[libvirt] [PATCH 1/4] Define a QEMU specific API to attach to a running QEMU process
Daniel P. Berrange
berrange at redhat.com
Thu May 5 17:26:05 UTC 2011
Introduce a new API in libvirt-qemu.so
virDomainPtr virDomainQemuAttach(virConnectPtr domain,
int pid,
unsigned int flags);
This allows libvirtd to attach to an existing, externally
launched QEMU process. This is useful for QEMU developers who
prefer to launch QEMU themselves for debugging/devel reasons,
but still want the benefit of libvirt based tools like
virt-top, virt-viewer, etc
* include/libvirt/libvirt-qemu.h: Define virDomainQemuAttach
* src/driver.h, src/libvirt-qemu.c, src/libvirt_qemu.syms:
Driver glue for virDomainQemuAttach
* src/esx/esx_driver.c, src/libxl/libxl_driver.c,
src/lxc/lxc_driver.c, src/openvz/openvz_driver.c,
src/phyp/phyp_driver.c, src/qemu/qemu_driver.c,
src/qemu/qemu_driver.c, src/test/test_driver.c,
src/uml/uml_driver.c, src/vbox/vbox_tmpl.c,
src/vmware/vmware_driver.c, src/xen/xen_driver.c,
src/xenapi/xenapi_driver.c: Driver entry stub
---
include/libvirt/libvirt-qemu.h | 4 ++++
src/driver.h | 5 +++++
src/esx/esx_driver.c | 1 +
src/libvirt-qemu.c | 40 ++++++++++++++++++++++++++++++++++++++++
src/libvirt_qemu.syms | 5 +++++
src/libxl/libxl_driver.c | 1 +
src/lxc/lxc_driver.c | 1 +
src/openvz/openvz_driver.c | 1 +
src/phyp/phyp_driver.c | 1 +
src/qemu/qemu_driver.c | 1 +
src/remote/remote_driver.c | 1 +
src/test/test_driver.c | 1 +
src/uml/uml_driver.c | 1 +
src/vbox/vbox_tmpl.c | 1 +
src/vmware/vmware_driver.c | 1 +
src/xen/xen_driver.c | 1 +
src/xenapi/xenapi_driver.c | 1 +
17 files changed, 67 insertions(+), 0 deletions(-)
diff --git a/include/libvirt/libvirt-qemu.h b/include/libvirt/libvirt-qemu.h
index f172eff..a182739 100644
--- a/include/libvirt/libvirt-qemu.h
+++ b/include/libvirt/libvirt-qemu.h
@@ -28,6 +28,10 @@ typedef enum {
int virDomainQemuMonitorCommand(virDomainPtr domain, const char *cmd,
char **result, unsigned int flags);
+virDomainPtr virDomainQemuAttach(virConnectPtr domain,
+ int pid,
+ unsigned int flags);
+
# ifdef __cplusplus
}
# endif
diff --git a/src/driver.h b/src/driver.h
index a8b79e6..4cf6cbd 100644
--- a/src/driver.h
+++ b/src/driver.h
@@ -509,6 +509,10 @@ typedef int
(*virDrvQemuDomainMonitorCommand)(virDomainPtr domain, const char *cmd,
char **result, unsigned int flags);
+typedef virDomainPtr
+ (*virDrvQemuDomainAttach)(virConnectPtr conn, int pid,
+ unsigned int flags);
+
typedef int
(*virDrvDomainOpenConsole)(virDomainPtr dom,
const char *devname,
@@ -638,6 +642,7 @@ struct _virDriver {
virDrvDomainRevertToSnapshot domainRevertToSnapshot;
virDrvDomainSnapshotDelete domainSnapshotDelete;
virDrvQemuDomainMonitorCommand qemuDomainMonitorCommand;
+ virDrvQemuDomainAttach qemuDomainAttach;
virDrvDomainOpenConsole domainOpenConsole;
};
diff --git a/src/esx/esx_driver.c b/src/esx/esx_driver.c
index c958197..061c857 100644
--- a/src/esx/esx_driver.c
+++ b/src/esx/esx_driver.c
@@ -4698,6 +4698,7 @@ static virDriver esxDriver = {
esxDomainRevertToSnapshot, /* domainRevertToSnapshot */
esxDomainSnapshotDelete, /* domainSnapshotDelete */
NULL, /* qemuDomainMonitorCommand */
