diff options
Diffstat (limited to 'cache.h')
| -rw-r--r-- | cache.h | 574 |
1 files changed, 398 insertions, 176 deletions
@@ -3,10 +3,12 @@ #include "git-compat-util.h" #include "strbuf.h" -#include "hash.h" +#include "hashmap.h" #include "advice.h" #include "gettext.h" #include "convert.h" +#include "trace.h" +#include "string-list.h" #include SHA1_HEADER #ifndef git_SHA_CTX @@ -75,6 +77,21 @@ unsigned long git_deflate_bound(git_zstream *, unsigned long); #define S_ISGITLINK(m) (((m) & S_IFMT) == S_IFGITLINK) /* + * Some mode bits are also used internally for computations. + * + * They *must* not overlap with any valid modes, and they *must* not be emitted + * to outside world - i.e. appear on disk or network. In other words, it's just + * temporary fields, which we internally use, but they have to stay in-house. + * + * ( such approach is valid, as standard S_IF* fits into 16 bits, and in Git + * codebase mode is `unsigned int` which is assumed to be at least 32 bits ) + */ + +/* used internally in tree-diff */ +#define S_DIFFTREE_IFXMIN_NEQ 0x80000000 + + +/* * Intensive research over the course of many years has shown that * port 9418 is totally unused by anything else. Or * @@ -101,9 +118,9 @@ unsigned long git_deflate_bound(git_zstream *, unsigned long); #define CACHE_SIGNATURE 0x44495243 /* "DIRC" */ struct cache_header { - unsigned int hdr_signature; - unsigned int hdr_version; - unsigned int hdr_entries; + uint32_t hdr_signature; + uint32_t hdr_version; + uint32_t hdr_entries; }; #define INDEX_FORMAT_LB 2 @@ -115,8 +132,8 @@ struct cache_header { * check it for equality in the 32 bits we save. */ struct cache_time { - unsigned int sec; - unsigned int nsec; + uint32_t sec; + uint32_t nsec; }; struct stat_data { @@ -130,12 +147,13 @@ struct stat_data { }; struct cache_entry { + struct hashmap_entry ent; struct stat_data ce_stat_data; unsigned int ce_mode; unsigned int ce_flags; unsigned int ce_namelen; + unsigned int index; /* for link extension */ unsigned char sha1[20]; - struct cache_entry *next; char name[FLEX_ARRAY]; /* more */ }; @@ -145,7 +163,7 @@ struct cache_entry { #define CE_STAGESHIFT 12 /* - * Range 0xFFFF0000 in ce_flags is divided into + * Range 0xFFFF0FFF 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 @@ -159,7 +177,6 @@ struct cache_entry { #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) @@ -169,6 +186,9 @@ struct cache_entry { /* used to temporarily mark paths matched by pathspecs */ #define CE_MATCHED (1 << 26) +#define CE_UPDATE_IN_BASE (1 << 27) +#define CE_STRIP_NAME (1 << 28) + /* * Extended on-disk flags */ @@ -189,21 +209,24 @@ struct cache_entry { #error "CE_EXTENDED_FLAGS out of range" #endif +struct pathspec; + /* * 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, const struct cache_entry *src) { - unsigned int state = dst->ce_flags & CE_STATE_MASK; + unsigned int state = dst->ce_flags & CE_HASHED; /* Don't copy hash chain and name */ - memcpy(dst, src, offsetof(struct cache_entry, next)); + memcpy(&dst->ce_stat_data, &src->ce_stat_data, + offsetof(struct cache_entry, name) - + offsetof(struct cache_entry, ce_stat_data)); /* Restore the hash state */ - dst->ce_flags = (dst->ce_flags & ~CE_STATE_MASK) | state; + dst->ce_flags = (dst->ce_flags & ~CE_HASHED) | state; } static inline unsigned create_ce_flags(unsigned stage) @@ -266,17 +289,28 @@ static inline unsigned int canon_mode(unsigned int mode) #define cache_entry_size(len) (offsetof(struct cache_entry,name) + (len) + 1) +#define SOMETHING_CHANGED (1 << 0) /* unclassified changes go here */ +#define CE_ENTRY_CHANGED (1 << 1) +#define CE_ENTRY_REMOVED (1 << 2) +#define CE_ENTRY_ADDED (1 << 3) +#define RESOLVE_UNDO_CHANGED (1 << 4) +#define CACHE_TREE_CHANGED (1 << 5) +#define SPLIT_INDEX_ORDERED (1 << 6) + +struct split_index; struct index_state { struct cache_entry **cache; unsigned int version; unsigned int cache_nr, cache_alloc, cache_changed; struct string_list *resolve_undo; struct cache_tree *cache_tree; + struct split_index *split_index; struct cache_time timestamp; unsigned name_hash_initialized : 1, initialized : 1; - struct hash_table name_hash; - struct hash_table dir_hash; + struct hashmap name_hash; + struct hashmap dir_hash; + unsigned char sha1[20]; }; extern struct index_state