PSARC 2010/235 POSIX 1003.1-2008 *at(2) syscalls

6910251 need support for all POSIX.1-2008 *at(2) syscalls
6964835 mknod(2) auditing omits the pathname for invalid arguments

15 files changed, 220 insertions, 267 deletions

diff --git a/usr/src/lib/libc/amd64/Makefile b/usr/src/lib/libc/amd64/Makefile
index 2176c1da01..8ece7c4add 100644
--- a/usr/src/lib/libc/amd64/Makefile
+++ b/usr/src/lib/libc/amd64/Makefile
@@ -18,7 +18,6 @@
 #
 # CDDL HEADER END
 #
-
 #
 # Copyright (c) 2004, 2010, Oracle and/or its affiliates. All rights reserved.
 #
@@ -173,7 +172,6 @@ COMSYSOBJS=			\
 	alarm.o			\
 	brk.o			\
 	chdir.o			\
-	chmod.o			\
 	chroot.o		\
 	cladm.o			\
 	close.o			\
@@ -181,7 +179,6 @@ COMSYSOBJS=			\
 	exit.o			\
 	facl.o			\
 	fchdir.o		\
-	fchmod.o		\
 	fchroot.o		\
 	fdsync.o		\
 	fpathconf.o		\
@@ -206,14 +203,11 @@ COMSYSOBJS=			\
 	ioctl.o			\
 	kaio.o			\
 	kill.o			\
-	link.o			\
 	llseek.o		\
 	lseek.o			\
 	mmapobjsys.o		\
 	memcntl.o		\
 	mincore.o		\
-	mkdir.o			\
-	mknod.o			\
 	mmap.o			\
 	modctl.o		\
 	mount.o			\
@@ -236,7 +230,6 @@ COMSYSOBJS=			\
 	putpmsg.o		\
 	pwrite.o		\
 	read.o			\
-	readlink.o		\
 	readv.o			\
 	resolvepath.o		\
 	seteguid.o		\
@@ -253,7 +246,6 @@ COMSYSOBJS=			\
 	statfs.o		\
 	statvfs.o		\
 	stty.o			\
-	symlink.o		\
 	sync.o			\
 	sysconfig.o		\
 	sysfs.o			\
@@ -770,6 +762,7 @@ PORTSYS=			\
 	access.o		\
 	acctctl.o		\
 	bsd_signal.o		\
+	chmod.o			\
 	chown.o			\
 	corectl.o		\
 	exacctsys.o		\
@@ -782,13 +775,15 @@ PORTSYS=			\
 	inst_sync.o		\
 	issetugid.o		\
 	label.o			\
-	libc_link.o		\
+	link.o			\
 	lockf.o			\
 	lwp.o			\
 	lwp_cond.o		\
 	lwp_rwlock.o		\
 	lwp_sigmask.o		\
 	meminfosys.o		\
+	mkdir.o			\
+	mknod.o			\
 	msgsys.o		\
 	nfssys.o		\
 	open.o			\
@@ -797,6 +792,7 @@ PORTSYS=			\
 	ppriv.o			\
 	psetsys.o		\
 	rctlsys.o		\
+	readlink.o		\
 	rename.o		\
 	sbrk.o			\
 	semsys.o		\
@@ -809,6 +805,7 @@ PORTSYS=			\
 	sigpending.o		\
 	sigstack.o		\
 	stat.o			\
+	symlink.o		\
 	tasksys.o		\
 	time.o			\
 	time_util.o		\
diff --git a/usr/src/lib/libc/common/sys/mknod.s b/usr/src/lib/libc/common/sys/mknod.s
deleted file mode 100644
index 0d7733e7ff..0000000000
--- a/usr/src/lib/libc/common/sys/mknod.s
+++ /dev/null
@@ -1,43 +0,0 @@
-/*
- * 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 (c) 1988 AT&T	*/
-/*	  All Rights Reserved	*/
-
-
-/*
- * Copyright 2004 Sun Microsystems, Inc.  All rights reserved.
- * Use is subject to license terms.
- */
-
-	.file	"mknod.s"
-
-/* C library -- mknod						*/
-/* int mknod(const char *path, mode_t mode, dev_t dev);		*/
-
-#include <sys/asm_linkage.h>
-
-	ANSI_PRAGMA_WEAK(mknod,function)
-
-#include "SYS.h"
-
-	SYSCALL_RVAL1(mknod)
-	RETC
-	SET_SIZE(mknod)
diff --git a/usr/src/lib/libc/common/sys/readlink.s b/usr/src/lib/libc/common/sys/readlink.s
deleted file mode 100644
index 2ec6e5a886..0000000000
--- a/usr/src/lib/libc/common/sys/readlink.s
+++ /dev/null
@@ -1,45 +0,0 @@
-/*
- * 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 (c) 1988 AT&T	*/
-/*	  All Rights Reserved	*/
-
-
-/*
- * Copyright 2004 Sun Microsystems, Inc.  All rights reserved.
