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qemu/qemu-char.c
Orit Wasserman 233aa5c2d1 Fix address handling in inet_nonblocking_connect 
getaddrinfo can give us a list of addresses, but we only try to
connect to the first one. If that fails we never proceed to
the next one.  This is common on desktop setups that often have ipv6
configured but not actually working.

To fix this make inet_connect_nonblocking retry connection with a different
address.
callers on inet_nonblocking_connect register a callback function that will
be called when connect opertion completes, in case of failure the fd will have
a negative value

Signed-off-by: Orit Wasserman <owasserm@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2012-09-25 19:05:56 -05:00

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/*
* 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 "qmp-commands.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(__GLIBC__)
#include <pty.h>
#elif defined(__FreeBSD__) || defined(__FreeBSD_kernel__) || defined(__DragonFly__)
#include <libutil.h>
#else
#include <util.h>
#endif
#if defined(__FreeBSD__) || defined(__FreeBSD_kernel__)
#include <dev/ppbus/ppi.h>
#include <dev/ppbus/ppbconf.h>
#elif defined(__DragonFly__)
#include <dev/misc/ppi/ppi.h>
#include <bus/ppbus/ppbconf.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);
void qemu_chr_be_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_be_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)
{
if (s->chr_read) {
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);
qemu_notify_event();
}
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 CharDriverState *qemu_chr_open_null(QemuOpts *opts)
{
CharDriverState *chr;
chr = g_malloc0(sizeof(CharDriverState));
chr->chr_write = null_chr_write;
return chr;
}
/* 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_be_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 */
#define STDIO_MAX_CLIENTS 1
static int stdio_nb_clients;
#ifndef _WIN32
typedef struct {
int fd_in, fd_out;
int max_size;
} FDCharDriver;
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_be_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_be_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 CharDriverState *qemu_chr_open_file_out(QemuOpts *opts)
{
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 NULL;
}
return qemu_chr_open_fd(-1, fd_out);
}
static CharDriverState *qemu_chr_open_pipe(QemuOpts *opts)
{
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 NULL;
}
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 NULL;
}
}
return qemu_chr_open_fd(fd_in, fd_out);
}
/* 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_be_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 CharDriverState *qemu_chr_open_stdio(QemuOpts *opts)
{
CharDriverState *chr;
if (stdio_nb_clients >= STDIO_MAX_CLIENTS) {
return NULL;
}
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);
return chr;
}
#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_be_event(chr, CHR_EVENT_CLOSED);
}
static CharDriverState *qemu_chr_open_pty(QemuOpts *opts)
{
CharDriverState *chr;
PtyCharDriver *s;
struct termios tty;
int master_fd, 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
if (openpty(&master_fd, &slave_fd, pty_name, NULL, NULL) < 0) {
return NULL;
}
/* Set raw attributes on the pty. */
tcgetattr(slave_fd, &tty);
cfmakeraw(&tty);
tcsetattr(slave_fd, TCSAFLUSH, &tty);
close(slave_fd);
chr = g_malloc0(sizeof(CharDriverState));
len = strlen(q_ptsname(master_fd)) + 5;
chr->filename = g_malloc(len);
snprintf(chr->filename, len, "pty:%s", q_ptsname(master_fd));
qemu_opt_set(opts, "path", q_ptsname(master_fd));
