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dhcp6_request_address()
Starting the DHCP client doesn't seem like dhcp6_request_address()'s responsibility anyway. Whenever it's called, sd_dhcp6_client_start() is unconditionally called outside of it as well. See ndisc_router_handler() and ndisc_handler() in networkd-ndisc.c.
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Fix issue #3256 and probably #1982. Referenced link_acquire_ipv6_conf() in networkd-link.c.
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https://bugzilla.redhat.com/show_bug.cgi?id=1336960
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After enabling/disabling a unit, the daemon configuration is expected
to be unless '--no-reload' option is passed.
However this is not done when enabling a sysv units. This can lead to
the following scenario:
$ cp /etc/init.d/named /etc/init.d/foo
$ systemctl enable foo
foo.service is not a native service, redirecting to systemd-sysv-install
Executing /usr/lib/systemd/systemd-sysv-install enable foo
$ systemctl start foo
Failed to start foo.service: Unit foo.service failed to load: No such file or directory.
This can also be seen after installing a package providing a sysv
service: the service can't be started unless 'daemon-reload' is called
manually. This shouldn't be needed and this patch will fix this case
too since during package installation, the service is expected to be
enabled/disabled.
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The sync() call on shutdown had been removed with commit 57371e5829a61e5ee6c9f98404dfc729d6c62608
together with the no-sync option for the shutdown commands.
The sync call was restored in commit 4a3ad39957399c4a30fc472a804e72907ecaa4f9 but the no-sync option
wasn't re-added.
I think we should restore this option at least for the legacy halt command.
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free_and_strdup already handles the NULL case for us, so we can remove
an extraneous conditional check.
As noted in https://github.com/systemd/systemd/pull/3279/files#r63687717
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Due to the substantial interface changes in cgroup unified hierarchy, new IO
settings are introduced. Currently, IO settings apply only to unified
hierarchy and BlockIO to legacy. While the transition is necessary, it's
painful for users to have to provide configs for both. This patch implements
translation from one config set to another for configs which make sense.
* The translation takes place during application of the configs. Users won't
see IO or BlockIO settings appearing without being explicitly created.
* The translation takes place only if there is no config for the matching
cgroup hierarchy type at all.
While this doesn't provide comprehensive compatibility, it should considerably
ease transition to the new IO settings which are a superset of BlockIO
settings.
v2:
- Update test-cgroup-mask.c so that it accounts for the fact that
CGROUP_MASK_IO and CGROUP_MASK_BLKIO move together. Also, test/parent.slice
now sets IOWeight instead of BlockIOWeight.
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Factor out the following functions out of cgroup_context_apply()
* cgroup_context_[blk]io_weight()
* cgroup_apply_[blk]io_device_weight()
* cgroup_apply_[blk]io_device_limit()
This is pure refactoring and shouldn't cause any functional differences.
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CGroupBlockIODeviceBandwith is used to keep track of IO bandwidth limits for
legacy cgroup hierarchies. Unlike the unified hierarchy counterpart
CGroupIODeviceLimit, a CGroupBlockIODeviceBandwiddth records either a read or
write limit and has a couple issues.
* There's no way to clear specific config entry.
* When configs are cleared for an IO direction of a unit, the kernel settings
aren't cleared accordingly creating discrepancies.
This patch updates CGroupBlockIODeviceBandwidth so that it behaves similarly to
CGroupIODeviceLimit - each entry records both rbps and wbps limits and is
cleared if both are at default values after kernel settings are updated.
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cgroup IO controller supports maximum limits for both bandwidth and IOPS but
systemd resource control currently only supports bandwidth limits. This patch
adds support for IOReadIOPSMax and IOWriteIOPSMax when unified cgroup hierarchy
is in use.
It isn't difficult to also add BlockIOReadIOPS and BlockIOWriteIOPS for legacy
hierarchies but IO control on legacy hierarchies is half-broken anyway, so
let's leave it alone for now.
