diff options
Diffstat (limited to 'cache.h')
| -rw-r--r-- | cache.h | 512 |
1 files changed, 381 insertions, 131 deletions
@@ -9,13 +9,32 @@ #include "convert.h" #include "trace.h" #include "string-list.h" +#include "pack-revindex.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 +#ifndef platform_SHA_CTX +/* + * platform's underlying implementation of SHA-1; could be OpenSSL, + * blk_SHA, Apple CommonCrypto, etc... Note that including + * SHA1_HEADER may have already defined platform_SHA_CTX for our + * own implementations like block-sha1 and ppc-sha1, so we list + * the default for OpenSSL compatible SHA-1 implementations here. + */ +#define platform_SHA_CTX SHA_CTX +#define platform_SHA1_Init SHA1_Init +#define platform_SHA1_Update SHA1_Update +#define platform_SHA1_Final SHA1_Final +#endif + +#define git_SHA_CTX platform_SHA_CTX +#define git_SHA1_Init platform_SHA1_Init +#define git_SHA1_Update platform_SHA1_Update +#define git_SHA1_Final platform_SHA1_Final + +#ifdef SHA1_MAX_BLOCK_SIZE +#include "compat/sha1-chunked.h" +#undef git_SHA1_Update +#define git_SHA1_Update git_SHA1_Update_Chunked #endif #include <zlib.h> @@ -154,7 +173,7 @@ struct cache_entry { unsigned int ce_flags; unsigned int ce_namelen; unsigned int index; /* for link extension */ - unsigned char sha1[20]; + struct object_id oid; char name[FLEX_ARRAY]; /* more */ }; @@ -196,7 +215,7 @@ struct cache_entry { #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_EXTENDED2 (1U << 31) #define CE_EXTENDED_FLAGS (CE_INTENT_TO_ADD | CE_SKIP_WORKTREE) @@ -210,7 +229,9 @@ struct cache_entry { #error "CE_EXTENDED_FLAGS out of range" #endif +/* Forward structure decls */ struct pathspec; +struct child_process; /* * Copy the sha1 and stat state of a cache entry from one to @@ -241,6 +262,7 @@ static inline unsigned create_ce_flags(unsigned stage) #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_intent_to_add(ce) ((ce)->ce_flags & CE_INTENT_TO_ADD) #define ce_permissions(mode) (((mode) & 0100) ? 0755 : 0644) static inline unsigned int create_ce_mode(unsigned int mode) @@ -347,6 +369,7 @@ extern void free_name_hash(struct index_state *istate); #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 chmod_cache_entry(ce, flip) chmod_index_entry(&the_index, (ce), (flip)) #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)) @@ -397,6 +420,7 @@ 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]" @@ -430,6 +454,12 @@ static inline enum object_type object_type(unsigned int mode) */ extern const char * const local_repo_env[]; +/* + * Returns true iff we have a configured git repository (either via + * setup_git_directory, or in the environment via $GIT_DIR). + */ +int have_git_dir(void); + extern int is_bare_repository_cfg; extern int is_bare_repository(void); extern int is_inside_git_dir(void); @@ -437,16 +467,45 @@ 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_noenv(struct strbuf *sb, const char *gitdir); 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); + +/* + * Return true if the given path is a git directory; note that this _just_ + * looks at the directory itself. If you want to know whether "foo/.git" + * is a repository, you must feed that path, not just "foo". + */ +extern int is_git_directory(const char *path); + +/* + * Return 1 if the given path is the root of a git repository or + * submodule, else 0. Will not return 1 for bare repositories with the + * exception of creating a bare repository in "foo/.git" and calling + * is_git_repository("foo"). + * + * If we run into read errors, we err on the side of saying "yes, it is", + * as we usually consider sub-repos precious, and would prefer to err on the + * side of not disrupting or deleting them. + */ +extern int is_nonbare_repository_dir(struct strbuf *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); @@ -467,9 +526,10 @@ extern void verify_non_filename(const char *prefix, const char *name); extern int path_inside_repo(const char *prefix, const char *path); #define INIT_DB_QUIET 0x0001 +#define INIT_DB_EXIST_OK 0x0002 -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); +extern int init_db(const char *git_dir, const char *real_git_dir, + const char *template_dir, unsigned