1#ifndef CACHE_H
2#define CACHE_H
3
4#include "git-compat-util.h"
5#include "strbuf.h"
6#include "hash.h"
7
8#include SHA1_HEADER
9#include <zlib.h>
10
11#if defined(NO_DEFLATE_BOUND) || ZLIB_VERNUM < 0x1200
12#define deflateBound(c,s) ((s) + (((s) + 7) >> 3) + (((s) + 63) >> 6) + 11)
13#endif
14
15#if defined(DT_UNKNOWN) && !defined(NO_D_TYPE_IN_DIRENT)
16#define DTYPE(de) ((de)->d_type)
17#else
18#undef DT_UNKNOWN
19#undef DT_DIR
20#undef DT_REG
21#undef DT_LNK
22#define DT_UNKNOWN 0
23#define DT_DIR 1
24#define DT_REG 2
25#define DT_LNK 3
26#define DTYPE(de) DT_UNKNOWN
27#endif
28
29/* unknown mode (impossible combination S_IFIFO|S_IFCHR) */
30#define S_IFINVALID 0030000
31
32/*
33 * A "directory link" is a link to another git directory.
34 *
35 * The value 0160000 is not normally a valid mode, and
36 * also just happens to be S_IFDIR + S_IFLNK
37 *
38 * NOTE! We *really* shouldn't depend on the S_IFxxx macros
39 * always having the same values everywhere. We should use
40 * our internal git values for these things, and then we can
41 * translate that to the OS-specific value. It just so
42 * happens that everybody shares the same bit representation
43 * in the UNIX world (and apparently wider too..)
44 */
45#define S_IFGITLINK 0160000
46#define S_ISGITLINK(m) (((m) & S_IFMT) == S_IFGITLINK)
47
48/*
49 * Intensive research over the course of many years has shown that
50 * port 9418 is totally unused by anything else. Or
51 *
52 * Your search - "port 9418" - did not match any documents.
53 *
54 * as www.google.com puts it.
55 *
56 * This port has been properly assigned for git use by IANA:
57 * git (Assigned-9418) [I06-050728-0001].
58 *
59 * git 9418/tcp git pack transfer service
60 * git 9418/udp git pack transfer service
61 *
62 * with Linus Torvalds <torvalds@osdl.org> as the point of
63 * contact. September 2005.
64 *
65 * See http://www.iana.org/assignments/port-numbers
66 */
67#define DEFAULT_GIT_PORT 9418
68
69/*
70 * Basic data structures for the directory cache
71 */
72
73#define CACHE_SIGNATURE 0x44495243 /* "DIRC" */
74struct cache_header {
75 unsigned int hdr_signature;
76 unsigned int hdr_version;
77 unsigned int hdr_entries;
78};
79
80/*
81 * The "cache_time" is just the low 32 bits of the
82 * time. It doesn't matter if it overflows - we only
83 * check it for equality in the 32 bits we save.
84 */
85struct cache_time {
86 unsigned int sec;
87 unsigned int nsec;
88};
89
90/*
91 * dev/ino/uid/gid/size are also just tracked to the low 32 bits
92 * Again - this is just a (very strong in practice) heuristic that
93 * the inode hasn't changed.
94 *
95 * We save the fields in big-endian order to allow using the
96 * index file over NFS transparently.
