criss cross rename failure workaround
[git/dscho.git] / cache.h
blobd4b9baa399d5f01f21a81bc17c30532bba526770
1 #ifndef CACHE_H
2 #define CACHE_H
4 #include "git-compat-util.h"
5 #include "strbuf.h"
6 #include "hash.h"
7 #include "advice.h"
8 #include "gettext.h"
10 #include SHA1_HEADER
11 #ifndef git_SHA_CTX
12 #define git_SHA_CTX SHA_CTX
13 #define git_SHA1_Init SHA1_Init
14 #define git_SHA1_Update SHA1_Update
15 #define git_SHA1_Final SHA1_Final
16 #endif
18 #include <zlib.h>
19 #if defined(NO_DEFLATE_BOUND) || ZLIB_VERNUM < 0x1200
20 #define deflateBound(c,s) ((s) + (((s) + 7) >> 3) + (((s) + 63) >> 6) + 11)
21 #endif
23 void git_inflate_init(z_streamp strm);
24 void git_inflate_end(z_streamp strm);
25 int git_inflate(z_streamp strm, int flush);
27 #if defined(DT_UNKNOWN) && !defined(NO_D_TYPE_IN_DIRENT)
28 #define DTYPE(de) ((de)->d_type)
29 #else
30 #undef DT_UNKNOWN
31 #undef DT_DIR
32 #undef DT_REG
33 #undef DT_LNK
34 #define DT_UNKNOWN 0
35 #define DT_DIR 1
36 #define DT_REG 2
37 #define DT_LNK 3
38 #define DTYPE(de) DT_UNKNOWN
39 #endif
41 /* unknown mode (impossible combination S_IFIFO|S_IFCHR) */
42 #define S_IFINVALID 0030000
45 * A "directory link" is a link to another git directory.
47 * The value 0160000 is not normally a valid mode, and
48 * also just happens to be S_IFDIR + S_IFLNK
50 * NOTE! We *really* shouldn't depend on the S_IFxxx macros
51 * always having the same values everywhere. We should use
52 * our internal git values for these things, and then we can
53 * translate that to the OS-specific value. It just so
54 * happens that everybody shares the same bit representation
55 * in the UNIX world (and apparently wider too..)
57 #define S_IFGITLINK 0160000
58 #define S_ISGITLINK(m) (((m) & S_IFMT) == S_IFGITLINK)
61 * Intensive research over the course of many years has shown that
62 * port 9418 is totally unused by anything else. Or
64 * Your search - "port 9418" - did not match any documents.
66 * as www.google.com puts it.
68 * This port has been properly assigned for git use by IANA:
69 * git (Assigned-9418) [I06-050728-0001].
71 * git 9418/tcp git pack transfer service
72 * git 9418/udp git pack transfer service
74 * with Linus Torvalds <torvalds@osdl.org> as the point of
75 * contact. September 2005.
77 * See http://www.iana.org/assignments/port-numbers
79 #define DEFAULT_GIT_PORT 9418
82 * Basic data structures for the directory cache
85 #define CACHE_SIGNATURE 0x44495243 /* "DIRC" */
86 struct cache_header {
87 unsigned int hdr_signature;
88 unsigned int hdr_version;
89 unsigned int hdr_entries;
93 * The "cache_time" is just the low 32 bits of the
94 * time. It doesn't matter if it overflows - we only
95 * check it for equality in the 32 bits we save.
97 struct cache_time {
98 unsigned int sec;
99 unsigned int nsec;
103 * dev/ino/uid/gid/size are also just tracked to the low 32 bits
104 * Again - this is just a (very strong in practice) heuristic that
105 * the inode hasn't changed.
107 * We save the fields in big-endian order to allow using the
108 * index file over NFS transparently.
110 struct ondisk_cache_entry {
111 struct cache_time ctime;
112 struct cache_time mtime;
113 unsigned int dev;
114 unsigned int ino;
115 unsigned int mode;
116 unsigned int uid;
117 unsigned int gid;
118 unsigned int size;
119 unsigned char sha1[20];
120 unsigned short flags;
121 char name[FLEX_ARRAY]; /* more */
125 * This struct is used when CE_EXTENDED bit is 1
126 * The struct must match ondisk_cache_entry exactly from
127 * ctime till flags
129 struct ondisk_cache_entry_extended {
130 struct cache_time ctime;
131 struct cache_time mtime;
132 unsigned int dev;
133 unsigned int ino;
134 unsigned int mode;
135 unsigned int uid;
136 unsigned int gid;
137 unsigned int size;
138 unsigned char sha1[20];
139 unsigned short flags;
140 unsigned short flags2;
141 char name[FLEX_ARRAY]; /* more */
144 struct cache_entry {
145 struct cache_time ce_ctime;
146 struct cache_time ce_mtime;
147 unsigned int ce_dev;
148 unsigned int ce_ino;
149 unsigned int ce_mode;
150 unsigned int ce_uid;
151 unsigned int ce_gid;
152 unsigned int ce_size;
153 unsigned int ce_flags;
154 unsigned char sha1[20];
155 struct cache_entry *next;
156 char name[FLEX_ARRAY]; /* more */
159 #define CE_NAMEMASK (0x0fff)
160 #define CE_STAGEMASK (0x3000)
161 #define CE_EXTENDED (0x4000)
162 #define CE_VALID (0x8000)
163 #define CE_STAGESHIFT 12
166 * Range 0xFFFF0000 in ce_flags is divided into
167 * two parts: in-memory flags and on-disk ones.
168 * Flags in CE_EXTENDED_FLAGS will get saved on-disk
169 * if you want to save a new flag, add it in
170 * CE_EXTENDED_FLAGS
172 * In-memory only flags
174 #define CE_UPDATE (1 << 16)
175 #define CE_REMOVE (1 << 17)
176 #define CE_UPTODATE (1 << 18)
177 #define CE_ADDED (1 << 19)
179 #define CE_HASHED (1 << 20)
180 #define CE_UNHASHED (1 << 21)
181 #define CE_WT_REMOVE (1 << 22) /* remove in work directory */
182 #define CE_CONFLICTED (1 << 23)
184 #define CE_UNPACKED (1 << 24)
185 #define CE_NEW_SKIP_WORKTREE (1 << 25)
188 * Extended on-disk flags
190 #define CE_INTENT_TO_ADD (1 << 29)
191 #define CE_SKIP_WORKTREE (1 << 30)
192 /* CE_EXTENDED2 is for future extension */
193 #define CE_EXTENDED2 (1 << 31)
195 #define CE_EXTENDED_FLAGS (CE_INTENT_TO_ADD | CE_SKIP_WORKTREE)
198 * Safeguard to avoid saving wrong flags:
199 * - CE_EXTENDED2 won't get saved until its semantic is known
200 * - Bits in 0x0000FFFF have been saved in ce_flags already
201 * - Bits in 0x003F0000 are currently in-memory flags
203 #if CE_EXTENDED_FLAGS & 0x803FFFFF
204 #error "CE_EXTENDED_FLAGS out of range"
205 #endif
208 * Copy the sha1 and stat state of a cache entry from one to
209 * another. But we never change the name, or the hash state!
