Git 1.7.4.1
[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"
e83c5163 8
cef661fc 9#include SHA1_HEADER
9126f009
NP
10#ifndef git_SHA_CTX
11#define git_SHA_CTX SHA_CTX
12#define git_SHA1_Init SHA1_Init
13#define git_SHA1_Update SHA1_Update
14#define git_SHA1_Final SHA1_Final
15#endif
e83c5163 16
9126f009 17#include <zlib.h>
609a2289 18#if defined(NO_DEFLATE_BOUND) || ZLIB_VERNUM < 0x1200
9da3acfb
ET
19#define deflateBound(c,s) ((s) + (((s) + 7) >> 3) + (((s) + 63) >> 6) + 11)
20#endif
21
39c68542
LT
22void git_inflate_init(z_streamp strm);
23void git_inflate_end(z_streamp strm);
24int git_inflate(z_streamp strm, int flush);
25
962554c6 26#if defined(DT_UNKNOWN) && !defined(NO_D_TYPE_IN_DIRENT)
b6829693
ET
27#define DTYPE(de) ((de)->d_type)
28#else
0bdd79af
JH
29#undef DT_UNKNOWN
30#undef DT_DIR
31#undef DT_REG
32#undef DT_LNK
b6829693
ET
33#define DT_UNKNOWN 0
34#define DT_DIR 1
35#define DT_REG 2
a15c1c60 36#define DT_LNK 3
b6829693
ET
37#define DTYPE(de) DT_UNKNOWN
38#endif
39
40689ae1
MK
40/* unknown mode (impossible combination S_IFIFO|S_IFCHR) */
41#define S_IFINVALID 0030000
42
9eec4795
LT
43/*
44 * A "directory link" is a link to another git directory.
45 *
46 * The value 0160000 is not normally a valid mode, and
47 * also just happens to be S_IFDIR + S_IFLNK
48 *
49 * NOTE! We *really* shouldn't depend on the S_IFxxx macros
50 * always having the same values everywhere. We should use
51 * our internal git values for these things, and then we can
52 * translate that to the OS-specific value. It just so
53 * happens that everybody shares the same bit representation
54 * in the UNIX world (and apparently wider too..)
55 */
302b9282
MW
56#define S_IFGITLINK 0160000
57#define S_ISGITLINK(m) (((m) & S_IFMT) == S_IFGITLINK)
9eec4795 58
2386d658
LT
59/*
60 * Intensive research over the course of many years has shown that
61 * port 9418 is totally unused by anything else. Or
62 *
63 * Your search - "port 9418" - did not match any documents.
64 *
65 * as www.google.com puts it.
ba8a4970
LT
66 *
67 * This port has been properly assigned for git use by IANA:
68 * git (Assigned-9418) [I06-050728-0001].
69 *
70 * git 9418/tcp git pack transfer service
71 * git 9418/udp git pack transfer service
72 *
73 * with Linus Torvalds <torvalds@osdl.org> as the point of
74 * contact. September 2005.
75 *
76 * See http://www.iana.org/assignments/port-numbers
2386d658
LT
77 */
78#define DEFAULT_GIT_PORT 9418
79
e83c5163
LT
80/*
81 * Basic data structures for the directory cache
e83c5163
LT
82 */
83
84#define CACHE_SIGNATURE 0x44495243 /* "DIRC" */
85struct cache_header {
ccc4feb5
LT
86 unsigned int hdr_signature;
87 unsigned int hdr_version;
88 unsigned int hdr_entries;
e83c5163
LT
89};
90
91/*
92 * The "cache_time" is just the low 32 bits of the
93 * time. It doesn't matter if it overflows - we only
94 * check it for equality in the 32 bits we save.
95 */
96struct cache_time {
97 unsigned int sec;
98 unsigned int nsec;
99};
100
101/*
102 * dev/ino/uid/gid/size are also just tracked to the low 32 bits
103 * Again - this is just a (very strong in practice) heuristic that
104 * the inode hasn't changed.
ccc4feb5
LT
105 *
106 * We save the fields in big-endian order to allow using the
107 * index file over NFS transparently.
e83c5163 108 */
7a51ed66
LT
109struct ondisk_cache_entry {
110 struct cache_time ctime;
111 struct cache_time mtime;
112 unsigned int dev;
113 unsigned int ino;
114 unsigned int mode;
115 unsigned int uid;
116 unsigned int gid;
117 unsigned int size;
118 unsigned char sha1[20];
119 unsigned short flags;
120 char name[FLEX_ARRAY]; /* more */
121};
122
06aaaa0b
NTND
123/*
124 * This struct is used when CE_EXTENDED bit is 1
125 * The struct must match ondisk_cache_entry exactly from
126 * ctime till flags
127 */
128struct ondisk_cache_entry_extended {
129 struct cache_time ctime;
130 struct cache_time mtime;
131 unsigned int dev;
132 unsigned int ino;
133 unsigned int mode;
134 unsigned int uid;
135 unsigned int gid;
136 unsigned int size;
137 unsigned char sha1[20];
138 unsigned short flags;
139 unsigned short flags2;
140 char name[FLEX_ARRAY]; /* more */
141};
142
e83c5163 143struct cache_entry {
fba2f38a
KB
144 struct cache_time ce_ctime;
145 struct cache_time ce_mtime;
ccc4feb5
LT
146 unsigned int ce_dev;
147 unsigned int ce_ino;
148 unsigned int ce_mode;
149 unsigned int ce_uid;
150 unsigned int ce_gid;
151 unsigned int ce_size;
7a51ed66 152 unsigned int ce_flags;
e83c5163 153 unsigned char sha1[20];
eb7a2f1d 154 struct cache_entry *next;
8f1d2e6f 155 char name[FLEX_ARRAY]; /* more */
e83c5163
LT
156};
157
95fd5bf8
LT
158#define CE_NAMEMASK (0x0fff)
159#define CE_STAGEMASK (0x3000)
16ce2e4c 160#define CE_EXTENDED (0x4000)
5f73076c 161#define CE_VALID (0x8000)
aee46198 162#define CE_STAGESHIFT 12
95fd5bf8 163
06aaaa0b
NTND
164/*
165 * Range 0xFFFF0000 in ce_flags is divided into
166 * two parts: in-memory flags and on-disk ones.
167 * Flags in CE_EXTENDED_FLAGS will get saved on-disk
168 * if you want to save a new flag, add it in
169 * CE_EXTENDED_FLAGS
170 *
171 * In-memory only flags
172 */
2977ffbb
NTND
173#define CE_UPDATE (1 << 16)
174#define CE_REMOVE (1 << 17)
175#define CE_UPTODATE (1 << 18)
176#define CE_ADDED (1 << 19)
a22c6371 177
2977ffbb
NTND
178#define CE_HASHED (1 << 20)
179#define CE_UNHASHED (1 << 21)
180#define CE_WT_REMOVE (1 << 22) /* remove in work directory */
181#define CE_CONFLICTED (1 << 23)
7a51ed66 182
2977ffbb 183#define CE_UNPACKED (1 << 24)
2431afbf 184#define CE_NEW_SKIP_WORKTREE (1 << 25)
da165f47 185
06aaaa0b
NTND
186/*
187 * Extended on-disk flags
188 */
2977ffbb
NTND
189#define CE_INTENT_TO_ADD (1 << 29)
190#define CE_SKIP_WORKTREE (1 << 30)
06aaaa0b 191/* CE_EXTENDED2 is for future extension */
2977ffbb 192#define CE_EXTENDED2 (1 << 31)
06aaaa0b 193
44a36913 194#define CE_EXTENDED_FLAGS (CE_INTENT_TO_ADD | CE_SKIP_WORKTREE)
06aaaa0b
NTND
195
196/*
197 * Safeguard to avoid saving wrong flags:
198 * - CE_EXTENDED2 won't get saved until its semantic is known
199 * - Bits in 0x0000FFFF have been saved in ce_flags already
200 * - Bits in 0x003F0000 are currently in-memory flags
201 */
202#if CE_EXTENDED_FLAGS & 0x803FFFFF
203#error "CE_EXTENDED_FLAGS out of range"
204#endif
205
eb7a2f1d
LT
206/*
207 * Copy the sha1 and stat state of a cache entry from one to
208 * another. But we never change the name, or the hash state!
