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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 "hashmap.h" | |
7 | #include "advice.h" | |
8 | #include "gettext.h" | |
9 | #include "convert.h" | |
10 | #include "trace.h" | |
11 | ||
12 | #include SHA1_HEADER | |
13 | #ifndef git_SHA_CTX | |
14 | #define git_SHA_CTX SHA_CTX | |
15 | #define git_SHA1_Init SHA1_Init | |
16 | #define git_SHA1_Update SHA1_Update | |
17 | #define git_SHA1_Final SHA1_Final | |
18 | #endif | |
19 | ||
20 | #include <zlib.h> | |
21 | typedef struct git_zstream { | |
22 | z_stream z; | |
23 | unsigned long avail_in; | |
24 | unsigned long avail_out; | |
25 | unsigned long total_in; | |
26 | unsigned long total_out; | |
27 | unsigned char *next_in; | |
28 | unsigned char *next_out; | |
29 | } git_zstream; | |
30 | ||
31 | void git_inflate_init(git_zstream *); | |
32 | void git_inflate_init_gzip_only(git_zstream *); | |
33 | void git_inflate_end(git_zstream *); | |
34 | int git_inflate(git_zstream *, int flush); | |
35 | ||
36 | void git_deflate_init(git_zstream *, int level); | |
37 | void git_deflate_init_gzip(git_zstream *, int level); | |
38 | void git_deflate_init_raw(git_zstream *, int level); | |
39 | void git_deflate_end(git_zstream *); | |
40 | int git_deflate_abort(git_zstream *); | |
41 | int git_deflate_end_gently(git_zstream *); | |
42 | int git_deflate(git_zstream *, int flush); | |
43 | unsigned long git_deflate_bound(git_zstream *, unsigned long); | |
44 | ||
45 | #if defined(DT_UNKNOWN) && !defined(NO_D_TYPE_IN_DIRENT) | |
46 | #define DTYPE(de) ((de)->d_type) | |
47 | #else | |
48 | #undef DT_UNKNOWN | |
49 | #undef DT_DIR | |
50 | #undef DT_REG | |
51 | #undef DT_LNK | |
52 | #define DT_UNKNOWN 0 | |
53 | #define DT_DIR 1 | |
54 | #define DT_REG 2 | |
55 | #define DT_LNK 3 | |
56 | #define DTYPE(de) DT_UNKNOWN | |
57 | #endif | |
58 | ||
59 | /* unknown mode (impossible combination S_IFIFO|S_IFCHR) */ | |
60 | #define S_IFINVALID 0030000 | |
61 | ||
62 | /* | |
63 | * A "directory link" is a link to another git directory. | |
64 | * | |
65 | * The value 0160000 is not normally a valid mode, and | |
66 | * also just happens to be S_IFDIR + S_IFLNK | |
67 | */ | |
68 | #define S_IFGITLINK 0160000 | |
69 | #define S_ISGITLINK(m) (((m) & S_IFMT) == S_IFGITLINK) | |
70 | ||
71 | /* | |
72 | * Some mode bits are also used internally for computations. | |
73 | * | |
74 | * They *must* not overlap with any valid modes, and they *must* not be emitted | |
75 | * to outside world - i.e. appear on disk or network. In other words, it's just | |
76 | * temporary fields, which we internally use, but they have to stay in-house. | |
77 | * | |
78 | * ( such approach is valid, as standard S_IF* fits into 16 bits, and in Git | |
79 | * codebase mode is `unsigned int` which is assumed to be at least 32 bits ) | |
80 | */ | |
81 | ||
82 | /* used internally in tree-diff */ | |
83 | #define S_DIFFTREE_IFXMIN_NEQ 0x80000000 | |
84 | ||
85 | ||
86 | /* | |
87 | * Intensive research over the course of many years has shown that | |
88 | * port 9418 is totally unused by anything else. Or | |
89 | * | |
90 | * Your search - "port 9418" - did not match any documents. | |
91 | * | |
92 | * as www.google.com puts it. | |
93 | * | |
94 | * This port has been properly assigned for git use by IANA: | |
95 | * git (Assigned-9418) [I06-050728-0001]. | |
96 | * | |
97 | * git 9418/tcp git pack transfer service | |
98 | * git 9418/udp git pack transfer service | |
99 | * | |
100 | * with Linus Torvalds <torvalds@osdl.org> as the point of | |
101 | * contact. September 2005. | |
102 | * | |
103 | * See http://www.iana.org/assignments/port-numbers | |
104 | */ | |
105 | #define DEFAULT_GIT_PORT 9418 | |
106 | ||
107 | /* | |
108 | * Basic data structures for the directory cache | |
109 | */ | |
110 | ||
111 | #define CACHE_SIGNATURE 0x44495243 /* "DIRC" */ | |
112 | struct cache_header { | |
113 | uint32_t hdr_signature; | |
114 | uint32_t hdr_version; | |
115 | uint32_t hdr_entries; | |
116 | }; | |
117 | ||
118 | #define INDEX_FORMAT_LB 2 | |
119 | #define INDEX_FORMAT_UB 4 | |
120 | ||
121 | /* | |
122 | * The "cache_time" is just the low 32 bits of the | |
123 | * time. It doesn't matter if it overflows - we only | |
124 | * check it for equality in the 32 bits we save. | |
125 | */ | |
126 | struct cache_time { | |
127 | uint32_t sec; | |
128 | uint32_t nsec; | |
129 | }; | |
130 | ||
131 | struct stat_data { | |
132 | struct cache_time sd_ctime; | |
133 | struct cache_time sd_mtime; | |
134 | unsigned int sd_dev; | |
135 | unsigned int sd_ino; | |
136 | unsigned int sd_uid; | |
137 | unsigned int sd_gid; | |
138 | unsigned int sd_size; | |
139 | }; | |
140 | ||
141 | struct cache_entry { | |
142 | struct hashmap_entry ent; | |
143 | struct stat_data ce_stat_data; | |
144 | unsigned int ce_mode; | |
145 | unsigned int ce_flags; | |
146 | unsigned int ce_namelen; | |
147 | unsigned int index; /* for link extension */ | |
148 | unsigned char sha1[20]; | |
149 | char name[FLEX_ARRAY]; /* more */ | |
150 | }; | |
151 | ||
152 | #define CE_STAGEMASK (0x3000) | |
153 | #define CE_EXTENDED (0x4000) | |
154 | #define CE_VALID (0x8000) | |
155 | #define CE_STAGESHIFT 12 | |
156 | ||
157 | /* | |
158 | * Range 0xFFFF0FFF in ce_flags is divided into | |
159 | * two parts: in-memory flags and on-disk ones. | |
160 | * Flags in CE_EXTENDED_FLAGS will get saved on-disk | |
161 | * if you want to save a new flag, add it in | |
162 | * CE_EXTENDED_FLAGS | |
163 | * | |
164 | * In-memory only flags | |
165 | */ | |
166 | #define CE_UPDATE (1 << 16) | |
167 | #define CE_REMOVE (1 << 17) | |
168 | #define CE_UPTODATE (1 << 18) | |
169 | #define CE_ADDED (1 << 19) | |
170 | ||
171 | #define CE_HASHED (1 << 20) | |
172 | #define CE_WT_REMOVE (1 << 22) /* remove in work directory */ | |
173 | #define CE_CONFLICTED (1 << 23) | |
174 | ||
175 | #define CE_UNPACKED (1 << 24) | |
176 | #define CE_NEW_SKIP_WORKTREE (1 << 25) | |
177 | ||
178 | /* used to temporarily mark paths matched by pathspecs */ | |
179 | #define CE_MATCHED (1 << 26) | |
180 | ||
181 | #define CE_UPDATE_IN_BASE (1 << 27) | |
182 | #define CE_STRIP_NAME (1 << 28) | |
183 | ||
184 | /* | |
185 | * Extended on-disk flags | |
186 | */ | |
187 | #define CE_INTENT_TO_ADD (1 << 29) | |
188 | #define CE_SKIP_WORKTREE (1 << 30) | |
189 | /* CE_EXTENDED2 is for future extension */ | |
190 | #define CE_EXTENDED2 (1 << 31) | |
191 | ||
192 | #define CE_EXTENDED_FLAGS (CE_INTENT_TO_ADD | CE_SKIP_WORKTREE) | |
193 | ||
194 | /* | |
195 | * Safeguard to avoid saving wrong flags: | |
196 | * - CE_EXTENDED2 won't get saved until its semantic is known | |
197 | * - Bits in 0x0000FFFF have been saved in ce_flags already | |
198 | * - Bits in 0x003F0000 are currently in-memory flags | |
199 | */ | |
200 | #if CE_EXTENDED_FLAGS & 0x803FFFFF | |
201 | #error "CE_EXTENDED_FLAGS out of range" | |
202 | #endif | |
203 | ||
204 | struct pathspec; | |
205 | ||
206 | /* | |
207 | * Copy the sha1 and stat state of a cache entry from one to | |
208 | * another. But we never change the name, or the hash state! | |
209 | */ | |
210 | static inline void copy_cache_entry(struct cache_entry *dst, | |
211 | const struct cache_entry *src) | |
212 | { | |
213 | unsigned int state = dst->ce_flags & CE_HASHED; | |
214 | ||
215 | /* Don't copy hash chain and name */ | |
216 | memcpy(&dst->ce_stat_data, &src->ce_stat_data, | |
217 | offsetof(struct cache_entry, name) - | |
218 | offsetof(struct cache_entry, ce_stat_data)); | |
219 | ||
220 | /* Restore the hash state */ | |
221 | dst->ce_flags = (dst->ce_flags & ~CE_HASHED) | state; | |
222 | } | |
223 | ||
224 | static inline unsigned create_ce_flags(unsigned stage) | |
225 | { | |
226 | return (stage << CE_STAGESHIFT); | |
227 | } | |
228 | ||
229 | #define ce_namelen(ce) ((ce)->ce_namelen) | |
230 | #define ce_size(ce) cache_entry_size(ce_namelen(ce)) | |
231 | #define ce_stage(ce) ((CE_STAGEMASK & (ce)->ce_flags) >> CE_STAGESHIFT) | |
232 | #define ce_uptodate(ce) ((ce)->ce_flags & CE_UPTODATE) | |
233 | #define ce_skip_worktree(ce) ((ce)->ce_flags & CE_SKIP_WORKTREE) | |
234 | #define ce_mark_uptodate(ce) ((ce)->ce_flags |= CE_UPTODATE) | |
235 | ||
236 | #define ce_permissions(mode) (((mode) & 0100) ? 0755 : 0644) | |
237 | static inline unsigned int create_ce_mode(unsigned int mode) | |
238 | { | |
239 | if (S_ISLNK(mode)) | |
240 | return S_IFLNK; | |
