push: Provide situational hints for non-fast-forward errors
[git/git.git] / cache.h
1 #ifndef CACHE_H
2 #define CACHE_H
3
4 #include "git-compat-util.h"
5 #include "strbuf.h"
6 #include "hash.h"
7 #include "advice.h"
8 #include "gettext.h"
9 #include "convert.h"
10
11 #include SHA1_HEADER
12 #ifndef git_SHA_CTX
13 #define git_SHA_CTX SHA_CTX
14 #define git_SHA1_Init SHA1_Init
15 #define git_SHA1_Update SHA1_Update
16 #define git_SHA1_Final SHA1_Final
17 #endif
18
19 #include <zlib.h>
20 typedef struct git_zstream {
21 z_stream z;
22 unsigned long avail_in;
23 unsigned long avail_out;
24 unsigned long total_in;
25 unsigned long total_out;
26 unsigned char *next_in;
27 unsigned char *next_out;
28 } git_zstream;
29
30 void git_inflate_init(git_zstream *);
31 void git_inflate_init_gzip_only(git_zstream *);
32 void git_inflate_end(git_zstream *);
33 int git_inflate(git_zstream *, int flush);
34
35 void git_deflate_init(git_zstream *, int level);
36 void git_deflate_init_gzip(git_zstream *, int level);
37 void git_deflate_end(git_zstream *);
38 int git_deflate_abort(git_zstream *);
39 int git_deflate_end_gently(git_zstream *);
40 int git_deflate(git_zstream *, int flush);
41 unsigned long git_deflate_bound(git_zstream *, unsigned long);
42
43 #if defined(DT_UNKNOWN) && !defined(NO_D_TYPE_IN_DIRENT)
44 #define DTYPE(de) ((de)->d_type)
45 #else
46 #undef DT_UNKNOWN
47 #undef DT_DIR
48 #undef DT_REG
49 #undef DT_LNK
50 #define DT_UNKNOWN 0
51 #define DT_DIR 1
52 #define DT_REG 2
53 #define DT_LNK 3
54 #define DTYPE(de) DT_UNKNOWN
55 #endif
56
57 /* unknown mode (impossible combination S_IFIFO|S_IFCHR) */
58 #define S_IFINVALID 0030000
59
60 /*
61 * A "directory link" is a link to another git directory.
62 *
63 * The value 0160000 is not normally a valid mode, and
64 * also just happens to be S_IFDIR + S_IFLNK
65 *
66 * NOTE! We *really* shouldn't depend on the S_IFxxx macros
67 * always having the same values everywhere. We should use
68 * our internal git values for these things, and then we can
69 * translate that to the OS-specific value. It just so
70 * happens that everybody shares the same bit representation
71 * in the UNIX world (and apparently wider too..)
72 */
73 #define S_IFGITLINK 0160000
74 #define S_ISGITLINK(m) (((m) & S_IFMT) == S_IFGITLINK)
75
76 /*
77 * Intensive research over the course of many years has shown that
78 * port 9418 is totally unused by anything else. Or
79 *
80 * Your search - "port 9418" - did not match any documents.
81 *
82 * as www.google.com puts it.
83 *
84 * This port has been properly assigned for git use by IANA:
85 * git (Assigned-9418) [I06-050728-0001].
86 *
87 * git 9418/tcp git pack transfer service
88 * git 9418/udp git pack transfer service
89 *
90 * with Linus Torvalds <torvalds@osdl.org> as the point of
91 * contact. September 2005.
92 *
93 * See http://www.iana.org/assignments/port-numbers
94 */
95 #define DEFAULT_GIT_PORT 9418
96
97 /*
98 * Basic data structures for the directory cache
99 */
100
101 #define CACHE_SIGNATURE 0x44495243 /* "DIRC" */
102 struct cache_header {
103 unsigned int hdr_signature;
104 unsigned int hdr_version;
105 unsigned int hdr_entries;
106 };
107
108 /*
109 * The "cache_time" is just the low 32 bits of the
110 * time. It doesn't matter if it overflows - we only
111 * check it for equality in the 32 bits we save.
112 */
113 struct cache_time {
114 unsigned int sec;
115 unsigned int nsec;
116 };
117
118 /*
119 * dev/ino/uid/gid/size are also just tracked to the low 32 bits
120 * Again - this is just a (very strong in practice) heuristic that
121 * the inode hasn't changed.
122 *
123 * We save the fields in big-endian order to allow using the
124 * index file over NFS transparently.
125 */
126 struct ondisk_cache_entry {
127 struct cache_time ctime;
128 struct cache_time mtime;
129 unsigned int dev;
130 unsigned int ino;
131 unsigned int mode;
132 unsigned int uid;
133 unsigned int gid;
134 unsigned int size;
135 unsigned char sha1[20];
136 unsigned short flags;
137 char name[FLEX_ARRAY]; /* more */
138 };
139
140 /*
141 * This struct is used when CE_EXTENDED bit is 1
142 * The struct must match ondisk_cache_entry exactly from
143 * ctime till flags
144 */
145 struct ondisk_cache_entry_extended {
146 struct cache_time ctime;
147 struct cache_time mtime;
148 unsigned int dev;
149 unsigned int ino;
150 unsigned int mode;
151 unsigned int uid;
152 unsigned int gid;
153 unsigned int size;
154 unsigned char sha1[20];
155 unsigned short flags;
156 unsigned short flags2;
157 char name[FLEX_ARRAY]; /* more */
158 };
159
160 struct cache_entry {
161 struct cache_time ce_ctime;
162 struct cache_time ce_mtime;
163 unsigned int ce_dev;
164 unsigned int ce_ino;
165 unsigned int ce_mode;
166 unsigned int ce_uid;
167 unsigned int ce_gid;
168 unsigned int ce_size;
169 unsigned int ce_flags;
170 unsigned char sha1[20];
171 struct cache_entry *next;
172 struct cache_entry *dir_next;
173 char name[FLEX_ARRAY]; /* more */
174 };
175
176 #define CE_NAMEMASK (0x0fff)
177 #define CE_STAGEMASK (0x3000)
178 #define CE_EXTENDED (0x4000)
179 #define CE_VALID (0x8000)
180 #define CE_STAGESHIFT 12
181
182 /*
183 * Range 0xFFFF0000 in ce_flags is divided into
184 * two parts: in-memory flags and on-disk ones.
185 * Flags in CE_EXTENDED_FLAGS will get saved on-disk
186 * if you want to save a new flag, add it in
187 * CE_EXTENDED_FLAGS
188 *
189 * In-memory only flags
190 */
191 #define CE_UPDATE (1 << 16)
192 #define CE_REMOVE (1 << 17)
193 #define CE_UPTODATE (1 << 18)
194 #define CE_ADDED (1 << 19)
195
196 #define CE_HASHED (1 << 20)
197 #define CE_UNHASHED (1 << 21)
198 #define CE_WT_REMOVE (1 << 22) /* remove in work directory */
199 #define CE_CONFLICTED (1 << 23)
200
201 #define CE_UNPACKED (1 << 24)
202 #define CE_NEW_SKIP_WORKTREE (1 << 25)
203
204 /*
205 * Extended on-disk flags
206 */
207 #define CE_INTENT_TO_ADD (1 << 29)
208 #define CE_SKIP_WORKTREE (1 << 30)
209 /* CE_EXTENDED2 is for future extension */
210 #define CE_EXTENDED2 (1 << 31)
211
212 #define CE_EXTENDED_FLAGS (CE_INTENT_TO_ADD | CE_SKIP_WORKTREE)
213
214 /*
215 * Safeguard to avoid saving wrong flags:
216 * - CE_EXTENDED2 won't get saved until its semantic is known
217 * - Bits in 0x0000FFFF have been saved in ce_flags already
218 * - Bits in 0x003F0000 are currently in-memory flags
219 */
220 #if CE_EXTENDED_FLAGS & 0x803FFFFF
221 #error "CE_EXTENDED_FLAGS out of range"
222 #endif
223
224 /*
225 * Copy the sha1 and stat state of a cache entry from one to
226 * another. But we never change the name, or the hash state!
