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/*
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---|---|
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* QEMU System Emulator
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*
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* 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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* 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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* 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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* 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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* 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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#include "qemu-common.h" |
25 |
#include "net.h" |
26 |
#include "console.h" |
27 |
#include "sysemu.h" |
28 |
#include "qemu-timer.h" |
29 |
#include "qemu-char.h" |
30 |
#include "audio/audio.h" |
31 |
|
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#include <unistd.h> |
33 |
#include <fcntl.h> |
34 |
#include <signal.h> |
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#include <time.h> |
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#include <errno.h> |
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#include <sys/time.h> |
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#include <zlib.h> |
39 |
|
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#ifndef _WIN32
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#include <sys/times.h> |
42 |
#include <sys/wait.h> |
43 |
#include <termios.h> |
44 |
#include <sys/mman.h> |
45 |
#include <sys/ioctl.h> |
46 |
#include <sys/resource.h> |
47 |
#include <sys/socket.h> |
48 |
#include <netinet/in.h> |
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#include <net/if.h> |
50 |
#ifdef __NetBSD__
|
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#include <net/if_tap.h> |
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#endif
|
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#ifdef __linux__
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#include <linux/if_tun.h> |
55 |
#endif
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#include <arpa/inet.h> |
57 |
#include <dirent.h> |
58 |
#include <netdb.h> |
59 |
#include <sys/select.h> |
60 |
#ifdef _BSD
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#include <sys/stat.h> |
62 |
#ifdef __FreeBSD__
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#include <libutil.h> |
64 |
#else
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#include <util.h> |
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#endif
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#elif defined (__GLIBC__) && defined (__FreeBSD_kernel__)
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#include <freebsd/stdlib.h> |
69 |
#else
|
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#ifdef __linux__
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#include <pty.h> |
72 |
#include <malloc.h> |
73 |
#include <linux/rtc.h> |
74 |
|
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/* For the benefit of older linux systems which don't supply it,
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we use a local copy of hpet.h. */
|
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/* #include <linux/hpet.h> */
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#include "hpet.h" |
79 |
|
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#include <linux/ppdev.h> |
81 |
#include <linux/parport.h> |
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#endif
|
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#ifdef __sun__
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#include <sys/stat.h> |
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#include <sys/ethernet.h> |
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#include <sys/sockio.h> |
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#include <netinet/arp.h> |
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#include <netinet/in.h> |
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#include <netinet/in_systm.h> |
90 |
#include <netinet/ip.h> |
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#include <netinet/ip_icmp.h> // must come after ip.h |
92 |
#include <netinet/udp.h> |
93 |
#include <netinet/tcp.h> |
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#include <net/if.h> |
95 |
#include <syslog.h> |
96 |
#include <stropts.h> |
97 |
#endif
|
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#endif
|
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#endif
|
100 |
|
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#include "qemu_socket.h" |
