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[src/trunk]: src Add native implementations of eventfd(2) and timerfd(2), com...



details:   https://anonhg.NetBSD.org/src/rev/8180114e2953
branches:  trunk
changeset: 1023632:8180114e2953
user:      thorpej <thorpej%NetBSD.org@localhost>
date:      Sun Sep 19 15:51:27 2021 +0000

description:
Add native implementations of eventfd(2) and timerfd(2), compatible with
the Linux interfaces of the same name.

diffstat:

 distrib/sets/lists/base/shl.mi  |    6 +-
 distrib/sets/lists/comp/mi      |   25 +-
 distrib/sets/lists/debug/mi     |    4 +-
 distrib/sets/lists/debug/shl.mi |    6 +-
 distrib/sets/lists/tests/mi     |    4 +-
 lib/libc/shlib_version          |    4 +-
 lib/libc/sys/Makefile.inc       |   20 +-
 lib/libc/sys/eventfd.2          |  271 +++++++++++++
 lib/libc/sys/eventfd_read.c     |   60 +++
 lib/libc/sys/eventfd_write.c    |   58 ++
 lib/libc/sys/timerfd.2          |  321 ++++++++++++++++
 sys/kern/files.kern             |    4 +-
 sys/kern/sys_eventfd.c          |  579 +++++++++++++++++++++++++++++
 sys/kern/sys_timerfd.c          |  691 ++++++++++++++++++++++++++++++++++
 sys/kern/syscalls.master        |   14 +-
 sys/sys/Makefile                |    6 +-
 sys/sys/eventfd.h               |   57 ++
 sys/sys/file.h                  |   10 +-
 sys/sys/timerfd.h               |   65 +++
 tests/lib/libc/sys/Makefile     |    8 +-
 tests/lib/libc/sys/t_eventfd.c  |  790 ++++++++++++++++++++++++++++++++++++++++
 tests/lib/libc/sys/t_timerfd.c  |  602 ++++++++++++++++++++++++++++++
 22 files changed, 3575 insertions(+), 30 deletions(-)

diffs (truncated from 3979 to 300 lines):

