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 char sha1[20];
132 struct cache_entry *next;
133 struct cache_entry *dir_next;
134 char name[FLEX_ARRAY]; /* more */
135};
136
137#define CE_NAMEMASK (0x0fff)
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(size_t len, unsigned stage)
202{
203 if (len >= CE_NAMEMASK)
204 len = CE_NAMEMASK;
205 return (len | (stage << CE_STAGESHIFT));
206}
207
208static inline size_t ce_namelen(const struct cache_entry *ce)
209{
210 size_t len = ce->ce_flags & CE_NAMEMASK;
211 if (len < CE_NAMEMASK)
212 return len;
213 return strlen(ce->name + CE_NAMEMASK) + CE_NAMEMASK;
214}
215
216#define ce_size(ce) cache_entry_size(ce_namelen(ce))
217#define ce_stage(ce) ((CE_STAGEMASK & (ce)->ce_flags) >> CE_STAGESHIFT)
218#define ce_uptodate(ce) ((ce)->ce_flags & CE_UPTODATE)
219#define ce_skip_worktree(ce) ((ce)->ce_flags & CE_SKIP_WORKTREE)
220#define ce_mark_uptodate(ce) ((ce)->ce_flags |= CE_UPTODATE)
221
222#define ce_permissions(mode) (((mode) & 0100) ? 0755 : 0644)
223static inline unsigned int create_ce_mode(unsigned int mode)
224{
225 if (S_ISLNK(mode))
226 return S_IFLNK;
227 if (S_ISDIR(mode) || S_ISGITLINK(mode))
228 return S_IFGITLINK;
229 return S_IFREG | ce_permissions(mode);
230}
231static inline unsigned int ce_mode_from_stat(struct cache_entry *ce, unsigned int mode)
232{
233 extern int trust_executable_bit, has_symlinks;
234 if (!has_symlinks && S_ISREG(mode) &&
235 ce && S_ISLNK(ce->ce_mode))
236 return ce->ce_mode;
237 if (!trust_executable_bit && S_ISREG(mode)) {
238 if (ce && S_ISREG(ce->ce_mode))
239 return ce->ce_mode;
240 return create_ce_mode(0666);
241 }
242 return create_ce_mode(mode);
243}
244static inline int ce_to_dtype(const struct cache_entry *ce)
245{
246 unsigned ce_mode = ntohl(ce->ce_mode);
247 if (S_ISREG(ce_mode))
248 return DT_REG;
249 else if (S_ISDIR(ce_mode) || S_ISGITLINK(ce_mode))
250 return DT_DIR;
251 else if (S_ISLNK(ce_mode))
252 return DT_LNK;
253 else
254 return DT_UNKNOWN;
255}
256static inline unsigned int canon_mode(unsigned int mode)
257{
258 if (S_ISREG(mode))
259 return S_IFREG | ce_permissions(mode);
260 if (S_ISLNK(mode))
261 return S_IFLNK;
262 if (S_ISDIR(mode))
263 return S_IFDIR;
264 return S_IFGITLINK;
265}
266
267#define cache_entry_size(len) (offsetof(struct cache_entry,name) + (len) + 1)
268
269struct index_state {
270 struct cache_entry **cache;
271 unsigned int version;
272 unsigned int cache_nr, cache_alloc, cache_changed;
273 struct string_list *resolve_undo;
274 struct cache_tree *cache_tree;
275 struct cache_time timestamp;
276 unsigned name_hash_initialized : 1,
277 initialized : 1;
278 struct hash_table name_hash;
279};
280
281extern struct index_state the_index;
282
283/* Name hashing */
284extern void add_name_hash(struct index_state *istate, struct cache_entry *ce);
285/*
286 * We don't actually *remove* it, we can just mark it invalid so that
287 * we won't find it in lookups.
288 *
289 * Not only would we have to search the lists (simple enough), but
290 * we'd also have to rehash other hash buckets in case this makes the
291 * hash bucket empty (common). So it's much better to just mark
292 * it.
