[Crash-utility] [PATCH 1/2] qemu: parse 'vm_configuration' section

[Pankaj Gupta]

 Teach crash to parse 'QEMU_VM_CONFIGURATION' section. This
 section is added by migration code to save VM running state.

Signed-off-by: Pankaj Gupta <pagupta at redhat.com>
---
 qemu-load.c | 16 ++++++++++++++++
 qemu-load.h |  3 ++-
 2 files changed, 18 insertions(+), 1 deletion(-)

diff --git a/qemu-load.c b/qemu-load.c
index 8b4372e..7ee58a3 100644
--- a/qemu-load.c
+++ b/qemu-load.c
@@ -208,6 +208,16 @@ get_string (FILE *fp, char *name)
 	name[sz] = 0;
 	return sz;
 }
+static int
+get_string_len (FILE *fp, char *name, uint32_t sz)
+{
+	size_t items ATTRIBUTE_UNUSED;
+	if (sz == EOF)
+		return -1;
+	items = fread (name, sz, 1, fp);
+	name[sz] = 0;
+	return sz;
+}
 
 static void
 ram_read_blocks (FILE *fp, uint64_t size)
@@ -924,6 +934,7 @@ qemu_load (const struct qemu_device_loader *devices, uint32_t required_features,
 	struct qemu_device_list *result = NULL;
 	struct qemu_device *last = NULL;;
 	size_t items ATTRIBUTE_UNUSED;
+	char name[257];
 
 	switch (get_be32 (fp)) {
 	case QEMU_VM_FILE_MAGIC:
@@ -961,6 +972,11 @@ qemu_load (const struct qemu_device_loader *devices, uint32_t required_features,
 			break;
 		if (sec == QEMU_VM_EOF)
 			break;
+		if (sec == QEMU_VM_CONFIGURATION) {
+			uint32_t len = get_be32 (fp);
+			get_string_len (fp, name, len);
+			continue;
+                }
 
 		d = device_get (devices, result, sec, fp);
 		if (!d)
diff --git a/qemu-load.h b/qemu-load.h
index e52b068..d5b2078 100644
--- a/qemu-load.h
+++ b/qemu-load.h
@@ -29,7 +29,8 @@ enum qemu_save_section {
   QEMU_VM_SECTION_PART,
   QEMU_VM_SECTION_END,
   QEMU_VM_SECTION_FULL,
-  QEMU_VM_SUBSECTION
+  QEMU_VM_SUBSECTION,
+  QEMU_VM_CONFIGURATION = 0x07
 };
 
 enum qemu_features {
-- 
1.9.3