]> git.ipfire.org Git - thirdparty/git.git/blame_incremental - cache.h
projects / thirdparty / git.git / blame_incremental
? search:
summary | shortlog | log | commit | commitdiff | tree
blob | blame (non-incremental) | history | HEAD
apply.c: split check_whitespace() into two
[thirdparty/git.git] / cache.h
... / ...
CommitLineData
1#ifndef CACHE_H
2#define CACHE_H
3
4#include "git-compat-util.h"
5#include "strbuf.h"
6#include "hash.h"
7
8#include SHA1_HEADER
9#include <zlib.h>
10
11#if defined(NO_DEFLATE_BOUND) || ZLIB_VERNUM < 0x1200
12#define deflateBound(c,s) ((s) + (((s) + 7) >> 3) + (((s) + 63) >> 6) + 11)
13#endif
14
15#if defined(DT_UNKNOWN) && !defined(NO_D_TYPE_IN_DIRENT)
16#define DTYPE(de) ((de)->d_type)
17#else
18#undef DT_UNKNOWN
19#undef DT_DIR
20#undef DT_REG
21#undef DT_LNK
22#define DT_UNKNOWN 0
23#define DT_DIR 1
24#define DT_REG 2
25#define DT_LNK 3
26#define DTYPE(de) DT_UNKNOWN
27#endif
28
29/* unknown mode (impossible combination S_IFIFO|S_IFCHR) */
30#define S_IFINVALID 0030000
31
32/*
33 * A "directory link" is a link to another git directory.
34 *
35 * The value 0160000 is not normally a valid mode, and
36 * also just happens to be S_IFDIR + S_IFLNK
37 *
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..)
44 */
45#define S_IFGITLINK 0160000
46#define S_ISGITLINK(m) (((m) & S_IFMT) == S_IFGITLINK)
47
48/*
49 * Intensive research over the course of many years has shown that
50 * port 9418 is totally unused by anything else. Or
51 *
52 * Your search - "port 9418" - did not match any documents.
53 *
54 * as www.google.com puts it.
55 *
56 * This port has been properly assigned for git use by IANA:
57 * git (Assigned-9418) [I06-050728-0001].
58 *
59 * git 9418/tcp git pack transfer service
60 * git 9418/udp git pack transfer service
61 *
62 * with Linus Torvalds <torvalds@osdl.org> as the point of
63 * contact. September 2005.
64 *
65 * See http://www.iana.org/assignments/port-numbers
66 */
67#define DEFAULT_GIT_PORT 9418
68
69/*
70 * Basic data structures for the directory cache
71 */
72
73#define CACHE_SIGNATURE 0x44495243 /* "DIRC" */
74struct cache_header {
75 unsigned int hdr_signature;
76 unsigned int hdr_version;
77 unsigned int hdr_entries;
78};
79
80/*
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.
84 */
85struct cache_time {
86 unsigned int sec;
87 unsigned int nsec;
88};
89
90/*
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.
94 *
95 * We save the fields in big-endian order to allow using the
96 * index file over NFS transparently.
97 */
98struct ondisk_cache_entry {
99 struct cache_time ctime;
100 struct cache_time mtime;
101 unsigned int dev;
102 unsigned int ino;
103 unsigned int mode;
104 unsigned int uid;
105 unsigned int gid;
106 unsigned int size;
107 unsigned char sha1[20];
108 unsigned short flags;
109 char name[FLEX_ARRAY]; /* more */
110};
111
112struct cache_entry {
113 unsigned int ce_ctime;
114 unsigned int ce_mtime;
115 unsigned int ce_dev;
116 unsigned int ce_ino;
117 unsigned int ce_mode;
118 unsigned int ce_uid;
119 unsigned int ce_gid;
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 */
125};
126
127#define CE_NAMEMASK (0x0fff)
128#define CE_STAGEMASK (0x3000)
129#define CE_VALID (0x8000)
130#define CE_STAGESHIFT 12
131
132/* In-memory only */
133#define CE_UPDATE (0x10000)
134#define CE_REMOVE (0x20000)
135#define CE_UPTODATE (0x40000)
136#define CE_ADDED (0x80000)
137
138#define CE_HASHED (0x100000)
139#define CE_UNHASHED (0x200000)
140
141/*
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!
