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>
20 void git_inflate_init(z_streamp strm);
21 void git_inflate_init_gzip_only(z_streamp strm);
22 void git_inflate_end(z_streamp strm);
23 int git_inflate(z_streamp strm, int flush);
25 void git_deflate_init(z_streamp strm, int level);
26 void git_deflate_init_gzip(z_streamp strm, int level);
27 void git_deflate_end(z_streamp strm);
28 int git_deflate_end_gently(z_streamp strm);
29 int git_deflate(z_streamp strm, int flush);
30 unsigned long git_deflate_bound(z_streamp, unsigned long);
32 #if defined(DT_UNKNOWN) && !defined(NO_D_TYPE_IN_DIRENT)
33 #define DTYPE(de) ((de)->d_type)
34 #else
35 #undef DT_UNKNOWN
36 #undef DT_DIR
37 #undef DT_REG
38 #undef DT_LNK
39 #define DT_UNKNOWN 0
40 #define DT_DIR 1
41 #define DT_REG 2
42 #define DT_LNK 3
43 #define DTYPE(de) DT_UNKNOWN
44 #endif
46 /* unknown mode (impossible combination S_IFIFO|S_IFCHR) */
47 #define S_IFINVALID 0030000
49 /*
50 * A "directory link" is a link to another git directory.
51 *
52 * The value 0160000 is not normally a valid mode, and
53 * also just happens to be S_IFDIR + S_IFLNK
54 *
55 * NOTE! We *really* shouldn't depend on the S_IFxxx macros
56 * always having the same values everywhere. We should use
57 * our internal git values for these things, and then we can
58 * translate that to the OS-specific value. It just so
59 * happens that everybody shares the same bit representation
60 * in the UNIX world (and apparently wider too..)
61 */
62 #define S_IFGITLINK 0160000
63 #define S_ISGITLINK(m) (((m) & S_IFMT) == S_IFGITLINK)
65 /*
66 * Intensive research over the course of many years has shown that
67 * port 9418 is totally unused by anything else. Or
68 *
69 * Your search - "port 9418" - did not match any documents.
70 *
71 * as www.google.com puts it.
72 *
73 * This port has been properly assigned for git use by IANA:
74 * git (Assigned-9418) [I06-050728-0001].
75 *
76 * git 9418/tcp git pack transfer service
77 * git 9418/udp git pack transfer service
78 *
79 * with Linus Torvalds <torvalds@osdl.org> as the point of
80 * contact. September 2005.
81 *
82 * See http://www.iana.org/assignments/port-numbers
83 */
84 #define DEFAULT_GIT_PORT 9418
86 /*
87 * Basic data structures for the directory cache
88 */
90 #define CACHE_SIGNATURE 0x44495243 /* "DIRC" */
91 struct cache_header {
92 unsigned int hdr_signature;
93 unsigned int hdr_version;
94 unsigned int hdr_entries;
95 };
97 /*
98 * The "cache_time" is just the low 32 bits of the
99 * time. It doesn't matter if it overflows - we only
100 * check it for equality in the 32 bits we save.
101 */
102 struct cache_time {
103 unsigned int sec;
104 unsigned int nsec;
105 };
107 /*
108 * dev/ino/uid/gid/size are also just tracked to the low 32 bits
109 * Again - this is just a (very strong in practice) heuristic that
110 * the inode hasn't changed.
111 *
112 * We save the fields in big-endian order to allow using the
113 * index file over NFS transparently.
114 */
115 struct ondisk_cache_entry {
116 struct cache_time ctime;
117 struct cache_time mtime;
118 unsigned int dev;
119 unsigned int ino;
120 unsigned int mode;
121 unsigned int uid;
122 unsigned int gid;
123 unsigned int size;
124 unsigned char sha1[20];
125 unsigned short flags;
126 char name[FLEX_ARRAY]; /* more */
127 };
129 /*
130 * This struct is used when CE_EXTENDED bit is 1
131 * The struct must match ondisk_cache_entry exactly from
132 * ctime till flags
133 */
134 struct ondisk_cache_entry_extended {
135 struct cache_time ctime;
136 struct cache_time mtime;
137 unsigned int dev;
138 unsigned int ino;
139 unsigned int mode;
140 unsigned int uid;
141 unsigned int gid;
142 unsigned int size;
143 unsigned char sha1[20];
144 unsigned short flags;
145 unsigned short flags2;
146 char name[FLEX_ARRAY]; /* more */
147 };
149 struct cache_entry {
150 struct cache_time ce_ctime;
151 struct cache_time ce_mtime;
152 unsigned int ce_dev;
153 unsigned int ce_ino;
154 unsigned int ce_mode;
155 unsigned int ce_uid;
156 unsigned int ce_gid;
157 unsigned int ce_size;
158 unsigned int ce_flags;
159 unsigned char sha1[20];
160 struct cache_entry *next;
161 char name[FLEX_ARRAY]; /* more */
162 };
164 #define CE_NAMEMASK (0x0fff)
165 #define CE_STAGEMASK (0x3000)
166 #define CE_EXTENDED (0x4000)
167 #define CE_VALID (0x8000)
168 #define CE_STAGESHIFT 12
170 /*
171 * Range 0xFFFF0000 in ce_flags is divided into
172 * two parts: in-memory flags and on-disk ones.
173 * Flags in CE_EXTENDED_FLAGS will get saved on-disk
174 * if you want to save a new flag, add it in
175 * CE_EXTENDED_FLAGS
176 *
177 * In-memory only flags
178 */
179 #define CE_UPDATE (1 << 16)
180 #define CE_REMOVE (1 << 17)
181 #define CE_UPTODATE (1 << 18)
182 #define CE_ADDED (1 << 19)
184 #define CE_HASHED (1 << 20)
185 #define CE_UNHASHED (1 << 21)
186 #define CE_WT_REMOVE (1 << 22) /* remove in work directory */
187 #define CE_CONFLICTED (1 << 23)
189 #define CE_UNPACKED (1 << 24)
190 #define CE_NEW_SKIP_WORKTREE (1 << 25)
192 /*
193 * Extended on-disk flags
194 */
195 #define CE_INTENT_TO_ADD (1 << 29)
196 #define CE_SKIP_WORKTREE (1 << 30)
197 /* CE_EXTENDED2 is for future extension */
198 #define CE_EXTENDED2 (1 << 31)
200 #define CE_EXTENDED_FLAGS (CE_INTENT_TO_ADD | CE_SKIP_WORKTREE)
202 /*
203 * Safeguard to avoid saving wrong flags:
204 * - CE_EXTENDED2 won't get saved until its semantic is known
205 * - Bits in 0x0000FFFF have been saved in ce_flags already
206 * - Bits in 0x003F0000 are currently in-memory flags
207 */
208 #if CE_EXTENDED_FLAGS & 0x803FFFFF
209 #error "CE_EXTENDED_FLAGS out of range"
210 #endif
212 /*
213 * Copy the sha1 and stat state of a cache entry from one to
214 * another. But we never change the name, or the hash state!
