zte's code,first commit

Change-Id: I9a04da59e459a9bc0d67f101f700d9d7dc8d681b
diff --git a/ap/build/uClibc/libc/sysdeps/linux/common/ulimit.c b/ap/build/uClibc/libc/sysdeps/linux/common/ulimit.c
new file mode 100644
index 0000000..8be4a37
--- /dev/null
+++ b/ap/build/uClibc/libc/sysdeps/linux/common/ulimit.c
@@ -0,0 +1,48 @@
+/* vi: set sw=4 ts=4: */
+/*
+ * Copyright (C) 2000-2006 Erik Andersen <andersen@uclibc.org>
+ *
+ * Licensed under the LGPL v2.1, see the file COPYING.LIB in this tarball.
+ */
+
+#include <sys/syscall.h>
+
+#include <stdarg.h>
+#include <unistd.h>
+#include <ulimit.h>
+#include <sys/resource.h>
+
+
+long int ulimit(int cmd, ...)
+{
+	va_list va;
+	struct rlimit limit;
+	long int result = -1;
+	va_start (va, cmd);
+	switch (cmd) {
+		/* Get limit on file size.  */
+		case UL_GETFSIZE:
+			if (getrlimit(RLIMIT_FSIZE, &limit) == 0)
+				result =  limit.rlim_cur / 512; /* bytes to 512 byte blocksize */
+			break;
+		/* Set limit on file size.  */
+		case UL_SETFSIZE:
+			result = va_arg (va, long int);
+			if ((rlim_t) result > RLIM_INFINITY / 512) {
+				limit.rlim_cur = RLIM_INFINITY;
+				limit.rlim_max = RLIM_INFINITY;
+			} else {
+				limit.rlim_cur = result * 512;
+				limit.rlim_max = result * 512;
+			}
+			result = setrlimit(RLIMIT_FSIZE, &limit);
+			break;
+		case __UL_GETOPENMAX:
+			result = sysconf(_SC_OPEN_MAX);
+			break;
+		default:
+			__set_errno(EINVAL);
+	}
+	va_end (va);
+	return result;
+}