102 |
|
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#if defined(CONFIG_SLIRP)
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#include "libslirp.h" |
105 |
#endif
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|
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#if defined(__OpenBSD__)
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#include <util.h> |
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#endif
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|
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#if defined(CONFIG_VDE)
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#include <libvdeplug.h> |
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#endif
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|
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#ifdef _WIN32
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#include <malloc.h> |
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#include <sys/timeb.h> |
118 |
#include <mmsystem.h> |
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#define getopt_long_only getopt_long
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#define memalign(align, size) malloc(size)
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#endif
|
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|
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#define DEFAULT_NETWORK_SCRIPT "/etc/qemu-ifup" |
124 |
#define DEFAULT_NETWORK_DOWN_SCRIPT "/etc/qemu-ifdown" |
125 |
#ifdef __sun__
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#define SMBD_COMMAND "/usr/sfw/sbin/smbd" |
127 |
#else
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#define SMBD_COMMAND "/usr/sbin/smbd" |
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#endif
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|
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static VLANState *first_vlan;
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|
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/***********************************************************/
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/* network device redirectors */
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|
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#if defined(DEBUG_NET) || defined(DEBUG_SLIRP)
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static void hex_dump(FILE *f, const uint8_t *buf, int size) |
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{ |
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int len, i, j, c;
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|
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for(i=0;i<size;i+=16) { |
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len = size - i; |
143 |
if (len > 16) |
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len = 16;
|
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fprintf(f, "%08x ", i);
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for(j=0;j<16;j++) { |
147 |
if (j < len)
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fprintf(f, " %02x", buf[i+j]);
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else
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fprintf(f, " ");
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} |
152 |
fprintf(f, " ");
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for(j=0;j<len;j++) { |
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c = buf[i+j]; |
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if (c < ' ' || c > '~') |
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c = '.';
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fprintf(f, "%c", c);
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} |
159 |
fprintf(f, "\n");
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} |
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} |
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#endif
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|
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static int parse_macaddr(uint8_t *macaddr, const char *p) |
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{ |
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int i;
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char *last_char;
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long int offset; |
169 |
|
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errno = 0;
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offset = strtol(p, &last_char, 0);
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if (0 == errno && '\0' == *last_char && |
173 |
offset >= 0 && offset <= 0xFFFFFF) { |
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macaddr[3] = (offset & 0xFF0000) >> 16; |