227 */
228 #define CE_STATE_MASK (CE_HASHED | CE_UNHASHED)
229 static inline void copy_cache_entry(struct cache_entry *dst, struct cache_entry *src)
230 {
231 unsigned int state = dst->ce_flags & CE_STATE_MASK;
232
233 /* Don't copy hash chain and name */
234 memcpy(dst, src, offsetof(struct cache_entry, next));
235
236 /* Restore the hash state */
237 dst->ce_flags = (dst->ce_flags & ~CE_STATE_MASK) | state;
238 }
239
240 static inline unsigned create_ce_flags(size_t len, unsigned stage)
241 {
242 if (len >= CE_NAMEMASK)
243 len = CE_NAMEMASK;
244 return (len | (stage << CE_STAGESHIFT));
245 }
246
247 static inline size_t ce_namelen(const struct cache_entry *ce)
248 {
249 size_t len = ce->ce_flags & CE_NAMEMASK;
250 if (len < CE_NAMEMASK)
251 return len;
252 return strlen(ce->name + CE_NAMEMASK) + CE_NAMEMASK;
253 }
254
255 #define ce_size(ce) cache_entry_size(ce_namelen(ce))
256 #define ondisk_ce_size(ce) (((ce)->ce_flags & CE_EXTENDED) ? \
257 ondisk_cache_entry_extended_size(ce_namelen(ce)) : \
258 ondisk_cache_entry_size(ce_namelen(ce)))
259 #define ce_stage(ce) ((CE_STAGEMASK & (ce)->ce_flags) >> CE_STAGESHIFT)
260 #define ce_uptodate(ce) ((ce)->ce_flags & CE_UPTODATE)
261 #define ce_skip_worktree(ce) ((ce)->ce_flags & CE_SKIP_WORKTREE)
262 #define ce_mark_uptodate(ce) ((ce)->ce_flags |= CE_UPTODATE)
263
264 #define ce_permissions(mode) (((mode) & 0100) ? 0755 : 0644)
265 static inline unsigned int create_ce_mode(unsigned int mode)
266 {
267 if (S_ISLNK(mode))
268 return S_IFLNK;
269 if (S_ISDIR(mode) || S_ISGITLINK(mode))
270 return S_IFGITLINK;
271 return S_IFREG | ce_permissions(mode);
272 }
273 static inline unsigned int ce_mode_from_stat(struct cache_entry *ce, unsigned int mode)
274 {
275 extern int trust_executable_bit, has_symlinks;
276 if (!has_symlinks && S_ISREG(mode) &&
277 ce && S_ISLNK(ce->ce_mode))
278 return ce->ce_mode;
279 if (!trust_executable_bit && S_ISREG(mode)) {
280 if (ce && S_ISREG(ce->ce_mode))
281 return ce->ce_mode;
282 return create_ce_mode(0666);
283 }
284 return create_ce_mode(mode);
285 }
286 static inline int ce_to_dtype(const struct cache_entry *ce)
287 {
288 unsigned ce_mode = ntohl(ce->ce_mode);
289 if (S_ISREG(ce_mode))
290 return DT_REG;
291 else if (S_ISDIR(ce_mode) || S_ISGITLINK(ce_mode))
292 return DT_DIR;
293 else if (S_ISLNK(ce_mode))
294 return DT_LNK;
295 else
296 return DT_UNKNOWN;
297 }
298 static inline unsigned int canon_mode(unsigned int mode)
299 {
300 if (S_ISREG(mode))
301 return S_IFREG | ce_permissions(mode);
302 if (S_ISLNK(mode))
303 return S_IFLNK;
304 if (S_ISDIR(mode))
305 return S_IFDIR;
306 return S_IFGITLINK;
307 }
308
309 #define flexible_size(STRUCT,len) ((offsetof(struct STRUCT,name) + (len) + 8) & ~7)
310 #define cache_entry_size(len) (offsetof(struct cache_entry,name) + (len) + 1)
311 #define ondisk_cache_entry_size(len) flexible_size(ondisk_cache_entry,len)
312 #define ondisk_cache_entry_extended_size(len) flexible_size(ondisk_cache_entry_extended,len)
313
314 struct index_state {
315 struct cache_entry **cache;
316 unsigned int cache_nr, cache_alloc, cache_changed;
317 struct string_list *resolve_undo;
318 struct cache_tree *cache_tree;
319 struct cache_time timestamp;
320 unsigned name_hash_initialized : 1,
321 initialized : 1;
322 struct hash_table name_hash;
323 };
324
325 extern struct index_state the_index;
326
327 /* Name hashing */
328 extern void add_name_hash(struct index_state *istate, struct cache_entry *ce);
329 /*
330 * We don't actually *remove* it, we can just mark it invalid so that
331 * we won't find it in lookups.
332 *
333 * Not only would we have to search the lists (simple enough), but
334 * we'd also have to rehash other hash buckets in case this makes the
335 * hash bucket empty (common). So it's much better to just mark
336 * it.
