tree-wide: remove Emacs lines from all files This should be handled fine now by .dir-locals.el, so need to carry that stuff in every file.

test-journal-send: add tests for sendv Also, check the return value of all calls. They are documented to return 0, even if journald is not listening.

test-journal-send: no need to set log level We only use the public api here, so don't include log.h.

util-lib: split out fd-related operations into fd-util.[ch] There are more than enough to deserve their own .c file, hence move them over.

Always prefer our headers to system headers In practice this shouldn't make much difference, but sometimes our headers might be newer, and we want to test them.

journal: reduce test-journal-send timeout from 10s to 1s The sleep(10) in test-journal-send is quite aggressive. We need it only for the journal to get our cgroup information. But even that information is not vital to the test, so a sleep(1) should be just fine.

test: extend test-send to send some weirder data

journal: properly serialize fields with multiple values into JSON This now matches the JSON serialization spec from: http://www.freedesktop.org/wiki/Software/systemd/json

journald: only accept fds from certain directories

journal: add sd_journal_perror() to API

journal: beef up journal matches considerably we now can take multiple matches, and they will apply as AND if they apply to different fields and OR if they apply to the same fields. Also, terms of this kind can be combined with an overreaching OR.

relicense to LGPLv2.1 (with exceptions) 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.

journal: implicitly add code location to all messages logged with the native interface This logic can be turned off by defining SD_JOURNAL_SUPPRESS_LOCATION before including sd-journal.h. This also saves/restores errno in all logging functions, in order to be useful as logging calls without side-effects. This also adds a couple of __unlikely__ around the early checks in the logging calls, in order to minimize the runtime impact.