remote-curl: pass curl slot_results back through run_slot

Some callers may want to know more than just the integer
error code we return. Let them optionally pass a
slot_results struct to fill in (or NULL if they do not
care). In either case we continue to return the integer
code.

We can also give probe_rpc the same treatment (since it
builds directly on run_slot).

Signed-off-by: Jeff King <peff@peff.net>

diff --git a/remote-curl.c b/remote-curl.c
index 5b3ce9e..9ad3471 100644 (file)
--- a/remote-curl.c
+++ b/remote-curl.c
@@ -364,25 +364,29 @@ static size_t rpc_in(char *ptr, size_t eltsize,
        return size;
 }
 
-static int run_slot(struct active_request_slot *slot)
+static int run_slot(struct active_request_slot *slot,
+                   struct slot_results *results)
 {
        int err;
-       struct slot_results results;
+       struct slot_results results_buf;
 
-       slot->results = &results;
+       if (!results)
+               results = &results_buf;
+
+       slot->results = results;
        slot->curl_result = curl_easy_perform(slot->curl);
        finish_active_slot(slot);
 
-       err = handle_curl_result(&results);
+       err = handle_curl_result(results);
        if (err != HTTP_OK && err != HTTP_REAUTH) {
                error("RPC failed; result=%d, HTTP code = %ld",
-                     results.curl_result, results.http_code);
+                     results->curl_result, results->http_code);
        }
 
        return err;
 }
 
-static int probe_rpc(struct rpc_state *rpc)
+static int probe_rpc(struct rpc_state *rpc, struct slot_results *results)
 {
        struct active_request_slot *slot;
        struct curl_slist *headers = NULL;
@@ -404,7 +408,7 @@ static int probe_rpc(struct rpc_state *rpc)
        curl_easy_setopt(slot->curl, CURLOPT_WRITEFUNCTION, fwrite_buffer);
        curl_easy_setopt(slot->curl, CURLOPT_FILE, &buf);
 
-       err = run_slot(slot);
+       err = run_slot(slot, results);
 
        curl_slist_free_all(headers);
        strbuf_release(&buf);
@@ -443,7 +447,7 @@ static int post_rpc(struct rpc_state *rpc)
 
        if (large_request) {
                do {
-                       err = probe_rpc(rpc);
+                       err = probe_rpc(rpc, NULL);
                } while (err == HTTP_REAUTH);
                if (err != HTTP_OK)
                        return -1;
@@ -542,7 +546,7 @@ retry:
        curl_easy_setopt(slot->curl, CURLOPT_WRITEFUNCTION, rpc_in);
        curl_easy_setopt(slot->curl, CURLOPT_FILE, rpc);
 
-       err = run_slot(slot);
+       err = run_slot(slot, NULL);
        if (err == HTTP_REAUTH && !large_request)
                goto retry;
        if (err != HTTP_OK)