337 */
338 static inline void remove_name_hash(struct cache_entry *ce)
339 {
340 ce->ce_flags |= CE_UNHASHED;
341 }
342
343
344 #ifndef NO_THE_INDEX_COMPATIBILITY_MACROS
345 #define active_cache (the_index.cache)
346 #define active_nr (the_index.cache_nr)
347 #define active_alloc (the_index.cache_alloc)
348 #define active_cache_changed (the_index.cache_changed)
349 #define active_cache_tree (the_index.cache_tree)
350
351 #define read_cache() read_index(&the_index)
352 #define read_cache_from(path) read_index_from(&the_index, (path))
353 #define read_cache_preload(pathspec) read_index_preload(&the_index, (pathspec))
354 #define is_cache_unborn() is_index_unborn(&the_index)
355 #define read_cache_unmerged() read_index_unmerged(&the_index)
356 #define write_cache(newfd, cache, entries) write_index(&the_index, (newfd))
357 #define discard_cache() discard_index(&the_index)
358 #define unmerged_cache() unmerged_index(&the_index)
359 #define cache_name_pos(name, namelen) index_name_pos(&the_index,(name),(namelen))
360 #define add_cache_entry(ce, option) add_index_entry(&the_index, (ce), (option))
361 #define rename_cache_entry_at(pos, new_name) rename_index_entry_at(&the_index, (pos), (new_name))
362 #define remove_cache_entry_at(pos) remove_index_entry_at(&the_index, (pos))
363 #define remove_file_from_cache(path) remove_file_from_index(&the_index, (path))
364 #define add_to_cache(path, st, flags) add_to_index(&the_index, (path), (st), (flags))
365 #define add_file_to_cache(path, flags) add_file_to_index(&the_index, (path), (flags))
366 #define refresh_cache(flags) refresh_index(&the_index, (flags), NULL, NULL, NULL)
367 #define ce_match_stat(ce, st, options) ie_match_stat(&the_index, (ce), (st), (options))
368 #define ce_modified(ce, st, options) ie_modified(&the_index, (ce), (st), (options))
369 #define cache_name_exists(name, namelen, igncase) index_name_exists(&the_index, (name), (namelen), (igncase))
370 #define cache_name_is_other(name, namelen) index_name_is_other(&the_index, (name), (namelen))
371 #define resolve_undo_clear() resolve_undo_clear_index(&the_index)
372 #define unmerge_cache_entry_at(at) unmerge_index_entry_at(&the_index, at)
373 #define unmerge_cache(pathspec) unmerge_index(&the_index, pathspec)
374 #endif
375
376 enum object_type {
377 OBJ_BAD = -1,
378 OBJ_NONE = 0,
379 OBJ_COMMIT = 1,
380 OBJ_TREE = 2,
381 OBJ_BLOB = 3,
382 OBJ_TAG = 4,
383 /* 5 for future expansion */
384 OBJ_OFS_DELTA = 6,
385 OBJ_REF_DELTA = 7,
386 OBJ_ANY,
387 OBJ_MAX
388 };
389
390 static inline enum object_type object_type(unsigned int mode)
391 {
392 return S_ISDIR(mode) ? OBJ_TREE :
393 S_ISGITLINK(mode) ? OBJ_COMMIT :
394 OBJ_BLOB;
395 }
396
397 #define GIT_DIR_ENVIRONMENT "GIT_DIR"
398 #define GIT_NAMESPACE_ENVIRONMENT "GIT_NAMESPACE"
399 #define GIT_WORK_TREE_ENVIRONMENT "GIT_WORK_TREE"
400 #define DEFAULT_GIT_DIR_ENVIRONMENT ".git"
401 #define DB_ENVIRONMENT "GIT_OBJECT_DIRECTORY"
402 #define INDEX_ENVIRONMENT "GIT_INDEX_FILE"
403 #define GRAFT_ENVIRONMENT "GIT_GRAFT_FILE"
404 #define TEMPLATE_DIR_ENVIRONMENT "GIT_TEMPLATE_DIR"
405 #define CONFIG_ENVIRONMENT "GIT_CONFIG"
406 #define CONFIG_DATA_ENVIRONMENT "GIT_CONFIG_PARAMETERS"
407 #define EXEC_PATH_ENVIRONMENT "GIT_EXEC_PATH"
408 #define CEILING_DIRECTORIES_ENVIRONMENT "GIT_CEILING_DIRECTORIES"
409 #define NO_REPLACE_OBJECTS_ENVIRONMENT "GIT_NO_REPLACE_OBJECTS"
410 #define GITATTRIBUTES_FILE ".gitattributes"
411 #define INFOATTRIBUTES_FILE "info/attributes"
412 #define ATTRIBUTE_MACRO_PREFIX "[attr]"
413 #define GIT_NOTES_REF_ENVIRONMENT "GIT_NOTES_REF"
414 #define GIT_NOTES_DEFAULT_REF "refs/notes/commits"
415 #define GIT_NOTES_DISPLAY_REF_ENVIRONMENT "GIT_NOTES_DISPLAY_REF"
416 #define GIT_NOTES_REWRITE_REF_ENVIRONMENT "GIT_NOTES_REWRITE_REF"
417 #define GIT_NOTES_REWRITE_MODE_ENVIRONMENT "GIT_NOTES_REWRITE_MODE"
418
419 /*
420 * Repository-local GIT_* environment variables
421 * The array is NULL-terminated to simplify its usage in contexts such
422 * environment creation or simple walk of the list.
423 * The number of non-NULL entries is available as a macro.
424 */
425 #define LOCAL_REPO_ENV_SIZE 9
426 extern const char *const local_repo_env[LOCAL_REPO_ENV_SIZE + 1];
427
428 extern int is_bare_repository_cfg;
429 extern int is_bare_repository(void);
430 extern int is_inside_git_dir(void);
431 extern char *git_work_tree_cfg;
432 extern int is_inside_work_tree(void);
433 extern int have_git_dir(void);
434 extern const char *get_git_dir(void);
435 extern int is_git_directory(const char *path);
436 extern char *get_object_directory(void);
437 extern char *get_index_file(void);
438 extern char *get_graft_file(void);
439 extern int set_git_dir(const char *path);
440 extern const char *get_git_namespace(void);
441 extern const char *strip_namespace(const char *namespaced_ref);
442 extern const char *get_git_work_tree(void);
443 extern const char *read_gitfile(const char *path);
444 extern const char *resolve_gitdir(const char *suspect);
445 extern void set_git_work_tree(const char *tree);
446
447 #define ALTERNATE_DB_ENVIRONMENT "GIT_ALTERNATE_OBJECT_DIRECTORIES"
448
449 extern const char **get_pathspec(const char *prefix, const char **pathspec);
450 extern void setup_work_tree(void);
451 extern const char *setup_git_directory_gently(int *);
452 extern const char *setup_git_directory(void);
453 extern char *prefix_path(const char *prefix, int len, const char *path);
454 extern const char *prefix_filename(const char *prefix, int len, const char *path);
455 extern int check_filename(const char *prefix, const char *name);
456 extern void verify_filename(const char *prefix, const char *name);
457 extern void verify_non_filename(const char *prefix, const char *name);
458
459 #define INIT_DB_QUIET 0x0001
460
461 extern int set_git_dir_init(const char *git_dir, const char *real_git_dir, int);
462 extern int init_db(const char *template_dir, unsigned int flags);
463
464 #define alloc_nr(x) (((x)+16)*3/2)
465
466 /*
467 * Realloc the buffer pointed at by variable 'x' so that it can hold
468 * at least 'nr' entries; the number of entries currently allocated
469 * is 'alloc', using the standard growing factor alloc_nr() macro.
470 *
471 * DO NOT USE any expression with side-effect for 'x', 'nr', or 'alloc'.
