cache.hon commit enable "no-done" extension only when fetching over smart-http (8e9182e)
   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
   9#include SHA1_HEADER
  10#ifndef git_SHA_CTX
  11#define git_SHA_CTX     SHA_CTX
  12#define git_SHA1_Init   SHA1_Init
  13#define git_SHA1_Update SHA1_Update
  14#define git_SHA1_Final  SHA1_Final
  15#endif
  16
  17#include <zlib.h>
  18#if defined(NO_DEFLATE_BOUND) || ZLIB_VERNUM < 0x1200
  19#define deflateBound(c,s)  ((s) + (((s) + 7) >> 3) + (((s) + 63) >> 6) + 11)
  20#endif
  21
  22void git_inflate_init(z_streamp strm);
  23void git_inflate_end(z_streamp strm);
  24int git_inflate(z_streamp strm, int flush);
  25
  26#if defined(DT_UNKNOWN) && !defined(NO_D_TYPE_IN_DIRENT)
  27#define DTYPE(de)       ((de)->d_type)
  28#else
  29#undef DT_UNKNOWN
  30#undef DT_DIR
  31#undef DT_REG
  32#undef DT_LNK
  33#define DT_UNKNOWN      0
  34#define DT_DIR          1
  35#define DT_REG          2
  36#define DT_LNK          3
  37#define DTYPE(de)       DT_UNKNOWN
  38#endif
  39
  40/* unknown mode (impossible combination S_IFIFO|S_IFCHR) */
  41#define S_IFINVALID     0030000
  42
  43/*
  44 * A "directory link" is a link to another git directory.
  45 *
  46 * The value 0160000 is not normally a valid mode, and
  47 * also just happens to be S_IFDIR + S_IFLNK
  48 *
  49 * NOTE! We *really* shouldn't depend on the S_IFxxx macros
  50 * always having the same values everywhere. We should use
  51 * our internal git values for these things, and then we can
  52 * translate that to the OS-specific value. It just so
  53 * happens that everybody shares the same bit representation
  54 * in the UNIX world (and apparently wider too..)
  55 */
  56#define S_IFGITLINK     0160000
  57#define S_ISGITLINK(m)  (((m) & S_IFMT) == S_IFGITLINK)
  58
  59/*
  60 * Intensive research over the course of many years has shown that
  61 * port 9418 is totally unused by anything else. Or
  62 *
  63 *      Your search - "port 9418" - did not match any documents.
  64 *
  65 * as www.google.com puts it.
  66 *
  67 * This port has been properly assigned for git use by IANA:
  68 * git (Assigned-9418) [I06-050728-0001].
  69 *
  70 *      git  9418/tcp   git pack transfer service
  71 *      git  9418/udp   git pack transfer service
  72 *
  73 * with Linus Torvalds <torvalds@osdl.org> as the point of
  74 * contact. September 2005.
  75 *
  76 * See http://www.iana.org/assignments/port-numbers
  77 */
  78#define DEFAULT_GIT_PORT 9418
  79
  80/*
  81 * Basic data structures for the directory cache
  82 */
  83
  84#define CACHE_SIGNATURE 0x44495243      /* "DIRC" */
  85struct cache_header {
  86        unsigned int hdr_signature;
  87        unsigned int hdr_version;
  88        unsigned int hdr_entries;
  89};
  90
  91/*
  92 * The "cache_time" is just the low 32 bits of the
  93 * time. It doesn't matter if it overflows - we only
  94 * check it for equality in the 32 bits we save.
  95 */
  96struct cache_time {
  97        unsigned int sec;
  98        unsigned int nsec;
  99};
 100
 101/*
 102 * dev/ino/uid/gid/size are also just tracked to the low 32 bits
 103 * Again - this is just a (very strong in practice) heuristic that
 104 * the inode hasn't changed.
 105 *
 106 * We save the fields in big-endian order to allow using the
 107 * index file over NFS transparently.
 108 */
 109struct ondisk_cache_entry {
 110        struct cache_time ctime;
 111        struct cache_time mtime;
 112        unsigned int dev;
 113        unsigned int ino;
 114        unsigned int mode;
 115        unsigned int uid;
 116        unsigned int gid;
 117        unsigned int size;
 118        unsigned char sha1[20];
 119        unsigned short flags;
 120        char name[FLEX_ARRAY]; /* more */
 121};
 122
 123/*
 124 * This struct is used when CE_EXTENDED bit is 1
 125 * The struct must match ondisk_cache_entry exactly from
 126 * ctime till flags
 127 */
 128struct ondisk_cache_entry_extended {
 129        struct cache_time ctime;
 130        struct cache_time mtime;
 131        unsigned int dev;
 132        unsigned int ino;
 133        unsigned int mode;
 134        unsigned int uid;
 135        unsigned int gid;
 136        unsigned int size;
 137        unsigned char sha1[20];
 138        unsigned short flags;
 139        unsigned short flags2;
 140        char name[FLEX_ARRAY]; /* more */
 141};
 142
 143struct cache_entry {
 144        struct cache_time ce_ctime;
 145        struct cache_time ce_mtime;
 146        unsigned int ce_dev;
 147        unsigned int ce_ino;
 148        unsigned int ce_mode;
 149        unsigned int ce_uid;
 150        unsigned int ce_gid;
 151        unsigned int ce_size;
 152        unsigned int ce_flags;
 153        unsigned char sha1[20];
 154        struct cache_entry *next;
 155        char name[FLEX_ARRAY]; /* more */
 156};
 157
 158#define CE_NAMEMASK  (0x0fff)
 159#define CE_STAGEMASK (0x3000)
 160#define CE_EXTENDED  (0x4000)
 161#define CE_VALID     (0x8000)
 162#define CE_STAGESHIFT 12
 163
 164/*
 165 * Range 0xFFFF0000 in ce_flags is divided into
 166 * two parts: in-memory flags and on-disk ones.
