In commit ac1b84dd1
(rhbz#1027181), a check was added to only update the
"read handler" when the front-end is opened, because the read callbacks
were not restored when a device is plugged. However, this seems not
correct, the handler is correctly set back on hotplug (in
virtconsole_realize) and the bug can no longer be reproduced.
Calling chr_update_read_handler() allows to fix the mux driver to stop
calling the child handlers (which may be going to be destroyed).
Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Message-Id: <20161003094704.18087-2-marcandre.lureau@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
4739 lines
127 KiB
C
4739 lines
127 KiB
C
/*
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* QEMU System Emulator
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*
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* Copyright (c) 2003-2008 Fabrice Bellard
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*/
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#include "qemu/osdep.h"
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#include "qemu-common.h"
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#include "qemu/cutils.h"
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#include "monitor/monitor.h"
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#include "sysemu/sysemu.h"
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#include "sysemu/block-backend.h"
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#include "qemu/error-report.h"
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#include "qemu/timer.h"
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#include "sysemu/char.h"
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#include "hw/usb.h"
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#include "qmp-commands.h"
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#include "qapi/clone-visitor.h"
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#include "qapi-visit.h"
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#include "qemu/base64.h"
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#include "io/channel-socket.h"
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#include "io/channel-file.h"
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#include "io/channel-tls.h"
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#include "sysemu/replay.h"
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#include "qemu/help_option.h"
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#include <zlib.h>
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#ifndef _WIN32
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#include <sys/times.h>
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#include <sys/wait.h>
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#include <termios.h>
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#include <sys/ioctl.h>
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|
#include <sys/resource.h>
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#include <sys/socket.h>
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#include <netinet/in.h>
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#include <net/if.h>
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#include <arpa/inet.h>
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#include <netdb.h>
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#include <sys/select.h>
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#ifdef CONFIG_BSD
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#if defined(__FreeBSD__) || defined(__FreeBSD_kernel__)
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#include <dev/ppbus/ppi.h>
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#include <dev/ppbus/ppbconf.h>
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|
#elif defined(__DragonFly__)
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#include <dev/misc/ppi/ppi.h>
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#include <bus/ppbus/ppbconf.h>
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#endif
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#else
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#ifdef __linux__
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#include <linux/ppdev.h>
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#include <linux/parport.h>
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#endif
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#ifdef __sun__
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#include <sys/ethernet.h>
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#include <sys/sockio.h>
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#include <netinet/arp.h>
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#include <netinet/in.h>
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#include <netinet/in_systm.h>
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#include <netinet/ip.h>
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#include <netinet/ip_icmp.h> // must come after ip.h
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#include <netinet/udp.h>
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#include <netinet/tcp.h>
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#endif
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#endif
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#endif
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|
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#include "qemu/sockets.h"
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#include "ui/qemu-spice.h"
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#define READ_BUF_LEN 4096
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#define READ_RETRIES 10
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#define TCP_MAX_FDS 16
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/***********************************************************/
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/* Socket address helpers */
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static char *SocketAddress_to_str(const char *prefix, SocketAddress *addr,
|
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bool is_listen, bool is_telnet)
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{
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switch (addr->type) {
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case SOCKET_ADDRESS_KIND_INET:
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return g_strdup_printf("%s%s:%s:%s%s", prefix,
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is_telnet ? "telnet" : "tcp",
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addr->u.inet.data->host,
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addr->u.inet.data->port,
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is_listen ? ",server" : "");
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break;
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case SOCKET_ADDRESS_KIND_UNIX:
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return g_strdup_printf("%sunix:%s%s", prefix,
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addr->u.q_unix.data->path,
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is_listen ? ",server" : "");
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break;
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case SOCKET_ADDRESS_KIND_FD:
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return g_strdup_printf("%sfd:%s%s", prefix, addr->u.fd.data->str,
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is_listen ? ",server" : "");
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break;
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default:
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abort();
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}
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}
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static char *sockaddr_to_str(struct sockaddr_storage *ss, socklen_t ss_len,
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struct sockaddr_storage *ps, socklen_t ps_len,
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bool is_listen, bool is_telnet)
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|
{
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char shost[NI_MAXHOST], sserv[NI_MAXSERV];
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char phost[NI_MAXHOST], pserv[NI_MAXSERV];
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const char *left = "", *right = "";
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|
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switch (ss->ss_family) {
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#ifndef _WIN32
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case AF_UNIX:
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return g_strdup_printf("unix:%s%s",
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((struct sockaddr_un *)(ss))->sun_path,
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is_listen ? ",server" : "");
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#endif
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case AF_INET6:
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left = "[";
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right = "]";
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/* fall through */
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case AF_INET:
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getnameinfo((struct sockaddr *) ss, ss_len, shost, sizeof(shost),
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sserv, sizeof(sserv), NI_NUMERICHOST | NI_NUMERICSERV);
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getnameinfo((struct sockaddr *) ps, ps_len, phost, sizeof(phost),
