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Introduce rootpkglibdir for installing libsystemd-{shared,core}.so.
The benefit over using rootlibexecdir is that this path can be
multiarch aware, i.e. this path can be architecture qualified.
This is something we'd like to make use of in Debian/Ubuntu to make
libsystemd-shared co-installable, e.g. for i386 the path would be
/usr/lib/i386-linux-gnu/systemd/libsystemd-shared-*.so and for amd64
/usr/lib/x86_64-linux-gnu/systemd/libsystemd-shared-*.so.
This will allow for example to install and run systemd-boot/i386 on an
amd64 host. It also simplifies/enables cross-building/bootstrapping.
For more infos about Multi-Arch see https://wiki.debian.org/Multiarch.
See also https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=990547
New directive `NetLabel=` provides a method for integrating dynamic network
configuration into Linux NetLabel subsystem rules, used by Linux security
modules (LSMs) for network access control. The option expects a whitespace
separated list of NetLabel labels. The labels must conform to lexical
restrictions of LSM labels. When an interface is configured with IP addresses,
the addresses and subnetwork masks will be appended to the NetLabel Fallback
Peer Labeling rules. They will be removed when the interface is
deconfigured. Failures to manage the labels will be ignored.
Example:
```
[DHCP]
NetLabel=system_u:object_r:localnet_peer_t:s0
```
With the above rules for interface `eth0`, when the interface is configured with
an IPv4 address of 10.0.0.0/8, `systemd-networkd` performs the equivalent of
`netlabelctl` operation
```
$ sudo netlabelctl unlbl add interface eth0 address:10.0.0.0/8 label:system_u:object_r:localnet_peer_t:s0
```
Result:
```
$ sudo netlabelctl -p unlbl list
...
interface: eth0
address: 10.0.0.0/8
label: "system_u:object_r:localnet_peer_t:s0"
...
```
This reverts commit 0bd292567a.
It isn't guaranteed anywhere that __builtin_dynamic_object_size can
always deduce the size of every object passed to it so systemd
can end up using either malloc_usable_size or
__builtin_dynamic_object_size when pointers are passed around,
which in turn can lead to actual segfaults like the one mentioned in
https://github.com/systemd/systemd/issues/23619.
Apparently __builtin_object_size can return different results for
pointers referring to the same memory as well but somehow it hasn't
caused any issues yet. Looks like this whole
malloc_usable_size/FORTIFY_SOURCE stuff should be revisited.
Closes https://github.com/systemd/systemd/issues/23619 and
https://github.com/systemd/systemd/issues/23150.
Reopens https://github.com/systemd/systemd/issues/22801
This is what's most likely used to build systemd with clang in
practice so let's test it as well.
Preparation for reverting 0bd292567a
(which replaced bogus buffer overflow found with _FORTIFY_SOURCE=3
with actual segfaults).
../src/journal-remote/microhttpd-util.c: In function ‘check_permissions’:
../src/journal-remote/microhttpd-util.c:301:5: error: function might be candidate for attribute ‘noreturn’ [-Werror=suggest-attribute=noreturn]
301 | int check_permissions(struct MHD_Connection *connection, int *code, char **hostname) {
| ^~~~~~~~~~~~~~~~~
cc1: all warnings being treated as errors
Fixes#23630.
We're already using C.UTF-8 as the default locale for nspawn. Let's
make the same change for the default-locale option instead of deciding
what to use based on the locale used by the host system. Users can
still override the locale using the default-locale option if needed.
If rngd is included in the host initrd, QEMU guests need at least one source of
entropy otherwise rngd will refuse to start. Hence this patch enables the
virtio RNG device in QEMU guests (exposed as a HW RNG device available at
/dev/hwrng).
As a safety measure, the patch limits the data sent to the guest to 1KB per
second in order to not let the guest starve the host entropy.
In file included from ../src/basic/siphash24.h:11,
from ../src/basic/hash-funcs.h:6,
from ../src/basic/hashmap.h:8,
from ../src/shared/fdset.h:6,
from ../src/shared/bpf-program.h:9,
from ../src/core/unit.h:11,
from ../src/core/all-units.h:4,
from ../src/core/manager.c:23:
../src/basic/time-util.h: In function 'manager_dispatch_jobs_in_progress':
../src/basic/time-util.h:140:38: error: 'x' may be used uninitialized [-Werror=maybe-uninitialized]
140 | #define FORMAT_TIMESPAN(t, accuracy) format_timespan((char[FORMAT_TIMESPAN_MAX]){}, FORMAT_TIMESPAN_MAX, t, accuracy)
| ^~~~~~~~~~~~~~~
In function 'manager_print_jobs_in_progress',
inlined from 'manager_dispatch_jobs_in_progress' at ../src/core/manager.c:3007:9:
../src/core/manager.c:219:18: note: 'x' was declared here
219 | uint64_t x;
| ^
cc1: all warnings being treated as errors
For some reason this (false positive) warning starts appearing after
-ftrivial-auto-var-init is used.
When something goes awry, we would get identical log messages from all the
bpf subsystems. E.g. "Failed to load BPF object: %m" appeared 5 times in the
sources. But it is very important to know *which* object we failed to load.
This could be guessed, e.g. from surroudning messages or from filename/line
metadata, but when we get log messages in bug reports, this might not be
available. Let's make the messages distinguishable.
While at it, some messages were adjusted a bit. In particular, we shouldn't use
internal names like BPFProgram which have no meaning outside of the codebase.
Testing the error paths is very important. If we are not root, we should
try and get a failure, which we should report nicely and mark the test
as skipped. After those checks are removed, this is what seems to happen.
This way we can see what will happen e.g. in the user manager when we try
to perform some bpf ops.
$ build/test-socket-bind
...
libbpf: load bpf program failed: Operation not permitted
libbpf: failed to load program 'sd_bind4'
libbpf: failed to load object 'socket_bind_bpf'
libbpf: failed to load BPF skeleton 'socket_bind_bpf': -1
Failed to load BPF object: Operation not permitted
Now all lines with "libbpf:" are at debug level and will be hidden by
default.
Partially fixes https://bugzilla.redhat.com/show_bug.cgi?id=2084955#c14
(i.e. the error that was exposed when the initial error was fixed.)
find_socket_fd() does not expect the sender address, but the
listen-address. This is in fact the destination of the DNS packet.
Matching via sender address caused a fallback to the default stub
listener in manager_dns_stub_fd() as the sender address can never
match the proxy stub listen address.
Note that manager_dns_stub_fd() is only used for the default
listener stub and the proxy stub, that means *extra* listeners
stubs (DNSStubListenerExtra=…) have not been affected as
`struct DnsStubListenerExtra` provides a direct link to the event
source.
By using the correct fd we ensure the correct socket options
(like TTL) are used and prevent issues like #23495 in case ifindex
could not be determined.
