zlib: wrap deflateBound() too
[git/git.git] / cache.h
CommitLineData
e83c5163
LT
1#ifndef CACHE_H
2#define CACHE_H
3
4050c0df 4#include "git-compat-util.h"
5ecd293d 5#include "strbuf.h"
cf558704 6#include "hash.h"
75194438 7#include "advice.h"
65784830 8#include "gettext.h"
e83c5163 9
cef661fc 10#include SHA1_HEADER
9126f009
NP
11#ifndef git_SHA_CTX
12#define git_SHA_CTX SHA_CTX
13#define git_SHA1_Init SHA1_Init
14#define git_SHA1_Update SHA1_Update
15#define git_SHA1_Final SHA1_Final
16#endif
e83c5163 17
9126f009 18#include <zlib.h>
9da3acfb 19
39c68542 20void git_inflate_init(z_streamp strm);
5e86c1fb 21void git_inflate_init_gzip_only(z_streamp strm);
39c68542
LT
22void git_inflate_end(z_streamp strm);
23int git_inflate(z_streamp strm, int flush);
24
55bb5c91
JH
25void git_deflate_init(z_streamp strm, int level);
26void git_deflate_init_gzip(z_streamp strm, int level);
27void git_deflate_end(z_streamp strm);
28int git_deflate_end_gently(z_streamp strm);
29int git_deflate(z_streamp strm, int flush);
225a6f10 30unsigned long git_deflate_bound(z_streamp, unsigned long);
55bb5c91 31
962554c6 32#if defined(DT_UNKNOWN) && !defined(NO_D_TYPE_IN_DIRENT)
b6829693
ET
33#define DTYPE(de) ((de)->d_type)
34#else
0bdd79af
JH
35#undef DT_UNKNOWN
36#undef DT_DIR
37#undef DT_REG
38#undef DT_LNK
b6829693
ET
39#define DT_UNKNOWN 0
40#define DT_DIR 1
41#define DT_REG 2
a15c1c60 42#define DT_LNK 3
b6829693
ET
43#define DTYPE(de) DT_UNKNOWN
44#endif
45
40689ae1
MK
46/* unknown mode (impossible combination S_IFIFO|S_IFCHR) */
47#define S_IFINVALID 0030000
48
9eec4795
LT
49/*
50 * A "directory link" is a link to another git directory.
51 *
52 * The value 0160000 is not normally a valid mode, and
53 * also just happens to be S_IFDIR + S_IFLNK
54 *
55 * NOTE! We *really* shouldn't depend on the S_IFxxx macros
56 * always having the same values everywhere. We should use
57 * our internal git values for these things, and then we can
58 * translate that to the OS-specific value. It just so
59 * happens that everybody shares the same bit representation
60 * in the UNIX world (and apparently wider too..)
61 */
302b9282
MW
62#define S_IFGITLINK 0160000
63#define S_ISGITLINK(m) (((m) & S_IFMT) == S_IFGITLINK)
9eec4795 64
2386d658
LT
65/*
66 * Intensive research over the course of many years has shown that
67 * port 9418 is totally unused by anything else. Or
68 *
69 * Your search - "port 9418" - did not match any documents.
70 *
71 * as www.google.com puts it.
ba8a4970
LT
72 *
73 * This port has been properly assigned for git use by IANA:
74 * git (Assigned-9418) [I06-050728-0001].
75 *
76 * git 9418/tcp git pack transfer service
77 * git 9418/udp git pack transfer service
78 *
79 * with Linus Torvalds <torvalds@osdl.org> as the point of
80 * contact. September 2005.
81 *
82 * See http://www.iana.org/assignments/port-numbers
2386d658
LT
83 */
84#define DEFAULT_GIT_PORT 9418
85
e83c5163
LT
86/*
87 * Basic data structures for the directory cache
e83c5163
LT
88 */
89
90#define CACHE_SIGNATURE 0x44495243 /* "DIRC" */
91struct cache_header {
ccc4feb5
LT
92 unsigned int hdr_signature;
93 unsigned int hdr_version;
94 unsigned int hdr_entries;
e83c5163
LT
95};
96
97/*
98 * The "cache_time" is just the low 32 bits of the
99 * time. It doesn't matter if it overflows - we only
100 * check it for equality in the 32 bits we save.
101 */
102struct cache_time {
103 unsigned int sec;
104 unsigned int nsec;
105};
106
107/*
108 * dev/ino/uid/gid/size are also just tracked to the low 32 bits
109 * Again - this is just a (very strong in practice) heuristic that
110 * the inode hasn't changed.
ccc4feb5
LT
111 *
112 * We save the fields in big-endian order to allow using the
113 * index file over NFS transparently.
e83c5163 114 */
7a51ed66
LT
115struct ondisk_cache_entry {
116 struct cache_time ctime;
117 struct cache_time mtime;
118 unsigned int dev;
119 unsigned int ino;
120 unsigned int mode;
121 unsigned int uid;
122 unsigned int gid;
123 unsigned int size;
124 unsigned char sha1[20];
125 unsigned short flags;
126 char name[FLEX_ARRAY]; /* more */
127};
128
06aaaa0b
NTND
129/*
130 * This struct is used when CE_EXTENDED bit is 1
131 * The struct must match ondisk_cache_entry exactly from
132 * ctime till flags
133 */
134struct ondisk_cache_entry_extended {
135 struct cache_time ctime;
136 struct cache_time mtime;
137 unsigned int dev;
138 unsigned int ino;
139 unsigned int mode;
140 unsigned int uid;
141 unsigned int gid;
142 unsigned int size;
143 unsigned char sha1[20];
144 unsigned short flags;
145 unsigned short flags2;
146 char name[FLEX_ARRAY]; /* more */
147};
148
e83c5163 149struct cache_entry {
fba2f38a
KB
150 struct cache_time ce_ctime;
151 struct cache_time ce_mtime;
ccc4feb5
LT
152 unsigned int ce_dev;
153 unsigned int ce_ino;
154 unsigned int ce_mode;
155 unsigned int ce_uid;
156 unsigned int ce_gid;
157 unsigned int ce_size;
7a51ed66 158 unsigned int ce_flags;
e83c5163 159 unsigned char sha1[20];
eb7a2f1d 160 struct cache_entry *next;
8f1d2e6f 161 char name[FLEX_ARRAY]; /* more */
e83c5163
LT
162};
163
95fd5bf8
LT
164#define CE_NAMEMASK (0x0fff)
165#define CE_STAGEMASK (0x3000)
16ce2e4c 166#define CE_EXTENDED (0x4000)
5f73076c 167#define CE_VALID (0x8000)
aee46198 168#define CE_STAGESHIFT 12
95fd5bf8 169
06aaaa0b
NTND
170/*
171 * Range 0xFFFF0000 in ce_flags is divided into
172 * two parts: in-memory flags and on-disk ones.
173 * Flags in CE_EXTENDED_FLAGS will get saved on-disk
174 * if you want to save a new flag, add it in
175 * CE_EXTENDED_FLAGS
176 *
177 * In-memory only flags
178 */
2977ffbb
NTND
179#define CE_UPDATE (1 << 16)
180#define CE_REMOVE (1 << 17)
181#define CE_UPTODATE (1 << 18)
182#define CE_ADDED (1 << 19)
a22c6371 183
2977ffbb
NTND
184#define CE_HASHED (1 << 20)
185#define CE_UNHASHED (1 << 21)
186#define CE_WT_REMOVE (1 << 22) /* remove in work directory */
187#define CE_CONFLICTED (1 << 23)
7a51ed66 188
2977ffbb 189#define CE_UNPACKED (1 << 24)
2431afbf 190#define CE_NEW_SKIP_WORKTREE (1 << 25)
da165f47 191
06aaaa0b
NTND
192/*
193 * Extended on-disk flags
194 */
2977ffbb
NTND
195#define CE_INTENT_TO_ADD (1 << 29)
196#define CE_SKIP_WORKTREE (1 << 30)
06aaaa0b 197/* CE_EXTENDED2 is for future extension */
2977ffbb 198#define CE_EXTENDED2 (1 << 31)
06aaaa0b 199
44a36913 200#define CE_EXTENDED_FLAGS (CE_INTENT_TO_ADD | CE_SKIP_WORKTREE)
06aaaa0b
NTND
201
202/*
203 * Safeguard to avoid saving wrong flags:
204 * - CE_EXTENDED2 won't get saved until its semantic is known
205 * - Bits in 0x0000FFFF have been saved in ce_flags already
206 * - Bits in 0x003F0000 are currently in-memory flags
207 */
208#if CE_EXTENDED_FLAGS & 0x803FFFFF
209#error "CE_EXTENDED_FLAGS out of range"
210#endif
211
eb7a2f1d
LT
212/*
213 * Copy the sha1 and stat state of a cache entry from one to
214 * another. But we never change the name, or the hash state!
