X-Git-Url: http://git.ipfire.org/?a=blobdiff_plain;f=README;h=419f0adb739c38ddc7df80541b637fb07d4fe260;hb=6f520e74373a7f2cf7cb36ca8cf2d61fee88dc49;hp=835763dca84451c89c3fb3a11f75731509982f43;hpb=d79a2f5fabaf91521bdf425a7ffd1a71b6acc24d;p=thirdparty%2Fsystemd.git diff --git a/README b/README index 835763dca84..419f0adb739 100644 --- a/README +++ b/README @@ -69,11 +69,10 @@ REQUIREMENTS: create additional symlinks in /dev/disk/ and /dev/tape: CONFIG_BLK_DEV_BSG - Required for PrivateNetwork= and PrivateDevices= in service units: + Required for PrivateNetwork= in service units: CONFIG_NET_NS - CONFIG_DEVPTS_MULTIPLE_INSTANCES Note that systemd-localed.service and other systemd units use - PrivateNetwork and PrivateDevices so this is effectively required. + PrivateNetwork so this is effectively required. Required for PrivateUsers= in service units: CONFIG_USER_NS @@ -82,7 +81,7 @@ REQUIREMENTS: CONFIG_IPV6 CONFIG_AUTOFS4_FS CONFIG_TMPFS_XATTR - CONFIG_{TMPFS,EXT4,XFS,BTRFS_FS,...}_POSIX_ACL + CONFIG_{TMPFS,EXT4_FS,XFS,BTRFS_FS,...}_POSIX_ACL CONFIG_SECCOMP CONFIG_SECCOMP_FILTER (required for seccomp support) CONFIG_CHECKPOINT_RESTORE (for the kcmp() syscall) @@ -94,6 +93,10 @@ REQUIREMENTS: Required for CPUQuota= in resource control unit settings CONFIG_CFS_BANDWIDTH + Required for IPAddressDeny= and IPAddressAllow= in resource control + unit settings + CONFIG_CGROUP_BPF + For UEFI systems: CONFIG_EFIVAR_FS CONFIG_EFI_PARTITION @@ -115,6 +118,9 @@ REQUIREMENTS: isn't. The next best thing is to make this change through a modprobe.d drop-in. This is shipped by default, see modprobe.d/systemd.conf. + Required for systemd-nspawn: + CONFIG_DEVPTS_MULTIPLE_INSTANCES or Linux kernel >= 4.7 + Note that kernel auditing is broken when used with systemd's container code. When using systemd in conjunction with containers, please make sure to either turn off auditing at @@ -142,12 +148,14 @@ REQUIREMENTS: libacl (optional) libselinux (optional) liblzma (optional) - liblz4 >= 119 (optional) + liblz4 >= 1.3.0 / 130 (optional) libgcrypt (optional) libqrencode (optional) libmicrohttpd (optional) libpython (optional) libidn2 or libidn (optional) + gnutls >= 3.1.4 (optional, >= 3.5.3 is required to support DNS-over-TLS with gnutls) + openssl >= 1.1.0 (optional, required to support DNS-over-TLS with openssl) elfutils >= 158 (optional) polkit (optional) pkg-config @@ -155,7 +163,9 @@ REQUIREMENTS: docbook-xsl (optional, required for documentation) xsltproc (optional, required for documentation) python-lxml (optional, required to build the indices) - python, meson, ninja + python >= 3.5 + meson >= 0.46 (>= 0.49 is required to build position-independent executables) + ninja gcc, awk, sed, grep, m4, and similar tools During runtime, you need the following additional @@ -166,7 +176,7 @@ REQUIREMENTS: NOTE: If using dbus < 1.9.18, you should override the default policy directory (--with-dbuspolicydir=/etc/dbus-1/system.d). dracut (optional) - PolicyKit (optional) + polkit (optional) To build in directory build/: meson build/ && ninja -C build @@ -193,6 +203,18 @@ REQUIREMENTS: under all circumstances. In fact, systemd-hostnamed will warn if nss-myhostname is not installed. + nss-systemd must be enabled on systemd systems, as that's required for + DynamicUser= to work. Note that we ship services out-of-the-box that + make use of DynamicUser= now, hence enabling nss-systemd is not + optional. + + Note that the build prefix for systemd must be /usr. (Moreover, + packages systemd relies on — such as D-Bus — really should use the same + prefix, otherwise you are on your own.) -Dsplit-usr=false (which is the + default and does not need to be