September 2010 - Devel - libvirt List Archives

Re: [libvirt] IPv6 structs on MacOS X
by Justin Clift 15 Sep '10

15 Sep '10

On 09/16/2010 04:52 AM, Bruno Haible wrote: <snip> > This message talks about the unportability of a field 's6_addr32' in > 'struct in6_addr'. Sure this is unportable: POSIX [1] specifies only the > presence of 's6_addr'. > > I don't see why gnulib should support this: An application can perfectly > access the 16 bytes of the s6_addr[] array. Why would it need to access a > specific part of it in a special way? My apologies. I should have been significantly clearer in what I was trying for there. :) (adding the libvirt devel mailing list back in, due to relevance) Tried compiling libvirt on OS X, which errored on this piece of IPv6 code: http://www.redhat.com/archives/libvir-list/2010-September/msg00243.html The message I quoted to Eric above, which you've then looked at, was danpb wondering whether we should be using gnulib to avoid the portability problem. This stuff is outside my area of expertise though. :) Regards and best wishes, Justin Clift

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Re: [libvirt] OSX 10.6 build failures
by Osier 15 Sep '10

15 Sep '10

----- "Justin Clift" <jclift(a)redhat.com> wrote: > From: "Justin Clift" <jclift(a)redhat.com> > To: "Libvirt Developers Mailing List" <libvir-list(a)redhat.com> > Sent: Wednesday, September 15, 2010 7:42:48 AM GMT +08:00 Beijing / Chongqing / Hong Kong / Urumqi > Subject: [libvirt] OSX 10.6 build failures > > Hi us, > > Going through the process of getting libvirt to compile on OSX, making > > notes of the failures on the way through (from a clean system) to be > fixed. > > a) libtool -> glibtool > libtoolize -> glibtoolize > > It turns out that autogen.sh is hard coded to use "libtool", and > wants the GNU version. > > OSX supplies has it's own version, without a --version option, so > autogen.sh fails. > > Installing GNU libtool through MacPorts, makes it available as > glibtool, with libtoolize being glibtoolize. > > Adjusting autogen.sh to detect that, then set LIBTOOL and > LIBTOOLIZE > appropriately was fairly trivial. > > Will submit a patch to fix that in a bit. > > > b) pkg-config > > The next thing to barf was autoconf, complaining about > AC_MSG_ERROR > not being a defined macro. > > Googling with some persistence showed this is caused by > pkg-config > not being installed. Fixed that. > > Will submit a patch for that too. Probably "pkg-config > --version" > based, copying the approach used for the other autogen.sh checks. > > > c) This is a compilation failure, one I don't readily know how to > fix: > > ... > Making all in src > make all-am > CC libvirt_util_la-network.lo > util/network.c: In function 'getIPv6Addr': > util/network.c:50: error: 'struct in6_addr' has no member named > 's6_addr16' > util/network.c:50: error: 'struct in6_addr' has no member named > 's6_addr16' > util/network.c:50: error: 'struct in6_addr' has no member named > 's6_addr16' > util/network.c:50: error: 'struct in6_addr' has no member named > 's6_addr16' > make[3]: *** [libvirt_util_la-network.lo] Error 1 > make[2]: *** [all] Error 2 > make[1]: *** [all-recursive] Error 1 > make: *** [all] Error 2 > $ > > They're the only problems so far, though most things have been > disabled > on the ./configure line so it's only the client libraries being > built. > > Anyone know how to address that third one? > % man ipv6 Address Format struct sockaddr_in6 { sa_family_t sin6_family; /* AF_INET6 */ in_port_t sin6_port; /* port number */ uint32_t sin6_flowinfo; /* IPv6 flow information */ struct in6_addr sin6_addr; /* IPv6 address */ uint32_t sin6_scope_id; /* Scope ID (new in 2.4) */ }; struct in6_addr { unsigned char s6_addr[16]; /* IPv6 address */ }; % vim libvirt/src/util/network.c 43 static int getIPv6Addr(virSocketAddrPtr addr, virIPv6AddrPtr tab) { 44 int i; 45 46 if ((addr == NULL) || (tab == NULL) || (addr->stor.ss_family != AF_INET6 )) 47 return(-1); 48 49 for (i = 0;i < 8;i++) { 50 (*tab)[i] = ntohs(addr->inet6.sin6_addr.s6_addr16[i]); 51 } 52 53 return(0); 54 } I guess it's a typo, should be "addr->inet6.sin6_addr.s6_addr[i]", but not "addr->inet6.sin6_addr.s6_addr16[i]".. :-) - Osier > Regards and best wishes, > > Justin Clift > > -- > libvir-list mailing list > libvir-list(a)redhat.com > https://www.redhat.com/mailman/listinfo/libvir-list

