4 #include "git-compat-util.h"
12 #define git_SHA_CTX SHA_CTX
13 #define git_SHA1_Init SHA1_Init
14 #define git_SHA1_Update SHA1_Update
15 #define git_SHA1_Final SHA1_Final
19 #if defined(NO_DEFLATE_BOUND) || ZLIB_VERNUM < 0x1200
20 #define deflateBound(c,s) ((s) + (((s) + 7) >> 3) + (((s) + 63) >> 6) + 11)
23 void git_inflate_init(z_streamp strm
);
24 void git_inflate_end(z_streamp strm
);
25 int git_inflate(z_streamp strm
, int flush
);
27 #if defined(DT_UNKNOWN) && !defined(NO_D_TYPE_IN_DIRENT)
28 #define DTYPE(de) ((de)->d_type)
38 #define DTYPE(de) DT_UNKNOWN
41 /* unknown mode (impossible combination S_IFIFO|S_IFCHR) */
42 #define S_IFINVALID 0030000
45 * A "directory link" is a link to another git directory.
47 * The value 0160000 is not normally a valid mode, and
48 * also just happens to be S_IFDIR + S_IFLNK
50 * NOTE! We *really* shouldn't depend on the S_IFxxx macros
51 * always having the same values everywhere. We should use
52 * our internal git values for these things, and then we can
53 * translate that to the OS-specific value. It just so
54 * happens that everybody shares the same bit representation
55 * in the UNIX world (and apparently wider too..)
57 #define S_IFGITLINK 0160000
58 #define S_ISGITLINK(m) (((m) & S_IFMT) == S_IFGITLINK)
61 * Intensive research over the course of many years has shown that
62 * port 9418 is totally unused by anything else. Or
64 * Your search - "port 9418" - did not match any documents.
66 * as www.google.com puts it.
68 * This port has been properly assigned for git use by IANA:
69 * git (Assigned-9418) [I06-050728-0001].
71 * git 9418/tcp git pack transfer service
72 * git 9418/udp git pack transfer service
74 * with Linus Torvalds <torvalds@osdl.org> as the point of
75 * contact. September 2005.
77 * See http://www.iana.org/assignments/port-numbers
79 #define DEFAULT_GIT_PORT 9418
82 * Basic data structures for the directory cache
85 #define CACHE_SIGNATURE 0x44495243 /* "DIRC" */
87 unsigned int hdr_signature
;
88 unsigned int hdr_version
;
89 unsigned int hdr_entries
;
93 * The "cache_time" is just the low 32 bits of the
94 * time. It doesn't matter if it overflows - we only
95 * check it for equality in the 32 bits we save.
103 * dev/ino/uid/gid/size are also just tracked to the low 32 bits
104 * Again - this is just a (very strong in practice) heuristic that
105 * the inode hasn't changed.
107 * We save the fields in big-endian order to allow using the
108 * index file over NFS transparently.
110 struct ondisk_cache_entry
{
111 struct cache_time ctime
;
112 struct cache_time mtime
;
119 unsigned char sha1
[20];
120 unsigned short flags
;
121 char name
[FLEX_ARRAY
]; /* more */
125 * This struct is used when CE_EXTENDED bit is 1
126 * The struct must match ondisk_cache_entry exactly from
129 struct ondisk_cache_entry_extended
{
130 struct cache_time ctime
;
131 struct cache_time mtime
;
138 unsigned char sha1
[20];
139 unsigned short flags
;
140 unsigned short flags2
;
141 char name
[FLEX_ARRAY
]; /* more */
145 struct cache_time ce_ctime
;
146 struct cache_time ce_mtime
;
149 unsigned int ce_mode
;
152 unsigned int ce_size
;
153 unsigned int ce_flags
;
154 unsigned char sha1
[20];
155 struct cache_entry
*next
;
156 char name
[FLEX_ARRAY
]; /* more */
159 #define CE_NAMEMASK (0x0fff)
160 #define CE_STAGEMASK (0x3000)
161 #define CE_EXTENDED (0x4000)
162 #define CE_VALID (0x8000)
163 #define CE_STAGESHIFT 12
166 * Range 0xFFFF0000 in ce_flags is divided into
167 * two parts: in-memory flags and on-disk ones.
168 * Flags in CE_EXTENDED_FLAGS will get saved on-disk
169 * if you want to save a new flag, add it in
172 * In-memory only flags
174 #define CE_UPDATE (1 << 16)
175 #define CE_REMOVE (1 << 17)
176 #define CE_UPTODATE (1 << 18)
177 #define CE_ADDED (1 << 19)
179 #define CE_HASHED (1 << 20)
180 #define CE_UNHASHED (1 << 21)
181 #define CE_WT_REMOVE (1 << 22) /* remove in work directory */
182 #define CE_CONFLICTED (1 << 23)
184 #define CE_UNPACKED (1 << 24)
185 #define CE_NEW_SKIP_WORKTREE (1 << 25)
188 * Extended on-disk flags
190 #define CE_INTENT_TO_ADD (1 << 29)
191 #define CE_SKIP_WORKTREE (1 << 30)
192 /* CE_EXTENDED2 is for future extension */
193 #define CE_EXTENDED2 (1 << 31)
195 #define CE_EXTENDED_FLAGS (CE_INTENT_TO_ADD | CE_SKIP_WORKTREE)
198 * Safeguard to avoid saving wrong flags:
199 * - CE_EXTENDED2 won't get saved until its semantic is known
200 * - Bits in 0x0000FFFF have been saved in ce_flags already
201 * - Bits in 0x003F0000 are currently in-memory flags
203 #if CE_EXTENDED_FLAGS & 0x803FFFFF
204 #error "CE_EXTENDED_FLAGS out of range"
208 * Copy the sha1 and stat state of a cache entry from one to
209 * another. But we never change the name, or the hash state!
