1#ifndef CACHE_H 2#define CACHE_H 3 4#include"git-compat-util.h" 5#include"strbuf.h" 6#include"hashmap.h" 7#include"advice.h" 8#include"gettext.h" 9#include"convert.h" 10#include"trace.h" 11#include"string-list.h" 12#include"pack-revindex.h" 13 14#include SHA1_HEADER 15#ifndef platform_SHA_CTX 16/* 17 * platform's underlying implementation of SHA-1; could be OpenSSL, 18 * blk_SHA, Apple CommonCrypto, etc... Note that including 19 * SHA1_HEADER may have already defined platform_SHA_CTX for our 20 * own implementations like block-sha1 and ppc-sha1, so we list 21 * the default for OpenSSL compatible SHA-1 implementations here. 22 */ 23#define platform_SHA_CTX SHA_CTX 24#define platform_SHA1_Init SHA1_Init 25#define platform_SHA1_Update SHA1_Update 26#define platform_SHA1_Final SHA1_Final 27#endif 28 29#define git_SHA_CTX platform_SHA_CTX 30#define git_SHA1_Init platform_SHA1_Init 31#define git_SHA1_Update platform_SHA1_Update 32#define git_SHA1_Final platform_SHA1_Final 33 34#ifdef SHA1_MAX_BLOCK_SIZE 35#include"compat/sha1-chunked.h" 36#undef git_SHA1_Update 37#define git_SHA1_Update git_SHA1_Update_Chunked 38#endif 39 40#include <zlib.h> 41typedefstruct git_zstream { 42 z_stream z; 43unsigned long avail_in; 44unsigned long avail_out; 45unsigned long total_in; 46unsigned long total_out; 47unsigned char*next_in; 48unsigned char*next_out; 49} git_zstream; 50 51voidgit_inflate_init(git_zstream *); 52voidgit_inflate_init_gzip_only(git_zstream *); 53voidgit_inflate_end(git_zstream *); 54intgit_inflate(git_zstream *,int flush); 55 56voidgit_deflate_init(git_zstream *,int level); 57voidgit_deflate_init_gzip(git_zstream *,int level); 58voidgit_deflate_init_raw(git_zstream *,int level); 59voidgit_deflate_end(git_zstream *); 60intgit_deflate_abort(git_zstream *); 61intgit_deflate_end_gently(git_zstream *); 62intgit_deflate(git_zstream *,int flush); 63unsigned longgit_deflate_bound(git_zstream *,unsigned long); 64 65/* The length in bytes and in hex digits of an object name (SHA-1 value). */ 66#define GIT_SHA1_RAWSZ 20 67#define GIT_SHA1_HEXSZ (2 * GIT_SHA1_RAWSZ) 68 69struct object_id { 70unsigned char hash[GIT_SHA1_RAWSZ]; 71}; 72 73#if defined(DT_UNKNOWN) && !defined(NO_D_TYPE_IN_DIRENT) 74#define DTYPE(de) ((de)->d_type) 75#else 76#undef DT_UNKNOWN 77#undef DT_DIR 78#undef DT_REG 79#undef DT_LNK 80#define DT_UNKNOWN 0 81#define DT_DIR 1 82#define DT_REG 2 83#define DT_LNK 3 84#define DTYPE(de) DT_UNKNOWN 85#endif 86 87/* unknown mode (impossible combination S_IFIFO|S_IFCHR) */ 88#define S_IFINVALID 0030000 89 90/* 91 * A "directory link" is a link to another git directory. 92 * 93 * The value 0160000 is not normally a valid mode, and 94 * also just happens to be S_IFDIR + S_IFLNK 95 */ 96#define S_IFGITLINK 0160000 97#define S_ISGITLINK(m) (((m) & S_IFMT) == S_IFGITLINK) 98 99/* 100 * Some mode bits are also used internally for computations. 101 * 102 * They *must* not overlap with any valid modes, and they *must* not be emitted 103 * to outside world - i.e. appear on disk or network. In other words, it's just 104 * temporary fields, which we internally use, but they have to stay in-house. 105 * 106 * ( such approach is valid, as standard S_IF* fits into 16 bits, and in Git 107 * codebase mode is `unsigned int` which is assumed to be at least 32 bits ) 108 */ 109 110/* used internally in tree-diff */ 111#define S_DIFFTREE_IFXMIN_NEQ 0x80000000 112 113 114/* 115 * Intensive research over the course of many years has shown that 116 * port 9418 is totally unused by anything else. Or 117 * 118 * Your search - "port 9418" - did not match any documents. 119 * 120 * as www.google.com puts it. 121 * 122 * This port has been properly assigned for git use by IANA: 123 * git (Assigned-9418) [I06-050728-0001]. 124 * 125 * git 9418/tcp git pack transfer service 126 * git 9418/udp git pack transfer service 127 * 128 * with Linus Torvalds <torvalds@osdl.org> as the point of 129 * contact. September 2005. 130 * 131 * See http://www.iana.org/assignments/port-numbers 132 */ 133#define DEFAULT_GIT_PORT 9418 134 135/* 136 * Basic data structures for the directory cache 137 */ 138 139#define CACHE_SIGNATURE 0x44495243/* "DIRC" */ 140struct cache_header { 141uint32_t hdr_signature; 142uint32_t hdr_version; 143uint32_t hdr_entries; 144}; 145 146#define INDEX_FORMAT_LB 2 147#define INDEX_FORMAT_UB 4 148 149/* 150 * The "cache_time" is just the low 32 bits of the 151 * time. It doesn't matter if it overflows - we only 152 * check it for equality in the 32 bits we save. 153 */ 154struct cache_time { 155uint32_t sec; 156uint32_t nsec; 157}; 158 159struct stat_data { 160struct cache_time sd_ctime; 161struct cache_time sd_mtime; 162unsigned int sd_dev; 163unsigned int sd_ino; 164unsigned int sd_uid; 165unsigned int sd_gid; 166unsigned int sd_size; 167}; 168 169struct cache_entry { 170struct hashmap_entry ent; 171struct stat_data ce_stat_data; 172unsigned int ce_mode; 173unsigned int ce_flags; 174unsigned int ce_namelen; 175unsigned int index;/* for link extension */ 176unsigned char sha1[20]; 177char name[FLEX_ARRAY];/* more */ 178}; 179 180#define CE_STAGEMASK (0x3000) 181#define CE_EXTENDED (0x4000) 182#define CE_VALID (0x8000) 183#define CE_STAGESHIFT 12 184 185/* 186 * Range 0xFFFF0FFF in ce_flags is divided into 187 * two parts: in-memory flags and on-disk ones. 188 * Flags in CE_EXTENDED_FLAGS will get saved on-disk 189 * if you want to save a new flag, add it in 190 * CE_EXTENDED_FLAGS 191 * 192 * In-memory only flags 193 */ 194#define CE_UPDATE (1 << 16) 195#define CE_REMOVE (1 << 17) 196#define CE_UPTODATE (1 << 18) 197#define CE_ADDED (1 << 19) 198 199#define CE_HASHED (1 << 20) 200#define CE_WT_REMOVE (1 << 22)/* remove in work directory */ 201#define CE_CONFLICTED (1 << 23) 202 203#define CE_UNPACKED (1 << 24) 204#define CE_NEW_SKIP_WORKTREE (1 << 25) 205 206/* used to temporarily mark paths matched by pathspecs */ 207#define CE_MATCHED (1 << 26) 208 209#define CE_UPDATE_IN_BASE (1 << 27) 210#define CE_STRIP_NAME (1 << 28) 211 212/* 213 * Extended on-disk flags 214 */ 215#define CE_INTENT_TO_ADD (1 << 29) 216#define CE_SKIP_WORKTREE (1 << 30) 217/* CE_EXTENDED2 is for future extension */ 218#define CE_EXTENDED2 (1U << 31) 219 220#define CE_EXTENDED_FLAGS (CE_INTENT_TO_ADD | CE_SKIP_WORKTREE) 221 222/* 223 * Safeguard to avoid saving wrong flags: 224 * - CE_EXTENDED2 won't get saved until its semantic is known 225 * - Bits in 0x0000FFFF have been saved in ce_flags already 226 * - Bits in 0x003F0000 are currently in-memory flags 227 */ 228#if CE_EXTENDED_FLAGS & 0x803FFFFF 229#error"CE_EXTENDED_FLAGS out of range" 230#endif 231 232/* Forward structure decls */ 233struct pathspec; 234struct child_process; 235 236/* 237 * Copy the sha1 and stat state of a cache entry from one to 238 * another. But we never change the name, or the hash state! 239 */ 240staticinlinevoidcopy_cache_entry(struct cache_entry *dst, 241const struct cache_entry *src) 242{ 243unsigned int state = dst->ce_flags & CE_HASHED; 244 245/* Don't copy hash chain and name */ 246memcpy(&dst->ce_stat_data, &src->ce_stat_data, 247offsetof(struct cache_entry, name) - 248offsetof(struct cache_entry, ce_stat_data)); 249 250/* Restore the hash state */ 251 dst->ce_flags = (dst->ce_flags & ~CE_HASHED) | state; 252} 253 254staticinlineunsignedcreate_ce_flags(unsigned stage) 255{ 256return(stage << CE_STAGESHIFT); 257} 258 259#define ce_namelen(ce) ((ce)->ce_namelen) 260#define ce_size(ce) cache_entry_size(ce_namelen(ce)) 261#define ce_stage(ce) ((CE_STAGEMASK & (ce)->ce_flags) >> CE_STAGESHIFT) 262#define ce_uptodate(ce) ((ce)->ce_flags & CE_UPTODATE) 263#define ce_skip_worktree(ce) ((ce)->ce_flags & CE_SKIP_WORKTREE) 264#define ce_mark_uptodate(ce) ((ce)->ce_flags |= CE_UPTODATE) 265#define ce_intent_to_add(ce) ((ce)->ce_flags & CE_INTENT_TO_ADD) 266 267#define ce_permissions(mode) (((mode) & 0100) ? 