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[git/git.git] / cache.h
1 #ifndef CACHE_H
2 #define CACHE_H
3
4 #include "git-compat-util.h"
5
6 #include SHA1_HEADER
7 #include <zlib.h>
8
9 #if ZLIB_VERNUM < 0x1200
10 #define deflateBound(c,s) ((s) + (((s) + 7) >> 3) + (((s) + 63) >> 6) + 11)
11 #endif
12
13 #if defined(DT_UNKNOWN) && !defined(NO_D_TYPE_IN_DIRENT)
14 #define DTYPE(de) ((de)->d_type)
15 #else
16 #undef DT_UNKNOWN
17 #undef DT_DIR
18 #undef DT_REG
19 #undef DT_LNK
20 #define DT_UNKNOWN 0
21 #define DT_DIR 1
22 #define DT_REG 2
23 #define DT_LNK 3
24 #define DTYPE(de) DT_UNKNOWN
25 #endif
26
27 /* unknown mode (impossible combination S_IFIFO|S_IFCHR) */
28 #define S_IFINVALID 0030000
29
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 */
43 #define S_IFGITLINK 0160000
44 #define S_ISGITLINK(m) (((m) & S_IFMT) == S_IFGITLINK)
45
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.
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
64 */
65 #define DEFAULT_GIT_PORT 9418
66
67 /*
68 * Basic data structures for the directory cache
69 */
70
71 #define CACHE_SIGNATURE 0x44495243 /* "DIRC" */
72 struct cache_header {
73 unsigned int hdr_signature;
74 unsigned int hdr_version;
75 unsigned int hdr_entries;
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 */
83 struct 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.
92 *
93 * We save the fields in big-endian order to allow using the
94 * index file over NFS transparently.
95 */
96 struct cache_entry {
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;
105 unsigned char sha1[20];
106 unsigned short ce_flags;
107 char name[FLEX_ARRAY]; /* more */
108 };
109
110 #define CE_NAMEMASK (0x0fff)
111 #define CE_STAGEMASK (0x3000)
112 #define CE_UPDATE (0x4000)
113 #define CE_VALID (0x8000)
114 #define CE_STAGESHIFT 12
115
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
121 #define ce_permissions(mode) (((mode) & 0100) ? 0755 : 0644)
122 static inline unsigned int create_ce_mode(unsigned int mode)
123 {
124 if (S_ISLNK(mode))
125 return htonl(S_IFLNK);
126 if (S_ISDIR(mode) || S_ISGITLINK(mode))
127 return htonl(S_IFGITLINK);
128 return htonl(S_IFREG | ce_permissions(mode));
129 }
130 static inline unsigned int ce_mode_from_stat(struct cache_entry *ce, unsigned int mode)
131 {
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;
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 }
143 #define canon_mode(mode) \
144 (S_ISREG(mode) ? (S_IFREG | ce_permissions(mode)) : \
145 S_ISLNK(mode) ? S_IFLNK : S_ISDIR(mode) ? S_IFDIR : S_IFGITLINK)
146
147 #define cache_entry_size(len) ((offsetof(struct cache_entry,name) + (len) + 8) & ~7)
148
149 struct 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
158 extern struct index_state the_index;
159
160 #ifndef NO_THE_INDEX_COMPATIBILITY_MACROS
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)
166
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
180
181 enum 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
194 #define GIT_DIR_ENVIRONMENT "GIT_DIR"
195 #define DEFAULT_GIT_DIR_ENVIRONMENT ".git"
196 #define DB_ENVIRONMENT "GIT_OBJECT_DIRECTORY"
197 #define INDEX_ENVIRONMENT "GIT_INDEX_FILE"
198 #define GRAFT_ENVIRONMENT "GIT_GRAFT_FILE"
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"
203 #define GITATTRIBUTES_FILE ".gitattributes"
204 #define INFOATTRIBUTES_FILE "info/attributes"
205 #define ATTRIBUTE_MACRO_PREFIX "[attr]"
206
207 extern int is_bare_repository_cfg;
208 extern int is_bare_repository(void);
209 extern int is_inside_git_dir(void);
210 extern const char *get_git_dir(void);
211 extern char *get_object_directory(void);
212 extern char *get_refs_directory(void);
213 extern char *get_index_file(void);
214 extern char *get_graft_file(void);
215
216 #define ALTERNATE_DB_ENVIRONMENT "GIT_ALTERNATE_OBJECT_DIRECTORIES"
