2dc4decbc9d2ef994789dbda6bea1b40bcc9fe80
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#include "convert.h"
10
11#include SHA1_HEADER
12#ifndef git_SHA_CTX
13#define git_SHA_CTX SHA_CTX
14#define git_SHA1_Init SHA1_Init
15#define git_SHA1_Update SHA1_Update
16#define git_SHA1_Final SHA1_Final
17#endif
18
19#include <zlib.h>
20typedef struct git_zstream {
21 z_stream z;
22 unsigned long avail_in;
23 unsigned long avail_out;
24 unsigned long total_in;
25 unsigned long total_out;
26 unsigned char *next_in;
27 unsigned char *next_out;
28} git_zstream;
29
30void git_inflate_init(git_zstream *);
31void git_inflate_init_gzip_only(git_zstream *);
32void git_inflate_end(git_zstream *);
33int git_inflate(git_zstream *, int flush);
34
35void git_deflate_init(git_zstream *, int level);
36void git_deflate_init_gzip(git_zstream *, int level);
37void git_deflate_end(git_zstream *);
38int git_deflate_abort(git_zstream *);
39int git_deflate_end_gently(git_zstream *);
40int git_deflate(git_zstream *, int flush);
41unsigned long git_deflate_bound(git_zstream *, unsigned long);
42
43#if defined(DT_UNKNOWN) && !defined(NO_D_TYPE_IN_DIRENT)
44#define DTYPE(de) ((de)->d_type)
45#else
46#undef DT_UNKNOWN
47#undef DT_DIR
48#undef DT_REG
49#undef DT_LNK
50#define DT_UNKNOWN 0
51#define DT_DIR 1
52#define DT_REG 2
53#define DT_LNK 3
54#define DTYPE(de) DT_UNKNOWN
55#endif
56
57/* unknown mode (impossible combination S_IFIFO|S_IFCHR) */
58#define S_IFINVALID 0030000
59
60/*
61 * A "directory link" is a link to another git directory.
62 *
63 * The value 0160000 is not normally a valid mode, and
64 * also just happens to be S_IFDIR + S_IFLNK
65 *
66 * NOTE! We *really* shouldn't depend on the S_IFxxx macros
67 * always having the same values everywhere. We should use
68 * our internal git values for these things, and then we can
69 * translate that to the OS-specific value. It just so
70 * happens that everybody shares the same bit representation
71 * in the UNIX world (and apparently wider too..)
72 */
73#define S_IFGITLINK 0160000
74#define S_ISGITLINK(m) (((m) & S_IFMT) == S_IFGITLINK)
75
76/*
77 * Intensive research over the course of many years has shown that
78 * port 9418 is totally unused by anything else. Or
79 *
80 * Your search - "port 9418" - did not match any documents.
81 *
82 * as www.google.com puts it.
83 *
84 * This port has been properly assigned for git use by IANA:
85 * git (Assigned-9418) [I06-050728-0001].
86 *
87 * git 9418/tcp git pack transfer service
88 * git 9418/udp git pack transfer service
89 *
90 * with Linus Torvalds <torvalds@osdl.org> as the point of
91 * contact. September 2005.
92 *
93 * See http://www.iana.org/assignments/port-numbers
94 */
95#define DEFAULT_GIT_PORT 9418
96
97/*
98 * Basic data structures for the directory cache
99 */
100
101#define CACHE_SIGNATURE 0x44495243 /* "DIRC" */
102struct cache_header {
103 unsigned int hdr_signature;
104 unsigned int hdr_version;
105 unsigned int hdr_entries;
106};
107
108#define INDEX_FORMAT_LB 2
109#define INDEX_FORMAT_UB 4
110
111/*
112 * The "cache_time" is just the low 32 bits of the
113 * time. It doesn't matter if it overflows - we only
114 * check it for equality in the 32 bits we save.
115 */
116struct cache_time {
117 unsigned int sec;
118 unsigned int nsec;
119};
120
121struct cache_entry {
122 struct cache_time ce_ctime;
123 struct cache_time ce_mtime;
124 unsigned int ce_dev;
125 unsigned int ce_ino;
126 unsigned int ce_mode;
127 unsigned int ce_uid;
128 unsigned int ce_gid;
129 unsigned int ce_size;
130 unsigned int ce_flags;
131 unsigned int ce_namelen;
132 unsigned char sha1[20];
133 struct cache_entry *next;
134 struct cache_entry *dir_next;
135 char name[FLEX_ARRAY]; /* more */
136};
137
138#define CE_STAGEMASK (0x3000)
139#define CE_EXTENDED (0x4000)
140#define CE_VALID (0x8000)
141#define CE_STAGESHIFT 12
142
143/*
144 * Range 0xFFFF0000 in ce_flags is divided into
145 * two parts: in-memory flags and on-disk ones.
146 * Flags in CE_EXTENDED_FLAGS will get saved on-disk
147 * if you want to save a new flag, add it in
148 * CE_EXTENDED_FLAGS
149 *
150 * In-memory only flags
151 */
152#define CE_UPDATE (1 << 16)
153#define CE_REMOVE (1 << 17)
154#define CE_UPTODATE (1 << 18)
155#define CE_ADDED (1 << 19)
156
157#define CE_HASHED (1 << 20)
158#define CE_UNHASHED (1 << 21)
159#define CE_WT_REMOVE (1 << 22) /* remove in work directory */
160#define CE_CONFLICTED (1 << 23)
161
162#define CE_UNPACKED (1 << 24)
163#define CE_NEW_SKIP_WORKTREE (1 << 25)
164
165/*
166 * Extended on-disk flags
167 */
168#define CE_INTENT_TO_ADD (1 << 29)
169#define CE_SKIP_WORKTREE (1 << 30)
170/* CE_EXTENDED2 is for future extension */
171#define CE_EXTENDED2 (1 << 31)
172
173#define CE_EXTENDED_FLAGS (CE_INTENT_TO_ADD | CE_SKIP_WORKTREE)
174
175/*
176 * Safeguard to avoid saving wrong flags:
177 * - CE_EXTENDED2 won't get saved until its semantic is known
178 * - Bits in 0x0000FFFF have been saved in ce_flags already
179 * - Bits in 0x003F0000 are currently in-memory flags
180 */
181#if CE_EXTENDED_FLAGS & 0x803FFFFF
182#error "CE_EXTENDED_FLAGS out of range"
183#endif
184
185/*
186 * Copy the sha1 and stat state of a cache entry from one to
187 * another. But we never change the name, or the hash state!
