timedatectl: clear ADJ_MAXERROR to make sure we keep STA_SYNC set

[elogind.git] / README

diff --git a/README b/README
index b4c474392214651eccb29b153a45cfe440715ccc..ace13cf07587a63d5f4a55583093c0777180cc36 100644 (file)
--- a/README
+++ b/README
@@ -30,8 +30,9 @@ AUTHOR:
 
 LICENSE:
         LGPLv2.1+ for all code
-        - except sd-daemon.[ch] and sd-readahead.[ch] which are MIT
-        - except src/shared/MurmurHash[23].c which is Public Domain
+        - except sd-readahead.[ch] which is MIT
+        - except src/shared/MurmurHash2.c which is Public Domain
+        - except src/shared/siphash24.c which is CC0 Public Domain
         - except src/journal/lookup3.c which is Public Domain
         - except src/udev/* which is (currently still) GPLv2, GPLv2+
 
@@ -46,6 +47,7 @@ REQUIREMENTS:
           CONFIG_NET
           CONFIG_SYSFS
           CONFIG_PROC_FS
+          CONFIG_FHANDLE (libudev, mount and bind mount handling)
 
         Linux kernel >= 3.8 for Smack support
 
@@ -62,9 +64,6 @@ REQUIREMENTS:
         Some udev rules and virtualization detection relies on it:
           CONFIG_DMIID
 
-        Mount and bind mount handling might require it:
-          CONFIG_FHANDLE
-
         Support for some SCSI devices serial number retrieval, to
         create additional symlinks in /dev/disk/ and /dev/tape:
           CONFIG_BLK_DEV_BSG
@@ -90,9 +89,17 @@ REQUIREMENTS:
         runtime using the kernel command line option "audit=0", or
         turn it off at kernel compile time using:
           CONFIG_AUDIT=n
+        If systemd is compiled with libseccomp support on
+        architectures which do not use socketcall() and where seccomp
+        is supported (this effectively means x86-64 and ARM, but
+        excludes 32bit x86!), then nspawn will now install a
+        work-around seccomp filter that makes containers boot even
+        with audit being enabled. This works correctly only on kernels
+        3.14 and newer though. TL;DR: turn audit off, still.
 
         glibc >= 2.14
         libcap
+        libseccomp >= 1.0.0 (optional)
         libblkid >= 2.20 (from util-linux) (optional)
         libkmod >= 15 (optional)
         PAM >= 1.1.2 (optional)
@@ -109,6 +116,8 @@ REQUIREMENTS:
         libpython (optional)
         make, gcc, and similar tools
 
+        To sucessfully use --compat-libs, gcc >= 4.8 seems necessary.
+
         During runtime, you need the following additional
         dependencies:
 
@@ -132,8 +141,8 @@ REQUIREMENTS:
         gperf
         gtkdocize (optional)
         python (optional)
+        python-lxml (optional, but required to build the indices)
         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
@@ -188,6 +197,9 @@ WARNINGS:
         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 a symlink → /run.
+
         For more information on this issue consult
         http://freedesktop.org/wiki/Software/systemd/separate-usr-is-broken