| #ifndef CACHE_H |
| #define CACHE_H |
| |
| #include "git-compat-util.h" |
| #include "strbuf.h" |
| #include "hashmap.h" |
| #include "list.h" |
| #include "advice.h" |
| #include "gettext.h" |
| #include "convert.h" |
| #include "trace.h" |
| #include "trace2.h" |
| #include "string-list.h" |
| #include "pack-revindex.h" |
| #include "hash.h" |
| #include "path.h" |
| #include "sha1-array.h" |
| #include "repository.h" |
| #include "mem-pool.h" |
| |
| #include <zlib.h> |
| typedef struct git_zstream { |
| z_stream z; |
| unsigned long avail_in; |
| unsigned long avail_out; |
| unsigned long total_in; |
| unsigned long total_out; |
| unsigned char *next_in; |
| unsigned char *next_out; |
| } git_zstream; |
| |
| void git_inflate_init(git_zstream *); |
| void git_inflate_init_gzip_only(git_zstream *); |
| void git_inflate_end(git_zstream *); |
| int git_inflate(git_zstream *, int flush); |
| |
| void git_deflate_init(git_zstream *, int level); |
| void git_deflate_init_gzip(git_zstream *, int level); |
| void git_deflate_init_raw(git_zstream *, int level); |
| void git_deflate_end(git_zstream *); |
| int git_deflate_abort(git_zstream *); |
| int git_deflate_end_gently(git_zstream *); |
| int git_deflate(git_zstream *, int flush); |
| unsigned long git_deflate_bound(git_zstream *, unsigned long); |
| |
| /* The length in bytes and in hex digits of an object name (SHA-1 value). */ |
| #define GIT_SHA1_RAWSZ 20 |
| #define GIT_SHA1_HEXSZ (2 * GIT_SHA1_RAWSZ) |
| /* The block size of SHA-1. */ |
| #define GIT_SHA1_BLKSZ 64 |
| |
| /* The length in bytes and in hex digits of an object name (SHA-256 value). */ |
| #define GIT_SHA256_RAWSZ 32 |
| #define GIT_SHA256_HEXSZ (2 * GIT_SHA256_RAWSZ) |
| /* The block size of SHA-256. */ |
| #define GIT_SHA256_BLKSZ 64 |
| |
| /* The length in byte and in hex digits of the largest possible hash value. */ |
| #define GIT_MAX_RAWSZ GIT_SHA256_RAWSZ |
| #define GIT_MAX_HEXSZ GIT_SHA256_HEXSZ |
| /* The largest possible block size for any supported hash. */ |
| #define GIT_MAX_BLKSZ GIT_SHA256_BLKSZ |
| |
| struct object_id { |
| unsigned char hash[GIT_MAX_RAWSZ]; |
| }; |
| |
| #define the_hash_algo the_repository->hash_algo |
| |
| #if defined(DT_UNKNOWN) && !defined(NO_D_TYPE_IN_DIRENT) |
| #define DTYPE(de) ((de)->d_type) |
| #else |
| #undef DT_UNKNOWN |
| #undef DT_DIR |
| #undef DT_REG |
| #undef DT_LNK |
| #define DT_UNKNOWN 0 |
| #define DT_DIR 1 |
| #define DT_REG 2 |
| #define DT_LNK 3 |
| #define DTYPE(de) DT_UNKNOWN |
| #endif |
| |
| /* unknown mode (impossible combination S_IFIFO|S_IFCHR) */ |
| #define S_IFINVALID 0030000 |
| |
| /* |
| * A "directory link" is a link to another git directory. |
| * |
| * The value 0160000 is not normally a valid mode, and |
| * also just happens to be S_IFDIR + S_IFLNK |
| */ |
| #define S_IFGITLINK 0160000 |
| #define S_ISGITLINK(m) (((m) & S_IFMT) == S_IFGITLINK) |
| |
| /* |
| * Some mode bits are also used internally for computations. |
| * |
| * They *must* not overlap with any valid modes, and they *must* not be emitted |
| * to outside world - i.e. appear on disk or network. In other words, it's just |
| * temporary fields, which we internally use, but they have to stay in-house. |
| * |
| * ( such approach is valid, as standard S_IF* fits into 16 bits, and in Git |
| * codebase mode is `unsigned int` which is assumed to be at least 32 bits ) |
| */ |
| |
| /* used internally in tree-diff */ |
| #define S_DIFFTREE_IFXMIN_NEQ 0x80000000 |
| |
| |
| /* |
| * Intensive research over the course of many years has shown that |
| * port 9418 is totally unused by anything else. Or |
| * |
| * Your search - "port 9418" - did not match any documents. |
| * |
| * as www.google.com puts it. |
| * |
| * This port has been properly assigned for git use by IANA: |
| * git (Assigned-9418) [I06-050728-0001]. |
| * |
| * git 9418/tcp git pack transfer service |
| * git 9418/udp git pack transfer service |
| * |
| * with Linus Torvalds <torvalds@osdl.org> as the point of |
| * contact. September 2005. |
| * |
| * See http://www.iana.org/assignments/port-numbers |
| */ |
| #define DEFAULT_GIT_PORT 9418 |
| |
| /* |
| * Basic data structures for the directory cache |
| */ |
| |
| #define CACHE_SIGNATURE 0x44495243 /* "DIRC" */ |
| struct cache_header { |
| uint32_t hdr_signature; |
| uint32_t hdr_version; |
| uint32_t hdr_entries; |
| }; |
| |
| #define INDEX_FORMAT_LB 2 |
| #define INDEX_FORMAT_UB 4 |
| |
| /* |
| * The "cache_time" is just the low 32 bits of the |
| * time. It doesn't matter if it overflows - we only |
| * check it for equality in the 32 bits we save. |
| */ |
| struct cache_time { |
| uint32_t sec; |
| uint32_t nsec; |
| }; |
| |
| struct stat_data { |
| struct cache_time sd_ctime; |
| struct cache_time sd_mtime; |
| unsigned int sd_dev; |
| unsigned int sd_ino; |
| unsigned int sd_uid; |
| unsigned int sd_gid; |
| unsigned int sd_size; |
| }; |
| |
| struct cache_entry { |
| struct hashmap_entry ent; |
| struct stat_data ce_stat_data; |
| unsigned int ce_mode; |
| unsigned int ce_flags; |
| unsigned int mem_pool_allocated; |
| unsigned int ce_namelen; |
| unsigned int index; /* for link extension */ |
| struct object_id oid; |
| char name[FLEX_ARRAY]; /* more */ |
| }; |
| |
| #define CE_STAGEMASK (0x3000) |
| #define CE_EXTENDED (0x4000) |
| #define CE_VALID (0x8000) |
| #define CE_STAGESHIFT 12 |
| |
| /* |
| * Range 0xFFFF0FFF in ce_flags is divided into |
| * two parts: in-memory flags and on-disk ones. |
| * Flags in CE_EXTENDED_FLAGS will get saved on-disk |
| * if you want to save a new flag, add it in |
| * CE_EXTENDED_FLAGS |
| * |
| * In-memory only flags |
| */ |
| #define CE_UPDATE (1 << 16) |
| #define CE_REMOVE (1 << 17) |
| #define CE_UPTODATE (1 << 18) |
| #define CE_ADDED (1 << 19) |
| |
| #define CE_HASHED (1 << 20) |
| #define CE_FSMONITOR_VALID (1 << 21) |
| #define CE_WT_REMOVE (1 << 22) /* remove in work directory */ |
| #define CE_CONFLICTED (1 << 23) |
| |
| #define CE_UNPACKED (1 << 24) |
| #define CE_NEW_SKIP_WORKTREE (1 << 25) |
| |
| /* used to temporarily mark paths matched by pathspecs */ |
| #define CE_MATCHED (1 << 26) |
| |
| #define CE_UPDATE_IN_BASE (1 << 27) |
| #define CE_STRIP_NAME (1 << 28) |
| |
| /* |
| * Extended on-disk flags |
| */ |
| #define CE_INTENT_TO_ADD (1 << 29) |
| #define CE_SKIP_WORKTREE (1 << 30) |
| /* CE_EXTENDED2 is for future extension */ |
| #define CE_EXTENDED2 (1U << 31) |
| |
| #define CE_EXTENDED_FLAGS (CE_INTENT_TO_ADD | CE_SKIP_WORKTREE) |
| |
| /* |
| * Safeguard to avoid saving wrong flags: |
| * - CE_EXTENDED2 won't get saved until its semantic is known |
| * - Bits in 0x0000FFFF have been saved in ce_flags already |
| * - Bits in 0x003F0000 are currently in-memory flags |
| */ |
| #if CE_EXTENDED_FLAGS & 0x803FFFFF |
| #error "CE_EXTENDED_FLAGS out of range" |
| #endif |
| |
| /* Forward structure decls */ |
| struct pathspec; |
| struct child_process; |
| struct tree; |
| |
| /* |
| * Copy the sha1 and stat state of a cache entry from one to |
| * another. But we never change the name, or the hash state! |
| */ |
| static inline void copy_cache_entry(struct cache_entry *dst, |
| const struct cache_entry *src) |
| { |
| unsigned int state = dst->ce_flags & CE_HASHED; |
| int mem_pool_allocated = dst->mem_pool_allocated; |
| |
| /* Don't copy hash chain and name */ |
| memcpy(&dst->ce_stat_data, &src->ce_stat_data, |
| offsetof(struct cache_entry, name) - |
| offsetof(struct cache_entry, ce_stat_data)); |
| |
| /* Restore the hash state */ |
| dst->ce_flags = (dst->ce_flags & ~CE_HASHED) | state; |
| |
| /* Restore the mem_pool_allocated flag */ |
| dst->mem_pool_allocated = mem_pool_allocated; |
| } |
| |
| static inline unsigned create_ce_flags(unsigned stage) |
| { |
| return (stage << CE_STAGESHIFT); |
| } |
| |
| #define ce_namelen(ce) ((ce)->ce_namelen) |
| #define ce_size(ce) cache_entry_size(ce_namelen(ce)) |
| #define ce_stage(ce) ((CE_STAGEMASK & (ce)->ce_flags) >> CE_STAGESHIFT) |
| #define ce_uptodate(ce) ((ce)->ce_flags & CE_UPTODATE) |
| #define ce_skip_worktree(ce) ((ce)->ce_flags & CE_SKIP_WORKTREE) |
| #define ce_mark_uptodate(ce) ((ce)->ce_flags |= CE_UPTODATE) |
| #define ce_intent_to_add(ce) ((ce)->ce_flags & CE_INTENT_TO_ADD) |
| |
| #define ce_permissions(mode) (((mode) & 0100) ? 0755 : 0644) |
| static inline unsigned int create_ce_mode(unsigned int mode) |
| { |
| if (S_ISLNK(mode)) |
| return S_IFLNK; |
| if (S_ISDIR(mode) || S_ISGITLINK(mode)) |
| return S_IFGITLINK; |
| return S_IFREG | ce_permissions(mode); |
| } |
| static inline unsigned int ce_mode_from_stat(const struct cache_entry *ce, |
| unsigned int mode) |
| { |
| extern int trust_executable_bit, has_symlinks; |
| if (!has_symlinks && S_ISREG(mode) && |
| ce && S_ISLNK(ce->ce_mode)) |
| return ce->ce_mode; |
| if (!trust_executable_bit && S_ISREG(mode)) { |
| if (ce && S_ISREG(ce->ce_mode)) |