0755 : 0644) 268staticinlineunsigned intcreate_ce_mode(unsigned int mode) 269{ 270if(S_ISLNK(mode)) 271return S_IFLNK; 272if(S_ISDIR(mode) ||S_ISGITLINK(mode)) 273return S_IFGITLINK; 274return S_IFREG |ce_permissions(mode); 275} 276staticinlineunsigned intce_mode_from_stat(const struct cache_entry *ce, 277unsigned int mode) 278{ 279externint trust_executable_bit, has_symlinks; 280if(!has_symlinks &&S_ISREG(mode) && 281 ce &&S_ISLNK(ce->ce_mode)) 282return ce->ce_mode; 283if(!trust_executable_bit &&S_ISREG(mode)) { 284if(ce &&S_ISREG(ce->ce_mode)) 285return ce->ce_mode; 286returncreate_ce_mode(0666); 287} 288returncreate_ce_mode(mode); 289} 290staticinlineintce_to_dtype(const struct cache_entry *ce) 291{ 292unsigned ce_mode =ntohl(ce->ce_mode); 293if(S_ISREG(ce_mode)) 294return DT_REG; 295else if(S_ISDIR(ce_mode) ||S_ISGITLINK(ce_mode)) 296return DT_DIR; 297else if(S_ISLNK(ce_mode)) 298return DT_LNK; 299else 300return DT_UNKNOWN; 301} 302staticinlineunsigned intcanon_mode(unsigned int mode) 303{ 304if(S_ISREG(mode)) 305return S_IFREG |ce_permissions(mode); 306if(S_ISLNK(mode)) 307return S_IFLNK; 308if(S_ISDIR(mode)) 309return S_IFDIR; 310return S_IFGITLINK; 311} 312 313#define cache_entry_size(len) (offsetof(struct cache_entry,name) + (len) + 1) 314 315#define SOMETHING_CHANGED (1 << 0)/* unclassified changes go here */ 316#define CE_ENTRY_CHANGED (1 << 1) 317#define CE_ENTRY_REMOVED (1 << 2) 318#define CE_ENTRY_ADDED (1 << 3) 319#define RESOLVE_UNDO_CHANGED (1 << 4) 320#define CACHE_TREE_CHANGED (1 << 5) 321#define SPLIT_INDEX_ORDERED (1 << 6) 322#define UNTRACKED_CHANGED (1 << 7) 323 324struct split_index; 325struct untracked_cache; 326 327struct index_state { 328struct cache_entry **cache; 329unsigned int version; 330unsigned int cache_nr, cache_alloc, cache_changed; 331struct string_list *resolve_undo; 332struct cache_tree *cache_tree; 333struct split_index *split_index; 334struct cache_time timestamp; 335unsigned name_hash_initialized :1, 336 initialized :1; 337struct hashmap name_hash; 338struct hashmap dir_hash; 339unsigned char sha1[20]; 340struct untracked_cache *untracked; 341}; 342 343externstruct index_state the_index; 344 345/* Name hashing */ 346externvoidadd_name_hash(struct index_state *istate,struct cache_entry *ce); 347externvoidremove_name_hash(struct index_state *istate,struct cache_entry *ce); 348externvoidfree_name_hash(struct index_state *istate); 349 350 351#ifndef NO_THE_INDEX_COMPATIBILITY_MACROS 352#define active_cache (the_index.cache) 353#define active_nr (the_index.cache_nr) 354#define active_alloc (the_index.cache_alloc) 355#define active_cache_changed (the_index.cache_changed) 356#define active_cache_tree (the_index.cache_tree) 357 358#define read_cache() read_index(&the_index) 359#define read_cache_from(path) read_index_from(&the_index, (path)) 360#define read_cache_preload(pathspec) read_index_preload(&the_index, (pathspec)) 361#define is_cache_unborn() is_index_unborn(&the_index) 362#define read_cache_unmerged() read_index_unmerged(&the_index) 363#define discard_cache() discard_index(&the_index) 364#define unmerged_cache() unmerged_index(&the_index) 365#define cache_name_pos(name, namelen) index_name_pos(&the_index,(name),(namelen)) 366#define add_cache_entry(ce, option) add_index_entry(&the_index, (ce), (option)) 367#define rename_cache_entry_at(pos, new_name) rename_index_entry_at(&the_index, (pos), (new_name)) 368#define remove_cache_entry_at(pos) remove_index_entry_at(&the_index, (pos)) 369#define remove_file_from_cache(path) remove_file_from_index(&the_index, (path)) 370#define add_to_cache(path, st, flags) add_to_index(&the_index, (path), (st), (flags)) 371#define add_file_to_cache(path, flags) add_file_to_index(&the_index, (path), (flags)) 372#define refresh_cache(flags) refresh_index(&the_index, (flags), NULL, NULL, NULL) 373#define ce_match_stat(ce, st, options) ie_match_stat(&the_index, (ce), (st), (options)) 374#define ce_modified(ce, st, options) ie_modified(&the_index, (ce), (st), (options)) 375#define cache_dir_exists(name, namelen) index_dir_exists(&the_index, (name), (namelen)) 376#define cache_file_exists(name, namelen, igncase) index_file_exists(&the_index, (name), (namelen), (igncase)) 377#define cache_name_is_other(name, namelen) index_name_is_other(&the_index, (name), (namelen)) 378#define resolve_undo_clear() resolve_undo_clear_index(&the_index) 379#define unmerge_cache_entry_at(at) unmerge_index_entry_at(&the_index, at) 380#define unmerge_cache(pathspec) unmerge_index(&the_index, pathspec) 381#define read_blob_data_from_cache(path, sz) read_blob_data_from_index(&the_index, (path), (sz)) 382#endif 383 384enum object_type { 385 OBJ_BAD = -1, 386 OBJ_NONE =0, 387 OBJ_COMMIT =1, 388 OBJ_TREE =2, 389 OBJ_BLOB =3, 390 OBJ_TAG =4, 391/* 5 for future expansion */ 392 OBJ_OFS_DELTA =6, 393 OBJ_REF_DELTA =7, 394 OBJ_ANY, 395 OBJ_MAX 396}; 397 398staticinlineenum object_type object_type(unsigned int mode) 399{ 400returnS_ISDIR(mode) ? OBJ_TREE : 401S_ISGITLINK(mode) ? OBJ_COMMIT : 402 OBJ_BLOB; 403} 404 405/* Double-check local_repo_env below if you add to this list. */ 406#define GIT_DIR_ENVIRONMENT"GIT_DIR" 407#define GIT_COMMON_DIR_ENVIRONMENT"GIT_COMMON_DIR" 408#define GIT_NAMESPACE_ENVIRONMENT"GIT_NAMESPACE" 409#define GIT_WORK_TREE_ENVIRONMENT"GIT_WORK_TREE" 410#define GIT_PREFIX_ENVIRONMENT"GIT_PREFIX" 411#define DEFAULT_GIT_DIR_ENVIRONMENT".git" 412#define DB_ENVIRONMENT"GIT_OBJECT_DIRECTORY" 413#define INDEX_ENVIRONMENT"GIT_INDEX_FILE" 414#define GRAFT_ENVIRONMENT"GIT_GRAFT_FILE" 415#define GIT_SHALLOW_FILE_ENVIRONMENT"GIT_SHALLOW_FILE" 416#define TEMPLATE_DIR_ENVIRONMENT"GIT_TEMPLATE_DIR" 417#define CONFIG_ENVIRONMENT"GIT_CONFIG" 418#define CONFIG_DATA_ENVIRONMENT"GIT_CONFIG_PARAMETERS" 419#define EXEC_PATH_ENVIRONMENT"GIT_EXEC_PATH" 420#define CEILING_DIRECTORIES_ENVIRONMENT"GIT_CEILING_DIRECTORIES" 421#define NO_REPLACE_OBJECTS_ENVIRONMENT"GIT_NO_REPLACE_OBJECTS" 422#define GIT_REPLACE_REF_BASE_ENVIRONMENT"GIT_REPLACE_REF_BASE" 423#define GITATTRIBUTES_FILE".gitattributes" 424#define INFOATTRIBUTES_FILE"info/attributes" 425#define ATTRIBUTE_MACRO_PREFIX"[attr]" 426#define GIT_NOTES_REF_ENVIRONMENT"GIT_NOTES_REF" 427#define GIT_NOTES_DEFAULT_REF"refs/notes/commits" 428#define GIT_NOTES_DISPLAY_REF_ENVIRONMENT"GIT_NOTES_DISPLAY_REF" 429#define GIT_NOTES_REWRITE_REF_ENVIRONMENT"GIT_NOTES_REWRITE_REF" 430#define GIT_NOTES_REWRITE_MODE_ENVIRONMENT"GIT_NOTES_REWRITE_MODE" 431#define GIT_LITERAL_PATHSPECS_ENVIRONMENT"GIT_LITERAL_PATHSPECS" 432#define GIT_GLOB_PATHSPECS_ENVIRONMENT"GIT_GLOB_PATHSPECS" 433#define GIT_NOGLOB_PATHSPECS_ENVIRONMENT"GIT_NOGLOB_PATHSPECS" 434#define GIT_ICASE_PATHSPECS_ENVIRONMENT"GIT_ICASE_PATHSPECS" 435 436/* 437 * This environment variable is expected to contain a boolean indicating 438 * whether we should or should not treat: 439 * 440 * GIT_DIR=foo.git git ... 441 * 442 * as if GIT_WORK_TREE=. was given. It's not expected that users will make use 443 * of this, but we use it internally to communicate to sub-processes that we 444 * are in a bare repo. If not set, defaults to true. 445 */ 446#define GIT_IMPLICIT_WORK_TREE_ENVIRONMENT"GIT_IMPLICIT_WORK_TREE" 447 448/* 449 * Repository-local GIT_* environment variables; these will be cleared 450 * when git spawns a sub-process that runs inside another repository. 451 * The array is NULL-terminated, which makes it easy to pass in the "env" 452 * parameter of a run-command invocation, or to do a simple walk. 453 */ 454externconst char*const local_repo_env[]; 455 456externint is_bare_repository_cfg; 457externintis_bare_repository(void); 458externintis_inside_git_dir(void); 459externchar*git_work_tree_cfg; 460externintis_inside_work_tree(void); 461externconst char*get_git_dir(void); 462externconst char*get_git_common_dir(void); 463externchar*get_object_directory(void); 464externchar*get_index_file(void); 465externchar*get_graft_file(void); 466externintset_git_dir(const char*path); 467externintget_common_dir_noenv(struct strbuf *sb,const char*gitdir); 468externintget_common_dir(struct strbuf *sb,const char*gitdir); 469externconst char*get_git_namespace(void); 470externconst char*strip_namespace(const char*namespaced_ref); 471externconst char*get_git_work_tree(void); 472 473/* 474 * Return true if the given path is a git directory; note that this _just_ 475 * looks at the directory itself. If you want to know whether "foo/.git" 476 * is a repository, you must feed that path, not just "foo". 477 */ 478externintis_git_directory(const char*path); 479 480/* 481 * Return 1 if the given path is the root of a git repository or 482 * submodule, else 0. Will not return 1 for bare repositories with the 483 * exception of creating a bare repository in "foo/.git" and calling 484 * is_git_repository("foo"). 