1 files changed, 113 insertions, 0 deletions
diff --git a/vold/format.c b/vold/format.c
new file mode 100755
index 0000000..dd0515c
--- /dev/null
+++ b/vold/format.c
@@ -0,0 +1,113 @@
+
+/*
+ * Copyright (C) 2008 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 <errno.h>
+
+#include <linux/fs.h>
+
+#include "vold.h"
+#include "blkdev.h"
+#include "format.h"
+#include "diskmbr.h"
+#include "logwrapper.h"
+
+static char MKDOSFS_PATH[] = "/system/bin/mkdosfs";
+static char MKE2FS_PATH[] = "/system/bin/mke2fs";
+
+int format_partition(blkdev_t *part, char *type)
+{
+    char *devpath;
+    int rc = -EINVAL;
+
+    devpath = blkdev_get_devpath(part);
+
+    if (!strcmp(type, FORMAT_TYPE_FAT32)) {
+        char *args[7];
+        args[0] = MKDOSFS_PATH;
+        args[1] = "-F 32";
+        args[2] = "-c 32";
+        args[3] = "-n 2";
+        args[4] = "-O android";
+        args[5] = devpath;
+        args[6] = NULL;
+        rc = logwrap(6, args);
+    } else {
+        char *args[7];
+        args[0] = MKE2FS_PATH;
+        args[1] = "-b 4096";
+        args[2] = "-m 1";
+        args[3] = "-L android";
+        args[4] = "-v";
+        args[5] = devpath;
+        args[6] = NULL;
+        rc = logwrap(6, args);
+    }
+ 
+    free(devpath);
+
+    if (rc == 0) {
+        LOG_VOL("Filesystem formatted OK");
+        return 0;
+    } else {
+        LOGE("Format failed (unknokwn exit code %d)", rc);
+        return -EIO;
+    }
+    return 0;
+}
+
+int initialize_mbr(blkdev_t *disk)
+{
+    int fd, rc;
+    unsigned char block[512];
+    struct dos_partition part;
+    char *devpath;
+
+    devpath = blkdev_get_devpath(disk);
+
+    memset(&part, 0, sizeof(part));
+    part.dp_flag = 0x80;
+    part.dp_typ = 0xc;
+    part.dp_start = ((1024 * 64) / 512) + 1;
+    part.dp_size = disk->nr_sec - part.dp_start;
+
+    memset(block, 0, sizeof(block));
+    block[0x1fe] = 0x55;
+    block[0x1ff] = 0xaa;
+
+    dos_partition_enc(block + DOSPARTOFF, &part);
+
+    if ((fd = open(devpath, O_RDWR)) < 0) {
+        LOGE("Error opening disk file (%s)", strerror(errno));
+        return -errno;
+    }
+    free(devpath);
+
+    if (write(fd, block, sizeof(block)) < 0) {
+        LOGE("Error writing MBR (%s)", strerror(errno));
+        close(fd);
+        return -errno;
+    }
+
+    if (ioctl(fd, BLKRRPART, NULL) < 0) {
+        LOGE("Error re-reading partition table (%s)", strerror(errno));
+        close(fd);
+        return -errno;
+    }
+    close(fd);
+    return 0;
+}