diff -r 16bd84c89af2 -r 8180114e2953 distrib/sets/lists/base/shl.mi
--- a/distrib/sets/lists/base/shl.mi    Sun Sep 19 11:43:54 2021 +0000
+++ b/distrib/sets/lists/base/shl.mi    Sun Sep 19 15:51:27 2021 +0000
@@ -1,4 +1,4 @@
-# $NetBSD: shl.mi,v 1.925 2021/09/02 11:28:45 christos Exp $
+# $NetBSD: shl.mi,v 1.926 2021/09/19 15:51:27 thorpej Exp $
 #
 # Note:        Don't delete entries from here - mark them as "obsolete" instead,
 #      unless otherwise stated below.
@@ -24,7 +24,7 @@
 ./lib/libblocklist.so.0.0                      base-sys-shlib          dynamicroot
 ./lib/libc.so                                  base-sys-shlib          dynamicroot
 ./lib/libc.so.12                               base-sys-shlib          dynamicroot
-./lib/libc.so.12.218                           base-sys-shlib          dynamicroot
+./lib/libc.so.12.219                           base-sys-shlib          dynamicroot
 ./lib/libcrypt.so                              base-sys-shlib          dynamicroot
 ./lib/libcrypt.so.1                            base-sys-shlib          dynamicroot
 ./lib/libcrypt.so.1.0                          base-sys-shlib          dynamicroot
@@ -251,7 +251,7 @@
 ./usr/lib/libc++.so.1.0                                base-sys-shlib          compatfile,libcxx
 ./usr/lib/libc.so                              base-sys-shlib          compatfile
 ./usr/lib/libc.so.12                           base-sys-shlib          compatfile
-./usr/lib/libc.so.12.218                       base-sys-shlib          compatfile
+./usr/lib/libc.so.12.219                       base-sys-shlib          compatfile
 ./usr/lib/libcbor.so                           base-sys-shlib          compatfile
 ./usr/lib/libcbor.so.0                         base-sys-shlib          compatfile
 ./usr/lib/libcbor.so.0.5                       base-sys-shlib          compatfile
diff -r 16bd84c89af2 -r 8180114e2953 distrib/sets/lists/comp/mi
--- a/distrib/sets/lists/comp/mi        Sun Sep 19 11:43:54 2021 +0000
+++ b/distrib/sets/lists/comp/mi        Sun Sep 19 15:51:27 2021 +0000
@@ -1,4 +1,4 @@
-#      $NetBSD: mi,v 1.2392 2021/09/16 23:32:49 christos Exp $
+#      $NetBSD: mi,v 1.2393 2021/09/19 15:51:27 thorpej Exp $
 #
 # Note: don't delete entries from here - mark them as "obsolete" instead.
 ./etc/mtree/set.comp                           comp-sys-root
@@ -3279,6 +3279,7 @@
 ./usr/include/sys/errno.h                      comp-c-include
 ./usr/include/sys/evcnt.h                      comp-c-include
 ./usr/include/sys/event.h                      comp-c-include
+./usr/include/sys/eventfd.h                    comp-c-include
 ./usr/include/sys/exec.h                       comp-c-include
 ./usr/include/sys/exec_aout.h                  comp-c-include
 ./usr/include/sys/exec_coff.h                  comp-c-include
@@ -3430,6 +3431,7 @@
 ./usr/include/sys/time.h                       comp-c-include
 ./usr/include/sys/timeb.h                      comp-c-include
 ./usr/include/sys/timepps.h                    comp-c-include
+./usr/include/sys/timerfd.h                    comp-c-include
 ./usr/include/sys/times.h                      comp-c-include
 ./usr/include/sys/timespec.h                   comp-c-include
 ./usr/include/sys/timex.h                      comp-c-include
@@ -4659,6 +4661,9 @@
 ./usr/share/man/cat2/dup2.0                    comp-c-catman           .cat
 ./usr/share/man/cat2/dup3.0                    comp-c-catman           .cat
 ./usr/share/man/cat2/errno.0                   comp-c-catman           .cat
+./usr/share/man/cat2/eventfd.0                 comp-c-catman           .cat
+./usr/share/man/cat2/eventfd_read.0            comp-c-catman           .cat
+./usr/share/man/cat2/eventfd_write.0           comp-c-catman           .cat
 ./usr/share/man/cat2/execve.0                  comp-c-catman           .cat
 ./usr/share/man/cat2/extattr_delete_fd.0       comp-c-catman           .cat
 ./usr/share/man/cat2/extattr_delete_file.0     comp-c-catman           .cat
@@ -4897,6 +4902,10 @@
 ./usr/share/man/cat2/timer_getoverrun.0                comp-c-catman           .cat
 ./usr/share/man/cat2/timer_gettime.0           comp-c-catman           .cat
 ./usr/share/man/cat2/timer_settime.0           comp-c-catman           .cat
+./usr/share/man/cat2/timerfd.0                 comp-c-catman           .cat
+./usr/share/man/cat2/timerfd_create.0          comp-c-catman           .cat
+./usr/share/man/cat2/timerfd_gettime.0         comp-c-catman           .cat
+./usr/share/man/cat2/timerfd_settime.0         comp-c-catman           .cat
 ./usr/share/man/cat2/truncate.0                        comp-c-catman           .cat
 ./usr/share/man/cat2/ucontext.0                        comp-c-catman           .cat
 ./usr/share/man/cat2/umask.0                   comp-c-catman           .cat
@@ -12994,6 +13003,9 @@
 ./usr/share/man/html2/dup2.html                        comp-c-htmlman          html
 ./usr/share/man/html2/dup3.html                        comp-c-htmlman          html
 ./usr/share/man/html2/errno.html               comp-c-htmlman          html
+./usr/share/man/html2/eventfd.html             comp-c-htmlman          html
