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;
118 #define GIT_DIR_ENVIRONMENT "GIT_DIR"
119 #define DEFAULT_GIT_DIR_ENVIRONMENT ".git"
120 #define DB_ENVIRONMENT "GIT_OBJECT_DIRECTORY"
121 #define INDEX_ENVIRONMENT "GIT_INDEX_FILE"
122 #define GRAFT_ENVIRONMENT "GIT_GRAFT_FILE"
124 extern char *get_git_dir(void);
125 extern char *get_object_directory(void);
126 extern char *get_refs_directory(void);
127 extern char *get_index_file(void);
128 extern char *get_graft_file(void);
130 #define ALTERNATE_DB_ENVIRONMENT "GIT_ALTERNATE_OBJECT_DIRECTORIES"
132 extern const char **get_pathspec(const char *prefix, const char **pathspec);
133 extern const char *setup_git_directory_gently(int *);
134 extern const char *setup_git_directory(void);
135 extern const char *prefix_path(const char *prefix, int len, const char *path);
136 extern const char *prefix_filename(const char *prefix, int len, const char *path);
138 #define alloc_nr(x) (((x)+16)*3/2)
140 /* Initialize and use the cache information */
141 extern int read_cache(void);
142 extern int write_cache(int newfd, struct cache_entry **cache, int entries);
143 extern int cache_name_pos(const char *name, int namelen);
144 #define ADD_CACHE_OK_TO_ADD 1 /* Ok to add */
145 #define ADD_CACHE_OK_TO_REPLACE 2 /* Ok to replace file/directory */
146 #define ADD_CACHE_SKIP_DFCHECK 4 /* Ok to skip DF conflict checks */
147 extern int add_cache_entry(struct cache_entry *ce, int option);
148 extern int remove_cache_entry_at(int pos);
149 extern int remove_file_from_cache(const char *path);
150 extern int ce_same_name(struct cache_entry *a, struct cache_entry *b);
151 extern int ce_match_stat(struct cache_entry *ce, struct stat *st, int);
152 extern int ce_modified(struct cache_entry *ce, struct stat *st, int);
153 extern int ce_path_match(const struct cache_entry *ce, const char **pathspec);
154 extern int index_fd(unsigned char *sha1, int fd, struct stat *st, int write_object, const char *type);
155 extern int index_pipe(unsigned char *sha1, int fd, const char *type, int write_object);
156 extern int index_path(unsigned char *sha1, const char *path, struct stat *st, int write_object);
157 extern void fill_stat_cache_info(struct cache_entry *ce, struct stat *st);
160 struct cache_file *next;
161 char lockfile[PATH_MAX];
163 extern int hold_index_file_for_update(struct cache_file *, const char *path);
164 extern int commit_index_file(struct cache_file *);
165 extern void rollback_index_file(struct cache_file *);
167 /* Environment bits from configuration mechanism */
168 extern int trust_executable_bit;
169 extern int assume_unchanged;
170 extern int only_use_symrefs;
171 extern int warn_ambiguous_refs;
172 extern int diff_rename_limit_default;
173 extern int shared_repository;
174 extern const char *apply_default_whitespace;
176 #define GIT_REPO_VERSION 0
177 extern int repository_format_version;
178 extern int check_repository_format(void);
180 #define MTIME_CHANGED 0x0001
181 #define CTIME_CHANGED 0x0002
182 #define OWNER_CHANGED 0x0004
183 #define MODE_CHANGED 0x0008
184 #define INODE_CHANGED 0x0010
185 #define DATA_CHANGED 0x0020
186 #define TYPE_CHANGED 0x0040
188 /* Return a statically allocated filename matching the sha1 signature */
189 extern char *mkpath(const char *fmt, ...) __attribute__((format (printf, 1, 2)));
190 extern char *git_path(const char *fmt, ...) __attribute__((format (printf, 1, 2)));
191 extern char *sha1_file_name(const unsigned char *sha1);
192 extern char *sha1_pack_name(const unsigned char *sha1);
193 extern char *sha1_pack_index_name(const unsigned char *sha1);
194 extern const char *find_unique_abbrev(const unsigned char *sha1, int);
195 extern const unsigned char null_sha1[20];
197 int git_mkstemp(char *path, size_t n, const char *template);
199 int adjust_shared_perm(const char *path);
200 int safe_create_leading_directories(char *path);
201 char *safe_strncpy(char *, const char *, size_t);
202 char *enter_repo(char *path, int strict);
204 /* Read and unpack a sha1 file into memory, write memory to a sha1 file */
205 extern int unpack_sha1_header(z_stream *stream, void *map, unsigned long mapsize, void *buffer, unsigned long size);
206 extern int parse_sha1_header(char *hdr, char *type, unsigned long *sizep);
207 extern int sha1_object_info(const unsigned char *, char *, unsigned long *);
208 extern void * unpack_sha1_file(void *map, unsigned long mapsize, char *type, unsigned long *size);
209 extern void * read_sha1_file(const unsigned char *sha1, char *type, unsigned long *size);
210 extern int write_sha1_file(void *buf, unsigned long len, const char *type, unsigned char *return_sha1);
211 extern char *write_sha1_file_prepare(void *buf,
218 extern int check_sha1_signature(const unsigned char *sha1, void *buf, unsigned long size, const char *type);
220 extern int write_sha1_from_fd(const unsigned char *sha1, int fd, char *buffer,
221 size_t bufsize, size_t *bufposn);
222 extern int write_sha1_to_fd(int fd, const unsigned char *sha1);
223 extern int move_temp_to_file(const char *tmpfile, char *filename);
