Go to file
Zbigniew Jędrzejewski-Szmek 19adb8a320 systemd-sleep: add support for freeze and standby
A new config file /etc/systemd/sleep.conf is added.
It is parsed by systemd-sleep and logind. The strings written
to /sys/power/disk and /sys/power/state can be configured.
This allows people to use different modes of suspend on
systems with broken or special hardware.

Configuration is shared between systemd-sleep and logind
to enable logind to answer the question "can the system be
put to sleep" as correctly as possible without actually
invoking the action. If the user configured systemd-sleep
to only use 'freeze', but current kernel does not support it,
logind will properly report that the system cannot be put
to sleep.

https://bugs.freedesktop.org/show_bug.cgi?id=57793
https://git.kernel.org/?p=linux/kernel/git/torvalds/linux.git;a=commit;h=7e73c5ae6e7991a6c01f6d096ff8afaef4458c36
http://lists.freedesktop.org/archives/systemd-devel/2013-February/009238.html

SYSTEM_CONFIG_FILE and USER_CONFIG_FILE defines were removed
since they were used in only a few places and with the
addition of /etc/systemd/sleep.conf it becomes easier to just
append the name of each file to the dir name.
2013-05-06 22:51:57 +02:00
catalog catalog: remove broken links to wiki 2013-03-19 21:50:43 -04:00
docs doc: disable gtk-doc test again - you are a really annoying piece of software 2013-03-21 15:07:54 +01:00
hwdb hwdb: update 2013-05-06 17:39:07 +02:00
keymaps keymap: Add HP EliteBook 8460p 2013-04-09 15:32:22 +02:00
keymaps-force-release keymap: Update the list of Samsung Series 9 models 2012-11-28 21:27:03 +01:00
m4 Replace autoconf int max test with simple define 2013-01-22 23:20:15 -05:00
man systemd-sleep: add support for freeze and standby 2013-05-06 22:51:57 +02:00
po l10n: Updated Polish translation 2013-01-14 23:30:39 +01:00
rules always unconditionally create /dev/rtc and use it internally 2013-04-26 01:11:52 +02:00
shell-completion zsh_completion: complete only pids for systemd-coredumpctl 2013-05-06 22:49:15 +02:00
src systemd-sleep: add support for freeze and standby 2013-05-06 22:51:57 +02:00
sysctl.d sysctl: default - add safe sysrq options 2013-03-15 19:30:53 +01:00
test test: make it easier to override kernel version 2013-04-24 00:25:04 -04:00
tmpfiles.d Make PrivateTmp dirs also inaccessible from the outside 2013-03-20 14:08:41 -04:00
units units: add an easy-to-use unit template file systemd-nspawn@.service for running containers as system services 2013-04-30 08:36:02 -03:00
.dir-locals.el Keep emacs configuration in one configuration file. 2011-03-08 01:53:46 +01:00
.gitignore bus: add kdbus test case 2013-04-12 00:26:12 +02:00
.mailmap Add a few entries to .mailmap 2013-01-29 21:31:41 -05:00
.vimrc add .vimrc 2012-01-23 04:42:11 +01:00
autogen.sh build-sys: use _FORTIFY_SOURCE only if optimizing 2013-01-11 10:03:16 -05:00
CODING_STYLE analyze: various cleanups 2013-03-08 18:58:08 +01:00
configure.ac build-sys: add --with-debug-shell=PATH 2013-04-25 22:26:58 -04:00
DISTRO_PORTING build-sys: fix spelling of sysvrcndir 2013-01-08 02:37:37 +01:00
introspect.awk build-sys: allow cross-compilation 2010-11-23 22:38:55 +01:00
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
LICENSE.MIT relicense to LGPLv2.1 (with exceptions) 2012-04-12 00:24:39 +02:00
make-directive-index.py man: add various filenames to the index 2013-05-03 01:00:42 -04:00
make-man-index.py build-sys,man: use XML entities to substite strings 2013-03-29 20:30:21 -04:00
make-man-rules.py build-sys,man: use XML entities to substite strings 2013-03-29 20:30:21 -04:00
Makefile-man.am systemd-sleep: add support for freeze and standby 2013-05-06 22:51:57 +02:00
Makefile.am systemd-sleep: add support for freeze and standby 2013-05-06 22:51:57 +02:00
NEWS Update NEWS 2013-04-18 19:59:12 -04:00
README man: use lxml for faster generation and pretty printing 2013-03-09 08:47:50 -05:00
TODO systemd-sleep: add support for freeze and standby 2013-05-06 22:51:57 +02:00
xml_helper.py build-sys: force Python to write UTF-8 2013-03-29 20:30:22 -04:00

systemd System and Service Manager

DETAILS:
        http://0pointer.de/blog/projects/systemd.html

WEB SITE:
        http://www.freedesktop.org/wiki/Software/systemd

GIT:
        git://anongit.freedesktop.org/systemd/systemd
        ssh://git.freedesktop.org/git/systemd/systemd

GITWEB:
        http://cgit.freedesktop.org/systemd/systemd

MAILING LIST:
        http://lists.freedesktop.org/mailman/listinfo/systemd-devel
        http://lists.freedesktop.org/mailman/listinfo/systemd-commits

IRC:
        #systemd on irc.freenode.org

BUG REPORTS:
        https://bugs.freedesktop.org/enter_bug.cgi?product=systemd

AUTHOR:
        Lennart Poettering
        Kay Sievers
        ...and many others

LICENSE:
        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
          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
        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)
        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 building from git you need the following additional dependencies:

        docbook-xsl
        xsltproc
        automake
        autoconf
        libtool
        intltool
        gperf
        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 resolvable
        under all circumstances. In fact, systemd-hostnamed will warn
        if nss-myhostname is not installed.

        Note that D-Bus can link against libsystemd-login.so, which
        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-<target>', with <target>
        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
        proper symlink.

        systemd will warn you during boot if /usr is on a different
        file system than /. While in systemd itself very little will
        break if /usr is on a separate partition many of its
        dependencies very likely will break sooner or later in one
        form or another. For example udev rules tend to refer to
        binaries in /usr, binaries that link to libraries in /usr or
        binaries that refer to data files in /usr. Since these
        breakages are not always directly visible systemd will warn
        about this, since this kind of file system setup is not really
        supported anymore by the basic set of Linux OS components.

        For more information on this issue consult
        http://freedesktop.org/wiki/Software/systemd/separate-usr-is-broken

        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.