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chromium / external / github.com / git / git / refs/tags/v0.99.9c / . / cache.h
blob: 677c6acc350155d606e2ba05a9bbf5eb28637a31 [file] [log] [blame]
Linus Torvaldse83c5162005-04-07 22:13:13[diff] [blame]1#ifndef CACHE_H
2#define CACHE_H
3
Linus Torvalds2dee0602005-04-20 20:00:08[diff] [blame]4#include <unistd.h>
Linus Torvaldse83c5162005-04-07 22:13:13[diff] [blame]5#include <stdio.h>
6#include <sys/stat.h>
7#include <fcntl.h>
8#include <stddef.h>
9#include <stdlib.h>
10#include <stdarg.h>
Linus Torvaldsbf0c6e82005-04-08 16:16:38[diff] [blame]11#include <string.h>
Linus Torvaldse83c5162005-04-07 22:13:13[diff] [blame]12#include <errno.h>
Linus Torvalds6b0c3122005-05-22 18:54:17[diff] [blame]13#include <limits.h>
Johannes Schindelin730d48a2005-10-08 22:54:36[diff] [blame]14#ifndef NO_MMAP
Linus Torvaldse83c5162005-04-07 22:13:13[diff] [blame]15#include <sys/mman.h>
Johannes Schindelin730d48a2005-10-08 22:54:36[diff] [blame]16#endif
Linus Torvaldsbb233d62005-04-21 17:55:18[diff] [blame]17#include <sys/param.h>
Linus Torvaldsccc4feb2005-04-15 17:44:27[diff] [blame]18#include <netinet/in.h>
Linus Torvalds575f4972005-06-30 00:52:11[diff] [blame]19#include <sys/types.h>
20#include <dirent.h>
Linus Torvaldse83c5162005-04-07 22:13:13[diff] [blame]21
Linus Torvaldscef661f2005-04-21 19:33:22[diff] [blame]22#include SHA1_HEADER
Linus Torvaldse83c5162005-04-07 22:13:13[diff] [blame]23#include <zlib.h>
24
Edgar Toernig9da3acf2005-04-30 16:51:03[diff] [blame]25#if ZLIB_VERNUM < 0x1200
26#define deflateBound(c,s) ((s) + (((s) + 7) >> 3) + (((s) + 63) >> 6) + 11)
27#endif
28
Edgar Toernigb6829692005-04-30 16:51:03[diff] [blame]29#ifdef DT_UNKNOWN
30#define DTYPE(de) ((de)->d_type)
31#else
32#define DT_UNKNOWN 0
33#define DT_DIR 1
34#define DT_REG 2
Junio C Hamanoa15c1c62005-05-13 00:16:04[diff] [blame]35#define DT_LNK 3
Edgar Toernigb6829692005-04-30 16:51:03[diff] [blame]36#define DTYPE(de) DT_UNKNOWN
37#endif
38
Linus Torvalds90334cf2005-06-06 17:12:31[diff] [blame]39#ifdef __GNUC__
40#define NORETURN __attribute__((__noreturn__))
41#else
42#define NORETURN
Timo Sirainen4ec99bf2005-08-09 15:30:22[diff] [blame]43#ifndef __attribute__
Jason Riedy75ea6912005-08-19 04:10:08[diff] [blame]44#define __attribute__(x)
Timo Sirainen4ec99bf2005-08-09 15:30:22[diff] [blame]45#endif
Junio C Hamanof1d090e2005-08-19 09:06:52[diff] [blame]46#endif
Timo Sirainen4ec99bf2005-08-09 15:30:22[diff] [blame]47
Linus Torvaldse83c5162005-04-07 22:13:13[diff] [blame]48/*
Linus Torvalds2386d652005-07-14 01:46:20[diff] [blame]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.
