Merge 'home' into HEAD
[git/mingw/4msysgit.git] / cache.h
blob2ab5dd45b218ca36f4c50ce70bbcba1002596511
1 #ifndef CACHE_H
2 #define CACHE_H
4 #include "git-compat-util.h"
5 #include "strbuf.h"
6 #include "hash.h"
7 #include "advice.h"
8 #include "gettext.h"
9 #include "convert.h"
11 #include SHA1_HEADER
12 #ifndef git_SHA_CTX
13 #define git_SHA_CTX SHA_CTX
14 #define git_SHA1_Init SHA1_Init
15 #define git_SHA1_Update SHA1_Update
16 #define git_SHA1_Final SHA1_Final
17 #endif
19 #include <zlib.h>
20 typedef struct git_zstream {
21 z_stream z;
22 unsigned long avail_in;
23 unsigned long avail_out;
24 unsigned long total_in;
25 unsigned long total_out;
26 unsigned char *next_in;
27 unsigned char *next_out;
28 } git_zstream;
30 void git_inflate_init(git_zstream *);
31 void git_inflate_init_gzip_only(git_zstream *);
32 void git_inflate_end(git_zstream *);
33 int git_inflate(git_zstream *, int flush);
35 void git_deflate_init(git_zstream *, int level);
36 void git_deflate_init_gzip(git_zstream *, int level);
37 void git_deflate_init_raw(git_zstream *, int level);
38 void git_deflate_end(git_zstream *);
39 int git_deflate_abort(git_zstream *);
40 int git_deflate_end_gently(git_zstream *);
41 int git_deflate(git_zstream *, int flush);
42 unsigned long git_deflate_bound(git_zstream *, unsigned long);
44 #if defined(DT_UNKNOWN) && !defined(NO_D_TYPE_IN_DIRENT)
45 #define DTYPE(de) ((de)->d_type)
46 #else
47 #undef DT_UNKNOWN
48 #undef DT_DIR
49 #undef DT_REG
50 #undef DT_LNK
51 #define DT_UNKNOWN 0
52 #define DT_DIR 1
53 #define DT_REG 2
54 #define DT_LNK 3
55 #define DTYPE(de) DT_UNKNOWN
56 #endif
58 /* unknown mode (impossible combination S_IFIFO|S_IFCHR) */
59 #define S_IFINVALID 0030000
62 * A "directory link" is a link to another git directory.
64 * The value 0160000 is not normally a valid mode, and
65 * also just happens to be S_IFDIR + S_IFLNK
67 * NOTE! We *really* shouldn't depend on the S_IFxxx macros
68 * always having the same values everywhere. We should use
69 * our internal git values for these things, and then we can
70 * translate that to the OS-specific value. It just so
71 * happens that everybody shares the same bit representation
72 * in the UNIX world (and apparently wider too..)
74 #define S_IFGITLINK 0160000
75 #define S_ISGITLINK(m) (((m) & S_IFMT) == S_IFGITLINK)
78 * Intensive research over the course of many years has shown that
79 * port 9418 is totally unused by anything else. Or
81 * Your search - "port 9418" - did not match any documents.
83 * as www.google.com puts it.
85 * This port has been properly assigned for git use by IANA:
86 * git (Assigned-9418) [I06-050728-0001].
88 * git 9418/tcp git pack transfer service
89 * git 9418/udp git pack transfer service
91 * with Linus Torvalds <torvalds@osdl.org> as the point of
92 * contact. September 2005.
94 * See http://www.iana.org/assignments/port-numbers
96 #define DEFAULT_GIT_PORT 9418
99 * Basic data structures for the directory cache
102 #define CACHE_SIGNATURE 0x44495243 /* "DIRC" */
103 struct cache_header {
104 uint32_t hdr_signature;
105 uint32_t hdr_version;
106 uint32_t hdr_entries;
109 #define INDEX_FORMAT_LB 2
110 #define INDEX_FORMAT_UB 4
113 * The "cache_time" is just the low 32 bits of the
114 * time. It doesn't matter if it overflows - we only
115 * check it for equality in the 32 bits we save.
117 struct cache_time {
118 uint32_t sec;
119 uint32_t nsec;
122 struct stat_data {
123 struct cache_time sd_ctime;
124 struct cache_time sd_mtime;
125 unsigned int sd_dev;
126 unsigned int sd_ino;
127 unsigned int sd_uid;
128 unsigned int sd_gid;
129 unsigned int sd_size;
132 struct cache_entry {
133 struct stat_data ce_stat_data;
134 unsigned int ce_mode;
135 unsigned int ce_flags;
136 unsigned int ce_namelen;
137 unsigned char sha1[20];
138 struct cache_entry *next;
139 char name[FLEX_ARRAY]; /* more */
142 #define CE_STAGEMASK (0x3000)
143 #define CE_EXTENDED (0x4000)
144 #define CE_VALID (0x8000)
145 #define CE_STAGESHIFT 12
148 * Range 0xFFFF0000 in ce_flags is divided into
149 * two parts: in-memory flags and on-disk ones.
150 * Flags in CE_EXTENDED_FLAGS will get saved on-disk
151 * if you want to save a new flag, add it in
152 * CE_EXTENDED_FLAGS
154 * In-memory only flags
156 #define CE_UPDATE (1 << 16)
157 #define CE_REMOVE (1 << 17)
158 #define CE_UPTODATE (1 << 18)
159 #define CE_ADDED (1 << 19)
161 #define CE_HASHED (1 << 20)
162 #define CE_UNHASHED (1 << 21)
163 #define CE_WT_REMOVE (1 << 22) /* remove in work directory */
164 #define CE_CONFLICTED (1 << 23)
166 #define CE_UNPACKED (1 << 24)
167 #define CE_NEW_SKIP_WORKTREE (1 << 25)
169 /* used to temporarily mark paths matched by pathspecs */
170 #define CE_MATCHED (1 << 26)
173 * Extended on-disk flags
175 #define CE_INTENT_TO_ADD (1 << 29)
176 #define CE_SKIP_WORKTREE (1 << 30)
177 /* CE_EXTENDED2 is for future extension */
178 #define CE_EXTENDED2 (1 << 31)
180 #define CE_EXTENDED_FLAGS (CE_INTENT_TO_ADD | CE_SKIP_WORKTREE)
183 * Safeguard to avoid saving wrong flags:
184 * - CE_EXTENDED2 won't get saved until its semantic is known
185 * - Bits in 0x0000FFFF have been saved in ce_flags already
186 * - Bits in 0x003F0000 are currently in-memory flags
188 #if CE_EXTENDED_FLAGS & 0x803FFFFF
189 #error "CE_EXTENDED_FLAGS out of range"
190 #endif
192 struct pathspec;
195 * Copy the sha1 and stat state of a cache entry from one to
196 * another. But we never change the name, or the hash state!
