5eb61ac04ef7cdab4050db243aa226b4302ba56d
1#ifndef CACHE_H
2#define CACHE_H
3
4#include "git-compat-util.h"
5#include "strbuf.h"
6#include "hash.h"
7#include "advice.h"
8#include "gettext.h"
9
10#include SHA1_HEADER
11#ifndef git_SHA_CTX
12#define git_SHA_CTX SHA_CTX
13#define git_SHA1_Init SHA1_Init
14#define git_SHA1_Update SHA1_Update
15#define git_SHA1_Final SHA1_Final
16#endif
17
18#include <zlib.h>
19#if defined(NO_DEFLATE_BOUND) || ZLIB_VERNUM < 0x1200
20#define deflateBound(c,s) ((s) + (((s) + 7) >> 3) + (((s) + 63) >> 6) + 11)
21#endif
22
23void git_inflate_init(z_streamp strm);
24void git_inflate_init_gzip_only(z_streamp strm);
25void git_inflate_end(z_streamp strm);
26int git_inflate(z_streamp strm, int flush);
27
28void git_deflate_init(z_streamp strm, int level);
29void git_deflate_init_gzip(z_streamp strm, int level);
30void git_deflate_end(z_streamp strm);
31int git_deflate_end_gently(z_streamp strm);
32int git_deflate(z_streamp strm, int flush);
33
34#if defined(DT_UNKNOWN) && !defined(NO_D_TYPE_IN_DIRENT)
35#define DTYPE(de) ((de)->d_type)
36#else
37#undef DT_UNKNOWN
38#undef DT_DIR
39#undef DT_REG
40#undef DT_LNK
41#define DT_UNKNOWN 0
42#define DT_DIR 1
43#define DT_REG 2
44#define DT_LNK 3
45#define DTYPE(de) DT_UNKNOWN
46#endif
47
48/* unknown mode (impossible combination S_IFIFO|S_IFCHR) */
49#define S_IFINVALID 0030000
50
51/*
52 * A "directory link" is a link to another git directory.
53 *
54 * The value 0160000 is not normally a valid mode, and
55 * also just happens to be S_IFDIR + S_IFLNK
56 *
57 * NOTE! We *really* shouldn't depend on the S_IFxxx macros
58 * always having the same values everywhere. We should use
59 * our internal git values for these things, and then we can
60 * translate that to the OS-specific value. It just so
61 * happens that everybody shares the same bit representation
62 * in the UNIX world (and apparently wider too..)
63 */
64#define S_IFGITLINK 0160000
65#define S_ISGITLINK(m) (((m) & S_IFMT) == S_IFGITLINK)
66
67/*
68 * Intensive research over the course of many years has shown that
69 * port 9418 is totally unused by anything else. Or
70 *
71 * Your search - "port 9418" - did not match any documents.
72 *
73 * as www.google.com puts it.
74 *
75 * This port has been properly assigned for git use by IANA:
76 * git (Assigned-9418) [I06-050728-0001].
77 *
78 * git 9418/tcp git pack transfer service
79 * git 9418/udp git pack transfer service
80 *
81 * with Linus Torvalds <torvalds@osdl.org> as the point of
82 * contact. September 2005.
83 *
84 * See http://www.iana.org/assignments/port-numbers
85 */
86#define DEFAULT_GIT_PORT 9418
87
88/*
89 * Basic data structures for the directory cache
90 */
91
92#define CACHE_SIGNATURE 0x44495243 /* "DIRC" */
93struct cache_header {
94 unsigned int hdr_signature;
95 unsigned int hdr_version;
96 unsigned int hdr_entries;
97};
98
99/*
100 * The "cache_time" is just the low 32 bits of the
101 * time. It doesn't matter if it overflows - we only
102 * check it for equality in the 32 bits we save.
103 */
104struct cache_time {
105 unsigned int sec;
106 unsigned int nsec;
107};
108
109/*
110 * dev/ino/uid/gid/size are also just tracked to the low 32 bits
111 * Again - this is just a (very strong in practice) heuristic that
112 * the inode hasn't changed.
113 *
114 * We save the fields in big-endian order to allow using the
115 * index file over NFS transparently.
116 */
117struct ondisk_cache_entry {
118 struct cache_time ctime;
119 struct cache_time mtime;
120 unsigned int dev;
121 unsigned int ino;
122 unsigned int mode;
123 unsigned int uid;
124 unsigned int gid;
125 unsigned int size;
126 unsigned char sha1[20];
127 unsigned short flags;
128 char name[FLEX_ARRAY]; /* more */
129};
130
131/*
132 * This struct is used when CE_EXTENDED bit is 1
133 * The struct must match ondisk_cache_entry exactly from
134 * ctime till flags
135 */
136struct ondisk_cache_entry_extended {
137 struct cache_time ctime;
138 struct cache_time mtime;
139 unsigned int dev;
140 unsigned int ino;
141 unsigned int mode;
142 unsigned int uid;
143 unsigned int gid;
144 unsigned int size;
145 unsigned char sha1[20];
146 unsigned short flags;
147 unsigned short flags2;
148 char name[FLEX_ARRAY]; /* more */
149};
150
151struct cache_entry {
152 struct cache_time ce_ctime;
153 struct cache_time ce_mtime;
154 unsigned int ce_dev;
155 unsigned int ce_ino;
156 unsigned int ce_mode;
157 unsigned int ce_uid;
158 unsigned int ce_gid;
159 unsigned int ce_size;
160 unsigned int ce_flags;
161 unsigned char sha1[20];
162 struct cache_entry *next;
163 char name[FLEX_ARRAY]; /* more */
164};
165
166#define CE_NAMEMASK (0x0fff)
167#define CE_STAGEMASK (0x3000)
168#define CE_EXTENDED (0x4000)
169#define CE_VALID (0x8000)
170#define CE_STAGESHIFT 12
171
172/*
173 * Range 0xFFFF0000 in ce_flags is divided into
174 * two parts: in-memory flags and on-disk ones.
