Merge branch 'ak/gcc46-profile-feedback'
[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"
d1bf0e08 9#include "convert.h"
e83c5163 10
cef661fc 11#include SHA1_HEADER
9126f009
NP
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
e83c5163 18
9126f009 19#include <zlib.h>
609a2289 20#if defined(NO_DEFLATE_BOUND) || ZLIB_VERNUM < 0x1200
9da3acfb
ET
21#define deflateBound(c,s) ((s) + (((s) + 7) >> 3) + (((s) + 63) >> 6) + 11)
22#endif
23
39c68542
LT
24void git_inflate_init(z_streamp strm);
25void git_inflate_end(z_streamp strm);
26int git_inflate(z_streamp strm, int flush);
27
962554c6 28#if defined(DT_UNKNOWN) && !defined(NO_D_TYPE_IN_DIRENT)
b6829693
ET
29#define DTYPE(de) ((de)->d_type)
30#else
0bdd79af
JH
31#undef DT_UNKNOWN
32#undef DT_DIR
33#undef DT_REG
34#undef DT_LNK
b6829693
ET
35#define DT_UNKNOWN 0
36#define DT_DIR 1
37#define DT_REG 2
a15c1c60 38#define DT_LNK 3
b6829693
ET
39#define DTYPE(de) DT_UNKNOWN
40#endif
41
40689ae1
MK
42/* unknown mode (impossible combination S_IFIFO|S_IFCHR) */
43#define S_IFINVALID 0030000
44
9eec4795
LT
45/*
46 * A "directory link" is a link to another git directory.
47 *
48 * The value 0160000 is not normally a valid mode, and
49 * also just happens to be S_IFDIR + S_IFLNK
50 *
51 * NOTE! We *really* shouldn't depend on the S_IFxxx macros
52 * always having the same values everywhere. We should use
53 * our internal git values for these things, and then we can
54 * translate that to the OS-specific value. It just so
55 * happens that everybody shares the same bit representation
56 * in the UNIX world (and apparently wider too..)
57 */
302b9282
MW
58#define S_IFGITLINK 0160000
59#define S_ISGITLINK(m) (((m) & S_IFMT) == S_IFGITLINK)
9eec4795 60
2386d658
LT
61/*
62 * Intensive research over the course of many years has shown that
63 * port 9418 is totally unused by anything else. Or
64 *
65 * Your search - "port 9418" - did not match any documents.
66 *
67 * as www.google.com puts it.
ba8a4970
LT
68 *
69 * This port has been properly assigned for git use by IANA:
70 * git (Assigned-9418) [I06-050728-0001].
71 *
72 * git 9418/tcp git pack transfer service
73 * git 9418/udp git pack transfer service
74 *
75 * with Linus Torvalds <torvalds@osdl.org> as the point of
76 * contact. September 2005.
77 *
78 * See http://www.iana.org/assignments/port-numbers
2386d658
LT
79 */
80#define DEFAULT_GIT_PORT 9418
81
e83c5163
LT
82/*
83 * Basic data structures for the directory cache
e83c5163
LT
84 */
85
86#define CACHE_SIGNATURE 0x44495243 /* "DIRC" */
87struct cache_header {
ccc4feb5
LT
88 unsigned int hdr_signature;
89 unsigned int hdr_version;
90 unsigned int hdr_entries;
e83c5163
LT
91};
92
93/*
94 * The "cache_time" is just the low 32 bits of the
95 * time. It doesn't matter if it overflows - we only
96 * check it for equality in the 32 bits we save.
97 */
98struct cache_time {
99 unsigned int sec;
100 unsigned int nsec;
101};
102
103/*
104 * dev/ino/uid/gid/size are also just tracked to the low 32 bits
105 * Again - this is just a (very strong in practice) heuristic that
106 * the inode hasn't changed.
ccc4feb5
LT
107 *
108 * We save the fields in big-endian order to allow using the
109 * index file over NFS transparently.
e83c5163 110 */
7a51ed66
LT
111struct ondisk_cache_entry {
112 struct cache_time ctime;
113 struct cache_time mtime;
114 unsigned int dev;
115 unsigned int ino;
116 unsigned int mode;
117 unsigned int uid;
118 unsigned int gid;
119 unsigned int size;
120 unsigned char sha1[20];
121 unsigned short flags;
122 char name[FLEX_ARRAY]; /* more */
123};
124
06aaaa0b
NTND
125/*
126 * This struct is used when CE_EXTENDED bit is 1
127 * The struct must match ondisk_cache_entry exactly from
128 * ctime till flags
129 */
130struct ondisk_cache_entry_extended {
131 struct cache_time ctime;
132 struct cache_time mtime;
133 unsigned int dev;
134 unsigned int ino;
135 unsigned int mode;
136 unsigned int uid;
137 unsigned int gid;
138 unsigned int size;
139 unsigned char sha1[20];
140 unsigned short flags;
141 unsigned short flags2;
142 char name[FLEX_ARRAY]; /* more */
143};
144
e83c5163 145struct cache_entry {
fba2f38a
KB
146 struct cache_time ce_ctime;
147 struct cache_time ce_mtime;
ccc4feb5
LT
148 unsigned int ce_dev;
149 unsigned int ce_ino;
150 unsigned int ce_mode;
151 unsigned int ce_uid;
152 unsigned int ce_gid;
153 unsigned int ce_size;
7a51ed66 154 unsigned int ce_flags;
e83c5163 155 unsigned char sha1[20];
eb7a2f1d 156 struct cache_entry *next;
8f1d2e6f 157 char name[FLEX_ARRAY]; /* more */
e83c5163
LT
158};
159
95fd5bf8
LT
160#define CE_NAMEMASK (0x0fff)
161#define CE_STAGEMASK (0x3000)
16ce2e4c 162#define CE_EXTENDED (0x4000)
5f73076c 163#define CE_VALID (0x8000)
aee46198 164#define CE_STAGESHIFT 12
95fd5bf8 165
06aaaa0b
NTND
166/*
167 * Range 0xFFFF0000 in ce_flags is divided into
168 * two parts: in-memory flags and on-disk ones.
169 * Flags in CE_EXTENDED_FLAGS will get saved on-disk
170 * if you want to save a new flag, add it in
171 * CE_EXTENDED_FLAGS
172 *
173 * In-memory only flags
174 */
2977ffbb
NTND
175#define CE_UPDATE (1 << 16)
176#define CE_REMOVE (1 << 17)
177#define CE_UPTODATE (1 << 18)
178#define CE_ADDED (1 << 19)
a22c6371 179
2977ffbb
NTND
180#define CE_HASHED (1 << 20)
181#define CE_UNHASHED (1 << 21)
182#define CE_WT_REMOVE (1 << 22) /* remove in work directory */
183#define CE_CONFLICTED (1 << 23)
7a51ed66 184
2977ffbb 185#define CE_UNPACKED (1 << 24)
2431afbf 186#define CE_NEW_SKIP_WORKTREE (1 << 25)
da165f47 187
06aaaa0b
NTND
188/*
189 * Extended on-disk flags
190 */
2977ffbb
NTND
191#define CE_INTENT_TO_ADD (1 << 29)
192#define CE_SKIP_WORKTREE (1 << 30)
06aaaa0b 193/* CE_EXTENDED2 is for future extension */
2977ffbb 194#define CE_EXTENDED2 (1 << 31)
06aaaa0b 195
44a36913 196#define CE_EXTENDED_FLAGS (CE_INTENT_TO_ADD | CE_SKIP_WORKTREE)
06aaaa0b
NTND
197
198/*
199 * Safeguard to avoid saving wrong flags:
200 * - CE_EXTENDED2 won't get saved until its semantic is known
201 * - Bits in 0x0000FFFF have been saved in ce_flags already
202 * - Bits in 0x003F0000 are currently in-memory flags
203 */
204#if CE_EXTENDED_FLAGS & 0x803FFFFF
205#error "CE_EXTENDED_FLAGS out of range"
206#endif
207
eb7a2f1d
LT
208/*
209 * Copy the sha1 and stat state of a cache entry from one to
210 * another. But we never change the name, or the hash state!
