4 #include "git-compat-util.h"
11 #if defined(NO_DEFLATE_BOUND) || ZLIB_VERNUM < 0x1200
12 #define deflateBound(c,s) ((s) + (((s) + 7) >> 3) + (((s) + 63) >> 6) + 11)
15 #if defined(DT_UNKNOWN) && !defined(NO_D_TYPE_IN_DIRENT)
16 #define DTYPE(de) ((de)->d_type)
26 #define DTYPE(de) DT_UNKNOWN
29 /* unknown mode (impossible combination S_IFIFO|S_IFCHR) */
30 #define S_IFINVALID 0030000
33 * A "directory link" is a link to another git directory.
35 * The value 0160000 is not normally a valid mode, and
36 * also just happens to be S_IFDIR + S_IFLNK
38 * NOTE! We *really* shouldn't depend on the S_IFxxx macros
39 * always having the same values everywhere. We should use
40 * our internal git values for these things, and then we can
41 * translate that to the OS-specific value. It just so
42 * happens that everybody shares the same bit representation
43 * in the UNIX world (and apparently wider too..)
45 #define S_IFGITLINK 0160000
46 #define S_ISGITLINK(m) (((m) & S_IFMT) == S_IFGITLINK)
49 * Intensive research over the course of many years has shown that
50 * port 9418 is totally unused by anything else. Or
52 * Your search - "port 9418" - did not match any documents.
54 * as www.google.com puts it.
56 * This port has been properly assigned for git use by IANA:
57 * git (Assigned-9418) [I06-050728-0001].
59 * git 9418/tcp git pack transfer service
60 * git 9418/udp git pack transfer service
62 * with Linus Torvalds <torvalds@osdl.org> as the point of
63 * contact. September 2005.
65 * See http://www.iana.org/assignments/port-numbers
67 #define DEFAULT_GIT_PORT 9418
70 * Basic data structures for the directory cache
73 #define CACHE_SIGNATURE 0x44495243 /* "DIRC" */
75 unsigned int hdr_signature;
76 unsigned int hdr_version;
77 unsigned int hdr_entries;
81 * The "cache_time" is just the low 32 bits of the
82 * time. It doesn't matter if it overflows - we only
83 * check it for equality in the 32 bits we save.
91 * dev/ino/uid/gid/size are also just tracked to the low 32 bits
92 * Again - this is just a (very strong in practice) heuristic that
93 * the inode hasn't changed.
95 * We save the fields in big-endian order to allow using the
96 * index file over NFS transparently.
98 struct ondisk_cache_entry {
99 struct cache_time ctime;
100 struct cache_time mtime;
107 unsigned char sha1[20];
108 unsigned short flags;
109 char name[FLEX_ARRAY]; /* more */
113 unsigned int ce_ctime;
114 unsigned int ce_mtime;
117 unsigned int ce_mode;
120 unsigned int ce_size;
121 unsigned int ce_flags;
122 unsigned char sha1[20];
123 struct cache_entry *next;
124 char name[FLEX_ARRAY]; /* more */
127 #define CE_NAMEMASK (0x0fff)
128 #define CE_STAGEMASK (0x3000)
129 #define CE_VALID (0x8000)
130 #define CE_STAGESHIFT 12
133 #define CE_UPDATE (0x10000)
134 #define CE_REMOVE (0x20000)
135 #define CE_UPTODATE (0x40000)
136 #define CE_ADDED (0x80000)
138 #define CE_HASHED (0x100000)
139 #define CE_UNHASHED (0x200000)
142 * Copy the sha1 and stat state of a cache entry from one to
143 * another. But we never change the name, or the hash state!
