--- /dev/null
+/*
+ * 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 "monitor/monitor.h"
+#include "sysemu/sysemu.h"
+#include "qemu/error-report.h"
+#include "qemu/timer.h"
+#include "sysemu/char.h"
+#include "hw/usb.h"
+#include "qmp-commands.h"
+#include "qapi/qmp-input-visitor.h"
+#include "qapi/qmp-output-visitor.h"
+#include "qapi-visit.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 <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 <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>
+#endif
+#endif
+#endif
+
+#include "qemu/sockets.h"
+#include "ui/qemu-spice.h"
+
+#define READ_BUF_LEN 4096
+#define READ_RETRIES 10
+#define CHR_MAX_FILENAME_SIZE 256
+#define TCP_MAX_FDS 16
+
+/***********************************************************/
+/* Socket address helpers */
+static void qapi_copy_SocketAddress(SocketAddress **p_dest,
+ SocketAddress *src)
+{
+ QmpOutputVisitor *qov;
+ QmpInputVisitor *qiv;
+ Visitor *ov, *iv;
+ QObject *obj;
+
+ *p_dest = NULL;
+
+ qov = qmp_output_visitor_new();
+ ov = qmp_output_get_visitor(qov);
+ visit_type_SocketAddress(ov, &src, NULL, &error_abort);
+ obj = qmp_output_get_qobject(qov);
+ qmp_output_visitor_cleanup(qov);
+ if (!obj) {
+ return;
+ }
+
+ qiv = qmp_input_visitor_new(obj);
+ iv = qmp_input_get_visitor(qiv);
+ visit_type_SocketAddress(iv, p_dest, NULL, &error_abort);
+ qmp_input_visitor_cleanup(qiv);
+ qobject_decref(obj);
+}
+
+static int SocketAddress_to_str(char *dest, int max_len,
+ const char *prefix, SocketAddress *addr,
+ bool is_listen, bool is_telnet)
+{
+ switch (addr->kind) {
+ case SOCKET_ADDRESS_KIND_INET:
+ return snprintf(dest, max_len, "%s%s:%s:%s%s", prefix,
+ is_telnet ? "telnet" : "tcp", addr->inet->host,
+ addr->inet->port, is_listen ? ",server" : "");
+ break;
+ case SOCKET_ADDRESS_KIND_UNIX:
+ return snprintf(dest, max_len, "%sunix:%s%s", prefix,
+ addr->q_unix->path, is_listen ? ",server" : "");
+ break;
+ case SOCKET_ADDRESS_KIND_FD:
+ return snprintf(dest, max_len, "%sfd:%s%s", prefix, addr->fd->str,
+ is_listen ? ",server" : "");
+ break;
+ default:
+ abort();
+ }
+}
+
+static int sockaddr_to_str(char *dest, int max_len,
+ struct sockaddr_storage *ss, socklen_t ss_len,
+ struct sockaddr_storage *ps, socklen_t ps_len,
+ bool is_listen, bool is_telnet)
+{
+ char shost[NI_MAXHOST], sserv[NI_MAXSERV];
+ char phost[NI_MAXHOST], pserv[NI_MAXSERV];
+ const char *left = "", *right = "";
+
+ switch (ss->ss_family) {
+#ifndef _WIN32
+ case AF_UNIX:
+ return snprintf(dest, max_len, "unix:%s%s",
+ ((struct sockaddr_un *)(ss))->sun_path,
+ is_listen ? ",server" : "");
+#endif
+ case AF_INET6:
+ left = "[";
+ right = "]";
+ /* fall through */
+ case AF_INET:
+ getnameinfo((struct sockaddr *) ss, ss_len, shost, sizeof(shost),
+ sserv, sizeof(sserv), NI_NUMERICHOST | NI_NUMERICSERV);
+ getnameinfo((struct sockaddr *) ps, ps_len, phost, sizeof(phost),
+ pserv, sizeof(pserv), NI_NUMERICHOST | NI_NUMERICSERV);
+ return snprintf(dest, max_len, "%s:%s%s%s:%s%s <-> %s%s%s:%s",
+ is_telnet ? "telnet" : "tcp",
+ left, shost, right, sserv,
+ is_listen ? ",server" : "",
+ left, phost, right, pserv);
+
+ default:
+ return snprintf(dest, max_len, "unknown");
+ }
+}
+
+/***********************************************************/
+/* character device */
+
+static QTAILQ_HEAD(CharDriverStateHead, CharDriverState) chardevs =
+ QTAILQ_HEAD_INITIALIZER(chardevs);
+
+CharDriverState *qemu_chr_alloc(void)
+{
+ CharDriverState *chr = g_malloc0(sizeof(CharDriverState));
+ qemu_mutex_init(&chr->chr_write_lock);
+ return chr;
+}
+
+void qemu_chr_be_event(CharDriverState *s, int event)
+{
+ /* Keep track if the char device is open */
+ switch (event) {
+ case CHR_EVENT_OPENED:
+ s->be_open = 1;
+ break;
+ case CHR_EVENT_CLOSED:
+ s->be_open = 0;
+ break;
+ }
+
+ if (!s->chr_event)
+ return;
+ s->chr_event(s->handler_opaque, event);
+}
+
+void qemu_chr_be_generic_open(CharDriverState *s)
+{
+ qemu_chr_be_event(s, CHR_EVENT_OPENED);
+}
+
+int qemu_chr_fe_write(CharDriverState *s, const uint8_t *buf, int len)
+{
+ int ret;
+
+ qemu_mutex_lock(&s->chr_write_lock);
+ ret = s->chr_write(s, buf, len);
+ qemu_mutex_unlock(&s->chr_write_lock);
+ return ret;
+}
+
+int qemu_chr_fe_write_all(CharDriverState *s, const uint8_t *buf, int len)
+{
+ int offset = 0;
+ int res = 0;
+
+ qemu_mutex_lock(&s->chr_write_lock);
+ while (offset < len) {
+ do {
+ res = s->chr_write(s, buf + offset, len - offset);
+ if (res == -1 && errno == EAGAIN) {
+ g_usleep(100);
+ }
+ } while (res == -1 && errno == EAGAIN);
+
+ if (res <= 0) {
+ break;
+ }
+
+ offset += res;
+ }
+ qemu_mutex_unlock(&s->chr_write_lock);
+
+ if (res < 0) {
+ return res;
+ }
+ return offset;
+}
+
+int qemu_chr_fe_read_all(CharDriverState *s, uint8_t *buf, int len)
+{
+ int offset = 0, counter = 10;
+ int res;
+
+ if (!s->chr_sync_read) {
+ return 0;
+ }
+
+ while (offset < len) {
+ do {
+ res = s->chr_sync_read(s, buf + offset, len - offset);
+ if (res == -1 && errno == EAGAIN) {
+ g_usleep(100);
+ }
+ } while (res == -1 && errno == EAGAIN);
+
+ if (res == 0) {
+ break;
+ }
+
+ if (res < 0) {
+ return res;
+ }
+
+ offset += res;
+
+ if (!counter--) {
+ break;
+ }
+ }
+
+ return offset;
+}
+
+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)
+{
+ int fd;
+ return (qemu_chr_fe_get_msgfds(s, &fd, 1) == 1) ? fd : -1;
+}
+
+int qemu_chr_fe_get_msgfds(CharDriverState *s, int *fds, int len)
+{
+ return s->get_msgfds ? s->get_msgfds(s, fds, len) : -1;
+}
+
+int qemu_chr_fe_set_msgfds(CharDriverState *s, int *fds, int num)
+{
+ return s->set_msgfds ? s->set_msgfds(s, fds, num) : -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);
+}
+
+static void remove_fd_in_watch(CharDriverState *chr);
+
+void qemu_chr_add_handlers(CharDriverState *s,
+ IOCanReadHandler *fd_can_read,
+ IOReadHandler *fd_read,
+ IOEventHandler *fd_event,
+ void *opaque)
+{
+ int fe_open;
+
+ if (!opaque && !fd_can_read && !fd_read && !fd_event) {
+ fe_open = 0;
+ remove_fd_in_watch(s);
+ } else {
+ fe_open = 1;
+ }
+ s->chr_can_read = fd_can_read;
+ s->chr_read = fd_read;
+ s->chr_event = fd_event;
+ s->handler_opaque = opaque;
+ if (fe_open && s->chr_update_read_handler)
+ s->chr_update_read_handler(s);
+
+ if (!s->explicit_fe_open) {
+ qemu_chr_fe_set_open(s, fe_open);
+ }
+
+ /* We're connecting to an already opened device, so let's make sure we
+ also get the open event */
+ if (fe_open && s->be_open) {
+ qemu_chr_be_generic_open(s);
+ }
+}
+
+static int null_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
+{
+ return len;
+}
+
+static CharDriverState *qemu_chr_open_null(void)
+{
+ CharDriverState *chr;
+
+ chr = qemu_chr_alloc();
+ chr->chr_write = null_chr_write;
+ chr->explicit_be_open = true;
+ 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;
+
+ /* Protected by the CharDriverState chr_write_lock. */
+ int linestart;
+ int64_t timestamps_start;
+} MuxDriver;
+
+
+/* Called with chr_write_lock held. */
+static int mux_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
+{
+ MuxDriver *d = chr->opaque;
+ int ret;
+ if (!d->timestamps) {
+ ret = qemu_chr_fe_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_clock_get_ms(QEMU_CLOCK_REALTIME);
+ 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));
+ qemu_chr_fe_write(d->drv, (uint8_t *)buf1, strlen(buf1));
+ d->linestart = 0;
+ }
+ ret += qemu_chr_fe_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);
+ }
+ qemu_chr_fe_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] == '%')
+ qemu_chr_fe_write(chr, (uint8_t *)ebuf, strlen(ebuf));
+ else
+ qemu_chr_fe_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";
+ qemu_chr_fe_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 bool muxes_realized;
+
+/**
+ * Called after processing of default and command-line-specified
+ * chardevs to deliver CHR_EVENT_OPENED events to any FEs attached
+ * to a mux chardev. This is done here to ensure that
+ * output/prompts/banners are only displayed for the FE that has
+ * focus when initial command-line processing/machine init is
+ * completed.
+ *
+ * After this point, any new FE attached to any new or existing
+ * mux will receive CHR_EVENT_OPENED notifications for the BE
+ * immediately.
