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2016-12-01nspawn: use chase_symlinks() on all paths specified via --tmpfs=, --bind= ↵Lennart Poettering
and so on Fixes: #2860
2016-12-01fs-util: add chase_symlinks_prefix() and extend commentsLennart Poettering
chase_symlinks() currently expects a fully qualified, absolute path, relative to the host's root as first argument. Which is useful in many ways, and similar to the paths unlink(), rename(), open(), … expect. Sometimes it's however useful to first prefix the specified path with the specified root directory. Add a new call chase_symlinks_prefix() for this, that is a simple wrapper.
2016-12-01nspawn: coding style: don't mix variable declarations and function callsLennart Poettering
2016-12-01nspawn: use realloc_multiply() where it makes senseLennart Poettering
2016-12-01nspawn: accept --ephemeral --template= as alternative for --ephemeral ↵Lennart Poettering
--directory= As suggested in PR #3667. This PR simply ensures that --template= can be used as alternative to --directory= when --ephemeral is used, following the logic that for ephemeral options the source directory is actually a template. This does not deprecate usage of --directory= with --ephemeral, as I am not convinced the old logic wouldn't make sense. Fixes: #3667
2016-12-01nspawn: properly handle image/directory paths that are symlinksLennart Poettering
This resolves any paths specified on --directory=, --template=, and --image= before using them. This makes sure nspawn can be used correctly on symlinked images and directory trees. Fixes: #2001
2016-12-01tree-wide: stop using canonicalize_file_name(), use chase_symlinks() insteadLennart Poettering
Let's use chase_symlinks() everywhere, and stop using GNU canonicalize_file_name() everywhere. For most cases this should not change behaviour, however increase exposure of our function to get better tested. Most importantly in a few cases (most notably nspawn) it can take the correct root directory into account when chasing symlinks.
2016-12-01core: make unit_free() accept NULL pointersLennart Poettering
We generally try to make our destructors robust regarding NULL pointers, much in the same way as glibc's free(). Do this also for unit_free(). Follow-up for #4748.
2016-11-30hwdb: rename err to r and use _cleanup_ in two more placesZbigniew Jędrzejewski-Szmek
2016-11-30hwdb: simplify error handling in trie_storeZbigniew Jędrzejewski-Szmek
fclose() can also set errno, so the attempts to protect errno that the code made were not successful. Simplify things by immediately saving errno to r.
2016-11-30sd-hwdb: drop caching of search stringZbigniew Jędrzejewski-Szmek
We have only two callers, and for neither this "optimization" is useful. So let's drop it an save some code and a malloc.
2016-11-30hwdb, sd-hwdb: rework priority comparison when loading propertiesZbigniew Jędrzejewski-Szmek
We cannot compare filenames directly, because paths are not sortable lexicographically, e.g. /etc/udev is "later" (has higher priority) than /usr/lib/udev. The on-disk format is changed to have a separate field for "file priority", which is stored when writing the binary file, and then loaded and used in comparisons. For data in the previous format (as generated by systemd 232), this information is not available, and we use a trick where the offset into the string table is used as a proxy for priority. Most of the time strings are stored in the order in which the files were processed. This is not entirely reliable, but is good enough to properly order /usr/lib and /etc/, which are the two most common cases. This hack is included because it allows proper parsing of files until the binary hwdb is regenerated. Instead of adding a new field, I reduced the size of line_number from 64 to 32 bits, and added a 16 bit priority field, and 16 bits of padding. Adding a new field of 16 bytes would significantly screw up alignment and increase file size, and line number realistically don't need more than ~20 bits. Fixes #4750.
2016-11-30hwdb: remove path comparison which broke overriding of propertiesZbigniew Jędrzejewski-Szmek
Partial fix for #4750. We would compare strings like "/usr/lib/udev/hwdb.d/something.hwdb" and "/etc/udev/hwdb.db/something.hwdb" and conclude that the first has higher priority. Since we process files in order (higher priority later), no comparison is necessary when loading. This partially undoes 3a04b789c6f17dff2000a3cdbeaaf86baa604524 (not in spirit, but in the implementation).
