X-Git-Url: http://git.annexia.org/?a=blobdiff_plain;f=daemon%2Fdaemon.h;h=489c38d4bd6636199bb2d641eef2b1c91ec639b1;hb=d469db9398942723d2e2ae27989de63bce9cff8d;hp=77ee6281a13418e3b9e4d6a85ed301e7d9222727;hpb=4b91462bad010a0b214e808f94a916002be65b91;p=libguestfs.git

diff --git a/daemon/daemon.h b/daemon/daemon.h
index 77ee628..489c38d 100644
--- a/daemon/daemon.h
+++ b/daemon/daemon.h
@@ -134,6 +134,9 @@ extern int e2prog (char *name); /* Massive hack for RHEL 5. */
 /*-- in lvm.c --*/
 extern int lv_canonical (const char *device, char **ret);
 
+/*-- in lvm-filter.c --*/
+extern void copy_lvm (void);
+
 /*-- in proto.c --*/
 extern void main_loop (int sock) __attribute__((noreturn));
 
@@ -191,6 +194,36 @@ extern void pulse_mode_start (void);
 extern void pulse_mode_end (void);
 extern void pulse_mode_cancel (void);
 
+/* Return true iff the buffer is all zero bytes.
+ *
+ * Note that gcc is smart enough to optimize this properly:
+ * http://stackoverflow.com/questions/1493936/faster-means-of-checking-for-an-empty-buffer-in-c/1493989#1493989
+ */
+static inline int
+is_zero (const char *buffer, size_t size)
+{
+  size_t i;
+
+  for (i = 0; i < size; ++i) {
+    if (buffer[i] != 0)
+      return 0;
+  }
+
+  return 1;
+}
+
+/* Helper for building up short lists of arguments.  Your code has to
+ * define MAX_ARGS to a suitable value.
+ */
+#define ADD_ARG(argv,i,v)                                               \
+  do {                                                                  \
+    if ((i) >= MAX_ARGS) {                                              \
+      fprintf (stderr, "%s: %d: internal error: exceeded MAX_ARGS (%zu) when constructing the command line\n", __FILE__, __LINE__, (size_t) MAX_ARGS); \
+      abort ();                                                         \
+    }                                                                   \
+    (argv)[(i)++] = (v);                                                \
+  } while (0)
+
 /* Helper for functions that need a root filesystem mounted.
  * NB. Cannot be used for FileIn functions.
  */