+ */
+static void muxes_realize_done(Notifier *notifier, void *unused)
+{
+ CharDriverState *chr;
+
+ QTAILQ_FOREACH(chr, &chardevs, next) {
+ if (chr->is_mux) {
+ MuxDriver *d = chr->opaque;
+ int i;
+
+ /* send OPENED to all already-attached FEs */
+ for (i = 0; i < d->mux_cnt; i++) {
+ mux_chr_send_event(d, i, CHR_EVENT_OPENED);
+ }
+ /* mark mux as OPENED so any new FEs will immediately receive
+ * OPENED event
+ */
+ qemu_chr_be_generic_open(chr);
+ }
+ }
+ muxes_realized = true;
+}
+
+static Notifier muxes_realize_notify = {
+ .notify = muxes_realize_done,
+};
+
+static GSource *mux_chr_add_watch(CharDriverState *s, GIOCondition cond)
+{
+ MuxDriver *d = s->opaque;
+ return d->drv->chr_add_watch(d->drv, cond);
+}
+
+static CharDriverState *qemu_chr_open_mux(CharDriverState *drv)
+{
+ CharDriverState *chr;
+ MuxDriver *d;
+
+ chr = qemu_chr_alloc();
+ 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_set_fe_open = NULL;
+ if (drv->chr_add_watch) {
+ chr->chr_add_watch = mux_chr_add_watch;
+ }
+ /* only default to opened state if we've realized the initial
+ * set of muxes
+ */
+ chr->explicit_be_open = muxes_realized ? 0 : 1;
+ chr->is_mux = 1;
+
+ 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;
+}
+
+int recv_all(int fd, void *_buf, int len1, bool single_read)
+{
+ int ret, len;
+ uint8_t *buf = _buf;
+
+ len = len1;
+ while ((len > 0) && (ret = read(fd, buf, len)) != 0) {
+ if (ret < 0) {
+ if (errno != EINTR && errno != EAGAIN) {
+ return -1;
+ }
+ continue;
+ } else {
+ if (single_read) {
+ return ret;
+ }
+ buf += ret;
+ len -= ret;
+ }
+ }
+ return len1 - len;
+}
+
+#endif /* !_WIN32 */
+
+typedef struct IOWatchPoll
+{
+ GSource parent;
+
+ GIOChannel *channel;
+ GSource *src;
+
+ IOCanReadHandler *fd_can_read;
+ GSourceFunc fd_read;
+ void *opaque;
+} IOWatchPoll;
+
+static IOWatchPoll *io_watch_poll_from_source(GSource *source)
+{
+ return container_of(source, IOWatchPoll, parent);
+}
+
+static gboolean io_watch_poll_prepare(GSource *source, gint *timeout_)
+{
+ IOWatchPoll *iwp = io_watch_poll_from_source(source);
+ bool now_active = iwp->fd_can_read(iwp->opaque) > 0;
+ bool was_active = iwp->src != NULL;
+ if (was_active == now_active) {
+ return FALSE;
+ }
+
+ if (now_active) {
+ iwp->src = g_io_create_watch(iwp->channel,
+ G_IO_IN | G_IO_ERR | G_IO_HUP | G_IO_NVAL);
+ g_source_set_callback(iwp->src, iwp->fd_read, iwp->opaque, NULL);
+ g_source_attach(iwp->src, NULL);
+ } else {
+ g_source_destroy(iwp->src);
+ g_source_unref(iwp->src);
+ iwp->src = NULL;
+ }
+ return FALSE;
+}
+
+static gboolean io_watch_poll_check(GSource *source)
+{
+ return FALSE;
+}
+
+static gboolean io_watch_poll_dispatch(GSource *source, GSourceFunc callback,
+ gpointer user_data)
+{
+ abort();
+}
+
+static void io_watch_poll_finalize(GSource *source)
+{
+ /* Due to a glib bug, removing the last reference to a source
+ * inside a finalize callback causes recursive locking (and a
+ * deadlock). This is not a problem inside other callbacks,
+ * including dispatch callbacks, so we call io_remove_watch_poll
+ * to remove this source. At this point, iwp->src must
+ * be NULL, or we would leak it.
+ *
+ * This would be solved much more elegantly by child sources,
+ * but we support older glib versions that do not have them.
+ */
+ IOWatchPoll *iwp = io_watch_poll_from_source(source);
+ assert(iwp->src == NULL);
+}
+
+static GSourceFuncs io_watch_poll_funcs = {
+ .prepare = io_watch_poll_prepare,
+ .check = io_watch_poll_check,
+ .dispatch = io_watch_poll_dispatch,
+ .finalize = io_watch_poll_finalize,
+};
+
+/* Can only be used for read */
+static guint io_add_watch_poll(GIOChannel *channel,
+ IOCanReadHandler *fd_can_read,
+ GIOFunc fd_read,
+ gpointer user_data)
+{
+ IOWatchPoll *iwp;
+ int tag;
+
+ iwp = (IOWatchPoll *) g_source_new(&io_watch_poll_funcs, sizeof(IOWatchPoll));
+ iwp->fd_can_read = fd_can_read;
+ iwp->opaque = user_data;
+ iwp->channel = channel;
+ iwp->fd_read = (GSourceFunc) fd_read;
+ iwp->src = NULL;
+
+ tag = g_source_attach(&iwp->parent, NULL);
+ g_source_unref(&iwp->parent);
+ return tag;
+}
+
+static void io_remove_watch_poll(guint tag)
+{
+ GSource *source;
+ IOWatchPoll *iwp;
+
+ g_return_if_fail (tag > 0);
+
+ source = g_main_context_find_source_by_id(NULL, tag);
+ g_return_if_fail (source != NULL);
+
+ iwp = io_watch_poll_from_source(source);
+ if (iwp->src) {
+ g_source_destroy(iwp->src);
+ g_source_unref(iwp->src);
+ iwp->src = NULL;
+ }
+ g_source_destroy(&iwp->parent);
+}
+
+static void remove_fd_in_watch(CharDriverState *chr)
+{
+ if (chr->fd_in_tag) {
+ io_remove_watch_poll(chr->fd_in_tag);
+ chr->fd_in_tag = 0;
+ }
+}
+
+#ifndef _WIN32
+static GIOChannel *io_channel_from_fd(int fd)
+{
+ GIOChannel *chan;
+
+ if (fd == -1) {
+ return NULL;
+ }
+
+ chan = g_io_channel_unix_new(fd);
+
+ g_io_channel_set_encoding(chan, NULL, NULL);
+ g_io_channel_set_buffered(chan, FALSE);
+
+ return chan;
+}
+#endif
+
+static GIOChannel *io_channel_from_socket(int fd)
+{
+ GIOChannel *chan;
+
+ if (fd == -1) {
+ return NULL;
+ }
+
+#ifdef _WIN32
+ chan = g_io_channel_win32_new_socket(fd);
+#else
+ chan = g_io_channel_unix_new(fd);
+#endif
+
+ g_io_channel_set_encoding(chan, NULL, NULL);
+ g_io_channel_set_buffered(chan, FALSE);
+
+ return chan;
+}
+
+static int io_channel_send(GIOChannel *fd, const void *buf, size_t len)
+{
+ size_t offset = 0;
+ GIOStatus status = G_IO_STATUS_NORMAL;
+
+ while (offset < len && status == G_IO_STATUS_NORMAL) {
+ gsize bytes_written = 0;
+
+ status = g_io_channel_write_chars(fd, buf + offset, len - offset,
+ &bytes_written, NULL);
+ offset += bytes_written;
+ }
+
+ if (offset > 0) {
+ return offset;
+ }
+ switch (status) {
+ case G_IO_STATUS_NORMAL:
+ g_assert(len == 0);
+ return 0;
+ case G_IO_STATUS_AGAIN:
+ errno = EAGAIN;
+ return -1;
+ default:
+ break;
+ }
+ errno = EINVAL;
+ return -1;
+}
+
+#ifndef _WIN32
+
+typedef struct FDCharDriver {
+ CharDriverState *chr;
+ GIOChannel *fd_in, *fd_out;
+ int max_size;
+} FDCharDriver;
+
+/* Called with chr_write_lock held. */
+static int fd_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
+{
+ FDCharDriver *s = chr->opaque;
+
+ return io_channel_send(s->fd_out, buf, len);
+}
+
+static gboolean fd_chr_read(GIOChannel *chan, GIOCondition cond, void *opaque)
+{
+ CharDriverState *chr = opaque;
+ FDCharDriver *s = chr->opaque;
+ int len;
+ uint8_t buf[READ_BUF_LEN];
+ GIOStatus status;
+ gsize bytes_read;
+
+ len = sizeof(buf);
+ if (len > s->max_size) {
+ len = s->max_size;
+ }
+ if (len == 0) {
+ return TRUE;
+ }
+
+ status = g_io_channel_read_chars(chan, (gchar *)buf,
+ len, &bytes_read, NULL);
+ if (status == G_IO_STATUS_EOF) {
+ remove_fd_in_watch(chr);
+ qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
+ return FALSE;
+ }
+ if (status == G_IO_STATUS_NORMAL) {
+ qemu_chr_be_write(chr, buf, bytes_read);
+ }
+
+ return TRUE;
+}
+
+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 GSource *fd_chr_add_watch(CharDriverState *chr, GIOCondition cond)
+{
+ FDCharDriver *s = chr->opaque;
+ return g_io_create_watch(s->fd_out, cond);
+}
+
+static void fd_chr_update_read_handler(CharDriverState *chr)
+{
+ FDCharDriver *s = chr->opaque;
+
+ remove_fd_in_watch(chr);
+ if (s->fd_in) {
+ chr->fd_in_tag = io_add_watch_poll(s->fd_in, fd_chr_read_poll,
+ fd_chr_read, chr);
+ }
+}
+
+static void fd_chr_close(struct CharDriverState *chr)
+{
+ FDCharDriver *s = chr->opaque;
+
+ remove_fd_in_watch(chr);
+ if (s->fd_in) {
+ g_io_channel_unref(s->fd_in);
+ }
+ if (s->fd_out) {
+ g_io_channel_unref(s->fd_out);
+ }
+
+ 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 = qemu_chr_alloc();
+ s = g_malloc0(sizeof(FDCharDriver));
+ s->fd_in = io_channel_from_fd(fd_in);
+ s->fd_out = io_channel_from_fd(fd_out);
+ qemu_set_nonblock(fd_out);
+ s->chr = chr;
+ chr->opaque = s;
+ chr->chr_add_watch = fd_chr_add_watch;
+ chr->chr_write = fd_chr_write;
+ chr->chr_update_read_handler = fd_chr_update_read_handler;
+ chr->chr_close = fd_chr_close;
+
+ return chr;
+}
+
+static CharDriverState *qemu_chr_open_pipe(ChardevHostdev *opts)
+{
+ int fd_in, fd_out;
+ char filename_in[CHR_MAX_FILENAME_SIZE];
+ char filename_out[CHR_MAX_FILENAME_SIZE];
+ const char *filename = opts->device;
+
+ if (filename == NULL) {
+ fprintf(stderr, "chardev: pipe: no filename given\n");
+ return NULL;
+ }
+
+ snprintf(filename_in, CHR_MAX_FILENAME_SIZE, "%s.in", filename);
+ snprintf(filename_out, CHR_MAX_FILENAME_SIZE, "%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);
+}
+
+/* init terminal so that we can grab keys */
+static struct termios oldtty;
+static int old_fd0_flags;
+static bool stdio_in_use;
+static bool stdio_allow_signal;
+static bool stdio_echo_state;
+
+static void qemu_chr_set_echo_stdio(CharDriverState *chr, bool echo);
+
+static void term_exit(void)
+{
+ tcsetattr (0, TCSANOW, &oldtty);
+ fcntl(0, F_SETFL, old_fd0_flags);
+}
+
+static void term_stdio_handler(int sig)