 167 * Flags in CE_EXTENDED_FLAGS will get saved on-disk
 168 * if you want to save a new flag, add it in
 169 * CE_EXTENDED_FLAGS
 170 *
 171 * In-memory only flags
 172 */
 173#define CE_UPDATE            (1 << 16)
 174#define CE_REMOVE            (1 << 17)
 175#define CE_UPTODATE          (1 << 18)
 176#define CE_ADDED             (1 << 19)
 177
 178#define CE_HASHED            (1 << 20)
 179#define CE_UNHASHED          (1 << 21)
 180#define CE_WT_REMOVE         (1 << 22) /* remove in work directory */
 181#define CE_CONFLICTED        (1 << 23)
 182
 183#define CE_UNPACKED          (1 << 24)
 184#define CE_NEW_SKIP_WORKTREE (1 << 25)
 185
 186/*
 187 * Extended on-disk flags
 188 */
 189#define CE_INTENT_TO_ADD     (1 << 29)
 190#define CE_SKIP_WORKTREE     (1 << 30)
 191/* CE_EXTENDED2 is for future extension */
 192#define CE_EXTENDED2         (1 << 31)
 193
 194#define CE_EXTENDED_FLAGS (CE_INTENT_TO_ADD | CE_SKIP_WORKTREE)
 195
 196/*
 197 * Safeguard to avoid saving wrong flags:
 198 *  - CE_EXTENDED2 won't get saved until its semantic is known
 199 *  - Bits in 0x0000FFFF have been saved in ce_flags already
 200 *  - Bits in 0x003F0000 are currently in-memory flags
 201 */
 202#if CE_EXTENDED_FLAGS & 0x803FFFFF
 203#error "CE_EXTENDED_FLAGS out of range"
 204#endif
 205
 206/*
 207 * Copy the sha1 and stat state of a cache entry from one to
 208 * another. But we never change the name, or the hash state!
 209 */
 210#define CE_STATE_MASK (CE_HASHED | CE_UNHASHED)
 211static inline void copy_cache_entry(struct cache_entry *dst, struct cache_entry *src)
 212{
 213        unsigned int state = dst->ce_flags & CE_STATE_MASK;
 214
 215        /* Don't copy hash chain and name */
 216        memcpy(dst, src, offsetof(struct cache_entry, next));
 217
 218        /* Restore the hash state */
 219        dst->ce_flags = (dst->ce_flags & ~CE_STATE_MASK) | state;
 220}
 221
 222static inline unsigned create_ce_flags(size_t len, unsigned stage)
 223{
 224        if (len >= CE_NAMEMASK)
 225                len = CE_NAMEMASK;
 226        return (len | (stage << CE_STAGESHIFT));
 227}
 228
 229static inline size_t ce_namelen(const struct cache_entry *ce)
 230{
 231        size_t len = ce->ce_flags & CE_NAMEMASK;
 232        if (len < CE_NAMEMASK)
 233                return len;
 234        return strlen(ce->name + CE_NAMEMASK) + CE_NAMEMASK;
 235}
 236
 237#define ce_size(ce) cache_entry_size(ce_namelen(ce))
 238#define ondisk_ce_size(ce) (((ce)->ce_flags & CE_EXTENDED) ? \
 239                            ondisk_cache_entry_extended_size(ce_namelen(ce)) : \
 240                            ondisk_cache_entry_size(ce_namelen(ce)))
 241#define ce_stage(ce) ((CE_STAGEMASK & (ce)->ce_flags) >> CE_STAGESHIFT)
 242#define ce_uptodate(ce) ((ce)->ce_flags & CE_UPTODATE)
 243#define ce_skip_worktree(ce) ((ce)->ce_flags & CE_SKIP_WORKTREE)
 244#define ce_mark_uptodate(ce) ((ce)->ce_flags |= CE_UPTODATE)
 245
 246#define ce_permissions(mode) (((mode) & 0100) ? 0755 : 0644)
 247static inline unsigned int create_ce_mode(unsigned int mode)
 248{
 249        if (S_ISLNK(mode))
 250                return S_IFLNK;
 251        if (S_ISDIR(mode) || S_ISGITLINK(mode))
 252                return S_IFGITLINK;
 253        return S_IFREG | ce_permissions(mode);
 254}
 255static inline unsigned int ce_mode_from_stat(struct cache_entry *ce, unsigned int mode)
 256{
 257        extern int trust_executable_bit, has_symlinks;
 258        if (!has_symlinks && S_ISREG(mode) &&
 259            ce && S_ISLNK(ce->ce_mode))
 260                return ce->ce_mode;
 261        if (!trust_executable_bit && S_ISREG(mode)) {
 262                if (ce && S_ISREG(ce->ce_mode))
 263                        return ce->ce_mode;
 264                return create_ce_mode(0666);
 265        }
 266        return create_ce_mode(mode);
 267}
 268static inline int ce_to_dtype(const struct cache_entry *ce)
 269{
 270        unsigned ce_mode = ntohl(ce->ce_mode);
 271        if (S_ISREG(ce_mode))
 272                return DT_REG;
 273        else if (S_ISDIR(ce_mode) || S_ISGITLINK(ce_mode))
 274                return DT_DIR;
 275        else if (S_ISLNK(ce_mode))
 276                return DT_LNK;
 277        else
 278                return DT_UNKNOWN;
 279}
 280static inline unsigned int canon_mode(unsigned int mode)
 281{
 282        if (S_ISREG(mode))
 283                return S_IFREG | ce_permissions(mode);
 284        if (S_ISLNK(mode))
 285                return S_IFLNK;
 286        if (S_ISDIR(mode))
 287                return S_IFDIR;
 288        return S_IFGITLINK;
 289}
 290
 291#define flexible_size(STRUCT,len) ((offsetof(struct STRUCT,name) + (len) + 8) & ~7)
 292#define cache_entry_size(len) flexible_size(cache_entry,len)
 293#define ondisk_cache_entry_size(len) flexible_size(ondisk_cache_entry,len)
 294#define ondisk_cache_entry_extended_size(len) flexible_size(ondisk_cache_entry_extended,len)
 295
 296struct index_state {
 297        struct cache_entry **cache;
 298        unsigned int cache_nr, cache_alloc, cache_changed;
 299        struct string_list *resolve_undo;
 300        struct cache_tree *cache_tree;
 301        struct cache_time timestamp;
 302        void *alloc;
 303        unsigned name_hash_initialized : 1,
 304                 initialized : 1;
 305        struct hash_table name_hash;
 306};
 307
 308extern struct index_state the_index;
 309
 310/* Name hashing */
 311extern void add_name_hash(struct index_state *istate, struct cache_entry *ce);
 312/*
 313 * We don't actually *remove* it, we can just mark it invalid so that
 314 * we won't find it in lookups.
 315 *
 316 * Not only would we have to search the lists (simple enough), but
 317 * we'd also have to rehash other hash buckets in case this makes the
 318 * hash bucket empty (common). So it's much better to just mark
 319 * it.
