kernel-install: do not require non-empty kernel cmdline
When booting with Fedora-Server-dvd-x86_64-30-20190411.n.0.iso,
/proc/cmdline is empty (libvirt, qemu host with bios, not sure if that
matters), after installation to disk, anaconda would "crash" in kernel-core
%posttrans, after calling kernel-install, because dracut would fail
with
> Could not determine the kernel command line parameters.
> Please specify the kernel command line in /etc/kernel/cmdline!
I guess it's legitimate, even if unusual, to have no cmdline parameters.
Two changes are done in this patch:
1. do not fail if the cmdline is empty.
2. if /usr/lib/kernel/cmdline or /etc/kernel/cmdline are present, but
empty, ignore /proc/cmdline. If there's explicit configuration to
have empty cmdline, don't ignore it.
The same change was done in dracut:
https://github.com/dracutdevs/dracut/pull/561.
Traditionally, user logins had a $PATH in which /bin was before /sbin, while
root logins had a $PATH with /sbin first. This allows the tricks that
consolehelper is doing to work. But even if we ignore consolehelper, having the
path in this order might have been used by admins for other purposes, and
keeping the order in user sessions will make it easier the adoption of systemd
user sessions a bit easier.
core: stop removing non-existent and duplicate lookup paths
When we would iterate over the lookup paths for each unit, making the list as
short as possible was important for performance. With the current cache, it
doesn't matter much. Two classes of paths were being removed:
- paths which don't exist in the filesystem
- paths which symlink to a path earlier in the search list
Both of those points cause problems with the caching code:
- if a user creates a directory that didn't exist before and puts units there,
now we will notice the new mtime an properly load the unit. When the path
was removed from list, we wouldn't.
- we now properly detect whether a unit path is on the path or not.
Before, if e.g. /lib/systemd/system, /usr/lib/systemd/systemd were both on
the path, and /lib was a symlink to /usr/lib, the second directory would be
pruned from the path. Then, the code would think that a symlink
/etc/systemd/system/foo.service→/lib/systemd/system/foo.service is an alias,
but /etc/systemd/system/foo.service→/usr/lib/systemd/system/foo.service would
be considered a link (in the systemctl link sense).
Removing the pruning has a slight negative performance impact in case of
usr-merge systems which have systemd compiled with non-usr-merge paths.
Non-usr-merge systems are deprecated, and this impact should be very small, so
I think it's OK. If it turns out to be an issue, the loop in function that
builds the cache could be improved to skip over "duplicate" directories with
same logic that the cache pruning did before. I didn't want to add this,
becuase it complicates the code to improve a corner case.
*We* control the sysctl setting. If the user configured IPv6, then we apply the
settings, and just make sure that at some point during the configuration the
sysctl is disabled (i.e. ipv6 enabled) if we have IPv6 configured.
Hans de Goede [Tue, 20 Aug 2019 20:55:20 +0000 (22:55 +0200)]
hwdb: Add accel location quirk for the GPD win
The acceleromater in the GPD win is in the base, mark it as such so that
iio-sensor-proxy does not try to use it for display rotation.
Note as mentioned in the added comment the DMI strings are unfortunately
somewhat generic, but the combination of using all DMI strings including
the BIOS build data + the sensor modalias should be unique enough.
Dan Streetman [Tue, 13 Aug 2019 11:52:57 +0000 (07:52 -0400)]
test/test-functions: use binaries from $BUILD_DIR or installed system
In Ubuntu CI, we test binaries from the installed system, not from
$BUILD_DIR, so use the appropriate binary. Most of the calls to the
binaries are part of checking/processing asan-built binaries, and so
did not apply to Ubuntu CI, except for generating noise in the stderr
log like:
objdump: '/tmp/autopkgtest.83yGoI/build.fHB/src/test/TEST-01-BASIC/systemd-journald': No such file
However this also applies to the call to systemd-nspawn, which the debian
upstream test wrapper was sed-adjusting to use the installed binary
instead of the binary in $BUILD_DIR. This commit allows removing that
sed processing of the test-functions file during Ubuntu CI test.
Arian van Putten [Mon, 12 Aug 2019 17:36:56 +0000 (19:36 +0200)]
journalctl: Make journalctl --user-unit= match on _SYSTEMD_USER_SLICE
journalctl --unit= already did this, and allows you to tail all the logs
for a certain slice easily. It seemed only natural to make --user-unit
behave in a similar way.
