Make read-cache.c "the_index" free.
[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
9eec4795
LT
27/*
28 * A "directory link" is a link to another git directory.
29 *
30 * The value 0160000 is not normally a valid mode, and
31 * also just happens to be S_IFDIR + S_IFLNK
32 *
33 * NOTE! We *really* shouldn't depend on the S_IFxxx macros
34 * always having the same values everywhere. We should use
35 * our internal git values for these things, and then we can
36 * translate that to the OS-specific value. It just so
37 * happens that everybody shares the same bit representation
38 * in the UNIX world (and apparently wider too..)
39 */
40#define S_IFDIRLNK 0160000
41#define S_ISDIRLNK(m) (((m) & S_IFMT) == S_IFDIRLNK)
42
2386d658
LT
43/*
44 * Intensive research over the course of many years has shown that
45 * port 9418 is totally unused by anything else. Or
46 *
47 * Your search - "port 9418" - did not match any documents.
48 *
49 * as www.google.com puts it.
ba8a4970
LT
50 *
51 * This port has been properly assigned for git use by IANA:
52 * git (Assigned-9418) [I06-050728-0001].
53 *
54 * git 9418/tcp git pack transfer service
55 * git 9418/udp git pack transfer service
56 *
57 * with Linus Torvalds <torvalds@osdl.org> as the point of
58 * contact. September 2005.
59 *
60 * See http://www.iana.org/assignments/port-numbers
2386d658
LT
61 */
62#define DEFAULT_GIT_PORT 9418
63
e83c5163
LT
64/*
65 * Basic data structures for the directory cache
e83c5163
LT
66 */
67
68#define CACHE_SIGNATURE 0x44495243 /* "DIRC" */
69struct cache_header {
ccc4feb5
LT
70 unsigned int hdr_signature;
71 unsigned int hdr_version;
72 unsigned int hdr_entries;
e83c5163
LT
73};
74
75/*
76 * The "cache_time" is just the low 32 bits of the
77 * time. It doesn't matter if it overflows - we only
78 * check it for equality in the 32 bits we save.
79 */
80struct cache_time {
81 unsigned int sec;
82 unsigned int nsec;
83};
84
85/*
86 * dev/ino/uid/gid/size are also just tracked to the low 32 bits
87 * Again - this is just a (very strong in practice) heuristic that
88 * the inode hasn't changed.
ccc4feb5
LT
89 *
90 * We save the fields in big-endian order to allow using the
91 * index file over NFS transparently.
e83c5163
LT
92 */
93struct cache_entry {
ccc4feb5
LT
94 struct cache_time ce_ctime;
95 struct cache_time ce_mtime;
96 unsigned int ce_dev;
97 unsigned int ce_ino;
98 unsigned int ce_mode;
99 unsigned int ce_uid;
100 unsigned int ce_gid;
101 unsigned int ce_size;
e83c5163 102 unsigned char sha1[20];
f5cabd13 103 unsigned short ce_flags;
8f1d2e6f 104 char name[FLEX_ARRAY]; /* more */
e83c5163
LT
105};
106
95fd5bf8
LT
107#define CE_NAMEMASK (0x0fff)
108#define CE_STAGEMASK (0x3000)
220a0b52 109#define CE_UPDATE (0x4000)
5f73076c 110#define CE_VALID (0x8000)
aee46198 111#define CE_STAGESHIFT 12
95fd5bf8 112
aee46198
JH
113#define create_ce_flags(len, stage) htons((len) | ((stage) << CE_STAGESHIFT))
114#define ce_namelen(ce) (CE_NAMEMASK & ntohs((ce)->ce_flags))
115#define ce_size(ce) cache_entry_size(ce_namelen(ce))
116#define ce_stage(ce) ((CE_STAGEMASK & ntohs((ce)->ce_flags)) >> CE_STAGESHIFT)
117
e4479470 118#define ce_permissions(mode) (((mode) & 0100) ? 0755 : 0644)
8ae0a8c5
KS
119static inline unsigned int create_ce_mode(unsigned int mode)
120{
8ae0a8c5
KS
121 if (S_ISLNK(mode))
122 return htonl(S_IFLNK);
9eec4795
LT
123 if (S_ISDIR(mode) || S_ISDIRLNK(mode))