175 |
macaddr[4] = (offset & 0xFF00) >> 8; |
176 |
macaddr[5] = offset & 0xFF; |
177 |
return 0; |
178 |
} else {
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for(i = 0; i < 6; i++) { |
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macaddr[i] = strtol(p, (char **)&p, 16); |
181 |
if (i == 5) { |
182 |
if (*p != '\0') |
183 |
return -1; |
184 |
} else {
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if (*p != ':' && *p != '-') |
186 |
return -1; |
187 |
p++; |
188 |
} |
189 |
} |
190 |
return 0; |
191 |
} |
192 |
|
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return -1; |
194 |
} |
195 |
|
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static int get_str_sep(char *buf, int buf_size, const char **pp, int sep) |
197 |
{ |
198 |
const char *p, *p1; |
199 |
int len;
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p = *pp; |
201 |
p1 = strchr(p, sep); |
202 |
if (!p1)
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return -1; |
204 |
len = p1 - p; |
205 |
p1++; |
206 |
if (buf_size > 0) { |
207 |
if (len > buf_size - 1) |
208 |
len = buf_size - 1;
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memcpy(buf, p, len); |
210 |
buf[len] = '\0';
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} |
212 |
*pp = p1; |
213 |
return 0; |
214 |
} |
215 |
|
216 |
int parse_host_src_port(struct sockaddr_in *haddr, |
217 |
struct sockaddr_in *saddr,
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const char *input_str) |
219 |
{ |
220 |
char *str = strdup(input_str);
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char *host_str = str;
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char *src_str;
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223 |
const char *src_str2; |
224 |
char *ptr;
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225 |
|
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/*
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* Chop off any extra arguments at the end of the string which
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* would start with a comma, then fill in the src port information
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* if it was provided else use the "any address" and "any port".
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*/
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if ((ptr = strchr(str,','))) |
232 |
*ptr = '\0';
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233 |
|
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if ((src_str = strchr(input_str,'@'))) { |
235 |
*src_str = '\0';
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src_str++; |
237 |
} |
238 |
|
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if (parse_host_port(haddr, host_str) < 0) |
240 |
goto fail;
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src_str2 = src_str; |
243 |
if (!src_str || *src_str == '\0') |
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src_str2 = ":0";
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if (parse_host_port(saddr, src_str2) < 0) |
247 |
goto fail;
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248 |
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free(str); |
250 |
return(0); |
251 |
|
252 |
fail:
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free(str); |
254 |
return -1; |
255 |
} |
256 |
|
257 |
int parse_host_port(struct sockaddr_in *saddr, const char *str) |
258 |
{ |
259 |
char buf[512]; |
260 |
struct hostent *he;
|
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const char *p, *r; |
262 |
int port;
|
263 |
|
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p = str; |
265 |
if (get_str_sep(buf, sizeof(buf), &p, ':') < 0) |
266 |
return -1; |
267 |
saddr->sin_family = AF_INET; |
268 |
if (buf[0] == '\0') { |
269 |
saddr->sin_addr.s_addr = 0;
|
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} else {
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if (qemu_isdigit(buf[0])) { |
272 |
if (!inet_aton(buf, &saddr->sin_addr))
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return -1; |
274 |
} else {
|
275 |
if ((he = gethostbyname(buf)) == NULL) |
276 |
return - 1; |
277 |
saddr->sin_addr = *(struct in_addr *)he->h_addr;
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} |
279 |
} |
280 |
port = strtol(p, (char **)&r, 0); |
281 |
if (r == p)
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return -1; |
283 |
saddr->sin_port = htons(port); |
284 |
return 0; |
285 |
} |
286 |
|
287 |
#ifndef _WIN32
|
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int parse_unix_path(struct sockaddr_un *uaddr, const char *str) |
289 |
{ |
290 |
const char *p; |
291 |
int len;
|
292 |
|
293 |
len = MIN(108, strlen(str));
|
294 |
p = strchr(str, ',');