217
218 extern const char **get_pathspec(const char *prefix, const char **pathspec);
219 extern const char *setup_git_directory_gently(int *);
220 extern const char *setup_git_directory(void);
221 extern const char *prefix_path(const char *prefix, int len, const char *path);
222 extern const char *prefix_filename(const char *prefix, int len, const char *path);
223 extern void verify_filename(const char *prefix, const char *name);
224 extern void verify_non_filename(const char *prefix, const char *name);
225
226 #define alloc_nr(x) (((x)+16)*3/2)
227
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 { \
237 if ((nr) >= alloc) { \
238 alloc = alloc_nr(alloc); \
239 x = xrealloc((x), alloc * sizeof(*(x))); \
240 } \
241 } while(0)
242
243 /* Initialize and use the cache information */
244 extern int read_index(struct index_state *);
245 extern int read_index_from(struct index_state *, const char *path);
246 extern int write_index(struct index_state *, int newfd);
247 extern int discard_index(struct index_state *);
248 extern int verify_path(const char *path);
249 extern int index_name_pos(struct index_state *, const char *name, int namelen);
250 #define ADD_CACHE_OK_TO_ADD 1 /* Ok to add */
251 #define ADD_CACHE_OK_TO_REPLACE 2 /* Ok to replace file/directory */
252 #define ADD_CACHE_SKIP_DFCHECK 4 /* Ok to skip DF conflict checks */
253 extern int add_index_entry(struct index_state *, struct cache_entry *ce, int option);
254 extern struct cache_entry *refresh_cache_entry(struct cache_entry *ce, int really);
255 extern int remove_index_entry_at(struct index_state *, int pos);
256 extern int remove_file_from_index(struct index_state *, const char *path);
257 extern int add_file_to_index(struct index_state *, const char *path, int verbose);
258 extern int ce_same_name(struct cache_entry *a, struct cache_entry *b);
259 extern int ie_match_stat(struct index_state *, struct cache_entry *, struct stat *, int);
260 extern int ie_modified(struct index_state *, struct cache_entry *, struct stat *, int);
261 extern int ce_path_match(const struct cache_entry *ce, const char **pathspec);
262 extern int index_fd(unsigned char *sha1, int fd, struct stat *st, int write_object, enum object_type type, const char *path);
263 extern int read_pipe(int fd, char** return_buf, unsigned long* return_size);
264 extern int index_pipe(unsigned char *sha1, int fd, const char *type, int write_object);
265 extern int index_path(unsigned char *sha1, const char *path, struct stat *st, int write_object);
266 extern void fill_stat_cache_info(struct cache_entry *ce, struct stat *st);
267
268 #define REFRESH_REALLY 0x0001 /* ignore_valid */
269 #define REFRESH_UNMERGED 0x0002 /* allow unmerged */
270 #define REFRESH_QUIET 0x0004 /* be quiet about it */
271 #define REFRESH_IGNORE_MISSING 0x0008 /* ignore non-existent */
272 extern int refresh_index(struct index_state *, unsigned int flags);
273
274 struct lock_file {
275 struct lock_file *next;
276 pid_t owner;
277 char on_list;
278 char filename[PATH_MAX];
279 };
280 extern int hold_lock_file_for_update(struct lock_file *, const char *path, int);
281 extern int commit_lock_file(struct lock_file *);
282
283 extern int hold_locked_index(struct lock_file *, int);
284 extern int commit_locked_index(struct lock_file *);
285 extern void set_alternate_index_output(const char *);
286
287 extern void rollback_lock_file(struct lock_file *);
288 extern int delete_ref(const char *, const unsigned char *sha1);
289
290 /* Environment bits from configuration mechanism */
291 extern int trust_executable_bit;
292 extern int has_symlinks;
293 extern int assume_unchanged;
294 extern int prefer_symlink_refs;
295 extern int log_all_ref_updates;
296 extern int warn_ambiguous_refs;
297 extern int shared_repository;
