4 #include "git-compat-util.h"
9 #if ZLIB_VERNUM < 0x1200
10 #define deflateBound(c,s) ((s) + (((s) + 7) >> 3) + (((s) + 63) >> 6) + 11)
13 #if defined(DT_UNKNOWN) && !defined(NO_D_TYPE_IN_DIRENT)
14 #define DTYPE(de) ((de)->d_type)
24 #define DTYPE(de) DT_UNKNOWN
28 * Intensive research over the course of many years has shown that
29 * port 9418 is totally unused by anything else. Or
31 * Your search - "port 9418" - did not match any documents.
33 * as www.google.com puts it.
35 * This port has been properly assigned for git use by IANA:
36 * git (Assigned-9418) [I06-050728-0001].
38 * git 9418/tcp git pack transfer service
39 * git 9418/udp git pack transfer service
41 * with Linus Torvalds <torvalds@osdl.org> as the point of
42 * contact. September 2005.
44 * See http://www.iana.org/assignments/port-numbers
46 #define DEFAULT_GIT_PORT 9418
49 * Basic data structures for the directory cache
52 #define CACHE_SIGNATURE 0x44495243 /* "DIRC" */
54 unsigned int hdr_signature
;
55 unsigned int hdr_version
;
56 unsigned int hdr_entries
;
60 * The "cache_time" is just the low 32 bits of the
61 * time. It doesn't matter if it overflows - we only
62 * check it for equality in the 32 bits we save.
70 * dev/ino/uid/gid/size are also just tracked to the low 32 bits
71 * Again - this is just a (very strong in practice) heuristic that
72 * the inode hasn't changed.
74 * We save the fields in big-endian order to allow using the
75 * index file over NFS transparently.
78 struct cache_time ce_ctime
;
79 struct cache_time ce_mtime
;
86 unsigned char sha1
[20];
87 unsigned short ce_flags
;
88 char name
[FLEX_ARRAY
]; /* more */
91 #define CE_NAMEMASK (0x0fff)
92 #define CE_STAGEMASK (0x3000)
93 #define CE_UPDATE (0x4000)
94 #define CE_VALID (0x8000)
95 #define CE_STAGESHIFT 12
97 #define create_ce_flags(len, stage) htons((len) | ((stage) << CE_STAGESHIFT))
98 #define ce_namelen(ce) (CE_NAMEMASK & ntohs((ce)->ce_flags))
99 #define ce_size(ce) cache_entry_size(ce_namelen(ce))
100 #define ce_stage(ce) ((CE_STAGEMASK & ntohs((ce)->ce_flags)) >> CE_STAGESHIFT)
102 #define ce_permissions(mode) (((mode) & 0100) ? 0755 : 0644)
103 static inline unsigned int create_ce_mode(unsigned int mode
)
106 return htonl(S_IFLNK
);
107 return htonl(S_IFREG
| ce_permissions(mode
));
109 #define canon_mode(mode) \
110 (S_ISREG(mode) ? (S_IFREG | ce_permissions(mode)) : \
111 S_ISLNK(mode) ? S_IFLNK : S_IFDIR)
113 #define cache_entry_size(len) ((offsetof(struct cache_entry,name) + (len) + 8) & ~7)
115 extern struct cache_entry
**active_cache
;
116 extern unsigned int active_nr
, active_alloc
, active_cache_changed
;
117 extern struct cache_tree
*active_cache_tree
;
118 extern int cache_errno
;
120 #define GIT_DIR_ENVIRONMENT "GIT_DIR"
121 #define DEFAULT_GIT_DIR_ENVIRONMENT ".git"
122 #define DB_ENVIRONMENT "GIT_OBJECT_DIRECTORY"
123 #define INDEX_ENVIRONMENT "GIT_INDEX_FILE"
124 #define GRAFT_ENVIRONMENT "GIT_GRAFT_FILE"
126 extern char *get_git_dir(void);
127 extern char *get_object_directory(void);
128 extern char *get_refs_directory(void);
129 extern char *get_index_file(void);
130 extern char *get_graft_file(void);
132 #define ALTERNATE_DB_ENVIRONMENT "GIT_ALTERNATE_OBJECT_DIRECTORIES"
134 extern const char **get_pathspec(const char *prefix
, const char **pathspec
);
135 extern const char *setup_git_directory_gently(int *);
136 extern const char *setup_git_directory(void);
137 extern const char *prefix_path(const char *prefix
, int len
, const char *path
);
138 extern const char *prefix_filename(const char *prefix
, int len
, const char *path
);
139 extern void verify_filename(const char *prefix