175 * Flags in CE_EXTENDED_FLAGS will get saved on-disk
176 * if you want to save a new flag, add it in
177 * CE_EXTENDED_FLAGS
178 *
179 * In-memory only flags
180 */
181#define CE_UPDATE (1 << 16)
182#define CE_REMOVE (1 << 17)
183#define CE_UPTODATE (1 << 18)
184#define CE_ADDED (1 << 19)
185
186#define CE_HASHED (1 << 20)
187#define CE_UNHASHED (1 << 21)
188#define CE_WT_REMOVE (1 << 22) /* remove in work directory */
189#define CE_CONFLICTED (1 << 23)
190
191#define CE_UNPACKED (1 << 24)
192#define CE_NEW_SKIP_WORKTREE (1 << 25)
193
194/*
195 * Extended on-disk flags
196 */
197#define CE_INTENT_TO_ADD (1 << 29)
198#define CE_SKIP_WORKTREE (1 << 30)
199/* CE_EXTENDED2 is for future extension */
200#define CE_EXTENDED2 (1 << 31)
201
202#define CE_EXTENDED_FLAGS (CE_INTENT_TO_ADD | CE_SKIP_WORKTREE)
203
204/*
205 * Safeguard to avoid saving wrong flags:
206 * - CE_EXTENDED2 won't get saved until its semantic is known
207 * - Bits in 0x0000FFFF have been saved in ce_flags already
208 * - Bits in 0x003F0000 are currently in-memory flags
209 */
210#if CE_EXTENDED_FLAGS & 0x803FFFFF
211#error "CE_EXTENDED_FLAGS out of range"
212#endif
213
214/*
215 * Copy the sha1 and stat state of a cache entry from one to
216 * another. But we never change the name, or the hash state!
217 */
218#define CE_STATE_MASK (CE_HASHED | CE_UNHASHED)
219static inline void copy_cache_entry(struct cache_entry *dst, struct cache_entry *src)
220{
221 unsigned int state = dst->ce_flags & CE_STATE_MASK;
222
223 /* Don't copy hash chain and name */
224 memcpy(dst, src, offsetof(struct cache_entry, next));
225
226 /* Restore the hash state */
227 dst->ce_flags = (dst->ce_flags & ~CE_STATE_MASK) | state;
228}
229
230static inline unsigned create_ce_flags(size_t len, unsigned stage)
231{
232 if (len >= CE_NAMEMASK)
233 len = CE_NAMEMASK;
234 return (len | (stage << CE_STAGESHIFT));
235}
236
237static inline size_t ce_namelen(const struct cache_entry *ce)
238{
239 size_t len = ce->ce_flags & CE_NAMEMASK;
240 if (len < CE_NAMEMASK)
241 return len;
242 return strlen(ce->name + CE_NAMEMASK) + CE_NAMEMASK;
243}
244
245#define ce_size(ce) cache_entry_size(ce_namelen(ce))
246#define ondisk_ce_size(ce) (((ce)->ce_flags & CE_EXTENDED) ? \
247 ondisk_cache_entry_extended_size(ce_namelen(ce)) : \
248 ondisk_cache_entry_size(ce_namelen(ce)))
249#define ce_stage(ce) ((CE_STAGEMASK & (ce)->ce_flags) >> CE_STAGESHIFT)
250#define ce_uptodate(ce) ((ce)->ce_flags & CE_UPTODATE)
251#define ce_skip_worktree(ce) ((ce)->ce_flags & CE_SKIP_WORKTREE)
252#define ce_mark_uptodate(ce) ((ce)->ce_flags |= CE_UPTODATE)
253
254#define ce_permissions(mode) (((mode) & 0100) ? 0755 : 0644)
255static inline unsigned int create_ce_mode(unsigned int mode)
256{
257 if (S_ISLNK(mode))
258 return S_IFLNK;
259 if (S_ISDIR(mode) || S_ISGITLINK(mode))
260 return S_IFGITLINK;
261 return S_IFREG | ce_permissions(mode);
262}
263static inline unsigned int ce_mode_from_stat(struct cache_entry *ce, unsigned int mode)
264{
265 extern int trust_executable_bit, has_symlinks;
266 if (!has_symlinks && S_ISREG(mode) &&
267 ce && S_ISLNK(ce->ce_mode))
268 return ce->ce_mode;
269 if (!trust_executable_bit && S_ISREG(mode)) {
270 if (ce && S_ISREG(ce->ce_mode))
271 return ce->ce_mode;
272 return create_ce_mode(0666);
273 }
274 return create_ce_mode(mode);
275}
276static inline int ce_to_dtype(const struct cache_entry *ce)
277{
278 unsigned ce_mode = ntohl(ce->ce_mode);
279 if (S_ISREG(ce_mode))
280 return DT_REG;
281 else if (S_ISDIR(ce_mode) || S_ISGITLINK(ce_mode))
282 return DT_DIR;
283 else if (S_ISLNK(ce_mode))
284 return DT_LNK;
285 else
286 return DT_UNKNOWN;
287}
288static inline unsigned int canon_mode(unsigned int mode)
289{
290 if (S_ISREG(mode))
291 return S_IFREG | ce_permissions(mode);
292 if (S_ISLNK(mode))
293 return S_IFLNK;
294 if (S_ISDIR(mode))
295 return S_IFDIR;
296 return S_IFGITLINK;
297}
298
299#define flexible_size(STRUCT,len) ((offsetof(struct STRUCT,name) + (len) + 8) & ~7)
300#define cache_entry_size(len) flexible_size(cache_entry,len)
301#define ondisk_cache_entry_size(len) flexible_size(ondisk_cache_entry,len)
302#define ondisk_cache_entry_extended_size(len) flexible_size(ondisk_cache_entry_extended,len)
303
304struct index_state {
305 struct cache_entry **cache;
306 unsigned int cache_nr, cache_alloc, cache_changed;
307 struct string_list *resolve_undo;
308 struct cache_tree *cache_tree;
309 struct cache_time timestamp;
310 void *alloc;
311 unsigned name_hash_initialized : 1,
312 initialized : 1;
313 struct hash_table name_hash;
314};
315
316extern struct index_state the_index;
317
318/* Name hashing */
319extern void add_name_hash(struct index_state *istate, struct cache_entry *ce);
320/*
321 * We don't actually *remove* it, we can just mark it invalid so that
322 * we won't find it in lookups.
323 *
324 * Not only would we have to search the lists (simple enough), but
325 * we'd also have to rehash other hash buckets in case this makes the
326 * hash bucket empty (common). So it's much better to just mark
327 * it.
