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1 | #ifndef CACHE_H | |
2 | #define CACHE_H | |
3 | ||
4 | #include "git-compat-util.h" | |
5 | ||
6 | #include SHA1_HEADER | |
7 | #include <zlib.h> | |
8 | ||
9 | #if ZLIB_VERNUM < 0x1200 | |
10 | #define deflateBound(c,s) ((s) + (((s) + 7) >> 3) + (((s) + 63) >> 6) + 11) | |
11 | #endif | |
12 | ||
13 | #if defined(DT_UNKNOWN) && !defined(NO_D_TYPE_IN_DIRENT) | |
14 | #define DTYPE(de) ((de)->d_type) | |
15 | #else | |
16 | #undef DT_UNKNOWN | |
17 | #undef DT_DIR | |
18 | #undef DT_REG | |
19 | #undef DT_LNK | |
20 | #define DT_UNKNOWN 0 | |
21 | #define DT_DIR 1 | |
22 | #define DT_REG 2 | |
23 | #define DT_LNK 3 | |
24 | #define DTYPE(de) DT_UNKNOWN | |
25 | #endif | |
26 | ||
27 | /* unknown mode (impossible combination S_IFIFO|S_IFCHR) */ | |
28 | #define S_IFINVALID 0030000 | |
29 | ||
30 | /* | |
31 | * A "directory link" is a link to another git directory. | |
32 | * | |
33 | * The value 0160000 is not normally a valid mode, and | |
34 | * also just happens to be S_IFDIR + S_IFLNK | |
35 | * | |
36 | * NOTE! We *really* shouldn't depend on the S_IFxxx macros | |
37 | * always having the same values everywhere. We should use | |
38 | * our internal git values for these things, and then we can | |
39 | * translate that to the OS-specific value. It just so | |
40 | * happens that everybody shares the same bit representation | |
41 | * in the UNIX world (and apparently wider too..) | |
42 | */ | |
43 | #define S_IFGITLINK 0160000 | |
44 | #define S_ISGITLINK(m) (((m) & S_IFMT) == S_IFGITLINK) | |
45 | ||
46 | /* | |
47 | * Intensive research over the course of many years has shown that | |
48 | * port 9418 is totally unused by anything else. Or | |
49 | * | |
50 | * Your search - "port 9418" - did not match any documents. | |
51 | * | |
52 | * as www.google.com puts it. | |
53 | * | |
54 | * This port has been properly assigned for git use by IANA: | |
55 | * git (Assigned-9418) [I06-050728-0001]. | |
56 | * | |
57 | * git 9418/tcp git pack transfer service | |
58 | * git 9418/udp git pack transfer service | |
59 | * | |
60 | * with Linus Torvalds <torvalds@osdl.org> as the point of | |
61 | * contact. September 2005. | |
62 | * | |
63 | * See http://www.iana.org/assignments/port-numbers | |
64 | */ | |
65 | #define DEFAULT_GIT_PORT 9418 | |
66 | ||
67 | /* | |
68 | * Basic data structures for the directory cache | |
69 | */ | |
70 | ||
71 | #define CACHE_SIGNATURE 0x44495243 /* "DIRC" */ | |
72 | struct cache_header { | |
73 | unsigned int hdr_signature; | |
74 | unsigned int hdr_version; | |
75 | unsigned int hdr_entries; | |
76 | }; | |
77 | ||
78 | /* | |
79 | * The "cache_time" is just the low 32 bits of the | |
80 | * time. It doesn't matter if it overflows - we only | |
81 | * check it for equality in the 32 bits we save. | |
82 | */ | |
83 | struct cache_time { | |
84 | unsigned int sec; | |
85 | unsigned int nsec; | |
86 | }; | |
87 | ||
88 | /* | |
89 | * dev/ino/uid/gid/size are also just tracked to the low 32 bits | |
90 | * Again - this is just a (very strong in practice) heuristic that | |
91 | * the inode hasn't changed. | |
92 | * | |
93 | * We save the fields in big-endian order to allow using the | |
94 | * index file over NFS transparently. | |
95 | */ | |
96 | struct cache_entry { | |
97 | struct cache_time ce_ctime; | |
98 | struct cache_time ce_mtime; | |
99 | unsigned int ce_dev; | |
