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Stephen Hemminger 7c4bd9ac98
bus-dump: change capture output to use pcapng (#21738) 
This patch changes busctl capture to generate pcapng format
instead of the legacy pcap format files. It includes basic
meta-data in the file and still uses microsecond time
resolution. In future, more things can be added such as
high resolution timestams, statistics, etc.

PCAP Next Generation capture file format is what tshark uses
and is in process of being standardized in IETF. It is also
readable with libpcap.

$ capinfos /tmp/new.pcapng
File name:           /tmp/new.pcapng
File type:           Wireshark/... - pcapng
File encapsulation:  D-Bus
File timestamp precision:  microseconds (6)
Packet size limit:   file hdr: (not set)
Packet size limit:   inferred: 4096 bytes
Number of packets:   22
File size:           21kB
Data size:           20kB
Capture duration:    0.005694 seconds
First packet time:   2021-12-11 11:57:42.788374
Last packet time:    2021-12-11 11:57:42.794068
Data byte rate:      3,671kBps
Data bit rate:       29Mbps
Average packet size: 950.27 bytes
Average packet rate: 3,863 packets/s
SHA256:              b85ed8b094af60c64aa6d9db4a91404e841736d36b9e662d707db9e4096148f1
RIPEMD160:           81f9bac7ec0ec5cd1d55ede136a5c90413894e3a
SHA1:                8400822ef724b934d6000f5b7604b9e6e91be011
Strict time order:   True
Capture oper-sys:    Linux 5.14.0-0.bpo.2-amd64
Capture application: systemd 250 (250-rc2-33-gdc79ae2+)
Number of interfaces in file: 1
Interface #0 info:
                     Encapsulation = D-Bus (146 - dbus)
                     Capture length = 4096
                     Time precision = microseconds (6)
                     Time ticks per second = 1000000
                     Number of stat entries = 0
                     Number of packets = 22
2021-12-25 15:07:40 +09:00
.github ci: test build with supported cryptolibs to some degree 2021-12-24 16:24:16 +01:00
.lgtm/cpp-queries ci: pack-ify our custom CodeQL queries and enable them in Actions 2021-12-07 14:57:09 +01:00
.semaphore Change all fixed-path bash shebangs to /u/b/env bash outside test/ 2021-12-12 21:13:50 +01:00
catalog units: added factory-reset.target 2021-08-10 17:08:00 +02:00
coccinelle list: drop unnecessary line continuation 2021-12-25 00:47:37 +09:00
docs doc: fix typo 2021-12-09 08:50:19 +01:00
factory/etc pam: fix typo try_authtok → use_authtok 2021-05-12 12:14:17 +02:00
hwdb.d hwdb: update hwdb for v250-final 2021-12-23 19:53:59 +09:00
LICENSES licensing: add a license file for the fonts we carry 2021-10-18 09:43:18 +02:00
man bus-dump: change capture output to use pcapng (#21738) 2021-12-25 15:07:40 +09:00
mkosi.default.d ci: check for failed services after boot 2021-12-10 10:25:43 +01:00
modprobe.d meson: install the right README file in modprobe.d 2021-07-07 14:52:05 +02:00
network network: dhcp-pd: add 6rd support 2021-12-07 20:33:16 +09:00
po Update LINGUAS (#21499) 2021-11-25 20:24:00 +09:00
presets units: enable systemd-network-generator by default 2021-12-16 09:49:39 +01:00
rules.d Enable /dev/sgx_vepc access for the group 'sgx' 2021-12-12 11:02:21 +00:00
shell-completion bus-dump: change capture output to use pcapng (#21738) 2021-12-25 15:07:40 +09:00
src bus-dump: change capture output to use pcapng (#21738) 2021-12-25 15:07:40 +09:00
sysctl.d build: preserve correct mode when generating files via jinja2 2021-11-08 12:06:48 +00:00
sysusers.d sysusers: avoid creating spurious "nobody" group 2021-11-30 16:16:25 +01:00
test Merge pull request #21648 from yuwata/network-tunnel-local-automatic-address-selection 2021-12-25 15:05:13 +09:00
tmpfiles.d tmpfiles: split out config for systemd-resolve 2021-11-16 16:56:08 +01:00
tools man: also add anotations for methods 2021-12-24 10:18:11 +00:00
units logind: add a comment with a reminder why we don't use ProtrectProc= 2021-12-17 21:34:20 +09:00
xorg xorg/50-systemd-user: add a full license header 2021-10-01 14:45:00 +02:00
.clang-format clang-format: set SpaceBeforeParens to ControlStatementsExceptForEachMacros 2020-11-16 16:57:51 +09:00
.ctags editors: Prevent ctags from following symlinks 2019-02-15 11:01:20 -08:00
.dir-locals.el scripts: use 4 space indentation 2019-04-12 08:30:31 +02:00
.editorconfig editorconfig: set maximum line length to 109 for man/*.xml files 2021-09-30 13:45:34 +02:00
.gitattributes gitattributes: introduce and use "generated" attribute 2021-10-18 09:42:55 +02:00
.gitignore gitignore: remove patterns for build files in source dir 2021-12-08 09:52:31 +01:00
.lgtm.yml ci: add a missing SPDX header 2021-12-07 14:15:04 +01:00
.mailmap mailmap: two more names 2021-03-30 13:17:58 +02:00
.packit.yml Revert "ci: temporarily set -Wno-deprecated-declarations in Packit" 2021-12-09 10:27:18 +01:00
.vimrc scripts: use 4 space indentation 2019-04-12 08:30:31 +02:00
.ycm_extra_conf.py ycm: add doc string for all the functions in configuration file 2017-11-29 13:21:49 -07:00
configure tools: shellcheck-ify tool scripts 2021-09-30 12:27:06 +02:00
LICENSE.GPL2 relicense to LGPLv2.1 (with exceptions) 2012-04-12 00:24:39 +02:00
LICENSE.LGPL2.1 licence: remove references to old FSF address 2012-12-17 11:41:31 +01:00
Makefile tree-wide: add spdx header on all scripts and helpers 2021-01-28 09:55:35 +01:00
meson.build bus-dump: change capture output to use pcapng (#21738) 2021-12-25 15:07:40 +09:00
meson_options.txt boot, meson: allow statically linked build 2021-12-14 09:58:27 +09:00
mkosi.build ci: check for failed services after boot 2021-12-10 10:25:43 +01:00
mkosi.postinst ci: check for failed services after boot 2021-12-10 10:25:43 +01:00
NEWS NEWS: finalize release 2021-12-23 21:09:35 +01:00
README change req meson version 2021-10-26 09:29:14 +01:00
README.md Fix loading of graphs 2021-12-14 15:27:25 +09:00
TODO Merge pull request #21170 from keszybz/delibgcryptify 2021-12-03 13:44:53 +01:00

README.md

Systemd

System and Service Manager

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Details

Most documentation is available on systemd's web site.

Assorted, older, general information about systemd can be found in the systemd Wiki.

Information about build requirements is provided in the README file.

Consult our NEWS file for information about what's new in the most recent systemd versions.

Please see the Code Map for information about this repository's layout and content.

Please see the Hacking guide for information on how to hack on systemd and test your modifications.

Please see our Contribution Guidelines for more information about filing GitHub Issues and posting GitHub Pull Requests.

When preparing patches for systemd, please follow our Coding Style Guidelines.

If you are looking for support, please contact our mailing list or join our IRC channel.

Stable branches with backported patches are available in the stable repo.