fprintf(stderr, "char device redirected to %s\n", q_ptsname(master_fd));
s = g_malloc0(sizeof(PtyCharDriver));
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->fd = master_fd;
s->timer = qemu_new_timer_ms(rt_clock, pty_chr_timer, chr);
return chr;
}
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 CharDriverState *qemu_chr_open_tty(QemuOpts *opts)
{
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 NULL;
}
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;
return chr;
}
#else /* ! __linux__ && ! __sun__ */
static CharDriverState *qemu_chr_open_pty(QemuOpts *opts)
{
return NULL;
}
#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_be_event(chr, CHR_EVENT_CLOSED);
}
static CharDriverState *qemu_chr_open_pp(QemuOpts *opts)
{
const char *filename = qemu_opt_get(opts, "path");
CharDriverState *chr;
ParallelCharDriver *drv;
int fd;
TFR(fd = qemu_open(filename, O_RDWR));
if (fd < 0) {
return NULL;
}
if (ioctl(fd, PPCLAIM) < 0) {
close(fd);
return NULL;
}
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);
return chr;
}
#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 CharDriverState *qemu_chr_open_pp(QemuOpts *opts)
{
const char *filename = qemu_opt_get(opts, "path");
CharDriverState *chr;
int fd;
fd = qemu_open(filename, O_RDWR);
if (fd < 0) {
return NULL;
}
chr = g_malloc0(sizeof(CharDriverState));
chr->opaque = (void *)(intptr_t)fd;
chr->chr_write = null_chr_write;
chr->chr_ioctl = pp_ioctl;
return chr;
}
#endif
#else /* _WIN32 */
static CharDriverState *stdio_clients[STDIO_MAX_CLIENTS];
typedef struct {
int max_size;
HANDLE hcom, hrecv, hsend;
OVERLAPPED orecv, osend;
BOOL fpipe;
DWORD len;
} WinCharState;
typedef struct {
HANDLE hStdIn;
HANDLE hInputReadyEvent;
HANDLE hInputDoneEvent;
HANDLE hInputThread;
uint8_t win_stdio_buf;
} WinStdioCharState;
#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_be_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 CharDriverState *qemu_chr_open_win(QemuOpts *opts)
{
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) {
g_free(s);
g_free(chr);
return NULL;
}
qemu_chr_generic_open(chr);
return chr;
}
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 CharDriverState *qemu_chr_open_win_pipe(QemuOpts *opts)
{
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) {
g_free(s);
g_free(chr);
return NULL;
}
qemu_chr_generic_open(chr);
return chr;
}
static CharDriverState *qemu_chr_open_win_file(HANDLE fd_out)
{
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);
return chr;
}
static CharDriverState *qemu_chr_open_win_con(QemuOpts *opts)
{
return qemu_chr_open_win_file(GetStdHandle(STD_OUTPUT_HANDLE));
}
static CharDriverState *qemu_chr_open_win_file_out(QemuOpts *opts)
{
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 NULL;
}
return qemu_chr_open_win_file(fd_out);
}
static int win_stdio_write(CharDriverState *chr, const uint8_t *buf, int len)
{
HANDLE hStdOut = GetStdHandle(STD_OUTPUT_HANDLE);
DWORD dwSize;
int len1;
len1 = len;
while (len1 > 0) {
if (!WriteFile(hStdOut, buf, len1, &dwSize, NULL)) {
break;
}
buf += dwSize;
len1 -= dwSize;
}
return len - len1;
}
static void win_stdio_wait_func(void *opaque)
{
CharDriverState *chr = opaque;
WinStdioCharState *stdio = chr->opaque;
INPUT_RECORD buf[4];
int ret;
DWORD dwSize;
int i;
ret = ReadConsoleInput(stdio->hStdIn, buf, sizeof(buf) / sizeof(*buf),
&dwSize);
if (!ret) {
/* Avoid error storm */
qemu_del_wait_object(stdio->hStdIn, NULL, NULL);
return;
}
for (i = 0; i < dwSize; i++) {
KEY_EVENT_RECORD *kev = &buf[i].Event.KeyEvent;
if (buf[i].EventType == KEY_EVENT && kev->bKeyDown) {
int j;
if (kev->uChar.AsciiChar != 0) {
for (j = 0; j < kev->wRepeatCount; j++) {
if (qemu_chr_be_can_write(chr)) {