485 * 486 * If we run into read errors, we err on the side of saying "yes, it is", 487 * as we usually consider sub-repos precious, and would prefer to err on the 488 * side of not disrupting or deleting them. 489 */ 490externintis_nonbare_repository_dir(struct strbuf *path); 491 492#define READ_GITFILE_ERR_STAT_FAILED 1 493#define READ_GITFILE_ERR_NOT_A_FILE 2 494#define READ_GITFILE_ERR_OPEN_FAILED 3 495#define READ_GITFILE_ERR_READ_FAILED 4 496#define READ_GITFILE_ERR_INVALID_FORMAT 5 497#define READ_GITFILE_ERR_NO_PATH 6 498#define READ_GITFILE_ERR_NOT_A_REPO 7 499#define READ_GITFILE_ERR_TOO_LARGE 8 500externconst char*read_gitfile_gently(const char*path,int*return_error_code); 501#define read_gitfile(path) read_gitfile_gently((path), NULL) 502externconst char*resolve_gitdir(const char*suspect); 503externvoidset_git_work_tree(const char*tree); 504 505#define ALTERNATE_DB_ENVIRONMENT"GIT_ALTERNATE_OBJECT_DIRECTORIES" 506 507externconst char**get_pathspec(const char*prefix,const char**pathspec); 508externvoidsetup_work_tree(void); 509externconst char*setup_git_directory_gently(int*); 510externconst char*setup_git_directory(void); 511externchar*prefix_path(const char*prefix,int len,const char*path); 512externchar*prefix_path_gently(const char*prefix,int len,int*remaining,const char*path); 513externconst char*prefix_filename(const char*prefix,int len,const char*path); 514externintcheck_filename(const char*prefix,const char*name); 515externvoidverify_filename(const char*prefix, 516const char*name, 517int diagnose_misspelt_rev); 518externvoidverify_non_filename(const char*prefix,const char*name); 519externintpath_inside_repo(const char*prefix,const char*path); 520 521#define INIT_DB_QUIET 0x0001 522 523externintset_git_dir_init(const char*git_dir,const char*real_git_dir,int); 524externintinit_db(const char*template_dir,unsigned int flags); 525 526externvoidsanitize_stdfds(void); 527externintdaemonize(void); 528 529#define alloc_nr(x) (((x)+16)*3/2) 530 531/* 532 * Realloc the buffer pointed at by variable 'x' so that it can hold 533 * at least 'nr' entries; the number of entries currently allocated 534 * is 'alloc', using the standard growing factor alloc_nr() macro. 535 * 536 * DO NOT USE any expression with side-effect for 'x', 'nr', or 'alloc'. 537 */ 538#define ALLOC_GROW(x, nr, alloc) \ 539 do { \ 540 if ((nr) > alloc) { \ 541 if (alloc_nr(alloc) < (nr)) \ 542 alloc = (nr); \ 543 else \ 544 alloc = alloc_nr(alloc); \ 545 REALLOC_ARRAY(x, alloc); \ 546 } \ 547 } while (0) 548 549/* Initialize and use the cache information */ 550struct lock_file; 551externintread_index(struct index_state *); 552externintread_index_preload(struct index_state *,const struct pathspec *pathspec); 553externintdo_read_index(struct index_state *istate,const char*path, 554int must_exist);/* for testting only! */ 555externintread_index_from(struct index_state *,const char*path); 556externintis_index_unborn(struct index_state *); 557externintread_index_unmerged(struct index_state *); 558#define COMMIT_LOCK (1 << 0) 559#define CLOSE_LOCK (1 << 1) 560externintwrite_locked_index(struct index_state *,struct lock_file *lock,unsigned flags); 561externintdiscard_index(struct index_state *); 562externintunmerged_index(const struct index_state *); 563externintverify_path(const char*path); 564externintindex_dir_exists(struct index_state *istate,const char*name,int namelen); 565externvoidadjust_dirname_case(struct index_state *istate,char*name); 566externstruct cache_entry *index_file_exists(struct index_state *istate,const char*name,int namelen,int igncase); 567externintindex_name_pos(const struct index_state *,const char*name,int namelen); 568#define ADD_CACHE_OK_TO_ADD 1/* Ok to add */ 569#define ADD_CACHE_OK_TO_REPLACE 2/* Ok to replace file/directory */ 570#define ADD_CACHE_SKIP_DFCHECK 4/* Ok to skip DF conflict checks */ 571#define ADD_CACHE_JUST_APPEND 8/* Append only; tree.c::read_tree() */ 572#define ADD_CACHE_NEW_ONLY 16/* Do not replace existing ones */ 573#define ADD_CACHE_KEEP_CACHE_TREE 32/* Do not invalidate cache-tree */ 574externintadd_index_entry(struct index_state *,struct cache_entry *ce,int option); 575externvoidrename_index_entry_at(struct index_state *,int pos,const char*new_name); 576externintremove_index_entry_at(struct index_state *,int pos); 577externvoidremove_marked_cache_entries(struct index_state *istate); 578externintremove_file_from_index(struct index_state *,const char*path); 579#define ADD_CACHE_VERBOSE 1 580#define ADD_CACHE_PRETEND 2 581#define ADD_CACHE_IGNORE_ERRORS 4 582#define ADD_CACHE_IGNORE_REMOVAL 8 583#define ADD_CACHE_INTENT 16 584externintadd_to_index(struct index_state *,const char*path,struct stat *,int flags); 585externintadd_file_to_index(struct index_state *,const char*path,int flags); 586externstruct cache_entry *make_cache_entry(unsigned int mode,const unsigned char*sha1,const char*path,int stage,unsigned int refresh_options); 587externintce_same_name(const struct cache_entry *a,const struct cache_entry *b); 588externvoidset_object_name_for_intent_to_add_entry(struct cache_entry *ce); 589externintindex_name_is_other(const struct index_state *,const char*,int); 590externvoid*read_blob_data_from_index(struct index_state *,const char*,unsigned long*); 591 592/* do stat comparison even if CE_VALID is true */ 593#define CE_MATCH_IGNORE_VALID 01 594/* do not check the contents but report dirty on racily-clean entries */ 595#define CE_MATCH_RACY_IS_DIRTY 02 596/* do stat comparison even if CE_SKIP_WORKTREE is true */ 597#define CE_MATCH_IGNORE_SKIP_WORKTREE 04 598/* ignore non-existent files during stat update */ 599#define CE_MATCH_IGNORE_MISSING 0x08 600/* enable stat refresh */ 601#define CE_MATCH_REFRESH 0x10 602externintie_match_stat(const struct index_state *,const struct cache_entry *,struct stat *,unsigned int); 603externintie_modified(const struct index_state *,const struct cache_entry *,struct stat *,unsigned int); 604 605#define HASH_WRITE_OBJECT 1 606#define HASH_FORMAT_CHECK 2 607externintindex_fd(unsigned char*sha1,int fd,struct stat *st,enum object_type type,const char*path,unsigned flags); 608externintindex_path(unsigned char*sha1,const char*path,struct stat *st,unsigned flags); 609 610/* 611 * Record to sd the data from st that we use to check whether a file 612 * might have changed. 613 */ 614externvoidfill_stat_data(struct stat_data *sd,struct stat *st); 615 616/* 617 * Return 0 if st is consistent with a file not having been changed 618 * since sd was filled. If there are differences, return a 619 * combination of MTIME_CHANGED, CTIME_CHANGED, OWNER_CHANGED, 620 * INODE_CHANGED, and DATA_CHANGED. 621 */ 622externintmatch_stat_data(const struct stat_data *sd,struct stat *st); 623externintmatch_stat_data_racy(const struct index_state *istate, 624const struct stat_data *sd,struct stat *st); 625 626externvoidfill_stat_cache_info(struct cache_entry *ce,struct stat *st); 627 628#define REFRESH_REALLY 0x0001/* ignore_valid */ 629#define REFRESH_UNMERGED 0x0002/* allow unmerged */ 630#define REFRESH_QUIET 0x0004/* be quiet about it */ 631#define REFRESH_IGNORE_MISSING 0x0008/* ignore non-existent */ 632#define REFRESH_IGNORE_SUBMODULES 0x0010/* ignore submodules */ 633#define REFRESH_IN_PORCELAIN 0x0020/* user friendly output, not "needs update" */ 634externintrefresh_index(struct index_state *,unsigned int flags,const struct pathspec *pathspec,char*seen,const char*header_msg); 635 636externvoidupdate_index_if_able(struct index_state *,struct lock_file *); 637 638externinthold_locked_index(struct lock_file *,int); 639externvoidset_alternate_index_output(const char*); 640 641/* Environment bits from configuration mechanism */ 642externint trust_executable_bit; 643externint trust_ctime; 644externint check_stat; 645externint quote_path_fully; 646externint has_symlinks; 647externint minimum_abbrev, default_abbrev; 648externint ignore_case; 649externint assume_unchanged; 650externint prefer_symlink_refs; 651externint log_all_ref_updates; 652externint warn_ambiguous_refs; 653externint warn_on_object_refname_ambiguity; 654externint shared_repository; 655externconst char*apply_default_whitespace; 656externconst char*apply_default_ignorewhitespace; 657externconst char*git_attributes_file; 658externint zlib_compression_level; 659externint core_compression_level; 660externint core_compression_seen; 661externsize_t packed_git_window_size; 662externsize_t packed_git_limit; 663externsize_t delta_base_cache_limit; 664externunsigned long big_file_threshold; 665externunsigned long pack_size_limit_cfg; 666 667/* 668 * Do replace refs need to be checked this run? This variable is 669 * initialized to true unless --no-replace-object is used or 670 * $GIT_NO_REPLACE_OBJECTS is set, but is set to false by some 671 * commands that do not want replace references to be active. As an 672 * optimization it is also set to false if replace references have 673 * been sought but there were none. 674 */ 675externint check_replace_refs; 676externchar*git_replace_ref_base; 677 678externint fsync_object_files; 679externint core_preload_index; 680externint core_apply_sparse_checkout; 681externint precomposed_unicode; 682externint protect_hfs; 683externint protect_ntfs; 684externint git_db_env, git_index_env, git_graft_env, git_common_dir_env; 685 686/* 687 * Include broken refs in all ref iterations, which will 688 * generally choke dangerous operations rather than letting 689 * them silently proceed without taking the broken ref into 690 * account. 