211 */
212#define CE_STATE_MASK (CE_HASHED | CE_UNHASHED)
213static inline void copy_cache_entry(struct cache_entry *dst, struct cache_entry *src)
214{
215 unsigned int state = dst->ce_flags & CE_STATE_MASK;
216
217 /* Don't copy hash chain and name */
218 memcpy(dst, src, offsetof(struct cache_entry, next));
219
220 /* Restore the hash state */
221 dst->ce_flags = (dst->ce_flags & ~CE_STATE_MASK) | state;
222}
223
7fec10b7
JH
224static inline unsigned create_ce_flags(size_t len, unsigned stage)
225{
226 if (len >= CE_NAMEMASK)
227 len = CE_NAMEMASK;
228 return (len | (stage << CE_STAGESHIFT));
229}
230
231static inline size_t ce_namelen(const struct cache_entry *ce)
232{
233 size_t len = ce->ce_flags & CE_NAMEMASK;
234 if (len < CE_NAMEMASK)
235 return len;
236 return strlen(ce->name + CE_NAMEMASK) + CE_NAMEMASK;
237}
238
aee46198 239#define ce_size(ce) cache_entry_size(ce_namelen(ce))
06aaaa0b
NTND
240#define ondisk_ce_size(ce) (((ce)->ce_flags & CE_EXTENDED) ? \
241 ondisk_cache_entry_extended_size(ce_namelen(ce)) : \
242 ondisk_cache_entry_size(ce_namelen(ce)))
7a51ed66 243#define ce_stage(ce) ((CE_STAGEMASK & (ce)->ce_flags) >> CE_STAGESHIFT)
eadb5831 244#define ce_uptodate(ce) ((ce)->ce_flags & CE_UPTODATE)
44a36913 245#define ce_skip_worktree(ce) ((ce)->ce_flags & CE_SKIP_WORKTREE)
eadb5831 246#define ce_mark_uptodate(ce) ((ce)->ce_flags |= CE_UPTODATE)
aee46198 247
e4479470 248#define ce_permissions(mode) (((mode) & 0100) ? 0755 : 0644)
8ae0a8c5
KS
249static inline unsigned int create_ce_mode(unsigned int mode)
250{
8ae0a8c5 251 if (S_ISLNK(mode))
7a51ed66 252 return S_IFLNK;
302b9282 253 if (S_ISDIR(mode) || S_ISGITLINK(mode))
7a51ed66
LT
254 return S_IFGITLINK;
255 return S_IFREG | ce_permissions(mode);
8ae0a8c5 256}
185c975f
JH
257static inline unsigned int ce_mode_from_stat(struct cache_entry *ce, unsigned int mode)
258{
78a8d641
JS
259 extern int trust_executable_bit, has_symlinks;
260 if (!has_symlinks && S_ISREG(mode) &&
7a51ed66 261 ce && S_ISLNK(ce->ce_mode))
78a8d641 262 return ce->ce_mode;
185c975f 263 if (!trust_executable_bit && S_ISREG(mode)) {
7a51ed66 264 if (ce && S_ISREG(ce->ce_mode))
185c975f
JH
265 return ce->ce_mode;
266 return create_ce_mode(0666);
267 }
268 return create_ce_mode(mode);
269}
d6b8fc30
JH
270static inline int ce_to_dtype(const struct cache_entry *ce)
271{
272 unsigned ce_mode = ntohl(ce->ce_mode);
273 if (S_ISREG(ce_mode))
274 return DT_REG;
275 else if (S_ISDIR(ce_mode) || S_ISGITLINK(ce_mode))
276 return DT_DIR;
277 else if (S_ISLNK(ce_mode))
278 return DT_LNK;
279 else
280 return DT_UNKNOWN;
281}
b90d9b88
RS
282static inline unsigned int canon_mode(unsigned int mode)
283{
284 if (S_ISREG(mode))
285 return S_IFREG | ce_permissions(mode);
286 if (S_ISLNK(mode))
287 return S_IFLNK;
288 if (S_ISDIR(mode))
289 return S_IFDIR;
290 return S_IFGITLINK;
291}
e4479470 292
06aaaa0b
NTND
293#define flexible_size(STRUCT,len) ((offsetof(struct STRUCT,name) + (len) + 8) & ~7)
294#define cache_entry_size(len) flexible_size(cache_entry,len)
295#define ondisk_cache_entry_size(len) flexible_size(ondisk_cache_entry,len)
296#define ondisk_cache_entry_extended_size(len) flexible_size(ondisk_cache_entry_extended,len)
f5cabd13 297
228e94f9
JH
298struct index_state {
299 struct cache_entry **cache;
300 unsigned int cache_nr, cache_alloc, cache_changed;
cfc5789a 301 struct string_list *resolve_undo;
228e94f9 302 struct cache_tree *cache_tree;
fba2f38a 303 struct cache_time timestamp;
7a51ed66 304 void *alloc;
913e0e99
JH
305 unsigned name_hash_initialized : 1,
306 initialized : 1;
cf558704 307 struct hash_table name_hash;
228e94f9
JH
308};
309
310extern struct index_state the_index;
311
96872bc2
LT
312/* Name hashing */
313extern void add_name_hash(struct index_state *istate, struct cache_entry *ce);
314/*
315 * We don't actually *remove* it, we can just mark it invalid so that
316 * we won't find it in lookups.
317 *
318 * Not only would we have to search the lists (simple enough), but
319 * we'd also have to rehash other hash buckets in case this makes the
320 * hash bucket empty (common). So it's much better to just mark
321 * it.