Linus Torvaldsba8a4972005-09-12 18:23:00[diff] [blame]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
Linus Torvalds2386d652005-07-14 01:46:20[diff] [blame]66 */
67#define DEFAULT_GIT_PORT 9418
68
69/*
Linus Torvaldse83c5162005-04-07 22:13:13[diff] [blame]70 * Basic data structures for the directory cache
Linus Torvaldse83c5162005-04-07 22:13:13[diff] [blame]71 */
72
73#define CACHE_SIGNATURE 0x44495243 /* "DIRC" */
74struct cache_header {
Linus Torvaldsccc4feb2005-04-15 17:44:27[diff] [blame]75 unsigned int hdr_signature;
76 unsigned int hdr_version;
77 unsigned int hdr_entries;
Linus Torvaldse83c5162005-04-07 22:13:13[diff] [blame]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.
Linus Torvaldsccc4feb2005-04-15 17:44:27[diff] [blame]94 *
95 * We save the fields in big-endian order to allow using the
96 * index file over NFS transparently.
Linus Torvaldse83c5162005-04-07 22:13:13[diff] [blame]97 */
98struct cache_entry {
Linus Torvaldsccc4feb2005-04-15 17:44:27[diff] [blame]99 struct cache_time ce_ctime;
100 struct cache_time ce_mtime;
101 unsigned int ce_dev;
102 unsigned int ce_ino;
103 unsigned int ce_mode;
104 unsigned int ce_uid;
105 unsigned int ce_gid;
106 unsigned int ce_size;
Linus Torvaldse83c5162005-04-07 22:13:13[diff] [blame]107 unsigned char sha1[20];
Linus Torvaldsf5cabd12005-04-16 04:45:38[diff] [blame]108 unsigned short ce_flags;
Junio C Hamano2c046622005-08-29 19:41:03[diff] [blame]109 char name[0];
Linus Torvaldse83c5162005-04-07 22:13:13[diff] [blame]110};
111
Linus Torvalds95fd5bf2005-04-16 05:51:44[diff] [blame]112#define CE_NAMEMASK (0x0fff)
113#define CE_STAGEMASK (0x3000)
Linus Torvalds220a0b52005-06-06 05:07:31[diff] [blame]114#define CE_UPDATE (0x4000)
Junio C Hamanoaee46192005-04-16 15:33:23[diff] [blame]115#define CE_STAGESHIFT 12
Linus Torvalds95fd5bf2005-04-16 05:51:44[diff] [blame]116
Junio C Hamanoaee46192005-04-16 15:33:23[diff] [blame]117#define create_ce_flags(len, stage) htons((len) | ((stage) << CE_STAGESHIFT))
118#define ce_namelen(ce) (CE_NAMEMASK & ntohs((ce)->ce_flags))
119#define ce_size(ce) cache_entry_size(ce_namelen(ce))
120#define ce_stage(ce) ((CE_STAGEMASK & ntohs((ce)->ce_flags)) >> CE_STAGESHIFT)
121
Linus Torvaldse4479472005-04-17 05:26:31[diff] [blame]122#define ce_permissions(mode) (((mode) & 0100) ? 0755 : 0644)
Kay Sievers8ae0a8c2005-05-05 12:38:25[diff] [blame]123static inline unsigned int create_ce_mode(unsigned int mode)
124{
Kay Sievers8ae0a8c2005-05-05 12:38:25[diff] [blame]125 if (S_ISLNK(mode))
126 return htonl(S_IFLNK);
Linus Torvaldsdb823d42005-05-05 23:01:46[diff] [blame]127 return htonl(S_IFREG | ce_permissions(mode));
Kay Sievers8ae0a8c2005-05-05 12:38:25[diff] [blame]128}
Linus Torvaldse4479472005-04-17 05:26:31[diff] [blame]129
Junio C Hamanoaee46192005-04-16 15:33:23[diff] [blame]130#define cache_entry_size(len) ((offsetof(struct cache_entry,name) + (len) + 8) & ~7)
Linus Torvaldsf5cabd12005-04-16 04:45:38[diff] [blame]131
Petr Baudis88355042005-05-10 22:58:16[diff] [blame]132extern struct cache_entry **active_cache;
133extern unsigned int active_nr, active_alloc, active_cache_changed;