198 #define CE_STATE_MASK (CE_HASHED | CE_UNHASHED)
199 static inline void copy_cache_entry(struct cache_entry *dst,
200 const struct cache_entry *src)
202 unsigned int state = dst->ce_flags & CE_STATE_MASK;
204 /* Don't copy hash chain and name */
205 memcpy(dst, src, offsetof(struct cache_entry, next));
207 /* Restore the hash state */
208 dst->ce_flags = (dst->ce_flags & ~CE_STATE_MASK) | state;
211 static inline unsigned create_ce_flags(unsigned stage)
213 return (stage << CE_STAGESHIFT);
216 #define ce_namelen(ce) ((ce)->ce_namelen)
217 #define ce_size(ce) cache_entry_size(ce_namelen(ce))
218 #define ce_stage(ce) ((CE_STAGEMASK & (ce)->ce_flags) >> CE_STAGESHIFT)
219 #define ce_uptodate(ce) ((ce)->ce_flags & CE_UPTODATE)
220 #define ce_skip_worktree(ce) ((ce)->ce_flags & CE_SKIP_WORKTREE)
221 #define ce_mark_uptodate(ce) ((ce)->ce_flags |= CE_UPTODATE)
223 #define ce_permissions(mode) (((mode) & 0100) ? 0755 : 0644)
224 static inline unsigned int create_ce_mode(unsigned int mode)
226 if (S_ISLNK(mode))
227 return S_IFLNK;
228 if (S_ISDIR(mode) || S_ISGITLINK(mode))
229 return S_IFGITLINK;
230 return S_IFREG | ce_permissions(mode);
232 static inline unsigned int ce_mode_from_stat(const struct cache_entry *ce,
233 unsigned int mode)
235 extern int trust_executable_bit, has_symlinks;
236 if (!has_symlinks && S_ISREG(mode) &&
237 ce && S_ISLNK(ce->ce_mode))
238 return ce->ce_mode;
239 if (!trust_executable_bit && S_ISREG(mode)) {
240 if (ce && S_ISREG(ce->ce_mode))
241 return ce->ce_mode;
242 return create_ce_mode(0666);
244 return create_ce_mode(mode);
246 static inline int ce_to_dtype(const struct cache_entry *ce)
248 unsigned ce_mode = ntohl(ce->ce_mode);
249 if (S_ISREG(ce_mode))
250 return DT_REG;
251 else if (S_ISDIR(ce_mode) || S_ISGITLINK(ce_mode))
252 return DT_DIR;
253 else if (S_ISLNK(ce_mode))
254 return DT_LNK;
255 else
256 return DT_UNKNOWN;
258 static inline unsigned int canon_mode(unsigned int mode)
260 if (S_ISREG(mode))
261 return S_IFREG | ce_permissions(mode);
262 if (S_ISLNK(mode))
263 return S_IFLNK;
264 if (S_ISDIR(mode))
265 return S_IFDIR;
266 return S_IFGITLINK;
269 #define cache_entry_size(len) (offsetof(struct cache_entry,name) + (len) + 1)
271 struct index_state {
272 struct cache_entry **cache;
273 unsigned int version;
274 unsigned int cache_nr, cache_alloc, cache_changed;
275 struct string_list *resolve_undo;
276 struct cache_tree *cache_tree;
277 struct cache_time timestamp;
278 unsigned name_hash_initialized : 1,
279 initialized : 1;
280 struct hash_table name_hash;
281 struct hash_table dir_hash;
284 extern struct index_state the_index;
286 /* Name hashing */
287 extern void add_name_hash(struct index_state *istate, struct cache_entry *ce);
288 extern void remove_name_hash(struct index_state *istate, struct cache_entry *ce);
289 extern void free_name_hash(struct index_state *istate);
292 #ifndef NO_THE_INDEX_COMPATIBILITY_MACROS
293 #define active_cache (the_index.cache)
294 #define active_nr (the_index.cache_nr)
295 #define active_alloc (the_index.cache_alloc)
296 #define active_cache_changed (the_index.cache_changed)
297 #define active_cache_tree (the_index.cache_tree)
299 #define read_cache() read_index(&the_index)
300 #define read_cache_from(path) read_index_from(&the_index, (path))
301 #define read_cache_preload(pathspec) read_index_preload(&the_index, (pathspec))
302 #define is_cache_unborn() is_index_unborn(&the_index)
303 #define read_cache_unmerged() read_index_unmerged(&the_index)
304 #define write_cache(newfd, cache, entries) write_index(&the_index, (newfd))
305 #define discard_cache() discard_index(&the_index)
306 #define unmerged_cache() unmerged_index(&the_index)
307 #define cache_name_pos(name, namelen) index_name_pos(&the_index,(name),(namelen))
308 #define add_cache_entry(ce, option) add_index_entry(&the_index, (ce), (option))
309 #define rename_cache_entry_at(pos, new_name) rename_index_entry_at(&the_index, (pos), (new_name))
310 #define remove_cache_entry_at(pos) remove_index_entry_at(&the_index, (pos))
311 #define remove_file_from_cache(path) remove_file_from_index(&the_index, (path))
312 #define add_to_cache(path, st, flags) add_to_index(&the_index, (path), (st), (flags))
313 #define add_file_to_cache(path, flags) add_file_to_index(&the_index, (path), (flags))
314 #define refresh_cache(flags) refresh_index(&the_index, (flags), NULL, NULL, NULL)
315 #define ce_match_stat(ce, st, options) ie_match_stat(&the_index, (ce), (st), (options))
316 #define ce_modified(ce, st, options) ie_modified(&the_index, (ce), (st), (options))
317 #define cache_dir_exists(name, namelen) index_dir_exists(&the_index, (name), (namelen))
318 #define cache_file_exists(name, namelen, igncase) index_file_exists(&the_index, (name), (namelen), (igncase))
319 #define cache_name_exists(name, namelen, igncase) index_name_exists(&the_index, (name), (namelen), (igncase))
320 #define cache_name_is_other(name, namelen) index_name_is_other(&the_index, (name), (namelen))
321 #define resolve_undo_clear() resolve_undo_clear_index(&the_index)
322 #define unmerge_cache_entry_at(at) unmerge_index_entry_at(&the_index, at)
323 #define unmerge_cache(pathspec) unmerge_index(&the_index, pathspec)
324 #define read_blob_data_from_cache(path, sz) read_blob_data_from_index(&the_index, (path), (sz))
325 #endif
327 enum object_type {
328 OBJ_BAD = -1,
329 OBJ_NONE = 0,
330 OBJ_COMMIT = 1,
331 OBJ_TREE = 2,
332 OBJ_BLOB = 3,
333 OBJ_TAG = 4,
334 /* 5 for future expansion */
335 OBJ_OFS_DELTA = 6,
336 OBJ_REF_DELTA = 7,
337 OBJ_ANY,
338 OBJ_MAX
341 static inline enum object_type object_type(unsigned int mode)
343 return S_ISDIR(mode) ? OBJ_TREE :
344 S_ISGITLINK(mode) ? OBJ_COMMIT :
345 OBJ_BLOB;
348 /* Double-check local_repo_env below if you add to this list. */
349 #define GIT_DIR_ENVIRONMENT "GIT_DIR"
350 #define GIT_NAMESPACE_ENVIRONMENT "GIT_NAMESPACE"
351 #define GIT_WORK_TREE_ENVIRONMENT "GIT_WORK_TREE"
352 #define GIT_PREFIX_ENVIRONMENT "GIT_PREFIX"
353 #define DEFAULT_GIT_DIR_ENVIRONMENT ".git"
354 #define DB_ENVIRONMENT "GIT_OBJECT_DIRECTORY"
355 #define INDEX_ENVIRONMENT "GIT_INDEX_FILE"
356 #define GRAFT_ENVIRONMENT "GIT_GRAFT_FILE"
357 #define GIT_SHALLOW_FILE_ENVIRONMENT "GIT_SHALLOW_FILE"
358 #define TEMPLATE_DIR_ENVIRONMENT "GIT_TEMPLATE_DIR"
359 #define CONFIG_ENVIRONMENT "GIT_CONFIG"
360 #define CONFIG_DATA_ENVIRONMENT "GIT_CONFIG_PARAMETERS"
361 #define EXEC_PATH_ENVIRONMENT "GIT_EXEC_PATH"
362 #define CEILING_DIRECTORIES_ENVIRONMENT "GIT_CEILING_DIRECTORIES"
363 #define NO_REPLACE_OBJECTS_ENVIRONMENT "GIT_NO_REPLACE_OBJECTS"
364 #define GITATTRIBUTES_FILE ".gitattributes"
365 #define INFOATTRIBUTES_FILE "info/attributes"
366 #define ATTRIBUTE_MACRO_PREFIX "[attr]"
367 #define GIT_NOTES_REF_ENVIRONMENT "GIT_NOTES_REF"
368 #define GIT_NOTES_DEFAULT_REF "refs/notes/commits"
369 #define GIT_NOTES_DISPLAY_REF_ENVIRONMENT "GIT_NOTES_DISPLAY_REF"
370 #define GIT_NOTES_REWRITE_REF_ENVIRONMENT "GIT_NOTES_REWRITE_REF"
371 #define GIT_NOTES_REWRITE_MODE_ENVIRONMENT "GIT_NOTES_REWRITE_MODE"
372 #define GIT_LITERAL_PATHSPECS_ENVIRONMENT "GIT_LITERAL_PATHSPECS"
373 #define GIT_GLOB_PATHSPECS_ENVIRONMENT "GIT_GLOB_PATHSPECS"
374 #define GIT_NOGLOB_PATHSPECS_ENVIRONMENT "GIT_NOGLOB_PATHSPECS"
375 #define GIT_ICASE_PATHSPECS_ENVIRONMENT "GIT_ICASE_PATHSPECS"
378 * This environment variable is expected to contain a boolean indicating
379 * whether we should or should not treat:
381 * GIT_DIR=foo.git git ...
