xref: /titanic_50/usr/src/lib/libshell/misc/ERRATA.txt (revision 34f9b3eef6fdadbda0a846aa4d68691ac40eace5)

#
# 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
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#
# When distributing Covered Code, include this CDDL HEADER in each
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# If applicable, add the following below this CDDL HEADER, with the
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#

#
# Copyright 2009 Sun Microsystems, Inc.  All rights reserved.
# Use is subject to license terms.
#

#
# ERRATA.txt
#
# Errata/problems/notes about problems in the current sources
#

######## Errata #001: ########
The usage of |posix_spawn()| has been manually disabled because there seems to be a
race condition which cases sporadic failures like this:
-- snip --
$ builtin | fgrep sum | fgrep sum
/usr/ast/bin/sum
/usr/bin/sum
$ builtin | fgrep sum | fgrep sum
fgrep: fgrep: cannot execute [Exec format error]
-- snip --.
The following files have been changed:
-- snip --
Index: src/lib/libast/sparcv9/include/ast/ast_lib.h
===================================================================
--- usr/src/lib/libast/sparcv9/include/ast/ast_lib.h	(revision 888)
+++ usr/src/lib/libast/sparcv9/include/ast/ast_lib.h	(working copy)
@@ -160,7 +160,7 @@
 #define _hdr_unistd	1	/* #include <unistd.h> ok */
 #define _lib_vfork	1	/* vfork exists and it works */
 #define _real_vfork	1	/* vfork child shares data with parent */
-#define _lib_posix_spawn	2	/* posix_spawn exists and it works and its worth using */
+#define _lib_posix_spawn	1	/* posix_spawn exists and it works and its worth using */
 #define _stream_peek	1	/* ioctl(I_PEEK) works */
 #define _socket_peek	1	/* recv(MSG_PEEK) works */
 #define _hdr_string	1	/* #include <string.h> ok */
Index: src/lib/libast/sparcv9/src/lib/libast/ast_lib.h
===================================================================
--- usr/src/lib/libast/sparcv9/src/lib/libast/ast_lib.h	(revision 888)
+++ usr/src/lib/libast/sparcv9/src/lib/libast/ast_lib.h	(working copy)
@@ -139,7 +139,7 @@
 #define _hdr_unistd	1	/* #include <unistd.h> ok */
 #define _lib_vfork	1	/* vfork exists and it works */
 #define _real_vfork	1	/* vfork child shares data with parent */
-#define _lib_posix_spawn	2	/* posix_spawn exists and it works and its worth using */
+#define _lib_posix_spawn	1	/* posix_spawn exists and it works and its worth using */
 #define _stream_peek	1	/* ioctl(I_PEEK) works */
 #define _socket_peek	1	/* recv(MSG_PEEK) works */
 #define _hdr_string	1	/* #include <string.h> ok */
Index: src/lib/libast/sparcv9/src/lib/libast/FEATURE/lib
===================================================================
--- usr/src/lib/libast/sparcv9/src/lib/libast/FEATURE/lib	(revision 888)
+++ usr/src/lib/libast/sparcv9/src/lib/libast/FEATURE/lib	(working copy)
@@ -139,7 +139,7 @@
 #define _hdr_unistd	1	/* #include <unistd.h> ok */
 #define _lib_vfork	1	/* vfork exists and it works */
 #define _real_vfork	1	/* vfork child shares data with parent */
-#define _lib_posix_spawn	2	/* posix_spawn exists and it works and its worth using */
+#define _lib_posix_spawn	1	/* posix_spawn exists and it works and its worth using */
 #define _stream_peek	1	/* ioctl(I_PEEK) works */
 #define _socket_peek	1	/* recv(MSG_PEEK) works */
 #define _hdr_string	1	/* #include <string.h> ok */
Index: src/lib/libast/sparc/include/ast/ast_lib.h
===================================================================
--- usr/src/lib/libast/sparc/include/ast/ast_lib.h	(revision 888)
+++ usr/src/lib/libast/sparc/include/ast/ast_lib.h	(working copy)
@@ -171,7 +171,7 @@
 #define _hdr_unistd	1	/* #include <unistd.h> ok */
 #define _lib_vfork	1	/* vfork exists and it works */
 #define _real_vfork	1	/* vfork child shares data with parent */
-#define _lib_posix_spawn	2	/* posix_spawn exists and it works and its worth using */
+#define _lib_posix_spawn	1	/* posix_spawn exists and it works and its worth using */
 #define _stream_peek	1	/* ioctl(I_PEEK) works */
 #define _socket_peek	1	/* recv(MSG_PEEK) works */
 #define _hdr_string	1	/* #include <string.h> ok */
Index: src/lib/libast/sparc/src/lib/libast/ast_lib.h
===================================================================
--- usr/src/lib/libast/sparc/src/lib/libast/ast_lib.h	(revision 888)
+++ usr/src/lib/libast/sparc/src/lib/libast/ast_lib.h	(working copy)
@@ -150,7 +150,7 @@
 #define _hdr_unistd	1	/* #include <unistd.h> ok */
 #define _lib_vfork	1	/* vfork exists and it works */
 #define _real_vfork	1	/* vfork child shares data with parent */
-#define _lib_posix_spawn	2	/* posix_spawn exists and it works and its worth using */
+#define _lib_posix_spawn	1	/* posix_spawn exists and it works and its worth using */
 #define _stream_peek	1	/* ioctl(I_PEEK) works */
 #define _socket_peek	1	/* recv(MSG_PEEK) works */
 #define _hdr_string	1	/* #include <string.h> ok */
Index: src/lib/libast/sparc/src/lib/libast/FEATURE/lib
===================================================================
--- usr/src/lib/libast/sparc/src/lib/libast/FEATURE/lib	(revision 888)
+++ usr/src/lib/libast/sparc/src/lib/libast/FEATURE/lib	(working copy)
