diff options
Diffstat (limited to 'cache.h')
| -rw-r--r-- | cache.h | 1059 |
1 files changed, 958 insertions, 101 deletions
@@ -2,13 +2,42 @@ #define CACHE_H #include "git-compat-util.h" +#include "strbuf.h" +#include "hash.h" +#include "advice.h" +#include "gettext.h" +#include "convert.h" #include SHA1_HEADER +#ifndef git_SHA_CTX +#define git_SHA_CTX SHA_CTX +#define git_SHA1_Init SHA1_Init +#define git_SHA1_Update SHA1_Update +#define git_SHA1_Final SHA1_Final +#endif + #include <zlib.h> +typedef struct git_zstream { + z_stream z; + unsigned long avail_in; + unsigned long avail_out; + unsigned long total_in; + unsigned long total_out; + unsigned char *next_in; + unsigned char *next_out; +} git_zstream; -#if ZLIB_VERNUM < 0x1200 -#define deflateBound(c,s) ((s) + (((s) + 7) >> 3) + (((s) + 63) >> 6) + 11) -#endif +void git_inflate_init(git_zstream *); +void git_inflate_init_gzip_only(git_zstream *); +void git_inflate_end(git_zstream *); +int git_inflate(git_zstream *, int flush); + +void git_deflate_init(git_zstream *, int level); +void git_deflate_init_gzip(git_zstream *, int level); +void git_deflate_end(git_zstream *); +int git_deflate_end_gently(git_zstream *); +int git_deflate(git_zstream *, int flush); +unsigned long git_deflate_bound(git_zstream *, unsigned long); #if defined(DT_UNKNOWN) && !defined(NO_D_TYPE_IN_DIRENT) #define DTYPE(de) ((de)->d_type) @@ -24,6 +53,25 @@ #define DTYPE(de) DT_UNKNOWN #endif +/* unknown mode (impossible combination S_IFIFO|S_IFCHR) */ +#define S_IFINVALID 0030000 + +/* + * A "directory link" is a link to another git directory. + * + * The value 0160000 is not normally a valid mode, and + * also just happens to be S_IFDIR + S_IFLNK + * + * NOTE! We *really* shouldn't depend on the S_IFxxx macros + * always having the same values everywhere. We should use + * our internal git values for these things, and then we can + * translate that to the OS-specific value. It just so + * happens that everybody shares the same bit representation + * in the UNIX world (and apparently wider too..) + */ +#define S_IFGITLINK 0160000 +#define S_ISGITLINK(m) (((m) & S_IFMT) == S_IFGITLINK) + /* * Intensive research over the course of many years has shown that * port 9418 is totally unused by anything else. Or @@ -74,6 +122,40 @@ struct cache_time { * We save the fields in big-endian order to allow using the * index file over NFS transparently. */ +struct ondisk_cache_entry { + struct cache_time ctime; + struct cache_time mtime; + unsigned int dev; + unsigned int ino; + unsigned int mode; + unsigned int uid; + unsigned int gid; + unsigned int size; + unsigned char sha1[20]; + unsigned short flags; + char name[FLEX_ARRAY]; /* more */ +}; + +/* + * This struct is used when CE_EXTENDED bit is 1 + * The struct must match ondisk_cache_entry exactly from + * ctime till flags + */ +struct ondisk_cache_entry_extended { + struct cache_time ctime; + struct cache_time mtime; + unsigned int dev; + unsigned int ino; + unsigned int mode; + unsigned int uid; + unsigned int gid; + unsigned int size; + unsigned char sha1[20]; + unsigned short flags; + unsigned short flags2; + char name[FLEX_ARRAY]; /* more */ +}; + struct cache_entry { struct cache_time ce_ctime; struct cache_time ce_mtime; @@ -83,91 +165,480 @@ struct cache_entry { unsigned int ce_uid; unsigned int ce_gid; unsigned int ce_size; + unsigned int ce_flags; unsigned char sha1[20]; - unsigned short ce_flags; + struct cache_entry *next; char name[FLEX_ARRAY]; /* more */ }; #define CE_NAMEMASK (0x0fff) #define CE_STAGEMASK (0x3000) -#define CE_UPDATE (0x4000) +#define CE_EXTENDED (0x4000) #define CE_VALID (0x8000) #define CE_STAGESHIFT 12 -#define create_ce_flags(len, stage) htons((len) | ((stage) << CE_STAGESHIFT)) -#define ce_namelen(ce) (CE_NAMEMASK & ntohs((ce)->ce_flags)) +/* + * Range 0xFFFF0000 in ce_flags is divided into + * two parts: in-memory flags and on-disk ones. + * Flags in CE_EXTENDED_FLAGS will get saved on-disk + * if you want to save a new flag, add it in + * CE_EXTENDED_FLAGS + * + * In-memory only flags + */ +#define CE_UPDATE (1 << 16) +#define CE_REMOVE (1 << 17) +#define CE_UPTODATE (1 << 18) +#define CE_ADDED (1 << 19) + +#define CE_HASHED (1 << 20) +#define CE_UNHASHED (1 << 21) +#define CE_WT_REMOVE (1 << 22) /* remove in work directory */ +#define CE_CONFLICTED (1 << 23) + +#define CE_UNPACKED (1 << 24) +#define CE_NEW_SKIP_WORKTREE (1 << 25) + +/* + * Extended on-disk flags + */ +#define CE_INTENT_TO_ADD (1 << 29) +#define CE_SKIP_WORKTREE (1 << 30) +/* CE_EXTENDED2 is for future extension */ +#define CE_EXTENDED2 (1 << 31) + +#define CE_EXTENDED_FLAGS (CE_INTENT_TO_ADD | CE_SKIP_WORKTREE) + +/* + * Safeguard to avoid saving wrong flags: + * - CE_EXTENDED2 won't get saved until its semantic is known + * - Bits in 0x0000FFFF have been saved in ce_flags already + * - Bits in 0x003F0000 are currently in-memory flags + */ +#if CE_EXTENDED_FLAGS & 0x803FFFFF +#error "CE_EXTENDED_FLAGS out of range" +#endif + +/* + * Copy the sha1 and stat state of a cache entry from one to + * another. But we never change the name, or the hash state! + */ +#define CE_STATE_MASK (CE_HASHED | CE_UNHASHED) +static inline void copy_cache_entry(struct cache_entry *dst, struct cache_entry *src) +{ + unsigned int state = dst->ce_flags & CE_STATE_MASK; + + /* Don't copy hash chain and name */ + memcpy(dst, src, offsetof(struct cache_entry, next)); + + /* Restore the hash state */ + dst->ce_flags = (dst->ce_flags & ~CE_STATE_MASK) | state; +} + +static inline unsigned create_ce_flags(size_t len, unsigned stage) +{ + if (len >= CE_NAMEMASK) + len = CE_NAMEMASK; + return (len | (stage << CE_STAGESHIFT)); +} + +static inline size_t ce_namelen(const struct cache_entry *ce) +{ + size_t len = ce->ce_flags & CE_NAMEMASK; + if (len < CE_NAMEMASK) + return len; + return strlen(ce->name + CE_NAMEMASK) + CE_NAMEMASK; +} + #define ce_size(ce) cache_entry_size(ce_namelen(ce)) -#define ce_stage(ce) ((CE_STAGEMASK & ntohs((ce)->ce_flags)) >> CE_STAGESHIFT) +#define ondisk_ce_size(ce) (((ce)->ce_flags & CE_EXTENDED) ? \ + ondisk_cache_entry_extended_size(ce_namelen(ce)) : \ + ondisk_cache_entry_size(ce_namelen(ce))) +#define ce_stage(ce) ((CE_STAGEMASK & (ce)->ce_flags) >> CE_STAGESHIFT) +#define ce_uptodate(ce) ((ce)->ce_flags & CE_UPTODATE) +#define ce_skip_worktree(ce) ((ce)->ce_flags & CE_SKIP_WORKTREE) +#define ce_mark_uptodate(ce) ((ce)->ce_flags |= CE_UPTODATE) #define ce_permissions(mode) (((mode) & 0100) ? 