| return ce->ce_mode; |
| return create_ce_mode(0666); |
| } |
| return create_ce_mode(mode); |
| } |
| static inline int ce_to_dtype(const struct cache_entry *ce) |
| { |
| unsigned ce_mode = ntohl(ce->ce_mode); |
| if (S_ISREG(ce_mode)) |
| return DT_REG; |
| else if (S_ISDIR(ce_mode) || S_ISGITLINK(ce_mode)) |
| return DT_DIR; |
| else if (S_ISLNK(ce_mode)) |
| return DT_LNK; |
| else |
| return DT_UNKNOWN; |
| } |
| static inline unsigned int canon_mode(unsigned int mode) |
| { |
| if (S_ISREG(mode)) |
| return S_IFREG | ce_permissions(mode); |
| if (S_ISLNK(mode)) |
| return S_IFLNK; |
| if (S_ISDIR(mode)) |
| return S_IFDIR; |
| return S_IFGITLINK; |
| } |
| |
| #define cache_entry_size(len) (offsetof(struct cache_entry,name) + (len) + 1) |
| |
| #define SOMETHING_CHANGED (1 << 0) /* unclassified changes go here */ |
| #define CE_ENTRY_CHANGED (1 << 1) |
| #define CE_ENTRY_REMOVED (1 << 2) |
| #define CE_ENTRY_ADDED (1 << 3) |
| #define RESOLVE_UNDO_CHANGED (1 << 4) |
| #define CACHE_TREE_CHANGED (1 << 5) |
| #define SPLIT_INDEX_ORDERED (1 << 6) |
| #define UNTRACKED_CHANGED (1 << 7) |
| #define FSMONITOR_CHANGED (1 << 8) |
| |
| struct split_index; |
| struct untracked_cache; |
| |
| struct index_state { |
| struct cache_entry **cache; |
| unsigned int version; |
| unsigned int cache_nr, cache_alloc, cache_changed; |
| struct string_list *resolve_undo; |
| struct cache_tree *cache_tree; |
| struct split_index *split_index; |
| struct cache_time timestamp; |
| unsigned name_hash_initialized : 1, |
| initialized : 1, |
| drop_cache_tree : 1; |
| struct hashmap name_hash; |
| struct hashmap dir_hash; |
| struct object_id oid; |
| struct untracked_cache *untracked; |
| uint64_t fsmonitor_last_update; |
| struct ewah_bitmap *fsmonitor_dirty; |
| struct mem_pool *ce_mem_pool; |
| }; |
| |
| /* Name hashing */ |
| extern int test_lazy_init_name_hash(struct index_state *istate, int try_threaded); |
| extern void add_name_hash(struct index_state *istate, struct cache_entry *ce); |
| extern void remove_name_hash(struct index_state *istate, struct cache_entry *ce); |
| extern void free_name_hash(struct index_state *istate); |
| |
| |
| /* Cache entry creation and cleanup */ |
| |
| /* |
| * Create cache_entry intended for use in the specified index. Caller |
| * is responsible for discarding the cache_entry with |
| * `discard_cache_entry`. |
| */ |
| struct cache_entry *make_cache_entry(struct index_state *istate, |
| unsigned int mode, |
| const struct object_id *oid, |
| const char *path, |
| int stage, |
| unsigned int refresh_options); |
| |
| struct cache_entry *make_empty_cache_entry(struct index_state *istate, |
| size_t name_len); |
| |
| /* |
| * Create a cache_entry that is not intended to be added to an index. |
| * Caller is responsible for discarding the cache_entry |
| * with `discard_cache_entry`. |
| */ |
| struct cache_entry *make_transient_cache_entry(unsigned int mode, |
| const struct object_id *oid, |
| const char *path, |
| int stage); |
| |
| struct cache_entry *make_empty_transient_cache_entry(size_t name_len); |
| |
| /* |
| * Discard cache entry. |
| */ |
| void discard_cache_entry(struct cache_entry *ce); |
| |
| /* |
| * Check configuration if we should perform extra validation on cache |
| * entries. |
| */ |
| int should_validate_cache_entries(void); |
| |
| /* |
| * Duplicate a cache_entry. Allocate memory for the new entry from a |
| * memory_pool. Takes into account cache_entry fields that are meant |
| * for managing the underlying memory allocation of the cache_entry. |
| */ |
| struct cache_entry *dup_cache_entry(const struct cache_entry *ce, struct index_state *istate); |
| |
| /* |
| * Validate the cache entries in the index. This is an internal |
| * consistency check that the cache_entry structs are allocated from |
| * the expected memory pool. |
| */ |
| void validate_cache_entries(const struct index_state *istate); |
| |
| #ifdef USE_THE_INDEX_COMPATIBILITY_MACROS |
| extern struct index_state the_index; |
| |
| #define active_cache (the_index.cache) |
| #define active_nr (the_index.cache_nr) |
| #define active_alloc (the_index.cache_alloc) |
| #define active_cache_changed (the_index.cache_changed) |
| #define active_cache_tree (the_index.cache_tree) |
| |
| #define read_cache() repo_read_index(the_repository) |
| #define read_cache_from(path) read_index_from(&the_index, (path), (get_git_dir())) |
| #define read_cache_preload(pathspec) repo_read_index_preload(the_repository, (pathspec), 0) |
| #define is_cache_unborn() is_index_unborn(&the_index) |
| #define read_cache_unmerged() repo_read_index_unmerged(the_repository) |
| #define discard_cache() discard_index(&the_index) |
| #define unmerged_cache() unmerged_index(&the_index) |
| #define cache_name_pos(name, namelen) index_name_pos(&the_index,(name),(namelen)) |
| #define add_cache_entry(ce, option) add_index_entry(&the_index, (ce), (option)) |
| #define rename_cache_entry_at(pos, new_name) rename_index_entry_at(&the_index, (pos), (new_name)) |
| #define remove_cache_entry_at(pos) remove_index_entry_at(&the_index, (pos)) |
| #define remove_file_from_cache(path) remove_file_from_index(&the_index, (path)) |
| #define add_to_cache(path, st, flags) add_to_index(&the_index, (path), (st), (flags)) |
| #define add_file_to_cache(path, flags) add_file_to_index(&the_index, (path), (flags)) |
| #define chmod_cache_entry(ce, flip) chmod_index_entry(&the_index, (ce), (flip)) |
| #define refresh_cache(flags) refresh_index(&the_index, (flags), NULL, NULL, NULL) |
| #define ce_match_stat(ce, st, options) ie_match_stat(&the_index, (ce), (st), (options)) |
| #define ce_modified(ce, st, options) ie_modified(&the_index, (ce), (st), (options)) |
| #define cache_dir_exists(name, namelen) index_dir_exists(&the_index, (name), (namelen)) |
| #define cache_file_exists(name, namelen, igncase) index_file_exists(&the_index, (name), (namelen), (igncase)) |
| #define cache_name_is_other(name, namelen) index_name_is_other(&the_index, (name), (namelen)) |
| #define resolve_undo_clear() resolve_undo_clear_index(&the_index) |
| #define unmerge_cache_entry_at(at) unmerge_index_entry_at(&the_index, at) |
| #define unmerge_cache(pathspec) unmerge_index(&the_index, pathspec) |
| #define read_blob_data_from_cache(path, sz) read_blob_data_from_index(&the_index, (path), (sz)) |
| #define hold_locked_index(lock_file, flags) repo_hold_locked_index(the_repository, (lock_file), (flags)) |
| #endif |
| |
| #define TYPE_BITS 3 |
| |
| /* |
| * Values in this enum (except those outside the 3 bit range) are part |
| * of pack file format. See Documentation/technical/pack-format.txt |
| * for more information. |
| */ |
| enum object_type { |
| OBJ_BAD = -1, |
| OBJ_NONE = 0, |
| OBJ_COMMIT = 1, |
| OBJ_TREE = 2, |
| OBJ_BLOB = 3, |
| OBJ_TAG = 4, |
| /* 5 for future expansion */ |
| OBJ_OFS_DELTA = 6, |
| OBJ_REF_DELTA = 7, |
| OBJ_ANY, |
| OBJ_MAX |
| }; |
| |
| static inline enum object_type object_type(unsigned int mode) |
| { |
| return S_ISDIR(mode) ? OBJ_TREE : |
| S_ISGITLINK(mode) ? OBJ_COMMIT : |
| OBJ_BLOB; |
| } |
| |
| /* Double-check local_repo_env below if you add to this list. */ |
| #define GIT_DIR_ENVIRONMENT "GIT_DIR" |
| #define GIT_COMMON_DIR_ENVIRONMENT "GIT_COMMON_DIR" |
| #define GIT_NAMESPACE_ENVIRONMENT "GIT_NAMESPACE" |
| #define GIT_WORK_TREE_ENVIRONMENT "GIT_WORK_TREE" |
| #define GIT_PREFIX_ENVIRONMENT "GIT_PREFIX" |
| #define GIT_SUPER_PREFIX_ENVIRONMENT "GIT_INTERNAL_SUPER_PREFIX" |
| #define DEFAULT_GIT_DIR_ENVIRONMENT ".git" |
| #define DB_ENVIRONMENT "GIT_OBJECT_DIRECTORY" |
| #define INDEX_ENVIRONMENT "GIT_INDEX_FILE" |
| #define GRAFT_ENVIRONMENT "GIT_GRAFT_FILE" |
| #define GIT_SHALLOW_FILE_ENVIRONMENT "GIT_SHALLOW_FILE" |
| #define TEMPLATE_DIR_ENVIRONMENT "GIT_TEMPLATE_DIR" |
| #define CONFIG_ENVIRONMENT "GIT_CONFIG" |
| #define CONFIG_DATA_ENVIRONMENT "GIT_CONFIG_PARAMETERS" |
| #define EXEC_PATH_ENVIRONMENT "GIT_EXEC_PATH" |
| #define CEILING_DIRECTORIES_ENVIRONMENT "GIT_CEILING_DIRECTORIES" |
| #define NO_REPLACE_OBJECTS_ENVIRONMENT "GIT_NO_REPLACE_OBJECTS" |
| #define GIT_REPLACE_REF_BASE_ENVIRONMENT "GIT_REPLACE_REF_BASE" |
| #define GITATTRIBUTES_FILE ".gitattributes" |
| #define INFOATTRIBUTES_FILE "info/attributes" |
| #define ATTRIBUTE_MACRO_PREFIX "[attr]" |
| #define GITMODULES_FILE ".gitmodules" |
| #define GITMODULES_INDEX ":.gitmodules" |
| #define GITMODULES_HEAD "HEAD:.gitmodules" |
| #define GIT_NOTES_REF_ENVIRONMENT "GIT_NOTES_REF" |
| #define GIT_NOTES_DEFAULT_REF "refs/notes/commits" |
| #define GIT_NOTES_DISPLAY_REF_ENVIRONMENT "GIT_NOTES_DISPLAY_REF" |
| #define GIT_NOTES_REWRITE_REF_ENVIRONMENT "GIT_NOTES_REWRITE_REF" |
| #define GIT_NOTES_REWRITE_MODE_ENVIRONMENT "GIT_NOTES_REWRITE_MODE" |
| #define GIT_LITERAL_PATHSPECS_ENVIRONMENT "GIT_LITERAL_PATHSPECS" |
| #define GIT_GLOB_PATHSPECS_ENVIRONMENT "GIT_GLOB_PATHSPECS" |
