the function can be used by write_elf32_notes/write_elf64_notes to write notes
to a buffer. If fd_write_vmcore is used, write_elf32_notes/write_elf64_notes
will write elf notes to vmcore directly. Instead, if buf_write_note is used,
elf notes will be written to opaque->note_buf at first.
Signed-off-by: Qiao Nuohan <qiaonuo...@cn.fujitsu.com>
Reviewed-by: Laszlo Ersek <ler...@redhat.com>
---
dump.c | 19 +++++++++++++++++++
1 files changed, 19 insertions(+), 0 deletions(-)
diff --git a/dump.c b/dump.c
index 238ffa5..2b940bd 100644
--- a/dump.c
+++ b/dump.c
@@ -76,6 +76,9 @@ typedef struct DumpState {
int64_t begin;
int64_t length;
Error **errp;
+
+ uint8_t *note_buf; /* buffer for notes */
+ size_t note_buf_offset; /* the writing place in note_buf */
} DumpState;
static int dump_cleanup(DumpState *s)
@@ -749,6 +752,22 @@ static int write_buffer(int fd, off_t offset, const void
*buf, size_t size)
return 0;
}
+static int buf_write_note(const 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)
{
GuestPhysBlock *block;
--
1.7.1