211 #define CE_STATE_MASK (CE_HASHED | CE_UNHASHED)
212 static inline void copy_cache_entry(struct cache_entry *dst, struct cache_entry *src)
214 unsigned int state = dst->ce_flags & CE_STATE_MASK;
216 /* Don't copy hash chain and name */
217 memcpy(dst, src, offsetof(struct cache_entry, next));
219 /* Restore the hash state */
220 dst->ce_flags = (dst->ce_flags & ~CE_STATE_MASK) | state;
223 static inline unsigned create_ce_flags(size_t len, unsigned stage)
225 if (len >= CE_NAMEMASK)
226 len = CE_NAMEMASK;
227 return (len | (stage << CE_STAGESHIFT));
230 static inline size_t ce_namelen(const struct cache_entry *ce)
232 size_t len = ce->ce_flags & CE_NAMEMASK;
233 if (len < CE_NAMEMASK)
234 return len;
235 return strlen(ce->name + CE_NAMEMASK) + CE_NAMEMASK;
238 #define ce_size(ce) cache_entry_size(ce_namelen(ce))
239 #define ondisk_ce_size(ce) (((ce)->ce_flags & CE_EXTENDED) ? \
240 ondisk_cache_entry_extended_size(ce_namelen(ce)) : \
241 ondisk_cache_entry_size(ce_namelen(ce)))
242 #define ce_stage(ce) ((CE_STAGEMASK & (ce)->ce_flags) >> CE_STAGESHIFT)
243 #define ce_uptodate(ce) ((ce)->ce_flags & CE_UPTODATE)
244 #define ce_skip_worktree(ce) ((ce)->ce_flags & CE_SKIP_WORKTREE)
245 #define ce_mark_uptodate(ce) ((ce)->ce_flags |= CE_UPTODATE)
247 #define ce_permissions(mode) (((mode) & 0100) ? 0755 : 0644)
248 static inline unsigned int create_ce_mode(unsigned int mode)
250 if (S_ISLNK(mode))
251 return S_IFLNK;
252 if (S_ISDIR(mode) || S_ISGITLINK(mode))
253 return S_IFGITLINK;
254 return S_IFREG | ce_permissions(mode);
256 static inline unsigned int ce_mode_from_stat(struct cache_entry *ce, unsigned int mode)
258 extern int trust_executable_bit, has_symlinks;
259 if (!has_symlinks && S_ISREG(mode) &&
260 ce && S_ISLNK(ce->ce_mode))
261 return ce->ce_mode;
262 if (!trust_executable_bit && S_ISREG(mode)) {
263 if (ce && S_ISREG(ce->ce_mode))
264 return ce->ce_mode;
265 return create_ce_mode(0666);
267 return create_ce_mode(mode);
269 static inline int ce_to_dtype(const struct cache_entry *ce)
271 unsigned ce_mode = ntohl(ce->ce_mode);
272 if (S_ISREG(ce_mode))
273 return DT_REG;
274 else if (S_ISDIR(ce_mode) || S_ISGITLINK(ce_mode))
275 return DT_DIR;
276 else if (S_ISLNK(ce_mode))
277 return DT_LNK;
278 else
279 return DT_UNKNOWN;
281 static inline unsigned int canon_mode(unsigned int mode)
283 if (S_ISREG(mode))
284 return S_IFREG | ce_permissions(mode);
285 if (S_ISLNK(mode))
286 return S_IFLNK;
287 if (S_ISDIR(mode))
288 return S_IFDIR;
289 return S_IFGITLINK;
292 #define flexible_size(STRUCT,len) ((offsetof(struct STRUCT,name) + (len) + 8) & ~7)
293 #define cache_entry_size(len) flexible_size(cache_entry,len)
294 #define ondisk_cache_entry_size(len) flexible_size(ondisk_cache_entry,len)
295 #define ondisk_cache_entry_extended_size(len) flexible_size(ondisk_cache_entry_extended,len)
297 struct index_state {
298 struct cache_entry **cache;
299 unsigned int cache_nr, cache_alloc, cache_changed;
300 struct string_list *resolve_undo;
301 struct cache_tree *cache_tree;
302 struct cache_time timestamp;
303 void *alloc;
304 unsigned name_hash_initialized : 1,
305 initialized : 1;
306 struct hash_table name_hash;
309 extern struct index_state the_index;
311 /* Name hashing */
312 extern void add_name_hash(struct index_state *istate, struct cache_entry *ce);
314 * We don't actually *remove* it, we can just mark it invalid so that
315 * we won't find it in lookups.
317 * Not only would we have to search the lists (simple enough), but
318 * we'd also have to rehash other hash buckets in case this makes the
319 * hash bucket empty (common). So it's much better to just mark
320 * it.
