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SUNRPC: Adjust synopsis of xdr_buf_subsegment()

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Clean up: This enables xdr_buf_subsegment()'s callers to pass in a
const pointer to that buffer.

Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
This commit is contained in:
Chuck Lever 2020-03-13 10:42:09 -04:00
parent e5decb2eb5
commit 5a7e702670
2 changed files with 4 additions and 4 deletions
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3
include/linux/sunrpc/xdr.h
View File

@ -183,7 +183,8 @@ xdr_adjust_iovec(struct kvec *iov, __be32 *p)
*/
extern void xdr_shift_buf(struct xdr_buf *, size_t);
extern void xdr_buf_from_iov(struct kvec *, struct xdr_buf *);
extern int xdr_buf_subsegment(struct xdr_buf *, struct xdr_buf *, unsigned int, unsigned int);
extern int xdr_buf_subsegment(const struct xdr_buf *buf, struct xdr_buf *subbuf,
unsigned int base, unsigned int len);
extern void xdr_buf_trim(struct xdr_buf *, unsigned int);
extern int read_bytes_from_xdr_buf(struct xdr_buf *, unsigned int, void *, unsigned int);
extern int write_bytes_to_xdr_buf(struct xdr_buf *, unsigned int, void *, unsigned int);

5
net/sunrpc/xdr.c
View File

@ -1379,9 +1379,8 @@ EXPORT_SYMBOL_GPL(xdr_buf_from_iov);
*
* Returns -1 if base of length are out of bounds.
*/
int
xdr_buf_subsegment(struct xdr_buf *buf, struct xdr_buf *subbuf,
unsigned int base, unsigned int len)
int xdr_buf_subsegment(const struct xdr_buf *buf, struct xdr_buf *subbuf,
unsigned int base, unsigned int len)
{
subbuf->buflen = subbuf->len = len;
if (base < buf->head[0].iov_len) {