+./usr/share/man/html2/eventfd_read.html                comp-c-htmlman          html
+./usr/share/man/html2/eventfd_write.html       comp-c-htmlman          html
 ./usr/share/man/html2/execve.html              comp-c-htmlman          html
 ./usr/share/man/html2/extattr_delete_fd.html   comp-c-htmlman          html
 ./usr/share/man/html2/extattr_delete_file.html comp-c-htmlman          html
@@ -13218,6 +13230,10 @@
 ./usr/share/man/html2/timer_getoverrun.html    comp-c-htmlman          html
 ./usr/share/man/html2/timer_gettime.html       comp-c-htmlman          html
 ./usr/share/man/html2/timer_settime.html       comp-c-htmlman          html
+./usr/share/man/html2/timerfd.html             comp-c-htmlman          html
+./usr/share/man/html2/timerfd_create.html      comp-c-htmlman          html
+./usr/share/man/html2/timerfd_gettime.html     comp-c-htmlman          html
+./usr/share/man/html2/timerfd_settime.html     comp-c-htmlman          html
 ./usr/share/man/html2/truncate.html            comp-c-htmlman          html
 ./usr/share/man/html2/ucontext.html            comp-c-htmlman          html
 ./usr/share/man/html2/umask.html               comp-c-htmlman          html
@@ -21146,6 +21162,9 @@
 ./usr/share/man/man2/dup2.2                    comp-c-man              .man
 ./usr/share/man/man2/dup3.2                    comp-c-man              .man
 ./usr/share/man/man2/errno.2                   comp-c-man              .man
+./usr/share/man/man2/eventfd.2                 comp-c-man              .man
+./usr/share/man/man2/eventfd_read.2            comp-c-man              .man
+./usr/share/man/man2/eventfd_write.2           comp-c-man              .man
 ./usr/share/man/man2/execve.2                  comp-c-man              .man
 ./usr/share/man/man2/extattr_delete_fd.2       comp-c-man              .man
 ./usr/share/man/man2/extattr_delete_file.2     comp-c-man              .man
@@ -21382,6 +21401,10 @@
 ./usr/share/man/man2/timer_getoverrun.2                comp-c-man              .man
 ./usr/share/man/man2/timer_gettime.2           comp-c-man              .man
 ./usr/share/man/man2/timer_settime.2           comp-c-man              .man
+./usr/share/man/man2/timerfd.2                 comp-c-man              .man
+./usr/share/man/man2/timerfd_create.2          comp-c-man              .man
+./usr/share/man/man2/timerfd_gettime.2         comp-c-man              .man
+./usr/share/man/man2/timerfd_settime.2         comp-c-man              .man
 ./usr/share/man/man2/truncate.2                        comp-c-man              .man
 ./usr/share/man/man2/ucontext.2                        comp-c-man              .man
 ./usr/share/man/man2/umask.2                   comp-c-man              .man
diff -r 16bd84c89af2 -r 8180114e2953 distrib/sets/lists/debug/mi
--- a/distrib/sets/lists/debug/mi       Sun Sep 19 11:43:54 2021 +0000
+++ b/distrib/sets/lists/debug/mi       Sun Sep 19 15:51:27 2021 +0000
@@ -1,4 +1,4 @@
-# $NetBSD: mi,v 1.360 2021/08/29 09:54:18 christos Exp $
+# $NetBSD: mi,v 1.361 2021/09/19 15:51:28 thorpej Exp $
 ./etc/mtree/set.debug                           comp-sys-root
 ./usr/lib                                      comp-sys-usr            compatdir
 ./usr/lib/i18n/libBIG5_g.a                     comp-c-debuglib         debuglib,compatfile
@@ -2157,6 +2157,7 @@
 ./usr/libdata/debug/usr/tests/lib/libc/sys/t_connect.debug             tests-lib-debug         debug,atf,compattestfile
 ./usr/libdata/debug/usr/tests/lib/libc/sys/t_context.debug             tests-obsolete          obsolete,compattestfile
 ./usr/libdata/debug/usr/tests/lib/libc/sys/t_dup.debug                 tests-lib-debug         debug,atf,compattestfile
+./usr/libdata/debug/usr/tests/lib/libc/sys/t_eventfd.debug             tests-lib-debug         debug,atf,compattestfile
 ./usr/libdata/debug/usr/tests/lib/libc/sys/t_fork.debug                        tests-lib-debug         debug,atf,compattestfile
 ./usr/libdata/debug/usr/tests/lib/libc/sys/t_fsync.debug               tests-lib-debug         debug,atf,compattestfile
 ./usr/libdata/debug/usr/tests/lib/libc/sys/t_futex_ops.debug                   tests-lib-tests         debug,atf,compattestfile
@@ -2224,6 +2225,7 @@
 ./usr/libdata/debug/usr/tests/lib/libc/sys/t_swapcontext.debug         tests-lib-debug         debug,atf,compattestfile
 ./usr/libdata/debug/usr/tests/lib/libc/sys/t_syscall.debug             tests-lib-debug         debug,atf,compattestfile
 ./usr/libdata/debug/usr/tests/lib/libc/sys/t_timer_create.debug                tests-lib-debug         debug,atf,compattestfile
+./usr/libdata/debug/usr/tests/lib/libc/sys/t_timerfd.debug             tests-lib-debug         debug,atf,compattestfile
 ./usr/libdata/debug/usr/tests/lib/libc/sys/t_truncate.debug            tests-lib-debug         debug,atf,compattestfile
 ./usr/libdata/debug/usr/tests/lib/libc/sys/t_ucontext.debug            tests-lib-debug         debug,atf,compattestfile
 ./usr/libdata/debug/usr/tests/lib/libc/sys/t_umask.debug               tests-lib-debug         debug,atf,compattestfile
