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Commit Graph

104 Commits

Author SHA1 Message Date
Lennart Poettering
6e11e7e67d nologin: extend the /run/nologin descriptions a bit (#8244)
This is an attempt to improve #8228 a bit, by extending the /run/nologin
a bit, but still keeping it somewhat brief.

On purpose I used the vague wording "unprivileged user" rather than
"non-root user" so that pam_nologin can be updated to disable its
behaviour for members of the "wheel" group one day, and our messages
would still make sense.

See #8228.
2018-02-22 14:21:30 +01:00
Zbigniew Jędrzejewski-Szmek
3a726fcd08 Add license headers and SPDX identifiers to meson.build files
So far I avoided adding license headers to meson files, but they are pretty
big and important and should carry license headers like everything else.
I added my own copyright, even though other people modified those files too.
But this is mostly symbolic, so I hope that's OK.
2017-11-19 19:08:15 +01:00
Dimitri John Ledkov
e6b2d948f8 resolved: create private stub resolve file for /etc/resolv.conf integration (#7014)
This creates a second private resolve.conf file which lists the stub resolver
and the resolved acquired search domains.

This runtime file should be used as a symlink target for /etc/resolv.conf such
that non-nss based applications can resolve search domains.

Fixes: #7009
2017-10-24 15:28:41 +02:00
Frederic Crozat
4a1f92c704 tmpfiles: remove old ICE and X11 sockets at boot (#6979)
tmpfiles: remove old ICE and X11 sockets at boot

When not using tmpfs based /tmp, leftover sockets
might prevent X startup. Ensure directory is clean at boot time.
2017-10-06 01:28:19 +02:00
Lennart Poettering
f6e64b78cc tmpfiles: change btmp mode 0600 → 0660 (#6997)
As discussed in #6994.

Fixes: #6994
2017-10-04 21:44:29 +02:00
Zbigniew Jędrzejewski-Szmek
1ec57f3394 build-sys: s/ENABLE_RESOLVED/ENABLE_RESOLVE/
The configuration option was called -Dresolve, but the internal define
was …RESOLVED. This options governs more than just resolved itself, so
let's settle on the version without "d".
2017-10-04 12:09:51 +02:00
Zbigniew Jędrzejewski-Szmek
3211da4bcb build-sys: s/HAVE_UTMP/ENABLE_UTMP/
"Have" should be about the external environment and dependencies. Anything
which is a pure yes/no choice should be "enable".
2017-10-04 12:09:50 +02:00
Zbigniew Jędrzejewski-Szmek
349cc4a507 build-sys: use #if Y instead of #ifdef Y everywhere
The advantage is that is the name is mispellt, cpp will warn us.

$ git grep -Ee "conf.set\('(HAVE|ENABLE)_" -l|xargs sed -r -i "s/conf.set\('(HAVE|ENABLE)_/conf.set10('\1_/"
$ git grep -Ee '#ifn?def (HAVE|ENABLE)' -l|xargs sed -r -i 's/#ifdef (HAVE|ENABLE)/#if \1/; s/#ifndef (HAVE|ENABLE)/#if ! \1/;'
$ git grep -Ee 'if.*defined\(HAVE' -l|xargs sed -i -r 's/defined\((HAVE_[A-Z0-9_]*)\)/\1/g'
$ git grep -Ee 'if.*defined\(ENABLE' -l|xargs sed -i -r 's/defined\((ENABLE_[A-Z0-9_]*)\)/\1/g'
+ manual changes to meson.build

squash! build-sys: use #if Y instead of #ifdef Y everywhere

v2:
- fix incorrect setting of HAVE_LIBIDN2
2017-10-04 12:09:29 +02:00
Lukáš Nykrýn
9c63ba988d tmpfiles.d/journal-nocow: fix typo (#6804) 2017-09-12 13:28:21 -03:00
Yu Watanabe
29444df23b tmpfiles: drop systemd-remote.conf
The directories are only used by the specific services, and
created before the services are started. So, it is not necessary
to create them by systemd-tmpfiles.
2017-08-08 12:17:07 +09:00
Zbigniew Jędrzejewski-Szmek
e5f752082e build-sys: drop gitignore patterns for in-tree builds
... and other autotools-generated files.
2017-07-18 10:05:06 -04:00
Zbigniew Jędrzejewski-Szmek
72cdb3e783 build-sys: drop automake support
v2:
- also mention m4
2017-07-18 10:04:44 -04:00
Michael Biebl
aff804febc tmpfiles: create /var/log/lastlog if it does not exist
Create /var/log/lastlog the same way we create utmp and wtmp.
This is useful for stateless systems where /var is volatile and a
missing /var/log/lastlog otherwise creates error messages like