211 #define CE_STATE_MASK (CE_HASHED | CE_UNHASHED)
212 static inline void copy_cache_entry(struct cache_entry
*dst
, struct cache_entry
*src
)
214 unsigned int state
= dst
->ce_flags
& CE_STATE_MASK
;
216 /* Don't copy hash chain and name */
217 memcpy(dst
, src
, offsetof(struct cache_entry
, next
));
219 /* Restore the hash state */
220 dst
->ce_flags
= (dst
->ce_flags
& ~CE_STATE_MASK
) | state
;
223 static inline unsigned create_ce_flags(size_t len
, unsigned stage
)
225 if (len
>= CE_NAMEMASK
)
227 return (len
| (stage
<< CE_STAGESHIFT
));
230 static inline size_t ce_namelen(const struct cache_entry
*ce
)
232 size_t len
= ce
->ce_flags
& CE_NAMEMASK
;
233 if (len
< CE_NAMEMASK
)
235 return strlen(ce
->name
+ CE_NAMEMASK
) + CE_NAMEMASK
;
238 #define ce_size(ce) cache_entry_size(ce_namelen(ce))
239 #define ondisk_ce_size(ce) (((ce)->ce_flags & CE_EXTENDED) ? \
240 ondisk_cache_entry_extended_size(ce_namelen(ce)) : \
241 ondisk_cache_entry_size(ce_namelen(ce)))
242 #define ce_stage(ce) ((CE_STAGEMASK & (ce)->ce_flags) >> CE_STAGESHIFT)
243 #define ce_uptodate(ce) ((ce)->ce_flags & CE_UPTODATE)
244 #define ce_skip_worktree(ce) ((ce)->ce_flags & CE_SKIP_WORKTREE)
245 #define ce_mark_uptodate(ce) ((ce)->ce_flags |= CE_UPTODATE)
247 #define ce_permissions(mode) (((mode) & 0100) ? 0755 : 0644)
248 static inline unsigned int create_ce_mode(unsigned int mode
)
252 if (S_ISDIR(mode
) || S_ISGITLINK(mode
))
254 return S_IFREG
| ce_permissions(mode
);
256 static inline unsigned int ce_mode_from_stat(struct cache_entry
*ce
, unsigned int mode
)
258 extern int trust_executable_bit
, has_symlinks
;
259 if (!has_symlinks
&& S_ISREG(mode
) &&
260 ce
&& S_ISLNK(ce
->ce_mode
))
262 if (!trust_executable_bit
&& S_ISREG(mode
)) {
263 if (ce
&& S_ISREG(ce
->ce_mode
))
265 return create_ce_mode(0666);
267 return create_ce_mode(mode
);
269 static inline int ce_to_dtype(const struct cache_entry
*ce
)
271 unsigned ce_mode
= ntohl(ce
->ce_mode
);
272 if (S_ISREG(ce_mode
))
274 else if (S_ISDIR(ce_mode
) || S_ISGITLINK(ce_mode
))
276 else if (S_ISLNK(ce_mode
))
281 static inline unsigned int canon_mode(unsigned int mode
)
284 return S_IFREG
| ce_permissions(mode
);
292 #define flexible_size(STRUCT,len) ((offsetof(struct STRUCT,name) + (len) + 8) & ~7)
293 #define cache_entry_size(len) flexible_size(cache_entry,len)
294 #define ondisk_cache_entry_size(len) flexible_size(ondisk_cache_entry,len)
295 #define ondisk_cache_entry_extended_size(len) flexible_size(ondisk_cache_entry_extended,len)
298 struct cache_entry
**cache
;
299 unsigned int cache_nr
, cache_alloc
, cache_changed
;
300 struct string_list
*resolve_undo
;
301 struct cache_tree
*cache_tree
;
302 struct cache_time timestamp
;
304 unsigned name_hash_initialized
: 1,
306 struct hash_table name_hash
;
309 extern struct index_state the_index
;
312 extern void add_name_hash(struct index_state
*istate
, struct cache_entry
*ce
);
314 * We don't actually *remove* it, we can just mark it invalid so that
315 * we won't find it in lookups.
317 * Not only would we have to search the lists (simple enough), but
318 * we'd also have to rehash other hash buckets in case this makes the
319 * hash bucket empty (common). So it's much better to just mark
322 static inline void remove_name_hash(struct cache_entry
*ce
)
324 ce
->ce_flags
|= CE_UNHASHED
;
328 #ifndef NO_THE_INDEX_COMPATIBILITY_MACROS
329 #define active_cache (the_index.cache)
330 #define active_nr (the_index.cache_nr)
331 #define active_alloc (the_index.cache_alloc)
332 #define active_cache_changed (the_index.cache_changed)
333 #define active_cache_tree (the_index.cache_tree)
335 #define read_cache() read_index(&the_index)
336 #define read_cache_from(path) read_index_from(&the_index, (path))
337 #define read_cache_preload(pathspec) read_index_preload(&the_index, (pathspec))
338 #define is_cache_unborn() is_index_unborn(&the_index)
339 #define read_cache_unmerged() read_index_unmerged(&the_index)
340 #define write_cache(newfd, cache, entries) write_index(&the_index, (newfd))
341 #define discard_cache() discard_index(&the_index)
342 #define unmerged_cache() unmerged_index(&the_index)
343 #define cache_name_pos(name, namelen) index_name_pos(&the_index,(name),(namelen))
344 #define add_cache_entry(ce, option) add_index_entry(&the_index, (ce), (option))
345 #define rename_cache_entry_at(pos, new_name) rename_index_entry_at(&the_index, (pos), (new_name))
