df: Add --uuid option to print guest UUIDs instead of names (RHBZ#646821).

[libguestfs.git] / daemon / devsparts.c

diff --git a/daemon/devsparts.c b/daemon/devsparts.c
index 60e7aa8..1781def 100644 (file)
--- a/daemon/devsparts.c
+++ b/daemon/devsparts.c
@@ -26,6 +26,8 @@
 #include <dirent.h>
 #include <sys/stat.h>
 
+#include "c-ctype.h"
+
 #include "daemon.h"
 #include "actions.h"
 
@@ -60,6 +62,10 @@ foreach_block_device (block_dev_func_t func)
       char dev_path[256];
       snprintf (dev_path, sizeof dev_path, "/dev/%s", d->d_name);
 
+      /* Ignore the root device. */
+      if (is_root_device (dev_path))
+        continue;
+
       /* RHBZ#514505: Some versions of qemu <= 0.10 add a
        * CD-ROM device even though we didn't request it.  Try to
        * detect this by seeing if the device contains media.
@@ -186,3 +192,28 @@ do_list_partitions (void)
 {
   return foreach_block_device(add_partitions);
 }
+
+char *
+do_part_to_dev (const char *part)
+{
+  int err = 1;
+  size_t n = strlen (part);
+
+  while (n >= 1 && c_isdigit (part[n-1])) {
+    err = 0;
+    n--;
+  }
+
+  if (err) {
+    reply_with_error ("device name is not a partition");
+    return NULL;
+  }
+
+  char *r = strndup (part, n);
+  if (r == NULL) {
+    reply_with_perror ("strdup");
+    return NULL;
+  }
+
+  return r;
+}