This is the responsability of the caller to apply the correct lock
before using these functions. Moreover, the use of a simple boolean
was still racy: two threads may check the boolean and "lock" it
simultaneously.
Users of functions from src/util/virhash.c have to be checked for
correctness. Lookups and iteration should hold a RO
lock. Modifications should hold a RW lock.
Most important uses seem to be covered. Callers have now a greater
responsability, notably the ability to execute some operations while
iterating were reliably forbidden before are now accepted.
Signed-off-by: Vincent Bernat <vincent@bernat.im>
Since virCloseCallbacksRun was ignoring the value anyway, let's
just change it to be a void function.
Signed-off-by: John Ferlan <jferlan@redhat.com>
Reviewed-by: Marc Hartmayer <mhartmay@linux.vnet.ibm.com>
Since the introduction of log tuning capabilities to virt-admin by
@06b91785, this has been a much needed missing improvement on the way to
deprecate the global 'log_level'.
Signed-off-by: Erik Skultety <eskultet@redhat.com>
When preparing for migration, the libxl driver creates a new TCP listen
socket for the incoming migration by calling virNetSocketNewListenTCP,
passing the destination host name. virNetSocketNewListenTCP calls
virSocketAddrParse to check if the host name is a wildcard address, in
which case it avoids adding the AI_ADDRCONFIG flag to the hints passed to
getaddrinfo. If the host name is not an IP address, virSocketAddrParse
reports an error
error : virSocketAddrParseInternal:121 : Cannot parse socket address
'myhost.example.com': Name or service not known
But virNetSocketNewListenTCP succeeds regardless and the overall migration
operation succeeds.
Introduce virSocketAddrParseAny and use it when simply testing if a host
name/addr is parsable.
Signed-off-by: Jim Fehlig <jfehlig@suse.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
This helper fetches dependencies for given device mapper target.
At the same time, we need to provide a dummy log function because
by default libdevmapper prints out error messages to stderr which
we need to suppress.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Sometimes it's desired to get a JSON number as string. Add a helper.
This will help in cases where we'd want to convert the internal type from
string to something else.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
It was not possible to determine whether virJSONValueObjectAddVArgs and
the functions using it would consume a virJSONValue or not when used
with the 'a' or 'A' modifier depending on when the loop failed.
Fix this by passing in a pointer to the pointer so that it can be
cleared once it's successfully consumed and the callers don't have to
second-guess leaving a chance of leaking or double freeing the value
depending on the ordering.
Fix all callers to pass a double pointer too.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
The set of arguments was changed a long time ago (040d996342
which dates back to July 2013) but the corresponding
documentation was not updated.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Laine Stump <laine@laine.org>
The flags passed to virCommandPassFD() are unnamed and
documentation to this function doesn't list them either.
Give them name and mention it in documentation to functions
using them.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Laine Stump <laine@laine.org>
What one currently gets is:
failed to read '/sys/bus/mdev/devices/<UUID>/mdev_type/device_api': No
such file or directory
This indicates that something is missing within the device's sysfs tree
which likely might be not be the case here because the device simply
doesn't exist yet. So, when creating our internal mdev obj, let's check
whether the device exists first prior to trying to verify the
user-provided model within domain XML.
Signed-off-by: Erik Skultety <eskultet@redhat.com>
==16451== 32,768 bytes in 2 blocks are definitely lost in loss record 1,007 of 1,013
==16451== at 0x4C2AF0F: malloc (vg_replace_malloc.c:299)
==16451== by 0x7CADB40: nl_recv (in /usr/lib64/libnl-3.so.200.23.0)
==16451== by 0x532DFAC: virNetlinkDumpCommand (virnetlink.c:363)
==16451== by 0x53236AE: virNetDevIPCheckIPv6Forwarding (virnetdevip.c:641)
==16451== by 0xE3E4A1A: networkStartNetworkVirtual (bridge_driver.c:2490)
==16451== by 0xE3E55F5: networkStartNetwork (bridge_driver.c:2832)
==16451== by 0xE3DFFE5: networkAutostartConfig (bridge_driver.c:531)
==16451== by 0x53F47E0: virNetworkObjListForEachHelper (virnetworkobj.c:1412)
==16451== by 0x52FE69F: virHashForEach (virhash.c:606)
==16451== by 0x53F4857: virNetworkObjListForEach (virnetworkobj.c:1439)
==16451== by 0xE3E0BF4: networkStateAutoStart (bridge_driver.c:808)
==16451== by 0x55689CE: virStateInitialize (libvirt.c:758)
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Erik Skultety <eskultet@redhat.com>
We have to use VIR_WARNINGS_NO_CAST_ALIGN to avoid clang warning
about increased required alignment caused by some netlink macros.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
And at the same time, do that from .c rather than .h file.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Chen Hanxiao<chenhanxiao@gmail.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
introduce helper to parse RTM_GETNEIGH query message and
store it in struct virArpTable.
Signed-off-by: Chen Hanxiao <chenhanxiao@gmail.com>
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Some fields reported by dmidecode have plenty of useless spaces
(in fact some have nothing but spaces). To deal with this we have
introduced virSkipSpacesBackwards() and use it in
virSysinfoParseX86Processor() and virSysinfoParseX86Memory().
However, other functions (e.g. virSysinfoParseX86Chassis()) don't
use it at all and thus we are reporting nonsense:
<sysinfo type='smbios'>
<chassis>
<entry name='manufacturer'>FUJITSU</entry>
<entry name='version'> </entry>
<entry name='serial'> </entry>
<entry name='asset'> </entry>
<entry name='sku'>Default string</entry>
</chassis>
</sysinfo>
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Policy-Kit has been replaced by polkit (referred to, respectively,
as POLKIT0 and POLKIT1 in our Makefiles).
