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SUNRPC: Remove xdr_buf_read_mic()

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Clean up: this function is no longer used.

Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Reviewed-by: Benjamin Coddington <bcodding@redhat.com>
Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
This commit is contained in:
Chuck Lever 2020-03-11 11:21:12 -04:00 committed by Trond Myklebust
parent 4047aa909c
commit 8d6bda7f23
2 changed files with 0 additions and 56 deletions
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1
include/linux/sunrpc/xdr.h
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@ -184,7 +184,6 @@ 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_read_mic(struct xdr_buf *, struct xdr_netobj *, 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);

55
net/sunrpc/xdr.c
View File

@ -1235,61 +1235,6 @@ xdr_encode_word(struct xdr_buf *buf, unsigned int base, u32 obj)
}
EXPORT_SYMBOL_GPL(xdr_encode_word);
/**
* xdr_buf_read_mic() - obtain the address of the GSS mic from xdr buf
* @buf: pointer to buffer containing a mic
* @mic: on success, returns the address of the mic
* @offset: the offset in buf where mic may be found
*
* This function may modify the xdr buf if the mic is found to be straddling
* a boundary between head, pages, and tail. On success the mic can be read
* from the address returned. There is no need to free the mic.
*
* Return: Success returns 0, otherwise an integer error.
*/
int xdr_buf_read_mic(struct xdr_buf *buf, struct xdr_netobj *mic, unsigned int offset)
{
struct xdr_buf subbuf;
unsigned int boundary;
if (xdr_decode_word(buf, offset, &mic->len))
return -EFAULT;
offset += 4;
/* Is the mic partially in the head? */
boundary = buf->head[0].iov_len;
if (offset < boundary && (offset + mic->len) > boundary)
xdr_shift_buf(buf, boundary - offset);
/* Is the mic partially in the pages? */
boundary += buf->page_len;
if (offset < boundary && (offset + mic->len) > boundary)
xdr_shrink_pagelen(buf, boundary - offset);
if (xdr_buf_subsegment(buf, &subbuf, offset, mic->len))
return -EFAULT;
/* Is the mic contained entirely in the head? */
mic->data = subbuf.head[0].iov_base;
if (subbuf.head[0].iov_len == mic->len)
return 0;
/* ..or is the mic contained entirely in the tail? */
mic->data = subbuf.tail[0].iov_base;
if (subbuf.tail[0].iov_len == mic->len)
return 0;
/* Find a contiguous area in @buf to hold all of @mic */
if (mic->len > buf->buflen - buf->len)
return -ENOMEM;
if (buf->tail[0].iov_len != 0)
mic->data = buf->tail[0].iov_base + buf->tail[0].iov_len;
else
mic->data = buf->head[0].iov_base + buf->head[0].iov_len;
__read_bytes_from_xdr_buf(&subbuf, mic->data, mic->len);
return 0;
}
EXPORT_SYMBOL_GPL(xdr_buf_read_mic);
/* Returns 0 on success, or else a negative error code. */
static int
xdr_xcode_array2(struct xdr_buf *buf, unsigned int base,