svn commit: r363813 - in head: lib/libc/gen share/man/man4 sys/kern sys/sys

[Konstantin Belousov]

Author: kib
Date: Mon Aug  3 22:13:02 2020
New Revision: 363813
URL: https://svnweb.freebsd.org/changeset/base/363813

Log:
  Add SOL_LOCAL symbolic constant for unix socket option level.
  
  The constant seems to exists on MacOS X >= 10.8.
  
  Requested by:	swills
  Reviewed by:	allanjude, kevans
  Sponsored by:	The FreeBSD Foundation
  MFC after:	1 week
  Differential revision:	https://reviews.freebsd.org/D25933

Modified:
  head/lib/libc/gen/getpeereid.c
  head/share/man/man4/unix.4
  head/sys/kern/uipc_usrreq.c
  head/sys/sys/un.h

Modified: head/lib/libc/gen/getpeereid.c
==============================================================================
--- head/lib/libc/gen/getpeereid.c	Mon Aug  3 22:12:18 2020	(r363812)
+++ head/lib/libc/gen/getpeereid.c	Mon Aug  3 22:13:02 2020	(r363813)
@@ -47,7 +47,7 @@ getpeereid(int s, uid_t *euid, gid_t *egid)
 	int error;
 
 	xuclen = sizeof(xuc);
-	error = _getsockopt(s, 0, LOCAL_PEERCRED, &xuc, &xuclen);
+	error = _getsockopt(s, SOL_LOCAL, LOCAL_PEERCRED, &xuc, &xuclen);
 	if (error != 0)
 		return (error);
 	if (xuc.cr_version != XUCRED_VERSION) {

Modified: head/share/man/man4/unix.4
==============================================================================
--- head/share/man/man4/unix.4	Mon Aug  3 22:12:18 2020	(r363812)
+++ head/share/man/man4/unix.4	Mon Aug  3 22:13:02 2020	(r363813)
@@ -28,7 +28,7 @@
 .\"     @(#)unix.4	8.1 (Berkeley) 6/9/93
 .\" $FreeBSD$
 .\"
-.Dd August 19, 2018
+.Dd August 3, 2020
 .Dt UNIX 4
 .Os
 .Sh NAME
@@ -195,7 +195,9 @@ The sending process could have exited and its process 
 reused for a new process.
 .Sh SOCKET OPTIONS
 .Tn UNIX
-domain sockets support a number of socket options which can be set with
+domain sockets support a number of socket options for the options level
+.Dv SOL_LOCAL ,
+which can be set with
 .Xr setsockopt 2
 and tested with
 .Xr getsockopt 2 :

Modified: head/sys/kern/uipc_usrreq.c
==============================================================================
--- head/sys/kern/uipc_usrreq.c	Mon Aug  3 22:12:18 2020	(r363812)
+++ head/sys/kern/uipc_usrreq.c	Mon Aug  3 22:13:02 2020	(r363813)
@@ -1470,7 +1470,7 @@ uipc_ctloutput(struct socket *so, struct sockopt *sopt
 	struct xucred xu;
 	int error, optval;
 
-	if (sopt->sopt_level != 0)
+	if (sopt->sopt_level != SOL_LOCAL)
 		return (EINVAL);
 
 	unp = sotounpcb(so);

Modified: head/sys/sys/un.h
==============================================================================
--- head/sys/sys/un.h	Mon Aug  3 22:12:18 2020	(r363812)
+++ head/sys/sys/un.h	Mon Aug  3 22:13:02 2020	(r363813)
@@ -62,6 +62,8 @@ struct sockaddr_un {
 
 #if __BSD_VISIBLE
 
+#define	SOL_LOCAL		0	/* Options for local socket */
+
 /* Socket options. */
 #define	LOCAL_PEERCRED		1	/* retrieve peer credentials */
 #define	LOCAL_CREDS		2	/* pass credentials to receiver */