
bootstrap cross-compiler in the cross-tools phase. Other toolchain
bootstrapping, such as elftoolchan and binutils, currently still occurs.
This will utilize the default CC (cc, /usr/bin/cc) as an external compiler.
This is planned to be on-by-default eventually.
This will utilize the __FreeBSD_cc_version compiler macro defined in the
source tree and compare it to CC's version. If they match then the
cross-compiler is skipped. If [X]CC is an external compiler (absolute
path) or WITHOUT_CROSS_COMPILER is already set, then this logic is skipped.
If the expected bootstrap compiler type no longer matches the found CC
compiler type (clang vs gcc), then the logic is skipped. As an extra
safety check the version number is also compared from the compiler to
the tree version.
Clang:
The macro FREEBSD_CC_VERSION is defined in:
lib/clang/include/clang/Basic/Version.inc
For clang -target will be used if TARGET_ARCH != MACHINE_ARCH. This
is from the current external toolchain logic. There is currently an
assumption that the host compiler can build the TARGET_ARCH. This
will usually be the case since we don't conditionalize target arch
support in clang, but it will break when introducing new
architectures. This problem is mitigated by incrementing the version
when adding new architectures.
GCC:
The macro FBSD_CC_VER is defined in:
gnu/usr.bin/cc/cc_tools/freebsd-native.h
For GCC there is no simple -target support when TARGET_ARCH !=
MACHINE_ARCH. In this case the opportunistic skip is not done. If we
add proper support for this case in external toolchain logic then it
will be fine to enable.
This relies on the macros being incremented whenever any change occurs
to these compilers that warrant rebuilding files. It also should never
repeat earlier values.
Reviewed by: brooks, bapt, imp
Sponsored by: EMC / Isilon Storage Division
Differential Revision: https://reviews.freebsd.org/D6357
The WITH_SYSTEM_COMPILER build option will rely on this value to determine what
__FreeBSD_cc_version the source tree will produce. This value will be compared
against the /usr/bin/cc value to determine if a new compiler is needed.
Start with 1100002 which is 1 more than than the value we've had since
3.8.0 to ensure that all changes since then are present.
Reviewed by: dim
Sponsored by: EMC / Isilon Storage Division
Using a cookie with meta mode causes it to *not rerun* (as normal make
does) unless the command changes or filemon-detected files change.
After all of the work done here it turns out that skipping installation
is dangerous since the install commands use <dir>/*.h. The actual build
command is not changing but the files installed are changing by the mere
act of adding a new header into the source tree. Thus we cannot safely
use meta mode logic here. It must always rerun and install the headers.
The install -C flag at least prevents churning timestamps when
installing a header that was already present.
Sponsored by: EMC / Isilon Storage Division
See r298220 for more explanation. We don't want to prevent installing
if a cookie exists for the install target.
Sponsored by: EMC / Isilon Storage Division
This is mostly a style change so that other code does not duplicate
it. The problem is when META_MODE needs to be disabled but it has
been overridden by .MAKE.MODE.
Sponsored by: EMC / Isilon Storage Division
This is the same problem as r290629. With META_MODE we do not generate
.depend files, so there is no proper dependency to lookup. Guessed
dependencies must be used. If this proves to be a problem then we will
have to generate and use .depend files even with META_MODE.
Sponsored by: EMC / Isilon Storage Division
This is a follow-up to r299289. If the user did not run bootstrap-tools
for this directory then just build the tool as normal. It assumes that
TARGET == MACHINE, but that was already the case before r299289.
Sponsored by: EMC / Isilon Storage Division
sglist_count_vmpages() determines the number of segments required for
a buffer described by an array of VM pages. sglist_append_vmpages()
adds the segments described by such a buffer to an sglist. The latter
function is largely pulled from sglist_append_bio(), and
sglist_append_bio() now uses sglist_append_vmpages().