100 | unsigned int ce_ino; | |
101 | unsigned int ce_mode; | |
102 | unsigned int ce_uid; | |
103 | unsigned int ce_gid; | |
104 | unsigned int ce_size; | |
105 | unsigned char sha1[20]; | |
106 | unsigned short ce_flags; | |
107 | char name[FLEX_ARRAY]; /* more */ | |
108 | }; | |
109 | ||
110 | #define CE_NAMEMASK (0x0fff) | |
111 | #define CE_STAGEMASK (0x3000) | |
112 | #define CE_UPDATE (0x4000) | |
113 | #define CE_VALID (0x8000) | |
114 | #define CE_STAGESHIFT 12 | |
115 | ||
116 | #define create_ce_flags(len, stage) htons((len) | ((stage) << CE_STAGESHIFT)) | |
117 | #define ce_namelen(ce) (CE_NAMEMASK & ntohs((ce)->ce_flags)) | |
118 | #define ce_size(ce) cache_entry_size(ce_namelen(ce)) | |
119 | #define ce_stage(ce) ((CE_STAGEMASK & ntohs((ce)->ce_flags)) >> CE_STAGESHIFT) | |
120 | ||
121 | #define ce_permissions(mode) (((mode) & 0100) ? 0755 : 0644) | |
122 | static inline unsigned int create_ce_mode(unsigned int mode) | |
123 | { | |
124 | if (S_ISLNK(mode)) | |
125 | return htonl(S_IFLNK); | |
126 | if (S_ISDIR(mode) || S_ISGITLINK(mode)) | |
127 | return htonl(S_IFGITLINK); | |
128 | return htonl(S_IFREG | ce_permissions(mode)); | |
129 | } | |
130 | static inline unsigned int ce_mode_from_stat(struct cache_entry *ce, unsigned int mode) | |
131 | { | |
132 | extern int trust_executable_bit, has_symlinks; | |
133 | if (!has_symlinks && S_ISREG(mode) && | |
134 | ce && S_ISLNK(ntohl(ce->ce_mode))) | |
135 | return ce->ce_mode; | |
136 | if (!trust_executable_bit && S_ISREG(mode)) { | |
137 | if (ce && S_ISREG(ntohl(ce->ce_mode))) | |
138 | return ce->ce_mode; | |
139 | return create_ce_mode(0666); | |
140 | } | |
141 | return create_ce_mode(mode); | |
142 | } | |
143 | #define canon_mode(mode) \ | |
144 | (S_ISREG(mode) ? (S_IFREG | ce_permissions(mode)) : \ | |
145 | S_ISLNK(mode) ? S_IFLNK : S_ISDIR(mode) ? S_IFDIR : S_IFGITLINK) | |
146 | ||
147 | #define cache_entry_size(len) ((offsetof(struct cache_entry,name) + (len) + 8) & ~7) | |
148 | ||
149 | struct index_state { | |
150 | struct cache_entry **cache; | |
151 | unsigned int cache_nr, cache_alloc, cache_changed; | |
152 | struct cache_tree *cache_tree; | |
153 | time_t timestamp; | |
154 | void *mmap; | |
155 | size_t mmap_size; | |
156 | }; | |
157 | ||
158 | extern struct index_state the_index; | |
159 | ||
160 | #ifndef NO_THE_INDEX_COMPATIBILITY_MACROS | |
161 | #define active_cache (the_index.cache) | |
162 | #define active_nr (the_index.cache_nr) | |
163 | #define active_alloc (the_index.cache_alloc) | |
164 | #define active_cache_changed (the_index.cache_changed) | |
165 | #define active_cache_tree (the_index.cache_tree) | |
166 | ||
167 | #define read_cache() read_index(&the_index) | |
168 | #define read_cache_from(path) read_index_from(&the_index, (path)) | |
169 | #define write_cache(newfd, cache, entries) write_index(&the_index, (newfd)) | |
170 | #define discard_cache() discard_index(&the_index) | |
171 | #define cache_name_pos(name, namelen) index_name_pos(&the_index,(name),(namelen)) | |
172 | #define add_cache_entry(ce, option) add_index_entry(&the_index, (ce), (option)) | |
173 | #define remove_cache_entry_at(pos) remove_index_entry_at(&the_index, (pos)) | |
174 | #define remove_file_from_cache(path) remove_file_from_index(&the_index, (path)) | |
175 | #define add_file_to_cache(path, verbose) add_file_to_index(&the_index, (path), (verbose)) | |
