[libvirt] [PATCH 1/2] Check if qemu-bridge-helper exists and is executable

Otherwise the error is just error: Failed to create domain from test1.xml error: failed to retrieve file descriptor for interface: Transport endpoint is not connected since we don't get a sensible error after the fork. --- src/qemu/qemu_command.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/src/qemu/qemu_command.c b/src/qemu/qemu_command.c index 5a92ad4..bddc955 100644 --- a/src/qemu/qemu_command.c +++ b/src/qemu/qemu_command.c @@ -295,6 +295,12 @@ static int qemuCreateInBridgePortWithHelper(virQEMUDriverConfigPtr cfg, return -1; } + if (!virFileIsExecutable(cfg->bridgeHelperName)) { + virReportSystemError(errno, _("'%s' not a suitable bridge helper"), + cfg->bridgeHelperName); + return -1; + } + cmd = virCommandNew(cfg->bridgeHelperName); if (flags & VIR_NETDEV_TAP_CREATE_VNET_HDR) virCommandAddArgFormat(cmd, "--use-vnet"); -- 2.1.4