mirror of https://gitee.com/openkylin/qemu.git
2695 lines
68 KiB
C
2695 lines
68 KiB
C
/*
|
|
* QEMU System Emulator
|
|
*
|
|
* Copyright (c) 2003-2008 Fabrice Bellard
|
|
*
|
|
* Permission is hereby granted, free of charge, to any person obtaining a copy
|
|
* of this software and associated documentation files (the "Software"), to deal
|
|
* in the Software without restriction, including without limitation the rights
|
|
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
|
|
* copies of the Software, and to permit persons to whom the Software is
|
|
* furnished to do so, subject to the following conditions:
|
|
*
|
|
* The above copyright notice and this permission notice shall be included in
|
|
* all copies or substantial portions of the Software.
|
|
*
|
|
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
|
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
|
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
|
|
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
|
|
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
|
|
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
|
|
* THE SOFTWARE.
|
|
*/
|
|
#include "qemu-common.h"
|
|
#include "net.h"
|
|
#include "monitor.h"
|
|
#include "console.h"
|
|
#include "sysemu.h"
|
|
#include "qemu-timer.h"
|
|
#include "qemu-char.h"
|
|
#include "hw/usb.h"
|
|
#include "hw/baum.h"
|
|
#include "hw/msmouse.h"
|
|
#include "qemu-objects.h"
|
|
|
|
#include <unistd.h>
|
|
#include <fcntl.h>
|
|
#include <time.h>
|
|
#include <errno.h>
|
|
#include <sys/time.h>
|
|
#include <zlib.h>
|
|
|
|
#ifndef _WIN32
|
|
#include <sys/times.h>
|
|
#include <sys/wait.h>
|
|
#include <termios.h>
|
|
#include <sys/mman.h>
|
|
#include <sys/ioctl.h>
|
|
#include <sys/resource.h>
|
|
#include <sys/socket.h>
|
|
#include <netinet/in.h>
|
|
#include <net/if.h>
|
|
#include <arpa/inet.h>
|
|
#include <dirent.h>
|
|
#include <netdb.h>
|
|
#include <sys/select.h>
|
|
#ifdef CONFIG_BSD
|
|
#include <sys/stat.h>
|
|
#if defined(__FreeBSD__) || defined(__FreeBSD_kernel__)
|
|
#include <libutil.h>
|
|
#include <dev/ppbus/ppi.h>
|
|
#include <dev/ppbus/ppbconf.h>
|
|
#if defined(__GLIBC__)
|
|
#include <pty.h>
|
|
#endif
|
|
#elif defined(__DragonFly__)
|
|
#include <libutil.h>
|
|
#include <dev/misc/ppi/ppi.h>
|
|
#include <bus/ppbus/ppbconf.h>
|
|
#else
|
|
#include <util.h>
|
|
#endif
|
|
#else
|
|
#ifdef __linux__
|
|
#include <pty.h>
|
|
|
|
#include <linux/ppdev.h>
|
|
#include <linux/parport.h>
|
|
#endif
|
|
#ifdef __sun__
|
|
#include <sys/stat.h>
|
|
#include <sys/ethernet.h>
|
|
#include <sys/sockio.h>
|
|
#include <netinet/arp.h>
|
|
#include <netinet/in.h>
|
|
#include <netinet/in_systm.h>
|
|
#include <netinet/ip.h>
|
|
#include <netinet/ip_icmp.h> // must come after ip.h
|
|
#include <netinet/udp.h>
|
|
#include <netinet/tcp.h>
|
|
#include <net/if.h>
|
|
#include <syslog.h>
|
|
#include <stropts.h>
|
|
#endif
|
|
#endif
|
|
#endif
|
|
|
|
#include "qemu_socket.h"
|
|
#include "ui/qemu-spice.h"
|
|
|
|
#define READ_BUF_LEN 4096
|
|
|
|
/***********************************************************/
|
|
/* character device */
|
|
|
|
static QTAILQ_HEAD(CharDriverStateHead, CharDriverState) chardevs =
|
|
QTAILQ_HEAD_INITIALIZER(chardevs);
|
|
|
|
static void qemu_chr_event(CharDriverState *s, int event)
|
|
{
|
|
/* Keep track if the char device is open */
|
|
switch (event) {
|
|
case CHR_EVENT_OPENED:
|
|
s->opened = 1;
|
|
break;
|
|
case CHR_EVENT_CLOSED:
|
|
s->opened = 0;
|
|
break;
|
|
}
|
|
|
|
if (!s->chr_event)
|
|
return;
|
|
s->chr_event(s->handler_opaque, event);
|
|
}
|
|
|
|
static void qemu_chr_generic_open_bh(void *opaque)
|
|
{
|
|
CharDriverState *s = opaque;
|
|
qemu_chr_event(s, CHR_EVENT_OPENED);
|
|
qemu_bh_delete(s->bh);
|
|
s->bh = NULL;
|
|
}
|
|
|
|
void qemu_chr_generic_open(CharDriverState *s)
|
|
{
|
|
if (s->bh == NULL) {
|
|
s->bh = qemu_bh_new(qemu_chr_generic_open_bh, s);
|
|
qemu_bh_schedule(s->bh);
|
|
}
|
|
}
|
|
|
|
int qemu_chr_fe_write(CharDriverState *s, const uint8_t *buf, int len)
|
|
{
|
|
return s->chr_write(s, buf, len);
|
|
}
|
|
|
|
int qemu_chr_fe_ioctl(CharDriverState *s, int cmd, void *arg)
|
|
{
|
|
if (!s->chr_ioctl)
|
|
return -ENOTSUP;
|
|
return s->chr_ioctl(s, cmd, arg);
|
|
}
|
|
|
|
int qemu_chr_be_can_write(CharDriverState *s)
|
|
{
|
|
if (!s->chr_can_read)
|
|
return 0;
|
|
return s->chr_can_read(s->handler_opaque);
|
|
}
|
|
|
|
void qemu_chr_be_write(CharDriverState *s, uint8_t *buf, int len)
|
|
{
|
|
s->chr_read(s->handler_opaque, buf, len);
|
|
}
|
|
|
|
int qemu_chr_fe_get_msgfd(CharDriverState *s)
|
|
{
|
|
return s->get_msgfd ? s->get_msgfd(s) : -1;
|
|
}
|
|
|
|
int qemu_chr_add_client(CharDriverState *s, int fd)
|
|
{
|
|
return s->chr_add_client ? s->chr_add_client(s, fd) : -1;
|
|
}
|
|
|
|
void qemu_chr_accept_input(CharDriverState *s)
|
|
{
|
|
if (s->chr_accept_input)
|
|
s->chr_accept_input(s);
|
|
}
|
|
|
|
void qemu_chr_fe_printf(CharDriverState *s, const char *fmt, ...)
|
|
{
|
|
char buf[READ_BUF_LEN];
|
|
va_list ap;
|
|
va_start(ap, fmt);
|
|
vsnprintf(buf, sizeof(buf), fmt, ap);
|
|
qemu_chr_fe_write(s, (uint8_t *)buf, strlen(buf));
|
|
va_end(ap);
|
|
}
|
|
|
|
void qemu_chr_add_handlers(CharDriverState *s,
|
|
IOCanReadHandler *fd_can_read,
|
|
IOReadHandler *fd_read,
|
|
IOEventHandler *fd_event,
|
|
void *opaque)
|
|
{
|
|
if (!opaque && !fd_can_read && !fd_read && !fd_event) {
|
|
/* chr driver being released. */
|
|
++s->avail_connections;
|
|
}
|
|
s->chr_can_read = fd_can_read;
|
|
s->chr_read = fd_read;
|
|
s->chr_event = fd_event;
|
|
s->handler_opaque = opaque;
|
|
if (s->chr_update_read_handler)
|
|
s->chr_update_read_handler(s);
|
|
|
|
/* We're connecting to an already opened device, so let's make sure we
|
|
also get the open event */
|
|
if (s->opened) {
|
|
qemu_chr_generic_open(s);
|
|
}
|
|
}
|
|
|
|
static int null_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
|
|
{
|
|
return len;
|
|
}
|
|
|
|
static int qemu_chr_open_null(QemuOpts *opts, CharDriverState **_chr)
|
|
{
|
|
CharDriverState *chr;
|
|
|
|
chr = g_malloc0(sizeof(CharDriverState));
|
|
chr->chr_write = null_chr_write;
|
|
|
|
*_chr= chr;
|
|
return 0;
|
|
}
|
|
|
|
/* MUX driver for serial I/O splitting */
|
|
#define MAX_MUX 4
|
|
#define MUX_BUFFER_SIZE 32 /* Must be a power of 2. */
|
|
#define MUX_BUFFER_MASK (MUX_BUFFER_SIZE - 1)
|
|
typedef struct {
|
|
IOCanReadHandler *chr_can_read[MAX_MUX];
|
|
IOReadHandler *chr_read[MAX_MUX];
|
|
IOEventHandler *chr_event[MAX_MUX];
|
|
void *ext_opaque[MAX_MUX];
|
|
CharDriverState *drv;
|
|
int focus;
|
|
int mux_cnt;
|
|
int term_got_escape;
|
|
int max_size;
|
|
/* Intermediate input buffer allows to catch escape sequences even if the
|
|
currently active device is not accepting any input - but only until it
|
|
is full as well. */
|
|
unsigned char buffer[MAX_MUX][MUX_BUFFER_SIZE];
|
|
int prod[MAX_MUX];
|
|
int cons[MAX_MUX];
|
|
int timestamps;
|
|
int linestart;
|
|
int64_t timestamps_start;
|
|
} MuxDriver;
|
|
|
|
|
|
static int mux_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
|
|
{
|
|
MuxDriver *d = chr->opaque;
|
|
int ret;
|
|
if (!d->timestamps) {
|
|
ret = d->drv->chr_write(d->drv, buf, len);
|
|
} else {
|
|
int i;
|
|
|
|
ret = 0;
|
|
for (i = 0; i < len; i++) {
|
|
if (d->linestart) {
|
|
char buf1[64];
|
|
int64_t ti;
|
|
int secs;
|
|
|
|
ti = qemu_get_clock_ms(rt_clock);
|
|
if (d->timestamps_start == -1)
|
|
d->timestamps_start = ti;
|
|
ti -= d->timestamps_start;
|
|
secs = ti / 1000;
|
|
snprintf(buf1, sizeof(buf1),
|
|
"[%02d:%02d:%02d.%03d] ",
|
|
secs / 3600,
|
|
(secs / 60) % 60,
|
|
secs % 60,
|
|
(int)(ti % 1000));
|
|
d->drv->chr_write(d->drv, (uint8_t *)buf1, strlen(buf1));
|
|
d->linestart = 0;
|
|
}
|
|
ret += d->drv->chr_write(d->drv, buf+i, 1);
|
|
if (buf[i] == '\n') {
|
|
d->linestart = 1;
|
|
}
|
|
}
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
static const char * const mux_help[] = {
|
|
"% h print this help\n\r",
|
|
"% x exit emulator\n\r",
|
|
"% s save disk data back to file (if -snapshot)\n\r",
|
|
