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The recently added stacktrace support in 8d4e028f uses functions added
in elfutils 158. Check for one of the new functions to avoid attempting
to build against older versions.
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We used to check if e.g. IFLA_BOND_MAX is defined and provide fallback
values in missing.h is it wasn't. But over time, various kernel
versions added IFLA_* defines, so checking for IFLA_BOND_MAX is not
enough if the kernel is new enough to have some of them but too old to
have all. In case we detect that the latest known enum value is
missing, #define most of them.
https://bugs.freedesktop.org/show_bug.cgi?id=80095
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Be verbose when checking if Python module lxml is available. Also warn that
Python support will be disabled when the lxml module is not present.
Fixes: https://bugs.freedesktop.org/show_bug.cgi?id=80005
Tested:
- Without python-lxml package installed:
$ ./configure
checking for python extension module directory... ${exec_prefix}/lib64/python2.7/site-packages
checking for python lxml module... no
configure: WARNING: *** python support requires python-xml module installed
- With python-lxml package installed:
$ ./configure
checking for python extension module directory... ${exec_prefix}/lib64/python2.7/site-packages
checking for python lxml module... yes
checking for PYTHON_DEVEL... yes
...
Python: yes
Python Headers: yes
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elfutils' libdw is maintained, can read DWARF debug data and appears to
be the library of choice for generating backtraces today.
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When the user specifies --with-tty-gid= then we should honour that and
write it to the snippet, too.
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static files
systemd-sysusers is a tool to reconstruct /etc/passwd and /etc/group
from static definition files that take a lot of inspiration from
tmpfiles snippets. These snippets should carry information about system
users only. To make sure it is not misused for normal users these
snippets only allow configuring UID and gecos field for each user, but
do not allow configuration of the home directory or shell, which is
necessary for real login users.
The purpose of this tool is to enable state-less systems that can
populate /etc with the minimal files necessary, solely from static data
in /usr. systemd-sysuser is additive only, and will never override
existing users.
This tool will create these files directly, and not via some user
database abtsraction layer. This is appropriate as this tool is supposed
to run really early at boot, and is only useful for creating system
users, and system users cannot be stored in remote databases anyway.
The tool is also useful to be invoked from RPM scriptlets, instead of
useradd. This allows moving from imperative user descriptions in RPM to
declarative descriptions.
The UID/GID for a user/group to be created can either be chosen dynamic,
or fixed, or be read from the owner of a file in the file system, in
order to support reconstructing the correct IDs for files that shall be
owned by them.
This also adds a minimal user definition file, that should be
sufficient for most basic systems. Distributions are expected to patch
these files and augment the contents, for example with fixed UIDs for
the users where that's necessary.
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systemd fails to build (symbols not found/resolved during cgls link step)
under gcc-4.9.0 due to link-time optimization (lto) changes, in particular
from gcc-4.9.0/NEWS:
+ When using a linker plugin, compiling with the -flto option
now generates slim objects files (.o) which only contain
intermediate language representation for LTO. Use
-ffat-lto-objects to create files which contain additionally
the object code. To generate static libraries suitable for LTO
processing, use gcc-ar and gcc-ranlib; to list symbols from a
slim object file use gcc-nm. (Requires that ar, ranlib and nm
have been compiled with plugin support.)
Both -flto and -ffat-lto-objects are now needed when building and linking
against static libs w/LTO.
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Reported by Samuli Suominen.
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Instead of accessing /proc/1/environ directly, trying to read the
$container variable from it, let's make PID 1 save the contents of that
variable to /run/systemd/container. This allows us to detect containers
without the need for CAP_SYS_PTRACE, which allows us to drop it from a
number of daemons and from the file capabilities of systemd-detect-virt.
Also, don't consider chroot a container technology anymore. After all,
we don't consider file system namespaces container technology anymore,
and hence chroot() should be considered a container even less.
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We shouldn't destroy IPC objects of system users on logout.
http://lists.freedesktop.org/archives/systemd-devel/2014-April/018373.html
This introduces SYSTEM_UID_MAX defined to the maximum UID of system
users. This value is determined compile-time, either as configure switch
or from /etc/login.defs. (We don't read that file at runtime, since this
is really a choice for a system builder, not the end user.)
While we are at it we then also update journald to use SYSTEM_UID_MAX
when we decide whether to split out log data for a specific client.
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Also remove the equivalent functionality from networkd.
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Similarly to NTP servers, this can be set at compile-time.
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- Add KMOD_CFLAGS and KMOD_LIBS where appropiate
- networkd now requires kmod. make --disable-kmod --enable-networkd
to raise an error.
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No functional change expected :)
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release time
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Also, allow compiling in a default server list via a configure command
line item.
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--enable-undefined-sanitizer mirrors --enable-memory-sanitizer.
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tcpwrap is legacy code, that is barely maintained upstream. It's APIs
are awful, and the feature set it exposes (such as DNS and IDENT
access control) questionnable. We should not support this natively in
systemd.
Hence, let's remove the code. If people want to continue making use of
this, they can do so by plugging in "tcpd" for the processes they start.
With that scheme things are as well or badly supported as they were from
traditional inetd, hence no functionality is really lost.
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https://bugs.freedesktop.org/show_bug.cgi?id=76335
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MHD_USE_EPOLL_LINUX_ONLY, MHD_USE_DUAL_STACK are only available in
next-but-last release.
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If --trust=ca.crt is used, only clients presenting certificates signed
by the ca will be allowed to proceed. No hostname matching is
performed, so any client wielding a signed certificate will be
authorized.
Error functions are moved from journal-gateway to microhttp-util and
made non-static, since now they are used in two source files.
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some systems still make the distiction between bin and sbin.
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This way each user allocates from his own pool, with its own size limit.
This puts the size limit by default to 10% of the physical RAM size but
makes it configurable in logind.conf.
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The release tarballs ship with pre-generated man pages, so we do not
need xsltproc for a typical end-user build.
Developers will probably have xsltproc anyway, but if not they will now
encounter a build-time failure instead of an error in configure.
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This permit to switch to a specific apparmor profile when starting a daemon. This
will result in a non operation if apparmor is disabled.
It also add a new build requirement on libapparmor for using this feature.
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We do a lot of these casts, and they are all OK, so let's get rid of the
warning, to make things quieter.
http://lists.freedesktop.org/archives/systemd-devel/2014-February/017174.html
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Debian Stable is still using glibc 2.13, which doesn't provide the setns().
So we detect this and provide a tiny wrapper that issues the setns syscall
towards the kernel.
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- Allow configuration of an errno error to return from blacklisted
syscalls, instead of immediately terminating a process.
- Fix parsing logic when libseccomp support is turned off
- Only keep the actual syscall set in the ExecContext, and generate the
string version only on demand.
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