124 return htonl(S_IFDIRLNK);
db823d4a 125 return htonl(S_IFREG | ce_permissions(mode));
8ae0a8c5 126}
185c975f
JH
127static inline unsigned int ce_mode_from_stat(struct cache_entry *ce, unsigned int mode)
128{
78a8d641
JS
129 extern int trust_executable_bit, has_symlinks;
130 if (!has_symlinks && S_ISREG(mode) &&
131 ce && S_ISLNK(ntohl(ce->ce_mode)))
132 return ce->ce_mode;
185c975f
JH
133 if (!trust_executable_bit && S_ISREG(mode)) {
134 if (ce && S_ISREG(ntohl(ce->ce_mode)))
135 return ce->ce_mode;
136 return create_ce_mode(0666);
137 }
138 return create_ce_mode(mode);
139}
1b0c7174
JH
140#define canon_mode(mode) \
141 (S_ISREG(mode) ? (S_IFREG | ce_permissions(mode)) : \
9eec4795 142 S_ISLNK(mode) ? S_IFLNK : S_ISDIR(mode) ? S_IFDIR : S_IFDIRLNK)
e4479470 143
aee46198 144#define cache_entry_size(len) ((offsetof(struct cache_entry,name) + (len) + 8) & ~7)
f5cabd13 145
228e94f9
JH
146struct index_state {
147 struct cache_entry **cache;
148 unsigned int cache_nr, cache_alloc, cache_changed;
149 struct cache_tree *cache_tree;
150 time_t timestamp;
151 void *mmap;
152 size_t mmap_size;
153};
154
155extern struct index_state the_index;
156
4aab5b46 157#ifndef NO_THE_INDEX_COMPATIBILITY_MACROS
228e94f9
JH
158#define active_cache (the_index.cache)
159#define active_nr (the_index.cache_nr)
160#define active_alloc (the_index.cache_alloc)
161#define active_cache_changed (the_index.cache_changed)
162#define active_cache_tree (the_index.cache_tree)
e83c5163 163
4aab5b46
JH
164#define read_cache() read_index(&the_index)
165#define read_cache_from(path) read_index_from(&the_index, (path))
166#define write_cache(newfd, cache, entries) write_index(&the_index, (newfd))
167#define discard_cache() discard_index(&the_index)
168#define cache_name_pos(name, namelen) index_name_pos(&the_index,(name),(namelen))
169#define add_cache_entry(ce, option) add_index_entry(&the_index, (ce), (option))
170#define remove_cache_entry_at(pos) remove_index_entry_at(&the_index, (pos))
171#define remove_file_from_cache(path) remove_file_from_index(&the_index, (path))
172#define add_file_to_cache(path, verbose) add_file_to_index(&the_index, (path), (verbose))
173#define refresh_cache(flags) refresh_index(&the_index, flags)
174#define ce_match_stat(ce, st, really) ie_match_stat(&the_index, (ce), (st), (really))
175#define ce_modified(ce, st, really) ie_modified(&the_index, (ce), (st), (really))
176#endif
177
edaec3fb
JH
178enum object_type {
179 OBJ_BAD = -1,
180 OBJ_NONE = 0,
181 OBJ_COMMIT = 1,
182 OBJ_TREE = 2,
183 OBJ_BLOB = 3,
184 OBJ_TAG = 4,
185 /* 5 for future expansion */
186 OBJ_OFS_DELTA = 6,
187 OBJ_REF_DELTA = 7,
188 OBJ_MAX,
189};
190
8ac069ac
JH
191#define GIT_DIR_ENVIRONMENT "GIT_DIR"
192#define DEFAULT_GIT_DIR_ENVIRONMENT ".git"
d19938ab 193#define DB_ENVIRONMENT "GIT_OBJECT_DIRECTORY"
bb233d69 194#define INDEX_ENVIRONMENT "GIT_INDEX_FILE"
5da5c8f4 195#define GRAFT_ENVIRONMENT "GIT_GRAFT_FILE"
d4ebc36c
JH
196#define TEMPLATE_DIR_ENVIRONMENT "GIT_TEMPLATE_DIR"
197#define CONFIG_ENVIRONMENT "GIT_CONFIG"
198#define CONFIG_LOCAL_ENVIRONMENT "GIT_CONFIG_LOCAL"
199#define EXEC_PATH_ENVIRONMENT "GIT_EXEC_PATH"
d0bfd026
JH
200#define GITATTRIBUTES_FILE ".gitattributes"
201#define INFOATTRIBUTES_FILE "info/attributes"
f48fd688 202#define ATTRIBUTE_MACRO_PREFIX "[attr]"
bb233d69 203
7d1864ce
JH
204extern int is_bare_repository_cfg;
205extern int is_bare_repository(void);
