diff options
Diffstat (limited to 'Kill.c')
| -rw-r--r-- | Kill.c | 83 |
1 files changed, 83 insertions, 0 deletions
@@ -0,0 +1,83 @@ +/* + * 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; +} |