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authorNeil Brown <neilb@suse.de>2002-03-08 00:03:52 +0000
committerNeil Brown <neilb@suse.de>2002-03-08 00:03:52 +0000
commit9a9dab3670110c2db7fe6f716977b72adedbf855 (patch)
treeaadc786bb3f847d7ff670b61d15fbb5ef6651c82 /Kill.c
parentcd29a5c835c11cbcedc10487677eac6a946ad61b (diff)
downloadmdadm-9a9dab3670110c2db7fe6f716977b72adedbf855.tar.gz
mdadm-9a9dab3670110c2db7fe6f716977b72adedbf855.tar.xz
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mdadm-0.7mdadm-0.7
Diffstat (limited to 'Kill.c')
-rw-r--r--Kill.c83
1 files changed, 83 insertions, 0 deletions
diff --git a/Kill.c b/Kill.c
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+/*
+ * mdadm - manage Linux "md" devices aka RAID arrays.
+ *
+ * Copyright (C) 2001-2002 Neil Brown <neilb@cse.unsw.edu.au>
+ *
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ *
+ * Author: Neil Brown
+ * Email: <neilb@cse.unsw.edu.au>
+ * Paper: Neil Brown
+ * School of Computer Science and Engineering
+ * The University of New South Wales
+ * Sydney, 2052
+ * Australia
+ *
+ * Added by Dale Stephenson
+ * steph@snapserver.com
+ */
+
+#include "mdadm.h"
+#include "md_u.h"
+#include "md_p.h"
+
+int Kill(char *dev, int force)
+{
+ /*
+ * Nothing fancy about Kill. It just zeroes out a superblock
+ * Definitely not safe.
+ */
+
+ mdp_super_t super;
+ int fd, rv = 0;
+
+ fd = open(dev, O_RDWR);
+ if (fd < 0) {
+ fprintf(stderr, Name ": Couldn't open %s for write - not zeroing\n",
+ dev);
+ return 1;
+ }
+ rv = load_super(fd, &super);
+ if (force && rv >= 5)
+ rv = 0; /* ignore bad data in superblock */
+ switch(rv) {
+ case 1:
+ fprintf(stderr, Name ": cannot file device size for %s: %s\n",
+ dev, strerror(errno));
+ break;
+ case 2:
+ fprintf(stderr, Name ": %s is too small for md.\n", dev);
+ break;
+ case 3:
+ case 4:
+ fprintf(stderr, Name ": cannot access superblock on %s.\n", dev);
+ break;
+ case 5:
+ case 6:
+ fprintf(stderr, Name ": %s does not appear to have an MD superblock.\n", dev);
+ break;
+ }
+ if (!rv) {
+ memset(&super, 0, sizeof(super));
+ if (store_super(fd, &super)) {
+ fprintf(stderr, Name ": Could not zero superblock on %s\n",
+ dev);
+ rv = 1;
+ }
+ }
+ close(fd);
+ return rv;
+}