0755 : 0644) static inline unsigned int create_ce_mode(unsigned int mode) { if (S_ISLNK(mode)) - return htonl(S_IFLNK); - return htonl(S_IFREG | ce_permissions(mode)); + return S_IFLNK; + if (S_ISDIR(mode) || S_ISGITLINK(mode)) + return S_IFGITLINK; + return S_IFREG | ce_permissions(mode); +} +static inline unsigned int ce_mode_from_stat(struct cache_entry *ce, unsigned int mode) +{ + extern int trust_executable_bit, has_symlinks; + if (!has_symlinks && S_ISREG(mode) && + ce && S_ISLNK(ce->ce_mode)) + return ce->ce_mode; + if (!trust_executable_bit && S_ISREG(mode)) { + if (ce && S_ISREG(ce->ce_mode)) + return ce->ce_mode; + return create_ce_mode(0666); + } + return create_ce_mode(mode); +} +static inline int ce_to_dtype(const struct cache_entry *ce) +{ + unsigned ce_mode = ntohl(ce->ce_mode); + if (S_ISREG(ce_mode)) + return DT_REG; + else if (S_ISDIR(ce_mode) || S_ISGITLINK(ce_mode)) + return DT_DIR; + else if (S_ISLNK(ce_mode)) + return DT_LNK; + else + return DT_UNKNOWN; +} +static inline unsigned int canon_mode(unsigned int mode) +{ + if (S_ISREG(mode)) + return S_IFREG | ce_permissions(mode); + if (S_ISLNK(mode)) + return S_IFLNK; + if (S_ISDIR(mode)) + return S_IFDIR; + return S_IFGITLINK; } -#define cache_entry_size(len) ((offsetof(struct cache_entry,name) + (len) + 8) & ~7) +#define flexible_size(STRUCT,len) ((offsetof(struct STRUCT,name) + (len) + 8) & ~7) +#define cache_entry_size(len) flexible_size(cache_entry,len) +#define ondisk_cache_entry_size(len) flexible_size(ondisk_cache_entry,len) +#define ondisk_cache_entry_extended_size(len) flexible_size(ondisk_cache_entry_extended,len) + +struct index_state { + struct cache_entry **cache; + unsigned int cache_nr, cache_alloc, cache_changed; + struct string_list *resolve_undo; + struct cache_tree *cache_tree; + struct cache_time timestamp; + void *alloc; + unsigned name_hash_initialized : 1, + initialized : 1; + struct hash_table name_hash; +}; + +extern struct index_state the_index; -extern struct cache_entry **active_cache; -extern unsigned int active_nr, active_alloc, active_cache_changed; +/* Name hashing */ +extern void add_name_hash(struct index_state *istate, struct cache_entry *ce); +/* + * We don't actually *remove* it, we can just mark it invalid so that + * we won't find it in lookups. + * + * Not only would we have to search the lists (simple enough), but + * we'd also have to rehash other hash buckets in case this makes the + * hash bucket empty (common). So it's much better to just mark + * it. + */ +static inline void remove_name_hash(struct cache_entry *ce) +{ + ce->ce_flags |= CE_UNHASHED; +} + + +#ifndef NO_THE_INDEX_COMPATIBILITY_MACROS +#define active_cache (the_index.cache) +#define active_nr (the_index.cache_nr) +#define active_alloc (the_index.cache_alloc) +#define active_cache_changed (the_index.cache_changed) +#define active_cache_tree (the_index.cache_tree) + +#define read_cache() read_index(&the_index) +#define read_cache_from(path) read_index_from(&the_index, (path)) +#define read_cache_preload(pathspec) read_index_preload(&the_index, (pathspec)) +#define is_cache_unborn() is_index_unborn(&the_index) +#define read_cache_unmerged() read_index_unmerged(&the_index) +#define write_cache(newfd, cache, entries) write_index(&the_index, (newfd)) +#define discard_cache() discard_index(&the_index) +#define unmerged_cache() unmerged_index(&the_index) +#define cache_name_pos(name, namelen) index_name_pos(&the_index,(name),(namelen)) +#define add_cache_entry(ce, option) add_index_entry(&the_index, (ce), (option)) +#define rename_cache_entry_at(pos, new_name) rename_index_entry_at(&the_index, (pos), (new_name)) +#define remove_cache_entry_at(pos) remove_index_entry_at(&the_index, (pos)) +#define remove_file_from_cache(path) remove_file_from_index(&the_index, (path)) +#define add_to_cache(path, st, flags) add_to_index(&the_index, (path), (st), (flags)) +#define add_file_to_cache(path, flags) add_file_to_index(&the_index, (path), (flags)) +#define refresh_cache(flags) refresh_index(&the_index, (flags), NULL, NULL, NULL) +#define ce_match_stat(ce, st, options) ie_match_stat(&the_index, (ce), (st), (options)) +#define ce_modified(ce, st, options) ie_modified(&the_index, (ce), (st), (options)) +#define cache_name_exists(name, namelen, igncase) index_name_exists(&the_index, (name), (namelen), (igncase)) +#define cache_name_is_other(name, namelen) index_name_is_other(&the_index, (name), (namelen)) +#define resolve_undo_clear() resolve_undo_clear_index(&the_index) +#define unmerge_cache_entry_at(at) unmerge_index_entry_at(&the_index, at) +#define unmerge_cache(pathspec) unmerge_index(&the_index, pathspec) +#endif + +enum object_type { + OBJ_BAD = -1, + OBJ_NONE = 0, + OBJ_COMMIT = 1, + OBJ_TREE = 2, + OBJ_BLOB = 3, + OBJ_TAG = 4, + /* 5 for future expansion */ + OBJ_OFS_DELTA = 6, + OBJ_REF_DELTA = 7, + OBJ_ANY, + OBJ_MAX +}; + +static inline enum object_type object_type(unsigned int mode) +{ + return S_ISDIR(mode) ? OBJ_TREE : + S_ISGITLINK(mode) ? OBJ_COMMIT : + OBJ_BLOB; +} #define GIT_DIR_ENVIRONMENT "GIT_DIR" +#define GIT_NAMESPACE_ENVIRONMENT "GIT_NAMESPACE" +#define GIT_WORK_TREE_ENVIRONMENT "GIT_WORK_TREE" #define DEFAULT_GIT_DIR_ENVIRONMENT ".git" #define DB_ENVIRONMENT "GIT_OBJECT_DIRECTORY" #define INDEX_ENVIRONMENT "GIT_INDEX_FILE" #define GRAFT_ENVIRONMENT "GIT_GRAFT_FILE" +#define TEMPLATE_DIR_ENVIRONMENT "GIT_TEMPLATE_DIR" +#define CONFIG_ENVIRONMENT "GIT_CONFIG" +#define CONFIG_DATA_ENVIRONMENT "GIT_CONFIG_PARAMETERS" +#define EXEC_PATH_ENVIRONMENT "GIT_EXEC_PATH" +#define CEILING_DIRECTORIES_ENVIRONMENT "GIT_CEILING_DIRECTORIES" +#define NO_REPLACE_OBJECTS_ENVIRONMENT "GIT_NO_REPLACE_OBJECTS" +#define GITATTRIBUTES_FILE ".gitattributes" +#define INFOATTRIBUTES_FILE "info/attributes" +#define ATTRIBUTE_MACRO_PREFIX "[attr]" +#define GIT_NOTES_REF_ENVIRONMENT "GIT_NOTES_REF" +#define GIT_NOTES_DEFAULT_REF "refs/notes/commits" +#define GIT_NOTES_DISPLAY_REF_ENVIRONMENT "GIT_NOTES_DISPLAY_REF" +#define GIT_NOTES_REWRITE_REF_ENVIRONMENT "GIT_NOTES_REWRITE_REF" +#define GIT_NOTES_REWRITE_MODE_ENVIRONMENT "GIT_NOTES_REWRITE_MODE" + +/* + * Repository-local GIT_* environment variables + * The array is NULL-terminated to simplify its usage in contexts such + * environment creation or simple walk of the list. + * The number of non-NULL entries is available as a macro. + */ +#define LOCAL_REPO_ENV_SIZE 9 +extern const char *const local_repo_env[LOCAL_REPO_ENV_SIZE + 1]; -extern char *get_git_dir(void); +extern int is_bare_repository_cfg; +extern int is_bare_repository(void); +extern int is_inside_git_dir(void); +extern char *git_work_tree_cfg; +extern int is_inside_work_tree(void); +extern int have_git_dir(void); +extern const char *get_git_dir(void); extern char *get_object_directory(void); -extern char *get_refs_directory(void); extern char *get_index_file(void); extern char *get_graft_file(void); +extern int set_git_dir(const char *path); +extern const char *get_git_namespace(void); +extern const char *strip_namespace(const char *namespaced_ref); +extern const char *get_git_work_tree(void); +extern const char *read_gitfile(const char *path); +extern void set_git_work_tree(const char *tree); #define ALTERNATE_DB_ENVIRONMENT "GIT_ALTERNATE_OBJECT_DIRECTORIES" extern const char **get_pathspec(const char *prefix, const char **pathspec); +extern const char *pathspec_prefix(const char *prefix, const char **pathspec); +extern void setup_work_tree(void); extern const char *setup_git_directory_gently(int *); extern const char *setup_git_directory(void); -extern const char *prefix_path(const char *prefix, int len, const char *path); +extern char *prefix_path(const char *prefix, int len, const char *path); extern const char *prefix_filename(const char *prefix, int len, const char *path); +extern int check_filename(const char *prefix, const char *name); +extern void verify_filename(const char *prefix, const char *name); +extern void verify_non_filename(const char *prefix, const char *name); + +#define INIT_DB_QUIET 0x0001 + +extern int set_git_dir_init(const char *git_dir, const char *real_git_dir, int); +extern int init_db(const char *template_dir, unsigned int flags); #define alloc_nr(x) (((x)+16)*3/2) +/* + * Realloc the buffer pointed at by variable 'x' so that it can hold + * at least 'nr' entries; the number of entries currently allocated + * is 'alloc', using the standard growing factor alloc_nr() macro. + * + * DO NOT USE any expression with side-effect for 'x', 'nr', or 'alloc'. + */ +#define ALLOC_GROW(x, nr, alloc) \ + do { \ + if ((nr) > alloc) { \ + if (alloc_nr(alloc) < (nr)) \ + alloc = (nr); \ + else \ + alloc = alloc_nr(alloc); \ + x = xrealloc((x), alloc * sizeof(*(x))); \ + } \ + } while (0) + /* Initialize and use the cache information */ -extern int read_cache(void); -extern int write_cache(int newfd, struct cache_entry **cache, int entries); -extern int cache_name_pos(const char *name, int namelen); +extern int read_index(struct index_state *); +extern int read_index_preload(struct index_state *, const char **pathspec); +extern int read_index_from(struct index_state *, const char *path); +extern int is_index_unborn(struct index_state *); +extern int read_index_unmerged(struct index_state *); +extern int write_index(struct index_state *, int newfd); +extern int discard_index(struct index_state *); +extern int unmerged_index(const struct index_state *); +extern int verify_path(const char *path); +extern struct cache_entry *index_name_exists(struct index_state *istate, const char *name, int namelen, int igncase); +extern int index_name_pos(const struct index_state *, const char *name, int namelen); #define ADD_CACHE_OK_TO_ADD 1 /* Ok to add */ #define ADD_CACHE_OK_TO_REPLACE 2 /* Ok to replace file/directory */ #define ADD_CACHE_SKIP_DFCHECK 4 /* Ok to skip DF conflict checks */ -extern int add_cache_entry(struct cache_entry *ce, int option); -extern int remove_cache_entry_at(int pos); -extern int remove_file_from_cache(const char *path); +#define ADD_CACHE_JUST_APPEND 8 /* Append only; tree.c::read_tree() */ +#define ADD_CACHE_NEW_ONLY 16 /* Do not replace existing ones */ +extern int add_index_entry(struct index_state *, struct cache_entry *ce, int option); +extern void rename_index_entry_at(struct index_state *, int pos, const char *new_name); +extern int remove_index_entry_at(struct index_state *, int pos); +extern void remove_marked_cache_entries(struct index_state *istate); +extern int remove_file_from_index(struct index_state *, const char *path); +#define ADD_CACHE_VERBOSE 1 +#define ADD_CACHE_PRETEND 2 +#define ADD_CACHE_IGNORE_ERRORS 4 +#define ADD_CACHE_IGNORE_REMOVAL 8 +#define ADD_CACHE_INTENT 16 +extern int add_to_index(struct index_state *, const char *path, struct stat *, int flags); +extern int add_file_to_index(struct index_state *, const char *path, int flags); +extern struct cache_entry *make_cache_entry(unsigned int mode, const unsigned char *sha1, const char *path, int stage, int refresh); extern int ce_same_name(struct cache_entry *a, struct cache_entry *b); -extern int ce_match_stat(struct cache_entry *ce, struct stat *st, int); -extern int ce_modified(struct cache_entry *ce, struct stat *st, int); -extern int ce_path_match(const struct cache_entry *ce, const char **pathspec); -extern int index_fd(unsigned char *sha1, int fd, struct stat *st, int write_object, const char *type); -extern int index_pipe(unsigned char *sha1, int fd, const char *type, int write_object); -extern int index_path(unsigned char *sha1, const