328 */
329static inline void remove_name_hash(struct cache_entry *ce)
330{
331 ce->ce_flags |= CE_UNHASHED;
332}
333
334
335#ifndef NO_THE_INDEX_COMPATIBILITY_MACROS
336#define active_cache (the_index.cache)
337#define active_nr (the_index.cache_nr)
338#define active_alloc (the_index.cache_alloc)
339#define active_cache_changed (the_index.cache_changed)
340#define active_cache_tree (the_index.cache_tree)
341
342#define read_cache() read_index(&the_index)
343#define read_cache_from(path) read_index_from(&the_index, (path))
344#define read_cache_preload(pathspec) read_index_preload(&the_index, (pathspec))
345#define is_cache_unborn() is_index_unborn(&the_index)
346#define read_cache_unmerged() read_index_unmerged(&the_index)
347#define write_cache(newfd, cache, entries) write_index(&the_index, (newfd))
348#define discard_cache() discard_index(&the_index)
349#define unmerged_cache() unmerged_index(&the_index)
350#define cache_name_pos(name, namelen) index_name_pos(&the_index,(name),(namelen))
351#define add_cache_entry(ce, option) add_index_entry(&the_index, (ce), (option))
352#define rename_cache_entry_at(pos, new_name) rename_index_entry_at(&the_index, (pos), (new_name))
353#define remove_cache_entry_at(pos) remove_index_entry_at(&the_index, (pos))
354#define remove_file_from_cache(path) remove_file_from_index(&the_index, (path))
355#define add_to_cache(path, st, flags) add_to_index(&the_index, (path), (st), (flags))
356#define add_file_to_cache(path, flags) add_file_to_index(&the_index, (path), (flags))
357#define refresh_cache(flags) refresh_index(&the_index, (flags), NULL, NULL, NULL)
358#define ce_match_stat(ce, st, options) ie_match_stat(&the_index, (ce), (st), (options))
359#define ce_modified(ce, st, options) ie_modified(&the_index, (ce), (st), (options))
360#define cache_name_exists(name, namelen, igncase) index_name_exists(&the_index, (name), (namelen), (igncase))
361#define cache_name_is_other(name, namelen) index_name_is_other(&the_index, (name), (namelen))
362#define resolve_undo_clear() resolve_undo_clear_index(&the_index)
363#define unmerge_cache_entry_at(at) unmerge_index_entry_at(&the_index, at)
364#define unmerge_cache(pathspec) unmerge_index(&the_index, pathspec)
365#endif
366
367enum object_type {
368 OBJ_BAD = -1,
369 OBJ_NONE = 0,
370 OBJ_COMMIT = 1,
371 OBJ_TREE = 2,
372 OBJ_BLOB = 3,
373 OBJ_TAG = 4,
374 /* 5 for future expansion */
375 OBJ_OFS_DELTA = 6,
376 OBJ_REF_DELTA = 7,
377 OBJ_ANY,
378 OBJ_MAX
379};
380
381static inline enum object_type object_type(unsigned int mode)
382{
383 return S_ISDIR(mode) ? OBJ_TREE :
384 S_ISGITLINK(mode) ? OBJ_COMMIT :
385 OBJ_BLOB;
386}
387
388#define GIT_DIR_ENVIRONMENT "GIT_DIR"
389#define GIT_WORK_TREE_ENVIRONMENT "GIT_WORK_TREE"
390#define DEFAULT_GIT_DIR_ENVIRONMENT ".git"
391#define DB_ENVIRONMENT "GIT_OBJECT_DIRECTORY"
392#define INDEX_ENVIRONMENT "GIT_INDEX_FILE"
393#define GRAFT_ENVIRONMENT "GIT_GRAFT_FILE"
394#define TEMPLATE_DIR_ENVIRONMENT "GIT_TEMPLATE_DIR"
395#define CONFIG_ENVIRONMENT "GIT_CONFIG"
396#define CONFIG_DATA_ENVIRONMENT "GIT_CONFIG_PARAMETERS"
397#define EXEC_PATH_ENVIRONMENT "GIT_EXEC_PATH"
398#define CEILING_DIRECTORIES_ENVIRONMENT "GIT_CEILING_DIRECTORIES"
399#define NO_REPLACE_OBJECTS_ENVIRONMENT "GIT_NO_REPLACE_OBJECTS"
400#define GITATTRIBUTES_FILE ".gitattributes"
401#define INFOATTRIBUTES_FILE "info/attributes"
402#define ATTRIBUTE_MACRO_PREFIX "[attr]"
403#define GIT_NOTES_REF_ENVIRONMENT "GIT_NOTES_REF"
404#define GIT_NOTES_DEFAULT_REF "refs/notes/commits"
405#define GIT_NOTES_DISPLAY_REF_ENVIRONMENT "GIT_NOTES_DISPLAY_REF"
406#define GIT_NOTES_REWRITE_REF_ENVIRONMENT "GIT_NOTES_REWRITE_REF"
407#define GIT_NOTES_REWRITE_MODE_ENVIRONMENT "GIT_NOTES_REWRITE_MODE"
408
409/*
410 * Repository-local GIT_* environment variables
411 * The array is NULL-terminated to simplify its usage in contexts such
412 * environment creation or simple walk of the list.
413 * The number of non-NULL entries is available as a macro.
414 */
415#define LOCAL_REPO_ENV_SIZE 9
416extern const char *const local_repo_env[LOCAL_REPO_ENV_SIZE + 1];
417
418extern int is_bare_repository_cfg;
419extern int is_bare_repository(void);
420extern int is_inside_git_dir(void);
421extern char *git_work_tree_cfg;
422extern int is_inside_work_tree(void);
423extern int have_git_dir(void);
424extern const char *get_git_dir(void);
425extern char *get_object_directory(void);
426extern char *get_index_file(void);
427extern char *get_graft_file(void);
428extern int set_git_dir(const char *path);
429extern const char *get_git_work_tree(void);
430extern const char *read_gitfile_gently(const char *path);
431extern void set_git_work_tree(const char *tree);
432
433#define ALTERNATE_DB_ENVIRONMENT "GIT_ALTERNATE_OBJECT_DIRECTORIES"
434
435extern const char **get_pathspec(const char *prefix, const char **pathspec);
436extern void setup_work_tree(void);
437extern const char *setup_git_directory_gently(int *);
438extern const char *setup_git_directory(void);
439extern char *prefix_path(const char *prefix, int len, const char *path);
440extern const char *prefix_filename(const char *prefix, int len, const char *path);
441extern int check_filename(const char *prefix, const char *name);
442extern void verify_filename(const char *prefix, const char *name);
443extern void verify_non_filename(const char *prefix, const char *name);
444
445#define INIT_DB_QUIET 0x0001
446
447extern int set_git_dir_init(const char *git_dir, const char *real_git_dir, int);
448extern int init_db(const char *template_dir, unsigned int flags);
449
450#define alloc_nr(x) (((x)+16)*3/2)
451
452/*
453 * Realloc the buffer pointed at by variable 'x' so that it can hold
454 * at least 'nr' entries; the number of entries currently allocated
455 * is 'alloc', using the standard growing factor alloc_nr() macro.
