4 #include "git-compat-util.h"
11 #define git_SHA_CTX SHA_CTX
12 #define git_SHA1_Init SHA1_Init
13 #define git_SHA1_Update SHA1_Update
14 #define git_SHA1_Final SHA1_Final
18 #if defined(NO_DEFLATE_BOUND) || ZLIB_VERNUM < 0x1200
19 #define deflateBound(c,s) ((s) + (((s) + 7) >> 3) + (((s) + 63) >> 6) + 11)
22 void git_inflate_init(z_streamp strm);
23 void git_inflate_end(z_streamp strm);
24 int git_inflate(z_streamp strm, int flush);
26 #if defined(DT_UNKNOWN) && !defined(NO_D_TYPE_IN_DIRENT)
27 #define DTYPE(de) ((de)->d_type)
37 #define DTYPE(de) DT_UNKNOWN
40 /* unknown mode (impossible combination S_IFIFO|S_IFCHR) */
41 #define S_IFINVALID 0030000
44 * A "directory link" is a link to another git directory.
46 * The value 0160000 is not normally a valid mode, and
47 * also just happens to be S_IFDIR + S_IFLNK
49 * NOTE! We *really* shouldn't depend on the S_IFxxx macros
50 * always having the same values everywhere. We should use
51 * our internal git values for these things, and then we can
52 * translate that to the OS-specific value. It just so
53 * happens that everybody shares the same bit representation
54 * in the UNIX world (and apparently wider too..)
56 #define S_IFGITLINK 0160000
57 #define S_ISGITLINK(m) (((m) & S_IFMT) == S_IFGITLINK)
60 * Intensive research over the course of many years has shown that
61 * port 9418 is totally unused by anything else. Or
63 * Your search - "port 9418" - did not match any documents.
65 * as www.google.com puts it.
67 * This port has been properly assigned for git use by IANA:
68 * git (Assigned-9418) [I06-050728-0001].
70 * git 9418/tcp git pack transfer service
71 * git 9418/udp git pack transfer service
73 * with Linus Torvalds <torvalds@osdl.org> as the point of
74 * contact. September 2005.
76 * See http://www.iana.org/assignments/port-numbers
78 #define DEFAULT_GIT_PORT 9418
81 * Basic data structures for the directory cache
84 #define CACHE_SIGNATURE 0x44495243 /* "DIRC" */
86 unsigned int hdr_signature;
87 unsigned int hdr_version;
88 unsigned int hdr_entries;
92 * The "cache_time" is just the low 32 bits of the
93 * time. It doesn't matter if it overflows - we only
94 * check it for equality in the 32 bits we save.
102 * dev/ino/uid/gid/size are also just tracked to the low 32 bits
103 * Again - this is just a (very strong in practice) heuristic that
104 * the inode hasn't changed.
106 * We save the fields in big-endian order to allow using the
107 * index file over NFS transparently.
109 struct ondisk_cache_entry {
110 struct cache_time ctime;
111 struct cache_time mtime;
118 unsigned char sha1[20];
119 unsigned short flags;
120 char name[FLEX_ARRAY]; /* more */
124 * This struct is used when CE_EXTENDED bit is 1
125 * The struct must match ondisk_cache_entry exactly from
128 struct ondisk_cache_entry_extended {
129 struct cache_time ctime;
130 struct cache_time mtime;
137 unsigned char sha1[20];
138 unsigned short flags;
139 unsigned short flags2;
140 char name[FLEX_ARRAY]; /* more */
144 struct cache_time ce_ctime;
145 struct cache_time ce_mtime;
148 unsigned int ce_mode;
151 unsigned int ce_size;
152 unsigned int ce_flags;
153 unsigned char sha1[20];
154 struct cache_entry *next;
155 char name[FLEX_ARRAY]; /* more */
158 #define CE_NAMEMASK (0x0fff)
159 #define CE_STAGEMASK (0x3000)
160 #define CE_EXTENDED (0x4000)
161 #define CE_VALID (0x8000)
162 #define CE_STAGESHIFT 12
165 * Range 0xFFFF0000 in ce_flags is divided into
166 * two parts: in-memory flags and on-disk ones.
167 * Flags in CE_EXTENDED_FLAGS will get saved on-disk
168 * if you want to save a new flag, add it in
171 * In-memory only flags
173 #define CE_UPDATE (0x10000)
174 #define CE_REMOVE (0x20000)
175 #define CE_UPTODATE (0x40000)
176 #define CE_ADDED (0x80000)
178 #define CE_HASHED (0x100000)
179 #define CE_UNHASHED (0x200000)
180 #define CE_CONFLICTED (0x800000)
182 /* Only remove in work directory, not index */
183 #define CE_WT_REMOVE (0x400000)
186 * Extended on-disk flags
188 #define CE_INTENT_TO_ADD 0x20000000
189 #define CE_SKIP_WORKTREE 0x40000000
190 /* CE_EXTENDED2 is for future extension */
191 #define CE_EXTENDED2 0x80000000
193 #define CE_EXTENDED_FLAGS (CE_INTENT_TO_ADD | CE_SKIP_WORKTREE)
196 * Safeguard to avoid saving wrong flags:
197 * - CE_EXTENDED2 won't get saved until its semantic is known
198 * - Bits in 0x0000FFFF have been saved in ce_flags already
199 * - Bits in 0x003F0000 are currently in-memory flags
201 #if CE_EXTENDED_FLAGS & 0x803FFFFF
202 #error "CE_EXTENDED_FLAGS out of range"
206 * Copy the sha1 and stat state of a cache entry from one to
207 * another. But we never change the name, or the hash state!