68025633 206extern int is_inside_git_dir(void);
c5fba16c 207extern const char *get_git_dir(void);
8ac069ac 208extern char *get_object_directory(void);
95fc7512 209extern char *get_refs_directory(void);
8ac069ac 210extern char *get_index_file(void);
5da5c8f4 211extern char *get_graft_file(void);
8ac069ac
JH
212
213#define ALTERNATE_DB_ENVIRONMENT "GIT_ALTERNATE_OBJECT_DIRECTORIES"
bb233d69 214
6b5ee137 215extern const char **get_pathspec(const char *prefix, const char **pathspec);
4ca06608 216extern const char *setup_git_directory_gently(int *);
d288a700 217extern const char *setup_git_directory(void);
6b5ee137 218extern const char *prefix_path(const char *prefix, int len, const char *path);
4ca06608 219extern const char *prefix_filename(const char *prefix, int len, const char *path);
e23d0b4a 220extern void verify_filename(const char *prefix, const char *name);
ea92f41f 221extern void verify_non_filename(const char *prefix, const char *name);
d288a700 222
e83c5163
LT
223#define alloc_nr(x) (((x)+16)*3/2)
224
734aab75 225/* Initialize and use the cache information */
4aab5b46
JH
226extern int read_index(struct index_state *);
227extern int read_index_from(struct index_state *, const char *path);
228extern int write_index(struct index_state *, int newfd);
229extern int discard_index(struct index_state *);
8dcf39c4 230extern int verify_path(const char *path);
4aab5b46 231extern int index_name_pos(struct index_state *, const char *name, int namelen);
192268c1
JH
232#define ADD_CACHE_OK_TO_ADD 1 /* Ok to add */
233#define ADD_CACHE_OK_TO_REPLACE 2 /* Ok to replace file/directory */
b155725d 234#define ADD_CACHE_SKIP_DFCHECK 4 /* Ok to skip DF conflict checks */
4aab5b46 235extern int add_index_entry(struct index_state *, struct cache_entry *ce, int option);
8fd2cb40 236extern struct cache_entry *refresh_cache_entry(struct cache_entry *ce, int really);
4aab5b46
JH
237extern int remove_index_entry_at(struct index_state *, int pos);
238extern int remove_file_from_index(struct index_state *, const char *path);
239extern int add_file_to_index(struct index_state *, const char *path, int verbose);
dbbce55b 240extern int ce_same_name(struct cache_entry *a, struct cache_entry *b);
4aab5b46
JH
241extern int ie_match_stat(struct index_state *, struct cache_entry *, struct stat *, int);
242extern int ie_modified(struct index_state *, struct cache_entry *, struct stat *, int);
c0fd1f51 243extern int ce_path_match(const struct cache_entry *ce, const char **pathspec);
53bca91a 244extern int index_fd(unsigned char *sha1, int fd, struct stat *st, int write_object, enum object_type type, const char *path);
e7332f96 245extern int read_pipe(int fd, char** return_buf, unsigned long* return_size);
024510c8 246extern int index_pipe(unsigned char *sha1, int fd, const char *type, int write_object);
ec1fcc16 247extern int index_path(unsigned char *sha1, const char *path, struct stat *st, int write_object);
415e96c8
JH
248extern void fill_stat_cache_info(struct cache_entry *ce, struct stat *st);
249
405e5b2f
LT
250#define REFRESH_REALLY 0x0001 /* ignore_valid */
251#define REFRESH_UNMERGED 0x0002 /* allow unmerged */
252#define REFRESH_QUIET 0x0004 /* be quiet about it */
253#define REFRESH_IGNORE_MISSING 0x0008 /* ignore non-existent */
4aab5b46 254extern int refresh_index(struct index_state *, unsigned int flags);
405e5b2f 255
021b6e45
JH
256struct lock_file {
257 struct lock_file *next;
