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 /*
  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
  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.
  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
  61  */
  62 #define DEFAULT_GIT_PORT 9418
  63
  64 /*
  65  * Basic data structures for the directory cache
  66  */
  67
  68 #define CACHE_SIGNATURE 0x44495243      /* "DIRC" */
  69 struct cache_header {
  70         unsigned int hdr_signature;
  71         unsigned int hdr_version;
  72         unsigned int hdr_entries;
  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  */
  80 struct 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.
  89  *
  90  * We save the fields in big-endian order to allow using the
  91  * index file over NFS transparently.
  92  */
  93 struct cache_entry {
  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;
 102         unsigned char sha1[20];
 103         unsigned short ce_flags;
 104         char name[FLEX_ARRAY]; /* more */
 105 };
 106
 107 #define CE_NAMEMASK  (0x0fff)
 108 #define CE_STAGEMASK (0x3000)
 109 #define CE_UPDATE    (0x4000)
 110 #define CE_VALID     (0x8000)
 111 #define CE_STAGESHIFT 12
 112
 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
 118 #define ce_permissions(mode) (((mode) & 0100) ? 0755 : 0644)
 119 static inline unsigned int create_ce_mode(unsigned int mode)
 120 {
 121         if (S_ISLNK(mode))
 122                 return htonl(S_IFLNK);
 123         if (S_ISDIR(mode) || S_ISDIRLNK(mode))
 124                 return htonl(S_IFDIRLNK);
 125         return htonl(S_IFREG | ce_permissions(mode));
 126 }
 127 static inline unsigned int ce_mode_from_stat(struct cache_entry *ce, unsigned int mode)
 128 {
 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;
 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 }
 140 #define canon_mode(mode) \
 141         (S_ISREG(mode) ? (S_IFREG | ce_permissions(mode)) : \
 142         S_ISLNK(mode) ? S_IFLNK : S_ISDIR(mode) ? S_IFDIR : S_IFDIRLNK)
 143
 144 #define cache_entry_size(len) ((offsetof(struct cache_entry,name) + (len) + 8) & ~7)
 145
 146 struct 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
 155 extern struct index_state the_index;
 156
 157 #ifndef NO_THE_INDEX_COMPATIBILITY_MACROS
 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)
 163
 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
 178 enum 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
 191 #define GIT_DIR_ENVIRONMENT "GIT_DIR"
 192 #define DEFAULT_GIT_DIR_ENVIRONMENT ".git"
 193 #define DB_ENVIRONMENT "GIT_OBJECT_DIRECTORY"
 194 #define INDEX_ENVIRONMENT "GIT_INDEX_FILE"
 195 #define GRAFT_ENVIRONMENT "GIT_GRAFT_FILE"
 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"
 200 #define GITATTRIBUTES_FILE ".gitattributes"
 201 #define INFOATTRIBUTES_FILE "info/attributes"
 202 #define ATTRIBUTE_MACRO_PREFIX "[attr]"
 203
 204 extern int is_bare_repository_cfg;
 205 extern int is_bare_repository(void);
 206 extern int is_inside_git_dir(void);
 207 extern const char *get_git_dir(void);
 208 extern char *get_object_directory(void);
 209 extern char *get_refs_directory(void);
 210 extern char *get_index_file(void);
 211 extern char *get_graft_file(void);
 212
 213 #define ALTERNATE_DB_ENVIRONMENT "GIT_ALTERNATE_OBJECT_DIRECTORIES"
 214
 215 extern const char **get_pathspec(const char *prefix, const char **pathspec);
 216 extern const char *setup_git_directory_gently(int *);
 217 extern const char *setup_git_directory(void);
 218 extern const char *prefix_path(const char *prefix, int len, const char *path);
 219 extern const char *prefix_filename(const char *prefix, int len, const char *path);
 220 extern void verify_filename(const char *prefix, const char *name);
 221 extern void verify_non_filename(const char *prefix, const char *name);
 222
 223 #define alloc_nr(x) (((x)+16)*3/2)
 224
 225 /* Initialize and use the cache information */
 226 extern int read_index(struct index_state *);
 227 extern int read_index_from(struct index_state *, const char *path);
 228 extern int write_index(struct index_state *, int newfd);
 229 extern int discard_index(struct index_state *);
 230 extern int verify_path(const char *path);
 231 extern int index_name_pos(struct index_state *, const char *name, int namelen);
 232 #define ADD_CACHE_OK_TO_ADD 1           /* Ok to add */
 233 #define ADD_CACHE_OK_TO_REPLACE 2       /* Ok to replace file/directory */
 234 #define ADD_CACHE_SKIP_DFCHECK 4        /* Ok to skip DF conflict checks */
 235 extern int add_index_entry(struct index_state *, struct cache_entry *ce, int option);
