diff options
Diffstat (limited to 'cache.h')
| -rw-r--r-- | cache.h | 73 |
1 files changed, 69 insertions, 4 deletions
@@ -993,16 +993,65 @@ void reset_shared_repository(void); extern int read_replace_refs; extern char *git_replace_ref_base; +/* + * These values are used to help identify parts of a repository to fsync. + * FSYNC_COMPONENT_NONE identifies data that will not be a persistent part of the + * repository and so shouldn't be fsynced. + */ +enum fsync_component { + FSYNC_COMPONENT_NONE, + FSYNC_COMPONENT_LOOSE_OBJECT = 1 << 0, + FSYNC_COMPONENT_PACK = 1 << 1, + FSYNC_COMPONENT_PACK_METADATA = 1 << 2, + FSYNC_COMPONENT_COMMIT_GRAPH = 1 << 3, + FSYNC_COMPONENT_INDEX = 1 << 4, + FSYNC_COMPONENT_REFERENCE = 1 << 5, +}; + +#define FSYNC_COMPONENTS_OBJECTS (FSYNC_COMPONENT_LOOSE_OBJECT | \ + FSYNC_COMPONENT_PACK) + +#define FSYNC_COMPONENTS_DERIVED_METADATA (FSYNC_COMPONENT_PACK_METADATA | \ + FSYNC_COMPONENT_COMMIT_GRAPH) + +#define FSYNC_COMPONENTS_DEFAULT ((FSYNC_COMPONENTS_OBJECTS | \ + FSYNC_COMPONENTS_DERIVED_METADATA) & \ + ~FSYNC_COMPONENT_LOOSE_OBJECT) + +#define FSYNC_COMPONENTS_COMMITTED (FSYNC_COMPONENTS_OBJECTS | \ + FSYNC_COMPONENT_REFERENCE) + +#define FSYNC_COMPONENTS_ADDED (FSYNC_COMPONENTS_COMMITTED | \ + FSYNC_COMPONENT_INDEX) + +#define FSYNC_COMPONENTS_ALL (FSYNC_COMPONENT_LOOSE_OBJECT | \ + FSYNC_COMPONENT_PACK | \ + FSYNC_COMPONENT_PACK_METADATA | \ + FSYNC_COMPONENT_COMMIT_GRAPH | \ + FSYNC_COMPONENT_INDEX | \ + FSYNC_COMPONENT_REFERENCE) + +/* + * A bitmask indicating which components of the repo should be fsynced. + */ +extern enum fsync_component fsync_components; extern int fsync_object_files; extern int use_fsync; + +enum fsync_method { + FSYNC_METHOD_FSYNC, + FSYNC_METHOD_WRITEOUT_ONLY +}; + +extern enum fsync_method fsync_method; extern int core_preload_index; extern int precomposed_unicode; extern int protect_hfs; extern int protect_ntfs; -extern const char *core_fsmonitor; extern int core_apply_sparse_checkout; extern int core_sparse_checkout_cone; +extern int sparse_expect_files_outside_of_patterns; /* * Returns the boolean value of $GIT_OPTIONAL_LOCKS (or the default value). @@ -1319,9 +1368,23 @@ enum unpack_loose_header_result unpack_loose_header(git_zstream *stream, struct object_info; int parse_loose_header(const char *hdr, struct object_info *oi); +/** + * With in-core object data in "buf", rehash it to make sure the + * object name actually matches "oid" to detect object corruption. + * + * A negative value indicates an error, usually that the OID is not + * what we expected, but it might also indicate another error. + */ int check_object_signature(struct repository *r, const struct object_id *oid, - void *buf, unsigned long size, const char *type, - struct object_id *real_oidp); + void *map, unsigned long size, + enum object_type type); + +/** + * A streaming version of check_object_signature(). + * Try reading the object named with "oid" using + * the streaming interface and rehash it to do the same. + */ +int stream_object_signature(struct repository *r, const struct object_id *oid); int finalize_object_file(const char *tmpfile, const char *filename); @@ -1548,7 +1611,7 @@ int cache_name_stage_compare(const char *name1, int len1, int stage1, const char void *read_object_with_reference(struct repository *r, const struct object_id *oid, - const char *required_type, + enum object_type required_type, unsigned long *size, struct object_id *oid_ret); @@ -1700,6 +1763,8 @@ int copy_file_with_time(const char *dst, const char *src, int mode); void write_or_die(int fd, const void *buf, size_t count); void fsync_or_die(int fd, const char *); +int fsync_component(enum fsync_component component, int fd); +void fsync_component_or_die(enum fsync_component component, int fd, const char *msg); ssize_t read_in_full(int fd, void *buf, size_t count); ssize_t write_in_full(int fd, const void *buf, size_t count); |