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Commit | Line | Data |
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e83c5163 LT |
1 | #ifndef CACHE_H |
2 | #define CACHE_H | |
3 | ||
4050c0df | 4 | #include "git-compat-util.h" |
5ecd293d | 5 | #include "strbuf.h" |
cf558704 | 6 | #include "hash.h" |
e83c5163 | 7 | |
cef661fc | 8 | #include SHA1_HEADER |
e83c5163 LT |
9 | #include <zlib.h> |
10 | ||
609a2289 | 11 | #if defined(NO_DEFLATE_BOUND) || ZLIB_VERNUM < 0x1200 |
9da3acfb ET |
12 | #define deflateBound(c,s) ((s) + (((s) + 7) >> 3) + (((s) + 63) >> 6) + 11) |
13 | #endif | |
14 | ||
962554c6 | 15 | #if defined(DT_UNKNOWN) && !defined(NO_D_TYPE_IN_DIRENT) |
b6829693 ET |
16 | #define DTYPE(de) ((de)->d_type) |
17 | #else | |
0bdd79af JH |
18 | #undef DT_UNKNOWN |
19 | #undef DT_DIR | |
20 | #undef DT_REG | |
21 | #undef DT_LNK | |
b6829693 ET |
22 | #define DT_UNKNOWN 0 |
23 | #define DT_DIR 1 | |
24 | #define DT_REG 2 | |
a15c1c60 | 25 | #define DT_LNK 3 |
b6829693 ET |
26 | #define DTYPE(de) DT_UNKNOWN |
27 | #endif | |
28 | ||
40689ae1 MK |
29 | /* unknown mode (impossible combination S_IFIFO|S_IFCHR) */ |
30 | #define S_IFINVALID 0030000 | |
31 | ||
9eec4795 LT |
32 | /* |
33 | * A "directory link" is a link to another git directory. | |
34 | * | |
35 | * The value 0160000 is not normally a valid mode, and | |
36 | * also just happens to be S_IFDIR + S_IFLNK | |
37 | * | |
38 | * NOTE! We *really* shouldn't depend on the S_IFxxx macros | |
39 | * always having the same values everywhere. We should use | |
40 | * our internal git values for these things, and then we can | |
41 | * translate that to the OS-specific value. It just so | |
42 | * happens that everybody shares the same bit representation | |
43 | * in the UNIX world (and apparently wider too..) | |
44 | */ | |
302b9282 MW |
45 | #define S_IFGITLINK 0160000 |
46 | #define S_ISGITLINK(m) (((m) & S_IFMT) == S_IFGITLINK) | |
9eec4795 | 47 | |
2386d658 LT |
48 | /* |
49 | * Intensive research over the course of many years has shown that | |
50 | * port 9418 is totally unused by anything else. Or | |
51 | * | |
52 | * Your search - "port 9418" - did not match any documents. | |
53 | * | |
54 | * as www.google.com puts it. | |
ba8a4970 LT |
55 | * |
56 | * This port has been properly assigned for git use by IANA: | |
57 | * git (Assigned-9418) [I06-050728-0001]. | |
58 | * | |
59 | * git 9418/tcp git pack transfer service | |
60 | * git 9418/udp git pack transfer service | |
61 | * | |
62 | * with Linus Torvalds <torvalds@osdl.org> as the point of | |
63 | * contact. September 2005. | |
64 | * | |
65 | * See http://www.iana.org/assignments/port-numbers | |
2386d658 LT |
66 | */ |
67 | #define DEFAULT_GIT_PORT 9418 | |
68 | ||
e83c5163 LT |
69 | /* |
70 | * Basic data structures for the directory cache | |
e83c5163 LT |
71 | */ |
72 | ||
73 | #define CACHE_SIGNATURE 0x44495243 /* "DIRC" */ | |
74 | struct cache_header { | |
ccc4feb5 LT |
75 | unsigned int hdr_signature; |
76 | unsigned int hdr_version; | |
77 | unsigned int hdr_entries; | |
e83c5163 LT |
78 | }; |
79 | ||
80 | /* | |
81 | * The "cache_time" is just the low 32 bits of the | |
82 | * time. It doesn't matter if it overflows - we only | |
83 | * check it for equality in the 32 bits we save. | |
84 | */ | |
85 | struct cache_time { | |
86 | unsigned int sec; | |
87 | unsigned int nsec; | |
88 | }; | |
89 | ||
90 | /* | |
91 | * dev/ino/uid/gid/size are also just tracked to the low 32 bits | |
92 | * Again - this is just a (very strong in practice) heuristic that | |
93 | * the inode hasn't changed. | |
ccc4feb5 LT |
94 | * |
95 | * We save the fields in big-endian order to allow using the | |
96 | * index file over NFS transparently. | |
e83c5163 | 97 | */ |
7a51ed66 LT |
98 | struct ondisk_cache_entry { |
99 | struct cache_time ctime; | |
100 | struct cache_time mtime; | |
101 | unsigned int dev; | |
102 | unsigned int ino; | |
103 | unsigned int mode; | |
104 | unsigned int uid; | |
105 | unsigned int gid; | |
106 | unsigned int size; | |
107 | unsigned char sha1[20]; | |
108 | unsigned short flags; | |
109 | char name[FLEX_ARRAY]; /* more */ | |
110 | }; | |
111 | ||
e83c5163 | 112 | struct cache_entry { |
7a51ed66 LT |
113 | unsigned int ce_ctime; |
114 | unsigned int ce_mtime; | |
ccc4feb5 LT |
115 | unsigned int ce_dev; |
116 | unsigned int ce_ino; | |
117 | unsigned int ce_mode; | |
118 | unsigned int ce_uid; | |
119 | unsigned int ce_gid; | |
120 | unsigned int ce_size; | |
7a51ed66 | 121 | unsigned int ce_flags; |
e83c5163 | 122 | unsigned char sha1[20]; |
eb7a2f1d | 123 | struct cache_entry *next; |
8f1d2e6f | 124 | char name[FLEX_ARRAY]; /* more */ |
e83c5163 LT |
125 | }; |
126 | ||
95fd5bf8 LT |
127 | #define CE_NAMEMASK (0x0fff) |
128 | #define CE_STAGEMASK (0x3000) | |
5f73076c | 129 | #define CE_VALID (0x8000) |
