Import libsparse sources

[project/make_ext4fs.git] / libsparse / simg2img.c

diff --git a/libsparse/simg2img.c b/libsparse/simg2img.c
new file mode 100644 (file)
index 0000000..95e9b5b
--- /dev/null
+++ b/libsparse/simg2img.c
@@ -0,0 +1,89 @@
+/*
+ * Copyright (C) 2010 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 <sparse/sparse.h>
+
+#include <fcntl.h>
+#include <stdbool.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <sys/types.h>
+#include <unistd.h>
+
+#ifndef O_BINARY
+#define O_BINARY 0
+#endif
+
+void usage()
+{
+  fprintf(stderr, "Usage: simg2img <sparse_image_files> <raw_image_file>\n");
+}
+
+int main(int argc, char *argv[])
+{
+       int in;
+       int out;
+       int i;
+       int ret;
+       struct sparse_file *s;
+
+       if (argc < 3) {
+               usage();
+               exit(-1);
+       }
+
+       out = open(argv[argc - 1], O_WRONLY | O_CREAT | O_TRUNC | O_BINARY, 0664);
+       if (out < 0) {
+               fprintf(stderr, "Cannot open output file %s\n", argv[argc - 1]);
+               exit(-1);
+       }
+
+       for (i = 1; i < argc - 1; i++) {
+               if (strcmp(argv[i], "-") == 0) {
+                       in = STDIN_FILENO;
+               } else {
+                       in = open(argv[i], O_RDONLY | O_BINARY);
+                       if (in < 0) {
+                               fprintf(stderr, "Cannot open input file %s\n", argv[i]);
+                               exit(-1);
+                       }
+               }
+
+               s = sparse_file_import(in, true, false);
+               if (!s) {
+                       fprintf(stderr, "Failed to read sparse file\n");
+                       exit(-1);
+               }
+
+               lseek(out, SEEK_SET, 0);
+
+               ret = sparse_file_write(s, out, false, false, false);
+               if (ret < 0) {
+                       fprintf(stderr, "Cannot write output file\n");
+                       exit(-1);
+               }
+               sparse_file_destroy(s);
+               close(in);
+       }
+
+       close(out);
+
+       exit(0);
+}
+