| #define GIT_NOGLOB_PATHSPECS_ENVIRONMENT "GIT_NOGLOB_PATHSPECS" |
| #define GIT_ICASE_PATHSPECS_ENVIRONMENT "GIT_ICASE_PATHSPECS" |
| #define GIT_QUARANTINE_ENVIRONMENT "GIT_QUARANTINE_PATH" |
| #define GIT_OPTIONAL_LOCKS_ENVIRONMENT "GIT_OPTIONAL_LOCKS" |
| #define GIT_TEXT_DOMAIN_DIR_ENVIRONMENT "GIT_TEXTDOMAINDIR" |
| |
| /* |
| * Environment variable used in handshaking the wire protocol. |
| * Contains a colon ':' separated list of keys with optional values |
| * 'key[=value]'. Presence of unknown keys and values must be |
| * ignored. |
| */ |
| #define GIT_PROTOCOL_ENVIRONMENT "GIT_PROTOCOL" |
| /* HTTP header used to handshake the wire protocol */ |
| #define GIT_PROTOCOL_HEADER "Git-Protocol" |
| |
| /* |
| * This environment variable is expected to contain a boolean indicating |
| * whether we should or should not treat: |
| * |
| * GIT_DIR=foo.git git ... |
| * |
| * as if GIT_WORK_TREE=. was given. It's not expected that users will make use |
| * of this, but we use it internally to communicate to sub-processes that we |
| * are in a bare repo. If not set, defaults to true. |
| */ |
| #define GIT_IMPLICIT_WORK_TREE_ENVIRONMENT "GIT_IMPLICIT_WORK_TREE" |
| |
| /* |
| * Repository-local GIT_* environment variables; these will be cleared |
| * when git spawns a sub-process that runs inside another repository. |
| * The array is NULL-terminated, which makes it easy to pass in the "env" |
| * parameter of a run-command invocation, or to do a simple walk. |
| */ |
| extern const char * const local_repo_env[]; |
| |
| extern void setup_git_env(const char *git_dir); |
| |
| /* |
| * Returns true iff we have a configured git repository (either via |
| * setup_git_directory, or in the environment via $GIT_DIR). |
| */ |
| int have_git_dir(void); |
| |
| extern int is_bare_repository_cfg; |
| extern int is_bare_repository(void); |
| extern int is_inside_git_dir(void); |
| extern char *git_work_tree_cfg; |
| extern int is_inside_work_tree(void); |
| extern const char *get_git_dir(void); |
| extern const char *get_git_common_dir(void); |
| extern char *get_object_directory(void); |
| extern char *get_index_file(void); |
| extern char *get_graft_file(struct repository *r); |
| extern void set_git_dir(const char *path); |
| extern int get_common_dir_noenv(struct strbuf *sb, const char *gitdir); |
| extern int get_common_dir(struct strbuf *sb, const char *gitdir); |
| extern const char *get_git_namespace(void); |
| extern const char *strip_namespace(const char *namespaced_ref); |
| extern const char *get_super_prefix(void); |
| extern const char *get_git_work_tree(void); |
| |
| /* |
| * Return true if the given path is a git directory; note that this _just_ |
| * looks at the directory itself. If you want to know whether "foo/.git" |
| * is a repository, you must feed that path, not just "foo". |
| */ |
| extern int is_git_directory(const char *path); |
| |
| /* |
| * Return 1 if the given path is the root of a git repository or |
| * submodule, else 0. Will not return 1 for bare repositories with the |
| * exception of creating a bare repository in "foo/.git" and calling |
| * is_git_repository("foo"). |
| * |
| * If we run into read errors, we err on the side of saying "yes, it is", |
| * as we usually consider sub-repos precious, and would prefer to err on the |
| * side of not disrupting or deleting them. |
| */ |
| extern int is_nonbare_repository_dir(struct strbuf *path); |
| |
| #define READ_GITFILE_ERR_STAT_FAILED 1 |
| #define READ_GITFILE_ERR_NOT_A_FILE 2 |
| #define READ_GITFILE_ERR_OPEN_FAILED 3 |
| #define READ_GITFILE_ERR_READ_FAILED 4 |
| #define READ_GITFILE_ERR_INVALID_FORMAT 5 |
| #define READ_GITFILE_ERR_NO_PATH 6 |
| #define READ_GITFILE_ERR_NOT_A_REPO 7 |
| #define READ_GITFILE_ERR_TOO_LARGE 8 |
| extern void read_gitfile_error_die(int error_code, const char *path, const char *dir); |
| extern const char *read_gitfile_gently(const char *path, int *return_error_code); |
| #define read_gitfile(path) read_gitfile_gently((path), NULL) |
| extern const char *resolve_gitdir_gently(const char *suspect, int *return_error_code); |
| #define resolve_gitdir(path) resolve_gitdir_gently((path), NULL) |
| |
| extern void set_git_work_tree(const char *tree); |
| |
| #define ALTERNATE_DB_ENVIRONMENT "GIT_ALTERNATE_OBJECT_DIRECTORIES" |
| |
| extern void setup_work_tree(void); |
| /* |
| * Find the commondir and gitdir of the repository that contains the current |
| * working directory, without changing the working directory or other global |
| * state. The result is appended to commondir and gitdir. If the discovered |
| * gitdir does not correspond to a worktree, then 'commondir' and 'gitdir' will |
| * both have the same result appended to the buffer. The return value is |
| * either 0 upon success and non-zero if no repository was found. |
| */ |
| extern int discover_git_directory(struct strbuf *commondir, |
| struct strbuf *gitdir); |
| extern const char *setup_git_directory_gently(int *); |
| extern const char *setup_git_directory(void); |
| extern char *prefix_path(const char *prefix, int len, const char *path); |
| extern char *prefix_path_gently(const char *prefix, int len, int *remaining, const char *path); |
| |
| /* |
| * Concatenate "prefix" (if len is non-zero) and "path", with no |
| * connecting characters (so "prefix" should end with a "/"). |
| * Unlike prefix_path, this should be used if the named file does |
| * not have to interact with index entry; i.e. name of a random file |
| * on the filesystem. |
| * |
| * The return value is always a newly allocated string (even if the |
| * prefix was empty). |
| */ |
| extern char *prefix_filename(const char *prefix, const char *path); |
| |
| extern int check_filename(const char *prefix, const char *name); |
| extern void verify_filename(const char *prefix, |
| const char *name, |
| int diagnose_misspelt_rev); |
| extern void verify_non_filename(const char *prefix, const char *name); |
| extern int path_inside_repo(const char *prefix, const char *path); |
| |
| #define INIT_DB_QUIET 0x0001 |
| #define INIT_DB_EXIST_OK 0x0002 |
| |
| extern int init_db(const char *git_dir, const char *real_git_dir, |
| const char *template_dir, unsigned int flags); |
| |
| extern void sanitize_stdfds(void); |
| extern int daemonize(void); |
| |
| #define alloc_nr(x) (((x)+16)*3/2) |
| |
| /* |
| * Realloc the buffer pointed at by variable 'x' so that it can hold |
| * at least 'nr' entries; the number of entries currently allocated |
| * is 'alloc', using the standard growing factor alloc_nr() macro. |
| * |
| * DO NOT USE any expression with side-effect for 'x', 'nr', or 'alloc'. |
| */ |
| #define ALLOC_GROW(x, nr, alloc) \ |
| do { \ |
| if ((nr) > alloc) { \ |
| if (alloc_nr(alloc) < (nr)) \ |
| alloc = (nr); \ |
| else \ |
| alloc = alloc_nr(alloc); \ |
| REALLOC_ARRAY(x, alloc); \ |
| } \ |
| } while (0) |
| |
| /* Initialize and use the cache information */ |
| struct lock_file; |
| extern void preload_index(struct index_state *index, |
| const struct pathspec *pathspec, |
| unsigned int refresh_flags); |
| extern int do_read_index(struct index_state *istate, const char *path, |
| int must_exist); /* for testting only! */ |
| extern int read_index_from(struct index_state *, const char *path, |
| const char *gitdir); |
| extern int is_index_unborn(struct index_state *); |
| |
| /* For use with `write_locked_index()`. */ |
| #define COMMIT_LOCK (1 << 0) |
| #define SKIP_IF_UNCHANGED (1 << 1) |
| |
| /* |
| * Write the index while holding an already-taken lock. Close the lock, |
| * and if `COMMIT_LOCK` is given, commit it. |
| * |
| * Unless a split index is in use, write the index into the lockfile. |
| * |
| * With a split index, write the shared index to a temporary file, |
| * adjust its permissions and rename it into place, then write the |
| * split index to the lockfile. If the temporary file for the shared |
| * index cannot be created, fall back to the behavior described in |
| * the previous paragraph. |
| * |
| * With `COMMIT_LOCK`, the lock is always committed or rolled back. |
| * Without it, the lock is closed, but neither committed nor rolled |
| * back. |
| * |
| * If `SKIP_IF_UNCHANGED` is given and the index is unchanged, nothing |
| * is written (and the lock is rolled back if `COMMIT_LOCK` is given). |
| */ |
| extern int write_locked_index(struct index_state *, struct lock_file *lock, unsigned flags); |
| |
| extern int discard_index(struct index_state *); |
| extern void move_index_extensions(struct index_state *dst, struct index_state *src); |
| extern int unmerged_index(const struct index_state *); |
| |
| /** |
| * Returns 1 if istate differs from tree, 0 otherwise. If tree is NULL, |
| * compares istate to HEAD. If tree is NULL and on an unborn branch, |
| * returns 1 if there are entries in istate, 0 otherwise. If an strbuf is |
