Kernel default mode is 0600, but distributions change it to group kvm, mode
either 0660 (e.g. Debian) or 0666 (e.g. Fedora). Both approaches have valid
reasons (a stricter mode limits exposure to bugs in the kvm subsystem, a looser
mode makes libvirt and other virtualization mechanisms work out of the box for
unprivileged users over ssh).
In Fedora the qemu package carries the relevant rule, but it's nicer to have it
in systemd, so that the permissions are not dependent on the qemu package being
installed. Use of packaged qemu binaries is not required to make use of
/dev/kvm, e.g. it's possible to use a self-compiled qemu or some alternative.
https://bugzilla.redhat.com/show_bug.cgi?id=1431876
To accomodate both approaches, add a rule to set the mode in 50-udev-default.rules,
but allow the mode to be overridden with a --with-dev-kvm-mode configure rule.
The default is 0660, as the (slightly) more secure option.
The legacy *.pkla files are not required when running against polkit ≥ 106,
and we want to avoid shipping files in /var if possible (but pkla files
can only be in /etc/ or /var).
Only install the *.pkla files if we detect an old polkit version during
configure. Don't install them if polkit isn't installed during build, as
distributions other than Debian-based ones have moved to the new polkit
long ago.
Fixes#5523
It is expected that general-purpose distributions might want to override this.
This commit is made separate from grandparent to make it easy to revert if
needed.
v2:
- use hybrid as the default
(We tested that the default of unified seems boot correctly everywhere and behave
correctly in general, but it is incompatible with docker/lxc and probably some
other tools, so for now we default to hybrid. The new "hybrid" mode should work
be OK for those tools.)
Fixes#4669.
We have ./configure switches for various parts of non-essential functionality,
let's add one for this new stuff too. Support for environment generators is
not conditional — if you don't want them, just don't install any.
This is pretty important, and we print this string during startup, so putting
the default hierarchy information might help with diagnosis if things go awry.
$ ./systemctl --version
systemd 232
+PAM +AUDIT +SELINUX +IMA -APPARMOR +SMACK +SYSVINIT +UTMP +LIBCRYPTSETUP +GCRYPT +GNUTLS +ACL +XZ +LZ4 +SECCOMP +BLKID +ELFUTILS +KMOD +IDN default-hierarchy=legacy
v2: make the message nicer by including the ./configure option argument
directly in output
The default default is set to "legacy", with "hybrid" and "unified"
being the other two alternatives.
There invert the behaviour for systemd.legacy_systemd_cgroup_controller:
if it is not specified on the kernel command line, "hybrid" is used if
selected as the default. If this option is specified, "hybrid" is used if false,
and full "legacy" if true.
Also make all fields in the configure summary lowercase (unless they are
capitalized names) for consistency.
v2:
- update for the fixed interpreation of systemd.legacy_systemd_cgroup_controller
explicit_bzero was added in glibc 2.25. Make use of it.
explicit_bzero is hardcoded to zero the memory, so string erase now
truncates the string, instead of overwriting it with 'x'. This causes
a visible difference only in the journalctl case.
Ubuntu 14.04 (Trusty) kernel header packages ship without
<linux/vm_sockets.h>. Only struct sockaddr_vm and VMADDR_CID_ANY will
be needed by systemd and they are simple enough to go in missing.h.
CentOS 7 <sys/socket.h> does not define AF_VSOCK. Define it so the code
can compile although actual socket(2) calls may fail at runtime if the
address family isn't available.
gperf-3.1 generates lookup functions that take a size_t length
parameter instead of unsigned int. Test for this at configure time.
Fixes: https://github.com/systemd/systemd/issues/5039
"sushell" is a Fedora-specific concept, shipped as part of
"initscripts". We shouldn't actively search for it if we can avoid it.
Hence, lets now default to /bin/sh as debug shell on all systems, and
permit Fedora to override that for their RPMs via --with-debug-shell= at
configure time.
We currently don't expect any warnings about format strings, on any
architecture (#4612 removed the last few warnings). Turn those warnings into
errors in the future.