- * Use is subject to license terms.
- */
-
-	.file	"readlink.s"
-
-/*
- * C library -- readlink
- * ssize_t readlink(const char *path, char *buf, size_t bufsize);
- */
-
-#include <sys/asm_linkage.h>
-
-	ANSI_PRAGMA_WEAK(readlink,function)
-
-#include "SYS.h"
-
-	SYSCALL_RVAL1(readlink)
-	RET
-	SET_SIZE(readlink)
diff --git a/usr/src/lib/libc/common/sys/symlink.s b/usr/src/lib/libc/common/sys/symlink.s
deleted file mode 100644
index d46e48f1c4..0000000000
--- a/usr/src/lib/libc/common/sys/symlink.s
+++ /dev/null
@@ -1,43 +0,0 @@
-/*
- * 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 (c) 1988 AT&T	*/
-/*	  All Rights Reserved	*/
-
-
-/*
- * Copyright 2004 Sun Microsystems, Inc.  All rights reserved.
- * Use is subject to license terms.
- */
-
-	.file	"symlink.s"
-
-/* C library -- symlink						*/
-/* int symlink(const char *name1, const char *name2)		*/
-
-#include <sys/asm_linkage.h>
-
-	ANSI_PRAGMA_WEAK(symlink,function)
-
-#include "SYS.h"
-
-	SYSCALL_RVAL1(symlink)
-	RETC
-	SET_SIZE(symlink)
diff --git a/usr/src/lib/libc/i386/Makefile.com b/usr/src/lib/libc/i386/Makefile.com
index 50d06a4e4f..55a006e315 100644
--- a/usr/src/lib/libc/i386/Makefile.com
+++ b/usr/src/lib/libc/i386/Makefile.com
@@ -18,7 +18,6 @@
 #
 # CDDL HEADER END
 #
-
 #
 # Copyright (c) 2004, 2010, Oracle and/or its affiliates. All rights reserved.
 #
@@ -195,7 +194,6 @@ COMSYSOBJS=			\
 	alarm.o			\
 	brk.o			\
 	chdir.o			\
-	chmod.o			\
 	chroot.o		\
 	cladm.o			\
 	close.o			\
@@ -203,7 +201,6 @@ COMSYSOBJS=			\
 	exit.o			\
 	facl.o			\
 	fchdir.o		\
-	fchmod.o		\
 	fchroot.o		\
 	fdsync.o		\
 	fpathconf.o		\
@@ -228,14 +225,11 @@ COMSYSOBJS=			\
 	ioctl.o			\
 	kaio.o			\
 	kill.o			\
-	link.o			\
 	llseek.o		\
 	lseek.o			\
 	mmapobjsys.o		\
 	memcntl.o		\
 	mincore.o		\
-	mkdir.o			\
-	mknod.o			\
 	mmap.o			\
 	modctl.o		\
 	mount.o			\
@@ -258,7 +252,6 @@ COMSYSOBJS=			\
 	putpmsg.o		\
 	pwrite.o		\
 	read.o			\
-	readlink.o		\
 	readv.o			\
 	resolvepath.o		\
 	seteguid.o		\
@@ -275,7 +268,6 @@ COMSYSOBJS=			\
 	statfs.o		\
 	statvfs.o		\
 	stty.o			\
-	symlink.o		\
 	sync.o			\
 	sysconfig.o		\
 	sysfs.o			\
@@ -808,6 +800,7 @@ PORTSYS=			\
 	access.o		\
 	acctctl.o		\
 	bsd_signal.o		\
+	chmod.o			\
 	chown.o			\
 	corectl.o		\
 	exacctsys.o		\
@@ -820,13 +813,15 @@ PORTSYS=			\
 	inst_sync.o		\
 	issetugid.o		\
 	label.o			\
-	libc_link.o		\
+	link.o			\
 	lockf.o			\
 	lwp.o			\
 	lwp_cond.o		\
 	lwp_rwlock.o		\
 	lwp_sigmask.o		\
 	meminfosys.o		\
+	mkdir.o			\
+	mknod.o			\
 	msgsys.o		\
 	nfssys.o		\
 	open.o			\
@@ -835,6 +830,7 @@ PORTSYS=			\
 	ppriv.o			\
 	psetsys.o		\
 	rctlsys.o		\
+	readlink.o		\
 	rename.o		\
 	sbrk.o			\
 	semsys.o		\
@@ -847,6 +843,7 @@ PORTSYS=			\
 	sigpending.o		\
 	sigstack.o		\
 	stat.o			\
+	symlink.o		\
 	tasksys.o		\
 	time.o			\
 	time_util.o		\
diff --git a/usr/src/lib/libc/port/gen/mkfifo.c b/usr/src/lib/libc/port/gen/mkfifo.c
index eb73e03184..ac2897c92a 100644
--- a/usr/src/lib/libc/port/gen/mkfifo.c
+++ b/usr/src/lib/libc/port/gen/mkfifo.c
@@ -20,28 +20,31 @@
  */
 