char *path, struct stat *st, int write_object); +extern int index_name_is_other(const struct index_state *, const char *, int); + +/* do stat comparison even if CE_VALID is true */ +#define CE_MATCH_IGNORE_VALID 01 +/* do not check the contents but report dirty on racily-clean entries */ +#define CE_MATCH_RACY_IS_DIRTY 02 +/* do stat comparison even if CE_SKIP_WORKTREE is true */ +#define CE_MATCH_IGNORE_SKIP_WORKTREE 04 +extern int ie_match_stat(const struct index_state *, struct cache_entry *, struct stat *, unsigned int); +extern int ie_modified(const struct index_state *, struct cache_entry *, struct stat *, unsigned int); + +struct pathspec { + const char **raw; /* get_pathspec() result, not freed by free_pathspec() */ + int nr; + unsigned int has_wildcard:1; + unsigned int recursive:1; + int max_depth; + struct pathspec_item { + const char *match; + int len; + unsigned int use_wildcard:1; + } *items; +}; + +extern int init_pathspec(struct pathspec *, const char **); +extern void free_pathspec(struct pathspec *); +extern int ce_path_match(const struct cache_entry *ce, const struct pathspec *pathspec); + +#define HASH_WRITE_OBJECT 1 +#define HASH_FORMAT_CHECK 2 +extern int index_fd(unsigned char *sha1, int fd, struct stat *st, enum object_type type, const char *path, unsigned flags); +extern int index_path(unsigned char *sha1, const char *path, struct stat *st, unsigned flags); extern void fill_stat_cache_info(struct cache_entry *ce, struct stat *st); -struct cache_file { - struct cache_file *next; - char lockfile[PATH_MAX]; +#define REFRESH_REALLY 0x0001 /* ignore_valid */ +#define REFRESH_UNMERGED 0x0002 /* allow unmerged */ +#define REFRESH_QUIET 0x0004 /* be quiet about it */ +#define REFRESH_IGNORE_MISSING 0x0008 /* ignore non-existent */ +#define REFRESH_IGNORE_SUBMODULES 0x0010 /* ignore submodules */ +#define REFRESH_IN_PORCELAIN 0x0020 /* user friendly output, not "needs update" */ +extern int refresh_index(struct index_state *, unsigned int flags, const char **pathspec, char *seen, const char *header_msg); + +struct lock_file { + struct lock_file *next; + int fd; + pid_t owner; + char on_list; + char filename[PATH_MAX]; }; -extern int hold_index_file_for_update(struct cache_file *, const char *path); -extern int commit_index_file(struct cache_file *); -extern void rollback_index_file(struct cache_file *); +#define LOCK_DIE_ON_ERROR 1 +#define LOCK_NODEREF 2 +extern int unable_to_lock_error(const char *path, int err); +extern NORETURN void unable_to_lock_index_die(const char *path, int err); +extern int hold_lock_file_for_update(struct lock_file *, const char *path, int); +extern int hold_lock_file_for_append(struct lock_file *, const char *path, int); +extern int commit_lock_file(struct lock_file *); +extern void update_index_if_able(struct index_state *, struct lock_file *); + +extern int hold_locked_index(struct lock_file *, int); +extern int commit_locked_index(struct lock_file *); +extern void set_alternate_index_output(const char *); +extern int close_lock_file(struct lock_file *); +extern void rollback_lock_file(struct lock_file *); +extern int delete_ref(const char *, const unsigned char *sha1, int delopt); /* Environment bits from configuration mechanism */ extern int trust_executable_bit; +extern int trust_ctime; +extern int quote_path_fully; +extern int has_symlinks; +extern int minimum_abbrev, default_abbrev; +extern int ignore_case; extern int assume_unchanged; -extern int only_use_symrefs; -extern int diff_rename_limit_default; +extern int prefer_symlink_refs; +extern int log_all_ref_updates; +extern int warn_ambiguous_refs; extern int shared_repository; extern const char *apply_default_whitespace; +extern const char *apply_default_ignorewhitespace; +extern const char *git_attributes_file; +extern int zlib_compression_level; +extern int core_compression_level; +extern int core_compression_seen; +extern size_t packed_git_window_size; +extern size_t packed_git_limit; +extern size_t delta_base_cache_limit; +extern unsigned long big_file_threshold; +extern int read_replace_refs; +extern int fsync_object_files; +extern int core_preload_index; +extern int core_apply_sparse_checkout; + +enum branch_track { + BRANCH_TRACK_UNSPECIFIED = -1, + BRANCH_TRACK_NEVER = 0, + BRANCH_TRACK_REMOTE, + BRANCH_TRACK_ALWAYS, + BRANCH_TRACK_EXPLICIT, + BRANCH_TRACK_OVERRIDE +}; + +enum rebase_setup_type { + AUTOREBASE_NEVER = 0, + AUTOREBASE_LOCAL, + AUTOREBASE_REMOTE, + AUTOREBASE_ALWAYS +}; + +enum push_default_type { + PUSH_DEFAULT_NOTHING = 0, + PUSH_DEFAULT_MATCHING, + PUSH_DEFAULT_UPSTREAM, + PUSH_DEFAULT_CURRENT +}; + +extern enum branch_track git_branch_track; +extern enum rebase_setup_type autorebase; +extern enum push_default_type push_default; + +enum object_creation_mode { + OBJECT_CREATION_USES_HARDLINKS = 0, + OBJECT_CREATION_USES_RENAMES = 1 +}; + +extern enum object_creation_mode object_creation_mode; + +extern char *notes_ref_name; + +extern int grafts_replace_parents; #define GIT_REPO_VERSION 0 extern int repository_format_version; @@ -181,62 +652,192 @@ extern int check_repository_format(void); #define DATA_CHANGED 0x0020 #define TYPE_CHANGED 0x0040 +extern char *mksnpath(char *buf, size_t n, const char *fmt, ...) + __attribute__((format (printf, 3, 4))); +extern char *git_snpath(char *buf, size_t n, const char *fmt, ...) + __attribute__((format (printf, 3, 4))); +extern char *git_pathdup(const char *fmt, ...) + __attribute__((format (printf, 1, 2))); + /* Return a statically allocated filename matching the sha1 signature */ extern char *mkpath(const char *fmt, ...) __attribute__((format (printf, 1, 2))); extern char *git_path(const char *fmt, ...) __attribute__((format (printf, 1, 2))); +extern char *git_path_submodule(const char *path, const char *fmt, ...) + __attribute__((format (printf, 2, 3))); + extern char *sha1_file_name(const unsigned char *sha1); extern char *sha1_pack_name(const unsigned char *sha1); extern char *sha1_pack_index_name(const unsigned char *sha1); extern