215 */
216 #define CE_STATE_MASK (CE_HASHED | CE_UNHASHED)
217 static inline void copy_cache_entry(struct cache_entry *dst, struct cache_entry *src)
218 {
219 unsigned int state = dst->ce_flags & CE_STATE_MASK;
221 /* Don't copy hash chain and name */
222 memcpy(dst, src, offsetof(struct cache_entry, next));
224 /* Restore the hash state */
225 dst->ce_flags = (dst->ce_flags & ~CE_STATE_MASK) | state;
226 }
228 static inline unsigned create_ce_flags(size_t len, unsigned stage)
229 {
230 if (len >= CE_NAMEMASK)
231 len = CE_NAMEMASK;
232 return (len | (stage << CE_STAGESHIFT));
233 }
235 static inline size_t ce_namelen(const struct cache_entry *ce)
236 {
237 size_t len = ce->ce_flags & CE_NAMEMASK;
238 if (len < CE_NAMEMASK)
239 return len;
240 return strlen(ce->name + CE_NAMEMASK) + CE_NAMEMASK;
241 }
243 #define ce_size(ce) cache_entry_size(ce_namelen(ce))
244 #define ondisk_ce_size(ce) (((ce)->ce_flags & CE_EXTENDED) ? \
245 ondisk_cache_entry_extended_size(ce_namelen(ce)) : \
246 ondisk_cache_entry_size(ce_namelen(ce)))
247 #define ce_stage(ce) ((CE_STAGEMASK & (ce)->ce_flags) >> CE_STAGESHIFT)
248 #define ce_uptodate(ce) ((ce)->ce_flags & CE_UPTODATE)
249 #define ce_skip_worktree(ce) ((ce)->ce_flags & CE_SKIP_WORKTREE)
250 #define ce_mark_uptodate(ce) ((ce)->ce_flags |= CE_UPTODATE)
252 #define ce_permissions(mode) (((mode) & 0100) ? 0755 : 0644)
253 static inline unsigned int create_ce_mode(unsigned int mode)
254 {
255 if (S_ISLNK(mode))
256 return S_IFLNK;
257 if (S_ISDIR(mode) || S_ISGITLINK(mode))
258 return S_IFGITLINK;
259 return S_IFREG | ce_permissions(mode);
260 }
261 static inline unsigned int ce_mode_from_stat(struct cache_entry *ce, unsigned int mode)
262 {
263 extern int trust_executable_bit, has_symlinks;
264 if (!has_symlinks && S_ISREG(mode) &&
265 ce && S_ISLNK(ce->ce_mode))
266 return ce->ce_mode;
267 if (!trust_executable_bit && S_ISREG(mode)) {
268 if (ce && S_ISREG(ce->ce_mode))
269 return ce->ce_mode;
270 return create_ce_mode(0666);
271 }
272 return create_ce_mode(mode);
273 }
274 static inline int ce_to_dtype(const struct cache_entry *ce)
275 {
276 unsigned ce_mode = ntohl(ce->ce_mode);
277 if (S_ISREG(ce_mode))
278 return DT_REG;
279 else if (S_ISDIR(ce_mode) || S_ISGITLINK(ce_mode))
280 return DT_DIR;
281 else if (S_ISLNK(ce_mode))
282 return DT_LNK;
283 else
284 return DT_UNKNOWN;
285 }
286 static inline unsigned int canon_mode(unsigned int mode)
287 {
288 if (S_ISREG(mode))
289 return S_IFREG | ce_permissions(mode);
290 if (S_ISLNK(mode))
291 return S_IFLNK;
292 if (S_ISDIR(mode))
293 return S_IFDIR;
294 return S_IFGITLINK;
295 }
297 #define flexible_size(STRUCT,len) ((offsetof(struct STRUCT,name) + (len) + 8) & ~7)
298 #define cache_entry_size(len) flexible_size(cache_entry,len)
299 #define ondisk_cache_entry_size(len) flexible_size(ondisk_cache_entry,len)
300 #define ondisk_cache_entry_extended_size(len) flexible_size(ondisk_cache_entry_extended,len)
302 struct index_state {
303 struct cache_entry **cache;
304 unsigned int cache_nr, cache_alloc, cache_changed;
305 struct string_list *resolve_undo;
306 struct cache_tree *cache_tree;
307 struct cache_time timestamp;
308 void *alloc;
309 unsigned name_hash_initialized : 1,
310 initialized : 1;
311 struct hash_table name_hash;
312 };
314 extern struct index_state the_index;
316 /* Name hashing */
317 extern void add_name_hash(struct index_state *istate, struct cache_entry *ce);
318 /*
319 * We don't actually *remove* it, we can just mark it invalid so that
320 * we won't find it in lookups.
321 *
322 * Not only would we have to search the lists (simple enough), but
323 * we'd also have to rehash other hash buckets in case this makes the
324 * hash bucket empty (common). So it's much better to just mark
325 * it.