int flags); extern void sanitize_stdfds(void); extern int daemonize(void); @@ -509,7 +569,8 @@ extern int write_locked_index(struct index_state *, struct lock_file *lock, unsi 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_dir_exists(struct index_state *istate, const char *name, int namelen); +extern int index_dir_exists(struct index_state *istate, const char *name, int namelen); +extern void adjust_dirname_case(struct index_state *istate, char *name); extern struct cache_entry *index_file_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 */ @@ -531,6 +592,7 @@ extern int remove_file_from_index(struct index_state *, const char *path); 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, unsigned int refresh_options); +extern int chmod_index_entry(struct index_state *, struct cache_entry *ce, char flip); extern int ce_same_name(const struct cache_entry *a, const struct cache_entry *b); extern void set_object_name_for_intent_to_add_entry(struct cache_entry *ce); extern int index_name_is_other(const struct index_state *, const char *, int); @@ -579,14 +641,13 @@ extern void fill_stat_cache_info(struct cache_entry *ce, struct stat *st); #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 struct pathspec *pathspec, char *seen, const char *header_msg); +extern struct cache_entry *refresh_cache_entry(struct cache_entry *, unsigned int); 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; @@ -600,10 +661,10 @@ extern int prefer_symlink_refs; extern int log_all_ref_updates; extern int warn_ambiguous_refs; extern int warn_on_object_refname_ambiguity; -extern int shared_repository; extern const char *apply_default_whitespace; extern const char *apply_default_ignorewhitespace; extern const char *git_attributes_file; +extern const char *git_hooks_path; extern int zlib_compression_level; extern int core_compression_level; extern int core_compression_seen; @@ -614,6 +675,16 @@ extern unsigned long big_file_threshold; extern unsigned long pack_size_limit_cfg; /* + * Accessors for the core.sharedrepository config which lazy-load the value + * from the config (if not already set). The "reset" function can be + * used to unset "set" or cached value, meaning that the value will be loaded + * fresh from the config file on the next call to get_shared_repository(). + */ +void set_shared_repository(int value); +int get_shared_repository(void); +void reset_shared_repository(void); + +/* * Do replace refs need to be checked this run? This variable is * initialized to true unless --no-replace-object is used or * $GIT_NO_REPLACE_OBJECTS is set, but is set to false by some @@ -622,6 +693,7 @@ 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; @@ -646,6 +718,14 @@ extern int ref_paranoia; extern char comment_line_char; extern int auto_comment_line_char; +/* Windows only */ +enum hide_dotfiles_type { + HIDE_DOTFILES_FALSE = 0, + HIDE_DOTFILES_TRUE, + HIDE_DOTFILES_DOTGITONLY +}; +extern enum hide_dotfiles_type hide_dotfiles; + enum branch_track { BRANCH_TRACK_UNSPECIFIED = -1, BRANCH_TRACK_NEVER = 0, @@ -686,9 +766,46 @@ extern char *notes_ref_name; extern int grafts_replace_parents; +/* + * GIT_REPO_VERSION is the version we write by default. The + * _READ variant is the highest number we know how to + * handle. + */ #define GIT_REPO_VERSION 0 -extern int repository_format_version; -extern int check_repository_format(void); +#define GIT_REPO_VERSION_READ 1 +extern int repository_format_precious_objects; + +struct repository_format { + int version; + int precious_objects; + int is_bare; + char *work_tree; + struct string_list unknown_extensions; +}; + +/* + * Read the repository format characteristics from the config file "path" into + * "format" struct. Returns the numeric version. On error, -1 is returned, + * format->version is set to -1, and all other fields in the struct are + * undefined. + */ +int read_repository_format(struct repository_format *format, const char *path); + +/* + * Verify that the repository described by repository_format is something we + * can read. If it is, return 0. Otherwise, return -1, and "err" will describe + * any errors encountered. + */ +int verify_repository_format(const struct repository_format *format, + struct strbuf *err); + +/* + * Check the repository format version in the path found in get_git_dir(), + * and die if it is a version we don't understand. Generally one would + * set_git_dir() before calling this, and use it only for "are we in a valid + * repo?". + */ +extern void check_repository_format(void); #define MTIME_CHANGED 0x0001 #define CTIME_CHANGED 0x0002 @@ -698,23 +815,65 @@ 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 const char *git_common_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 void strbuf_git_path(struct strbuf *sb, const char *fmt, ...) __attribute__((format (printf, 2, 3))); +extern void strbuf_git_common_path(struct strbuf *sb, const char *fmt, ...) + __attribute__((format (printf, 2, 3))); +extern char *git_path_buf(struct strbuf *buf, const char *fmt, ...) + __attribute__((format (printf, 2, 3))); +extern int 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 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 const 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 * return value is a pointer to a statically allocated buffer that is @@ -736,8 +895,26 @@ 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); +/* + * Return an abbreviated sha1 unique within this repository's object database. + * The result will be at least `len` characters long, and will be NUL + * terminated. + * + * The non-`_r` version returns a static buffer which will be overwritten by + * subsequent calls. + * + * The `_r` variant writes to a buffer supplied by the caller, which must be at + * least `GIT_SHA1_HEXSZ + 1` bytes. The return value is the number of bytes + * written (excluding the NUL terminator). + * + * Note that while this version avoids the static buffer, it is not fully + * reentrant, as it calls into other non-reentrant git code. + */ +extern const char *find_unique_abbrev(const unsigned char *sha1, int len); +extern int find_unique_abbrev_r(char *hex, const unsigned char *sha1, int len); + extern const unsigned char null_sha1[GIT_SHA1_RAWSZ]; +extern const struct object_id null_oid; static inline int hashcmp(const unsigned char *sha1, const unsigned char *sha2) { @@ -792,25 +969,40 @@ static inline void oidclr(struct object_id *oid) #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) +extern const struct object_id empty_tree_oid; +#define EMPTY_TREE_SHA1_BIN (empty_tree_oid.hash) #define EMPTY_BLOB_SHA1_HEX \ "e69de29bb2d1d6434b8b29ae775ad8c2e48c5391" #define EMPTY_BLOB_SHA1_BIN_LITERAL \ "\xe6\x9d\xe2\x9b\xb2\xd1\xd6\x43\x4b\x8b" \ "\x29\xae\x77\x5a\xd8\xc2\xe4\x8c\x53\x91" -#define EMPTY_BLOB_SHA1_BIN \ - ((const unsigned char *) EMPTY_BLOB_SHA1_BIN_LITERAL) +extern const struct object_id empty_blob_oid; +#define EMPTY_BLOB_SHA1_BIN (empty_blob_oid.hash) + static inline int is_empty_blob_sha1(const unsigned char *sha1) { return !hashcmp(sha1, EMPTY_BLOB_SHA1_BIN); } -int git_mkstemp(char *path, size_t n, const char *template); +static inline int is_empty_blob_oid(const struct object_id *oid) +{ + return !hashcmp(oid->hash, EMPTY_BLOB_SHA1_BIN); +} + +static inline int is_empty_tree_sha1(const unsigned char *sha1) +{ + return !hashcmp(sha1, EMPTY_TREE_SHA1_BIN); +} + +static inline int is_empty_tree_oid(const struct object_id *oid) +{ + return !hashcmp(oid->hash, EMPTY_TREE_SHA1_BIN); +} + -int git_mkstemps(char *path, size_t n, const char *template, int suffix_len); +int git_mkstemp(char *path, size_t n, const char *template); /* set default permissions by passing mode arguments to open(2) */ int git_mkstemps_mode(char *pattern, int suffix_len, int mode); @@ -845,6 +1037,11 @@ int adjust_shared_perm(const char *path); * directory while we were working. To be robust against this kind of * race, callers might want to try invoking the function again when it * returns SCLD_VANISHED. + * + * safe_create_leading_directories() temporarily changes path while it + * is working but restores it before returning. + * safe_create_leading_directories_const() doesn't modify path, even + * temporarily. */ enum scld_error { SCLD_OK = 0, @@ -935,7 +1132,7 @@ 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); @@ -955,6 +1152,9 @@ static inline int has_sha1_file(const unsigned char *sha1) return has_sha1_file_with_flags(sha1, 0); } +/* Same as the above, except for struct object_id. */ +extern int has_object_file(const struct object_id *oid); + /* * Return true iff an alternate object database has a loose object * with the specified name. This function does not respect replace @@ -972,6 +1172,16 @@ static inline unsigned int hexval(unsigned char c) return hexval_table[c]; } +/* + * Convert two consecutive hexadecimal digits into a char. Return a + * negative value on error. Don't run over the end of short strings. + */ +static inline int hex2chr(const char *s) +{ + int val = hexval(s[0]); + return (val < 0) ? val : (val << 4) | hexval(s[1]); +} + /* Convert to/from hex/sha1 representation */ #define MINIMUM_ABBREV minimum_abbrev #define DEFAULT_ABBREV default_abbrev @@ -1005,6 +1215,8 @@ extern int get_sha1_blob(const char *str, unsigned char *sha1); extern void maybe_die_on_misspelt_object_name(const char *name, const char *prefix); extern int get_sha1_with_context(const char *str, unsigned flags, unsigned char *sha1, struct object_context *orc); +extern int get_oid(const char *str, struct object_id *oid); + typedef int each_abbrev_fn(const unsigned char *sha1, void *); extern int for_each_abbrev(const char *prefix, each_abbrev_fn, void *); @@ -1018,78 +1230,25 @@ extern int for_each_abbrev(const char *prefix, each_abbrev_fn, void *); 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 char *oid_to_hex(const struct object_id *oid); /* same static buffer as sha1_to_hex */ -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); - /* - * 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. + * Convert a binary sha1 to its hex equivalent. The `_r` variant is reentrant, + * and writes the NUL-terminated output to the buffer `out`, which must be at + * least `GIT_SHA1_HEXSZ + 1` bytes, and returns a pointer to out for + * convenience. * - * 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. + * The non-`_r` variant returns a static buffer, but uses a ring of 4 + * buffers, making it safe to make multiple calls for a single statement, like: * - * 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. + * printf("%s -> %s", sha1_to_hex(one), sha1_to_hex(two)); */ -extern int refname_match(const char *abbrev_name, const char *full_name); +extern char *sha1_to_hex_r(char *out, const unsigned char *sha1); +extern char *oid_to_hex_r(char *out, const struct object_id *oid); +extern char *sha1_to_hex(const unsigned char *sha1); /* static buffer result! */ +extern char *oid_to_hex(const struct object_id *oid); /* same static buffer as sha1_to_hex */ + +extern int interpret_branch_name(const char *str, int len, struct strbuf *); +extern int get_oid_mb(const char *str, struct object_id *oid); -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); @@ -1105,18 +1264,31 @@ 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_ISO8601, + DATE_ISO8601_STRICT, + DATE_RFC2822, + DATE_STRFTIME, + DATE_RAW, + DATE_UNIX + } type; + const char *strftime_fmt; + int local; }; -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); @@ -1126,7 +1298,7 @@ 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 @@ -1141,6 +1313,7 @@ extern const char *ident_default_email(void); extern const char *git_editor(void); extern const char *git_pager(int stdout_is_tty); extern int git_ident_config(const char *, const char *, void *); +extern void reset_ident_date(void); struct ident_split { const char *name_begin; @@ -1163,7 +1336,8 @@ 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 @@ -1183,6 +1357,7 @@ struct checkout { not_new:1, refresh_cache:1; }; +#define CHECKOUT_INIT { NULL, "" } #define TEMPORARY_FILENAME_LENGTH 25 extern int checkout_entry(struct cache_entry *ce, const struct checkout *state, char *topath); @@ -1213,6 +1388,7 @@ extern struct alternate_object_database { } *alt_odb_list; extern void prepare_alt_odb(void); extern void read_info_alternates(const char * relative_base, int depth); +extern char *compute_alternate_path(const char *path, struct strbuf *err); extern void add_to_alternates_file(const char *reference); typedef int alt_odb_fn(struct alternate_object_database *, void *); extern int