ui/ncurses: Fix clearing a boot device UUID

Currently, we have a bug where we can't clear a boot device UUID, as we
only update config->boot_device if we're in AUTOBOOT_ONE state. This
means that the config UI can't be used to change out of "autoboot from a
single device" mode.

This sets the autoboot device unconditionally, allowing it to be
cleared.

Signed-off-by: Jeremy Kerr <jk@ozlabs.org>

diff --git a/ui/ncurses/nc-config.c b/ui/ncurses/nc-config.c
index 4b1a58f98ade8635b16b941ee2ab341407b2987d..f6d544de3505f2cabf63636e428a1aafb8e951e8 100644 (file)
--- a/ui/ncurses/nc-config.c
+++ b/ui/ncurses/nc-config.c
@@ -188,8 +188,8 @@ static int screen_process_form(struct config_screen *screen)
        const struct system_info *sysinfo = screen->cui->sysinfo;
        enum net_conf_type net_conf_type;
        struct interface_config *iface;
+       char *str, *end, *uuid;
        struct config *config;
-       char *str, *end;
        int rc, idx;
 
        config = config_copy(screen, screen->cui->config);
@@ -199,8 +199,9 @@ static int screen_process_form(struct config_screen *screen)
 
        config->autoboot_enabled = screen->autoboot_type != AUTOBOOT_DISABLED;
 
+       uuid = NULL;
        if (screen->autoboot_type == AUTOBOOT_ONE) {
-               char mac[20], *uuid = NULL;
+               char mac[20];
 
                /* if idx is -1 here, we have an unknown UUID selected.
                 * Otherwise, it's a blockdev index (idx <= n_blockdevs) or an
@@ -216,13 +217,11 @@ static int screen_process_form(struct config_screen *screen)
                } else if (idx != -1) {
                        uuid = sysinfo->blockdevs[idx]->uuid;
                }
-
-               if (uuid) {
-                       talloc_free(config->boot_device);
-                       config->boot_device = talloc_strdup(config, uuid);
-               }
        }
 
+       talloc_free(config->boot_device);
+       config->boot_device = uuid ? talloc_strdup(config, uuid) : NULL;
+
        str = widget_textbox_get_value(screen->widgets.timeout_f);
        if (str) {
                unsigned long x;