144 */
145#define CE_STATE_MASK (CE_HASHED | CE_UNHASHED)
146static inline void copy_cache_entry(struct cache_entry *dst, struct cache_entry *src)
147{
148 unsigned int state = dst->ce_flags & CE_STATE_MASK;
149
150 /* Don't copy hash chain and name */
151 memcpy(dst, src, offsetof(struct cache_entry, next));
152
153 /* Restore the hash state */
154 dst->ce_flags = (dst->ce_flags & ~CE_STATE_MASK) | state;
155}
156
157static inline unsigned create_ce_flags(size_t len, unsigned stage)
158{
159 if (len >= CE_NAMEMASK)
160 len = CE_NAMEMASK;
161 return (len | (stage << CE_STAGESHIFT));
162}
163
164static inline size_t ce_namelen(const struct cache_entry *ce)
165{
166 size_t len = ce->ce_flags & CE_NAMEMASK;
167 if (len < CE_NAMEMASK)
168 return len;
169 return strlen(ce->name + CE_NAMEMASK) + CE_NAMEMASK;
170}
171
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)
177
178#define ce_permissions(mode) (((mode) & 0100) ? 0755 : 0644)
179static inline unsigned int create_ce_mode(unsigned int mode)
180{
181 if (S_ISLNK(mode))
182 return S_IFLNK;
183 if (S_ISDIR(mode) || S_ISGITLINK(mode))
184 return S_IFGITLINK;
185 return S_IFREG | ce_permissions(mode);
186}
187static inline unsigned int ce_mode_from_stat(struct cache_entry *ce, unsigned int mode)
188{
189 extern int trust_executable_bit, has_symlinks;
190 if (!has_symlinks && S_ISREG(mode) &&
191 ce && S_ISLNK(ce->ce_mode))
192 return ce->ce_mode;
193 if (!trust_executable_bit && S_ISREG(mode)) {
194 if (ce && S_ISREG(ce->ce_mode))
195 return ce->ce_mode;
196 return create_ce_mode(0666);
197 }
198 return create_ce_mode(mode);
199}
200static inline int ce_to_dtype(const struct cache_entry *ce)
201{
202 unsigned ce_mode = ntohl(ce->ce_mode);
203 if (S_ISREG(ce_mode))
204 return DT_REG;
205 else if (S_ISDIR(ce_mode) || S_ISGITLINK(ce_mode))
206 return DT_DIR;
207 else if (S_ISLNK(ce_mode))
208 return DT_LNK;
209 else
210 return DT_UNKNOWN;
211}
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)
215
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)
218
219struct index_state {
220 struct cache_entry **cache;
221 unsigned int cache_nr, cache_alloc, cache_changed;
222 struct cache_tree *cache_tree;
223 time_t timestamp;
224 void *alloc;
225 unsigned name_hash_initialized : 1,
226 initialized : 1;
227 struct hash_table name_hash;
228};
229
230extern struct index_state the_index;
231
232/* Name hashing */
233extern void add_name_hash(struct index_state *istate, struct cache_entry *ce);
234/*
235 * We don't actually *remove* it, we can just mark it invalid so that
236 * we won't find it in lookups.
237 *
238 * Not only would we have to search the lists (simple enough), but
239 * we'd also have to rehash other hash buckets in case this makes the
240 * hash bucket empty (common). So it's much better to just mark
241 * it.
242 */
243static inline void remove_name_hash(struct cache_entry *ce)
244{
245 ce->ce_flags |= CE_UNHASHED;
246}
247
248
249#ifndef NO_THE_INDEX_COMPATIBILITY_MACROS
250#define active_cache (the_index.cache)
251#define active_nr (the_index.cache_nr)
252#define active_alloc (the_index.cache_alloc)
253#define active_cache_changed (the_index.cache_changed)
254#define active_cache_tree (the_index.cache_tree)
255
256#define read_cache() read_index(&the_index)
257#define read_cache_from(path) read_index_from(&the_index, (path))
258#define is_cache_unborn() is_index_unborn(&the_index)
259#define read_cache_unmerged() read_index_unmerged(&the_index)
260#define write_cache(newfd, cache, entries) write_index(&the_index, (newfd))
261#define discard_cache() discard_index(&the_index)
262#define unmerged_cache() unmerged_index(&the_index)
263#define cache_name_pos(name, namelen) index_name_pos(&the_index,(name),(namelen))
