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core: INCOMPATIBLE CHANGE: Split archive files in two parts (meta and content)

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This will allow us to have hardlink checkouts of archives.  A key use
case here is an archive repo of an OS (with root-owned files etc.)
where we want to do builds in a user tree.

A positive side effect of doing things this way is that now the SHA256
checksums for a given file should be identical regardless of whether
it's stored in an archive or bare repository.
This commit is contained in:
Colin Walters committed 2011-12-15 13:14:06 -05:00
1 parent ecbffd4915
commit 9a71ab187d
10 files changed
+806 -678
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src/libostree/ostree-core.h
+17 -47
View File
@@ -33,16 +33,17 @@ G_BEGIN_DECLS
typedef enum {
OSTREE_OBJECT_TYPE_RAW_FILE = 1, /* .raw */
OSTREE_OBJECT_TYPE_ARCHIVED_FILE = 2, /* .archive */
OSTREE_OBJECT_TYPE_DIR_TREE = 3, /* .dirtree */
OSTREE_OBJECT_TYPE_DIR_META = 4, /* .dirmeta */
OSTREE_OBJECT_TYPE_COMMIT = 5 /* .commit */
OSTREE_OBJECT_TYPE_ARCHIVED_FILE_CONTENT = 2, /* .archive-content */
OSTREE_OBJECT_TYPE_ARCHIVED_FILE_META = 3, /* .archive-meta */
OSTREE_OBJECT_TYPE_DIR_TREE = 4, /* .dirtree */
OSTREE_OBJECT_TYPE_DIR_META = 5, /* .dirmeta */
OSTREE_OBJECT_TYPE_COMMIT = 6 /* .commit */
} OstreeObjectType;
#define OSTREE_OBJECT_TYPE_IS_META(t) (t >= 3 && t <= 5)
#define OSTREE_OBJECT_TYPE_IS_META(t) (t >= 3 && t <= 6)
#define OSTREE_OBJECT_TYPE_LAST OSTREE_OBJECT_TYPE_COMMIT
#define OSTREE_SERIALIZED_VARIANT_FORMAT "(uv)"
#define OSTREE_SERIALIZED_VARIANT_FORMAT G_VARIANT_TYPE("(uv)")
/*
* xattr objects:
@@ -116,10 +117,10 @@ GVariant *ostree_wrap_metadata_variant (OstreeObjectType type, GVariant *metadat
gboolean ostree_set_xattrs (GFile *f, GVariant *xattrs,
GCancellable *cancellable, GError **error);
gboolean ostree_parse_metadata_file (GFile *file,
OstreeObjectType *out_type,
GVariant **out_variant,
GError **error);
gboolean ostree_map_metadata_file (GFile *file,
OstreeObjectType expected_type,
GVariant **out_variant,
GError **error);
gboolean ostree_checksum_file_from_input (GFileInfo *file_info,
GVariant *xattrs,
@@ -150,32 +151,6 @@ gboolean ostree_checksum_file_async_finish (GFile *f,
GVariant *ostree_create_directory_metadata (GFileInfo *dir_info,
GVariant *xattrs);
/* Archived files:
*
* guint32 metadata_length [metadata gvariant] [content]
*
* metadata variant:
* u - Version
* u - uid
* u - gid
* u - mode
* a(ayay) - xattrs
* t - content length
*
* And then following the end of the variant is the content. If
* symlink, then this is the target; if device, then device ID as
* network byte order uint32.
*/
#define OSTREE_ARCHIVED_FILE_VARIANT_FORMAT "(uuuua(ayay)t)"
gboolean ostree_archive_file_for_input (GOutputStream *output,
GFileInfo *finfo,
GInputStream *input,
GVariant *xattrs,
GChecksum **out_checksum,
GCancellable *cancellable,
GError **error);
gboolean ostree_create_file_from_input (GFile *file,
GFileInfo *finfo,
GVariant *xattrs,
@@ -205,18 +180,13 @@ gboolean ostree_create_temp_regular_file (GFile *dir,
GCancellable *cancellable,
GError **error);
gboolean ostree_parse_archived_file (GFile *file,
GFileInfo **out_file_info,
GVariant **out_xattrs,
GInputStream **out_content,
GCancellable *cancellable,
GError **error);
GVariant *ostree_create_archive_file_metadata (GFileInfo *file_info,
GVariant *xattrs);
gboolean ostree_unpack_object (GFile *file,
OstreeObjectType objtype,
GFile *dest,
GChecksum **out_checksum,
GError **error);
gboolean ostree_parse_archived_file_meta (GVariant *data,
GFileInfo **out_file_info,
GVariant **out_xattrs,
GError **error);
#endif /* _OSTREE_REPO */