libpayload: provide cbfs_file_find_attr()
cbfs_file_find_attr(file, tag) finds the first attribute of file with
the given tag.
Change-Id: I78ee3b996b4b086605244c5d7d57ef7e3fc1db47
Signed-off-by: Patrick Georgi <pgeorgi@chromium.org>
Reviewed-on: http://review.coreboot.org/11678
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
Tested-by: build bot (Jenkins)
diff --git a/payloads/libpayload/libcbfs/cbfs_core.c b/payloads/libpayload/libcbfs/cbfs_core.c
index 5a46af8..153dc8a 100644
--- a/payloads/libpayload/libcbfs/cbfs_core.c
+++ b/payloads/libpayload/libcbfs/cbfs_core.c
@@ -212,12 +212,8 @@
void *file_content = (void *)CBFS_SUBHEADER(file);
- struct cbfs_file_attribute *attr = cbfs_file_first_attr(file);
- while (attr) {
- if (ntohl(attr->tag) == CBFS_FILE_ATTR_TAG_COMPRESSION)
- break;
- attr = cbfs_file_next_attr(file, attr);
- }
+ struct cbfs_file_attribute *attr =
+ cbfs_file_find_attr(file, CBFS_FILE_ATTR_TAG_COMPRESSION);
int compression_algo = CBFS_COMPRESS_NONE;
if (attr) {
@@ -285,6 +281,19 @@
return next;
}
+struct cbfs_file_attribute *cbfs_file_find_attr(struct cbfs_file *file,
+ uint32_t tag)
+{
+ struct cbfs_file_attribute *attr = cbfs_file_first_attr(file);
+ while (attr) {
+ if (ntohl(attr->tag) == tag)
+ break;
+ attr = cbfs_file_next_attr(file, attr);
+ }
+ return attr;
+
+}
+
int cbfs_decompress(int algo, void *src, void *dst, int len)
{
switch (algo) {