inode.c (8bb2b247124ba6093455d4aef26743b1bef27bc5) inode.c (1f7d1e77419050831a905353683807fa69a26625)
1/*
2 * linux/fs/ext4/inode.c
3 *
4 * Copyright (C) 1992, 1993, 1994, 1995
5 * Remy Card (card@masi.ibp.fr)
6 * Laboratoire MASI - Institut Blaise Pascal
7 * Universite Pierre et Marie Curie (Paris VI)
8 *

--- 346 unchanged lines hidden (view full) ---

355 i_block + direct_blocks +
356 indirect_blocks + double_blocks, inode->i_ino);
357 }
358 if (boundary)
359 *boundary = final - 1 - (i_block & (ptrs - 1));
360 return n;
361}
362
1/*
2 * linux/fs/ext4/inode.c
3 *
4 * Copyright (C) 1992, 1993, 1994, 1995
5 * Remy Card (card@masi.ibp.fr)
6 * Laboratoire MASI - Institut Blaise Pascal
7 * Universite Pierre et Marie Curie (Paris VI)
8 *

--- 346 unchanged lines hidden (view full) ---

355 i_block + direct_blocks +
356 indirect_blocks + double_blocks, inode->i_ino);
357 }
358 if (boundary)
359 *boundary = final - 1 - (i_block & (ptrs - 1));
360 return n;
361}
362
363static int __ext4_check_blockref(const char *function, unsigned int line,
364 struct inode *inode,
365 __le32 *p, unsigned int max)
366{
367 struct ext4_super_block *es = EXT4_SB(inode->i_sb)->s_es;
368 __le32 *bref = p;
369 unsigned int blk;
370
371 while (bref < p+max) {
372 blk = le32_to_cpu(*bref++);
373 if (blk &&
374 unlikely(!ext4_data_block_valid(EXT4_SB(inode->i_sb),
375 blk, 1))) {
376 es->s_last_error_block = cpu_to_le64(blk);
377 ext4_error_inode(inode, function, line, blk,
378 "invalid block");
379 return -EIO;
380 }
381 }
382 return 0;
383}
384
385
386#define ext4_check_indirect_blockref(inode, bh) \
387 __ext4_check_blockref(__func__, __LINE__, inode, \
388 (__le32 *)(bh)->b_data, \
389 EXT4_ADDR_PER_BLOCK((inode)->i_sb))
390
391#define ext4_check_inode_blockref(inode) \
392 __ext4_check_blockref(__func__, __LINE__, inode, \
393 EXT4_I(inode)->i_data, \
394 EXT4_NDIR_BLOCKS)
395
396/**
397 * ext4_get_branch - read the chain of indirect blocks leading to data
398 * @inode: inode in question
399 * @depth: depth of the chain (1 - direct pointer, etc.)
400 * @offsets: offsets of pointers in inode/indirect blocks
401 * @chain: place to store the result
402 * @err: here we store the error value
403 *

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5005 (S_ISLNK(inode->i_mode) &&
5006 !ext4_inode_is_fast_symlink(inode)))
5007 /* Validate extent which is part of inode */
5008 ret = ext4_ext_check_inode(inode);
5009 } else if (S_ISREG(inode->i_mode) || S_ISDIR(inode->i_mode) ||
5010 (S_ISLNK(inode->i_mode) &&
5011 !ext4_inode_is_fast_symlink(inode))) {
5012 /* Validate block references which are part of inode */
363/**
364 * ext4_get_branch - read the chain of indirect blocks leading to data
365 * @inode: inode in question
366 * @depth: depth of the chain (1 - direct pointer, etc.)
367 * @offsets: offsets of pointers in inode/indirect blocks
368 * @chain: place to store the result
369 * @err: here we store the error value
370 *

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4972 (S_ISLNK(inode->i_mode) &&
4973 !ext4_inode_is_fast_symlink(inode)))
4974 /* Validate extent which is part of inode */
4975 ret = ext4_ext_check_inode(inode);
4976 } else if (S_ISREG(inode->i_mode) || S_ISDIR(inode->i_mode) ||
4977 (S_ISLNK(inode->i_mode) &&
4978 !ext4_inode_is_fast_symlink(inode))) {
4979 /* Validate block references which are part of inode */
5013 ret = ext4_check_inode_blockref(inode);
4980 ret = ext4_ind_check_inode(inode);
5014 }
5015 if (ret)
5016 goto bad_inode;
5017
5018 if (S_ISREG(inode->i_mode)) {
5019 inode->i_op = &ext4_file_inode_operations;
5020 inode->i_fop = &ext4_file_operations;
5021 ext4_set_aops(inode);

--- 903 unchanged lines hidden --- 		4981 }
4982 if (ret)
4983 goto bad_inode;
4984
4985 if (S_ISREG(inode->i_mode)) {
4986 inode->i_op = &ext4_file_inode_operations;
4987 inode->i_fop = &ext4_file_operations;
4988 ext4_set_aops(inode);

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