472 */
473 #define ALLOC_GROW(x, nr, alloc) \
474 do { \
475 if ((nr) > alloc) { \
476 if (alloc_nr(alloc) < (nr)) \
477 alloc = (nr); \
478 else \
479 alloc = alloc_nr(alloc); \
480 x = xrealloc((x), alloc * sizeof(*(x))); \
481 } \
482 } while (0)
483
484 /* Initialize and use the cache information */
485 extern int read_index(struct index_state *);
486 extern int read_index_preload(struct index_state *, const char **pathspec);
487 extern int read_index_from(struct index_state *, const char *path);
488 extern int is_index_unborn(struct index_state *);
489 extern int read_index_unmerged(struct index_state *);
490 extern int write_index(struct index_state *, int newfd);
491 extern int discard_index(struct index_state *);
492 extern int unmerged_index(const struct index_state *);
493 extern int verify_path(const char *path);
494 extern struct cache_entry *index_name_exists(struct index_state *istate, const char *name, int namelen, int igncase);
495 extern int index_name_pos(const struct index_state *, const char *name, int namelen);
496 #define ADD_CACHE_OK_TO_ADD 1 /* Ok to add */
497 #define ADD_CACHE_OK_TO_REPLACE 2 /* Ok to replace file/directory */
498 #define ADD_CACHE_SKIP_DFCHECK 4 /* Ok to skip DF conflict checks */
499 #define ADD_CACHE_JUST_APPEND 8 /* Append only; tree.c::read_tree() */
500 #define ADD_CACHE_NEW_ONLY 16 /* Do not replace existing ones */
501 extern int add_index_entry(struct index_state *, struct cache_entry *ce, int option);
502 extern void rename_index_entry_at(struct index_state *, int pos, const char *new_name);
503 extern int remove_index_entry_at(struct index_state *, int pos);
504 extern void remove_marked_cache_entries(struct index_state *istate);
505 extern int remove_file_from_index(struct index_state *, const char *path);
506 #define ADD_CACHE_VERBOSE 1
507 #define ADD_CACHE_PRETEND 2
508 #define ADD_CACHE_IGNORE_ERRORS 4
509 #define ADD_CACHE_IGNORE_REMOVAL 8
510 #define ADD_CACHE_INTENT 16
511 extern int add_to_index(struct index_state *, const char *path, struct stat *, int flags);
512 extern int add_file_to_index(struct index_state *, const char *path, int flags);
513 extern struct cache_entry *make_cache_entry(unsigned int mode, const unsigned char *sha1, const char *path, int stage, int refresh);
514 extern int ce_same_name(struct cache_entry *a, struct cache_entry *b);
515 extern int index_name_is_other(const struct index_state *, const char *, int);
516
517 /* do stat comparison even if CE_VALID is true */
518 #define CE_MATCH_IGNORE_VALID 01
519 /* do not check the contents but report dirty on racily-clean entries */
520 #define CE_MATCH_RACY_IS_DIRTY 02
521 /* do stat comparison even if CE_SKIP_WORKTREE is true */
522 #define CE_MATCH_IGNORE_SKIP_WORKTREE 04
523 extern int ie_match_stat(const struct index_state *, struct cache_entry *, struct stat *, unsigned int);
524 extern int ie_modified(const struct index_state *, struct cache_entry *, struct stat *, unsigned int);
525
526 struct pathspec {
527 const char **raw; /* get_pathspec() result, not freed by free_pathspec() */
528 int nr;
529 unsigned int has_wildcard:1;
530 unsigned int recursive:1;
531 int max_depth;
532 struct pathspec_item {
533 const char *match;
534 int len;
535 unsigned int use_wildcard:1;
536 } *items;
537 };
538
539 extern int init_pathspec(struct pathspec *, const char **);
540 extern void free_pathspec(struct pathspec *);
541 extern int ce_path_match(const struct cache_entry *ce, const struct pathspec *pathspec);
542
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);
547 extern void fill_stat_cache_info(struct cache_entry *ce, struct stat *st);
548
549 #define REFRESH_REALLY 0x0001 /* ignore_valid */
550 #define REFRESH_UNMERGED 0x0002 /* allow unmerged */
551 #define REFRESH_QUIET 0x0004 /* be quiet about it */
552 #define REFRESH_IGNORE_MISSING 0x0008 /* ignore non-existent */
553 #define REFRESH_IGNORE_SUBMODULES 0x0010 /* ignore submodules */
554 #define REFRESH_IN_PORCELAIN 0x0020 /* user friendly output, not "needs update" */
555 extern int refresh_index(struct index_state *, unsigned int flags, const char **pathspec, char *seen, const char *header_msg);
556
557 struct lock_file {
558 struct lock_file *next;
559 int fd;
560 pid_t owner;
561 char on_list;
562 char filename[PATH_MAX];
563 };
564 #define LOCK_DIE_ON_ERROR 1
565 #define LOCK_NODEREF 2
566 extern int unable_to_lock_error(const char *path, int err);
567 extern NORETURN void unable_to_lock_index_die(const char *path, int err);
568 extern int hold_lock_file_for_update(struct lock_file *, const char *path, int);
569 extern int hold_lock_file_for_append(struct lock_file *, const char *path, int);
570 extern int commit_lock_file(struct lock_file *);
571 extern void update_index_if_able(struct index_state *, struct lock_file *);
572
573 extern int hold_locked_index(struct lock_file *, int);
574 extern int commit_locked_index(struct lock_file *);
575 extern void set_alternate_index_output(const char *);
576 extern int close_lock_file(struct lock_file *);
577 extern void rollback_lock_file(struct lock_file *);
578 extern int delete_ref(const char *, const unsigned char *sha1, int delopt);
579
580 /* Environment bits from configuration mechanism */
581 extern int trust_executable_bit;
582 extern int trust_ctime;
583 extern int quote_path_fully;
584 extern int has_symlinks;
585 extern int minimum_abbrev, default_abbrev;
586 extern int ignore_case;
587 extern int assume_unchanged;
588 extern int prefer_symlink_refs;
589 extern int log_all_ref_updates;
590 extern int warn_ambiguous_refs;
591 extern int shared_repository;
592 extern const char *apply_default_whitespace;
593 extern const char *apply_default_ignorewhitespace;
594 extern const char *git_attributes_file;
595 extern int zlib_compression_level;
596 extern int core_compression_level;
597 extern int core_compression_seen;
598 extern size_t packed_git_window_size;
599 extern size_t packed_git_limit;
600 extern size_t delta_base_cache_limit;
601 extern unsigned long big_file_threshold;
602 extern unsigned long pack_size_limit_cfg;
603 extern int read_replace_refs;
604 extern int fsync_object_files;
605 extern int core_preload_index;
606 extern int core_apply_sparse_checkout;
607
608 enum branch_track {
609 BRANCH_TRACK_UNSPECIFIED = -1,
610 BRANCH_TRACK_NEVER = 0,
611 BRANCH_TRACK_REMOTE,
612 BRANCH_TRACK_ALWAYS,
613 BRANCH_TRACK_EXPLICIT,
614 BRANCH_TRACK_OVERRIDE
615 };
616
617 enum rebase_setup_type {
618 AUTOREBASE_NEVER = 0,
619 AUTOREBASE_LOCAL,
620 AUTOREBASE_REMOTE,
621 AUTOREBASE_ALWAYS
622 };
623
624 enum push_default_type {
625 PUSH_DEFAULT_NOTHING = 0,
626 PUSH_DEFAULT_MATCHING,
627 PUSH_DEFAULT_UPSTREAM,
628 PUSH_DEFAULT_CURRENT,
629 PUSH_DEFAULT_UNSPECIFIED
630 };
631
632 extern enum branch_track git_branch_track;
633 extern enum rebase_setup_type autorebase;
634 extern enum push_default_type push_default;
635
636 enum object_creation_mode {
637 OBJECT_CREATION_USES_HARDLINKS = 0,
638 OBJECT_CREATION_USES_RENAMES = 1
639 };
640
641 extern enum object_creation_mode object_creation_mode;
642
643 extern char *notes_ref_name;
644
645 extern int grafts_replace_parents;
646
647 #define GIT_REPO_VERSION 0
648 extern int repository_format_version;
649 extern int check_repository_format(void);
650
651 #define MTIME_CHANGED 0x0001
652 #define CTIME_CHANGED 0x0002
653 #define OWNER_CHANGED 0x0004
654 #define MODE_CHANGED 0x0008
655 #define INODE_CHANGED 0x0010
656 #define DATA_CHANGED 0x0020
657 #define TYPE_CHANGED 0x0040
658
659 extern char *mksnpath(char *buf, size_t n, const char *fmt, ...)
