diff options
Diffstat (limited to 'cache.h')
| -rw-r--r-- | cache.h | 279 |
1 files changed, 175 insertions, 104 deletions
@@ -43,6 +43,14 @@ int git_deflate_end_gently(git_zstream *); int git_deflate(git_zstream *, int flush); unsigned long git_deflate_bound(git_zstream *, unsigned long); +/* The length in bytes and in hex digits of an object name (SHA-1 value). */ +#define GIT_SHA1_RAWSZ 20 +#define GIT_SHA1_HEXSZ (2 * GIT_SHA1_RAWSZ) + +struct object_id { + unsigned char hash[GIT_SHA1_RAWSZ]; +}; + #if defined(DT_UNKNOWN) && !defined(NO_D_TYPE_IN_DIRENT) #define DTYPE(de) ((de)->d_type) #else @@ -289,8 +297,11 @@ static inline unsigned int canon_mode(unsigned int mode) #define RESOLVE_UNDO_CHANGED (1 << 4) #define CACHE_TREE_CHANGED (1 << 5) #define SPLIT_INDEX_ORDERED (1 << 6) +#define UNTRACKED_CHANGED (1 << 7) struct split_index; +struct untracked_cache; + struct index_state { struct cache_entry **cache; unsigned int version; @@ -304,6 +315,7 @@ struct index_state { struct hashmap name_hash; struct hashmap dir_hash; unsigned char sha1[20]; + struct untracked_cache *untracked; }; extern struct index_state the_index; @@ -370,6 +382,7 @@ static inline enum object_type object_type(unsigned int mode) /* Double-check local_repo_env below if you add to this list. */ #define GIT_DIR_ENVIRONMENT "GIT_DIR" +#define GIT_COMMON_DIR_ENVIRONMENT "GIT_COMMON_DIR" #define GIT_NAMESPACE_ENVIRONMENT "GIT_NAMESPACE" #define GIT_WORK_TREE_ENVIRONMENT "GIT_WORK_TREE" #define GIT_PREFIX_ENVIRONMENT "GIT_PREFIX" @@ -384,6 +397,7 @@ static inline enum object_type object_type(unsigned int mode) #define EXEC_PATH_ENVIRONMENT "GIT_EXEC_PATH" #define CEILING_DIRECTORIES_ENVIRONMENT "GIT_CEILING_DIRECTORIES" #define NO_REPLACE_OBJECTS_ENVIRONMENT "GIT_NO_REPLACE_OBJECTS" +#define GIT_REPLACE_REF_BASE_ENVIRONMENT "GIT_REPLACE_REF_BASE" #define GITATTRIBUTES_FILE ".gitattributes" #define INFOATTRIBUTES_FILE "info/attributes" #define ATTRIBUTE_MACRO_PREFIX "[attr]" @@ -423,15 +437,27 @@ extern int is_inside_git_dir(void); extern char *git_work_tree_cfg; extern int is_inside_work_tree(void); extern const char *get_git_dir(void); +extern const char *get_git_common_dir(void); extern int is_git_directory(const char *path); extern char *get_object_directory(void); extern char *get_index_file(void); extern char *get_graft_file(void); extern int set_git_dir(const char *path); +extern int get_common_dir(struct strbuf *sb, const char *gitdir); 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); + +#define READ_GITFILE_ERR_STAT_FAILED 1 +#define READ_GITFILE_ERR_NOT_A_FILE 2 +#define READ_GITFILE_ERR_OPEN_FAILED 3 +#define READ_GITFILE_ERR_READ_FAILED 4 +#define READ_GITFILE_ERR_INVALID_FORMAT 5 +#define READ_GITFILE_ERR_NO_PATH 6 +#define READ_GITFILE_ERR_NOT_A_REPO 7 +#define READ_GITFILE_ERR_TOO_LARGE 8 +extern const char *read_gitfile_gently(const char *path, int *return_error_code); +#define read_gitfile(path) read_gitfile_gently((path), NULL) extern const char *resolve_gitdir(const char *suspect); extern void set_git_work_tree(const char *tree); @@ -552,6 +578,8 @@ extern void fill_stat_data(struct stat_data *sd, struct stat *st); * INODE_CHANGED, and DATA_CHANGED. */ extern int match_stat_data(const struct stat_data *sd, struct stat *st); +extern int match_stat_data_racy(const struct index_state *istate, + const struct stat_data *sd, struct stat *st); extern void fill_stat_cache_info(struct cache_entry *ce, struct stat *st); @@ -568,8 +596,6 @@ extern void update_index_if_able(struct index_state *, struct lock_file *); extern int hold_locked_index(struct lock_file *, int); extern void set_alternate_index_output(const char *); -extern int delete_ref(const char *, const unsigned char *sha1, unsigned int