| #ifndef CACHE_H |
| #define CACHE_H |
| |
| #include "git-compat-util.h" |
| #include "strbuf.h" |
| #include "hash.h" |
| |
| #include SHA1_HEADER |
| #ifndef git_SHA_CTX |
| #define git_SHA_CTX SHA_CTX |
| #define git_SHA1_Init SHA1_Init |
| #define git_SHA1_Update SHA1_Update |
| #define git_SHA1_Final SHA1_Final |
| #endif |
| |
| #include <zlib.h> |
| #if defined(NO_DEFLATE_BOUND) || ZLIB_VERNUM < 0x1200 |
| #define deflateBound(c,s) ((s) + (((s) + 7) >> 3) + (((s) + 63) >> 6) + 11) |
| #endif |
| |
| void git_inflate_init(z_streamp strm); |
| void git_inflate_end(z_streamp strm); |
| int git_inflate(z_streamp strm, int flush); |
| |
| #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 |
| * |
| * NOTE! We *really* shouldn't depend on the S_IFxxx macros |
| * always having the same values everywhere. We should use |
| * our internal git values for these things, and then we can |
| * translate that to the OS-specific value. It just so |
| * happens that everybody shares the same bit representation |
| * in the UNIX world (and apparently wider too..) |
| */ |
| #define S_IFGITLINK 0160000 |
| #define S_ISGITLINK(m) (((m) & S_IFMT) == S_IFGITLINK) |
| |
| /* |
| * 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 { |
| unsigned int hdr_signature; |
| unsigned int hdr_version; |
| unsigned int hdr_entries; |
| }; |
| |
| /* |
| * 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 { |
| unsigned int sec; |
| unsigned int nsec; |
| }; |
| |
| /* |
| * dev/ino/uid/gid/size are also just tracked to the low 32 bits |
| * Again - this is just a (very strong in practice) heuristic that |
| * the inode hasn't changed. |
| * |
| * We save the fields in big-endian order to allow using the |
| * index file over NFS transparently. |
| */ |
| struct ondisk_cache_entry { |
| struct cache_time ctime; |
| struct cache_time mtime; |
| unsigned int dev; |
| unsigned int ino; |
| unsigned int mode; |
| unsigned int uid; |
| unsigned int gid; |
| unsigned int size; |
| unsigned char sha1[20]; |
| unsigned short flags; |
| char name[FLEX_ARRAY]; /* more */ |
| }; |
| |
| /* |
| * This struct is used when CE_EXTENDED bit is 1 |
| * The struct must match ondisk_cache_entry exactly from |
| * ctime till flags |
| */ |
| struct ondisk_cache_entry_extended { |
| struct cache_time ctime; |
| struct cache_time mtime; |
| unsigned int dev; |
| unsigned int ino; |
| unsigned int mode; |
| unsigned int uid; |
| unsigned int gid; |
| unsigned int size; |
| unsigned char sha1[20]; |
| unsigned short flags; |
| unsigned short flags2; |
| char name[FLEX_ARRAY]; /* more */ |
| }; |
| |
| struct cache_entry { |
| struct cache_time ce_ctime; |
| struct cache_time ce_mtime; |
| unsigned int ce_dev; |
| unsigned int ce_ino; |
| unsigned int ce_mode; |
| unsigned int ce_uid; |
| unsigned int ce_gid; |
| unsigned int ce_size; |
| unsigned int ce_flags; |
| unsigned char sha1[20]; |
| struct cache_entry *next; |
| char name[FLEX_ARRAY]; /* more */ |
| }; |
| |
| #define CE_NAMEMASK (0x0fff) |
| #define CE_STAGEMASK (0x3000) |
| #define CE_EXTENDED (0x4000) |
| #define CE_VALID (0x8000) |
| #define CE_STAGESHIFT 12 |
| |
| /* |
| * Range 0xFFFF0000 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 (0x10000) |
| #define CE_REMOVE (0x20000) |
| #define CE_UPTODATE (0x40000) |
| #define CE_ADDED (0x80000) |
| |
| #define CE_HASHED (0x100000) |
| #define CE_UNHASHED (0x200000) |
| |
| /* |
| * Extended on-disk flags |
| */ |
| #define CE_INTENT_TO_ADD 0x20000000 |
| /* CE_EXTENDED2 is for future extension */ |
| #define CE_EXTENDED2 0x80000000 |
| |
| #define CE_EXTENDED_FLAGS (CE_INTENT_TO_ADD) |
| |
| /* |
| * 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 |
| |
| /* |
| * Copy the sha1 and stat state of a cache entry from one to |