5e635e39 258 pid_t owner;
1084b845 259 char on_list;
021b6e45 260 char filename[PATH_MAX];
415e96c8 261};
40aaae88 262extern int hold_lock_file_for_update(struct lock_file *, const char *path, int);
021b6e45 263extern int commit_lock_file(struct lock_file *);
30ca07a2
JH
264
265extern int hold_locked_index(struct lock_file *, int);
266extern int commit_locked_index(struct lock_file *);
5e7f56ac 267extern void set_alternate_index_output(const char *);
30ca07a2 268
021b6e45 269extern void rollback_lock_file(struct lock_file *);
1401f46b 270extern int delete_ref(const char *, const unsigned char *sha1);
734aab75 271
2ae1c53b 272/* Environment bits from configuration mechanism */
93821bd9 273extern int use_legacy_headers;
17712991 274extern int trust_executable_bit;
78a8d641 275extern int has_symlinks;
5f73076c 276extern int assume_unchanged;
9f0bb90d 277extern int prefer_symlink_refs;
6de08ae6 278extern int log_all_ref_updates;
2f8acdb3 279extern int warn_ambiguous_refs;
457f06d6 280extern int shared_repository;
2ae1c53b 281extern const char *apply_default_whitespace;
12f6c308 282extern int zlib_compression_level;
60bb8b14 283extern size_t packed_git_window_size;
77ccc5bb 284extern size_t packed_git_limit;
18bdec11 285extern size_t delta_base_cache_limit;
6c510bee 286extern int auto_crlf;
17712991 287
ab9cb76f
JH
288#define GIT_REPO_VERSION 0
289extern int repository_format_version;
290extern int check_repository_format(void);
291
734aab75
LT
292#define MTIME_CHANGED 0x0001
293#define CTIME_CHANGED 0x0002
294#define OWNER_CHANGED 0x0004
295#define MODE_CHANGED 0x0008
296#define INODE_CHANGED 0x0010
297#define DATA_CHANGED 0x0020
8ae0a8c5 298#define TYPE_CHANGED 0x0040
e83c5163
LT
299
300/* Return a statically allocated filename matching the sha1 signature */
4ec99bf0
TS
301extern char *mkpath(const char *fmt, ...) __attribute__((format (printf, 1, 2)));
302extern char *git_path(const char *fmt, ...) __attribute__((format (printf, 1, 2)));
73134b6d 303extern char *sha1_file_name(const unsigned char *sha1);
bf592c50
DB
304extern char *sha1_pack_name(const unsigned char *sha1);
305extern char *sha1_pack_index_name(const unsigned char *sha1);
013f276e 306extern const char *find_unique_abbrev(const unsigned char *sha1, int);
88cd621d 307extern const unsigned char null_sha1[20];
0bef57ee
DR
308static inline int is_null_sha1(const unsigned char *sha1)
309{
310 return !memcmp(sha1, null_sha1, 20);
311}
a89fccd2
DR
312static inline int hashcmp(const unsigned char *sha1, const unsigned char *sha2)
313{
314 return memcmp(sha1, sha2, 20);
315}
e702496e
SP
316static inline void hashcpy(unsigned char *sha_dst, const unsigned char *sha_src)
317{
318 memcpy(sha_dst, sha_src, 20);
319}
a8e0d16d
JH
320static inline void hashclr(unsigned char *hash)
321{
322 memset(hash, 0, 20);
323}
e83c5163 324
f2db68ed
HE
325int git_mkstemp(char *path, size_t n, const char *template);
326
94df2506
JH
327enum sharedrepo {
328 PERM_UMASK = 0,
329 PERM_GROUP,
330 PERM_EVERYBODY
331};
332int git_config_perm(const char *var, const char *value);
457f06d6 333int adjust_shared_perm(const char *path);
b2cb9425 334int safe_create_leading_directories(char *path);
bd22c904 335char *enter_repo(char *path, int strict);
b2cb9425 336
e83c5163 337/* Read and unpack a sha1 file into memory, write memory to a sha1 file */
21666f1a 338extern int sha1_object_info(const unsigned char *, unsigned long *);
