Since we now have the possibility to request prefixes to be delegated
without corresponding IPv6 addresses, it does not make sense to store
lease T1 and T2 timeouts in the otherwise unused IA_NA structure.
Therefore lease timeouts T1 and T2 are moved to the DHCPv6 client
structure, as there will be only one set of stateful timeouts required
by RFC 7550, Section 4.3.
Select T1 and T2 timeouts based on whether addresses or prefixes were
requested and what the server offered. The address and prefix timeouts
values have been computed earlier when the relevant DHCPv6 options were
parsed.
Add function to fetch the IAID for the delegated IA_PD prefix. In
order to keep things simple in the implemntation, the same IAID
is used with IA_NA addresses and IA_PD prefixes. But the DHCPv6
server can choose to return only IA_PD prefixes, and the client
can nowadays omit requesting of IA_NA addresses. Since the function
fetching said IAID from the lease looks only for IA_NA ones, it
will return an empty IAID, which of course does not match the one
set for prefixes.
Fix this by adding a function returning the IAID for the prefix.
RFC 7084, WPD-4, requires Customer Edge end routers to behave
according to the following:
"WPD-4: By default, the IPv6 CE router MUST initiate DHCPv6 prefix
delegation when either the M or O flags are set to 1 in a
received Router Advertisement (RA) message. Behavior of the
CE router to use DHCPv6 prefix delegation when the CE router
has not received any RA or received an RA with the M and the
O bits set to zero is out of scope for this document."
Since it cannot be automatically detected whether DHCPv6 is to be
operated as an CE end router or whether to initiate an Informational
exchange to obtain other useful network information via DHCPv6 when the
Router Advertisement 'O' bit is set, a 'ForceDHCPv6PDOtherInformation'
boolean network configuration option in the '[DHCP]' section of a is
introduced. Setting this option causes DHCPv6 to be started in stateful
mode, although only the 'O' bit is seen in the Router Advertisement.
When 'ForceDHCPv6PDOtherInformation' is set and the Router Advertisement
has only the Other information 'O' bit set, disable requests for IA_NA
addresses.
Fixes#9745.
Add function to enable/disable IA_NA address requests. Internally
handle the request as a bit mask and add IA_PD prefix delegation
to the same bit mask instead of having a separate boolean. Thus
the calling code can set requests for prefix and address delegation
separately. This is handy when supporting RFC 7084.
Add a check in the code that at least something is requested from
the server in Managed mode. By default request IA_NA addresses from
the DHCPv6 server. Although a value has been defined for IA_TA,
temporay IA_TA addresses are not yet requested.
Add helper function for fetching enabled/disabled state of Prefix
Delegation for a DHCPv6 client. Update function setting prefix
delegation to use an int instead of a boolean.
Both 'systemd-hwdb update' and 'udevadm hwdb --update' creates hwdb
database. The database created by systemd-hwdb containes additional
information such that priority, line number, and source filename.
The unified function 'hwdb_update()' can take a flag 'compat' which
controls the format version of created database.
This reverts commit 48d3e88c18.
I kept the follow-symlink=false → follow-symlink=true change instact, since
we're likely to have existing installations with a symlink now.
Several functions are shared by qsort and hash_ops or Prioq.
This makes these functions explicitly specify argument type,
and cast to __compar_fn_t where necessary.
In older kernels IPoIB network devices expose the port number via
the sysfs attribute 'dev_id', which is not intended to be used this way.
Let's support both options for a while.
An InfiniBand network address is 20 bytes long. Only the least
significant 8 bytes can be interpreted as a persistent hardware unit
identifier; the other 12 are transiently derived at runtime from metadata
specific to the protocol stack.
However, since the network interface name length is hard-capped by
IFNAMSIZ at 16 chars and the 2-byte type prefix with '\0' at the end
leave us only at 13, we cannot squeeze a descriptive representation of a
HW address into an interface name. Thus, it makes the most sense to drop
the scheme for IPoIB interfaces entirely.
Currently udev just gets confused and does what it has been taught
to do: fetches the first six bytes and puts them into a permanent
device attribute.
We've long neglected IP-over-InfiniBand network interfaces, let's treat
them the same way we treat anyone else.
IPoIB interfaces will retain the 'ib' prefix; otherwise the naming scheme
is the same one we use for other network interfaces. E.g. a IPoIB network
device provided by a PCI card at bus 21 slot 0 function 6 will be named
'ibp21s0f6'.
Quoting https://github.com/systemd/systemd/issues/10074:
> detect_vm_uml() reads /proc/cpuinfo with read_full_file()
> read_full_file() has a file max limit size of READ_FULL_BYTES_MAX=(4U*1024U*1024U)
> Unfortunately, the size of my /proc/cpuinfo is bigger, approximately:
> echo $(( 4* $(cat /proc/cpuinfo | wc -c)))
> 9918072
> This causes read_full_file() to fail and the Condition test fallout.
