diff options
Diffstat (limited to 'util/cbfstool/cbfs_image.c')
| -rw-r--r-- | util/cbfstool/cbfs_image.c | 38 |
1 files changed, 38 insertions, 0 deletions
diff --git a/util/cbfstool/cbfs_image.c b/util/cbfstool/cbfs_image.c index 1f4b49a48d..92815f5f06 100644 --- a/util/cbfstool/cbfs_image.c +++ b/util/cbfstool/cbfs_image.c @@ -442,6 +442,44 @@ int cbfs_copy_instance(struct cbfs_image *image, struct buffer *dst) return 0; } +int cbfs_expand_to_region(struct buffer *region) +{ + if (buffer_get(region) == NULL) + return 1; + + struct cbfs_image image; + memset(&image, 0, sizeof(image)); + if (cbfs_image_from_buffer(&image, region, 0)) { + ERROR("reading CBFS failed!\n"); + return 1; + } + + uint32_t region_sz = buffer_size(region); + + struct cbfs_file *entry; + for (entry = buffer_get(region); + cbfs_is_valid_entry(&image, entry); + entry = cbfs_find_next_entry(&image, entry)) { + /* just iterate through */ + } + + /* entry now points to the first aligned address after the last valid + * file header. That's either outside the image or exactly the place + * where we need to create a new file. + */ + int last_entry_size = region_sz - ((void *)entry - buffer_get(region)) + - cbfs_calculate_file_header_size("") - sizeof(int32_t); + + if (last_entry_size > 0) { + cbfs_create_empty_entry(entry, CBFS_COMPONENT_NULL, + last_entry_size, ""); + /* If the last entry was an empty file, merge them. */ + cbfs_walk(&image, cbfs_merge_empty_entry, NULL); + } + + return 0; +} + static size_t cbfs_file_entry_metadata_size(const struct cbfs_file *f) { return ntohl(f->offset); |