specified) is the recommended setting, + and -Dsplit-usr=true should be used on systems which have /usr on a + separate partition. + Additional packages are necessary to run some tests: - busybox (used by test/TEST-13-NSPAWN-SMOKE) - nc (used by test/TEST-12-ISSUE-3171) @@ -207,7 +229,7 @@ USERS AND GROUPS: even in the very early boot stages, where no other databases and network are available: - audio, cdrom, dialout, disk, input, kmem, lp, tape, tty, video + audio, cdrom, dialout, disk, input, kmem, kvm, lp, render, tape, tty, video During runtime, the journal daemon requires the "systemd-journal" system group to exist. New journal files will @@ -216,14 +238,11 @@ USERS AND GROUPS: groups "wheel" and "adm" will be given read-only access to journal files using systemd-tmpfiles.service. - The journal gateway daemon requires the - "systemd-journal-gateway" system user and group to + The journal remote daemon requires the + "systemd-journal-remote" system user and group to exist. During execution this network facing service will drop privileges and assume this uid/gid for security reasons. - Similarly, the NTP daemon requires the "systemd-timesync" system - user and group to exist. - Similarly, the network management daemon requires the "systemd-network" system user and group to exist. @@ -259,7 +278,7 @@ NSS: passwd: compat mymachines systemd group: compat mymachines systemd - hosts: files mymachines resolve myhostname + hosts: files mymachines resolve [!UNAVAIL=return] dns myhostname SYSV INIT.D SCRIPTS: When calling "systemctl enable/disable/is-enabled" on a unit which is a @@ -273,16 +292,16 @@ SYSV INIT.D SCRIPTS: needs to look like, and provide an implementation at the marked places. WARNINGS: - 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. + systemd will warn during early boot if /usr is not already mounted at + this point (that means: either located on the same file system as / or + already mounted in the initrd). While in systemd itself very little + will break if /usr is on a separate, late-mounted 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. systemd requires that the /run mount point exists. systemd also requires that /var/run is a symlink to /run. @@ -290,13 +309,23 @@ WARNINGS: For more information on this issue consult https://www.freedesktop.org/wiki/Software/systemd/separate-usr-is-broken - To run systemd under valgrind, compile with VALGRIND defined - (e.g. CPPFLAGS='... -DVALGRIND=1' meson ) and have valgrind - development headers installed (i.e. valgrind-devel or - equivalent). Otherwise, false positives will be triggered by code which - violates some rules but is actually safe. Note that valgrind generates - nice output only on exit(), hence on shutdown we don't execve() - systemd-shutdown. + To run systemd under valgrind, compile with meson option + -Dvalgrind=true and have valgrind development headers installed + (i.e. valgrind-devel or equivalent). Otherwise, false positives will be + triggered by code which violates some rules but is actually safe. Note + that valgrind generates nice output only on exit(), hence on shutdown + we don't execve() systemd-shutdown. + +STABLE BRANCHES AND BACKPORTS + + Stable branches with backported patches are available in the + systemd-stable repo at https://github.com/systemd/systemd-stable. + + Stable branches are started for certain releases of systemd and named + after them, e.g. v238-stable. Stable branches are managed by + distribution maintainers on an as needed basis. See + https://www.freedesktop.org/wiki/Software/systemd/Backports/ for some + more information and examples. 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