456 *
457 * DO NOT USE any expression with side-effect for 'x', 'nr', or 'alloc'.
458 */
459#define ALLOC_GROW(x, nr, alloc) \
460 do { \
461 if ((nr) > alloc) { \
462 if (alloc_nr(alloc) < (nr)) \
463 alloc = (nr); \
464 else \
465 alloc = alloc_nr(alloc); \
466 x = xrealloc((x), alloc * sizeof(*(x))); \
467 } \
468 } while (0)
469
470/* Initialize and use the cache information */
471extern int read_index(struct index_state *);
472extern int read_index_preload(struct index_state *, const char **pathspec);
473extern int read_index_from(struct index_state *, const char *path);
474extern int is_index_unborn(struct index_state *);
475extern int read_index_unmerged(struct index_state *);
476extern int write_index(struct index_state *, int newfd);
477extern int discard_index(struct index_state *);
478extern int unmerged_index(const struct index_state *);
479extern int verify_path(const char *path);
480extern struct cache_entry *index_name_exists(struct index_state *istate, const char *name, int namelen, int igncase);
481extern int index_name_pos(const struct index_state *, const char *name, int namelen);
482#define ADD_CACHE_OK_TO_ADD 1 /* Ok to add */
483#define ADD_CACHE_OK_TO_REPLACE 2 /* Ok to replace file/directory */
484#define ADD_CACHE_SKIP_DFCHECK 4 /* Ok to skip DF conflict checks */
485#define ADD_CACHE_JUST_APPEND 8 /* Append only; tree.c::read_tree() */
486#define ADD_CACHE_NEW_ONLY 16 /* Do not replace existing ones */
487extern int add_index_entry(struct index_state *, struct cache_entry *ce, int option);
488extern void rename_index_entry_at(struct index_state *, int pos, const char *new_name);
489extern int remove_index_entry_at(struct index_state *, int pos);
490extern void remove_marked_cache_entries(struct index_state *istate);
491extern int remove_file_from_index(struct index_state *, const char *path);
492#define ADD_CACHE_VERBOSE 1
493#define ADD_CACHE_PRETEND 2
494#define ADD_CACHE_IGNORE_ERRORS 4
495#define ADD_CACHE_IGNORE_REMOVAL 8
496#define ADD_CACHE_INTENT 16
497extern int add_to_index(struct index_state *, const char *path, struct stat *, int flags);
498extern int add_file_to_index(struct index_state *, const char *path, int flags);
499extern struct cache_entry *make_cache_entry(unsigned int mode, const unsigned char *sha1, const char *path, int stage, int refresh);
500extern int ce_same_name(struct cache_entry *a, struct cache_entry *b);
501extern int index_name_is_other(const struct index_state *, const char *, int);
502
503/* do stat comparison even if CE_VALID is true */
504#define CE_MATCH_IGNORE_VALID 01
505/* do not check the contents but report dirty on racily-clean entries */
506#define CE_MATCH_RACY_IS_DIRTY 02
507/* do stat comparison even if CE_SKIP_WORKTREE is true */
508#define CE_MATCH_IGNORE_SKIP_WORKTREE 04
509extern int ie_match_stat(const struct index_state *, struct cache_entry *, struct stat *, unsigned int);
510extern int ie_modified(const struct index_state *, struct cache_entry *, struct stat *, unsigned int);
511
512struct pathspec {
513 const char **raw; /* get_pathspec() result, not freed by free_pathspec() */
514 int nr;
515 unsigned int has_wildcard:1;
516 unsigned int recursive:1;
517 int max_depth;
518 struct pathspec_item {
519 const char *match;
520 int len;
521 unsigned int has_wildcard:1;
522 } *items;
523};
524
525extern int init_pathspec(struct pathspec *, const char **);
526extern void free_pathspec(struct pathspec *);
527extern int ce_path_match(const struct cache_entry *ce, const struct pathspec *pathspec);
528extern int index_fd(unsigned char *sha1, int fd, struct stat *st, int write_object, enum object_type type, const char *path, int format_check);
529extern int index_path(unsigned char *sha1, const char *path, struct stat *st, int write_object);
530extern void fill_stat_cache_info(struct cache_entry *ce, struct stat *st);
531
532#define REFRESH_REALLY 0x0001 /* ignore_valid */
533#define REFRESH_UNMERGED 0x0002 /* allow unmerged */
534#define REFRESH_QUIET 0x0004 /* be quiet about it */
535#define REFRESH_IGNORE_MISSING 0x0008 /* ignore non-existent */
536#define REFRESH_IGNORE_SUBMODULES 0x0010 /* ignore submodules */
537#define REFRESH_IN_PORCELAIN 0x0020 /* user friendly output, not "needs update" */
538extern int refresh_index(struct index_state *, unsigned int flags, const char **pathspec, char *seen, const char *header_msg);
539
540struct lock_file {
541 struct lock_file *next;
542 int fd;
543 pid_t owner;
544 char on_list;
545 char filename[PATH_MAX];
546};
547#define LOCK_DIE_ON_ERROR 1
548#define LOCK_NODEREF 2
549extern int unable_to_lock_error(const char *path, int err);
550extern NORETURN void unable_to_lock_index_die(const char *path, int err);
551extern int hold_lock_file_for_update(struct lock_file *, const char *path, int);
552extern int hold_lock_file_for_append(struct lock_file *, const char *path, int);
553extern int commit_lock_file(struct lock_file *);
554extern void update_index_if_able(struct index_state *, struct lock_file *);
555
556extern int hold_locked_index(struct lock_file *, int);
557extern int commit_locked_index(struct lock_file *);
558extern void set_alternate_index_output(const char *);
