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John Baldwin 4403657034 Add a "live" mode to ktrdump.
Support a "live" mode in ktrdump enabled via the -l flag.  In this
mode, ktrdump polls the kernel's trace buffer periodically (currently
hardcoded as a 50 millisecond interval) and dumps any newly added
entries.  Fancier logic for the timeout (e.g. a command line option or
some kind of backoff based on the time since the last entry) can be
added later as the need arises.

While here, fix some bugs from when this was Capsicum-ized:
- Use caph_limit_stream() for the output stream so that isatty() works
  and the output can be line-buffered (especially useful for live
  mode).
- Use caph_limit_stderr() to permit error messages to be displayed if
  an error occurs after cap_enter().

Reviewed by:	kib, 0mp (manpage)
MFC after:	2 months
Differential Revision:	https://reviews.freebsd.org/D17315
2018-10-22 21:25:28 +00:00
bin stty.1: Document kern.tty_info_kstacks behavior (r339471) 2018-10-20 18:53:32 +00:00
cddl Add support for send, receive and state-change DTrace providers for 2018-08-22 21:23:32 +00:00
contrib tcpdump: Log uid on pflog interfaces 2018-10-21 21:17:42 +00:00
crypto Try harder to sanitize the environment before running configure. 2018-10-10 22:29:06 +00:00
etc Move hosts.allow to lib/libwrap/ 2018-09-22 13:17:30 +00:00
gnu Bring back the WARNS level to what it used to be to please gcc arches at least 2018-10-20 21:33:34 +00:00
include Reduce NL_ARGMAX to 4096 to match Linux. 2018-10-04 21:55:58 +00:00
kerberos5 Update the existing heimdal implementation for OpenSSL 1.1. 2018-10-05 16:35:24 +00:00
lib Update to Zstandard 1.3.7 2018-10-22 18:29:12 +00:00
libexec rc.initdiskless: fix commentary grammar after r339465 2018-10-20 18:46:36 +00:00
release release: set -e to exit on error in iso image scripts 2018-10-22 19:39:20 +00:00
rescue Avoid referencing private lib names directly. 2017-11-10 07:53:02 +00:00
sbin pfctl: Fix line numbers when \ is used inside "" 2018-10-22 04:12:51 +00:00
secure openssh: cherry-pick OpenSSL 1.1.1 compatibility 2018-10-06 14:38:34 +00:00
share Make it possible to disable NUMA support with a tunable. 2018-10-22 20:13:51 +00:00
stand Restore the ability to prevent the user from interrupting the boot process 2018-10-21 00:15:51 +00:00
sys A couple of style fixes in recent TCP changes. 2018-10-22 21:17:36 +00:00
targets Add -b/-l options to localedef(1) to specify output endianness and use 2018-10-20 20:51:05 +00:00
tests Reparent a child of pdfork(2) to its reaper when the procdesc is closed. 2018-10-16 20:06:56 +00:00
tools Remove mse(4) from tree 2018-10-22 02:34:10 +00:00
usr.bin Add a "live" mode to ktrdump. 2018-10-22 21:25:28 +00:00
usr.sbin In bhyve's fbuf emulation improve the overall "usage" message and 2018-10-22 11:43:43 +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 Remove spuriously added svn properties 2018-08-02 18:37:02 +00:00
.gitignore Ignore _.universe-toolchain file. 2018-07-01 13:50:37 +00:00
COPYRIGHT Remove 'All Rights Reserved' from the collection copyright and templates. 2018-05-09 02:02:49 +00:00
LOCKS LOCKS: update current locks 2018-06-09 03:08:04 +00:00
MAINTAINERS Add pointer to freebsd-numerics for libm. 2018-07-16 15:29:32 +00:00
Makefile Import tzdata 2018f 2018-10-19 09:58:30 +00:00
Makefile.inc1 Makefile.inc1: clean up stale dependency hacks 2018-10-22 18:40:21 +00:00
Makefile.libcompat Fix non-FreeBSD host lib32 build for TARGET=amd64 2018-08-23 18:19:10 +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 Remove mse(4) from tree 2018-10-22 02:34:10 +00:00
README Import tzdata 2018f 2018-10-19 09:58:30 +00:00
README.md README: add generic notes about GENERIC and NOTES 2018-06-17 19:44:24 +00:00
UPDATING Add updating entry for DRM 2018-10-20 19:14:46 +00:00

FreeBSD Source:

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

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), https://www.freebsd.org/doc/en_US.ISO8859-1/books/handbook/makeworld.html, and https://www.freebsd.org/doc/en_US.ISO8859-1/books/handbook/kernelconfig.html for more information, including setting make(1) variables.

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.

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:

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