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jfs: ensure symlinks are NUL-terminated

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This is an alternate fix for a bug reported and fixed by Duane Griffin.

Signed-off-by: Dave Kleikamp <shaggy@linux.vnet.ibm.com>
Reported-by: Duane Griffin <duaneg@dghda.com>
This commit is contained in:
Dave Kleikamp 2008-12-16 10:21:34 -06:00
parent a3dd15444b
commit d69e83d99c
1 changed files with 7 additions and 1 deletions
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8
fs/jfs/inode.c
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@ -59,8 +59,14 @@ struct inode *jfs_iget(struct super_block *sb, unsigned long ino)
if (inode->i_size >= IDATASIZE) {
inode->i_op = &page_symlink_inode_operations;
inode->i_mapping->a_ops = &jfs_aops;
} else
} else {
inode->i_op = &jfs_symlink_inode_operations;
/*
* The inline data should be null-terminated, but
* don't let on-disk corruption crash the kernel
*/
JFS_IP(inode)->i_inline[inode->i_size] = '\0';
}
} else {
inode->i_op = &jfs_file_inode_operations;
init_special_inode(inode, inode->i_mode, inode->i_rdev);