The _SYSTEMD_USER_SLICE field was not documented as being added by
journald, so I have added that to the documentation too.
Furthermore, I have documented the existing behaviour of --unit= and the
new behaviour of --user-unit=
The behaviour was actually not documented before, so I am also OK with
removing the match for the --unit= command instead. The user would then
have to manually provide _SYSTEMD_SLICE= filter to journalctl in both
cases. Both options work for me.
pid1: after creating transient drop-ins, put file in path cache
The alternative would be to recreate the cache, but dropins can be created very
often for transient settings, so updating the cache seems like a much faster
option.
shared/watchdog: close watchdog device when done with it
The file descriptor was opened with O_CLOEXEC, so in practice this doesn't
change too much, but it seems cleaner to always close the old fd when
changing the device path.
It's hard to say what is going on here without any error messages whatsoever.
The test goes into deep details of journal file handling, so it needs to also
do logging on its own.
Kai Krakow [Sat, 17 Aug 2019 00:33:43 +0000 (02:33 +0200)]
cgroup: Also set io.bfq.weight
Current kernels with BFQ scheduler do not yet set their IO weight
through "io.weight" but through "io.bfq.weight" (using a slightly
different interface supporting only default weights, not per-device
weights). This commit enables "IOWeight=" to just to that.
shared/user-util: allow usernames with dots in specific fields
People do have usernames with dots, and it makes them very unhappy that systemd
doesn't like their that. It seems that there is no actual problem with allowing
dots in the username. In particular chown declares ":" as the official
separator, and internally in systemd we never rely on "." as the seperator
between user and group (nor do we call chown directly). Using dots in the name
is probably not a very good idea, but we don't need to care. Debian tools
(adduser) do not allow users with dots to be created.
This patch allows *existing* names with dots to be used in User, Group,
SupplementaryGroups, SocketUser, SocketGroup fields, both in unit files and on
the command line. DynamicUsers and sysusers still follow the strict policy.
user@.service and tmpfiles already allowed arbitrary user names, and this
remains unchanged.
shared/user-util: add compat forms of user name checking functions
New functions are called valid_user_group_name_compat() and
valid_user_group_name_or_id_compat() and accept dots in the user
or group name. No functional change except the tests.
This fixes #13276. I think current rules are extremely confusing, as the
case in test-networkd-conf shows. We apply some kinds of unescaping (relating
to quoting), but not others (related to escaping of special characters).
But fixing this is hard, because people have adjusted quoting to match
our rules, and if we make the rules "better", things might break in unexpected
places.
Dan Streetman [Thu, 15 Aug 2019 20:27:05 +0000 (16:27 -0400)]
test: increase qemu timeout for TEST-18 and TEST-19
These tests runs under qemu, and on some testbeds, without acceleration.
On those systems, the current 180 second overall test timeout is too
short to run the test.
Increasing the timeout to 600s should be enough, even for slow
non-accelerated qemu testbeds.
Yu Watanabe [Sun, 18 Aug 2019 15:04:37 +0000 (00:04 +0900)]
network: do not check deprecated flag in address_is_ready()
Without this change, the address with PreferredLifetime=0 cannot be ready,
and thus, no consequent setting up process does not start.
The bug was introduced by 6aa5773.
Dan Streetman [Sat, 17 Aug 2019 16:24:00 +0000 (12:24 -0400)]
test/test-functions: add mkdir to import_initdir
This dir is created by create_empty_image_rootdir, as well as indirectly
by some other functions, but it should be created by import_initdir so
the newly-exported $initdir exists and can be used immediately without
relying on other functions to create it.
udev: allow persistent storage rules work for ubi devices
Back in dbbf424c8b77c1649e822c20c0b1fee1d2cfd93d, we merged a rule to add
persistent storage for /dev/ubi*, but this rule could have never worked because
of the top-level exclude.
udev: assume all devices which have persistent links also need to be watched
We had two similar lists, but one was accepting many more device types.
I assume that this is by mistake, simply because the lack of device links
is easier to notice than the lack of synthesized event after the device is
written to. This uses the same list in both places, effectively adding
"watch" attribute to /dev/nbd*, /dev/zd*, etc.
Dan Streetman [Tue, 13 Aug 2019 00:34:43 +0000 (20:34 -0400)]
src/boot/efi/meson.build: if meson --werror is true, set gcc -Werror
This part of the build does not use the normal meson parameters, so
we need to explicitly check for the meson --werror parameter, and if
it's true, set the gcc -Werror parameter for this subdir's build.
