| |
| /* |
| * 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/newfs_msdos"; |
| 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"; |
| if ((part->nr_sec * 512) <= (unsigned int) (1024*1024*1024*2)) |
| args[2] = "16"; |
| else |
| args[2] = "32"; |
| |
| args[3] = "-O"; |
| args[4] = "android"; |
| args[5] = devpath; |
| args[6] = NULL; |
| rc = logwrap(7, args, 1); |
| } 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, 1); |
| } |
| |
| 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; |
| } |