691 */ 692externint ref_paranoia; 693 694/* 695 * The character that begins a commented line in user-editable file 696 * that is subject to stripspace. 697 */ 698externchar comment_line_char; 699externint auto_comment_line_char; 700 701enum branch_track { 702 BRANCH_TRACK_UNSPECIFIED = -1, 703 BRANCH_TRACK_NEVER =0, 704 BRANCH_TRACK_REMOTE, 705 BRANCH_TRACK_ALWAYS, 706 BRANCH_TRACK_EXPLICIT, 707 BRANCH_TRACK_OVERRIDE 708}; 709 710enum rebase_setup_type { 711 AUTOREBASE_NEVER =0, 712 AUTOREBASE_LOCAL, 713 AUTOREBASE_REMOTE, 714 AUTOREBASE_ALWAYS 715}; 716 717enum push_default_type { 718 PUSH_DEFAULT_NOTHING =0, 719 PUSH_DEFAULT_MATCHING, 720 PUSH_DEFAULT_SIMPLE, 721 PUSH_DEFAULT_UPSTREAM, 722 PUSH_DEFAULT_CURRENT, 723 PUSH_DEFAULT_UNSPECIFIED 724}; 725 726externenum branch_track git_branch_track; 727externenum rebase_setup_type autorebase; 728externenum push_default_type push_default; 729 730enum object_creation_mode { 731 OBJECT_CREATION_USES_HARDLINKS =0, 732 OBJECT_CREATION_USES_RENAMES =1 733}; 734 735externenum object_creation_mode object_creation_mode; 736 737externchar*notes_ref_name; 738 739externint grafts_replace_parents; 740 741/* 742 * GIT_REPO_VERSION is the version we write by default. The 743 * _READ variant is the highest number we know how to 744 * handle. 745 */ 746#define GIT_REPO_VERSION 0 747#define GIT_REPO_VERSION_READ 1 748externint repository_format_version; 749externint repository_format_precious_objects; 750externintcheck_repository_format(void); 751 752#define MTIME_CHANGED 0x0001 753#define CTIME_CHANGED 0x0002 754#define OWNER_CHANGED 0x0004 755#define MODE_CHANGED 0x0008 756#define INODE_CHANGED 0x0010 757#define DATA_CHANGED 0x0020 758#define TYPE_CHANGED 0x0040 759 760/* 761 * Return a statically allocated filename, either generically (mkpath), in 762 * the repository directory (git_path), or in a submodule's repository 763 * directory (git_path_submodule). In all cases, note that the result 764 * may be overwritten by another call to _any_ of the functions. Consider 765 * using the safer "dup" or "strbuf" formats below (in some cases, the 766 * unsafe versions have already been removed). 767 */ 768externconst char*mkpath(const char*fmt, ...)__attribute__((format(printf,1,2))); 769externconst char*git_path(const char*fmt, ...)__attribute__((format(printf,1,2))); 770 771externchar*mksnpath(char*buf,size_t n,const char*fmt, ...) 772__attribute__((format(printf,3,4))); 773externvoidstrbuf_git_path(struct strbuf *sb,const char*fmt, ...) 774__attribute__((format(printf,2,3))); 775externchar*git_path_buf(struct strbuf *buf,const char*fmt, ...) 776__attribute__((format(printf,2,3))); 777externvoidstrbuf_git_path_submodule(struct strbuf *sb,const char*path, 778const char*fmt, ...) 779__attribute__((format(printf,3,4))); 780externchar*git_pathdup(const char*fmt, ...) 781__attribute__((format(printf,1,2))); 782externchar*mkpathdup(const char*fmt, ...) 783__attribute__((format(printf,1,2))); 784externchar*git_pathdup_submodule(const char*path,const char*fmt, ...) 785__attribute__((format(printf,2,3))); 786 787externvoidreport_linked_checkout_garbage(void); 788 789/* 790 * You can define a static memoized git path like: 791 * 792 * static GIT_PATH_FUNC(git_path_foo, "FOO"); 793 * 794 * or use one of the global ones below. 795 */ 796#define GIT_PATH_FUNC(func, filename) \ 797 const char *func(void) \ 798 { \ 799 static char *ret; \ 800 if (!ret) \ 801 ret = git_pathdup(filename); \ 802 return ret; \ 803 } 804 805const char*git_path_cherry_pick_head(void); 806const char*git_path_revert_head(void); 807const char*git_path_squash_msg(void); 808const char*git_path_merge_msg(void); 809const char*git_path_merge_rr(void); 810const char*git_path_merge_mode(void); 811const char*git_path_merge_head(void); 812const char*git_path_fetch_head(void); 813const char*git_path_shallow(void); 814 815/* 816 * Return the name of the file in the local object database that would 817 * be used to store a loose object with the specified sha1. The 818 * return value is a pointer to a statically allocated buffer that is 819 * overwritten each time the function is called. 820 */ 821externconst char*sha1_file_name(const unsigned char*sha1); 822 823/* 824 * Return the name of the (local) packfile with the specified sha1 in 825 * its name. The return value is a pointer to memory that is 826 * overwritten each time this function is called. 827 */ 828externchar*sha1_pack_name(const unsigned char*sha1); 829 830/* 831 * Return the name of the (local) pack index file with the specified 832 * sha1 in its name. The return value is a pointer to memory that is 833 * overwritten each time this function is called. 834 */ 835externchar*sha1_pack_index_name(const unsigned char*sha1); 836 837/* 838 * Return an abbreviated sha1 unique within this repository's object database. 839 * The result will be at least `len` characters long, and will be NUL 840 * terminated. 841 * 842 * The non-`_r` version returns a static buffer which will be overwritten by 843 * subsequent calls. 844 * 845 * The `_r` variant writes to a buffer supplied by the caller, which must be at 846 * least `GIT_SHA1_HEXSZ + 1` bytes. The return value is the number of bytes 847 * written (excluding the NUL terminator). 848 * 849 * Note that while this version avoids the static buffer, it is not fully 850 * reentrant, as it calls into other non-reentrant git code. 851 */ 852externconst char*find_unique_abbrev(const unsigned char*sha1,int len); 853externintfind_unique_abbrev_r(char*hex,const unsigned char*sha1,int len); 854 855externconst unsigned char null_sha1[GIT_SHA1_RAWSZ]; 856externconst struct object_id null_oid; 857 858staticinlineinthashcmp(const unsigned char*sha1,const unsigned char*sha2) 859{ 860int i; 861 862for(i =0; i < GIT_SHA1_RAWSZ; i++, sha1++, sha2++) { 863if(*sha1 != *sha2) 864return*sha1 - *sha2; 865} 866 867return0; 868} 869 870staticinlineintoidcmp(const struct object_id *oid1,const struct object_id *oid2) 871{ 872returnhashcmp(oid1->hash, oid2->hash); 873} 874 875staticinlineintis_null_sha1(const unsigned char*sha1) 876{ 877return!hashcmp(sha1, null_sha1); 878} 879 880staticinlineintis_null_oid(const struct object_id *oid) 881{ 882return!hashcmp(oid->hash, null_sha1); 883} 884 885staticinlinevoidhashcpy(unsigned char*sha_dst,const unsigned char*sha_src) 886{ 887memcpy(sha_dst, sha_src, GIT_SHA1_RAWSZ); 888} 889 890staticinlinevoidoidcpy(struct object_id *dst,const struct object_id *src) 891{ 892hashcpy(dst->hash, src->hash); 893} 894 895staticinlinevoidhashclr(unsigned char*hash) 896{ 897memset(hash,0, GIT_SHA1_RAWSZ); 898} 899 900staticinlinevoidoidclr(struct object_id *oid) 901{ 902hashclr(oid->hash); 903} 904 905 906#define EMPTY_TREE_SHA1_HEX \ 907"4b825dc642cb6eb9a060e54bf8d69288fbee4904" 908#define EMPTY_TREE_SHA1_BIN_LITERAL \ 909"\x4b\x82\x5d\xc6\x42\xcb\x6e\xb9\xa0\x60" \ 910"\xe5\x4b\xf8\xd6\x92\x88\xfb\xee\x49\x04" 911#define EMPTY_TREE_SHA1_BIN \ 912 ((const unsigned char *) EMPTY_TREE_SHA1_BIN_LITERAL) 913 914#define EMPTY_BLOB_SHA1_HEX \ 915"e69de29bb2d1d6434b8b29ae775ad8c2e48c5391" 916#define EMPTY_BLOB_SHA1_BIN_LITERAL \ 917"\xe6\x9d\xe2\x9b\xb2\xd1\xd6\x43\x4b\x8b" \ 918"\x29\xae\x77\x5a\xd8\xc2\xe4\x8c\x53\x91" 919#define EMPTY_BLOB_SHA1_BIN \ 920 ((const unsigned char *) EMPTY_BLOB_SHA1_BIN_LITERAL) 921 922staticinlineintis_empty_blob_sha1(const unsigned char*sha1) 923{ 924return!hashcmp(sha1, EMPTY_BLOB_SHA1_BIN); 925} 926 927intgit_mkstemp(char*path,size_t n,const char*template); 928 929intgit_mkstemps(char*path,size_t n,const char*template,int suffix_len); 930 931/* set default permissions by passing mode arguments to open(2) */ 932intgit_mkstemps_mode(char*pattern,int suffix_len,int mode); 933intgit_mkstemp_mode(char*pattern,int mode); 934 935/* 936 * NOTE NOTE NOTE!! 937 * 938 * PERM_UMASK, OLD_PERM_GROUP and OLD_PERM_EVERYBODY enumerations must 939 * not be changed. Old repositories have core.sharedrepository written in 940 * numeric format, and therefore these values are preserved for compatibility 941 * reasons. 