322 static inline void remove_name_hash(struct cache_entry *ce)
324 ce->ce_flags |= CE_UNHASHED;
328 #ifndef NO_THE_INDEX_COMPATIBILITY_MACROS
329 #define active_cache (the_index.cache)
330 #define active_nr (the_index.cache_nr)
331 #define active_alloc (the_index.cache_alloc)
332 #define active_cache_changed (the_index.cache_changed)
333 #define active_cache_tree (the_index.cache_tree)
335 #define read_cache() read_index(&the_index)
336 #define read_cache_from(path) read_index_from(&the_index, (path))
337 #define read_cache_preload(pathspec) read_index_preload(&the_index, (pathspec))
338 #define is_cache_unborn() is_index_unborn(&the_index)
339 #define read_cache_unmerged() read_index_unmerged(&the_index)
340 #define write_cache(newfd, cache, entries) write_index(&the_index, (newfd))
341 #define discard_cache() discard_index(&the_index)
342 #define unmerged_cache() unmerged_index(&the_index)
343 #define cache_name_pos(name, namelen) index_name_pos(&the_index,(name),(namelen))
344 #define add_cache_entry(ce, option) add_index_entry(&the_index, (ce), (option))
345 #define rename_cache_entry_at(pos, new_name) rename_index_entry_at(&the_index, (pos), (new_name))
346 #define remove_cache_entry_at(pos) remove_index_entry_at(&the_index, (pos))
347 #define remove_file_from_cache(path) remove_file_from_index(&the_index, (path))
348 #define add_to_cache(path, st, flags) add_to_index(&the_index, (path), (st), (flags))
349 #define add_file_to_cache(path, flags) add_file_to_index(&the_index, (path), (flags))
350 #define refresh_cache(flags) refresh_index(&the_index, (flags), NULL, NULL, NULL)
351 #define ce_match_stat(ce, st, options) ie_match_stat(&the_index, (ce), (st), (options))
352 #define ce_modified(ce, st, options) ie_modified(&the_index, (ce), (st), (options))
353 #define cache_name_exists(name, namelen, igncase) index_name_exists(&the_index, (name), (namelen), (igncase))
354 #define cache_name_is_other(name, namelen) index_name_is_other(&the_index, (name), (namelen))
355 #define resolve_undo_clear() resolve_undo_clear_index(&the_index)
356 #define unmerge_cache_entry_at(at) unmerge_index_entry_at(&the_index, at)
357 #define unmerge_cache(pathspec) unmerge_index(&the_index, pathspec)
358 #endif
360 enum object_type {
361 OBJ_BAD = -1,
362 OBJ_NONE = 0,
363 OBJ_COMMIT = 1,
364 OBJ_TREE = 2,
365 OBJ_BLOB = 3,
366 OBJ_TAG = 4,
367 /* 5 for future expansion */
368 OBJ_OFS_DELTA = 6,
369 OBJ_REF_DELTA = 7,
370 OBJ_ANY,
371 OBJ_MAX
374 static inline enum object_type object_type(unsigned int mode)
376 return S_ISDIR(mode) ? OBJ_TREE :
377 S_ISGITLINK(mode) ? OBJ_COMMIT :
378 OBJ_BLOB;
381 #define GIT_DIR_ENVIRONMENT "GIT_DIR"
382 #define GIT_WORK_TREE_ENVIRONMENT "GIT_WORK_TREE"
383 #define DEFAULT_GIT_DIR_ENVIRONMENT ".git"
384 #define DB_ENVIRONMENT "GIT_OBJECT_DIRECTORY"
385 #define INDEX_ENVIRONMENT "GIT_INDEX_FILE"
386 #define GRAFT_ENVIRONMENT "GIT_GRAFT_FILE"
387 #define TEMPLATE_DIR_ENVIRONMENT "GIT_TEMPLATE_DIR"
388 #define CONFIG_ENVIRONMENT "GIT_CONFIG"
389 #define CONFIG_DATA_ENVIRONMENT "GIT_CONFIG_PARAMETERS"
390 #define EXEC_PATH_ENVIRONMENT "GIT_EXEC_PATH"
391 #define CEILING_DIRECTORIES_ENVIRONMENT "GIT_CEILING_DIRECTORIES"
392 #define NO_REPLACE_OBJECTS_ENVIRONMENT "GIT_NO_REPLACE_OBJECTS"
393 #define GITATTRIBUTES_FILE ".gitattributes"
394 #define INFOATTRIBUTES_FILE "info/attributes"
395 #define ATTRIBUTE_MACRO_PREFIX "[attr]"
396 #define GIT_NOTES_REF_ENVIRONMENT "GIT_NOTES_REF"
397 #define GIT_NOTES_DEFAULT_REF "refs/notes/commits"
398 #define GIT_NOTES_DISPLAY_REF_ENVIRONMENT "GIT_NOTES_DISPLAY_REF"
399 #define GIT_NOTES_REWRITE_REF_ENVIRONMENT "GIT_NOTES_REWRITE_REF"
400 #define GIT_NOTES_REWRITE_MODE_ENVIRONMENT "GIT_NOTES_REWRITE_MODE"
403 * Repository-local GIT_* environment variables
404 * The array is NULL-terminated to simplify its usage in contexts such
405 * environment creation or simple walk of the list.
406 * The number of non-NULL entries is available as a macro.
408 #define LOCAL_REPO_ENV_SIZE 9
409 extern const char *const local_repo_env[LOCAL_REPO_ENV_SIZE + 1];
411 extern int is_bare_repository_cfg;
412 extern int is_bare_repository(void);
413 extern int is_inside_git_dir(void);
414 extern char *git_work_tree_cfg;
415 extern int is_inside_work_tree(void);
416 extern int have_git_dir(void);
417 extern const char *get_git_dir(void);
418 extern char *get_object_directory(void);
419 extern char *get_index_file(void);
420 extern char *get_graft_file(void);
421 extern int set_git_dir(const char *path);
422 extern const char *get_git_work_tree(void);
423 extern const char *read_gitfile_gently(const char *path);
424 extern void set_git_work_tree(const char *tree);
426 #define ALTERNATE_DB_ENVIRONMENT "GIT_ALTERNATE_OBJECT_DIRECTORIES"
428 extern const char **get_pathspec(const char *prefix, const char **pathspec);
429 extern void setup_work_tree(void);
430 extern const char *setup_git_directory_gently(int *);
431 extern const char *setup_git_directory(void);
432 extern char *prefix_path(const char *prefix, int len, const char *path);
433 extern const char *prefix_filename(const char *prefix, int len, const char *path);
434 extern int check_filename(const char *prefix, const char *name);
435 extern void verify_filename(const char *prefix, const char *name);
436 extern void verify_non_filename(const char *prefix, const char *name);
438 #define INIT_DB_QUIET 0x0001
440 extern int init_db(const char *template_dir, unsigned int flags);
442 #define alloc_nr(x) (((x)+16)*3/2)
445 * Realloc the buffer pointed at by variable 'x' so that it can hold
446 * at least 'nr' entries; the number of entries currently allocated
447 * is 'alloc', using the standard growing factor alloc_nr() macro.
449 * DO NOT USE any expression with side-effect for 'x', 'nr', or 'alloc'.
