Ken Brown ad8d3195cc Cygwin: mmap: allow remapping part of an existing anonymous mapping ...

Previously mmap with MAP_FIXED would fail with EINVAL on an attempt to
map an address range contained in the chunk of an existing mapping.
With this commit, mmap will succeed, provided the mappings are
anonymous, the MAP_SHARED/MAP_PRIVATE flags agree, and MAP_NORESERVE
is not set for either mapping.

Addresses: https://cygwin.com/pipermail/cygwin/2024-December/256901.html
Signed-off-by: Ken Brown <kbrown@cornell.edu>

2025-01-07 16:45:19 -05:00

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Cygwin: stat: fix st_mode of fifos again

2020-05-28 13:34:19 -04:00

3.1.6

Cygwin: add microcode patch to release messages

2020-07-09 09:55:34 +02:00

3.1.7

Cygwin: main exception handler (64-bit): continue GCC exceptions

2020-08-18 07:04:25 -04:00

3.2.0

Cygwin: add "app execution aliases" treatment to release notes

2021-03-23 16:54:41 +01:00

3.3.0

Cygwin: convert malloc lock to SRWLOCK

2021-10-26 18:47:22 +02:00

3.3.2

Cygwin: pipe: Avoid false EOF while reading output of C# programs.

2021-11-08 11:06:58 +01:00

3.3.3

Cygwin: Fix release note 3.3.3.

2021-11-23 01:19:56 +09:00

3.3.4

Cygwin: select: don't report read ready on a FIFO never opened for writing

2022-10-19 08:17:50 -04:00

3.3.5

Cygwin: Fix "0x0x" in gmondump and ssp man pages

2022-04-27 11:40:09 +02:00

3.3.6

newlocale: fix crash when trying to write to __C_locale

2022-08-12 12:29:26 +02:00

3.4.0

Cygwin: add release message for commit previous commit 8d138c3f66c2

2022-12-03 16:36:49 +01:00

3.4.1

Cygwin: pipe: Fix performance degradation for non-cygwin pipe.

2022-12-09 21:01:29 +09:00

3.4.2

Cygwin: add 3.4.2 release notes

2022-12-11 11:45:36 +01:00

3.4.3

Cygwin: Update 3.4.3 release note

2022-12-16 13:36:22 +00:00

3.4.4

Cygwin: open_shared: try harder allocating a shared region

2023-01-17 18:41:10 +01:00

3.4.5

Cygwin: Add 3.4.5 release message

2023-01-19 18:33:40 +01:00

3.4.6

Cygwin: chmod: don't drop default ACEs from directory ACLs

2023-02-09 21:58:20 +01:00

3.4.7

Cygwin: Fix latest release message being in the wrong release file.

2023-07-04 16:50:37 +02:00

3.4.8

Cygwin: shared: Fix access permissions setting in open_shared().

2023-08-16 22:11:17 +09:00

3.4.9

Cygwin: document latest sys/cpuset.h fix

2023-09-01 12:42:10 +02:00

3.4.10

Cygwin: open(2): reset sparseness on O_TRUNCated files

2023-11-28 10:55:33 +01:00

3.5.0

Cygwin: fix arc4random after fork(2)

2024-01-29 13:43:36 +01:00

3.5.1

Cygwin: add release text for getgrent local SAM enumeration patch

2024-02-26 15:56:10 +01:00

3.5.2

Revert "Cygwin: glob: perform ignore_case_with_glob on input"

2024-03-18 11:10:13 +01:00

3.5.3

Cygwin: add a fake 3.5.3 release file

2024-04-03 19:47:58 +02:00

3.5.4

Cygwin: add release message for latest pipe changes

2024-08-22 21:24:35 +02:00

3.5.5

Cygwin: mmap: fix protection when unused pages are recycled

2024-12-19 10:25:53 -05:00

3.6.0

Cygwin: mmap: allow remapping part of an existing anonymous mapping

2025-01-07 16:45:19 -05:00