4 #include "git-compat-util.h"
14 #define git_SHA_CTX SHA_CTX
15 #define git_SHA1_Init SHA1_Init
16 #define git_SHA1_Update SHA1_Update
17 #define git_SHA1_Final SHA1_Final
21 typedef struct git_zstream
{
23 unsigned long avail_in
;
24 unsigned long avail_out
;
25 unsigned long total_in
;
26 unsigned long total_out
;
27 unsigned char *next_in
;
28 unsigned char *next_out
;
31 void git_inflate_init(git_zstream
*);
32 void git_inflate_init_gzip_only(git_zstream
*);
33 void git_inflate_end(git_zstream
*);
34 int git_inflate(git_zstream
*, int flush
);
36 void git_deflate_init(git_zstream
*, int level
);
37 void git_deflate_init_gzip(git_zstream
*, int level
);
38 void git_deflate_init_raw(git_zstream
*, int level
);
39 void git_deflate_end(git_zstream
*);
40 int git_deflate_abort(git_zstream
*);
41 int git_deflate_end_gently(git_zstream
*);
42 int git_deflate(git_zstream
*, int flush
);
43 unsigned long git_deflate_bound(git_zstream
*, unsigned long);
45 #if defined(DT_UNKNOWN) && !defined(NO_D_TYPE_IN_DIRENT)
46 #define DTYPE(de) ((de)->d_type)
56 #define DTYPE(de) DT_UNKNOWN
59 /* unknown mode (impossible combination S_IFIFO|S_IFCHR) */
60 #define S_IFINVALID 0030000
63 * A "directory link" is a link to another git directory.
65 * The value 0160000 is not normally a valid mode, and
66 * also just happens to be S_IFDIR + S_IFLNK
68 * NOTE! We *really* shouldn't depend on the S_IFxxx macros
69 * always having the same values everywhere. We should use
70 * our internal git values for these things, and then we can
71 * translate that to the OS-specific value. It just so
72 * happens that everybody shares the same bit representation
73 * in the UNIX world (and apparently wider too..)
75 #define S_IFGITLINK 0160000
76 #define S_ISGITLINK(m) (((m) & S_IFMT) == S_IFGITLINK)
79 * Some mode bits are also used internally for computations.
81 * They *must* not overlap with any valid modes, and they *must* not be emitted
82 * to outside world - i.e. appear on disk or network. In other words, it's just
83 * temporary fields, which we internally use, but they have to stay in-house.
85 * ( such approach is valid, as standard S_IF* fits into 16 bits, and in Git
86 * codebase mode is `unsigned int` which is assumed to be at least 32 bits )
89 /* used internally in tree-diff */
90 #define S_DIFFTREE_IFXMIN_NEQ 0x80000000
94 * Intensive research over the course of many years has shown that
95 * port 9418 is totally unused by anything else. Or
97 * Your search - "port 9418" - did not match any documents.
99 * as www.google.com puts it.
101 * This port has been properly assigned for git use by IANA:
102 * git (Assigned-9418) [I06-050728-0001].
104 * git 9418/tcp git pack transfer service
105 * git 9418/udp git pack transfer service
107 * with Linus Torvalds <torvalds@osdl.org> as the point of
108 * contact. September 2005.
110 * See http://www.iana.org/assignments/port-numbers
112 #define DEFAULT_GIT_PORT 9418
115 * Basic data structures for the directory cache
118 #define CACHE_SIGNATURE 0x44495243 /* "DIRC" */
119 struct cache_header
{
120 uint32_t hdr_signature
;
121 uint32_t hdr_version
;
122 uint32_t hdr_entries
;
125 #define INDEX_FORMAT_LB 2
126 #define INDEX_FORMAT_UB 4
129 * The "cache_time" is just the low 32 bits of the
130 * time. It doesn't matter if it overflows - we only
131 * check it for equality in the 32 bits we save.
139 struct cache_time sd_ctime
;
140 struct cache_time sd_mtime
;
145 unsigned int sd_size
;
149 struct hashmap_entry ent
;
150 struct stat_data ce_stat_data
;
151 unsigned int ce_mode
;
152 unsigned int ce_flags
;
153 unsigned int ce_namelen
;
154 unsigned int index
; /* for link extension */
155 unsigned char sha1
[20];
156 char name
[FLEX_ARRAY
]; /* more */
159 #define CE_STAGEMASK (0x3000)
160 #define CE_EXTENDED (0x4000)
161 #define CE_VALID (0x8000)
162 #define CE_STAGESHIFT 12
165 * Range 0xFFFF0FFF 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_WT_REMOVE (1 << 22) /* remove in work directory */
180 #define CE_CONFLICTED (1 << 23)
182 #define CE_UNPACKED (1 << 24)
183 #define CE_NEW_SKIP_WORKTREE (1 << 25)
185 /* used to temporarily mark paths matched by pathspecs */
186 #define CE_MATCHED (1 << 26)
188 #define CE_UPDATE_IN_BASE (1 << 27)
189 #define CE_STRIP_NAME (1 << 28)
192 * Extended on-disk flags
194 #define CE_INTENT_TO_ADD (1 << 29)
195 #define CE_SKIP_WORKTREE (1 << 30)
196 /* CE_EXTENDED2 is for future extension */
197 #define CE_EXTENDED2 (1 << 31)
199 #define CE_EXTENDED_FLAGS (CE_INTENT_TO_ADD | CE_SKIP_WORKTREE)
202 * Safeguard to avoid saving wrong flags:
203 * - CE_EXTENDED2 won't get saved until its semantic is known
204 * - Bits in 0x0000FFFF have been saved in ce_flags already
205 * - Bits in 0x003F0000 are currently in-memory flags
207 #if CE_EXTENDED_FLAGS & 0x803FFFFF
208 #error "CE_EXTENDED_FLAGS out of range"
214 * Copy the sha1 and stat state of a cache entry from one to
215 * another. But we never change the name, or the hash state!