241 | if (S_ISDIR(mode) || S_ISGITLINK(mode)) | |
242 | return S_IFGITLINK; | |
243 | return S_IFREG | ce_permissions(mode); | |
244 | } | |
245 | static inline unsigned int ce_mode_from_stat(const struct cache_entry *ce, | |
246 | unsigned int mode) | |
247 | { | |
248 | extern int trust_executable_bit, has_symlinks; | |
249 | if (!has_symlinks && S_ISREG(mode) && | |
250 | ce && S_ISLNK(ce->ce_mode)) | |
251 | return ce->ce_mode; | |
252 | if (!trust_executable_bit && S_ISREG(mode)) { | |
253 | if (ce && S_ISREG(ce->ce_mode)) | |
254 | return ce->ce_mode; | |
255 | return create_ce_mode(0666); | |
256 | } | |
257 | return create_ce_mode(mode); | |
258 | } | |
259 | static inline int ce_to_dtype(const struct cache_entry *ce) | |
260 | { | |
261 | unsigned ce_mode = ntohl(ce->ce_mode); | |
262 | if (S_ISREG(ce_mode)) | |
263 | return DT_REG; | |
264 | else if (S_ISDIR(ce_mode) || S_ISGITLINK(ce_mode)) | |
265 | return DT_DIR; | |
266 | else if (S_ISLNK(ce_mode)) | |
267 | return DT_LNK; | |
268 | else | |
269 | return DT_UNKNOWN; | |
270 | } | |
271 | static inline unsigned int canon_mode(unsigned int mode) | |
272 | { | |
273 | if (S_ISREG(mode)) | |
274 | return S_IFREG | ce_permissions(mode); | |
275 | if (S_ISLNK(mode)) | |
276 | return S_IFLNK; | |
277 | if (S_ISDIR(mode)) | |
278 | return S_IFDIR; | |
279 | return S_IFGITLINK; | |
280 | } | |
281 | ||
282 | #define cache_entry_size(len) (offsetof(struct cache_entry,name) + (len) + 1) | |
283 | ||
284 | #define SOMETHING_CHANGED (1 << 0) /* unclassified changes go here */ | |
285 | #define CE_ENTRY_CHANGED (1 << 1) | |
286 | #define CE_ENTRY_REMOVED (1 << 2) | |
287 | #define CE_ENTRY_ADDED (1 << 3) | |
288 | #define RESOLVE_UNDO_CHANGED (1 << 4) | |
289 | #define CACHE_TREE_CHANGED (1 << 5) | |
290 | #define SPLIT_INDEX_ORDERED (1 << 6) | |
291 | ||
292 | struct split_index; | |
293 | struct index_state { | |
294 | struct cache_entry **cache; | |
295 | unsigned int version; | |
296 | unsigned int cache_nr, cache_alloc, cache_changed; | |
297 | struct string_list *resolve_undo; | |
298 | struct cache_tree *cache_tree; | |
299 | struct split_index *split_index; | |
300 | struct cache_time timestamp; | |
301 | unsigned name_hash_initialized : 1, | |
302 | initialized : 1; | |
303 | struct hashmap name_hash; | |
304 | struct hashmap dir_hash; | |
305 | unsigned char sha1[20]; | |
306 | }; | |
307 | ||
308 | extern struct index_state the_index; | |
309 | ||
310 | /* Name hashing */ | |
311 | extern void add_name_hash(struct index_state *istate, struct cache_entry *ce); | |
312 | extern void remove_name_hash(struct index_state *istate, struct cache_entry *ce); | |
313 | extern void free_name_hash(struct index_state *istate); | |
314 | ||
315 | ||
316 | #ifndef NO_THE_INDEX_COMPATIBILITY_MACROS | |
317 | #define active_cache (the_index.cache) | |
318 | #define active_nr (the_index.cache_nr) | |
319 | #define active_alloc (the_index.cache_alloc) | |
320 | #define active_cache_changed (the_index.cache_changed) | |
321 | #define active_cache_tree (the_index.cache_tree) | |
322 | ||
323 | #define read_cache() read_index(&the_index) | |
324 | #define read_cache_from(path) read_index_from(&the_index, (path)) | |
325 | #define read_cache_preload(pathspec) read_index_preload(&the_index, (pathspec)) | |
326 | #define is_cache_unborn() is_index_unborn(&the_index) | |
327 | #define read_cache_unmerged() read_index_unmerged(&the_index) | |
328 | #define discard_cache() discard_index(&the_index) | |
329 | #define unmerged_cache() unmerged_index(&the_index) | |
330 | #define cache_name_pos(name, namelen) index_name_pos(&the_index,(name),(namelen)) | |
331 | #define add_cache_entry(ce, option) add_index_entry(&the_index, (ce), (option)) | |
332 | #define rename_cache_entry_at(pos, new_name) rename_index_entry_at(&the_index, (pos), (new_name)) | |
333 | #define remove_cache_entry_at(pos) remove_index_entry_at(&the_index, (pos)) | |
334 | #define remove_file_from_cache(path) remove_file_from_index(&the_index, (path)) | |
335 | #define add_to_cache(path, st, flags) add_to_index(&the_index, (path), (st), (flags)) | |
336 | #define add_file_to_cache(path, flags) add_file_to_index(&the_index, (path), (flags)) | |
337 | #define refresh_cache(flags) refresh_index(&the_index, (flags), NULL, NULL, NULL) | |
338 | #define ce_match_stat(ce, st, options) ie_match_stat(&the_index, (ce), (st), (options)) | |
339 | #define ce_modified(ce, st, options) ie_modified(&the_index, (ce), (st), (options)) | |
340 | #define cache_dir_exists(name, namelen) index_dir_exists(&the_index, (name), (namelen)) | |
341 | #define cache_file_exists(name, namelen, igncase) index_file_exists(&the_index, (name), (namelen), (igncase)) | |
342 | #define cache_name_is_other(name, namelen) index_name_is_other(&the_index, (name), (namelen)) | |
343 | #define resolve_undo_clear() resolve_undo_clear_index(&the_index) | |
344 | #define unmerge_cache_entry_at(at) unmerge_index_entry_at(&the_index, at) | |
345 | #define unmerge_cache(pathspec) unmerge_index(&the_index, pathspec) | |
346 | #define read_blob_data_from_cache(path, sz) read_blob_data_from_index(&the_index, (path), (sz)) | |
347 | #endif | |
348 | ||
349 | enum object_type { | |
350 | OBJ_BAD = -1, | |
351 | OBJ_NONE = 0, | |
352 | OBJ_COMMIT = 1, | |
353 | OBJ_TREE = 2, | |
354 | OBJ_BLOB = 3, | |
355 | OBJ_TAG = 4, | |
356 | /* 5 for future expansion */ | |
357 | OBJ_OFS_DELTA = 6, | |
358 | OBJ_REF_DELTA = 7, | |
359 | OBJ_ANY, | |
360 | OBJ_MAX | |
361 | }; | |
362 | ||
363 | static inline enum object_type object_type(unsigned int mode) | |
364 | { | |
365 | return S_ISDIR(mode) ? OBJ_TREE : | |
366 | S_ISGITLINK(mode) ? OBJ_COMMIT : | |
367 | OBJ_BLOB; | |
368 | } | |
369 | ||
370 | /* Double-check local_repo_env below if you add to this list. */ | |
371 | #define GIT_DIR_ENVIRONMENT "GIT_DIR" | |
372 | #define GIT_NAMESPACE_ENVIRONMENT "GIT_NAMESPACE" | |
373 | #define GIT_WORK_TREE_ENVIRONMENT "GIT_WORK_TREE" | |
374 | #define GIT_PREFIX_ENVIRONMENT "GIT_PREFIX" | |
375 | #define DEFAULT_GIT_DIR_ENVIRONMENT ".git" | |
376 | #define DB_ENVIRONMENT "GIT_OBJECT_DIRECTORY" | |
377 | #define INDEX_ENVIRONMENT "GIT_INDEX_FILE" | |
378 | #define GRAFT_ENVIRONMENT "GIT_GRAFT_FILE" | |
379 | #define GIT_SHALLOW_FILE_ENVIRONMENT "GIT_SHALLOW_FILE" | |
380 | #define TEMPLATE_DIR_ENVIRONMENT "GIT_TEMPLATE_DIR" | |
381 | #define CONFIG_ENVIRONMENT "GIT_CONFIG" | |
382 | #define CONFIG_DATA_ENVIRONMENT "GIT_CONFIG_PARAMETERS" | |
383 | #define EXEC_PATH_ENVIRONMENT "GIT_EXEC_PATH" | |
384 | #define CEILING_DIRECTORIES_ENVIRONMENT "GIT_CEILING_DIRECTORIES" | |
385 | #define NO_REPLACE_OBJECTS_ENVIRONMENT "GIT_NO_REPLACE_OBJECTS" | |
386 | #define GITATTRIBUTES_FILE ".gitattributes" | |
387 | #define INFOATTRIBUTES_FILE "info/attributes" | |
388 | #define ATTRIBUTE_MACRO_PREFIX "[attr]" | |
389 | #define GIT_NOTES_REF_ENVIRONMENT "GIT_NOTES_REF" | |
390 | #define GIT_NOTES_DEFAULT_REF "refs/notes/commits" | |
391 | #define GIT_NOTES_DISPLAY_REF_ENVIRONMENT "GIT_NOTES_DISPLAY_REF" | |
392 | #define GIT_NOTES_REWRITE_REF_ENVIRONMENT "GIT_NOTES_REWRITE_REF" | |
393 | #define GIT_NOTES_REWRITE_MODE_ENVIRONMENT "GIT_NOTES_REWRITE_MODE" | |
394 | #define GIT_LITERAL_PATHSPECS_ENVIRONMENT "GIT_LITERAL_PATHSPECS" | |
395 | #define GIT_GLOB_PATHSPECS_ENVIRONMENT "GIT_GLOB_PATHSPECS" | |
396 | #define GIT_NOGLOB_PATHSPECS_ENVIRONMENT "GIT_NOGLOB_PATHSPECS" | |
397 | #define GIT_ICASE_PATHSPECS_ENVIRONMENT "GIT_ICASE_PATHSPECS" | |
398 | ||
399 | /* | |
400 | * This environment variable is expected to contain a boolean indicating | |
401 | * whether we should or should not treat: | |
402 | * | |
403 | * GIT_DIR=foo.git git ... | |
404 | * | |
405 | * as if GIT_WORK_TREE=. was given. It's not expected that users will make use | |
406 | * of this, but we use it internally to communicate to sub-processes that we | |
407 | * are in a bare repo. If not set, defaults to true. | |
408 | */ | |
409 | #define GIT_IMPLICIT_WORK_TREE_ENVIRONMENT "GIT_IMPLICIT_WORK_TREE" | |
410 | ||
411 | /* | |
412 | * Repository-local GIT_* environment variables; these will be cleared | |
413 | * when git spawns a sub-process that runs inside another repository. | |
414 | * The array is NULL-terminated, which makes it easy to pass in the "env" | |
415 | * parameter of a run-command invocation, or to do a simple walk. | |
416 | */ | |
417 | extern const char * const local_repo_env[]; | |