264#define add_cache_entry(ce, option) add_index_entry(&the_index, (ce), (option))
265#define rename_cache_entry_at(pos, new_name) rename_index_entry_at(&the_index, (pos), (new_name))
266#define remove_cache_entry_at(pos) remove_index_entry_at(&the_index, (pos))
267#define remove_file_from_cache(path) remove_file_from_index(&the_index, (path))
268#define add_to_cache(path, st, flags) add_to_index(&the_index, (path), (st), (flags))
269#define add_file_to_cache(path, flags) add_file_to_index(&the_index, (path), (flags))
270#define refresh_cache(flags) refresh_index(&the_index, (flags), NULL, NULL)
271#define ce_match_stat(ce, st, options) ie_match_stat(&the_index, (ce), (st), (options))
272#define ce_modified(ce, st, options) ie_modified(&the_index, (ce), (st), (options))
273#define cache_name_exists(name, namelen, igncase) index_name_exists(&the_index, (name), (namelen), (igncase))
274#define cache_name_is_other(name, namelen) index_name_is_other(&the_index, (name), (namelen))
275#endif
276
277enum object_type {
278 OBJ_BAD = -1,
279 OBJ_NONE = 0,
280 OBJ_COMMIT = 1,
281 OBJ_TREE = 2,
282 OBJ_BLOB = 3,
283 OBJ_TAG = 4,
284 /* 5 for future expansion */
285 OBJ_OFS_DELTA = 6,
286 OBJ_REF_DELTA = 7,
287 OBJ_ANY,
288 OBJ_MAX,
289};
290
291static inline enum object_type object_type(unsigned int mode)
292{
293 return S_ISDIR(mode) ? OBJ_TREE :
294 S_ISGITLINK(mode) ? OBJ_COMMIT :
295 OBJ_BLOB;
296}
297
298#define GIT_DIR_ENVIRONMENT "GIT_DIR"
299#define GIT_WORK_TREE_ENVIRONMENT "GIT_WORK_TREE"
300#define DEFAULT_GIT_DIR_ENVIRONMENT ".git"
301#define DB_ENVIRONMENT "GIT_OBJECT_DIRECTORY"
302#define INDEX_ENVIRONMENT "GIT_INDEX_FILE"
303#define GRAFT_ENVIRONMENT "GIT_GRAFT_FILE"
304#define TEMPLATE_DIR_ENVIRONMENT "GIT_TEMPLATE_DIR"
305#define CONFIG_ENVIRONMENT "GIT_CONFIG"
306#define EXEC_PATH_ENVIRONMENT "GIT_EXEC_PATH"
307#define CEILING_DIRECTORIES_ENVIRONMENT "GIT_CEILING_DIRECTORIES"
308#define GITATTRIBUTES_FILE ".gitattributes"
309#define INFOATTRIBUTES_FILE "info/attributes"
310#define ATTRIBUTE_MACRO_PREFIX "[attr]"
311
312extern int is_bare_repository_cfg;
313extern int is_bare_repository(void);
314extern int is_inside_git_dir(void);
315extern char *git_work_tree_cfg;
316extern int is_inside_work_tree(void);
317extern const char *get_git_dir(void);
318extern char *get_object_directory(void);
319extern char *get_index_file(void);
320extern char *get_graft_file(void);
321extern int set_git_dir(const char *path);
322extern const char *get_git_work_tree(void);
323extern const char *read_gitfile_gently(const char *path);
324extern void set_git_work_tree(const char *tree);
325
326#define ALTERNATE_DB_ENVIRONMENT "GIT_ALTERNATE_OBJECT_DIRECTORIES"
327
328extern const char **get_pathspec(const char *prefix, const char **pathspec);
329extern void setup_work_tree(void);
330extern const char *setup_git_directory_gently(int *);
331extern const char *setup_git_directory(void);
332extern const char *prefix_path(const char *prefix, int len, const char *path);
333extern const char *prefix_filename(const char *prefix, int len, const char *path);
334extern void verify_filename(const char *prefix, const char *name);
335extern void verify_non_filename(const char *prefix, const char *name);
336
337#define INIT_DB_QUIET 0x0001
338
339extern int init_db(const char *template_dir, unsigned int flags);
340
341#define alloc_nr(x) (((x)+16)*3/2)
342
343/*
344 * Realloc the buffer pointed at by variable 'x' so that it can hold
345 * at least 'nr' entries; the number of entries currently allocated
346 * is 'alloc', using the standard growing factor alloc_nr() macro.
347 *
348 * DO NOT USE any expression with side-effect for 'x' or 'alloc'.