"% t toggle console timestamps\n\r"
|
|
"% b send break (magic sysrq)\n\r",
|
|
"% c switch between console and monitor\n\r",
|
|
"% % sends %\n\r",
|
|
NULL
|
|
};
|
|
|
|
int term_escape_char = 0x01; /* ctrl-a is used for escape */
|
|
static void mux_print_help(CharDriverState *chr)
|
|
{
|
|
int i, j;
|
|
char ebuf[15] = "Escape-Char";
|
|
char cbuf[50] = "\n\r";
|
|
|
|
if (term_escape_char > 0 && term_escape_char < 26) {
|
|
snprintf(cbuf, sizeof(cbuf), "\n\r");
|
|
snprintf(ebuf, sizeof(ebuf), "C-%c", term_escape_char - 1 + 'a');
|
|
} else {
|
|
snprintf(cbuf, sizeof(cbuf),
|
|
"\n\rEscape-Char set to Ascii: 0x%02x\n\r\n\r",
|
|
term_escape_char);
|
|
}
|
|
chr->chr_write(chr, (uint8_t *)cbuf, strlen(cbuf));
|
|
for (i = 0; mux_help[i] != NULL; i++) {
|
|
for (j=0; mux_help[i][j] != '\0'; j++) {
|
|
if (mux_help[i][j] == '%')
|
|
chr->chr_write(chr, (uint8_t *)ebuf, strlen(ebuf));
|
|
else
|
|
chr->chr_write(chr, (uint8_t *)&mux_help[i][j], 1);
|
|
}
|
|
}
|
|
}
|
|
|
|
static void mux_chr_send_event(MuxDriver *d, int mux_nr, int event)
|
|
{
|
|
if (d->chr_event[mux_nr])
|
|
d->chr_event[mux_nr](d->ext_opaque[mux_nr], event);
|
|
}
|
|
|
|
static int mux_proc_byte(CharDriverState *chr, MuxDriver *d, int ch)
|
|
{
|
|
if (d->term_got_escape) {
|
|
d->term_got_escape = 0;
|
|
if (ch == term_escape_char)
|
|
goto send_char;
|
|
switch(ch) {
|
|
case '?':
|
|
case 'h':
|
|
mux_print_help(chr);
|
|
break;
|
|
case 'x':
|
|
{
|
|
const char *term = "QEMU: Terminated\n\r";
|
|
chr->chr_write(chr,(uint8_t *)term,strlen(term));
|
|
exit(0);
|
|
break;
|
|
}
|
|
case 's':
|
|
bdrv_commit_all();
|
|
break;
|
|
case 'b':
|
|
qemu_chr_event(chr, CHR_EVENT_BREAK);
|
|
break;
|
|
case 'c':
|
|
/* Switch to the next registered device */
|
|
mux_chr_send_event(d, d->focus, CHR_EVENT_MUX_OUT);
|
|
d->focus++;
|
|
if (d->focus >= d->mux_cnt)
|
|
d->focus = 0;
|
|
mux_chr_send_event(d, d->focus, CHR_EVENT_MUX_IN);
|
|
break;
|
|
case 't':
|
|
d->timestamps = !d->timestamps;
|
|
d->timestamps_start = -1;
|
|
d->linestart = 0;
|
|
break;
|
|
}
|
|
} else if (ch == term_escape_char) {
|
|
d->term_got_escape = 1;
|
|
} else {
|
|
send_char:
|
|
return 1;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static void mux_chr_accept_input(CharDriverState *chr)
|
|
{
|
|
MuxDriver *d = chr->opaque;
|
|
int m = d->focus;
|
|
|
|
while (d->prod[m] != d->cons[m] &&
|
|
d->chr_can_read[m] &&
|
|
d->chr_can_read[m](d->ext_opaque[m])) {
|
|
d->chr_read[m](d->ext_opaque[m],
|
|
&d->buffer[m][d->cons[m]++ & MUX_BUFFER_MASK], 1);
|
|
}
|
|
}
|
|
|
|
static int mux_chr_can_read(void *opaque)
|
|
{
|
|
CharDriverState *chr = opaque;
|
|
MuxDriver *d = chr->opaque;
|
|
int m = d->focus;
|
|
|
|
if ((d->prod[m] - d->cons[m]) < MUX_BUFFER_SIZE)
|
|
return 1;
|
|
if (d->chr_can_read[m])
|
|
return d->chr_can_read[m](d->ext_opaque[m]);
|
|
return 0;
|
|
}
|
|
|
|
static void mux_chr_read(void *opaque, const uint8_t *buf, int size)
|
|
{
|
|
CharDriverState *chr = opaque;
|
|
MuxDriver *d = chr->opaque;
|
|
int m = d->focus;
|
|
int i;
|
|
|
|
mux_chr_accept_input (opaque);
|
|
|
|
for(i = 0; i < size; i++)
|
|
if (mux_proc_byte(chr, d, buf[i])) {
|
|
if (d->prod[m] == d->cons[m] &&
|
|
d->chr_can_read[m] &&
|
|
d->chr_can_read[m](d->ext_opaque[m]))
|
|
d->chr_read[m](d->ext_opaque[m], &buf[i], 1);
|
|
else
|
|
d->buffer[m][d->prod[m]++ & MUX_BUFFER_MASK] = buf[i];
|
|
}
|
|
}
|
|
|
|
static void mux_chr_event(void *opaque, int event)
|
|
{
|
|
CharDriverState *chr = opaque;
|
|
MuxDriver *d = chr->opaque;
|
|
int i;
|
|
|
|
/* Send the event to all registered listeners */
|
|
for (i = 0; i < d->mux_cnt; i++)
|
|
mux_chr_send_event(d, i, event);
|
|
}
|
|
|
|
static void mux_chr_update_read_handler(CharDriverState *chr)
|
|
{
|
|
MuxDriver *d = chr->opaque;
|
|
|
|
if (d->mux_cnt >= MAX_MUX) {
|
|
fprintf(stderr, "Cannot add I/O handlers, MUX array is full\n");
|
|
return;
|
|
}
|
|
d->ext_opaque[d->mux_cnt] = chr->handler_opaque;
|
|
d->chr_can_read[d->mux_cnt] = chr->chr_can_read;
|
|
d->chr_read[d->mux_cnt] = chr->chr_read;
|
|
d->chr_event[d->mux_cnt] = chr->chr_event;
|
|
/* Fix up the real driver with mux routines */
|
|
if (d->mux_cnt == 0) {
|
|
qemu_chr_add_handlers(d->drv, mux_chr_can_read, mux_chr_read,
|
|
mux_chr_event, chr);
|
|
}
|
|
if (d->focus != -1) {
|
|
mux_chr_send_event(d, d->focus, CHR_EVENT_MUX_OUT);
|
|
}
|
|
d->focus = d->mux_cnt;
|
|
d->mux_cnt++;
|
|
mux_chr_send_event(d, d->focus, CHR_EVENT_MUX_IN);
|
|
}
|
|
|
|
static CharDriverState *qemu_chr_open_mux(CharDriverState *drv)
|
|
{
|
|
CharDriverState *chr;
|
|
MuxDriver *d;
|
|
|
|
chr = g_malloc0(sizeof(CharDriverState));
|
|
d = g_malloc0(sizeof(MuxDriver));
|
|
|
|
chr->opaque = d;
|
|
d->drv = drv;
|
|
d->focus = -1;
|
|
chr->chr_write = mux_chr_write;
|
|
chr->chr_update_read_handler = mux_chr_update_read_handler;
|
|
chr->chr_accept_input = mux_chr_accept_input;
|
|
/* Frontend guest-open / -close notification is not support with muxes */
|
|
chr->chr_guest_open = NULL;
|
|
chr->chr_guest_close = NULL;
|
|
|
|
/* Muxes are always open on creation */
|
|
qemu_chr_generic_open(chr);
|
|
|
|
return chr;
|
|
}
|
|
|
|
|
|
#ifdef _WIN32
|
|
int send_all(int fd, const void *buf, int len1)
|
|
{
|
|
int ret, len;
|
|
|
|
len = len1;
|
|
while (len > 0) {
|
|
ret = send(fd, buf, len, 0);
|
|
if (ret < 0) {
|
|
errno = WSAGetLastError();
|
|
if (errno != WSAEWOULDBLOCK) {
|
|
return -1;
|
|
}
|
|
} else if (ret == 0) {
|
|
break;
|
|
} else {
|
|
buf += ret;
|
|
len -= ret;
|
|
}
|
|
}
|
|
return len1 - len;
|
|
}
|
|
|
|
#else
|
|
|
|
int send_all(int fd, const void *_buf, int len1)
|
|
{
|
|
int ret, len;
|
|
const uint8_t *buf = _buf;
|
|
|
|
len = len1;
|
|
while (len > 0) {
|
|
ret = write(fd, buf, len);
|
|
if (ret < 0) {
|
|
if (errno != EINTR && errno != EAGAIN)
|
|
return -1;
|
|
} else if (ret == 0) {
|
|
break;
|
|
} else {
|
|
buf += ret;
|
|
len -= ret;
|
|
}
|
|
}
|
|
return len1 - len;
|
|
}
|
|
#endif /* !_WIN32 */
|
|
|
|
#ifndef _WIN32
|
|
|
|
typedef struct {
|
|
int fd_in, fd_out;
|
|
int max_size;
|
|
} FDCharDriver;
|
|
|
|
#define STDIO_MAX_CLIENTS 1
|
|
static int stdio_nb_clients = 0;
|
|
|
|
static int fd_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
|
|
{
|
|
FDCharDriver *s = chr->opaque;
|
|
return send_all(s->fd_out, buf, len);
|
|
}
|
|
|
|
static int fd_chr_read_poll(void *opaque)
|
|
{
|
|
CharDriverState *chr = opaque;
|
|
FDCharDriver *s = chr->opaque;
|
|
|
|
s->max_size = qemu_chr_be_can_write(chr);
|
|
return s->max_size;
|
|
}
|
|
|
|
static void fd_chr_read(void *opaque)
|
|
{
|
|
CharDriverState *chr = opaque;
|
|
FDCharDriver *s = chr->opaque;
|
|
int size, len;
|
|
uint8_t buf[READ_BUF_LEN];
|
|
|
|
len = sizeof(buf);
|
|
if (len > s->max_size)
|
|
len = s->max_size;
|
|
if (len == 0)
|
|
return;
|
|
size = read(s->fd_in, buf, len);
|
|
if (size == 0) {
|
|
/* FD has been closed. Remove it from the active list. */
|
|
qemu_set_fd_handler2(s->fd_in, NULL, NULL, NULL, NULL);
|
|
qemu_chr_event(chr, CHR_EVENT_CLOSED);
|
|
return;
|
|
}
|
|
if (size > 0) {
|
|
qemu_chr_be_write(chr, buf, size);
|
|
}
|
|
}
|
|
|
|
static void fd_chr_update_read_handler(CharDriverState *chr)
|
|
{
|
|
FDCharDriver *s = chr->opaque;
|
|
|
|
if (s->fd_in >= 0) {
|
|
if (display_type == DT_NOGRAPHIC && s->fd_in == 0) {
|
|
} else {
|
|
qemu_set_fd_handler2(s->fd_in, fd_chr_read_poll,
|
|
fd_chr_read, NULL, chr);
|
|
}
|
|
}
|
|
}
|
|
|
|
static void fd_chr_close(struct CharDriverState *chr)
|
|
{
|
|
FDCharDriver *s = chr->opaque;
|
|
|
|
if (s->fd_in >= 0) {
|
|
if (display_type == DT_NOGRAPHIC && s->fd_in == 0) {
|
|
} else {
|
|
qemu_set_fd_handler2(s->fd_in, NULL, NULL, NULL, NULL);
|
|
}
|
|
}
|
|
|
|
g_free(s);
|
|
qemu_chr_event(chr, CHR_EVENT_CLOSED);
|
|
}
|
|
|
|
/* open a character device to a unix fd */
|
|
static CharDriverState *qemu_chr_open_fd(int fd_in, int fd_out)
|
|
{
|
|
CharDriverState *chr;
|
|
FDCharDriver *s;
|
|
|
|
chr = g_malloc0(sizeof(CharDriverState));
|
|
s = g_malloc0(sizeof(FDCharDriver));
|
|
s->fd_in = fd_in;
|
|
s->fd_out = fd_out;
|
|
chr->opaque = s;
|
|
