receive-pack: check connectivity before concluding "git push"

Signed-off-by: Junio C Hamano <gitster@pobox.com>

Junio C Hamano committed Sep 2, 2011 at 16:52 UTC 52fed6e1ce07250ada3d2d0128015f131e3ad6c1
1 file changed +43
builtin/receive-pack.c
+43
@@ -11,6 +11,7 @@
11 #include "transport.h"
12 #include "string-list.h"
13 #include "sha1-array.h"
14 +#include "connected.h"
15
16 static const char receive_pack_usage[] = "git receive-pack <git-dir>";
17
@@ -546,6 +547,43 @@ static void check_aliased_updates(struct command *commands)
547 string_list_clear(&ref_list, 0);
548 }
549
550 +static int command_singleton_iterator(void *cb_data, unsigned char sha1[20])
551 +{
552 + struct command **cmd_list = cb_data;
553 + struct command *cmd = *cmd_list;
554 +
555 + if (!cmd)
556 + return -1; /* end of list */
557 + *cmd_list = NULL; /* this returns only one */
558 + hashcpy(sha1, cmd->new_sha1);
559 + return 0;
560 +}
561 +
562 +static void set_connectivity_errors(struct command *commands)
563 +{
564 + struct command *cmd;
565 +
566 + for (cmd = commands; cmd; cmd = cmd->next) {
567 + struct command *singleton = cmd;
568 + if (!check_everything_connected(command_singleton_iterator,
569 + 0, &singleton))
570 + continue;
571 + cmd->error_string = "missing necessary objects";
572 + }
573 +}
574 +
575 +static int iterate_receive_command_list(void *cb_data, unsigned char sha1[20])
576 +{
577 + struct command **cmd_list = cb_data;
578 + struct command *cmd = *cmd_list;
579 +
580 + if (!cmd)
581 + return -1; /* end of list */
582 + *cmd_list = cmd->next;
583 + hashcpy(sha1, cmd->new_sha1);
584 + return 0;
585 +}
586 +
587 static void execute_commands(struct command *commands, const char *unpacker_error)
588 {
589 struct command *cmd;
@@ -557,6 +595,11 @@ static void execute_commands(struct command *commands, const char *unpacker_erro
595 return;
596 }
597
598 + cmd = commands;
599 + if (check_everything_connected(iterate_receive_command_list,
600 + 0, &cmd))
601 + set_connectivity_errors(commands);
602 +
603 if (run_receive_hook(commands, pre_receive_hook)) {
604 for (cmd = commands; cmd; cmd = cmd->next)
605 cmd->error_string = "pre-receive hook declined";