mirror of
https://github.com/xen-project/xen.git
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Ian Campbell
a71ad0fead
libxengnttab will provide a stable API and ABI for accessing the
grant table devices.
The functions are moved into the xengnt{tab,shr} namespace to make a
clean break from libxc and avoid ambiguity regarding which interfaces
are stable.
All in-tree users are updated to use the new names.
Upon request (via #define XC_WANT_COMPAT_GNTTAB_API) libxenctrl will
provide a compat API for the old names. This is used by qemu-xen for
the time being. qemu-xen-traditional is updated in lockstep.
This leaves a few grant table related functions which go via privcmd
(GNTTABOP) rather than ioctls on the /dev/xen/gnt* devices in
libxenctrl. Specifically:
- xc_gnttab_get_version
- xc_gnttab_map_table_v1
- xc_gnttab_map_table_v2
- xc_gnttab_op
These functions do not appear to be needed by qemu-dm, qemu-pv
(provision of device model to HVM guests and PV backends respectively)
or by libvchan suggesting they are not needed by non-toolstack uses of
event channels.
The new library uses a version script to ensure that only expected
symbols are exported and to version them such that ABI guarantees can
be kept in the future.
After this change libxenvchan no longer needs to link against
libxenctrl. It still needs xenctrl.h in one file for xen_mb and
friends.
Signed-off-by: Ian Campbell <ian.campbell@citrix.com>
Acked-by: Wei Liu <wei.liu2@citrix.com>
[ ijc -- updated MINIOS_UPSTREAM_REVISION and QEMU_TRADITIONAL_REVISION ]
112 lines
3.1 KiB
C
112 lines
3.1 KiB
C
/*
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* Compat shims for use of 3rd party consumers of libxenctrl xc_gnt{tab,shr}
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* functionality which has been split into separate libraries.
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*/
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#include <xengnttab.h>
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#define XC_WANT_COMPAT_GNTTAB_API
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#include "xenctrl.h"
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xc_gnttab *xc_gnttab_open(xentoollog_logger *logger,
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unsigned open_flags)
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{
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return xengnttab_open(logger, open_flags);
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}
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int xc_gnttab_close(xc_gnttab *xcg)
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{
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return xengnttab_close(xcg);
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}
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void *xc_gnttab_map_grant_ref(xc_gnttab *xcg,
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uint32_t domid,
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uint32_t ref,
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int prot)
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{
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return xengnttab_map_grant_ref(xcg, domid, ref, prot);
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}
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void *xc_gnttab_map_grant_refs(xc_gnttab *xcg,
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uint32_t count,
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uint32_t *domids,
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uint32_t *refs,
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int prot)
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{
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return xengnttab_map_grant_refs(xcg, count, domids, refs, prot);
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}
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void *xc_gnttab_map_domain_grant_refs(xc_gnttab *xcg,
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uint32_t count,
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uint32_t domid,
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uint32_t *refs,
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int prot)
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{
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return xengnttab_map_domain_grant_refs(xcg, count, domid, refs, prot);
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}
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void *xc_gnttab_map_grant_ref_notify(xc_gnttab *xcg,
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uint32_t domid,
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uint32_t ref,
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int prot,
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uint32_t notify_offset,
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evtchn_port_t notify_port)
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{
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return xengnttab_map_grant_ref_notify(xcg, domid, ref, prot,
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notify_offset, notify_port);
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}
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int xc_gnttab_munmap(xc_gnttab *xcg,
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void *start_address,
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uint32_t count)
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{
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return xengnttab_unmap(xcg, start_address, count);
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}
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int xc_gnttab_set_max_grants(xc_gnttab *xcg,
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uint32_t count)
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{
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return xengnttab_set_max_grants(xcg, count);
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}
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xc_gntshr *xc_gntshr_open(xentoollog_logger *logger,
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unsigned open_flags)
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{
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return xengntshr_open(logger, open_flags);
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}
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int xc_gntshr_close(xc_gntshr *xcg)
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{
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return xengntshr_close(xcg);
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}
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void *xc_gntshr_share_pages(xc_gntshr *xcg, uint32_t domid,
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int count, uint32_t *refs, int writable)
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{
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return xengntshr_share_pages(xcg, domid, count, refs, writable);
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}
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void *xc_gntshr_share_page_notify(xc_gntshr *xcg, uint32_t domid,
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uint32_t *ref, int writable,
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uint32_t notify_offset,
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evtchn_port_t notify_port)
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{
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return xengntshr_share_page_notify(xcg, domid, ref, writable,
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notify_offset, notify_port);
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}
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int xc_gntshr_munmap(xc_gntshr *xcg, void *start_address, uint32_t count)
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{
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return xengntshr_unshare(xcg, start_address, count);
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}
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/*
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* Local variables:
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* mode: C
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* c-file-style: "BSD"
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* c-basic-offset: 4
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* tab-width: 4
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* indent-tabs-mode: nil
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* End:
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*/
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