188 */
189#define CE_STATE_MASK (CE_HASHED | CE_UNHASHED)
190static inline void copy_cache_entry(struct cache_entry *dst, struct cache_entry *src)
191{
192 unsigned int state = dst->ce_flags & CE_STATE_MASK;
193
194 /* Don't copy hash chain and name */
195 memcpy(dst, src, offsetof(struct cache_entry, next));
196
197 /* Restore the hash state */
198 dst->ce_flags = (dst->ce_flags & ~CE_STATE_MASK) | state;
199}
200
201static inline unsigned create_ce_flags(unsigned stage)
202{
203 return (stage << CE_STAGESHIFT);
204}
205
206#define ce_namelen(ce) ((ce)->ce_namelen)
207#define ce_size(ce) cache_entry_size(ce_namelen(ce))
208#define ce_stage(ce) ((CE_STAGEMASK & (ce)->ce_flags) >> CE_STAGESHIFT)
209#define ce_uptodate(ce) ((ce)->ce_flags & CE_UPTODATE)
210#define ce_skip_worktree(ce) ((ce)->ce_flags & CE_SKIP_WORKTREE)
211#define ce_mark_uptodate(ce) ((ce)->ce_flags |= CE_UPTODATE)
212
213#define ce_permissions(mode) (((mode) & 0100) ? 0755 : 0644)
214static inline unsigned int create_ce_mode(unsigned int mode)
215{
216 if (S_ISLNK(mode))
217 return S_IFLNK;
218 if (S_ISDIR(mode) || S_ISGITLINK(mode))
219 return S_IFGITLINK;
220 return S_IFREG | ce_permissions(mode);
221}
222static inline unsigned int ce_mode_from_stat(struct cache_entry *ce, unsigned int mode)
223{
224 extern int trust_executable_bit, has_symlinks;
225 if (!has_symlinks && S_ISREG(mode) &&
226 ce && S_ISLNK(ce->ce_mode))
227 return ce->ce_mode;
228 if (!trust_executable_bit && S_ISREG(mode)) {
229 if (ce && S_ISREG(ce->ce_mode))
230 return ce->ce_mode;
231 return create_ce_mode(0666);
232 }
233 return create_ce_mode(mode);
234}
235static inline int ce_to_dtype(const struct cache_entry *ce)
236{
237 unsigned ce_mode = ntohl(ce->ce_mode);
238 if (S_ISREG(ce_mode))
239 return DT_REG;
240 else if (S_ISDIR(ce_mode) || S_ISGITLINK(ce_mode))
241 return DT_DIR;
242 else if (S_ISLNK(ce_mode))
243 return DT_LNK;
244 else
245 return DT_UNKNOWN;
246}
247static inline unsigned int canon_mode(unsigned int mode)
248{
249 if (S_ISREG(mode))
250 return S_IFREG | ce_permissions(mode);
251 if (S_ISLNK(mode))
252 return S_IFLNK;
253 if (S_ISDIR(mode))
254 return S_IFDIR;
255 return S_IFGITLINK;
256}
257
258#define cache_entry_size(len) (offsetof(struct cache_entry,name) + (len) + 1)
259
260struct index_state {
261 struct cache_entry **cache;
262 unsigned int version;
263 unsigned int cache_nr, cache_alloc, cache_changed;
264 struct string_list *resolve_undo;
265 struct cache_tree *cache_tree;
266 struct cache_time timestamp;
267 unsigned name_hash_initialized : 1,
268 initialized : 1;
269 struct hash_table name_hash;
270};
271
272extern struct index_state the_index;
273
274/* Name hashing */
275extern void add_name_hash(struct index_state *istate, struct cache_entry *ce);
276/*
277 * We don't actually *remove* it, we can just mark it invalid so that
278 * we won't find it in lookups.
279 *
280 * Not only would we have to search the lists (simple enough), but
281 * we'd also have to rehash other hash buckets in case this makes the
282 * hash bucket empty (common). So it's much better to just mark
283 * it.
284 */
285static inline void remove_name_hash(struct cache_entry *ce)
286{
287 ce->ce_flags |= CE_UNHASHED;
288}
289
290
291#ifndef NO_THE_INDEX_COMPATIBILITY_MACROS
292#define active_cache (the_index.cache)
293#define active_nr (the_index.cache_nr)
294#define active_alloc (the_index.cache_alloc)
295#define active_cache_changed (the_index.cache_changed)
296#define active_cache_tree (the_index.cache_tree)
297
298#define read_cache() read_index(&the_index)
299#define read_cache_from(path) read_index_from(&the_index, (path))
300#define read_cache_preload(pathspec) read_index_preload(&the_index, (pathspec))
301#define is_cache_unborn() is_index_unborn(&the_index)
302#define read_cache_unmerged() read_index_unmerged(&the_index)
303#define write_cache(newfd, cache, entries) write_index(&the_index, (newfd))
304#define discard_cache() discard_index(&the_index)
305#define unmerged_cache() unmerged_index(&the_index)
306#define cache_name_pos(name, namelen) index_name_pos(&the_index,(name),(namelen))
307#define add_cache_entry(ce, option) add_index_entry(&the_index, (ce), (option))
308#define rename_cache_entry_at(pos, new_name) rename_index_entry_at(&the_index, (pos), (new_name))
309#define remove_cache_entry_at(pos) remove_index_entry_at(&the_index, (pos))
310#define remove_file_from_cache(path) remove_file_from_index(&the_index, (path))
311#define add_to_cache(path, st, flags) add_to_index(&the_index, (path), (st), (flags))
312#define add_file_to_cache(path, flags) add_file_to_index(&the_index, (path), (flags))
313#define refresh_cache(flags) refresh_index(&the_index, (flags), NULL, NULL, NULL)
314#define ce_match_stat(ce, st, options) ie_match_stat(&the_index, (ce), (st), (options))
315#define ce_modified(ce, st, options) ie_modified(&the_index, (ce), (st), (options))
316#define cache_name_exists(name, namelen, igncase) index_name_exists(&the_index, (name), (namelen), (igncase))
317#define cache_name_is_other(name, namelen) index_name_is_other(&the_index, (name), (namelen))
318#define resolve_undo_clear() resolve_undo_clear_index(&the_index)
319#define unmerge_cache_entry_at(at) unmerge_index_entry_at(&the_index, at)
320#define unmerge_cache(pathspec) unmerge_index(&the_index, pathspec)
321#endif
322
323enum object_type {
324 OBJ_BAD = -1,
325 OBJ_NONE = 0,
326 OBJ_COMMIT = 1,
327 OBJ_TREE = 2,
328 OBJ_BLOB = 3,
329 OBJ_TAG = 4,
330 /* 5 for future expansion */
331 OBJ_OFS_DELTA = 6,
332 OBJ_REF_DELTA = 7,
333 OBJ_ANY,
334 OBJ_MAX
335};
336
337static inline enum object_type object_type(unsigned int mode)
338{
339 return S_ISDIR(mode) ? OBJ_TREE :
340 S_ISGITLINK(mode) ? OBJ_COMMIT :
341 OBJ_BLOB;
342}
343
344#define GIT_DIR_ENVIRONMENT "GIT_DIR"
345#define GIT_NAMESPACE_ENVIRONMENT "GIT_NAMESPACE"
346#define GIT_WORK_TREE_ENVIRONMENT "GIT_WORK_TREE"
347#define DEFAULT_GIT_DIR_ENVIRONMENT ".git"
348#define DB_ENVIRONMENT "GIT_OBJECT_DIRECTORY"
349#define INDEX_ENVIRONMENT "GIT_INDEX_FILE"
350#define GRAFT_ENVIRONMENT "GIT_GRAFT_FILE"
351#define TEMPLATE_DIR_ENVIRONMENT "GIT_TEMPLATE_DIR"
352#define CONFIG_ENVIRONMENT "GIT_CONFIG"
353#define CONFIG_DATA_ENVIRONMENT "GIT_CONFIG_PARAMETERS"
354#define EXEC_PATH_ENVIRONMENT "GIT_EXEC_PATH"
355#define CEILING_DIRECTORIES_ENVIRONMENT "GIT_CEILING_DIRECTORIES"
356#define NO_REPLACE_OBJECTS_ENVIRONMENT "GIT_NO_REPLACE_OBJECTS"
357#define GITATTRIBUTES_FILE ".gitattributes"
358#define INFOATTRIBUTES_FILE "info/attributes"
359#define ATTRIBUTE_MACRO_PREFIX "[attr]"
360#define GIT_NOTES_REF_ENVIRONMENT "GIT_NOTES_REF"
361#define GIT_NOTES_DEFAULT_REF "refs/notes/commits"
362#define GIT_NOTES_DISPLAY_REF_ENVIRONMENT "GIT_NOTES_DISPLAY_REF"
363#define GIT_NOTES_REWRITE_REF_ENVIRONMENT "GIT_NOTES_REWRITE_REF"
364#define GIT_NOTES_REWRITE_MODE_ENVIRONMENT "GIT_NOTES_REWRITE_MODE"
365
366/*
367 * Repository-local GIT_* environment variables
368 * The array is NULL-terminated to simplify its usage in contexts such
369 * environment creation or simple walk of the list.