+{
+ /* restore echo after resume from suspend. */
+ qemu_chr_set_echo_stdio(NULL, stdio_echo_state);
+}
+
+static void qemu_chr_set_echo_stdio(CharDriverState *chr, bool echo)
+{
+ struct termios tty;
+
+ stdio_echo_state = echo;
+ 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 (!stdio_allow_signal)
+ tty.c_lflag &= ~ISIG;
+
+ tcsetattr (0, TCSANOW, &tty);
+}
+
+static void qemu_chr_close_stdio(struct CharDriverState *chr)
+{
+ term_exit();
+ fd_chr_close(chr);
+}
+
+static CharDriverState *qemu_chr_open_stdio(ChardevStdio *opts)
+{
+ CharDriverState *chr;
+ struct sigaction act;
+
+ if (is_daemonized()) {
+ error_report("cannot use stdio with -daemonize");
+ return NULL;
+ }
+
+ if (stdio_in_use) {
+ error_report("cannot use stdio by multiple character devices");
+ exit(1);
+ }
+
+ stdio_in_use = true;
+ old_fd0_flags = fcntl(0, F_GETFL);
+ tcgetattr(0, &oldtty);
+ qemu_set_nonblock(0);
+ atexit(term_exit);
+
+ memset(&act, 0, sizeof(act));
+ act.sa_handler = term_stdio_handler;
+ sigaction(SIGCONT, &act, NULL);
+
+ chr = qemu_chr_open_fd(0, 1);
+ chr->chr_close = qemu_chr_close_stdio;
+ chr->chr_set_echo = qemu_chr_set_echo_stdio;
+ if (opts->has_signal) {
+ stdio_allow_signal = opts->signal;
+ }
+ qemu_chr_fe_set_echo(chr, false);
+
+ return chr;
+}
+
+#if defined(__linux__) || defined(__sun__) || defined(__FreeBSD__) \
+ || defined(__NetBSD__) || defined(__OpenBSD__) || defined(__DragonFly__) \
+ || defined(__GLIBC__)
+
+#define HAVE_CHARDEV_TTY 1
+
+typedef struct {
+ GIOChannel *fd;
+ int read_bytes;
+
+ /* Protected by the CharDriverState chr_write_lock. */
+ int connected;
+ guint timer_tag;
+ guint open_tag;
+} PtyCharDriver;
+
+static void pty_chr_update_read_handler_locked(CharDriverState *chr);
+static void pty_chr_state(CharDriverState *chr, int connected);
+
+static gboolean pty_chr_timer(gpointer opaque)
+{
+ struct CharDriverState *chr = opaque;
+ PtyCharDriver *s = chr->opaque;
+
+ qemu_mutex_lock(&chr->chr_write_lock);
+ s->timer_tag = 0;
+ s->open_tag = 0;
+ if (!s->connected) {
+ /* Next poll ... */
+ pty_chr_update_read_handler_locked(chr);
+ }
+ qemu_mutex_unlock(&chr->chr_write_lock);
+ return FALSE;
+}
+
+/* Called with chr_write_lock held. */
+static void pty_chr_rearm_timer(CharDriverState *chr, int ms)
+{
+ PtyCharDriver *s = chr->opaque;
+
+ if (s->timer_tag) {
+ g_source_remove(s->timer_tag);
+ s->timer_tag = 0;
+ }
+
+ if (ms == 1000) {
+ s->timer_tag = g_timeout_add_seconds(1, pty_chr_timer, chr);
+ } else {
+ s->timer_tag = g_timeout_add(ms, pty_chr_timer, chr);
+ }
+}
+
+/* Called with chr_write_lock held. */
+static void pty_chr_update_read_handler_locked(CharDriverState *chr)
+{
+ PtyCharDriver *s = chr->opaque;
+ GPollFD pfd;
+
+ pfd.fd = g_io_channel_unix_get_fd(s->fd);
+ pfd.events = G_IO_OUT;
+ pfd.revents = 0;
+ g_poll(&pfd, 1, 0);
+ if (pfd.revents & G_IO_HUP) {
+ pty_chr_state(chr, 0);
+ } else {
+ pty_chr_state(chr, 1);
+ }
+}
+
+static void pty_chr_update_read_handler(CharDriverState *chr)
+{
+ qemu_mutex_lock(&chr->chr_write_lock);
+ pty_chr_update_read_handler_locked(chr);
+ qemu_mutex_unlock(&chr->chr_write_lock);
+}
+
+/* Called with chr_write_lock held. */
+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_locked(chr);
+ if (!s->connected) {
+ return 0;
+ }
+ }
+ return io_channel_send(s->fd, buf, len);
+}
+
+static GSource *pty_chr_add_watch(CharDriverState *chr, GIOCondition cond)
+{
+ PtyCharDriver *s = chr->opaque;
+ if (!s->connected) {
+ return NULL;
+ }
+ return g_io_create_watch(s->fd, cond);
+}
+
+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 gboolean pty_chr_read(GIOChannel *chan, GIOCondition cond, void *opaque)
+{
+ CharDriverState *chr = opaque;
+ PtyCharDriver *s = chr->opaque;
+ gsize size, len;
+ uint8_t buf[READ_BUF_LEN];
+ GIOStatus status;
+
+ len = sizeof(buf);
+ if (len > s->read_bytes)
+ len = s->read_bytes;
+ if (len == 0) {
+ return TRUE;
+ }
+ status = g_io_channel_read_chars(s->fd, (gchar *)buf, len, &size, NULL);
+ if (status != G_IO_STATUS_NORMAL) {
+ pty_chr_state(chr, 0);
+ return FALSE;
+ } else {
+ pty_chr_state(chr, 1);
+ qemu_chr_be_write(chr, buf, size);
+ }
+ return TRUE;
+}
+
+static gboolean qemu_chr_be_generic_open_func(gpointer opaque)
+{
+ CharDriverState *chr = opaque;
+ PtyCharDriver *s = chr->opaque;
+
+ s->open_tag = 0;
+ qemu_chr_be_generic_open(chr);
+ return FALSE;
+}
+
+/* Called with chr_write_lock held. */
+static void pty_chr_state(CharDriverState *chr, int connected)
+{
+ PtyCharDriver *s = chr->opaque;
+
+ if (!connected) {
+ if (s->open_tag) {
+ g_source_remove(s->open_tag);
+ s->open_tag = 0;
+ }
+ remove_fd_in_watch(chr);
+ s->connected = 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. */
+ pty_chr_rearm_timer(chr, 1000);
+ } else {
+ if (s->timer_tag) {
+ g_source_remove(s->timer_tag);
+ s->timer_tag = 0;
+ }
+ if (!s->connected) {
+ g_assert(s->open_tag == 0);
+ s->connected = 1;
+ s->open_tag = g_idle_add(qemu_chr_be_generic_open_func, chr);
+ }
+ if (!chr->fd_in_tag) {
+ chr->fd_in_tag = io_add_watch_poll(s->fd, pty_chr_read_poll,
+ pty_chr_read, chr);
+ }
+ }
+}
+
+static void pty_chr_close(struct CharDriverState *chr)
+{
+ PtyCharDriver *s = chr->opaque;
+ int fd;
+
+ qemu_mutex_lock(&chr->chr_write_lock);
+ pty_chr_state(chr, 0);
+ fd = g_io_channel_unix_get_fd(s->fd);
+ g_io_channel_unref(s->fd);
+ close(fd);
+ if (s->timer_tag) {
+ g_source_remove(s->timer_tag);
+ s->timer_tag = 0;
+ }
+ qemu_mutex_unlock(&chr->chr_write_lock);
+ g_free(s);
+ qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
+}
+
+static CharDriverState *qemu_chr_open_pty(const char *id,
+ ChardevReturn *ret)
+{
+ CharDriverState *chr;
+ PtyCharDriver *s;
+ int master_fd, slave_fd;
+ char pty_name[PATH_MAX];
+
+ master_fd = qemu_openpty_raw(&slave_fd, pty_name);
+ if (master_fd < 0) {
+ return NULL;
+ }
+
+ close(slave_fd);
+ qemu_set_nonblock(master_fd);
+
+ chr = qemu_chr_alloc();
+
+ chr->filename = g_strdup_printf("pty:%s", pty_name);
+ ret->pty = g_strdup(pty_name);
+ ret->has_pty = true;
+
+ fprintf(stderr, "char device redirected to %s (label %s)\n",
+ pty_name, id);
+
+ 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;
+ chr->chr_add_watch = pty_chr_add_watch;
+ chr->explicit_be_open = true;
+
+ s->fd = io_channel_from_fd(master_fd);
+ s->timer_tag = 0;
+
+ 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(g_io_channel_unix_get_fd(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(g_io_channel_unix_get_fd(s->fd_in), 1);
+ }
+ }
+ break;
+ case CHR_IOCTL_SERIAL_GET_TIOCM:
+ {
+ int sarg = 0;
+ int *targ = (int *)arg;
+ ioctl(g_io_channel_unix_get_fd(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(g_io_channel_unix_get_fd(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(g_io_channel_unix_get_fd(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 = g_io_channel_unix_get_fd(s->fd_in);
+ }
+
+ fd_chr_close(chr);
+
+ if (fd >= 0) {
+ close(fd);
+ }
+}
+
+static CharDriverState *qemu_chr_open_tty_fd(int fd)
+{
+ CharDriverState *chr;
+
+ 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;
+}
+#endif /* __linux__ || __sun__ */
+
+#if defined(__linux__)
+
+#define HAVE_CHARDEV_PARPORT 1
+
+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_fd(int fd)
+{
+ CharDriverState *chr;
+ ParallelCharDriver *drv;
+
+ if (ioctl(fd, PPCLAIM) < 0) {
+ close(fd);
+ return NULL;
+ }
+
+ drv = g_malloc0(sizeof(ParallelCharDriver));
+ drv->fd = fd;
+ drv->mode = IEEE1284_MODE_COMPAT;
+
+ chr = qemu_chr_alloc();
+ chr->chr_write = null_chr_write;
+ chr->chr_ioctl = pp_ioctl;
+ chr->chr_close = pp_close;
+ chr->opaque = drv;
+
+ return chr;
+}
+#endif /* __linux__ */
+
+#if defined(__FreeBSD__) || defined(__FreeBSD_kernel__) || defined(__DragonFly__)
+
+#define HAVE_CHARDEV_PARPORT 1
+
+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_fd(int fd)
+{
+ CharDriverState *chr;
+
+ chr = qemu_chr_alloc();
+ chr->opaque = (void *)(intptr_t)fd;
+ chr->chr_write = null_chr_write;
+ chr->chr_ioctl = pp_ioctl;
+ chr->explicit_be_open = true;
+ return chr;
+}
+#endif
+
+#else /* _WIN32 */
+
+typedef struct {
+ int max_size;
+ HANDLE hcom, hrecv, hsend;
+ OVERLAPPED orecv;
+ BOOL fpipe;
+ DWORD len;
+
+ /* Protected by the CharDriverState chr_write_lock. */
+ OVERLAPPED osend;
+} 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;
+}
+
+/* Called with chr_write_lock held. */
+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_path(const char *filename)
+{
+ CharDriverState *chr;
+ WinCharState *s;
+
+ chr = qemu_chr_alloc();
+ 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;
+ }
+ 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[CHR_MAX_FILENAME_SIZE];
+
+ 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_pipe(ChardevHostdev *opts)
+{
+ const char *filename = opts->device;
+ CharDriverState *chr;
+ WinCharState *s;
+
+ chr = qemu_chr_alloc();
+ 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;
+ }
