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