215 */
216#define CE_STATE_MASK (CE_HASHED | CE_UNHASHED)
217static inline void copy_cache_entry(struct cache_entry *dst, struct cache_entry *src)
218{
219 unsigned int state = dst->ce_flags & CE_STATE_MASK;
220
221 /* Don't copy hash chain and name */
222 memcpy(dst, src, offsetof(struct cache_entry, next));
223
224 /* Restore the hash state */
225 dst->ce_flags = (dst->ce_flags & ~CE_STATE_MASK) | state;
226}
227
7fec10b7
JH
228static inline unsigned create_ce_flags(size_t len, unsigned stage)
229{
230 if (len >= CE_NAMEMASK)
231 len = CE_NAMEMASK;
232 return (len | (stage << CE_STAGESHIFT));
233}
234
235static inline size_t ce_namelen(const struct cache_entry *ce)
236{
237 size_t len = ce->ce_flags & CE_NAMEMASK;
238 if (len < CE_NAMEMASK)
239 return len;
240 return strlen(ce->name + CE_NAMEMASK) + CE_NAMEMASK;
241}
242
aee46198 243#define ce_size(ce) cache_entry_size(ce_namelen(ce))
06aaaa0b
NTND
244#define ondisk_ce_size(ce) (((ce)->ce_flags & CE_EXTENDED) ? \
245 ondisk_cache_entry_extended_size(ce_namelen(ce)) : \
246 ondisk_cache_entry_size(ce_namelen(ce)))
7a51ed66 247#define ce_stage(ce) ((CE_STAGEMASK & (ce)->ce_flags) >> CE_STAGESHIFT)
eadb5831 248#define ce_uptodate(ce) ((ce)->ce_flags & CE_UPTODATE)
44a36913 249#define ce_skip_worktree(ce) ((ce)->ce_flags & CE_SKIP_WORKTREE)
eadb5831 250#define ce_mark_uptodate(ce) ((ce)->ce_flags |= CE_UPTODATE)
aee46198 251
e4479470 252#define ce_permissions(mode) (((mode) & 0100) ? 0755 : 0644)
8ae0a8c5
KS
253static inline unsigned int create_ce_mode(unsigned int mode)
254{
8ae0a8c5 255 if (S_ISLNK(mode))
7a51ed66 256 return S_IFLNK;
302b9282 257 if (S_ISDIR(mode) || S_ISGITLINK(mode))
7a51ed66
LT
258 return S_IFGITLINK;
259 return S_IFREG | ce_permissions(mode);
8ae0a8c5 260}
185c975f
JH
261static inline unsigned int ce_mode_from_stat(struct cache_entry *ce, unsigned int mode)
262{
78a8d641
JS
263 extern int trust_executable_bit, has_symlinks;
264 if (!has_symlinks && S_ISREG(mode) &&
7a51ed66 265 ce && S_ISLNK(ce->ce_mode))
78a8d641 266 return ce->ce_mode;
185c975f 267 if (!trust_executable_bit && S_ISREG(mode)) {
7a51ed66 268 if (ce && S_ISREG(ce->ce_mode))
185c975f
JH
269 return ce->ce_mode;
270 return create_ce_mode(0666);
271 }
272 return create_ce_mode(mode);
273}
d6b8fc30
JH
274static inline int ce_to_dtype(const struct cache_entry *ce)
275{
276 unsigned ce_mode = ntohl(ce->ce_mode);
277 if (S_ISREG(ce_mode))
278 return DT_REG;
279 else if (S_ISDIR(ce_mode) || S_ISGITLINK(ce_mode))
280 return DT_DIR;
281 else if (S_ISLNK(ce_mode))
282 return DT_LNK;
283 else
284 return DT_UNKNOWN;
285}
b90d9b88
RS
286static inline unsigned int canon_mode(unsigned int mode)
287{
288 if (S_ISREG(mode))
289 return S_IFREG | ce_permissions(mode);
290 if (S_ISLNK(mode))
291 return S_IFLNK;
292 if (S_ISDIR(mode))
293 return S_IFDIR;
294 return S_IFGITLINK;
295}
e4479470 296
06aaaa0b
NTND
297#define flexible_size(STRUCT,len) ((offsetof(struct STRUCT,name) + (len) + 8) & ~7)
298#define cache_entry_size(len) flexible_size(cache_entry,len)
299#define ondisk_cache_entry_size(len) flexible_size(ondisk_cache_entry,len)
300#define ondisk_cache_entry_extended_size(len) flexible_size(ondisk_cache_entry_extended,len)
f5cabd13 301
228e94f9
JH
302struct index_state {
303 struct cache_entry **cache;
304 unsigned int cache_nr, cache_alloc, cache_changed;
cfc5789a 305 struct string_list *resolve_undo;
228e94f9 306 struct cache_tree *cache_tree;
fba2f38a 307 struct cache_time timestamp;
7a51ed66 308 void *alloc;
913e0e99
JH
309 unsigned name_hash_initialized : 1,
310 initialized : 1;
cf558704 311 struct hash_table name_hash;
228e94f9
JH
312};
313
314extern struct index_state the_index;
315
96872bc2
LT
316/* Name hashing */
317extern void add_name_hash(struct index_state *istate, struct cache_entry *ce);
318/*
319 * We don't actually *remove* it, we can just mark it invalid so that
320 * we won't find it in lookups.
321 *
322 * Not only would we have to search the lists (simple enough), but
323 * we'd also have to rehash other hash buckets in case this makes the
324 * hash bucket empty (common). So it's much better to just mark
325 * it.