293 */
294static inline void remove_name_hash(struct cache_entry *ce)
295{
296 ce->ce_flags |= CE_UNHASHED;
297}
298
299
300#ifndef NO_THE_INDEX_COMPATIBILITY_MACROS
301#define active_cache (the_index.cache)
302#define active_nr (the_index.cache_nr)
303#define active_alloc (the_index.cache_alloc)
304#define active_cache_changed (the_index.cache_changed)
305#define active_cache_tree (the_index.cache_tree)
306
307#define read_cache() read_index(&the_index)
308#define read_cache_from(path) read_index_from(&the_index, (path))
309#define read_cache_preload(pathspec) read_index_preload(&the_index, (pathspec))
310#define is_cache_unborn() is_index_unborn(&the_index)
311#define read_cache_unmerged() read_index_unmerged(&the_index)
312#define write_cache(newfd, cache, entries) write_index(&the_index, (newfd))
313#define discard_cache() discard_index(&the_index)
314#define unmerged_cache() unmerged_index(&the_index)
315#define cache_name_pos(name, namelen) index_name_pos(&the_index,(name),(namelen))
316#define add_cache_entry(ce, option) add_index_entry(&the_index, (ce), (option))
317#define rename_cache_entry_at(pos, new_name) rename_index_entry_at(&the_index, (pos), (new_name))
318#define remove_cache_entry_at(pos) remove_index_entry_at(&the_index, (pos))
319#define remove_file_from_cache(path) remove_file_from_index(&the_index, (path))
320#define add_to_cache(path, st, flags) add_to_index(&the_index, (path), (st), (flags))
321#define add_file_to_cache(path, flags) add_file_to_index(&the_index, (path), (flags))
322#define refresh_cache(flags) refresh_index(&the_index, (flags), NULL, NULL, NULL)
323#define ce_match_stat(ce, st, options) ie_match_stat(&the_index, (ce), (st), (options))
324#define ce_modified(ce, st, options) ie_modified(&the_index, (ce), (st), (options))
325#define cache_name_exists(name, namelen, igncase) index_name_exists(&the_index, (name), (namelen), (igncase))
326#define cache_name_is_other(name, namelen) index_name_is_other(&the_index, (name), (namelen))
327#define resolve_undo_clear() resolve_undo_clear_index(&the_index)
328#define unmerge_cache_entry_at(at) unmerge_index_entry_at(&the_index, at)
329#define unmerge_cache(pathspec) unmerge_index(&the_index, pathspec)
330#endif
331
332enum object_type {
333 OBJ_BAD = -1,
334 OBJ_NONE = 0,
335 OBJ_COMMIT = 1,
336 OBJ_TREE = 2,
337 OBJ_BLOB = 3,
338 OBJ_TAG = 4,
339 /* 5 for future expansion */
340 OBJ_OFS_DELTA = 6,
341 OBJ_REF_DELTA = 7,
342 OBJ_ANY,
343 OBJ_MAX
344};
345
346static inline enum object_type object_type(unsigned int mode)
347{
348 return S_ISDIR(mode) ? OBJ_TREE :
349 S_ISGITLINK(mode) ? OBJ_COMMIT :
350 OBJ_BLOB;
351}
352
353#define GIT_DIR_ENVIRONMENT "GIT_DIR"
354#define GIT_NAMESPACE_ENVIRONMENT "GIT_NAMESPACE"
355#define GIT_WORK_TREE_ENVIRONMENT "GIT_WORK_TREE"
356#define DEFAULT_GIT_DIR_ENVIRONMENT ".git"
357#define DB_ENVIRONMENT "GIT_OBJECT_DIRECTORY"
358#define INDEX_ENVIRONMENT "GIT_INDEX_FILE"
359#define GRAFT_ENVIRONMENT "GIT_GRAFT_FILE"
360#define TEMPLATE_DIR_ENVIRONMENT "GIT_TEMPLATE_DIR"
361#define CONFIG_ENVIRONMENT "GIT_CONFIG"
362#define CONFIG_DATA_ENVIRONMENT "GIT_CONFIG_PARAMETERS"
363#define EXEC_PATH_ENVIRONMENT "GIT_EXEC_PATH"
364#define CEILING_DIRECTORIES_ENVIRONMENT "GIT_CEILING_DIRECTORIES"
365#define NO_REPLACE_OBJECTS_ENVIRONMENT "GIT_NO_REPLACE_OBJECTS"
366#define GITATTRIBUTES_FILE ".gitattributes"
367#define INFOATTRIBUTES_FILE "info/attributes"
368#define ATTRIBUTE_MACRO_PREFIX "[attr]"
369#define GIT_NOTES_REF_ENVIRONMENT "GIT_NOTES_REF"
370#define GIT_NOTES_DEFAULT_REF "refs/notes/commits"
371#define GIT_NOTES_DISPLAY_REF_ENVIRONMENT "GIT_NOTES_DISPLAY_REF"
372#define GIT_NOTES_REWRITE_REF_ENVIRONMENT "GIT_NOTES_REWRITE_REF"
373#define GIT_NOTES_REWRITE_MODE_ENVIRONMENT "GIT_NOTES_REWRITE_MODE"
374
375/*
376 * Repository-local GIT_* environment variables
377 * The array is NULL-terminated to simplify its usage in contexts such
378 * environment creation or simple walk of the list.
379 * The number of non-NULL entries is available as a macro.
380 */
381#define LOCAL_REPO_ENV_SIZE 9
382extern const char *const local_repo_env[LOCAL_REPO_ENV_SIZE + 1];
383
384extern int is_bare_repository_cfg;
385extern int is_bare_repository(void);
386extern int is_inside_git_dir(void);
387extern char *git_work_tree_cfg;
388extern int is_inside_work_tree(void);
389extern int have_git_dir(void);
390extern const char *get_git_dir(void);
391extern int is_git_directory(const char *path);
392extern char *get_object_directory(void);
393extern char *get_index_file(void);
394extern char *get_graft_file(void);
395extern int set_git_dir(const char *path);
396extern const char *get_git_namespace(void);
397extern const char *strip_namespace(const char *namespaced_ref);
398extern const char *get_git_work_tree(void);
399extern const char *read_gitfile(const char *path);
400extern const char *resolve_gitdir(const char *suspect);
401extern void set_git_work_tree(const char *tree);
402
403#define ALTERNATE_DB_ENVIRONMENT "GIT_ALTERNATE_OBJECT_DIRECTORIES"
404
405extern const char **get_pathspec(const char *prefix, const char **pathspec);
406extern void setup_work_tree(void);
407extern const char *setup_git_directory_gently(int *);
408extern const char *setup_git_directory(void);
409extern char *prefix_path(const char *prefix, int len, const char *path);
410extern const char *prefix_filename(const char *prefix, int len, const char *path);
411extern int check_filename(const char *prefix, const char *name);
412extern void verify_filename(const char *prefix,
413 const char *name,
414 int diagnose_misspelt_rev);
415extern void verify_non_filename(const char *prefix, const char *name);
416extern int path_inside_repo(const char *prefix, const char *path);
417
418#define INIT_DB_QUIET 0x0001
419
420extern int set_git_dir_init(const char *git_dir, const char *real_git_dir, int);
421extern int init_db(const char *template_dir, unsigned int flags);
422
423#define alloc_nr(x) (((x)+16)*3/2)
424
425/*
426 * Realloc the buffer pointed at by variable 'x' so that it can hold
427 * at least 'nr' entries; the number of entries currently allocated
428 * is 'alloc', using the standard growing factor alloc_nr() macro.