298 extern const char *apply_default_whitespace;
299 extern int zlib_compression_level;
300 extern int core_compression_level;
301 extern int core_compression_seen;
302 extern size_t packed_git_window_size;
303 extern size_t packed_git_limit;
304 extern size_t delta_base_cache_limit;
305 extern int auto_crlf;
306
307 #define GIT_REPO_VERSION 0
308 extern int repository_format_version;
309 extern int check_repository_format(void);
310
311 #define MTIME_CHANGED 0x0001
312 #define CTIME_CHANGED 0x0002
313 #define OWNER_CHANGED 0x0004
314 #define MODE_CHANGED 0x0008
315 #define INODE_CHANGED 0x0010
316 #define DATA_CHANGED 0x0020
317 #define TYPE_CHANGED 0x0040
318
319 /* Return a statically allocated filename matching the sha1 signature */
320 extern char *mkpath(const char *fmt, ...) __attribute__((format (printf, 1, 2)));
321 extern char *git_path(const char *fmt, ...) __attribute__((format (printf, 1, 2)));
322 extern char *sha1_file_name(const unsigned char *sha1);
323 extern char *sha1_pack_name(const unsigned char *sha1);
324 extern char *sha1_pack_index_name(const unsigned char *sha1);
325 extern const char *find_unique_abbrev(const unsigned char *sha1, int);
326 extern const unsigned char null_sha1[20];
327 static inline int is_null_sha1(const unsigned char *sha1)
328 {
329 return !memcmp(sha1, null_sha1, 20);
330 }
331 static inline int hashcmp(const unsigned char *sha1, const unsigned char *sha2)
332 {
333 return memcmp(sha1, sha2, 20);
334 }
335 static inline void hashcpy(unsigned char *sha_dst, const unsigned char *sha_src)
336 {
337 memcpy(sha_dst, sha_src, 20);
338 }
339 static inline void hashclr(unsigned char *hash)
340 {
341 memset(hash, 0, 20);
342 }
343
344 int git_mkstemp(char *path, size_t n, const char *template);
345
346 enum sharedrepo {
347 PERM_UMASK = 0,
348 PERM_GROUP,
349 PERM_EVERYBODY
350 };
351 int git_config_perm(const char *var, const char *value);
352 int adjust_shared_perm(const char *path);
353 int safe_create_leading_directories(char *path);
354 char *enter_repo(char *path, int strict);
355
356 /* Read and unpack a sha1 file into memory, write memory to a sha1 file */
357 extern int sha1_object_info(const unsigned char *, unsigned long *);
358 extern void * read_sha1_file(const unsigned char *sha1, enum object_type *type, unsigned long *size);
359 extern int hash_sha1_file(const void *buf, unsigned long len, const char *type, unsigned char *sha1);
360 extern int write_sha1_file(void *buf, unsigned long len, const char *type, unsigned char *return_sha1);
361 extern int pretend_sha1_file(void *, unsigned long, enum object_type, unsigned char *);
362
363 extern int check_sha1_signature(const unsigned char *sha1, void *buf, unsigned long size, const char *type);
364
365 extern int write_sha1_from_fd(const unsigned char *sha1, int fd, char *buffer,
366 size_t bufsize, size_t *bufposn);
367 extern int write_sha1_to_fd(int fd, const unsigned char *sha1);
368 extern int move_temp_to_file(const char *tmpfile, const char *filename);
369
370 extern int has_sha1_pack(const unsigned char *sha1, const char **ignore);
371 extern int has_sha1_file(const unsigned char *sha1);
372
373 extern int has_pack_file(const unsigned char *sha1);
374 extern int has_pack_index(const unsigned char *sha1);
375
376 extern const signed char hexval_table[256];
377 static inline unsigned int hexval(unsigned char c)
378 {
379 return hexval_table[c];
380 }
381
382 /* Convert to/from hex/sha1 representation */
383 #define MINIMUM_ABBREV 4
384 #define DEFAULT_ABBREV 7
385
386 extern int get_sha1(const char *str, unsigned char *sha1);
387 extern int get_sha1_with_mode(const char *str, unsigned char *sha1, unsigned *mode);
388 extern int get_sha1_hex(const char *hex, unsigned char *sha1);
389 extern char *sha1_to_hex(const unsigned char *sha1); /* static buffer result! */
