X-Git-Url: http://git.annexia.org/?a=blobdiff_plain;f=daemon%2Fdaemon.h;h=bb1ebb3ad9c4425f0f4431774b0e6409a0a4e888;hb=1ea1e536346f59fa63fdd33639ffc297282bfc37;hp=6ce46b9cbd37644c55e9f9e5e822de439e8b1b80;hpb=f02acc3d307f210d418a0177f374d02a4f8ccb5a;p=libguestfs.git

diff --git a/daemon/daemon.h b/daemon/daemon.h
index 6ce46b9..bb1ebb3 100644
--- a/daemon/daemon.h
+++ b/daemon/daemon.h
@@ -116,11 +116,15 @@ extern int sync_disks (void);
 /*-- in proto.c --*/
 extern void main_loop (int sock) __attribute__((noreturn));
 
-/* ordinary daemon functions use these to indicate errors */
+/* ordinary daemon functions use these to indicate errors
+ * NB: you don't need to prefix the string with the current command,
+ * it is added automatically by the client-side RPC stubs.
+ */
 extern void reply_with_error (const char *fs, ...)
   __attribute__((format (printf,1,2)));
-extern void reply_with_perror (const char *fs, ...)
-  __attribute__((format (printf,1,2)));
+extern void reply_with_perror_errno (int err, const char *fs, ...)
+  __attribute__((format (printf,2,3)));
+#define reply_with_perror(...) reply_with_perror_errno(errno, __VA_ARGS__)
 
 /* daemon functions that receive files (FileIn) should call
  * receive_file for each FileIn parameter.
@@ -130,7 +134,7 @@ extern int receive_file (receive_cb cb, void *opaque);
 
 /* daemon functions that receive files (FileIn) can call this
  * to cancel incoming transfers (eg. if there is a local error),
- * but they MUST then call reply_with_error or reply_with_perror.
+ * but they MUST then call reply_with_*.
  */
 extern void cancel_receive (void);