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We should chown what we allocate ourselves, i.e. any pty we allocate
ourselves. But for stuff we propagate, let's avoid that: we shouldn't
make more changes than necessary.
Fixes: #17229
If we set O_NONBLOCK on stdin/stdout directly this means the flag is
left set when we abort abnormally, as we don't get the chance to reset
it again on exit. This might confuse progrms invoking us. Moreover, if
programs invoking us continue to write to the stdout passed to us, they
might be confused by non-blocking mode too.
Hence, let's avoid this if possible: let's reopen stdin/stdout and set
O_NONBLOCK only on the reopend fds, leaving the original fds as they
are.
Prompted-by: https://github.com/systemd/systemd/pull/17070#issuecomment-702304802
*** Running /home/zbyszek/src/systemd-work/test/test-sysusers/test-14.input (with login.defs symlinked)
login.defs specifies UID allocation range 401–555 that is different than the built-in defaults (201–998)
login.defs specifies GID allocation range 405–666 that is different than the built-in defaults (201–990)
Also, even if login.defs are not present, don't start allocating at 1, but at
SYSTEM_UID_MIN.
Fixes#9769.
The test is adjusted. Actually, it was busted before, because sysusers would
never use SYSTEM_GID_MIN, so if SYSTEM_GID_MIN was different than
SYSTEM_UID_MIN, the tests would fail. On all "normal" systems the two are
equal, so we didn't notice. Since sysusers now always uses the minimum of the
two, we only need to substitute one value.
We were looking at ${f%.*}, i.e. the $f with any suffix starting with a dot removed.
This worked fine for paths like /some/path/test-11.input. It also worked
for paths like /some/path/inline (there were no dots, so we got $f back unscathed).
But in the ubuntu CI the package is built in a temporary directory like
/tmp/autopkgtest-lxc.nnnfqb26/downtmp/build.UfW/ (yes, it has a dot, even two.).
That still worked for the first case, but in the second case we truncated things
after the first dot, and we would try to get
/tmp/autopkgtest-lxc.nnnfqb26/downtmp/build and try to load
/tmp/autopkgtest-lxc.nnnfqb26/downtmp/build.expected-password, which obviously
didn't work as expected. To avoid this issue, do the suffix removal only when
we know that there really is a suffix.
A second minor issue was that we would try to copy $1.expected-*, and sometimes
$1 would be given, and sometimes not. Effectively we were relying on there
not being any files matching .expected-*. There weren't any such files, but let's
avoid this ugliness and always pass $1.
All this test does is manipulate text files in a subdir specified with --testroot.
It can be a normal unittest without the overhead of creating a machine image.
As a bonus, also test the .standalone version.
We don't (and shouldn't I think) look at them when determining the type of the
user, but they should be used during user/group allocation. (For example, an
admin may specify SYS_UID_MIN==200 to allow statically numbered users that are
shared with other systems in the range 1–199.)
It makes little sense to make the boundary between systemd and user guids
configurable. Nevertheless, a completely fixed compile-time define is not
enough in two scenarios:
- the systemd_uid_max boundary has moved over time. The default used to be
500 for a long time. Systems which are upgraded over time might have users
in the wrong range, but changing existing systems is complicated and
expensive (offline disks, backups, remote systems, read-only media, etc.)
- systems are used in a heterogenous enviornment, where some vendors pick
one value and others another.
So let's make this boundary overridable using /etc/login.defs.
Fixes#3855, #10184.
THis doesn't change the condition's logic at all, but is an attempt to
make things a bit more readable: instead of checking log_target !=
LOG_TARGET_AUTO let's actually list the targets where we want to
consider journal/syslog/kmsg, to make things a bit less confusing. After
all the message here is not to avoid them if LOG_TARGET_AUTO is set, but
to definitely do them in the other cases.
Let's explicitly deactivate all home dirs on shutdown, in order to
properly synchronizing unmounting and avoiding blocking devices.
Previously, we'd rely on automatic deactivation when home directories
become unused. However, that scheme is asynchronous, and ongoing
deactviations might conflicts with attempts to unmount /home. Let's fix
that by providing an explicit service systemd-homed-activate.service
whose only job is to have a ExecStop= line that explicitly deactivates
all home directories on shutdown. This service can the be ordered after
home.mount and similar, ensuring that we'll first deactivate all homes
before deactivating /home itself during shutdown.
This is kept separate from systemd-homed.service so that it is possible
to restart systemd-homed.service without deactivating all home
directories.
Fixes: #16842
If the hostname of a system is set to an fqdn, glibc traditionally
derives a search domain from it if none is explicitly configured.
This is a bit weird, and we currently don't do that in our own search
path logic.
Following #17193 let's turn this behaviour off for now.
Yes, this has a slight chance of pissing people off who think this
behaviour is good. If this is indeed an issue, we can revisit the issue
but in that case if we readd the concept we should do it properly:
derive the search domain from the fqdn in our codebase too and report it
in resolvectl, and in our generated stub files. But I have the suspicion
most people who set the hostname to an fqdn aren#t even aware of this
behaviour nor want it, so let's wait until people complain.
Fixes: #17193
We should avoid duplicating lengthy description of very similar concepts.
--root-hash-sig follows the same semantics as RootHashSig=, so just refer
the reader to the other man page. --root-hash doesn't implement the same
features as RootHash=, so we can't fully replace the description, but let's
give the user a hint to look at the other man page too.
For #17177.
Also, reword the description a bit. "As a string" is meaningless in the context
of commandline arguments, where evyrything is a string. This is not a
strongly-typed programming language where 5 is a number but "5" is something
completely different. Here both 5 and "5" are indistinguishable. The original
text was trying to say that a location name should be given and not a number,
so say "time zone location name".
For #17177.
In table titles, capitalize only the first word (they are rather long and
it is easier to read when it looks like a normal sentence).
Adjust some phrases to make them clearer when reported as unclear in #17177.
It can be one of "foreign", "missing", "stub", "static", "uplink",
depending on how /etc/resolv.conf is set up:
foreign → someone/something else manages /etc/resolv.conf,
systemd-resolved is just the consumer
missing → /etc/resolv.conf is missing altogether
stub/static/uplink → the file is managed by resolved, with the
well-known modes
Fixes: #17159
This basically implements fc58c0c7bf for gshadow.
gpasswd may not have a lock/unlock that behaves the same as passwd, but
according to gshadow(5) the logic of the password field is the same.
This is like membarrier() I guess and basically just exposes CPU
functionality via kernel syscall on some archs. Let's whitelist it for
everyone.
Fixes: #17197