+ return chr;
+}
+
+static CharDriverState *qemu_chr_open_win_file(HANDLE fd_out)
+{
+ CharDriverState *chr;
+ WinCharState *s;
+
+ chr = qemu_chr_alloc();
+ s = g_malloc0(sizeof(WinCharState));
+ s->hcom = fd_out;
+ chr->opaque = s;
+ chr->chr_write = win_chr_write;
+ return chr;
+}
+
+static CharDriverState *qemu_chr_open_win_con(void)
+{
+ return qemu_chr_open_win_file(GetStdHandle(STD_OUTPUT_HANDLE));
+}
+
+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, ARRAY_SIZE(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);
+}
+
+static CharDriverState *qemu_chr_open_stdio(ChardevStdio *opts)
+{
+ CharDriverState *chr;
+ WinStdioCharState *stdio;
+ DWORD dwMode;
+ int is_console = 0;
+
+ chr = qemu_chr_alloc();
+ 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 (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;
+
+ if (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;
+ GIOChannel *chan;
+ uint8_t buf[READ_BUF_LEN];
+ int bufcnt;
+ int bufptr;
+ int max_size;
+} NetCharDriver;
+
+/* Called with chr_write_lock held. */
+static int udp_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
+{
+ NetCharDriver *s = chr->opaque;
+ gsize bytes_written;
+ GIOStatus status;
+
+ status = g_io_channel_write_chars(s->chan, (const gchar *)buf, len, &bytes_written, NULL);
+ if (status == G_IO_STATUS_EOF) {
+ return 0;
+ } else if (status != G_IO_STATUS_NORMAL) {
+ return -1;
+ }
+
+ return bytes_written;
+}
+
+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 gboolean udp_chr_read(GIOChannel *chan, GIOCondition cond, void *opaque)
+{
+ CharDriverState *chr = opaque;
+ NetCharDriver *s = chr->opaque;
+ gsize bytes_read = 0;
+ GIOStatus status;
+
+ if (s->max_size == 0) {
+ return TRUE;
+ }
+ status = g_io_channel_read_chars(s->chan, (gchar *)s->buf, sizeof(s->buf),
+ &bytes_read, NULL);
+ s->bufcnt = bytes_read;
+ s->bufptr = s->bufcnt;
+ if (status != G_IO_STATUS_NORMAL) {
+ remove_fd_in_watch(chr);
+ return FALSE;
+ }
+
+ 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);
+ }
+
+ return TRUE;
+}
+
+static void udp_chr_update_read_handler(CharDriverState *chr)
+{
+ NetCharDriver *s = chr->opaque;
+
+ remove_fd_in_watch(chr);
+ if (s->chan) {
+ chr->fd_in_tag = io_add_watch_poll(s->chan, udp_chr_read_poll,
+ udp_chr_read, chr);
+ }
+}
+
+static void udp_chr_close(CharDriverState *chr)
+{
+ NetCharDriver *s = chr->opaque;
+
+ remove_fd_in_watch(chr);
+ if (s->chan) {
+ g_io_channel_unref(s->chan);
+ closesocket(s->fd);
+ }
+ g_free(s);
+ qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
+}
+
+static CharDriverState *qemu_chr_open_udp_fd(int fd)
+{
+ CharDriverState *chr = NULL;
+ NetCharDriver *s = NULL;
+
+ chr = qemu_chr_alloc();
+ s = g_malloc0(sizeof(NetCharDriver));
+
+ s->fd = fd;
+ s->chan = io_channel_from_socket(s->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;
+ /* be isn't opened until we get a connection */
+ chr->explicit_be_open = true;
+ return chr;
+}
+
+/***********************************************************/
+/* TCP Net console */
+
+typedef struct {
+
+ GIOChannel *chan, *listen_chan;
+ guint listen_tag;
+ int fd, listen_fd;
+ int connected;
+ int max_size;
+ int do_telnetopt;
+ int do_nodelay;
+ int is_unix;
+ int *read_msgfds;
+ int read_msgfds_num;
+ int *write_msgfds;
+ int write_msgfds_num;
+
+ SocketAddress *addr;
+ bool is_listen;
+ bool is_telnet;
+
+ guint reconnect_timer;
+ int64_t reconnect_time;
+ bool connect_err_reported;
+} TCPCharDriver;
+
+static gboolean socket_reconnect_timeout(gpointer opaque);
+
+static void qemu_chr_socket_restart_timer(CharDriverState *chr)
+{
+ TCPCharDriver *s = chr->opaque;
+ assert(s->connected == 0);
+ s->reconnect_timer = g_timeout_add_seconds(s->reconnect_time,
+ socket_reconnect_timeout, chr);
+}
+
+static void check_report_connect_error(CharDriverState *chr,
+ Error *err)
+{
+ TCPCharDriver *s = chr->opaque;
+
+ if (!s->connect_err_reported) {
+ error_report("Unable to connect character device %s: %s",
+ chr->label, error_get_pretty(err));
+ s->connect_err_reported = true;
+ }
+ qemu_chr_socket_restart_timer(chr);
+}
+
+static gboolean tcp_chr_accept(GIOChannel *chan, GIOCondition cond, void *opaque);
+
+#ifndef _WIN32
+static int unix_send_msgfds(CharDriverState *chr, const uint8_t *buf, int len)
+{
+ TCPCharDriver *s = chr->opaque;
+ struct msghdr msgh;
+ struct iovec iov;
+ int r;
+
+ size_t fd_size = s->write_msgfds_num * sizeof(int);
+ char control[CMSG_SPACE(fd_size)];
+ struct cmsghdr *cmsg;
+
+ memset(&msgh, 0, sizeof(msgh));
+ memset(control, 0, sizeof(control));
+
+ /* set the payload */
+ iov.iov_base = (uint8_t *) buf;
+ iov.iov_len = len;
+
+ msgh.msg_iov = &iov;
+ msgh.msg_iovlen = 1;
+
+ msgh.msg_control = control;
+ msgh.msg_controllen = sizeof(control);
+
+ cmsg = CMSG_FIRSTHDR(&msgh);
+
+ cmsg->cmsg_len = CMSG_LEN(fd_size);
+ cmsg->cmsg_level = SOL_SOCKET;
+ cmsg->cmsg_type = SCM_RIGHTS;
+ memcpy(CMSG_DATA(cmsg), s->write_msgfds, fd_size);
+
+ do {
+ r = sendmsg(s->fd, &msgh, 0);
+ } while (r < 0 && errno == EINTR);
+
+ /* free the written msgfds, no matter what */
+ if (s->write_msgfds_num) {
+ g_free(s->write_msgfds);
+ s->write_msgfds = 0;
+ s->write_msgfds_num = 0;
+ }
+
+ return r;
+}
+#endif
+
+/* Called with chr_write_lock held. */
+static int tcp_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
+{
+ TCPCharDriver *s = chr->opaque;
+ if (s->connected) {
+#ifndef _WIN32
+ if (s->is_unix && s->write_msgfds_num) {
+ return unix_send_msgfds(chr, buf, len);
+ } else
+#endif
+ {
+ return io_channel_send(s->chan, 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_msgfds(CharDriverState *chr, int *fds, int num)
+{
+ TCPCharDriver *s = chr->opaque;
+ int to_copy = (s->read_msgfds_num < num) ? s->read_msgfds_num : num;
+
+ assert(num <= TCP_MAX_FDS);
+
+ if (to_copy) {
+ int i;
+
+ memcpy(fds, s->read_msgfds, to_copy * sizeof(int));
+
+ /* Close unused fds */
+ for (i = to_copy; i < s->read_msgfds_num; i++) {
+ close(s->read_msgfds[i]);
+ }
+
+ g_free(s->read_msgfds);
+ s->read_msgfds = 0;
+ s->read_msgfds_num = 0;
+ }
+
+ return to_copy;
+}
+
+static int tcp_set_msgfds(CharDriverState *chr, int *fds, int num)
+{
+ TCPCharDriver *s = chr->opaque;
+
+ /* clear old pending fd array */
+ if (s->write_msgfds) {
+ g_free(s->write_msgfds);
+ }
+
+ if (num) {
+ s->write_msgfds = g_malloc(num * sizeof(int));
+ memcpy(s->write_msgfds, fds, num * sizeof(int));
+ }
+
+ s->write_msgfds_num = num;
+
+ return 0;
+}
+
+#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_size, i;
+
+ if (cmsg->cmsg_len < CMSG_LEN(sizeof(int)) ||
+ cmsg->cmsg_level != SOL_SOCKET ||
+ cmsg->cmsg_type != SCM_RIGHTS) {
+ continue;
+ }
+
+ fd_size = cmsg->cmsg_len - CMSG_LEN(0);
+
+ if (!fd_size) {
+ continue;
+ }
+
+ /* close and clean read_msgfds */
+ for (i = 0; i < s->read_msgfds_num; i++) {
+ close(s->read_msgfds[i]);
+ }
+
+ if (s->read_msgfds_num) {
+ g_free(s->read_msgfds);
+ }
+
+ s->read_msgfds_num = fd_size / sizeof(int);
+ s->read_msgfds = g_malloc(fd_size);
+ memcpy(s->read_msgfds, CMSG_DATA(cmsg), fd_size);
+
+ for (i = 0; i < s->read_msgfds_num; i++) {
+ int fd = s->read_msgfds[i];
+ if (fd < 0) {
+ continue;
+ }
+
+ /* O_NONBLOCK is preserved across SCM_RIGHTS so reset it */
+ qemu_set_block(fd);
+
+ #ifndef MSG_CMSG_CLOEXEC
+ qemu_set_cloexec(fd);
+ #endif
+ }
+ }
+}
+
+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) * TCP_MAX_FDS)];
+ } 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
+ do {
+ ret = recvmsg(s->fd, &msg, flags);
+ } while (ret == -1 && errno == EINTR);
+
+ 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;
+ ssize_t ret;
+
+ do {
+ ret = qemu_recv(s->fd, buf, len, 0);
+ } while (ret == -1 && socket_error() == EINTR);
+
+ return ret;
+}
+#endif
+
+static GSource *tcp_chr_add_watch(CharDriverState *chr, GIOCondition cond)
+{
+ TCPCharDriver *s = chr->opaque;
+ return g_io_create_watch(s->chan, cond);
+}
+
+static void tcp_chr_disconnect(CharDriverState *chr)
+{
+ TCPCharDriver *s = chr->opaque;
+
+ s->connected = 0;
+ if (s->listen_chan) {
+ s->listen_tag = g_io_add_watch(s->listen_chan, G_IO_IN,
+ tcp_chr_accept, chr);
+ }
+ remove_fd_in_watch(chr);
+ g_io_channel_unref(s->chan);
+ s->chan = NULL;
+ closesocket(s->fd);
+ s->fd = -1;
+ SocketAddress_to_str(chr->filename, CHR_MAX_FILENAME_SIZE,
+ "disconnected:", s->addr, s->is_listen, s->is_telnet);
+ qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
+ if (s->reconnect_time) {
+ qemu_chr_socket_restart_timer(chr);
+ }
+}
+
+static gboolean tcp_chr_read(GIOChannel *chan, GIOCondition cond, 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 TRUE;
+ }
+ len = sizeof(buf);
+ if (len > s->max_size)
+ len = s->max_size;
+ size = tcp_chr_recv(chr, (void *)buf, len);
+ if (size == 0 ||
+ (size < 0 &&
+ socket_error() != EAGAIN && socket_error() != EWOULDBLOCK)) {
+ /* connection closed */
+ tcp_chr_disconnect(chr);
+ } 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);