| * another. But we never change the name, or the hash state! |
| */ |
| #define CE_STATE_MASK (CE_HASHED | CE_UNHASHED) |
| static inline void copy_cache_entry(struct cache_entry *dst, struct cache_entry *src) |
| { |
| unsigned int state = dst->ce_flags & CE_STATE_MASK; |
| |
| /* Don't copy hash chain and name */ |
| memcpy(dst, src, offsetof(struct cache_entry, next)); |
| |
| /* Restore the hash state */ |
| dst->ce_flags = (dst->ce_flags & ~CE_STATE_MASK) | state; |
| } |
| |
| static inline unsigned create_ce_flags(size_t len, unsigned stage) |
| { |
| if (len >= CE_NAMEMASK) |
| len = CE_NAMEMASK; |
| return (len | (stage << CE_STAGESHIFT)); |
| } |
| |
| static inline size_t ce_namelen(const struct cache_entry *ce) |
| { |
| size_t len = ce->ce_flags & CE_NAMEMASK; |
| if (len < CE_NAMEMASK) |
| return len; |
| return strlen(ce->name + CE_NAMEMASK) + CE_NAMEMASK; |
| } |
| |
| #define ce_size(ce) cache_entry_size(ce_namelen(ce)) |
| #define ondisk_ce_size(ce) (((ce)->ce_flags & CE_EXTENDED) ? \ |
| ondisk_cache_entry_extended_size(ce_namelen(ce)) : \ |
| ondisk_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_mark_uptodate(ce) ((ce)->ce_flags |= CE_UPTODATE) |
| |
| #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(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; |
| } |
| #define canon_mode(mode) \ |
| (S_ISREG(mode) ? (S_IFREG | ce_permissions(mode)) : \ |
| S_ISLNK(mode) ? S_IFLNK : S_ISDIR(mode) ? S_IFDIR : S_IFGITLINK) |
| |
| #define flexible_size(STRUCT,len) ((offsetof(struct STRUCT,name) + (len) + 8) & ~7) |
| #define cache_entry_size(len) flexible_size(cache_entry,len) |
| #define ondisk_cache_entry_size(len) flexible_size(ondisk_cache_entry,len) |
| #define ondisk_cache_entry_extended_size(len) flexible_size(ondisk_cache_entry_extended,len) |
| |
| struct index_state { |
| struct cache_entry **cache; |
| unsigned int cache_nr, cache_alloc, cache_changed; |
| struct cache_tree *cache_tree; |
| struct cache_time timestamp; |
| void *alloc; |
| unsigned name_hash_initialized : 1, |
| initialized : 1; |
| struct hash_table name_hash; |
| }; |
| |
| extern struct index_state the_index; |
| |
| /* Name hashing */ |
| extern void add_name_hash(struct index_state *istate, struct cache_entry *ce); |
| /* |
| * We don't actually *remove* it, we can just mark it invalid so that |
| * we won't find it in lookups. |
| * |
| * Not only would we have to search the lists (simple enough), but |
| * we'd also have to rehash other hash buckets in case this makes the |
| * hash bucket empty (common). So it's much better to just mark |
| * it. |
| */ |
| static inline void remove_name_hash(struct cache_entry *ce) |
| { |
| ce->ce_flags |= CE_UNHASHED; |
| } |
| |
| |
| #ifndef NO_THE_INDEX_COMPATIBILITY_MACROS |
| #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() read_index(&the_index) |
| #define read_cache_from(path) read_index_from(&the_index, (path)) |
| #define read_cache_preload(pathspec) read_index_preload(&the_index, (pathspec)) |
| #define is_cache_unborn() is_index_unborn(&the_index) |
| #define read_cache_unmerged() read_index_unmerged(&the_index) |
| #define write_cache(newfd, cache, entries) write_index(&the_index, (newfd)) |
| #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 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_name_exists(name, namelen, igncase) index_name_exists(&the_index, (name), (namelen), (igncase)) |
| #define cache_name_is_other(name, namelen) index_name_is_other(&the_index, (name), (namelen)) |
| #endif |
| |
| 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; |
| } |
| |
| #define GIT_DIR_ENVIRONMENT "GIT_DIR" |
| #define GIT_WORK_TREE_ENVIRONMENT "GIT_WORK_TREE" |
| #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 TEMPLATE_DIR_ENVIRONMENT "GIT_TEMPLATE_DIR" |