209 */
210#define CE_STATE_MASK (CE_HASHED | CE_UNHASHED)
211static inline void copy_cache_entry(struct cache_entry *dst, struct cache_entry *src)
212{
213 unsigned int state = dst->ce_flags & CE_STATE_MASK;
214
215 /* Don't copy hash chain and name */
216 memcpy(dst, src, offsetof(struct cache_entry, next));
217
218 /* Restore the hash state */
219 dst->ce_flags = (dst->ce_flags & ~CE_STATE_MASK) | state;
220}
221
7fec10b7
JH
222static inline unsigned create_ce_flags(size_t len, unsigned stage)
223{
224 if (len >= CE_NAMEMASK)
225 len = CE_NAMEMASK;
226 return (len | (stage << CE_STAGESHIFT));
227}
228
229static inline size_t ce_namelen(const struct cache_entry *ce)
230{
231 size_t len = ce->ce_flags & CE_NAMEMASK;
232 if (len < CE_NAMEMASK)
233 return len;
234 return strlen(ce->name + CE_NAMEMASK) + CE_NAMEMASK;
235}
236
aee46198 237#define ce_size(ce) cache_entry_size(ce_namelen(ce))
06aaaa0b
NTND
238#define ondisk_ce_size(ce) (((ce)->ce_flags & CE_EXTENDED) ? \
239 ondisk_cache_entry_extended_size(ce_namelen(ce)) : \
240 ondisk_cache_entry_size(ce_namelen(ce)))
7a51ed66 241#define ce_stage(ce) ((CE_STAGEMASK & (ce)->ce_flags) >> CE_STAGESHIFT)
eadb5831 242#define ce_uptodate(ce) ((ce)->ce_flags & CE_UPTODATE)
44a36913 243#define ce_skip_worktree(ce) ((ce)->ce_flags & CE_SKIP_WORKTREE)
eadb5831 244#define ce_mark_uptodate(ce) ((ce)->ce_flags |= CE_UPTODATE)
aee46198 245
e4479470 246#define ce_permissions(mode) (((mode) & 0100) ? 0755 : 0644)
8ae0a8c5
KS
247static inline unsigned int create_ce_mode(unsigned int mode)
248{
8ae0a8c5 249 if (S_ISLNK(mode))
7a51ed66 250 return S_IFLNK;
302b9282 251 if (S_ISDIR(mode) || S_ISGITLINK(mode))
7a51ed66
LT
252 return S_IFGITLINK;
253 return S_IFREG | ce_permissions(mode);
8ae0a8c5 254}
185c975f
JH
255static inline unsigned int ce_mode_from_stat(struct cache_entry *ce, unsigned int mode)
256{
78a8d641
JS
257 extern int trust_executable_bit, has_symlinks;
258 if (!has_symlinks && S_ISREG(mode) &&
7a51ed66 259 ce && S_ISLNK(ce->ce_mode))
78a8d641 260 return ce->ce_mode;
185c975f 261 if (!trust_executable_bit && S_ISREG(mode)) {
7a51ed66 262 if (ce && S_ISREG(ce->ce_mode))
185c975f
JH
263 return ce->ce_mode;
264 return create_ce_mode(0666);
265 }
266 return create_ce_mode(mode);
267}
d6b8fc30
JH
268static inline int ce_to_dtype(const struct cache_entry *ce)
269{
270 unsigned ce_mode = ntohl(ce->ce_mode);
271 if (S_ISREG(ce_mode))
272 return DT_REG;
273 else if (S_ISDIR(ce_mode) || S_ISGITLINK(ce_mode))
274 return DT_DIR;
275 else if (S_ISLNK(ce_mode))
276 return DT_LNK;
277 else
278 return DT_UNKNOWN;
279}
b90d9b88
RS
280static inline unsigned int canon_mode(unsigned int mode)
281{
282 if (S_ISREG(mode))
283 return S_IFREG | ce_permissions(mode);
284 if (S_ISLNK(mode))
285 return S_IFLNK;
286 if (S_ISDIR(mode))
287 return S_IFDIR;
288 return S_IFGITLINK;
289}
e4479470 290
06aaaa0b
NTND
291#define flexible_size(STRUCT,len) ((offsetof(struct STRUCT,name) + (len) + 8) & ~7)
292#define cache_entry_size(len) flexible_size(cache_entry,len)
293#define ondisk_cache_entry_size(len) flexible_size(ondisk_cache_entry,len)
294#define ondisk_cache_entry_extended_size(len) flexible_size(ondisk_cache_entry_extended,len)
f5cabd13 295
228e94f9
JH
296struct index_state {
297 struct cache_entry **cache;
298 unsigned int cache_nr, cache_alloc, cache_changed;
cfc5789a 299 struct string_list *resolve_undo;
228e94f9 300 struct cache_tree *cache_tree;
fba2f38a 301 struct cache_time timestamp;
7a51ed66 302 void *alloc;
913e0e99
JH
303 unsigned name_hash_initialized : 1,
304 initialized : 1;
cf558704 305 struct hash_table name_hash;
228e94f9
JH
306};
307
308extern struct index_state the_index;
309
96872bc2
LT
310/* Name hashing */
311extern void add_name_hash(struct index_state *istate, struct cache_entry *ce);
312/*
313 * We don't actually *remove* it, we can just mark it invalid so that
314 * we won't find it in lookups.
315 *
316 * Not only would we have to search the lists (simple enough), but
317 * we'd also have to rehash other hash buckets in case this makes the
318 * hash bucket empty (common). So it's much better to just mark
319 * it.
