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 (1 << 16)
174 #define CE_REMOVE (1 << 17)
175 #define CE_UPTODATE (1 << 18)
176 #define CE_ADDED (1 << 19)
178 #define CE_HASHED (1 << 20)
179 #define CE_UNHASHED (1 << 21)
180 #define CE_WT_REMOVE (1 << 22) /* remove in work directory */
181 #define CE_CONFLICTED (1 << 23)
183 #define CE_UNPACKED (1 << 24)
184 #define CE_NEW_SKIP_WORKTREE (1 << 25)
187 * Extended on-disk flags
189 #define CE_INTENT_TO_ADD (1 << 29)
190 #define CE_SKIP_WORKTREE (1 << 30)
191 /* CE_EXTENDED2 is for future extension */
192 #define CE_EXTENDED2 (1 << 31)
194 #define CE_EXTENDED_FLAGS (CE_INTENT_TO_ADD | CE_SKIP_WORKTREE)
197 * Safeguard to avoid saving wrong flags:
198 * - CE_EXTENDED2 won't get saved until its semantic is known
199 * - Bits in 0x0000FFFF have been saved in ce_flags already
200 * - Bits in 0x003F0000 are currently in-memory flags
202 #if CE_EXTENDED_FLAGS & 0x803FFFFF
203 #error "CE_EXTENDED_FLAGS out of range"
207 * Copy the sha1 and stat state of a cache entry from one to
208 * another. But we never change the name, or the hash state!
210 #define CE_STATE_MASK (CE_HASHED | CE_UNHASHED)
211 static inline void copy_cache_entry(struct cache_entry
*dst
, struct cache_entry
*src
)
213 unsigned int state
= dst
->ce_flags
& CE_STATE_MASK
;
215 /* Don't copy hash chain and name */
216 memcpy(dst
, src
, offsetof(struct cache_entry
, next
));
218 /* Restore the hash state */
219 dst
->ce_flags
= (dst
->ce_flags
& ~CE_STATE_MASK
) | state
;
222 static inline unsigned create_ce_flags(size_t len
, unsigned stage
)
224 if (len
>= CE_NAMEMASK
)
226 return (len
| (stage
<< CE_STAGESHIFT
));
229 static inline size_t ce_namelen(const struct cache_entry
*ce
)
231 size_t len
= ce
->ce_flags
& CE_NAMEMASK
;
232 if (len
< CE_NAMEMASK
)
234 return strlen(ce
->name
+ CE_NAMEMASK
) + CE_NAMEMASK
;
237 #define ce_size(ce) cache_entry_size(ce_namelen(ce))
238 #define ondisk_ce_size(ce) (((ce)->ce_flags & CE_EXTENDED) ? \
239 ondisk_cache_entry_extended_size(ce_namelen(ce)) : \
240 ondisk_cache_entry_size(ce_namelen(ce)))
241 #define ce_stage(ce) ((CE_STAGEMASK & (ce)->ce_flags) >> CE_STAGESHIFT)
242 #define ce_uptodate(ce) ((ce)->ce_flags & CE_UPTODATE)
243 #define ce_skip_worktree(ce) ((ce)->ce_flags & CE_SKIP_WORKTREE)
244 #define ce_mark_uptodate(ce) ((ce)->ce_flags |= CE_UPTODATE)
246 #define ce_permissions(mode) (((mode) & 0100) ? 0755 : 0644)
247 static inline unsigned int create_ce_mode(unsigned int mode
)
251 if (S_ISDIR(mode
) || S_ISGITLINK(mode
))
253 return S_IFREG
| ce_permissions(mode
);
255 static inline unsigned int ce_mode_from_stat(struct cache_entry
*ce
, unsigned int mode
)
257 extern int trust_executable_bit
, has_symlinks
;
258 if (!has_symlinks
&& S_ISREG(mode
) &&
259 ce
&& S_ISLNK(ce
->ce_mode
))
261 if (!trust_executable_bit
&& S_ISREG(mode
)) {
262 if (ce
&& S_ISREG(ce
->ce_mode
))
264 return create_ce_mode(0666);
266 return create_ce_mode(mode
);
268 static inline int ce_to_dtype(const struct cache_entry
*ce
)
270 unsigned ce_mode
= ntohl(ce
->ce_mode
);
271 if (S_ISREG(ce_mode
))
273 else if (S_ISDIR(ce_mode
) || S_ISGITLINK(ce_mode
))
275 else if (S_ISLNK(ce_mode
))
280 static inline unsigned int canon_mode(unsigned int mode
)
283 return S_IFREG
| ce_permissions(mode
);
291 #define flexible_size(STRUCT,len) ((offsetof(struct STRUCT,name) + (len) + 8) & ~7)
292 #define cache_entry_size(len) flexible_size(cache_entry,len)
293 #define ondisk_cache_entry_size(len) flexible_size(ondisk_cache_entry,len)
294 #define ondisk_cache_entry_extended_size(len) flexible_size(ondisk_cache_entry_extended,len)
297 struct cache_entry
**cache
;
298 unsigned int cache_nr
, cache_alloc
, cache_changed
;
299 struct string_list
*resolve_undo
;
300 struct cache_tree
*cache_tree
;
301 struct cache_time timestamp
;
303 unsigned name_hash_initialized
: 1,
305 struct hash_table name_hash
;
308 extern struct index_state the_index
;
311 extern void add_name_hash(struct index_state
*istate
, struct cache_entry
*ce
);
313 * We don't actually *remove* it, we can just mark it invalid so that
314 * we won't find it in lookups.