383 * as if GIT_WORK_TREE=. was given. It's not expected that users will make use
384 * of this, but we use it internally to communicate to sub-processes that we
385 * are in a bare repo. If not set, defaults to true.
387 #define GIT_IMPLICIT_WORK_TREE_ENVIRONMENT "GIT_IMPLICIT_WORK_TREE"
390 * Repository-local GIT_* environment variables; these will be cleared
391 * when git spawns a sub-process that runs inside another repository.
392 * The array is NULL-terminated, which makes it easy to pass in the "env"
393 * parameter of a run-command invocation, or to do a simple walk.
395 extern const char * const local_repo_env[];
397 extern int is_bare_repository_cfg;
398 extern int is_bare_repository(void);
399 extern int is_inside_git_dir(void);
400 extern char *git_work_tree_cfg;
401 extern int is_inside_work_tree(void);
402 extern const char *get_git_dir(void);
403 extern int is_git_directory(const char *path);
404 extern char *get_object_directory(void);
405 extern char *get_index_file(void);
406 extern char *get_graft_file(void);
407 extern int set_git_dir(const char *path);
408 extern const char *get_git_namespace(void);
409 extern const char *strip_namespace(const char *namespaced_ref);
410 extern const char *get_git_work_tree(void);
411 extern const char *read_gitfile(const char *path);
412 extern const char *resolve_gitdir(const char *suspect);
413 extern void set_git_work_tree(const char *tree);
415 #define ALTERNATE_DB_ENVIRONMENT "GIT_ALTERNATE_OBJECT_DIRECTORIES"
417 extern const char **get_pathspec(const char *prefix, const char **pathspec);
418 extern void setup_work_tree(void);
419 extern const char *setup_git_directory_gently(int *);
420 extern const char *setup_git_directory(void);
421 extern char *prefix_path(const char *prefix, int len, const char *path);
422 extern char *prefix_path_gently(const char *prefix, int len, int *remaining, const char *path);
423 extern const char *prefix_filename(const char *prefix, int len, const char *path);
424 extern int check_filename(const char *prefix, const char *name);
425 extern void verify_filename(const char *prefix,
426 const char *name,
427 int diagnose_misspelt_rev);
428 extern void verify_non_filename(const char *prefix, const char *name);
429 extern int path_inside_repo(const char *prefix, const char *path);
431 #define INIT_DB_QUIET 0x0001
433 extern int set_git_dir_init(const char *git_dir, const char *real_git_dir, int);
434 extern int init_db(const char *template_dir, unsigned int flags);
436 extern void sanitize_stdfds(void);
438 #define alloc_nr(x) (((x)+16)*3/2)
441 * Realloc the buffer pointed at by variable 'x' so that it can hold
442 * at least 'nr' entries; the number of entries currently allocated
443 * is 'alloc', using the standard growing factor alloc_nr() macro.
445 * DO NOT USE any expression with side-effect for 'x', 'nr', or 'alloc'.
447 #define ALLOC_GROW(x, nr, alloc) \
448 do { \
449 if ((nr) > alloc) { \
450 if (alloc_nr(alloc) < (nr)) \
451 alloc = (nr); \
452 else \
453 alloc = alloc_nr(alloc); \
454 x = xrealloc((x), alloc * sizeof(*(x))); \
456 } while (0)
458 /* Initialize and use the cache information */
459 extern int read_index(struct index_state *);
460 extern int read_index_preload(struct index_state *, const struct pathspec *pathspec);
461 extern int read_index_from(struct index_state *, const char *path);
462 extern int is_index_unborn(struct index_state *);
463 extern int read_index_unmerged(struct index_state *);
464 extern int write_index(struct index_state *, int newfd);
465 extern int discard_index(struct index_state *);
466 extern int unmerged_index(const struct index_state *);
467 extern int verify_path(const char *path);
468 extern struct cache_entry *index_dir_exists(struct index_state *istate, const char *name, int namelen);
469 extern struct cache_entry *index_file_exists(struct index_state *istate, const char *name, int namelen, int igncase);
470 extern struct cache_entry *index_name_exists(struct index_state *istate, const char *name, int namelen, int igncase);
471 extern int index_name_pos(const struct index_state *, const char *name, int namelen);
472 #define ADD_CACHE_OK_TO_ADD 1 /* Ok to add */
473 #define ADD_CACHE_OK_TO_REPLACE 2 /* Ok to replace file/directory */
474 #define ADD_CACHE_SKIP_DFCHECK 4 /* Ok to skip DF conflict checks */
475 #define ADD_CACHE_JUST_APPEND 8 /* Append only; tree.c::read_tree() */
476 #define ADD_CACHE_NEW_ONLY 16 /* Do not replace existing ones */
477 extern int add_index_entry(struct index_state *, struct cache_entry *ce, int option);
478 extern void rename_index_entry_at(struct index_state *, int pos, const char *new_name);
479 extern int remove_index_entry_at(struct index_state *, int pos);
480 extern void remove_marked_cache_entries(struct index_state *istate);
481 extern int remove_file_from_index(struct index_state *, const char *path);
482 #define ADD_CACHE_VERBOSE 1
483 #define ADD_CACHE_PRETEND 2
484 #define ADD_CACHE_IGNORE_ERRORS 4
485 #define ADD_CACHE_IGNORE_REMOVAL 8
486 #define ADD_CACHE_INTENT 16
487 #define ADD_CACHE_IMPLICIT_DOT 32 /* internal to "git add -u/-A" */
488 extern int add_to_index(struct index_state *, const char *path, struct stat *, int flags);
489 extern int add_file_to_index(struct index_state *, const char *path, int flags);
490 extern struct cache_entry *make_cache_entry(unsigned int mode, const unsigned char *sha1, const char *path, int stage, unsigned int refresh_options);
491 extern int ce_same_name(const struct cache_entry *a, const struct cache_entry *b);
492 extern int index_name_is_other(const struct index_state *, const char *, int);
493 extern void *read_blob_data_from_index(struct index_state *, const char *, unsigned long *);
495 /* do stat comparison even if CE_VALID is true */
496 #define CE_MATCH_IGNORE_VALID 01
497 /* do not check the contents but report dirty on racily-clean entries */
498 #define CE_MATCH_RACY_IS_DIRTY 02
499 /* do stat comparison even if CE_SKIP_WORKTREE is true */
500 #define CE_MATCH_IGNORE_SKIP_WORKTREE 04
501 /* ignore non-existent files during stat update */
502 #define CE_MATCH_IGNORE_MISSING 0x08
503 /* enable stat refresh */
504 #define CE_MATCH_REFRESH 0x10
505 extern int ie_match_stat(const struct index_state *, const struct cache_entry *, struct stat *, unsigned int);
506 extern int ie_modified(const struct index_state *, const struct cache_entry *, struct stat *, unsigned int);
508 #define HASH_WRITE_OBJECT 1
509 #define HASH_FORMAT_CHECK 2
510 extern int index_fd(unsigned char *sha1, int fd, struct stat *st, enum object_type type, const char *path, unsigned flags);
511 extern int index_path(unsigned char *sha1, const char *path, struct stat *st, unsigned flags);
514 * Record to sd the data from st that we use to check whether a file
515 * might have changed.