Linus Torvaldse83c5162005-04-07 22:13:13[diff] [blame]134
Junio C Hamano8ac069a2005-05-10 05:57:58[diff] [blame]135#define GIT_DIR_ENVIRONMENT "GIT_DIR"
136#define DEFAULT_GIT_DIR_ENVIRONMENT ".git"
Junio C Hamanod19938a2005-05-10 00:57:56[diff] [blame]137#define DB_ENVIRONMENT "GIT_OBJECT_DIRECTORY"
Linus Torvaldsbb233d62005-04-21 17:55:18[diff] [blame]138#define INDEX_ENVIRONMENT "GIT_INDEX_FILE"
Junio C Hamano5da5c8f2005-07-30 07:58:28[diff] [blame]139#define GRAFT_ENVIRONMENT "GIT_GRAFT_FILE"
Linus Torvaldsbb233d62005-04-21 17:55:18[diff] [blame]140
Sven Verdoolaege5da16062005-09-26 20:54:01[diff] [blame]141extern char *get_git_dir(void);
Junio C Hamano8ac069a2005-05-10 05:57:58[diff] [blame]142extern char *get_object_directory(void);
Daniel Barkalow95fc7512005-06-06 20:31:29[diff] [blame]143extern char *get_refs_directory(void);
Junio C Hamano8ac069a2005-05-10 05:57:58[diff] [blame]144extern char *get_index_file(void);
Junio C Hamano5da5c8f2005-07-30 07:58:28[diff] [blame]145extern char *get_graft_file(void);
Junio C Hamano8ac069a2005-05-10 05:57:58[diff] [blame]146
147#define ALTERNATE_DB_ENVIRONMENT "GIT_ALTERNATE_OBJECT_DIRECTORIES"
Linus Torvaldsbb233d62005-04-21 17:55:18[diff] [blame]148
Junio C Hamano6b5ee132005-09-21 07:00:47[diff] [blame]149extern const char **get_pathspec(const char *prefix, const char **pathspec);
Linus Torvaldsd288a702005-08-17 01:06:34[diff] [blame]150extern const char *setup_git_directory(void);
Junio C Hamano6b5ee132005-09-21 07:00:47[diff] [blame]151extern const char *prefix_path(const char *prefix, int len, const char *path);
Linus Torvaldsd288a702005-08-17 01:06:34[diff] [blame]152
Linus Torvaldse83c5162005-04-07 22:13:13[diff] [blame]153#define alloc_nr(x) (((x)+16)*3/2)
154
Linus Torvalds734aab72005-04-09 16:48:20[diff] [blame]155/* Initialize and use the cache information */
Linus Torvaldse83c5162005-04-07 22:13:13[diff] [blame]156extern int read_cache(void);
Linus Torvalds197ee8c2005-04-09 19:09:27[diff] [blame]157extern int write_cache(int newfd, struct cache_entry **cache, int entries);
Linus Torvaldseb38c222005-04-09 16:26:55[diff] [blame]158extern int cache_name_pos(const char *name, int namelen);
Junio C Hamano192268c2005-05-08 04:55:21[diff] [blame]159#define ADD_CACHE_OK_TO_ADD 1 /* Ok to add */
160#define ADD_CACHE_OK_TO_REPLACE 2 /* Ok to replace file/directory */
Junio C Hamanob1557252005-06-25 09:25:29[diff] [blame]161#define ADD_CACHE_SKIP_DFCHECK 4 /* Ok to skip DF conflict checks */
Junio C Hamano192268c2005-05-08 04:55:21[diff] [blame]162extern int add_cache_entry(struct cache_entry *ce, int option);
Brad Robertsdbbce552005-05-15 02:04:25[diff] [blame]163extern int remove_cache_entry_at(int pos);
Junio C Hamano6b5ee132005-09-21 07:00:47[diff] [blame]164extern int remove_file_from_cache(const char *path);
Brad Robertsdbbce552005-05-15 02:04:25[diff] [blame]165extern int ce_same_name(struct cache_entry *a, struct cache_entry *b);
Brad Roberts5d728c82005-05-15 02:04:25[diff] [blame]166extern int ce_match_stat(struct cache_entry *ce, struct stat *st);
Junio C Hamanob0391892005-09-19 22:11:15[diff] [blame]167extern int ce_modified(struct cache_entry *ce, struct stat *st);