@@ -150,7 +150,7 @@
 #define _hdr_unistd	1	/* #include <unistd.h> ok */
 #define _lib_vfork	1	/* vfork exists and it works */
 #define _real_vfork	1	/* vfork child shares data with parent */
-#define _lib_posix_spawn	2	/* posix_spawn exists and it works and its worth using */
+#define _lib_posix_spawn	1	/* posix_spawn exists and it works and its worth using */
 #define _stream_peek	1	/* ioctl(I_PEEK) works */
 #define _socket_peek	1	/* recv(MSG_PEEK) works */
 #define _hdr_string	1	/* #include <string.h> ok */
Index: src/lib/libast/i386/include/ast/ast_lib.h
===================================================================
--- usr/src/lib/libast/i386/include/ast/ast_lib.h	(revision 888)
+++ usr/src/lib/libast/i386/include/ast/ast_lib.h	(working copy)
@@ -171,7 +171,7 @@
 #define _hdr_unistd	1	/* #include <unistd.h> ok */
 #define _lib_vfork	1	/* vfork exists and it works */
 #define _real_vfork	1	/* vfork child shares data with parent */
-#define _lib_posix_spawn	2	/* posix_spawn exists and it works and its worth using */
+#define _lib_posix_spawn	1	/* posix_spawn exists and it works and its worth using */
 #define _stream_peek	1	/* ioctl(I_PEEK) works */
 #define _socket_peek	1	/* recv(MSG_PEEK) works */
 #define _hdr_string	1	/* #include <string.h> ok */
Index: src/lib/libast/i386/src/lib/libast/ast_lib.h
===================================================================
--- usr/src/lib/libast/i386/src/lib/libast/ast_lib.h	(revision 888)
+++ usr/src/lib/libast/i386/src/lib/libast/ast_lib.h	(working copy)
@@ -150,7 +150,7 @@
 #define _hdr_unistd	1	/* #include <unistd.h> ok */
 #define _lib_vfork	1	/* vfork exists and it works */
 #define _real_vfork	1	/* vfork child shares data with parent */
-#define _lib_posix_spawn	2	/* posix_spawn exists and it works and its worth using */
+#define _lib_posix_spawn	1	/* posix_spawn exists and it works and its worth using */
 #define _stream_peek	1	/* ioctl(I_PEEK) works */
 #define _socket_peek	1	/* recv(MSG_PEEK) works */
 #define _hdr_string	1	/* #include <string.h> ok */
Index: src/lib/libast/i386/src/lib/libast/FEATURE/lib
===================================================================
--- usr/src/lib/libast/i386/src/lib/libast/FEATURE/lib	(revision 888)
+++ usr/src/lib/libast/i386/src/lib/libast/FEATURE/lib	(working copy)
@@ -150,7 +150,7 @@
 #define _hdr_unistd	1	/* #include <unistd.h> ok */
 #define _lib_vfork	1	/* vfork exists and it works */
 #define _real_vfork	1	/* vfork child shares data with parent */
-#define _lib_posix_spawn	2	/* posix_spawn exists and it works and its worth using */
+#define _lib_posix_spawn	1	/* posix_spawn exists and it works and its worth using */
 #define _stream_peek	1	/* ioctl(I_PEEK) works */
 #define _socket_peek	1	/* recv(MSG_PEEK) works */
 #define _hdr_string	1	/* #include <string.h> ok */
Index: src/lib/libast/amd64/include/ast/ast_lib.h
===================================================================
--- usr/src/lib/libast/amd64/include/ast/ast_lib.h	(revision 888)
+++ usr/src/lib/libast/amd64/include/ast/ast_lib.h	(working copy)
@@ -160,7 +160,7 @@
 #define _hdr_unistd	1	/* #include <unistd.h> ok */
 #define _lib_vfork	1	/* vfork exists and it works */
 #define _real_vfork	1	/* vfork child shares data with parent */
-#define _lib_posix_spawn	2	/* posix_spawn exists and it works and its worth using */
+#define _lib_posix_spawn	1	/* posix_spawn exists and it works and its worth using */
 #define _stream_peek	1	/* ioctl(I_PEEK) works */
 #define _socket_peek	1	/* recv(MSG_PEEK) works */
 #define _hdr_string	1	/* #include <string.h> ok */
Index: src/lib/libast/amd64/src/lib/libast/ast_lib.h
===================================================================
--- usr/src/lib/libast/amd64/src/lib/libast/ast_lib.h	(revision 888)
+++ usr/src/lib/libast/amd64/src/lib/libast/ast_lib.h	(working copy)
@@ -139,7 +139,7 @@
 #define _hdr_unistd	1	/* #include <unistd.h> ok */
 #define _lib_vfork	1	/* vfork exists and it works */
 #define _real_vfork	1	/* vfork child shares data with parent */
-#define _lib_posix_spawn	2	/* posix_spawn exists and it works and its worth using */
+#define _lib_posix_spawn	1	/* posix_spawn exists and it works and its worth using */
 #define _stream_peek	1	/* ioctl(I_PEEK) works */
 #define _socket_peek	1	/* recv(MSG_PEEK) works */
 #define _hdr_string	1	/* #include <string.h> ok */
Index: src/lib/libast/amd64/src/lib/libast/FEATURE/lib
===================================================================
--- usr/src/lib/libast/amd64/src/lib/libast/FEATURE/lib	(revision 888)
+++ usr/src/lib/libast/amd64/src/lib/libast/FEATURE/lib	(working copy)
@@ -139,7 +139,7 @@
 #define _hdr_unistd	1	/* #include <unistd.h> ok */
 #define _lib_vfork	1	/* vfork exists and it works */
 #define _real_vfork	1	/* vfork child shares data with parent */
-#define _lib_posix_spawn	2	/* posix_spawn exists and it works and its worth using */
+#define _lib_posix_spawn	1	/* posix_spawn exists and it works and its worth using */
 #define _stream_peek	1	/* ioctl(I_PEEK) works */
 #define _socket_peek	1	/* recv(MSG_PEEK) works */
 #define _hdr_string	1	/* #include <string.h> ok */
-- snip --