145 #define CE_STATE_MASK (CE_HASHED | CE_UNHASHED)
146 static inline void copy_cache_entry(struct cache_entry *dst, struct cache_entry *src)
148 unsigned int state = dst->ce_flags & CE_STATE_MASK;
150 /* Don't copy hash chain and name */
151 memcpy(dst, src, offsetof(struct cache_entry, next));
153 /* Restore the hash state */
154 dst->ce_flags = (dst->ce_flags & ~CE_STATE_MASK) | state;
157 static inline unsigned create_ce_flags(size_t len, unsigned stage)
159 if (len >= CE_NAMEMASK)
161 return (len | (stage << CE_STAGESHIFT));
164 static inline size_t ce_namelen(const struct cache_entry *ce)
166 size_t len = ce->ce_flags & CE_NAMEMASK;
167 if (len < CE_NAMEMASK)
169 return strlen(ce->name + CE_NAMEMASK) + CE_NAMEMASK;
172 #define ce_size(ce) cache_entry_size(ce_namelen(ce))
173 #define ondisk_ce_size(ce) ondisk_cache_entry_size(ce_namelen(ce))
174 #define ce_stage(ce) ((CE_STAGEMASK & (ce)->ce_flags) >> CE_STAGESHIFT)
175 #define ce_uptodate(ce) ((ce)->ce_flags & CE_UPTODATE)
176 #define ce_mark_uptodate(ce) ((ce)->ce_flags |= CE_UPTODATE)
178 #define ce_permissions(mode) (((mode) & 0100) ? 0755 : 0644)
179 static inline unsigned int create_ce_mode(unsigned int mode)
183 if (S_ISDIR(mode) || S_ISGITLINK(mode))
185 return S_IFREG | ce_permissions(mode);
187 static inline unsigned int ce_mode_from_stat(struct cache_entry *ce, unsigned int mode)
189 extern int trust_executable_bit, has_symlinks;
190 if (!has_symlinks && S_ISREG(mode) &&
191 ce && S_ISLNK(ce->ce_mode))
193 if (!trust_executable_bit && S_ISREG(mode)) {
194 if (ce && S_ISREG(ce->ce_mode))
196 return create_ce_mode(0666);
198 return create_ce_mode(mode);
200 static inline int ce_to_dtype(const struct cache_entry *ce)
202 unsigned ce_mode = ntohl(ce->ce_mode);
203 if (S_ISREG(ce_mode))
205 else if (S_ISDIR(ce_mode) || S_ISGITLINK(ce_mode))
207 else if (S_ISLNK(ce_mode))
212 #define canon_mode(mode) \
213 (S_ISREG(mode) ? (S_IFREG | ce_permissions(mode)) : \
214 S_ISLNK(mode) ? S_IFLNK : S_ISDIR(mode) ? S_IFDIR : S_IFGITLINK)
216 #define cache_entry_size(len) ((offsetof(struct cache_entry,name) + (len) + 8) & ~7)
217 #define ondisk_cache_entry_size(len) ((offsetof(struct ondisk_cache_entry,name) + (len) + 8) & ~7)
220 struct cache_entry **cache;
221 unsigned int cache_nr, cache_alloc, cache_changed;
222 struct cache_tree *cache_tree;
225 unsigned name_hash_initialized : 1;
226 struct hash_table name_hash;
229 extern struct index_state the_index;
232 extern void add_name_hash(struct index_state *istate, struct cache_entry *ce);
234 * We don't actually *remove* it, we can just mark it invalid so that
235 * we won't find it in lookups.