2016-11-30systemctl: fix 'is-enabled' exit status on failure when executed in chroot ↵Franck Bui
(#4773)
2016-11-30As per use case we should allow ForwardDelaySec to be set as 0 (#4765)Susant Sahani
So let's set ForwardDelaySec to USEC_INFINITY . Reference: https://wiki.linuxfoundation.org/networking/bridge#does-dhcp-work-overthrough-a-bridge
2016-11-29Two small cleanupsZbigniew Jędrzejewski-Szmek
2016-11-30Merge pull request #4745 from joukewitteveen/notifyEvgeny Vereshchagin
Improvements for notify services (including #4212)
2016-11-29service: new NotifyAccess= value for control processes (#4212)Jouke Witteveen
Setting NotifyAccess=exec allows notifications coming directly from any control process.
2016-11-29bus-util: add protocol error type explanationJouke Witteveen
2016-11-29cgroup: support prefix "-" in cgroups whitelisting entries (#4687)Dongsu Park
So far systemd-nspawn container has been creating files under /run/systemd/inaccessible, no matter whether it's running in user namespace or not. That's fine for regular files, dirs, socks, fifos. However, it's not for block and character devices, because kernel doesn't allow them to be created under user namespace. It results in warnings at booting like that: ==== Couldn't stat device /run/systemd/inaccessible/chr Couldn't stat device /run/systemd/inaccessible/blk ==== Thus we need to have the cgroups whitelisting handler to silently ignore a file, when the device path is prefixed with "-". That's exactly the same convention used in directives like ReadOnlyPaths=. Also insert the prefix "-" to inaccessible entries.
2016-11-29ima: Write the policy filename into IMA's sysfs policy file (#4766)Stefan Berger
IMA validates file signatures based on the security.ima xattr. As of Linux-4.7, instead of copying the IMA policy into the securityfs policy, the IMA policy pathname can be written, allowing the IMA policy file signature to be validated. This patch modifies the existing code to first attempt to write the pathname, but on failure falls back to copying the IMA policy contents.
2016-11-29sd-id128: add new sd_id128_get_machine_app_specific() APILennart Poettering
This adds an API for retrieving an app-specific machine ID to sd-id128. Internally it calculates HMAC-SHA256 with an 128bit app-specific ID as payload and the machine ID as key. (An alternative would have been to use siphash for this, which is also cryptographically strong. However, as it only generates 64bit hashes it's not an obvious choice for generating 128bit IDs.) Fixes: #4667
2016-11-29core: add "khash" API to src/basic/ (as wrapper around kernel AF_ALG)Lennart Poettering
Let's take inspiration from bluez's ELL library, and let's move our cryptographic primitives away from libgcrypt and towards the kernel's AF_ALG cryptographic userspace API. In the long run we should try to remove the dependency on libgcrypt, in favour of using only the kernel's own primitives, however this is unlikely to happen anytime soon, as the kernel does not provide Elliptic Curve APIs to userspace at this time, and we need them for the DNSSEC cryptographic. This commit only covers hashing for now, symmetric encryption/decryption or even asymetric encryption/decryption is not available for now. "khash" is little more than a lightweight wrapper around the kernel's AF_ALG socket API.
2016-11-29service: prevent registering control pids as the main pidJouke Witteveen
We assume a process can be only one of the two in service_sigchld_event.
2016-11-29service: only fail notify services on empty cgroup during startJouke Witteveen
We stay in the SERVICE_START while no READY=1 notification message has been received. When we are in the SERVICE_START_POST state, we have already received a ready notification. Hence we should not fail when the cgroup becomes empty in that state.
2016-11-28Merge pull request #4761 from fsateler/python3Martin Pitt
Explicitly use python3 everywhere
2016-11-28networkd: move event loop handling out of the manager (#4723)Tom Gundersen
This will allow us to have several managers sharing an event loop and running in parallel, as if they were running in separate processes. The long term-aim is to allow networkd to be split into separate processes, so restructure the code to make this simpler. For now we drop the exit-on-idle logic, as this was anyway severely restricted at the moment. Once split, we will revisit this as it may then make more sense again.
2016-11-28Use python3 explicitly in all python scriptsFelipe Sateler
2016-11-28socket-proxyd: Introduced dynamic connection limit via an option. (#4749)(GalaxyMaster)
2016-11-28udevd: check correct return value of fcntl() (#4758)Daniel Wagner
This looks like a copy&paste error from the code block above.