######## Errata #002: ########
The usage of |mmap()| has been manually enabled to improve I/O performance.
The following files have been changed:
-- snip --
Index: usr/src/lib/libast/sparcv9/include/ast/ast_mmap.h
===================================================================
--- usr/src/lib/libast/sparcv9/include/ast/ast_mmap.h	(revision 1701)
+++ usr/src/lib/libast/sparcv9/include/ast/ast_mmap.h	(working copy)
@@ -28,6 +28,7 @@
 #define _lib_mmap64	1	/* mmap64 interface and implementation work */
 #define _mmap_anon	1	/* use mmap MAP_ANON to get raw memory */
 #define _mmap_devzero	1	/* use mmap on /dev/zero to get raw memory */
+#define _mmap_worthy	2	/* mmap is good */

 /* some systems get it wrong but escape concise detection */
 #ifndef _NO_MMAP
Index: usr/src/lib/libast/sparcv9/src/lib/libast/ast_mmap.h
===================================================================
--- usr/src/lib/libast/sparcv9/src/lib/libast/ast_mmap.h	(revision 1701)
+++ usr/src/lib/libast/sparcv9/src/lib/libast/ast_mmap.h	(working copy)
@@ -7,6 +7,7 @@
 #define _lib_mmap64	1	/* mmap64 interface and implementation work */
 #define _mmap_anon	1	/* use mmap MAP_ANON to get raw memory */
 #define _mmap_devzero	1	/* use mmap on /dev/zero to get raw memory */
+#define _mmap_worthy	2	/* mmap is good */

 /* some systems get it wrong but escape concise detection */
 #ifndef _NO_MMAP
Index: usr/src/lib/libast/sparcv9/src/lib/libast/FEATURE/mmap
===================================================================
--- usr/src/lib/libast/sparcv9/src/lib/libast/FEATURE/mmap	(revision 1701)
+++ usr/src/lib/libast/sparcv9/src/lib/libast/FEATURE/mmap	(working copy)
@@ -7,6 +7,7 @@
 #define _lib_mmap64	1	/* mmap64 interface and implementation work */
 #define _mmap_anon	1	/* use mmap MAP_ANON to get raw memory */
 #define _mmap_devzero	1	/* use mmap on /dev/zero to get raw memory */
+#define _mmap_worthy	2	/* mmap is good */

 /* some systems get it wrong but escape concise detection */
 #ifndef _NO_MMAP
Index: usr/src/lib/libast/sparc/include/ast/ast_mmap.h
===================================================================
--- usr/src/lib/libast/sparc/include/ast/ast_mmap.h	(revision 1701)
+++ usr/src/lib/libast/sparc/include/ast/ast_mmap.h	(working copy)
@@ -28,7 +28,7 @@
 #define _lib_mmap64	1	/* mmap64 interface and implementation work */
 #define _mmap_anon	1	/* use mmap MAP_ANON to get raw memory */
 #define _mmap_devzero	1	/* use mmap on /dev/zero to get raw memory */
-#define _mmap_worthy	1	/* mmap is good */
+#define _mmap_worthy	2	/* mmap is good */

