#ifndef CACHE_H #define CACHE_H #include "git-compat-util.h" #include "strbuf.h" #include "hash.h" #include "advice.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 #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 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 int unable_to_lock_error(const char *path, int err); 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); extern char *expand_user_path(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); #define approxidate(s) approxidate_careful((s), NULL) unsigned long approxidate_careful(const char *, int *); 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_pathname(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 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 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 *); 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); static inline ssize_t write_str_in_full(int fd, const char *str) { return write_in_full(fd, str, strlen(str)); } /* 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_BLANK_AT_EOL 01 #define WS_SPACE_BEFORE_TAB 02 #define WS_INDENT_WITH_NON_TAB 04 #define WS_CR_AT_EOL 010 #define WS_BLANK_AT_EOF 020 #define WS_TRAILING_SPACE (WS_BLANK_AT_EOL|WS_BLANK_AT_EOF) #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 */