[src/trunk]: src/sbin/dkctl add a new command, "keeplabel".

[yamt <yamt%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/90f355ab6ef0
branches:  trunk
changeset: 533480:90f355ab6ef0
user:      yamt <yamt%NetBSD.org@localhost>
date:      Mon Jul 01 18:49:57 2002 +0000

description:
add a new command, "keeplabel".

diffstat:

 sbin/dkctl/dkctl.8 |  13 ++++++++++++-
 sbin/dkctl/dkctl.c |  51 ++++++++++++++++++++++++++++++++++++++++++++++++++-
 2 files changed, 62 insertions(+), 2 deletions(-)

diffs (113 lines):

diff -r 33974b7c4d02 -r 90f355ab6ef0 sbin/dkctl/dkctl.8
--- a/sbin/dkctl/dkctl.8        Mon Jul 01 18:25:09 2002 +0000
+++ b/sbin/dkctl/dkctl.8        Mon Jul 01 18:49:57 2002 +0000
@@ -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 @@
 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 ,
diff -r 33974b7c4d02 -r 90f355ab6ef0 sbin/dkctl/dkctl.c
--- a/sbin/dkctl/dkctl.c        Mon Jul 01 18:25:09 2002 +0000
+++ b/sbin/dkctl/dkctl.c        Mon Jul 01 18:49:57 2002 +0000
@@ -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 @@
 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 @@
          disk_synccache,
          O_RDWR },
 
+       { "keeplabel",
+         YESNO_ARG,
+         disk_keeplabel,
+         O_RDWR },
+
        { NULL,
          NULL,
          NULL,
@@ -225,3 +241,36 @@
        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;
+}