The last build fix with old Policy-Kit was in May 2013:
commit <442eb2ba> and build with -Wunused-label was broken
since April 2016: commit <8437130>
Signed-off-by: Ján Tomko <jtomko@redhat.com>
Probably due to copy-paste error we're storing asset tag into
def->sku which we even use in the next step to store SKU number
and thus the asset tag leaks.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
This time around it's not enough to just pick the latest commit,
because with aed87bb2aa6ed83b49574eb982e3bdd4c36acf17 keycodemapdb
renamed the 'rfb' keycode to 'qnum' and we need to accept the new
name while maintaining backwards compatibility.
Signed-off-by: Andrea Bolognani <abologna@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
The function used the 'cleanup' label only in error cases. This patch
makes the code pass the cleanup label in every case and removes few
unnecessary VIR_FREEs.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
When commit 3545cbef moved the sysfs attribute reading logic from
_udev.c module to virmdev.c, it had to replace our udev read wrappers
with the ones available from virfile.c. The problem is that the original
logic worked correctly with udev read wrappers which don't return an
error code for a missing attribute, virfile.c readers however - not so
much. Therefore add another parameter to the macro, so we can again
accept the fact that optional attributes may be missing.
Signed-off-by: Erik Skultety <eskultet@redhat.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
This flag is only used for tests. Let's instead overload bind syscall
in mocks where it is not done yet.
Signed-off-by: Nikolay Shirokovskiy <nshirokovskiy@virtuozzo.com>
Range check in virPortAllocatorSetUsed is not useful anymore
when we manage ports for entire unsigned short range values.
Signed-off-by: Nikolay Shirokovskiy <nshirokovskiy@virtuozzo.com>
Range check in virPortAllocatorSetUsed is not useful anymore
when we manage ports for entire unsigned short range values.
Signed-off-by: Nikolay Shirokovskiy <nshirokovskiy@virtuozzo.com>
Host tcp4/tcp6 ports is a global resource thus we need to make
port accounting also global or we have issues described in [1] when
port allocator ranges of different instances are overlapped (which
is by default for qemu for example).
Let's have only one global port allocator object that take care
of the entire ports range (0 - 65535) and introduce port range object
for clients to specify desired auto allocation band.
[1] https://www.redhat.com/archives/libvir-list/2017-December/msg00600.html
Signed-off-by: Nikolay Shirokovskiy <nshirokovskiy@virtuozzo.com>
Ensure all enum cases are listed in switch statements.
Reviewed-by: John Ferlan <jferlan@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
To ensure we have standardized error messages when reporting problems
with enum values being out of a range, add virReportEnumRangeError().
virReportEnumRangeError(virDomainState, 34);
results in a message
"internal error: Unexpected enum value 34 for virDomainState"
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
This function returns nothing but zero. Therefore it makes no
sense to have it returning an integer.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Commit 7e62c4cd26 (first appearing in libvirt-3.9.0 as a resolution
to rhbz #1343919) added a "generated" attribute to virMacAddr that was
set whenever a mac address was auto-generated by libvirt. This
knowledge was used in a single place - when trying to match a NetDef
from the Domain to Delete with user-provided XML. Since the XML parser
always auto-generates a MAC address for NetDefs when none is provided,
it was previously impossible to make a search where the MAC address
isn't significant, but the addition of the "generated" attribute made
it possible for the search function to ignore auto-generated MACs.
This implementation had a problem though - it was adding a field to a
"low level" struct - virMacAddr - which is used in other places with
the assumption that it contains exactly a 6 byte MAC address and
nothing else. In particular, virNWFilterSnoopEthHdr uses virMacAddr as
part of the definition of an ethernet packet header, whose layout must
of course match an actual ethernet packet. Adding the extra bools into
virNWFilterSnoopEthHdr caused the nwfilter driver's "IP discovery via
DHCP packet snooping" functionality to mysteriously stop working.
In order to fix that behavior, and prevent potential future similar
odd behavior, this patch moves the "generated" member out of
virMacAddr (so that it is again really is just a MAC address) into
virDomainNetDef, and sets it only when virDomainNetGenerateMAC() is
called from virDomainNetDefParseXML() (which is the only time we care
about it).
Resolves: https://bugzilla.redhat.com/1529338
(It should also be applied to any maintenance branch that applies
commit 7e62c4cd26 and friends to resolve
https://bugzilla.redhat.com/1343919)
Signed-off-by: Laine Stump <laine@laine.org>
This type of information defines attributes of a system
chassis, such as SMBIOS Chassis Asset Tag.
access inside VM (for example)
Linux: /sys/class/dmi/id/chassis_asset_tag.
Windows: (Get-WmiObject Win32_SystemEnclosure).SMBIOSAssetTag
wirhin Windows PowerShell.
As an example, add the following to the guest XML
<chassis>
<entry name='manufacturer'>Dell Inc.</entry>
<entry name='version'>2.12</entry>
<entry name='serial'>65X0XF2</entry>
<entry name='asset'>40000101</entry>
<entry name='sku'>Type3Sku1</entry>
</chassis>
Signed-off-by: Zhuang Yanying <ann.zhuangyanying@huawei.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
We can't really detect all the authentication data in a sane manner for
disk backing chains. Since the old RBD parser parses it in some cases as
the argv->XML convertor requires it, we can't just drop it.
Instead clear any detected authentication data in the code paths related
to disk backing chain lookup and fix the tests to cope with the change.
https://bugzilla.redhat.com/show_bug.cgi?id=1544659
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