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[libvirt] [PATCH] virsh: change wexitstatus order to allow compilation on mac osx
by Justin Clift 15 Sep '10

15 Sep '10

This is the simple fix Daniel Veillard suggested last year: http://www.redhat.com/archives/libvir-list/2009-May/msg00459.html --- tools/virsh.c | 2 +- 1 files changed, 1 insertions(+), 1 deletions(-) diff --git a/tools/virsh.c b/tools/virsh.c index 57ea618..c148f7b 100644 --- a/tools/virsh.c +++ b/tools/virsh.c @@ -8646,7 +8646,7 @@ editFile (vshControl *ctl, const char *filename) VIR_FREE(command); return -1; } - if (command_ret != WEXITSTATUS (0)) { + if (WEXITSTATUS(command_ret) != 0) { vshError(ctl, _("%s: command exited with non-zero status"), command); VIR_FREE(command); -- 1.7.2.2

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Re: [libvirt] [PATCH] autogen.sh: added glibtool and pkg-config checks
by Bruce Korb 15 Sep '10

15 Sep '10

Please don't use my project name when talking about bootstrap process. "autogen.sh" has become a popular misnomer, so at least keep the ".sh" suffix. Thanks. On Wed, Sep 15, 2010 at 10:02 AM, Eric Blake <eblake(a)redhat.com> wrote: > [adding bug-gnulib] > > On 09/15/2010 06:36 AM, Justin Clift wrote: >> >> OSX MacPorts has libtool named as glibtool, with libtoolize >> named as glibtoolize. This patch adds support for this, and also >> adds a check for pkg-config, to warn when it is missing. > > Hmm - would it be easier to make bootstrap.conf list pkg-config as a > prerequisite, rather than having to hack up autogen.sh to do that? > > Also, if I'm reading the code right, changing bootstrap.conf to list > 'libtoolize' instead of 'libtool' as the prerequisite will let you get by > with overriding just $LIBTOOLIZE instead of both $LIBTOOL and $LIBTOOLIZE. > > Additionally it may be sufficient to just teach upstream > gnulib/build-aux/bootstrap to use 'find_tool LIBTOOLIZE libtoolize > glibtoolize', at which point re-syncing to upstream bootstrap will > automatically pick up on the right libtool for MacOS without you having to > hack libvirt's autogen.sh in the first place :) > > So, NACK to this version of the libvirt patch, and instead let me do some > gnulib work... Not to mention that Gary is working on some upstream patches > to improve bootstrap modularity, and there is also a request to add > 'bootstrap --skip-git' that I need to respond to... > > -- > Eric Blake eblake(a)redhat.com +1-801-349-2682 > Libvirt virtualization library http://libvirt.org > >

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[libvirt] [PATCH] libvirtd: improve the error message displayed on tls client auth failure
by Justin Clift 15 Sep '10

15 Sep '10

This address BZ # 556599: https://bugzilla.redhat.com/show_bug.cgi?id=556599 --- daemon/libvirtd.c | 2 +- 1 files changed, 1 insertions(+), 1 deletions(-) diff --git a/daemon/libvirtd.c b/daemon/libvirtd.c index 711360b..46e22bd 100644 --- a/daemon/libvirtd.c +++ b/daemon/libvirtd.c @@ -1226,7 +1226,7 @@ remoteCheckCertificate (gnutls_session_t session) if (i == 0) { if (!remoteCheckDN (cert)) { /* This is the most common error: make it informative. */ - VIR_ERROR0(_("remoteCheckCertificate: client's Distinguished Name is not on the list of allowed clients (tls_allowed_dn_list). Use 'openssl x509 -in clientcert.pem -text' to view the Distinguished Name field in the client certificate, or run this daemon with --verbose option.")); + VIR_ERROR0(_("remoteCheckCertificate: client's Distinguished Name is not on the list of allowed clients (tls_allowed_dn_list). Use 'certtool -i --infile clientcert.pem' to view the Distinguished Name field in the client certificate, or run this daemon with --verbose option.")); gnutls_x509_crt_deinit (cert); return -1; } -- 1.7.2.2

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[libvirt] [PATCH] maint: silence warning from libtool
by Eric Blake 14 Sep '10