 320 */
 321static inline void remove_name_hash(struct cache_entry *ce)
 322{
 323        ce->ce_flags |= CE_UNHASHED;
 324}
 325
 326
 327#ifndef NO_THE_INDEX_COMPATIBILITY_MACROS
 328#define active_cache (the_index.cache)
 329#define active_nr (the_index.cache_nr)
 330#define active_alloc (the_index.cache_alloc)
 331#define active_cache_changed (the_index.cache_changed)
 332#define active_cache_tree (the_index.cache_tree)
 333
 334#define read_cache() read_index(&the_index)
 335#define read_cache_from(path) read_index_from(&the_index, (path))
 336#define read_cache_preload(pathspec) read_index_preload(&the_index, (pathspec))
 337#define is_cache_unborn() is_index_unborn(&the_index)
 338#define read_cache_unmerged() read_index_unmerged(&the_index)
 339#define write_cache(newfd, cache, entries) write_index(&the_index, (newfd))
 340#define discard_cache() discard_index(&the_index)
 341#define unmerged_cache() unmerged_index(&the_index)
 342#define cache_name_pos(name, namelen) index_name_pos(&the_index,(name),(namelen))
 343#define add_cache_entry(ce, option) add_index_entry(&the_index, (ce), (option))
 344#define rename_cache_entry_at(pos, new_name) rename_index_entry_at(&the_index, (pos), (new_name))
 345#define remove_cache_entry_at(pos) remove_index_entry_at(&the_index, (pos))
 346#define remove_file_from_cache(path) remove_file_from_index(&the_index, (path))
 347#define add_to_cache(path, st, flags) add_to_index(&the_index, (path), (st), (flags))
 348#define add_file_to_cache(path, flags) add_file_to_index(&the_index, (path), (flags))
 349#define refresh_cache(flags) refresh_index(&the_index, (flags), NULL, NULL, NULL)
 350#define ce_match_stat(ce, st, options) ie_match_stat(&the_index, (ce), (st), (options))
 351#define ce_modified(ce, st, options) ie_modified(&the_index, (ce), (st), (options))
 352#define cache_name_exists(name, namelen, igncase) index_name_exists(&the_index, (name), (namelen), (igncase))
 353#define cache_name_is_other(name, namelen) index_name_is_other(&the_index, (name), (namelen))
 354#define resolve_undo_clear() resolve_undo_clear_index(&the_index)
 355#define unmerge_cache_entry_at(at) unmerge_index_entry_at(&the_index, at)
 356#define unmerge_cache(pathspec) unmerge_index(&the_index, pathspec)
 357#endif
 358
 359enum object_type {
 360        OBJ_BAD = -1,
 361        OBJ_NONE = 0,
 362        OBJ_COMMIT = 1,
 363        OBJ_TREE = 2,
 364        OBJ_BLOB = 3,
 365        OBJ_TAG = 4,
 366        /* 5 for future expansion */
 367        OBJ_OFS_DELTA = 6,
 368        OBJ_REF_DELTA = 7,
 369        OBJ_ANY,
 370        OBJ_MAX
 371};
 372
 373static inline enum object_type object_type(unsigned int mode)
 374{
 375        return S_ISDIR(mode) ? OBJ_TREE :
 376                S_ISGITLINK(mode) ? OBJ_COMMIT :
 377                OBJ_BLOB;
 378}
 379
 380#define GIT_DIR_ENVIRONMENT "GIT_DIR"
 381#define GIT_WORK_TREE_ENVIRONMENT "GIT_WORK_TREE"
 382#define DEFAULT_GIT_DIR_ENVIRONMENT ".git"
 383#define DB_ENVIRONMENT "GIT_OBJECT_DIRECTORY"
 384#define INDEX_ENVIRONMENT "GIT_INDEX_FILE"
 385#define GRAFT_ENVIRONMENT "GIT_GRAFT_FILE"
 386#define TEMPLATE_DIR_ENVIRONMENT "GIT_TEMPLATE_DIR"
 387#define CONFIG_ENVIRONMENT "GIT_CONFIG"
 388#define CONFIG_DATA_ENVIRONMENT "GIT_CONFIG_PARAMETERS"
 389#define EXEC_PATH_ENVIRONMENT "GIT_EXEC_PATH"
 390#define CEILING_DIRECTORIES_ENVIRONMENT "GIT_CEILING_DIRECTORIES"
 391#define NO_REPLACE_OBJECTS_ENVIRONMENT "GIT_NO_REPLACE_OBJECTS"
 392#define GITATTRIBUTES_FILE ".gitattributes"
 393#define INFOATTRIBUTES_FILE "info/attributes"
 394#define ATTRIBUTE_MACRO_PREFIX "[attr]"
 395#define GIT_NOTES_REF_ENVIRONMENT "GIT_NOTES_REF"
 396#define GIT_NOTES_DEFAULT_REF "refs/notes/commits"
 397#define GIT_NOTES_DISPLAY_REF_ENVIRONMENT "GIT_NOTES_DISPLAY_REF"
 398#define GIT_NOTES_REWRITE_REF_ENVIRONMENT "GIT_NOTES_REWRITE_REF"
 399#define GIT_NOTES_REWRITE_MODE_ENVIRONMENT "GIT_NOTES_REWRITE_MODE"
 400
 401/*
 402 * Repository-local GIT_* environment variables
 403 * The array is NULL-terminated to simplify its usage in contexts such
 404 * environment creation or simple walk of the list.
 405 * The number of non-NULL entries is available as a macro.
