IF YOU WOULD LIKE TO GET AN ACCOUNT, please write an
email to Administrator. User accounts are meant only to access repo
and report issues and/or generate pull requests.
This is a purpose-specific Git hosting for
BaseALT
projects. Thank you for your understanding!
Только зарегистрированные пользователи имеют доступ к сервису!
Для получения аккаунта, обратитесь к администратору.
We want to get away from gnu-efi and the only really usable source of
EFI headers would be EDK2, which is somewhat impractical to use and
quite large to require to be around just for some headers.
As a bonus point, the new headers are safe to be included in userspace
code.
This should not have any behavior changes as it is mostly changing
header includes. There are some renames to conform to standard names
and a few minor device path fixups as the struct is defined slightly
different.
Of note is that this removes usage of uchar.h and wchar.h as they are
not guaranteed to be available in a freestanding environment. Instead
efi.h will provide the needed types.
I'm not sure what "suffix" was meant by this comment, but the file has the usual suffix.
The file was added with the current name back in c4708f1323.
Maybe an earlier version of the patch did something different.
We nowadays check for ordering anyway at time of writing entries, hence
we don't have to do that at moment of opening, too.
Benefit of dropping this check: we can safely archive files from the
future instead of marking them as broken.
We allow reading them, and we allow creating them, but we so far did not
allow opening existing ones for write – if the machine ID is not
initialized.
Let's fix that.
(This is just to fix an asymmetry. I have no immediate use for this. But
test code should in theory be able to use this, if it runs in an
incompletely initialized environment.)
Previously, if we ran in an environment where /etc/machine-id was
not defined, we'd never bother to write it ever again. So it would stay
at all zeroes till the end of times.
Let's make this more robust: whenever we try to append an entry, let's
try to refresh it from the status quo if not initialized yet. Moreover,
when copying records from a different journal file, let's propagate the
machine ID from there.
This should make things more robust and systematic, and match how we
propagate the boot ID and the seqnum ID to some level.
This doesn't actually change much, but makes the code less surprising.
Status quo ante:
1. Open a journal file
2. If newly created set header machine ID to zero
3. If existing and open for write check if machine ID in header matches
local one, if not, refuse.
4. if open for writing, now refresh the machine ID from the local system
Of course, step 4 is pretty much pointless for existing files, as the
check in 3 made sure it is already in order or we'd refuse operating on
it anyway. With this patch this is simplified to:
1. Open a journal file
2. If newly created initialized machine ID to local machine ID
3. If existing, compare machine ID in header with local one, if not
matching refuse.
Outcome is the same.
The header of the journal file contains a boot ID field that is
currently updated whenever we open the journal file. This is not ideal:
pretty often we want to archive a journal file, and need to open it for
that. Archiving a foreign journal file should not mark it as ours, it
should just change the status flag in the file header.
The boot ID in the header is aleady rewritten whenever we write a
journal entry to the file anyway, hence all this patch effectively does
is slightly "delay" when the boot ID in the header is updated: instead
of immediately on open it is updated on the first entry that is written.
Net effect: archived journal files don't all look like they were written
to on a boot newer then they actually were
And more importantly: the "tail_entry_monotonic" field suddenly becomes
useful, since we know which boot it belongs to. Generally, monotonic
timestamps without boot ID information are useless, and this fixes it.
A new (compatible) header flag marks file where the boot_id can be
understood this way. This can be used by code that wants to make use of
the "tail_entry_monotonic" field to ensure it actually can do so safely.
This also renames the structure definition in journal-def accordingly,
to indicate we now follow the stricter semantics for it.
In 6abe882bae the renderer was made to
unconditionally append a newline to output. This works, but is ugly. A nicer
solution is to tell jinja2 to not strip the newline in the first place, via
keep_trailing_newline=True. It seems that the result is unchanged because all
our source files have exactly one trailing newline.
Also, enable lstrip_blocks=True. This would cause whitespace on the line before
an {%if block to be automatically stripped. It seems reasonable to enable that
if trim_blocks=True.
Overall, no change is expected, though I didn't test combinations of
configurations, so there might be a change in some cases. But now the rules of
rendering are more logical, e.g. we should be able to indent nested conditional
statements without getting unexpected whitespace in the output.
We should be more careful with distinguishing the cases "all bits set in
caps mask" from "cap mask invalid". We so far mostly used UINT64_MAX for
both, which is not correct though (as it would mean
AmbientCapabilities=~0 followed by AmbientCapabilities=0) would result
in capability 63 to be set (which we don't really allow, since that
means unset).
The rest of our codebase stores caps masks in a uint64_t, and also
assumes UINT64_MAX was a suitable value for "unset mask". Hence refuse
any caps outside of 0…62.
(right now the kernel knows 40 caps, hence 22 more to go before we have
to reconsider our life's choices.)
We refuse it otherwise currently, simply because we cannot store it in a
uint64_t caps mask value anymore while retaining the ability to use
UINT64_MAX as "unset" marker.
The check actually was in place already, just one off.
r and R take globs, so let's name the argument appropriately in the tl;dr listing.
Also, use 'clean-up' in the file name where it represents the verb "clean up",
and other minor spelling adjustments.
In 6a34639e76 arg_hwdb_bin_dir was replaced by
default_hwdb_bin_dir, which is constant. Generally we'd use a #define instead,
but since there's just one use, let's just avoid the indirection altogether.