349 */
350#define ALLOC_GROW(x, nr, alloc) \
351 do { \
352 if ((nr) > alloc) { \
353 if (alloc_nr(alloc) < (nr)) \
354 alloc = (nr); \
355 else \
356 alloc = alloc_nr(alloc); \
357 x = xrealloc((x), alloc * sizeof(*(x))); \
358 } \
359 } while(0)
360
361/* Initialize and use the cache information */
362extern int read_index(struct index_state *);
363extern int read_index_from(struct index_state *, const char *path);
364extern int is_index_unborn(struct index_state *);
365extern int read_index_unmerged(struct index_state *);
366extern int write_index(const struct index_state *, int newfd);
367extern int discard_index(struct index_state *);
368extern int unmerged_index(const struct index_state *);
369extern int verify_path(const char *path);
370extern struct cache_entry *index_name_exists(struct index_state *istate, const char *name, int namelen, int igncase);
371extern int index_name_pos(const struct index_state *, const char *name, int namelen);
372#define ADD_CACHE_OK_TO_ADD 1 /* Ok to add */
373#define ADD_CACHE_OK_TO_REPLACE 2 /* Ok to replace file/directory */
374#define ADD_CACHE_SKIP_DFCHECK 4 /* Ok to skip DF conflict checks */
375#define ADD_CACHE_JUST_APPEND 8 /* Append only; tree.c::read_tree() */
376extern int add_index_entry(struct index_state *, struct cache_entry *ce, int option);
377extern struct cache_entry *refresh_cache_entry(struct cache_entry *ce, int really);
378extern void rename_index_entry_at(struct index_state *, int pos, const char *new_name);
379extern int remove_index_entry_at(struct index_state *, int pos);
380extern int remove_file_from_index(struct index_state *, const char *path);
381#define ADD_CACHE_VERBOSE 1
382#define ADD_CACHE_PRETEND 2
383#define ADD_CACHE_IGNORE_ERRORS 4
384extern int add_to_index(struct index_state *, const char *path, struct stat *, int flags);
385extern int add_file_to_index(struct index_state *, const char *path, int flags);
386extern struct cache_entry *make_cache_entry(unsigned int mode, const unsigned char *sha1, const char *path, int stage, int refresh);
387extern int ce_same_name(struct cache_entry *a, struct cache_entry *b);
388extern int index_name_is_other(const struct index_state *, const char *, int);
389
390/* do stat comparison even if CE_VALID is true */
391#define CE_MATCH_IGNORE_VALID 01
392/* do not check the contents but report dirty on racily-clean entries */
393#define CE_MATCH_RACY_IS_DIRTY 02
394extern int ie_match_stat(const struct index_state *, struct cache_entry *, struct stat *, unsigned int);
395extern int ie_modified(const struct index_state *, struct cache_entry *, struct stat *, unsigned int);
396
397extern int ce_path_match(const struct cache_entry *ce, const char **pathspec);
398extern int index_fd(unsigned char *sha1, int fd, struct stat *st, int write_object, enum object_type type, const char *path);
399extern int index_pipe(unsigned char *sha1, int fd, const char *type, int write_object);
400extern int index_path(unsigned char *sha1, const char *path, struct stat *st, int write_object);
401extern void fill_stat_cache_info(struct cache_entry *ce, struct stat *st);
402
403#define REFRESH_REALLY 0x0001 /* ignore_valid */
404#define REFRESH_UNMERGED 0x0002 /* allow unmerged */
405#define REFRESH_QUIET 0x0004 /* be quiet about it */
406#define REFRESH_IGNORE_MISSING 0x0008 /* ignore non-existent */
407#define REFRESH_IGNORE_SUBMODULES 0x0010 /* ignore submodules */
408#define REFRESH_SAY_CHANGED 0x0020 /* say "changed" not "needs update" */
409extern int refresh_index(struct index_state *, unsigned int flags, const char **pathspec, char *seen);
410
411struct lock_file {
412 struct lock_file *next;
413 int fd;
414 pid_t owner;
415 char on_list;
416 char filename[PATH_MAX];
417};
418#define LOCK_DIE_ON_ERROR 1
419#define LOCK_NODEREF 2