320 */
321static inline void remove_name_hash(struct cache_entry *ce)
322{
323 ce->ce_flags |= CE_UNHASHED;
324}
325
326
4aab5b46 327#ifndef NO_THE_INDEX_COMPATIBILITY_MACROS
228e94f9
JH
328#define active_cache (the_index.cache)
329#define active_nr (the_index.cache_nr)
330#define active_alloc (the_index.cache_alloc)
331#define active_cache_changed (the_index.cache_changed)
332#define active_cache_tree (the_index.cache_tree)
e83c5163 333
4aab5b46
JH
334#define read_cache() read_index(&the_index)
335#define read_cache_from(path) read_index_from(&the_index, (path))
671c9b7e 336#define read_cache_preload(pathspec) read_index_preload(&the_index, (pathspec))
fa7b3c2f 337#define is_cache_unborn() is_index_unborn(&the_index)
e46bbcf6 338#define read_cache_unmerged() read_index_unmerged(&the_index)
4aab5b46
JH
339#define write_cache(newfd, cache, entries) write_index(&the_index, (newfd))
340#define discard_cache() discard_index(&the_index)
94a5728c 341#define unmerged_cache() unmerged_index(&the_index)
4aab5b46
JH
342#define cache_name_pos(name, namelen) index_name_pos(&the_index,(name),(namelen))
343#define add_cache_entry(ce, option) add_index_entry(&the_index, (ce), (option))
81dc2307 344#define rename_cache_entry_at(pos, new_name) rename_index_entry_at(&the_index, (pos), (new_name))
4aab5b46
JH
345#define remove_cache_entry_at(pos) remove_index_entry_at(&the_index, (pos))
346#define remove_file_from_cache(path) remove_file_from_index(&the_index, (path))
38ed1d89
JH
347#define add_to_cache(path, st, flags) add_to_index(&the_index, (path), (st), (flags))
348#define add_file_to_cache(path, flags) add_file_to_index(&the_index, (path), (flags))
3deffc52 349#define refresh_cache(flags) refresh_index(&the_index, (flags), NULL, NULL, NULL)
4bd5b7da
JH
350#define ce_match_stat(ce, st, options) ie_match_stat(&the_index, (ce), (st), (options))
351#define ce_modified(ce, st, options) ie_modified(&the_index, (ce), (st), (options))
cd2fef59 352#define cache_name_exists(name, namelen, igncase) index_name_exists(&the_index, (name), (namelen), (igncase))
98fa4738 353#define cache_name_is_other(name, namelen) index_name_is_other(&the_index, (name), (namelen))
cfc5789a 354#define resolve_undo_clear() resolve_undo_clear_index(&the_index)
8aa38563 355#define unmerge_cache_entry_at(at) unmerge_index_entry_at(&the_index, at)
4421a823 356#define unmerge_cache(pathspec) unmerge_index(&the_index, pathspec)
4aab5b46 357#endif
e83c5163 358
edaec3fb
JH
359enum object_type {
360 OBJ_BAD = -1,
361 OBJ_NONE = 0,
362 OBJ_COMMIT = 1,
363 OBJ_TREE = 2,
364 OBJ_BLOB = 3,
365 OBJ_TAG = 4,
366 /* 5 for future expansion */
367 OBJ_OFS_DELTA = 6,
368 OBJ_REF_DELTA = 7,
355885d5 369 OBJ_ANY,
4b05548f 370 OBJ_MAX
edaec3fb
JH
371};
372
b45563a2
JH
373static inline enum object_type object_type(unsigned int mode)
374{
375 return S_ISDIR(mode) ? OBJ_TREE :
376 S_ISGITLINK(mode) ? OBJ_COMMIT :
377 OBJ_BLOB;
378}
379
8ac069ac 380#define GIT_DIR_ENVIRONMENT "GIT_DIR"
892c41b9 381#define GIT_WORK_TREE_ENVIRONMENT "GIT_WORK_TREE"
8ac069ac 382#define DEFAULT_GIT_DIR_ENVIRONMENT ".git"
d19938ab 383#define DB_ENVIRONMENT "GIT_OBJECT_DIRECTORY"
bb233d69 384#define INDEX_ENVIRONMENT "GIT_INDEX_FILE"
5da5c8f4 385#define GRAFT_ENVIRONMENT "GIT_GRAFT_FILE"
d4ebc36c
JH
386#define TEMPLATE_DIR_ENVIRONMENT "GIT_TEMPLATE_DIR"
387#define CONFIG_ENVIRONMENT "GIT_CONFIG"
2b64fc89 388#define CONFIG_DATA_ENVIRONMENT "GIT_CONFIG_PARAMETERS"
d4ebc36c 389#define EXEC_PATH_ENVIRONMENT "GIT_EXEC_PATH"
0454dd93 390#define CEILING_DIRECTORIES_ENVIRONMENT "GIT_CEILING_DIRECTORIES"
6476b38b 391#define NO_REPLACE_OBJECTS_ENVIRONMENT "GIT_NO_REPLACE_OBJECTS"
d0bfd026
JH
392#define GITATTRIBUTES_FILE ".gitattributes"
393#define INFOATTRIBUTES_FILE "info/attributes"
f48fd688 394#define ATTRIBUTE_MACRO_PREFIX "[attr]"
a97a7468
JS
395#define GIT_NOTES_REF_ENVIRONMENT "GIT_NOTES_REF"
396#define GIT_NOTES_DEFAULT_REF "refs/notes/commits"
894a9d33 397#define GIT_NOTES_DISPLAY_REF_ENVIRONMENT "GIT_NOTES_DISPLAY_REF"
6956f858
TR
398#define GIT_NOTES_REWRITE_REF_ENVIRONMENT "GIT_NOTES_REWRITE_REF"
399#define GIT_NOTES_REWRITE_MODE_ENVIRONMENT "GIT_NOTES_REWRITE_MODE"
bb233d69 400
48a7c1c4
GB
401/*
402 * Repository-local GIT_* environment variables
403 * The array is NULL-terminated to simplify its usage in contexts such
404 * environment creation or simple walk of the list.
405 * The number of non-NULL entries is available as a macro.
406 */
655e8d9c 407#define LOCAL_REPO_ENV_SIZE 9
48a7c1c4
GB
408extern const char *const local_repo_env[LOCAL_REPO_ENV_SIZE + 1];
409
7d1864ce
JH
410extern int is_bare_repository_cfg;
411extern int is_bare_repository(void);
68025633 412extern int is_inside_git_dir(void);
e90fdc39 413extern char *git_work_tree_cfg;
892c41b9 414extern int is_inside_work_tree(void);
d2b0708e 415extern int have_git_dir(void);
c5fba16c 416extern const char *get_git_dir(void);
8ac069ac
JH
417extern char *get_object_directory(void);
418extern char *get_index_file(void);
5da5c8f4 419extern char *get_graft_file(void);
d7ac12b2 420extern int set_git_dir(const char *path);
e90fdc39 421extern const char *get_git_work_tree(void);
b44ebb19 422extern const char *read_gitfile_gently(const char *path);
19757d80 423extern void set_git_work_tree(const char *tree);
8ac069ac
JH
424
425#define ALTERNATE_DB_ENVIRONMENT "GIT_ALTERNATE_OBJECT_DIRECTORIES"
bb233d69 426
6b5ee137 427extern const char **get_pathspec(const char *prefix, const char **pathspec);
59f0f2f3 428extern void setup_work_tree(void);
4ca06608 429extern const char *setup_git_directory_gently(int *);
d288a700 430extern const char *setup_git_directory(void);
edc54fb5 431extern char *prefix_path(const char *prefix, int len, const char *path);
4ca06608 432extern const char *prefix_filename(const char *prefix, int len, const char *path);
c6e8c800 433extern int check_filename(const char *prefix, const char *name);
e23d0b4a 434extern void verify_filename(const char *prefix, const char *name);
ea92f41f 435extern void verify_non_filename(const char *prefix, const char *name);
d288a700 436
f225aeb2
DB
437#define INIT_DB_QUIET 0x0001
438
439extern int init_db(const char *template_dir, unsigned int flags);
440
e83c5163
LT
441#define alloc_nr(x) (((x)+16)*3/2)
442
6815e569
JK
443/*
444 * Realloc the buffer pointed at by variable 'x' so that it can hold
445 * at least 'nr' entries; the number of entries currently allocated
446 * is 'alloc', using the standard growing factor alloc_nr() macro.
447 *
01f6fd4b 448 * DO NOT USE any expression with side-effect for 'x', 'nr', or 'alloc'.