aee46198 | 130 | #define CE_STAGESHIFT 12 |
95fd5bf8 | 131 | |
7a51ed66 LT |
132 | /* In-memory only */ |
133 | #define CE_UPDATE (0x10000) | |
134 | #define CE_REMOVE (0x20000) | |
eadb5831 | 135 | #define CE_UPTODATE (0x40000) |
a22c6371 LT |
136 | |
137 | #define CE_HASHED (0x100000) | |
138 | #define CE_UNHASHED (0x200000) | |
7a51ed66 | 139 | |
eb7a2f1d LT |
140 | /* |
141 | * Copy the sha1 and stat state of a cache entry from one to | |
142 | * another. But we never change the name, or the hash state! | |
143 | */ | |
144 | #define CE_STATE_MASK (CE_HASHED | CE_UNHASHED) | |
145 | static inline void copy_cache_entry(struct cache_entry *dst, struct cache_entry *src) | |
146 | { | |
147 | unsigned int state = dst->ce_flags & CE_STATE_MASK; | |
148 | ||
149 | /* Don't copy hash chain and name */ | |
150 | memcpy(dst, src, offsetof(struct cache_entry, next)); | |
151 | ||
152 | /* Restore the hash state */ | |
153 | dst->ce_flags = (dst->ce_flags & ~CE_STATE_MASK) | state; | |
154 | } | |
155 | ||
7fec10b7 JH |
156 | static inline unsigned create_ce_flags(size_t len, unsigned stage) |
157 | { | |
158 | if (len >= CE_NAMEMASK) | |
159 | len = CE_NAMEMASK; | |
160 | return (len | (stage << CE_STAGESHIFT)); | |
161 | } | |
162 | ||
163 | static inline size_t ce_namelen(const struct cache_entry *ce) | |
164 | { | |
165 | size_t len = ce->ce_flags & CE_NAMEMASK; | |
166 | if (len < CE_NAMEMASK) | |
167 | return len; | |
168 | return strlen(ce->name + CE_NAMEMASK) + CE_NAMEMASK; | |
169 | } | |
170 | ||
aee46198 | 171 | #define ce_size(ce) cache_entry_size(ce_namelen(ce)) |
7a51ed66 LT |
172 | #define ondisk_ce_size(ce) ondisk_cache_entry_size(ce_namelen(ce)) |
173 | #define ce_stage(ce) ((CE_STAGEMASK & (ce)->ce_flags) >> CE_STAGESHIFT) | |
eadb5831 JH |
174 | #define ce_uptodate(ce) ((ce)->ce_flags & CE_UPTODATE) |
175 | #define ce_mark_uptodate(ce) ((ce)->ce_flags |= CE_UPTODATE) | |
aee46198 | 176 | |
e4479470 | 177 | #define ce_permissions(mode) (((mode) & 0100) ? 0755 : 0644) |
8ae0a8c5 KS |
178 | static inline unsigned int create_ce_mode(unsigned int mode) |
179 | { | |
8ae0a8c5 | 180 | if (S_ISLNK(mode)) |
7a51ed66 | 181 | return S_IFLNK; |
302b9282 | 182 | if (S_ISDIR(mode) || S_ISGITLINK(mode)) |
7a51ed66 LT |
183 | return S_IFGITLINK; |
184 | return S_IFREG | ce_permissions(mode); | |
8ae0a8c5 | 185 | } |
185c975f JH |
186 | static inline unsigned int ce_mode_from_stat(struct cache_entry *ce, unsigned int mode) |
187 | { | |
78a8d641 JS |
188 | extern int trust_executable_bit, has_symlinks; |
189 | if (!has_symlinks && S_ISREG(mode) && | |
7a51ed66 | 190 | ce && S_ISLNK(ce->ce_mode)) |
78a8d641 | 191 | return ce->ce_mode; |
185c975f | 192 | if (!trust_executable_bit && S_ISREG(mode)) { |
7a51ed66 | 193 | if (ce && S_ISREG(ce->ce_mode)) |
185c975f JH |
194 | return ce->ce_mode; |
195 | return create_ce_mode(0666); | |
196 | } | |
197 | return create_ce_mode(mode); | |
198 | } | |
d6b8fc30 JH |
199 | static inline int ce_to_dtype(const struct cache_entry *ce) |
200 | { | |
201 | unsigned ce_mode = ntohl(ce->ce_mode); | |
202 | if (S_ISREG(ce_mode)) | |
203 | return DT_REG; | |
204 | else if (S_ISDIR(ce_mode) || S_ISGITLINK(ce_mode)) | |
205 | return DT_DIR; | |
206 | else if (S_ISLNK(ce_mode)) | |
207 | return DT_LNK; | |
208 | else | |
209 | return DT_UNKNOWN; | |
210 | } | |
1b0c7174 JH |
211 | #define canon_mode(mode) \ |
212 | (S_ISREG(mode) ? (S_IFREG | ce_permissions(mode)) : \ | |
302b9282 | 213 | S_ISLNK(mode) ? S_IFLNK : S_ISDIR(mode) ? S_IFDIR : S_IFGITLINK) |
e4479470 | 214 | |
aee46198 | 215 | #define cache_entry_size(len) ((offsetof(struct cache_entry,name) + (len) + 8) & ~7) |
7a51ed66 | 216 | #define ondisk_cache_entry_size(len) ((offsetof(struct ondisk_cache_entry,name) + (len) + 8) & ~7) |
f5cabd13 | 217 | |
228e94f9 JH |
218 | struct index_state { |
219 | struct cache_entry **cache; | |
220 | unsigned int cache_nr, cache_alloc, cache_changed; | |
221 | struct cache_tree *cache_tree; | |
222 | time_t timestamp; | |
7a51ed66 | 223 | void *alloc; |
9cb76b8c | 224 | unsigned name_hash_initialized : 1; |
cf558704 | 225 | struct hash_table name_hash; |
228e94f9 JH |
226 | }; |
227 | ||
228 | extern struct index_state the_index; | |
229 | ||
96872bc2 LT |
230 | /* Name hashing */ |
231 | extern void add_name_hash(struct index_state *istate, struct cache_entry *ce); | |
232 | /* | |
233 | * We don't actually *remove* it, we can just mark it invalid so that | |
234 | * we won't find it in lookups. | |
235 | * | |
236 | * Not only would we have to search the lists (simple enough), but | |
237 | * we'd also have to rehash other hash buckets in case this makes the | |
238 | * hash bucket empty (common). So it's much better to just mark | |
239 | * it. | |
240 | */ | |
241 | static inline void remove_name_hash(struct cache_entry *ce) | |
242 | { | |
243 | ce->ce_flags |= CE_UNHASHED; | |
