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Ian Campbell
0be403a41f
And require it be used instead of direct munmap. This will allow e.g. Valgrind hooks to help track incorrect use of foreign mappings. Switch all uses of xenforeignmemory_map to use xenforeignmemory_unmap, not that foreign mappings via the libxc compat xc_map_foreign_* interface will not take advantage of this and will need converting. Signed-off-by: Ian Campbell <ian.campbell@citrix.com> Acked-by: Wei Liu <wei.liu2@citrix.com> Acked-by: Ian Jackson <ian.jackson@eu.citrix.com>
69 lines
1.8 KiB
C
69 lines
1.8 KiB
C
/*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation;
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* version 2.1 of the License.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; If not, see <http://www.gnu.org/licenses/>.
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*
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* Split out from xc_minios.c
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*
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* Copyright 2007-2008 Samuel Thibault <samuel.thibault@eu.citrix.com>.
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*/
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#include <mini-os/types.h>
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#include <mini-os/os.h>
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#include <mini-os/mm.h>
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#include <mini-os/lib.h>
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#include <errno.h>
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#include <sys/mman.h>
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#include "private.h"
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int osdep_xenforeignmemory_open(xenforeignmemory_handle *fmem)
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{
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/* No fd required */
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return 0;
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}
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int osdep_xenforeignmemory_close(xenforeignmemory_handle *fmem)
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{
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return 0;
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}
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void *osdep_xenforeignmemory_map(xenforeignmemory_handle *fmem,
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uint32_t dom, int prot,
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const xen_pfn_t *arr, int *err, unsigned int num)
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{
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unsigned long pt_prot = 0;
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if (prot & PROT_READ)
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pt_prot = L1_PROT_RO;
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if (prot & PROT_WRITE)
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pt_prot = L1_PROT;
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return map_frames_ex(arr, num, 1, 0, 1, dom, err, pt_prot);
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}
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int osdep_xenforeignmemory_unmap(xenforeignmemory_handle *fmem,
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void *addr, unsigned int num)
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{
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return munmap(addr, num << PAGE_SHIFT);
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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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