From: Junio C Hamano Date: Fri, 1 Nov 2013 14:38:58 +0000 (-0700) Subject: Merge branch 'sb/refs-code-cleanup' X-Git-Tag: v1.8.5-rc1~12 X-Git-Url: https://git.lorimer.id.au/gitweb.git/diff_plain/e0fd1e3841ebe24aa1d1a6c1ebbb1673f1201927?ds=inline;hp=-c Merge branch 'sb/refs-code-cleanup' * sb/refs-code-cleanup: cache: remove unused function 'have_git_dir' refs: remove unused function invalidate_ref_cache --- e0fd1e3841ebe24aa1d1a6c1ebbb1673f1201927 diff --combined cache.h index 9aa46e70c3,9cda46e07b..ce377e1354 --- a/cache.h +++ b/cache.h @@@ -101,9 -101,9 +101,9 @@@ unsigned long git_deflate_bound(git_zst #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 -115,8 +115,8 @@@ * 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 { @@@ -189,8 -189,6 +189,8 @@@ 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! @@@ -314,8 -312,6 +314,8 @@@ extern void free_name_hash(struct index #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_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_exists(name, namelen, igncase) index_name_exists(&the_index, (name), (namelen), (igncase)) #define cache_name_is_other(name, namelen) index_name_is_other(&the_index, (name), (namelen)) #define resolve_undo_clear() resolve_undo_clear_index(&the_index) @@@ -369,9 -365,6 +369,9 @@@ static inline enum object_type object_t #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 @@@ -398,7 -391,6 +398,6 @@@ 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); @@@ -419,7 -411,6 +418,7 @@@ 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, @@@ -457,7 -448,7 +456,7 @@@ extern void sanitize_stdfds(void) /* Initialize and use the cache information */ 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 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 *); @@@ -465,8 -456,6 +464,8 @@@ extern int write_index(struct index_sta 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 struct cache_entry *index_file_exists(struct index_state *istate, const char *name, int namelen, int igncase); extern struct cache_entry *index_name_exists(struct index_state *istate, const char *name, int namelen, int igncase); extern int index_name_pos(const struct index_state *, const char *name, int namelen); #define ADD_CACHE_OK_TO_ADD 1 /* Ok to add */ @@@ -501,8 -490,28 +500,8 @@@ extern void *read_blob_data_from_index( 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); @@@ -530,7 -539,7 +529,7 @@@ extern void fill_stat_cache_info(struc #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); +extern int refresh_index(struct index_state *, unsigned int flags, const struct pathspec *pathspec, char *seen, const char *header_msg); struct lock_file { struct lock_file *next; @@@ -751,9 -760,7 +750,9 @@@ 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); @@@ -885,7 -892,7 +884,7 @@@ extern char *resolve_refdup(const char 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); @@@ -958,15 -965,6 +957,15 @@@ struct ident_split */ extern int split_ident_line(struct ident_split *, const char *, int); +/* + * Compare split idents for equality or strict ordering. Note that we + * compare only the ident part of the line, ignoring any timestamp. + * + * Because there are two fields, we must choose one as the primary key; we + * currently arbitrarily pick the email. + */ +extern int ident_cmp(const struct ident_split *, const struct ident_split *); + struct checkout { const char *base_dir; int base_dir_len; @@@ -976,7 -974,6 +975,7 @@@ 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 { @@@ -1040,6 -1037,68 +1039,6 @@@ 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 const char *parse_feature_value(const char *feature_list, 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 */ @@@ -1130,7 -1189,6 +1129,7 @@@ extern int git_config_with_options(conf 