109 lines
2.3 KiB
C
109 lines
2.3 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* Copyright (C), 2021, Coolpad Group Limited.
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* Created by Yue Hu <huyue2@yulong.com>
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*/
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#ifdef WITH_ANDROID
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#include <stdio.h>
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#include <sys/stat.h>
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#include "erofs/block_list.h"
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#define EROFS_MODNAME "erofs block_list"
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#include "erofs/print.h"
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static FILE *block_list_fp;
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int erofs_droid_blocklist_fopen(void)
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{
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block_list_fp = fopen(cfg.block_list_file, "w");
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if (!block_list_fp)
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return -1;
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return 0;
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}
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void erofs_droid_blocklist_fclose(void)
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{
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if (!block_list_fp)
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return;
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fclose(block_list_fp);
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block_list_fp = NULL;
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}
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static void blocklist_write(const char *path, erofs_blk_t blk_start,
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erofs_blk_t nblocks, bool first_extent,
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bool last_extent)
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{
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const char *fspath = erofs_fspath(path);
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if (first_extent) {
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fprintf(block_list_fp, "/%s", cfg.mount_point);
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if (fspath[0] != '/')
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fprintf(block_list_fp, "/");
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fprintf(block_list_fp, "%s", fspath);
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}
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if (nblocks == 1)
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fprintf(block_list_fp, " %u", blk_start);
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else
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fprintf(block_list_fp, " %u-%u", blk_start,
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blk_start + nblocks - 1);
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if (last_extent)
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fprintf(block_list_fp, "\n");
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}
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void erofs_droid_blocklist_write_extent(struct erofs_inode *inode,
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erofs_blk_t blk_start,
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erofs_blk_t nblocks, bool first_extent,
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bool last_extent)
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{
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if (!block_list_fp || !cfg.mount_point)
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return;
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if (!nblocks) {
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if (last_extent)
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fprintf(block_list_fp, "\n");
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return;
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}
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blocklist_write(inode->i_srcpath, blk_start, nblocks, first_extent,
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last_extent);
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}
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void erofs_droid_blocklist_write(struct erofs_inode *inode,
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erofs_blk_t blk_start, erofs_blk_t nblocks)
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{
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if (!block_list_fp || !cfg.mount_point || !nblocks)
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return;
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blocklist_write(inode->i_srcpath, blk_start, nblocks,
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true, !inode->idata_size);
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}
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void erofs_droid_blocklist_write_tail_end(struct erofs_inode *inode,
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erofs_blk_t blkaddr)
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{
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if (!block_list_fp || !cfg.mount_point)
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return;
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/* XXX: a bit hacky.. may need a better approach */
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if (S_ISDIR(inode->i_mode) || S_ISLNK(inode->i_mode))
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return;
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/* XXX: another hack, which means it has been outputed before */
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if (erofs_blknr(inode->i_size)) {
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if (blkaddr == NULL_ADDR)
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fprintf(block_list_fp, "\n");
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else
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fprintf(block_list_fp, " %u\n", blkaddr);
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return;
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}
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if (blkaddr != NULL_ADDR)
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blocklist_write(inode->i_srcpath, blkaddr, 1, true, true);
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}
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#endif
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