429 *
430 * DO NOT USE any expression with side-effect for 'x', 'nr', or 'alloc'.
431 */
432#define ALLOC_GROW(x, nr, alloc) \
433 do { \
434 if ((nr) > alloc) { \
435 if (alloc_nr(alloc) < (nr)) \
436 alloc = (nr); \
437 else \
438 alloc = alloc_nr(alloc); \
439 x = xrealloc((x), alloc * sizeof(*(x))); \
440 } \
441 } while (0)
442
443/* Initialize and use the cache information */
444extern int read_index(struct index_state *);
445extern int read_index_preload(struct index_state *, const char **pathspec);
446extern int read_index_from(struct index_state *, const char *path);
447extern int is_index_unborn(struct index_state *);
448extern int read_index_unmerged(struct index_state *);
449extern int write_index(struct index_state *, int newfd);
450extern int discard_index(struct index_state *);
451extern int unmerged_index(const struct index_state *);
452extern int verify_path(const char *path);
453extern struct cache_entry *index_name_exists(struct index_state *istate, const char *name, int namelen, int igncase);
454extern int index_name_pos(const struct index_state *, const char *name, int namelen);
455#define ADD_CACHE_OK_TO_ADD 1 /* Ok to add */
456#define ADD_CACHE_OK_TO_REPLACE 2 /* Ok to replace file/directory */
457#define ADD_CACHE_SKIP_DFCHECK 4 /* Ok to skip DF conflict checks */
458#define ADD_CACHE_JUST_APPEND 8 /* Append only; tree.c::read_tree() */
459#define ADD_CACHE_NEW_ONLY 16 /* Do not replace existing ones */
460extern int add_index_entry(struct index_state *, struct cache_entry *ce, int option);
461extern void rename_index_entry_at(struct index_state *, int pos, const char *new_name);
462extern int remove_index_entry_at(struct index_state *, int pos);
463extern void remove_marked_cache_entries(struct index_state *istate);
464extern int remove_file_from_index(struct index_state *, const char *path);
465#define ADD_CACHE_VERBOSE 1
466#define ADD_CACHE_PRETEND 2
467#define ADD_CACHE_IGNORE_ERRORS 4
468#define ADD_CACHE_IGNORE_REMOVAL 8
469#define ADD_CACHE_INTENT 16
470extern int add_to_index(struct index_state *, const char *path, struct stat *, int flags);
471extern int add_file_to_index(struct index_state *, const char *path, int flags);
472extern struct cache_entry *make_cache_entry(unsigned int mode, const unsigned char *sha1, const char *path, int stage, int refresh);
473extern int ce_same_name(struct cache_entry *a, struct cache_entry *b);
474extern int index_name_is_other(const struct index_state *, const char *, int);
475
476/* do stat comparison even if CE_VALID is true */
477#define CE_MATCH_IGNORE_VALID 01
478/* do not check the contents but report dirty on racily-clean entries */
479#define CE_MATCH_RACY_IS_DIRTY 02
480/* do stat comparison even if CE_SKIP_WORKTREE is true */
481#define CE_MATCH_IGNORE_SKIP_WORKTREE 04
482extern int ie_match_stat(const struct index_state *, struct cache_entry *, struct stat *, unsigned int);
483extern int ie_modified(const struct index_state *, struct cache_entry *, struct stat *, unsigned int);
484
485struct pathspec {
486 const char **raw; /* get_pathspec() result, not freed by free_pathspec() */
487 int nr;
488 unsigned int has_wildcard:1;
489 unsigned int recursive:1;
490 int max_depth;
491 struct pathspec_item {
492 const char *match;
493 int len;
494 unsigned int use_wildcard:1;
495 } *items;
496};
497
498extern int init_pathspec(struct pathspec *, const char **);
499extern void free_pathspec(struct pathspec *);
500extern int ce_path_match(const struct cache_entry *ce, const struct pathspec *pathspec);
501
502#define HASH_WRITE_OBJECT 1
503#define HASH_FORMAT_CHECK 2
504extern int index_fd(unsigned char *sha1, int fd, struct stat *st, enum object_type type, const char *path, unsigned flags);
505extern int index_path(unsigned char *sha1, const char *path, struct stat *st, unsigned flags);
506extern void fill_stat_cache_info(struct cache_entry *ce, struct stat *st);
507
508#define REFRESH_REALLY 0x0001 /* ignore_valid */
509#define REFRESH_UNMERGED 0x0002 /* allow unmerged */
510#define REFRESH_QUIET 0x0004 /* be quiet about it */
