feat: 支持proc/self目录

BREAKING CHANGE:
支持proc/self目录对外变更:
1.支持/proc/self挂载目录，用于获取进程信息

Close #I6CZ72

Signed-off-by: zhushengle <zhushengle@huawei.com>
Change-Id: I465278785bd9e27ddbf4d34ee7b5457e39f98b5b

testsuites/unittest/fuzz/pthread_setconcurrency_fuzzer.cpp

@@ -0,0 +1,46 @@
+/*
+ * Copyright (c) 2022-2023 Huawei Device Co., Ltd. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without modification,
+ * are permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice, this list of
+ *    conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright notice, this list
+ *    of conditions and the following disclaimer in the documentation and/or other materials
+ *    provided with the distribution.
+ *
+ * 3. Neither the name of the copyright holder nor the names of its contributors may be used
+ *    to endorse or promote products derived from this software without specific prior written
+ *    permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
+ * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
+ * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
+ * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
+ * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include <secodeFuzz.h>
+#include <pthread.h>
+#include "fuzzertest.h"
+
+void TestPthreadSetconcurrency(void)
+{
+    printf("start----TestPthreadSetconcurrency\n");
+    DT_Enable_Support_Loop(1);
+    
+    DT_FUZZ_START(0, FREQUENCY, const_cast<char *>("TestPthreadSetconcurrency"), 0) {
+        s32 number = *(s32 *)DT_SetGetS32(&g_Element[0], INITVALUE_S32);
+        pthread_setconcurrency(number);
+    }
+    DT_FUZZ_END()
+    printf("end----TestPthreadSetconcurrency\n");
+}