 236 extern struct cache_entry *refresh_cache_entry(struct cache_entry *ce, int really);
 237 extern int remove_index_entry_at(struct index_state *, int pos);
 238 extern int remove_file_from_index(struct index_state *, const char *path);
 239 extern int add_file_to_index(struct index_state *, const char *path, int verbose);
 240 extern int ce_same_name(struct cache_entry *a, struct cache_entry *b);
 241 extern int ie_match_stat(struct index_state *, struct cache_entry *, struct stat *, int);
 242 extern int ie_modified(struct index_state *, struct cache_entry *, struct stat *, int);
 243 extern int ce_path_match(const struct cache_entry *ce, const char **pathspec);
 244 extern int index_fd(unsigned char *sha1, int fd, struct stat *st, int write_object, enum object_type type, const char *path);
 245 extern int read_pipe(int fd, char** return_buf, unsigned long* return_size);
 246 extern int index_pipe(unsigned char *sha1, int fd, const char *type, int write_object);
 247 extern int index_path(unsigned char *sha1, const char *path, struct stat *st, int write_object);
 248 extern void fill_stat_cache_info(struct cache_entry *ce, struct stat *st);
 249
 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 */
 254 extern int refresh_index(struct index_state *, unsigned int flags);
 255
 256 struct lock_file {
 257         struct lock_file *next;
 258         pid_t owner;
 259         char on_list;
 260         char filename[PATH_MAX];
 261 };
 262 extern int hold_lock_file_for_update(struct lock_file *, const char *path, int);
 263 extern int commit_lock_file(struct lock_file *);
 264
 265 extern int hold_locked_index(struct lock_file *, int);
 266 extern int commit_locked_index(struct lock_file *);
 267 extern void set_alternate_index_output(const char *);
 268
 269 extern void rollback_lock_file(struct lock_file *);
 270 extern int delete_ref(const char *, const unsigned char *sha1);
 271
 272 /* Environment bits from configuration mechanism */
 273 extern int use_legacy_headers;
 274 extern int trust_executable_bit;
 275 extern int has_symlinks;
 276 extern int assume_unchanged;
 277 extern int prefer_symlink_refs;
 278 extern int log_all_ref_updates;
 279 extern int warn_ambiguous_refs;
 280 extern int shared_repository;
 281 extern const char *apply_default_whitespace;
 282 extern int zlib_compression_level;
 283 extern size_t packed_git_window_size;
 284 extern size_t packed_git_limit;
 285 extern size_t delta_base_cache_limit;
 286 extern int auto_crlf;
 287
 288 #define GIT_REPO_VERSION 0
 289 extern int repository_format_version;
 290 extern int check_repository_format(void);
 291
 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
 298 #define TYPE_CHANGED    0x0040
 299
 300 /* Return a statically allocated filename matching the sha1 signature */
 301 extern char *mkpath(const char *fmt, ...) __attribute__((format (printf, 1, 2)));
 302 extern char *git_path(const char *fmt, ...) __attribute__((format (printf, 1, 2)));
 303 extern char *sha1_file_name(const unsigned char *sha1);
 304 extern char *sha1_pack_name(const unsigned char *sha1);
 305 extern char *sha1_pack_index_name(const unsigned char *sha1);
 306 extern const char *find_unique_abbrev(const unsigned char *sha1, int);
 307 extern const unsigned char null_sha1[20];
 308 static inline int is_null_sha1(const unsigned char *sha1)
 309 {
 310         return !memcmp(sha1, null_sha1, 20);
 311 }
 312 static inline int hashcmp(const unsigned char *sha1, const unsigned char *sha2)
 313 {
 314         return memcmp(sha1, sha2, 20);
 315 }
 316 static inline void hashcpy(unsigned char *sha_dst, const unsigned char *sha_src)
 317 {
 318         memcpy(sha_dst, sha_src, 20);
 319 }
 320 static inline void hashclr(unsigned char *hash)
 321 {
 322         memset(hash, 0, 20);
 323 }
 324
 325 int git_mkstemp(char *path, size_t n, const char *template);
 326
 327 enum sharedrepo {
 328         PERM_UMASK = 0,
 329         PERM_GROUP,
 330         PERM_EVERYBODY
 331 };
 332 int git_config_perm(const char *var, const char *value);
 333 int adjust_shared_perm(const char *path);
 334 int safe_create_leading_directories(char *path);
 335 char *enter_repo(char *path, int strict);
 336
 337 /* Read and unpack a sha1 file into memory, write memory to a sha1 file */
 338 extern int sha1_object_info(const unsigned char *, unsigned long *);
 339 extern void * read_sha1_file(const unsigned char *sha1, enum object_type *type, unsigned long *size);
 340 extern int hash_sha1_file(const void *buf, unsigned long len, const char *type, unsigned char *sha1);
