[Libvir] [PATCH] Add the check of the format of MAC address on virsh attach-interface
by Masayuki Sunou
Hi
Even if specified MAC address is invalid,
network interface is attached to the guest.
And attached network interface cannot communicate.
This patch checks the format of MAC address,
and virsh become error when it is invalid.
Signed-off-by: Masayuki Sunou <fj1826dm(a)aa.jp.fujitsu.com>
Thanks,
Masayuki Sunou.
--------------------------------------------------------------------------------
Index: include/libvirt/virterror.h
===================================================================
RCS file: /data/cvs/libvirt/include/libvirt/virterror.h,v
retrieving revision 1.26
diff -u -p -r1.26 virterror.h
--- include/libvirt/virterror.h 6 Jul 2007 14:56:15 -0000 1.26
+++ include/libvirt/virterror.h 12 Jul 2007 02:00:54 -0000
@@ -127,6 +127,7 @@ typedef enum {
VIR_WAR_NO_NETWORK, /* failed to start network */
VIR_ERR_NO_DOMAIN, /* domain not found or unexpectedly disappeared */
VIR_ERR_NO_NETWORK, /* network not found */
+ VIR_ERR_INVALID_MAC, /* invalid MAC adress */
} virErrorNumber;
/**
Index: src/virterror.c
===================================================================
RCS file: /data/cvs/libvirt/src/virterror.c,v
retrieving revision 1.28
diff -u -p -r1.28 virterror.c
--- src/virterror.c 6 Jul 2007 14:56:15 -0000 1.28
+++ src/virterror.c 12 Jul 2007 02:00:54 -0000
@@ -646,6 +646,12 @@ __virErrorMsg(virErrorNumber error, cons
else
errmsg = _("Network not found: %s");
break;
+ case VIR_ERR_INVALID_MAC:
+ if (info == NULL)
+ errmsg = _("invalid MAC adress");
+ else
+ errmsg = _("invalid MAC adress: %s");
+ break;
}
return (errmsg);
}
Index: src/xml.c
===================================================================
RCS file: /data/cvs/libvirt/src/xml.c,v
retrieving revision 1.81
diff -u -p -r1.81 xml.c
--- src/xml.c 11 Jul 2007 08:41:11 -0000 1.81
+++ src/xml.c 12 Jul 2007 02:00:55 -0000
@@ -934,8 +934,19 @@ virDomainParseXMLIfDesc(virConnectPtr co
}
virBufferAdd(buf, "(vif ", 5);
- if (mac != NULL)
+ if (mac != NULL) {
+ unsigned int addr[12];
+ int ret = sscanf((const char *)mac, "%01x%01x:%01x%01x:%01x%01x:%01x%01x:%01x%01x:%01x%01x",
+ (unsigned int*)&addr[0], (unsigned int*)&addr[1], (unsigned int*)&addr[2],
+ (unsigned int*)&addr[3], (unsigned int*)&addr[4], (unsigned int*)&addr[5],
+ (unsigned int*)&addr[6], (unsigned int*)&addr[7], (unsigned int*)&addr[8],
+ (unsigned int*)&addr[9], (unsigned int*)&addr[10], (unsigned int*)&addr[11]);
+ if (ret != 12 || strlen(mac) != 17) {
+ virXMLError(conn, VIR_ERR_INVALID_MAC, (const char *) mac, 0);
+ goto error;
+ }
virBufferVSprintf(buf, "(mac '%s')", (const char *) mac);
+ }
if (source != NULL) {
if (typ == 0)
virBufferVSprintf(buf, "(bridge '%s')", (const char *) source);
17 years, 3 months
[Libvir] [PATCH] Fix strange message on virsh attach-device
by Masayuki Sunou
Hi
Virsh attach-device outputs a strange message,
when XML whose top element is not <device> or <interface>.
----------------------------------------------------------------------
libvir: Xen Daemon error : POST operation failed: (xend.err "object of type 'NoneType' has no len()")
error: Failed to attach device from test.xml
----------------------------------------------------------------------
This patch fixes it by not calling Xen in this case.
Signed-off-by: Masayuki Sunou <fj1826dm(a)aa.jp.fujitsu.com>
Thanks,
Masayuki Sunou.