Linus Torvaldsc0fd1f52005-07-14 23:55:06[diff] [blame]168extern int ce_path_match(const struct cache_entry *ce, const char **pathspec);
Bryan Larsen7672db22005-07-08 23:51:55[diff] [blame]169extern int index_fd(unsigned char *sha1, int fd, struct stat *st, int write_object, const char *type);
Junio C Hamanoec1fcc12005-10-07 10:42:00[diff] [blame]170extern int index_path(unsigned char *sha1, const char *path, struct stat *st, int write_object);
Junio C Hamano415e96c2005-05-15 21:23:12[diff] [blame]171extern void fill_stat_cache_info(struct cache_entry *ce, struct stat *st);
172
173struct cache_file {
174 struct cache_file *next;
175 char lockfile[PATH_MAX];
176};
177extern int hold_index_file_for_update(struct cache_file *, const char *path);
178extern int commit_index_file(struct cache_file *);
179extern void rollback_index_file(struct cache_file *);
Linus Torvalds734aab72005-04-09 16:48:20[diff] [blame]180
Linus Torvalds17712992005-10-10 23:31:08[diff] [blame]181extern int trust_executable_bit;
182
Linus Torvalds734aab72005-04-09 16:48:20[diff] [blame]183#define MTIME_CHANGED 0x0001
184#define CTIME_CHANGED 0x0002
185#define OWNER_CHANGED 0x0004
186#define MODE_CHANGED 0x0008
187#define INODE_CHANGED 0x0010
188#define DATA_CHANGED 0x0020
Kay Sievers8ae0a8c2005-05-05 12:38:25[diff] [blame]189#define TYPE_CHANGED 0x0040
Linus Torvaldse83c5162005-04-07 22:13:13[diff] [blame]190
191/* Return a statically allocated filename matching the sha1 signature */
Timo Sirainen4ec99bf2005-08-09 15:30:22[diff] [blame]192extern char *mkpath(const char *fmt, ...) __attribute__((format (printf, 1, 2)));
193extern char *git_path(const char *fmt, ...) __attribute__((format (printf, 1, 2)));
Linus Torvalds73134b62005-04-10 21:03:58[diff] [blame]194extern char *sha1_file_name(const unsigned char *sha1);
barkalow@iabervon.orgbf592c52005-08-01 00:53:44[diff] [blame]195extern char *sha1_pack_name(const unsigned char *sha1);
196extern char *sha1_pack_index_name(const unsigned char *sha1);
Junio C Hamano013f2762005-10-11 22:22:48[diff] [blame]197extern const char *find_unique_abbrev(const unsigned char *sha1, int);
Junio C Hamano88cd6212005-09-30 21:02:47[diff] [blame]198extern const unsigned char null_sha1[20];
Linus Torvaldse83c5162005-04-07 22:13:13[diff] [blame]199
Holger Eitzenbergerf2db68e2005-08-04 20:43:03[diff] [blame]200int git_mkstemp(char *path, size_t n, const char *template);
201
Junio C Hamanob2cb9422005-07-06 08:11:52[diff] [blame]202int safe_create_leading_directories(char *path);
Holger Eitzenbergerf2db68e2005-08-04 20:43:03[diff] [blame]203char *safe_strncpy(char *, const char *, size_t);
Junio C Hamanob2cb9422005-07-06 08:11:52[diff] [blame]204
Linus Torvaldse83c5162005-04-07 22:13:13[diff] [blame]205/* Read and unpack a sha1 file into memory, write memory to a sha1 file */
Linus Torvaldsc4483572005-06-02 00:54:59[diff] [blame]206extern int unpack_sha1_header(z_stream *stream, void *map, unsigned long mapsize, void *buffer, unsigned long size);
Linus Torvalds5180cac2005-06-02 14:57:25[diff] [blame]207extern int parse_sha1_header(char *hdr, char *type, unsigned long *sizep);