322 */
323static inline void remove_name_hash(struct cache_entry *ce)
324{
325 ce->ce_flags |= CE_UNHASHED;
326}
327
328
4aab5b46 329#ifndef NO_THE_INDEX_COMPATIBILITY_MACROS
228e94f9
JH
330#define active_cache (the_index.cache)
331#define active_nr (the_index.cache_nr)
332#define active_alloc (the_index.cache_alloc)
333#define active_cache_changed (the_index.cache_changed)
334#define active_cache_tree (the_index.cache_tree)
e83c5163 335
4aab5b46
JH
336#define read_cache() read_index(&the_index)
337#define read_cache_from(path) read_index_from(&the_index, (path))
671c9b7e 338#define read_cache_preload(pathspec) read_index_preload(&the_index, (pathspec))
fa7b3c2f 339#define is_cache_unborn() is_index_unborn(&the_index)
e46bbcf6 340#define read_cache_unmerged() read_index_unmerged(&the_index)
4aab5b46
JH
341#define write_cache(newfd, cache, entries) write_index(&the_index, (newfd))
342#define discard_cache() discard_index(&the_index)
94a5728c 343#define unmerged_cache() unmerged_index(&the_index)
4aab5b46
JH
344#define cache_name_pos(name, namelen) index_name_pos(&the_index,(name),(namelen))
345#define add_cache_entry(ce, option) add_index_entry(&the_index, (ce), (option))
81dc2307 346#define rename_cache_entry_at(pos, new_name) rename_index_entry_at(&the_index, (pos), (new_name))
4aab5b46
JH
347#define remove_cache_entry_at(pos) remove_index_entry_at(&the_index, (pos))
348#define remove_file_from_cache(path) remove_file_from_index(&the_index, (path))
38ed1d89
JH
349#define add_to_cache(path, st, flags) add_to_index(&the_index, (path), (st), (flags))
350#define add_file_to_cache(path, flags) add_file_to_index(&the_index, (path), (flags))
3deffc52 351#define refresh_cache(flags) refresh_index(&the_index, (flags), NULL, NULL, NULL)
4bd5b7da
JH
352#define ce_match_stat(ce, st, options) ie_match_stat(&the_index, (ce), (st), (options))
353#define ce_modified(ce, st, options) ie_modified(&the_index, (ce), (st), (options))
cd2fef59 354#define cache_name_exists(name, namelen, igncase) index_name_exists(&the_index, (name), (namelen), (igncase))
98fa4738 355#define cache_name_is_other(name, namelen) index_name_is_other(&the_index, (name), (namelen))
cfc5789a 356#define resolve_undo_clear() resolve_undo_clear_index(&the_index)
8aa38563 357#define unmerge_cache_entry_at(at) unmerge_index_entry_at(&the_index, at)
4421a823 358#define unmerge_cache(pathspec) unmerge_index(&the_index, pathspec)
4aab5b46 359#endif
e83c5163 360
edaec3fb
JH
361enum object_type {
362 OBJ_BAD = -1,
363 OBJ_NONE = 0,
364 OBJ_COMMIT = 1,
365 OBJ_TREE = 2,
366 OBJ_BLOB = 3,
367 OBJ_TAG = 4,
368 /* 5 for future expansion */
369 OBJ_OFS_DELTA = 6,
370 OBJ_REF_DELTA = 7,
355885d5 371 OBJ_ANY,
4b05548f 372 OBJ_MAX
edaec3fb
JH
373};
374
b45563a2
JH
375static inline enum object_type object_type(unsigned int mode)
376{
377 return S_ISDIR(mode) ? OBJ_TREE :
378 S_ISGITLINK(mode) ? OBJ_COMMIT :
379 OBJ_BLOB;
380}
381
8ac069ac 382#define GIT_DIR_ENVIRONMENT "GIT_DIR"
892c41b9 383#define GIT_WORK_TREE_ENVIRONMENT "GIT_WORK_TREE"
8ac069ac 384#define DEFAULT_GIT_DIR_ENVIRONMENT ".git"
d19938ab 385#define DB_ENVIRONMENT "GIT_OBJECT_DIRECTORY"
bb233d69 386#define INDEX_ENVIRONMENT "GIT_INDEX_FILE"
5da5c8f4 387#define GRAFT_ENVIRONMENT "GIT_GRAFT_FILE"
d4ebc36c
JH
388#define TEMPLATE_DIR_ENVIRONMENT "GIT_TEMPLATE_DIR"
389#define CONFIG_ENVIRONMENT "GIT_CONFIG"
2b64fc89 390#define CONFIG_DATA_ENVIRONMENT "GIT_CONFIG_PARAMETERS"
d4ebc36c 391#define EXEC_PATH_ENVIRONMENT "GIT_EXEC_PATH"
0454dd93 392#define CEILING_DIRECTORIES_ENVIRONMENT "GIT_CEILING_DIRECTORIES"
6476b38b 393#define NO_REPLACE_OBJECTS_ENVIRONMENT "GIT_NO_REPLACE_OBJECTS"
d0bfd026
JH
394#define GITATTRIBUTES_FILE ".gitattributes"
395#define INFOATTRIBUTES_FILE "info/attributes"
f48fd688 396#define ATTRIBUTE_MACRO_PREFIX "[attr]"
a97a7468
JS
397#define GIT_NOTES_REF_ENVIRONMENT "GIT_NOTES_REF"
398#define GIT_NOTES_DEFAULT_REF "refs/notes/commits"
894a9d33 399#define GIT_NOTES_DISPLAY_REF_ENVIRONMENT "GIT_NOTES_DISPLAY_REF"
6956f858
TR
400#define GIT_NOTES_REWRITE_REF_ENVIRONMENT "GIT_NOTES_REWRITE_REF"
401#define GIT_NOTES_REWRITE_MODE_ENVIRONMENT "GIT_NOTES_REWRITE_MODE"
bb233d69 402
48a7c1c4
GB
403/*
404 * Repository-local GIT_* environment variables
405 * The array is NULL-terminated to simplify its usage in contexts such
406 * environment creation or simple walk of the list.
407 * The number of non-NULL entries is available as a macro.
408 */
655e8d9c 409#define LOCAL_REPO_ENV_SIZE 9
48a7c1c4
GB
410extern const char *const local_repo_env[LOCAL_REPO_ENV_SIZE + 1];
411
7d1864ce
JH
412extern int is_bare_repository_cfg;
413extern int is_bare_repository(void);
68025633 414extern int is_inside_git_dir(void);
e90fdc39 415extern char *git_work_tree_cfg;
892c41b9 416extern int is_inside_work_tree(void);
d2b0708e 417extern int have_git_dir(void);
c5fba16c 418extern const char *get_git_dir(void);
8ac069ac
JH
419extern char *get_object_directory(void);
420extern char *get_index_file(void);
5da5c8f4 421extern char *get_graft_file(void);
d7ac12b2 422extern int set_git_dir(const char *path);
e90fdc39 423extern const char *get_git_work_tree(void);
b44ebb19 424extern const char *read_gitfile_gently(const char *path);
19757d80 425extern void set_git_work_tree(const char *tree);
8ac069ac
JH
426
427#define ALTERNATE_DB_ENVIRONMENT "GIT_ALTERNATE_OBJECT_DIRECTORIES"
bb233d69 428
6b5ee137 429extern const char **get_pathspec(const char *prefix, const char **pathspec);
59f0f2f3 430extern void setup_work_tree(void);
4ca06608 431extern const char *setup_git_directory_gently(int *);
d288a700 432extern const char *setup_git_directory(void);
edc54fb5 433extern char *prefix_path(const char *prefix, int len, const char *path);
4ca06608 434extern const char *prefix_filename(const char *prefix, int len, const char *path);
c6e8c800 435extern int check_filename(const char *prefix, const char *name);
e23d0b4a 436extern void verify_filename(const char *prefix, const char *name);
ea92f41f 437extern void verify_non_filename(const char *prefix, const char *name);
d288a700 438
f225aeb2
DB
439#define INIT_DB_QUIET 0x0001
440
b57fb80a 441extern int set_git_dir_init(const char *git_dir, const char *real_git_dir, int);
f225aeb2
DB
442extern int init_db(const char *template_dir, unsigned int flags);
443
e83c5163
LT
444#define alloc_nr(x) (((x)+16)*3/2)
445
6815e569
JK
446/*
447 * Realloc the buffer pointed at by variable 'x' so that it can hold
448 * at least 'nr' entries; the number of entries currently allocated
449 * is 'alloc', using the standard growing factor alloc_nr() macro.
450 *
01f6fd4b 451 * DO NOT USE any expression with side-effect for 'x', 'nr', or 'alloc'.