 406 */
 407#define LOCAL_REPO_ENV_SIZE 9
 408extern const char *const local_repo_env[LOCAL_REPO_ENV_SIZE + 1];
 409
 410extern int is_bare_repository_cfg;
 411extern int is_bare_repository(void);
 412extern int is_inside_git_dir(void);
 413extern char *git_work_tree_cfg;
 414extern int is_inside_work_tree(void);
 415extern int have_git_dir(void);
 416extern const char *get_git_dir(void);
 417extern char *get_object_directory(void);
 418extern char *get_index_file(void);
 419extern char *get_graft_file(void);
 420extern int set_git_dir(const char *path);
 421extern const char *get_git_work_tree(void);
 422extern const char *read_gitfile_gently(const char *path);
 423extern void set_git_work_tree(const char *tree);
 424
 425#define ALTERNATE_DB_ENVIRONMENT "GIT_ALTERNATE_OBJECT_DIRECTORIES"
 426
 427extern const char **get_pathspec(const char *prefix, const char **pathspec);
 428extern void setup_work_tree(void);
 429extern const char *setup_git_directory_gently(int *);
 430extern const char *setup_git_directory(void);
 431extern char *prefix_path(const char *prefix, int len, const char *path);
 432extern const char *prefix_filename(const char *prefix, int len, const char *path);
 433extern int check_filename(const char *prefix, const char *name);
 434extern void verify_filename(const char *prefix, const char *name);
 435extern void verify_non_filename(const char *prefix, const char *name);
 436
 437#define INIT_DB_QUIET 0x0001
 438
 439extern int init_db(const char *template_dir, unsigned int flags);
 440
 441#define alloc_nr(x) (((x)+16)*3/2)
 442
 443/*
 444 * Realloc the buffer pointed at by variable 'x' so that it can hold
 445 * at least 'nr' entries; the number of entries currently allocated
 446 * is 'alloc', using the standard growing factor alloc_nr() macro.
 447 *
 448 * DO NOT USE any expression with side-effect for 'x', 'nr', or 'alloc'.
 449 */
 450#define ALLOC_GROW(x, nr, alloc) \
 451        do { \
 452                if ((nr) > alloc) { \
 453                        if (alloc_nr(alloc) < (nr)) \
 454                                alloc = (nr); \
 455                        else \
 456                                alloc = alloc_nr(alloc); \
 457                        x = xrealloc((x), alloc * sizeof(*(x))); \
 458                } \
 459        } while (0)
 460
 461/* Initialize and use the cache information */
 462extern int read_index(struct index_state *);
 463extern int read_index_preload(struct index_state *, const char **pathspec);
 464extern int read_index_from(struct index_state *, const char *path);
 465extern int is_index_unborn(struct index_state *);
 466extern int read_index_unmerged(struct index_state *);
 467extern int write_index(struct index_state *, int newfd);
 468extern int discard_index(struct index_state *);
 469extern int unmerged_index(const struct index_state *);
 470extern int verify_path(const char *path);
 471extern struct cache_entry *index_name_exists(struct index_state *istate, const char *name, int namelen, int igncase);
 472extern int index_name_pos(const struct index_state *, const char *name, int namelen);
 473#define ADD_CACHE_OK_TO_ADD 1           /* Ok to add */
 474#define ADD_CACHE_OK_TO_REPLACE 2       /* Ok to replace file/directory */
 475#define ADD_CACHE_SKIP_DFCHECK 4        /* Ok to skip DF conflict checks */
 476#define ADD_CACHE_JUST_APPEND 8         /* Append only; tree.c::read_tree() */
 477#define ADD_CACHE_NEW_ONLY 16           /* Do not replace existing ones */
 478extern int add_index_entry(struct index_state *, struct cache_entry *ce, int option);
 479extern void rename_index_entry_at(struct index_state *, int pos, const char *new_name);
 480extern int remove_index_entry_at(struct index_state *, int pos);
 481extern void remove_marked_cache_entries(struct index_state *istate);
 482extern int remove_file_from_index(struct index_state *, const char *path);
 483#define ADD_CACHE_VERBOSE 1
 484#define ADD_CACHE_PRETEND 2
 485#define ADD_CACHE_IGNORE_ERRORS 4
 486#define ADD_CACHE_IGNORE_REMOVAL 8
 487#define ADD_CACHE_INTENT 16
 488extern int add_to_index(struct index_state *, const char *path, struct stat *, int flags);
 489extern int add_file_to_index(struct index_state *, const char *path, int flags);
 490extern struct cache_entry *make_cache_entry(unsigned int mode, const unsigned char *sha1, const char *path, int stage, int refresh);
 491extern int ce_same_name(struct cache_entry *a, struct cache_entry *b);
 492extern int index_name_is_other(const struct index_state *, const char *, int);
 493
 494/* do stat comparison even if CE_VALID is true */
 495#define CE_MATCH_IGNORE_VALID           01
 496/* do not check the contents but report dirty on racily-clean entries */
 497#define CE_MATCH_RACY_IS_DIRTY          02
 498/* do stat comparison even if CE_SKIP_WORKTREE is true */
 499#define CE_MATCH_IGNORE_SKIP_WORKTREE   04
 500extern int ie_match_stat(const struct index_state *, struct cache_entry *, struct stat *, unsigned int);
 501extern int ie_modified(const struct index_state *, struct cache_entry *, struct stat *, unsigned int);
 502
 503extern int ce_path_match(const struct cache_entry *ce, const char **pathspec);
 504extern int index_fd(unsigned char *sha1, int fd, struct stat *st, int write_object, enum object_type type, const char *path);
 505extern int index_path(unsigned char *sha1, const char *path, struct stat *st, int write_object);
 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, 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 *);
 530
 531extern int hold_locked_index(struct lock_file *, int);