| * provided, the space-separated list of files that differ will be appended |
| * to it. |
| */ |
| extern int repo_index_has_changes(struct repository *repo, |
| struct tree *tree, |
| struct strbuf *sb); |
| |
| extern int verify_path(const char *path, unsigned mode); |
| extern int strcmp_offset(const char *s1, const char *s2, size_t *first_change); |
| extern int index_dir_exists(struct index_state *istate, const char *name, int namelen); |
| extern void adjust_dirname_case(struct index_state *istate, char *name); |
| extern struct cache_entry *index_file_exists(struct index_state *istate, const char *name, int namelen, int igncase); |
| |
| /* |
| * Searches for an entry defined by name and namelen in the given index. |
| * If the return value is positive (including 0) it is the position of an |
| * exact match. If the return value is negative, the negated value minus 1 |
| * is the position where the entry would be inserted. |
| * Example: The current index consists of these files and its stages: |
| * |
| * b#0, d#0, f#1, f#3 |
| * |
| * index_name_pos(&index, "a", 1) -> -1 |
| * index_name_pos(&index, "b", 1) -> 0 |
| * index_name_pos(&index, "c", 1) -> -2 |
| * index_name_pos(&index, "d", 1) -> 1 |
| * index_name_pos(&index, "e", 1) -> -3 |
| * index_name_pos(&index, "f", 1) -> -3 |
| * index_name_pos(&index, "g", 1) -> -5 |
| */ |
| extern int index_name_pos(const struct index_state *, const char *name, int namelen); |
| |
| #define ADD_CACHE_OK_TO_ADD 1 /* Ok to add */ |
| #define ADD_CACHE_OK_TO_REPLACE 2 /* Ok to replace file/directory */ |
| #define ADD_CACHE_SKIP_DFCHECK 4 /* Ok to skip DF conflict checks */ |
| #define ADD_CACHE_JUST_APPEND 8 /* Append only; tree.c::read_tree() */ |
| #define ADD_CACHE_NEW_ONLY 16 /* Do not replace existing ones */ |
| #define ADD_CACHE_KEEP_CACHE_TREE 32 /* Do not invalidate cache-tree */ |
| #define ADD_CACHE_RENORMALIZE 64 /* Pass along HASH_RENORMALIZE */ |
| extern int add_index_entry(struct index_state *, struct cache_entry *ce, int option); |
| extern void rename_index_entry_at(struct index_state *, int pos, const char *new_name); |
| |
| /* Remove entry, return true if there are more entries to go. */ |
| extern int remove_index_entry_at(struct index_state *, int pos); |
| |
| extern void remove_marked_cache_entries(struct index_state *istate, int invalidate); |
| extern int remove_file_from_index(struct index_state *, const char *path); |
| #define ADD_CACHE_VERBOSE 1 |
| #define ADD_CACHE_PRETEND 2 |
| #define ADD_CACHE_IGNORE_ERRORS 4 |
| #define ADD_CACHE_IGNORE_REMOVAL 8 |
| #define ADD_CACHE_INTENT 16 |
| /* |
| * These two are used to add the contents of the file at path |
| * to the index, marking the working tree up-to-date by storing |
| * the cached stat info in the resulting cache entry. A caller |
| * that has already run lstat(2) on the path can call |
| * add_to_index(), and all others can call add_file_to_index(); |
| * the latter will do necessary lstat(2) internally before |
| * calling the former. |
| */ |
| extern int add_to_index(struct index_state *, const char *path, struct stat *, int flags); |
| extern int add_file_to_index(struct index_state *, const char *path, int flags); |
| |
| extern int chmod_index_entry(struct index_state *, struct cache_entry *ce, char flip); |
| extern int ce_same_name(const struct cache_entry *a, const struct cache_entry *b); |
| extern void set_object_name_for_intent_to_add_entry(struct cache_entry *ce); |
| extern int index_name_is_other(const struct index_state *, const char *, int); |
| extern void *read_blob_data_from_index(const struct index_state *, const char *, unsigned long *); |
| |
| /* do stat comparison even if CE_VALID is true */ |
| #define CE_MATCH_IGNORE_VALID 01 |
| /* do not check the contents but report dirty on racily-clean entries */ |
| #define CE_MATCH_RACY_IS_DIRTY 02 |
| /* do stat comparison even if CE_SKIP_WORKTREE is true */ |
| #define CE_MATCH_IGNORE_SKIP_WORKTREE 04 |
| /* ignore non-existent files during stat update */ |
| #define CE_MATCH_IGNORE_MISSING 0x08 |
| /* enable stat refresh */ |
| #define CE_MATCH_REFRESH 0x10 |
| /* don't refresh_fsmonitor state or do stat comparison even if CE_FSMONITOR_VALID is true */ |
| #define CE_MATCH_IGNORE_FSMONITOR 0X20 |
| extern int is_racy_timestamp(const struct index_state *istate, |
| const struct cache_entry *ce); |
| extern int ie_match_stat(struct index_state *, const struct cache_entry *, struct stat *, unsigned int); |
| extern int ie_modified(struct index_state *, const struct cache_entry *, struct stat *, unsigned int); |
| |
| #define HASH_WRITE_OBJECT 1 |
| #define HASH_FORMAT_CHECK 2 |
| #define HASH_RENORMALIZE 4 |
| extern int index_fd(struct index_state *istate, struct object_id *oid, int fd, struct stat *st, enum object_type type, const char *path, unsigned flags); |
| extern int index_path(struct index_state *istate, struct object_id *oid, const char *path, struct stat *st, unsigned flags); |
| |
| /* |
| * Record to sd the data from st that we use to check whether a file |
| * might have changed. |
| */ |
| extern void fill_stat_data(struct stat_data *sd, struct stat *st); |
| |
| /* |
| * Return 0 if st is consistent with a file not having been changed |
| * since sd was filled. If there are differences, return a |
| * combination of MTIME_CHANGED, CTIME_CHANGED, OWNER_CHANGED, |
| * INODE_CHANGED, and DATA_CHANGED. |
| */ |
| extern int match_stat_data(const struct stat_data *sd, struct stat *st); |
| extern int match_stat_data_racy(const struct index_state *istate, |
| const struct stat_data *sd, struct stat *st); |
| |
| extern void fill_stat_cache_info(struct cache_entry *ce, struct stat *st); |
| |
| #define REFRESH_REALLY 0x0001 /* ignore_valid */ |
| #define REFRESH_UNMERGED 0x0002 /* allow unmerged */ |
| #define REFRESH_QUIET 0x0004 /* be quiet about it */ |
| #define REFRESH_IGNORE_MISSING 0x0008 /* ignore non-existent */ |
| #define REFRESH_IGNORE_SUBMODULES 0x0010 /* ignore submodules */ |
| #define REFRESH_IN_PORCELAIN 0x0020 /* user friendly output, not "needs update" */ |
| #define REFRESH_PROGRESS 0x0040 /* show progress bar if stderr is tty */ |
| extern int refresh_index(struct index_state *, unsigned int flags, const struct pathspec *pathspec, char *seen, const char *header_msg); |
| extern struct cache_entry *refresh_cache_entry(struct index_state *, struct cache_entry *, unsigned int); |
| |
| extern void set_alternate_index_output(const char *); |
| |
| extern int verify_index_checksum; |
| extern int verify_ce_order; |
| |
| /* Environment bits from configuration mechanism */ |
| extern int trust_executable_bit; |
| extern int trust_ctime; |
| extern int check_stat; |
| extern int quote_path_fully; |
| extern int has_symlinks; |
| extern int minimum_abbrev, default_abbrev; |
| extern int ignore_case; |
| extern int assume_unchanged; |
| extern int prefer_symlink_refs; |
| extern int warn_ambiguous_refs; |
| extern int warn_on_object_refname_ambiguity; |
| extern const char *apply_default_whitespace; |
| extern const char *apply_default_ignorewhitespace; |
| extern const char *git_attributes_file; |
| extern const char *git_hooks_path; |
| extern int zlib_compression_level; |
| extern int core_compression_level; |
| extern int pack_compression_level; |
| extern size_t packed_git_window_size; |
| extern size_t packed_git_limit; |
| extern size_t delta_base_cache_limit; |
| extern unsigned long big_file_threshold; |
| extern unsigned long pack_size_limit_cfg; |
| |
| /* |
| * Accessors for the core.sharedrepository config which lazy-load the value |
| * from the config (if not already set). The "reset" function can be |
| * used to unset "set" or cached value, meaning that the value will be loaded |
| * fresh from the config file on the next call to get_shared_repository(). |
| */ |
| void set_shared_repository(int value); |
| int get_shared_repository(void); |
| void reset_shared_repository(void); |
| |
| /* |
| * Do replace refs need to be checked this run? This variable is |
| * initialized to true unless --no-replace-object is used or |
| * $GIT_NO_REPLACE_OBJECTS is set, but is set to false by some |
| * commands that do not want replace references to be active. |
| */ |
| extern int read_replace_refs; |
| extern char *git_replace_ref_base; |
| |
| extern int fsync_object_files; |
| extern int core_preload_index; |
| extern int core_apply_sparse_checkout; |
| extern int precomposed_unicode; |
| extern int protect_hfs; |
| extern int protect_ntfs; |
| extern const char *core_fsmonitor; |
| |
| /* |
| * Include broken refs in all ref iterations, which will |
| * generally choke dangerous operations rather than letting |
| * them silently proceed without taking the broken ref into |
| * account. |
| */ |
| extern int ref_paranoia; |
| |
| /* |
| * Returns the boolean value of $GIT_OPTIONAL_LOCKS (or the default value). |
