nspawn: when resoliving UIDs/GIDs for "-u", do so in forked off /usr/bin/getent inste...

[elogind.git] / README

diff --git a/README b/README
index 2321849356deca65065614935614e5a473eb9462..7a227e7327f0bbf12c9c99a330cbf8f1bd5a683e 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/MurmurHash3.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+
 
@@ -45,6 +46,8 @@ REQUIREMENTS:
           CONFIG_EPOLL
           CONFIG_NET
           CONFIG_SYSFS
+          CONFIG_PROC_FS
+          CONFIG_FHANDLE (libudev, mount and bind mount handling)
 
         Linux kernel >= 3.8 for Smack support
 
@@ -61,9 +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
@@ -75,9 +75,7 @@ REQUIREMENTS:
           CONFIG_TMPFS_XATTR
           CONFIG_SECCOMP
 
-        For systemd-bootchart, a kernel with procfs support and
-        several proc output options enabled is required:
-          CONFIG_PROC_FS
+        For systemd-bootchart, several proc debug interfaces are required:
           CONFIG_SCHEDSTATS
           CONFIG_SCHED_DEBUG
 
@@ -92,8 +90,9 @@ REQUIREMENTS:
         turn it off at kernel compile time using:
           CONFIG_AUDIT=n
 
-        dbus >= 1.4.0
+        glibc >= 2.14
         libcap
+        libseccomp >= 1.0.0 (optional)
         libblkid >= 2.20 (from util-linux) (optional)
         libkmod >= 15 (optional)
         PAM >= 1.1.2 (optional)
@@ -110,11 +109,16 @@ 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:
 
-        util-linux >= v2.19 (requires fsck -l, agetty -s)
-        sulogin (from util-linux >= 2.22 or sysvinit-tools, optional but recommended)
+        util-linux >= v2.19 (requires fsck -l, agetty -s),
+                      v2.21 required for tests in test/
+        dbus >= 1.4.0 (strictly speaking optional, but recommended)
+        sulogin (from util-linux >= 2.22 or sysvinit-tools, optional but recommended,
+                 required for tests in test/)
         dracut (optional)
         PolicyKit (optional)
 
@@ -130,8 +134,8 @@ 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
@@ -139,11 +143,6 @@ REQUIREMENTS:
         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>
@@ -191,6 +190,9 @@ 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