sh/tmpfiles: tmpfiles.d support.

This is the baseline support for tmpfiles.d.

Still missing:
- SELinux relabel, pending upstream clarification
- LIBDIR vs multilib systems, pending upstream clarification
- Whitespace in paths?
- Clean support not implemented
- "x" exclude type not implemented

X-Gentoo-Bug: 396003
X-Gentoo-Bug-URL: https://bugs.gentoo.org/show_bug.cgi?id=396003
Signed-off-by: Robin H. Johnson <robbat2@gentoo.org>
sh/tmpfiles: Upstream clarifications & quoting fixes.

Upstream has clarified via IRC:
- hardcoding /usr/lib/ is an explicit choice. It should NOT consider
  $libdir at all.
- The z/Z relabel types should call restorecon, not chcon.
- Whitespace is not allowed in tmpfiles.d/*.conf path entries,
  but is allowed in globs results. Fixed quoting of path arguments for
  this.

Signed-off-by: Robin H. Johnson <robbat2@gentoo.org>
doc/net.example: Update bonding example

The newer bonding code using sysfs does not clearly show the most common
bond parameter: mode

Also include a path to the referenced kernel documentation for the other
settings.

X-Gentoo-Bug: 408333
X-Gentoo-Bug-URL: https://bugs.gentoo.org/show_bug.cgi?id=408333

Signed-off-by: Robin H. Johnson <robbat2@gentoo.org>
doc/net.example: Add warnings that changing MAC on bonds can break things.

In most cases, changing the MAC on a bond manually is wrong. The bonding
module will do it as needed to failover between interfaces, or to get
multiple interfaces to correctly have the same MAC.

We cannot however enforce it, as there are some corner cases where it is
actually valid (hardware that requires specific MAC configuration, like
some quad-port NICs).

Suggested-by: Martin Mokrejs <mmokrejs@fold.natur.cuni.cz>
Signed-off-by: Robin H. Johnson <robbat2@gentoo.org>
Document the required_dirs and required_files variables
init.d/sysctl.Linux: do not use sysctl -q

The -q option is not implemented by BusyBox, so instead of using that, make
it so that the standard error is caught, but standard output is thrown
away.

Note: the ordered behaviour of redirection is part of POSIX so we should be
on the safe side with this change, as first we duplicate the output
descriptor to be used as stderr, then we change the output descriptor to
point to NULL.

Signed-off-by: Diego Elio Pettenò <flameeyes@flameeyes.eu>
Allow files in sysctl.d to override sysctl.conf

reported-by: Peter Gantner (a.k.a. nephros) <gentoo@nephros.org>
X-Gentoo-Bug: 406631
X-Gentoo-Bug-URL: https://bugs.gentoo.org/show_bug.cgi?id=406631
sysctl: use @SYSCONFDIR@ in the scripts instead of hard coding /etc
localmount: Only unmount local filesystems if we are shutting down

Make the stop function in localmount only unmount file systems when the
system is going down.

reported-by: Alexey Prokopchuk <alexpro@homelan.lg.ua>
X-Gentoo-Bug: 407167
X-Gentoo-Bug-URL: https://bugs.gentoo.org/show_bug.cgi?id=407167
Add -lxc keyword to sysctl script for linux systems

Kernel parameters should not be set from inside a lxc guest.

Reported-by: Piotr Karbowski <piotr.karbowski@gmail.com>
librc: Do not output error messages from within the library.

This fixes a compile issue. Also, it is cleaner to have the client
output error messages as opposed to having the library do this.

Reported-by: Ewoud Kohl van Wijngaarden <gentoo@kohlvanwijngaarden.nl>
X-Gentoo-Bug: 409743
X-Gentoo-Bug-URL: https://bugs.gentoo.org/show_bug.cgi?id=409743
init.d/fsck: only check local file systems

On linux systems, fsck was not taking into account which filesystems
were local or remote. This commit adds the -t option, with an
appropriate value, to the fsck call so that remote file systems are not
checked.

reported-by: Vladimir Berezhnoy <non7top@gmail.com>
X-Gentoo-Bug: 408363
X-Gentoo-Bug-URL: http://bugs.gentoo.org/show_bug.cgi?id=408363
Change the method for calculating the interface metric for linux systems

On linux systems running  >=linux-3.2, the /proc/net/dev file cannot be
relied on to show the order network interfaces were added to the system.
Also, there is currently a bug in the implementation of the seek call
for this file which can cause a system to go into an infinite loop.
This commit changes the _ifindex function to retreive the value of
/sys/class/net/${IFACE}/ifindex and use that value instead of attempting
to calculate one from the interface's position in /proc/net/dev.

reported-by: John Keeping <john.keeping@lineone.net>
X-Gentoo-Bug: 410127
X-Gentoo-Bug-URL: https://bugs.gentoo.org/show_bug.cgi?id=410127
net/ifconfig, net/iproute: need sysfs

sysfs needs to be available before we can check interfaces. On udev
systems this was not a problem, but with mdev/static-dev, there is no
other need for sysfs until later in the init.

X-Gentoo-Bug: 410701
X-Gentoo-Bug-URL: https://bugs.gentoo.org/show_bug.cgi?id=410701
Signed-off-by: Robin H. Johnson <robbat2@gentoo.org>
network scripts need sysfs on linux systems

Adjust the previous commit so that on linux systems the network scripts
need sysfs.
init.d/procfs: posix compatibility fix

I've noticed in at boot:
    # /etc/init.d/procfs restart
    procfs         | * WARNING: you are stopping a boot service
    procfs         |[: 308: unexpected operator

Which calls
    $ /bin/dash -c '[ "$RC_SYS" == "OPENVZ" ] && echo "ovz" || echo "nope"'
    [: 1: unexpected operator
    nope

Fixed by using '='.

X-Gentoo-Bug: 412237
x-Gentoo-Bug-URL: https://bugs.gentoo.org/show_bug.cgi?id=412237
Remove duplicate getenv("RC_SVCNAME") call
Whitespace
Disable some questionable lines

Caused by bug 412589 I was looking at the do_mark_service() function and quickly
found that the segfault is caused by a strlen() call against a NULL pointer.
I also noticed it's using "/exclusive/%s.%s" so svcname.pid, all other functions
are just using the svcname.. So it seems that svcname.pid was/is never used and
thus not necessary at all.

In relation to the above, the if statement in the do_mark_service() function
("if (ok && svcname && strcmp(svcname, service) == 0) {") needs to be
fixed/improved as svcname and service are almost always equal, see my comment in
the function for further details.

Signed-off-by: Christian Ruppert <idl0r@gentoo.org>

Reported-by: Patrick McLean <chutzpah@gentoo.org>
X-Gentoo-Bug: 412589
X-Gentoo-Bug-URL: https://bugs.gentoo.org/412589
Reduce overhead by leaving rc_deptree_update_needed() as soon as possible

There's no need to check any further if we're returning true anyway.

Signed-off-by: Christian Ruppert <idl0r@gentoo.org>