559extern int close_lock_file(struct lock_file *);
560extern void rollback_lock_file(struct lock_file *);
561extern int delete_ref(const char *, const unsigned char *sha1, int delopt);
562
563/* Environment bits from configuration mechanism */
564extern int trust_executable_bit;
565extern int trust_ctime;
566extern int quote_path_fully;
567extern int has_symlinks;
568extern int minimum_abbrev, default_abbrev;
569extern int ignore_case;
570extern int assume_unchanged;
571extern int prefer_symlink_refs;
572extern int log_all_ref_updates;
573extern int warn_ambiguous_refs;
574extern int shared_repository;
575extern const char *apply_default_whitespace;
576extern const char *apply_default_ignorewhitespace;
577extern int zlib_compression_level;
578extern int core_compression_level;
579extern int core_compression_seen;
580extern size_t packed_git_window_size;
581extern size_t packed_git_limit;
582extern size_t delta_base_cache_limit;
583extern unsigned long big_file_threshold;
584extern int read_replace_refs;
585extern int fsync_object_files;
586extern int core_preload_index;
587extern int core_apply_sparse_checkout;
588
589enum safe_crlf {
590 SAFE_CRLF_FALSE = 0,
591 SAFE_CRLF_FAIL = 1,
592 SAFE_CRLF_WARN = 2
593};
594
595extern enum safe_crlf safe_crlf;
596
597enum auto_crlf {
598 AUTO_CRLF_FALSE = 0,
599 AUTO_CRLF_TRUE = 1,
600 AUTO_CRLF_INPUT = -1
601};
602
603extern enum auto_crlf auto_crlf;
604
605enum eol {
606 EOL_UNSET,
607 EOL_CRLF,
608 EOL_LF,
609#ifdef NATIVE_CRLF
610 EOL_NATIVE = EOL_CRLF
611#else
612 EOL_NATIVE = EOL_LF
613#endif
614};
615
616extern enum eol eol;
617
618enum branch_track {
619 BRANCH_TRACK_UNSPECIFIED = -1,
620 BRANCH_TRACK_NEVER = 0,
621 BRANCH_TRACK_REMOTE,
622 BRANCH_TRACK_ALWAYS,
623 BRANCH_TRACK_EXPLICIT,
624 BRANCH_TRACK_OVERRIDE
625};
626
627enum rebase_setup_type {
628 AUTOREBASE_NEVER = 0,
629 AUTOREBASE_LOCAL,
630 AUTOREBASE_REMOTE,
631 AUTOREBASE_ALWAYS
632};
633
634enum push_default_type {
635 PUSH_DEFAULT_NOTHING = 0,
636 PUSH_DEFAULT_MATCHING,
637 PUSH_DEFAULT_UPSTREAM,
638 PUSH_DEFAULT_CURRENT
639};
640
641extern enum branch_track git_branch_track;
642extern enum rebase_setup_type autorebase;
643extern enum push_default_type push_default;
644
645enum object_creation_mode {
646 OBJECT_CREATION_USES_HARDLINKS = 0,
647 OBJECT_CREATION_USES_RENAMES = 1
648};
649
650extern enum object_creation_mode object_creation_mode;
651
652extern char *notes_ref_name;
653
654extern int grafts_replace_parents;
655
656#define GIT_REPO_VERSION 0
657extern int repository_format_version;
658extern int check_repository_format(void);
659
660#define MTIME_CHANGED 0x0001
661#define CTIME_CHANGED 0x0002
662#define OWNER_CHANGED 0x0004
663#define MODE_CHANGED 0x0008
664#define INODE_CHANGED 0x0010
665#define DATA_CHANGED 0x0020
666#define TYPE_CHANGED 0x0040
667
668extern char *mksnpath(char *buf, size_t n, const char *fmt, ...)
669 __attribute__((format (printf, 3, 4)));
670extern char *git_snpath(char *buf, size_t n, const char *fmt, ...)
671 __attribute__((format (printf, 3, 4)));
672extern char *git_pathdup(const char *fmt, ...)
673 __attribute__((format (printf, 1, 2)));
674
675/* Return a statically allocated filename matching the sha1 signature */
676extern char *mkpath(const char *fmt, ...) __attribute__((format (printf, 1, 2)));
677extern char *git_path(const char *fmt, ...) __attribute__((format (printf, 1, 2)));
678extern char *git_path_submodule(const char *path, const char *fmt, ...)
679 __attribute__((format (printf, 2, 3)));
680
681extern char *sha1_file_name(const unsigned char *sha1);
682extern char *sha1_pack_name(const unsigned char *sha1);
683extern char *sha1_pack_index_name(const unsigned char *sha1);
684extern const char *find_unique_abbrev(const unsigned char *sha1, int);
685extern const unsigned char null_sha1[20];
686static inline int is_null_sha1(const unsigned char *sha1)
687{
688 return !memcmp(sha1, null_sha1, 20);
689}
690static inline int hashcmp(const unsigned char *sha1, const unsigned char *sha2)
691{
692 return memcmp(sha1, sha2, 20);
693}
694static inline void hashcpy(unsigned char *sha_dst, const unsigned char *sha_src)
695{
696 memcpy(sha_dst, sha_src, 20);
697}
698static inline void hashclr(unsigned char *hash)
699{
700 memset(hash, 0, 20);
701}
702
703#define EMPTY_TREE_SHA1_HEX \
704 "4b825dc642cb6eb9a060e54bf8d69288fbee4904"
705#define EMPTY_TREE_SHA1_BIN_LITERAL \
706 "\x4b\x82\x5d\xc6\x42\xcb\x6e\xb9\xa0\x60" \
707 "\xe5\x4b\xf8\xd6\x92\x88\xfb\xee\x49\x04"
708#define EMPTY_TREE_SHA1_BIN \
709 ((const unsigned char *) EMPTY_TREE_SHA1_BIN_LITERAL)
710
711int git_mkstemp(char *path, size_t n, const char *template);
712
713int git_mkstemps(char *path, size_t n, const char *template, int suffix_len);
714
715/* set default permissions by passing mode arguments to open(2) */
716int git_mkstemps_mode(char *pattern, int suffix_len, int mode);
717int git_mkstemp_mode(char *pattern, int mode);
718
719/*
720 * NOTE NOTE NOTE!!
721 *
722 * PERM_UMASK, OLD_PERM_GROUP and OLD_PERM_EVERYBODY enumerations must
723 * not be changed. Old repositories have core.sharedrepository written in
724 * numeric format, and therefore these values are preserved for compatibility
725 * reasons.
