1 /******************************************************************************
2 *
3 * Copyright (c) 2007-2008, D G Murray <Derek.Murray@cl.cam.ac.uk>
4 * Copyright (c) 2018, Oleksandr Andrushchenko, EPAM Systems Inc.
5 *
6 * This library is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Lesser General Public
8 * License as published by the Free Software Foundation;
9 * version 2.1 of the License.
10 *
11 * This library is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * Lesser General Public License for more details.
15 *
16 * You should have received a copy of the GNU Lesser General Public
17 * License along with this library; If not, see <http://www.gnu.org/licenses/>.
18 *
19 * Split out from xc_gnttab.c
20 */
21
22 #include <stdlib.h>
23
24 #include "private.h"
25
all_restrict_cb(Xentoolcore__Active_Handle * ah,domid_t domid)26 static int all_restrict_cb(Xentoolcore__Active_Handle *ah, domid_t domid) {
27 xengnttab_handle *xgt = CONTAINER_OF(ah, *xgt, tc_ah);
28 return xentoolcore__restrict_by_dup2_null(xgt->fd);
29 }
30
xengnttab_open(xentoollog_logger * logger,unsigned open_flags)31 xengnttab_handle *xengnttab_open(xentoollog_logger *logger, unsigned open_flags)
32 {
33 xengnttab_handle *xgt = malloc(sizeof(*xgt));
34 int rc;
35
36 if (!xgt) return NULL;
37
38 xgt->fd = -1;
39 xgt->logger = logger;
40 xgt->logger_tofree = NULL;
41
42 xgt->tc_ah.restrict_callback = all_restrict_cb;
43 xentoolcore__register_active_handle(&xgt->tc_ah);
44
45 if (!xgt->logger) {
46 xgt->logger = xgt->logger_tofree =
47 (xentoollog_logger*)
48 xtl_createlogger_stdiostream(stderr, XTL_PROGRESS, 0);
49 if (!xgt->logger) goto err;
50 }
51
52 rc = osdep_gnttab_open(xgt);
53 if ( rc < 0 ) goto err;
54
55 return xgt;
56
57 err:
58 xentoolcore__deregister_active_handle(&xgt->tc_ah);
59 osdep_gnttab_close(xgt);
60 xtl_logger_destroy(xgt->logger_tofree);
61 free(xgt);
62 return NULL;
63 }
64
xengnttab_close(xengnttab_handle * xgt)65 int xengnttab_close(xengnttab_handle *xgt)
66 {
67 int rc;
68
69 if ( !xgt )
70 return 0;
71
72 xentoolcore__deregister_active_handle(&xgt->tc_ah);
73 rc = osdep_gnttab_close(xgt);
74 xtl_logger_destroy(xgt->logger_tofree);
75 free(xgt);
76 return rc;
77 }
78
xengnttab_fd(xengnttab_handle * xgt)79 int xengnttab_fd(xengnttab_handle *xgt)
80 {
81 return xgt->fd;
82 }
83
xengnttab_set_max_grants(xengnttab_handle * xgt,uint32_t count)84 int xengnttab_set_max_grants(xengnttab_handle *xgt, uint32_t count)
85 {
86 return osdep_gnttab_set_max_grants(xgt, count);
87 }
88
xengnttab_map_grant_ref(xengnttab_handle * xgt,uint32_t domid,uint32_t ref,int prot)89 void *xengnttab_map_grant_ref(xengnttab_handle *xgt,
90 uint32_t domid,
91 uint32_t ref,
92 int prot)
93 {
94 return osdep_gnttab_grant_map(xgt, 1, 0, prot, &domid, &ref, -1, -1);
95 }
96
xengnttab_map_grant_refs(xengnttab_handle * xgt,uint32_t count,uint32_t * domids,uint32_t * refs,int prot)97 void *xengnttab_map_grant_refs(xengnttab_handle *xgt,