418 | ||
419 | extern int is_bare_repository_cfg; | |
420 | extern int is_bare_repository(void); | |
421 | extern int is_inside_git_dir(void); | |
422 | extern char *git_work_tree_cfg; | |
423 | extern int is_inside_work_tree(void); | |
424 | extern const char *get_git_dir(void); | |
425 | extern int is_git_directory(const char *path); | |
426 | extern char *get_object_directory(void); | |
427 | extern char *get_index_file(void); | |
428 | extern char *get_graft_file(void); | |
429 | extern int set_git_dir(const char *path); | |
430 | extern const char *get_git_namespace(void); | |
431 | extern const char *strip_namespace(const char *namespaced_ref); | |
432 | extern const char *get_git_work_tree(void); | |
433 | extern const char *read_gitfile(const char *path); | |
434 | extern const char *resolve_gitdir(const char *suspect); | |
435 | extern void set_git_work_tree(const char *tree); | |
436 | ||
437 | #define ALTERNATE_DB_ENVIRONMENT "GIT_ALTERNATE_OBJECT_DIRECTORIES" | |
438 | ||
439 | extern const char **get_pathspec(const char *prefix, const char **pathspec); | |
440 | extern void setup_work_tree(void); | |
441 | extern const char *setup_git_directory_gently(int *); | |
442 | extern const char *setup_git_directory(void); | |
443 | extern char *prefix_path(const char *prefix, int len, const char *path); | |
444 | extern char *prefix_path_gently(const char *prefix, int len, int *remaining, const char *path); | |
445 | extern const char *prefix_filename(const char *prefix, int len, const char *path); | |
446 | extern int check_filename(const char *prefix, const char *name); | |
447 | extern void verify_filename(const char *prefix, | |
448 | const char *name, | |
449 | int diagnose_misspelt_rev); | |
450 | extern void verify_non_filename(const char *prefix, const char *name); | |
451 | extern int path_inside_repo(const char *prefix, const char *path); | |
452 | ||
453 | #define INIT_DB_QUIET 0x0001 | |
454 | ||
455 | extern int set_git_dir_init(const char *git_dir, const char *real_git_dir, int); | |
456 | extern int init_db(const char *template_dir, unsigned int flags); | |
457 | ||
458 | extern void sanitize_stdfds(void); | |
459 | extern int daemonize(void); | |
460 | ||
461 | #define alloc_nr(x) (((x)+16)*3/2) | |
462 | ||
463 | /* | |
464 | * Realloc the buffer pointed at by variable 'x' so that it can hold | |
465 | * at least 'nr' entries; the number of entries currently allocated | |
466 | * is 'alloc', using the standard growing factor alloc_nr() macro. | |
467 | * | |
468 | * DO NOT USE any expression with side-effect for 'x', 'nr', or 'alloc'. | |
469 | */ | |
470 | #define ALLOC_GROW(x, nr, alloc) \ | |
471 | do { \ | |
472 | if ((nr) > alloc) { \ | |
473 | if (alloc_nr(alloc) < (nr)) \ | |
474 | alloc = (nr); \ | |
475 | else \ | |
476 | alloc = alloc_nr(alloc); \ | |
477 | x = xrealloc((x), alloc * sizeof(*(x))); \ | |
478 | } \ | |
479 | } while (0) | |
480 | ||
481 | /* Initialize and use the cache information */ | |
482 | struct lock_file; | |
483 | extern int read_index(struct index_state *); | |
484 | extern int read_index_preload(struct index_state *, const struct pathspec *pathspec); | |
485 | extern int do_read_index(struct index_state *istate, const char *path, | |
486 | int must_exist); /* for testting only! */ | |
487 | extern int read_index_from(struct index_state *, const char *path); | |
488 | extern int is_index_unborn(struct index_state *); | |
489 | extern int read_index_unmerged(struct index_state *); | |
490 | #define COMMIT_LOCK (1 << 0) | |
491 | #define CLOSE_LOCK (1 << 1) | |
492 | extern int write_locked_index(struct index_state *, struct lock_file *lock, unsigned flags); | |
493 | extern int discard_index(struct index_state *); | |
494 | extern int unmerged_index(const struct index_state *); | |
495 | extern int verify_path(const char *path); | |
496 | extern struct cache_entry *index_dir_exists(struct index_state *istate, const char *name, int namelen); | |
497 | extern struct cache_entry *index_file_exists(struct index_state *istate, const char *name, int namelen, int igncase); | |
498 | extern int index_name_pos(const struct index_state *, const char *name, int namelen); | |
499 | #define ADD_CACHE_OK_TO_ADD 1 /* Ok to add */ | |
500 | #define ADD_CACHE_OK_TO_REPLACE 2 /* Ok to replace file/directory */ | |
501 | #define ADD_CACHE_SKIP_DFCHECK 4 /* Ok to skip DF conflict checks */ | |
502 | #define ADD_CACHE_JUST_APPEND 8 /* Append only; tree.c::read_tree() */ | |
503 | #define ADD_CACHE_NEW_ONLY 16 /* Do not replace existing ones */ | |
504 | #define ADD_CACHE_KEEP_CACHE_TREE 32 /* Do not invalidate cache-tree */ | |
505 | extern int add_index_entry(struct index_state *, struct cache_entry *ce, int option); | |
506 | extern void rename_index_entry_at(struct index_state *, int pos, const char *new_name); | |
507 | extern int remove_index_entry_at(struct index_state *, int pos); | |
508 | extern void remove_marked_cache_entries(struct index_state *istate); | |
509 | extern int remove_file_from_index(struct index_state *, const char *path); | |
510 | #define ADD_CACHE_VERBOSE 1 | |
511 | #define ADD_CACHE_PRETEND 2 | |
512 | #define ADD_CACHE_IGNORE_ERRORS 4 | |
513 | #define ADD_CACHE_IGNORE_REMOVAL 8 | |
514 | #define ADD_CACHE_INTENT 16 | |
515 | extern int add_to_index(struct index_state *, const char *path, struct stat *, int flags); | |
516 | extern int add_file_to_index(struct index_state *, const char *path, int flags); | |
517 | extern struct cache_entry *make_cache_entry(unsigned int mode, const unsigned char *sha1, const char *path, int stage, unsigned int refresh_options); | |
518 | extern int ce_same_name(const struct cache_entry *a, const struct cache_entry *b); | |
519 | extern void set_object_name_for_intent_to_add_entry(struct cache_entry *ce); | |
520 | extern int index_name_is_other(const struct index_state *, const char *, int); | |
521 | extern void *read_blob_data_from_index(struct index_state *, const char *, unsigned long *); | |
522 | ||
523 | /* do stat comparison even if CE_VALID is true */ | |
524 | #define CE_MATCH_IGNORE_VALID 01 | |
525 | /* do not check the contents but report dirty on racily-clean entries */ | |
526 | #define CE_MATCH_RACY_IS_DIRTY 02 | |
527 | /* do stat comparison even if CE_SKIP_WORKTREE is true */ | |
528 | #define CE_MATCH_IGNORE_SKIP_WORKTREE 04 | |
529 | /* ignore non-existent files during stat update */ | |
530 | #define CE_MATCH_IGNORE_MISSING 0x08 | |
531 | /* enable stat refresh */ | |
532 | #define CE_MATCH_REFRESH 0x10 | |
533 | extern int ie_match_stat(const struct index_state *, const struct cache_entry *, struct stat *, unsigned int); | |
534 | extern int ie_modified(const struct index_state *, const struct cache_entry *, struct stat *, unsigned int); | |
535 | ||
536 | #define HASH_WRITE_OBJECT 1 | |
537 | #define HASH_FORMAT_CHECK 2 | |
538 | extern int index_fd(unsigned char *sha1, int fd, struct stat *st, enum object_type type, const char *path, unsigned flags); | |
539 | extern int index_path(unsigned char *sha1, const char *path, struct stat *st, unsigned flags); | |
540 | ||
541 | /* | |
542 | * Record to sd the data from st that we use to check whether a file | |
543 | * might have changed. | |
544 | */ | |
545 | extern void fill_stat_data(struct stat_data *sd, struct stat *st); | |
546 | ||
547 | /* | |
548 | * Return 0 if st is consistent with a file not having been changed | |
549 | * since sd was filled. If there are differences, return a | |
550 | * combination of MTIME_CHANGED, CTIME_CHANGED, OWNER_CHANGED, | |
551 | * INODE_CHANGED, and DATA_CHANGED. | |
552 | */ | |
553 | extern int match_stat_data(const struct stat_data *sd, struct stat *st); | |
554 | ||
555 | extern void fill_stat_cache_info(struct cache_entry *ce, struct stat *st); | |
556 | ||
557 | #define REFRESH_REALLY 0x0001 /* ignore_valid */ | |
558 | #define REFRESH_UNMERGED 0x0002 /* allow unmerged */ | |
559 | #define REFRESH_QUIET 0x0004 /* be quiet about it */ | |
560 | #define REFRESH_IGNORE_MISSING 0x0008 /* ignore non-existent */ | |
561 | #define REFRESH_IGNORE_SUBMODULES 0x0010 /* ignore submodules */ | |
562 | #define REFRESH_IN_PORCELAIN 0x0020 /* user friendly output, not "needs update" */ | |
563 | extern int refresh_index(struct index_state *, unsigned int flags, const struct pathspec *pathspec, char *seen, const char *header_msg); | |
564 | ||
565 | struct lock_file { | |