420extern int hold_lock_file_for_update(struct lock_file *, const char *path, int);
421extern int hold_lock_file_for_append(struct lock_file *, const char *path, int);
422extern int commit_lock_file(struct lock_file *);
423
424extern int hold_locked_index(struct lock_file *, int);
425extern int commit_locked_index(struct lock_file *);
426extern void set_alternate_index_output(const char *);
427extern int close_lock_file(struct lock_file *);
428extern void rollback_lock_file(struct lock_file *);
429extern int delete_ref(const char *, const unsigned char *sha1, int delopt);
430
431/* Environment bits from configuration mechanism */
432extern int trust_executable_bit;
433extern int trust_ctime;
434extern int quote_path_fully;
435extern int has_symlinks;
436extern int ignore_case;
437extern int assume_unchanged;
438extern int prefer_symlink_refs;
439extern int log_all_ref_updates;
440extern int warn_ambiguous_refs;
441extern int shared_repository;
442extern const char *apply_default_whitespace;
443extern int zlib_compression_level;
444extern int core_compression_level;
445extern int core_compression_seen;
446extern size_t packed_git_window_size;
447extern size_t packed_git_limit;
448extern size_t delta_base_cache_limit;
449extern int auto_crlf;
450extern int fsync_object_files;
451
452enum safe_crlf {
453 SAFE_CRLF_FALSE = 0,
454 SAFE_CRLF_FAIL = 1,
455 SAFE_CRLF_WARN = 2,
456};
457
458extern enum safe_crlf safe_crlf;
459
460enum branch_track {
461 BRANCH_TRACK_NEVER = 0,
462 BRANCH_TRACK_REMOTE,
463 BRANCH_TRACK_ALWAYS,
464 BRANCH_TRACK_EXPLICIT,
465};
466
467enum rebase_setup_type {
468 AUTOREBASE_NEVER = 0,
469 AUTOREBASE_LOCAL,
470 AUTOREBASE_REMOTE,
471 AUTOREBASE_ALWAYS,
472};
473
474extern enum branch_track git_branch_track;
475extern enum rebase_setup_type autorebase;
476
477#define GIT_REPO_VERSION 0
478extern int repository_format_version;
479extern int check_repository_format(void);
480
481#define MTIME_CHANGED 0x0001
482#define CTIME_CHANGED 0x0002
483#define OWNER_CHANGED 0x0004
484#define MODE_CHANGED 0x0008
485#define INODE_CHANGED 0x0010
486#define DATA_CHANGED 0x0020
487#define TYPE_CHANGED 0x0040
488
489extern char *mksnpath(char *buf, size_t n, const char *fmt, ...)
490 __attribute__((format (printf, 3, 4)));
491extern char *git_snpath(char *buf, size_t n, const char *fmt, ...)
492 __attribute__((format (printf, 3, 4)));
493extern char *git_pathdup(const char *fmt, ...)
494 __attribute__((format (printf, 1, 2)));
495
496/* Return a statically allocated filename matching the sha1 signature */
497extern char *mkpath(const char *fmt, ...) __attribute__((format (printf, 1, 2)));
498extern char *git_path(const char *fmt, ...) __attribute__((format (printf, 1, 2)));
499extern char *sha1_file_name(const unsigned char *sha1);
500extern char *sha1_pack_name(const unsigned char *sha1);
501extern char *sha1_pack_index_name(const unsigned char *sha1);
502extern const char *find_unique_abbrev(const unsigned char *sha1, int);
503extern const unsigned char null_sha1[20];
504static inline int is_null_sha1(const unsigned char *sha1)
505{
506 return !memcmp(sha1, null_sha1, 20);
507}
508static inline int hashcmp(const unsigned char *sha1, const unsigned char *sha2)
509{
510 return memcmp(sha1, sha2, 20);
511}
512static inline void hashcpy(unsigned char *sha_dst, const unsigned char *sha_src)
513{
514 memcpy(sha_dst, sha_src, 20);
515}
516static inline void hashclr(unsigned char *hash)
517{
518 memset(hash, 0, 20);
519}
520
521int git_mkstemp(char *path, size_t n, const char *template);
522
523/*
524 * NOTE NOTE NOTE!!
525 *
526 * PERM_UMASK, OLD_PERM_GROUP and OLD_PERM_EVERYBODY enumerations must
527 * not be changed. Old repositories have core.sharedrepository written in
528 * numeric format, and therefore these values are preserved for compatibility
529 * reasons.
