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/*
* Copyright (c) 2007, 2010, XenSource Inc.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* * Neither the name of XenSource Inc. nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER
* OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include <stddef.h>
#include <string.h>
#include <errno.h>
#include "tapdisk-disktype.h"
#include "tapdisk-message.h"
static const disk_info_t aio_disk = {
"aio",
"raw image (aio)",
0,
};
static const disk_info_t sync_disk = {
"sync",
"raw image (sync)",
0,
};
static const disk_info_t vmdk_disk = {
"vmdk",
"vmware image (vmdk)",
1,
};
static const disk_info_t vhdsync_disk = {
"vhdsync",
"virtual server image (vhd) - synchronous",
1,
};
static const disk_info_t vhd_disk = {
"vhd",
"virtual server image (vhd)",
0,
};
static const disk_info_t ram_disk = {
"ram",
"ramdisk image (ram)",
1,
};
static const disk_info_t qcow_disk = {
"qcow",
"qcow disk (qcow)",
0,
};
static const disk_info_t block_cache_disk = {
"bc",
"block cache image (bc)",
1,
};
static const disk_info_t vhd_index_disk = {
"vhdi",
"vhd index image (vhdi)",
1,
};
static const disk_info_t log_disk = {
"log",
"write logger (log)",
0,
};
static disk_info_t remus_disk = {
"remus disk replicator (remus)",
"remus",
0,
};
const disk_info_t *tapdisk_disk_types[] = {
[DISK_TYPE_AIO] = &aio_disk,
[DISK_TYPE_SYNC] = &sync_disk,
[DISK_TYPE_VMDK] = &vmdk_disk,
[DISK_TYPE_VHDSYNC] = &vhdsync_disk,
[DISK_TYPE_VHD] = &vhd_disk,
[DISK_TYPE_RAM] = &ram_disk,
[DISK_TYPE_QCOW] = &qcow_disk,
[DISK_TYPE_BLOCK_CACHE] = &block_cache_disk,
[DISK_TYPE_LOG] = &log_disk,
[DISK_TYPE_VINDEX] = &vhd_index_disk,
[DISK_TYPE_REMUS] = &remus_disk,
0,
};
extern struct tap_disk tapdisk_aio;
extern struct tap_disk tapdisk_sync;
extern struct tap_disk tapdisk_vmdk;
extern struct tap_disk tapdisk_vhdsync;
extern struct tap_disk tapdisk_vhd;
extern struct tap_disk tapdisk_ram;
extern struct tap_disk tapdisk_qcow;
extern struct tap_disk tapdisk_block_cache;
extern struct tap_disk tapdisk_vhd_index;
extern struct tap_disk tapdisk_log;
extern struct tap_disk tapdisk_remus;
const struct tap_disk *tapdisk_disk_drivers[] = {
[DISK_TYPE_AIO] = &tapdisk_aio,
#if 0
[DISK_TYPE_SYNC] = &tapdisk_sync,
[DISK_TYPE_VMDK] = &tapdisk_vmdk,
#endif
[DISK_TYPE_VHD] = &tapdisk_vhd,
[DISK_TYPE_RAM] = &tapdisk_ram,
[DISK_TYPE_QCOW] = &tapdisk_qcow,
[DISK_TYPE_BLOCK_CACHE] = &tapdisk_block_cache,
[DISK_TYPE_VINDEX] = &tapdisk_vhd_index,
[DISK_TYPE_LOG] = &tapdisk_log,
[DISK_TYPE_REMUS] = &tapdisk_remus,
0,
};
int
tapdisk_disktype_find(const char *name)
{
const disk_info_t *info;
int i;
for (i = 0; info = tapdisk_disk_types[i], info != NULL; ++i) {
if (strcmp(name, info->name))
continue;
if (!tapdisk_disk_drivers[i])
return -ENOSYS;
return i;
}
return -ENOENT;
}
int
tapdisk_disktype_parse_params(const char *params, const char **_path)
{
char name[DISK_TYPE_NAME_MAX], *ptr;
size_t len;
int type;
ptr = strchr(params, ':');
if (!ptr)
return -EINVAL;
len = ptr - params;
if (len > sizeof(name) - 1)
return -ENAMETOOLONG;
memset(name, 0, sizeof(name));
strncpy(name, params, len);
type = tapdisk_disktype_find(name);
if (type >= 0)
*_path = params + len + 1;
return type;
}
int
tapdisk_parse_disk_type(const char *params, const char **_path, int *_type)
{
int type;
type = tapdisk_disktype_parse_params(params, _path);
if (type < 0)
return type;
*_type = type;
return 0;
}
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