1 /*
2 * This library is free software; you can redistribute it and/or
3 * modify it under the terms of the GNU Lesser General Public
4 * License as published by the Free Software Foundation;
5 * version 2.1 of the License.
6 *
7 * This library is distributed in the hope that it will be useful,
8 * but WITHOUT ANY WARRANTY; without even the implied warranty of
9 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
10 * Lesser General Public License for more details.
11 *
12 * You should have received a copy of the GNU Lesser General Public
13 * License along with this library; If not, see <http://www.gnu.org/licenses/>.
14 */
15
16 #include <unistd.h>
17 #include <stdlib.h>
18
19 #include "private.h"
20
all_restrict_cb(Xentoolcore__Active_Handle * ah,domid_t domid)21 static int all_restrict_cb(Xentoolcore__Active_Handle *ah, domid_t domid) {
22 xenevtchn_handle *xce = CONTAINER_OF(ah, *xce, tc_ah);
23
24 if (xce->fd < 0)
25 /* just in case */
26 return 0;
27
28 return xenevtchn_restrict(xce, domid);
29 }
30
xenevtchn_open(xentoollog_logger * logger,unsigned open_flags)31 xenevtchn_handle *xenevtchn_open(xentoollog_logger *logger, unsigned open_flags)
32 {
33 xenevtchn_handle *xce = malloc(sizeof(*xce));
34 int rc;
35
36 if (!xce) return NULL;
37
38 xce->fd = -1;
39 xce->logger = logger;
40 xce->logger_tofree = NULL;
41
42 xce->tc_ah.restrict_callback = all_restrict_cb;
43 xentoolcore__register_active_handle(&xce->tc_ah);
44
45 if (!xce->logger) {
46 xce->logger = xce->logger_tofree =
47 (xentoollog_logger*)
48 xtl_createlogger_stdiostream(stderr, XTL_PROGRESS, 0);
49 if (!xce->logger) goto err;
50 }
51
52 rc = osdep_evtchn_open(xce);
53 if ( rc < 0 ) goto err;
54
55 return xce;
56
57 err:
58 xentoolcore__deregister_active_handle(&xce->tc_ah);
59 osdep_evtchn_close(xce);
60 xtl_logger_destroy(xce->logger_tofree);
61 free(xce);
62 return NULL;
63 }
64
xenevtchn_close(xenevtchn_handle * xce)65 int xenevtchn_close(xenevtchn_handle *xce)
66 {
67 int rc;
68
69 if ( !xce )
70 return 0;
71
72 xentoolcore__deregister_active_handle(&xce->tc_ah);
73 rc = osdep_evtchn_close(xce);
74 xtl_logger_destroy(xce->logger_tofree);
75 free(xce);
76 return rc;
77 }
78
xenevtchn_restrict(xenevtchn_handle * xce,domid_t domid)79 int xenevtchn_restrict(xenevtchn_handle *xce, domid_t domid)
80 {
81 return osdep_evtchn_restrict(xce, domid);
82 }
83
84 /*
85 * Local variables:
86 * mode: C
87 * c-file-style: "BSD"
88 * c-basic-offset: 4
89 * tab-width: 4
90 * indent-tabs-mode: nil
91 * End:
92 */
93