326 */
327 static inline void remove_name_hash(struct cache_entry *ce)
328 {
329 ce->ce_flags |= CE_UNHASHED;
330 }
333 #ifndef NO_THE_INDEX_COMPATIBILITY_MACROS
334 #define active_cache (the_index.cache)
335 #define active_nr (the_index.cache_nr)
336 #define active_alloc (the_index.cache_alloc)
337 #define active_cache_changed (the_index.cache_changed)
338 #define active_cache_tree (the_index.cache_tree)
340 #define read_cache() read_index(&the_index)
341 #define read_cache_from(path) read_index_from(&the_index, (path))
342 #define read_cache_preload(pathspec) read_index_preload(&the_index, (pathspec))
343 #define is_cache_unborn() is_index_unborn(&the_index)
344 #define read_cache_unmerged() read_index_unmerged(&the_index)
345 #define write_cache(newfd, cache, entries) write_index(&the_index, (newfd))
346 #define discard_cache() discard_index(&the_index)
347 #define unmerged_cache() unmerged_index(&the_index)
348 #define cache_name_pos(name, namelen) index_name_pos(&the_index,(name),(namelen))
349 #define add_cache_entry(ce, option) add_index_entry(&the_index, (ce), (option))
350 #define rename_cache_entry_at(pos, new_name) rename_index_entry_at(&the_index, (pos), (new_name))
351 #define remove_cache_entry_at(pos) remove_index_entry_at(&the_index, (pos))
352 #define remove_file_from_cache(path) remove_file_from_index(&the_index, (path))
353 #define add_to_cache(path, st, flags) add_to_index(&the_index, (path), (st), (flags))
354 #define add_file_to_cache(path, flags) add_file_to_index(&the_index, (path), (flags))
355 #define refresh_cache(flags) refresh_index(&the_index, (flags), NULL, NULL, NULL)
356 #define ce_match_stat(ce, st, options) ie_match_stat(&the_index, (ce), (st), (options))
357 #define ce_modified(ce, st, options) ie_modified(&the_index, (ce), (st), (options))
358 #define cache_name_exists(name, namelen, igncase) index_name_exists(&the_index, (name), (namelen), (igncase))
359 #define cache_name_is_other(name, namelen) index_name_is_other(&the_index, (name), (namelen))
360 #define resolve_undo_clear() resolve_undo_clear_index(&the_index)
361 #define unmerge_cache_entry_at(at) unmerge_index_entry_at(&the_index, at)
362 #define unmerge_cache(pathspec) unmerge_index(&the_index, pathspec)
363 #endif
365 enum object_type {
366 OBJ_BAD = -1,
367 OBJ_NONE = 0,
368 OBJ_COMMIT = 1,
369 OBJ_TREE = 2,
370 OBJ_BLOB = 3,
371 OBJ_TAG = 4,
372 /* 5 for future expansion */
373 OBJ_OFS_DELTA = 6,
374 OBJ_REF_DELTA = 7,
375 OBJ_ANY,
376 OBJ_MAX
377 };
379 static inline enum object_type object_type(unsigned int mode)
380 {
381 return S_ISDIR(mode) ? OBJ_TREE :
382 S_ISGITLINK(mode) ? OBJ_COMMIT :
383 OBJ_BLOB;
384 }
386 #define GIT_DIR_ENVIRONMENT "GIT_DIR"
387 #define GIT_WORK_TREE_ENVIRONMENT "GIT_WORK_TREE"
388 #define DEFAULT_GIT_DIR_ENVIRONMENT ".git"
389 #define DB_ENVIRONMENT "GIT_OBJECT_DIRECTORY"
390 #define INDEX_ENVIRONMENT "GIT_INDEX_FILE"
391 #define GRAFT_ENVIRONMENT "GIT_GRAFT_FILE"
392 #define TEMPLATE_DIR_ENVIRONMENT "GIT_TEMPLATE_DIR"
393 #define CONFIG_ENVIRONMENT "GIT_CONFIG"
394 #define CONFIG_DATA_ENVIRONMENT "GIT_CONFIG_PARAMETERS"
395 #define EXEC_PATH_ENVIRONMENT "GIT_EXEC_PATH"
396 #define CEILING_DIRECTORIES_ENVIRONMENT "GIT_CEILING_DIRECTORIES"
397 #define NO_REPLACE_OBJECTS_ENVIRONMENT "GIT_NO_REPLACE_OBJECTS"
398 #define GITATTRIBUTES_FILE ".gitattributes"
399 #define INFOATTRIBUTES_FILE "info/attributes"
400 #define ATTRIBUTE_MACRO_PREFIX "[attr]"
401 #define GIT_NOTES_REF_ENVIRONMENT "GIT_NOTES_REF"
402 #define GIT_NOTES_DEFAULT_REF "refs/notes/commits"
403 #define GIT_NOTES_DISPLAY_REF_ENVIRONMENT "GIT_NOTES_DISPLAY_REF"
404 #define GIT_NOTES_REWRITE_REF_ENVIRONMENT "GIT_NOTES_REWRITE_REF"
405 #define GIT_NOTES_REWRITE_MODE_ENVIRONMENT "GIT_NOTES_REWRITE_MODE"
407 /*
408 * Repository-local GIT_* environment variables
409 * The array is NULL-terminated to simplify its usage in contexts such
410 * environment creation or simple walk of the list.
411 * The number of non-NULL entries is available as a macro.
412 */
413 #define LOCAL_REPO_ENV_SIZE 9
414 extern const char *const local_repo_env[LOCAL_REPO_ENV_SIZE + 1];
416 extern int is_bare_repository_cfg;
417 extern int is_bare_repository(void);
418 extern int is_inside_git_dir(void);
419 extern char *git_work_tree_cfg;
420 extern int is_inside_work_tree(void);
421 extern int have_git_dir(void);
422 extern const char *get_git_dir(void);
423 extern char *get_object_directory(void);
424 extern char *get_index_file(void);
425 extern char *get_graft_file(void);
426 extern int set_git_dir(const char *path);
427 extern const char *get_git_work_tree(void);
428 extern const char *read_gitfile_gently(const char *path);
429 extern void set_git_work_tree(const char *tree);
431 #define ALTERNATE_DB_ENVIRONMENT "GIT_ALTERNATE_OBJECT_DIRECTORIES"
433 extern const char **get_pathspec(const char *prefix, const char **pathspec);
434 extern void setup_work_tree(void);
435 extern const char *setup_git_directory_gently(int *);
436 extern const char *setup_git_directory(void);
437 extern char *prefix_path(const char *prefix, int len, const char *path);
438 extern const char *prefix_filename(const char *prefix, int len, const char *path);
439 extern int check_filename(const char *prefix, const char *name);
440 extern void verify_filename(const char *prefix, const char *name);
441 extern void verify_non_filename(const char *prefix, const char *name);
443 #define INIT_DB_QUIET 0x0001
445 extern int set_git_dir_init(const char *git_dir, const char *real_git_dir, int);
446 extern int init_db(const char *template_dir, unsigned int flags);
448 #define alloc_nr(x) (((x)+16)*3/2)
450 /*
451 * Realloc the buffer pointed at by variable 'x' so that it can hold
452 * at least 'nr' entries; the number of entries currently allocated
453 * is 'alloc', using the standard growing factor alloc_nr() macro.
454 *
455 * DO NOT USE any expression with side-effect for 'x', 'nr', or 'alloc'.