97 */
98struct ondisk_cache_entry {
99 struct cache_time ctime;
100 struct cache_time mtime;
101 unsigned int dev;
102 unsigned int ino;
103 unsigned int mode;
104 unsigned int uid;
105 unsigned int gid;
106 unsigned int size;
107 unsigned char sha1[20];
108 unsigned short flags;
109 char name[FLEX_ARRAY]; /* more */
110};
111
112struct cache_entry {
113 struct cache_entry *next;
114 unsigned int ce_ctime;
115 unsigned int ce_mtime;
116 unsigned int ce_dev;
117 unsigned int ce_ino;
118 unsigned int ce_mode;
119 unsigned int ce_uid;
120 unsigned int ce_gid;
121 unsigned int ce_size;
122 unsigned int ce_flags;
123 unsigned char sha1[20];
124 char name[FLEX_ARRAY]; /* more */
125};
126
127#define CE_NAMEMASK (0x0fff)
128#define CE_STAGEMASK (0x3000)
129#define CE_VALID (0x8000)
130#define CE_STAGESHIFT 12
131
132/* In-memory only */
133#define CE_UPDATE (0x10000)
134#define CE_REMOVE (0x20000)
135#define CE_UPTODATE (0x40000)
136#define CE_UNHASHED (0x80000)
137
138static inline unsigned create_ce_flags(size_t len, unsigned stage)
139{
140 if (len >= CE_NAMEMASK)
141 len = CE_NAMEMASK;
142 return (len | (stage << CE_STAGESHIFT));
143}
144
145static inline size_t ce_namelen(const struct cache_entry *ce)
146{
147 size_t len = ce->ce_flags & CE_NAMEMASK;
148 if (len < CE_NAMEMASK)
149 return len;
150 return strlen(ce->name + CE_NAMEMASK) + CE_NAMEMASK;
151}
152
153#define ce_size(ce) cache_entry_size(ce_namelen(ce))
154#define ondisk_ce_size(ce) ondisk_cache_entry_size(ce_namelen(ce))
155#define ce_stage(ce) ((CE_STAGEMASK & (ce)->ce_flags) >> CE_STAGESHIFT)
156#define ce_uptodate(ce) ((ce)->ce_flags & CE_UPTODATE)
157#define ce_mark_uptodate(ce) ((ce)->ce_flags |= CE_UPTODATE)
158
159#define ce_permissions(mode) (((mode) & 0100) ? 0755 : 0644)
160static inline unsigned int create_ce_mode(unsigned int mode)
161{
162 if (S_ISLNK(mode))
163 return S_IFLNK;
164 if (S_ISDIR(mode) || S_ISGITLINK(mode))
165 return S_IFGITLINK;
166 return S_IFREG | ce_permissions(mode);
167}
168static inline unsigned int ce_mode_from_stat(struct cache_entry *ce, unsigned int mode)
169{
170 extern int trust_executable_bit, has_symlinks;
171 if (!has_symlinks && S_ISREG(mode) &&
172 ce && S_ISLNK(ce->ce_mode))
173 return ce->ce_mode;
174 if (!trust_executable_bit && S_ISREG(mode)) {
175 if (ce && S_ISREG(ce->ce_mode))
176 return ce->ce_mode;
177 return create_ce_mode(0666);
178 }
179 return create_ce_mode(mode);
180}
181#define canon_mode(mode) \
182 (S_ISREG(mode) ? (S_IFREG | ce_permissions(mode)) : \
183 S_ISLNK(mode) ? S_IFLNK : S_ISDIR(mode) ? S_IFDIR : S_IFGITLINK)
184
185#define cache_entry_size(len) ((offsetof(struct cache_entry,name) + (len) + 8) & ~7)
186#define ondisk_cache_entry_size(len) ((offsetof(struct ondisk_cache_entry,name) + (len) + 8) & ~7)
187
188struct index_state {
189 struct cache_entry **cache;
190 unsigned int cache_nr, cache_alloc, cache_changed;
191 struct cache_tree *cache_tree;
192 time_t timestamp;
193 void *alloc;
194 unsigned name_hash_initialized : 1;
195 struct hash_table name_hash;
196};
197
198extern struct index_state the_index;
199
200#ifndef NO_THE_INDEX_COMPATIBILITY_MACROS
201#define active_cache (the_index.cache)
202#define active_nr (the_index.cache_nr)
203#define active_alloc (the_index.cache_alloc)
204#define active_cache_changed (the_index.cache_changed)
205#define active_cache_tree (the_index.cache_tree)
206
207#define read_cache() read_index(&the_index)