6815e569
JK
449 */
450#define ALLOC_GROW(x, nr, alloc) \
451 do { \
c927e6c6 452 if ((nr) > alloc) { \
4234a761
JH
453 if (alloc_nr(alloc) < (nr)) \
454 alloc = (nr); \
455 else \
456 alloc = alloc_nr(alloc); \
6815e569
JK
457 x = xrealloc((x), alloc * sizeof(*(x))); \
458 } \
98746061 459 } while (0)
6815e569 460
734aab75 461/* Initialize and use the cache information */
4aab5b46 462extern int read_index(struct index_state *);
671c9b7e 463extern int read_index_preload(struct index_state *, const char **pathspec);
4aab5b46 464extern int read_index_from(struct index_state *, const char *path);
fa7b3c2f 465extern int is_index_unborn(struct index_state *);
e46bbcf6 466extern int read_index_unmerged(struct index_state *);
e1afca4f 467extern int write_index(struct index_state *, int newfd);
4aab5b46 468extern int discard_index(struct index_state *);
d1f128b0 469extern int unmerged_index(const struct index_state *);
8dcf39c4 470extern int verify_path(const char *path);
cd2fef59 471extern struct cache_entry *index_name_exists(struct index_state *istate, const char *name, int namelen, int igncase);
d1f128b0 472extern int index_name_pos(const struct index_state *, const char *name, int namelen);
192268c1
JH
473#define ADD_CACHE_OK_TO_ADD 1 /* Ok to add */
474#define ADD_CACHE_OK_TO_REPLACE 2 /* Ok to replace file/directory */
b155725d 475#define ADD_CACHE_SKIP_DFCHECK 4 /* Ok to skip DF conflict checks */
af3785dc 476#define ADD_CACHE_JUST_APPEND 8 /* Append only; tree.c::read_tree() */
39425819 477#define ADD_CACHE_NEW_ONLY 16 /* Do not replace existing ones */
4aab5b46 478extern int add_index_entry(struct index_state *, struct cache_entry *ce, int option);
81dc2307 479extern void rename_index_entry_at(struct index_state *, int pos, const char *new_name);
4aab5b46 480extern int remove_index_entry_at(struct index_state *, int pos);
36419c8e 481extern void remove_marked_cache_entries(struct index_state *istate);
4aab5b46 482extern int remove_file_from_index(struct index_state *, const char *path);
38ed1d89
JH
483#define ADD_CACHE_VERBOSE 1
484#define ADD_CACHE_PRETEND 2
01665924 485#define ADD_CACHE_IGNORE_ERRORS 4
041aee31 486#define ADD_CACHE_IGNORE_REMOVAL 8
39425819 487#define ADD_CACHE_INTENT 16
38ed1d89
JH
488extern int add_to_index(struct index_state *, const char *path, struct stat *, int flags);
489extern int add_file_to_index(struct index_state *, const char *path, int flags);
6640f881 490extern struct cache_entry *make_cache_entry(unsigned int mode, const unsigned char *sha1, const char *path, int stage, int refresh);
dbbce55b 491extern int ce_same_name(struct cache_entry *a, struct cache_entry *b);
98fa4738 492extern int index_name_is_other(const struct index_state *, const char *, int);
4bd5b7da
JH
493
494/* do stat comparison even if CE_VALID is true */
495#define CE_MATCH_IGNORE_VALID 01
496/* do not check the contents but report dirty on racily-clean entries */
56cac48c
NTND
497#define CE_MATCH_RACY_IS_DIRTY 02
498/* do stat comparison even if CE_SKIP_WORKTREE is true */
499#define CE_MATCH_IGNORE_SKIP_WORKTREE 04
d1f128b0
LT
500extern int ie_match_stat(const struct index_state *, struct cache_entry *, struct stat *, unsigned int);
501extern int ie_modified(const struct index_state *, struct cache_entry *, struct stat *, unsigned int);
4bd5b7da 502
c0fd1f51 503extern int ce_path_match(const struct cache_entry *ce, const char **pathspec);
53bca91a 504extern int index_fd(unsigned char *sha1, int fd, struct stat *st, int write_object, enum object_type type, const char *path);
ec1fcc16 505extern int index_path(unsigned char *sha1, const char *path, struct stat *st, int write_object);
415e96c8
JH
506extern void fill_stat_cache_info(struct cache_entry *ce, struct stat *st);
507
405e5b2f
LT
508#define REFRESH_REALLY 0x0001 /* ignore_valid */
509#define REFRESH_UNMERGED 0x0002 /* allow unmerged */
510#define REFRESH_QUIET 0x0004 /* be quiet about it */
511#define REFRESH_IGNORE_MISSING 0x0008 /* ignore non-existent */
3f1b7b60 512#define REFRESH_IGNORE_SUBMODULES 0x0010 /* ignore submodules */
43673fdd 513#define REFRESH_IN_PORCELAIN 0x0020 /* user friendly output, not "needs update" */
3deffc52 514extern int refresh_index(struct index_state *, unsigned int flags, const char **pathspec, char *seen, char *header_msg);
405e5b2f 515
021b6e45
JH
516struct lock_file {
517 struct lock_file *next;
4723ee99 518 int fd;
5e635e39 519 pid_t owner;
1084b845 520 char on_list;
021b6e45 521 char filename[PATH_MAX];
415e96c8 522};
acd3b9ec
JH
523#define LOCK_DIE_ON_ERROR 1
524#define LOCK_NODEREF 2
1b018fd9 525extern int unable_to_lock_error(const char *path, int err);
e43a6fd3 526extern NORETURN void unable_to_lock_index_die(const char *path, int err);
40aaae88 527extern int hold_lock_file_for_update(struct lock_file *, const char *path, int);
ea3cd5c7 528extern int hold_lock_file_for_append(struct lock_file *, const char *path, int);
021b6e45 529extern int commit_lock_file(struct lock_file *);
30ca07a2
JH
530
531extern int hold_locked_index(struct lock_file *, int);
532extern int commit_locked_index(struct lock_file *);
5e7f56ac 533extern void set_alternate_index_output(const char *);
d6cf61bf 534extern int close_lock_file(struct lock_file *);
021b6e45 535extern void rollback_lock_file(struct lock_file *);
eca35a25 536extern int delete_ref(const char *, const unsigned char *sha1, int delopt);
734aab75 537
2ae1c53b 538/* Environment bits from configuration mechanism */
17712991 539extern int trust_executable_bit;
1ce4790b 540extern int trust_ctime;