209 #define CE_STATE_MASK (CE_HASHED | CE_UNHASHED)
210 static inline void copy_cache_entry(struct cache_entry *dst, struct cache_entry *src)
212 unsigned int state = dst->ce_flags & CE_STATE_MASK;
214 /* Don't copy hash chain and name */
215 memcpy(dst, src, offsetof(struct cache_entry, next));
217 /* Restore the hash state */
218 dst->ce_flags = (dst->ce_flags & ~CE_STATE_MASK) | state;
221 static inline unsigned create_ce_flags(size_t len, unsigned stage)
223 if (len >= CE_NAMEMASK)
225 return (len | (stage << CE_STAGESHIFT));
228 static inline size_t ce_namelen(const struct cache_entry *ce)
230 size_t len = ce->ce_flags & CE_NAMEMASK;
231 if (len < CE_NAMEMASK)
233 return strlen(ce->name + CE_NAMEMASK) + CE_NAMEMASK;
236 #define ce_size(ce) cache_entry_size(ce_namelen(ce))
237 #define ondisk_ce_size(ce) (((ce)->ce_flags & CE_EXTENDED) ? \
238 ondisk_cache_entry_extended_size(ce_namelen(ce)) : \
239 ondisk_cache_entry_size(ce_namelen(ce)))
240 #define ce_stage(ce) ((CE_STAGEMASK & (ce)->ce_flags) >> CE_STAGESHIFT)
241 #define ce_uptodate(ce) ((ce)->ce_flags & CE_UPTODATE)
242 #define ce_skip_worktree(ce) ((ce)->ce_flags & CE_SKIP_WORKTREE)
243 #define ce_mark_uptodate(ce) ((ce)->ce_flags |= CE_UPTODATE)
245 #define ce_permissions(mode) (((mode) & 0100) ? 0755 : 0644)
246 static inline unsigned int create_ce_mode(unsigned int mode)
250 if (S_ISDIR(mode) || S_ISGITLINK(mode))
252 return S_IFREG | ce_permissions(mode);
254 static inline unsigned int ce_mode_from_stat(struct cache_entry *ce, unsigned int mode)
256 extern int trust_executable_bit, has_symlinks;
257 if (!has_symlinks && S_ISREG(mode) &&
258 ce && S_ISLNK(ce->ce_mode))
260 if (!trust_executable_bit && S_ISREG(mode)) {
261 if (ce && S_ISREG(ce->ce_mode))
263 return create_ce_mode(0666);
265 return create_ce_mode(mode);
267 static inline int ce_to_dtype(const struct cache_entry *ce)
269 unsigned ce_mode = ntohl(ce->ce_mode);
270 if (S_ISREG(ce_mode))
272 else if (S_ISDIR(ce_mode) || S_ISGITLINK(ce_mode))
274 else if (S_ISLNK(ce_mode))
279 #define canon_mode(mode) \
280 (S_ISREG(mode) ? (S_IFREG | ce_permissions(mode)) : \
281 S_ISLNK(mode) ? S_IFLNK : S_ISDIR(mode) ? S_IFDIR : S_IFGITLINK)
283 #define flexible_size(STRUCT,len) ((offsetof(struct STRUCT,name) + (len) + 8) & ~7)
284 #define cache_entry_size(len) flexible_size(cache_entry,len)
285 #define ondisk_cache_entry_size(len) flexible_size(ondisk_cache_entry,len)
286 #define ondisk_cache_entry_extended_size(len) flexible_size(ondisk_cache_entry_extended,len)
289 struct cache_entry **cache;
290 unsigned int cache_nr, cache_alloc, cache_changed;
291 struct cache_tree *cache_tree;
292 struct cache_time timestamp;
294 unsigned name_hash_initialized : 1,
296 struct hash_table name_hash;
299 extern struct index_state the_index;
302 extern void add_name_hash(struct index_state *istate, struct cache_entry *ce);
304 * We don't actually *remove* it, we can just mark it invalid so that
305 * we won't find it in lookups.