176 | #define refresh_cache(flags) refresh_index(&the_index, (flags), NULL, NULL) | |
177 | #define ce_match_stat(ce, st, really) ie_match_stat(&the_index, (ce), (st), (really)) | |
178 | #define ce_modified(ce, st, really) ie_modified(&the_index, (ce), (st), (really)) | |
179 | #endif | |
180 | ||
181 | enum object_type { | |
182 | OBJ_BAD = -1, | |
183 | OBJ_NONE = 0, | |
184 | OBJ_COMMIT = 1, | |
185 | OBJ_TREE = 2, | |
186 | OBJ_BLOB = 3, | |
187 | OBJ_TAG = 4, | |
188 | /* 5 for future expansion */ | |
189 | OBJ_OFS_DELTA = 6, | |
190 | OBJ_REF_DELTA = 7, | |
191 | OBJ_MAX, | |
192 | }; | |
193 | ||
194 | #define GIT_DIR_ENVIRONMENT "GIT_DIR" | |
195 | #define GIT_WORK_TREE_ENVIRONMENT "GIT_WORK_TREE" | |
196 | #define DEFAULT_GIT_DIR_ENVIRONMENT ".git" | |
197 | #define DB_ENVIRONMENT "GIT_OBJECT_DIRECTORY" | |
198 | #define INDEX_ENVIRONMENT "GIT_INDEX_FILE" | |
199 | #define GRAFT_ENVIRONMENT "GIT_GRAFT_FILE" | |
200 | #define TEMPLATE_DIR_ENVIRONMENT "GIT_TEMPLATE_DIR" | |
201 | #define CONFIG_ENVIRONMENT "GIT_CONFIG" | |
202 | #define CONFIG_LOCAL_ENVIRONMENT "GIT_CONFIG_LOCAL" | |
203 | #define EXEC_PATH_ENVIRONMENT "GIT_EXEC_PATH" | |
204 | #define GITATTRIBUTES_FILE ".gitattributes" | |
205 | #define INFOATTRIBUTES_FILE "info/attributes" | |
206 | #define ATTRIBUTE_MACRO_PREFIX "[attr]" | |
207 | ||
208 | extern int is_bare_repository_cfg; | |
209 | extern int is_bare_repository(void); | |
210 | extern int is_inside_git_dir(void); | |
211 | extern char *git_work_tree_cfg; | |
212 | extern int is_inside_work_tree(void); | |
213 | extern const char *get_git_dir(void); | |
214 | extern char *get_object_directory(void); | |
215 | extern char *get_refs_directory(void); | |
216 | extern char *get_index_file(void); | |
217 | extern char *get_graft_file(void); | |
218 | extern int set_git_dir(const char *path); | |
219 | extern const char *get_git_work_tree(void); | |
220 | ||
221 | #define ALTERNATE_DB_ENVIRONMENT "GIT_ALTERNATE_OBJECT_DIRECTORIES" | |
222 | ||
223 | extern const char **get_pathspec(const char *prefix, const char **pathspec); | |
224 | extern const char *setup_git_directory_gently(int *); | |
225 | extern const char *setup_git_directory(void); | |
226 | extern const char *prefix_path(const char *prefix, int len, const char *path); | |
227 | extern const char *prefix_filename(const char *prefix, int len, const char *path); | |
228 | extern void verify_filename(const char *prefix, const char *name); | |
229 | extern void verify_non_filename(const char *prefix, const char *name); | |
230 | ||
231 | #define alloc_nr(x) (((x)+16)*3/2) | |
232 | ||
233 | /* | |
234 | * Realloc the buffer pointed at by variable 'x' so that it can hold | |
235 | * at least 'nr' entries; the number of entries currently allocated | |
236 | * is 'alloc', using the standard growing factor alloc_nr() macro. | |
237 | * | |
238 | * DO NOT USE any expression with side-effect for 'x' or 'alloc'. | |
239 | */ | |
240 | #define ALLOC_GROW(x, nr, alloc) \ | |
241 | do { \ | |
242 | if ((nr) > alloc) { \ | |
243 | if (alloc_nr(alloc) < (nr)) \ | |
244 | alloc = (nr); \ | |
245 | else \ | |
246 | alloc = alloc_nr(alloc); \ | |
247 | x = xrealloc((x), alloc * sizeof(*(x))); \ | |
248 | } \ | |
249 | } while(0) | |
250 | ||
251 | /* Initialize and use the cache information */ | |
252 | extern int read_index(struct index_state *); | |
253 | extern int read_index_from(struct index_state *, const char *path); | |