456 */
457 #define ALLOC_GROW(x, nr, alloc) \
458 do { \
459 if ((nr) > alloc) { \
460 if (alloc_nr(alloc) < (nr)) \
461 alloc = (nr); \
462 else \
463 alloc = alloc_nr(alloc); \
464 x = xrealloc((x), alloc * sizeof(*(x))); \
465 } \
466 } while (0)
468 /* Initialize and use the cache information */
469 extern int read_index(struct index_state *);
470 extern int read_index_preload(struct index_state *, const char **pathspec);
471 extern int read_index_from(struct index_state *, const char *path);
472 extern int is_index_unborn(struct index_state *);
473 extern int read_index_unmerged(struct index_state *);
474 extern int write_index(struct index_state *, int newfd);
475 extern int discard_index(struct index_state *);
476 extern int unmerged_index(const struct index_state *);
477 extern int verify_path(const char *path);
478 extern struct cache_entry *index_name_exists(struct index_state *istate, const char *name, int namelen, int igncase);
479 extern int index_name_pos(const struct index_state *, const char *name, int namelen);
480 #define ADD_CACHE_OK_TO_ADD 1 /* Ok to add */
481 #define ADD_CACHE_OK_TO_REPLACE 2 /* Ok to replace file/directory */
482 #define ADD_CACHE_SKIP_DFCHECK 4 /* Ok to skip DF conflict checks */
483 #define ADD_CACHE_JUST_APPEND 8 /* Append only; tree.c::read_tree() */
484 #define ADD_CACHE_NEW_ONLY 16 /* Do not replace existing ones */
485 extern int add_index_entry(struct index_state *, struct cache_entry *ce, int option);
486 extern void rename_index_entry_at(struct index_state *, int pos, const char *new_name);
487 extern int remove_index_entry_at(struct index_state *, int pos);
488 extern void remove_marked_cache_entries(struct index_state *istate);
489 extern int remove_file_from_index(struct index_state *, const char *path);
490 #define ADD_CACHE_VERBOSE 1
491 #define ADD_CACHE_PRETEND 2
492 #define ADD_CACHE_IGNORE_ERRORS 4
493 #define ADD_CACHE_IGNORE_REMOVAL 8
494 #define ADD_CACHE_INTENT 16
495 extern int add_to_index(struct index_state *, const char *path, struct stat *, int flags);
496 extern int add_file_to_index(struct index_state *, const char *path, int flags);
497 extern struct cache_entry *make_cache_entry(unsigned int mode, const unsigned char *sha1, const char *path, int stage, int refresh);
498 extern int ce_same_name(struct cache_entry *a, struct cache_entry *b);
499 extern int index_name_is_other(const struct index_state *, const char *, int);
501 /* do stat comparison even if CE_VALID is true */
502 #define CE_MATCH_IGNORE_VALID 01
503 /* do not check the contents but report dirty on racily-clean entries */
504 #define CE_MATCH_RACY_IS_DIRTY 02
505 /* do stat comparison even if CE_SKIP_WORKTREE is true */
506 #define CE_MATCH_IGNORE_SKIP_WORKTREE 04
507 extern int ie_match_stat(const struct index_state *, struct cache_entry *, struct stat *, unsigned int);
508 extern int ie_modified(const struct index_state *, struct cache_entry *, struct stat *, unsigned int);
510 struct pathspec {
511 const char **raw; /* get_pathspec() result, not freed by free_pathspec() */
512 int nr;
513 unsigned int has_wildcard:1;
514 unsigned int recursive:1;
515 int max_depth;
516 struct pathspec_item {
517 const char *match;
518 int len;
519 unsigned int has_wildcard:1;
520 } *items;
521 };
523 extern int init_pathspec(struct pathspec *, const char **);
524 extern void free_pathspec(struct pathspec *);
525 extern int ce_path_match(const struct cache_entry *ce, const struct pathspec *pathspec);
526 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);
527 extern int index_path(unsigned char *sha1, const char *path, struct stat *st, int write_object);
528 extern void fill_stat_cache_info(struct cache_entry *ce, struct stat *st);
530 #define REFRESH_REALLY 0x0001 /* ignore_valid */
531 #define REFRESH_UNMERGED 0x0002 /* allow unmerged */
532 #define REFRESH_QUIET 0x0004 /* be quiet about it */
533 #define REFRESH_IGNORE_MISSING 0x0008 /* ignore non-existent */
534 #define REFRESH_IGNORE_SUBMODULES 0x0010 /* ignore submodules */
535 #define REFRESH_IN_PORCELAIN 0x0020 /* user friendly output, not "needs update" */
536 extern int refresh_index(struct index_state *, unsigned int flags, const char **pathspec, char *seen, const char *header_msg);
538 struct lock_file {
539 struct lock_file *next;
540 int fd;
541 pid_t owner;
542 char on_list;
543 char filename[PATH_MAX];
544 };
545 #define LOCK_DIE_ON_ERROR 1
546 #define LOCK_NODEREF 2
547 extern int unable_to_lock_error(const char *path, int err);
548 extern NORETURN void unable_to_lock_index_die(const char *path, int err);
549 extern int hold_lock_file_for_update(struct lock_file *, const char *path, int);
550 extern int hold_lock_file_for_append(struct lock_file *, const char *path, int);
551 extern int commit_lock_file(struct lock_file *);
552 extern void update_index_if_able(struct index_state *, struct lock_file *);
554 extern int hold_locked_index(struct lock_file *, int);
555 extern int commit_locked_index(struct lock_file *);
556 extern void set_alternate_index_output(const char *);
557 extern int close_lock_file(struct lock_file *);