726 */
727enum sharedrepo {
728 PERM_UMASK = 0,
729 OLD_PERM_GROUP = 1,
730 OLD_PERM_EVERYBODY = 2,
731 PERM_GROUP = 0660,
732 PERM_EVERYBODY = 0664
733};
734int git_config_perm(const char *var, const char *value);
735int set_shared_perm(const char *path, int mode);
736#define adjust_shared_perm(path) set_shared_perm((path), 0)
737int safe_create_leading_directories(char *path);
738int safe_create_leading_directories_const(const char *path);
739int mkdir_in_gitdir(const char *path);
740extern char *expand_user_path(const char *path);
741char *enter_repo(char *path, int strict);
742static inline int is_absolute_path(const char *path)
743{
744 return path[0] == '/' || has_dos_drive_prefix(path);
745}
746int is_directory(const char *);
747const char *real_path(const char *path);
748const char *absolute_path(const char *path);
749const char *relative_path(const char *abs, const char *base);
750int normalize_path_copy(char *dst, const char *src);
751int longest_ancestor_length(const char *path, const char *prefix_list);
752char *strip_path_suffix(const char *path, const char *suffix);
753int daemon_avoid_alias(const char *path);
754int offset_1st_component(const char *path);
755
756/* Read and unpack a sha1 file into memory, write memory to a sha1 file */
757extern int sha1_object_info(const unsigned char *, unsigned long *);
758extern void *read_sha1_file_repl(const unsigned char *sha1, enum object_type *type, unsigned long *size, const unsigned char **replacement);
759static inline void *read_sha1_file(const unsigned char *sha1, enum object_type *type, unsigned long *size)
760{
761 return read_sha1_file_repl(sha1, type, size, NULL);
762}
763extern int hash_sha1_file(const void *buf, unsigned long len, const char *type, unsigned char *sha1);
764extern int write_sha1_file(const void *buf, unsigned long len, const char *type, unsigned char *return_sha1);
765extern int pretend_sha1_file(void *, unsigned long, enum object_type, unsigned char *);
766extern int force_object_loose(const unsigned char *sha1, time_t mtime);
767
768/* global flag to enable extra checks when accessing packed objects */
769extern int do_check_packed_object_crc;
770
771extern int check_sha1_signature(const unsigned char *sha1, void *buf, unsigned long size, const char *type);
772
773extern int move_temp_to_file(const char *tmpfile, const char *filename);
774
775extern int has_sha1_pack(const unsigned char *sha1);
776extern int has_sha1_file(const unsigned char *sha1);
777extern int has_loose_object_nonlocal(const unsigned char *sha1);
778
779extern int has_pack_index(const unsigned char *sha1);
780
781extern void assert_sha1_type(const unsigned char *sha1, enum object_type expect);
782
783extern const signed char hexval_table[256];
784static inline unsigned int hexval(unsigned char c)
785{
786 return hexval_table[c];
787}
788
789/* Convert to/from hex/sha1 representation */
790#define MINIMUM_ABBREV minimum_abbrev
791#define DEFAULT_ABBREV default_abbrev
792
793struct object_context {
794 unsigned char tree[20];
795 char path[PATH_MAX];
796 unsigned mode;
797};
798
799extern int get_sha1(const char *str, unsigned char *sha1);
800extern int get_sha1_with_mode_1(const char *str, unsigned char *sha1, unsigned *mode, int gently, const char *prefix);
801static inline int get_sha1_with_mode(const char *str, unsigned char *sha1, unsigned *mode)
802{
803 return get_sha1_with_mode_1(str, sha1, mode, 1, NULL);
804}
805extern int get_sha1_with_context_1(const char *name, unsigned char *sha1, struct object_context *orc, int gently, const char *prefix);
806static inline int get_sha1_with_context(const char *str, unsigned char *sha1, struct object_context *orc)
807{
808 return get_sha1_with_context_1(str, sha1, orc, 1, NULL);
809}
810extern int get_sha1_hex(const char *hex, unsigned char *sha1);
811extern char *sha1_to_hex(const unsigned char *sha1); /* static buffer result! */
812extern int read_ref(const char *filename, unsigned char *sha1);
813extern const char *resolve_ref(const char *path, unsigned char *sha1, int, int *);
814extern int dwim_ref(const char *str, int len, unsigned char *sha1, char **ref);
815extern int dwim_log(const char *str, int len, unsigned char *sha1, char **ref);
816extern int interpret_branch_name(const char *str, struct strbuf *);
817extern int get_sha1_mb(const char *str, unsigned char *sha1);
818
819extern int refname_match(const char *abbrev_name, const char *full_name, const char **rules);
820extern const char *ref_rev_parse_rules[];
821extern const char *ref_fetch_rules[];
822
823extern int create_symref(const char *ref, const char *refs_heads_master, const char *logmsg);
824extern int validate_headref(const char *ref);
825
826extern int base_name_compare(const char *name1, int len1, int mode1, const char *name2, int len2, int mode2);
827extern int df_name_compare(const char *name1, int len1, int mode1, const char *name2, int len2, int mode2);
828extern int cache_name_compare(const char *name1, int len1, const char *name2, int len2);
829
830extern void *read_object_with_reference(const unsigned char *sha1,
831 const char *required_type,
832 unsigned long *size,
833 unsigned char *sha1_ret);
834
835extern struct object *peel_to_type(const char *name, int namelen,
836 struct object *o, enum object_type);
837
838enum date_mode {
839 DATE_NORMAL = 0,
840 DATE_RELATIVE,
841 DATE_SHORT,
842 DATE_LOCAL,
843 DATE_ISO8601,
844 DATE_RFC2822,
845 DATE_RAW
846};
847
848const char *show_date(unsigned long time, int timezone, enum date_mode mode);
849const char *show_date_relative(unsigned long time, int tz,
850 const struct timeval *now,
851 char *timebuf,
852 size_t timebuf_size);
853int parse_date(const char *date, char *buf, int bufsize);
854int parse_date_basic(const char *date, unsigned long *timestamp, int *offset);
855void datestamp(char *buf, int bufsize);
856#define approxidate(s) approxidate_careful((s), NULL)
857unsigned long approxidate_careful(const char *, int *);
858unsigned long approxidate_relative(const char *date, const struct timeval *now);
859enum date_mode parse_date_format(const char *format);
860
861#define IDENT_WARN_ON_NO_NAME 1
862#define IDENT_ERROR_ON_NO_NAME 2
863#define IDENT_NO_DATE 4
864extern const char *git_author_info(int);