511#define REFRESH_IGNORE_MISSING 0x0008 /* ignore non-existent */
512#define REFRESH_IGNORE_SUBMODULES 0x0010 /* ignore submodules */
513#define REFRESH_IN_PORCELAIN 0x0020 /* user friendly output, not "needs update" */
514extern int refresh_index(struct index_state *, unsigned int flags, const char **pathspec, char *seen, const char *header_msg);
515
516struct lock_file {
517 struct lock_file *next;
518 int fd;
519 pid_t owner;
520 char on_list;
521 char filename[PATH_MAX];
522};
523#define LOCK_DIE_ON_ERROR 1
524#define LOCK_NODEREF 2
525extern int unable_to_lock_error(const char *path, int err);
526extern NORETURN void unable_to_lock_index_die(const char *path, int err);
527extern int hold_lock_file_for_update(struct lock_file *, const char *path, int);
528extern int hold_lock_file_for_append(struct lock_file *, const char *path, int);
529extern int commit_lock_file(struct lock_file *);
530extern void update_index_if_able(struct index_state *, struct lock_file *);
531
532extern int hold_locked_index(struct lock_file *, int);
533extern int commit_locked_index(struct lock_file *);
534extern void set_alternate_index_output(const char *);
535extern int close_lock_file(struct lock_file *);
536extern void rollback_lock_file(struct lock_file *);
537extern int delete_ref(const char *, const unsigned char *sha1, int delopt);
538
539/* Environment bits from configuration mechanism */
540extern int trust_executable_bit;
541extern int trust_ctime;
542extern int quote_path_fully;
543extern int has_symlinks;
544extern int minimum_abbrev, default_abbrev;
545extern int ignore_case;
546extern int assume_unchanged;
547extern int prefer_symlink_refs;
548extern int log_all_ref_updates;
549extern int warn_ambiguous_refs;
550extern int shared_repository;
551extern const char *apply_default_whitespace;
552extern const char *apply_default_ignorewhitespace;
553extern const char *git_attributes_file;
554extern int zlib_compression_level;
555extern int core_compression_level;
556extern int core_compression_seen;
557extern size_t packed_git_window_size;
558extern size_t packed_git_limit;
559extern size_t delta_base_cache_limit;
560extern unsigned long big_file_threshold;
561extern unsigned long pack_size_limit_cfg;
562extern int read_replace_refs;
563extern int fsync_object_files;
564extern int core_preload_index;
565extern int core_apply_sparse_checkout;
566
567enum branch_track {
568 BRANCH_TRACK_UNSPECIFIED = -1,
569 BRANCH_TRACK_NEVER = 0,
570 BRANCH_TRACK_REMOTE,
571 BRANCH_TRACK_ALWAYS,
572 BRANCH_TRACK_EXPLICIT,
573 BRANCH_TRACK_OVERRIDE
574};
575
576enum rebase_setup_type {
577 AUTOREBASE_NEVER = 0,
578 AUTOREBASE_LOCAL,
579 AUTOREBASE_REMOTE,
580 AUTOREBASE_ALWAYS
581};
582
583enum push_default_type {
584 PUSH_DEFAULT_NOTHING = 0,
585 PUSH_DEFAULT_MATCHING,
586 PUSH_DEFAULT_SIMPLE,
587 PUSH_DEFAULT_UPSTREAM,
588 PUSH_DEFAULT_CURRENT,
589 PUSH_DEFAULT_UNSPECIFIED
590};
591
592extern enum branch_track git_branch_track;
593extern enum rebase_setup_type autorebase;
594extern enum push_default_type push_default;
595
596enum object_creation_mode {
597 OBJECT_CREATION_USES_HARDLINKS = 0,
598 OBJECT_CREATION_USES_RENAMES = 1
599};
600
601extern enum object_creation_mode object_creation_mode;
602
603extern char *notes_ref_name;
604
605extern int grafts_replace_parents;
606
607#define GIT_REPO_VERSION 0
608extern int repository_format_version;
609extern int check_repository_format(void);
610
611#define MTIME_CHANGED 0x0001
612#define CTIME_CHANGED 0x0002
613#define OWNER_CHANGED 0x0004
614#define MODE_CHANGED 0x0008
615#define INODE_CHANGED 0x0010
616#define DATA_CHANGED 0x0020
617#define TYPE_CHANGED 0x0040
618
619extern char *mksnpath(char *buf, size_t n, const char *fmt, ...)
620 __attribute__((format (printf, 3, 4)));
621extern char *git_snpath(char *buf, size_t n, const char *fmt, ...)
622 __attribute__((format (printf, 3, 4)));
623extern char *git_pathdup(const char *fmt, ...)
624 __attribute__((format (printf, 1, 2)));
625extern char *mkpathdup(const char *fmt, ...)