370 * The number of non-NULL entries is available as a macro.
371 */
372#define LOCAL_REPO_ENV_SIZE 9
373extern const char *const local_repo_env[LOCAL_REPO_ENV_SIZE + 1];
374
375extern int is_bare_repository_cfg;
376extern int is_bare_repository(void);
377extern int is_inside_git_dir(void);
378extern char *git_work_tree_cfg;
379extern int is_inside_work_tree(void);
380extern int have_git_dir(void);
381extern const char *get_git_dir(void);
382extern int is_git_directory(const char *path);
383extern char *get_object_directory(void);
384extern char *get_index_file(void);
385extern char *get_graft_file(void);
386extern int set_git_dir(const char *path);
387extern const char *get_git_namespace(void);
388extern const char *strip_namespace(const char *namespaced_ref);
389extern const char *get_git_work_tree(void);
390extern const char *read_gitfile(const char *path);
391extern const char *resolve_gitdir(const char *suspect);
392extern void set_git_work_tree(const char *tree);
393
394#define ALTERNATE_DB_ENVIRONMENT "GIT_ALTERNATE_OBJECT_DIRECTORIES"
395
396extern const char **get_pathspec(const char *prefix, const char **pathspec);
397extern void setup_work_tree(void);
398extern const char *setup_git_directory_gently(int *);
399extern const char *setup_git_directory(void);
400extern char *prefix_path(const char *prefix, int len, const char *path);
401extern const char *prefix_filename(const char *prefix, int len, const char *path);
402extern int check_filename(const char *prefix, const char *name);
403extern void verify_filename(const char *prefix,
404 const char *name,
405 int diagnose_misspelt_rev);
406extern void verify_non_filename(const char *prefix, const char *name);
407extern int path_inside_repo(const char *prefix, const char *path);
408
409#define INIT_DB_QUIET 0x0001
410
411extern int set_git_dir_init(const char *git_dir, const char *real_git_dir, int);
412extern int init_db(const char *template_dir, unsigned int flags);
413
414#define alloc_nr(x) (((x)+16)*3/2)
415
416/*
417 * Realloc the buffer pointed at by variable 'x' so that it can hold
418 * at least 'nr' entries; the number of entries currently allocated
419 * is 'alloc', using the standard growing factor alloc_nr() macro.
420 *
421 * DO NOT USE any expression with side-effect for 'x', 'nr', or 'alloc'.
422 */
423#define ALLOC_GROW(x, nr, alloc) \
424 do { \
425 if ((nr) > alloc) { \
426 if (alloc_nr(alloc) < (nr)) \
427 alloc = (nr); \
428 else \
429 alloc = alloc_nr(alloc); \
430 x = xrealloc((x), alloc * sizeof(*(x))); \
431 } \
432 } while (0)
433
434/* Initialize and use the cache information */
435extern int read_index(struct index_state *);
436extern int read_index_preload(struct index_state *, const char **pathspec);
437extern int read_index_from(struct index_state *, const char *path);
438extern int is_index_unborn(struct index_state *);
439extern int read_index_unmerged(struct index_state *);
440extern int write_index(struct index_state *, int newfd);
441extern int discard_index(struct index_state *);
442extern int unmerged_index(const struct index_state *);
443extern int verify_path(const char *path);
444extern struct cache_entry *index_name_exists(struct index_state *istate, const char *name, int namelen, int igncase);
445extern int index_name_pos(const struct index_state *, const char *name, int namelen);
446#define ADD_CACHE_OK_TO_ADD 1 /* Ok to add */
447#define ADD_CACHE_OK_TO_REPLACE 2 /* Ok to replace file/directory */
448#define ADD_CACHE_SKIP_DFCHECK 4 /* Ok to skip DF conflict checks */
449#define ADD_CACHE_JUST_APPEND 8 /* Append only; tree.c::read_tree() */
450#define ADD_CACHE_NEW_ONLY 16 /* Do not replace existing ones */
451extern int add_index_entry(struct index_state *, struct cache_entry *ce, int option);
452extern void rename_index_entry_at(struct index_state *, int pos, const char *new_name);
453extern int remove_index_entry_at(struct index_state *, int pos);
454extern void remove_marked_cache_entries(struct index_state *istate);
455extern int remove_file_from_index(struct index_state *, const char *path);
456#define ADD_CACHE_VERBOSE 1
457#define ADD_CACHE_PRETEND 2
458#define ADD_CACHE_IGNORE_ERRORS 4
459#define ADD_CACHE_IGNORE_REMOVAL 8
460#define ADD_CACHE_INTENT 16
461extern int add_to_index(struct index_state *, const char *path, struct stat *, int flags);
462extern int add_file_to_index(struct index_state *, const char *path, int flags);
463extern struct cache_entry *make_cache_entry(unsigned int mode, const unsigned char *sha1, const char *path, int stage, int refresh);
464extern int ce_same_name(struct cache_entry *a, struct cache_entry *b);
465extern int index_name_is_other(const struct index_state *, const char *, int);
466
467/* do stat comparison even if CE_VALID is true */
468#define CE_MATCH_IGNORE_VALID 01
469/* do not check the contents but report dirty on racily-clean entries */
470#define CE_MATCH_RACY_IS_DIRTY 02
471/* do stat comparison even if CE_SKIP_WORKTREE is true */
472#define CE_MATCH_IGNORE_SKIP_WORKTREE 04
473extern int ie_match_stat(const struct index_state *, struct cache_entry *, struct stat *, unsigned int);
474extern int ie_modified(const struct index_state *, struct cache_entry *, struct stat *, unsigned int);
475
476struct pathspec {
477 const char **raw; /* get_pathspec() result, not freed by free_pathspec() */
478 int nr;