| #define CONFIG_ENVIRONMENT "GIT_CONFIG" |
| #define EXEC_PATH_ENVIRONMENT "GIT_EXEC_PATH" |
| #define CEILING_DIRECTORIES_ENVIRONMENT "GIT_CEILING_DIRECTORIES" |
| #define GITATTRIBUTES_FILE ".gitattributes" |
| #define INFOATTRIBUTES_FILE "info/attributes" |
| #define ATTRIBUTE_MACRO_PREFIX "[attr]" |
| |
| 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 int have_git_dir(void); |
| extern const char *get_git_dir(void); |
| extern char *get_object_directory(void); |
| extern char *get_index_file(void); |
| extern char *get_graft_file(void); |
| extern int set_git_dir(const char *path); |
| extern const char *get_git_work_tree(void); |
| extern const char *read_gitfile_gently(const char *path); |
| extern void set_git_work_tree(const char *tree); |
| |
| #define ALTERNATE_DB_ENVIRONMENT "GIT_ALTERNATE_OBJECT_DIRECTORIES" |
| |
| extern const char **get_pathspec(const char *prefix, const char **pathspec); |
| extern void setup_work_tree(void); |
| extern const char *setup_git_directory_gently(int *); |
| extern const char *setup_git_directory(void); |
| extern const char *prefix_path(const char *prefix, int len, const char *path); |
| extern const char *prefix_filename(const char *prefix, int len, const char *path); |
| extern void verify_filename(const char *prefix, const char *name); |
| extern void verify_non_filename(const char *prefix, const char *name); |
| |
| #define INIT_DB_QUIET 0x0001 |
| |
| extern int init_db(const char *template_dir, unsigned int flags); |
| |
| #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' or 'alloc'. |
| */ |
| #define ALLOC_GROW(x, nr, alloc) \ |
| do { \ |
| if ((nr) > alloc) { \ |
| if (alloc_nr(alloc) < (nr)) \ |
| alloc = (nr); \ |
| else \ |
| alloc = alloc_nr(alloc); \ |
| x = xrealloc((x), alloc * sizeof(*(x))); \ |
| } \ |
| } while(0) |
| |
| /* Initialize and use the cache information */ |
| extern int read_index(struct index_state *); |
| extern int read_index_preload(struct index_state *, const char **pathspec); |
| extern int read_index_from(struct index_state *, const char *path); |
| extern int is_index_unborn(struct index_state *); |
| extern int read_index_unmerged(struct index_state *); |
| extern int write_index(struct index_state *, int newfd); |
| extern int discard_index(struct index_state *); |
| extern int unmerged_index(const struct index_state *); |
| extern int verify_path(const char *path); |
| extern struct cache_entry *index_name_exists(struct index_state *istate, const char *name, int namelen, int igncase); |
| 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 */ |
| extern int add_index_entry(struct index_state *, struct cache_entry *ce, int option); |
| extern struct cache_entry *refresh_cache_entry(struct cache_entry *ce, int really); |
| extern void rename_index_entry_at(struct index_state *, int pos, const char *new_name); |
| extern int remove_index_entry_at(struct index_state *, int pos); |
| extern void remove_marked_cache_entries(struct index_state *istate); |
| 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 |
| 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 struct cache_entry *make_cache_entry(unsigned int mode, const unsigned char *sha1, const char *path, int stage, int refresh); |
| extern int ce_same_name(struct cache_entry *a, struct cache_entry *b); |
| extern int index_name_is_other(const struct index_state *, const char *, int); |
| |
| /* 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 |
| extern int ie_match_stat(const struct index_state *, struct cache_entry *, struct stat *, unsigned int); |
| extern int ie_modified(const struct index_state *, struct cache_entry *, struct stat *, unsigned int); |
| |
| extern int ce_path_match(const struct cache_entry *ce, const char **pathspec); |