346 #define remove_cache_entry_at(pos) remove_index_entry_at(&the_index, (pos))
347 #define remove_file_from_cache(path) remove_file_from_index(&the_index, (path))
348 #define add_to_cache(path, st, flags) add_to_index(&the_index, (path), (st), (flags))
349 #define add_file_to_cache(path, flags) add_file_to_index(&the_index, (path), (flags))
350 #define refresh_cache(flags) refresh_index(&the_index, (flags), NULL, NULL, NULL)
351 #define ce_match_stat(ce, st, options) ie_match_stat(&the_index, (ce), (st), (options))
352 #define ce_modified(ce, st, options) ie_modified(&the_index, (ce), (st), (options))
353 #define cache_name_exists(name, namelen, igncase) index_name_exists(&the_index, (name), (namelen), (igncase))
354 #define cache_name_is_other(name, namelen) index_name_is_other(&the_index, (name), (namelen))
355 #define resolve_undo_clear() resolve_undo_clear_index(&the_index)
356 #define unmerge_cache_entry_at(at) unmerge_index_entry_at(&the_index, at)
357 #define unmerge_cache(pathspec) unmerge_index(&the_index, pathspec)
367 /* 5 for future expansion */
374 static inline enum object_type
object_type(unsigned int mode
)
376 return S_ISDIR(mode
) ? OBJ_TREE
:
377 S_ISGITLINK(mode
) ? OBJ_COMMIT
:
381 #define GIT_DIR_ENVIRONMENT "GIT_DIR"
382 #define GIT_WORK_TREE_ENVIRONMENT "GIT_WORK_TREE"
383 #define DEFAULT_GIT_DIR_ENVIRONMENT ".git"
384 #define DB_ENVIRONMENT "GIT_OBJECT_DIRECTORY"
385 #define INDEX_ENVIRONMENT "GIT_INDEX_FILE"
386 #define GRAFT_ENVIRONMENT "GIT_GRAFT_FILE"
387 #define TEMPLATE_DIR_ENVIRONMENT "GIT_TEMPLATE_DIR"
388 #define CONFIG_ENVIRONMENT "GIT_CONFIG"
389 #define CONFIG_DATA_ENVIRONMENT "GIT_CONFIG_PARAMETERS"
390 #define EXEC_PATH_ENVIRONMENT "GIT_EXEC_PATH"
391 #define CEILING_DIRECTORIES_ENVIRONMENT "GIT_CEILING_DIRECTORIES"
392 #define NO_REPLACE_OBJECTS_ENVIRONMENT "GIT_NO_REPLACE_OBJECTS"
393 #define GITATTRIBUTES_FILE ".gitattributes"
394 #define INFOATTRIBUTES_FILE "info/attributes"
395 #define ATTRIBUTE_MACRO_PREFIX "[attr]"
396 #define GIT_NOTES_REF_ENVIRONMENT "GIT_NOTES_REF"
397 #define GIT_NOTES_DEFAULT_REF "refs/notes/commits"
398 #define GIT_NOTES_DISPLAY_REF_ENVIRONMENT "GIT_NOTES_DISPLAY_REF"
399 #define GIT_NOTES_REWRITE_REF_ENVIRONMENT "GIT_NOTES_REWRITE_REF"
400 #define GIT_NOTES_REWRITE_MODE_ENVIRONMENT "GIT_NOTES_REWRITE_MODE"
403 * Repository-local GIT_* environment variables
404 * The array is NULL-terminated to simplify its usage in contexts such
405 * environment creation or simple walk of the list.
406 * The number of non-NULL entries is available as a macro.
408 #define LOCAL_REPO_ENV_SIZE 9
409 extern const char *const local_repo_env
[LOCAL_REPO_ENV_SIZE
+ 1];
411 extern int is_bare_repository_cfg
;
412 extern int is_bare_repository(void);
413 extern int is_inside_git_dir(void);
414 extern char *git_work_tree_cfg
;
415 extern int is_inside_work_tree(void);
416 extern int have_git_dir(void);
417 extern const char *get_git_dir(void);
418 extern char *get_object_directory(void);
419 extern char *get_index_file(void);
420 extern char *get_graft_file(void);
421 extern int set_git_dir(const char *path
);
422 extern const char *get_git_work_tree(void);
423 extern const char *read_gitfile_gently(const char *path
);
424 extern void set_git_work_tree(const char *tree
);
426 #define ALTERNATE_DB_ENVIRONMENT "GIT_ALTERNATE_OBJECT_DIRECTORIES"
428 extern const char **get_pathspec(const char *prefix
, const char **pathspec
);
429 extern void setup_work_tree(void);
430 extern const char *setup_git_directory_gently(int *);
431 extern const char *setup_git_directory(void);
432 extern char *prefix_path(const char *prefix
, int len
, const char *path
);
433 extern const char *prefix_filename(const char *prefix
, int len
, const char *path
);
434 extern int check_filename(const char *prefix
, const char *name
);
435 extern void verify_filename(const char *prefix
, const char *name
);
436 extern void verify_non_filename(const char *prefix
, const char *name
);
438 #define INIT_DB_QUIET 0x0001
440 extern int set_git_dir_init(const char *git_dir
, const char *real_git_dir
, int);
441 extern int init_db(const char *template_dir
, unsigned int flags
);
443 #define alloc_nr(x) (((x)+16)*3/2)
446 * Realloc the buffer pointed at by variable 'x' so that it can hold
447 * at least 'nr' entries; the number of entries currently allocated
448 * is 'alloc', using the standard growing factor alloc_nr() macro.
450 * DO NOT USE any expression with side-effect for 'x', 'nr', or 'alloc'.