chr->chr_write = fd_chr_write;
|
|
chr->chr_update_read_handler = fd_chr_update_read_handler;
|
|
chr->chr_close = fd_chr_close;
|
|
|
|
qemu_chr_generic_open(chr);
|
|
|
|
return chr;
|
|
}
|
|
|
|
static int qemu_chr_open_file_out(QemuOpts *opts, CharDriverState **_chr)
|
|
{
|
|
int fd_out;
|
|
|
|
TFR(fd_out = qemu_open(qemu_opt_get(opts, "path"),
|
|
O_WRONLY | O_TRUNC | O_CREAT | O_BINARY, 0666));
|
|
if (fd_out < 0) {
|
|
return -errno;
|
|
}
|
|
|
|
*_chr = qemu_chr_open_fd(-1, fd_out);
|
|
return 0;
|
|
}
|
|
|
|
static int qemu_chr_open_pipe(QemuOpts *opts, CharDriverState **_chr)
|
|
{
|
|
int fd_in, fd_out;
|
|
char filename_in[256], filename_out[256];
|
|
const char *filename = qemu_opt_get(opts, "path");
|
|
|
|
if (filename == NULL) {
|
|
fprintf(stderr, "chardev: pipe: no filename given\n");
|
|
return -EINVAL;
|
|
}
|
|
|
|
snprintf(filename_in, 256, "%s.in", filename);
|
|
snprintf(filename_out, 256, "%s.out", filename);
|
|
TFR(fd_in = qemu_open(filename_in, O_RDWR | O_BINARY));
|
|
TFR(fd_out = qemu_open(filename_out, O_RDWR | O_BINARY));
|
|
if (fd_in < 0 || fd_out < 0) {
|
|
if (fd_in >= 0)
|
|
close(fd_in);
|
|
if (fd_out >= 0)
|
|
close(fd_out);
|
|
TFR(fd_in = fd_out = qemu_open(filename, O_RDWR | O_BINARY));
|
|
if (fd_in < 0) {
|
|
return -errno;
|
|
}
|
|
}
|
|
|
|
*_chr = qemu_chr_open_fd(fd_in, fd_out);
|
|
return 0;
|
|
}
|
|
|
|
|
|
/* for STDIO, we handle the case where several clients use it
|
|
(nographic mode) */
|
|
|
|
#define TERM_FIFO_MAX_SIZE 1
|
|
|
|
static uint8_t term_fifo[TERM_FIFO_MAX_SIZE];
|
|
static int term_fifo_size;
|
|
|
|
static int stdio_read_poll(void *opaque)
|
|
{
|
|
CharDriverState *chr = opaque;
|
|
|
|
/* try to flush the queue if needed */
|
|
if (term_fifo_size != 0 && qemu_chr_be_can_write(chr) > 0) {
|
|
qemu_chr_be_write(chr, term_fifo, 1);
|
|
term_fifo_size = 0;
|
|
}
|
|
/* see if we can absorb more chars */
|
|
if (term_fifo_size == 0)
|
|
return 1;
|
|
else
|
|
return 0;
|
|
}
|
|
|
|
static void stdio_read(void *opaque)
|
|
{
|
|
int size;
|
|
uint8_t buf[1];
|
|
CharDriverState *chr = opaque;
|
|
|
|
size = read(0, buf, 1);
|
|
if (size == 0) {
|
|
/* stdin has been closed. Remove it from the active list. */
|
|
qemu_set_fd_handler2(0, NULL, NULL, NULL, NULL);
|
|
qemu_chr_event(chr, CHR_EVENT_CLOSED);
|
|
return;
|
|
}
|
|
if (size > 0) {
|
|
if (qemu_chr_be_can_write(chr) > 0) {
|
|
qemu_chr_be_write(chr, buf, 1);
|
|
} else if (term_fifo_size == 0) {
|
|
term_fifo[term_fifo_size++] = buf[0];
|
|
}
|
|
}
|
|
}
|
|
|
|
/* init terminal so that we can grab keys */
|
|
static struct termios oldtty;
|
|
static int old_fd0_flags;
|
|
static bool stdio_allow_signal;
|
|
|
|
static void term_exit(void)
|
|
{
|
|
tcsetattr (0, TCSANOW, &oldtty);
|
|
fcntl(0, F_SETFL, old_fd0_flags);
|
|
}
|
|
|
|
static void qemu_chr_set_echo_stdio(CharDriverState *chr, bool echo)
|
|
{
|
|
struct termios tty;
|
|
|
|
tty = oldtty;
|
|
if (!echo) {
|
|
tty.c_iflag &= ~(IGNBRK|BRKINT|PARMRK|ISTRIP
|
|
|INLCR|IGNCR|ICRNL|IXON);
|
|
tty.c_oflag |= OPOST;
|
|
tty.c_lflag &= ~(ECHO|ECHONL|ICANON|IEXTEN);
|
|
tty.c_cflag &= ~(CSIZE|PARENB);
|
|
tty.c_cflag |= CS8;
|
|
tty.c_cc[VMIN] = 1;
|
|
tty.c_cc[VTIME] = 0;
|
|
}
|
|
/* if graphical mode, we allow Ctrl-C handling */
|
|
if (!stdio_allow_signal)
|
|
tty.c_lflag &= ~ISIG;
|
|
|
|
tcsetattr (0, TCSANOW, &tty);
|
|
}
|
|
|
|
static void qemu_chr_close_stdio(struct CharDriverState *chr)
|
|
{
|
|
term_exit();
|
|
stdio_nb_clients--;
|
|
qemu_set_fd_handler2(0, NULL, NULL, NULL, NULL);
|
|
fd_chr_close(chr);
|
|
}
|
|
|
|
static int qemu_chr_open_stdio(QemuOpts *opts, CharDriverState **_chr)
|
|
{
|
|
CharDriverState *chr;
|
|
|
|
if (stdio_nb_clients >= STDIO_MAX_CLIENTS) {
|
|
return -EBUSY;
|
|
}
|
|
|
|
if (stdio_nb_clients == 0) {
|
|
old_fd0_flags = fcntl(0, F_GETFL);
|
|
tcgetattr (0, &oldtty);
|
|
fcntl(0, F_SETFL, O_NONBLOCK);
|
|
atexit(term_exit);
|
|
}
|
|
|
|
chr = qemu_chr_open_fd(0, 1);
|
|
chr->chr_close = qemu_chr_close_stdio;
|
|
chr->chr_set_echo = qemu_chr_set_echo_stdio;
|
|
qemu_set_fd_handler2(0, stdio_read_poll, stdio_read, NULL, chr);
|
|
stdio_nb_clients++;
|
|
stdio_allow_signal = qemu_opt_get_bool(opts, "signal",
|
|
display_type != DT_NOGRAPHIC);
|
|
qemu_chr_fe_set_echo(chr, false);
|
|
|
|
*_chr = chr;
|
|
return 0;
|
|
}
|
|
|
|
#ifdef __sun__
|
|
/* Once Solaris has openpty(), this is going to be removed. */
|
|
static int openpty(int *amaster, int *aslave, char *name,
|
|
struct termios *termp, struct winsize *winp)
|
|
{
|
|
const char *slave;
|
|
int mfd = -1, sfd = -1;
|
|
|
|
*amaster = *aslave = -1;
|
|
|
|
mfd = open("/dev/ptmx", O_RDWR | O_NOCTTY);
|
|
if (mfd < 0)
|
|
goto err;
|
|
|
|
if (grantpt(mfd) == -1 || unlockpt(mfd) == -1)
|
|
goto err;
|
|
|
|
if ((slave = ptsname(mfd)) == NULL)
|
|
goto err;
|
|
|
|
if ((sfd = open(slave, O_RDONLY | O_NOCTTY)) == -1)
|
|
goto err;
|
|
|
|
if (ioctl(sfd, I_PUSH, "ptem") == -1 ||
|
|
(termp != NULL && tcgetattr(sfd, termp) < 0))
|
|
goto err;
|
|
|
|
if (amaster)
|
|
*amaster = mfd;
|
|
if (aslave)
|
|
*aslave = sfd;
|
|
if (winp)
|
|
ioctl(sfd, TIOCSWINSZ, winp);
|
|
|
|
return 0;
|
|
|
|
err:
|
|
if (sfd != -1)
|
|
close(sfd);
|
|
close(mfd);
|
|
return -1;
|
|
}
|
|
|
|
static void cfmakeraw (struct termios *termios_p)
|
|
{
|
|
termios_p->c_iflag &=
|
|
~(IGNBRK|BRKINT|PARMRK|ISTRIP|INLCR|IGNCR|ICRNL|IXON);
|
|
termios_p->c_oflag &= ~OPOST;
|
|
termios_p->c_lflag &= ~(ECHO|ECHONL|ICANON|ISIG|IEXTEN);
|
|
termios_p->c_cflag &= ~(CSIZE|PARENB);
|
|
termios_p->c_cflag |= CS8;
|
|
|
|
termios_p->c_cc[VMIN] = 0;
|
|
termios_p->c_cc[VTIME] = 0;
|
|
}
|
|
#endif
|
|
|
|
#if defined(__linux__) || defined(__sun__) || defined(__FreeBSD__) \
|
|
|| defined(__NetBSD__) || defined(__OpenBSD__) || defined(__DragonFly__) \
|
|
|| defined(__GLIBC__)
|
|
|
|
typedef struct {
|
|
int fd;
|
|
int connected;
|
|
int polling;
|
|
int read_bytes;
|
|
QEMUTimer *timer;
|
|
} PtyCharDriver;
|
|
|
|
static void pty_chr_update_read_handler(CharDriverState *chr);
|
|
static void pty_chr_state(CharDriverState *chr, int connected);
|
|
|
|
static int pty_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
|
|
{
|
|
PtyCharDriver *s = chr->opaque;
|
|
|
|
if (!s->connected) {
|
|
/* guest sends data, check for (re-)connect */
|
|
pty_chr_update_read_handler(chr);
|
|
return 0;
|
|
}
|
|
return send_all(s->fd, buf, len);
|
|
}
|
|
|
|
static int pty_chr_read_poll(void *opaque)
|
|
{
|
|
CharDriverState *chr = opaque;
|
|
PtyCharDriver *s = chr->opaque;
|
|
|
|
s->read_bytes = qemu_chr_be_can_write(chr);
|
|
return s->read_bytes;
|
|
}
|
|
|
|
static void pty_chr_read(void *opaque)
|
|
{
|
|
CharDriverState *chr = opaque;
|
|
PtyCharDriver *s = chr->opaque;
|
|
int size, len;
|
|
uint8_t buf[READ_BUF_LEN];
|
|
|
|
len = sizeof(buf);
|
|
if (len > s->read_bytes)
|
|
len = s->read_bytes;
|
|
if (len == 0)
|
|
return;
|
|
size = read(s->fd, buf, len);
|
|
if ((size == -1 && errno == EIO) ||
|
|
(size == 0)) {
|
|
pty_chr_state(chr, 0);
|
|
return;
|
|
}
|
|
if (size > 0) {
|
|
pty_chr_state(chr, 1);
|
|
qemu_chr_be_write(chr, buf, size);
|
|
}
|
|
}
|
|
|
|
static void pty_chr_update_read_handler(CharDriverState *chr)
|
|
{
|
|
PtyCharDriver *s = chr->opaque;
|
|
|
|
qemu_set_fd_handler2(s->fd, pty_chr_read_poll,
|
|
pty_chr_read, NULL, chr);
|
|
s->polling = 1;
|
|
/*
|
|
* Short timeout here: just need wait long enougth that qemu makes
|
|
* it through the poll loop once. When reconnected we want a
|
|
* short timeout so we notice it almost instantly. Otherwise
|
|
* read() gives us -EIO instantly, making pty_chr_state() reset the
|
|
* timeout to the normal (much longer) poll interval before the
|
|
* timer triggers.
|
|
*/
|
|
qemu_mod_timer(s->timer, qemu_get_clock_ms(rt_clock) + 10);
|
|
}
|
|
|
|
static void pty_chr_state(CharDriverState *chr, int connected)
|
|
{
|
|
PtyCharDriver *s = chr->opaque;
|
|
|
|
if (!connected) {
|
|
qemu_set_fd_handler2(s->fd, NULL, NULL, NULL, NULL);
|
|
s->connected = 0;
|
|
s->polling = 0;
|
|
/* (re-)connect poll interval for idle guests: once per second.