14 Sep '10

I got tired of seeing this: config.status: executing libtool commands /bin/rm: cannot remove `libtoolT': No such file or directory config.status: executing po-directories commands While I was at it, there were a couple other unused variables. * configure.ac (RM, MV, TAR): Drop; nothing in libvirt directly uses this, and assigning RM interferes with libtool. --- configure.ac | 3 --- 1 files changed, 0 insertions(+), 3 deletions(-) diff --git a/configure.ac b/configure.ac index a71f5e8..5ded22b 100644 --- a/configure.ac +++ b/configure.ac @@ -122,9 +122,6 @@ AM_CONDITIONAL([HAVE_GLIBC_RPCGEN], $ac_cv_path_RPCGEN -t </dev/null >/dev/null 2>&1]) dnl Miscellaneous external programs. -AC_PATH_PROG([RM], [rm], [/bin/rm]) -AC_PATH_PROG([MV], [mv], [/bin/mv]) -AC_PATH_PROG([TAR], [tar], [/bin/tar]) AC_PATH_PROG([XMLLINT], [xmllint], [/usr/bin/xmllint]) AC_PATH_PROG([XMLCATALOG], [xmlcatalog], [/usr/bin/xmlcatalog]) AC_PATH_PROG([XSLTPROC], [xsltproc], [/usr/bin/xsltproc]) -- 1.7.2.2

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[libvirt] New wiki pages with libvirt SSH setup instructions
by Justin Clift 14 Sep '10

14 Sep '10

Hi all, Just added some new pages to the wiki, this time covering how to configure remote access to libvirt through SSH, not using root: http://wiki.libvirt.org/page/SSHSetup <--- entry page http://wiki.libvirt.org/page/SSHPolicyKitSetup This has details for several different Linux distributions: * RHEL 5 & 6 * Fedora 11-13 * Centos 5 & 6 * Ubuntu 10.04 Server & Desktop * openSUSE 11.2 onwards Does anyone have info they'd like to include for other distributions? :) Regards and best wishes, Justin Clift

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[libvirt] [PATCH] Rebuild network filter for UML guests on updates
by Soren Hansen 14 Sep '10

14 Sep '10

When nwfilter support was added to UML, I didn't realise the UML driver needed instrumentation to make updating nwfilters on the fly work. This patch adds this bit of glue. Signed-off-by: Soren Hansen <soren(a)linux2go.dk> --- src/uml/uml_driver.c | 18 ++++++++++++++++++ 1 files changed, 18 insertions(+), 0 deletions(-) diff --git a/src/uml/uml_driver.c b/src/uml/uml_driver.c index 40345d5..9101928 100644 --- a/src/uml/uml_driver.c +++ b/src/uml/uml_driver.c @@ -2198,6 +2198,18 @@ static virDriver umlDriver = { NULL, /* qemuDomainMonitorCommand */ }; +static int +umlVMFilterRebuild(virConnectPtr conn ATTRIBUTE_UNUSED, + virHashIterator iter, void *data) +{ + struct uml_driver *driver = uml_driver; + + umlDriverLock(driver); + virHashForEach(uml_driver->domains.objs, iter, data); + umlDriverUnlock(driver); + + return 0; +} static virStateDriver umlStateDriver = { .name = "UML", @@ -2207,8 +2219,14 @@ static virStateDriver umlStateDriver = { .active = umlActive, }; +static virNWFilterCallbackDriver umlCallbackDriver = { + .name = "UML", + .vmFilterRebuild = umlVMFilterRebuild, +}; + int umlRegister(void) { virRegisterDriver(&umlDriver); virRegisterStateDriver(&umlStateDriver); + virNWFilterRegisterCallbackDriver(&umlCallbackDriver); return 0; } -- 1.7.1

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[libvirt] [PATCH] virsh: Use virBuffer for generating XML
by Jiri Denemark 14 Sep '10