530 */
531enum sharedrepo {
532 PERM_UMASK = 0,
533 OLD_PERM_GROUP = 1,
534 OLD_PERM_EVERYBODY = 2,
535 PERM_GROUP = 0660,
536 PERM_EVERYBODY = 0664,
537};
538int git_config_perm(const char *var, const char *value);
539int adjust_shared_perm(const char *path);
540int safe_create_leading_directories(char *path);
541int safe_create_leading_directories_const(const char *path);
542char *enter_repo(char *path, int strict);
543static inline int is_absolute_path(const char *path)
544{
545 return path[0] == '/' || has_dos_drive_prefix(path);
546}
547const char *make_absolute_path(const char *path);
548const char *make_nonrelative_path(const char *path);
549const char *make_relative_path(const char *abs, const char *base);
550int normalize_absolute_path(char *buf, const char *path);
551int longest_ancestor_length(const char *path, const char *prefix_list);
552
553/* Read and unpack a sha1 file into memory, write memory to a sha1 file */
554extern int sha1_object_info(const unsigned char *, unsigned long *);
555extern void * read_sha1_file(const unsigned char *sha1, enum object_type *type, unsigned long *size);
556extern int hash_sha1_file(const void *buf, unsigned long len, const char *type, unsigned char *sha1);
557extern int write_sha1_file(void *buf, unsigned long len, const char *type, unsigned char *return_sha1);
558extern int pretend_sha1_file(void *, unsigned long, enum object_type, unsigned char *);
559extern int force_object_loose(const unsigned char *sha1, time_t mtime);
560
561/* just like read_sha1_file(), but non fatal in presence of bad objects */
562extern void *read_object(const unsigned char *sha1, enum object_type *type, unsigned long *size);
563
564extern int check_sha1_signature(const unsigned char *sha1, void *buf, unsigned long size, const char *type);
565
566extern int move_temp_to_file(const char *tmpfile, const char *filename);
567
568extern int has_sha1_pack(const unsigned char *sha1, const char **ignore);
569extern int has_sha1_file(const unsigned char *sha1);
570extern int has_loose_object_nonlocal(const unsigned char *sha1);
571
572extern int has_pack_file(const unsigned char *sha1);
573extern int has_pack_index(const unsigned char *sha1);
574
575extern const signed char hexval_table[256];
576static inline unsigned int hexval(unsigned char c)
577{
578 return hexval_table[c];
579}
580
581/* Convert to/from hex/sha1 representation */
582#define MINIMUM_ABBREV 4
583#define DEFAULT_ABBREV 7
584
585extern int get_sha1(const char *str, unsigned char *sha1);
586extern int get_sha1_with_mode(const char *str, unsigned char *sha1, unsigned *mode);
587extern int get_sha1_hex(const char *hex, unsigned char *sha1);
588extern char *sha1_to_hex(const unsigned char *sha1); /* static buffer result! */
589extern int read_ref(const char *filename, unsigned char *sha1);
590extern const char *resolve_ref(const char *path, unsigned char *sha1, int, int *);
591extern int dwim_ref(const char *str, int len, unsigned char *sha1, char **ref);
592extern int dwim_log(const char *str, int len, unsigned char *sha1, char **ref);
593
594extern int refname_match(const char *abbrev_name, const char *full_name, const char **rules);
595extern const char *ref_rev_parse_rules[];
596extern const char *ref_fetch_rules[];
597
598extern int create_symref(const char *ref, const char *refs_heads_master, const char *logmsg);
599extern int validate_headref(const char *ref);
600
601extern int base_name_compare(const char *name1, int len1, int mode1, const char *name2, int len2, int mode2);
602extern int df_name_compare(const char *name1, int len1, int mode1, const char *name2, int len2, int mode2);
603extern int cache_name_compare(const char *name1, int len1, const char *name2, int len2);
604
605extern void *read_object_with_reference(const unsigned char *sha1,
606 const char *required_type,
607 unsigned long *size,
608 unsigned char *sha1_ret);
609
610extern struct object *peel_to_type(const char *name, int namelen,
611 struct object *o, enum object_type);
612
613enum date_mode {
614 DATE_NORMAL = 0,
615 DATE_RELATIVE,
616 DATE_SHORT,
617 DATE_LOCAL,
618 DATE_ISO8601,
619 DATE_RFC2822
620};
621
622const char *show_date(unsigned long time, int timezone, enum date_mode mode);
623int parse_date(const char *date, char *buf, int bufsize);
624void datestamp(char *buf, int bufsize);
625unsigned long approxidate(const char *);
626enum date_mode parse_date_format(const char *format);
627
628#define IDENT_WARN_ON_NO_NAME 1
629#define IDENT_ERROR_ON_NO_NAME 2
630#define IDENT_NO_DATE 4
631extern const char *git_author_info(int);
632extern const char *git_committer_info(int);