9378c161 541extern int quote_path_fully;
78a8d641 542extern int has_symlinks;
0a9b88b7 543extern int ignore_case;
5f73076c 544extern int assume_unchanged;
9f0bb90d 545extern int prefer_symlink_refs;
6de08ae6 546extern int log_all_ref_updates;
2f8acdb3 547extern int warn_ambiguous_refs;
72a5b561 548extern int unique_abbrev_extra_length;
457f06d6 549extern int shared_repository;
2ae1c53b 550extern const char *apply_default_whitespace;
86c91f91 551extern const char *apply_default_ignorewhitespace;
12f6c308 552extern int zlib_compression_level;
960ccca6
DH
553extern int core_compression_level;
554extern int core_compression_seen;
60bb8b14 555extern size_t packed_git_window_size;
77ccc5bb 556extern size_t packed_git_limit;
18bdec11 557extern size_t delta_base_cache_limit;
dae556bd 558extern int read_replace_refs;
aafe9fba 559extern int fsync_object_files;
671c9b7e 560extern int core_preload_index;
08aefc9e 561extern int core_apply_sparse_checkout;
17712991 562
21e5ad50
SP
563enum safe_crlf {
564 SAFE_CRLF_FALSE = 0,
565 SAFE_CRLF_FAIL = 1,
4b05548f 566 SAFE_CRLF_WARN = 2
21e5ad50
SP
567};
568
569extern enum safe_crlf safe_crlf;
570
fd6cce9e
EB
571enum auto_crlf {
572 AUTO_CRLF_FALSE = 0,
573 AUTO_CRLF_TRUE = 1,
574 AUTO_CRLF_INPUT = -1,
575};
576
577extern enum auto_crlf auto_crlf;
578
942e7747
EB
579enum eol {
580 EOL_UNSET,
581 EOL_CRLF,
582 EOL_LF,
583#ifdef NATIVE_CRLF
584 EOL_NATIVE = EOL_CRLF
585#else
586 EOL_NATIVE = EOL_LF
587#endif
588};
589
590extern enum eol eol;
591
9ed36cfa 592enum branch_track {
9188ed89 593 BRANCH_TRACK_UNSPECIFIED = -1,
9ed36cfa
JS
594 BRANCH_TRACK_NEVER = 0,
595 BRANCH_TRACK_REMOTE,
596 BRANCH_TRACK_ALWAYS,
597 BRANCH_TRACK_EXPLICIT,
4b05548f 598 BRANCH_TRACK_OVERRIDE
9ed36cfa
JS
599};
600
c998ae9b
DS
601enum rebase_setup_type {
602 AUTOREBASE_NEVER = 0,
603 AUTOREBASE_LOCAL,
604 AUTOREBASE_REMOTE,
4b05548f 605 AUTOREBASE_ALWAYS
c998ae9b
DS
606};
607
52153747 608enum push_default_type {
52153747
FAG
609 PUSH_DEFAULT_NOTHING = 0,
610 PUSH_DEFAULT_MATCHING,
611 PUSH_DEFAULT_TRACKING,
4b05548f 612 PUSH_DEFAULT_CURRENT
52153747
FAG
613};
614
9ed36cfa 615extern enum branch_track git_branch_track;
c998ae9b 616extern enum rebase_setup_type autorebase;
52153747 617extern enum push_default_type push_default;
9ed36cfa 618
348df166
JS
619enum object_creation_mode {
620 OBJECT_CREATION_USES_HARDLINKS = 0,
4b05548f 621 OBJECT_CREATION_USES_RENAMES = 1
348df166
JS
622};
623
624extern enum object_creation_mode object_creation_mode;
be66a6c4 625
a97a7468
JS
626extern char *notes_ref_name;
627
7f3140cd
JS
628extern int grafts_replace_parents;
629
ab9cb76f
JH
630#define GIT_REPO_VERSION 0
631extern int repository_format_version;
632extern int check_repository_format(void);
633
734aab75
LT
634#define MTIME_CHANGED 0x0001
635#define CTIME_CHANGED 0x0002
636#define OWNER_CHANGED 0x0004
637#define MODE_CHANGED 0x0008
638#define INODE_CHANGED 0x0010
639#define DATA_CHANGED 0x0020
8ae0a8c5 640#define TYPE_CHANGED 0x0040
e83c5163 641
108bebea
AR
642extern char *mksnpath(char *buf, size_t n, const char *fmt, ...)
643 __attribute__((format (printf, 3, 4)));
fe2d7776
AR
644extern char *git_snpath(char *buf, size_t n, const char *fmt, ...)
645 __attribute__((format (printf, 3, 4)));
aba13e7c
AR
646extern char *git_pathdup(const char *fmt, ...)
647 __attribute__((format (printf, 1, 2)));
108bebea 648
e83c5163 649/* Return a statically allocated filename matching the sha1 signature */
4ec99bf0
TS
650extern char *mkpath(const char *fmt, ...) __attribute__((format (printf, 1, 2)));
651extern char *git_path(const char *fmt, ...) __attribute__((format (printf, 1, 2)));
0bad611b
HV
652extern char *git_path_submodule(const char *path, const char *fmt, ...)
653 __attribute__((format (printf, 2, 3)));
654
73134b6d 655extern char *sha1_file_name(const unsigned char *sha1);
bf592c50
DB
656extern char *sha1_pack_name(const unsigned char *sha1);
657extern char *sha1_pack_index_name(const unsigned char *sha1);
013f276e 658extern const char *find_unique_abbrev(const unsigned char *sha1, int);
88cd621d 659extern const unsigned char null_sha1[20];
0bef57ee
DR
660static inline int is_null_sha1(const unsigned char *sha1)
661{
662 return !memcmp(sha1, null_sha1, 20);
663}
a89fccd2
DR
664static inline int hashcmp(const unsigned char *sha1, const unsigned char *sha2)
665{
666 return memcmp(sha1, sha2, 20);
667}
e702496e
SP
668static inline void hashcpy(unsigned char *sha_dst, const unsigned char *sha_src)
669{
670 memcpy(sha_dst, sha_src, 20);
671}
a8e0d16d
JH
672static inline void hashclr(unsigned char *hash)
673{
674 memset(hash, 0, 20);
675}
e83c5163 676
14d9c578
JK
677#define EMPTY_TREE_SHA1_HEX \
678 "4b825dc642cb6eb9a060e54bf8d69288fbee4904"
679#define EMPTY_TREE_SHA1_BIN \
680 "\x4b\x82\x5d\xc6\x42\xcb\x6e\xb9\xa0\x60" \
681 "\xe5\x4b\xf8\xd6\x92\x88\xfb\xee\x49\x04"
682
f2db68ed
HE
683int git_mkstemp(char *path, size_t n, const char *template);
684
003b33a8
DA
685int git_mkstemps(char *path, size_t n, const char *template, int suffix_len);
686
b862b61c
MM
687/* set default permissions by passing mode arguments to open(2) */
688int git_mkstemps_mode(char *pattern, int suffix_len, int mode);
689int git_mkstemp_mode(char *pattern, int mode);
690
06cbe855
HO
691/*
692 * NOTE NOTE NOTE!!
693 *
694 * PERM_UMASK, OLD_PERM_GROUP and OLD_PERM_EVERYBODY enumerations must
695 * not be changed. Old repositories have core.sharedrepository written in
696 * numeric format, and therefore these values are preserved for compatibility
697 * reasons.
