debuggers.hg

view tools/libxc/xc_solaris.c @ 16408:f669bf5c6720

libxc: Consolidate read()/write() syscall wrappers to read/write an
exact number of bytes. The consolidated versions are more watertight
than the various versions previously distributed around the library
source code.
Signed-off-by: Keir Fraser <keir@xensource.com>
author Keir Fraser <keir@xensource.com>
date Sun Nov 11 18:22:33 2007 +0000 (2007-11-11)
parents fdffab15499d
children 7299346111fb
line source
1 /******************************************************************************
2 *
3 * Copyright 2006 Sun Microsystems, Inc. All rights reserved.
4 * Use is subject to license terms.
5 *
6 * This program is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU General Public License as
8 * published by the Free Software Foundation, version 2 of the
9 * License.
10 */
12 #include "xc_private.h"
14 #include <xen/memory.h>
15 #include <xen/sys/evtchn.h>
16 #include <unistd.h>
17 #include <fcntl.h>
19 int xc_interface_open(void)
20 {
21 int flags, saved_errno;
22 int fd = open("/dev/xen/privcmd", O_RDWR);
24 if ( fd == -1 )
25 {
26 PERROR("Could not obtain handle on privileged command interface");
27 return -1;
28 }
30 /* Although we return the file handle as the 'xc handle' the API
31 does not specify / guarentee that this integer is in fact
32 a file handle. Thus we must take responsiblity to ensure
33 it doesn't propagate (ie leak) outside the process */
34 if ( (flags = fcntl(fd, F_GETFD)) < 0 )
35 {
36 PERROR("Could not get file handle flags");
37 goto error;
38 }
39 flags |= FD_CLOEXEC;
40 if ( fcntl(fd, F_SETFD, flags) < 0 )
41 {
42 PERROR("Could not set file handle flags");
43 goto error;
44 }
46 return fd;
48 error:
49 saved_errno = errno;
50 close(fd);
51 errno = saved_errno;
52 return -1;
53 }
55 int xc_interface_close(int xc_handle)
56 {
57 return close(xc_handle);
58 }
60 void *xc_map_foreign_batch(int xc_handle, uint32_t dom, int prot,
61 xen_pfn_t *arr, int num)
62 {
63 privcmd_mmapbatch_t ioctlx;
64 void *addr;
65 addr = mmap(NULL, num*PAGE_SIZE, prot, MAP_SHARED, xc_handle, 0);
66 if ( addr == MAP_FAILED )
67 return NULL;
69 ioctlx.num=num;
70 ioctlx.dom=dom;
71 ioctlx.addr=(unsigned long)addr;
72 ioctlx.arr=arr;
73 if ( ioctl(xc_handle, IOCTL_PRIVCMD_MMAPBATCH, &ioctlx) < 0 )
74 {
75 int saved_errno = errno;
76 perror("XXXXXXXX");
77 (void)munmap(addr, num*PAGE_SIZE);
78 errno = saved_errno;
79 return NULL;
80 }
81 return addr;
83 }
85 void *xc_map_foreign_range(int xc_handle, uint32_t dom,
86 int size, int prot,
87 unsigned long mfn)
88 {
89 privcmd_mmap_t ioctlx;
90 privcmd_mmap_entry_t entry;
91 void *addr;
92 addr = mmap(NULL, size, prot, MAP_SHARED, xc_handle, 0);
93 if ( addr == MAP_FAILED )
94 return NULL;
96 ioctlx.num=1;
97 ioctlx.dom=dom;
98 ioctlx.entry=&entry;
99 entry.va=(unsigned long) addr;
100 entry.mfn=mfn;
101 entry.npages=(size+PAGE_SIZE-1)>>PAGE_SHIFT;
102 if ( ioctl(xc_handle, IOCTL_PRIVCMD_MMAP, &ioctlx) < 0 )
103 {
104 int saved_errno = errno;
105 (void)munmap(addr, size);
106 errno = saved_errno;
107 return NULL;
108 }
109 return addr;
110 }
112 int xc_map_foreign_ranges(int xc_handle, uint32_t dom,
113 privcmd_mmap_entry_t *entries, int nr)
114 {
115 privcmd_mmap_t ioctlx;
117 ioctlx.num = nr;
118 ioctlx.dom = dom;
119 ioctlx.entry = entries;
121 return ioctl(xc_handle, IOCTL_PRIVCMD_MMAP, &ioctlx);
122 }
124 static int do_privcmd(int xc_handle, unsigned int cmd, unsigned long data)
125 {
126 return ioctl(xc_handle, cmd, data);
127 }
129 int do_xen_hypercall(int xc_handle, privcmd_hypercall_t *hypercall)
130 {
131 return do_privcmd(xc_handle,
132 IOCTL_PRIVCMD_HYPERCALL,
133 (unsigned long)hypercall);
134 }
136 int xc_evtchn_open(void)
137 {
138 int fd;
140 if ( (fd = open("/dev/xen/evtchn", O_RDWR)) == -1 )
141 {
142 PERROR("Could not open event channel interface");
143 return -1;
144 }
146 return fd;
147 }
149 int xc_evtchn_close(int xce_handle)
150 {
151 return close(xce_handle);
152 }
154 int xc_evtchn_fd(int xce_handle)
155 {
156 return xce_handle;
157 }
159 int xc_evtchn_notify(int xce_handle, evtchn_port_t port)
160 {
161 struct ioctl_evtchn_notify notify;
163 notify.port = port;
165 return ioctl(xce_handle, IOCTL_EVTCHN_NOTIFY, &notify);
166 }
168 evtchn_port_or_error_t
169 xc_evtchn_bind_unbound_port(int xce_handle, int domid)
170 {
171 struct ioctl_evtchn_bind_unbound_port bind;
173 bind.remote_domain = domid;
175 return ioctl(xce_handle, IOCTL_EVTCHN_BIND_UNBOUND_PORT, &bind);
176 }
178 evtchn_port_or_error_t
179 xc_evtchn_bind_interdomain(int xce_handle, int domid,
180 evtchn_port_t remote_port)
181 {
182 struct ioctl_evtchn_bind_interdomain bind;
184 bind.remote_domain = domid;
185 bind.remote_port = remote_port;
187 return ioctl(xce_handle, IOCTL_EVTCHN_BIND_INTERDOMAIN, &bind);
188 }
190 evtchn_port_or_error_t
191 xc_evtchn_bind_virq(int xce_handle, unsigned int virq)
192 {
193 struct ioctl_evtchn_bind_virq bind;
195 bind.virq = virq;
197 return ioctl(xce_handle, IOCTL_EVTCHN_BIND_VIRQ, &bind);
198 }
200 int xc_evtchn_unbind(int xce_handle, evtchn_port_t port)
201 {
202 struct ioctl_evtchn_unbind unbind;
204 unbind.port = port;
206 return ioctl(xce_handle, IOCTL_EVTCHN_UNBIND, &unbind);
207 }
209 evtchn_port_or_error_t
210 xc_evtchn_pending(int xce_handle)
211 {
212 evtchn_port_t port;
214 if ( read_exact(xce_handle, (char *)&port, sizeof(port)) == -1 )
215 return -1;
217 return port;
218 }
220 int xc_evtchn_unmask(int xce_handle, evtchn_port_t port)
221 {
222 return write_exact(xce_handle, (char *)&port, sizeof(port));
223 }
225 /* Optionally flush file to disk and discard page cache */
226 void discard_file_cache(int fd, int flush)
227 {
228 // TODO: Implement for Solaris!
229 }