479 unsigned int has_wildcard:1;
480 unsigned int recursive:1;
481 int max_depth;
482 struct pathspec_item {
483 const char *match;
484 int len;
485 unsigned int use_wildcard:1;
486 } *items;
487};
488
489extern int init_pathspec(struct pathspec *, const char **);
490extern void free_pathspec(struct pathspec *);
491extern int ce_path_match(const struct cache_entry *ce, const struct pathspec *pathspec);
492
493#define HASH_WRITE_OBJECT 1
494#define HASH_FORMAT_CHECK 2
495extern int index_fd(unsigned char *sha1, int fd, struct stat *st, enum object_type type, const char *path, unsigned flags);
496extern int index_path(unsigned char *sha1, const char *path, struct stat *st, unsigned flags);
497extern void fill_stat_cache_info(struct cache_entry *ce, struct stat *st);
498
499#define REFRESH_REALLY 0x0001 /* ignore_valid */
500#define REFRESH_UNMERGED 0x0002 /* allow unmerged */
501#define REFRESH_QUIET 0x0004 /* be quiet about it */
502#define REFRESH_IGNORE_MISSING 0x0008 /* ignore non-existent */
503#define REFRESH_IGNORE_SUBMODULES 0x0010 /* ignore submodules */
504#define REFRESH_IN_PORCELAIN 0x0020 /* user friendly output, not "needs update" */
505extern int refresh_index(struct index_state *, unsigned int flags, const char **pathspec, char *seen, const char *header_msg);
506
507struct lock_file {
508 struct lock_file *next;
509 int fd;
510 pid_t owner;
511 char on_list;
512 char filename[PATH_MAX];
513};
514#define LOCK_DIE_ON_ERROR 1
515#define LOCK_NODEREF 2
516extern int unable_to_lock_error(const char *path, int err);
517extern NORETURN void unable_to_lock_index_die(const char *path, int err);
518extern int hold_lock_file_for_update(struct lock_file *, const char *path, int);
519extern int hold_lock_file_for_append(struct lock_file *, const char *path, int);
520extern int commit_lock_file(struct lock_file *);
521extern void update_index_if_able(struct index_state *, struct lock_file *);
522
523extern int hold_locked_index(struct lock_file *, int);
524extern int commit_locked_index(struct lock_file *);
525extern void set_alternate_index_output(const char *);
526extern int close_lock_file(struct lock_file *);
527extern void rollback_lock_file(struct lock_file *);
528extern int delete_ref(const char *, const unsigned char *sha1, int delopt);
529
530/* Environment bits from configuration mechanism */
531extern int trust_executable_bit;
532extern int trust_ctime;
533extern int quote_path_fully;
534extern int has_symlinks;
535extern int minimum_abbrev, default_abbrev;
536extern int ignore_case;
537extern int assume_unchanged;
538extern int prefer_symlink_refs;
539extern int log_all_ref_updates;
540extern int warn_ambiguous_refs;
541extern int shared_repository;
542extern const char *apply_default_whitespace;
543extern const char *apply_default_ignorewhitespace;
544extern const char *git_attributes_file;
545extern int zlib_compression_level;
546extern int core_compression_level;
547extern int core_compression_seen;
548extern size_t packed_git_window_size;
549extern size_t packed_git_limit;
550extern size_t delta_base_cache_limit;
551extern unsigned long big_file_threshold;
552extern unsigned long pack_size_limit_cfg;
553extern int read_replace_refs;
554extern int fsync_object_files;
555extern int core_preload_index;
556extern int core_apply_sparse_checkout;
557extern int precomposed_unicode;
558
559enum branch_track {
560 BRANCH_TRACK_UNSPECIFIED = -1,
561 BRANCH_TRACK_NEVER = 0,
562 BRANCH_TRACK_REMOTE,
563 BRANCH_TRACK_ALWAYS,
564 BRANCH_TRACK_EXPLICIT,
565 BRANCH_TRACK_OVERRIDE
566};
567
568enum rebase_setup_type {
569 AUTOREBASE_NEVER = 0,
570 AUTOREBASE_LOCAL,
571 AUTOREBASE_REMOTE,
572 AUTOREBASE_ALWAYS
573};
574
575enum push_default_type {
576 PUSH_DEFAULT_NOTHING = 0,
577 PUSH_DEFAULT_MATCHING,
578 PUSH_DEFAULT_SIMPLE,
579 PUSH_DEFAULT_UPSTREAM,
580 PUSH_DEFAULT_CURRENT,
581 PUSH_DEFAULT_UNSPECIFIED
582};
583
584extern enum branch_track git_branch_track;
585extern enum rebase_setup_type autorebase;
586extern enum push_default_type push_default;
587
588enum object_creation_mode {
589 OBJECT_CREATION_USES_HARDLINKS = 0,
590 OBJECT_CREATION_USES_RENAMES = 1
591};
592
593extern enum object_creation_mode object_creation_mode;
594
595extern char *notes_ref_name;
596
597extern int grafts_replace_parents;
598
599#define GIT_REPO_VERSION 0
600extern int repository_format_version;
601extern int check_repository_format(void);
602
603#define MTIME_CHANGED 0x0001
604#define CTIME_CHANGED 0x0002
605#define OWNER_CHANGED 0x0004
606#define MODE_CHANGED 0x0008
607#define INODE_CHANGED 0x0010
608#define DATA_CHANGED 0x0020
609#define TYPE_CHANGED 0x0040
610
611extern char *mksnpath(char *buf, size_t n, const char *fmt, ...)
612 __attribute__((format (printf, 3, 4)));
613extern char *git_snpath(char *buf, size_t n, const char *fmt, ...)
614 __attribute__((format (printf, 3, 4)));
615extern char *git_pathdup(const char *fmt, ...)
616 __attribute__((format (printf, 1, 2)));
617extern char *mkpathdup(const char *fmt, ...)
618 __attribute__((format (printf, 1, 2)));
619
620/* Return a statically allocated filename matching the sha1 signature */
621extern char *mkpath(const char *fmt, ...) __attribute__((format (printf, 1, 2)));
622extern char *git_path(const char *fmt, ...) __attribute__((format (printf, 1, 2)));
623extern char *git_path_submodule(const char *path, const char *fmt, ...)