217 static inline void copy_cache_entry(struct cache_entry
*dst
,
218 const struct cache_entry
*src
)
220 unsigned int state
= dst
->ce_flags
& CE_HASHED
;
222 /* Don't copy hash chain and name */
223 memcpy(&dst
->ce_stat_data
, &src
->ce_stat_data
,
224 offsetof(struct cache_entry
, name
) -
225 offsetof(struct cache_entry
, ce_stat_data
));
227 /* Restore the hash state */
228 dst
->ce_flags
= (dst
->ce_flags
& ~CE_HASHED
) | state
;
231 static inline unsigned create_ce_flags(unsigned stage
)
233 return (stage
<< CE_STAGESHIFT
);
236 #define ce_namelen(ce) ((ce)->ce_namelen)
237 #define ce_size(ce) cache_entry_size(ce_namelen(ce))
238 #define ce_stage(ce) ((CE_STAGEMASK & (ce)->ce_flags) >> CE_STAGESHIFT)
239 #define ce_uptodate(ce) ((ce)->ce_flags & CE_UPTODATE)
240 #define ce_skip_worktree(ce) ((ce)->ce_flags & CE_SKIP_WORKTREE)
241 #define ce_mark_uptodate(ce) ((ce)->ce_flags |= CE_UPTODATE)
243 #define ce_permissions(mode) (((mode) & 0100) ? 0755 : 0644)
244 static inline unsigned int create_ce_mode(unsigned int mode
)
248 if (S_ISDIR(mode
) || S_ISGITLINK(mode
))
250 return S_IFREG
| ce_permissions(mode
);
252 static inline unsigned int ce_mode_from_stat(const struct cache_entry
*ce
,
255 extern int trust_executable_bit
, has_symlinks
;
256 if (!has_symlinks
&& S_ISREG(mode
) &&
257 ce
&& S_ISLNK(ce
->ce_mode
))
259 if (!trust_executable_bit
&& S_ISREG(mode
)) {
260 if (ce
&& S_ISREG(ce
->ce_mode
))
262 return create_ce_mode(0666);
264 return create_ce_mode(mode
);
266 static inline int ce_to_dtype(const struct cache_entry
*ce
)
268 unsigned ce_mode
= ntohl(ce
->ce_mode
);
269 if (S_ISREG(ce_mode
))
271 else if (S_ISDIR(ce_mode
) || S_ISGITLINK(ce_mode
))
273 else if (S_ISLNK(ce_mode
))
278 static inline unsigned int canon_mode(unsigned int mode
)
281 return S_IFREG
| ce_permissions(mode
);
289 #define cache_entry_size(len) (offsetof(struct cache_entry,name) + (len) + 1)
291 #define SOMETHING_CHANGED (1 << 0) /* unclassified changes go here */
292 #define CE_ENTRY_CHANGED (1 << 1)
293 #define CE_ENTRY_REMOVED (1 << 2)
294 #define CE_ENTRY_ADDED (1 << 3)
295 #define RESOLVE_UNDO_CHANGED (1 << 4)
296 #define CACHE_TREE_CHANGED (1 << 5)
297 #define SPLIT_INDEX_ORDERED (1 << 6)
301 struct cache_entry
**cache
;
302 unsigned int version
;
303 unsigned int cache_nr
, cache_alloc
, cache_changed
;
304 struct string_list
*resolve_undo
;
305 struct cache_tree
*cache_tree
;
306 struct split_index
*split_index
;
307 struct cache_time timestamp
;
308 unsigned name_hash_initialized
: 1,
310 struct hashmap name_hash
;
311 struct hashmap dir_hash
;
312 unsigned char sha1
[20];
315 extern struct index_state the_index
;
318 extern void add_name_hash(struct index_state
*istate
, struct cache_entry
*ce
);
319 extern void remove_name_hash(struct index_state
*istate
, struct cache_entry
*ce
);
320 extern void free_name_hash(struct index_state
*istate
);
323 #ifndef NO_THE_INDEX_COMPATIBILITY_MACROS
324 #define active_cache (the_index.cache)
325 #define active_nr (the_index.cache_nr)
326 #define active_alloc (the_index.cache_alloc)
327 #define active_cache_changed (the_index.cache_changed)
328 #define active_cache_tree (the_index.cache_tree)
330 #define read_cache() read_index(&the_index)
331 #define read_cache_from(path) read_index_from(&the_index, (path))
332 #define read_cache_preload(pathspec) read_index_preload(&the_index, (pathspec))
333 #define is_cache_unborn() is_index_unborn(&the_index)
334 #define read_cache_unmerged() read_index_unmerged(&the_index)
335 #define discard_cache() discard_index(&the_index)
336 #define unmerged_cache() unmerged_index(&the_index)
337 #define cache_name_pos(name, namelen) index_name_pos(&the_index,(name),(namelen))
338 #define add_cache_entry(ce, option) add_index_entry(&the_index, (ce), (option))
339 #define rename_cache_entry_at(pos, new_name) rename_index_entry_at(&the_index, (pos), (new_name))
340 #define remove_cache_entry_at(pos) remove_index_entry_at(&the_index, (pos))
341 #define remove_file_from_cache(path) remove_file_from_index(&the_index, (path))
342 #define add_to_cache(path, st, flags) add_to_index(&the_index, (path), (st), (flags))
343 #define add_file_to_cache(path, flags) add_file_to_index(&the_index, (path), (flags))
344 #define refresh_cache(flags) refresh_index(&the_index, (flags), NULL, NULL, NULL)
345 #define ce_match_stat(ce, st, options) ie_match_stat(&the_index, (ce), (st), (options))
346 #define ce_modified(ce, st, options) ie_modified(&the_index, (ce), (st), (options))
347 #define cache_dir_exists(name, namelen) index_dir_exists(&the_index, (name), (namelen))
348 #define cache_file_exists(name, namelen, igncase) index_file_exists(&the_index, (name), (namelen), (igncase))
349 #define cache_name_is_other(name, namelen) index_name_is_other(&the_index, (name), (namelen))
350 #define resolve_undo_clear() resolve_undo_clear_index(&the_index)
351 #define unmerge_cache_entry_at(at) unmerge_index_entry_at(&the_index, at)
352 #define unmerge_cache(pathspec) unmerge_index(&the_index, pathspec)
353 #define read_blob_data_from_cache(path, sz) read_blob_data_from_index(&the_index, (path), (sz))
363 /* 5 for future expansion */
370 static inline enum object_type
object_type(unsigned int mode
)
372 return S_ISDIR(mode
) ? OBJ_TREE
:
373 S_ISGITLINK(mode
) ? OBJ_COMMIT
:
377 /* Double-check local_repo_env below if you add to this list. */
378 #define GIT_DIR_ENVIRONMENT "GIT_DIR"
379 #define GIT_NAMESPACE_ENVIRONMENT "GIT_NAMESPACE"
380 #define GIT_WORK_TREE_ENVIRONMENT "GIT_WORK_TREE"
381 #define GIT_PREFIX_ENVIRONMENT "GIT_PREFIX"
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 GIT_SHALLOW_FILE_ENVIRONMENT "GIT_SHALLOW_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"
401 #define GIT_LITERAL_PATHSPECS_ENVIRONMENT "GIT_LITERAL_PATHSPECS"
402 #define GIT_GLOB_PATHSPECS_ENVIRONMENT "GIT_GLOB_PATHSPECS"
403 #define GIT_NOGLOB_PATHSPECS_ENVIRONMENT "GIT_NOGLOB_PATHSPECS"
404 #define GIT_ICASE_PATHSPECS_ENVIRONMENT "GIT_ICASE_PATHSPECS"
407 * This environment variable is expected to contain a boolean indicating
408 * whether we should or should not treat:
410 * GIT_DIR=foo.git git ...
412 * as if GIT_WORK_TREE=. was given. It's not expected that users will make use
413 * of this, but we use it internally to communicate to sub-processes that we
414 * are in a bare repo. If not set, defaults to true.
416 #define GIT_IMPLICIT_WORK_TREE_ENVIRONMENT "GIT_IMPLICIT_WORK_TREE"
419 * Repository-local GIT_* environment variables; these will be cleared
420 * when git spawns a sub-process that runs inside another repository.
421 * The array is NULL-terminated, which makes it easy to pass in the "env"
422 * parameter of a run-command invocation, or to do a simple walk.