626 __attribute__((format (printf, 1, 2)));
627
628/* Return a statically allocated filename matching the sha1 signature */
629extern char *mkpath(const char *fmt, ...) __attribute__((format (printf, 1, 2)));
630extern char *git_path(const char *fmt, ...) __attribute__((format (printf, 1, 2)));
631extern char *git_path_submodule(const char *path, const char *fmt, ...)
632 __attribute__((format (printf, 2, 3)));
633
634extern char *sha1_file_name(const unsigned char *sha1);
635extern char *sha1_pack_name(const unsigned char *sha1);
636extern char *sha1_pack_index_name(const unsigned char *sha1);
637extern const char *find_unique_abbrev(const unsigned char *sha1, int);
638extern const unsigned char null_sha1[20];
639
640static inline int hashcmp(const unsigned char *sha1, const unsigned char *sha2)
641{
642 int i;
643
644 for (i = 0; i < 20; i++, sha1++, sha2++) {
645 if (*sha1 != *sha2)
646 return *sha1 - *sha2;
647 }
648
649 return 0;
650}
651
652static inline int is_null_sha1(const unsigned char *sha1)
653{
654 return !hashcmp(sha1, null_sha1);
655}
656
657static inline void hashcpy(unsigned char *sha_dst, const unsigned char *sha_src)
658{
659 memcpy(sha_dst, sha_src, 20);
660}
661static inline void hashclr(unsigned char *hash)
662{
663 memset(hash, 0, 20);
664}
665
666#define EMPTY_TREE_SHA1_HEX \
667 "4b825dc642cb6eb9a060e54bf8d69288fbee4904"
668#define EMPTY_TREE_SHA1_BIN_LITERAL \
669 "\x4b\x82\x5d\xc6\x42\xcb\x6e\xb9\xa0\x60" \
670 "\xe5\x4b\xf8\xd6\x92\x88\xfb\xee\x49\x04"
671#define EMPTY_TREE_SHA1_BIN \
672 ((const unsigned char *) EMPTY_TREE_SHA1_BIN_LITERAL)
673
674#define EMPTY_BLOB_SHA1_HEX \
675 "e69de29bb2d1d6434b8b29ae775ad8c2e48c5391"
676#define EMPTY_BLOB_SHA1_BIN_LITERAL \
677 "\xe6\x9d\xe2\x9b\xb2\xd1\xd6\x43\x4b\x8b" \
678 "\x29\xae\x77\x5a\xd8\xc2\xe4\x8c\x53\x91"
679#define EMPTY_BLOB_SHA1_BIN \
680 ((const unsigned char *) EMPTY_BLOB_SHA1_BIN_LITERAL)
681
682static inline int is_empty_blob_sha1(const unsigned char *sha1)
683{
684 return !hashcmp(sha1, EMPTY_BLOB_SHA1_BIN);
685}
686
687int git_mkstemp(char *path, size_t n, const char *template);
688
689int git_mkstemps(char *path, size_t n, const char *template, int suffix_len);
690
691/* set default permissions by passing mode arguments to open(2) */
692int git_mkstemps_mode(char *pattern, int suffix_len, int mode);
693int git_mkstemp_mode(char *pattern, int mode);
694
695/*
696 * NOTE NOTE NOTE!!
697 *
698 * PERM_UMASK, OLD_PERM_GROUP and OLD_PERM_EVERYBODY enumerations must
699 * not be changed. Old repositories have core.sharedrepository written in
700 * numeric format, and therefore these values are preserved for compatibility
701 * reasons.
702 */
703enum sharedrepo {
704 PERM_UMASK = 0,
705 OLD_PERM_GROUP = 1,
706 OLD_PERM_EVERYBODY = 2,
707 PERM_GROUP = 0660,
708 PERM_EVERYBODY = 0664
709};
710int git_config_perm(const char *var, const char *value);
711int set_shared_perm(const char *path, int mode);
712#define adjust_shared_perm(path) set_shared_perm((path), 0)
713int safe_create_leading_directories(char *path);
714int safe_create_leading_directories_const(const char *path);
715int mkdir_in_gitdir(const char *path);
716extern void home_config_paths(char **global, char **xdg, char *file);
717extern char *expand_user_path(const char *path);
718const char *enter_repo(const char *path, int strict);
719static inline int is_absolute_path(const char *path)
720{
721 return is_dir_sep(path[0]) || has_dos_drive_prefix(path);
722}
723int is_directory(const char *);
724const char *real_path(const char *path);
725const char *absolute_path(const char *path);
726const char *relative_path(const char *abs, const char *base);
727int normalize_path_copy(char *dst, const char *src);
728int longest_ancestor_length(const char *path, const char *prefix_list);
729char *strip_path_suffix(const char *path, const char *suffix);
730int daemon_avoid_alias(const char *path);
731int offset_1st_component(const char *path);
732
733/* object replacement */
734#define READ_SHA1_FILE_REPLACE 1
735extern void *read_sha1_file_extended(const unsigned char *sha1, enum object_type *type, unsigned long *size, unsigned flag);
736static inline void *read_sha1_file(const unsigned char *sha1, enum object_type *type, unsigned long *size)
737{
738 return read_sha1_file_extended(sha1, type, size, READ_SHA1_FILE_REPLACE);
739}
740extern const unsigned char *do_lookup_replace_object(const unsigned char *sha1);
741static inline const unsigned char *lookup_replace_object(const unsigned char *sha1)
742{
743 if (!read_replace_refs)
744 return sha1;
745 return do_lookup_replace_object(sha1);
746}
747
748/* Read and unpack a sha1 file into memory, write memory to a sha1 file */