660 __attribute__((format (printf, 3, 4)));
661 extern char *git_snpath(char *buf, size_t n, const char *fmt, ...)
662 __attribute__((format (printf, 3, 4)));
663 extern char *git_pathdup(const char *fmt, ...)
664 __attribute__((format (printf, 1, 2)));
665
666 /* Return a statically allocated filename matching the sha1 signature */
667 extern char *mkpath(const char *fmt, ...) __attribute__((format (printf, 1, 2)));
668 extern char *git_path(const char *fmt, ...) __attribute__((format (printf, 1, 2)));
669 extern char *git_path_submodule(const char *path, const char *fmt, ...)
670 __attribute__((format (printf, 2, 3)));
671
672 extern char *sha1_file_name(const unsigned char *sha1);
673 extern char *sha1_pack_name(const unsigned char *sha1);
674 extern char *sha1_pack_index_name(const unsigned char *sha1);
675 extern const char *find_unique_abbrev(const unsigned char *sha1, int);
676 extern const unsigned char null_sha1[20];
677
678 static inline int hashcmp(const unsigned char *sha1, const unsigned char *sha2)
679 {
680 int i;
681
682 for (i = 0; i < 20; i++, sha1++, sha2++) {
683 if (*sha1 != *sha2)
684 return *sha1 - *sha2;
685 }
686
687 return 0;
688 }
689
690 static inline int is_null_sha1(const unsigned char *sha1)
691 {
692 return !hashcmp(sha1, null_sha1);
693 }
694
695 static inline void hashcpy(unsigned char *sha_dst, const unsigned char *sha_src)
696 {
697 memcpy(sha_dst, sha_src, 20);
698 }
699 static inline void hashclr(unsigned char *hash)
700 {
701 memset(hash, 0, 20);
702 }
703
704 #define EMPTY_TREE_SHA1_HEX \
705 "4b825dc642cb6eb9a060e54bf8d69288fbee4904"
706 #define EMPTY_TREE_SHA1_BIN_LITERAL \
707 "\x4b\x82\x5d\xc6\x42\xcb\x6e\xb9\xa0\x60" \
708 "\xe5\x4b\xf8\xd6\x92\x88\xfb\xee\x49\x04"
709 #define EMPTY_TREE_SHA1_BIN \
710 ((const unsigned char *) EMPTY_TREE_SHA1_BIN_LITERAL)
711
712 int git_mkstemp(char *path, size_t n, const char *template);
713
714 int git_mkstemps(char *path, size_t n, const char *template, int suffix_len);
715
716 /* set default permissions by passing mode arguments to open(2) */
717 int git_mkstemps_mode(char *pattern, int suffix_len, int mode);
718 int git_mkstemp_mode(char *pattern, int mode);
719
720 /*
721 * NOTE NOTE NOTE!!
722 *
723 * PERM_UMASK, OLD_PERM_GROUP and OLD_PERM_EVERYBODY enumerations must
724 * not be changed. Old repositories have core.sharedrepository written in
725 * numeric format, and therefore these values are preserved for compatibility
726 * reasons.
727 */
728 enum sharedrepo {
729 PERM_UMASK = 0,
730 OLD_PERM_GROUP = 1,
731 OLD_PERM_EVERYBODY = 2,
732 PERM_GROUP = 0660,
733 PERM_EVERYBODY = 0664
734 };
735 int git_config_perm(const char *var, const char *value);
736 int set_shared_perm(const char *path, int mode);
737 #define adjust_shared_perm(path) set_shared_perm((path), 0)
738 int safe_create_leading_directories(char *path);
739 int safe_create_leading_directories_const(const char *path);
740 int mkdir_in_gitdir(const char *path);
741 extern char *expand_user_path(const char *path);
742 const char *enter_repo(const char *path, int strict);
743 static inline int is_absolute_path(const char *path)
744 {
745 return is_dir_sep(path[0]) || has_dos_drive_prefix(path);
746 }
747 int is_directory(const char *);
748 const char *real_path(const char *path);
749 const char *absolute_path(const char *path);
750 const char *relative_path(const char *abs, const char *base);
751 int normalize_path_copy(char *dst, const char *src);
752 int longest_ancestor_length(const char *path, const char *prefix_list);
753 char *strip_path_suffix(const char *path, const char *suffix);
754 int daemon_avoid_alias(const char *path);
755 int offset_1st_component(const char *path);
756
757 /* object replacement */
758 #define READ_SHA1_FILE_REPLACE 1
759 extern void *read_sha1_file_extended(const unsigned char *sha1, enum object_type *type, unsigned long *size, unsigned flag);
760 static inline void *read_sha1_file(const unsigned char *sha1, enum object_type *type, unsigned long *size)
761 {
762 return read_sha1_file_extended(sha1, type, size, READ_SHA1_FILE_REPLACE);
763 }
764 extern const unsigned char *do_lookup_replace_object(const unsigned char *sha1);
765 static inline const unsigned char *lookup_replace_object(const unsigned char *sha1)
766 {
767 if (!read_replace_refs)
768 return sha1;
769 return do_lookup_replace_object(sha1);
770 }
771
772 /* Read and unpack a sha1 file into memory, write memory to a sha1 file */
773 extern int sha1_object_info(const unsigned char *, unsigned long *);
774 extern int hash_sha1_file(const void *buf, unsigned long len, const char *type, unsigned char *sha1);
775 extern int write_sha1_file(const void *buf, unsigned long len, const char *type, unsigned char *return_sha1);
776 extern int pretend_sha1_file(void *, unsigned long, enum object_type, unsigned char *);
777 extern int force_object_loose(const unsigned char *sha1, time_t mtime);
778 extern void *map_sha1_file(const unsigned char *sha1, unsigned long *size);
779 extern int unpack_sha1_header(git_zstream *stream, unsigned char *map, unsigned long mapsize, void *buffer, unsigned long bufsiz);
780 extern int parse_sha1_header(const char *hdr, unsigned long *sizep);
781
782 /* global flag to enable extra checks when accessing packed objects */
783 extern int do_check_packed_object_crc;
784
785 /* for development: log offset of pack access */
786 extern const char *log_pack_access;
787
788 extern int check_sha1_signature(const unsigned char *sha1, void *buf, unsigned long size, const char *type);
789
790 extern int move_temp_to_file(const char *tmpfile, const char *filename);
791
792 extern int has_sha1_pack(const unsigned char *sha1);
793 extern int has_sha1_file(const unsigned char *sha1);
794 extern int has_loose_object_nonlocal(const unsigned char *sha1);
795
796 extern int has_pack_index(const unsigned char *sha1);
797
798 extern void assert_sha1_type(const unsigned char *sha1, enum object_type expect);
799
800 extern const signed char hexval_table[256];
801 static inline unsigned int hexval(unsigned char c)
802 {
803 return hexval_table[c];
804 }
805
806 /* Convert to/from hex/sha1 representation */
807 #define MINIMUM_ABBREV minimum_abbrev
808 #define DEFAULT_ABBREV default_abbrev
809
810 struct object_context {
811 unsigned char tree[20];
812 char path[PATH_MAX];
813 unsigned mode;
814 };
815
816 extern int get_sha1(const char *str, unsigned char *sha1);
817 extern int get_sha1_with_mode_1(const char *str, unsigned char *sha1, unsigned *mode, int only_to_die, const char *prefix);
818 static inline int get_sha1_with_mode(const char *str, unsigned char *sha1, unsigned *mode)
819 {
820 return get_sha1_with_mode_1(str, sha1, mode, 0, NULL);
821 }
822 extern int get_sha1_with_context_1(const char *name, unsigned char *sha1, struct object_context *orc, int only_to_die, const char *prefix);
823 static inline int get_sha1_with_context(const char *str, unsigned char *sha1, struct object_context *orc)
824 {
825 return get_sha1_with_context_1(str, sha1, orc, 0, NULL);
826 }
827
828 /*
829 * Try to read a SHA1 in hexadecimal format from the 40 characters
830 * starting at hex. Write the 20-byte result to sha1 in binary form.