uint8_t c = kev->uChar.AsciiChar;
qemu_chr_be_write(chr, &c, 1);
}
}
}
}
}
}
static DWORD WINAPI win_stdio_thread(LPVOID param)
{
CharDriverState *chr = param;
WinStdioCharState *stdio = chr->opaque;
int ret;
DWORD dwSize;
while (1) {
/* Wait for one byte */
ret = ReadFile(stdio->hStdIn, &stdio->win_stdio_buf, 1, &dwSize, NULL);
/* Exit in case of error, continue if nothing read */
if (!ret) {
break;
}
if (!dwSize) {
continue;
}
/* Some terminal emulator returns \r\n for Enter, just pass \n */
if (stdio->win_stdio_buf == '\r') {
continue;
}
/* Signal the main thread and wait until the byte was eaten */
if (!SetEvent(stdio->hInputReadyEvent)) {
break;
}
if (WaitForSingleObject(stdio->hInputDoneEvent, INFINITE)
!= WAIT_OBJECT_0) {
break;
}
}
qemu_del_wait_object(stdio->hInputReadyEvent, NULL, NULL);
return 0;
}
static void win_stdio_thread_wait_func(void *opaque)
{
CharDriverState *chr = opaque;
WinStdioCharState *stdio = chr->opaque;
if (qemu_chr_be_can_write(chr)) {
qemu_chr_be_write(chr, &stdio->win_stdio_buf, 1);
}
SetEvent(stdio->hInputDoneEvent);
}
static void qemu_chr_set_echo_win_stdio(CharDriverState *chr, bool echo)
{
WinStdioCharState *stdio = chr->opaque;
DWORD dwMode = 0;
GetConsoleMode(stdio->hStdIn, &dwMode);
if (echo) {
SetConsoleMode(stdio->hStdIn, dwMode | ENABLE_ECHO_INPUT);
} else {
SetConsoleMode(stdio->hStdIn, dwMode & ~ENABLE_ECHO_INPUT);
}
}
static void win_stdio_close(CharDriverState *chr)
{
WinStdioCharState *stdio = chr->opaque;
if (stdio->hInputReadyEvent != INVALID_HANDLE_VALUE) {
CloseHandle(stdio->hInputReadyEvent);
}
if (stdio->hInputDoneEvent != INVALID_HANDLE_VALUE) {
CloseHandle(stdio->hInputDoneEvent);
}
if (stdio->hInputThread != INVALID_HANDLE_VALUE) {
TerminateThread(stdio->hInputThread, 0);
}
g_free(chr->opaque);
g_free(chr);
stdio_nb_clients--;
}
static CharDriverState *qemu_chr_open_win_stdio(QemuOpts *opts)
{
CharDriverState *chr;
WinStdioCharState *stdio;
DWORD dwMode;
int is_console = 0;
if (stdio_nb_clients >= STDIO_MAX_CLIENTS
|| ((display_type != DT_NOGRAPHIC) && (stdio_nb_clients != 0))) {
return NULL;
}
chr = g_malloc0(sizeof(CharDriverState));
stdio = g_malloc0(sizeof(WinStdioCharState));
stdio->hStdIn = GetStdHandle(STD_INPUT_HANDLE);
if (stdio->hStdIn == INVALID_HANDLE_VALUE) {
fprintf(stderr, "cannot open stdio: invalid handle\n");
exit(1);
}
is_console = GetConsoleMode(stdio->hStdIn, &dwMode) != 0;
chr->opaque = stdio;
chr->chr_write = win_stdio_write;
chr->chr_close = win_stdio_close;
if (stdio_nb_clients == 0) {
if (is_console) {
if (qemu_add_wait_object(stdio->hStdIn,
win_stdio_wait_func, chr)) {
fprintf(stderr, "qemu_add_wait_object: failed\n");
}
} else {
DWORD dwId;
stdio->hInputReadyEvent = CreateEvent(NULL, FALSE, FALSE, NULL);
stdio->hInputDoneEvent = CreateEvent(NULL, FALSE, FALSE, NULL);
stdio->hInputThread = CreateThread(NULL, 0, win_stdio_thread,
chr, 0, &dwId);
if (stdio->hInputThread == INVALID_HANDLE_VALUE
|| stdio->hInputReadyEvent == INVALID_HANDLE_VALUE
|| stdio->hInputDoneEvent == INVALID_HANDLE_VALUE) {
fprintf(stderr, "cannot create stdio thread or event\n");
exit(1);
}
if (qemu_add_wait_object(stdio->hInputReadyEvent,
win_stdio_thread_wait_func, chr)) {
fprintf(stderr, "qemu_add_wait_object: failed\n");
}
}
}
dwMode |= ENABLE_LINE_INPUT;
stdio_clients[stdio_nb_clients++] = chr;
if (stdio_nb_clients == 1 && is_console) {
/* set the terminal in raw mode */
/* ENABLE_QUICK_EDIT_MODE | ENABLE_EXTENDED_FLAGS */
dwMode |= ENABLE_PROCESSED_INPUT;
}
SetConsoleMode(stdio->hStdIn, dwMode);
chr->chr_set_echo = qemu_chr_set_echo_win_stdio;
qemu_chr_fe_set_echo(chr, false);
return 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_handler2(s->fd, NULL, NULL, NULL, NULL);
