- Devel - libvirt List Archives

[Libvir] API "int virDomainRestore(Conn, from)"
by Daniel Schwager 23 Jan '08

23 Jan '08

Hi, I would like to restore a domain. I think, after restoring the domain, the vnc-port maybe has changed (because e.g. another domain use the old VNC-port at the meantime). If I do not know the domainname I restored, I have no possibility to get this vnc-port or connect to the restored domain. Is this correct ? So, would it not be better to change the API to virDomainPtr virDomainRestore(Conn, from) regards Danny ------------------------------------------------------------------- DT Netsolution GmbH - Taläckerstr. 30 - D-70437 Stuttgart Geschäftsführer: Daniel Schwager, Stefan Hörz - HRB Stuttgart 19870 Tel: +49-711-849910-32, Fax: -932 - Mailto:daniel.schwager@dtnet.de

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[Libvir] Any sample code to use virConnectOpenAuth() in C binding ?
by Arun Sharma 23 Jan '08

23 Jan '08

Hello All, Can anyone provide me sample code for connecting hypervisor using credentials. As of now i have implemented using(virConnectOpen(NULL)) , but this function does not takes any credential information. I saw that there is function (virConnectOpenAuth()) which can be used , but i don;t know any way to implement Thanks in advance. -- Regards Arun Sharma 0-934-829-3810

2 1

[Libvir] Windows sizeof(long) != Linux sizeof(long)
by Daniel P. Berrange 23 Jan '08

23 Jan '08

Just discovered that on x86_64, Windows and Linux differ in what they think sizeof(long) to be. http://lists.xensource.com/archives/html/xen-devel/2008-01/msg00736.html http://www.winehq.org/pipermail/wine-devel/2005-July/038602.html Windows i686: sizeof(long) == 4, sizeof(void*) == 4 Windows x86_64: sizeof(long) == 4, sizeof(void*) == 8 Linux i686: sizeof(long) == 4, sizeof(void*) == 4 Linux x86_64: sizeof(long) == 8, sizeof(void*) == 8 Unfortunately we have a number of APIs which use 'long' in the public header file for dealing with VM memory. Fortunately they are all using memory in size of KB, so we are not totally doomed until people start wanting to manage VMs with > 2 TB of RAM. Also fortunately, the wire-encoding for these APIs all uses hyper, so on the wire everything is 64-bit guarenteed. Eventually though we might want to consider adding struct virDomainInfo64 struct virNodeInfo64 virDomainGetMemory64 virDomainSetMemory64 virDomainSetMaxMemory64 ....simply replacing 'long' with 'long long' in these 5 APIs so we have public APIs whose precision matches the wire encoding. More immediately though, we need to be careful that there is no code that assumes sizeof(long) == sizeof(void*) - eg any places we cast pointers to integers and back again will break on Windows 64. Again fortunately, so far I can only find places going from int -> pointer -> int which is OK because we're not loosing precision. Regards, 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 -=|

5 4

[Libvir] PortableXDR - an XDR library for Windows and Mac OS X
by Richard W.M. Jones 23 Jan '08

23 Jan '08

This is a formal project to support a known XDR platform on Windows and Mac OS X. It includes / supersedes the XDR port that Windows users were told to use before to get libvirt to compile. http://et.redhat.com/~rjones/portablexdr/ Rich. -- Emerging Technologies, Red Hat - http://et.redhat.com/~rjones/ Registered Address: Red Hat UK Ltd, Amberley Place, 107-111 Peascod Street, Windsor, Berkshire, SL4 1TE, United Kingdom. Registered in England and Wales under Company Registration No. 03798903

1 0

[Libvir] Remove useless "if (foo)" before "free (foo)".
by Jim Meyering 23 Jan '08