flags); - /* Environment bits from configuration mechanism */ extern int trust_executable_bit; extern int trust_ctime; @@ -605,6 +631,7 @@ extern unsigned long pack_size_limit_cfg; * been sought but there were none. */ extern int check_replace_refs; +extern char *git_replace_ref_base; extern int fsync_object_files; extern int core_preload_index; @@ -612,6 +639,7 @@ extern int core_apply_sparse_checkout; extern int precomposed_unicode; extern int protect_hfs; extern int protect_ntfs; +extern int git_db_env, git_index_env, git_graft_env, git_common_dir_env; /* * Include broken refs in all ref iterations, which will @@ -680,21 +708,59 @@ extern int check_repository_format(void); #define DATA_CHANGED 0x0020 #define TYPE_CHANGED 0x0040 +/* + * Return a statically allocated filename, either generically (mkpath), in + * the repository directory (git_path), or in a submodule's repository + * directory (git_path_submodule). In all cases, note that the result + * may be overwritten by another call to _any_ of the functions. Consider + * using the safer "dup" or "strbuf" formats below (in some cases, the + * unsafe versions have already been removed). + */ +extern const char *mkpath(const char *fmt, ...) __attribute__((format (printf, 1, 2))); +extern const char *git_path(const char *fmt, ...) __attribute__((format (printf, 1, 2))); + 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, ...) +extern void strbuf_git_path(struct strbuf *sb, const char *fmt, ...) + __attribute__((format (printf, 2, 3))); +extern void strbuf_git_path_submodule(struct strbuf *sb, const char *path, + const char *fmt, ...) __attribute__((format (printf, 3, 4))); extern char *git_pathdup(const char *fmt, ...) __attribute__((format (printf, 1, 2))); extern char *mkpathdup(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, ...) +extern char *git_pathdup_submodule(const char *path, const char *fmt, ...) __attribute__((format (printf, 2, 3))); +extern void report_linked_checkout_garbage(void); + +/* + * You can define a static memoized git path like: + * + * static GIT_PATH_FUNC(git_path_foo, "FOO"); + * + * or use one of the global ones below. + */ +#define GIT_PATH_FUNC(func, filename) \ + const char *func(void) \ + { \ + static char *ret; \ + if (!ret) \ + ret = git_pathdup(filename); \ + return ret; \ + } + +const char *git_path_cherry_pick_head(void); +const char *git_path_revert_head(void); +const char *git_path_squash_msg(void); +const char *git_path_merge_msg(void); +const char *git_path_merge_rr(void); +const char *git_path_merge_mode(void); +const char *git_path_merge_head(void); +const char *git_path_fetch_head(void); +const char *git_path_shallow(void); + /* * Return the name of the file in the local object database that would * be used to store a loose object with the specified sha1. The @@ -718,13 +784,13 @@ 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]; +extern const unsigned char null_sha1[GIT_SHA1_RAWSZ]; static inline int hashcmp(const unsigned char *sha1, const unsigned char *sha2) { int i; - for (i = 0; i < 20; i++, sha1++, sha2++) { + for (i = 0; i < GIT_SHA1_RAWSZ; i++, sha1++, sha2++) { if (*sha1 != *sha2) return *sha1 - *sha2; } @@ -732,20 +798,42 @@ static inline int hashcmp(const unsigned char *sha1, const unsigned char *sha2) return 0; } +static inline int oidcmp(const struct object_id *oid1, const struct object_id *oid2) +{ + return hashcmp(oid1->hash, oid2->hash); +} + static inline int is_null_sha1(const unsigned char *sha1) { return !hashcmp(sha1, null_sha1); } +static inline int is_null_oid(const struct object_id *oid) +{ + return !hashcmp(oid->hash, null_sha1); +} + static inline void hashcpy(unsigned char *sha_dst, const unsigned char *sha_src) { - memcpy(sha_dst, sha_src, 