6815e569
JK
452 */
453#define ALLOC_GROW(x, nr, alloc) \
454 do { \
c927e6c6 455 if ((nr) > alloc) { \
4234a761
JH
456 if (alloc_nr(alloc) < (nr)) \
457 alloc = (nr); \
458 else \
459 alloc = alloc_nr(alloc); \
6815e569
JK
460 x = xrealloc((x), alloc * sizeof(*(x))); \
461 } \
98746061 462 } while (0)
6815e569 463
734aab75 464/* Initialize and use the cache information */
4aab5b46 465extern int read_index(struct index_state *);
671c9b7e 466extern int read_index_preload(struct index_state *, const char **pathspec);
4aab5b46 467extern int read_index_from(struct index_state *, const char *path);
fa7b3c2f 468extern int is_index_unborn(struct index_state *);
e46bbcf6 469extern int read_index_unmerged(struct index_state *);
e1afca4f 470extern int write_index(struct index_state *, int newfd);
4aab5b46 471extern int discard_index(struct index_state *);
d1f128b0 472extern int unmerged_index(const struct index_state *);
8dcf39c4 473extern int verify_path(const char *path);
cd2fef59 474extern struct cache_entry *index_name_exists(struct index_state *istate, const char *name, int namelen, int igncase);
d1f128b0 475extern int index_name_pos(const struct index_state *, const char *name, int namelen);
192268c1
JH
476#define ADD_CACHE_OK_TO_ADD 1 /* Ok to add */
477#define ADD_CACHE_OK_TO_REPLACE 2 /* Ok to replace file/directory */
b155725d 478#define ADD_CACHE_SKIP_DFCHECK 4 /* Ok to skip DF conflict checks */
af3785dc 479#define ADD_CACHE_JUST_APPEND 8 /* Append only; tree.c::read_tree() */
39425819 480#define ADD_CACHE_NEW_ONLY 16 /* Do not replace existing ones */
4aab5b46 481extern int add_index_entry(struct index_state *, struct cache_entry *ce, int option);
81dc2307 482extern void rename_index_entry_at(struct index_state *, int pos, const char *new_name);
4aab5b46 483extern int remove_index_entry_at(struct index_state *, int pos);
36419c8e 484extern void remove_marked_cache_entries(struct index_state *istate);
4aab5b46 485extern int remove_file_from_index(struct index_state *, const char *path);
38ed1d89
JH
486#define ADD_CACHE_VERBOSE 1
487#define ADD_CACHE_PRETEND 2
01665924 488#define ADD_CACHE_IGNORE_ERRORS 4
041aee31 489#define ADD_CACHE_IGNORE_REMOVAL 8
39425819 490#define ADD_CACHE_INTENT 16
38ed1d89
JH
491extern int add_to_index(struct index_state *, const char *path, struct stat *, int flags);
492extern int add_file_to_index(struct index_state *, const char *path, int flags);
6640f881 493extern struct cache_entry *make_cache_entry(unsigned int mode, const unsigned char *sha1, const char *path, int stage, int refresh);
dbbce55b 494extern int ce_same_name(struct cache_entry *a, struct cache_entry *b);
98fa4738 495extern int index_name_is_other(const struct index_state *, const char *, int);
4bd5b7da
JH
496
497/* do stat comparison even if CE_VALID is true */
498#define CE_MATCH_IGNORE_VALID 01
499/* do not check the contents but report dirty on racily-clean entries */
56cac48c
NTND
500#define CE_MATCH_RACY_IS_DIRTY 02
501/* do stat comparison even if CE_SKIP_WORKTREE is true */
502#define CE_MATCH_IGNORE_SKIP_WORKTREE 04
d1f128b0
LT
503extern int ie_match_stat(const struct index_state *, struct cache_entry *, struct stat *, unsigned int);
504extern int ie_modified(const struct index_state *, struct cache_entry *, struct stat *, unsigned int);
4bd5b7da 505
0602f3e9
NTND
506struct pathspec {
507 const char **raw; /* get_pathspec() result, not freed by free_pathspec() */
508 int nr;
9ddf1726
JN
509 unsigned int has_wildcard:1;
510 unsigned int recursive:1;
bc96cc87 511 int max_depth;
0602f3e9
NTND
512 struct pathspec_item {
513 const char *match;
514 int len;
33e0f62b 515 unsigned int use_wildcard:1;
0602f3e9
NTND
516 } *items;
517};
518
519extern int init_pathspec(struct pathspec *, const char **);
520extern void free_pathspec(struct pathspec *);
eb9cb55b 521extern int ce_path_match(const struct cache_entry *ce, const struct pathspec *pathspec);
c4ce46fc
JH
522
523#define HASH_WRITE_OBJECT 1
524#define HASH_FORMAT_CHECK 2
525extern int index_fd(unsigned char *sha1, int fd, struct stat *st, enum object_type type, const char *path, unsigned flags);
526extern int index_path(unsigned char *sha1, const char *path, struct stat *st, unsigned flags);
415e96c8
JH
527extern void fill_stat_cache_info(struct cache_entry *ce, struct stat *st);
528
405e5b2f
LT
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 */
3f1b7b60 533#define REFRESH_IGNORE_SUBMODULES 0x0010 /* ignore submodules */
43673fdd 534#define REFRESH_IN_PORCELAIN 0x0020 /* user friendly output, not "needs update" */
046613c5 535extern int refresh_index(struct index_state *, unsigned int flags, const char **pathspec, char *seen, const char *header_msg);
405e5b2f 536
021b6e45
JH
537struct lock_file {
538 struct lock_file *next;
4723ee99 539 int fd;
5e635e39 540 pid_t owner;
1084b845 541 char on_list;
021b6e45 542 char filename[PATH_MAX];
415e96c8 543};
acd3b9ec
JH
544#define LOCK_DIE_ON_ERROR 1
545#define LOCK_NODEREF 2
1b018fd9 546extern int unable_to_lock_error(const char *path, int err);
e43a6fd3 547extern NORETURN void unable_to_lock_index_die(const char *path, int err);
40aaae88 548extern int hold_lock_file_for_update(struct lock_file *, const char *path, int);
ea3cd5c7 549extern int hold_lock_file_for_append(struct lock_file *, const char *path, int);
021b6e45 550extern int commit_lock_file(struct lock_file *);
ccdc4ec3 551extern void update_index_if_able(struct index_state *, struct lock_file *);
30ca07a2
JH
552
553extern int hold_locked_index(struct lock_file *, int);
554extern int commit_locked_index(struct lock_file *);
5e7f56ac 555extern void set_alternate_index_output(const char *);
d6cf61bf 556extern int close_lock_file(struct lock_file *);
021b6e45 557extern void rollback_lock_file(struct lock_file *);
eca35a25 558extern int delete_ref(const char *, const unsigned char *sha1, int delopt);
734aab75 559
2ae1c53b 560/* Environment bits from configuration mechanism */
17712991 561extern int trust_executable_bit;
1ce4790b 562extern int trust_ctime;
9378c161 563extern int quote_path_fully;
78a8d641 564extern int has_symlinks;
dce96489 565extern int minimum_abbrev, default_abbrev;
0a9b88b7 566extern int ignore_case;
5f73076c 567extern int assume_unchanged;
9f0bb90d 568extern int prefer_symlink_refs;
6de08ae6 569extern int log_all_ref_updates;
2f8acdb3 570extern int warn_ambiguous_refs;
457f06d6 571extern int shared_repository;
2ae1c53b 572extern const char *apply_default_whitespace;
86c91f91 573extern const char *apply_default_ignorewhitespace;
12f6c308 574extern int zlib_compression_level;
960ccca6
DH
575extern int core_compression_level;
576extern int core_compression_seen;
60bb8b14 577extern size_t packed_git_window_size;
77ccc5bb 578extern size_t packed_git_limit;
18bdec11 579extern size_t delta_base_cache_limit;
15366280 580extern unsigned long big_file_threshold;
dae556bd 581extern int read_replace_refs;
aafe9fba 582extern int fsync_object_files;
671c9b7e 583extern int core_preload_index;
08aefc9e 584extern int core_apply_sparse_checkout;
17712991 585
9ed36cfa 586enum branch_track {
9188ed89 587 BRANCH_TRACK_UNSPECIFIED = -1,
9ed36cfa
JS
588 BRANCH_TRACK_NEVER = 0,
589 BRANCH_TRACK_REMOTE,
590 BRANCH_TRACK_ALWAYS,
591 BRANCH_TRACK_EXPLICIT,
4b05548f 592 BRANCH_TRACK_OVERRIDE
9ed36cfa
JS
593};
594
c998ae9b
DS
595enum rebase_setup_type {
596 AUTOREBASE_NEVER = 0,
597 AUTOREBASE_LOCAL,
598 AUTOREBASE_REMOTE,
4b05548f 599 AUTOREBASE_ALWAYS
c998ae9b
DS
600};
601
52153747 602enum push_default_type {
52153747
FAG
603 PUSH_DEFAULT_NOTHING = 0,
604 PUSH_DEFAULT_MATCHING,
53c40311 605 PUSH_DEFAULT_UPSTREAM,
4b05548f 606 PUSH_DEFAULT_CURRENT
52153747
FAG
607};
608
9ed36cfa 609extern enum branch_track git_branch_track;
c998ae9b 610extern enum rebase_setup_type autorebase;
52153747 611extern enum push_default_type push_default;
9ed36cfa 612
348df166
JS
613enum object_creation_mode {
614 OBJECT_CREATION_USES_HARDLINKS = 0,
4b05548f 615 OBJECT_CREATION_USES_RENAMES = 1
348df166
JS
616};
617
618extern enum object_creation_mode object_creation_mode;
be66a6c4 619
a97a7468
JS
620extern char *notes_ref_name;
621
7f3140cd
JS
622extern int grafts_replace_parents;
623
ab9cb76f
JH
624#define GIT_REPO_VERSION 0
625extern int repository_format_version;
626extern int check_repository_format(void);
627
734aab75
LT
628#define MTIME_CHANGED 0x0001
629#define CTIME_CHANGED 0x0002
630#define OWNER_CHANGED 0x0004
631#define MODE_CHANGED 0x0008
632#define INODE_CHANGED 0x0010
633#define DATA_CHANGED 0x0020
8ae0a8c5 634#define TYPE_CHANGED 0x0040
e83c5163 635
108bebea
AR
636extern char *mksnpath(char *buf, size_t n, const char *fmt, ...)