451 #define ALLOC_GROW(x, nr, alloc) \
452 do { \
453 if ((nr) > alloc) { \
454 if (alloc_nr(alloc) < (nr)) \
455 alloc = (nr); \
456 else \
457 alloc = alloc_nr(alloc); \
458 x = xrealloc((x), alloc * sizeof(*(x))); \
460 } while (0)
462 /* Initialize and use the cache information */
463 extern int read_index(struct index_state *);
464 extern int read_index_preload(struct index_state *, const char **pathspec);
465 extern int read_index_from(struct index_state *, const char *path);
466 extern int is_index_unborn(struct index_state *);
467 extern int read_index_unmerged(struct index_state *);
468 extern int write_index(struct index_state *, int newfd);
469 extern int discard_index(struct index_state *);
470 extern int unmerged_index(const struct index_state *);
471 extern int verify_path(const char *path);
472 extern struct cache_entry *index_name_exists(struct index_state *istate, const char *name, int namelen, int igncase);
473 extern int index_name_pos(const struct index_state *, const char *name, int namelen);
474 #define ADD_CACHE_OK_TO_ADD 1 /* Ok to add */
475 #define ADD_CACHE_OK_TO_REPLACE 2 /* Ok to replace file/directory */
476 #define ADD_CACHE_SKIP_DFCHECK 4 /* Ok to skip DF conflict checks */
477 #define ADD_CACHE_JUST_APPEND 8 /* Append only; tree.c::read_tree() */
478 #define ADD_CACHE_NEW_ONLY 16 /* Do not replace existing ones */
479 extern int add_index_entry(struct index_state *, struct cache_entry *ce, int option);
480 extern void rename_index_entry_at(struct index_state *, int pos, const char *new_name);
481 extern int remove_index_entry_at(struct index_state *, int pos);
482 extern void remove_marked_cache_entries(struct index_state *istate);
483 extern int remove_file_from_index(struct index_state *, const char *path);
484 #define ADD_CACHE_VERBOSE 1
485 #define ADD_CACHE_PRETEND 2
486 #define ADD_CACHE_IGNORE_ERRORS 4
487 #define ADD_CACHE_IGNORE_REMOVAL 8
488 #define ADD_CACHE_INTENT 16
489 extern int add_to_index(struct index_state *, const char *path, struct stat *, int flags);
490 extern int add_file_to_index(struct index_state *, const char *path, int flags);
491 extern struct cache_entry *make_cache_entry(unsigned int mode, const unsigned char *sha1, const char *path, int stage, int refresh);
492 extern int ce_same_name(struct cache_entry *a, struct cache_entry *b);
493 extern int index_name_is_other(const struct index_state *, const char *, int);
495 /* do stat comparison even if CE_VALID is true */
496 #define CE_MATCH_IGNORE_VALID 01
497 /* do not check the contents but report dirty on racily-clean entries */
498 #define CE_MATCH_RACY_IS_DIRTY 02
499 /* do stat comparison even if CE_SKIP_WORKTREE is true */
500 #define CE_MATCH_IGNORE_SKIP_WORKTREE 04
501 extern int ie_match_stat(const struct index_state *, struct cache_entry *, struct stat *, unsigned int);
502 extern int ie_modified(const struct index_state *, struct cache_entry *, struct stat *, unsigned int);
504 struct pathspec {
505 const char **raw; /* get_pathspec() result, not freed by free_pathspec() */
506 int nr;
507 unsigned int has_wildcard:1;
508 unsigned int recursive:1;
509 int max_depth;
510 struct pathspec_item {
511 const char *match;
512 int len;
513 unsigned int has_wildcard:1;
514 } *items;
517 extern int init_pathspec(struct pathspec *, const char **);
518 extern void free_pathspec(struct pathspec *);
519 extern int ce_path_match(const struct cache_entry *ce, const struct pathspec *pathspec);
520 extern int index_fd(unsigned char *sha1, int fd, struct stat *st, int write_object, enum object_type type, const char *path, int format_check);
521 extern int index_path(unsigned char *sha1, const char *path, struct stat *st, int write_object);
522 extern void fill_stat_cache_info(struct cache_entry *ce, struct stat *st);
524 #define REFRESH_REALLY 0x0001 /* ignore_valid */
525 #define REFRESH_UNMERGED 0x0002 /* allow unmerged */
526 #define REFRESH_QUIET 0x0004 /* be quiet about it */
527 #define REFRESH_IGNORE_MISSING 0x0008 /* ignore non-existent */
528 #define REFRESH_IGNORE_SUBMODULES 0x0010 /* ignore submodules */
529 #define REFRESH_IN_PORCELAIN 0x0020 /* user friendly output, not "needs update" */
530 extern int refresh_index(struct index_state *, unsigned int flags, const char **pathspec, char *seen, const char *header_msg);
532 struct lock_file {
533 struct lock_file *next;
534 int fd;
535 pid_t owner;
536 char on_list;
537 char filename[PATH_MAX];
539 #define LOCK_DIE_ON_ERROR 1
540 #define LOCK_NODEREF 2
541 extern int unable_to_lock_error(const char *path, int err);
542 extern NORETURN void unable_to_lock_index_die(const char *path, int err);
543 extern int hold_lock_file_for_update(struct lock_file *, const char *path, int);
544 extern int hold_lock_file_for_append(struct lock_file *, const char *path, int);
545 extern int commit_lock_file(struct lock_file *);
547 extern int hold_locked_index(struct lock_file *, int);
548 extern int commit_locked_index(struct lock_file *);
549 extern void set_alternate_index_output(const char *);
550 extern int close_lock_file(struct lock_file *);
551 extern void rollback_lock_file(struct lock_file *);