865extern const char *git_committer_info(int);
866extern const char *fmt_ident(const char *name, const char *email, const char *date_str, int);
867extern const char *fmt_name(const char *name, const char *email);
868extern const char *git_editor(void);
869extern const char *git_pager(int stdout_is_tty);
870
871struct checkout {
872 const char *base_dir;
873 int base_dir_len;
874 unsigned force:1,
875 quiet:1,
876 not_new:1,
877 refresh_cache:1;
878};
879
880extern int checkout_entry(struct cache_entry *ce, const struct checkout *state, char *topath);
881
882struct cache_def {
883 char path[PATH_MAX + 1];
884 int len;
885 int flags;
886 int track_flags;
887 int prefix_len_stat_func;
888};
889
890extern int has_symlink_leading_path(const char *name, int len);
891extern int threaded_has_symlink_leading_path(struct cache_def *, const char *, int);
892extern int check_leading_path(const char *name, int len);
893extern int has_dirs_only_path(const char *name, int len, int prefix_len);
894extern void schedule_dir_for_removal(const char *name, int len);
895extern void remove_scheduled_dirs(void);
896
897extern struct alternate_object_database {
898 struct alternate_object_database *next;
899 char *name;
900 char base[FLEX_ARRAY]; /* more */
901} *alt_odb_list;
902extern void prepare_alt_odb(void);
903extern void add_to_alternates_file(const char *reference);
904typedef int alt_odb_fn(struct alternate_object_database *, void *);
905extern void foreach_alt_odb(alt_odb_fn, void*);
906
907struct pack_window {
908 struct pack_window *next;
909 unsigned char *base;
910 off_t offset;
911 size_t len;
912 unsigned int last_used;
913 unsigned int inuse_cnt;
914};
915
916extern struct packed_git {
917 struct packed_git *next;
918 struct pack_window *windows;
919 off_t pack_size;
920 const void *index_data;
921 size_t index_size;
922 uint32_t num_objects;
923 uint32_t num_bad_objects;
924 unsigned char *bad_object_sha1;
925 int index_version;
926 time_t mtime;
927 int pack_fd;
928 unsigned pack_local:1,
929 pack_keep:1,
930 do_not_close:1;
931 unsigned char sha1[20];
932 /* something like ".git/objects/pack/xxxxx.pack" */
933 char pack_name[FLEX_ARRAY]; /* more */
934} *packed_git;
935
936struct pack_entry {
937 off_t offset;
938 unsigned char sha1[20];
939 struct packed_git *p;
940};
941
942struct ref {
943 struct ref *next;
944 unsigned char old_sha1[20];
945 unsigned char new_sha1[20];
946 char *symref;
947 unsigned int force:1,
948 merge:1,
949 nonfastforward:1,
950 deletion:1;
951 enum {
952 REF_STATUS_NONE = 0,
953 REF_STATUS_OK,
954 REF_STATUS_REJECT_NONFASTFORWARD,
955 REF_STATUS_REJECT_NODELETE,
956 REF_STATUS_UPTODATE,
957 REF_STATUS_REMOTE_REJECT,
958 REF_STATUS_EXPECTING_REPORT
959 } status;
960 char *remote_status;
961 struct ref *peer_ref; /* when renaming */
962 char name[FLEX_ARRAY]; /* more */
963};
964
965#define REF_NORMAL (1u << 0)
966#define REF_HEADS (1u << 1)
967#define REF_TAGS (1u << 2)
968
969extern struct ref *find_ref_by_name(const struct ref *list, const char *name);
970
971#define CONNECT_VERBOSE (1u << 0)
972extern char *git_getpass(const char *prompt);
973extern struct child_process *git_connect(int fd[2], const char *url, const char *prog, int flags);
974extern int finish_connect(struct child_process *conn);
975extern int git_connection_is_socket(struct child_process *conn);
976extern int path_match(const char *path, int nr, char **match);
977struct extra_have_objects {
978 int nr, alloc;
979 unsigned char (*array)[20];
980};
981extern struct ref **get_remote_heads(int in, struct ref **list, int nr_match, char **match, unsigned int flags, struct extra_have_objects *);
982extern int server_supports(const char *feature);
983
984extern struct packed_git *parse_pack_index(unsigned char *sha1, const char *idx_path);
985
986extern void prepare_packed_git(void);
987extern void reprepare_packed_git(void);
988extern void install_packed_git(struct packed_git *pack);
989
990extern struct packed_git *find_sha1_pack(const unsigned char *sha1,
991 struct packed_git *packs);
992
993extern void pack_report(void);
994extern int open_pack_index(struct packed_git *);
995extern void close_pack_index(struct packed_git *);
996extern unsigned char *use_pack(struct packed_git *, struct pack_window **, off_t, unsigned int *);
997extern void close_pack_windows(struct packed_git *);
998extern void unuse_pack(struct pack_window **);
999extern void free_pack_by_name(const char *);
1000extern void clear_delta_base_cache(void);
1001extern struct packed_git *add_packed_git(const char *, int, int);
1002extern const unsigned char *nth_packed_object_sha1(struct packed_git *, uint32_t);
1003extern off_t nth_packed_object_offset(const struct packed_git *, uint32_t);
1004extern off_t find_pack_entry_one(const unsigned char *, struct packed_git *);
1005extern void *unpack_entry(struct packed_git *, off_t, enum object_type *, unsigned long *);
1006extern unsigned long unpack_object_header_buffer(const unsigned char *buf, unsigned long len, enum object_type *type, unsigned long *sizep);
1007extern unsigned long get_size_from_delta(struct packed_git *, struct pack_window **, off_t);
1008extern const char *packed_object_info_detail(struct packed_git *, off_t, unsigned long *, unsigned long *, unsigned int *, unsigned char *);
1009
1010/* Dumb servers support */
1011extern int update_server_info(int);
1012
1013typedef int (*config_fn_t)(const char *, const char *, void *);
1014extern int git_default_config(const char *, const char *, void *);
1015extern int git_config_from_file(config_fn_t fn, const char *, void *);
1016extern void git_config_push_parameter(const char *text);
1017extern int git_config_from_parameters(config_fn_t fn, void *data);
1018extern int git_config(config_fn_t fn, void *);
1019extern int git_config_early(config_fn_t fn, void *, const char *repo_config);
1020extern int git_parse_ulong(const char *, unsigned long *);
1021extern int git_config_int(const char *, const char *);
1022extern unsigned long git_config_ulong(const char *, const char *);
1023extern int git_config_bool_or_int(const char *, const char *, int *);
1024extern int git_config_bool(const char *, const char *);
1025extern int git_config_maybe_bool(const char *, const char *);