637 __attribute__((format (printf, 3, 4)));
fe2d7776
AR
638extern char *git_snpath(char *buf, size_t n, const char *fmt, ...)
639 __attribute__((format (printf, 3, 4)));
aba13e7c
AR
640extern char *git_pathdup(const char *fmt, ...)
641 __attribute__((format (printf, 1, 2)));
108bebea 642
e83c5163 643/* Return a statically allocated filename matching the sha1 signature */
4ec99bf0
TS
644extern char *mkpath(const char *fmt, ...) __attribute__((format (printf, 1, 2)));
645extern char *git_path(const char *fmt, ...) __attribute__((format (printf, 1, 2)));
0bad611b
HV
646extern char *git_path_submodule(const char *path, const char *fmt, ...)
647 __attribute__((format (printf, 2, 3)));
648
73134b6d 649extern char *sha1_file_name(const unsigned char *sha1);
bf592c50
DB
650extern char *sha1_pack_name(const unsigned char *sha1);
651extern char *sha1_pack_index_name(const unsigned char *sha1);
013f276e 652extern const char *find_unique_abbrev(const unsigned char *sha1, int);
88cd621d 653extern const unsigned char null_sha1[20];
1a812f3a
IM
654
655static inline int hashcmp(const unsigned char *sha1, const unsigned char *sha2)
0bef57ee 656{
1a812f3a
IM
657 int i;
658
659 for (i = 0; i < 20; i++, sha1++, sha2++) {
660 if (*sha1 != *sha2)
661 return *sha1 - *sha2;
662 }
663
664 return 0;
0bef57ee 665}
1a812f3a
IM
666
667static inline int is_null_sha1(const unsigned char *sha1)
a89fccd2 668{
1a812f3a 669 return !hashcmp(sha1, null_sha1);
a89fccd2 670}
1a812f3a 671
e702496e
SP
672static inline void hashcpy(unsigned char *sha_dst, const unsigned char *sha_src)
673{
674 memcpy(sha_dst, sha_src, 20);
675}
a8e0d16d
JH
676static inline void hashclr(unsigned char *hash)
677{
678 memset(hash, 0, 20);
679}
e83c5163 680
14d9c578
JK
681#define EMPTY_TREE_SHA1_HEX \
682 "4b825dc642cb6eb9a060e54bf8d69288fbee4904"
dab0d410 683#define EMPTY_TREE_SHA1_BIN_LITERAL \
14d9c578
JK
684 "\x4b\x82\x5d\xc6\x42\xcb\x6e\xb9\xa0\x60" \
685 "\xe5\x4b\xf8\xd6\x92\x88\xfb\xee\x49\x04"
dab0d410
JN
686#define EMPTY_TREE_SHA1_BIN \
687 ((const unsigned char *) EMPTY_TREE_SHA1_BIN_LITERAL)
14d9c578 688
f2db68ed
HE
689int git_mkstemp(char *path, size_t n, const char *template);
690
003b33a8
DA
691int git_mkstemps(char *path, size_t n, const char *template, int suffix_len);
692
b862b61c
MM
693/* set default permissions by passing mode arguments to open(2) */
694int git_mkstemps_mode(char *pattern, int suffix_len, int mode);
695int git_mkstemp_mode(char *pattern, int mode);
696
06cbe855
HO
697/*
698 * NOTE NOTE NOTE!!
699 *
700 * PERM_UMASK, OLD_PERM_GROUP and OLD_PERM_EVERYBODY enumerations must
701 * not be changed. Old repositories have core.sharedrepository written in
702 * numeric format, and therefore these values are preserved for compatibility
703 * reasons.
704 */
94df2506 705enum sharedrepo {
06cbe855
HO
706 PERM_UMASK = 0,
707 OLD_PERM_GROUP = 1,
708 OLD_PERM_EVERYBODY = 2,
709 PERM_GROUP = 0660,
4b05548f 710 PERM_EVERYBODY = 0664
94df2506
JH
711};
712int git_config_perm(const char *var, const char *value);
17e61b82
JH
713int set_shared_perm(const char *path, int mode);
714#define adjust_shared_perm(path) set_shared_perm((path), 0)
b2cb9425 715int safe_create_leading_directories(char *path);
8e21d63b 716int safe_create_leading_directories_const(const char *path);
90a6464b 717int mkdir_in_gitdir(const char *path);
395de250 718extern char *expand_user_path(const char *path);
bd22c904 719char *enter_repo(char *path, int strict);
e5392c51
JS
720static inline int is_absolute_path(const char *path)
721{
88135203 722 return is_dir_sep(path[0]) || has_dos_drive_prefix(path);
e5392c51 723}
90b4a71c 724int is_directory(const char *);
e2a57aac
CMN
725const char *real_path(const char *path);
726const char *absolute_path(const char *path);
727const char *relative_path(const char *abs, const char *base);
f3cad0ad 728int normalize_path_copy(char *dst, const char *src);
0454dd93 729int longest_ancestor_length(const char *path, const char *prefix_list);
4fcc86b0 730char *strip_path_suffix(const char *path, const char *suffix);
34b6cb8b 731int daemon_avoid_alias(const char *path);
4bb43de2 732int offset_1st_component(const char *path);
b2cb9425 733
e1111cef 734/* object replacement */
5bf29b95
JH
735#define READ_SHA1_FILE_REPLACE 1
736extern void *read_sha1_file_extended(const unsigned char *sha1, enum object_type *type, unsigned long *size, unsigned flag);
f5552aee
CC
737static inline void *read_sha1_file(const unsigned char *sha1, enum object_type *type, unsigned long *size)
738{
5bf29b95
JH
739 return read_sha1_file_extended(sha1, type, size, READ_SHA1_FILE_REPLACE);
740}
e1111cef
JH
741extern const unsigned char *do_lookup_replace_object(const unsigned char *sha1);
742static inline const unsigned char *lookup_replace_object(const unsigned char *sha1)
743{
744 if (!read_replace_refs)
745 return sha1;
746 return do_lookup_replace_object(sha1);
f5552aee 747}
e1111cef 748
e83c5163 749/* Read and unpack a sha1 file into memory, write memory to a sha1 file */
21666f1a 750extern int sha1_object_info(const unsigned char *, unsigned long *);
ce9fbf16 751extern int hash_sha1_file(const void *buf, unsigned long len, const char *type, unsigned char *sha1);
c00e657d 752extern int write_sha1_file(const void *buf, unsigned long len, const char *type, unsigned char *return_sha1);
21666f1a 753extern int pretend_sha1_file(void *, unsigned long, enum object_type, unsigned char *);
bbac7311 754extern int force_object_loose(const unsigned char *sha1, time_t mtime);
f0270efd
JH
755extern void *map_sha1_file(const unsigned char *sha1, unsigned long *size);
756extern int unpack_sha1_header(z_stream *stream, unsigned char *map, unsigned long mapsize, void *buffer, unsigned long bufsiz);
757extern int parse_sha1_header(const char *hdr, unsigned long *sizep);
8237b185 758
0e8189e2
NP
759/* global flag to enable extra checks when accessing packed objects */
760extern int do_check_packed_object_crc;
761
5d6ccf5c 762extern int check_sha1_signature(const unsigned char *sha1, void *buf, unsigned long size, const char *type);
e83c5163 763
839837b9 764extern int move_temp_to_file(const char *tmpfile, const char *filename);
8237b185 765
cd673c1f 766extern int has_sha1_pack(const unsigned char *sha1);
8237b185 767extern int has_sha1_file(const unsigned char *sha1);
0f4dc14a 768extern int has_loose_object_nonlocal(const unsigned char *sha1);
8237b185 769
bf592c50
DB
