Merge branch 'cr/tag'
[git/git.git] / cache.h
CommitLineData
e83c5163
LT
1#ifndef CACHE_H
2#define CACHE_H
3
4050c0df 4#include "git-compat-util.h"
e83c5163 5
cef661fc 6#include SHA1_HEADER
e83c5163
LT
7#include <zlib.h>
8
9da3acfb
ET
9#if ZLIB_VERNUM < 0x1200
10#define deflateBound(c,s) ((s) + (((s) + 7) >> 3) + (((s) + 63) >> 6) + 11)
11#endif
12
962554c6 13#if defined(DT_UNKNOWN) && !defined(NO_D_TYPE_IN_DIRENT)
b6829693
ET
14#define DTYPE(de) ((de)->d_type)
15#else
0bdd79af
JH
16#undef DT_UNKNOWN
17#undef DT_DIR
18#undef DT_REG
19#undef DT_LNK
b6829693
ET
20#define DT_UNKNOWN 0
21#define DT_DIR 1
22#define DT_REG 2
a15c1c60 23#define DT_LNK 3
b6829693
ET
24#define DTYPE(de) DT_UNKNOWN
25#endif
26
40689ae1
MK
27/* unknown mode (impossible combination S_IFIFO|S_IFCHR) */
28#define S_IFINVALID 0030000
29
9eec4795
LT
30/*
31 * A "directory link" is a link to another git directory.
32 *
33 * The value 0160000 is not normally a valid mode, and
34 * also just happens to be S_IFDIR + S_IFLNK
35 *
36 * NOTE! We *really* shouldn't depend on the S_IFxxx macros
37 * always having the same values everywhere. We should use
38 * our internal git values for these things, and then we can
39 * translate that to the OS-specific value. It just so
40 * happens that everybody shares the same bit representation
41 * in the UNIX world (and apparently wider too..)
42 */
302b9282
MW
43#define S_IFGITLINK 0160000
44#define S_ISGITLINK(m) (((m) & S_IFMT) == S_IFGITLINK)
9eec4795 45
2386d658
LT
46/*
47 * Intensive research over the course of many years has shown that
48 * port 9418 is totally unused by anything else. Or
49 *
50 * Your search - "port 9418" - did not match any documents.
51 *
52 * as www.google.com puts it.
ba8a4970
LT
53 *
54 * This port has been properly assigned for git use by IANA:
55 * git (Assigned-9418) [I06-050728-0001].
56 *
57 * git 9418/tcp git pack transfer service
58 * git 9418/udp git pack transfer service
59 *
60 * with Linus Torvalds <torvalds@osdl.org> as the point of
61 * contact. September 2005.
62 *
63 * See http://www.iana.org/assignments/port-numbers
2386d658
LT
64 */
65#define DEFAULT_GIT_PORT 9418
66
e83c5163
LT
67/*
68 * Basic data structures for the directory cache
e83c5163
LT
69 */
70
71#define CACHE_SIGNATURE 0x44495243 /* "DIRC" */
72struct cache_header {
ccc4feb5
LT
73 unsigned int hdr_signature;
74 unsigned int hdr_version;
75 unsigned int hdr_entries;
e83c5163
LT
76};
77
78/*
79 * The "cache_time" is just the low 32 bits of the
80 * time. It doesn't matter if it overflows - we only
81 * check it for equality in the 32 bits we save.