foreach_alt_odb(alt_odb_fn, void*); @@ -1243,10 +1419,18 @@ extern struct packed_git { freshened:1, do_not_close:1; unsigned char sha1[20]; + struct revindex_entry *revindex; /* something like ".git/objects/pack/xxxxx.pack" */ char pack_name[FLEX_ARRAY]; /* more */ } *packed_git; +/* + * A most-recently-used ordered version of the packed_git list, which can + * be iterated instead of packed_git (and marked via mru_mark). + */ +struct mru; +extern struct mru *packed_git_mru; + struct pack_entry { off_t offset; unsigned char sha1[20]; @@ -1255,8 +1439,11 @@ struct pack_entry { extern struct packed_git *parse_pack_index(unsigned char *sha1, const char *idx_path); -/* A hook for count-objects to report invalid files in pack directory */ -extern void (*report_garbage)(const char *desc, const char *path); +/* A hook to report invalid files in pack directory */ +#define PACKDIR_FILE_PACK 1 +#define PACKDIR_FILE_IDX 2 +#define PACKDIR_FILE_GARBAGE 4 +extern void (*report_garbage)(unsigned seen_bits, const char *path); extern void prepare_packed_git(void); extern void reprepare_packed_git(void); @@ -1281,10 +1468,20 @@ 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 close_all_packs(void); 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 struct packed_git *add_packed_git(const char *path, size_t path_len, int local); + +/* + * Make sure that a pointer access into an mmap'd index file is within bounds, + * and can provide at least 8 bytes of data. + * + * Note that this is only necessary for variable-length segments of the file + * (like the 64-bit extended offset table), as we compare the size to the + * fixed-length parts when we open the file. + */ +extern void check_pack_index_ptr(const struct packed_git *p, const void *ptr); /* * Return the SHA-1 of the nth object within the specified packfile. @@ -1371,7 +1568,7 @@ struct object_info { /* Request */ enum object_type *typep; unsigned long *sizep; - unsigned long *disk_sizep; + off_t *disk_sizep; unsigned char *delta_base_sha1; struct strbuf *typename; @@ -1406,7 +1603,7 @@ extern int update_server_info(int); /* 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: */ +/* git_config_set_gently(), git_config_set_multivar_gently() return the above or these: */ #define CONFIG_NO_LOCK -1 #define CONFIG_INVALID_FILE 3 #define CONFIG_NO_WRITE 4 @@ -1422,19 +1619,27 @@ struct git_config_source { const char *blob; }; +enum config_origin_type { + CONFIG_ORIGIN_BLOB, + CONFIG_ORIGIN_FILE, + CONFIG_ORIGIN_STDIN, + CONFIG_ORIGIN_SUBMODULE_BLOB, + CONFIG_ORIGIN_CMDLINE +}; + 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 int git_config_from_buf(config_fn_t fn, const char *name, - const char *buf, size_t len, void *data); +extern int git_config_from_mem(config_fn_t fn, const enum config_origin_type, + const char *name, const char *buf, size_t len, void *data); extern void git_config_push_parameter(const char *text); extern int git_config_from_parameters(config_fn_t fn, void *data); extern void git_config(config_fn_t fn, void *); extern int git_config_with_options(config_fn_t fn, void *, struct git_config_source *config_source, int respect_includes); -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_parse_maybe_bool(const char *); extern int git_config_int(const char *, const char *); extern int64_t git_config_int64(const char *, const char *); extern unsigned long git_config_ulong(const char *, const char *); @@ -1443,16 +1648,19 @@ 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_in_file(const char *, const char *, const char *); -extern int git_config_set(const char *, const char *); +extern int git_config_set_in_file_gently(const char *, const char *, const char *); +extern void git_config_set_in_file(const char *, const char *, const char *); +extern int git_config_set_gently(const char *, const char *); +extern void git_config_set(const char *, const char *); extern int git_config_parse_key(const char *, char **, int *); extern int git_config_key_is_valid(const char *key); -extern int git_config_set_multivar(const char *, const char *, const char *, int); -extern int git_config_set_multivar_in_file(const char *, const char *, const char *, const char *, int); +extern int