+ NULL, /* qemuDomainAttach */
NULL, /* domainOpenConsole */
};
diff --git a/src/libvirt-qemu.c b/src/libvirt-qemu.c
index 46727c8..4c4d2e7 100644
--- a/src/libvirt-qemu.c
+++ b/src/libvirt-qemu.c
@@ -79,3 +79,43 @@ error:
virDispatchError(conn);
return -1;
}
+
+
+virDomainPtr
+virDomainQemuAttach(virConnectPtr conn, int pid,
+ unsigned int flags)
+{
+ VIR_DEBUG("conn=%p, pid=%d, flags=%u", conn, pid, flags);
+
+ virResetLastError();
+
+ if (!VIR_IS_CONNECT(conn)) {
+ virLibConnError(NULL, VIR_ERR_INVALID_CONN, __FUNCTION__);
+ virDispatchError(NULL);
+ return NULL;
+ }
+
+ if (pid <= 1) {
+ virLibDomainError(domain, VIR_ERR_INVALID_ARG, __FUNCTION__);
+ goto error;
+ }
+
+ if (conn->flags & VIR_CONNECT_RO) {
+ virLibDomainError(domain, VIR_ERR_OPERATION_DENIED, __FUNCTION__);
+ goto error;
+ }
+
+ if (conn->driver->qemuDomainAttach) {
+ virDomainPtr ret;
+ ret = conn->driver->qemuDomainAttach(conn, pid, flags);
+ if (!ret)
+ goto error;
+ return ret;
+ }
+
+ virLibConnError(conn, VIR_ERR_NO_SUPPORT, __FUNCTION__);
+
+error:
+ virDispatchError(conn);
+ return NULL;
+}
diff --git a/src/libvirt_qemu.syms b/src/libvirt_qemu.syms
index 5702d36..90e6b9e 100644
--- a/src/libvirt_qemu.syms
+++ b/src/libvirt_qemu.syms
@@ -14,3 +14,8 @@ LIBVIRT_QEMU_0.8.3 {
global:
virDomainQemuMonitorCommand;
};
+
+LIBVIRT_QEMU_0.9.2 {
+ global:
+ virDomainQemuAttach;
+} LIBVIRT_QEMU_0.8.3;
diff --git a/src/libxl/libxl_driver.c b/src/libxl/libxl_driver.c
index dec4f43..31c9881 100644
--- a/src/libxl/libxl_driver.c
+++ b/src/libxl/libxl_driver.c
@@ -2745,6 +2745,7 @@ static virDriver libxlDriver = {
NULL, /* domainRevertToSnapshot */
NULL, /* domainSnapshotDelete */
NULL, /* qemuDomainMonitorCommand */
+ NULL, /* qemuDomainAttach */
NULL, /* domainOpenConsole */
};
diff --git a/src/lxc/lxc_driver.c b/src/lxc/lxc_driver.c
index b94941d..56857ee 100644
--- a/src/lxc/lxc_driver.c
+++ b/src/lxc/lxc_driver.c
@@ -2904,6 +2904,7 @@ static virDriver lxcDriver = {
NULL, /* domainRevertToSnapshot */
NULL, /* domainSnapshotDelete */
NULL, /* qemuDomainMonitorCommand */
+ NULL, /* qemuDomainAttach */
lxcDomainOpenConsole, /* domainOpenConsole */
};
diff --git a/src/openvz/openvz_driver.c b/src/openvz/openvz_driver.c
index 4af28e9..7fd8f15 100644
--- a/src/openvz/openvz_driver.c
+++ b/src/openvz/openvz_driver.c
@@ -1666,6 +1666,7 @@ static virDriver openvzDriver = {
NULL, /* domainRevertToSnapshot */
NULL, /* domainSnapshotDelete */
NULL, /* qemuDomainMonitorCommand */
+ NULL, /* qemuDomainAttach */
NULL, /* domainOpenConsole */
};
diff --git a/src/phyp/phyp_driver.c b/src/phyp/phyp_driver.c
index ebd4a8a..3b9c187 100644
--- a/src/phyp/phyp_driver.c
+++ b/src/phyp/phyp_driver.c
@@ -3827,6 +3827,7 @@ static virDriver phypDriver = {
NULL, /* domainRevertToSnapshot */
NULL, /* domainSnapshotDelete */
NULL, /* qemuMonitorCommand */
+ NULL, /* qemuDomainAttach */
NULL, /* domainOpenConsole */
};
diff --git a/src/qemu/qemu_driver.c b/src/qemu/qemu_driver.c
index dd89786..24447b9 100644
--- a/src/qemu/qemu_driver.c
+++ b/src/qemu/qemu_driver.c
@@ -7193,6 +7193,7 @@ static virDriver qemuDriver = {
