From 949130cbdfa8fd2db80940227b1c4a03c50a29aa Mon Sep 17 00:00:00 2001
From: Karel Zak <kzak@redhat.com>
Date: Mon, 2 Nov 2009 14:59:23 +0100
Subject: [PATCH] libblkid: add superblocks.c sample

Signed-off-by: Karel Zak <kzak@redhat.com>
---
 shlibs/blkid/samples/.gitignore    |  1 +
 shlibs/blkid/samples/Makefile.am   |  2 +-
 shlibs/blkid/samples/superblocks.c | 68 ++++++++++++++++++++++++++++++
 3 files changed, 70 insertions(+), 1 deletion(-)
 create mode 100644 shlibs/blkid/samples/superblocks.c

diff --git a/shlibs/blkid/samples/.gitignore b/shlibs/blkid/samples/.gitignore
index 5ee57393..409e5cff 100644
--- a/shlibs/blkid/samples/.gitignore
+++ b/shlibs/blkid/samples/.gitignore
@@ -1,3 +1,4 @@
 topology
 partitions
 mkfs
+superblocks
diff --git a/shlibs/blkid/samples/Makefile.am b/shlibs/blkid/samples/Makefile.am
index cca01de0..f7458616 100644
--- a/shlibs/blkid/samples/Makefile.am
+++ b/shlibs/blkid/samples/Makefile.am
@@ -3,5 +3,5 @@ include $(top_srcdir)/config/include-Makefile.am
 AM_CPPFLAGS += -I$(ul_libblkid_srcdir)
 AM_LDFLAGS += $(ul_libblkid_la)
 
-noinst_PROGRAMS = topology partitions mkfs
+noinst_PROGRAMS = topology partitions mkfs superblocks
 
diff --git a/shlibs/blkid/samples/superblocks.c b/shlibs/blkid/samples/superblocks.c
new file mode 100644
index 00000000..276c29e6
--- /dev/null
+++ b/shlibs/blkid/samples/superblocks.c
@@ -0,0 +1,68 @@
+/*
+ * Copyright (C) 2009 Karel Zak <kzak@redhat.com>
+ *
+ * This file may be redistributed under the terms of the
+ * GNU Lesser General Public License.
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+#include <err.h>
+#include <errno.h>
+
+#include <blkid.h>
+
+#include "c.h"
+
+int main(int argc, char *argv[])
+{
+	int rc;
+	char *devname;
+	blkid_probe pr;
+
+	if (argc < 2) {
+		fprintf(stderr, "usage: %s <device>  "
+				"-- prints superblocks details about the device\n",
+				program_invocation_short_name);
+		return EXIT_FAILURE;
+	}
+
+	devname = argv[1];
+	pr = blkid_new_probe_from_filename(devname);
+	if (!pr)
+		err(EXIT_FAILURE, "%s: faild to create a new libblkid probe",
+				devname);
+
+	/* enable topology probing */
+	blkid_probe_enable_superblocks(pr, TRUE);
+
+	/* set all flags */
+	blkid_probe_set_superblocks_flags(pr,
+			BLKID_SUBLKS_LABEL | BLKID_SUBLKS_LABELRAW |
+			BLKID_SUBLKS_UUID | BLKID_SUBLKS_UUIDRAW |
+			BLKID_SUBLKS_TYPE | BLKID_SUBLKS_SECTYPE |
+			BLKID_SUBLKS_USAGE | BLKID_SUBLKS_VERSION |
+			BLKID_SUBLKS_MAGIC);
+
+	rc = blkid_do_safeprobe(pr);
+	if (rc == -1)
+		errx(EXIT_FAILURE, "%s: blkid_do_safeprobe() failed", devname);
+	else if (rc == 1)
+		warnx("%s: cannot gather information about superblocks", devname);
+	else {
+		int i, nvals = blkid_probe_numof_values(pr);
+
+		for (i = 0; i < nvals; i++) {
+			const char *name, *data;
+
+			blkid_probe_get_value(pr, i, &name, &data, NULL);
+			printf("\t%s = %s\n", name, data);
+		}
+	}
+
+	blkid_free_probe(pr);
+	return EXIT_SUCCESS;
+}
-- 
2.39.5