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pserv, sizeof(pserv), NI_NUMERICHOST | NI_NUMERICSERV);
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return g_strdup_printf("%s:%s%s%s:%s%s <-> %s%s%s:%s",
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is_telnet ? "telnet" : "tcp",
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left, shost, right, sserv,
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is_listen ? ",server" : "",
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left, phost, right, pserv);
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default:
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return g_strdup_printf("unknown");
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}
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}
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/***********************************************************/
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/* character device */
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static QTAILQ_HEAD(CharDriverStateHead, CharDriverState) chardevs =
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QTAILQ_HEAD_INITIALIZER(chardevs);
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static void qemu_chr_free_common(CharDriverState *chr);
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CharDriverState *qemu_chr_alloc(ChardevCommon *backend, Error **errp)
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{
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CharDriverState *chr = g_malloc0(sizeof(CharDriverState));
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qemu_mutex_init(&chr->chr_write_lock);
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chr->mux_idx = -1;
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if (backend->has_logfile) {
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int flags = O_WRONLY | O_CREAT;
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if (backend->has_logappend &&
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backend->logappend) {
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flags |= O_APPEND;
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} else {
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flags |= O_TRUNC;
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}
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chr->logfd = qemu_open(backend->logfile, flags, 0666);
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if (chr->logfd < 0) {
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error_setg_errno(errp, errno,
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"Unable to open logfile %s",
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backend->logfile);
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g_free(chr);
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return NULL;
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}
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} else {
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chr->logfd = -1;
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}
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return chr;
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}
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void qemu_chr_be_event(CharDriverState *s, int event)
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{
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/* Keep track if the char device is open */
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switch (event) {
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case CHR_EVENT_OPENED:
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s->be_open = 1;
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break;
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case CHR_EVENT_CLOSED:
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s->be_open = 0;
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break;
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}
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if (!s->chr_event)
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return;
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s->chr_event(s->handler_opaque, event);
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}
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void qemu_chr_be_generic_open(CharDriverState *s)
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{
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qemu_chr_be_event(s, CHR_EVENT_OPENED);
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}
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/* Not reporting errors from writing to logfile, as logs are
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* defined to be "best effort" only */
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static void qemu_chr_fe_write_log(CharDriverState *s,
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const uint8_t *buf, size_t len)
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{
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size_t done = 0;
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ssize_t ret;
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if (s->logfd < 0) {
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return;
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}
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while (done < len) {
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retry:
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ret = write(s->logfd, buf + done, len - done);
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if (ret == -1 && errno == EAGAIN) {
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g_usleep(100);
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goto retry;
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}
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if (ret <= 0) {
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return;
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}
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done += ret;
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}
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}
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static int qemu_chr_fe_write_buffer(CharDriverState *s, const uint8_t *buf, int len, int *offset)
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{
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int res = 0;
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*offset = 0;
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qemu_mutex_lock(&s->chr_write_lock);
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while (*offset < len) {
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retry:
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res = s->chr_write(s, buf + *offset, len - *offset);
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if (res < 0 && errno == EAGAIN) {
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g_usleep(100);
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goto retry;
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}
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if (res <= 0) {
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break;
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}
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*offset += res;
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}
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if (*offset > 0) {
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qemu_chr_fe_write_log(s, buf, *offset);
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}
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qemu_mutex_unlock(&s->chr_write_lock);
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return res;
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}
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int qemu_chr_fe_write(CharDriverState *s, const uint8_t *buf, int len)
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{
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int ret;
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if (s->replay && replay_mode == REPLAY_MODE_PLAY) {
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int offset;
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replay_char_write_event_load(&ret, &offset);
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assert(offset <= len);
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qemu_chr_fe_write_buffer(s, buf, offset, &offset);
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return ret;
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}
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qemu_mutex_lock(&s->chr_write_lock);
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ret = s->chr_write(s, buf, len);
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if (ret > 0) {
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qemu_chr_fe_write_log(s, buf, ret);
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}
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qemu_mutex_unlock(&s->chr_write_lock);
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if (s->replay && replay_mode == REPLAY_MODE_RECORD) {
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replay_char_write_event_save(ret, ret < 0 ? 0 : ret);
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}
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return ret;
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}
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int qemu_chr_fe_write_all(CharDriverState *s, const uint8_t *buf, int len)
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{
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int offset;