Jun 27 20:00:00 huron sshd[1234]: lastlog_openseek: Couldn't stat /var/log/lastlog: No such file or directory

Fixes #6234
2017-06-29 08:01:37 +02:00
Yu Watanabe
525e9db3b3 meson: do not use path separator for target name (#6177)
Fixes #6158.
2017-06-22 21:27:07 -04:00
Franck Bui
f47183183c build: *really* install tmpfiles.d/systemd-remote.conf when necessary (#6061)
This fixes commit 5e354b2252 which was an attempt to avoid installation
of tmpfiles.d/systemd-remote.conf when it was not needed (ie HAVE_REMOTE=false).

Before this fix and with the autotool build, systemd-remote.conf was
distributed and also installed (although it was empty) even though
HAVE_REMOTE=false.

That's what happens when doing last second changes without retesting...

While at it, update tmpfiles.d/.gitignore (var.conf was missing as well
since commit a083537e5d).
2017-05-31 09:44:08 -04:00
Franck Bui
5e354b2252 build: only install tmpfiles.d/systemd-remote.conf when necessary (#6051)
Also only include the relevant parts for systemd-journal-remote and
systemd-journal-upload when needed.
2017-05-30 13:27:26 -04:00
codekipper
a083537e5d tmpfiles: Remove unnecessary utmp file creation (#6006)
If utmp is disabled (--disable-utmp) then there is no need to create
the wtmp and btmp files.
2017-05-24 11:10:59 +02:00
Zbigniew Jędrzejewski-Szmek
2c201c2140 meson: use booleans for conf.set and drop unecessary conditionals
Using conf.set() with a boolean argument does the right thing:
either #ifdef or #undef. This means that conf.set can be used unconditionally.

Previously I used '1' as the placeholder value, and that needs to be changed to
'true' for consistency (under meson 1 cannot be used in boolean context). All
checks need to be adjusted.
2017-05-02 16:29:11 -04:00
Zbigniew Jędrzejewski-Szmek
37efbbd821 meson: reindent all files with 8 spaces
The indentation for emacs'es meson-mode is added .dir-locals.

All files are reindented automatically, using the lasest meson-mode from git.
Indentation should now be fairly consistent.
2017-04-23 21:47:29 -04:00
Michael Biebl
e17e5ba9bf meson: use join_paths consistently
With -Dsplit-usr=true, we set rootprefix to /. This leads to //lib/systemd or
//lib/udev for various dir variables. Using join_paths() avoids this.
2017-04-23 21:47:28 -04:00
Zbigniew Jędrzejewski-Szmek
94e75a5409 meson: create dirs and touch /usr
This is the equivalent of $(INSTALL_DIRS) and install-touch-usr-hook.
I did not bother to create the directories into which we install files,
since they will be created anyway.

v2:
- remove bashism
2017-04-23 21:47:27 -04:00
Zbigniew Jędrzejewski-Szmek
5c23128dab meson: build systemd using meson
It's crucial that we can build systemd using VS2010!

... er, wait, no, that's not the official reason. We need to shed old systems
by requring python 3! Oh, no, it's something else. Maybe we need to throw out
345 years of knowlege accumulated in autotools? Whatever, this new thing is
cool and shiny, let's use it.

This is not complete, I'm throwing it out here for your amusement and critique.

- rules for sd-boot are missing. Those might be quite complicated.

- rules for tests are missing too. Those are probably quite simple and
  repetitive, but there's lots of them.

- it's likely that I didn't get all the conditions right, I only tested "full"
  compilation where most deps are provided and nothing is disabled.

- busname.target and all .busname units are skipped on purpose.

  Otherwise, installation into $DESTDIR has the same list of files and the
  autoconf install, except for .la files.

It'd be great if people had a careful look at all the library linking options.
I added stuff until things compiled, and in the end there's much less linking
then in the old system. But it seems that there's still a lot of unnecessary
deps.

meson has a `shared_module` statement, which sounds like something appropriate
for our nss and pam modules. Unfortunately, I couldn't get it to work. For the
nss modules, we need an .so version of '2', but `shared_module` disallows the
version argument. For the pam module, it also didn't work, I forgot the reason.

