diff options
| -rw-r--r-- | libstore/store.h | 24 |
1 files changed, 18 insertions, 6 deletions
diff --git a/libstore/store.h b/libstore/store.h index 45bb97fb..08528709 100644 --- a/libstore/store.h +++ b/libstore/store.h @@ -29,6 +29,12 @@ #include <device/device.h> #include <hurd/hurd_types.h> +/* A portion of a store. If START == -1, it's a hole. */ +struct store_run +{ + off_t start, length; +}; + struct store { /* If this store was created using store_create, the file from which we got @@ -40,7 +46,7 @@ struct store /* Address ranges in the underlying storage which make up our contiguous address space. In units of BLOCK_SIZE, below. */ - off_t *runs; /* Malloced */ + struct store_run *runs; /* Malloced */ size_t num_runs; /* Length of RUNS. */ /* Maximum valid offset. This is the same as SIZE, but in blocks. */ @@ -131,7 +137,7 @@ error_t store_device_create (device_t device, struct store **store); /* Like store_device_create, but doesn't query the device for information. */ error_t _store_device_create (device_t device, size_t block_size, - const off_t *runs, size_t num_runs, + const struct store_run *runs, size_t num_runs, struct store **store); /* Return a new store in STORE referring to the file FILE. Unlike @@ -142,7 +148,7 @@ error_t store_file_create (file_t file, struct store **store); /* Like store_file_create, but doesn't query the file for information. */ error_t _store_file_create (file_t file, size_t block_size, - const off_t *runs, size_t num_runs, + const struct store_run *runs, size_t num_runs, struct store **store); /* Return a new store in STORE that interleaves all the stores in STRIPES @@ -167,10 +173,16 @@ void store_free (struct store *store); struct store * _make_store (enum file_storage_class class, struct store_meths *meths, mach_port_t port, size_t block_size, - const off_t *runs, size_t num_runs, off_t end); + const struct store_run *runs, size_t num_runs, off_t end); /* Set STORE's current runs list to (a copy of) RUNS and NUM_RUNS. */ -error_t store_set_runs (struct store *store, const off_t *runs, size_t num_runs); +error_t store_set_runs (struct store *store, + const struct store_run *runs, size_t num_runs); + +/* Set STORE's current children to (a copy of) CHILDREN and NUM_CHILDREN + (note that just the vector CHILDREN is copied, not the actual children). */ +error_t store_set_children (struct store *store, + struct store *const *children, size_t num_children); /* Sets the name associated with STORE to a copy of NAME. */ error_t store_set_name (struct store *store, const char *name); @@ -280,7 +292,7 @@ error_t store_default_leaf_encode (struct store *store, struct store_enc *enc); error_t store_default_leaf_decode (struct store_enc *enc, error_t (*create)(mach_port_t port, size_t block_size, - const off_t *runs, + const struct store_run *runs, size_t num_runs, struct store **store), struct store **store); |