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1 |
/*
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* QEMU System Emulator
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3 |
*
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4 |
* Copyright (c) 2003-2008 Fabrice Bellard
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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7 |
* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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9 |
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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11 |
* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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18 |
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*/
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24 |
#include "hw/hw.h"
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|
25 |
#include "hw/boards.h"
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|
26 |
#include "hw/usb.h"
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|
27 |
#include "hw/pcmcia.h"
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|
28 |
#include "hw/pc.h"
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|
29 |
#include "hw/audiodev.h"
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|
30 |
#include "hw/isa.h"
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|
31 |
#include "hw/baum.h"
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|
32 |
#include "hw/bt.h"
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|
33 |
#include "net.h"
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|
34 |
#include "console.h"
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|
35 |
#include "sysemu.h"
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|
36 |
#include "gdbstub.h"
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|
37 |
#include "qemu-timer.h"
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|
38 |
#include "qemu-char.h"
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|
39 |
#include "block.h"
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|
40 |
#include "audio/audio.h"
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|
41 |
#include "migration.h"
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|
42 |
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|
43 |
#include <unistd.h>
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|
44 |
#include <fcntl.h>
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|
45 |
#include <signal.h>
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46 |
#include <time.h>
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|
47 |
#include <errno.h>
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|
48 |
#include <sys/time.h>
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|
49 |
#include <zlib.h>
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|
50 |
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|
51 |
#ifndef _WIN32
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|
52 |
#include <sys/times.h>
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|
53 |
#include <sys/wait.h>
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|
54 |
#include <termios.h>
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55 |
#include <sys/mman.h>
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|
56 |
#include <sys/ioctl.h>
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|
57 |
#include <sys/socket.h>
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|
58 |
#include <netinet/in.h>
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|
59 |
#include <dirent.h>
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|
60 |
#include <netdb.h>
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61 |
#include <sys/select.h>
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62 |
#include <arpa/inet.h>
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63 |
#ifdef _BSD
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|
64 |
#include <sys/stat.h>
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|
65 |
#if !defined(__APPLE__) && !defined(__OpenBSD__)
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|
66 |
#include <libutil.h>
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|
67 |
#endif
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|
68 |
#ifdef __OpenBSD__
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|
69 |
#include <net/if.h>
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|
70 |
#endif
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|
71 |
#elif defined (__GLIBC__) && defined (__FreeBSD_kernel__)
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|
72 |
#include <freebsd/stdlib.h>
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|
73 |
#else
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|
74 |
#ifdef __linux__
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|
75 |
#include <linux/if.h>
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|
76 |
#include <linux/if_tun.h>
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|
77 |
#include <pty.h>
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|
78 |
#include <malloc.h>
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|
79 |
#include <linux/rtc.h>
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|
80 |
|
|
81 |
/* For the benefit of older linux systems which don't supply it,
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|
82 |
we use a local copy of hpet.h. */
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|
83 |
/* #include <linux/hpet.h> */
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|
84 |
#include "hpet.h"
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85 |
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|
86 |
#include <linux/ppdev.h>
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|
87 |
#include <linux/parport.h>
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|
88 |
#endif
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|
89 |
#ifdef __sun__
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|
90 |
#include <sys/stat.h>
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|
91 |
#include <sys/ethernet.h>
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|
92 |
#include <sys/sockio.h>
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|
93 |
#include <netinet/arp.h>
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|
94 |
#include <netinet/in.h>
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|
95 |
#include <netinet/in_systm.h>
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|
96 |
#include <netinet/ip.h>
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|
97 |
#include <netinet/ip_icmp.h> // must come after ip.h
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|
98 |
#include <netinet/udp.h>
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|
99 |
#include <netinet/tcp.h>
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|
100 |
#include <net/if.h>
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|
101 |
#include <syslog.h>
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|
102 |
#include <stropts.h>
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|
103 |
#endif
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|
104 |
#endif
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|
105 |
#endif
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|
106 |
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|
107 |
#include "qemu_socket.h"
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|
108 |
|
|
109 |
#if defined(CONFIG_SLIRP)
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|
110 |
#include "libslirp.h"
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|
111 |
#endif
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|
112 |
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|
113 |
#if defined(__OpenBSD__)
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|
114 |
#include <util.h>
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|
115 |
#endif
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|
116 |
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|
117 |
#if defined(CONFIG_VDE)
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|
118 |
#include <libvdeplug.h>
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|
119 |
#endif
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|
120 |
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|
121 |
#ifdef _WIN32
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|
122 |
#include <malloc.h>
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|
123 |
#include <sys/timeb.h>
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|
124 |
#include <mmsystem.h>
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|
125 |
#define getopt_long_only getopt_long
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|
126 |
#define memalign(align, size) malloc(size)
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|
127 |
#endif
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|
128 |
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|
129 |
#define DEFAULT_NETWORK_SCRIPT "/etc/qemu-ifup"
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|
130 |
#define DEFAULT_NETWORK_DOWN_SCRIPT "/etc/qemu-ifdown"
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|
131 |
#ifdef __sun__
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|
132 |
#define SMBD_COMMAND "/usr/sfw/sbin/smbd"
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|
133 |
#else
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|
134 |
#define SMBD_COMMAND "/usr/sbin/smbd"
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|
135 |
#endif
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136 |
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|
137 |
static VLANState *first_vlan;
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|
138 |
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|
139 |
/***********************************************************/
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|
140 |
/* network device redirectors */
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141 |
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|
142 |
#if defined(DEBUG_NET) || defined(DEBUG_SLIRP)
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|
143 |
static void hex_dump(FILE *f, const uint8_t *buf, int size)
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|
144 |
{
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|
145 |
int len, i, j, c;
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|
146 |
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|
147 |
for(i=0;i<size;i+=16) {
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|
148 |
len = size - i;
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|
149 |
if (len > 16)
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|
150 |
len = 16;
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|
151 |
fprintf(f, "%08x ", i);
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|
152 |
for(j=0;j<16;j++) {
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|
153 |
if (j < len)
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|
154 |
fprintf(f, " %02x", buf[i+j]);
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|
155 |
else
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|
156 |
fprintf(f, " ");
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|
157 |
}
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|
158 |
fprintf(f, " ");
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|
159 |
for(j=0;j<len;j++) {
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|
160 |
c = buf[i+j];
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|
161 |
if (c < ' ' || c > '~')
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|
162 |
c = '.';
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|
163 |
fprintf(f, "%c", c);
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|
164 |
}
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|
165 |
fprintf(f, "\n");
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|
166 |
}
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|
167 |
}
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|
168 |
#endif
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|
169 |
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|
170 |
static int parse_macaddr(uint8_t *macaddr, const char *p)
|
|
171 |
{
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|
172 |
int i;
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|
173 |
char *last_char;
|
|
174 |
long int offset;
|
|
175 |
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|
176 |
errno = 0;
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|
177 |
offset = strtol(p, &last_char, 0);
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|
178 |
if (0 == errno && '\0' == *last_char &&
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179 |
offset >= 0 && offset <= 0xFFFFFF) {
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180 |
macaddr[3] = (offset & 0xFF0000) >> 16;
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181 |
macaddr[4] = (offset & 0xFF00) >> 8;
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182 |
macaddr[5] = offset & 0xFF;
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183 |
return 0;
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184 |
} else {
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185 |
for(i = 0; i < 6; i++) {
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186 |
macaddr[i] = strtol(p, (char **)&p, 16);
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187 |
if (i == 5) {
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|
188 |
if (*p != '\0')
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189 |
return -1;
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190 |
} else {
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191 |
if (*p != ':' && *p != '-')
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192 |
return -1;
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193 |
p++;
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194 |
}
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195 |
}
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196 |
return 0;
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|
197 |
}
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198 |
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199 |
return -1;
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|
200 |
}
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201 |
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202 |
static int get_str_sep(char *buf, int buf_size, const char **pp, int sep)
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203 |
{
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|
204 |
const char *p, *p1;
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205 |
int len;
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206 |
p = *pp;
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207 |
p1 = strchr(p, sep);
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208 |
if (!p1)
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209 |
return -1;
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210 |
len = p1 - p;
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211 |
p1++;
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212 |
if (buf_size > 0) {
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213 |
if (len > buf_size - 1)
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214 |
len = buf_size - 1;
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215 |
memcpy(buf, p, len);
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|
216 |
buf[len] = '\0';
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|
217 |
}
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|
218 |
*pp = p1;
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219 |
return 0;
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|
220 |
}
|
|
221 |
|
|
222 |
int parse_host_src_port(struct sockaddr_in *haddr,
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|
223 |
struct sockaddr_in *saddr,
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|
224 |
const char *input_str)
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|
225 |
{
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|
226 |
char *str = strdup(input_str);
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|
227 |
char *host_str = str;
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|
228 |
char *src_str;
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|
229 |
const char *src_str2;
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|
230 |
char *ptr;
|
|
231 |
|
|
232 |
/*
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|
233 |
* Chop off any extra arguments at the end of the string which
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234 |
* would start with a comma, then fill in the src port information
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235 |
* if it was provided else use the "any address" and "any port".