452 #define ALLOC_GROW(x, nr, alloc) \
454 if ((nr) > alloc) { \
455 if (alloc_nr(alloc) < (nr)) \
458 alloc = alloc_nr(alloc); \
459 x = xrealloc((x), alloc * sizeof(*(x))); \
463 /* Initialize and use the cache information */
464 extern int read_index(struct index_state
*);
465 extern int read_index_preload(struct index_state
*, const char **pathspec
);
466 extern int read_index_from(struct index_state
*, const char *path
);
467 extern int is_index_unborn(struct index_state
*);
468 extern int read_index_unmerged(struct index_state
*);
469 extern int write_index(struct index_state
*, int newfd
);
470 extern int discard_index(struct index_state
*);
471 extern int unmerged_index(const struct index_state
*);
472 extern int verify_path(const char *path
);
473 extern struct cache_entry
*index_name_exists(struct index_state
*istate
, const char *name
, int namelen
, int igncase
);
474 extern int index_name_pos(const struct index_state
*, const char *name
, int namelen
);
475 #define ADD_CACHE_OK_TO_ADD 1 /* Ok to add */
476 #define ADD_CACHE_OK_TO_REPLACE 2 /* Ok to replace file/directory */
477 #define ADD_CACHE_SKIP_DFCHECK 4 /* Ok to skip DF conflict checks */
478 #define ADD_CACHE_JUST_APPEND 8 /* Append only; tree.c::read_tree() */
479 #define ADD_CACHE_NEW_ONLY 16 /* Do not replace existing ones */
480 extern int add_index_entry(struct index_state
*, struct cache_entry
*ce
, int option
);
481 extern void rename_index_entry_at(struct index_state
*, int pos
, const char *new_name
);
482 extern int remove_index_entry_at(struct index_state
*, int pos
);
483 extern void remove_marked_cache_entries(struct index_state
*istate
);
484 extern int remove_file_from_index(struct index_state
*, const char *path
);
485 #define ADD_CACHE_VERBOSE 1
486 #define ADD_CACHE_PRETEND 2
487 #define ADD_CACHE_IGNORE_ERRORS 4
488 #define ADD_CACHE_IGNORE_REMOVAL 8
489 #define ADD_CACHE_INTENT 16
490 extern int add_to_index(struct index_state
*, const char *path
, struct stat
*, int flags
);
491 extern int add_file_to_index(struct index_state
*, const char *path
, int flags
);
492 extern struct cache_entry
*make_cache_entry(unsigned int mode
, const unsigned char *sha1
, const char *path
, int stage
, int refresh
);
493 extern int ce_same_name(struct cache_entry
*a
, struct cache_entry
*b
);
494 extern int index_name_is_other(const struct index_state
*, const char *, int);
496 /* do stat comparison even if CE_VALID is true */
497 #define CE_MATCH_IGNORE_VALID 01
498 /* do not check the contents but report dirty on racily-clean entries */
499 #define CE_MATCH_RACY_IS_DIRTY 02
500 /* do stat comparison even if CE_SKIP_WORKTREE is true */
501 #define CE_MATCH_IGNORE_SKIP_WORKTREE 04
502 extern int ie_match_stat(const struct index_state
*, struct cache_entry
*, struct stat
*, unsigned int);
503 extern int ie_modified(const struct index_state
*, struct cache_entry
*, struct stat
*, unsigned int);
506 const char **raw
; /* get_pathspec() result, not freed by free_pathspec() */
508 unsigned int has_wildcard
:1;
509 unsigned int recursive
:1;
511 struct pathspec_item
{
514 unsigned int use_wildcard
:1;
518 extern int init_pathspec(struct pathspec
*, const char **);
519 extern void free_pathspec(struct pathspec
*);
520 extern int ce_path_match(const struct cache_entry
*ce
, const struct pathspec
*pathspec
);
522 #define HASH_WRITE_OBJECT 1
523 #define HASH_FORMAT_CHECK 2
524 extern int index_fd(unsigned char *sha1
, int fd
, struct stat
*st
, enum object_type type
, const char *path
, unsigned flags
);
525 extern int index_path(unsigned char *sha1
, const char *path
, struct stat
*st
, unsigned flags
);
526 extern void fill_stat_cache_info(struct cache_entry
*ce
, struct stat
*st
);
528 #define REFRESH_REALLY 0x0001 /* ignore_valid */
529 #define REFRESH_UNMERGED 0x0002 /* allow unmerged */
530 #define REFRESH_QUIET 0x0004 /* be quiet about it */
531 #define REFRESH_IGNORE_MISSING 0x0008 /* ignore non-existent */
532 #define REFRESH_IGNORE_SUBMODULES 0x0010 /* ignore submodules */
533 #define REFRESH_IN_PORCELAIN 0x0020 /* user friendly output, not "needs update" */
534 extern int refresh_index(struct index_state
*, unsigned int flags
, const char **pathspec
, char *seen
, const char *header_msg
);
537 struct lock_file
*next
;
541 char filename
[PATH_MAX
];
543 #define LOCK_DIE_ON_ERROR 1
544 #define LOCK_NODEREF 2
545 extern int unable_to_lock_error(const char *path
, int err
);
546 extern NORETURN
void unable_to_lock_index_die(const char *path
, int err
);
547 extern int hold_lock_file_for_update(struct lock_file
*, const char *path
, int);
548 extern int hold_lock_file_for_append(struct lock_file
*, const char *path
, int);
549 extern int commit_lock_file(struct lock_file
*);
550 extern void update_index_if_able(struct index_state
*, struct lock_file
*);
552 extern int hold_locked_index(struct lock_file
*, int);
553 extern int commit_locked_index(struct lock_file
*);
554 extern void set_alternate_index_output(const char *);
555 extern int close_lock_file(struct lock_file
*);
556 extern void rollback_lock_file(struct lock_file
*);
557 extern int delete_ref(const char *, const unsigned char *sha1
, int delopt
);
559 /* Environment bits from configuration mechanism */
560 extern int trust_executable_bit
;
561 extern int trust_ctime
;
562 extern int quote_path_fully
;
563 extern int has_symlinks
;
564 extern int minimum_abbrev
, default_abbrev
;
565 extern int ignore_case
;
566 extern int assume_unchanged
;
567 extern int prefer_symlink_refs
;
568 extern int log_all_ref_updates
;
569 extern int warn_ambiguous_refs
;
570 extern int shared_repository
;
571 extern const char *apply_default_whitespace
;
572 extern const char *apply_default_ignorewhitespace
;
573 extern int zlib_compression_level
;
574 extern int core_compression_level
;
575 extern int core_compression_seen
;
576 extern size_t packed_git_window_size
;
577 extern size_t packed_git_limit
;
578 extern size_t delta_base_cache_limit
;
579 extern unsigned long big_file_threshold
;
580 extern int read_replace_refs
;
581 extern int fsync_object_files
;
582 extern int core_preload_index
;
583 extern int core_apply_sparse_checkout
;
591 extern enum safe_crlf safe_crlf
;
599 extern enum auto_crlf auto_crlf
;
606 EOL_NATIVE
= EOL_CRLF
612 extern enum eol core_eol
;
615 BRANCH_TRACK_UNSPECIFIED
= -1,
616 BRANCH_TRACK_NEVER
= 0,
619 BRANCH_TRACK_EXPLICIT
,
620 BRANCH_TRACK_OVERRIDE
623 enum rebase_setup_type
{
624 AUTOREBASE_NEVER
= 0,
630 enum push_default_type
{
631 PUSH_DEFAULT_NOTHING
= 0,
632 PUSH_DEFAULT_MATCHING
,
633 PUSH_DEFAULT_UPSTREAM
,
637 extern enum branch_track git_branch_track
;
638 extern enum rebase_setup_type autorebase
;
639 extern enum push_default_type push_default
;
641 enum object_creation_mode
{
642 OBJECT_CREATION_USES_HARDLINKS
= 0,
643 OBJECT_CREATION_USES_RENAMES
= 1
646 extern enum object_creation_mode object_creation_mode
;
648 extern char *notes_ref_name
;
650 extern int grafts_replace_parents
;
652 #define GIT_REPO_VERSION 0
653 extern int repository_format_version
;
654 extern int check_repository_format(void);
656 #define MTIME_CHANGED 0x0001
657 #define CTIME_CHANGED 0x0002
658 #define OWNER_CHANGED 0x0004
659 #define MODE_CHANGED 0x0008
660 #define INODE_CHANGED 0x0010
661 #define DATA_CHANGED 0x0020
662 #define TYPE_CHANGED 0x0040
664 extern char *mksnpath(char *buf
, size_t n
, const char *fmt
, ...)