 /*
- * Copyright 2008 Sun Microsystems, Inc.  All rights reserved.
- * Use is subject to license terms.
+ * Copyright (c) 1989, 2010, Oracle and/or its affiliates. All rights reserved.
  */
 
 /*	Copyright (c) 1988 AT&T	*/
 /*	  All Rights Reserved  	*/
 
-#pragma ident	"%Z%%M%	%I%	%E% SMI"
-
 /*
  * mkfifo(3c) - create a named pipe (FIFO). This code provides
  * a POSIX mkfifo function.
- *
  */
 
-#pragma weak _mkfifo = mkfifo
-
 #include "lint.h"
 #include <sys/types.h>
 #include <sys/stat.h>
 
 int
+mkfifoat(int fd, const char *path, mode_t mode)
+{
+	mode &= 0777;		/* only allow file access permissions */
+	mode |= S_IFIFO;	/* creating a FIFO	*/
+	return (mknodat(fd, path, mode, 0));
+}
+
+#pragma weak _mkfifo = mkfifo
+int
 mkfifo(const char *path, mode_t mode)
 {
 	mode &= 0777;		/* only allow file access permissions */
diff --git a/usr/src/lib/libc/port/mapfile-vers b/usr/src/lib/libc/port/mapfile-vers
index a3dae49082..ed3f10dd05 100644
--- a/usr/src/lib/libc/port/mapfile-vers
+++ b/usr/src/lib/libc/port/mapfile-vers
@@ -146,6 +146,7 @@ $endif
 	err;
 	errx;
 	faccessat;
+	fchmodat;
 	fdatasync;
 	fgetattr;
 	forkallx;
@@ -155,8 +156,12 @@ $endif
 	htonl;
 	htonll;
 	htons;
+	linkat;
 	lio_listio;
+	mkdirat;
 	mkdtemp;
+	mkfifoat;
+	mknodat;
 	mkstemps;
 	mmapobj;
 	mq_close;
@@ -187,6 +192,7 @@ $endif
 	pthread_mutexattr_getrobust;
 	pthread_mutexattr_setrobust;
 	pthread_mutex_consistent;
+	readlinkat;
 	sched_getparam;
 	sched_get_priority_max;
 	sched_get_priority_min;
@@ -215,6 +221,7 @@ $endif
 	sigwaitinfo;
 	strnlen;
 	strsep;
+	symlinkat;
 	thr_keycreate_once;
 	timer_create;
 	timer_delete;
diff --git a/usr/src/lib/libc/common/sys/mkdir.s b/usr/src/lib/libc/port/sys/chmod.c
index 1efbfc9081..90266e55b1 100644
--- a/usr/src/lib/libc/common/sys/mkdir.s
+++ b/usr/src/lib/libc/port/sys/chmod.c
@@ -18,26 +18,43 @@
  *
  * CDDL HEADER END
  */
-/*	Copyright (c) 1988 AT&T	*/
-/*	  All Rights Reserved	*/
-
 