307 * Not only would we have to search the lists (simple enough), but
308 * we'd also have to rehash other hash buckets in case this makes the
309 * hash bucket empty (common). So it's much better to just mark
312 static inline void remove_name_hash(struct cache_entry *ce)
314 ce->ce_flags |= CE_UNHASHED;
318 #ifndef NO_THE_INDEX_COMPATIBILITY_MACROS
319 #define active_cache (the_index.cache)
320 #define active_nr (the_index.cache_nr)
321 #define active_alloc (the_index.cache_alloc)
322 #define active_cache_changed (the_index.cache_changed)
323 #define active_cache_tree (the_index.cache_tree)
325 #define read_cache() read_index(&the_index)
326 #define read_cache_from(path) read_index_from(&the_index, (path))
327 #define read_cache_preload(pathspec) read_index_preload(&the_index, (pathspec))
328 #define is_cache_unborn() is_index_unborn(&the_index)
329 #define read_cache_unmerged() read_index_unmerged(&the_index)
330 #define write_cache(newfd, cache, entries) write_index(&the_index, (newfd))
331 #define discard_cache() discard_index(&the_index)
332 #define unmerged_cache() unmerged_index(&the_index)
333 #define cache_name_pos(name, namelen) index_name_pos(&the_index,(name),(namelen))
334 #define add_cache_entry(ce, option) add_index_entry(&the_index, (ce), (option))
335 #define rename_cache_entry_at(pos, new_name) rename_index_entry_at(&the_index, (pos), (new_name))
336 #define remove_cache_entry_at(pos) remove_index_entry_at(&the_index, (pos))
337 #define remove_file_from_cache(path) remove_file_from_index(&the_index, (path))
338 #define add_to_cache(path, st, flags) add_to_index(&the_index, (path), (st), (flags))
339 #define add_file_to_cache(path, flags) add_file_to_index(&the_index, (path), (flags))
340 #define refresh_cache(flags) refresh_index(&the_index, (flags), NULL, NULL, NULL)
341 #define ce_match_stat(ce, st, options) ie_match_stat(&the_index, (ce), (st), (options))
342 #define ce_modified(ce, st, options) ie_modified(&the_index, (ce), (st), (options))
343 #define cache_name_exists(name, namelen, igncase) index_name_exists(&the_index, (name), (namelen), (igncase))
344 #define cache_name_is_other(name, namelen) index_name_is_other(&the_index, (name), (namelen))
354 /* 5 for future expansion */
361 static inline enum object_type object_type(unsigned int mode)
363 return S_ISDIR(mode) ? OBJ_TREE :
364 S_ISGITLINK(mode) ? OBJ_COMMIT :
368 #define GIT_DIR_ENVIRONMENT "GIT_DIR"
369 #define GIT_WORK_TREE_ENVIRONMENT "GIT_WORK_TREE"
370 #define DEFAULT_GIT_DIR_ENVIRONMENT ".git"
371 #define DB_ENVIRONMENT "GIT_OBJECT_DIRECTORY"
372 #define INDEX_ENVIRONMENT "GIT_INDEX_FILE"
373 #define GRAFT_ENVIRONMENT "GIT_GRAFT_FILE"
374 #define TEMPLATE_DIR_ENVIRONMENT "GIT_TEMPLATE_DIR"
375 #define CONFIG_ENVIRONMENT "GIT_CONFIG"
376 #define EXEC_PATH_ENVIRONMENT "GIT_EXEC_PATH"
377 #define CEILING_DIRECTORIES_ENVIRONMENT "GIT_CEILING_DIRECTORIES"
378 #define NO_REPLACE_OBJECTS_ENVIRONMENT "GIT_NO_REPLACE_OBJECTS"
379 #define GITATTRIBUTES_FILE ".gitattributes"
380 #define INFOATTRIBUTES_FILE "info/attributes"
381 #define ATTRIBUTE_MACRO_PREFIX "[attr]"
382 #define GIT_NOTES_REF_ENVIRONMENT "GIT_NOTES_REF"
383 #define GIT_NOTES_DEFAULT_REF "refs/notes/commits"
385 extern int is_bare_repository_cfg;
386 extern int is_bare_repository(void);
387 extern int is_inside_git_dir(void);
388 extern char *git_work_tree_cfg;
389 extern int is_inside_work_tree(void);
390 extern int have_git_dir(void);
391 extern const char *get_git_dir(void);
392 extern char *get_object_directory(void);
393 extern char *get_index_file(void);
394 extern char *get_graft_file(void);
395 extern int set_git_dir(const char *path);
396 extern const char *get_git_work_tree(void);
397 extern const char *read_gitfile_gently(const char *path);
398 extern void set_git_work_tree(const char *tree);
400 #define ALTERNATE_DB_ENVIRONMENT "GIT_ALTERNATE_OBJECT_DIRECTORIES"
402 extern const char **get_pathspec(const char *prefix, const char **pathspec);
403 extern void setup_work_tree(void);
404 extern const char *setup_git_directory_gently(int *);
405 extern const char *setup_git_directory(void);
406 extern const char *prefix_path(const char *prefix, int len, const char *path);
407 extern const char *prefix_filename(const char *prefix, int len, const char *path);
408 extern int check_filename(const char *prefix, const char *name);
409 extern void verify_filename(const char *prefix, const char *name);
410 extern void verify_non_filename(const char *prefix, const char *name);
412 #define INIT_DB_QUIET 0x0001
414 extern int init_db(const char *template_dir, unsigned int flags);
416 #define alloc_nr(x) (((x)+16)*3/2)
419 * Realloc the buffer pointed at by variable 'x' so that it can hold
420 * at least 'nr' entries; the number of entries currently allocated
421 * is 'alloc', using the standard growing factor alloc_nr() macro.