|
295 |
if (p)
|
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len = MIN(len, p - str); |
297 |
|
298 |
memset(uaddr, 0, sizeof(*uaddr)); |
299 |
|
300 |
uaddr->sun_family = AF_UNIX; |
301 |
memcpy(uaddr->sun_path, str, len); |
302 |
|
303 |
return 0; |
304 |
} |
305 |
#endif
|
306 |
|
307 |
VLANClientState *qemu_new_vlan_client(VLANState *vlan, |
308 |
IOReadHandler *fd_read, |
309 |
IOCanRWHandler *fd_can_read, |
310 |
void *opaque)
|
311 |
{ |
312 |
VLANClientState *vc, **pvc; |
313 |
vc = qemu_mallocz(sizeof(VLANClientState));
|
314 |
if (!vc)
|
315 |
return NULL; |
316 |
vc->fd_read = fd_read; |
317 |
vc->fd_can_read = fd_can_read; |
318 |
vc->opaque = opaque; |
319 |
vc->vlan = vlan; |
320 |
|
321 |
vc->next = NULL;
|
322 |
pvc = &vlan->first_client; |
323 |
while (*pvc != NULL) |
324 |
pvc = &(*pvc)->next; |
325 |
*pvc = vc; |
326 |
return vc;
|
327 |
} |
328 |
|
329 |
void qemu_del_vlan_client(VLANClientState *vc)
|
330 |
{ |
331 |
VLANClientState **pvc = &vc->vlan->first_client; |
332 |
|
333 |
while (*pvc != NULL) |
334 |
if (*pvc == vc) {
|
335 |
*pvc = vc->next; |
336 |
free(vc); |
337 |
break;
|
338 |
} else
|
339 |
pvc = &(*pvc)->next; |
340 |
} |
341 |
|
342 |
int qemu_can_send_packet(VLANClientState *vc1)
|
343 |
{ |
344 |
VLANState *vlan = vc1->vlan; |
345 |
VLANClientState *vc; |
346 |
|
347 |
for(vc = vlan->first_client; vc != NULL; vc = vc->next) { |
348 |
if (vc != vc1) {
|
349 |
if (vc->fd_can_read && vc->fd_can_read(vc->opaque))
|
350 |
return 1; |
351 |
} |
352 |
} |
353 |
return 0; |
354 |
} |
355 |
|
356 |
void qemu_send_packet(VLANClientState *vc1, const uint8_t *buf, int size) |
357 |
{ |
358 |
VLANState *vlan = vc1->vlan; |
359 |
VLANClientState *vc; |
360 |
|
361 |
#ifdef DEBUG_NET
|
362 |
printf("vlan %d send:\n", vlan->id);
|
363 |
hex_dump(stdout, buf, size); |
364 |
#endif
|
365 |
for(vc = vlan->first_client; vc != NULL; vc = vc->next) { |
366 |
if (vc != vc1) {
|
367 |
vc->fd_read(vc->opaque, buf, size); |
368 |
} |
369 |
} |
370 |
} |
371 |
|
372 |
#if defined(CONFIG_SLIRP)
|
373 |
|
374 |
/* slirp network adapter */
|
375 |
|
376 |
static int slirp_inited; |
377 |
static VLANClientState *slirp_vc;
|
378 |
|
379 |
int slirp_can_output(void) |
380 |
{ |
381 |
return !slirp_vc || qemu_can_send_packet(slirp_vc);
|
382 |
} |
383 |
|
384 |
void slirp_output(const uint8_t *pkt, int pkt_len) |
385 |
{ |
386 |
#ifdef DEBUG_SLIRP
|
387 |
printf("slirp output:\n");
|
388 |
hex_dump(stdout, pkt, pkt_len); |
389 |
#endif
|
390 |
if (!slirp_vc)
|
391 |
return;
|
392 |
qemu_send_packet(slirp_vc, pkt, pkt_len); |
393 |
} |
394 |
|
395 |
int slirp_is_inited(void) |
396 |
{ |
397 |
return slirp_inited;
|
398 |
} |
399 |
|
400 |
static void slirp_receive(void *opaque, const uint8_t *buf, int size) |
401 |
{ |
402 |
#ifdef DEBUG_SLIRP
|
403 |
printf("slirp input:\n");
|
404 |
hex_dump(stdout, buf, size); |
405 |
#endif
|
406 |
slirp_input(buf, size); |
407 |
} |
408 |
|
409 |
static int net_slirp_init(VLANState *vlan) |
410 |
{ |
411 |
if (!slirp_inited) {
|
412 |
slirp_inited = 1;
|
413 |
slirp_init(); |
414 |
} |
415 |
slirp_vc = qemu_new_vlan_client(vlan, |
416 |
slirp_receive, NULL, NULL); |
417 |
snprintf(slirp_vc->info_str, sizeof(slirp_vc->info_str), "user redirector"); |
418 |
return 0; |
419 |
} |
420 |
|
421 |
void net_slirp_redir(const char *redir_str) |
422 |
{ |
423 |
int is_udp;
|
424 |
char buf[256], *r; |
425 |
const char *p; |
426 |
struct in_addr guest_addr;
|
427 |
int host_port, guest_port;
|
428 |
|
429 |
if (!slirp_inited) {
|
430 |
slirp_inited = 1;
|
431 |
slirp_init(); |
432 |
} |
433 |
|
434 |
p = redir_str; |
435 |
if (get_str_sep(buf, sizeof(buf), &p, ':') < 0) |
436 |
goto fail;
|
437 |
if (!strcmp(buf, "tcp")) { |
438 |
is_udp = 0;
|
439 |
} else if (!strcmp(buf, "udp")) { |
440 |
is_udp = 1;
|
441 |
} else {
|
442 |
goto fail;
|
443 |
} |
444 |
|
445 |
if (get_str_sep(buf, sizeof(buf), &p, ':') < 0) |
446 |
goto fail;
|
447 |
host_port = strtol(buf, &r, 0);
|
448 |
if (r == buf)
|
449 |
goto fail;
|
450 |
|
451 |
if (get_str_sep(buf, sizeof(buf), &p, ':') < 0) |
452 |
goto fail;
|
453 |
if (buf[0] == '\0') { |
454 |
pstrcpy(buf, sizeof(buf), "10.0.2.15"); |
455 |
} |
456 |
if (!inet_aton(buf, &guest_addr))
|
457 |
goto fail;
|
458 |
|
459 |
guest_port = strtol(p, &r, 0);
|
460 |
if (r == p)
|
461 |
goto fail;
|
462 |
|
463 |
if (slirp_redir(is_udp, host_port, guest_addr, guest_port) < 0) { |
464 |
fprintf(stderr, "qemu: could not set up redirection\n");
|
465 |
exit(1);
|
466 |
} |
467 |
return;
|
468 |
fail:
|
469 |
fprintf(stderr, "qemu: syntax: -redir [tcp|udp]:host-port:[guest-host]:guest-port\n");
|
470 |
exit(1);
|
471 |
} |
472 |
|
473 |
#ifndef _WIN32
|
474 |
|
475 |
static char smb_dir[1024]; |
476 |
|
477 |
