Yu Watanabe [Fri, 25 Jun 2021 06:30:13 +0000 (15:30 +0900)]
core: do not set nosuid mount option when SELinux is enabled
The mount option has special meaning when SELinux is enabled. To make
NoNewPrivileges=yes not break SELinux enabled systems, let's not set the
mount flag on such systems.
Let's re-enable that feature now. As reported when the original commit
was merged, this causes some trouble on SELinux enabled systems. So,
in the subsequent commit, the feature will be disabled when SELinux is enabled.
But, anyway, this commit just re-enable that feature unconditionally.
This fixes repart's, systemctl's, sysusers' and tmpfiles' specifier
expansion to honour the root dir specified with --root=. This is
relevant for specifiers such as %m, %o, … which are directly sourced
from files on disk.
This doesn't try to be overly smart: specifiers referring to runtime
concepts (i.e. boot ID, architecture, hostname) rather than files on the
medium are left as is. There's certainly a point to be made that they
should fail in case --root= is specified, but I am not entirely convinced
about that, and it's certainly something we can look into later if
there's reason to.
I wondered for a while how to hook this up best, but given that quite a
large number of specifiers resolve to data from files on disks, and most
of our tools needs this, I ultimately decided to make the root dir a
first class parameter to specifier_printf().
Frantisek Sumsal [Thu, 24 Jun 2021 10:13:52 +0000 (12:13 +0200)]
test: correctly mask supporting services in tests, take #2
Due to a little misunderstanding the last patch doesn't work as
expected, since test_create_image() is called only for the first image
(usually TEST-01-BASIC), and all subsequent images are then (possibly)
modified with test_append_files().
core: avoid calling path_simplify() unnecessarilly for u.requires_mounts_for keys
We would always call path_simplify() before doing a lookup, which requires the
path key to be duplicated first. But the hashmap lookup doesn't require this…
So let's opportunistically skip the allocation if the key is already present.
Inspired by https://github.com/systemd/systemd/pull/19973.
shared/selinux-util: rework switching of the getenforce() function
The approach with function pointer was neat, but it gets in the way
when we want to resolve the symbol dynamically: static initialization
is not possible. It also makes the code more complicated than necessary.
In this case, a simple boolean is sufficient.
dlfcn-util: invert function naming and add helper that does the whole job
We warn when the operation fails, not when it succeeds. Hence this should be
"<do>_or_<handle failure>", not "<do>_and_<handle failure>". We *could* use
whatever convention we want, but rust and perl are rather consistent in using
the logical convention. We don't care about perl that much, but having a naming
convention inverted wrt. rust would be rather confusing.
Also, pretty much every implementation does similar steps, so add a nice
wrapper which combines opening of the library and loading of the symbols.
Also add missing sentinel attribute in dlopen_or_warn().
meson: drop libseccomp and libselinux from libbasic linkage
This means libsystemd.so is without them now. This is important
because countless programs link to libsystemd.so, and do not need
to pull in selinux now. And libselinux.so pulls in libpcre2, so
we trim a nice dependency tree.
I'm not sure why libseccomp was listed there. No code seems to
refer to it.
basic,shared: move a bunch of files to src/shared/
The goal is to move everything that requires selinux or smack
away from src/basic/. This means that src/basic/label.[ch] must move,
which implies btrfs-util.[ch], copy.[ch], and a bunch of other files
which form a cluster of internal use.
This is just moving text around, so there should be no functional difference.
test-blockdev-util is new, because path_is_encrypted() is moved to
blockdev-util.c, and so far we didn't have any tests for code there.
This was added in 88d775b734644f26fb490836769c2bc275498fde,
with the apparent intent of using in shared/ and the rest of our code.
It doesn't matter much for our code, since libdl is part of glibc anyway,
but moving it removes one linkage from libsystemd. (libshared was already
linking to libdl explicitly).
basic: move acquire_data_fd() and fd_duplicate_data_fd() to new data-fd-util.c
fd_duplicate_data_fd() is renamed to copy_data_fd(). This makes
the two functions have nicely similar names.
Now fd-util.[ch] is again about low-level file descriptor manipulations.
copy_data_fd() is a complex function that internally wraps the other
functions in copy.c. I want to move copy.c and the whole cluster of
related code from basic/ to shared/ later on, and this is a preparatory
step for that.
