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Mark Johnston 74a68313b5 socket: Add macros to lock socket buffers using socket references 
Since commit c67f3b8b78 the sockbuf
mutexes belong to the containing socket.  Sockbufs contain a pointer to
a mutex, which by default is initialized to the corresponding mutexes in
the socket.  The SOCKBUF_LOCK() etc. macros operate on this pointer.
However, the pointer is clobbered by listen(2) so it's not safe to use
them unless one is sure that the socket is not a listening socket.

This change introduces a new set of macros which lock socket buffers
through the socket.  This is a bit cheaper since it removes the pointer
indirection, and allows one to safely lock socket buffers and then check
for a listening socket.

For MFC, these macros should be reimplemented in terms of the existing
socket buffer layout.

Reviewed by:	tuexen, gallatin, jhb
Sponsored by:	The FreeBSD Foundation
Differential Revision:	https://reviews.freebsd.org/D31900
2021-09-10 17:20:39 -04:00
.cirrus-ci Cirrus-CI: add some timing info on pkg install failure 2021-08-04 15:02:00 -04:00
.github [skip ci] fix syntax in CODEOWNERS 2021-07-22 10:58:54 -06:00
bin sh: improve emacs mode 2021-08-28 16:11:57 +02:00
cddl dtrace.1: Document a couple of preprocessor-related options 2021-09-07 14:04:50 -04:00
contrib make: fix MAKE_JOB_ERROR_TOKEN 2021-09-10 13:11:28 -07:00
crypto openssh: regen config.h 2021-09-09 20:16:14 -04:00
etc Add support for jail.conf.d 2021-09-10 00:30:04 -05:00
gnu dialog: fix macro redefinition 2021-03-01 16:01:44 +01:00
include Add _Fork() 2021-08-03 21:19:32 +03:00
kerberos5 pkgbase: Create a FreeBSD-kerberos package 2021-09-07 10:23:14 +02:00
lib libc: Fix build on case-insensitive file systems 2021-09-10 01:19:38 +01:00
libexec Add support for jail.conf.d 2021-09-10 00:30:04 -05:00
release pkgbase: Create a FreeBSD-ftp package 2021-09-07 10:25:23 +02:00
rescue Fix building rescue/rescue when sanitizers are enabled 2021-07-06 12:18:30 +01:00
sbin ipfw: Introduce dnctl 2021-09-08 17:17:50 +02:00
secure openssh: Add new source files to libssl 2021-09-10 00:56:24 +02:00
share Add support for jail.conf.d 2021-09-10 00:30:04 -05:00
stand lualoader: use more concise verbiage for autoboot 2021-09-09 02:01:50 -05:00
sys socket: Add macros to lock socket buffers using socket references 2021-09-10 17:20:39 -04:00
targets Fix bootstrapping to actually build lldb-tblgen for later use 2021-08-24 15:04:25 +01:00
tests pf tests: synproxy to localhost test 2021-09-10 15:16:37 +02:00
tools stress2: Add a syzkaller reproducer 2021-09-09 07:30:47 +00:00
usr.bin tabs: a hacky version of tabs appeared in 1st edition Unix 2021-09-09 17:11:18 -06:00
usr.sbin pkgbase: Move back mlxcontrol in the default package 2021-09-09 08:14:53 +02:00
.arcconfig Remove history.immutable from .arcconfig 2021-04-13 12:36:25 +01:00
.arclint arc lint: ignore /tests/ in chmod 2017-12-19 03:38:06 +00:00
.cirrus.yml Cirrus-CI: reduce VM memory to 8G 2021-08-30 21:40:37 -04:00
.clang-format clang-format: Avoid breaking after the opening paren of function definitions 2020-10-28 11:54:00 +00:00
.gitattributes Add a basic clang-format configuration file 2019-06-07 15:23:52 +00:00
.gitignore gitignore: Add .clangd and .ccls-cache 2021-06-04 16:56:08 +08:00
COPYRIGHT copyrights: Happy New Year 2021 2020-12-31 10:29:44 -05:00
LOCKS LOCKS: update current locks 2018-06-09 03:08:04 +00:00
MAINTAINERS [skip ci] volunteer to maintain POSIX AIO 2021-05-30 17:21:12 -06:00
Makefile Revert "Fix native-xtools build" 2021-08-03 10:00:28 -07:00
Makefile.inc1 Add WITH_LLVM_BINUTILS to install LLVM binutils instead of Elftoolchain 2021-09-06 09:49:49 +01:00
Makefile.libcompat Prefer MK_SSP=no to SSP_CFLAGS= 2021-08-04 15:23:22 -03:00
Makefile.sys.inc AUTO_OBJ: For all top-level targets enforce using an OBJDIR. 2017-12-05 21:29:47 +00:00
ObsoleteFiles.inc Don't build and install {llvm,clang,lldb}-tblgen for the target 2021-09-06 09:32:41 +01:00
README.md Whitespace cleanup 2021-03-12 19:57:58 +08:00
RELNOTES RELNOTES: Add entries for KASAN and KMSAN 2021-08-11 13:08:36 -04:00
UPDATING UPDATING: Add a note about OpenSSL defaulting KTLS to off. 2021-08-17 14:43:46 -07:00

README.md

FreeBSD Source:

This is the top level of the FreeBSD source directory.

FreeBSD is an operating system used to power modern servers, desktops, and embedded platforms. A large community has continually developed it for more than thirty years. Its advanced networking, security, and storage features have made FreeBSD the platform of choice for many of the busiest web sites and most pervasive embedded networking and storage devices.

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), config(8), FreeBSD handbook on building userland, and Handbook for kernels for more information, including setting make(1) variables.

Source Roadmap:

Directory Description
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 and gnu/COPYING.LIB 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.
sys/arch/conf Kernel configuration files. GENERIC is the configuration used in release builds. NOTES contains documentation of all possible entries.
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 FreeBSD Handbook.