From d7f715c0299a0f71c1b07fdda456264d8ad99928 Mon Sep 17 00:00:00 2001
From: David Carlier <devnexen@gmail.com>
Date: Sun, 6 Feb 2022 15:49:24 +0000
Subject: [PATCH 1/3] shutil Lib enabling sendfile on solaris systems as it
 supports copy between file descriptors.

---
 Lib/shutil.py | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/Lib/shutil.py b/Lib/shutil.py
index 949e024853c1d2..9704df918bce50 100644
--- a/Lib/shutil.py
+++ b/Lib/shutil.py
@@ -42,7 +42,8 @@
 COPY_BUFSIZE = 1024 * 1024 if _WINDOWS else 64 * 1024
 # This should never be removed, see rationale in:
 # https://bugs.python.org/issue43743#msg393429
-_USE_CP_SENDFILE = hasattr(os, "sendfile") and sys.platform.startswith("linux")
+# senfile on solaris systems is capable of copying on regular file descriptors.
+_USE_CP_SENDFILE = hasattr(os, "sendfile") and (sys.platform.startswith("linux") or sys.platform.startswith("sunos"))
 _HAS_FCOPYFILE = posix and hasattr(posix, "_fcopyfile")  # macOS
 
 # CMD defaults in Windows 10
@@ -106,7 +107,7 @@ def _fastcopy_fcopyfile(fsrc, fdst, flags):
 def _fastcopy_sendfile(fsrc, fdst):
     """Copy data from one regular mmap-like fd to another by using
     high-performance sendfile(2) syscall.
-    This should work on Linux >= 2.6.33 only.
+    This should work on Linux >= 2.6.33 and Solaris systems.
     """
     # Note: copyfileobj() is left alone in order to not introduce any
     # unexpected breakage. Possible risks by using zero-copy calls

From d651b5c679556aa257ced96e7a28de4a6b2ae169 Mon Sep 17 00:00:00 2001
From: "blurb-it[bot]" <43283697+blurb-it[bot]@users.noreply.github.com>
Date: Sun, 6 Feb 2022 15:53:32 +0000
Subject: [PATCH 2/3] =?UTF-8?q?=F0=9F=93=9C=F0=9F=A4=96=20Added=20by=20blu?=
 =?UTF-8?q?rb=5Fit.?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 .../NEWS.d/next/Library/2022-02-06-15-53-30.bpo-46658.oRp0C-.rst | 1 +
 1 file changed, 1 insertion(+)
 create mode 100644 Misc/NEWS.d/next/Library/2022-02-06-15-53-30.bpo-46658.oRp0C-.rst

diff --git a/Misc/NEWS.d/next/Library/2022-02-06-15-53-30.bpo-46658.oRp0C-.rst b/Misc/NEWS.d/next/Library/2022-02-06-15-53-30.bpo-46658.oRp0C-.rst
new file mode 100644
index 00000000000000..7076f849dc6ec8
--- /dev/null
+++ b/Misc/NEWS.d/next/Library/2022-02-06-15-53-30.bpo-46658.oRp0C-.rst
@@ -0,0 +1 @@
+Enabling ``os.sendfile`` on shlib on Solaris based systems.
\ No newline at end of file

From db0b714a8ed3822f70a8a6be0129d3c9d445430f Mon Sep 17 00:00:00 2001
From: David Carlier <devnexen@gmail.com>
Date: Sun, 13 Feb 2022 06:46:50 +0000
Subject: [PATCH 3/3] changes from feedback

---
 Lib/shutil.py                                                   | 2 +-
 .../next/Library/2022-02-06-15-53-30.bpo-46658.oRp0C-.rst       | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/Lib/shutil.py b/Lib/shutil.py
index 9704df918bce50..66be758757b0ea 100644
--- a/Lib/shutil.py
+++ b/Lib/shutil.py
@@ -43,7 +43,7 @@
 # This should never be removed, see rationale in:
 # https://bugs.python.org/issue43743#msg393429
 # senfile on solaris systems is capable of copying on regular file descriptors.
-_USE_CP_SENDFILE = hasattr(os, "sendfile") and (sys.platform.startswith("linux") or sys.platform.startswith("sunos"))
+_USE_CP_SENDFILE = hasattr(os, "sendfile") and sys.platform.startswith(("linux", "sunos"))
 _HAS_FCOPYFILE = posix and hasattr(posix, "_fcopyfile")  # macOS
 
 # CMD defaults in Windows 10
diff --git a/Misc/NEWS.d/next/Library/2022-02-06-15-53-30.bpo-46658.oRp0C-.rst b/Misc/NEWS.d/next/Library/2022-02-06-15-53-30.bpo-46658.oRp0C-.rst
index 7076f849dc6ec8..c29457c80859ea 100644
--- a/Misc/NEWS.d/next/Library/2022-02-06-15-53-30.bpo-46658.oRp0C-.rst
+++ b/Misc/NEWS.d/next/Library/2022-02-06-15-53-30.bpo-46658.oRp0C-.rst
@@ -1 +1 @@
-Enabling ``os.sendfile`` on shlib on Solaris based systems.
\ No newline at end of file
+Enable use of :func:`os.sendfile` in :mod:`shlib` on Solaris based systems.