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int res;
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if (s->replay && replay_mode == REPLAY_MODE_PLAY) {
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replay_char_write_event_load(&res, &offset);
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assert(offset <= len);
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qemu_chr_fe_write_buffer(s, buf, offset, &offset);
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return res;
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}
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res = qemu_chr_fe_write_buffer(s, buf, len, &offset);
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if (s->replay && replay_mode == REPLAY_MODE_RECORD) {
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replay_char_write_event_save(res, offset);
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}
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if (res < 0) {
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return res;
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}
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return offset;
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}
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|
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int qemu_chr_fe_read_all(CharDriverState *s, uint8_t *buf, int len)
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{
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int offset = 0, counter = 10;
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int res;
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|
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if (!s->chr_sync_read) {
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return 0;
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}
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if (s->replay && replay_mode == REPLAY_MODE_PLAY) {
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return replay_char_read_all_load(buf);
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}
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while (offset < len) {
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retry:
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res = s->chr_sync_read(s, buf + offset, len - offset);
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if (res == -1 && errno == EAGAIN) {
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g_usleep(100);
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goto retry;
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}
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|
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if (res == 0) {
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break;
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}
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|
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if (res < 0) {
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if (s->replay && replay_mode == REPLAY_MODE_RECORD) {
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replay_char_read_all_save_error(res);
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}
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return res;
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}
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offset += res;
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|
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if (!counter--) {
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break;
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}
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}
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if (s->replay && replay_mode == REPLAY_MODE_RECORD) {
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replay_char_read_all_save_buf(buf, offset);
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}
|
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return offset;
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}
|
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|
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int qemu_chr_fe_ioctl(CharDriverState *s, int cmd, void *arg)
|
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{
|
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int res;
|
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if (!s->chr_ioctl || s->replay) {
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res = -ENOTSUP;
|
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} else {
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res = s->chr_ioctl(s, cmd, arg);
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}
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return res;
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}
|
|
|
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int qemu_chr_be_can_write(CharDriverState *s)
|
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{
|
|
if (!s->chr_can_read)
|
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return 0;
|
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return s->chr_can_read(s->handler_opaque);
|
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}
|
|
|
|
void qemu_chr_be_write_impl(CharDriverState *s, uint8_t *buf, int len)
|
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{
|
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if (s->chr_read) {
|
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s->chr_read(s->handler_opaque, buf, len);
|
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}
|
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}
|
|
|
|
void qemu_chr_be_write(CharDriverState *s, uint8_t *buf, int len)
|
|
{
|
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if (s->replay) {
|
|
if (replay_mode == REPLAY_MODE_PLAY) {
|
|
return;
|
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}
|
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replay_chr_be_write(s, buf, len);
|
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} else {
|
|
qemu_chr_be_write_impl(s, buf, len);
|
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}
|
|
}
|
|
|
|
int qemu_chr_fe_get_msgfd(CharDriverState *s)
|
|
{
|
|
int fd;
|
|
int res = (qemu_chr_fe_get_msgfds(s, &fd, 1) == 1) ? fd : -1;
|
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if (s->replay) {
|
|
fprintf(stderr,
|
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"Replay: get msgfd is not supported for serial devices yet\n");
|
|
exit(1);
|
|
}
|
|
return res;
|
|
}
|
|
|
|
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);
|
|
/* XXX this blocks entire thread. Rewrite to use
|
|
* qemu_chr_fe_write and background I/O callbacks */
|
|
qemu_chr_fe_write_all(s, (uint8_t *)buf, strlen(buf));
|
|
va_end(ap);
|
|
}
|
|
|
|
static void remove_fd_in_watch(CharDriverState *chr);
|
|
|
|
void qemu_chr_add_handlers_full(CharDriverState *s,
|
|
IOCanReadHandler *fd_can_read,
|
|
IOReadHandler *fd_read,
|
|
IOEventHandler *fd_event,
|
|
void *opaque,
|
|
GMainContext *context)
|
|
{
|
|
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 (s->chr_update_read_handler) {
|
|
s->chr_update_read_handler(s, context);
|
|
}
|
|
|
|
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);
|
|
}
|
|
}
|
|
|
|
void qemu_chr_add_handlers(CharDriverState *s,
|
|
IOCanReadHandler *fd_can_read,
|
|
IOReadHandler *fd_read,
|
|
IOEventHandler *fd_event,
|
|
void *opaque)
|
|
{
|
|
qemu_chr_add_handlers_full(s, fd_can_read, fd_read,
|
|
fd_event, opaque, NULL);
|
|
}
|
|
|
|
static int null_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
|
|
{
|
|
return len;
|
|
}
|
|
|
|
static CharDriverState *qemu_chr_open_null(const char *id,
|
|
ChardevBackend *backend,
|
|
ChardevReturn *ret,
|
|
Error **errp)
|
|
{
|
|
CharDriverState *chr;
|
|
ChardevCommon *common = backend->u.null.data;
|
|
|
|
chr = qemu_chr_alloc(common, errp);
|
|
if (!chr) {
|
|
return NULL;
|
|
}
|
|
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));
|
|
/* XXX this blocks entire thread. Rewrite to use
|
|
* qemu_chr_fe_write and background I/O callbacks */
|
|
qemu_chr_fe_write_all(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);
|
|
}
|
|
/* XXX this blocks entire thread. Rewrite to use
|
|
* qemu_chr_fe_write and background I/O callbacks */
|
|
qemu_chr_fe_write_all(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_all(chr, (uint8_t *)ebuf, strlen(ebuf));
|
|
else
|
|
qemu_chr_fe_write_all(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_all(chr, (uint8_t *)term, strlen(term));
|
|
exit(0);
|
|
break;
|
|
}
|
|
case 's':
|
|
blk_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,
|
|
GMainContext *context)
|
|
{
|
|
MuxDriver *d = chr->opaque;
|
|
int idx;
|
|
|
|
if (d->mux_cnt >= MAX_MUX) {
|
|
fprintf(stderr, "Cannot add I/O handlers, MUX array is full\n");
|
|
return;
|
|
}
|
|
|
|
if (chr->mux_idx == -1) {
|
|
chr->mux_idx = d->mux_cnt++;
|
|
}
|
|
|
|
idx = chr->mux_idx;
|
|
d->ext_opaque[idx] = chr->handler_opaque;
|
|
d->chr_can_read[idx] = chr->chr_can_read;
|
|
d->chr_read[idx] = chr->chr_read;
|
|
d->chr_event[idx] = chr->chr_event;
|
|
|
|
/* Fix up the real driver with mux routines */
|
|
if (d->mux_cnt == 1) {
|
|
qemu_chr_add_handlers_full(d->drv, mux_chr_can_read,
|
|
mux_chr_read,
|
|
mux_chr_event,
|
|
chr, context);
|
|
}
|
|
if (d->focus != -1) {
|
|
mux_chr_send_event(d, d->focus, CHR_EVENT_MUX_OUT);
|
|
}
|
|
d->focus = idx;
|
|
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 void mux_chr_close(struct CharDriverState *chr)
|
|
{
|
|
MuxDriver *d = chr->opaque;
|
|
|
|
g_free(d);
|
|
}
|
|
|
|
static CharDriverState *qemu_chr_open_mux(const char *id,
|
|
ChardevBackend *backend,
|
|
ChardevReturn *ret, Error **errp)