316 * Not only would we have to search the lists (simple enough), but
317 * we'd also have to rehash other hash buckets in case this makes the
318 * hash bucket empty (common). So it's much better to just mark
321 static inline void remove_name_hash(struct cache_entry
*ce
)
323 ce
->ce_flags
|= CE_UNHASHED
;
327 #ifndef NO_THE_INDEX_COMPATIBILITY_MACROS
328 #define active_cache (the_index.cache)
329 #define active_nr (the_index.cache_nr)
330 #define active_alloc (the_index.cache_alloc)
331 #define active_cache_changed (the_index.cache_changed)
332 #define active_cache_tree (the_index.cache_tree)
334 #define read_cache() read_index(&the_index)
335 #define read_cache_from(path) read_index_from(&the_index, (path))
336 #define read_cache_preload(pathspec) read_index_preload(&the_index, (pathspec))
337 #define is_cache_unborn() is_index_unborn(&the_index)
338 #define read_cache_unmerged() read_index_unmerged(&the_index)
339 #define write_cache(newfd, cache, entries) write_index(&the_index, (newfd))
340 #define discard_cache() discard_index(&the_index)
341 #define unmerged_cache() unmerged_index(&the_index)
342 #define cache_name_pos(name, namelen) index_name_pos(&the_index,(name),(namelen))
343 #define add_cache_entry(ce, option) add_index_entry(&the_index, (ce), (option))
344 #define rename_cache_entry_at(pos, new_name) rename_index_entry_at(&the_index, (pos), (new_name))
345 #define remove_cache_entry_at(pos) remove_index_entry_at(&the_index, (pos))
346 #define remove_file_from_cache(path) remove_file_from_index(&the_index, (path))
347 #define add_to_cache(path, st, flags) add_to_index(&the_index, (path), (st), (flags))
348 #define add_file_to_cache(path, flags) add_file_to_index(&the_index, (path), (flags))
349 #define refresh_cache(flags) refresh_index(&the_index, (flags), NULL, NULL, NULL)
350 #define ce_match_stat(ce, st, options) ie_match_stat(&the_index, (ce), (st), (options))
351 #define ce_modified(ce, st, options) ie_modified(&the_index, (ce), (st), (options))
352 #define cache_name_exists(name, namelen, igncase) index_name_exists(&the_index, (name), (namelen), (igncase))
353 #define cache_name_is_other(name, namelen) index_name_is_other(&the_index, (name), (namelen))
354 #define resolve_undo_clear() resolve_undo_clear_index(&the_index)
355 #define unmerge_cache_entry_at(at) unmerge_index_entry_at(&the_index, at)
356 #define unmerge_cache(pathspec) unmerge_index(&the_index, pathspec)
366 /* 5 for future expansion */
373 static inline enum object_type
object_type(unsigned int mode
)
375 return S_ISDIR(mode
) ? OBJ_TREE
:
376 S_ISGITLINK(mode
) ? OBJ_COMMIT
:
380 #define GIT_DIR_ENVIRONMENT "GIT_DIR"
381 #define GIT_WORK_TREE_ENVIRONMENT "GIT_WORK_TREE"
382 #define DEFAULT_GIT_DIR_ENVIRONMENT ".git"
383 #define DB_ENVIRONMENT "GIT_OBJECT_DIRECTORY"
384 #define INDEX_ENVIRONMENT "GIT_INDEX_FILE"
385 #define GRAFT_ENVIRONMENT "GIT_GRAFT_FILE"
386 #define TEMPLATE_DIR_ENVIRONMENT "GIT_TEMPLATE_DIR"
387 #define CONFIG_ENVIRONMENT "GIT_CONFIG"
388 #define CONFIG_DATA_ENVIRONMENT "GIT_CONFIG_PARAMETERS"
389 #define EXEC_PATH_ENVIRONMENT "GIT_EXEC_PATH"
390 #define CEILING_DIRECTORIES_ENVIRONMENT "GIT_CEILING_DIRECTORIES"
391 #define NO_REPLACE_OBJECTS_ENVIRONMENT "GIT_NO_REPLACE_OBJECTS"
392 #define GITATTRIBUTES_FILE ".gitattributes"
393 #define INFOATTRIBUTES_FILE "info/attributes"
394 #define ATTRIBUTE_MACRO_PREFIX "[attr]"
395 #define GIT_NOTES_REF_ENVIRONMENT "GIT_NOTES_REF"
396 #define GIT_NOTES_DEFAULT_REF "refs/notes/commits"
397 #define GIT_NOTES_DISPLAY_REF_ENVIRONMENT "GIT_NOTES_DISPLAY_REF"
398 #define GIT_NOTES_REWRITE_REF_ENVIRONMENT "GIT_NOTES_REWRITE_REF"
399 #define GIT_NOTES_REWRITE_MODE_ENVIRONMENT "GIT_NOTES_REWRITE_MODE"
402 * Repository-local GIT_* environment variables
403 * The array is NULL-terminated to simplify its usage in contexts such
404 * environment creation or simple walk of the list.
405 * The number of non-NULL entries is available as a macro.
