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Upgrading sync

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Change-Id: Ied34ebd1d2dc963f5a2af8fc3bbf8e6c94df61cf
This commit is contained in:
Lionel Sambuc 2013-01-30 19:11:42 +01:00
parent b7ef8cfb52
commit 5f59a986e2
11 changed files with 145 additions and 60 deletions
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4
bin/Makefile
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@ -1,7 +1,7 @@
# $NetBSD: Makefile,v 1.22 2007/12/31 15:31:24 ad Exp $
# @(#)Makefile 8.1 (Berkeley) 5/31/93
SUBDIR= cat date echo ed expr kill ln \
mkdir pax pwd rm rmdir test
SUBDIR= cat date echo ed expr kill ln ls \
mkdir pax pwd rm rmdir sync test
.include <bsd.subdir.mk>

7
bin/sync/Makefile Normal file
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@ -0,0 +1,7 @@
# $NetBSD: Makefile,v 1.9 1997/07/20 22:38:07 christos Exp $
# @(#)Makefile 8.1 (Berkeley) 5/31/93
PROG= sync
MAN= sync.8
.include <bsd.prog.mk>

72
bin/sync/sync.8 Normal file
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@ -0,0 +1,72 @@
.\" $NetBSD: sync.8,v 1.15 2003/08/07 09:05:42 agc Exp $
.\"
.\" Copyright (c) 1980, 1991, 1993
.\" The Regents of the University of California. All rights reserved.
.\"
.\" 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
.\" documentation and/or other materials provided with the distribution.
.\" 3. Neither the name of the University nor the names of its contributors
.\" may be used to endorse or promote products derived from this software
.\" without specific prior written permission.
.\"
.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
.\" SUCH DAMAGE.
.\"
.\" @(#)sync.8 8.1 (Berkeley) 5/31/93
.\"
.Dd May 31, 1993
.Dt SYNC 8
.Os
.Sh NAME
.Nm sync
.Nd force completion of pending disk writes (flush cache)
.Sh SYNOPSIS
.Nm
.Sh DESCRIPTION
The
.Nm
program can be called to ensure that all disk writes have been
completed before the processor is halted in a way not suitably done by
.Xr reboot 8
or
.Xr halt 8 .
Generally, it is preferable to use
.Xr reboot 8
or
.Xr halt 8
to shut down the system,
as they may perform additional actions
such as resynchronizing the hardware clock
and flushing internal caches before performing a final
.Nm .
.Pp
The
.Nm
program simply invokes the
.Xr sync 2
system call.
.Sh SEE ALSO
.Xr fsync 2 ,
.Xr sync 2 ,
.Xr halt 8 ,
.Xr reboot 8
.Sh HISTORY
A
.Nm
command appeared in
.At v6 .

59
bin/sync/sync.c Normal file
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@ -0,0 +1,59 @@
/* $NetBSD: sync.c,v 1.13 2008/07/20 00:52:40 lukem Exp $ */
/*
* Copyright (c) 1987, 1993
* The Regents of the University of California. All rights reserved.
*
* 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
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#include <sys/cdefs.h>
#ifndef lint
__COPYRIGHT("@(#) Copyright (c) 1987, 1993\
The Regents of the University of California. All rights reserved.");
#endif /* not lint */
#ifndef lint
#if 0
static char sccsid[] = "@(#)sync.c 8.1 (Berkeley) 5/31/93";
#else
__RCSID("$NetBSD: sync.c,v 1.13 2008/07/20 00:52:40 lukem Exp $");
#endif
#endif /* not lint */
#include <stdlib.h>
#include <unistd.h>
int main(int, char *[]);
/* ARGSUSED */
int
main(int argc, char *argv[])
{
setprogname(argv[0]);
sync();
exit(0);
/* NOTREACHED */
}

2
commands/Makefile
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@ -24,7 +24,7 @@ SUBDIR= add_route arp ash at backup banner basename btrace cal \
reboot remsync rev rget rlogin \
rotate rsh rshd service setup shar acksize \
sleep slip spell split sprofalyze sprofdiff srccrc \
stty svclog svrctl swifi sync synctree sysenv \
stty svclog svrctl swifi synctree sysenv \
syslogd tail tcpd tcpdp tcpstat tee telnet \
telnetd term termcap tget time touch tr \
truncate tty udpstat umount uname unexpand \

5
commands/sync/Makefile
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@ -1,5 +0,0 @@
PROG= sync
BINDIR= /bin
MAN=
.include <bsd.prog.mk>

14
commands/sync/sync.c
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@ -1,14 +0,0 @@
/* sync - flush the file system buffers. Author: Andy Tanenbaum */
#include <sys/types.h>
#include <unistd.h>
int main(void);
int main()
{
/* First prize in shortest useful program contest. */
/* Highest comment/code ratio */
sync();
return(0);
}

4
drivers/ramdisk/Makefile
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@ -58,8 +58,8 @@ PROG_DRIVERS+= acpi
.if ${MACHINE_ARCH} == "earm"
EXTRA+= rc.arm mylogin.sh ttys
PROG_DRIVERS+= mmc tty gpio
PROG_COMMANDS+= cp dd getty time sync sleep stty umount
PROG_BIN+= cat ls rm
PROG_COMMANDS+= cp dd getty time sleep stty umount
PROG_BIN+= cat ls rm sync
PROTO= proto.arm.small
.endif # ${MACHINE_ARCH} == "earm"

2
man/man8/Makefile
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@ -8,7 +8,7 @@ MAN= add_route.8 backup.8 boot.8 btrace.8 \
poweroff.8 printroot.8 pr_routes.8 pwdauth.8 rarpd.8 \
rdate.8 readclock.8 reboot.8 repartition.8 \
rshd.8 screendump.8 serial-ip.8 service.8 \
setup.8 shutdown.8 slip.8 srccrc.8 sync.8 syslogd.8 tcpd.8 \
setup.8 shutdown.8 slip.8 srccrc.8 syslogd.8 tcpd.8 \
unix.8 update.8 usage.8 vbfs.8
MLINKS += httpd.8 in.httpd.8

35
man/man8/sync.8
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@ -1,35 +0,0 @@
.TH SYNC 8
.SH NAME
sync \- flush the cache to disk
.SH SYNOPSIS
\fBsync\fR
.br
.de FL
.TP
\\fB\\$1\\fR
\\$2
..
.de EX
.TP 20
\\fB\\$1\\fR
# \\$2
..
.SH EXAMPLES
.TP 20
.B sync
# Write out all modified cache blocks
.SH DESCRIPTION
.PP
\s-1MINIX 3\s-1
maintains a cache of recently used disk blocks.
The
.I sync
command writes any modified cache blocks back to the disk.
This is essential before stopping the system, and should be done before
running any
.I a.out
program that might crash.
.SH "SEE ALSO"
.BR sync (2),
.BR update (8),
.BR shutdown (8).

1
releasetools/nbsd_ports
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@ -21,6 +21,7 @@
2012/10/17 12:00:00,bin/pwd
2011/08/29 14:48:46,bin/rm
2011/08/29 14:49:38,bin/rmdir
2012/10/17 12:00:00,bin/sync
2012/10/17 12:00:00,bin/test
2012/10/17 12:00:00,build.sh
2012/10/17 12:00:00,common/dist/zlib