424 extern const char * const local_repo_env
[];
426 extern int is_bare_repository_cfg
;
427 extern int is_bare_repository(void);
428 extern int is_inside_git_dir(void);
429 extern char *git_work_tree_cfg
;
430 extern int is_inside_work_tree(void);
431 extern const char *get_git_dir(void);
432 extern int is_git_directory(const char *path
);
433 extern char *get_object_directory(void);
434 extern char *get_index_file(void);
435 extern char *get_graft_file(void);
436 extern int set_git_dir(const char *path
);
437 extern const char *get_git_namespace(void);
438 extern const char *strip_namespace(const char *namespaced_ref
);
439 extern const char *get_git_work_tree(void);
440 extern const char *read_gitfile(const char *path
);
441 extern const char *resolve_gitdir(const char *suspect
);
442 extern void set_git_work_tree(const char *tree
);
444 #define ALTERNATE_DB_ENVIRONMENT "GIT_ALTERNATE_OBJECT_DIRECTORIES"
446 extern const char **get_pathspec(const char *prefix
, const char **pathspec
);
447 extern void setup_work_tree(void);
448 extern const char *setup_git_directory_gently(int *);
449 extern const char *setup_git_directory(void);
450 extern char *prefix_path(const char *prefix
, int len
, const char *path
);
451 extern char *prefix_path_gently(const char *prefix
, int len
, int *remaining
, const char *path
);
452 extern const char *prefix_filename(const char *prefix
, int len
, const char *path
);
453 extern int check_filename(const char *prefix
, const char *name
);
454 extern void verify_filename(const char *prefix
,
456 int diagnose_misspelt_rev
);
457 extern void verify_non_filename(const char *prefix
, const char *name
);
458 extern int path_inside_repo(const char *prefix
, const char *path
);
460 #define INIT_DB_QUIET 0x0001
462 extern int set_git_dir_init(const char *git_dir
, const char *real_git_dir
, int);
463 extern int init_db(const char *template_dir
, unsigned int flags
);
465 extern void sanitize_stdfds(void);
466 extern int daemonize(void);
468 #define alloc_nr(x) (((x)+16)*3/2)
471 * Realloc the buffer pointed at by variable 'x' so that it can hold
472 * at least 'nr' entries; the number of entries currently allocated
473 * is 'alloc', using the standard growing factor alloc_nr() macro.
475 * DO NOT USE any expression with side-effect for 'x', 'nr', or 'alloc'.
477 #define ALLOC_GROW(x, nr, alloc) \
479 if ((nr) > alloc) { \
480 if (alloc_nr(alloc) < (nr)) \
483 alloc = alloc_nr(alloc); \
484 x = xrealloc((x), alloc * sizeof(*(x))); \
488 /* Initialize and use the cache information */
490 extern int read_index(struct index_state
*);
491 extern int read_index_preload(struct index_state
*, const struct pathspec
*pathspec
);
492 extern int do_read_index(struct index_state
*istate
, const char *path
,
493 int must_exist
); /* for testting only! */
494 extern int read_index_from(struct index_state
*, const char *path
);
495 extern int is_index_unborn(struct index_state
*);
496 extern int read_index_unmerged(struct index_state
*);
497 #define COMMIT_LOCK (1 << 0)
498 #define CLOSE_LOCK (1 << 1)
499 extern int write_locked_index(struct index_state
*, struct lock_file
*lock
, unsigned flags
);
500 extern int discard_index(struct index_state
*);
501 extern int unmerged_index(const struct index_state
*);
502 extern int verify_path(const char *path
);
503 extern struct cache_entry
*index_dir_exists(struct index_state
*istate
, const char *name
, int namelen
);
504 extern struct cache_entry
*index_file_exists(struct index_state
*istate
, const char *name
, int namelen
, int igncase
);
505 extern int index_name_pos(const struct index_state
*, const char *name
, int namelen
);
506 #define ADD_CACHE_OK_TO_ADD 1 /* Ok to add */
507 #define ADD_CACHE_OK_TO_REPLACE 2 /* Ok to replace file/directory */
508 #define ADD_CACHE_SKIP_DFCHECK 4 /* Ok to skip DF conflict checks */
509 #define ADD_CACHE_JUST_APPEND 8 /* Append only; tree.c::read_tree() */
510 #define ADD_CACHE_NEW_ONLY 16 /* Do not replace existing ones */
511 #define ADD_CACHE_KEEP_CACHE_TREE 32 /* Do not invalidate cache-tree */
512 extern int add_index_entry(struct index_state
*, struct cache_entry
*ce
, int option
);
513 extern void rename_index_entry_at(struct index_state
*, int pos
, const char *new_name
);
514 extern int remove_index_entry_at(struct index_state
*, int pos
);
515 extern void remove_marked_cache_entries(struct index_state
*istate
);
516 extern int remove_file_from_index(struct index_state
*, const char *path
);
517 #define ADD_CACHE_VERBOSE 1
518 #define ADD_CACHE_PRETEND 2
519 #define ADD_CACHE_IGNORE_ERRORS 4
520 #define ADD_CACHE_IGNORE_REMOVAL 8
521 #define ADD_CACHE_INTENT 16
522 extern int add_to_index(struct index_state
*, const char *path
, struct stat
*, int flags
);
523 extern int add_file_to_index(struct index_state
*, const char *path
, int flags
);
524 extern struct cache_entry
*make_cache_entry(unsigned int mode
, const unsigned char *sha1
, const char *path
, int stage
, unsigned int refresh_options
);
525 extern int ce_same_name(const struct cache_entry
*a
, const struct cache_entry
*b
);
526 extern void set_object_name_for_intent_to_add_entry(struct cache_entry
*ce
);
527 extern int index_name_is_other(const struct index_state
*, const char *, int);
528 extern void *read_blob_data_from_index(struct index_state
*, const char *, unsigned long *);
530 /* do stat comparison even if CE_VALID is true */
531 #define CE_MATCH_IGNORE_VALID 01
532 /* do not check the contents but report dirty on racily-clean entries */
533 #define CE_MATCH_RACY_IS_DIRTY 02
534 /* do stat comparison even if CE_SKIP_WORKTREE is true */
535 #define CE_MATCH_IGNORE_SKIP_WORKTREE 04
536 /* ignore non-existent files during stat update */
537 #define CE_MATCH_IGNORE_MISSING 0x08
538 /* enable stat refresh */
539 #define CE_MATCH_REFRESH 0x10
540 extern int ie_match_stat(const struct index_state
*, const struct cache_entry
*, struct stat
*, unsigned int);
541 extern int ie_modified(const struct index_state
*, const struct cache_entry
*, struct stat
*, unsigned int);
543 #define HASH_WRITE_OBJECT 1
544 #define HASH_FORMAT_CHECK 2
545 extern int index_fd(unsigned char *sha1
, int fd
, struct stat
*st
, enum object_type type
, const char *path
, unsigned flags
);
546 extern int index_path(unsigned char *sha1
, const char *path
, struct stat
*st
, unsigned flags
);
549 * Record to sd the data from st that we use to check whether a file
550 * might have changed.
552 extern void fill_stat_data(struct stat_data
*sd
, struct stat
*st
);
555 * Return 0 if st is consistent with a file not having been changed
556 * since sd was filled. If there are differences, return a
557 * combination of MTIME_CHANGED, CTIME_CHANGED, OWNER_CHANGED,
558 * INODE_CHANGED, and DATA_CHANGED.