244 | } | |
245 | ||
246 | ||
4aab5b46 | 247 | #ifndef NO_THE_INDEX_COMPATIBILITY_MACROS |
228e94f9 JH |
248 | #define active_cache (the_index.cache) |
249 | #define active_nr (the_index.cache_nr) | |
250 | #define active_alloc (the_index.cache_alloc) | |
251 | #define active_cache_changed (the_index.cache_changed) | |
252 | #define active_cache_tree (the_index.cache_tree) | |
e83c5163 | 253 | |
4aab5b46 JH |
254 | #define read_cache() read_index(&the_index) |
255 | #define read_cache_from(path) read_index_from(&the_index, (path)) | |
256 | #define write_cache(newfd, cache, entries) write_index(&the_index, (newfd)) | |
257 | #define discard_cache() discard_index(&the_index) | |
94a5728c | 258 | #define unmerged_cache() unmerged_index(&the_index) |
4aab5b46 JH |
259 | #define cache_name_pos(name, namelen) index_name_pos(&the_index,(name),(namelen)) |
260 | #define add_cache_entry(ce, option) add_index_entry(&the_index, (ce), (option)) | |
261 | #define remove_cache_entry_at(pos) remove_index_entry_at(&the_index, (pos)) | |
262 | #define remove_file_from_cache(path) remove_file_from_index(&the_index, (path)) | |
263 | #define add_file_to_cache(path, verbose) add_file_to_index(&the_index, (path), (verbose)) | |
d616813d | 264 | #define refresh_cache(flags) refresh_index(&the_index, (flags), NULL, NULL) |
4bd5b7da JH |
265 | #define ce_match_stat(ce, st, options) ie_match_stat(&the_index, (ce), (st), (options)) |
266 | #define ce_modified(ce, st, options) ie_modified(&the_index, (ce), (st), (options)) | |
cf558704 | 267 | #define cache_name_exists(name, namelen) index_name_exists(&the_index, (name), (namelen)) |
4aab5b46 | 268 | #endif |
e83c5163 | 269 | |
edaec3fb JH |
270 | enum object_type { |
271 | OBJ_BAD = -1, | |
272 | OBJ_NONE = 0, | |
273 | OBJ_COMMIT = 1, | |
274 | OBJ_TREE = 2, | |
275 | OBJ_BLOB = 3, | |
276 | OBJ_TAG = 4, | |
277 | /* 5 for future expansion */ | |
278 | OBJ_OFS_DELTA = 6, | |
279 | OBJ_REF_DELTA = 7, | |
355885d5 | 280 | OBJ_ANY, |
edaec3fb JH |
281 | OBJ_MAX, |
282 | }; | |
283 | ||
b45563a2 JH |
284 | static inline enum object_type object_type(unsigned int mode) |
285 | { | |
286 | return S_ISDIR(mode) ? OBJ_TREE : | |
287 | S_ISGITLINK(mode) ? OBJ_COMMIT : | |
288 | OBJ_BLOB; | |
289 | } | |
290 | ||
8ac069ac | 291 | #define GIT_DIR_ENVIRONMENT "GIT_DIR" |
892c41b9 | 292 | #define GIT_WORK_TREE_ENVIRONMENT "GIT_WORK_TREE" |
8ac069ac | 293 | #define DEFAULT_GIT_DIR_ENVIRONMENT ".git" |
d19938ab | 294 | #define DB_ENVIRONMENT "GIT_OBJECT_DIRECTORY" |
bb233d69 | 295 | #define INDEX_ENVIRONMENT "GIT_INDEX_FILE" |
5da5c8f4 | 296 | #define GRAFT_ENVIRONMENT "GIT_GRAFT_FILE" |
d4ebc36c JH |
297 | #define TEMPLATE_DIR_ENVIRONMENT "GIT_TEMPLATE_DIR" |
298 | #define CONFIG_ENVIRONMENT "GIT_CONFIG" | |
299 | #define CONFIG_LOCAL_ENVIRONMENT "GIT_CONFIG_LOCAL" | |
300 | #define EXEC_PATH_ENVIRONMENT "GIT_EXEC_PATH" | |
d0bfd026 JH |
301 | #define GITATTRIBUTES_FILE ".gitattributes" |
302 | #define INFOATTRIBUTES_FILE "info/attributes" | |
f48fd688 | 303 | #define ATTRIBUTE_MACRO_PREFIX "[attr]" |
bb233d69 | 304 | |
7d1864ce JH |
305 | extern int is_bare_repository_cfg; |
306 | extern int is_bare_repository(void); | |
68025633 | 307 | extern int is_inside_git_dir(void); |
e90fdc39 | 308 | extern char *git_work_tree_cfg; |
892c41b9 | 309 | extern int is_inside_work_tree(void); |
c5fba16c | 310 | extern const char *get_git_dir(void); |
8ac069ac | 311 | extern char *get_object_directory(void); |
95fc7512 | 312 | extern char *get_refs_directory(void); |
8ac069ac | 313 | extern char *get_index_file(void); |
5da5c8f4 | 314 | extern char *get_graft_file(void); |
d7ac12b2 | 315 | extern int set_git_dir(const char *path); |
e90fdc39 | 316 | extern const char *get_git_work_tree(void); |
8ac069ac JH |
317 | |
318 | #define ALTERNATE_DB_ENVIRONMENT "GIT_ALTERNATE_OBJECT_DIRECTORIES" | |
bb233d69 | 319 | |
6b5ee137 | 320 | extern const char **get_pathspec(const char *prefix, const char **pathspec); |
59f0f2f3 | 321 | extern void setup_work_tree(void); |
4ca06608 | 322 | extern const char *setup_git_directory_gently(int *); |
d288a700 | 323 | extern const char *setup_git_directory(void); |
6b5ee137 | 324 | extern const char *prefix_path(const char *prefix, int len, const char *path); |
4ca06608 | 325 | extern const char *prefix_filename(const char *prefix, int len, const char *path); |
e23d0b4a | 326 | extern void verify_filename(const char *prefix, const char *name); |
ea92f41f | 327 | extern void verify_non_filename(const char *prefix, const char *name); |
d288a700 | 328 | |
e83c5163 LT |
329 | #define alloc_nr(x) (((x)+16)*3/2) |
330 | ||
6815e569 JK |
331 | /* |
332 | * Realloc the buffer pointed at by variable 'x' so that it can hold | |
333 | * at least 'nr' entries; the number of entries currently allocated | |
334 | * is 'alloc', using the standard growing factor alloc_nr() macro. | |