|
|
{
|
|
ChardevMux *mux = backend->u.mux.data;
|
|
CharDriverState *chr, *drv;
|
|
MuxDriver *d;
|
|
ChardevCommon *common = qapi_ChardevMux_base(mux);
|
|
|
|
drv = qemu_chr_find(mux->chardev);
|
|
if (drv == NULL) {
|
|
error_setg(errp, "mux: base chardev %s not found", mux->chardev);
|
|
return NULL;
|
|
}
|
|
|
|
chr = qemu_chr_alloc(common, errp);
|
|
if (!chr) {
|
|
return NULL;
|
|
}
|
|
d = g_new0(MuxDriver, 1);
|
|
|
|
chr->opaque = d;
|
|
d->drv = drv;
|
|
d->focus = -1;
|
|
chr->chr_close = mux_chr_close;
|
|
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;
|
|
}
|
|
|
|
|
|
typedef struct IOWatchPoll
|
|
{
|
|
GSource parent;
|
|
|
|
QIOChannel *ioc;
|
|
GSource *src;
|
|
|
|
IOCanReadHandler *fd_can_read;
|
|
GSourceFunc fd_read;
|
|
void *opaque;
|
|
GMainContext *context;
|
|
} 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 = qio_channel_create_watch(
|
|
iwp->ioc, 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, iwp->context);
|
|
} 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(QIOChannel *ioc,
|
|
IOCanReadHandler *fd_can_read,
|
|
QIOChannelFunc fd_read,
|
|
gpointer user_data,
|
|
GMainContext *context)
|
|
{
|
|
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->ioc = ioc;
|
|
iwp->fd_read = (GSourceFunc) fd_read;
|
|
iwp->src = NULL;
|
|
iwp->context = context;
|
|
|
|
tag = g_source_attach(&iwp->parent, context);
|
|
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;
|
|
}
|
|
}
|
|
|
|
|
|
static int io_channel_send_full(QIOChannel *ioc,
|
|
const void *buf, size_t len,
|
|
int *fds, size_t nfds)
|
|
{
|
|
size_t offset = 0;
|
|
|
|
while (offset < len) {
|
|
ssize_t ret = 0;
|
|
struct iovec iov = { .iov_base = (char *)buf + offset,
|
|
.iov_len = len - offset };
|
|
|
|
ret = qio_channel_writev_full(
|
|
ioc, &iov, 1,
|
|
fds, nfds, NULL);
|
|
if (ret == QIO_CHANNEL_ERR_BLOCK) {
|
|
if (offset) {
|
|
return offset;
|
|
}
|
|
|
|
errno = EAGAIN;
|
|
return -1;
|
|
} else if (ret < 0) {
|
|
errno = EINVAL;
|
|
return -1;
|
|
}
|
|
|
|
offset += ret;
|
|
}
|
|
|
|
return offset;
|
|
}
|
|
|
|
|
|
#ifndef _WIN32
|
|
static int io_channel_send(QIOChannel *ioc, const void *buf, size_t len)
|
|
{
|
|
return io_channel_send_full(ioc, buf, len, NULL, 0);
|
|
}
|
|
|
|
|
|
typedef struct FDCharDriver {
|
|
CharDriverState *chr;
|
|
QIOChannel *ioc_in, *ioc_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->ioc_out, buf, len);
|
|
}
|
|
|
|
static gboolean fd_chr_read(QIOChannel *chan, GIOCondition cond, void *opaque)
|
|
{
|
|
CharDriverState *chr = opaque;
|
|
FDCharDriver *s = chr->opaque;
|
|
int len;
|
|
uint8_t buf[READ_BUF_LEN];
|
|
ssize_t ret;
|
|
|
|
len = sizeof(buf);
|
|
if (len > s->max_size) {
|
|
len = s->max_size;
|
|
}
|
|
if (len == 0) {
|
|
return TRUE;
|
|
}
|
|
|
|
ret = qio_channel_read(
|
|
chan, (gchar *)buf, len, NULL);
|
|
if (ret == 0) {
|
|
remove_fd_in_watch(chr);
|
|
qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
|
|
return FALSE;
|
|
}
|
|
if (ret > 0) {
|
|
qemu_chr_be_write(chr, buf, ret);
|
|
}
|
|
|
|
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 qio_channel_create_watch(s->ioc_out, cond);
|
|
}
|
|
|
|
static void fd_chr_update_read_handler(CharDriverState *chr,
|
|
GMainContext *context)
|
|
{
|
|
FDCharDriver *s = chr->opaque;
|
|
|
|
remove_fd_in_watch(chr);
|
|
if (s->ioc_in) {
|
|
chr->fd_in_tag = io_add_watch_poll(s->ioc_in,
|
|
fd_chr_read_poll,
|
|
fd_chr_read, chr,
|
|
context);
|
|
}
|
|
}
|
|
|
|
static void fd_chr_close(struct CharDriverState *chr)
|
|
{
|
|
FDCharDriver *s = chr->opaque;
|
|
|
|
remove_fd_in_watch(chr);
|
|
if (s->ioc_in) {
|
|
object_unref(OBJECT(s->ioc_in));
|
|
}
|
|
if (s->ioc_out) {
|
|
object_unref(OBJECT(s->ioc_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,
|
|
ChardevCommon *backend, Error **errp)
|
|
{
|
|
CharDriverState *chr;
|
|
FDCharDriver *s;
|
|
|
|
chr = qemu_chr_alloc(backend, errp);
|
|
if (!chr) {
|
|
return NULL;
|
|
}
|
|
s = g_new0(FDCharDriver, 1);
|
|
s->ioc_in = QIO_CHANNEL(qio_channel_file_new_fd(fd_in));
|
|
s->ioc_out = QIO_CHANNEL(qio_channel_file_new_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(const char *id,
|
|
ChardevBackend *backend,
|
|
ChardevReturn *ret,
|
|
Error **errp)
|
|
{
|
|
ChardevHostdev *opts = backend->u.pipe.data;
|
|
int fd_in, fd_out;
|
|
char *filename_in;
|
|
char *filename_out;
|
|
const char *filename = opts->device;
|
|
ChardevCommon *common = qapi_ChardevHostdev_base(opts);
|
|
|
|
|
|
filename_in = g_strdup_printf("%s.in", filename);
|
|
filename_out = g_strdup_printf("%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));
|
|
g_free(filename_in);
|
|
g_free(filename_out);
|
|
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) {
|
|
error_setg_file_open(errp, errno, filename);
|
|
return NULL;
|
|
}
|
|
}
|
|
return qemu_chr_open_fd(fd_in, fd_out, common, errp);
|
|
}
|
|
|
|
/* 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(const char *id,
|
|
ChardevBackend *backend,
|
|
ChardevReturn *ret,
|
|
Error **errp)
|
|
{
|
|
ChardevStdio *opts = backend->u.stdio.data;
|
|
CharDriverState *chr;
|
|
struct sigaction act;
|
|
ChardevCommon *common = qapi_ChardevStdio_base(opts);
|
|
|
|
if (is_daemonized()) {
|
|
error_setg(errp, "cannot use stdio with -daemonize");
|
|
return NULL;
|
|
}
|
|
|
|
if (stdio_in_use) {
|
|
error_setg(errp, "cannot use stdio by multiple character devices");
|
|
return NULL;
|
|
}
|
|
|
|
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, common, errp);
|
|
if (!chr) {
|
|
return NULL;
|
|
}
|
|
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_SERIAL 1
|
|
#define HAVE_CHARDEV_PTY 1
|
|
|
|
typedef struct {
|
|
QIOChannel *ioc;
|
|
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;
|
|
int rc;
|
|
QIOChannelFile *fioc = QIO_CHANNEL_FILE(s->ioc);
|
|
|
|
pfd.fd = fioc->fd;
|
|
pfd.events = G_IO_OUT;
|
|
pfd.revents = 0;
|
|
do {
|
|
rc = g_poll(&pfd, 1, 0);
|
|
} while (rc == -1 && errno == EINTR);
|
|
assert(rc >= 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,
|
|
GMainContext *context)
|
|
{
|
|
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->ioc, buf, len);
|
|
}
|
|
|
|
static GSource *pty_chr_add_watch(CharDriverState *chr, GIOCondition cond)
|
|
{
|
|
PtyCharDriver *s = chr->opaque;
|
|
if (!s->connected) {
|
|
return NULL;
|
|
}
|
|
return qio_channel_create_watch(s->ioc, 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(QIOChannel *chan, GIOCondition cond, void *opaque)
|
|
{
|
|
CharDriverState *chr = opaque;
|
|
PtyCharDriver *s = chr->opaque;
|
|
gsize len;
|
|
uint8_t buf[READ_BUF_LEN];
|
|
ssize_t ret;
|
|
|
|
len = sizeof(buf);
|
|
if (len > s->read_bytes)
|
|
len = s->read_bytes;
|
|
if (len == 0) {
|
|
return TRUE;
|
|
}
|
|
ret = qio_channel_read(s->ioc, (char *)buf, len, NULL);
|
|
if (ret <= 0) {
|
|
pty_chr_state(chr, 0);
|
|
return FALSE;
|
|
} else {
|
|
pty_chr_state(chr, 1);
|
|
qemu_chr_be_write(chr, buf, ret);
|
|
}
|
|
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->ioc,
|
|
pty_chr_read_poll,
|
|
pty_chr_read,
|
|
chr, NULL);
|
|
}
|
|
}
|
|
}
|
|
|
|
static void pty_chr_close(struct CharDriverState *chr)
|
|
{
|
|
PtyCharDriver *s = chr->opaque;
|
|
|
|
qemu_mutex_lock(&chr->chr_write_lock);
|
|
pty_chr_state(chr, 0);
|
|
object_unref(OBJECT(s->ioc));
|
|
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,
|
|
ChardevBackend *backend,
|
|
ChardevReturn *ret,
|
|
Error **errp)
|
|
{
|
|
CharDriverState *chr;
|
|
PtyCharDriver *s;
|
|
int master_fd, slave_fd;
|
|
char pty_name[PATH_MAX];
|
|
ChardevCommon *common = backend->u.pty.data;
|
|
|
|
master_fd = qemu_openpty_raw(&slave_fd, pty_name);
|
|
if (master_fd < 0) {
|
|
error_setg_errno(errp, errno, "Failed to create PTY");
|
|
return NULL;
|
|
}
|
|
|
|
close(slave_fd);
|
|
qemu_set_nonblock(master_fd);
|
|
|
|
chr = qemu_chr_alloc(common, errp);
|
|
if (!chr) {
|
|
close(master_fd);
|
|
return NULL;
|
|
}
|
|
|
|
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_new0(PtyCharDriver, 1);
|
|
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->ioc = QIO_CHANNEL(qio_channel_file_new_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;
|
|
QIOChannelFile *fioc = QIO_CHANNEL_FILE(s->ioc_in);
|
|
|
|
switch(cmd) {
|
|
case CHR_IOCTL_SERIAL_SET_PARAMS:
|
|
{
|
|
QEMUSerialSetParams *ssp = arg;
|
|
tty_serial_init(fioc->fd,
|
|
ssp->speed, ssp->parity,
|
|
ssp->data_bits, ssp->stop_bits);
|
|
}
|
|
break;
|
|
case CHR_IOCTL_SERIAL_SET_BREAK:
|
|
{
|
|
int enable = *(int *)arg;
|
|
if (enable) {
|
|
tcsendbreak(fioc->fd, 1);
|
|
}
|
|
}
|
|
break;
|
|
case CHR_IOCTL_SERIAL_GET_TIOCM:
|
|
{
|
|
int sarg = 0;
|
|
int *targ = (int *)arg;
|
|
ioctl(fioc->fd, 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(fioc->fd, 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(fioc->fd, TIOCMSET, &targ);
|
|
}
|
|
break;
|
|
default:
|
|
return -ENOTSUP;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static void qemu_chr_close_tty(CharDriverState *chr)
|
|
{
|
|
fd_chr_close(chr);
|
|
}
|
|
|
|
static CharDriverState *qemu_chr_open_tty_fd(int fd,
|
|
ChardevCommon *backend,
|
|
Error **errp)
|
|
{
|
|
CharDriverState *chr;
|
|
|
|
tty_serial_init(fd, 115200, 'N', 8, 1);
|
|
chr = qemu_chr_open_fd(fd, fd, backend, errp);
|
|
if (!chr) {
|
|
return NULL;
|
|
}
|
|
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,
|
|
ChardevCommon *backend,
|
|
Error **errp)
|
|
{
|
|
CharDriverState *chr;
|
|
ParallelCharDriver *drv;
|
|
|
|
if (ioctl(fd, PPCLAIM) < 0) {
|
|
error_setg_errno(errp, errno, "not a parallel port");
|
|
close(fd);
|
|
return NULL;
|
|
}
|
|
|
|
chr = qemu_chr_alloc(backend, errp);
|
|
if (!chr) {
|
|
return NULL;
|
|
}
|
|
|
|
drv = g_new0(ParallelCharDriver, 1);
|
|
chr->opaque = drv;
|
|
chr->chr_write = null_chr_write;
|
|
chr->chr_ioctl = pp_ioctl;
|
|
chr->chr_close = pp_close;
|
|
|
|
drv->fd = fd;
|
|
