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Igor Druzhinin
143e0c2c2d
The new function repeats the behavior of the first version except it has an extended list of arguments which are subsequently passed to mmap() call. This is needed for QEMU depriviledging. Signed-off-by: Igor Druzhinin <igor.druzhinin@citrix.com> Reviewed-by: Andrew Cooper <andrew.cooper3@citrix.com> Acked-by: Wei Liu <wei.liu2@citrix.com>
73 lines
1.9 KiB
C
73 lines
1.9 KiB
C
/* Compatibility functions for mapping foreign domain's memory.
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*
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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_foreign_memory.c
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*/
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#if !defined(__NetBSD__) && !defined(__sun__)
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#error Please implement osdep_xenforeignmemory_map directly for new ports.
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#endif
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#include "private.h"
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void *osdep_xenforeignmemory_map(xenforeignmemory_handle *fmem, uint32_t dom,
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void *addr, int prot, int flags, size_t num,
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const xen_pfn_t arr[/*num*/], int err[/*num*/])
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{
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xen_pfn_t *pfn;
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unsigned int i;
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void *ret;
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if ((int)num <= 0) {
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errno = EINVAL;
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return NULL;
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}
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pfn = malloc(num * sizeof(*pfn));
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if (!pfn) {
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errno = ENOMEM;
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return NULL;
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}
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memcpy(pfn, arr, num * sizeof(*arr));
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ret = osdep_map_foreign_batch(fmem, dom, addr, prot, flags, pfn, num);
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if (ret) {
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for (i = 0; i < num; ++i)
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switch (pfn[i] ^ arr[i]) {
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case 0:
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err[i] = 0;
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break;
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default:
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err[i] = -EINVAL;
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break;
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}
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} else
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memset(err, 0, num * sizeof(*err));
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free(pfn);
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return ret;
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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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