1026extern int git_config_string(const char **, const char *, const char *);
1027extern int git_config_pathname(const char **, const char *, const char *);
1028extern int git_config_set(const char *, const char *);
1029extern int git_config_parse_key(const char *, char **, int *);
1030extern int git_config_set_multivar(const char *, const char *, const char *, int);
1031extern int git_config_rename_section(const char *, const char *);
1032extern const char *git_etc_gitconfig(void);
1033extern int check_repository_format_version(const char *var, const char *value, void *cb);
1034extern int git_env_bool(const char *, int);
1035extern int git_config_system(void);
1036extern int config_error_nonbool(const char *);
1037extern const char *get_log_output_encoding(void);
1038extern const char *get_commit_output_encoding(void);
1039
1040extern const char *config_exclusive_filename;
1041
1042#define MAX_GITNAME (1000)
1043extern char git_default_email[MAX_GITNAME];
1044extern char git_default_name[MAX_GITNAME];
1045#define IDENT_NAME_GIVEN 01
1046#define IDENT_MAIL_GIVEN 02
1047#define IDENT_ALL_GIVEN (IDENT_NAME_GIVEN|IDENT_MAIL_GIVEN)
1048extern int user_ident_explicitly_given;
1049extern int user_ident_sufficiently_given(void);
1050
1051extern const char *git_commit_encoding;
1052extern const char *git_log_output_encoding;
1053extern const char *git_mailmap_file;
1054
1055/* IO helper functions */
1056extern void maybe_flush_or_die(FILE *, const char *);
1057extern int copy_fd(int ifd, int ofd);
1058extern int copy_file(const char *dst, const char *src, int mode);
1059extern int copy_file_with_time(const char *dst, const char *src, int mode);
1060extern void write_or_die(int fd, const void *buf, size_t count);
1061extern int write_or_whine(int fd, const void *buf, size_t count, const char *msg);
1062extern int write_or_whine_pipe(int fd, const void *buf, size_t count, const char *msg);
1063extern void fsync_or_die(int fd, const char *);
1064
1065extern ssize_t read_in_full(int fd, void *buf, size_t count);
1066extern ssize_t write_in_full(int fd, const void *buf, size_t count);
1067static inline ssize_t write_str_in_full(int fd, const char *str)
1068{
1069 return write_in_full(fd, str, strlen(str));
1070}
1071
1072/* pager.c */
1073extern void setup_pager(void);
1074extern const char *pager_program;
1075extern int pager_in_use(void);
1076extern int pager_use_color;
1077
1078extern const char *editor_program;
1079extern const char *askpass_program;
1080extern const char *excludes_file;
1081
1082/* base85 */
1083int decode_85(char *dst, const char *line, int linelen);
1084void encode_85(char *buf, const unsigned char *data, int bytes);
1085
1086/* alloc.c */
1087extern void *alloc_blob_node(void);
1088extern void *alloc_tree_node(void);
1089extern void *alloc_commit_node(void);
1090extern void *alloc_tag_node(void);
1091extern void *alloc_object_node(void);
1092extern void alloc_report(void);
1093
1094/* trace.c */
1095__attribute__((format (printf, 1, 2)))
1096extern void trace_printf(const char *format, ...);
1097extern void trace_vprintf(const char *key, const char *format, va_list ap);
1098__attribute__((format (printf, 2, 3)))
1099extern void trace_argv_printf(const char **argv, const char *format, ...);
1100extern void trace_repo_setup(const char *prefix);
1101extern int trace_want(const char *key);
1102extern void trace_strbuf(const char *key, const struct strbuf *buf);
1103
1104void packet_trace_identity(const char *prog);
1105
1106/* convert.c */
1107/* returns 1 if *dst was used */
1108extern int convert_to_git(const char *path, const char *src, size_t len,
1109 struct strbuf *dst, enum safe_crlf checksafe);
1110extern int convert_to_working_tree(const char *path, const char *src, size_t len, struct strbuf *dst);
1111extern int renormalize_buffer(const char *path, const char *src, size_t len, struct strbuf *dst);
1112
1113/* add */
1114/*
1115 * return 0 if success, 1 - if addition of a file failed and
1116 * ADD_FILES_IGNORE_ERRORS was specified in flags
1117 */
1118int add_files_to_cache(const char *prefix, const char **pathspec, int flags);
1119
1120/* diff.c */
1121extern int diff_auto_refresh_index;
1122
1123/* match-trees.c */
1124void shift_tree(const unsigned char *, const unsigned char *, unsigned char *, int);
1125void shift_tree_by(const unsigned char *, const unsigned char *, unsigned char *, const char *);
1126
1127/*
1128 * whitespace rules.
1129 * used by both diff and apply
1130 * last two digits are tab width
1131 */
1132#define WS_BLANK_AT_EOL 0100
1133#define WS_SPACE_BEFORE_TAB 0200
1134#define WS_INDENT_WITH_NON_TAB 0400
1135#define WS_CR_AT_EOL 01000
1136#define WS_BLANK_AT_EOF 02000
1137#define WS_TAB_IN_INDENT 04000
1138#define WS_TRAILING_SPACE (WS_BLANK_AT_EOL|WS_BLANK_AT_EOF)
1139#define WS_DEFAULT_RULE (WS_TRAILING_SPACE|WS_SPACE_BEFORE_TAB|8)
1140#define WS_TAB_WIDTH_MASK 077
1141extern unsigned whitespace_rule_cfg;
1142extern unsigned whitespace_rule(const char *);
1143extern unsigned parse_whitespace_rule(const char *);
1144extern unsigned ws_check(const char *line, int len, unsigned ws_rule);
1145extern void ws_check_emit(const char *line, int len, unsigned ws_rule, FILE *stream, const char *set, const char *reset, const char *ws);
1146extern char *whitespace_error_string(unsigned ws);
1147extern void ws_fix_copy(struct strbuf *, const char *, int, unsigned, int *);
1148extern int ws_blank_line(const char *line, int len, unsigned ws_rule);
1149#define ws_tab_width(rule) ((rule) & WS_TAB_WIDTH_MASK)
1150
1151/* ls-files */
1152int report_path_error(const char *ps_matched, const char **pathspec, int prefix_offset);
1153void overlay_tree_on_cache(const char *tree_name, const char *prefix);
1154
1155char *alias_lookup(const char *alias);
1156int split_cmdline(char *cmdline, const char ***argv);
1157/* Takes a negative value returned by split_cmdline */
1158const char *split_cmdline_strerror(int cmdline_errno);
1159
1160/* git.c */
1161struct startup_info {
1162 int have_repository;
1163 const char *prefix;
1164};
1165extern struct startup_info *startup_info;
1166
1167/* builtin/merge.c */
1168int checkout_fast_forward(const unsigned char *from, const unsigned char *to);
1169
1170#endif /* CACHE_H */