drv->mode = IEEE1284_MODE_COMPAT;
|
|
|
|
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,
|
|
ChardevCommon *backend,
|
|
Error **errp)
|
|
{
|
|
CharDriverState *chr;
|
|
|
|
chr = qemu_chr_alloc(backend, errp);
|
|
if (!chr) {
|
|
return NULL;
|
|
}
|
|
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 */
|
|
|
|
#define HAVE_CHARDEV_SERIAL 1
|
|
|
|
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, Error **errp)
|
|
{
|
|
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) {
|
|
error_setg(errp, "Failed CreateEvent");
|
|
goto fail;
|
|
}
|
|
s->hrecv = CreateEvent(NULL, TRUE, FALSE, NULL);
|
|
if (!s->hrecv) {
|
|
error_setg(errp, "Failed CreateEvent");
|
|
goto fail;
|
|
}
|
|
|
|
s->hcom = CreateFile(filename, GENERIC_READ|GENERIC_WRITE, 0, NULL,
|
|
OPEN_EXISTING, FILE_FLAG_OVERLAPPED, 0);
|
|
if (s->hcom == INVALID_HANDLE_VALUE) {
|
|
error_setg(errp, "Failed CreateFile (%lu)", GetLastError());
|
|
s->hcom = NULL;
|
|
goto fail;
|
|
}
|
|
|
|
if (!SetupComm(s->hcom, NRECVBUF, NSENDBUF)) {
|
|
error_setg(errp, "Failed SetupComm");
|
|
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)) {
|
|
error_setg(errp, "Failed SetCommState");
|
|
goto fail;
|
|
}
|
|
|
|
if (!SetCommMask(s->hcom, EV_ERR)) {
|
|
error_setg(errp, "Failed SetCommMask");
|
|
goto fail;
|
|
}
|
|
|
|
cto.ReadIntervalTimeout = MAXDWORD;
|
|
if (!SetCommTimeouts(s->hcom, &cto)) {
|
|
error_setg(errp, "Failed SetCommTimeouts");
|
|
goto fail;
|
|
}
|
|
|
|
if (!ClearCommError(s->hcom, &err, &comstat)) {
|
|
error_setg(errp, "Failed ClearCommError");
|
|
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,
|
|
ChardevCommon *backend,
|
|
Error **errp)
|
|
{
|
|
CharDriverState *chr;
|
|
WinCharState *s;
|
|
|
|
chr = qemu_chr_alloc(backend, errp);
|
|
if (!chr) {
|
|
return NULL;
|
|
}
|
|
s = g_new0(WinCharState, 1);
|
|
chr->opaque = s;
|
|
chr->chr_write = win_chr_write;
|
|
chr->chr_close = win_chr_close;
|
|
|
|
if (win_chr_init(chr, filename, errp) < 0) {
|
|
g_free(s);
|
|
qemu_chr_free_common(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,
|
|
Error **errp)
|
|
{
|
|
WinCharState *s = chr->opaque;
|
|
OVERLAPPED ov;
|
|
int ret;
|
|
DWORD size;
|
|
char *openname;
|
|
|
|
s->fpipe = TRUE;
|
|
|
|
s->hsend = CreateEvent(NULL, TRUE, FALSE, NULL);
|
|
if (!s->hsend) {
|
|
error_setg(errp, "Failed CreateEvent");
|
|
goto fail;
|
|
}
|
|
s->hrecv = CreateEvent(NULL, TRUE, FALSE, NULL);
|
|
if (!s->hrecv) {
|
|
error_setg(errp, "Failed CreateEvent");
|
|
goto fail;
|
|
}
|
|
|
|
openname = g_strdup_printf("\\\\.\\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);
|
|
g_free(openname);
|
|
if (s->hcom == INVALID_HANDLE_VALUE) {
|
|
error_setg(errp, "Failed CreateNamedPipe (%lu)", GetLastError());
|
|
s->hcom = NULL;
|
|
goto fail;
|
|
}
|
|
|
|
ZeroMemory(&ov, sizeof(ov));
|
|
ov.hEvent = CreateEvent(NULL, TRUE, FALSE, NULL);
|
|
ret = ConnectNamedPipe(s->hcom, &ov);
|
|
if (ret) {
|
|
error_setg(errp, "Failed ConnectNamedPipe");
|
|
goto fail;
|
|
}
|
|
|
|
ret = GetOverlappedResult(s->hcom, &ov, &size, TRUE);
|
|
if (!ret) {
|
|
error_setg(errp, "Failed GetOverlappedResult");
|
|
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(const char *id,
|
|
ChardevBackend *backend,
|
|
ChardevReturn *ret,
|
|
Error **errp)
|
|
{
|
|
ChardevHostdev *opts = backend->u.pipe.data;
|
|
const char *filename = opts->device;
|
|
CharDriverState *chr;
|
|
WinCharState *s;
|
|
ChardevCommon *common = qapi_ChardevHostdev_base(opts);
|
|
|
|
chr = qemu_chr_alloc(common, errp);
|
|
if (!chr) {
|
|
return NULL;
|
|
}
|
|
s = g_new0(WinCharState, 1);
|
|
chr->opaque = s;
|
|
chr->chr_write = win_chr_write;
|
|
chr->chr_close = win_chr_close;
|
|
|
|
if (win_chr_pipe_init(chr, filename, errp) < 0) {
|
|
g_free(s);
|
|
qemu_chr_free_common(chr);
|
|
return NULL;
|
|
}
|
|
return chr;
|
|
}
|
|
|
|
static CharDriverState *qemu_chr_open_win_file(HANDLE fd_out,
|
|
ChardevCommon *backend,
|
|
Error **errp)
|
|
{
|
|
CharDriverState *chr;
|
|
WinCharState *s;
|
|
|
|
chr = qemu_chr_alloc(backend, errp);
|
|
if (!chr) {
|
|
return NULL;
|
|
}
|
|
s = g_new0(WinCharState, 1);
|
|
s->hcom = fd_out;
|
|
chr->opaque = s;
|
|
chr->chr_write = win_chr_write;
|
|
return chr;
|
|
}
|
|
|
|
static CharDriverState *qemu_chr_open_win_con(const char *id,
|
|
ChardevBackend *backend,
|
|
ChardevReturn *ret,
|
|
Error **errp)
|
|
{
|
|
ChardevCommon *common = backend->u.console.data;
|
|
return qemu_chr_open_win_file(GetStdHandle(STD_OUTPUT_HANDLE),
|
|
common, errp);
|
|
}
|
|
|
|
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(const char *id,
|
|
ChardevBackend *backend,
|
|
ChardevReturn *ret,
|
|
Error **errp)
|
|
{
|
|
CharDriverState *chr;
|
|
WinStdioCharState *stdio;
|
|
DWORD dwMode;
|
|
int is_console = 0;
|
|
ChardevCommon *common = qapi_ChardevStdio_base(backend->u.stdio.data);
|
|
|
|
chr = qemu_chr_alloc(common, errp);
|
|
if (!chr) {
|
|
return NULL;
|
|
}
|
|
stdio = g_new0(WinStdioCharState, 1);
|
|
|
|
stdio->hStdIn = GetStdHandle(STD_INPUT_HANDLE);
|
|
if (stdio->hStdIn == INVALID_HANDLE_VALUE) {
|
|
error_setg(errp, "cannot open stdio: invalid handle");
|
|
return NULL;
|
|
}
|
|
|
|
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)) {
|
|
error_setg(errp, "qemu_add_wait_object: failed");
|
|
goto err1;
|
|
}
|
|
} else {
|
|
DWORD dwId;
|
|
|
|
stdio->hInputReadyEvent = CreateEvent(NULL, FALSE, FALSE, NULL);
|
|
stdio->hInputDoneEvent = CreateEvent(NULL, FALSE, FALSE, NULL);
|
|
if (stdio->hInputReadyEvent == INVALID_HANDLE_VALUE
|
|
|| stdio->hInputDoneEvent == INVALID_HANDLE_VALUE) {
|
|
error_setg(errp, "cannot create event");
|
|
goto err2;
|
|
}
|
|
if (qemu_add_wait_object(stdio->hInputReadyEvent,
|
|
win_stdio_thread_wait_func, chr)) {
|
|
error_setg(errp, "qemu_add_wait_object: failed");
|
|
goto err2;
|
|
}
|
|
stdio->hInputThread = CreateThread(NULL, 0, win_stdio_thread,
|
|
chr, 0, &dwId);
|
|
|
|
if (stdio->hInputThread == INVALID_HANDLE_VALUE) {
|
|
error_setg(errp, "cannot create stdio thread");
|
|
goto err3;
|
|
}
|
|
}
|
|
|
|
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;
|
|
|
|
err3:
|
|
qemu_del_wait_object(stdio->hInputReadyEvent, NULL, NULL);
|
|
err2:
|
|
CloseHandle(stdio->hInputReadyEvent);
|
|
CloseHandle(stdio->hInputDoneEvent);
|
|
err1:
|
|
qemu_del_wait_object(stdio->hStdIn, NULL, NULL);
|
|
return NULL;
|
|
}
|
|
#endif /* !_WIN32 */
|
|
|
|
|
|
/***********************************************************/
|
|
/* UDP Net console */
|
|
|
|
typedef struct {
|
|
QIOChannel *ioc;
|
|
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;
|
|
|
|
return qio_channel_write(
|
|
s->ioc, (const char *)buf, len, NULL);
|
|
}
|
|
|
|
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(QIOChannel *chan, GIOCondition cond, void *opaque)
|
|
{
|
|
CharDriverState *chr = opaque;
|
|
NetCharDriver *s = chr->opaque;
|
|
ssize_t ret;
|
|
|
|
if (s->max_size == 0) {
|
|
return TRUE;
|
|
}
|
|
ret = qio_channel_read(
|
|
s->ioc, (char *)s->buf, sizeof(s->buf), NULL);
|
|
if (ret <= 0) {
|
|
remove_fd_in_watch(chr);
|
|
return FALSE;
|
|
}
|
|
s->bufcnt = ret;
|
|
|
|
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,
|
|
GMainContext *context)
|
|
{
|
|
NetCharDriver *s = chr->opaque;
|
|
|
|
remove_fd_in_watch(chr);
|
|
if (s->ioc) {
|
|
chr->fd_in_tag = io_add_watch_poll(s->ioc,
|
|
udp_chr_read_poll,
|
|
udp_chr_read, chr,
|
|
context);
|
|
}
|
|
}
|
|
|
|
static void udp_chr_close(CharDriverState *chr)
|
|
{
|
|
NetCharDriver *s = chr->opaque;
|
|
|
|
remove_fd_in_watch(chr);
|
|
if (s->ioc) {
|
|
object_unref(OBJECT(s->ioc));
|
|
}
|
|
g_free(s);
|
|
qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
|
|
}
|
|
|
|
static CharDriverState *qemu_chr_open_udp(QIOChannelSocket *sioc,
|
|
ChardevCommon *backend,
|
|
Error **errp)
|
|
{
|
|
CharDriverState *chr = NULL;
|
|
NetCharDriver *s = NULL;
|
|
|
|
chr = qemu_chr_alloc(backend, errp);
|
|
if (!chr) {
|
|
return NULL;
|
|
}
|
|
s = g_new0(NetCharDriver, 1);
|
|
|
|
s->ioc = QIO_CHANNEL(sioc);
|
|
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 {
|
|
QIOChannel *ioc; /* Client I/O channel */
|
|
QIOChannelSocket *sioc; /* Client master channel */
|
|
QIOChannelSocket *listen_ioc;
|
|
guint listen_tag;
|
|
QCryptoTLSCreds *tls_creds;
|
|
int connected;
|
|
int max_size;
|
|
int do_telnetopt;
|
|
int do_nodelay;
|
|
int is_unix;
|
|
int *read_msgfds;
|
|
size_t read_msgfds_num;
|
|
int *write_msgfds;
|
|
size_t 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(QIOChannel *chan,
|
|
GIOCondition cond,
|
|
void *opaque);
|
|
|
|
/* 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) {
|
|
int ret = io_channel_send_full(s->ioc, buf, len,
|
|
s->write_msgfds,
|
|
s->write_msgfds_num);
|
|
|
|
/* 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 ret;
|
|
} 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 */
|
|
g_free(s->write_msgfds);
|
|
s->write_msgfds = NULL;
|
|
s->write_msgfds_num = 0;
|
|
|
|
if (!s->connected ||
|
|
!qio_channel_has_feature(s->ioc,
|
|
QIO_CHANNEL_FEATURE_FD_PASS)) {
|
|
return -1;
|
|
}
|
|
|
|
if (num) {
|
|
s->write_msgfds = g_new(int, num);
|
|
memcpy(s->write_msgfds, fds, num * sizeof(int));
|
|
}
|
|
|
|
s->write_msgfds_num = num;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static ssize_t tcp_chr_recv(CharDriverState *chr, char *buf, size_t len)
|
|
{
|
|
TCPCharDriver *s = chr->opaque;
|
|
struct iovec iov = { .iov_base = buf, .iov_len = len };
|
|
int ret;
|
|
size_t i;
|
|
int *msgfds = NULL;
|
|
size_t msgfds_num = 0;
|
|
|
|
if (qio_channel_has_feature(s->ioc, QIO_CHANNEL_FEATURE_FD_PASS)) {
|
|
ret = qio_channel_readv_full(s->ioc, &iov, 1,
|
|
&msgfds, &msgfds_num,
|
|
NULL);
|
|
} else {
|
|
ret = qio_channel_readv_full(s->ioc, &iov, 1,
|
|
NULL, NULL,
|
|
NULL);
|
|
}
|
|
|
|
if (ret == QIO_CHANNEL_ERR_BLOCK) {
|
|
errno = EAGAIN;
|
|
ret = -1;
|
|
} else if (ret == -1) {