770extern int has_pack_index(const unsigned char *sha1);
771
40d52ff7
JK
772extern void assert_sha1_type(const unsigned char *sha1, enum object_type expect);
773
192a6be2
LT
774extern const signed char hexval_table[256];
775static inline unsigned int hexval(unsigned char c)
e49521b5
JH
776{
777 return hexval_table[c];
778}
779
e83c5163 780/* Convert to/from hex/sha1 representation */
dce96489
LT
781#define MINIMUM_ABBREV minimum_abbrev
782#define DEFAULT_ABBREV default_abbrev
46a6c262 783
573285e5
CP
784struct object_context {
785 unsigned char tree[20];
786 char path[PATH_MAX];
787 unsigned mode;
788};
789
3c249c95 790extern int get_sha1(const char *str, unsigned char *sha1);
2e83b66c 791extern int get_sha1_with_mode_1(const char *str, unsigned char *sha1, unsigned *mode, int only_to_die, const char *prefix);
009fee47
MM
792static inline int get_sha1_with_mode(const char *str, unsigned char *sha1, unsigned *mode)
793{
2e83b66c 794 return get_sha1_with_mode_1(str, sha1, mode, 0, NULL);
009fee47 795}
2e83b66c 796extern int get_sha1_with_context_1(const char *name, unsigned char *sha1, struct object_context *orc, int only_to_die, const char *prefix);
573285e5
CP
797static inline int get_sha1_with_context(const char *str, unsigned char *sha1, struct object_context *orc)
798{
2e83b66c 799 return get_sha1_with_context_1(str, sha1, orc, 0, NULL);
573285e5 800}
197ee8c9
LT
801extern int get_sha1_hex(const char *hex, unsigned char *sha1);
802extern char *sha1_to_hex(const unsigned char *sha1); /* static buffer result! */
ca8db142 803extern int read_ref(const char *filename, unsigned char *sha1);
8da19775 804extern const char *resolve_ref(const char *path, unsigned char *sha1, int, int *);
e86eb666 805extern int dwim_ref(const char *str, int len, unsigned char *sha1, char **ref);
eb3a4822 806extern int dwim_log(const char *str, int len, unsigned char *sha1, char **ref);
431b1969 807extern int interpret_branch_name(const char *str, struct strbuf *);
619a644d 808extern int get_sha1_mb(const char *str, unsigned char *sha1);
e86eb666 809
79803322
SP
810extern int refname_match(const char *abbrev_name, const char *full_name, const char **rules);
811extern const char *ref_rev_parse_rules[];
605b4978 812extern const char *ref_fetch_rules[];
79803322 813
8b5157e4 814extern int create_symref(const char *ref, const char *refs_heads_master, const char *logmsg);
c847f537 815extern int validate_headref(const char *ref);
e83c5163 816
958ba6c9 817extern int base_name_compare(const char *name1, int len1, int mode1, const char *name2, int len2, int mode2);
0ab9e1e8 818extern int df_name_compare(const char *name1, int len1, int mode1, const char *name2, int len2, int mode2);
79517a06 819extern int cache_name_compare(const char *name1, int len1, const char *name2, int len2);
e83c5163 820
40469ee9 821extern void *read_object_with_reference(const unsigned char *sha1,
bf0f910d 822 const char *required_type,
40469ee9
JH
823 unsigned long *size,
824 unsigned char *sha1_ret);
f4913f91 825
81776315
JH
826extern struct object *peel_to_type(const char *name, int namelen,
827 struct object *o, enum object_type);
828
73013afd
JH
829enum date_mode {
830 DATE_NORMAL = 0,
831 DATE_RELATIVE,
832 DATE_SHORT,
833 DATE_LOCAL,
834 DATE_ISO8601,
7dff9b30
LT
835 DATE_RFC2822,
836 DATE_RAW
73013afd
JH
837};
838
f8493ec0 839const char *show_date(unsigned long time, int timezone, enum date_mode mode);
33012fc4
AR
840const char *show_date_relative(unsigned long time, int tz,
841 const struct timeval *now,
842 char *timebuf,
843 size_t timebuf_size);
2a39064c 844int parse_date(const char *date, char *buf, int bufsize);
9644c061 845int parse_date_basic(const char *date, unsigned long *timestamp, int *offset);
ecee9d9e 846void datestamp(char *buf, int bufsize);
93cfa7c7
JH
847#define approxidate(s) approxidate_careful((s), NULL)
848unsigned long approxidate_careful(const char *, int *);
33012fc4 849unsigned long approxidate_relative(const char *date, const struct timeval *now);
856665f8 850enum date_mode parse_date_format(const char *format);
ecee9d9e 851
774751a8
JH
852#define IDENT_WARN_ON_NO_NAME 1
853#define IDENT_ERROR_ON_NO_NAME 2
854#define IDENT_NO_DATE 4
749be728
JH
855extern const char *git_author_info(int);
856extern const char *git_committer_info(int);
798123af 857extern const char *fmt_ident(const char *name, const char *email, const char *date_str, int);
d9ccfe77 858extern const char *fmt_name(const char *name, const char *email);
44fcb497 859extern const char *git_editor(void);
64778d24 860extern const char *git_pager(int stdout_is_tty);
6aa33f40 861
12dccc16
LT
862struct checkout {
863 const char *base_dir;
864 int base_dir_len;
865 unsigned force:1,
866 quiet:1,
867 not_new:1,
868 refresh_cache:1;
869};
870
efbc5831 871extern int checkout_entry(struct cache_entry *ce, const struct checkout *state, char *topath);
b9fd2846
LT
872
873struct cache_def {
874 char path[PATH_MAX + 1];
875 int len;
876 int flags;
877 int track_flags;
878 int prefix_len_stat_func;
879};
880
57199892 881extern int has_symlink_leading_path(const char *name, int len);
b9fd2846 882extern int threaded_has_symlink_leading_path(struct cache_def *, const char *, int);
f66caaf9 883extern int check_leading_path(const char *name, int len);
57199892 884extern int has_dirs_only_path(const char *name, int len, int prefix_len);
78478927
KB
885extern void schedule_dir_for_removal(const char *name, int len);
886extern void remove_scheduled_dirs(void);
12dccc16 887
9a217f2a 888extern struct alternate_object_database {
d5a63b99 889 struct alternate_object_database *next;
9a217f2a 890 char *name;
8f1d2e6f 891 char base[FLEX_ARRAY]; /* more */
d5a63b99 892} *alt_odb_list;
9a217f2a 893extern void prepare_alt_odb(void);
bef70b22 894extern void add_to_alternates_file(const char *reference);
d79796bc
JH
895typedef int alt_odb_fn(struct alternate_object_database *, void *);
896extern void foreach_alt_odb(alt_odb_fn, void*);
9a217f2a 897
c41ee586
SP
898struct pack_window {
899 struct pack_window *next;
900 unsigned char *base;
901 off_t offset;
902 size_t len;
903 unsigned int last_used;
904 unsigned int inuse_cnt;
905};
906
9a217f2a
JH
907extern struct packed_git {
908 struct packed_git *next;
c41ee586 909 struct pack_window *windows;
2dc3a234 910 off_t pack_size;
57059091
NP
911 const void *index_data;
912 size_t index_size;
913 uint32_t num_objects;
8eca0b47
NP
914 uint32_t num_bad_objects;
915 unsigned char *bad_object_sha1;
