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/*
* QEMU Xen emulation: The actual implementation of XenStore
*
* Copyright © 2023 Amazon.com, Inc. or its affiliates. All Rights Reserved.
*
* Authors: David Woodhouse <dwmw2@infradead.org>, Paul Durrant <paul@xen.org>
*
* This work is licensed under the terms of the GNU GPL, version 2 or later.
* See the COPYING file in the top-level directory.
*/
#include "qemu/osdep.h"
#include "xen_xenstore.h"
#include "xenstore_impl.h"
struct XenstoreImplState {
};
int xs_impl_read(XenstoreImplState *s, unsigned int dom_id,
xs_transaction_t tx_id, const char *path, GByteArray *data)
{
/*
* The data GByteArray shall exist, and will be freed by caller.
* Just g_byte_array_append() to it.
*/
return ENOENT;
}
int xs_impl_write(XenstoreImplState *s, unsigned int dom_id,
xs_transaction_t tx_id, const char *path, GByteArray *data)
{
/*
* The data GByteArray shall exist, will be freed by caller. You are
* free to use g_byte_array_steal() and keep the data.
*/
return ENOSYS;
}
int xs_impl_directory(XenstoreImplState *s, unsigned int dom_id,
xs_transaction_t tx_id, const char *path,
uint64_t *gencnt, GList **items)
{
/*
* The items are (char *) to be freed by caller. Although it's consumed
* immediately so if you want to change it to (const char *) and keep
* them, go ahead and change the caller.
*/
return ENOENT;
}
int xs_impl_transaction_start(XenstoreImplState *s, unsigned int dom_id,
xs_transaction_t *tx_id)
{
return ENOSYS;
}
int xs_impl_transaction_end(XenstoreImplState *s, unsigned int dom_id,
xs_transaction_t tx_id, bool commit)
{
return ENOSYS;
}
int xs_impl_rm(XenstoreImplState *s, unsigned int dom_id,
xs_transaction_t tx_id, const char *path)
{
return ENOSYS;
}
int xs_impl_get_perms(XenstoreImplState *s, unsigned int dom_id,
xs_transaction_t tx_id, const char *path, GList **perms)
{
/*
* The perms are (char *) in the <perm-as-string> wire format to be
* freed by the caller.
*/
return ENOSYS;
}
int xs_impl_set_perms(XenstoreImplState *s, unsigned int dom_id,
xs_transaction_t tx_id, const char *path, GList *perms)
{
/*
* The perms are (const char *) in the <perm-as-string> wire format.
*/
return ENOSYS;
}
int xs_impl_watch(XenstoreImplState *s, unsigned int dom_id, const char *path,
const char *token, xs_impl_watch_fn fn, void *opaque)
{
/*
* When calling the callback @fn, note that the path should
* precisely match the relative path that the guest provided, even
* if it was a relative path which needed to be prefixed with
* /local/domain/${domid}/
*/
return ENOSYS;
}
int xs_impl_unwatch(XenstoreImplState *s, unsigned int dom_id,
const char *path, const char *token,
xs_impl_watch_fn fn, void *opaque)
{
/* Remove the watch that matches all four criteria */
return ENOSYS;
}
int xs_impl_reset_watches(XenstoreImplState *s, unsigned int dom_id)
{
return ENOSYS;
}
XenstoreImplState *xs_impl_create(void)
{
return g_new0(XenstoreImplState, 1);
}
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