diff options
Diffstat (limited to 'payloads/libpayload/include')
| -rw-r--r-- | payloads/libpayload/include/cbfs_core.h | 26 |
1 files changed, 25 insertions, 1 deletions
diff --git a/payloads/libpayload/include/cbfs_core.h b/payloads/libpayload/include/cbfs_core.h index a95cef7a3d..a2ee74459b 100644 --- a/payloads/libpayload/include/cbfs_core.h +++ b/payloads/libpayload/include/cbfs_core.h @@ -132,10 +132,34 @@ struct cbfs_file { char magic[8]; uint32_t len; uint32_t type; - uint32_t checksum; + uint32_t attributes_offset; uint32_t offset; + char filename[]; } __attribute__((packed)); +/* Depending on how the header was initialized, it may be backed with 0x00 or + * 0xff. Support both. */ +#define CBFS_FILE_ATTR_TAG_UNUSED 0 +#define CBFS_FILE_ATTR_TAG_UNUSED2 0xffffffff + +/* The common fields of extended cbfs file attributes. + Attributes are expected to start with tag/len, then append their + specific fields. */ +struct cbfs_file_attribute { + uint32_t tag; + /* len covers the whole structure, incl. tag and len */ + uint32_t len; + uint8_t data[0]; +} __attribute__((packed)); + +/* Given a cbfs_file, return the first file attribute, or NULL. */ +struct cbfs_file_attribute *cbfs_file_first_attr(struct cbfs_file *file); + +/* Given a cbfs_file and a cbfs_file_attribute, return the attribute that + * follows it, or NULL. */ +struct cbfs_file_attribute *cbfs_file_next_attr(struct cbfs_file *file, + struct cbfs_file_attribute *attr); + /*** Component sub-headers ***/ /* Following are component sub-headers for the "standard" |