mirror of
https://gitlab.com/libvirt/libvirt.git
synced 2024-08-26 18:41:17 +00:00
Tue Feb 14 16:08:55 IST 2007 Mark McLoughlin <markmc@redhat.com>
* qemud/conf.c: add support for connecting a qemu guest to a bridge using a tap device in order to connect it to a virtual network. * qemud/internal.h: add <interface type="network"> config and track tapfds so as to not close them on exec. * qemud/qemud.c: don't close tapfds on exec and disconnect the iface when the guest shuts down.
This commit is contained in:
parent
3fbd82faa0
commit
0c15bd8b87
124
ChangeLog
124
ChangeLog
@ -1,26 +1,128 @@
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Tue Feb 14 15:07:26 EST 2007 Mark McLoughlin <markmc@redhat.com>
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Tue Feb 14 16:08:55 IST 2007 Mark McLoughlin <markmc@redhat.com>
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* qemud/conf.c: add support for connecting a qemu
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guest to a bridge using a tap device in order to
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connect it to a virtual network.
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* qemud/internal.h: add <interface type="network">
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config and track tapfds so as to not close them
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on exec.
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* qemud/qemud.c: don't close tapfds on exec and
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disconnect the iface when the guest shuts down.
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Tue Feb 14 16:04:48 IST 2007 Mark McLoughlin <markmc@redhat.com>
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* qemud/conf.c, qemud/internal.h: add dhcp config
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* qemud/qemud.c: start dnsmasq to provide dns/dhcp
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for virtual networks.
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Tue Feb 14 16:02:23 IST 2007 Mark McLoughlin <markmc@redhat.com>
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* configure.in: add --disable-bridge-params, check
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for libsysfs and various kernel headers
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* bridge.[ch]: add code for managing bridges
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* qemud/Makefile.am: add bridge.[ch] and link against
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libsysfs if enabled.
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* qemud/conf.c: add support for bridge config.
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* qemud/internal.h: add various bridging bits
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* qemud/qemud.c: implement qemudStartNetworkDaemon()
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and qemudShutdownNetworkDaemon().
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Tue Feb 14 15:55:02 IST 2007 Mark McLoughlin <markmc@redhat.com>
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* qemud/conf.[ch]: implement parsing and saving network
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configs.
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* qemud/driver.c: flesh out the stubs
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* qemud/internal.h: add networks list etc. to
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struct qemud_server
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* qemud/qemud.c: add qemudStartNetworkDaemon() and
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qemudShutdownNetworkDaemon() stubs.
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Tue Feb 14 15:52:34 EST 2007 Mark McLoughlin <markmc@redhat.com>
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* qemud/protocol.h: add the protocol for virtual networks
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* qemud/dispatch.c: implement the protocol
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* qemud/driver.[ch]: add stubs for the driver
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* qemud/internal.h: add struct qemud_network
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* src/qemu_internal.c: add a virtual networks driver
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Tue Feb 14 15:43:28 IST 2007 Mark McLoughlin <markmc@redhat.com>
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* src/virsh.c: add the net-* commands.
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Tue Feb 14 15:37:17 IST 2007 Mark McLoughlin <markmc@redhat.com>
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Note: potential ABI break here, but people should
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only really be using virError structs returned from
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libvirt itself.
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* include/libvirt/virterror.h: add virNetwork
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to virError
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* src/internal.h, src/virterror.c: add network param
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to __virRaiseError()
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* src/conf.c, src/hash.c, src/libvirt.c, src/proxy_internal.c,
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src/qemu_internal.c, src/sexpr.c, src/test.c, src/xen_internal.c,
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src/xend_internal.c, src/xm_internal.c, src/xml.c, src/xmlrpc.c,
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src/xs_internal.c: update.
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Tue Feb 14 15:33:05 IST 2007 Mark McLoughlin <markmc@redhat.com>
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* include/libvirt/libvirt.h.in: add the networks APIs
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* include/libvirt/virterror.h: add some error codes
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* src/driver.h: add network driver vtable
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* src/hash.c: add networks hash
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* src/internal.h: add virNetwork
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* src/libvirt.c: hook up the APIs to the network
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driver
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* src/libvirt_sym.version: add the new APIs
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* src/virterror.c: handle the new error codes
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Tue Feb 14 15:07:26 IST 2007 Mark McLoughlin <markmc@redhat.com>
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* src/conf.h: fix merge error - remove the argc argument
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from qemudBuildCommandLine()
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Tue Feb 14 15:03:22 EST 2007 Mark McLoughlin <markmc@redhat.com>
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Tue Feb 14 15:03:22 IST 2007 Mark McLoughlin <markmc@redhat.com>
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* src/virsh.c: Re-name some of the VSH_DOMBYFOO stuff
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to VSH_BYFOO in order to re-use it for the network stuff.