566 | struct lock_file *next; | |
567 | int fd; | |
568 | pid_t owner; | |
569 | char on_list; | |
570 | char filename[PATH_MAX]; | |
571 | }; | |
572 | #define LOCK_DIE_ON_ERROR 1 | |
573 | #define LOCK_NODEREF 2 | |
574 | extern int unable_to_lock_error(const char *path, int err); | |
575 | extern void unable_to_lock_message(const char *path, int err, | |
576 | struct strbuf *buf); | |
577 | extern NORETURN void unable_to_lock_index_die(const char *path, int err); | |
578 | extern int hold_lock_file_for_update(struct lock_file *, const char *path, int); | |
579 | extern int hold_lock_file_for_append(struct lock_file *, const char *path, int); | |
580 | extern int commit_lock_file(struct lock_file *); | |
581 | extern void update_index_if_able(struct index_state *, struct lock_file *); | |
582 | ||
583 | extern int hold_locked_index(struct lock_file *, int); | |
584 | extern void set_alternate_index_output(const char *); | |
585 | extern int close_lock_file(struct lock_file *); | |
586 | extern void rollback_lock_file(struct lock_file *); | |
587 | extern int delete_ref(const char *, const unsigned char *sha1, int delopt); | |
588 | ||
589 | /* Environment bits from configuration mechanism */ | |
590 | extern int trust_executable_bit; | |
591 | extern int trust_ctime; | |
592 | extern int check_stat; | |
593 | extern int quote_path_fully; | |
594 | extern int has_symlinks; | |
595 | extern int minimum_abbrev, default_abbrev; | |
596 | extern int ignore_case; | |
597 | extern int assume_unchanged; | |
598 | extern int prefer_symlink_refs; | |
599 | extern int log_all_ref_updates; | |
600 | extern int warn_ambiguous_refs; | |
601 | extern int warn_on_object_refname_ambiguity; | |
602 | extern int shared_repository; | |
603 | extern const char *apply_default_whitespace; | |
604 | extern const char *apply_default_ignorewhitespace; | |
605 | extern const char *git_attributes_file; | |
606 | extern int zlib_compression_level; | |
607 | extern int core_compression_level; | |
608 | extern int core_compression_seen; | |
609 | extern size_t packed_git_window_size; | |
610 | extern size_t packed_git_limit; | |
611 | extern size_t delta_base_cache_limit; | |
612 | extern unsigned long big_file_threshold; | |
613 | extern unsigned long pack_size_limit_cfg; | |
614 | ||
615 | /* | |
616 | * Do replace refs need to be checked this run? This variable is | |
617 | * initialized to true unless --no-replace-object is used or | |
618 | * $GIT_NO_REPLACE_OBJECTS is set, but is set to false by some | |
619 | * commands that do not want replace references to be active. As an | |
620 | * optimization it is also set to false if replace references have | |
621 | * been sought but there were none. | |
622 | */ | |
623 | extern int check_replace_refs; | |
624 | ||
625 | extern int fsync_object_files; | |
626 | extern int core_preload_index; | |
627 | extern int core_apply_sparse_checkout; | |
628 | extern int precomposed_unicode; | |
629 | ||
630 | /* | |
631 | * The character that begins a commented line in user-editable file | |
632 | * that is subject to stripspace. | |
633 | */ | |
634 | extern char comment_line_char; | |
635 | extern int auto_comment_line_char; | |
636 | ||
637 | enum branch_track { | |
638 | BRANCH_TRACK_UNSPECIFIED = -1, | |
639 | BRANCH_TRACK_NEVER = 0, | |
640 | BRANCH_TRACK_REMOTE, | |
641 | BRANCH_TRACK_ALWAYS, | |
642 | BRANCH_TRACK_EXPLICIT, | |
643 | BRANCH_TRACK_OVERRIDE | |
644 | }; | |
645 | ||
646 | enum rebase_setup_type { | |
647 | AUTOREBASE_NEVER = 0, | |
648 | AUTOREBASE_LOCAL, | |
649 | AUTOREBASE_REMOTE, | |
650 | AUTOREBASE_ALWAYS | |
651 | }; | |
652 | ||
653 | enum push_default_type { | |
654 | PUSH_DEFAULT_NOTHING = 0, | |
655 | PUSH_DEFAULT_MATCHING, | |
656 | PUSH_DEFAULT_SIMPLE, | |
657 | PUSH_DEFAULT_UPSTREAM, | |
658 | PUSH_DEFAULT_CURRENT, | |
659 | PUSH_DEFAULT_UNSPECIFIED | |
660 | }; | |
661 | ||
662 | extern enum branch_track git_branch_track; | |
663 | extern enum rebase_setup_type autorebase; | |
664 | extern enum push_default_type push_default; | |
665 | ||
666 | enum object_creation_mode { | |
667 | OBJECT_CREATION_USES_HARDLINKS = 0, | |
668 | OBJECT_CREATION_USES_RENAMES = 1 | |
669 | }; | |
670 | ||
671 | extern enum object_creation_mode object_creation_mode; | |
672 | ||
673 | extern char *notes_ref_name; | |
674 | ||
675 | extern int grafts_replace_parents; | |
676 | ||
677 | #define GIT_REPO_VERSION 0 | |
678 | extern int repository_format_version; | |
679 | extern int check_repository_format(void); | |
680 | ||
681 | #define MTIME_CHANGED 0x0001 | |
682 | #define CTIME_CHANGED 0x0002 | |
683 | #define OWNER_CHANGED 0x0004 | |
684 | #define MODE_CHANGED 0x0008 | |
685 | #define INODE_CHANGED 0x0010 | |
686 | #define DATA_CHANGED 0x0020 | |
687 | #define TYPE_CHANGED 0x0040 | |
688 | ||
689 | extern char *mksnpath(char *buf, size_t n, const char *fmt, ...) | |
690 | __attribute__((format (printf, 3, 4))); | |
691 | extern char *git_snpath(char *buf, size_t n, const char *fmt, ...) | |
692 | __attribute__((format (printf, 3, 4))); | |
693 | extern char *git_pathdup(const char *fmt, ...) | |
694 | __attribute__((format (printf, 1, 2))); | |
695 | extern char *mkpathdup(const char *fmt, ...) | |
696 | __attribute__((format (printf, 1, 2))); | |
697 | ||
698 | /* Return a statically allocated filename matching the sha1 signature */ | |
699 | extern char *mkpath(const char *fmt, ...) __attribute__((format (printf, 1, 2))); | |
700 | extern char *git_path(const char *fmt, ...) __attribute__((format (printf, 1, 2))); | |
701 | extern char *git_path_submodule(const char *path, const char *fmt, ...) | |
702 | __attribute__((format (printf, 2, 3))); | |
703 | ||
704 | /* | |
705 | * Return the name of the file in the local object database that would | |
706 | * be used to store a loose object with the specified sha1. The | |
707 | * return value is a pointer to a statically allocated buffer that is | |
708 | * overwritten each time the function is called. | |
709 | */ | |
710 | extern const char *sha1_file_name(const unsigned char *sha1); | |
711 | ||
712 | /* | |
713 | * Return the name of the (local) packfile with the specified sha1 in | |
714 | * its name. The return value is a pointer to memory that is | |
715 | * overwritten each time this function is called. | |
716 | */ | |
717 | extern char *sha1_pack_name(const unsigned char *sha1); | |
718 | ||
719 | /* | |
720 | * Return the name of the (local) pack index file with the specified | |
721 | * sha1 in its name. The return value is a pointer to memory that is | |
722 | * overwritten each time this function is called. | |
723 | */ | |
724 | extern char *sha1_pack_index_name(const unsigned char *sha1); | |
725 | ||
726 | extern const char *find_unique_abbrev(const unsigned char *sha1, int); | |
727 | extern const unsigned char null_sha1[20]; | |
728 | ||
729 | static inline int hashcmp(const unsigned char *sha1, const unsigned char *sha2) | |
730 | { | |
731 | int i; | |
732 | ||
733 | for (i = 0; i < 20; i++, sha1++, sha2++) { | |
734 | if (*sha1 != *sha2) | |
735 | return *sha1 - *sha2; | |
736 | } | |
737 | ||
738 | return 0; | |
739 | } | |
740 | ||
741 | static inline int is_null_sha1(const unsigned char *sha1) | |
742 | { | |
743 | return !hashcmp(sha1, null_sha1); | |
744 | } | |
745 | ||
746 | static inline void hashcpy(unsigned char *sha_dst, const unsigned char *sha_src) | |
747 | { | |
748 | memcpy(sha_dst, sha_src, 20); | |
749 | } | |
750 | static inline void hashclr(unsigned char *hash) | |
751 | { | |
752 | memset(hash, 0, 20); | |
753 | } | |
754 | ||
755 | #define EMPTY_TREE_SHA1_HEX \ | |
756 | "4b825dc642cb6eb9a060e54bf8d69288fbee4904" | |
757 | #define EMPTY_TREE_SHA1_BIN_LITERAL \ | |
758 | "\x4b\x82\x5d\xc6\x42\xcb\x6e\xb9\xa0\x60" \ | |
759 | "\xe5\x4b\xf8\xd6\x92\x88\xfb\xee\x49\x04" | |
760 | #define EMPTY_TREE_SHA1_BIN \ | |
761 | ((const unsigned char *) EMPTY_TREE_SHA1_BIN_LITERAL) | |
762 | ||
763 | #define EMPTY_BLOB_SHA1_HEX \ | |
764 | "e69de29bb2d1d6434b8b29ae775ad8c2e48c5391" | |
765 | #define EMPTY_BLOB_SHA1_BIN_LITERAL \ | |
766 | "\xe6\x9d\xe2\x9b\xb2\xd1\xd6\x43\x4b\x8b" \ | |
767 | "\x29\xae\x77\x5a\xd8\xc2\xe4\x8c\x53\x91" | |
768 | #define EMPTY_BLOB_SHA1_BIN \ | |
769 | ((const unsigned char *) EMPTY_BLOB_SHA1_BIN_LITERAL) | |
770 | ||
771 | static inline int is_empty_blob_sha1(const unsigned char *sha1) | |
772 | { | |
773 | return !hashcmp(sha1, EMPTY_BLOB_SHA1_BIN); | |
