From: Karel Zak <kzak@redhat.com>
Date: Thu, 4 Feb 2010 20:18:34 +0000 (+0100)
Subject: wipefs: ignore devices with partition table
X-Git-Url: https://err.no/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=269c1a2a6407a20e52aea4f4814d12655ff06e09;p=util-linux

wipefs: ignore devices with partition table

Signed-off-by: Karel Zak <kzak@redhat.com>
---

diff --git a/misc-utils/wipefs.c b/misc-utils/wipefs.c
index a59b5d72..f735065d 100644
--- a/misc-utils/wipefs.c
+++ b/misc-utils/wipefs.c
@@ -190,13 +190,27 @@ static struct wipe_desc *
 read_offsets(struct wipe_desc *wp, const char *fname, int zap)
 {
 	blkid_probe pr;
+	int rc;
 
 	if (!fname)
 		return NULL;
 
 	pr = blkid_new_probe_from_filename(fname);
 	if (!pr)
-		errx(EXIT_FAILURE, _("probing initialization failed"));
+		errx(EXIT_FAILURE, _("error: %s: probing initialization failed"), fname);
+
+	blkid_probe_enable_superblocks(pr, 0);	/* enabled by default ;-( */
+
+	blkid_probe_enable_partitions(pr, 1);
+	rc = blkid_do_fullprobe(pr);
+	blkid_probe_enable_partitions(pr, 0);
+
+	if (rc == 0) {
+		const char *type = NULL;
+		blkid_probe_lookup_value(pr, "PTTYPE", &type, NULL);
+		errx(EXIT_FAILURE, _("error: %s: appears to contain '%s' "
+				"partition table"), fname, type);
+	}
 
 	blkid_probe_enable_superblocks(pr, 1);
 	blkid_probe_set_superblocks_flags(pr, BLKID_SUBLKS_MAGIC |