517 extern void fill_stat_data(struct stat_data *sd, struct stat *st);
520 * Return 0 if st is consistent with a file not having been changed
521 * since sd was filled. If there are differences, return a
522 * combination of MTIME_CHANGED, CTIME_CHANGED, OWNER_CHANGED,
523 * INODE_CHANGED, and DATA_CHANGED.
525 extern int match_stat_data(const struct stat_data *sd, struct stat *st);
527 extern void fill_stat_cache_info(struct cache_entry *ce, struct stat *st);
529 #define REFRESH_REALLY 0x0001 /* ignore_valid */
530 #define REFRESH_UNMERGED 0x0002 /* allow unmerged */
531 #define REFRESH_QUIET 0x0004 /* be quiet about it */
532 #define REFRESH_IGNORE_MISSING 0x0008 /* ignore non-existent */
533 #define REFRESH_IGNORE_SUBMODULES 0x0010 /* ignore submodules */
534 #define REFRESH_IN_PORCELAIN 0x0020 /* user friendly output, not "needs update" */
535 extern int refresh_index(struct index_state *, unsigned int flags, const struct pathspec *pathspec, char *seen, const char *header_msg);
537 struct lock_file {
538 struct lock_file *next;
539 int fd;
540 pid_t owner;
541 char on_list;
542 char filename[PATH_MAX];
544 #define LOCK_DIE_ON_ERROR 1
545 #define LOCK_NODEREF 2
546 extern int unable_to_lock_error(const char *path, int err);
547 extern NORETURN void unable_to_lock_index_die(const char *path, int err);
548 extern int hold_lock_file_for_update(struct lock_file *, const char *path, int);
549 extern int hold_lock_file_for_append(struct lock_file *, const char *path, int);
550 extern int commit_lock_file(struct lock_file *);
551 extern void update_index_if_able(struct index_state *, struct lock_file *);
553 extern int hold_locked_index(struct lock_file *, int);
554 extern int commit_locked_index(struct lock_file *);
555 extern void set_alternate_index_output(const char *);
556 extern int close_lock_file(struct lock_file *);
557 extern void rollback_lock_file(struct lock_file *);
558 extern int delete_ref(const char *, const unsigned char *sha1, int delopt);
560 /* Environment bits from configuration mechanism */
561 extern int trust_executable_bit;
562 extern int trust_ctime;
563 extern int check_stat;
564 extern int quote_path_fully;
565 extern int has_symlinks;
566 extern int minimum_abbrev, default_abbrev;
567 extern int ignore_case;
568 extern int assume_unchanged;
569 extern int prefer_symlink_refs;
570 extern int log_all_ref_updates;
571 extern int warn_ambiguous_refs;
572 extern int warn_on_object_refname_ambiguity;
573 extern int shared_repository;
574 extern const char *apply_default_whitespace;
575 extern const char *apply_default_ignorewhitespace;
576 extern const char *git_attributes_file;
577 extern int zlib_compression_level;
578 extern int core_compression_level;
579 extern int core_compression_seen;
580 extern size_t packed_git_window_size;
581 extern size_t packed_git_limit;
582 extern size_t delta_base_cache_limit;
583 extern unsigned long big_file_threshold;
584 extern unsigned long pack_size_limit_cfg;
585 extern int read_replace_refs;
586 extern int fsync_object_files;
587 extern int core_preload_index;
588 extern int core_apply_sparse_checkout;
589 extern int precomposed_unicode;
592 * The character that begins a commented line in user-editable file
593 * that is subject to stripspace.
595 extern char comment_line_char;
597 enum hide_dotfiles_type {
598 HIDE_DOTFILES_FALSE = 0,
599 HIDE_DOTFILES_TRUE,
600 HIDE_DOTFILES_DOTGITONLY,
602 extern enum hide_dotfiles_type hide_dotfiles;
604 enum branch_track {
605 BRANCH_TRACK_UNSPECIFIED = -1,
606 BRANCH_TRACK_NEVER = 0,
607 BRANCH_TRACK_REMOTE,
608 BRANCH_TRACK_ALWAYS,
609 BRANCH_TRACK_EXPLICIT,
610 BRANCH_TRACK_OVERRIDE
613 enum rebase_setup_type {
614 AUTOREBASE_NEVER = 0,
615 AUTOREBASE_LOCAL,
616 AUTOREBASE_REMOTE,
617 AUTOREBASE_ALWAYS
620 enum push_default_type {
621 PUSH_DEFAULT_NOTHING = 0,
622 PUSH_DEFAULT_MATCHING,
623 PUSH_DEFAULT_SIMPLE,
624 PUSH_DEFAULT_UPSTREAM,
625 PUSH_DEFAULT_CURRENT,
626 PUSH_DEFAULT_UNSPECIFIED
629 extern enum branch_track git_branch_track;
630 extern enum rebase_setup_type autorebase;
631 extern enum push_default_type push_default;
633 enum object_creation_mode {
634 OBJECT_CREATION_USES_HARDLINKS = 0,
635 OBJECT_CREATION_USES_RENAMES = 1
638 extern enum object_creation_mode object_creation_mode;
640 extern char *notes_ref_name;
642 extern int grafts_replace_parents;
644 #define GIT_REPO_VERSION 0
645 extern int repository_format_version;
646 extern int check_repository_format(void);
648 #define MTIME_CHANGED 0x0001
649 #define CTIME_CHANGED 0x0002
650 #define OWNER_CHANGED 0x0004
651 #define MODE_CHANGED 0x0008
652 #define INODE_CHANGED 0x0010
653 #define DATA_CHANGED 0x0020
654 #define TYPE_CHANGED 0x0040
656 extern char *mksnpath(char *buf, size_t n, const char *fmt, ...)
657 __attribute__((format (printf, 3, 4)));
658 extern char *git_snpath(char *buf, size_t n, const char *fmt, ...)
659 __attribute__((format (printf, 3, 4)));
660 extern char *git_pathdup(const char *fmt, ...)
661 __attribute__((format (printf, 1, 2)));
662 extern char *mkpathdup(const char *fmt, ...)
663 __attribute__((format (printf, 1, 2)));
665 /* Return a statically allocated filename matching the sha1 signature */
666 extern char *mkpath(const char *fmt, ...) __attribute__((format (printf, 1, 2)));
667 extern char *git_path(const char *fmt, ...) __attribute__((format (printf, 1, 2)));
668 extern char *git_path_submodule(const char *path, const char *fmt, ...)