const char *find_unique_abbrev(const unsigned char *sha1, int); extern const unsigned char null_sha1[20]; +static inline int hashcmp(const unsigned char *sha1, const unsigned char *sha2) +{ + int i; + + for (i = 0; i < 20; i++, sha1++, sha2++) { + if (*sha1 != *sha2) + return *sha1 - *sha2; + } + + return 0; +} + +static inline int is_null_sha1(const unsigned char *sha1) +{ + return !hashcmp(sha1, null_sha1); +} + +static inline void hashcpy(unsigned char *sha_dst, const unsigned char *sha_src) +{ + memcpy(sha_dst, sha_src, 20); +} +static inline void hashclr(unsigned char *hash) +{ + memset(hash, 0, 20); +} + +#define EMPTY_TREE_SHA1_HEX \ + "4b825dc642cb6eb9a060e54bf8d69288fbee4904" +#define EMPTY_TREE_SHA1_BIN_LITERAL \ + "\x4b\x82\x5d\xc6\x42\xcb\x6e\xb9\xa0\x60" \ + "\xe5\x4b\xf8\xd6\x92\x88\xfb\xee\x49\x04" +#define EMPTY_TREE_SHA1_BIN \ + ((const unsigned char *) EMPTY_TREE_SHA1_BIN_LITERAL) + int git_mkstemp(char *path, size_t n, const char *template); -int adjust_shared_perm(const char *path); +int git_mkstemps(char *path, size_t n, const char *template, int suffix_len); + +/* set default permissions by passing mode arguments to open(2) */ +int git_mkstemps_mode(char *pattern, int suffix_len, int mode); +int git_mkstemp_mode(char *pattern, int mode); + +/* + * NOTE NOTE NOTE!! + * + * PERM_UMASK, OLD_PERM_GROUP and OLD_PERM_EVERYBODY enumerations must + * not be changed. Old repositories have core.sharedrepository written in + * numeric format, and therefore these values are preserved for compatibility + * reasons. + */ +enum sharedrepo { + PERM_UMASK = 0, + OLD_PERM_GROUP = 1, + OLD_PERM_EVERYBODY = 2, + PERM_GROUP = 0660, + PERM_EVERYBODY = 0664 +}; +int git_config_perm(const char *var, const char *value); +int set_shared_perm(const char *path, int mode); +#define adjust_shared_perm(path) set_shared_perm((path), 0) int safe_create_leading_directories(char *path); -char *safe_strncpy(char *, const char *, size_t); +int safe_create_leading_directories_const(const char *path); +int mkdir_in_gitdir(const char *path); +extern char *expand_user_path(const char *path); char *enter_repo(char *path, int strict); +static inline int is_absolute_path(const char *path) +{ + return is_dir_sep(path[0]) || has_dos_drive_prefix(path); +} +int is_directory(const char *); +const char *real_path(const char *path); +const char *absolute_path(const char *path); +const char *relative_path(const char *abs, const char *base); +int normalize_path_copy(char *dst, const char *src); +int longest_ancestor_length(const char *path, const char *prefix_list); +char *strip_path_suffix(const char *path, const char *suffix); +int daemon_avoid_alias(const char *path); +int offset_1st_component(const char *path); + +/* object replacement */ +#define READ_SHA1_FILE_REPLACE 1 +extern void *read_sha1_file_extended(const unsigned char *sha1, enum object_type *type, unsigned long *size, unsigned flag); +static inline void *read_sha1_file(const unsigned char *sha1, enum object_type *type, unsigned long *size) +{ + return read_sha1_file_extended(sha1, type, size, READ_SHA1_FILE_REPLACE); +} +extern const unsigned char *do_lookup_replace_object(const unsigned char *sha1); +static inline const unsigned char *lookup_replace_object(const unsigned char *sha1) +{ + if (!read_replace_refs) + return sha1; + return do_lookup_replace_object(sha1); +} /* Read and unpack a sha1 file into memory, write memory to a sha1 file */ -extern int unpack_sha1_header(z_stream *stream, void *map, unsigned long mapsize, void *buffer, unsigned long size); -extern int parse_sha1_header(char *hdr, char *type, unsigned long *sizep); -extern int sha1_object_info(const unsigned char *, char *, unsigned long *); -extern void * unpack_sha1_file(void *map, unsigned long mapsize, char *type, unsigned long *size); -extern void * read_sha1_file(const unsigned char *sha1, char *type, unsigned long *size); -extern int write_sha1_file(void *buf, unsigned long len, const char *type, unsigned char *return_sha1); -extern char *write_sha1_file_prepare(void *buf, - unsigned long len, - const char *type, - unsigned char *sha1, - unsigned char *hdr, - int *hdrlen); +extern int sha1_object_info(const unsigned char *, unsigned long *); +extern int hash_sha1_file(const void *buf, unsigned long len, const char *type, unsigned char *sha1); +extern int write_sha1_file(const void *buf, unsigned long len, const char *type, unsigned char *return_sha1); +extern int pretend_sha1_file(void *, unsigned long, enum object_type, unsigned char *); +extern int force_object_loose(const unsigned char *sha1, time_t mtime); +extern void *map_sha1_file(const unsigned char *sha1, unsigned long *size); +extern int unpack_sha1_header(git_zstream *stream, unsigned char *map, unsigned long mapsize, void *buffer, unsigned long bufsiz); +extern int parse_sha1_header(const char *hdr, unsigned long *sizep); + +/* global flag to enable extra checks when accessing packed objects */ +extern int do_check_packed_object_crc; + +/* for development: log offset of pack access */ +extern const char *log_pack_access; extern int check_sha1_signature(const unsigned char *sha1, void *buf, unsigned long size, const char *type); -extern int write_sha1_from_fd(const unsigned char *sha1, int fd, char *buffer, - size_t bufsize, size_t *bufposn); -extern int write_sha1_to_fd(int fd, const unsigned char *sha1); -extern int move_temp_to_file(const char *tmpfile, char *filename); +extern int move_temp_to_file(const char *tmpfile, const char *filename); extern int has_sha1_pack(const unsigned char *sha1); extern int has_sha1_file(const unsigned char *sha1); +extern int has_loose_object_nonlocal(const unsigned char *sha1); -extern int has_pack_file(const unsigned char *sha1); extern int has_pack_index(const unsigned char *sha1); +extern void assert_sha1_type(const unsigned char *sha1, enum object_type expect); + +extern const signed char hexval_table[256]; +static inline unsigned int hexval(unsigned char c) +{ + return