942 */ 943enum sharedrepo { 944 PERM_UMASK =0, 945 OLD_PERM_GROUP =1, 946 OLD_PERM_EVERYBODY =2, 947 PERM_GROUP =0660, 948 PERM_EVERYBODY =0664 949}; 950intgit_config_perm(const char*var,const char*value); 951intadjust_shared_perm(const char*path); 952 953/* 954 * Create the directory containing the named path, using care to be 955 * somewhat safe against races. Return one of the scld_error values 956 * to indicate success/failure. 957 * 958 * SCLD_VANISHED indicates that one of the ancestor directories of the 959 * path existed at one point during the function call and then 960 * suddenly vanished, probably because another process pruned the 961 * directory while we were working. To be robust against this kind of 962 * race, callers might want to try invoking the function again when it 963 * returns SCLD_VANISHED. 964 */ 965enum scld_error { 966 SCLD_OK =0, 967 SCLD_FAILED = -1, 968 SCLD_PERMS = -2, 969 SCLD_EXISTS = -3, 970 SCLD_VANISHED = -4 971}; 972enum scld_error safe_create_leading_directories(char*path); 973enum scld_error safe_create_leading_directories_const(const char*path); 974 975intmkdir_in_gitdir(const char*path); 976externchar*expand_user_path(const char*path); 977const char*enter_repo(const char*path,int strict); 978staticinlineintis_absolute_path(const char*path) 979{ 980returnis_dir_sep(path[0]) ||has_dos_drive_prefix(path); 981} 982intis_directory(const char*); 983const char*real_path(const char*path); 984const char*real_path_if_valid(const char*path); 985const char*absolute_path(const char*path); 986const char*remove_leading_path(const char*in,const char*prefix); 987const char*relative_path(const char*in,const char*prefix,struct strbuf *sb); 988intnormalize_path_copy_len(char*dst,const char*src,int*prefix_len); 989intnormalize_path_copy(char*dst,const char*src); 990intlongest_ancestor_length(const char*path,struct string_list *prefixes); 991char*strip_path_suffix(const char*path,const char*suffix); 992intdaemon_avoid_alias(const char*path); 993externintis_ntfs_dotgit(const char*name); 994 995/** 996 * Return a newly allocated string with the evaluation of 997 * "$XDG_CONFIG_HOME/git/$filename" if $XDG_CONFIG_HOME is non-empty, otherwise 998 * "$HOME/.config/git/$filename". Return NULL upon error. 999 */1000externchar*xdg_config_home(const char*filename);10011002/* object replacement */1003#define LOOKUP_REPLACE_OBJECT 11004#define LOOKUP_UNKNOWN_OBJECT 21005externvoid*read_sha1_file_extended(const unsigned char*sha1,enum object_type *type,unsigned long*size,unsigned flag);1006staticinlinevoid*read_sha1_file(const unsigned char*sha1,enum object_type *type,unsigned long*size)1007{1008returnread_sha1_file_extended(sha1, type, size, LOOKUP_REPLACE_OBJECT);1009}10101011/*1012 * This internal function is only declared here for the benefit of1013 * lookup_replace_object(). Please do not call it directly.1014 */1015externconst unsigned char*do_lookup_replace_object(const unsigned char*sha1);10161017/*1018 * If object sha1 should be replaced, return the replacement object's1019 * name (replaced recursively, if necessary). The return value is1020 * either sha1 or a pointer to a permanently-allocated value. When1021 * object replacement is suppressed, always return sha1.1022 */1023staticinlineconst unsigned char*lookup_replace_object(const unsigned char*sha1)1024{1025if(!check_replace_refs)1026return sha1;1027returndo_lookup_replace_object(sha1);1028}10291030staticinlineconst unsigned char*lookup_replace_object_extended(const unsigned char*sha1,unsigned flag)1031{1032if(!(flag & LOOKUP_REPLACE_OBJECT))1033return sha1;1034returnlookup_replace_object(sha1);1035}10361037/* Read and unpack a sha1 file into memory, write memory to a sha1 file */1038externintsha1_object_info(const unsigned char*,unsigned long*);1039externinthash_sha1_file(const void*buf,unsigned long len,const char*type,unsigned char*sha1);1040externintwrite_sha1_file(const void*buf,unsigned long len,const char*type,unsigned char*return_sha1);1041externinthash_sha1_file_literally(const void*buf,unsigned long len,const char*type,unsigned char*sha1,unsigned flags);1042externintpretend_sha1_file(void*,unsigned long,enum object_type,unsigned char*);1043externintforce_object_loose(const unsigned char*sha1,time_t mtime);1044externintgit_open_noatime(const char*name);1045externvoid*map_sha1_file(const unsigned char*sha1,unsigned long*size);1046externintunpack_sha1_header(git_zstream *stream,unsigned char*map,unsigned long mapsize,void*buffer,unsigned long bufsiz);1047externintparse_sha1_header(const char*hdr,unsigned long*sizep);10481049/* global flag to enable extra checks when accessing packed objects */1050externint do_check_packed_object_crc;10511052externintcheck_sha1_signature(const unsigned char*sha1,void*buf,unsigned long size,const char*type);10531054externintfinalize_object_file(const char*tmpfile,const char*filename);10551056externinthas_sha1_pack(const unsigned char*sha1);10571058/*1059 * Return true iff we have an object named sha1, whether local or in1060 * an alternate object database, and whether packed or loose. This1061 * function does not respect replace references.1062 *1063 * If the QUICK flag is set, do not re-check the pack directory1064 * when we cannot find the object (this means we may give a false1065 * negative answer if another process is simultaneously repacking).1066 */1067#define HAS_SHA1_QUICK 0x11068externinthas_sha1_file_with_flags(const unsigned char*sha1,int flags);1069staticinlineinthas_sha1_file(const unsigned char*sha1)1070{1071returnhas_sha1_file_with_flags(sha1,0);1072}10731074/* Same as the above, except for struct object_id. */1075externinthas_object_file(const struct object_id *oid);10761077/*1078 * Return true iff an alternate object database has a loose object1079 * with the specified name. This function does not respect replace1080 * references.1081 */1082externinthas_loose_object_nonlocal(const unsigned char*sha1);10831084externinthas_pack_index(const unsigned char*sha1);10851086externvoidassert_sha1_type(const unsigned char*sha1,enum object_type expect);10871088externconst signed char hexval_table[256];1089staticinlineunsigned inthexval(unsigned char c)1090{1091return hexval_table[c];1092}10931094/* Convert to/from hex/sha1 representation */1095#define MINIMUM_ABBREV minimum_abbrev1096#define DEFAULT_ABBREV default_abbrev10971098struct object_context {1099unsigned char tree[20];1100char path[PATH_MAX];1101unsigned mode;1102/*1103 * symlink_path is only used by get_tree_entry_follow_symlinks,1104 * and only for symlinks that point outside the repository.1105 */1106struct strbuf symlink_path;1107};11081109#define GET_SHA1_QUIETLY 011110#define GET_SHA1_COMMIT 021111#define GET_SHA1_COMMITTISH 041112#define GET_SHA1_TREE 0101113#define GET_SHA1_TREEISH 0201114#define GET_SHA1_BLOB 0401115#define GET_SHA1_FOLLOW_SYMLINKS 01001116#define GET_SHA1_ONLY_TO_DIE 0400011171118externintget_sha1(const char*str,unsigned char*sha1);1119externintget_sha1_commit(const char*str,unsigned char*sha1);1120externintget_sha1_committish(const char*str,unsigned char*sha1);1121externintget_sha1_tree(const char*str,unsigned char*sha1);1122externintget_sha1_treeish(const char*str,unsigned char*sha1);1123externintget_sha1_blob(const char*str,unsigned char*sha1);1124externvoidmaybe_die_on_misspelt_object_name(const char*name,const char*prefix);1125externintget_sha1_with_context(const char*str,unsigned flags,unsigned char*sha1,struct object_context *orc);11261127typedefinteach_abbrev_fn(const unsigned char*sha1,void*);1128externintfor_each_abbrev(const char*prefix, each_abbrev_fn,void*);11291130/*1131 * Try to read a SHA1 in hexadecimal format from the 40 characters1132 * starting at hex. Write the 20-byte result to sha1 in binary form.1133 * Return 0 on success. Reading stops if a NUL is encountered in the1134 * input, so it is safe to pass this function an arbitrary1135 * null-terminated string.1136 */1137externintget_sha1_hex(const char*hex,unsigned char*sha1);1138externintget_oid_hex(const char*hex,struct object_id *sha1);11391140/*1141 * Convert a binary sha1 to its hex equivalent. The `_r` variant is reentrant,1142 * and writes the NUL-terminated output to the buffer `out`, which must be at1143 * least `GIT_SHA1_HEXSZ + 1` bytes, and returns a pointer to out for1144 * convenience.1145 *1146 * The non-`_r` variant returns a static buffer, but uses a ring of 41147 * buffers, making it safe to make multiple calls for a single statement, like:1148 *1149 * printf("%s -> %s", sha1_to_hex(one), sha1_to_hex(two));1150 */1151externchar*sha1_to_hex_r(char*out,const unsigned char*sha1);1152externchar*sha1_to_hex(const unsigned char*sha1);/* static buffer result! */1153externchar*oid_to_hex(const struct object_id *oid);/* same static buffer as sha1_to_hex */11541155externintinterpret_branch_name(const char*str,int len,struct strbuf *);1156externintget_sha1_mb(const char*str,unsigned char*sha1);11571158externintvalidate_headref(const char*ref);11591160externintbase_name_compare(const char*name1,int len1,int mode1,const char*name2,int len2,int mode2);1161externintdf_name_compare(const char*name1,int len1,int mode1,const char*name2,int len2,int mode2);1162externintname_compare(const char*name1,size_t len1,const char*name2,size_t len2);1163externintcache_name_stage_compare(const char*name1,int len1,int stage1,const char*name2,int len2,int stage2);11641165externvoid*read_object_with_reference(const unsigned char*sha1,1166const char*required_type,1167unsigned long*size,1168unsigned char*sha1_ret);11691170externstruct object *peel_to_type(const char*name,int namelen,1171struct object *o,enum object_type);11721173struct date_mode {1174enum date_mode_type {1175 DATE_NORMAL =0,1176 DATE_RELATIVE,1177 DATE_SHORT,1178 DATE_ISO8601,1179 DATE_ISO8601_STRICT,1180 DATE_RFC2822,1181 DATE_STRFTIME,1182 DATE_RAW1183} type;1184const char*strftime_fmt;1185int local;1186};11871188/*1189 * Convenience helper for passing a constant type, like:1190 *1191 * show_date(t, tz, DATE_MODE(NORMAL));1192 */1193#define DATE_MODE(t) date_mode_from_type(DATE_##t)1194struct date_mode *date_mode_from_type(enum date_mode_type type);11951196const char*show_date(unsigned long time,int timezone,const struct date_mode *mode);1197voidshow_date_relative(unsigned long time,int tz,const struct timeval *now,1198struct strbuf *timebuf);1199intparse_date(const char*date,struct strbuf *out);1200intparse_date_basic(const char*date,unsigned long*timestamp,int*offset);1201intparse_expiry_date(const char*date,unsigned long*timestamp);1202voiddatestamp(struct strbuf *out);1203#define approxidate(s) approxidate_careful((s), NULL)1204unsigned longapproxidate_careful(const char*,int*);1205unsigned longapproxidate_relative(const char*date,const struct timeval *now);1206voidparse_date_format(const char*format,struct date_mode *mode);1207intdate_overflows(unsigned long date);12081209#define IDENT_STRICT 11210#define IDENT_NO_DATE 21211#define IDENT_NO_NAME 41212externconst char*git_author_info(int);1213externconst char*git_committer_info(int);1214externconst char*fmt_ident(const char*name,const char*email,const char*date_str,int);1215externconst char*fmt_name(const char*name,const char*email);1216externconst char*ident_default_name(void);1217externconst char*ident_default_email(void);1218externconst char*git_editor(void);1219externconst char*git_pager(int stdout_is_tty);1220externintgit_ident_config(const char*,const char*,void*);12211222struct ident_split {1223const char*name_begin;1224const char*name_end;1225const char*mail_begin;1226const char*mail_end;1227const char*date_begin;1228const char*date_end;1229const char*tz_begin;1230const char*tz_end;1231};1232/*1233 * Signals an success with 0, but time part of the result may be NULL1234 * if the input lacks timestamp and zone1235 */1236externintsplit_ident_line(struct ident_split *,const char*,int);12371238/*1239 * Like show_date, but pull the timestamp and tz parameters from1240 * the ident_split. It will also sanity-check the values and produce1241 * a well-known sentinel date if they appear bogus.1242 */1243const char*show_ident_date(const struct ident_split *id,1244const struct date_mode *mode);12451246/*1247 * Compare split idents for equality or strict ordering. Note that we1248 * compare only the ident part of the line, ignoring any timestamp.1249 *1250 * Because there are two fields, we must choose one as the primary key; we1251 * currently arbitrarily pick the email.1252 */1253externintident_cmp(const struct ident_split *,const struct ident_split *);12541255struct checkout {1256struct index_state *istate;1257const char*base_dir;1258int base_dir_len;1259unsigned force:1,1260 quiet:1,1261 not_new:1,1262 refresh_cache:1;1263};12641265#define TEMPORARY_FILENAME_LENGTH 251266externintcheckout_entry(struct cache_entry *ce,const struct checkout *state,char*topath);12671268struct cache_def {1269struct strbuf path;1270int flags;1271int track_flags;1272int prefix_len_stat_func;1273};1274#define CACHE_DEF_INIT { STRBUF_INIT, 0, 0, 0 }1275staticinlinevoidcache_def_clear(struct cache_def *cache)1276{1277strbuf_release(&cache->path);1278}12791280externinthas_symlink_leading_path(const char*name,int len);1281externintthreaded_has_symlink_leading_path(struct cache_def *,const char*,int);1282externintcheck_leading_path(const char*name,int len);1283externinthas_dirs_only_path(const char*name,int len,int prefix_len);1284externvoidschedule_dir_for_removal(const char*name,int len);1285externvoidremove_scheduled_dirs(void);12861287externstruct alternate_object_database {1288struct alternate_object_database *next;1289char*name;1290char base[FLEX_ARRAY];/* more */1291} *alt_odb_list;1292externvoidprepare_alt_odb(void);1293externvoidread_info_alternates(const char* relative_base,int depth);1294externvoidadd_to_alternates_file(const char*reference);1295typedefintalt_odb_fn(struct alternate_object_database *,void*);1296externintforeach_alt_odb(alt_odb_fn,void*);12971298struct pack_window {1299struct pack_window *next;1300unsigned char*base;1301 off_t offset;1302size_t len;1303unsigned int last_used;1304unsigned int inuse_cnt;1305};13061307externstruct packed_git {1308struct packed_git *next;1309struct pack_window *windows;1310 off_t pack_size;1311const void*index_data;1312size_t index_size;1313uint32_t num_objects;1314uint32_t num_bad_objects;1315unsigned char*bad_object_sha1;1316int index_version;1317time_t mtime;1318int pack_fd;1319unsigned pack_local:1,1320 pack_keep:1,1321 freshened:1,1322 do_not_close:1;1323unsigned char sha1[20];1324struct revindex_entry *revindex;1325/* something like ".git/objects/pack/xxxxx.pack" */1326char pack_name[FLEX_ARRAY];/* more */1327} *packed_git;13281329struct pack_entry {1330 off_t offset;1331unsigned char sha1[20];1332struct packed_git *p;1333};13341335externstruct packed_git *parse_pack_index(unsigned char*sha1,const char*idx_path);13361337/* A hook to report invalid files in pack directory */1338#define PACKDIR_FILE_PACK 11339#define PACKDIR_FILE_IDX 21340#define PACKDIR_FILE_GARBAGE 41341externvoid(*report_garbage)(unsigned seen_bits,const char*path);13421343externvoidprepare_packed_git(void);1344externvoidreprepare_packed_git(void);1345externvoidinstall_packed_git(struct packed_git *pack);13461347externstruct packed_git *find_sha1_pack(const unsigned char*sha1,1348struct packed_git *packs);13491350externvoidpack_report(void);13511352/*1353 * mmap the index file for the specified packfile (if it is not1354 * already mmapped). Return 0 on success.1355 */1356externintopen_pack_index(struct packed_git *);13571358/*1359 * munmap the index file for the specified packfile (if it is1360 * currently mmapped).1361 */1362externvoidclose_pack_index(struct packed_git *);13631364externunsigned char*use_pack(struct packed_git *,struct pack_window **, off_t,unsigned long*);1365externvoidclose_pack_windows(struct packed_git *);1366externvoidclose_all_packs(void);1367externvoidunuse_pack(struct pack_window **);1368externvoidfree_pack_by_name(const char*);1369externvoidclear_delta_base_cache(void);1370externstruct packed_git *add_packed_git(const char*path,size_t path_len,int local);13711372/*1373 * Return the SHA-1 of the nth object within the specified packfile.1374 * Open the index if it is not already open. The return value points1375 * at the SHA-1 within the mmapped index. Return NULL