static void erase_dir(char *dir_name) |
478 |
{ |
479 |
DIR *d; |
480 |
struct dirent *de;
|
481 |
char filename[1024]; |
482 |
|
483 |
/* erase all the files in the directory */
|
484 |
if ((d = opendir(dir_name)) != 0) { |
485 |
for(;;) {
|
486 |
de = readdir(d); |
487 |
if (!de)
|
488 |
break;
|
489 |
if (strcmp(de->d_name, ".") != 0 && |
490 |
strcmp(de->d_name, "..") != 0) { |
491 |
snprintf(filename, sizeof(filename), "%s/%s", |
492 |
smb_dir, de->d_name); |
493 |
if (unlink(filename) != 0) /* is it a directory? */ |
494 |
erase_dir(filename); |
495 |
} |
496 |
} |
497 |
closedir(d); |
498 |
rmdir(dir_name); |
499 |
} |
500 |
} |
501 |
|
502 |
/* automatic user mode samba server configuration */
|
503 |
static void smb_exit(void) |
504 |
{ |
505 |
erase_dir(smb_dir); |
506 |
} |
507 |
|
508 |
/* automatic user mode samba server configuration */
|
509 |
void net_slirp_smb(const char *exported_dir) |
510 |
{ |
511 |
char smb_conf[1024]; |
512 |
char smb_cmdline[1024]; |
513 |
FILE *f; |
514 |
|
515 |
if (!slirp_inited) {
|
516 |
slirp_inited = 1;
|
517 |
slirp_init(); |
518 |
} |
519 |
|
520 |
/* XXX: better tmp dir construction */
|
521 |
snprintf(smb_dir, sizeof(smb_dir), "/tmp/qemu-smb.%d", getpid()); |
522 |
if (mkdir(smb_dir, 0700) < 0) { |
523 |
fprintf(stderr, "qemu: could not create samba server dir '%s'\n", smb_dir);
|
524 |
exit(1);
|
525 |
} |
526 |
snprintf(smb_conf, sizeof(smb_conf), "%s/%s", smb_dir, "smb.conf"); |
527 |
|
528 |
f = fopen(smb_conf, "w");
|
529 |
if (!f) {
|
530 |
fprintf(stderr, "qemu: could not create samba server configuration file '%s'\n", smb_conf);
|
531 |
exit(1);
|
532 |
} |
533 |
fprintf(f, |
534 |
"[global]\n"
|
535 |
"private dir=%s\n"
|
536 |
"smb ports=0\n"
|
537 |
"socket address=127.0.0.1\n"
|
538 |
"pid directory=%s\n"
|
539 |
"lock directory=%s\n"
|
540 |
"log file=%s/log.smbd\n"
|
541 |
"smb passwd file=%s/smbpasswd\n"
|
542 |
"security = share\n"
|
543 |
"[qemu]\n"
|
544 |
"path=%s\n"
|
545 |
"read only=no\n"
|
546 |
"guest ok=yes\n",
|
547 |
smb_dir, |
548 |
smb_dir, |
549 |
smb_dir, |
550 |
smb_dir, |
551 |
smb_dir, |
552 |
exported_dir |
553 |
); |
554 |
fclose(f); |
555 |
atexit(smb_exit); |
556 |
|
557 |
snprintf(smb_cmdline, sizeof(smb_cmdline), "%s -s %s", |
558 |
SMBD_COMMAND, smb_conf); |
559 |
|
560 |
slirp_add_exec(0, smb_cmdline, 4, 139); |
561 |
} |
562 |
|
563 |
#endif /* !defined(_WIN32) */ |
564 |
void do_info_slirp(void) |
565 |
{ |
566 |
slirp_stats(); |
567 |
} |
568 |
|
569 |
#endif /* CONFIG_SLIRP */ |
570 |
|
571 |
#if !defined(_WIN32)
|
572 |
|
573 |
typedef struct TAPState { |
574 |
VLANClientState *vc; |
575 |
int fd;
|
576 |
char down_script[1024]; |
577 |
} TAPState; |
578 |
|
579 |
static void tap_receive(void *opaque, const uint8_t *buf, int size) |
580 |
{ |
581 |
TAPState *s = opaque; |
582 |
int ret;
|
583 |
for(;;) {
|
584 |
ret = write(s->fd, buf, size); |
585 |
if (ret < 0 && (errno == EINTR || errno == EAGAIN)) { |
586 |
} else {
|
587 |
break;
|
588 |
} |
589 |
} |
590 |
} |
591 |
|
592 |
static void tap_send(void *opaque) |
593 |
{ |
594 |
TAPState *s = opaque; |
595 |
uint8_t buf[4096];
|
596 |
int size;
|
597 |
|
598 |
#ifdef __sun__
|
599 |
struct strbuf sbuf;
|
600 |
int f = 0; |
601 |
sbuf.maxlen = sizeof(buf);
|
602 |
sbuf.buf = buf; |
603 |
size = getmsg(s->fd, NULL, &sbuf, &f) >=0 ? sbuf.len : -1; |
604 |
#else
|
605 |
size = read(s->fd, buf, sizeof(buf));
|
606 |
#endif
|
607 |
if (size > 0) { |
608 |
qemu_send_packet(s->vc, buf, size); |
609 |
} |
610 |
} |
611 |
|
612 |
/* fd support */
|
613 |
|
614 |
static TAPState *net_tap_fd_init(VLANState *vlan, int fd) |
615 |
{ |
616 |
TAPState *s; |
617 |
|
618 |
s = qemu_mallocz(sizeof(TAPState));
|
619 |
if (!s)
|
620 |
return NULL; |
621 |
s->fd = fd; |
622 |
s->vc = qemu_new_vlan_client(vlan, tap_receive, NULL, s);
|
623 |
qemu_set_fd_handler(s->fd, tap_send, NULL, s);
|
624 |
snprintf(s->vc->info_str, sizeof(s->vc->info_str), "tap: fd=%d", fd); |
625 |
return s;
|
626 |
} |
627 |
|
628 |
#if defined (_BSD) || defined (__FreeBSD_kernel__)
|
629 |
static int tap_open(char *ifname, int ifname_size) |
630 |
{ |
631 |
int fd;
|
632 |
char *dev;
|
633 |
struct stat s;
|
634 |
|
635 |
TFR(fd = open("/dev/tap", O_RDWR));
|
636 |
if (fd < 0) { |
637 |
fprintf(stderr, "warning: could not open /dev/tap: no virtual network emulation\n");
|
638 |
return -1; |
639 |
} |
640 |
|
641 |
fstat(fd, &s); |
642 |
dev = devname(s.st_rdev, S_IFCHR); |
643 |
pstrcpy(ifname, ifname_size, dev); |
644 |
|
645 |
fcntl(fd, F_SETFL, O_NONBLOCK); |
646 |
return fd;
|
647 |
} |
648 |
#elif defined(__sun__)
|
649 |
#define TUNNEWPPA (('T'<<16) | 0x0001) |
650 |
/*
|
651 |
* Allocate TAP device, returns opened fd.
|
652 |
* Stores dev name in the first arg(must be large enough).