 /* some systems get it wrong but escape concise detection */
 #ifndef _NO_MMAP
Index: usr/src/lib/libast/sparc/src/lib/libast/ast_mmap.h
===================================================================
--- usr/src/lib/libast/sparc/src/lib/libast/ast_mmap.h	(revision 1701)
+++ usr/src/lib/libast/sparc/src/lib/libast/ast_mmap.h	(working copy)
@@ -7,7 +7,7 @@
 #define _lib_mmap64	1	/* mmap64 interface and implementation work */
 #define _mmap_anon	1	/* use mmap MAP_ANON to get raw memory */
 #define _mmap_devzero	1	/* use mmap on /dev/zero to get raw memory */
-#define _mmap_worthy	1	/* mmap is good */
+#define _mmap_worthy	2	/* mmap is good */

 /* some systems get it wrong but escape concise detection */
 #ifndef _NO_MMAP
Index: usr/src/lib/libast/sparc/src/lib/libast/FEATURE/mmap
===================================================================
--- usr/src/lib/libast/sparc/src/lib/libast/FEATURE/mmap	(revision 1701)
+++ usr/src/lib/libast/sparc/src/lib/libast/FEATURE/mmap	(working copy)
@@ -7,7 +7,7 @@
 #define _lib_mmap64	1	/* mmap64 interface and implementation work */
 #define _mmap_anon	1	/* use mmap MAP_ANON to get raw memory */
 #define _mmap_devzero	1	/* use mmap on /dev/zero to get raw memory */
-#define _mmap_worthy	1	/* mmap is good */
+#define _mmap_worthy	2	/* mmap is good */

 /* some systems get it wrong but escape concise detection */
 #ifndef _NO_MMAP
Index: usr/src/lib/libast/i386/include/ast/ast_mmap.h
===================================================================
--- usr/src/lib/libast/i386/include/ast/ast_mmap.h	(revision 1701)
+++ usr/src/lib/libast/i386/include/ast/ast_mmap.h	(working copy)
@@ -28,6 +28,7 @@
 #define _lib_mmap64	1	/* mmap64 interface and implementation work */
 #define _mmap_anon	1	/* use mmap MAP_ANON to get raw memory */
 #define _mmap_devzero	1	/* use mmap on /dev/zero to get raw memory */
+#define _mmap_worthy	2	/* mmap is good */

 /* some systems get it wrong but escape concise detection */
 #ifndef _NO_MMAP
Index: usr/src/lib/libast/i386/src/lib/libast/ast_mmap.h
===================================================================
--- usr/src/lib/libast/i386/src/lib/libast/ast_mmap.h	(revision 1701)
+++ usr/src/lib/libast/i386/src/lib/libast/ast_mmap.h	(working copy)
@@ -7,6 +7,7 @@
 #define _lib_mmap64	1	/* mmap64 interface and implementation work */
 #define _mmap_anon	1	/* use mmap MAP_ANON to get raw memory */
 #define _mmap_devzero	1	/* use mmap on /dev/zero to get raw memory */
+#define _mmap_worthy	2	/* mmap is good */

 /* some systems get it wrong but escape concise detection */
 #ifndef _NO_MMAP
Index: usr/src/lib/libast/i386/src/lib/libast/FEATURE/mmap
===================================================================
--- usr/src/lib/libast/i386/src/lib/libast/FEATURE/mmap	(revision 1701)
+++ usr/src/lib/libast/i386/src/lib/libast/FEATURE/mmap	(working copy)
@@ -7,6 +7,7 @@
 #define _lib_mmap64	1	/* mmap64 interface and implementation work */
 #define _mmap_anon	1	/* use mmap MAP_ANON to get raw memory */
 #define _mmap_devzero	1	/* use mmap on /dev/zero to get raw memory */
+#define _mmap_worthy	2	/* mmap is good */

 /* some systems get it wrong but escape concise detection */
 #ifndef _NO_MMAP
Index: usr/src/lib/libast/amd64/include/ast/ast_mmap.h
===================================================================
--- usr/src/lib/libast/amd64/include/ast/ast_mmap.h	(revision 1701)
+++ usr/src/lib/libast/amd64/include/ast/ast_mmap.h	(working copy)
@@ -28,6 +28,7 @@
 #define _lib_mmap64	1	/* mmap64 interface and implementation work */
 #define _mmap_anon	1	/* use mmap MAP_ANON to get raw memory */
 #define _mmap_devzero	1	/* use mmap on /dev/zero to get raw memory */
+#define _mmap_worthy	2	/* mmap is good */

 /* some systems get it wrong but escape concise detection */
 #ifndef _NO_MMAP
Index: usr/src/lib/libast/amd64/src/lib/libast/ast_mmap.h
===================================================================
--- usr/src/lib/libast/amd64/src/lib/libast/ast_mmap.h	(revision 1701)
+++ usr/src/lib/libast/amd64/src/lib/libast/ast_mmap.h	(working copy)
@@ -7,6 +7,7 @@
 #define _lib_mmap64	1	/* mmap64 interface and implementation work */
 #define _mmap_anon	1	/* use mmap MAP_ANON to get raw memory */
 #define _mmap_devzero	1	/* use mmap on /dev/zero to get raw memory */
+#define _mmap_worthy	2	/* mmap is good */