558 extern void rollback_lock_file(struct lock_file *);
559 extern int delete_ref(const char *, const unsigned char *sha1, int delopt);
561 /* Environment bits from configuration mechanism */
562 extern int trust_executable_bit;
563 extern int trust_ctime;
564 extern int quote_path_fully;
565 extern int has_symlinks;
566 extern int minimum_abbrev, default_abbrev;
567 extern int ignore_case;
568 extern int assume_unchanged;
569 extern int prefer_symlink_refs;
570 extern int log_all_ref_updates;
571 extern int warn_ambiguous_refs;
572 extern int shared_repository;
573 extern const char *apply_default_whitespace;
574 extern const char *apply_default_ignorewhitespace;
575 extern int zlib_compression_level;
576 extern int core_compression_level;
577 extern int core_compression_seen;
578 extern size_t packed_git_window_size;
579 extern size_t packed_git_limit;
580 extern size_t delta_base_cache_limit;
581 extern unsigned long big_file_threshold;
582 extern int read_replace_refs;
583 extern int fsync_object_files;
584 extern int core_preload_index;
585 extern int core_apply_sparse_checkout;
587 enum safe_crlf {
588 SAFE_CRLF_FALSE = 0,
589 SAFE_CRLF_FAIL = 1,
590 SAFE_CRLF_WARN = 2
591 };
593 extern enum safe_crlf safe_crlf;
595 enum auto_crlf {
596 AUTO_CRLF_FALSE = 0,
597 AUTO_CRLF_TRUE = 1,
598 AUTO_CRLF_INPUT = -1
599 };
601 extern enum auto_crlf auto_crlf;
603 enum eol {
604 EOL_UNSET,
605 EOL_CRLF,
606 EOL_LF,
607 #ifdef NATIVE_CRLF
608 EOL_NATIVE = EOL_CRLF
609 #else
610 EOL_NATIVE = EOL_LF
611 #endif
612 };
614 extern enum eol eol;
616 enum branch_track {
617 BRANCH_TRACK_UNSPECIFIED = -1,
618 BRANCH_TRACK_NEVER = 0,
619 BRANCH_TRACK_REMOTE,
620 BRANCH_TRACK_ALWAYS,
621 BRANCH_TRACK_EXPLICIT,
622 BRANCH_TRACK_OVERRIDE
623 };
625 enum rebase_setup_type {
626 AUTOREBASE_NEVER = 0,
627 AUTOREBASE_LOCAL,
628 AUTOREBASE_REMOTE,
629 AUTOREBASE_ALWAYS
630 };
632 enum push_default_type {
633 PUSH_DEFAULT_NOTHING = 0,
634 PUSH_DEFAULT_MATCHING,
635 PUSH_DEFAULT_UPSTREAM,
636 PUSH_DEFAULT_CURRENT
637 };
639 extern enum branch_track git_branch_track;
640 extern enum rebase_setup_type autorebase;
641 extern enum push_default_type push_default;
643 enum object_creation_mode {
644 OBJECT_CREATION_USES_HARDLINKS = 0,
645 OBJECT_CREATION_USES_RENAMES = 1
646 };
648 extern enum object_creation_mode object_creation_mode;
650 extern char *notes_ref_name;
652 extern int grafts_replace_parents;
654 #define GIT_REPO_VERSION 0
655 extern int repository_format_version;
656 extern int check_repository_format(void);
658 #define MTIME_CHANGED 0x0001
659 #define CTIME_CHANGED 0x0002
660 #define OWNER_CHANGED 0x0004
661 #define MODE_CHANGED 0x0008
662 #define INODE_CHANGED 0x0010
663 #define DATA_CHANGED 0x0020
664 #define TYPE_CHANGED 0x0040
666 extern char *mksnpath(char *buf, size_t n, const char *fmt, ...)
667 __attribute__((format (printf, 3, 4)));
668 extern char *git_snpath(char *buf, size_t n, const char *fmt, ...)
669 __attribute__((format (printf, 3, 4)));
670 extern char *git_pathdup(const char *fmt, ...)
671 __attribute__((format (printf, 1, 2)));
673 /* Return a statically allocated filename matching the sha1 signature */
674 extern char *mkpath(const char *fmt, ...) __attribute__((format (printf, 1, 2)));
675 extern char *git_path(const char *fmt, ...) __attribute__((format (printf, 1, 2)));
676 extern char *git_path_submodule(const char *path, const char *fmt, ...)
677 __attribute__((format (printf, 2, 3)));
679 extern char *sha1_file_name(const unsigned char *sha1);
680 extern char *sha1_pack_name(const unsigned char *sha1);
681 extern char *sha1_pack_index_name(const unsigned char *sha1);
682 extern const char *find_unique_abbrev(const unsigned char *sha1, int);
683 extern const unsigned char null_sha1[20];
684 static inline int is_null_sha1(const unsigned char *sha1)
685 {
686 return !memcmp(sha1, null_sha1, 20);
687 }
688 static inline int hashcmp(const unsigned char *sha1, const unsigned char *sha2)
689 {
690 return memcmp(sha1, sha2, 20);
691 }
692 static inline void hashcpy(unsigned char *sha_dst, const unsigned char *sha_src)
693 {
694 memcpy(sha_dst, sha_src, 20);
695 }
696 static inline void hashclr(unsigned char *hash)
697 {
698 memset(hash, 0, 20);
699 }
701 #define EMPTY_TREE_SHA1_HEX \
702 "4b825dc642cb6eb9a060e54bf8d69288fbee4904"
703 #define EMPTY_TREE_SHA1_BIN_LITERAL \
704 "\x4b\x82\x5d\xc6\x42\xcb\x6e\xb9\xa0\x60" \
705 "\xe5\x4b\xf8\xd6\x92\x88\xfb\xee\x49\x04"
706 #define EMPTY_TREE_SHA1_BIN \
707 ((const unsigned char *) EMPTY_TREE_SHA1_BIN_LITERAL)
709 int git_mkstemp(char *path, size_t n, const char *template);
711 int git_mkstemps(char *path, size_t n, const char *template, int suffix_len);
713 /* set default permissions by passing mode arguments to open(2) */
714 int git_mkstemps_mode(char *pattern, int suffix_len, int mode);
715 int git_mkstemp_mode(char *pattern, int mode);
717 /*
718 * NOTE NOTE NOTE!!
719 *
720 * PERM_UMASK, OLD_PERM_GROUP and OLD_PERM_EVERYBODY enumerations must
721 * not be changed. Old repositories have core.sharedrepository written in
722 * numeric format, and therefore these values are preserved for compatibility
723 * reasons.
