[SCM] GNU Mach branch, master, updated. v1.8-280-g2a64847

[Samuel Thibault]

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- Log -----------------------------------------------------------------
commit 2a648479d659e37faa86e6a9c0214add000afe91
Author: Samuel Thibault <samuel.thibault@ens-lyon.org>
Date:   Mon May 24 14:11:01 2021 +0200

    Revert "vm_map: Allow passing the name of a memory object"
    
    This reverts commit af9f471b500bcd0c1023259c7577e074fe6d3ee5.

commit 08dac1991732db78ce85af228c7a7ae3e7438b35
Author: Sergey Bugaev <bugaevc@gmail.com>
Date:   Sun May 23 01:41:12 2021 +0200

    vm_map: Fix proxy object protection check
    
    * If not making a copy, don't cap protection to the limit enforced
      by the proxy, and only require read access. This fixes mapping
      parts of read-only files MAP_ANON + PROT_READ|PROT_WRITE.
    
    * Instead of silently capping protection, return KERN_PROTECTION_FAILURE
      to the caller like the other vm_*() routines do.

-----------------------------------------------------------------------

Summary of changes:
 vm/vm_user.c | 21 ++++++++++++++-------
 1 file changed, 14 insertions(+), 7 deletions(-)


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