Junio C Hamano36e4d742005-06-27 10:34:06[diff] [blame]208extern int sha1_object_info(const unsigned char *, char *, unsigned long *);
Linus Torvalds2ade9342005-04-08 22:01:15[diff] [blame]209extern void * unpack_sha1_file(void *map, unsigned long mapsize, char *type, unsigned long *size);
Linus Torvalds73134b62005-04-10 21:03:58[diff] [blame]210extern void * read_sha1_file(const unsigned char *sha1, char *type, unsigned long *size);
Brian Gerstbf0f9102005-05-18 12:14:09[diff] [blame]211extern int write_sha1_file(void *buf, unsigned long len, const char *type, unsigned char *return_sha1);
Bryan Larsen7672db22005-07-08 23:51:55[diff] [blame]212extern char *write_sha1_file_prepare(void *buf,
213 unsigned long len,
214 const char *type,
215 unsigned char *sha1,
216 unsigned char *hdr,
217 int *hdrlen);
Daniel Barkalow8237b182005-04-24 01:47:23[diff] [blame]218
Jason McMullan5d6ccf52005-06-03 15:05:39[diff] [blame]219extern int check_sha1_signature(const unsigned char *sha1, void *buf, unsigned long size, const char *type);
Linus Torvaldse83c5162005-04-07 22:13:13[diff] [blame]220
Linus Torvalds94537c72005-04-22 23:42:37[diff] [blame]221/* Read a tree into the cache */
Linus Torvalds3e587632005-07-14 18:39:27[diff] [blame]222extern int read_tree(void *buffer, unsigned long size, int stage, const char **paths);
Linus Torvalds94537c72005-04-22 23:42:37[diff] [blame]223
barkalow@iabervon.org70b98292005-08-02 23:46:29[diff] [blame]224extern int write_sha1_from_fd(const unsigned char *sha1, int fd, char *buffer,
225 size_t bufsize, size_t *bufposn);
Daniel Barkalowa5eda522005-07-10 22:25:38[diff] [blame]226extern int write_sha1_to_fd(int fd, const unsigned char *sha1);
Junio C Hamanob721e012005-10-11 06:22:01[diff] [blame]227extern int move_temp_to_file(const char *tmpfile, char *filename);
Daniel Barkalow8237b182005-04-24 01:47:23[diff] [blame]228
Linus Torvaldsdade09c2005-07-03 20:06:36[diff] [blame]229extern int has_sha1_pack(const unsigned char *sha1);
Daniel Barkalow8237b182005-04-24 01:47:23[diff] [blame]230extern int has_sha1_file(const unsigned char *sha1);
231
barkalow@iabervon.orgbf592c52005-08-01 00:53:44[diff] [blame]232extern int has_pack_file(const unsigned char *sha1);
233extern int has_pack_index(const unsigned char *sha1);
234
Linus Torvaldse83c5162005-04-07 22:13:13[diff] [blame]235/* Convert to/from hex/sha1 representation */
Linus Torvalds3c249c92005-05-01 23:36:56[diff] [blame]236extern int get_sha1(const char *str, unsigned char *sha1);
Linus Torvalds197ee8c2005-04-09 19:09:27[diff] [blame]237extern int get_sha1_hex(const char *hex, unsigned char *sha1);
238extern char *sha1_to_hex(const unsigned char *sha1); /* static buffer result! */
Linus Torvaldsca8db142005-09-25 16:59:37[diff] [blame]239extern int read_ref(const char *filename, unsigned char *sha1);
Junio C Hamanoa876ed82005-09-30 21:08:25[diff] [blame]240extern const char *resolve_ref(const char *path, unsigned char *sha1, int);
Junio C Hamano8098a172005-09-30 21:26:57[diff] [blame]241extern int create_symref(const char *git_HEAD, const char *refs_heads_master);
242extern int validate_symref(const char *git_HEAD);
Linus Torvaldse83c5162005-04-07 22:13:13[diff] [blame]243
