Tom Gundersen [Wed, 23 Apr 2014 15:42:55 +0000 (17:42 +0200)]
networkd-wait-online: improve interoptability and enable by default
To make sure we don't delay boot on systems where (some) network links are managed by someone else
we don't block if something else has successfully brought up a link.
We will still block until all links we are aware of that are managed by networkd have been
configured, but if no such links exist, and someone else have configured a link sufficiently
that it has a carrier, it may be that the link is ready so we should no longer block.
Note that in all likelyhood the link is not ready (no addresses/routes configured),
so whatever network managment daemon configured it should provide a similar wait-online
service to block network-online.target until it is ready.
The aim is to block as long as we know networking is not fully configured, but no longer. This
will allow systemd-networkd-wait-online.service to be enabled on any system, even if we don't
know whether networkd is the main/only network manager.
Even in the case networking is fully configured by networkd, the default behavior may not be
sufficient: if two links need to be configured, but the first is fully configured before the
second one appears we will assume the network is up. To work around that, we allow specifying
specific devices to wait for before considering the network up.
This unit is enabled by default, just like systemd-networkd, but will only be pulled in if
anyone pulls in network-online.target.
Jeffrey Clark [Wed, 23 Apr 2014 20:37:43 +0000 (22:37 +0200)]
analyze: fix plot with bad y size
systemd-analyze plot > test.svg produces output with all y and height
element attributes equal to zero. This of course causes the resulting
svg to appear blank (zero height). Bug does not affect x86. Looks like
a compiler optimization may be the culprit.
David Herrmann [Wed, 23 Apr 2014 15:38:43 +0000 (17:38 +0200)]
login: rename session_mute_vt() to session_prepare_vt()
This function is no longer just about muteing the VT. We do all kinds of
VT setup for sessions using the controller-API. Rename the function to
something more appropriate.
Ray Strode [Tue, 22 Apr 2014 17:27:58 +0000 (13:27 -0400)]
login: give session ownership of VT
The tty associated with a VT should be owned by the owner of the session
running on the VT. This is important for supporting a socket activated X
server, since the X server will open the tty itself.
This commit makes sure to chown the tty any time a session is
created and and chown it back to root any time the session
is removed. This behavior is copied from /bin/login.
Tom Gundersen [Tue, 22 Apr 2014 17:36:40 +0000 (19:36 +0200)]
networkd: link - don't react to successfull link up
Avoid having two code-paths racing with eacother to do the same thing. The change
of flags will be detected in the normal way, so only use the link_up_handler
to detect if the 'up' failed and in that case fail the link.
There appears to be a kernel bug that (among other things) cause bridges
not to get a bridge id set when supplying IFLA_ADDRESS when creating the
netdev.
Simply revert the whole thing until we sort this out in the kernel.
Michael Olbrich [Tue, 25 Mar 2014 13:15:45 +0000 (14:15 +0100)]
service: add support for reboot argument when triggered by StartLimitAction=
When rebooting with systemctl, an optional argument can be passed to the
reboot system call. This makes it possible the specify the argument in a
service file and use it when the service triggers a restart.
This is useful to distinguish between manual reboots and reboots caused by
failing services.
Dave Reisner [Sat, 19 Apr 2014 17:22:35 +0000 (13:22 -0400)]
implement a union to pad out file_handle
Cases where name_to_handle_at is used allocated the full struct to be
MAX_HANDLE_SZ, and assigned this size to handle_bytes. This is wrong
since handle_bytes should describe the length of the flexible array
member and not the whole struct.
Define a union type which includes sufficient padding to allow
assignment of MAX_HANDLE_SZ to be correct.
Tom Gundersen [Sat, 19 Apr 2014 15:14:36 +0000 (17:14 +0200)]
networkd: netdev - give up early when setting already set ifindex
We may receive RTM_NEWLINK messages with missing LINKINFO after the initial NEWLINK message,
don't bother verifying these, just drop out early after checking that the ifindex is not in conflict.
Tom Gundersen [Tue, 15 Apr 2014 12:21:44 +0000 (14:21 +0200)]
networkd: tie links to rtnl rather than udev
This essentially swaps the roles of rtnl and udev in networkd. After this
change libudev is only used for waiting for udev to initialize devices and
to get udev-specific information needed for some [Match] attributes.
This in particular simplifies the code in containers where udev is not really
useful, but also simplifies things and reduces round-trips in the non-container
case.
It causes a crash in PID1:
Apr 19 13:49:32 lon systemd[1]: Code should not be reached 'Unhandled socket type.'
at src/core/socket.c:684, function instance_from_socket(). Aborting.
Apr 19 13:49:32 lon systemd[1]: Caught <ABRT>, dumped core as pid 336.
