diff options
Diffstat (limited to 'hw/i386/kvm/xenstore_impl.h')
| -rw-r--r-- | hw/i386/kvm/xenstore_impl.h | 58 |
1 files changed, 58 insertions, 0 deletions
diff --git a/hw/i386/kvm/xenstore_impl.h b/hw/i386/kvm/xenstore_impl.h new file mode 100644 index 0000000000..beb7b29ab8 --- /dev/null +++ b/hw/i386/kvm/xenstore_impl.h @@ -0,0 +1,58 @@ +/* + * 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> + * + * This work is licensed under the terms of the GNU GPL, version 2 or later. + * See the COPYING file in the top-level directory. + */ + +#ifndef QEMU_XENSTORE_IMPL_H +#define QEMU_XENSTORE_IMPL_H + +typedef uint32_t xs_transaction_t; + +#define XBT_NULL 0 + +typedef struct XenstoreImplState XenstoreImplState; + +XenstoreImplState *xs_impl_create(void); + +/* + * These functions return *positive* error numbers. This is a little + * unconventional but it helps to keep us honest because there is + * also a very limited set of error numbers that they are permitted + * to return (those in xsd_errors). + */ + +int xs_impl_read(XenstoreImplState *s, unsigned int dom_id, + xs_transaction_t tx_id, const char *path, GByteArray *data); +int xs_impl_write(XenstoreImplState *s, unsigned int dom_id, + xs_transaction_t tx_id, const char *path, GByteArray *data); +int xs_impl_directory(XenstoreImplState *s, unsigned int dom_id, + xs_transaction_t tx_id, const char *path, + uint64_t *gencnt, GList **items); +int xs_impl_transaction_start(XenstoreImplState *s, unsigned int dom_id, + xs_transaction_t *tx_id); +int xs_impl_transaction_end(XenstoreImplState *s, unsigned int dom_id, + xs_transaction_t tx_id, bool commit); +int xs_impl_rm(XenstoreImplState *s, unsigned int dom_id, + xs_transaction_t tx_id, const char *path); +int xs_impl_get_perms(XenstoreImplState *s, unsigned int dom_id, + xs_transaction_t tx_id, const char *path, GList **perms); +int xs_impl_set_perms(XenstoreImplState *s, unsigned int dom_id, + xs_transaction_t tx_id, const char *path, GList *perms); + +/* This differs from xs_watch_fn because it has the token */ +typedef void(xs_impl_watch_fn)(void *opaque, const char *path, + const char *token); +int xs_impl_watch(XenstoreImplState *s, unsigned int dom_id, const char *path, + const char *token, xs_impl_watch_fn fn, void *opaque); +int xs_impl_unwatch(XenstoreImplState *s, unsigned int dom_id, + const char *path, const char *token, xs_impl_watch_fn fn, + void *opaque); +int xs_impl_reset_watches(XenstoreImplState *s, unsigned int dom_id); + +#endif /* QEMU_XENSTORE_IMPL_H */ |