724 */
725 enum sharedrepo {
726 PERM_UMASK = 0,
727 OLD_PERM_GROUP = 1,
728 OLD_PERM_EVERYBODY = 2,
729 PERM_GROUP = 0660,
730 PERM_EVERYBODY = 0664
731 };
732 int git_config_perm(const char *var, const char *value);
733 int set_shared_perm(const char *path, int mode);
734 #define adjust_shared_perm(path) set_shared_perm((path), 0)
735 int safe_create_leading_directories(char *path);
736 int safe_create_leading_directories_const(const char *path);
737 int mkdir_in_gitdir(const char *path);
738 extern char *expand_user_path(const char *path);
739 char *enter_repo(char *path, int strict);
740 static inline int is_absolute_path(const char *path)
741 {
742 return path[0] == '/' || has_dos_drive_prefix(path);
743 }
744 int is_directory(const char *);
745 const char *real_path(const char *path);
746 const char *absolute_path(const char *path);
747 const char *relative_path(const char *abs, const char *base);
748 int normalize_path_copy(char *dst, const char *src);
749 int longest_ancestor_length(const char *path, const char *prefix_list);
750 char *strip_path_suffix(const char *path, const char *suffix);
751 int daemon_avoid_alias(const char *path);
752 int offset_1st_component(const char *path);
754 /* Read and unpack a sha1 file into memory, write memory to a sha1 file */
755 extern int sha1_object_info(const unsigned char *, unsigned long *);
756 extern void *read_sha1_file_repl(const unsigned char *sha1, enum object_type *type, unsigned long *size, const unsigned char **replacement);
757 static inline void *read_sha1_file(const unsigned char *sha1, enum object_type *type, unsigned long *size)
758 {
759 return read_sha1_file_repl(sha1, type, size, NULL);
760 }
761 extern int hash_sha1_file(const void *buf, unsigned long len, const char *type, unsigned char *sha1);
762 extern int write_sha1_file(const void *buf, unsigned long len, const char *type, unsigned char *return_sha1);
763 extern int pretend_sha1_file(void *, unsigned long, enum object_type, unsigned char *);
764 extern int force_object_loose(const unsigned char *sha1, time_t mtime);
766 /* global flag to enable extra checks when accessing packed objects */
767 extern int do_check_packed_object_crc;
769 extern int check_sha1_signature(const unsigned char *sha1, void *buf, unsigned long size, const char *type);
771 extern int move_temp_to_file(const char *tmpfile, const char *filename);
773 extern int has_sha1_pack(const unsigned char *sha1);
774 extern int has_sha1_file(const unsigned char *sha1);
775 extern int has_loose_object_nonlocal(const unsigned char *sha1);
777 extern int has_pack_index(const unsigned char *sha1);
779 extern void assert_sha1_type(const unsigned char *sha1, enum object_type expect);
781 extern const signed char hexval_table[256];
782 static inline unsigned int hexval(unsigned char c)
783 {
784 return hexval_table[c];
785 }
787 /* Convert to/from hex/sha1 representation */
788 #define MINIMUM_ABBREV minimum_abbrev
789 #define DEFAULT_ABBREV default_abbrev
791 struct object_context {
792 unsigned char tree[20];
793 char path[PATH_MAX];
794 unsigned mode;
795 };
797 extern int get_sha1(const char *str, unsigned char *sha1);
798 extern int get_sha1_with_mode_1(const char *str, unsigned char *sha1, unsigned *mode, int gently, const char *prefix);
799 static inline int get_sha1_with_mode(const char *str, unsigned char *sha1, unsigned *mode)
800 {
801 return get_sha1_with_mode_1(str, sha1, mode, 1, NULL);
802 }
803 extern int get_sha1_with_context_1(const char *name, unsigned char *sha1, struct object_context *orc, int gently, const char *prefix);
804 static inline int get_sha1_with_context(const char *str, unsigned char *sha1, struct object_context *orc)
805 {
806 return get_sha1_with_context_1(str, sha1, orc, 1, NULL);
807 }
808 extern int get_sha1_hex(const char *hex, unsigned char *sha1);
809 extern char *sha1_to_hex(const unsigned char *sha1); /* static buffer result! */
810 extern int read_ref(const char *filename, unsigned char *sha1);
811 extern const char *resolve_ref(const char *path, unsigned char *sha1, int, int *);
812 extern int dwim_ref(const char *str, int len, unsigned char *sha1, char **ref);
813 extern int dwim_log(const char *str, int len, unsigned char *sha1, char **ref);
814 extern int interpret_branch_name(const char *str, struct strbuf *);
815 extern int get_sha1_mb(const char *str, unsigned char *sha1);
817 extern int refname_match(const char *abbrev_name, const char *full_name, const char **rules);
818 extern const char *ref_rev_parse_rules[];
819 extern const char *ref_fetch_rules[];
821 extern int create_symref(const char *ref, const char *refs_heads_master, const char *logmsg);
822 extern int validate_headref(const char *ref);
824 extern int base_name_compare(const char *name1, int len1, int mode1, const char *name2, int len2, int mode2);
825 extern int df_name_compare(const char *name1, int len1, int mode1, const char *name2, int len2, int mode2);
826 extern int cache_name_compare(const char *name1, int len1, const char *name2, int len2);
828 extern void *read_object_with_reference(const unsigned char *sha1,
829 const char *required_type,
830 unsigned long *size,
831 unsigned char *sha1_ret);
833 extern struct object *peel_to_type(const char *name, int namelen,
834 struct object *o, enum object_type);
836 enum date_mode {
837 DATE_NORMAL = 0,
838 DATE_RELATIVE,
839 DATE_SHORT,
840 DATE_LOCAL,
841 DATE_ISO8601,
842 DATE_RFC2822,
843 DATE_RAW
844 };
846 const char *show_date(unsigned long time, int timezone, enum date_mode mode);
847 const char *show_date_relative(unsigned long time, int tz,
848 const struct timeval *now,
849 char *timebuf,
850 size_t timebuf_size);
851 int parse_date(const char *date, char *buf, int bufsize);
852 int parse_date_basic(const char *date, unsigned long *timestamp, int *offset);
853 void datestamp(char *buf, int bufsize);
854 #define approxidate(s) approxidate_careful((s), NULL)
855 unsigned long approxidate_careful(const char *, int *);
856 unsigned long approxidate_relative(const char *date, const struct timeval *now);
857 enum date_mode parse_date_format(const char *format);
859 #define IDENT_WARN_ON_NO_NAME 1
860 #define IDENT_ERROR_ON_NO_NAME 2
861 #define IDENT_NO_DATE 4
862 extern const char *git_author_info(int);