As requested by Martin Pitt.
gcc documentation says that -Wformat=2 includes -Wformat-security and
-Wformat-nonliteral so don't include them explicitly.
Let's start placing our D-Bus policy files in /usr rather than /etc. D-Bus
supports this since 1.9.18, and moving our files over means we continue to work
even if /etc is flushed out entirely (for example if systemd-nspawn's
--volatile= switch is used).
Since 1.9.18 was released summer 2015 it should be fine to require a newer
version like this for our builds.
https://lists.freedesktop.org/archives/dbus/2015-July/016746.html
lz4 upstream decided to switch to an incompatible numbering scheme
(1.7.3 follows 131, to match the so version).
PKG_CHECK_MODULES does not allow two version matches for the same package,
so e.g. lz4 < 10 || lz4 >= 125 cannot be used. Check twice, once for
"new" numbers (anything below 10 is assume to be new), once for the "old"
numbers (anything above >= 125). This assumes that the "new" versioning
will not get to 10 to quickly. I think that's a safe assumption, lz4 is a
mature project.
Fixed#4690.
Link: port to new ethtool ETHTOOL_xLINKSETTINGS
This patch defines a new ETHTOOL_GLINKSETTINGS/SLINKSETTINGS API,
handled by the new get_link_ksettings/set_link_ksettings .
This is a WIP version based on this [kernel
patch](https://patchwork.kernel.org/patch/8411401/).
commit 0527f1c
3f1ac7a700ommit
35afb33
The check for the setcap binary was added in commit
dd5ae4c36c to set the CAP_MAC_ADMIN
capability for systemd-bus-proxyd. Later on, bus-proxyd was removed in
commit 798c486fbc.
So remove the leftover setcap configure check as well.
It's pointless to call AC_SUBST more than once on the same variable. Because
of all the copypasta, we were mixing CLFAGS and LDFLAGS.
… and the assertion in previous commit was wrong. PPC64 is a special snowflake.
__SANE_USERSPACE_TYPES__ is needed on PPC64 to make __u64 be llu, instead of
lu. Considering that both lu and llu are 64 bits, there's nothing sane about
this, maybe the flag should be called __INSANE_USERSPACE_TYPES__ instead. Sane
or not, this makes ppc64 kernel headers behave consistent with other
architectures. With this flag, no warnings are emitted at -O0 level.
Let's extend nss-systemd to also synthesize user/group entries for the
UIDs/GIDs 0 and 65534 which have special kernel meaning. Given that nss-systemd
is listed in /etc/nsswitch.conf only very late any explicit listing in
/etc/passwd or /etc/group takes precedence.
This functionality is useful in minimal container-like setups that lack
/etc/passwd files (or only have incompletely populated ones).
Let's allow distros to change the support URL to expose in catalog entries by
default. It doesn't make sense to direct end-users to the upstream project for
common errors.
This adds a --with-support-url= switch to configure, which allows overriding
the default at build-time.
Fixes: #2516
Delete the dbus1 generator and some critical wiring. This prevents
kdbus from being loaded or detected. As such, it will never be used,
even if the user still has a useful kdbus module loaded on their system.
Sort of fixes#3480. Not really, but it's better than the current state.
This permits services to detect whether their stdout/stderr is connected to the
journal, and if so talk to the journal directly, thus permitting carrying of
metadata.
As requested by the gtk folks: #2473
Fix issue where IN6_ADDR_GEN_MODE_STABLE_PRIVACY is undefined but
IFLA_INET6_ADDR_GEN_MODE is defined and thus the former does not get
fixed in missing.h. This occurs with kernel headers new enough to have
the IFLA_INET6_ADDR_GEN_MODE but old enough to not yet have
IN6_ADDR_GEN_MODE_STABLE_PRIVACY (e.g. 3.18).
In 4.2 kernel headers, some netlink defines are missing that we need. missing.h
already can add them in, but currently makes this dependent on a definition
that these kernels already have. Change the check hence to check for the newest
definition in the table, so that the whole bunch of definitions as added in on
all kernels lacking this.
Zbigniew Jędrzejewski-Szmek