+ }
+
+ return TRUE;
+}
+
+static int tcp_chr_sync_read(CharDriverState *chr, const uint8_t *buf, int len)
+{
+ TCPCharDriver *s = chr->opaque;
+ int size;
+
+ if (!s->connected) {
+ return 0;
+ }
+
+ size = tcp_chr_recv(chr, (void *) buf, len);
+ if (size == 0) {
+ /* connection closed */
+ tcp_chr_disconnect(chr);
+ }
+
+ return size;
+}
+
+#ifndef _WIN32
+CharDriverState *qemu_chr_open_eventfd(int eventfd)
+{
+ CharDriverState *chr = qemu_chr_open_fd(eventfd, eventfd);
+
+ if (chr) {
+ chr->avail_connections = 1;
+ }
+
+ return chr;
+}
+#endif
+
+static void tcp_chr_connect(void *opaque)
+{
+ CharDriverState *chr = opaque;
+ TCPCharDriver *s = chr->opaque;
+ struct sockaddr_storage ss, ps;
+ socklen_t ss_len = sizeof(ss), ps_len = sizeof(ps);
+
+ memset(&ss, 0, ss_len);
+ if (getsockname(s->fd, (struct sockaddr *) &ss, &ss_len) != 0) {
+ snprintf(chr->filename, CHR_MAX_FILENAME_SIZE,
+ "Error in getsockname: %s\n", strerror(errno));
+ } else if (getpeername(s->fd, (struct sockaddr *) &ps, &ps_len) != 0) {
+ snprintf(chr->filename, CHR_MAX_FILENAME_SIZE,
+ "Error in getpeername: %s\n", strerror(errno));
+ } else {
+ sockaddr_to_str(chr->filename, CHR_MAX_FILENAME_SIZE,
+ &ss, ss_len, &ps, ps_len,
+ s->is_listen, s->is_telnet);
+ }
+
+ s->connected = 1;
+ if (s->chan) {
+ chr->fd_in_tag = io_add_watch_poll(s->chan, tcp_chr_read_poll,
+ tcp_chr_read, chr);
+ }
+ qemu_chr_be_generic_open(chr);
+}
+
+static void tcp_chr_update_read_handler(CharDriverState *chr)
+{
+ TCPCharDriver *s = chr->opaque;
+
+ remove_fd_in_watch(chr);
+ if (s->chan) {
+ chr->fd_in_tag = io_add_watch_poll(s->chan, tcp_chr_read_poll,
+ tcp_chr_read, 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 int tcp_chr_add_client(CharDriverState *chr, int fd)
+{
+ TCPCharDriver *s = chr->opaque;
+ if (s->fd != -1)
+ return -1;
+
+ qemu_set_nonblock(fd);
+ if (s->do_nodelay)
+ socket_set_nodelay(fd);
+ s->fd = fd;
+ s->chan = io_channel_from_socket(fd);
+ if (s->listen_tag) {
+ g_source_remove(s->listen_tag);
+ s->listen_tag = 0;
+ }
+ tcp_chr_connect(chr);
+
+ return 0;
+}
+
+static gboolean tcp_chr_accept(GIOChannel *channel, GIOCondition cond, 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) {
+ s->listen_tag = 0;
+ return FALSE;
+ } else if (fd >= 0) {
+ if (s->do_telnetopt)
+ tcp_chr_telnet_init(fd);
+ break;
+ }
+ }
+ if (tcp_chr_add_client(chr, fd) < 0)
+ close(fd);
+
+ return TRUE;
+}
+
+static void tcp_chr_close(CharDriverState *chr)
+{
+ TCPCharDriver *s = chr->opaque;
+ int i;
+
+ if (s->reconnect_timer) {
+ g_source_remove(s->reconnect_timer);
+ s->reconnect_timer = 0;
+ }
+ qapi_free_SocketAddress(s->addr);
+ if (s->fd >= 0) {
+ remove_fd_in_watch(chr);
+ if (s->chan) {
+ g_io_channel_unref(s->chan);
+ }
+ closesocket(s->fd);
+ }
+ if (s->listen_fd >= 0) {
+ if (s->listen_tag) {
+ g_source_remove(s->listen_tag);
+ s->listen_tag = 0;
+ }
+ if (s->listen_chan) {
+ g_io_channel_unref(s->listen_chan);
+ }
+ closesocket(s->listen_fd);
+ }
+ if (s->read_msgfds_num) {
+ for (i = 0; i < s->read_msgfds_num; i++) {
+ close(s->read_msgfds[i]);
+ }
+ g_free(s->read_msgfds);
+ }
+ if (s->write_msgfds_num) {
+ g_free(s->write_msgfds);
+ }
+ g_free(s);
+ qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
+}
+
+static void qemu_chr_finish_socket_connection(CharDriverState *chr, int fd)
+{
+ TCPCharDriver *s = chr->opaque;
+
+ if (s->is_listen) {
+ s->listen_fd = fd;
+ s->listen_chan = io_channel_from_socket(s->listen_fd);
+ s->listen_tag = g_io_add_watch(s->listen_chan, G_IO_IN,
+ tcp_chr_accept, chr);
+ } else {
+ s->connected = 1;
+ s->fd = fd;
+ socket_set_nodelay(fd);
+ s->chan = io_channel_from_socket(s->fd);
+ tcp_chr_connect(chr);
+ }
+}
+
+static void qemu_chr_socket_connected(int fd, Error *err, void *opaque)
+{
+ CharDriverState *chr = opaque;
+ TCPCharDriver *s = chr->opaque;
+
+ if (fd < 0) {
+ check_report_connect_error(chr, err);
+ return;
+ }
+
+ s->connect_err_reported = false;
+ qemu_chr_finish_socket_connection(chr, fd);
+}
+
+static bool qemu_chr_open_socket_fd(CharDriverState *chr, Error **errp)
+{
+ TCPCharDriver *s = chr->opaque;
+ int fd;
+
+ if (s->is_listen) {
+ fd = socket_listen(s->addr, errp);
+ } else if (s->reconnect_time) {
+ fd = socket_connect(s->addr, errp, qemu_chr_socket_connected, chr);
+ return fd >= 0;
+ } else {
+ fd = socket_connect(s->addr, errp, NULL, NULL);
+ }
+ if (fd < 0) {
+ return false;
+ }
+
+ qemu_chr_finish_socket_connection(chr, fd);
+ return true;
+}
+
+/*********************************************************/
+/* Ring buffer chardev */
+
+typedef struct {
+ size_t size;
+ size_t prod;
+ size_t cons;
+ uint8_t *cbuf;
+} RingBufCharDriver;
+
+static size_t ringbuf_count(const CharDriverState *chr)
+{
+ const RingBufCharDriver *d = chr->opaque;
+
+ return d->prod - d->cons;
+}
+
+/* Called with chr_write_lock held. */
+static int ringbuf_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
+{
+ RingBufCharDriver *d = chr->opaque;
+ int i;
+
+ if (!buf || (len < 0)) {
+ return -1;
+ }
+
+ for (i = 0; i < len; i++ ) {
+ d->cbuf[d->prod++ & (d->size - 1)] = buf[i];
+ if (d->prod - d->cons > d->size) {
+ d->cons = d->prod - d->size;
+ }
+ }
+
+ return 0;
+}
+
+static int ringbuf_chr_read(CharDriverState *chr, uint8_t *buf, int len)
+{
+ RingBufCharDriver *d = chr->opaque;
+ int i;
+
+ qemu_mutex_lock(&chr->chr_write_lock);
+ for (i = 0; i < len && d->cons != d->prod; i++) {
+ buf[i] = d->cbuf[d->cons++ & (d->size - 1)];
+ }
+ qemu_mutex_unlock(&chr->chr_write_lock);
+
+ return i;
+}
+
+static void ringbuf_chr_close(struct CharDriverState *chr)
+{
+ RingBufCharDriver *d = chr->opaque;
+
+ g_free(d->cbuf);
+ g_free(d);
+ chr->opaque = NULL;
+}
+
+static CharDriverState *qemu_chr_open_ringbuf(ChardevRingbuf *opts,
+ Error **errp)
+{
+ CharDriverState *chr;
+ RingBufCharDriver *d;
+
+ chr = qemu_chr_alloc();
+ d = g_malloc(sizeof(*d));
+
+ d->size = opts->has_size ? opts->size : 65536;
+
+ /* The size must be power of 2 */
+ if (d->size & (d->size - 1)) {
+ error_setg(errp, "size of ringbuf chardev must be power of two");
+ goto fail;
+ }
+
+ d->prod = 0;
+ d->cons = 0;
+ d->cbuf = g_malloc0(d->size);
+
+ chr->opaque = d;
+ chr->chr_write = ringbuf_chr_write;
+ chr->chr_close = ringbuf_chr_close;
+
+ return chr;
+
+fail:
+ g_free(d);
+ g_free(chr);
+ return NULL;
+}
+
+bool chr_is_ringbuf(const CharDriverState *chr)
+{
+ return chr->chr_write == ringbuf_chr_write;
+}
+
+void qmp_ringbuf_write(const char *device, const char *data,
+ bool has_format, enum DataFormat format,
+ Error **errp)
+{
+ CharDriverState *chr;
+ const uint8_t *write_data;
+ int ret;
+ gsize write_count;
+
+ chr = qemu_chr_find(device);
+ if (!chr) {
+ error_setg(errp, "Device '%s' not found", device);
+ return;
+ }
+
+ if (!chr_is_ringbuf(chr)) {
+ error_setg(errp,"%s is not a ringbuf device", device);
+ return;
+ }
+
+ if (has_format && (format == DATA_FORMAT_BASE64)) {
+ write_data = g_base64_decode(data, &write_count);
+ } else {
+ write_data = (uint8_t *)data;
+ write_count = strlen(data);
+ }
+
+ ret = ringbuf_chr_write(chr, write_data, write_count);
+
+ if (write_data != (uint8_t *)data) {
+ g_free((void *)write_data);
+ }
+
+ if (ret < 0) {
+ error_setg(errp, "Failed to write to device %s", device);
+ return;
+ }
+}
+
+char *qmp_ringbuf_read(const char *device, int64_t size,
+ bool has_format, enum DataFormat format,
+ Error **errp)
+{
+ CharDriverState *chr;
+ uint8_t *read_data;
+ size_t count;
+ char *data;
+
+ chr = qemu_chr_find(device);
+ if (!chr) {
+ error_setg(errp, "Device '%s' not found", device);
+ return NULL;
+ }
+
+ if (!chr_is_ringbuf(chr)) {
+ error_setg(errp,"%s is not a ringbuf device", device);
+ return NULL;
+ }
+
+ if (size <= 0) {
+ error_setg(errp, "size must be greater than zero");
+ return NULL;
+ }
+
+ count = ringbuf_count(chr);
+ size = size > count ? count : size;
+ read_data = g_malloc(size + 1);
+
+ ringbuf_chr_read(chr, read_data, size);
+
+ if (has_format && (format == DATA_FORMAT_BASE64)) {
+ data = g_base64_encode(read_data, size);
+ g_free(read_data);
+ } else {
+ /*
+ * FIXME should read only complete, valid UTF-8 characters up
+ * to @size bytes. Invalid sequences should be replaced by a
+ * suitable replacement character. Except when (and only
+ * when) ring buffer lost characters since last read, initial
+ * continuation characters should be dropped.
+ */
+ read_data[size] = 0;
+ data = (char *)read_data;
+ }
+
+ return data;
+}
+
+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 (local_err) {
+ error_report_err(local_err);
+ return NULL;
+ }
+
+ if (strstart(filename, "mon:", &p)) {
+ filename = p;
+ qemu_opt_set(opts, "mux", "on", &error_abort);
+ if (strcmp(filename, "stdio") == 0) {
+ /* Monitor is muxed to stdio: do not exit on Ctrl+C by default
+ * but pass it to the guest. Handle this only for compat syntax,
+ * for -chardev syntax we have special option for this.
