git: c4269e63ecf3 - main - exit(3): clarify how to obtain full exit status of the exited process

The branch main has been updated by kib:

URL: https://cgit.FreeBSD.org/src/commit/?id=c4269e63ecf301306a6176b9fe9002c4c2265695

commit c4269e63ecf301306a6176b9fe9002c4c2265695
Author:     Konstantin Belousov <kib@FreeBSD.org>
AuthorDate: 2024-07-25 17:28:45 +0000
Commit:     Konstantin Belousov <kib@FreeBSD.org>
CommitDate: 2024-07-29 23:57:34 +0000

    exit(3): clarify how to obtain full exit status of the exited process
    
    Sponsored by:   The FreeBSD Foundation
    MFC after:      3 days
---
 lib/libc/stdlib/exit.3 | 14 ++++++++++++++
 1 file changed, 14 insertions(+)

diff --git a/lib/libc/stdlib/exit.3 b/lib/libc/stdlib/exit.3
index b117e77c9e3b..bfb14c5c9f83 100644
--- a/lib/libc/stdlib/exit.3
+++ b/lib/libc/stdlib/exit.3
@@ -102,6 +102,20 @@ values described in
 .Xr sysexits 3
 may be used to provide more information to the parent process.
 .Pp
+The complete
+.Fa status
+value is avaliable as
+.Va si_status
+member of the
+.Vt siginfo_t
+structure, to the
+.Xr wait6 2
+and
+.Xr sigwaitinfo 2
+callers, and
+.Va SIGCHLD
+signal handlers.
+.Pp
 Calls to the
 .Fn exit
 function are serialized.