335 | * | |
336 | * DO NOT USE any expression with side-effect for 'x' or 'alloc'. | |
337 | */ | |
338 | #define ALLOC_GROW(x, nr, alloc) \ | |
339 | do { \ | |
c927e6c6 | 340 | if ((nr) > alloc) { \ |
4234a761 JH |
341 | if (alloc_nr(alloc) < (nr)) \ |
342 | alloc = (nr); \ | |
343 | else \ | |
344 | alloc = alloc_nr(alloc); \ | |
6815e569 JK |
345 | x = xrealloc((x), alloc * sizeof(*(x))); \ |
346 | } \ | |
347 | } while(0) | |
348 | ||
734aab75 | 349 | /* Initialize and use the cache information */ |
4aab5b46 JH |
350 | extern int read_index(struct index_state *); |
351 | extern int read_index_from(struct index_state *, const char *path); | |
d1f128b0 | 352 | extern int write_index(const struct index_state *, int newfd); |
4aab5b46 | 353 | extern int discard_index(struct index_state *); |
d1f128b0 | 354 | extern int unmerged_index(const struct index_state *); |
8dcf39c4 | 355 | extern int verify_path(const char *path); |
df292c79 | 356 | extern struct cache_entry *index_name_exists(struct index_state *istate, const char *name, int namelen); |
d1f128b0 | 357 | extern int index_name_pos(const struct index_state *, const char *name, int namelen); |
192268c1 JH |
358 | #define ADD_CACHE_OK_TO_ADD 1 /* Ok to add */ |
359 | #define ADD_CACHE_OK_TO_REPLACE 2 /* Ok to replace file/directory */ | |
b155725d | 360 | #define ADD_CACHE_SKIP_DFCHECK 4 /* Ok to skip DF conflict checks */ |
af3785dc | 361 | #define ADD_CACHE_JUST_APPEND 8 /* Append only; tree.c::read_tree() */ |
4aab5b46 | 362 | extern int add_index_entry(struct index_state *, struct cache_entry *ce, int option); |
8fd2cb40 | 363 | extern struct cache_entry *refresh_cache_entry(struct cache_entry *ce, int really); |
4aab5b46 JH |
364 | extern int remove_index_entry_at(struct index_state *, int pos); |
365 | extern int remove_file_from_index(struct index_state *, const char *path); | |
366 | extern int add_file_to_index(struct index_state *, const char *path, int verbose); | |
6640f881 | 367 | extern struct cache_entry *make_cache_entry(unsigned int mode, const unsigned char *sha1, const char *path, int stage, int refresh); |
dbbce55b | 368 | extern int ce_same_name(struct cache_entry *a, struct cache_entry *b); |
4bd5b7da JH |
369 | |
370 | /* do stat comparison even if CE_VALID is true */ | |
371 | #define CE_MATCH_IGNORE_VALID 01 | |
372 | /* do not check the contents but report dirty on racily-clean entries */ | |
373 | #define CE_MATCH_RACY_IS_DIRTY 02 | |
d1f128b0 LT |
374 | extern int ie_match_stat(const struct index_state *, struct cache_entry *, struct stat *, unsigned int); |
375 | extern int ie_modified(const struct index_state *, struct cache_entry *, struct stat *, unsigned int); | |
4bd5b7da | 376 | |
c0fd1f51 | 377 | extern int ce_path_match(const struct cache_entry *ce, const char **pathspec); |
53bca91a | 378 | extern int index_fd(unsigned char *sha1, int fd, struct stat *st, int write_object, enum object_type type, const char *path); |
024510c8 | 379 | extern int index_pipe(unsigned char *sha1, int fd, const char *type, int write_object); |
ec1fcc16 | 380 | extern int index_path(unsigned char *sha1, const char *path, struct stat *st, int write_object); |
415e96c8 JH |
381 | extern void fill_stat_cache_info(struct cache_entry *ce, struct stat *st); |
382 | ||
405e5b2f LT |
383 | #define REFRESH_REALLY 0x0001 /* ignore_valid */ |
384 | #define REFRESH_UNMERGED 0x0002 /* allow unmerged */ | |
385 | #define REFRESH_QUIET 0x0004 /* be quiet about it */ | |
386 | #define REFRESH_IGNORE_MISSING 0x0008 /* ignore non-existent */ | |
d616813d | 387 | extern int refresh_index(struct index_state *, unsigned int flags, const char **pathspec, char *seen); |
405e5b2f | 388 | |
021b6e45 JH |
389 | struct lock_file { |
390 | struct lock_file *next; | |
4723ee99 | 391 | int fd; |
5e635e39 | 392 | pid_t owner; |
1084b845 | 393 | char on_list; |
021b6e45 | 394 | char filename[PATH_MAX]; |
415e96c8 | 395 | }; |
40aaae88 | 396 | extern int hold_lock_file_for_update(struct lock_file *, const char *path, int); |
021b6e45 | 397 | extern int commit_lock_file(struct lock_file *); |
30ca07a2 JH |
398 | |
399 | extern int hold_locked_index(struct lock_file *, int); | |
400 | extern int commit_locked_index(struct lock_file *); | |
5e7f56ac | 401 | extern void set_alternate_index_output(const char *); |
d6cf61bf | 402 | extern int close_lock_file(struct lock_file *); |
021b6e45 | 403 | extern void rollback_lock_file(struct lock_file *); |
1401f46b | 404 | extern int delete_ref(const char *, const unsigned char *sha1); |
734aab75 | 405 | |
2ae1c53b | 406 | /* Environment bits from configuration mechanism */ |
17712991 | 407 | extern int trust_executable_bit; |
9378c161 | 408 | extern int quote_path_fully; |
78a8d641 | 409 | extern int has_symlinks; |
5f73076c | 410 | extern int assume_unchanged; |
