Implement NEED_ROOT_OR_IS_DEVICE macro.

[libguestfs.git] / daemon / daemon.h

diff --git a/daemon/daemon.h b/daemon/daemon.h
index ca71265..b2b8152 100644 (file)
--- a/daemon/daemon.h
+++ b/daemon/daemon.h
@@ -64,6 +64,13 @@ extern void main_loop (int sock);
 extern void reply_with_error (const char *fs, ...);
 extern void reply_with_perror (const char *fs, ...);
 
+/* daemon functions that receive files (FileIn) should call
+ * receive_file for each FileIn parameter.
+ */
+#if 0
+extern void receive_file ();
+#endif
+
 /* daemon functions that return files (FileOut) should call
  * reply, then send_file for each FileOut parameter.
  */
@@ -107,6 +114,19 @@ extern void reply (xdrproc_t xdrp, char *ret);
     }                                                                  \
   } while (0)
 
+/* Helper for functions which need either an absolute path in the
+ * mounted filesystem, OR a /dev/ device which exists.
+ */
+#define NEED_ROOT_OR_IS_DEVICE(path,errcode) \
+  do {                                                                 \
+    if (strncmp ((path), "/dev/", 5) == 0)                             \
+      IS_DEVICE ((path),(errcode));                                    \
+    else {                                                             \
+      NEED_ROOT ((path),(errcode));                                    \
+      ABS_PATH ((path),(errcode));                                     \
+    }                                                                  \
+  } while (0)
+
 /* NB:
  * (1) You must match CHROOT_IN and CHROOT_OUT even along error paths.
  * (2) You must not change directory!  cwd must always be "/", otherwise