14 Sep '10

cmdAttachInterface and cmdAttachDisk still used vshRealloc and sprintf for generating XML, which is hardly maintainable. Let's get rid of this old code. --- tools/virsh.c | 152 ++++++++++++++++++++------------------------------------ 1 files changed, 54 insertions(+), 98 deletions(-) diff --git a/tools/virsh.c b/tools/virsh.c index 57ea618..9eb1e51 100644 --- a/tools/virsh.c +++ b/tools/virsh.c @@ -7874,8 +7874,9 @@ cmdAttachInterface(vshControl *ctl, const vshCmd *cmd) virDomainPtr dom = NULL; char *mac, *target, *script, *type, *source; int typ, ret = FALSE; - char *buf = NULL, *tmp = NULL; unsigned int flags; + virBuffer buf = VIR_BUFFER_INITIALIZER; + char *xml; if (!vshConnectionUsability(ctl, ctl->conn)) goto cleanup; @@ -7903,52 +7904,40 @@ cmdAttachInterface(vshControl *ctl, const vshCmd *cmd) } /* Make XML of interface */ - tmp = vshMalloc(ctl, 1); - buf = vshMalloc(ctl, strlen(type) + 25); - sprintf(buf, " <interface type='%s'>\n" , type); + virBufferVSprintf(&buf, "<interface type='%s'>\n" , type); - tmp = vshRealloc(ctl, tmp, strlen(source) + 28); - if (typ == 1) { - sprintf(tmp, " <source network='%s'/>\n", source); - } else if (typ == 2) { - sprintf(tmp, " <source bridge='%s'/>\n", source); - } - buf = vshRealloc(ctl, buf, strlen(buf) + strlen(tmp) + 1); - strcat(buf, tmp); + if (typ == 1) + virBufferVSprintf(&buf, " <source network='%s'/>\n", source); + else if (typ == 2) + virBufferVSprintf(&buf, " <source bridge='%s'/>\n", source); - if (target != NULL) { - tmp = vshRealloc(ctl, tmp, strlen(target) + 24); - sprintf(tmp, " <target dev='%s'/>\n", target); - buf = vshRealloc(ctl, buf, strlen(buf) + strlen(tmp) + 1); - strcat(buf, tmp); - } + if (target != NULL) + virBufferVSprintf(&buf, " <target dev='%s'/>\n", target); + if (mac != NULL) + virBufferVSprintf(&buf, " <mac address='%s'/>\n", mac); + if (script != NULL) + virBufferVSprintf(&buf, " <script path='%s'/>\n", script); - if (mac != NULL) { - tmp = vshRealloc(ctl, tmp, strlen(mac) + 25); - sprintf(tmp, " <mac address='%s'/>\n", mac); - buf = vshRealloc(ctl, buf, strlen(buf) + strlen(tmp) + 1); - strcat(buf, tmp); - } + virBufferAddLit(&buf, "</interface>\n"); - if (script != NULL) { - tmp = vshRealloc(ctl, tmp, strlen(script) + 25); - sprintf(tmp, " <script path='%s'/>\n", script); - buf = vshRealloc(ctl, buf, strlen(buf) + strlen(tmp) + 1); - strcat(buf, tmp); + if (virBufferError(&buf)) { + vshPrint(ctl, "%s", _("Failed to allocate XML buffer")); + return FALSE; } - buf = vshRealloc(ctl, buf, strlen(buf) + 19); - strcat(buf, " </interface>\n"); + xml = virBufferContentAndReset(&buf); if (vshCommandOptBool(cmd, "persistent")) { flags = VIR_DOMAIN_DEVICE_MODIFY_CONFIG; if (virDomainIsActive(dom) == 1) flags |= VIR_DOMAIN_DEVICE_MODIFY_LIVE; - ret = virDomainAttachDeviceFlags(dom, buf, flags); + ret = virDomainAttachDeviceFlags(dom, xml, flags); } else { - ret = virDomainAttachDevice(dom, buf); + ret = virDomainAttachDevice(dom, xml); } + VIR_FREE(xml); + if (ret != 0) { vshError(ctl, "%s", _("Failed to attach interface")); ret = FALSE; @@ -7960,8 +7949,7 @@ cmdAttachInterface(vshControl *ctl, const vshCmd *cmd) cleanup: if (dom) virDomainFree(dom); - VIR_FREE(buf); - VIR_FREE(tmp); + virBufferFreeAndReset(&buf); return ret; } @@ -8126,9 +8114,10 @@ cmdAttachDisk(vshControl *ctl, const vshCmd *cmd) virDomainPtr dom = NULL; char *source, *target, *driver, *subdriver, *type, *mode; int isFile = 0, ret = FALSE; - char *buf = NULL, *tmp = NULL; unsigned int flags; char *stype; + virBuffer buf = VIR_BUFFER_INITIALIZER; + char *xml; if (!vshConnectionUsability(ctl, ctl->conn)) goto cleanup; @@ -8167,77 +8156,45 @@ cmdAttachDisk(vshControl *ctl, const vshCmd *cmd) } /* Make XML of disk */ - tmp = vshMalloc(ctl, 1); - buf = vshMalloc(ctl, 23); - if (isFile) { - sprintf(buf, " <disk