| extern int index_fd(unsigned char *sha1, int fd, struct stat *st, int write_object, enum object_type type, const char *path); |
| extern int index_path(unsigned char *sha1, const char *path, struct stat *st, int write_object); |
| extern void fill_stat_cache_info(struct cache_entry *ce, struct stat *st); |
| |
| /* "careful lstat()" */ |
| extern int check_path(const char *path, int len, struct stat *st, int skiplen); |
| |
| #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" */ |
| extern int refresh_index(struct index_state *, unsigned int flags, const char **pathspec, char *seen, char *header_msg); |
| |
| struct lock_file { |
| struct lock_file *next; |
| int fd; |
| pid_t owner; |
| char on_list; |
| char filename[PATH_MAX]; |
| }; |
| #define LOCK_DIE_ON_ERROR 1 |
| #define LOCK_NODEREF 2 |
| extern NORETURN void unable_to_lock_index_die(const char *path, int err); |
| extern int hold_lock_file_for_update(struct lock_file *, const char *path, int); |
| extern int hold_lock_file_for_append(struct lock_file *, const char *path, int); |
| extern int commit_lock_file(struct lock_file *); |
| |
| extern int hold_locked_index(struct lock_file *, int); |
| extern int commit_locked_index(struct lock_file *); |
| extern void set_alternate_index_output(const char *); |
| extern int close_lock_file(struct lock_file *); |
| extern void rollback_lock_file(struct lock_file *); |
| extern int delete_ref(const char *, const unsigned char *sha1, int delopt); |
| |
| /* Environment bits from configuration mechanism */ |
| extern int trust_executable_bit; |
| extern int trust_ctime; |
| extern int quote_path_fully; |
| extern int has_symlinks; |
| extern int ignore_case; |
| extern int assume_unchanged; |
| extern int prefer_symlink_refs; |
| extern int log_all_ref_updates; |
| extern int warn_ambiguous_refs; |
| extern int shared_repository; |
| extern const char *apply_default_whitespace; |
| extern const char *apply_default_ignorewhitespace; |
| extern int zlib_compression_level; |
| extern int core_compression_level; |
| extern int core_compression_seen; |
| extern size_t packed_git_window_size; |
| extern size_t packed_git_limit; |
| extern size_t delta_base_cache_limit; |
| extern int auto_crlf; |
| extern int read_replace_refs; |
| extern int fsync_object_files; |
| extern int core_preload_index; |
| |
| enum safe_crlf { |
| SAFE_CRLF_FALSE = 0, |
| SAFE_CRLF_FAIL = 1, |
| SAFE_CRLF_WARN = 2, |
| }; |
| |
| extern enum safe_crlf safe_crlf; |
| |
| enum branch_track { |
| BRANCH_TRACK_UNSPECIFIED = -1, |
| BRANCH_TRACK_NEVER = 0, |
| BRANCH_TRACK_REMOTE, |
| BRANCH_TRACK_ALWAYS, |
| BRANCH_TRACK_EXPLICIT, |
| }; |
| |
| 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_TRACKING, |
| PUSH_DEFAULT_CURRENT, |
| }; |
| |
| extern enum branch_track git_branch_track; |
| 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 int grafts_replace_parents; |
| |
| #define GIT_REPO_VERSION 0 |
| extern int repository_format_version; |
| extern int 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 |
| |
| extern char *mksnpath(char *buf, size_t n, const char *fmt, ...) |
| __attribute__((format (printf, 3, 4))); |
| extern char *git_snpath(char *buf, size_t n, const char *fmt, ...) |
| __attribute__((format (printf, 3, 4))); |
| extern char *git_pathdup(const char *fmt, ...) |
| __attribute__((format (printf, 1, 2))); |
| |
| /* Return a statically allocated filename matching the sha1 signature */ |
| extern char *mkpath(const char *fmt, ...) __attribute__((format (printf, 1, 2))); |
| extern char *git_path(const char *fmt, ...) __attribute__((format (printf, 1, 2))); |
| extern char *sha1_file_name(const unsigned char *sha1); |
| extern char *sha1_pack_name(const unsigned char *sha1); |