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Currently, there are two cgroup IO limits, bandwidth max for read and write,
and they are hard-coded in various places. This is fine for two limits but IO
is expected to grow more limits - low, high and max limits for bandwidth and
IOPS - and hard-coding each limit won't make sense.
This patch replaces hard-coded limits with an array indexed by
CGroupIOLimitType and accompanying string and default value tables so that new
limits can be added trivially.
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Now we are not dropping the IPv6LL address when link is down.
So next time when link is up and before kernel acquired this address
we are using the old address.
When the link is down kernel tells us that this address is no longer
valid . Let's remove this address and again when kernel tells us
that the address is added let's use it.
fixes #3264
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This is partial fix for #2228 and #2977, #3204.
bridge-test: netdev ready
docker0: Gained IPv6LL
wlan0: Gained IPv6LL
eth0: Gained IPv6LL
Enumeration completed
bridge-test: netdev exists, using existing without changing its
parameters
vboxnet0: IPv6 enabled for interface: Success
lo: Configured
docker0: Could not drop address: No such process
vboxnet0: Gained carrier
wlan0: Could not drop address: No such process
eth0: Could not drop address: No such process
eth0: Could not drop address: No such process
eth0: Could not drop address: No such process
vboxnet0: Gained IPv6LL
vboxnet0: Could not set NDisc route or address: Invalid argument
vboxnet0: Failed
[New Thread 0x7ffff6505700 (LWP 1111)]
[Thread 0x7ffff6505700 (LWP 1111) exited]
Assertion 'link->state == LINK_STATE_SETTING_ROUTES' failed at
src/network/networkd-link.c:672, function link_enter_configured().
Aborting.
Program received signal SIGABRT, Aborted.
0x00007ffff6dc6a98 in raise () from /lib64/libc.so.6
Missing separate debuginfos, use: dnf debuginfo-install
iptables-1.4.21-15.fc23.x86_64 libattr-2.4.47-14.fc23.x86_64
libidn-1.32-1.fc23.x86_64 pcre-8.38-7.fc23.x86_64
Debugging
(gdb) bt
"link->state == LINK_STATE_SETTING_ROUTES", file=0x5555556a34c8
"src/network/networkd-link.c", line=672,
func=0x5555556a56d0 <__PRETTY_FUNCTION__.14850>
"link_enter_configured") at src/basic/log.c:788
src/network/networkd-link.c:672
src/network/networkd-link.c:720
flags=0 '\000', scope=0 '\000', cinfo=0x7fffffffe020) at
src/network/networkd-address.c:344
(rtnl=0x5555556eded0, message=0x55555570ff20, userdata=0x5555556ec590)
at src/network/networkd-manager.c:604
m=0x55555570ff20) at src/libsystemd/sd-netlink/sd-netlink.c:365
at src/libsystemd/sd-netlink/sd-netlink.c:395
ret=0x0) at src/libsystemd/sd-netlink/sd-netlink.c:429
revents=1, userdata=0x5555556eded0) at
src/libsystemd/sd-netlink/sd-netlink.c:723
src/libsystemd/sd-event/sd-event.c:2268
src/libsystemd/sd-event/sd-event.c:2629
timeout=18446744073709551615) at src/libsystemd/sd-event/sd-event.c:2688
bus=0x5555556eeba0, name=0x55555568a2f5 "org.freedesktop.network1",
timeout=30000000,
check_idle=0x55555556adb6 <manager_check_idle>,
userdata=0x5555556ec590) at src/shared/bus-util.c:134
src/network/networkd-manager.c:1130
src/network/networkd.c:127
(gdb) f 3
src/network/networkd-link.c:672
672 assert(link->state == LINK_STATE_SETTING_ROUTES);
(gdb) p link->state
$1 = LINK_STATE_FAILED
We should not be in this state .
even if vboxnet0 failed we went into this state.
vboxnet0: Could not set NDisc route or address: Invalid argument
vboxnet0: Failed
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Fix for #3232.