type='file'"); - } else { - sprintf(buf, " <disk type='block'"); - } - - if (type) { - tmp = vshRealloc(ctl, tmp, strlen(type) + 13); - sprintf(tmp, " device='%s'>\n", type); - } else { - tmp = vshRealloc(ctl, tmp, 3); - sprintf(tmp, ">\n"); - } - buf = vshRealloc(ctl, buf, strlen(buf) + strlen(tmp) + 1); - strcat(buf, tmp); - - if (driver) { - tmp = vshRealloc(ctl, tmp, strlen(driver) + 22); - sprintf(tmp, " <driver name='%s'", driver); - } else { - tmp = vshRealloc(ctl, tmp, 25); - sprintf(tmp, " <driver name='phy'"); - } - buf = vshRealloc(ctl, buf, strlen(buf) + strlen(tmp) + 1); - strcat(buf, tmp); - - if (subdriver) { - tmp = vshRealloc(ctl, tmp, strlen(subdriver) + 12); - sprintf(tmp, " type='%s'/>\n", subdriver); - } else { - tmp = vshRealloc(ctl, tmp, 4); - sprintf(tmp, "/>\n"); - } - buf = vshRealloc(ctl, buf, strlen(buf) + strlen(tmp) + 1); - strcat(buf, tmp); - - tmp = vshRealloc(ctl, tmp, strlen(source) + 25); - if (isFile) { - sprintf(tmp, " <source file='%s'/>\n", source); - } else { - sprintf(tmp, " <source dev='%s'/>\n", source); - } - buf = vshRealloc(ctl, buf, strlen(buf) + strlen(tmp) + 1); - strcat(buf, tmp); - - tmp = vshRealloc(ctl, tmp, strlen(target) + 24); - sprintf(tmp, " <target dev='%s'/>\n", target); - buf = vshRealloc(ctl, buf, strlen(buf) + strlen(tmp) + 1); - strcat(buf, tmp); + virBufferVSprintf(&buf, "<disk type='%s'", + (isFile) ? "file" : "block"); + if (type) + virBufferVSprintf(&buf, " device='%s'", type); + virBufferAddLit(&buf, ">\n"); + + virBufferVSprintf(&buf, " <driver name='%s'", + (driver) ? driver : "phy"); + if (subdriver) + virBufferVSprintf(&buf, " type='%s'", subdriver); + virBufferAddLit(&buf, "/>\n"); + + virBufferVSprintf(&buf, " <source %s='%s'/>\n", + (isFile) ? "file" : "dev", + source); + virBufferVSprintf(&buf, " <target dev='%s'/>\n", target); + if (mode) + virBufferVSprintf(&buf, " <%s/>\n", mode); + + virBufferAddLit(&buf, "</disk>\n"); - if (mode != NULL) { - tmp = vshRealloc(ctl, tmp, strlen(mode) + 11); - sprintf(tmp, " <%s/>\n", mode); - buf = vshRealloc(ctl, buf, strlen(buf) + strlen(tmp) + 1); - strcat(buf, tmp); + if (virBufferError(&buf)) { + vshPrint(ctl, "%s", _("Failed to allocate XML buffer")); + return FALSE; } - buf = vshRealloc(ctl, buf, strlen(buf) + 13); - strcat(buf, " </disk>\n"); + xml = virBufferContentAndReset(&buf); if (vshCommandOptBool(cmd, "persistent")) { flags = VIR_DOMAIN_DEVICE_MODIFY_CONFIG; if (virDomainIsActive(dom) == 1) flags |= VIR_DOMAIN_DEVICE_MODIFY_LIVE; - ret = virDomainAttachDeviceFlags(dom, buf, flags); + ret = virDomainAttachDeviceFlags(dom, xml, flags); } else { - ret = virDomainAttachDevice(dom, buf); + ret = virDomainAttachDevice(dom, xml); } + VIR_FREE(xml); + if (ret != 0) { vshError(ctl, "%s", _("Failed to attach disk")); ret = FALSE; @@ -8249,8 +8206,7 @@ cmdAttachDisk(vshControl *ctl, const vshCmd *cmd) cleanup: if (dom) virDomainFree(dom); - VIR_FREE(buf); - VIR_FREE(tmp); + virBufferFreeAndReset(&buf); return ret; } -- 1.7.2.3

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[libvirt] [PATCH] Use SED variable for `sed` binary in src/Makefile
by Mitchell Hashimoto 14 Sep '10

14 Sep '10

Hi, I've been trying to get libvirt (client) to cleanly/easily compile on BSD-based systems (in this case OS X). "./configure" runs fine but the "make" caused an error with `sed` since BSD sed was reporting some sort of regex error. I realized that the "SED" variable was populated with "gsed" which worked properly. This made the make continue (failed again later, will address that when I can). This is my first contribution to a C-based project and I don't have much experience with autotools other than using them as a consumer. Let me know if anything can be improved. Thank you, Mitchell

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