packaging/ostree
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core: Split pack files into data/metadata

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This will allow us to download metadata first (separately), and in the
future we can have an improved metadata pack format that compresses
heavily.
This commit is contained in:
Colin Walters committed 2012-04-11 22:04:05 -04:00
1 parent 11c0fbc738
commit 5a82b141ae
8 files changed
+922 -555
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src/libostree/ostree-core.h
+31 -10
View File
@@ -93,34 +93,44 @@ typedef enum {
/* Pack super index
* s - OSTv0SUPERPACKINDEX
* a{sv} - Metadata
* a(ayay) - (pack file checksum, bloom filter)
* a(ayay) - metadata packs (pack file checksum, bloom filter)
* a(ayay) - data packs (pack file checksum, bloom filter)
*/
#define OSTREE_PACK_SUPER_INDEX_VARIANT_FORMAT G_VARIANT_TYPE ("(sa{sv}a(ayay))")
#define OSTREE_PACK_SUPER_INDEX_VARIANT_FORMAT G_VARIANT_TYPE ("(sa{sv}a(ayay)a(ayay))")
/* Pack index
* s - OSTv0PACKINDEX
* a{sv} - Metadata
* a(uayt) - (objtype, checksum, offset into packfile)
* a(yayt) - (objtype, checksum, offset into packfile)
*/
#define OSTREE_PACK_INDEX_VARIANT_FORMAT G_VARIANT_TYPE ("(sa{sv}a(uayt))")
#define OSTREE_PACK_INDEX_VARIANT_FORMAT G_VARIANT_TYPE ("(sa{sv}a(yayt))")
typedef enum {
OSTREE_PACK_FILE_ENTRY_FLAG_NONE = 0,
OSTREE_PACK_FILE_ENTRY_FLAG_GZIP = (1 << 0)
} OstreePackFileEntryFlag;
/* Pack files
* s - OSTv0PACKFILE
/* Data Pack files
* s - OSTv0PACKDATAFILE
* a{sv} - Metadata
* t - number of entries
*
* Repeating pair of:
* <padding to alignment of 8>
* ( uyayay ) - objtype, flags, checksum, data
* ( yyayay ) - objtype, flags, checksum, data
*/
#define OSTREE_PACK_FILE_VARIANT_FORMAT G_VARIANT_TYPE ("(sa{sv}t)")
#define OSTREE_PACK_DATA_FILE_VARIANT_FORMAT G_VARIANT_TYPE ("(yyayay)")
#define OSTREE_PACK_FILE_CONTENT_VARIANT_FORMAT G_VARIANT_TYPE ("(uyayay)")
/* Meta Pack files
* s - OSTv0PACKMETAFILE
* a{sv} - Metadata
* t - number of entries
*
* Repeating pair of:
* <padding to alignment of 8>
* ( yayv ) - objtype, checksum, data
*/
#define OSTREE_PACK_META_FILE_VARIANT_FORMAT G_VARIANT_TYPE ("(yayv)")
gboolean ostree_validate_checksum_string (const char *sha256,
GError **error);
@@ -162,6 +172,16 @@ void ostree_object_from_string (const char *str,
char *ostree_get_relative_object_path (const char *checksum,
OstreeObjectType type);
char *ostree_get_pack_index_name (gboolean is_meta,
const char *checksum);
char *ostree_get_pack_data_name (gboolean is_meta,
const char *checksum);
char *ostree_get_relative_pack_index_path (gboolean is_meta,
const char *checksum);
char *ostree_get_relative_pack_data_path (gboolean is_meta,
const char *checksum);
gboolean ostree_get_xattrs_for_file (GFile *f,
GVariant **out_xattrs,
GCancellable *cancellable,
@@ -260,6 +280,7 @@ gboolean ostree_read_pack_entry_raw (guchar *pack_data,
guint64 pack_len,
guint64 object_offset,
gboolean trusted,
gboolean is_meta,
GVariant **out_entry,
GCancellable *cancellable,
GError **error);
@@ -280,7 +301,7 @@ gboolean ostree_pack_index_search (GVariant *index,
/** VALIDATION **/
gboolean ostree_validate_structureof_objtype (guint32 objtype,
gboolean ostree_validate_structureof_objtype (guchar objtype,
GError **error);
gboolean ostree_validate_structureof_csum_v (GVariant *checksum,