423 * DO NOT USE any expression with side-effect for 'x' or 'alloc'.
425 #define ALLOC_GROW(x, nr, alloc) \
427 if ((nr) > alloc) { \
428 if (alloc_nr(alloc) < (nr)) \
431 alloc = alloc_nr(alloc); \
432 x = xrealloc((x), alloc * sizeof(*(x))); \
436 /* Initialize and use the cache information */
437 extern int read_index(struct index_state *);
438 extern int read_index_preload(struct index_state *, const char **pathspec);
439 extern int read_index_from(struct index_state *, const char *path);
440 extern int is_index_unborn(struct index_state *);
441 extern int read_index_unmerged(struct index_state *);
442 extern int write_index(struct index_state *, int newfd);
443 extern int discard_index(struct index_state *);
444 extern int unmerged_index(const struct index_state *);
445 extern int verify_path(const char *path);
446 extern struct cache_entry *index_name_exists(struct index_state *istate, const char *name, int namelen, int igncase);
447 extern int index_name_pos(const struct index_state *, const char *name, int namelen);
448 #define ADD_CACHE_OK_TO_ADD 1 /* Ok to add */
449 #define ADD_CACHE_OK_TO_REPLACE 2 /* Ok to replace file/directory */
450 #define ADD_CACHE_SKIP_DFCHECK 4 /* Ok to skip DF conflict checks */
451 #define ADD_CACHE_JUST_APPEND 8 /* Append only; tree.c::read_tree() */
452 #define ADD_CACHE_NEW_ONLY 16 /* Do not replace existing ones */
453 extern int add_index_entry(struct index_state *, struct cache_entry *ce, int option);
454 extern void rename_index_entry_at(struct index_state *, int pos, const char *new_name);
455 extern int remove_index_entry_at(struct index_state *, int pos);
456 extern void remove_marked_cache_entries(struct index_state *istate);
457 extern int remove_file_from_index(struct index_state *, const char *path);
458 #define ADD_CACHE_VERBOSE 1
459 #define ADD_CACHE_PRETEND 2
460 #define ADD_CACHE_IGNORE_ERRORS 4
461 #define ADD_CACHE_IGNORE_REMOVAL 8
462 #define ADD_CACHE_INTENT 16
463 extern int add_to_index(struct index_state *, const char *path, struct stat *, int flags);
464 extern int add_file_to_index(struct index_state *, const char *path, int flags);
465 extern struct cache_entry *make_cache_entry(unsigned int mode, const unsigned char *sha1, const char *path, int stage, int refresh);
466 extern int ce_same_name(struct cache_entry *a, struct cache_entry *b);
467 extern int index_name_is_other(const struct index_state *, const char *, int);
469 /* do stat comparison even if CE_VALID is true */
470 #define CE_MATCH_IGNORE_VALID 01
471 /* do not check the contents but report dirty on racily-clean entries */
472 #define CE_MATCH_RACY_IS_DIRTY 02
473 /* do stat comparison even if CE_SKIP_WORKTREE is true */
474 #define CE_MATCH_IGNORE_SKIP_WORKTREE 04
475 extern int ie_match_stat(const struct index_state *, struct cache_entry *, struct stat *, unsigned int);
476 extern int ie_modified(const struct index_state *, struct cache_entry *, struct stat *, unsigned int);
478 extern int ce_path_match(const struct cache_entry *ce, const char **pathspec);
479 extern int index_fd(unsigned char *sha1, int fd, struct stat *st, int write_object, enum object_type type, const char *path);
480 extern int index_path(unsigned char *sha1, const char *path, struct stat *st, int write_object);
481 extern void fill_stat_cache_info(struct cache_entry *ce, struct stat *st);
483 #define REFRESH_REALLY 0x0001 /* ignore_valid */
484 #define REFRESH_UNMERGED 0x0002 /* allow unmerged */
485 #define REFRESH_QUIET 0x0004 /* be quiet about it */
486 #define REFRESH_IGNORE_MISSING 0x0008 /* ignore non-existent */
487 #define REFRESH_IGNORE_SUBMODULES 0x0010 /* ignore submodules */
488 #define REFRESH_IN_PORCELAIN 0x0020 /* user friendly output, not "needs update" */
489 extern int refresh_index(struct index_state *, unsigned int flags, const char **pathspec, char *seen, char *header_msg);
492 struct lock_file *next;
496 char filename[PATH_MAX];
498 #define LOCK_DIE_ON_ERROR 1
499 #define LOCK_NODEREF 2
500 extern int unable_to_lock_error(const char *path, int err);
501 extern NORETURN void unable_to_lock_index_die(const char *path, int err);
502 extern int hold_lock_file_for_update(struct lock_file *, const char *path, int);
503 extern int hold_lock_file_for_append(struct lock_file *, const char *path, int);
504 extern int commit_lock_file(struct lock_file *);
506 extern int hold_locked_index(struct lock_file *, int);
507 extern int commit_locked_index(struct lock_file *);
508 extern void set_alternate_index_output(const char *);
509 extern int close_lock_file(struct lock_file *);
510 extern void rollback_lock_file(struct lock_file *);