244/* General helper functions */
Linus Torvalds90334cf2005-06-06 17:12:31[diff] [blame]245extern void usage(const char *err) NORETURN;
Timo Sirainen4ec99bf2005-08-09 15:30:22[diff] [blame]246extern void die(const char *err, ...) NORETURN __attribute__((format (printf, 1, 2)));
247extern int error(const char *err, ...) __attribute__((format (printf, 1, 2)));
Petr Baudis2de381f2005-04-13 09:28:48[diff] [blame]248
Linus Torvalds958ba6c2005-05-20 16:09:18[diff] [blame]249extern int base_name_compare(const char *name1, int len1, int mode1, const char *name2, int len2, int mode2);
Linus Torvalds79517a02005-04-09 19:59:11[diff] [blame]250extern int cache_name_compare(const char *name1, int len1, const char *name2, int len2);
Linus Torvaldse83c5162005-04-07 22:13:13[diff] [blame]251
Junio C Hamano40469ee2005-04-28 23:42:27[diff] [blame]252extern void *read_object_with_reference(const unsigned char *sha1,
Brian Gerstbf0f9102005-05-18 12:14:09[diff] [blame]253 const char *required_type,
Junio C Hamano40469ee2005-04-28 23:42:27[diff] [blame]254 unsigned long *size,
255 unsigned char *sha1_ret);
Junio C Hamanof4913f92005-04-21 01:06:49[diff] [blame]256
Linus Torvaldsf80cd782005-05-06 22:28:59[diff] [blame]257const char *show_date(unsigned long time, int timezone);
Linus Torvalds2a390642005-09-19 22:53:50[diff] [blame]258int parse_date(const char *date, char *buf, int bufsize);
Edgar Toernigecee9d92005-04-30 16:46:49[diff] [blame]259void datestamp(char *buf, int bufsize);
260
Linus Torvalds6aa33f42005-07-12 18:49:27[diff] [blame]261extern int setup_ident(void);
262extern char *get_ident(const char *name, const char *email, const char *date_str);
Eric W. Biedermand289d132005-07-15 00:50:33[diff] [blame]263extern char *git_author_info(void);
264extern char *git_committer_info(void);
Linus Torvalds6aa33f42005-07-12 18:49:27[diff] [blame]265
Brad Roberts127cfd02005-05-15 02:04:25[diff] [blame]266static inline void *xmalloc(size_t size)
Christopher Li812666c2005-04-26 19:00:58[diff] [blame]267{
268 void *ret = malloc(size);
269 if (!ret)
270 die("Out of memory, malloc failed");
271 return ret;
272}
273
Brad Roberts127cfd02005-05-15 02:04:25[diff] [blame]274static inline void *xrealloc(void *ptr, size_t size)
Christopher Li812666c2005-04-26 19:00:58[diff] [blame]275{
276 void *ret = realloc(ptr, size);
277 if (!ret)
278 die("Out of memory, realloc failed");
279 return ret;
280}
281
Brad Roberts127cfd02005-05-15 02:04:25[diff] [blame]282static inline void *xcalloc(size_t nmemb, size_t size)
283{
284 void *ret = calloc(nmemb, size);
285 if (!ret)
286 die("Out of memory, calloc failed");
287 return ret;
288}
289
Linus Torvalds12dccc12005-06-06 04:59:54[diff] [blame]290struct checkout {
291 const char *base_dir;
292 int base_dir_len;
293 unsigned force:1,
294 quiet:1,
295 not_new:1,
296 refresh_cache:1;
297};
298
299extern int checkout_entry(struct cache_entry *ce, struct checkout *state);
300
Junio C Hamano9a217f22005-06-28 21:56:57[diff] [blame]301extern struct alternate_object_database {
Junio C Hamanod5a63b92005-08-15 00:25:57[diff] [blame]302 struct alternate_object_database *next;
