diff options
Diffstat (limited to 'include/bloblist.h')
| -rw-r--r-- | include/bloblist.h | 25 |
1 files changed, 23 insertions, 2 deletions
diff --git a/include/bloblist.h b/include/bloblist.h index 9f007c7a94d..29ea5a768a6 100644 --- a/include/bloblist.h +++ b/include/bloblist.h @@ -13,6 +13,8 @@ #ifndef __BLOBLIST_H #define __BLOBLIST_H +#include <mapmem.h> + enum { BLOBLIST_VERSION = 0, BLOBLIST_MAGIC = 0xb00757a3, @@ -59,11 +61,11 @@ enum bloblist_tag_t { * Each bloblist record is aligned to a 16-byte boundary and follows immediately * from the last. * + * @magic: BLOBLIST_MAGIC * @version: BLOBLIST_VERSION * @hdr_size: Size of this header, normally sizeof(struct bloblist_hdr). The * first bloblist_rec starts at this offset from the start of the header * @flags: Space for BLOBLISTF_... flags (none yet) - * @magic: BLOBLIST_MAGIC * @size: Total size of the bloblist (non-zero if valid) including this header. * The bloblist extends for this many bytes from the start of this header. * When adding new records, the bloblist can grow up to this size. @@ -78,10 +80,10 @@ enum bloblist_tag_t { * calculation. */ struct bloblist_hdr { + u32 magic; u32 version; u32 hdr_size; u32 flags; - u32 magic; u32 size; u32 alloced; @@ -112,6 +114,25 @@ struct bloblist_rec { }; /** + * bloblist_check_magic() - return a bloblist if the magic matches + * + * @addr: Address to check + * @return pointer to bloblist, if the magic matches, else NULL + */ +static inline void *bloblist_check_magic(ulong addr) +{ + u32 *ptr; + + if (!addr) + return NULL; + ptr = map_sysmem(addr, 0); + if (*ptr != BLOBLIST_MAGIC) + return NULL; + + return ptr; +} + +/** * bloblist_find() - Find a blob * * Searches the bloblist and returns the blob with the matching tag |