| extern char *sha1_pack_index_name(const unsigned char *sha1); |
| extern const char *find_unique_abbrev(const unsigned char *sha1, int); |
| extern const unsigned char null_sha1[20]; |
| static inline int is_null_sha1(const unsigned char *sha1) |
| { |
| return !memcmp(sha1, null_sha1, 20); |
| } |
| static inline int hashcmp(const unsigned char *sha1, const unsigned char *sha2) |
| { |
| return memcmp(sha1, sha2, 20); |
| } |
| static inline void hashcpy(unsigned char *sha_dst, const unsigned char *sha_src) |
| { |
| memcpy(sha_dst, sha_src, 20); |
| } |
| static inline void hashclr(unsigned char *hash) |
| { |
| memset(hash, 0, 20); |
| } |
| extern int is_empty_blob_sha1(const unsigned char *sha1); |
| |
| #define EMPTY_TREE_SHA1_HEX \ |
| "4b825dc642cb6eb9a060e54bf8d69288fbee4904" |
| #define EMPTY_TREE_SHA1_BIN \ |
| "\x4b\x82\x5d\xc6\x42\xcb\x6e\xb9\xa0\x60" \ |
| "\xe5\x4b\xf8\xd6\x92\x88\xfb\xee\x49\x04" |
| |
| int git_mkstemp(char *path, size_t n, const char *template); |
| |
| int git_mkstemps(char *path, size_t n, const char *template, int suffix_len); |
| |
| /* |
| * 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 set_shared_perm(const char *path, int mode); |
| #define adjust_shared_perm(path) set_shared_perm((path), 0) |
| int safe_create_leading_directories(char *path); |
| int safe_create_leading_directories_const(const char *path); |
| char *enter_repo(char *path, int strict); |
| static inline int is_absolute_path(const char *path) |
| { |
| return path[0] == '/' || has_dos_drive_prefix(path); |
| } |
| int is_directory(const char *); |
| const char *make_absolute_path(const char *path); |
| const char *make_nonrelative_path(const char *path); |
| const char *make_relative_path(const char *abs, const char *base); |
| int normalize_path_copy(char *dst, const char *src); |
| int longest_ancestor_length(const char *path, const char *prefix_list); |
| char *strip_path_suffix(const char *path, const char *suffix); |
| |
| /* Read and unpack a sha1 file into memory, write memory to a sha1 file */ |
| extern int sha1_object_info(const unsigned char *, unsigned long *); |
| extern void *read_sha1_file_repl(const unsigned char *sha1, enum object_type *type, unsigned long *size, const unsigned char **replacement); |
| static inline void *read_sha1_file(const unsigned char *sha1, enum object_type *type, unsigned long *size) |
| { |
| return read_sha1_file_repl(sha1, type, size, NULL); |
| } |
| extern int hash_sha1_file(const void *buf, unsigned long len, const char *type, unsigned char *sha1); |
| extern int write_sha1_file(void *buf, unsigned long len, const char *type, unsigned char *return_sha1); |
| extern int pretend_sha1_file(void *, unsigned long, enum object_type, unsigned char *); |
| extern int force_object_loose(const unsigned char *sha1, time_t mtime); |
| |
| /* global flag to enable extra checks when accessing packed objects */ |
| extern int do_check_packed_object_crc; |
| |
| extern int check_sha1_signature(const unsigned char *sha1, void *buf, unsigned long size, const char *type); |
| |
| extern int move_temp_to_file(const char *tmpfile, const char *filename); |
| |
| extern int has_sha1_pack(const unsigned char *sha1); |
| extern int has_sha1_file(const unsigned char *sha1); |
| extern int has_loose_object_nonlocal(const unsigned char *sha1); |
| |
| extern int has_pack_file(const unsigned char *sha1); |
| extern int has_pack_index(const unsigned char *sha1); |
| |
| extern const signed char hexval_table[256]; |
| static inline unsigned int hexval(unsigned char c) |
| { |
| return hexval_table[c]; |
| } |
| |
| /* Convert to/from hex/sha1 representation */ |
| #define MINIMUM_ABBREV 4 |
| #define DEFAULT_ABBREV 7 |
| |
| extern int get_sha1(const char *str, unsigned char *sha1); |
