http-fetch: Abort requests for objects which arrived in packs

In fetch_object, there's a call to release an object request if the
object mysteriously arrived, say in a pack.  Unfortunately, the fetch
attempt for this object might already be in progress, and we'll leak the
descriptor.  Instead, try to tidy away the request.

Signed-off-by: Mark Wooding <mdw@distorted.org.uk>
Signed-off-by: Junio C Hamano <junkio@cox.net>

diff --git a/http-fetch.c b/http-fetch.c
index bddbd6b..ce3df5f 100644 (file)
--- a/http-fetch.c
+++ b/http-fetch.c
@@ -773,6 +773,20 @@ static int fetch_pack(struct alt_base *repo, unsigned char *sha1)
        return 0;
 }
 
+static void abort_object_request(struct object_request *obj_req)
+{
+       if (obj_req->local >= 0) {
+               close(obj_req->local);
+               obj_req->local = -1;
+       }
+       unlink(obj_req->tmpfile);
+       if (obj_req->slot) {
+               release_active_slot(obj_req->slot);
+               obj_req->slot = NULL;
+       }
+       release_object_request(obj_req);
+}
+
 static int fetch_object(struct alt_base *repo, unsigned char *sha1)
 {
        char *hex = sha1_to_hex(sha1);
@@ -785,7 +799,7 @@ static int fetch_object(struct alt_base *repo, unsigned char *sha1)
                return error("Couldn't find request for %s in the queue", hex);
 
        if (has_sha1_file(obj_req->sha1)) {
-               release_object_request(obj_req);
+               abort_object_request(obj_req);
                return 0;
        }
 

diff --git a/http.c b/http.c
index 632c2c5..14a7669 100644 (file)
--- a/http.c
+++ b/http.c
@@ -420,10 +420,26 @@ void run_active_slot(struct active_request_slot *slot)
 #endif
 }
 
-static void finish_active_slot(struct active_request_slot *slot)
+static void closedown_active_slot(struct active_request_slot *slot)
 {
         active_requests--;
         slot->in_use = 0;
+}
+
+void release_active_slot(struct active_request_slot *slot)
+{
+       closedown_active_slot(slot);
+       if (slot->curl) {
+               curl_multi_remove_handle(curlm, slot->curl);
+               curl_easy_cleanup(slot->curl);
+               slot->curl = NULL;
+       }
+       fill_active_slots();
+}
+
+static void finish_active_slot(struct active_request_slot *slot)
+{
+       closedown_active_slot(slot);
         curl_easy_getinfo(slot->curl, CURLINFO_HTTP_CODE, &slot->http_code);
 
        /* Store slot results so they can be read after the slot is reused */

diff --git a/http.h b/http.h
index d6dc9d8..36fa154 100644 (file)
--- a/http.h
+++ b/http.h
@@ -61,6 +61,7 @@ extern struct active_request_slot *get_active_slot(void);
 extern int start_active_slot(struct active_request_slot *slot);
 extern void run_active_slot(struct active_request_slot *slot);
 extern void finish_all_active_slots(void);
+extern void release_active_slot(struct active_request_slot *slot);
 
 #ifdef USE_CURL_MULTI
 extern void fill_active_slots(void);