9f0bb90d | 411 | extern int prefer_symlink_refs; |
6de08ae6 | 412 | extern int log_all_ref_updates; |
2f8acdb3 | 413 | extern int warn_ambiguous_refs; |
457f06d6 | 414 | extern int shared_repository; |
2ae1c53b | 415 | extern const char *apply_default_whitespace; |
12f6c308 | 416 | extern int zlib_compression_level; |
960ccca6 DH |
417 | extern int core_compression_level; |
418 | extern int core_compression_seen; | |
60bb8b14 | 419 | extern size_t packed_git_window_size; |
77ccc5bb | 420 | extern size_t packed_git_limit; |
18bdec11 | 421 | extern size_t delta_base_cache_limit; |
6c510bee | 422 | extern int auto_crlf; |
17712991 | 423 | |
21e5ad50 SP |
424 | enum safe_crlf { |
425 | SAFE_CRLF_FALSE = 0, | |
426 | SAFE_CRLF_FAIL = 1, | |
427 | SAFE_CRLF_WARN = 2, | |
428 | }; | |
429 | ||
430 | extern enum safe_crlf safe_crlf; | |
431 | ||
9ed36cfa JS |
432 | enum branch_track { |
433 | BRANCH_TRACK_NEVER = 0, | |
434 | BRANCH_TRACK_REMOTE, | |
435 | BRANCH_TRACK_ALWAYS, | |
436 | BRANCH_TRACK_EXPLICIT, | |
437 | }; | |
438 | ||
439 | extern enum branch_track git_branch_track; | |
440 | ||
ab9cb76f JH |
441 | #define GIT_REPO_VERSION 0 |
442 | extern int repository_format_version; | |
443 | extern int check_repository_format(void); | |
444 | ||
734aab75 LT |
445 | #define MTIME_CHANGED 0x0001 |
446 | #define CTIME_CHANGED 0x0002 | |
447 | #define OWNER_CHANGED 0x0004 | |
448 | #define MODE_CHANGED 0x0008 | |
449 | #define INODE_CHANGED 0x0010 | |
450 | #define DATA_CHANGED 0x0020 | |
8ae0a8c5 | 451 | #define TYPE_CHANGED 0x0040 |
e83c5163 LT |
452 | |
453 | /* Return a statically allocated filename matching the sha1 signature */ | |
4ec99bf0 TS |
454 | extern char *mkpath(const char *fmt, ...) __attribute__((format (printf, 1, 2))); |
455 | extern char *git_path(const char *fmt, ...) __attribute__((format (printf, 1, 2))); | |
73134b6d | 456 | extern char *sha1_file_name(const unsigned char *sha1); |
bf592c50 DB |
457 | extern char *sha1_pack_name(const unsigned char *sha1); |
458 | extern char *sha1_pack_index_name(const unsigned char *sha1); | |
013f276e | 459 | extern const char *find_unique_abbrev(const unsigned char *sha1, int); |
88cd621d | 460 | extern const unsigned char null_sha1[20]; |
0bef57ee DR |
461 | static inline int is_null_sha1(const unsigned char *sha1) |
462 | { | |
463 | return !memcmp(sha1, null_sha1, 20); | |
464 | } | |
a89fccd2 DR |
465 | static inline int hashcmp(const unsigned char *sha1, const unsigned char *sha2) |
466 | { | |
467 | return memcmp(sha1, sha2, 20); | |
468 | } | |
e702496e SP |
469 | static inline void hashcpy(unsigned char *sha_dst, const unsigned char *sha_src) |
470 | { | |
471 | memcpy(sha_dst, sha_src, 20); | |
472 | } | |
a8e0d16d JH |
473 | static inline void hashclr(unsigned char *hash) |
474 | { | |
475 | memset(hash, 0, 20); | |
476 | } | |
e83c5163 | 477 | |
f2db68ed HE |
478 | int git_mkstemp(char *path, size_t n, const char *template); |
479 | ||
94df2506 JH |
480 | enum sharedrepo { |
481 | PERM_UMASK = 0, | |
482 | PERM_GROUP, | |
483 | PERM_EVERYBODY | |
484 | }; | |
485 | int git_config_perm(const char *var, const char *value); | |
457f06d6 | 486 | int adjust_shared_perm(const char *path); |
b2cb9425 | 487 | int safe_create_leading_directories(char *path); |
bd22c904 | 488 | char *enter_repo(char *path, int strict); |
e5392c51 JS |
489 | static inline int is_absolute_path(const char *path) |
490 | { | |
491 | return path[0] == '/'; | |
492 | } | |
493 | const char *make_absolute_path(const char *path); | |
b2cb9425 | 494 | |
e83c5163 | 495 | /* Read and unpack a sha1 file into memory, write memory to a sha1 file */ |
21666f1a | 496 | extern int sha1_object_info(const unsigned char *, unsigned long *); |
21666f1a | 497 | extern void * read_sha1_file(const unsigned char *sha1, enum object_type *type, unsigned long *size); |
ce9fbf16 | 498 | extern int hash_sha1_file(const void *buf, unsigned long len, const char *type, unsigned char *sha1); |
bf0f910d | 499 | extern int write_sha1_file(void *buf, unsigned long len, const char *type, unsigned char *return_sha1); |
21666f1a | 500 | extern int pretend_sha1_file(void *, unsigned long, enum object_type, unsigned char *); |
8237b185 | 501 | |
5d6ccf5c | 502 | extern int check_sha1_signature(const unsigned char *sha1, void *buf, unsigned long size, const char *type); |
e83c5163 | 503 | |
70b9829e DB |
504 | extern int write_sha1_from_fd(const unsigned char *sha1, int fd, char *buffer, |
505 | size_t bufsize, size_t *bufposn); | |
a5eda52b | 506 | extern int write_sha1_to_fd(int fd, const unsigned char *sha1); |
839837b9 | 507 | extern int move_temp_to_file(const char *tmpfile, const char *filename); |
8237b185 | 508 | |
106d710b | 509 | extern int has_sha1_pack(const unsigned char *sha1, const char **ignore); |
8237b185 DB |
510 | extern int has_sha1_file(const unsigned char *sha1); |
511 | ||