| extern int get_sha1_with_mode(const char *str, unsigned char *sha1, unsigned *mode); |
| extern int get_sha1_hex(const char *hex, unsigned char *sha1); |
| extern char *sha1_to_hex(const unsigned char *sha1); /* static buffer result! */ |
| extern int read_ref(const char *filename, unsigned char *sha1); |
| extern const char *resolve_ref(const char *path, unsigned char *sha1, int, int *); |
| extern int dwim_ref(const char *str, int len, unsigned char *sha1, char **ref); |
| extern int dwim_log(const char *str, int len, unsigned char *sha1, char **ref); |
| extern int interpret_branch_name(const char *str, struct strbuf *); |
| |
| extern int refname_match(const char *abbrev_name, const char *full_name, const char **rules); |
| extern const char *ref_rev_parse_rules[]; |
| extern const char *ref_fetch_rules[]; |
| |
| extern int create_symref(const char *ref, const char *refs_heads_master, const char *logmsg); |
| 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 cache_name_compare(const char *name1, int len1, const char *name2, int len2); |
| |
| extern void *read_object_with_reference(const unsigned char *sha1, |
| const char *required_type, |
| unsigned long *size, |
| unsigned char *sha1_ret); |
| |
| extern struct object *peel_to_type(const char *name, int namelen, |
| struct object *o, enum object_type); |
| |
| enum date_mode { |
| DATE_NORMAL = 0, |
| DATE_RELATIVE, |
| DATE_SHORT, |
| DATE_LOCAL, |
| DATE_ISO8601, |
| DATE_RFC2822, |
| DATE_RAW |
| }; |
| |
| const char *show_date(unsigned long time, int timezone, enum date_mode mode); |
| const char *show_date_relative(unsigned long time, int tz, |
| const struct timeval *now, |
| char *timebuf, |
| size_t timebuf_size); |
| int parse_date(const char *date, char *buf, int bufsize); |
| void datestamp(char *buf, int bufsize); |
| unsigned long approxidate(const char *); |
| unsigned long approxidate_relative(const char *date, const struct timeval *now); |
| enum date_mode parse_date_format(const char *format); |
| |
| #define IDENT_WARN_ON_NO_NAME 1 |
| #define IDENT_ERROR_ON_NO_NAME 2 |
| #define IDENT_NO_DATE 4 |
| 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, const char *date_str, int); |
| extern const char *fmt_name(const char *name, const char *email); |
| |
| struct checkout { |
| const char *base_dir; |
| int base_dir_len; |
| unsigned force:1, |
| quiet:1, |
| not_new:1, |
| refresh_cache:1; |
| }; |
| |
| extern int checkout_entry(struct cache_entry *ce, const struct checkout *state, char *topath); |
| |
| struct cache_def { |
| char path[PATH_MAX + 1]; |
| int len; |
| int flags; |
| int track_flags; |
| int prefix_len_stat_func; |
| }; |
| |
| 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 has_symlink_or_noent_leading_path(const char *name, int len); |
| extern int has_dirs_only_path(const char *name, int len, int prefix_len); |
| extern void invalidate_lstat_cache(const char *name, int len); |
| extern void clear_lstat_cache(void); |
| extern void schedule_dir_for_removal(const char *name, int len); |
| extern void remove_scheduled_dirs(void); |
| |
| extern struct alternate_object_database { |
| struct alternate_object_database *next; |
| char *name; |
| char base[FLEX_ARRAY]; /* more */ |
| } *alt_odb_list; |
| extern void prepare_alt_odb(void); |
| extern void add_to_alternates_file(const char *reference); |
| typedef int alt_odb_fn(struct alternate_object_database *, void *); |
| extern void foreach_alt_odb(alt_odb_fn, 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; |
| }; |
| |
| extern struct packed_git { |
| struct packed_git *next; |
| struct pack_window *windows; |
| off_t pack_size; |
| const void *index_data; |
| size_t index_size; |
| uint32_t num_objects; |