669 __attribute__((format (printf, 2, 3)));
671 extern char *sha1_file_name(const unsigned char *sha1);
672 extern char *sha1_pack_name(const unsigned char *sha1);
673 extern char *sha1_pack_index_name(const unsigned char *sha1);
674 extern const char *find_unique_abbrev(const unsigned char *sha1, int);
675 extern const unsigned char null_sha1[20];
677 static inline int hashcmp(const unsigned char *sha1, const unsigned char *sha2)
679 int i;
681 for (i = 0; i < 20; i++, sha1++, sha2++) {
682 if (*sha1 != *sha2)
683 return *sha1 - *sha2;
686 return 0;
689 static inline int is_null_sha1(const unsigned char *sha1)
691 return !hashcmp(sha1, null_sha1);
694 static inline void hashcpy(unsigned char *sha_dst, const unsigned char *sha_src)
696 memcpy(sha_dst, sha_src, 20);
698 static inline void hashclr(unsigned char *hash)
700 memset(hash, 0, 20);
703 #define EMPTY_TREE_SHA1_HEX \
704 "4b825dc642cb6eb9a060e54bf8d69288fbee4904"
705 #define EMPTY_TREE_SHA1_BIN_LITERAL \
706 "\x4b\x82\x5d\xc6\x42\xcb\x6e\xb9\xa0\x60" \
707 "\xe5\x4b\xf8\xd6\x92\x88\xfb\xee\x49\x04"
708 #define EMPTY_TREE_SHA1_BIN \
709 ((const unsigned char *) EMPTY_TREE_SHA1_BIN_LITERAL)
711 #define EMPTY_BLOB_SHA1_HEX \
712 "e69de29bb2d1d6434b8b29ae775ad8c2e48c5391"
713 #define EMPTY_BLOB_SHA1_BIN_LITERAL \
714 "\xe6\x9d\xe2\x9b\xb2\xd1\xd6\x43\x4b\x8b" \
715 "\x29\xae\x77\x5a\xd8\xc2\xe4\x8c\x53\x91"
716 #define EMPTY_BLOB_SHA1_BIN \
717 ((const unsigned char *) EMPTY_BLOB_SHA1_BIN_LITERAL)
719 static inline int is_empty_blob_sha1(const unsigned char *sha1)
721 return !hashcmp(sha1, EMPTY_BLOB_SHA1_BIN);
724 int git_mkstemp(char *path, size_t n, const char *template);
726 int git_mkstemps(char *path, size_t n, const char *template, int suffix_len);
728 /* set default permissions by passing mode arguments to open(2) */
729 int git_mkstemps_mode(char *pattern, int suffix_len, int mode);
730 int git_mkstemp_mode(char *pattern, int mode);
733 * NOTE NOTE NOTE!!
735 * PERM_UMASK, OLD_PERM_GROUP and OLD_PERM_EVERYBODY enumerations must
736 * not be changed. Old repositories have core.sharedrepository written in
737 * numeric format, and therefore these values are preserved for compatibility
738 * reasons.
740 enum sharedrepo {
741 PERM_UMASK = 0,
742 OLD_PERM_GROUP = 1,
743 OLD_PERM_EVERYBODY = 2,
744 PERM_GROUP = 0660,
745 PERM_EVERYBODY = 0664
747 int git_config_perm(const char *var, const char *value);
748 int adjust_shared_perm(const char *path);
751 * Create the directory containing the named path, using care to be
752 * somewhat safe against races. Return one of the scld_error values
753 * to indicate success/failure.
755 * SCLD_VANISHED indicates that one of the ancestor directories of the
756 * path existed at one point during the function call and then
757 * suddenly vanished, probably because another process pruned the
758 * directory while we were working. To be robust against this kind of
759 * race, callers might want to try invoking the function again when it
760 * returns SCLD_VANISHED.
762 enum scld_error {
763 SCLD_OK = 0,
764 SCLD_FAILED = -1,
765 SCLD_PERMS = -2,
766 SCLD_EXISTS = -3,
767 SCLD_VANISHED = -4
769 enum scld_error safe_create_leading_directories(char *path);
770 enum scld_error safe_create_leading_directories_const(const char *path);
772 int mkdir_in_gitdir(const char *path);
773 extern void home_config_paths(char **global, char **xdg, char *file);
774 extern char *expand_user_path(const char *path);
775 const char *enter_repo(const char *path, int strict);
776 static inline int is_absolute_path(const char *path)
778 return is_dir_sep(path[0]) || has_dos_drive_prefix(path);
780 int is_directory(const char *);
781 const char *real_path(const char *path);
782 const char *real_path_if_valid(const char *path);
783 const char *absolute_path(const char *path);
784 const char *remove_leading_path(const char *in, const char *prefix);
785 const char *relative_path(const char *in, const char *prefix, struct strbuf *sb);
786 int normalize_path_copy_len(char *dst, const char *src, int *prefix_len);
787 int normalize_path_copy(char *dst, const char *src);
788 int longest_ancestor_length(const char *path, struct string_list *prefixes);
789 char *strip_path_suffix(const char *path, const char *suffix);
790 int daemon_avoid_alias(const char *path);
791 int offset_1st_component(const char *path);
793 /* object replacement */
794 #define LOOKUP_REPLACE_OBJECT 1
795 extern void *read_sha1_file_extended(const unsigned char *sha1, enum object_type *type, unsigned long *size, unsigned flag);
796 static inline void *read_sha1_file(const unsigned char *sha1, enum object_type *type, unsigned long *size)
798 return read_sha1_file_extended(sha1, type, size, LOOKUP_REPLACE_OBJECT);
800 extern const unsigned char *do_lookup_replace_object(const unsigned char *sha1);
801 static inline const unsigned char *lookup_replace_object(const unsigned char *sha1)
803 if (!read_replace_refs)
804 return sha1;
805 return do_lookup_replace_object(sha1);
807 static inline const unsigned char *lookup_replace_object_extended(const unsigned char *sha1, unsigned flag)
809 if (!(flag & LOOKUP_REPLACE_OBJECT))
810 return sha1;
811 return lookup_replace_object(sha1);
814 /* Read and unpack a sha1 file into memory, write memory to a sha1 file */
815 extern int sha1_object_info(const unsigned char *, unsigned long *);
816 extern int hash_sha1_file(const void *buf, unsigned long len, const char *type, unsigned char *sha1);
817 extern int write_sha1_file(const void *buf, unsigned long len, const char *type, unsigned char *return_sha1);
818 extern int pretend_sha1_file(void *, unsigned long, enum object_type, unsigned char *);
819 extern int force_object_loose(const unsigned char *sha1, time_t mtime);
820 extern void *map_sha1_file(const unsigned char *sha1, unsigned long *size);
821 extern int unpack_sha1_header(git_zstream *stream, unsigned char *map, unsigned long mapsize, void *buffer, unsigned long bufsiz);
822 extern int parse_sha1_header(const char *hdr, unsigned long *sizep);
824 /* global flag to enable extra checks when accessing packed objects */
825 extern int do_check_packed_object_crc;
827 extern int check_sha1_signature(const unsigned char *sha1, void *buf, unsigned long size, const char *type);
829 extern int move_temp_to_file(const char *tmpfile, const char *filename);
831 extern int has_sha1_pack(const unsigned char *sha1);
832 extern int has_sha1_file(const unsigned char *sha1);
833 extern int has_loose_object_nonlocal(const unsigned char *sha1);
835 extern int has_pack_index(const unsigned char *sha1);
837 extern void assert_sha1_type(const unsigned char *sha1, enum object_type expect);
839 extern const signed char hexval_table[256];
840 static inline unsigned int hexval(unsigned char c)
842 return hexval_table[c];
845 /* Convert to/from hex/sha1 representation */
846 #define MINIMUM_ABBREV minimum_abbrev
847 #define DEFAULT_ABBREV default_abbrev
849 struct object_context {
850 unsigned char tree[20];
851 char path[PATH_MAX];
852 unsigned mode;
855 #define GET_SHA1_QUIETLY 01
856 #define GET_SHA1_COMMIT 02
857 #define GET_SHA1_COMMITTISH 04
858 #define GET_SHA1_TREE 010
859 #define GET_SHA1_TREEISH 020
860 #define GET_SHA1_BLOB 040
861 #define GET_SHA1_ONLY_TO_DIE 04000
863 extern int get_sha1(const char *str, unsigned char *sha1);
864 extern int get_sha1_commit(const char *str, unsigned char *sha1);
865 extern int get_sha1_committish(const char *str, unsigned char *sha1);
866 extern int get_sha1_tree(const char *str, unsigned char *sha1);
867 extern int get_sha1_treeish(const char *str, unsigned char *sha1);
868 extern int get_sha1_blob(const char *str, unsigned char *sha1);
869 extern void maybe_die_on_misspelt_object_name(const char *name, const char *prefix);
870 extern int get_sha1_with_context(const char *str, unsigned flags, unsigned char *sha1, struct object_context *orc);
872 typedef int each_abbrev_fn(const unsigned char *sha1, void *);
873 extern int for_each_abbrev(const char *prefix, each_abbrev_fn, void *);
876 * Try to read a SHA1 in hexadecimal format from the 40 characters
877 * starting at hex. Write the 20-byte result to sha1 in binary form.
