Imported Upstream version 2.22upstream/2.22upstream

1 files changed, 67 insertions, 0 deletions

diff --git a/libblkid/samples/superblocks.c b/libblkid/samples/superblocks.c
new file mode 100644
index 0000000..20e39c9
--- /dev/null
+++ b/libblkid/samples/superblocks.c
@@ -0,0 +1,67 @@
+/*
+ * 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 <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;
+}