82 */
83struct cache_time {
84 unsigned int sec;
85 unsigned int nsec;
86};
87
88/*
89 * dev/ino/uid/gid/size are also just tracked to the low 32 bits
90 * Again - this is just a (very strong in practice) heuristic that
91 * the inode hasn't changed.
ccc4feb5
LT
92 *
93 * We save the fields in big-endian order to allow using the
94 * index file over NFS transparently.
e83c5163
LT
95 */
96struct cache_entry {
ccc4feb5
LT
97 struct cache_time ce_ctime;
98 struct cache_time ce_mtime;
99 unsigned int ce_dev;
100 unsigned int ce_ino;
101 unsigned int ce_mode;
102 unsigned int ce_uid;
103 unsigned int ce_gid;
104 unsigned int ce_size;
e83c5163 105 unsigned char sha1[20];
f5cabd13 106 unsigned short ce_flags;
8f1d2e6f 107 char name[FLEX_ARRAY]; /* more */
e83c5163
LT
108};
109
95fd5bf8
LT
110#define CE_NAMEMASK (0x0fff)
111#define CE_STAGEMASK (0x3000)
220a0b52 112#define CE_UPDATE (0x4000)
5f73076c 113#define CE_VALID (0x8000)
aee46198 114#define CE_STAGESHIFT 12
95fd5bf8 115
aee46198
JH
116#define create_ce_flags(len, stage) htons((len) | ((stage) << CE_STAGESHIFT))
117#define ce_namelen(ce) (CE_NAMEMASK & ntohs((ce)->ce_flags))
118#define ce_size(ce) cache_entry_size(ce_namelen(ce))
119#define ce_stage(ce) ((CE_STAGEMASK & ntohs((ce)->ce_flags)) >> CE_STAGESHIFT)
120
e4479470 121#define ce_permissions(mode) (((mode) & 0100) ? 0755 : 0644)
8ae0a8c5
KS
122static inline unsigned int create_ce_mode(unsigned int mode)
123{
8ae0a8c5
KS
124 if (S_ISLNK(mode))
125 return htonl(S_IFLNK);
302b9282
MW
126 if (S_ISDIR(mode) || S_ISGITLINK(mode))
127 return htonl(S_IFGITLINK);
db823d4a 128 return htonl(S_IFREG | ce_permissions(mode));
8ae0a8c5 129}
185c975f
JH
130static inline unsigned int ce_mode_from_stat(struct cache_entry *ce, unsigned int mode)
131{
78a8d641
JS
132 extern int trust_executable_bit, has_symlinks;
133 if (!has_symlinks && S_ISREG(mode) &&
134 ce && S_ISLNK(ntohl(ce->ce_mode)))
135 return ce->ce_mode;
185c975f
JH
136 if (!trust_executable_bit && S_ISREG(mode)) {
137 if (ce && S_ISREG(ntohl(ce->ce_mode)))
138 return ce->ce_mode;
139 return create_ce_mode(0666);
140 }
141 return create_ce_mode(mode);
142}
1b0c7174
JH
143#define canon_mode(mode) \
144 (S_ISREG(mode) ? (S_IFREG | ce_permissions(mode)) : \
302b9282 145 S_ISLNK(mode) ? S_IFLNK : S_ISDIR(mode) ? S_IFDIR : S_IFGITLINK)
e4479470 146
aee46198 147#define cache_entry_size(len) ((offsetof(struct cache_entry,name) + (len) + 8) & ~7)
f5cabd13 148
228e94f9
JH
149struct index_state {
150 struct cache_entry **cache;
151 unsigned int cache_nr, cache_alloc, cache_changed;
152 struct cache_tree *cache_tree;
153 time_t timestamp;
154 void *mmap;
155 size_t mmap_size;
156};
157
158extern struct index_state the_index;
159
4aab5b46 160#ifndef NO_THE_INDEX_COMPATIBILITY_MACROS
228e94f9
JH
161#define active_cache (the_index.cache)
162#define active_nr (the_index.cache_nr)
163#define active_alloc (the_index.cache_alloc)
164#define active_cache_changed (the_index.cache_changed)
165#define active_cache_tree (the_index.cache_tree)
e83c5163 166
4aab5b46
JH
167#define read_cache() read_index(&the_index)