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 *); @@@ -1246,7 -1304,7 +1245,7 @@@ void packet_trace_identity(const char * * 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; @@@ -1280,7 -1338,7 +1279,7 @@@ extern int ws_blank_line(const char *li #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); diff --combined refs.c index 0c0e963532,d20834054b..5e5a3824b9 --- a/refs.c +++ b/refs.c @@@ -72,10 -72,6 +72,10 @@@ int check_refname_format(const char *re { int component_len, component_count = 0; + if (!strcmp(refname, "@")) + /* Refname is a single character '@'. */ + return -1; + while (1) { /* We are at the start of a path component. */ component_len = check_refname_component(refname, flags); @@@ -947,13 -943,6 +947,6 @@@ static struct ref_cache *get_ref_cache( return refs; } - void invalidate_ref_cache(const char *submodule) - { - struct ref_cache *refs = get_ref_cache(submodule); - clear_packed_ref_cache(refs); - clear_loose_ref_cache(refs); - } - /* The length of a peeled reference line in packed-refs, including EOL: */ #define PEELED_LINE_LENGTH 42 @@@ -1955,7 -1944,7 +1948,7 @@@ static int remove_empty_directories(con static char *substitute_branch_name(const char **string, int *len) { struct strbuf buf = STRBUF_INIT; - int ret = interpret_branch_name(*string, &buf); + int ret = interpret_branch_name(*string, *len, &buf); if (ret == *len) { size_t size; @@@ -2125,12 -2114,11 +2118,12 @@@ struct ref_lock *lock_ref_sha1(const ch } struct ref_lock *lock_any_ref_for_update(const char *refname, - const unsigned char *old_sha1, int flags) + const unsigned char *old_sha1, + int flags, int *type_p) { if (check_refname_format(refname, REFNAME_ALLOW_ONELEVEL)) return NULL; - return lock_ref_sha1_basic(refname, old_sha1, flags, NULL); + return lock_ref_sha1_basic(refname, old_sha1, flags, type_p); } /* @@@ -2418,82 -2406,60 +2411,82 @@@ static int curate_packed_ref_fn(struct return 0; } -static int repack_without_ref(const char *refname) +static int repack_without_refs(const char **refnames, int n) { struct ref_dir *packed; struct string_list refs_to_delete = STRING_LIST_INIT_DUP; struct string_list_item *ref_to_delete; + int i, removed = 0; + + /* Look for a packed ref */ + for (i = 0; i < n; i++) + if (get_packed_ref(refnames[i])) + break; - if (!get_packed_ref(refname)) - return 0; /* refname does not exist in packed refs */ + /* Avoid locking if we have nothing to do */ + if (i == n) + return 0; /* no refname exists in packed refs */ if (lock_packed_refs(0)) { unable_to_lock_error(git_path("packed-refs"), errno); - return error("cannot delete '%s' from packed refs", refname); + return error("cannot delete '%s' from packed refs", refnames[i]); } packed = get_packed_refs(&ref_cache); - /* Remove refname from the cache: */ - if (remove_entry(packed, refname) == -1) { + /* Remove refnames from the cache */ + for (i = 0; i < n; i++) + if (remove_entry(packed, refnames[i]) != -1) + removed = 1; + if (!removed) { /* - * The packed entry disappeared while we were + * All packed entries disappeared while we were * acquiring the lock. */ rollback_packed_refs(); return 0; } - /* Remove any other accumulated cruft: */ + /* Remove any other accumulated cruft */ do_for_each_entry_in_dir(packed, 0, curate_packed_ref_fn, &refs_to_delete); for_each_string_list_item(ref_to_delete, &refs_to_delete) { if (remove_entry(packed, ref_to_delete->string) == -1) die("internal error"); } - /* Write what remains: */ + /* Write what remains */ return commit_packed_refs(); } -int delete_ref(const char *refname, const unsigned char *sha1, int delopt) +static int repack_without_ref(const char *refname) { - struct ref_lock *lock; - int err, i = 0, ret = 0, flag = 0; + return repack_without_refs(&refname, 1); +} - lock = lock_ref_sha1_basic(refname, sha1, delopt, &flag); - if (!lock) - return 1; +static int delete_ref_loose(struct ref_lock *lock, int flag) +{ if (!