23 Jan '08

Likewise, given if (foo != NULL) free (foo); remove the useless "if" test. Do the same for sexpr_free, since it has similar semantics. Detect with this: (-0x3b tells Perl to use ';' as the input record separator) perl -0x3b -ne '/\b(if $(.+?)(?:\s*!=\s*NULL\s*)?$\s+(sexpr_)?free *$\2$)/s and print "$ARGV: $1\n"'\ $(git ls-files) Note that it also changes the code produced by generator.py. This is just a heads-up. Before committing it, I will add a rule using something like the above to help avoid regressions. BTW, there is some very misleading indentation in the vicinity of some of these changes, but I didn't correct any of that. Signed-off-by: Jim Meyering <meyering(a)redhat.com> --- proxy/libvirt_proxy.c | 3 +- python/generator.py | 2 +- qemud/qemud.c | 5 +-- src/buf.c | 3 +- src/conf.c | 7 +---- src/hash.c | 15 ++++--------- src/iptables.c | 6 +--- src/libvirt.c | 6 ++-- src/openvz_conf.c | 3 +- src/qemu_conf.c | 8 ++---- src/qemu_driver.c | 18 +++++----------- src/remote_internal.c | 26 ++++++++++++------------ src/test.c | 24 +++++++-------------- src/virsh.c | 53 ++++++++++++++++-------------------------------- src/virterror.c | 12 +++------- src/xen_internal.c | 9 ++----- src/xen_unified.c | 12 +++------- src/xend_internal.c | 44 +++++++++++++--------------------------- src/xm_internal.c | 9 ++----- src/xml.c | 21 ++++++------------- src/xmlrpc.c | 20 +++++------------- src/xs_internal.c | 2 - tests/testutils.c | 3 +- tests/xencapstest.c | 3 +- tests/xmconfigtest.c | 3 +- 25 files changed, 110 insertions(+), 207 deletions(-) diff --git a/proxy/libvirt_proxy.c b/proxy/libvirt_proxy.c index d8f2e64..5ccf855 100644 --- a/proxy/libvirt_proxy.c +++ b/proxy/libvirt_proxy.c @@ -505,8 +505,7 @@ retry2: memcpy(&request.extra.str[0], uuid, VIR_UUID_BUFLEN); strcpy(&request.extra.str[VIR_UUID_BUFLEN], name); } - if (name) - free(name); + free(name); break; } case VIR_PROXY_LOOKUP_UUID: { diff --git a/python/generator.py b/python/generator.py index 7625a93..30b03fd 100755 --- a/python/generator.py +++ b/python/generator.py @@ -375,7 +375,7 @@ def print_function_wrapper(name, output, export, include): if ret[0] == 'void': if file == "python_accessor": if args[1][1] == "char *": - c_call = "\n if (%s->%s != NULL) free(%s->%s);\n" % ( + c_call = "\n free(%s->%s);\n" % ( args[0][0], args[1][0], args[0][0], args[1][0]) c_call = c_call + " %s->%s = (%s)strdup((const xmlChar *)%s);\n" % (args[0][0], args[1][0], args[1][1], args[1][0]) diff --git a/qemud/qemud.c b/qemud/qemud.c index 467e011..4cbe04e 100644 --- a/qemud/qemud.c +++ b/qemud/qemud.c @@ -1132,7 +1132,7 @@ static void qemudDispatchClientFailure(struct qemud_server *server, struct qemud #if HAVE_SASL if (client->saslconn) sasl_dispose(&client->saslconn); - if (client->saslUsername) free(client->saslUsername); + free(client->saslUsername); #endif if (client->tlssession) gnutls_deinit (client->tlssession); close(client->fd); @@ -1638,8 +1638,7 @@ static void qemudCleanup(struct qemud_server *server) { if (server->saslUsernameWhitelist) { char **list = server->saslUsernameWhitelist; while (*list) { - if (*list) - free(*list); + free(*list); list++; } } diff --git a/src/buf.c b/src/buf.c index 5f58027..188d040 100644 --- a/src/buf.c +++ b/src/buf.c @@ -150,8 +150,7 @@ void virBufferFree(virBufferPtr buf) { if (buf) { - if (buf->content) - free(buf->content); + free(buf->content); free(buf); } } diff --git a/src/conf.c b/src/conf.c index 62c42ff..8e66d84 100644 --- a/src/conf.c +++ b/src/conf.c @@ -490,7 +490,6 @@ virConfParseValue(virConfParserCtxtPtr ctxt) ret = calloc(1, sizeof(*ret)); if (ret == NULL) { virConfError(NULL, VIR_ERR_NO_MEMORY, _("allocating configuration"), 0); - if (str != NULL) free(str); return(NULL); } @@ -642,8 +641,7 @@ virConfParseStatement(virConfParserCtxtPtr ctxt) if (virConfAddEntry(ctxt->conf, name, value, comm) == NULL) { free(name); virConfFreeValue(value); - if (comm != NULL) - free(comm); + free(comm); return(-1); } return(0); @@ -776,8 +774,7 @@ __virConfFree(virConfPtr conf) virConfEntryPtr next; free(tmp->name); virConfFreeValue(tmp->value); - if (tmp->comment) - free(tmp->comment); + free(tmp->comment); next = tmp->next; free(tmp); tmp = next; diff --git a/src/hash.c b/src/hash.c index d95eea9..4e4ce60 100644 --- a/src/hash.c +++ b/src/hash.c @@ -226,8 +226,7 @@ virHashFree(virHashTablePtr table, virHashDeallocator f) next = iter->next; if ((f != NULL) && (iter->payload != NULL)) f(iter->payload, iter->name); - if (iter->name) - free(iter->name); + free(iter->name); iter->payload = NULL; if (!inside_table) free(iter); @@ -453,8 +452,7 @@ virHashRemoveEntry(virHashTablePtr table, const char *name, if ((f != NULL) && (entry->payload != NULL)) f(entry->payload, entry->name); entry->payload = NULL; - if (entry->name) - free(entry->name); + free(entry->name); if (prev) { prev->next = entry->next; free(entry); @@ -538,8 +536,7 @@ int virHashRemoveSet(virHashTablePtr table, virHashSearcher iter, virHashDealloc if (iter(entry->payload, entry->name, data)) { count++; f(entry->payload, entry->name); - if (entry->name) - free(entry->name); + free(entry->name); if (prev) { prev->next = entry->next; free(entry); @@ -812,8 +809,7 @@ __virGetDomain(virConnectPtr conn, const char *name, const unsigned char *uuid) error: pthread_mutex_unlock(&conn->lock); if (ret != NULL) { - if (ret->name != NULL) - free(ret->name ); + free(ret->name ); free(ret); } return(NULL); @@ -946,8 +942,7 @@ __virGetNetwork(virConnectPtr conn, const char *name, const unsigned char *uuid) error: pthread_mutex_unlock(&conn->lock); if (ret != NULL) { - if (ret->name != NULL) - free(ret->name ); + free(ret->name ); free(ret); } return(NULL); diff --git a/src/iptables.c b/src/iptables.c index 5ac9be6..b59faa4 100644 --- a/src/iptables.c +++ b/src/iptables.c @@ -254,8 +254,7 @@ iptRulesSave(iptRules *rules) static void iptRuleFree(iptRule *rule) { - if (rule->rule) - free(rule->rule); + free(rule->rule); rule->rule = NULL; if (rule->argv) { @@ -488,8 +487,7 @@ iptablesAddRemoveRule(iptRules *rules, int action, const char *arg, ...) } error: - if (rule) - free(rule); + free(rule); if (argv) { n = 0; diff --git a/src/libvirt.c b/src/libvirt.c index e400783..af81930 100644 --- a/src/libvirt.c +++ b/src/libvirt.c @@ -615,7 +615,7 @@ do_open (const char *name, return ret; failed: - if (ret->name) free (ret->name); + free (ret->name); if (ret->driver) ret->driver->close (ret); if (uri) xmlFreeURI(uri); virUnrefConnect(ret); @@ -1978,8 +1978,8 @@ virDomainMigrate (virDomainPtr domain, ddomain = virDomainLookupByName (dconn, dname); done: - if (uri_out) free (uri_out); - if (cookie) free (cookie); + free (uri_out); + free (cookie); return ddomain; } diff --git a/src/openvz_conf.c b/src/openvz_conf.c index a886001..4e4019c 100644 --- a/src/openvz_conf.c +++ b/src/openvz_conf.c @@ -494,8 +494,7 @@ static struct openvz_vm_def return def; bail_out: - if (prop) - free(prop); + free(prop); if (obj) xmlXPathFreeObject(obj); if (ctxt) diff --git a/src/qemu_conf.c b/src/qemu_conf.c index 922223e..0de641d 100644 --- a/src/qemu_conf.c +++ b/src/qemu_conf.c @@ -1379,8 +1379,7 @@ static struct qemud_vm_def *qemudParseXML(virConnectPtr conn, return def; error: - if (prop) - free(prop); + free(prop); if (obj) xmlXPathFreeObject(obj); if (ctxt) @@ -1468,8 +1467,7 @@ qemudNetworkIfaceConnect(virConnectPtr conn, no_memory: qemudReportError(conn, NULL, NULL, VIR_ERR_NO_MEMORY, "tapfds"); error: - if (retval) - free(retval); + free(retval); if (tapfd != -1) close(tapfd); return NULL; @@ -1941,7 +1939,7 @@ qemudParseVMDeviceDef(virConnectPtr conn, error: if (xml) xmlFreeDoc(xml); - if (dev) free(dev); + free(dev); return NULL; } diff --git a/src/qemu_driver.c b/src/qemu_driver.c index 566fb76..71a3125 100644 --- a/src/qemu_driver.c +++ b/src/qemu_driver.c @@ -228,7 +228,7 @@ qemudStartup(void) { out_of_memory: qemudLog (QEMUD_ERR, "qemudStartup: out of memory"); - if (base) free (base); + free (base); free(qemu_driver); qemu_driver = NULL; return -1; @@ -330,17 +330,11 @@ qemudShutdown(void) { qemu_driver->nactivenetworks = 0; qemu_driver->ninactivenetworks = 0; - if (qemu_driver->configDir) - free(qemu_driver->configDir); - if (qemu_driver->autostartDir) - free(qemu_driver->autostartDir); - if (qemu_driver->networkConfigDir) - free(qemu_driver->networkConfigDir); - if (qemu_driver->networkAutostartDir) - free(qemu_driver->networkAutostartDir); - - if (qemu_driver->vncTLSx509certdir) - free(qemu_driver->vncTLSx509certdir); + free(qemu_driver->configDir); + free(qemu_driver->autostartDir); + free(qemu_driver->networkConfigDir); + free(qemu_driver->networkAutostartDir); + free(qemu_driver->vncTLSx509certdir); if (qemu_driver->brctl) brShutdown(qemu_driver->brctl); diff --git a/src/remote_internal.c b/src/remote_internal.c index 860b4d8..4d855ab 100644 --- a/src/remote_internal.c +++ b/src/remote_internal.c @@ -735,13 +735,13 @@ doRemoteOpen (virConnectPtr conn, cleanup: /* Free up the URL and strings. */ - if (name) free (name); - if (command) free (command); - if (sockname) free (sockname); - if (authtype) free (authtype); - if (netcat) free (netcat); - if (username) free (username); - if (port) free (port); + free (name); + free (command); + free (sockname); + free (authtype); + free (netcat); + free (username); + free (port); if (cmd_argv) { char **cmd_argv_ptr = cmd_argv; while (*cmd_argv_ptr) { @@ -1139,10 +1139,10 @@ doRemoteClose (virConnectPtr conn, struct private_data *priv) #endif /* Free hostname copy */ - if (priv->hostname) free (priv->hostname); + free (priv->hostname); /* See comment for remoteType. */ - if (priv->type) free (priv->type); + free (priv->type); /* Free private data. */ priv->magic = DEAD; @@ -3267,7 +3267,7 @@ remoteAuthSASL (virConnectPtr conn, struct private_data *priv, int in_open, /* This server call shows complete, and earlier client step was OK */ if (complete && err == SASL_OK) { - if (serverin) free(serverin); + free(serverin); break; } } @@ -3297,9 +3297,9 @@ remoteAuthSASL (virConnectPtr conn, struct private_data *priv, int in_open, ret = 0; cleanup: - if (localAddr) free(localAddr); - if (remoteAddr) free(remoteAddr); - if (serverin) free(serverin); + free(localAddr); + free(remoteAddr); + free(serverin); free(saslcb); remoteAuthFreeCredentials(cred, ncred); diff --git a/src/test.c b/src/test.c index d228b31..d39207f 100644 --- a/src/test.c +++ b/src/test.c @@ -354,8 +354,7 @@ static int testLoadDomain(virConnectPtr conn, return (handle); error: - if (name) - free(name); + free(name); return (-1); } @@ -525,16 +524,11 @@ static int testLoadNetwork(virConnectPtr conn, return (handle); error: - if (ipaddress) - free(ipaddress); - if (ipnetmask) - free(ipnetmask); - if (dhcpstart) - free(dhcpstart); - if (dhcpend) - free(dhcpend); - if (name) - free(name); + free(ipaddress); + free(ipnetmask); + free(dhcpstart); + free(dhcpend); + free(name); return (-1); } @@ -838,10 +832,8 @@ static int testOpenFromFile(virConnectPtr conn, return (0); error: - if (domains != NULL) - free(domains); - if (networks != NULL) - free(networks); + free(domains); + free(networks); if (xml) xmlFreeDoc(xml); if (fd != -1) diff --git a/src/virsh.c b/src/virsh.c index 78c7c85..d081008 100644 --- a/src/virsh.c +++ b/src/virsh.c @@ -428,8 +428,7 @@ cmdConnect(vshControl * ctl, vshCmd * cmd) ctl->conn = NULL; } - if (ctl->name) - free(ctl->name); + free(ctl->name); ctl->name = vshStrdup(ctl, vshCommandOptString(cmd, "name", NULL)); if (!ro) { @@ -577,8 +576,7 @@ cmdList(vshControl * ctl, vshCmd * cmd ATTRIBUTE_UNUSED) maxname = virConnectNumOfDefinedDomains(ctl->conn); if (maxname < 0) { vshError(ctl, FALSE, "%s", _("Failed to list inactive domains")); - if (ids) - free(ids); + free(ids); return FALSE; } if (maxname) { @@ -586,8 +584,7 @@ cmdList(vshControl * ctl, vshCmd * cmd ATTRIBUTE_UNUSED) if ((maxname = virConnectListDefinedDomains(ctl->conn, names, maxname)) < 0) { vshError(ctl, FALSE, "%s", _("Failed to list inactive domains")); - if (ids) - free(ids); + free(ids); free(names); return FALSE; } @@ -639,10 +636,8 @@ cmdList(vshControl * ctl, vshCmd * cmd ATTRIBUTE_UNUSED) virDomainFree(dom); free(names[i]); } - if (ids) - free(ids); - if (names) - free(names); + free(ids); + free(names); return TRUE; } @@ -1217,8 +1212,7 @@ cmdSchedinfo(vshControl * ctl, vshCmd * cmd) } } cleanup: - if (params) - free(params); + free(params); virDomainFree(dom); return ret_val; } @@ -2513,8 +2507,7 @@ cmdNetworkList(vshControl * ctl, vshCmd * cmd ATTRIBUTE_UNUSED) maxinactive = virConnectNumOfDefinedNetworks(ctl->conn); if (maxinactive < 0) { vshError(ctl, FALSE, "%s", _("Failed to list inactive networks")); - if (activeNames) - free(activeNames); + free(activeNames); return FALSE; } if (maxinactive) { @@ -2522,8 +2515,7 @@ cmdNetworkList(vshControl * ctl, vshCmd * cmd ATTRIBUTE_UNUSED) if ((maxinactive = virConnectListDefinedNetworks(ctl->conn, inactiveNames, maxinactive)) < 0) { vshError(ctl, FALSE, "%s", _("Failed to list inactive networks")); - if (activeNames) - free(activeNames); + free(activeNames); free(inactiveNames); return FALSE; } @@ -2581,10 +2573,8 @@ cmdNetworkList(vshControl * ctl, vshCmd * cmd ATTRIBUTE_UNUSED) virNetworkFree(network); free(inactiveNames[i]); } - if (activeNames) - free(activeNames); - if (inactiveNames) - free(inactiveNames); + free(activeNames); + free(inactiveNames); return TRUE; } @@ -3230,10 +3220,8 @@ cmdAttachInterface(vshControl * ctl, vshCmd * cmd) cleanup: if (dom) virDomainFree(dom); - if (buf) - free(buf); - if (tmp) - free(tmp); + free(buf); + free(tmp); return ret; } @@ -3516,10 +3504,8 @@ cmdAttachDisk(vshControl * ctl, vshCmd * cmd) cleanup: if (dom) virDomainFree(dom); - if (buf) - free(buf); - if (tmp) - free(tmp); + free(buf); + free(tmp); return ret; } @@ -3868,8 +3854,7 @@ vshCommandOptFree(vshCmdOpt * arg) a = a->next; - if (tmp->data) - free(tmp->data); + free(tmp->data); free(tmp); } } @@ -4267,7 +4252,7 @@ vshCommandParse(vshControl * ctl, char *cmdstr) c->next = NULL; if (!vshCommandCheckOpts(ctl, c)) { - if(c) free(c); + free(c); goto syntaxError; } @@ -4286,8 +4271,7 @@ vshCommandParse(vshControl * ctl, char *cmdstr) vshCommandFree(ctl->cmd); if (first) vshCommandOptFree(first); - if (tkdata) - free(tkdata); + free(tkdata); return FALSE; } @@ -4791,8 +4775,7 @@ static int vshDeinit(vshControl * ctl) { vshCloseLogFile(ctl); - if (ctl->name) - free(ctl->name); + free(ctl->name); if (ctl->conn) { if (virConnectClose(ctl->conn) != 0) { ctl->conn = NULL; /* prevent recursive call from vshError() */ diff --git a/src/virterror.c b/src/virterror.c index 0c0423b..bf4062d 100644 --- a/src/virterror.c +++ b/src/virterror.c @@ -109,14 +109,10 @@ virResetError(virErrorPtr err) { if (err == NULL) return; - if (err->message != NULL) - free(err->message); - if (err->str1 != NULL) - free(err->str1); - if (err->str2 != NULL) - free(err->str2); - if (err->str3 != NULL) - free(err->str3); + free(err->message); + free(err->str1); + free(err->str2); + free(err->str3); memset(err, 0, sizeof(virError)); } diff --git a/src/xen_internal.c b/src/xen_internal.c index 2ca1052..133c253 100644 --- a/src/xen_internal.c +++ b/src/xen_internal.c @@ -1680,8 +1680,7 @@ virXen_setvcpumap(int handle, int id, unsigned int vcpu, op.u.setvcpumapd5.cpumap.nr_cpus = nr_cpus; } ret = xenHypervisorDoV2Dom(handle, &op); - if (new) - free(new); + free(new); if (unlock_pages(cpumap, maplen) < 0) { virXenError(NULL, VIR_ERR_XEN_CALL, " release", maplen); @@ -2056,15 +2055,13 @@ xenHypervisorInit(void) virXenError(NULL, VIR_ERR_XEN_CALL, " ioctl ", IOCTL_PRIVCMD_HYPERCALL); close(fd); in_init = 0; - if (ipt) - free(ipt); + free(ipt); return(-1); done: close(fd); in_init = 0; - if (ipt) - free(ipt); + free(ipt); return(0); } diff --git a/src/xen_unified.c b/src/xen_unified.c index 187b7f5..d46e63b 100644 --- a/src/xen_unified.c +++ b/src/xen_unified.c @@ -200,12 +200,9 @@ xenDomainUsedCpus(virDomainPtr dom) } done: - if (cpulist != NULL) - free(cpulist); - if (cpumap != NULL) - free(cpumap); - if (cpuinfo != NULL) - free(cpuinfo); + free(cpulist); + free(cpumap); + free(cpuinfo); return(res); } @@ -912,9 +909,8 @@ xenUnifiedDomainDumpXML (virDomainPtr dom, int flags) char *cpus, *res; cpus = xenDomainUsedCpus(dom); res = xenDaemonDomainDumpXML(dom, flags, cpus); - if (cpus != NULL) free(cpus); - return(res); + return(res); } if (priv->opened[XEN_UNIFIED_PROXY_OFFSET]) return xenProxyDomainDumpXML(dom, flags); diff --git a/src/xend_internal.c b/src/xend_internal.c index a9fc332..61af69b 100644 --- a/src/xend_internal.c +++ b/src/xend_internal.c @@ -620,8 +620,7 @@ xend_op_ext2(virConnectPtr xend, const char *path, char *error, } ret = http2unix(xend, xend_post(xend, path, buf.content, error, n_error)); - if (buf.content != NULL) - free(buf.content); + free(buf.content); return ret; } @@ -1640,10 +1639,8 @@ xend_parse_sexp_desc(virConnectPtr conn, struct sexpr *root, virBufferAdd(&buf, " </disk>\n", 12); bad_parse: - if (drvName) - free(drvName); - if (drvType) - free(drvType); + free(drvName); + free(drvType); } else if (sexpr_lookup(node, "device/vif")) { const char *tmp2; tmp2 = sexpr_node(node, "device/vif/script"); @@ -1809,8 +1806,7 @@ xend_parse_sexp_desc(virConnectPtr conn, struct sexpr *root, return (buf.content); error: - if (buf.content != NULL) - free(buf.content); + free(buf.content); return (NULL); } @@ -2809,7 +2805,6 @@ xenDaemonListDomains(virConnectPtr conn, int *ids, int maxids) } error: - if (root != NULL) sexpr_free(root); return(ret); } @@ -2843,7 +2838,6 @@ xenDaemonNumOfDomains(virConnectPtr conn) } error: - if (root != NULL) sexpr_free(root); return(ret); } @@ -2877,8 +2871,7 @@ xenDaemonLookupByID(virConnectPtr conn, int id) { return (ret); error: - if (name != NULL) - free(name); + free(name); return (NULL); } @@ -3152,10 +3145,8 @@ xenDaemonCreateLinux(virConnectPtr conn, const char *xmlDesc, sexpr = virDomainParseXMLDesc(conn, xmlDesc, &name, priv->xendConfigVersion); if ((sexpr == NULL) || (name == NULL)) { virXendError(conn, VIR_ERR_XML_ERROR, "domain"); - if (sexpr != NULL) - free(sexpr); - if (name != NULL) - free(name); + free(sexpr); + free(name); return (NULL); } @@ -3187,8 +3178,7 @@ xenDaemonCreateLinux(virConnectPtr conn, const char *xmlDesc, xenDaemonDomainDestroy(dom); virUnrefDomain(dom); } - if (name != NULL) - free(name); + free(name); return (NULL); } @@ -3228,8 +3218,7 @@ xenDaemonAttachDevice(virDomainPtr domain, const char *xml) str = virDomainGetOSType(domain); if (strcmp(str, "linux")) hvm = 1; - if (str) - free(str); + free(str); sexpr = virParseXMLDevice(domain->conn, xml, hvm, priv->xendConfigVersion); if (sexpr == NULL) return (-1); @@ -3460,10 +3449,8 @@ virDomainPtr xenDaemonDomainDefineXML(virConnectPtr conn, const char *xmlDesc) { sexpr = virDomainParseXMLDesc(conn, xmlDesc, &name, priv->xendConfigVersion); if ((sexpr == NULL) || (name == NULL)) { virXendError(conn, VIR_ERR_XML_ERROR, "domain"); - if (sexpr != NULL) - free(sexpr); - if (name != NULL) - free(name); + free(sexpr); + free(name); return (NULL); } @@ -3482,8 +3469,7 @@ virDomainPtr xenDaemonDomainDefineXML(virConnectPtr conn, const char *xmlDesc) { return (dom); error: - if (name != NULL) - free(name); + free(name); return (NULL); } int xenDaemonDomainCreate(virDomainPtr domain) @@ -3558,8 +3544,7 @@ xenDaemonNumOfDefinedDomains(virConnectPtr conn) } error: - if (root != NULL) - sexpr_free(root); + sexpr_free(root); return(ret); } @@ -3591,8 +3576,7 @@ int xenDaemonListDefinedDomains(virConnectPtr conn, char **const names, int maxn } error: - if (root != NULL) - sexpr_free(root); + sexpr_free(root); return(ret); } diff --git a/src/xm_internal.c b/src/xm_internal.c index 6b502d0..a1317c4 100644 --- a/src/xm_internal.c +++ b/src/xm_internal.c @@ -1865,8 +1865,7 @@ static char *xenXMParseXMLVif(virConnectPtr conn, xmlNodePtr node, int hvm) { } cleanup: - if (bridge != NULL) - free(bridge); + free(bridge); if (mac != NULL) xmlFree(mac); if (source != NULL) @@ -2238,8 +2237,7 @@ virConfPtr xenXMParseXMLToConfig(virConnectPtr conn, const char *xml) { if (!vif) goto error; if (!(thisVif = malloc(sizeof(*thisVif)))) { - if (vif) - free(vif); + free(vif); xenXMError(conn, VIR_ERR_NO_MEMORY, "config"); goto error; } @@ -2410,8 +2408,7 @@ virDomainPtr xenXMDomainDefineXML(virConnectPtr conn, const char *xml) { return (ret); error: - if (entry) - free(entry); + free(entry); if (conf) virConfFree(conf); return (NULL); diff --git a/src/xml.c b/src/xml.c index c698889..a546002 100644 --- a/src/xml.c +++ b/src/xml.c @@ -397,14 +397,12 @@ virParseXenCpuTopology(virConnectPtr conn, virBufferPtr xml, parse_error: virXMLError(conn, VIR_ERR_XEN_CALL, _("topology syntax error"), 0); error: - if (cpuset != NULL) - free(cpuset); + free(cpuset); return (-1); memory_error: - if (cpuset != NULL) - free(cpuset); + free(cpuset); virXMLError(conn, VIR_ERR_NO_MEMORY, _("allocate buffer"), 0); return (-1); } @@ -1066,16 +1064,14 @@ virDomainParseXMLOSDescHVM(virConnectPtr conn, xmlNodePtr node, if (str != NULL && !strcmp(str, "localtime")) { virBufferAdd(buf, "(localtime 1)", 13); } - if (str) - free(str); + free(str); virBufferAdd(buf, "))", 2); return (0); error: - if (nodes) - free(nodes); + free(nodes); return (-1); } @@ -1723,8 +1719,7 @@ virDomainParseXMLDesc(virConnectPtr conn, const char *xmldesc, char **name, vcpus, xendConfigVersion); } - if (str != NULL) - free(str); + free(str); if (res != 0) goto error; @@ -1797,8 +1792,7 @@ virDomainParseXMLDesc(virConnectPtr conn, const char *xmldesc, char **name, return (buf.content); error: - if (nam != NULL) - free(nam); + free(nam); if (name != NULL) *name = NULL; if (ctxt != NULL) @@ -1807,8 +1801,7 @@ virDomainParseXMLDesc(virConnectPtr conn, const char *xmldesc, char **name, xmlFreeDoc(xml); if (pctxt != NULL) xmlFreeParserCtxt(pctxt); - if (buf.content != NULL) - free(buf.content); + free(buf.content); return (NULL); } diff --git a/src/xmlrpc.c b/src/xmlrpc.c index b433ef5..f956f0d 100644 --- a/src/xmlrpc.c +++ b/src/xmlrpc.c @@ -115,8 +115,7 @@ static xmlRpcValuePtr xmlRpcValueUnmarshalInteger(xmlNodePtr node) if (ret && value) ret->value.integer = atoi(value); - if (value) - free(value); + free(value); return ret; } @@ -131,8 +130,7 @@ static xmlRpcValuePtr xmlRpcValueUnmarshalBoolean(xmlNodePtr node) ret->value.boolean = true; else ret->value.boolean = false; - if (value) - free(value); + free(value); return ret; } @@ -143,8 +141,7 @@ static xmlRpcValuePtr xmlRpcValueUnmarshalDouble(xmlNodePtr node) if (ret && value) ret->value.real = atof(value); - if (value) - free(value); + free(value); return ret; } @@ -198,8 +195,7 @@ static xmlRpcValueDictElementPtr xmlRpcValueUnmarshalDictElement(xmlNodePtr node ret->value = xmlRpcValueUnmarshal(cur); } else { xmlRpcError(VIR_ERR_XML_ERROR, _("unexpected dict node"), 0); - if (ret->name) - free(ret->name); + free(ret->name); if (ret->value) xmlRpcValueFree(ret->value); free(ret); @@ -679,12 +675,8 @@ xmlRpcContextPtr xmlRpcContextNew(const char *uri) void xmlRpcContextFree(xmlRpcContextPtr context) { if (context) { - if (context->uri) - free(context->uri); - - if (context->faultMessage) - free(context->faultMessage); - + free(context->uri); + free(context->faultMessage); free(context); } } diff --git a/src/xs_internal.c b/src/xs_internal.c index 726af30..1dbbba6 100644 --- a/src/xs_internal.c +++ b/src/xs_internal.c @@ -635,9 +635,7 @@ xenStoreLookupByName(virConnectPtr conn, const char *name) ret->id = id; done: - if (xenddomain != NULL) free(xenddomain); - if (idlist != NULL) free(idlist); return(ret); diff --git a/tests/testutils.c b/tests/testutils.c index 1141edb..4fea6b6 100644 --- a/tests/testutils.c +++ b/tests/testutils.c @@ -83,8 +83,7 @@ virtTestRun(const char *title, int nloops, int (*body)(const void *data), const else fprintf(stderr, "%-50s ... FAILED\n", title); - if (ts) - free(ts); + free(ts); return ret; } diff --git a/tests/xencapstest.c b/tests/xencapstest.c index dd1c386..bf9ce07 100644 --- a/tests/xencapstest.c +++ b/tests/xencapstest.c @@ -62,8 +62,7 @@ static int testCompareFiles(const char *hostmachine, fail: - if (actualxml) - free(actualxml); + free(actualxml); if (fp1) fclose(fp1); if (fp2) diff --git a/tests/xmconfigtest.c b/tests/xmconfigtest.c index f49ca6c..51f4b67 100644 --- a/tests/xmconfigtest.c +++ b/tests/xmconfigtest.c @@ -153,8 +153,7 @@ static int testCompareFormatXML(const char *xmcfg_rel, const char *xml_rel, fail: if (conf) virConfFree(conf); - if (gotxml) - free(gotxml); + free(gotxml); if (conn) { conn->privateData = old_priv; -- 1.5.4.rc3.14.g44397