698 */
94df2506 699enum sharedrepo {
06cbe855
HO
700 PERM_UMASK = 0,
701 OLD_PERM_GROUP = 1,
702 OLD_PERM_EVERYBODY = 2,
703 PERM_GROUP = 0660,
4b05548f 704 PERM_EVERYBODY = 0664
94df2506
JH
705};
706int git_config_perm(const char *var, const char *value);
17e61b82
JH
707int set_shared_perm(const char *path, int mode);
708#define adjust_shared_perm(path) set_shared_perm((path), 0)
b2cb9425 709int safe_create_leading_directories(char *path);
8e21d63b 710int safe_create_leading_directories_const(const char *path);
395de250 711extern char *expand_user_path(const char *path);
bd22c904 712char *enter_repo(char *path, int strict);
e5392c51
JS
713static inline int is_absolute_path(const char *path)
714{
25fe217b 715 return path[0] == '/' || has_dos_drive_prefix(path);
e5392c51 716}
90b4a71c 717int is_directory(const char *);
e5392c51 718const char *make_absolute_path(const char *path);
1b9a9467 719const char *make_nonrelative_path(const char *path);
044bbbcb 720const char *make_relative_path(const char *abs, const char *base);
f3cad0ad 721int normalize_path_copy(char *dst, const char *src);
0454dd93 722int longest_ancestor_length(const char *path, const char *prefix_list);
4fcc86b0 723char *strip_path_suffix(const char *path, const char *suffix);
34b6cb8b 724int daemon_avoid_alias(const char *path);
4bb43de2 725int offset_1st_component(const char *path);
b2cb9425 726
e83c5163 727/* Read and unpack a sha1 file into memory, write memory to a sha1 file */
21666f1a 728extern int sha1_object_info(const unsigned char *, unsigned long *);
f5552aee
CC
729extern void *read_sha1_file_repl(const unsigned char *sha1, enum object_type *type, unsigned long *size, const unsigned char **replacement);
730static inline void *read_sha1_file(const unsigned char *sha1, enum object_type *type, unsigned long *size)
731{
732 return read_sha1_file_repl(sha1, type, size, NULL);
733}
ce9fbf16 734extern int hash_sha1_file(const void *buf, unsigned long len, const char *type, unsigned char *sha1);
c00e657d 735extern int write_sha1_file(const void *buf, unsigned long len, const char *type, unsigned char *return_sha1);
21666f1a 736extern int pretend_sha1_file(void *, unsigned long, enum object_type, unsigned char *);
bbac7311 737extern int force_object_loose(const unsigned char *sha1, time_t mtime);
8237b185 738
0e8189e2
NP
739/* global flag to enable extra checks when accessing packed objects */
740extern int do_check_packed_object_crc;
741
5d6ccf5c 742extern int check_sha1_signature(const unsigned char *sha1, void *buf, unsigned long size, const char *type);
e83c5163 743
839837b9 744extern int move_temp_to_file(const char *tmpfile, const char *filename);
8237b185 745
cd673c1f 746extern int has_sha1_pack(const unsigned char *sha1);
8237b185 747extern int has_sha1_file(const unsigned char *sha1);
0f4dc14a 748extern int has_loose_object_nonlocal(const unsigned char *sha1);
8237b185 749
bf592c50
DB
750extern int has_pack_index(const unsigned char *sha1);
751
40d52ff7
JK
752extern void assert_sha1_type(const unsigned char *sha1, enum object_type expect);
753
192a6be2
LT
754extern const signed char hexval_table[256];
755static inline unsigned int hexval(unsigned char c)
e49521b5
JH
756{
757 return hexval_table[c];
758}
759
e83c5163 760/* Convert to/from hex/sha1 representation */
46a6c262
JH
761#define MINIMUM_ABBREV 4
762#define DEFAULT_ABBREV 7
763
573285e5
CP
764struct object_context {
765 unsigned char tree[20];
766 char path[PATH_MAX];
767 unsigned mode;
768};
769
3c249c95 770extern int get_sha1(const char *str, unsigned char *sha1);
009fee47
MM
771extern int get_sha1_with_mode_1(const char *str, unsigned char *sha1, unsigned *mode, int gently, const char *prefix);
772static inline int get_sha1_with_mode(const char *str, unsigned char *sha1, unsigned *mode)
773{
774 return get_sha1_with_mode_1(str, sha1, mode, 1, NULL);
775}
573285e5
CP
776extern int get_sha1_with_context_1(const char *name, unsigned char *sha1, struct object_context *orc, int gently, const char *prefix);
777static inline int get_sha1_with_context(const char *str, unsigned char *sha1, struct object_context *orc)
778{
779 return get_sha1_with_context_1(str, sha1, orc, 1, NULL);
780}
197ee8c9
LT
781extern int get_sha1_hex(const char *hex, unsigned char *sha1);
782extern char *sha1_to_hex(const unsigned char *sha1); /* static buffer result! */
ca8db142 783extern int read_ref(const char *filename, unsigned char *sha1);
8da19775 784extern const char *resolve_ref(const char *path, unsigned char *sha1, int, int *);
e86eb666 785extern int dwim_ref(const char *str, int len, unsigned char *sha1, char **ref);
eb3a4822 786extern int dwim_log(const char *str, int len, unsigned char *sha1, char **ref);
431b1969 787extern int interpret_branch_name(const char *str, struct strbuf *);
619a644d 788extern int get_sha1_mb(const char *str, unsigned char *sha1);
e86eb666 789
79803322
SP
790extern int refname_match(const char *abbrev_name, const char *full_name, const char **rules);
791extern const char *ref_rev_parse_rules[];
605b4978 792extern const char *ref_fetch_rules[];
79803322 793
8b5157e4 794extern int create_symref(const char *ref, const char *refs_heads_master, const char *logmsg);
c847f537 795extern int validate_headref(const char *ref);
e83c5163 796
958ba6c9 797extern int base_name_compare(const char *name1, int len1, int mode1, const char *name2, int len2, int mode2);
0ab9e1e8 798extern int df_name_compare(const char *name1, int len1, int mode1, const char *name2, int len2, int mode2);
79517a06 799extern int cache_name_compare(const char *name1, int len1, const char *name2, int len2);
e83c5163 800
40469ee9 801extern void *read_object_with_reference(const unsigned char *sha1,
bf0f910d 802 const char *required_type,
40469ee9
JH
803 unsigned long *size,
804 unsigned char *sha1_ret);
f4913f91 805
81776315
JH
806extern struct object *peel_to_type(const char *name, int namelen,
807 struct object *o, enum object_type);
808
73013afd
JH
809enum date_mode {
810 DATE_NORMAL = 0,
811 DATE_RELATIVE,
812 DATE_SHORT,
813 DATE_LOCAL,
814 DATE_ISO8601,
7dff9b30
LT
815 DATE_RFC2822,
816 DATE_RAW
73013afd
JH
817};
818
f8493ec0 819const char *show_date(unsigned long time, int timezone, enum date_mode mode);
33012fc4
AR
820const char *show_date_relative(unsigned long time, int tz,
821 const struct timeval *now,
822 char *timebuf,
823 size_t timebuf_size);
2a39064c 824int parse_date(const char *date, char *buf, int bufsize);
9644c061 825int parse_date_basic(const char *date, unsigned long *timestamp, int *offset);
ecee9d9e 826void datestamp(char *buf, int bufsize);
93cfa7c7
JH
827#define approxidate(s) approxidate_careful((s), NULL)
828unsigned long approxidate_careful(const char *, int *);
33012fc4 829unsigned long approxidate_relative(const char *date, const struct timeval *now);
856665f8 830enum date_mode parse_date_format(const char *format);
ecee9d9e 831
774751a8
JH
832#define IDENT_WARN_ON_NO_NAME 1
833#define IDENT_ERROR_ON_NO_NAME 2
834#define IDENT_NO_DATE 4
749be728
JH
835extern const char *git_author_info(int);