774 | } | |
775 | ||
776 | int git_mkstemp(char *path, size_t n, const char *template); | |
777 | ||
778 | int git_mkstemps(char *path, size_t n, const char *template, int suffix_len); | |
779 | ||
780 | /* set default permissions by passing mode arguments to open(2) */ | |
781 | int git_mkstemps_mode(char *pattern, int suffix_len, int mode); | |
782 | int git_mkstemp_mode(char *pattern, int mode); | |
783 | ||
784 | /* | |
785 | * NOTE NOTE NOTE!! | |
786 | * | |
787 | * PERM_UMASK, OLD_PERM_GROUP and OLD_PERM_EVERYBODY enumerations must | |
788 | * not be changed. Old repositories have core.sharedrepository written in | |
789 | * numeric format, and therefore these values are preserved for compatibility | |
790 | * reasons. | |
791 | */ | |
792 | enum sharedrepo { | |
793 | PERM_UMASK = 0, | |
794 | OLD_PERM_GROUP = 1, | |
795 | OLD_PERM_EVERYBODY = 2, | |
796 | PERM_GROUP = 0660, | |
797 | PERM_EVERYBODY = 0664 | |
798 | }; | |
799 | int git_config_perm(const char *var, const char *value); | |
800 | int adjust_shared_perm(const char *path); | |
801 | ||
802 | /* | |
803 | * Create the directory containing the named path, using care to be | |
804 | * somewhat safe against races. Return one of the scld_error values | |
805 | * to indicate success/failure. | |
806 | * | |
807 | * SCLD_VANISHED indicates that one of the ancestor directories of the | |
808 | * path existed at one point during the function call and then | |
809 | * suddenly vanished, probably because another process pruned the | |
810 | * directory while we were working. To be robust against this kind of | |
811 | * race, callers might want to try invoking the function again when it | |
812 | * returns SCLD_VANISHED. | |
813 | */ | |
814 | enum scld_error { | |
815 | SCLD_OK = 0, | |
816 | SCLD_FAILED = -1, | |
817 | SCLD_PERMS = -2, | |
818 | SCLD_EXISTS = -3, | |
819 | SCLD_VANISHED = -4 | |
820 | }; | |
821 | enum scld_error safe_create_leading_directories(char *path); | |
822 | enum scld_error safe_create_leading_directories_const(const char *path); | |
823 | ||
824 | int mkdir_in_gitdir(const char *path); | |
825 | extern void home_config_paths(char **global, char **xdg, char *file); | |
826 | extern char *expand_user_path(const char *path); | |
827 | const char *enter_repo(const char *path, int strict); | |
828 | static inline int is_absolute_path(const char *path) | |
829 | { | |
830 | return is_dir_sep(path[0]) || has_dos_drive_prefix(path); | |
831 | } | |
832 | int is_directory(const char *); | |
833 | const char *real_path(const char *path); | |
834 | const char *real_path_if_valid(const char *path); | |
835 | const char *absolute_path(const char *path); | |
836 | const char *remove_leading_path(const char *in, const char *prefix); | |
837 | const char *relative_path(const char *in, const char *prefix, struct strbuf *sb); | |
838 | int normalize_path_copy_len(char *dst, const char *src, int *prefix_len); | |
839 | int normalize_path_copy(char *dst, const char *src); | |
840 | int longest_ancestor_length(const char *path, struct string_list *prefixes); | |
841 | char *strip_path_suffix(const char *path, const char *suffix); | |
842 | int daemon_avoid_alias(const char *path); | |
843 | ||
844 | /* object replacement */ | |
845 | #define LOOKUP_REPLACE_OBJECT 1 | |
846 | extern void *read_sha1_file_extended(const unsigned char *sha1, enum object_type *type, unsigned long *size, unsigned flag); | |
847 | static inline void *read_sha1_file(const unsigned char *sha1, enum object_type *type, unsigned long *size) | |
848 | { | |
849 | return read_sha1_file_extended(sha1, type, size, LOOKUP_REPLACE_OBJECT); | |
850 | } | |
851 | ||
852 | /* | |
853 | * This internal function is only declared here for the benefit of | |
854 | * lookup_replace_object(). Please do not call it directly. | |
855 | */ | |
856 | extern const unsigned char *do_lookup_replace_object(const unsigned char *sha1); | |
857 | ||
858 | /* | |
859 | * If object sha1 should be replaced, return the replacement object's | |
860 | * name (replaced recursively, if necessary). The return value is | |
861 | * either sha1 or a pointer to a permanently-allocated value. When | |
862 | * object replacement is suppressed, always return sha1. | |
863 | */ | |
864 | static inline const unsigned char *lookup_replace_object(const unsigned char *sha1) | |
865 | { | |
866 | if (!check_replace_refs) | |
867 | return sha1; | |
868 | return do_lookup_replace_object(sha1); | |
869 | } | |
870 | ||
871 | static inline const unsigned char *lookup_replace_object_extended(const unsigned char *sha1, unsigned flag) | |
872 | { | |
873 | if (!(flag & LOOKUP_REPLACE_OBJECT)) | |
874 | return sha1; | |
875 | return lookup_replace_object(sha1); | |
876 | } | |
877 | ||
878 | /* Read and unpack a sha1 file into memory, write memory to a sha1 file */ | |
879 | extern int sha1_object_info(const unsigned char *, unsigned long *); | |
880 | extern int hash_sha1_file(const void *buf, unsigned long len, const char *type, unsigned char *sha1); | |
881 | extern int write_sha1_file(const void *buf, unsigned long len, const char *type, unsigned char *return_sha1); | |
882 | extern int pretend_sha1_file(void *, unsigned long, enum object_type, unsigned char *); | |
883 | extern int force_object_loose(const unsigned char *sha1, time_t mtime); | |
884 | extern int git_open_noatime(const char *name); | |
885 | extern void *map_sha1_file(const unsigned char *sha1, unsigned long *size); | |
886 | extern int unpack_sha1_header(git_zstream *stream, unsigned char *map, unsigned long mapsize, void *buffer, unsigned long bufsiz); | |
887 | extern int parse_sha1_header(const char *hdr, unsigned long *sizep); | |
888 | ||
889 | /* global flag to enable extra checks when accessing packed objects */ | |
890 | extern int do_check_packed_object_crc; | |
891 | ||
892 | extern int check_sha1_signature(const unsigned char *sha1, void *buf, unsigned long size, const char *type); | |
893 | ||
894 | extern int move_temp_to_file(const char *tmpfile, const char *filename); | |
895 | ||
896 | extern int has_sha1_pack(const unsigned char *sha1); | |
897 | ||
898 | /* | |
899 | * Return true iff we have an object named sha1, whether local or in | |
900 | * an alternate object database, and whether packed or loose. This | |
901 | * function does not respect replace references. | |
902 | */ | |
903 | extern int has_sha1_file(const unsigned char *sha1); | |
904 | ||
905 | /* | |
906 | * Return true iff an alternate object database has a loose object | |
907 | * with the specified name. This function does not respect replace | |
908 | * references. | |
909 | */ | |
910 | extern int has_loose_object_nonlocal(const unsigned char *sha1); | |
911 | ||
912 | extern int has_pack_index(const unsigned char *sha1); | |
913 | ||
914 | extern void assert_sha1_type(const unsigned char *sha1, enum object_type expect); | |
915 | ||
916 | extern const signed char hexval_table[256]; | |
917 | static inline unsigned int hexval(unsigned char c) | |
918 | { | |
919 | return hexval_table[c]; | |
920 | } | |
921 | ||
922 | /* Convert to/from hex/sha1 representation */ | |
923 | #define MINIMUM_ABBREV minimum_abbrev | |
924 | #define DEFAULT_ABBREV default_abbrev | |
925 | ||
926 | struct object_context { | |
927 | unsigned char tree[20]; | |
928 | char path[PATH_MAX]; | |
929 | unsigned mode; | |
930 | }; | |
931 | ||
932 | #define GET_SHA1_QUIETLY 01 | |
933 | #define GET_SHA1_COMMIT 02 | |
934 | #define GET_SHA1_COMMITTISH 04 | |
935 | #define GET_SHA1_TREE 010 | |
936 | #define GET_SHA1_TREEISH 020 | |
937 | #define GET_SHA1_BLOB 040 | |
938 | #define GET_SHA1_ONLY_TO_DIE 04000 | |
939 | ||
940 | extern int get_sha1(const char *str, unsigned char *sha1); | |
941 | extern int get_sha1_commit(const char *str, unsigned char *sha1); | |
942 | extern int get_sha1_committish(const char *str, unsigned char *sha1); | |
943 | extern int get_sha1_tree(const char *str, unsigned char *sha1); | |
944 | extern int get_sha1_treeish(const char *str, unsigned char *sha1); | |
945 | extern int get_sha1_blob(const char *str, unsigned char *sha1); | |
946 | extern void maybe_die_on_misspelt_object_name(const char *name, const char *prefix); | |
947 | extern int get_sha1_with_context(const char *str, unsigned flags, unsigned char *sha1, struct object_context *orc); | |
948 | ||
949 | typedef int each_abbrev_fn(const unsigned char *sha1, void *); | |