| */ |
| int use_optional_locks(void); |
| |
| /* |
| * The character that begins a commented line in user-editable file |
| * that is subject to stripspace. |
| */ |
| extern char comment_line_char; |
| extern int auto_comment_line_char; |
| |
| enum log_refs_config { |
| LOG_REFS_UNSET = -1, |
| LOG_REFS_NONE = 0, |
| LOG_REFS_NORMAL, |
| LOG_REFS_ALWAYS |
| }; |
| extern enum log_refs_config log_all_ref_updates; |
| |
| enum rebase_setup_type { |
| AUTOREBASE_NEVER = 0, |
| AUTOREBASE_LOCAL, |
| AUTOREBASE_REMOTE, |
| AUTOREBASE_ALWAYS |
| }; |
| |
| enum push_default_type { |
| PUSH_DEFAULT_NOTHING = 0, |
| PUSH_DEFAULT_MATCHING, |
| PUSH_DEFAULT_SIMPLE, |
| PUSH_DEFAULT_UPSTREAM, |
| PUSH_DEFAULT_CURRENT, |
| PUSH_DEFAULT_UNSPECIFIED |
| }; |
| |
| extern enum rebase_setup_type autorebase; |
| extern enum push_default_type push_default; |
| |
| enum object_creation_mode { |
| OBJECT_CREATION_USES_HARDLINKS = 0, |
| OBJECT_CREATION_USES_RENAMES = 1 |
| }; |
| |
| extern enum object_creation_mode object_creation_mode; |
| |
| extern char *notes_ref_name; |
| |
| extern int grafts_replace_parents; |
| |
| /* |
| * GIT_REPO_VERSION is the version we write by default. The |
| * _READ variant is the highest number we know how to |
| * handle. |
| */ |
| #define GIT_REPO_VERSION 0 |
| #define GIT_REPO_VERSION_READ 1 |
| extern int repository_format_precious_objects; |
| extern char *repository_format_partial_clone; |
| extern const char *core_partial_clone_filter_default; |
| extern int repository_format_worktree_config; |
| |
| /* |
| * You _have_ to initialize a `struct repository_format` using |
| * `= REPOSITORY_FORMAT_INIT` before calling `read_repository_format()`. |
| */ |
| struct repository_format { |
| int version; |
| int precious_objects; |
| char *partial_clone; /* value of extensions.partialclone */ |
| int worktree_config; |
| int is_bare; |
| int hash_algo; |
| char *work_tree; |
| struct string_list unknown_extensions; |
| }; |
| |
| /* |
| * Always use this to initialize a `struct repository_format` |
| * to a well-defined, default state before calling |
| * `read_repository()`. |
| */ |
| #define REPOSITORY_FORMAT_INIT \ |
| { \ |
| .version = -1, \ |
| .is_bare = -1, \ |
| .hash_algo = GIT_HASH_SHA1, \ |
| .unknown_extensions = STRING_LIST_INIT_DUP, \ |
| } |
| |
| /* |
| * Read the repository format characteristics from the config file "path" into |
| * "format" struct. Returns the numeric version. On error, or if no version is |
| * found in the configuration, -1 is returned, format->version is set to -1, |
| * and all other fields in the struct are set to the default configuration |
| * (REPOSITORY_FORMAT_INIT). Always initialize the struct using |
| * REPOSITORY_FORMAT_INIT before calling this function. |
| */ |
| int read_repository_format(struct repository_format *format, const char *path); |
| |
| /* |
| * Free the memory held onto by `format`, but not the struct itself. |
| * (No need to use this after `read_repository_format()` fails.) |
| */ |
| void clear_repository_format(struct repository_format *format); |
| |
| /* |
| * Verify that the repository described by repository_format is something we |
| * can read. If it is, return 0. Otherwise, return -1, and "err" will describe |
| * any errors encountered. |
| */ |
| int verify_repository_format(const struct repository_format *format, |
| struct strbuf *err); |
| |
| /* |
| * Check the repository format version in the path found in get_git_dir(), |
| * and die if it is a version we don't understand. Generally one would |
| * set_git_dir() before calling this, and use it only for "are we in a valid |
| * repo?". |
| */ |
| extern void check_repository_format(void); |
| |
| #define MTIME_CHANGED 0x0001 |
| #define CTIME_CHANGED 0x0002 |
| #define OWNER_CHANGED 0x0004 |
| #define MODE_CHANGED 0x0008 |
| #define INODE_CHANGED 0x0010 |
| #define DATA_CHANGED 0x0020 |
| #define TYPE_CHANGED 0x0040 |
| |
| /* |
| * Return an abbreviated sha1 unique within this repository's object database. |
| * The result will be at least `len` characters long, and will be NUL |
| * terminated. |
| * |
| * The non-`_r` version returns a static buffer which remains valid until 4 |
| * more calls to find_unique_abbrev are made. |
| * |
| * The `_r` variant writes to a buffer supplied by the caller, which must be at |
| * least `GIT_MAX_HEXSZ + 1` bytes. The return value is the number of bytes |
| * written (excluding the NUL terminator). |
| * |
| * Note that while this version avoids the static buffer, it is not fully |
| * reentrant, as it calls into other non-reentrant git code. |
| */ |
| extern const char *find_unique_abbrev(const struct object_id *oid, int len); |
| extern int find_unique_abbrev_r(char *hex, const struct object_id *oid, int len); |
| |
| extern const unsigned char null_sha1[GIT_MAX_RAWSZ]; |
| extern const struct object_id null_oid; |
| |
| static inline int hashcmp(const unsigned char *sha1, const unsigned char *sha2) |
| { |
| /* |
| * Teach the compiler that there are only two possibilities of hash size |
| * here, so that it can optimize for this case as much as possible. |
| */ |
| if (the_hash_algo->rawsz == GIT_MAX_RAWSZ) |
| return memcmp(sha1, sha2, GIT_MAX_RAWSZ); |
| return memcmp(sha1, sha2, GIT_SHA1_RAWSZ); |
| } |
| |
| static inline int oidcmp(const struct object_id *oid1, const struct object_id *oid2) |
| { |
| return hashcmp(oid1->hash, oid2->hash); |
| } |
| |
| static inline int hasheq(const unsigned char *sha1, const unsigned char *sha2) |
| { |
| /* |
| * We write this here instead of deferring to hashcmp so that the |
| * compiler can properly inline it and avoid calling memcmp. |
| */ |
| if (the_hash_algo->rawsz == GIT_MAX_RAWSZ) |
| return !memcmp(sha1, sha2, GIT_MAX_RAWSZ); |
| return !memcmp(sha1, sha2, GIT_SHA1_RAWSZ); |
| } |
| |
| static inline int oideq(const struct object_id *oid1, const struct object_id *oid2) |
| { |
| return hasheq(oid1->hash, oid2->hash); |
| } |
| |
| static inline int is_null_sha1(const unsigned char *sha1) |
| { |
| return hasheq(sha1, null_sha1); |
| } |
| |
| static inline int is_null_oid(const struct object_id *oid) |
| { |
| return hasheq(oid->hash, null_sha1); |
| } |
| |
| static inline void hashcpy(unsigned char *sha_dst, const unsigned char *sha_src) |
| { |
| memcpy(sha_dst, sha_src, the_hash_algo->rawsz); |
| } |
| |
| static inline void oidcpy(struct object_id *dst, const struct object_id *src) |
| { |
| memcpy(dst->hash, src->hash, GIT_MAX_RAWSZ); |
| } |
| |
| static inline struct object_id *oiddup(const struct object_id *src) |
| { |
| struct object_id *dst = xmalloc(sizeof(struct object_id)); |
| oidcpy(dst, src); |
| return dst; |
| } |
| |
| static inline void hashclr(unsigned char *hash) |
| { |
| memset(hash, 0, the_hash_algo->rawsz); |
| } |
| |
| static inline void oidclr(struct object_id *oid) |
| { |
| memset(oid->hash, 0, GIT_MAX_RAWSZ); |
| } |
| |
| static inline void oidread(struct object_id *oid, const unsigned char *hash) |
| { |
| memcpy(oid->hash, hash, the_hash_algo->rawsz); |
| } |
| |
| static inline int is_empty_blob_sha1(const unsigned char *sha1) |
| { |
| return hasheq(sha1, the_hash_algo->empty_blob->hash); |
| } |
| |
| static inline int is_empty_blob_oid(const struct object_id *oid) |
| { |
| return oideq(oid, the_hash_algo->empty_blob); |
| } |
| |
| static inline int is_empty_tree_sha1(const unsigned char *sha1) |
| { |
| return hasheq(sha1, the_hash_algo->empty_tree->hash); |
| } |
| |
| static inline int is_empty_tree_oid(const struct object_id *oid) |
| { |
| return oideq(oid, the_hash_algo->empty_tree); |
| } |
| |
| const char *empty_tree_oid_hex(void); |
| const char *empty_blob_oid_hex(void); |
| |
| /* set default permissions by passing mode arguments to open(2) */ |
| int git_mkstemps_mode(char *pattern, int suffix_len, int mode); |
| int git_mkstemp_mode(char *pattern, int mode); |
| |
| /* |
| * NOTE NOTE NOTE!! |
| * |
| * PERM_UMASK, OLD_PERM_GROUP and OLD_PERM_EVERYBODY enumerations must |
| * not be changed. Old repositories have core.sharedrepository written in |
| * numeric format, and therefore these values are preserved for compatibility |
| * reasons. |
| */ |
| enum sharedrepo { |
| PERM_UMASK = 0, |
| OLD_PERM_GROUP = 1, |
| OLD_PERM_EVERYBODY = 2, |
| PERM_GROUP = 0660, |
| PERM_EVERYBODY = 0664 |
| }; |
| int git_config_perm(const char *var, const char *value); |
| int adjust_shared_perm(const char *path); |
| |
| /* |
| * Create the directory containing the named path, using care to be |
| * somewhat safe against races. Return one of the scld_error values to |
| * indicate success/failure. On error, set errno to describe the |
| * problem. |
| * |
| * SCLD_VANISHED indicates that one of the ancestor directories of the |
| * path existed at one point during the function call and then |