326 */
327static inline void remove_name_hash(struct cache_entry *ce)
328{
329 ce->ce_flags |= CE_UNHASHED;
330}
331
332
4aab5b46 333#ifndef NO_THE_INDEX_COMPATIBILITY_MACROS
228e94f9
JH
334#define active_cache (the_index.cache)
335#define active_nr (the_index.cache_nr)
336#define active_alloc (the_index.cache_alloc)
337#define active_cache_changed (the_index.cache_changed)
338#define active_cache_tree (the_index.cache_tree)
e83c5163 339
4aab5b46
JH
340#define read_cache() read_index(&the_index)
341#define read_cache_from(path) read_index_from(&the_index, (path))
671c9b7e 342#define read_cache_preload(pathspec) read_index_preload(&the_index, (pathspec))
fa7b3c2f 343#define is_cache_unborn() is_index_unborn(&the_index)
e46bbcf6 344#define read_cache_unmerged() read_index_unmerged(&the_index)
4aab5b46
JH
345#define write_cache(newfd, cache, entries) write_index(&the_index, (newfd))
346#define discard_cache() discard_index(&the_index)
94a5728c 347#define unmerged_cache() unmerged_index(&the_index)
4aab5b46
JH
348#define cache_name_pos(name, namelen) index_name_pos(&the_index,(name),(namelen))
349#define add_cache_entry(ce, option) add_index_entry(&the_index, (ce), (option))
81dc2307 350#define rename_cache_entry_at(pos, new_name) rename_index_entry_at(&the_index, (pos), (new_name))
4aab5b46
JH
351#define remove_cache_entry_at(pos) remove_index_entry_at(&the_index, (pos))
352#define remove_file_from_cache(path) remove_file_from_index(&the_index, (path))
38ed1d89
JH
353#define add_to_cache(path, st, flags) add_to_index(&the_index, (path), (st), (flags))
354#define add_file_to_cache(path, flags) add_file_to_index(&the_index, (path), (flags))
3deffc52 355#define refresh_cache(flags) refresh_index(&the_index, (flags), NULL, NULL, NULL)
4bd5b7da
JH
356#define ce_match_stat(ce, st, options) ie_match_stat(&the_index, (ce), (st), (options))
357#define ce_modified(ce, st, options) ie_modified(&the_index, (ce), (st), (options))
cd2fef59 358#define cache_name_exists(name, namelen, igncase) index_name_exists(&the_index, (name), (namelen), (igncase))
98fa4738 359#define cache_name_is_other(name, namelen) index_name_is_other(&the_index, (name), (namelen))
cfc5789a 360#define resolve_undo_clear() resolve_undo_clear_index(&the_index)
8aa38563 361#define unmerge_cache_entry_at(at) unmerge_index_entry_at(&the_index, at)
4421a823 362#define unmerge_cache(pathspec) unmerge_index(&the_index, pathspec)
4aab5b46 363#endif
e83c5163 364
edaec3fb
JH
365enum object_type {
366 OBJ_BAD = -1,
367 OBJ_NONE = 0,
368 OBJ_COMMIT = 1,
369 OBJ_TREE = 2,
370 OBJ_BLOB = 3,
371 OBJ_TAG = 4,
372 /* 5 for future expansion */
373 OBJ_OFS_DELTA = 6,
374 OBJ_REF_DELTA = 7,
355885d5 375 OBJ_ANY,
4b05548f 376 OBJ_MAX
edaec3fb
JH
377};
378
b45563a2
JH
379static inline enum object_type object_type(unsigned int mode)
380{
381 return S_ISDIR(mode) ? OBJ_TREE :
382 S_ISGITLINK(mode) ? OBJ_COMMIT :
383 OBJ_BLOB;
384}
385
8ac069ac 386#define GIT_DIR_ENVIRONMENT "GIT_DIR"
892c41b9 387#define GIT_WORK_TREE_ENVIRONMENT "GIT_WORK_TREE"
8ac069ac 388#define DEFAULT_GIT_DIR_ENVIRONMENT ".git"
d19938ab 389#define DB_ENVIRONMENT "GIT_OBJECT_DIRECTORY"
bb233d69 390#define INDEX_ENVIRONMENT "GIT_INDEX_FILE"
5da5c8f4 391#define GRAFT_ENVIRONMENT "GIT_GRAFT_FILE"
d4ebc36c
JH
392#define TEMPLATE_DIR_ENVIRONMENT "GIT_TEMPLATE_DIR"
393#define CONFIG_ENVIRONMENT "GIT_CONFIG"
2b64fc89 394#define CONFIG_DATA_ENVIRONMENT "GIT_CONFIG_PARAMETERS"
d4ebc36c 395#define EXEC_PATH_ENVIRONMENT "GIT_EXEC_PATH"
0454dd93 396#define CEILING_DIRECTORIES_ENVIRONMENT "GIT_CEILING_DIRECTORIES"
6476b38b 397#define NO_REPLACE_OBJECTS_ENVIRONMENT "GIT_NO_REPLACE_OBJECTS"
d0bfd026
JH
398#define GITATTRIBUTES_FILE ".gitattributes"
399#define INFOATTRIBUTES_FILE "info/attributes"
f48fd688 400#define ATTRIBUTE_MACRO_PREFIX "[attr]"
a97a7468
JS
401#define GIT_NOTES_REF_ENVIRONMENT "GIT_NOTES_REF"
402#define GIT_NOTES_DEFAULT_REF "refs/notes/commits"
894a9d33 403#define GIT_NOTES_DISPLAY_REF_ENVIRONMENT "GIT_NOTES_DISPLAY_REF"
6956f858
TR
404#define GIT_NOTES_REWRITE_REF_ENVIRONMENT "GIT_NOTES_REWRITE_REF"
405#define GIT_NOTES_REWRITE_MODE_ENVIRONMENT "GIT_NOTES_REWRITE_MODE"
bb233d69 406
48a7c1c4
GB
407/*
408 * Repository-local GIT_* environment variables
409 * The array is NULL-terminated to simplify its usage in contexts such
410 * environment creation or simple walk of the list.
411 * The number of non-NULL entries is available as a macro.
412 */
655e8d9c 413#define LOCAL_REPO_ENV_SIZE 9
48a7c1c4
GB
414extern const char *const local_repo_env[LOCAL_REPO_ENV_SIZE + 1];
415
7d1864ce
JH
416extern int is_bare_repository_cfg;
417extern int is_bare_repository(void);
68025633 418extern int is_inside_git_dir(void);
e90fdc39 419extern char *git_work_tree_cfg;
892c41b9 420extern int is_inside_work_tree(void);
d2b0708e 421extern int have_git_dir(void);
c5fba16c 422extern const char *get_git_dir(void);
8ac069ac
JH
423extern char *get_object_directory(void);
424extern char *get_index_file(void);
5da5c8f4 425extern char *get_graft_file(void);
d7ac12b2 426extern int set_git_dir(const char *path);
e90fdc39 427extern const char *get_git_work_tree(void);
b44ebb19 428extern const char *read_gitfile_gently(const char *path);
19757d80 429extern void set_git_work_tree(const char *tree);
8ac069ac
JH
430
431#define ALTERNATE_DB_ENVIRONMENT "GIT_ALTERNATE_OBJECT_DIRECTORIES"
bb233d69 432
6b5ee137 433extern const char **get_pathspec(const char *prefix, const char **pathspec);
59f0f2f3 434extern void setup_work_tree(void);
4ca06608 435extern const char *setup_git_directory_gently(int *);
d288a700 436extern const char *setup_git_directory(void);
edc54fb5 437extern char *prefix_path(const char *prefix, int len, const char *path);
4ca06608 438extern const char *prefix_filename(const char *prefix, int len, const char *path);
c6e8c800 439extern int check_filename(const char *prefix, const char *name);
e23d0b4a 440extern void verify_filename(const char *prefix, const char *name);
ea92f41f 441extern void verify_non_filename(const char *prefix, const char *name);
d288a700 442
f225aeb2
DB
443#define INIT_DB_QUIET 0x0001
444
b57fb80a 445extern int set_git_dir_init(const char *git_dir, const char *real_git_dir, int);
f225aeb2
DB
446extern int init_db(const char *template_dir, unsigned int flags);
447
e83c5163
LT
448#define alloc_nr(x) (((x)+16)*3/2)
449
6815e569
JK
450/*
451 * Realloc the buffer pointed at by variable 'x' so that it can hold
452 * at least 'nr' entries; the number of entries currently allocated
453 * is 'alloc', using the standard growing factor alloc_nr() macro.
454 *
01f6fd4b 455 * DO NOT USE any expression with side-effect for 'x', 'nr', or 'alloc'.