git_config_set_multivar_gently(const char *, const char *, const char *, int); +extern void git_config_set_multivar(const char *, const char *, const char *, int); +extern int git_config_set_multivar_in_file_gently(const char *, const char *, const char *, const char *, int); +extern void git_config_set_multivar_in_file(const char *, const char *, const char *, const char *, int); extern int git_config_rename_section(const char *, const char *); extern int git_config_rename_section_in_file(const char *, 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 unsigned long git_env_ulong(const char *, unsigned long); extern int git_config_system(void); @@ -1465,6 +1673,18 @@ extern const char *get_commit_output_encoding(void); extern int git_config_parse_parameter(const char *, config_fn_t fn, void *data); +enum config_scope { + CONFIG_SCOPE_UNKNOWN = 0, + CONFIG_SCOPE_SYSTEM, + CONFIG_SCOPE_GLOBAL, + CONFIG_SCOPE_REPO, + CONFIG_SCOPE_CMDLINE, +}; + +extern enum config_scope current_config_scope(void); +extern const char *current_config_origin_type(void); +extern const char *current_config_name(void); + struct config_include_data { int depth; config_fn_t fn; @@ -1542,10 +1762,20 @@ extern int git_config_get_bool(const char *key, int *dest); extern int git_config_get_bool_or_int(const char *key, int *is_bool, int *dest); extern int git_config_get_maybe_bool(const char *key, int *dest); extern int git_config_get_pathname(const char *key, const char **dest); +extern int git_config_get_untracked_cache(void); + +/* + * This is a hack for test programs like test-dump-untracked-cache to + * ensure that they do not modify the untracked cache when reading it. + * Do not use it otherwise! + */ +extern int ignore_untracked_cache_config; struct key_value_info { const char *filename; int linenr; + enum config_origin_type origin_type; + enum config_scope scope; }; extern NORETURN void git_die_config(const char *key, const char *err, ...) __attribute__((format(printf, 2, 3))); @@ -1571,8 +1801,6 @@ 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 *); extern ssize_t read_in_full(int fd, void *buf, size_t count); @@ -1583,17 +1811,31 @@ 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, ...); + +/** + * Open (and truncate) the file at path, write the contents of buf to it, + * and close it. Dies if any errors are encountered. + */ +extern void write_file_buf(const char *path, const char *buf, size_t len); + +/** + * Like write_file_buf(), but format the contents into a buffer first. + * Additionally, write_file() will append a newline if one is not already + * present, making it convenient to write text files: + * + * write_file(path, "counter: %d", ctr); + */ +__attribute__((format (printf, 2, 3))) +extern void write_file(const char *path, const char *fmt, ...); /* pager.c */ extern void setup_pager(void); -extern const char *pager_program; extern int pager_in_use(void); extern int pager_use_color; extern int term_columns(void); extern int decimal_width(uintmax_t); extern int check_pager_config(const char *cmd); +extern void prepare_pager_args(struct child_process *, const char *pager); extern const char *editor_program; extern const char *askpass_program; @@ -1626,8 +1868,8 @@ int add_files_to_cache(const char *prefix, const struct pathspec *pathspec, int 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 *); +void shift_tree(const struct object_id *, const struct object_id *, struct object_id *, int); +void shift_tree_by(const struct object_id *, const struct object_id *, struct object_id *, const char *); /* * whitespace rules. @@ -1661,7 +1903,7 @@ 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 */ +/* setup.c */ struct startup_info { int have_repository; const char *prefix; @@ -1710,4 +1952,12 @@ void stat_validity_update(struct stat_validity *sv, int fd); int versioncmp(const char *s1, const char *s2); void sleep_millisec(int millisec); +/* + * Create a directory and (if share is nonzero) adjust its permissions + * according to the shared_repository setting. Only use this for + * directories under $GIT_DIR. Don't use it for working tree + * directories. + */ +void safe_create_dir(const char *dir, int share); + #endif /* CACHE_H */ |