|
|
236 |
*/
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|
237 |
if ((ptr = strchr(str,',')))
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|
238 |
*ptr = '\0';
|
|
239 |
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|
240 |
if ((src_str = strchr(input_str,'@'))) {
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|
241 |
*src_str = '\0';
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|
242 |
src_str++;
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|
243 |
}
|
|
244 |
|
|
245 |
if (parse_host_port(haddr, host_str) < 0)
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|
246 |
goto fail;
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|
247 |
|
|
248 |
src_str2 = src_str;
|
|
249 |
if (!src_str || *src_str == '\0')
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|
250 |
src_str2 = ":0";
|
|
251 |
|
|
252 |
if (parse_host_port(saddr, src_str2) < 0)
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|
253 |
goto fail;
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|
254 |
|
|
255 |
free(str);
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|
256 |
return(0);
|
|
257 |
|
|
258 |
fail:
|
|
259 |
free(str);
|
|
260 |
return -1;
|
|
261 |
}
|
|
262 |
|
|
263 |
int parse_host_port(struct sockaddr_in *saddr, const char *str)
|
|
264 |
{
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|
265 |
char buf[512];
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|
266 |
struct hostent *he;
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|
267 |
const char *p, *r;
|
|
268 |
int port;
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|
269 |
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|
270 |
p = str;
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|
271 |
if (get_str_sep(buf, sizeof(buf), &p, ':') < 0)
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|
272 |
return -1;
|
|
273 |
saddr->sin_family = AF_INET;
|
|
274 |
if (buf[0] == '\0') {
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|
275 |
saddr->sin_addr.s_addr = 0;
|
|
276 |
} else {
|
|
277 |
if (isdigit(buf[0])) {
|
|
278 |
if (!inet_aton(buf, &saddr->sin_addr))
|
|
279 |
return -1;
|
|
280 |
} else {
|
|
281 |
if ((he = gethostbyname(buf)) == NULL)
|
|
282 |
return - 1;
|
|
283 |
saddr->sin_addr = *(struct in_addr *)he->h_addr;
|
|
284 |
}
|
|
285 |
}
|
|
286 |
port = strtol(p, (char **)&r, 0);
|
|
287 |
if (r == p)
|
|
288 |
return -1;
|
|
289 |
saddr->sin_port = htons(port);
|
|
290 |
return 0;
|
|
291 |
}
|
|
292 |
|
|
293 |
#ifndef _WIN32
|
|
294 |
int parse_unix_path(struct sockaddr_un *uaddr, const char *str)
|
|
295 |
{
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|
296 |
const char *p;
|
|
297 |
int len;
|
|
298 |
|
|
299 |
len = MIN(108, strlen(str));
|
|
300 |
p = strchr(str, ',');
|
|
301 |
if (p)
|
|
302 |
len = MIN(len, p - str);
|
|
303 |
|
|
304 |
memset(uaddr, 0, sizeof(*uaddr));
|
|
305 |
|
|
306 |
uaddr->sun_family = AF_UNIX;
|
|
307 |
memcpy(uaddr->sun_path, str, len);
|
|
308 |
|
|
309 |
return 0;
|
|
310 |
}
|
|
311 |
#endif
|
|
312 |
|
|
313 |
VLANClientState *qemu_new_vlan_client(VLANState *vlan,
|
|
314 |
IOReadHandler *fd_read,
|
|
315 |
IOCanRWHandler *fd_can_read,
|
|
316 |
void *opaque)
|
|
317 |
{
|
|
318 |
VLANClientState *vc, **pvc;
|
|
319 |
vc = qemu_mallocz(sizeof(VLANClientState));
|
|
320 |
if (!vc)
|
|
321 |
return NULL;
|
|
322 |
vc->fd_read = fd_read;
|
|
323 |
vc->fd_can_read = fd_can_read;
|
|
324 |
vc->opaque = opaque;
|
|
325 |
vc->vlan = vlan;
|
|
326 |
|
|
327 |
vc->next = NULL;
|
|
328 |
pvc = &vlan->first_client;
|
|
329 |
while (*pvc != NULL)
|
|
330 |
pvc = &(*pvc)->next;
|
|
331 |
*pvc = vc;
|
|
332 |
return vc;
|
|
333 |
}
|
|
334 |
|
|
335 |
void qemu_del_vlan_client(VLANClientState *vc)
|
|
336 |
{
|
|
337 |
VLANClientState **pvc = &vc->vlan->first_client;
|
|
338 |
|
|
339 |
while (*pvc != NULL)
|
|
340 |
if (*pvc == vc) {
|
|
341 |
*pvc = vc->next;
|
|
342 |
free(vc);
|
|
343 |
break;
|
|
344 |
} else
|
|
345 |
pvc = &(*pvc)->next;
|
|
346 |
}
|
|
347 |
|
|
348 |
int qemu_can_send_packet(VLANClientState *vc1)
|
|
349 |
{
|
|
350 |
VLANState *vlan = vc1->vlan;
|
|
351 |
VLANClientState *vc;
|
|
352 |
|
|
353 |
for(vc = vlan->first_client; vc != NULL; vc = vc->next) {
|
|
354 |
if (vc != vc1) {
|
|
355 |
if (vc->fd_can_read && vc->fd_can_read(vc->opaque))
|
|
356 |
return 1;
|
|
357 |
}
|
|
358 |
}
|
|
359 |
return 0;
|
|
360 |
}
|
|
361 |
|
|
362 |
void qemu_send_packet(VLANClientState *vc1, const uint8_t *buf, int size)
|
|
363 |
{
|
|
364 |
VLANState *vlan = vc1->vlan;
|
|
365 |
VLANClientState *vc;
|
|
366 |
|
|
367 |
#ifdef DEBUG_NET
|
|
368 |
printf("vlan %d send:\n", vlan->id);
|
|
369 |
hex_dump(stdout, buf, size);
|
|
370 |
#endif
|
|
371 |
for(vc = vlan->first_client; vc != NULL; vc = vc->next) {
|
|
372 |
if (vc != vc1) {
|
|
373 |
vc->fd_read(vc->opaque, buf, size);
|
|
374 |
}
|
|
375 |
}
|
|
376 |
}
|
|
377 |
|
|
378 |
#if defined(CONFIG_SLIRP)
|
|
379 |
|
|
380 |
/* slirp network adapter */
|
|
381 |
|
|
382 |
static int slirp_inited;
|
|
383 |
static VLANClientState *slirp_vc;
|
|
384 |
|
|
385 |
int slirp_can_output(void)
|
|
386 |
{
|
|
387 |
return !slirp_vc || qemu_can_send_packet(slirp_vc);
|
|
388 |
}
|
|
389 |
|
|
390 |
void slirp_output(const uint8_t *pkt, int pkt_len)
|
|
391 |
{
|
|
392 |
#ifdef DEBUG_SLIRP
|
|
393 |
printf("slirp output:\n");
|
|
394 |
hex_dump(stdout, pkt, pkt_len);
|
|
395 |
#endif
|
|
396 |
if (!slirp_vc)
|
|
397 |
return;
|
|
398 |
qemu_send_packet(slirp_vc, pkt, pkt_len);
|
|
399 |
}
|
|
400 |
|
|
401 |
int slirp_is_inited(void)
|
|
402 |
{
|
|
403 |
return slirp_inited;
|
|
404 |
}
|
|
405 |
|
|
406 |
static void slirp_receive(void *opaque, const uint8_t *buf, int size)
|
|
407 |
{
|
|
408 |
#ifdef DEBUG_SLIRP
|
|
409 |
printf("slirp input:\n");
|
|
410 |
hex_dump(stdout, buf, size);
|
|
411 |
#endif
|
|
412 |
slirp_input(buf, size);
|
|
413 |
}
|
|
414 |
|
|
415 |
static int net_slirp_init(VLANState *vlan)
|
|
416 |
{
|
|
417 |
if (!slirp_inited) {
|
|
418 |
slirp_inited = 1;
|
|
419 |
slirp_init();
|
|
420 |
}
|
|
421 |
slirp_vc = qemu_new_vlan_client(vlan,
|
|
422 |
slirp_receive, NULL, NULL);
|
|
423 |
snprintf(slirp_vc->info_str, sizeof(slirp_vc->info_str), "user redirector");
|
|
424 |
return 0;
|
|
425 |
}
|
|
426 |
|
|
427 |
void net_slirp_redir(const char *redir_str)
|
|
428 |
{
|
|
429 |
int is_udp;
|
|
430 |
char buf[256], *r;
|
|
431 |
const char *p;
|
|
432 |
struct in_addr guest_addr;