6815e569
JK
456 */
457#define ALLOC_GROW(x, nr, alloc) \
458 do { \
c927e6c6 459 if ((nr) > alloc) { \
4234a761
JH
460 if (alloc_nr(alloc) < (nr)) \
461 alloc = (nr); \
462 else \
463 alloc = alloc_nr(alloc); \
6815e569
JK
464 x = xrealloc((x), alloc * sizeof(*(x))); \
465 } \
98746061 466 } while (0)
6815e569 467
734aab75 468/* Initialize and use the cache information */
4aab5b46 469extern int read_index(struct index_state *);
671c9b7e 470extern int read_index_preload(struct index_state *, const char **pathspec);
4aab5b46 471extern int read_index_from(struct index_state *, const char *path);
fa7b3c2f 472extern int is_index_unborn(struct index_state *);
e46bbcf6 473extern int read_index_unmerged(struct index_state *);
e1afca4f 474extern int write_index(struct index_state *, int newfd);
4aab5b46 475extern int discard_index(struct index_state *);
d1f128b0 476extern int unmerged_index(const struct index_state *);
8dcf39c4 477extern int verify_path(const char *path);
cd2fef59 478extern struct cache_entry *index_name_exists(struct index_state *istate, const char *name, int namelen, int igncase);
d1f128b0 479extern int index_name_pos(const struct index_state *, const char *name, int namelen);
192268c1
JH
480#define ADD_CACHE_OK_TO_ADD 1 /* Ok to add */
481#define ADD_CACHE_OK_TO_REPLACE 2 /* Ok to replace file/directory */
b155725d 482#define ADD_CACHE_SKIP_DFCHECK 4 /* Ok to skip DF conflict checks */
af3785dc 483#define ADD_CACHE_JUST_APPEND 8 /* Append only; tree.c::read_tree() */
39425819 484#define ADD_CACHE_NEW_ONLY 16 /* Do not replace existing ones */
4aab5b46 485extern int add_index_entry(struct index_state *, struct cache_entry *ce, int option);
81dc2307 486extern void rename_index_entry_at(struct index_state *, int pos, const char *new_name);
4aab5b46 487extern int remove_index_entry_at(struct index_state *, int pos);
36419c8e 488extern void remove_marked_cache_entries(struct index_state *istate);
4aab5b46 489extern int remove_file_from_index(struct index_state *, const char *path);
38ed1d89
JH
490#define ADD_CACHE_VERBOSE 1
491#define ADD_CACHE_PRETEND 2
01665924 492#define ADD_CACHE_IGNORE_ERRORS 4
041aee31 493#define ADD_CACHE_IGNORE_REMOVAL 8
39425819 494#define ADD_CACHE_INTENT 16
38ed1d89
JH
495extern int add_to_index(struct index_state *, const char *path, struct stat *, int flags);
496extern int add_file_to_index(struct index_state *, const char *path, int flags);
6640f881 497extern struct cache_entry *make_cache_entry(unsigned int mode, const unsigned char *sha1, const char *path, int stage, int refresh);
dbbce55b 498extern int ce_same_name(struct cache_entry *a, struct cache_entry *b);
98fa4738 499extern int index_name_is_other(const struct index_state *, const char *, int);
4bd5b7da
JH
500
501/* do stat comparison even if CE_VALID is true */
502#define CE_MATCH_IGNORE_VALID 01
503/* do not check the contents but report dirty on racily-clean entries */
56cac48c
NTND
504#define CE_MATCH_RACY_IS_DIRTY 02
505/* do stat comparison even if CE_SKIP_WORKTREE is true */
506#define CE_MATCH_IGNORE_SKIP_WORKTREE 04
d1f128b0
LT
507extern int ie_match_stat(const struct index_state *, struct cache_entry *, struct stat *, unsigned int);
508extern int ie_modified(const struct index_state *, struct cache_entry *, struct stat *, unsigned int);
4bd5b7da 509
0602f3e9
NTND
510struct pathspec {
511 const char **raw; /* get_pathspec() result, not freed by free_pathspec() */
512 int nr;
9ddf1726
JN
513 unsigned int has_wildcard:1;
514 unsigned int recursive:1;
bc96cc87 515 int max_depth;
0602f3e9
NTND
516 struct pathspec_item {
517 const char *match;
518 int len;
9ddf1726 519 unsigned int has_wildcard:1;
0602f3e9
NTND
520 } *items;
521};
522
523extern int init_pathspec(struct pathspec *, const char **);
524extern void free_pathspec(struct pathspec *);
eb9cb55b 525extern int ce_path_match(const struct cache_entry *ce, const struct pathspec *pathspec);
c879daa2 526extern int index_fd(unsigned char *sha1, int fd, struct stat *st, int write_object, enum object_type type, const char *path, int format_check);
ec1fcc16 527extern int index_path(unsigned char *sha1, const char *path, struct stat *st, int write_object);
415e96c8
JH
528extern void fill_stat_cache_info(struct cache_entry *ce, struct stat *st);
529
405e5b2f
LT
530#define REFRESH_REALLY 0x0001 /* ignore_valid */
531#define REFRESH_UNMERGED 0x0002 /* allow unmerged */
532#define REFRESH_QUIET 0x0004 /* be quiet about it */
533#define REFRESH_IGNORE_MISSING 0x0008 /* ignore non-existent */
3f1b7b60 534#define REFRESH_IGNORE_SUBMODULES 0x0010 /* ignore submodules */
43673fdd 535#define REFRESH_IN_PORCELAIN 0x0020 /* user friendly output, not "needs update" */
046613c5 536extern int refresh_index(struct index_state *, unsigned int flags, const char **pathspec, char *seen, const char *header_msg);
405e5b2f 537
021b6e45
JH
538struct lock_file {
539 struct lock_file *next;
4723ee99 540 int fd;
5e635e39 541 pid_t owner;
1084b845 542 char on_list;
021b6e45 543 char filename[PATH_MAX];
415e96c8 544};
acd3b9ec
JH
545#define LOCK_DIE_ON_ERROR 1
546#define LOCK_NODEREF 2
1b018fd9 547extern int unable_to_lock_error(const char *path, int err);
e43a6fd3 548extern NORETURN void unable_to_lock_index_die(const char *path, int err);
40aaae88 549extern int hold_lock_file_for_update(struct lock_file *, const char *path, int);
ea3cd5c7 550extern int hold_lock_file_for_append(struct lock_file *, const char *path, int);
021b6e45 551extern int commit_lock_file(struct lock_file *);
ccdc4ec3 552extern void update_index_if_able(struct index_state *, struct lock_file *);
30ca07a2
JH
553
554extern int hold_locked_index(struct lock_file *, int);
555extern int commit_locked_index(struct lock_file *);
5e7f56ac 556extern void set_alternate_index_output(const char *);
d6cf61bf 557extern int close_lock_file(struct lock_file *);
021b6e45 558extern void rollback_lock_file(struct lock_file *);