254 | extern int write_index(struct index_state *, int newfd); | |
255 | extern int discard_index(struct index_state *); | |
256 | extern int verify_path(const char *path); | |
257 | extern int index_name_pos(struct index_state *, const char *name, int namelen); | |
258 | #define ADD_CACHE_OK_TO_ADD 1 /* Ok to add */ | |
259 | #define ADD_CACHE_OK_TO_REPLACE 2 /* Ok to replace file/directory */ | |
260 | #define ADD_CACHE_SKIP_DFCHECK 4 /* Ok to skip DF conflict checks */ | |
261 | #define ADD_CACHE_JUST_APPEND 8 /* Append only; tree.c::read_tree() */ | |
262 | extern int add_index_entry(struct index_state *, struct cache_entry *ce, int option); | |
263 | extern struct cache_entry *refresh_cache_entry(struct cache_entry *ce, int really); | |
264 | extern int remove_index_entry_at(struct index_state *, int pos); | |
265 | extern int remove_file_from_index(struct index_state *, const char *path); | |
266 | extern int add_file_to_index(struct index_state *, const char *path, int verbose); | |
267 | extern struct cache_entry *make_cache_entry(unsigned int mode, const unsigned char *sha1, const char *path, int stage, int refresh); | |
268 | extern int ce_same_name(struct cache_entry *a, struct cache_entry *b); | |
269 | extern int ie_match_stat(struct index_state *, struct cache_entry *, struct stat *, int); | |
270 | extern int ie_modified(struct index_state *, struct cache_entry *, struct stat *, int); | |
271 | extern int ce_path_match(const struct cache_entry *ce, const char **pathspec); | |
272 | extern int index_fd(unsigned char *sha1, int fd, struct stat *st, int write_object, enum object_type type, const char *path); | |
273 | extern int read_fd(int fd, char **return_buf, unsigned long *return_size); | |
274 | extern int index_pipe(unsigned char *sha1, int fd, const char *type, int write_object); | |
275 | extern int index_path(unsigned char *sha1, const char *path, struct stat *st, int write_object); | |
276 | extern void fill_stat_cache_info(struct cache_entry *ce, struct stat *st); | |
277 | ||
278 | #define REFRESH_REALLY 0x0001 /* ignore_valid */ | |
279 | #define REFRESH_UNMERGED 0x0002 /* allow unmerged */ | |
280 | #define REFRESH_QUIET 0x0004 /* be quiet about it */ | |
281 | #define REFRESH_IGNORE_MISSING 0x0008 /* ignore non-existent */ | |
282 | extern int refresh_index(struct index_state *, unsigned int flags, const char **pathspec, char *seen); | |
283 | ||
284 | struct lock_file { | |
285 | struct lock_file *next; | |
286 | pid_t owner; | |
287 | char on_list; | |
288 | char filename[PATH_MAX]; | |
289 | }; | |
290 | extern int hold_lock_file_for_update(struct lock_file *, const char *path, int); | |
291 | extern int commit_lock_file(struct lock_file *); | |
292 | ||
293 | extern int hold_locked_index(struct lock_file *, int); | |
294 | extern int commit_locked_index(struct lock_file *); | |
295 | extern void set_alternate_index_output(const char *); | |
296 | ||
297 | extern void rollback_lock_file(struct lock_file *); | |
298 | extern int delete_ref(const char *, const unsigned char *sha1); | |
299 | ||
300 | /* Environment bits from configuration mechanism */ | |
301 | extern int trust_executable_bit; | |
302 | extern int quote_path_fully; | |
303 | extern int has_symlinks; | |
304 | extern int assume_unchanged; | |
305 | extern int prefer_symlink_refs; | |
306 | extern int log_all_ref_updates; | |
307 | extern int warn_ambiguous_refs; | |
