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.
gold doesn't exhibit the problems with linking of compatibility
libraries.
It is also slightly faster:
make clean && make -j5 bfd gold
real 34.885s 33.707s
user 34.486s 32.189s
sys 9.929s 10.845s
real 35.128s 33.508s
user 34.660s 31.858s
sys 10.798s 10.341s
real 35.405s 33.748s
user 34.765s 32.384s
sys 11.635s 10.998s
real 35.250s 33.795s
user 34.704s 32.253s
sys 11.220s 11.469s
touch src/libsystemd/sd-bus.c && make -j5
bfd gold
real 10.224s 9.030s
user 11.664s 9.877s
sys 3.431s 2.878s
real 10.021s 9.165s
user 11.526s 9.990s
sys 3.061s 3.015s
real 10.233s 8.961s
user 11.657s 9.973s
sys 3.467s 2.202s
real 10.160s 9.086s
user 11.637s 9.950s
sys 3.188s 2.859s
Let's try to standardize on a single non-cryptographic hash algorithm,
and for that SipHash appears to be the best answer.
With this change there are two other hash functions left in systemd: an
older version of MurmurHash embedded into libudev for the bloom filters
in udev messages (which is hard to update, given that the we probably
should stay compatible with older versions of the library). And lookup3
in the journal files (which we could replace for new files, but which is
probably not worth the work).
* library support for setns() system call was added to glibc
version 2.14 (setns() call is use in src/machine/machinectl.c
and src/libsystemd-bus-container.c)
* utf8 validation call are already exported (via sd-utf8.c file) -
commit - 369c583b3f
SMACK is the Simple Mandatory Access Control Kernel, a minimal
approach to Access Control implemented as a kernel LSM.
The kernel exposes the smackfs filesystem API through which access
rules can be loaded. At boot time, we want to load the access rules
as early as possible to ensure all early boot steps are checked by Smack.
This patch mounts smackfs at the new location at /sys/fs/smackfs for
kernels 3.8 and above. The /smack mountpoint is not supported.
After mounting smackfs, rules are loaded from the usual location.
For more information about Smack see:
http://www.kernel.org/doc/Documentation/security/Smack.txt
Previously all journal files were owned by "adm". In order to allow
specific users to read the journal files without granting it access to
the full "adm" powers, introduce a new specific group for this.
"systemd-journal" has to be created by the packaging scripts manually at
installation time. It's a good idea to assign a static UID/GID to this
group, since /var/log/journal might be shared across machines via NFS.
This commit also grants read access to the journal files by default to
members of the "wheel" and "adm" groups via file system ACLs, since
these "almost-root" groups should be able to see what's going on on the
system. These ACLs are created by "make install". Packagers probably
need to duplicate this logic in their postinst scripts.
This also adds documentation how to grant access to the journal to
additional users or groups via fs ACLs.
This minimal HTTP server can serve journal data via HTTP. Its primary
purpose is synchronization of journal data across the network. It serves
journal data in three formats:
text/plain: the text format known from /var/log/messages
application/json: the journal entries formatted as JSON
application/vnd.fdo.journal: the binary export format of the journal
The HTTP server also serves a small HTML5 app that makes use of the JSON
serialization to present the journal data to the user.
Examples:
This downloads the journal in text format:
# systemctl start systemd-journal-gatewayd.service
# wget http://localhost:19531/entries
Same for JSON:
# curl -H"Accept: application/json" http://localhost:19531/entries
Access via web browser:
$ firefox http://localhost:19531/
We finally got the OK from all contributors with non-trivial commits to
relicense systemd from GPL2+ to LGPL2.1+.
Some udev bits continue to be GPL2+ for now, but we are looking into
relicensing them too, to allow free copy/paste of all code within
systemd.
The bits that used to be MIT continue to be MIT.
The big benefit of the relicensing is that closed source code may now
link against libsystemd-login.so and friends.
Ronny Chevalier