Frantisek Sumsal [Tue, 22 Jun 2021 10:30:24 +0000 (12:30 +0200)]
test: correctly mask supporting services in tests
It turns out the "supporting services" were run in _all_ tests if
TEST-01-BASIC was run as the first test (which is usually the case),
since with the original condition in test_create_image() we would skip
the masking and then propagate the change to the default image used by
other tests. This has been causing multiple bogus test timeouts
(especially when the hwdb was being rebuilt in tests with short
timeouts, like TEST-52-HONORFIRSTSHUTDOWN).
Let's "fix" this by making the call to mask_supporting_services()
uncoditional and override the test_create_image() function in
TEST-01-BASIC to avoid the masking in this single case.
Frantisek Sumsal [Tue, 22 Jun 2021 10:12:34 +0000 (12:12 +0200)]
test: ignore the "freezing" & "thawing" intermediate states
When checking the unit state after `systemctl freeze|thaw` we can be
"too fast" and get the intermediate state (freezing/thawing) which we're
not interested in. Let's wait a bit and try to get the state again in
such cases to avoid unnecessary flakiness.
Luca Boccassi [Thu, 17 Jun 2021 21:53:16 +0000 (22:53 +0100)]
test-loop-block: run in qemu
test-loop-block needs to run in qemu, so we are currently not
testing it in the CI. Run it by itself in a separate job from
TEST-02-UNITTESTS to avoid slowing that suite down.
Before this commit:
mode=1777,size=10%,nr_inodes=400k,uid=496107520,gid=496107520,context=,sys.id:sys.role:systemd.nspawn.container.fs:s0,
After this commit:
mode=1777,size=10%,nr_inodes=400k,uid=496107520,gid=496107520,context=sys.id:sys.role:systemd.nspawn.container.fs:s0
Anders Wenhaug [Sun, 20 Jun 2021 19:43:07 +0000 (21:43 +0200)]
time-util: don't use plural units indiscriminately
format_timestamp_relative currently returns the plural form of
years and months no matter the quantity, and in many cases (for
durations > 1 week) this is the same with days.
This patch changes this so that the function takes the quantity into account,
returning "1 month 1 week ago" instead of "1 months 1 weeks ago".
repart: make No-Auto GPT partition flag configurable too
This is useful for provisioning initially empty secondary A/B root file
systems. We don't want those to ever be considered for automatic
mounting, for example in "systemd-nspawn --image=", hence we should
create them with the No-Auto flag turned on. Once a file system image is
dropped into the partition the flag may be turned off by the updater
tool, so that it is considered from then on.
Thew new option for this is called NoAuto. I dislike negated options
like this, but this is taken from the naming in the spec, which in turn
inherited the name from the same flag for Microsoft Data Partitions. To
minimize confusion, let's stick to the name hence.
path-util: make path_equal() an inline wrapper around path_compare()
The two are completely identical, only the return code is inverted.
let's hence make it easy for the compiler to make it the same function
call even in lowest optimization modes.
Frantisek Sumsal [Thu, 17 Jun 2021 18:17:25 +0000 (20:17 +0200)]
test: wait until the unit leaves the 'inactive' state as well
In many CI runs I noticed a race where we check the "active" state a bit
too early where the unit is still in the "inactive" state, causing the
`is-failed` check to fail. Mitigate this by waiting even if the unit is
in the inactive state and introduce a "safe net" which checks whether
the unit is not restarting indefinitely or more than it should (as
described in the original issue #3166).
Example:
```
[ 5.757784] testsuite-11.sh[216]: + systemctl --no-block start fail-on-restart.service
[ 5.853657] testsuite-11.sh[222]: ++ systemctl show --value --property ActiveState fail-on-restart.service
[ 5.946044] testsuite-11.sh[216]: + active_state=inactive
[ 5.946044] testsuite-11.sh[216]: + [[ inactive == \a\c\t\i\v\a\t\i\n\g ]]
[ 5.946044] testsuite-11.sh[216]: + [[ inactive == \a\c\t\i\v\e ]]
[ 5.946044] testsuite-11.sh[216]: + systemctl is-failed fail-on-restart.service
[ 5.946816] systemd[1]: fail-on-restart.service: Passing 0 fds to service
[ 5.946913] systemd[1]: fail-on-restart.service: About to execute false
[ 5.947011] systemd[1]: fail-on-restart.service: Forked false as 228
[ 5.947093] systemd[1]: fail-on-restart.service: Changed dead -> start
[ 5.947172] systemd[1]: Starting Fail on restart...
