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add a new command, "keeplabel".

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This commit is contained in:
yamt 2002-07-01 18:49:57 +00:00
parent 369c050c12
commit e9ae5a9bbd
2 changed files with 62 additions and 2 deletions
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13
sbin/dkctl/dkctl.8
View File

@ -1,4 +1,4 @@
.\" $NetBSD: dkctl.8,v 1.2 2002/01/09 23:10:19 wiz Exp $
.\" $NetBSD: dkctl.8,v 1.3 2002/07/01 18:49:57 yamt Exp $
.\"
.\" Copyright 2002 Wasabi Systems, Inc.
.\" All rights reserved.
@ -88,6 +88,17 @@ write cache blocks to the media. If
is specified, the cache synchronization command will be issued even
if the kernel does not believe that there are any dirty cache blocks
in the disk's cache.
.Pp
.Nm keeplabel
.Op Ar yes | no
.Pp
Specify to keep or drop the in-core disklabel on the last close of
the disk device.
(Keep if
.Ar yes
is specified, drop if
.Ar no
is specified.)
.Sh SEE ALSO
.Xr ioctl 2 ,
.Xr sd 4 ,

51
sbin/dkctl/dkctl.c
View File

@ -1,4 +1,4 @@
/* $NetBSD: dkctl.c,v 1.1 2002/01/09 22:30:14 thorpej Exp $ */
/* $NetBSD: dkctl.c,v 1.2 2002/07/01 18:49:57 yamt Exp $ */
/*
* Copyright 2001 Wasabi Systems, Inc.
@ -51,6 +51,14 @@
#include <unistd.h>
#include <util.h>
#define YES 1
#define NO 0
/* I don't think nl_langinfo is suitable in this case */
#define YES_STR "yes"
#define NO_STR "no"
#define YESNO_ARG YES_STR " | " NO_STR
struct command {
const char *cmd_name;
const char *arg_names;
@ -67,9 +75,12 @@ char dvname_store[MAXPATHLEN]; /* for opendisk(3) */
const char *cmdname; /* command user issued */
const char *argnames; /* helpstring; expected arguments */
int yesno(const char *);
void disk_getcache(int, char *[]);
void disk_setcache(int, char *[]);
void disk_synccache(int, char *[]);
void disk_keeplabel(int, char *[]);
struct command commands[] = {
{ "getcache",
@ -87,6 +98,11 @@ struct command commands[] = {
disk_synccache,
O_RDWR },
{ "keeplabel",
YESNO_ARG,
disk_keeplabel,
O_RDWR },
{ NULL,
NULL,
NULL,
@ -225,3 +241,36 @@ disk_synccache(int argc, char *argv[])
if (ioctl(fd, DIOCCACHESYNC, &force) == -1)
err(1, "%s: sync cache", dvname);
}
void
disk_keeplabel(int argc, char *argv[])
{
int keep;
int yn;
if (argc != 1)
usage();
yn = yesno(argv[0]);
if (yn < 0)
usage();
keep = yn == YES;
if (ioctl(fd, DIOCKLABEL, &keep) == -1)
err(1, "%s: keep label", dvname);
}
/*
* return YES, NO or -1.
*/
int
yesno(const char *p)
{
if (!strcmp(p, YES_STR))
return YES;
if (!strcmp(p, NO_STR))
return NO;
return -1;
}