665 __attribute__((format (printf
, 3, 4)));
666 extern char *git_snpath(char *buf
, size_t n
, const char *fmt
, ...)
667 __attribute__((format (printf
, 3, 4)));
668 extern char *git_pathdup(const char *fmt
, ...)
669 __attribute__((format (printf
, 1, 2)));
671 /* Return a statically allocated filename matching the sha1 signature */
672 extern char *mkpath(const char *fmt
, ...) __attribute__((format (printf
, 1, 2)));
673 extern char *git_path(const char *fmt
, ...) __attribute__((format (printf
, 1, 2)));
674 extern char *git_path_submodule(const char *path
, const char *fmt
, ...)
675 __attribute__((format (printf
, 2, 3)));
677 extern char *sha1_file_name(const unsigned char *sha1
);
678 extern char *sha1_pack_name(const unsigned char *sha1
);
679 extern char *sha1_pack_index_name(const unsigned char *sha1
);
680 extern const char *find_unique_abbrev(const unsigned char *sha1
, int);
681 extern const unsigned char null_sha1
[20];
683 static inline int hashcmp(const unsigned char *sha1
, const unsigned char *sha2
)
687 for (i
= 0; i
< 20; i
++, sha1
++, sha2
++) {
689 return *sha1
- *sha2
;
695 static inline int is_null_sha1(const unsigned char *sha1
)
697 return !hashcmp(sha1
, null_sha1
);
700 static inline void hashcpy(unsigned char *sha_dst
, const unsigned char *sha_src
)
702 memcpy(sha_dst
, sha_src
, 20);
704 static inline void hashclr(unsigned char *hash
)
709 #define EMPTY_TREE_SHA1_HEX \
710 "4b825dc642cb6eb9a060e54bf8d69288fbee4904"
711 #define EMPTY_TREE_SHA1_BIN_LITERAL \
712 "\x4b\x82\x5d\xc6\x42\xcb\x6e\xb9\xa0\x60" \
713 "\xe5\x4b\xf8\xd6\x92\x88\xfb\xee\x49\x04"
714 #define EMPTY_TREE_SHA1_BIN \
715 ((const unsigned char *) EMPTY_TREE_SHA1_BIN_LITERAL)
717 int git_mkstemp(char *path
, size_t n
, const char *template);
719 int git_mkstemps(char *path
, size_t n
, const char *template, int suffix_len
);
721 /* set default permissions by passing mode arguments to open(2) */
722 int git_mkstemps_mode(char *pattern
, int suffix_len
, int mode
);
723 int git_mkstemp_mode(char *pattern
, int mode
);
728 * PERM_UMASK, OLD_PERM_GROUP and OLD_PERM_EVERYBODY enumerations must
729 * not be changed. Old repositories have core.sharedrepository written in
730 * numeric format, and therefore these values are preserved for compatibility
736 OLD_PERM_EVERYBODY
= 2,
738 PERM_EVERYBODY
= 0664
740 int git_config_perm(const char *var
, const char *value
);
741 int set_shared_perm(const char *path
, int mode
);
742 #define adjust_shared_perm(path) set_shared_perm((path), 0)
743 int safe_create_leading_directories(char *path
);
744 int safe_create_leading_directories_const(const char *path
);
745 int mkdir_in_gitdir(const char *path
);
746 extern char *expand_user_path(const char *path
);
747 char *enter_repo(char *path
, int strict
);
748 static inline int is_absolute_path(const char *path
)
750 return path
[0] == '/' || has_dos_drive_prefix(path
);
752 int is_directory(const char *);
753 const char *real_path(const char *path
);
754 const char *absolute_path(const char *path
);
755 const char *relative_path(const char *abs
, const char *base
);
756 int normalize_path_copy(char *dst
, const char *src
);
757 int longest_ancestor_length(const char *path
, const char *prefix_list
);
758 char *strip_path_suffix(const char *path
, const char *suffix
);
759 int daemon_avoid_alias(const char *path
);
760 int offset_1st_component(const char *path
);
762 /* object replacement */
763 #define READ_SHA1_FILE_REPLACE 1
764 extern void *read_sha1_file_extended(const unsigned char *sha1
, enum object_type
*type
, unsigned long *size
, unsigned flag
);
765 static inline void *read_sha1_file(const unsigned char *sha1
, enum object_type
*type
, unsigned long *size
)
767 return read_sha1_file_extended(sha1
, type
, size
, READ_SHA1_FILE_REPLACE
);
769 extern const unsigned char *do_lookup_replace_object(const unsigned char *sha1
);
770 static inline const unsigned char *lookup_replace_object(const unsigned char *sha1
)
772 if (!read_replace_refs
)
774 return do_lookup_replace_object(sha1
);
777 /* Read and unpack a sha1 file into memory, write memory to a sha1 file */
778 extern int sha1_object_info(const unsigned char *, unsigned long *);
779 extern int hash_sha1_file(const void *buf
, unsigned long len
, const char *type
, unsigned char *sha1
);
780 extern int write_sha1_file(const void *buf
, unsigned long len
, const char *type
, unsigned char *return_sha1
);
781 extern int pretend_sha1_file(void *, unsigned long, enum object_type
, unsigned char *);
782 extern int force_object_loose(const unsigned char *sha1
, time_t mtime
);
783 extern void *map_sha1_file(const unsigned char *sha1
, unsigned long *size
);
784 extern int unpack_sha1_header(z_stream
*stream
, unsigned char *map
, unsigned long mapsize
, void *buffer
, unsigned long bufsiz
);
785 extern int parse_sha1_header(const char *hdr
, unsigned long *sizep
);
787 /* global flag to enable extra checks when accessing packed objects */
788 extern int do_check_packed_object_crc
;
790 extern int check_sha1_signature(const unsigned char *sha1
, void *buf
, unsigned long size
, const char *type
);
792 extern int move_temp_to_file(const char *tmpfile
, const char *filename
);
794 extern int has_sha1_pack(const unsigned char *sha1
