bloblist: Add a new function to add or check size
A common check is to see if a blob is present, create it if not and make
sure that the size is large enough. Add a function to handle this.
Signed-off-by: Simon Glass <sjg@chromium.org>
diff --git a/common/bloblist.c b/common/bloblist.c
index ccf5e4b..3599ffa 100644
--- a/common/bloblist.c
+++ b/common/bloblist.c
@@ -85,8 +85,10 @@
rec = bloblist_findrec(tag);
if (rec) {
- if (size && size != rec->size)
+ if (size && size != rec->size) {
+ *recp = rec;
return -ESPIPE;
+ }
} else {
int ret;
@@ -145,6 +147,21 @@
return (void *)rec + rec->hdr_size;
}
+int bloblist_ensure_size_ret(uint tag, int *sizep, void **blobp)
+{
+ struct bloblist_rec *rec;
+ int ret;
+
+ ret = bloblist_ensurerec(tag, &rec, *sizep);
+ if (ret == -ESPIPE)
+ *sizep = rec->size;
+ else if (ret)
+ return ret;
+ *blobp = (void *)rec + rec->hdr_size;
+
+ return 0;
+}
+
static u32 bloblist_calc_chksum(struct bloblist_hdr *hdr)
{
struct bloblist_rec *rec;