 /* some systems get it wrong but escape concise detection */
 #ifndef _NO_MMAP
Index: usr/src/lib/libast/amd64/src/lib/libast/FEATURE/mmap
===================================================================
--- usr/src/lib/libast/amd64/src/lib/libast/FEATURE/mmap	(revision 1701)
+++ usr/src/lib/libast/amd64/src/lib/libast/FEATURE/mmap	(working copy)
@@ -7,6 +7,7 @@
 #define _lib_mmap64	1	/* mmap64 interface and implementation work */
 #define _mmap_anon	1	/* use mmap MAP_ANON to get raw memory */
 #define _mmap_devzero	1	/* use mmap on /dev/zero to get raw memory */
+#define _mmap_worthy	2	/* mmap is good */

 /* some systems get it wrong but escape concise detection */
 #ifndef _NO_MMAP
-- snip --


######## Errata #003: ########
A workaround was added for a problem with the "multiline" editor mode which
occurs when the edit line becomes longer than the terminal's width and the
terminal cursor is not at position 0 when PS1 is send to the terminal.

For example: The user executes a $ printf "foo"<enter> # the prompt will start
at position 3 instead of 0. If the user enters a command which is longer than
the terminal width and then removes enougth characters that the edit line fits
again into one line the "foo" at the beginning will be overwritten with the
prompt.

The workaround is to add $(printf "%*s\r%s" COLUMNS "") at the beginning of
PS1 set by /etc/ksh.kshrc, this causes the shell to move to the beginning
of the next line if the terminal cursor is not at position 0.


######## Errata #004: ########
A workaround has been added for a probem with the AST "tail" builtin which
causes "tail" to sleep too long when polling for data in "follow" mode.
The following files have been changed:
-- snip --
Index: src/lib/libcmd/common/tail.c
===================================================================
--- usr/src/lib/libcmd/common/tail.c	(revision 1701)
+++ usr/src/lib/libcmd/common/tail.c	(working copy)
@@ -636,7 +636,14 @@
 		{
 			if (sfsync(sfstdout))
 				error(ERROR_system(1), "write error");
+#if 0
 			sleep(1);
+#else
+			{
+				struct timespec rqt = { 0L, 1000000000L/4L };
+				(void)nanosleep(&rqt, NULL);
+			}
+#endif
 			n = 0;
 			pp = 0;
 			while (fp)
-- snip --


######## Errata #005: ########
The POSIX "cksum"/CRC and AT&T "sum" codepaths in libsum have been reworked
and then backpoprted to address a performance regression on some
machine/architecture combinations.
The following files have been changed:
-- snip --
Index: usr/src/lib/libsum/common/sum-crc.c
===================================================================
--- usr/src/lib/libsum/common/sum-crc.c	(revision 1724)
+++ usr/src/lib/libsum/common/sum-crc.c	(working copy)
@@ -48,7 +48,8 @@
 	Crcnum_t		init;
 	Crcnum_t		done;
 	Crcnum_t		xorsize;
-	Crcnum_t		tab[256];
+	const Crcnum_t		*tab; /* use |const| to give the compiler a hint that the data won't change */
+	Crcnum_t		tabdata[256];
 	unsigned int		addsize;
 	unsigned int		rotate;
 } Crc_t;
@@ -56,6 +57,62 @@
 #define CRC(p,s,c)		(s = (s >> 8) ^ (p)->tab[(s ^ (c)) & 0xff])
 #define CRCROTATE(p,s,c)	(s = (s << 8) ^ (p)->tab[((s >> 24) ^ (c)) & 0xff])