2 5

[Libvir] Probs migrating domain with libvirt 0.4.0
by Daniel Schwager 23 Jan '08

23 Jan '08

Hi, I try migrate a domain from xen02 to xen03-server (both fedora core-8 linux) - but it failed. Could you tell me, where a can look for more information About this failure ? [root@xen02 ~]# rpm -qa | grep libvirt libvirt-0.4.0-3.fc8 libvirt-0.4.0-3.fc8 libvirt-devel-0.4.0-3.fc8 libvirt-python-0.4.0-3.fc8 [root@xen03 log]# rpm -qa | grep libvirt libvirt-0.4.0-3.fc8 libvirt-python-0.4.0-3.fc8 ********** **** Migration with native XEN ********** [root@xen02 ~]# xm list Name ID Mem VCPUs State Time(s) Domain-0 0 512 8 r----- 1610.6 vm-home.winxp100-home.winxp100.1200950924765.2.1200950924765.4 1 250 1 -b---- 735.4 vm-home.winxp100-home.winxp100.1200951541281.2.1200951541281.4 2 250 1 -b---- 1564.2 vm-home.winxp100-home.winxp100.1200951640937.2.1200951640937.4 3 250 1 -b---- 1540.6 [root@xen02 ~]# xm migrate -l 2 xen03.domain.com [root@xen02 ~]# xm list Name ID Mem VCPUs State Time(s) Domain-0 0 512 8 r----- 1618.5 vm-home.winxp100-home.winxp100.1200950924765.2.1200950924765.4 1 250 1 -b---- 735.6 vm-home.winxp100-home.winxp100.1200951640937.2.1200951640937.4 3 250 1 -b---- 1541.1 ********** **** Check remote access (show migrated domain) ********** [root@xen02 ~]# virsh -c xen://xen03.domain.com/ list Id Name State ---------------------------------- 0 Domain-0 running 1 vm-home.winxp100-home.winxp100.1200951541281.2.1200951541281.4 no state ********** **** Migration with libvirtd ********** [root@xen02 ~]# virsh Welcome to virsh, the virtualization interactive terminal. virsh # list Id Name State ---------------------------------- 0 Domain-0 running 1 vm-home.winxp100-home.winxp100.1200950924765.2.1200950924765.4 blocked 3 vm-home.winxp100-home.winxp100.1200951640937.2.1200951640937.4 blocked virsh # migrate 3 xen://xen03.domain.com libvir: Remote error : remoteDispatchClientRequest: internal error: library function returned error but did not set virterror regards Danny ------------------------------------------------------------------- DT Netsolution GmbH - Taläckerstr. 30 - D-70437 Stuttgart Geschäftsführer: Daniel Schwager, Stefan Hörz - HRB Stuttgart 19870 Tel: +49-711-849910-32, Fax: -932 - Mailto:daniel.schwager@dtnet.de

2 3

Re: [Libvir] [PATCH] Linux-VServer support
by Daniel Hokka Zakrisson 23 Jan '08

23 Jan '08

This update has moved the interface name to /domain/devices/interface/target/@dev. > This is an XML dump from one of my guests: > <domain type='vserver' id='40010'> > <name>lenny</name> > <uuid>19e12957-261a-5a06-d6d0-89917d6d439f</uuid> > <memory>2048000</memory> > <os> > <hostname>lenny.test</hostname> > <type arch='i686'>vserver</type> > </os> > <devices> > <interface type='ethernet'> > <ip prefix='24' address='192.168.20.4' /> > <target dev='dummy0'/> > </interface> > <interface type='ethernet'> > <ip prefix='24' type='range' > address='192.168.32.100' address2='192.168.32.200'/> > <target dev='dummy0'/> > </interface> > <disk type='directory' device='directory'> > <source directory='/vservers/lenny' type='auto' options='defaults'/> <target directory='/'/> > </disk> > <disk type='directory' device='directory'> > <source directory='/srv' type='ext3' options='bind,ro'/> > <target directory='/srv'/> > </disk> > <disk type='block' device='directory'> > <source dev='/dev/mapper/test' type='ext3' options='defaults'/> <target directory='/mnt'/> > </disk> > </devices> > </domain> -- Daniel Hokka Zakrisson