552 extern int delete_ref(const char *, const unsigned char *sha1, int delopt);
554 /* Environment bits from configuration mechanism */
555 extern int trust_executable_bit;
556 extern int trust_ctime;
557 extern int quote_path_fully;
558 extern int has_symlinks;
559 extern int minimum_abbrev, default_abbrev;
560 extern int ignore_case;
561 extern int assume_unchanged;
562 extern int prefer_symlink_refs;
563 extern int log_all_ref_updates;
564 extern int warn_ambiguous_refs;
565 extern int shared_repository;
566 extern const char *apply_default_whitespace;
567 extern const char *apply_default_ignorewhitespace;
568 extern int zlib_compression_level;
569 extern int core_compression_level;
570 extern int core_compression_seen;
571 extern size_t packed_git_window_size;
572 extern size_t packed_git_limit;
573 extern size_t delta_base_cache_limit;
574 extern int read_replace_refs;
575 extern int fsync_object_files;
576 extern int core_preload_index;
577 extern int core_apply_sparse_checkout;
579 enum hide_dotfiles_type {
580 HIDE_DOTFILES_FALSE = 0,
581 HIDE_DOTFILES_TRUE,
582 HIDE_DOTFILES_DOTGITONLY,
584 extern enum hide_dotfiles_type hide_dotfiles;
586 enum safe_crlf {
587 SAFE_CRLF_FALSE = 0,
588 SAFE_CRLF_FAIL = 1,
589 SAFE_CRLF_WARN = 2
592 extern enum safe_crlf safe_crlf;
594 enum auto_crlf {
595 AUTO_CRLF_FALSE = 0,
596 AUTO_CRLF_TRUE = 1,
597 AUTO_CRLF_INPUT = -1
600 extern enum auto_crlf auto_crlf;
602 enum eol {
603 EOL_UNSET,
604 EOL_CRLF,
605 EOL_LF,
606 #ifdef NATIVE_CRLF
607 EOL_NATIVE = EOL_CRLF
608 #else
609 EOL_NATIVE = EOL_LF
610 #endif
613 extern enum eol eol;
615 enum branch_track {
616 BRANCH_TRACK_UNSPECIFIED = -1,
617 BRANCH_TRACK_NEVER = 0,
618 BRANCH_TRACK_REMOTE,
619 BRANCH_TRACK_ALWAYS,
620 BRANCH_TRACK_EXPLICIT,
621 BRANCH_TRACK_OVERRIDE
624 enum rebase_setup_type {
625 AUTOREBASE_NEVER = 0,
626 AUTOREBASE_LOCAL,
627 AUTOREBASE_REMOTE,
628 AUTOREBASE_ALWAYS
631 enum push_default_type {
632 PUSH_DEFAULT_NOTHING = 0,
633 PUSH_DEFAULT_MATCHING,
634 PUSH_DEFAULT_UPSTREAM,
635 PUSH_DEFAULT_CURRENT
638 extern enum branch_track git_branch_track;
639 extern enum rebase_setup_type autorebase;
640 extern enum push_default_type push_default;
642 enum object_creation_mode {
643 OBJECT_CREATION_USES_HARDLINKS = 0,
644 OBJECT_CREATION_USES_RENAMES = 1
647 extern enum object_creation_mode object_creation_mode;
649 extern char *notes_ref_name;
651 extern int grafts_replace_parents;
653 #define GIT_REPO_VERSION 0
654 extern int repository_format_version;
655 extern int check_repository_format(void);
657 #define MTIME_CHANGED 0x0001
658 #define CTIME_CHANGED 0x0002
659 #define OWNER_CHANGED 0x0004
660 #define MODE_CHANGED 0x0008
661 #define INODE_CHANGED 0x0010
662 #define DATA_CHANGED 0x0020
663 #define TYPE_CHANGED 0x0040
665 extern char *mksnpath(char *buf, size_t n, const char *fmt, ...)
666 __attribute__((format (printf, 3, 4)));
667 extern char *git_snpath(char *buf, size_t n, const char *fmt, ...)
668 __attribute__((format (printf, 3, 4)));
669 extern char *git_pathdup(const char *fmt, ...)
670 __attribute__((format (printf, 1, 2)));
672 /* Return a statically allocated filename matching the sha1 signature */
673 extern char *mkpath(const char *fmt, ...) __attribute__((format (printf, 1, 2)));
674 extern char *git_path(const char *fmt, ...) __attribute__((format (printf, 1, 2)));
675 extern char *git_path_submodule(const char *path, const char *fmt, ...)
676 __attribute__((format (printf, 2, 3)));
678 extern char *sha1_file_name(const unsigned char *sha1);
679 extern char *sha1_pack_name(const unsigned char *sha1);
680 extern char *sha1_pack_index_name(const unsigned char *sha1);
681 extern const char *find_unique_abbrev(const unsigned char *sha1, int);
682 extern const unsigned char null_sha1[20];
683 static inline int is_null_sha1(const unsigned char *sha1)
685 return !memcmp(sha1, null_sha1, 20);
687 static inline int hashcmp(const unsigned char *sha1, const unsigned char *sha2)
689 return memcmp(sha1, sha2, 20);
691 static inline void hashcpy(unsigned char *sha_dst, const unsigned char *sha_src)
693 memcpy(sha_dst, sha_src, 20);
695 static inline void hashclr(unsigned char *hash)
697 memset(hash, 0, 20);
700 #define EMPTY_TREE_SHA1_HEX \
701 "4b825dc642cb6eb9a060e54bf8d69288fbee4904"
702 #define EMPTY_TREE_SHA1_BIN_LITERAL \
703 "\x4b\x82\x5d\xc6\x42\xcb\x6e\xb9\xa0\x60" \
704 "\xe5\x4b\xf8\xd6\x92\x88\xfb\xee\x49\x04"
705 #define EMPTY_TREE_SHA1_BIN \
706 ((const unsigned char *) EMPTY_TREE_SHA1_BIN_LITERAL)
708 int git_mkstemp(char *path, size_t n, const char *template);
710 int git_mkstemps(char *path, size_t n, const char *template, int suffix_len);
712 /* set default permissions by passing mode arguments to open(2) */
713 int git_mkstemps_mode(char *pattern, int suffix_len, int mode);
714 int git_mkstemp_mode(char *pattern, int mode);
717 * NOTE NOTE NOTE!!
719 * PERM_UMASK, OLD_PERM_GROUP and OLD_PERM_EVERYBODY enumerations must
720 * not be changed. Old repositories have core.sharedrepository written in
721 * numeric format, and therefore these values are preserved for compatibility
722 * reasons.
