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-rw-r--r--libblkid/samples/mkfs.c78
1 files changed, 78 insertions, 0 deletions
diff --git a/libblkid/samples/mkfs.c b/libblkid/samples/mkfs.c
new file mode 100644
index 000000000..5c3ebe79e
--- /dev/null
+++ b/libblkid/samples/mkfs.c
@@ -0,0 +1,78 @@
+/*
+ * 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;
+ blkid_topology tp;
+
+ if (argc < 2) {
+ fprintf(stderr, "usage: %s <device> "
+ "-- checks based on libblkid for mkfs-like programs.\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);
+
+ /*
+ * check Filesystems / Partitions overwrite
+ */
+
+ /* enable partitions probing (superblocks are enabled by default) */
+ blkid_probe_enable_partitions(pr, TRUE);
+
+ rc = blkid_do_fullprobe(pr);
+ if (rc == -1)
+ errx(EXIT_FAILURE, "%s: blkid_do_fullprobe() failed", devname);
+ else if (rc == 0) {
+ const char *type;
+
+ if (!blkid_probe_lookup_value(pr, "TYPE", &type, NULL))
+ errx(EXIT_FAILURE, "%s: appears to contain an existing "
+ "%s superblock", devname, type);
+
+ if (!blkid_probe_lookup_value(pr, "PTTYPE", &type, NULL))
+ errx(EXIT_FAILURE, "%s: appears to contain an partition "
+ "table (%s)", devname, type);
+ }
+
+ /*
+ * get topology details
+ */
+ tp = blkid_probe_get_topology(pr);
+ if (!tp)
+ errx(EXIT_FAILURE, "%s: failed to read topology", devname);
+
+
+ /* ... your mkfs.<type> code or so ...
+
+ off = blkid_topology_get_alignment_offset(tp);
+
+ */
+
+ blkid_free_probe(pr);
+
+ return EXIT_SUCCESS;
+}