 /*
- * Copyright 2004 Sun Microsystems, Inc.  All rights reserved.
- * Use is subject to license terms.
+ * Copyright (c) 2010, Oracle and/or its affiliates. All rights reserved.
  */
 
-	.file	"mkdir.s"
-
-/* C library -- mkdir						*/
-/* int mkdir (const char *path, mode_t mode);			*/
-
-#include <sys/asm_linkage.h>
-
-	ANSI_PRAGMA_WEAK(mkdir,function)
-
-#include "SYS.h"
-
-	SYSCALL_RVAL1(mkdir)
-	RET
-	SET_SIZE(mkdir)
+#include "lint.h"
+#include <stdio.h>
+#include <unistd.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <sys/syscall.h>
+#include <sys/fcntl.h>
+
+int
+fchmodat(int fd, const char *path, mode_t mode, int flag)
+{
+	return (syscall(SYS_fchmodat, fd, path, mode, flag));
+}
+
+#pragma weak _chmod = chmod
+int
+chmod(const char *path, mode_t mode)
+{
+#if defined(_RETAIN_OLD_SYSCALLS)
+	return (syscall(SYS_chmod, path, mode));
+#else
+	return (fchmodat(AT_FDCWD, path, mode, 0));
+#endif
+}
+
+#pragma weak _fchmod = fchmod
+int
+fchmod(int fd, mode_t mode)
+{
+#if defined(_RETAIN_OLD_SYSCALLS)
+	return (syscall(SYS_fchmod, fd, mode));
+#else
+	return (fchmodat(fd, NULL, mode, 0));
+#endif
+}
diff --git a/usr/src/lib/libc/port/sys/libc_link.c b/usr/src/lib/libc/port/sys/link.c
index f0f4356871..dd1d64240e 100644
--- a/usr/src/lib/libc/port/sys/libc_link.c
+++ b/usr/src/lib/libc/port/sys/link.c
@@ -20,30 +20,26 @@
  */
 
 /*
- * Copyright 2008 Sun Microsystems, Inc.  All rights reserved.
- * Use is subject to license terms.
+ * Copyright (c) 2010, Oracle and/or its affiliates. All rights reserved.
  */
 
-#pragma ident	"%Z%%M%	%I%	%E% SMI"
-
-#pragma	weak _link = link
-
 #include "lint.h"
-#include <stdlib.h>
-#include <errno.h>
 #include <unistd.h>
-#include <limits.h>
+#include <fcntl.h>
+#include <sys/syscall.h>
 
 extern	int __xpg4; /* defined in port/gen/xpg4.c; 0 if not xpg4/xpg4v2 */
 
-extern int __link(const char *existing, const char *new);
-
 int
-link(const char *existing, const char *new)
+linkat(int fd1, const char *path1, int fd2, const char *path2, int flag)
 {
-	int 	sz;
-	char 	linkbuf[PATH_MAX + 1];
+	return (syscall(SYS_linkat, fd1, path1, fd2, path2, flag));
+}
 
+#pragma	weak _link = link
+int
+link(const char *path1, const char *path2)
+{
 	/*
 	 * XPG4v2 link() requires that the link count of a symbolic
 	 * link target be updated rather than the link itself.  This
@@ -56,11 +52,13 @@ link(const char *existing, const char *new)
 	 * non-XPG4 based environments. For a more detailed discussion,
 	 * see bug 1256170.
 	 */
-	if (__xpg4 != 0) {
-		if ((sz = resolvepath(existing, linkbuf, PATH_MAX)) == -1)
-			return (-1);
-		linkbuf[sz] = '\0';
-		existing = linkbuf;
-	}
-	return (__link(existing, new));
+	if (__xpg4 != 0)
+		return (linkat(AT_FDCWD, path1, AT_FDCWD, path2,
+		    AT_SYMLINK_FOLLOW));
+
+#if defined(_RETAIN_OLD_SYSCALLS)
+	return (syscall(SYS_link, path1, path2));
+#else
+	return (linkat(AT_FDCWD, path1, AT_FDCWD, path2, 0));
+#endif
 }
diff --git a/usr/src/lib/libc/common/sys/chmod.s b/usr/src/lib/libc/port/sys/mkdir.c
index e5175fafcb..49f60111c4 100644
--- a/usr/src/lib/libc/common/sys/chmod.s
+++ b/usr/src/lib/libc/port/sys/mkdir.c
@@ -18,26 +18,29 @@
  *
  * CDDL HEADER END
  */
-/*	Copyright (c) 1988 AT&T	*/
-/*	  All Rights Reserved	*/
-
 
