freebsd with flexible iflib nic queues
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Bryan Drewery b81ddc83c9 Fix -S with -b not atomically updating the destination file.
With both of these flags, the backup was created via rename(dest, backup)
followed by rename(tmp, dest).  This left the destination file missing
for a moment which contradicts the point of -S.

This fixes a race with installworld where PRECIOUSPROG and PRECIOUSLIB
files (which use -S for installation) would briefly be missing.  In the
case of installing rtld with parallel installworld it could render an
error due to not having rtld present to run install/cp in another
process.

Reported by:	jhb
Reviewed by:	jhb
MFC after:	1 week
Sponsored by:	EMC / Isilon Storage Division
Differential Revision:	https://reviews.freebsd.org/D7451
2016-08-10 18:19:02 +00:00
bin uuid_to_string(3) is allocating memory and can fail on that. 2016-08-03 18:04:08 +00:00
cddl Highball memory requirement (4GB) with common/{raise,safety} 2016-08-10 03:10:34 +00:00
contrib Add timer_settime tests using SIGEV_THREAD. 2016-08-08 17:57:25 +00:00
crypto Try to check whether each key file exists before adding it, and bail out 2016-08-08 10:46:18 +00:00
etc Disable DSA again. 2016-08-03 16:34:20 +00:00
gnu rename ARM's libunwind.S to to avoid conflict with llvm libunwind 2016-07-27 16:34:19 +00:00
include Make libcrypt thread-safe. Add crypt_r(3). 2016-08-10 15:16:28 +00:00
kerberos5 DIRDEPS_BUILD: Update dependencies 2016-06-14 16:55:05 +00:00
lib Make libcrypt thread-safe. Add crypt_r(3). 2016-08-10 15:16:28 +00:00
libexec [mips] add support for using the MIPS user register for TLS data. 2016-08-07 01:29:55 +00:00
release Pass overrides to make(1) when building ports for arm/armv6 2016-08-09 22:48:46 +00:00
rescue DIRDEPS_BUILD: Fix and hookup rescue/rescue to the build. 2016-05-26 23:20:40 +00:00
sbin Fix formatting of setfib opcode. 2016-08-08 18:30:50 +00:00
secure Make libcrypt thread-safe. Add crypt_r(3). 2016-08-10 15:16:28 +00:00
share Remove extra -msoft-float flags settings. 2016-08-10 13:32:27 +00:00
sys Improve a consistency check to not detect valid cases for 2016-08-10 17:19:33 +00:00
targets Add clang-format under WITH_CLANG_EXTRAS. 2016-06-17 16:46:58 +00:00
tests Fix locking issues with aio_fsync(). 2016-07-29 18:26:15 +00:00
tools Add a dmardump utility to dump the VT-d context tables. 2016-08-09 19:06:05 +00:00
usr.bin Fix -S with -b not atomically updating the destination file. 2016-08-10 18:19:02 +00:00
usr.sbin ancontrol(8): replace comma with semicolon when pertinent. 2016-08-09 19:46:05 +00:00
.arcconfig Remove project.name which is a product of a bygone era. 2016-04-21 04:33:07 +00:00
.arclint phabricator related changes: 2015-04-20 20:33:22 +00:00
COPYRIGHT Bump copyright year. 2015-12-31 11:21:45 +00:00
LOCKS
MAINTAINERS Remove myself from kern_timeout.c yeah! 2016-07-27 20:37:32 +00:00
Makefile make world: Allow installworld to be ran in parallel. 2016-08-08 18:13:03 +00:00
Makefile.inc1 Add libprocstat prebuild library dependencies. 2016-07-30 03:43:55 +00:00
Makefile.libcompat Don't disable binutils/elftoolchain bootstrapping with external compiler. 2016-07-24 18:50:11 +00:00
ObsoleteFiles.inc Add tblgen to ObsoleteFiles.inc, as it was renamed to llvm-tblgen. 2016-07-28 18:40:43 +00:00
README README: remove nonexistent 'games' directory. 2016-05-18 10:43:13 +00:00
UPDATING Minor wording improvements to the note about pipe(2) removal. 2016-07-20 18:00:22 +00:00

This is the top level of the FreeBSD source directory.  This file
was last revised on:
$FreeBSD$

For copyright information, please see the file COPYRIGHT in this
directory (additional copyright information also exists for some
sources in this tree - please see the specific source directories for
more information).

The Makefile in this directory supports a number of targets for
building components (or all) of the FreeBSD source tree.  See build(7)
and http://www.freebsd.org/doc/en_US.ISO8859-1/books/handbook/makeworld.html
for more information, including setting make(1) variables.

The `buildkernel` and `installkernel` targets build and install
the kernel and the modules (see below).  Please see the top of
the Makefile in this directory for more information on the
standard build targets and compile-time flags.

Building a kernel is a somewhat more involved process.  See build(7), config(8),
and http://www.freebsd.org/doc/en_US.ISO8859-1/books/handbook/kernelconfig.html
for more information.

Note: If you want to build and install the kernel with the
`buildkernel` and `installkernel` targets, you might need to build
world before.  More information is available in the handbook.

The kernel configuration files reside in the sys/<arch>/conf
sub-directory.  GENERIC is the default configuration used in release builds.
NOTES contains entries and documentation for all possible
devices, not just those commonly used.


Source Roadmap:
---------------

bin		System/user commands.

cddl		Various commands and libraries under the Common Development
		and Distribution License.

contrib		Packages contributed by 3rd parties.

crypto		Cryptography stuff (see crypto/README).

etc		Template files for /etc.

gnu		Various commands and libraries under the GNU Public License.
		Please see gnu/COPYING* for more information.

include		System include files.

kerberos5	Kerberos5 (Heimdal) package.

lib		System libraries.

libexec		System daemons.

release		Release building Makefile & associated tools.

rescue		Build system for statically linked /rescue utilities.

sbin		System commands.

secure		Cryptographic libraries and commands.

share		Shared resources.

sys		Kernel sources.

tests		Regression tests which can be run by Kyua.  See tests/README
		for additional information.

tools		Utilities for regression testing and miscellaneous tasks.

usr.bin		User commands.

usr.sbin	System administration commands.


For information on synchronizing your source tree with one or more of
the FreeBSD Project's development branches, please see:

  http://www.freebsd.org/doc/en_US.ISO8859-1/books/handbook/synching.html