qemuDomainRevertToSnapshot, /* domainRevertToSnapshot */
qemuDomainSnapshotDelete, /* domainSnapshotDelete */
qemuDomainMonitorCommand, /* qemuDomainMonitorCommand */
+ NULL, /* qemuDomainAttach */
qemuDomainOpenConsole, /* domainOpenConsole */
};
diff --git a/src/remote/remote_driver.c b/src/remote/remote_driver.c
index e30780c..8137faa 100644
--- a/src/remote/remote_driver.c
+++ b/src/remote/remote_driver.c
@@ -11297,6 +11297,7 @@ static virDriver remote_driver = {
remoteDomainRevertToSnapshot, /* domainRevertToSnapshot */
remoteDomainSnapshotDelete, /* domainSnapshotDelete */
remoteQemuDomainMonitorCommand, /* qemuDomainMonitorCommand */
+ NULL, /* qemuDomainAttach */
remoteDomainOpenConsole, /* domainOpenConsole */
};
diff --git a/src/test/test_driver.c b/src/test/test_driver.c
index 0978214..7181753 100644
--- a/src/test/test_driver.c
+++ b/src/test/test_driver.c
@@ -5446,6 +5446,7 @@ static virDriver testDriver = {
NULL, /* domainRevertToSnapshot */
NULL, /* domainSnapshotDelete */
NULL, /* qemuDomainMonitorCommand */
+ NULL, /* qemuDomainAttach */
NULL, /* domainOpenConsole */
};
diff --git a/src/uml/uml_driver.c b/src/uml/uml_driver.c
index 33849a0..2784542 100644
--- a/src/uml/uml_driver.c
+++ b/src/uml/uml_driver.c
@@ -2252,6 +2252,7 @@ static virDriver umlDriver = {
NULL, /* domainRevertToSnapshot */
NULL, /* domainSnapshotDelete */
NULL, /* qemuDomainMonitorCommand */
+ NULL, /* qemuDomainAttach */
umlDomainOpenConsole, /* domainOpenConsole */
};
diff --git a/src/vbox/vbox_tmpl.c b/src/vbox/vbox_tmpl.c
index 8241d34..d24b883 100644
--- a/src/vbox/vbox_tmpl.c
+++ b/src/vbox/vbox_tmpl.c
@@ -8651,6 +8651,7 @@ virDriver NAME(Driver) = {
vboxDomainRevertToSnapshot, /* domainRevertToSnapshot */
vboxDomainSnapshotDelete, /* domainSnapshotDelete */
NULL, /* qemuDomainMonitorCommand */
+ NULL, /* qemuDomainAttach */
NULL, /* domainOpenConsole */
};
diff --git a/src/vmware/vmware_driver.c b/src/vmware/vmware_driver.c
index bbfb1a4..c902fc0 100644
--- a/src/vmware/vmware_driver.c
+++ b/src/vmware/vmware_driver.c
@@ -1006,6 +1006,7 @@ static virDriver vmwareDriver = {
NULL, /* domainRevertToSnapshot */
NULL, /* domainSnapshotDelete */
NULL, /* qemuDomainMonitorCommand */
+ NULL, /* qemuDomainAttach */
NULL, /* domainOpenConsole */
};
diff --git a/src/xen/xen_driver.c b/src/xen/xen_driver.c
index dd94fbc..2bb345b 100644
--- a/src/xen/xen_driver.c
+++ b/src/xen/xen_driver.c
@@ -2207,6 +2207,7 @@ static virDriver xenUnifiedDriver = {
NULL, /* domainRevertToSnapshot */
NULL, /* domainSnapshotDelete */
NULL, /* qemuDomainMonitorCommand */
+ NULL, /* qemuDomainAttach */
xenUnifiedDomainOpenConsole, /* domainOpenConsole */
};
diff --git a/src/xenapi/xenapi_driver.c b/src/xenapi/xenapi_driver.c
index 3fbdcc6..1273797 100644
--- a/src/xenapi/xenapi_driver.c
+++ b/src/xenapi/xenapi_driver.c
@@ -1888,6 +1888,7 @@ static virDriver xenapiDriver = {
NULL, /* domainRevertToSnapshot */
NULL, /* domainSnapshotDelete */
NULL, /* qemuDomainMonitorCommand */
+ NULL, /* qemuDomainAttach */
NULL, /* domainOpenConsole */
};
--
1.7.4.4
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