eca35a25 559extern int delete_ref(const char *, const unsigned char *sha1, int delopt);
734aab75 560
2ae1c53b 561/* Environment bits from configuration mechanism */
17712991 562extern int trust_executable_bit;
1ce4790b 563extern int trust_ctime;
9378c161 564extern int quote_path_fully;
78a8d641 565extern int has_symlinks;
dce96489 566extern int minimum_abbrev, default_abbrev;
0a9b88b7 567extern int ignore_case;
5f73076c 568extern int assume_unchanged;
9f0bb90d 569extern int prefer_symlink_refs;
6de08ae6 570extern int log_all_ref_updates;
2f8acdb3 571extern int warn_ambiguous_refs;
457f06d6 572extern int shared_repository;
2ae1c53b 573extern const char *apply_default_whitespace;
86c91f91 574extern const char *apply_default_ignorewhitespace;
12f6c308 575extern int zlib_compression_level;
960ccca6
DH
576extern int core_compression_level;
577extern int core_compression_seen;
60bb8b14 578extern size_t packed_git_window_size;
77ccc5bb 579extern size_t packed_git_limit;
18bdec11 580extern size_t delta_base_cache_limit;
15366280 581extern unsigned long big_file_threshold;
dae556bd 582extern int read_replace_refs;
aafe9fba 583extern int fsync_object_files;
671c9b7e 584extern int core_preload_index;
08aefc9e 585extern int core_apply_sparse_checkout;
17712991 586
21e5ad50
SP
587enum safe_crlf {
588 SAFE_CRLF_FALSE = 0,
589 SAFE_CRLF_FAIL = 1,
4b05548f 590 SAFE_CRLF_WARN = 2
21e5ad50
SP
591};
592
593extern enum safe_crlf safe_crlf;
594
fd6cce9e
EB
595enum auto_crlf {
596 AUTO_CRLF_FALSE = 0,
597 AUTO_CRLF_TRUE = 1,
c9b6782a 598 AUTO_CRLF_INPUT = -1
fd6cce9e
EB
599};
600
601extern enum auto_crlf auto_crlf;
602
942e7747
EB
603enum eol {
604 EOL_UNSET,
605 EOL_CRLF,
606 EOL_LF,
607#ifdef NATIVE_CRLF
608 EOL_NATIVE = EOL_CRLF
609#else
610 EOL_NATIVE = EOL_LF
611#endif
612};
613
614extern enum eol eol;
615
9ed36cfa 616enum branch_track {
9188ed89 617 BRANCH_TRACK_UNSPECIFIED = -1,
9ed36cfa
JS
618 BRANCH_TRACK_NEVER = 0,
619 BRANCH_TRACK_REMOTE,
620 BRANCH_TRACK_ALWAYS,
621 BRANCH_TRACK_EXPLICIT,
4b05548f 622 BRANCH_TRACK_OVERRIDE
9ed36cfa
JS
623};
624
c998ae9b
DS
625enum rebase_setup_type {
626 AUTOREBASE_NEVER = 0,
627 AUTOREBASE_LOCAL,
628 AUTOREBASE_REMOTE,
4b05548f 629 AUTOREBASE_ALWAYS
c998ae9b
DS
630};
631
52153747 632enum push_default_type {
52153747
FAG
633 PUSH_DEFAULT_NOTHING = 0,
634 PUSH_DEFAULT_MATCHING,
53c40311 635 PUSH_DEFAULT_UPSTREAM,
4b05548f 636 PUSH_DEFAULT_CURRENT
52153747
FAG
637};
638
9ed36cfa 639extern enum branch_track git_branch_track;
c998ae9b 640extern enum rebase_setup_type autorebase;
52153747 641extern enum push_default_type push_default;
9ed36cfa 642
348df166
JS
643enum object_creation_mode {
644 OBJECT_CREATION_USES_HARDLINKS = 0,
4b05548f 645 OBJECT_CREATION_USES_RENAMES = 1
348df166
JS
646};
647
648extern enum object_creation_mode object_creation_mode;
be66a6c4 649
a97a7468
JS
650extern char *notes_ref_name;
651
7f3140cd
JS
652extern int grafts_replace_parents;
653
ab9cb76f
JH
654#define GIT_REPO_VERSION 0
655extern int repository_format_version;
656extern int check_repository_format(void);
657
734aab75
LT
658#define MTIME_CHANGED 0x0001
659#define CTIME_CHANGED 0x0002
660#define OWNER_CHANGED 0x0004
661#define MODE_CHANGED 0x0008
662#define INODE_CHANGED 0x0010
663#define DATA_CHANGED 0x0020
8ae0a8c5 664#define TYPE_CHANGED 0x0040
e83c5163 665
108bebea
AR
666extern char *mksnpath(char *buf, size_t n, const char *fmt, ...)
667 __attribute__((format (printf, 3, 4)));
fe2d7776
AR
668extern char *git_snpath(char *buf, size_t n, const char *fmt, ...)
669 __attribute__((format (printf, 3, 4)));
aba13e7c
AR
670extern char *git_pathdup(const char *fmt, ...)
671 __attribute__((format (printf, 1, 2)));
108bebea 672
e83c5163 673/* Return a statically allocated filename matching the sha1 signature */
4ec99bf0
TS
674extern char *mkpath(const char *fmt, ...) __attribute__((format (printf, 1, 2)));
675extern char *git_path(const char *fmt, ...) __attribute__((format (printf, 1, 2)));
0bad611b
HV
676extern char *git_path_submodule(const char *path, const char *fmt, ...)
677 __attribute__((format (printf, 2, 3)));
678
73134b6d 679extern char *sha1_file_name(const unsigned char *sha1);
bf592c50
DB
680extern char *sha1_pack_name(const unsigned char *sha1);
681extern char *sha1_pack_index_name(const unsigned char *sha1);
013f276e 682extern const char *find_unique_abbrev(const unsigned char *sha1, int);
88cd621d 683extern const unsigned char null_sha1[20];
0bef57ee
DR
684static inline int is_null_sha1(const unsigned char *sha1)
685{
686 return !memcmp(sha1, null_sha1, 20);
687}
a89fccd2
DR
688static inline int hashcmp(const unsigned char *sha1, const unsigned char *sha2)
689{
690 return memcmp(sha1, sha2, 20);
691}
e702496e
SP
692static inline void hashcpy(unsigned char *sha_dst, const unsigned char *sha_src)
693{
694 memcpy(sha_dst, sha_src, 20);
695}
a8e0d16d
JH
696static inline void hashclr(unsigned char *hash)
697{
698 memset(hash, 0, 20);
699}
e83c5163 700
14d9c578
JK
701#define EMPTY_TREE_SHA1_HEX \
702 "4b825dc642cb6eb9a060e54bf8d69288fbee4904"
dab0d410 703#define EMPTY_TREE_SHA1_BIN_LITERAL \
14d9c578
JK
704 "\x4b\x82\x5d\xc6\x42\xcb\x6e\xb9\xa0\x60" \
705 "\xe5\x4b\xf8\xd6\x92\x88\xfb\xee\x49\x04"
dab0d410
JN
706#define EMPTY_TREE_SHA1_BIN \
707 ((const unsigned char *) EMPTY_TREE_SHA1_BIN_LITERAL)
14d9c578 708
f2db68ed
HE
709int git_mkstemp(char *path, size_t n, const char *template);
710
003b33a8
DA
711int git_mkstemps(char *path, size_t n, const char *template, int suffix_len);
712
b862b61c
MM
713/* set default permissions by passing mode arguments to open(2) */
714int git_mkstemps_mode(char *pattern, int suffix_len, int mode);
715int git_mkstemp_mode(char *pattern, int mode);
716
06cbe855
HO
717/*
718 * NOTE NOTE NOTE!!
719 *
720 * PERM_UMASK, OLD_PERM_GROUP and OLD_PERM_EVERYBODY enumerations must
721 * not be changed. Old repositories have core.sharedrepository written in
722 * numeric format, and therefore these values are preserved for compatibility
723 * reasons.