237 * Not only would we have to search the lists (simple enough), but
238 * we'd also have to rehash other hash buckets in case this makes the
239 * hash bucket empty (common). So it's much better to just mark
242 static inline void remove_name_hash(struct cache_entry *ce)
244 ce->ce_flags |= CE_UNHASHED;
248 #ifndef NO_THE_INDEX_COMPATIBILITY_MACROS
249 #define active_cache (the_index.cache)
250 #define active_nr (the_index.cache_nr)
251 #define active_alloc (the_index.cache_alloc)
252 #define active_cache_changed (the_index.cache_changed)
253 #define active_cache_tree (the_index.cache_tree)
255 #define read_cache() read_index(&the_index)
256 #define read_cache_from(path) read_index_from(&the_index, (path))
257 #define write_cache(newfd, cache, entries) write_index(&the_index, (newfd))
258 #define discard_cache() discard_index(&the_index)
259 #define unmerged_cache() unmerged_index(&the_index)
260 #define cache_name_pos(name, namelen) index_name_pos(&the_index,(name),(namelen))
261 #define add_cache_entry(ce, option) add_index_entry(&the_index, (ce), (option))
262 #define remove_cache_entry_at(pos) remove_index_entry_at(&the_index, (pos))
263 #define remove_file_from_cache(path) remove_file_from_index(&the_index, (path))
264 #define add_to_cache(path, st, verbose) add_to_index(&the_index, (path), (st), (verbose))
265 #define add_file_to_cache(path, verbose) add_file_to_index(&the_index, (path), (verbose))
266 #define refresh_cache(flags) refresh_index(&the_index, (flags), NULL, NULL)
267 #define ce_match_stat(ce, st, options) ie_match_stat(&the_index, (ce), (st), (options))
268 #define ce_modified(ce, st, options) ie_modified(&the_index, (ce), (st), (options))
269 #define cache_name_exists(name, namelen, igncase) index_name_exists(&the_index, (name), (namelen), (igncase))
279 /* 5 for future expansion */
286 static inline enum object_type object_type(unsigned int mode)
288 return S_ISDIR(mode) ? OBJ_TREE :
289 S_ISGITLINK(mode) ? OBJ_COMMIT :
293 #define GIT_DIR_ENVIRONMENT "GIT_DIR"
294 #define GIT_WORK_TREE_ENVIRONMENT "GIT_WORK_TREE"
295 #define DEFAULT_GIT_DIR_ENVIRONMENT ".git"
296 #define DB_ENVIRONMENT "GIT_OBJECT_DIRECTORY"
297 #define INDEX_ENVIRONMENT "GIT_INDEX_FILE"
298 #define GRAFT_ENVIRONMENT "GIT_GRAFT_FILE"
299 #define TEMPLATE_DIR_ENVIRONMENT "GIT_TEMPLATE_DIR"
300 #define CONFIG_ENVIRONMENT "GIT_CONFIG"
301 #define CONFIG_LOCAL_ENVIRONMENT "GIT_CONFIG_LOCAL"
302 #define EXEC_PATH_ENVIRONMENT "GIT_EXEC_PATH"
303 #define CEILING_DIRECTORIES_ENVIRONMENT "GIT_CEILING_DIRECTORIES"
304 #define GITATTRIBUTES_FILE ".gitattributes"
305 #define INFOATTRIBUTES_FILE "info/attributes"
306 #define ATTRIBUTE_MACRO_PREFIX "[attr]"
308 extern int is_bare_repository_cfg;
309 extern int is_bare_repository(void);
310 extern int is_inside_git_dir(void);
311 extern char *git_work_tree_cfg;
312 extern int is_inside_work_tree(void);
313 extern const char *get_git_dir(void);
314 extern char *get_object_directory(void);
315 extern char *get_refs_directory(void);
316 extern char *get_index_file(void);
317 extern char *get_graft_file(void);
318 extern int set_git_dir(const char *path);
319 extern const char *get_git_work_tree(void);
320 extern const char *read_gitfile_gently(const char *path);
322 #define ALTERNATE_DB_ENVIRONMENT "GIT_ALTERNATE_OBJECT_DIRECTORIES"
324 extern const char **get_pathspec(const char *prefix, const char **pathspec);
325 extern void setup_work_tree(void);
326 extern const char *setup_git_directory_gently(int *);
327 extern const char *setup_git_directory(void);
328 extern const char *prefix_path(const char *prefix, int len, const char *path);
329 extern const char *prefix_filename(const char *prefix, int len, const char *path);
330 extern void verify_filename(const char *prefix, const char *name);
331 extern void verify_non_filename(const char *prefix, const char *name);
333 #define alloc_nr(x) (((x)+16)*3/2)
336 * Realloc the buffer pointed at by variable 'x' so that it can hold
337 * at least 'nr' entries; the number of entries currently allocated
338 * is 'alloc', using the standard growing factor alloc_nr() macro.