|
|
* We check more frequently in case the guests sends data to
|
|
* the virtual device linked to our pty. */
|
|
qemu_mod_timer(s->timer, qemu_get_clock_ms(rt_clock) + 1000);
|
|
} else {
|
|
if (!s->connected)
|
|
qemu_chr_generic_open(chr);
|
|
s->connected = 1;
|
|
}
|
|
}
|
|
|
|
static void pty_chr_timer(void *opaque)
|
|
{
|
|
struct CharDriverState *chr = opaque;
|
|
PtyCharDriver *s = chr->opaque;
|
|
|
|
if (s->connected)
|
|
return;
|
|
if (s->polling) {
|
|
/* If we arrive here without polling being cleared due
|
|
* read returning -EIO, then we are (re-)connected */
|
|
pty_chr_state(chr, 1);
|
|
return;
|
|
}
|
|
|
|
/* Next poll ... */
|
|
pty_chr_update_read_handler(chr);
|
|
}
|
|
|
|
static void pty_chr_close(struct CharDriverState *chr)
|
|
{
|
|
PtyCharDriver *s = chr->opaque;
|
|
|
|
qemu_set_fd_handler2(s->fd, NULL, NULL, NULL, NULL);
|
|
close(s->fd);
|
|
qemu_del_timer(s->timer);
|
|
qemu_free_timer(s->timer);
|
|
g_free(s);
|
|
qemu_chr_event(chr, CHR_EVENT_CLOSED);
|
|
}
|
|
|
|
static int qemu_chr_open_pty(QemuOpts *opts, CharDriverState **_chr)
|
|
{
|
|
CharDriverState *chr;
|
|
PtyCharDriver *s;
|
|
struct termios tty;
|
|
int slave_fd, len;
|
|
#if defined(__OpenBSD__) || defined(__DragonFly__)
|
|
char pty_name[PATH_MAX];
|
|
#define q_ptsname(x) pty_name
|
|
#else
|
|
char *pty_name = NULL;
|
|
#define q_ptsname(x) ptsname(x)
|
|
#endif
|
|
|
|
chr = g_malloc0(sizeof(CharDriverState));
|
|
s = g_malloc0(sizeof(PtyCharDriver));
|
|
|
|
if (openpty(&s->fd, &slave_fd, pty_name, NULL, NULL) < 0) {
|
|
return -errno;
|
|
}
|
|
|
|
/* Set raw attributes on the pty. */
|
|
tcgetattr(slave_fd, &tty);
|
|
cfmakeraw(&tty);
|
|
tcsetattr(slave_fd, TCSAFLUSH, &tty);
|
|
close(slave_fd);
|
|
|
|
len = strlen(q_ptsname(s->fd)) + 5;
|
|
chr->filename = g_malloc(len);
|
|
snprintf(chr->filename, len, "pty:%s", q_ptsname(s->fd));
|
|
qemu_opt_set(opts, "path", q_ptsname(s->fd));
|
|
fprintf(stderr, "char device redirected to %s\n", q_ptsname(s->fd));
|
|
|
|
chr->opaque = s;
|
|
chr->chr_write = pty_chr_write;
|
|
chr->chr_update_read_handler = pty_chr_update_read_handler;
|
|
chr->chr_close = pty_chr_close;
|
|
|
|
s->timer = qemu_new_timer_ms(rt_clock, pty_chr_timer, chr);
|
|
|
|
*_chr = chr;
|
|
return 0;
|
|
}
|
|
|
|
static void tty_serial_init(int fd, int speed,
|
|
int parity, int data_bits, int stop_bits)
|
|
{
|
|
struct termios tty;
|
|
speed_t spd;
|
|
|
|
#if 0
|
|
printf("tty_serial_init: speed=%d parity=%c data=%d stop=%d\n",
|
|
speed, parity, data_bits, stop_bits);
|
|
#endif
|
|
tcgetattr (fd, &tty);
|
|
|
|
#define check_speed(val) if (speed <= val) { spd = B##val; break; }
|
|
speed = speed * 10 / 11;
|
|
do {
|
|
check_speed(50);
|
|
check_speed(75);
|
|
check_speed(110);
|
|
check_speed(134);
|
|
check_speed(150);
|
|
check_speed(200);
|
|
check_speed(300);
|
|
check_speed(600);
|
|
check_speed(1200);
|
|
check_speed(1800);
|
|
check_speed(2400);
|
|
check_speed(4800);
|
|
check_speed(9600);
|
|
check_speed(19200);
|
|
check_speed(38400);
|
|
/* Non-Posix values follow. They may be unsupported on some systems. */
|
|
check_speed(57600);
|
|
check_speed(115200);
|
|
#ifdef B230400
|
|
check_speed(230400);
|
|
#endif
|
|
#ifdef B460800
|
|
check_speed(460800);
|
|
#endif
|
|
#ifdef B500000
|
|
check_speed(500000);
|
|
#endif
|
|
#ifdef B576000
|
|
check_speed(576000);
|
|
#endif
|
|
#ifdef B921600
|
|
check_speed(921600);
|
|
#endif
|
|
#ifdef B1000000
|
|
check_speed(1000000);
|
|
#endif
|
|
#ifdef B1152000
|
|
check_speed(1152000);
|
|
#endif
|
|
#ifdef B1500000
|
|
check_speed(1500000);
|
|
#endif
|
|
#ifdef B2000000
|
|
check_speed(2000000);
|
|
#endif
|
|
#ifdef B2500000
|
|
check_speed(2500000);
|
|
#endif
|
|
#ifdef B3000000
|
|
check_speed(3000000);
|
|
#endif
|
|
#ifdef B3500000
|
|
check_speed(3500000);
|
|
#endif
|
|
#ifdef B4000000
|
|
check_speed(4000000);
|
|
#endif
|
|
spd = B115200;
|
|
} while (0);
|
|
|
|
cfsetispeed(&tty, spd);
|
|
cfsetospeed(&tty, spd);
|
|
|
|
tty.c_iflag &= ~(IGNBRK|BRKINT|PARMRK|ISTRIP
|
|
|INLCR|IGNCR|ICRNL|IXON);
|
|
tty.c_oflag |= OPOST;
|
|
tty.c_lflag &= ~(ECHO|ECHONL|ICANON|IEXTEN|ISIG);
|
|
tty.c_cflag &= ~(CSIZE|PARENB|PARODD|CRTSCTS|CSTOPB);
|
|
switch(data_bits) {
|
|
default:
|
|
case 8:
|
|
tty.c_cflag |= CS8;
|
|
break;
|
|
case 7:
|
|
tty.c_cflag |= CS7;
|
|
break;
|
|
case 6:
|
|
tty.c_cflag |= CS6;
|
|
break;
|
|
case 5:
|
|
tty.c_cflag |= CS5;
|
|
break;
|
|
}
|
|
switch(parity) {
|
|
default:
|
|
case 'N':
|
|
break;
|
|
case 'E':
|
|
tty.c_cflag |= PARENB;
|
|
break;
|
|
case 'O':
|
|
tty.c_cflag |= PARENB | PARODD;
|
|
break;
|
|
}
|
|
if (stop_bits == 2)
|
|
tty.c_cflag |= CSTOPB;
|
|
|
|
tcsetattr (fd, TCSANOW, &tty);
|
|
}
|
|
|
|
static int tty_serial_ioctl(CharDriverState *chr, int cmd, void *arg)
|
|
{
|
|
FDCharDriver *s = chr->opaque;
|
|
|
|
switch(cmd) {
|
|
case CHR_IOCTL_SERIAL_SET_PARAMS:
|
|
{
|
|
QEMUSerialSetParams *ssp = arg;
|
|
tty_serial_init(s->fd_in, ssp->speed, ssp->parity,
|
|
ssp->data_bits, ssp->stop_bits);
|
|
}
|
|
break;
|
|
case CHR_IOCTL_SERIAL_SET_BREAK:
|
|
{
|
|
int enable = *(int *)arg;
|
|
if (enable)
|
|
tcsendbreak(s->fd_in, 1);
|
|
}
|
|
break;
|
|
case CHR_IOCTL_SERIAL_GET_TIOCM:
|
|
{
|
|
int sarg = 0;
|
|
int *targ = (int *)arg;
|
|
ioctl(s->fd_in, TIOCMGET, &sarg);
|
|
*targ = 0;
|
|
if (sarg & TIOCM_CTS)
|
|
*targ |= CHR_TIOCM_CTS;
|
|
if (sarg & TIOCM_CAR)
|
|
*targ |= CHR_TIOCM_CAR;
|
|
if (sarg & TIOCM_DSR)
|
|
*targ |= CHR_TIOCM_DSR;
|
|
if (sarg & TIOCM_RI)
|
|
*targ |= CHR_TIOCM_RI;
|
|
if (sarg & TIOCM_DTR)
|
|
*targ |= CHR_TIOCM_DTR;
|
|
if (sarg & TIOCM_RTS)
|
|
*targ |= CHR_TIOCM_RTS;
|
|
}
|
|
break;
|
|
case CHR_IOCTL_SERIAL_SET_TIOCM:
|
|
{
|
|
int sarg = *(int *)arg;
|
|
int targ = 0;
|
|
ioctl(s->fd_in, TIOCMGET, &targ);
|
|
targ &= ~(CHR_TIOCM_CTS | CHR_TIOCM_CAR | CHR_TIOCM_DSR
|
|
| CHR_TIOCM_RI | CHR_TIOCM_DTR | CHR_TIOCM_RTS);
|
|
if (sarg & CHR_TIOCM_CTS)
|
|
targ |= TIOCM_CTS;
|
|
if (sarg & CHR_TIOCM_CAR)
|
|
targ |= TIOCM_CAR;
|
|
if (sarg & CHR_TIOCM_DSR)
|
|
targ |= TIOCM_DSR;
|
|
if (sarg & CHR_TIOCM_RI)
|
|
targ |= TIOCM_RI;
|
|
if (sarg & CHR_TIOCM_DTR)
|
|
targ |= TIOCM_DTR;
|
|
if (sarg & CHR_TIOCM_RTS)
|
|
targ |= TIOCM_RTS;
|
|
ioctl(s->fd_in, TIOCMSET, &targ);
|
|
}
|
|
break;
|
|
default:
|
|
return -ENOTSUP;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static void qemu_chr_close_tty(CharDriverState *chr)
|
|
{
|
|
FDCharDriver *s = chr->opaque;
|
|
int fd = -1;
|
|
|
|
if (s) {
|
|
fd = s->fd_in;
|
|
}
|
|
|
|
fd_chr_close(chr);
|
|
|
|
if (fd >= 0) {
|
|
close(fd);
|
|
}
|
|
}
|
|
|
|
static int qemu_chr_open_tty(QemuOpts *opts, CharDriverState **_chr)
|
|
{
|
|
const char *filename = qemu_opt_get(opts, "path");
|
|
CharDriverState *chr;
|
|
int fd;
|
|
|
|
TFR(fd = qemu_open(filename, O_RDWR | O_NONBLOCK));
|
|
if (fd < 0) {
|
|
return -errno;
|
|
}
|
|
tty_serial_init(fd, 115200, 'N', 8, 1);
|
|
chr = qemu_chr_open_fd(fd, fd);
|
|
chr->chr_ioctl = tty_serial_ioctl;
|
|
chr->chr_close = qemu_chr_close_tty;
|
|
|
|
*_chr = chr;
|
|
return 0;
|
|
}
|
|
#else /* ! __linux__ && ! __sun__ */
|
|
static int qemu_chr_open_pty(QemuOpts *opts, CharDriverState **_chr)
|
|
{
|
|
return -ENOTSUP;
|
|
}
|
|
#endif /* __linux__ || __sun__ */
|
|
|
|
#if defined(__linux__)
|
|
typedef struct {
|
|
int fd;
|
|
int mode;
|
|
} ParallelCharDriver;
|
|
|
|
static int pp_hw_mode(ParallelCharDriver *s, uint16_t mode)
|
|
{
|
|
if (s->mode != mode) {
|
|
int m = mode;
|
|
if (ioctl(s->fd, PPSETMODE, &m) < 0)
|
|
return 0;
|
|
s->mode = mode;
|
|
}
|
|
return 1;
|
|
}
|
|
|
|
static int pp_ioctl(CharDriverState *chr, int cmd, void *arg)
|
|
{
|
|
ParallelCharDriver *drv = chr->opaque;
|
|
int fd = drv->fd;
|
|
uint8_t b;
|
|
|
|
switch(cmd) {
|
|
case CHR_IOCTL_PP_READ_DATA:
|
|
if (ioctl(fd, PPRDATA, &b) < 0)
|
|
return -ENOTSUP;
|
|
*(uint8_t *)arg = b;
|
|
break;
|
|
case CHR_IOCTL_PP_WRITE_DATA:
|
|
b = *(uint8_t *)arg;
|
|
if (ioctl(fd, PPWDATA, &b) < 0)
|
|
return -ENOTSUP;
|
|
break;
|
|
case CHR_IOCTL_PP_READ_CONTROL:
|
|
if (ioctl(fd, PPRCONTROL, &b) < 0)
|
|
return -ENOTSUP;
|
|
/* Linux gives only the lowest bits, and no way to know data
|
|
direction! For better compatibility set the fixed upper
|
|
bits. */
|
|
*(uint8_t *)arg = b | 0xc0;
|
|
break;
|
|
case CHR_IOCTL_PP_WRITE_CONTROL:
|
|
b = *(uint8_t *)arg;
|
|
if (ioctl(fd, PPWCONTROL, &b) < 0)
|
|
return -ENOTSUP;
|
|
break;
|
|
case CHR_IOCTL_PP_READ_STATUS:
|
|
if (ioctl(fd, PPRSTATUS, &b) < 0)
|
|
return -ENOTSUP;
|
|
*(uint8_t *)arg = b;
|
|
break;
|
|
case CHR_IOCTL_PP_DATA_DIR:
|
|
if (ioctl(fd, PPDATADIR, (int *)arg) < 0)
|
|
return -ENOTSUP;
|
|
break;
|
|
case CHR_IOCTL_PP_EPP_READ_ADDR:
|
|
if (pp_hw_mode(drv, IEEE1284_MODE_EPP|IEEE1284_ADDR)) {
|
|
struct ParallelIOArg *parg = arg;
|
|
int n = read(fd, parg->buffer, parg->count);
|
|
if (n != parg->count) {
|
|
return -EIO;
|
|
}
|
|
}
|
|
break;
|
|
case CHR_IOCTL_PP_EPP_READ:
|
|
if (pp_hw_mode(drv, IEEE1284_MODE_EPP)) {
|
|
struct ParallelIOArg *parg = arg;
|
|
int n = read(fd, parg->buffer, parg->count);
|
|
if (n != parg->count) {
|
|
return -EIO;
|
|
}
|
|
}
|
|
break;
|
|
case CHR_IOCTL_PP_EPP_WRITE_ADDR:
|
|
if (pp_hw_mode(drv, IEEE1284_MODE_EPP|IEEE1284_ADDR)) {
|
|
struct ParallelIOArg *parg = arg;
|
|
int n = write(fd, parg->buffer, parg->count);
|
|
if (n != parg->count) {
|
|
return -EIO;
|
|
}
|
|
}
|
|
break;
|
|
case CHR_IOCTL_PP_EPP_WRITE:
|
|
if (pp_hw_mode(drv, IEEE1284_MODE_EPP)) {
|
|
struct ParallelIOArg *parg = arg;
|
|
int n = write(fd, parg->buffer, parg->count);
|
|
if (n != parg->count) {
|
|
return -EIO;
|
|
}
|
|
}
|
|
break;
|
|
default:
|
|
return -ENOTSUP;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static void pp_close(CharDriverState *chr)
|
|
{
|
|
ParallelCharDriver *drv = chr->opaque;
|
|
int fd = drv->fd;
|
|
|
|
pp_hw_mode(drv, IEEE1284_MODE_COMPAT);
|
|
ioctl(fd, PPRELEASE);
|
|
close(fd);
|
|
g_free(drv);
|
|
qemu_chr_event(chr, CHR_EVENT_CLOSED);
|
|
}
|
|
|
|
static int qemu_chr_open_pp(QemuOpts *opts, CharDriverState **_chr)
|
|
{
|
|
const char *filename = qemu_opt_get(opts, "path");
|
|
CharDriverState *chr;
|
|
ParallelCharDriver *drv;
|
|
int fd;
|
|
|
|
TFR(fd = open(filename, O_RDWR));
|
|
if (fd < 0) {
|
|
return -errno;
|
|
}
|
|
|
|
if (ioctl(fd, PPCLAIM) < 0) {
|
|
close(fd);
|
|
return -errno;
|
|
}
|
|
|
|
drv = g_malloc0(sizeof(ParallelCharDriver));
|
|
drv->fd = fd;
|
|
drv->mode = IEEE1284_MODE_COMPAT;
|
|
|
|
chr = g_malloc0(sizeof(CharDriverState));
|
|
chr->chr_write = null_chr_write;
|
|
chr->chr_ioctl = pp_ioctl;
|
|
chr->chr_close = pp_close;
|
|
chr->opaque = drv;
|
|
|
|
qemu_chr_generic_open(chr);
|
|
|
|
*_chr = chr;
|
|
return 0;
|
|
}
|
|
#endif /* __linux__ */
|
|
|
|
#if defined(__FreeBSD__) || defined(__FreeBSD_kernel__) || defined(__DragonFly__)
|
|
static int pp_ioctl(CharDriverState *chr, int cmd, void *arg)
|
|
{
|
|
int fd = (int)(intptr_t)chr->opaque;
|
|
uint8_t b;
|
|
|
|
switch(cmd) {
|
|
case CHR_IOCTL_PP_READ_DATA:
|
|
if (ioctl(fd, PPIGDATA, &b) < 0)
|
|
return -ENOTSUP;
|
|
*(uint8_t *)arg = b;
|
|
break;
|
|
case CHR_IOCTL_PP_WRITE_DATA:
|
|
b = *(uint8_t *)arg;
|
|
if (ioctl(fd, PPISDATA, &b) < 0)
|
|
return -ENOTSUP;
|
|
break;
|
|
case CHR_IOCTL_PP_READ_CONTROL:
|
|
if (ioctl(fd, PPIGCTRL, &b) < 0)
|
|
return -ENOTSUP;
|
|
*(uint8_t *)arg = b;
|
|
break;
|
|
case CHR_IOCTL_PP_WRITE_CONTROL:
|
|
b = *(uint8_t *)arg;
|
|
if (ioctl(fd, PPISCTRL, &b) < 0)
|
|
return -ENOTSUP;
|
|
break;
|
|
case CHR_IOCTL_PP_READ_STATUS:
|
|
if (ioctl(fd, PPIGSTATUS, &b) < 0)
|
|
return -ENOTSUP;
|
|
*(uint8_t *)arg = b;
|
|
break;
|
|
default:
|
|
return -ENOTSUP;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static int qemu_chr_open_pp(QemuOpts *opts, CharDriverState **_chr)
|
|
{
|
|
const char *filename = qemu_opt_get(opts, "path");
|
|
CharDriverState *chr;
|
|
int fd;
|
|
|
|
fd = qemu_open(filename, O_RDWR);
|
|
if (fd < 0) {
|
|
return -errno;
|
|
}
|
|
|
|
chr = g_malloc0(sizeof(CharDriverState));
|
|
chr->opaque = (void *)(intptr_t)fd;
|
|
chr->chr_write = null_chr_write;
|
|
chr->chr_ioctl = pp_ioctl;
|
|
|
|
*_chr = chr;
|
|
return 0;
|
|
}
|
|
#endif
|
|
|
|
#else /* _WIN32 */
|
|
|
|
typedef struct {
|
|
int max_size;
|
|
HANDLE hcom, hrecv, hsend;
|
|
OVERLAPPED orecv, osend;
|
|
BOOL fpipe;
|
|
DWORD len;
|
|
} WinCharState;
|
|
|
|
#define NSENDBUF 2048
|
|
#define NRECVBUF 2048
|
|
#define MAXCONNECT 1
|
|
#define NTIMEOUT 5000
|
|
|
|
static int win_chr_poll(void *opaque);
|
|
static int win_chr_pipe_poll(void *opaque);
|
|
|
|
static void win_chr_close(CharDriverState *chr)
|
|
{
|
|
WinCharState *s = chr->opaque;
|
|
|
|
if (s->hsend) {
|
|
CloseHandle(s->hsend);
|
|
s->hsend = NULL;
|
|
}
|
|
if (s->hrecv) {
|
|
CloseHandle(s->hrecv);
|
|
s->hrecv = NULL;
|
|
}
|
|
if (s->hcom) {
|
|
CloseHandle(s->hcom);
|
|
s->hcom = NULL;
|
|
}
|
|
if (s->fpipe)
|
|
qemu_del_polling_cb(win_chr_pipe_poll, chr);
|
|
else
|
|
qemu_del_polling_cb(win_chr_poll, chr);
|
|
|
|
qemu_chr_event(chr, CHR_EVENT_CLOSED);
|
|
}
|
|
|
|
static int win_chr_init(CharDriverState *chr, const char *filename)
|
|
{
|
|
WinCharState *s = chr->opaque;
|
|
COMMCONFIG comcfg;
|
|
COMMTIMEOUTS cto = { 0, 0, 0, 0, 0};
|
|
COMSTAT comstat;
|
|
DWORD size;
|
|
DWORD err;
|
|
|
|
s->hsend = CreateEvent(NULL, TRUE, FALSE, NULL);
|
|
if (!s->hsend) {
|
|
fprintf(stderr, "Failed CreateEvent\n");
|
|
goto fail;
|
|
}
|
|
s->hrecv = CreateEvent(NULL, TRUE, FALSE, NULL);
|
|
if (!s->hrecv) {
|
|
fprintf(stderr, "Failed CreateEvent\n");
|
|
goto fail;
|
|
}
|
|
|
|
s->hcom = CreateFile(filename, GENERIC_READ|GENERIC_WRITE, 0, NULL,
|
|
OPEN_EXISTING, FILE_FLAG_OVERLAPPED, 0);
|
|
if (s->hcom == INVALID_HANDLE_VALUE) {
|
|
fprintf(stderr, "Failed CreateFile (%lu)\n", GetLastError());
|
|
s->hcom = NULL;
|
|
goto fail;
|
|
}
|
|
|
|
if (!SetupComm(s->hcom, NRECVBUF, NSENDBUF)) {
|
|
fprintf(stderr, "Failed SetupComm\n");
|
|
goto fail;
|
|
}
|
|
|
|
ZeroMemory(&comcfg, sizeof(COMMCONFIG));
|
|
size = sizeof(COMMCONFIG);
|
|
GetDefaultCommConfig(filename, &comcfg, &size);
|
|
comcfg.dcb.DCBlength = sizeof(DCB);
|
|
CommConfigDialog(filename, NULL, &comcfg);
|
|
|
|
if (!SetCommState(s->hcom, &comcfg.dcb)) {
|
|
fprintf(stderr, "Failed SetCommState\n");
|
|
goto fail;
|
|
}
|
|
|
|
if (!SetCommMask(s->hcom, EV_ERR)) {
|
|
fprintf(stderr, "Failed SetCommMask\n");
|
|
goto fail;
|
|
}
|
|
|
|
cto.ReadIntervalTimeout = MAXDWORD;
|
|
if (!SetCommTimeouts(s->hcom, &cto)) {
|
|
fprintf(stderr, "Failed SetCommTimeouts\n");
|
|
goto fail;
|
|
}
|
|
|
|
if (!ClearCommError(s->hcom, &err, &comstat)) {
|
|
fprintf(stderr, "Failed ClearCommError\n");
|
|
goto fail;
|
|
}
|
|
qemu_add_polling_cb(win_chr_poll, chr);
|
|
return 0;
|
|
|
|
fail:
|
|
win_chr_close(chr);
|
|
return -1;
|
|
}
|
|
|
|
static int win_chr_write(CharDriverState *chr, const uint8_t *buf, int len1)
|
|
{
|
|
WinCharState *s = chr->opaque;
|
|
DWORD len, ret, size, err;
|
|
|
|
len = len1;
|
|
ZeroMemory(&s->osend, sizeof(s->osend));
|
|
s->osend.hEvent = s->hsend;
|
|
while (len > 0) {
|
|
if (s->hsend)
|
|
ret = WriteFile(s->hcom, buf, len, &size, &s->osend);
|
|
else
|
|
ret = WriteFile(s->hcom, buf, len, &size, NULL);
|
|
if (!ret) {
|
|
err = GetLastError();
|
|
if (err == ERROR_IO_PENDING) {
|
|
ret = GetOverlappedResult(s->hcom, &s->osend, &size, TRUE);
|
|
if (ret) {
|
|
buf += size;
|
|
len -= size;
|
|
} else {
|
|
break;
|
|
}
|
|
} else {
|
|
break;
|
|
}
|
|
} else {
|
|
buf += size;
|
|
len -= size;
|
|
}
|
|
}
|
|
return len1 - len;
|
|
}
|
|
|
|
static int win_chr_read_poll(CharDriverState *chr)
|
|
{
|
|
WinCharState *s = chr->opaque;
|
|
|
|
s->max_size = qemu_chr_be_can_write(chr);
|
|
return s->max_size;
|
|
}
|
|
|
|
static void win_chr_readfile(CharDriverState *chr)
|
|
{
|
|
WinCharState *s = chr->opaque;
|
|
int ret, err;
|
|
uint8_t buf[READ_BUF_LEN];
|
|
DWORD size;
|
|
|
|
ZeroMemory(&s->orecv, sizeof(s->orecv));
|
|
s->orecv.hEvent = s->hrecv;
|
|
ret = ReadFile(s->hcom, buf, s->len, &size, &s->orecv);
|
|
if (!ret) {
|
|
err = GetLastError();
|
|
if (err == ERROR_IO_PENDING) {
|
|
ret = GetOverlappedResult(s->hcom, &s->orecv, &size, TRUE);
|
|
}
|
|
}
|
|
|
|
if (size > 0) {
|
|
qemu_chr_be_write(chr, buf, size);
|
|
}
|
|
}
|
|
|
|
static void win_chr_read(CharDriverState *chr)
|
|
{
|
|
WinCharState *s = chr->opaque;
|
|
|
|
if (s->len > s->max_size)
|
|
s->len = s->max_size;
|
|
if (s->len == 0)
|
|
return;
|
|
|
|
win_chr_readfile(chr);
|
|
}
|
|
|
|
static int win_chr_poll(void *opaque)
|
|
{
|
|
CharDriverState *chr = opaque;
|
|
WinCharState *s = chr->opaque;
|
