From: "Vladimir 'φ-coder/phcoder' Serbinenko" <phcoder@gmail.com>
To: The development of GNU GRUB <grub-devel@gnu.org>
Cc: Seth Goldberg <seth.goldberg@oracle.com>
Subject: Re: default menuentry matching similar entries is broken
Date: Sat, 03 Mar 2012 12:09:07 +0100 [thread overview]
Message-ID: <4F51FBD3.3060409@gmail.com> (raw)
In-Reply-To: <BD0AA701-E11B-4396-A7C2-8309DD7C0A61@oracle.com>
On 03.03.2012 08:33, Seth Goldberg wrote:
> Hi,
>
> This code in menu.c::menuentry_eq() looks wrong:
>
> {
> const char *ptr1, *ptr2;
> ptr1 = title;
> ptr2 = spec;
> while (1)
> {
> if (*ptr2 == '>'&& ptr2[1] != '>'&& *ptr1 == 0)
> return 1;
> if (*ptr2 == '>'&& ptr2[1] != '>')
> return 0;
> if (*ptr2 == '>')
> ptr2++;
> if (*ptr1 != *ptr2)
> return 0;
> if (*ptr1 == 0)<----
> return 1;
> ptr1++;
> ptr2++;
> }
> }
>
>
> Specifically, if there are two menuentries that differ by adding characters, this function will match the wrong one, i.e.:
Have you actually tested this? Since from the code readin just before it
we have:
if (*ptr1 != *ptr2)
return 0;
So the code you point at is trigered only if both *ptr1 and *ptr2 are 0
> Also, what's the deal with the '>' characters? What are they supposed to do? I can't seem to find the use of'>' documented anywhere.
It's for submenus:
"submenu>subsubmenu>entry"
>
> Thanks,
> --S
> _______________________________________________
> Grub-devel mailing list
> Grub-devel@gnu.org
> https://lists.gnu.org/mailman/listinfo/grub-devel
>
--
Regards
Vladimir 'φ-coder/phcoder' Serbinenko
next prev parent reply other threads:[~2012-03-03 11:09 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-03-03 7:33 default menuentry matching similar entries is broken Seth Goldberg
2012-03-03 11:09 ` Vladimir 'φ-coder/phcoder' Serbinenko [this message]
[not found] ` <31DA57F5-04BF-42DA-811D-277D5FD1E7B7@oracle.com>
2012-03-03 14:12 ` Vladimir 'φ-coder/phcoder' Serbinenko
2012-03-03 18:10 ` Andreas Vogel
2012-03-03 18:20 ` Vladimir 'φ-coder/phcoder' Serbinenko
2012-03-03 19:04 ` Andreas Vogel
2012-03-03 19:17 ` Vladimir 'φ-coder/phcoder' Serbinenko
2012-03-03 19:29 ` Andreas Vogel
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