407 #define LOCAL_REPO_ENV_SIZE 9
408 extern const char *const local_repo_env
[LOCAL_REPO_ENV_SIZE
+ 1];
410 extern int is_bare_repository_cfg
;
411 extern int is_bare_repository(void);
412 extern int is_inside_git_dir(void);
413 extern char *git_work_tree_cfg
;
414 extern int is_inside_work_tree(void);
415 extern int have_git_dir(void);
416 extern const char *get_git_dir(void);
417 extern char *get_object_directory(void);
418 extern char *get_index_file(void);
419 extern char *get_graft_file(void);
420 extern int set_git_dir(const char *path
);
421 extern const char *get_git_work_tree(void);
422 extern const char *read_gitfile_gently(const char *path
);
423 extern void set_git_work_tree(const char *tree
);
425 #define ALTERNATE_DB_ENVIRONMENT "GIT_ALTERNATE_OBJECT_DIRECTORIES"
427 extern const char **get_pathspec(const char *prefix
, const char **pathspec
);
428 extern void setup_work_tree(void);
429 extern const char *setup_git_directory_gently(int *);
430 extern const char *setup_git_directory(void);
431 extern char *prefix_path(const char *prefix
, int len
, const char *path
);
432 extern const char *prefix_filename(const char *prefix
, int len
, const char *path
);
433 extern int check_filename(const char *prefix
, const char *name
);
434 extern void verify_filename(const char *prefix
, const char *name
);
435 extern void verify_non_filename(const char *prefix
, const char *name
);
437 #define INIT_DB_QUIET 0x0001
439 extern int init_db(const char *template_dir
, unsigned int flags
);
441 #define alloc_nr(x) (((x)+16)*3/2)
444 * Realloc the buffer pointed at by variable 'x' so that it can hold
445 * at least 'nr' entries; the number of entries currently allocated
446 * is 'alloc', using the standard growing factor alloc_nr() macro.
448 * DO NOT USE any expression with side-effect for 'x', 'nr', or 'alloc'.
450 #define ALLOC_GROW(x, nr, alloc) \
452 if ((nr) > alloc) { \
453 if (alloc_nr(alloc) < (nr)) \
456 alloc = alloc_nr(alloc); \
457 x = xrealloc((x), alloc * sizeof(*(x))); \
461 /* Initialize and use the cache information */
462 extern int read_index(struct index_state
*);
463 extern int read_index_preload(struct index_state
*, const char **pathspec
);
464 extern int read_index_from(struct index_state
*, const char *path
);
465 extern int is_index_unborn(struct index_state
*);
466 extern int read_index_unmerged(struct index_state
*);
467 extern int write_index(struct index_state
*, int newfd
);
468 extern int discard_index(struct index_state
*);
469 extern int unmerged_index(const struct index_state
*);
470 extern int verify_path(const char *path
);
471 extern struct cache_entry
*index_name_exists(struct index_state
*istate
, const char *name
, int namelen
, int igncase
);
472 extern int index_name_pos(const struct index_state
*, const char *name
, int namelen
);
473 #define ADD_CACHE_OK_TO_ADD 1 /* Ok to add */
474 #define ADD_CACHE_OK_TO_REPLACE 2 /* Ok to replace file/directory */
475 #define ADD_CACHE_SKIP_DFCHECK 4 /* Ok to skip DF conflict checks */
476 #define ADD_CACHE_JUST_APPEND 8 /* Append only; tree.c::read_tree() */
477 #define ADD_CACHE_NEW_ONLY 16 /* Do not replace existing ones */
478 extern int add_index_entry(struct index_state
*, struct cache_entry
*ce
, int option
);
479 extern void rename_index_entry_at(struct index_state
*, int pos
, const char *new_name
);
480 extern int remove_index_entry_at(struct index_state
*, int pos
);
481 extern void remove_marked_cache_entries(struct index_state
*istate
);
482 extern int remove_file_from_index(struct index_state
*, const char *path
);
483 #define ADD_CACHE_VERBOSE 1
484 #define ADD_CACHE_PRETEND 2
485 #define ADD_CACHE_IGNORE_ERRORS 4
486 #define ADD_CACHE_IGNORE_REMOVAL 8
487 #define ADD_CACHE_INTENT 16
488 extern int add_to_index(struct index_state
*, const char *path
, struct stat
*, int flags
);
489 extern int add_file_to_index(struct index_state
*, const char *path
, int flags
);
490 extern struct cache_entry
*make_cache_entry(unsigned int mode
, const unsigned char *sha1
, const char *path
, int stage
, int refresh
);
491 extern int ce_same_name(struct cache_entry
*a
, struct cache_entry
*b
);
492 extern int index_name_is_other(const struct index_state
*, const char *, int);
494 /* do stat comparison even if CE_VALID is true */
495 #define CE_MATCH_IGNORE_VALID 01
496 /* do not check the contents but report dirty on racily-clean entries */
497 #define CE_MATCH_RACY_IS_DIRTY 02
498 /* do stat comparison even if CE_SKIP_WORKTREE is true */
499 #define CE_MATCH_IGNORE_SKIP_WORKTREE 04
500 extern int ie_match_stat(const struct index_state