511 extern int delete_ref(const char *, const unsigned char *sha1, int delopt);
513 /* Environment bits from configuration mechanism */
514 extern int trust_executable_bit;
515 extern int trust_ctime;
516 extern int quote_path_fully;
517 extern int has_symlinks;
518 extern int ignore_case;
519 extern int assume_unchanged;
520 extern int prefer_symlink_refs;
521 extern int log_all_ref_updates;
522 extern int warn_ambiguous_refs;
523 extern int shared_repository;
524 extern const char *apply_default_whitespace;
525 extern const char *apply_default_ignorewhitespace;
526 extern int zlib_compression_level;
527 extern int core_compression_level;
528 extern int core_compression_seen;
529 extern size_t packed_git_window_size;
530 extern size_t packed_git_limit;
531 extern size_t delta_base_cache_limit;
532 extern int auto_crlf;
533 extern int read_replace_refs;
534 extern int fsync_object_files;
535 extern int core_preload_index;
536 extern int core_apply_sparse_checkout;
544 extern enum safe_crlf safe_crlf;
547 BRANCH_TRACK_UNSPECIFIED = -1,
548 BRANCH_TRACK_NEVER = 0,
551 BRANCH_TRACK_EXPLICIT,
554 enum rebase_setup_type {
555 AUTOREBASE_NEVER = 0,
561 enum push_default_type {
562 PUSH_DEFAULT_NOTHING = 0,
563 PUSH_DEFAULT_MATCHING,
564 PUSH_DEFAULT_TRACKING,
565 PUSH_DEFAULT_CURRENT,
568 extern enum branch_track git_branch_track;
569 extern enum rebase_setup_type autorebase;
570 extern enum push_default_type push_default;
572 enum object_creation_mode {
573 OBJECT_CREATION_USES_HARDLINKS = 0,
574 OBJECT_CREATION_USES_RENAMES = 1,
577 extern enum object_creation_mode object_creation_mode;
579 extern char *notes_ref_name;
581 extern int grafts_replace_parents;
583 #define GIT_REPO_VERSION 0
584 extern int repository_format_version;
585 extern int check_repository_format(void);
587 #define MTIME_CHANGED 0x0001
588 #define CTIME_CHANGED 0x0002
589 #define OWNER_CHANGED 0x0004
590 #define MODE_CHANGED 0x0008
591 #define INODE_CHANGED 0x0010
592 #define DATA_CHANGED 0x0020
593 #define TYPE_CHANGED 0x0040
595 extern char *mksnpath(char *buf, size_t n, const char *fmt, ...)
596 __attribute__((format (printf, 3, 4)));
597 extern char *git_snpath(char *buf, size_t n, const char *fmt, ...)
598 __attribute__((format (printf, 3, 4)));
599 extern char *git_pathdup(const char *fmt, ...)
600 __attribute__((format (printf, 1, 2)));
602 /* Return a statically allocated filename matching the sha1 signature */
603 extern char *mkpath(const char *fmt, ...) __attribute__((format (printf, 1, 2)));
604 extern char *git_path(const char *fmt, ...) __attribute__((format (printf, 1, 2)));
605 extern char *sha1_file_name(const unsigned char *sha1);
606 extern char *sha1_pack_name(const unsigned char *sha1);
607 extern char *sha1_pack_index_name(const unsigned char *sha1);
608 extern const char *find_unique_abbrev(const unsigned char *sha1, int);
609 extern const unsigned char null_sha1[20];
610 static inline int is_null_sha1(const unsigned char *sha1)
612 return !memcmp(sha1, null_sha1, 20);
614 static inline int hashcmp(const unsigned char *sha1, const unsigned char *sha2)
616 return memcmp(sha1, sha2, 20);
618 static inline void hashcpy(unsigned char *sha_dst, const unsigned char *sha_src)
620 memcpy(sha_dst, sha_src, 20);
622 static inline void hashclr(unsigned char *hash)
627 #define EMPTY_TREE_SHA1_HEX \
628 "4b825dc642cb6eb9a060e54bf8d69288fbee4904"
629 #define EMPTY_TREE_SHA1_BIN \
630 "\x4b\x82\x5d\xc6\x42\xcb\x6e\xb9\xa0\x60" \
631 "\xe5\x4b\xf8\xd6\x92\x88\xfb\xee\x49\x04"
633 int git_mkstemp(char *path, size_t n, const char *template);
635 int git_mkstemps(char *path, size_t n, const char *template, int suffix_len);
640 * PERM_UMASK, OLD_PERM_GROUP and OLD_PERM_EVERYBODY enumerations must
641 * not be changed. Old repositories have core.sharedrepository written in
642 * numeric format, and therefore these values are preserved for compatibility
648 OLD_PERM_EVERYBODY = 2,
650 PERM_EVERYBODY = 0664,
652 int git_config_perm(const char *var, const char *value);
653 int set_shared_perm(const char *path, int mode);
654 #define adjust_shared_perm(path) set_shared_perm((path), 0)
655 int safe_create_leading_directories(char *path);
656 int safe_create_leading_directories_const(const char *path);
657 extern char *expand_user_path(const char *path);
658 char *enter_repo(char *path, int strict);
659 static inline int is_absolute_path(const char *path)
661 return path[0] == '/' || has_dos_drive_prefix(path);
663 int is_directory(const char *);
664 const char *make_absolute_path(const char *path);
665 const char *make_nonrelative_path(const char *path);
666 const char *make_relative_path(const char *abs, const char *base);