 /*
- * Copyright 2004 Sun Microsystems, Inc.  All rights reserved.
- * Use is subject to license terms.
+ * Copyright (c) 2010, Oracle and/or its affiliates. All rights reserved.
  */
 
-	.file	"chmod.s"
-
-/* C library -- chmod						*/
-/* int chmod(char *path, mode_t mode)				*/
-
-#include <sys/asm_linkage.h>
-
-	ANSI_PRAGMA_WEAK(chmod,function)
-
-#include "SYS.h"
-
-	SYSCALL_RVAL1(chmod)
-	RETC
-	SET_SIZE(chmod)
+#include "lint.h"
+#include <sys/syscall.h>
+#include <sys/stat.h>
+#include <sys/fcntl.h>
+
+int
+mkdirat(int fd, const char *path, mode_t mode)
+{
+	return (syscall(SYS_mkdirat, fd, path, mode));
+}
+
+#pragma weak _mkdir = mkdir
+int
+mkdir(const char *path, mode_t mode)
+{
+#if defined(_RETAIN_OLD_SYSCALLS)
+	return (syscall(SYS_mkdir, path, mode));
+#else
+	return (mkdirat(AT_FDCWD, path, mode));
+#endif
+}
diff --git a/usr/src/lib/libc/common/sys/link.s b/usr/src/lib/libc/port/sys/mknod.c
index cbc03892b5..df179cfec2 100644
--- a/usr/src/lib/libc/common/sys/link.s
+++ b/usr/src/lib/libc/port/sys/mknod.c
@@ -20,20 +20,27 @@
  */
 
 /*
- * Copyright 2008 Sun Microsystems, Inc.  All rights reserved.
- * Use is subject to license terms.
+ * Copyright (c) 2010, Oracle and/or its affiliates. All rights reserved.
  */
 
-/*	Copyright (c) 1988 AT&T	*/
-/*	  All Rights Reserved	*/
+#include "lint.h"
+#include <sys/syscall.h>
+#include <sys/stat.h>
+#include <sys/fcntl.h>
 
-	.file	"link.s"
+int
+mknodat(int fd, const char *path, mode_t mode, dev_t dev)
+{
+	return (syscall(SYS_mknodat, fd, path, mode, dev));
+}
 
-/* C library -- link						*/
-/* int link (const char *path1, const char *path2);		*/
-
-#include "SYS.h"
-
-	SYSCALL2_RVAL1(__link,link)
-	RETC
-	SET_SIZE(__link)
+#pragma weak _mknod = mknod
+int
+mknod(const char *path, mode_t mode, dev_t dev)
+{
+#if defined(_RETAIN_OLD_SYSCALLS)
+	return (syscall(SYS_mknod, path, mode, dev));
+#else
+	return (mknodat(AT_FDCWD, path, mode, dev));
+#endif
+}
diff --git a/usr/src/lib/libc/port/sys/readlink.c b/usr/src/lib/libc/port/sys/readlink.c
new file mode 100644
index 0000000000..fc58441b53
--- /dev/null
+++ b/usr/src/lib/libc/port/sys/readlink.c
@@ -0,0 +1,58 @@
+/*
+ * 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 (c) 2010, Oracle and/or its affiliates. All rights reserved.
+ */
+
+#include "lint.h"
+#include <sys/syscall.h>
+#include <sys/unistd.h>
+#include <sys/fcntl.h>
+
+ssize_t
+readlinkat(int fd, const char *path, char *buf, size_t bufsize)
+{
+	sysret_t rval;
+	int error;
+
+	error = __systemcall(&rval, SYS_readlinkat, fd, path, buf, bufsize);
+	if (error)
+		(void) __set_errno(error);
+	return ((ssize_t)rval.sys_rval1);
+}
+
+#pragma weak _readlink = readlink
+ssize_t
+readlink(const char *path, char *buf, size_t bufsize)
+{
+#if defined(_RETAIN_OLD_SYSCALLS)
+	sysret_t rval;
+	int error;
+
+	error = __systemcall(&rval, SYS_readlink, path, buf, bufsize);
+	if (error)
+		(void) __set_errno(error);
+	return ((ssize_t)rval.sys_rval1);
+#else
+	return (readlinkat(AT_FDCWD, path, buf, bufsize));
+#endif
+}
diff --git a/usr/src/lib/libc/common/sys/fchmod.s b/usr/src/lib/libc/port/sys/symlink.c
index dc40164077..59a6ece2c4 100644
--- a/usr/src/lib/libc/common/sys/fchmod.s
+++ b/usr/src/lib/libc/port/sys/symlink.c
@@ -18,26 +18,29 @@
  *
  * CDDL HEADER END
  */
-/*	Copyright (c) 1988 AT&T	*/
-/*	  All Rights Reserved	*/
-
 