*, struct cache_entry
*, struct stat
*, unsigned int);
501 extern int ie_modified(const struct index_state
*, struct cache_entry
*, struct stat
*, unsigned int);
504 const char **raw
; /* get_pathspec() result, not freed by free_pathspec() */
509 struct pathspec_item
{
516 extern int init_pathspec(struct pathspec
*, const char **);
517 extern void free_pathspec(struct pathspec
*);
518 extern int ce_path_match(const struct cache_entry
*ce
, const struct pathspec
*pathspec
);
519 extern int index_fd(unsigned char *sha1
, int fd
, struct stat
*st
, int write_object
, enum object_type type
, const char *path
);
520 extern int index_path(unsigned char *sha1
, const char *path
, struct stat
*st
, int write_object
);
521 extern void fill_stat_cache_info(struct cache_entry
*ce
, struct stat
*st
);
523 #define REFRESH_REALLY 0x0001 /* ignore_valid */
524 #define REFRESH_UNMERGED 0x0002 /* allow unmerged */
525 #define REFRESH_QUIET 0x0004 /* be quiet about it */
526 #define REFRESH_IGNORE_MISSING 0x0008 /* ignore non-existent */
527 #define REFRESH_IGNORE_SUBMODULES 0x0010 /* ignore submodules */
528 #define REFRESH_IN_PORCELAIN 0x0020 /* user friendly output, not "needs update" */
529 extern int refresh_index(struct index_state
*, unsigned int flags
, const char **pathspec
, char *seen
, const char *header_msg
);
532 struct lock_file
*next
;
536 char filename
[PATH_MAX
];
538 #define LOCK_DIE_ON_ERROR 1
539 #define LOCK_NODEREF 2
540 extern int unable_to_lock_error(const char *path
, int err
);
541 extern NORETURN
void unable_to_lock_index_die(const char *path
, int err
);
542 extern int hold_lock_file_for_update(struct lock_file
*, const char *path
, int);
543 extern int hold_lock_file_for_append(struct lock_file
*, const char *path
, int);
544 extern int commit_lock_file(struct lock_file
*);
546 extern int hold_locked_index(struct lock_file
*, int);
547 extern int commit_locked_index(struct lock_file
*);
548 extern void set_alternate_index_output(const char *);
549 extern int close_lock_file(struct lock_file
*);
550 extern void rollback_lock_file(struct lock_file
*);
551 extern int delete_ref(const char *, const unsigned char *sha1
, int delopt
);
553 /* Environment bits from configuration mechanism */
554 extern int trust_executable_bit
;
555 extern int trust_ctime
;
556 extern int quote_path_fully
;
557 extern int has_symlinks
;
558 extern int ignore_case
;
559 extern int assume_unchanged
;
560 extern int prefer_symlink_refs
;
561 extern int log_all_ref_updates
;
562 extern int warn_ambiguous_refs
;
563 extern int unique_abbrev_extra_length
;
564 extern int shared_repository
;
565 extern const char *apply_default_whitespace
;
566 extern const char *apply_default_ignorewhitespace
;
567 extern int zlib_compression_level
;
568 extern int core_compression_level
;
569 extern int core_compression_seen
;
570 extern size_t packed_git_window_size
;
571 extern size_t packed_git_limit
;
572 extern size_t delta_base_cache_limit
;
573 extern int read_replace_refs
;
574 extern int fsync_object_files
;
575 extern int core_preload_index
;
576 extern int core_apply_sparse_checkout
;
584 extern enum safe_crlf safe_crlf
;
589 AUTO_CRLF_INPUT
= -1,
592 extern enum auto_crlf auto_crlf
;
599 EOL_NATIVE
= EOL_CRLF
608 BRANCH_TRACK_UNSPECIFIED
= -1,
609 BRANCH_TRACK_NEVER
= 0,
612 BRANCH_TRACK_EXPLICIT
,
613 BRANCH_TRACK_OVERRIDE
616 enum rebase_setup_type
{
617 AUTOREBASE_NEVER
= 0,
623 enum push_default_type
{
624 PUSH_DEFAULT_NOTHING
= 0,
625 PUSH_DEFAULT_MATCHING
,
626 PUSH_DEFAULT_TRACKING
,
630 extern enum branch_track git_branch_track
;
631 extern enum rebase_setup_type autorebase
;
632 extern enum push_default_type push_default
;
634 enum object_creation_mode
{
635 OBJECT_CREATION_USES_HARDLINKS
= 0,
636 OBJECT_CREATION_USES_RENAMES
= 1
639 extern enum object_creation_mode object_creation_mode
;
641 extern char *notes_ref_name
;
643 extern int grafts_replace_parents
;
645 #define GIT_REPO_VERSION 0
646 extern int repository_format_version
;
647 extern int check_repository_format(void);
649 #define MTIME_CHANGED 0x0001
650 #define CTIME_CHANGED 0x0002
651 #define OWNER_CHANGED 0x0004
652 #define MODE_CHANGED 0x0008
653 #define INODE_CHANGED 0x0010
654 #define DATA_CHANGED 0x0020
655 #define TYPE_CHANGED 0x0040
657 extern char *mksnpath(char *buf
, size_t n
, const char *fmt
, ...)
658 __attribute__((format (printf
, 3, 4)));
659 extern char *git_snpath(char *buf
, size_t n
, const char *fmt
, ...)
660 __attribute__((format (printf
, 3, 4)));
661 extern char *git_pathdup(const char *fmt
, ...)