724 enum sharedrepo {
725 PERM_UMASK = 0,
726 OLD_PERM_GROUP = 1,
727 OLD_PERM_EVERYBODY = 2,
728 PERM_GROUP = 0660,
729 PERM_EVERYBODY = 0664
731 int git_config_perm(const char *var, const char *value);
732 int set_shared_perm(const char *path, int mode);
733 #define adjust_shared_perm(path) set_shared_perm((path), 0)
734 int safe_create_leading_directories(char *path);
735 int safe_create_leading_directories_const(const char *path);
736 extern char *expand_user_path(const char *path);
737 char *enter_repo(char *path, int strict);
738 static inline int is_absolute_path(const char *path)
740 return path[0] == '/' || has_dos_drive_prefix(path);
742 int is_directory(const char *);
743 const char *real_path(const char *path);
744 const char *absolute_path(const char *path);
745 const char *relative_path(const char *abs, const char *base);
746 int normalize_path_copy(char *dst, const char *src);
747 int longest_ancestor_length(const char *path, const char *prefix_list);
748 char *strip_path_suffix(const char *path, const char *suffix);
749 int daemon_avoid_alias(const char *path);
750 int offset_1st_component(const char *path);
752 /* Read and unpack a sha1 file into memory, write memory to a sha1 file */
753 extern int sha1_object_info(const unsigned char *, unsigned long *);
754 extern void *read_sha1_file_repl(const unsigned char *sha1, enum object_type *type, unsigned long *size, const unsigned char **replacement);
755 static inline void *read_sha1_file(const unsigned char *sha1, enum object_type *type, unsigned long *size)
757 return read_sha1_file_repl(sha1, type, size, NULL);
759 extern int hash_sha1_file(const void *buf, unsigned long len, const char *type, unsigned char *sha1);
760 extern int write_sha1_file(const void *buf, unsigned long len, const char *type, unsigned char *return_sha1);
761 extern int pretend_sha1_file(void *, unsigned long, enum object_type, unsigned char *);
762 extern int force_object_loose(const unsigned char *sha1, time_t mtime);
764 /* global flag to enable extra checks when accessing packed objects */
765 extern int do_check_packed_object_crc;
767 extern int check_sha1_signature(const unsigned char *sha1, void *buf, unsigned long size, const char *type);
769 extern int move_temp_to_file(const char *tmpfile, const char *filename);
771 extern int has_sha1_pack(const unsigned char *sha1);
772 extern int has_sha1_file(const unsigned char *sha1);
773 extern int has_loose_object_nonlocal(const unsigned char *sha1);
775 extern int has_pack_index(const unsigned char *sha1);
777 extern void assert_sha1_type(const unsigned char *sha1, enum object_type expect);
779 extern const signed char hexval_table[256];
780 static inline unsigned int hexval(unsigned char c)
782 return hexval_table[c];
785 /* Convert to/from hex/sha1 representation */
786 #define MINIMUM_ABBREV minimum_abbrev
787 #define DEFAULT_ABBREV default_abbrev
789 struct object_context {
790 unsigned char tree[20];
791 char path[PATH_MAX];
792 unsigned mode;
795 extern int get_sha1(const char *str, unsigned char *sha1);
796 extern int get_sha1_with_mode_1(const char *str, unsigned char *sha1, unsigned *mode, int gently, const char *prefix);
797 static inline int get_sha1_with_mode(const char *str, unsigned char *sha1, unsigned *mode)
799 return get_sha1_with_mode_1(str, sha1, mode, 1, NULL);
801 extern int get_sha1_with_context_1(const char *name, unsigned char *sha1, struct object_context *orc, int gently, const char *prefix);
802 static inline int get_sha1_with_context(const char *str, unsigned char *sha1, struct object_context *orc)
804 return get_sha1_with_context_1(str, sha1, orc, 1, NULL);
806 extern int get_sha1_hex(const char *hex, unsigned char *sha1);
807 extern char *sha1_to_hex(const unsigned char *sha1); /* static buffer result! */
808 extern int read_ref(const char *filename, unsigned char *sha1);
809 extern const char *resolve_ref(const char *path, unsigned char *sha1, int, int *);
810 extern int dwim_ref(const char *str, int len, unsigned char *sha1, char **ref);
811 extern int dwim_log(const char *str, int len, unsigned char *sha1, char **ref);
812 extern int interpret_branch_name(const char *str, struct strbuf *);
813 extern int get_sha1_mb(const char *str, unsigned char *sha1);
815 extern int refname_match(const char *abbrev_name, const char *full_name, const char **rules);
816 extern const char *ref_rev_parse_rules[];
817 extern const char *ref_fetch_rules[];
819 extern int create_symref(const char *ref, const char *refs_heads_master, const char *logmsg);
820 extern int validate_headref(const char *ref);
822 extern int base_name_compare(const char *name1, int len1, int mode1, const char *name2, int len2, int mode2);
823 extern int df_name_compare(const char *name1, int len1, int mode1, const char *name2, int len2, int mode2);
824 extern int cache_name_compare(const char *name1, int len1, const char *name2, int len2);
826 extern void *read_object_with_reference(const unsigned char *sha1,
827 const char *required_type,
828 unsigned long *size,
829 unsigned char *sha1_ret);
831 extern struct object *peel_to_type(const char *name, int namelen,
832 struct object *o, enum object_type);
834 enum date_mode {
835 DATE_NORMAL = 0,
836 DATE_RELATIVE,
837 DATE_SHORT,
838 DATE_LOCAL,
839 DATE_ISO8601,
840 DATE_RFC2822,
841 DATE_RAW
844 const char *show_date(unsigned long time, int timezone, enum date_mode mode);
845 const char *show_date_relative(unsigned long time, int tz,
846 const struct timeval *now,
847 char *timebuf,
848 size_t timebuf_size);
849 int parse_date(const char *date, char *buf, int bufsize);
850 int parse_date_basic(const char *date, unsigned long *timestamp, int *offset);
851 void datestamp(char *buf, int bufsize);
852 #define approxidate(s) approxidate_careful((s), NULL)
853 unsigned long approxidate_careful(const char *, int *);
854 unsigned long approxidate_relative(const char *date, const struct timeval *now);
855 enum date_mode parse_date_format(const char *format);
857 #define IDENT_WARN_ON_NO_NAME 1
858 #define IDENT_ERROR_ON_NO_NAME 2
859 #define IDENT_NO_DATE 4
860 extern const char *git_author_info(int);
861 extern const char *git_committer_info(int);