the_index; @@ -299,7 +333,6 @@ extern void free_name_hash(struct index_state *istate); #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)) @@ -312,7 +345,8 @@ extern void free_name_hash(struct index_state *istate); #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_dir_exists(name, namelen) index_dir_exists(&the_index, (name), (namelen)) +#define cache_file_exists(name, namelen, igncase) index_file_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) @@ -350,6 +384,7 @@ static inline enum object_type object_type(unsigned int mode) #define DB_ENVIRONMENT "GIT_OBJECT_DIRECTORY" #define INDEX_ENVIRONMENT "GIT_INDEX_FILE" #define GRAFT_ENVIRONMENT "GIT_GRAFT_FILE" +#define GIT_SHALLOW_FILE_ENVIRONMENT "GIT_SHALLOW_FILE" #define TEMPLATE_DIR_ENVIRONMENT "GIT_TEMPLATE_DIR" #define CONFIG_ENVIRONMENT "GIT_CONFIG" #define CONFIG_DATA_ENVIRONMENT "GIT_CONFIG_PARAMETERS" @@ -365,6 +400,9 @@ static inline enum object_type object_type(unsigned int mode) #define GIT_NOTES_REWRITE_REF_ENVIRONMENT "GIT_NOTES_REWRITE_REF" #define GIT_NOTES_REWRITE_MODE_ENVIRONMENT "GIT_NOTES_REWRITE_MODE" #define GIT_LITERAL_PATHSPECS_ENVIRONMENT "GIT_LITERAL_PATHSPECS" +#define GIT_GLOB_PATHSPECS_ENVIRONMENT "GIT_GLOB_PATHSPECS" +#define GIT_NOGLOB_PATHSPECS_ENVIRONMENT "GIT_NOGLOB_PATHSPECS" +#define GIT_ICASE_PATHSPECS_ENVIRONMENT "GIT_ICASE_PATHSPECS" /* * This environment variable is expected to contain a boolean indicating @@ -391,7 +429,6 @@ 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 int is_git_directory(const char *path); extern char *get_object_directory(void); @@ -412,6 +449,7 @@ extern void setup_work_tree(void); extern const char *setup_git_directory_gently(int *); extern const char *setup_git_directory(void); extern char *prefix_path(const char *prefix, int len, const char *path); +extern char *prefix_path_gently(const char *prefix, int len, int *remaining, 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, @@ -426,6 +464,7 @@ 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 void sanitize_stdfds(void); +extern int daemonize(void); #define alloc_nr(x) (((x)+16)*3/2) @@ -443,27 +482,34 @@ extern void sanitize_stdfds(void); alloc = (nr); \ else \ alloc = alloc_nr(alloc); \ - x = xrealloc((x), alloc * sizeof(*(x))); \ + REALLOC_ARRAY(x, alloc); \ } \ } while (0) /* Initialize and use the cache information */ +struct lock_file; extern int read_index(struct index_state *); -extern int read_index_preload(struct index_state *, const char **pathspec); +extern int read_index_preload(struct index_state *, const struct pathspec *pathspec); +extern int do_read_index(struct index_state *istate, const char *path, + int must_exist); /* for testting only! */ 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); +#define COMMIT_LOCK (1 << 0) +#define CLOSE_LOCK (1 << 1) +extern int write_locked_index(struct index_state *, struct lock_file *lock, unsigned flags); 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 struct cache_entry *index_dir_exists(struct index_state *istate, const char *name, int namelen); +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 */ #define ADD_CACHE_OK_TO_REPLACE 2 /* Ok to replace file/directory */ #define ADD_CACHE_SKIP_DFCHECK 4 /* Ok to skip DF conflict checks */ #define ADD_CACHE_JUST_APPEND 8 /* Append only; tree.c::read_tree() */ #define ADD_CACHE_NEW_ONLY 16 /* Do not replace existing ones */ +#define ADD_CACHE_KEEP_CACHE_TREE 32 /* Do not invalidate cache-tree */ 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); @@ -474,11 +520,11 @@ extern int remove_file_from_index(struct index_state *, const char *path); #define ADD_CACHE_IGNORE_ERRORS 4 #define ADD_CACHE_IGNORE_REMOVAL 8 #define ADD_CACHE_INTENT 16 -#define ADD_CACHE_IMPLICIT_DOT 32 /* internal to "git add -u/-A" */ 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 struct cache_entry *make_cache_entry(unsigned int mode, const unsigned char *sha1, const char *path, int stage, unsigned int refresh_options); 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); extern void *read_blob_data_from_index(struct index_state *, const char *, unsigned long *); @@ -488,31 +534,13 @@ extern void *read_blob_data_from_index(struct index_state *, const char *, unsig #define CE_MATCH_RACY_IS_DIRTY 02 /* do stat