[PATCH] http-fetch: Abort requests for objects which arrived in packs
From: Mark Wooding <hidden>
Date: 2016-06-15 22:42:18
Subsystem:
the rest · Maintainer:
Linus Torvalds
From: Mark Wooding <redacted> 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 <redacted> --- http-fetch.c | 16 +++++++++++++++- http.c | 18 +++++++++++++++++- http.h | 1 + 3 files changed, 33 insertions(+), 2 deletions(-)
diff --git a/http-fetch.c b/http-fetch.c
index bddbd6b..ce3df5f 100644
--- a/http-fetch.c
+++ b/http-fetch.c@@ -773,6 +773,20 @@ static int fetch_pack(struct alt_base *r 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 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
--- a/http.c
+++ b/http.c@@ -420,10 +420,26 @@ void run_active_slot(struct active_reque #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
--- a/http.h
+++ b/http.h@@ -61,6 +61,7 @@ extern struct active_request_slot *get_a 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);