662 __attribute__((format (printf
, 1, 2)));
664 /* Return a statically allocated filename matching the sha1 signature */
665 extern char *mkpath(const char *fmt
, ...) __attribute__((format (printf
, 1, 2)));
666 extern char *git_path(const char *fmt
, ...) __attribute__((format (printf
, 1, 2)));
667 extern char *git_path_submodule(const char *path
, const char *fmt
, ...)
668 __attribute__((format (printf
, 2, 3)));
670 extern char *sha1_file_name(const unsigned char *sha1
);
671 extern char *sha1_pack_name(const unsigned char *sha1
);
672 extern char *sha1_pack_index_name(const unsigned char *sha1
);
673 extern const char *find_unique_abbrev(const unsigned char *sha1
, int);
674 extern const unsigned char null_sha1
[20];
675 static inline int is_null_sha1(const unsigned char *sha1
)
677 return !memcmp(sha1
, null_sha1
, 20);
679 static inline int hashcmp(const unsigned char *sha1
, const unsigned char *sha2
)
681 return memcmp(sha1
, sha2
, 20);
683 static inline void hashcpy(unsigned char *sha_dst
, const unsigned char *sha_src
)
685 memcpy(sha_dst
, sha_src
, 20);
687 static inline void hashclr(unsigned char *hash
)
692 #define EMPTY_TREE_SHA1_HEX \
693 "4b825dc642cb6eb9a060e54bf8d69288fbee4904"
694 #define EMPTY_TREE_SHA1_BIN_LITERAL \
695 "\x4b\x82\x5d\xc6\x42\xcb\x6e\xb9\xa0\x60" \
696 "\xe5\x4b\xf8\xd6\x92\x88\xfb\xee\x49\x04"
697 #define EMPTY_TREE_SHA1_BIN \
698 ((const unsigned char *) EMPTY_TREE_SHA1_BIN_LITERAL)
700 int git_mkstemp(char *path
, size_t n
, const char *template);
702 int git_mkstemps(char *path
, size_t n
, const char *template, int suffix_len
);
704 /* set default permissions by passing mode arguments to open(2) */
705 int git_mkstemps_mode(char *pattern
, int suffix_len
, int mode
);
706 int git_mkstemp_mode(char *pattern
, int mode
);
711 * PERM_UMASK, OLD_PERM_GROUP and OLD_PERM_EVERYBODY enumerations must
712 * not be changed. Old repositories have core.sharedrepository written in
713 * numeric format, and therefore these values are preserved for compatibility
719 OLD_PERM_EVERYBODY
= 2,
721 PERM_EVERYBODY
= 0664
723 int git_config_perm(const char *var
, const char *value
);
724 int set_shared_perm(const char *path
, int mode
);
725 #define adjust_shared_perm(path) set_shared_perm((path), 0)
726 int safe_create_leading_directories(char *path
);
727 int safe_create_leading_directories_const(const char *path
);
728 extern char *expand_user_path(const char *path
);
729 char *enter_repo(char *path
, int strict
);
730 static inline int is_absolute_path(const char *path
)
732 return path
[0] == '/' || has_dos_drive_prefix(path
);
734 int is_directory(const char *);
735 const char *make_absolute_path(const char *path
);
736 const char *make_nonrelative_path(const char *path
);
737 const char *make_relative_path(const char *abs
, const char *base
);
738 int normalize_path_copy(char *dst
, const char *src
);
739 int longest_ancestor_length(const char *path
, const char *prefix_list
);
740 char *strip_path_suffix(const char *path
, const char *suffix
);
741 int daemon_avoid_alias(const char *path
);
742 int offset_1st_component(const char *path
);
744 /* Read and unpack a sha1 file into memory, write memory to a sha1 file */
745 extern int sha1_object_info(const unsigned char *, unsigned long *);
746 extern void *read_sha1_file_repl(const unsigned char *sha1
, enum object_type
*type
, unsigned long *size
, const unsigned char **replacement
);
747 static inline void *read_sha1_file(const unsigned char *sha1
, enum object_type
*type
, unsigned long *size
)
749 return read_sha1_file_repl(sha1
, type
, size
, NULL
);
751 extern int hash_sha1_file(const void *buf
, unsigned long len
, const char *type
, unsigned char *sha1
);
752 extern int write_sha1_file(const void *buf
, unsigned long len
, const char *type
, unsigned char *return_sha1
);
753 extern int pretend_sha1_file(void *, unsigned long, enum object_type
, unsigned char *);
754 extern int force_object_loose(const unsigned char *sha1
, time_t mtime
);
756 /* global flag to enable extra checks when accessing packed objects */
757 extern int do_check_packed_object_crc
;
759 extern int check_sha1_signature(const unsigned char *sha1
, void *buf
, unsigned long size
, const char *type
);
761 extern int move_temp_to_file(const char *tmpfile
, const char *filename
);
763 extern int has_sha1_pack(const unsigned char *sha1
);
764 extern int has_sha1_file(const unsigned char *sha1
);
765 extern int has_loose_object_nonlocal(const unsigned char *sha1
);
767 extern int has_pack_index(const unsigned char *sha1
);
769 extern void assert_sha1_type(const unsigned char *sha1
, enum object_type expect
);
771 extern const signed char hexval_table
[256];
772 static inline unsigned int hexval(unsigned char c
)
774 return hexval_table
[c
];
777 /* Convert to/from hex/sha1 representation */
