Messages in this thread | | | Subject | Re: AUDIT: copy_from_user is a deathtrap. | Date | Sun, 19 May 2002 13:22:12 +0100 (BST) | From | Alan Cox <> |
| |
> Looking at generic_file_write(), it ignore the count returned by > copy_from_user and always commit a write for the whole requested > count, regardless of how much could actually be read from userland.
It has to commit the write for the entire block. That is needed to get the disk sectors correct versus another reader. The error reporting may not be berfect however
Alan - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
| |