|
653 |
*/
|
654 |
int tap_alloc(char *dev, size_t dev_size) |
655 |
{ |
656 |
int tap_fd, if_fd, ppa = -1; |
657 |
static int ip_fd = 0; |
658 |
char *ptr;
|
659 |
|
660 |
static int arp_fd = 0; |
661 |
int ip_muxid, arp_muxid;
|
662 |
struct strioctl strioc_if, strioc_ppa;
|
663 |
int link_type = I_PLINK;;
|
664 |
struct lifreq ifr;
|
665 |
char actual_name[32] = ""; |
666 |
|
667 |
memset(&ifr, 0x0, sizeof(ifr)); |
668 |
|
669 |
if( *dev ){
|
670 |
ptr = dev; |
671 |
while( *ptr && !qemu_isdigit((int)*ptr) ) ptr++; |
672 |
ppa = atoi(ptr); |
673 |
} |
674 |
|
675 |
/* Check if IP device was opened */
|
676 |
if( ip_fd )
|
677 |
close(ip_fd); |
678 |
|
679 |
TFR(ip_fd = open("/dev/udp", O_RDWR, 0)); |
680 |
if (ip_fd < 0) { |
681 |
syslog(LOG_ERR, "Can't open /dev/ip (actually /dev/udp)");
|
682 |
return -1; |
683 |
} |
684 |
|
685 |
TFR(tap_fd = open("/dev/tap", O_RDWR, 0)); |
686 |
if (tap_fd < 0) { |
687 |
syslog(LOG_ERR, "Can't open /dev/tap");
|
688 |
return -1; |
689 |
} |
690 |
|
691 |
/* Assign a new PPA and get its unit number. */
|
692 |
strioc_ppa.ic_cmd = TUNNEWPPA; |
693 |
strioc_ppa.ic_timout = 0;
|
694 |
strioc_ppa.ic_len = sizeof(ppa);
|
695 |
strioc_ppa.ic_dp = (char *)&ppa;
|
696 |
if ((ppa = ioctl (tap_fd, I_STR, &strioc_ppa)) < 0) |
697 |
syslog (LOG_ERR, "Can't assign new interface");
|
698 |
|
699 |
TFR(if_fd = open("/dev/tap", O_RDWR, 0)); |
700 |
if (if_fd < 0) { |
701 |
syslog(LOG_ERR, "Can't open /dev/tap (2)");
|
702 |
return -1; |
703 |
} |
704 |
if(ioctl(if_fd, I_PUSH, "ip") < 0){ |
705 |
syslog(LOG_ERR, "Can't push IP module");
|
706 |
return -1; |
707 |
} |
708 |
|
709 |
if (ioctl(if_fd, SIOCGLIFFLAGS, &ifr) < 0) |
710 |
syslog(LOG_ERR, "Can't get flags\n");
|
711 |
|
712 |
snprintf (actual_name, 32, "tap%d", ppa); |
713 |
pstrcpy(ifr.lifr_name, sizeof(ifr.lifr_name), actual_name);
|
714 |
|
715 |
ifr.lifr_ppa = ppa; |
716 |
/* Assign ppa according to the unit number returned by tun device */
|
717 |
|
718 |
if (ioctl (if_fd, SIOCSLIFNAME, &ifr) < 0) |
719 |
syslog (LOG_ERR, "Can't set PPA %d", ppa);
|
720 |
if (ioctl(if_fd, SIOCGLIFFLAGS, &ifr) <0) |
721 |
syslog (LOG_ERR, "Can't get flags\n");
|
722 |
/* Push arp module to if_fd */
|
723 |
if (ioctl (if_fd, I_PUSH, "arp") < 0) |
724 |
syslog (LOG_ERR, "Can't push ARP module (2)");
|
725 |
|
726 |
/* Push arp module to ip_fd */
|
727 |
if (ioctl (ip_fd, I_POP, NULL) < 0) |
728 |
syslog (LOG_ERR, "I_POP failed\n");
|
729 |
if (ioctl (ip_fd, I_PUSH, "arp") < 0) |
730 |
syslog (LOG_ERR, "Can't push ARP module (3)\n");
|
731 |
/* Open arp_fd */
|
732 |
TFR(arp_fd = open ("/dev/tap", O_RDWR, 0)); |
733 |
if (arp_fd < 0) |
734 |
syslog (LOG_ERR, "Can't open %s\n", "/dev/tap"); |
735 |
|
736 |
/* Set ifname to arp */
|
737 |
strioc_if.ic_cmd = SIOCSLIFNAME; |
738 |
strioc_if.ic_timout = 0;
|
739 |
strioc_if.ic_len = sizeof(ifr);
|
740 |
strioc_if.ic_dp = (char *)𝔦
|
741 |
if (ioctl(arp_fd, I_STR, &strioc_if) < 0){ |
742 |
syslog (LOG_ERR, "Can't set ifname to arp\n");
|
743 |
} |
744 |
|
745 |
if((ip_muxid = ioctl(ip_fd, I_LINK, if_fd)) < 0){ |
746 |
syslog(LOG_ERR, "Can't link TAP device to IP");
|
747 |
return -1; |