hexval_table[c]; +} + /* Convert to/from hex/sha1 representation */ -#define MINIMUM_ABBREV 4 -#define DEFAULT_ABBREV 7 +#define MINIMUM_ABBREV minimum_abbrev +#define DEFAULT_ABBREV default_abbrev + +struct object_context { + unsigned char tree[20]; + char path[PATH_MAX]; + unsigned mode; +}; extern int get_sha1(const char *str, unsigned char *sha1); +extern int get_sha1_with_mode_1(const char *str, unsigned char *sha1, unsigned *mode, int only_to_die, const char *prefix); +static inline int get_sha1_with_mode(const char *str, unsigned char *sha1, unsigned *mode) +{ + return get_sha1_with_mode_1(str, sha1, mode, 0, NULL); +} +extern int get_sha1_with_context_1(const char *name, unsigned char *sha1, struct object_context *orc, int only_to_die, const char *prefix); +static inline int get_sha1_with_context(const char *str, unsigned char *sha1, struct object_context *orc) +{ + return get_sha1_with_context_1(str, sha1, orc, 0, NULL); +} extern int get_sha1_hex(const char *hex, unsigned char *sha1); extern char *sha1_to_hex(const unsigned char *sha1); /* static buffer result! */ extern int read_ref(const char *filename, unsigned char *sha1); -extern const char *resolve_ref(const char *path, unsigned char *sha1, int); -extern int create_symref(const char *git_HEAD, const char *refs_heads_master); -extern int validate_symref(const char *git_HEAD); +extern const char *resolve_ref(const char *path, unsigned char *sha1, int, int *); +extern int dwim_ref(const char *str, int len, unsigned char *sha1, char **ref); +extern int dwim_log(const char *str, int len, unsigned char *sha1, char **ref); +extern int interpret_branch_name(const char *str, struct strbuf *); +extern int get_sha1_mb(const char *str, unsigned char *sha1); + +extern int refname_match(const char *abbrev_name, const char *full_name, const char **rules); +extern const char *ref_rev_parse_rules[]; +extern const char *ref_fetch_rules[]; + +extern int create_symref(const char *ref, const char *refs_heads_master, const char *logmsg); +extern int validate_headref(const char *ref); extern int base_name_compare(const char *name1, int len1, int mode1, const char *name2, int len2, int mode2); +extern int df_name_compare(const char *name1, int len1, int mode1, const char *name2, int len2, int mode2); extern int cache_name_compare(const char *name1, int len1, const char *name2, int len2); extern void *read_object_with_reference(const unsigned char *sha1, @@ -244,14 +845,41 @@ extern void *read_object_with_reference(const unsigned char *sha1, unsigned long *size, unsigned char *sha1_ret); -const char *show_date(unsigned long time, int timezone); +extern struct object *peel_to_type(const char *name, int namelen, + struct object *o, enum object_type); + +enum date_mode { + DATE_NORMAL = 0, + DATE_RELATIVE, + DATE_SHORT, + DATE_LOCAL, + DATE_ISO8601, + DATE_RFC2822, + DATE_RAW +}; + +const char *show_date(unsigned long time, int timezone, enum date_mode mode); +const char *show_date_relative(unsigned long time, int tz, + const struct timeval *now, + char *timebuf, + size_t timebuf_size); int parse_date(const char *date, char *buf, int bufsize); +int parse_date_basic(const char *date, unsigned long *timestamp, int *offset); void datestamp(char *buf, int bufsize); -unsigned long approxidate(const char *); +#define approxidate(s) approxidate_careful((s), NULL) +unsigned long approxidate_careful(const char *, int *); +unsigned long approxidate_relative(const char *date, const struct timeval *now); +enum date_mode parse_date_format(const char *format); -extern int setup_ident(void); +#define IDENT_WARN_ON_NO_NAME 1 +#define IDENT_ERROR_ON_NO_NAME 2 +#define IDENT_NO_DATE 4 extern const char *git_author_info(int); extern const char *git_committer_info(int); +extern const char *fmt_ident(const char *name, const char *email, const char *date_str, int); +extern const char *fmt_name(const char *name, const char *email); +extern const char *git_editor(void); +extern const char *git_pager(int stdout_is_tty); struct checkout { const char *base_dir; @@ -262,7 +890,22 @@ struct checkout { refresh_cache:1; }; -extern int checkout_entry(struct cache_entry *ce, struct checkout *state, char *topath); +extern int checkout_entry(struct cache_entry *ce, const struct checkout *state, char *topath); + +struct cache_def { + char path[PATH_MAX + 1]; + int len; + int flags; + int track_flags; + int prefix_len_stat_func; +}; + +extern int has_symlink_leading_path(const char *name, int len); +extern int threaded_has_symlink_leading_path(struct cache_def *, const char *, int); +extern int check_leading_path(const char *name, int len); +extern int has_dirs_only_path(const char *name, int len, int prefix_len); +extern void schedule_dir_for_removal(const char *name, int len); +extern void remove_scheduled_dirs(void); extern struct alternate_object_database { struct alternate_object_database *next; @@ -270,23 +913,41 @@ extern struct alternate_object_database { char base[FLEX_ARRAY]; /* more */ } *alt_odb_list; extern void prepare_alt_odb(void); +extern void add_to_alternates_file(const char *reference); +typedef int alt_odb_fn(struct alternate_object_database *, void *); +extern void foreach_alt_odb(alt_odb_fn, void*); + +struct pack_window { + struct pack_window *next; + unsigned char *base; + off_t offset; + size_t len; + unsigned int last_used; + unsigned int inuse_cnt; +}; extern struct packed_git { struct packed_git *next; - unsigned long index_size; - unsigned long pack_size; - unsigned int *index_base; - void *pack_base; - unsigned int pack_last_used; - unsigned int pack_use_cnt; - int pack_local; + struct pack_window *windows; + off_t pack_size; + const void *index_data; + size_t index_size; + uint32_t num_objects; + uint32_t num_bad_objects; + unsigned char *bad_object_sha1; + int index_version; + time_t mtime; + int pack_fd; + unsigned pack_local:1, + pack_keep:1, + do_not_close:1; unsigned char sha1[20]; /* something like ".git/objects/pack/xxxxx.pack" */ char pack_name[FLEX_ARRAY]; /* more */ } *packed_git; struct pack_entry { - unsigned int offset; + off_t offset; unsigned char sha1[20]; struct packed_git *p; }; @@ -295,66 +956,262 @@ struct ref { struct ref *next; unsigned char old_sha1[20]; unsigned char new_sha1[20]; - unsigned char force; + char *symref; + unsigned int force:1, + merge:1, + nonfastforward:1, + deletion:1; + enum { + REF_STATUS_NONE = 0, + REF_STATUS_OK, + REF_STATUS_REJECT_NONFASTFORWARD, + REF_STATUS_REJECT_NODELETE, + REF_STATUS_UPTODATE, + REF_STATUS_REMOTE_REJECT, + REF_STATUS_EXPECTING_REPORT + } status; + char *remote_status; struct ref *peer_ref; /* when renaming */ char name[FLEX_ARRAY]; /* more */ }; -extern int git_connect(int fd[2], char *url, const char *prog); -extern int finish_connect(pid_t pid); +#define REF_NORMAL (1u << 0) +#define REF_HEADS (1u << 1) +#define REF_TAGS (1u << 2) + +extern struct ref *find_ref_by_name(const struct ref *list, const char *name); + +#define CONNECT_VERBOSE (1u << 0) +extern char *git_getpass(const char *prompt); +extern struct child_process *git_connect(int fd[2], const char *url, const char *prog, int flags); +extern int finish_connect(struct child_process *conn); +extern int git_connection_is_socket(struct child_process *conn); extern int path_match(const char *path, int nr, char **match); -extern int match_refs(struct ref *src, struct ref *dst, struct ref ***dst_tail, - int nr_refspec, char **refspec, int all); -extern int get_ack(int fd, unsigned char *result_sha1); -extern struct ref **get_remote_heads(int in, struct ref **list, int nr_match, char **match, int ignore_funny); +struct extra_have_objects { + int nr, alloc; + unsigned char (*array)[20]; +}; +extern struct ref **get_remote_heads(int in, struct ref **list, int nr_match, char **match, unsigned int flags, struct extra_have_objects *); extern int server_supports(const char *feature); -extern struct packed_git *parse_pack_index(unsigned char *sha1); -extern struct packed_git *parse_pack_index_file(const unsigned char *sha1, - char *idx_path); +extern struct packed_git *parse_pack_index(unsigned char *sha1, const char *idx_path); extern void prepare_packed_git(void); +extern void reprepare_packed_git(void); extern void install_packed_git(struct packed_git *pack); -extern struct packed_git *find_sha1_pack(const unsigned char *sha1, +extern struct packed_git *find_sha1_pack(const unsigned char *sha1, struct packed_git *packs); -extern int use_packed_git(struct packed_git *); -extern void unuse_packed_git(struct packed_git *); -extern struct packed_git *add_packed_git(char *, int, int); -extern int num_packed_objects(const struct packed_git *p); -extern int nth_packed_object_sha1(const struct packed_git *, int, unsigned char*); -extern int find_pack_entry_one(const unsigned char *, struct pack_entry *, struct packed_git *); -extern void *unpack_entry_gently(struct pack_entry *, char *, unsigned long *); -extern void packed_object_info_detail(struct pack_entry *, char *, unsigned long *, unsigned long *, unsigned int *, unsigned char *); +extern void pack_report(void); +extern int open_pack_index(struct packed_git *); +extern void close_pack_index(struct packed_git *); +extern unsigned char *use_pack(struct packed_git *, struct pack_window **, off_t, unsigned long *); +extern void close_pack_windows(struct packed_git *); +extern void unuse_pack(struct pack_window **); +extern void free_pack_by_name(const char *); +extern void clear_delta_base_cache(void); +extern struct packed_git *add_packed_git(const char *, int, int); +extern const unsigned char *nth_packed_object_sha1(struct packed_git *, uint32_t); +extern off_t nth_packed_object_offset(const struct packed_git *, uint32_t); +extern off_t find_pack_entry_one(const unsigned char *, struct packed_git *); +extern void *unpack_entry(struct packed_git *, off_t, enum object_type *, unsigned long *); +extern unsigned long unpack_object_header_buffer(const unsigned char *buf, unsigned long len, enum object_type *type, unsigned long *sizep); +extern unsigned long get_size_from_delta(struct packed_git *, struct pack_window **, off_t); +extern int unpack_object_header(struct packed_git *, struct pack_window **, off_t *, unsigned long *); + +struct object_info { + /* Request */ + unsigned long *sizep; + + /* Response */ + enum { + OI_CACHED, + OI_LOOSE, + OI_PACKED, + OI_DBCACHED + } whence; + union { + /* + * struct { + * ... Nothing to expose in this case + * } cached; + * struct { + * ... Nothing to expose in this case + * } loose; + */ + struct { + struct packed_git *pack; + off_t offset; + unsigned int is_delta; + } packed; + } u; +}; +extern int sha1_object_info_extended(const unsigned char *, struct object_info *); /* Dumb servers support */ extern int update_server_info(int); -typedef int (*config_fn_t)(const char *, const char *); -extern int git_default_config(const char *, const char *); -extern int git_config_from_file(config_fn_t fn, const char *); -extern int git_config(config_fn_t fn); +/* git_config_parse_key() returns these negated: */ +#define CONFIG_INVALID_KEY 1 +#define CONFIG_NO_SECTION_OR_NAME 2 +/* git_config_set(), git_config_set_multivar() return the above or these: */ +#define CONFIG_NO_LOCK -1 +#define CONFIG_INVALID_FILE 3 +#define CONFIG_NO_WRITE 4 +#define CONFIG_NOTHING_SET 5 +#define CONFIG_INVALID_PATTERN 6 + +typedef int (*config_fn_t)(const char *, const char *, void *); +extern int git_default_config(const char *, const char *, void *); +extern int git_config_from_file(config_fn_t fn, const char *, void *); +extern void git_config_push_parameter(const char *text); +extern int git_config_from_parameters(config_fn_t fn, void *data); +extern int git_config(config_fn_t fn, void *); +extern int git_config_early(config_fn_t fn, void *, const char *repo_config); +extern int git_parse_ulong(const char *, unsigned long *); extern int git_config_int(const char *, const char *); +extern unsigned long git_config_ulong(const char *, const char *); +extern int git_config_bool_or_int(const