667 int normalize_path_copy(char *dst, const char *src);
668 int longest_ancestor_length(const char *path, const char *prefix_list);
669 char *strip_path_suffix(const char *path, const char *suffix);
670 int daemon_avoid_alias(const char *path);
672 /* Read and unpack a sha1 file into memory, write memory to a sha1 file */
673 extern int sha1_object_info(const unsigned char *, unsigned long *);
674 extern void *read_sha1_file_repl(const unsigned char *sha1, enum object_type *type, unsigned long *size, const unsigned char **replacement);
675 static inline void *read_sha1_file(const unsigned char *sha1, enum object_type *type, unsigned long *size)
677 return read_sha1_file_repl(sha1, type, size, NULL);
679 extern int hash_sha1_file(const void *buf, unsigned long len, const char *type, unsigned char *sha1);
680 extern int write_sha1_file(void *buf, unsigned long len, const char *type, unsigned char *return_sha1);
681 extern int pretend_sha1_file(void *, unsigned long, enum object_type, unsigned char *);
682 extern int force_object_loose(const unsigned char *sha1, time_t mtime);
684 /* global flag to enable extra checks when accessing packed objects */
685 extern int do_check_packed_object_crc;
687 extern int check_sha1_signature(const unsigned char *sha1, void *buf, unsigned long size, const char *type);
689 extern int move_temp_to_file(const char *tmpfile, const char *filename);
691 extern int has_sha1_pack(const unsigned char *sha1);
692 extern int has_sha1_file(const unsigned char *sha1);
693 extern int has_loose_object_nonlocal(const unsigned char *sha1);
695 extern int has_pack_index(const unsigned char *sha1);
697 extern const signed char hexval_table[256];
698 static inline unsigned int hexval(unsigned char c)
700 return hexval_table[c];
703 /* Convert to/from hex/sha1 representation */
704 #define MINIMUM_ABBREV 4
705 #define DEFAULT_ABBREV 7
707 extern int get_sha1(const char *str, unsigned char *sha1);
708 extern int get_sha1_with_mode_1(const char *str, unsigned char *sha1, unsigned *mode, int gently, const char *prefix);
709 static inline int get_sha1_with_mode(const char *str, unsigned char *sha1, unsigned *mode)
711 return get_sha1_with_mode_1(str, sha1, mode, 1, NULL);
713 extern int get_sha1_hex(const char *hex, unsigned char *sha1);
714 extern char *sha1_to_hex(const unsigned char *sha1); /* static buffer result! */
715 extern int read_ref(const char *filename, unsigned char *sha1);
716 extern const char *resolve_ref(const char *path, unsigned char *sha1, int, int *);
717 extern int dwim_ref(const char *str, int len, unsigned char *sha1, char **ref);
718 extern int dwim_log(const char *str, int len, unsigned char *sha1, char **ref);
719 extern int interpret_branch_name(const char *str, struct strbuf *);
720 extern int get_sha1_mb(const char *str, unsigned char *sha1);
722 extern int refname_match(const char *abbrev_name, const char *full_name, const char **rules);
723 extern const char *ref_rev_parse_rules[];
724 extern const char *ref_fetch_rules[];
726 extern int create_symref(const char *ref, const char *refs_heads_master, const char *logmsg);
727 extern int validate_headref(const char *ref);
729 extern int base_name_compare(const char *name1, int len1, int mode1, const char *name2, int len2, int mode2);
730 extern int df_name_compare(const char *name1, int len1, int mode1, const char *name2, int len2, int mode2);
731 extern int cache_name_compare(const char *name1, int len1, const char *name2, int len2);
733 extern void *read_object_with_reference(const unsigned char *sha1,
734 const char *required_type,
736 unsigned char *sha1_ret);
738 extern struct object *peel_to_type(const char *name, int namelen,
739 struct object *o, enum object_type);
751 const char *show_date(unsigned long time, int timezone, enum date_mode mode);
752 const char *show_date_relative(unsigned long time, int tz,
753 const struct timeval *now,
755 size_t timebuf_size);
756 int parse_date(const char *date, char *buf, int bufsize);
757 void datestamp(char *buf, int bufsize);
758 unsigned long approxidate(const char *);
759 unsigned long approxidate_relative(const char *date, const struct timeval *now);
760 enum date_mode parse_date_format(const char *format);
762 #define IDENT_WARN_ON_NO_NAME 1
763 #define IDENT_ERROR_ON_NO_NAME 2
764 #define IDENT_NO_DATE 4
765 extern const char *git_author_info(int);
766 extern const char *git_committer_info(int);
767 extern const char *fmt_ident(const char *name, const char *email, const char *date_str, int);
768 extern const char *fmt_name(const char *name, const char *email);
769 extern const char *git_editor(void);
770 extern const char *git_pager(void);