748 |
} |
749 |
|
750 |
if ((arp_muxid = ioctl (ip_fd, link_type, arp_fd)) < 0) |
751 |
syslog (LOG_ERR, "Can't link TAP device to ARP");
|
752 |
|
753 |
close (if_fd); |
754 |
|
755 |
memset(&ifr, 0x0, sizeof(ifr)); |
756 |
pstrcpy(ifr.lifr_name, sizeof(ifr.lifr_name), actual_name);
|
757 |
ifr.lifr_ip_muxid = ip_muxid; |
758 |
ifr.lifr_arp_muxid = arp_muxid; |
759 |
|
760 |
if (ioctl (ip_fd, SIOCSLIFMUXID, &ifr) < 0) |
761 |
{ |
762 |
ioctl (ip_fd, I_PUNLINK , arp_muxid); |
763 |
ioctl (ip_fd, I_PUNLINK, ip_muxid); |
764 |
syslog (LOG_ERR, "Can't set multiplexor id");
|
765 |
} |
766 |
|
767 |
snprintf(dev, dev_size, "tap%d", ppa);
|
768 |
return tap_fd;
|
769 |
} |
770 |
|
771 |
static int tap_open(char *ifname, int ifname_size) |
772 |
{ |
773 |
char dev[10]=""; |
774 |
int fd;
|
775 |
if( (fd = tap_alloc(dev, sizeof(dev))) < 0 ){ |
776 |
fprintf(stderr, "Cannot allocate TAP device\n");
|
777 |
return -1; |
778 |
} |
779 |
pstrcpy(ifname, ifname_size, dev); |
780 |
fcntl(fd, F_SETFL, O_NONBLOCK); |
781 |
return fd;
|
782 |
} |
783 |
#elif defined (_AIX)
|
784 |
static int tap_open(char *ifname, int ifname_size) |
785 |
{ |
786 |
fprintf (stderr, "no tap on AIX\n");
|
787 |
return -1; |
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 |
#elif defined (_AIX)
|
1451 |
#else
|
1452 |
if (!strcmp(device, "tap")) { |
1453 |
char ifname[64]; |
1454 |
char setup_script[1024], down_script[1024]; |
1455 |
int fd;
|
1456 |
vlan->nb_host_devs++; |
1457 |
if (get_param_value(buf, sizeof(buf), "fd", p) > 0) { |
1458 |
fd = strtol(buf, NULL, 0); |
1459 |
fcntl(fd, F_SETFL, O_NONBLOCK); |
1460 |
ret = -1;
|
1461 |
if (net_tap_fd_init(vlan, fd))
|
1462 |
ret = 0;
|
1463 |
} else {
|
1464 |
if (get_param_value(ifname, sizeof(ifname), "ifname", p) <= 0) { |
1465 |
ifname[0] = '\0'; |
1466 |
} |
1467 |
if (get_param_value(setup_script, sizeof(setup_script), "script", p) == 0) { |
1468 |
pstrcpy(setup_script, sizeof(setup_script), DEFAULT_NETWORK_SCRIPT);
|
1469 |
} |
1470 |
if (get_param_value(down_script, sizeof(down_script), "downscript", p) == 0) { |
1471 |
pstrcpy(down_script, sizeof(down_script), DEFAULT_NETWORK_DOWN_SCRIPT);
|
1472 |
} |
1473 |
ret = net_tap_init(vlan, ifname, setup_script, down_script); |
1474 |
} |
1475 |
} else
|
1476 |
#endif
|
1477 |
if (!strcmp(device, "socket")) { |
1478 |
if (get_param_value(buf, sizeof(buf), "fd", p) > 0) { |
1479 |
int fd;
|
1480 |
fd = strtol(buf, NULL, 0); |
1481 |
ret = -1;
|
1482 |
if (net_socket_fd_init(vlan, fd, 1)) |
1483 |
ret = 0;
|
1484 |
} else if (get_param_value(buf, sizeof(buf), "listen", p) > 0) { |
1485 |
ret = net_socket_listen_init(vlan, buf); |
1486 |
} else if (get_param_value(buf, sizeof(buf), "connect", p) > 0) { |
1487 |
ret = net_socket_connect_init(vlan, buf); |
1488 |
} else if (get_param_value(buf, sizeof(buf), "mcast", p) > 0) { |
1489 |
ret = net_socket_mcast_init(vlan, buf); |
1490 |
} else {
|
1491 |
fprintf(stderr, "Unknown socket options: %s\n", p);
|
1492 |
return -1; |
1493 |
} |
1494 |
vlan->nb_host_devs++; |
1495 |
} else
|
1496 |
#ifdef CONFIG_VDE
|
1497 |
if (!strcmp(device, "vde")) { |
1498 |
char vde_sock[1024], vde_group[512]; |
