From ace9429bb58fd418f0c81d4c2835699bddf6bde6 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Thu, 11 Apr 2024 10:27:49 +0200 Subject: Adding upstream version 6.6.15. Signed-off-by: Daniel Baumann --- fs/efs/file.c | 57 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 57 insertions(+) create mode 100644 fs/efs/file.c (limited to 'fs/efs/file.c') diff --git a/fs/efs/file.c b/fs/efs/file.c new file mode 100644 index 0000000000..9e641da6fa --- /dev/null +++ b/fs/efs/file.c @@ -0,0 +1,57 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * file.c + * + * Copyright (c) 1999 Al Smith + * + * Portions derived from work (c) 1995,1996 Christian Vogelgsang. + */ + +#include +#include "efs.h" + +int efs_get_block(struct inode *inode, sector_t iblock, + struct buffer_head *bh_result, int create) +{ + int error = -EROFS; + long phys; + + if (create) + return error; + if (iblock >= inode->i_blocks) { +#ifdef DEBUG + /* + * i have no idea why this happens as often as it does + */ + pr_warn("%s(): block %d >= %ld (filesize %ld)\n", + __func__, block, inode->i_blocks, inode->i_size); +#endif + return 0; + } + phys = efs_map_block(inode, iblock); + if (phys) + map_bh(bh_result, inode->i_sb, phys); + return 0; +} + +int efs_bmap(struct inode *inode, efs_block_t block) { + + if (block < 0) { + pr_warn("%s(): block < 0\n", __func__); + return 0; + } + + /* are we about to read past the end of a file ? */ + if (!(block < inode->i_blocks)) { +#ifdef DEBUG + /* + * i have no idea why this happens as often as it does + */ + pr_warn("%s(): block %d >= %ld (filesize %ld)\n", + __func__, block, inode->i_blocks, inode->i_size); +#endif + return 0; + } + + return efs_map_block(inode, block); +} -- cgit v1.2.3