Junio C Hamano9a217f22005-06-28 21:56:57[diff] [blame]303 char *name;
Junio C Hamano2c046622005-08-29 19:41:03[diff] [blame]304 char base[0]; /* more */
Junio C Hamanod5a63b92005-08-15 00:25:57[diff] [blame]305} *alt_odb_list;
Junio C Hamano9a217f22005-06-28 21:56:57[diff] [blame]306extern void prepare_alt_odb(void);
307
308extern struct packed_git {
309 struct packed_git *next;
310 unsigned long index_size;
311 unsigned long pack_size;
312 unsigned int *index_base;
313 void *pack_base;
314 unsigned int pack_last_used;
Junio C Hamanof9253392005-06-29 09:51:27[diff] [blame]315 unsigned int pack_use_cnt;
Linus Torvalds9d835df2005-10-13 22:38:28[diff] [blame]316 int pack_local;
barkalow@iabervon.orgbf592c52005-08-01 00:53:44[diff] [blame]317 unsigned char sha1[20];
Junio C Hamano2c046622005-08-29 19:41:03[diff] [blame]318 char pack_name[0]; /* something like ".git/objects/pack/xxxxx.pack" */
Junio C Hamano9a217f22005-06-28 21:56:57[diff] [blame]319} *packed_git;
Junio C Hamanof3bf9222005-07-01 00:15:39[diff] [blame]320
321struct pack_entry {
322 unsigned int offset;
323 unsigned char sha1[20];
324 struct packed_git *p;
325};
326
Linus Torvaldsd1c133f2005-07-16 20:55:50[diff] [blame]327struct ref {
328 struct ref *next;
329 unsigned char old_sha1[20];
330 unsigned char new_sha1[20];
Junio C Hamanoff27adf2005-08-24 07:40:14[diff] [blame]331 unsigned char force;
Junio C Hamanof88395a2005-08-03 23:35:29[diff] [blame]332 struct ref *peer_ref; /* when renaming */
Junio C Hamano2c046622005-08-29 19:41:03[diff] [blame]333 char name[0];
Linus Torvaldsd1c133f2005-07-16 20:55:50[diff] [blame]334};
335
Linus Torvaldsf7192592005-07-04 18:57:58[diff] [blame]336extern int git_connect(int fd[2], char *url, const char *prog);
337extern int finish_connect(pid_t pid);
Linus Torvalds013e7c72005-07-04 20:24:30[diff] [blame]338extern int path_match(const char *path, int nr, char **match);
Junio C Hamanof88395a2005-08-03 23:35:29[diff] [blame]339extern int match_refs(struct ref *src, struct ref *dst, struct ref ***dst_tail,
340 int nr_refspec, char **refspec, int all);
Linus Torvalds41cb7482005-07-05 22:44:09[diff] [blame]341extern int get_ack(int fd, unsigned char *result_sha1);
Junio C Hamano1a7141f2005-10-14 01:57:40[diff] [blame]342extern struct ref **get_remote_heads(int in, struct ref **list, int nr_match, char **match, int ignore_funny);
Johannes Schindelin211b5f92005-10-28 02:48:54[diff] [blame]343extern int server_supports(const char *feature);
Linus Torvaldsf7192592005-07-04 18:57:58[diff] [blame]344
barkalow@iabervon.orgbf592c52005-08-01 00:53:44[diff] [blame]345extern struct packed_git *parse_pack_index(unsigned char *sha1);
Peter Hagervall2ab141a2005-09-02 12:17:10[diff] [blame]346extern struct packed_git *parse_pack_index_file(const unsigned char *sha1,
Daniel Barkalowc508df52005-08-16 04:10:03[diff] [blame]347 char *idx_path);
barkalow@iabervon.orgbf592c52005-08-01 00:53:44[diff] [blame]348
Junio C Hamano9a217f22005-06-28 21:56:57[diff] [blame]349extern void prepare_packed_git(void);
barkalow@iabervon.orgbf592c52005-08-01 00:53:44[diff] [blame]350extern void install_packed_git(struct packed_git *pack);
351
