8a659c3321
Conflicts: Assemble.c Incremental.c Kill.c ReadMe.c inventory mapfile.c mdadm.8 mdadm.spec mdassemble.8
84 lines
2.2 KiB
C
84 lines
2.2 KiB
C
/*
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* mdadm - manage Linux "md" devices aka RAID arrays.
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*
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* Copyright (C) 2001-2006 Neil Brown <neilb@suse.de>
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*
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*
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* Author: Neil Brown
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* Email: <neilb@cse.unsw.edu.au>
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* Paper: Neil Brown
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* School of Computer Science and Engineering
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* The University of New South Wales
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* Sydney, 2052
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* Australia
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*
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* Added by Dale Stephenson
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* steph@snapserver.com
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*/
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#include "mdadm.h"
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#include "md_u.h"
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#include "md_p.h"
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int Kill(char *dev, int force, int quiet, int noexcl)
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{
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/*
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* Nothing fancy about Kill. It just zeroes out a superblock
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* Definitely not safe.
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*/
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int fd, rv = 0;
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struct supertype *st;
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if (force)
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noexcl = 1;
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fd = open(dev, O_RDWR|(force ? 0 : O_EXCL));
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if (fd < 0) {
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if (!quiet)
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fprintf(stderr, Name ": Couldn't open %s for write - not zeroing\n",
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dev);
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close(fd);
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return 1;
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}
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st = guess_super(fd);
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if (st == NULL) {
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if (!quiet)
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fprintf(stderr, Name ": Unrecognised md component device - %s\n", dev);
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close(fd);
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return 1;
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}
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rv = st->ss->load_super(st, fd, dev);
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if (force && rv >= 2)
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rv = 0; /* ignore bad data in superblock */
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if (rv== 0 || (force && rv >= 2)) {
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st->ss->free_super(st);
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st->ss->init_super(st, NULL, 0, "", NULL, NULL);
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if (st->ss->store_super(st, fd)) {
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if (!quiet)
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fprintf(stderr, Name ": Could not zero superblock on %s\n",
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dev);
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rv = 1;
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} else if (rv) {
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if (!quiet)
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fprintf(stderr, Name ": superblock zeroed anyway\n");
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rv = 0;
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}
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}
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close(fd);
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return rv;
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}
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