749extern int sha1_object_info(const unsigned char *, unsigned long *);
750extern int hash_sha1_file(const void *buf, unsigned long len, const char *type, unsigned char *sha1);
751extern int write_sha1_file(const void *buf, unsigned long len, const char *type, unsigned char *return_sha1);
752extern int pretend_sha1_file(void *, unsigned long, enum object_type, unsigned char *);
753extern int force_object_loose(const unsigned char *sha1, time_t mtime);
754extern void *map_sha1_file(const unsigned char *sha1, unsigned long *size);
755extern int unpack_sha1_header(git_zstream *stream, unsigned char *map, unsigned long mapsize, void *buffer, unsigned long bufsiz);
756extern int parse_sha1_header(const char *hdr, unsigned long *sizep);
757
758/* global flag to enable extra checks when accessing packed objects */
759extern int do_check_packed_object_crc;
760
761/* for development: log offset of pack access */
762extern const char *log_pack_access;
763
764extern int check_sha1_signature(const unsigned char *sha1, void *buf, unsigned long size, const char *type);
765
766extern int move_temp_to_file(const char *tmpfile, const char *filename);
767
768extern int has_sha1_pack(const unsigned char *sha1);
769extern int has_sha1_file(const unsigned char *sha1);
770extern int has_loose_object_nonlocal(const unsigned char *sha1);
771
772extern int has_pack_index(const unsigned char *sha1);
773
774extern void assert_sha1_type(const unsigned char *sha1, enum object_type expect);
775
776extern const signed char hexval_table[256];
777static inline unsigned int hexval(unsigned char c)
778{
779 return hexval_table[c];
780}
781
782/* Convert to/from hex/sha1 representation */
783#define MINIMUM_ABBREV minimum_abbrev
784#define DEFAULT_ABBREV default_abbrev
785
786struct object_context {
787 unsigned char tree[20];
788 char path[PATH_MAX];
789 unsigned mode;
790};
791
792extern int get_sha1(const char *str, unsigned char *sha1);
793extern int get_sha1_with_mode_1(const char *str, unsigned char *sha1, unsigned *mode, int only_to_die, const char *prefix);
794static inline int get_sha1_with_mode(const char *str, unsigned char *sha1, unsigned *mode)
795{
796 return get_sha1_with_mode_1(str, sha1, mode, 0, NULL);
797}
798extern int get_sha1_with_context_1(const char *name, unsigned char *sha1, struct object_context *orc, int only_to_die, const char *prefix);
799static inline int get_sha1_with_context(const char *str, unsigned char *sha1, struct object_context *orc)
800{
801 return get_sha1_with_context_1(str, sha1, orc, 0, NULL);
802}
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);
866
867extern void *read_object_with_reference(const unsigned char *sha1,
868 const char *required_type,
869 unsigned long *size,
870 unsigned char *sha1_ret);
871
872extern struct object *peel_to_type(const char *name, int namelen,
873 struct object *o, enum object_type);
874
875enum date_mode {
876 DATE_NORMAL = 0,
877 DATE_RELATIVE,
878 DATE_SHORT,
879 DATE_LOCAL,
880 DATE_ISO8601,
881 DATE_RFC2822,
882 DATE_RAW
883};
884
885const char *show_date(unsigned long time, int timezone, enum date_mode mode);
886void show_date_relative(unsigned long time, int tz, const struct timeval *now,
887 struct strbuf *timebuf);
888int parse_date(const char *date, char *buf, int bufsize);
889int parse_date_basic(const char *date, unsigned long *timestamp, int *offset);
890void datestamp(char *buf, int bufsize);
891#define approxidate(s) approxidate_careful((s), NULL)
892unsigned long approxidate_careful(const char *, int *);
893unsigned long approxidate_relative(const char *date, const struct timeval *now);
894enum date_mode parse_date_format(const char *format);
895
896#define IDENT_STRICT 1
897#define IDENT_NO_DATE 2
898#define IDENT_NO_NAME 4
899extern const char *git_author_info(int);
900extern const char *git_committer_info(int);
901extern const char *fmt_ident(const char *name, const char *email, const char *date_str, int);
902extern const char *fmt_name(const char *name, const char *email);
903extern const char *ident_default_name(void);
904extern const char *ident_default_email(void);
905extern const char *ident_default_date(void);
906extern const char *git_editor(void);
907extern const char *git_pager(int stdout_is_tty);
908extern int git_ident_config(const char *, const char *, void *);
909
910struct ident_split {
911 const char *name_begin;
912 const char *name_end;
913 const char *mail_begin;
914 const char *mail_end;
915 const char *date_begin;
916 const char *date_end;
917 const char *tz_begin;
918 const char *tz_end;
919};
920/*
921 * Signals an success with 0, but time part of the result may be NULL