340 * DO NOT USE any expression with side-effect for 'x' or 'alloc'.
342 #define ALLOC_GROW(x, nr, alloc) \
344 if ((nr) > alloc) { \
345 if (alloc_nr(alloc) < (nr)) \
348 alloc = alloc_nr(alloc); \
349 x = xrealloc((x), alloc * sizeof(*(x))); \
353 /* Initialize and use the cache information */
354 extern int read_index(struct index_state *);
355 extern int read_index_from(struct index_state *, const char *path);
356 extern int write_index(const struct index_state *, int newfd);
357 extern int discard_index(struct index_state *);
358 extern int unmerged_index(const struct index_state *);
359 extern int verify_path(const char *path);
360 extern struct cache_entry *index_name_exists(struct index_state *istate, const char *name, int namelen, int igncase);
361 extern int index_name_pos(const struct index_state *, const char *name, int namelen);
362 #define ADD_CACHE_OK_TO_ADD 1 /* Ok to add */
363 #define ADD_CACHE_OK_TO_REPLACE 2 /* Ok to replace file/directory */
364 #define ADD_CACHE_SKIP_DFCHECK 4 /* Ok to skip DF conflict checks */
365 #define ADD_CACHE_JUST_APPEND 8 /* Append only; tree.c::read_tree() */
366 extern int add_index_entry(struct index_state *, struct cache_entry *ce, int option);
367 extern struct cache_entry *refresh_cache_entry(struct cache_entry *ce, int really);
368 extern int remove_index_entry_at(struct index_state *, int pos);
369 extern int remove_file_from_index(struct index_state *, const char *path);
370 extern int add_to_index(struct index_state *, const char *path, struct stat *, int verbose);
371 extern int add_file_to_index(struct index_state *, const char *path, int verbose);
372 extern struct cache_entry *make_cache_entry(unsigned int mode, const unsigned char *sha1, const char *path, int stage, int refresh);
373 extern int ce_same_name(struct cache_entry *a, struct cache_entry *b);
375 /* do stat comparison even if CE_VALID is true */
376 #define CE_MATCH_IGNORE_VALID 01
377 /* do not check the contents but report dirty on racily-clean entries */
378 #define CE_MATCH_RACY_IS_DIRTY 02
379 extern int ie_match_stat(const struct index_state *, struct cache_entry *, struct stat *, unsigned int);
380 extern int ie_modified(const struct index_state *, struct cache_entry *, struct stat *, unsigned int);
382 extern int ce_path_match(const struct cache_entry *ce, const char **pathspec);
383 extern int index_fd(unsigned char *sha1, int fd, struct stat *st, int write_object, enum object_type type, const char *path);
384 extern int index_pipe(unsigned char *sha1, int fd, const char *type, int write_object);
385 extern int index_path(unsigned char *sha1, const char *path, struct stat *st, int write_object);
386 extern void fill_stat_cache_info(struct cache_entry *ce, struct stat *st);
388 #define REFRESH_REALLY 0x0001 /* ignore_valid */
389 #define REFRESH_UNMERGED 0x0002 /* allow unmerged */
390 #define REFRESH_QUIET 0x0004 /* be quiet about it */
391 #define REFRESH_IGNORE_MISSING 0x0008 /* ignore non-existent */
392 extern int refresh_index(struct index_state *, unsigned int flags, const char **pathspec, char *seen);
395 struct lock_file *next;
399 char filename[PATH_MAX];
401 extern int hold_lock_file_for_update(struct lock_file *, const char *path, int);
402 extern int commit_lock_file(struct lock_file *);
404 extern int hold_locked_index(struct lock_file *, int);
405 extern int commit_locked_index(struct lock_file *);
406 extern void set_alternate_index_output(const char *);
407 extern int close_lock_file(struct lock_file *);
408 extern void rollback_lock_file(struct lock_file *);
