diff options
Diffstat (limited to 'remote.c')
| -rw-r--r-- | remote.c | 178 |
1 files changed, 165 insertions, 13 deletions
@@ -148,6 +148,7 @@ static struct remote *make_remote(const char *name, int len) } ret = xcalloc(1, sizeof(struct remote)); + ret->prune = -1; /* unspecified */ ALLOC_GROW(remotes, remotes_nr + 1, remotes_alloc); remotes[remotes_nr++] = ret; if (len) @@ -404,6 +405,8 @@ static int handle_config(const char *key, const char *value, void *cb) remote->skip_default_update = git_config_bool(key, value); else if (!strcmp(subkey, ".skipfetchall")) remote->skip_default_update = git_config_bool(key, value); + else if (!strcmp(subkey, ".prune")) + remote->prune = git_config_bool(key, value); else if (!strcmp(subkey, ".url")) { const char *v; if (git_config_string(&v, key, value)) @@ -1302,6 +1305,14 @@ static void add_missing_tags(struct ref *src, struct ref **dst, struct ref ***ds free(sent_tips.tip); } +struct ref *find_ref_by_name(const struct ref *list, const char *name) +{ + for ( ; list; list = list->next) + if (!strcmp(list->name, name)) + return (struct ref *)list; + return NULL; +} + static void prepare_ref_index(struct string_list *ref_index, struct ref *ref) { for ( ; ref; ref = ref->next) @@ -1411,12 +1422,13 @@ int match_push_refs(struct ref *src, struct ref **dst, } void set_ref_status_for_push(struct ref *remote_refs, int send_mirror, - int force_update) + int force_update) { struct ref *ref; for (ref = remote_refs; ref; ref = ref->next) { int force_ref_update = ref->force || force_update; + int reject_reason = 0; if (ref->peer_ref) hashcpy(ref->new_sha1, ref->peer_ref->new_sha1); @@ -1431,6 +1443,26 @@ void set_ref_status_for_push(struct ref *remote_refs, int send_mirror, } /* + * Bypass the usual "must fast-forward" check but + * replace it with a weaker "the old value must be + * this value we observed". If the remote ref has + * moved and is now different from what we expect, + * reject any push. + * + * It also is an error if the user told us to check + * with the remote-tracking branch to find the value + * to expect, but we did not have such a tracking + * branch. + */ + if (ref->expect_old_sha1) { + if (ref->expect_old_no_trackback || + hashcmp(ref->old_sha1, ref->old_sha1_expect)) + reject_reason = REF_STATUS_REJECT_STALE; + } + + /* + * The usual "must fast-forward" rules. + * * Decide whether an individual refspec A:B can be * pushed. The push will succeed if any of the * following are true: @@ -1448,24 +1480,26 @@ void set_ref_status_for_push(struct ref *remote_refs, int send_mirror, * passing the --force argument */ - if (!ref->deletion && !is_null_sha1(ref->old_sha1)) { - int why = 0; /* why would this push require --force? */ - + else if (!ref->deletion && !is_null_sha1(ref->old_sha1)) { if (!prefixcmp(ref->name, "refs/tags/")) - why = REF_STATUS_REJECT_ALREADY_EXISTS; + reject_reason = REF_STATUS_REJECT_ALREADY_EXISTS; else if (!has_sha1_file(ref->old_sha1)) - why = REF_STATUS_REJECT_FETCH_FIRST; + reject_reason = REF_STATUS_REJECT_FETCH_FIRST; else if (!lookup_commit_reference_gently(ref->old_sha1, 1) || !lookup_commit_reference_gently(ref->new_sha1, 1)) - why = REF_STATUS_REJECT_NEEDS_FORCE; + reject_reason = REF_STATUS_REJECT_NEEDS_FORCE; else if (!ref_newer(ref->new_sha1, ref->old_sha1)) - why = REF_STATUS_REJECT_NONFASTFORWARD; - - if (!force_ref_update) - ref->status = why; - else if (why) - ref->forced_update = 