831 * Return 0 on success. Reading stops if a NUL is encountered in the
832 * input, so it is safe to pass this function an arbitrary
833 * null-terminated string.
834 */
835 extern int get_sha1_hex(const char *hex, unsigned char *sha1);
836
837 extern char *sha1_to_hex(const unsigned char *sha1); /* static buffer result! */
838 extern int read_ref_full(const char *refname, unsigned char *sha1,
839 int reading, int *flags);
840 extern int read_ref(const char *refname, unsigned char *sha1);
841
842 /*
843 * Resolve a reference, recursively following symbolic refererences.
844 *
845 * Store the referred-to object's name in sha1 and return the name of
846 * the non-symbolic reference that ultimately pointed at it. The
847 * return value, if not NULL, is a pointer into either a static buffer
848 * or the input ref.
849 *
850 * If the reference cannot be resolved to an object, the behavior
851 * depends on the "reading" argument:
852 *
853 * - If reading is set, return NULL.
854 *
855 * - If reading is not set, clear sha1 and return the name of the last
856 * reference name in the chain, which will either be a non-symbolic
857 * reference or an undefined reference. If this is a prelude to
858 * "writing" to the ref, the return value is the name of the ref
859 * that will actually be created or changed.
860 *
861 * If flag is non-NULL, set the value that it points to the
862 * combination of REF_ISPACKED (if the reference was found among the
863 * packed references) and REF_ISSYMREF (if the initial reference was a
864 * symbolic reference).
865 *
866 * If ref is not a properly-formatted, normalized reference, return
867 * NULL. If more than MAXDEPTH recursive symbolic lookups are needed,
868 * give up and return NULL.
869 *
870 * errno is sometimes set on errors, but not always.
871 */
872 extern const char *resolve_ref_unsafe(const char *ref, unsigned char *sha1, int reading, int *flag);
873 extern char *resolve_refdup(const char *ref, unsigned char *sha1, int reading, int *flag);
874
875 extern int dwim_ref(const char *str, int len, unsigned char *sha1, char **ref);
876 extern int dwim_log(const char *str, int len, unsigned char *sha1, char **ref);
877 extern int interpret_branch_name(const char *str, struct strbuf *);
878 extern int get_sha1_mb(const char *str, unsigned char *sha1);
879
880 extern int refname_match(const char *abbrev_name, const char *full_name, const char **rules);
881 extern const char *ref_rev_parse_rules[];
882 #define ref_fetch_rules ref_rev_parse_rules
883
884 extern int create_symref(const char *ref, const char *refs_heads_master, const char *logmsg);
885 extern int validate_headref(const char *ref);
886
887 extern int base_name_compare(const char *name1, int len1, int mode1, const char *name2, int len2, int mode2);
888 extern int df_name_compare(const char *name1, int len1, int mode1, const char *name2, int len2, int mode2);
889 extern int cache_name_compare(const char *name1, int len1, const char *name2, int len2);
890
891 extern void *read_object_with_reference(const unsigned char *sha1,
892 const char *required_type,
893 unsigned long *size,
894 unsigned char *sha1_ret);
895
896 extern struct object *peel_to_type(const char *name, int namelen,
897 struct object *o, enum object_type);
898
899 enum date_mode {
900 DATE_NORMAL = 0,
901 DATE_RELATIVE,
902 DATE_SHORT,
903 DATE_LOCAL,
904 DATE_ISO8601,
905 DATE_RFC2822,
906 DATE_RAW
907 };
908
909 const char *show_date(unsigned long time, int timezone, enum date_mode mode);
910 const char *show_date_relative(unsigned long time, int tz,
911 const struct timeval *now,
912 char *timebuf,
913 size_t timebuf_size);
914 int parse_date(const char *date, char *buf, int bufsize);
915 int parse_date_basic(const char *date, unsigned long *timestamp, int *offset);
916 void datestamp(char *buf, int bufsize);
917 #define approxidate(s) approxidate_careful((s), NULL)
918 unsigned long approxidate_careful(const char *, int *);
919 unsigned long approxidate_relative(const char *date, const struct timeval *now);
920 enum date_mode parse_date_format(const char *format);
921
922 #define IDENT_WARN_ON_NO_NAME 1
923 #define IDENT_ERROR_ON_NO_NAME 2
924 #define IDENT_NO_DATE 4
925 extern const char *git_author_info(int);
926 extern const char *git_committer_info(int);
927 extern const char *fmt_ident(const char *name, const char *email, const char *date_str, int);
928 extern const char *fmt_name(const char *name, const char *email);
929 extern const char *git_editor(void);
930 extern const char *git_pager(int stdout_is_tty);
931
932 struct checkout {
933 const char *base_dir;
934 int base_dir_len;
935 unsigned force:1,
936 quiet:1,
937 not_new:1,
938 refresh_cache:1;
939 };
940
941 extern int checkout_entry(struct cache_entry *ce, const struct checkout *state, char *topath);
942
943 struct cache_def {
944 char path[PATH_MAX + 1];
945 int len;
946 int flags;
947 int track_flags;
948 int prefix_len_stat_func;
949 };
950
951 extern int has_symlink_leading_path(const char *name, int len);
952 extern int threaded_has_symlink_leading_path(struct cache_def *, const char *, int);
953 extern int check_leading_path(const char *name, int len);
954 extern int threaded_check_leading_path(struct cache_def *cache, const char *name, int len);
955 extern int has_dirs_only_path(const char *name, int len, int prefix_len);
956 extern int threaded_has_dirs_only_path(struct cache_def *cache, const char *name, int len, int prefix_len);
957 extern void schedule_dir_for_removal(const char *name, int len);
958 extern void remove_scheduled_dirs(void);
959
960 extern struct alternate_object_database {
961 struct alternate_object_database *next;
962 char *name;
963 char base[FLEX_ARRAY]; /* more */
964 } *alt_odb_list;
965 extern void prepare_alt_odb(void);
966 extern void add_to_alternates_file(const char *reference);
967 typedef int alt_odb_fn(struct alternate_object_database *, void *);
968 extern void foreach_alt_odb(alt_odb_fn, void*);
969
970 struct pack_window {
971 struct pack_window *next;
972 unsigned char *base;
973 off_t offset;
974 size_t len;
975 unsigned int last_used;
976 unsigned int inuse_cnt;
977 };
978