Apr 19 13:49:32 lon systemd[1]: Freezing execution.
install: create_symlink() check unlink() return value
create_symlink() do not check the return value of unlink(), this may
confuse the user.
Before the unlink() call we check the 'force' argument. If it is not set
we fail with -EEXIST, otherwise we unlink() the file, therefore the next
symlink() should not fail with -EEXIST (do not count races...).
However since callers may not have appropriate privileges to unlink()
the file we lose the -EPERM or any other errno code of unlink(), and
return the -EEXIST of the next symlink(). Fix this by checking unlink()
results.
Before:
$ systemctl --force --root=~/container-03 set-default multi-user.target
Failed to set default target: File exists
After:
$ systemctl --force --root=~/container-03 set-default multi-user.target
Failed to set default target: Permission denied
systemctl: allow to change the default target without the --force switch
Currently "systemctl set-default" will fail to change the default target
due to the 'default.target' being a symlink which is always the case.
To work around this, the user must specify the "--force" switch to be
able to overwrite the existing symlink.
This is clearly a regression that was introduced by commit 718db96199e
since it worked before without the "--force" switch and the man pages do
not mention that you need to specify it. It is expected that this is a
symlink.
So just explicity set the force flag to make it work again.
Handle Unix domain socket connections from outside our namespace
NixOS uses Unix domain sockets for certain host <-> container
interaction; i.e. the host connects to a socket visible in the
container's directory tree, where the container uses a .socket unit to
spawn the handler program on demand. This worked in systemd 203, but
in 212 fails with "foo.socket failed to queue service startup job
(Maybe the service file is missing or not a template unit?): No data
available".
The reason is that getpeercred() now returns ENODATA if it can't get
the PID of the client, which happens in this case because the client
is not in the same PID namespace. Since getpeercred() is only used to
generate the instance name, this patch simply handles ENODATA by
creating an instance name "<nr>-unknown".
[zj: reorder clauses and remove (unsigned long) casts.]
sec is not set if have_time is false so avoid using it. have_time
was introduced in 9ff09bcb86fb125768667aca9bc0b10b1745370a but only
the first uses for sec were covered
Tom Gundersen [Mon, 14 Apr 2014 15:20:51 +0000 (17:20 +0200)]
sd-rtnl: socket_read - use a read buffer
Rather than allocating/freeing memory for each message read, keep a global read buffer
in the rtnl object. Also, rather than using a fixed size, peek at the pending message
header to get the message size and reallocate as necessary.
Tom Gundersen [Sun, 13 Apr 2014 19:37:53 +0000 (21:37 +0200)]
sd-rtnl: multi-part message - store as linked-list rather than independent messages
This means the API can stay the same as for single-part messages by simply passing the head message around. Unrefing
the head of the linked list unrefs the whole list.
Kay Sievers [Mon, 14 Apr 2014 14:54:35 +0000 (07:54 -0700)]
hwdb: PCI - include "primary" model string in subsystem model string
The data in the PCI ids file is randomly inconsistent. Many
subvendor model strings just describe the "product" where the
hardware is built into, not the hardware itself. This causes
some "Network Card Model Foo" to show up as "Laptop Model Bar".
Try to make the best out of this mess and concatenate both
strings to describe the hardware.
bus: process AddMatch/RemoveMatch driver call in proxy
Previously, AddMatch/RemoveMatch calls where processed exclusively in
the proxy. That's racy however, since subscribing to a signal might not
complete before the signal is sent due to some subsequent method call.
Hence, in order to expose the same ordering guarantees as dbus1 process
the AddMatch/RemoveMatch calls from the proxy, so that they are
dispatched synchronously to all following messages, thus fixing the
race.
Ultimately, we should probabably dissolve the driver entirely into the
proxy, as it is purely a compatibility feature anyway...
Kay Sievers [Sun, 13 Apr 2014 05:35:50 +0000 (22:35 -0700)]
udev: remove seqnum API and all assumptions about seqnums
The way the kernel namespaces have been implemented breaks assumptions
udev made regarding uevent sequence numbers. Creating devices in a
namespace "steals" uevents and its sequence numbers from the host. It
confuses the "udevadmin settle" logic, which might block until util a
timeout is reached, even when no uevent is pending.
Remove any assumptions about sequence numbers and deprecate libudev's
API exposing these numbers; none of that can reliably be used anymore
when namespaces are involved.
path-util: also check for existence of binary when given absolute path
In contrast to a filename-only argument, find_binary() did not
actually check if an path exists, allowing the code to fail later on.
This was OK, but it seems nicer to treat both paths identically.
Also take advantage of path_make_absolute_cwd doing strdup() by itself
if necessary to simplify.