863 extern const char *git_committer_info(int);
864 extern const char *fmt_ident(const char *name, const char *email, const char *date_str, int);
865 extern const char *fmt_name(const char *name, const char *email);
866 extern const char *git_editor(void);
867 extern const char *git_pager(int stdout_is_tty);
869 struct checkout {
870 const char *base_dir;
871 int base_dir_len;
872 unsigned force:1,
873 quiet:1,
874 not_new:1,
875 refresh_cache:1;
876 };
878 extern int checkout_entry(struct cache_entry *ce, const struct checkout *state, char *topath);
880 struct cache_def {
881 char path[PATH_MAX + 1];
882 int len;
883 int flags;
884 int track_flags;
885 int prefix_len_stat_func;
886 };
888 extern int has_symlink_leading_path(const char *name, int len);
889 extern int threaded_has_symlink_leading_path(struct cache_def *, const char *, int);
890 extern int check_leading_path(const char *name, int len);
891 extern int has_dirs_only_path(const char *name, int len, int prefix_len);
892 extern void schedule_dir_for_removal(const char *name, int len);
893 extern void remove_scheduled_dirs(void);
895 extern struct alternate_object_database {
896 struct alternate_object_database *next;
897 char *name;
898 char base[FLEX_ARRAY]; /* more */
899 } *alt_odb_list;
900 extern void prepare_alt_odb(void);
901 extern void add_to_alternates_file(const char *reference);
902 typedef int alt_odb_fn(struct alternate_object_database *, void *);
903 extern void foreach_alt_odb(alt_odb_fn, void*);
905 struct pack_window {
906 struct pack_window *next;
907 unsigned char *base;
908 off_t offset;
909 size_t len;
910 unsigned int last_used;
911 unsigned int inuse_cnt;
912 };
914 extern struct packed_git {
915 struct packed_git *next;
916 struct pack_window *windows;
917 off_t pack_size;
918 const void *index_data;
919 size_t index_size;
920 uint32_t num_objects;
921 uint32_t num_bad_objects;
922 unsigned char *bad_object_sha1;
923 int index_version;
924 time_t mtime;
925 int pack_fd;
926 unsigned pack_local:1,
927 pack_keep:1,
928 do_not_close:1;
929 unsigned char sha1[20];
930 /* something like ".git/objects/pack/xxxxx.pack" */
931 char pack_name[FLEX_ARRAY]; /* more */
932 } *packed_git;
934 struct pack_entry {
935 off_t offset;
936 unsigned char sha1[20];
937 struct packed_git *p;
938 };
940 struct ref {
941 struct ref *next;
942 unsigned char old_sha1[20];
943 unsigned char new_sha1[20];
944 char *symref;
945 unsigned int force:1,
946 merge:1,
947 nonfastforward:1,
948 deletion:1;
949 enum {
950 REF_STATUS_NONE = 0,
951 REF_STATUS_OK,
952 REF_STATUS_REJECT_NONFASTFORWARD,
953 REF_STATUS_REJECT_NODELETE,
954 REF_STATUS_UPTODATE,
955 REF_STATUS_REMOTE_REJECT,
956 REF_STATUS_EXPECTING_REPORT
957 } status;
958 char *remote_status;
959 struct ref *peer_ref; /* when renaming */
960 char name[FLEX_ARRAY]; /* more */
961 };
963 #define REF_NORMAL (1u << 0)
964 #define REF_HEADS (1u << 1)
965 #define REF_TAGS (1u << 2)
967 extern struct ref *find_ref_by_name(const struct ref *list, const char *name);
969 #define CONNECT_VERBOSE (1u << 0)
970 extern char *git_getpass(const char *prompt);
971 extern struct child_process *git_connect(int fd[2], const char *url, const char *prog, int flags);
972 extern int finish_connect(struct child_process *conn);
973 extern int git_connection_is_socket(struct child_process *conn);
974 extern int path_match(const char *path, int nr, char **match);
975 struct extra_have_objects {
976 int nr, alloc;
977 unsigned char (*array)[20];
978 };
979 extern struct ref **get_remote_heads(int in, struct ref **list, int nr_match, char **match, unsigned int flags, struct extra_have_objects *);
980 extern int server_supports(const char *feature);
982 extern struct packed_git *parse_pack_index(unsigned char *sha1, const char *idx_path);
984 extern void prepare_packed_git(void);
985 extern void reprepare_packed_git(void);
986 extern void install_packed_git(struct packed_git *pack);
988 extern struct packed_git *find_sha1_pack(const unsigned char *sha1,
989 struct packed_git *packs);
991 extern void pack_report(void);
992 extern int open_pack_index(struct packed_git *);
993 extern void close_pack_index(struct packed_git *);
994 extern unsigned char *use_pack(struct packed_git *, struct pack_window **, off_t, unsigned int *);
995 extern void close_pack_windows(struct packed_git *);
996 extern void unuse_pack(struct pack_window **);
997 extern void free_pack_by_name(const char *);
998 extern void clear_delta_base_cache(void);
999 extern struct packed_git *add_packed_git(const char *, int, int);
1000 extern const unsigned char *nth_packed_object_sha1(struct packed_git *, uint32_t);
1001 extern off_t nth_packed_object_offset(const struct packed_git *, uint32_t);
1002 extern off_t find_pack_entry_one(const unsigned char *, struct packed_git *);
1003 extern void *unpack_entry(struct packed_git *, off_t, enum object_type *, unsigned long *);
1004 extern unsigned long unpack_object_header_buffer(const unsigned char *buf, unsigned long len, enum object_type *type, unsigned long *sizep);
1005 extern unsigned long get_size_from_delta(struct packed_git *, struct pack_window **, off_t);
1006 extern const char *packed_object_info_detail(struct packed_git *, off_t, unsigned long *, unsigned long *, unsigned int *, unsigned char *);
1008 /* Dumb servers support */
1009 extern int update_server_info(int);
1011 typedef int (*config_fn_t)(const char *, const char *, void *);
1012 extern int git_default_config(const char *, const char *, void *);
1013 extern int git_config_from_file(config_fn_t fn, const char *, void *);
1014 extern void git_config_push_parameter(const char *text);
1015 extern int git_config_from_parameters(config_fn_t fn, void *data);
1016 extern int git_config(config_fn_t fn, void *);
1017 extern int git_config_early(config_fn_t fn, void *, const char *repo_config);
1018 extern int git_parse_ulong(const char *, unsigned long *);
1019 extern int git_config_int(const char *, const char *);
1020 extern unsigned long git_config_ulong(const char *, const char *);
1021 extern int git_config_bool_or_int(const char *, const char *, int *);
1022 extern int git_config_bool(const char *, const char *);
1023 extern int git_config_maybe_bool(const char *, const char *);
