コード例 #1
0
int main(int argc, char **argv)
{
    if (argc != 2) {
        fprintf(stderr, "usage: %s partition\n", argv[0]);
        return 2;
    }

    return erase_raw_partition(NULL, argv[1]);
}
コード例 #2
0
int format_unknown_device(const char *device, const char* path, const char *fs_type)
{
    LOGI("Formatting unknown device.\n");

    // device may simply be a name, like "system"
    if (device[0] != '/')
        return erase_raw_partition(device);

    // if this is SDEXT:, don't worry about it if it does not exist.
    if (0 == strcmp(path, "/sd-ext"))
    {
        struct stat st;
        Volume *vol = volume_for_path("/sd-ext");
        if (vol == NULL || 0 != stat(vol->device, &st))
        {
            ui_print("No app2sd partition found. Skipping format of /sd-ext.\n");
            return 0;
        }
    }

    if (NULL != fs_type) {
        if (strcmp("ext3", fs_type) == 0) {
            LOGI("Formatting ext3 device.\n");
            if (0 != ensure_path_unmounted(path)) {
                LOGE("Error while unmounting %s.\n", path);
                return -12;
            }
            return format_ext3_device(device);
        }

        if (strcmp("ext2", fs_type) == 0) {
            LOGI("Formatting ext2 device.\n");
            if (0 != ensure_path_unmounted(path)) {
                LOGE("Error while unmounting %s.\n", path);
                return -12;
            }
            return format_ext2_device(device);
        }
    }

    if (0 != ensure_path_mounted(path))
    {
        ui_print("Error mounting %s!\n", path);
        ui_print("Skipping format...\n");
        return 0;
    }

    static char tmp[PATH_MAX];
    sprintf(tmp, "rm -rf %s/*", path);
    __system(tmp);
    sprintf(tmp, "rm -rf %s/.*", path);
    __system(tmp);

    ensure_path_unmounted(path);
    return 0;
}
コード例 #3
0
int format_unknown_device(const char *device, const char* path, const char *fs_type)
{
    LOGI("Formatting unknown device.\n");

    if (fs_type != NULL && get_flash_type(fs_type) != UNSUPPORTED)
        return erase_raw_partition(fs_type, device);

    // if this is SDEXT:, don't worry about it if it does not exist.
    if (0 == strcmp(path, "/sd-ext"))
    {
        struct stat st;
        Volume *vol = volume_for_path("/sd-ext");
        if (vol == NULL || 0 != stat(vol->device, &st))
        {
            ui_print("No app2sd partition found. Skipping format of /sd-ext.\n");
            return 0;
        }
    }

    if (NULL != fs_type) {
        if (strcmp("ext3", fs_type) == 0) {
            LOGI("Formatting ext3 device.\n");
            if (0 != ensure_path_unmounted(path)) {
                LOGE("Error while unmounting %s.\n", path);
                return -12;
            }
            return format_ext3_device(device);
        }

        if (strcmp("ext2", fs_type) == 0) {
            LOGI("Formatting ext2 device.\n");
            if (0 != ensure_path_unmounted(path)) {
                LOGE("Error while unmounting %s.\n", path);
                return -12;
            }
            return format_ext2_device(device);
        }
    }

    if (0 != ensure_path_mounted(path))
    {
        ui_print("Error mounting %s!\n", path);
        ui_print("Skipping format...\n");
        return 0;
    }

    static char tmp[PATH_MAX];
    if (strcmp(path, "/data") == 0) {
        sprintf(tmp, "cd /data ; for f in $(ls -a | grep -v ^media$); do rm -rf $f; done");
        __system(tmp);
        // if the /data/media sdcard has already been migrated for android 4.2,
        // prevent the migration from happening again by writing the .layout_version
        struct stat st;
        if (0 == lstat("/data/media/0", &st)) {
            char* layout_version = "2";
            FILE* f = fopen("/data/.layout_version", "wb");
            if (NULL != f) {
                fwrite(layout_version, 1, 2, f);
                fclose(f);
            }
            else {
                LOGI("error opening /data/.layout_version for write.\n");
            }
        }
        else {
            LOGI("/data/media/0 not found. migration may occur.\n");
        }
    }
    else {
        sprintf(tmp, "rm -rf %s/*", path);
        __system(tmp);
        sprintf(tmp, "rm -rf %s/.*", path);
        __system(tmp);
    }

    ensure_path_unmounted(path);
    return 0;
}
コード例 #4
0
int format_unknown_device(const char *device, const char* path, const char *fs_type)
{
    LOGI("Formatting unknown device.\n");

    if (fs_type != NULL && get_flash_type(fs_type) != UNSUPPORTED)
        return erase_raw_partition(fs_type, device);