225 extern int has_sha1_pack(const unsigned char *sha1);
226 extern int has_sha1_file(const unsigned char *sha1);
228 extern int has_pack_file(const unsigned char *sha1);
229 extern int has_pack_index(const unsigned char *sha1);
231 /* Convert to/from hex/sha1 representation */
232 #define MINIMUM_ABBREV 4
233 #define DEFAULT_ABBREV 7
235 extern int get_sha1(const char *str, unsigned char *sha1);
236 extern int get_sha1_hex(const char *hex, unsigned char *sha1);
237 extern char *sha1_to_hex(const unsigned char *sha1); /* static buffer result! */
238 extern int read_ref(const char *filename, unsigned char *sha1);
239 extern const char *resolve_ref(const char *path, unsigned char *sha1, int);
240 extern int create_symref(const char *git_HEAD, const char *refs_heads_master);
241 extern int validate_symref(const char *git_HEAD);
243 extern int base_name_compare(const char *name1, int len1, int mode1, const char *name2, int len2, int mode2);
244 extern int cache_name_compare(const char *name1, int len1, const char *name2, int len2);
246 extern void *read_object_with_reference(const unsigned char *sha1,
247 const char *required_type,
249 unsigned char *sha1_ret);
251 const char *show_date(unsigned long time, int timezone);
252 int parse_date(const char *date, char *buf, int bufsize);
253 void datestamp(char *buf, int bufsize);
254 unsigned long approxidate(const char *);
256 extern int setup_ident(void);
257 extern const char *git_author_info(int);
258 extern const char *git_committer_info(int);
261 const char *base_dir;
269 extern int checkout_entry(struct cache_entry *ce, struct checkout *state, char *topath);
271 extern struct alternate_object_database {
272 struct alternate_object_database *next;
274 char base[FLEX_ARRAY]; /* more */
276 extern void prepare_alt_odb(void);
278 extern struct packed_git {
279 struct packed_git *next;
280 unsigned long index_size;
281 unsigned long pack_size;
282 unsigned int *index_base;
284 unsigned int pack_last_used;
285 unsigned int pack_use_cnt;
287 unsigned char sha1[20];
288 /* something like ".git/objects/pack/xxxxx.pack" */
289 char pack_name[FLEX_ARRAY]; /* more */
294 unsigned char sha1[20];
295 struct packed_git *p;
300 unsigned char old_sha1[20];
301 unsigned char new_sha1[20];
303 struct ref *peer_ref; /* when renaming */
304 char name[FLEX_ARRAY]; /* more */
307 extern int git_connect(int fd[2], char *url, const char *prog);
308 extern int finish_connect(pid_t pid);
309 extern int path_match(const char *path, int nr, char **match);
310 extern int match_refs(struct ref *src, struct ref *dst, struct ref ***dst_tail,
311 int nr_refspec, char **refspec, int all);
312 extern int get_ack(int fd, unsigned char *result_sha1);
313 extern struct ref **get_remote_heads(int in, struct ref **list, int nr_match, char **match, int ignore_funny);
314 extern int server_supports(const char *feature);
316 extern struct packed_git *parse_pack_index(unsigned char *sha1);
317 extern struct packed_git *parse_pack_index_file(const unsigned char *sha1,
320 extern void prepare_packed_git(void);
321 extern void install_packed_git(struct packed_git *pack);
323 extern struct packed_git *find_sha1_pack(const unsigned char *sha1,
324 struct packed_git *packs);
326 extern int use_packed_git(struct packed_git *);
327 extern void unuse_packed_git(struct packed_git *);
328 extern struct packed_git *add_packed_git(char *, int, int);
329 extern int num_packed_objects(const struct packed_git *p);
330 extern int nth_packed_object_sha1(const struct packed_git *, int, unsigned char*);
331 extern int find_pack_entry_one(const unsigned char *, struct pack_entry *, struct packed_git *);
332 extern void *unpack_entry_gently(struct pack_entry *, char *, unsigned long *);
333 extern void packed_object_info_detail(struct pack_entry *, char *, unsigned long *, unsigned long *, unsigned int *, unsigned char *);
335 /* Dumb servers support */
336 extern int update_server_info(int);
338 typedef int (*config_fn_t)(const char *, const char *);
339 extern int git_default_config(const char *, const char *);
340 extern int git_config_from_file(config_fn_t fn, const char *);
341 extern int git_config(config_fn_t fn);
342 extern int git_config_int(const char *, const char *);
343 extern int git_config_bool(const char *, const char *);
344 extern int git_config_set(const char *, const char *);
345 extern int git_config_set_multivar(const char *, const char *, const char *, int);
346 extern int check_repository_format_version(const char *var, const char *value);
348 #define MAX_GITNAME (1000)
349 extern char git_default_email[MAX_GITNAME];
350 extern char git_default_name[MAX_GITNAME];
352 #define MAX_ENCODING_LENGTH 64
353 extern char git_commit_encoding[MAX_ENCODING_LENGTH];
355 extern int copy_fd(int ifd, int ofd);
357 /* Finish off pack transfer receiving end */
358 extern int receive_unpack_pack(int fd[2], const char *me, int quiet);
359 extern int receive_keep_pack(int fd[2], const char *me, int quiet);
362 extern void setup_pager(void);