, const char *name
);
140 extern void verify_non_filename(const char *prefix
, const char *name
);
142 #define alloc_nr(x) (((x)+16)*3/2)
144 /* Initialize and use the cache information */
145 extern int read_cache(void);
146 extern int read_cache_from(const char *path
);
147 extern int write_cache(int newfd
, struct cache_entry
**cache
, int entries
);
148 extern int verify_path(const char *path
);
149 extern int cache_name_pos(const char *name
, int namelen
);
150 #define ADD_CACHE_OK_TO_ADD 1 /* Ok to add */
151 #define ADD_CACHE_OK_TO_REPLACE 2 /* Ok to replace file/directory */
152 #define ADD_CACHE_SKIP_DFCHECK 4 /* Ok to skip DF conflict checks */
153 extern int add_cache_entry(struct cache_entry
*ce
, int option
);
154 extern struct cache_entry
*refresh_cache_entry(struct cache_entry
*ce
, int really
);
155 extern int remove_cache_entry_at(int pos
);
156 extern int remove_file_from_cache(const char *path
);
157 extern int add_file_to_index(const char *path
, int verbose
);
158 extern int ce_same_name(struct cache_entry
*a
, struct cache_entry
*b
);
159 extern int ce_match_stat(struct cache_entry
*ce
, struct stat
*st
, int);
160 extern int ce_modified(struct cache_entry
*ce
, struct stat
*st
, int);
161 extern int ce_path_match(const struct cache_entry
*ce
, const char **pathspec
);
162 extern int index_fd(unsigned char *sha1
, int fd
, struct stat
*st
, int write_object
, const char *type
);
163 extern int read_pipe(int fd
, char** return_buf
, unsigned long* return_size
);
164 extern int index_pipe(unsigned char *sha1
, int fd
, const char *type
, int write_object
);
165 extern int index_path(unsigned char *sha1
, const char *path
, struct stat
*st
, int write_object
);
166 extern void fill_stat_cache_info(struct cache_entry
*ce
, struct stat
*st
);
168 #define REFRESH_REALLY 0x0001 /* ignore_valid */
169 #define REFRESH_UNMERGED 0x0002 /* allow unmerged */
170 #define REFRESH_QUIET 0x0004 /* be quiet about it */
171 #define REFRESH_IGNORE_MISSING 0x0008 /* ignore non-existent */
172 extern int refresh_cache(unsigned int flags
);
175 struct lock_file
*next
;
176 char filename
[PATH_MAX
];
178 extern int hold_lock_file_for_update(struct lock_file
*, const char *path
, int);
179 extern int commit_lock_file(struct lock_file
*);
180 extern void rollback_lock_file(struct lock_file
*);
182 /* Environment bits from configuration mechanism */
183 extern int use_legacy_headers
;
184 extern int trust_executable_bit
;
185 extern int assume_unchanged
;
186 extern int prefer_symlink_refs
;
187 extern int log_all_ref_updates
;
188 extern int warn_ambiguous_refs
;
189 extern int shared_repository
;
190 extern const char *apply_default_whitespace
;
191 extern int zlib_compression_level
;
193 #define GIT_REPO_VERSION 0
194 extern int repository_format_version
;
195 extern int check_repository_format(void);
197 #define MTIME_CHANGED 0x0001
198 #define CTIME_CHANGED 0x0002
199 #define OWNER_CHANGED 0x0004
200 #define MODE_CHANGED 0x0008
201 #define INODE_CHANGED 0x0010
202 #define DATA_CHANGED 0x0020
203 #define TYPE_CHANGED 0x0040
205 /* Return a statically allocated filename matching the sha1 signature */
206 extern char *mkpath(const char *fmt
, ...) __attribute__((format (printf
, 1, 2)));
207 extern char *git_path(const char *fmt
, ...) __attribute__((format (printf
, 1, 2)));
208 extern char *sha1_file_name(const unsigned char *sha1
);
209 extern char *sha1_pack_name(const unsigned char *sha1
);
210 extern char *sha1_pack_index_name(const unsigned char *sha1
);
211 extern const char *find_unique_abbrev(const unsigned char *sha1
, int);
212 extern const unsigned char null_sha1
[20];