950 | extern int for_each_abbrev(const char *prefix, each_abbrev_fn, void *); | |
951 | ||
952 | /* | |
953 | * Try to read a SHA1 in hexadecimal format from the 40 characters | |
954 | * starting at hex. Write the 20-byte result to sha1 in binary form. | |
955 | * Return 0 on success. Reading stops if a NUL is encountered in the | |
956 | * input, so it is safe to pass this function an arbitrary | |
957 | * null-terminated string. | |
958 | */ | |
959 | extern int get_sha1_hex(const char *hex, unsigned char *sha1); | |
960 | ||
961 | extern char *sha1_to_hex(const unsigned char *sha1); /* static buffer result! */ | |
962 | extern int read_ref_full(const char *refname, unsigned char *sha1, | |
963 | int reading, int *flags); | |
964 | extern int read_ref(const char *refname, unsigned char *sha1); | |
965 | ||
966 | /* | |
967 | * Resolve a reference, recursively following symbolic refererences. | |
968 | * | |
969 | * Store the referred-to object's name in sha1 and return the name of | |
970 | * the non-symbolic reference that ultimately pointed at it. The | |
971 | * return value, if not NULL, is a pointer into either a static buffer | |
972 | * or the input ref. | |
973 | * | |
974 | * If the reference cannot be resolved to an object, the behavior | |
975 | * depends on the "reading" argument: | |
976 | * | |
977 | * - If reading is set, return NULL. | |
978 | * | |
979 | * - If reading is not set, clear sha1 and return the name of the last | |
980 | * reference name in the chain, which will either be a non-symbolic | |
981 | * reference or an undefined reference. If this is a prelude to | |
982 | * "writing" to the ref, the return value is the name of the ref | |
983 | * that will actually be created or changed. | |
984 | * | |
985 | * If flag is non-NULL, set the value that it points to the | |
986 | * combination of REF_ISPACKED (if the reference was found among the | |
987 | * packed references) and REF_ISSYMREF (if the initial reference was a | |
988 | * symbolic reference). | |
989 | * | |
990 | * If ref is not a properly-formatted, normalized reference, return | |
991 | * NULL. If more than MAXDEPTH recursive symbolic lookups are needed, | |
992 | * give up and return NULL. | |
993 | * | |
994 | * errno is set to something meaningful on error. | |
995 | */ | |
996 | extern const char *resolve_ref_unsafe(const char *ref, unsigned char *sha1, int reading, int *flag); | |
997 | extern char *resolve_refdup(const char *ref, unsigned char *sha1, int reading, int *flag); | |
998 | ||
999 | extern int dwim_ref(const char *str, int len, unsigned char *sha1, char **ref); | |
1000 | extern int dwim_log(const char *str, int len, unsigned char *sha1, char **ref); | |
1001 | extern int interpret_branch_name(const char *str, int len, struct strbuf *); | |
1002 | extern int get_sha1_mb(const char *str, unsigned char *sha1); | |
1003 | ||
1004 | /* | |
1005 | * Return true iff abbrev_name is a possible abbreviation for | |
1006 | * full_name according to the rules defined by ref_rev_parse_rules in | |
1007 | * refs.c. | |
1008 | */ | |
1009 | extern int refname_match(const char *abbrev_name, const char *full_name); | |
1010 | ||
1011 | extern int create_symref(const char *ref, const char *refs_heads_master, const char *logmsg); | |
1012 | extern int validate_headref(const char *ref); | |
1013 | ||
1014 | extern int base_name_compare(const char *name1, int len1, int mode1, const char *name2, int len2, int mode2); | |
1015 | extern int df_name_compare(const char *name1, int len1, int mode1, const char *name2, int len2, int mode2); | |
1016 | extern int name_compare(const char *name1, size_t len1, const char *name2, size_t len2); | |
1017 | extern int cache_name_stage_compare(const char *name1, int len1, int stage1, const char *name2, int len2, int stage2); | |
1018 | ||
1019 | extern void *read_object_with_reference(const unsigned char *sha1, | |
1020 | const char *required_type, | |
1021 | unsigned long *size, | |
1022 | unsigned char *sha1_ret); | |
1023 | ||
1024 | extern struct object *peel_to_type(const char *name, int namelen, | |
1025 | struct object *o, enum object_type); | |
1026 | ||
1027 | enum date_mode { | |
1028 | DATE_NORMAL = 0, | |
1029 | DATE_RELATIVE, | |
1030 | DATE_SHORT, | |
1031 | DATE_LOCAL, | |
1032 | DATE_ISO8601, | |
1033 | DATE_RFC2822, | |
1034 | DATE_RAW | |
1035 | }; | |
1036 | ||
1037 | const char *show_date(unsigned long time, int timezone, enum date_mode mode); | |
1038 | void show_date_relative(unsigned long time, int tz, const struct timeval *now, | |
1039 | struct strbuf *timebuf); | |
1040 | int parse_date(const char *date, char *buf, int bufsize); | |
1041 | int parse_date_basic(const char *date, unsigned long *timestamp, int *offset); | |
1042 | int parse_expiry_date(const char *date, unsigned long *timestamp); | |
1043 | void datestamp(char *buf, int bufsize); | |
1044 | #define approxidate(s) approxidate_careful((s), NULL) | |
1045 | unsigned long approxidate_careful(const char *, int *); | |
1046 | unsigned long approxidate_relative(const char *date, const struct timeval *now); | |
1047 | enum date_mode parse_date_format(const char *format); | |
1048 | int date_overflows(unsigned long date); | |
1049 | ||
1050 | #define IDENT_STRICT 1 | |
1051 | #define IDENT_NO_DATE 2 | |
1052 | #define IDENT_NO_NAME 4 | |
1053 | extern const char *git_author_info(int); | |
1054 | extern const char *git_committer_info(int); | |
1055 | extern const char *fmt_ident(const char *name, const char *email, const char *date_str, int); | |
1056 | extern const char *fmt_name(const char *name, const char *email); | |
1057 | extern const char *ident_default_email(void); | |
1058 | extern const char *git_editor(void); | |
1059 | extern const char *git_pager(int stdout_is_tty); | |
1060 | extern int git_ident_config(const char *, const char *, void *); | |
1061 | ||
1062 | struct ident_split { | |
1063 | const char *name_begin; | |
1064 | const char *name_end; | |
1065 | const char *mail_begin; | |
1066 | const char *mail_end; | |
1067 | const char *date_begin; | |
1068 | const char *date_end; | |
1069 | const char *tz_begin; | |
1070 | const char *tz_end; | |
1071 | }; | |
1072 | /* | |
1073 | * Signals an success with 0, but time part of the result may be NULL | |
1074 | * if the input lacks timestamp and zone | |
1075 | */ | |
1076 | extern int split_ident_line(struct ident_split *, const char *, int); | |
1077 | ||
1078 | /* | |
1079 | * Like show_date, but pull the timestamp and tz parameters from | |
1080 | * the ident_split. It will also sanity-check the values and produce | |
1081 | * a well-known sentinel date if they appear bogus. | |
1082 | */ | |
1083 | const char *show_ident_date(const struct ident_split *id, enum date_mode mode); | |
1084 | ||
1085 | /* | |
1086 | * Compare split idents for equality or strict ordering. Note that we | |
1087 | * compare only the ident part of the line, ignoring any timestamp. | |
1088 | * | |
1089 | * Because there are two fields, we must choose one as the primary key; we | |
1090 | * currently arbitrarily pick the email. | |
1091 | */ | |
1092 | extern int ident_cmp(const struct ident_split *, const struct ident_split *); | |
1093 | ||
1094 | struct checkout { | |
1095 | struct index_state *istate; | |
1096 | const char *base_dir; | |
1097 | int base_dir_len; | |
1098 | unsigned force:1, | |
1099 | quiet:1, | |
1100 | not_new:1, | |
1101 | refresh_cache:1; | |
1102 | }; | |
1103 | ||
1104 | #define TEMPORARY_FILENAME_LENGTH 25 | |
1105 | extern int checkout_entry(struct cache_entry *ce, const struct checkout *state, char *topath); | |
1106 | ||
1107 | struct cache_def { | |
1108 | struct strbuf path; | |
1109 | int flags; | |
1110 | int track_flags; | |
1111 | int prefix_len_stat_func; | |
1112 | }; | |
1113 | #define CACHE_DEF_INIT { STRBUF_INIT, 0, 0, 0 } | |
1114 | static inline void cache_def_clear(struct cache_def *cache) | |
1115 | { | |
1116 | strbuf_release(&cache->path); | |
1117 | } | |
1118 | ||
1119 | extern int has_symlink_leading_path(const char *name, int len); | |
1120 | extern int threaded_has_symlink_leading_path(struct cache_def *, const char *, int); | |
1121 | extern int check_leading_path(const char *name, int len); | |
1122 | extern int has_dirs_only_path(const char *name, int len, int prefix_len); | |
1123 | extern void schedule_dir_for_removal(const char *name, int len); | |
1124 | extern void remove_scheduled_dirs(void); | |