168#define read_cache_from(path) read_index_from(&the_index, (path))
169#define write_cache(newfd, cache, entries) write_index(&the_index, (newfd))
170#define discard_cache() discard_index(&the_index)
171#define cache_name_pos(name, namelen) index_name_pos(&the_index,(name),(namelen))
172#define add_cache_entry(ce, option) add_index_entry(&the_index, (ce), (option))
173#define remove_cache_entry_at(pos) remove_index_entry_at(&the_index, (pos))
174#define remove_file_from_cache(path) remove_file_from_index(&the_index, (path))
175#define add_file_to_cache(path, verbose) add_file_to_index(&the_index, (path), (verbose))
176#define refresh_cache(flags) refresh_index(&the_index, flags)
177#define ce_match_stat(ce, st, really) ie_match_stat(&the_index, (ce), (st), (really))
178#define ce_modified(ce, st, really) ie_modified(&the_index, (ce), (st), (really))
179#endif
e83c5163 180
edaec3fb
JH
181enum object_type {
182 OBJ_BAD = -1,
183 OBJ_NONE = 0,
184 OBJ_COMMIT = 1,
185 OBJ_TREE = 2,
186 OBJ_BLOB = 3,
187 OBJ_TAG = 4,
188 /* 5 for future expansion */
189 OBJ_OFS_DELTA = 6,
190 OBJ_REF_DELTA = 7,
191 OBJ_MAX,
192};
193
8ac069ac
JH
194#define GIT_DIR_ENVIRONMENT "GIT_DIR"
195#define DEFAULT_GIT_DIR_ENVIRONMENT ".git"
d19938ab 196#define DB_ENVIRONMENT "GIT_OBJECT_DIRECTORY"
bb233d69 197#define INDEX_ENVIRONMENT "GIT_INDEX_FILE"
5da5c8f4 198#define GRAFT_ENVIRONMENT "GIT_GRAFT_FILE"
d4ebc36c
JH
199#define TEMPLATE_DIR_ENVIRONMENT "GIT_TEMPLATE_DIR"
200#define CONFIG_ENVIRONMENT "GIT_CONFIG"
201#define CONFIG_LOCAL_ENVIRONMENT "GIT_CONFIG_LOCAL"
202#define EXEC_PATH_ENVIRONMENT "GIT_EXEC_PATH"
d0bfd026
JH
203#define GITATTRIBUTES_FILE ".gitattributes"
204#define INFOATTRIBUTES_FILE "info/attributes"
f48fd688 205#define ATTRIBUTE_MACRO_PREFIX "[attr]"
bb233d69 206
7d1864ce
JH
207extern int is_bare_repository_cfg;
208extern int is_bare_repository(void);
68025633 209extern int is_inside_git_dir(void);
c5fba16c 210extern const char *get_git_dir(void);
8ac069ac 211extern char *get_object_directory(void);
95fc7512 212extern char *get_refs_directory(void);
8ac069ac 213extern char *get_index_file(void);
5da5c8f4 214extern char *get_graft_file(void);
8ac069ac
JH
215
216#define ALTERNATE_DB_ENVIRONMENT "GIT_ALTERNATE_OBJECT_DIRECTORIES"
bb233d69 217
6b5ee137 218extern const char **get_pathspec(const char *prefix, const char **pathspec);
4ca06608 219extern const char *setup_git_directory_gently(int *);
d288a700 220extern const char *setup_git_directory(void);
6b5ee137 221extern const char *prefix_path(const char *prefix, int len, const char *path);
4ca06608 222extern const char *prefix_filename(const char *prefix, int len, const char *path);
e23d0b4a 223extern void verify_filename(const char *prefix, const char *name);
ea92f41f 224extern void verify_non_filename(const char *prefix, const char *name);
d288a700 225
e83c5163
LT
226#define alloc_nr(x) (((x)+16)*3/2)
227
6815e569
JK
228/*
229 * Realloc the buffer pointed at by variable 'x' so that it can hold
230 * at least 'nr' entries; the number of entries currently allocated
231 * is 'alloc', using the standard growing factor alloc_nr() macro.