409 extern int delete_ref(const char *, const unsigned char *sha1);
411 /* Environment bits from configuration mechanism */
412 extern int trust_executable_bit;
413 extern int quote_path_fully;
414 extern int has_symlinks;
415 extern int ignore_case;
416 extern int assume_unchanged;
417 extern int prefer_symlink_refs;
418 extern int log_all_ref_updates;
419 extern int warn_ambiguous_refs;
420 extern int shared_repository;
421 extern const char *apply_default_whitespace;
422 extern int zlib_compression_level;
423 extern int core_compression_level;
424 extern int core_compression_seen;
425 extern size_t packed_git_window_size;
426 extern size_t packed_git_limit;
427 extern size_t delta_base_cache_limit;
428 extern int auto_crlf;
436 extern enum safe_crlf safe_crlf;
439 BRANCH_TRACK_NEVER = 0,
442 BRANCH_TRACK_EXPLICIT,
445 enum rebase_setup_type {
446 AUTOREBASE_NEVER = 0,
452 extern enum branch_track git_branch_track;
453 extern enum rebase_setup_type autorebase;
455 #define GIT_REPO_VERSION 0
456 extern int repository_format_version;
457 extern int check_repository_format(void);
459 #define MTIME_CHANGED 0x0001
460 #define CTIME_CHANGED 0x0002
461 #define OWNER_CHANGED 0x0004
462 #define MODE_CHANGED 0x0008
463 #define INODE_CHANGED 0x0010
464 #define DATA_CHANGED 0x0020
465 #define TYPE_CHANGED 0x0040
467 /* Return a statically allocated filename matching the sha1 signature */
468 extern char *mkpath(const char *fmt, ...) __attribute__((format (printf, 1, 2)));
469 extern char *git_path(const char *fmt, ...) __attribute__((format (printf, 1, 2)));
470 extern char *sha1_file_name(const unsigned char *sha1);
471 extern char *sha1_pack_name(const unsigned char *sha1);
472 extern char *sha1_pack_index_name(const unsigned char *sha1);
473 extern const char *find_unique_abbrev(const unsigned char *sha1, int);
474 extern const unsigned char null_sha1[20];
475 static inline int is_null_sha1(const unsigned char *sha1)
477 return !memcmp(sha1, null_sha1, 20);
479 static inline int hashcmp(const unsigned char *sha1, const unsigned char *sha2)
481 return memcmp(sha1, sha2, 20);
483 static inline void hashcpy(unsigned char *sha_dst, const unsigned char *sha_src)
485 memcpy(sha_dst, sha_src, 20);
487 static inline void hashclr(unsigned char *hash)
492 int git_mkstemp(char *path, size_t n, const char *template);
497 * PERM_UMASK, OLD_PERM_GROUP and OLD_PERM_EVERYBODY enumerations must
498 * not be changed. Old repositories have core.sharedrepository written in
499 * numeric format, and therefore these values are preserved for compatibility
505 OLD_PERM_EVERYBODY = 2,
507 PERM_EVERYBODY = 0664,
509 int git_config_perm(const char *var, const char *value);
510 int adjust_shared_perm(const char *path);
511 int safe_create_leading_directories(char *path);
512 char *enter_repo(char *path, int strict);
513 static inline int is_absolute_path(const char *path)
515 return path[0] == '/';
517 const char *make_absolute_path(const char *path);
518 int normalize_absolute_path(char *buf, const char *path);
519 int longest_ancestor_length(const char *path, const char *prefix_list);
521 /* Read and unpack a sha1 file into memory, write memory to a sha1 file */
522 extern int sha1_object_info(const unsigned char *, unsigned long *);
523 extern void * read_sha1_file(const unsigned char *sha1, enum object_type *type, unsigned long *size);
524 extern int hash_sha1_file(const void *buf, unsigned long len, const char *type, unsigned char *sha1);
525 extern int write_sha1_file(void *buf, unsigned long len, const char *type, unsigned char *return_sha1);
