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Currently, there exist only two MTU sources, static and DHCPv4, and they
are exclusive. Hence, it is not necessary to check the existence of the
MTU option in the acquired DHCP lease. Let's unconditionally reset the
MTU. Note that, if the current and original MTU are equivalent, then
link_request_to_set_mtu() handles that gracefully.
The commit 6706ce2fd2 made
IgnoreCarrierLoss= setting also take timespan, to make users handle
issues like #18738 or #20887. But still users needed to explicitly set
a timespan.
This makes networkd automatically determine the timeout when the
situations #18738 or #19832 is detected. Unfortunately, still users have
issue #20887 need to specify a value.
Closes#19832.
The function was named confusingly and we managed to confused ourselves. The
parameter was assigned incorrectly and then reassigned correctly in the caller.
Let's simplify the whole thing by just saving the optarg param.
I considered moving the unhexmemming and/or reading of the file to the parse
function, but decided against it. I think it's nicer to parse all options
before opening external files.
On arm, we'd fail with:
target@v:5.16.8-200.fc35.armv7hl+lpae.socket: not a valid unit name "target@v:5.16.8-200.fc35.armv7hl+lpae.socket": Invalid argument
Some filesystems (e.g. zfs with compression!=off, which is the default
configuration) automatically hole-punch all-zero blocks ‒ write a block
full of ones instead
It seems that --invert-grep used to affect --author, but now it doesn't (with
git-2.35.1-1.fc36.x86_64), so effectively we would only show the one entry that
was supposed to be filtered out.
The handling of whitespace in pyparsing is a bother. There's some
global state, and per-element state, and it's hard to get a handle on
things. With python3-pyparsing-2.4.7-10.fc36.noarch the grammar would
not match. After handling of tabs was fixed to not accept duplicate tabs,
the grammar passes.
It seems that the entry for usb:v8087p8087*
was generated incorrectly because we treated the interface line
(with two TABs) as a device line (with one TAB).
As suggested in
8b3ad3983f (r837345892)
The define is generalized and moved to path-lookup.h, where it seems to fit
better. This allows a recursive include to be removed and in general makes
things simpler.
Inspired by 7910ec3bcd.
'! true' passes, because it's a conditional expression.
But '( ! true )' fails, because '( … )' creates a subshell, i.e. a separate
program, and '! true' becomes the return value of that program, and the whole
thing apparently is not a conditional expression for the outer shell.
This is shorter, so let's just do this.
We would only accept "identical" links, but having e.g. a symlink
/usr/lib/systemd/system/foo-alias.service → /usr/lib/systemd/system/foo.service
when we're trying to create /usr/lib/systemd/system/foo-alias.service →
./foo.service is OK. This fixes an issue found in ubuntuautopkg package
installation, where we'd fail when enabling systemd-resolved.service, because
the existing alias was absolute, and (with the recent patches) we were trying
to create a relative one.
A test is added.
(For .wants/.requires symlinks we were already doing OK. A test is also
added, to verify.)
When we have a symlink that goes outside of our search path, we should just
ignore the target file name. But we were verifying it, and rejecting in
the case where a symlink was created manually.
The two states are distinguished, but are treated everywhere identically,
so there is no difference in behaviour except for slighlty different log
output.
We'd say that file is enabled indirectly if we had a symlink like:
foo@.service ← bar.target.wants/foo@one.service
but not when we had
foo@one.service ← bar.target.wants/foo@one.service
The effect of both link types is the same. In fact we don't care
about the symlink target. (We'll warn if it is mismatched, but we honour
it anyway.)
So let's use the original match logic only for aliases.
For .wants/.requires we instead look for a matching source name,
or a source name that matches after stripping of instance.
This is a fairly noticable change, but I think it needs to be done.
So far we'd create an absolute symlink to the target unit file:
.wants/foo.service → /usr/lib/systemd/system/foo.service
or
alias.service → /etc/systemd/system/aliased.service.
This works reasonably well, except in one case: where the unit file
is linked. When we look at a file link, the name of the physical file
isn't used, and we only take the account the symlink source name.
(In fact, the destination filename may not even be a well-formed unit name,
so we couldn't use it, even if we wanted to.) But this means that if
a file is linked, and specifies aliases, we'd create absolute links for
those aliases, and systemd would consider each "alias" to be a separate
unit. This isn't checked by the tests here, because we don't have a running
systemd instance, but it is easy enough to check manually.
The most reasonable way to fix this is to create relative links to the
unit file:
.wants/foo.service → ../foo.service
alias.service → aliased.service.
I opted to use no prefix for aliases, both normal and 'default.target',
and to add "../" for .wants/ and .requires/. Note that the link that is
created doesn't necessarily point to the file. E.g. if we're enabling
a file under /usr/lib/systemd/system, and create a symlink in /etc/systemd/system,
it'll still be "../foo.service", not "../../usr/lib/systemd/system/foo.service".
For our unit loading logic this doesn't matter, and figuring out a path
that actually leads somewhere would be more work. Since the user is allowed
to move the unit file, or add a new unit file in a different location, and
we don't actually follow the symlink, I think it's OK to create a dangling
symlink. The prefix of "../" is useful to give a hint that the link points
to files that are conceptually "one level up" in the directory hierarchy.
With the relative symlinks, systemd knows that those are aliases.
The tests are adjusted to use the new forms. There were a few tests that
weren't really testing something useful: 'test -e x' fails if 'x' is a
a dangling symlink. Absolute links in the chroot would be dangling, even
though the target existed in the expected path, but become non-dangling
when made relative and the test fails.
This should be described in NEWS, but I'm not adding that here, because
it'd likely result in conflicts.