213 static inline int is_null_sha1(const unsigned char *sha1
)
215 return !memcmp(sha1
, null_sha1
, 20);
217 static inline int hashcmp(const unsigned char *sha1
, const unsigned char *sha2
)
219 return memcmp(sha1
, sha2
, 20);
222 int git_mkstemp(char *path
, size_t n
, const char *template);
229 int git_config_perm(const char *var
, const char *value
);
230 int adjust_shared_perm(const char *path
);
231 int safe_create_leading_directories(char *path
);
232 char *enter_repo(char *path
, int strict
);
234 /* Read and unpack a sha1 file into memory, write memory to a sha1 file */
235 extern int sha1_object_info(const unsigned char *, char *, unsigned long *);
236 extern void * unpack_sha1_file(void *map
, unsigned long mapsize
, char *type
, unsigned long *size
);
237 extern void * read_sha1_file(const unsigned char *sha1
, char *type
, unsigned long *size
);
238 extern int write_sha1_file(void *buf
, unsigned long len
, const char *type
, unsigned char *return_sha1
);
239 extern char *write_sha1_file_prepare(void *buf
,
246 extern int check_sha1_signature(const unsigned char *sha1
, void *buf
, unsigned long size
, const char *type
);
248 extern int write_sha1_from_fd(const unsigned char *sha1
, int fd
, char *buffer
,
249 size_t bufsize
, size_t *bufposn
);
250 extern int write_sha1_to_fd(int fd
, const unsigned char *sha1
);
251 extern int move_temp_to_file(const char *tmpfile
, char *filename
);
253 extern int has_sha1_pack(const unsigned char *sha1
);
254 extern int has_sha1_file(const unsigned char *sha1
);
255 extern void *map_sha1_file(const unsigned char *sha1
, unsigned long *);
256 extern int legacy_loose_object(unsigned char *);
258 extern int has_pack_file(const unsigned char *sha1
);
259 extern int has_pack_index(const unsigned char *sha1
);
261 /* Convert to/from hex/sha1 representation */
262 #define MINIMUM_ABBREV 4
263 #define DEFAULT_ABBREV 7
265 extern int get_sha1(const char *str
, unsigned char *sha1
);
266 extern int get_sha1_hex(const char *hex
, unsigned char *sha1
);
267 extern char *sha1_to_hex(const unsigned char *sha1
); /* static buffer result! */
268 extern int read_ref(const char *filename
, unsigned char *sha1
);
269 extern const char *resolve_ref(const char *path
, unsigned char *sha1
, int);
270 extern int create_symref(const char *git_HEAD
, const char *refs_heads_master
);
271 extern int validate_symref(const char *git_HEAD
);
273 extern int base_name_compare(const char *name1
, int len1
, int mode1
, const char *name2
, int len2
, int mode2
);
274 extern int cache_name_compare(const char *name1
, int len1
, const char *name2
, int len2
);
276 extern void *read_object_with_reference(const unsigned char *sha1
,
277 const char *required_type
,
279 unsigned char *sha1_ret
);
281 const char *show_date(unsigned long time
, int timezone
);
282 const char *show_rfc2822_date(unsigned long time
, int timezone
);
283 int parse_date(const char *date
, char *buf
, int bufsize
);
284 void datestamp(char *buf
, int bufsize
);
285 unsigned long approxidate(const char *);
287 extern int setup_ident(void);
288 extern const char *git_author_info(int);
289 extern const char *git_committer_info(int);
292 const char *base_dir
;
300 extern int checkout_entry(struct cache_entry
*ce
, struct checkout
*state
, char *topath
);
302 extern struct alternate_object_database
{
303 struct alternate_object_database
*next
;
305 char base
[FLEX_ARRAY
]; /* more */
307 extern void prepare_alt_odb(void);
309 extern struct packed_git
{
310 struct packed_git
*next
;
311 unsigned long index_size
;
312 unsigned long pack_size
;
313 unsigned int *index_base
;