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Tue Feb 14 14:58:35 EST 2007 Mark McLoughlin <markmc@redhat.com>
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Tue Feb 14 14:58:35 IST 2007 Mark McLoughlin <markmc@redhat.com>
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* src/hash.c, src/internal.h: Re-name virConnect->domains_mux
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to virConnect->hashes_mux since it will also be used to
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protect the networks hash.
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Tue Feb 14 14:57:52 EST 2007 Mark McLoughlin <markmc@redhat.com>
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Tue Feb 14 14:57:52 IST 2007 Mark McLoughlin <markmc@redhat.com>
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* qemud/conf.c: qemudSaveConfig() will always report a
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more specific error, so we should avoid overwriting
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this error.
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Tue Feb 14 14:54:25 EST 2007 Mark McLoughlin <markmc@redhat.com>
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Tue Feb 14 14:54:25 IST 2007 Mark McLoughlin <markmc@redhat.com>
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* qemud/qemud.c: Re-factor out qemudExec() so that it can
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be used to launch dnsmasq.
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@ -28,7 +130,7 @@ Tue Feb 14 14:54:25 EST 2007 Mark McLoughlin <markmc@redhat.com>
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* qemud/conf.c: don't return argc from qemudBuildCommandLine()
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as exec() doesn't need it.
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Tue Feb 14 14:52:12 EST 2007 Mark McLoughlin <markmc@redhat.com>
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Tue Feb 14 14:52:12 IST 2007 Mark McLoughlin <markmc@redhat.com>
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* qemud/conf.c: Re-factor bits of conf.c so that:
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@ -38,25 +140,25 @@ Tue Feb 14 14:52:12 EST 2007 Mark McLoughlin <markmc@redhat.com>
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- split qemudScanConfigDir() out so that qemudScanConfigs()
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can scan multiple configDirs
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Tue Feb 14 14:50:22 EST 2007 Mark McLoughlin <markmc@redhat.com>
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Tue Feb 14 14:50:22 IST 2007 Mark McLoughlin <markmc@redhat.com>
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* qemud/conf.c: handle an unspecified MAC address,
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fix the argv freeing code in qemudBuildCommandLine()
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and fix copy and paste error in qemudGenerateXML()
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Tue Feb 14 14:42:38 EST 2007 Mark McLoughlin <markmc@redhat.com>
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Tue Feb 14 14:42:38 IST 2007 Mark McLoughlin <markmc@redhat.com>
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* src/internal.h: add virConnect->qemud_fd so that
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xen and qemu don't share the handle member.
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* src/hash.c, src/qemu_internal.c: update
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Tue Feb 14 14:40:52 EST 2007 Mark McLoughlin <markmc@redhat.com>
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Tue Feb 14 14:40:52 IST 2007 Mark McLoughlin <markmc@redhat.com>
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* qemud/conf.c, qemud/dispatch.c, qemud/driver.c,
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qemud/qemud.c: include autoconf's config.h
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Tue Feb 14 14:39:18 EST 2007 Mark McLoughlin <markmc@redhat.com>
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Tue Feb 14 14:39:18 IST 2007 Mark McLoughlin <markmc@redhat.com>
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* conf.[ch]: rename from config.[ch] so we can use
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autoconf's config.h
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@ -65,7 +167,7 @@ Tue Feb 14 14:39:18 EST 2007 Mark McLoughlin <markmc@redhat.com>
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* driver.c, qemud.c: upd.