773 const char *base_dir;
781 extern int checkout_entry(struct cache_entry *ce, const struct checkout *state, char *topath);
784 char path[PATH_MAX + 1];
788 int prefix_len_stat_func;
791 extern int has_symlink_leading_path(const char *name, int len);
792 extern int threaded_has_symlink_leading_path(struct cache_def *, const char *, int);
793 extern int has_symlink_or_noent_leading_path(const char *name, int len);
794 extern int has_dirs_only_path(const char *name, int len, int prefix_len);
795 extern void schedule_dir_for_removal(const char *name, int len);
796 extern void remove_scheduled_dirs(void);
798 extern struct alternate_object_database {
799 struct alternate_object_database *next;
801 char base[FLEX_ARRAY]; /* more */
803 extern void prepare_alt_odb(void);
804 extern void add_to_alternates_file(const char *reference);
805 typedef int alt_odb_fn(struct alternate_object_database *, void *);
806 extern void foreach_alt_odb(alt_odb_fn, void*);
809 struct pack_window *next;
813 unsigned int last_used;
814 unsigned int inuse_cnt;
817 extern struct packed_git {
818 struct packed_git *next;
819 struct pack_window *windows;
821 const void *index_data;
823 uint32_t num_objects;
824 uint32_t num_bad_objects;
825 unsigned char *bad_object_sha1;
829 unsigned pack_local:1,
831 unsigned char sha1[20];
832 /* something like ".git/objects/pack/xxxxx.pack" */
833 char pack_name[FLEX_ARRAY]; /* more */
838 unsigned char sha1[20];
839 struct packed_git *p;
844 unsigned char old_sha1[20];
845 unsigned char new_sha1[20];
847 unsigned int force:1,
854 REF_STATUS_REJECT_NONFASTFORWARD,
855 REF_STATUS_REJECT_NODELETE,
857 REF_STATUS_REMOTE_REJECT,
858 REF_STATUS_EXPECTING_REPORT,
861 struct ref *peer_ref; /* when renaming */
862 char name[FLEX_ARRAY]; /* more */
865 #define REF_NORMAL (1u << 0)
866 #define REF_HEADS (1u << 1)
867 #define REF_TAGS (1u << 2)
869 extern struct ref *find_ref_by_name(const struct ref *list, const char *name);
871 #define CONNECT_VERBOSE (1u << 0)
872 extern struct child_process *git_connect(int fd[2], const char *url, const char *prog, int flags);
873 extern int finish_connect(struct child_process *conn);
874 extern int path_match(const char *path, int nr, char **match);
875 struct extra_have_objects {
877 unsigned char (*array)[20];
879 extern struct ref **get_remote_heads(int in, struct ref **list, int nr_match, char **match, unsigned int flags, struct extra_have_objects *);
880 extern int server_supports(const char *feature);
882 extern struct packed_git *parse_pack_index(unsigned char *sha1);
884 extern void prepare_packed_git(void);
885 extern void reprepare_packed_git(void);
886 extern void install_packed_git(struct packed_git *pack);
888 extern struct packed_git *find_sha1_pack(const unsigned char *sha1,
889 struct packed_git *packs);
891 extern void pack_report(void);
892 extern int open_pack_index(struct packed_git *);
893 extern unsigned char *use_pack(struct packed_git *, struct pack_window **, off_t, unsigned int *);
894 extern void close_pack_windows(struct packed_git *);
895 extern void unuse_pack(struct pack_window **);
896 extern void free_pack_by_name(const char *);
897 extern void clear_delta_base_cache(void);
898 extern struct packed_git *add_packed_git(const char *, int, int);
899 extern const unsigned char *nth_packed_object_sha1(struct packed_git *, uint32_t);
900 extern off_t nth_packed_object_offset(const struct packed_git *, uint32_t);
901 extern off_t find_pack_entry_one(const unsigned char *, struct packed_git *);
902 extern void *unpack_entry(struct packed_git *, off_t, enum object_type *, unsigned long *);
903 extern unsigned long unpack_object_header_buffer(const unsigned char *buf, unsigned long len, enum object_type *type, unsigned long *sizep);
904 extern unsigned long get_size_from_delta(struct packed_git *, struct pack_window **, off_t);
905 extern const char *packed_object_info_detail(struct packed_git *, off_t, unsigned long *, unsigned long *, unsigned int *, unsigned char *);
907 /* Dumb servers support */
908 extern int update_server_info(int);
910 typedef int (*config_fn_t)(const char *, const char *, void *);
911 extern int git_default_config(const char *, const char *, void *);
912 extern int git_config_from_file(config_fn_t fn, const char *, void *);
913 extern int git_config(config_fn_t fn, void *);
914 extern int git_parse_ulong(const char *, unsigned long *);
915 extern int git_config_int(const char *, const char *);
916 extern unsigned long git_config_ulong(const char *, const char *);
917 extern int git_config_bool_or_int(const char *, const char *, int *);
918 extern int git_config_bool(const char *, const char *);