 532extern int commit_locked_index(struct lock_file *);
 533extern void set_alternate_index_output(const char *);
 534extern int close_lock_file(struct lock_file *);
 535extern void rollback_lock_file(struct lock_file *);
 536extern int delete_ref(const char *, const unsigned char *sha1, int delopt);
 537
 538/* Environment bits from configuration mechanism */
 539extern int trust_executable_bit;
 540extern int trust_ctime;
 541extern int quote_path_fully;
 542extern int has_symlinks;
 543extern int ignore_case;
 544extern int assume_unchanged;
 545extern int prefer_symlink_refs;
 546extern int log_all_ref_updates;
 547extern int warn_ambiguous_refs;
 548extern int unique_abbrev_extra_length;
 549extern int shared_repository;
 550extern const char *apply_default_whitespace;
 551extern const char *apply_default_ignorewhitespace;
 552extern int zlib_compression_level;
 553extern int core_compression_level;
 554extern int core_compression_seen;
 555extern size_t packed_git_window_size;
 556extern size_t packed_git_limit;
 557extern size_t delta_base_cache_limit;
 558extern int read_replace_refs;
 559extern int fsync_object_files;
 560extern int core_preload_index;
 561extern int core_apply_sparse_checkout;
 562
 563enum safe_crlf {
 564        SAFE_CRLF_FALSE = 0,
 565        SAFE_CRLF_FAIL = 1,
 566        SAFE_CRLF_WARN = 2
 567};
 568
 569extern enum safe_crlf safe_crlf;
 570
 571enum auto_crlf {
 572        AUTO_CRLF_FALSE = 0,
 573        AUTO_CRLF_TRUE = 1,
 574        AUTO_CRLF_INPUT = -1,
 575};
 576
 577extern enum auto_crlf auto_crlf;
 578
 579enum eol {
 580        EOL_UNSET,
 581        EOL_CRLF,
 582        EOL_LF,
 583#ifdef NATIVE_CRLF
 584        EOL_NATIVE = EOL_CRLF
 585#else
 586        EOL_NATIVE = EOL_LF
 587#endif
 588};
 589
 590extern enum eol eol;
 591
 592enum branch_track {
 593        BRANCH_TRACK_UNSPECIFIED = -1,
 594        BRANCH_TRACK_NEVER = 0,
 595        BRANCH_TRACK_REMOTE,
 596        BRANCH_TRACK_ALWAYS,
 597        BRANCH_TRACK_EXPLICIT,
 598        BRANCH_TRACK_OVERRIDE
 599};
 600
 601enum rebase_setup_type {
 602        AUTOREBASE_NEVER = 0,
 603        AUTOREBASE_LOCAL,
 604        AUTOREBASE_REMOTE,
 605        AUTOREBASE_ALWAYS
 606};
 607
 608enum push_default_type {
 609        PUSH_DEFAULT_NOTHING = 0,
 610        PUSH_DEFAULT_MATCHING,
 611        PUSH_DEFAULT_TRACKING,
 612        PUSH_DEFAULT_CURRENT
 613};
 614
 615extern enum branch_track git_branch_track;
 616extern enum rebase_setup_type autorebase;
 617extern enum push_default_type push_default;
 618
 619enum object_creation_mode {
 620        OBJECT_CREATION_USES_HARDLINKS = 0,
 621        OBJECT_CREATION_USES_RENAMES = 1
 622};
 623
 624extern enum object_creation_mode object_creation_mode;
 625
 626extern char *notes_ref_name;
 627
 628extern int grafts_replace_parents;
 629
 630#define GIT_REPO_VERSION 0
 631extern int repository_format_version;
 632extern int check_repository_format(void);
 633
 634#define MTIME_CHANGED   0x0001
 635#define CTIME_CHANGED   0x0002
 636#define OWNER_CHANGED   0x0004
 637#define MODE_CHANGED    0x0008
 638#define INODE_CHANGED   0x0010
 639#define DATA_CHANGED    0x0020
 640#define TYPE_CHANGED    0x0040
 641
 642extern char *mksnpath(char *buf, size_t n, const char *fmt, ...)
 643        __attribute__((format (printf, 3, 4)));
 644extern char *git_snpath(char *buf, size_t n, const char *fmt, ...)
 645        __attribute__((format (printf, 3, 4)));
 646extern char *git_pathdup(const char *fmt, ...)
 647        __attribute__((format (printf, 1, 2)));
 648
 649/* Return a statically allocated filename matching the sha1 signature */
 650extern char *mkpath(const char *fmt, ...) __attribute__((format (printf, 1, 2)));
 651extern char *git_path(const char *fmt, ...) __attribute__((format (printf, 1, 2)));
 652extern char *git_path_submodule(const char *path, const char *fmt, ...)
 653        __attribute__((format (printf, 2, 3)));
 654
 655extern char *sha1_file_name(const unsigned char *sha1);
 656extern char *sha1_pack_name(const unsigned char *sha1);
 657extern char *sha1_pack_index_name(const unsigned char *sha1);
 658extern const char *find_unique_abbrev(const unsigned char *sha1, int);
 659extern const unsigned char null_sha1[20];
 660static inline int is_null_sha1(const unsigned char *sha1)
 661{
 662        return !memcmp(sha1, null_sha1, 20);
 663}
 664static inline int hashcmp(const unsigned char *sha1, const unsigned char *sha2)
 665{
 666        return memcmp(sha1, sha2, 20);
 667}
 668static inline void hashcpy(unsigned char *sha_dst, const unsigned char *sha_src)
 669{
 670        memcpy(sha_dst, sha_src, 20);
 671}
 672static inline void hashclr(unsigned char *hash)
 673{
 674        memset(hash, 0, 20);
 675}
 676
 677#define EMPTY_TREE_SHA1_HEX \
 678        "4b825dc642cb6eb9a060e54bf8d69288fbee4904"
 679#define EMPTY_TREE_SHA1_BIN \
 680         "\x4b\x82\x5d\xc6\x42\xcb\x6e\xb9\xa0\x60" \
 681         "\xe5\x4b\xf8\xd6\x92\x88\xfb\xee\x49\x04"
 682
 683int git_mkstemp(char *path, size_t n, const char *template);
 684
 685int git_mkstemps(char *path, size_t n, const char *template, int suffix_len);
 686
 687/* set default permissions by passing mode arguments to open(2) */
 688int git_mkstemps_mode(char *pattern, int suffix_len, int mode);
 689int git_mkstemp_mode(char *pattern, int mode);
 690
 691/*
 692 * NOTE NOTE NOTE!!
 693 *
 694 * PERM_UMASK, OLD_PERM_GROUP and OLD_PERM_EVERYBODY enumerations must
 695 * not be changed. Old repositories have core.sharedrepository written in
 696 * numeric format, and therefore these values are preserved for compatibility
 697 * reasons.
