From: Graham Leggett <minfrin@apache.org>
Date: Tue, 10 Oct 2006 22:10:01 +0000 (+0000)
Subject: mod_disk_cache: NULL fd pointers when closing them, fix missing
X-Git-Tag: 2.3.0~2080
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=2d326ca4072b8252cdde8dd73a8ad1ec037b75d9;p=thirdparty%2Fapache%2Fhttpd.git

mod_disk_cache: NULL fd pointers when closing them, fix missing
close/flush, remove some unneccessary code duplication instead
of calling the right helper in replace_brigade_with_cache().


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@462601 13f79535-47bb-0310-9956-ffa450edef68
---

diff --git a/CHANGES b/CHANGES
index ff208c7e168..6e3b83f7cbd 100644
--- a/CHANGES
+++ b/CHANGES
@@ -2,6 +2,11 @@
 Changes with Apache 2.3.0
   [Remove entries to the current 2.0 and 2.2 section below, when backported]
 
+  *) mod_disk_cache: NULL fd pointers when closing them, fix missing
+     close/flush, remove some unneccessary code duplication instead
+     of calling the right helper in replace_brigade_with_cache().
+     [Niklas Edmundsson <nikke acc.umu.se>]
+
   *) sendfile_nonblocking() takes the _brigade_ as an argument, gets 
      the first bucket from the brigade, finds it not to be a FILE
      bucket and barfs. The fix is to pass a bucket rather than a brigade.
diff --git a/modules/cache/mod_disk_cache.c b/modules/cache/mod_disk_cache.c
index a2bdc1d103b..52add871af3 100644
--- a/modules/cache/mod_disk_cache.c
+++ b/modules/cache/mod_disk_cache.c
@@ -445,6 +445,7 @@ static apr_status_t open_header_timeout(cache_handle_t *h, request_rec *r,
     while(1) {
         if(dobj->hfd) {
             apr_file_close(dobj->hfd);
+            dobj->hfd = NULL;
         }
         rc = open_header(h, r, key, conf);
         if(rc != APR_SUCCESS && rc != CACHE_ENODATA) {
@@ -978,6 +979,7 @@ static apr_status_t recall_headers(cache_handle_t *h, request_rec *r)
     }
 
     apr_file_close(dobj->hfd);
+    dobj->hfd = NULL;
 
     ap_log_error(APLOG_MARK, APLOG_DEBUG, 0, r->server,
                  "disk_cache: Recalled headers for URL %s",  dobj->name);
@@ -1308,6 +1310,7 @@ static apr_status_t store_headers(cache_handle_t *h, request_rec *r,
             rv = apr_file_open(&dobj->hfd, dobj->hdrsfile, 
                     APR_WRITE | APR_BINARY | APR_BUFFERED, 0, r->pool);
             if (rv != APR_SUCCESS) {
+                dobj->hfd = NULL;
                 return rv;
             }
         }
@@ -1342,6 +1345,19 @@ static apr_status_t store_headers(cache_handle_t *h, request_rec *r,
         return rv;
     }
 
+    /* If the body size is unknown, the header file will be rewritten later
+       so we can't close it */
+    if(dobj->initial_size < 0) {
+        rv = apr_file_flush(dobj->hfd);
+    }
+    else {
+        rv = apr_file_close(dobj->hfd);
+        dobj->hfd = NULL;
+    }
+    if(rv != APR_SUCCESS) {
+        return rv;
+    }
+
     ap_log_error(APLOG_MARK, APLOG_DEBUG, 0, r->server,
                  "disk_cache: Stored headers for URL %s",  dobj->name);
     return APR_SUCCESS;
@@ -1418,23 +1434,20 @@ static apr_status_t replace_brigade_with_cache(cache_handle_t *h,
                                                apr_bucket_brigade *bb)
 {
     apr_status_t rv;
-    int flags;
     apr_bucket *e;
-    core_dir_config *pdcfg = ap_get_module_config(r->per_dir_config,
-            &core_module);
     disk_cache_object_t *dobj = (disk_cache_object_t *) h->cache_obj->vobj;
 
-    flags = APR_READ|APR_BINARY;
-#if APR_HAS_SENDFILE
-    flags |= ((pdcfg->enable_sendfile == ENABLE_SENDFILE_OFF)
-            ? 0 : APR_SENDFILE_ENABLED);
-#endif
-
-    rv = apr_file_open(&dobj->fd, dobj->datafile, flags, 0, r->pool);
+    if(dobj->fd) {
+        apr_file_close(dobj->fd);
+        dobj->fd = NULL;
+    }
+    rv = open_body_timeout(r, dobj->name, dobj);
     if (rv != APR_SUCCESS) {
-        ap_log_error(APLOG_MARK, APLOG_ERR, rv, r->server,
-                     "disk_cache: Error opening datafile %s for URL %s",
-                     dobj->datafile, dobj->name);
+        if(rv != CACHE_EDECLINED) {
+            ap_log_error(APLOG_MARK, APLOG_ERR, rv, r->server,
+                         "disk_cache: Error opening datafile %s for URL %s",
+                         dobj->datafile, dobj->name);
+        }
         return rv;
     }
 
@@ -1664,14 +1677,12 @@ static apr_status_t store_body(cache_handle_t *h, request_rec *r,
 
     /* All checks were fine, close output file */
     rv = apr_file_close(dobj->fd);
+    dobj->fd = NULL;
     if(rv != APR_SUCCESS) {
         file_cache_errorcleanup(dobj, r);
         return rv;
     }
 
-    ap_log_error(APLOG_MARK, APLOG_DEBUG, 0, r->server,
-                 "disk_cache: Body for URL %s cached.",  dobj->name);
-
     /* Redirect to cachefile if we copied a plain file */
     if(copy_file) {
         rv = replace_brigade_with_cache(h, r, bb);