comparison even if CE_SKIP_WORKTREE is true */ #define CE_MATCH_IGNORE_SKIP_WORKTREE 04 +/* ignore non-existent files during stat update */ +#define CE_MATCH_IGNORE_MISSING 0x08 +/* enable stat refresh */ +#define CE_MATCH_REFRESH 0x10 extern int ie_match_stat(const struct index_state *, const struct cache_entry *, struct stat *, unsigned int); extern int ie_modified(const struct index_state *, const struct cache_entry *, struct stat *, unsigned int); -#define PATHSPEC_ONESTAR 1 /* the pathspec pattern satisfies GFNM_ONESTAR */ - -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; - int nowildcard_len; - int flags; - } *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); - -extern int limit_pathspec_to_literal(void); - #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); @@ -540,29 +568,13 @@ extern void fill_stat_cache_info(struct cache_entry *ce, struct stat *st); #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]; -}; -#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 int refresh_index(struct index_state *, unsigned int flags, const struct pathspec *pathspec, char *seen, const char *header_msg); + 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 */ @@ -590,17 +602,30 @@ extern size_t packed_git_limit; extern size_t delta_base_cache_limit; extern unsigned long big_file_threshold; extern unsigned long pack_size_limit_cfg; -extern int read_replace_refs; + +/* + * 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 + * commands that do not want replace references to be active. As an + * optimization it is also set to false if replace references have + * been sought but there were none. + */ +extern int check_replace_refs; + extern int fsync_object_files; extern int core_preload_index; extern int core_apply_sparse_checkout; extern int precomposed_unicode; +extern int protect_hfs; +extern int protect_ntfs; /* * The character that begins a commented line in user-editable file * that is subject to stripspace. */ extern char comment_line_char; +extern int auto_comment_line_char; enum branch_track { BRANCH_TRACK_UNSPECIFIED = -1, @@ -669,9 +694,28 @@ 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); +/* + * 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 + * overwritten each time the function is called. + */ +extern const char *sha1_file_name(const unsigned char *sha1); + +/* + * Return the name of the (local) packfile with the specified sha1 in + * its name. The return value is a pointer to memory that is + * overwritten each time this function is called. + */ extern char *sha1_pack_name(const unsigned char *sha1); + +/* + * Return the name of the (local) pack index file with the specified + * sha1 in its name. The return value is a pointer to memory that is + * overwritten each time this function is called. + */ 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]; @@ -747,8 +791,29 @@ enum sharedrepo { }; int git_config_perm(const char *var, const char *value); int adjust_shared_perm(const char *path); -int safe_create_leading_directories(char *path); -int safe_create_leading_directories_const(const char *path); + +/* + * Create the directory containing the named path, using care to be + * somewhat safe against races. Return one of the scld_error values + * to indicate success/failure. + * + * SCLD_VANISHED indicates that one of the ancestor directories of the + * path existed at one point during the function call and then + * suddenly vanished, probably because another process pruned the + * 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. + */ +enum scld_error { + SCLD_OK = 0, + SCLD_FAILED = -1, + SCLD_PERMS = -2, + SCLD_EXISTS = -3, + SCLD_VANISHED = -4 +}; +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); @@ -761,34 +826,56 @@ int is_directory(const char *); const char *real_path(const char *path); const char *real_path_if_valid(const char *path); const char *absolute_path(const char *path); +const char *remove_leading_path(const char *in, const char *prefix); const char *relative_path(const char *in, const char *prefix, struct strbuf *sb); +int normalize_path_copy_len(char *dst, const char *src, int *prefix_len); int normalize_path_copy(char *dst, const char *src); int longest_ancestor_length(const char *path, struct string_list *prefixes); char *strip_path_suffix(const char *path, const char *suffix); int daemon_avoid_alias(const char *path); -int offset_1st_component(const char *path); +extern int is_ntfs_dotgit(const char *name); /* object replacement */ -#define READ_SHA1_FILE_REPLACE 1 +#define LOOKUP_REPLACE_OBJECT 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); + return read_sha1_file_extended(sha1, type, size, LOOKUP_REPLACE_OBJECT); } + +/* + * This internal function is only declared here for the benefit of + * lookup_replace_object(). Please do not call it directly. + */ extern const unsigned char *do_lookup_replace_object(const unsigned char *sha1); + +/* + * If object sha1 should be replaced, return the replacement object's + * name (replaced recursively, if necessary). The return value is + * either sha1 or a pointer to a permanently-allocated value. When + * object replacement is suppressed, always return sha1. + */ static inline const unsigned char *lookup_replace_object(const unsigned char *sha1) { - if (!read_replace_refs) + if (!check_replace_refs) return sha1; return do_lookup_replace_object(sha1); } +static inline const unsigned char *lookup_replace_object_extended(const unsigned char *sha1, unsigned flag) +{ + if (!(flag & LOOKUP_REPLACE_OBJECT)) + return sha1; + return lookup_replace_object(sha1); +} + /* Read and unpack a sha1 file into memory, write memory to a sha1 file */ 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 int git_open_noatime(const char *name); 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); @@ -801,7 +888,19 @@ extern int check_sha1_signature(const unsigned char *sha1, void *buf, unsigned l extern int move_temp_to_file(const char *tmpfile, const char *filename); 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. + */ extern int has_sha1_file(const unsigned char *sha1); + +/* + * Return true iff an alternate object database has a loose object + * with the specified name. This function does not respect replace + * references. + */ extern int has_loose_object_nonlocal(const unsigned char *sha1); extern int has_pack_index(const unsigned char *sha1); @@ -854,8 +953,8 @@ extern int for_each_abbrev(const char *prefix, each_abbrev_fn, void *); 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_full(const char *refname, unsigned char *sha1, - int reading, int *flags); +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); /* @@ -867,45 +966,68 @@ extern int read_ref(const char *refname, unsigned char *sha1); * or the input ref. * * If the reference cannot be resolved to an object, the behavior - * depends on the "reading" argument: + * depends on the RESOLVE_REF_READING flag: * - * - If reading is set, return NULL. + * - If RESOLVE_REF_READING is set, return NULL. * - * - If 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 + * - 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 flag is non-NULL, set the value that it points to the + * 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) and REF_ISSYMREF (if the initial reference was a - * symbolic reference). + * 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. * - * errno is sometimes set on errors, but not always. + * 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. */ -extern const char *resolve_ref_unsafe(const char *ref, unsigned char *sha1, int reading, int *flag); -extern char *resolve_refdup(const char *ref, unsigned char *sha1, int reading, int *flag); +#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, struct strbuf *); +extern int interpret_branch_name(const char *str, int len, 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[]; -#define ref_fetch_rules ref_rev_parse_rules +/* + * 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); 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 int name_compare(const char *name1, size_t len1, const char *name2, size_t len2); extern int cache_name_stage_compare(const char *name1, int len1, int stage1, const char *name2, int len2, int stage2); extern void *read_object_with_reference(const unsigned char *sha1, @@ -922,6 +1044,7 @@ enum date_mode { DATE_SHORT, DATE_LOCAL, DATE_ISO8601, + DATE_ISO8601_STRICT, DATE_RFC2822, DATE_RAW }; @@ -929,14 +1052,15 @@ enum date_mode { const char *show_date(unsigned long time, int timezone, enum 