|
|
433 |
int host_port, guest_port;
|
|
434 |
|
|
435 |
if (!slirp_inited) {
|
|
436 |
slirp_inited = 1;
|
|
437 |
slirp_init();
|
|
438 |
}
|
|
439 |
|
|
440 |
p = redir_str;
|
|
441 |
if (get_str_sep(buf, sizeof(buf), &p, ':') < 0)
|
|
442 |
goto fail;
|
|
443 |
if (!strcmp(buf, "tcp")) {
|
|
444 |
is_udp = 0;
|
|
445 |
} else if (!strcmp(buf, "udp")) {
|
|
446 |
is_udp = 1;
|
|
447 |
} else {
|
|
448 |
goto fail;
|
|
449 |
}
|
|
450 |
|
|
451 |
if (get_str_sep(buf, sizeof(buf), &p, ':') < 0)
|
|
452 |
goto fail;
|
|
453 |
host_port = strtol(buf, &r, 0);
|
|
454 |
if (r == buf)
|
|
455 |
goto fail;
|
|
456 |
|
|
457 |
if (get_str_sep(buf, sizeof(buf), &p, ':') < 0)
|
|
458 |
goto fail;
|
|
459 |
if (buf[0] == '\0') {
|
|
460 |
pstrcpy(buf, sizeof(buf), "10.0.2.15");
|
|
461 |
}
|
|
462 |
if (!inet_aton(buf, &guest_addr))
|
|
463 |
goto fail;
|
|
464 |
|
|
465 |
guest_port = strtol(p, &r, 0);
|
|
466 |
if (r == p)
|
|
467 |
goto fail;
|
|
468 |
|
|
469 |
if (slirp_redir(is_udp, host_port, guest_addr, guest_port) < 0) {
|
|
470 |
fprintf(stderr, "qemu: could not set up redirection\n");
|
|
471 |
exit(1);
|
|
472 |
}
|
|
473 |
return;
|
|
474 |
fail:
|
|
475 |
fprintf(stderr, "qemu: syntax: -redir [tcp|udp]:host-port:[guest-host]:guest-port\n");
|
|
476 |
exit(1);
|
|
477 |
}
|
|
478 |
|
|
479 |
#ifndef _WIN32
|
|
480 |
|
|
481 |
static char smb_dir[1024];
|
|
482 |
|
|
483 |
static void erase_dir(char *dir_name)
|
|
484 |
{
|
|
485 |
DIR *d;
|
|
486 |
struct dirent *de;
|
|
487 |
char filename[1024];
|
|
488 |
|
|
489 |
/* erase all the files in the directory */
|
|
490 |
if ((d = opendir(dir_name)) != 0) {
|
|
491 |
for(;;) {
|
|
492 |
de = readdir(d);
|
|
493 |
if (!de)
|
|
494 |
break;
|
|
495 |
if (strcmp(de->d_name, ".") != 0 &&
|
|
496 |
strcmp(de->d_name, "..") != 0) {
|
|
497 |
snprintf(filename, sizeof(filename), "%s/%s",
|
|
498 |
smb_dir, de->d_name);
|
|
499 |
if (unlink(filename) != 0) /* is it a directory? */
|
|
500 |
erase_dir(filename);
|
|
501 |
}
|
|
502 |
}
|
|
503 |
closedir(d);
|
|
504 |
rmdir(dir_name);
|
|
505 |
}
|
|
506 |
}
|
|
507 |
|
|
508 |
/* automatic user mode samba server configuration */
|
|
509 |
static void smb_exit(void)
|
|
510 |
{
|
|
511 |
erase_dir(smb_dir);
|
|
512 |
}
|
|
513 |
|
|
514 |
/* automatic user mode samba server configuration */
|
|
515 |
void net_slirp_smb(const char *exported_dir)
|
|
516 |
{
|
|
517 |
char smb_conf[1024];
|
|
518 |
char smb_cmdline[1024];
|
|
519 |
FILE *f;
|
|
520 |
|
|
521 |
if (!slirp_inited) {
|
|
522 |
slirp_inited = 1;
|
|
523 |
slirp_init();
|
|
524 |
}
|
|
525 |
|
|
526 |
/* XXX: better tmp dir construction */
|
|
527 |
snprintf(smb_dir, sizeof(smb_dir), "/tmp/qemu-smb.%d", getpid());
|
|
528 |
if (mkdir(smb_dir, 0700) < 0) {
|
|
529 |
fprintf(stderr, "qemu: could not create samba server dir '%s'\n", smb_dir);
|
|
530 |
exit(1);
|
|
531 |
}
|
|
532 |
snprintf(smb_conf, sizeof(smb_conf), "%s/%s", smb_dir, "smb.conf");
|
|
533 |
|
|
534 |
f = fopen(smb_conf, "w");
|
|
535 |
if (!f) {
|
|
536 |
fprintf(stderr, "qemu: could not create samba server configuration file '%s'\n", smb_conf);
|
|
537 |
exit(1);
|
|
538 |
}
|
|
539 |
fprintf(f,
|
|
540 |
"[global]\n"
|
|
541 |
"private dir=%s\n"
|
|
542 |
"smb ports=0\n"
|
|
543 |
"socket address=127.0.0.1\n"
|
|
544 |
"pid directory=%s\n"
|
|
545 |
"lock directory=%s\n"
|
|
546 |
"log file=%s/log.smbd\n"
|
|
547 |
"smb passwd file=%s/smbpasswd\n"
|
|
548 |
"security = share\n"
|
|
549 |
"[qemu]\n"
|
|
550 |
"path=%s\n"
|
|
551 |
"read only=no\n"
|
|
552 |
"guest ok=yes\n",
|
|
553 |
smb_dir,
|
|
554 |
smb_dir,
|
|
555 |
smb_dir,
|
|
556 |
smb_dir,
|
|
557 |
smb_dir,
|
|
558 |
exported_dir
|
|
559 |
);
|
|
560 |
fclose(f);
|
|
561 |
atexit(smb_exit);
|
|
562 |
|
|
563 |
snprintf(smb_cmdline, sizeof(smb_cmdline), "%s -s %s",
|
|
564 |
SMBD_COMMAND, smb_conf);
|
|
565 |
|
|
566 |
slirp_add_exec(0, smb_cmdline, 4, 139);
|
|
567 |
}
|
|
568 |
|
|
569 |
#endif /* !defined(_WIN32) */
|
|
570 |
void do_info_slirp(void)
|
|
571 |
{
|
|
572 |
slirp_stats();
|
|
573 |
}
|
|
574 |
|
|
575 |
#endif /* CONFIG_SLIRP */
|
|
576 |
|
|
577 |
#if !defined(_WIN32)
|
|
578 |
|
|
579 |
typedef struct TAPState {
|
|
580 |
VLANClientState *vc;
|
|
581 |
int fd;
|
|
582 |
char down_script[1024];
|
|
583 |
} TAPState;
|
|
584 |
|
|
585 |
static void tap_receive(void *opaque, const uint8_t *buf, int size)
|
|
586 |
{
|
|
587 |
TAPState *s = opaque;
|
|
588 |
int ret;
|
|
589 |
for(;;) {
|
|
590 |
ret = write(s->fd, buf, size);
|
|
591 |
if (ret < 0 && (errno == EINTR || errno == EAGAIN)) {
|
|
592 |
} else {
|
|
593 |
break;
|
|
594 |
}
|
|
595 |
}
|
|
596 |
}
|
|
597 |
|
|
598 |
static void tap_send(void *opaque)
|
|
599 |
{
|
|
600 |
TAPState *s = opaque;
|
|
601 |
uint8_t buf[4096];
|
|
602 |
int size;
|
|
603 |
|
|
604 |
#ifdef __sun__
|
|
605 |
struct strbuf sbuf;
|
|
606 |
int f = 0;
|
|
607 |
sbuf.maxlen = sizeof(buf);
|
|
608 |
sbuf.buf = buf;
|
|
609 |
size = getmsg(s->fd, NULL, &sbuf, &f) >=0 ? sbuf.len : -1;
|
|
610 |
#else
|
|
611 |
size = read(s->fd, buf, sizeof(buf));
|
|
612 |
#endif
|
|
613 |
if (size > 0) {
|
|
614 |
qemu_send_packet(s->vc, buf, size);
|
|
615 |
}
|
|
616 |
}
|
|
617 |
|
|
618 |
/* fd support */
|
|
619 |
|
|
620 |
static TAPState *net_tap_fd_init(VLANState *vlan, int fd)
|
|
621 |
{
|
|
622 |
TAPState *s;
|
|
623 |
|
|
624 |
s = qemu_mallocz(sizeof(TAPState));
|
|
625 |
if (!s)
|
|
626 |
return NULL;
|
|
627 |
s->fd = fd;
|
|
628 |
s->vc = qemu_new_vlan_client(vlan, tap_receive, NULL, s);
|
|
629 |
qemu_set_fd_handler(s->fd, tap_send, NULL, s);
|
|
630 |
snprintf(s->vc->info_str, sizeof(s->vc->info_str), "tap: fd=%d", fd);
|
|
631 |
return s;
|
|
632 |
}
|
|
633 |
|
|
634 |
#if defined (_BSD) || defined (__FreeBSD_kernel__)
|
|
635 |
static int tap_open(char *ifname, int ifname_size)
|
|
636 |
{
|
|
637 |
int fd;
|
|
638 |
char *dev;
|
|
639 |
struct stat s;
|
|
640 |
|
|
641 |
TFR(fd = open("/dev/tap", O_RDWR));
|
|
642 |
if (fd < 0) {
|
|
643 |
fprintf(stderr, "warning: could not open /dev/tap: no virtual network emulation\n");
|
|
644 |
return -1;
|
|
645 |
}
|
|
646 |
|
|
647 |
fstat(fd, &s);
|
|
648 |
dev = devname(s.st_rdev, S_IFCHR);
|
|
649 |
pstrcpy(ifname, ifname_size, dev);
|
|
650 |
|
|
651 |
fcntl(fd, F_SETFL, O_NONBLOCK);
|
|
652 |
return fd;
|
|
653 |
}
|
|
654 |
#elif defined(__sun__)
|
|
655 |
#define TUNNEWPPA (('T'<<16) | 0x0001)
|
|
656 |
/*
|
|
657 |
* Allocate TAP device, returns opened fd.
