[PATCH V3 09/16] migration: cpr-uri option

[Steve Sistare <steven.sistare@oracle.com>]

Define the cpr-uri QEMU command-line option to specify the URI from
which CPR vmstate is loaded for cpr-transfer mode.

Signed-off-by: Steve Sistare <steven.sistare@oracle.com>
Acked-by: Peter Xu <peterx@redhat.com>
---
 include/migration/cpr.h |  3 +++
 migration/cpr.c         | 12 ++++++++++++
 qemu-options.hx         |  8 ++++++++
 system/vl.c             |  4 ++++
 4 files changed, 27 insertions(+)

diff --git a/include/migration/cpr.h b/include/migration/cpr.h
index ae318da..c9c291f 100644
--- a/include/migration/cpr.h
+++ b/include/migration/cpr.h
@@ -15,6 +15,9 @@ void cpr_save_fd(const char *name, int id, int fd);
 void cpr_delete_fd(const char *name, int id);
 int cpr_find_fd(const char *name, int id);
 
+void cpr_set_cpr_uri(const char *uri);
+const char *cpr_get_cpr_uri(void);
+
 int cpr_state_save(Error **errp);
 int cpr_state_load(Error **errp);
 void cpr_state_close(void);
diff --git a/migration/cpr.c b/migration/cpr.c
index be1dc92..b72d1f4 100644
--- a/migration/cpr.c
+++ b/migration/cpr.c
@@ -116,6 +116,18 @@ QIOChannel *cpr_state_ioc(void)
     return qemu_file_get_ioc(cpr_state_file);
 }
 
+static char *cpr_uri;
+
+void cpr_set_cpr_uri(const char *uri)
+{
+    cpr_uri = g_strdup(uri);
+}
+
+const char *cpr_get_cpr_uri(void)
+{
+    return cpr_uri;
+}
+
 int cpr_state_save(Error **errp)
 {
     int ret;
diff --git a/qemu-options.hx b/qemu-options.hx
index fdd6bf2..89bbc9f 100644
--- a/qemu-options.hx
+++ b/qemu-options.hx
@@ -4922,6 +4922,14 @@ SRST
 
 ERST
 
+DEF("cpr-uri", HAS_ARG, QEMU_OPTION_cpr_uri, \
+    "-cpr-uri unix:socketpath\n",
+    QEMU_ARCH_ALL)
+SRST
+``-cpr-uri unix:socketpath``
+    URI for incoming CPR state, for the cpr-transfer migration mode.
+ERST
+
 DEF("incoming", HAS_ARG, QEMU_OPTION_incoming, \
     "-incoming tcp:[host]:port[,to=maxport][,ipv4=on|off][,ipv6=on|off]\n" \
     "-incoming rdma:host:port[,ipv4=on|off][,ipv6=on|off]\n" \
diff --git a/system/vl.c b/system/vl.c
index df26264..5d08fade 100644
--- a/system/vl.c
+++ b/system/vl.c
@@ -77,6 +77,7 @@
 #include "hw/block/block.h"
 #include "hw/i386/x86.h"
 #include "hw/i386/pc.h"
+#include "migration/cpr.h"
 #include "migration/misc.h"
 #include "migration/snapshot.h"
 #include "sysemu/tpm.h"
@@ -3479,6 +3480,9 @@ void qemu_init(int argc, char **argv)
                     exit(1);
                 }
                 break;
+            case QEMU_OPTION_cpr_uri:
+                cpr_set_cpr_uri(optarg);
+                break;
             case QEMU_OPTION_incoming:
                 if (!incoming) {
                     runstate_set(RUN_STATE_INMIGRATE);
-- 
1.8.3.1