    // if this is SDEXT:, don't worry about it if it does not exist.
    if (0 == strcmp(path, "/sd-ext"))
    {
        struct stat st;
        Volume *vol = volume_for_path("/sd-ext");
        if (vol == NULL || 0 != stat(vol->device, &st))
        {
            ui_print("No app2sd partition found. Skipping format of /sd-ext.\n");
            return 0;
        }
    }

    if (NULL != fs_type) {
        if (strcmp("ext3", fs_type) == 0) {
            LOGI("Formatting ext3 device.\n");
            if (0 != ensure_path_unmounted(path)) {
                LOGE("Error while unmounting %s.\n", path);
                return -12;
            }
            return format_ext3_device(device);
        }

        if (strcmp("ext2", fs_type) == 0) {
            LOGI("Formatting ext2 device.\n");
            if (0 != ensure_path_unmounted(path)) {
                LOGE("Error while unmounting %s.\n", path);
                return -12;
            }
            return format_ext2_device(device);
        }
    }

    if (0 != ensure_path_mounted(path))
    {
        ui_print("Error mounting %s!\n", path);
        ui_print("Skipping format...\n");
        return 0;
    }

    static char tmp[PATH_MAX];
    if (strcmp(path, "/data") == 0) {
        sprintf(tmp, "cd /data ; for f in $(ls -a | grep -v ^media$); do rm -rf $f; done");
        __system(tmp);
    }
    else {
        sprintf(tmp, "rm -rf %s/*", path);
        __system(tmp);
        sprintf(tmp, "rm -rf %s/.*", path);
        __system(tmp);
    }

    ensure_path_unmounted(path);
    return 0;
}
コード例 #5
0
int format_volume(const char* volume) {
    Volume* v = volume_for_path(volume);
    if (v == NULL) {
        // silent failure for sd-ext
        if (strcmp(volume, "/sd-ext") == 0)
            return -1;
        LOGE("unknown volume \"%s\"\n", volume);
        return -1;
    }
    if (strcmp(v->fs_type, "ramdisk") == 0) {
        // you can't format the ramdisk.
        LOGE("can't format_volume \"%s\"", volume);
        return -1;
    }
    if (strcmp(v->mount_point, volume) != 0) {
#if 0
        LOGE("can't give path \"%s\" to format_volume\n", volume);
        return -1;
#endif
        return format_unknown_device(v->device, volume, NULL);
    }

    if (ensure_path_unmounted(volume) != 0) {
        LOGE("format_volume failed to unmount \"%s\"\n", v->mount_point);
        return -1;
    }

    if (strcmp(v->fs_type, "yaffs2") == 0 || strcmp(v->fs_type, "mtd") == 0) {
        mtd_scan_partitions();
        const MtdPartition* partition = mtd_find_partition_by_name(v->device);
        if (partition == NULL) {
            LOGE("format_volume: no MTD partition \"%s\"\n", v->device);
            return -1;
        }

        MtdWriteContext *write = mtd_write_partition(partition);
        if (write == NULL) {
            LOGW("format_volume: can't open MTD \"%s\"\n", v->device);
            return -1;
        } else if (mtd_erase_blocks(write, -1) == (off_t) -1) {
            LOGW("format_volume: can't erase MTD \"%s\"\n", v->device);
            mtd_write_close(write);
            return -1;
        } else if (mtd_write_close(write)) {
            LOGW("format_volume: can't close MTD \"%s\"\n", v->device);
            return -1;
        }
        return 0;
    }

    if (strcmp(v->fs_type, "emmc") == 0) {
        return erase_raw_partition(v->device);
    }

    if (strcmp(v->fs_type, "ext4") == 0) {
        reset_ext4fs_info();
        int result = make_ext4fs(v->device, NULL, NULL, 0, 0, 0);
        if (result != 0) {
            LOGE("format_volume: make_extf4fs failed on %s\n", v->device);
            return -1;
        }
        return 0;
    }

#if 0
    LOGE("format_volume: fs_type \"%s\" unsupported\n", v->fs_type);
    return -1;
#endif
    return format_unknown_device(v->device, volume, v->fs_type);
}