OS-2870 lx brand add stubs for *xattr()

usr/src/lib/brand/lx/lx_brand/Makefile.com

@@ -61,7 +61,8 @@ COBJS	=	clock.o			\
 		sysv_ipc.o		\
 		time.o			\
 		truncate.o		\
-		wait.o
+		wait.o			\
+		xattr.o
 
 CMNOBJS =	lx_signum.o
 ASOBJS	=	lx_handler.o lx_runexe.o lx_crt.o

usr/src/lib/brand/lx/lx_brand/common/lx_brand.c

@@ -1142,15 +1142,15 @@ static struct lx_sysent sysents[] = {
 	{"setxattr",	NULL,		NOSYS_NO_EQUIV,	0},	/* 226 */
 	{"lsetxattr",	NULL,		NOSYS_NO_EQUIV,	0},	/* 227 */
 	{"fsetxattr",	NULL,		NOSYS_NO_EQUIV,	0},	/* 228 */
-	{"getxattr",	NULL,		NOSYS_NO_EQUIV,	0},	/* 229 */
-	{"lgetxattr",	NULL,		NOSYS_NO_EQUIV,	0},	/* 230 */
-	{"fgetxattr",	NULL,		NOSYS_NO_EQUIV,	0},	/* 231 */
-	{"listxattr",	NULL,		NOSYS_NO_EQUIV,	0},	/* 232 */
-	{"llistxattr",	NULL,		NOSYS_NO_EQUIV,	0},	/* 233 */
-	{"flistxattr",	NULL,		NOSYS_NO_EQUIV,	0},	/* 234 */
-	{"removexattr",	NULL,		NOSYS_NO_EQUIV,	0},	/* 235 */
-	{"lremovexattr", NULL,		NOSYS_NO_EQUIV,	0},	/* 236 */
-	{"fremovexattr", NULL,		NOSYS_NO_EQUIV,	0},	/* 237 */
+	{"getxattr",	lx_xattr4,	0,		4},	/* 229 */
+	{"lgetxattr",	lx_xattr4,	0,		4},	/* 230 */
+	{"fgetxattr",	lx_xattr4,	0,		4},	/* 231 */
+	{"listxattr",	lx_xattr3,	0,		3},	/* 232 */
+	{"llistxattr",	lx_xattr3,	0,		3},	/* 233 */
+	{"flistxattr",	lx_xattr3,	0,		3},	/* 234 */
+	{"removexattr",	lx_xattr2,	0,		2},	/* 235 */
+	{"lremovexattr", lx_xattr2,	0,		2},	/* 236 */
+	{"fremovexattr", lx_xattr2,	0,		2},	/* 237 */
 	{"tkill",	lx_tkill,	0,		2},	/* 238 */
 	{"sendfile64",	lx_sendfile64,	0,		4},	/* 239 */
 	{"futex",	lx_futex,	EBP_HAS_ARG6,	6},	/* 240 */

usr/src/lib/brand/lx/lx_brand/common/xattr.c

@@ -0,0 +1,57 @@
+/*
+ * CDDL HEADER START
+ *
+ * The contents of this file are subject to the terms of the
+ * Common Development and Distribution License (the "License").
+ * You may not use this file except in compliance with the License.
+ *
+ * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
+ * or http://www.opensolaris.org/os/licensing.
+ * See the License for the specific language governing permissions
+ * and limitations under the License.
+ *
+ * When distributing Covered Code, include this CDDL HEADER in each
+ * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
+ * If applicable, add the following below this CDDL HEADER, with the
+ * fields enclosed by brackets "[]" replaced with your own identifying
+ * information: Portions Copyright [yyyy] [name of copyright owner]
+ *
+ * CDDL HEADER END
+ */
+
+/*
+ * Copyright 2014 Joyent, Inc.  All rights reserved.
+ */
+
+/*
+ * *xattr() family of functions.
+ *
+ * These are currently unimplemented.  We return EOPNOTSUPP for now, rather
+ * than using NOSYS_NO_EQUIV to avoid unwanted stderr output from ls(1).
+ */
+
+#include <errno.h>
+#include <sys/types.h>
+#include <sys/lx_types.h>
+#include <sys/lx_syscall.h>
+
+int
+lx_xattr2(uintptr_t p1, uintptr_t p2)
+{
+
+	return (-EOPNOTSUPP);
+}
+
+int
+lx_xattr3(uintptr_t p1, uintptr_t p2, uintptr_t p3)
+{
+
+	return (-EOPNOTSUPP);
+}
+
+int
+lx_xattr4(uintptr_t p1, uintptr_t p2, uintptr_t p3, uintptr_t p4)
+{
+
+	return (-EOPNOTSUPP);
+}

usr/src/lib/brand/lx/lx_brand/sys/lx_syscall.h

@@ -240,6 +240,10 @@ extern int lx_sched_setscheduler(uintptr_t, uintptr_t, uintptr_t);
 extern int lx_sched_get_priority_min(uintptr_t);
 extern int lx_sched_get_priority_max(uintptr_t);
 
+extern int lx_xattr2(uintptr_t, uintptr_t);
+extern int lx_xattr3(uintptr_t, uintptr_t, uintptr_t);
+extern int lx_xattr4(uintptr_t, uintptr_t, uintptr_t, uintptr_t);
+
 extern int lx_keyctl(void);
 
 extern int lx_ipc(uintptr_t, uintptr_t, uintptr_t, uintptr_t, uintptr_t);