+ * This is what -nographic did, redirecting+muxing serial+monitor
+ * to stdio causing Ctrl+C to be passed to guest. */
+ qemu_opt_set(opts, "signal", "off", &error_abort);
+ }
+ }
+
+ if (strcmp(filename, "null") == 0 ||
+ strcmp(filename, "pty") == 0 ||
+ strcmp(filename, "msmouse") == 0 ||
+ strcmp(filename, "braille") == 0 ||
+ strcmp(filename, "testdev") == 0 ||
+ strcmp(filename, "stdio") == 0) {
+ qemu_opt_set(opts, "backend", filename, &error_abort);
+ return opts;
+ }
+ if (strstart(filename, "vc", &p)) {
+ qemu_opt_set(opts, "backend", "vc", &error_abort);
+ if (*p == ':') {
+ if (sscanf(p+1, "%7[0-9]x%7[0-9]", width, height) == 2) {
+ /* pixels */
+ qemu_opt_set(opts, "width", width, &error_abort);
+ qemu_opt_set(opts, "height", height, &error_abort);
+ } else if (sscanf(p+1, "%7[0-9]Cx%7[0-9]C", width, height) == 2) {
+ /* chars */
+ qemu_opt_set(opts, "cols", width, &error_abort);
+ qemu_opt_set(opts, "rows", height, &error_abort);
+ } else {
+ goto fail;
+ }
+ }
+ return opts;
+ }
+ if (strcmp(filename, "con:") == 0) {
+ qemu_opt_set(opts, "backend", "console", &error_abort);
+ return opts;
+ }
+ if (strstart(filename, "COM", NULL)) {
+ qemu_opt_set(opts, "backend", "serial", &error_abort);
+ qemu_opt_set(opts, "path", filename, &error_abort);
+ return opts;
+ }
+ if (strstart(filename, "file:", &p)) {
+ qemu_opt_set(opts, "backend", "file", &error_abort);
+ qemu_opt_set(opts, "path", p, &error_abort);
+ return opts;
+ }
+ if (strstart(filename, "pipe:", &p)) {
+ qemu_opt_set(opts, "backend", "pipe", &error_abort);
+ qemu_opt_set(opts, "path", p, &error_abort);
+ 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", &error_abort);
+ qemu_opt_set(opts, "host", host, &error_abort);
+ qemu_opt_set(opts, "port", port, &error_abort);
+ if (p[pos] == ',') {
+ qemu_opts_do_parse(opts, p+pos+1, NULL, &local_err);
+ if (local_err) {
+ error_report_err(local_err);
+ goto fail;
+ }
+ }
+ if (strstart(filename, "telnet:", &p))
+ qemu_opt_set(opts, "telnet", "on", &error_abort);
+ return opts;
+ }
+ if (strstart(filename, "udp:", &p)) {
+ qemu_opt_set(opts, "backend", "udp", &error_abort);
+ 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, &error_abort);
+ qemu_opt_set(opts, "port", port, &error_abort);
+ 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, &error_abort);
+ qemu_opt_set(opts, "localport", port, &error_abort);
+ }
+ return opts;
+ }
+ if (strstart(filename, "unix:", &p)) {
+ qemu_opt_set(opts, "backend", "socket", &error_abort);
+ qemu_opts_do_parse(opts, p, "path", &local_err);
+ if (local_err) {
+ error_report_err(local_err);
+ goto fail;
+ }
+ return opts;
+ }
+ if (strstart(filename, "/dev/parport", NULL) ||
+ strstart(filename, "/dev/ppi", NULL)) {
+ qemu_opt_set(opts, "backend", "parport", &error_abort);
+ qemu_opt_set(opts, "path", filename, &error_abort);
+ return opts;
+ }
+ if (strstart(filename, "/dev/", NULL)) {
+ qemu_opt_set(opts, "backend", "tty", &error_abort);
+ qemu_opt_set(opts, "path", filename, &error_abort);
+ return opts;
+ }
+
+fail:
+ qemu_opts_del(opts);
+ return NULL;
+}
+
+static void qemu_chr_parse_file_out(QemuOpts *opts, ChardevBackend *backend,
+ Error **errp)
+{
+ const char *path = qemu_opt_get(opts, "path");
+
+ if (path == NULL) {
+ error_setg(errp, "chardev: file: no filename given");
+ return;
+ }
+ backend->file = g_new0(ChardevFile, 1);
+ backend->file->out = g_strdup(path);
+}
+
+static void qemu_chr_parse_stdio(QemuOpts *opts, ChardevBackend *backend,
+ Error **errp)
+{
+ backend->stdio = g_new0(ChardevStdio, 1);
+ backend->stdio->has_signal = true;
+ backend->stdio->signal = qemu_opt_get_bool(opts, "signal", true);
+}
+
+static void qemu_chr_parse_serial(QemuOpts *opts, ChardevBackend *backend,
+ Error **errp)
+{
+ const char *device = qemu_opt_get(opts, "path");
+
+ if (device == NULL) {
+ error_setg(errp, "chardev: serial/tty: no device path given");
+ return;
+ }
+ backend->serial = g_new0(ChardevHostdev, 1);
+ backend->serial->device = g_strdup(device);
+}
+
+static void qemu_chr_parse_parallel(QemuOpts *opts, ChardevBackend *backend,
+ Error **errp)
+{
+ const char *device = qemu_opt_get(opts, "path");
+
+ if (device == NULL) {
+ error_setg(errp, "chardev: parallel: no device path given");
+ return;
+ }
+ backend->parallel = g_new0(ChardevHostdev, 1);
+ backend->parallel->device = g_strdup(device);
+}
+
+static void qemu_chr_parse_pipe(QemuOpts *opts, ChardevBackend *backend,
+ Error **errp)
+{
+ const char *device = qemu_opt_get(opts, "path");
+
+ if (device == NULL) {
+ error_setg(errp, "chardev: pipe: no device path given");
+ return;
+ }
+ backend->pipe = g_new0(ChardevHostdev, 1);
+ backend->pipe->device = g_strdup(device);
+}
+
+static void qemu_chr_parse_ringbuf(QemuOpts *opts, ChardevBackend *backend,
+ Error **errp)
+{
+ int val;
+
+ backend->ringbuf = g_new0(ChardevRingbuf, 1);
+
+ val = qemu_opt_get_size(opts, "size", 0);
+ if (val != 0) {
+ backend->ringbuf->has_size = true;
+ backend->ringbuf->size = val;
+ }
+}
+
+static void qemu_chr_parse_mux(QemuOpts *opts, ChardevBackend *backend,
+ Error **errp)
+{
+ const char *chardev = qemu_opt_get(opts, "chardev");
+
+ if (chardev == NULL) {
+ error_setg(errp, "chardev: mux: no chardev given");
+ return;
+ }
+ backend->mux = g_new0(ChardevMux, 1);
+ backend->mux->chardev = g_strdup(chardev);
+}
+
+static void qemu_chr_parse_socket(QemuOpts *opts, ChardevBackend *backend,
+ Error **errp)
+{
+ bool is_listen = qemu_opt_get_bool(opts, "server", false);
+ bool is_waitconnect = is_listen && qemu_opt_get_bool(opts, "wait", true);
+ bool is_telnet = qemu_opt_get_bool(opts, "telnet", false);
+ bool do_nodelay = !qemu_opt_get_bool(opts, "delay", true);
+ int64_t reconnect = qemu_opt_get_number(opts, "reconnect", 0);
+ const char *path = qemu_opt_get(opts, "path");
+ const char *host = qemu_opt_get(opts, "host");
+ const char *port = qemu_opt_get(opts, "port");
+ SocketAddress *addr;
+
+ if (!path) {
+ if (!host) {
+ error_setg(errp, "chardev: socket: no host given");
+ return;
+ }
+ if (!port) {
+ error_setg(errp, "chardev: socket: no port given");
+ return;
+ }
+ }
+
+ backend->socket = g_new0(ChardevSocket, 1);
+
+ backend->socket->has_nodelay = true;
+ backend->socket->nodelay = do_nodelay;
+ backend->socket->has_server = true;
+ backend->socket->server = is_listen;
+ backend->socket->has_telnet = true;
+ backend->socket->telnet = is_telnet;
+ backend->socket->has_wait = true;
+ backend->socket->wait = is_waitconnect;
+ backend->socket->has_reconnect = true;
+ backend->socket->reconnect = reconnect;
+
+ addr = g_new0(SocketAddress, 1);
+ if (path) {
+ addr->kind = SOCKET_ADDRESS_KIND_UNIX;
+ addr->q_unix = g_new0(UnixSocketAddress, 1);
+ addr->q_unix->path = g_strdup(path);
+ } else {
+ addr->kind = SOCKET_ADDRESS_KIND_INET;
+ addr->inet = g_new0(InetSocketAddress, 1);
+ addr->inet->host = g_strdup(host);
+ addr->inet->port = g_strdup(port);
+ addr->inet->has_to = qemu_opt_get(opts, "to");
+ addr->inet->to = qemu_opt_get_number(opts, "to", 0);
+ addr->inet->has_ipv4 = qemu_opt_get(opts, "ipv4");
+ addr->inet->ipv4 = qemu_opt_get_bool(opts, "ipv4", 0);
+ addr->inet->has_ipv6 = qemu_opt_get(opts, "ipv6");
+ addr->inet->ipv6 = qemu_opt_get_bool(opts, "ipv6", 0);
+ }
+ backend->socket->addr = addr;
+}
+
+static void qemu_chr_parse_udp(QemuOpts *opts, ChardevBackend *backend,
+ Error **errp)
+{
+ const char *host = qemu_opt_get(opts, "host");
+ const char *port = qemu_opt_get(opts, "port");
+ const char *localaddr = qemu_opt_get(opts, "localaddr");
+ const char *localport = qemu_opt_get(opts, "localport");
+ bool has_local = false;
+ SocketAddress *addr;
+
+ if (host == NULL || strlen(host) == 0) {
+ host = "localhost";
+ }
+ if (port == NULL || strlen(port) == 0) {
+ error_setg(errp, "chardev: udp: remote port not specified");
+ return;
+ }
+ if (localport == NULL || strlen(localport) == 0) {
+ localport = "0";
+ } else {
+ has_local = true;
+ }
+ if (localaddr == NULL || strlen(localaddr) == 0) {
+ localaddr = "";
+ } else {
+ has_local = true;
+ }
+
+ backend->udp = g_new0(ChardevUdp, 1);
+
+ addr = g_new0(SocketAddress, 1);
+ addr->kind = SOCKET_ADDRESS_KIND_INET;
+ addr->inet = g_new0(InetSocketAddress, 1);
+ addr->inet->host = g_strdup(host);
+ addr->inet->port = g_strdup(port);
+ addr->inet->has_ipv4 = qemu_opt_get(opts, "ipv4");
+ addr->inet->ipv4 = qemu_opt_get_bool(opts, "ipv4", 0);