[ 5.947272] systemd[228]: fail-on-restart.service: Executing: false
[ 5.960553] testsuite-11.sh[227]: activating
[ 5.965188] testsuite-11.sh[216]: + exit 1
[ 6.011838] systemd[1]: Received SIGCHLD from PID 228 (4).
[ 6.012510] systemd[1]: fail-on-restart.service: Main process exited, code=exited, status=1/FAILURE
[ 6.012638] systemd[1]: fail-on-restart.service: Failed with result 'exit-code'.
[ 6.012834] systemd[1]: fail-on-restart.service: Service will restart (restart setting)
[ 6.012963] systemd[1]: fail-on-restart.service: Changed running -> failed
[ 6.013081] systemd[1]: fail-on-restart.service: Unit entered failed state.
```
plattrap [Fri, 18 Jun 2021 00:32:02 +0000 (12:32 +1200)]
Update systemd-resolved.service.8 help
Text currently refers to `/etc/nsswitch.conf` where it should refer to `/etc/resolv.conf`.
This is in the context of defining a nameserver IP and search domains.
Frantisek Sumsal [Thu, 17 Jun 2021 12:38:21 +0000 (14:38 +0200)]
test: drop the mawk-incompatible expression
The three-argument match() is a GNU AWK extension, thus breaking the
compatibility with mawk (used on Ubuntu/Debian, for example). Let's
replace it with a (hopefully) more portable sed expression to drop the
inadvertently introduced gawk dependency.
Jan Macku [Thu, 27 May 2021 10:25:51 +0000 (12:25 +0200)]
core: Hide "Deactivated successfully" message
Show message "Deactivated successfully" in debug mode (when manager is
user) rather than in info mode. This message has low information value
for regular users and it might be a bit overwhelming on a system with
a lot of devices.
meson: allow "soft-static" allocations for uids and gids in the initrd
The general idea with users and groups created through sysusers is that an
appropriate number is picked when the allocation is made. The number that is
selected will be different on each system based on the order of creation of
users, installed packages, etc. Since system users and groups are not shared
between installations, this generally is not an issue. But it becomes a problem
for initrd: some file systems are shared between the initrd and the host (/run
and /dev are probably the only ones that matter). If the allocations are
different in the host and the initrd, and files survive switch-root, they will
have wrong ownership.
This makes the gids build-time-configurable for all groups and users where
state may survive the switch from initrd to the host.
In particular, all "hardware access" groups are like this: files in /dev will
be owned by them. Eventually the new udev would change ownership, but there
would be a momemnt where the files were owned by the wrong group. The
allocations are "soft-static" in the language of Fedora packaging guidelines:
the uid/gid will be used if possible, but we'll fall back to a different
one. TTY_GID is the exception, because the number is used directly.
Similarly, the possibility to configure "soft-static" uids is added for daemons
which may usefully run in the initramfs: systemd-network (lease information and
interface state is serialized to /run), systemd-resolve (stub files and
interface state), systemd-timesync (/run/systemd/timesync).
Journal files are owned by the group systemd-journal, and acls are granted
for wheel and adm.
systemd-oom and systemd-coredump are excluded from this patch: I assume that
oomd is not useful in the initrd, and coredump leaves no state (it only creates
a pipe in /run?).
The defaults are not changed: if nothing is configured, dynamic allocation will
be used. I looked at a Debian system, and the numbers are all different than
on Fedora.
For Fedora, see the list of uids and gids at https://pagure.io/setup/blob/master/f/uidgid.
In particular, systemd-network and systemd-resolve got soft-static numbers to
make it easy to transition from a non-host-specific initrd to a host system
already a few years back (https://bugzilla.redhat.com/show_bug.cgi?id=1102002).
I also requested static allocations for sgx, input, render in
https://pagure.io/packaging-committee/issue/1078,
https://pagure.io/setup/pull-request/27.
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