308 | extern int shared_repository; | |
309 | extern const char *apply_default_whitespace; | |
310 | extern int zlib_compression_level; | |
311 | extern int core_compression_level; | |
312 | extern int core_compression_seen; | |
313 | extern size_t packed_git_window_size; | |
314 | extern size_t packed_git_limit; | |
315 | extern size_t delta_base_cache_limit; | |
316 | extern int auto_crlf; | |
317 | ||
318 | #define GIT_REPO_VERSION 0 | |
319 | extern int repository_format_version; | |
320 | extern int check_repository_format(void); | |
321 | ||
322 | #define MTIME_CHANGED 0x0001 | |
323 | #define CTIME_CHANGED 0x0002 | |
324 | #define OWNER_CHANGED 0x0004 | |
325 | #define MODE_CHANGED 0x0008 | |
326 | #define INODE_CHANGED 0x0010 | |
327 | #define DATA_CHANGED 0x0020 | |
328 | #define TYPE_CHANGED 0x0040 | |
329 | ||
330 | /* Return a statically allocated filename matching the sha1 signature */ | |
331 | extern char *mkpath(const char *fmt, ...) __attribute__((format (printf, 1, 2))); | |
332 | extern char *git_path(const char *fmt, ...) __attribute__((format (printf, 1, 2))); | |
333 | extern char *sha1_file_name(const unsigned char *sha1); | |
334 | extern char *sha1_pack_name(const unsigned char *sha1); | |
335 | extern char *sha1_pack_index_name(const unsigned char *sha1); | |
336 | extern const char *find_unique_abbrev(const unsigned char *sha1, int); | |
337 | extern const unsigned char null_sha1[20]; | |
338 | static inline int is_null_sha1(const unsigned char *sha1) | |
339 | { | |
340 | return !memcmp(sha1, null_sha1, 20); | |
341 | } | |
342 | static inline int hashcmp(const unsigned char *sha1, const unsigned char *sha2) | |
343 | { | |
344 | return memcmp(sha1, sha2, 20); | |
345 | } | |
346 | static inline void hashcpy(unsigned char *sha_dst, const unsigned char *sha_src) | |
347 | { | |
348 | memcpy(sha_dst, sha_src, 20); | |
349 | } | |
350 | static inline void hashclr(unsigned char *hash) | |
351 | { | |
352 | memset(hash, 0, 20); | |
353 | } | |
354 | ||
355 | int git_mkstemp(char *path, size_t n, const char *template); | |
356 | ||
357 | enum sharedrepo { | |
358 | PERM_UMASK = 0, | |
359 | PERM_GROUP, | |
360 | PERM_EVERYBODY | |
361 | }; | |
362 | int git_config_perm(const char *var, const char *value); | |
363 | int adjust_shared_perm(const char *path); | |
364 | int safe_create_leading_directories(char *path); | |
365 | char *enter_repo(char *path, int strict); | |
366 | static inline int is_absolute_path(const char *path) | |
367 | { | |
368 | return path[0] == '/'; | |
369 | } | |
370 | const char *make_absolute_path(const char *path); | |
371 | ||
372 | /* Read and unpack a sha1 file into memory, write memory to a sha1 file */ | |
373 | extern int sha1_object_info(const unsigned char *, unsigned long *); | |
374 | extern void * read_sha1_file(const unsigned char *sha1, enum object_type *type, unsigned long *size); | |
375 | extern int hash_sha1_file(const void *buf, unsigned long len, const char *type, unsigned char *sha1); | |
376 | extern int write_sha1_file(void *buf, unsigned long len, const char *type, unsigned char *return_sha1); | |
377 | extern int pretend_sha1_file(void *, unsigned long, enum object_type, unsigned char *); | |
378 | ||
379 | extern int check_sha1_signature(const unsigned char *sha1, void *buf, unsigned long size, const char *type); | |
380 | ||
381 | extern int write_sha1_from_fd(const unsigned char *sha1, int fd, char *buffer, | |