42873078 916 int index_version;
57059091 917 time_t mtime;
9bc879c1 918 int pack_fd;
8d25931d 919 unsigned pack_local:1,
d131b7af
SP
920 pack_keep:1,
921 do_not_close:1;
bf592c50 922 unsigned char sha1[20];
8f1d2e6f
JH
923 /* something like ".git/objects/pack/xxxxx.pack" */
924 char pack_name[FLEX_ARRAY]; /* more */
9a217f2a 925} *packed_git;
f3bf9224
JH
926
927struct pack_entry {
c4001d92 928 off_t offset;
f3bf9224
JH
929 unsigned char sha1[20];
930 struct packed_git *p;
931};
932
d1c133f5
LT
933struct ref {
934 struct ref *next;
935 unsigned char old_sha1[20];
936 unsigned char new_sha1[20];
be885d96 937 char *symref;
9f8a15c7
SP
938 unsigned int force:1,
939 merge:1,
940 nonfastforward:1,
941 deletion:1;
8736a848
JK
942 enum {
943 REF_STATUS_NONE = 0,
944 REF_STATUS_OK,
945 REF_STATUS_REJECT_NONFASTFORWARD,
946 REF_STATUS_REJECT_NODELETE,
947 REF_STATUS_UPTODATE,
ca74c458 948 REF_STATUS_REMOTE_REJECT,
4b05548f 949 REF_STATUS_EXPECTING_REPORT
8736a848 950 } status;
2a0fe89a 951 char *remote_status;
f88395ac 952 struct ref *peer_ref; /* when renaming */
8f1d2e6f 953 char name[FLEX_ARRAY]; /* more */
d1c133f5
LT
954};
955
2718ff09
LT
956#define REF_NORMAL (1u << 0)
957#define REF_HEADS (1u << 1)
958#define REF_TAGS (1u << 2)
959
5483f799 960extern struct ref *find_ref_by_name(const struct ref *list, const char *name);
cda69f48 961
7841ce79 962#define CONNECT_VERBOSE (1u << 0)
f206063b 963extern char *git_getpass(const char *prompt);
4577370e 964extern struct child_process *git_connect(int fd[2], const char *url, const char *prog, int flags);
98158e9c 965extern int finish_connect(struct child_process *conn);
7ffe853b 966extern int git_connection_is_socket(struct child_process *conn);
013e7c7f 967extern int path_match(const char *path, int nr, char **match);
40c155ff
JH
968struct extra_have_objects {
969 int nr, alloc;
970 unsigned char (*array)[20];
971};
972extern struct ref **get_remote_heads(int in, struct ref **list, int nr_match, char **match, unsigned int flags, struct extra_have_objects *);
211b5f9e 973extern int server_supports(const char *feature);
f7192598 974
7b64469a 975extern struct packed_git *parse_pack_index(unsigned char *sha1, const char *idx_path);
bf592c50 976
9a217f2a 977extern void prepare_packed_git(void);
fc04c412 978extern void reprepare_packed_git(void);
bf592c50
DB
979extern void install_packed_git(struct packed_git *pack);
980
a6080a0a 981extern struct packed_git *find_sha1_pack(const unsigned char *sha1,
bf592c50
DB
982 struct packed_git *packs);
983
276bc2ca 984extern void pack_report(void);
d079837e 985extern int open_pack_index(struct packed_git *);
fa5fc15d 986extern void close_pack_index(struct packed_git *);
4b25d091 987extern unsigned char *use_pack(struct packed_git *, struct pack_window **, off_t, unsigned int *);
c9ced051 988extern void close_pack_windows(struct packed_git *);
03e79c88 989extern void unuse_pack(struct pack_window **);
c74faea1 990extern void free_pack_by_name(const char *);
3d20c636 991extern void clear_delta_base_cache(void);
42873078 992extern struct packed_git *add_packed_git(const char *, int, int);
d079837e 993extern const unsigned char *nth_packed_object_sha1(struct packed_git *, uint32_t);
99093238 994extern off_t nth_packed_object_offset(const struct packed_git *, uint32_t);
c4001d92
SP
995extern off_t find_pack_entry_one(const unsigned char *, struct packed_git *);
996extern void *unpack_entry(struct packed_git *, off_t, enum object_type *, unsigned long *);
09ded04b 997extern unsigned long unpack_object_header_buffer(const unsigned char *buf, unsigned long len, enum object_type *type, unsigned long *sizep);
54dab52a 998extern unsigned long get_size_from_delta(struct packed_git *, struct pack_window **, off_t);
b9a62cbe 999extern int packed_object_info_detail(struct packed_git *, off_t, unsigned long *, unsigned long *, unsigned int *, unsigned char *);
f8c8abc5 1000extern int unpack_object_header(struct packed_git *, struct pack_window **, off_t *, unsigned long *);
9a217f2a 1001
9a490590
JH
1002struct object_info {
1003 /* Request */
1004 unsigned long *sizep;
1005
1006 /* Response */
1007 enum {
1008 OI_CACHED,
1009 OI_LOOSE,
5266d369
JH
1010 OI_PACKED,
1011 OI_DBCACHED
9a490590
JH
1012 } whence;
1013 union {
1014 /*
1015 * struct {
1016 * ... Nothing to expose in this case
1017 * } cached;
1018 * struct {
1019 * ... Nothing to expose in this case
1020 * } loose;
1021 */
1022 struct {
1023 struct packed_git *pack;
1024 off_t offset;
1025 unsigned int is_delta;
1026 } packed;
1027 } u;
1028};
1029extern int sha1_object_info_extended(const unsigned char *, struct object_info *);
9a217f2a 1030
8f3f9b09
JH
1031/* Dumb servers support */
1032extern int update_server_info(int);
1033
7a397419
MG
1034/* git_config_parse_key() returns these negated: */
1035#define CONFIG_INVALID_KEY 1
1036#define CONFIG_NO_SECTION_OR_NAME 2
1037/* git_config_set(), git_config_set_multivar() return the above or these: */
1038#define CONFIG_NO_LOCK -1
1039#define CONFIG_INVALID_FILE 3
1040#define CONFIG_NO_WRITE 4
1041#define CONFIG_NOTHING_SET 5
1042#define CONFIG_INVALID_PATTERN 6
1043
ef90d6d4
JS
1044typedef int (*config_fn_t)(const char *, const char *, void *);
1045extern int git_default_config(const char *, const char *, void *);
1046extern int git_config_from_file(config_fn_t fn, const char *, void *);
2b64fc89 1047extern void git_config_push_parameter(const char *text);
b3d83d9f 1048extern int git_config_from_parameters(config_fn_t fn, void *data);
ef90d6d4 1049extern int git_config(config_fn_t fn, void *);
dbdf5854 1050extern int git_config_early(config_fn_t fn, void *, const char *repo_config);
0b87b6e0 1051extern int git_parse_ulong(const char *, unsigned long *);
17712991 1052extern int git_config_int(const char *, const char *);
0b87b6e0 1053extern unsigned long git_config_ulong(const char *, const char *);
a53f2ec6 1054extern int git_config_bool_or_int(const char *, const char *, int *);
17712991 1055extern int git_config_bool(const char *, const char *);
8420ccd8 1056extern int git_config_maybe_bool(const char *, const char *);
ea5105a5 1057extern int git_config_string(const char **, const char *, const char *);
395de250 1058extern int git_config_pathname(const char **, const char *, const char *);
10bea152 1059extern int git_config_set(const char *, const char *);
b09c53a3 1060extern int git_config_parse_key(const char *, char **, int *);
