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xen/52205a90-public-hvm_xs_strings.h-Fix-ABI-regression-for-OEM-SMBios-strings.patch

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# Commit 0f4cb23c3ea5b987c49c9a9368e7a0d505ec064f
# Date 2013-08-30 10:40:48 +0200
# Author Andrew Cooper <andrew.cooper3@citrix.com>
# Committer Jan Beulich <jbeulich@suse.com>
public/hvm_xs_strings.h: Fix ABI regression for OEM SMBios strings
The old code for OEM SMBios strings was:
char path[20] = "bios-strings/oem-XX";
path[(sizeof path) - 3] = '0' + ((i < 10) ? i : i / 10);
path[(sizeof path) - 2] = (i < 10) ? '\0' : '0' + (i % 10);
Where oem-1 thru 9 specifically had no leading 0.
However, the definition of HVM_XS_OEM_STRINGS specifically requires leading
0s.
This regression was introduced by the combination of c/s 4d23036e709627 and
e64c3f71ceb662
I realise that this patch causes a change to the public headers. However I
feel it is justified as:
* All toolstacks used to have to embed the magic string (and almost certainly
still do)
* If by some miriacle a new toolstack has started using the new define will
continue to work.
* The only intree consumer of the define is hvmloader itself.
Signed-off-by: Andrew Cooper <andrew.cooper3@citrix.com>
Acked-by: Keir Fraser <keir@xen.org>
--- 2013-08-30.orig/xen/include/public/hvm/hvm_xs_strings.h 2013-07-09 20:57:12.000000000 +0200
+++ 2013-08-30/xen/include/public/hvm/hvm_xs_strings.h 2013-09-09 11:23:57.000000000 +0200
@@ -75,6 +75,6 @@
/* 1 to 99 OEM strings can be set in xenstore using values of the form
* below. These strings will be loaded into the SMBIOS type 11 structure.
*/
-#define HVM_XS_OEM_STRINGS "bios-strings/oem-%02d"
+#define HVM_XS_OEM_STRINGS "bios-strings/oem-%d"
#endif /* __XEN_PUBLIC_HVM_HVM_XS_STRINGS_H__ */