diff options
Diffstat (limited to 'builtin/fetch.c')
| -rw-r--r-- | builtin/fetch.c | 236 |
1 files changed, 169 insertions, 67 deletions
diff --git a/builtin/fetch.c b/builtin/fetch.c index d9bb72bf49..8f7249f2b1 100644 --- a/builtin/fetch.c +++ b/builtin/fetch.c @@ -22,6 +22,7 @@ #include "utf8.h" #include "packfile.h" #include "list-objects-filter-options.h" +#include "commit-reach.h" static const char * const builtin_fetch_usage[] = { N_("git fetch [<options>] [<repository> [<refspec>...]]"), @@ -64,6 +65,7 @@ static int shown_url = 0; static struct refspec refmap = REFSPEC_INIT_FETCH; static struct list_objects_filter_options filter_options; static struct string_list server_options = STRING_LIST_INIT_DUP; +static struct string_list negotiation_tip = STRING_LIST_INIT_NODUP; static int git_fetch_config(const char *k, const char *v, void *cb) { @@ -113,7 +115,7 @@ static struct option builtin_fetch_options[] = { N_("append to .git/FETCH_HEAD instead of overwriting")), OPT_STRING(0, "upload-pack", &upload_pack, N_("path"), N_("path to upload pack on remote end")), - OPT__FORCE(&force, N_("force overwrite of local branch"), 0), + OPT__FORCE(&force, N_("force overwrite of local reference"), 0), OPT_BOOL('m', "multiple", &multiple, N_("fetch from multiple remotes")), OPT_SET_INT('t', "tags", &tags, @@ -162,6 +164,8 @@ static struct option builtin_fetch_options[] = { TRANSPORT_FAMILY_IPV4), OPT_SET_INT('6', "ipv6", &family, N_("use IPv6 addresses only"), TRANSPORT_FAMILY_IPV6), + OPT_STRING_LIST(0, "negotiation-tip", &negotiation_tip, N_("revision"), + N_("report that we have only objects reachable from this object")), OPT_PARSE_LIST_OBJECTS_FILTER(&filter_options), OPT_END() }; @@ -235,16 +239,16 @@ static int will_fetch(struct ref **head, const unsigned char *sha1) { struct ref *rm = *head; while (rm) { - if (!hashcmp(rm->old_oid.hash, sha1)) + if (hasheq(rm->old_oid.hash, sha1)) return 1; rm = rm->next; } return 0; } -static void find_non_local_tags(struct transport *transport, - struct ref **head, - struct ref ***tail) +static void find_non_local_tags(const struct ref *refs, + struct ref **head, + struct ref ***tail) { struct string_list existing_refs = STRING_LIST_INIT_DUP; struct string_list remote_refs = STRING_LIST_INIT_NODUP; @@ -252,7 +256,7 @@ static void find_non_local_tags(struct transport *transport, struct string_list_item *item = NULL; for_each_ref(add_existing, &existing_refs); - for (ref = transport_get_remote_refs(transport, NULL); ref; ref = ref->next) { + for (ref = refs; ref; ref = ref->next) { if (!starts_with(ref->name, "refs/tags/")) continue; @@ -326,7 +330,8 @@ static void find_non_local_tags(struct transport *transport, string_list_clear(&remote_refs, 0); } -static struct ref *get_ref_map(struct transport *transport, +static struct ref *get_ref_map(struct remote *remote, + const struct ref *remote_refs, struct refspec *rs, int tags, int *autotags) { @@ -334,26 +339,11 @@ static struct ref *get_ref_map(struct transport *transport, struct ref *rm; struct ref *ref_map = NULL; struct ref **tail = &ref_map; - struct argv_array ref_prefixes = ARGV_ARRAY_INIT; /* opportunistically-updated references: */ struct ref *orefs = NULL, **oref_tail = &orefs; - const struct ref *remote_refs; - - if (rs->nr) - refspec_ref_prefixes(rs, &ref_prefixes); - else if (transport->remote && transport->remote->fetch.nr) - refspec_ref_prefixes(&transport->remote->fetch, &ref_prefixes); - - if (ref_prefixes.argc && - (tags == TAGS_SET || (tags == TAGS_DEFAULT && !rs->nr))) { - argv_array_push(&ref_prefixes, "refs/tags/"); - } - - remote_refs = transport_get_remote_refs(transport, &ref_prefixes); - - argv_array_clear(&ref_prefixes); + struct string_list existing_refs = STRING_LIST_INIT_DUP; if (rs->nr) { struct refspec *fetch_refspec; @@ -390,7 +380,7 @@ static struct ref *get_ref_map(struct transport *transport, if (refmap.nr) fetch_refspec = &refmap; else - fetch_refspec = &transport->remote->fetch; + fetch_refspec = &remote->fetch; for (i = 0; i < fetch_refspec->nr; i++) get_fetch_map(ref_map, &fetch_refspec->items[i], &oref_tail, 1); @@ -398,7 +388,6 @@ static struct ref *get_ref_map(struct transport *transport, die("--refmap option is only meaningful with command-line refspec(s)."); } else { /* Use the defaults */ - struct remote *remote = transport->remote; struct branch *branch = branch_get(NULL); int has_merge = branch_has_merge_config(branch); if (remote && @@ -437,7 +426,7 @@ static struct ref *get_ref_map(struct transport *transport, /* also fetch all tags */ get_fetch_map(remote_refs, tag_refspec, &tail, 0); else if (tags == TAGS_DEFAULT && *autotags) - find_non_local_tags(transport, &ref_map, &tail); + find_non_local_tags(remote_refs, &ref_map, &tail); /* Now append any refs to be updated opportunistically: */ *tail = orefs; @@ -446,7 +435,23 @@ static struct ref *get_ref_map(struct transport *transport, tail = &rm->next; } - return ref_remove_duplicates(ref_map); + ref_map = ref_remove_duplicates(ref_map); + + for_each_ref(add_existing, &existing_refs); + for (rm = ref_map; rm; rm = rm->next) { + if (rm->peer_ref) { + struct string_list_item *peer_item = + string_list_lookup(&existing_refs, + rm->peer_ref->name); + if (peer_item) { + struct object_id *old_oid = peer_item->util; + oidcpy(&rm->peer_ref->old_oid, old_oid); + } + } + } + string_list_clear(&existing_refs, 1); + + return ref_map; } #define STORE_REF_ERROR_OTHER 1 @@ -503,7 +508,7 @@ static void adjust_refcol_width(const struct ref *ref) int max, rlen, llen, len; /* uptodate lines are only shown on high verbosity level */ - if (!verbosity && !oidcmp(&ref->peer_ref->old_oid, &ref->old_oid)) + if (!verbosity && oideq(&ref->peer_ref->old_oid, &ref->old_oid)) return; max = term_columns(); @@ -640,7 +645,7 @@ static int update_local_ref(struct ref *ref, if (type < 0) die(_("object %s not found"), oid_to_hex(&ref->new_oid)); - if (!oidcmp(&ref->old_oid, &ref->new_oid)) { + if (oideq(&ref->old_oid, &ref->new_oid)) { if (verbosity > 0) format_display(display, '=', _("[up to date]"), NULL, remote, pretty_ref, summary_width); @@ -663,16 +668,24 @@ static int update_local_ref(struct ref *ref, if (!is_null_oid(&ref->old_oid) && starts_with(ref->name, "refs/tags/")) { - int r; - r = s_update_ref("updating tag", ref, 0); - format_display(display, r ? '!' : 't', _("[tag update]"), - r ? _("unable to update local ref") : NULL, - remote, pretty_ref, summary_width); - return r; + if (force || ref->force) { + int r; + r = s_update_ref("updating tag", ref, 0); + format_display(display, r ? '!' : 't', _("[tag update]"), + r ? _("unable to update local ref") : NULL, + remote, pretty_ref, summary_width); + return r; + } else { + format_display(display, '!', _("[rejected]"), _("would clobber existing tag"), + remote, pretty_ref, summary_width); + return 1; + } } - current = lookup_commit_reference_gently(&ref->old_oid, 1); - updated = lookup_commit_reference_gently(&ref->new_oid, 1); + current = lookup_commit_reference_gently(the_repository, + &ref->old_oid, 1); + updated = lookup_commit_reference_gently(the_repository, + &ref->new_oid, 1); if (!current || !updated) { const char *msg; const char *what; @@ -756,7 +769,7 @@ static int iterate_ref_map(void *cb_data, struct object_id *oid) } static int