The handling of .m4 and .in and .m4.in files is rather awkward. It's likely
that this could be simplified. If make support is ever dropped, I think it'd
make sense to switch to a different templating system so that two different
languages and not required, which would make everything simpler yet.

v2:
- use get_pkgconfig_variable
- use sh not bash
- use add_project_arguments

v3:
- drop required:true and fix progs/prog typo

v4:
- use find_library('bz2')
- add TTY_GID definition
- define __SANE_USERSPACE_TYPES__
- use join_paths(prefix, ...) is used on all paths to make them all absolute

v5:
- replace all declare_dependency's with []
- add more conf.get guards around optional components

v6:
- drop -pipe, -Wall which are the default in meson
- use compiler.has_function() and compiler.has_header_symbol instead of the
  hand-rolled checks.
- fix duplication in 'liblibsystemd' library name
- use the right .sym file for pam_systemd
- rename 'compiler' to 'cc': shorter, and more idiomatic.

v7:
- use ENABLE_ENVIRONMENT_D not HAVE_ENVIRONMENT_D
- rename prefix to prefixdir, rootprefix to rootprefixdir
  ("prefix" is too common of a name and too easy to overwrite by mistake)
- wrap more stuff with conf.get('ENABLE...') == 1
- use rootprefix=='/' and rootbindir as install_dir, to fix paths under
  split-usr==true.

v8:
- use .split() also for src/coredump. Now everything is consistent ;)
- add rootlibdir option and use it on the libraries that require it

v9:
- indentation

v10:
- fix check for qrencode and libaudit

v11:
- unify handling of executable paths, provide options for all progs

  This makes the meson build behave slightly differently than the
  autoconf-based one, because we always first try to find the executable in the
  filesystem, and fall back to the default. I think different handling of
  loadkeys, setfont, and telinit was just a historical accident.

  In addition to checking in $PATH, also check /usr/sbin/, /sbin for programs.
  In Fedora $PATH includes /usr/sbin, (and /sbin is is a symlink to /usr/sbin),
  but in Debian, those directories are not included in the path.

  C.f. https://github.com/mesonbuild/meson/issues/1576.

- call all the options 'xxx-path' for clarity.
- sort man/rules/meson.build properly so it's stable
2017-04-23 21:47:26 -04:00
lewo
15fcdc98cf tmpfiles.d: set primary group rights to r-w (#5265)
If the /var/log/journal directory is created with rigths 700, the application
of an ACL rules without any primary group right sets it to 0. A chmod 755 on
this file will then only set the ACL mask and let the ACL primary group right
to 0. The directory is then unreadable for the primary group.

This patch explicitly sets the primary group to avoid this problem.

Fixes #5264.
2017-02-07 18:56:55 -05:00
Lennart Poettering
dc7621a571 tmpfiles: automatically remove old private tmp dirs after reboot
Let's automatically destory per-unit private temporary directories, as
they are created by PrivateTmp=yes on each boot, if we notice them to be
around, in case they are left-overs from the last boot.

Fixes: #4401
2016-12-27 23:54:02 +01:00
Torstein Husebø
61233823aa treewide: fix typos and remove accidental repetition of words 2016-07-11 16:18:43 +02:00
Lennart Poettering
b30bf55d5c resolved: respond to local resolver requests on 127.0.0.53:53
In order to improve compatibility with local clients that speak DNS directly
(and do not use NSS or our bus API) listen locally on 127.0.0.53:53 and process
any queries made that way.

Note that resolved does not implement a full DNS server on this port, but
simply enough to allow normal, local clients to resolve RRs through resolved.
Specifically it does not implement queries without the RD bit set (these are
requests where recursive lookups are explicitly disabled), and neither queries
with DNSSEC DO set in combination with DNSSEC CD (i.e. DNSSEC lookups with
validation turned off). It also refuses zone transfers and obsolete RR types.
All lookups done this way will be rejected with a clean error code, so that the
client side can repeat the query with a reduced feature set.

The code will set the DNSSEC AD flag however, depending on whether the data
resolved has been validated (or comes from a local, trusted source).

Lookups made via this mechanisms are propagated to LLMNR and mDNS as necessary,
but this is only partially useful as DNS packets cannot carry IP scope data
(i.e. the ifindex), and hence link-local addresses returned cannot be used
properly (and given that LLMNR/mDNS are mostly about link-local communication
this is quite a limitation). Also, given that DNS tends to use IDNA for
non-ASCII names, while LLMNR/mDNS uses UTF-8 lookups cannot be mapped 1:1.

In general this should improve compatibility with clients bypassing NSS but
it is highly recommended for clients to instead use NSS or our native bus API.