922 * if the input lacks timestamp and zone
923 */
924extern int split_ident_line(struct ident_split *, const char *, int);
925
926struct checkout {
927 const char *base_dir;
928 int base_dir_len;
929 unsigned force:1,
930 quiet:1,
931 not_new:1,
932 refresh_cache:1;
933};
934
935extern int checkout_entry(struct cache_entry *ce, const struct checkout *state, char *topath);
936
937struct cache_def {
938 char path[PATH_MAX + 1];
939 int len;
940 int flags;
941 int track_flags;
942 int prefix_len_stat_func;
943};
944
945extern int has_symlink_leading_path(const char *name, int len);
946extern int threaded_has_symlink_leading_path(struct cache_def *, const char *, int);
947extern int check_leading_path(const char *name, int len);
948extern int threaded_check_leading_path(struct cache_def *cache, const char *name, int len);
949extern int has_dirs_only_path(const char *name, int len, int prefix_len);
950extern int threaded_has_dirs_only_path(struct cache_def *cache, const char *name, int len, int prefix_len);
951extern void schedule_dir_for_removal(const char *name, int len);
952extern void remove_scheduled_dirs(void);
953
954extern struct alternate_object_database {
955 struct alternate_object_database *next;
956 char *name;
957 char base[FLEX_ARRAY]; /* more */
958} *alt_odb_list;
959extern void prepare_alt_odb(void);
960extern void read_info_alternates(const char * relative_base, int depth);
961extern void add_to_alternates_file(const char *reference);
962typedef int alt_odb_fn(struct alternate_object_database *, void *);
963extern void foreach_alt_odb(alt_odb_fn, void*);
964
965struct pack_window {
966 struct pack_window *next;
967 unsigned char *base;
968 off_t offset;
969 size_t len;
970 unsigned int last_used;
971 unsigned int inuse_cnt;
972};
973
974extern struct packed_git {
975 struct packed_git *next;
976 struct pack_window *windows;
977 off_t pack_size;
978 const void *index_data;
979 size_t index_size;
980 uint32_t num_objects;
981 uint32_t num_bad_objects;
982 unsigned char *bad_object_sha1;
983 int index_version;
984 time_t mtime;
985 int pack_fd;
986 unsigned pack_local:1,
987 pack_keep:1,
988 do_not_close:1;
989 unsigned char sha1[20];
990 /* something like ".git/objects/pack/xxxxx.pack" */
991 char pack_name[FLEX_ARRAY]; /* more */
992} *packed_git;
993
994struct pack_entry {
995 off_t offset;
996 unsigned char sha1[20];
997 struct packed_git *p;
998};
999
1000struct ref {
1001 struct ref *next;
1002 unsigned char old_sha1[20];
1003 unsigned char new_sha1[20];
1004 char *symref;
1005 unsigned int force:1,
1006 merge:1,
1007 nonfastforward:1,
1008 deletion:1;
1009 enum {
1010 REF_STATUS_NONE = 0,
1011 REF_STATUS_OK,
1012 REF_STATUS_REJECT_NONFASTFORWARD,
1013 REF_STATUS_REJECT_NODELETE,
1014 REF_STATUS_UPTODATE,
1015 REF_STATUS_REMOTE_REJECT,
1016 REF_STATUS_EXPECTING_REPORT
1017 } status;
1018 char *remote_status;
1019 struct ref *peer_ref; /* when renaming */
1020 char name[FLEX_ARRAY]; /* more */
1021};
1022
1023#define REF_NORMAL (1u << 0)
1024#define REF_HEADS (1u << 1)
1025#define REF_TAGS (1u << 2)
1026
1027extern struct ref *find_ref_by_name(const struct ref *list, const char *name);
1028
1029#define CONNECT_VERBOSE (1u << 0)
1030extern struct child_process *git_connect(int fd[2], const char *url, const char *prog, int flags);
1031extern int finish_connect(struct child_process *conn);
1032extern int git_connection_is_socket(struct child_process *conn);
1033struct extra_have_objects {
1034 int nr, alloc;
1035 unsigned char (*array)[20];
1036};
1037extern struct ref **get_remote_heads(int in, struct ref **list, unsigned int flags, struct extra_have_objects *);
1038extern int server_supports(const char *feature);
1039extern const char *parse_feature_request(const char *features, const char *feature);
1040
1041extern struct packed_git *parse_pack_index(unsigned char *sha1, const char *idx_path);
1042
1043extern void prepare_packed_git(void);
1044extern void reprepare_packed_git(void);
1045extern void install_packed_git(struct packed_git *pack);
1046
1047extern struct packed_git *find_sha1_pack(const unsigned char *sha1,
1048 struct packed_git *packs);
1049
1050extern void pack_report(void);
1051extern int open_pack_index(struct packed_git *);
1052extern void close_pack_index(struct packed_git *);
1053extern unsigned char *use_pack(struct packed_git *, struct pack_window **, off_t, unsigned long *);
1054extern void close_pack_windows(struct packed_git *);
1055extern void unuse_pack(struct pack_window **);
1056extern void free_pack_by_name(const char *);
1057extern void clear_delta_base_cache(void);
1058extern struct packed_git *add_packed_git(const char *, int, int);
