1 systemd System and Service Manager
4 http://0pointer.de/blog/projects/systemd.html
7 http://www.freedesktop.org/wiki/Software/systemd
10 git://anongit.freedesktop.org/systemd/systemd
11 ssh://git.freedesktop.org/git/systemd/systemd
14 http://cgit.freedesktop.org/systemd/systemd
17 http://lists.freedesktop.org/mailman/listinfo/systemd-devel
18 http://lists.freedesktop.org/mailman/listinfo/systemd-commits
21 #systemd on irc.freenode.org
24 https://bugs.freedesktop.org/enter_bug.cgi?product=systemd
32 LGPLv2.1+ for all code
33 - except sd-daemon.[ch] and sd-readahead.[ch] which are MIT
34 - except src/udev/ which is GPLv2.0+
37 Linux kernel >= 2.6.39
39 with cgroups (but it's OK to disable all controllers)
40 optional but strongly recommended: autofs4, ipv6
43 libblkid >= 2.20 (from util-linux) (optional)
44 libkmod >= 5 (optional)
45 PAM >= 1.1.2 (optional)
46 libcryptsetup (optional)
52 tcpwrappers (optional)
54 libqrencode (optional)
55 libmicrohttpd (optional)
57 make, gcc, and similar tools
59 During runtime you need the following additional dependencies:
61 util-linux >= v2.19 (requires fsck -l, agetty -s)
62 sulogin (from util-linux >= 2.22 or sysvinit-tools, optional but recommended)
66 For systmed-bootchart a kernel with procfs support and several
67 proc output options enabled is required:
73 When building from git you need the following additional dependencies:
86 When systemd-hostnamed is used it is strongly recommended to
87 install nss-myhostname to ensure that in a world of
88 dynamically changing hostnames the hostname stays resolvable
89 under all circumstances. In fact, systemd-hostnamed will warn
90 if nss-myhostname is not installed.
92 Note that D-Bus can link against libsystemd-login.so, which
93 results in a cyclic build dependency. To accommodate for this
94 please build D-Bus without systemd first, then build systemd,
95 then rebuild D-Bus with systemd support.
97 To build HTML documentation for python-systemd using sphinx,
98 please first install systemd (using 'make install'), and then
99 invoke sphinx-build with 'make sphinx-<target>', with <target>
100 being 'html' or 'latexpdf'. If using DESTDIR for installation,
101 pass the same DESTDIR to 'make sphinx-html' invocation.
104 Default udev rules use the following standard system group
105 names, which need to be resolvable by getgrnam() at any time,
106 even in the very early boot stages, where no other databases
107 and network are available:
109 tty, dialout, kmem, video, audio, lp, floppy, cdrom, tape, disk
111 During runtime the journal daemon requires the
112 "systemd-journal" system group to exist. New journal files will
113 be readable by this group (but not writable) which may be used
114 to grant specific users read access.
116 It is also recommended to grant read access to all journal
117 files to the system groups "wheel" and "adm" with a command
118 like the following in the post installation script of the
121 # setfacl -nm g:wheel:rx,d:g:wheel:rx,g:adm:rx,d:g:adm:rx /var/log/journal/
123 The journal gateway daemon requires the
124 "systemd-journal-gateway" system user and group to
125 exist. During execution this network facing service will drop
126 privileges and assume this uid/gid for security reasons.
129 systemd will warn you during boot if /etc/mtab is not a
130 symlink to /proc/mounts. Please ensure that /etc/mtab is a
133 systemd will warn you during boot if /usr is on a different
134 file system than /. While in systemd itself very little will
135 break if /usr is on a separate partition many of its
136 dependencies very likely will break sooner or later in one
137 form or another. For example udev rules tend to refer to
138 binaries in /usr, binaries that link to libraries in /usr or
139 binaries that refer to data files in /usr. Since these
140 breakages are not always directly visible systemd will warn
141 about this, since this kind of file system setup is not really
142 supported anymore by the basic set of Linux OS components.
144 For more information on this issue consult
145 http://freedesktop.org/wiki/Software/systemd/separate-usr-is-broken
147 To run systemd under valgrind, compile with VALGRIND defined
148 (e.g. ./configure CPPFLAGS='... -DVALGRIND=1'). Otherwise,
149 false positives will be triggered by code which violates
150 some rules but is actually safe.