|
|
errno = EIO;
|
|
}
|
|
|
|
if (msgfds_num) {
|
|
/* 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 = msgfds;
|
|
s->read_msgfds_num = msgfds_num;
|
|
}
|
|
|
|
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
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
static GSource *tcp_chr_add_watch(CharDriverState *chr, GIOCondition cond)
|
|
{
|
|
TCPCharDriver *s = chr->opaque;
|
|
return qio_channel_create_watch(s->ioc, cond);
|
|
}
|
|
|
|
static void tcp_chr_free_connection(CharDriverState *chr)
|
|
{
|
|
TCPCharDriver *s = chr->opaque;
|
|
int i;
|
|
|
|
if (!s->connected) {
|
|
return;
|
|
}
|
|
|
|
if (s->read_msgfds_num) {
|
|
for (i = 0; i < s->read_msgfds_num; i++) {
|
|
close(s->read_msgfds[i]);
|
|
}
|
|
g_free(s->read_msgfds);
|
|
s->read_msgfds = NULL;
|
|
s->read_msgfds_num = 0;
|
|
}
|
|
|
|
tcp_set_msgfds(chr, NULL, 0);
|
|
remove_fd_in_watch(chr);
|
|
object_unref(OBJECT(s->sioc));
|
|
s->sioc = NULL;
|
|
object_unref(OBJECT(s->ioc));
|
|
s->ioc = NULL;
|
|
g_free(chr->filename);
|
|
chr->filename = NULL;
|
|
s->connected = 0;
|
|
}
|
|
|
|
static void tcp_chr_disconnect(CharDriverState *chr)
|
|
{
|
|
TCPCharDriver *s = chr->opaque;
|
|
|
|
if (!s->connected) {
|
|
return;
|
|
}
|
|
|
|
tcp_chr_free_connection(chr);
|
|
|
|
if (s->listen_ioc) {
|
|
s->listen_tag = qio_channel_add_watch(
|
|
QIO_CHANNEL(s->listen_ioc), G_IO_IN, tcp_chr_accept, chr, NULL);
|
|
}
|
|
chr->filename = SocketAddress_to_str("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(QIOChannel *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 == -1) {
|
|
/* 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;
|
|
}
|
|
|
|
static void tcp_chr_connect(void *opaque)
|
|
{
|
|
CharDriverState *chr = opaque;
|
|
TCPCharDriver *s = chr->opaque;
|
|
|
|
g_free(chr->filename);
|
|
chr->filename = sockaddr_to_str(
|
|
&s->sioc->localAddr, s->sioc->localAddrLen,
|
|
&s->sioc->remoteAddr, s->sioc->remoteAddrLen,
|
|
s->is_listen, s->is_telnet);
|
|
|
|
s->connected = 1;
|
|
if (s->ioc) {
|
|
chr->fd_in_tag = io_add_watch_poll(s->ioc,
|
|
tcp_chr_read_poll,
|
|
tcp_chr_read,
|
|
chr, NULL);
|
|
}
|
|
qemu_chr_be_generic_open(chr);
|
|
}
|
|
|
|
static void tcp_chr_update_read_handler(CharDriverState *chr,
|
|
GMainContext *context)
|
|
{
|
|
TCPCharDriver *s = chr->opaque;
|
|
|
|
if (!s->connected) {
|
|
return;
|
|
}
|
|
|
|
remove_fd_in_watch(chr);
|
|
if (s->ioc) {
|
|
chr->fd_in_tag = io_add_watch_poll(s->ioc,
|
|
tcp_chr_read_poll,
|
|
tcp_chr_read, chr,
|
|
context);
|
|
}
|
|
}
|
|
|
|
typedef struct {
|
|
CharDriverState *chr;
|
|
char buf[12];
|
|
size_t buflen;
|
|
} TCPCharDriverTelnetInit;
|
|
|
|
static gboolean tcp_chr_telnet_init_io(QIOChannel *ioc,
|
|
GIOCondition cond G_GNUC_UNUSED,
|
|
gpointer user_data)
|
|
{
|
|
TCPCharDriverTelnetInit *init = user_data;
|
|
ssize_t ret;
|
|
|
|
ret = qio_channel_write(ioc, init->buf, init->buflen, NULL);
|
|
if (ret < 0) {
|
|
if (ret == QIO_CHANNEL_ERR_BLOCK) {
|
|
ret = 0;
|
|
} else {
|
|
tcp_chr_disconnect(init->chr);
|
|
return FALSE;
|
|
}
|
|
}
|
|
init->buflen -= ret;
|
|
|
|
if (init->buflen == 0) {
|
|
tcp_chr_connect(init->chr);
|
|
return FALSE;
|
|
}
|
|
|
|
memmove(init->buf, init->buf + ret, init->buflen);
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
static void tcp_chr_telnet_init(CharDriverState *chr)
|
|
{
|
|
TCPCharDriver *s = chr->opaque;
|
|
TCPCharDriverTelnetInit *init =
|
|
g_new0(TCPCharDriverTelnetInit, 1);
|
|
size_t n = 0;
|
|
|
|
init->chr = chr;
|
|
init->buflen = 12;
|
|
|
|
#define IACSET(x, a, b, c) \
|
|
do { \
|
|
x[n++] = a; \
|
|
x[n++] = b; \
|
|
x[n++] = c; \
|
|
} while (0)
|
|
|
|
/* Prep the telnet negotion to put telnet in binary,
|
|
* no echo, single char mode */
|
|
IACSET(init->buf, 0xff, 0xfb, 0x01); /* IAC WILL ECHO */
|
|
IACSET(init->buf, 0xff, 0xfb, 0x03); /* IAC WILL Suppress go ahead */
|
|
IACSET(init->buf, 0xff, 0xfb, 0x00); /* IAC WILL Binary */
|
|
IACSET(init->buf, 0xff, 0xfd, 0x00); /* IAC DO Binary */
|
|
|
|
#undef IACSET
|
|
|
|
qio_channel_add_watch(
|
|
s->ioc, G_IO_OUT,
|
|
tcp_chr_telnet_init_io,
|
|
init, NULL);
|
|
}
|
|
|
|
|
|
static void tcp_chr_tls_handshake(Object *source,
|
|
Error *err,
|
|
gpointer user_data)
|
|
{
|
|
CharDriverState *chr = user_data;
|
|
TCPCharDriver *s = chr->opaque;
|
|
|
|
if (err) {
|
|
tcp_chr_disconnect(chr);
|
|
} else {
|
|
if (s->do_telnetopt) {
|
|
tcp_chr_telnet_init(chr);
|
|
} else {
|
|
tcp_chr_connect(chr);
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
static void tcp_chr_tls_init(CharDriverState *chr)
|
|
{
|
|
TCPCharDriver *s = chr->opaque;
|
|
QIOChannelTLS *tioc;
|
|
Error *err = NULL;
|
|
|
|
if (s->is_listen) {
|
|
tioc = qio_channel_tls_new_server(
|
|
s->ioc, s->tls_creds,
|
|
NULL, /* XXX Use an ACL */
|
|
&err);
|
|
} else {
|
|
tioc = qio_channel_tls_new_client(
|
|
s->ioc, s->tls_creds,
|
|
s->addr->u.inet.data->host,
|
|
&err);
|
|
}
|
|
if (tioc == NULL) {
|
|
error_free(err);
|
|
tcp_chr_disconnect(chr);
|
|
}
|
|
object_unref(OBJECT(s->ioc));
|
|
s->ioc = QIO_CHANNEL(tioc);
|
|
|
|
qio_channel_tls_handshake(tioc,
|
|
tcp_chr_tls_handshake,
|
|
chr,
|
|
NULL);
|
|
}
|
|
|
|
|
|
static int tcp_chr_new_client(CharDriverState *chr, QIOChannelSocket *sioc)
|
|
{
|
|
TCPCharDriver *s = chr->opaque;
|
|
if (s->ioc != NULL) {
|
|
return -1;
|
|
}
|
|
|
|
s->ioc = QIO_CHANNEL(sioc);
|
|
object_ref(OBJECT(sioc));
|
|
s->sioc = sioc;
|
|
object_ref(OBJECT(sioc));
|
|
|
|
qio_channel_set_blocking(s->ioc, false, NULL);
|
|
|
|
if (s->do_nodelay) {
|
|
qio_channel_set_delay(s->ioc, false);
|
|
}
|
|
if (s->listen_tag) {
|
|
g_source_remove(s->listen_tag);
|
|
s->listen_tag = 0;
|
|
}
|
|
|
|
if (s->tls_creds) {
|
|
tcp_chr_tls_init(chr);
|
|
} else {
|
|
if (s->do_telnetopt) {
|
|
tcp_chr_telnet_init(chr);
|
|
} else {
|
|
tcp_chr_connect(chr);
|
|
}
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
|
|
static int tcp_chr_add_client(CharDriverState *chr, int fd)
|
|
{
|
|
int ret;
|
|
QIOChannelSocket *sioc;
|
|
|
|
sioc = qio_channel_socket_new_fd(fd, NULL);
|
|
if (!sioc) {
|
|
return -1;
|
|
}
|
|
ret = tcp_chr_new_client(chr, sioc);
|
|
object_unref(OBJECT(sioc));
|
|
return ret;
|
|
}
|
|
|
|
static gboolean tcp_chr_accept(QIOChannel *channel,
|
|
GIOCondition cond,
|
|
void *opaque)
|
|
{
|
|
CharDriverState *chr = opaque;
|
|
QIOChannelSocket *sioc;
|
|
|
|
sioc = qio_channel_socket_accept(QIO_CHANNEL_SOCKET(channel),
|
|
NULL);
|
|
if (!sioc) {
|
|
return TRUE;
|
|
}
|
|
|
|
tcp_chr_new_client(chr, sioc);
|
|
|
|
object_unref(OBJECT(sioc));
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
static int tcp_chr_wait_connected(CharDriverState *chr, Error **errp)
|
|
{
|
|
TCPCharDriver *s = chr->opaque;
|
|
QIOChannelSocket *sioc;
|
|
|
|
/* It can't wait on s->connected, since it is set asynchronously
|
|
* in TLS and telnet cases, only wait for an accepted socket */
|
|
while (!s->ioc) {
|
|
if (s->is_listen) {
|
|
fprintf(stderr, "QEMU waiting for connection on: %s\n",
|
|
chr->filename);
|
|
qio_channel_set_blocking(QIO_CHANNEL(s->listen_ioc), true, NULL);
|
|
tcp_chr_accept(QIO_CHANNEL(s->listen_ioc), G_IO_IN, chr);
|
|
qio_channel_set_blocking(QIO_CHANNEL(s->listen_ioc), false, NULL);
|
|
} else {
|
|
sioc = qio_channel_socket_new();
|
|
if (qio_channel_socket_connect_sync(sioc, s->addr, errp) < 0) {
|
|
object_unref(OBJECT(sioc));
|
|
return -1;
|
|
}
|
|
tcp_chr_new_client(chr, sioc);
|
|
object_unref(OBJECT(sioc));
|
|
}
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
int qemu_chr_wait_connected(CharDriverState *chr, Error **errp)
|
|
{
|
|
if (chr->chr_wait_connected) {
|
|
return chr->chr_wait_connected(chr, errp);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void tcp_chr_close(CharDriverState *chr)
|
|
{
|
|
TCPCharDriver *s = chr->opaque;
|
|
|
|
tcp_chr_free_connection(chr);
|
|
|
|
if (s->reconnect_timer) {
|
|
g_source_remove(s->reconnect_timer);
|
|
s->reconnect_timer = 0;
|
|
}
|
|
qapi_free_SocketAddress(s->addr);
|
|
if (s->listen_tag) {
|
|
g_source_remove(s->listen_tag);
|
|
s->listen_tag = 0;
|
|
}
|
|
if (s->listen_ioc) {
|
|
object_unref(OBJECT(s->listen_ioc));
|
|
}
|
|
if (s->tls_creds) {
|
|
object_unref(OBJECT(s->tls_creds));
|
|
}
|
|
g_free(s);
|
|
qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
|
|
}
|
|
|
|
|
|
static void qemu_chr_socket_connected(Object *src, Error *err, void *opaque)
|
|
{
|
|
QIOChannelSocket *sioc = QIO_CHANNEL_SOCKET(src);
|
|
CharDriverState *chr = opaque;
|
|
TCPCharDriver *s = chr->opaque;
|
|
|
|
if (err) {
|
|
check_report_connect_error(chr, err);
|
|
object_unref(src);
|
|
return;
|
|
}
|
|
|
|
s->connect_err_reported = false;
|
|
tcp_chr_new_client(chr, sioc);
|
|
object_unref(OBJECT(sioc));
|
|
}
|
|
|
|
|
|
/*********************************************************/
|
|
/* 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(const char *id,
|
|
ChardevBackend *backend,
|
|
ChardevReturn *ret,
|
|
Error **errp)
|
|
{
|
|
ChardevRingbuf *opts = backend->u.ringbuf.data;
|
|
ChardevCommon *common = qapi_ChardevRingbuf_base(opts);
|
|
CharDriverState *chr;
|
|
RingBufCharDriver *d;
|
|
|
|
chr = qemu_chr_alloc(common, errp);
|
|
if (!chr) {
|
|
return NULL;
|
|
}
|
|
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);
|
|
qemu_chr_free_common(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 = qbase64_decode(data, -1,
|
|
&write_count,
|
|
errp);
|
|
if (!write_data) {
|
|
return;
|
|
}
|
|
} 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;
|
|
}
|
|
|
|
void qemu_chr_parse_common(QemuOpts *opts, ChardevCommon *backend)
|
|
{
|
|
const char *logfile = qemu_opt_get(opts, "logfile");
|
|
|
|
backend->has_logfile = logfile != NULL;
|
|
backend->logfile = logfile ? g_strdup(logfile) : NULL;
|
|
|
|
backend->has_logappend = true;
|
|
backend->logappend = qemu_opt_get_bool(opts, "logappend", false);