char *, const char *, int *); extern int git_config_bool(const char *, const char *); +extern int git_config_maybe_bool(const char *, const char *); +extern int git_config_string(const char **, const char *, const char *); +extern int git_config_pathname(const char **, const char *, const char *); extern int git_config_set(const char *, const char *); +extern int git_config_parse_key(const char *, char **, int *); extern int git_config_set_multivar(const char *, const char *, const char *, int); -extern int check_repository_format_version(const char *var, const char *value); +extern int git_config_rename_section(const char *, const char *); +extern const char *git_etc_gitconfig(void); +extern int check_repository_format_version(const char *var, const char *value, void *cb); +extern int git_env_bool(const char *, int); +extern int git_config_system(void); +extern int config_error_nonbool(const char *); +extern const char *get_log_output_encoding(void); +extern const char *get_commit_output_encoding(void); + +extern int git_config_parse_parameter(const char *, config_fn_t fn, void *data); + +extern const char *config_exclusive_filename; #define MAX_GITNAME (1000) extern char git_default_email[MAX_GITNAME]; extern char git_default_name[MAX_GITNAME]; +#define IDENT_NAME_GIVEN 01 +#define IDENT_MAIL_GIVEN 02 +#define IDENT_ALL_GIVEN (IDENT_NAME_GIVEN|IDENT_MAIL_GIVEN) +extern int user_ident_explicitly_given; +extern int user_ident_sufficiently_given(void); -#define MAX_ENCODING_LENGTH 64 -extern char git_commit_encoding[MAX_ENCODING_LENGTH]; +extern const char *git_commit_encoding; +extern const char *git_log_output_encoding; +extern const char *git_mailmap_file; +/* IO helper functions */ +extern void maybe_flush_or_die(FILE *, const char *); extern int copy_fd(int ifd, int ofd); +extern int copy_file(const char *dst, const char *src, int mode); +extern int copy_file_with_time(const char *dst, const char *src, int mode); +extern void write_or_die(int fd, const void *buf, size_t count); +extern int write_or_whine(int fd, const void *buf, size_t count, const char *msg); +extern int write_or_whine_pipe(int fd, const void *buf, size_t count, const char *msg); +extern void fsync_or_die(int fd, const char *); -/* Finish off pack transfer receiving end */ -extern int receive_unpack_pack(int fd[2], const char *me, int quiet); -extern int receive_keep_pack(int fd[2], const char *me, int quiet); +extern ssize_t read_in_full(int fd, void *buf, size_t count); +extern ssize_t write_in_full(int fd, const void *buf, size_t count); +static inline ssize_t write_str_in_full(int fd, const char *str) +{ + return write_in_full(fd, str, strlen(str)); +} /* pager.c */ extern void setup_pager(void); +extern const char *pager_program; +extern int pager_in_use(void); +extern int pager_use_color; + +extern const char *editor_program; +extern const char *askpass_program; +extern const char *excludes_file; + +/* base85 */ +int decode_85(char *dst, const char *line, int linelen); +void encode_85(char *buf, const unsigned char *data, int bytes); + +/* alloc.c */ +extern void *alloc_blob_node(void); +extern void *alloc_tree_node(void); +extern void *alloc_commit_node(void); +extern void *alloc_tag_node(void); +extern void *alloc_object_node(void); +extern void alloc_report(void); + +/* trace.c */ +__attribute__((format (printf, 1, 2))) +extern void trace_printf(const char *format, ...); +extern void trace_vprintf(const char *key, const char *format, va_list ap); +__attribute__((format (printf, 2, 3))) +extern void trace_argv_printf(const char **argv, const char *format, ...); +extern void trace_repo_setup(const char *prefix); +extern int trace_want(const char *key); +extern void trace_strbuf(const char *key, const struct strbuf *buf); + +void packet_trace_identity(const char *prog); + +/* add */ +/* + * return 0 if success, 1 - if addition of a file failed and + * ADD_FILES_IGNORE_ERRORS was specified in flags + */ +int add_files_to_cache(const char *prefix, const char **pathspec, int flags); + +/* diff.c */ +extern int diff_auto_refresh_index; + +/* match-trees.c */ +void shift_tree(const unsigned char *, const unsigned char *, unsigned char *, int); +void shift_tree_by(const unsigned char *, const unsigned char *, unsigned char *, const char *); + +/* + * whitespace rules. + * used by both diff and apply + * last two digits are tab width + */ +#define WS_BLANK_AT_EOL 0100 +#define WS_SPACE_BEFORE_TAB 0200 +#define WS_INDENT_WITH_NON_TAB 0400 +#define WS_CR_AT_EOL 01000 +#define WS_BLANK_AT_EOF 02000 +#define WS_TAB_IN_INDENT 04000 +#define WS_TRAILING_SPACE (WS_BLANK_AT_EOL|WS_BLANK_AT_EOF) +#define WS_DEFAULT_RULE (WS_TRAILING_SPACE|WS_SPACE_BEFORE_TAB|8) +#define WS_TAB_WIDTH_MASK 077 +extern unsigned whitespace_rule_cfg; +extern unsigned whitespace_rule(const char *); +extern unsigned parse_whitespace_rule(const char *); +extern unsigned ws_check(const char *line, int len, unsigned ws_rule); +extern void ws_check_emit(const char *line, int len, unsigned ws_rule, FILE *stream, const char *set, const char *reset, const char *ws); +extern char *whitespace_error_string(unsigned ws); +extern void ws_fix_copy(struct strbuf *, const char *, int, unsigned, int *); +extern int ws_blank_line(const char *line, int len, unsigned ws_rule); +#define ws_tab_width(rule) ((rule) & WS_TAB_WIDTH_MASK) + +/* ls-files */ +int report_path_error(const char *ps_matched, const char **pathspec, const char *prefix); +void overlay_tree_on_cache(const char *tree_name, const char *prefix); + +char *alias_lookup(const char *alias); +int split_cmdline(char *cmdline, const char ***argv); +/* Takes a negative value returned by split_cmdline */ +const char *split_cmdline_strerror(int cmdline_errno); + +/* git.c */ +struct startup_info { + int have_repository; + const char *prefix; +}; +extern struct startup_info *startup_info; + +/* builtin/merge.c */ +int checkout_fast_forward(const unsigned char *from, const unsigned char *to); #endif /* CACHE_H */ |