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2017-02-12Merge pull request #5303 from poettering/deleted-unitsZbigniew Jędrzejewski-Szmek
a small number of install and unit management related fixes
2017-02-11networkd: add IPv6ProxyNDPAddress support (#5174)Florian Klink
IPv6 Neighbor discovery proxy is the IPv6 equivalent to proxy ARP for IPv4. It is required when ISPs do not unconditional route IPv6 subnets to their designated target, but expect neighbor solicitation messages for every address on a link. A variable IPv6ProxyNDPAddress= is introduced to the [Network] section, each representing a IPv6 neighbour proxy entry in the neighbour table.
2017-02-10basic/architecture: adjust Risc-V ifdef (#5304)Zbigniew Jędrzejewski-Szmek
https://lists.freedesktop.org/archives/systemd-devel/2017-February/038286.html Let's keep both the old and new for now, so systemd builds correctly in either environment. Later on we should drop the old.
2017-02-10seccomp: order seccomp ABI list, so that our native ABI comes last (#5306)Lennart Poettering
this way, we can still call seccomp ourselves, even if seccomp() is blocked by the filter we are installing. Fixes: #5300
2017-02-10path-lookup: if $HOME can be determined but $XDG_RUNTIME_DIR can't, is itLennart Poettering
So far, if either $HOME or $XDG_RUNTIME_DIR is not set we wouldn't use either, and fail acquire_config_dirs() and acquire_control_dirs() in their entireties. With this change, let's make use of the variables we can acquire, and don't bother with the other. Specifically this means: in both acquire_config_dirs() and acquire_control_dirs() handle ENXIO from user_config_dir() and user_runtime_dir() directly, instead of propagating it up and handling it in the caller.
2017-02-10path-lookup: drop redundant strv_isempty() checkLennart Poettering
If the strv is empty, then strv_extend_strv_concat() is a NOP anyway, and hence there is no reason to guard for this explicitly.
2017-02-10path-lookup: try harder acquiring them $HOME of a userLennart Poettering
Let's use get_home_dir() for figuring out the home directory, so that there's a good chance we succeed figuring out unit locations even if $HOME isn't set. Fixes: #5260
2017-02-10install: never hit assert() when we can't figure out where to write ↵Lennart Poettering
configuration symlinks Under specific circumstances it might happen that we can't figure out where to place our symlinks, for example because we are supposed to create them in the runtime directory but $XDG_RUNTIME_DIR is not set. In this case, return -ENXIO instead of hitting an assert(). (Yeah, the error isn't very descriptive, but for now this should at least be good enough to remove the assert() being hit.)
2017-02-10install: when disabling units, do so even if the unit is missingLennart Poettering
In some cases there might be unit symlinks in .wants/ or .requires/ directories even though the unit is otherwise fully removed. In this case, don't fail removal, but still remove the symlinks. This reworks the symlink marking logic to always add unit files that we are missing to the changes list, but proceed with any symlink removal for them. This way we'll still generate useful hints that a unit is missing if you invoke "systemctl disable idontexist.service", but also still remove any link to it. Fixes: #4995
2017-02-10dbus: check selinux privilege before returning process listLennart Poettering
We protect less interetsing stuff with selinux "status", let's do that here too.
2017-02-09core: make sure to destroy all name watching bus slots when we are kicked ↵Lennart Poettering
off the bus (#5294) Fixes: #4528
2017-02-09seccomp: add forgotten munmap() syscall to @file-system (#5291)Lennart Poettering
We added mmap() and mmap2(), but forgot munmap(). Fix that. Pointed out by @lucaswerkmeister: https://github.com/systemd/systemd/pull/4537#issuecomment-273275298
2017-02-09dbus: permit seeing process list of units whose unit files are missingLennart Poettering
Previously, we'd refuse the GetUnitProcesses() bus call if the unit file couldn't be loaded. Which is wrong, as admins should be able to inspect services whose unit files was deleted. Change this logic, so that we permit introspecting the processes of any unit that is loaded, regardless if it has a unit file or not. (Note that we won't load unit files in GetUnitProcess(), but only operate on already loaded ones. That's because only loaded units can have processes — as that's how our GC logic works — and hence loading the unit just for the process tree is pointless, as it would be empty). See: #4995
2017-02-09dropin: always initialize return parameters on successLennart Poettering
Just as a matter of coding style: whenever we return successfully, let's make sure all our return parameters are properly initialized to something.
2017-02-09dropin: let's reduce duplicate a bitLennart Poettering
After generating the template name we can shortcut things and just call unit_file_find_dirs() from inside itself, just with the new name and save a good number of duplicate lines.
