X-Git-Url: https://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?p=elogind.git;a=blobdiff_plain;f=README;h=b8d1f42e254676193c6aeacc1385d0d98e22bd3f;hp=15afb2cf95de36106e34798727f18a518fe050a1;hb=b5baa8fe8838870cc2bd7cef0949299f061ae15d;hpb=6705c2df468a6afb4f8f834822780add123065e2 diff --git a/README b/README index 15afb2cf9..b8d1f42e2 100644 --- a/README +++ b/README @@ -1,4 +1,4 @@ -systemd System and Session Manager +systemd System and Service Manager DETAILS: http://0pointer.de/blog/projects/systemd.html @@ -7,11 +7,11 @@ WEB SITE: http://www.freedesktop.org/wiki/Software/systemd GIT: - git://anongit.freedesktop.org/systemd - ssh://git.freedesktop.org/git/systemd + git://anongit.freedesktop.org/systemd/systemd + ssh://git.freedesktop.org/git/systemd/systemd GITWEB: - http://cgit.freedesktop.org/systemd/ + http://cgit.freedesktop.org/systemd/systemd MAILING LIST: http://lists.freedesktop.org/mailman/listinfo/systemd-devel @@ -24,55 +24,142 @@ BUG REPORTS: https://bugs.freedesktop.org/enter_bug.cgi?product=systemd AUTHOR: - Lennart Poettering with major support from Kay Sievers + Lennart Poettering + Kay Sievers + ...and many others LICENSE: - GPLv2+ for all code, except sd-daemon.[ch] which is MIT + LGPLv2.1+ for all code + - except sd-daemon.[ch] and sd-readahead.[ch] which are MIT + - except src/udev/ which is (currently still) GPLv2+ REQUIREMENTS: - Linux kernel >= 2.6.39 (with devtmpfs, cgroups; optional but strongly recommended: autofs4, ipv6) - libudev >= 172 + Linux kernel >= 2.6.39 + CONFIG_DEVTMPFS + CONFIG_CGROUPS (it's OK to disable all controllers) + CONFIG_INOTIFY_USER + CONFIG_SIGNALFD + CONFIG_TIMERFD + CONFIG_EPOLL + CONFIG_NET + CONFIG_SYSFS + + Linux kernel >= 3.8 for Smack support + + Udev will fail to work with the legacy layout: + CONFIG_SYSFS_DEPRECATED=n + + Legacy hotplug slows down the system and confuses udev: + CONFIG_UEVENT_HELPER_PATH="" + + Userspace firmware loading is deprecated, will go away, and + sometimes causes problems: + CONFIG_FW_LOADER_USER_HELPER=n + + Some udev rules and virtualization detection relies on it: + CONFIG_DMIID + + Mount and bind mount handling might require it: + CONFIG_FHANDLE + + Optional but strongly recommended: + CONFIG_IPV6 + CONFIG_AUTOFS4_FS + CONFIG_TMPFS_POSIX_ACL + CONFIG_TMPFS_XATTR + CONFIG_SECCOMP + + For systemd-bootchart a kernel with procfs support and several + proc output options enabled is required: + CONFIG_PROC_FS + CONFIG_SCHEDSTATS + CONFIG_SCHED_DEBUG + + For UEFI systems: + CONFIG_EFI_VARS + CONFIG_EFI_PARTITION + dbus >= 1.4.0 libcap - gtk+ >= 2.20 (optional) + libblkid >= 2.20 (from util-linux) (optional) + libkmod >= 5 (optional) PAM >= 1.1.2 (optional) libcryptsetup (optional) libaudit (optional) + libacl (optional) + libattr (optional) libselinux (optional) + liblzma (optional) tcpwrappers (optional) - libnotify (optional) + libgcrypt (optional) + libqrencode (optional) + libmicrohttpd (optional) + libpython (optional) + make, gcc, and similar tools + + During runtime you need the following additional dependencies: + + util-linux >= v2.19 (requires fsck -l, agetty -s) + sulogin (from util-linux >= 2.22 or sysvinit-tools, optional but recommended) + dracut (optional) + PolicyKit (optional) - When you build from git you need the following additional dependencies: + When building from git you need the following additional dependencies: - vala >= 0.10 docbook-xsl xsltproc automake autoconf libtool + intltool gperf - make, gcc, and similar tools - - During runtime you need the following dependencies: - - util-linux > v2.18 (requires fsck -l, agetty -s) - sulogin (from sysvinit-tools, optional but recommended) - plymouth (optional) - dracut (optional) + gtkdocize (optional) + python (optional) + sphinx (optional) + python-lxml (entirely optional) When systemd-hostnamed is used it is strongly recommended to install nss-myhostname to ensure that in a world of - dynamically changing hostnames the hostname stays resolveable + dynamically changing hostnames the hostname stays resolvable under all circumstances. In fact, systemd-hostnamed will warn - if nss-myhostname is not installed. Packagers are encouraged to - add a dependency on nss-myhostname to the package that - includes systemd-hostnamed. + if nss-myhostname is not installed. Note that D-Bus can link against libsystemd-login.so, which - results in a cyclic build dependency. To accomodate for this + results in a cyclic build dependency. To accommodate for this please build D-Bus without systemd first, then build systemd, then rebuild D-Bus with systemd support. + To build HTML documentation for python-systemd using sphinx, + please first install systemd (using 'make install'), and then + invoke sphinx-build with 'make sphinx-', with + being 'html' or 'latexpdf'. If using DESTDIR for installation, + pass the same DESTDIR to 'make sphinx-html' invocation. + +USERS AND GROUPS: + Default udev rules use the following standard system group + names, which need to be resolvable by getgrnam() at any time, + even in the very early boot stages, where no other databases + and network are available: + + tty, dialout, kmem, video, audio, lp, floppy, cdrom, tape, disk + + During runtime the journal daemon requires the + "systemd-journal" system group to exist. New journal files will + be readable by this group (but not writable) which may be used + to grant specific users read access. + + It is also recommended to grant read access to all journal + files to the system groups "wheel" and "adm" with a command + like the following in the post installation script of the + package: + + # setfacl -nm g:wheel:rx,d:g:wheel:rx,g:adm:rx,d:g:adm:rx /var/log/journal/ + + The journal gateway daemon requires the + "systemd-journal-gateway" system user and group to + exist. During execution this network facing service will drop + privileges and assume this uid/gid for security reasons. + WARNINGS: systemd will warn you during boot if /etc/mtab is not a symlink to /proc/mounts. Please ensure that /etc/mtab is a @@ -92,12 +179,7 @@ WARNINGS: For more information on this issue consult http://freedesktop.org/wiki/Software/systemd/separate-usr-is-broken -ENGINEERING AND CONSULTING SERVICES: - ProFUSION offers professional - engineering and consulting services for systemd for embedded - and other use. Please contact Gustavo Barbieri - for more information. - - Disclaimer: This notice is not a recommendation or official - endorsement. However, ProFUSION's upstream work has been very - beneficial for the systemd project. + To run systemd under valgrind, compile with VALGRIND defined + (e.g. ./configure CPPFLAGS='... -DVALGRIND=1'). Otherwise, + false positives will be triggered by code which violates + some rules but is actually safe.