git: 677465720ad1 - stable/14 - getsockopt.2: Add SO_SPLICE source socket read and socket close behavior

The branch stable/14 has been updated by kbowling:

URL: https://cgit.FreeBSD.org/src/commit/?id=677465720ad10f24de178c8bba0285cb3f3c23fe

commit 677465720ad10f24de178c8bba0285cb3f3c23fe
Author:     Kevin Bowling <kbowling@FreeBSD.org>
AuthorDate: 2025-07-26 21:18:47 +0000
Commit:     Kevin Bowling <kbowling@FreeBSD.org>
CommitDate: 2025-07-29 03:40:26 +0000

    getsockopt.2: Add SO_SPLICE source socket read and socket close behavior
    
    Add select(2), poll(2), or kqueue(2) source socket semantics and close
    behavior.
    
    Reported by:    Udip Pant <upant@netflix.com>
    Reviewed by:    manpages (ziaee), markj
    Obtained from:  OpenBSD
    Sponsored by:   Netflix
    Differential Revision:  https://reviews.freebsd.org/D51547
    
    (cherry picked from commit 122b2a3530f8baab56d196b51724cc3ddd38abd2)
---
 lib/libc/sys/getsockopt.2 | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/lib/libc/sys/getsockopt.2 b/lib/libc/sys/getsockopt.2
index f36a9fe7baf8..b9c6589d07ac 100644
--- a/lib/libc/sys/getsockopt.2
+++ b/lib/libc/sys/getsockopt.2
@@ -595,6 +595,15 @@ specified amount of time has elapsed since the initial call to
 If
 .Fa sp_fd
 is -1, the socket will be unspliced immediately.
+A successful
+.Xr select 2 ,
+.Xr poll 2 ,
+or
+.Xr kqueue 2
+operation testing the ability to read from the source socket indicates
+that the splicing has terminated and at least one byte is available for
+reading.
+When one of the sockets gets closed, splicing ends.
 .Pp
 When passed to
 .Fn getsockopt ,