979 extern struct packed_git {
980 struct packed_git *next;
981 struct pack_window *windows;
982 off_t pack_size;
983 const void *index_data;
984 size_t index_size;
985 uint32_t num_objects;
986 uint32_t num_bad_objects;
987 unsigned char *bad_object_sha1;
988 int index_version;
989 time_t mtime;
990 int pack_fd;
991 unsigned pack_local:1,
992 pack_keep:1,
993 do_not_close:1;
994 unsigned char sha1[20];
995 /* something like ".git/objects/pack/xxxxx.pack" */
996 char pack_name[FLEX_ARRAY]; /* more */
997 } *packed_git;
998
999 struct pack_entry {
1000 off_t offset;
1001 unsigned char sha1[20];
1002 struct packed_git *p;
1003 };
1004
1005 struct ref {
1006 struct ref *next;
1007 unsigned char old_sha1[20];
1008 unsigned char new_sha1[20];
1009 char *symref;
1010 unsigned int force:1,
1011 merge:1,
1012 deletion:1;
1013 enum {
1014 REF_STATUS_NONE = 0,
1015 REF_STATUS_OK,
1016 REF_STATUS_REJECT_NONFASTFORWARD,
1017 REF_STATUS_REJECT_NODELETE,
1018 REF_STATUS_UPTODATE,
1019 REF_STATUS_REMOTE_REJECT,
1020 REF_STATUS_EXPECTING_REPORT
1021 } status;
1022 enum {
1023 NON_FF_HEAD = 1,
1024 NON_FF_OTHER
1025 } nonfastforward;
1026 char *remote_status;
1027 struct ref *peer_ref; /* when renaming */
1028 char name[FLEX_ARRAY]; /* more */
1029 };
1030
1031 #define REF_NORMAL (1u << 0)
1032 #define REF_HEADS (1u << 1)
1033 #define REF_TAGS (1u << 2)
1034
1035 extern struct ref *find_ref_by_name(const struct ref *list, const char *name);
1036
1037 #define CONNECT_VERBOSE (1u << 0)
1038 extern struct child_process *git_connect(int fd[2], const char *url, const char *prog, int flags);
1039 extern int finish_connect(struct child_process *conn);
1040 extern int git_connection_is_socket(struct child_process *conn);
1041 struct extra_have_objects {
1042 int nr, alloc;
1043 unsigned char (*array)[20];
1044 };
1045 extern struct ref **get_remote_heads(int in, struct ref **list, unsigned int flags, struct extra_have_objects *);
1046 extern int server_supports(const char *feature);
1047 extern const char *parse_feature_request(const char *features, const char *feature);
1048
1049 extern struct packed_git *parse_pack_index(unsigned char *sha1, const char *idx_path);
1050
1051 extern void prepare_packed_git(void);
1052 extern void reprepare_packed_git(void);
1053 extern void install_packed_git(struct packed_git *pack);
1054
1055 extern struct packed_git *find_sha1_pack(const unsigned char *sha1,
1056 struct packed_git *packs);
1057
1058 extern void pack_report(void);
1059 extern int open_pack_index(struct packed_git *);
1060 extern void close_pack_index(struct packed_git *);
1061 extern unsigned char *use_pack(struct packed_git *, struct pack_window **, off_t, unsigned long *);
1062 extern void close_pack_windows(struct packed_git *);
1063 extern void unuse_pack(struct pack_window **);
1064 extern void free_pack_by_name(const char *);
1065 extern void clear_delta_base_cache(void);
1066 extern struct packed_git *add_packed_git(const char *, int, int);
1067 extern const unsigned char *nth_packed_object_sha1(struct packed_git *, uint32_t);
1068 extern off_t nth_packed_object_offset(const struct packed_git *, uint32_t);
1069 extern off_t find_pack_entry_one(const unsigned char *, struct packed_git *);
1070 extern int is_pack_valid(struct packed_git *);
1071 extern void *unpack_entry(struct packed_git *, off_t, enum object_type *, unsigned long *);
1072 extern unsigned long unpack_object_header_buffer(const unsigned char *buf, unsigned long len, enum object_type *type, unsigned long *sizep);
1073 extern unsigned long get_size_from_delta(struct packed_git *, struct pack_window **, off_t);
1074 extern int unpack_object_header(struct packed_git *, struct pack_window **, off_t *, unsigned long *);
1075
1076 struct object_info {
1077 /* Request */
1078 unsigned long *sizep;
1079
1080 /* Response */
1081 enum {
1082 OI_CACHED,
1083 OI_LOOSE,
1084 OI_PACKED,
1085 OI_DBCACHED
1086 } whence;
1087 union {
1088 /*
1089 * struct {
1090 * ... Nothing to expose in this case
1091 * } cached;
1092 * struct {
1093 * ... Nothing to expose in this case
1094 * } loose;
1095 */
1096 struct {
1097 struct packed_git *pack;
1098 off_t offset;
1099 unsigned int is_delta;
1100 } packed;
1101 } u;
1102 };
1103 extern int sha1_object_info_extended(const unsigned char *, struct object_info *);
1104
1105 /* Dumb servers support */
1106 extern int update_server_info(int);
1107
1108 /* git_config_parse_key() returns these negated: */
1109 #define CONFIG_INVALID_KEY 1
1110 #define CONFIG_NO_SECTION_OR_NAME 2
1111 /* git_config_set(), git_config_set_multivar() return the above or these: */
1112 #define CONFIG_NO_LOCK -1
1113 #define CONFIG_INVALID_FILE 3
1114 #define CONFIG_NO_WRITE 4
1115 #define CONFIG_NOTHING_SET 5
1116 #define CONFIG_INVALID_PATTERN 6
1117
1118 typedef int (*config_fn_t)(const char *, const char *, void *);
1119 extern int git_default_config(const char *, const char *, void *);
1120 extern int git_config_from_file(config_fn_t fn, const char *, void *);
1121 extern void git_config_push_parameter(const char *text);
1122 extern int git_config_from_parameters(config_fn_t fn, void *data);
1123 extern int git_config(config_fn_t fn, void *);
1124 extern int git_config_with_options(config_fn_t fn, void *,
1125 const char *filename, int respect_includes);
1126 extern int git_config_early(config_fn_t fn, void *, const char *repo_config);
1127 extern int git_parse_ulong(const char *, unsigned long *);
1128 extern int git_config_int(const char *, const char *);
1129 extern unsigned long git_config_ulong(const char *, const char *);
1130 extern int git_config_bool_or_int(const char *, const char *, int *);
1131 extern int git_config_bool(const char *, const char *);
1132 extern int git_config_maybe_bool(const char *, const char *);
1133 extern int git_config_string(const char **, const char *, const char *);
1134 extern int git_config_pathname(const char **, const char *, const char *);
1135 extern int git_config_set_in_file(const char *, const char *, const char *);
1136 extern int git_config_set(const char *, const char *);
1137 extern int git_config_parse_key(const char *, char **, int *);