 341 extern int write_sha1_file(void *buf, unsigned long len, const char *type, unsigned char *return_sha1);
 342 extern int pretend_sha1_file(void *, unsigned long, enum object_type, unsigned char *);
 343
 344 extern int check_sha1_signature(const unsigned char *sha1, void *buf, unsigned long size, const char *type);
 345
 346 extern int write_sha1_from_fd(const unsigned char *sha1, int fd, char *buffer,
 347                               size_t bufsize, size_t *bufposn);
 348 extern int write_sha1_to_fd(int fd, const unsigned char *sha1);
 349 extern int move_temp_to_file(const char *tmpfile, const char *filename);
 350
 351 extern int has_sha1_pack(const unsigned char *sha1, const char **ignore);
 352 extern int has_sha1_file(const unsigned char *sha1);
 353 extern void *map_sha1_file(const unsigned char *sha1, unsigned long *);
 354 extern int legacy_loose_object(unsigned char *);
 355
 356 extern int has_pack_file(const unsigned char *sha1);
 357 extern int has_pack_index(const unsigned char *sha1);
 358
 359 extern signed char hexval_table[256];
 360 static inline unsigned int hexval(unsigned int c)
 361 {
 362         return hexval_table[c];
 363 }
 364
 365 /* Convert to/from hex/sha1 representation */
 366 #define MINIMUM_ABBREV 4
 367 #define DEFAULT_ABBREV 7
 368
 369 extern int get_sha1(const char *str, unsigned char *sha1);
 370 extern int get_sha1_hex(const char *hex, unsigned char *sha1);
 371 extern char *sha1_to_hex(const unsigned char *sha1);    /* static buffer result! */
 372 extern int read_ref(const char *filename, unsigned char *sha1);
 373 extern const char *resolve_ref(const char *path, unsigned char *sha1, int, int *);
 374 extern int dwim_ref(const char *str, int len, unsigned char *sha1, char **ref);
 375 extern int dwim_log(const char *str, int len, unsigned char *sha1, char **ref);
 376
 377 extern int create_symref(const char *ref, const char *refs_heads_master, const char *logmsg);
 378 extern int validate_headref(const char *ref);
 379
 380 extern int base_name_compare(const char *name1, int len1, int mode1, const char *name2, int len2, int mode2);
 381 extern int cache_name_compare(const char *name1, int len1, const char *name2, int len2);
 382
 383 extern void *read_object_with_reference(const unsigned char *sha1,
 384                                         const char *required_type,
 385                                         unsigned long *size,
 386                                         unsigned char *sha1_ret);
 387
 388 enum date_mode { DATE_NORMAL = 0, DATE_RELATIVE, DATE_SHORT };
 389 const char *show_date(unsigned long time, int timezone, enum date_mode mode);
 390 const char *show_rfc2822_date(unsigned long time, int timezone);
 391 int parse_date(const char *date, char *buf, int bufsize);
 392 void datestamp(char *buf, int bufsize);
 393 unsigned long approxidate(const char *);
 394
 395 extern const char *git_author_info(int);
 396 extern const char *git_committer_info(int);
 397 extern const char *fmt_ident(const char *name, const char *email, const char *date_str, int);
 398
 399 struct 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
 408 extern int checkout_entry(struct cache_entry *ce, struct checkout *state, char *topath);
 409
 410 extern struct alternate_object_database {
 411         struct alternate_object_database *next;
 412         char *name;
 413         char base[FLEX_ARRAY]; /* more */
 414 } *alt_odb_list;
 415 extern void prepare_alt_odb(void);
 416
 417 struct 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
 426 extern struct packed_git {
 427         struct packed_git *next;
 428         struct pack_window *windows;
 429         off_t pack_size;
 430         const void *index_data;
 431         size_t index_size;
 432         uint32_t num_objects;
 433         int index_version;
 434         time_t mtime;
 435         int pack_fd;
 436         int pack_local;
 437         unsigned char sha1[20];
 438         /* something like ".git/objects/pack/xxxxx.pack" */
 439         char pack_name[FLEX_ARRAY]; /* more */
 440 } *packed_git;
 441
 442 struct pack_entry {
 443         off_t offset;
 444         unsigned char sha1[20];
 445         struct packed_git *p;
 446 };
 447
 448 struct ref {
 449         struct ref *next;
 450         unsigned char old_sha1[20];
 451         unsigned char new_sha1[20];
 452         unsigned char force;
 453         struct ref *peer_ref; /* when renaming */
 454         char name[FLEX_ARRAY]; /* more */
 455 };
 456
 457 #define REF_NORMAL      (1u << 0)
 458 #define REF_HEADS       (1u << 1)
 459 #define REF_TAGS        (1u << 2)
 460
 461 extern pid_t git_connect(int fd[2], char *url, const char *prog);