);
795 extern int has_sha1_file(const unsigned char *sha1
);
796 extern int has_loose_object_nonlocal(const unsigned char *sha1
);
798 extern int has_pack_index(const unsigned char *sha1
);
800 extern void assert_sha1_type(const unsigned char *sha1
, enum object_type expect
);
802 extern const signed char hexval_table
[256];
803 static inline unsigned int hexval(unsigned char c
)
805 return hexval_table
[c
];
808 /* Convert to/from hex/sha1 representation */
809 #define MINIMUM_ABBREV minimum_abbrev
810 #define DEFAULT_ABBREV default_abbrev
812 struct object_context
{
813 unsigned char tree
[20];
818 extern int get_sha1(const char *str
, unsigned char *sha1
);
819 extern int get_sha1_with_mode_1(const char *str
, unsigned char *sha1
, unsigned *mode
, int gently
, const char *prefix
);
820 static inline int get_sha1_with_mode(const char *str
, unsigned char *sha1
, unsigned *mode
)
822 return get_sha1_with_mode_1(str
, sha1
, mode
, 1, NULL
);
824 extern int get_sha1_with_context_1(const char *name
, unsigned char *sha1
, struct object_context
*orc
, int gently
, const char *prefix
);
825 static inline int get_sha1_with_context(const char *str
, unsigned char *sha1
, struct object_context
*orc
)
827 return get_sha1_with_context_1(str
, sha1
, orc
, 1, NULL
);
829 extern int get_sha1_hex(const char *hex
, unsigned char *sha1
);
830 extern char *sha1_to_hex(const unsigned char *sha1
); /* static buffer result! */
831 extern int read_ref(const char *filename
, unsigned char *sha1
);
832 extern const char *resolve_ref(const char *path
, unsigned char *sha1
, int, int *);
833 extern int dwim_ref(const char *str
, int len
, unsigned char *sha1
, char **ref
);
834 extern int dwim_log(const char *str
, int len
, unsigned char *sha1
, char **ref
);
835 extern int interpret_branch_name(const char *str
, struct strbuf
*);
836 extern int get_sha1_mb(const char *str
, unsigned char *sha1
);
838 extern int refname_match(const char *abbrev_name
, const char *full_name
, const char **rules
);
839 extern const char *ref_rev_parse_rules
[];
840 extern const char *ref_fetch_rules
[];
842 extern int create_symref(const char *ref
, const char *refs_heads_master
, const char *logmsg
);
843 extern int validate_headref(const char *ref
);
845 extern int base_name_compare(const char *name1
, int len1
, int mode1
, const char *name2
, int len2
, int mode2
);
846 extern int df_name_compare(const char *name1
, int len1
, int mode1
, const char *name2
, int len2
, int mode2
);
847 extern int cache_name_compare(const char *name1
, int len1
, const char *name2
, int len2
);
849 extern void *read_object_with_reference(const unsigned char *sha1
,
850 const char *required_type
,
852 unsigned char *sha1_ret
);
854 extern struct object
*peel_to_type(const char *name
, int namelen
,
855 struct object
*o
, enum object_type
);
867 const char *show_date(unsigned long time
, int timezone
, enum date_mode mode
);
868 const char *show_date_relative(unsigned long time
, int tz
,
869 const struct timeval
*now
,
871 size_t timebuf_size
);
872 int parse_date(const char *date
, char *buf
, int bufsize
);
873 int parse_date_basic(const char *date
, unsigned long *timestamp
, int *offset
);
874 void datestamp(char *buf
, int bufsize
);
875 #define approxidate(s) approxidate_careful((s), NULL)
876 unsigned long approxidate_careful(const char *, int *);
877 unsigned long approxidate_relative(const char *date
, const struct timeval
*now
);
878 enum date_mode
parse_date_format(const char *format
);
880 #define IDENT_WARN_ON_NO_NAME 1
881 #define IDENT_ERROR_ON_NO_NAME 2
882 #define IDENT_NO_DATE 4
883 extern const char *git_author_info(int);
884 extern const char *git_committer_info(int);
885 extern const char *fmt_ident(const char *name
, const char *email
, const char *date_str
, int);
886 extern const char *fmt_name(const char *name
, const char *email
);
887 extern const char *git_editor(void);
888 extern const char *git_pager(int stdout_is_tty
);
891 const char *base_dir
;
899 extern int checkout_entry(struct cache_entry
*ce
, const struct checkout
*state
, char *topath
);
902 char path
[PATH_MAX
+ 1];
906 int prefix_len_stat_func
;
909 extern int has_symlink_leading_path(const char *name
, int len
);
910 extern int threaded_has_symlink_leading_path(struct cache_def
*, const char *, int);
911 extern int check_leading_path(const char *name
, int len
);
912 extern int has_dirs_only_path(const char *name
, int len
, int prefix_len
);
913 extern void schedule_dir_for_removal(const char *name
, int len
);
914 extern void remove_scheduled_dirs(void);
916 extern struct alternate_object_database
{
917 struct alternate_object_database
*next
;
919 char base
[FLEX_ARRAY
]; /* more */
921 extern void prepare_alt_odb(void);
922 extern void add_to_alternates_file(const char *reference
);
923 typedef int alt_odb_fn(struct alternate_object_database
*, void *);
924 extern void foreach_alt_odb(alt_odb_fn
, void*);
927 struct pack_window
*next
;
931 unsigned int last_used
;
932 unsigned int inuse_cnt
;
935 extern struct packed_git
{
936 struct packed_git
*next
;
937 struct pack_window
*windows
;
939 const void *index_data
;
941 uint32_t num_objects
;
942 uint32_t num_bad_objects
;
943 unsigned char *bad_object_sha1
;
