9caab76c6b
The new wipe option to the vold format command will invoke BLKDISCARD on the partition before invoking newfs_msdos. This will be used whenever a full wipe of the device is wanted, as this is more secure than just doing newfs_msdos. Bug: 9392982 Change-Id: Ie106f1b9cc70abc61206006d1821641c27c7ccae
29 lines
819 B
C
29 lines
819 B
C
/*
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* Copyright (C) 2013 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 <sys/ioctl.h>
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#include <linux/fs.h>
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unsigned int get_blkdev_size(int fd)
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{
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unsigned int nr_sec;
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if ( (ioctl(fd, BLKGETSIZE, &nr_sec)) == -1) {
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nr_sec = 0;
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}
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return nr_sec;
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}
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