|
|
658 |
* Stores dev name in the first arg(must be large enough).
|
|
659 |
*/
|
|
660 |
int tap_alloc(char *dev, size_t dev_size)
|
|
661 |
{
|
|
662 |
int tap_fd, if_fd, ppa = -1;
|
|
663 |
static int ip_fd = 0;
|
|
664 |
char *ptr;
|
|
665 |
|
|
666 |
static int arp_fd = 0;
|
|
667 |
int ip_muxid, arp_muxid;
|
|
668 |
struct strioctl strioc_if, strioc_ppa;
|
|
669 |
int link_type = I_PLINK;;
|
|
670 |
struct lifreq ifr;
|
|
671 |
char actual_name[32] = "";
|
|
672 |
|
|
673 |
memset(&ifr, 0x0, sizeof(ifr));
|
|
674 |
|
|
675 |
if( *dev ){
|
|
676 |
ptr = dev;
|
|
677 |
while( *ptr && !isdigit((int)*ptr) ) ptr++;
|
|
678 |
ppa = atoi(ptr);
|
|
679 |
}
|
|
680 |
|
|
681 |
/* Check if IP device was opened */
|
|
682 |
if( ip_fd )
|
|
683 |
close(ip_fd);
|
|
684 |
|
|
685 |
TFR(ip_fd = open("/dev/udp", O_RDWR, 0));
|
|
686 |
if (ip_fd < 0) {
|
|
687 |
syslog(LOG_ERR, "Can't open /dev/ip (actually /dev/udp)");
|
|
688 |
return -1;
|
|
689 |
}
|
|
690 |
|
|
691 |
TFR(tap_fd = open("/dev/tap", O_RDWR, 0));
|
|
692 |
if (tap_fd < 0) {
|
|
693 |
syslog(LOG_ERR, "Can't open /dev/tap");
|
|
694 |
return -1;
|
|
695 |
}
|
|
696 |
|
|
697 |
/* Assign a new PPA and get its unit number. */
|
|
698 |
strioc_ppa.ic_cmd = TUNNEWPPA;
|
|
699 |
strioc_ppa.ic_timout = 0;
|
|
700 |
strioc_ppa.ic_len = sizeof(ppa);
|
|
701 |
strioc_ppa.ic_dp = (char *)&ppa;
|
|
702 |
if ((ppa = ioctl (tap_fd, I_STR, &strioc_ppa)) < 0)
|
|
703 |
syslog (LOG_ERR, "Can't assign new interface");
|
|
704 |
|
|
705 |
TFR(if_fd = open("/dev/tap", O_RDWR, 0));
|
|
706 |
if (if_fd < 0) {
|
|
707 |
syslog(LOG_ERR, "Can't open /dev/tap (2)");
|
|
708 |
return -1;
|
|
709 |
}
|
|
710 |
if(ioctl(if_fd, I_PUSH, "ip") < 0){
|
|
711 |
syslog(LOG_ERR, "Can't push IP module");
|
|
712 |
return -1;
|
|
713 |
}
|
|
714 |
|
|
715 |
if (ioctl(if_fd, SIOCGLIFFLAGS, &ifr) < 0)
|
|
716 |
syslog(LOG_ERR, "Can't get flags\n");
|
|
717 |
|
|
718 |
snprintf (actual_name, 32, "tap%d", ppa);
|
|
719 |
pstrcpy(ifr.lifr_name, sizeof(ifr.lifr_name), actual_name);
|
|
720 |
|
|
721 |
ifr.lifr_ppa = ppa;
|
|
722 |
/* Assign ppa according to the unit number returned by tun device */
|
|
723 |
|
|
724 |
if (ioctl (if_fd, SIOCSLIFNAME, &ifr) < 0)
|
|
725 |
syslog (LOG_ERR, "Can't set PPA %d", ppa);
|
|
726 |
if (ioctl(if_fd, SIOCGLIFFLAGS, &ifr) <0)
|
|
727 |
syslog (LOG_ERR, "Can't get flags\n");
|
|
728 |
/* Push arp module to if_fd */
|
|
729 |
if (ioctl (if_fd, I_PUSH, "arp") < 0)
|
|
730 |
syslog (LOG_ERR, "Can't push ARP module (2)");
|
|
731 |
|
|
732 |
/* Push arp module to ip_fd */
|
|
733 |
if (ioctl (ip_fd, I_POP, NULL) < 0)
|
|
734 |
syslog (LOG_ERR, "I_POP failed\n");
|
|
735 |
if (ioctl (ip_fd, I_PUSH, "arp") < 0)
|
|
736 |
syslog (LOG_ERR, "Can't push ARP module (3)\n");
|
|
737 |
/* Open arp_fd */
|
|
738 |
TFR(arp_fd = open ("/dev/tap", O_RDWR, 0));
|
|
739 |
if (arp_fd < 0)
|
|
740 |
syslog (LOG_ERR, "Can't open %s\n", "/dev/tap");
|
|
741 |
|
|
742 |
/* Set ifname to arp */
|
|
743 |
strioc_if.ic_cmd = SIOCSLIFNAME;
|
|
744 |
strioc_if.ic_timout = 0;
|
|
745 |
strioc_if.ic_len = sizeof(ifr);
|
|
746 |
strioc_if.ic_dp = (char *)𝔦
|
|
747 |
if (ioctl(arp_fd, I_STR, &strioc_if) < 0){
|
|
748 |
syslog (LOG_ERR, "Can't set ifname to arp\n");
|
|
749 |
}
|
|
750 |
|
|
751 |
if((ip_muxid = ioctl(ip_fd, I_LINK, if_fd)) < 0){
|
|
752 |
syslog(LOG_ERR, "Can't link TAP device to IP");
|
|
753 |
return -1;
|
|
754 |
}
|
|
755 |
|
|
756 |
if ((arp_muxid = ioctl (ip_fd, link_type, arp_fd)) < 0)
|
|
757 |
syslog (LOG_ERR, "Can't link TAP device to ARP");
|
|
758 |
|
|
759 |
close (if_fd);
|
|
760 |
|
|
761 |
memset(&ifr, 0x0, sizeof(ifr));
|
|
762 |
pstrcpy(ifr.lifr_name, sizeof(ifr.lifr_name), actual_name);
|
|
763 |
ifr.lifr_ip_muxid = ip_muxid;
|
|
764 |
ifr.lifr_arp_muxid = arp_muxid;
|
|
765 |
|
|
766 |
if (ioctl (ip_fd, SIOCSLIFMUXID, &ifr) < 0)
|
|
767 |
{
|
|
768 |
ioctl (ip_fd, I_PUNLINK , arp_muxid);
|
|
769 |
ioctl (ip_fd, I_PUNLINK, ip_muxid);
|
|
770 |
syslog (LOG_ERR, "Can't set multiplexor id");
|
|
771 |
}
|
|
772 |
|
|
773 |
snprintf(dev, dev_size, "tap%d", ppa);
|
|
774 |
return tap_fd;
|
|
775 |
}
|
|
776 |
|
|
777 |
static int tap_open(char *ifname, int ifname_size)
|
|
778 |
{
|
|
779 |
char dev[10]="";
|
|
780 |
int fd;
|
|
781 |
if( (fd = tap_alloc(dev, sizeof(dev))) < 0 ){
|
|
782 |
fprintf(stderr, "Cannot allocate TAP device\n");
|
|
783 |
return -1;
|
|
784 |
}
|
|
785 |
pstrcpy(ifname, ifname_size, dev);
|
|
786 |
fcntl(fd, F_SETFL, O_NONBLOCK);
|
|
787 |
return fd;
|
|
788 |
}
|
|
789 |
#else
|
|
790 |
static int tap_open(char *ifname, int ifname_size)
|
|
791 |
{
|
|
792 |
struct ifreq ifr;
|
|
793 |
int fd, ret;
|
|
794 |
|
|
795 |
TFR(fd = open("/dev/net/tun", O_RDWR));
|
|
796 |
if (fd < 0) {
|
|
797 |
fprintf(stderr, "warning: could not open /dev/net/tun: no virtual network emulation\n");
|
|
798 |
return -1;
|
|
799 |
}
|
|
800 |
memset(&ifr, 0, sizeof(ifr));
|
|
801 |
ifr.ifr_flags = IFF_TAP | IFF_NO_PI;
|
|
802 |
if (ifname[0] != '\0')
|
|
803 |
pstrcpy(ifr.ifr_name, IFNAMSIZ, ifname);
|
|
804 |
else
|
|
805 |
pstrcpy(ifr.ifr_name, IFNAMSIZ, "tap%d");
|
|
806 |
ret = ioctl(fd, TUNSETIFF, (void *) &ifr);
|
|
807 |
if (ret != 0) {
|
|
808 |
fprintf(stderr, "warning: could not configure /dev/net/tun: no virtual network emulation\n");
|
|
809 |
close(fd);
