Age | Commit message (Collapse) | Author |
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Environment generators
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Why the strange name: the prefix is necessary to follow our own advice that
environment generators should have numerical prefixes. I also put -d- in the
name because otherwise the name was very easy to mistake with
systemd.environment-generator. This additional letter clarifies that this
on special generator that supports environment.d files.
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This most likely means oom, it's better to exit than to run less with
incomplete settings.
CID #714383.
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Check for CID #1368267.
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This adds a unified "copy_flags" parameter to all copy_xyz() function
calls, replacing the various boolean flags so far used. This should make
many invocations more readable as it is clear what behaviour is
precisely requested. This also prepares ground for adding support for
more modes later on.
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Drop the TEST_DATA_DIR macro as this was using alloca() within a
function call which is allegedly unsafe. So add a "suffix" argument to
get_testdata_dir() instead and call that directly.
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Rename get_exe_relative_testdata_dir() to get_testdata_dir() and move
the env var check into that, so that everything interesting happens at
the same place.
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automake helpfully sets a few variables for during build. When our executable
is in a directory underneath $(abs_top_builddir), we know that we're in the
build environment $(abs_top_srcdir) contains the sources, and test data is
under $(abs_top_srcdir)/test. This remains true no matter where the build
directory is relative to the source directory. It also works if the test
executable is invoked as ./test-whatever or .libs/test-whatever, since the
relative path is not used at all.
When running from outside of the build directory, we should be running from the
installed location and we can look for ../testdata relative to the location of
the exe file.
Of course, $SYSTEMD_TEST_DATA always overrides this logic.
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TEST_DIR is rather generic, and we prefix all variables used by installed
executables with "SYSTEMD_".
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When trying to directly run a test executable in the build tree without
setting $TEST_DIR, some tests fail with a non-obvious error message.
Print an useful one instead.
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This was tested on ppc64le. Assume the same is true for ppc64.
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It is useful to package test-* binaries and run them as root under
autopkgtest or manually on particular machines. They currently have a
built-in hardcoded absolute path to their test data, which does not work
when running the test programs from any other path than the original
build directory.
By default, make the tests look for their data in
<test_exe_directory>/testdata/ so that they can be called from any
directory (provided that the corresponding test data is installed
correctly). As we don't have a fixed static path in the build tree (as
build and source tree are independent), set $TEST_DIR with "make check"
to point to <srcdir>/test/, as we previously did with an automake
variable.
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the one we are compiled for (#5272)
It's a difference. Not a big one, but let's be correct here.
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a good number of resolved fixes
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Fixes:
```
src/shared/bus-unit-util.c: In function ‘bus_append_unit_property_assignment’:
src/shared/bus-unit-util.c:570:65: warning: passing argument 2 of ‘namespace_flag_from_string_many’ from incompatible pointer type [-Wincompatible-pointer-types]
r = namespace_flag_from_string_many(eq, &flags);
^
In file included from src/shared/bus-unit-util.c:31:0:
src/shared/nsflags.h:41:5: note: expected ‘long unsigned int *’ but argument is of type ‘uint64_t * {aka long long unsigned int *}’
int namespace_flag_from_string_many(const char *name, unsigned long *ret);
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
```
Closes #5312
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Closes #5313
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a small number of install and unit management related fixes
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this way, we can still call seccomp ourselves, even if seccomp() is
blocked by the filter we are installing.
Fixes: #5300
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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.
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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.
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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
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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.)
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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
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We added mmap() and mmap2(), but forgot munmap(). Fix that.
Pointed out by @lucaswerkmeister:
https://github.com/systemd/systemd/pull/4537#issuecomment-273275298
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Just as a matter of coding style: whenever we return successfully, let's
make sure all our return parameters are properly initialized to
something.
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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.
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After all, most units won't have drop-in dirs, hence there's no point in
logging about that.
Fixes: #5252
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And then show it, to make things a bit friendlier to the user if we fail
acquiring some props.
In fact, this fixes a number of actual bugs, where we used an error
structure for output that we actually never got an error in.
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Add new MountAPIVFS= boolean unit file setting + RootImage=
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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
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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
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Mask individual .wants/.requires symlinks
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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
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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.
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No need to pass what we don't use.
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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
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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.
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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.
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This makes nspawn's logic of automatically discovering the root hash of
an image file generic, and then reuses it in systemd-dissect and in
PID1's RootImage= logic, so that verity is automatically set up whenever
we can.
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directory for a service
This is similar to RootDirectory= but mounts the root file system from a
block device or loopback file instead of another directory.
This reuses the image dissector code now used by nspawn and
gpt-auto-discovery.
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If the dissected image contains symlinks for the mount points we need we
need to make sure to follow this with chase_symlinks() so that we don't
leave the image.
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ReadWritablePaths= work
5327c910d2fc1ae91bd0b891be92b30379c7467b claimed to add support for "+"
for prefixing paths with the configured RootDirectory=. But actually it
only implemented it in the backend, it did not add support for it to the
configuration file parsers. Fix that now.
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conjunction with RootDirectory=
This adds a boolean unit file setting MountAPIVFS=. If set, the three
main API VFS mounts will be mounted for the service. This only has an
effect on RootDirectory=, which it makes a ton times more useful.
(This is basically the /dev + /proc + /sys mounting code posted in the
original #4727, but rebased on current git, and with the automatic logic
replaced by explicit logic controlled by a unit file setting)
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it a NOP
See: #5215
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explicit_bzero was added in glibc 2.25. Make use of it.
explicit_bzero is hardcoded to zero the memory, so string erase now
truncates the string, instead of overwriting it with 'x'. This causes
a visible difference only in the journalctl case.
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(#5230)
https://github.com/systemd/systemd/issues/5215#issuecomment-277156262
libseccomp does not allow you to add architectures to a filter that
doesn't match the byte ordering of the architectures already added to
the filter (it would be a mess, not to mention largely pointless) and
since systemd attempts to add an ABI before removing the default native
ABI, you will always fail on Power (either due to ppc or ppc64le). The
fix is to remove the native ABI before adding a new ABI so you don't run
into problems with byte ordering.
You would likely see the same failure on a MIPS system.
Thanks @pcmoore!
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