624 __attribute__((format (printf, 2, 3)));
625
626extern char *sha1_file_name(const unsigned char *sha1);
627extern char *sha1_pack_name(const unsigned char *sha1);
628extern char *sha1_pack_index_name(const unsigned char *sha1);
629extern const char *find_unique_abbrev(const unsigned char *sha1, int);
630extern const unsigned char null_sha1[20];
631
632static inline int hashcmp(const unsigned char *sha1, const unsigned char *sha2)
633{
634 int i;
635
636 for (i = 0; i < 20; i++, sha1++, sha2++) {
637 if (*sha1 != *sha2)
638 return *sha1 - *sha2;
639 }
640
641 return 0;
642}
643
644static inline int is_null_sha1(const unsigned char *sha1)
645{
646 return !hashcmp(sha1, null_sha1);
647}
648
649static inline void hashcpy(unsigned char *sha_dst, const unsigned char *sha_src)
650{
651 memcpy(sha_dst, sha_src, 20);
652}
653static inline void hashclr(unsigned char *hash)
654{
655 memset(hash, 0, 20);
656}
657
658#define EMPTY_TREE_SHA1_HEX \
659 "4b825dc642cb6eb9a060e54bf8d69288fbee4904"
660#define EMPTY_TREE_SHA1_BIN_LITERAL \
661 "\x4b\x82\x5d\xc6\x42\xcb\x6e\xb9\xa0\x60" \
662 "\xe5\x4b\xf8\xd6\x92\x88\xfb\xee\x49\x04"
663#define EMPTY_TREE_SHA1_BIN \
664 ((const unsigned char *) EMPTY_TREE_SHA1_BIN_LITERAL)
665
666#define EMPTY_BLOB_SHA1_HEX \
667 "e69de29bb2d1d6434b8b29ae775ad8c2e48c5391"
668#define EMPTY_BLOB_SHA1_BIN_LITERAL \
669 "\xe6\x9d\xe2\x9b\xb2\xd1\xd6\x43\x4b\x8b" \
670 "\x29\xae\x77\x5a\xd8\xc2\xe4\x8c\x53\x91"
671#define EMPTY_BLOB_SHA1_BIN \
672 ((const unsigned char *) EMPTY_BLOB_SHA1_BIN_LITERAL)
673
674static inline int is_empty_blob_sha1(const unsigned char *sha1)
675{
676 return !hashcmp(sha1, EMPTY_BLOB_SHA1_BIN);
677}
678
679int git_mkstemp(char *path, size_t n, const char *template);
680
681int git_mkstemps(char *path, size_t n, const char *template, int suffix_len);
682
683/* set default permissions by passing mode arguments to open(2) */
684int git_mkstemps_mode(char *pattern, int suffix_len, int mode);
685int git_mkstemp_mode(char *pattern, int mode);
686
687/*
688 * NOTE NOTE NOTE!!
689 *
690 * PERM_UMASK, OLD_PERM_GROUP and OLD_PERM_EVERYBODY enumerations must
691 * not be changed. Old repositories have core.sharedrepository written in
692 * numeric format, and therefore these values are preserved for compatibility
693 * reasons.
694 */
695enum sharedrepo {
696 PERM_UMASK = 0,
697 OLD_PERM_GROUP = 1,
698 OLD_PERM_EVERYBODY = 2,
699 PERM_GROUP = 0660,
700 PERM_EVERYBODY = 0664
701};
702int git_config_perm(const char *var, const char *value);
703int set_shared_perm(const char *path, int mode);
704#define adjust_shared_perm(path) set_shared_perm((path), 0)
705int safe_create_leading_directories(char *path);
706int safe_create_leading_directories_const(const char *path);
707int mkdir_in_gitdir(const char *path);
708extern void home_config_paths(char **global, char **xdg, char *file);
709extern char *expand_user_path(const char *path);
710const char *enter_repo(const char *path, int strict);
711static inline int is_absolute_path(const char *path)
712{
713 return is_dir_sep(path[0]) || has_dos_drive_prefix(path);
714}
715int is_directory(const char *);
716const char *real_path(const char *path);
717const char *absolute_path(const char *path);
718const char *relative_path(const char *abs, const char *base);
719int normalize_path_copy(char *dst, const char *src);
720int longest_ancestor_length(const char *path, const char *prefix_list);
721char *strip_path_suffix(const char *path, const char *suffix);
722int daemon_avoid_alias(const char *path);
723int offset_1st_component(const char *path);
724
725/* object replacement */
726#define READ_SHA1_FILE_REPLACE 1
727extern void *read_sha1_file_extended(const unsigned char *sha1, enum object_type *type, unsigned long *size, unsigned flag);
728static inline void *read_sha1_file(const unsigned char *sha1, enum object_type *type, unsigned long *size)
729{
730 return read_sha1_file_extended(sha1, type, size, READ_SHA1_FILE_REPLACE);
731}
732extern const unsigned char *do_lookup_replace_object(const unsigned char *sha1);
733static inline const unsigned char *lookup_replace_object(const unsigned char *sha1)
734{
735 if (!read_replace_refs)
736 return sha1;
737 return do_lookup_replace_object(sha1);
738}
739
740/* Read and unpack a sha1 file into memory, write memory to a sha1 file */
741extern int sha1_object_info(const unsigned char *, unsigned long *);
742extern int hash_sha1_file(const void *buf, unsigned long len, const char *type, unsigned char *sha1);
743extern int write_sha1_file(const void *buf, unsigned long len, const char *type, unsigned char *return_sha1);
744extern int pretend_sha1_file(void *, unsigned long, enum object_type, unsigned char *);
745extern int force_object_loose(const unsigned char *sha1, time_t mtime);
746extern void *map_sha1_file(const unsigned char *sha1, unsigned long *size);
747extern int unpack_sha1_header(git_zstream *stream, unsigned char *map, unsigned long mapsize, void *buffer, unsigned long bufsiz);
748extern int parse_sha1_header(const char *hdr, unsigned long *sizep);
749
750/* global flag to enable extra checks when accessing packed objects */
751extern int do_check_packed_object_crc;
752
753/* for development: log offset of pack access */
754extern const char *log_pack_access;
755
756extern int check_sha1_signature(const unsigned char *sha1, void *buf, unsigned long size, const char *type);
757
758extern int move_temp_to_file(const char *tmpfile, const char *filename);
759
760extern int has_sha1_pack(const unsigned char *sha1);
761extern int has_sha1_file(const unsigned char *sha1);
762extern int has_loose_object_nonlocal(const unsigned char *sha1);
763
764extern int has_pack_index(const unsigned char *sha1);
765
766extern void assert_sha1_type(const unsigned char *sha1, enum object_type expect);
767
768extern const signed char hexval_table[256];
769static inline unsigned int hexval(unsigned char c)
770{
771 return hexval_table[c];
772}
773
774/* Convert to/from hex/sha1 representation */
775#define MINIMUM_ABBREV minimum_abbrev
776#define DEFAULT_ABBREV default_abbrev
777
778struct object_context {
779 unsigned char tree[20];
780 char path[PATH_MAX];
781 unsigned mode;
782};
783
784#define GET_SHA1_QUIETLY 01
785#define GET_SHA1_COMMIT 02
786#define GET_SHA1_COMMITTISH 04
787#define GET_SHA1_TREE 010
788#define GET_SHA1_TREEISH 020
789#define GET_SHA1_BLOB 040
790#define GET_SHA1_ONLY_TO_DIE 04000
791
792extern int get_sha1(const char *str, unsigned char *sha1);
793extern int get_sha1_commit(const char *str, unsigned char *sha1);
794extern int get_sha1_committish(const char *str, unsigned char *sha1);
795extern int get_sha1_tree(const char *str, unsigned char *sha1);
796extern int get_sha1_treeish(const char *str, unsigned char *sha1);
797extern int get_sha1_blob(const char *str, unsigned char *sha1);
798extern void maybe_die_on_misspelt_object_name(const char *name, const char *prefix);
799extern int get_sha1_with_context(const char *str, unsigned flags, unsigned char *sha1, struct object_context *orc);
800
801typedef int each_abbrev_fn(const unsigned char *sha1, void *);
802extern int for_each_abbrev(const char *prefix, each_abbrev_fn, void *);
803
804/*
805 * Try to read a SHA1 in hexadecimal format from the 40 characters
806 * starting at hex. Write the 20-byte result to sha1 in binary form.
