[PATCH] discover/boot: Fix talloc parent for resource URLs

[Samuel Mendoza-Jonas]

On Thu, 2018-11-29 at 12:55 +1100, Samuel Mendoza-Jonas wrote:
> The pb_urls for the boot resources use 'opt' as the talloc parent but
> this may be NULL, for example if this is a user-created boot option.
> Move the boot_task initialisation so it can be used as the talloc parent
> instead.
> 
> Signed-off-by: Samuel Mendoza-Jonas <sam at mendozajonas.com>
> ---
> Alternate title: oh hey what's this branch from 2014?

Merged as ef0c91e9

> 
>  discover/boot.c | 16 +++++++++-------
>  1 file changed, 9 insertions(+), 7 deletions(-)
> 
> diff --git a/discover/boot.c b/discover/boot.c
> index ed67cd50..91fc46d6 100644
> --- a/discover/boot.c
> +++ b/discover/boot.c
> @@ -526,25 +526,31 @@ struct boot_task *boot(void *ctx, struct discover_boot_option *opt,
>  	update_status(status_fn, status_arg, STATUS_INFO,
>  			_("Booting %s"), boot_desc);
>  
> +	boot_task = talloc_zero(ctx, struct boot_task);
> +	boot_task->dry_run = dry_run;
> +	boot_task->status_fn = status_fn;
> +	boot_task->status_arg = status_arg;
> +
>  	if (cmd && cmd->boot_image_file) {
> -		image = pb_url_parse(opt, cmd->boot_image_file);
> +		image = pb_url_parse(boot_task, cmd->boot_image_file);
>  	} else if (opt && opt->boot_image) {
>  		image = opt->boot_image->url;
>  	} else {
>  		pb_log_fn("no image specified\n");
>  		update_status(status_fn, status_arg, STATUS_ERROR,
>  				_("Boot failed: no image specified"));
> +		talloc_free(boot_task);
>  		return NULL;
>  	}
>  
>  	if (cmd && cmd->initrd_file) {
> -		initrd = pb_url_parse(opt, cmd->initrd_file);
> +		initrd = pb_url_parse(boot_task, cmd->initrd_file);
>  	} else if (opt && opt->initrd) {
>  		initrd = opt->initrd->url;
>  	}
>  
>  	if (cmd && cmd->dtb_file) {
> -		dtb = pb_url_parse(opt, cmd->dtb_file);
> +		dtb = pb_url_parse(boot_task, cmd->dtb_file);
>  	} else if (opt && opt->dtb) {
>  		dtb = opt->dtb->url;
>  	}
> @@ -554,10 +560,6 @@ struct boot_task *boot(void *ctx, struct discover_boot_option *opt,
>  		setenv("https_proxy", opt->proxy, 1);
>  	}
>  
> -	boot_task = talloc_zero(ctx, struct boot_task);
> -	boot_task->dry_run = dry_run;
> -	boot_task->status_fn = status_fn;
> -	boot_task->status_arg = status_arg;
>  	list_init(&boot_task->resources);
>  
>  	lockdown_type = lockdown_status();