Let's just read line by line until we find an intersting line. This also
helps if not running under UML, because we avoid reading as much data.
optind may be used in each verb, e.g., udevadm. So, let's initialize
optind before calling verbs.
Without this, e.g., udevadm -d hwdb --update causes error in parsing arguments.
Since the commit torvalds/linux@fdb5c4531c
the syscall BPF_PROG_ATTACH return EBADF when CONFIG_CGROUP_BPF is
turned off and as result the bpf_firewall_supported() returns the
incorrect value.
This commmit replaces the syscall BPF_PROG_ATTACH with BPF_PROG_DETACH
which is still work as expected.
Resolvesopenbmc/linux#159
See also systemd/systemd#7054
Signed-off-by: Alexander Filippov <a.filippov@yadro.com>
Without this, log shows meaningless error message 'No anode', e.g.,
===
Failed to unshare the mount namespace: Operation not permitted
foo.service: Failed to set up mount namespacing: No anode
foo.service: Failed at step NAMESPACE spawning /usr/bin/test: No anode
===
Follow-up for 1beab8b0d0.
When loading units, sometimes we'd first encounter a unit from .wants or
.requires directory. A typical case would be when multi-user.target.wants/
contains a symlink to some unit. We would prepare to load this unit using
/etc/systemd/system/multi-user.target.wants/foo.service as the fragment
path. This is always wrong. Instead, let's use NULL as the path and let
manager_load_unit() figure out the path on its own.
Fixes#9921.
path=0x5625ed9b01a0 "/usr/lib/systemd/system/local-fs.target.wants/systemd-remount-fs.service", e=0x0,
_ret=0x7ffe64645000) at ../src/core/manager.c:1887
name=0x5625ed9b01ce "systemd-remount-fs.service",
path=0x5625ed9b01a0 "/usr/lib/systemd/system/local-fs.target.wants/systemd-remount-fs.service", e=0x0,
_ret=0x7ffe64645000) at ../src/core/manager.c:1961
name=0x5625ed9b01ce "systemd-remount-fs.service",
path=0x5625ed9b01a0 "/usr/lib/systemd/system/local-fs.target.wants/systemd-remount-fs.service",
add_reference=true, mask=UNIT_DEPENDENCY_FILE) at ../src/core/unit.c:2946
dir_suffix=0x5625ebb179ed ".wants") at ../src/core/load-dropin.c:95
path=0x0, e=0x0, _ret=0x7ffe646452c0) at ../src/core/manager.c:1965
name=0x5625ebb186f8 "local-fs.target", path=0x0, add_reference=true,
mask=UNIT_DEPENDENCY_MOUNTINFO_IMPLICIT) at ../src/core/unit.c:2946
where=0x5625ed9b3cc0 "/tmp", options=0x5625ed947110 "rw,nosuid,nodev,seclabel",
fstype=0x5625ed95be90 "tmpfs", flags=0x7ffe64645395) at ../src/core/mount.c:1439
where=0x5625ed9b3cc0 "/tmp", options=0x5625ed947110 "rw,nosuid,nodev,seclabel",
fstype=0x5625ed95be90 "tmpfs", set_flags=false) at ../src/core/mount.c:1567
at ../src/core/mount.c:1635
ret_retval=0x7ffe64645660, ret_shutdown_verb=0x7ffe646456c0, ret_fds=0x7ffe646456d8,
ret_switch_root_dir=0x7ffe646456b0, ret_switch_root_init=0x7ffe646456b8,
ret_error_message=0x7ffe646456c8) at ../src/core/main.c:1669
When parsing and installing binaries mentioned in Exec*= lines the
5ed0dcf4d5 commit added parsing logic to drop
prefixes, including handling duplicate exclamation marks. But this did not
handle arbitrary combination of multiple prefixes, ie. StartExec=+-/bin/sh was
parsed as -/bin/sh which then would fail to install.
Instead of using egrep and shell replacements, replace both with sed command
that does it all. This sed script extract a group of characters starting with a
/ up to the first space (if any) after the equals sign. This correctly handles
existing non-prefixed, prefixed, multiple-prefixed commands.
About half commands seem to repeat themself, thus sort -u cuts the list of
binaries to install about in half.
To validate change of behaviour both old and new functions were modified to
echo parsed binaries into separate files, and then diffed. The incorrect
-/bin/sh was missing in the new output.
Without this patch tests fail on default Ubuntu installs.
Patrik Flykt
Zbigniew Jędrzejewski-Szmek
Yu Watanabe
javitoom
Tony Novak
Arseny Maslennikov
Alexander Filippov
Jon Ringle
Evgeny Vereshchagin
Dimitri John Ledkov