208#define read_cache_from(path) read_index_from(&the_index, (path))
209#define write_cache(newfd, cache, entries) write_index(&the_index, (newfd))
210#define discard_cache() discard_index(&the_index)
211#define cache_name_pos(name, namelen) index_name_pos(&the_index,(name),(namelen))
212#define add_cache_entry(ce, option) add_index_entry(&the_index, (ce), (option))
213#define remove_cache_entry_at(pos) remove_index_entry_at(&the_index, (pos))
214#define remove_file_from_cache(path) remove_file_from_index(&the_index, (path))
215#define add_file_to_cache(path, verbose) add_file_to_index(&the_index, (path), (verbose))
216#define refresh_cache(flags) refresh_index(&the_index, (flags), NULL, NULL)
217#define ce_match_stat(ce, st, options) ie_match_stat(&the_index, (ce), (st), (options))
218#define ce_modified(ce, st, options) ie_modified(&the_index, (ce), (st), (options))
219#define cache_name_exists(name, namelen) index_name_exists(&the_index, (name), (namelen))
220#endif
221
222enum object_type {
223 OBJ_BAD = -1,
224 OBJ_NONE = 0,
225 OBJ_COMMIT = 1,
226 OBJ_TREE = 2,
227 OBJ_BLOB = 3,
228 OBJ_TAG = 4,
229 /* 5 for future expansion */
230 OBJ_OFS_DELTA = 6,
231 OBJ_REF_DELTA = 7,
232 OBJ_MAX,
233};
234
235static inline enum object_type object_type(unsigned int mode)
236{
237 return S_ISDIR(mode) ? OBJ_TREE :
238 S_ISGITLINK(mode) ? OBJ_COMMIT :
239 OBJ_BLOB;
240}
241
242#define GIT_DIR_ENVIRONMENT "GIT_DIR"
243#define GIT_WORK_TREE_ENVIRONMENT "GIT_WORK_TREE"
244#define DEFAULT_GIT_DIR_ENVIRONMENT ".git"
245#define DB_ENVIRONMENT "GIT_OBJECT_DIRECTORY"
246#define INDEX_ENVIRONMENT "GIT_INDEX_FILE"
247#define GRAFT_ENVIRONMENT "GIT_GRAFT_FILE"
248#define TEMPLATE_DIR_ENVIRONMENT "GIT_TEMPLATE_DIR"
249#define CONFIG_ENVIRONMENT "GIT_CONFIG"
250#define CONFIG_LOCAL_ENVIRONMENT "GIT_CONFIG_LOCAL"
251#define EXEC_PATH_ENVIRONMENT "GIT_EXEC_PATH"
252#define GITATTRIBUTES_FILE ".gitattributes"
253#define INFOATTRIBUTES_FILE "info/attributes"
254#define ATTRIBUTE_MACRO_PREFIX "[attr]"
255
256extern int is_bare_repository_cfg;
257extern int is_bare_repository(void);
258extern int is_inside_git_dir(void);
259extern char *git_work_tree_cfg;
260extern int is_inside_work_tree(void);
261extern const char *get_git_dir(void);
262extern char *get_object_directory(void);
263extern char *get_refs_directory(void);
264extern char *get_index_file(void);
265extern char *get_graft_file(void);
266extern int set_git_dir(const char *path);
267extern const char *get_git_work_tree(void);
268
269#define ALTERNATE_DB_ENVIRONMENT "GIT_ALTERNATE_OBJECT_DIRECTORIES"
270
271extern const char **get_pathspec(const char *prefix, const char **pathspec);
272extern void setup_work_tree(void);
273extern const char *setup_git_directory_gently(int *);
274extern const char *setup_git_directory(void);
275extern const char *prefix_path(const char *prefix, int len, const char *path);
276extern const char *prefix_filename(const char *prefix, int len, const char *path);
277extern void verify_filename(const char *prefix, const char *name);
278extern void verify_non_filename(const char *prefix, const char *name);
279
280#define alloc_nr(x) (((x)+16)*3/2)
281
282/*
283 * Realloc the buffer pointed at by variable 'x' so that it can hold
284 * at least 'nr' entries; the number of entries currently allocated
285 * is 'alloc', using the standard growing factor alloc_nr() macro.
286 *
287 * DO NOT USE any expression with side-effect for 'x' or 'alloc'.
