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Re: [Qemu-block] [Qemu-devel] [PATCH v8 18/26] block: Add sgfnt_runtime_

From: Eric Blake
Subject: Re: [Qemu-block] [Qemu-devel] [PATCH v8 18/26] block: Add sgfnt_runtime_opts to BlockDriver
Date: Tue, 6 Feb 2018 13:43:03 -0600
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:52.0) Gecko/20100101 Thunderbird/52.5.2

On 02/05/2018 09:18 AM, Max Reitz wrote:
This new field can be set by block drivers to list the runtime options
they accept that may influence the contents of the respective BDS. As of
a follow-up patch, this list will be used by the common
bdrv_refresh_filename() implementation to decide which options to put
into BDS.full_open_options (and consequently whether a JSON filename has
to be created), thus freeing the drivers of having to implement that
logic themselves.

Additionally, this patch adds the field to all of the block drivers that
need it and sets it accordingly.

Signed-off-by: Max Reitz <address@hidden>

+    /* Pointer to a NULL-terminated array of names of significant options that
+     * can be specified for bdrv_open(). A significant option is one that
+     * changes the data of a BDS.
+     * If this pointer is NULL, the array is considered empty.
+     * "filename" and "driver" are always considered significant. */
+    const char *const *sgfnt_runtime_opts;

Warning: Bikeshedding follows:


might read easier (same number of letters, but has some vowels rthr thn bng crptc bbrvtn).

Eric Blake, Principal Software Engineer
Red Hat, Inc.           +1-919-301-3266
Virtualization:  qemu.org | libvirt.org

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