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Date:	Fri, 27 Feb 2015 18:52:05 +0100
From:	Corinna Vinschen <corinna-cygwin AT cygwin DOT com>
To:	cygwin AT cygwin DOT com
Subject:	[ANNOUNCEMENT] (last?) TEST RELEASE: Cygwin 1.7.35-0.5
Message-Id:	<announce.20150227175205.GP11124@calimero.vinschen.de>
MIME-Version:	1.0
User-Agent:	Mutt/1.5.23 (2014-03-12)

Hi Cygwin friends and users,


I released another TEST version of the next upcoming Cygwin release.
If all is well, I hope this is the final test version before going
full ninja.

Apart from a few bug fixes, this release introduces the following
changes in terms of chmod and ACL handling.

- Change handling of group permissions if owner SID == group SID.  Now
  the group permissions don't mirror the user permissions anymore, thus
  leading to less hassle with security-conscious applications.

- Allow group SID to be the same as owner SID for "Microsoft Accounts".
  Those have the group in their user token set to the owner SID by
  default.  Drop the workaround to change their primary group to
  "Users".  It's not required anymore due to the aforementioned change.

These changes correspond with the change in 1.7.35-0.4, which is the
major change driving the above ones:

- Since Cygwin 1.7.34, chmod does not always affect the POSIX permission
  mask as returned by stat(2) or printed by ls(1), due to the improved
  POSIX ACL handling.  As a temporary workaround, chmod now checks if
  secondary groups and users in the ACL have more permissions than the
  primary group.  If so, the permissions of the secondary users and
  groups will be reduced according to the mask given by the new primary
  group permissions.  I.e, chmod 600 will remove all permissions from
  the primary group as well as all secondary user and group entries in
  the ACL.

Please report back your experience, especially if you're still suffering
from "slow startup" problems.

====================================================================
If you're not familiar with the new account information handling
introduced in Cygwin 1.7.34, I suggest to read the new documentation
at https://cygwin.com/cygwin-ug-net/ntsec.html#ntsec-mapping
====================================================================

Please also note this change of the default settings for db_home,
db_shell, and db_gecos since 1.7.35-0.3:

    db_home: /home/%U
    db_shell: /bin/bash
    db_gecos: <empty>

This means, if you don't set these values in /etc/nsswitch.conf, there's
no reason for Cygwin to access the DC via LDAP.


Other changes in this release:
==============================

- New APIs: cabsl, cimagl, creall, finitel, hypotl, sqrtl.

- Performance improvements of the new account DB handling.

- Fix /proc/cpuinfo multicore info on Intel CPUs.
  Addresses: https://cygwin.com/ml/cygwin-apps/2015-02/msg00077.html
        
- Generate unique inode number for /dev/tty under all circumstances.
  Addresses: https://cygwin.com/ml/cygwin/2015-02/msg00211.html
        
- Fix handling of PATH search in execlp and other calls to honor mount flags.
  Addresses: https://cygwin.com/ml/cygwin/2015-02/msg00119.html

- Remove a debug message accidentally printed to the terminal window
  if an application calls fcntl(F_SETFL) erroneously.

- Two regressions in 1.7.34 acl(SETACL, ...):

  - SETACL overwrote the incoming acltent_t array for bookkeeping purposes
    while iterating over its entries.  This broke reusing the acl in the
    calling application (e.g. setfacl).
    Addresses: https://cygwin.com/ml/cygwin/2015-02/msg00304.html

  - SETACL accidentally missed to grant owner FILE_WRITE_ATTRIBUTES access.
    Addresses: https://cygwin.com/ml/cygwin/2015-02/msg00457.html

- Keep SETACL from duplicating user/group deny/allow ACEs if owner SID is
  the same as group SID.

- When creating directories, keep permissions inherited from parent directory
  inheritable, per POSIX 1003.1e.

- 64 bit: Export forgotten symbol __mempcpy.
  Addresses: https://cygwin.com/ml/cygwin/2015-02/msg00394.html

- 64 bit: Avoid misbehaviour in signal mask computation.
  Addresses: https://cygwin.com/ml/cygwin/2015-02/msg00665.html

- Avoid data loss on non-blocking pipes after switching back to blocking.
  Addresses: https://cygwin.com/ml/cygwin/2015-02/msg00575.html

- Fix a potential heap corruption in mkgroup and mkpasswd when enumerating
  Unix users.

- Regression in 1.7.34:  A patch to the pty handling fixing the problem
  reported in https://cygwin.com/ml/cygwin-developers/2014-11/msg00000.html
  was incomplete and lead to undesired buffering in non-canonical mode.
  This should be fixed now.
  Addresses: https://cygwin.com/ml/cygwin/2015-02/msg00608.html

- Fix signal handling in a few functions.
  Partially addresses: https://cygwin.com/ml/cygwin/2015-02/msg00762.html


To install 32-bit Cygwin use https://cygwin.com/setup-x86.exe
To install 64 bit Cygwin use https://cygwin.com/setup-x86_64.exe

If you're already running a 32 bit version of Cygwin on 64 bit Windows
machines, you can continue to do so.  If you're planning a new install
of Cygwin on a 64 bit Windows machine, consider to use the new 64 bit
Cygwin version, unless you need certain packages not yet available in
the 64 bit release.


Have fun,
Corinna

-- 
Corinna Vinschen                  Please, send mails regarding Cygwin to
Cygwin Maintainer                 cygwin AT cygwin DOT com
Red Hat

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