This patch also beefs up the DnsStream logic, as it reuses the code for local
TCP listening. DnsStream now provides proper reference counting for its
objects.

In order to avoid feedback loops resolved will no silently ignore 127.0.0.53
specified as DNS server when reading configuration.

resolved listens on 127.0.0.53:53 instead of 127.0.0.1:53 in order to leave
the latter free for local, external DNS servers or forwarders.

This also changes the "etc.conf" tmpfiles snippet to create a symlink from
/etc/resolv.conf to /usr/lib/systemd/resolv.conf by default, thus making this
stub the default mode of operation if /etc is not populated.
2016-06-21 14:15:23 +02:00
Franck Bui
d428dd6ac9 tmpfiles: don't set the x bit for volatile system journal when ACL support is enabled (#3079)
When ACL support is enabled, systemd-tmpfiles-setup service sets the following
ACL entries to the volatile system journal:

   $ getfacl /run/log/journal/*/system.journal
   getfacl: Removing leading '/' from absolute path names
   # file: run/log/journal/xxx/system.journal
   # owner: root
   # group: systemd-journal
   user::rwx
   group::r--
   group🛞r-x
   group:adm:r-x
   mask::r-x
   other::---

This patch makes sure that the exec bit is not set anymore for the volatile
system journals.
2016-05-03 19:29:11 -04:00
Franck Bui
7178cd76f2 build-sys: allow references to adm group to be omitted (#3150) 2016-05-01 00:02:17 -04:00
Zbigniew Jędrzejewski-Szmek
2a998ffa1e build-sys: allow references to wheel group to be omitted
https://github.com/systemd/systemd/issues/2492
2016-02-17 23:47:23 -05:00
Martin Pitt
61f32bff61 tmpfiles: drop /run/lock/lockdev
Hardly any software uses that any more, and better locking mechanisms like
flock() have been available for many years.

Also drop the corresponding "lock" group from sysusers.d/basic.conf.in, as
nothing else is using this.
2016-02-01 12:16:24 +01:00
Yu Watanabe
dcdd441140 journal-remote: change owner of /var/log/journal/remote and create /var/lib/systemd/journal-upload 2016-01-15 15:19:52 +09:00
Zbigniew Jędrzejewski-Szmek
afae249efa tmpfiles: set acls on system.journal explicitly
https://github.com/systemd/systemd/issues/1397
2015-11-29 23:38:09 -05:00
Zbigniew Jędrzejewski-Szmek
57d5b3130c tmpfiles: also set acls on /var/log/journal
This way, directories created later for containers or for
journald-remote, will be readable by adm & wheel groups by default,
similarly to /var/log/journal/%m itself.

https://github.com/systemd/systemd/issues/1971
2015-11-29 18:37:01 -05:00
Lennart Poettering
822cd60135 tmpfiles.d: change all subvolumes to use quota
Let's make sure the subvolumes we create fit into a sensible definition
of a quota tree.
2015-10-22 01:59:25 +02:00
Sangjung Woo
1fab0cbafc smack: label /etc/mtab as "_" when '--with-smack-run-label' is enabled.
/etc/mtab should be labeled as "_", even though systemd has its own
smack label using '--with-smack-run-label' configuration. This is mainly
because all processes could read that file and the origin of this file
(i.e. /proc/mounts) is labeled as "_". This labels /etc/mtab as "_" when
'--with-smack-run-label' is enabled.
2015-09-10 21:52:39 +09:00
Lennart Poettering
8b258a645a tmpfiles: don't recursively descend into journal directories in /var
Do so only in /run. We shouldn't alter ACLs for existing files in /var,
but only for new files. If the admin made changes to the ACLs they
shouls stay in place.

We should still do recursive ACL changes for files in /run, since those
are not persistent, and will hence lack ACLs on every boot.

Also, /var/log/journal might be quit large, /run/log/journal is usually
not, hence we should avoid the recursive descending on /var, but not on
/run.

Fixes #534
2015-07-09 18:46:01 -03:00
Lennart Poettering
770b5ce4fc tmpfiles: automatically remove old machine snapshots at boot
Remove old temporary snapshots, but only at boot. Ideally we'd have
"self-destroying" btrfs snapshots that go away if the last last
reference to it does. To mimic a scheme like this at least remove the
old snapshots on fresh boots, where we know they cannot be referenced
anymore. Note that we actually remove all temporary files in
/var/lib/machines/ at boot, which should be safe since the directory has
defined semantics. In the root directory (where systemd-nspawn
--ephemeral places snapshots) we are more strict, to avoid removing
unrelated temporary files.