724 */
94df2506 725enum sharedrepo {
06cbe855
HO
726 PERM_UMASK = 0,
727 OLD_PERM_GROUP = 1,
728 OLD_PERM_EVERYBODY = 2,
729 PERM_GROUP = 0660,
4b05548f 730 PERM_EVERYBODY = 0664
94df2506
JH
731};
732int git_config_perm(const char *var, const char *value);
17e61b82
JH
733int set_shared_perm(const char *path, int mode);
734#define adjust_shared_perm(path) set_shared_perm((path), 0)
b2cb9425 735int safe_create_leading_directories(char *path);
8e21d63b 736int safe_create_leading_directories_const(const char *path);
90a6464b 737int mkdir_in_gitdir(const char *path);
395de250 738extern char *expand_user_path(const char *path);
bd22c904 739char *enter_repo(char *path, int strict);
e5392c51
JS
740static inline int is_absolute_path(const char *path)
741{
25fe217b 742 return path[0] == '/' || has_dos_drive_prefix(path);
e5392c51 743}
90b4a71c 744int is_directory(const char *);
e2a57aac
CMN
745const char *real_path(const char *path);
746const char *absolute_path(const char *path);
747const char *relative_path(const char *abs, const char *base);
f3cad0ad 748int normalize_path_copy(char *dst, const char *src);
0454dd93 749int longest_ancestor_length(const char *path, const char *prefix_list);
4fcc86b0 750char *strip_path_suffix(const char *path, const char *suffix);
34b6cb8b 751int daemon_avoid_alias(const char *path);
4bb43de2 752int offset_1st_component(const char *path);
b2cb9425 753
e83c5163 754/* Read and unpack a sha1 file into memory, write memory to a sha1 file */
21666f1a 755extern int sha1_object_info(const unsigned char *, unsigned long *);
f5552aee
CC
756extern void *read_sha1_file_repl(const unsigned char *sha1, enum object_type *type, unsigned long *size, const unsigned char **replacement);
757static inline void *read_sha1_file(const unsigned char *sha1, enum object_type *type, unsigned long *size)
758{
759 return read_sha1_file_repl(sha1, type, size, NULL);
760}
ce9fbf16 761extern int hash_sha1_file(const void *buf, unsigned long len, const char *type, unsigned char *sha1);
c00e657d 762extern int write_sha1_file(const void *buf, unsigned long len, const char *type, unsigned char *return_sha1);
21666f1a 763extern int pretend_sha1_file(void *, unsigned long, enum object_type, unsigned char *);
bbac7311 764extern int force_object_loose(const unsigned char *sha1, time_t mtime);
8237b185 765
0e8189e2
NP
766/* global flag to enable extra checks when accessing packed objects */
767extern int do_check_packed_object_crc;
768
5d6ccf5c 769extern int check_sha1_signature(const unsigned char *sha1, void *buf, unsigned long size, const char *type);
e83c5163 770
839837b9 771extern int move_temp_to_file(const char *tmpfile, const char *filename);
8237b185 772
cd673c1f 773extern int has_sha1_pack(const unsigned char *sha1);
8237b185 774extern int has_sha1_file(const unsigned char *sha1);
0f4dc14a 775extern int has_loose_object_nonlocal(const unsigned char *sha1);
8237b185 776
bf592c50
DB
777extern int has_pack_index(const unsigned char *sha1);
778
40d52ff7
JK
779extern void assert_sha1_type(const unsigned char *sha1, enum object_type expect);
780
192a6be2
LT
781extern const signed char hexval_table[256];
782static inline unsigned int hexval(unsigned char c)
e49521b5
JH
783{
784 return hexval_table[c];
785}
786
e83c5163 787/* Convert to/from hex/sha1 representation */
dce96489
LT
788#define MINIMUM_ABBREV minimum_abbrev
789#define DEFAULT_ABBREV default_abbrev
46a6c262 790
573285e5
CP
791struct object_context {
792 unsigned char tree[20];
793 char path[PATH_MAX];
794 unsigned mode;
795};
796
3c249c95 797extern int get_sha1(const char *str, unsigned char *sha1);
009fee47
MM
798extern int get_sha1_with_mode_1(const char *str, unsigned char *sha1, unsigned *mode, int gently, const char *prefix);
799static inline int get_sha1_with_mode(const char *str, unsigned char *sha1, unsigned *mode)
800{
801 return get_sha1_with_mode_1(str, sha1, mode, 1, NULL);
802}
573285e5
CP
803extern int get_sha1_with_context_1(const char *name, unsigned char *sha1, struct object_context *orc, int gently, const char *prefix);
804static inline int get_sha1_with_context(const char *str, unsigned char *sha1, struct object_context *orc)
805{
806 return get_sha1_with_context_1(str, sha1, orc, 1, NULL);
807}
197ee8c9
LT
808extern int get_sha1_hex(const char *hex, unsigned char *sha1);
809extern char *sha1_to_hex(const unsigned char *sha1); /* static buffer result! */
ca8db142 810extern int read_ref(const char *filename, unsigned char *sha1);
8da19775 811extern const char *resolve_ref(const char *path, unsigned char *sha1, int, int *);
e86eb666 812extern int dwim_ref(const char *str, int len, unsigned char *sha1, char **ref);
eb3a4822 813extern int dwim_log(const char *str, int len, unsigned char *sha1, char **ref);
431b1969 814extern int interpret_branch_name(const char *str, struct strbuf *);
619a644d 815extern int get_sha1_mb(const char *str, unsigned char *sha1);
e86eb666 816
79803322
SP
817extern int refname_match(const char *abbrev_name, const char *full_name, const char **rules);
818extern const char *ref_rev_parse_rules[];
605b4978 819extern const char *ref_fetch_rules[];
79803322 820
8b5157e4 821extern int create_symref(const char *ref, const char *refs_heads_master, const char *logmsg);
c847f537 822extern int validate_headref(const char *ref);
e83c5163 823
958ba6c9 824extern int base_name_compare(const char *name1, int len1, int mode1, const char *name2, int len2, int mode2);
0ab9e1e8 825extern int df_name_compare(const char *name1, int len1, int mode1, const char *name2, int len2, int mode2);
79517a06 826extern int cache_name_compare(const char *name1, int len1, const char *name2, int len2);
e83c5163 827
40469ee9 828extern void *read_object_with_reference(const unsigned char *sha1,
bf0f910d 829 const char *required_type,
40469ee9
JH
830 unsigned long *size,
831 unsigned char *sha1_ret);
f4913f91 832
81776315
JH
833extern struct object *peel_to_type(const char *name, int namelen,
834 struct object *o, enum object_type);
835
73013afd
JH
836enum date_mode {
837 DATE_NORMAL = 0,
838 DATE_RELATIVE,
839 DATE_SHORT,
840 DATE_LOCAL,
841 DATE_ISO8601,
7dff9b30
LT
842 DATE_RFC2822,
843 DATE_RAW
73013afd
JH
844};
845
f8493ec0 846const char *show_date(unsigned long time, int timezone, enum date_mode mode);
33012fc4
AR
847const char *show_date_relative(unsigned long time, int tz,
848 const struct timeval *now,
849 char *timebuf,
850 size_t timebuf_size);
2a39064c 851int parse_date(const char *date, char *buf, int bufsize);
9644c061 852int parse_date_basic(const char *date, unsigned long *timestamp, int *offset);
ecee9d9e 853void datestamp(char *buf, int bufsize);
93cfa7c7
JH
854#define approxidate(s) approxidate_careful((s), NULL)
855unsigned long approxidate_careful(const char *, int *);
33012fc4 856unsigned long approxidate_relative(const char *date, const struct timeval *now);
856665f8 857enum date_mode parse_date_format(const char *format);
ecee9d9e 858
774751a8
JH
859#define IDENT_WARN_ON_NO_NAME 1
860#define IDENT_ERROR_ON_NO_NAME 2
861#define IDENT_NO_DATE 4
749be728
JH
862extern const char *git_author_info(int);
863extern const char *git_committer_info(int);
