libs/libc/unistd: add dummy getrlimit & setrlimit support

Change-Id: Iee826204596c492ace853e49ab7ff26a2ae7fe60
Signed-off-by: ligd <liguiding1@xiaomi.com>

libs/libc/unistd/Make.defs

@@ -41,6 +41,7 @@ CSRCS += lib_alarm.c lib_fstatvfs.c lib_statvfs.c lib_sleep.c lib_usleep.c
 CSRCS += lib_seteuid.c lib_setegid.c lib_geteuid.c lib_getegid.c
 CSRCS += lib_setreuid.c lib_setregid.c
 CSRCS += lib_getrusage.c lib_utimes.c
+CSRCS += lib_setrlimit.c lib_getrlimit.c
 
 ifneq ($(CONFIG_SCHED_USER_IDENTITY),y)
 CSRCS += lib_setuid.c lib_setgid.c lib_getuid.c lib_getgid.c

libs/libc/unistd/lib_getrlimit.c

@@ -0,0 +1,57 @@
+/****************************************************************************
+ * libs/libc/unistd/lib_getrlimit.c
+ *
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.  The
+ * ASF licenses this file to you 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.
+ *
+ ****************************************************************************/
+
+/****************************************************************************
+ * Included Files
+ ****************************************************************************/
+
+#include <nuttx/config.h>
+
+#include <string.h>
+#include <errno.h>
+
+#include <sys/resource.h>
+
+/****************************************************************************
+ * Public Functions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Name: getrlimit
+ *
+ * Description:
+ *   The getrlimit() and setrlimit() system calls get and
+ *   set resource limits respectively.
+ *
+ ****************************************************************************/
+
+int getrlimit(int resource, FAR struct rlimit *rlp)
+{
+  if (rlp == NULL)
+    {
+      set_errno(EINVAL);
+      return ERROR;
+    }
+
+  /* This is a dummy realization to make the compiler happy */
+
+  memset(rlp, 0, sizeof(*rlp));
+  return OK;
+}

libs/libc/unistd/lib_setrlimit.c

@@ -0,0 +1,50 @@
+/****************************************************************************
+ * libs/libc/unistd/lib_setrlimit.c
+ *
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.  The
+ * ASF licenses this file to you 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.
+ *
+ ****************************************************************************/
+
+/****************************************************************************
+ * Included Files
+ ****************************************************************************/
+
+#include <nuttx/config.h>
+
+#include <string.h>
+#include <errno.h>
+
+#include <sys/resource.h>
+
+/****************************************************************************
+ * Public Functions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Name: setrlimit
+ *
+ * Description:
+ *   The getrlimit() and setrlimit() system calls get and
+ *   set resource limits respectively.
+ *
+ ****************************************************************************/
+
+int setrlimit(int resource, FAR const struct rlimit *rlp)
+{
+  /* This is a dummy realization to make the compiler happy */
+
+  return OK;
+}