diff -r 16bd84c89af2 -r 8180114e2953 distrib/sets/lists/debug/shl.mi
--- a/distrib/sets/lists/debug/shl.mi   Sun Sep 19 11:43:54 2021 +0000
+++ b/distrib/sets/lists/debug/shl.mi   Sun Sep 19 15:51:27 2021 +0000
@@ -1,10 +1,10 @@
-# $NetBSD: shl.mi,v 1.282 2021/09/02 11:28:45 christos Exp $
+# $NetBSD: shl.mi,v 1.283 2021/09/19 15:51:28 thorpej Exp $
 ./usr/lib/libbfd_g.a                                           comp-c-debuglib debuglib,compatfile,binutils
 ./usr/libdata/debug/lib                                                base-sys-usr    debug,dynamicroot,compatdir
 ./usr/libdata/debug/lib/libavl.so.0.0.debug                    comp-zfs-debug  debug,dynamicroot,zfs
 ./usr/libdata/debug/lib/libblacklist.so.0.0.debug              comp-obsolete   obsolete,compatfile
 ./usr/libdata/debug/lib/libblocklist.so.0.0.debug              comp-sys-debug  debug,dynamicroot
-./usr/libdata/debug/lib/libc.so.12.218.debug                   comp-sys-debug  debug,dynamicroot
+./usr/libdata/debug/lib/libc.so.12.219.debug                   comp-sys-debug  debug,dynamicroot
 ./usr/libdata/debug/lib/libcrypt.so.1.0.debug                  comp-sys-debug  debug,dynamicroot
 ./usr/libdata/debug/lib/libcrypto.so.12.0.debug                        comp-sys-debug  debug,dynamicroot,openssl=10
 ./usr/libdata/debug/lib/libcrypto.so.14.0.debug                        comp-sys-debug  debug,dynamicroot,openssl=11
@@ -84,7 +84,7 @@
 ./usr/libdata/debug/usr/lib/libbsdmalloc.so.0.0.debug          comp-sys-debug  debug,compatfile
 ./usr/libdata/debug/usr/lib/libbz2.so.1.1.debug                        comp-sys-debug  debug,compatfile
 ./usr/libdata/debug/usr/lib/libc++.so.1.0.debug                        comp-sys-debug  debug,compatfile,libcxx
-./usr/libdata/debug/usr/lib/libc.so.12.218.debug               comp-sys-debug  debug,compatfile
+./usr/libdata/debug/usr/lib/libc.so.12.219.debug               comp-sys-debug  debug,compatfile
 ./usr/libdata/debug/usr/lib/libcbor.so.0.5.debug               comp-sys-debug  debug,compatfile
 ./usr/libdata/debug/usr/lib/libcom_err.so.8.0.debug            comp-krb5-debug debug,compatfile,kerberos
 ./usr/libdata/debug/usr/lib/libcrypt.so.1.0.debug              comp-sys-debug  debug,compatfile
diff -r 16bd84c89af2 -r 8180114e2953 distrib/sets/lists/tests/mi
--- a/distrib/sets/lists/tests/mi       Sun Sep 19 11:43:54 2021 +0000
+++ b/distrib/sets/lists/tests/mi       Sun Sep 19 15:51:27 2021 +0000
@@ -1,4 +1,4 @@
-# $NetBSD: mi,v 1.1125 2021/09/13 22:09:06 rillig Exp $
+# $NetBSD: mi,v 1.1126 2021/09/19 15:51:28 thorpej Exp $
 #
 # Note: don't delete entries from here - mark them as "obsolete" instead.
 #
@@ -3145,6 +3145,7 @@
 ./usr/tests/lib/libc/sys/t_connect                     tests-lib-tests         compattestfile,atf
 ./usr/tests/lib/libc/sys/t_context                     tests-obsolete          obsolete
 ./usr/tests/lib/libc/sys/t_dup                         tests-lib-tests         compattestfile,atf
+./usr/tests/lib/libc/sys/t_eventfd                     tests-lib-tests         compattestfile,atf
 ./usr/tests/lib/libc/sys/t_fork                                tests-lib-tests         compattestfile,atf
 ./usr/tests/lib/libc/sys/t_fsync                       tests-lib-tests         compattestfile,atf
 ./usr/tests/lib/libc/sys/t_futex_ops                   tests-lib-tests         compattestfile,atf
@@ -3212,6 +3213,7 @@
 ./usr/tests/lib/libc/sys/t_swapcontext                 tests-lib-tests         compattestfile,atf
 ./usr/tests/lib/libc/sys/t_syscall                     tests-lib-tests         compattestfile,atf
 ./usr/tests/lib/libc/sys/t_timer_create                        tests-lib-tests         compattestfile,atf
+./usr/tests/lib/libc/sys/t_timerfd                     tests-lib-tests         compattestfile,atf
 ./usr/tests/lib/libc/sys/t_truncate                    tests-lib-tests         compattestfile,atf
 ./usr/tests/lib/libc/sys/t_ucontext                    tests-lib-tests         compattestfile,atf
 ./usr/tests/lib/libc/sys/t_umask                       tests-lib-tests         compattestfile,atf
diff -r 16bd84c89af2 -r 8180114e2953 lib/libc/shlib_version
--- a/lib/libc/shlib_version    Sun Sep 19 11:43:54 2021 +0000
+++ b/lib/libc/shlib_version    Sun Sep 19 15:51:27 2021 +0000
@@ -1,4 +1,4 @@
-#      $NetBSD: shlib_version,v 1.291 2020/10/09 18:38:48 christos Exp $
+#      $NetBSD: shlib_version,v 1.292 2021/09/19 15:51:28 thorpej Exp $
 #      Remember to update distrib/sets/lists/base/shl.* when changing
 #
 # things we wish to do on next major version bump:
@@ -54,4 +54,4 @@
 # - the syscall stubs for the (obsolete) lfs syscalls should be removed
 # - remove tzsetwall(3), upstream has removed it
 major=12
-minor=218
+minor=219
diff -r 16bd84c89af2 -r 8180114e2953 lib/libc/sys/Makefile.inc
--- a/lib/libc/sys/Makefile.inc Sun Sep 19 11:43:54 2021 +0000
+++ b/lib/libc/sys/Makefile.inc Sun Sep 19 15:51:27 2021 +0000
@@ -1,4 +1,4 @@
-#      $NetBSD: Makefile.inc,v 1.245 2020/08/14 00:53:16 riastradh Exp $
+#      $NetBSD: Makefile.inc,v 1.246 2021/09/19 15:51:28 thorpej Exp $
 #      @(#)Makefile.inc        8.3 (Berkeley) 10/24/94
 