778 #define MINIMUM_ABBREV 4
779 #define DEFAULT_ABBREV 7
781 struct object_context
{
782 unsigned char tree
[20];
787 extern int get_sha1(const char *str
, unsigned char *sha1
);
788 extern int get_sha1_with_mode_1(const char *str
, unsigned char *sha1
, unsigned *mode
, int gently
, const char *prefix
);
789 static inline int get_sha1_with_mode(const char *str
, unsigned char *sha1
, unsigned *mode
)
791 return get_sha1_with_mode_1(str
, sha1
, mode
, 1, NULL
);
793 extern int get_sha1_with_context_1(const char *name
, unsigned char *sha1
, struct object_context
*orc
, int gently
, const char *prefix
);
794 static inline int get_sha1_with_context(const char *str
, unsigned char *sha1
, struct object_context
*orc
)
796 return get_sha1_with_context_1(str
, sha1
, orc
, 1, NULL
);
798 extern int get_sha1_hex(const char *hex
, unsigned char *sha1
);
799 extern char *sha1_to_hex(const unsigned char *sha1
); /* static buffer result! */
800 extern int read_ref(const char *filename
, unsigned char *sha1
);
801 extern const char *resolve_ref(const char *path
, unsigned char *sha1
, int, int *);
802 extern int dwim_ref(const char *str
, int len
, unsigned char *sha1
, char **ref
);
803 extern int dwim_log(const char *str
, int len
, unsigned char *sha1
, char **ref
);
804 extern int interpret_branch_name(const char *str
, struct strbuf
*);
805 extern int get_sha1_mb(const char *str
, unsigned char *sha1
);
807 extern int refname_match(const char *abbrev_name
, const char *full_name
, const char **rules
);
808 extern const char *ref_rev_parse_rules
[];
809 extern const char *ref_fetch_rules
[];
811 extern int create_symref(const char *ref
, const char *refs_heads_master
, const char *logmsg
);
812 extern int validate_headref(const char *ref
);
814 extern int base_name_compare(const char *name1
, int len1
, int mode1
, const char *name2
, int len2
, int mode2
);
815 extern int df_name_compare(const char *name1
, int len1
, int mode1
, const char *name2
, int len2
, int mode2
);
816 extern int cache_name_compare(const char *name1
, int len1
, const char *name2
, int len2
);
818 extern void *read_object_with_reference(const unsigned char *sha1
,
819 const char *required_type
,
821 unsigned char *sha1_ret
);
823 extern struct object
*peel_to_type(const char *name
, int namelen
,
824 struct object
*o
, enum object_type
);
836 const char *show_date(unsigned long time
, int timezone
, enum date_mode mode
);
837 const char *show_date_relative(unsigned long time
, int tz
,
838 const struct timeval
*now
,
840 size_t timebuf_size
);
841 int parse_date(const char *date
, char *buf
, int bufsize
);
842 int parse_date_basic(const char *date
, unsigned long *timestamp
, int *offset
);
843 void datestamp(char *buf
, int bufsize
);
844 #define approxidate(s) approxidate_careful((s), NULL)
845 unsigned long approxidate_careful(const char *, int *);
846 unsigned long approxidate_relative(const char *date
, const struct timeval
*now
);
847 enum date_mode
parse_date_format(const char *format
);
849 #define IDENT_WARN_ON_NO_NAME 1
850 #define IDENT_ERROR_ON_NO_NAME 2
851 #define IDENT_NO_DATE 4
852 extern const char *git_author_info(int);
853 extern const char *git_committer_info(int);
854 extern const char *fmt_ident(const char *name
, const char *email
, const char *date_str
, int);
855 extern const char *fmt_name(const char *name
, const char *email
);
856 extern const char *git_editor(void);
857 extern const char *git_pager(int stdout_is_tty
);
860 const char *base_dir
;
868 extern int checkout_entry(struct cache_entry
*ce
, const struct checkout
*state
, char *topath
);
871 char path
[PATH_MAX
+ 1];
875 int prefix_len_stat_func
;
878 extern int has_symlink_leading_path(const char *name
, int len
);
879 extern int threaded_has_symlink_leading_path(struct cache_def
*, const char *, int);
880 extern int check_leading_path(const char *name
, int len
);
881 extern int has_dirs_only_path(const char *name
, int len
, int prefix_len
);
882 extern void schedule_dir_for_removal(const char *name
, int len
);
883 extern void remove_scheduled_dirs(void);
885 extern struct alternate_object_database
{
886 struct alternate_object_database
*next
;
888 char base
[FLEX_ARRAY
]; /* more */
890 extern void prepare_alt_odb(void);
891 extern void add_to_alternates_file(const char *reference
);
892 typedef int alt_odb_fn(struct alternate_object_database
*, void *);
893 extern void foreach_alt_odb(alt_odb_fn
, void*);
896 struct pack_window
*next
;
900 unsigned int last_used
;
901 unsigned int inuse_cnt
;
904 extern struct packed_git
{
905 struct packed_git
*next
;
906 struct pack_window
*windows
;
908 const void *index_data
;
910 uint32_t num_objects
;
911 uint32_t num_bad_objects
;
912 unsigned char *bad_object_sha1
;
916 unsigned pack_local
:1,
918 unsigned char sha1
[20];
919 /* something like ".git/objects/pack/xxxxx.pack" */