20); + memcpy(sha_dst, sha_src, GIT_SHA1_RAWSZ); } + +static inline void oidcpy(struct object_id *dst, const struct object_id *src) +{ + hashcpy(dst->hash, src->hash); +} + static inline void hashclr(unsigned char *hash) { - memset(hash, 0, 20); + memset(hash, 0, GIT_SHA1_RAWSZ); } +static inline void oidclr(struct object_id *oid) +{ + hashclr(oid->hash); +} + + #define EMPTY_TREE_SHA1_HEX \ "4b825dc642cb6eb9a060e54bf8d69288fbee4904" #define EMPTY_TREE_SHA1_BIN_LITERAL \ @@ -816,7 +904,6 @@ enum scld_error safe_create_leading_directories(char *path); enum scld_error safe_create_leading_directories_const(const char *path); int mkdir_in_gitdir(const char *path); -extern void home_config_paths(char **global, char **xdg, char *file); extern char *expand_user_path(const char *path); const char *enter_repo(const char *path, int strict); static inline int is_absolute_path(const char *path) @@ -836,8 +923,16 @@ char *strip_path_suffix(const char *path, const char *suffix); int daemon_avoid_alias(const char *path); extern int is_ntfs_dotgit(const char *name); +/** + * Return a newly allocated string with the evaluation of + * "$XDG_CONFIG_HOME/git/$filename" if $XDG_CONFIG_HOME is non-empty, otherwise + * "$HOME/.config/git/$filename". Return NULL upon error. + */ +extern char *xdg_config_home(const char *filename); + /* object replacement */ #define LOOKUP_REPLACE_OBJECT 1 +#define LOOKUP_UNKNOWN_OBJECT 2 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) { @@ -874,6 +969,7 @@ static inline const unsigned char *lookup_replace_object_extended(const unsigned 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 hash_sha1_file_literally(const void *buf, unsigned long len, const char *type, unsigned char *sha1, unsigned flags); 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 int git_open_noatime(const char *name); @@ -886,7 +982,7 @@ extern int do_check_packed_object_crc; extern int check_sha1_signature(const unsigned char *sha1, void *buf, unsigned long size, const char *type); -extern int move_temp_to_file(const char *tmpfile, const char *filename); +extern int finalize_object_file(const char *tmpfile, const char *filename); extern int has_sha1_pack(const unsigned char *sha1); @@ -894,8 +990,17 @@ extern int has_sha1_pack(const unsigned char *sha1); * Return true iff we have an object named sha1, whether local or in * an alternate object database, and whether packed or loose. This * function does not respect replace references. + * + * If the QUICK flag is set, do not re-check the pack directory + * when we cannot find the object (this means we may give a false + * negative answer if another process is simultaneously repacking). */ -extern int has_sha1_file(const unsigned char *sha1); +#define HAS_SHA1_QUICK 0x1 +extern int has_sha1_file_with_flags(const unsigned char *sha1, int flags); +static inline int has_sha1_file(const unsigned char *sha1) +{ + return has_sha1_file_with_flags(sha1, 0); +} /* * Return true iff an alternate object database has a loose object @@ -922,15 +1027,21 @@ struct object_context { unsigned char tree[20]; char path[PATH_MAX]; unsigned mode; + /* + * symlink_path is only used by get_tree_entry_follow_symlinks, + * and only for symlinks that point outside the repository. + */ + struct strbuf symlink_path; }; -#define GET_SHA1_QUIETLY 01 -#define GET_SHA1_COMMIT 02 -#define GET_SHA1_COMMITTISH 04 -#define GET_SHA1_TREE 010 -#define GET_SHA1_TREEISH 020 -#define GET_SHA1_BLOB 040 -#define GET_SHA1_ONLY_TO_DIE 04000 +#define GET_SHA1_QUIETLY 01 +#define GET_SHA1_COMMIT 02 +#define GET_SHA1_COMMITTISH 04 +#define GET_SHA1_TREE 010 +#define GET_SHA1_TREEISH 020 +#define GET_SHA1_BLOB 040 +#define GET_SHA1_FOLLOW_SYMLINKS 0100 +#define GET_SHA1_ONLY_TO_DIE 04000 extern