----------------------------------------------------------------------
Index: libvirt/src/xml.c
===================================================================
RCS file: /data/cvs/libvirt/src/xml.c,v
retrieving revision 1.81
diff -u -p -r1.81 xml.c
--- libvirt/src/xml.c 11 Jul 2007 08:41:11 -0000 1.81
+++ libvirt/src/xml.c 13 Jul 2007 02:48:04 -0000
@@ -1337,6 +1337,8 @@ virParseXMLDevice(virConnectPtr conn, ch
else if (xmlStrEqual(node->name, BAD_CAST "interface")) {
if (virDomainParseXMLIfDesc(conn, node, &buf, hvm, xendConfigVersion) != 0)
goto error;
+ } else {
+ goto error;
}
cleanup:
if (xml != NULL)
17 years, 3 months
[Libvir] PATCH: Fix crash if client acl check fails
by Daniel P. Berrange
There was a couple of places where if the ACL check for an incoming client
failed, it would go on and register the client's FD in the event loop
anyway. The trouble is, after the ACL failed, the client had been forcably
disconnected & the client struct free'd, so the daemon died in the event
loop a short time later. This patch fixes it & makes a couple of other
places more paranoid about checking too
Dan.
--
|=- Red Hat, Engineering, Emerging Technologies, Boston. +1 978 392 2496 -=|
|=- Perl modules: http://search.cpan.org/~danberr/ -=|
|=- Projects: http://freshmeat.net/~danielpb/ -=|
|=- GnuPG: 7D3B9505 F3C9 553F A1DA 4AC2 5648 23C1 B3DF F742 7D3B 9505 -=|
17 years, 3 months
[Libvir] PATCH: More useful error messages with missing certs
by Daniel P. Berrange
On the server end if you try to start the server with TLS enabled and you
don't have the certs setup, you get a cryptic:
gnutls_certificate_set_x509_trust_file: Error while reading file.
Rather useless the gnutls error message not telling you what file was
missing.
Similarly with virsh:
# ~/usr/bin/virsh --connect qemu://localhost/system list
libvir: Remote error : Error while reading file.
Since GNU TLS doesn't even tell you the actual problem - was it wrong
permissions, or missing file altogether, I decided its better to do an
explicit 'stat' check ahead of time.
So now it gives:
$ ~/usr/bin/virsh --connect qemu://celery.virt.boston.redhat.com/system start demo
libvir: Remote error : Cannot access CA certificate
'/home/berrange/usr/etc/pki/CA/cacert.pem': No such file or directory (2)
Or
$ ~/usr/bin/virsh --connect qemu://celery.virt.boston.redhat.com/system start demo
libvir: Remote error : Cannot access CA certificate
'/home/berrange/usr/etc/pki/CA/cacert.pem': Permission denied (13)
Or in the daemon
# /usr/sbin/libvirtd --listen
Cannot access CA certificate '/home/berrange/usr/etc/pki/CA/cacert.pem': No such file or directory (2)
Dan.
--
|=- Red Hat, Engineering, Emerging Technologies, Boston. +1 978 392 2496 -=|
|=- Perl modules: http://search.cpan.org/~danberr/ -=|
|=- Projects: http://freshmeat.net/~danielpb/ -=|
|=- GnuPG: 7D3B9505 F3C9 553F A1DA 4AC2 5648 23C1 B3DF F742 7D3B 9505 -=|
17 years, 3 months
[Libvir] Next features and target for development
by Daniel Veillard
Hi all,
now that 0.3.0 is out, it's probably time to build the next set of
features we aims at developping in the next months, the list I have
currently is short, but still significant:
- migration API: now that we have remote support it should be
possible to build an API for migration of domains between
2 connections. Could be as simple as
int virDomainMigrate(virDomainPtr domain, virConnectPtr to, int flags);
sounds like a fun and very useful part.
- USB support: we discussed that already, but the initial patch did
not match the XML format suggestions we should try to resurrect this
http://libvirt.org/search.php?query=USB&scope=LISTS
http://www.redhat.com/archives/libvir-list/2007-March/thread.html#00118
- Support for Xen-API new entry points at least for localhost access
since we have remote support now
- platform support: resolve the PPC64 issues
- more engine support: OpenVZ is on the work, is there interest in
lguest, UML or for example Solaris zones ?
Now is a good time to suggest new potential directions, and I certainly forgot
some obvious points, so what did I missed ?
Daniel
--
Red Hat Virtualization group http://redhat.com/virtualization/
Daniel Veillard | virtualization library http://libvirt.org/
veillard(a)redhat.com | libxml GNOME XML XSLT toolkit http://xmlsoft.org/
http://veillard.com/ | Rpmfind RPM search engine http://rpmfind.net/
17 years, 3 months
[Libvir] Starting a domain
by Shuveb Hussain
Hi,
suspend() -> resume()
save() -> restore()
shutdown() -> ???
Which method should I map in the OpenVZ driver that starts a domain that
has been shutdown. Does the 'reboot' method do the job here as well?
Thanks & Regards,
--
Shuveb Hussain
Unix is very user friendly. It is just a
little choosy about who its friends are
http://www.binarykarma.com
17 years, 3 months
[Libvir] big-endian support for libvirt - introduce GUEST_HANDLE infrastructure ?
by Christian Ehrhardt
Hello everyone,
we currently try to use/port libvirt to run on xenppc. While doing that
I found a endianess issue.