526 extern int pretend_sha1_file(void *, unsigned long, enum object_type, unsigned char *);
528 extern int check_sha1_signature(const unsigned char *sha1, void *buf, unsigned long size, const char *type);
530 extern int write_sha1_from_fd(const unsigned char *sha1, int fd, char *buffer,
531 size_t bufsize, size_t *bufposn);
532 extern int write_sha1_to_fd(int fd, const unsigned char *sha1);
533 extern int move_temp_to_file(const char *tmpfile, const char *filename);
535 extern int has_sha1_pack(const unsigned char *sha1, const char **ignore);
536 extern int has_sha1_file(const unsigned char *sha1);
538 extern int has_pack_file(const unsigned char *sha1);
539 extern int has_pack_index(const unsigned char *sha1);
541 extern const signed char hexval_table[256];
542 static inline unsigned int hexval(unsigned char c)
544 return hexval_table[c];
547 /* Convert to/from hex/sha1 representation */
548 #define MINIMUM_ABBREV 4
549 #define DEFAULT_ABBREV 7
551 extern int get_sha1(const char *str, unsigned char *sha1);
552 extern int get_sha1_with_mode(const char *str, unsigned char *sha1, unsigned *mode);
553 extern int get_sha1_hex(const char *hex, unsigned char *sha1);
554 extern char *sha1_to_hex(const unsigned char *sha1); /* static buffer result! */
555 extern int read_ref(const char *filename, unsigned char *sha1);
556 extern const char *resolve_ref(const char *path, unsigned char *sha1, int, int *);
557 extern int dwim_ref(const char *str, int len, unsigned char *sha1, char **ref);
558 extern int dwim_log(const char *str, int len, unsigned char *sha1, char **ref);
560 extern int refname_match(const char *abbrev_name, const char *full_name, const char **rules);
561 extern const char *ref_rev_parse_rules[];
562 extern const char *ref_fetch_rules[];
564 extern int create_symref(const char *ref, const char *refs_heads_master, const char *logmsg);
565 extern int validate_headref(const char *ref);
567 extern int base_name_compare(const char *name1, int len1, int mode1, const char *name2, int len2, int mode2);
568 extern int df_name_compare(const char *name1, int len1, int mode1, const char *name2, int len2, int mode2);
569 extern int cache_name_compare(const char *name1, int len1, const char *name2, int len2);
571 extern void *read_object_with_reference(const unsigned char *sha1,
572 const char *required_type,
574 unsigned char *sha1_ret);
576 extern struct object *peel_to_type(const char *name, int namelen,
577 struct object *o, enum object_type);
588 const char *show_date(unsigned long time, int timezone, enum date_mode mode);
589 int parse_date(const char *date, char *buf, int bufsize);
590 void datestamp(char *buf, int bufsize);
591 unsigned long approxidate(const char *);
592 enum date_mode parse_date_format(const char *format);
594 #define IDENT_WARN_ON_NO_NAME 1
595 #define IDENT_ERROR_ON_NO_NAME 2
596 #define IDENT_NO_DATE 4
597 extern const char *git_author_info(int);
598 extern const char *git_committer_info(int);
599 extern const char *fmt_ident(const char *name, const char *email, const char *date_str, int);
600 extern const char *fmt_name(const char *name, const char *email);
603 const char *base_dir;
611 extern int checkout_entry(struct cache_entry *ce, const struct checkout *state, char *topath);
612 extern int has_symlink_leading_path(int len, const char *name);
614 extern struct alternate_object_database {
615 struct alternate_object_database *next;
617 char base[FLEX_ARRAY]; /* more */
619 extern void prepare_alt_odb(void);
622 struct pack_window *next;
626 unsigned int last_used;
627 unsigned int inuse_cnt;
