From: Ken Brown <kbrown@cornell.edu>
To: cygwin-patches@cygwin.com
Subject: Re: [PATCH] fhandler_pipe: add sanity limit to handle loops
Date: Thu, 23 Dec 2021 19:06:55 -0500 [thread overview]
Message-ID: <f97bba17-16ab-d7be-01f6-1c057fb5f1a5@cornell.edu> (raw)
In-Reply-To: <alpine.BSO.2.21.2112231503400.11760@resin.csoft.net>
On 12/23/2021 6:10 PM, Jeremy Drake via Cygwin-patches wrote:
> diff --git a/winsup/cygwin/fhandler_pipe.cc
> b/winsup/cygwin/fhandler_pipe.cc
> index ba6b70f55..48713a38d 100644
> --- a/winsup/cygwin/fhandler_pipe.cc
> +++ b/winsup/cygwin/fhandler_pipe.cc
> @@ -1239,7 +1239,7 @@ fhandler_pipe::get_query_hdl_per_process (WCHAR *name,
> if (!NT_SUCCESS (status))
> goto close_proc;
>
> - for (ULONG j = 0; j < phi->NumberOfHandles; j++)
> + for (ULONG j = 0; j < min(phi->NumberOfHandles, n_handle); j++)
Reading the preceding code, I don't see how n_handle could be less than
phi->NumberOfHandles. Can you explain?
> {
> /* Check for the peculiarity of cygwin read pipe */
> const ULONG access = FILE_READ_DATA | FILE_READ_EA
> @@ -1309,7 +1309,7 @@ fhandler_pipe::get_query_hdl_per_system (WCHAR *name,
> if (!NT_SUCCESS (status))
> return NULL;
>
> - for (LONG i = (LONG) shi->NumberOfHandles - 1; i >= 0; i--)
> + for (LONG i = (LONG) min(shi->NumberOfHandles, n_handle) - 1; i >= 0; i--)
Same comment.
Ken
next prev parent reply other threads:[~2021-12-24 0:06 UTC|newest]
Thread overview: 35+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-12-23 23:10 Jeremy Drake
2021-12-24 0:06 ` Ken Brown [this message]
2021-12-24 0:29 ` Jeremy Drake
2021-12-24 17:17 ` Ken Brown
2021-12-24 19:42 ` Jeremy Drake
2021-12-24 22:46 ` Ken Brown
2021-12-24 23:42 ` Jeremy Drake
2021-12-25 0:39 ` Jeremy Drake
2021-12-25 3:19 ` Takashi Yano
2021-12-25 3:47 ` Jeremy Drake
2021-12-25 4:12 ` Takashi Yano
2021-12-25 5:40 ` Jeremy Drake
2021-12-25 17:10 ` Takashi Yano
2021-12-25 17:16 ` Takashi Yano
2021-12-25 19:00 ` Marco Atzeri
2021-12-25 19:20 ` Jeremy Drake
2021-12-25 22:18 ` Ken Brown
2021-12-25 23:00 ` Jeremy Drake
2021-12-26 3:04 ` Ken Brown
2021-12-26 4:56 ` Jeremy Drake
2021-12-26 15:09 ` Ken Brown
2021-12-26 16:04 ` Ken Brown
2021-12-26 16:24 ` Ken Brown
2021-12-26 21:35 ` Jeremy Drake
2021-12-26 22:18 ` Ken Brown
2021-12-26 22:43 ` Jeremy Drake
2021-12-26 23:12 ` Ken Brown
2021-12-26 23:23 ` Jeremy Drake
2021-12-27 2:42 ` Ken Brown
2021-12-27 21:12 ` Jeremy Drake
2021-12-29 21:59 ` Ken Brown
2021-12-29 23:29 ` Jeremy Drake
2021-12-27 20:01 ` Jon Turney
2021-12-29 5:45 ` Jeremy Drake
2021-12-30 15:44 ` Jon Turney
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