+ addr->inet->has_ipv6 = qemu_opt_get(opts, "ipv6");
+ addr->inet->ipv6 = qemu_opt_get_bool(opts, "ipv6", 0);
+ backend->udp->remote = addr;
+
+ if (has_local) {
+ backend->udp->has_local = true;
+ addr = g_new0(SocketAddress, 1);
+ addr->kind = SOCKET_ADDRESS_KIND_INET;
+ addr->inet = g_new0(InetSocketAddress, 1);
+ addr->inet->host = g_strdup(localaddr);
+ addr->inet->port = g_strdup(localport);
+ backend->udp->local = addr;
+ }
+}
+
+typedef struct CharDriver {
+ const char *name;
+ ChardevBackendKind kind;
+ void (*parse)(QemuOpts *opts, ChardevBackend *backend, Error **errp);
+} CharDriver;
+
+static GSList *backends;
+
+void register_char_driver(const char *name, ChardevBackendKind kind,
+ void (*parse)(QemuOpts *opts, ChardevBackend *backend, Error **errp))
+{
+ CharDriver *s;
+
+ s = g_malloc0(sizeof(*s));
+ s->name = g_strdup(name);
+ s->kind = kind;
+ s->parse = parse;
+
+ backends = g_slist_append(backends, s);
+}
+
+CharDriverState *qemu_chr_new_from_opts(QemuOpts *opts,
+ void (*init)(struct CharDriverState *s),
+ Error **errp)
+{
+ Error *local_err = NULL;
+ CharDriver *cd;
+ CharDriverState *chr;
+ GSList *i;
+ ChardevReturn *ret = NULL;
+ ChardevBackend *backend;
+ const char *id = qemu_opts_id(opts);
+ char *bid = NULL;
+
+ if (id == NULL) {
+ error_setg(errp, "chardev: no id specified");
+ goto err;
+ }
+
+ if (qemu_opt_get(opts, "backend") == NULL) {
+ error_setg(errp, "chardev: \"%s\" missing backend",
+ qemu_opts_id(opts));
+ goto err;
+ }
+ for (i = backends; i; i = i->next) {
+ cd = i->data;
+
+ if (strcmp(cd->name, qemu_opt_get(opts, "backend")) == 0) {
+ break;
+ }
+ }
+ if (i == NULL) {
+ error_setg(errp, "chardev: backend \"%s\" not found",
+ qemu_opt_get(opts, "backend"));
+ goto err;
+ }
+
+ backend = g_new0(ChardevBackend, 1);
+
+ if (qemu_opt_get_bool(opts, "mux", 0)) {
+ bid = g_strdup_printf("%s-base", id);
+ }
+
+ chr = NULL;
+ backend->kind = cd->kind;
+ if (cd->parse) {
+ cd->parse(opts, backend, &local_err);
+ if (local_err) {
+ error_propagate(errp, local_err);
+ goto qapi_out;
+ }
+ }
+ ret = qmp_chardev_add(bid ? bid : id, backend, errp);
+ if (!ret) {
+ goto qapi_out;
+ }
+
+ if (bid) {
+ qapi_free_ChardevBackend(backend);
+ qapi_free_ChardevReturn(ret);
+ backend = g_new0(ChardevBackend, 1);
+ backend->mux = g_new0(ChardevMux, 1);
+ backend->kind = CHARDEV_BACKEND_KIND_MUX;
+ backend->mux->chardev = g_strdup(bid);
+ ret = qmp_chardev_add(id, backend, errp);
+ if (!ret) {
+ chr = qemu_chr_find(bid);
+ qemu_chr_delete(chr);
+ chr = NULL;
+ goto qapi_out;
+ }
+ }
+
+ chr = qemu_chr_find(id);
+ chr->opts = opts;
+
+qapi_out:
+ qapi_free_ChardevBackend(backend);
+ qapi_free_ChardevReturn(ret);
+ g_free(bid);
+ return chr;
+
+err:
+ qemu_opts_del(opts);
+ return NULL;
+}
+
+CharDriverState *qemu_chr_new(const char *label, const char *filename, void (*init)(struct CharDriverState *s))
+{
+ const char *p;
+ CharDriverState *chr;
+ QemuOpts *opts;
+ Error *err = NULL;
+
+ 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, &err);
+ if (err) {
+ error_report_err(err);
+ }
+ if (chr && qemu_opt_get_bool(opts, "mux", 0)) {
+ qemu_chr_fe_claim_no_fail(chr);
+ monitor_init(chr, MONITOR_USE_READLINE);
+ }
+ 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_set_open(struct CharDriverState *chr, int fe_open)
+{
+ if (chr->fe_open == fe_open) {
+ return;
+ }
+ chr->fe_open = fe_open;
+ if (chr->chr_set_fe_open) {
+ chr->chr_set_fe_open(chr, fe_open);
+ }
+}
+
+void qemu_chr_fe_event(struct CharDriverState *chr, int event)
+{
+ if (chr->chr_fe_event) {
+ chr->chr_fe_event(chr, event);
+ }
+}
+
+int qemu_chr_fe_add_watch(CharDriverState *s, GIOCondition cond,
+ GIOFunc func, void *user_data)
+{
+ GSource *src;
+ guint tag;
+
+ if (s->chr_add_watch == NULL) {
+ return -ENOSYS;
+ }
+
+ src = s->chr_add_watch(s, cond);
+ if (!src) {
+ return -EINVAL;
+ }
+
+ g_source_set_callback(src, (GSourceFunc)func, user_data, NULL);
+ tag = g_source_attach(src, NULL);
+ g_source_unref(src);
+
+ return tag;
+}
+
+int qemu_chr_fe_claim(CharDriverState *s)
+{
+ if (s->avail_connections < 1) {
+ return -1;
+ }
+ s->avail_connections--;
+ return 0;
+}
+
+void qemu_chr_fe_claim_no_fail(CharDriverState *s)
+{
+ if (qemu_chr_fe_claim(s) != 0) {
+ fprintf(stderr, "%s: error chardev \"%s\" already used\n",
+ __func__, s->label);
+ exit(1);
+ }
+}
+
+void qemu_chr_fe_release(CharDriverState *s)
+{
+ s->avail_connections++;
+}
+
+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);
+ qemu_opts_del(chr->opts);
+ 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->value->frontend_open = chr->fe_open;
+
+ info->next = chr_list;
+ chr_list = info;
+ }
+
+ return chr_list;
+}
+
+ChardevBackendInfoList *qmp_query_chardev_backends(Error **errp)
+{
+ ChardevBackendInfoList *backend_list = NULL;
+ CharDriver *c = NULL;
+ GSList *i = NULL;
+
+ for (i = backends; i; i = i->next) {
+ ChardevBackendInfoList *info = g_malloc0(sizeof(*info));
+ c = i->data;
+ info->value = g_malloc0(sizeof(*info->value));
+ info->value->name = g_strdup(c->name);
+
+ info->next = backend_list;
+ backend_list = info;
+ }
+
+ return backend_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;
+ CharDriverState *chr;
+
+ /* FIXME: This function needs to go away: use chardev properties! */
+
+ while (next_serial < MAX_SERIAL_PORTS && serial_hds[next_serial]) {
+ chr = serial_hds[next_serial++];
+ qemu_chr_fe_claim_no_fail(chr);
+ return chr;
+ }
+ return NULL;
+}
+
+QemuOptsList qemu_chardev_opts = {
+ .name = "chardev",
+ .implied_opt_name = "backend",
+ .head = QTAILQ_HEAD_INITIALIZER(qemu_chardev_opts.head),
+ .desc = {
+ {
+ .name = "backend",
+ .type = QEMU_OPT_STRING,
+ },{
+ .name = "path",
+ .type = QEMU_OPT_STRING,
+ },{
+ .name = "host",
+ .type = QEMU_OPT_STRING,
+ },{
+ .name = "port",
+ .type = QEMU_OPT_STRING,
+ },{
+ .name = "localaddr",
+ .type = QEMU_OPT_STRING,
+ },{
+ .name = "localport",
+ .type = QEMU_OPT_STRING,
+ },{
+ .name = "to",
+ .type = QEMU_OPT_NUMBER,
+ },{
+ .name = "ipv4",
+ .type = QEMU_OPT_BOOL,
+ },{
+ .name = "ipv6",
+ .type = QEMU_OPT_BOOL,
+ },{
+ .name = "wait",
+ .type = QEMU_OPT_BOOL,
+ },{
+ .name = "server",
+ .type = QEMU_OPT_BOOL,
+ },{
+ .name = "delay",
+ .type = QEMU_OPT_BOOL,
+ },{
+ .name = "reconnect",
+ .type = QEMU_OPT_NUMBER,
+ },{
+ .name = "telnet",
+ .type = QEMU_OPT_BOOL,
+ },{
+ .name = "width",
+ .type = QEMU_OPT_NUMBER,
+ },{
+ .name = "height",
+ .type = QEMU_OPT_NUMBER,
+ },{
+ .name = "cols",
+ .type = QEMU_OPT_NUMBER,
+ },{
+ .name = "rows",
+ .type = QEMU_OPT_NUMBER,
+ },{
+ .name = "mux",
+ .type = QEMU_OPT_BOOL,
+ },{
+ .name = "signal",
+ .type = QEMU_OPT_BOOL,
+ },{
+ .name = "name",
+ .type = QEMU_OPT_STRING,
+ },{
+ .name = "debug",
+ .type = QEMU_OPT_NUMBER,
+ },{
+ .name = "size",
+ .type = QEMU_OPT_SIZE,
+ },{
+ .name = "chardev",
+ .type = QEMU_OPT_STRING,
+ },
+ { /* end of list */ }
+ },
+};
+
+#ifdef _WIN32
+
+static CharDriverState *qmp_chardev_open_file(ChardevFile *file, Error **errp)
+{
+ HANDLE out;
+
+ if (file->has_in) {
+ error_setg(errp, "input file not supported");
+ return NULL;
+ }
+
+ out = CreateFile(file->out, GENERIC_WRITE, FILE_SHARE_READ, NULL,
+ OPEN_ALWAYS, FILE_ATTRIBUTE_NORMAL, NULL);
+ if (out == INVALID_HANDLE_VALUE) {
+ error_setg(errp, "open %s failed", file->out);
+ return NULL;
+ }
+ return qemu_chr_open_win_file(out);
+}
+
+static CharDriverState *qmp_chardev_open_serial(ChardevHostdev *serial,
+ Error **errp)
+{
+ return qemu_chr_open_win_path(serial->device);
+}
+
+static CharDriverState *qmp_chardev_open_parallel(ChardevHostdev *parallel,
+ Error **errp)
+{
+ error_setg(errp, "character device backend type 'parallel' not supported");
+ return NULL;
+}
+
+#else /* WIN32 */
+
+static int qmp_chardev_open_file_source(char *src, int flags,
+ Error **errp)
+{
+ int fd = -1;
+
+ TFR(fd = qemu_open(src, flags, 0666));
+ if (fd == -1) {
+ error_setg_file_open(errp, errno, src);
+ }
+ return fd;
+}
+
+static CharDriverState *qmp_chardev_open_file(ChardevFile *file, Error **errp)
+{
+ int flags, in = -1, out;
+
+ flags = O_WRONLY | O_TRUNC | O_CREAT | O_BINARY;
+ out = qmp_chardev_open_file_source(file->out, flags, errp);
+ if (out < 0) {
+ return NULL;
+ }
+
+ if (file->has_in) {
+ flags = O_RDONLY;
+ in = qmp_chardev_open_file_source(file->in, flags, errp);
+ if (in < 0) {
+ qemu_close(out);
+ return NULL;
+ }
+ }
+
+ return qemu_chr_open_fd(in, out);
