qa: add test for opendir/readdir/closedir in newlib

qa/lib/newlib/102-files.c

@@ -0,0 +1,51 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <dirent.h>
+#include <errno.h>
+
+int
+main(int argc, char **argv)
+{
+	int i = 0;
+	DIR *dirp;
+	struct dirent *dp;
+
+	dirp = opendir("/");
+	if(dirp != NULL)
+		printf("opendir(/): done\n");
+	else
+		printf("opendir(/): failed\n");
+
+	while (dirp) {
+		errno = 0;
+		if ((dp = readdir(dirp)) != NULL) {
+			if (strcmp(dp->d_name, "README.md") == 0) {
+				if(dp->d_type == DT_REG){
+					++i;
+					printf("FOUND! ");
+				}
+			}
+			if (strcmp(dp->d_name, "sys") == 0) {
+				if(dp->d_type == DT_DIR){
+					++i;
+					printf("FOUND! ");
+				}
+			}
+			printf("%s: %s\n", dp->d_name, dp->d_type == DT_DIR ? "directory" : "regular");
+			if(i == 2){
+				closedir(dirp);
+				return 0;
+			}
+		} else {
+			printf("readdir returned NULL\n");
+			if (errno == 0) {
+				closedir(dirp);
+				return 1;
+			}
+			closedir(dirp);
+			return 2;
+		}
+	}
+	return 3;
+}

qa/lib/newlib/build.json

@@ -37,6 +37,7 @@
 			"030-pause.c",
 			"100-files.c",
 			"101-files.c",
+			"102-files.c",
 			"200-signals.c",
 			"201-signals.c",
 			"202-signals.c",
@@ -81,8 +82,10 @@
 			"000-hello.c",
 			"010-fork.c",
 			"020-waitpid.c",
+			"030-pause.c",
 			"100-files.c",
 			"101-files.c",
+			"102-files.c",
 			"200-signals.c",
 			"201-signals.c",
 			"202-signals.c",