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iov: remove iov_copy()

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it was needed by a draft version of vhost-user, it is not needed
anymore.

Signed-off-by: Laurent Vivier <lvivier@redhat.com>
Reviewed-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Stefano Brivio <sbrivio@redhat.com>
This commit is contained in:
Laurent Vivier 2024-06-13 14:36:54 +02:00 committed by Stefano Brivio
parent 0c335d751a
commit 7290335b14
2 changed files with 0 additions and 42 deletions
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39
iov.c
View file

@ -156,42 +156,3 @@ size_t iov_size(const struct iovec *iov, size_t iov_cnt)
return len; return len;
} }
/**
* iov_copy - Copy data from one scatter/gather I/O vector (struct iovec) to
* another.
*
* @dst_iov: Pointer to the destination array of struct iovec describing
* the scatter/gather I/O vector to copy to.
* @dst_iov_cnt: Number of elements in the destination iov array.
* @iov: Pointer to the source array of struct iovec describing
* the scatter/gather I/O vector to copy from.
* @iov_cnt: Number of elements in the source iov array.
* @offset: Offset within the source iov from where copying should start.
* @bytes: Total number of bytes to copy from iov to dst_iov.
*
* Returns: The number of elements successfully copied to the destination
* iov array.
*/
/* cppcheck-suppress unusedFunction */
unsigned iov_copy(struct iovec *dst_iov, size_t dst_iov_cnt,
const struct iovec *iov, size_t iov_cnt,
size_t offset, size_t bytes)
{
unsigned int i, j;
i = iov_skip_bytes(iov, iov_cnt, offset, &offset);
/* copying data */
for (j = 0; i < iov_cnt && j < dst_iov_cnt && bytes; i++) {
size_t len = MIN(bytes, iov[i].iov_len - offset);
dst_iov[j].iov_base = (char *)iov[i].iov_base + offset;
dst_iov[j].iov_len = len;
j++;
bytes -= len;
offset = 0;
}
return j;
}

3
iov.h
View file

@ -28,7 +28,4 @@ size_t iov_from_buf(const struct iovec *iov, size_t iov_cnt,
size_t iov_to_buf(const struct iovec *iov, size_t iov_cnt, size_t iov_to_buf(const struct iovec *iov, size_t iov_cnt,
size_t offset, void *buf, size_t bytes); size_t offset, void *buf, size_t bytes);
size_t iov_size(const struct iovec *iov, size_t iov_cnt); size_t iov_size(const struct iovec *iov, size_t iov_cnt);
unsigned iov_copy(struct iovec *dst_iov, size_t dst_iov_cnt,
const struct iovec *iov, size_t iov_cnt,
size_t offset, size_t bytes);
#endif /* IOVEC_H */ #endif /* IOVEC_H */