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xenbus: maximum buffer size is XENSTORE_PAYLOAD_MAX 

Use this now that it is defined even though it happens to be == PAGE_SIZE.

The code which takes requests from userspace already validates against the size
of this buffer so no further checks are required to ensure that userspace
requests comply with the protocol in this respect.

Signed-off-by: Ian Campbell <ian.campbell@citrix.com>
Cc: Haogang Chen <haogangchen@gmail.com>
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
This commit is contained in:
Ian Campbell 2012-01-04 11:39:51 +00:00 committed by Konrad Rzeszutek Wilk
parent 9e7860cee1
commit 50bf73796e
1 changed files with 1 additions and 1 deletions
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2
drivers/xen/xenbus/xenbus_dev_frontend.c
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@ -105,7 +105,7 @@ struct xenbus_file_priv {
unsigned int len;
union {
struct xsd_sockmsg msg;
char buffer[PAGE_SIZE];
char buffer[XENSTORE_PAYLOAD_MAX];
} u;
/* Response queue. */