(flag & REF_ISPACKED) || flag & REF_ISSYMREF) { /* loose */ - i = strlen(lock->lk->filename) - 5; /* .lock */ + int err, i = strlen(lock->lk->filename) - 5; /* .lock */ + lock->lk->filename[i] = 0; err = unlink_or_warn(lock->lk->filename); - if (err && errno != ENOENT) - ret = 1; - lock->lk->filename[i] = '.'; + if (err && errno != ENOENT) + return 1; } + return 0; +} + +int delete_ref(const char *refname, const unsigned char *sha1, int delopt) +{ + struct ref_lock *lock; + int ret = 0, flag = 0; + + lock = lock_ref_sha1_basic(refname, sha1, delopt, &flag); + if (!lock) + return 1; + ret |= delete_ref_loose(lock, flag); + /* removing the loose one could have resurrected an earlier * packed one. Also, if it was not loose we need to repack * without it. @@@ -3196,13 -3162,12 +3189,13 @@@ int for_each_reflog(each_ref_fn fn, voi return retval; } -int update_ref(const char *action, const char *refname, - const unsigned char *sha1, const unsigned char *oldval, - int flags, enum action_on_err onerr) +static struct ref_lock *update_ref_lock(const char *refname, + const unsigned char *oldval, + int flags, int *type_p, + enum action_on_err onerr) { - static struct ref_lock *lock; - lock = lock_any_ref_for_update(refname, oldval, flags); + struct ref_lock *lock; + lock = lock_any_ref_for_update(refname, oldval, flags, type_p); if (!lock) { const char *str = "Cannot lock the ref '%s'."; switch (onerr) { @@@ -3210,14 -3175,8 +3203,14 @@@ case DIE_ON_ERR: die(str, refname); break; case QUIET_ON_ERR: break; } - return 1; } + return lock; +} + +static int update_ref_write(const char *action, const char *refname, + const unsigned char *sha1, struct ref_lock *lock, + enum action_on_err onerr) +{ if (write_ref_sha1(lock, sha1, action) < 0) { const char *str = "Cannot update the ref '%s'."; switch (onerr) { @@@ -3230,115 -3189,12 +3223,115 @@@ return 0; } -struct ref *find_ref_by_name(const struct ref *list, const char *name) +int update_ref(const char *action, const char *refname, + const unsigned char *sha1, const unsigned char *oldval, + int flags, enum action_on_err onerr) { - for ( ; list; list = list->next) - if (!strcmp(list->name, name)) - return (struct ref *)list; - return NULL; + struct ref_lock *lock; + lock = update_ref_lock(refname, oldval, flags, NULL, onerr); + if (!lock) + return 1; + return update_ref_write(action, refname, sha1, lock, onerr); +} + +static int ref_update_compare(const void *r1, const void *r2) +{ + const struct ref_update * const *u1 = r1; + const struct ref_update * const *u2 = r2; + return strcmp((*u1)->ref_name, (*u2)->ref_name); +} + +static int ref_update_reject_duplicates(struct ref_update **updates, int n, + enum action_on_err onerr) +{ + int i; + for (i = 1; i < n; i++) + if (!strcmp(updates[i - 1]->ref_name, updates[i]->ref_name)) { + const char *str = + "Multiple updates for ref '%s' not allowed."; + switch (onerr) { + case MSG_ON_ERR: + error(str, updates[i]->ref_name); break; + case DIE_ON_ERR: + die(str, updates[i]->ref_name); break; + case QUIET_ON_ERR: + break; + } + return 1; + } + return 0; +} + +int update_refs(const char *action, const struct ref_update **updates_orig, + int n, enum action_on_err onerr) +{ + int ret = 0, delnum = 0, i; + struct ref_update **updates; + int *types; + struct ref_lock **locks; + const char **delnames; + + if (!updates_orig || !n) + return 0; + + /* Allocate work space */ + updates = xmalloc(sizeof(*updates) * n); + types = xmalloc(sizeof(*types) * n); + locks = xcalloc(n, sizeof(*locks)); + delnames = xmalloc(sizeof(*delnames) * n); + + /* Copy, sort, and reject duplicate refs */ + memcpy(updates, updates_orig, sizeof(*updates) * n); + qsort(updates, n, sizeof(*updates), ref_update_compare); + ret = ref_update_reject_duplicates(updates, n, onerr); + if (ret) + goto cleanup; + + /* Acquire all locks while verifying old values */ + for (i = 0; i < n; i++) { + locks[i] = update_ref_lock(updates[i]->ref_name, + (updates[i]->have_old ? + updates[i]->old_sha1 : NULL), + updates[i]->flags, + &types[i], onerr); + if (!locks[i]) { + ret = 1; + goto cleanup; + } + } + + /* Perform updates first so live commits remain referenced */ + for (i = 0; i < n; i++) + if (!is_null_sha1(updates[i]->new_sha1)) { + ret = update_ref_write(action, + updates[i]->ref_name, + updates[i]->new_sha1, + locks[i], onerr); + locks[i] = NULL; /* freed by update_ref_write */ + if (ret) + goto cleanup; + } + + /* Perform deletes now that updates are safely completed */ + for (i = 0; i < n; i++) + if (locks[i]) { + delnames[delnum++] = locks[i]->ref_name; + ret |= delete_ref_loose(locks[i], types[i]); + } + ret |= repack_without_refs(delnames, delnum); + for (i = 0; i < delnum; i++) + unlink_or_warn(git_path("logs/%s", delnames[i])); + clear_loose_ref_cache(&ref_cache); + +cleanup: + for (i = 0; i < n; i++) + if (locks[i]) + unlock_ref(locks[i]); + free(updates); + free(types); + free(locks); + free(delnames); + return ret; } /* @@@ -3376,7 -3232,7 +3369,7 @@@ char *shorten_unambiguous_ref(const cha size_t total_len = 0; /* the rule list is NULL terminated, count them first */ - for (; ref_rev_parse_rules[nr_rules]; nr_rules++) + for (nr_rules = 0; ref_rev_parse_rules[nr_rules]; nr_rules++) /* no +1 because strlen("%s") < strlen("%.*s") */ total_len += strlen(ref_rev_parse_rules[nr_rules]); diff --combined refs.h index b113377c48,861170d691..87a1a79ad6 --- a/refs.h +++ b/refs.h @@@ -10,20 -10,6 +10,20 @@@ struct ref_lock int force_write; }; +/** + * Information needed for a single ref update. Set new_sha1 to the + * new value or to zero to delete the ref. To check the old value + * while locking the ref, set have_old to 1 and set old_sha1 to the + * value or to zero to ensure the ref does not exist before update. + */ +struct ref_update { + const char *ref_name; + unsigned char new_sha1[20]; + unsigned char old_sha1[20]; + int flags; /* REF_NODEREF? */ + int have_old; /* 1 if old_sha1 is valid, 0 otherwise */ +}; + /* * Bit values set in the flags argument passed to each_ref_fn(): */ @@@ -151,7 -137,7 +151,7 @@@ extern struct ref_lock *lock_ref_sha1(c #define REF_NODEREF 0x01 extern struct ref_lock *lock_any_ref_for_update(const char *refname, const unsigned char *old_sha1, - int flags); + int flags, int *type_p); /** Close the file descriptor owned by a lock and return the status */ extern int close_ref(struct ref_lock *lock); @@@ -165,14 -151,6 +165,6 @@@ extern void unlock_ref(struct ref_lock /** Writes sha1 into the ref specified by the lock. **/ extern int write_ref_sha1(struct ref_lock *lock, const unsigned char *sha1, const char *msg); - /* - * Invalidate the reference cache for the specified submodule. Use - * submodule=NULL to invalidate the cache for the main module. This - * function must be called if references are changed via a mechanism - * other than the refs API. - */ - extern void invalidate_ref_cache(const char *submodule); - /** Setup reflog before using. **/ int log_ref_setup(const char *ref_name, char *logfile, int bufsize); @@@ -228,12 -206,6 +220,12 @@@ int update_ref(const char *action, cons const unsigned char *sha1, const unsigned char *oldval, int flags, enum action_on_err onerr); +/** + * Lock all refs and then perform all modifications. + */ +int update_refs(const char *action, const struct ref_update **updates, + int n, enum action_on_err onerr); + extern int parse_hide_refs_config(const char *var, const char *value, const char *); extern int ref_is_hidden(const char *);