 698 */
 699enum sharedrepo {
 700        PERM_UMASK          = 0,
 701        OLD_PERM_GROUP      = 1,
 702        OLD_PERM_EVERYBODY  = 2,
 703        PERM_GROUP          = 0660,
 704        PERM_EVERYBODY      = 0664
 705};
 706int git_config_perm(const char *var, const char *value);
 707int set_shared_perm(const char *path, int mode);
 708#define adjust_shared_perm(path) set_shared_perm((path), 0)
 709int safe_create_leading_directories(char *path);
 710int safe_create_leading_directories_const(const char *path);
 711extern char *expand_user_path(const char *path);
 712char *enter_repo(char *path, int strict);
 713static inline int is_absolute_path(const char *path)
 714{
 715        return path[0] == '/' || has_dos_drive_prefix(path);
 716}
 717int is_directory(const char *);
 718const char *make_absolute_path(const char *path);
 719const char *make_nonrelative_path(const char *path);
 720const char *make_relative_path(const char *abs, const char *base);
 721int normalize_path_copy(char *dst, const char *src);
 722int longest_ancestor_length(const char *path, const char *prefix_list);
 723char *strip_path_suffix(const char *path, const char *suffix);
 724int daemon_avoid_alias(const char *path);
 725int offset_1st_component(const char *path);
 726
 727/* Read and unpack a sha1 file into memory, write memory to a sha1 file */
 728extern int sha1_object_info(const unsigned char *, unsigned long *);
 729extern void *read_sha1_file_repl(const unsigned char *sha1, enum object_type *type, unsigned long *size, const unsigned char **replacement);
 730static inline void *read_sha1_file(const unsigned char *sha1, enum object_type *type, unsigned long *size)
 731{
 732        return read_sha1_file_repl(sha1, type, size, NULL);
 733}
 734extern int hash_sha1_file(const void *buf, unsigned long len, const char *type, unsigned char *sha1);
 735extern int write_sha1_file(const void *buf, unsigned long len, const char *type, unsigned char *return_sha1);
 736extern int pretend_sha1_file(void *, unsigned long, enum object_type, unsigned char *);
 737extern int force_object_loose(const unsigned char *sha1, time_t mtime);
 738
 739/* global flag to enable extra checks when accessing packed objects */
 740extern int do_check_packed_object_crc;
 741
 742extern int check_sha1_signature(const unsigned char *sha1, void *buf, unsigned long size, const char *type);
 743
 744extern int move_temp_to_file(const char *tmpfile, const char *filename);
 745
 746extern int has_sha1_pack(const unsigned char *sha1);
 747extern int has_sha1_file(const unsigned char *sha1);
 748extern int has_loose_object_nonlocal(const unsigned char *sha1);
 749
 750extern int has_pack_index(const unsigned char *sha1);
 751
 752extern void assert_sha1_type(const unsigned char *sha1, enum object_type expect);
 753
 754extern const signed char hexval_table[256];
 755static inline unsigned int hexval(unsigned char c)
 756{
 757        return hexval_table[c];
 758}
 759
 760/* Convert to/from hex/sha1 representation */
 761#define MINIMUM_ABBREV 4
 762#define DEFAULT_ABBREV 7
 763
 764struct object_context {
 765        unsigned char tree[20];
 766        char path[PATH_MAX];
 767        unsigned mode;
 768};
 769
 770extern int get_sha1(const char *str, unsigned char *sha1);
 771extern int get_sha1_with_mode_1(const char *str, unsigned char *sha1, unsigned *mode, int gently, const char *prefix);
 772static inline int get_sha1_with_mode(const char *str, unsigned char *sha1, unsigned *mode)
 773{
 774        return get_sha1_with_mode_1(str, sha1, mode, 1, NULL);
 775}
 776extern int get_sha1_with_context_1(const char *name, unsigned char *sha1, struct object_context *orc, int gently, const char *prefix);
 777static inline int get_sha1_with_context(const char *str, unsigned char *sha1, struct object_context *orc)
 778{
 779        return get_sha1_with_context_1(str, sha1, orc, 1, NULL);
 780}
 781extern int get_sha1_hex(const char *hex, unsigned char *sha1);
 782extern char *sha1_to_hex(const unsigned char *sha1);    /* static buffer result! */
 783extern int read_ref(const char *filename, unsigned char *sha1);
 784extern const char *resolve_ref(const char *path, unsigned char *sha1, int, int *);
 785extern int dwim_ref(const char *str, int len, unsigned char *sha1, char **ref);
 786extern int dwim_log(const char *str, int len, unsigned char *sha1, char **ref);
 787extern int interpret_branch_name(const char *str, struct strbuf *);
 788extern int get_sha1_mb(const char *str, unsigned char *sha1);
 789
 790extern int refname_match(const char *abbrev_name, const char *full_name, const char **rules);
 791extern const char *ref_rev_parse_rules[];
 792extern const char *ref_fetch_rules[];
 793
 794extern int create_symref(const char *ref, const char *refs_heads_master, const char *logmsg);
 795extern int validate_headref(const char *ref);
 796
 797extern int base_name_compare(const char *name1, int len1, int mode1, const char *name2, int len2, int mode2);
 798extern int df_name_compare(const char *name1, int len1, int mode1, const char *name2, int len2, int mode2);
 799extern int cache_name_compare(const char *name1, int len1, const char *name2, int len2);
 800
 801extern void *read_object_with_reference(const unsigned char *sha1,
 802                                        const char *required_type,
 803                                        unsigned long *size,
 804                                        unsigned char *sha1_ret);
 805
 806extern struct object *peel_to_type(const char *name, int namelen,
 807                                   struct object *o, enum object_type);
 808
 809enum date_mode {
 810        DATE_NORMAL = 0,
 811        DATE_RELATIVE,
 812        DATE_SHORT,
 813        DATE_LOCAL,
 814        DATE_ISO8601,
 815        DATE_RFC2822,
 816        DATE_RAW
 817};
 818
 819const char *show_date(unsigned long time, int timezone, enum date_mode mode);
 820const char *show_date_relative(unsigned long time, int tz,
 821                               const struct timeval *now,
 822                               char *timebuf,
 823                               size_t timebuf_size);
 824int parse_date(const char *date, char *buf, int bufsize);
 825int parse_date_basic(const char *date, unsigned long *timestamp, int *offset);
 826void datestamp(char *buf, int bufsize);
 827#define approxidate(s) approxidate_careful((s), NULL)
 828unsigned long approxidate_careful(const char *, int *);
 829unsigned long approxidate_relative(const char *date, const struct timeval *now);
 830enum date_mode parse_date_format(const char *format);
 831
