From 5f672c62102e0136de72fa670d0c2b1b34311dc9 Mon Sep 17 00:00:00 2001 From: Ian Jackson Date: Fri, 3 Aug 2012 09:54:12 +0100 Subject: libxl: do not blunder on if bootloader fails (again) Do not lose the rc value passed to bootloader_callback. Do not lose the rc value from the bl when the local disk detach succeeds. While we're here rationalise the use of bl->rc to make things clearer. Set it to zero at the start and always update it conditionally; copy it into bootloader_callback's argument each time. Signed-off-by: Ian Jackson Acked-by: Ian Campbell Committed-by: Ian Campbell --- tools/libxl/libxl_bootloader.c | 11 +++++++++-- 1 file changed, 9 insertions(+), 2 deletions(-) (limited to 'tools') diff --git a/tools/libxl/libxl_bootloader.c b/tools/libxl/libxl_bootloader.c index bfc1b5616a..e103ee9666 100644 --- a/tools/libxl/libxl_bootloader.c +++ b/tools/libxl/libxl_bootloader.c @@ -206,6 +206,7 @@ static int parse_bootloader_result(libxl__egc *egc, void libxl__bootloader_init(libxl__bootloader_state *bl) { assert(bl->ao); + bl->rc = 0; bl->dls.diskpath = NULL; bl->openpty.ao = bl->ao; bl->dls.ao = bl->ao; @@ -255,6 +256,9 @@ static void bootloader_local_detached_cb(libxl__egc *egc, static void bootloader_callback(libxl__egc *egc, libxl__bootloader_state *bl, int rc) { + if (!bl->rc) + bl->rc = rc; + bootloader_cleanup(egc, bl); bl->dls.callback = bootloader_local_detached_cb; @@ -270,9 +274,11 @@ static void bootloader_local_detached_cb(libxl__egc *egc, if (rc) { LOG(ERROR, "unable to detach locally attached disk"); + if (!bl->rc) + bl->rc = rc; } - bl->callback(egc, bl, rc); + bl->callback(egc, bl, bl->rc); } /* might be called at any time, provided it's init'd */ @@ -289,7 +295,8 @@ static void bootloader_stop(libxl__egc *egc, if (r) LOGE(WARN, "%sfailed to kill bootloader [%lu]", rc ? "after failure, " : "", (unsigned long)bl->child.pid); } - bl->rc = rc; + if (!bl->rc) + bl->rc = rc; } /*----- main flow of control -----*/ -- cgit v1.2.3