|
|
810 |
return -1;
|
|
811 |
}
|
|
812 |
pstrcpy(ifname, ifname_size, ifr.ifr_name);
|
|
813 |
fcntl(fd, F_SETFL, O_NONBLOCK);
|
|
814 |
return fd;
|
|
815 |
}
|
|
816 |
#endif
|
|
817 |
|
|
818 |
static int launch_script(const char *setup_script, const char *ifname, int fd)
|
|
819 |
{
|
|
820 |
int pid, status;
|
|
821 |
char *args[3];
|
|
822 |
char **parg;
|
|
823 |
|
|
824 |
/* try to launch network script */
|
|
825 |
pid = fork();
|
|
826 |
if (pid >= 0) {
|
|
827 |
if (pid == 0) {
|
|
828 |
int open_max = sysconf (_SC_OPEN_MAX), i;
|
|
829 |
for (i = 0; i < open_max; i++)
|
|
830 |
if (i != STDIN_FILENO &&
|
|
831 |
i != STDOUT_FILENO &&
|
|
832 |
i != STDERR_FILENO &&
|
|
833 |
i != fd)
|
|
834 |
close(i);
|
|
835 |
|
|
836 |
parg = args;
|
|
837 |
*parg++ = (char *)setup_script;
|
|
838 |
*parg++ = (char *)ifname;
|
|
839 |
*parg++ = NULL;
|
|
840 |
execv(setup_script, args);
|
|
841 |
_exit(1);
|
|
842 |
}
|
|
843 |
while (waitpid(pid, &status, 0) != pid);
|
|
844 |
if (!WIFEXITED(status) ||
|
|
845 |
WEXITSTATUS(status) != 0) {
|
|
846 |
fprintf(stderr, "%s: could not launch network script\n",
|
|
847 |
setup_script);
|
|
848 |
return -1;
|
|
849 |
}
|
|
850 |
}
|
|
851 |
return 0;
|
|
852 |
}
|
|
853 |
|
|
854 |
static int net_tap_init(VLANState *vlan, const char *ifname1,
|
|
855 |
const char *setup_script, const char *down_script)
|
|
856 |
{
|
|
857 |
TAPState *s;
|
|
858 |
int fd;
|
|
859 |
char ifname[128];
|
|
860 |
|
|
861 |
if (ifname1 != NULL)
|
|
862 |
pstrcpy(ifname, sizeof(ifname), ifname1);
|
|
863 |
else
|
|
864 |
ifname[0] = '\0';
|
|
865 |
TFR(fd = tap_open(ifname, sizeof(ifname)));
|
|
866 |
if (fd < 0)
|
|
867 |
return -1;
|
|
868 |
|
|
869 |
if (!setup_script || !strcmp(setup_script, "no"))
|
|
870 |
setup_script = "";
|
|
871 |
if (setup_script[0] != '\0') {
|
|
872 |
if (launch_script(setup_script, ifname, fd))
|
|
873 |
return -1;
|
|
874 |
}
|
|
875 |
s = net_tap_fd_init(vlan, fd);
|
|
876 |
if (!s)
|
|
877 |
return -1;
|
|
878 |
snprintf(s->vc->info_str, sizeof(s->vc->info_str),
|
|
879 |
"tap: ifname=%s setup_script=%s", ifname, setup_script);
|
|
880 |
if (down_script && strcmp(down_script, "no"))
|
|
881 |
snprintf(s->down_script, sizeof(s->down_script), "%s", down_script);
|
|
882 |
return 0;
|
|
883 |
}
|
|
884 |
|
|
885 |
#endif /* !_WIN32 */
|
|
886 |
|
|
887 |
#if defined(CONFIG_VDE)
|
|
888 |
typedef struct VDEState {
|
|
889 |
VLANClientState *vc;
|
|
890 |
VDECONN *vde;
|
|
891 |
} VDEState;
|
|
892 |
|
|
893 |
static void vde_to_qemu(void *opaque)
|
|
894 |
{
|
|
895 |
VDEState *s = opaque;
|
|
896 |
uint8_t buf[4096];
|
|
897 |
int size;
|
|
898 |
|
|
899 |
size = vde_recv(s->vde, buf, sizeof(buf), 0);
|
|
900 |
if (size > 0) {
|
|
901 |
qemu_send_packet(s->vc, buf, size);
|
|
902 |
}
|
|
903 |
}
|
|
904 |
|
|
905 |
static void vde_from_qemu(void *opaque, const uint8_t *buf, int size)
|
|
906 |
{
|
|
907 |
VDEState *s = opaque;
|
|
908 |
int ret;
|
|
909 |
for(;;) {
|
|
910 |
ret = vde_send(s->vde, buf, size, 0);
|
|
911 |
if (ret < 0 && errno == EINTR) {
|
|
912 |
} else {
|
|
913 |
break;
|
|
914 |
}
|
|
915 |
}
|
|
916 |
}
|
|
917 |
|
|
918 |
static int net_vde_init(VLANState *vlan, const char *sock, int port,
|
|
919 |
const char *group, int mode)
|
|
920 |
{
|
|
921 |
VDEState *s;
|
|
922 |
char *init_group = strlen(group) ? (char *)group : NULL;
|
|
923 |
char *init_sock = strlen(sock) ? (char *)sock : NULL;
|
|
924 |
|
|
925 |
struct vde_open_args args = {
|
|
926 |
.port = port,
|
|
927 |
.group = init_group,
|
|
928 |
.mode = mode,
|
|
929 |
};
|
|
930 |
|
|
931 |
s = qemu_mallocz(sizeof(VDEState));
|
|
932 |
if (!s)
|
|
933 |
return -1;
|
|
934 |
s->vde = vde_open(init_sock, "QEMU", &args);
|
|
935 |
if (!s->vde){
|
|
936 |
free(s);
|
|
937 |
return -1;
|
|
938 |
}
|
|
939 |
s->vc = qemu_new_vlan_client(vlan, vde_from_qemu, NULL, s);
|
|
940 |
qemu_set_fd_handler(vde_datafd(s->vde), vde_to_qemu, NULL, s);
|
|
941 |
snprintf(s->vc->info_str, sizeof(s->vc->info_str), "vde: sock=%s fd=%d",
|
|
942 |
sock, vde_datafd(s->vde));
|
|
943 |
return 0;
|
|
944 |
}
|
|
945 |
#endif
|
|
946 |
|
|
947 |
/* network connection */
|
|
948 |
typedef struct NetSocketState {
|
|
949 |
VLANClientState *vc;
|
|
950 |
int fd;
|
|
951 |
int state; /* 0 = getting length, 1 = getting data */
|
|
952 |
int index;
|
|
953 |
int packet_len;
|
|
954 |
uint8_t buf[4096];
|
|
955 |
struct sockaddr_in dgram_dst; /* contains inet host and port destination iff connectionless (SOCK_DGRAM) */
|
|
956 |
} NetSocketState;
|
|
957 |
|
|
958 |
typedef struct NetSocketListenState {
|
|
959 |
VLANState *vlan;
|
|
960 |
int fd;
|
|
961 |
} NetSocketListenState;
|
|
962 |
|
|
963 |
/* XXX: we consider we can send the whole packet without blocking */
|
|
964 |
static void net_socket_receive(void *opaque, const uint8_t *buf, int size)
|
|
965 |
{
|
|
966 |
NetSocketState *s = opaque;
|
|
967 |
uint32_t len;
|
|
968 |
len = htonl(size);
|
|
969 |
|
|
970 |
send_all(s->fd, (const uint8_t *)&len, sizeof(len));
|
|
971 |
send_all(s->fd, buf, size);
|
|
972 |
}
|
|
973 |
|
|
974 |
static void net_socket_receive_dgram(void *opaque, const uint8_t *buf, int size)
|
|
975 |
{
|
|
976 |
NetSocketState *s = opaque;
|
|
977 |
sendto(s->fd, buf, size, 0,
|
|
978 |
(struct sockaddr *)&s->dgram_dst, sizeof(s->dgram_dst));