862 extern const char *fmt_ident(const char *name, const char *email, const char *date_str, int);
863 extern const char *fmt_name(const char *name, const char *email);
864 extern const char *git_editor(void);
865 extern const char *git_pager(int stdout_is_tty);
867 struct checkout {
868 const char *base_dir;
869 int base_dir_len;
870 unsigned force:1,
871 quiet:1,
872 not_new:1,
873 refresh_cache:1;
876 extern int checkout_entry(struct cache_entry *ce, const struct checkout *state, char *topath);
878 struct cache_def {
879 char path[PATH_MAX + 1];
880 int len;
881 int flags;
882 int track_flags;
883 int prefix_len_stat_func;
886 extern int has_symlink_leading_path(const char *name, int len);
887 extern int threaded_has_symlink_leading_path(struct cache_def *, const char *, int);
888 extern int check_leading_path(const char *name, int len);
889 extern int has_dirs_only_path(const char *name, int len, int prefix_len);
890 extern void schedule_dir_for_removal(const char *name, int len);
891 extern void remove_scheduled_dirs(void);
893 extern struct alternate_object_database {
894 struct alternate_object_database *next;
895 char *name;
896 char base[FLEX_ARRAY]; /* more */
897 } *alt_odb_list;
898 extern void prepare_alt_odb(void);
899 extern void add_to_alternates_file(const char *reference);
900 typedef int alt_odb_fn(struct alternate_object_database *, void *);
901 extern void foreach_alt_odb(alt_odb_fn, void*);
903 struct pack_window {
904 struct pack_window *next;
905 unsigned char *base;
906 off_t offset;
907 size_t len;
908 unsigned int last_used;
909 unsigned int inuse_cnt;
912 extern struct packed_git {
913 struct packed_git *next;
914 struct pack_window *windows;
915 off_t pack_size;
916 const void *index_data;
917 size_t index_size;
918 uint32_t num_objects;
919 uint32_t num_bad_objects;
920 unsigned char *bad_object_sha1;
921 int index_version;
922 time_t mtime;
923 int pack_fd;
924 unsigned pack_local:1,
925 pack_keep:1,
926 do_not_close:1;
927 unsigned char sha1[20];
928 /* something like ".git/objects/pack/xxxxx.pack" */
929 char pack_name[FLEX_ARRAY]; /* more */
930 } *packed_git;
932 struct pack_entry {
933 off_t offset;
934 unsigned char sha1[20];
935 struct packed_git *p;
938 struct ref {
939 struct ref *next;
940 unsigned char old_sha1[20];
941 unsigned char new_sha1[20];
942 char *symref;
943 unsigned int force:1,
944 merge:1,
945 nonfastforward:1,
946 deletion:1;
947 enum {
948 REF_STATUS_NONE = 0,
949 REF_STATUS_OK,
950 REF_STATUS_REJECT_NONFASTFORWARD,
951 REF_STATUS_REJECT_NODELETE,
952 REF_STATUS_UPTODATE,
953 REF_STATUS_REMOTE_REJECT,
954 REF_STATUS_EXPECTING_REPORT
955 } status;
956 char *remote_status;
957 struct ref *peer_ref; /* when renaming */
958 char name[FLEX_ARRAY]; /* more */
961 #define REF_NORMAL (1u << 0)
962 #define REF_HEADS (1u << 1)
963 #define REF_TAGS (1u << 2)
965 extern struct ref *find_ref_by_name(const struct ref *list, const char *name);
967 #define CONNECT_VERBOSE (1u << 0)
968 extern char *git_getpass(const char *prompt);
969 extern struct child_process *git_connect(int fd[2], const char *url, const char *prog, int flags);
970 extern int finish_connect(struct child_process *conn);
971 extern int path_match(const char *path, int nr, char **match);
972 struct extra_have_objects {
973 int nr, alloc;
974 unsigned char (*array)[20];
976 extern struct ref **get_remote_heads(int in, struct ref **list, int nr_match, char **match, unsigned int flags, struct extra_have_objects *);
977 extern int server_supports(const char *feature);
979 extern struct packed_git *parse_pack_index(unsigned char *sha1, const char *idx_path);
981 extern void prepare_packed_git(void);
982 extern void reprepare_packed_git(void);
983 extern void install_packed_git(struct packed_git *pack);
985 extern struct packed_git *find_sha1_pack(const unsigned char *sha1,
986 struct packed_git *packs);
988 extern void pack_report(void);
989 extern int open_pack_index(struct packed_git *);
990 extern void close_pack_index(struct packed_git *);
991 extern unsigned char *use_pack(struct packed_git *, struct pack_window **, off_t, unsigned int *);
992 extern void close_pack_windows(struct packed_git *);
993 extern void unuse_pack(struct pack_window **);
994 extern void free_pack_by_name(const char *);
995 extern void clear_delta_base_cache(void);
996 extern struct packed_git *add_packed_git(const char *, int, int);
997 extern const unsigned char *nth_packed_object_sha1(struct packed_git *, uint32_t);
998 extern off_t nth_packed_object_offset(const struct packed_git *, uint32_t);
999 extern off_t find_pack_entry_one(const unsigned char *, struct packed_git *);
1000 extern void *unpack_entry(struct packed_git *, off_t, enum object_type *, unsigned long *);
1001 extern unsigned long unpack_object_header_buffer(const unsigned char *buf, unsigned long len, enum object_type *type, unsigned long *sizep);
1002 extern unsigned long get_size_from_delta(struct packed_git *, struct pack_window **, off_t);
1003 extern const char *packed_object_info_detail(struct packed_git *, off_t, unsigned long *, unsigned long *, unsigned int *, unsigned char *);
1005 /* Dumb servers support */
1006 extern int update_server_info(int);
1008 typedef int (*config_fn_t)(const char *, const char *, void *);
1009 extern int git_default_config(const char *, const char *, void *);
1010 extern int git_config_from_file(config_fn_t fn, const char *, void *);
1011 extern void git_config_push_parameter(const char *text);
1012 extern int git_config_parse_parameter(const char *text);
1013 extern int git_config_parse_environment(void);
1014 extern int git_config_from_parameters(config_fn_t fn, void *data);
1015 extern int git_config(config_fn_t fn, void *);
1016 extern int git_config_early(config_fn_t fn, void *, const char *repo_config);
1017 extern int git_parse_ulong(const char *, unsigned long *);
1018 extern int git_config_int(const char *, const char *);
1019 extern unsigned long git_config_ulong(const char *, const char *);
1020 extern int git_config_bool_or_int(const char *, const char *, int *);
1021 extern int git_config_bool(const char *, const char *);
1022 extern int git_config_maybe_bool(const char *, const char *);
