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vvfat: add a label option

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Until now the vvfat volume label was hardcoded to be
"QEMU VVFAT", now you can pass a file.label=labelname option
to the -drive to change it.

The FAT structure defines the volume label to be limited to
11 bytes and is filled up spaces when shorter than that. The
trailing spaces however aren't exposed to the user by
operating systems.

[Added missing comment '#' characters in block-core.json to fix build
errors.
--Stefan]

Signed-off-by: Wolfgang Bumiller <w.bumiller@proxmox.com>
Message-id: 1434706529-13895-2-git-send-email-w.bumiller@proxmox.com
Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
This commit is contained in:
Wolfgang Bumiller 2015-06-19 11:35:29 +02:00 • committed by Stefan Hajnoczi
parent c6a8c3283f
commit d5941ddae8
2 changed files with 27 additions and 4 deletions
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6
qapi/block-core.json
View file

@ -1453,13 +1453,17 @@
# @fat-type: #optional FAT type: 12, 16 or 32
# @floppy: #optional whether to export a floppy image (true) or
# partitioned hard disk (false; default)
# @label: #optional set the volume label, limited to 11 bytes. FAT16 and
# FAT32 traditionally have some restrictions on labels, which are
# ignored by most operating systems. Defaults to "QEMU VVFAT".
# (since 2.4)
# @rw: #optional whether to allow write operations (default: false)
#
# Since: 1.7
##
{ 'struct': 'BlockdevOptionsVVFAT',
'data': { 'dir': 'str', '*fat-type': 'int', '*floppy': 'bool',
'*rw': 'bool' } }
'*label': 'str', '*rw': 'bool' } }
##
# @BlockdevOptionsGenericFormat