This was premarily intended to support the LSB facility $httpd which is
only known by Fedora, and a bad idea since it lacks any real-life
usecase.
Similar, drop support for some other old Fedora-specific facilities.
Also, document the rules for introduction of new facilities, to clarify
the situation for the future.
Network file systems generally do not offer inotify() that would work
across the network. We hence cannot rely on inotify() exclusiely in
those case. Provide an API to determine these cases, and suggest doing
manual regular rechecks.
Note that this is not complete yet, as we need to rescan journal dirs on
network file systems explicitly to find new/removed files
When traversing entry array chains for a bisection or for retrieving an
item by index we previously always started at the beginning of the
chain. Since we tend to look at the same chains repeatedly, let's cache
where we have been the last time, and maybe we can skip ahead with this
the next time.
This turns most bisections and index lookups from O(log(n)*log(n)) into
O(log(n)). More importantly however, we seek around on disk much less,
which is good to reduce buffer cache and seek times on rotational disks.
'systemd-coredumpctl' will list available coredumps:
PID UID GID sig exe
32452 500 500 11 /home/zbyszek/systemd/build/journalctl
32666 500 500 11 /usr/lib64/valgrind/memcheck-amd64-linux
...
'systemd-coredumpctl dump PID' will write the coredump
to specified file or stdout.
The new 'unique' API allows listing all unique field values that a field
specified by a field name can take in all entries of the journal. This
allows answering queries such as "What units logged to the journal?",
"What hosts have logged into the journal?", "Which boot IDs have logged
into the journal?".
Ultimately this allows implementation of tools similar to lastlog based
on journal data.
Note that listing these field values will not work for journal files
created with older journald, as the field values are not indexed in
older files.
On systemd systems seasoned admins might be surprised to see that the
init scripts and log files are gone. To ease the transition let's place
some README files there, that hopefully help clearing up the situation.
Much like logind has a client in loginctl, and journald in journalctl
introduce timedatectl, to change the system time (incl. RTC), timezones
and related settings.
Valgrind says:
==29176== Conditional jump or move depends on uninitialised value(s)
==29176== at 0x412A85: cunescape_length_with_prefix (util.c:1565)
==29176== by 0x40B351: dev_kmsg_record (journald-kmsg.c:301)
==29176== by 0x40B653: server_read_dev_kmsg (journald-kmsg.c:347)
==29176== by 0x40B701: server_flush_dev_kmsg (journald-kmsg.c:365)
==29176== by 0x409DE7: main (journald.c:1535)
No longer override the default kernel font if nothing is specified in
vconsole.conf.
The default kernel font[0] provides ISO-8859-1 and box characters. Users
of Arabic, Cyrilic or Hebrew must set a different font manually as these
character sets were provided by the old default font [1], but are not
any longer.
Rationale:
* it is counter-intuitive that an empty vconsole.conf file is different
from adding FONT="";
* the version of the default font shipped with Arch (which is the
upstream one) behaves very badly during early boot[2] (which should
admittedly be fixed in the font itself);
* the kernel already supplies a default font, it seems reasonable to
use that unless anything else is specified;
* This also avoids a needless slow call to setfont; and
* We don't want to work around problems in the kernel (in case the
compiled-in font is not acceptable for whatever reason).
[0]: <https://dev.archlinux.org/~tomegun/kernel.bdf>
[1]: <https://dev.archlinux.org/~tomegun/latarcyrheb.bdf>
[2]: <http://i.imgur.com/J2tM4.jpg>
As audit is pretty much just a special kind of logging we should treat
it similar, and manage the audit fd in a static variable.
This simplifies the audit fd sharing with the SELinux access checking
code quite a bit.
a) Instead of parsing the bus messages inside of selinux-access.c
simply pass everything pre-parsed in the functions
b) implement the access checking with a macro that resolves to nothing
on non-selinux builds
c) split out the selinux checks into their own sources
selinux-util.[ch]
d) this unifies the job creation code behind the D-Bus calls
Manager.StartUnit() and Unit.Start().
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/
Instead of doing hand optimized fd bisect arrays just use plain old
hashmaps. Now I can understand my own code again. Yay!
As a side effect this should fix some bad memory accesses caused by
accesses after mmap(), introduced in 189.
Lennart Poettering