 832#define IDENT_WARN_ON_NO_NAME  1
 833#define IDENT_ERROR_ON_NO_NAME 2
 834#define IDENT_NO_DATE          4
 835extern const char *git_author_info(int);
 836extern const char *git_committer_info(int);
 837extern const char *fmt_ident(const char *name, const char *email, const char *date_str, int);
 838extern const char *fmt_name(const char *name, const char *email);
 839extern const char *git_editor(void);
 840extern const char *git_pager(int stdout_is_tty);
 841
 842struct checkout {
 843        const char *base_dir;
 844        int base_dir_len;
 845        unsigned force:1,
 846                 quiet:1,
 847                 not_new:1,
 848                 refresh_cache:1;
 849};
 850
 851extern int checkout_entry(struct cache_entry *ce, const struct checkout *state, char *topath);
 852
 853struct cache_def {
 854        char path[PATH_MAX + 1];
 855        int len;
 856        int flags;
 857        int track_flags;
 858        int prefix_len_stat_func;
 859};
 860
 861extern int has_symlink_leading_path(const char *name, int len);
 862extern int threaded_has_symlink_leading_path(struct cache_def *, const char *, int);
 863extern int check_leading_path(const char *name, int len);
 864extern int has_dirs_only_path(const char *name, int len, int prefix_len);
 865extern void schedule_dir_for_removal(const char *name, int len);
 866extern void remove_scheduled_dirs(void);
 867
 868extern struct alternate_object_database {
 869        struct alternate_object_database *next;
 870        char *name;
 871        char base[FLEX_ARRAY]; /* more */
 872} *alt_odb_list;
 873extern void prepare_alt_odb(void);
 874extern void add_to_alternates_file(const char *reference);
 875typedef int alt_odb_fn(struct alternate_object_database *, void *);
 876extern void foreach_alt_odb(alt_odb_fn, void*);
 877
 878struct pack_window {
 879        struct pack_window *next;
 880        unsigned char *base;
 881        off_t offset;
 882        size_t len;
 883        unsigned int last_used;
 884        unsigned int inuse_cnt;
 885};
 886
 887extern struct packed_git {
 888        struct packed_git *next;
 889        struct pack_window *windows;
 890        off_t pack_size;
 891        const void *index_data;
 892        size_t index_size;
 893        uint32_t num_objects;
 894        uint32_t num_bad_objects;
 895        unsigned char *bad_object_sha1;
 896        int index_version;
 897        time_t mtime;
 898        int pack_fd;
 899        unsigned pack_local:1,
 900                 pack_keep:1;
 901        unsigned char sha1[20];
 902        /* something like ".git/objects/pack/xxxxx.pack" */
 903        char pack_name[FLEX_ARRAY]; /* more */
 904} *packed_git;
 905
 906struct pack_entry {
 907        off_t offset;
 908        unsigned char sha1[20];
 909        struct packed_git *p;
 910};
 911
 912struct ref {
 913        struct ref *next;
 914        unsigned char old_sha1[20];
 915        unsigned char new_sha1[20];
 916        char *symref;
 917        unsigned int force:1,
 918                merge:1,
 919                nonfastforward:1,
 920                deletion:1;
 921        enum {
 922                REF_STATUS_NONE = 0,
 923                REF_STATUS_OK,
 924                REF_STATUS_REJECT_NONFASTFORWARD,
 925                REF_STATUS_REJECT_NODELETE,
 926                REF_STATUS_UPTODATE,
 927                REF_STATUS_REMOTE_REJECT,
 928                REF_STATUS_EXPECTING_REPORT
 929        } status;
 930        char *remote_status;
 931        struct ref *peer_ref; /* when renaming */
 932        char name[FLEX_ARRAY]; /* more */
 933};
 934
 935#define REF_NORMAL      (1u << 0)
 936#define REF_HEADS       (1u << 1)
 937#define REF_TAGS        (1u << 2)
 938
 939extern struct ref *find_ref_by_name(const struct ref *list, const char *name);
 940
 941#define CONNECT_VERBOSE       (1u << 0)
 942extern char *git_getpass(const char *prompt);
 943extern struct child_process *git_connect(int fd[2], const char *url, const char *prog, int flags);
 944extern int finish_connect(struct child_process *conn);
 945extern int path_match(const char *path, int nr, char **match);
 946struct extra_have_objects {
 947        int nr, alloc;
 948        unsigned char (*array)[20];
 949};
 950extern struct ref **get_remote_heads(int in, struct ref **list, int nr_match, char **match, unsigned int flags, struct extra_have_objects *);
 951extern int server_supports(const char *feature);
 952
 953extern struct packed_git *parse_pack_index(unsigned char *sha1, const char *idx_path);
 954
 955extern void prepare_packed_git(void);
 956extern void reprepare_packed_git(void);
 957extern void install_packed_git(struct packed_git *pack);
 958
 959extern struct packed_git *find_sha1_pack(const unsigned char *sha1,
 960                                         struct packed_git *packs);
 961
 962extern void pack_report(void);
 963extern int open_pack_index(struct packed_git *);
 964extern void close_pack_index(struct packed_git *);
 965extern unsigned char *use_pack(struct packed_git *, struct pack_window **, off_t, unsigned int *);
 966extern void close_pack_windows(struct packed_git *);
 967extern void unuse_pack(struct pack_window **);
 968extern void free_pack_by_name(const char *);
 969extern void clear_delta_base_cache(void);
 970extern struct packed_git *add_packed_git(const char *, int, int);
 971extern const unsigned char *nth_packed_object_sha1(struct packed_git *, uint32_t);
 972extern off_t nth_packed_object_offset(const struct packed_git *, uint32_t);
 973extern off_t find_pack_entry_one(const unsigned char *, struct packed_git *);
 974extern void *unpack_entry(struct packed_git *, off_t, enum object_type *, unsigned long *);
 975extern unsigned long unpack_object_header_buffer(const unsigned char *buf, unsigned long len, enum object_type *type, unsigned long *sizep);
 976extern unsigned long get_size_from_delta(struct packed_git *, struct pack_window **, off_t);
 977extern const char *packed_object_info_detail(struct packed_git *, off_t, unsigned long *, unsigned long *, unsigned int *, unsigned char *);
 978
 979/* Dumb servers support */
 980extern int update_server_info(int);
 981
 982typedef int (*config_fn_t)(const char *, const char *, void *);
 983extern int git_default_config(const char *, const char *, void *);
 984extern int git_config_from_file(config_fn_t fn, const char *, void *);
 985extern void git_config_push_parameter(const char *text);
 986extern int git_config_parse_parameter(const char *text);
 987extern int git_config_parse_environment(void);
 988extern int git_config_from_parameters(config_fn_t fn, void *data);