+}
+
+static CharDriverState *qmp_chardev_open_serial(ChardevHostdev *serial,
+ Error **errp)
+{
+#ifdef HAVE_CHARDEV_TTY
+ int fd;
+
+ fd = qmp_chardev_open_file_source(serial->device, O_RDWR, errp);
+ if (fd < 0) {
+ return NULL;
+ }
+ qemu_set_nonblock(fd);
+ return qemu_chr_open_tty_fd(fd);
+#else
+ error_setg(errp, "character device backend type 'serial' not supported");
+ return NULL;
+#endif
+}
+
+static CharDriverState *qmp_chardev_open_parallel(ChardevHostdev *parallel,
+ Error **errp)
+{
+#ifdef HAVE_CHARDEV_PARPORT
+ int fd;
+
+ fd = qmp_chardev_open_file_source(parallel->device, O_RDWR, errp);
+ if (fd < 0) {
+ return NULL;
+ }
+ return qemu_chr_open_pp_fd(fd);
+#else
+ error_setg(errp, "character device backend type 'parallel' not supported");
+ return NULL;
+#endif
+}
+
+#endif /* WIN32 */
+
+static void socket_try_connect(CharDriverState *chr)
+{
+ Error *err = NULL;
+
+ if (!qemu_chr_open_socket_fd(chr, &err)) {
+ check_report_connect_error(chr, err);
+ }
+}
+
+static gboolean socket_reconnect_timeout(gpointer opaque)
+{
+ CharDriverState *chr = opaque;
+ TCPCharDriver *s = chr->opaque;
+
+ s->reconnect_timer = 0;
+
+ if (chr->be_open) {
+ return false;
+ }
+
+ socket_try_connect(chr);
+
+ return false;
+}
+
+static CharDriverState *qmp_chardev_open_socket(ChardevSocket *sock,
+ Error **errp)
+{
+ CharDriverState *chr;
+ TCPCharDriver *s;
+ SocketAddress *addr = sock->addr;
+ bool do_nodelay = sock->has_nodelay ? sock->nodelay : false;
+ bool is_listen = sock->has_server ? sock->server : true;
+ bool is_telnet = sock->has_telnet ? sock->telnet : false;
+ bool is_waitconnect = sock->has_wait ? sock->wait : false;
+ int64_t reconnect = sock->has_reconnect ? sock->reconnect : 0;
+
+ chr = qemu_chr_alloc();
+ s = g_malloc0(sizeof(TCPCharDriver));
+
+ s->fd = -1;
+ s->listen_fd = -1;
+ s->is_unix = addr->kind == SOCKET_ADDRESS_KIND_UNIX;
+ s->is_listen = is_listen;
+ s->is_telnet = is_telnet;
+ s->do_nodelay = do_nodelay;
+ qapi_copy_SocketAddress(&s->addr, sock->addr);
+
+ chr->opaque = s;
+ chr->chr_write = tcp_chr_write;
+ chr->chr_sync_read = tcp_chr_sync_read;
+ chr->chr_close = tcp_chr_close;
+ chr->get_msgfds = tcp_get_msgfds;
+ chr->set_msgfds = tcp_set_msgfds;
+ chr->chr_add_client = tcp_chr_add_client;
+ chr->chr_add_watch = tcp_chr_add_watch;
+ chr->chr_update_read_handler = tcp_chr_update_read_handler;
+ /* be isn't opened until we get a connection */
+ chr->explicit_be_open = true;
+
+ chr->filename = g_malloc(CHR_MAX_FILENAME_SIZE);
+ SocketAddress_to_str(chr->filename, CHR_MAX_FILENAME_SIZE, "disconnected:",
+ addr, is_listen, is_telnet);
+
+ if (is_listen) {
+ if (is_telnet) {
+ s->do_telnetopt = 1;
+ }
+ } else if (reconnect > 0) {
+ s->reconnect_time = reconnect;
+ }
+
+ if (s->reconnect_time) {
+ socket_try_connect(chr);
+ } else if (!qemu_chr_open_socket_fd(chr, errp)) {
+ g_free(s);
+ g_free(chr->filename);
+ g_free(chr);
+ return NULL;
+ }
+
+ if (is_listen && is_waitconnect) {
+ fprintf(stderr, "QEMU waiting for connection on: %s\n",
+ chr->filename);
+ tcp_chr_accept(s->listen_chan, G_IO_IN, chr);
+ qemu_set_nonblock(s->listen_fd);
+ }
+
+ return chr;
+}
+
+static CharDriverState *qmp_chardev_open_udp(ChardevUdp *udp,
+ Error **errp)
+{
+ int fd;
+
+ fd = socket_dgram(udp->remote, udp->local, errp);
+ if (fd < 0) {
+ return NULL;
+ }
+ return qemu_chr_open_udp_fd(fd);
+}
+
+ChardevReturn *qmp_chardev_add(const char *id, ChardevBackend *backend,
+ Error **errp)
+{
+ ChardevReturn *ret = g_new0(ChardevReturn, 1);
+ CharDriverState *base, *chr = NULL;
+
+ chr = qemu_chr_find(id);
+ if (chr) {
+ error_setg(errp, "Chardev '%s' already exists", id);
+ g_free(ret);
+ return NULL;
+ }
+
+ switch (backend->kind) {
+ case CHARDEV_BACKEND_KIND_FILE:
+ chr = qmp_chardev_open_file(backend->file, errp);
+ break;
+ case CHARDEV_BACKEND_KIND_SERIAL:
+ chr = qmp_chardev_open_serial(backend->serial, errp);
+ break;
+ case CHARDEV_BACKEND_KIND_PARALLEL:
+ chr = qmp_chardev_open_parallel(backend->parallel, errp);
+ break;
+ case CHARDEV_BACKEND_KIND_PIPE:
+ chr = qemu_chr_open_pipe(backend->pipe);
+ break;
+ case CHARDEV_BACKEND_KIND_SOCKET:
+ chr = qmp_chardev_open_socket(backend->socket, errp);
+ break;
+ case CHARDEV_BACKEND_KIND_UDP:
+ chr = qmp_chardev_open_udp(backend->udp, errp);
+ break;
+#ifdef HAVE_CHARDEV_TTY
+ case CHARDEV_BACKEND_KIND_PTY:
+ chr = qemu_chr_open_pty(id, ret);
+ break;
+#endif
+ case CHARDEV_BACKEND_KIND_NULL:
+ chr = qemu_chr_open_null();
+ break;
+ case CHARDEV_BACKEND_KIND_MUX:
+ base = qemu_chr_find(backend->mux->chardev);
+ if (base == NULL) {
+ error_setg(errp, "mux: base chardev %s not found",
+ backend->mux->chardev);
+ break;
+ }
+ chr = qemu_chr_open_mux(base);
+ break;
+ case CHARDEV_BACKEND_KIND_MSMOUSE:
+ chr = qemu_chr_open_msmouse();
+ break;
+#ifdef CONFIG_BRLAPI
+ case CHARDEV_BACKEND_KIND_BRAILLE:
+ chr = chr_baum_init();
+ break;
+#endif
+ case CHARDEV_BACKEND_KIND_TESTDEV:
+ chr = chr_testdev_init();
+ break;
+ case CHARDEV_BACKEND_KIND_STDIO:
+ chr = qemu_chr_open_stdio(backend->stdio);
+ break;
+#ifdef _WIN32
+ case CHARDEV_BACKEND_KIND_CONSOLE:
+ chr = qemu_chr_open_win_con();
+ break;
+#endif
+#ifdef CONFIG_SPICE
+ case CHARDEV_BACKEND_KIND_SPICEVMC:
+ chr = qemu_chr_open_spice_vmc(backend->spicevmc->type);
+ break;
+ case CHARDEV_BACKEND_KIND_SPICEPORT:
+ chr = qemu_chr_open_spice_port(backend->spiceport->fqdn);
+ break;
+#endif
+ case CHARDEV_BACKEND_KIND_VC:
+ chr = vc_init(backend->vc);
+ break;
+ case CHARDEV_BACKEND_KIND_RINGBUF:
+ case CHARDEV_BACKEND_KIND_MEMORY:
+ chr = qemu_chr_open_ringbuf(backend->ringbuf, errp);
+ break;
+ default:
+ error_setg(errp, "unknown chardev backend (%d)", backend->kind);
+ break;
+ }
+
+ /*
+ * Character backend open hasn't been fully converted to the Error
+ * API. Some opens fail without setting an error. Set a generic
+ * error then.
+ * TODO full conversion to Error API
+ */
+ if (chr == NULL && errp && !*errp) {
+ error_setg(errp, "Failed to create chardev");
+ }
+ if (chr) {
+ chr->label = g_strdup(id);
+ chr->avail_connections =
+ (backend->kind == CHARDEV_BACKEND_KIND_MUX) ? MAX_MUX : 1;
+ if (!chr->filename) {
+ chr->filename = g_strdup(ChardevBackendKind_lookup[backend->kind]);
+ }
+ if (!chr->explicit_be_open) {
+ qemu_chr_be_event(chr, CHR_EVENT_OPENED);
+ }
+ QTAILQ_INSERT_TAIL(&chardevs, chr, next);
+ return ret;
+ } else {
+ g_free(ret);
+ return NULL;
+ }
+}
+
+void qmp_chardev_remove(const char *id, Error **errp)
+{
+ CharDriverState *chr;
+
+ chr = qemu_chr_find(id);
+ if (chr == NULL) {
+ error_setg(errp, "Chardev '%s' not found", id);
+ return;
+ }
+ if (chr->chr_can_read || chr->chr_read ||
+ chr->chr_event || chr->handler_opaque) {
+ error_setg(errp, "Chardev '%s' is busy", id);
+ return;
+ }
+ qemu_chr_delete(chr);
+}
+
+static void register_types(void)
+{
+ register_char_driver("null", CHARDEV_BACKEND_KIND_NULL, NULL);
+ register_char_driver("socket", CHARDEV_BACKEND_KIND_SOCKET,
+ qemu_chr_parse_socket);
+ register_char_driver("udp", CHARDEV_BACKEND_KIND_UDP, qemu_chr_parse_udp);
+ register_char_driver("ringbuf", CHARDEV_BACKEND_KIND_RINGBUF,
+ qemu_chr_parse_ringbuf);
+ register_char_driver("file", CHARDEV_BACKEND_KIND_FILE,
+ qemu_chr_parse_file_out);
+ register_char_driver("stdio", CHARDEV_BACKEND_KIND_STDIO,
+ qemu_chr_parse_stdio);
+ register_char_driver("serial", CHARDEV_BACKEND_KIND_SERIAL,
+ qemu_chr_parse_serial);
+ register_char_driver("tty", CHARDEV_BACKEND_KIND_SERIAL,
+ qemu_chr_parse_serial);
+ register_char_driver("parallel", CHARDEV_BACKEND_KIND_PARALLEL,
+ qemu_chr_parse_parallel);
+ register_char_driver("parport", CHARDEV_BACKEND_KIND_PARALLEL,
+ qemu_chr_parse_parallel);
+ register_char_driver("pty", CHARDEV_BACKEND_KIND_PTY, NULL);
+ register_char_driver("console", CHARDEV_BACKEND_KIND_CONSOLE, NULL);
+ register_char_driver("pipe", CHARDEV_BACKEND_KIND_PIPE,
+ qemu_chr_parse_pipe);
+ register_char_driver("mux", CHARDEV_BACKEND_KIND_MUX, qemu_chr_parse_mux);
+ /* Bug-compatibility: */
+ register_char_driver("memory", CHARDEV_BACKEND_KIND_MEMORY,
+ qemu_chr_parse_ringbuf);
+ /* this must be done after machine init, since we register FEs with muxes
+ * as part of realize functions like serial_isa_realizefn when -nographic
+ * is specified
+ */
+ qemu_add_machine_init_done_notifier(&muxes_realize_notify);
+}
+
+type_init(register_types);
Code Review / kvmfornfv.git / blobdiff