| uint32_t num_bad_objects; |
| unsigned char *bad_object_sha1; |
| int index_version; |
| time_t mtime; |
| int pack_fd; |
| unsigned pack_local:1, |
| pack_keep:1; |
| unsigned char sha1[20]; |
| /* something like ".git/objects/pack/xxxxx.pack" */ |
| char pack_name[FLEX_ARRAY]; /* more */ |
| } *packed_git; |
| |
| struct pack_entry { |
| off_t offset; |
| unsigned char sha1[20]; |
| struct packed_git *p; |
| }; |
| |
| struct ref { |
| struct ref *next; |
| unsigned char old_sha1[20]; |
| unsigned char new_sha1[20]; |
| char *symref; |
| unsigned int force:1, |
| merge:1, |
| nonfastforward:1, |
| deletion:1; |
| enum { |
| REF_STATUS_NONE = 0, |
| REF_STATUS_OK, |
| REF_STATUS_REJECT_NONFASTFORWARD, |
| REF_STATUS_REJECT_NODELETE, |
| REF_STATUS_UPTODATE, |
| REF_STATUS_REMOTE_REJECT, |
| REF_STATUS_EXPECTING_REPORT, |
| } status; |
| char *remote_status; |
| struct ref *peer_ref; /* when renaming */ |
| char name[FLEX_ARRAY]; /* more */ |
| }; |
| |
| #define REF_NORMAL (1u << 0) |
| #define REF_HEADS (1u << 1) |
| #define REF_TAGS (1u << 2) |
| |
| extern struct ref *find_ref_by_name(const struct ref *list, const char *name); |
| |
| #define CONNECT_VERBOSE (1u << 0) |
| extern struct child_process *git_connect(int fd[2], const char *url, const char *prog, int flags); |
| extern int finish_connect(struct child_process *conn); |
| extern int path_match(const char *path, int nr, char **match); |
| extern int get_ack(int fd, unsigned char *result_sha1); |
| struct extra_have_objects { |
| int nr, alloc; |
| unsigned char (*array)[20]; |
| }; |
| extern struct ref **get_remote_heads(int in, struct ref **list, int nr_match, char **match, unsigned int flags, struct extra_have_objects *); |
| extern int server_supports(const char *feature); |
| |
| extern struct packed_git *parse_pack_index(unsigned char *sha1); |
| |
| extern void prepare_packed_git(void); |
| extern void reprepare_packed_git(void); |
| extern void install_packed_git(struct packed_git *pack); |
| |
| extern struct packed_git *find_sha1_pack(const unsigned char *sha1, |
| struct packed_git *packs); |
| |
| extern void pack_report(void); |
| extern int open_pack_index(struct packed_git *); |
| extern unsigned char *use_pack(struct packed_git *, struct pack_window **, off_t, unsigned int *); |
| extern void close_pack_windows(struct packed_git *); |
| extern void unuse_pack(struct pack_window **); |
| extern void free_pack_by_name(const char *); |
| extern void clear_delta_base_cache(void); |
| extern struct packed_git *add_packed_git(const char *, int, int); |
| extern const unsigned char *nth_packed_object_sha1(struct packed_git *, uint32_t); |
| extern off_t nth_packed_object_offset(const struct packed_git *, uint32_t); |
| extern off_t find_pack_entry_one(const unsigned char *, struct packed_git *); |
| extern void *unpack_entry(struct packed_git *, off_t, enum object_type *, unsigned long *); |
| extern unsigned long unpack_object_header_buffer(const unsigned char *buf, unsigned long len, enum object_type *type, unsigned long *sizep); |
| extern unsigned long get_size_from_delta(struct packed_git *, struct pack_window **, off_t); |
| extern const char *packed_object_info_detail(struct packed_git *, off_t, unsigned long *, unsigned long *, unsigned int *, unsigned char *); |
| |
| /* Dumb servers support */ |
| extern int update_server_info(int); |
| |
| typedef int (*config_fn_t)(const char *, const char *, void *); |
| extern int git_default_config(const char *, const char *, void *); |
| extern int git_config_from_file(config_fn_t fn, const char *, void *); |
| extern int git_config(config_fn_t fn, void *); |
| extern int git_parse_ulong(const char *, unsigned long *); |
| extern int git_config_int(const char *, const char *); |