1 0

[Libvir] libvirt on OS X Leopard 10.5.1
by Schley Andrew Kutz 22 Jan '08

22 Jan '08

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 I spent the weekend attempting to get libvirt working on OS X Leopard 10.5.1. I was able to get it to compile, but not connect to libvirtd running on either my KVM or Xen servers. Here are the instructions for getting it to compile: 1. Download libvirt-0.4.0 from the mirrors. 2. Use macports to install pkgconfig and gnutls 3. Configure your source: ./configure --without-xen --without-qemu 4. Replace instances of 'hyper' in qemu/remote_protocol.x with 'long' and then follow the instructions on http://libvirt.org/windows.html to regen XDR structures. 5. Edit '/usr/include/net/if.h' and add the following include: #include <net/if_var.h> #include <sys/types.h> // // EDIT: akutz // #include <sys/socket.h> 6. Create a symlink for 'malloc.h' so the libvirt source can find it: sudo ln -s /usr/include/malloc/malloc.h /usr/include/malloc.h 7. Add a header to "src/remote_internal.c": // // EDIT: akutz // #include <sys/un.h> 8. The version-script parameter of ld is not portable to OS X. Edit 'src/Makefile': # # EDIT: akutz # #libvirt_la_LDFLAGS = -Wl,--version-script=$(srcdir)/ libvirt_sym.version \ # -version-info 4:0:4 \ # $(COVERAGE_CFLAGS:-f%=-Wc,-f%) \ libvirt_la_LDFLAGS = -Wl, \ -version-info 4:0:4 \ $(COVERAGE_CFLAGS:-f%=-Wc,-f%) \ 9. Replace the distribution copy of libread.dylib with the one from Macports or else you will get errors about missing symbols (thread starts here http://www.mail-archive.com/macports-dev@lists.macosforge.org/msg00729.html) : sudo mv /usr/lib/libreadline.dylib /usr/lib/libreadline.dylib.dist sudo ln -s /opt/local/lib/libreadline.dylib /usr/lib/libreadline.dylib 10. The sources should now build and install. At this point any attempt to connect to a remote host results in the thread dying and OS X catching the exception with the following report: <beginReport> Process: Python [57356] Path: /System/Library/Frameworks/Python.framework/Versions/ 2.5/Resources/Python.app/Contents/MacOS/Python Identifier: Python Version: ??? (???) Code Type: X86 (Native) Parent Process: bash [59098] Date/Time: 2008-01-21 16:48:52.228 -0600 OS Version: Mac OS X 10.5.1 (9B18) Report Version: 6 Exception Type: EXC_BAD_ACCESS (SIGBUS) Exception Codes: KERN_PROTECTION_FAILURE at 0x0000000000000004 Crashed Thread: 0 Thread 0 Crashed: 0 libvirt.0.dylib 0x00412911 remoteAuthenticate + 1345 (remote_internal.c:3062) 1 libvirt.0.dylib 0x00414869 doRemoteOpen + 3593 (remote_internal.c:753) 2 libvirt.0.dylib 0x00415499 remoteOpen + 137 (remote_internal.c:860) 3 libvirt.0.dylib 0x00401438 do_open + 392 (libvirt.c: 579) 4 libvirtmod.so 0x000c0e06 libvirt_virConnectOpen + 102 (libvirt-py.c:1026) 5 org.python.python 0x0018d826 PyEval_EvalFrameEx + 17116 6 org.python.python 0x0018da08 PyEval_EvalFrameEx + 17598 7 org.python.python 0x0018f47b PyEval_EvalCodeEx + 1638 8 org.python.python 0x0018f568 PyEval_EvalCode + 87 9 org.python.python 0x001a6a0c PyErr_Display + 1896 10 org.python.python 0x001a7036 PyRun_FileExFlags + 135 11 org.python.python 0x001a89a2 PyRun_SimpleFileExFlags + 421 12 org.python.python 0x001b3c23 Py_Main + 3095 13 org.python.pythonapp 0x00001fca 0x1000 + 4042 Thread 0 crashed with X86 Thread State (32-bit): eax: 0x00000000 ebx: 0x004123e1 ecx: 0xbfffe826 edx: 0x00000000 edi: 0x00000000 esi: 0xbfffe92c ebp: 0xbfffea48 esp: 0xbfffe860 ss: 0x0000001f efl: 0x00010202 eip: 0x00412911 cs: 0x00000017 ds: 0x0000001f es: 0x0000001f fs: 0x00000000 gs: 0x00000037 cr2: 0x00000004 Binary Images: 0x1000 - 0x1ffe org.python.pythonapp 2.5.0 (2.5.0a0) <a2ccf04a940c23b34c33d7fe108d773e> /System/Library/Frameworks/ Python.framework/Versions/2.5/Resources/Python.app/Contents/MacOS/Python 0x49000 - 0x4bfff +libgpg-error.0.dylib ??? (???) /opt/local/ lib/libgpg-error.0.dylib 0xbb000 - 0xc2ff3 +libvirtmod.so ??? (???) <20dea38de64927c9e8b50a1fa240e067> /usr/local/lib/python2.5/site- packages/libvirtmod.so 0x118000 - 0x1e3ffb org.python.python 2.5 (2.5) <9786e5d8790a594bb7b3cdcf9a9d0b49> /System/Library/Frameworks/ Python.framework/Versions/2.5/Python 0x2f0000 - 0x2f7ff3 +libintl.8.dylib ??? (???) /opt/local/lib/ libintl.8.dylib 0x400000 - 0x424fef +libvirt.0.dylib ??? (???) <70af9029fa4c7accc04377f0f65c53ae> /usr/local/lib/libvirt.0.dylib 0x43b000 - 0x49bfff +libgnutls.26.dylib ??? (???) /opt/local/lib/ libgnutls.26.dylib 0x4b5000 - 0x4c2fe2 +libtasn1.3.dylib ??? (???) /opt/local/lib/ libtasn1.3.dylib 0x4c7000 - 0x528ff3 +libgcrypt.11.dylib ??? (???) <76bad0ad90909bf99f422f8bbfd61124> /opt/local/lib/libgcrypt.11.dylib 0x540000 - 0x637ff0 +libiconv.2.dylib ??? (???) /opt/local/lib/ libiconv.2.dylib 0x644000 - 0x654ffd +libz.1.dylib ??? (???) /opt/local/lib/libz. 1.dylib 0x65f000 - 0x661ffc apop.so ??? (???) <8e5cbfa49bbed80ed34f03e008e3e086> /usr/lib/sasl2/apop.so 0x665000 - 0x67dfe2 dhx.so ??? (???) <0831cf2893deaa2b5525ea7bfda17404> /usr/lib/sasl2/dhx.so 0x68c000 - 0x694fff digestmd5WebDAV.so ??? (???) <42e13c06e037f02eee71a43324169f62> /usr/lib/sasl2/digestmd5WebDAV.so 0x698000 - 0x69afff libanonymous.2.so ??? (???) <161902c9ed78dce78b61125c7c155f0f> /usr/lib/sasl2/libanonymous.2.so 0x69e000 - 0x6a0ffc libcrammd5.2.so ??? (???) <c917c89eefddcfcacf48c939c3af12aa> /usr/lib/sasl2/libcrammd5.2.so 0x6a4000 - 0x6adffb libdigestmd5.2.so ??? (???) <c8595204acd0e7cb362b33d008693019> /usr/lib/sasl2/libdigestmd5.2.so 0x6b1000 - 0x6b5fff libgssapiv2.2.so ??? (???) <a47ee23249e7c36aee418a6e7fd3a502> /usr/lib/sasl2/libgssapiv2.2.so 0x6bb000 - 0x6bdffc login.so ??? (???) <03d28ec908a6ed9abee1b25fe87716ef> /usr/lib/sasl2/login.so 0x6c1000 - 0x6c8ffc libotp.2.so ??? (???) <0b7c8cd165835331c586e49465ef1186> /usr/lib/sasl2/libotp.2.so 0x6d2000 - 0x6d4ffc libplain.2.so ??? (???) <5992f1149ff6cc7fadafa2bfd4ecc00a> /usr/lib/sasl2/libplain.2.so 0x6d8000 - 0x6ddffc libpps.so ??? (???) <ae02d7b23951bddb4db705b2d632c6ac> /usr/lib/sasl2/libpps.so 0x6e3000 - 0x6e6fff mschapv2.so ??? (???) <8d5951f3d3a0565fd772ebec4d2054fb> /usr/lib/sasl2/mschapv2.so 0x6ea000 - 0x6ecffc shadow_auxprop.so ??? (???) <5137115453406a92cf514b65046a6b28> /usr/lib/sasl2/shadow_auxprop.so 0x6f2000 - 0x6f4ffd smb_lm.so ??? (???) <e9ad275441e15388bf580b1cdf55b430> /usr/lib/sasl2/smb_lm.so 0x6f8000 - 0x6faffc smb_nt.so ??? (???) <a7144a88919b4aea313caf6c4e86353a> /usr/lib/sasl2/smb_nt.so 0x6fe000 - 0x701ff0 smb_ntlmv2.so ??? (???) <ccfa6d0eafa992db95ad309e32c6d400> /usr/lib/sasl2/smb_ntlmv2.so 0x8fe00000 - 0x8fe2d883 dyld 95.3 (???) <81592e798780564b5d46b988f7ee1a6a> /usr/lib/dyld 0x90d29000 - 0x90e5bfe7 com.apple.CoreFoundation 6.5 (476) <8bfebc0dbad6fc33bea0fa00a1b9ec37> /System/Library/Frameworks/ CoreFoundation.framework/Versions/A/CoreFoundation 0x90e5c000 - 0x90e7aff3 com.apple.DirectoryService.Framework 3.5 (3.5) <899d8c9ee31b004a6ff73dab88982b1a> /System/Library/Frameworks/ DirectoryService.framework/Versions/A/DirectoryService 0x922a3000 - 0x92353fff edu.mit.Kerberos 6.0.11 (6.0.11) <33c25789baedcd70a7e24881775dd9ad> /System/Library/Frameworks/ Kerberos.framework/Versions/A/Kerberos 0x9244f000 - 0x924acffb libstdc++.6.dylib ??? (???) <04b812dcec670daa8b7d2852ab14be60> /usr/lib/libstdc++.6.dylib 0x92510000 - 0x926d9fef com.apple.security 5.0.1 (32736) <8c9eda0fcc1d8a571543025ac900715f> /System/Library/Frameworks/ Security.framework/Versions/A/Security 0x92f62000 - 0x92f80fff libresolv.9.dylib ??? (???) <54e6a08c2f108bdf5916fb483d51961b> /usr/lib/libresolv.9.dylib 0x93661000 - 0x9366fffd libz.1.dylib ??? (???) <5ddd8539ae2ebfd8e7cc1c57525385c7> /usr/lib/libz.1.dylib 0x936a2000 - 0x93783ff7 libxml2.2.dylib ??? (???) <450ec38b57fb46013847cce851001a2f> /usr/lib/libxml2.2.dylib 0x93d28000 - 0x93d2ffe9 libgcc_s.1.dylib ??? (???) <f53c808e87d1184c0f9df63aef53ce0b> /usr/lib/libgcc_s.1.dylib 0x94a5b000 - 0x94b93ff7 libicucore.A.dylib ??? (???) <afcea652ff2ec36885b2c81c57d06d4c> /usr/lib/libicucore.A.dylib 0x95a7f000 - 0x95b5efff libobjc.A.dylib ??? (???) <5eda47fec2d0e7853b3506aa1fd2dafa> /usr/lib/libobjc.A.dylib 0x9631e000 - 0x963d0ffb libcrypto.0.9.7.dylib ??? (???) <330b0e48e67faffc8c22dfc069ca7a47> /usr/lib/libcrypto.0.9.7.dylib 0x9642c000 - 0x9643bfff libsasl2.2.dylib ??? (???) <b9e1ca0b6612e280b6cbea6df0eec5f6> /usr/lib/libsasl2.2.dylib 0x9643c000 - 0x96466fef libauto.dylib ??? (???) <d468bc4a8a69343f1748c293db1b57fb> /usr/lib/libauto.dylib 0x96d8c000 - 0x96d8dfef libmathCommon.A.dylib ??? (???) /usr/lib/ system/libmathCommon.A.dylib 0x96d9a000 - 0x96ef4fe3 libSystem.B.dylib ??? (???) <8ecc83dc0399be3946f7a46e88cf4bbb> /usr/lib/libSystem.B.dylib 0xfffe8000 - 0xfffebfff libobjc.A.dylib ??? (???) /usr/lib/ libobjc.A.dylib 0xffff0000 - 0xffff1780 libSystem.B.dylib ??? (???) /usr/lib/ libSystem.B.dylib </beginReport> Anyway, hopefully someone on the list can make heads or tails of why this is not working on OS X. I sure would love to be able to use libvirt instead of xenapi. Thanks! - -- - -a -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.7 (Darwin) iD8DBQFHlSG1Tg8lceyAqqQRAiD1AJ99NZC23AheQl36oGYU/mmjqILbtwCg07+i /TT0j27cGU7krDDMk+hVX/k= =P+Cg -----END PGP SIGNATURE-----

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[Libvir] a vmware driver
by Schley Andrew Kutz 22 Jan '08

22 Jan '08

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Does anyone know if there is work being done on a VMware driver? If not, I could write one. I'm about to release an application via SearchServerVirtualization called ivi (Java Virtual Interface) that uses the VI SDK and the XenApi (cannot get libvirt to work on my dev platform - OS X) to enable management of both VMware VI3 boxes as well as Xen boxes. I would love to move away from the XenApi to libvirt, and even more so to extend libvirt to support the VI SDK. - -- - -a -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.7 (Darwin) iD8DBQFHlhhqTg8lceyAqqQRAlaQAKCCjfrmKMAZyXlEQUVKh9uF/OoTHwCgkpSm dPni/xjrHwSMrDvPmAkgidA= =QfY7 -----END PGP SIGNATURE-----

3 4

Re: [Libvir] libvirt on OS X Leopard 10.5.1
by Richard W.M. Jones 22 Jan '08

22 Jan '08

Schley Andrew Kutz wrote: > -----BEGIN PGP SIGNED MESSAGE----- > Hash: SHA1 > >> Probably the simplest is to compile the RPC bindings which are >> generated on Linux and supplied with libvirt in CVS and the tarball >> (ie. remote_protocol.[ch]). We need to supply only the xdr_quad type >> and a handful of 64 bit functions. I did the same thing for Windows >> but in that case built my own version of a mini-XDR library with some >> contributions from glibc. What we could do is bundle this mini-XDR >> library with libvirt itself (or perhaps persuade gnulib to take it -- >> Jim?). > > I would try this, but as you can see from the thread, I've hit a wall > running the autogen script in Linux. It cannot find a devhelp file... Try Jim's suggestion. As for an XDR library replacement, take a look at my hacked-togther XDR replacement. I have no idea if it'll work on Mac OS X, but worth a try: http://www.annexia.org/tmp/xdr-4.0-mingw5.tar.gz Rich. -- Emerging Technologies, Red Hat - http://et.redhat.com/~rjones/ Registered Address: Red Hat UK Ltd, Amberley Place, 107-111 Peascod Street, Windsor, Berkshire, SL4 1TE, United Kingdom. Registered in England and Wales under Company Registration No. 03798903

1 0

[Libvir] Libvirt windows compilation errors
by Gabriel Kaufmann 22 Jan '08

22 Jan '08

Hi, I downloaded libvirt-0.4.0 sources and patched it with libvirt-windows-20071129-2.patch. I followed all the instructions from http://libvirt.org/windows.html and experienced some compilation problems which Caused me to make the following changes. 1- For some reason Cygwin does not configure correctly the winsock2 usage, so after running the configure I had to go to the config.h file and manually comment out the HAVE_WINSOCK2 macro declaration. 2- On file src/remote_internal.c : 1- Rename gnutls_cipher_algorithm_t to gnutls_cipher_algorithm 2- Add #include <sys/un.h> 3- On file qemud/qemud.c : 4- Remove include : #include "getaddrinfo.h" (It was conflicting the include from ../src/getaddrinfo.h ) 5- On file src/remote.c : 1- Rename gnutls_cipher_algorithm_t to gnutls_cipher_algorithm 2- Add #include "../src/getaddrinfo.h" 6- On tests folder added -lintl flag to the LIBS variable Best Regards, Gabriel Kaufmann Software Engineer Gabriel.Kaufmann(a)ericom.com<mailto:Gabriel.Kaufmann@ericom.com> Ericom Software Tel (Dir): +972 2 591 1700 Ext 754 Tel (Main): +972 2 591 1700 http://www.ericom.com Access Done Right Empower Enterprise-Wide Access to Microsoft(r) Terminal Server, Virtual Desktops and Legacy Applications

2 1

[Libvir] unnecessary "if-before-free" tests
by Jim Meyering 21 Jan '08

21 Jan '08

Hi Dan, I noticed a few new unnecessary "if-before-free" tests: src/storage_backend.c:2591: if (groups[j]) free(groups[j]); src/storage_backend_iscsi.c: if (devpath) free(devpath); src/storage_backend_iscsi.c: if (portal) free(portal); src/storage_backend_iscsi.c: if (session) free(session); FYI, this finds all the one-liners: git grep -E 'if $([^)]+)$ free *$\1$' I had to think harder to get the 2-line occurrences: perl -0ne '/\b(if $([^)]+)$\s+free *$\2$)/sgm and print "$ARGV:$.: $1\n"'\ $(git ls-files) or rather this, if you don't have a git repo handy: perl -0ne '/\b(if $([^)]+)$\s+free *$\2$)/sgm and print "$ARGV:$.: $1\n"'\ {src,tests,qemud,proxy}/*.[ch] If no one objects, I'm going to remove them and add a build-time test to ensure they stay gone. ------------------ gnulib/lib/getaddrinfo.c:2257: if (cur->ai_canonname) free (cur->ai_canonname) gnulib/lib/printf-parse.c:2277: if (a->arg) free (a->arg) proxy/libvirt_proxy.c:2499: if (name) free(name) qemud/qemud.c:2529: if (client->saslUsername) free(client->saslUsername) src/buf.c:2549: if (buf->content) free(buf->content) src/conf.c:2551: if (tmp->comment) free(tmp->comment) src/hash.c:2559: if (iter->name) free(iter->name) src/iptables.c:2562: if (rule->rule) free(rule->rule) src/libvirt.c:2566: if (ret->name) free (ret->name) src/openvz_conf.c:2570: if (prop) free(prop) src/qemu_conf.c:2578: if (prop) free(prop) src/qemu_driver.c:2580: if (base) free (base) src/remote_internal.c:2584: if (name) free (name) src/storage_backend.c:2591: if (groups[j]) free(groups[j]) src/storage_backend_iscsi.c:2597: if (devpath) free(devpath) src/storage_conf.c:2605: if (def->name) free(def->name) src/storage_driver.c:2607: if (base) free (base) src/test.c:2609: if (name) free(name) src/virsh.c:2615: if (ctl->name) free(ctl->name) src/xen_internal.c:2617: if (new) free(new) src/xend_internal.c:2621: if (drvName) free(drvName) src/xm_internal.c:2623: if (vif) free(vif) src/xml.c:2625: if (str) free(str) src/xmlrpc.c:2627: if (value) free(value) tests/testutils.c:2739: if (ts) free(ts) tests/xencapstest.c:2784: if (actualxml) free(actualxml) tests/xmconfigtest.c:2804: if (gotxml) free(gotxml)

2 1

[Libvir] Repository for work-in-progress storage patches
by Daniel P. Berrange 21 Jan '08

21 Jan '08

Jim suggested that it might be useful for me to make a repository available with my work-in-progress storage patches even if they're not ready to merge just yet. I work using a mercurial patch queue, which is basically a mercurial native version of quilt. The master HG repository is an automated sync of CVS -> HG: http://hg.berrange.com/libraries/libvirt--devel The patch queue which applies ontop of this repo is: http://hg.berrange.com/libraries/libvirt--storage To use this you would try the following 1. Make sure the 'mg' extension is enabled in $HOME/.hgrc. You should have: $ cat $HOME/.hgrc [extensions] hgext.mq= 2. Clone both repos in one go: hg qclone -p http://hg.berrange.com/libraries/libvirt--storage \ http://hg.berrange.com/libraries/libvirt--devel 3. The local 'libvirt-storage' directory now contains the master repo, along with an embedded patch queue. You can view the patch queue: $ hg qseries ignore-rules misc-connection-hash misc-libvirt-debug misc-virsh-read-all misc-default-uri job-api job-virsh job-test-thread-safety job-test-driver storage-public-api storage-driver-api storage-remote-protocol storage-remote-driver storage-virsh storage-virsh-args storage-driver storage-examples storage-backend-helpers storage-backend-fs storage-backend-loop storage-backend-lvm storage-backend-iscsi storage-backend-disk storage-python-api misc-python-generator 4. And you can apply / remove patches to/from the working directory with the 'hg qpush' and 'hg qpop' commands. 'hg qdiff' will show contents of the patches $ hg qpush applying ignore-rules Now at: ignore-rules $ hg qpush applying misc-connection-hash Now at: misc-connection-hash ....etc When I've tidying up a few loose ends in the next few days I'll post the current series with proper descriptions of each patch 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 -=|

