lists  /  announce  owl-users  owl-dev  john-users  john-dev  passwdqc-users  yescrypt  popa3d-users  /  oss-security  kernel-hardening  musl  sabotage  tlsify  passwords  /  crypt-dev  xvendor  /  Bugtraq  Full-Disclosure  linux-kernel  linux-netdev  linux-ext4  linux-hardening  linux-cve-announce  PHC 
Open Source and information security mailing list archives
Hash Suite: Windows password security audit tool. GUI, reports in PDF.
[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]
Date:	Mon, 23 Apr 2012 17:23:22 -0500
From:	Eric Sandeen <>
To:	Bernd Schubert <>
CC:,,, Fan Yong <>,, Andreas Dilger <>
Subject: Re: [PATCH 5 2/4] Return 32/64-bit dir name hash according to usage

On 4/23/12 3:52 PM, Bernd Schubert wrote:
> On 04/23/2012 10:37 PM, Eric Sandeen wrote:


> diff --git a/fs/ext4/dir.c b/fs/ext4/dir.c
> index b867862..3a4988e2 100644
> --- a/fs/ext4/dir.c
> +++ b/fs/ext4/dir.c
> @@ -363,7 +363,7 @@ loff_t ext4_dir_llseek(struct file *file, loff_t
> offset, int origin)
>  		goto out_err;
>  	if (!dx_dir) {
> -		if (offset > inode->i_sb->s_maxbytes)
> +		if (offset > i_size_read(inode))
>  			goto out_err;
>  	} else if (offset > ext4_get_htree_eof(file))
>  		goto out_err;

I'm curious about the above as well as:

        case SEEK_END:
                if (unlikely(offset > 0))
                        goto out_err; /* not supported for directories */

The previous .llseek handler, and the generic handler for other filesystems, allow seeking past the end of the dir AFAICT.  (not sure why you'd want to, but I don't see that you'd get an error back).

Is there a reason to uniquely exclude it in ext4?  Does that line up with POSIX?


To unsubscribe from this list: send the line "unsubscribe linux-ext4" in
the body of a message to
More majordomo info at

Powered by blists - more mailing lists