560 extern int match_stat_data(const struct stat_data
*sd
, struct stat
*st
);
562 extern void fill_stat_cache_info(struct cache_entry
*ce
, struct stat
*st
);
564 #define REFRESH_REALLY 0x0001 /* ignore_valid */
565 #define REFRESH_UNMERGED 0x0002 /* allow unmerged */
566 #define REFRESH_QUIET 0x0004 /* be quiet about it */
567 #define REFRESH_IGNORE_MISSING 0x0008 /* ignore non-existent */
568 #define REFRESH_IGNORE_SUBMODULES 0x0010 /* ignore submodules */
569 #define REFRESH_IN_PORCELAIN 0x0020 /* user friendly output, not "needs update" */
570 extern int refresh_index(struct index_state
*, unsigned int flags
, const struct pathspec
*pathspec
, char *seen
, const char *header_msg
);
573 struct lock_file
*next
;
577 char filename
[PATH_MAX
];
579 #define LOCK_DIE_ON_ERROR 1
580 #define LOCK_NODEREF 2
581 extern int unable_to_lock_error(const char *path
, int err
);
582 extern void unable_to_lock_message(const char *path
, int err
,
584 extern NORETURN
void unable_to_lock_index_die(const char *path
, int err
);
585 extern int hold_lock_file_for_update(struct lock_file
*, const char *path
, int);
586 extern int hold_lock_file_for_append(struct lock_file
*, const char *path
, int);
587 extern int commit_lock_file(struct lock_file
*);
588 extern int reopen_lock_file(struct lock_file
*);
589 extern void update_index_if_able(struct index_state
*, struct lock_file
*);
591 extern int hold_locked_index(struct lock_file
*, int);
592 extern void set_alternate_index_output(const char *);
593 extern int close_lock_file(struct lock_file
*);
594 extern void rollback_lock_file(struct lock_file
*);
595 extern int delete_ref(const char *, const unsigned char *sha1
, int delopt
);
597 /* Environment bits from configuration mechanism */
598 extern int trust_executable_bit
;
599 extern int trust_ctime
;
600 extern int check_stat
;
601 extern int quote_path_fully
;
602 extern int has_symlinks
;
603 extern int minimum_abbrev
, default_abbrev
;
604 extern int ignore_case
;
605 extern int assume_unchanged
;
606 extern int prefer_symlink_refs
;
607 extern int log_all_ref_updates
;
608 extern int warn_ambiguous_refs
;
609 extern int warn_on_object_refname_ambiguity
;
610 extern int shared_repository
;
611 extern const char *apply_default_whitespace
;
612 extern const char *apply_default_ignorewhitespace
;
613 extern const char *git_attributes_file
;
614 extern int zlib_compression_level
;
615 extern int core_compression_level
;
616 extern int core_compression_seen
;
617 extern size_t packed_git_window_size
;
618 extern size_t packed_git_limit
;
619 extern size_t delta_base_cache_limit
;
620 extern unsigned long big_file_threshold
;
621 extern unsigned long pack_size_limit_cfg
;
624 * Do replace refs need to be checked this run? This variable is
625 * initialized to true unless --no-replace-object is used or
626 * $GIT_NO_REPLACE_OBJECTS is set, but is set to false by some
627 * commands that do not want replace references to be active. As an
628 * optimization it is also set to false if replace references have
629 * been sought but there were none.
631 extern int check_replace_refs
;
633 extern int fsync_object_files
;
634 extern int core_preload_index
;
635 extern int core_apply_sparse_checkout
;
636 extern int precomposed_unicode
;
639 * The character that begins a commented line in user-editable file
640 * that is subject to stripspace.
642 extern char comment_line_char
;
643 extern int auto_comment_line_char
;
646 BRANCH_TRACK_UNSPECIFIED
= -1,
647 BRANCH_TRACK_NEVER
= 0,
650 BRANCH_TRACK_EXPLICIT
,
651 BRANCH_TRACK_OVERRIDE
654 enum rebase_setup_type
{
655 AUTOREBASE_NEVER
= 0,
661 enum push_default_type
{
662 PUSH_DEFAULT_NOTHING
= 0,
663 PUSH_DEFAULT_MATCHING
,
665 PUSH_DEFAULT_UPSTREAM
,
666 PUSH_DEFAULT_CURRENT
,
667 PUSH_DEFAULT_UNSPECIFIED
670 extern enum branch_track git_branch_track
;
671 extern enum rebase_setup_type autorebase
;
672 extern enum push_default_type push_default
;
674 enum object_creation_mode
{
675 OBJECT_CREATION_USES_HARDLINKS
= 0,
676 OBJECT_CREATION_USES_RENAMES
= 1
679 extern enum object_creation_mode object_creation_mode
;
681 extern char *notes_ref_name
;
683 extern int grafts_replace_parents
;
685 #define GIT_REPO_VERSION 0
686 extern int repository_format_version
;
687 extern int check_repository_format(void);
689 #define MTIME_CHANGED 0x0001
690 #define CTIME_CHANGED 0x0002
691 #define OWNER_CHANGED 0x0004
692 #define MODE_CHANGED 0x0008
693 #define INODE_CHANGED 0x0010
694 #define DATA_CHANGED 0x0020
695 #define TYPE_CHANGED 0x0040
697 extern char *mksnpath(char *buf
, size_t n
, const char *fmt
, ...)
698 __attribute__((format (printf
, 3, 4)));
699 extern char *git_snpath(char *buf
, size_t n
, const char *fmt
, ...)
700 __attribute__((format (printf
, 3, 4)));
701 extern char *git_pathdup(const char *fmt
, ...)
702 __attribute__((format (printf
, 1, 2)));
703 extern char *mkpathdup(const char *fmt
, ...)
704 __attribute__((format (printf
, 1, 2)));
706 /* Return a statically allocated filename matching the sha1 signature */
707 extern char *mkpath(const char *fmt
, ...) __attribute__((format (printf
, 1, 2)));
708 extern char *git_path(const char *fmt
, ...) __attribute__((format (printf
, 1, 2)));
709 extern char *git_path_submodule(const char *path
, const char *fmt
, ...)
710 __attribute__((format (printf
, 2, 3)));
713 * Return the name of the file in the local object database that would
714 * be used to store a loose object with the specified sha1. The
715 * return value is a pointer to a statically allocated buffer that is
716 * overwritten each time the function is called.
718 extern const char *sha1_file_name(const unsigned char *sha1
);
721 * Return the name of the (local) packfile with the specified sha1 in
722 * its name. The return value is a pointer to memory that is
723 * overwritten each time this function is called.
725 extern char *sha1_pack_name(const unsigned char *sha1
);
728 * Return the name of the (local) pack index file with the specified
729 * sha1 in its name. The return value is a pointer to memory that is
730 * overwritten each time this function is called.
732 extern char *sha1_pack_index_name(const unsigned char *sha1
);
734 extern const char *find_unique_abbrev(const unsigned char *sha1
, int);
735 extern const unsigned char null_sha1
[20];
737 static inline int hashcmp(const unsigned char *sha1
, const unsigned char *sha2
)
741 for (i
= 0; i
< 20; i
++, sha1
++, sha2
++) {
743 return *sha1
- *sha2
;
749 static inline int is_null_sha1(const unsigned char *sha1
)
751 return !hashcmp(sha1
, null_sha1
);
754 static inline void hashcpy(unsigned char *sha_dst
, const unsigned char *sha_src
)
756 memcpy(sha_dst
, sha_src
, 20);
758 static inline void hashclr(unsigned char *hash
)
763 #define EMPTY_TREE_SHA1_HEX \
764 "4b825dc642cb6eb9a060e54bf8d69288fbee4904"
765 #define EMPTY_TREE_SHA1_BIN_LITERAL \
766 "\x4b\x82\x5d\xc6\x42\xcb\x6e\xb9\xa0\x60" \
767 "\xe5\x4b\xf8\xd6\x92\x88\xfb\xee\x49\x04"
768 #define EMPTY_TREE_SHA1_BIN \
769 ((const unsigned char *) EMPTY_TREE_SHA1_BIN_LITERAL)
771 #define EMPTY_BLOB_SHA1_HEX \
772 "e69de29bb2d1d6434b8b29ae775ad8c2e48c5391"
773 #define EMPTY_BLOB_SHA1_BIN_LITERAL \
774 "\xe6\x9d\xe2\x9b\xb2\xd1\xd6\x43\x4b\x8b" \
775 "\x29\xae\x77\x5a\xd8\xc2\xe4\x8c\x53\x91"
776 #define EMPTY_BLOB_SHA1_BIN \
777 ((const unsigned char *) EMPTY_BLOB_SHA1_BIN_LITERAL)
779 static inline int is_empty_blob_sha1(const unsigned char *sha1
)
781 return !hashcmp(sha1
, EMPTY_BLOB_SHA1_BIN
);
784 int git_mkstemp(char *path
, size_t n
, const char *template);
786 int git_mkstemps(char *path
, size_t n
, const char *template, int suffix_len
);
788 /* set default permissions by passing mode arguments to open(2) */
789 int git_mkstemps_mode(char *pattern
, int suffix_len
, int mode
);
790 int git_mkstemp_mode(char *pattern
, int mode
);
795 * PERM_UMASK, OLD_PERM_GROUP and OLD_PERM_EVERYBODY enumerations must
796 * not be changed. Old repositories have core.sharedrepository written in
797 * numeric format, and therefore these values are preserved for compatibility
803 OLD_PERM_EVERYBODY
= 2,
805 PERM_EVERYBODY
= 0664
807 int git_config_perm(const char *var
, const char *value
);
808 int adjust_shared_perm(const char *path
);
811 * Create the directory containing the named path, using care to be
812 * somewhat safe against races. Return one of the scld_error values
813 * to indicate success/failure.