|
COMSTAT status;
|
|
DWORD comerr;
|
|
|
|
ClearCommError(s->hcom, &comerr, &status);
|
|
if (status.cbInQue > 0) {
|
|
s->len = status.cbInQue;
|
|
win_chr_read_poll(chr);
|
|
win_chr_read(chr);
|
|
return 1;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static int qemu_chr_open_win(QemuOpts *opts, CharDriverState **_chr)
|
|
{
|
|
const char *filename = qemu_opt_get(opts, "path");
|
|
CharDriverState *chr;
|
|
WinCharState *s;
|
|
|
|
chr = g_malloc0(sizeof(CharDriverState));
|
|
s = g_malloc0(sizeof(WinCharState));
|
|
chr->opaque = s;
|
|
chr->chr_write = win_chr_write;
|
|
chr->chr_close = win_chr_close;
|
|
|
|
if (win_chr_init(chr, filename) < 0) {
|
|
free(s);
|
|
free(chr);
|
|
return -EIO;
|
|
}
|
|
qemu_chr_generic_open(chr);
|
|
|
|
*_chr = chr;
|
|
return 0;
|
|
}
|
|
|
|
static int win_chr_pipe_poll(void *opaque)
|
|
{
|
|
CharDriverState *chr = opaque;
|
|
WinCharState *s = chr->opaque;
|
|
DWORD size;
|
|
|
|
PeekNamedPipe(s->hcom, NULL, 0, NULL, &size, NULL);
|
|
if (size > 0) {
|
|
s->len = size;
|
|
win_chr_read_poll(chr);
|
|
win_chr_read(chr);
|
|
return 1;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static int win_chr_pipe_init(CharDriverState *chr, const char *filename)
|
|
{
|
|
WinCharState *s = chr->opaque;
|
|
OVERLAPPED ov;
|
|
int ret;
|
|
DWORD size;
|
|
char openname[256];
|
|
|
|
s->fpipe = TRUE;
|
|
|
|
s->hsend = CreateEvent(NULL, TRUE, FALSE, NULL);
|
|
if (!s->hsend) {
|
|
fprintf(stderr, "Failed CreateEvent\n");
|
|
goto fail;
|
|
}
|
|
s->hrecv = CreateEvent(NULL, TRUE, FALSE, NULL);
|
|
if (!s->hrecv) {
|
|
fprintf(stderr, "Failed CreateEvent\n");
|
|
goto fail;
|
|
}
|
|
|
|
snprintf(openname, sizeof(openname), "\\\\.\\pipe\\%s", filename);
|
|
s->hcom = CreateNamedPipe(openname, PIPE_ACCESS_DUPLEX | FILE_FLAG_OVERLAPPED,
|
|
PIPE_TYPE_BYTE | PIPE_READMODE_BYTE |
|
|
PIPE_WAIT,
|
|
MAXCONNECT, NSENDBUF, NRECVBUF, NTIMEOUT, NULL);
|
|
if (s->hcom == INVALID_HANDLE_VALUE) {
|
|
fprintf(stderr, "Failed CreateNamedPipe (%lu)\n", GetLastError());
|
|
s->hcom = NULL;
|
|
goto fail;
|
|
}
|
|
|
|
ZeroMemory(&ov, sizeof(ov));
|
|
ov.hEvent = CreateEvent(NULL, TRUE, FALSE, NULL);
|
|
ret = ConnectNamedPipe(s->hcom, &ov);
|
|
if (ret) {
|
|
fprintf(stderr, "Failed ConnectNamedPipe\n");
|
|
goto fail;
|
|
}
|
|
|
|
ret = GetOverlappedResult(s->hcom, &ov, &size, TRUE);
|
|
if (!ret) {
|
|
fprintf(stderr, "Failed GetOverlappedResult\n");
|
|
if (ov.hEvent) {
|
|
CloseHandle(ov.hEvent);
|
|
ov.hEvent = NULL;
|
|
}
|
|
goto fail;
|
|
}
|
|
|
|
if (ov.hEvent) {
|
|
CloseHandle(ov.hEvent);
|
|
ov.hEvent = NULL;
|
|
}
|
|
qemu_add_polling_cb(win_chr_pipe_poll, chr);
|
|
return 0;
|
|
|
|
fail:
|
|
win_chr_close(chr);
|
|
return -1;
|
|
}
|
|
|
|
|
|
static int qemu_chr_open_win_pipe(QemuOpts *opts, CharDriverState **_chr)
|
|
{
|
|
const char *filename = qemu_opt_get(opts, "path");
|
|
CharDriverState *chr;
|
|
WinCharState *s;
|
|
|
|
chr = g_malloc0(sizeof(CharDriverState));
|
|
s = g_malloc0(sizeof(WinCharState));
|
|
chr->opaque = s;
|
|
chr->chr_write = win_chr_write;
|
|
chr->chr_close = win_chr_close;
|
|
|
|
if (win_chr_pipe_init(chr, filename) < 0) {
|
|
free(s);
|
|
free(chr);
|
|
return -EIO;
|
|
}
|
|
qemu_chr_generic_open(chr);
|
|
|
|
*_chr = chr;
|
|
return 0;
|
|
}
|
|
|
|
static int qemu_chr_open_win_file(HANDLE fd_out, CharDriverState **pchr)
|
|
{
|
|
CharDriverState *chr;
|
|
WinCharState *s;
|
|
|
|
chr = g_malloc0(sizeof(CharDriverState));
|
|
s = g_malloc0(sizeof(WinCharState));
|
|
s->hcom = fd_out;
|
|
chr->opaque = s;
|
|
chr->chr_write = win_chr_write;
|
|
qemu_chr_generic_open(chr);
|
|
*pchr = chr;
|
|
return 0;
|
|
}
|
|
|
|
static int qemu_chr_open_win_con(QemuOpts *opts, CharDriverState **chr)
|
|
{
|
|
return qemu_chr_open_win_file(GetStdHandle(STD_OUTPUT_HANDLE), chr);
|
|
}
|
|
|
|
static int qemu_chr_open_win_file_out(QemuOpts *opts, CharDriverState **_chr)
|
|
{
|
|
const char *file_out = qemu_opt_get(opts, "path");
|
|
HANDLE fd_out;
|
|
|
|
fd_out = CreateFile(file_out, GENERIC_WRITE, FILE_SHARE_READ, NULL,
|
|
OPEN_ALWAYS, FILE_ATTRIBUTE_NORMAL, NULL);
|
|
if (fd_out == INVALID_HANDLE_VALUE) {
|
|
return -EIO;
|
|
}
|
|
|
|
return qemu_chr_open_win_file(fd_out, _chr);
|
|
}
|
|
#endif /* !_WIN32 */
|
|
|
|
/***********************************************************/
|
|
/* UDP Net console */
|
|
|
|
typedef struct {
|
|
int fd;
|
|
uint8_t buf[READ_BUF_LEN];
|
|
int bufcnt;
|
|
int bufptr;
|
|
int max_size;
|
|
} NetCharDriver;
|
|
|
|
static int udp_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
|
|
{
|
|
NetCharDriver *s = chr->opaque;
|
|
|
|
return send(s->fd, (const void *)buf, len, 0);
|
|
}
|
|
|
|
static int udp_chr_read_poll(void *opaque)
|
|
{
|
|
CharDriverState *chr = opaque;
|
|
NetCharDriver *s = chr->opaque;
|
|
|
|
s->max_size = qemu_chr_be_can_write(chr);
|
|
|
|
/* If there were any stray characters in the queue process them
|
|
* first
|
|
*/
|
|
while (s->max_size > 0 && s->bufptr < s->bufcnt) {
|
|
qemu_chr_be_write(chr, &s->buf[s->bufptr], 1);
|
|
s->bufptr++;
|
|
s->max_size = qemu_chr_be_can_write(chr);
|
|
}
|
|
return s->max_size;
|
|
}
|
|
|
|
static void udp_chr_read(void *opaque)
|
|
{
|
|
CharDriverState *chr = opaque;
|
|
NetCharDriver *s = chr->opaque;
|
|
|
|
if (s->max_size == 0)
|
|
return;
|
|
s->bufcnt = qemu_recv(s->fd, s->buf, sizeof(s->buf), 0);
|
|
s->bufptr = s->bufcnt;
|
|
if (s->bufcnt <= 0)
|
|
return;
|
|
|
|
s->bufptr = 0;
|
|
while (s->max_size > 0 && s->bufptr < s->bufcnt) {
|
|
qemu_chr_be_write(chr, &s->buf[s->bufptr], 1);
|
|
s->bufptr++;
|
|
s->max_size = qemu_chr_be_can_write(chr);
|
|
}
|
|
}
|
|
|
|
static void udp_chr_update_read_handler(CharDriverState *chr)
|
|
{
|
|
NetCharDriver *s = chr->opaque;
|
|
|
|
if (s->fd >= 0) {
|
|
qemu_set_fd_handler2(s->fd, udp_chr_read_poll,
|
|
udp_chr_read, NULL, chr);
|
|
}
|
|
}
|
|
|
|
static void udp_chr_close(CharDriverState *chr)
|
|
{
|
|
NetCharDriver *s = chr->opaque;
|
|
if (s->fd >= 0) {
|
|
qemu_set_fd_handler(s->fd, NULL, NULL, NULL);
|
|
closesocket(s->fd);
|
|
}
|
|
g_free(s);
|
|
qemu_chr_event(chr, CHR_EVENT_CLOSED);
|
|
}
|
|
|
|
static int qemu_chr_open_udp(QemuOpts *opts, CharDriverState **_chr)
|
|
{
|
|
CharDriverState *chr = NULL;
|
|
NetCharDriver *s = NULL;
|
|
int fd = -1;
|
|
int ret;
|
|
|
|
chr = g_malloc0(sizeof(CharDriverState));
|
|
s = g_malloc0(sizeof(NetCharDriver));
|
|
|
|
fd = inet_dgram_opts(opts);
|
|
if (fd < 0) {
|
|
fprintf(stderr, "inet_dgram_opts failed\n");
|
|
ret = -errno;
|
|
goto return_err;
|
|
}
|
|
|
|
s->fd = fd;
|
|
s->bufcnt = 0;
|
|
s->bufptr = 0;
|
|
chr->opaque = s;
|
|
chr->chr_write = udp_chr_write;
|
|
chr->chr_update_read_handler = udp_chr_update_read_handler;
|
|
chr->chr_close = udp_chr_close;
|
|
|
|
*_chr = chr;
|
|
return 0;
|
|
|
|
return_err:
|
|
g_free(chr);
|
|
g_free(s);
|
|
if (fd >= 0) {
|
|
closesocket(fd);
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
/***********************************************************/
|
|
/* TCP Net console */
|
|
|
|
typedef struct {
|
|
int fd, listen_fd;
|
|
int connected;
|
|
int max_size;
|
|
int do_telnetopt;
|
|
int do_nodelay;
|
|
int is_unix;
|
|
int msgfd;
|
|
} TCPCharDriver;
|
|
|
|
static void tcp_chr_accept(void *opaque);
|
|
|
|
static int tcp_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
|
|
{
|
|
TCPCharDriver *s = chr->opaque;
|
|
if (s->connected) {
|
|
return send_all(s->fd, buf, len);
|
|
} else {
|
|
/* XXX: indicate an error ? */
|
|
return len;
|
|
}
|
|
}
|
|
|
|
static int tcp_chr_read_poll(void *opaque)
|
|
{
|
|
CharDriverState *chr = opaque;
|
|
TCPCharDriver *s = chr->opaque;
|
|
if (!s->connected)
|
|
return 0;
|
|
s->max_size = qemu_chr_be_can_write(chr);
|
|
return s->max_size;
|
|
}
|
|
|
|
#define IAC 255
|
|
#define IAC_BREAK 243
|
|
static void tcp_chr_process_IAC_bytes(CharDriverState *chr,
|
|
TCPCharDriver *s,
|
|
uint8_t *buf, int *size)
|
|
{
|
|
/* Handle any telnet client's basic IAC options to satisfy char by
|
|
* char mode with no echo. All IAC options will be removed from
|
|
* the buf and the do_telnetopt variable will be used to track the
|
|
* state of the width of the IAC information.
|
|
*
|
|
* IAC commands come in sets of 3 bytes with the exception of the
|
|
* "IAC BREAK" command and the double IAC.