878 * Return 0 on success. Reading stops if a NUL is encountered in the
879 * input, so it is safe to pass this function an arbitrary
880 * null-terminated string.
882 extern int get_sha1_hex(const char *hex, unsigned char *sha1);
884 extern char *sha1_to_hex(const unsigned char *sha1); /* static buffer result! */
885 extern int read_ref_full(const char *refname, unsigned char *sha1,
886 int reading, int *flags);
887 extern int read_ref(const char *refname, unsigned char *sha1);
890 * Resolve a reference, recursively following symbolic refererences.
892 * Store the referred-to object's name in sha1 and return the name of
893 * the non-symbolic reference that ultimately pointed at it. The
894 * return value, if not NULL, is a pointer into either a static buffer
895 * or the input ref.
897 * If the reference cannot be resolved to an object, the behavior
898 * depends on the "reading" argument:
900 * - If reading is set, return NULL.
902 * - If reading is not set, clear sha1 and return the name of the last
903 * reference name in the chain, which will either be a non-symbolic
904 * reference or an undefined reference. If this is a prelude to
905 * "writing" to the ref, the return value is the name of the ref
906 * that will actually be created or changed.
908 * If flag is non-NULL, set the value that it points to the
909 * combination of REF_ISPACKED (if the reference was found among the
910 * packed references) and REF_ISSYMREF (if the initial reference was a
911 * symbolic reference).
913 * If ref is not a properly-formatted, normalized reference, return
914 * NULL. If more than MAXDEPTH recursive symbolic lookups are needed,
915 * give up and return NULL.
917 * errno is sometimes set on errors, but not always.
919 extern const char *resolve_ref_unsafe(const char *ref, unsigned char *sha1, int reading, int *flag);
920 extern char *resolve_refdup(const char *ref, unsigned char *sha1, int reading, int *flag);
922 extern int dwim_ref(const char *str, int len, unsigned char *sha1, char **ref);
923 extern int dwim_log(const char *str, int len, unsigned char *sha1, char **ref);
924 extern int interpret_branch_name(const char *str, int len, struct strbuf *);
925 extern int get_sha1_mb(const char *str, unsigned char *sha1);
928 * Return true iff abbrev_name is a possible abbreviation for
929 * full_name according to the rules defined by ref_rev_parse_rules in
930 * refs.c.
932 extern int refname_match(const char *abbrev_name, const char *full_name);
934 extern int create_symref(const char *ref, const char *refs_heads_master, const char *logmsg);
935 extern int validate_headref(const char *ref);
937 extern int base_name_compare(const char *name1, int len1, int mode1, const char *name2, int len2, int mode2);
938 extern int df_name_compare(const char *name1, int len1, int mode1, const char *name2, int len2, int mode2);
939 extern int cache_name_compare(const char *name1, int len1, const char *name2, int len2);
940 extern int cache_name_stage_compare(const char *name1, int len1, int stage1, const char *name2, int len2, int stage2);
942 extern void *read_object_with_reference(const unsigned char *sha1,
943 const char *required_type,
944 unsigned long *size,
945 unsigned char *sha1_ret);
947 extern struct object *peel_to_type(const char *name, int namelen,
948 struct object *o, enum object_type);
950 enum date_mode {
951 DATE_NORMAL = 0,
952 DATE_RELATIVE,
953 DATE_SHORT,
954 DATE_LOCAL,
955 DATE_ISO8601,
956 DATE_RFC2822,
957 DATE_RAW
960 const char *show_date(unsigned long time, int timezone, enum date_mode mode);
961 void show_date_relative(unsigned long time, int tz, const struct timeval *now,
962 struct strbuf *timebuf);
963 int parse_date(const char *date, char *buf, int bufsize);
964 int parse_date_basic(const char *date, unsigned long *timestamp, int *offset);
965 int parse_expiry_date(const char *date, unsigned long *timestamp);
966 void datestamp(char *buf, int bufsize);
967 #define approxidate(s) approxidate_careful((s), NULL)
968 unsigned long approxidate_careful(const char *, int *);
969 unsigned long approxidate_relative(const char *date, const struct timeval *now);
970 enum date_mode parse_date_format(const char *format);
971 int date_overflows(unsigned long date);
973 #define IDENT_STRICT 1
974 #define IDENT_NO_DATE 2
975 #define IDENT_NO_NAME 4
976 extern const char *git_author_info(int);
977 extern const char *git_committer_info(int);
978 extern const char *fmt_ident(const char *name, const char *email, const char *date_str, int);
979 extern const char *fmt_name(const char *name, const char *email);
980 extern const char *ident_default_email(void);
981 extern const char *git_editor(void);
982 extern const char *git_pager(int stdout_is_tty);
983 extern int git_ident_config(const char *, const char *, void *);
985 struct ident_split {
986 const char *name_begin;
987 const char *name_end;
988 const char *mail_begin;
989 const char *mail_end;
990 const char *date_begin;
991 const char *date_end;
992 const char *tz_begin;
993 const char *tz_end;
996 * Signals an success with 0, but time part of the result may be NULL
997 * if the input lacks timestamp and zone
999 extern int split_ident_line(struct ident_split *, const char *, int);
1002 * Compare split idents for equality or strict ordering. Note that we
1003 * compare only the ident part of the line, ignoring any timestamp.
1005 * Because there are two fields, we must choose one as the primary key; we
1006 * currently arbitrarily pick the email.