815 * SCLD_VANISHED indicates that one of the ancestor directories of the
816 * path existed at one point during the function call and then
817 * suddenly vanished, probably because another process pruned the
818 * directory while we were working. To be robust against this kind of
819 * race, callers might want to try invoking the function again when it
820 * returns SCLD_VANISHED.
829 enum scld_error
safe_create_leading_directories(char *path
);
830 enum scld_error
safe_create_leading_directories_const(const char *path
);
832 int mkdir_in_gitdir(const char *path
);
833 extern void home_config_paths(char **global
, char **xdg
, char *file
);
834 extern char *expand_user_path(const char *path
);
835 const char *enter_repo(const char *path
, int strict
);
836 static inline int is_absolute_path(const char *path
)
838 return is_dir_sep(path
[0]) || has_dos_drive_prefix(path
);
840 int is_directory(const char *);
841 const char *real_path(const char *path
);
842 const char *real_path_if_valid(const char *path
);
843 const char *absolute_path(const char *path
);
844 const char *remove_leading_path(const char *in
, const char *prefix
);
845 const char *relative_path(const char *in
, const char *prefix
, struct strbuf
*sb
);
846 int normalize_path_copy_len(char *dst
, const char *src
, int *prefix_len
);
847 int normalize_path_copy(char *dst
, const char *src
);
848 int longest_ancestor_length(const char *path
, struct string_list
*prefixes
);
849 char *strip_path_suffix(const char *path
, const char *suffix
);
850 int daemon_avoid_alias(const char *path
);
852 /* object replacement */
853 #define LOOKUP_REPLACE_OBJECT 1
854 extern void *read_sha1_file_extended(const unsigned char *sha1
, enum object_type
*type
, unsigned long *size
, unsigned flag
);
855 static inline void *read_sha1_file(const unsigned char *sha1
, enum object_type
*type
, unsigned long *size
)
857 return read_sha1_file_extended(sha1
, type
, size
, LOOKUP_REPLACE_OBJECT
);
861 * This internal function is only declared here for the benefit of
862 * lookup_replace_object(). Please do not call it directly.
864 extern const unsigned char *do_lookup_replace_object(const unsigned char *sha1
);
867 * If object sha1 should be replaced, return the replacement object's
868 * name (replaced recursively, if necessary). The return value is
869 * either sha1 or a pointer to a permanently-allocated value. When
870 * object replacement is suppressed, always return sha1.
872 static inline const unsigned char *lookup_replace_object(const unsigned char *sha1
)
874 if (!check_replace_refs
)
876 return do_lookup_replace_object(sha1
);
879 static inline const unsigned char *lookup_replace_object_extended(const unsigned char *sha1
, unsigned flag
)
881 if (!(flag
& LOOKUP_REPLACE_OBJECT
))
883 return lookup_replace_object(sha1
);
886 /* Read and unpack a sha1 file into memory, write memory to a sha1 file */
887 extern int sha1_object_info(const unsigned char *, unsigned long *);
888 extern int hash_sha1_file(const void *buf
, unsigned long len
, const char *type
, unsigned char *sha1
);
889 extern int write_sha1_file(const void *buf
, unsigned long len
, const char *type
, unsigned char *return_sha1
);
890 extern int pretend_sha1_file(void *, unsigned long, enum object_type
, unsigned char *);
891 extern int force_object_loose(const unsigned char *sha1
, time_t mtime
);
892 extern int git_open_noatime(const char *name
);
893 extern void *map_sha1_file(const unsigned char *sha1
, unsigned long *size
);
894 extern int unpack_sha1_header(git_zstream
*stream
, unsigned char *map
, unsigned long mapsize
, void *buffer
, unsigned long bufsiz
);
895 extern int parse_sha1_header(const char *hdr
, unsigned long *sizep
);
897 /* global flag to enable extra checks when accessing packed objects */
898 extern int do_check_packed_object_crc
;
900 extern int check_sha1_signature(const unsigned char *sha1
, void *buf
, unsigned long size
, const char *type
);
902 extern int move_temp_to_file(const char *tmpfile
, const char *filename
);
904 extern int has_sha1_pack(const unsigned char *sha1
);
907 * Return true iff we have an object named sha1, whether local or in
908 * an alternate object database, and whether packed or loose. This
909 * function does not respect replace references.
911 extern int has_sha1_file(const unsigned char *sha1
);
914 * Return true iff an alternate object database has a loose object
915 * with the specified name. This function does not respect replace
918 extern int has_loose_object_nonlocal(const unsigned char *sha1
);
920 extern int has_pack_index(const unsigned char *sha1
);
922 extern void assert_sha1_type(const unsigned char *sha1
, enum object_type expect
);
924 extern const signed char hexval_table
[256];
925 static inline unsigned int hexval(unsigned char c
)
927 return hexval_table
[c
];
930 /* Convert to/from hex/sha1 representation */
931 #define MINIMUM_ABBREV minimum_abbrev
932 #define DEFAULT_ABBREV default_abbrev
934 struct object_context
{
935 unsigned char tree
[20];
940 #define GET_SHA1_QUIETLY 01
941 #define GET_SHA1_COMMIT 02
942 #define GET_SHA1_COMMITTISH 04
943 #define GET_SHA1_TREE 010
944 #define GET_SHA1_TREEISH 020
945 #define GET_SHA1_BLOB 040
946 #define GET_SHA1_ONLY_TO_DIE 04000
948 extern int get_sha1(const char *str
, unsigned char *sha1
);
949 extern int get_sha1_commit(const char *str
, unsigned char *sha1
);
950 extern int get_sha1_committish(const char *str
, unsigned char *sha1
);
951 extern int get_sha1_tree(const char *str
, unsigned char *sha1
);
952 extern int get_sha1_treeish(const char *str
, unsigned char *sha1
);
953 extern int get_sha1_blob(const char *str
, unsigned char *sha1
);
954 extern void maybe_die_on_misspelt_object_name(const char *name
, const char *prefix
);
955 extern int get_sha1_with_context(const char *str
, unsigned flags
, unsigned char *sha1
, struct object_context
*orc
);
957 typedef int each_abbrev_fn(const unsigned char *sha1
, void *);
958 extern int for_each_abbrev(const char *prefix
, each_abbrev_fn
, void *);
961 * Try to read a SHA1 in hexadecimal format from the 40 characters
962 * starting at hex. Write the 20-byte result to sha1 in binary form.
963 * Return 0 on success. Reading stops if a NUL is encountered in the
964 * input, so it is safe to pass this function an arbitrary
965 * null-terminated string.
967 extern int get_sha1_hex(const char *hex
, unsigned char *sha1
);
969 extern char *sha1_to_hex(const unsigned char *sha1
); /* static buffer result! */
970 extern int read_ref_full(const char *refname
, unsigned char *sha1
,
971 int reading
, int *flags
);
972 extern int read_ref(const char *refname
, unsigned char *sha1
);
975 * Resolve a reference, recursively following symbolic refererences.