98 uint32_t count,
99 uint32_t *domids,
100 uint32_t *refs,
101 int prot)
102 {
103 return osdep_gnttab_grant_map(xgt, count, 0, prot, domids, refs, -1, -1);
104 }
105
xengnttab_map_domain_grant_refs(xengnttab_handle * xgt,uint32_t count,uint32_t domid,uint32_t * refs,int prot)106 void *xengnttab_map_domain_grant_refs(xengnttab_handle *xgt,
107 uint32_t count,
108 uint32_t domid,
109 uint32_t *refs,
110 int prot)
111 {
112 return osdep_gnttab_grant_map(xgt, count, XENGNTTAB_GRANT_MAP_SINGLE_DOMAIN,
113 prot, &domid, refs, -1, -1);
114 }
115
xengnttab_map_grant_ref_notify(xengnttab_handle * xgt,uint32_t domid,uint32_t ref,int prot,uint32_t notify_offset,evtchn_port_t notify_port)116 void *xengnttab_map_grant_ref_notify(xengnttab_handle *xgt,
117 uint32_t domid,
118 uint32_t ref,
119 int prot,
120 uint32_t notify_offset,
121 evtchn_port_t notify_port)
122 {
123 return osdep_gnttab_grant_map(xgt, 1, 0, prot, &domid, &ref,
124 notify_offset, notify_port);
125 }
126
xengnttab_unmap(xengnttab_handle * xgt,void * start_address,uint32_t count)127 int xengnttab_unmap(xengnttab_handle *xgt, void *start_address, uint32_t count)
128 {
129 return osdep_gnttab_unmap(xgt, start_address, count);
130 }
131
xengnttab_grant_copy(xengnttab_handle * xgt,uint32_t count,xengnttab_grant_copy_segment_t * segs)132 int xengnttab_grant_copy(xengnttab_handle *xgt,
133 uint32_t count,
134 xengnttab_grant_copy_segment_t *segs)
135 {
136 return osdep_gnttab_grant_copy(xgt, count, segs);
137 }
138
xengnttab_dmabuf_exp_from_refs(xengnttab_handle * xgt,uint32_t domid,uint32_t flags,uint32_t count,const uint32_t * refs,uint32_t * fd)139 int xengnttab_dmabuf_exp_from_refs(xengnttab_handle *xgt, uint32_t domid,
140 uint32_t flags, uint32_t count,
141 const uint32_t *refs, uint32_t *fd)
142 {
143 return osdep_gnttab_dmabuf_exp_from_refs(xgt, domid, flags, count,
144 refs, fd);
145 }
146
xengnttab_dmabuf_exp_wait_released(xengnttab_handle * xgt,uint32_t fd,uint32_t wait_to_ms)147 int xengnttab_dmabuf_exp_wait_released(xengnttab_handle *xgt, uint32_t fd,
148 uint32_t wait_to_ms)
149 {
150 return osdep_gnttab_dmabuf_exp_wait_released(xgt, fd, wait_to_ms);
151 }
152
xengnttab_dmabuf_imp_to_refs(xengnttab_handle * xgt,uint32_t domid,uint32_t fd,uint32_t count,uint32_t * refs)153 int xengnttab_dmabuf_imp_to_refs(xengnttab_handle *xgt, uint32_t domid,
154 uint32_t fd, uint32_t count, uint32_t *refs)
155 {
156 return osdep_gnttab_dmabuf_imp_to_refs(xgt, domid, fd, count, refs);
157 }
158
xengnttab_dmabuf_imp_release(xengnttab_handle * xgt,uint32_t fd)159 int xengnttab_dmabuf_imp_release(xengnttab_handle *xgt, uint32_t fd)
160 {
161 return osdep_gnttab_dmabuf_imp_release(xgt, fd);
162 }
163 /*
164 * Local variables:
165 * mode: C
166 * c-file-style: "BSD"
167 * c-basic-offset: 4
168 * tab-width: 4
169 * indent-tabs-mode: nil
170 * End:
171 */
172