 # sys sources
@@ -7,9 +7,10 @@
 # other sources shared with the kernel, used in syscalls
 SRCS+= cpuset.c
 # glue to offer userland wrappers for some syscalls
-SRCS+= accept4.c clock_getcpuclockid.c posix_fadvise.c posix_madvise.c \
-       ppoll.c sched.c sigqueue.c sigtimedwait.c sigwait.c sigwaitinfo.c \
-       statvfs.c swapon.c semctl.c vadvise.c
+SRCS+= accept4.c clock_getcpuclockid.c eventfd_read.c eventfd_write.c \
+       posix_fadvise.c posix_madvise.c ppoll.c sched.c sigqueue.c \
+       sigtimedwait.c sigwait.c sigwaitinfo.c statvfs.c swapon.c semctl.c \
+       vadvise.c
 
 .if ${RUMPRUN} != "yes"
 # modules with non-default implementations on at least one architecture:
@@ -100,6 +101,7 @@
                clock_getcpuclockid2.S \
                __clock_getres50.S __clock_gettime50.S \
        dup.S dup2.S dup3.S \
+       eventfd.S \
        extattrctl.S \
                extattr_delete_fd.S extattr_delete_file.S \
                extattr_delete_link.S extattr_get_fd.S extattr_get_file.S \
@@ -154,6 +156,7 @@
                __statvfs190.S swapctl.S symlink.S symlinkat.S __sysctl.S \
        timer_create.S timer_delete.S __timer_gettime50.S timer_getoverrun.S \
                ____semctl50.S __timer_settime50.S \
+       timerfd_create.S timerfd_gettime.S timerfd_settime.S \
        umask.S undelete.S unlink.S unlinkat.S unmount.S __utimes50.S \
                utimensat.S utrace.S uuidgen.S
 