closesocket(s->fd);
}
g_free(s);
qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
}
static CharDriverState *qemu_chr_open_udp(QemuOpts *opts)
{
CharDriverState *chr = NULL;
NetCharDriver *s = NULL;
int fd = -1;
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");
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;
return chr;
return_err:
g_free(chr);
g_free(s);
if (fd >= 0) {
closesocket(fd);
}
return NULL;
}
/***********************************************************/
/* 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_be_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;
#ifndef MSG_CMSG_CLOEXEC
qemu_set_cloexec(fd);
#endif
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;
int flags = 0;
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);
#ifdef MSG_CMSG_CLOEXEC
flags |= MSG_CMSG_CLOEXEC;
#endif
ret = recvmsg(s->fd, &msg, flags);
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_handler2(s->listen_fd, NULL, tcp_chr_accept, NULL, chr);
}
qemu_set_fd_handler2(s->fd, NULL, NULL, NULL, NULL);
closesocket(s->fd);
s->fd = -1;
qemu_chr_be_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;
if (s->fd >= 0) {
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_handler2(s->listen_fd, NULL, 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_handler2(s->fd, NULL, NULL, NULL, NULL);
closesocket(s->fd);
}
if (s->listen_fd >= 0) {
qemu_set_fd_handler2(s->listen_fd, NULL, NULL, NULL, NULL);
closesocket(s->listen_fd);
}
g_free(s);
qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
}
static CharDriverState *qemu_chr_open_socket(QemuOpts *opts)
{
CharDriverState *chr = NULL;
TCPCharDriver *s = NULL;
int fd = -1;
int is_listen;
int is_waitconnect;
int do_nodelay;
int is_unix;
int is_telnet;
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, NULL);
} else {
fd = inet_connect_opts(opts, NULL, NULL, NULL);
}
}
if (fd < 0) {
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_handler2(s->listen_fd, NULL, 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);
}
return chr;
fail:
if (fd >= 0)
closesocket(fd);
g_free(s);
g_free(chr);
return NULL;
}
/***********************************************************/
/* 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;
Error *local_err = NULL;
opts = qemu_opts_create(qemu_find_opts("chardev"), label, 1, &local_err);
if (error_is_set(&local_err)) {
qerror_report_err(local_err);
error_free(local_err);
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;
CharDriverState *(*open)(QemuOpts *opts);
} 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 },
{ .name = "stdio", .open = qemu_chr_open_win_stdio },
#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;
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;
}
chr = backend_table[i].open(opts);
if (!chr) {
fprintf(stderr, "chardev: opening backend \"%s\" failed\n",
qemu_opt_get(opts, "backend"));
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);
}
ChardevInfoList *qmp_query_chardev(Error **errp)
{
ChardevInfoList *chr_list = NULL;
CharDriverState *chr;
QTAILQ_FOREACH(chr, &chardevs, next) {
ChardevInfoList *info = g_malloc0(sizeof(*info));
info->value = g_malloc0(sizeof(*info->value));
info->value->label = g_strdup(chr->label);
info->value->filename = g_strdup(chr->filename);
info->next = chr_list;
chr_list = info;
}
return 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;
}
/* Get a character (serial) device interface. */
CharDriverState *qemu_char_get_next_serial(void)
{
static int next_serial;
/* FIXME: This function needs to go away: use chardev properties! */
return serial_hds[next_serial++];
}
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