the function can be used by write_elf32_notes/write_elf64_notes. If
fd_write_vmcore is called by write_elf32_notes/write_elf64_notes, elf notes will
be written to vmcore by fd_write_vmcore directly. Instead, buf_write_note will
write elf notes to opaque->note_buf. And the elf notes stored in
opaque->note_buf will be used later.
Signed-off-by: Qiao Nuohan <qiaonuo...@cn.fujitsu.com>
Reviewed-by: Zhang Xiaohe <zhan...@cn.fujitsu.com>
---
dump.c | 19 +++++++++++++++++++
1 files changed, 19 insertions(+), 0 deletions(-)
diff --git a/dump.c b/dump.c
index 6f14b8d..d7b3624 100644
--- a/dump.c
+++ b/dump.c
@@ -75,6 +75,9 @@ typedef struct DumpState {
int64_t begin;
int64_t length;
Error **errp;
+
+ void *note_buf;
+ size_t note_buf_offset;
} DumpState;
static int dump_cleanup(DumpState *s)
@@ -742,6 +745,22 @@ static int write_buffer(int fd, bool flag_flatten, off_t
offset, void *buf,
return 0;
}
+static int buf_write_note(void *buf, size_t size, void *opaque)
+{
+ DumpState *s = opaque;
+
+ /* note_buf is not enough */
+ if (s->note_buf_offset + size > s->note_size) {
+ return -1;
+ }
+
+ memcpy(s->note_buf + s->note_buf_offset, buf, size);
+
+ s->note_buf_offset += size;
+
+ return 0;
+}
+
static ram_addr_t get_start_block(DumpState *s)
{
RAMBlock *block;
--
1.7.1