232 *
233 * DO NOT USE any expression with side-effect for 'x' or 'alloc'.
234 */
235#define ALLOC_GROW(x, nr, alloc) \
236 do { \
c927e6c6 237 if ((nr) > alloc) { \
4234a761
JH
238 if (alloc_nr(alloc) < (nr)) \
239 alloc = (nr); \
240 else \
241 alloc = alloc_nr(alloc); \
6815e569
JK
242 x = xrealloc((x), alloc * sizeof(*(x))); \
243 } \
244 } while(0)
245
734aab75 246/* Initialize and use the cache information */
4aab5b46
JH
247extern int read_index(struct index_state *);
248extern int read_index_from(struct index_state *, const char *path);
249extern int write_index(struct index_state *, int newfd);
250extern int discard_index(struct index_state *);
8dcf39c4 251extern int verify_path(const char *path);
4aab5b46 252extern int index_name_pos(struct index_state *, const char *name, int namelen);
192268c1
JH
253#define ADD_CACHE_OK_TO_ADD 1 /* Ok to add */
254#define ADD_CACHE_OK_TO_REPLACE 2 /* Ok to replace file/directory */
b155725d 255#define ADD_CACHE_SKIP_DFCHECK 4 /* Ok to skip DF conflict checks */
4aab5b46 256extern int add_index_entry(struct index_state *, struct cache_entry *ce, int option);
8fd2cb40 257extern struct cache_entry *refresh_cache_entry(struct cache_entry *ce, int really);
4aab5b46
JH
258extern int remove_index_entry_at(struct index_state *, int pos);
259extern int remove_file_from_index(struct index_state *, const char *path);
260extern int add_file_to_index(struct index_state *, const char *path, int verbose);
dbbce55b 261extern int ce_same_name(struct cache_entry *a, struct cache_entry *b);
4aab5b46
JH
262extern int ie_match_stat(struct index_state *, struct cache_entry *, struct stat *, int);
263extern int ie_modified(struct index_state *, struct cache_entry *, struct stat *, int);
c0fd1f51 264extern int ce_path_match(const struct cache_entry *ce, const char **pathspec);
53bca91a 265extern int index_fd(unsigned char *sha1, int fd, struct stat *st, int write_object, enum object_type type, const char *path);
e7332f96 266extern int read_pipe(int fd, char** return_buf, unsigned long* return_size);
024510c8 267extern int index_pipe(unsigned char *sha1, int fd, const char *type, int write_object);
ec1fcc16 268extern int index_path(unsigned char *sha1, const char *path, struct stat *st, int write_object);
415e96c8
JH
269extern void fill_stat_cache_info(struct cache_entry *ce, struct stat *st);
270
405e5b2f
LT
271#define REFRESH_REALLY 0x0001 /* ignore_valid */
272#define REFRESH_UNMERGED 0x0002 /* allow unmerged */
273#define REFRESH_QUIET 0x0004 /* be quiet about it */
274#define REFRESH_IGNORE_MISSING 0x0008 /* ignore non-existent */
4aab5b46 275extern int refresh_index(struct index_state *, unsigned int flags);
405e5b2f 276
021b6e45
JH
277struct lock_file {
278 struct lock_file *next;
5e635e39 279 pid_t owner;
1084b845 280 char on_list;
021b6e45 281 char filename[PATH_MAX];
415e96c8 282};
40aaae88 283extern int hold_lock_file_for_update(struct lock_file *, const char *path, int);
021b6e45 284extern int commit_lock_file(struct lock_file *);
30ca07a2
JH
285
286extern int hold_locked_index(struct lock_file *, int);
287extern int commit_locked_index(struct lock_file *);
5e7f56ac 288extern void set_alternate_index_output(const char *);
30ca07a2 289
021b6e45 290extern void rollback_lock_file(struct lock_file *);
1401f46b 291extern int delete_ref(const char *, const unsigned char *sha1);
