X-Git-Url: https://git.tokkee.org/?a=blobdiff_plain;f=refs.c;h=9e8e8581ba981ca88366b614f1e8749cfe8a6ae5;hb=08b51f51e6a4cf2f5ad4b893707f1337a450e499;hp=aff02cd09d4e40b04f6764a6f6ab43240b736a08;hpb=3e4bb087a18435b12eb82116e93af2887578e816;p=git.git diff --git a/refs.c b/refs.c index aff02cd09..9e8e8581b 100644 --- a/refs.c +++ b/refs.c @@ -157,6 +157,9 @@ static struct cached_refs { struct ref_list *loose; struct ref_list *packed; } cached_refs; +static struct ref_list *current_ref; + +static struct ref_list *extra_refs; static void free_ref_list(struct ref_list *list) { @@ -214,6 +217,17 @@ static void read_packed_refs(FILE *f, struct cached_refs *cached_refs) cached_refs->packed = sort_ref_list(list); } +void add_extra_ref(const char *name, const unsigned char *sha1, int flag) +{ + extra_refs = add_ref(name, sha1, flag, extra_refs, NULL); +} + +void clear_extra_refs(void) +{ + free_ref_list(extra_refs); + extra_refs = NULL; +} + static struct ref_list *get_packed_refs(void) { if (!cached_refs.did_packed) { @@ -351,6 +365,7 @@ int resolve_gitlink_ref(const char *path, const char *refname, unsigned char *re { int len = strlen(path), retval; char *gitdir; + const char *tmp; while (len && path[len-1] == '/') len--; @@ -358,16 +373,27 @@ int resolve_gitlink_ref(const char *path, const char *refname, unsigned char *re return -1; gitdir = xmalloc(len + MAXREFLEN + 8); memcpy(gitdir, path, len); - memcpy(gitdir + len, "/.git/", 7); - - retval = resolve_gitlink_ref_recursive(gitdir, len+6, refname, result, 0); + memcpy(gitdir + len, "/.git", 6); + len += 5; + + tmp = read_gitfile_gently(gitdir); + if (tmp) { + free(gitdir); + len = strlen(tmp); + gitdir = xmalloc(len + MAXREFLEN + 3); + memcpy(gitdir, tmp, len); + } + gitdir[len] = '/'; + gitdir[++len] = '\0'; + retval = resolve_gitlink_ref_recursive(gitdir, len, refname, result, 0); free(gitdir); return retval; } const char *resolve_ref(const char *ref, unsigned char *sha1, int reading, int *flag) { - int depth = MAXDEPTH, len; + int depth = MAXDEPTH; + ssize_t len; char buffer[256]; static char ref_buffer[256]; @@ -476,6 +502,7 @@ static int do_one_ref(const char *base, each_ref_fn fn, int trim, error("%s does not point to a valid object!", entry->name); return 0; } + current_ref = entry; return fn(entry->name + trim, entry->sha1, entry->flag, cb_data); } @@ -485,6 +512,16 @@ int peel_ref(const char *ref, unsigned char *sha1) unsigned char base[20]; struct object *o; + if (current_ref && (current_ref->name == ref + || !strcmp(current_ref->name, ref))) { + if (current_ref->flag & REF_KNOWS_PEELED) { + hashcpy(sha1, current_ref->peeled); + return 0; + } + hashcpy(base, current_ref->sha1); + goto fallback; + } + if (!resolve_ref(ref, base, 1, &flag)) return -1; @@ -504,9 +541,9 @@ int peel_ref(const char *ref, unsigned char *sha1) } } - /* fallback - callers should not call this for unpacked refs */ +fallback: o = parse_object(base); - if (o->type == OBJ_TAG) { + if (o && o->type == OBJ_TAG) { o = deref_tag(o, ref, 0); if (o) { hashcpy(sha1, o->sha1); @@ -519,10 +556,15 @@ int peel_ref(const char *ref, unsigned char *sha1) static int do_for_each_ref(const char *base, each_ref_fn fn, int trim, void *cb_data) { - int retval; + int retval = 0; struct ref_list *packed = get_packed_refs(); struct