977 * Store the referred-to object's name in sha1 and return the name of
978 * the non-symbolic reference that ultimately pointed at it. The
979 * return value, if not NULL, is a pointer into either a static buffer
982 * If the reference cannot be resolved to an object, the behavior
983 * depends on the "reading" argument:
985 * - If reading is set, return NULL.
987 * - If reading is not set, clear sha1 and return the name of the last
988 * reference name in the chain, which will either be a non-symbolic
989 * reference or an undefined reference. If this is a prelude to
990 * "writing" to the ref, the return value is the name of the ref
991 * that will actually be created or changed.
993 * If flag is non-NULL, set the value that it points to the
994 * combination of REF_ISPACKED (if the reference was found among the
995 * packed references) and REF_ISSYMREF (if the initial reference was a
996 * symbolic reference).
998 * If ref is not a properly-formatted, normalized reference, return
999 * NULL. If more than MAXDEPTH recursive symbolic lookups are needed,
1000 * give up and return NULL.
1002 * errno is set to something meaningful on error.
1004 extern const char *resolve_ref_unsafe(const char *ref
, unsigned char *sha1
, int reading
, int *flag
);
1005 extern char *resolve_refdup(const char *ref
, unsigned char *sha1
, int reading
, int *flag
);
1007 extern int dwim_ref(const char *str
, int len
, unsigned char *sha1
, char **ref
);
1008 extern int dwim_log(const char *str
, int len
, unsigned char *sha1
, char **ref
);
1009 extern int interpret_branch_name(const char *str
, int len
, struct strbuf
*);
1010 extern int get_sha1_mb(const char *str
, unsigned char *sha1
);
1013 * Return true iff abbrev_name is a possible abbreviation for
1014 * full_name according to the rules defined by ref_rev_parse_rules in
1017 extern int refname_match(const char *abbrev_name
, const char *full_name
);
1019 extern int create_symref(const char *ref
, const char *refs_heads_master
, const char *logmsg
);
1020 extern int validate_headref(const char *ref
);
1022 extern int base_name_compare(const char *name1
, int len1
, int mode1
, const char *name2
, int len2
, int mode2
);
1023 extern int df_name_compare(const char *name1
, int len1
, int mode1
, const char *name2
, int len2
, int mode2
);
1024 extern int name_compare(const char *name1
, size_t len1
, const char *name2
, size_t len2
);
1025 extern int cache_name_stage_compare(const char *name1
, int len1
, int stage1
, const char *name2
, int len2
, int stage2
);
1027 extern void *read_object_with_reference(const unsigned char *sha1
,
1028 const char *required_type
,
1029 unsigned long *size
,
1030 unsigned char *sha1_ret
);
1032 extern struct object
*peel_to_type(const char *name
, int namelen
,
1033 struct object
*o
, enum object_type
);
1045 const char *show_date(unsigned long time
, int timezone
, enum date_mode mode
);
1046 void show_date_relative(unsigned long time
, int tz
, const struct timeval
*now
,
1047 struct strbuf
*timebuf
);
1048 int parse_date(const char *date
, char *buf
, int bufsize
);
1049 int parse_date_basic(const char *date
, unsigned long *timestamp
, int *offset
);
1050 int parse_expiry_date(const char *date
, unsigned long *timestamp
);
1051 void datestamp(char *buf
, int bufsize
);
1052 #define approxidate(s) approxidate_careful((s), NULL)
1053 unsigned long approxidate_careful(const char *, int *);
1054 unsigned long approxidate_relative(const char *date
, const struct timeval
*now
);
1055 enum date_mode
parse_date_format(const char *format
);
1056 int date_overflows(unsigned long date
);
1058 #define IDENT_STRICT 1
1059 #define IDENT_NO_DATE 2
1060 #define IDENT_NO_NAME 4
1061 extern const char *git_author_info(int);
1062 extern const char *git_committer_info(int);
1063 extern const char *fmt_ident(const char *name
, const char *email
, const char *date_str
, int);
1064 extern const char *fmt_name(const char *name
, const char *email
);
1065 extern const char *ident_default_name(void);
1066 extern const char *ident_default_email(void);
1067 extern const char *git_editor(void);
1068 extern const char *git_pager(int stdout_is_tty
);
1069 extern int git_ident_config(const char *, const char *, void *);
1071 struct ident_split
{
1072 const char *name_begin
;
1073 const char *name_end
;
1074 const char *mail_begin
;
1075 const char *mail_end
;
1076 const char *date_begin
;
1077 const char *date_end
;
1078 const char *tz_begin
;
1082 * Signals an success with 0, but time part of the result may be NULL
1083 * if the input lacks timestamp and zone
1085 extern int split_ident_line(struct ident_split
*, const char *, int);
1088 * Like show_date, but pull the timestamp and tz parameters from
1089 * the ident_split. It will also sanity-check the values and produce
1090 * a well-known sentinel date if they appear bogus.
1092 const char *show_ident_date(const struct ident_split
*id
, enum date_mode mode
);
1095 * Compare split idents for equality or strict ordering. Note that we
1096 * compare only the ident part of the line, ignoring any timestamp.
1098 * Because there are two fields, we must choose one as the primary key; we
1099 * currently arbitrarily pick the email.
1101 extern int ident_cmp(const struct ident_split
*, const struct ident_split
*);
1104 struct index_state
*istate
;
1105 const char *base_dir
;
1113 #define TEMPORARY_FILENAME_LENGTH 25
1114 extern int checkout_entry(struct cache_entry
*ce
, const struct checkout
*state
, char *topath
);
1120 int prefix_len_stat_func
;
1122 #define CACHE_DEF_INIT { STRBUF_INIT, 0, 0, 0 }
1123 static inline void cache_def_clear(struct cache_def
*cache
)
1125 strbuf_release(&cache
->path
);
1128 extern int has_symlink_leading_path(const char *name
, int len
);
1129 extern int threaded_has_symlink_leading_path(struct cache_def
*, const char *, int);
1130 extern int check_leading_path(const char *name
, int len
);
1131 extern int has_dirs_only_path(const char *name
, int len
, int prefix_len
);
1132 extern void schedule_dir_for_removal(const char *name
, int len
);
1133 extern void remove_scheduled_dirs(void);
1135 extern struct alternate_object_database
{
1136 struct alternate_object_database
*next
;
1138 char base
[FLEX_ARRAY
]; /* more */
1140 extern void prepare_alt_odb(void);
1141 extern void read_info_alternates(const char * relative_base
, int depth
);
1142 extern void add_to_alternates_file(const char *reference
);
1143 typedef int alt_odb_fn(struct alternate_object_database
*, void *);
1144 extern void foreach_alt_odb(alt_odb_fn
, void*);
1146 struct pack_window
{
1147 struct pack_window
*next
;
1148 unsigned char *base
;
1151 unsigned int last_used
;
1152 unsigned int inuse_cnt
;
1155 extern struct packed_git
{
1156 struct packed_git
*next
;
1157 struct pack_window
*windows
;
1159 const void *index_data
;
1161 uint32_t num_objects
;
1162 uint32_t num_bad_objects
;
1163 unsigned char *bad_object_sha1
;
1167 unsigned pack_local
:1,
1170 unsigned char sha1
[20];
1171 /* something like ".git/objects/pack/xxxxx.pack" */
1172 char pack_name
[FLEX_ARRAY
]; /* more */
1177 unsigned char sha1
[20];
1178 struct packed_git
*p
;
1181 extern struct packed_git
*parse_pack_index(unsigned char *sha1
, const char *idx_path
);
1183 /* A hook for count-objects to report invalid files in pack directory */
1184 extern void (*report_garbage
)(const char *desc
, const char *path
);
1186 extern void prepare_packed_git(void);
1187 extern void reprepare_packed_git(void);
1188 extern void install_packed_git(struct packed_git
*pack
);
1190 extern struct packed_git
*find_sha1_pack(const unsigned char *sha1
,
1191 struct packed_git
*packs
);
1193 extern void pack_report(void);
1196 * mmap the index file for the specified packfile (if it is not
1197 * already mmapped). Return 0 on success.