734aab75 292
2ae1c53b 293/* Environment bits from configuration mechanism */
17712991 294extern int trust_executable_bit;
78a8d641 295extern int has_symlinks;
5f73076c 296extern int assume_unchanged;
9f0bb90d 297extern int prefer_symlink_refs;
6de08ae6 298extern int log_all_ref_updates;
2f8acdb3 299extern int warn_ambiguous_refs;
457f06d6 300extern int shared_repository;
2ae1c53b 301extern const char *apply_default_whitespace;
12f6c308 302extern int zlib_compression_level;
960ccca6
DH
303extern int core_compression_level;
304extern int core_compression_seen;
60bb8b14 305extern size_t packed_git_window_size;
77ccc5bb 306extern size_t packed_git_limit;
18bdec11 307extern size_t delta_base_cache_limit;
6c510bee 308extern int auto_crlf;
17712991 309
ab9cb76f
JH
310#define GIT_REPO_VERSION 0
311extern int repository_format_version;
312extern int check_repository_format(void);
313
734aab75
LT
314#define MTIME_CHANGED 0x0001
315#define CTIME_CHANGED 0x0002
316#define OWNER_CHANGED 0x0004
317#define MODE_CHANGED 0x0008
318#define INODE_CHANGED 0x0010
319#define DATA_CHANGED 0x0020
8ae0a8c5 320#define TYPE_CHANGED 0x0040
e83c5163
LT
321
322/* Return a statically allocated filename matching the sha1 signature */
4ec99bf0
TS
323extern char *mkpath(const char *fmt, ...) __attribute__((format (printf, 1, 2)));
324extern char *git_path(const char *fmt, ...) __attribute__((format (printf, 1, 2)));
73134b6d 325extern char *sha1_file_name(const unsigned char *sha1);
bf592c50
DB
326extern char *sha1_pack_name(const unsigned char *sha1);
327extern char *sha1_pack_index_name(const unsigned char *sha1);
013f276e 328extern const char *find_unique_abbrev(const unsigned char *sha1, int);
88cd621d 329extern const unsigned char null_sha1[20];
0bef57ee
DR
330static inline int is_null_sha1(const unsigned char *sha1)
331{
332 return !memcmp(sha1, null_sha1, 20);
333}
a89fccd2
DR
334static inline int hashcmp(const unsigned char *sha1, const unsigned char *sha2)
335{
336 return memcmp(sha1, sha2, 20);
337}
e702496e
SP
338static inline void hashcpy(unsigned char *sha_dst, const unsigned char *sha_src)
339{
340 memcpy(sha_dst, sha_src, 20);
341}
a8e0d16d
JH
342static inline void hashclr(unsigned char *hash)
343{
344 memset(hash, 0, 20);
345}
e83c5163 346
f2db68ed
HE
347int git_mkstemp(char *path, size_t n, const char *template);
348
94df2506
JH
349enum sharedrepo {
350 PERM_UMASK = 0,
351 PERM_GROUP,
352 PERM_EVERYBODY
353};
354int git_config_perm(const char *var, const char *value);
457f06d6 355int adjust_shared_perm(const char *path);
b2cb9425 356int safe_create_leading_directories(char *path);
bd22c904 357char *enter_repo(char *path, int strict);
b2cb9425 358
e83c5163 359/* Read and unpack a sha1 file into memory, write memory to a sha1 file */
21666f1a 360extern int sha1_object_info(const unsigned char *, unsigned long *);
21666f1a 361extern void * read_sha1_file(const unsigned char *sha1, enum object_type *type, unsigned long *size);
ce9fbf16 362extern int hash_sha1_file(const void *buf, unsigned long len, const char *type, unsigned char *sha1);
bf0f910d 363extern int write_sha1_file(void *buf, unsigned long len, const char *type, unsigned char *return_sha1);
21666f1a 364extern int pretend_sha1_file(void *, unsigned long, enum object_type, unsigned char *);
8237b185 365