2016-11-27device: Avoid calling unit_free(NULL) in device setup logic (#4748)Dave Reisner
Since a581e45ae8f9bb5c, there's a few function calls to unit_new_for_name which will unit_free on failure. Prior to this commit, a failure would result in calling unit_free with a NULL unit, and hit an assertion failure, seen at least via device_setup_unit: Assertion 'u' failed at src/core/unit.c:519, function unit_free(). Aborting. Fixes #4747 https://bugs.archlinux.org/task/51950
2016-11-27Merge pull request #4736 from dobyrch/calendar-cleanupDjalal Harouni
calendarspec: miscellaneous parsing and formatting fixes
2016-11-25calendarspec: refactor format_chain()Douglas Christman
Factor out repeated references to usec and remove nested ifs.
2016-11-25fix journald startup problem when code is compiled with -DNDEBUG (#4735)Waldemar Brodkorb
Similar to this patch from here: http://systemd-devel.freedesktop.narkive.com/AvfCbi6c/patch-0-3-using-assert-se-on-actions-with-side-effects-on-test-cases If the code is compiled with -DNDEBUG which is the default for some embedded buildsystems, systemd-journald does not startup and silently fails.
2016-11-24calendarspec: rename "eom" to "end_of_month"Douglas Christman
2016-11-24calendarspec: make specifications with ranges reversibleDouglas Christman
"*-*-01..03" is now formatted as "*-*-01..03" instead of "*-*-01,02,03"
2016-11-24calendarspec: allow whole second rangesDouglas Christman
Previously a string like "00:00:01..03" would fail to parse due to the ambiguity between a decimal point and the start of a range.
2016-11-24calendarspec: make specifications with seconds wildcard reversibleDouglas Christman
"*:*:*" is now formatted as "*:*:*" instead of "*:*:00/1"
2016-11-24calendarspec: reject strings with spurious spaces and signsDouglas Christman
strtoul() parses leading whitespace and an optional sign; check that the first character is a digit to prevent odd specifications like "00: 00: 00" and "-00:+00/-1".
2016-11-24calendarspec: reject open weekday rangesDouglas Christman
Forbid open ranges like "Tue.."; trailing commas are still OK.
2016-11-24calendarspec: reject strings that only contain a timezoneDouglas Christman
This makes " UTC" an illegal date specification.
2016-11-24calendarspec: always interpret a missing time as 00:00:00Douglas Christman
"*-*-*" is now equivalent to "*-*-* 00:00:00" (daily) rather than "*-*-* *:*:*" (every second).
2016-11-24core: make sure initrd-switch-root command survives PID1's killing spree (#4730)Franck Bui
This is a different way to implement the fix proposed by commit a4021390fef27f4136497328f suggested by Lennart Poettering. In this patch we instruct PID1 to not kill "systemctl switch-root" command started by initrd-switch-root service using the "argv[0][0]='@'" trick. See: https://www.freedesktop.org/wiki/Software/systemd/RootStorageDaemons/ for more details. We had to backup argv[0] because argv is modified by dispatch_verb().
2016-11-24Merge pull request #4710 from martinpitt/networkd-dbusLennart Poettering
networkd: allow networkd to start in early boot
2016-11-23networkd: handle MTU field in IPv6 RA (#4719)Susant Sahani
This patch handles the custom MTU field in IPv6 RA. fixes RFE #4464
2016-11-23Merge pull request #4703 from dobyrch/calendar-offsetLennart Poettering
calendarspec: add support for scheduling timers at the end of the month
2016-11-23hwdb: use systemd-hwdb instead of obsolete udevadm hwdb (#4722)Michael Biebl
Fixes: #4721
2016-11-23calendarspec: add support for scheduling timers at the end of the monthDouglas Christman
"*-*~1" => The last day of every month "*-02~3..5" => The third, fourth, and fifth last days in February "Mon 05~07/1" => The last Monday in May Resolves #3861
2016-11-23calendarspec: add upper bound on yearDouglas Christman
Stop looking for matches after MAX_YEAR so impossible dates like "*-02-30" and "*-04-31" don't cause an infinite loop.
2016-11-23networkd: set DHCP-acquired timezone and hostname after connecting to D-BusMartin Pitt
If setting the received timezone or transient hostname fails because D-Bus is not (yet) up, store the data in the Manager object and try again after connecting to D-Bus.