1138 extern int git_config_set_multivar(const char *, const char *, const char *, int);
1139 extern int git_config_set_multivar_in_file(const char *, const char *, const char *, const char *, int);
1140 extern int git_config_rename_section(const char *, const char *);
1141 extern int git_config_rename_section_in_file(const char *, const char *, const char *);
1142 extern const char *git_etc_gitconfig(void);
1143 extern int check_repository_format_version(const char *var, const char *value, void *cb);
1144 extern int git_env_bool(const char *, int);
1145 extern int git_config_system(void);
1146 extern int config_error_nonbool(const char *);
1147 extern const char *get_log_output_encoding(void);
1148 extern const char *get_commit_output_encoding(void);
1149
1150 extern int git_config_parse_parameter(const char *, config_fn_t fn, void *data);
1151
1152 struct config_include_data {
1153 int depth;
1154 config_fn_t fn;
1155 void *data;
1156 };
1157 #define CONFIG_INCLUDE_INIT { 0 }
1158 extern int git_config_include(const char *name, const char *value, void *data);
1159
1160 #define MAX_GITNAME (1000)
1161 extern char git_default_email[MAX_GITNAME];
1162 extern char git_default_name[MAX_GITNAME];
1163 #define IDENT_NAME_GIVEN 01
1164 #define IDENT_MAIL_GIVEN 02
1165 #define IDENT_ALL_GIVEN (IDENT_NAME_GIVEN|IDENT_MAIL_GIVEN)
1166 extern int user_ident_explicitly_given;
1167 extern int user_ident_sufficiently_given(void);
1168
1169 extern const char *git_commit_encoding;
1170 extern const char *git_log_output_encoding;
1171 extern const char *git_mailmap_file;
1172
1173 /* IO helper functions */
1174 extern void maybe_flush_or_die(FILE *, const char *);
1175 extern int copy_fd(int ifd, int ofd);
1176 extern int copy_file(const char *dst, const char *src, int mode);
1177 extern int copy_file_with_time(const char *dst, const char *src, int mode);
1178 extern void write_or_die(int fd, const void *buf, size_t count);
1179 extern int write_or_whine(int fd, const void *buf, size_t count, const char *msg);
1180 extern int write_or_whine_pipe(int fd, const void *buf, size_t count, const char *msg);
1181 extern void fsync_or_die(int fd, const char *);
1182
1183 extern ssize_t read_in_full(int fd, void *buf, size_t count);
1184 extern ssize_t write_in_full(int fd, const void *buf, size_t count);
1185 static inline ssize_t write_str_in_full(int fd, const char *str)
1186 {
1187 return write_in_full(fd, str, strlen(str));
1188 }
1189
1190 /* pager.c */
1191 extern void setup_pager(void);
1192 extern const char *pager_program;
1193 extern int pager_in_use(void);
1194 extern int pager_use_color;
1195 extern int term_columns(void);
1196 extern int decimal_width(int);
1197
1198 extern const char *editor_program;
1199 extern const char *askpass_program;
1200 extern const char *excludes_file;
1201
1202 /* base85 */
1203 int decode_85(char *dst, const char *line, int linelen);
1204 void encode_85(char *buf, const unsigned char *data, int bytes);
1205
1206 /* alloc.c */
1207 extern void *alloc_blob_node(void);
1208 extern void *alloc_tree_node(void);
1209 extern void *alloc_commit_node(void);
1210 extern void *alloc_tag_node(void);
1211 extern void *alloc_object_node(void);
1212 extern void alloc_report(void);
1213
1214 /* trace.c */
1215 __attribute__((format (printf, 1, 2)))
1216 extern void trace_printf(const char *format, ...);
1217 extern void trace_vprintf(const char *key, const char *format, va_list ap);
1218 __attribute__((format (printf, 2, 3)))
1219 extern void trace_argv_printf(const char **argv, const char *format, ...);
1220 extern void trace_repo_setup(const char *prefix);
1221 extern int trace_want(const char *key);
1222 extern void trace_strbuf(const char *key, const struct strbuf *buf);
1223
1224 void packet_trace_identity(const char *prog);
1225
1226 /* add */
1227 /*
1228 * return 0 if success, 1 - if addition of a file failed and
1229 * ADD_FILES_IGNORE_ERRORS was specified in flags
1230 */
1231 int add_files_to_cache(const char *prefix, const char **pathspec, int flags);
1232
1233 /* diff.c */
1234 extern int diff_auto_refresh_index;
1235
1236 /* match-trees.c */
1237 void shift_tree(const unsigned char *, const unsigned char *, unsigned char *, int);
1238 void shift_tree_by(const unsigned char *, const unsigned char *, unsigned char *, const char *);
1239
1240 /*
1241 * whitespace rules.
1242 * used by both diff and apply
1243 * last two digits are tab width
1244 */
1245 #define WS_BLANK_AT_EOL 0100
1246 #define WS_SPACE_BEFORE_TAB 0200
1247 #define WS_INDENT_WITH_NON_TAB 0400
1248 #define WS_CR_AT_EOL 01000
1249 #define WS_BLANK_AT_EOF 02000
1250 #define WS_TAB_IN_INDENT 04000
1251 #define WS_TRAILING_SPACE (WS_BLANK_AT_EOL|WS_BLANK_AT_EOF)
1252 #define WS_DEFAULT_RULE (WS_TRAILING_SPACE|WS_SPACE_BEFORE_TAB|8)
1253 #define WS_TAB_WIDTH_MASK 077
1254 extern unsigned whitespace_rule_cfg;
1255 extern unsigned whitespace_rule(const char *);
1256 extern unsigned parse_whitespace_rule(const char *);
1257 extern unsigned ws_check(const char *line, int len, unsigned ws_rule);
1258 extern void ws_check_emit(const char *line, int len, unsigned ws_rule, FILE *stream, const char *set, const char *reset, const char *ws);
1259 extern char *whitespace_error_string(unsigned ws);
1260 extern void ws_fix_copy(struct strbuf *, const char *, int, unsigned, int *);
1261 extern int ws_blank_line(const char *line, int len, unsigned ws_rule);
1262 #define ws_tab_width(rule) ((rule) & WS_TAB_WIDTH_MASK)
1263
1264 /* ls-files */
1265 int report_path_error(const char *ps_matched, const char **pathspec, const char *prefix);
1266 void overlay_tree_on_cache(const char *tree_name, const char *prefix);
1267
1268 char *alias_lookup(const char *alias);
1269 int split_cmdline(char *cmdline, const char ***argv);
1270 /* Takes a negative value returned by split_cmdline */
1271 const char *split_cmdline_strerror(int cmdline_errno);
1272
1273 /* git.c */
1274 struct startup_info {
1275 int have_repository;
1276 const char *prefix;
1277 };
1278 extern struct startup_info *startup_info;
1279
1280 /* builtin/merge.c */
1281 int checkout_fast_forward(const unsigned char *from, const unsigned char *to);
1282
1283 #endif /* CACHE_H */