| * suddenly vanished, probably because another process pruned the |
| * directory while we were working. To be robust against this kind of |
| * race, callers might want to try invoking the function again when it |
| * returns SCLD_VANISHED. |
| * |
| * safe_create_leading_directories() temporarily changes path while it |
| * is working but restores it before returning. |
| * safe_create_leading_directories_const() doesn't modify path, even |
| * temporarily. |
| */ |
| enum scld_error { |
| SCLD_OK = 0, |
| SCLD_FAILED = -1, |
| SCLD_PERMS = -2, |
| SCLD_EXISTS = -3, |
| SCLD_VANISHED = -4 |
| }; |
| enum scld_error safe_create_leading_directories(char *path); |
| enum scld_error safe_create_leading_directories_const(const char *path); |
| |
| /* |
| * Callback function for raceproof_create_file(). This function is |
| * expected to do something that makes dirname(path) permanent despite |
| * the fact that other processes might be cleaning up empty |
| * directories at the same time. Usually it will create a file named |
| * path, but alternatively it could create another file in that |
| * directory, or even chdir() into that directory. The function should |
| * return 0 if the action was completed successfully. On error, it |
| * should return a nonzero result and set errno. |
| * raceproof_create_file() treats two errno values specially: |
| * |
| * - ENOENT -- dirname(path) does not exist. In this case, |
| * raceproof_create_file() tries creating dirname(path) |
| * (and any parent directories, if necessary) and calls |
| * the function again. |
| * |
| * - EISDIR -- the file already exists and is a directory. In this |
| * case, raceproof_create_file() removes the directory if |
| * it is empty (and recursively any empty directories that |
| * it contains) and calls the function again. |
| * |
| * Any other errno causes raceproof_create_file() to fail with the |
| * callback's return value and errno. |
| * |
| * Obviously, this function should be OK with being called again if it |
| * fails with ENOENT or EISDIR. In other scenarios it will not be |
| * called again. |
| */ |
| typedef int create_file_fn(const char *path, void *cb); |
| |
| /* |
| * Create a file in dirname(path) by calling fn, creating leading |
| * directories if necessary. Retry a few times in case we are racing |
| * with another process that is trying to clean up the directory that |
| * contains path. See the documentation for create_file_fn for more |
| * details. |
| * |
| * Return the value and set the errno that resulted from the most |
| * recent call of fn. fn is always called at least once, and will be |
| * called more than once if it returns ENOENT or EISDIR. |
| */ |
| int raceproof_create_file(const char *path, create_file_fn fn, void *cb); |
| |
| int mkdir_in_gitdir(const char *path); |
| extern char *expand_user_path(const char *path, int real_home); |
| const char *enter_repo(const char *path, int strict); |
| static inline int is_absolute_path(const char *path) |
| { |
| return is_dir_sep(path[0]) || has_dos_drive_prefix(path); |
| } |
| int is_directory(const char *); |
| char *strbuf_realpath(struct strbuf *resolved, const char *path, |
| int die_on_error); |
| const char *real_path(const char *path); |
| const char *real_path_if_valid(const char *path); |
| char *real_pathdup(const char *path, int die_on_error); |
| const char *absolute_path(const char *path); |
| char *absolute_pathdup(const char *path); |
| const char *remove_leading_path(const char *in, const char *prefix); |
| const char *relative_path(const char *in, const char *prefix, struct strbuf *sb); |
| int normalize_path_copy_len(char *dst, const char *src, int *prefix_len); |
| int normalize_path_copy(char *dst, const char *src); |
| int longest_ancestor_length(const char *path, struct string_list *prefixes); |
| char *strip_path_suffix(const char *path, const char *suffix); |
| int daemon_avoid_alias(const char *path); |
| |
| /* |
| * These functions match their is_hfs_dotgit() counterparts; see utf8.h for |
| * details. |
| */ |
| int is_ntfs_dotgit(const char *name); |
| int is_ntfs_dotgitmodules(const char *name); |
| int is_ntfs_dotgitignore(const char *name); |
| int is_ntfs_dotgitattributes(const char *name); |
| |
| /* |
| * Returns true iff "str" could be confused as a command-line option when |
| * passed to a sub-program like "ssh". Note that this has nothing to do with |
| * shell-quoting, which should be handled separately; we're assuming here that |
| * the string makes it verbatim to the sub-program. |
| */ |
| int looks_like_command_line_option(const char *str); |
| |
| /** |
| * Return a newly allocated string with the evaluation of |
| * "$XDG_CONFIG_HOME/git/$filename" if $XDG_CONFIG_HOME is non-empty, otherwise |
| * "$HOME/.config/git/$filename". Return NULL upon error. |
| */ |
| extern char *xdg_config_home(const char *filename); |
| |
| /** |
| * Return a newly allocated string with the evaluation of |
| * "$XDG_CACHE_HOME/git/$filename" if $XDG_CACHE_HOME is non-empty, otherwise |
| * "$HOME/.cache/git/$filename". Return NULL upon error. |
| */ |
| extern char *xdg_cache_home(const char *filename); |
| |
| extern int git_open_cloexec(const char *name, int flags); |
| #define git_open(name) git_open_cloexec(name, O_RDONLY) |
| extern int unpack_loose_header(git_zstream *stream, unsigned char *map, unsigned long mapsize, void *buffer, unsigned long bufsiz); |
| extern int parse_loose_header(const char *hdr, unsigned long *sizep); |
| |
| extern int check_object_signature(const struct object_id *oid, void *buf, unsigned long size, const char *type); |
| |
| extern int finalize_object_file(const char *tmpfile, const char *filename); |
| |
| /* Helper to check and "touch" a file */ |
| extern int check_and_freshen_file(const char *fn, int freshen); |
| |
| extern const signed char hexval_table[256]; |
| static inline unsigned int hexval(unsigned char c) |
| { |
| return hexval_table[c]; |
| } |
| |
| /* |
| * Convert two consecutive hexadecimal digits into a char. Return a |
| * negative value on error. Don't run over the end of short strings. |
| */ |
| static inline int hex2chr(const char *s) |
| { |
| unsigned int val = hexval(s[0]); |
| return (val & ~0xf) ? val : (val << 4) | hexval(s[1]); |
| } |
| |
| /* Convert to/from hex/sha1 representation */ |
| #define MINIMUM_ABBREV minimum_abbrev |
| #define DEFAULT_ABBREV default_abbrev |
| |
| /* used when the code does not know or care what the default abbrev is */ |
| #define FALLBACK_DEFAULT_ABBREV 7 |
| |
| struct object_context { |
| unsigned mode; |
| /* |
| * symlink_path is only used by get_tree_entry_follow_symlinks, |
| * and only for symlinks that point outside the repository. |
| */ |
| struct strbuf symlink_path; |
| /* |
| * If GET_OID_RECORD_PATH is set, this will record path (if any) |
| * found when resolving the name. The caller is responsible for |
| * releasing the memory. |
| */ |
| char *path; |
| }; |
| |
| #define GET_OID_QUIETLY 01 |
| #define GET_OID_COMMIT 02 |
| #define GET_OID_COMMITTISH 04 |
| #define GET_OID_TREE 010 |
| #define GET_OID_TREEISH 020 |
| #define GET_OID_BLOB 040 |
| #define GET_OID_FOLLOW_SYMLINKS 0100 |
| #define GET_OID_RECORD_PATH 0200 |
| #define GET_OID_ONLY_TO_DIE 04000 |
| |
| #define GET_OID_DISAMBIGUATORS \ |
| (GET_OID_COMMIT | GET_OID_COMMITTISH | \ |
| GET_OID_TREE | GET_OID_TREEISH | \ |
| GET_OID_BLOB) |
| |
| enum get_oid_result { |
| FOUND = 0, |
| MISSING_OBJECT = -1, /* The requested object is missing */ |
| SHORT_NAME_AMBIGUOUS = -2, |
| /* The following only apply when symlinks are followed */ |
| DANGLING_SYMLINK = -4, /* |
| * The initial symlink is there, but |
| * (transitively) points to a missing |
| * in-tree file |
| */ |
| SYMLINK_LOOP = -5, |
| NOT_DIR = -6, /* |
| * Somewhere along the symlink chain, a path is |
| * requested which contains a file as a |
| * non-final element. |
| */ |
| }; |
| |
| extern int get_oid(const char *str, struct object_id *oid); |
| extern int get_oid_commit(const char *str, struct object_id *oid); |
| extern int get_oid_committish(const char *str, struct object_id *oid); |
| extern int get_oid_tree(const char *str, struct object_id *oid); |
| extern int get_oid_treeish(const char *str, struct object_id *oid); |
| extern int get_oid_blob(const char *str, struct object_id *oid); |
| extern void maybe_die_on_misspelt_object_name(const char *name, const char *prefix); |
| extern enum get_oid_result get_oid_with_context(struct repository *repo, const char *str, |
| unsigned flags, struct object_id *oid, |
| struct object_context *oc); |
| |
| typedef int each_abbrev_fn(const struct object_id *oid, void *); |
| extern int for_each_abbrev(const char *prefix, each_abbrev_fn, void *); |
| |
| extern int set_disambiguate_hint_config(const char *var, const char *value); |
| |
| /* |
| * Try to read a SHA1 in hexadecimal format from the 40 characters |