int get_sha1(const char *str, unsigned char *sha1); extern int get_sha1_commit(const char *str, unsigned char *sha1); @@ -952,78 +1063,14 @@ extern int for_each_abbrev(const char *prefix, each_abbrev_fn, void *); * null-terminated string. */ extern int get_sha1_hex(const char *hex, unsigned char *sha1); +extern int get_oid_hex(const char *hex, struct object_id *sha1); extern char *sha1_to_hex(const unsigned char *sha1); /* static buffer result! */ -extern int read_ref_full(const char *refname, int resolve_flags, - unsigned char *sha1, int *flags); -extern int read_ref(const char *refname, unsigned char *sha1); +extern char *oid_to_hex(const struct object_id *oid); /* same static buffer as sha1_to_hex */ -/* - * Resolve a reference, recursively following symbolic refererences. - * - * Store the referred-to object's name in sha1 and return the name of - * the non-symbolic reference that ultimately pointed at it. The - * return value, if not NULL, is a pointer into either a static buffer - * or the input ref. - * - * If the reference cannot be resolved to an object, the behavior - * depends on the RESOLVE_REF_READING flag: - * - * - If RESOLVE_REF_READING is set, return NULL. - * - * - If RESOLVE_REF_READING is not set, clear sha1 and return the name of - * the last reference name in the chain, which will either be a non-symbolic - * reference or an undefined reference. If this is a prelude to - * "writing" to the ref, the return value is the name of the ref - * that will actually be created or changed. - * - * If the RESOLVE_REF_NO_RECURSE flag is passed, only resolves one - * level of symbolic reference. The value stored in sha1 for a symbolic - * reference will always be null_sha1 in this case, and the return - * value is the reference that the symref refers to directly. - * - * If flags is non-NULL, set the value that it points to the - * combination of REF_ISPACKED (if the reference was found among the - * packed references), REF_ISSYMREF (if the initial reference was a - * symbolic reference), REF_BAD_NAME (if the reference name is ill - * formed --- see RESOLVE_REF_ALLOW_BAD_NAME below), and REF_ISBROKEN - * (if the ref is malformed or has a bad name). See refs.h for more detail - * on each flag. - * - * If ref is not a properly-formatted, normalized reference, return - * NULL. If more than MAXDEPTH recursive symbolic lookups are needed, - * give up and return NULL. - * - * RESOLVE_REF_ALLOW_BAD_NAME allows resolving refs even when their - * name is invalid according to git-check-ref-format(1). If the name - * is bad then the value stored in sha1 will be null_sha1 and the two - * flags REF_ISBROKEN and REF_BAD_NAME will be set. - * - * Even with RESOLVE_REF_ALLOW_BAD_NAME, names that escape the refs/ - * directory and do not consist of all caps and underscores cannot be - * resolved. The function returns NULL for such ref names. - * Caps and underscores refers to the special refs, such as HEAD, - * FETCH_HEAD and friends, that all live outside of the refs/ directory. - */ -#define RESOLVE_REF_READING 0x01 -#define RESOLVE_REF_NO_RECURSE 0x02 -#define RESOLVE_REF_ALLOW_BAD_NAME 0x04 -extern const char *resolve_ref_unsafe(const char *ref, int resolve_flags, unsigned char *sha1, int *flags); -extern char *resolve_refdup(const char *ref, int resolve_flags, unsigned char *sha1, int *flags); - -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, int len, struct strbuf *); extern int get_sha1_mb(const char *str, unsigned char *sha1); -/* - * Return true iff abbrev_name is a possible abbreviation for - * full_name according to the rules defined by ref_rev_parse_rules in - * refs.c. - */ -extern int refname_match(const char *abbrev_name, const char *full_name); - -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); @@ -1039,18 +1086,30 @@ extern void *read_object_with_reference(const unsigned char *sha1, 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_ISO8601_STRICT, - DATE_RFC2822, - DATE_RAW +struct date_mode { + enum date_mode_type { + DATE_NORMAL = 0, + DATE_RELATIVE, + DATE_SHORT, + DATE_LOCAL, + DATE_ISO8601, + DATE_ISO8601_STRICT, + DATE_RFC2822, + DATE_STRFTIME, + DATE_RAW + } type; + const char *strftime_fmt; }; -const char *show_date(unsigned long time, int timezone, enum date_mode mode); +/* + * Convenience helper for passing a constant type, like: + * + * show_date(t, tz, DATE_MODE(NORMAL)); + */ +#define DATE_MODE(t) date_mode_from_type(DATE_##t) +struct date_mode *date_mode_from_type(enum date_mode_type type); + +const char *show_date(unsigned long time, int timezone, const struct date_mode *mode); void show_date_relative(unsigned long time, int tz, const struct timeval *now, struct strbuf *timebuf); int parse_date(const char *date, struct strbuf *out); @@ -1060,7 +1119,7 @@ void datestamp(struct strbuf *out); #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); +void parse_date_format(const char *format, struct date_mode *mode); int date_overflows(unsigned long date); #define IDENT_STRICT 1 @@ -1097,7 +1156,8 @@ extern int split_ident_line(struct ident_split *, const char *, int); * the ident_split. It will also sanity-check the values and produce * a well-known sentinel date if they appear bogus. */ -const char *show_ident_date(const struct ident_split *id, enum date_mode mode); +const char *show_ident_date(const struct ident_split *id, + const struct date_mode *mode); /* * Compare split idents for equality or strict ordering. Note that we @@ -1174,6 +1234,7 @@ extern struct packed_git { int pack_fd; unsigned pack_local:1, pack_keep:1, + freshened:1, do_not_close:1; unsigned char sha1[20]; /* something like ".git/objects/pack/xxxxx.pack" */ @@ -1289,14 +1350,16 @@ int for_each_loose_file_in_objdir_buf(struct strbuf *path, /* * Iterate over loose and packed objects in both the local - * repository and any alternates repositories. + * repository and any alternates repositories (unless the + * LOCAL_ONLY flag is set). */ +#define FOR_EACH_OBJECT_LOCAL_ONLY 0x1 typedef int each_packed_object_fn(const unsigned char *sha1, struct packed_git *pack, uint32_t pos, void *data); -extern int for_each_loose_object(each_loose_object_fn, void *); -extern int for_each_packed_object(each_packed_object_fn, void *); +extern int for_each_loose_object(each_loose_object_fn, void *, unsigned flags); +extern int for_each_packed_object(each_packed_object_fn, void *, unsigned flags); struct object_info { /* Request */ @@ -1304,6 +1367,7 @@ struct object_info { unsigned long *sizep; unsigned long *disk_sizep; unsigned char *delta_base_sha1; + struct strbuf *typename; /* Response */ enum { @@ -1492,9 +1556,13 @@ extern const char *git_mailmap_blob; extern void maybe_flush_or_die(FILE *, const char *); __attribute__((format (printf, 2, 3))) extern void fprintf_or_die(FILE *, const char *fmt, ...); + +#define COPY_READ_ERROR (-2) +#define COPY_WRITE_ERROR (-3) 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); @@ -1508,6 +1576,8 @@ static inline ssize_t write_str_in_full(int fd, const char *str) { return write_in_full(fd, str, strlen(str)); } +__attribute__((format (printf, 3, 4))) +extern int write_file(const char *path, int fatal, const char *fmt, ...); /* pager.c */ extern void setup_pager(void); @@ -1631,5 +1701,6 @@ int stat_validity_check(struct stat_validity *sv, const char *path); void stat_validity_update(struct stat_validity *sv, int fd); int versioncmp(const char *s1, const char *s2); +void sleep_millisec(int millisec); #endif /* CACHE_H */ |