diff options
Diffstat (limited to 'payloads/libpayload/libcbfs/cbfs_core.c')
| -rw-r--r-- | payloads/libpayload/libcbfs/cbfs_core.c | 33 |
1 files changed, 32 insertions, 1 deletions
diff --git a/payloads/libpayload/libcbfs/cbfs_core.c b/payloads/libpayload/libcbfs/cbfs_core.c index 5541f0242d..5a46af8daa 100644 --- a/payloads/libpayload/libcbfs/cbfs_core.c +++ b/payloads/libpayload/libcbfs/cbfs_core.c @@ -210,7 +210,38 @@ void *cbfs_get_file_content(struct cbfs_media *media, const char *name, if (sz) *sz = ntohl(file->len); - return (void *)CBFS_SUBHEADER(file); + 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); + } + + int compression_algo = CBFS_COMPRESS_NONE; + if (attr) { + struct cbfs_file_attr_compression *comp = + (struct cbfs_file_attr_compression *)attr; + compression_algo = ntohl(comp->compression); + DEBUG("File '%s' is compressed (alg=%d)\n", compression_algo); + *sz = ntohl(comp->decompressed_size); + } + + void *dst = malloc(*sz); + if (dst == NULL) + goto err; + + if (!cbfs_decompress(compression_algo, file_content, dst, *sz)) + goto err; + + media->unmap(media, file); + return dst; + +err: + media->unmap(media, file); + free(dst); + return NULL; } struct cbfs_file_attribute *cbfs_file_first_attr(struct cbfs_file *file) |