|
|
979 |
}
|
|
980 |
|
|
981 |
static void net_socket_send(void *opaque)
|
|
982 |
{
|
|
983 |
NetSocketState *s = opaque;
|
|
984 |
int l, size, err;
|
|
985 |
uint8_t buf1[4096];
|
|
986 |
const uint8_t *buf;
|
|
987 |
|
|
988 |
size = recv(s->fd, buf1, sizeof(buf1), 0);
|
|
989 |
if (size < 0) {
|
|
990 |
err = socket_error();
|
|
991 |
if (err != EWOULDBLOCK)
|
|
992 |
goto eoc;
|
|
993 |
} else if (size == 0) {
|
|
994 |
/* end of connection */
|
|
995 |
eoc:
|
|
996 |
qemu_set_fd_handler(s->fd, NULL, NULL, NULL);
|
|
997 |
closesocket(s->fd);
|
|
998 |
return;
|
|
999 |
}
|
|
1000 |
buf = buf1;
|
|
1001 |
while (size > 0) {
|
|
1002 |
/* reassemble a packet from the network */
|
|
1003 |
switch(s->state) {
|
|
1004 |
case 0:
|
|
1005 |
l = 4 - s->index;
|
|
1006 |
if (l > size)
|
|
1007 |
l = size;
|
|
1008 |
memcpy(s->buf + s->index, buf, l);
|
|
1009 |
buf += l;
|
|
1010 |
size -= l;
|
|
1011 |
s->index += l;
|
|
1012 |
if (s->index == 4) {
|
|
1013 |
/* got length */
|
|
1014 |
s->packet_len = ntohl(*(uint32_t *)s->buf);
|
|
1015 |
s->index = 0;
|
|
1016 |
s->state = 1;
|
|
1017 |
}
|
|
1018 |
break;
|
|
1019 |
case 1:
|
|
1020 |
l = s->packet_len - s->index;
|
|
1021 |
if (l > size)
|
|
1022 |
l = size;
|
|
1023 |
memcpy(s->buf + s->index, buf, l);
|
|
1024 |
s->index += l;
|
|
1025 |
buf += l;
|
|
1026 |
size -= l;
|
|
1027 |
if (s->index >= s->packet_len) {
|
|
1028 |
qemu_send_packet(s->vc, s->buf, s->packet_len);
|
|
1029 |
s->index = 0;
|
|
1030 |
s->state = 0;
|
|
1031 |
}
|
|
1032 |
break;
|
|
1033 |
}
|
|
1034 |
}
|
|
1035 |
}
|
|
1036 |
|
|
1037 |
static void net_socket_send_dgram(void *opaque)
|
|
1038 |
{
|
|
1039 |
NetSocketState *s = opaque;
|
|
1040 |
int size;
|
|
1041 |
|
|
1042 |
size = recv(s->fd, s->buf, sizeof(s->buf), 0);
|
|
1043 |
if (size < 0)
|
|
1044 |
return;
|
|
1045 |
if (size == 0) {
|
|
1046 |
/* end of connection */
|
|
1047 |
qemu_set_fd_handler(s->fd, NULL, NULL, NULL);
|
|
1048 |
return;
|
|
1049 |
}
|
|
1050 |
qemu_send_packet(s->vc, s->buf, size);
|
|
1051 |
}
|
|
1052 |
|
|
1053 |
static int net_socket_mcast_create(struct sockaddr_in *mcastaddr)
|
|
1054 |
{
|
|
1055 |
struct ip_mreq imr;
|
|
1056 |
int fd;
|
|
1057 |
int val, ret;
|
|
1058 |
if (!IN_MULTICAST(ntohl(mcastaddr->sin_addr.s_addr))) {
|
|
1059 |
fprintf(stderr, "qemu: error: specified mcastaddr \"%s\" (0x%08x) does not contain a multicast address\n",
|
|
1060 |
inet_ntoa(mcastaddr->sin_addr),
|
|
1061 |
(int)ntohl(mcastaddr->sin_addr.s_addr));
|
|
1062 |
return -1;
|
|
1063 |
|
|
1064 |
}
|
|
1065 |
fd = socket(PF_INET, SOCK_DGRAM, 0);
|
|
1066 |
if (fd < 0) {
|
|
1067 |
perror("socket(PF_INET, SOCK_DGRAM)");
|
|
1068 |
return -1;
|
|
1069 |
}
|
|
1070 |
|
|
1071 |
val = 1;
|
|
1072 |
ret=setsockopt(fd, SOL_SOCKET, SO_REUSEADDR,
|
|
1073 |
(const char *)&val, sizeof(val));
|
|
1074 |
if (ret < 0) {
|
|
1075 |
perror("setsockopt(SOL_SOCKET, SO_REUSEADDR)");
|
|
1076 |
goto fail;
|
|
1077 |
}
|
|
1078 |
|
|
1079 |
ret = bind(fd, (struct sockaddr *)mcastaddr, sizeof(*mcastaddr));
|
|
1080 |
if (ret < 0) {
|
|
1081 |
perror("bind");
|
|
1082 |
goto fail;
|
|
1083 |
}
|
|
1084 |
|
|
1085 |
/* Add host to multicast group */
|
|
1086 |
imr.imr_multiaddr = mcastaddr->sin_addr;
|
|
1087 |
imr.imr_interface.s_addr = htonl(INADDR_ANY);
|
|
1088 |
|
|
1089 |
ret = setsockopt(fd, IPPROTO_IP, IP_ADD_MEMBERSHIP,
|
|
1090 |
(const char *)&imr, sizeof(struct ip_mreq));
|
|
1091 |
if (ret < 0) {
|
|
1092 |
perror("setsockopt(IP_ADD_MEMBERSHIP)");
|
|
1093 |
goto fail;
|
|
1094 |
}
|
|
1095 |
|
|
1096 |
/* Force mcast msgs to loopback (eg. several QEMUs in same host */
|
|
1097 |
val = 1;
|
|
1098 |
ret=setsockopt(fd, IPPROTO_IP, IP_MULTICAST_LOOP,
|
|
1099 |
(const char *)&val, sizeof(val));
|
|
1100 |
if (ret < 0) {
|
|
1101 |
perror("setsockopt(SOL_IP, IP_MULTICAST_LOOP)");
|
|
1102 |
goto fail;
|
|
1103 |
}
|
|
1104 |
|
|
1105 |
socket_set_nonblock(fd);
|
|
1106 |
return fd;
|
|
1107 |
fail:
|
|
1108 |
if (fd >= 0)
|
|
1109 |
closesocket(fd);
|
|
1110 |
return -1;
|
|
1111 |
}
|
|
1112 |
|
|
1113 |
static NetSocketState *net_socket_fd_init_dgram(VLANState *vlan, int fd,
|
|
1114 |
int is_connected)
|
|
1115 |
{
|
|
1116 |
struct sockaddr_in saddr;
|
|
1117 |
int newfd;
|
|
1118 |
socklen_t saddr_len;
|
|
1119 |
NetSocketState *s;
|
|
1120 |
|
|
1121 |
/* fd passed: multicast: "learn" dgram_dst address from bound address and save it
|
|
1122 |
* Because this may be "shared" socket from a "master" process, datagrams would be recv()
|
|
1123 |
* by ONLY ONE process: we must "clone" this dgram socket --jjo
|
|
1124 |
*/
|
|
1125 |
|
|
1126 |
if (is_connected) {
|
|
1127 |
if (getsockname(fd, (struct sockaddr *) &saddr, &saddr_len) == 0) {
|
|
1128 |
/* must be bound */
|
|
1129 |
if (saddr.sin_addr.s_addr==0) {
|
|
1130 |
fprintf(stderr, "qemu: error: init_dgram: fd=%d unbound, cannot setup multicast dst addr\n",
|
|
1131 |
fd);
|
|
1132 |
return NULL;
|
|
1133 |
}
|
|
1134 |
/* clone dgram socket */
|
|
1135 |
newfd = net_socket_mcast_create(&saddr);
|
|
1136 |
if (newfd < 0) {
|
|
1137 |
/* error already reported by net_socket_mcast_create() */
|
|
1138 |
close(fd);
|
|
1139 |
return NULL;
|
|
1140 |
}
|
|
1141 |
/* clone newfd to fd, close newfd */
|
|
1142 |
dup2(newfd, fd);
|
|
1143 |
close(newfd);
|
|