 /*
- * Copyright 2004 Sun Microsystems, Inc.  All rights reserved.
- * Use is subject to license terms.
+ * Copyright (c) 2010, Oracle and/or its affiliates. All rights reserved.
  */
 
-	.file	"fchmod.s"
-
-/* C library -- fchmod						*/
-/* int fchmod(int fildes, mode_t mode)				*/
-
-#include <sys/asm_linkage.h>
-
-	ANSI_PRAGMA_WEAK(fchmod,function)
-
-#include "SYS.h"
-
-	SYSCALL_RVAL1(fchmod)
-	RETC
-	SET_SIZE(fchmod)
+#include "lint.h"
+#include <sys/syscall.h>
+#include <sys/unistd.h>
+#include <sys/fcntl.h>
+
+int
+symlinkat(const char *path1, int fd, const char *path2)
+{
+	return (syscall(SYS_symlinkat, path1, fd, path2));
+}
+
+#pragma weak _symlink = symlink
+int
+symlink(const char *path1, const char *path2)
+{
+#if defined(_RETAIN_OLD_SYSCALLS)
+	return (syscall(SYS_symlink, path1, path2));
+#else
+	return (symlinkat(path1, AT_FDCWD, path2));
+#endif
+}
diff --git a/usr/src/lib/libc/sparc/Makefile.com b/usr/src/lib/libc/sparc/Makefile.com
index b03c067933..84c888d0fc 100644
--- a/usr/src/lib/libc/sparc/Makefile.com
+++ b/usr/src/lib/libc/sparc/Makefile.com
@@ -18,9 +18,8 @@
 #
 # CDDL HEADER END
 #
-
 #
-# Copyright (c) 2009, 2010, Oracle and/or its affiliates. All rights reserved.
+# Copyright (c) 1989, 2010, Oracle and/or its affiliates. All rights reserved.
 #
 
 LIBCDIR=	$(SRC)/lib/libc
@@ -213,7 +212,6 @@ COMSYSOBJS=			\
 	alarm.o			\
 	brk.o			\
 	chdir.o			\
-	chmod.o			\
 	chroot.o		\
 	cladm.o			\
 	close.o			\
@@ -221,7 +219,6 @@ COMSYSOBJS=			\
 	exit.o			\
 	facl.o			\
 	fchdir.o		\
-	fchmod.o		\
 	fchroot.o		\
 	fdsync.o		\
 	fpathconf.o		\
@@ -246,13 +243,10 @@ COMSYSOBJS=			\
 	ioctl.o			\
 	kaio.o			\
 	kill.o			\
-	link.o			\
 	llseek.o		\
 	lseek.o			\
 	memcntl.o		\
 	mincore.o		\
-	mkdir.o			\
-	mknod.o			\
 	mmap.o			\
 	mmapobjsys.o		\
 	modctl.o		\
@@ -276,7 +270,6 @@ COMSYSOBJS=			\
 	putpmsg.o		\
 	pwrite.o		\
 	read.o			\
-	readlink.o		\
 	readv.o			\
 	resolvepath.o		\
 	seteguid.o		\
@@ -293,7 +286,6 @@ COMSYSOBJS=			\
 	statfs.o		\
 	statvfs.o		\
 	stty.o			\
-	symlink.o		\
 	sync.o			\
 	sysconfig.o		\
 	sysfs.o			\
@@ -838,6 +830,7 @@ PORTSYS=			\
 	access.o		\
 	acctctl.o		\
 	bsd_signal.o		\
+	chmod.o			\
 	chown.o			\
 	corectl.o		\
 	exacctsys.o		\
@@ -850,13 +843,15 @@ PORTSYS=			\
 	inst_sync.o		\
 	issetugid.o		\
 	label.o			\
-	libc_link.o		\
+	link.o			\
 	lockf.o			\
 	lwp.o			\
 	lwp_cond.o		\
 	lwp_rwlock.o		\
 	lwp_sigmask.o		\
 	meminfosys.o		\
+	mkdir.o			\
+	mknod.o			\
 	msgsys.o		\
 	nfssys.o		\
 	open.o			\
@@ -865,6 +860,7 @@ PORTSYS=			\
 	ppriv.o			\
 	psetsys.o		\
 	rctlsys.o		\
+	readlink.o		\
 	rename.o		\
 	sbrk.o			\
 	semsys.o		\
@@ -877,6 +873,7 @@ PORTSYS=			\
 	sigpending.o		\
 	sigstack.o		\
 	stat.o			\
+	symlink.o		\
 	tasksys.o		\
 	time.o			\
 	time_util.o		\
diff --git a/usr/src/lib/libc/sparcv9/Makefile.com b/usr/src/lib/libc/sparcv9/Makefile.com
index 2144a07e17..897e294342 100644
--- a/usr/src/lib/libc/sparcv9/Makefile.com
+++ b/usr/src/lib/libc/sparcv9/Makefile.com
@@ -18,9 +18,8 @@
 #
 # CDDL HEADER END
 #
-
 #
-# Copyright (c) 2009, 2010, Oracle and/or its affiliates. All rights reserved.
+# Copyright (c) 1989, 2010, Oracle and/or its affiliates. All rights reserved.
 #
 
