Imported Upstream version 2.02.79upstream/2.02.79

1 files changed, 62 insertions, 0 deletions

diff --git a/lib/format1/vg_number.c b/lib/format1/vg_number.c
new file mode 100644
index 0000000..47570f5
--- /dev/null
+++ b/lib/format1/vg_number.c
@@ -0,0 +1,62 @@
+/*
+ * Copyright (C) 2001-2004 Sistina Software, Inc. All rights reserved.
+ * Copyright (C) 2004-2006 Red Hat, Inc. All rights reserved.
+ *
+ * This file is part of LVM2.
+ *
+ * This copyrighted material is made available to anyone wishing to use,
+ * modify, copy, or redistribute it subject to the terms and conditions
+ * of the GNU Lesser General Public License v.2.1.
+ *
+ * You should have received a copy of the GNU Lesser 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
+ */
+
+#include "lib.h"
+#include "disk-rep.h"
+
+/*
+ * FIXME: Quick hack.  We can use caching to
+ * prevent a total re-read, even so vg_number
+ * causes the tools to check *every* pv.  Yuck.
+ * Put in separate file so it wouldn't contaminate
+ * other code.
+ */
+int get_free_vg_number(struct format_instance *fid, struct dev_filter *filter,
+		       const char *candidate_vg, int *result)
+{
+	struct dm_list all_pvs;
+	struct disk_list *dl;
+	struct dm_pool *mem = dm_pool_create("lvm1 vg_number", 10 * 1024);
+	int numbers[MAX_VG], i, r = 0;
+
+	dm_list_init(&all_pvs);
+
+	if (!mem)
+		return_0;
+
+	if (!read_pvs_in_vg(fid->fmt, NULL, filter, mem, &all_pvs))
+		goto_out;
+
+	memset(numbers, 0, sizeof(numbers));
+
+	dm_list_iterate_items(dl, &all_pvs) {
+		if (!*dl->pvd.vg_name || !strcmp((char *)dl->pvd.vg_name, candidate_vg))
+			continue;
+
+		numbers[dl->vgd.vg_number] = 1;
+	}
+
+	for (i = 0; i < MAX_VG; i++) {
+		if (!numbers[i]) {
+			r = 1;
+			*result = i;
+			break;
+		}
+	}
+
+      out:
+	dm_pool_destroy(mem);
+	return r;
+}