1144 |
|
|
1145 |
} else {
|
|
1146 |
fprintf(stderr, "qemu: error: init_dgram: fd=%d failed getsockname(): %s\n",
|
|
1147 |
fd, strerror(errno));
|
|
1148 |
return NULL;
|
|
1149 |
}
|
|
1150 |
}
|
|
1151 |
|
|
1152 |
s = qemu_mallocz(sizeof(NetSocketState));
|
|
1153 |
if (!s)
|
|
1154 |
return NULL;
|
|
1155 |
s->fd = fd;
|
|
1156 |
|
|
1157 |
s->vc = qemu_new_vlan_client(vlan, net_socket_receive_dgram, NULL, s);
|
|
1158 |
qemu_set_fd_handler(s->fd, net_socket_send_dgram, NULL, s);
|
|
1159 |
|
|
1160 |
/* mcast: save bound address as dst */
|
|
1161 |
if (is_connected) s->dgram_dst=saddr;
|
|
1162 |
|
|
1163 |
snprintf(s->vc->info_str, sizeof(s->vc->info_str),
|
|
1164 |
"socket: fd=%d (%s mcast=%s:%d)",
|
|
1165 |
fd, is_connected? "cloned" : "",
|
|
1166 |
inet_ntoa(saddr.sin_addr), ntohs(saddr.sin_port));
|
|
1167 |
return s;
|
|
1168 |
}
|
|
1169 |
|
|
1170 |
static void net_socket_connect(void *opaque)
|
|
1171 |
{
|
|
1172 |
NetSocketState *s = opaque;
|
|
1173 |
qemu_set_fd_handler(s->fd, net_socket_send, NULL, s);
|
|
1174 |
}
|
|
1175 |
|
|
1176 |
static NetSocketState *net_socket_fd_init_stream(VLANState *vlan, int fd,
|
|
1177 |
int is_connected)
|
|
1178 |
{
|
|
1179 |
NetSocketState *s;
|
|
1180 |
s = qemu_mallocz(sizeof(NetSocketState));
|
|
1181 |
if (!s)
|
|
1182 |
return NULL;
|
|
1183 |
s->fd = fd;
|
|
1184 |
s->vc = qemu_new_vlan_client(vlan,
|
|
1185 |
net_socket_receive, NULL, s);
|
|
1186 |
snprintf(s->vc->info_str, sizeof(s->vc->info_str),
|
|
1187 |
"socket: fd=%d", fd);
|
|
1188 |
if (is_connected) {
|
|
1189 |
net_socket_connect(s);
|
|
1190 |
} else {
|
|
1191 |
qemu_set_fd_handler(s->fd, NULL, net_socket_connect, s);
|
|
1192 |
}
|
|
1193 |
return s;
|
|
1194 |
}
|
|
1195 |
|
|
1196 |
static NetSocketState *net_socket_fd_init(VLANState *vlan, int fd,
|
|
1197 |
int is_connected)
|
|
1198 |
{
|
|
1199 |
int so_type=-1, optlen=sizeof(so_type);
|
|
1200 |
|
|
1201 |
if(getsockopt(fd, SOL_SOCKET, SO_TYPE, (char *)&so_type,
|
|
1202 |
(socklen_t *)&optlen)< 0) {
|
|
1203 |
fprintf(stderr, "qemu: error: getsockopt(SO_TYPE) for fd=%d failed\n", fd);
|
|
1204 |
return NULL;
|
|
1205 |
}
|
|
1206 |
switch(so_type) {
|
|
1207 |
case SOCK_DGRAM:
|
|
1208 |
return net_socket_fd_init_dgram(vlan, fd, is_connected);
|
|
1209 |
case SOCK_STREAM:
|
|
1210 |
return net_socket_fd_init_stream(vlan, fd, is_connected);
|
|
1211 |
default:
|
|
1212 |
/* who knows ... this could be a eg. a pty, do warn and continue as stream */
|
|
1213 |
fprintf(stderr, "qemu: warning: socket type=%d for fd=%d is not SOCK_DGRAM or SOCK_STREAM\n", so_type, fd);
|
|
1214 |
return net_socket_fd_init_stream(vlan, fd, is_connected);
|
|
1215 |
}
|
|
1216 |
return NULL;
|
|
1217 |
}
|
|
1218 |
|
|
1219 |
static void net_socket_accept(void *opaque)
|
|
1220 |
{
|
|
1221 |
NetSocketListenState *s = opaque;
|
|
1222 |
NetSocketState *s1;
|
|
1223 |
struct sockaddr_in saddr;
|
|
1224 |
socklen_t len;
|
|
1225 |
int fd;
|
|
1226 |
|
|
1227 |
for(;;) {
|
|
1228 |
len = sizeof(saddr);
|
|
1229 |
fd = accept(s->fd, (struct sockaddr *)&saddr, &len);
|
|
1230 |
if (fd < 0 && errno != EINTR) {
|
|
1231 |
return;
|
|
1232 |
} else if (fd >= 0) {
|
|
1233 |
break;
|
|
1234 |
}
|
|
1235 |
}
|
|
1236 |
s1 = net_socket_fd_init(s->vlan, fd, 1);
|
|
1237 |
if (!s1) {
|
|
1238 |
closesocket(fd);
|
|
1239 |
} else {
|
|
1240 |
snprintf(s1->vc->info_str, sizeof(s1->vc->info_str),
|
|
1241 |
"socket: connection from %s:%d",
|
|
1242 |
inet_ntoa(saddr.sin_addr), ntohs(saddr.sin_port));
|
|
1243 |
}
|
|
1244 |
}
|
|
1245 |
|
|
1246 |
static int net_socket_listen_init(VLANState *vlan, const char *host_str)
|
|
1247 |
{
|
|
1248 |
NetSocketListenState *s;
|
|
1249 |
int fd, val, ret;
|
|
1250 |
struct sockaddr_in saddr;
|
|
1251 |
|
|
1252 |
if (parse_host_port(&saddr, host_str) < 0)
|
|
1253 |
return -1;
|
|
1254 |
|
|
1255 |
s = qemu_mallocz(sizeof(NetSocketListenState));
|
|
1256 |
if (!s)
|
|
1257 |
return -1;
|
|
1258 |
|
|
1259 |
fd = socket(PF_INET, SOCK_STREAM, 0);
|
|
1260 |
if (fd < 0) {
|
|
1261 |
perror("socket");
|
|
1262 |
return -1;
|
|
1263 |
}
|
|
1264 |
socket_set_nonblock(fd);
|
|
1265 |
|
|
1266 |
/* allow fast reuse */
|
|
1267 |
val = 1;
|
|
1268 |
setsockopt(fd, SOL_SOCKET, SO_REUSEADDR, (const char *)&val, sizeof(val));
|
|
1269 |
|
|
1270 |
ret = bind(fd, (struct sockaddr *)&saddr, sizeof(saddr));
|
|
1271 |
if (ret < 0) {
|
|
1272 |
perror("bind");
|
|
1273 |
return -1;
|
|
1274 |
}
|
|
1275 |
ret = listen(fd, 0);
|
|
1276 |
if (ret < 0) {
|
|
1277 |
perror("listen");
|
|
1278 |
return -1;
|
|
1279 |
}
|
|
1280 |
s->vlan = vlan;
|
|
1281 |
s->fd = fd;
|
|
1282 |
qemu_set_fd_handler(fd, net_socket_accept, NULL, s);
|
|
1283 |
return 0;
|
|
1284 |
}
|
|
1285 |
|
|
1286 |
static int net_socket_connect_init(VLANState *vlan, const char *host_str)
|
|
1287 |
{
|
|
1288 |
NetSocketState *s;
|
|
1289 |
int fd, connected, ret, err;
|
|
1290 |
struct sockaddr_in saddr;
|
|
1291 |
|
|
1292 |
if (parse_host_port(&saddr, host_str) < 0)
|
|
1293 |
return -1;
|
|
1294 |
|
|
1295 |
fd = socket(PF_INET, SOCK_STREAM, 0);
|
|
1296 |
if (fd < 0) {
|
|
1297 |
perror("socket");
|
|
1298 |
return -1;
|
|
1299 |
}
|
|
1300 |
socket_set_nonblock(fd);
|
|
1301 |
|
|
1302 |
connected = 0;
|
|
1303 |
for(;;) {
|
|
1304 |
ret = connect(fd, (struct sockaddr *)&saddr, sizeof(saddr));