315 unsigned int pack_last_used
;
316 unsigned int pack_use_cnt
;
318 unsigned char sha1
[20];
319 /* something like ".git/objects/pack/xxxxx.pack" */
320 char pack_name
[FLEX_ARRAY
]; /* more */
325 unsigned char sha1
[20];
326 struct packed_git
*p
;
331 unsigned char old_sha1
[20];
332 unsigned char new_sha1
[20];
334 struct ref
*peer_ref
; /* when renaming */
335 char name
[FLEX_ARRAY
]; /* more */
338 #define REF_NORMAL (1u << 0)
339 #define REF_HEADS (1u << 1)
340 #define REF_TAGS (1u << 2)
342 extern int git_connect(int fd
[2], char *url
, const char *prog
);
343 extern int finish_connect(pid_t pid
);
344 extern int path_match(const char *path
, int nr
, char **match
);
345 extern int match_refs(struct ref
*src
, struct ref
*dst
, struct ref
***dst_tail
,
346 int nr_refspec
, char **refspec
, int all
);
347 extern int get_ack(int fd
, unsigned char *result_sha1
);
348 extern struct ref
**get_remote_heads(int in
, struct ref
**list
, int nr_match
, char **match
, unsigned int flags
);
349 extern int server_supports(const char *feature
);
351 extern struct packed_git
*parse_pack_index(unsigned char *sha1
);
352 extern struct packed_git
*parse_pack_index_file(const unsigned char *sha1
,
355 extern void prepare_packed_git(void);
356 extern void install_packed_git(struct packed_git
*pack
);
358 extern struct packed_git
*find_sha1_pack(const unsigned char *sha1
,
359 struct packed_git
*packs
);
361 extern int use_packed_git(struct packed_git
*);
362 extern void unuse_packed_git(struct packed_git
*);
363 extern struct packed_git
*add_packed_git(char *, int, int);
364 extern int num_packed_objects(const struct packed_git
*p
);
365 extern int nth_packed_object_sha1(const struct packed_git
*, int, unsigned char*);
366 extern int find_pack_entry_one(const unsigned char *, struct pack_entry
*, struct packed_git
*);
367 extern void *unpack_entry_gently(struct pack_entry
*, char *, unsigned long *);
368 extern void packed_object_info_detail(struct pack_entry
*, char *, unsigned long *, unsigned long *, unsigned int *, unsigned char *);
370 /* Dumb servers support */
371 extern int update_server_info(int);
373 typedef int (*config_fn_t
)(const char *, const char *);
374 extern int git_default_config(const char *, const char *);
375 extern int git_config_from_file(config_fn_t fn
, const char *);
376 extern int git_config(config_fn_t fn
);
377 extern int git_config_int(const char *, const char *);
378 extern int git_config_bool(const char *, const char *);
379 extern int git_config_set(const char *, const char *);
380 extern int git_config_set_multivar(const char *, const char *, const char *, int);
381 extern int check_repository_format_version(const char *var
, const char *value
);
383 #define MAX_GITNAME (1000)
384 extern char git_default_email
[MAX_GITNAME
];
385 extern char git_default_name
[MAX_GITNAME
];
387 #define MAX_ENCODING_LENGTH 64
388 extern char git_commit_encoding
[MAX_ENCODING_LENGTH
];
390 extern int copy_fd(int ifd
, int ofd
);
392 /* Finish off pack transfer receiving end */
393 extern int receive_unpack_pack(int fd
[2], const char *me
, int quiet
, int);
394 extern int receive_keep_pack(int fd
[2], const char *me
, int quiet
, int);
397 extern void setup_pager(void);
398 extern int pager_in_use
;
399 extern int pager_use_color
;
402 int decode_85(char *dst
, char *line
, int linelen
);
403 void encode_85(char *buf
, unsigned char *data
, int bytes
);
410 extern struct blob
*alloc_blob_node(void);
411 extern struct tree
*alloc_tree_node(void);
412 extern struct commit
*alloc_commit_node(void);
413 extern struct tag
*alloc_tag_node(void);
414 extern void alloc_report(void);