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[screen-devel] [bug #38568] ForkWindow: fix race with pty creation


From: Stas Sergeev
Subject: [screen-devel] [bug #38568] ForkWindow: fix race with pty creation
Date: Fri, 22 Mar 2013 11:35:32 +0000
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:19.0) Gecko/20100101 Firefox/19.0

URL:
  <http://savannah.gnu.org/bugs/?38568>

                 Summary: ForkWindow: fix race with pty creation
                 Project: GNU Screen
            Submitted by: stsp
            Submitted on: Птн 22 Мар 2013 11:35:31
                Category: None
                Severity: 3 - Normal
                Priority: 5 - Normal
                  Status: None
                 Privacy: Public
             Assigned to: None
             Open/Closed: Open
         Discussion Lock: Any
                 Release: None
           Fixed Release: None
         Planned Release: None
           Work Required: None

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Details:

Hi.

There is a race condition exist, that is the parent
process can be too quick to do "exec" and "kill" in
a rapid succession. In this case the "kill" may close
the pty master when child have not yet opened slave.
The attached patch is a hackish attempt to protect
the pty creation with semaphore.



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File Attachments:


-------------------------------------------------------
Date: Птн 22 Мар 2013 11:35:31  Name:
0001-ForkWindow-fix-race-with-pty-creation.patch  Size: 1kB   By: stsp

<http://savannah.gnu.org/bugs/download.php?file_id=27652>

    _______________________________________________________

Reply to this item at:

  <http://savannah.gnu.org/bugs/?38568>

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