if there is an1376 * error.1377 */1378externconst unsigned char*nth_packed_object_sha1(struct packed_git *,uint32_t n);13791380/*1381 * Return the offset of the nth object within the specified packfile.1382 * The index must already be opened.1383 */1384extern off_t nth_packed_object_offset(const struct packed_git *,uint32_t n);13851386/*1387 * If the object named sha1 is present in the specified packfile,1388 * return its offset within the packfile; otherwise, return 0.1389 */1390extern off_t find_pack_entry_one(const unsigned char*sha1,struct packed_git *);13911392externintis_pack_valid(struct packed_git *);1393externvoid*unpack_entry(struct packed_git *, off_t,enum object_type *,unsigned long*);1394externunsigned longunpack_object_header_buffer(const unsigned char*buf,unsigned long len,enum object_type *type,unsigned long*sizep);1395externunsigned longget_size_from_delta(struct packed_git *,struct pack_window **, off_t);1396externintunpack_object_header(struct packed_git *,struct pack_window **, off_t *,unsigned long*);13971398/*1399 * Iterate over the files in the loose-object parts of the object1400 * directory "path", triggering the following callbacks:1401 *1402 * - loose_object is called for each loose object we find.1403 *1404 * - loose_cruft is called for any files that do not appear to be1405 * loose objects. Note that we only look in the loose object1406 * directories "objects/[0-9a-f]{2}/", so we will not report1407 * "objects/foobar" as cruft.1408 *1409 * - loose_subdir is called for each top-level hashed subdirectory1410 * of the object directory (e.g., "$OBJDIR/f0"). It is called1411 * after the objects in the directory are processed.1412 *1413 * Any callback that is NULL will be ignored. Callbacks returning non-zero1414 * will end the iteration.1415 *1416 * In the "buf" variant, "path" is a strbuf which will also be used as a1417 * scratch buffer, but restored to its original contents before1418 * the function returns.1419 */1420typedefinteach_loose_object_fn(const unsigned char*sha1,1421const char*path,1422void*data);1423typedefinteach_loose_cruft_fn(const char*basename,1424const char*path,1425void*data);1426typedefinteach_loose_subdir_fn(int nr,1427const char*path,1428void*data);1429intfor_each_loose_file_in_objdir(const char*path,1430 each_loose_object_fn obj_cb,1431 each_loose_cruft_fn cruft_cb,1432 each_loose_subdir_fn subdir_cb,1433void*data);1434intfor_each_loose_file_in_objdir_buf(struct strbuf *path,1435 each_loose_object_fn obj_cb,1436 each_loose_cruft_fn cruft_cb,1437 each_loose_subdir_fn subdir_cb,1438void*data);14391440/*1441 * Iterate over loose and packed objects in both the local1442 * repository and any alternates repositories (unless the1443 * LOCAL_ONLY flag is set).1444 */1445#define FOR_EACH_OBJECT_LOCAL_ONLY 0x11446typedefinteach_packed_object_fn(const unsigned char*sha1,1447struct packed_git *pack,1448uint32_t pos,1449void*data);1450externintfor_each_loose_object(each_loose_object_fn,void*,unsigned flags);1451externintfor_each_packed_object(each_packed_object_fn,void*,unsigned flags);14521453struct object_info {1454/* Request */1455enum object_type *typep;1456unsigned long*sizep;1457unsigned long*disk_sizep;1458unsigned char*delta_base_sha1;1459struct strbuf *typename;14601461/* Response */1462enum{1463 OI_CACHED,1464 OI_LOOSE,1465 OI_PACKED,1466 OI_DBCACHED1467} whence;1468union{1469/*1470 * struct {1471 * ... Nothing to expose in this case1472 * } cached;1473 * struct {1474 * ... Nothing to expose in this case1475 * } loose;1476 */1477struct{1478struct packed_git *pack;1479 off_t offset;1480unsigned int is_delta;1481} packed;1482} u;1483};1484externintsha1_object_info_extended(const unsigned char*,struct object_info *,unsigned flags);14851486/* Dumb servers support */1487externintupdate_server_info(int);14881489/* git_config_parse_key() returns these negated: */1490#define CONFIG_INVALID_KEY 11491#define CONFIG_NO_SECTION_OR_NAME 21492/* git_config_set(), git_config_set_multivar() return the above or these: */1493#define CONFIG_NO_LOCK -11494#define CONFIG_INVALID_FILE 31495#define CONFIG_NO_WRITE 41496#define CONFIG_NOTHING_SET 51497#define CONFIG_INVALID_PATTERN 61498#define CONFIG_GENERIC_ERROR 714991500#define CONFIG_REGEX_NONE ((void *)1)15011502struct git_config_source {1503unsigned int use_stdin:1;1504const char*file;1505const char*blob;1506};15071508typedefint(*config_fn_t)(const char*,const char*,void*);1509externintgit_default_config(const char*,const char*,void*);1510externintgit_config_from_file(config_fn_t fn,const char*,void*);1511externintgit_config_from_buf(config_fn_t fn,const char*name,1512const char*buf,size_t len,void*data);1513externvoidgit_config_push_parameter(const char*text);1514externintgit_config_from_parameters(config_fn_t fn,void*data);1515externvoidgit_config(config_fn_t fn,void*);1516externintgit_config_with_options(config_fn_t fn,void*,1517struct git_config_source *config_source,1518int respect_includes);1519externintgit_config_early(config_fn_t fn,void*,const char*repo_config);1520externintgit_parse_ulong(const char*,unsigned long*);1521externintgit_parse_maybe_bool(const char*);1522externintgit_config_int(const char*,const char*);1523externint64_tgit_config_int64(const char*,const char*);1524externunsigned longgit_config_ulong(const char*,const char*);1525externintgit_config_bool_or_int(const char*,const char*,int*);1526externintgit_config_bool(const char*,const char*);1527externintgit_config_maybe_bool(const char*,const char*);1528externintgit_config_string(const char**,const char*,const char*);1529externintgit_config_pathname(const char**,const char*,const char*);1530externintgit_config_set_in_file(const char*,const char*,const char*);1531externintgit_config_set(const char*,const char*);1532externintgit_config_parse_key(const char*,char**,int*);1533externintgit_config_key_is_valid(const char*key);1534externintgit_config_set_multivar(const char*,const char*,const char*,int);1535externintgit_config_set_multivar_in_file(const char*,const char*,const char*,const char*,int);1536externintgit_config_rename_section(const char*,const char*);1537externintgit_config_rename_section_in_file(const char*,const char*,const char*);1538externconst char*git_etc_gitconfig(void);1539externintcheck_repository_format_version(const char*var,const char*value,void*cb);1540externintgit_env_bool(const char*,int);1541externunsigned longgit_env_ulong(const char*,unsigned long);1542externintgit_config_system(void);1543externintconfig_error_nonbool(const char*);1544#if defined(__GNUC__)1545#define config_error_nonbool(s) (config_error_nonbool(s), const_error())1546#endif1547externconst char*get_log_output_encoding(void);1548externconst char*get_commit_output_encoding(void);15491550externintgit_config_parse_parameter(const char*, config_fn_t fn,void*data);15511552struct config_include_data {1553int depth;1554 config_fn_t fn;1555void*data;1556};1557#define CONFIG_INCLUDE_INIT { 0 }1558externintgit_config_include(const char*name,const char*value,void*data);15591560/*1561 * Match and parse a config key of the form:1562 *1563 * section.(subsection.)?key1564 *1565 * (i.e., what gets handed to a config_fn_t). The caller provides the section;1566 * we return -1 if it does not match, 0 otherwise. The subsection and key1567 * out-parameters are filled by the function (and subsection is NULL if it is1568 * missing).1569 */1570externintparse_config_key(const char*var,1571const char*section,1572const char**subsection,int*subsection_len,1573const char**key);15741575struct config_set_element {1576struct hashmap_entry ent;1577char*key;1578struct string_list value_list;1579};15801581struct configset_list_item {1582struct config_set_element *e;1583int value_index;1584};15851586/*1587 * the contents of the list are ordered according to their1588 * position in the config files and order of parsing the files.1589 * (i.e. key-value pair at the last position of .git/config will1590 * be at the last item of the list)1591 */1592struct configset_list {1593struct configset_list_item *items;1594unsigned int nr, alloc;1595};15961597struct config_set {1598struct hashmap config_hash;1599int hash_initialized;1600struct configset_list list;1601};16021603externvoidgit_configset_init(struct config_set *cs);1604externintgit_configset_add_file(struct config_set *cs,const char*filename);1605externintgit_configset_get_value(struct config_set *cs,const char*key,const