+static const
+Crcnum_t posix_cksum_tab[256] = {
+	0x00000000U,
+	0x04c11db7U, 0x09823b6eU, 0x0d4326d9U, 0x130476dcU, 0x17c56b6bU,
+	0x1a864db2U, 0x1e475005U, 0x2608edb8U, 0x22c9f00fU, 0x2f8ad6d6U,
+	0x2b4bcb61U, 0x350c9b64U, 0x31cd86d3U, 0x3c8ea00aU, 0x384fbdbdU,
+	0x4c11db70U, 0x48d0c6c7U, 0x4593e01eU, 0x4152fda9U, 0x5f15adacU,
+	0x5bd4b01bU, 0x569796c2U, 0x52568b75U, 0x6a1936c8U, 0x6ed82b7fU,
+	0x639b0da6U, 0x675a1011U, 0x791d4014U, 0x7ddc5da3U, 0x709f7b7aU,
+	0x745e66cdU, 0x9823b6e0U, 0x9ce2ab57U, 0x91a18d8eU, 0x95609039U,
+	0x8b27c03cU, 0x8fe6dd8bU, 0x82a5fb52U, 0x8664e6e5U, 0xbe2b5b58U,
+	0xbaea46efU, 0xb7a96036U, 0xb3687d81U, 0xad2f2d84U, 0xa9ee3033U,
+	0xa4ad16eaU, 0xa06c0b5dU, 0xd4326d90U, 0xd0f37027U, 0xddb056feU,
+	0xd9714b49U, 0xc7361b4cU, 0xc3f706fbU, 0xceb42022U, 0xca753d95U,
+	0xf23a8028U, 0xf6fb9d9fU, 0xfbb8bb46U, 0xff79a6f1U, 0xe13ef6f4U,
+	0xe5ffeb43U, 0xe8bccd9aU, 0xec7dd02dU, 0x34867077U, 0x30476dc0U,
+	0x3d044b19U, 0x39c556aeU, 0x278206abU, 0x23431b1cU, 0x2e003dc5U,
+	0x2ac12072U, 0x128e9dcfU, 0x164f8078U, 0x1b0ca6a1U, 0x1fcdbb16U,
+	0x018aeb13U, 0x054bf6a4U, 0x0808d07dU, 0x0cc9cdcaU, 0x7897ab07U,
+	0x7c56b6b0U, 0x71159069U, 0x75d48ddeU, 0x6b93dddbU, 0x6f52c06cU,
+	0x6211e6b5U, 0x66d0fb02U, 0x5e9f46bfU, 0x5a5e5b08U, 0x571d7dd1U,
+	0x53dc6066U, 0x4d9b3063U, 0x495a2dd4U, 0x44190b0dU, 0x40d816baU,
+	0xaca5c697U, 0xa864db20U, 0xa527fdf9U, 0xa1e6e04eU, 0xbfa1b04bU,
+	0xbb60adfcU, 0xb6238b25U, 0xb2e29692U, 0x8aad2b2fU, 0x8e6c3698U,
+	0x832f1041U, 0x87ee0df6U, 0x99a95df3U, 0x9d684044U, 0x902b669dU,
+	0x94ea7b2aU, 0xe0b41de7U, 0xe4750050U, 0xe9362689U, 0xedf73b3eU,
+	0xf3b06b3bU, 0xf771768cU, 0xfa325055U, 0xfef34de2U, 0xc6bcf05fU,
+	0xc27dede8U, 0xcf3ecb31U, 0xcbffd686U, 0xd5b88683U, 0xd1799b34U,
+	0xdc3abdedU, 0xd8fba05aU, 0x690ce0eeU, 0x6dcdfd59U, 0x608edb80U,
+	0x644fc637U, 0x7a089632U, 0x7ec98b85U, 0x738aad5cU, 0x774bb0ebU,
+	0x4f040d56U, 0x4bc510e1U, 0x46863638U, 0x42472b8fU, 0x5c007b8aU,
+	0x58c1663dU, 0x558240e4U, 0x51435d53U, 0x251d3b9eU, 0x21dc2629U,
+	0x2c9f00f0U, 0x285e1d47U, 0x36194d42U, 0x32d850f5U, 0x3f9b762cU,
+	0x3b5a6b9bU, 0x0315d626U, 0x07d4cb91U, 0x0a97ed48U, 0x0e56f0ffU,
+	0x1011a0faU, 0x14d0bd4dU, 0x19939b94U, 0x1d528623U, 0xf12f560eU,
+	0xf5ee4bb9U, 0xf8ad6d60U, 0xfc6c70d7U, 0xe22b20d2U, 0xe6ea3d65U,
+	0xeba91bbcU, 0xef68060bU, 0xd727bbb6U, 0xd3e6a601U, 0xdea580d8U,
+	0xda649d6fU, 0xc423cd6aU, 0xc0e2d0ddU, 0xcda1f604U, 0xc960ebb3U,
+	0xbd3e8d7eU, 0xb9ff90c9U, 0xb4bcb610U, 0xb07daba7U, 0xae3afba2U,
+	0xaafbe615U, 0xa7b8c0ccU, 0xa379dd7bU, 0x9b3660c6U, 0x9ff77d71U,
+	0x92b45ba8U, 0x9675461fU, 0x8832161aU, 0x8cf30badU, 0x81b02d74U,
+	0x857130c3U, 0x5d8a9099U, 0x594b8d2eU, 0x5408abf7U, 0x50c9b640U,
+	0x4e8ee645U, 0x4a4ffbf2U, 0x470cdd2bU, 0x43cdc09cU, 0x7b827d21U,
+	0x7f436096U, 0x7200464fU, 0x76c15bf8U, 0x68860bfdU, 0x6c47164aU,
+	0x61043093U, 0x65c52d24U, 0x119b4be9U, 0x155a565eU, 0x18197087U,
+	0x1cd86d30U, 0x029f3d35U, 0x065e2082U, 0x0b1d065bU, 0x0fdc1becU,
+	0x3793a651U, 0x3352bbe6U, 0x3e119d3fU, 0x3ad08088U, 0x2497d08dU,
+	0x2056cd3aU, 0x2d15ebe3U, 0x29d4f654U, 0xc5a92679U, 0xc1683bceU,
+	0xcc2b1d17U, 0xc8ea00a0U, 0xd6ad50a5U, 0xd26c4d12U, 0xdf2f6bcbU,
+	0xdbee767cU, 0xe3a1cbc1U, 0xe760d676U, 0xea23f0afU, 0xeee2ed18U,