798123af 864extern const char *fmt_ident(const char *name, const char *email, const char *date_str, int);
d9ccfe77 865extern const char *fmt_name(const char *name, const char *email);
44fcb497 866extern const char *git_editor(void);
64778d24 867extern const char *git_pager(int stdout_is_tty);
6aa33f40 868
12dccc16
LT
869struct checkout {
870 const char *base_dir;
871 int base_dir_len;
872 unsigned force:1,
873 quiet:1,
874 not_new:1,
875 refresh_cache:1;
876};
877
efbc5831 878extern int checkout_entry(struct cache_entry *ce, const struct checkout *state, char *topath);
b9fd2846
LT
879
880struct cache_def {
881 char path[PATH_MAX + 1];
882 int len;
883 int flags;
884 int track_flags;
885 int prefix_len_stat_func;
886};
887
57199892 888extern int has_symlink_leading_path(const char *name, int len);
b9fd2846 889extern int threaded_has_symlink_leading_path(struct cache_def *, const char *, int);
f66caaf9 890extern int check_leading_path(const char *name, int len);
57199892 891extern int has_dirs_only_path(const char *name, int len, int prefix_len);
78478927
KB
892extern void schedule_dir_for_removal(const char *name, int len);
893extern void remove_scheduled_dirs(void);
12dccc16 894
9a217f2a 895extern struct alternate_object_database {
d5a63b99 896 struct alternate_object_database *next;
9a217f2a 897 char *name;
8f1d2e6f 898 char base[FLEX_ARRAY]; /* more */
d5a63b99 899} *alt_odb_list;
9a217f2a 900extern void prepare_alt_odb(void);
bef70b22 901extern void add_to_alternates_file(const char *reference);
d79796bc
JH
902typedef int alt_odb_fn(struct alternate_object_database *, void *);
903extern void foreach_alt_odb(alt_odb_fn, void*);
9a217f2a 904
c41ee586
SP
905struct pack_window {
906 struct pack_window *next;
907 unsigned char *base;
908 off_t offset;
909 size_t len;
910 unsigned int last_used;
911 unsigned int inuse_cnt;
912};
913
9a217f2a
JH
914extern struct packed_git {
915 struct packed_git *next;
c41ee586 916 struct pack_window *windows;
2dc3a234 917 off_t pack_size;
57059091
NP
918 const void *index_data;
919 size_t index_size;
920 uint32_t num_objects;
8eca0b47
NP
921 uint32_t num_bad_objects;
922 unsigned char *bad_object_sha1;
42873078 923 int index_version;
57059091 924 time_t mtime;
9bc879c1 925 int pack_fd;
8d25931d 926 unsigned pack_local:1,
d131b7af
SP
927 pack_keep:1,
928 do_not_close:1;
bf592c50 929 unsigned char sha1[20];
8f1d2e6f
JH
930 /* something like ".git/objects/pack/xxxxx.pack" */
931 char pack_name[FLEX_ARRAY]; /* more */
9a217f2a 932} *packed_git;
f3bf9224
JH
933
934struct pack_entry {
c4001d92 935 off_t offset;
f3bf9224
JH
936 unsigned char sha1[20];
937 struct packed_git *p;
938};
939
d1c133f5
LT
940struct ref {
941 struct ref *next;
942 unsigned char old_sha1[20];
943 unsigned char new_sha1[20];
be885d96 944 char *symref;
9f8a15c7
SP
945 unsigned int force:1,
946 merge:1,
947 nonfastforward:1,
948 deletion:1;
8736a848
JK
949 enum {
950 REF_STATUS_NONE = 0,
951 REF_STATUS_OK,
952 REF_STATUS_REJECT_NONFASTFORWARD,
953 REF_STATUS_REJECT_NODELETE,
954 REF_STATUS_UPTODATE,
ca74c458 955 REF_STATUS_REMOTE_REJECT,
4b05548f 956 REF_STATUS_EXPECTING_REPORT
8736a848 957 } status;
2a0fe89a 958 char *remote_status;
f88395ac 959 struct ref *peer_ref; /* when renaming */
8f1d2e6f 960 char name[FLEX_ARRAY]; /* more */
d1c133f5
LT
961};
962
2718ff09
LT
963#define REF_NORMAL (1u << 0)
964#define REF_HEADS (1u << 1)
965#define REF_TAGS (1u << 2)
966
5483f799 967extern struct ref *find_ref_by_name(const struct ref *list, const char *name);
cda69f48 968
7841ce79 969#define CONNECT_VERBOSE (1u << 0)
f206063b 970extern char *git_getpass(const char *prompt);
4577370e 971extern struct child_process *git_connect(int fd[2], const char *url, const char *prog, int flags);
98158e9c 972extern int finish_connect(struct child_process *conn);
7ffe853b 973extern int git_connection_is_socket(struct child_process *conn);
013e7c7f 974extern int path_match(const char *path, int nr, char **match);
40c155ff
JH
975struct extra_have_objects {
976 int nr, alloc;
977 unsigned char (*array)[20];
978};
979extern struct ref **get_remote_heads(int in, struct ref **list, int nr_match, char **match, unsigned int flags, struct extra_have_objects *);
211b5f9e 980extern int server_supports(const char *feature);
f7192598 981
7b64469a 982extern struct packed_git *parse_pack_index(unsigned char *sha1, const char *idx_path);
bf592c50 983
9a217f2a 984extern void prepare_packed_git(void);
fc04c412 985extern void reprepare_packed_git(void);
bf592c50
DB
986extern void install_packed_git(struct packed_git *pack);
987
a6080a0a 988extern struct packed_git *find_sha1_pack(const unsigned char *sha1,
bf592c50
DB
989 struct packed_git *packs);
990
276bc2ca 991extern void pack_report(void);
d079837e 992extern int open_pack_index(struct packed_git *);
fa5fc15d 993extern void close_pack_index(struct packed_git *);
4b25d091 994extern unsigned char *use_pack(struct packed_git *, struct pack_window **, off_t, unsigned int *);
c9ced051 995extern void close_pack_windows(struct packed_git *);
03e79c88 996extern void unuse_pack(struct pack_window **);
c74faea1 997extern void free_pack_by_name(const char *);
3d20c636 998extern void clear_delta_base_cache(void);
42873078 999extern struct packed_git *add_packed_git(const char *, int, int);
d079837e 1000extern const unsigned char *nth_packed_object_sha1(struct packed_git *, uint32_t);
99093238 1001extern off_t nth_packed_object_offset(const struct packed_git *, uint32_t);
c4001d92
SP
1002extern off_t find_pack_entry_one(const unsigned char *, struct packed_git *);
1003extern void *unpack_entry(struct packed_git *, off_t, enum object_type *, unsigned long *);
09ded04b 1004extern unsigned long unpack_object_header_buffer(const unsigned char *buf, unsigned long len, enum object_type *type, unsigned long *sizep);
54dab52a 1005extern unsigned long get_size_from_delta(struct packed_git *, struct pack_window **, off_t);
c4001d92 1006extern const char *packed_object_info_detail(struct packed_git *, off_t, unsigned long *, unsigned long *, unsigned int *, unsigned char *);
9a217f2a 1007
8f3f9b09
JH
1008/* Dumb servers support */
1009extern int update_server_info(int);
1010
ef90d6d4
JS
1011typedef int (*config_fn_t)(const char *, const char *, void *);
1012extern int git_default_config(const char *, const char *, void *);
1013extern int git_config_from_file(config_fn_t fn, const char *, void *);
2b64fc89 1014extern void git_config_push_parameter(const char *text);
b3d83d9f 1015extern int git_config_from_parameters(config_fn_t fn, void *data);
ef90d6d4 1016extern int git_config(config_fn_t fn, void *);
dbdf5854 1017extern int git_config_early(config_fn_t fn, void *, const char *repo_config);
0b87b6e0 1018extern int git_parse_ulong(const char *, unsigned long *);
17712991 1019extern int git_config_int(const char *, const char *);
0b87b6e0 1020extern unsigned long git_config_ulong(const char *, const char *);
a53f2ec6 1021extern int git_config_bool_or_int(const char *, const char *, int *);
17712991 1022extern int git_config_bool(const char *, const char *);
8420ccd8 1023extern int git_config_maybe_bool(const char *, const char *);