807 * Return 0 on success. Reading stops if a NUL is encountered in the
808 * input, so it is safe to pass this function an arbitrary
809 * null-terminated string.
810 */
811extern int get_sha1_hex(const char *hex, unsigned char *sha1);
812
813extern char *sha1_to_hex(const unsigned char *sha1); /* static buffer result! */
814extern int read_ref_full(const char *refname, unsigned char *sha1,
815 int reading, int *flags);
816extern int read_ref(const char *refname, unsigned char *sha1);
817
818/*
819 * Resolve a reference, recursively following symbolic refererences.
820 *
821 * Store the referred-to object's name in sha1 and return the name of
822 * the non-symbolic reference that ultimately pointed at it. The
823 * return value, if not NULL, is a pointer into either a static buffer
824 * or the input ref.
825 *
826 * If the reference cannot be resolved to an object, the behavior
827 * depends on the "reading" argument:
828 *
829 * - If reading is set, return NULL.
830 *
831 * - If reading is not set, clear sha1 and return the name of the last
832 * reference name in the chain, which will either be a non-symbolic
833 * reference or an undefined reference. If this is a prelude to
834 * "writing" to the ref, the return value is the name of the ref
835 * that will actually be created or changed.
836 *
837 * If flag is non-NULL, set the value that it points to the
838 * combination of REF_ISPACKED (if the reference was found among the
839 * packed references) and REF_ISSYMREF (if the initial reference was a
840 * symbolic reference).
841 *
842 * If ref is not a properly-formatted, normalized reference, return
843 * NULL. If more than MAXDEPTH recursive symbolic lookups are needed,
844 * give up and return NULL.
845 *
846 * errno is sometimes set on errors, but not always.
847 */
848extern const char *resolve_ref_unsafe(const char *ref, unsigned char *sha1, int reading, int *flag);
849extern char *resolve_refdup(const char *ref, unsigned char *sha1, int reading, int *flag);
850
851extern int dwim_ref(const char *str, int len, unsigned char *sha1, char **ref);
852extern int dwim_log(const char *str, int len, unsigned char *sha1, char **ref);
853extern int interpret_branch_name(const char *str, struct strbuf *);
854extern int get_sha1_mb(const char *str, unsigned char *sha1);
855
856extern int refname_match(const char *abbrev_name, const char *full_name, const char **rules);
857extern const char *ref_rev_parse_rules[];
858#define ref_fetch_rules ref_rev_parse_rules
859
860extern int create_symref(const char *ref, const char *refs_heads_master, const char *logmsg);
861extern int validate_headref(const char *ref);
862
863extern int base_name_compare(const char *name1, int len1, int mode1, const char *name2, int len2, int mode2);
864extern int df_name_compare(const char *name1, int len1, int mode1, const char *name2, int len2, int mode2);
865extern int cache_name_compare(const char *name1, int len1, const char *name2, int len2);
866extern int cache_name_stage_compare(const char *name1, int len1, int stage1, const char *name2, int len2, int stage2);
867
868extern void *read_object_with_reference(const unsigned char *sha1,
869 const char *required_type,
870 unsigned long *size,
871 unsigned char *sha1_ret);
872
873extern struct object *peel_to_type(const char *name, int namelen,
874 struct object *o, enum object_type);
875
876enum date_mode {
877 DATE_NORMAL = 0,
878 DATE_RELATIVE,
879 DATE_SHORT,
880 DATE_LOCAL,
881 DATE_ISO8601,
882 DATE_RFC2822,
883 DATE_RAW
884};
885
886const char *show_date(unsigned long time, int timezone, enum date_mode mode);
887void show_date_relative(unsigned long time, int tz, const struct timeval *now,
888 struct strbuf *timebuf);
889int parse_date(const char *date, char *buf, int bufsize);
890int parse_date_basic(const char *date, unsigned long *timestamp, int *offset);
891void datestamp(char *buf, int bufsize);
892#define approxidate(s) approxidate_careful((s), NULL)
893unsigned long approxidate_careful(const char *, int *);
894unsigned long approxidate_relative(const char *date, const struct timeval *now);
895enum date_mode parse_date_format(const char *format);
896
897#define IDENT_STRICT 1
898#define IDENT_NO_DATE 2
899#define IDENT_NO_NAME 4
900extern const char *git_author_info(int);
901extern const char *git_committer_info(int);
902extern const char *fmt_ident(const char *name, const char *email, const char *date_str, int);
903extern const char *fmt_name(const char *name, const char *email);
904extern const char *ident_default_email(void);
905extern const char *git_editor(void);
906extern const char *git_pager(int stdout_is_tty);
907extern int git_ident_config(const char *, const char *, void *);
908
909struct ident_split {
910 const char *name_begin;
911 const char *name_end;
912 const char *mail_begin;
913 const char *mail_end;
914 const char *date_begin;
915 const char *date_end;
916 const char *tz_begin;
917 const char *tz_end;
918};
919/*
920 * Signals an success with 0, but time part of the result may be NULL
921 * if the input lacks timestamp and zone
922 */
923extern int split_ident_line(struct ident_split *, const char *, int);
924
925struct checkout {
926 const char *base_dir;
927 int base_dir_len;
928 unsigned force:1,
929 quiet:1,
930 not_new:1,
931 refresh_cache:1;
932};
933
934extern int checkout_entry(struct cache_entry *ce, const struct checkout *state, char *topath);
935
936struct cache_def {
937 char path[PATH_MAX + 1];
938 int len;
939 int flags;
940 int track_flags;
941 int prefix_len_stat_func;
942};
943
944extern int has_symlink_leading_path(const char *name, int len);
945extern int threaded_has_symlink_leading_path(struct cache_def *, const char *, int);
946extern int check_leading_path(const char *name, int len);
947extern int has_dirs_only_path(const char *name, int len, int prefix_len);
948extern void schedule_dir_for_removal(const char *name, int len);
949extern void remove_scheduled_dirs(void);
950
951extern struct alternate_object_database {
952 struct alternate_object_database *next;
953 char *name;
954 char base[FLEX_ARRAY]; /* more */
955} *alt_odb_list;
956extern void prepare_alt_odb(void);
957extern void read_info_alternates(const char * relative_base, int depth);
958extern void add_to_alternates_file(const char *reference);
959typedef int alt_odb_fn(struct alternate_object_database *, void *);