288 */
289#define ALLOC_GROW(x, nr, alloc) \
290 do { \
291 if ((nr) > alloc) { \
292 if (alloc_nr(alloc) < (nr)) \
293 alloc = (nr); \
294 else \
295 alloc = alloc_nr(alloc); \
296 x = xrealloc((x), alloc * sizeof(*(x))); \
297 } \
298 } while(0)
299
300/* Initialize and use the cache information */
301extern int read_index(struct index_state *);
302extern int read_index_from(struct index_state *, const char *path);
303extern int write_index(struct index_state *, int newfd);
304extern int discard_index(struct index_state *);
305extern int verify_path(const char *path);
306extern int index_name_exists(struct index_state *istate, const char *name, int namelen);
307extern int index_name_pos(struct index_state *, const char *name, int namelen);
308#define ADD_CACHE_OK_TO_ADD 1 /* Ok to add */
309#define ADD_CACHE_OK_TO_REPLACE 2 /* Ok to replace file/directory */
310#define ADD_CACHE_SKIP_DFCHECK 4 /* Ok to skip DF conflict checks */
311#define ADD_CACHE_JUST_APPEND 8 /* Append only; tree.c::read_tree() */
312extern int add_index_entry(struct index_state *, struct cache_entry *ce, int option);
313extern struct cache_entry *refresh_cache_entry(struct cache_entry *ce, int really);
314extern int remove_index_entry_at(struct index_state *, int pos);
315extern int remove_file_from_index(struct index_state *, const char *path);
316extern int add_file_to_index(struct index_state *, const char *path, int verbose);
317extern struct cache_entry *make_cache_entry(unsigned int mode, const unsigned char *sha1, const char *path, int stage, int refresh);
318extern int ce_same_name(struct cache_entry *a, struct cache_entry *b);
319
320/* do stat comparison even if CE_VALID is true */
321#define CE_MATCH_IGNORE_VALID 01
322/* do not check the contents but report dirty on racily-clean entries */
323#define CE_MATCH_RACY_IS_DIRTY 02
324extern int ie_match_stat(struct index_state *, struct cache_entry *, struct stat *, unsigned int);
325extern int ie_modified(struct index_state *, struct cache_entry *, struct stat *, unsigned int);
326
327extern int ce_path_match(const struct cache_entry *ce, const char **pathspec);
328extern int index_fd(unsigned char *sha1, int fd, struct stat *st, int write_object, enum object_type type, const char *path);
329extern int index_pipe(unsigned char *sha1, int fd, const char *type, int write_object);
330extern int index_path(unsigned char *sha1, const char *path, struct stat *st, int write_object);
331extern void fill_stat_cache_info(struct cache_entry *ce, struct stat *st);
332
333#define REFRESH_REALLY 0x0001 /* ignore_valid */
334#define REFRESH_UNMERGED 0x0002 /* allow unmerged */
335#define REFRESH_QUIET 0x0004 /* be quiet about it */
336#define REFRESH_IGNORE_MISSING 0x0008 /* ignore non-existent */
337extern int refresh_index(struct index_state *, unsigned int flags, const char **pathspec, char *seen);
338
339struct lock_file {
340 struct lock_file *next;
341 int fd;
342 pid_t owner;
343 char on_list;
344 char filename[PATH_MAX];
345};
346extern int hold_lock_file_for_update(struct lock_file *, const char *path, int);
347extern int commit_lock_file(struct lock_file *);
348
349extern int hold_locked_index(struct lock_file *, int);
350extern int commit_locked_index(struct lock_file *);
351extern void set_alternate_index_output(const char *);
352extern int close_lock_file(struct lock_file *);
353extern void rollback_lock_file(struct lock_file *);
354extern int delete_ref(const char *, const unsigned char *sha1);
355
356/* Environment bits from configuration mechanism */
357extern int trust_executable_bit;
358extern int quote_path_fully;
359extern int has_symlinks;
360extern int assume_unchanged;
361extern int prefer_symlink_refs;
362extern int log_all_ref_updates;
363extern int warn_ambiguous_refs;
364extern int shared_repository;
365extern const char *apply_default_whitespace;
366extern int zlib_compression_level;
367extern int core_compression_level;
368extern int core_compression_seen;
369extern size_t packed_git_window_size;
370extern size_t packed_git_limit;
371extern size_t delta_base_cache_limit;
372extern int auto_crlf;
373
374#define GIT_REPO_VERSION 0
375extern int repository_format_version;
376extern int check_repository_format(void);
377
378#define MTIME_CHANGED 0x0001
379#define CTIME_CHANGED 0x0002
380#define OWNER_CHANGED 0x0004