|
|
}
|
|
|
|
|
|
static void qemu_chr_parse_file_out(QemuOpts *opts, ChardevBackend *backend,
|
|
Error **errp)
|
|
{
|
|
const char *path = qemu_opt_get(opts, "path");
|
|
ChardevFile *file;
|
|
|
|
if (path == NULL) {
|
|
error_setg(errp, "chardev: file: no filename given");
|
|
return;
|
|
}
|
|
file = backend->u.file.data = g_new0(ChardevFile, 1);
|
|
qemu_chr_parse_common(opts, qapi_ChardevFile_base(file));
|
|
file->out = g_strdup(path);
|
|
|
|
file->has_append = true;
|
|
file->append = qemu_opt_get_bool(opts, "append", false);
|
|
}
|
|
|
|
static void qemu_chr_parse_stdio(QemuOpts *opts, ChardevBackend *backend,
|
|
Error **errp)
|
|
{
|
|
ChardevStdio *stdio;
|
|
|
|
stdio = backend->u.stdio.data = g_new0(ChardevStdio, 1);
|
|
qemu_chr_parse_common(opts, qapi_ChardevStdio_base(stdio));
|
|
stdio->has_signal = true;
|
|
stdio->signal = qemu_opt_get_bool(opts, "signal", true);
|
|
}
|
|
|
|
#ifdef HAVE_CHARDEV_SERIAL
|
|
static void qemu_chr_parse_serial(QemuOpts *opts, ChardevBackend *backend,
|
|
Error **errp)
|
|
{
|
|
const char *device = qemu_opt_get(opts, "path");
|
|
ChardevHostdev *serial;
|
|
|
|
if (device == NULL) {
|
|
error_setg(errp, "chardev: serial/tty: no device path given");
|
|
return;
|
|
}
|
|
serial = backend->u.serial.data = g_new0(ChardevHostdev, 1);
|
|
qemu_chr_parse_common(opts, qapi_ChardevHostdev_base(serial));
|
|
serial->device = g_strdup(device);
|
|
}
|
|
#endif
|
|
|
|
#ifdef HAVE_CHARDEV_PARPORT
|
|
static void qemu_chr_parse_parallel(QemuOpts *opts, ChardevBackend *backend,
|
|
Error **errp)
|
|
{
|
|
const char *device = qemu_opt_get(opts, "path");
|
|
ChardevHostdev *parallel;
|
|
|
|
if (device == NULL) {
|
|
error_setg(errp, "chardev: parallel: no device path given");
|
|
return;
|
|
}
|
|
parallel = backend->u.parallel.data = g_new0(ChardevHostdev, 1);
|
|
qemu_chr_parse_common(opts, qapi_ChardevHostdev_base(parallel));
|
|
parallel->device = g_strdup(device);
|
|
}
|
|
#endif
|
|
|
|
static void qemu_chr_parse_pipe(QemuOpts *opts, ChardevBackend *backend,
|
|
Error **errp)
|
|
{
|
|
const char *device = qemu_opt_get(opts, "path");
|
|
ChardevHostdev *dev;
|
|
|
|
if (device == NULL) {
|
|
error_setg(errp, "chardev: pipe: no device path given");
|
|
return;
|
|
}
|
|
dev = backend->u.pipe.data = g_new0(ChardevHostdev, 1);
|
|
qemu_chr_parse_common(opts, qapi_ChardevHostdev_base(dev));
|
|
dev->device = g_strdup(device);
|
|
}
|
|
|
|
static void qemu_chr_parse_ringbuf(QemuOpts *opts, ChardevBackend *backend,
|
|
Error **errp)
|
|
{
|
|
int val;
|
|
ChardevRingbuf *ringbuf;
|
|
|
|
ringbuf = backend->u.ringbuf.data = g_new0(ChardevRingbuf, 1);
|
|
qemu_chr_parse_common(opts, qapi_ChardevRingbuf_base(ringbuf));
|
|
|
|
val = qemu_opt_get_size(opts, "size", 0);
|
|
if (val != 0) {
|
|
ringbuf->has_size = true;
|
|
ringbuf->size = val;
|
|
}
|
|
}
|
|
|
|
static void qemu_chr_parse_mux(QemuOpts *opts, ChardevBackend *backend,
|
|
Error **errp)
|
|
{
|
|
const char *chardev = qemu_opt_get(opts, "chardev");
|
|
ChardevMux *mux;
|
|
|
|
if (chardev == NULL) {
|
|
error_setg(errp, "chardev: mux: no chardev given");
|
|
return;
|
|
}
|
|
mux = backend->u.mux.data = g_new0(ChardevMux, 1);
|
|
qemu_chr_parse_common(opts, qapi_ChardevMux_base(mux));
|
|
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");
|
|
const char *tls_creds = qemu_opt_get(opts, "tls-creds");
|
|
SocketAddress *addr;
|
|
ChardevSocket *sock;
|
|
|
|
if (!path) {
|
|
if (!host) {
|
|
error_setg(errp, "chardev: socket: no host given");
|
|
return;
|
|
}
|
|
if (!port) {
|
|
error_setg(errp, "chardev: socket: no port given");
|
|
return;
|
|
}
|
|
} else {
|
|
if (tls_creds) {
|
|
error_setg(errp, "TLS can only be used over TCP socket");
|
|
return;
|
|
}
|
|
}
|
|
|
|
sock = backend->u.socket.data = g_new0(ChardevSocket, 1);
|
|
qemu_chr_parse_common(opts, qapi_ChardevSocket_base(sock));
|
|
|
|
sock->has_nodelay = true;
|
|
sock->nodelay = do_nodelay;
|
|
sock->has_server = true;
|
|
sock->server = is_listen;
|
|
sock->has_telnet = true;
|
|
sock->telnet = is_telnet;
|
|
sock->has_wait = true;
|
|
sock->wait = is_waitconnect;
|
|
sock->has_reconnect = true;
|
|
sock->reconnect = reconnect;
|
|
sock->tls_creds = g_strdup(tls_creds);
|
|
|
|
addr = g_new0(SocketAddress, 1);
|
|
if (path) {
|
|
UnixSocketAddress *q_unix;
|
|
addr->type = SOCKET_ADDRESS_KIND_UNIX;
|
|
q_unix = addr->u.q_unix.data = g_new0(UnixSocketAddress, 1);
|
|
q_unix->path = g_strdup(path);
|
|
} else {
|
|
addr->type = SOCKET_ADDRESS_KIND_INET;
|
|
addr->u.inet.data = g_new(InetSocketAddress, 1);
|
|
*addr->u.inet.data = (InetSocketAddress) {
|
|
.host = g_strdup(host),
|
|
.port = g_strdup(port),
|
|
.has_to = qemu_opt_get(opts, "to"),
|
|
.to = qemu_opt_get_number(opts, "to", 0),
|
|
.has_ipv4 = qemu_opt_get(opts, "ipv4"),
|
|
.ipv4 = qemu_opt_get_bool(opts, "ipv4", 0),
|
|
.has_ipv6 = qemu_opt_get(opts, "ipv6"),
|
|
.ipv6 = qemu_opt_get_bool(opts, "ipv6", 0),
|
|
};
|
|
}
|
|
sock->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;
|
|
ChardevUdp *udp;
|
|
|
|
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;
|
|
}
|
|
|
|
udp = backend->u.udp.data = g_new0(ChardevUdp, 1);
|
|
qemu_chr_parse_common(opts, qapi_ChardevUdp_base(udp));
|
|
|
|
addr = g_new0(SocketAddress, 1);
|
|
addr->type = SOCKET_ADDRESS_KIND_INET;
|
|
addr->u.inet.data = g_new(InetSocketAddress, 1);
|
|
*addr->u.inet.data = (InetSocketAddress) {
|
|
.host = g_strdup(host),
|
|
.port = g_strdup(port),
|
|
.has_ipv4 = qemu_opt_get(opts, "ipv4"),
|
|
.ipv4 = qemu_opt_get_bool(opts, "ipv4", 0),
|
|
.has_ipv6 = qemu_opt_get(opts, "ipv6"),
|
|
.ipv6 = qemu_opt_get_bool(opts, "ipv6", 0),
|
|
};
|
|
udp->remote = addr;
|
|
|
|
if (has_local) {
|
|
udp->has_local = true;
|
|
addr = g_new0(SocketAddress, 1);
|
|
addr->type = SOCKET_ADDRESS_KIND_INET;
|
|
addr->u.inet.data = g_new(InetSocketAddress, 1);
|
|
*addr->u.inet.data = (InetSocketAddress) {
|
|
.host = g_strdup(localaddr),
|
|
.port = g_strdup(localport),
|
|
};
|
|
udp->local = addr;
|
|
}
|
|
}
|
|
|
|
typedef struct CharDriver {
|
|
const char *name;
|
|
ChardevBackendKind kind;
|
|
void (*parse)(QemuOpts *opts, ChardevBackend *backend, Error **errp);
|
|
CharDriverState *(*create)(const char *id, ChardevBackend *backend,
|
|
ChardevReturn *ret, Error **errp);
|
|
} CharDriver;
|
|
|
|
static GSList *backends;
|
|
|
|
void register_char_driver(const char *name, ChardevBackendKind kind,
|
|
void (*parse)(QemuOpts *opts, ChardevBackend *backend, Error **errp),
|
|
CharDriverState *(*create)(const char *id, ChardevBackend *backend,
|
|
ChardevReturn *ret, Error **errp))
|
|
{
|
|
CharDriver *s;
|
|
|
|
s = g_malloc0(sizeof(*s));
|
|
s->name = g_strdup(name);
|
|
s->kind = kind;
|
|
s->parse = parse;
|
|
s->create = create;
|
|
|
|
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 (qemu_opt_get(opts, "backend") == NULL) {
|
|
error_setg(errp, "chardev: \"%s\" missing backend",
|
|
qemu_opts_id(opts));
|
|
goto err;
|
|
}
|
|
|
|
if (is_help_option(qemu_opt_get(opts, "backend"))) {
|
|
fprintf(stderr, "Available chardev backend types:\n");
|
|
for (i = backends; i; i = i->next) {
|
|
cd = i->data;
|
|
fprintf(stderr, "%s\n", cd->name);
|
|
}
|
|
exit(!is_help_option(qemu_opt_get(opts, "backend")));
|
|
}
|
|
|
|
if (id == NULL) {
|
|
error_setg(errp, "chardev: no id specified");
|
|
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->type = cd->kind;
|
|
if (cd->parse) {
|
|
cd->parse(opts, backend, &local_err);
|
|
if (local_err) {
|
|
error_propagate(errp, local_err);
|
|
goto qapi_out;
|
|
}
|
|
} else {
|
|
ChardevCommon *cc = g_new0(ChardevCommon, 1);
|
|
qemu_chr_parse_common(opts, cc);
|
|
backend->u.null.data = cc; /* Any ChardevCommon member would work */
|
|
}
|
|
|
|
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->u.mux.data = g_new0(ChardevMux, 1);
|
|
backend->type = CHARDEV_BACKEND_KIND_MUX;
|
|
backend->u.mux.data->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_noreplay(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;
|
|
}
|
|
|
|
CharDriverState *qemu_chr_new(const char *label, const char *filename, void (*init)(struct CharDriverState *s))
|
|
{
|
|
CharDriverState *chr;
|
|
chr = qemu_chr_new_noreplay(label, filename, init);
|
|
if (chr) {
|
|
chr->replay = replay_mode != REPLAY_MODE_NONE;
|
|
if (chr->replay && chr->chr_ioctl) {
|
|
fprintf(stderr,
|
|
"Replay: ioctl is not supported for serial devices yet\n");
|
|
}
|
|
replay_register_char_driver(chr);
|
|
}
|
|
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);
|
|
}
|
|
}
|
|
|
|
guint 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 0;
|
|
}
|
|
|
|
src = s->chr_add_watch(s, cond);
|
|
if (!src) {
|
|
return 0;
|
|
}
|
|
|
|
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_disconnect(CharDriverState *chr)
|
|
{
|
|
if (chr->chr_disconnect) {
|
|
chr->chr_disconnect(chr);
|
|
}
|
|
}
|
|
|
|
static void qemu_chr_free_common(CharDriverState *chr)
|
|
{
|
|
g_free(chr->filename);
|
|
g_free(chr->label);
|
|
qemu_opts_del(chr->opts);
|
|
if (chr->logfd != -1) {
|
|
close(chr->logfd);
|
|
}
|
|
qemu_mutex_destroy(&chr->chr_write_lock);
|
|
g_free(chr);
|
|
}
|
|
|
|
void qemu_chr_free(CharDriverState *chr)
|
|
{
|
|
if (chr->chr_close) {
|
|
chr->chr_close(chr);
|
|
}
|
|
qemu_chr_free_common(chr);
|
|
}
|
|
|
|
void qemu_chr_delete(CharDriverState *chr)
|
|
{
|
|
QTAILQ_REMOVE(&chardevs, chr, next);
|
|
qemu_chr_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;
|
|
}
|
|
|
|
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 = "tls-creds",
|
|
.type = QEMU_OPT_STRING,
|
|
},{
|
|
.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,
|
|
},{
|
|
.name = "append",
|
|
.type = QEMU_OPT_BOOL,
|
|
},{
|
|
.name = "logfile",
|
|
.type = QEMU_OPT_STRING,
|
|
},{
|
|
.name = "logappend",
|
|
.type = QEMU_OPT_BOOL,
|
|
},
|
|
{ /* end of list */ }
|
|
},
|
|
};
|
|
|
|
#ifdef _WIN32
