X-Git-Url: http://git.annexia.org/?a=blobdiff_plain;f=daemon%2Fdaemon.h;h=69097c34f957c4124f3916fdef9dd631bcba0f1a;hb=655f8037def7742a608fb272004eec51424ac31d;hp=6ed68fd8dd7b54d639cad398544def7b52390f39;hpb=9c299b64bb24cefafa582fe425bb65b78373d205;p=libguestfs.git

diff --git a/daemon/daemon.h b/daemon/daemon.h
index 6ed68fd..69097c3 100644
--- a/daemon/daemon.h
+++ b/daemon/daemon.h
@@ -47,6 +47,7 @@ extern int xwrite (int sock, const void *buf, size_t len)
 extern int xread (int sock, void *buf, size_t len)
   __attribute__((__warn_unused_result__));
 
+extern int add_string_nodup (char ***argv, int *size, int *alloc, char *str);
 extern int add_string (char ***argv, int *size, int *alloc, const char *str);
 extern size_t count_strings (char *const *argv);
 extern void sort_strings (char **argv, int len);
@@ -212,6 +213,18 @@ is_zero (const char *buffer, size_t size)
   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.
  */