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[porthole] added memory copy utility functions

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Geoffrey McRae
2019-11-05 00:50:39 +11:00
parent d5f409b02e
commit f93c918aa5
4 changed files with 206 additions and 18 deletions
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19
porthole/include/porthole/client.h
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@@ -17,27 +17,10 @@ this program; if not, write to the Free Software Foundation, Inc., 59 Temple
Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include <stdbool.h>
#include <stdint.h>
#include "types.h"
typedef struct PortholeClient *PortholeClient;
typedef struct
{
unsigned int size;
void * data;
}
PortholeSegment;
typedef struct
{
uint32_t id;
unsigned int size;
unsigned int num_segments;
PortholeSegment segments[0];
}
PortholeMap;
/**
* Memory map event callback.
*

52
porthole/include/porthole/util.h Normal file
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@@ -0,0 +1,52 @@
/*
Looking Glass - KVM FrameRelay (KVMFR) Client
Copyright (C) 2017-2019 Geoffrey McRae <geoff@hostfission.com>
https://looking-glass.hostfission.com
This program is free software; you can redistribute it and/or modify it under
the terms of the GNU General Public License as published by the Free Software
Foundation; either version 2 of the License, or (at your option) any later
version.
This program is distributed in the hope that it will be useful, but WITHOUT ANY
WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A
PARTICULAR PURPOSE. See the GNU General Public License for more details.
You should have received a copy of the GNU General Public License along with
this program; if not, write to the Free Software Foundation, Inc., 59 Temple
Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include "types.h"
#include <sys/types.h>
/**
* Copy from memory to a PortholeMap
*
* @param src The source buffer
* @param dst The destination map
* @param len The data length to copy
* @param off The offset into the dst PortholeMap
*/
void porthole_copy_mem_to_map(void * src, PortholeMap * dst, size_t len, off_t off);
/**
* Copy from a PortholeMap to memory
*
* @param src The source buffer
* @param dst The destination buffer
* @param len The data length to copy
* @param off The offset into the src PortholeMap
*/
void porthole_copy_map_to_mem(PortholeMap * src, void * dst, size_t len, off_t off);
/**
* Copy from a PortholeMap to a PortholeMap
*
* @param src The source buffer
* @param dst The destination buffer
* @param len The data length to copy
* @param src_off The offset into the src PortholeMap
* @param dst_off The offset into the dst PortholeMap
*/
void porthole_copy_map_to_map(PortholeMap * src, PortholeMap * dst, size_t len, off_t src_off, off_t dst_off);