1199 extern int open_pack_index(struct packed_git
*);
1202 * munmap the index file for the specified packfile (if it is
1203 * currently mmapped).
1205 extern void close_pack_index(struct packed_git
*);
1207 extern unsigned char *use_pack(struct packed_git
*, struct pack_window
**, off_t
, unsigned long *);
1208 extern void close_pack_windows(struct packed_git
*);
1209 extern void unuse_pack(struct pack_window
**);
1210 extern void free_pack_by_name(const char *);
1211 extern void clear_delta_base_cache(void);
1212 extern struct packed_git
*add_packed_git(const char *, int, int);
1215 * Return the SHA-1 of the nth object within the specified packfile.
1216 * Open the index if it is not already open. The return value points
1217 * at the SHA-1 within the mmapped index. Return NULL if there is an
1220 extern const unsigned char *nth_packed_object_sha1(struct packed_git
*, uint32_t n
);
1223 * Return the offset of the nth object within the specified packfile.
1224 * The index must already be opened.
1226 extern off_t
nth_packed_object_offset(const struct packed_git
*, uint32_t n
);
1229 * If the object named sha1 is present in the specified packfile,
1230 * return its offset within the packfile; otherwise, return 0.
1232 extern off_t
find_pack_entry_one(const unsigned char *sha1
, struct packed_git
*);
1234 extern int is_pack_valid(struct packed_git
*);
1235 extern void *unpack_entry(struct packed_git
*, off_t
, enum object_type
*, unsigned long *);
1236 extern unsigned long unpack_object_header_buffer(const unsigned char *buf
, unsigned long len
, enum object_type
*type
, unsigned long *sizep
);
1237 extern unsigned long get_size_from_delta(struct packed_git
*, struct pack_window
**, off_t
);
1238 extern int unpack_object_header(struct packed_git
*, struct pack_window
**, off_t
*, unsigned long *);
1240 struct object_info
{
1242 enum object_type
*typep
;
1243 unsigned long *sizep
;
1244 unsigned long *disk_sizep
;
1245 unsigned char *delta_base_sha1
;
1257 * ... Nothing to expose in this case
1260 * ... Nothing to expose in this case
1264 struct packed_git
*pack
;
1266 unsigned int is_delta
;
1270 extern int sha1_object_info_extended(const unsigned char *, struct object_info
*, unsigned flags
);
1272 /* Dumb servers support */
1273 extern int update_server_info(int);
1275 /* git_config_parse_key() returns these negated: */
1276 #define CONFIG_INVALID_KEY 1
1277 #define CONFIG_NO_SECTION_OR_NAME 2
1278 /* git_config_set(), git_config_set_multivar() return the above or these: */
1279 #define CONFIG_NO_LOCK -1
1280 #define CONFIG_INVALID_FILE 3
1281 #define CONFIG_NO_WRITE 4
1282 #define CONFIG_NOTHING_SET 5
1283 #define CONFIG_INVALID_PATTERN 6
1284 #define CONFIG_GENERIC_ERROR 7
1286 struct git_config_source
{
1287 unsigned int use_stdin
:1;
1292 typedef int (*config_fn_t
)(const char *, const char *, void *);
1293 extern int git_default_config(const char *, const char *, void *);
1294 extern int git_config_from_file(config_fn_t fn
, const char *, void *);
1295 extern int git_config_from_buf(config_fn_t fn
, const char *name
,
1296 const char *buf
, size_t len
, void *data
);
1297 extern void git_config_push_parameter(const char *text
);
1298 extern int git_config_from_parameters(config_fn_t fn
, void *data
);
1299 extern int git_config(config_fn_t fn
, void *);
1300 extern int git_config_with_options(config_fn_t fn
, void *,
1301 struct git_config_source
*config_source
,
1302 int respect_includes
);
1303 extern int git_config_early(config_fn_t fn
, void *, const char *repo_config
);
1304 extern int git_parse_ulong(const char *, unsigned long *);
1305 extern int git_config_int(const char *, const char *);
1306 extern int64_t git_config_int64(const char *, const char *);
1307 extern unsigned long git_config_ulong(const char *, const char *);
1308 extern int git_config_bool_or_int(const char *, const char *, int *);
1309 extern int git_config_bool(const char *, const char *);
1310 extern int git_config_maybe_bool(const char *, const char *);
1311 extern int git_config_string(const char **, const char *, const char *);
1312 extern int git_config_pathname(const char **, const char *, const char *);
1313 extern int git_config_set_in_file(const char *, const char *, const char *);
1314 extern int git_config_set(const char *, const char *);
1315 extern int git_config_parse_key(const char *, char **, int *);
1316 extern int git_config_set_multivar(const char *, const char *, const char *, int);
1317 extern int git_config_set_multivar_in_file(const char *, const char *, const char *, const char *, int);
1318 extern int git_config_rename_section(const char *, const char *);
1319 extern int git_config_rename_section_in_file(const char *, const char *, const char *);
1320 extern const char *git_etc_gitconfig(void);
1321 extern int check_repository_format_version(const char *var
, const char *value
, void *cb
);
1322 extern int git_env_bool(const char *, int);
1323 extern int git_config_system(void);
1324 extern int config_error_nonbool(const char *);
1325 #if defined(__GNUC__)
1326 #define config_error_nonbool(s) (config_error_nonbool(s), const_error())
1328 extern const char *get_log_output_encoding(void);
1329 extern const char *get_commit_output_encoding(void);
1331 extern int git_config_parse_parameter(const char *, config_fn_t fn
, void *data
);
1333 struct config_include_data
{
1338 #define CONFIG_INCLUDE_INIT { 0 }
1339 extern int git_config_include(const char *name
, const char *value
, void *data
);
1342 * Match and parse a config key of the form:
1344 * section.(subsection.)?key
1346 * (i.e., what gets handed to a config_fn_t). The caller provides the section;
1347 * we return -1 if it does not match, 0 otherwise. The subsection and key
1348 * out-parameters are filled by the function (and subsection is NULL if it is
1351 extern int parse_config_key(const char *var
,
1352 const char *section
,
1353 const char **subsection
, int *subsection_len
,
1357 struct hashmap config_hash
;
1358 int hash_initialized
;
1361 extern void git_configset_init(struct config_set
*cs
);
1362 extern int git_configset_add_file(struct config_set
*cs
, const char *filename
);
1363 extern int git_configset_get_value(struct config_set
*cs
, const char *key
, const char **value
);
1364 extern const struct string_list
*git_configset_get_value_multi(struct config_set
*cs
, const char *key
);
1365 extern void git_configset_clear(struct config_set
*cs
);
1366 extern int git_configset_get_string_const(struct config_set
*cs
, const char *key
, const char **dest
);
1367 extern int git_configset_get_string(struct config_set
*cs
, const char *key
, char **dest
);
1368 extern int git_configset_get_int(struct config_set
*cs
, const char *key
, int *dest
);
1369 extern int git_configset_get_ulong(struct config_set
*cs
, const char *key
, unsigned long *dest
);
1370 extern int git_configset_get_bool(struct config_set
*cs
, const char *key
, int *dest
