New API: ntfsresize-size to allow shrinking NTFS (RHBZ#585223).

[libguestfs.git] / daemon / ntfs.c

diff --git a/daemon/ntfs.c b/daemon/ntfs.c
index 73ccbbc..46b8333 100644 (file)
--- a/daemon/ntfs.c
+++ b/daemon/ntfs.c
@@ -20,6 +20,7 @@
 
 #include <stdio.h>
 #include <stdlib.h>
+#include <inttypes.h>
 #include <string.h>
 #include <unistd.h>
 
@@ -35,6 +36,13 @@ optgroup_ntfs3g_available (void)
 }
 
 int
+optgroup_ntfsprogs_available (void)
+{
+  int r = access ("/usr/sbin/ntfsresize", X_OK);
+  return r == 0;
+}
+
+int
 do_ntfs_3g_probe (int rw, const char *device)
 {
   char *err;
@@ -52,3 +60,39 @@ do_ntfs_3g_probe (int rw, const char *device)
 
   return r;
 }
+
+int
+do_ntfsresize (const char *device)
+{
+  char *err;
+  int r;
+
+  r = command (NULL, &err, "ntfsresize", "-P", device, NULL);
+  if (r == -1) {
+    reply_with_error ("%s: %s", device, err);
+    free (err);
+    return -1;
+  }
+
+  return 0;
+}
+
+int
+do_ntfsresize_size (const char *device, int64_t size)
+{
+  char *err;
+  int r;
+
+  char buf[32];
+  snprintf (buf, sizeof buf, "%" PRIi64, size);
+
+  r = command (NULL, &err, "ntfsresize", "-P", "--size", buf,
+               device, NULL);
+  if (r == -1) {
+    reply_with_error ("%s: %s", device, err);
+    free (err);
+    return -1;
+  }
+
+  return 0;
+}