On Wed, Jan 23, 2008 at 11:00:57PM +0000, Oleg Strikov wrote:
> Incorrect behavior of grub_file_open () function in e.g. loop context:
>
> char *file_names[] =
> {
> "(hd0,1)/file1", //file do not exist
> "(hd0,1)/file2" //file exist
> };
> grub_file_t file;
> int i;
> for (i = 0; i < 2; i++)
> {
> file = grub_file_open (file_names[i]);
> if (file) {...}
> }
>
> There, we should get positive return in the second case (i == 1), but
> grub_file_open() returns 0.
>
> Using gdb i've found that this problem connected with incorrect errno check
> in /kern/file.c
>
> Let's look:
>
> >grub_file_t
> >grub_file_open (const char *name)
> >{
> > grub_device_t device;
> > grub_file_t file = 0;
> > char *device_name;
> > char *file_name;
>
> > device_name = grub_file_get_device_name (name);
> > if (grub_errno)
> > return 0;
>
> But, we DO NOT set grub_errno to 0 at the begining of the function, thats
> why next loop round it always returns 0
Fixed, thank you.
--
Robert Millan
<GPLv2> I know my rights; I want my phone call!
<DRM> What use is a phone call… if you are unable to speak?
(as seen on /.)
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