[Toybox] XBSPATH() bug

[Ashwini Sharma]

Yep! I had a case that file belongs to some other user.... /dev/sda1 on my
system.

may be doing FACCESSAT would be better.

-Ashwini


On Fri, Apr 26, 2013 at 7:26 PM, Rob Landley <rob at landley.net> wrote:

> On 04/25/2013 12:12:20 AM, Ashwini Sharma wrote:
>
>> Hi Rob,
>>
>> Calling xabspath() function with "exact=1", makes sure that the last path
>> component exists.
>>
>> I think the decision making statement
>>
>> fd = openat(dirfd, s, 0);
>> if (fd == -1 && (exact || todo || errno != ENOENT)) goto error;
>>
>> will jump to error:, when openat fails, though the 's' is the last
>> component in the path.
>>
>> Failing to open the last component with errno != ENOENT doesn't mean the
>> component doesn't exist.
>>
>
> Ah, you're referring to a file that exists but belongs to another user, or
> is chmod 000 or similar? So the last test should be faccessat(F_OK)?
>
>
>   The check should be modified to see if the fail happens at last component
>> or otherwise.
>>
>
> I don't know what you mean by that. Above is my guess?
>
> Rob
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