1125 | ||
1126 | extern struct alternate_object_database { | |
1127 | struct alternate_object_database *next; | |
1128 | char *name; | |
1129 | char base[FLEX_ARRAY]; /* more */ | |
1130 | } *alt_odb_list; | |
1131 | extern void prepare_alt_odb(void); | |
1132 | extern void read_info_alternates(const char * relative_base, int depth); | |
1133 | extern void add_to_alternates_file(const char *reference); | |
1134 | typedef int alt_odb_fn(struct alternate_object_database *, void *); | |
1135 | extern void foreach_alt_odb(alt_odb_fn, void*); | |
1136 | ||
1137 | struct pack_window { | |
1138 | struct pack_window *next; | |
1139 | unsigned char *base; | |
1140 | off_t offset; | |
1141 | size_t len; | |
1142 | unsigned int last_used; | |
1143 | unsigned int inuse_cnt; | |
1144 | }; | |
1145 | ||
1146 | extern struct packed_git { | |
1147 | struct packed_git *next; | |
1148 | struct pack_window *windows; | |
1149 | off_t pack_size; | |
1150 | const void *index_data; | |
1151 | size_t index_size; | |
1152 | uint32_t num_objects; | |
1153 | uint32_t num_bad_objects; | |
1154 | unsigned char *bad_object_sha1; | |
1155 | int index_version; | |
1156 | time_t mtime; | |
1157 | int pack_fd; | |
1158 | unsigned pack_local:1, | |
1159 | pack_keep:1, | |
1160 | do_not_close:1; | |
1161 | unsigned char sha1[20]; | |
1162 | /* something like ".git/objects/pack/xxxxx.pack" */ | |
1163 | char pack_name[FLEX_ARRAY]; /* more */ | |
1164 | } *packed_git; | |
1165 | ||
1166 | struct pack_entry { | |
1167 | off_t offset; | |
1168 | unsigned char sha1[20]; | |
1169 | struct packed_git *p; | |
1170 | }; | |
1171 | ||
1172 | extern struct packed_git *parse_pack_index(unsigned char *sha1, const char *idx_path); | |
1173 | ||
1174 | /* A hook for count-objects to report invalid files in pack directory */ | |
1175 | extern void (*report_garbage)(const char *desc, const char *path); | |
1176 | ||
1177 | extern void prepare_packed_git(void); | |
1178 | extern void reprepare_packed_git(void); | |
1179 | extern void install_packed_git(struct packed_git *pack); | |
1180 | ||
1181 | extern struct packed_git *find_sha1_pack(const unsigned char *sha1, | |
1182 | struct packed_git *packs); | |
1183 | ||
1184 | extern void pack_report(void); | |
1185 | ||
1186 | /* | |
1187 | * mmap the index file for the specified packfile (if it is not | |
1188 | * already mmapped). Return 0 on success. | |
1189 | */ | |
1190 | extern int open_pack_index(struct packed_git *); | |
1191 | ||
1192 | /* | |
1193 | * munmap the index file for the specified packfile (if it is | |
1194 | * currently mmapped). | |
1195 | */ | |
1196 | extern void close_pack_index(struct packed_git *); | |
1197 | ||
1198 | extern unsigned char *use_pack(struct packed_git *, struct pack_window **, off_t, unsigned long *); | |
1199 | extern void close_pack_windows(struct packed_git *); | |
1200 | extern void unuse_pack(struct pack_window **); | |
1201 | extern void free_pack_by_name(const char *); | |
1202 | extern void clear_delta_base_cache(void); | |
1203 | extern struct packed_git *add_packed_git(const char *, int, int); | |
1204 | ||
1205 | /* | |
1206 | * Return the SHA-1 of the nth object within the specified packfile. | |
1207 | * Open the index if it is not already open. The return value points | |
1208 | * at the SHA-1 within the mmapped index. Return NULL if there is an | |
1209 | * error. | |
1210 | */ | |
1211 | extern const unsigned char *nth_packed_object_sha1(struct packed_git *, uint32_t n); | |
1212 | ||
1213 | /* | |
1214 | * Return the offset of the nth object within the specified packfile. | |
1215 | * The index must already be opened. | |
1216 | */ | |
1217 | extern off_t nth_packed_object_offset(const struct packed_git *, uint32_t n); | |
1218 | ||
1219 | /* | |
1220 | * If the object named sha1 is present in the specified packfile, | |
1221 | * return its offset within the packfile; otherwise, return 0. | |
1222 | */ | |
1223 | extern off_t find_pack_entry_one(const unsigned char *sha1, struct packed_git *); | |
1224 | ||
1225 | extern int is_pack_valid(struct packed_git *); | |
1226 | extern void *unpack_entry(struct packed_git *, off_t, enum object_type *, unsigned long *); | |
1227 | extern unsigned long unpack_object_header_buffer(const unsigned char *buf, unsigned long len, enum object_type *type, unsigned long *sizep); | |
1228 | extern unsigned long get_size_from_delta(struct packed_git *, struct pack_window **, off_t); | |
1229 | extern int unpack_object_header(struct packed_git *, struct pack_window **, off_t *, unsigned long *); | |
1230 | ||
1231 | struct object_info { | |
1232 | /* Request */ | |
1233 | enum object_type *typep; | |
1234 | unsigned long *sizep; | |
1235 | unsigned long *disk_sizep; | |
1236 | unsigned char *delta_base_sha1; | |
1237 | ||
1238 | /* Response */ | |
1239 | enum { | |
1240 | OI_CACHED, | |
1241 | OI_LOOSE, | |
1242 | OI_PACKED, | |
1243 | OI_DBCACHED | |
1244 | } whence; | |
1245 | union { | |
1246 | /* | |
1247 | * struct { | |
1248 | * ... Nothing to expose in this case | |
1249 | * } cached; | |
1250 | * struct { | |
1251 | * ... Nothing to expose in this case | |
1252 | * } loose; | |
1253 | */ | |
1254 | struct { | |
1255 | struct packed_git *pack; | |
1256 | off_t offset; | |
1257 | unsigned int is_delta; | |
1258 | } packed; | |
1259 | } u; | |
1260 | }; | |
1261 | extern int sha1_object_info_extended(const unsigned char *, struct object_info *, unsigned flags); | |
1262 | ||
1263 | /* Dumb servers support */ | |
1264 | extern int update_server_info(int); | |
1265 | ||
1266 | /* git_config_parse_key() returns these negated: */ | |
1267 | #define CONFIG_INVALID_KEY 1 | |
1268 | #define CONFIG_NO_SECTION_OR_NAME 2 | |
1269 | /* git_config_set(), git_config_set_multivar() return the above or these: */ | |
1270 | #define CONFIG_NO_LOCK -1 | |
1271 | #define CONFIG_INVALID_FILE 3 | |
1272 | #define CONFIG_NO_WRITE 4 | |
1273 | #define CONFIG_NOTHING_SET 5 | |
1274 | #define CONFIG_INVALID_PATTERN 6 | |
1275 | #define CONFIG_GENERIC_ERROR 7 | |
1276 | ||
1277 | #define CONFIG_REGEX_NONE ((void *)1) | |
1278 | ||
1279 | struct git_config_source { | |
1280 | unsigned int use_stdin:1; | |
1281 | const char *file; | |
1282 | const char *blob; | |
1283 | }; | |
1284 | ||
1285 | typedef int (*config_fn_t)(const char *, const char *, void *); | |
1286 | extern int git_default_config(const char *, const char *, void *); | |
1287 | extern int git_config_from_file(config_fn_t fn, const char *, void *); | |
1288 | extern int git_config_from_buf(config_fn_t fn, const char *name, | |
1289 | const char *buf, size_t len, void *data); | |
1290 | extern void git_config_push_parameter(const char *text); | |
1291 | extern int git_config_from_parameters(config_fn_t fn, void *data); | |
1292 | extern int git_config(config_fn_t fn, void *); | |
1293 | extern int git_config_with_options(config_fn_t fn, void *, | |
1294 | struct git_config_source *config_source, | |
1295 | int respect_includes); | |
1296 | extern int git_config_early(config_fn_t fn, void *, const char *repo_config); | |
1297 | extern int git_parse_ulong(const char *, unsigned long *); | |
1298 | extern int git_config_int(const char *, const char *); | |
1299 | extern int64_t git_config_int64(const char *, const char *); | |
1300 | extern unsigned long git_config_ulong(const char *, const char *); | |
1301 | extern int git_config_bool_or_int(const char *, const char *, int *); | |
1302 | extern int git_config_bool(const char *, const char *); | |
1303 | extern int git_config_maybe_bool(const char *, const char *); | |
1304 | extern int git_config_string(const char **, const char *, const char *); | |
1305 | extern int git_config_pathname(const char **, const char *, const char *); | |
1306 | extern int git_config_set_in_file(const char *, const char *, const char *); | |
1307 | extern int git_config_set(const char *, const char *); | |
1308 | extern int git_config_parse_key(const char *, char **, int *); | |
1309 | extern int git_config_set_multivar(const char *, const char *, const char *, int); | |
1310 | extern int git_config_set_multivar_in_file(const char *, const char *, const char *, const char *, int); | |
1311 | extern int git_config_rename_section(const char *, const char *); | |
1312 | extern int git_config_rename_section_in_file(const char *, const char *, const char *); | |
1313 | extern const char *git_etc_gitconfig(void); | |