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Add an option to disable appending DHCP option 3 (Router) to the DHCP
OFFER and ACK packets.
This commit adds the boolean option EmitRouter= for the [DHCPServer]
section in .network files.
Rationale: On embedded devices, it is very useful to have a DHCP server
running on an USB OTG ethernet gadget interface to avoid manual setup on
the client PCs, but it should only serve IP addresses, no route(r)s.
Otherwise, Windows clients experience network connectivity issues, due
to them using the address set in DHCP option 3 as default gateway.
Signed-off-by: Clemens Gruber <clemens.gruber@pqgruber.com>
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Makes it consistent with the other branches here.
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This isn't quite symmetrical to in_addr_from_string() because it also returns
an offset indicating how much of the string was consumed by the matched
pattern. This offset reporting is needed for either of the following use
cases:
* verifying the lack of trailing garbage after such an address
* parsing subsequent data from the same string
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define HEXDIGITS alongside DIGITS, and use it where it's already useful. We'll
use it again shortly when parsing MAC addresses.
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networkd currently silently accepts some strings as MAC addresses that it
probably shouldn't (like "ab:cd:ef:12:34:56:78" and "ab:cd:ef:12:3 4:56").
Add tests to MAC address parsing to ensure that we only accept valid MAC
addresses, and that we accept the three most common forms of MAC address
(colon-delimited hex, IEEE, and Cisco)
Several of these tests currently fail, but another commit in this series will
resolve them.
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Small networkd cleanup
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core: add io controller support on the unified hierarchy
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We currently generate log message about unit being started even when
unit was started already and job didn't do anything. This is because job
was requested explicitly and hence became anchor job of the transaction
thus we could not eliminate it. That is fine but, let's not pollute
journal with useless log messages.
$ systemctl start systemd-resolved
$ systemctl start systemd-resolved
$ systemctl start systemd-resolved
Current state:
$ journalctl -u systemd-resolved | grep Started
May 05 15:31:42 rawhide systemd[1]: Started Network Name Resolution.
May 05 15:31:59 rawhide systemd[1]: Started Network Name Resolution.
May 05 15:32:01 rawhide systemd[1]: Started Network Name Resolution.
After patch applied:
$ journalctl -u systemd-resolved | grep Started
May 05 16:42:12 rawhide systemd[1]: Started Network Name Resolution.
Fixes #1723
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More friendly to the stack.
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Private /dev will not be managed by udev or others, so we can make it
noexec and readonly after we have made all device nodes. As /dev/shm
needs to be writable, we can't use bind_remount_recursive().
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Also adjust indentation in various places.
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While creating a VLAN the mac address should be copied from the parent interface, so that
the VLANs inherit the MAC address of the physical interface.
Before:
```
3: wlp3s0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc mq state UP group default qlen 1000
link/ether 00:26:c6:85:a3:c2 brd ff:ff:ff:ff:ff:ff
...
6: vlan1@wlp3s0: <BROADCAST,MULTICAST> mtu 1500 qdisc noop state DOWN group default qlen 1000
link/ether 22:07:73:9d:43:59 brd ff:ff:ff:ff:ff:ff
7: vlan2@wlp3s0: <BROADCAST,MULTICAST> mtu 1500 qdisc noop state DOWN group default qlen 1000
link/ether 46:30:76:33:35:d4 brd ff:ff:ff:ff:ff:ff
```
After:
```
3: wlp3s0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc mq state UP group default qlen 1000
link/ether 00:26:c6:85:a3:c2 brd ff:ff:ff:ff:ff:ff
...