First a simple example:
Sample code:
#include <stdio.h>
union u {
int i;
long long l;
};
int main(void)
{
union u u;
u.l = 0;
u.i = ~0;
printf("%016llx\n", u.l);
return 0;
}
Little-endian output: 00000000ffffffff
Big-endian output: ffffffff00000000
Now look at the padding in e.g. xen_v2s3_getdomaininfolistop: it
doesn't work on big-endian systems. This problem is why the
GUEST_HANDLE infrastructure is present in Xen. To work on
big-endian systems, libvirt will need this or a similar mechanism.
--- Current Questions ---
We could now add several ugly ifdefs to libvirt code to differentiate
powerpc from the others and solve the issue described above, but I think
thats not a good solution.
The GUEST_HANDLE mechanism would provide an architecture abstraction and
is already implemented/working in libxc.
The question is, shouldn't libvirt actually use the GUEST_HANDLE
mechanism like libxc does (at least for the _v2d5_ structures) or are
there big arguments against it?
I would create a patch to add the GUEST_HANDLE stuff in libvirt if there
is nothing against it, but I will need some help to test it on
x86/x86_64/ia64 since I have no such machines here.
If there is a major reason against the GUEST_HANDLE code, are there
other suggestions/preferences how to solve this?
Below is the technical background in a more verbose way for anyone
interested
--- Code Affected ---
More or less everything in libvirt that would use GUEST_HANDLE in libxc:
I saw the effect on a bad pointer passed down by the structure I use for
my example below, but in the end it may affect all the stuff that uses
the *GUEST_HANDLE* stuff in libxc which are e.g. uchar,ulong,... here an
example:
libxc:
uint64_aligned_t max_pages; // <- arch dependent mapping of
uint64_aligned_t
libvirt:
#define ALIGN_64 __attribute__((aligned(8)))
uint64_t max_pages ALIGN_64; // <- this align is fix on all
architectures
--- The Issue in libvirt in one example ---
XEN_GUEST_HANDLE usage in libxc:
- XEN_GUEST_HANDLE is defined arch specific giving the arch the
posibility to pad/align as needed. See
xen/tools/libxc/xen/arch-powerpc.h for example.
- xen/tools use set_xen_guest_handle and get_xen_guest_handle to
set/access these handles and let the arch the posibility to handle any
specific needs.
Example:
struct xen_sysctl_getdomaininfolist {
domid_t first_domain;
uint32_t max_domains;
XEN_GUEST_HANDLE_64(xen_domctl_getdomaininfo_t) buffer;
uint32_t num_domains;
};
The arch defined XEN_GUEST_HANDLE_64 leads to the following type for
buffer on powerpc (see the initial padding):
typedef struct { \
int __pad[(sizeof (long long) - sizeof (void *)) / sizeof (int)]; \
xen_domctl_getdomaininfo_t *p;
} __attribute__((__aligned__(8)))
__guest_handle_xen_domctl_getdomaininfo_t
In this scenario a 32bit pointer for *p with 0xFFFFFFFF will be stored
as 0xPADPADPAFFFFFFFF and read in a valid way by the 64bit host that
receives this syscall.
XEN_GUEST_HANDLE usage in libvirt:
- In my example where XEN_GUEST_HANDLE is in libxc libvirt currently
uses a union based structure like the following:
struct xen_v2s3_getdomaininfolistop {
domid_t first_domain;
uint32_t max_domains;
union {
struct xen_v2d5_getdomaininfo *v;
uint64_t pad ALIGN_64;
} buffer;
uint32_t num_domains;
};
typedef struct xen_v2s3_getdomaininfolistop xen_v2s3_getdomaininfolistop;
The union used here to add the 64 bit padding does not work on big
endian powerpc because reading this two half words in 64bit receiver
gives 0xFFFFFFFF00000000 (The two half words are stored in the wrong
order) while on ia64 it is read as the the valid 0x00000000FFFFFFFF.
P.S. Thanks Hollis for the simple example code
--
Grüsse / regards,
Christian Ehrhardt
IBM Linux Technology Center, Open Virtualization
+49 7031/16-3385
Ehrhardt(a)linux.vnet.ibm.com
Ehrhardt(a)de.ibm.com
IBM Deutschland Entwicklung GmbH
Vorsitzender des Aufsichtsrats: Johann Weihen
Geschäftsführung: Herbert Kircher
Sitz der Gesellschaft: Böblingen
Registergericht: Amtsgericht Stuttgart, HRB 243294
17 years, 3 months
[Libvir] xen long-list s-expression
by Daniel Miles
Hello everone, does anybody know if libvirt has any way of getting the full
s-expression that xm list --long <domID> produces?
Or failing that, some way to get the location property under
device(vfb(location <location string>)) ?
17 years, 3 months