ref_list *loose = get_loose_refs(); + struct ref_list *extra; + + for (extra = extra_refs; extra; extra = extra->next) + retval = do_one_ref(base, fn, trim, cb_data, extra); + while (packed && loose) { struct ref_list *entry; int cmp = strcmp(packed->name, loose->name); @@ -539,15 +581,18 @@ static int do_for_each_ref(const char *base, each_ref_fn fn, int trim, } retval = do_one_ref(base, fn, trim, cb_data, entry); if (retval) - return retval; + goto end_each; } for (packed = packed ? packed : loose; packed; packed = packed->next) { retval = do_one_ref(base, fn, trim, cb_data, packed); if (retval) - return retval; + goto end_each; } - return 0; + +end_each: + current_ref = NULL; + return retval; } int head_ref(each_ref_fn fn, void *cb_data) @@ -580,18 +625,6 @@ int for_each_remote_ref(each_ref_fn fn, void *cb_data) return do_for_each_ref("refs/remotes/", fn, 13, cb_data); } -/* NEEDSWORK: This is only used by ssh-upload and it should go; the - * caller should do resolve_ref or read_ref like everybody else. Or - * maybe everybody else should use get_ref_sha1() instead of doing - * read_ref(). - */ -int get_ref_sha1(const char *ref, unsigned char *sha1) -{ - if (check_ref_format(ref)) - return -1; - return read_ref(mkpath("refs/%s", ref), sha1); -} - /* * Make sure "ref" is something reasonable to have under ".git/refs/"; * We do not like it if: @@ -625,36 +658,72 @@ int check_ref_format(const char *ref) while ((ch = *cp++) == '/') ; /* tolerate duplicated slashes */ if (!ch) - return -1; /* should not end with slashes */ + /* should not end with slashes */ + return CHECK_REF_FORMAT_ERROR; /* we are at the beginning of the path component */ if (ch == '.') - return -1; + return CHECK_REF_FORMAT_ERROR; bad_type = bad_ref_char(ch); if (bad_type) { - return (bad_type == 2 && !*cp) ? -3 : -1; + return (bad_type == 2 && !*cp) + ? CHECK_REF_FORMAT_WILDCARD + : CHECK_REF_FORMAT_ERROR; } /* scan the rest of the path component */ while ((ch = *cp++) != 0) { bad_type = bad_ref_char(ch); if (bad_type) { - return (bad_type == 2 && !*cp) ? -3 : -1; + return (bad_type == 2 && !*cp) + ? CHECK_REF_FORMAT_WILDCARD + : CHECK_REF_FORMAT_ERROR; } if (ch == '/') break; if (ch == '.' && *cp == '.') - return -1; + return CHECK_REF_FORMAT_ERROR; } level++; if (!ch) { if (level < 2) - return -2; /* at least of form "heads/blah" */ - return 0; + return CHECK_REF_FORMAT_ONELEVEL; + return CHECK_REF_FORMAT_OK; } } } +const char *ref_rev_parse_rules[] = { + "%.*s", + "refs/%.*s", + "refs/tags/%.*s", + "refs/heads/%.*s", + "refs/remotes/%.*s", + "refs/remotes/%.*s/HEAD", + NULL +}; + +const char *ref_fetch_rules[] = { + "%.*s", + "refs/%.*s", + "refs/heads/%.*s", + NULL +}; + +int refname_match(const char *abbrev_name, const char *full_name, const char **rules) +{ + const char **p; + const int abbrev_name_len = strlen(abbrev_name); + + for (p = rules; *p; p++) { + if (!strcmp(full_name, mkpath(*p, abbrev_name_len, abbrev_name))) { + return 1; + } + } + + return 0; +} + static struct ref_lock *verify_lock(struct ref_lock *lock, const unsigned char *old_sha1, int mustexist) { @@ -797,9 +866,13 @@ struct ref_lock *lock_ref_sha1(const char *ref, const unsigned char *old_sha1) struct ref_lock *lock_any_ref_for_update(const char *ref, const unsigned char *old_sha1, int