5d6ccf5c 366extern int check_sha1_signature(const unsigned char *sha1, void *buf, unsigned long size, const char *type);
e83c5163 367
70b9829e
DB
368extern int write_sha1_from_fd(const unsigned char *sha1, int fd, char *buffer,
369 size_t bufsize, size_t *bufposn);
a5eda52b 370extern int write_sha1_to_fd(int fd, const unsigned char *sha1);
839837b9 371extern int move_temp_to_file(const char *tmpfile, const char *filename);
8237b185 372
106d710b 373extern int has_sha1_pack(const unsigned char *sha1, const char **ignore);
8237b185
DB
374extern int has_sha1_file(const unsigned char *sha1);
375
bf592c50
DB
376extern int has_pack_file(const unsigned char *sha1);
377extern int has_pack_index(const unsigned char *sha1);
378
192a6be2
LT
379extern const signed char hexval_table[256];
380static inline unsigned int hexval(unsigned char c)
e49521b5
JH
381{
382 return hexval_table[c];
383}
384
e83c5163 385/* Convert to/from hex/sha1 representation */
46a6c262
JH
386#define MINIMUM_ABBREV 4
387#define DEFAULT_ABBREV 7
388
3c249c95 389extern int get_sha1(const char *str, unsigned char *sha1);
a0cd87a5 390extern int get_sha1_with_mode(const char *str, unsigned char *sha1, unsigned *mode);
197ee8c9
LT
391extern int get_sha1_hex(const char *hex, unsigned char *sha1);
392extern char *sha1_to_hex(const unsigned char *sha1); /* static buffer result! */
ca8db142 393extern int read_ref(const char *filename, unsigned char *sha1);
8da19775 394extern const char *resolve_ref(const char *path, unsigned char *sha1, int, int *);
e86eb666 395extern int dwim_ref(const char *str, int len, unsigned char *sha1, char **ref);
eb3a4822 396extern int dwim_log(const char *str, int len, unsigned char *sha1, char **ref);
e86eb666 397
8b5157e4 398extern int create_symref(const char *ref, const char *refs_heads_master, const char *logmsg);
c847f537 399extern int validate_headref(const char *ref);
e83c5163 400
958ba6c9 401extern int base_name_compare(const char *name1, int len1, int mode1, const char *name2, int len2, int mode2);
79517a06 402extern int cache_name_compare(const char *name1, int len1, const char *name2, int len2);
e83c5163 403
40469ee9 404extern void *read_object_with_reference(const unsigned char *sha1,
bf0f910d 405 const char *required_type,
40469ee9
JH
406 unsigned long *size,
407 unsigned char *sha1_ret);
f4913f91 408
a7b02ccf 409enum date_mode { DATE_NORMAL = 0, DATE_RELATIVE, DATE_SHORT, DATE_LOCAL };
f8493ec0 410const char *show_date(unsigned long time, int timezone, enum date_mode mode);
2a387043 411const char *show_rfc2822_date(unsigned long time, int timezone);
2a39064c 412int parse_date(const char *date, char *buf, int bufsize);
ecee9d9e 413void datestamp(char *buf, int bufsize);
3c07b1d1 414unsigned long approxidate(const char *);
ecee9d9e 415
749be728
JH
416extern const char *git_author_info(int);
417extern const char *git_committer_info(int);
798123af 418extern const char *fmt_ident(const char *name, const char *email, const char *date_str, int);
6aa33f40 419
12dccc16
LT
420struct checkout {
421 const char *base_dir;
422 int base_dir_len;
423 unsigned force:1,
424 quiet:1,
425 not_new:1,
426 refresh_cache:1;
427};
428
efbc5831 429extern int checkout_entry(struct cache_entry *ce, const struct checkout *state, char *topath);
f859c846 430extern int has_symlink_leading_path(const char *name, char *last_symlink);