381#define MODE_CHANGED 0x0008
382#define INODE_CHANGED 0x0010
383#define DATA_CHANGED 0x0020
384#define TYPE_CHANGED 0x0040
385
386/* Return a statically allocated filename matching the sha1 signature */
387extern char *mkpath(const char *fmt, ...) __attribute__((format (printf, 1, 2)));
388extern char *git_path(const char *fmt, ...) __attribute__((format (printf, 1, 2)));
389extern char *sha1_file_name(const unsigned char *sha1);
390extern char *sha1_pack_name(const unsigned char *sha1);
391extern char *sha1_pack_index_name(const unsigned char *sha1);
392extern const char *find_unique_abbrev(const unsigned char *sha1, int);
393extern const unsigned char null_sha1[20];
394static inline int is_null_sha1(const unsigned char *sha1)
395{
396 return !memcmp(sha1, null_sha1, 20);
397}
398static inline int hashcmp(const unsigned char *sha1, const unsigned char *sha2)
399{
400 return memcmp(sha1, sha2, 20);
401}
402static inline void hashcpy(unsigned char *sha_dst, const unsigned char *sha_src)
403{
404 memcpy(sha_dst, sha_src, 20);
405}
406static inline void hashclr(unsigned char *hash)
407{
408 memset(hash, 0, 20);
409}
410
411int git_mkstemp(char *path, size_t n, const char *template);
412
413enum sharedrepo {
414 PERM_UMASK = 0,
415 PERM_GROUP,
416 PERM_EVERYBODY
417};
418int git_config_perm(const char *var, const char *value);
419int adjust_shared_perm(const char *path);
420int safe_create_leading_directories(char *path);
421char *enter_repo(char *path, int strict);
422static inline int is_absolute_path(const char *path)
423{
424 return path[0] == '/';
425}
426const char *make_absolute_path(const char *path);
427
428/* Read and unpack a sha1 file into memory, write memory to a sha1 file */
429extern int sha1_object_info(const unsigned char *, unsigned long *);
430extern void * read_sha1_file(const unsigned char *sha1, enum object_type *type, unsigned long *size);
431extern int hash_sha1_file(const void *buf, unsigned long len, const char *type, unsigned char *sha1);
432extern int write_sha1_file(void *buf, unsigned long len, const char *type, unsigned char *return_sha1);
433extern int pretend_sha1_file(void *, unsigned long, enum object_type, unsigned char *);
434
435extern int check_sha1_signature(const unsigned char *sha1, void *buf, unsigned long size, const char *type);
436
437extern int write_sha1_from_fd(const unsigned char *sha1, int fd, char *buffer,
438 size_t bufsize, size_t *bufposn);
439extern int write_sha1_to_fd(int fd, const unsigned char *sha1);
440extern int move_temp_to_file(const char *tmpfile, const char *filename);
441
442extern int has_sha1_pack(const unsigned char *sha1, const char **ignore);
443extern int has_sha1_file(const unsigned char *sha1);
444
445extern int has_pack_file(const unsigned char *sha1);
446extern int has_pack_index(const unsigned char *sha1);
447
448extern const signed char hexval_table[256];
449static inline unsigned int hexval(unsigned char c)
450{
451 return hexval_table[c];
452}
453
454/* Convert to/from hex/sha1 representation */
455#define MINIMUM_ABBREV 4
456#define DEFAULT_ABBREV 7
457
458extern int get_sha1(const char *str, unsigned char *sha1);
459extern int get_sha1_with_mode(const char *str, unsigned char *sha1, unsigned *mode);
460extern int get_sha1_hex(const char *hex, unsigned char *sha1);
461extern char *sha1_to_hex(const unsigned char *sha1); /* static buffer result! */
462extern int read_ref(const char *filename, unsigned char *sha1);
463extern const char *resolve_ref(const char *path, unsigned char *sha1, int, int *);
464extern int dwim_ref(const char *str, int len, unsigned char *sha1, char **ref);
465extern int dwim_log(const char *str, int len, unsigned char *sha1, char **ref);
466
467extern int refname_match(const char *abbrev_name, const char *full_name, const char **rules);
468extern const char *ref_rev_parse_rules[];
469extern const char *ref_fetch_rules[];
470
471extern int create_symref(const char *ref, const char *refs_heads_master, const char *logmsg);
472extern int validate_headref(const char *ref);
473
474extern int base_name_compare(const char *name1, int len1, int mode1, const char *name2, int len2, int mode2);
475extern int cache_name_compare(const char *name1, int len1, const char *name2, int len2);
476
477extern void *read_object_with_reference(const unsigned char *sha1,
478 const char *required_type,
