get_pfn_offset is used for generating incomplete kdump core.
When enospac occurs in writing the buf cd_page, it can be used to
get how many pages have been written.
Signed-off-by: Zhou Wenjian <zhouwj-fnst at cn.fujitsu.com>
---
makedumpfile.c | 24 ++++++++++++++++++++++++
1 file changed, 24 insertions(+)
diff --git a/makedumpfile.c b/makedumpfile.c
index 5a53246..e8b52f4 100644
--- a/makedumpfile.c
+++ b/makedumpfile.c
@@ -6300,6 +6300,30 @@ write_cd_buf(struct cache_data *cd)
}
int
+get_pfn_offset(void *buf, struct cache_data *cd_page){
+ int size, file_end, offset;
+ page_desc_t *pd;
+
+ size = 0;
+ offset = 0;
+ file_end = lseek(cd_page->fd, 0, SEEK_END);
+ if (file_end < 0)
+ ERRMSG("Can't seek end of the dump file(%s).\n", cd_page->file_name);
+
+ while (TRUE) {
+ pd = (page_desc_t *)buf;
+ size += pd->size;
+ if (size > file_end - cd_page->offset)
+ break;
+
+ offset++;
+ buf += sizeof(page_desc_t);
+ }
+
+ return offset;
+}
+
+int
write_kdump_pages_cyclic(struct cache_data *cd_header, struct cache_data *cd_page,
struct page_desc *pd_zero, off_t *offset_data, struct cycle *cycle)
{
--
1.8.3.1