960extern void foreach_alt_odb(alt_odb_fn, void*);
961
962struct pack_window {
963 struct pack_window *next;
964 unsigned char *base;
965 off_t offset;
966 size_t len;
967 unsigned int last_used;
968 unsigned int inuse_cnt;
969};
970
971extern struct packed_git {
972 struct packed_git *next;
973 struct pack_window *windows;
974 off_t pack_size;
975 const void *index_data;
976 size_t index_size;
977 uint32_t num_objects;
978 uint32_t num_bad_objects;
979 unsigned char *bad_object_sha1;
980 int index_version;
981 time_t mtime;
982 int pack_fd;
983 unsigned pack_local:1,
984 pack_keep:1,
985 do_not_close:1;
986 unsigned char sha1[20];
987 /* something like ".git/objects/pack/xxxxx.pack" */
988 char pack_name[FLEX_ARRAY]; /* more */
989} *packed_git;
990
991struct pack_entry {
992 off_t offset;
993 unsigned char sha1[20];
994 struct packed_git *p;
995};
996
997struct ref {
998 struct ref *next;
999 unsigned char old_sha1[20];
1000 unsigned char new_sha1[20];
1001 char *symref;
1002 unsigned int force:1,
1003 merge:1,
1004 nonfastforward:1,
1005 deletion:1;
1006 enum {
1007 REF_STATUS_NONE = 0,
1008 REF_STATUS_OK,
1009 REF_STATUS_REJECT_NONFASTFORWARD,
1010 REF_STATUS_REJECT_NODELETE,
1011 REF_STATUS_UPTODATE,
1012 REF_STATUS_REMOTE_REJECT,
1013 REF_STATUS_EXPECTING_REPORT
1014 } status;
1015 char *remote_status;
1016 struct ref *peer_ref; /* when renaming */
1017 char name[FLEX_ARRAY]; /* more */
1018};
1019
1020#define REF_NORMAL (1u << 0)
1021#define REF_HEADS (1u << 1)
1022#define REF_TAGS (1u << 2)
1023
1024extern struct ref *find_ref_by_name(const struct ref *list, const char *name);
1025
1026#define CONNECT_VERBOSE (1u << 0)
1027extern struct child_process *git_connect(int fd[2], const char *url, const char *prog, int flags);
1028extern int finish_connect(struct child_process *conn);
1029extern int git_connection_is_socket(struct child_process *conn);
1030struct extra_have_objects {
1031 int nr, alloc;
1032 unsigned char (*array)[20];
1033};
1034extern struct ref **get_remote_heads(int in, struct ref **list, unsigned int flags, struct extra_have_objects *);
1035extern int server_supports(const char *feature);
1036extern int parse_feature_request(const char *features, const char *feature);
1037extern const char *server_feature_value(const char *feature, int *len_ret);
1038extern const char *parse_feature_value(const char *feature_list, const char *feature, int *len_ret);
1039
1040extern struct packed_git *parse_pack_index(unsigned char *sha1, const char *idx_path);
1041
1042extern void prepare_packed_git(void);
1043extern void reprepare_packed_git(void);
1044extern void install_packed_git(struct packed_git *pack);
1045
1046extern struct packed_git *find_sha1_pack(const unsigned char *sha1,
1047 struct packed_git *packs);
1048
1049extern void pack_report(void);
1050extern int open_pack_index(struct packed_git *);
1051extern void close_pack_index(struct packed_git *);
1052extern unsigned char *use_pack(struct packed_git *, struct pack_window **, off_t, unsigned long *);
1053extern void close_pack_windows(struct packed_git *);
1054extern void unuse_pack(struct pack_window **);
1055extern void free_pack_by_name(const char *);
1056extern void clear_delta_base_cache(void);
1057extern struct packed_git *add_packed_git(const char *, int, int);
1058extern const unsigned char *nth_packed_object_sha1(struct packed_git *, uint32_t);
1059extern off_t nth_packed_object_offset(const struct packed_git *, uint32_t);
1060extern off_t find_pack_entry_one(const unsigned char *, struct packed_git *);
1061extern int is_pack_valid(struct packed_git *);
1062extern void *unpack_entry(struct packed_git *, off_t, enum object_type *, unsigned long *);
1063extern unsigned long unpack_object_header_buffer(const unsigned char *buf, unsigned long len, enum object_type *type, unsigned long *sizep);
1064extern unsigned long get_size_from_delta(struct packed_git *, struct pack_window **, off_t);
1065extern int unpack_object_header(struct packed_git *, struct pack_window **, off_t *, unsigned long *);
1066
1067struct object_info {
1068 /* Request */
1069 unsigned long *sizep;
1070
1071 /* Response */
1072 enum {
1073 OI_CACHED,
1074 OI_LOOSE,
1075 OI_PACKED,
1076 OI_DBCACHED
1077 } whence;
1078 union {
1079 /*
1080 * struct {
1081 * ... Nothing to expose in this case
1082 * } cached;
1083 * struct {
1084 * ... Nothing to expose in this case
1085 * } loose;
1086 */
1087 struct {
1088 struct packed_git *pack;
1089 off_t offset;
1090 unsigned int is_delta;
1091 } packed;
1092 } u;
1093};
1094extern int sha1_object_info_extended(const unsigned char *, struct object_info *);
1095
1096/* Dumb servers support */
1097extern int update_server_info(int);
1098
1099/* git_config_parse_key() returns these negated: */
1100#define CONFIG_INVALID_KEY 1
1101#define CONFIG_NO_SECTION_OR_NAME 2
1102/* git_config_set(), git_config_set_multivar() return the above or these: */
1103#define CONFIG_NO_LOCK -1
1104#define CONFIG_INVALID_FILE 3
1105#define CONFIG_NO_WRITE 4
1106#define CONFIG_NOTHING_SET 5
1107#define CONFIG_INVALID_PATTERN 6
1108#define CONFIG_GENERIC_ERROR 7
1109
1110typedef int (*config_fn_t)(const char *, const char *, void *);
1111extern int git_default_config(const char *, const char *, void *);
1112extern int git_config_from_file(config_fn_t fn, const char *, void *);
1113extern void git_config_push_parameter(const char *text);
1114extern int git_config_from_parameters(config_fn_t fn, void *data);
1115extern int git_config(config_fn_t fn, void *);
1116extern int git_config_with_options(config_fn_t fn, void *,
1117 const char *filename, int respect_includes);
1118extern int git_config_early(config_fn_t fn, void *, const char *repo_config);
1119extern int git_parse_ulong(const char *, unsigned long *);
1120extern int git_config_int(const char *, const char *);
1121extern unsigned long git_config_ulong(const char *, const char *);
1122extern int git_config_bool_or_int(const char *, const char *, int *);
1123extern int git_config_bool(const char *, const char *);
1124extern int git_config_maybe_bool(const char *, const char *);
1125extern int git_config_string(const char **, const char *, const char *);
1126extern int git_config_pathname(const char **, const char *, const char *);
1127extern int git_config_set_in_file(const char *, const char *, const char *);