479 unsigned long *size,
480 unsigned char *sha1_ret);
481
482enum date_mode {
483 DATE_NORMAL = 0,
484 DATE_RELATIVE,
485 DATE_SHORT,
486 DATE_LOCAL,
487 DATE_ISO8601,
488 DATE_RFC2822
489};
490
491const char *show_date(unsigned long time, int timezone, enum date_mode mode);
492int parse_date(const char *date, char *buf, int bufsize);
493void datestamp(char *buf, int bufsize);
494unsigned long approxidate(const char *);
495enum date_mode parse_date_format(const char *format);
496
497#define IDENT_WARN_ON_NO_NAME 1
498#define IDENT_ERROR_ON_NO_NAME 2
499#define IDENT_NO_DATE 4
500extern const char *git_author_info(int);
501extern const char *git_committer_info(int);
502extern const char *fmt_ident(const char *name, const char *email, const char *date_str, int);
503extern const char *fmt_name(const char *name, const char *email);
504
505struct checkout {
506 const char *base_dir;
507 int base_dir_len;
508 unsigned force:1,
509 quiet:1,
510 not_new:1,
511 refresh_cache:1;
512};
513
514extern int checkout_entry(struct cache_entry *ce, const struct checkout *state, char *topath);
515extern int has_symlink_leading_path(const char *name, char *last_symlink);
516
517extern struct alternate_object_database {
518 struct alternate_object_database *next;
519 char *name;
520 char base[FLEX_ARRAY]; /* more */
521} *alt_odb_list;
522extern void prepare_alt_odb(void);
523
524struct pack_window {
525 struct pack_window *next;
526 unsigned char *base;
527 off_t offset;
528 size_t len;
529 unsigned int last_used;
530 unsigned int inuse_cnt;
531};
532
533extern struct packed_git {
534 struct packed_git *next;
535 struct pack_window *windows;
536 off_t pack_size;
537 const void *index_data;
538 size_t index_size;
539 uint32_t num_objects;
540 int index_version;
541 time_t mtime;
542 int pack_fd;
543 int pack_local;
544 unsigned char sha1[20];
545 /* something like ".git/objects/pack/xxxxx.pack" */
546 char pack_name[FLEX_ARRAY]; /* more */
547} *packed_git;
548
549struct pack_entry {
550 off_t offset;
551 unsigned char sha1[20];
552 struct packed_git *p;
553};
554
555struct ref {
556 struct ref *next;
557 unsigned char old_sha1[20];
558 unsigned char new_sha1[20];
559 unsigned int force:1,
560 merge:1,
561 nonfastforward:1,
562 deletion:1;
563 enum {
564 REF_STATUS_NONE = 0,
565 REF_STATUS_OK,
566 REF_STATUS_REJECT_NONFASTFORWARD,
567 REF_STATUS_REJECT_NODELETE,
568 REF_STATUS_UPTODATE,
569 REF_STATUS_REMOTE_REJECT,
570 REF_STATUS_EXPECTING_REPORT,
571 } status;
572 char *remote_status;
573 struct ref *peer_ref; /* when renaming */
574 char name[FLEX_ARRAY]; /* more */
575};
576
577#define REF_NORMAL (1u << 0)
578#define REF_HEADS (1u << 1)
579#define REF_TAGS (1u << 2)
580
581extern struct ref *find_ref_by_name(struct ref *list, const char *name);
582
583#define CONNECT_VERBOSE (1u << 0)
584extern struct child_process *git_connect(int fd[2], const char *url, const char *prog, int flags);
585extern int finish_connect(struct child_process *conn);
586extern int path_match(const char *path, int nr, char **match);
587extern int get_ack(int fd, unsigned char *result_sha1);
588extern struct ref **get_remote_heads(int in, struct ref **list, int nr_match, char **match, unsigned int flags);
589extern int server_supports(const char *feature);
590
591extern struct packed_git *parse_pack_index(unsigned char *sha1);
592extern struct packed_git *parse_pack_index_file(const unsigned char *sha1,
593 const char *idx_path);
594
595extern void prepare_packed_git(void);
596extern void reprepare_packed_git(void);
597extern void install_packed_git(struct packed_git *pack);
598
599extern struct packed_git *find_sha1_pack(const unsigned char *sha1,
600 struct packed_git *packs);
601
602extern void pack_report(void);
603extern int open_pack_index(struct packed_git *);
604extern unsigned char* use_pack(struct packed_git *, struct pack_window **, off_t, unsigned int *);
605extern void close_pack_windows(struct packed_git *);
606extern void unuse_pack(struct pack_window **);
607extern struct packed_git *add_packed_git(const char *, int, int);
608extern const unsigned char *nth_packed_object_sha1(struct packed_git *, uint32_t);
609extern off_t find_pack_entry_one(const unsigned char *, struct packed_git *);
610extern void *unpack_entry(struct packed_git *, off_t, enum object_type *, unsigned long *);