+	0xf0a5bd1dU, 0xf464a0aaU, 0xf9278673U, 0xfde69bc4U, 0x89b8fd09U,
+	0x8d79e0beU, 0x803ac667U, 0x84fbdbd0U, 0x9abc8bd5U, 0x9e7d9662U,
+	0x933eb0bbU, 0x97ffad0cU, 0xafb010b1U, 0xab710d06U, 0xa6322bdfU,
+	0xa2f33668U, 0xbcb4666dU, 0xb8757bdaU, 0xb5365d03U, 0xb1f740b4U
+};
+
 static Sum_t*
 crc_open(const Method_t* method, const char* name)
 {
@@ -73,62 +130,80 @@
 		sum->method = (Method_t*)method;
 		sum->name = name;
 	}
-	polynomial = 0xedb88320;
-	s = name;
-	while (*(t = s))
+
+	if(!strcmp(name, "crc-0x04c11db7-rotate-done-size"))
 	{
-		for (t = s, v = 0; *s && *s != '-'; s++)
-			if (*s == '=' && !v)
-				v = s;
-		i = (v ? v : s) - t;
-		if (isdigit(*t) || v && i >= 4 && strneq(t, "poly", 4) && (t = v + 1))
-			polynomial = strtoul(t, NiL, 0);
-		else if (strneq(t, "done", i))
-			sum->done = v ? strtoul(v + 1, NiL, 0) : ~sum->done;
-		else if (strneq(t, "init", i))
-			sum->init = v ? strtoul(v + 1, NiL, 0) : ~sum->init;
-		else if (strneq(t, "rotate", i))
-			sum->rotate = 1;
-		else if (strneq(t, "size", i))
-		{
-			sum->addsize = 1;
-			if (v)
-				sum->xorsize = strtoul(v + 1, NiL, 0);
-		}
-		if (*s == '-')
-			s++;
+		sum->init=0;
+		sum->done=0xffffffff;
+		sum->xorsize=0x0;
+		sum->addsize=0x1;
+		sum->rotate=1;
+
+		/* Optimized codepath for POSIX cksum to save startup time */
+		sum->tab=posix_cksum_tab;
 	}
-	if (sum->rotate)
+	else
 	{
-		Crcnum_t	t;
-		Crcnum_t	p[8];
-
-		p[0] = polynomial;
-		for (i = 1; i < 8; i++)
-			p[i] = (p[i-1] << 1) ^ ((p[i-1] & 0x80000000) ? polynomial : 0);
-		for (i = 0; i < elementsof(sum->tab); i++)
+		polynomial = 0xedb88320;
+		s = name;
+		while (*(t = s))
 		{
-			t = 0;
-			x = i;
-			for (j = 0; j < 8; j++)
+			for (t = s, v = 0; *s && *s != '-'; s++)
+				if (*s == '=' && !v)
+					v = s;
+			i = (v ? v : s) - t;
+			if (isdigit(*t) || v && i >= 4 && strneq(t, "poly", 4) && (t = v + 1))
+				polynomial = strtoul(t, NiL, 0);
+			else if (strneq(t, "done", i))
+				sum->done = v ? strtoul(v + 1, NiL, 0) : ~sum->done;
+			else if (strneq(t, "init", i))
+				sum->init = v ? strtoul(v + 1, NiL, 0) : ~sum->init;
+			else if (strneq(t, "rotate", i))
+				sum->rotate = 1;
+			else if (strneq(t, "size", i))
 			{
-				if (x & 1)
-					t ^= p[j];
-				x >>= 1;
+				sum->addsize = 1;
+				if (v)
+					sum->xorsize = strtoul(v + 1, NiL, 0);
 			}
-			sum->tab[i] = t;
+			if (*s == '-')
+				s++;
 		}
-	}
-	else
-	{
-		for (i = 0; i < elementsof(sum->tab); i++)
+		if (sum->rotate)
 		{
-			x = i;
-			for (j = 0; j < 8; j++)
-				x = (x>>1) ^ ((x & 1) ? polynomial : 0);
-			sum->tab[i] = x;
+			Crcnum_t	t;
+			Crcnum_t	p[8];
+
+			p[0] = polynomial;
+			for (i = 1; i < 8; i++)
+				p[i] = (p[i-1] << 1) ^ ((p[i-1] & 0x80000000) ? polynomial : 0);
+			for (i = 0; i < elementsof(sum->tabdata); i++)
+			{
+				t = 0;
+				x = i;
+				for (j = 0; j < 8; j++)
+				{
+					if (x & 1)
+						t ^= p[j];
+					x >>= 1;
+				}
+				sum->tabdata[i] = t;
+			}
 		}
+		else
+		{
+			for (i = 0; i < elementsof(sum->tabdata); i++)
+			{
+				x = i;
+				for (j = 0; j < 8; j++)
+					x = (x>>1) ^ ((x & 1) ? polynomial : 0);
+				sum->tabdata[i] = x;
+			}
+		}
+
+		sum->tab=sum->tabdata;
 	}
+
 	return (Sum_t*)sum;
 }

