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22 Commits

Author SHA1 Message Date
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
Peter Körner
bd9bb4ca61 sysctl.d: replace URL of SysRq key documentation (#5274)
The kernel documentation page is not distribution specific and also more
likely to be up to date than the Fedora wiki page referenced previously.
2017-02-08 19:42:43 +01:00
Torstein Husebø
61233823aa treewide: fix typos and remove accidental repetition of words 2016-07-11 16:18:43 +02:00
Lennart Poettering
bdfd7b2c63 coredump: honour RLIMIT_CORE when saving/processing coredumps
With this change processing/saving of coredumps takes the RLIMIT_CORE resource limit of the crashing process into
account, given the user control whether specific processes shall core dump or not, and how large to make the core dump.

Note that this effectively disables core-dumping for now, as RLIMIT_CORE defaults to 0 (i.e. is disabled) for all
system processes.
2016-02-10 16:08:32 +01:00
Lennart Poettering
d1fcdcd87a sysctl: use %P instead of %p in core pattern
That way we'll get the PID on the host, rather than the one in a PID
namespace. Which should make the coredump handler less confusing.

Fixes #1930.
2015-11-17 17:32:49 +01:00
Lennart Poettering
19854865a8 core: bump net.unix.max_dgram_qlen really early during boot
Only that way it actually has an effect on all our sockets, including
$NOTIFY_SOCKET.
2015-11-02 23:44:05 +01:00
Lennart Poettering
cacea34bd1 sysctl.d: bump number of queueable AF_UNIX/SOCK_DGRAM datagrams
The default of 16 is pretty low, let's bump this to accomodate for more
queued datagrams. This is useful for AF_UNIX/SOCK_DGRAM logging and
sd_notify() sockets as this allows queuing more datagrams before things
start to block, thus improving parallelization and logging performance.
2015-10-31 19:09:20 +01:00
Zbigniew Jędrzejewski-Szmek
16b65d7f46 sysctl: add some hints how to override settings
Also a link to decent documentation for sysrq keys. It is surprising
hard to find.

https://lists.fedoraproject.org/pipermail/devel/2015-February/208412.html
2015-02-26 19:07:38 -05:00
Michal Schmidt
e6c253e363 sysctl.d: default to fq_codel, fight bufferbloat
Quoting from Jon Corbet's report of Stephen Hemminger's talk at Linux
Plumbers Conference 2014 (https://lwn.net/Articles/616241/):

    [...] So Stephen encouraged everybody to run a command like:

    sysctl -w net.core.default_qdisc=fq_codel

    That will cause fq_codel to be used for all future connections
    [Qdiscs apply to interfaces, not connections. Pointed out by TomH
    in the article comments. -- mschmidt] (up to the next reboot).
    Unfortunately, the default queuing discipline cannot be changed,
    since it will certainly disturb some user's workload somewhere.

Let's have the recommended default in systemd.

Thanks to Dave Täht for advice and the summary at
https://lists.bufferbloat.net/pipermail/cerowrt-devel/2014-October/003701.html
2014-10-20 18:19:00 +02:00
Lennart Poettering
1836bf9e1d sysctl: always write net.ipv4.conf.all.xyz= in addition to net.ipv4.conf.default.xyz=
Otherwise we have a boot-time race, where interfaces that popped up
after the sysctl service would get the settings applied, but all others
wouldn't.
2014-08-15 12:07:33 +02:00
Tom Gundersen
ad8bc9ea50 sysctl.d: enable promote_secondaries by default
Without this, secondary addresses would get deleted when the primary one is. This is not
the desired behavior when one would like to transition from one address to another in the
same subnet (such as when a new IP address is given over DHCP).

In networkd, when given a new IP over DHCP we will add it, without explicitly removing the
old one first (and hence never have a window without an IP address configured). Assuming the
addresses are in the same subnet, that means that the old address is the primary and the new
address is the secondary one. Once the old address expires, the kernel will drop it. With the
old behavior this means that both addresses would be lost, which is clearly not what we want.
With the new behavior, only the old address is lost, and the new one is promoted to primary.

Reported by Michael Olbrich <m.olbrich@pengutronix.de>
2014-07-25 11:18:12 +02:00
Zbigniew Jędrzejewski-Szmek
5146e7e8ae man: add systemd-coredump(8) and a bunch of links 2014-07-13 21:11:07 -04:00
Kay Sievers
0f59fe5171 sysctl: default - add safe sysrq options 2013-03-15 19:30:53 +01:00
Kay Sievers
8f27a2212e sysctl: add 50-default.conf 2013-03-15 16:37:58 +01:00
Kay Sievers
94c525f076 sysctl: coredump.conf -> 50-coredump.conf 2013-03-15 15:59:21 +01:00
Zbigniew Jędrzejewski-Szmek
1d98d9a62c man: fix compilation of example 2013-03-07 00:45:56 -05:00
Lennart Poettering
5430f7f2bc relicense to LGPLv2.1 (with exceptions)
We finally got the OK from all contributors with non-trivial commits to
relicense systemd from GPL2+ to LGPL2.1+.

Some udev bits continue to be GPL2+ for now, but we are looking into
relicensing them too, to allow free copy/paste of all code within
systemd.

The bits that used to be MIT continue to be MIT.

The big benefit of the relicensing is that closed source code may now
link against libsystemd-login.so and friends.
2012-04-12 00:24:39 +02:00
Lennart Poettering
f5e04665eb journal: hook up coredumping with journal 2012-01-14 01:54:33 +01:00