| extern unsigned long git_config_ulong(const char *, const char *); |
| extern int git_config_bool_or_int(const char *, const char *, int *); |
| extern int git_config_bool(const char *, const char *); |
| extern int git_config_string(const char **, const char *, const char *); |
| extern int git_config_set(const char *, const char *); |
| extern int git_config_set_multivar(const char *, const char *, const char *, int); |
| extern int git_config_rename_section(const char *, const char *); |
| extern const char *git_etc_gitconfig(void); |
| extern int check_repository_format_version(const char *var, const char *value, void *cb); |
| extern int git_config_system(void); |
| extern int git_config_global(void); |
| extern int config_error_nonbool(const char *); |
| extern const char *config_exclusive_filename; |
| |
| #define MAX_GITNAME (1000) |
| extern char git_default_email[MAX_GITNAME]; |
| extern char git_default_name[MAX_GITNAME]; |
| extern int user_ident_explicitly_given; |
| |
| extern const char *git_commit_encoding; |
| extern const char *git_log_output_encoding; |
| extern const char *git_mailmap_file; |
| |
| /* IO helper functions */ |
| extern void maybe_flush_or_die(FILE *, const char *); |
| extern int copy_fd(int ifd, int ofd); |
| extern int copy_file(const char *dst, const char *src, int mode); |
| 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 void write_or_die(int fd, const void *buf, size_t count); |
| extern int write_or_whine(int fd, const void *buf, size_t count, const char *msg); |
| extern int write_or_whine_pipe(int fd, const void *buf, size_t count, const char *msg); |
| extern void fsync_or_die(int fd, const char *); |
| |
| /* pager.c */ |
| extern void setup_pager(void); |
| extern const char *pager_program; |
| extern int pager_in_use(void); |
| extern int pager_use_color; |
| |
| extern const char *editor_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); |
| |
| /* alloc.c */ |
| extern void *alloc_blob_node(void); |
| extern void *alloc_tree_node(void); |
| extern void *alloc_commit_node(void); |
| extern void *alloc_tag_node(void); |
| extern void *alloc_object_node(void); |
| extern void alloc_report(void); |
| |
| /* trace.c */ |
| extern void trace_printf(const char *format, ...); |
| extern void trace_argv_printf(const char **argv, const char *format, ...); |
| |
| /* convert.c */ |
| /* returns 1 if *dst was used */ |
| extern int convert_to_git(const char *path, const char *src, size_t len, |
| struct strbuf *dst, enum safe_crlf checksafe); |
| extern int convert_to_working_tree(const char *path, const char *src, size_t len, struct strbuf *dst); |
| |
| /* 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 char **pathspec, int flags); |
| |
| /* diff.c */ |
| extern int diff_auto_refresh_index; |
| |
| /* match-trees.c */ |
| void shift_tree(const unsigned char *, const unsigned char *, unsigned char *, int); |
| |
| /* |
| * whitespace rules. |
| * used by both diff and apply |
| */ |
| #define WS_TRAILING_SPACE 01 |
| #define WS_SPACE_BEFORE_TAB 02 |
| #define WS_INDENT_WITH_NON_TAB 04 |
| #define WS_CR_AT_EOL 010 |
| #define WS_DEFAULT_RULE (WS_TRAILING_SPACE|WS_SPACE_BEFORE_TAB) |
| extern unsigned whitespace_rule_cfg; |
| extern unsigned whitespace_rule(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 int ws_fix_copy(char *, const char *, int, unsigned, int *); |
| extern int ws_blank_line(const char *line, int len, unsigned ws_rule); |
| |
| /* ls-files */ |
| int report_path_error(const char *ps_matched, const char **pathspec, int prefix_offset); |
| void overlay_tree_on_cache(const char *tree_name, const char *prefix); |
| |
| char *alias_lookup(const char *alias); |
| int split_cmdline(char *cmdline, const char ***argv); |
| |
| #endif /* CACHE_H */ |