1008 extern int ident_cmp(const struct ident_split *, const struct ident_split *);
1010 struct checkout {
1011 const char *base_dir;
1012 int base_dir_len;
1013 unsigned force:1,
1014 quiet:1,
1015 not_new:1,
1016 refresh_cache:1;
1019 #define TEMPORARY_FILENAME_LENGTH 25
1020 extern int checkout_entry(struct cache_entry *ce, const struct checkout *state, char *topath);
1022 struct cache_def {
1023 char path[PATH_MAX + 1];
1024 int len;
1025 int flags;
1026 int track_flags;
1027 int prefix_len_stat_func;
1030 extern int has_symlink_leading_path(const char *name, int len);
1031 extern int threaded_has_symlink_leading_path(struct cache_def *, const char *, int);
1032 extern int check_leading_path(const char *name, int len);
1033 extern int has_dirs_only_path(const char *name, int len, int prefix_len);
1034 extern void schedule_dir_for_removal(const char *name, int len);
1035 extern void remove_scheduled_dirs(void);
1037 extern struct alternate_object_database {
1038 struct alternate_object_database *next;
1039 char *name;
1040 char base[FLEX_ARRAY]; /* more */
1041 } *alt_odb_list;
1042 extern void prepare_alt_odb(void);
1043 extern void read_info_alternates(const char * relative_base, int depth);
1044 extern void add_to_alternates_file(const char *reference);
1045 typedef int alt_odb_fn(struct alternate_object_database *, void *);
1046 extern void foreach_alt_odb(alt_odb_fn, void*);
1048 struct pack_window {
1049 struct pack_window *next;
1050 unsigned char *base;
1051 off_t offset;
1052 size_t len;
1053 unsigned int last_used;
1054 unsigned int inuse_cnt;
1057 extern struct packed_git {
1058 struct packed_git *next;
1059 struct pack_window *windows;
1060 off_t pack_size;
1061 const void *index_data;
1062 size_t index_size;
1063 uint32_t num_objects;
1064 uint32_t num_bad_objects;
1065 unsigned char *bad_object_sha1;
1066 int index_version;
1067 time_t mtime;
1068 int pack_fd;
1069 unsigned pack_local:1,
1070 pack_keep:1,
1071 do_not_close:1;
1072 unsigned char sha1[20];
1073 /* something like ".git/objects/pack/xxxxx.pack" */
1074 char pack_name[FLEX_ARRAY]; /* more */
1075 } *packed_git;
1077 struct pack_entry {
1078 off_t offset;
1079 unsigned char sha1[20];
1080 struct packed_git *p;
1083 extern struct packed_git *parse_pack_index(unsigned char *sha1, const char *idx_path);
1085 /* A hook for count-objects to report invalid files in pack directory */
1086 extern void (*report_garbage)(const char *desc, const char *path);
1088 extern void prepare_packed_git(void);
1089 extern void reprepare_packed_git(void);
1090 extern void install_packed_git(struct packed_git *pack);
1092 extern struct packed_git *find_sha1_pack(const unsigned char *sha1,
1093 struct packed_git *packs);
1095 extern void pack_report(void);
1096 extern int open_pack_index(struct packed_git *);
1097 extern void close_pack_index(struct packed_git *);
1098 extern unsigned char *use_pack(struct packed_git *, struct pack_window **, off_t, unsigned long *);
1099 extern void close_pack_windows(struct packed_git *);
1100 extern void unuse_pack(struct pack_window **);
1101 extern void free_pack_by_name(const char *);
1102 extern void clear_delta_base_cache(void);
1103 extern struct packed_git *add_packed_git(const char *, int, int);
1104 extern const unsigned char *nth_packed_object_sha1(struct packed_git *, uint32_t);
1105 extern off_t nth_packed_object_offset(const struct packed_git *, uint32_t);
1106 extern off_t find_pack_entry_one(const unsigned char *, struct packed_git *);
1107 extern int is_pack_valid(struct packed_git *);
1108 extern void *unpack_entry(struct packed_git *, off_t, enum object_type *, unsigned long *);
1109 extern unsigned long unpack_object_header_buffer(const unsigned char *buf, unsigned long len, enum object_type *type, unsigned long *sizep);
1110 extern unsigned long get_size_from_delta(struct packed_git *, struct pack_window **, off_t);
1111 extern int unpack_object_header(struct packed_git *, struct pack_window **, off_t *, unsigned long *);
1113 struct object_info {
1114 /* Request */
1115 enum object_type *typep;
1116 unsigned long *sizep;
1117 unsigned long *disk_sizep;
1118 unsigned char *delta_base_sha1;
1120 /* Response */
1121 enum {
1122 OI_CACHED,
1123 OI_LOOSE,
1124 OI_PACKED,
1125 OI_DBCACHED
1126 } whence;
1127 union {
1129 * struct {
1130 * ... Nothing to expose in this case
1131 * } cached;
1132 * struct {
1133 * ... Nothing to expose in this case
1134 * } loose;
1136 struct {
1137 struct packed_git *pack;
1138 off_t offset;
1139 unsigned int is_delta;
1140 } packed;
1141 } u;
1143 extern int sha1_object_info_extended(const unsigned char *, struct object_info *, unsigned flags);
1145 /* Dumb servers support */
1146 extern int update_server_info(int);
1148 /* git_config_parse_key() returns these negated: */
1149 #define CONFIG_INVALID_KEY 1
1150 #define CONFIG_NO_SECTION_OR_NAME 2
1151 /* git_config_set(), git_config_set_multivar() return the above or these: */
1152 #define CONFIG_NO_LOCK -1
1153 #define CONFIG_INVALID_FILE 3
1154 #define CONFIG_NO_WRITE 4
1155 #define CONFIG_NOTHING_SET 5
1156 #define CONFIG_INVALID_PATTERN 6
1157 #define CONFIG_GENERIC_ERROR 7
1159 typedef int (*config_fn_t)(const char *, const char *, void *);
1160 extern int git_default_config(const char *, const char *, void *);
1161 extern int git_config_from_file(config_fn_t fn, const char *, void *);
1162 extern int git_config_from_buf(config_fn_t fn, const char *name,
1163 const char *buf, size_t len, void *data);
1164 extern void git_config_push_parameter(const char *text);
1165 extern int git_config_from_parameters(config_fn_t fn, void *data);
1166 extern int git_config(config_fn_t fn, void *);
1167 extern int git_config_with_options(config_fn_t fn, void *,
1168 const char *filename,
1169 const char *blob_ref,
1170 int respect_includes);
1171 extern int git_config_early(config_fn_t fn, void *, const char *repo_config);
1172 extern int git_parse_ulong(const char *, unsigned long *);
1173 extern int git_config_int(const char *, const char *);
1174 extern int64_t git_config_int64(const char *, const char *);
1175 extern unsigned long git_config_ulong(const char *, const char *);
1176 extern int git_config_bool_or_int(const char *, const char *, int *);
1177 extern int git_config_bool(const char *, const char *);
1178 extern int git_config_maybe_bool(const char *, const char *);
1179 extern int git_config_string(const char **, const char *, const char *);
1180 extern int git_config_pathname(const char **, const char *, const char *);
1181 extern int git_config_set_in_file(const char *, const char *, const char *);
1182 extern int git_config_set(const char *, const char *);
1183 extern int git_config_parse_key(const char *, char **, int *);
1184 extern int git_config_set_multivar(const char *, const char *, const char *, int);
1185 extern int git_config_set_multivar_in_file(const char *, const char *, const char *, const char *, int);
1186 extern int git_config_rename_section(const char *, const char *);
1187 extern int git_config_rename_section_in_file(const char *, const char *, const char *);
1188 extern const char *git_etc_gitconfig(void);
1189 extern int check_repository_format_version(const char *var, const char *value, void *cb);
1190 extern int git_env_bool(const char *, int);
1191 extern int git_config_system(void);
1192 extern int config_error_nonbool(const char *);
1193 #if defined(__GNUC__) && ! defined(__clang__)
1194 #define config_error_nonbool(s) (config_error_nonbool(s), -1)
1195 #endif
1196 extern const char *get_log_output_encoding(void);
1197 extern const char *get_commit_output_encoding(void);
1199 extern int git_config_parse_parameter(const char *, config_fn_t fn, void *data);
1201 struct config_include_data {
1202 int depth;
1203 config_fn_t fn;
1204 void *data;
1206 #define CONFIG_INCLUDE_INIT { 0 }
1207 extern int git_config_include(const char *name, const char *value, void *data);
1210 * Match and parse a config key of the form:
1212 * section.(subsection.)?key
1214 * (i.e., what gets handed to a config_fn_t). The caller provides the section;
1215 * we return -1 if it does not match, 0 otherwise. The subsection and key
1216 * out-parameters are filled by the function (and subsection is NULL if it is
1217 * missing).