 989extern int git_config(config_fn_t fn, void *);
 990extern int git_config_early(config_fn_t fn, void *, const char *repo_config);
 991extern int git_parse_ulong(const char *, unsigned long *);
 992extern int git_config_int(const char *, const char *);
 993extern unsigned long git_config_ulong(const char *, const char *);
 994extern int git_config_bool_or_int(const char *, const char *, int *);
 995extern int git_config_bool(const char *, const char *);
 996extern int git_config_maybe_bool(const char *, const char *);
 997extern int git_config_string(const char **, const char *, const char *);
 998extern int git_config_pathname(const char **, const char *, const char *);
 999extern int git_config_set(const char *, const char *);
1000extern int git_config_set_multivar(const char *, const char *, const char *, int);
1001extern int git_config_rename_section(const char *, const char *);
1002extern const char *git_etc_gitconfig(void);
1003extern int check_repository_format_version(const char *var, const char *value, void *cb);
1004extern int git_env_bool(const char *, int);
1005extern int git_config_system(void);
1006extern int git_config_global(void);
1007extern int config_error_nonbool(const char *);
1008extern const char *get_log_output_encoding(void);
1009extern const char *get_commit_output_encoding(void);
1010
1011extern const char *config_exclusive_filename;
1012
1013#define MAX_GITNAME (1000)
1014extern char git_default_email[MAX_GITNAME];
1015extern char git_default_name[MAX_GITNAME];
1016#define IDENT_NAME_GIVEN 01
1017#define IDENT_MAIL_GIVEN 02
1018#define IDENT_ALL_GIVEN (IDENT_NAME_GIVEN|IDENT_MAIL_GIVEN)
1019extern int user_ident_explicitly_given;
1020extern int user_ident_sufficiently_given(void);
1021
1022extern const char *git_commit_encoding;
1023extern const char *git_log_output_encoding;
1024extern const char *git_mailmap_file;
1025
1026/* IO helper functions */
1027extern void maybe_flush_or_die(FILE *, const char *);
1028extern int copy_fd(int ifd, int ofd);
1029extern int copy_file(const char *dst, const char *src, int mode);
1030extern int copy_file_with_time(const char *dst, const char *src, int mode);
1031extern void write_or_die(int fd, const void *buf, size_t count);
1032extern int write_or_whine(int fd, const void *buf, size_t count, const char *msg);
1033extern int write_or_whine_pipe(int fd, const void *buf, size_t count, const char *msg);
1034extern void fsync_or_die(int fd, const char *);
1035
1036extern ssize_t read_in_full(int fd, void *buf, size_t count);
1037extern ssize_t write_in_full(int fd, const void *buf, size_t count);
1038static inline ssize_t write_str_in_full(int fd, const char *str)
1039{
1040        return write_in_full(fd, str, strlen(str));
1041}
1042
1043/* pager.c */
1044extern void setup_pager(void);
1045extern const char *pager_program;
1046extern int pager_in_use(void);
1047extern int pager_use_color;
1048
1049extern const char *editor_program;
1050extern const char *askpass_program;
1051extern const char *excludes_file;
1052
1053/* base85 */
1054int decode_85(char *dst, const char *line, int linelen);
1055void encode_85(char *buf, const unsigned char *data, int bytes);
1056
1057/* alloc.c */
1058extern void *alloc_blob_node(void);
1059extern void *alloc_tree_node(void);
1060extern void *alloc_commit_node(void);
1061extern void *alloc_tag_node(void);
1062extern void *alloc_object_node(void);
1063extern void alloc_report(void);
1064
1065/* trace.c */
1066__attribute__((format (printf, 1, 2)))
1067extern void trace_printf(const char *format, ...);
1068__attribute__((format (printf, 2, 3)))
1069extern void trace_argv_printf(const char **argv, const char *format, ...);
1070extern void trace_repo_setup(const char *prefix);
1071
1072/* convert.c */
1073/* returns 1 if *dst was used */
1074extern int convert_to_git(const char *path, const char *src, size_t len,
1075                          struct strbuf *dst, enum safe_crlf checksafe);
1076extern int convert_to_working_tree(const char *path, const char *src, size_t len, struct strbuf *dst);
1077extern int renormalize_buffer(const char *path, const char *src, size_t len, struct strbuf *dst);
1078
1079/* add */
1080/*
1081 * return 0 if success, 1 - if addition of a file failed and
1082 * ADD_FILES_IGNORE_ERRORS was specified in flags
1083 */
1084int add_files_to_cache(const char *prefix, const char **pathspec, int flags);
1085
1086/* diff.c */
1087extern int diff_auto_refresh_index;
1088
1089/* match-trees.c */
1090void shift_tree(const unsigned char *, const unsigned char *, unsigned char *, int);
1091void shift_tree_by(const unsigned char *, const unsigned char *, unsigned char *, const char *);
1092
1093/*
1094 * whitespace rules.
1095 * used by both diff and apply
1096 * last two digits are tab width
1097 */
1098#define WS_BLANK_AT_EOL         0100
1099#define WS_SPACE_BEFORE_TAB     0200
1100#define WS_INDENT_WITH_NON_TAB  0400
1101#define WS_CR_AT_EOL           01000
1102#define WS_BLANK_AT_EOF        02000
1103#define WS_TAB_IN_INDENT       04000
1104#define WS_TRAILING_SPACE      (WS_BLANK_AT_EOL|WS_BLANK_AT_EOF)
1105#define WS_DEFAULT_RULE (WS_TRAILING_SPACE|WS_SPACE_BEFORE_TAB|8)
1106#define WS_TAB_WIDTH_MASK        077
1107extern unsigned whitespace_rule_cfg;
1108extern unsigned whitespace_rule(const char *);
1109extern unsigned parse_whitespace_rule(const char *);
1110extern unsigned ws_check(const char *line, int len, unsigned ws_rule);
1111extern void ws_check_emit(const char *line, int len, unsigned ws_rule, FILE *stream, const char *set, const char *reset, const char *ws);
1112extern char *whitespace_error_string(unsigned ws);
1113extern void ws_fix_copy(struct strbuf *, const char *, int, unsigned, int *);
1114extern int ws_blank_line(const char *line, int len, unsigned ws_rule);
1115#define ws_tab_width(rule)     ((rule) & WS_TAB_WIDTH_MASK)
1116
1117/* ls-files */
1118int report_path_error(const char *ps_matched, const char **pathspec, int prefix_offset);
1119void overlay_tree_on_cache(const char *tree_name, const char *prefix);
1120
1121char *alias_lookup(const char *alias);
1122int split_cmdline(char *cmdline, const char ***argv);
1123/* Takes a negative value returned by split_cmdline */
1124const char *split_cmdline_strerror(int cmdline_errno);
1125
1126/* git.c */
1127struct startup_info {
1128        int have_repository;
1129        const char *prefix;
1130};
1131extern struct startup_info *startup_info;
1132
1133/* builtin/merge.c */
1134int checkout_fast_forward(const unsigned char *from, const unsigned char *to);
1135
1136#endif /* CACHE_H */