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-rw-r--r--src/include/cbfs.h1
-rw-r--r--src/lib/cbfs.c8
-rw-r--r--src/lib/cbfs_core.c8
3 files changed, 13 insertions, 4 deletions
diff --git a/src/include/cbfs.h b/src/include/cbfs.h
index 9aa2c969ba..2db3c94f90 100644
--- a/src/include/cbfs.h
+++ b/src/include/cbfs.h
@@ -52,6 +52,7 @@
#include <cbfs_core.h>
+int init_backing_media(struct cbfs_media **media, struct cbfs_media *backing);
void *cbfs_load_optionrom(struct cbfs_media *media, uint16_t vendor,
uint16_t device, void * dest);
void *cbfs_load_stage(struct cbfs_media *media, const char *name);
diff --git a/src/lib/cbfs.c b/src/lib/cbfs.c
index 54d159fc86..977141236c 100644
--- a/src/lib/cbfs.c
+++ b/src/lib/cbfs.c
@@ -76,6 +76,10 @@ void *cbfs_load_optionrom(struct cbfs_media *media, uint16_t vendor,
void *cbfs_load_stage_by_offset(struct cbfs_media *media, ssize_t offset)
{
struct cbfs_stage stage;
+ struct cbfs_media backing_store;
+
+ if (init_backing_media(&media, &backing_store))
+ return (void *)-1;
if (cbfs_read(media, &stage, offset, sizeof(stage)) != sizeof(stage)) {
ERROR("ERROR: failed to read stage header\n");
@@ -116,6 +120,10 @@ void *cbfs_load_stage(struct cbfs_media *media, const char *name)
{
struct cbfs_file file;
ssize_t offset;
+ struct cbfs_media backing_store;
+
+ if (init_backing_media(&media, &backing_store))
+ return (void *)-1;
offset = cbfs_locate_file(media, &file, name);
if (offset < 0 || file.type != CBFS_TYPE_STAGE)
diff --git a/src/lib/cbfs_core.c b/src/lib/cbfs_core.c
index c28a8658d0..acd434fb48 100644
--- a/src/lib/cbfs_core.c
+++ b/src/lib/cbfs_core.c
@@ -94,7 +94,7 @@ const struct cbfs_header *cbfs_get_header(struct cbfs_media *media)
}
-static int init_media(struct cbfs_media **media, struct cbfs_media *backing)
+int init_backing_media(struct cbfs_media **media, struct cbfs_media *backing)
{
if (*media == CBFS_DEFAULT_MEDIA) {
*media = backing;
@@ -115,7 +115,7 @@ ssize_t cbfs_locate_file(struct cbfs_media *media, struct cbfs_file *file,
const struct cbfs_header *header;
struct cbfs_media default_media;
- if (init_media(&media, &default_media))
+ if (init_backing_media(&media, &default_media))
return -1;
if (CBFS_HEADER_INVALID_ADDRESS == (header = cbfs_get_header(media)))
@@ -200,7 +200,7 @@ size_t cbfs_read(struct cbfs_media *media, void *dest, size_t offset,
struct cbfs_media default_media;
size_t nread;
- if (init_media(&media, &default_media))
+ if (init_backing_media(&media, &default_media))
return 0;
media->open(media);
@@ -216,7 +216,7 @@ struct cbfs_file *cbfs_get_file(struct cbfs_media *media, const char *name)
struct cbfs_file file, *file_ptr;
ssize_t offset;
- if (init_media(&media, &default_media))
+ if (init_backing_media(&media, &default_media))
return NULL;
offset = cbfs_locate_file(media, &file, name);