21666f1a 339extern void * read_sha1_file(const unsigned char *sha1, enum object_type *type, unsigned long *size);
ce9fbf16 340extern int hash_sha1_file(const void *buf, unsigned long len, const char *type, unsigned char *sha1);
bf0f910d 341extern int write_sha1_file(void *buf, unsigned long len, const char *type, unsigned char *return_sha1);
21666f1a 342extern int pretend_sha1_file(void *, unsigned long, enum object_type, unsigned char *);
8237b185 343
5d6ccf5c 344extern int check_sha1_signature(const unsigned char *sha1, void *buf, unsigned long size, const char *type);
e83c5163 345
70b9829e
DB
346extern int write_sha1_from_fd(const unsigned char *sha1, int fd, char *buffer,
347 size_t bufsize, size_t *bufposn);
a5eda52b 348extern int write_sha1_to_fd(int fd, const unsigned char *sha1);
839837b9 349extern int move_temp_to_file(const char *tmpfile, const char *filename);
8237b185 350
106d710b 351extern int has_sha1_pack(const unsigned char *sha1, const char **ignore);
8237b185 352extern int has_sha1_file(const unsigned char *sha1);
bb6b8e4f
JH
353extern void *map_sha1_file(const unsigned char *sha1, unsigned long *);
354extern int legacy_loose_object(unsigned char *);
8237b185 355
bf592c50
DB
356extern int has_pack_file(const unsigned char *sha1);
357extern int has_pack_index(const unsigned char *sha1);
358
e49521b5
JH
359extern signed char hexval_table[256];
360static inline unsigned int hexval(unsigned int c)
361{
362 return hexval_table[c];
363}
364
e83c5163 365/* Convert to/from hex/sha1 representation */
46a6c262
JH
366#define MINIMUM_ABBREV 4
367#define DEFAULT_ABBREV 7
368
3c249c95 369extern int get_sha1(const char *str, unsigned char *sha1);
197ee8c9
LT
370extern int get_sha1_hex(const char *hex, unsigned char *sha1);
371extern char *sha1_to_hex(const unsigned char *sha1); /* static buffer result! */
ca8db142 372extern int read_ref(const char *filename, unsigned char *sha1);
8da19775 373extern const char *resolve_ref(const char *path, unsigned char *sha1, int, int *);
e86eb666 374extern int dwim_ref(const char *str, int len, unsigned char *sha1, char **ref);
eb3a4822 375extern int dwim_log(const char *str, int len, unsigned char *sha1, char **ref);
e86eb666 376
8b5157e4 377extern int create_symref(const char *ref, const char *refs_heads_master, const char *logmsg);
c847f537 378extern int validate_headref(const char *ref);
e83c5163 379
958ba6c9 380extern int base_name_compare(const char *name1, int len1, int mode1, const char *name2, int len2, int mode2);
79517a06 381extern int cache_name_compare(const char *name1, int len1, const char *name2, int len2);
e83c5163 382
40469ee9 383extern void *read_object_with_reference(const unsigned char *sha1,
bf0f910d 384 const char *required_type,
40469ee9
JH
385 unsigned long *size,
386 unsigned char *sha1_ret);
f4913f91 387
f8493ec0
JS
388enum date_mode { DATE_NORMAL = 0, DATE_RELATIVE, DATE_SHORT };
389const char *show_date(unsigned long time, int timezone, enum date_mode mode);
2a387043 390const char *show_rfc2822_date(unsigned long time, int timezone);
2a39064c 391int parse_date(const char *date, char *buf, int bufsize);
ecee9d9e 392void datestamp(char *buf, int bufsize);
3c07b1d1 393unsigned long approxidate(const char *);
ecee9d9e 394
749be728
JH
395extern const char *git_author_info(int);
396extern const char *git_committer_info(int);
798123af 397extern const char *fmt_ident(const char *name, const char *email, const char *date_str, int);