1314 | extern int check_repository_format_version(const char *var, const char *value, void *cb); | |
1315 | extern int git_env_bool(const char *, int); | |
1316 | extern int git_config_system(void); | |
1317 | extern int config_error_nonbool(const char *); | |
1318 | #if defined(__GNUC__) | |
1319 | #define config_error_nonbool(s) (config_error_nonbool(s), const_error()) | |
1320 | #endif | |
1321 | extern const char *get_log_output_encoding(void); | |
1322 | extern const char *get_commit_output_encoding(void); | |
1323 | ||
1324 | extern int git_config_parse_parameter(const char *, config_fn_t fn, void *data); | |
1325 | ||
1326 | struct config_include_data { | |
1327 | int depth; | |
1328 | config_fn_t fn; | |
1329 | void *data; | |
1330 | }; | |
1331 | #define CONFIG_INCLUDE_INIT { 0 } | |
1332 | extern int git_config_include(const char *name, const char *value, void *data); | |
1333 | ||
1334 | /* | |
1335 | * Match and parse a config key of the form: | |
1336 | * | |
1337 | * section.(subsection.)?key | |
1338 | * | |
1339 | * (i.e., what gets handed to a config_fn_t). The caller provides the section; | |
1340 | * we return -1 if it does not match, 0 otherwise. The subsection and key | |
1341 | * out-parameters are filled by the function (and subsection is NULL if it is | |
1342 | * missing). | |
1343 | */ | |
1344 | extern int parse_config_key(const char *var, | |
1345 | const char *section, | |
1346 | const char **subsection, int *subsection_len, | |
1347 | const char **key); | |
1348 | ||
1349 | extern int committer_ident_sufficiently_given(void); | |
1350 | extern int author_ident_sufficiently_given(void); | |
1351 | ||
1352 | extern const char *git_commit_encoding; | |
1353 | extern const char *git_log_output_encoding; | |
1354 | extern const char *git_mailmap_file; | |
1355 | extern const char *git_mailmap_blob; | |
1356 | ||
1357 | /* IO helper functions */ | |
1358 | extern void maybe_flush_or_die(FILE *, const char *); | |
1359 | extern int copy_fd(int ifd, int ofd); | |
1360 | extern int copy_file(const char *dst, const char *src, int mode); | |
1361 | extern int copy_file_with_time(const char *dst, const char *src, int mode); | |
1362 | extern void write_or_die(int fd, const void *buf, size_t count); | |
1363 | extern int write_or_whine(int fd, const void *buf, size_t count, const char *msg); | |
1364 | extern int write_or_whine_pipe(int fd, const void *buf, size_t count, const char *msg); | |
1365 | extern void fsync_or_die(int fd, const char *); | |
1366 | ||
1367 | extern ssize_t read_in_full(int fd, void *buf, size_t count); | |
1368 | extern ssize_t write_in_full(int fd, const void *buf, size_t count); | |
1369 | extern ssize_t pread_in_full(int fd, void *buf, size_t count, off_t offset); | |
1370 | ||
1371 | static inline ssize_t write_str_in_full(int fd, const char *str) | |
1372 | { | |
1373 | return write_in_full(fd, str, strlen(str)); | |
1374 | } | |
1375 | ||
1376 | /* pager.c */ | |
1377 | extern void setup_pager(void); | |
1378 | extern const char *pager_program; | |
1379 | extern int pager_in_use(void); | |
1380 | extern int pager_use_color; | |
1381 | extern int term_columns(void); | |
1382 | extern int decimal_width(int); | |
1383 | extern int check_pager_config(const char *cmd); | |
1384 | ||
1385 | extern const char *editor_program; | |
1386 | extern const char *askpass_program; | |
1387 | extern const char *excludes_file; | |
1388 | ||
1389 | /* base85 */ | |
1390 | int decode_85(char *dst, const char *line, int linelen); | |
1391 | void encode_85(char *buf, const unsigned char *data, int bytes); | |
1392 | ||
1393 | /* alloc.c */ | |
1394 | extern void *alloc_blob_node(void); | |
1395 | extern void *alloc_tree_node(void); | |
1396 | extern void *alloc_commit_node(void); | |
1397 | extern void *alloc_tag_node(void); | |
1398 | extern void *alloc_object_node(void); | |
1399 | extern void alloc_report(void); | |
1400 | extern unsigned int alloc_commit_index(void); | |
1401 | ||
1402 | /* pkt-line.c */ | |
1403 | void packet_trace_identity(const char *prog); | |
1404 | ||
1405 | /* add */ | |
1406 | /* | |
1407 | * return 0 if success, 1 - if addition of a file failed and | |
1408 | * ADD_FILES_IGNORE_ERRORS was specified in flags | |
1409 | */ | |
1410 | int add_files_to_cache(const char *prefix, const struct pathspec *pathspec, int flags); | |
1411 | ||
1412 | /* diff.c */ | |
1413 | extern int diff_auto_refresh_index; | |
1414 | ||
1415 | /* match-trees.c */ | |
1416 | void shift_tree(const unsigned char *, const unsigned char *, unsigned char *, int); | |
1417 | void shift_tree_by(const unsigned char *, const unsigned char *, unsigned char *, const char *); | |
1418 | ||
1419 | /* | |
1420 | * whitespace rules. | |
1421 | * used by both diff and apply | |
1422 | * last two digits are tab width | |
1423 | */ | |
1424 | #define WS_BLANK_AT_EOL 0100 | |
1425 | #define WS_SPACE_BEFORE_TAB 0200 | |
1426 | #define WS_INDENT_WITH_NON_TAB 0400 | |
1427 | #define WS_CR_AT_EOL 01000 | |
1428 | #define WS_BLANK_AT_EOF 02000 | |
1429 | #define WS_TAB_IN_INDENT 04000 | |
1430 | #define WS_TRAILING_SPACE (WS_BLANK_AT_EOL|WS_BLANK_AT_EOF) | |
1431 | #define WS_DEFAULT_RULE (WS_TRAILING_SPACE|WS_SPACE_BEFORE_TAB|8) | |
1432 | #define WS_TAB_WIDTH_MASK 077 | |
1433 | extern unsigned whitespace_rule_cfg; | |
1434 | extern unsigned whitespace_rule(const char *); | |
1435 | extern unsigned parse_whitespace_rule(const char *); | |
1436 | extern unsigned ws_check(const char *line, int len, unsigned ws_rule); | |
1437 | extern void ws_check_emit(const char *line, int len, unsigned ws_rule, FILE *stream, const char *set, const char *reset, const char *ws); | |
1438 | extern char *whitespace_error_string(unsigned ws); | |
1439 | extern void ws_fix_copy(struct strbuf *, const char *, int, unsigned, int *); | |
1440 | extern int ws_blank_line(const char *line, int len, unsigned ws_rule); | |
1441 | #define ws_tab_width(rule) ((rule) & WS_TAB_WIDTH_MASK) | |
1442 | ||
1443 | /* ls-files */ | |
1444 | int report_path_error(const char *ps_matched, const struct pathspec *pathspec, const char *prefix); | |
1445 | void overlay_tree_on_cache(const char *tree_name, const char *prefix); | |
1446 | ||
1447 | char *alias_lookup(const char *alias); | |
1448 | int split_cmdline(char *cmdline, const char ***argv); | |
1449 | /* Takes a negative value returned by split_cmdline */ | |
1450 | const char *split_cmdline_strerror(int cmdline_errno); | |
1451 | ||
1452 | /* git.c */ | |
1453 | struct startup_info { | |
1454 | int have_repository; | |
1455 | const char *prefix; | |
1456 | }; | |
1457 | extern struct startup_info *startup_info; | |
1458 | ||
1459 | /* merge.c */ | |
1460 | struct commit_list; | |
1461 | int try_merge_command(const char *strategy, size_t xopts_nr, | |
1462 | const char **xopts, struct commit_list *common, | |
1463 | const char *head_arg, struct commit_list *remotes); | |
1464 | int checkout_fast_forward(const unsigned char *from, | |
1465 | const unsigned char *to, | |
1466 | int overwrite_ignore); | |
1467 | ||
1468 | ||
1469 | int sane_execvp(const char *file, char *const argv[]); | |
1470 | ||
1471 | /* | |
1472 | * A struct to encapsulate the concept of whether a file has changed | |
1473 | * since we last checked it. This uses criteria similar to those used | |
1474 | * for the index. | |
1475 | */ | |
1476 | struct stat_validity { | |
1477 | struct stat_data *sd; | |
1478 | }; | |
1479 | ||
1480 | void stat_validity_clear(struct stat_validity *sv); | |
1481 | ||
1482 | /* | |
1483 | * Returns 1 if the path is a regular file (or a symlink to a regular | |
1484 | * file) and matches the saved stat_validity, 0 otherwise. A missing | |
1485 | * or inaccessible file is considered a match if the struct was just | |
1486 | * initialized, or if the previous update found an inaccessible file. | |
1487 | */ | |
1488 | int stat_validity_check(struct stat_validity *sv, const char *path); | |
1489 | ||
1490 | /* | |
1491 | * Update the stat_validity from a file opened at descriptor fd. If | |
1492 | * the file is missing, inaccessible, or not a regular file, then | |
1493 | * future calls to stat_validity_check will match iff one of those | |
1494 | * conditions continues to be true. | |
1495 | */ | |
1496 | void stat_validity_update(struct stat_validity *sv, int fd); | |
1497 | ||
1498 | int versioncmp(const char *s1, const char *s2); | |
1499 | ||
1500 | #endif /* CACHE_H */ |