630 extern struct packed_git {
631 struct packed_git *next;
632 struct pack_window *windows;
634 const void *index_data;
636 uint32_t num_objects;
641 unsigned char sha1[20];
642 /* something like ".git/objects/pack/xxxxx.pack" */
643 char pack_name[FLEX_ARRAY]; /* more */
648 unsigned char sha1[20];
649 struct packed_git *p;
654 unsigned char old_sha1[20];
655 unsigned char new_sha1[20];
657 unsigned int force:1,
664 REF_STATUS_REJECT_NONFASTFORWARD,
665 REF_STATUS_REJECT_NODELETE,
667 REF_STATUS_REMOTE_REJECT,
668 REF_STATUS_EXPECTING_REPORT,
671 struct ref *peer_ref; /* when renaming */
672 char name[FLEX_ARRAY]; /* more */
675 #define REF_NORMAL (1u << 0)
676 #define REF_HEADS (1u << 1)
677 #define REF_TAGS (1u << 2)
679 extern struct ref *find_ref_by_name(struct ref *list, const char *name);
681 #define CONNECT_VERBOSE (1u << 0)
682 extern struct child_process *git_connect(int fd[2], const char *url, const char *prog, int flags);
683 extern int finish_connect(struct child_process *conn);
684 extern int path_match(const char *path, int nr, char **match);
685 extern int get_ack(int fd, unsigned char *result_sha1);
686 extern struct ref **get_remote_heads(int in, struct ref **list, int nr_match, char **match, unsigned int flags);
687 extern int server_supports(const char *feature);
689 extern struct packed_git *parse_pack_index(unsigned char *sha1);
690 extern struct packed_git *parse_pack_index_file(const unsigned char *sha1,
691 const char *idx_path);
693 extern void prepare_packed_git(void);
694 extern void reprepare_packed_git(void);
695 extern void install_packed_git(struct packed_git *pack);
697 extern struct packed_git *find_sha1_pack(const unsigned char *sha1,
698 struct packed_git *packs);
700 extern void pack_report(void);
701 extern int open_pack_index(struct packed_git *);
702 extern unsigned char* use_pack(struct packed_git *, struct pack_window **, off_t, unsigned int *);
703 extern void close_pack_windows(struct packed_git *);
704 extern void unuse_pack(struct pack_window **);
705 extern struct packed_git *add_packed_git(const char *, int, int);
706 extern const unsigned char *nth_packed_object_sha1(struct packed_git *, uint32_t);
707 extern off_t find_pack_entry_one(const unsigned char *, struct packed_git *);
708 extern void *unpack_entry(struct packed_git *, off_t, enum object_type *, unsigned long *);
709 extern unsigned long unpack_object_header_gently(const unsigned char *buf, unsigned long len, enum object_type *type, unsigned long *sizep);
710 extern unsigned long get_size_from_delta(struct packed_git *, struct pack_window **, off_t);
711 extern const char *packed_object_info_detail(struct packed_git *, off_t, unsigned long *, unsigned long *, unsigned int *, unsigned char *);
712 extern int matches_pack_name(struct packed_git *p, const char *name);
714 /* Dumb servers support */
715 extern int update_server_info(int);
717 typedef int (*config_fn_t)(const char *, const char *);
718 extern int git_default_config(const char *, const char *);
719 extern int git_config_from_file(config_fn_t fn, const char *);
720 extern int git_config(config_fn_t fn);
721 extern int git_parse_long(const char *, long *);
722 extern int git_parse_ulong(const char *, unsigned long *);
723 extern int git_config_int(const char *, const char *);
724 extern unsigned long git_config_ulong(const char *, const char *);
725 extern int git_config_bool_or_int(const char *, const char *, int *);
726 extern int git_config_bool(const char *, const char *);
727 extern int git_config_string(const char **, const char *, const char *);