store_updated_refs(const char *raw_url, const char *remote_name, - struct ref *ref_map) + int connectivity_checked, struct ref *ref_map) { FILE *fp; struct commit *commit; @@ -778,10 +791,12 @@ static int store_updated_refs(const char *raw_url, const char *remote_name, else url = xstrdup("foreign"); - rm = ref_map; - if (check_connected(iterate_ref_map, &rm, NULL)) { - rc = error(_("%s did not send all necessary objects\n"), url); - goto abort; + if (!connectivity_checked) { + rm = ref_map; + if (check_connected(iterate_ref_map, &rm, NULL)) { + rc = error(_("%s did not send all necessary objects\n"), url); + goto abort; + } } prepare_format_display(ref_map); @@ -805,7 +820,8 @@ static int store_updated_refs(const char *raw_url, const char *remote_name, continue; } - commit = lookup_commit_reference_gently(&rm->old_oid, + commit = lookup_commit_reference_gently(the_repository, + &rm->old_oid, 1); if (!commit) rm->fetch_head_status = FETCH_HEAD_NOT_FOR_MERGE; @@ -915,10 +931,11 @@ static int store_updated_refs(const char *raw_url, const char *remote_name, * everything we are going to fetch already exists and is connected * locally. */ -static int quickfetch(struct ref *ref_map) +static int check_exist_and_connected(struct ref *ref_map) { struct ref *rm = ref_map; struct check_connected_options opt = CHECK_CONNECTED_INIT; + struct ref *r; /* * If we are deepening a shallow clone we already have these @@ -929,19 +946,44 @@ static int quickfetch(struct ref *ref_map) */ if (deepen) return -1; + + /* + * check_connected() allows objects to merely be promised, but + * we need all direct targets to exist. + */ + for (r = rm; r; r = r->next) { + if (!has_object_file(&r->old_oid)) + return -1; + } + opt.quiet = 1; return check_connected(iterate_ref_map, &rm, &opt); } static int fetch_refs(struct transport *transport, struct ref *ref_map) { - int ret = quickfetch(ref_map); + int ret = check_exist_and_connected(ref_map); if (ret) ret = transport_fetch_refs(transport, ref_map); if (!ret) - ret |= store_updated_refs(transport->url, - transport->remote->name, - ref_map); + /* + * Keep the new pack's ".keep" file around to allow the caller + * time to update refs to reference the new objects. + */ + return 0; + transport_unlock_pack(transport); + return ret; +} + +/* Update local refs based on the ref values fetched from a remote */ +static int consume_refs(struct transport *transport, struct ref *ref_map) +{ + int connectivity_checked = transport->smart_options + ? transport->smart_options->connectivity_checked : 0; + int ret = store_updated_refs(transport->url, + transport->remote->name, + connectivity_checked, + ref_map); transport_unlock_pack(transport); return ret; } @@ -1037,6 +1079,40 @@ static void set_option(struct transport *transport, const char *name, const char name, transport->url); } + +static int add_oid(const char *refname, const struct object_id *oid, int flags, + void *cb_data) +{ + struct oid_array *oids = cb_data; + + oid_array_append(oids, oid); + return 0; +} + +static void add_negotiation_tips(struct git_transport_options *smart_options) +{ + struct oid_array *oids = xcalloc(1, sizeof(*oids)); + int i; + + for (i = 0; i < negotiation_tip.nr; i++) { + const char *s = negotiation_tip.items[i].string; + int old_nr; + if (!has_glob_specials(s)) { + struct object_id oid; + if (get_oid(s, &oid)) + die("%s is not a valid object", s); + oid_array_append(oids, &oid); + continue; + } + old_nr = oids->nr; + for_each_glob_ref(add_oid, s, oids); + if (old_nr == oids->nr) + warning("Ignoring --negotiation-tip=%s because it does not match any refs", + s); + } + smart_options->negotiation_tips = oids; +} + static struct transport *prepare_transport(struct remote *remote, int deepen) { struct transport *transport; @@ -1063,6 +1139,12 @@ static struct transport *prepare_transport(struct remote *remote, int deepen) filter_options.filter_spec); set_option(transport, TRANS_OPT_FROM_PROMISOR, "1"); } + if (negotiation_tip.nr) { + if (transport->smart_options) + add_negotiation_tips(transport->smart_options); + else + warning("Ignoring --negotiation-tip because the protocol does not support it."); + } return transport; } @@ -1087,7 +1169,8 @@ static void backfill_tags(struct transport *transport, struct ref *ref_map) transport_set_option(transport, TRANS_OPT_FOLLOWTAGS, NULL); transport_set_option(transport, TRANS_OPT_DEPTH, "0"); transport_set_option(transport, TRANS_OPT_DEEPEN_RELATIVE, NULL); - fetch_refs(transport, ref_map); + if (!fetch_refs(transport, ref_map)) + consume_refs(transport, ref_map); if (gsecondary) { transport_disconnect(gsecondary); @@ -1098,13 +1181,12 @@ static void backfill_tags(struct transport *transport, struct ref *ref_map) static int do_fetch(struct transport *transport, struct refspec *rs) { - struct string_list existing_refs = STRING_LIST_INIT_DUP; struct ref *ref_map; - struct ref *rm; int autotags = (transport->remote->fetch_tags == 1); int retcode = 0; - - for_each_ref(add_existing, &existing_refs); + const struct ref *remote_refs; + struct argv_array ref_prefixes = ARGV_ARRAY_INIT; + int must_list_refs = 1; if (tags == TAGS_DEFAULT) { if (transport->remote->fetch_tags == 2) @@ -1120,22 +1202,43 @@ static int do_fetch(struct transport *transport, goto cleanup; } - ref_map = get_ref_map(transport, rs, tags, &autotags); - if (!update_head_ok) - check_not_current_branch(ref_map); + if (rs->nr) { + int i; - for (rm = ref_map; rm; rm = rm->next) { - if (rm->peer_ref) { - struct string_list_item *peer_item = - string_list_lookup(&existing_refs, - rm->peer_ref->name); - if (peer_item) { - struct object_id *old_oid = peer_item->util; - oidcpy(&rm->peer_ref->old_oid, old_oid); + refspec_ref_prefixes(rs, &ref_prefixes); + + /* + * We can avoid listing refs if all of them are exact + * OIDs + */ + must_list_refs = 0; + for (i = 0; i < rs->nr; i++) { + if (!rs->items[i].exact_sha1) { + must_list_refs = 1; + break; } } + } else if (transport->remote && transport->remote->fetch.nr) + refspec_ref_prefixes(&transport->remote->fetch, &ref_prefixes); + + if (tags == TAGS_SET || tags == TAGS_DEFAULT) { + must_list_refs = 1; + if (ref_prefixes.argc) + argv_array_push(&ref_prefixes, "refs/tags/"); } + if (must_list_refs) + remote_refs = transport_get_remote_refs(transport, &ref_prefixes); + else + remote_refs = NULL; + + argv_array_clear(&ref_prefixes); + + ref_map = get_ref_map(transport->remote, remote_refs, rs, + tags, &autotags); + if (!update_head_ok) + check_not_current_branch(ref_map); + if (tags == TAGS_DEFAULT && autotags) transport_set_option(transport, TRANS_OPT_FOLLOWTAGS, "1"); if (prune) { @@ -1152,7 +1255,7 @@ static int do_fetch(struct transport *transport, transport->url); } } - if (fetch_refs(transport, ref_map)) { + if (fetch_refs(transport, ref_map) || consume_refs(transport, ref_map)) { free_refs(ref_map); retcode = 1; goto cleanup; @@ -1164,14 +1267,13 @@ static int do_fetch(struct transport *transport, if (tags == TAGS_DEFAULT && autotags) { struct ref **tail = &ref_map; ref_map = NULL; - find_non_local_tags(transport, &ref_map, &tail); + find_non_local_tags(remote_refs, &ref_map, &tail); if (ref_map) backfill_tags(transport, ref_map); free_refs(ref_map); } cleanup: - string_list_clear(&existing_refs, 1); return retcode; } |