6aa33f40 398
12dccc16
LT
399struct checkout {
400 const char *base_dir;
401 int base_dir_len;
402 unsigned force:1,
403 quiet:1,
404 not_new:1,
405 refresh_cache:1;
406};
407
de84f99c 408extern int checkout_entry(struct cache_entry *ce, struct checkout *state, char *topath);
12dccc16 409
9a217f2a 410extern struct alternate_object_database {
d5a63b99 411 struct alternate_object_database *next;
9a217f2a 412 char *name;
8f1d2e6f 413 char base[FLEX_ARRAY]; /* more */
d5a63b99 414} *alt_odb_list;
9a217f2a
JH
415extern void prepare_alt_odb(void);
416
c41ee586
SP
417struct pack_window {
418 struct pack_window *next;
419 unsigned char *base;
420 off_t offset;
421 size_t len;
422 unsigned int last_used;
423 unsigned int inuse_cnt;
424};
425
9a217f2a
JH
426extern struct packed_git {
427 struct packed_git *next;
c41ee586 428 struct pack_window *windows;
2dc3a234 429 off_t pack_size;
57059091
NP
430 const void *index_data;
431 size_t index_size;
432 uint32_t num_objects;
42873078 433 int index_version;
57059091 434 time_t mtime;
9bc879c1 435 int pack_fd;
9d835df2 436 int pack_local;
bf592c50 437 unsigned char sha1[20];
8f1d2e6f
JH
438 /* something like ".git/objects/pack/xxxxx.pack" */
439 char pack_name[FLEX_ARRAY]; /* more */
9a217f2a 440} *packed_git;
f3bf9224
JH
441
442struct pack_entry {
c4001d92 443 off_t offset;
f3bf9224
JH
444 unsigned char sha1[20];
445 struct packed_git *p;
446};
447
d1c133f5
LT
448struct ref {
449 struct ref *next;
450 unsigned char old_sha1[20];
451 unsigned char new_sha1[20];
ff27adf3 452 unsigned char force;
f88395ac 453 struct ref *peer_ref; /* when renaming */
8f1d2e6f 454 char name[FLEX_ARRAY]; /* more */
d1c133f5
LT
455};
456
2718ff09
LT
457#define REF_NORMAL (1u << 0)
458#define REF_HEADS (1u << 1)
459#define REF_TAGS (1u << 2)
460
f42a5c4e 461extern pid_t git_connect(int fd[2], char *url, const char *prog);
f7192598 462extern int finish_connect(pid_t pid);
013e7c7f 463extern int path_match(const char *path, int nr, char **match);
f88395ac
JH
464extern int match_refs(struct ref *src, struct ref *dst, struct ref ***dst_tail,
465 int nr_refspec, char **refspec, int all);
41cb7488 466extern int get_ack(int fd, unsigned char *result_sha1);
2718ff09 467extern struct ref **get_remote_heads(int in, struct ref **list, int nr_match, char **match, unsigned int flags);
211b5f9e 468extern int server_supports(const char *feature);
f7192598 469
bf592c50 470extern struct packed_git *parse_pack_index(unsigned char *sha1);
2ab141a2 471extern struct packed_git *parse_pack_index_file(const unsigned char *sha1,
42873078 472 const char *idx_path);
bf592c50 473
9a217f2a 474extern void prepare_packed_git(void);
fc04c412 475extern void reprepare_packed_git(void);
bf592c50
DB
476extern void install_packed_git(struct packed_git *pack);
477
478extern struct packed_git *find_sha1_pack(const unsigned char *sha1,
479 struct packed_git *packs);
480
276bc2ca 481extern void pack_report(void);
c4001d92 482extern unsigned char* use_pack(struct packed_git *, struct pack_window **, off_t, unsigned int *);
03e79c88 483extern void unuse_pack(struct pack_window **);
42873078 484extern struct packed_git *add_packed_git(const char *, int, int);
d72308e0 485extern const unsigned char *nth_packed_object_sha1(const struct packed_git *, uint32_t);
c4001d92
SP
486extern off_t find_pack_entry_one(const unsigned char *, struct packed_git *);
