Re: [PATCH] lseek: tighten error checking and allow negative offsets for SEEK_END

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



On Thu, Mar 02, 2017 at 03:37:03PM +0100, Uwe Kleine-König wrote:
> Signed-off-by: Uwe Kleine-König <u.kleine-koenig@xxxxxxxxxxxxxx>
> ---
>  fs/fs.c | 6 ++++--
>  1 file changed, 4 insertions(+), 2 deletions(-)

Applied, thanks

Sascha

> 
> diff --git a/fs/fs.c b/fs/fs.c
> index e7b696591433..1901c94ad1ea 100644
> --- a/fs/fs.c
> +++ b/fs/fs.c
> @@ -910,6 +910,8 @@ loff_t lseek(int fildes, loff_t offset, int whence)
>  	case SEEK_SET:
>  		if (f->size != FILE_SIZE_STREAM && offset > f->size)
>  			goto out;
> +		if (offset < 0)
> +			goto out;
>  		pos = offset;
>  		break;
>  	case SEEK_CUR:
> @@ -918,9 +920,9 @@ loff_t lseek(int fildes, loff_t offset, int whence)
>  		pos = f->pos + offset;
>  		break;
>  	case SEEK_END:
> -		if (offset)
> +		if (offset > 0)
>  			goto out;
> -		pos = f->size;
> +		pos = f->size + offset;
>  		break;
>  	default:
>  		goto out;
> -- 
> 2.11.0
> 
> 
> _______________________________________________
> barebox mailing list
> barebox@xxxxxxxxxxxxxxxxxxx
> http://lists.infradead.org/mailman/listinfo/barebox

-- 
Pengutronix e.K.                           |                             |
Industrial Linux Solutions                 | http://www.pengutronix.de/  |
Peiner Str. 6-8, 31137 Hildesheim, Germany | Phone: +49-5121-206917-0    |
Amtsgericht Hildesheim, HRA 2686           | Fax:   +49-5121-206917-5555 |

_______________________________________________
barebox mailing list
barebox@xxxxxxxxxxxxxxxxxxx
http://lists.infradead.org/mailman/listinfo/barebox




[Index of Archives]     [Linux Embedded]     [Linux USB Devel]     [Linux Audio Users]     [Yosemite News]     [Linux Kernel]     [Linux SCSI]     [XFree86]

  Powered by Linux