From 2f73ea343cc4a3433f20e99a7835152767a70f80 Mon Sep 17 00:00:00 2001 From: "Richard W.M. Jones" Date: Tue, 7 Jun 2011 12:36:02 +0100 Subject: [PATCH] protocol: Enhance "unexpected end of file when reading from daemon" error. Make this error more informative, since it is a common error when the appliance fails to start up. --- src/proto.c | 23 +++++++++++++++++++++-- 1 file changed, 21 insertions(+), 2 deletions(-) diff --git a/src/proto.c b/src/proto.c index 63aea68..d8b1048 100644 --- a/src/proto.c +++ b/src/proto.c @@ -531,6 +531,25 @@ guestfs___send_to_daemon (guestfs_h *g, const void *v_buf, size_t n) * will not see GUESTFS_PROGRESS_FLAG. */ +static inline void +unexpected_end_of_file_from_daemon_error (guestfs_h *g) +{ +#define UNEXPEOF_ERROR "unexpected end of file when reading from daemon.\n" +#define UNEXPEOF_TEST_TOOL \ + "Or you can run 'libguestfs-test-tool' and post the complete output into\n" \ + "a bug report or message to the libguestfs mailing list." + if (!g->verbose) + error (g, _(UNEXPEOF_ERROR +"This usually means the libguestfs appliance failed to start up. Please\n" +"enable debugging (LIBGUESTFS_DEBUG=1) and rerun the command, then look at\n" +"the debug messages output prior to this error.\n" +UNEXPEOF_TEST_TOOL)); + else + error (g, _(UNEXPEOF_ERROR +"See earlier debug messages.\n" +UNEXPEOF_TEST_TOOL)); +} + int guestfs___recv_from_daemon (guestfs_h *g, uint32_t *size_rtn, void **buf_rtn) { @@ -596,7 +615,7 @@ guestfs___recv_from_daemon (guestfs_h *g, uint32_t *size_rtn, void **buf_rtn) return -1; } if (r == 0) { - error (g, _("unexpected end of file when reading from daemon")); + unexpected_end_of_file_from_daemon_error (g); child_cleanup (g); return -1; } @@ -659,7 +678,7 @@ guestfs___recv_from_daemon (guestfs_h *g, uint32_t *size_rtn, void **buf_rtn) return -1; } if (r == 0) { - error (g, _("unexpected end of file when reading from daemon")); + unexpected_end_of_file_from_daemon_error (g); child_cleanup (g); free (*buf_rtn); *buf_rtn = NULL; -- 1.8.3.1