611extern unsigned long unpack_object_header_gently(const unsigned char *buf, unsigned long len, enum object_type *type, unsigned long *sizep);
612extern unsigned long get_size_from_delta(struct packed_git *, struct pack_window **, off_t);
613extern const char *packed_object_info_detail(struct packed_git *, off_t, unsigned long *, unsigned long *, unsigned int *, unsigned char *);
614extern int matches_pack_name(struct packed_git *p, const char *name);
615
616/* Dumb servers support */
617extern int update_server_info(int);
618
619typedef int (*config_fn_t)(const char *, const char *);
620extern int git_default_config(const char *, const char *);
621extern int git_config_from_file(config_fn_t fn, const char *);
622extern int git_config(config_fn_t fn);
623extern int git_parse_long(const char *, long *);
624extern int git_parse_ulong(const char *, unsigned long *);
625extern int git_config_int(const char *, const char *);
626extern unsigned long git_config_ulong(const char *, const char *);
627extern int git_config_bool(const char *, const char *);
628extern int git_config_set(const char *, const char *);
629extern int git_config_set_multivar(const char *, const char *, const char *, int);
630extern int git_config_rename_section(const char *, const char *);
631extern const char *git_etc_gitconfig(void);
632extern int check_repository_format_version(const char *var, const char *value);
633
634#define MAX_GITNAME (1000)
635extern char git_default_email[MAX_GITNAME];
636extern char git_default_name[MAX_GITNAME];
637
638extern const char *git_commit_encoding;
639extern const char *git_log_output_encoding;
640
641/* IO helper functions */
642extern void maybe_flush_or_die(FILE *, const char *);
643extern int copy_fd(int ifd, int ofd);
644extern int read_in_full(int fd, void *buf, size_t count);
645extern int write_in_full(int fd, const void *buf, size_t count);
646extern void write_or_die(int fd, const void *buf, size_t count);
647extern int write_or_whine(int fd, const void *buf, size_t count, const char *msg);
648extern int write_or_whine_pipe(int fd, const void *buf, size_t count, const char *msg);
649
650/* pager.c */
651extern void setup_pager(void);
652extern char *pager_program;
653extern int pager_in_use(void);
654extern int pager_use_color;
655
656extern char *editor_program;
657extern char *excludes_file;
658
659/* base85 */
660int decode_85(char *dst, const char *line, int linelen);
661void encode_85(char *buf, const unsigned char *data, int bytes);
662
663/* alloc.c */
664extern void *alloc_blob_node(void);
665extern void *alloc_tree_node(void);
666extern void *alloc_commit_node(void);
667extern void *alloc_tag_node(void);
668extern void *alloc_object_node(void);
669extern void alloc_report(void);
670
671/* trace.c */
672extern void trace_printf(const char *format, ...);
673extern void trace_argv_printf(const char **argv, const char *format, ...);
674
675/* convert.c */
676/* returns 1 if *dst was used */
677extern int convert_to_git(const char *path, const char *src, size_t len, struct strbuf *dst);
678extern int convert_to_working_tree(const char *path, const char *src, size_t len, struct strbuf *dst);
679
680/* add */
681void add_files_to_cache(int verbose, const char *prefix, const char **pathspec);
682
683/* diff.c */
684extern int diff_auto_refresh_index;
685
686/* match-trees.c */
687void shift_tree(const unsigned char *, const unsigned char *, unsigned char *, int);
688
689/*
690 * whitespace rules.
691 * used by both diff and apply
692 */
693#define WS_TRAILING_SPACE 01
694#define WS_SPACE_BEFORE_TAB 02
695#define WS_INDENT_WITH_NON_TAB 04
696#define WS_DEFAULT_RULE (WS_TRAILING_SPACE|WS_SPACE_BEFORE_TAB)
697extern unsigned whitespace_rule_cfg;
698extern unsigned whitespace_rule(const char *);
699extern unsigned parse_whitespace_rule(const char *);
700extern unsigned check_and_emit_line(const char *line, int len, unsigned ws_rule,
701 FILE *stream, const char *set,
702 const char *reset, const char *ws);
703extern char *whitespace_error_string(unsigned ws);
704
705/* ls-files */
706int pathspec_match(const char **spec, char *matched, const char *filename, int skiplen);
707int report_path_error(const char *ps_matched, const char **pathspec, int prefix_offset);
708void overlay_tree_on_cache(const char *tree_name, const char *prefix);
709
710#endif /* CACHE_H */