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local-fs-pre.target is a passive unit, which means that it is supposed to be
pulled in by everything that is ordered before it. We had
Before=local-fs-pre.target, so add Wants= too.
I don't expect this to change anything. Instead, just make things follow the
docs so it's easier to reason about the dependency set.
If this module is loaded, sending readiness notifications from the
VM will fail with "no route to host" so let's blacklist the module
to prevent that from happening.
By default, label_ops is initialized with a NULL pointer which translates
to noop labelling operations. In mac_selinux_init() and the new mac_smack_init(),
we initialize label_ops with a MAC specific LabelOps pointer.
We also introduce mac_init() to initialize any configured MACs and replace all
usages of mac_selinux_init() with mac_init().
All users of loopback_setup() ignore the return values (with the notable
exception of the test cases). Hence let's adjust the log messaging to
always log at LOG_WARNING level at most, and suffix messages with ",
ignoring", to make clear these failures are ignored.
Previously, unprivileged mode for find_esp_and_warn() and
find_xbootldr_and_warn() could be enabled or disabled. With this change
it can also be set to negative in which case the functions will enable
it automatically if found to be executing without privileges.
This just moves te geteuid() check we often do for the param inside of
the functions.
At the same time internally in the functions we also pass around the
VerifyESPFlags field across the various functions instead of booleans.
Both changes are just refactoring. No changes in behaviour.
In b6033b7060 support was added to create
{/etc|/run}/credstore{|.encrypted} via tmpfiles.d with perms 0000. These
perms are so restrictive that not even root can access them unless it
has CAP_DAC_OVERRIDE capability. This is creates the dirs at boot time
In 24039e1207 support was added to create
/etc/credstore with perm 0700 from meson.build at build time.
This patch makes unifies the two parts:
1. creates both /etc/credstore *and* /etc/credstore.encrypted in both
places (the build system still won't create them in /run/, since
that's pointless since not shipped, and the runtime won't create the
dirs below /usr/lib/, since that's not generically writable anyway).
2. Both at runtime and at build time we'll create the dirs with mode
0700. This is easier for packaging tools to handle since they
generally react pretty negatively on dirs they can't enumerate.
To appease the LTO overlords:
In file included from ../../../../src/basic/macro.h:446,
from ../../../../src/shared/blockdev-util.h:8,
from ../../../../src/shared/creds-util.c:11:
../../../../src/shared/creds-util.c: In function 'get_credential_host_secret':
../../../../src/shared/creds-util.c:379:52: error: '%s' directive argument is null [-Werror=format-overflow=]
379 | log_debug_errno(r, "Credential secret %s/%s appeared while we were creating it, rereading.",
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
../../../../src/basic/log.h:214:86: note: in definition of macro 'log_full_errno_zerook'
214 | ? log_internal(_level, _e, PROJECT_FILE, __LINE__, __func__, __VA_ARGS__) \
| ^~~~~~~~~~~
../../../../src/basic/log.h:250:41: note: in expansion of macro 'log_full_errno'
250 | #define log_debug_errno(error, ...) log_full_errno(LOG_DEBUG, error, __VA_ARGS__)
| ^~~~~~~~~~~~~~
../../../../src/shared/creds-util.c:379:33: note: in expansion of macro 'log_debug_errno'
379 | log_debug_errno(r, "Credential secret %s/%s appeared while we were creating it, rereading.",
| ^~~~~~~~~~~~~~~
../../../../src/shared/creds-util.c:379:74: note: format string is defined here
379 | log_debug_errno(r, "Credential secret %s/%s appeared while we were creating it, rereading.",
| ^~
cc1: some warnings being treated as errors
../../../../src/core/transaction.c: In function 'transaction_verify_order_one':
../../../../src/core/transaction.c:338:38: error: '%s' directive argument is null [-Werror=format-overflow=]
338 | sprintf(ans + size, "%s%s", unit_log_field, *unit_id);
| ^~
cc1: some warnings being treated as errors
Containers generally don't have permission to mknod() which is
required by test-udev so let's skip the test as well if we detect
we're running in a container.
Currently, ExcludeFiles= supports excluding directories on the host
from being copied. Let's extend this to also support preventing files
from being copied into specific directories in the partition by adding
a new option ExcludeFilesTarget=. An example where this is useful is
when setting up btrfs subvolumes in the top level that are intended to
be mounted into specific locations, so /usr would be stored in @usr,
/home in @home, .... To accomplish this, we need to copy /usr to @usr
and prevent any files from being copied into /usr in the partition,
which with this commit, we'd be able to do as follows:
```
[Partition]
CopyFiles=/usr:@usr
ExcludeFilesTarget=/usr
```
The kernel may be syncing a file system or doing something else that requires
more time. So make the delay a bit longer, but provide some feedback and also
grow the delay exponentially (though with a long exponent). If the kernel is
doing something else, no need to repeat so often. With 38 attempts, we get a
total of slightly above 5000 ms.
I wrote this when I thought that the the delay is not long enough. It turned
out that we were blocking the file system on the loop device, so waiting longer
wasn't helpful. But I think it's nicer to do it this way anyway.
The man page is reference documentation, so we shouldn't write too much
duplicate things here, but we can make the text a bit more approachable. This
rewords and extends the documentation as requested and suggested in #24231 and
adds some hints for the user.
Closes#24231.
