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xprtrdma: Harden backchannel call decoding

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Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
This commit is contained in:
Chuck Lever
2017-08-03 14:30:11 -04:00
committed by Anna Schumaker
parent 96f8778f70
commit 41c8f70f5a
3 changed files with 62 additions and 55 deletions
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13
include/linux/sunrpc/xdr.h
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@@ -239,6 +239,19 @@ extern unsigned int xdr_read_pages(struct xdr_stream *xdr, unsigned int len);
extern void xdr_enter_page(struct xdr_stream *xdr, unsigned int len);
extern int xdr_process_buf(struct xdr_buf *buf, unsigned int offset, unsigned int len, int (*actor)(struct scatterlist *, void *), void *data);
/**
* xdr_stream_remaining - Return the number of bytes remaining in the stream
* @xdr: pointer to struct xdr_stream
*
* Return value:
* Number of bytes remaining in @xdr before xdr->end
*/
static inline size_t
xdr_stream_remaining(const struct xdr_stream *xdr)
{
return xdr->nwords << 2;
}
ssize_t xdr_stream_decode_string_dup(struct xdr_stream *xdr, char **str,
size_t maxlen, gfp_t gfp_flags);
/**