bf592c50 DB |
512 | extern int has_pack_file(const unsigned char *sha1); |
513 | extern int has_pack_index(const unsigned char *sha1); | |
514 | ||
192a6be2 LT |
515 | extern const signed char hexval_table[256]; |
516 | static inline unsigned int hexval(unsigned char c) | |
e49521b5 JH |
517 | { |
518 | return hexval_table[c]; | |
519 | } | |
520 | ||
e83c5163 | 521 | /* Convert to/from hex/sha1 representation */ |
46a6c262 JH |
522 | #define MINIMUM_ABBREV 4 |
523 | #define DEFAULT_ABBREV 7 | |
524 | ||
3c249c95 | 525 | extern int get_sha1(const char *str, unsigned char *sha1); |
a0cd87a5 | 526 | extern int get_sha1_with_mode(const char *str, unsigned char *sha1, unsigned *mode); |
197ee8c9 LT |
527 | extern int get_sha1_hex(const char *hex, unsigned char *sha1); |
528 | extern char *sha1_to_hex(const unsigned char *sha1); /* static buffer result! */ | |
ca8db142 | 529 | extern int read_ref(const char *filename, unsigned char *sha1); |
8da19775 | 530 | extern const char *resolve_ref(const char *path, unsigned char *sha1, int, int *); |
e86eb666 | 531 | extern int dwim_ref(const char *str, int len, unsigned char *sha1, char **ref); |
eb3a4822 | 532 | extern int dwim_log(const char *str, int len, unsigned char *sha1, char **ref); |
e86eb666 | 533 | |
79803322 SP |
534 | extern int refname_match(const char *abbrev_name, const char *full_name, const char **rules); |
535 | extern const char *ref_rev_parse_rules[]; | |
605b4978 | 536 | extern const char *ref_fetch_rules[]; |
79803322 | 537 | |
8b5157e4 | 538 | extern int create_symref(const char *ref, const char *refs_heads_master, const char *logmsg); |
c847f537 | 539 | extern int validate_headref(const char *ref); |
e83c5163 | 540 | |
958ba6c9 | 541 | extern int base_name_compare(const char *name1, int len1, int mode1, const char *name2, int len2, int mode2); |
0ab9e1e8 | 542 | extern int df_name_compare(const char *name1, int len1, int mode1, const char *name2, int len2, int mode2); |
79517a06 | 543 | extern int cache_name_compare(const char *name1, int len1, const char *name2, int len2); |
e83c5163 | 544 | |
40469ee9 | 545 | extern void *read_object_with_reference(const unsigned char *sha1, |
bf0f910d | 546 | const char *required_type, |
40469ee9 JH |
547 | unsigned long *size, |
548 | unsigned char *sha1_ret); | |
f4913f91 | 549 | |
81776315 JH |
550 | extern struct object *peel_to_type(const char *name, int namelen, |
551 | struct object *o, enum object_type); | |
552 | ||
73013afd JH |
553 | enum date_mode { |
554 | DATE_NORMAL = 0, | |
555 | DATE_RELATIVE, | |
556 | DATE_SHORT, | |
557 | DATE_LOCAL, | |
558 | DATE_ISO8601, | |
559 | DATE_RFC2822 | |
560 | }; | |
561 | ||
f8493ec0 | 562 | const char *show_date(unsigned long time, int timezone, enum date_mode mode); |
2a39064c | 563 | int parse_date(const char *date, char *buf, int bufsize); |
ecee9d9e | 564 | void datestamp(char *buf, int bufsize); |
3c07b1d1 | 565 | unsigned long approxidate(const char *); |
856665f8 | 566 | enum date_mode parse_date_format(const char *format); |
ecee9d9e | 567 | |
774751a8 JH |
568 | #define IDENT_WARN_ON_NO_NAME 1 |
569 | #define IDENT_ERROR_ON_NO_NAME 2 | |
570 | #define IDENT_NO_DATE 4 | |
749be728 JH |
571 | extern const char *git_author_info(int); |
572 | extern const char *git_committer_info(int); | |
798123af | 573 | extern const char *fmt_ident(const char *name, const char *email, const char *date_str, int); |
d9ccfe77 | 574 | extern const char *fmt_name(const char *name, const char *email); |
6aa33f40 | 575 | |
12dccc16 LT |
576 | struct checkout { |
577 | const char *base_dir; | |
578 | int base_dir_len; | |
579 | unsigned force:1, | |
580 | quiet:1, | |
581 | not_new:1, | |
582 | refresh_cache:1; | |
583 | }; | |
584 | ||
efbc5831 | 585 | extern int checkout_entry(struct cache_entry *ce, const struct checkout *state, char *topath); |
f859c846 | 586 | extern int has_symlink_leading_path(const char *name, char *last_symlink); |
12dccc16 | 587 | |
9a217f2a | 588 | extern struct alternate_object_database { |
d5a63b99 | 589 | struct alternate_object_database *next; |
9a217f2a | 590 | char *name; |
8f1d2e6f | 591 | char base[FLEX_ARRAY]; /* more */ |
d5a63b99 | 592 | } *alt_odb_list; |
9a217f2a JH |
593 | extern void prepare_alt_odb(void); |
594 | ||
c41ee586 SP |
595 | struct pack_window { |
596 | struct pack_window *next; | |
597 | unsigned char *base; | |
598 | off_t offset; | |
599 | size_t len; | |
600 | unsigned int last_used; | |
601 | unsigned int inuse_cnt; | |
602 | }; | |
603 | ||
9a217f2a JH |
604 | extern struct packed_git { |
605 | struct packed_git *next; | |
c41ee586 | 606 | struct pack_window *windows; |
2dc3a234 | 607 | off_t pack_size; |
57059091 NP |
608 | const void *index_data; |
609 | size_t index_size; | |
610 | uint32_t num_objects; | |
42873078 | 611 | int index_version; |
57059091 | 612 | time_t mtime; |
