freebsd with flexible iflib nic queues
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Hans Petter Selasky e23ae408c0 Decouple Linux files from the belonging character device right after open
in the LinuxKPI. This is done by calling finit() just before returning a magic
value of ENXIO in the "linux_dev_fdopen" function.

The Linux file structure should mimic the BSD file structure as much as
possible. This patch decouples the Linux file structure from the belonging
character device right after the "linux_dev_fdopen" function has returned.
This fixes an issue which allows a Linux file handle to exist after a
character device has been destroyed and removed from the directory index
of /dev. Only when the reference count of the BSD file handle reaches zero,
the Linux file handle is destroyed. This fixes use-after-free issues related
to accessing the Linux file structure after the character device has been
destroyed.

While at it add a missing NULL check for non-present file operation.
Calling a NULL pointer will result in a segmentation fault.

Reviewed by:	kib @
MFC after:	1 week
Sponsored by:	Mellanox Technologies
2018-01-26 10:49:02 +00:00
bin dd(1): Use a local swapbytes() function. 2018-01-26 03:30:05 +00:00
cddl Remove uneeded parentheses. 2018-01-25 15:31:56 +00:00
contrib Upgrade our copies of clang, llvm, lld, lldb, compiler-rt and libc++ to 2018-01-24 22:35:00 +00:00
crypto Add declaration of SSL_get_selected_srtp_profile() for OpenSSL. 2018-01-25 23:38:05 +00:00
etc Support configuring arbitrary limits(1) for any daemon in rc.conf 2018-01-24 14:15:06 +00:00
gnu Recognize mchk_calltrap as a trapframe generator. 2018-01-19 01:36:25 +00:00
include Vendor import of libc++ release_60 branch r323338: 2018-01-24 20:25:56 +00:00
kerberos5 various: general adoption of SPDX licensing ID tags. 2017-11-27 15:37:16 +00:00
lib o EMFILE errno documented. 2018-01-26 08:38:26 +00:00
libexec rpc.sprayd: Remove 3rd and 4th clauses in christos' license. 2017-12-28 17:51:53 +00:00
release Bump Copyright year following r328283. 2018-01-23 16:48:31 +00:00
rescue Avoid referencing private lib names directly. 2017-11-10 07:53:02 +00:00
sbin devd: readd virtual 2018-01-26 05:03:37 +00:00
secure Merge OpenSSL 1.0.2n. 2017-12-07 18:02:57 +00:00
share example cdev: use make_dev_s 2018-01-26 04:24:39 +00:00
stand Refactoring of reading and writing of the UFS/FFS superblock. 2018-01-26 00:58:32 +00:00
sys Decouple Linux files from the belonging character device right after open 2018-01-26 10:49:02 +00:00
targets Remove a reference to burncd 2017-12-29 23:56:06 +00:00
tests Mark the unused argument to continue_thread() as such. 2018-01-24 17:46:20 +00:00
tools Vendor import of llvm release_60 branch r323338: 2018-01-24 20:23:48 +00:00
usr.bin time(1): use clock_gettime(2) instead of gettimeofday(2) 2018-01-24 17:12:34 +00:00
usr.sbin o A command line flag for the syslog_facility fixed in the SYNOPSIS. 2018-01-26 08:52:28 +00:00
.arcconfig callsign isn't required anymore 2016-09-29 06:19:45 +00:00
.arclint arc lint: ignore /tests/ in chmod 2017-12-19 03:38:06 +00:00
.gitattributes .git*: add gitattributes and gitignore 2017-12-25 21:07:54 +00:00
.gitignore .git*: add gitattributes and gitignore 2017-12-25 21:07:54 +00:00
COPYRIGHT Happy New Year 2018 my friends! 2017-12-31 16:48:04 +00:00
LOCKS
MAINTAINERS Move sys/boot to stand. Fix all references to new location 2017-11-14 23:02:19 +00:00
Makefile Import tzdata 2018c 2018-01-24 06:45:03 +00:00
Makefile.inc1 `make installkernel' should display a completed message if done 2018-01-25 21:36:26 +00:00
Makefile.libcompat X_COMPILER_* may not be defined. 2018-01-24 18:08:37 +00:00
Makefile.sys.inc AUTO_OBJ: For all top-level targets enforce using an OBJDIR. 2017-12-05 21:29:47 +00:00
ObsoleteFiles.inc Upgrade our copies of clang, llvm, lld, lldb, compiler-rt and libc++ to 2018-01-14 00:08:34 +00:00
README Import tzdata 2018c 2018-01-24 06:45:03 +00:00
README.md Document the sys/boot -> stand move in hier.7 and the top-level README. 2017-12-03 20:36:36 +00:00
UPDATING Upgrade our copies of clang, llvm, lld, lldb, compiler-rt and libc++ to 2018-01-14 00:08:34 +00:00

FreeBSD Source:

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 https://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 https://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.

stand			Boot loader sources.

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:

https://www.freebsd.org/doc/en_US.ISO8859-1/books/handbook/current-stable.html