4 30

[Libvir] [PATCH] Avoid "may be used uninitialized" warning.
by Jim Meyering 21 Jan '08

21 Jan '08

I've been seeing this on rawhide for a few days: xmconfigtest.c:115: warning: 'old_priv' may be used uninitialized in this function Here's a fix: Avoid "may be used uninitialized" warning. * tests/xmconfigtest.c (testCompareParseXML): Initialize "old_priv". Signed-off-by: Jim Meyering <meyering(a)redhat.com> --- tests/xmconfigtest.c | 2 +- 1 files changed, 1 insertions(+), 1 deletions(-) diff --git a/tests/xmconfigtest.c b/tests/xmconfigtest.c index d66b660..f49ca6c 100644 --- a/tests/xmconfigtest.c +++ b/tests/xmconfigtest.c @@ -51,7 +51,7 @@ static int testCompareParseXML(const char *xmcfg_rel, const char *xml_rel, int ret = -1; virConnectPtr conn; int wrote = MAX_FILE; - void *old_priv; + void *old_priv = NULL; struct _xenUnifiedPrivate priv; char xmcfg[PATH_MAX]; char xml[PATH_MAX]; -- 1.5.4.rc4.1.g1895

2 1

[Libvir] PATCH: Cleanup generator & force build fail on missing APIs
by Daniel P. Berrange 21 Jan '08

21 Jan '08

The python generator will happily ignore functions it can't handle and pretend everything completed without error. This leads to the situation where we add new APis to C library and no one ever notices that they are missing from the python until months later. This requires that my previous patch be applied first to implement the missing APIs we already have :-) This patch causes the generator to return a non-zero exit status if there are any APIs marked as FAILED. It will also explicitly print out their names so its clear what is missing. In doing this I added a bunch more functions to the skip list - ones that we already manually wrote. It also removes the manually written virCloseConnect/virDomainFree/ virNetworkFree C code, since the generated code is just fine. Finally, it makes all manually written C functions static for consistency generator.py | 50 ++++++++++++++++++++++------------ libvir.c | 85 ++++++----------------------------------------------------- 2 files changed, 43 insertions(+), 92 deletions(-) Dan. diff -r 842dc0869c87 python/generator.py --- a/python/generator.py Sat Jan 19 14:54:24 2008 -0500 +++ b/python/generator.py Sat Jan 19 14:58:50 2008 -0500 @@ -212,7 +212,7 @@ skipped_modules = { } skipped_types = { - 'int *': "usually a return type", +# 'int *': "usually a return type", } ####################################################################### @@ -277,6 +277,8 @@ skip_impl = ( 'virDomainLookupByUUID', 'virNetworkGetUUID', 'virNetworkLookupByUUID', + 'virDomainGetAutostart', + 'virNetworkGetAutostart', 'virDomainBlockStats', 'virDomainInterfaceStats', 'virNodeGetCellsFreeMemory', @@ -287,18 +289,23 @@ skip_impl = ( 'virDomainPinVcpu', ) -def skip_function(name): - if name == "virConnectClose": - return 1 - if name == "virDomainFree": - return 1 - if name == "virNetworkFree": - return 1 - if name == "vshRunConsole": - return 1 - if name == "virGetVersion": - return 1 - return 0 + +# These are functions which the generator skips completly - no python +# or C code is generated. Generally should not be used for any more +# functions than those already listed +skip_function = ( + 'virConnectListDomains', # Python API is called virConectListDomainsID for unknown reasons + 'virConnSetErrorFunc', # Not used in Python API XXX is this a bug ? + 'virResetError', # Not used in Python API XXX is this a bug ? + 'virConnectGetVersion', # Not used in Python API XXX is this a bug ? + 'virGetVersion', # Python C code is manually written + 'virSetErrorFunc', # Python API is called virRegisterErrorHandler for unknown reasons + 'virConnCopyLastError', # Python API is called virConnGetLastError instead + 'virCopyLastError', # Python API is called virGetLastError instead + 'virConnectOpenAuth', # Python C code is manually written + 'virDefaultErrorFunc', # Python virErrorFuncHandler impl calls this from C +) + def print_function_wrapper(name, output, export, include): global py_types @@ -314,7 +321,7 @@ def print_function_wrapper(name, output, if skipped_modules.has_key(file): return 0 - if skip_function(name) == 1: + if name in skip_function: return 0 if name in skip_impl: # Don't delete the function entry in the caller. @@ -527,12 +534,19 @@ def buildStubs(): export.close() wrapper.close() - print "Generated %d wrapper functions, %d failed, %d skipped\n" % (nb_wrap, - failed, skipped); + print "Generated %d wrapper functions" % nb_wrap + print "Missing type converters: " for type in unknown_types.keys(): print "%s:%d " % (type, len(unknown_types[type])), print + + for f in functions_failed: + print "ERROR: failed %s" % f + + if failed > 0: + return -1 + return 0 ####################################################################### # @@ -1130,5 +1144,7 @@ def buildWrappers(): txt.close() classes.close() -buildStubs() +if buildStubs() < 0: + sys.exit(1) buildWrappers() +sys.exit(0) diff -r 842dc0869c87 python/libvir.c --- a/python/libvir.c Sat Jan 19 14:54:24 2008 -0500 +++ b/python/libvir.c Sat Jan 19 14:58:50 2008 -0500 @@ -23,14 +23,6 @@ extern void initcygvirtmod(void); extern void initcygvirtmod(void); #endif -PyObject *libvirt_virDomainGetUUID(PyObject *self ATTRIBUTE_UNUSED, PyObject *args); -PyObject *libvirt_virNetworkGetUUID(PyObject *self ATTRIBUTE_UNUSED, PyObject *args); -PyObject *libvirt_virGetLastError(PyObject *self ATTRIBUTE_UNUSED, PyObject *args); -PyObject *libvirt_virConnGetLastError(PyObject *self ATTRIBUTE_UNUSED, PyObject *args); -PyObject * libvirt_virDomainBlockStats(PyObject *self ATTRIBUTE_UNUSED, PyObject *args); -PyObject * libvirt_virDomainInterfaceStats(PyObject *self ATTRIBUTE_UNUSED, PyObject *args); -PyObject * libvirt_virNodeGetCellsFreeMemory(PyObject *self ATTRIBUTE_UNUSED, PyObject *args); - /* The two-statement sequence "Py_INCREF(Py_None); return Py_None;" is so common that we encapsulate it here. Now, each use is simply return VIR_PY_NONE; */ @@ -42,7 +34,7 @@ PyObject * libvirt_virNodeGetCellsFreeMe * * ************************************************************************/ -PyObject * +static PyObject * libvirt_virDomainBlockStats(PyObject *self ATTRIBUTE_UNUSED, PyObject *args) { virDomainPtr domain; PyObject *pyobj_domain; @@ -71,7 +63,7 @@ libvirt_virDomainBlockStats(PyObject *se return(info); } -PyObject * +static PyObject * libvirt_virDomainInterfaceStats(PyObject *self ATTRIBUTE_UNUSED, PyObject *args) { virDomainPtr domain; PyObject *pyobj_domain; @@ -422,7 +414,7 @@ static PyObject *libvirt_virPythonErrorF static PyObject *libvirt_virPythonErrorFuncHandler = NULL; static PyObject *libvirt_virPythonErrorFuncCtxt = NULL; -PyObject * +static PyObject * libvirt_virGetLastError(PyObject *self ATTRIBUTE_UNUSED, PyObject *args ATTRIBUTE_UNUSED) { virError err; @@ -446,7 +438,7 @@ libvirt_virGetLastError(PyObject *self A return info; } -PyObject * +static PyObject * libvirt_virConnGetLastError(PyObject *self ATTRIBUTE_UNUSED, PyObject *args) { virError err; @@ -714,41 +706,6 @@ libvirt_virGetVersion (PyObject *self AT return Py_BuildValue ((char *) "kk", libVer, typeVer); } -static PyObject * -libvirt_virDomainFree(PyObject *self ATTRIBUTE_UNUSED, PyObject *args) { - PyObject *py_retval; - int c_retval; - virDomainPtr domain; - PyObject *pyobj_domain; - - if (!PyArg_ParseTuple(args, (char *)"O:virDomainFree", &pyobj_domain)) - return(NULL); - domain = (virDomainPtr) PyvirDomain_Get(pyobj_domain); - - LIBVIRT_BEGIN_ALLOW_THREADS; - c_retval = virDomainFree(domain); - LIBVIRT_END_ALLOW_THREADS; - py_retval = libvirt_intWrap((int) c_retval); - return(py_retval); -} - -static PyObject * -libvirt_virConnectClose(PyObject *self ATTRIBUTE_UNUSED, PyObject *args) { - PyObject *py_retval; - int c_retval; - virConnectPtr conn; - PyObject *pyobj_conn; - - if (!PyArg_ParseTuple(args, (char *)"O:virConnectClose", &pyobj_conn)) - return(NULL); - conn = (virConnectPtr) PyvirConnect_Get(pyobj_conn); - - LIBVIRT_BEGIN_ALLOW_THREADS; - c_retval = virConnectClose(conn); - LIBVIRT_END_ALLOW_THREADS; - py_retval = libvirt_intWrap((int) c_retval); - return(py_retval); -} static PyObject * libvirt_virConnectListDomainsID(PyObject *self ATTRIBUTE_UNUSED, @@ -872,7 +829,7 @@ libvirt_virNodeGetInfo(PyObject *self AT return(py_retval); } -PyObject * +static PyObject * libvirt_virDomainGetUUID(PyObject *self ATTRIBUTE_UNUSED, PyObject *args) { PyObject *py_retval; unsigned char uuid[VIR_UUID_BUFLEN]; @@ -917,25 +874,6 @@ libvirt_virDomainLookupByUUID(PyObject * c_retval = virDomainLookupByUUID(conn, uuid); LIBVIRT_END_ALLOW_THREADS; py_retval = libvirt_virDomainPtrWrap((virDomainPtr) c_retval); - return(py_retval); -} - - -static PyObject * -libvirt_virNetworkFree(PyObject *self ATTRIBUTE_UNUSED, PyObject *args) { - PyObject *py_retval; - int c_retval; - virNetworkPtr domain; - PyObject *pyobj_domain; - - if (!PyArg_ParseTuple(args, (char *)"O:virNetworkFree", &pyobj_domain)) - return(NULL); - domain = (virNetworkPtr) PyvirNetwork_Get(pyobj_domain); - - LIBVIRT_BEGIN_ALLOW_THREADS; - c_retval = virNetworkFree(domain); - LIBVIRT_END_ALLOW_THREADS; - py_retval = libvirt_intWrap((int) c_retval); return(py_retval); } @@ -1024,7 +962,7 @@ libvirt_virConnectListDefinedNetworks(Py } -PyObject * +static PyObject * libvirt_virNetworkGetUUID(PyObject *self ATTRIBUTE_UNUSED, PyObject *args) { PyObject *py_retval; unsigned char uuid[VIR_UUID_BUFLEN]; @@ -1073,7 +1011,7 @@ libvirt_virNetworkLookupByUUID(PyObject } -PyObject * +static PyObject * libvirt_virDomainGetAutostart(PyObject *self ATTRIBUTE_UNUSED, PyObject *args) { PyObject *py_retval; int c_retval, autostart; @@ -1096,7 +1034,7 @@ libvirt_virDomainGetAutostart(PyObject * } -PyObject * +static PyObject * libvirt_virNetworkGetAutostart(PyObject *self ATTRIBUTE_UNUSED, PyObject *args) { PyObject *py_retval; int c_retval, autostart; @@ -1118,8 +1056,8 @@ libvirt_virNetworkGetAutostart(PyObject return(py_retval); } -PyObject * libvirt_virNodeGetCellsFreeMemory(PyObject *self ATTRIBUTE_UNUSED, - PyObject *args) +static PyObject * +libvirt_virNodeGetCellsFreeMemory(PyObject *self ATTRIBUTE_UNUSED, PyObject *args) { PyObject *py_retval; PyObject *pyobj_conn; @@ -1165,9 +1103,7 @@ static PyMethodDef libvirtMethods[] = { static PyMethodDef libvirtMethods[] = { #include "libvirt-export.c" {(char *) "virGetVersion", libvirt_virGetVersion, METH_VARARGS, NULL}, - {(char *) "virDomainFree", libvirt_virDomainFree, METH_VARARGS, NULL}, {(char *) "virConnectOpenAuth", libvirt_virConnectOpenAuth, METH_VARARGS, NULL}, - {(char *) "virConnectClose", libvirt_virConnectClose, METH_VARARGS, NULL}, {(char *) "virConnectListDomainsID", libvirt_virConnectListDomainsID, METH_VARARGS, NULL}, {(char *) "virConnectListDefinedDomains", libvirt_virConnectListDefinedDomains, METH_VARARGS, NULL}, {(char *) "virDomainGetInfo", libvirt_virDomainGetInfo, METH_VARARGS, NULL}, @@ -1177,7 +1113,6 @@ static PyMethodDef libvirtMethods[] = { {(char *) "virRegisterErrorHandler", libvirt_virRegisterErrorHandler, METH_VARARGS, NULL}, {(char *) "virGetLastError", libvirt_virGetLastError, METH_VARARGS, NULL}, {(char *) "virConnGetLastError", libvirt_virConnGetLastError, METH_VARARGS, NULL}, - {(char *) "virNetworkFree", libvirt_virNetworkFree, METH_VARARGS, NULL}, {(char *) "virConnectListNetworks", libvirt_virConnectListNetworks, METH_VARARGS, NULL}, {(char *) "virConnectListDefinedNetworks", libvirt_virConnectListDefinedNetworks, METH_VARARGS, NULL}, {(char *) "virNetworkGetUUID", libvirt_virNetworkGetUUID, METH_VARARGS, NULL}, -- |=- 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 -=|

3 5

[Libvir] PATCH: Add missing APIs to python binding
by Daniel P. Berrange 21 Jan '08

