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Commit 218321e7 authored by Al Viro's avatar Al Viro
Browse files

bury memcpy_toiovec() 



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Signed-off-by: default avatarAl Viro <viro@zeniv.linux.org.uk>
parent d3a9632f

include/linux/uio.h

+0 −1
Original line number Diff line number Diff line
@@ -131,7 +131,6 @@ size_t csum_and_copy_to_iter(void *addr, size_t bytes, __wsum *csum, struct iov_ 
size_t csum_and_copy_from_iter(void *addr, size_t bytes, __wsum *csum, struct iov_iter *i);



int memcpy_fromiovec(unsigned char *kdata, struct iovec *iov, int len);

int memcpy_toiovec(struct iovec *iov, unsigned char *kdata, int len);

int memcpy_fromiovecend(unsigned char *kdata, const struct iovec *iov,

			int offset, int len);

int memcpy_toiovecend(const struct iovec *v, unsigned char *kdata,

lib/iovec.c

+0 −25
Original line number Diff line number Diff line
@@ -27,31 +27,6 @@ int memcpy_fromiovec(unsigned char *kdata, struct iovec *iov, int len) 
}

EXPORT_SYMBOL(memcpy_fromiovec);



/*

 *	Copy kernel to iovec. Returns -EFAULT on error.

 *

 *	Note: this modifies the original iovec.

 */



int memcpy_toiovec(struct iovec *iov, unsigned char *kdata, int len)

{

	while (len > 0) {

		if (iov->iov_len) {

			int copy = min_t(unsigned int, iov->iov_len, len);

			if (copy_to_user(iov->iov_base, kdata, copy))

				return -EFAULT;

			kdata += copy;

			len -= copy;

			iov->iov_len -= copy;

			iov->iov_base += copy;

		}

		iov++;

	}



	return 0;

}

EXPORT_SYMBOL(memcpy_toiovec);



/*

 *	Copy kernel to iovec. Returns -EFAULT on error.

 */