836extern const char *git_committer_info(int);
798123af 837extern const char *fmt_ident(const char *name, const char *email, const char *date_str, int);
d9ccfe77 838extern const char *fmt_name(const char *name, const char *email);
44fcb497 839extern const char *git_editor(void);
64778d24 840extern const char *git_pager(int stdout_is_tty);
6aa33f40 841
12dccc16
LT
842struct checkout {
843 const char *base_dir;
844 int base_dir_len;
845 unsigned force:1,
846 quiet:1,
847 not_new:1,
848 refresh_cache:1;
849};
850
efbc5831 851extern int checkout_entry(struct cache_entry *ce, const struct checkout *state, char *topath);
b9fd2846
LT
852
853struct cache_def {
854 char path[PATH_MAX + 1];
855 int len;
856 int flags;
857 int track_flags;
858 int prefix_len_stat_func;
859};
860
57199892 861extern int has_symlink_leading_path(const char *name, int len);
b9fd2846 862extern int threaded_has_symlink_leading_path(struct cache_def *, const char *, int);
f66caaf9 863extern int check_leading_path(const char *name, int len);
57199892 864extern int has_dirs_only_path(const char *name, int len, int prefix_len);
78478927
KB
865extern void schedule_dir_for_removal(const char *name, int len);
866extern void remove_scheduled_dirs(void);
12dccc16 867
9a217f2a 868extern struct alternate_object_database {
d5a63b99 869 struct alternate_object_database *next;
9a217f2a 870 char *name;
8f1d2e6f 871 char base[FLEX_ARRAY]; /* more */
d5a63b99 872} *alt_odb_list;
9a217f2a 873extern void prepare_alt_odb(void);
bef70b22 874extern void add_to_alternates_file(const char *reference);
d79796bc
JH
875typedef int alt_odb_fn(struct alternate_object_database *, void *);
876extern void foreach_alt_odb(alt_odb_fn, void*);
9a217f2a 877
c41ee586
SP
878struct pack_window {
879 struct pack_window *next;
880 unsigned char *base;
881 off_t offset;
882 size_t len;
883 unsigned int last_used;
884 unsigned int inuse_cnt;
885};
886
9a217f2a
JH
887extern struct packed_git {
888 struct packed_git *next;
c41ee586 889 struct pack_window *windows;
2dc3a234 890 off_t pack_size;
57059091
NP
891 const void *index_data;
892 size_t index_size;
893 uint32_t num_objects;
8eca0b47
NP
894 uint32_t num_bad_objects;
895 unsigned char *bad_object_sha1;
42873078 896 int index_version;
57059091 897 time_t mtime;
9bc879c1 898 int pack_fd;
8d25931d
BC
899 unsigned pack_local:1,
900 pack_keep:1;
bf592c50 901 unsigned char sha1[20];
8f1d2e6f
JH
902 /* something like ".git/objects/pack/xxxxx.pack" */
903 char pack_name[FLEX_ARRAY]; /* more */
9a217f2a 904} *packed_git;
f3bf9224
JH
905
906struct pack_entry {
c4001d92 907 off_t offset;
f3bf9224
JH
908 unsigned char sha1[20];
909 struct packed_git *p;
910};
911
d1c133f5
LT
912struct ref {
913 struct ref *next;
914 unsigned char old_sha1[20];
915 unsigned char new_sha1[20];
be885d96 916 char *symref;
9f8a15c7
SP
917 unsigned int force:1,
918 merge:1,
919 nonfastforward:1,
920 deletion:1;
8736a848
JK
921 enum {
922 REF_STATUS_NONE = 0,
923 REF_STATUS_OK,
924 REF_STATUS_REJECT_NONFASTFORWARD,
925 REF_STATUS_REJECT_NODELETE,
926 REF_STATUS_UPTODATE,
ca74c458 927 REF_STATUS_REMOTE_REJECT,
4b05548f 928 REF_STATUS_EXPECTING_REPORT
8736a848 929 } status;
2a0fe89a 930 char *remote_status;
f88395ac 931 struct ref *peer_ref; /* when renaming */
8f1d2e6f 932 char name[FLEX_ARRAY]; /* more */
d1c133f5
LT
933};
934
2718ff09
LT
935#define REF_NORMAL (1u << 0)
936#define REF_HEADS (1u << 1)
937#define REF_TAGS (1u << 2)
938
5483f799 939extern struct ref *find_ref_by_name(const struct ref *list, const char *name);
cda69f48 940
7841ce79 941#define CONNECT_VERBOSE (1u << 0)
f206063b 942extern char *git_getpass(const char *prompt);
4577370e 943extern struct child_process *git_connect(int fd[2], const char *url, const char *prog, int flags);
98158e9c 944extern int finish_connect(struct child_process *conn);
013e7c7f 945extern int path_match(const char *path, int nr, char **match);
40c155ff
JH
946struct extra_have_objects {
947 int nr, alloc;
948 unsigned char (*array)[20];
949};
950extern struct ref **get_remote_heads(int in, struct ref **list, int nr_match, char **match, unsigned int flags, struct extra_have_objects *);
211b5f9e 951extern int server_supports(const char *feature);
f7192598 952
7b64469a 953extern struct packed_git *parse_pack_index(unsigned char *sha1, const char *idx_path);
bf592c50 954
9a217f2a 955extern void prepare_packed_git(void);
fc04c412 956extern void reprepare_packed_git(void);
bf592c50
DB
957extern void install_packed_git(struct packed_git *pack);
958
a6080a0a 959extern struct packed_git *find_sha1_pack(const unsigned char *sha1,
bf592c50
DB
960 struct packed_git *packs);
961
276bc2ca 962extern void pack_report(void);
d079837e 963extern int open_pack_index(struct packed_git *);
fa5fc15d 964extern void close_pack_index(struct packed_git *);
4b25d091 965extern unsigned char *use_pack(struct packed_git *, struct pack_window **, off_t, unsigned int *);
c9ced051 966extern void close_pack_windows(struct packed_git *);
03e79c88 967extern void unuse_pack(struct pack_window **);
c74faea1 968extern void free_pack_by_name(const char *);
3d20c636 969extern void clear_delta_base_cache(void);
42873078 970extern struct packed_git *add_packed_git(const char *, int, int);
d079837e 971extern const unsigned char *nth_packed_object_sha1(struct packed_git *, uint32_t);
99093238 972extern off_t nth_packed_object_offset(const struct packed_git *, uint32_t);
c4001d92
SP
973extern off_t find_pack_entry_one(const unsigned char *, struct packed_git *);
974extern void *unpack_entry(struct packed_git *, off_t, enum object_type *, unsigned long *);
09ded04b 975extern unsigned long unpack_object_header_buffer(const unsigned char *buf, unsigned long len, enum object_type *type, unsigned long *sizep);
54dab52a 976extern unsigned long get_size_from_delta(struct packed_git *, struct pack_window **, off_t);
c4001d92 977extern const char *packed_object_info_detail(struct packed_git *, off_t, unsigned long *, unsigned long *, unsigned int *, unsigned char *);
9a217f2a 978
8f3f9b09
JH
979/* Dumb servers support */
980extern int update_server_info(int);
981
ef90d6d4
JS
982typedef int (*config_fn_t)(const char *, const char *, void *);
983extern int git_default_config(const char *, const char *, void *);
984extern int git_config_from_file(config_fn_t fn, const char *, void *);
2b64fc89 985extern void git_config_push_parameter(const char *text);
8b1fa778 986extern int git_config_parse_parameter(const char *text);
2b64fc89 987extern int git_config_parse_environment(void);
b3d83d9f 988extern int git_config_from_parameters(config_fn_t fn, void *data);
ef90d6d4 989extern int git_config(config_fn_t fn, void *);
dbdf5854 990extern int git_config_early(config_fn_t fn, void *, const char *repo_config);
0b87b6e0 991extern int git_parse_ulong(const char *, unsigned long *);
17712991 992extern int git_config_int(const char *, const char *);
0b87b6e0 993extern unsigned long git_config_ulong(const char *, const char *);
a53f2ec6 994extern int git_config_bool_or_int(const char *, const char *, int *);