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, char *buf, int bufsize); +int parse_date(const char *date, struct strbuf *out); int parse_date_basic(const char *date, unsigned long *timestamp, int *offset); int parse_expiry_date(const char *date, unsigned long *timestamp); -void datestamp(char *buf, int bufsize); +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); +int date_overflows(unsigned long date); #define IDENT_STRICT 1 #define IDENT_NO_DATE 2 @@ -945,6 +1069,7 @@ 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 *ident_default_name(void); extern const char *ident_default_email(void); extern const char *git_editor(void); extern const char *git_pager(int stdout_is_tty); @@ -967,6 +1092,13 @@ struct ident_split { extern int split_ident_line(struct ident_split *, const char *, int); /* + * Like show_date, but pull the timestamp and tz parameters from + * 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); + +/* * Compare split idents for equality or strict ordering. Note that we * compare only the ident part of the line, ignoring any timestamp. * @@ -976,6 +1108,7 @@ extern int split_ident_line(struct ident_split *, const char *, int); extern int ident_cmp(const struct ident_split *, const struct ident_split *); struct checkout { + struct index_state *istate; const char *base_dir; int base_dir_len; unsigned force:1, @@ -984,15 +1117,20 @@ struct checkout { refresh_cache:1; }; +#define TEMPORARY_FILENAME_LENGTH 25 extern int checkout_entry(struct cache_entry *ce, const struct checkout *state, char *topath); struct cache_def { - char path[PATH_MAX + 1]; - int len; + struct strbuf path; int flags; int track_flags; int prefix_len_stat_func; }; +#define CACHE_DEF_INIT { STRBUF_INIT, 0, 0, 0 } +static inline void cache_def_clear(struct cache_def *cache) +{ + strbuf_release(&cache->path); +} extern int has_symlink_leading_path(const char *name, int len); extern int threaded_has_symlink_leading_path(struct cache_def *, const char *, int); @@ -1010,7 +1148,7 @@ extern void prepare_alt_odb(void); extern void read_info_alternates(const char * relative_base, int depth); 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*); +extern int foreach_alt_odb(alt_odb_fn, void*); struct pack_window { struct pack_window *next; @@ -1047,67 +1185,6 @@ struct pack_entry { struct packed_git *p; }; -struct ref { - struct ref *next; - unsigned char old_sha1[20]; - unsigned char new_sha1[20]; - char *symref; - unsigned int - force:1, - forced_update:1, - deletion:1, - matched:1; - - /* - * Order is important here, as we write to FETCH_HEAD - * in numeric order. And the default NOT_FOR_MERGE - * should be 0, so that xcalloc'd structures get it - * by default. - */ - enum { - FETCH_HEAD_MERGE = -1, - FETCH_HEAD_NOT_FOR_MERGE = 0, - FETCH_HEAD_IGNORE = 1 - } fetch_head_status; - - enum { - REF_STATUS_NONE = 0, - REF_STATUS_OK, - REF_STATUS_REJECT_NONFASTFORWARD, - REF_STATUS_REJECT_ALREADY_EXISTS, - REF_STATUS_REJECT_NODELETE, - REF_STATUS_REJECT_FETCH_FIRST, - REF_STATUS_REJECT_NEEDS_FORCE, - 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 */ -}; - -#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 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); -struct extra_have_objects { - int nr, alloc; - unsigned char (*array)[20]; -}; -extern struct ref **get_remote_heads(int in, char *src_buf, size_t src_len, - struct ref **list, unsigned int flags, - struct extra_have_objects *); -extern int server_supports(const char *feature); -extern int parse_feature_request(const char *features, const char *feature); -extern const char *server_feature_value(const char *feature, int *len_ret); - 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 */ @@ -1121,28 +1198,102 @@ extern struct packed_git *find_sha1_pack(const unsigned char *sha1, struct packed_git *packs); extern void pack_report(void); + +/* + * mmap the index file for the specified packfile (if it is not + * already mmapped). Return 0 on success. + */ extern int open_pack_index(struct packed_git *); + +/* + * munmap the index file for the specified packfile (if it is + * currently mmapped). + */ 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 *); + +/* + * Return the SHA-1 of the nth object within the specified packfile. + * Open the index if