11: vlan1@wlp3s0: <BROADCAST,MULTICAST> mtu 1500 qdisc noop state DOWN group default qlen 1000
link/ether 00:26:c6:85:a3:c2 brd ff:ff:ff:ff:ff:ff
12: vlan2@wlp3s0: <BROADCAST,MULTICAST> mtu 1500 qdisc noop state DOWN group default qlen 1000
link/ether 00:26:c6:85:a3:c2 brd ff:ff:ff:ff:ff:ff
```
v2 of #1573, with fixed commit message.
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This patch implements support for the IFLA_BR_MCAST_SNOOPING attribute
it can change the multicast snooping value.
IGMP snooping monitors the Internet Group Management Protocol (IGMP)
traffic between hosts and multicast routers.
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It is just an alias for route_free which requires that route is not null,
but it was only used in one place where it was checked that route is not
null anyway. Let's just call route_free instead.
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This is now the recommended way to do monitoring by upstream D-Bus.
It's also allowed in the default policy, whereas eavesdrop is not
anymore, which effectively broke busctl on many systems.
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unit_set_slice() fails with -EBUSY if the unit already has a slice associated
with it. This makes it impossible to override slice through dropin config or
over dbus. There's no reason to disallow slice changes as long as cgroups
aren't realized. Fix it.
Fixes #3240.
Signed-off-by: Tejun Heo <htejun@fb.com>
Reported-by: Davide Cavalca <dcavalca@fb.com>
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Drop all dangling old /dev mounts before mounting a new private /dev tree.
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This new method returns information by unit names. Instead of ListUnitsByPatterns
this method returns information of inactive and even unexisting units.
Moved dbus unit reply logic into a separate shared function.
Resolves https://github.com/coreos/fleet/pull/1418
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Add a synchronization point so that custom initramfs units can run
after the root device becomes available, before it is fsck'd and
mounted.
This is useful for custom initramfs units that may modify the
root disk partition table, where the root device is not known in
advance (it's dynamically selected by the generators).
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Desktop environments can keep this property up to date to allow
applications to easily track session's Lock status.
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We need to be sure that the size returned here actually matches what we will read with recvmsg() next
Fixes #2984
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Fix "preset-all" with dangling symlinks and install-section hint emitted too eagerly
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_const_ means that the caller can assume that the function will return the same
result every time (and will not modify global memory). special_glyph() meets
this: even though it depends on global memory, that part of global memory is
not expected to change. This allows the calls to special_glyph() to be
optimized, even if -flto is not used.
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That function doesn't draw anything on it's own, just returns a string, which
sometimes is more than one character. Also remove "DRAW_" prefix from character
names, TREE_* and ARROW and BLACK_CIRCLE are unambigous on their own, don't
draw anything, and are always used as an argument to special_glyph().
Rename "DASH" to "MDASH", as there's more than one type of dash.
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It's quite a bit shorter and just as readable.
(The full sentence with "pointing to" was added to replace a text that used
"ln -s %s %s". Using the "ln" syntax is indeed unclear, because it's not
obvious which is the source and which is the target, and because symlink(2)
uses the opposite order to ln(1). But with the unicode arrow there should
be no ambiguity.)
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Executing 'systemctl enable' on the same unit twice would cause
a warning about a missing [Install] section to be printed. To avoid
this, count all symlinks that "would" be created, and return 1
no matter if we actually created a symlink or skipped creation because
it already exists.
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This fixes 'preset-all' with a unit that is a dangling symlink.
$ systemctl --root=/ preset-all
Unit syslog.service is an alias to a unit that is not present, ignoring.
Unit auditd.service is masked, ignoring.
Unit NetworkManager.service is masked, ignoring.
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$ systemctl --root=/ preset foobar.service
Cannot find unit foobar.service.
Failed to preset: No such file or directory.
$ systemctl --root=/ preset foobar@.service
Cannot find unit foobar@.service.
Failed to preset: No such file or directory.
$ systemctl --root=/ preset foobar@blah.service
Cannot find unit foobar@blah.service or foobar@.service.
Failed to preset: No such file or directory.
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