2017-02-09dropin: let's prefer strjoina() over strjoin()Lennart Poettering
2017-02-09dropin: downgrade logging about paths we cannot canonicalizeLennart Poettering
After all, most units won't have drop-in dirs, hence there's no point in logging about that. Fixes: #5252
2017-02-09Merge pull request #5287 from poettering/exit-codesZbigniew Jędrzejewski-Szmek
rework WorkingDirectory= and RootDirectory= management for services
2017-02-09Merge pull request #5255 from poettering/percent-escapeZbigniew Jędrzejewski-Szmek
fstab-generator: Options= applies specifier expansion
2017-02-09execute: set the right exit status for CHDIR vs. CHROOTLennart Poettering
Fixes: #5125
2017-02-09execute: use prefix_roota() where appropriateLennart Poettering
2017-02-09execute: set working directory to /root if User= is not set, but ↵Lennart Poettering
WorkingDirectory=~ is Or actually, try to to do the right thing depending on what is available: - If we know $HOME from User=, then use that. - If the UID for the service is 0, hardcode that WorkingDirectory=~ means WorkingDirectory=/root - In any other case (which will be the unprivileged --user case), use get_home_dir() to find the $HOME of the user we are running as. - Otherwise fail. Fixes: #5246 #5124
2017-02-09Revert "core/execute: set HOME, USER also for root users"Lennart Poettering
This reverts commit 8b89628a10af3863bfc97872912e9da4076a5929. This broke #5246
2017-02-09networkd: add multicast membership to lldp socket (#5282)27o
2017-02-09dhcp-server: always save the ACKed lease address (#5281)27o
2017-02-08Merge pull request #4962 from poettering/root-directory-2Zbigniew Jędrzejewski-Szmek
Add new MountAPIVFS= boolean unit file setting + RootImage=
2017-02-09Merge pull request #5270 from poettering/seccomp-namespace-fixEvgeny Vereshchagin
swap seccomp filter params on s390
2017-02-08seccomp: on s390 the clone() parameters are reversedLennart Poettering
Add a bit of code that tries to get the right parameter order in place for some of the better known architectures, and skips restrict_namespaces for other archs. This also bypasses the test on archs where we don't know the right order. In this case I didn't bother with testing the case where no filter is applied, since that is hopefully just an issue for now, as there's nothing stopping us from supporting more archs, we just need to know which order is right. Fixes: #5241
2017-02-08systemctl: make sure that --now is carried out (#5209)Jan Synacek
When services are already enabled/disabled/masked, make sure that --now still enforces start/stop.
2017-02-08sd-event: "when exiting no signal event are pending" is a wrong assertion ↵Franck Bui
(#5271) The code make the following assertion: when freeing a event loop object (usually it's done after exiting from the main event loop), no signal events are still queued and are pending. This assertion can be found in event_unmask_signal_data() with "assert(!d->current);" assertion. It appears that this assertion can be wrong at least in a specific case described below. Consider the following example which is inspired from udev: a process defines 3 source events: 2 are created by sd_event_add_signal() and 1 is created by sd_event_add_post(). 1. the process receives the 2 signals consecutively so that signal 'A' source event is queued and pending. Consequently the post source event is also queued and pending. This is done by sd_event_wait(). 2. The callback for signal 'A' is called by sd_event_dispatch(). 3. The next call to sd_event_wait() will queue signal 'B' source event. 4. The callback for the post source event is called and calls sd_event_exit(). 5. the event loop is exited. 6. freeing the event loop object will lead to the assertion failure in event_unmask_signal_data(). This patch simply removes this assertion as it doesn't seem to be a bug if the signal data still reference a signal source at this point.
2017-02-08fstab-generator: also convert % → %% for What=Lennart Poettering
Same reasons as the previous patch.
2017-02-08fstab-generator: Options= applies specifier expansionLennart Poettering
Let's document that this is the case, and properly escape % when we generate Options= in the generator. Fixes: #5086
2017-02-08nspawn: Add support for sysroot pivoting (#5258)Philip Withnall
Add a new --pivot-root argument to systemd-nspawn, which specifies a directory to pivot to / inside the container; while the original / is pivoted to another specified directory (if provided). This adds support for booting container images which may contain several bootable sysroots, as is common with OSTree disk images. When these disk images are booted on real hardware, ostree-prepare-root is run in conjunction with sysroot.mount in the initramfs to achieve the same results.