352extern struct packed_git *find_sha1_pack(const unsigned char *sha1,
353 struct packed_git *packs);
354
Junio C Hamanof9253392005-06-29 09:51:27[diff] [blame]355extern int use_packed_git(struct packed_git *);
356extern void unuse_packed_git(struct packed_git *);
Linus Torvalds9d835df2005-10-13 22:38:28[diff] [blame]357extern struct packed_git *add_packed_git(char *, int, int);
Junio C Hamano9a217f22005-06-28 21:56:57[diff] [blame]358extern int num_packed_objects(const struct packed_git *p);
359extern int nth_packed_object_sha1(const struct packed_git *, int, unsigned char*);
Junio C Hamanof3bf9222005-07-01 00:15:39[diff] [blame]360extern int find_pack_entry_one(const unsigned char *, struct pack_entry *, struct packed_git *);
361extern void *unpack_entry_gently(struct pack_entry *, char *, unsigned long *);
Junio C Hamanoad8c80a2005-07-01 00:17:20[diff] [blame]362extern void packed_object_info_detail(struct pack_entry *, char *, unsigned long *, unsigned long *, int *, unsigned char *);
Junio C Hamano9a217f22005-06-28 21:56:57[diff] [blame]363
Junio C Hamano8f3f9b02005-07-24 00:54:41[diff] [blame]364/* Dumb servers support */
365extern int update_server_info(int);
366
Johannes Schindelin730d48a2005-10-08 22:54:36[diff] [blame]367#ifdef NO_MMAP
368
369#ifndef PROT_READ
370#define PROT_READ 1
371#define PROT_WRITE 2
372#define MAP_PRIVATE 1
373#define MAP_FAILED ((void*)-1)
374#endif
375
376extern void *gitfakemmap(void *start, size_t length, int prot , int flags, int fd, off_t offset);
377extern int gitfakemunmap(void *start, size_t length);
378
379#endif
380
Linus Torvalds17712992005-10-10 23:31:08[diff] [blame]381typedef int (*config_fn_t)(const char *, const char *);
382extern int git_default_config(const char *, const char *);
383extern int git_config(config_fn_t fn);
384extern int git_config_int(const char *, const char *);
385extern int git_config_bool(const char *, const char *);
386
Linus Torvaldse1b10392005-10-12 01:47:34[diff] [blame]387#define MAX_GITNAME (1000)
388extern char git_default_email[MAX_GITNAME];
389extern char git_default_name[MAX_GITNAME];
390
Linus Torvalds45467382005-10-13 18:03:18[diff] [blame]391/* Sane ctype - no locale, and works with signed chars */
392#undef isspace
393#undef isdigit
394#undef isalpha
395#undef isalnum
396#undef tolower
397#undef toupper
398extern unsigned char sane_ctype[256];
399#define GIT_SPACE 0x01
400#define GIT_DIGIT 0x02
401#define GIT_ALPHA 0x04
402#define sane_istest(x,mask) ((sane_ctype[(unsigned char)(x)] & (mask)) != 0)
403#define isspace(x) sane_istest(x,GIT_SPACE)
404#define isdigit(x) sane_istest(x,GIT_DIGIT)
405#define isalpha(x) sane_istest(x,GIT_ALPHA)
406#define isalnum(x) sane_istest(x,GIT_ALPHA | GIT_DIGIT)
407#define tolower(x) sane_case((unsigned char)(x), 0x20)
408#define toupper(x) sane_case((unsigned char)(x), 0)
409
410static inline int sane_case(int x, int high)
411{
412 if (sane_istest(x, GIT_ALPHA))
413 x = (x & ~0x20) | high;
414 return x;
415}
416
Junio C Hamanof3123c42005-10-22 08:28:13[diff] [blame]417extern int copy_fd(int ifd, int ofd);
Linus Torvaldse83c5162005-04-07 22:13:13[diff] [blame]418#endif /* CACHE_H */