12dccc16 431
9a217f2a 432extern struct alternate_object_database {
d5a63b99 433 struct alternate_object_database *next;
9a217f2a 434 char *name;
8f1d2e6f 435 char base[FLEX_ARRAY]; /* more */
d5a63b99 436} *alt_odb_list;
9a217f2a
JH
437extern void prepare_alt_odb(void);
438
c41ee586
SP
439struct pack_window {
440 struct pack_window *next;
441 unsigned char *base;
442 off_t offset;
443 size_t len;
444 unsigned int last_used;
445 unsigned int inuse_cnt;
446};
447
9a217f2a
JH
448extern struct packed_git {
449 struct packed_git *next;
c41ee586 450 struct pack_window *windows;
2dc3a234 451 off_t pack_size;
57059091
NP
452 const void *index_data;
453 size_t index_size;
454 uint32_t num_objects;
42873078 455 int index_version;
57059091 456 time_t mtime;
9bc879c1 457 int pack_fd;
9d835df2 458 int pack_local;
bf592c50 459 unsigned char sha1[20];
8f1d2e6f
JH
460 /* something like ".git/objects/pack/xxxxx.pack" */
461 char pack_name[FLEX_ARRAY]; /* more */
9a217f2a 462} *packed_git;
f3bf9224
JH
463
464struct pack_entry {
c4001d92 465 off_t offset;
f3bf9224
JH
466 unsigned char sha1[20];
467 struct packed_git *p;
468};
469
d1c133f5
LT
470struct ref {
471 struct ref *next;
472 unsigned char old_sha1[20];
473 unsigned char new_sha1[20];
ff27adf3 474 unsigned char force;
f88395ac 475 struct ref *peer_ref; /* when renaming */
8f1d2e6f 476 char name[FLEX_ARRAY]; /* more */
d1c133f5
LT
477};
478
2718ff09
LT
479#define REF_NORMAL (1u << 0)
480#define REF_HEADS (1u << 1)
481#define REF_TAGS (1u << 2)
482
7841ce79
MT
483#define CONNECT_VERBOSE (1u << 0)
484extern pid_t git_connect(int fd[2], char *url, const char *prog, int flags);
f7192598 485extern int finish_connect(pid_t pid);
013e7c7f 486extern int path_match(const char *path, int nr, char **match);
41cb7488 487extern int get_ack(int fd, unsigned char *result_sha1);
2718ff09 488extern struct ref **get_remote_heads(int in, struct ref **list, int nr_match, char **match, unsigned int flags);
211b5f9e 489extern int server_supports(const char *feature);
f7192598 490
bf592c50 491extern struct packed_git *parse_pack_index(unsigned char *sha1);
2ab141a2 492extern struct packed_git *parse_pack_index_file(const unsigned char *sha1,
42873078 493 const char *idx_path);
bf592c50 494
9a217f2a 495extern void prepare_packed_git(void);
fc04c412 496extern void reprepare_packed_git(void);
bf592c50
DB
497extern void install_packed_git(struct packed_git *pack);
498
a6080a0a 499extern struct packed_git *find_sha1_pack(const unsigned char *sha1,
bf592c50
DB
500 struct packed_git *packs);
501
276bc2ca 502extern void pack_report(void);
d079837e 503extern int open_pack_index(struct packed_git *);
c4001d92 504extern unsigned char* use_pack(struct packed_git *, struct pack_window **, off_t, unsigned int *);
03e79c88 505extern void unuse_pack(struct pack_window **);
42873078 506extern struct packed_git *add_packed_git(const char *, int, int);
d079837e 507extern const unsigned char *nth_packed_object_sha1(struct packed_git *, uint32_t);
c4001d92
SP
508extern off_t find_pack_entry_one(const unsigned char *, struct packed_git *);
509extern void *unpack_entry(struct packed_git *, off_t, enum object_type *, unsigned long *);
72518e9c 510extern unsigned long unpack_object_header_gently(const unsigned char *buf, unsigned long len, enum object_type *type, unsigned long *sizep);