947 unsigned pack_local
:1,
950 unsigned char sha1
[20];
951 /* something like ".git/objects/pack/xxxxx.pack" */
952 char pack_name
[FLEX_ARRAY
]; /* more */
957 unsigned char sha1
[20];
958 struct packed_git
*p
;
963 unsigned char old_sha1
[20];
964 unsigned char new_sha1
[20];
966 unsigned int force
:1,
973 REF_STATUS_REJECT_NONFASTFORWARD
,
974 REF_STATUS_REJECT_NODELETE
,
976 REF_STATUS_REMOTE_REJECT
,
977 REF_STATUS_EXPECTING_REPORT
980 struct ref
*peer_ref
; /* when renaming */
981 char name
[FLEX_ARRAY
]; /* more */
984 #define REF_NORMAL (1u << 0)
985 #define REF_HEADS (1u << 1)
986 #define REF_TAGS (1u << 2)
988 extern struct ref
*find_ref_by_name(const struct ref
*list
, const char *name
);
990 #define CONNECT_VERBOSE (1u << 0)
991 extern char *git_getpass(const char *prompt
);
992 extern struct child_process
*git_connect(int fd
[2], const char *url
, const char *prog
, int flags
);
993 extern int finish_connect(struct child_process
*conn
);
994 extern int path_match(const char *path
, int nr
, char **match
);
995 struct extra_have_objects
{
997 unsigned char (*array
)[20];
999 extern struct ref
**get_remote_heads(int in
, struct ref
**list
, int nr_match
, char **match
, unsigned int flags
, struct extra_have_objects
*);
1000 extern int server_supports(const char *feature
);
1002 extern struct packed_git
*parse_pack_index(unsigned char *sha1
, const char *idx_path
);
1004 extern void prepare_packed_git(void);
1005 extern void reprepare_packed_git(void);
1006 extern void install_packed_git(struct packed_git
*pack
);
1008 extern struct packed_git
*find_sha1_pack(const unsigned char *sha1
,
1009 struct packed_git
*packs
);
1011 extern void pack_report(void);
1012 extern int open_pack_index(struct packed_git
*);
1013 extern void close_pack_index(struct packed_git
*);
1014 extern unsigned char *use_pack(struct packed_git
*, struct pack_window
**, off_t
, unsigned int *);
1015 extern void close_pack_windows(struct packed_git
*);
1016 extern void unuse_pack(struct pack_window
**);
1017 extern void free_pack_by_name(const char *);
1018 extern void clear_delta_base_cache(void);
1019 extern struct packed_git
*add_packed_git(const char *, int, int);
1020 extern const unsigned char *nth_packed_object_sha1(struct packed_git
*, uint32_t);
1021 extern off_t
nth_packed_object_offset(const struct packed_git
*, uint32_t);
1022 extern off_t
find_pack_entry_one(const unsigned char *, struct packed_git
*);
1023 extern void *unpack_entry(struct packed_git
*, off_t
, enum object_type
*, unsigned long *);
1024 extern unsigned long unpack_object_header_buffer(const unsigned char *buf
, unsigned long len
, enum object_type
*type
, unsigned long *sizep
);
1025 extern unsigned long get_size_from_delta(struct packed_git
*, struct pack_window
**, off_t
);
1026 extern int packed_object_info_detail(struct packed_git
*, off_t
, unsigned long *, unsigned long *, unsigned int *, unsigned char *);
1027 extern int unpack_object_header(struct packed_git
*, struct pack_window
**, off_t
*, unsigned long *);
1029 struct object_info
{
1031 unsigned long *sizep
;
1043 * ... Nothing to expose in this case
1046 * ... Nothing to expose in this case
1050 struct packed_git
*pack
;
1052 unsigned int is_delta
;
1056 extern int sha1_object_info_extended(const unsigned char *, struct object_info
*);
1058 /* Dumb servers support */
1059 extern int update_server_info(int);
1061 typedef int (*config_fn_t
)(const char *, const char *, void *);
1062 extern int git_default_config(const char *, const char *, void *);
1063 extern int git_config_from_file(config_fn_t fn
, const char *, void *);
1064 extern void git_config_push_parameter(const char *text
);
1065 extern int git_config_parse_parameter(const char *text
);
1066 extern int git_config_parse_environment(void);
1067 extern int git_config_from_parameters(config_fn_t fn
, void *data
);
1068 extern int git_config(config_fn_t fn
, void *);
1069 extern int git_config_early(config_fn_t fn
, void *, const char *repo_config
);
1070 extern int git_parse_ulong(const char *, unsigned long *);
1071 extern int git_config_int(const char *, const char *);
1072 extern unsigned long git_config_ulong(const char *, const char *);
1073 extern int git_config_bool_or_int(const char *, const char *, int *);
1074 extern int git_config_bool(const char *, const char *);
1075 extern int git_config_maybe_bool(const char *, const char *);
1076 extern int git_config_string(const char **, const char *, const char *);
1077 extern int git_config_pathname(const char **, const char *, const char *);
1078 extern int git_config_set(const char *, const char *);
1079 extern int git_config_parse_key(const char *, char **, int *);
1080 extern int git_config_set_multivar(const char *, const char *, const char *, int);
1081 extern int git_config_rename_section(const char *, const char *);
1082 extern const char *git_etc_gitconfig(void);
1083 extern int check_repository_format_version(const char *var
, const char *value
, void *cb
);
1084 extern int git_env_bool(const char *, int);
1085 extern int git_config_system(void);
1086 extern int config_error_nonbool(const char *);
1087 extern const char *get_log_output_encoding(void);
1088 extern const char *get_commit_output_encoding(void);
