113 lines
2.7 KiB
C
Executable File
113 lines
2.7 KiB
C
Executable File
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/*
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* Copyright (C) 2008 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include <fcntl.h>
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#include <errno.h>
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#include <linux/fs.h>
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#include "vold.h"
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#include "blkdev.h"
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#include "format.h"
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#include "diskmbr.h"
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#include "logwrapper.h"
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static char MKDOSFS_PATH[] = "/system/bin/mkdosfs";
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static char MKE2FS_PATH[] = "/system/bin/mke2fs";
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int format_partition(blkdev_t *part, char *type)
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{
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char *devpath;
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int rc = -EINVAL;
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devpath = blkdev_get_devpath(part);
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if (!strcmp(type, FORMAT_TYPE_FAT32)) {
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char *args[6];
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args[0] = MKDOSFS_PATH;
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args[1] = "-c 32";
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args[2] = "-n 2";
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args[3] = "-O android";
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args[4] = devpath;
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args[5] = NULL;
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rc = logwrap(5, args);
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} else {
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char *args[7];
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args[0] = MKE2FS_PATH;
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args[1] = "-b 4096";
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args[2] = "-m 1";
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args[3] = "-L android";
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args[4] = "-v";
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args[5] = devpath;
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args[6] = NULL;
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rc = logwrap(6, args);
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}
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free(devpath);
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if (rc == 0) {
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LOG_VOL("Filesystem formatted OK");
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return 0;
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} else {
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LOGE("Format failed (unknokwn exit code %d)", rc);
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return -EIO;
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}
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return 0;
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}
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int initialize_mbr(blkdev_t *disk)
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{
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int fd, rc;
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unsigned char block[512];
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struct dos_partition part;
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char *devpath;
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devpath = blkdev_get_devpath(disk);
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memset(&part, 0, sizeof(part));
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part.dp_flag = 0x80;
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part.dp_typ = 0xc;
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part.dp_start = ((1024 * 64) / 512) + 1;
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part.dp_size = disk->nr_sec - part.dp_start;
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memset(block, 0, sizeof(block));
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block[0x1fe] = 0x55;
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block[0x1ff] = 0xaa;
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dos_partition_enc(block + DOSPARTOFF, &part);
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if ((fd = open(devpath, O_RDWR)) < 0) {
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LOGE("Error opening disk file (%s)", strerror(errno));
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return -errno;
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}
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free(devpath);
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if (write(fd, block, sizeof(block)) < 0) {
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LOGE("Error writing MBR (%s)", strerror(errno));
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close(fd);
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return -errno;
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}
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if (ioctl(fd, BLKRRPART, NULL) < 0) {
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LOGE("Error re-reading partition table (%s)", strerror(errno));
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close(fd);
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return -errno;
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}
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close(fd);
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return 0;
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}
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