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Tue Feb 14 14:33:22 EST 2007 Mark McLoughlin <markmc@redhat.com>
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Tue Feb 14 14:33:22 IST 2007 Mark McLoughlin <markmc@redhat.com>
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* autogen.sh: run autoheader
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148
qemud/conf.c
148
qemud/conf.c
@ -366,6 +366,8 @@ static struct qemud_vm_net_def *qemudParseInterfaceXML(struct qemud_server *serv
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xmlNodePtr cur;
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xmlChar *macaddr = NULL;
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xmlChar *type = NULL;
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xmlChar *network = NULL;
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xmlChar *tapifname = NULL;
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if (!net) {
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qemudReportError(server, VIR_ERR_NO_MEMORY, "net");
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@ -386,6 +388,8 @@ static struct qemud_vm_net_def *qemudParseInterfaceXML(struct qemud_server *serv
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net->type = QEMUD_NET_CLIENT;
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else if (xmlStrEqual(type, BAD_CAST "mcast"))
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net->type = QEMUD_NET_MCAST;
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else if (xmlStrEqual(type, BAD_CAST "network"))
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net->type = QEMUD_NET_NETWORK;
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/*
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else if (xmlStrEqual(type, BAD_CAST "vde"))
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typ = QEMUD_NET_VDE;
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@ -402,6 +406,14 @@ static struct qemud_vm_net_def *qemudParseInterfaceXML(struct qemud_server *serv
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if ((macaddr == NULL) &&
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(xmlStrEqual(cur->name, BAD_CAST "mac"))) {
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macaddr = xmlGetProp(cur, BAD_CAST "address");
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} else if ((network == NULL) &&
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(net->type == QEMUD_NET_NETWORK) &&
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(xmlStrEqual(cur->name, BAD_CAST "source"))) {
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network = xmlGetProp(cur, BAD_CAST "network");
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} else if ((tapifname == NULL) &&
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(net->type == QEMUD_NET_NETWORK) &&
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xmlStrEqual(cur->name, BAD_CAST "tap")) {
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tapifname = xmlGetProp(cur, BAD_CAST "ifname");
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}
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}
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cur = cur->next;
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@ -421,7 +433,47 @@ static struct qemud_vm_net_def *qemudParseInterfaceXML(struct qemud_server *serv
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xmlFree(macaddr);
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}
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if (net->type == QEMUD_NET_NETWORK) {
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int len;
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if (network == NULL) {
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qemudReportError(server, VIR_ERR_INTERNAL_ERROR,
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"No <source> 'network' attribute specified with <interface type='network'/>");
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goto error;
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} else if ((len = xmlStrlen(network)) >= QEMUD_MAX_NAME_LEN) {
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qemudReportError(server, VIR_ERR_INTERNAL_ERROR,
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"Network name '%s' too long", network);
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goto error;
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} else {
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strncpy(net->dst.network.name, (char *)network, len);
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net->dst.network.name[len] = '\0';
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}
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if (network)
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xmlFree(network);
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if (tapifname != NULL) {
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if ((len == xmlStrlen(tapifname)) >= BR_IFNAME_MAXLEN) {
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qemudReportError(server, VIR_ERR_INTERNAL_ERROR,
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"TAP interface name '%s' is too long", tapifname);
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goto error;
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} else {
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strncpy(net->dst.network.tapifname, (char *)tapifname, len);
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net->dst.network.tapifname[len] = '\0';
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}
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xmlFree(tapifname);
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}
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}
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return net;
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error:
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if (network)
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xmlFree(network);
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if (tapifname)
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xmlFree(tapifname);
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free(net);
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return NULL;
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}
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@ -770,6 +822,68 @@ static int qemudParseXML(struct qemud_server *server,
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}
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static char *
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qemudNetworkIfaceConnect(struct qemud_server *server,
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struct qemud_vm *vm,
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struct qemud_vm_net_def *net)
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{
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struct qemud_network *network;
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const char *tapifname;
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char tapfdstr[4+3+32+7];
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char *retval = NULL;
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int err;
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int tapfd = -1;
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int *tapfds;
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if (!(network = qemudFindNetworkByName(server, net->dst.network.name))) {
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qemudReportError(server, VIR_ERR_INTERNAL_ERROR,
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"Network '%s' not found", net->dst.network.name);
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goto error;
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} else if (network->bridge[0] == '\0') {
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qemudReportError(server, VIR_ERR_INTERNAL_ERROR,
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"Network '%s' not active", net->dst.network.name);
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goto error;
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}
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if (net->dst.network.tapifname[0] == '\0' ||
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strchr(net->dst.network.tapifname, '%')) {
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tapifname = "vnet%d";
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} else {
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tapifname = net->dst.network.tapifname;
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}
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if ((err = brAddTap(server->brctl, network->bridge, tapifname,
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&net->dst.network.tapifname[0], BR_IFNAME_MAXLEN, &tapfd))) {
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qemudReportError(server, VIR_ERR_INTERNAL_ERROR,
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"Failed to add tap interface '%s' to bridge '%s' : %s",
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tapifname, network->bridge, strerror(err));
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goto error;
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}
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snprintf(tapfdstr, sizeof(tapfdstr), "tap,fd=%d,script=", tapfd);
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if (!(retval = strdup(tapfdstr)))
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goto no_memory;
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if (!(tapfds = realloc(vm->tapfds, sizeof(int) * (vm->ntapfds+2))))
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goto no_memory;
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vm->tapfds = tapfds;
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vm->tapfds[vm->ntapfds++] = tapfd;
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vm->tapfds[vm->ntapfds] = -1;
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return retval;
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no_memory:
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qemudReportError(server, VIR_ERR_NO_MEMORY, "tapfds");
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error:
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if (retval)
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free(retval);
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if (tapfd != -1)
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close(tapfd);
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return NULL;
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}
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/*
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* Constructs a argv suitable for launching qemu with config defined
|
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* for a given virtual machine.