Dan Streetman [Tue, 13 Aug 2019 11:02:33 +0000 (07:02 -0400)]
src/boot/efi/linux: elide __attribute__((regparm(0))) on non-i386
This attribute is x86_32-only, so when building on non-intel archs it
generates a compiler warning. When building with -Werror this turns
into an error, so only include the attribute on i386 arch builds.
Dan Streetman [Tue, 13 Aug 2019 10:45:04 +0000 (06:45 -0400)]
src/boot/efi/shim: elide __attribute__((sysv_abi)) on non-intel archs
This attribute is x86-only, so when building on non-intel archs it
generates a compiler warning. When building with -Werror this turns
into an error, so only include the attribute on intel archs.
Dan Streetman [Thu, 15 Aug 2019 01:08:36 +0000 (21:08 -0400)]
src/basic/missing_syscall: add comment lines for PR 13319 changes
Add a comment line explaining that the syscall defines might be
defined to invalid negative numbers, as libseccomp redefines them
to negative numbers if not defined by the kernel headers, which is
not obvious just from reading the code checking for defined && > 0
Since bug reports, backtraces, coverage reports and build logs are scattered
across at least four different places and there is no publicly available dashboards
the badge can point to, let's just point it to the build logs, which hopefully are going to be
a little bit more usable once https://github.com/google/oss-fuzz/issues/2690 is
addressed.
Tommi Rantala [Mon, 5 Aug 2019 11:01:58 +0000 (14:01 +0300)]
update-utmp: fix assertion failure if rescue.target, multi-user.target and graphical.target are all inactive
If rescue.target, multi-user.target and graphical.target are all
inactive, get_current_runlevel() is not able to determine current
runlevel, and returns with zero. This zero runlevel value results to
assertion failure in utmp_put_runlevel().
systemd[1]: Stopped target Graphical Interface.
systemd[1]: Stopped target Multi-User System.
systemd[1]: Starting Update UTMP about System Runlevel Changes...
systemd-update-utmp[67]: Assertion 'runlevel > 0' failed at src/shared/utmp-wtmp.c:275, function utmp_put_runlevel(). Aborting.
systemd[1]: systemd-update-utmp-runlevel.service: Main process exited, code=dumped, status=6/ABRT
systemd[1]: systemd-update-utmp-runlevel.service: Failed with result 'core-dump'.
systemd[1]: Failed to start Update UTMP about System Runlevel Changes.
Let's just print a warning in this case and skip the utmp update, to
avoid systemd-update-utmp-runlevel.service failures.
sysusers: properly mark generated accounts as locked
Previously, we'd only set the shell to /usr/bin/nologin and lock the
password for system users. Let's go one step further and also lock the
whole account.
This is a paranoid safety precaution, since neither disabling the shell
like this nor disabling the password is sufficient to lock an account,
since remote shell tools generally allow passing different shells, and
logins into ftp or similar protocols don't know the shell concept anyway.
Moreover, in times of ssh authentication by password is just one
option of authentication among many.
Takes inspiration from the recommendations in usermod(8)'s -L switch:
"Note: if you wish to lock the account (not only access with a
password), you should also set the EXPIRE_DATE to 1."
Dan Streetman [Thu, 25 Jul 2019 11:57:30 +0000 (07:57 -0400)]
src/basic/missing_syscall: change #ifndef to #if ! (defined && > 0)
The #ifndef check used to work for missing __NR_* syscall defines, but
unfortunately libseccomp now redefines missing syscall number to negative
numbers, in their public header file, e.g.:
https://github.com/seccomp/libseccomp/blob/master/include/seccomp.h.in#L801
When systemd is built, since it includes <seccomp.h>, it pulls in the
incorrect negative value for any __NR_* syscall define that's included in
the seccomp.h header (for those syscalls that the kernel headers don't
yet define, e.g. when built with older/stable-distro kernels). This leads
to bugs like:
https://bugs.launchpad.net/ubuntu/+source/systemd/+bug/1821625
This changes the check so that it can override the negative number that
libseccomp defines, instead of trying to use the negative syscall number.
To avoid gcc warnings (which are failures with meson --werror), this checks
without generating a redefinition gcc warning.
I have no idea why libseccomp decided to define missing syscalls
to negative numbers inside their *public* header file, causing
problems like this.
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