From b4cdbedeffeb207c3258bd38a22d37838551c8aa Mon Sep 17 00:00:00 2001
From: zhushengle <zhushengle@huawei.com>
Date: Mon, 29 Aug 2022 19:10:39 +0800
Subject: [PATCH] =?UTF-8?q?feat:=20=E6=B7=BB=E5=8A=A0=E6=B2=99=E7=AE=B1?=
 =?UTF-8?q?=E5=85=AC=E5=85=B1API?=
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Close #I5OE8Q
Signed-off-by: zhushengle <zhushengle@huawei.com>
Change-Id: Ib68e98ad33043d25110c4a0ded28f0042cd5cc7f
---
 base/BUILD.gn                |  1 +
 base/include/sandbox_utils.h | 25 +++++++++++++
 base/src/sandbox_utils.cpp   | 72 ++++++++++++++++++++++++++++++++++++
 3 files changed, 98 insertions(+)
 create mode 100644 base/include/sandbox_utils.h
 create mode 100644 base/src/sandbox_utils.cpp

diff --git a/base/BUILD.gn b/base/BUILD.gn
index 75383b1..713d1a4 100644
--- a/base/BUILD.gn
+++ b/base/BUILD.gn
@@ -56,6 +56,7 @@ sources_utils = [
   "src/timer_event_handler.cpp",
   "src/ashmem.cpp",
   "src/rwlock.cpp",
+  "src/sandbox_utils.cpp",
 ]
 
 securec_sources = [
diff --git a/base/include/sandbox_utils.h b/base/include/sandbox_utils.h
new file mode 100644
index 0000000..1a7f5d4
--- /dev/null
+++ b/base/include/sandbox_utils.h
@@ -0,0 +1,25 @@
+/*
+ * Copyright (c) 2022 Huawei Device Co., Ltd.
+ * 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.
+ */
+
+#ifndef SANDBOX_UTILS_H
+#define SANDBOX_UTILS_H
+
+#include <iostream>
+#include <unistd.h>
+
+namespace OHOS {
+pid_t GetRealPid(void);
+} // namespace OHOS
+#endif
diff --git a/base/src/sandbox_utils.cpp b/base/src/sandbox_utils.cpp
new file mode 100644
index 0000000..cd83871
--- /dev/null
+++ b/base/src/sandbox_utils.cpp
@@ -0,0 +1,72 @@
+/*
+ * Copyright (c) 2022 Huawei Device Co., Ltd.
+ * 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 "sandbox_utils.h"
+#include <stdio.h>
+
+namespace OHOS {
+#ifndef OHOS_LITE
+#define PID_STR_SIZE 4
+#define STATUS_LINE_SIZE 1024
+
+static int FindAndConvertPid(char *buf)
+{
+    int count = 0;
+    char pidBuf[11] = {0}; /* 11: 32 bits to the maximum length of a string */
+    char *str = buf;
+    while (*str != '\0') {
+        if ((*str >= '0') && (*str <= '9')) {
+            pidBuf[count] = *str;
+            count++;
+            str++;
+            continue;
+        }
+
+        if (count > 0) {
+            break;
+        }
+        str++;
+    }
+    return atoi(pidBuf);
+}
+#endif
+
+pid_t GetRealPid(void)
+{
+#ifdef OHOS_LITE
+    return getpid();
+#else
+    const char *path = "/proc/self/status";
+    char buf[STATUS_LINE_SIZE] = {0};
+    FILE *fp = fopen(path, "r");
+    if (fp == nullptr) {
+        return -1;
+    }
+
+    while (!feof(fp)) {
+        if (fgets(buf, STATUS_LINE_SIZE, fp) == nullptr) {
+            fclose(fp);
+            return -1;
+        }
+        if (strncmp(buf, "Pid:", PID_STR_SIZE) == 0) {
+            break;
+        }
+    }
+    fclose(fp);
+
+    return (pid_t)FindAndConvertPid(buf);
+#endif
+}
+} // namespace OHOS
-- 
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