Reviewed by: kib
Sponsored by: Chelsio Communications
We normally use the binutils from ports but on other systems this
is required for building gcc 4.9.
Obtained from: OpenBSD (CVS rev. 1.5)
MFC after: 3 weeks
The density code and bits per mm values were obtained from an
actual drive density report.
The number of tracks were obtained from an LTO-7 hardware
announcement on IBM's web site.
Sponsored by: Spectra Logic
MFC after: 3 days
- Use arc4random_uniform(3).
- Prevent a segmentation fault when ed receives a signal
while being in getpass(). [1]
Obtained from: OpenBSD [1] (CVS Rev. 1.15)
MFC after: 2 weeks
Add implementations of bus_map/unmap_resource to the x86 nexus driver.
Change bus_activate/deactivate_resource to honor RF_UNMAPPED and to
use bus_map/unmap_resource to create/destroy the implicit mapping when
RF_UNMAPPED is not set.
Reviewed by: cem
Differential Revision: https://reviews.freebsd.org/D5237
Add a pair of bus methods that can be used to "map" resources for direct
CPU access using bus_space(9). bus_map_resource() creates a mapping and
bus_unmap_resource() releases a previously created mapping. Mappings are
described by 'struct resource_map' object. Pointers to these objects can
be passed as the first argument to the bus_space wrapper API used for bus
resources.
Drivers that wish to map all of a resource using default settings
(for example, using uncacheable memory attributes) do not need to change.
However, drivers that wish to use non-default settings can now do so
without jumping through hoops.
First, an RF_UNMAPPED flag is added to request that a resource is not
implicitly mapped with the default settings when it is activated. This
permits other activation steps (such as enabling I/O or memory decoding
in a device's PCI command register) to be taken without creating a
mapping. Right now the AGP drivers don't set RF_ACTIVE to avoid using
up a large amount of KVA to map the AGP aperture on 32-bit platforms.
Once RF_UNMAPPED is supported on all platforms that support AGP this
can be changed to using RF_UNMAPPED with RF_ACTIVE instead.
Second, bus_map_resource accepts an optional structure that defines
additional settings for a given mapping.
For example, a driver can now request to map only a subset of a resource
instead of the entire range. The AGP driver could also use this to only
map the first page of the aperture (IIRC, it calls pmap_mapdev() directly
to map the first page currently). I will also eventually change the
PCI-PCI bridge driver to request mappings of the subset of the I/O window
resource on its parent side to create mappings for child devices rather
than passing child resources directly up to nexus to be mapped. This
also permits bridges that do address translation to request suitable
mappings from a resource on the "upper" side of the bus when mapping
resources on the "lower" side of the bus.
Another attribute that can be specified is an alternate memory attribute
for memory-mapped resources. This can be used to request a
Write-Combining mapping of a PCI BAR in an MI fashion. (Currently the
drivers that do this call pmap_change_attr() directly for x86 only.)
Note that this commit only adds the MI framework. Each platform needs
to add support for handling RF_UNMAPPED and thew new
bus_map/unmap_resource methods. Generally speaking, any drivers that
are calling rman_set_bustag() and rman_set_bushandle() need to be
updated.
Discussed on: arch
Reviewed by: cem
Differential Revision: https://reviews.freebsd.org/D5237
Make __FreeBSD_cc_version predefined macro configurable at build time
The `FreeBSDTargetInfo` class has always set the `__FreeBSD_cc_version`
predefined macro to a rather static value, calculated from the major OS
version.
In the FreeBSD base system, we will start incrementing the value of this
macro whenever we make any signifant change to clang, so we need a way
to configure the macro's value at build time.
Use `FREEBSD_CC_VERSION` for this, which we can define in the FreeBSD
build system using either the `-D` command line option, or an include
file. Stock builds will keep the earlier value.
Differential Revision: http://reviews.llvm.org/D20037
Follow-up commits will start using the __FreeBSD_cc_version to determine
whether a bootstrap compiler has to be built during buildworld.