633extern const char *fmt_ident(const char *name, const char *email, const char *date_str, int);
634extern const char *fmt_name(const char *name, const char *email);
635
636struct checkout {
637 const char *base_dir;
638 int base_dir_len;
639 unsigned force:1,
640 quiet:1,
641 not_new:1,
642 refresh_cache:1;
643};
644
645extern int checkout_entry(struct cache_entry *ce, const struct checkout *state, char *topath);
646extern int has_symlink_leading_path(int len, const char *name);
647
648extern struct alternate_object_database {
649 struct alternate_object_database *next;
650 char *name;
651 char base[FLEX_ARRAY]; /* more */
652} *alt_odb_list;
653extern void prepare_alt_odb(void);
654extern void add_to_alternates_file(const char *reference);
655
656struct pack_window {
657 struct pack_window *next;
658 unsigned char *base;
659 off_t offset;
660 size_t len;
661 unsigned int last_used;
662 unsigned int inuse_cnt;
663};
664
665extern struct packed_git {
666 struct packed_git *next;
667 struct pack_window *windows;
668 off_t pack_size;
669 const void *index_data;
670 size_t index_size;
671 uint32_t num_objects;
672 uint32_t num_bad_objects;
673 unsigned char *bad_object_sha1;
674 int index_version;
675 time_t mtime;
676 int pack_fd;
677 unsigned pack_local:1,
678 pack_keep:1;
679 unsigned char sha1[20];
680 /* something like ".git/objects/pack/xxxxx.pack" */
681 char pack_name[FLEX_ARRAY]; /* more */
682} *packed_git;
683
684struct pack_entry {
685 off_t offset;
686 unsigned char sha1[20];
687 struct packed_git *p;
688};
689
690struct ref {
691 struct ref *next;
692 unsigned char old_sha1[20];
693 unsigned char new_sha1[20];
694 char *symref;
695 unsigned int force:1,
696 merge:1,
697 nonfastforward:1,
698 deletion:1;
699 enum {
700 REF_STATUS_NONE = 0,
701 REF_STATUS_OK,
702 REF_STATUS_REJECT_NONFASTFORWARD,
703 REF_STATUS_REJECT_NODELETE,
704 REF_STATUS_UPTODATE,
705 REF_STATUS_REMOTE_REJECT,
706 REF_STATUS_EXPECTING_REPORT,
707 } status;
708 char *remote_status;
709 struct ref *peer_ref; /* when renaming */
710 char name[FLEX_ARRAY]; /* more */
711};
712
713#define REF_NORMAL (1u << 0)
714#define REF_HEADS (1u << 1)
715#define REF_TAGS (1u << 2)
716
717extern struct ref *find_ref_by_name(struct ref *list, const char *name);
718
719#define CONNECT_VERBOSE (1u << 0)
720extern struct child_process *git_connect(int fd[2], const char *url, const char *prog, int flags);
721extern int finish_connect(struct child_process *conn);
722extern int path_match(const char *path, int nr, char **match);
723extern int get_ack(int fd, unsigned char *result_sha1);
724extern struct ref **get_remote_heads(int in, struct ref **list, int nr_match, char **match, unsigned int flags);
725extern int server_supports(const char *feature);
726
727extern struct packed_git *parse_pack_index(unsigned char *sha1);
728
729extern void prepare_packed_git(void);
730extern void reprepare_packed_git(void);
731extern void install_packed_git(struct packed_git *pack);
732
733extern struct packed_git *find_sha1_pack(const unsigned char *sha1,
734 struct packed_git *packs);
735
736extern void pack_report(void);
737extern int open_pack_index(struct packed_git *);
738extern unsigned char* use_pack(struct packed_git *, struct pack_window **, off_t, unsigned int *);
739extern void close_pack_windows(struct packed_git *);
740extern void unuse_pack(struct pack_window **);
741extern void free_pack_by_name(const char *);
742extern void clear_delta_base_cache(void);
743extern struct packed_git *add_packed_git(const char *, int, int);
744extern const unsigned char *nth_packed_object_sha1(struct packed_git *, uint32_t);
745extern off_t nth_packed_object_offset(const struct packed_git *, uint32_t);
746extern off_t find_pack_entry_one(const unsigned char *, struct packed_git *);
747extern void *unpack_entry(struct packed_git *, off_t, enum object_type *, unsigned long *);
748extern unsigned long unpack_object_header_gently(const unsigned char *buf, unsigned long len, enum object_type *type, unsigned long *sizep);
749extern unsigned long get_size_from_delta(struct packed_git *, struct pack_window **, off_t);
750extern const char *packed_object_info_detail(struct packed_git *, off_t, unsigned long *, unsigned long *, unsigned int *, unsigned char *);
751extern int matches_pack_name(struct packed_git *p, const char *name);
752
753/* Dumb servers support */
754extern int update_server_info(int);
755
756typedef int (*config_fn_t)(const char *, const char *, void *);
757extern int git_default_config(const char *, const char *, void *);
758extern int git_config_from_file(config_fn_t fn, const char *, void *);
759extern int git_config(config_fn_t fn, void *);