it is not already open. The return value points + * at the SHA-1 within the mmapped index. Return NULL if there is an + * error. + */ +extern const unsigned char *nth_packed_object_sha1(struct packed_git *, uint32_t n); + +/* + * Return the offset of the nth object within the specified packfile. + * The index must already be opened. + */ +extern off_t nth_packed_object_offset(const struct packed_git *, uint32_t n); + +/* + * If the object named sha1 is present in the specified packfile, + * return its offset within the packfile; otherwise, return 0. + */ +extern off_t find_pack_entry_one(const unsigned char *sha1, struct packed_git *); + extern int is_pack_valid(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 *); +/* + * Iterate over the files in the loose-object parts of the object + * directory "path", triggering the following callbacks: + * + * - loose_object is called for each loose object we find. + * + * - loose_cruft is called for any files that do not appear to be + * loose objects. Note that we only look in the loose object + * directories "objects/[0-9a-f]{2}/", so we will not report + * "objects/foobar" as cruft. + * + * - loose_subdir is called for each top-level hashed subdirectory + * of the object directory (e.g., "$OBJDIR/f0"). It is called + * after the objects in the directory are processed. + * + * Any callback that is NULL will be ignored. Callbacks returning non-zero + * will end the iteration. + */ +typedef int each_loose_object_fn(const unsigned char *sha1, + const char *path, + void *data); +typedef int each_loose_cruft_fn(const char *basename, + const char *path, + void *data); +typedef int each_loose_subdir_fn(int nr, + const char *path, + void *data); +int for_each_loose_file_in_objdir(const char *path, + each_loose_object_fn obj_cb, + each_loose_cruft_fn cruft_cb, + each_loose_subdir_fn subdir_cb, + void *data); + +/* + * Iterate over loose and packed objects in both the local + * repository and any alternates repositories. + */ +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 *); + struct object_info { /* Request */ enum object_type *typep; unsigned long *sizep; unsigned long *disk_sizep; + unsigned char *delta_base_sha1; /* Response */ enum { @@ -1167,7 +1318,7 @@ struct object_info { } packed; } u; }; -extern int sha1_object_info_extended(const unsigned char *, struct object_info *); +extern int sha1_object_info_extended(const unsigned char *, struct object_info *, unsigned flags); /* Dumb servers support */ extern int update_server_info(int); @@ -1183,6 +1334,14 @@ extern int update_server_info(int); #define CONFIG_INVALID_PATTERN 6 #define CONFIG_GENERIC_ERROR 7 +#define CONFIG_REGEX_NONE ((void *)1) + +struct git_config_source { + unsigned int use_stdin:1; + const char *file; + const char *blob; +}; + 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 *); @@ -1190,14 +1349,14 @@ extern int git_config_from_buf(config_fn_t fn, 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 int git_config(config_fn_t fn, void *); +extern void git_config(config_fn_t fn, void *); extern int git_config_with_options(config_fn_t fn, void *, - const char *filename, - const char *blob_ref, + 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_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 *); extern int git_config_bool_or_int(const char *, const char *, int *); extern int git_config_bool(const char *, const char *); @@ -1214,10 +1373,11 @@ extern int git_config_rename_section_in_file(const char *, const char *, const c 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); extern int config_error_nonbool(const char *); -#if defined(__GNUC__) && ! defined(__clang__) -#define config_error_nonbool(s) (config_error_nonbool(s), -1) +#if defined(__GNUC__) +#define config_error_nonbool(s) (config_error_nonbool(s), const_error()) #endif extern const char *get_log_output_encoding(void); extern const char *get_commit_output_encoding(void); @@ -1247,6 +1407,69 @@ extern int parse_config_key(const char *var, const char **subsection, int *subsection_len, const char **key); +struct config_set_element { + struct hashmap_entry ent; + char *key; + struct string_list value_list; +}; + +struct configset_list_item { + struct config_set_element *e; + int value_index; +}; + +/* + * the