390 extern int read_ref(const char *filename, unsigned char *sha1);
391 extern const char *resolve_ref(const char *path, unsigned char *sha1, int, int *);
392 extern int dwim_ref(const char *str, int len, unsigned char *sha1, char **ref);
393 extern int dwim_log(const char *str, int len, unsigned char *sha1, char **ref);
394
395 extern int create_symref(const char *ref, const char *refs_heads_master, const char *logmsg);
396 extern int validate_headref(const char *ref);
397
398 extern int base_name_compare(const char *name1, int len1, int mode1, const char *name2, int len2, int mode2);
399 extern int cache_name_compare(const char *name1, int len1, const char *name2, int len2);
400
401 extern void *read_object_with_reference(const unsigned char *sha1,
402 const char *required_type,
403 unsigned long *size,
404 unsigned char *sha1_ret);
405
406 enum date_mode { DATE_NORMAL = 0, DATE_RELATIVE, DATE_SHORT, DATE_LOCAL };
407 const char *show_date(unsigned long time, int timezone, enum date_mode mode);
408 const char *show_rfc2822_date(unsigned long time, int timezone);
409 int parse_date(const char *date, char *buf, int bufsize);
410 void datestamp(char *buf, int bufsize);
411 unsigned long approxidate(const char *);
412
413 extern const char *git_author_info(int);
414 extern const char *git_committer_info(int);
415 extern const char *fmt_ident(const char *name, const char *email, const char *date_str, int);
416
417 struct checkout {
418 const char *base_dir;
419 int base_dir_len;
420 unsigned force:1,
421 quiet:1,
422 not_new:1,
423 refresh_cache:1;
424 };
425
426 extern int checkout_entry(struct cache_entry *ce, const struct checkout *state, char *topath);
427 extern int has_symlink_leading_path(const char *name, char *last_symlink);
428
429 extern struct alternate_object_database {
430 struct alternate_object_database *next;
431 char *name;
432 char base[FLEX_ARRAY]; /* more */
433 } *alt_odb_list;
434 extern void prepare_alt_odb(void);
435
436 struct pack_window {
437 struct pack_window *next;
438 unsigned char *base;
439 off_t offset;
440 size_t len;
441 unsigned int last_used;
442 unsigned int inuse_cnt;
443 };
444
445 extern struct packed_git {
446 struct packed_git *next;
447 struct pack_window *windows;
448 off_t pack_size;
449 const void *index_data;
450 size_t index_size;
451 uint32_t num_objects;
452 int index_version;
453 time_t mtime;
454 int pack_fd;
455 int pack_local;
456 unsigned char sha1[20];
457 /* something like ".git/objects/pack/xxxxx.pack" */
458 char pack_name[FLEX_ARRAY]; /* more */
459 } *packed_git;
460
461 struct pack_entry {
462 off_t offset;
463 unsigned char sha1[20];
464 struct packed_git *p;
465 };
466
467 struct ref {
468 struct ref *next;
469 unsigned char old_sha1[20];
470 unsigned char new_sha1[20];
471 unsigned char force;
472 struct ref *peer_ref; /* when renaming */
473 char name[FLEX_ARRAY]; /* more */
474 };
475
476 #define REF_NORMAL (1u << 0)
477 #define REF_HEADS (1u << 1)
478 #define REF_TAGS (1u << 2)
479
480 #define CONNECT_VERBOSE (1u << 0)
481 extern pid_t git_connect(int fd[2], char *url, const char *prog, int flags);
482 extern int finish_connect(pid_t pid);
483 extern int path_match(const char *path, int nr, char **match);
484 extern int get_ack(int fd, unsigned char *result_sha1);
485 extern struct ref **get_remote_heads(int in, struct ref **list, int nr_match, char **match, unsigned int flags);
486 extern int server_supports(const char *feature);
487
488 extern struct packed_git *parse_pack_index(unsigned char *sha1);
489 extern struct packed_git *parse_pack_index_file(const unsigned char *sha1,
490 const char *idx_path);
491
492 extern void prepare_packed_git(void);
493 extern void reprepare_packed_git(void);
494 extern void install_packed_git(struct packed_git *pack);