382 | size_t bufsize, size_t *bufposn); | |
383 | extern int write_sha1_to_fd(int fd, const unsigned char *sha1); | |
384 | extern int move_temp_to_file(const char *tmpfile, const char *filename); | |
385 | ||
386 | extern int has_sha1_pack(const unsigned char *sha1, const char **ignore); | |
387 | extern int has_sha1_file(const unsigned char *sha1); | |
388 | ||
389 | extern int has_pack_file(const unsigned char *sha1); | |
390 | extern int has_pack_index(const unsigned char *sha1); | |
391 | ||
392 | extern const signed char hexval_table[256]; | |
393 | static inline unsigned int hexval(unsigned char c) | |
394 | { | |
395 | return hexval_table[c]; | |
396 | } | |
397 | ||
398 | /* Convert to/from hex/sha1 representation */ | |
399 | #define MINIMUM_ABBREV 4 | |
400 | #define DEFAULT_ABBREV 7 | |
401 | ||
402 | extern int get_sha1(const char *str, unsigned char *sha1); | |
403 | extern int get_sha1_with_mode(const char *str, unsigned char *sha1, unsigned *mode); | |
404 | extern int get_sha1_hex(const char *hex, unsigned char *sha1); | |
405 | extern char *sha1_to_hex(const unsigned char *sha1); /* static buffer result! */ | |
406 | extern int read_ref(const char *filename, unsigned char *sha1); | |
407 | extern const char *resolve_ref(const char *path, unsigned char *sha1, int, int *); | |
408 | extern int dwim_ref(const char *str, int len, unsigned char *sha1, char **ref); | |
409 | extern int dwim_log(const char *str, int len, unsigned char *sha1, char **ref); | |
410 | ||
411 | extern int create_symref(const char *ref, const char *refs_heads_master, const char *logmsg); | |
412 | extern int validate_headref(const char *ref); | |
413 | ||
414 | extern int base_name_compare(const char *name1, int len1, int mode1, const char *name2, int len2, int mode2); | |
415 | extern int cache_name_compare(const char *name1, int len1, const char *name2, int len2); | |
416 | ||
417 | extern void *read_object_with_reference(const unsigned char *sha1, | |
418 | const char *required_type, | |
419 | unsigned long *size, | |
420 | unsigned char *sha1_ret); | |
421 | ||
422 | enum date_mode { | |
423 | DATE_NORMAL = 0, | |
424 | DATE_RELATIVE, | |
425 | DATE_SHORT, | |
426 | DATE_LOCAL, | |
427 | DATE_ISO8601, | |
428 | DATE_RFC2822 | |
429 | }; | |
430 | ||
431 | const char *show_date(unsigned long time, int timezone, enum date_mode mode); | |
432 | int parse_date(const char *date, char *buf, int bufsize); | |
433 | void datestamp(char *buf, int bufsize); | |
434 | unsigned long approxidate(const char *); | |
435 | ||
436 | extern const char *git_author_info(int); | |
437 | extern const char *git_committer_info(int); | |
438 | extern const char *fmt_ident(const char *name, const char *email, const char *date_str, int); | |
439 | ||
440 | struct checkout { | |
441 | const char *base_dir; | |
442 | int base_dir_len; | |
443 | unsigned force:1, | |
444 | quiet:1, | |
445 | not_new:1, | |
446 | refresh_cache:1; | |
447 | }; | |
448 | ||
449 | extern int checkout_entry(struct cache_entry *ce, const struct checkout *state, char *topath); | |
450 | extern int has_symlink_leading_path(const char *name, char *last_symlink); | |
451 | ||
452 | extern struct alternate_object_database { | |
453 | struct alternate_object_database *next; | |
454 | char *name; | |
455 | char base[FLEX_ARRAY]; /* more */ | |
456 | } *alt_odb_list; | |
457 | extern void prepare_alt_odb(void); | |
458 | ||