919 extern int git_config_string(const char **, const char *, const char *);
920 extern int git_config_pathname(const char **, const char *, const char *);
921 extern int git_config_set(const char *, const char *);
922 extern int git_config_set_multivar(const char *, const char *, const char *, int);
923 extern int git_config_rename_section(const char *, const char *);
924 extern const char *git_etc_gitconfig(void);
925 extern int check_repository_format_version(const char *var, const char *value, void *cb);
926 extern int git_config_system(void);
927 extern int git_config_global(void);
928 extern int config_error_nonbool(const char *);
929 extern const char *config_exclusive_filename;
931 #define MAX_GITNAME (1000)
932 extern char git_default_email[MAX_GITNAME];
933 extern char git_default_name[MAX_GITNAME];
934 #define IDENT_NAME_GIVEN 01
935 #define IDENT_MAIL_GIVEN 02
936 #define IDENT_ALL_GIVEN (IDENT_NAME_GIVEN|IDENT_MAIL_GIVEN)
937 extern int user_ident_explicitly_given;
938 extern int user_ident_sufficiently_given(void);
940 extern const char *git_commit_encoding;
941 extern const char *git_log_output_encoding;
942 extern const char *git_mailmap_file;
944 /* IO helper functions */
945 extern void maybe_flush_or_die(FILE *, const char *);
946 extern int copy_fd(int ifd, int ofd);
947 extern int copy_file(const char *dst, const char *src, int mode);
948 extern int copy_file_with_time(const char *dst, const char *src, int mode);
949 extern void write_or_die(int fd, const void *buf, size_t count);
950 extern int write_or_whine(int fd, const void *buf, size_t count, const char *msg);
951 extern int write_or_whine_pipe(int fd, const void *buf, size_t count, const char *msg);
952 extern void fsync_or_die(int fd, const char *);
954 extern ssize_t read_in_full(int fd, void *buf, size_t count);
955 extern ssize_t write_in_full(int fd, const void *buf, size_t count);
956 static inline ssize_t write_str_in_full(int fd, const char *str)
958 return write_in_full(fd, str, strlen(str));
962 extern void setup_pager(void);
963 extern const char *pager_program;
964 extern int pager_in_use(void);
965 extern int pager_use_color;
967 extern const char *editor_program;
968 extern const char *excludes_file;
971 int decode_85(char *dst, const char *line, int linelen);
972 void encode_85(char *buf, const unsigned char *data, int bytes);
975 extern void *alloc_blob_node(void);
976 extern void *alloc_tree_node(void);
977 extern void *alloc_commit_node(void);
978 extern void *alloc_tag_node(void);
979 extern void *alloc_object_node(void);
980 extern void alloc_report(void);
983 __attribute__((format (printf, 1, 2)))
984 extern void trace_printf(const char *format, ...);
985 __attribute__((format (printf, 2, 3)))
986 extern void trace_argv_printf(const char **argv, const char *format, ...);
989 /* returns 1 if *dst was used */
990 extern int convert_to_git(const char *path, const char *src, size_t len,
991 struct strbuf *dst, enum safe_crlf checksafe);
992 extern int convert_to_working_tree(const char *path, const char *src, size_t len, struct strbuf *dst);
996 * return 0 if success, 1 - if addition of a file failed and
997 * ADD_FILES_IGNORE_ERRORS was specified in flags
999 int add_files_to_cache(const char *prefix, const char **pathspec, int flags);
1002 extern int diff_auto_refresh_index;
1005 void shift_tree(const unsigned char *, const unsigned char *, unsigned char *, int);
1009 * used by both diff and apply
1011 #define WS_BLANK_AT_EOL 01
1012 #define WS_SPACE_BEFORE_TAB 02
1013 #define WS_INDENT_WITH_NON_TAB 04
1014 #define WS_CR_AT_EOL 010
1015 #define WS_BLANK_AT_EOF 020
1016 #define WS_TRAILING_SPACE (WS_BLANK_AT_EOL|WS_BLANK_AT_EOF)
1017 #define WS_DEFAULT_RULE (WS_TRAILING_SPACE|WS_SPACE_BEFORE_TAB)
1018 extern unsigned whitespace_rule_cfg;
1019 extern unsigned whitespace_rule(const char *);
1020 extern unsigned parse_whitespace_rule(const char *);
1021 extern unsigned ws_check(const char *line, int len, unsigned ws_rule);
1022 extern void ws_check_emit(const char *line, int len, unsigned ws_rule, FILE *stream, const char *set, const char *reset, const char *ws);
1023 extern char *whitespace_error_string(unsigned ws);
1024 extern int ws_fix_copy(char *, const char *, int, unsigned, int *);
1025 extern int ws_blank_line(const char *line, int len, unsigned ws_rule);
1028 int report_path_error(const char *ps_matched, const char **pathspec, int prefix_offset);
1029 void overlay_tree_on_cache(const char *tree_name, const char *prefix);
1031 char *alias_lookup(const char *alias);
1032 int split_cmdline(char *cmdline, const char ***argv);
1034 #endif /* CACHE_H */