72 lines
2.3 KiB
C
72 lines
2.3 KiB
C
/*
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* Copyright (C) 2014 The Android Open Source Project
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
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* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
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* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#define _LARGEFILE64_SOURCE
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#include <fcntl.h>
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#include <string.h>
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#include <f2fs_fs.h>
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#include <f2fs_format_utils.h>
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#include <sparse/sparse.h>
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struct selabel_handle;
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#include "make_f2fs.h"
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extern void flush_sparse_buffs();
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extern void init_sparse_file(unsigned int block_size, int64_t len);
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extern void finalize_sparse_file(int fd);
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extern struct f2fs_configuration *f2fs_config;
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extern int dlopenf2fs();
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static void reset_f2fs_info() {
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memset(f2fs_config, 0, sizeof(*f2fs_config));
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f2fs_config->fd = -1;
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f2fs_config->kd = -1;
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}
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int make_f2fs_sparse_fd(int fd, long long len,
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const char *mountpoint, struct selabel_handle *sehnd)
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{
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if (dlopenf2fs() < 0) {
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return -1;
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}
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reset_f2fs_info();
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f2fs_init_configuration(f2fs_config);
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len &= ~((__u64)(F2FS_BLKSIZE - 1));
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f2fs_config->total_sectors = len / f2fs_config->sector_size;
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f2fs_config->start_sector = 0;
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init_sparse_file(F2FS_BLKSIZE, len);
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f2fs_format_device();
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finalize_sparse_file(fd);
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flush_sparse_buffs();
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return 0;
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}
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