58 строки
1.2 KiB
C
58 строки
1.2 KiB
C
// SPDX-License-Identifier: GPL-2.0
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/*
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* file.c
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*
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* Copyright (c) 1999 Al Smith
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*
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* Portions derived from work (c) 1995,1996 Christian Vogelgsang.
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*/
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#include <linux/buffer_head.h>
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#include "efs.h"
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int efs_get_block(struct inode *inode, sector_t iblock,
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struct buffer_head *bh_result, int create)
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{
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int error = -EROFS;
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long phys;
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if (create)
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return error;
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if (iblock >= inode->i_blocks) {
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#ifdef DEBUG
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/*
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* i have no idea why this happens as often as it does
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*/
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pr_warn("%s(): block %d >= %ld (filesize %ld)\n",
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__func__, block, inode->i_blocks, inode->i_size);
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#endif
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return 0;
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}
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phys = efs_map_block(inode, iblock);
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if (phys)
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map_bh(bh_result, inode->i_sb, phys);
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return 0;
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}
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int efs_bmap(struct inode *inode, efs_block_t block) {
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if (block < 0) {
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pr_warn("%s(): block < 0\n", __func__);
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return 0;
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}
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/* are we about to read past the end of a file ? */
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if (!(block < inode->i_blocks)) {
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#ifdef DEBUG
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/*
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* i have no idea why this happens as often as it does
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*/
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pr_warn("%s(): block %d >= %ld (filesize %ld)\n",
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__func__, block, inode->i_blocks, inode->i_size);
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#endif
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return 0;
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}
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return efs_map_block(inode, block);
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}
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