@@ -141,11 +216,77 @@
 	return 0;
 }

+#if defined(__SUNPRO_C) || defined(__GNUC__)
+
+#if defined(__SUNPRO_C)
+#    include <sun_prefetch.h>
+#    define sum_prefetch(addr) sun_prefetch_read_many((void *)(addr))
+#elif defined(__GNUC__)
+#    define sum_prefetch(addr) __builtin_prefetch((addr), 0, 3)
+#else
+#    error Unknown compiler
+#endif
+
+#define CBLOCK_SIZE (64)
+#pragma unroll(16)
+
 static int
 crc_block(Sum_t* p, const void* s, size_t n)
 {
 	Crc_t*			sum = (Crc_t*)p;
 	register Crcnum_t	c = sum->sum;
+	register const unsigned char*	b = (const unsigned char*)s;
+	register const unsigned char*	e = b + n;
+	unsigned short i;
+
+	sum_prefetch(b);
+
+	if (sum->rotate)
+	{
+		while (n > CBLOCK_SIZE)
+		{
+			sum_prefetch(b+CBLOCK_SIZE);
+			for(i=0 ; i < CBLOCK_SIZE ; i++)
+			{
+				CRCROTATE(sum, c, *b++);
+			}
+
+			n-=CBLOCK_SIZE;
+		}
+
+		while (b < e)
+		{
+			CRCROTATE(sum, c, *b++);
+		}
+	}
+	else
+	{
+		while (n > CBLOCK_SIZE)
+		{
+			sum_prefetch(b+CBLOCK_SIZE);
+			for(i=0 ; i < CBLOCK_SIZE ; i++)
+			{
+				CRC(sum, c, *b++);
+			}
+
+			n-=CBLOCK_SIZE;
+		}
+
+		while (b < e)
+		{
+			CRC(sum, c, *b++);
+		}
+	}
+
+	sum->sum = c;
+	return 0;
+}
+#else
+static int
+crc_block(Sum_t* p, const void* s, size_t n)
+{
+	Crc_t*			sum = (Crc_t*)p;
+	register Crcnum_t	c = sum->sum;
 	register unsigned char*	b = (unsigned char*)s;
 	register unsigned char*	e = b + n;

@@ -158,6 +299,7 @@
 	sum->sum = c;
 	return 0;
 }
+#endif /* defined(__SUNPRO_C) || defined(__GNUC__) */

 static int
 crc_done(Sum_t* p)
Index: usr/src/lib/libsum/common/sum-att.c
===================================================================
--- usr/src/lib/libsum/common/sum-att.c	(revision 1724)
+++ usr/src/lib/libsum/common/sum-att.c	(working copy)
@@ -35,10 +35,73 @@
 #define att_data	long_data
 #define att_scale	512

+#if defined(__SUNPRO_C) || defined(__GNUC__)
+
+#if defined(__SUNPRO_C)
+#    include <sun_prefetch.h>
+#    define sum_prefetch(addr) sun_prefetch_read_many((void *)(addr))
+#elif defined(__GNUC__)
+#    define sum_prefetch(addr) __builtin_prefetch((addr), 0, 3)
+#else
+#    error Unknown compiler
+#endif
+
+#define CBLOCK_SIZE (64)
+#pragma unroll(16)
+
+/* Inmos transputer would love this algorithm */
 static int
 att_block(register Sum_t* p, const void* s, size_t n)
 {
 	register uint32_t	c = ((Integral_t*)p)->sum;
+	register const unsigned char*	b = (const unsigned char*)s;
+	register const unsigned char*	e = b + n;
+	register uint32_t s0, s1, s2, s3, s4, s5, s6, s7;
+	register unsigned int i;
+
+	s0=s1=s2=s3=s4=s5=s6=s7=0U;
+
+	sum_prefetch((void *)b);
+
+	while (n > CBLOCK_SIZE)
+	{
+		sum_prefetch((b+CBLOCK_SIZE));
+
+		/* Compiler will unroll for() loops per #pragma unroll */
+		for (i=0 ; i < (CBLOCK_SIZE/8) ; i++)
+		{
+			/*
+			 * use s0-s7 to decouple calculations (this improves pipelining)
+			 * because each operation is completely independent from it's
+			 * siblings
+			 */
+			s0+=b[0];
+			s1+=b[1];
+			s2+=b[2];
+			s3+=b[3];
+			s4+=b[4];
+			s5+=b[5];
+			s6+=b[6];
+			s7+=b[7];
+
+			b+=8;
+			n-=8;
+		}
+	}
+
+	c+=s0+s1+s2+s3+s4+s5+s6+s7;
+
+	while (b < e)
+		c += *b++;
+	((Integral_t*)p)->sum = c;
+	return 0;
+}
+
+#else
+static int
+att_block(register Sum_t* p, const void* s, size_t n)
+{
+	register uint32_t	c = ((Integral_t*)p)->sum;
 	register unsigned char*	b = (unsigned char*)s;
 	register unsigned char*	e = b + n;

@@ -47,6 +110,7 @@
 	((Integral_t*)p)->sum = c;
 	return 0;
 }
+#endif /* defined(__SUNPRO_C) || defined(__GNUC__) */

 static int
 att_done(Sum_t* p)
-- snip --

# EOF.