1128extern int git_config_set(const char *, const char *);
1129extern int git_config_parse_key(const char *, char **, int *);
1130extern int git_config_set_multivar(const char *, const char *, const char *, int);
1131extern int git_config_set_multivar_in_file(const char *, const char *, const char *, const char *, int);
1132extern int git_config_rename_section(const char *, const char *);
1133extern int git_config_rename_section_in_file(const char *, const char *, const char *);
1134extern const char *git_etc_gitconfig(void);
1135extern int check_repository_format_version(const char *var, const char *value, void *cb);
1136extern int git_env_bool(const char *, int);
1137extern int git_config_system(void);
1138extern int config_error_nonbool(const char *);
1139extern const char *get_log_output_encoding(void);
1140extern const char *get_commit_output_encoding(void);
1141
1142extern int git_config_parse_parameter(const char *, config_fn_t fn, void *data);
1143
1144struct config_include_data {
1145 int depth;
1146 config_fn_t fn;
1147 void *data;
1148};
1149#define CONFIG_INCLUDE_INIT { 0 }
1150extern int git_config_include(const char *name, const char *value, void *data);
1151
1152#define IDENT_NAME_GIVEN 01
1153#define IDENT_MAIL_GIVEN 02
1154#define IDENT_ALL_GIVEN (IDENT_NAME_GIVEN|IDENT_MAIL_GIVEN)
1155extern int user_ident_explicitly_given;
1156extern int user_ident_sufficiently_given(void);
1157
1158extern const char *git_commit_encoding;
1159extern const char *git_log_output_encoding;
1160extern const char *git_mailmap_file;
1161
1162/* IO helper functions */
1163extern void maybe_flush_or_die(FILE *, const char *);
1164extern int copy_fd(int ifd, int ofd);
1165extern int copy_file(const char *dst, const char *src, int mode);
1166extern int copy_file_with_time(const char *dst, const char *src, int mode);
1167extern void write_or_die(int fd, const void *buf, size_t count);
1168extern int write_or_whine(int fd, const void *buf, size_t count, const char *msg);
1169extern int write_or_whine_pipe(int fd, const void *buf, size_t count, const char *msg);
1170extern void fsync_or_die(int fd, const char *);
1171
1172extern ssize_t read_in_full(int fd, void *buf, size_t count);
1173extern ssize_t write_in_full(int fd, const void *buf, size_t count);
1174static inline ssize_t write_str_in_full(int fd, const char *str)
1175{
1176 return write_in_full(fd, str, strlen(str));
1177}
1178
1179/* pager.c */
1180extern void setup_pager(void);
1181extern const char *pager_program;
1182extern int pager_in_use(void);
1183extern int pager_use_color;
1184extern int term_columns(void);
1185extern int decimal_width(int);
1186
1187extern const char *editor_program;
1188extern const char *askpass_program;
1189extern const char *excludes_file;
1190
1191/* base85 */
1192int decode_85(char *dst, const char *line, int linelen);
1193void encode_85(char *buf, const unsigned char *data, int bytes);
1194
1195/* alloc.c */
1196extern void *alloc_blob_node(void);
1197extern void *alloc_tree_node(void);
1198extern void *alloc_commit_node(void);
1199extern void *alloc_tag_node(void);
1200extern void *alloc_object_node(void);
1201extern void alloc_report(void);
1202
1203/* trace.c */
1204__attribute__((format (printf, 1, 2)))
1205extern void trace_printf(const char *format, ...);
1206__attribute__((format (printf, 2, 3)))
1207extern void trace_argv_printf(const char **argv, const char *format, ...);
1208extern void trace_repo_setup(const char *prefix);
1209extern int trace_want(const char *key);
1210extern void trace_strbuf(const char *key, const struct strbuf *buf);
1211
1212void packet_trace_identity(const char *prog);
1213
1214/* add */
1215/*
1216 * return 0 if success, 1 - if addition of a file failed and
1217 * ADD_FILES_IGNORE_ERRORS was specified in flags
1218 */
1219int add_files_to_cache(const char *prefix, const char **pathspec, int flags);
1220
1221/* diff.c */
1222extern int diff_auto_refresh_index;
1223
1224/* match-trees.c */
1225void shift_tree(const unsigned char *, const unsigned char *, unsigned char *, int);
1226void shift_tree_by(const unsigned char *, const unsigned char *, unsigned char *, const char *);
1227
1228/*
1229 * whitespace rules.
1230 * used by both diff and apply
1231 * last two digits are tab width
1232 */
1233#define WS_BLANK_AT_EOL 0100
1234#define WS_SPACE_BEFORE_TAB 0200
1235#define WS_INDENT_WITH_NON_TAB 0400
1236#define WS_CR_AT_EOL 01000
1237#define WS_BLANK_AT_EOF 02000
1238#define WS_TAB_IN_INDENT 04000
1239#define WS_TRAILING_SPACE (WS_BLANK_AT_EOL|WS_BLANK_AT_EOF)
1240#define WS_DEFAULT_RULE (WS_TRAILING_SPACE|WS_SPACE_BEFORE_TAB|8)
1241#define WS_TAB_WIDTH_MASK 077
1242extern unsigned whitespace_rule_cfg;
1243extern unsigned whitespace_rule(const char *);
1244extern unsigned parse_whitespace_rule(const char *);
1245extern unsigned ws_check(const char *line, int len, unsigned ws_rule);
1246extern void ws_check_emit(const char *line, int len, unsigned ws_rule, FILE *stream, const char *set, const char *reset, const char *ws);
1247extern char *whitespace_error_string(unsigned ws);
1248extern void ws_fix_copy(struct strbuf *, const char *, int, unsigned, int *);
1249extern int ws_blank_line(const char *line, int len, unsigned ws_rule);
1250#define ws_tab_width(rule) ((rule) & WS_TAB_WIDTH_MASK)
1251
1252/* ls-files */
1253int report_path_error(const char *ps_matched, const char **pathspec, const char *prefix);
1254void overlay_tree_on_cache(const char *tree_name, const char *prefix);
1255
1256char *alias_lookup(const char *alias);
1257int split_cmdline(char *cmdline, const char ***argv);
1258/* Takes a negative value returned by split_cmdline */
1259const char *split_cmdline_strerror(int cmdline_errno);
1260
1261/* git.c */
1262struct startup_info {
1263 int have_repository;
1264 const char *prefix;
1265};
1266extern struct startup_info *startup_info;
1267
1268/* merge.c */
1269struct commit_list;
1270int try_merge_command(const char *strategy, size_t xopts_nr,
1271 const char **xopts, struct commit_list *common,
1272 const char *head_arg, struct commit_list *remotes);
1273int checkout_fast_forward(const unsigned char *from,
1274 const unsigned char *to,
1275 int overwrite_ignore);
1276
1277
1278int sane_execvp(const char *file, char *const argv[]);
1279
1280#endif /* CACHE_H */