728 extern int git_config_set(const char *, const char *);
729 extern int git_config_set_multivar(const char *, const char *, const char *, int);
730 extern int git_config_rename_section(const char *, const char *);
731 extern const char *git_etc_gitconfig(void);
732 extern int check_repository_format_version(const char *var, const char *value);
733 extern int git_env_bool(const char *, int);
734 extern int git_config_system(void);
735 extern int git_config_global(void);
736 extern int config_error_nonbool(const char *);
738 #define MAX_GITNAME (1000)
739 extern char git_default_email[MAX_GITNAME];
740 extern char git_default_name[MAX_GITNAME];
741 extern int user_ident_explicitly_given;
743 extern const char *git_commit_encoding;
744 extern const char *git_log_output_encoding;
746 /* IO helper functions */
747 extern void maybe_flush_or_die(FILE *, const char *);
748 extern int copy_fd(int ifd, int ofd);
749 extern int copy_file(const char *dst, const char *src, int mode);
750 extern ssize_t read_in_full(int fd, void *buf, size_t count);
751 extern ssize_t write_in_full(int fd, const void *buf, size_t count);
752 extern void write_or_die(int fd, const void *buf, size_t count);
753 extern int write_or_whine(int fd, const void *buf, size_t count, const char *msg);
754 extern int write_or_whine_pipe(int fd, const void *buf, size_t count, const char *msg);
757 extern void setup_pager(void);
758 extern const char *pager_program;
759 extern int pager_in_use(void);
760 extern int pager_use_color;
762 extern const char *editor_program;
763 extern const char *excludes_file;
766 int decode_85(char *dst, const char *line, int linelen);
767 void encode_85(char *buf, const unsigned char *data, int bytes);
770 extern void *alloc_blob_node(void);
771 extern void *alloc_tree_node(void);
772 extern void *alloc_commit_node(void);
773 extern void *alloc_tag_node(void);
774 extern void *alloc_object_node(void);
775 extern void alloc_report(void);
778 extern void trace_printf(const char *format, ...);
779 extern void trace_argv_printf(const char **argv, const char *format, ...);
782 /* returns 1 if *dst was used */
783 extern int convert_to_git(const char *path, const char *src, size_t len,
784 struct strbuf *dst, enum safe_crlf checksafe);
785 extern int convert_to_working_tree(const char *path, const char *src, size_t len, struct strbuf *dst);
788 void add_files_to_cache(int verbose, const char *prefix, const char **pathspec);
791 extern int diff_auto_refresh_index;
794 void shift_tree(const unsigned char *, const unsigned char *, unsigned char *, int);
798 * used by both diff and apply
800 #define WS_TRAILING_SPACE 01
801 #define WS_SPACE_BEFORE_TAB 02
802 #define WS_INDENT_WITH_NON_TAB 04
803 #define WS_CR_AT_EOL 010
804 #define WS_DEFAULT_RULE (WS_TRAILING_SPACE|WS_SPACE_BEFORE_TAB)
805 extern unsigned whitespace_rule_cfg;
806 extern unsigned whitespace_rule(const char *);
807 extern unsigned parse_whitespace_rule(const char *);
808 extern unsigned check_and_emit_line(const char *line, int len, unsigned ws_rule,
809 FILE *stream, const char *set,
810 const char *reset, const char *ws);
811 extern char *whitespace_error_string(unsigned ws);
812 extern int ws_fix_copy(char *, const char *, int, unsigned, int *);
815 int pathspec_match(const char **spec, char *matched, const char *filename, int skiplen);
816 int report_path_error(const char *ps_matched, const char **pathspec, int prefix_offset);
817 void overlay_tree_on_cache(const char *tree_name, const char *prefix);
819 char *alias_lookup(const char *alias);