upload android base code part6

android/system/extras/f2fs_utils/make_f2fs_main.c

@@ -0,0 +1,91 @@
+/*
+ * Copyright (C) 2014 The Android Open Source Project
+ *
+ * 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 <fcntl.h>
+#include <libgen.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+
+#if defined(__linux__)
+#include <linux/fs.h>
+#elif defined(__APPLE__) && defined(__MACH__)
+#include <sys/disk.h>
+#endif
+
+#include "make_f2fs.h"
+
+#ifndef _WIN32 /* O_BINARY is windows-specific flag */
+#define O_BINARY 0
+#endif
+
+static void usage(char *path)
+{
+	fprintf(stderr, "%s -l <len>\n", basename(path));
+	fprintf(stderr, "    <filename>\n");
+}
+
+int main(int argc, char **argv)
+{
+	int opt;
+	const char *filename = NULL;
+	int fd;
+	int exitcode;
+	long long len;
+	while ((opt = getopt(argc, argv, "l:")) != -1) {
+		switch (opt) {
+		case 'l':
+			len = atoll(optarg);
+			break;
+		default: /* '?' */
+			usage(argv[0]);
+			exit(EXIT_FAILURE);
+		}
+	}
+
+
+	if (optind >= argc) {
+		fprintf(stderr, "Expected filename after options\n");
+		usage(argv[0]);
+		exit(EXIT_FAILURE);
+	}
+
+	filename = argv[optind++];
+
+	if (optind < argc) {
+		fprintf(stderr, "Unexpected argument: %s\n", argv[optind]);
+		usage(argv[0]);
+		exit(EXIT_FAILURE);
+	}
+
+	if (strcmp(filename, "-")) {
+		fd = open(filename, O_WRONLY | O_CREAT | O_TRUNC | O_BINARY, 0644);
+		if (fd < 0) {
+			perror("open");
+			return EXIT_FAILURE;
+		}
+	} else {
+		fd = STDOUT_FILENO;
+	}
+
+        exitcode = make_f2fs_sparse_fd(fd, len, NULL, NULL);
+
+	close(fd);
+	if (exitcode && strcmp(filename, "-"))
+		unlink(filename);
+	return exitcode;
+}