| * starting at hex. Write the 20-byte result to sha1 in binary form. |
| * Return 0 on success. Reading stops if a NUL is encountered in the |
| * input, so it is safe to pass this function an arbitrary |
| * null-terminated string. |
| */ |
| extern int get_sha1_hex(const char *hex, unsigned char *sha1); |
| extern int get_oid_hex(const char *hex, struct object_id *sha1); |
| |
| /* |
| * Read `len` pairs of hexadecimal digits from `hex` and write the |
| * values to `binary` as `len` bytes. Return 0 on success, or -1 if |
| * the input does not consist of hex digits). |
| */ |
| extern int hex_to_bytes(unsigned char *binary, const char *hex, size_t len); |
| |
| /* |
| * Convert a binary hash to its hex equivalent. The `_r` variant is reentrant, |
| * and writes the NUL-terminated output to the buffer `out`, which must be at |
| * least `GIT_MAX_HEXSZ + 1` bytes, and returns a pointer to out for |
| * convenience. |
| * |
| * The non-`_r` variant returns a static buffer, but uses a ring of 4 |
| * buffers, making it safe to make multiple calls for a single statement, like: |
| * |
| * printf("%s -> %s", sha1_to_hex(one), sha1_to_hex(two)); |
| */ |
| char *hash_to_hex_algop_r(char *buffer, const unsigned char *hash, const struct git_hash_algo *); |
| char *sha1_to_hex_r(char *out, const unsigned char *sha1); |
| char *oid_to_hex_r(char *out, const struct object_id *oid); |
| char *hash_to_hex_algop(const unsigned char *hash, const struct git_hash_algo *); /* static buffer result! */ |
| char *sha1_to_hex(const unsigned char *sha1); /* same static buffer */ |
| char *hash_to_hex(const unsigned char *hash); /* same static buffer */ |
| char *oid_to_hex(const struct object_id *oid); /* same static buffer */ |
| |
| /* |
| * Parse a 40-character hexadecimal object ID starting from hex, updating the |
| * pointer specified by end when parsing stops. The resulting object ID is |
| * stored in oid. Returns 0 on success. Parsing will stop on the first NUL or |
| * other invalid character. end is only updated on success; otherwise, it is |
| * unmodified. |
| */ |
| extern int parse_oid_hex(const char *hex, struct object_id *oid, const char **end); |
| |
| /* |
| * This reads short-hand syntax that not only evaluates to a commit |
| * object name, but also can act as if the end user spelled the name |
| * of the branch from the command line. |
| * |
| * - "@{-N}" finds the name of the Nth previous branch we were on, and |
| * places the name of the branch in the given buf and returns the |
| * number of characters parsed if successful. |
| * |
| * - "<branch>@{upstream}" finds the name of the other ref that |
| * <branch> is configured to merge with (missing <branch> defaults |
| * to the current branch), and places the name of the branch in the |
| * given buf and returns the number of characters parsed if |
| * successful. |
| * |
| * If the input is not of the accepted format, it returns a negative |
| * number to signal an error. |
| * |
| * If the input was ok but there are not N branch switches in the |
| * reflog, it returns 0. |
| * |
| * If "allowed" is non-zero, it is a treated as a bitfield of allowable |
| * expansions: local branches ("refs/heads/"), remote branches |
| * ("refs/remotes/"), or "HEAD". If no "allowed" bits are set, any expansion is |
| * allowed, even ones to refs outside of those namespaces. |
| */ |
| #define INTERPRET_BRANCH_LOCAL (1<<0) |
| #define INTERPRET_BRANCH_REMOTE (1<<1) |
| #define INTERPRET_BRANCH_HEAD (1<<2) |
| extern int interpret_branch_name(const char *str, int len, struct strbuf *, |
| unsigned allowed); |
| extern int get_oid_mb(const char *str, struct object_id *oid); |
| |
| extern int validate_headref(const char *ref); |
| |
| extern int base_name_compare(const char *name1, int len1, int mode1, const char *name2, int len2, int mode2); |
| extern int df_name_compare(const char *name1, int len1, int mode1, const char *name2, int len2, int mode2); |
| extern int name_compare(const char *name1, size_t len1, const char *name2, size_t len2); |
| extern int cache_name_stage_compare(const char *name1, int len1, int stage1, const char *name2, int len2, int stage2); |
| |
| extern void *read_object_with_reference(const struct object_id *oid, |
| const char *required_type, |
| unsigned long *size, |
| struct object_id *oid_ret); |
| |
| extern struct object *peel_to_type(const char *name, int namelen, |
| struct object *o, enum object_type); |
| |
| enum date_mode_type { |
| DATE_NORMAL = 0, |
| DATE_HUMAN, |
| DATE_RELATIVE, |
| DATE_SHORT, |
| DATE_ISO8601, |
| DATE_ISO8601_STRICT, |
| DATE_RFC2822, |
| DATE_STRFTIME, |
| DATE_RAW, |
| DATE_UNIX |
| }; |
| |
| struct date_mode { |
| enum date_mode_type type; |
| const char *strftime_fmt; |
| int local; |
| }; |
| |
| /* |
| * Convenience helper for passing a constant type, like: |
| * |
| * show_date(t, tz, DATE_MODE(NORMAL)); |
| */ |
| #define DATE_MODE(t) date_mode_from_type(DATE_##t) |
| struct date_mode *date_mode_from_type(enum date_mode_type type); |
| |
| const char *show_date(timestamp_t time, int timezone, const struct date_mode *mode); |
| void show_date_relative(timestamp_t time, const struct timeval *now, |
| struct strbuf *timebuf); |
| void show_date_human(timestamp_t time, int tz, const struct timeval *now, |
| struct strbuf *timebuf); |
| int parse_date(const char *date, struct strbuf *out); |
| int parse_date_basic(const char *date, timestamp_t *timestamp, int *offset); |
| int parse_expiry_date(const char *date, timestamp_t *timestamp); |
| void datestamp(struct strbuf *out); |
| #define approxidate(s) approxidate_careful((s), NULL) |
| timestamp_t approxidate_careful(const char *, int *); |
| timestamp_t approxidate_relative(const char *date, const struct timeval *now); |
| void parse_date_format(const char *format, struct date_mode *mode); |
| int date_overflows(timestamp_t date); |
| |
| #define IDENT_STRICT 1 |
| #define IDENT_NO_DATE 2 |
| #define IDENT_NO_NAME 4 |
| |
| enum want_ident { |
| WANT_BLANK_IDENT, |
| WANT_AUTHOR_IDENT, |
| WANT_COMMITTER_IDENT |
| }; |
| |
| extern const char *git_author_info(int); |
| extern const char *git_committer_info(int); |
| extern const char *fmt_ident(const char *name, const char *email, |
| enum want_ident whose_ident, |
| const char *date_str, int); |
| extern const char *fmt_name(enum want_ident); |
| extern const char *ident_default_name(void); |
| extern const char *ident_default_email(void); |
| extern const char *git_editor(void); |
| extern const char *git_sequence_editor(void); |
| extern const char *git_pager(int stdout_is_tty); |
| extern int is_terminal_dumb(void); |
| extern int git_ident_config(const char *, const char *, void *); |
| extern void reset_ident_date(void); |
| |
| struct ident_split { |
| const char *name_begin; |
| const char *name_end; |
| const char *mail_begin; |
| const char *mail_end; |
| const char *date_begin; |
| const char *date_end; |
| const char *tz_begin; |
| const char *tz_end; |
| }; |
| /* |
| * Signals an success with 0, but time part of the result may be NULL |
| * if the input lacks timestamp and zone |
| */ |
| extern int split_ident_line(struct ident_split *, const char *, int); |
| |
| /* |
| * Like show_date, but pull the timestamp and tz parameters from |
| * the ident_split. It will also sanity-check the values and produce |
| * a well-known sentinel date if they appear bogus. |
| */ |
| const char *show_ident_date(const struct ident_split *id, |
| const struct date_mode *mode); |
| |
| /* |
| * Compare split idents for equality or strict ordering. Note that we |
| * compare only the ident part of the line, ignoring any timestamp. |
| * |
| * Because there are two fields, we must choose one as the primary key; we |
| * currently arbitrarily pick the email. |
| */ |
| extern int ident_cmp(const struct ident_split *, const struct ident_split *); |
| |
| struct checkout { |
| struct index_state *istate; |
| const char *base_dir; |
| int base_dir_len; |
| struct delayed_checkout *delayed_checkout; |
| unsigned force:1, |
| quiet:1, |
| not_new:1, |
| clone:1, |
| refresh_cache:1; |
| }; |
| #define CHECKOUT_INIT { NULL, "" } |
| |
| #define TEMPORARY_FILENAME_LENGTH 25 |
| extern int checkout_entry(struct cache_entry *ce, const struct checkout *state, char *topath, int *nr_checkouts); |
| extern void enable_delayed_checkout(struct checkout *state); |
| extern int finish_delayed_checkout(struct checkout *state, int *nr_checkouts); |
| /* |
| * Unlink the last component and schedule the leading directories for |
| * removal, such that empty directories get removed. |
| */ |
| extern void unlink_entry(const struct cache_entry *ce); |
| |
| struct cache_def { |
| struct strbuf path; |
| int flags; |
| int track_flags; |
| int prefix_len_stat_func; |
| }; |
| #define CACHE_DEF_INIT { STRBUF_INIT, 0, 0, 0 } |
