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(The interesting bits about the what and why are in a comment in the
patch, please have a look there instead of looking here in the commit
msg).
Fixes: #10872
Our IO handler is only installed for one fd, hence there's no reason to
conditionalize on it again.
Also, split out the draining into a helper function of its own.
Some distros install nologin as /usr/sbin/nologin, others as
/sbin/nologin.
Since we can't really on merged-usr everywhere (where the path wouldn't
matter), make the path build time configurable via -Dnologin-path=.
Closes#13028
Urlich Windl wrote on the mailing list:
> I noticed that a line of "=======" in "[Service]" cases the message " Unknown lvalue '' in section 'Service'".
This now becomes:
/etc/systemd/system/eqeqeqeq.service:3: Missing key name before '=', ignoring line.
We generally don't treat syntax error as fatal, but in this case we would
completely refuse to load the file. I think we should treat the the same
as assignment outside of a section, or an unknown key name.
Jobs are added to the run queue in random order. This happens because most
jobs are added by iterating over the transaction or dependency hash maps.
As a result, jobs that can be executed at the same time are started in a
different order each time.
On small embedded devices this can cause a measurable jitter for the point
in time when a job starts (~100ms jitter for 10 units that are started in
random order).
This results is a similar jitter for the boot time. This is undesirable in
general and make optimizing the boot time a lot harder.
Also, jobs that should have a higher priority because the unit has a higher
CPU weight might get executed later than others.
Fix this by turning the job run_queue into a Prioq and sort by the
following criteria (use the next if the values are equal):
- CPU weight
- nice level
- unit type
- unit name
The last one is just there for deterministic sorting to avoid any jitter.
The enum order will be used to order jobs in the job queue.
Make sure that unit types that fork aditional processes come first to
maximize parallelism.
Change the resolved.conf Cache option to a tri-state "no, no-negative, yes" values.
If a lookup returns SERVFAIL systemd-resolved will cache the result for 30s (See 201d995),
however, there are several use cases on which this condition is not acceptable (See systemd#5552 comments)
and the only workaround would be to disable cache entirely or flush it , which isn't optimal.
This change adds the 'no-negative' option when set it avoids putting in cache
negative answers but still works the same heuristics for positive answers.
Signed-off-by: Jorge Niedbalski <jnr@metaklass.org>
The flag IFA_F_NOPREFIXROUTE was introduced in kernel-3.14. But even if
the kernel does not support the flag, it should be just ignored. So, it
is not necessary to do the fallback logic. Moreover, the current logic
is not a fallback mechanism but just retrying. So, it should not work.
Let's drop that.
This restores proper speed with asan builds with gcc 9.1.1.
Fixes#12997.
$ rpm -q gcc
gcc-9.1.1-2.fc31.x86_64
$ time ASAN_OPTIONS=strict_string_checks=1:detect_stack_use_after_return=1:check_initialization_order=1:strict_init_order=1 UBSAN_OPTIONS=print_stacktrace=1:print_summary=1:halt_on_error=1 build-rawhide-sanitize/test-conf-parser
(old) 86.99s user 20.22s system 361% cpu 29.635 total
(new) 3.05s user 0.29s system 99% cpu 3.377 total
Size is increased a bit:
$ size build/systemd
(old) 1683421 246100 1208 1930729 1d75e9 build/systemd
(new) 1688237 246100 1208 1935545 1d88b9 build/systemd
... but that's <0.1%, so we don't really care.
The comment explains the reason: we'd wait for the second \n
and then ungetc() it. Then the buffered \n would cause a problem
when the next prompt was issued, so in effect it wasn't possible
to answer the second question.
The user most likely knows the name of their locale/keymap/whatever,
and paging through multiple pages of output has little benefit.
The header that was printed before is now not printed anymore. But
now it's obvious from the context what we are printing, so we don't
need to print the header.
The commit
"util: Do not clear parent mount flags when setting up namespaces"
introduced a statvfs call read the flags of the original mount
and have them applied to the bind mount.
This has two problems:
(1) The mount flags returned by statvfs(2) do not match the flags
accepted by mount(2). For example, the value 4096 means ST_RELATIME
when returned by statvfs(2), but means MS_BIND when passed to mount(2).
(2) A call to statvfs blocks indefinitely when ran against a disconnected
network drive ( https://github.com/systemd/systemd/issues/12667 ).
We already use libmount to parse `/proc/self/mountinfo` but did not use the
mount flag information from there. This patch changes that to use the mount
flags parsed by libmount instead of calling statvfs. Only if getting the
flags through libmount fails we call statvfs.
Fixes https://github.com/systemd/systemd/issues/12667
The test would not pass before, because EXTRACT_UNQUOTE|EXTRACT_RETAIN_ESCAPE
didn't work (we'd get "KEY3=val with \\quotation\\" as the last string. Now we
are only doing EXTRACT_UNQUOTE, so we get the expected "KEY3=val with \"quotation\"".
Coverity CID#1402781.
