Messages in this thread |  | | Date | Sat, 11 Jul 2009 23:24:52 +0100 | | From | Alan Cox <> | | Subject | Re: possible regression with pty.c commit |
| |
On Sat, 11 Jul 2009 22:15:56 +0300 Sergey Senozhatsky <sergey.senozhatsky@mail.by> wrote:
> Hello, > commit d945cb9cce20ac7143c2de8d88b187f62db99bdc ("pty: Rework the pty layer to use the normal buffering logic") > seems to brake kdesu.
This looks like a timing bug in kdesu at first glance but it may be more complex.
> close(11) = 0
We close one side of the pty/tty pair
> write(10, "stop", 4) = 4 > write(10, "\n", 1) = 1 > fcntl64(10, F_GETFL) = 0x2 (flags O_RDWR) > read(10, 0xbf840858, 255) = -1 EIO (Input/output error) <<<<<<<<<
At this point the other side is closed, we have a hangup and the read correctly I think gets -EIO.
I will have a look at kdesu on Monday, I've got Fedora setups here so hopefully I can reproduce it simply.
|  |