1059extern const unsigned char *nth_packed_object_sha1(struct packed_git *, uint32_t);
1060extern off_t nth_packed_object_offset(const struct packed_git *, uint32_t);
1061extern off_t find_pack_entry_one(const unsigned char *, struct packed_git *);
1062extern int is_pack_valid(struct packed_git *);
1063extern void *unpack_entry(struct packed_git *, off_t, enum object_type *, unsigned long *);
1064extern unsigned long unpack_object_header_buffer(const unsigned char *buf, unsigned long len, enum object_type *type, unsigned long *sizep);
1065extern unsigned long get_size_from_delta(struct packed_git *, struct pack_window **, off_t);
1066extern int unpack_object_header(struct packed_git *, struct pack_window **, off_t *, unsigned long *);
1067
1068struct object_info {
1069 /* Request */
1070 unsigned long *sizep;
1071
1072 /* Response */
1073 enum {
1074 OI_CACHED,
1075 OI_LOOSE,
1076 OI_PACKED,
1077 OI_DBCACHED
1078 } whence;
1079 union {
1080 /*
1081 * struct {
1082 * ... Nothing to expose in this case
1083 * } cached;
1084 * struct {
1085 * ... Nothing to expose in this case
1086 * } loose;
1087 */
1088 struct {
1089 struct packed_git *pack;
1090 off_t offset;
1091 unsigned int is_delta;
1092 } packed;
1093 } u;
1094};
1095extern int sha1_object_info_extended(const unsigned char *, struct object_info *);
1096
1097/* Dumb servers support */
1098extern int update_server_info(int);
1099
1100/* git_config_parse_key() returns these negated: */
1101#define CONFIG_INVALID_KEY 1
1102#define CONFIG_NO_SECTION_OR_NAME 2
1103/* git_config_set(), git_config_set_multivar() return the above or these: */
1104#define CONFIG_NO_LOCK -1
1105#define CONFIG_INVALID_FILE 3
1106#define CONFIG_NO_WRITE 4
1107#define CONFIG_NOTHING_SET 5
1108#define CONFIG_INVALID_PATTERN 6
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, ...);
1206extern void trace_vprintf(const char *key, const char *format, va_list ap);
1207__attribute__((format (printf, 2, 3)))
1208extern void trace_argv_printf(const char **argv, const char *format, ...);
1209extern void trace_repo_setup(const char *prefix);
1210extern int trace_want(const char *key);
1211extern void trace_strbuf(const char *key, const struct strbuf *buf);
1212
1213void packet_trace_identity(const char *prog);
1214
1215/* add */
1216/*
1217 * return 0 if success, 1 - if addition of a file failed and
1218 * ADD_FILES_IGNORE_ERRORS was specified in flags
1219 */
1220int add_files_to_cache(const char *prefix, const char **pathspec, int flags);
1221
1222/* diff.c */
1223extern int diff_auto_refresh_index;
1224
1225/* match-trees.c */
1226void shift_tree(const unsigned char *, const unsigned char *, unsigned char *, int);
1227void shift_tree_by(const unsigned char *, const unsigned char *, unsigned char *, const char *);
1228
1229/*
1230 * whitespace rules.
1231 * used by both diff and apply
1232 * last two digits are tab width
1233 */
1234#define WS_BLANK_AT_EOL 0100
1235#define WS_SPACE_BEFORE_TAB 0200
1236#define WS_INDENT_WITH_NON_TAB 0400
1237#define WS_CR_AT_EOL 01000
1238#define WS_BLANK_AT_EOF 02000
1239#define WS_TAB_IN_INDENT 04000
1240#define WS_TRAILING_SPACE (WS_BLANK_AT_EOL|WS_BLANK_AT_EOF)
1241#define WS_DEFAULT_RULE (WS_TRAILING_SPACE|WS_SPACE_BEFORE_TAB|8)
1242#define WS_TAB_WIDTH_MASK 077
1243extern unsigned whitespace_rule_cfg;
1244extern unsigned whitespace_rule(const char *);
1245extern unsigned parse_whitespace_rule(const char *);
1246extern unsigned ws_check(const char *line, int len, unsigned ws_rule);
1247extern void ws_check_emit(const char *line, int len, unsigned ws_rule, FILE *stream, const char *set, const char *reset, const char *ws);
1248extern char *whitespace_error_string(unsigned ws);
1249extern void ws_fix_copy(struct strbuf *, const char *, int, unsigned, int *);
1250extern int ws_blank_line(const char *line, int len, unsigned ws_rule);
1251#define ws_tab_width(rule) ((rule) & WS_TAB_WIDTH_MASK)
1252
1253/* ls-files */
1254int report_path_error(const char *ps_matched, const char **pathspec, const char *prefix);
1255void overlay_tree_on_cache(const char *tree_name, const char *prefix);
1256
1257char *alias_lookup(const char *alias);
1258int split_cmdline(char *cmdline, const char ***argv);
1259/* Takes a negative value returned by split_cmdline */
1260const char *split_cmdline_strerror(int cmdline_errno);
1261
1262/* git.c */
1263struct startup_info {
1264 int have_repository;
1265 const char *prefix;
1266};
1267extern struct startup_info *startup_info;
1268
1269/* builtin/merge.c */
1270int checkout_fast_forward(const unsigned char *from, const unsigned char *to);
1271
1272int sane_execvp(const char *file, char *const argv[]);
1273
1274#endif /* CACHE_H */