@@ -251,7 +254,7 @@
 MAN+=  accept.2 access.2 acct.2 adjtime.2 bind.2 brk.2 chdir.2 \
        chflags.2 chmod.2 chown.2 chroot.2 clock_getcpuclockid2.2 \
        clock_settime.2 clone.2 close.2 \
-       connect.2 dup.2 execve.2 _exit.2 extattr_get_file.2 \
+       connect.2 dup.2 eventfd.2 execve.2 _exit.2 extattr_get_file.2 \
        fcntl.2 fdatasync.2 fdiscard.2 fhopen.2 \
        flock.2 fork.2 fsync.2 getcontext.2 getdents.2 \
        getfh.2 getvfsstat.2 getgid.2 getgroups.2 \
@@ -284,7 +287,7 @@
        socket.2 \
        socketpair.2 stat.2 statvfs.2 swapctl.2 swapon.3 symlink.2 \
        sync.2 sysarch.2 syscall.2 timer_create.2 timer_delete.2 \
-       timer_settime.2 truncate.2 umask.2 undelete.2 \
+       timer_settime.2 timerfd.2 truncate.2 umask.2 undelete.2 \
        unlink.2 utimes.2 utrace.2 uuidgen.2 vfork.2 wait.2 write.2
 
 MLINKS+=_exit.2 _Exit.2
@@ -299,6 +302,8 @@
 MLINKS+=chroot.2 fchroot.2
 MLINKS+=clock_settime.2 clock_gettime.2
 MLINKS+=clock_settime.2 clock_getres.2
+MLINKS+=eventfd.2 eventfd_read.2 \
+       eventfd.2 eventfd_write.2
 MLINKS+=extattr_get_file.2 extattr_set_file.2 \
        extattr_get_file.2 extattr_delete_file.2 \
        extattr_get_file.2 extattr_list_file.2 \
@@ -380,6 +385,9 @@
 MLINKS+=statvfs.2 statvfs1.2
 MLINKS+=statvfs.2 fstatvfs1.2
 MLINKS+=syscall.2 __syscall.2
+MLINKS+=timerfd.2 timerfd_create.2 \
+       timerfd.2 timerfd_gettime.2 \
+       timerfd.2 timerfd_settime.2
 MLINKS+=truncate.2 ftruncate.2
 MLINKS+=unlink.2 unlinkat.2
 MLINKS+=utimes.2 futimes.2 utimes.2 lutimes.2
diff -r 16bd84c89af2 -r 8180114e2953 lib/libc/sys/eventfd.2
--- /dev/null   Thu Jan 01 00:00:00 1970 +0000
+++ b/lib/libc/sys/eventfd.2    Sun Sep 19 15:51:27 2021 +0000
@@ -0,0 +1,271 @@
+.\"     $NetBSD: eventfd.2,v 1.1 2021/09/19 15:51:28 thorpej Exp $
+.\"
+.\" Copyright (c) 2021 The NetBSD Foundation, Inc.
+.\" All rights reserved.
+.\"
+.\" This code is derived from software contributed to The NetBSD Foundation
+.\" by Jason R. Thorpe.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\" notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\" notice, this list of conditions and the following disclaimer in the



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