Blame SOURCES/0168-CACHE_REQ-Simplify-_search_ncache_filter.patch

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From 992a6410a3100cc64f9f2ea674fda9151fa5d474 Mon Sep 17 00:00:00 2001
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From: =?UTF-8?q?Fabiano=20Fid=C3=AAncio?= <fidencio@redhat.com>
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Date: Mon, 29 May 2017 14:58:33 +0200
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Subject: [PATCH 168/169] CACHE_REQ: Simplify _search_ncache_filter()
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MIME-Version: 1.0
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Content-Type: text/plain; charset=UTF-8
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Content-Transfer-Encoding: 8bit
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Let's make the result and input/output argument for
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_search_ncache_filter() and free it inside the function whenever it's
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needed instead of leaving this responsibility for the caller.
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Related:
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https://pagure.io/SSSD/sssd/issue/3362
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Signed-off-by: Fabiano Fidêncio <fidencio@redhat.com>
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Reviewed-by: Pavel Březina <pbrezina@redhat.com>
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(cherry picked from commit c8193b1602cf44740b59f5dfcdc5330508c0c365)
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---
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 src/responder/common/cache_req/cache_req_search.c | 27 ++++++-----------------
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 1 file changed, 7 insertions(+), 20 deletions(-)
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diff --git a/src/responder/common/cache_req/cache_req_search.c b/src/responder/common/cache_req/cache_req_search.c
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index 70448a7639bc9f98d380b8edce9d130adfa0ceb2..d3aaa7542ddfd28716fbf9cdcedfeadb649dbaa0 100644
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--- a/src/responder/common/cache_req/cache_req_search.c
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+++ b/src/responder/common/cache_req/cache_req_search.c
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@@ -86,7 +86,6 @@ static void cache_req_search_ncache_add(struct cache_req *cr)
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 static errno_t cache_req_search_ncache_filter(TALLOC_CTX *mem_ctx,
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                                               struct cache_req *cr,
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-                                              struct ldb_result *result,
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                                               struct ldb_result **_result)
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 {
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     TALLOC_CTX *tmp_ctx;
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@@ -106,8 +105,6 @@ static errno_t cache_req_search_ncache_filter(TALLOC_CTX *mem_ctx,
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                         "This request type does not support filtering "
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                         "result by negative cache\n");
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-        *_result = talloc_steal(mem_ctx, result);
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-
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         ret = EOK;
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         goto done;
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     }
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@@ -115,11 +112,11 @@ static errno_t cache_req_search_ncache_filter(TALLOC_CTX *mem_ctx,
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     CACHE_REQ_DEBUG(SSSDBG_TRACE_FUNC, cr,
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                     "Filtering out results by negative cache\n");
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-    msgs = talloc_zero_array(tmp_ctx, struct ldb_message *, result->count);
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+    msgs = talloc_zero_array(tmp_ctx, struct ldb_message *, (*_result)->count);
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     msg_count = 0;
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-    for (size_t i = 0; i < result->count; i++) {
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-        name = sss_get_name_from_msg(cr->domain, result->msgs[i]);
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+    for (size_t i = 0; i < (*_result)->count; i++) {
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+        name = sss_get_name_from_msg(cr->domain, (*_result)->msgs[i]);
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         if (name == NULL) {
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             CACHE_REQ_DEBUG(SSSDBG_CRIT_FAILURE, cr,
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                   "sss_get_name_from_msg() returned NULL, which should never "
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@@ -141,7 +138,7 @@ static errno_t cache_req_search_ncache_filter(TALLOC_CTX *mem_ctx,
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             goto done;
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         }
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-        msgs[msg_count] = talloc_steal(msgs, result->msgs[i]);
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+        msgs[msg_count] = talloc_steal(msgs, (*_result)->msgs[i]);
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         msg_count++;
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     }
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@@ -157,6 +154,7 @@ static errno_t cache_req_search_ncache_filter(TALLOC_CTX *mem_ctx,
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         goto done;
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     }
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+    talloc_zfree(*_result);
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     *_result = talloc_steal(mem_ctx, filtered_result);
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     ret = EOK;
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@@ -419,10 +417,8 @@ static void cache_req_search_oob_done(struct tevent_req *subreq)
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 static void cache_req_search_done(struct tevent_req *subreq)
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 {
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-    TALLOC_CTX *tmp_ctx;
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     struct cache_req_search_state *state;
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     struct tevent_req *req;
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-    struct ldb_result *result = NULL;
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     errno_t ret;
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     req = tevent_req_callback_data(subreq, struct tevent_req);
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@@ -431,14 +427,8 @@ static void cache_req_search_done(struct tevent_req *subreq)
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     state->dp_success = state->cr->plugin->dp_recv_fn(subreq, state->cr);
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     talloc_zfree(subreq);
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-    tmp_ctx = talloc_new(NULL);
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-    if (tmp_ctx == NULL) {
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-        ret = ENOMEM;
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-        goto done;
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-    }
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-
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     /* Get result from cache again. */
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-    ret = cache_req_search_cache(tmp_ctx, state->cr, &result);
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+    ret = cache_req_search_cache(state, state->cr, &state->result);
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     if (ret != EOK) {
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         if (ret == ENOENT) {
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             /* Only store entry in negative cache if DP request succeeded
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@@ -451,8 +441,7 @@ static void cache_req_search_done(struct tevent_req *subreq)
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     }
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     /* ret == EOK */
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-    ret = cache_req_search_ncache_filter(state, state->cr, result,
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-                                         &state->result);
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+    ret = cache_req_search_ncache_filter(state, state->cr, &state->result);
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     if (ret != EOK) {
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         goto done;
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     }
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@@ -461,8 +450,6 @@ static void cache_req_search_done(struct tevent_req *subreq)
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                     "Returning updated object [%s]\n", state->cr->debugobj);
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 done:
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-    talloc_free(tmp_ctx);
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-
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     if (ret != EOK) {
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         tevent_req_error(req, ret);
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         return;
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-- 
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2.9.4
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