21 Jan '08

The python binding is missing all the APIs relating to CPU pinning and schedular parameters because they are too hard for the generator to manage. This patch implements them manually. Now a few words about the impls since they are non-trivial * virDomainGetSchedulerType The C binding has a return value, and an out parameter. I translated this into a tuple in python (schedular-type, n-parms) eg print dom.schedulerType() ('credit', 2) Arguably we could drop the nparams field - its less use in python since you don't have to pre-allocate a virSchedParam list. * virDomainGetSchedulerParameters This has an out parameter which is a list of virSchedParam structs, and a param specifying the length of the passed in virSchedParam list. The latter is irrelevant; The former I translated into a hash table return value eg print dom.schedulerParameters() {'cap': 0, 'weight': 100} * virDomainSetSchedulerParameters This has two in parameters, a list of virSchedParma structs, and a param specifying length of the list. I just convert this into a hash. I also make all the fields optional - it'll copy existing values for any params which are omimtted. eg dom.setSchedulerParameters({'weight': 100}) * virDomainGetVcpus This has two out parameters, a list of virVcpuInfo structs, and a bitmap both pre-allocated, and their size passed in. This needs to be turned into a 2 element tuple return value. First element returning vcpu info, and the second element returning mapping. The vcpu info will be returned as a list of lists, and the cpumap will be another list of lists - a True indicating affinity. eg (cpuinfo, cpumap) = dom.vcpus() print cpuinfo print cpumap [(0, 2, 7753916026L, 1), (1, 2, 5698028782L, 0), (2, 2, 4916522979L, 0), (3, 2, 3773416711L, 1)] [(False, True), (True, True), (True, False), (True, True)] * virDomainPinVcpu This takes a vcpu number and a bitmap of affinity. I turn the bitmap into a list of True/False values eg dom.pinVcpu(1, (True, True)) The generator fails on the C code part of the bindings completely, so that is hand-written. It also fails on the python part of the bindings, but the way the generator is structured doesn't enable us to hand-write the python part for methods within objects :-( So I have basically just editted the generator to blacklist all the out-parameters, and blacklist the in parameters which specify list lengths. Here is the code I used to test the functions: #!/usr/bin/python import libvirt con = libvirt.open("xen:///") dom = con.lookupByName("rhel5pv") dominfo = dom.info() nodeinfo = con.getInfo() pcpus = nodeinfo[4] * nodeinfo[5] * nodeinfo[6] * nodeinfo[7] (cpuinfo, cpumap) = dom.vcpus() print cpuinfo print cpumap for i in range(dominfo[3]): print "vcpu: %d" % i if cpuinfo[i][1] == 0: print "state: offline" elif cpuinfo[i][1] == 2: print "state: blocked" else: print "state: running" print "cputime: %d" % cpuinfo[i][2] print "pcpu: %d" % cpuinfo[i][3] affinity = "" for p in range(pcpus): if cpumap[i][p] == True: affinity = affinity + "y" else: affinity = affinity + "-" print "affinity: %s" % affinity print dom.pinVcpu(1, (True, True)) print dom.schedulerType() print dom.schedulerParameters() dom.setSchedulerParameters({"weight": 100}) And here is the diffstat: generator.py | 26 ++++ libvir.c | 318 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 2 files changed, 344 insertions(+) Dan. diff -r 8468c0d428c9 python/generator.py --- a/python/generator.py Sun Jan 20 12:06:47 2008 -0500 +++ b/python/generator.py Sun Jan 20 12:07:59 2008 -0500 @@ -229,6 +229,7 @@ py_types = { 'double': ('d', None, "double", "double"), 'unsigned int': ('i', None, "int", "int"), 'unsigned long': ('l', None, "long", "long"), + 'unsigned long long': ('l', None, "longlong", "long long"), 'unsigned char *': ('z', None, "charPtr", "char *"), 'char *': ('z', None, "charPtr", "char *"), 'const char *': ('z', None, "charPtrConst", "const char *"), @@ -279,6 +280,11 @@ skip_impl = ( 'virDomainBlockStats', 'virDomainInterfaceStats', 'virNodeGetCellsFreeMemory', + 'virDomainGetSchedulerType', + 'virDomainGetSchedulerParameters', + 'virDomainSetSchedulerParameters', + 'virDomainGetVcpus', + 'virDomainPinVcpu', ) def skip_function(name): @@ -918,6 +924,16 @@ def buildWrappers(): txt.write(" %s()\n" % func); n = 0 for arg in args: + if name == "virDomainPinVcpu" and arg[0] == "maplen": + continue + if name == "virDomainGetSchedulerType" and arg[0] == "nparams": + continue + if name == "virDomainSetSchedulerParameters" and arg[0] == "nparams": + continue + if name == "virDomainGetSchedulerParameters" and arg[0] != "domain": + continue + if name == "virDomainGetVcpus" and arg[0] != "domain": + continue if n != index: classes.write(", %s" % arg[0]) n = n + 1 @@ -939,6 +955,16 @@ def buildWrappers(): classes.write("libvirtmod.%s(" % name) n = 0 for arg in args: + if name == "virDomainPinVcpu" and arg[0] == "maplen": + continue + if name == "virDomainGetSchedulerType" and arg[0] == "nparams": + continue + if name == "virDomainSetSchedulerParameters" and arg[0] == "nparams": + continue + if name == "virDomainGetSchedulerParameters" and arg[0] != "domain": + continue + if name == "virDomainGetVcpus" and arg[0] != "domain": + continue if n != 0: classes.write(", "); if n != index: diff -r 8468c0d428c9 python/libvir.c --- a/python/libvir.c Sun Jan 20 12:06:47 2008 -0500 +++ b/python/libvir.c Sun Jan 20 12:07:59 2008 -0500 @@ -102,6 +102,319 @@ libvirt_virDomainInterfaceStats(PyObject PyTuple_SetItem(info, 7, PyLong_FromLongLong(stats.tx_drop)); return(info); } + + +static PyObject * +libvirt_virDomainGetSchedulerType(PyObject *self ATTRIBUTE_UNUSED, + PyObject *args) { + virDomainPtr domain; + PyObject *pyobj_domain, *info; + char *c_retval; + int nparams; + + if (!PyArg_ParseTuple(args, (char *)"O:virDomainGetScedulerType", + &pyobj_domain)) + return(NULL); + domain = (virDomainPtr) PyvirDomain_Get(pyobj_domain); + + c_retval = virDomainGetSchedulerType(domain, &nparams); + if (c_retval == NULL) + return VIR_PY_NONE; + + /* convert to a Python tupple of long objects */ + if ((info = PyTuple_New(2)) == NULL) { + free(c_retval); + return VIR_PY_NONE; + } + + PyTuple_SetItem(info, 0, libvirt_constcharPtrWrap(c_retval)); + PyTuple_SetItem(info, 1, PyInt_FromLong((long)nparams)); + free(c_retval); + return(info); +} + +static PyObject * +libvirt_virDomainGetSchedulerParameters(PyObject *self ATTRIBUTE_UNUSED, + PyObject *args) { + virDomainPtr domain; + PyObject *pyobj_domain, *info; + char *c_retval; + int nparams, i; + virSchedParameterPtr params; + + if (!PyArg_ParseTuple(args, (char *)"O:virDomainGetScedulerParameters", + &pyobj_domain)) + return(NULL); + domain = (virDomainPtr) PyvirDomain_Get(pyobj_domain); + + c_retval = virDomainGetSchedulerType(domain, &nparams); + if (c_retval == NULL) + return VIR_PY_NONE; + free(c_retval); + + if ((params = malloc(sizeof(*params)*nparams)) == NULL) + return VIR_PY_NONE; + + if (virDomainGetSchedulerParameters(domain, params, &nparams) < 0) { + free(params); + return VIR_PY_NONE; + } + + /* convert to a Python tupple of long objects */ + if ((info = PyDict_New()) == NULL) { + free(params); + return VIR_PY_NONE; + } + for (i = 0 ; i < nparams ; i++) { + PyObject *key, *val; + + switch (params[i].type) { + case VIR_DOMAIN_SCHED_FIELD_INT: + val = PyInt_FromLong((long)params[i].value.i); + break; + + case VIR_DOMAIN_SCHED_FIELD_UINT: + val = PyInt_FromLong((long)params[i].value.ui); + break; + + case VIR_DOMAIN_SCHED_FIELD_LLONG: + val = PyLong_FromLongLong((long long)params[i].value.l); + break; + + case VIR_DOMAIN_SCHED_FIELD_ULLONG: + val = PyLong_FromLongLong((long long)params[i].value.ul); + break; + + case VIR_DOMAIN_SCHED_FIELD_DOUBLE: + val = PyFloat_FromDouble((double)params[i].value.d); + break; + + case VIR_DOMAIN_SCHED_FIELD_BOOLEAN: + val = PyBool_FromLong((long)params[i].value.b); + break; + + default: + free(params); + Py_DECREF(info); + return VIR_PY_NONE; + } + + key = libvirt_constcharPtrWrap(params[i].field); + PyDict_SetItem(info, key, val); + } + free(params); + return(info); +} + +static PyObject * +libvirt_virDomainSetSchedulerParameters(PyObject *self ATTRIBUTE_UNUSED, + PyObject *args) { + virDomainPtr domain; + PyObject *pyobj_domain, *info; + char *c_retval; + int nparams, i; + virSchedParameterPtr params; + + if (!PyArg_ParseTuple(args, (char *)"OO:virDomainSetScedulerParameters", + &pyobj_domain, &info)) + return(NULL); + domain = (virDomainPtr) PyvirDomain_Get(pyobj_domain); + + c_retval = virDomainGetSchedulerType(domain, &nparams); + if (c_retval == NULL) + return VIR_PY_NONE; + free(c_retval); + + if ((params = malloc(sizeof(*params)*nparams)) == NULL) + return VIR_PY_NONE; + + if (virDomainGetSchedulerParameters(domain, params, &nparams) < 0) { + free(params); + return VIR_PY_NONE; + } + + /* convert to a Python tupple of long objects */ + for (i = 0 ; i < nparams ; i++) { + PyObject *key, *val; + key = libvirt_constcharPtrWrap(params[i].field); + val = PyDict_GetItem(info, key); + Py_DECREF(key); + + if (val == NULL) + continue; + + switch (params[i].type) { + case VIR_DOMAIN_SCHED_FIELD_INT: + params[i].value.i = (int)PyInt_AS_LONG(val); + break; + + case VIR_DOMAIN_SCHED_FIELD_UINT: + params[i].value.ui = (unsigned int)PyInt_AS_LONG(val); + break; + + case VIR_DOMAIN_SCHED_FIELD_LLONG: + params[i].value.l = (long long)PyLong_AsLongLong(val); + break; + + case VIR_DOMAIN_SCHED_FIELD_ULLONG: + params[i].value.ul = (unsigned long long)PyLong_AsLongLong(val); + break; + + case VIR_DOMAIN_SCHED_FIELD_DOUBLE: + params[i].value.d = (double)PyFloat_AsDouble(val); + break; + + case VIR_DOMAIN_SCHED_FIELD_BOOLEAN: + { + /* Hack - Python's definition of Py_True breaks strict + * aliasing rules, so can't directly compare :-( + */ + PyObject *hacktrue = PyBool_FromLong(1); + params[i].value.b = hacktrue == val ? 1 : 0; + Py_DECREF(hacktrue); + } + break; + + default: + free(params); + return VIR_PY_NONE; + } + } + + if (virDomainSetSchedulerParameters(domain, params, nparams) < 0) { + free(params); + return VIR_PY_NONE; + } + + free(params); + return VIR_PY_NONE; +} + +static PyObject * +libvirt_virDomainGetVcpus(PyObject *self ATTRIBUTE_UNUSED, + PyObject *args) { + virDomainPtr domain; + PyObject *pyobj_domain, *pyretval = NULL, *pycpuinfo = NULL, *pycpumap = NULL; + virNodeInfo nodeinfo; + virDomainInfo dominfo; + virVcpuInfoPtr cpuinfo = NULL; + unsigned char *cpumap = NULL; + int cpumaplen, i; + + if (!PyArg_ParseTuple(args, (char *)"O:virDomainGetVcpus", + &pyobj_domain)) + return(NULL); + domain = (virDomainPtr) PyvirDomain_Get(pyobj_domain); + + if (virNodeGetInfo(virDomainGetConnect(domain), &nodeinfo) != 0) + return VIR_PY_NONE; + + if (virDomainGetInfo(domain, &dominfo) != 0) + return VIR_PY_NONE; + + if ((cpuinfo = malloc(sizeof(*cpuinfo)*dominfo.nrVirtCpu)) == NULL) + return VIR_PY_NONE; + + cpumaplen = VIR_CPU_MAPLEN(VIR_NODEINFO_MAXCPUS(nodeinfo)); + if ((cpumap = malloc(dominfo.nrVirtCpu * cpumaplen)) == NULL) + goto cleanup; + + if (virDomainGetVcpus(domain, + cpuinfo, dominfo.nrVirtCpu, + cpumap, cpumaplen) < 0) + goto cleanup; + + /* convert to a Python tupple of long objects */ + if ((pyretval = PyTuple_New(2)) == NULL) + goto cleanup; + if ((pycpuinfo = PyList_New(dominfo.nrVirtCpu)) == NULL) + goto cleanup; + if ((pycpumap = PyList_New(dominfo.nrVirtCpu)) == NULL) + goto cleanup; + + for (i = 0 ; i < dominfo.nrVirtCpu ; i++) { + PyObject *info = PyTuple_New(4); + if (info == NULL) + goto cleanup; + PyTuple_SetItem(info, 0, PyInt_FromLong((long)cpuinfo[i].number)); + PyTuple_SetItem(info, 1, PyInt_FromLong((long)cpuinfo[i].state)); + PyTuple_SetItem(info, 2, PyLong_FromLongLong((long long)cpuinfo[i].cpuTime)); + PyTuple_SetItem(info, 3, PyInt_FromLong((long)cpuinfo[i].cpu)); + PyList_SetItem(pycpuinfo, i, info); + } + for (i = 0 ; i < dominfo.nrVirtCpu ; i++) { + PyObject *info = PyTuple_New(VIR_NODEINFO_MAXCPUS(nodeinfo)); + int j; + if (info == NULL) + goto cleanup; + for (j = 0 ; j < VIR_NODEINFO_MAXCPUS(nodeinfo) ; j++) { + PyTuple_SetItem(info, j, PyBool_FromLong(VIR_CPU_USABLE(cpumap, cpumaplen, i, j))); + } + PyList_SetItem(pycpumap, i, info); + } + PyTuple_SetItem(pyretval, 0, pycpuinfo); + PyTuple_SetItem(pyretval, 1, pycpumap); + + free(cpuinfo); + free(cpumap); + + return(pyretval); + + cleanup: + free(cpuinfo); + free(cpumap); + /* NB, Py_DECREF is a badly defined macro, so we require + * braces here to avoid 'ambiguous else' warnings from + * the compiler. + * NB. this comment is true at of time of writing wrt to + * at least python2.5. + */ + if (pyretval) { Py_DECREF(pyretval); } + if (pycpuinfo) { Py_DECREF(pycpuinfo); } + if (pycpumap) { Py_DECREF(pycpumap); } + return VIR_PY_NONE; +} + + +static PyObject * +libvirt_virDomainPinVcpu(PyObject *self ATTRIBUTE_UNUSED, + PyObject *args) { + virDomainPtr domain; + PyObject *pyobj_domain, *pycpumap, *truth; + virNodeInfo nodeinfo; + unsigned char *cpumap; + int cpumaplen, i, vcpu; + + if (!PyArg_ParseTuple(args, (char *)"OiO:virDomainPinVcpu", + &pyobj_domain, &vcpu, &pycpumap)) + return(NULL); + domain = (virDomainPtr) PyvirDomain_Get(pyobj_domain); + + if (virNodeGetInfo(virDomainGetConnect(domain), &nodeinfo) != 0) + return VIR_PY_NONE; + + cpumaplen = VIR_CPU_MAPLEN(VIR_NODEINFO_MAXCPUS(nodeinfo)); + if ((cpumap = malloc(cpumaplen)) == NULL) + return VIR_PY_NONE; + memset(cpumap, 0, cpumaplen); + + truth = PyBool_FromLong(1); + for (i = 0 ; i < VIR_NODEINFO_MAXCPUS(nodeinfo) ; i++) { + PyObject *flag = PyTuple_GetItem(pycpumap, i); + if (flag == truth) + VIR_USE_CPU(cpumap, i); + else + VIR_UNUSE_CPU(cpumap, i); + } + + virDomainPinVcpu(domain, vcpu, cpumap, cpumaplen); + Py_DECREF(truth); + free(cpumap); + + return VIR_PY_NONE; +} + + /************************************************************************ * * * Global error handler at the Python level * @@ -876,6 +1189,11 @@ static PyMethodDef libvirtMethods[] = { {(char *) "virDomainBlockStats", libvirt_virDomainBlockStats, METH_VARARGS, NULL}, {(char *) "virDomainInterfaceStats", libvirt_virDomainInterfaceStats, METH_VARARGS, NULL}, {(char *) "virNodeGetCellsFreeMemory", libvirt_virNodeGetCellsFreeMemory, METH_VARARGS, NULL}, + {(char *) "virDomainGetSchedulerType", libvirt_virDomainGetSchedulerType, METH_VARARGS, NULL}, + {(char *) "virDomainGetSchedulerParameters", libvirt_virDomainGetSchedulerParameters, METH_VARARGS, NULL}, + {(char *) "virDomainSetSchedulerParameters", libvirt_virDomainSetSchedulerParameters, METH_VARARGS, NULL}, + {(char *) "virDomainGetVcpus", libvirt_virDomainGetVcpus, METH_VARARGS, NULL}, + {(char *) "virDomainPinVcpu", libvirt_virDomainPinVcpu, METH_VARARGS, NULL}, {NULL, NULL, 0, NULL} }; -- |=- 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 -=|

