ba2a92db1f
Signed-off-by: Paul Durrant <pdurrant@amazon.com> Signed-off-by: David Woodhouse <dwmw@amazon.co.uk> Reviewed-by: Paul Durrant <paul@xen.org>
64 lines
2.8 KiB
C
64 lines
2.8 KiB
C
/*
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* QEMU Xen emulation: The actual implementation of XenStore
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*
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* Copyright © 2023 Amazon.com, Inc. or its affiliates. All Rights Reserved.
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*
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* Authors: David Woodhouse <dwmw2@infradead.org>
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*
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* This work is licensed under the terms of the GNU GPL, version 2 or later.
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* See the COPYING file in the top-level directory.
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*/
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#ifndef QEMU_XENSTORE_IMPL_H
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#define QEMU_XENSTORE_IMPL_H
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#include "hw/xen/xen_backend_ops.h"
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typedef struct XenstoreImplState XenstoreImplState;
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XenstoreImplState *xs_impl_create(unsigned int dom_id);
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char *xs_perm_as_string(unsigned int perm, unsigned int domid);
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/*
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* These functions return *positive* error numbers. This is a little
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* unconventional but it helps to keep us honest because there is
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* also a very limited set of error numbers that they are permitted
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* to return (those in xsd_errors).
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*/
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int xs_impl_read(XenstoreImplState *s, unsigned int dom_id,
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xs_transaction_t tx_id, const char *path, GByteArray *data);
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int xs_impl_write(XenstoreImplState *s, unsigned int dom_id,
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xs_transaction_t tx_id, const char *path, GByteArray *data);
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int xs_impl_directory(XenstoreImplState *s, unsigned int dom_id,
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xs_transaction_t tx_id, const char *path,
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uint64_t *gencnt, GList **items);
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int xs_impl_transaction_start(XenstoreImplState *s, unsigned int dom_id,
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xs_transaction_t *tx_id);
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int xs_impl_transaction_end(XenstoreImplState *s, unsigned int dom_id,
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xs_transaction_t tx_id, bool commit);
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int xs_impl_rm(XenstoreImplState *s, unsigned int dom_id,
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xs_transaction_t tx_id, const char *path);
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int xs_impl_get_perms(XenstoreImplState *s, unsigned int dom_id,
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xs_transaction_t tx_id, const char *path, GList **perms);
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int xs_impl_set_perms(XenstoreImplState *s, unsigned int dom_id,
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xs_transaction_t tx_id, const char *path, GList *perms);
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/* This differs from xs_watch_fn because it has the token */
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typedef void(xs_impl_watch_fn)(void *opaque, const char *path,
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const char *token);
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int xs_impl_watch(XenstoreImplState *s, unsigned int dom_id, const char *path,
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const char *token, xs_impl_watch_fn fn, void *opaque);
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int xs_impl_unwatch(XenstoreImplState *s, unsigned int dom_id,
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const char *path, const char *token, xs_impl_watch_fn fn,
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void *opaque);
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int xs_impl_reset_watches(XenstoreImplState *s, unsigned int dom_id);
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GByteArray *xs_impl_serialize(XenstoreImplState *s);
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int xs_impl_deserialize(XenstoreImplState *s, GByteArray *bytes,
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unsigned int dom_id, xs_impl_watch_fn watch_fn,
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void *watch_opaque);
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#endif /* QEMU_XENSTORE_IMPL_H */
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