flags) { - if (check_ref_format(ref) == -1) + switch (check_ref_format(ref)) { + default: return NULL; - return lock_ref_sha1_basic(ref, old_sha1, flags, NULL); + case 0: + case CHECK_REF_FORMAT_ONELEVEL: + return lock_ref_sha1_basic(ref, old_sha1, flags, NULL); + } } static struct lock_file packlock; @@ -836,7 +909,6 @@ static int repack_without_ref(const char *refname) die("too long a refname '%s'", list->name); write_or_die(fd, line, len); } - close(fd); return commit_lock_file(&packlock); } @@ -991,14 +1063,27 @@ int rename_ref(const char *oldref, const char *newref, const char *logmsg) return 1; } +int close_ref(struct ref_lock *lock) +{ + if (close_lock_file(lock->lk)) + return -1; + lock->lock_fd = -1; + return 0; +} + +int commit_ref(struct ref_lock *lock) +{ + if (commit_lock_file(lock->lk)) + return -1; + lock->lock_fd = -1; + return 0; +} + void unlock_ref(struct ref_lock *lock) { - if (lock->lock_fd >= 0) { - close(lock->lock_fd); - /* Do not free lock->lk -- atexit() still looks at them */ - if (lock->lk) - rollback_lock_file(lock->lk); - } + /* Do not free lock->lk -- atexit() still looks at them */ + if (lock->lk) + rollback_lock_file(lock->lk); free(lock->ref_name); free(lock->orig_ref_name); free(lock); @@ -1075,7 +1160,7 @@ static int log_ref_write(const char *ref_name, const unsigned char *old_sha1, adjust_shared_perm(log_file); msglen = msg ? strlen(msg) : 0; - committer = git_committer_info(-1); + committer = git_committer_info(0); maxlen = strlen(committer) + msglen + 100; logrec = xmalloc(maxlen); len = sprintf(logrec, "%s %s %s\n", @@ -1091,10 +1176,16 @@ static int log_ref_write(const char *ref_name, const unsigned char *old_sha1, return 0; } +static int is_branch(const char *refname) +{ + return !strcmp(refname, "HEAD") || !prefixcmp(refname, "refs/heads/"); +} + int write_ref_sha1(struct ref_lock *lock, const unsigned char *sha1, const char *logmsg) { static char term = '\n'; + struct object *o; if (!lock) return -1; @@ -1102,9 +1193,22 @@ int write_ref_sha1(struct ref_lock *lock, unlock_ref(lock); return 0; } + o = parse_object(sha1); + if (!o) { + error("Trying to write ref %s with nonexistant object %s", + lock->ref_name, sha1_to_hex(sha1)); + unlock_ref(lock); + return -1; + } + if (o->type != OBJ_COMMIT && is_branch(lock->ref_name)) { + error("Trying to write non-commit object %s to branch %s", + sha1_to_hex(sha1), lock->ref_name); + unlock_ref(lock); + return -1; + } if (write_in_full(lock->lock_fd, sha1_to_hex(sha1), 40) != 40 || write_in_full(lock->lock_fd, &term, 1) != 1 - || close(lock->lock_fd) < 0) { + || close_ref(lock) < 0) { error("Couldn't write %s", lock->lk->filename); unlock_ref(lock); return -1; @@ -1137,12 +1241,11 @@ int write_ref_sha1(struct ref_lock *lock, !strcmp(head_ref, lock->ref_name)) log_ref_write("HEAD", lock->old_sha1, sha1, logmsg); } - if (commit_lock_file(lock->lk)) { + if (commit_ref(lock)) { error("Couldn't set %s", lock->ref_name); unlock_ref(lock); return -1; } - lock->lock_fd = -1; unlock_ref(lock); return 0; } @@ -1445,3 +1548,11 @@ int update_ref(const char *action, const char *refname, } return 0; } + +struct ref *find_ref_by_name(struct ref *list, const char *name) +{ + for ( ; list; list = list->next) + if (!strcmp(list->name, name)) + return list; + return NULL; +}