);
1371 extern int git_configset_get_bool_or_int(struct config_set
*cs
, const char *key
, int *is_bool
, int *dest
);
1372 extern int git_configset_get_maybe_bool(struct config_set
*cs
, const char *key
, int *dest
);
1373 extern int git_configset_get_pathname(struct config_set
*cs
, const char *key
, const char **dest
);
1375 extern int git_config_get_value(const char *key
, const char **value
);
1376 extern const struct string_list
*git_config_get_value_multi(const char *key
);
1377 extern void git_config_clear(void);
1378 extern void git_config_iter(config_fn_t fn
, void *data
);
1379 extern int git_config_get_string_const(const char *key
, const char **dest
);
1380 extern int git_config_get_string(const char *key
, char **dest
);
1381 extern int git_config_get_int(const char *key
, int *dest
);
1382 extern int git_config_get_ulong(const char *key
, unsigned long *dest
);
1383 extern int git_config_get_bool(const char *key
, int *dest
);
1384 extern int git_config_get_bool_or_int(const char *key
, int *is_bool
, int *dest
);
1385 extern int git_config_get_maybe_bool(const char *key
, int *dest
);
1386 extern int git_config_get_pathname(const char *key
, const char **dest
);
1388 extern int committer_ident_sufficiently_given(void);
1389 extern int author_ident_sufficiently_given(void);
1391 extern const char *git_commit_encoding
;
1392 extern const char *git_log_output_encoding
;
1393 extern const char *git_mailmap_file
;
1394 extern const char *git_mailmap_blob
;
1396 /* IO helper functions */
1397 extern void maybe_flush_or_die(FILE *, const char *);
1398 __attribute__((format (printf
, 2, 3)))
1399 extern void fprintf_or_die(FILE *, const char *fmt
, ...);
1400 extern int copy_fd(int ifd
, int ofd
);
1401 extern int copy_file(const char *dst
, const char *src
, int mode
);
1402 extern int copy_file_with_time(const char *dst
, const char *src
, int mode
);
1403 extern void write_or_die(int fd
, const void *buf
, size_t count
);
1404 extern int write_or_whine(int fd
, const void *buf
, size_t count
, const char *msg
);
1405 extern int write_or_whine_pipe(int fd
, const void *buf
, size_t count
, const char *msg
);
1406 extern void fsync_or_die(int fd
, const char *);
1408 extern ssize_t
read_in_full(int fd
, void *buf
, size_t count
);
1409 extern ssize_t
write_in_full(int fd
, const void *buf
, size_t count
);
1410 extern ssize_t
pread_in_full(int fd
, void *buf
, size_t count
, off_t offset
);
1412 static inline ssize_t
write_str_in_full(int fd
, const char *str
)
1414 return write_in_full(fd
, str
, strlen(str
));
1418 extern void setup_pager(void);
1419 extern const char *pager_program
;
1420 extern int pager_in_use(void);
1421 extern int pager_use_color
;
1422 extern int term_columns(void);
1423 extern int decimal_width(int);
1424 extern int check_pager_config(const char *cmd
);
1426 extern const char *editor_program
;
1427 extern const char *askpass_program
;
1428 extern const char *excludes_file
;
1431 int decode_85(char *dst
, const char *line
, int linelen
);
1432 void encode_85(char *buf
, const unsigned char *data
, int bytes
);
1435 extern void *alloc_blob_node(void);
1436 extern void *alloc_tree_node(void);
1437 extern void *alloc_commit_node(void);
1438 extern void *alloc_tag_node(void);
1439 extern void *alloc_object_node(void);
1440 extern void alloc_report(void);
1441 extern unsigned int alloc_commit_index(void);
1444 void packet_trace_identity(const char *prog
);
1448 * return 0 if success, 1 - if addition of a file failed and
1449 * ADD_FILES_IGNORE_ERRORS was specified in flags
1451 int add_files_to_cache(const char *prefix
, const struct pathspec
*pathspec
, int flags
);
1454 extern int diff_auto_refresh_index
;
1457 void shift_tree(const unsigned char *, const unsigned char *, unsigned char *, int);
1458 void shift_tree_by(const unsigned char *, const unsigned char *, unsigned char *, const char *);
1462 * used by both diff and apply
1463 * last two digits are tab width
1465 #define WS_BLANK_AT_EOL 0100
1466 #define WS_SPACE_BEFORE_TAB 0200
1467 #define WS_INDENT_WITH_NON_TAB 0400
1468 #define WS_CR_AT_EOL 01000
1469 #define WS_BLANK_AT_EOF 02000
1470 #define WS_TAB_IN_INDENT 04000
1471 #define WS_TRAILING_SPACE (WS_BLANK_AT_EOL|WS_BLANK_AT_EOF)
1472 #define WS_DEFAULT_RULE (WS_TRAILING_SPACE|WS_SPACE_BEFORE_TAB|8)
1473 #define WS_TAB_WIDTH_MASK 077
1474 extern unsigned whitespace_rule_cfg
;
1475 extern unsigned whitespace_rule(const char *);
1476 extern unsigned parse_whitespace_rule(const char *);
1477 extern unsigned ws_check(const char *line
, int len
, unsigned ws_rule
);
1478 extern void ws_check_emit(const char *line
, int len
, unsigned ws_rule
, FILE *stream
, const char *set
, const char *reset
, const char *ws
);
1479 extern char *whitespace_error_string(unsigned ws
);
1480 extern void ws_fix_copy(struct strbuf
*, const char *, int, unsigned, int *);
1481 extern int ws_blank_line(const char *line
, int len
, unsigned ws_rule
);
1482 #define ws_tab_width(rule) ((rule) & WS_TAB_WIDTH_MASK)
1485 int report_path_error(const char *ps_matched
, const struct pathspec
*pathspec
, const char *prefix
);
1486 void overlay_tree_on_cache(const char *tree_name
, const char *prefix
);
1488 char *alias_lookup(const char *alias
);
1489 int split_cmdline(char *cmdline
, const char ***argv
);
1490 /* Takes a negative value returned by split_cmdline */
1491 const char *split_cmdline_strerror(int cmdline_errno
);
1494 struct startup_info
{
1495 int have_repository
;
1498 extern struct startup_info
*startup_info
;
1502 int try_merge_command(const char *strategy
, size_t xopts_nr
,
1503 const char **xopts
, struct commit_list
*common
,
1504 const char *head_arg
, struct commit_list
*remotes
);
1505 int checkout_fast_forward(const unsigned char *from
,
1506 const unsigned char *to
,
1507 int overwrite_ignore
);
1510 int sane_execvp(const char *file
, char *const argv
[]);
1513 * A struct to encapsulate the concept of whether a file has changed
1514 * since we last checked it. This uses criteria similar to those used
1517 struct stat_validity
{
1518 struct stat_data
*sd
;
1521 void stat_validity_clear(struct stat_validity
*sv
);
1524 * Returns 1 if the path is a regular file (or a symlink to a regular
1525 * file) and matches the saved stat_validity, 0 otherwise. A missing
1526 * or inaccessible file is considered a match if the struct was just
1527 * initialized, or if the previous update found an inaccessible file.
1529 int stat_validity_check(struct stat_validity
*sv
, const char *path
);
1532 * Update the stat_validity from a file opened at descriptor fd. If
1533 * the file is missing, inaccessible, or not a regular file, then
1534 * future calls to stat_validity_check will match iff one of those
1535 * conditions continues to be true.
1537 void stat_validity_update(struct stat_validity
*sv
, int fd
);
1539 int versioncmp(const char *s1
, const char *s2
);
1541 #endif /* CACHE_H */