1 files changed, 95 insertions, 0 deletions
diff --git a/tests/storage/opentest.c b/tests/storage/opentest.c
new file mode 100644
index 00000000..05d55869
--- /dev/null
+++ b/tests/storage/opentest.c
@@ -0,0 +1,95 @@
+/*
+ * Copyright (C) 2012 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <sys/time.h>
+#include <sys/resource.h>
+
+int main(int argc, char *argv[])
+{
+    int i;
+    int nfiles;
+    int *fds;
+    char *dir;
+    struct stat statbuf;
+    char name[16];
+    struct rlimit rlim;
+
+    if (argc != 3) {
+        fprintf(stderr, "Usage: opentest <directory> <num_files>\n");
+        exit(1);
+    }
+
+    dir = argv[1];
+
+    nfiles = atoi(argv[2]);
+    if ((nfiles <= 0) || (nfiles > 65536)) {
+        fprintf(stderr, "num_files must be between 1 and 65536\n");
+        exit(1);
+    }
+
+    if (stat(dir, &statbuf)) {
+        fprintf(stderr, "Cannot stat %s\n", dir);
+        exit(1);
+    }
+
+    if (! S_ISDIR(statbuf.st_mode)) {
+        fprintf(stderr, "%s is not a directory!\n", dir);
+        exit(1);
+    }
+
+    if (access(dir, R_OK | W_OK)) {
+        fprintf(stderr, "No access to %s\n", dir);
+        exit(1);
+    }
+
+    fds = malloc(nfiles * sizeof(int));
+    if (fds == 0) {
+        fprintf(stderr, "Unable to malloc array of %d fds\n", nfiles);
+        exit(1);
+    }
+
+    if (chdir(dir)) {
+        fprintf(stderr, "Cannot chdir to %s\n", dir);
+        exit(1);
+    }
+
+    rlim.rlim_cur = nfiles + 10;
+    rlim.rlim_max = nfiles + 10;
+    if (setrlimit(RLIMIT_NOFILE, &rlim)) {
+        fprintf(stderr, "Unable to raise RLIMIT_NOFILE to %ld\n", rlim.rlim_cur);
+        exit(1);
+    }
+
+    for (i = 0; i < nfiles; i++) {
+        snprintf(name, sizeof(name), "%d", i);
+        fds[i] = open(name, O_WRONLY | O_CREAT, 0666);
+        if (fds[i] < 0) {
+            fprintf(stderr, "Unable to open %d fd\n", i);
+            exit(1);
+        }
+    }
+
+    /* Rely upon exit to cleanup! */
+    exit(0);
+}
+
+