1 /******************************************************************************
2 *
3 * Copyright (c) 2007-2008, D G Murray <Derek.Murray@cl.cam.ac.uk>
4 *
5 * This library is free software; you can redistribute it and/or
6 * modify it under the terms of the GNU Lesser General Public
7 * License as published by the Free Software Foundation;
8 * version 2.1 of the License.
9 *
10 * This library is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * Lesser General Public License for more details.
14 *
15 * You should have received a copy of the GNU Lesser General Public
16 * License along with this library; If not, see <http://www.gnu.org/licenses/>.
17 *
18 * Split out from xc_gnttab.c
19 */
20
21 #include <stdlib.h>
22
23 #include "private.h"
24
xengntshr_open(xentoollog_logger * logger,unsigned open_flags)25 xengntshr_handle *xengntshr_open(xentoollog_logger *logger, unsigned open_flags)
26 {
27 xengntshr_handle *xgs = malloc(sizeof(*xgs));
28 int rc;
29
30 if (!xgs) return NULL;
31
32 xgs->fd = -1;
33 xgs->logger = logger;
34 xgs->logger_tofree = NULL;
35
36 if (!xgs->logger) {
37 xgs->logger = xgs->logger_tofree =
38 (xentoollog_logger*)
39 xtl_createlogger_stdiostream(stderr, XTL_PROGRESS, 0);
40 if (!xgs->logger) goto err;
41 }
42
43 rc = osdep_gntshr_open(xgs);
44 if ( rc < 0 ) goto err;
45
46 return xgs;
47
48 err:
49 osdep_gntshr_close(xgs);
50 xtl_logger_destroy(xgs->logger_tofree);
51 free(xgs);
52 return NULL;
53 }
54
xengntshr_close(xengntshr_handle * xgs)55 int xengntshr_close(xengntshr_handle *xgs)
56 {
57 int rc;
58
59 if ( !xgs )
60 return 0;
61
62 rc = osdep_gntshr_close(xgs);
63 xtl_logger_destroy(xgs->logger_tofree);
64 free(xgs);
65 return rc;
66 }
xengntshr_share_pages(xengntshr_handle * xcg,uint32_t domid,int count,uint32_t * refs,int writable)67 void *xengntshr_share_pages(xengntshr_handle *xcg, uint32_t domid,
68 int count, uint32_t *refs, int writable)
69 {
70 return osdep_gntshr_share_pages(xcg, domid, count, refs, writable, -1, -1);
71 }
72
xengntshr_share_page_notify(xengntshr_handle * xcg,uint32_t domid,uint32_t * ref,int writable,uint32_t notify_offset,evtchn_port_t notify_port)73 void *xengntshr_share_page_notify(xengntshr_handle *xcg, uint32_t domid,
74 uint32_t *ref, int writable,
75 uint32_t notify_offset,
76 evtchn_port_t notify_port)
77 {
78 return osdep_gntshr_share_pages(xcg, domid, 1, ref, writable,
79 notify_offset, notify_port);
80 }
81
xengntshr_unshare(xengntshr_handle * xgs,void * start_address,uint32_t count)82 int xengntshr_unshare(xengntshr_handle *xgs, void *start_address, uint32_t count)
83 {
84 return osdep_gntshr_unshare(xgs, start_address, count);
85 }
86
87 /*
88 * Local variables:
89 * mode: C
90 * c-file-style: "BSD"
91 * c-basic-offset: 4
92 * tab-width: 4
93 * indent-tabs-mode: nil
94 * End:
95 */
96