920 char pack_name
[FLEX_ARRAY
]; /* more */
925 unsigned char sha1
[20];
926 struct packed_git
*p
;
931 unsigned char old_sha1
[20];
932 unsigned char new_sha1
[20];
934 unsigned int force
:1,
941 REF_STATUS_REJECT_NONFASTFORWARD
,
942 REF_STATUS_REJECT_NODELETE
,
944 REF_STATUS_REMOTE_REJECT
,
945 REF_STATUS_EXPECTING_REPORT
948 struct ref
*peer_ref
; /* when renaming */
949 char name
[FLEX_ARRAY
]; /* more */
952 #define REF_NORMAL (1u << 0)
953 #define REF_HEADS (1u << 1)
954 #define REF_TAGS (1u << 2)
956 extern struct ref
*find_ref_by_name(const struct ref
*list
, const char *name
);
958 #define CONNECT_VERBOSE (1u << 0)
959 extern char *git_getpass(const char *prompt
);
960 extern struct child_process
*git_connect(int fd
[2], const char *url
, const char *prog
, int flags
);
961 extern int finish_connect(struct child_process
*conn
);
962 extern int path_match(const char *path
, int nr
, char **match
);
963 struct extra_have_objects
{
965 unsigned char (*array
)[20];
967 extern struct ref
**get_remote_heads(int in
, struct ref
**list
, int nr_match
, char **match
, unsigned int flags
, struct extra_have_objects
*);
968 extern int server_supports(const char *feature
);
970 extern struct packed_git
*parse_pack_index(unsigned char *sha1
, const char *idx_path
);
972 extern void prepare_packed_git(void);
973 extern void reprepare_packed_git(void);
974 extern void install_packed_git(struct packed_git
*pack
);
976 extern struct packed_git
*find_sha1_pack(const unsigned char *sha1
,
977 struct packed_git
*packs
);
979 extern void pack_report(void);
980 extern int open_pack_index(struct packed_git
*);
981 extern void close_pack_index(struct packed_git
*);
982 extern unsigned char *use_pack(struct packed_git
*, struct pack_window
**, off_t
, unsigned int *);
983 extern void close_pack_windows(struct packed_git
*);
984 extern void unuse_pack(struct pack_window
**);
985 extern void free_pack_by_name(const char *);
986 extern void clear_delta_base_cache(void);
987 extern struct packed_git
*add_packed_git(const char *, int, int);
988 extern const unsigned char *nth_packed_object_sha1(struct packed_git
*, uint32_t);
989 extern off_t
nth_packed_object_offset(const struct packed_git
*, uint32_t);
990 extern off_t
find_pack_entry_one(const unsigned char *, struct packed_git
*);
991 extern void *unpack_entry(struct packed_git
*, off_t
, enum object_type
*, unsigned long *);
992 extern unsigned long unpack_object_header_buffer(const unsigned char *buf
, unsigned long len
, enum object_type
*type
, unsigned long *sizep
);
993 extern unsigned long get_size_from_delta(struct packed_git
*, struct pack_window
**, off_t
);
994 extern const char *packed_object_info_detail(struct packed_git
*, off_t
, unsigned long *, unsigned long *, unsigned int *, unsigned char *);
996 /* Dumb servers support */
997 extern int update_server_info(int);
999 typedef int (*config_fn_t
)(const char *, const char *, void *);
1000 extern int git_default_config(const char *, const char *, void *);
1001 extern int git_config_from_file(config_fn_t fn
, const char *, void *);
1002 extern void git_config_push_parameter(const char *text
);
1003 extern int git_config_parse_parameter(const char *text
);
1004 extern int git_config_parse_environment(void);
1005 extern int git_config_from_parameters(config_fn_t fn
, void *data
);
1006 extern int git_config(config_fn_t fn
, void *);
1007 extern int git_config_early(config_fn_t fn
, void *, const char *repo_config
);
1008 extern int git_parse_ulong(const char *, unsigned long *);
1009 extern int git_config_int(const char *, const char *);
1010 extern unsigned long git_config_ulong(const char *, const char *);
1011 extern int git_config_bool_or_int(const char *, const char *, int *);
1012 extern int git_config_bool(const char *, const char *);
1013 extern int git_config_maybe_bool(const char *, const char *);
1014 extern int git_config_string(const char **, const char *, const char *);
1015 extern int git_config_pathname(const char **, const char *, const char *);
1016 extern int git_config_set(const char *, const char *);
1017 extern int git_config_set_multivar(const char *, const char *, const char *, int);
1018 extern int git_config_rename_section(const char *, const char *);
1019 extern const char *git_etc_gitconfig(void);
1020 extern int check_repository_format_version(const char *var
, const char *value
, void *cb
);
1021 extern int git_env_bool(const char *, int);
1022 extern int git_config_system(void);
1023 extern int git_config_global(void);
1024 extern int config_error_nonbool(const char *);
1025 extern const char *get_log_output_encoding(void);
1026 extern const char *get_commit_output_encoding(void);
1028 extern const char *config_exclusive_filename
;
1030 #define MAX_GITNAME (1000)
1031 extern char git_default_email