17712991 995extern int git_config_bool(const char *, const char *);
8420ccd8 996extern int git_config_maybe_bool(const char *, const char *);
ea5105a5 997extern int git_config_string(const char **, const char *, const char *);
395de250 998extern int git_config_pathname(const char **, const char *, const char *);
10bea152 999extern int git_config_set(const char *, const char *);
4ddba79d 1000extern int git_config_set_multivar(const char *, const char *, const char *, int);
0667fcfb 1001extern int git_config_rename_section(const char *, const char *);
506b17b1 1002extern const char *git_etc_gitconfig(void);
ef90d6d4 1003extern int check_repository_format_version(const char *var, const char *value, void *cb);
0ef37164 1004extern int git_env_bool(const char *, int);
ab88c363
JK
1005extern int git_config_system(void);
1006extern int git_config_global(void);
40ea4ed9 1007extern int config_error_nonbool(const char *);
a6fa5992
PN
1008extern const char *get_log_output_encoding(void);
1009extern const char *get_commit_output_encoding(void);
1010
dc871831 1011extern const char *config_exclusive_filename;
17712991 1012
e1b10391
LT
1013#define MAX_GITNAME (1000)
1014extern char git_default_email[MAX_GITNAME];
1015extern char git_default_name[MAX_GITNAME];
91c38a21
JH
1016#define IDENT_NAME_GIVEN 01
1017#define IDENT_MAIL_GIVEN 02
1018#define IDENT_ALL_GIVEN (IDENT_NAME_GIVEN|IDENT_MAIL_GIVEN)
bb1ae3f6 1019extern int user_ident_explicitly_given;
5aeb3a3a 1020extern int user_ident_sufficiently_given(void);
e1b10391 1021
1a8f2741 1022extern const char *git_commit_encoding;
3a55602e 1023extern const char *git_log_output_encoding;
d551a488 1024extern const char *git_mailmap_file;
4e72dcec 1025
06f59e9f
TT
1026/* IO helper functions */
1027extern void maybe_flush_or_die(FILE *, const char *);
f3123c4a 1028extern int copy_fd(int ifd, int ofd);
1468bd47 1029extern int copy_file(const char *dst, const char *src, int mode);
f7835a25 1030extern int copy_file_with_time(const char *dst, const char *src, int mode);
7230e6d0 1031extern void write_or_die(int fd, const void *buf, size_t count);
6ce4e61f 1032extern int write_or_whine(int fd, const void *buf, size_t count, const char *msg);
e0814056 1033extern int write_or_whine_pipe(int fd, const void *buf, size_t count, const char *msg);
4c81b03e 1034extern void fsync_or_die(int fd, const char *);
ad897215 1035
2b7ca830
JM
1036extern ssize_t read_in_full(int fd, void *buf, size_t count);
1037extern ssize_t write_in_full(int fd, const void *buf, size_t count);
1038static inline ssize_t write_str_in_full(int fd, const char *str)
1039{
1040 return write_in_full(fd, str, strlen(str));
1041}
1042
f67b45f8
LT
1043/* pager.c */
1044extern void setup_pager(void);
872da32d 1045extern const char *pager_program;
6e9af863 1046extern int pager_in_use(void);
aa086eb8 1047extern int pager_use_color;
f67b45f8 1048
ee9601e6 1049extern const char *editor_program;
d3e7da89 1050extern const char *askpass_program;
dfb068be 1051extern const char *excludes_file;
4d87b9c5 1052
051308f6 1053/* base85 */
f9815772
JM
1054int decode_85(char *dst, const char *line, int linelen);
1055void encode_85(char *buf, const unsigned char *data, int bytes);
051308f6 1056
855419f7 1057/* alloc.c */
100c5f3b
LT
1058extern void *alloc_blob_node(void);
1059extern void *alloc_tree_node(void);
1060extern void *alloc_commit_node(void);
1061extern void *alloc_tag_node(void);
1062extern void *alloc_object_node(void);
855419f7
LT
1063extern void alloc_report(void);
1064
6ce4e61f 1065/* trace.c */
28bea9e5 1066__attribute__((format (printf, 1, 2)))
6ce4e61f 1067extern void trace_printf(const char *format, ...);
28bea9e5 1068__attribute__((format (printf, 2, 3)))
b319ce4c 1069extern void trace_argv_printf(const char **argv, const char *format, ...);
a9ca8a85 1070extern void trace_repo_setup(const char *prefix);
6ce4e61f 1071
6c510bee 1072/* convert.c */
5ecd293d 1073/* returns 1 if *dst was used */
21e5ad50
SP
1074extern int convert_to_git(const char *path, const char *src, size_t len,
1075 struct strbuf *dst, enum safe_crlf checksafe);
5ecd293d 1076extern int convert_to_working_tree(const char *path, const char *src, size_t len, struct strbuf *dst);
f217f0e8 1077extern int renormalize_buffer(const char *path, const char *src, size_t len, struct strbuf *dst);
6c510bee 1078
b6ec1d61 1079/* add */
7ae02a30
AR
1080/*
1081 * return 0 if success, 1 - if addition of a file failed and
1082 * ADD_FILES_IGNORE_ERRORS was specified in flags
1083 */
1084int add_files_to_cache(const char *prefix, const char **pathspec, int flags);
b6ec1d61 1085
aecbf914
JH
1086/* diff.c */
1087extern int diff_auto_refresh_index;
1088
68faf689
JH
1089/* match-trees.c */
1090void shift_tree(const unsigned char *, const unsigned char *, unsigned char *, int);
85e51b78 1091void shift_tree_by(const unsigned char *, const unsigned char *, unsigned char *, const char *);
68faf689 1092
a9cc857a
JH
1093/*
1094 * whitespace rules.
1095 * used by both diff and apply
f4b05a49 1096 * last two digits are tab width
a9cc857a 1097 */
f4b05a49
JS
1098#define WS_BLANK_AT_EOL 0100
1099#define WS_SPACE_BEFORE_TAB 0200
1100#define WS_INDENT_WITH_NON_TAB 0400
1101#define WS_CR_AT_EOL 01000
1102#define WS_BLANK_AT_EOF 02000
1103#define WS_TAB_IN_INDENT 04000
aeb84b05 1104#define WS_TRAILING_SPACE (WS_BLANK_AT_EOL|WS_BLANK_AT_EOF)
f4b05a49
JS
1105#define WS_DEFAULT_RULE (WS_TRAILING_SPACE|WS_SPACE_BEFORE_TAB|8)
1106#define WS_TAB_WIDTH_MASK 077
cf1b7869
JH
1107extern unsigned whitespace_rule_cfg;
1108extern unsigned whitespace_rule(const char *);
1109extern unsigned parse_whitespace_rule(const char *);
8f8841e9
JH
1110extern unsigned ws_check(const char *line, int len, unsigned ws_rule);
1111extern void ws_check_emit(const char *line, int len, unsigned ws_rule, FILE *stream, const char *set, const char *reset, const char *ws);
c1795bb0 1112extern char *whitespace_error_string(unsigned ws);
d511bd33 1113extern void ws_fix_copy(struct strbuf *, const char *, int, unsigned, int *);
877f23cc 1114extern int ws_blank_line(const char *line, int len, unsigned ws_rule);
f4b05a49 1115#define ws_tab_width(rule) ((rule) & WS_TAB_WIDTH_MASK)
a9cc857a 1116
ee425e46 1117/* ls-files */
ee425e46
JH
1118int report_path_error(const char *ps_matched, const char **pathspec, int prefix_offset);
1119void overlay_tree_on_cache(const char *tree_name, const char *prefix);
1120
94351118 1121char *alias_lookup(const char *alias);
0989fe96 1122int split_cmdline(char *cmdline, const char ***argv);
ad9ac6db
GB
1123/* Takes a negative value returned by split_cmdline */
1124const char *split_cmdline_strerror(int cmdline_errno);
94351118 1125
e37c1329
NTND
1126/* git.c */
1127struct startup_info {
a60645f9 1128 int have_repository;
f07d6a1a 1129 const char *prefix;
e37c1329
NTND
1130};
1131extern struct startup_info *startup_info;
1132
cac42b26
JH
1133/* builtin/merge.c */
1134int checkout_fast_forward(const unsigned char *from, const unsigned char *to);
1135
e83c5163 1136#endif /* CACHE_H */