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57 lines
1.2 KiB
57 lines
1.2 KiB
// 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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