9bc879c1 | 613 | int pack_fd; |
9d835df2 | 614 | int pack_local; |
bf592c50 | 615 | unsigned char sha1[20]; |
8f1d2e6f JH |
616 | /* something like ".git/objects/pack/xxxxx.pack" */ |
617 | char pack_name[FLEX_ARRAY]; /* more */ | |
9a217f2a | 618 | } *packed_git; |
f3bf9224 JH |
619 | |
620 | struct pack_entry { | |
c4001d92 | 621 | off_t offset; |
f3bf9224 JH |
622 | unsigned char sha1[20]; |
623 | struct packed_git *p; | |
624 | }; | |
625 | ||
d1c133f5 LT |
626 | struct ref { |
627 | struct ref *next; | |
628 | unsigned char old_sha1[20]; | |
629 | unsigned char new_sha1[20]; | |
9f8a15c7 SP |
630 | unsigned int force:1, |
631 | merge:1, | |
632 | nonfastforward:1, | |
633 | deletion:1; | |
8736a848 JK |
634 | enum { |
635 | REF_STATUS_NONE = 0, | |
636 | REF_STATUS_OK, | |
637 | REF_STATUS_REJECT_NONFASTFORWARD, | |
638 | REF_STATUS_REJECT_NODELETE, | |
639 | REF_STATUS_UPTODATE, | |
ca74c458 | 640 | REF_STATUS_REMOTE_REJECT, |
2a0fe89a | 641 | REF_STATUS_EXPECTING_REPORT, |
8736a848 | 642 | } status; |
2a0fe89a | 643 | char *remote_status; |
f88395ac | 644 | struct ref *peer_ref; /* when renaming */ |
8f1d2e6f | 645 | char name[FLEX_ARRAY]; /* more */ |
d1c133f5 LT |
646 | }; |
647 | ||
2718ff09 LT |
648 | #define REF_NORMAL (1u << 0) |
649 | #define REF_HEADS (1u << 1) | |
650 | #define REF_TAGS (1u << 2) | |
651 | ||
cda69f48 JK |
652 | extern struct ref *find_ref_by_name(struct ref *list, const char *name); |
653 | ||
7841ce79 | 654 | #define CONNECT_VERBOSE (1u << 0) |
4577370e | 655 | extern struct child_process *git_connect(int fd[2], const char *url, const char *prog, int flags); |
98158e9c | 656 | extern int finish_connect(struct child_process *conn); |
013e7c7f | 657 | extern int path_match(const char *path, int nr, char **match); |
41cb7488 | 658 | extern int get_ack(int fd, unsigned char *result_sha1); |
2718ff09 | 659 | extern struct ref **get_remote_heads(int in, struct ref **list, int nr_match, char **match, unsigned int flags); |
211b5f9e | 660 | extern int server_supports(const char *feature); |
f7192598 | 661 | |
bf592c50 | 662 | extern struct packed_git *parse_pack_index(unsigned char *sha1); |
2ab141a2 | 663 | extern struct packed_git *parse_pack_index_file(const unsigned char *sha1, |
42873078 | 664 | const char *idx_path); |
bf592c50 | 665 | |
9a217f2a | 666 | extern void prepare_packed_git(void); |
fc04c412 | 667 | extern void reprepare_packed_git(void); |
bf592c50 DB |
668 | extern void install_packed_git(struct packed_git *pack); |
669 | ||
a6080a0a | 670 | extern struct packed_git *find_sha1_pack(const unsigned char *sha1, |
bf592c50 DB |
671 | struct packed_git *packs); |
672 | ||
276bc2ca | 673 | extern void pack_report(void); |
d079837e | 674 | extern int open_pack_index(struct packed_git *); |
c4001d92 | 675 | extern unsigned char* use_pack(struct packed_git *, struct pack_window **, off_t, unsigned int *); |
c9ced051 | 676 | extern void close_pack_windows(struct packed_git *); |
03e79c88 | 677 | extern void unuse_pack(struct pack_window **); |
42873078 | 678 | extern struct packed_git *add_packed_git(const char *, int, int); |
d079837e | 679 | extern const unsigned char *nth_packed_object_sha1(struct packed_git *, uint32_t); |
c4001d92 SP |
680 | extern off_t find_pack_entry_one(const unsigned char *, struct packed_git *); |
681 | extern void *unpack_entry(struct packed_git *, off_t, enum object_type *, unsigned long *); | |
72518e9c | 682 | extern unsigned long unpack_object_header_gently(const unsigned char *buf, unsigned long len, enum object_type *type, unsigned long *sizep); |
54dab52a | 683 | extern unsigned long get_size_from_delta(struct packed_git *, struct pack_window **, off_t); |
c4001d92 | 684 | extern const char *packed_object_info_detail(struct packed_git *, off_t, unsigned long *, unsigned long *, unsigned int *, unsigned char *); |
000dfd3f | 685 | extern int matches_pack_name(struct packed_git *p, const char *name); |
9a217f2a | 686 | |
8f3f9b09 JH |
687 | /* Dumb servers support */ |
688 | extern int update_server_info(int); | |
689 | ||
17712991 LT |
690 | typedef int (*config_fn_t)(const char *, const char *); |
691 | extern int git_default_config(const char *, const char *); | |
4f629539 | 692 | extern int git_config_from_file(config_fn_t fn, const char *); |
17712991 | 693 | extern int git_config(config_fn_t fn); |
0b87b6e0 BD |
694 | extern int git_parse_long(const char *, long *); |
695 | extern int git_parse_ulong(const char *, unsigned long *); | |
17712991 | 696 | extern int git_config_int(const char *, const char *); |
0b87b6e0 | 697 | extern unsigned long git_config_ulong(const char *, const char *); |
17712991 | 698 | extern int git_config_bool(const char *, const char *); |
ea5105a5 | 699 | extern int git_config_string(const char **, const char *, const char *); |
10bea152 | 700 | extern int git_config_set(const char *, const char *); |