|
|
|
|
static CharDriverState *qmp_chardev_open_file(const char *id,
|
|
ChardevBackend *backend,
|
|
ChardevReturn *ret,
|
|
Error **errp)
|
|
{
|
|
ChardevFile *file = backend->u.file.data;
|
|
ChardevCommon *common = qapi_ChardevFile_base(file);
|
|
HANDLE out;
|
|
DWORD accessmode;
|
|
DWORD flags;
|
|
|
|
if (file->has_in) {
|
|
error_setg(errp, "input file not supported");
|
|
return NULL;
|
|
}
|
|
|
|
if (file->has_append && file->append) {
|
|
/* Append to file if it already exists. */
|
|
accessmode = FILE_GENERIC_WRITE & ~FILE_WRITE_DATA;
|
|
flags = OPEN_ALWAYS;
|
|
} else {
|
|
/* Truncate file if it already exists. */
|
|
accessmode = GENERIC_WRITE;
|
|
flags = CREATE_ALWAYS;
|
|
}
|
|
|
|
out = CreateFile(file->out, accessmode, FILE_SHARE_READ, NULL, flags,
|
|
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, common, errp);
|
|
}
|
|
|
|
static CharDriverState *qmp_chardev_open_serial(const char *id,
|
|
ChardevBackend *backend,
|
|
ChardevReturn *ret,
|
|
Error **errp)
|
|
{
|
|
ChardevHostdev *serial = backend->u.serial.data;
|
|
ChardevCommon *common = qapi_ChardevHostdev_base(serial);
|
|
return qemu_chr_open_win_path(serial->device, common, errp);
|
|
}
|
|
|
|
#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(const char *id,
|
|
ChardevBackend *backend,
|
|
ChardevReturn *ret,
|
|
Error **errp)
|
|
{
|
|
ChardevFile *file = backend->u.file.data;
|
|
ChardevCommon *common = qapi_ChardevFile_base(file);
|
|
int flags, in = -1, out;
|
|
|
|
flags = O_WRONLY | O_CREAT | O_BINARY;
|
|
if (file->has_append && file->append) {
|
|
flags |= O_APPEND;
|
|
} else {
|
|
flags |= O_TRUNC;
|
|
}
|
|
|
|
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, common, errp);
|
|
}
|
|
|
|
#ifdef HAVE_CHARDEV_SERIAL
|
|
static CharDriverState *qmp_chardev_open_serial(const char *id,
|
|
ChardevBackend *backend,
|
|
ChardevReturn *ret,
|
|
Error **errp)
|
|
{
|
|
ChardevHostdev *serial = backend->u.serial.data;
|
|
ChardevCommon *common = qapi_ChardevHostdev_base(serial);
|
|
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, common, errp);
|
|
}
|
|
#endif
|
|
|
|
#ifdef HAVE_CHARDEV_PARPORT
|
|
static CharDriverState *qmp_chardev_open_parallel(const char *id,
|
|
ChardevBackend *backend,
|
|
ChardevReturn *ret,
|
|
Error **errp)
|
|
{
|
|
ChardevHostdev *parallel = backend->u.parallel.data;
|
|
ChardevCommon *common = qapi_ChardevHostdev_base(parallel);
|
|
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, common, errp);
|
|
}
|
|
#endif
|
|
|
|
#endif /* WIN32 */
|
|
|
|
static gboolean socket_reconnect_timeout(gpointer opaque)
|
|
{
|
|
CharDriverState *chr = opaque;
|
|
TCPCharDriver *s = chr->opaque;
|
|
QIOChannelSocket *sioc;
|
|
|
|
s->reconnect_timer = 0;
|
|
|
|
if (chr->be_open) {
|
|
return false;
|
|
}
|
|
|
|
sioc = qio_channel_socket_new();
|
|
qio_channel_socket_connect_async(sioc, s->addr,
|
|
qemu_chr_socket_connected,
|
|
chr, NULL);
|
|
|
|
return false;
|
|
}
|
|
|
|
static CharDriverState *qmp_chardev_open_socket(const char *id,
|
|
ChardevBackend *backend,
|
|
ChardevReturn *ret,
|
|
Error **errp)
|
|
{
|
|
CharDriverState *chr;
|
|
TCPCharDriver *s;
|
|
ChardevSocket *sock = backend->u.socket.data;
|
|
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;
|
|
ChardevCommon *common = qapi_ChardevSocket_base(sock);
|
|
QIOChannelSocket *sioc = NULL;
|
|
|
|
chr = qemu_chr_alloc(common, errp);
|
|
if (!chr) {
|
|
return NULL;
|
|
}
|
|
s = g_new0(TCPCharDriver, 1);
|
|
|
|
s->is_unix = addr->type == SOCKET_ADDRESS_KIND_UNIX;
|
|
s->is_listen = is_listen;
|
|
s->is_telnet = is_telnet;
|
|
s->do_nodelay = do_nodelay;
|
|
if (sock->tls_creds) {
|
|
Object *creds;
|
|
creds = object_resolve_path_component(
|
|
object_get_objects_root(), sock->tls_creds);
|
|
if (!creds) {
|
|
error_setg(errp, "No TLS credentials with id '%s'",
|
|
sock->tls_creds);
|
|
goto error;
|
|
}
|
|
s->tls_creds = (QCryptoTLSCreds *)
|
|
object_dynamic_cast(creds,
|
|
TYPE_QCRYPTO_TLS_CREDS);
|
|
if (!s->tls_creds) {
|
|
error_setg(errp, "Object with id '%s' is not TLS credentials",
|
|
sock->tls_creds);
|
|
goto error;
|
|
}
|
|
object_ref(OBJECT(s->tls_creds));
|
|
if (is_listen) {
|
|
if (s->tls_creds->endpoint != QCRYPTO_TLS_CREDS_ENDPOINT_SERVER) {
|
|
error_setg(errp, "%s",
|
|
"Expected TLS credentials for server endpoint");
|
|
goto error;
|
|
}
|
|
} else {
|
|
if (s->tls_creds->endpoint != QCRYPTO_TLS_CREDS_ENDPOINT_CLIENT) {
|
|
error_setg(errp, "%s",
|
|
"Expected TLS credentials for client endpoint");
|
|
goto error;
|
|
}
|
|
}
|
|
}
|
|
|
|
s->addr = QAPI_CLONE(SocketAddress, sock->addr);
|
|
|
|
chr->opaque = s;
|
|
chr->chr_wait_connected = tcp_chr_wait_connected;
|
|
chr->chr_write = tcp_chr_write;
|
|
chr->chr_sync_read = tcp_chr_sync_read;
|
|
chr->chr_close = tcp_chr_close;
|
|
chr->chr_disconnect = tcp_chr_disconnect;
|
|
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 = SocketAddress_to_str("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) {
|
|
sioc = qio_channel_socket_new();
|
|
qio_channel_socket_connect_async(sioc, s->addr,
|
|
qemu_chr_socket_connected,
|
|
chr, NULL);
|
|
} else {
|
|
if (s->is_listen) {
|
|
sioc = qio_channel_socket_new();
|
|
if (qio_channel_socket_listen_sync(sioc, s->addr, errp) < 0) {
|
|
goto error;
|
|
}
|
|
s->listen_ioc = sioc;
|
|
if (is_waitconnect &&
|
|
qemu_chr_wait_connected(chr, errp) < 0) {
|
|
goto error;
|
|
}
|
|
if (!s->ioc) {
|
|
s->listen_tag = qio_channel_add_watch(
|
|
QIO_CHANNEL(s->listen_ioc), G_IO_IN,
|
|
tcp_chr_accept, chr, NULL);
|
|
}
|
|
} else if (qemu_chr_wait_connected(chr, errp) < 0) {
|
|
goto error;
|
|
}
|
|
}
|
|
|
|
return chr;
|
|
|
|
error:
|
|
if (sioc) {
|
|
object_unref(OBJECT(sioc));
|
|
}
|
|
if (s->tls_creds) {
|
|
object_unref(OBJECT(s->tls_creds));
|
|
}
|
|
g_free(s);
|
|
qemu_chr_free_common(chr);
|
|
return NULL;
|
|
}
|
|
|
|
static CharDriverState *qmp_chardev_open_udp(const char *id,
|
|
ChardevBackend *backend,
|
|
ChardevReturn *ret,
|
|
Error **errp)
|
|
{
|
|
ChardevUdp *udp = backend->u.udp.data;
|
|
ChardevCommon *common = qapi_ChardevUdp_base(udp);
|
|
QIOChannelSocket *sioc = qio_channel_socket_new();
|
|
|
|
if (qio_channel_socket_dgram_sync(sioc,
|
|
udp->local, udp->remote,
|
|
errp) < 0) {
|
|
object_unref(OBJECT(sioc));
|
|
return NULL;
|
|
}
|
|
return qemu_chr_open_udp(sioc, common, errp);
|
|
}
|
|
|
|
ChardevReturn *qmp_chardev_add(const char *id, ChardevBackend *backend,
|
|
Error **errp)
|
|
{
|
|
ChardevReturn *ret = g_new0(ChardevReturn, 1);
|
|
CharDriverState *chr = NULL;
|
|
Error *local_err = NULL;
|
|
GSList *i;
|
|
CharDriver *cd;
|
|
|
|
chr = qemu_chr_find(id);
|
|
if (chr) {
|
|
error_setg(errp, "Chardev '%s' already exists", id);
|
|
g_free(ret);
|
|
return NULL;
|
|
}
|
|
|
|
for (i = backends; i; i = i->next) {
|
|
cd = i->data;
|
|
|
|
if (cd->kind == backend->type) {
|
|
chr = cd->create(id, backend, ret, &local_err);
|
|
if (local_err) {
|
|
error_propagate(errp, local_err);
|
|
goto out_error;
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (chr == NULL) {
|
|
assert(!i);
|
|
error_setg(errp, "chardev backend not available");
|
|
goto out_error;
|
|
}
|
|
|
|
chr->label = g_strdup(id);
|
|
chr->avail_connections =
|
|
(backend->type == CHARDEV_BACKEND_KIND_MUX) ? MAX_MUX : 1;
|
|
if (!chr->filename) {
|
|
chr->filename = g_strdup(ChardevBackendKind_lookup[backend->type]);
|
|
}
|
|
if (!chr->explicit_be_open) {
|
|
qemu_chr_be_event(chr, CHR_EVENT_OPENED);
|
|
}
|
|
QTAILQ_INSERT_TAIL(&chardevs, chr, next);
|
|
return ret;
|
|
|
|
out_error:
|
|
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;
|
|
}
|
|
if (chr->replay) {
|
|
error_setg(errp,
|
|
"Chardev '%s' cannot be unplugged in record/replay mode", id);
|
|
return;
|
|
}
|
|
qemu_chr_delete(chr);
|
|
}
|
|
|
|
void qemu_chr_cleanup(void)
|
|
{
|
|
CharDriverState *chr, *tmp;
|
|
|
|
QTAILQ_FOREACH_SAFE(chr, &chardevs, next, tmp) {
|
|
qemu_chr_delete(chr);
|
|
}
|
|
}
|
|
|
|
static void register_types(void)
|
|
{
|
|
register_char_driver("null", CHARDEV_BACKEND_KIND_NULL, NULL,
|
|
qemu_chr_open_null);
|
|
register_char_driver("socket", CHARDEV_BACKEND_KIND_SOCKET,
|
|
qemu_chr_parse_socket, qmp_chardev_open_socket);
|
|
register_char_driver("udp", CHARDEV_BACKEND_KIND_UDP, qemu_chr_parse_udp,
|
|
qmp_chardev_open_udp);
|
|
register_char_driver("ringbuf", CHARDEV_BACKEND_KIND_RINGBUF,
|
|
qemu_chr_parse_ringbuf, qemu_chr_open_ringbuf);
|
|
register_char_driver("file", CHARDEV_BACKEND_KIND_FILE,
|
|
qemu_chr_parse_file_out, qmp_chardev_open_file);
|
|
register_char_driver("stdio", CHARDEV_BACKEND_KIND_STDIO,
|
|
qemu_chr_parse_stdio, qemu_chr_open_stdio);
|
|
#if defined HAVE_CHARDEV_SERIAL
|
|
register_char_driver("serial", CHARDEV_BACKEND_KIND_SERIAL,
|
|
qemu_chr_parse_serial, qmp_chardev_open_serial);
|
|
register_char_driver("tty", CHARDEV_BACKEND_KIND_SERIAL,
|
|
qemu_chr_parse_serial, qmp_chardev_open_serial);
|
|
#endif
|
|
#ifdef HAVE_CHARDEV_PARPORT
|
|
register_char_driver("parallel", CHARDEV_BACKEND_KIND_PARALLEL,
|
|
qemu_chr_parse_parallel, qmp_chardev_open_parallel);
|
|
register_char_driver("parport", CHARDEV_BACKEND_KIND_PARALLEL,
|
|
qemu_chr_parse_parallel, qmp_chardev_open_parallel);
|
|
#endif
|
|
#ifdef HAVE_CHARDEV_PTY
|
|
register_char_driver("pty", CHARDEV_BACKEND_KIND_PTY, NULL,
|
|
qemu_chr_open_pty);
|
|
#endif
|
|
#ifdef _WIN32
|
|
register_char_driver("console", CHARDEV_BACKEND_KIND_CONSOLE, NULL,
|
|
qemu_chr_open_win_con);
|
|
#endif
|
|
register_char_driver("pipe", CHARDEV_BACKEND_KIND_PIPE,
|
|
qemu_chr_parse_pipe, qemu_chr_open_pipe);
|
|
register_char_driver("mux", CHARDEV_BACKEND_KIND_MUX, qemu_chr_parse_mux,
|
|
qemu_chr_open_mux);
|
|
/* Bug-compatibility: */
|
|
register_char_driver("memory", CHARDEV_BACKEND_KIND_MEMORY,
|
|
qemu_chr_parse_ringbuf, qemu_chr_open_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);
|