Messages in this thread Patch in this message |  | | | From | "Duane Griffin" <> | | Date | Thu, 11 Dec 2008 22:23:59 +0000 | | Subject | [PATCH, v2] ext2: ensure link targets are NUL-terminated |
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Ensure link targets are NUL-terminated, even if corrupted on-disk.
Signed-off-by: Duane Griffin <duaneg@dghda.com> --- V2: terminate when the link is read instead of every time it is followed, as suggested by Dave Kleikamp.
diff --git a/fs/ext2/inode.c b/fs/ext2/inode.c index 7658b33..9bacf35 100644 --- a/fs/ext2/inode.c +++ b/fs/ext2/inode.c @@ -1286,9 +1286,10 @@ struct inode *ext2_iget (struct super_block *sb, unsigned long ino) else inode->i_mapping->a_ops = &ext2_aops; } else if (S_ISLNK(inode->i_mode)) { - if (ext2_inode_is_fast_symlink(inode)) + if (ext2_inode_is_fast_symlink(inode)) { inode->i_op = &ext2_fast_symlink_inode_operations; - else { + ((char *) ei->i_data)[inode->i_size] = '\0'; + } else { inode->i_op = &ext2_symlink_inode_operations; if (test_opt(inode->i_sb, NOBH)) inode->i_mapping->a_ops = &ext2_nobh_aops; -- "I never could learn to drink that blood and call it wine" - Bob Dylan
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