|
|
*/
|
|
|
|
int i;
|
|
int j = 0;
|
|
|
|
for (i = 0; i < *size; i++) {
|
|
if (s->do_telnetopt > 1) {
|
|
if ((unsigned char)buf[i] == IAC && s->do_telnetopt == 2) {
|
|
/* Double IAC means send an IAC */
|
|
if (j != i)
|
|
buf[j] = buf[i];
|
|
j++;
|
|
s->do_telnetopt = 1;
|
|
} else {
|
|
if ((unsigned char)buf[i] == IAC_BREAK && s->do_telnetopt == 2) {
|
|
/* Handle IAC break commands by sending a serial break */
|
|
qemu_chr_event(chr, CHR_EVENT_BREAK);
|
|
s->do_telnetopt++;
|
|
}
|
|
s->do_telnetopt++;
|
|
}
|
|
if (s->do_telnetopt >= 4) {
|
|
s->do_telnetopt = 1;
|
|
}
|
|
} else {
|
|
if ((unsigned char)buf[i] == IAC) {
|
|
s->do_telnetopt = 2;
|
|
} else {
|
|
if (j != i)
|
|
buf[j] = buf[i];
|
|
j++;
|
|
}
|
|
}
|
|
}
|
|
*size = j;
|
|
}
|
|
|
|
static int tcp_get_msgfd(CharDriverState *chr)
|
|
{
|
|
TCPCharDriver *s = chr->opaque;
|
|
int fd = s->msgfd;
|
|
s->msgfd = -1;
|
|
return fd;
|
|
}
|
|
|
|
#ifndef _WIN32
|
|
static void unix_process_msgfd(CharDriverState *chr, struct msghdr *msg)
|
|
{
|
|
TCPCharDriver *s = chr->opaque;
|
|
struct cmsghdr *cmsg;
|
|
|
|
for (cmsg = CMSG_FIRSTHDR(msg); cmsg; cmsg = CMSG_NXTHDR(msg, cmsg)) {
|
|
int fd;
|
|
|
|
if (cmsg->cmsg_len != CMSG_LEN(sizeof(int)) ||
|
|
cmsg->cmsg_level != SOL_SOCKET ||
|
|
cmsg->cmsg_type != SCM_RIGHTS)
|
|
continue;
|
|
|
|
fd = *((int *)CMSG_DATA(cmsg));
|
|
if (fd < 0)
|
|
continue;
|
|
|
|
if (s->msgfd != -1)
|
|
close(s->msgfd);
|
|
s->msgfd = fd;
|
|
}
|
|
}
|
|
|
|
static ssize_t tcp_chr_recv(CharDriverState *chr, char *buf, size_t len)
|
|
{
|
|
TCPCharDriver *s = chr->opaque;
|
|
struct msghdr msg = { NULL, };
|
|
struct iovec iov[1];
|
|
union {
|
|
struct cmsghdr cmsg;
|
|
char control[CMSG_SPACE(sizeof(int))];
|
|
} msg_control;
|
|
ssize_t ret;
|
|
|
|
iov[0].iov_base = buf;
|
|
iov[0].iov_len = len;
|
|
|
|
msg.msg_iov = iov;
|
|
msg.msg_iovlen = 1;
|
|
msg.msg_control = &msg_control;
|
|
msg.msg_controllen = sizeof(msg_control);
|
|
|
|
ret = recvmsg(s->fd, &msg, 0);
|
|
if (ret > 0 && s->is_unix)
|
|
unix_process_msgfd(chr, &msg);
|
|
|
|
return ret;
|
|
}
|
|
#else
|
|
static ssize_t tcp_chr_recv(CharDriverState *chr, char *buf, size_t len)
|
|
{
|
|
TCPCharDriver *s = chr->opaque;
|
|
return qemu_recv(s->fd, buf, len, 0);
|
|
}
|
|
#endif
|
|
|
|
static void tcp_chr_read(void *opaque)
|
|
{
|
|
CharDriverState *chr = opaque;
|
|
TCPCharDriver *s = chr->opaque;
|
|
uint8_t buf[READ_BUF_LEN];
|
|
int len, size;
|
|
|
|
if (!s->connected || s->max_size <= 0)
|
|
return;
|
|
len = sizeof(buf);
|
|
if (len > s->max_size)
|
|
len = s->max_size;
|
|
size = tcp_chr_recv(chr, (void *)buf, len);
|
|
if (size == 0) {
|
|
/* connection closed */
|
|
s->connected = 0;
|
|
if (s->listen_fd >= 0) {
|
|
qemu_set_fd_handler(s->listen_fd, tcp_chr_accept, NULL, chr);
|
|
}
|
|
qemu_set_fd_handler(s->fd, NULL, NULL, NULL);
|
|
closesocket(s->fd);
|
|
s->fd = -1;
|
|
qemu_chr_event(chr, CHR_EVENT_CLOSED);
|
|
} else if (size > 0) {
|
|
if (s->do_telnetopt)
|
|
tcp_chr_process_IAC_bytes(chr, s, buf, &size);
|
|
if (size > 0)
|
|
qemu_chr_be_write(chr, buf, size);
|
|
}
|
|
}
|
|
|
|
#ifndef _WIN32
|
|
CharDriverState *qemu_chr_open_eventfd(int eventfd)
|
|
{
|
|
return qemu_chr_open_fd(eventfd, eventfd);
|
|
}
|
|
#endif
|
|
|
|
static void tcp_chr_connect(void *opaque)
|
|
{
|
|
CharDriverState *chr = opaque;
|
|
TCPCharDriver *s = chr->opaque;
|
|
|
|
s->connected = 1;
|
|
qemu_set_fd_handler2(s->fd, tcp_chr_read_poll,
|
|
tcp_chr_read, NULL, chr);
|
|
qemu_chr_generic_open(chr);
|
|
}
|
|
|
|
#define IACSET(x,a,b,c) x[0] = a; x[1] = b; x[2] = c;
|
|
static void tcp_chr_telnet_init(int fd)
|
|
{
|
|
char buf[3];
|
|
/* Send the telnet negotion to put telnet in binary, no echo, single char mode */
|
|
IACSET(buf, 0xff, 0xfb, 0x01); /* IAC WILL ECHO */
|
|
send(fd, (char *)buf, 3, 0);
|
|
IACSET(buf, 0xff, 0xfb, 0x03); /* IAC WILL Suppress go ahead */
|
|
send(fd, (char *)buf, 3, 0);
|
|
IACSET(buf, 0xff, 0xfb, 0x00); /* IAC WILL Binary */
|
|
send(fd, (char *)buf, 3, 0);
|
|
IACSET(buf, 0xff, 0xfd, 0x00); /* IAC DO Binary */
|
|
send(fd, (char *)buf, 3, 0);
|
|
}
|
|
|
|
static void socket_set_nodelay(int fd)
|
|
{
|
|
int val = 1;
|
|
setsockopt(fd, IPPROTO_TCP, TCP_NODELAY, (char *)&val, sizeof(val));
|
|
}
|
|
|
|
static int tcp_chr_add_client(CharDriverState *chr, int fd)
|
|
{
|
|
TCPCharDriver *s = chr->opaque;
|
|
if (s->fd != -1)
|
|
return -1;
|
|
|
|
socket_set_nonblock(fd);
|
|
if (s->do_nodelay)
|
|
socket_set_nodelay(fd);
|
|
s->fd = fd;
|
|
qemu_set_fd_handler(s->listen_fd, NULL, NULL, NULL);
|
|
tcp_chr_connect(chr);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void tcp_chr_accept(void *opaque)
|
|
{
|
|
CharDriverState *chr = opaque;
|
|
TCPCharDriver *s = chr->opaque;
|
|
struct sockaddr_in saddr;
|
|
#ifndef _WIN32
|
|
struct sockaddr_un uaddr;
|
|
#endif
|
|
struct sockaddr *addr;
|
|
socklen_t len;
|
|
int fd;
|
|
|
|
for(;;) {
|
|
#ifndef _WIN32
|
|
if (s->is_unix) {
|
|
len = sizeof(uaddr);
|
|
addr = (struct sockaddr *)&uaddr;
|
|
} else
|
|
#endif
|
|
{
|
|
len = sizeof(saddr);
|
|
addr = (struct sockaddr *)&saddr;
|
|
}
|
|
fd = qemu_accept(s->listen_fd, addr, &len);
|
|
if (fd < 0 && errno != EINTR) {
|
|
return;
|
|
} else if (fd >= 0) {
|
|
if (s->do_telnetopt)
|
|
tcp_chr_telnet_init(fd);
|
|
break;
|
|
}
|
|
}
|
|
if (tcp_chr_add_client(chr, fd) < 0)
|
|
close(fd);
|
|
}
|
|
|
|
static void tcp_chr_close(CharDriverState *chr)
|
|
{
|
|
TCPCharDriver *s = chr->opaque;
|
|
if (s->fd >= 0) {
|
|
qemu_set_fd_handler(s->fd, NULL, NULL, NULL);
|
|
closesocket(s->fd);
|
|
}
|
|
if (s->listen_fd >= 0) {
|
|
qemu_set_fd_handler(s->listen_fd, NULL, NULL, NULL);
|
|
closesocket(s->listen_fd);
|
|
}
|
|
g_free(s);
|
|
qemu_chr_event(chr, CHR_EVENT_CLOSED);
|
|
}
|
|
|
|
static int qemu_chr_open_socket(QemuOpts *opts, CharDriverState **_chr)
|
|
{
|
|
CharDriverState *chr = NULL;
|
|
TCPCharDriver *s = NULL;
|
|
int fd = -1;
|
|
int is_listen;
|
|
int is_waitconnect;
|
|
int do_nodelay;
|
|
int is_unix;
|
|
int is_telnet;
|
|
int ret;
|
|
|
|
is_listen = qemu_opt_get_bool(opts, "server", 0);
|
|
is_waitconnect = qemu_opt_get_bool(opts, "wait", 1);
|
|
is_telnet = qemu_opt_get_bool(opts, "telnet", 0);
|
|
do_nodelay = !qemu_opt_get_bool(opts, "delay", 1);
|
|
is_unix = qemu_opt_get(opts, "path") != NULL;
|
|
if (!is_listen)
|
|
is_waitconnect = 0;
|
|
|
|
chr = g_malloc0(sizeof(CharDriverState));
|
|
s = g_malloc0(sizeof(TCPCharDriver));
|
|
|
|
if (is_unix) {
|
|
if (is_listen) {
|
|
fd = unix_listen_opts(opts);
|
|
} else {
|
|
fd = unix_connect_opts(opts);
|
|
}
|
|
} else {
|
|
if (is_listen) {
|
|
fd = inet_listen_opts(opts, 0);
|
|
} else {
|
|
fd = inet_connect_opts(opts);
|
|
}
|
|
}
|
|
if (fd < 0) {
|
|
ret = -errno;
|
|
goto fail;
|
|
}
|
|
|
|
if (!is_waitconnect)
|
|
socket_set_nonblock(fd);
|
|
|
|
s->connected = 0;
|
|
s->fd = -1;
|
|
s->listen_fd = -1;
|
|
s->msgfd = -1;
|
|
s->is_unix = is_unix;
|
|
s->do_nodelay = do_nodelay && !is_unix;
|
|
|
|
chr->opaque = s;
|
|
chr->chr_write = tcp_chr_write;
|
|
chr->chr_close = tcp_chr_close;
|
|
chr->get_msgfd = tcp_get_msgfd;
|
|
chr->chr_add_client = tcp_chr_add_client;
|
|
|
|
if (is_listen) {
|
|
s->listen_fd = fd;
|
|
qemu_set_fd_handler(s->listen_fd, tcp_chr_accept, NULL, chr);
|
|
if (is_telnet)
|
|
s->do_telnetopt = 1;
|
|
|
|
} else {
|
|
s->connected = 1;
|
|
s->fd = fd;
|
|
socket_set_nodelay(fd);
|
|
tcp_chr_connect(chr);
|
|
}
|
|
|
|
/* for "info chardev" monitor command */
|
|
chr->filename = g_malloc(256);
|
|
if (is_unix) {
|
|
snprintf(chr->filename, 256, "unix:%s%s",
|
|
qemu_opt_get(opts, "path"),
|
|
qemu_opt_get_bool(opts, "server", 0) ? ",server" : "");
|
|
} else if (is_telnet) {
|
|
snprintf(chr->filename, 256, "telnet:%s:%s%s",
|
|
qemu_opt_get(opts, "host"), qemu_opt_get(opts, "port"),
|
|
qemu_opt_get_bool(opts, "server", 0) ? ",server" : "");
|
|
} else {
|
|
snprintf(chr->filename, 256, "tcp:%s:%s%s",
|
|
qemu_opt_get(opts, "host"), qemu_opt_get(opts, "port"),
|
|
qemu_opt_get_bool(opts, "server", 0) ? ",server" : "");
|
|
}
|
|
|
|
if (is_listen && is_waitconnect) {
|
|
printf("QEMU waiting for connection on: %s\n",
|
|
chr->filename);
|
|
tcp_chr_accept(chr);
|
|
socket_set_nonblock(s->listen_fd);
|
|
}
|
|
|
|
*_chr = chr;
|
|
return 0;
|
|
|
|
fail:
|
|
if (fd >= 0)
|
|
closesocket(fd);
|
|
g_free(s);
|
|
g_free(chr);
|
|
return ret;
|
|
}
|
|
|
|
/***********************************************************/
|
|
/* Memory chardev */
|
|
typedef struct {
|
|
size_t outbuf_size;
|
|
size_t outbuf_capacity;
|
|
uint8_t *outbuf;
|
|
} MemoryDriver;
|
|
|
|
static int mem_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
|
|
{
|
|
MemoryDriver *d = chr->opaque;
|
|
|
|
/* TODO: the QString implementation has the same code, we should
|
|
* introduce a generic way to do this in cutils.c */
|
|
if (d->outbuf_capacity < d->outbuf_size + len) {
|
|
/* grow outbuf */
|
|
d->outbuf_capacity += len;
|
|
d->outbuf_capacity *= 2;
|
|
d->outbuf = g_realloc(d->outbuf, d->outbuf_capacity);
|
|
}
|
|
|
|
memcpy(d->outbuf + d->outbuf_size, buf, len);
|
|
d->outbuf_size += len;
|
|
|
|
return len;
|
|
}
|
|
|
|
void qemu_chr_init_mem(CharDriverState *chr)
|
|
{
|
|
MemoryDriver *d;
|
|
|
|
d = g_malloc(sizeof(*d));
|
|
d->outbuf_size = 0;
|
|
d->outbuf_capacity = 4096;
|
|
d->outbuf = g_malloc0(d->outbuf_capacity);
|
|
|
|
memset(chr, 0, sizeof(*chr));
|
|
chr->opaque = d;
|
|
chr->chr_write = mem_chr_write;
|
|
}
|
|
|
