[PATCH] qemu: accept filename for incoming migration

[Jim Paris <jim-XrPbb/hENzg@public.gmane.org>]

Extends option syntax to allow "-incoming file://<path>" for
file-based migration.

Signed-off-by: Jim Paris <jim-XrPbb/hENzg@public.gmane.org>
---

For some applications (e.g. qemu launched by libvirt) it's much easier
to just pass a filename on the commandline than to feed data via
stdin.

 qemu/migration.c |   10 +++++++++-
 1 files changed, 9 insertions(+), 1 deletions(-)

diff --git a/qemu/migration.c b/qemu/migration.c
index 96b0c2f..737bb22 100644
--- a/qemu/migration.c
+++ b/qemu/migration.c
@@ -949,7 +949,15 @@ int migrate_incoming(const char *device)
 
     if (strcmp(device, "stdio") == 0)
 	ret = migrate_incoming_fd(STDIN_FILENO);
-    else if (strstart(device, "tcp://", &ptr)) {
+    else if (strstart(device, "file://", &ptr)) {
+	int fd = open(ptr, O_RDONLY);
+	if (fd < 0) {
+	    ret = MIG_STAT_DST_INVALID_PARAMS;
+	} else {
+	    ret = migrate_incoming_fd(fd);
+	    close(fd);
+	}
+    } else if (strstart(device, "tcp://", &ptr)) {
 	char *host, *end;
 	host = strdup(ptr);
 	end = strchr(host, '/');
-- 
1.5.3.rc4


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