495
496 extern struct packed_git *find_sha1_pack(const unsigned char *sha1,
497 struct packed_git *packs);
498
499 extern void pack_report(void);
500 extern int open_pack_index(struct packed_git *);
501 extern unsigned char* use_pack(struct packed_git *, struct pack_window **, off_t, unsigned int *);
502 extern void unuse_pack(struct pack_window **);
503 extern struct packed_git *add_packed_git(const char *, int, int);
504 extern const unsigned char *nth_packed_object_sha1(struct packed_git *, uint32_t);
505 extern off_t find_pack_entry_one(const unsigned char *, struct packed_git *);
506 extern void *unpack_entry(struct packed_git *, off_t, enum object_type *, unsigned long *);
507 extern unsigned long unpack_object_header_gently(const unsigned char *buf, unsigned long len, enum object_type *type, unsigned long *sizep);
508 extern unsigned long get_size_from_delta(struct packed_git *, struct pack_window **, off_t);
509 extern const char *packed_object_info_detail(struct packed_git *, off_t, unsigned long *, unsigned long *, unsigned int *, unsigned char *);
510
511 /* Dumb servers support */
512 extern int update_server_info(int);
513
514 typedef int (*config_fn_t)(const char *, const char *);
515 extern int git_default_config(const char *, const char *);
516 extern int git_config_from_file(config_fn_t fn, const char *);
517 extern int git_config(config_fn_t fn);
518 extern int git_config_int(const char *, const char *);
519 extern int git_config_bool(const char *, const char *);
520 extern int git_config_set(const char *, const char *);
521 extern int git_config_set_multivar(const char *, const char *, const char *, int);
522 extern int git_config_rename_section(const char *, const char *);
523 extern int check_repository_format_version(const char *var, const char *value);
524
525 #define MAX_GITNAME (1000)
526 extern char git_default_email[MAX_GITNAME];
527 extern char git_default_name[MAX_GITNAME];
528
529 extern const char *git_commit_encoding;
530 extern const char *git_log_output_encoding;
531
532 extern int copy_fd(int ifd, int ofd);
533 extern int read_in_full(int fd, void *buf, size_t count);
534 extern int write_in_full(int fd, const void *buf, size_t count);
535 extern void write_or_die(int fd, const void *buf, size_t count);
536 extern int write_or_whine(int fd, const void *buf, size_t count, const char *msg);
537 extern int write_or_whine_pipe(int fd, const void *buf, size_t count, const char *msg);
538
539 /* pager.c */
540 extern void setup_pager(void);
541 extern int pager_in_use;
542 extern int pager_use_color;
543
544 /* base85 */
545 int decode_85(char *dst, const char *line, int linelen);
546 void encode_85(char *buf, const unsigned char *data, int bytes);
547
548 /* alloc.c */
549 extern void *alloc_blob_node(void);
550 extern void *alloc_tree_node(void);
551 extern void *alloc_commit_node(void);
552 extern void *alloc_tag_node(void);
553 extern void *alloc_object_node(void);
554 extern void alloc_report(void);
555
556 /* trace.c */
557 extern int nfasprintf(char **str, const char *fmt, ...);
558 extern int nfvasprintf(char **str, const char *fmt, va_list va);
559 extern void trace_printf(const char *format, ...);
560 extern void trace_argv_printf(const char **argv, int count, const char *format, ...);
561
562 /* convert.c */
563 extern char *convert_to_git(const char *path, const char *src, unsigned long *sizep);
564 extern char *convert_to_working_tree(const char *path, const char *src, unsigned long *sizep);
565 extern void *convert_sha1_file(const char *path, const unsigned char *sha1, unsigned int mode, enum object_type *type, unsigned long *size);
566
567 /* match-trees.c */
568 void shift_tree(const unsigned char *, const unsigned char *, unsigned char *, int);
569
570 #endif /* CACHE_H */