* mod_auth_digest: Use anonymous shm by default, fall back on name-based.

git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@1684636 13f79535-47bb-0310-9956-ffa450edef68

diff --git a/modules/aaa/mod_auth_digest.c b/modules/aaa/mod_auth_digest.c
index 316da19416864adb07df37d3611292c9398afb07..e9bf364b46ee231b2e13b71537133dd675432e29 100644 (file)
--- a/modules/aaa/mod_auth_digest.c
+++ b/modules/aaa/mod_auth_digest.c
@@ -249,9 +249,18 @@ static int initialize_tables(server_rec *s, apr_pool_t *ctx)
     client_shm_filename = ap_runtime_dir_relative(ctx, "authdigest_shm");
     client_shm_filename = ap_append_pid(ctx, client_shm_filename, ".");
 
-    /* Now create that segment */
-    sts = apr_shm_create(&client_shm, shmem_size,
-                        client_shm_filename, ctx);
+    /* Use anonymous shm by default, fall back on name-based. */
+    sts = apr_shm_create(&client_shm, shmem_size, NULL, ctx);
+    if (APR_STATUS_IS_ENOTIMPL(sts)) {
+        /* For a name-based segment, remove it first in case of a
+         * previous unclean shutdown. */
+        apr_shm_remove(client_shm_filename, ctx);
+
+        /* Now create that segment */
+        sts = apr_shm_create(&client_shm, shmem_size,
+                            client_shm_filename, ctx);
+    }
+
     if (APR_SUCCESS != sts) {
         ap_log_error(APLOG_MARK, APLOG_ERR, sts, s, APLOGNO(01762)
                      "Failed to create shared memory segment on file %s",