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author | Amit Shah <amit.shah@redhat.com> | 2010-05-04 16:39:07 +0530 |
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committer | Anthony Liguori <aliguori@us.ibm.com> | 2010-05-10 11:36:03 -0500 |
commit | 4c64d5b52ed5287bb31489bba39cf41628230bce (patch) | |
tree | bb64c58482faa9f725daf2a28eda434d169efbac /hw | |
parent | 14eb8b6829ad9dee7035de729e083844a425f274 (diff) | |
download | qemu-4c64d5b52ed5287bb31489bba39cf41628230bce.zip qemu-4c64d5b52ed5287bb31489bba39cf41628230bce.tar.gz qemu-4c64d5b52ed5287bb31489bba39cf41628230bce.tar.bz2 |
iov: Move from hw/ to topdir
The iov functions can be useful to other code as well.
Signed-off-by: Amit Shah <amit.shah@redhat.com>
CC: Christoph Hellwig <hch@lst.de>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
Diffstat (limited to 'hw')
-rw-r--r-- | hw/iov.c | 70 | ||||
-rw-r--r-- | hw/iov.h | 19 |
2 files changed, 0 insertions, 89 deletions
diff --git a/hw/iov.c b/hw/iov.c deleted file mode 100644 index 588cd04..0000000 --- a/hw/iov.c +++ /dev/null @@ -1,70 +0,0 @@ -/* - * Helpers for getting linearized buffers from iov / filling buffers into iovs - * - * Copyright IBM, Corp. 2007, 2008 - * Copyright (C) 2010 Red Hat, Inc. - * - * Author(s): - * Anthony Liguori <aliguori@us.ibm.com> - * Amit Shah <amit.shah@redhat.com> - * - * This work is licensed under the terms of the GNU GPL, version 2. See - * the COPYING file in the top-level directory. - */ - -#include "iov.h" - -size_t iov_from_buf(struct iovec *iov, unsigned int iovcnt, - const void *buf, size_t size) -{ - size_t offset; - unsigned int i; - - offset = 0; - for (i = 0; offset < size && i < iovcnt; i++) { - size_t len; - - len = MIN(iov[i].iov_len, size - offset); - - memcpy(iov[i].iov_base, buf + offset, len); - offset += len; - } - return offset; -} - -size_t iov_to_buf(const struct iovec *iov, const unsigned int iovcnt, - void *buf, size_t offset, size_t size) -{ - uint8_t *ptr; - size_t iov_off, buf_off; - unsigned int i; - - ptr = buf; - iov_off = 0; - buf_off = 0; - for (i = 0; i < iovcnt && size; i++) { - if (offset < (iov_off + iov[i].iov_len)) { - size_t len = MIN((iov_off + iov[i].iov_len) - offset , size); - - memcpy(ptr + buf_off, iov[i].iov_base + (offset - iov_off), len); - - buf_off += len; - offset += len; - size -= len; - } - iov_off += iov[i].iov_len; - } - return buf_off; -} - -size_t iov_size(const struct iovec *iov, const unsigned int iovcnt) -{ - size_t len; - unsigned int i; - - len = 0; - for (i = 0; i < iovcnt; i++) { - len += iov[i].iov_len; - } - return len; -} diff --git a/hw/iov.h b/hw/iov.h deleted file mode 100644 index 60a8547..0000000 --- a/hw/iov.h +++ /dev/null @@ -1,19 +0,0 @@ -/* - * Helpers for getting linearized buffers from iov / filling buffers into iovs - * - * Copyright (C) 2010 Red Hat, Inc. - * - * Author(s): - * Amit Shah <amit.shah@redhat.com> - * - * This work is licensed under the terms of the GNU GPL, version 2. See - * the COPYING file in the top-level directory. - */ - -#include "qemu-common.h" - -size_t iov_from_buf(struct iovec *iov, unsigned int iovcnt, - const void *buf, size_t size); -size_t iov_to_buf(const struct iovec *iov, const unsigned int iovcnt, - void *buf, size_t offset, size_t size); -size_t iov_size(const struct iovec *iov, const unsigned int iovcnt); |