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/*
* mdadm - manage Linux "md" devices aka RAID arrays.
*
* Copyright (C) 2001-2013 Neil Brown <neilb@suse.de>
*
*
* 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@suse.de>
*/
#include "mdadm.h"
#include "dlink.h"
#if ! defined(__BIG_ENDIAN) && ! defined(__LITTLE_ENDIAN)
#error no endian defined
#endif
#include "md_u.h"
#include "md_p.h"
int Examine(struct mddev_dev *devlist,
struct context *c,
struct supertype *forcest)
{
/* Read the raid superblock from a device and
* display important content.
*
* If cannot be found, print reason: too small, bad magic
*
* Print:
* version, ctime, level, size, raid+spare+
* prefered minor
* uuid
*
* utime, state etc
*
* If (brief) gather devices for same array and just print a mdadm.conf
* line including devices=
* if devlist==NULL, use conf_get_devs()
*/
int fd;
int rv = 0;
struct array {
struct supertype *st;
struct mdinfo info;
void *devs;
struct array *next;
int spares;
} *arrays = NULL;
for (; devlist ; devlist = devlist->next) {
struct supertype *st;
int have_container = 0;
int err = 0;
int container = 0;
fd = dev_open(devlist->devname, O_RDONLY);
if (fd < 0) {
if (!c->scan) {
pr_err("cannot open %s: %s\n",
devlist->devname, strerror(errno));
rv = 1;
}
continue;
}
if (forcest)
st = dup_super(forcest);
else if (must_be_container(fd)) {
/* might be a container */
st = super_by_fd(fd, NULL);
container = 1;
} else
st = guess_super(fd);
if (st) {
err = 1;
st->ignore_hw_compat = 1;
if (!container)
err = st->ss->load_super(st, fd,
(c->brief||c->scan) ? NULL
:devlist->devname);
if (err && st->ss->load_container) {
err = st->ss->load_container(st, fd,
(c->brief||c->scan) ? NULL
:devlist->devname);
if (!err)
have_container = 1;
}
st->ignore_hw_compat = 0;
} else {
if (!c->brief) {
pr_err("No md superblock detected on %s.\n", devlist->devname);
rv = 1;
}
err = 1;
}
close(fd);
if (err) {
if (st)
st->ss->free_super(st);
continue;
}
if (c->SparcAdjust)
st->ss->update_super(st, NULL, UOPT_SPARC22,
devlist->devname, 0, 0, NULL);
/* Ok, its good enough to try, though the checksum could be wrong */
if (c->brief && st->ss->brief_examine_super == NULL) {
if (!c->scan)
pr_err("No brief listing for %s on %s\n",
st->ss->name, devlist->devname);
} else if (c->brief) {
struct array *ap;
char *d;
for (ap = arrays; ap; ap = ap->next) {
if (st->ss == ap->st->ss &&
st->ss->compare_super(ap->st, st, 0) == 0)
break;
}
if (!ap) {
ap = xmalloc(sizeof(*ap));
ap->devs = dl_head();
ap->next = arrays;
ap->spares = 0;
ap->st = st;
arrays = ap;
st->ss->getinfo_super(st, &ap->info, NULL);
} else
st->ss->getinfo_super(st, &ap->info, NULL);
if (!have_container &&
!(ap->info.disk.state & (1<<MD_DISK_SYNC)))
ap->spares++;
d = dl_strdup(devlist->devname);
dl_add(ap->devs, d);
} else if (c->export) {
if (st->ss->export_examine_super)
st->ss->export_examine_super(st);
st->ss->free_super(st);
} else {
printf("%s:\n",devlist->devname);
st->ss->examine_super(st, c->homehost);
st->ss->free_super(st);
}
}
if (c->brief) {
struct array *ap;
for (ap = arrays; ap; ap = ap->next) {
char sep='=';
char *d;
int newline = 0;
ap->st->ss->brief_examine_super(ap->st, c->verbose > 0);
if (ap->spares && !ap->st->ss->external)
newline += printf(" spares=%d", ap->spares);
if (c->verbose > 0) {
newline += printf(" devices");
for (d = dl_next(ap->devs);
d != ap->devs;
d=dl_next(d)) {
printf("%c%s", sep, d);
sep=',';
}
}
if (ap->st->ss->brief_examine_subarrays) {
if (newline)
printf("\n");
ap->st->ss->brief_examine_subarrays(ap->st, c->verbose);
}
ap->st->ss->free_super(ap->st);
/* FIXME free ap */
if (ap->spares || c->verbose > 0)
printf("\n");
}
}
return rv;
}
int ExamineBadblocks(char *devname, int brief, struct supertype *forcest)
{
int fd = dev_open(devname, O_RDONLY);
struct supertype *st = forcest;
int err = 1;
if (fd < 0) {
pr_err("cannot open %s: %s\n", devname, strerror(errno));
return 1;
}
if (!st)
st = guess_super(fd);
if (!st) {
if (!brief)
pr_err("No md superblock detected on %s\n", devname);
goto out;
}
if (!st->ss->examine_badblocks) {
pr_err("%s metadata does not support badblocks\n", st->ss->name);
goto out;
}
err = st->ss->load_super(st, fd, brief ? NULL : devname);
if (err)
goto out;
err = st->ss->examine_badblocks(st, fd, devname);
out:
if (fd >= 0)
close(fd);
if (st) {
st->ss->free_super(st);
free(st);
}
return err;
}
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