459 | struct pack_window { | |
460 | struct pack_window *next; | |
461 | unsigned char *base; | |
462 | off_t offset; | |
463 | size_t len; | |
464 | unsigned int last_used; | |
465 | unsigned int inuse_cnt; | |
466 | }; | |
467 | ||
468 | extern struct packed_git { | |
469 | struct packed_git *next; | |
470 | struct pack_window *windows; | |
471 | off_t pack_size; | |
472 | const void *index_data; | |
473 | size_t index_size; | |
474 | uint32_t num_objects; | |
475 | int index_version; | |
476 | time_t mtime; | |
477 | int pack_fd; | |
478 | int pack_local; | |
479 | unsigned char sha1[20]; | |
480 | /* something like ".git/objects/pack/xxxxx.pack" */ | |
481 | char pack_name[FLEX_ARRAY]; /* more */ | |
482 | } *packed_git; | |
483 | ||
484 | struct pack_entry { | |
485 | off_t offset; | |
486 | unsigned char sha1[20]; | |
487 | struct packed_git *p; | |
488 | }; | |
489 | ||
490 | struct ref { | |
491 | struct ref *next; | |
492 | unsigned char old_sha1[20]; | |
493 | unsigned char new_sha1[20]; | |
494 | unsigned char force; | |
495 | struct ref *peer_ref; /* when renaming */ | |
496 | char name[FLEX_ARRAY]; /* more */ | |
497 | }; | |
498 | ||
499 | #define REF_NORMAL (1u << 0) | |
500 | #define REF_HEADS (1u << 1) | |
501 | #define REF_TAGS (1u << 2) | |
502 | ||
503 | #define CONNECT_VERBOSE (1u << 0) | |
504 | extern pid_t git_connect(int fd[2], char *url, const char *prog, int flags); | |
505 | extern int finish_connect(pid_t pid); | |
506 | extern int path_match(const char *path, int nr, char **match); | |
507 | extern int get_ack(int fd, unsigned char *result_sha1); | |
508 | extern struct ref **get_remote_heads(int in, struct ref **list, int nr_match, char **match, unsigned int flags); | |
509 | extern int server_supports(const char *feature); | |
510 | ||
511 | extern struct packed_git *parse_pack_index(unsigned char *sha1); | |
512 | extern struct packed_git *parse_pack_index_file(const unsigned char *sha1, | |
513 | const char *idx_path); | |
514 | ||
515 | extern void prepare_packed_git(void); | |
516 | extern void reprepare_packed_git(void); | |
517 | extern void install_packed_git(struct packed_git *pack); | |
518 | ||
519 | extern struct packed_git *find_sha1_pack(const unsigned char *sha1, | |
520 | struct packed_git *packs); | |
521 | ||
522 | extern void pack_report(void); | |
523 | extern int open_pack_index(struct packed_git *); | |
524 | extern unsigned char* use_pack(struct packed_git *, struct pack_window **, off_t, unsigned int *); | |
525 | extern void unuse_pack(struct pack_window **); | |
526 | extern struct packed_git *add_packed_git(const char *, int, int); | |
527 | extern const unsigned char *nth_packed_object_sha1(struct packed_git *, uint32_t); | |
528 | extern off_t find_pack_entry_one(const unsigned char *, struct packed_git *); | |
529 | extern void *unpack_entry(struct packed_git *, off_t, enum object_type *, unsigned long *); | |
530 | extern unsigned long unpack_object_header_gently(const unsigned char *buf, unsigned long len, enum object_type *type, unsigned long *sizep); | |
531 | extern unsigned long get_size_from_delta(struct packed_git *, struct pack_window **, off_t); | |
532 | extern const char *packed_object_info_detail(struct packed_git *, off_t, unsigned long *, unsigned long *, unsigned int *, unsigned char *); | |
533 | ||
534 | /* Dumb servers support */ | |
535 | extern int update_server_info(int); | |
536 | ||
