send-pack: avoid deadlock on git:// push with failed pack-objects

diff --git a/builtin-receive-pack.c b/builtin-receive-pack.c
index 325ec6e2c409992e9feba5b2d871835b372c609a..ff3f11731d4a10d807241a10e8860275bedab991 100644 (file)
--- a/builtin-receive-pack.c
+++ b/builtin-receive-pack.c
@@ -2,6 +2,7 @@
 #include "pack.h"
 #include "refs.h"
 #include "pkt-line.h"
+#include "sideband.h"
 #include "run-command.h"
 #include "exec_cmd.h"
 #include "commit.h"
@@ -27,6 +28,7 @@ static int receive_unpack_limit = -1;
 static int transfer_unpack_limit = -1;
 static int unpack_limit = 100;
 static int report_status;
+static int use_sideband;
 static int prefer_ofs_delta = 1;
 static int auto_update_server_info;
 static int auto_gc = 1;
@@ -110,7 +112,7 @@ static int show_ref(const char *path, const unsigned char *sha1, int flag, void
        else
                packet_write(1, "%s %s%c%s%s\n",
                             sha1_to_hex(sha1), path, 0,
-                            " report-status delete-refs",
+                            " report-status delete-refs side-band-64k",
                             prefer_ofs_delta ? " ofs-delta" : "");
        sent_capabilities = 1;
        return 0;
@@ -466,6 +468,8 @@ static void read_head_info(void)
                if (reflen + 82 < len) {
                        if (strstr(refname + reflen + 1, "report-status"))
                                report_status = 1;
+                       if (strstr(refname + reflen + 1, "side-band-64k"))
+                               use_sideband = LARGE_PACKET_MAX;
                }
                cmd = xmalloc(sizeof(struct command) + len - 80);
                hashcpy(cmd->old_sha1, old_sha1);
@@ -565,17 +569,25 @@ static const char *unpack(void)
 static void report(const char *unpack_status)
 {
        struct command *cmd;
-       packet_write(1, "unpack %s\n",
-                    unpack_status ? unpack_status : "ok");
+       struct strbuf buf = STRBUF_INIT;
+
+       packet_buf_write(&buf, "unpack %s\n",
+                        unpack_status ? unpack_status : "ok");
        for (cmd = commands; cmd; cmd = cmd->next) {
                if (!cmd->error_string)
-                       packet_write(1, "ok %s\n",
-                                    cmd->ref_name);
+                       packet_buf_write(&buf, "ok %s\n",
+                                        cmd->ref_name);
                else
-                       packet_write(1, "ng %s %s\n",
-                                    cmd->ref_name, cmd->error_string);
+                       packet_buf_write(&buf, "ng %s %s\n",
+                                        cmd->ref_name, cmd->error_string);
        }
-       packet_flush(1);
+       packet_buf_flush(&buf);
+
+       if (use_sideband)
+               send_sideband(1, 1, buf.buf, buf.len, use_sideband);
+       else
+               safe_write(1, buf.buf, buf.len);
+       strbuf_release(&buf);
 }
 
 static int delete_only(struct command *cmd)
@@ -705,5 +717,7 @@ int cmd_receive_pack(int argc, const char **argv, const char *prefix)
                if (auto_update_server_info)
                        update_server_info(0);
        }
+       if (use_sideband)
+               packet_flush(1);
        return 0;
 }