3 7

[Libvir] PATCH: Remove no-op network API impl from OpenVZ driver
by Daniel P. Berrange 21 Jan '08

21 Jan '08

The openvz_driver.c file registers an implementation of the networking driver APIs, which is a no-op. Even though the networking APIs are implemented in the QEMU driver, this one impl is *shared* and used across all virtualization driver backends. Thus no other driver such as Xen/OpenVZ/etc should ever implement the network APIs. The only exceptions are the remote driver, and the test driver. So this patch removes the no-op impl from openvz diff -r 079dc4e2fd54 src/openvz_driver.c --- a/src/openvz_driver.c Mon Jan 14 18:09:49 2008 -0500 +++ b/src/openvz_driver.c Mon Jan 14 19:04:10 2008 -0500 @@ -86,14 +86,6 @@ static int openvzShutdown(void); static int openvzShutdown(void); static int openvzReload(void); static int openvzActive(void); -static int openvzCloseNetwork(virConnectPtr conn); -static virDrvOpenStatus openvzOpenNetwork(virConnectPtr conn, - const char *name ATTRIBUTE_UNUSED, - int *credtype ATTRIBUTE_UNUSED, - int ncredtype ATTRIBUTE_UNUSED, - virConnectAuthCallbackPtr cb ATTRIBUTE_UNUSED, - void *cbdata ATTRIBUTE_UNUSED, - int flags ATTRIBUTE_UNUSED); static virDomainPtr openvzDomainDefineXML(virConnectPtr conn, const char *xml); static virDomainPtr openvzDomainCreateLinux(virConnectPtr conn, const char *xml, @@ -696,20 +688,6 @@ static int openvzActive(void) { static int openvzActive(void) { return 1; -} - -static int openvzCloseNetwork(virConnectPtr conn ATTRIBUTE_UNUSED) { - return 0; -} - -static virDrvOpenStatus openvzOpenNetwork(virConnectPtr conn ATTRIBUTE_UNUSED, - const char *name ATTRIBUTE_UNUSED, - int *credtype ATTRIBUTE_UNUSED, - int ncredtype ATTRIBUTE_UNUSED, - virConnectAuthCallbackPtr cb ATTRIBUTE_UNUSED, - void *cbdata ATTRIBUTE_UNUSED, - int flags ATTRIBUTE_UNUSED) { - return VIR_DRV_OPEN_SUCCESS; } static virDriver openvzDriver = { @@ -771,27 +749,6 @@ static virDriver openvzDriver = { NULL, /* nodeGetFreeMemory */ }; -static virNetworkDriver openvzNetworkDriver = { - NULL, /* name */ - openvzOpenNetwork, /* open */ - openvzCloseNetwork, /* close */ - NULL, /* numOfNetworks */ - NULL, /* listNetworks */ - NULL, /* numOfDefinedNetworks */ - NULL, /* listDefinedNetworks */ - NULL, /* networkLookupByUUID */ - NULL, /* networkLookupByName */ - NULL, /* networkCreateXML */ - NULL, /* networkDefineXML */ - NULL, /* networkUndefine */ - NULL, /* networkCreate */ - NULL, /* networkDestroy */ - NULL, /* networkDumpXML */ - NULL, /* networkGetBridgeName */ - NULL, /* networkGetAutostart */ - NULL, /* networkSetAutostart */ -}; - static virStateDriver openvzStateDriver = { openvzStartup, openvzShutdown, @@ -801,7 +758,6 @@ static virStateDriver openvzStateDriver int openvzRegister(void) { virRegisterDriver(&openvzDriver); - virRegisterNetworkDriver(&openvzNetworkDriver); virRegisterStateDriver(&openvzStateDriver); return 0; } 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 -=|

3 3

[Libvir] PATCH: Make virsh use virFileReadAll
by Daniel P. Berrange 21 Jan '08

21 Jan '08

This patch makes virsh use the virFileReadAll API from util.c, instead of duplicating it. This means we need to export this symbol from the library. diff -r 1eb02a424697 src/libvirt_sym.version --- a/src/libvirt_sym.version Sat Jan 19 13:45:07 2008 -0500 +++ b/src/libvirt_sym.version Sat Jan 19 14:28:41 2008 -0500 @@ -131,5 +131,7 @@ __virDomainMigratePerform; __virDomainMigrateFinish; + __virFileReadAll; + local: *; }; diff -r 1eb02a424697 src/util.c --- a/src/util.c Sat Jan 19 13:45:07 2008 -0500 +++ b/src/util.c Sat Jan 19 14:28:41 2008 -0500 @@ -316,9 +316,9 @@ ssize_t safewrite(int fd, const void *bu } -int virFileReadAll(const char *path, - int maxlen, - char **buf) +int __virFileReadAll(const char *path, + int maxlen, + char **buf) { FILE *fh; struct stat st; diff -r 1eb02a424697 src/util.h --- a/src/util.h Sat Jan 19 13:45:07 2008 -0500 +++ b/src/util.h Sat Jan 19 14:28:41 2008 -0500 @@ -33,9 +33,10 @@ int saferead(int fd, void *buf, size_t c int saferead(int fd, void *buf, size_t count); ssize_t safewrite(int fd, const void *buf, size_t count); -int virFileReadAll(const char *path, - int maxlen, - char **buf); +int __virFileReadAll(const char *path, + int maxlen, + char **buf); +#define virFileReadAll(p,m,b) __virFileReadAll((p),(m),(b)) int virFileMatchesNameSuffix(const char *file, const char *name, diff -r 1eb02a424697 src/virsh.c --- a/src/virsh.c Sat Jan 19 13:45:07 2008 -0500 +++ b/src/virsh.c Sat Jan 19 14:28:41 2008 -0500 @@ -48,6 +48,7 @@ #include "internal.h" #include "console.h" +#include "util.h" static char *progname; @@ -55,6 +56,8 @@ static char *progname; #define TRUE 1 #define FALSE 0 #endif + +#define VIRSH_MAX_XML_FILE 10*1024*1024 #define VSH_PROMPT_RW "virsh # " #define VSH_PROMPT_RO "virsh > " @@ -858,66 +861,6 @@ static vshCmdOptDef opts_create[] = { {NULL, 0, 0, NULL} }; -/* Read in a whole file and return it as a string. - * If it fails, it logs an error and returns NULL. - * String must be freed by caller. - */ -static char * -readFile (vshControl *ctl, const char *filename) -{ - char *retval; - int len = 0, fd; - - if ((fd = open(filename, O_RDONLY)) == -1) { - vshError (ctl, FALSE, _("Failed to open '%s': %s"), - filename, strerror (errno)); - return NULL; - } - - if (!(retval = malloc(len + 1))) - goto out_of_memory; - - while (1) { - char buffer[1024]; - char *new; - int ret; - - if ((ret = read(fd, buffer, sizeof(buffer))) == 0) - break; - - if (ret == -1) { - if (errno == EINTR) - continue; - - vshError (ctl, FALSE, _("Failed to open '%s': read: %s"), - filename, strerror (errno)); - goto error; - } - - if (!(new = realloc(retval, len + ret + 1))) - goto out_of_memory; - - retval = new; - - memcpy(retval + len, buffer, ret); - len += ret; - } - - retval[len] = '\0'; - return retval; - - out_of_memory: - vshError (ctl, FALSE, _("Error allocating memory: %s"), - strerror(errno)); - - error: - if (retval) - free(retval); - close(fd); - - return NULL; -} - static int cmdCreate(vshControl * ctl, vshCmd * cmd) { @@ -934,8 +877,8 @@ cmdCreate(vshControl * ctl, vshCmd * cmd if (!found) return FALSE; - buffer = readFile (ctl, from); - if (buffer == NULL) return FALSE; + if (virFileReadAll(from, VIRSH_MAX_XML_FILE, &buffer) < 0) + return FALSE; dom = virDomainCreateLinux(ctl->conn, buffer, 0); free (buffer); @@ -982,8 +925,8 @@ cmdDefine(vshControl * ctl, vshCmd * cmd if (!found) return FALSE; - buffer = readFile (ctl, from); - if (buffer == NULL) return FALSE; + if (virFileReadAll(from, VIRSH_MAX_XML_FILE, &buffer) < 0) + return FALSE; dom = virDomainDefineXML(ctl->conn, buffer); free (buffer); @@ -2372,8 +2315,8 @@ cmdNetworkCreate(vshControl * ctl, vshCm if (!found) return FALSE; - buffer = readFile (ctl, from); - if (buffer == NULL) return FALSE; + if (virFileReadAll(from, VIRSH_MAX_XML_FILE, &buffer) < 0) + return FALSE; network = virNetworkCreateXML(ctl->conn, buffer); free (buffer); @@ -2420,8 +2363,8 @@ cmdNetworkDefine(vshControl * ctl, vshCm if (!found) return FALSE; - buffer = readFile (ctl, from); - if (buffer == NULL) return FALSE; + if (virFileReadAll(from, VIRSH_MAX_XML_FILE, &buffer) < 0) + return FALSE; network = virNetworkDefineXML(ctl->conn, buffer); free (buffer); @@ -3107,8 +3050,8 @@ cmdAttachDevice(vshControl * ctl, vshCmd return FALSE; } - buffer = readFile (ctl, from); - if (buffer == NULL) return FALSE; + if (virFileReadAll(from, VIRSH_MAX_XML_FILE, &buffer) < 0) + return FALSE; ret = virDomainAttachDevice(dom, buffer); free (buffer); @@ -3161,8 +3104,8 @@ cmdDetachDevice(vshControl * ctl, vshCmd return FALSE; } - buffer = readFile (ctl, from); - if (buffer == NULL) return FALSE; + if (virFileReadAll(from, VIRSH_MAX_XML_FILE, &buffer) < 0) + return FALSE; ret = virDomainDetachDevice(dom, buffer); free (buffer); 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 -=|

3 3

[Libvir] PATCH: Fix and cleanup ref counting/ domain/network object release
by Daniel P. Berrange 21 Jan '08

21 Jan '08

The referencing counting code for Connect/Domain/Network objects has many repeated codepaths, not all of which are correct. eg, the virFreeDomain method forgets to release networks when garbage collecting a virConnectPtr, and the virFreeNetwork method forgets to release domains. I've also found it very confusing having both virFreeDomain and virDomainFree. So I've changed the impl of the cleanup functions in hash.c to use a slightly different structure. There are now 6 functions: - virUnrefConnect - virReleaseConnect - virUnrefDomain - virReleaseDomain - virUnrefNetwork The 'virUnref*' APIs are intended for use by the drivers to decrement the ref count on objects they no loner need. In the virUnref* method, if the ref count hits zero, then it calls the corresponding virRelease* method to actually free the object's memory. The virUnref* methods are responsible for acquiring the connection mutex. The virRelease* method mandate that5D the mutex is already held, and will releae it as the very last step when deleting the object. The virReleaseDomain/virReleaeNetwork methods will also derecement the ref count of the connection, and call virReleaseConnection if appropriate. The patch for all this looks horrific but its not as bad as it looks, so I'd recommend reviewing the final code in hash.c, rather than the patch. I have also switched from xmlMutex to the POSIX standard pthread_mutex_t object. In theory the former may give more portability, but the patches which follow are also going to require actual pthread_t objects, for which libxml has no wrappers. Thus it is pointless using the xmlMutex abstraction. The added plus, is that pthread_mutex_t objects do not require any memory allocation, merely initialization of their pre-allocated contents so it simplifies a little code. Finally, the code in hash.c for dealing with ref counting seriously abused the 'goto' statement with multiple jumps overlapping each other in a single method. This made it very hard to follow. So I removed the use of goto in most places so its only used in error cleanup paths, and not for regular flow control. Oh, and in cleaning up internal.h I found an odd declaration of some functions from xs_internal.h which could have been made static. So I made them static. In this version I removed the call to 'virUnrefDomain' from the libvirt.c file's virDomainDestroy call, and likewise in virNetworkDestroy. Regards, 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 -=|

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[Libvir] PATCH: const-correct sexpr
by Jim Meyering 21 Jan '08