This also splits out nspawn/container related tmpfiles bits into a new
tmpfiles snippet to systemd-nspawn.conf
2015-06-15 19:28:55 +02:00
Colin Guthrie
bb243d471b tmpfiles: Fix comment typo 2015-06-01 09:27:47 +01:00
Zbigniew Jędrzejewski-Szmek
6921bf11fa tmpfiles: create /etc/resolv.conf symlink only on boot
We will create the symlink on boot as a fallback to provide name
resolution. But if the symlink was removed afterwards, it most likely
should not be recreated. Creating it only on boot also solves the
issue where it would be created prematurely during installation,
before the system was actually booted.

https://bugzilla.redhat.com/show_bug.cgi?id=1197204
2015-05-21 14:23:09 -04:00
Lennart Poettering
fed2b07ebc tmpfiles: make /home and /var btrfs subvolumes by default when booted up with them missing
This way the root subvolume can be left read-only easily, and variable
and user data writable with explicit quota set.
2015-04-21 17:43:55 +02:00
Lennart Poettering
451d691ae1 tmpfiles: there's no systemd-forbid-user-logins.service service 2015-04-21 17:43:55 +02:00
Goffredo Baroncelli
3a92e4ba47 tmpfiles: Add +C attrib to the journal files directories
Add the +C file attribute (NOCOW) to the journal directories, so that
the flag is inherited automatically for new journal files created in
them. The journal write pattern is problematic on btrfs file systems as
it results in badly fragmented files when copy-on-write (COW) is used:
the performances decreases substantially over time.

To avoid this issue, this tmpfile.d snippet sets the NOCOW attribute to
the journal files directories, so newly created journal files inherit
the NCOOW attribute that disables copy-on-write.

Be aware that the NOCOW file attribute also disables btrfs checksumming
for these files, and thus prevents btrfs from rebuilding corrupted files
on a RAID filesystem.

In a single disk filesystems (or filesystems without redundancy) it is
safe to use the NOCOW flags without drawbacks, since the journal files
contain their own checksumming.
2015-04-13 16:37:52 +02:00
Ross Burton
3b33b54273 tmpfiles.d: only copy /etc/pam.d if PAM is present
If HAVE_PAM isn't set then don't attempt to copy /etc/pam.d from the
factory, as it doesn't get installed.
2015-03-03 12:55:34 -05:00
Sangjung Woo
d109a95f3d tmpfiles: Remove unnecessary blank line when configured with "--disable-resolved"
This patch removes unnecessary blank line in
/usr/lib/tmpfiles.d/etc.conf when configured with "--disable-resolved".
(i.e. ENABLE_RESOLVED is not defined)
2015-02-02 16:46:00 +01:00
Zbigniew Jędrzejewski-Szmek
a48a62a1af tmpfiles: use ACL magic on journal directories 2015-01-22 01:14:53 -05:00
Lennart Poettering
5f129649b9 nspawn,machined: change default container image location from /var/lib/container to /var/lib/machines
Given that this is also the place to store raw disk images which are
very much bootable with qemu/kvm it sounds like a misnomer to call the
directory "container". Hence, let's change this sooner rather than
later, and use the generic name, in particular since we otherwise try to
use the generic "machine" preferably over the more specific "container"
or "vm".
2015-01-15 01:47:21 +01:00
Lennart Poettering
814f000872 tmpfiles.d: upgrade a couple of directories we create at boot to subvolumes
In particular we upgrade /var/lib/container, /var/tmp and /tmp to
subvolumes.
2014-12-28 02:08:40 +01:00
Łukasz Stelmach
5a16bc264c build-sys: configure the list of system users, files and directories
Choose which system users defined in sysusers.d/systemd.conf and files
or directories in tmpfiles.d/systemd.conf, should be provided depending
on comile-time configuration.
2014-11-30 23:50:19 -05:00
Martin Pitt
f148ae1489 tmpfiles.d: Fix directory name
The .service uses "/var/lib/container", not "containers".
2014-11-25 11:39:30 +01:00
Martin Pitt
797e7a51cd tmpfiles.d: Create /var/lib/containers
Create /var/lib/containers so that it exists with an appropriate mode. We want
0700 by default so that users on the host aren't able to call suid root
binaries in the container. This becomes a security issue if a user can enter a
container as root, create a suid root binary, and call that from the host.
(This assumes that containers are caged by mandatory access control or are
started as user).
2014-11-21 00:34:26 +01:00