1499 |
int vde_port, vde_mode;
|
1500 |
vlan->nb_host_devs++; |
1501 |
if (get_param_value(vde_sock, sizeof(vde_sock), "sock", p) <= 0) { |
1502 |
vde_sock[0] = '\0'; |
1503 |
} |
1504 |
if (get_param_value(buf, sizeof(buf), "port", p) > 0) { |
1505 |
vde_port = strtol(buf, NULL, 10); |
1506 |
} else {
|
1507 |
vde_port = 0;
|
1508 |
} |
1509 |
if (get_param_value(vde_group, sizeof(vde_group), "group", p) <= 0) { |
1510 |
vde_group[0] = '\0'; |
1511 |
} |
1512 |
if (get_param_value(buf, sizeof(buf), "mode", p) > 0) { |
1513 |
vde_mode = strtol(buf, NULL, 8); |
1514 |
} else {
|
1515 |
vde_mode = 0700;
|
1516 |
} |
1517 |
ret = net_vde_init(vlan, vde_sock, vde_port, vde_group, vde_mode); |
1518 |
} else
|
1519 |
#endif
|
1520 |
{ |
1521 |
fprintf(stderr, "Unknown network device: %s\n", device);
|
1522 |
return -1; |
1523 |
} |
1524 |
if (ret < 0) { |
1525 |
fprintf(stderr, "Could not initialize device '%s'\n", device);
|
1526 |
} |
1527 |
|
1528 |
return ret;
|
1529 |
} |
1530 |
|
1531 |
int net_client_parse(const char *str) |
1532 |
{ |
1533 |
const char *p; |
1534 |
char *q;
|
1535 |
char device[64]; |
1536 |
|
1537 |
p = str; |
1538 |
q = device; |
1539 |
while (*p != '\0' && *p != ',') { |
1540 |
if ((q - device) < sizeof(device) - 1) |
1541 |
*q++ = *p; |
1542 |
p++; |
1543 |
} |
1544 |
*q = '\0';
|
1545 |
if (*p == ',') |
1546 |
p++; |
1547 |
|
1548 |
return net_client_init(device, p);
|
1549 |
} |
1550 |
|
1551 |
void do_info_network(void) |
1552 |
{ |
1553 |
VLANState *vlan; |
1554 |
VLANClientState *vc; |
1555 |
|
1556 |
for(vlan = first_vlan; vlan != NULL; vlan = vlan->next) { |
1557 |
term_printf("VLAN %d devices:\n", vlan->id);
|
1558 |
for(vc = vlan->first_client; vc != NULL; vc = vc->next) |
1559 |
term_printf(" %s\n", vc->info_str);
|
1560 |
} |
1561 |
} |
1562 |
|
1563 |
void net_cleanup(void) |
1564 |
{ |
1565 |
VLANState *vlan; |
1566 |
|
1567 |
#if !defined(_WIN32)
|
1568 |
/* close network clients */
|
1569 |
for(vlan = first_vlan; vlan != NULL; vlan = vlan->next) { |
1570 |
VLANClientState *vc; |
1571 |
|
1572 |
for(vc = vlan->first_client; vc != NULL; vc = vc->next) { |
1573 |
if (vc->fd_read == tap_receive) {
|
1574 |
char ifname[64]; |
1575 |
TAPState *s = vc->opaque; |
1576 |
|
1577 |
if (sscanf(vc->info_str, "tap: ifname=%63s ", ifname) == 1 && |
1578 |
s->down_script[0])
|
1579 |
launch_script(s->down_script, ifname, s->fd); |
1580 |
} |
1581 |
#if defined(CONFIG_VDE)
|
1582 |
if (vc->fd_read == vde_from_qemu) {
|
1583 |
VDEState *s = vc->opaque; |
1584 |
vde_close(s->vde); |
1585 |
} |
1586 |
#endif
|
1587 |
} |
1588 |
} |
1589 |
#endif
|
1590 |
} |
1591 |
|
1592 |
void net_client_check(void) |
1593 |
{ |
1594 |
VLANState *vlan; |
1595 |
|
1596 |
for(vlan = first_vlan; vlan != NULL; vlan = vlan->next) { |
1597 |
if (vlan->nb_guest_devs == 0 && vlan->nb_host_devs == 0) |
1598 |
continue;
|
1599 |
if (vlan->nb_guest_devs == 0) |
1600 |
fprintf(stderr, "Warning: vlan %d with no nics\n", vlan->id);
|
1601 |
if (vlan->nb_host_devs == 0) |
1602 |
fprintf(stderr, |
1603 |
"Warning: vlan %d is not connected to host network\n",
|
1604 |
vlan->id); |
1605 |
} |
1606 |
} |