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 <stdlib.h>
17
18 #include "private.h"
19
all_restrict_cb(Xentoolcore__Active_Handle * ah,domid_t domid)20 static int all_restrict_cb(Xentoolcore__Active_Handle *ah, domid_t domid) {
21 xencall_handle *xcall = CONTAINER_OF(ah, *xcall, tc_ah);
22 return xentoolcore__restrict_by_dup2_null(xcall->fd);
23 }
24
xencall_open(xentoollog_logger * logger,unsigned open_flags)25 xencall_handle *xencall_open(xentoollog_logger *logger, unsigned open_flags)
26 {
27 xencall_handle *xcall = malloc(sizeof(*xcall));
28 int rc;
29
30 if (!xcall) return NULL;
31
32 xcall->fd = -1;
33 xcall->tc_ah.restrict_callback = all_restrict_cb;
34 xentoolcore__register_active_handle(&xcall->tc_ah);
35
36 xcall->flags = open_flags;
37 xcall->buffer_cache_nr = 0;
38
39 xcall->buffer_total_allocations = 0;
40 xcall->buffer_total_releases = 0;
41 xcall->buffer_current_allocations = 0;
42 xcall->buffer_maximum_allocations = 0;
43 xcall->buffer_cache_hits = 0;
44 xcall->buffer_cache_misses = 0;
45 xcall->buffer_cache_toobig = 0;
46 xcall->logger = logger;
47 xcall->logger_tofree = NULL;
48
49 if (!xcall->logger) {
50 xcall->logger = xcall->logger_tofree =
51 (xentoollog_logger*)
52 xtl_createlogger_stdiostream(stderr, XTL_PROGRESS, 0);
53 if (!xcall->logger) goto err;
54 }
55
56 rc = osdep_xencall_open(xcall);
57 if ( rc < 0 ) goto err;
58
59 return xcall;
60
61 err:
62 xentoolcore__deregister_active_handle(&xcall->tc_ah);
63 osdep_xencall_close(xcall);
64 xtl_logger_destroy(xcall->logger_tofree);
65 free(xcall);
66 return NULL;
67 }
68
xencall_close(xencall_handle * xcall)69 int xencall_close(xencall_handle *xcall)
70 {
71 int rc;
72
73 if ( !xcall )
74 return 0;
75
76 xentoolcore__deregister_active_handle(&xcall->tc_ah);
77 rc = osdep_xencall_close(xcall);
78 buffer_release_cache(xcall);
79 xtl_logger_destroy(xcall->logger_tofree);
80 free(xcall);
81 return rc;
82 }
83
xencall0(xencall_handle * xcall,unsigned int op)84 int xencall0(xencall_handle *xcall, unsigned int op)
85 {
86 privcmd_hypercall_t call = {
87 .op = op,
88 };
89
90 return osdep_hypercall(xcall, &call);
91 }
92
xencall1(xencall_handle * xcall,unsigned int op,uint64_t arg1)93 int xencall1(xencall_handle *xcall, unsigned int op,
94 uint64_t arg1)
95 {
96 privcmd_hypercall_t call = {
97 .op = op,
98 .arg = { arg1 },
99 };
100
101 return osdep_hypercall(xcall, &call);
102 }
103
xencall2(xencall_handle * xcall,unsigned int op,uint64_t arg1,uint64_t arg2)104 int xencall2(xencall_handle *xcall, unsigned int op,
105 uint64_t arg1, uint64_t arg2)
106 {
107 privcmd_hypercall_t call = {
108 .op = op,
109 .arg = { arg1, arg2 },
110 };
111
112 return osdep_hypercall(xcall, &call);
113 }
114
xencall3(xencall_handle * xcall,unsigned int op,uint64_t arg1,uint64_t arg2,uint64_t arg3)115 int xencall3(xencall_handle *xcall, unsigned int op,
116 uint64_t arg1, uint64_t arg2, uint64_t arg3)
117 {
118 privcmd_hypercall_t call = {
119 .op = op,
120 .arg = { arg1, arg2, arg3},
121 };
122
123 return osdep_hypercall(xcall, &call);
124 }
125
xencall4(xencall_handle * xcall,unsigned int op,uint64_t arg1,uint64_t arg2,uint64_t arg3,uint64_t arg4)126 int xencall4(xencall_handle *xcall, unsigned int op,
127 uint64_t arg1, uint64_t arg2, uint64_t arg3,
128 uint64_t arg4)
129 {
130 privcmd_hypercall_t call = {
131 .op = op,
132 .arg = { arg1, arg2, arg3, arg4 },
133 };
134
135 return osdep_hypercall(xcall, &call);
136 }
137
xencall5(xencall_handle * xcall,unsigned int op,uint64_t arg1,uint64_t arg2,uint64_t arg3,uint64_t arg4,uint64_t arg5)138 int xencall5(xencall_handle *xcall, unsigned int op,
139 uint64_t arg1, uint64_t arg2, uint64_t arg3,
140 uint64_t arg4, uint64_t arg5)
141 {
142 privcmd_hypercall_t call = {
143 .op = op,
144 .arg = { arg1, arg2, arg3, arg4, arg5 },
145 };
146
147 return osdep_hypercall(xcall, &call);
148 }
149
150 /*
151 * Local variables:
152 * mode: C
153 * c-file-style: "BSD"
154 * c-basic-offset: 4
155 * tab-width: 4
156 * indent-tabs-mode: nil
157 * End:
158 */
159