1090 extern const char *config_exclusive_filename
;
1092 #define MAX_GITNAME (1000)
1093 extern char git_default_email
[MAX_GITNAME
];
1094 extern char git_default_name
[MAX_GITNAME
];
1095 #define IDENT_NAME_GIVEN 01
1096 #define IDENT_MAIL_GIVEN 02
1097 #define IDENT_ALL_GIVEN (IDENT_NAME_GIVEN|IDENT_MAIL_GIVEN)
1098 extern int user_ident_explicitly_given
;
1099 extern int user_ident_sufficiently_given(void);
1101 extern const char *git_commit_encoding
;
1102 extern const char *git_log_output_encoding
;
1103 extern const char *git_mailmap_file
;
1105 /* IO helper functions */
1106 extern void maybe_flush_or_die(FILE *, const char *);
1107 extern int copy_fd(int ifd
, int ofd
);
1108 extern int copy_file(const char *dst
, const char *src
, int mode
);
1109 extern int copy_file_with_time(const char *dst
, const char *src
, int mode
);
1110 extern void write_or_die(int fd
, const void *buf
, size_t count
);
1111 extern int write_or_whine(int fd
, const void *buf
, size_t count
, const char *msg
);
1112 extern int write_or_whine_pipe(int fd
, const void *buf
, size_t count
, const char *msg
);
1113 extern void fsync_or_die(int fd
, const char *);
1115 extern ssize_t
read_in_full(int fd
, void *buf
, size_t count
);
1116 extern ssize_t
write_in_full(int fd
, const void *buf
, size_t count
);
1117 static inline ssize_t
write_str_in_full(int fd
, const char *str
)
1119 return write_in_full(fd
, str
, strlen(str
));
1123 extern void setup_pager(void);
1124 extern const char *pager_program
;
1125 extern int pager_in_use(void);
1126 extern int pager_use_color
;
1128 extern const char *editor_program
;
1129 extern const char *askpass_program
;
1130 extern const char *excludes_file
;
1133 int decode_85(char *dst
, const char *line
, int linelen
);
1134 void encode_85(char *buf
, const unsigned char *data
, int bytes
);
1137 extern void *alloc_blob_node(void);
1138 extern void *alloc_tree_node(void);
1139 extern void *alloc_commit_node(void);
1140 extern void *alloc_tag_node(void);
1141 extern void *alloc_object_node(void);
1142 extern void alloc_report(void);
1145 __attribute__((format (printf
, 1, 2)))
1146 extern void trace_printf(const char *format
, ...);
1147 extern void trace_vprintf(const char *key
, const char *format
, va_list ap
);
1148 __attribute__((format (printf
, 2, 3)))
1149 extern void trace_argv_printf(const char **argv
, const char *format
, ...);
1150 extern void trace_repo_setup(const char *prefix
);
1151 extern int trace_want(const char *key
);
1152 extern void trace_strbuf(const char *key
, const struct strbuf
*buf
);
1154 void packet_trace_identity(const char *prog
);
1157 /* returns 1 if *dst was used */
1158 extern int convert_to_git(const char *path
, const char *src
, size_t len
,
1159 struct strbuf
*dst
, enum safe_crlf checksafe
);
1160 extern int convert_to_working_tree(const char *path
, const char *src
, size_t len
, struct strbuf
*dst
);
1161 extern int renormalize_buffer(const char *path
, const char *src
, size_t len
, struct strbuf
*dst
);
1162 extern int can_bypass_conversion(const char *path
);
1166 * return 0 if success, 1 - if addition of a file failed and
1167 * ADD_FILES_IGNORE_ERRORS was specified in flags
1169 int add_files_to_cache(const char *prefix
, const char **pathspec
, int flags
);
1172 extern int diff_auto_refresh_index
;
1175 void shift_tree(const unsigned char *, const unsigned char *, unsigned char *, int);
1176 void shift_tree_by(const unsigned char *, const unsigned char *, unsigned char *, const char *);
1180 * used by both diff and apply
1181 * last two digits are tab width
1183 #define WS_BLANK_AT_EOL 0100
1184 #define WS_SPACE_BEFORE_TAB 0200
1185 #define WS_INDENT_WITH_NON_TAB 0400
1186 #define WS_CR_AT_EOL 01000
1187 #define WS_BLANK_AT_EOF 02000
1188 #define WS_TAB_IN_INDENT 04000
1189 #define WS_TRAILING_SPACE (WS_BLANK_AT_EOL|WS_BLANK_AT_EOF)
1190 #define WS_DEFAULT_RULE (WS_TRAILING_SPACE|WS_SPACE_BEFORE_TAB|8)
1191 #define WS_TAB_WIDTH_MASK 077
1192 extern unsigned whitespace_rule_cfg
;
1193 extern unsigned whitespace_rule(const char *);
1194 extern unsigned parse_whitespace_rule(const char *);
1195 extern unsigned ws_check(const char *line
, int len
, unsigned ws_rule
);
1196 extern void ws_check_emit(const char *line
, int len
, unsigned ws_rule
, FILE *stream
, const char *set
, const char *reset
, const char *ws
);
1197 extern char *whitespace_error_string(unsigned ws
);
1198 extern void ws_fix_copy(struct strbuf
*, const char *, int, unsigned, int *);
1199 extern int ws_blank_line(const char *line
, int len
, unsigned ws_rule
);
1200 #define ws_tab_width(rule) ((rule) & WS_TAB_WIDTH_MASK)
1203 int report_path_error(const char *ps_matched
, const char **pathspec
, int prefix_offset
);
1204 void overlay_tree_on_cache(const char *tree_name
, const char *prefix
);
1206 char *alias_lookup(const char *alias
);
1207 int split_cmdline(char *cmdline
, const char ***argv
);
1208 /* Takes a negative value returned by split_cmdline */
1209 const char *split_cmdline_strerror(int cmdline_errno
);
1212 struct startup_info
{
1213 int have_repository
;
1216 extern struct startup_info
*startup_info
;
1218 /* builtin/merge.c */
1219 int checkout_fast_forward(const unsigned char *from
, const unsigned char *to
);
1221 #endif /* CACHE_H */