1219 extern int parse_config_key(const char *var,
1220 const char *section,
1221 const char **subsection, int *subsection_len,
1222 const char **key);
1224 extern int committer_ident_sufficiently_given(void);
1225 extern int author_ident_sufficiently_given(void);
1227 extern const char *git_commit_encoding;
1228 extern const char *git_log_output_encoding;
1229 extern const char *git_mailmap_file;
1230 extern const char *git_mailmap_blob;
1232 /* IO helper functions */
1233 extern void maybe_flush_or_die(FILE *, const char *);
1234 extern int copy_fd(int ifd, int ofd);
1235 extern int copy_file(const char *dst, const char *src, int mode);
1236 extern int copy_file_with_time(const char *dst, const char *src, int mode);
1237 extern void write_or_die(int fd, const void *buf, size_t count);
1238 extern int write_or_whine(int fd, const void *buf, size_t count, const char *msg);
1239 extern int write_or_whine_pipe(int fd, const void *buf, size_t count, const char *msg);
1240 extern void fsync_or_die(int fd, const char *);
1242 extern ssize_t read_in_full(int fd, void *buf, size_t count);
1243 extern ssize_t write_in_full(int fd, const void *buf, size_t count);
1244 static inline ssize_t write_str_in_full(int fd, const char *str)
1246 return write_in_full(fd, str, strlen(str));
1249 /* pager.c */
1250 extern void setup_pager(void);
1251 extern const char *pager_program;
1252 extern int pager_in_use(void);
1253 extern int pager_use_color;
1254 extern int term_columns(void);
1255 extern int decimal_width(int);
1256 extern int check_pager_config(const char *cmd);
1258 extern const char *editor_program;
1259 extern const char *askpass_program;
1260 extern const char *excludes_file;
1262 /* base85 */
1263 int decode_85(char *dst, const char *line, int linelen);
1264 void encode_85(char *buf, const unsigned char *data, int bytes);
1266 /* alloc.c */
1267 extern void *alloc_blob_node(void);
1268 extern void *alloc_tree_node(void);
1269 extern void *alloc_commit_node(void);
1270 extern void *alloc_tag_node(void);
1271 extern void *alloc_object_node(void);
1272 extern void alloc_report(void);
1274 /* trace.c */
1275 __attribute__((format (printf, 1, 2)))
1276 extern void trace_printf(const char *format, ...);
1277 __attribute__((format (printf, 2, 3)))
1278 extern void trace_argv_printf(const char **argv, const char *format, ...);
1279 extern void trace_repo_setup(const char *prefix);
1280 extern int trace_want(const char *key);
1281 __attribute__((format (printf, 2, 3)))
1282 extern void trace_printf_key(const char *key, const char *fmt, ...);
1283 extern void trace_strbuf(const char *key, const struct strbuf *buf);
1285 void packet_trace_identity(const char *prog);
1287 /* add */
1289 * return 0 if success, 1 - if addition of a file failed and
1290 * ADD_FILES_IGNORE_ERRORS was specified in flags
1292 int add_files_to_cache(const char *prefix, const struct pathspec *pathspec, int flags);
1294 /* diff.c */
1295 extern int diff_auto_refresh_index;
1297 /* match-trees.c */
1298 void shift_tree(const unsigned char *, const unsigned char *, unsigned char *, int);
1299 void shift_tree_by(const unsigned char *, const unsigned char *, unsigned char *, const char *);
1302 * whitespace rules.
1303 * used by both diff and apply
1304 * last two digits are tab width
1306 #define WS_BLANK_AT_EOL 0100
1307 #define WS_SPACE_BEFORE_TAB 0200
1308 #define WS_INDENT_WITH_NON_TAB 0400
1309 #define WS_CR_AT_EOL 01000
1310 #define WS_BLANK_AT_EOF 02000
1311 #define WS_TAB_IN_INDENT 04000
1312 #define WS_TRAILING_SPACE (WS_BLANK_AT_EOL|WS_BLANK_AT_EOF)
1313 #define WS_DEFAULT_RULE (WS_TRAILING_SPACE|WS_SPACE_BEFORE_TAB|8)
1314 #define WS_TAB_WIDTH_MASK 077
1315 extern unsigned whitespace_rule_cfg;
1316 extern unsigned whitespace_rule(const char *);
1317 extern unsigned parse_whitespace_rule(const char *);
1318 extern unsigned ws_check(const char *line, int len, unsigned ws_rule);
1319 extern void ws_check_emit(const char *line, int len, unsigned ws_rule, FILE *stream, const char *set, const char *reset, const char *ws);
1320 extern char *whitespace_error_string(unsigned ws);
1321 extern void ws_fix_copy(struct strbuf *, const char *, int, unsigned, int *);
1322 extern int ws_blank_line(const char *line, int len, unsigned ws_rule);
1323 #define ws_tab_width(rule) ((rule) & WS_TAB_WIDTH_MASK)
1325 /* ls-files */
1326 int report_path_error(const char *ps_matched, const struct pathspec *pathspec, const char *prefix);
1327 void overlay_tree_on_cache(const char *tree_name, const char *prefix);
1329 char *alias_lookup(const char *alias);
1330 int split_cmdline(char *cmdline, const char ***argv);
1331 /* Takes a negative value returned by split_cmdline */
1332 const char *split_cmdline_strerror(int cmdline_errno);
1334 /* git.c */
1335 struct startup_info {
1336 int have_repository;
1337 const char *prefix;
1339 extern struct startup_info *startup_info;
1341 /* merge.c */
1342 struct commit_list;
1343 int try_merge_command(const char *strategy, size_t xopts_nr,
1344 const char **xopts, struct commit_list *common,
1345 const char *head_arg, struct commit_list *remotes);
1346 int checkout_fast_forward(const unsigned char *from,
1347 const unsigned char *to,
1348 int overwrite_ignore);
1351 int sane_execvp(const char *file, char *const argv[]);
1354 * A struct to encapsulate the concept of whether a file has changed
1355 * since we last checked it. This uses criteria similar to those used
1356 * for the index.
1358 struct stat_validity {
1359 struct stat_data *sd;
1362 void stat_validity_clear(struct stat_validity *sv);
1365 * Returns 1 if the path is a regular file (or a symlink to a regular
1366 * file) and matches the saved stat_validity, 0 otherwise. A missing
1367 * or inaccessible file is considered a match if the struct was just
1368 * initialized, or if the previous update found an inaccessible file.
1370 int stat_validity_check(struct stat_validity *sv, const char *path);
1373 * Update the stat_validity from a file opened at descriptor fd. If
1374 * the file is missing, inaccessible, or not a regular file, then
1375 * future calls to stat_validity_check will match iff one of those
1376 * conditions continues to be true.
1378 void stat_validity_update(struct stat_validity *sv, int fd);
1380 #endif /* CACHE_H */