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[Qemu-block] [PATCH v11 08/13] migration/qemu-file: add qemu_put_counted
From: |
Vladimir Sementsov-Ogievskiy |
Subject: |
[Qemu-block] [PATCH v11 08/13] migration/qemu-file: add qemu_put_counted_string() |
Date: |
Tue, 13 Mar 2018 21:03:15 +0300 |
Add function opposite to qemu_get_counted_string.
qemu_put_counted_string puts one-byte length of the string (string
should not be longer than 255 characters), and then it puts the string,
without last zero byte.
Signed-off-by: Vladimir Sementsov-Ogievskiy <address@hidden>
Reviewed-by: John Snow <address@hidden>
Reviewed-by: Juan Quintela <address@hidden>
Reviewed-by: Fam Zheng <address@hidden>
---
migration/qemu-file.h | 2 ++
migration/qemu-file.c | 13 +++++++++++++
2 files changed, 15 insertions(+)
diff --git a/migration/qemu-file.h b/migration/qemu-file.h
index aae4e5ed36..f4f356ab12 100644
--- a/migration/qemu-file.h
+++ b/migration/qemu-file.h
@@ -174,4 +174,6 @@ size_t ram_control_save_page(QEMUFile *f, ram_addr_t
block_offset,
ram_addr_t offset, size_t size,
uint64_t *bytes_sent);
+void qemu_put_counted_string(QEMUFile *f, const char *name);
+
#endif
diff --git a/migration/qemu-file.c b/migration/qemu-file.c
index 2ab2bf362d..e85f501f86 100644
--- a/migration/qemu-file.c
+++ b/migration/qemu-file.c
@@ -734,6 +734,19 @@ size_t qemu_get_counted_string(QEMUFile *f, char buf[256])
}
/*
+ * Put a string with one preceding byte containing its length. The length of
+ * the string should be less than 256.
+ */
+void qemu_put_counted_string(QEMUFile *f, const char *str)
+{
+ size_t len = strlen(str);
+
+ assert(len < 256);
+ qemu_put_byte(f, len);
+ qemu_put_buffer(f, (const uint8_t *)str, len);
+}
+
+/*
* Set the blocking state of the QEMUFile.
* Note: On some transports the OS only keeps a single blocking state for
* both directions, and thus changing the blocking on the main
--
2.11.1
- [Qemu-block] [PATCH v11 02/13] block/dirty-bitmap: fix locking in bdrv_reclaim_dirty_bitmap, (continued)
- [Qemu-block] [PATCH v11 02/13] block/dirty-bitmap: fix locking in bdrv_reclaim_dirty_bitmap, Vladimir Sementsov-Ogievskiy, 2018/03/13
- [Qemu-block] [PATCH v11 01/13] block/dirty-bitmap: add bdrv_dirty_bitmap_enable_successor(), Vladimir Sementsov-Ogievskiy, 2018/03/13
- [Qemu-block] [PATCH v11 05/13] migration: introduce postcopy-only pending, Vladimir Sementsov-Ogievskiy, 2018/03/13
- [Qemu-block] [PATCH v11 07/13] migration: include migrate_dirty_bitmaps in migrate_postcopy, Vladimir Sementsov-Ogievskiy, 2018/03/13
- [Qemu-block] [PATCH v11 12/13] iotests: add dirty bitmap migration test, Vladimir Sementsov-Ogievskiy, 2018/03/13
- [Qemu-block] [PATCH v11 09/13] migration: add is_active_iterate handler, Vladimir Sementsov-Ogievskiy, 2018/03/13
- [Qemu-block] [PATCH v11 13/13] iotests: add dirty bitmap postcopy test, Vladimir Sementsov-Ogievskiy, 2018/03/13
- [Qemu-block] [PATCH v11 10/13] migration: allow qmp command migrate-start-postcopy for any postcopy, Vladimir Sementsov-Ogievskiy, 2018/03/13
- [Qemu-block] [PATCH v11 08/13] migration/qemu-file: add qemu_put_counted_string(),
Vladimir Sementsov-Ogievskiy <=
- [Qemu-block] [PATCH v11 06/13] qapi: add dirty-bitmaps migration capability, Vladimir Sementsov-Ogievskiy, 2018/03/13
- [Qemu-block] [PATCH v11 04/13] dirty-bitmap: add locked state, Vladimir Sementsov-Ogievskiy, 2018/03/13
- [Qemu-block] [PATCH v11 11/13] migration: add postcopy migration of dirty bitmaps, Vladimir Sementsov-Ogievskiy, 2018/03/13
- Re: [Qemu-block] [Qemu-devel] [PATCH v11 00/13] Dirty bitmaps postcopy migration, no-reply, 2018/03/13