Adding upstream version 4.2.upstream/4.2

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 228 insertions, 0 deletions

diff --git a/Examine.c b/Examine.c
new file mode 100644
index 0000000..9574a3c
--- /dev/null
+++ b/Examine.c
@@ -0,0 +1,228 @@
+/*
+ * 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, "sparc2.2",
+					     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;
+}