char**value);1606externconst struct string_list *git_configset_get_value_multi(struct config_set *cs,const char*key);1607externvoidgit_configset_clear(struct config_set *cs);1608externintgit_configset_get_string_const(struct config_set *cs,const char*key,const char**dest);1609externintgit_configset_get_string(struct config_set *cs,const char*key,char**dest);1610externintgit_configset_get_int(struct config_set *cs,const char*key,int*dest);1611externintgit_configset_get_ulong(struct config_set *cs,const char*key,unsigned long*dest);1612externintgit_configset_get_bool(struct config_set *cs,const char*key,int*dest);1613externintgit_configset_get_bool_or_int(struct config_set *cs,const char*key,int*is_bool,int*dest);1614externintgit_configset_get_maybe_bool(struct config_set *cs,const char*key,int*dest);1615externintgit_configset_get_pathname(struct config_set *cs,const char*key,const char**dest);16161617externintgit_config_get_value(const char*key,const char**value);1618externconst struct string_list *git_config_get_value_multi(const char*key);1619externvoidgit_config_clear(void);1620externvoidgit_config_iter(config_fn_t fn,void*data);1621externintgit_config_get_string_const(const char*key,const char**dest);1622externintgit_config_get_string(const char*key,char**dest);1623externintgit_config_get_int(const char*key,int*dest);1624externintgit_config_get_ulong(const char*key,unsigned long*dest);1625externintgit_config_get_bool(const char*key,int*dest);1626externintgit_config_get_bool_or_int(const char*key,int*is_bool,int*dest);1627externintgit_config_get_maybe_bool(const char*key,int*dest);1628externintgit_config_get_pathname(const char*key,const char**dest);1629externintgit_config_get_untracked_cache(void);16301631/*1632 * This is a hack for test programs like test-dump-untracked-cache to1633 * ensure that they do not modify the untracked cache when reading it.1634 * Do not use it otherwise!1635 */1636externint ignore_untracked_cache_config;16371638struct key_value_info {1639const char*filename;1640int linenr;1641};16421643extern NORETURN voidgit_die_config(const char*key,const char*err, ...)__attribute__((format(printf,2,3)));1644extern NORETURN voidgit_die_config_linenr(const char*key,const char*filename,int linenr);16451646externintcommitter_ident_sufficiently_given(void);1647externintauthor_ident_sufficiently_given(void);16481649externconst char*git_commit_encoding;1650externconst char*git_log_output_encoding;1651externconst char*git_mailmap_file;1652externconst char*git_mailmap_blob;16531654/* IO helper functions */1655externvoidmaybe_flush_or_die(FILE*,const char*);1656__attribute__((format(printf,2,3)))1657externvoidfprintf_or_die(FILE*,const char*fmt, ...);16581659#define COPY_READ_ERROR (-2)1660#define COPY_WRITE_ERROR (-3)1661externintcopy_fd(int ifd,int ofd);1662externintcopy_file(const char*dst,const char*src,int mode);1663externintcopy_file_with_time(const char*dst,const char*src,int mode);16641665externvoidwrite_or_die(int fd,const void*buf,size_t count);1666externintwrite_or_whine(int fd,const void*buf,size_t count,const char*msg);1667externintwrite_or_whine_pipe(int fd,const void*buf,size_t count,const char*msg);1668externvoidfsync_or_die(int fd,const char*);16691670extern ssize_t read_in_full(int fd,void*buf,size_t count);1671extern ssize_t write_in_full(int fd,const void*buf,size_t count);1672extern ssize_t pread_in_full(int fd,void*buf,size_t count, off_t offset);16731674staticinline ssize_t write_str_in_full(int fd,const char*str)1675{1676returnwrite_in_full(fd, str,strlen(str));1677}16781679externintwrite_file(const char*path,const char*fmt, ...);1680externintwrite_file_gently(const char*path,const char*fmt, ...);16811682/* pager.c */1683externvoidsetup_pager(void);1684externconst char*pager_program;1685externintpager_in_use(void);1686externint pager_use_color;1687externintterm_columns(void);1688externintdecimal_width(uintmax_t);1689externintcheck_pager_config(const char*cmd);1690externvoidprepare_pager_args(struct child_process *,const char*pager);16911692externconst char*editor_program;1693externconst char*askpass_program;1694externconst char*excludes_file;16951696/* base85 */1697intdecode_85(char*dst,const char*line,int linelen);1698voidencode_85(char*buf,const unsigned char*data,int bytes);16991700/* alloc.c */1701externvoid*alloc_blob_node(void);1702externvoid*alloc_tree_node(void);1703externvoid*alloc_commit_node(void);1704externvoid*alloc_tag_node(void);1705externvoid*alloc_object_node(void);1706externvoidalloc_report(void);1707externunsigned intalloc_commit_index(void);17081709/* pkt-line.c */1710voidpacket_trace_identity(const char*prog);17111712/* add */1713/*1714 * return 0 if success, 1 - if addition of a file failed and1715 * ADD_FILES_IGNORE_ERRORS was specified in flags1716 */1717intadd_files_to_cache(const char*prefix,const struct pathspec *pathspec,int flags);17181719/* diff.c */1720externint diff_auto_refresh_index;17211722/* match-trees.c */1723voidshift_tree(const unsigned char*,const unsigned char*,unsigned char*,int);1724voidshift_tree_by(const unsigned char*,const unsigned char*,unsigned char*,const char*);17251726/*1727 * whitespace rules.1728 * used by both diff and apply1729 * last two digits are tab width1730 */1731#define WS_BLANK_AT_EOL 01001732#define WS_SPACE_BEFORE_TAB 02001733#define WS_INDENT_WITH_NON_TAB 04001734#define WS_CR_AT_EOL 010001735#define WS_BLANK_AT_EOF 020001736#define WS_TAB_IN_INDENT 040001737#define WS_TRAILING_SPACE (WS_BLANK_AT_EOL|WS_BLANK_AT_EOF)1738#define WS_DEFAULT_RULE (WS_TRAILING_SPACE|WS_SPACE_BEFORE_TAB|8)1739#define WS_TAB_WIDTH_MASK 0771740externunsigned whitespace_rule_cfg;1741externunsignedwhitespace_rule(const char*);1742externunsignedparse_whitespace_rule(const char*);1743externunsignedws_check(const char*line,int len,unsigned ws_rule);1744externvoidws_check_emit(const char*line,int len,unsigned ws_rule,FILE*stream,const char*set,const char*reset,const char*ws);1745externchar*whitespace_error_string(unsigned ws);1746externvoidws_fix_copy(struct strbuf *,const char*,int,unsigned,int*);1747externintws_blank_line(const char*line,int len,unsigned ws_rule);1748#define ws_tab_width(rule) ((rule) & WS_TAB_WIDTH_MASK)17491750/* ls-files */1751voidoverlay_tree_on_cache(const char*tree_name,const char*prefix);17521753char*alias_lookup(const char*alias);1754intsplit_cmdline(char*cmdline,const char***argv);1755/* Takes a negative value returned by split_cmdline */1756const char*split_cmdline_strerror(int cmdline_errno);17571758/* git.c */1759struct startup_info {1760int have_repository;1761const char*prefix;1762};1763externstruct startup_info *startup_info;17641765/* merge.c */1766struct commit_list;1767inttry_merge_command(const char*strategy,size_t xopts_nr,1768const char**xopts,struct commit_list *common,1769const char*head_arg,struct commit_list *remotes);1770intcheckout_fast_forward(const unsigned char*from,1771const unsigned char*to,1772int overwrite_ignore);177317741775intsane_execvp(const char*file,char*const argv[]);17761777/*1778 * A struct to encapsulate the concept of whether a file has changed1779 * since we last checked it. This uses criteria similar to those used1780 * for the index.1781 */1782struct stat_validity {1783struct stat_data *sd;1784};17851786voidstat_validity_clear(struct stat_validity *sv);17871788/*1789 * Returns 1 if the path is a regular file (or a symlink to a regular1790 * file) and matches the saved stat_validity, 0 otherwise. A missing1791 * or inaccessible file is considered a match if the struct was just1792 * initialized, or if the previous update found an inaccessible file.1793 */1794intstat_validity_check(struct stat_validity *sv,const char*path);17951796/*1797 * Update the stat_validity from a file opened at descriptor fd. If1798 * the file is missing, inaccessible, or not a regular file, then1799 * future calls to stat_validity_check will match iff one of those1800 * conditions continues to be true.1801 */1802voidstat_validity_update(struct stat_validity *sv,int fd);18031804intversioncmp(const char*s1,const char*s2);1805voidsleep_millisec(int millisec);18061807/*1808 * Create a directory and (if share is nonzero) adjust its permissions1809 * according to the shared_repository setting. Only use this for1810 * directories under $GIT_DIR. Don't use it for working tree1811 * directories.1812 */1813voidsafe_create_dir(const char*dir,int share);18141815#endif/* CACHE_H */