1; + reject_reason = REF_STATUS_REJECT_NONFASTFORWARD; } + + /* + * "--force" will defeat any rejection implemented + * by the rules above. + */ + if (!force_ref_update) + ref->status = reject_reason; + else if (reject_reason) + ref->forced_update = 1; } } @@ -1936,3 +1970,121 @@ struct ref *get_stale_heads(struct refspec *refs, int ref_count, struct ref *fet string_list_clear(&ref_names, 0); return stale_refs; } + +/* + * Compare-and-swap + */ +void clear_cas_option(struct push_cas_option *cas) +{ + int i; + + for (i = 0; i < cas->nr; i++) + free(cas->entry[i].refname); + free(cas->entry); + memset(cas, 0, sizeof(*cas)); +} + +static struct push_cas *add_cas_entry(struct push_cas_option *cas, + const char *refname, + size_t refnamelen) +{ + struct push_cas *entry; + ALLOC_GROW(cas->entry, cas->nr + 1, cas->alloc); + entry = &cas->entry[cas->nr++]; + memset(entry, 0, sizeof(*entry)); + entry->refname = xmemdupz(refname, refnamelen); + return entry; +} + +int parse_push_cas_option(struct push_cas_option *cas, const char *arg, int unset) +{ + const char *colon; + struct push_cas *entry; + + if (unset) { + /* "--no-<option>" */ + clear_cas_option(cas); + return 0; + } + + if (!arg) { + /* just "--<option>" */ + cas->use_tracking_for_rest = 1; + return 0; + } + + /* "--<option>=refname" or "--<option>=refname:value" */ + colon = strchrnul(arg, ':'); + entry = add_cas_entry(cas, arg, colon - arg); + if (!*colon) + entry->use_tracking = 1; + else if (get_sha1(colon + 1, entry->expect)) + return error("cannot parse expected object name '%s'", colon + 1); + return 0; +} + +int parseopt_push_cas_option(const struct option *opt, const char *arg, int unset) +{ + return parse_push_cas_option(opt->value, arg, unset); +} + +int is_empty_cas(const struct push_cas_option *cas) +{ + return !cas->use_tracking_for_rest && !cas->nr; +} + +/* + * Look at remote.fetch refspec and see if we have a remote + * tracking branch for the refname there. Fill its current + * value in sha1[]. + * If we cannot do so, return negative to signal an error. + */ +static int remote_tracking(struct remote *remote, const char *refname, + unsigned char sha1[20]) +{ + char *dst; + + dst = apply_refspecs(remote->fetch, remote->fetch_refspec_nr, refname); + if (!dst) + return -1; /* no tracking ref for refname at remote */ + if (read_ref(dst, sha1)) + return -1; /* we know what the tracking ref is but we cannot read it */ + return 0; +} + +static void apply_cas(struct push_cas_option *cas, + struct remote *remote, + struct ref *ref) +{ + int i; + + /* Find an explicit --<option>=<name>[:<value>] entry */ + for (i = 0; i < cas->nr; i++) { + struct push_cas *entry = &cas->entry[i]; + if (!refname_match(entry->refname, ref->name, ref_rev_parse_rules)) + continue; + ref->expect_old_sha1 = 1; + if (!entry->use_tracking) + hashcpy(ref->old_sha1_expect, cas->entry[i].expect); + else if (remote_tracking(remote, ref->name, ref->old_sha1_expect)) + ref->expect_old_no_trackback = 1; + return; + } + + /* Are we using "--<option>" to cover all? */ + if (!cas->use_tracking_for_rest) + return; + + ref->expect_old_sha1 = 1; + if (remote_tracking(remote, ref->name, ref->old_sha1_expect)) + ref->expect_old_no_trackback = 1; +} + +void apply_push_cas(struct push_cas_option *cas, + struct remote *remote, + struct ref *remote_refs) +{ + struct ref *ref; + for (ref = remote_refs; ref; ref = ref->next) + apply_cas(cas, remote, ref); +} |