54dab52a 511extern unsigned long get_size_from_delta(struct packed_git *, struct pack_window **, off_t);
c4001d92 512extern const char *packed_object_info_detail(struct packed_git *, off_t, unsigned long *, unsigned long *, unsigned int *, unsigned char *);
9a217f2a 513
8f3f9b09
JH
514/* Dumb servers support */
515extern int update_server_info(int);
516
17712991
LT
517typedef int (*config_fn_t)(const char *, const char *);
518extern int git_default_config(const char *, const char *);
4f629539 519extern int git_config_from_file(config_fn_t fn, const char *);
17712991
LT
520extern int git_config(config_fn_t fn);
521extern int git_config_int(const char *, const char *);
522extern int git_config_bool(const char *, const char *);
10bea152 523extern int git_config_set(const char *, const char *);
4ddba79d 524extern int git_config_set_multivar(const char *, const char *, const char *, int);
0667fcfb 525extern int git_config_rename_section(const char *, const char *);
ab9cb76f 526extern int check_repository_format_version(const char *var, const char *value);
17712991 527
e1b10391
LT
528#define MAX_GITNAME (1000)
529extern char git_default_email[MAX_GITNAME];
530extern char git_default_name[MAX_GITNAME];
531
1a8f2741 532extern const char *git_commit_encoding;
3a55602e 533extern const char *git_log_output_encoding;
4e72dcec 534
f3123c4a 535extern int copy_fd(int ifd, int ofd);
93d26e4c 536extern int read_in_full(int fd, void *buf, size_t count);
e0814056 537extern int write_in_full(int fd, const void *buf, size_t count);
7230e6d0 538extern void write_or_die(int fd, const void *buf, size_t count);
6ce4e61f 539extern int write_or_whine(int fd, const void *buf, size_t count, const char *msg);
e0814056 540extern int write_or_whine_pipe(int fd, const void *buf, size_t count, const char *msg);
ad897215 541
f67b45f8
LT
542/* pager.c */
543extern void setup_pager(void);
85fb65ed 544extern int pager_in_use;
aa086eb8 545extern int pager_use_color;
f67b45f8 546
051308f6 547/* base85 */
f9815772
JM
548int decode_85(char *dst, const char *line, int linelen);
549void encode_85(char *buf, const unsigned char *data, int bytes);
051308f6 550
855419f7 551/* alloc.c */
100c5f3b
LT
552extern void *alloc_blob_node(void);
553extern void *alloc_tree_node(void);
554extern void *alloc_commit_node(void);
555extern void *alloc_tag_node(void);
556extern void *alloc_object_node(void);
855419f7
LT
557extern void alloc_report(void);
558
6ce4e61f 559/* trace.c */
0746d19a 560extern int nfasprintf(char **str, const char *fmt, ...);
6ce4e61f
CC
561extern int nfvasprintf(char **str, const char *fmt, va_list va);
562extern void trace_printf(const char *format, ...);
563extern void trace_argv_printf(const char **argv, int count, const char *format, ...);
564
6c510bee 565/* convert.c */
ac78e548
AR
566extern char *convert_to_git(const char *path, const char *src, unsigned long *sizep);
567extern char *convert_to_working_tree(const char *path, const char *src, unsigned long *sizep);
5e6cfc80 568extern void *convert_sha1_file(const char *path, const unsigned char *sha1, unsigned int mode, enum object_type *type, unsigned long *size);
6c510bee 569
68faf689
JH
570/* match-trees.c */
571void shift_tree(const unsigned char *, const unsigned char *, unsigned char *, int);
572
e83c5163 573#endif /* CACHE_H */