This is an extended definition of virStoragePRDef because it
contains runtime information (like path to pr helper socket, its
pid and alias). Since these are driver dependant we should have a
driver specific structure instead of putting all of that into
driver agnostic structure.
Signed-off-by: Michal Privoznik <mpriv...@redhat.com>
---
src/qemu/qemu_domain.c | 120 +++++++++++++++++++++++++++++++++++++++++++++++++
src/qemu/qemu_domain.h | 18 ++++++++
2 files changed, 138 insertions(+)
diff --git a/src/qemu/qemu_domain.c b/src/qemu/qemu_domain.c
index e8539dcab..7fa8c93b7 100644
--- a/src/qemu/qemu_domain.c
+++ b/src/qemu/qemu_domain.c
@@ -65,6 +65,7 @@
#endif
#include <sys/time.h>
#include <fcntl.h>
+#include <signal.h>
#if defined(HAVE_SYS_MOUNT_H)
# include <sys/mount.h>
#endif
@@ -1829,6 +1830,9 @@ qemuDomainObjPrivateDataClear(qemuDomainObjPrivatePtr
priv)
virBitmapFree(priv->migrationCaps);
priv->migrationCaps = NULL;
+
+ virHashFree(priv->prHelpers);
+ priv->prHelpers = NULL;
}
@@ -10917,6 +10921,122 @@ qemuDomainCheckMigrationCapabilities(virQEMUDriverPtr
driver,
}
+static void
+qemuDomainDiskPRObjectHashFree(void *payload,
+ const void *name)
+{
+ qemuDomainDiskPRObjectPtr tmp = payload;
+
+ if (tmp->managed &&
+ tmp->pid != (pid_t) -1) {
+ VIR_DEBUG("Forcibly killing pr-manager: %s", (const char *) name);
+ virProcessKillPainfully(tmp->pid, true);
+ }
+ VIR_FREE(tmp->path);
+ VIR_FREE(tmp);
+}
+
+
+/**
+ * qemuDomainDiskPRObjectRegister:
+ * @priv: Domain private data
+ * @alias: alias of the pr-manager object
+ * @managed: true if pr-managed object is manged by libvirt
+ * @path: socket path for the pr-manager object
+ *
+ * Records [alias, managed, path] tuple for pr-manager objects.
+ * On successful return @path is stolen and set to NULL.
+ *
+ * Returns 0 on success (with @path stolen),
+ * -1 otherwise (with error reported).
+ */
+int
+qemuDomainDiskPRObjectRegister(qemuDomainObjPrivatePtr priv,
+ const char *alias,
+ bool managed,
+ char **path)
+{
+ qemuDomainDiskPRObjectPtr tmp;
+ int ret = -1;
+
+ if (!priv->prHelpers &&
+ !(priv->prHelpers = virHashCreate(10, qemuDomainDiskPRObjectHashFree)))
+ return -1;
+
+ if ((tmp = virHashLookup(priv->prHelpers, alias))) {
+ /* Entry exists, check if it matches path. This shouldn't
+ * happen, but it's better to be safe than sorry. */
+ if (STRNEQ(tmp->path, *path)) {
+ virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
+ _("trying to change path for pr helper object"));
+
+ return -1;
+ }
+
+ /* Claim success */
+ VIR_FREE(*path);
+ return 0;
+ }
+
+ if (VIR_ALLOC(tmp) < 0)
+ goto cleanup;
+
+ tmp->managed = managed,
+ tmp->path = *path;
+ tmp->pid = (pid_t) -1;
+
+ if (virHashAddEntry(priv->prHelpers, alias, tmp) < 0)
+ goto cleanup;
+
+ *path = NULL;
+ tmp = NULL;
+ ret = 0;
+ cleanup:
+ VIR_FREE(tmp);
+ return ret;
+}
+
+
+static int
+qemuDomainDiskPRObjectKillOne(void *payload,
+ const void *name,
+ void *data ATTRIBUTE_UNUSED)
+{
+ qemuDomainDiskPRObjectPtr tmp = payload;
+
+ if (!tmp->managed)
+ return 0;
+
+ VIR_DEBUG("Killing pr-manager: %s", (const char *) name);
+ if (tmp->pid != (pid_t) -1 &&
+ virProcessKill(tmp->pid, SIGTERM) < 0) {
+ virReportSystemError(errno,
+ _("Unable to kill pr-manager: %s"),
+ (const char *) name);
+ /* Don't return error; we want to kill as many as
+ * possible. */
+ } else {
+ tmp->pid = (pid_t) -1;
+ }
+
+ return 0;
+}
+
+
+void
+qemuDomainDiskPRObjectKillAll(qemuDomainObjPrivatePtr priv)
+{
+ if (!priv->prHelpers)
+ return;
+
+ virHashForEach(priv->prHelpers,
+ qemuDomainDiskPRObjectKillOne, NULL);
+
+ virHashFree(priv->prHelpers);
+ priv->prHelpers = NULL;
+}
+
+
int
qemuDomainPrepareDiskSource(virConnectPtr conn,
virDomainDiskDefPtr disk,
diff --git a/src/qemu/qemu_domain.h b/src/qemu/qemu_domain.h
index ddfc46dcd..f741f3039 100644
--- a/src/qemu/qemu_domain.h
+++ b/src/qemu/qemu_domain.h
@@ -329,6 +329,8 @@ struct _qemuDomainObjPrivate {
/* Migration capabilities. Rechecked on reconnect, not to be saved in
* private XML. */
virBitmapPtr migrationCaps;
+
+ virHashTablePtr prHelpers;
};
# define QEMU_DOMAIN_PRIVATE(vm) \
@@ -990,4 +992,20 @@ qemuDomainPrepareDiskSource(virConnectPtr conn,
qemuDomainObjPrivatePtr priv,
virQEMUDriverConfigPtr cfg);
+typedef struct _qemuDomainDiskPRObject qemuDomainDiskPRObject;
+typedef qemuDomainDiskPRObject *qemuDomainDiskPRObjectPtr;
+struct _qemuDomainDiskPRObject {
+ bool managed;
+ char *path; /* socket path */
+ pid_t pid; /* daemon pid */
+};
+
+int
+qemuDomainDiskPRObjectRegister(qemuDomainObjPrivatePtr priv,
+ const char *alias,
+ bool managed,
+ char **path);
+void
+qemuDomainDiskPRObjectKillAll(qemuDomainObjPrivatePtr priv);
+
#endif /* __QEMU_DOMAIN_H__ */
--
2.13.6
--
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