| static inline void cache_def_clear(struct cache_def *cache) |
| { |
| strbuf_release(&cache->path); |
| } |
| |
| extern int has_symlink_leading_path(const char *name, int len); |
| extern int threaded_has_symlink_leading_path(struct cache_def *, const char *, int); |
| extern int check_leading_path(const char *name, int len); |
| extern int has_dirs_only_path(const char *name, int len, int prefix_len); |
| extern void schedule_dir_for_removal(const char *name, int len); |
| extern void remove_scheduled_dirs(void); |
| |
| struct pack_window { |
| struct pack_window *next; |
| unsigned char *base; |
| off_t offset; |
| size_t len; |
| unsigned int last_used; |
| unsigned int inuse_cnt; |
| }; |
| |
| struct pack_entry { |
| off_t offset; |
| struct packed_git *p; |
| }; |
| |
| /* |
| * Create a temporary file rooted in the object database directory, or |
| * die on failure. The filename is taken from "pattern", which should have the |
| * usual "XXXXXX" trailer, and the resulting filename is written into the |
| * "template" buffer. Returns the open descriptor. |
| */ |
| extern int odb_mkstemp(struct strbuf *temp_filename, const char *pattern); |
| |
| /* |
| * Create a pack .keep file named "name" (which should generally be the output |
| * of odb_pack_name). Returns a file descriptor opened for writing, or -1 on |
| * error. |
| */ |
| extern int odb_pack_keep(const char *name); |
| |
| /* |
| * Set this to 0 to prevent oid_object_info_extended() from fetching missing |
| * blobs. This has a difference only if extensions.partialClone is set. |
| * |
| * Its default value is 1. |
| */ |
| extern int fetch_if_missing; |
| |
| /* Dumb servers support */ |
| extern int update_server_info(int); |
| |
| extern const char *get_log_output_encoding(void); |
| extern const char *get_commit_output_encoding(void); |
| |
| /* |
| * This is a hack for test programs like test-dump-untracked-cache to |
| * ensure that they do not modify the untracked cache when reading it. |
| * Do not use it otherwise! |
| */ |
| extern int ignore_untracked_cache_config; |
| |
| extern int committer_ident_sufficiently_given(void); |
| extern int author_ident_sufficiently_given(void); |
| |
| extern const char *git_commit_encoding; |
| extern const char *git_log_output_encoding; |
| extern const char *git_mailmap_file; |
| extern const char *git_mailmap_blob; |
| |
| /* IO helper functions */ |
| extern void maybe_flush_or_die(FILE *, const char *); |
| __attribute__((format (printf, 2, 3))) |
| extern void fprintf_or_die(FILE *, const char *fmt, ...); |
| |
| #define COPY_READ_ERROR (-2) |
| #define COPY_WRITE_ERROR (-3) |
| extern int copy_fd(int ifd, int ofd); |
| extern int copy_file(const char *dst, const char *src, int mode); |
| extern int copy_file_with_time(const char *dst, const char *src, int mode); |
| |
| extern void write_or_die(int fd, const void *buf, size_t count); |
| extern void fsync_or_die(int fd, const char *); |
| |
| extern ssize_t read_in_full(int fd, void *buf, size_t count); |
| extern ssize_t write_in_full(int fd, const void *buf, size_t count); |
| extern ssize_t pread_in_full(int fd, void *buf, size_t count, off_t offset); |
| |
| static inline ssize_t write_str_in_full(int fd, const char *str) |
| { |
| return write_in_full(fd, str, strlen(str)); |
| } |
| |
| /** |
| * Open (and truncate) the file at path, write the contents of buf to it, |
| * and close it. Dies if any errors are encountered. |
| */ |
| extern void write_file_buf(const char *path, const char *buf, size_t len); |
| |
| /** |
| * Like write_file_buf(), but format the contents into a buffer first. |
| * Additionally, write_file() will append a newline if one is not already |
| * present, making it convenient to write text files: |
| * |
| * write_file(path, "counter: %d", ctr); |
| */ |
| __attribute__((format (printf, 2, 3))) |
| extern void write_file(const char *path, const char *fmt, ...); |
| |
| /* pager.c */ |
| extern void setup_pager(void); |
| extern int pager_in_use(void); |
| extern int pager_use_color; |
| extern int term_columns(void); |
| extern int decimal_width(uintmax_t); |
| extern int check_pager_config(const char *cmd); |
| extern void prepare_pager_args(struct child_process *, const char *pager); |
| |
| extern const char *editor_program; |
| extern const char *askpass_program; |
| extern const char *excludes_file; |
| |
| /* base85 */ |
| int decode_85(char *dst, const char *line, int linelen); |
| void encode_85(char *buf, const unsigned char *data, int bytes); |
| |
| /* pkt-line.c */ |
| void packet_trace_identity(const char *prog); |
| |
| /* add */ |
| /* |
| * return 0 if success, 1 - if addition of a file failed and |
| * ADD_FILES_IGNORE_ERRORS was specified in flags |
| */ |
| int add_files_to_cache(const char *prefix, const struct pathspec *pathspec, int flags); |
| |
| /* diff.c */ |
| extern int diff_auto_refresh_index; |
| |
| /* match-trees.c */ |
| void shift_tree(const struct object_id *, const struct object_id *, struct object_id *, int); |
| void shift_tree_by(const struct object_id *, const struct object_id *, struct object_id *, const char *); |
| |
| /* |
| * whitespace rules. |
| * used by both diff and apply |
| * last two digits are tab width |
| */ |
| #define WS_BLANK_AT_EOL 0100 |
| #define WS_SPACE_BEFORE_TAB 0200 |
| #define WS_INDENT_WITH_NON_TAB 0400 |
| #define WS_CR_AT_EOL 01000 |
| #define WS_BLANK_AT_EOF 02000 |
| #define WS_TAB_IN_INDENT 04000 |
| #define WS_TRAILING_SPACE (WS_BLANK_AT_EOL|WS_BLANK_AT_EOF) |
| #define WS_DEFAULT_RULE (WS_TRAILING_SPACE|WS_SPACE_BEFORE_TAB|8) |
| #define WS_TAB_WIDTH_MASK 077 |
| /* All WS_* -- when extended, adapt diff.c emit_symbol */ |
| #define WS_RULE_MASK 07777 |
| extern unsigned whitespace_rule_cfg; |
| extern unsigned whitespace_rule(struct index_state *, const char *); |
| extern unsigned parse_whitespace_rule(const char *); |
| extern unsigned ws_check(const char *line, int len, unsigned ws_rule); |
| extern void ws_check_emit(const char *line, int len, unsigned ws_rule, FILE *stream, const char *set, const char *reset, const char *ws); |
| extern char *whitespace_error_string(unsigned ws); |
| extern void ws_fix_copy(struct strbuf *, const char *, int, unsigned, int *); |
| extern int ws_blank_line(const char *line, int len, unsigned ws_rule); |
| #define ws_tab_width(rule) ((rule) & WS_TAB_WIDTH_MASK) |
| |
| /* ls-files */ |
| void overlay_tree_on_index(struct index_state *istate, |
| const char *tree_name, const char *prefix); |
| |
| /* setup.c */ |
| struct startup_info { |
| int have_repository; |
| const char *prefix; |
| }; |
| extern struct startup_info *startup_info; |
| |
| /* merge.c */ |
| struct commit_list; |
| int try_merge_command(struct repository *r, |
| const char *strategy, size_t xopts_nr, |
| const char **xopts, struct commit_list *common, |
| const char *head_arg, struct commit_list *remotes); |
| int checkout_fast_forward(struct repository *r, |
| const struct object_id *from, |
| const struct object_id *to, |
| int overwrite_ignore); |
| |
| |
| int sane_execvp(const char *file, char *const argv[]); |
| |
| /* |
| * A struct to encapsulate the concept of whether a file has changed |
| * since we last checked it. This uses criteria similar to those used |
| * for the index. |
| */ |
| struct stat_validity { |
| struct stat_data *sd; |
| }; |
| |
| void stat_validity_clear(struct stat_validity *sv); |
| |
| /* |
| * Returns 1 if the path is a regular file (or a symlink to a regular |
| * file) and matches the saved stat_validity, 0 otherwise. A missing |
| * or inaccessible file is considered a match if the struct was just |
| * initialized, or if the previous update found an inaccessible file. |
| */ |
| int stat_validity_check(struct stat_validity *sv, const char *path); |
| |
| /* |
| * Update the stat_validity from a file opened at descriptor fd. If |
| * the file is missing, inaccessible, or not a regular file, then |
| * future calls to stat_validity_check will match iff one of those |
| * conditions continues to be true. |
| */ |
| void stat_validity_update(struct stat_validity *sv, int fd); |
| |
| int versioncmp(const char *s1, const char *s2); |
| void sleep_millisec(int millisec); |
| |
| /* |
| * Create a directory and (if share is nonzero) adjust its permissions |
| * according to the shared_repository setting. Only use this for |
| * directories under $GIT_DIR. Don't use it for working tree |
| * directories. |
| */ |
| void safe_create_dir(const char *dir, int share); |
| |
| /* |
| * Should we print an ellipsis after an abbreviated SHA-1 value |
| * when doing diff-raw output or indicating a detached HEAD? |
| */ |
| extern int print_sha1_ellipsis(void); |
| |
| /* Return 1 if the file is empty or does not exists, 0 otherwise. */ |
| extern int is_empty_or_missing_file(const char *filename); |
| |
| #endif /* CACHE_H */ |