1023 extern int git_config_string(const char **, const char *, const char *);
1024 extern int git_config_pathname(const char **, const char *, const char *);
1025 extern int git_config_set(const char *, const char *);
1026 extern int git_config_parse_key(const char *, char **, int *);
1027 extern int git_config_set_multivar(const char *, const char *, const char *, int);
1028 extern int git_config_rename_section(const char *, const char *);
1029 extern const char *git_etc_gitconfig(void);
1030 extern int check_repository_format_version(const char *var, const char *value, void *cb);
1031 extern int git_env_bool(const char *, int);
1032 extern int git_config_system(void);
1033 extern int config_error_nonbool(const char *);
1034 extern const char *get_log_output_encoding(void);
1035 extern const char *get_commit_output_encoding(void);
1037 extern const char *config_exclusive_filename;
1039 #define MAX_GITNAME (1000)
1040 extern char git_default_email[MAX_GITNAME];
1041 extern char git_default_name[MAX_GITNAME];
1042 #define IDENT_NAME_GIVEN 01
1043 #define IDENT_MAIL_GIVEN 02
1044 #define IDENT_ALL_GIVEN (IDENT_NAME_GIVEN|IDENT_MAIL_GIVEN)
1045 extern int user_ident_explicitly_given;
1046 extern int user_ident_sufficiently_given(void);
1048 extern const char *git_commit_encoding;
1049 extern const char *git_log_output_encoding;
1050 extern const char *git_mailmap_file;
1052 /* IO helper functions */
1053 extern void maybe_flush_or_die(FILE *, const char *);
1054 extern int copy_fd(int ifd, int ofd);
1055 extern int copy_file(const char *dst, const char *src, int mode);
1056 extern int copy_file_with_time(const char *dst, const char *src, int mode);
1057 extern void write_or_die(int fd, const void *buf, size_t count);
1058 extern int write_or_whine(int fd, const void *buf, size_t count, const char *msg);
1059 extern int write_or_whine_pipe(int fd, const void *buf, size_t count, const char *msg);
1060 extern void fsync_or_die(int fd, const char *);
1062 extern ssize_t read_in_full(int fd, void *buf, size_t count);
1063 extern ssize_t write_in_full(int fd, const void *buf, size_t count);
1064 static inline ssize_t write_str_in_full(int fd, const char *str)
1066 return write_in_full(fd, str, strlen(str));
1069 /* pager.c */
1070 extern void setup_pager(void);
1071 extern const char *pager_program;
1072 extern int pager_in_use(void);
1073 extern int pager_use_color;
1075 extern const char *editor_program;
1076 extern const char *askpass_program;
1077 extern const char *excludes_file;
1079 /* base85 */
1080 int decode_85(char *dst, const char *line, int linelen);
1081 void encode_85(char *buf, const unsigned char *data, int bytes);
1083 /* alloc.c */
1084 extern void *alloc_blob_node(void);
1085 extern void *alloc_tree_node(void);
1086 extern void *alloc_commit_node(void);
1087 extern void *alloc_tag_node(void);
1088 extern void *alloc_object_node(void);
1089 extern void alloc_report(void);
1091 /* trace.c */
1092 __attribute__((format (printf, 1, 2)))
1093 extern void trace_printf(const char *format, ...);
1094 extern void trace_vprintf(const char *key, const char *format, va_list ap);
1095 __attribute__((format (printf, 2, 3)))
1096 extern void trace_argv_printf(const char **argv, const char *format, ...);
1097 extern void trace_repo_setup(const char *prefix);
1098 extern int trace_want(const char *key);
1099 extern void trace_strbuf(const char *key, const struct strbuf *buf);
1101 void packet_trace_identity(const char *prog);
1103 /* convert.c */
1104 /* returns 1 if *dst was used */
1105 extern int convert_to_git(const char *path, const char *src, size_t len,
1106 struct strbuf *dst, enum safe_crlf checksafe);
1107 extern int convert_to_working_tree(const char *path, const char *src, size_t len, struct strbuf *dst);
1108 extern int renormalize_buffer(const char *path, const char *src, size_t len, struct strbuf *dst);
1110 /* add */
1112 * return 0 if success, 1 - if addition of a file failed and
1113 * ADD_FILES_IGNORE_ERRORS was specified in flags
1115 int add_files_to_cache(const char *prefix, const char **pathspec, int flags);
1117 /* diff.c */
1118 extern int diff_auto_refresh_index;
1120 /* match-trees.c */
1121 void shift_tree(const unsigned char *, const unsigned char *, unsigned char *, int);
1122 void shift_tree_by(const unsigned char *, const unsigned char *, unsigned char *, const char *);
1125 * whitespace rules.
1126 * used by both diff and apply
1127 * last two digits are tab width
1129 #define WS_BLANK_AT_EOL 0100
1130 #define WS_SPACE_BEFORE_TAB 0200
1131 #define WS_INDENT_WITH_NON_TAB 0400
1132 #define WS_CR_AT_EOL 01000
1133 #define WS_BLANK_AT_EOF 02000
1134 #define WS_TAB_IN_INDENT 04000
1135 #define WS_TRAILING_SPACE (WS_BLANK_AT_EOL|WS_BLANK_AT_EOF)
1136 #define WS_DEFAULT_RULE (WS_TRAILING_SPACE|WS_SPACE_BEFORE_TAB|8)
1137 #define WS_TAB_WIDTH_MASK 077
1138 extern unsigned whitespace_rule_cfg;
1139 extern unsigned whitespace_rule(const char *);
1140 extern unsigned parse_whitespace_rule(const char *);
1141 extern unsigned ws_check(const char *line, int len, unsigned ws_rule);
1142 extern void ws_check_emit(const char *line, int len, unsigned ws_rule, FILE *stream, const char *set, const char *reset, const char *ws);
1143 extern char *whitespace_error_string(unsigned ws);
1144 extern void ws_fix_copy(struct strbuf *, const char *, int, unsigned, int *);
1145 extern int ws_blank_line(const char *line, int len, unsigned ws_rule);
1146 #define ws_tab_width(rule) ((rule) & WS_TAB_WIDTH_MASK)
1148 /* ls-files */
1149 int report_path_error(const char *ps_matched, const char **pathspec, int prefix_offset);
1150 void overlay_tree_on_cache(const char *tree_name, const char *prefix);
1152 char *alias_lookup(const char *alias);
1153 int split_cmdline(char *cmdline, const char ***argv);
1154 /* Takes a negative value returned by split_cmdline */
1155 const char *split_cmdline_strerror(int cmdline_errno);
1157 /* git.c */
1158 struct startup_info {
1159 int have_repository;
1160 const char *prefix;
1162 extern struct startup_info *startup_info;
1164 /* builtin/merge.c */
1165 int checkout_fast_forward(const unsigned char *from, const unsigned char *to);
1167 #endif /* CACHE_H */