diff options
Diffstat (limited to 'src/commonlib/bsd/include')
| -rw-r--r-- | src/commonlib/bsd/include/commonlib/bsd/cb_err.h | 1 | ||||
| -rw-r--r-- | src/commonlib/bsd/include/commonlib/bsd/cbfs_private.h | 21 |
2 files changed, 22 insertions, 0 deletions
diff --git a/src/commonlib/bsd/include/commonlib/bsd/cb_err.h b/src/commonlib/bsd/include/commonlib/bsd/cb_err.h index e5aa852617..b61b956524 100644 --- a/src/commonlib/bsd/include/commonlib/bsd/cb_err.h +++ b/src/commonlib/bsd/include/commonlib/bsd/cb_err.h @@ -39,6 +39,7 @@ enum cb_err { CB_CBFS_IO = -400, /**< Underlying I/O error */ CB_CBFS_NOT_FOUND = -401, /**< File not found in directory */ CB_CBFS_HASH_MISMATCH = -402, /**< Master hash validation failed */ + CB_CBFS_CACHE_FULL = -403, /**< Metadata cache overflowed */ }; /* Don't typedef the enum directly, so the size is unambiguous for serialization. */ diff --git a/src/commonlib/bsd/include/commonlib/bsd/cbfs_private.h b/src/commonlib/bsd/include/commonlib/bsd/cbfs_private.h index aaee62f4c3..64dcf9f5ba 100644 --- a/src/commonlib/bsd/include/commonlib/bsd/cbfs_private.h +++ b/src/commonlib/bsd/include/commonlib/bsd/cbfs_private.h @@ -113,4 +113,25 @@ cb_err_t cbfs_copy_fill_metadata(union cbfs_mdata *dst, const union cbfs_mdata * cb_err_t cbfs_lookup(cbfs_dev_t dev, const char *name, union cbfs_mdata *mdata_out, size_t *data_offset_out, struct vb2_hash *metadata_hash); +/* Both base address and size of CBFS mcaches must be aligned to this value! */ +#define CBFS_MCACHE_ALIGNMENT sizeof(uint32_t) /* Largest data type used in CBFS */ + +/* Build an in-memory CBFS metadata cache out of the CBFS on |dev| into a |mcache_size| bytes + * memory area at |mcache|. Also verify |metadata_hash| unless it is NULL. If this returns + * CB_CBFS_CACHE_FULL, the mcache is still valid and can be used, but lookups may return + * CB_CBFS_CACHE_FULL for files that didn't fit to indicate that the caller needs to fall back + * to cbfs_lookup(). */ +cb_err_t cbfs_mcache_build(cbfs_dev_t dev, void *mcache, size_t mcache_size, + struct vb2_hash *metadata_hash); + +/* + * Find a file named |name| in a CBFS metadata cache and copy its metadata into |mdata_out|. + * Pass out offset to the file data (on the original CBFS device used for cbfs_mcache_build()). + */ +cb_err_t cbfs_mcache_lookup(const void *mcache, size_t mcache_size, const char *name, + union cbfs_mdata *mdata_out, size_t *data_offset_out); + +/* Returns the amount of bytes actually used by the CBFS metadata cache in |mcache|. */ +size_t cbfs_mcache_real_size(const void *mcache, size_t mcache_size); + #endif /* _COMMONLIB_BSD_CBFS_PRIVATE_H_ */ |