760extern int git_parse_long(const char *, long *);
761extern int git_parse_ulong(const char *, unsigned long *);
762extern int git_config_int(const char *, const char *);
763extern unsigned long git_config_ulong(const char *, const char *);
764extern int git_config_bool_or_int(const char *, const char *, int *);
765extern int git_config_bool(const char *, const char *);
766extern int git_config_string(const char **, const char *, const char *);
767extern int git_config_set(const char *, const char *);
768extern int git_config_set_multivar(const char *, const char *, const char *, int);
769extern int git_config_rename_section(const char *, const char *);
770extern const char *git_etc_gitconfig(void);
771extern int check_repository_format_version(const char *var, const char *value, void *cb);
772extern int git_config_system(void);
773extern int git_config_global(void);
774extern int config_error_nonbool(const char *);
775extern const char *config_exclusive_filename;
776
777#define MAX_GITNAME (1000)
778extern char git_default_email[MAX_GITNAME];
779extern char git_default_name[MAX_GITNAME];
780extern int user_ident_explicitly_given;
781
782extern const char *git_commit_encoding;
783extern const char *git_log_output_encoding;
784
785/* IO helper functions */
786extern void maybe_flush_or_die(FILE *, const char *);
787extern int copy_fd(int ifd, int ofd);
788extern int copy_file(const char *dst, const char *src, int mode);
789extern ssize_t read_in_full(int fd, void *buf, size_t count);
790extern ssize_t write_in_full(int fd, const void *buf, size_t count);
791extern void write_or_die(int fd, const void *buf, size_t count);
792extern int write_or_whine(int fd, const void *buf, size_t count, const char *msg);
793extern int write_or_whine_pipe(int fd, const void *buf, size_t count, const char *msg);
794extern void fsync_or_die(int fd, const char *);
795
796/* pager.c */
797extern void setup_pager(void);
798extern const char *pager_program;
799extern int pager_in_use(void);
800extern int pager_use_color;
801
802extern const char *editor_program;
803extern const char *excludes_file;
804
805/* base85 */
806int decode_85(char *dst, const char *line, int linelen);
807void encode_85(char *buf, const unsigned char *data, int bytes);
808
809/* alloc.c */
810extern void *alloc_blob_node(void);
811extern void *alloc_tree_node(void);
812extern void *alloc_commit_node(void);
813extern void *alloc_tag_node(void);
814extern void *alloc_object_node(void);
815extern void alloc_report(void);
816
817/* trace.c */
818extern void trace_printf(const char *format, ...);
819extern void trace_argv_printf(const char **argv, const char *format, ...);
820
821/* convert.c */
822/* returns 1 if *dst was used */
823extern int convert_to_git(const char *path, const char *src, size_t len,
824 struct strbuf *dst, enum safe_crlf checksafe);
825extern int convert_to_working_tree(const char *path, const char *src, size_t len, struct strbuf *dst);
826
827/* add */
828/*
829 * return 0 if success, 1 - if addition of a file failed and
830 * ADD_FILES_IGNORE_ERRORS was specified in flags
831 */
832int add_files_to_cache(const char *prefix, const char **pathspec, int flags);
833
834/* diff.c */
835extern int diff_auto_refresh_index;
836
837/* match-trees.c */
838void shift_tree(const unsigned char *, const unsigned char *, unsigned char *, int);
839
840/*
841 * whitespace rules.
842 * used by both diff and apply
843 */
844#define WS_TRAILING_SPACE 01
845#define WS_SPACE_BEFORE_TAB 02
846#define WS_INDENT_WITH_NON_TAB 04
847#define WS_CR_AT_EOL 010
848#define WS_DEFAULT_RULE (WS_TRAILING_SPACE|WS_SPACE_BEFORE_TAB)
849extern unsigned whitespace_rule_cfg;
850extern unsigned whitespace_rule(const char *);
851extern unsigned parse_whitespace_rule(const char *);
852extern unsigned ws_check(const char *line, int len, unsigned ws_rule);
853extern void ws_check_emit(const char *line, int len, unsigned ws_rule, FILE *stream, const char *set, const char *reset, const char *ws);
854extern char *whitespace_error_string(unsigned ws);
855extern int ws_fix_copy(char *, const char *, int, unsigned, int *);
856extern int ws_blank_line(const char *line, int len, unsigned ws_rule);
857
858/* ls-files */
859int pathspec_match(const char **spec, char *matched, const char *filename, int skiplen);
860int report_path_error(const char *ps_matched, const char **pathspec, int prefix_offset);
861void overlay_tree_on_cache(const char *tree_name, const char *prefix);
862
863char *alias_lookup(const char *alias);
864int split_cmdline(char *cmdline, const char ***argv);
865
866#endif /* CACHE_H */
Unnamed repository; edit this file 'description' to name the repository.