 LIBCDIR=	$(SRC)/lib/libc
@@ -200,7 +199,6 @@ COMSYSOBJS=			\
 	alarm.o			\
 	brk.o			\
 	chdir.o			\
-	chmod.o			\
 	chroot.o		\
 	cladm.o			\
 	close.o			\
@@ -208,7 +206,6 @@ COMSYSOBJS=			\
 	exit.o			\
 	facl.o			\
 	fchdir.o		\
-	fchmod.o		\
 	fchroot.o		\
 	fdsync.o		\
 	fpathconf.o		\
@@ -233,13 +230,10 @@ COMSYSOBJS=			\
 	ioctl.o			\
 	kaio.o			\
 	kill.o			\
-	link.o			\
 	llseek.o		\
 	lseek.o			\
 	memcntl.o		\
 	mincore.o		\
-	mkdir.o			\
-	mknod.o			\
 	mmap.o			\
 	mmapobjsys.o		\
 	modctl.o		\
@@ -263,7 +257,6 @@ COMSYSOBJS=			\
 	putpmsg.o		\
 	pwrite.o		\
 	read.o			\
-	readlink.o		\
 	readv.o			\
 	resolvepath.o		\
 	seteguid.o		\
@@ -280,7 +273,6 @@ COMSYSOBJS=			\
 	statfs.o		\
 	statvfs.o		\
 	stty.o			\
-	symlink.o		\
 	sync.o			\
 	sysconfig.o		\
 	sysfs.o			\
@@ -788,6 +780,7 @@ PORTSYS=			\
 	access.o		\
 	acctctl.o		\
 	bsd_signal.o		\
+	chmod.o			\
 	chown.o			\
 	corectl.o		\
 	exacctsys.o		\
@@ -800,13 +793,15 @@ PORTSYS=			\
 	inst_sync.o		\
 	issetugid.o		\
 	label.o			\
-	libc_link.o		\
+	link.o			\
 	lockf.o			\
 	lwp.o			\
 	lwp_cond.o		\
 	lwp_rwlock.o		\
 	lwp_sigmask.o		\
 	meminfosys.o		\
+	mkdir.o			\
+	mknod.o			\
 	msgsys.o		\
 	nfssys.o		\
 	open.o			\
@@ -815,6 +810,7 @@ PORTSYS=			\
 	ppriv.o			\
 	psetsys.o		\
 	rctlsys.o		\
+	readlink.o		\
 	rename.o		\
 	sbrk.o			\
 	semsys.o		\
@@ -827,6 +823,7 @@ PORTSYS=			\
 	sigpending.o		\
 	sigstack.o		\
 	stat.o			\
+	symlink.o		\
 	tasksys.o		\
 	time.o			\
 	time_util.o		\