4ddba79d | 701 | extern int git_config_set_multivar(const char *, const char *, const char *, int); |
0667fcfb | 702 | extern int git_config_rename_section(const char *, const char *); |
506b17b1 | 703 | extern const char *git_etc_gitconfig(void); |
ab9cb76f | 704 | extern int check_repository_format_version(const char *var, const char *value); |
ab88c363 JK |
705 | extern int git_env_bool(const char *, int); |
706 | extern int git_config_system(void); | |
707 | extern int git_config_global(void); | |
40ea4ed9 | 708 | extern int config_error_nonbool(const char *); |
17712991 | 709 | |
e1b10391 LT |
710 | #define MAX_GITNAME (1000) |
711 | extern char git_default_email[MAX_GITNAME]; | |
712 | extern char git_default_name[MAX_GITNAME]; | |
713 | ||
1a8f2741 | 714 | extern const char *git_commit_encoding; |
3a55602e | 715 | extern const char *git_log_output_encoding; |
4e72dcec | 716 | |
06f59e9f TT |
717 | /* IO helper functions */ |
718 | extern void maybe_flush_or_die(FILE *, const char *); | |
f3123c4a | 719 | extern int copy_fd(int ifd, int ofd); |
1468bd47 | 720 | extern int copy_file(const char *dst, const char *src, int mode); |
93d26e4c | 721 | extern int read_in_full(int fd, void *buf, size_t count); |
e0814056 | 722 | extern int write_in_full(int fd, const void *buf, size_t count); |
7230e6d0 | 723 | extern void write_or_die(int fd, const void *buf, size_t count); |
6ce4e61f | 724 | extern int write_or_whine(int fd, const void *buf, size_t count, const char *msg); |
e0814056 | 725 | extern int write_or_whine_pipe(int fd, const void *buf, size_t count, const char *msg); |
ad897215 | 726 | |
f67b45f8 LT |
727 | /* pager.c */ |
728 | extern void setup_pager(void); | |
872da32d | 729 | extern const char *pager_program; |
6e9af863 | 730 | extern int pager_in_use(void); |
aa086eb8 | 731 | extern int pager_use_color; |
f67b45f8 | 732 | |
ee9601e6 | 733 | extern const char *editor_program; |
dfb068be | 734 | extern const char *excludes_file; |
4d87b9c5 | 735 | |
051308f6 | 736 | /* base85 */ |
f9815772 JM |
737 | int decode_85(char *dst, const char *line, int linelen); |
738 | void encode_85(char *buf, const unsigned char *data, int bytes); | |
051308f6 | 739 | |
855419f7 | 740 | /* alloc.c */ |
100c5f3b LT |
741 | extern void *alloc_blob_node(void); |
742 | extern void *alloc_tree_node(void); | |
743 | extern void *alloc_commit_node(void); | |
744 | extern void *alloc_tag_node(void); | |
745 | extern void *alloc_object_node(void); | |
855419f7 LT |
746 | extern void alloc_report(void); |
747 | ||
6ce4e61f | 748 | /* trace.c */ |
6ce4e61f | 749 | extern void trace_printf(const char *format, ...); |
b319ce4c | 750 | extern void trace_argv_printf(const char **argv, const char *format, ...); |
6ce4e61f | 751 | |
6c510bee | 752 | /* convert.c */ |
5ecd293d | 753 | /* returns 1 if *dst was used */ |
21e5ad50 SP |
754 | extern int convert_to_git(const char *path, const char *src, size_t len, |
755 | struct strbuf *dst, enum safe_crlf checksafe); | |
5ecd293d | 756 | extern int convert_to_working_tree(const char *path, const char *src, size_t len, struct strbuf *dst); |
6c510bee | 757 | |
b6ec1d61 JH |
758 | /* add */ |
759 | void add_files_to_cache(int verbose, const char *prefix, const char **pathspec); | |
760 | ||
aecbf914 JH |
761 | /* diff.c */ |
762 | extern int diff_auto_refresh_index; | |
763 | ||
68faf689 JH |
764 | /* match-trees.c */ |
765 | void shift_tree(const unsigned char *, const unsigned char *, unsigned char *, int); | |
766 | ||
a9cc857a JH |
767 | /* |
768 | * whitespace rules. | |
769 | * used by both diff and apply | |
770 | */ | |
771 | #define WS_TRAILING_SPACE 01 | |
772 | #define WS_SPACE_BEFORE_TAB 02 | |
459fa6d0 | 773 | #define WS_INDENT_WITH_NON_TAB 04 |
b2979ff5 | 774 | #define WS_CR_AT_EOL 010 |
a9cc857a | 775 | #define WS_DEFAULT_RULE (WS_TRAILING_SPACE|WS_SPACE_BEFORE_TAB) |
cf1b7869 JH |
776 | extern unsigned whitespace_rule_cfg; |
777 | extern unsigned whitespace_rule(const char *); | |
778 | extern unsigned parse_whitespace_rule(const char *); | |
c1795bb0 WC |
779 | extern unsigned check_and_emit_line(const char *line, int len, unsigned ws_rule, |
780 | FILE *stream, const char *set, | |
781 | const char *reset, const char *ws); | |
782 | extern char *whitespace_error_string(unsigned ws); | |
fe3403c3 | 783 | extern int ws_fix_copy(char *, const char *, int, unsigned, int *); |
a9cc857a | 784 | |
ee425e46 JH |
785 | /* ls-files */ |
786 | int pathspec_match(const char **spec, char *matched, const char *filename, int skiplen); | |
787 | int report_path_error(const char *ps_matched, const char **pathspec, int prefix_offset); | |
788 | void overlay_tree_on_cache(const char *tree_name, const char *prefix); | |
789 | ||
94351118 JK |
790 | char *alias_lookup(const char *alias); |
791 | ||
e83c5163 | 792 | #endif /* CACHE_H */ |