This patch contains internal helper codes.
Signed-off-by: Wenchao Xia <address@hidden>
---
block.c | 2 +-
block.h | 1 +
libqblock/libqblock-helper.c | 92 ++++++++++++++++++++++++++++++++++++++++++
libqblock/libqblock-helper.h | 57 ++++++++++++++++++++++++++
4 files changed, 151 insertions(+), 1 deletions(-)
create mode 100644 libqblock/libqblock-helper.c
create mode 100644 libqblock/libqblock-helper.h
diff --git a/block.c b/block.c
index 470bdcc..8b312f8 100644
--- a/block.c
+++ b/block.c
@@ -196,7 +196,7 @@ static void bdrv_io_limits_intercept(BlockDriverState *bs,
}
/* check if the path starts with "<protocol>:" */
-static int path_has_protocol(const char *path)
+int path_has_protocol(const char *path)
{
const char *p;
diff --git a/block.h b/block.h
index 2e2be11..e7da711 100644
--- a/block.h
+++ b/block.h
@@ -405,4 +405,5 @@ typedef enum {
#define BLKDBG_EVENT(bs, evt) bdrv_debug_event(bs, evt)
void bdrv_debug_event(BlockDriverState *bs, BlkDebugEvent event);
+int path_has_protocol(const char *path);
#endif
diff --git a/libqblock/libqblock-helper.c b/libqblock/libqblock-helper.c
new file mode 100644
index 0000000..f9e8ce9
--- /dev/null
+++ b/libqblock/libqblock-helper.c
@@ -0,0 +1,92 @@
+#include "libqblock-helper.h"
+#include "libqblock-types.h"
+#include "libqblock-error.h"
+
+const char *fmt2str(enum QBlockFormat fmt)
+{
+ const char *ret = NULL;
+ switch (fmt) {
+ case QB_FMT_COW:
+ ret = "cow";
+ break;
+ case QB_FMT_QED:
+ ret = "qed";
+ break;
+ case QB_FMT_QCOW:
+ ret = "qcow";
+ break;
+ case QB_FMT_QCOW2:
+ ret = "qcow2";
+ break;
+ case QB_FMT_RAW:
+ ret = "raw";
+ break;
+ case QB_FMT_RBD:
+ ret = "rbd";
+ break;
+ case QB_FMT_SHEEPDOG:
+ ret = "sheepdog";
+ break;
+ case QB_FMT_VDI:
+ ret = "vdi";
+ break;
+ case QB_FMT_VMDK:
+ ret = "vmdk";
+ break;
+ case QB_FMT_VPC:
+ ret = "vpc";
+ break;
+ default:
+ break;
+ }
+ return ret;
+}
+
+enum QBlockFormat str2fmt(const char *fmt)
+{
+ enum QBlockFormat ret = QB_FMT_NONE;
+ if (0 == strcmp(fmt, "cow")) {
+ ret = QB_FMT_COW;
+ } else if (0 == strcmp(fmt, "qed")) {
+ ret = QB_FMT_QED;
+ } else if (0 == strcmp(fmt, "qcow")) {
+ ret = QB_FMT_QCOW;
+ } else if (0 == strcmp(fmt, "qcow2")) {
+ ret = QB_FMT_QCOW2;
+ } else if (0 == strcmp(fmt, "raw")) {
+ ret = QB_FMT_RAW;
+ } else if (0 == strcmp(fmt, "rbd")) {
+ ret = QB_FMT_RBD;
+ } else if (0 == strcmp(fmt, "sheepdog")) {
+ ret = QB_FMT_SHEEPDOG;
+ } else if (0 == strcmp(fmt, "vdi")) {
+ ret = QB_FMT_VDI;
+ } else if (0 == strcmp(fmt, "vmdk")) {
+ ret = QB_FMT_VMDK;
+ } else if (0 == strcmp(fmt, "vpc")) {
+ ret = QB_FMT_VPC;
+ }
+ return ret;
+}
+
+void set_broker_err(struct QBroker *broker, int err_ret,
+ const char *fmt, ...)
+{
+ va_list ap;
+
+ broker->err_ret = err_ret;
+ if (err_ret == QB_ERR_INTERNAL_ERR) {
+ broker->err_no = -errno;
+ } else {
+ broker->err_no = 0;
+ }
+
+ va_start(ap, fmt);
+ vsnprintf(broker->err_msg, sizeof(broker->err_msg), fmt, ap);
+ va_end(ap);
+}
+
+void set_broker_err_nomem(struct QBroker *broker)
+{
+ set_broker_err(broker, QB_ERR_MEM_ERR, "No Memory.");
+}
diff --git a/libqblock/libqblock-helper.h b/libqblock/libqblock-helper.h
new file mode 100644
index 0000000..4330472
--- /dev/null
+++ b/libqblock/libqblock-helper.h
@@ -0,0 +1,57 @@
+/*
+ * QEMU block layer library
+ *
+ * Copyright IBM, Corp. 2012
+ *
+ * Authors:
+ * Wenchao Xia <address@hidden>
+ *
+ * This work is licensed under the terms of the GNU LGPL, version 2 or later.
+ * See the COPYING.LIB file in the top-level directory.
+ *
+ */
+
+#ifndef LIBQBLOCK_HELPER
+#define LIBQBLOCK_HELPER
+
+#include "block.h"
+#include "block_int.h"
+
+#include "libqblock-types.h"
+
+/* this file contains helper function used internally. */
+#define SECTOR_SIZE (512)
+#define SECTOR_SIZE_MASK (0x01ff)
+#define SECTOR_SIZE_BITS_NUM (9)
+#define FUNC_FREE free
+#define FUNC_MALLOC malloc
+#define FUNC_CALLOC calloc
+
+#define CLEAN_FREE(p) { \
+ FUNC_FREE(p); \
+ (p) = NULL; \
+}
+
+/* details should be hidden to user */
+struct QBlockState {
+ BlockDriverState *bdrvs;
+ /* internal used file name now, if it is not NULL, it means
+ image was opened.
+ */
+ char *filename;
+};
+
+#define QB_ERR_STRING_SIZE (1024)
+struct QBroker {
+ /* last error */
+ char err_msg[QB_ERR_STRING_SIZE];
+ int err_ret; /* last error return of libqblock. */
+ int err_no; /* 2nd level of error, errno what below reports */
+};
+
+const char *fmt2str(enum QBlockFormat fmt);
+enum QBlockFormat str2fmt(const char *fmt);
+void set_broker_err(struct QBroker *broker, int err_ret,
+ const char *fmt, ...);
+void set_broker_err_nomem(struct QBroker *broker);
+#endif