block: add probe abstraction layer

[project/fstools.git] / probe.c

diff --git a/probe.c b/probe.c
new file mode 100644 (file)
index 0000000..9983a72
--- /dev/null
+++ b/probe.c
@@ -0,0 +1,69 @@
+/*
+ * Copyright (C) 2016 Jo-Philipp Wich <jo@mein.io>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU Lesser General Public License version 2.1
+ * as published by the Free Software Foundation
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ */
+
+#include <string.h>
+#include <libubox/utils.h>
+
+#include "probe.h"
+#include "libblkid-tiny/libblkid-tiny.h"
+
+static struct probe_info *
+probe_path_tiny(const char *path)
+{
+       struct probe_info *info = NULL;
+       struct blkid_struct_probe pr = { };
+       char *type, *dev, *uuid, *label, *name, *version;
+
+       if (probe_block((char *)path, &pr) == 0 && pr.id && !pr.err) {
+               info = calloc_a(sizeof(*info),
+                               &type,    strlen(pr.id->name) + 1,
+                               &dev,     strlen(pr.dev)      + 1,
+                               &uuid,    strlen(pr.uuid)     + 1,
+                               &label,   strlen(pr.label)    + 1,
+                               &name,    strlen(pr.name)     + 1,
+                               &version, strlen(pr.version)  + 1);
+
+               if (info) {
+                       info->type = strcpy(type, pr.id->name);
+                       
+                       if (pr.dev[0])
+                               info->dev = strcpy(dev, pr.dev);
+
+                       if (pr.uuid[0])
+                               info->uuid = strcpy(uuid, pr.uuid);
+
+                       if (pr.label[0])
+                               info->label = strcpy(label, pr.label);
+
+                       if (pr.name[0])
+                               info->name = strcpy(name, pr.name);
+
+                       if (pr.version[0])
+                               info->version = strcpy(version, pr.version);
+               }
+       }
+
+       return info;
+}
+
+struct probe_info * 
+probe_path(const char *path)
+{
+       return probe_path_tiny(path);
+}
+
+int
+make_devs(void)
+{
+       return mkblkdev();
+}