4ddba79d 1061extern int git_config_set_multivar(const char *, const char *, const char *, int);
0667fcfb 1062extern int git_config_rename_section(const char *, const char *);
506b17b1 1063extern const char *git_etc_gitconfig(void);
ef90d6d4 1064extern int check_repository_format_version(const char *var, const char *value, void *cb);
0ef37164 1065extern int git_env_bool(const char *, int);
ab88c363 1066extern int git_config_system(void);
40ea4ed9 1067extern int config_error_nonbool(const char *);
a6fa5992
PN
1068extern const char *get_log_output_encoding(void);
1069extern const char *get_commit_output_encoding(void);
1070
dc871831 1071extern const char *config_exclusive_filename;
17712991 1072
e1b10391
LT
1073#define MAX_GITNAME (1000)
1074extern char git_default_email[MAX_GITNAME];
1075extern char git_default_name[MAX_GITNAME];
91c38a21
JH
1076#define IDENT_NAME_GIVEN 01
1077#define IDENT_MAIL_GIVEN 02
1078#define IDENT_ALL_GIVEN (IDENT_NAME_GIVEN|IDENT_MAIL_GIVEN)
bb1ae3f6 1079extern int user_ident_explicitly_given;
5aeb3a3a 1080extern int user_ident_sufficiently_given(void);
e1b10391 1081
1a8f2741 1082extern const char *git_commit_encoding;
3a55602e 1083extern const char *git_log_output_encoding;
d551a488 1084extern const char *git_mailmap_file;
4e72dcec 1085
06f59e9f
TT
1086/* IO helper functions */
1087extern void maybe_flush_or_die(FILE *, const char *);
f3123c4a 1088extern int copy_fd(int ifd, int ofd);
1468bd47 1089extern int copy_file(const char *dst, const char *src, int mode);
f7835a25 1090extern int copy_file_with_time(const char *dst, const char *src, int mode);
7230e6d0 1091extern void write_or_die(int fd, const void *buf, size_t count);
6ce4e61f 1092extern int write_or_whine(int fd, const void *buf, size_t count, const char *msg);
e0814056 1093extern int write_or_whine_pipe(int fd, const void *buf, size_t count, const char *msg);
4c81b03e 1094extern void fsync_or_die(int fd, const char *);
ad897215 1095
2b7ca830
JM
1096extern ssize_t read_in_full(int fd, void *buf, size_t count);
1097extern ssize_t write_in_full(int fd, const void *buf, size_t count);
1098static inline ssize_t write_str_in_full(int fd, const char *str)
1099{
1100 return write_in_full(fd, str, strlen(str));
1101}
1102
f67b45f8
LT
1103/* pager.c */
1104extern void setup_pager(void);
872da32d 1105extern const char *pager_program;
6e9af863 1106extern int pager_in_use(void);
aa086eb8 1107extern int pager_use_color;
f67b45f8 1108
ee9601e6 1109extern const char *editor_program;
d3e7da89 1110extern const char *askpass_program;
dfb068be 1111extern const char *excludes_file;
4d87b9c5 1112
051308f6 1113/* base85 */
f9815772
JM
1114int decode_85(char *dst, const char *line, int linelen);
1115void encode_85(char *buf, const unsigned char *data, int bytes);
051308f6 1116
855419f7 1117/* alloc.c */
100c5f3b
LT
1118extern void *alloc_blob_node(void);
1119extern void *alloc_tree_node(void);
1120extern void *alloc_commit_node(void);
1121extern void *alloc_tag_node(void);
1122extern void *alloc_object_node(void);
855419f7
LT
1123extern void alloc_report(void);
1124
6ce4e61f 1125/* trace.c */
28bea9e5 1126__attribute__((format (printf, 1, 2)))
6ce4e61f 1127extern void trace_printf(const char *format, ...);
06796607 1128extern void trace_vprintf(const char *key, const char *format, va_list ap);
28bea9e5 1129__attribute__((format (printf, 2, 3)))
b319ce4c 1130extern void trace_argv_printf(const char **argv, const char *format, ...);
a9ca8a85 1131extern void trace_repo_setup(const char *prefix);
39bc5e46 1132extern int trace_want(const char *key);
94b3b374 1133extern void trace_strbuf(const char *key, const struct strbuf *buf);
6ce4e61f 1134
bbc30f99 1135void packet_trace_identity(const char *prog);
6ce4e61f 1136
b6ec1d61 1137/* add */
7ae02a30
AR
1138/*
1139 * return 0 if success, 1 - if addition of a file failed and
1140 * ADD_FILES_IGNORE_ERRORS was specified in flags
1141 */
1142int add_files_to_cache(const char *prefix, const char **pathspec, int flags);
b6ec1d61 1143
aecbf914
JH
1144/* diff.c */
1145extern int diff_auto_refresh_index;
1146
68faf689
JH
1147/* match-trees.c */
1148void shift_tree(const unsigned char *, const unsigned char *, unsigned char *, int);
85e51b78 1149void shift_tree_by(const unsigned char *, const unsigned char *, unsigned char *, const char *);
68faf689 1150
a9cc857a
JH
1151/*
1152 * whitespace rules.
1153 * used by both diff and apply
f4b05a49 1154 * last two digits are tab width
a9cc857a 1155 */
f4b05a49
JS
1156#define WS_BLANK_AT_EOL 0100
1157#define WS_SPACE_BEFORE_TAB 0200
1158#define WS_INDENT_WITH_NON_TAB 0400
1159#define WS_CR_AT_EOL 01000
1160#define WS_BLANK_AT_EOF 02000
1161#define WS_TAB_IN_INDENT 04000
aeb84b05 1162#define WS_TRAILING_SPACE (WS_BLANK_AT_EOL|WS_BLANK_AT_EOF)
f4b05a49
JS
1163#define WS_DEFAULT_RULE (WS_TRAILING_SPACE|WS_SPACE_BEFORE_TAB|8)
1164#define WS_TAB_WIDTH_MASK 077
cf1b7869
JH
1165extern unsigned whitespace_rule_cfg;
1166extern unsigned whitespace_rule(const char *);
1167extern unsigned parse_whitespace_rule(const char *);
8f8841e9
JH
1168extern unsigned ws_check(const char *line, int len, unsigned ws_rule);
1169extern void ws_check_emit(const char *line, int len, unsigned ws_rule, FILE *stream, const char *set, const char *reset, const char *ws);
c1795bb0 1170extern char *whitespace_error_string(unsigned ws);
d511bd33 1171extern void ws_fix_copy(struct strbuf *, const char *, int, unsigned, int *);
877f23cc 1172extern int ws_blank_line(const char *line, int len, unsigned ws_rule);
f4b05a49 1173#define ws_tab_width(rule) ((rule) & WS_TAB_WIDTH_MASK)
a9cc857a 1174
ee425e46 1175/* ls-files */
ee425e46
JH
1176int report_path_error(const char *ps_matched, const char **pathspec, int prefix_offset);
1177void overlay_tree_on_cache(const char *tree_name, const char *prefix);
1178
94351118 1179char *alias_lookup(const char *alias);
0989fe96 1180int split_cmdline(char *cmdline, const char ***argv);
ad9ac6db
GB
1181/* Takes a negative value returned by split_cmdline */
1182const char *split_cmdline_strerror(int cmdline_errno);
94351118 1183
e37c1329
NTND
1184/* git.c */
1185struct startup_info {
a60645f9 1186 int have_repository;
f07d6a1a 1187 const char *prefix;
e37c1329
NTND
1188};
1189extern struct startup_info *startup_info;
1190
cac42b26
JH
1191/* builtin/merge.c */
1192int checkout_fast_forward(const unsigned char *from, const unsigned char *to);
1193
e83c5163 1194#endif /* CACHE_H */