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@ -921,9 +1035,15 @@ int qemudBuildCommandLine(struct qemud_server *server,
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goto no_memory;
|
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if (!((*argv)[++n] = strdup("-net")))
|
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goto no_memory;
|
||||
/* XXX don't hardcode user */
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if (!((*argv)[++n] = strdup("user")))
|
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goto no_memory;
|
||||
|
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if (net->type != QEMUD_NET_NETWORK) {
|
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/* XXX don't hardcode user */
|
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if (!((*argv)[++n] = strdup("user")))
|
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goto no_memory;
|
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} else {
|
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if (!((*argv)[++n] = qemudNetworkIfaceConnect(server, vm, net)))
|
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goto error;
|
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}
|
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|
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net = net->next;
|
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}
|
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@ -948,12 +1068,20 @@ int qemudBuildCommandLine(struct qemud_server *server,
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return 0;
|
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|
||||
no_memory:
|
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qemudReportError(server, VIR_ERR_NO_MEMORY, "argv");
|
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error:
|
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if (vm->tapfds) {
|
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for (i = 0; vm->tapfds[i] != -1; i++)
|
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close(vm->tapfds[i]);
|
||||
free(vm->tapfds);
|
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vm->tapfds = NULL;
|
||||
vm->ntapfds = 0;
|
||||
}
|
||||
if (argv) {
|
||||
for (i = 0 ; i < n ; i++)
|
||||
free((*argv)[i]);
|
||||
free(*argv);
|
||||
}
|
||||
qemudReportError(server, VIR_ERR_NO_MEMORY, "argv");
|
||||
return -1;
|
||||
}
|
||||
|
||||
@ -1716,6 +1844,18 @@ char *qemudGenerateXML(struct qemud_server *server, struct qemud_vm *vm) {
|
||||
net->mac[3], net->mac[4], net->mac[5]) < 0)
|
||||
goto no_memory;
|
||||
|
||||
if (net->type == QEMUD_NET_NETWORK) {
|
||||
if (qemudBufferPrintf(&buf, " <network name='%s", net->dst.network.name) < 0)
|
||||
goto no_memory;
|
||||
|
||||
if (net->dst.network.tapifname[0] != '\0' &&
|
||||
qemudBufferPrintf(&buf, " tapifname='%s'", net->dst.network.tapifname) < 0)
|
||||
goto no_memory;
|
||||
|
||||
if (qemudBufferPrintf(&buf, "/>\n") < 0)
|
||||
goto no_memory;
|
||||
}
|
||||
|
||||
if (qemudBufferPrintf(&buf, " </interface>\n") < 0)
|
||||
goto no_memory;
|
||||
|
||||
|
@ -95,6 +95,7 @@ enum qemud_vm_net_type {
|
||||
QEMUD_NET_SERVER,
|
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QEMUD_NET_CLIENT,
|
||||
QEMUD_NET_MCAST,
|
||||
QEMUD_NET_NETWORK,
|
||||
/* QEMUD_NET_VDE*/
|
||||
};
|
||||
|
||||
@ -123,6 +124,10 @@ struct qemud_vm_net_def {
|
||||
struct {
|
||||
char vlan[PATH_MAX];
|
||||
} vde;
|
||||
struct {
|
||||
char name[QEMUD_MAX_NAME_LEN];
|
||||
char tapifname[BR_IFNAME_MAXLEN];