2017-02-08test: Fix a maybe-uninitialised compiler warning (#5269)Philip Withnall
The compiler warning is a false positive, since n_addresses is always initialised on the success path from parse_argv(), but the compiler obviously can’t work that out. Fixes: src/test/test-nss.c:426:9: warning: 'n_addresses' may be used uninitialized in this function [-Wmaybe-uninitialized]
2017-02-08seccomp: MemoryDenyWriteExecute= should affect both mmap() and mmap2() (#5254)Lennart Poettering
On i386 we block the old mmap() call entirely, since we cannot properly filter it. Thankfully it hasn't been used by glibc since quite some time. Fixes: #5240
2017-02-08Merge pull request #5231 from keszybz/mask-wantsLennart Poettering
Mask individual .wants/.requires symlinks
2017-02-07dissect: don't honour NOAUTO flags when looking for ESP (#5224)Lennart Poettering
The flag is originally defined for "basic data partitions", but not for the ESP. We reuse it for the various partitions defined by the Discoverable Partitions Spec, but it isn't defined for the ESP, hence don't check for it. Instead, do check for GPT_FLAG_NO_BLOCK_IO_PROTOCOL, as that flag actually is defined for all partition types, and recommended to use by the UEFI spec. Fixes: #5218
2017-02-07core/load-dropin: add more sanity checks on .wants/.requires symlinksZbigniew Jędrzejewski-Szmek
Feb 04 22:35:42 systemd[1462]: foo.service: Wants dependency dropin /home/zbyszek/.config/systemd/user/foo.service.wants/diffname.service target ../barbar.service has different name Feb 04 22:35:42 systemd[1462]: foo.service: Wants dependency dropin /home/zbyszek/.config/systemd/user/foo.service.wants/wrongname is not a valid unit name, ignoring
2017-02-07core: drop code that is now unusedZbigniew Jędrzejewski-Szmek
2017-02-07core: implement masking of .wants/.requires symlinksZbigniew Jędrzejewski-Szmek
Fixes #1169. Fixes #4830. Example log errors: Feb 04 22:13:28 systemd[1462]: foo.service: Wants dependency on empty_file.service is masked by /home/zbyszek/.config/systemd/user/foo.service.wants/empty_file.service, ignoring Feb 04 22:13:28 systemd[1462]: foo.service: Wants dependency on masked.service is masked by /home/zbyszek/.config/systemd/user/foo.service.wants/masked.service, ignoring
2017-02-07core: when loading .wants and .requires, follow the same logic as .d conf ↵Zbigniew Jędrzejewski-Szmek
dropins Essentially, instead of sequentially adding deps based on all symlinks encountered in .wants and .requires dirs for each name and each unit file load path, iteratate over the load paths and unit names gathering symlinks, then order them based on priority, and then iterate over the final list, adding dependencies. This patch doesn't change the logic too much, except that the order in which dependencies are applied might be different. It wasn't defined before, so that not really a change. Adding filtering on the symlinks is left for later patches.
2017-02-07basic/dirent-util: allow suffix to be omitted for dirent_is_file_with_suffixZbigniew Jędrzejewski-Szmek
2017-02-07Merge pull request #5263 from poettering/install-aliasZbigniew Jędrzejewski-Szmek
2017-02-07Revert "fix handling of templates instantiated in /usr/lib (#5263)"Zbigniew Jędrzejewski-Szmek
This reverts commit 0698b674920aa8a56dbd6a625729a35e5ae9c5df. It was supposed to be merged, not squashed.
2017-02-07fix handling of templates instantiated in /usr/lib (#5263)Lennart Poettering
Fix handling of templates instantiated in /usr/lib. All work to fix #5136.
2017-02-07Merge pull request #5219 from poettering/run-size-checkZbigniew Jędrzejewski-Szmek
before reloading, check that /run/systemd has enough space
2017-02-07install: remove some unused parameters from various functions in install.cLennart Poettering
No need to pass what we don't use.
2017-02-07install: when a template unit is instantiated via a /usr symlink, consider ↵Lennart Poettering
it enabled If a unit foobar@.service stored below /usr is instantiated via a symlink foobar@quux.service also below /usr, then we should consider the instance statically enabled, while the template itself should continue to be considered enabled/disabled/static depending on its [Install] section. In order to implement this we'll now look for enablement symlinks in all unit search paths, not just in the config and runtime dirs. Fixes: #5136
2017-02-07install: don't enter loop when traversing a template symlinksLennart Poettering
Before this patch, if we'd encounter an instance or template symlink while traversing a chain of symlinks we'd fill in the instance name and retry the iteration. This makes no sense if the resulting name is actually the same as we are coming from, as we'd just spin a couple of times in the loop, until the UNIT_FILE_FOLLOW_SYMLINK_MAX iteration limit is hit. Fix this, by accepted the symlink as it is, if it identical to what we filled in.
2017-02-07dissect: try to read roothash value off user.verity.roothash xattr of image fileLennart Poettering
This slightly extends the roothash loading logic to first check for a user.verity.roothash extended attribute on the image file. If it exists, it is used as Verity root hash and the ".roothash" file is not used. This should improve the chance that the roothash is retained when the file is moved around, as the data snippet is attached directly to the image file. The field is still detached from the file payload however, in order to make sure it may be trusted independently. This does not replace the ".roothash" file loading, it simply adds a second way to retrieve the data. Extended attributes are often a poor choice for storing metadata like this as it is usually difficult to discover for admins and users, and hard to fix if it ever gets out of sync. However, in this case I think it's safe as verity implies read-only access, and thus there's little chance of it to get out of sync.