487extern void *unpack_entry(struct packed_git *, off_t, enum object_type *, unsigned long *);
72518e9c 488extern unsigned long unpack_object_header_gently(const unsigned char *buf, unsigned long len, enum object_type *type, unsigned long *sizep);
54dab52a 489extern unsigned long get_size_from_delta(struct packed_git *, struct pack_window **, off_t);
c4001d92 490extern const char *packed_object_info_detail(struct packed_git *, off_t, unsigned long *, unsigned long *, unsigned int *, unsigned char *);
9a217f2a 491
8f3f9b09
JH
492/* Dumb servers support */
493extern int update_server_info(int);
494
17712991
LT
495typedef int (*config_fn_t)(const char *, const char *);
496extern int git_default_config(const char *, const char *);
4f629539 497extern int git_config_from_file(config_fn_t fn, const char *);
17712991
LT
498extern int git_config(config_fn_t fn);
499extern int git_config_int(const char *, const char *);
500extern int git_config_bool(const char *, const char *);
10bea152 501extern int git_config_set(const char *, const char *);
4ddba79d 502extern int git_config_set_multivar(const char *, const char *, const char *, int);
0667fcfb 503extern int git_config_rename_section(const char *, const char *);
ab9cb76f 504extern int check_repository_format_version(const char *var, const char *value);
17712991 505
e1b10391
LT
506#define MAX_GITNAME (1000)
507extern char git_default_email[MAX_GITNAME];
508extern char git_default_name[MAX_GITNAME];
509
1a8f2741 510extern const char *git_commit_encoding;
3a55602e 511extern const char *git_log_output_encoding;
4e72dcec 512
f3123c4a 513extern int copy_fd(int ifd, int ofd);
93d26e4c 514extern int read_in_full(int fd, void *buf, size_t count);
e0814056 515extern int write_in_full(int fd, const void *buf, size_t count);
7230e6d0 516extern void write_or_die(int fd, const void *buf, size_t count);
6ce4e61f 517extern int write_or_whine(int fd, const void *buf, size_t count, const char *msg);
e0814056 518extern int write_or_whine_pipe(int fd, const void *buf, size_t count, const char *msg);
ad897215 519
f67b45f8
LT
520/* pager.c */
521extern void setup_pager(void);
85fb65ed 522extern int pager_in_use;
aa086eb8 523extern int pager_use_color;
f67b45f8 524
051308f6 525/* base85 */
f9815772
JM
526int decode_85(char *dst, const char *line, int linelen);
527void encode_85(char *buf, const unsigned char *data, int bytes);
051308f6 528
855419f7 529/* alloc.c */
100c5f3b
LT
530extern void *alloc_blob_node(void);
531extern void *alloc_tree_node(void);
532extern void *alloc_commit_node(void);
533extern void *alloc_tag_node(void);
534extern void *alloc_object_node(void);
855419f7
LT
535extern void alloc_report(void);
536
6ce4e61f 537/* trace.c */
0746d19a 538extern int nfasprintf(char **str, const char *fmt, ...);
6ce4e61f
CC
539extern int nfvasprintf(char **str, const char *fmt, va_list va);
540extern void trace_printf(const char *format, ...);
541extern void trace_argv_printf(const char **argv, int count, const char *format, ...);
542
6c510bee 543/* convert.c */
ac78e548
AR
544extern char *convert_to_git(const char *path, const char *src, unsigned long *sizep);
545extern char *convert_to_working_tree(const char *path, const char *src, unsigned long *sizep);
6c510bee 546
68faf689
JH
547/* match-trees.c */
548void shift_tree(const unsigned char *, const unsigned char *, unsigned char *, int);
549
e83c5163 550#endif /* CACHE_H */