1024 extern int git_config_string(const char **, const char *, const char *);
1025 extern int git_config_pathname(const char **, const char *, const char *);
1026 extern int git_config_set(const char *, const char *);
1027 extern int git_config_parse_key(const char *, char **, int *);
1028 extern int git_config_set_multivar(const char *, const char *, const char *, int);
1029 extern int git_config_rename_section(const char *, const char *);
1030 extern const char *git_etc_gitconfig(void);
1031 extern int check_repository_format_version(const char *var, const char *value, void *cb);
1032 extern int git_env_bool(const char *, int);
1033 extern int git_config_system(void);
1034 extern int config_error_nonbool(const char *);
1035 extern const char *get_log_output_encoding(void);
1036 extern const char *get_commit_output_encoding(void);
1038 extern const char *config_exclusive_filename;
1040 #define MAX_GITNAME (1000)
1041 extern char git_default_email[MAX_GITNAME];
1042 extern char git_default_name[MAX_GITNAME];
1043 #define IDENT_NAME_GIVEN 01
1044 #define IDENT_MAIL_GIVEN 02
1045 #define IDENT_ALL_GIVEN (IDENT_NAME_GIVEN|IDENT_MAIL_GIVEN)
1046 extern int user_ident_explicitly_given;
1047 extern int user_ident_sufficiently_given(void);
1049 extern const char *git_commit_encoding;
1050 extern const char *git_log_output_encoding;
1051 extern const char *git_mailmap_file;
1053 /* IO helper functions */
1054 extern void maybe_flush_or_die(FILE *, const char *);
1055 extern int copy_fd(int ifd, int ofd);
1056 extern int copy_file(const char *dst, const char *src, int mode);
1057 extern int copy_file_with_time(const char *dst, const char *src, int mode);
1058 extern void write_or_die(int fd, const void *buf, size_t count);
1059 extern int write_or_whine(int fd, const void *buf, size_t count, const char *msg);
1060 extern int write_or_whine_pipe(int fd, const void *buf, size_t count, const char *msg);
1061 extern void fsync_or_die(int fd, const char *);
1063 extern ssize_t read_in_full(int fd, void *buf, size_t count);
1064 extern ssize_t write_in_full(int fd, const void *buf, size_t count);
1065 static inline ssize_t write_str_in_full(int fd, const char *str)
1066 {
1067 return write_in_full(fd, str, strlen(str));
1068 }
1070 /* pager.c */
1071 extern void setup_pager(void);
1072 extern const char *pager_program;
1073 extern int pager_in_use(void);
1074 extern int pager_use_color;
1076 extern const char *editor_program;
1077 extern const char *askpass_program;
1078 extern const char *excludes_file;
1080 /* base85 */
1081 int decode_85(char *dst, const char *line, int linelen);
1082 void encode_85(char *buf, const unsigned char *data, int bytes);
1084 /* alloc.c */
1085 extern void *alloc_blob_node(void);
1086 extern void *alloc_tree_node(void);
1087 extern void *alloc_commit_node(void);
1088 extern void *alloc_tag_node(void);
1089 extern void *alloc_object_node(void);
1090 extern void alloc_report(void);
1092 /* trace.c */
1093 __attribute__((format (printf, 1, 2)))
1094 extern void trace_printf(const char *format, ...);
1095 extern void trace_vprintf(const char *key, const char *format, va_list ap);
1096 __attribute__((format (printf, 2, 3)))
1097 extern void trace_argv_printf(const char **argv, const char *format, ...);
1098 extern void trace_repo_setup(const char *prefix);
1099 extern int trace_want(const char *key);
1100 extern void trace_strbuf(const char *key, const struct strbuf *buf);
1102 void packet_trace_identity(const char *prog);
1104 /* convert.c */
1105 /* returns 1 if *dst was used */
1106 extern int convert_to_git(const char *path, const char *src, size_t len,
1107 struct strbuf *dst, enum safe_crlf checksafe);
1108 extern int convert_to_working_tree(const char *path, const char *src, size_t len, struct strbuf *dst);
1109 extern int renormalize_buffer(const char *path, const char *src, size_t len, struct strbuf *dst);
1111 /* add */
1112 /*
1113 * return 0 if success, 1 - if addition of a file failed and
1114 * ADD_FILES_IGNORE_ERRORS was specified in flags
1115 */
1116 int add_files_to_cache(const char *prefix, const char **pathspec, int flags);
1118 /* diff.c */
1119 extern int diff_auto_refresh_index;
1121 /* match-trees.c */
1122 void shift_tree(const unsigned char *, const unsigned char *, unsigned char *, int);
1123 void shift_tree_by(const unsigned char *, const unsigned char *, unsigned char *, const char *);
1125 /*
1126 * whitespace rules.
1127 * used by both diff and apply
1128 * last two digits are tab width
1129 */
1130 #define WS_BLANK_AT_EOL 0100
1131 #define WS_SPACE_BEFORE_TAB 0200
1132 #define WS_INDENT_WITH_NON_TAB 0400
1133 #define WS_CR_AT_EOL 01000
1134 #define WS_BLANK_AT_EOF 02000
1135 #define WS_TAB_IN_INDENT 04000
1136 #define WS_TRAILING_SPACE (WS_BLANK_AT_EOL|WS_BLANK_AT_EOF)
1137 #define WS_DEFAULT_RULE (WS_TRAILING_SPACE|WS_SPACE_BEFORE_TAB|8)
1138 #define WS_TAB_WIDTH_MASK 077
1139 extern unsigned whitespace_rule_cfg;
1140 extern unsigned whitespace_rule(const char *);
1141 extern unsigned parse_whitespace_rule(const char *);
1142 extern unsigned ws_check(const char *line, int len, unsigned ws_rule);
1143 extern void ws_check_emit(const char *line, int len, unsigned ws_rule, FILE *stream, const char *set, const char *reset, const char *ws);
1144 extern char *whitespace_error_string(unsigned ws);
1145 extern void ws_fix_copy(struct strbuf *, const char *, int, unsigned, int *);
1146 extern int ws_blank_line(const char *line, int len, unsigned ws_rule);
1147 #define ws_tab_width(rule) ((rule) & WS_TAB_WIDTH_MASK)
1149 /* ls-files */
1150 int report_path_error(const char *ps_matched, const char **pathspec, int prefix_offset);
1151 void overlay_tree_on_cache(const char *tree_name, const char *prefix);
1153 char *alias_lookup(const char *alias);
1154 int split_cmdline(char *cmdline, const char ***argv);
1155 /* Takes a negative value returned by split_cmdline */
1156 const char *split_cmdline_strerror(int cmdline_errno);
1158 /* git.c */
1159 struct startup_info {
1160 int have_repository;
1161 const char *prefix;
1162 };
1163 extern struct startup_info *startup_info;
1165 /* builtin/merge.c */
1166 int checkout_fast_forward(const unsigned char *from, const unsigned char *to);
1168 #endif /* CACHE_H */