|
QString *qemu_chr_mem_to_qs(CharDriverState *chr)
|
|
{
|
|
MemoryDriver *d = chr->opaque;
|
|
return qstring_from_substr((char *) d->outbuf, 0, d->outbuf_size - 1);
|
|
}
|
|
|
|
/* NOTE: this driver can not be closed with qemu_chr_delete()! */
|
|
void qemu_chr_close_mem(CharDriverState *chr)
|
|
{
|
|
MemoryDriver *d = chr->opaque;
|
|
|
|
g_free(d->outbuf);
|
|
g_free(chr->opaque);
|
|
chr->opaque = NULL;
|
|
chr->chr_write = NULL;
|
|
}
|
|
|
|
size_t qemu_chr_mem_osize(const CharDriverState *chr)
|
|
{
|
|
const MemoryDriver *d = chr->opaque;
|
|
return d->outbuf_size;
|
|
}
|
|
|
|
QemuOpts *qemu_chr_parse_compat(const char *label, const char *filename)
|
|
{
|
|
char host[65], port[33], width[8], height[8];
|
|
int pos;
|
|
const char *p;
|
|
QemuOpts *opts;
|
|
|
|
opts = qemu_opts_create(qemu_find_opts("chardev"), label, 1);
|
|
if (NULL == opts)
|
|
return NULL;
|
|
|
|
if (strstart(filename, "mon:", &p)) {
|
|
filename = p;
|
|
qemu_opt_set(opts, "mux", "on");
|
|
}
|
|
|
|
if (strcmp(filename, "null") == 0 ||
|
|
strcmp(filename, "pty") == 0 ||
|
|
strcmp(filename, "msmouse") == 0 ||
|
|
strcmp(filename, "braille") == 0 ||
|
|
strcmp(filename, "stdio") == 0) {
|
|
qemu_opt_set(opts, "backend", filename);
|
|
return opts;
|
|
}
|
|
if (strstart(filename, "vc", &p)) {
|
|
qemu_opt_set(opts, "backend", "vc");
|
|
if (*p == ':') {
|
|
if (sscanf(p+1, "%8[0-9]x%8[0-9]", width, height) == 2) {
|
|
/* pixels */
|
|
qemu_opt_set(opts, "width", width);
|
|
qemu_opt_set(opts, "height", height);
|
|
} else if (sscanf(p+1, "%8[0-9]Cx%8[0-9]C", width, height) == 2) {
|
|
/* chars */
|
|
qemu_opt_set(opts, "cols", width);
|
|
qemu_opt_set(opts, "rows", height);
|
|
} else {
|
|
goto fail;
|
|
}
|
|
}
|
|
return opts;
|
|
}
|
|
if (strcmp(filename, "con:") == 0) {
|
|
qemu_opt_set(opts, "backend", "console");
|
|
return opts;
|
|
}
|
|
if (strstart(filename, "COM", NULL)) {
|
|
qemu_opt_set(opts, "backend", "serial");
|
|
qemu_opt_set(opts, "path", filename);
|
|
return opts;
|
|
}
|
|
if (strstart(filename, "file:", &p)) {
|
|
qemu_opt_set(opts, "backend", "file");
|
|
qemu_opt_set(opts, "path", p);
|
|
return opts;
|
|
}
|
|
if (strstart(filename, "pipe:", &p)) {
|
|
qemu_opt_set(opts, "backend", "pipe");
|
|
qemu_opt_set(opts, "path", p);
|
|
return opts;
|
|
}
|
|
if (strstart(filename, "tcp:", &p) ||
|
|
strstart(filename, "telnet:", &p)) {
|
|
if (sscanf(p, "%64[^:]:%32[^,]%n", host, port, &pos) < 2) {
|
|
host[0] = 0;
|
|
if (sscanf(p, ":%32[^,]%n", port, &pos) < 1)
|
|
goto fail;
|
|
}
|
|
qemu_opt_set(opts, "backend", "socket");
|
|
qemu_opt_set(opts, "host", host);
|
|
qemu_opt_set(opts, "port", port);
|
|
if (p[pos] == ',') {
|
|
if (qemu_opts_do_parse(opts, p+pos+1, NULL) != 0)
|
|
goto fail;
|
|
}
|
|
if (strstart(filename, "telnet:", &p))
|
|
qemu_opt_set(opts, "telnet", "on");
|
|
return opts;
|
|
}
|
|
if (strstart(filename, "udp:", &p)) {
|
|
qemu_opt_set(opts, "backend", "udp");
|
|
if (sscanf(p, "%64[^:]:%32[^@,]%n", host, port, &pos) < 2) {
|
|
host[0] = 0;
|
|
if (sscanf(p, ":%32[^@,]%n", port, &pos) < 1) {
|
|
goto fail;
|
|
}
|
|
}
|
|
qemu_opt_set(opts, "host", host);
|
|
qemu_opt_set(opts, "port", port);
|
|
if (p[pos] == '@') {
|
|
p += pos + 1;
|
|
if (sscanf(p, "%64[^:]:%32[^,]%n", host, port, &pos) < 2) {
|
|
host[0] = 0;
|
|
if (sscanf(p, ":%32[^,]%n", port, &pos) < 1) {
|
|
goto fail;
|
|
}
|
|
}
|
|
qemu_opt_set(opts, "localaddr", host);
|
|
qemu_opt_set(opts, "localport", port);
|
|
}
|
|
return opts;
|
|
}
|
|
if (strstart(filename, "unix:", &p)) {
|
|
qemu_opt_set(opts, "backend", "socket");
|
|
if (qemu_opts_do_parse(opts, p, "path") != 0)
|
|
goto fail;
|
|
return opts;
|
|
}
|
|
if (strstart(filename, "/dev/parport", NULL) ||
|
|
strstart(filename, "/dev/ppi", NULL)) {
|
|
qemu_opt_set(opts, "backend", "parport");
|
|
qemu_opt_set(opts, "path", filename);
|
|
return opts;
|
|
}
|
|
if (strstart(filename, "/dev/", NULL)) {
|
|
qemu_opt_set(opts, "backend", "tty");
|
|
qemu_opt_set(opts, "path", filename);
|
|
return opts;
|
|
}
|
|
|
|
fail:
|
|
qemu_opts_del(opts);
|
|
return NULL;
|
|
}
|
|
|
|
static const struct {
|
|
const char *name;
|
|
int (*open)(QemuOpts *opts, CharDriverState **chr);
|
|
} backend_table[] = {
|
|
{ .name = "null", .open = qemu_chr_open_null },
|
|
{ .name = "socket", .open = qemu_chr_open_socket },
|
|
{ .name = "udp", .open = qemu_chr_open_udp },
|
|
{ .name = "msmouse", .open = qemu_chr_open_msmouse },
|
|
{ .name = "vc", .open = text_console_init },
|
|
#ifdef _WIN32
|
|
{ .name = "file", .open = qemu_chr_open_win_file_out },
|
|
{ .name = "pipe", .open = qemu_chr_open_win_pipe },
|
|
{ .name = "console", .open = qemu_chr_open_win_con },
|
|
{ .name = "serial", .open = qemu_chr_open_win },
|
|
#else
|
|
{ .name = "file", .open = qemu_chr_open_file_out },
|
|
{ .name = "pipe", .open = qemu_chr_open_pipe },
|
|
{ .name = "pty", .open = qemu_chr_open_pty },
|
|
{ .name = "stdio", .open = qemu_chr_open_stdio },
|
|
#endif
|
|
#ifdef CONFIG_BRLAPI
|
|
{ .name = "braille", .open = chr_baum_init },
|
|
#endif
|
|
#if defined(__linux__) || defined(__sun__) || defined(__FreeBSD__) \
|
|
|| defined(__NetBSD__) || defined(__OpenBSD__) || defined(__DragonFly__) \
|
|
|| defined(__FreeBSD_kernel__)
|
|
{ .name = "tty", .open = qemu_chr_open_tty },
|
|
#endif
|
|
#if defined(__linux__) || defined(__FreeBSD__) || defined(__DragonFly__) \
|
|
|| defined(__FreeBSD_kernel__)
|
|
{ .name = "parport", .open = qemu_chr_open_pp },
|
|
#endif
|
|
#ifdef CONFIG_SPICE
|
|
{ .name = "spicevmc", .open = qemu_chr_open_spice },
|
|
#endif
|
|
};
|
|
|
|
CharDriverState *qemu_chr_new_from_opts(QemuOpts *opts,
|
|
void (*init)(struct CharDriverState *s))
|
|
{
|
|
CharDriverState *chr;
|
|
int i;
|
|
int ret;
|
|
|
|
if (qemu_opts_id(opts) == NULL) {
|
|
fprintf(stderr, "chardev: no id specified\n");
|
|
return NULL;
|
|
}
|
|
|
|
if (qemu_opt_get(opts, "backend") == NULL) {
|
|
fprintf(stderr, "chardev: \"%s\" missing backend\n",
|
|
qemu_opts_id(opts));
|
|
return NULL;
|
|
}
|
|
for (i = 0; i < ARRAY_SIZE(backend_table); i++) {
|
|
if (strcmp(backend_table[i].name, qemu_opt_get(opts, "backend")) == 0)
|
|
break;
|
|
}
|
|
if (i == ARRAY_SIZE(backend_table)) {
|
|
fprintf(stderr, "chardev: backend \"%s\" not found\n",
|
|
qemu_opt_get(opts, "backend"));
|
|
return NULL;
|
|
}
|
|
|
|
ret = backend_table[i].open(opts, &chr);
|
|
if (ret < 0) {
|
|
fprintf(stderr, "chardev: opening backend \"%s\" failed: %s\n",
|
|
qemu_opt_get(opts, "backend"), strerror(-ret));
|
|
return NULL;
|
|
}
|
|
|
|
if (!chr->filename)
|
|
chr->filename = g_strdup(qemu_opt_get(opts, "backend"));
|
|
chr->init = init;
|
|
QTAILQ_INSERT_TAIL(&chardevs, chr, next);
|
|
|
|
if (qemu_opt_get_bool(opts, "mux", 0)) {
|
|
CharDriverState *base = chr;
|
|
int len = strlen(qemu_opts_id(opts)) + 6;
|
|
base->label = g_malloc(len);
|
|
snprintf(base->label, len, "%s-base", qemu_opts_id(opts));
|
|
chr = qemu_chr_open_mux(base);
|
|
chr->filename = base->filename;
|
|
chr->avail_connections = MAX_MUX;
|
|
QTAILQ_INSERT_TAIL(&chardevs, chr, next);
|
|
} else {
|
|
chr->avail_connections = 1;
|
|
}
|
|
chr->label = g_strdup(qemu_opts_id(opts));
|
|
return chr;
|
|
}
|
|
|
|
CharDriverState *qemu_chr_new(const char *label, const char *filename, void (*init)(struct CharDriverState *s))
|
|
{
|
|
const char *p;
|
|
CharDriverState *chr;
|
|
QemuOpts *opts;
|
|
|
|
if (strstart(filename, "chardev:", &p)) {
|
|
return qemu_chr_find(p);
|
|
}
|
|
|
|
opts = qemu_chr_parse_compat(label, filename);
|
|
if (!opts)
|
|
return NULL;
|
|
|
|
chr = qemu_chr_new_from_opts(opts, init);
|
|
if (chr && qemu_opt_get_bool(opts, "mux", 0)) {
|
|
monitor_init(chr, MONITOR_USE_READLINE);
|
|
}
|
|
qemu_opts_del(opts);
|
|
return chr;
|
|
}
|
|
|
|
void qemu_chr_fe_set_echo(struct CharDriverState *chr, bool echo)
|
|
{
|
|
if (chr->chr_set_echo) {
|
|
chr->chr_set_echo(chr, echo);
|
|
}
|
|
}
|
|
|
|
void qemu_chr_fe_open(struct CharDriverState *chr)
|
|
{
|
|
if (chr->chr_guest_open) {
|
|
chr->chr_guest_open(chr);
|
|
}
|
|
}
|
|
|
|
void qemu_chr_fe_close(struct CharDriverState *chr)
|
|
{
|
|
if (chr->chr_guest_close) {
|
|
chr->chr_guest_close(chr);
|
|
}
|
|
}
|
|
|
|
void qemu_chr_delete(CharDriverState *chr)
|
|
{
|
|
QTAILQ_REMOVE(&chardevs, chr, next);
|
|
if (chr->chr_close)
|
|
chr->chr_close(chr);
|
|
g_free(chr->filename);
|
|
g_free(chr->label);
|
|
g_free(chr);
|
|
}
|
|
|
|
static void qemu_chr_qlist_iter(QObject *obj, void *opaque)
|
|
{
|
|
QDict *chr_dict;
|
|
Monitor *mon = opaque;
|
|
|
|
chr_dict = qobject_to_qdict(obj);
|
|
monitor_printf(mon, "%s: filename=%s\n", qdict_get_str(chr_dict, "label"),
|
|
qdict_get_str(chr_dict, "filename"));
|
|
}
|
|
|
|
void qemu_chr_info_print(Monitor *mon, const QObject *ret_data)
|
|
{
|
|
qlist_iter(qobject_to_qlist(ret_data), qemu_chr_qlist_iter, mon);
|
|
}
|
|
|
|
void qemu_chr_info(Monitor *mon, QObject **ret_data)
|
|
{
|
|
QList *chr_list;
|
|
CharDriverState *chr;
|
|
|
|
chr_list = qlist_new();
|
|
|
|
QTAILQ_FOREACH(chr, &chardevs, next) {
|
|
QObject *obj = qobject_from_jsonf("{ 'label': %s, 'filename': %s }",
|
|
chr->label, chr->filename);
|
|
qlist_append_obj(chr_list, obj);
|
|
}
|
|
|
|
*ret_data = QOBJECT(chr_list);
|
|
}
|
|
|
|
CharDriverState *qemu_chr_find(const char *name)
|
|
{
|
|
CharDriverState *chr;
|
|
|
|
QTAILQ_FOREACH(chr, &chardevs, next) {
|
|
if (strcmp(chr->label, name) != 0)
|
|
continue;
|
|
return chr;
|
|
}
|
|
return NULL;
|
|
}
|