|
|
1305 |
if (ret < 0) {
|
|
1306 |
err = socket_error();
|
|
1307 |
if (err == EINTR || err == EWOULDBLOCK) {
|
|
1308 |
} else if (err == EINPROGRESS) {
|
|
1309 |
break;
|
|
1310 |
#ifdef _WIN32
|
|
1311 |
} else if (err == WSAEALREADY) {
|
|
1312 |
break;
|
|
1313 |
#endif
|
|
1314 |
} else {
|
|
1315 |
perror("connect");
|
|
1316 |
closesocket(fd);
|
|
1317 |
return -1;
|
|
1318 |
}
|
|
1319 |
} else {
|
|
1320 |
connected = 1;
|
|
1321 |
break;
|
|
1322 |
}
|
|
1323 |
}
|
|
1324 |
s = net_socket_fd_init(vlan, fd, connected);
|
|
1325 |
if (!s)
|
|
1326 |
return -1;
|
|
1327 |
snprintf(s->vc->info_str, sizeof(s->vc->info_str),
|
|
1328 |
"socket: connect to %s:%d",
|
|
1329 |
inet_ntoa(saddr.sin_addr), ntohs(saddr.sin_port));
|
|
1330 |
return 0;
|
|
1331 |
}
|
|
1332 |
|
|
1333 |
static int net_socket_mcast_init(VLANState *vlan, const char *host_str)
|
|
1334 |
{
|
|
1335 |
NetSocketState *s;
|
|
1336 |
int fd;
|
|
1337 |
struct sockaddr_in saddr;
|
|
1338 |
|
|
1339 |
if (parse_host_port(&saddr, host_str) < 0)
|
|
1340 |
return -1;
|
|
1341 |
|
|
1342 |
|
|
1343 |
fd = net_socket_mcast_create(&saddr);
|
|
1344 |
if (fd < 0)
|
|
1345 |
return -1;
|
|
1346 |
|
|
1347 |
s = net_socket_fd_init(vlan, fd, 0);
|
|
1348 |
if (!s)
|
|
1349 |
return -1;
|
|
1350 |
|
|
1351 |
s->dgram_dst = saddr;
|
|
1352 |
|
|
1353 |
snprintf(s->vc->info_str, sizeof(s->vc->info_str),
|
|
1354 |
"socket: mcast=%s:%d",
|
|
1355 |
inet_ntoa(saddr.sin_addr), ntohs(saddr.sin_port));
|
|
1356 |
return 0;
|
|
1357 |
|
|
1358 |
}
|
|
1359 |
|
|
1360 |
/* find or alloc a new VLAN */
|
|
1361 |
VLANState *qemu_find_vlan(int id)
|
|
1362 |
{
|
|
1363 |
VLANState **pvlan, *vlan;
|
|
1364 |
for(vlan = first_vlan; vlan != NULL; vlan = vlan->next) {
|
|
1365 |
if (vlan->id == id)
|
|
1366 |
return vlan;
|
|
1367 |
}
|
|
1368 |
vlan = qemu_mallocz(sizeof(VLANState));
|
|
1369 |
if (!vlan)
|
|
1370 |
return NULL;
|
|
1371 |
vlan->id = id;
|
|
1372 |
vlan->next = NULL;
|
|
1373 |
pvlan = &first_vlan;
|
|
1374 |
while (*pvlan != NULL)
|
|
1375 |
pvlan = &(*pvlan)->next;
|
|
1376 |
*pvlan = vlan;
|
|
1377 |
return vlan;
|
|
1378 |
}
|
|
1379 |
|
|
1380 |
int net_client_init(const char *device, const char *p)
|
|
1381 |
{
|
|
1382 |
char buf[1024];
|
|
1383 |
int vlan_id, ret;
|
|
1384 |
VLANState *vlan;
|
|
1385 |
|
|
1386 |
vlan_id = 0;
|
|
1387 |
if (get_param_value(buf, sizeof(buf), "vlan", p)) {
|
|
1388 |
vlan_id = strtol(buf, NULL, 0);
|
|
1389 |
}
|
|
1390 |
vlan = qemu_find_vlan(vlan_id);
|
|
1391 |
if (!vlan) {
|
|
1392 |
fprintf(stderr, "Could not create vlan %d\n", vlan_id);
|
|
1393 |
return -1;
|
|
1394 |
}
|
|
1395 |
if (!strcmp(device, "nic")) {
|
|
1396 |
NICInfo *nd;
|
|
1397 |
uint8_t *macaddr;
|
|
1398 |
|
|
1399 |
if (nb_nics >= MAX_NICS) {
|
|
1400 |
fprintf(stderr, "Too Many NICs\n");
|
|
1401 |
return -1;
|
|
1402 |
}
|
|
1403 |
nd = &nd_table[nb_nics];
|
|
1404 |
macaddr = nd->macaddr;
|
|
1405 |
macaddr[0] = 0x52;
|
|
1406 |
macaddr[1] = 0x54;
|
|
1407 |
macaddr[2] = 0x00;
|
|
1408 |
macaddr[3] = 0x12;
|
|
1409 |
macaddr[4] = 0x34;
|
|
1410 |
macaddr[5] = 0x56 + nb_nics;
|
|
1411 |
|
|
1412 |
if (get_param_value(buf, sizeof(buf), "macaddr", p)) {
|
|
1413 |
if (parse_macaddr(macaddr, buf) < 0) {
|
|
1414 |
fprintf(stderr, "invalid syntax for ethernet address\n");
|
|
1415 |
return -1;
|
|
1416 |
}
|
|
1417 |
}
|
|
1418 |
if (get_param_value(buf, sizeof(buf), "model", p)) {
|
|
1419 |
nd->model = strdup(buf);
|
|
1420 |
}
|
|
1421 |
nd->vlan = vlan;
|
|
1422 |
nb_nics++;
|
|
1423 |
vlan->nb_guest_devs++;
|
|
1424 |
ret = 0;
|
|
1425 |
} else
|
|
1426 |
if (!strcmp(device, "none")) {
|
|
1427 |
/* does nothing. It is needed to signal that no network cards
|
|
1428 |
are wanted */
|
|
1429 |
ret = 0;
|
|
1430 |
} else
|
|
1431 |
#ifdef CONFIG_SLIRP
|
|
1432 |
if (!strcmp(device, "user")) {
|
|
1433 |
if (get_param_value(buf, sizeof(buf), "hostname", p)) {
|
|
1434 |
pstrcpy(slirp_hostname, sizeof(slirp_hostname), buf);
|
|
1435 |
}
|
|
1436 |
vlan->nb_host_devs++;
|
|
1437 |
ret = net_slirp_init(vlan);
|
|
1438 |
} else
|
|
1439 |
#endif
|
|
1440 |
#ifdef _WIN32
|
|
1441 |
if (!strcmp(device, "tap")) {
|
|
1442 |
char ifname[64];
|
|
1443 |
if (get_param_value(ifname, sizeof(ifname), "ifname", p) <= 0) {
|
|
1444 |
fprintf(stderr, "tap: no interface name\n");
|
|
1445 |
return -1;
|
|
1446 |
}
|
|
1447 |
vlan->nb_host_devs++;
|
|
1448 |
ret = tap_win32_init(vlan, ifname);
|
|
1449 |
} else
|
|
1450 |
#else
|
|
1451 |
if (!strcmp(device, "tap")) {
|
|
1452 |
char ifname[64];
|
|
1453 |
char setup_script[1024], down_script[1024];
|
|
1454 |
int fd;
|
|
1455 |
vlan->nb_host_devs++;
|
|
1456 |
if (get_param_value(buf, sizeof(buf), "fd", p) > 0) {
|
|
1457 |
fd = strtol(buf, NULL, 0);
|
|
1458 |
fcntl(fd, F_SETFL, O_NONBLOCK);
|
|
1459 |
ret = -1;
|
|
1460 |
if (net_tap_fd_init(vlan, fd))
|
|
1461 |
ret = 0;
|
|
1462 |
} else {
|
|
1463 |
if (get_param_value(ifname, sizeof(ifname), "ifname", p) <= 0) {
|
|
1464 |
ifname[0] = '\0';
|
|
1465 |
}
|
|
1466 |
if (get_param_value(setup_script, sizeof(setup_script), "script", p) == 0) {
|
|
1467 |
pstrcpy(setup_script, sizeof(setup_script), DEFAULT_NETWORK_SCRIPT);
|
|
1468 |
}
|
|
1469 |
if (get_param_value(down_script, sizeof(down_script), "downscript", p) == 0) {
|