|
||||
} network;
|
||||
} dst;
|
||||
|
||||
struct qemud_vm_net_def *next;
|
||||
@ -193,6 +198,9 @@ struct qemud_vm {
|
||||
int monitor;
|
||||
int pid;
|
||||
|
||||
int *tapfds;
|
||||
int ntapfds;
|
||||
|
||||
char configFile[PATH_MAX];
|
||||
|
||||
struct qemud_vm_def def;
|
||||
|
@ -332,9 +332,24 @@ static int qemudDispatchServer(struct qemud_server *server, struct qemud_socket
|
||||
}
|
||||
|
||||
|
||||
static int
|
||||
qemudLeaveFdOpen(int *openfds, int fd)
|
||||
{
|
||||
int i;
|
||||
|
||||
if (!openfds)
|
||||
return 0;
|
||||
|
||||
for (i = 0; openfds[i] != -1; i++)
|
||||
if (fd == openfds[i])
|
||||
return 1;
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int
|
||||
qemudExec(struct qemud_server *server, char **argv,
|
||||
int *retpid, int *outfd, int *errfd) {
|
||||
int *retpid, int *outfd, int *errfd, int *openfds) {
|
||||
int pid, null;
|
||||
int pipeout[2] = {-1,-1};
|
||||
int pipeerr[2] = {-1,-1};
|
||||
@ -392,7 +407,8 @@ qemudExec(struct qemud_server *server, char **argv,
|
||||
for (i = 0; i < open_max; i++)
|
||||
if (i != STDOUT_FILENO &&
|
||||
i != STDERR_FILENO &&
|
||||
i != STDIN_FILENO)
|
||||
i != STDIN_FILENO &&
|
||||
!qemudLeaveFdOpen(openfds, i))
|
||||
close(i);
|
||||
|
||||
execvp(argv[0], argv);
|
||||
@ -429,11 +445,21 @@ int qemudStartVMDaemon(struct qemud_server *server,
|
||||
if (qemudBuildCommandLine(server, vm, &argv) < 0)
|
||||
return -1;
|
||||
|
||||
if (qemudExec(server, argv, &vm->pid, &vm->stdout, &vm->stderr) == 0) {
|
||||
if (qemudExec(server, argv, &vm->pid, &vm->stdout, &vm->stderr, vm->tapfds) == 0) {
|
||||
vm->def.id = server->nextvmid++;
|
||||
ret = 0;
|
||||
}
|
||||
|
||||
if (vm->tapfds) {
|
||||
for (i = 0; vm->tapfds[i] != -1; i++) {
|
||||
close(vm->tapfds[i]);
|
||||
vm->tapfds[i] = -1;
|
||||
}
|
||||
free(vm->tapfds);
|
||||
vm->tapfds = NULL;
|
||||
vm->ntapfds = 0;
|
||||
}
|
||||
|
||||
for (i = 0 ; argv[i] ; i++)
|
||||
free(argv[i]);
|
||||
free(argv);
|
||||
@ -632,8 +658,17 @@ static int qemudVMData(struct qemud_server *server ATTRIBUTE_UNUSED,
|
||||
}
|
||||
}
|
||||
|
||||
static void
|
||||
qemudNetworkIfaceDisconnect(struct qemud_server *server ATTRIBUTE_UNUSED,
|
||||
struct qemud_vm *vm ATTRIBUTE_UNUSED,
|
||||
struct qemud_vm_net_def *net) {
|
||||
/* FIXME: will be needed to remove iptables rules */
|
||||
net = NULL;
|
||||
}
|
||||
|
||||
int qemudShutdownVMDaemon(struct qemud_server *server, struct qemud_vm *vm) {
|
||||
struct qemud_vm *prev = NULL, *curr = server->activevms;
|
||||
struct qemud_vm_net_def *net;
|
||||
|
||||
/* Already cleaned-up */
|
||||
if (vm->pid < 0)
|
||||
@ -676,6 +711,13 @@ int qemudShutdownVMDaemon(struct qemud_server *server, struct qemud_vm *vm) {
|
||||
curr->monitor = -1;
|
||||
server->nvmfds -= 2;
|
||||
|
||||
net = vm->def.nets;
|
||||
while (net) {
|
||||
if (net->type == QEMUD_NET_NETWORK)
|
||||
qemudNetworkIfaceDisconnect(server, vm, net);
|
||||
net = net->next;
|
||||
}
|
||||
|
||||
if (waitpid(vm->pid, NULL, WNOHANG) != vm->pid) {
|
||||
kill(vm->pid, SIGKILL);
|
||||
if (waitpid(vm->pid, NULL, 0) != vm->pid) {
|
||||
@ -794,7 +836,7 @@ dhcpStartDhcpDaemon(struct qemud_server *server,
|
||||
if (qemudBuildDnsmasqArgv(server, network, &argv) < 0)
|
||||
return -1;
|
||||
|
||||
ret = qemudExec(server, argv, &network->dnsmasqPid, NULL, NULL);
|
||||
ret = qemudExec(server, argv, &network->dnsmasqPid, NULL, NULL, NULL);
|
||||
|
||||
for (i = 0; argv[i]; i++)
|
||||
free(argv[i]);
|
||||
|
Loading…
Reference in New Issue
Block a user