ea5105a5 1024extern int git_config_string(const char **, const char *, const char *);
395de250 1025extern int git_config_pathname(const char **, const char *, const char *);
10bea152 1026extern int git_config_set(const char *, const char *);
b09c53a3 1027extern int git_config_parse_key(const char *, char **, int *);
4ddba79d 1028extern int git_config_set_multivar(const char *, const char *, const char *, int);
0667fcfb 1029extern int git_config_rename_section(const char *, const char *);
506b17b1 1030extern const char *git_etc_gitconfig(void);
ef90d6d4 1031extern int check_repository_format_version(const char *var, const char *value, void *cb);
0ef37164 1032extern int git_env_bool(const char *, int);
ab88c363 1033extern int git_config_system(void);
40ea4ed9 1034extern int config_error_nonbool(const char *);
a6fa5992
PN
1035extern const char *get_log_output_encoding(void);
1036extern const char *get_commit_output_encoding(void);
1037
dc871831 1038extern const char *config_exclusive_filename;
17712991 1039
e1b10391
LT
1040#define MAX_GITNAME (1000)
1041extern char git_default_email[MAX_GITNAME];
1042extern char git_default_name[MAX_GITNAME];
91c38a21
JH
1043#define IDENT_NAME_GIVEN 01
1044#define IDENT_MAIL_GIVEN 02
1045#define IDENT_ALL_GIVEN (IDENT_NAME_GIVEN|IDENT_MAIL_GIVEN)
bb1ae3f6 1046extern int user_ident_explicitly_given;
5aeb3a3a 1047extern int user_ident_sufficiently_given(void);
e1b10391 1048
1a8f2741 1049extern const char *git_commit_encoding;
3a55602e 1050extern const char *git_log_output_encoding;
d551a488 1051extern const char *git_mailmap_file;
4e72dcec 1052
06f59e9f
TT
1053/* IO helper functions */
1054extern void maybe_flush_or_die(FILE *, const char *);
f3123c4a 1055extern int copy_fd(int ifd, int ofd);
1468bd47 1056extern int copy_file(const char *dst, const char *src, int mode);
f7835a25 1057extern int copy_file_with_time(const char *dst, const char *src, int mode);
7230e6d0 1058extern void write_or_die(int fd, const void *buf, size_t count);
6ce4e61f 1059extern int write_or_whine(int fd, const void *buf, size_t count, const char *msg);
e0814056 1060extern int write_or_whine_pipe(int fd, const void *buf, size_t count, const char *msg);
4c81b03e 1061extern void fsync_or_die(int fd, const char *);
ad897215 1062
2b7ca830
JM
1063extern ssize_t read_in_full(int fd, void *buf, size_t count);
1064extern ssize_t write_in_full(int fd, const void *buf, size_t count);
1065static inline ssize_t write_str_in_full(int fd, const char *str)
1066{
1067 return write_in_full(fd, str, strlen(str));
1068}
1069
f67b45f8
LT
1070/* pager.c */
1071extern void setup_pager(void);
872da32d 1072extern const char *pager_program;
6e9af863 1073extern int pager_in_use(void);
aa086eb8 1074extern int pager_use_color;
f67b45f8 1075
ee9601e6 1076extern const char *editor_program;
d3e7da89 1077extern const char *askpass_program;
dfb068be 1078extern const char *excludes_file;
4d87b9c5 1079
051308f6 1080/* base85 */
f9815772
JM
1081int decode_85(char *dst, const char *line, int linelen);
1082void encode_85(char *buf, const unsigned char *data, int bytes);
051308f6 1083
855419f7 1084/* alloc.c */
100c5f3b
LT
1085extern void *alloc_blob_node(void);
1086extern void *alloc_tree_node(void);
1087extern void *alloc_commit_node(void);
1088extern void *alloc_tag_node(void);
1089extern void *alloc_object_node(void);
855419f7
LT
1090extern void alloc_report(void);
1091
6ce4e61f 1092/* trace.c */
28bea9e5 1093__attribute__((format (printf, 1, 2)))
6ce4e61f 1094extern void trace_printf(const char *format, ...);
06796607 1095extern void trace_vprintf(const char *key, const char *format, va_list ap);
28bea9e5 1096__attribute__((format (printf, 2, 3)))
b319ce4c 1097extern void trace_argv_printf(const char **argv, const char *format, ...);
a9ca8a85 1098extern void trace_repo_setup(const char *prefix);
39bc5e46 1099extern int trace_want(const char *key);
94b3b374 1100extern void trace_strbuf(const char *key, const struct strbuf *buf);
6ce4e61f 1101
bbc30f99 1102void packet_trace_identity(const char *prog);
6ce4e61f 1103
6c510bee 1104/* convert.c */
5ecd293d 1105/* returns 1 if *dst was used */
21e5ad50
SP
1106extern int convert_to_git(const char *path, const char *src, size_t len,
1107 struct strbuf *dst, enum safe_crlf checksafe);
5ecd293d 1108extern int convert_to_working_tree(const char *path, const char *src, size_t len, struct strbuf *dst);
f217f0e8 1109extern int renormalize_buffer(const char *path, const char *src, size_t len, struct strbuf *dst);
6c510bee 1110
b6ec1d61 1111/* add */
7ae02a30
AR
1112/*
1113 * return 0 if success, 1 - if addition of a file failed and
1114 * ADD_FILES_IGNORE_ERRORS was specified in flags
1115 */
1116int add_files_to_cache(const char *prefix, const char **pathspec, int flags);
b6ec1d61 1117
aecbf914
JH
1118/* diff.c */
1119extern int diff_auto_refresh_index;
1120
68faf689
JH
1121/* match-trees.c */
1122void shift_tree(const unsigned char *, const unsigned char *, unsigned char *, int);
85e51b78 1123void shift_tree_by(const unsigned char *, const unsigned char *, unsigned char *, const char *);
68faf689 1124
a9cc857a
JH
1125/*
1126 * whitespace rules.
1127 * used by both diff and apply
f4b05a49 1128 * last two digits are tab width
a9cc857a 1129 */
f4b05a49
JS
1130#define WS_BLANK_AT_EOL 0100
1131#define WS_SPACE_BEFORE_TAB 0200
1132#define WS_INDENT_WITH_NON_TAB 0400
1133#define WS_CR_AT_EOL 01000
1134#define WS_BLANK_AT_EOF 02000
1135#define WS_TAB_IN_INDENT 04000
aeb84b05 1136#define WS_TRAILING_SPACE (WS_BLANK_AT_EOL|WS_BLANK_AT_EOF)
f4b05a49
JS
1137#define WS_DEFAULT_RULE (WS_TRAILING_SPACE|WS_SPACE_BEFORE_TAB|8)
1138#define WS_TAB_WIDTH_MASK 077
cf1b7869
JH
1139extern unsigned whitespace_rule_cfg;
1140extern unsigned whitespace_rule(const char *);
1141extern unsigned parse_whitespace_rule(const char *);
8f8841e9
JH
1142extern unsigned ws_check(const char *line, int len, unsigned ws_rule);
1143extern void ws_check_emit(const char *line, int len, unsigned ws_rule, FILE *stream, const char *set, const char *reset, const char *ws);
c1795bb0 1144extern char *whitespace_error_string(unsigned ws);
d511bd33 1145extern void ws_fix_copy(struct strbuf *, const char *, int, unsigned, int *);
877f23cc 1146extern int ws_blank_line(const char *line, int len, unsigned ws_rule);
f4b05a49 1147#define ws_tab_width(rule) ((rule) & WS_TAB_WIDTH_MASK)
a9cc857a 1148
ee425e46 1149/* ls-files */
ee425e46
JH
1150int report_path_error(const char *ps_matched, const char **pathspec, int prefix_offset);
1151void overlay_tree_on_cache(const char *tree_name, const char *prefix);
1152
94351118 1153char *alias_lookup(const char *alias);
0989fe96 1154int split_cmdline(char *cmdline, const char ***argv);
ad9ac6db
GB
1155/* Takes a negative value returned by split_cmdline */
1156const char *split_cmdline_strerror(int cmdline_errno);
94351118 1157
e37c1329
NTND
1158/* git.c */
1159struct startup_info {
a60645f9 1160 int have_repository;
f07d6a1a 1161 const char *prefix;
e37c1329
NTND
1162};
1163extern struct startup_info *startup_info;
1164
cac42b26
JH
1165/* builtin/merge.c */
1166int checkout_fast_forward(const unsigned char *from, const unsigned char *to);
1167
e83c5163 1168#endif /* CACHE_H */