contents of the list are ordered according to their + * position in the config files and order of parsing the files. + * (i.e. key-value pair at the last position of .git/config will + * be at the last item of the list) + */ +struct configset_list { + struct configset_list_item *items; + unsigned int nr, alloc; +}; + +struct config_set { + struct hashmap config_hash; + int hash_initialized; + struct configset_list list; +}; + +extern void git_configset_init(struct config_set *cs); +extern int git_configset_add_file(struct config_set *cs, const char *filename); +extern int git_configset_get_value(struct config_set *cs, const char *key, const char **value); +extern const struct string_list *git_configset_get_value_multi(struct config_set *cs, const char *key); +extern void git_configset_clear(struct config_set *cs); +extern int git_configset_get_string_const(struct config_set *cs, const char *key, const char **dest); +extern int git_configset_get_string(struct config_set *cs, const char *key, char **dest); +extern int git_configset_get_int(struct config_set *cs, const char *key, int *dest); +extern int git_configset_get_ulong(struct config_set *cs, const char *key, unsigned long *dest); +extern int git_configset_get_bool(struct config_set *cs, const char *key, int *dest); +extern int git_configset_get_bool_or_int(struct config_set *cs, const char *key, int *is_bool, int *dest); +extern int git_configset_get_maybe_bool(struct config_set *cs, const char *key, int *dest); +extern int git_configset_get_pathname(struct config_set *cs, const char *key, const char **dest); + +extern int git_config_get_value(const char *key, const char **value); +extern const struct string_list *git_config_get_value_multi(const char *key); +extern void git_config_clear(void); +extern void git_config_iter(config_fn_t fn, void *data); +extern int git_config_get_string_const(const char *key, const char **dest); +extern int git_config_get_string(const char *key, char **dest); +extern int git_config_get_int(const char *key, int *dest); +extern int git_config_get_ulong(const char *key, unsigned long *dest); +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); + +struct key_value_info { + const char *filename; + int linenr; +}; + +extern NORETURN void git_die_config(const char *key, const char *err, ...) __attribute__((format(printf, 2, 3))); +extern NORETURN void git_die_config_linenr(const char *key, const char *filename, int linenr); + extern int committer_ident_sufficiently_given(void); extern int author_ident_sufficiently_given(void); @@ -1257,6 +1480,8 @@ extern const char *git_mailmap_blob; /* IO helper functions */ extern void maybe_flush_or_die(FILE *, const char *); +__attribute__((format (printf, 2, 3))) +extern void fprintf_or_die(FILE *, const char *fmt, ...); 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); @@ -1267,6 +1492,8 @@ extern void fsync_or_die(int fd, const char *); 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); +extern ssize_t pread_in_full(int fd, void *buf, size_t count, off_t offset); + static inline ssize_t write_str_in_full(int fd, const char *str) { return write_in_full(fd, str, strlen(str)); @@ -1296,16 +1523,9 @@ extern void *alloc_commit_node(void); extern void *alloc_tag_node(void); extern void *alloc_object_node(void); extern void alloc_report(void); +extern unsigned int alloc_commit_index(void); -/* trace.c */ -__attribute__((format (printf, 1, 2))) -extern void trace_printf(const char *format, ...); -__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); - +/* pkt-line.c */ void packet_trace_identity(const char *prog); /* add */ @@ -1313,7 +1533,7 @@ void packet_trace_identity(const char *prog); * 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); +int add_files_to_cache(const char *prefix, const struct pathspec *pathspec, int flags); /* diff.c */ extern int diff_auto_refresh_index; @@ -1347,7 +1567,7 @@ 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); +int report_path_error(const char *ps_matched, const struct pathspec *pathspec, const char *prefix); void overlay_tree_on_cache(const char *tree_name, const char *prefix); char *alias_lookup(const char *alias); @@ -1401,4 +1621,6 @@ 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); + #endif /* CACHE_H */ |