[MAX_GITNAME
];
1032 extern char git_default_name
[MAX_GITNAME
];
1033 #define IDENT_NAME_GIVEN 01
1034 #define IDENT_MAIL_GIVEN 02
1035 #define IDENT_ALL_GIVEN (IDENT_NAME_GIVEN|IDENT_MAIL_GIVEN)
1036 extern int user_ident_explicitly_given
;
1037 extern int user_ident_sufficiently_given(void);
1039 extern const char *git_commit_encoding
;
1040 extern const char *git_log_output_encoding
;
1041 extern const char *git_mailmap_file
;
1043 /* IO helper functions */
1044 extern void maybe_flush_or_die(FILE *, const char *);
1045 extern int copy_fd(int ifd
, int ofd
);
1046 extern int copy_file(const char *dst
, const char *src
, int mode
);
1047 extern int copy_file_with_time(const char *dst
, const char *src
, int mode
);
1048 extern void write_or_die(int fd
, const void *buf
, size_t count
);
1049 extern int write_or_whine(int fd
, const void *buf
, size_t count
, const char *msg
);
1050 extern int write_or_whine_pipe(int fd
, const void *buf
, size_t count
, const char *msg
);
1051 extern void fsync_or_die(int fd
, const char *);
1053 extern ssize_t
read_in_full(int fd
, void *buf
, size_t count
);
1054 extern ssize_t
write_in_full(int fd
, const void *buf
, size_t count
);
1055 static inline ssize_t
write_str_in_full(int fd
, const char *str
)
1057 return write_in_full(fd
, str
, strlen(str
));
1061 extern void setup_pager(void);
1062 extern const char *pager_program
;
1063 extern int pager_in_use(void);
1064 extern int pager_use_color
;
1066 extern const char *editor_program
;
1067 extern const char *askpass_program
;
1068 extern const char *excludes_file
;
1071 int decode_85(char *dst
, const char *line
, int linelen
);
1072 void encode_85(char *buf
, const unsigned char *data
, int bytes
);
1075 extern void *alloc_blob_node(void);
1076 extern void *alloc_tree_node(void);
1077 extern void *alloc_commit_node(void);
1078 extern void *alloc_tag_node(void);
1079 extern void *alloc_object_node(void);
1080 extern void alloc_report(void);
1083 __attribute__((format (printf
, 1, 2)))
1084 extern void trace_printf(const char *format
, ...);
1085 __attribute__((format (printf
, 2, 3)))
1086 extern void trace_argv_printf(const char **argv
, const char *format
, ...);
1087 extern void trace_repo_setup(const char *prefix
);
1090 /* returns 1 if *dst was used */
1091 extern int convert_to_git(const char *path
, const char *src
, size_t len
,
1092 struct strbuf
*dst
, enum safe_crlf checksafe
);
1093 extern int convert_to_working_tree(const char *path
, const char *src
, size_t len
, struct strbuf
*dst
);
1094 extern int renormalize_buffer(const char *path
, const char *src
, size_t len
, struct strbuf
*dst
);
1098 * return 0 if success, 1 - if addition of a file failed and
1099 * ADD_FILES_IGNORE_ERRORS was specified in flags
1101 int add_files_to_cache(const char *prefix
, const char **pathspec
, int flags
);
1104 extern int diff_auto_refresh_index
;
1107 void shift_tree(const unsigned char *, const unsigned char *, unsigned char *, int);
1108 void shift_tree_by(const unsigned char *, const unsigned char *, unsigned char *, const char *);
1112 * used by both diff and apply
1113 * last two digits are tab width
1115 #define WS_BLANK_AT_EOL 0100
1116 #define WS_SPACE_BEFORE_TAB 0200
1117 #define WS_INDENT_WITH_NON_TAB 0400
1118 #define WS_CR_AT_EOL 01000
1119 #define WS_BLANK_AT_EOF 02000
1120 #define WS_TAB_IN_INDENT 04000
1121 #define WS_TRAILING_SPACE (WS_BLANK_AT_EOL|WS_BLANK_AT_EOF)
1122 #define WS_DEFAULT_RULE (WS_TRAILING_SPACE|WS_SPACE_BEFORE_TAB|8)
1123 #define WS_TAB_WIDTH_MASK 077
1124 extern unsigned whitespace_rule_cfg
;
1125 extern unsigned whitespace_rule(const char *);
1126 extern unsigned parse_whitespace_rule(const char *);
1127 extern unsigned ws_check(const char *line
, int len
, unsigned ws_rule
);
1128 extern void ws_check_emit(const char *line
, int len
, unsigned ws_rule
, FILE *stream
, const char *set
, const char *reset
, const char *ws
);
1129 extern char *whitespace_error_string(unsigned ws
);
1130 extern void ws_fix_copy(struct strbuf
*, const char *, int, unsigned, int *);
1131 extern int ws_blank_line(const char *line
, int len
, unsigned ws_rule
);
1132 #define ws_tab_width(rule) ((rule) & WS_TAB_WIDTH_MASK)
1135 int report_path_error(const char *ps_matched
, const char **pathspec
, int prefix_offset
);
1136 void overlay_tree_on_cache(const char *tree_name
, const char *prefix
);
1138 char *alias_lookup(const char *alias
);
1139 int split_cmdline(char *cmdline
, const char ***argv
);
1140 /* Takes a negative value returned by split_cmdline */
1141 const char *split_cmdline_strerror(int cmdline_errno
);
1144 struct startup_info
{
1145 int have_repository
;
1148 extern struct startup_info
*startup_info
;
1150 /* builtin/merge.c */
1151 int checkout_fast_forward(const unsigned char *from
, const unsigned char *to
);
1153 #endif /* CACHE_H */