21 Jan '08

I was looking at xend_internal.c and wondered why sexpr_int's sexpr pointer wasn't const... surely, it *can't* modify that, I thought. So I made it const, and pulled the thread, which ended up making most of the sexpr* parameters in sexpr.[ch] const. I added the few inevitable casts, but imho, that cost is far outweighed by having accurate prototypes for all of these functions. Signed-off-by: Jim Meyering <meyering(a)redhat.com> --- src/sexpr.c | 26 +++++++++++++------------- src/sexpr.h | 12 ++++++------ src/xend_internal.c | 18 ++++++++++-------- 3 files changed, 29 insertions(+), 27 deletions(-) diff --git a/src/sexpr.c b/src/sexpr.c index f9e7226..b273117 100644 --- a/src/sexpr.c +++ b/src/sexpr.c @@ -150,15 +150,15 @@ sexpr_string(const char *str, ssize_t len) * Returns the resulting S-Expression pointer or NULL in case of error. */ struct sexpr * -sexpr_cons(struct sexpr *car, struct sexpr *cdr) +sexpr_cons(const struct sexpr *car, const struct sexpr *cdr) { struct sexpr *ret = sexpr_new(); if (ret == NULL) return ret; ret->kind = SEXPR_CONS; - ret->u.s.car = car; - ret->u.s.cdr = cdr; + ret->u.s.car = (struct sexpr *) car; + ret->u.s.cdr = (struct sexpr *) cdr; return ret; } @@ -171,14 +171,14 @@ sexpr_cons(struct sexpr *car, struct sexpr *cdr) * Internal operation appending a value at the end of an existing list */ static void -append(struct sexpr *lst, struct sexpr *value) +append(struct sexpr *lst, const struct sexpr *value) { while (lst->kind != SEXPR_NIL) { lst = lst->u.s.cdr; } lst->kind = SEXPR_CONS; - lst->u.s.car = value; + lst->u.s.car = (struct sexpr *) value; lst->u.s.cdr = sexpr_nil(); } @@ -191,7 +191,7 @@ append(struct sexpr *lst, struct sexpr *value) * Returns lst or NULL in case of error */ struct sexpr * -sexpr_append(struct sexpr *lst, struct sexpr *value) +sexpr_append(struct sexpr *lst, const struct sexpr *value) { if (lst == NULL) return (NULL); @@ -215,7 +215,7 @@ sexpr_append(struct sexpr *lst, struct sexpr *value) * 0 in case of error. */ size_t -sexpr2string(struct sexpr * sexpr, char *buffer, size_t n_buffer) +sexpr2string(const struct sexpr * sexpr, char *buffer, size_t n_buffer) { size_t ret = 0, tmp; @@ -415,7 +415,7 @@ string2sexpr(const char *buffer) * Returns the pointer to the sub expression or NULL if not found. */ static struct sexpr * -sexpr_lookup_key(struct sexpr *sexpr, const char *node) +sexpr_lookup_key(const struct sexpr *sexpr, const char *node) { char buffer[4096], *ptr, *token; @@ -436,7 +436,7 @@ sexpr_lookup_key(struct sexpr *sexpr, const char *node) } for (token = strsep(&ptr, "/"); token; token = strsep(&ptr, "/")) { - struct sexpr *i; + const struct sexpr *i; if (token == NULL) continue; @@ -464,7 +464,7 @@ sexpr_lookup_key(struct sexpr *sexpr, const char *node) return NULL; } - return sexpr; + return (struct sexpr *) sexpr; } /** @@ -478,7 +478,7 @@ sexpr_lookup_key(struct sexpr *sexpr, const char *node) * Returns the pointer to the sub expression or NULL if not found. */ struct sexpr * -sexpr_lookup(struct sexpr *sexpr, const char *node) +sexpr_lookup(const struct sexpr *sexpr, const char *node) { struct sexpr *s = sexpr_lookup_key(sexpr, node); @@ -528,7 +528,7 @@ sexpr_has(struct sexpr *sexpr, const char *node) * Returns the value of the node or NULL if not found. */ const char * -sexpr_node(struct sexpr *sexpr, const char *node) +sexpr_node(const struct sexpr *sexpr, const char *node) { struct sexpr *n = sexpr_lookup(sexpr, node); @@ -547,7 +547,7 @@ sexpr_node(struct sexpr *sexpr, const char *node) * Returns the value of the node or NULL if not found. */ const char * -sexpr_fmt_node(struct sexpr *sexpr, const char *fmt, ...) +sexpr_fmt_node(const struct sexpr *sexpr, const char *fmt, ...) { va_list ap; char node[4096]; diff --git a/src/sexpr.h b/src/sexpr.h index eb82479..0dd882d 100644 --- a/src/sexpr.h +++ b/src/sexpr.h @@ -35,20 +35,20 @@ struct sexpr { }; /* conversion to/from strings */ -size_t sexpr2string(struct sexpr *sexpr, char *buffer, size_t n_buffer); +size_t sexpr2string(const struct sexpr *sexpr, char *buffer, size_t n_buffer); struct sexpr *string2sexpr(const char *buffer); /* constructors and destructors */ struct sexpr *sexpr_nil(void); struct sexpr *sexpr_string(const char *str, ssize_t len); -struct sexpr *sexpr_cons(struct sexpr *car, struct sexpr *cdr); -struct sexpr *sexpr_append(struct sexpr *lst, struct sexpr *item); +struct sexpr *sexpr_cons(const struct sexpr *car, const struct sexpr *cdr); +struct sexpr *sexpr_append(struct sexpr *lst, const struct sexpr *item); void sexpr_free(struct sexpr *sexpr); /* lookup in S-Expressions */ -const char *sexpr_node(struct sexpr *sexpr, const char *node); -const char *sexpr_fmt_node(struct sexpr *sexpr, const char *fmt, ...) +const char *sexpr_node(const struct sexpr *sexpr, const char *node); +const char *sexpr_fmt_node(const struct sexpr *sexpr, const char *fmt, ...) ATTRIBUTE_FORMAT(printf,2,3); -struct sexpr *sexpr_lookup(struct sexpr *sexpr, const char *node); +struct sexpr *sexpr_lookup(const struct sexpr *sexpr, const char *node); int sexpr_has(struct sexpr *sexpr, const char *node); #endif diff --git a/src/xend_internal.c b/src/xend_internal.c index bff625b..f1389c8 100644 --- a/src/xend_internal.c +++ b/src/xend_internal.c @@ -730,7 +730,7 @@ sexpr_get(virConnectPtr xend, const char *fmt, ...) * Returns the value found or 0 if not found (but may not be an error) */ static int -sexpr_int(struct sexpr *sexpr, const char *name) +sexpr_int(const struct sexpr *sexpr, const char *name) { const char *value = sexpr_node(sexpr, name); @@ -751,7 +751,7 @@ sexpr_int(struct sexpr *sexpr, const char *name) * Returns the value found or 0 if not found (but may not be an error) */ static double -sexpr_float(struct sexpr *sexpr, const char *name) +sexpr_float(const struct sexpr *sexpr, const char *name) { const char *value = sexpr_node(sexpr, name); @@ -772,7 +772,7 @@ sexpr_float(struct sexpr *sexpr, const char *name) * Returns the value found or 0 if not found (but may not be an error) */ static uint64_t -sexpr_u64(struct sexpr *sexpr, const char *name) +sexpr_u64(const struct sexpr *sexpr, const char *name) { const char *value = sexpr_node(sexpr, name); @@ -794,7 +794,7 @@ sexpr_u64(struct sexpr *sexpr, const char *name) * Returns a -1 on error, 0 on success */ static int -sexpr_uuid(unsigned char *ptr, struct sexpr *node, const char *path) +sexpr_uuid(unsigned char *ptr, const struct sexpr *node, const char *path) { const char *r = sexpr_node(node, path); if (!r) @@ -1840,7 +1840,8 @@ xend_parse_domain_sexp(virConnectPtr conn, char *sexpr, int xendConfigVersion) { * Returns 0 in case of success, -1 in case of error */ static int -sexpr_to_xend_domain_info(virDomainPtr domain, struct sexpr *root, virDomainInfoPtr info) +sexpr_to_xend_domain_info(virDomainPtr domain, const struct sexpr *root, + virDomainInfoPtr info) { const char *flags; @@ -1889,7 +1890,7 @@ sexpr_to_xend_domain_info(virDomainPtr domain, struct sexpr *root, virDomainInfo * Returns 0 in case of success, -1 in case of error */ static int -sexpr_to_xend_node_info(struct sexpr *root, virNodeInfoPtr info) +sexpr_to_xend_node_info(const struct sexpr *root, virNodeInfoPtr info) { const char *machine; @@ -1939,7 +1940,8 @@ sexpr_to_xend_node_info(struct sexpr *root, virNodeInfoPtr info) * Returns 0 in case of success, -1 in case of error */ static int -sexpr_to_xend_topology_xml(virConnectPtr conn, struct sexpr *root, virBufferPtr xml) +sexpr_to_xend_topology_xml(virConnectPtr conn, const struct sexpr *root, + virBufferPtr xml) { const char *nodeToCpu; int numCells = 0; @@ -1992,7 +1994,7 @@ error: * Returns the domain pointer or NULL in case of error. */ static virDomainPtr -sexpr_to_domain(virConnectPtr conn, struct sexpr *root) +sexpr_to_domain(virConnectPtr conn, const struct sexpr *root) { virDomainPtr ret = NULL; unsigned char uuid[VIR_UUID_BUFLEN]; -- 1.5.4.rc3.14.g44397

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[Libvir] [PATCH] Don't access line[-1] for a zero-length "line" from fgets.
by Jim Meyering 21 Jan '08

21 Jan '08

In reviewing the StorageAPI patches, I saw that some bogus input could cause a segfault. There's similar code in libvirt.c, so this fixes both. Note that virsh.c does this, too, but it already has the required guard. The src/libvirt.c patch applies to the trunk, but isn't a big deal, since it's in the sample AuthCallback function. The storage_backend.c part applies to the work-in-progress mercurial queue, but does matter, because we have no guarantee what the exec'd command will output. Don't access line[-1] for a zero-length "line" from fgets. A NUL byte at beginning of input, or just after a newline would provoke an invalid buf[-1] access (possible segfault). * src/libvirt.c (virConnectAuthCallbackDefault): * src/storage_backend.c (virStorageBackendRunProgRegex): Signed-off-by: Jim Meyering <meyering(a)redhat.com> --- src/libvirt.c | 6 ++++-- src/storage_backend.c | 2 +- 2 files changed, 5 insertions(+), 3 deletions(-) diff --git a/src/libvirt.c b/src/libvirt.c index 2972382..331c937 100644 --- a/src/libvirt.c +++ b/src/libvirt.c @@ -74,6 +74,7 @@ static int virConnectAuthCallbackDefault(virConnectCredentialPtr cred, for (i = 0 ; i < ncred ; i++) { char buf[1024]; char *bufptr = buf; + size_t len; if (printf("%s:", cred[i].prompt) < 0) return -1; @@ -92,8 +93,9 @@ static int virConnectAuthCallbackDefault(virConnectCredentialPtr cred, } return -1; } - if (buf[strlen(buf)-1] == '\n') - buf[strlen(buf)-1] = '\0'; + len = strlen(buf); + if (len != 0 && buf[len-1] == '\n') + buf[len-1] = '\0'; break; case VIR_CRED_PASSPHRASE: diff --git a/src/storage_backend.c b/src/storage_backend.c index 32a8d65..58d8642 100644 --- a/src/storage_backend.c +++ b/src/storage_backend.c @@ -338,7 +338,7 @@ int virStorageBackendRunProgRegex(virConnectPtr conn, while (fgets(line, sizeof(line), list) != NULL) { /* Strip trailing newline */ int len = strlen(line); - if (line[len-1] == '\n') + if (len && line[len-1] == '\n') line[len-1] = '\0'; for (i = 0 ; i <= maxReg && i < nregex ; i++) { -- 1.5.4.rc4.1.g1895

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[Libvir] PATCH: Fix qemu-dm path in capabilities info
by Daniel P. Berrange 21 Jan '08

21 Jan '08

The current Xen capabilities XML data chooses between /usr/lib/xen/bin/qemu-dm and /usr/lib64/xen/bin/qemu-dm based on whether the guest arch is 64 bit. This is incorrect because the path is actually determined based on the host OS. Only x86_64 uses /usr/lib64, all other arches just use /usr/lib - even on ia64. So this patch changes the logic so that /usr/lib64 is only used if we see an x86_64 guest present - this implies host is x86_64 and that all guests whether 32 or 64bit shoudl use /usr/lib64 Dan. diff -r 38f2abccef9b src/xen_internal.c --- a/src/xen_internal.c Sun Jan 20 11:28:37 2008 -0500 +++ b/src/xen_internal.c Sun Jan 20 12:36:23 2008 -0500 @@ -2186,6 +2186,7 @@ xenHypervisorMakeCapabilitiesXML(virConn int ia64_be; } guest_archs[32]; int nr_guest_archs = 0; + int lib64 = 0; virBufferPtr xml; char *xml_str; @@ -2261,6 +2262,7 @@ xenHypervisorMakeCapabilitiesXML(virConn else if (strncmp (&token[subs[2].rm_so], "x86_64", 6) == 0) { model = "x86_64"; bits = 64; + lib64 = 1; } else if (strncmp (&token[subs[2].rm_so], "ia64", 4) == 0) { model = "ia64"; @@ -2376,7 +2378,7 @@ xenHypervisorMakeCapabilitiesXML(virConn <machine>pc</machine>\n\ <machine>isapc</machine>\n\ <loader>/usr/lib/xen/boot/hvmloader</loader>\n", - guest_archs[i].bits == 64 ? "64" : ""); + lib64 ? "64" : ""); if (r == -1) goto vir_buffer_failed; } r = virBufferAdd (xml, -- |=- 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 -=|

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[Libvir] Dom0 and entitlement
by Katti, Vadiraj (STSD-Openview) 21 Jan '08

21 Jan '08

Hi, I've some questions related to xen. Can anybody help me regarding the following questions. 1. Is dom0 a logical system(like any other vm's that are configured on it) ? If yes, then all xm commands should be applicable to it (ex : vcpu-set) . 2. /proc on dom0 reflects the physical or logical utilization. 3. Is there any entitelment concept in xen for cpu and memory? What is cpu weight used for and how is set. 4. virt-manager shows physical or logical utilization (cpu, memory) 5. How do i get the IP address of each of the guests from dom0 ? 6. What are the interfaces in domU to tell me that its a guest (or dom0) and also the type of virtualization ( eg. XEN/ VMWARE etc ) Thanks, Vadiraj

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[Libvir] Question about building libvirt on Windows
by Atsushi SAKAI 21 Jan '08

21 Jan '08

Hi, Rich I try to build on current libvirt on Windows. But failed in attached compilation message. I would be appreciate If you have any suggestions. My Instruction is follows. build cygwinenvironment. Install gettext-devel, gnutls, gnutls-devel additionally. install sunrpc-4.0-4 on / compile libvirt(current) and fails and get attached message. I have not added any additional patches to libvirt. Thanks Atsushi SAKAI

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[Libvir] Windows support document seems little bit old.
by Atsushi SAKAI 21 Jan '08

21 Jan '08

Hi, Rich I am trying to build libvirt on Windows for checking Xen domain operation. I am doing this based on following instruction. http://libvirt.org/windows.html Anyway Your document seems old. since the suggest patch is already applied to libvirt itself. Is there any plan to update it? Thanks Atsushi SAKAI

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