537 | typedef int (*config_fn_t)(const char *, const char *); | |
538 | extern int git_default_config(const char *, const char *); | |
539 | extern int git_config_from_file(config_fn_t fn, const char *); | |
540 | extern int git_config(config_fn_t fn); | |
541 | extern int git_parse_long(const char *, long *); | |
542 | extern int git_parse_ulong(const char *, unsigned long *); | |
543 | extern int git_config_int(const char *, const char *); | |
544 | extern unsigned long git_config_ulong(const char *, const char *); | |
545 | extern int git_config_bool(const char *, const char *); | |
546 | extern int git_config_set(const char *, const char *); | |
547 | extern int git_config_set_multivar(const char *, const char *, const char *, int); | |
548 | extern int git_config_rename_section(const char *, const char *); | |
549 | extern int check_repository_format_version(const char *var, const char *value); | |
550 | ||
551 | #define MAX_GITNAME (1000) | |
552 | extern char git_default_email[MAX_GITNAME]; | |
553 | extern char git_default_name[MAX_GITNAME]; | |
554 | ||
555 | extern const char *git_commit_encoding; | |
556 | extern const char *git_log_output_encoding; | |
557 | ||
558 | /* IO helper functions */ | |
559 | extern void maybe_flush_or_die(FILE *, const char *); | |
560 | extern int copy_fd(int ifd, int ofd); | |
561 | extern int read_in_full(int fd, void *buf, size_t count); | |
562 | extern int write_in_full(int fd, const void *buf, size_t count); | |
563 | extern void write_or_die(int fd, const void *buf, size_t count); | |
564 | extern int write_or_whine(int fd, const void *buf, size_t count, const char *msg); | |
565 | extern int write_or_whine_pipe(int fd, const void *buf, size_t count, const char *msg); | |
566 | ||
567 | /* pager.c */ | |
568 | extern void setup_pager(void); | |
569 | extern char *pager_program; | |
570 | extern int pager_in_use; | |
571 | extern int pager_use_color; | |
572 | ||
573 | extern char *editor_program; | |
574 | ||
575 | /* base85 */ | |
576 | int decode_85(char *dst, const char *line, int linelen); | |
577 | void encode_85(char *buf, const unsigned char *data, int bytes); | |
578 | ||
579 | /* alloc.c */ | |
580 | extern void *alloc_blob_node(void); | |
581 | extern void *alloc_tree_node(void); | |
582 | extern void *alloc_commit_node(void); | |
583 | extern void *alloc_tag_node(void); | |
584 | extern void *alloc_object_node(void); | |
585 | extern void alloc_report(void); | |
586 | ||
587 | /* trace.c */ | |
588 | extern int nfasprintf(char **str, const char *fmt, ...); | |
589 | extern int nfvasprintf(char **str, const char *fmt, va_list va); | |
590 | extern void trace_printf(const char *format, ...); | |
591 | extern void trace_argv_printf(const char **argv, int count, const char *format, ...); | |
592 | ||
593 | /* convert.c */ | |
594 | extern char *convert_to_git(const char *path, const char *src, unsigned long *sizep); | |
595 | extern char *convert_to_working_tree(const char *path, const char *src, unsigned long *sizep); | |
596 | extern void *convert_sha1_file(const char *path, const unsigned char *sha1, unsigned int mode, enum object_type *type, unsigned long *size); | |
597 | ||
598 | /* diff.c */ | |
599 | extern int diff_auto_refresh_index; | |
600 | ||
601 | /* match-trees.c */ | |
602 | void shift_tree(const unsigned char *, const unsigned char *, unsigned char *, int); | |
603 | ||
604 | #endif /* CACHE_H */ |