 462 extern int finish_connect(pid_t pid);
 463 extern int path_match(const char *path, int nr, char **match);
 464 extern int match_refs(struct ref *src, struct ref *dst, struct ref ***dst_tail,
 465                       int nr_refspec, char **refspec, int all);
 466 extern int get_ack(int fd, unsigned char *result_sha1);
 467 extern struct ref **get_remote_heads(int in, struct ref **list, int nr_match, char **match, unsigned int flags);
 468 extern int server_supports(const char *feature);
 469
 470 extern struct packed_git *parse_pack_index(unsigned char *sha1);
 471 extern struct packed_git *parse_pack_index_file(const unsigned char *sha1,
 472                                                 const char *idx_path);
 473
 474 extern void prepare_packed_git(void);
 475 extern void reprepare_packed_git(void);
 476 extern void install_packed_git(struct packed_git *pack);
 477
 478 extern struct packed_git *find_sha1_pack(const unsigned char *sha1,
 479                                          struct packed_git *packs);
 480
 481 extern void pack_report(void);
 482 extern unsigned char* use_pack(struct packed_git *, struct pack_window **, off_t, unsigned int *);
 483 extern void unuse_pack(struct pack_window **);
 484 extern struct packed_git *add_packed_git(const char *, int, int);
 485 extern const unsigned char *nth_packed_object_sha1(const struct packed_git *, uint32_t);
 486 extern off_t find_pack_entry_one(const unsigned char *, struct packed_git *);
 487 extern void *unpack_entry(struct packed_git *, off_t, enum object_type *, unsigned long *);
 488 extern unsigned long unpack_object_header_gently(const unsigned char *buf, unsigned long len, enum object_type *type, unsigned long *sizep);
 489 extern unsigned long get_size_from_delta(struct packed_git *, struct pack_window **, off_t);
 490 extern const char *packed_object_info_detail(struct packed_git *, off_t, unsigned long *, unsigned long *, unsigned int *, unsigned char *);
 491
 492 /* Dumb servers support */
 493 extern int update_server_info(int);
 494
 495 typedef int (*config_fn_t)(const char *, const char *);
 496 extern int git_default_config(const char *, const char *);
 497 extern int git_config_from_file(config_fn_t fn, const char *);
 498 extern int git_config(config_fn_t fn);
 499 extern int git_config_int(const char *, const char *);
 500 extern int git_config_bool(const char *, const char *);
 501 extern int git_config_set(const char *, const char *);
 502 extern int git_config_set_multivar(const char *, const char *, const char *, int);
 503 extern int git_config_rename_section(const char *, const char *);
 504 extern int check_repository_format_version(const char *var, const char *value);
 505
 506 #define MAX_GITNAME (1000)
 507 extern char git_default_email[MAX_GITNAME];
 508 extern char git_default_name[MAX_GITNAME];
 509
 510 extern const char *git_commit_encoding;
 511 extern const char *git_log_output_encoding;
 512
 513 extern int copy_fd(int ifd, int ofd);
 514 extern int read_in_full(int fd, void *buf, size_t count);
 515 extern int write_in_full(int fd, const void *buf, size_t count);
 516 extern void write_or_die(int fd, const void *buf, size_t count);
 517 extern int write_or_whine(int fd, const void *buf, size_t count, const char *msg);
 518 extern int write_or_whine_pipe(int fd, const void *buf, size_t count, const char *msg);
 519
 520 /* pager.c */
 521 extern void setup_pager(void);
 522 extern int pager_in_use;
 523 extern int pager_use_color;
 524
 525 /* base85 */
 526 int decode_85(char *dst, const char *line, int linelen);
 527 void encode_85(char *buf, const unsigned char *data, int bytes);
 528
 529 /* alloc.c */
 530 extern void *alloc_blob_node(void);
 531 extern void *alloc_tree_node(void);
 532 extern void *alloc_commit_node(void);
 533 extern void *alloc_tag_node(void);
 534 extern void *alloc_object_node(void);
 535 extern void alloc_report(void);
 536
 537 /* trace.c */
 538 extern int nfasprintf(char **str, const char *fmt, ...);
 539 extern int nfvasprintf(char **str, const char *fmt, va_list va);
 540 extern void trace_printf(const char *format, ...);
 541 extern void trace_argv_printf(const char **argv, int count, const char *format, ...);
 542
 543 /* convert.c */
 544 extern char *convert_to_git(const char *path, const char *src, unsigned long *sizep);
 545 extern char *convert_to_working_tree(const char *path, const char *src, unsigned long *sizep);
 546
 547 /* match-trees.c */
 548 void shift_tree(const unsigned char *, const unsigned char *, unsigned char *, int);
 549
 550 #endif /* CACHE_H */