684a096eaf
The current code is oddly written and have equally odd semantics. Despite the '_all' suffix, upon EAGAIN the result will be a partial write but instead of returning the partial write, we return EAGAIN. Change the behavior to write as much as we can until we get an EAGAIN returning a partial write if we do. Reported-by: Amit Shah <amit.shah@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com> Message-id: 1364575190-731-1-git-send-email-aliguori@us.ibm.com
3863 lines
98 KiB
C
3863 lines
98 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-common.h"
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#include "monitor/monitor.h"
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#include "ui/console.h"
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#include "sysemu/sysemu.h"
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#include "qemu/timer.h"
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#include "char/char.h"
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#include "hw/usb.h"
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#include "qmp-commands.h"
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#include <unistd.h>
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#include <fcntl.h>
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#include <time.h>
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#include <errno.h>
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#include <sys/time.h>
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#include <zlib.h>
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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/mman.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 <dirent.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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#include <sys/stat.h>
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#if defined(__GLIBC__)
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#include <pty.h>
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#elif defined(__FreeBSD__) || defined(__FreeBSD_kernel__) || defined(__DragonFly__)
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#include <libutil.h>
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#else
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#include <util.h>
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#endif
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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 <pty.h>
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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/stat.h>
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#include <sys/ethernet.h>
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#include <sys/sockio.h>
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#include <netinet/arp.h>
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#include <netinet/in.h>
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#include <netinet/in_systm.h>
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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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#include <net/if.h>
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#include <syslog.h>
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#include <stropts.h>
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#endif
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#endif
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#endif
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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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/***********************************************************/
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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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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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static gboolean qemu_chr_be_generic_open_bh(gpointer opaque)
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{
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CharDriverState *s = opaque;
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qemu_chr_be_event(s, CHR_EVENT_OPENED);
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s->idle_tag = 0;
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return FALSE;
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}
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void qemu_chr_be_generic_open(CharDriverState *s)
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{
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if (s->idle_tag == 0) {
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s->idle_tag = g_idle_add(qemu_chr_be_generic_open_bh, s);
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}
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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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return s->chr_write(s, buf, len);
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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 = 0;
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int res;
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while (offset < len) {
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do {
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res = s->chr_write(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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}
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} while (res == -1 && errno == EAGAIN);
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if (res == 0) {
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break;
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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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offset += res;
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}
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return offset;
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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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if (!s->chr_ioctl)
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return -ENOTSUP;
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return s->chr_ioctl(s, cmd, arg);
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}
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int qemu_chr_be_can_write(CharDriverState *s)
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{
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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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}
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void qemu_chr_be_write(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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}
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int qemu_chr_fe_get_msgfd(CharDriverState *s)
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{
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return s->get_msgfd ? s->get_msgfd(s) : -1;
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}
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int qemu_chr_add_client(CharDriverState *s, int fd)
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{
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return s->chr_add_client ? s->chr_add_client(s, fd) : -1;
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}
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void qemu_chr_accept_input(CharDriverState *s)
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{
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if (s->chr_accept_input)
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s->chr_accept_input(s);
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qemu_notify_event();
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}
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void qemu_chr_fe_printf(CharDriverState *s, const char *fmt, ...)
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{
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char buf[READ_BUF_LEN];
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va_list ap;
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va_start(ap, fmt);
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vsnprintf(buf, sizeof(buf), fmt, ap);
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qemu_chr_fe_write(s, (uint8_t *)buf, strlen(buf));
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va_end(ap);
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}
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void qemu_chr_add_handlers(CharDriverState *s,
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IOCanReadHandler *fd_can_read,
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IOReadHandler *fd_read,
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IOEventHandler *fd_event,
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void *opaque)
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{
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int fe_open;
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if (!opaque && !fd_can_read && !fd_read && !fd_event) {
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fe_open = 0;
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} else {
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fe_open = 1;
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}
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s->chr_can_read = fd_can_read;
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s->chr_read = fd_read;
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s->chr_event = fd_event;
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s->handler_opaque = opaque;
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if (s->chr_update_read_handler)
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s->chr_update_read_handler(s);
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if (!s->explicit_fe_open) {
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qemu_chr_fe_set_open(s, fe_open);
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}
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/* We're connecting to an already opened device, so let's make sure we
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also get the open event */
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if (fe_open && s->be_open) {
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qemu_chr_be_generic_open(s);
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}
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}
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static int null_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
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{
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return len;
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}
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static CharDriverState *qemu_chr_open_null(void)
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{
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CharDriverState *chr;
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chr = g_malloc0(sizeof(CharDriverState));
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chr->chr_write = null_chr_write;
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return chr;
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}
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/* MUX driver for serial I/O splitting */
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#define MAX_MUX 4
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#define MUX_BUFFER_SIZE 32 /* Must be a power of 2. */
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#define MUX_BUFFER_MASK (MUX_BUFFER_SIZE - 1)
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typedef struct {
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IOCanReadHandler *chr_can_read[MAX_MUX];
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IOReadHandler *chr_read[MAX_MUX];
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IOEventHandler *chr_event[MAX_MUX];
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void *ext_opaque[MAX_MUX];
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CharDriverState *drv;
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int focus;
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int mux_cnt;
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int term_got_escape;
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int max_size;
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/* Intermediate input buffer allows to catch escape sequences even if the
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currently active device is not accepting any input - but only until it
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is full as well. */
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unsigned char buffer[MAX_MUX][MUX_BUFFER_SIZE];
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int prod[MAX_MUX];
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int cons[MAX_MUX];
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int timestamps;
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int linestart;
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int64_t timestamps_start;
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} MuxDriver;
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static int mux_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
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{
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MuxDriver *d = chr->opaque;
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int ret;
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if (!d->timestamps) {
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ret = d->drv->chr_write(d->drv, buf, len);
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} else {
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int i;
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ret = 0;
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for (i = 0; i < len; i++) {
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if (d->linestart) {
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char buf1[64];
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int64_t ti;
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int secs;
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ti = qemu_get_clock_ms(rt_clock);
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if (d->timestamps_start == -1)
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d->timestamps_start = ti;
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ti -= d->timestamps_start;
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secs = ti / 1000;
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snprintf(buf1, sizeof(buf1),
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"[%02d:%02d:%02d.%03d] ",
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secs / 3600,
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(secs / 60) % 60,
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secs % 60,
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(int)(ti % 1000));
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d->drv->chr_write(d->drv, (uint8_t *)buf1, strlen(buf1));
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d->linestart = 0;
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}
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ret += d->drv->chr_write(d->drv, buf+i, 1);
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if (buf[i] == '\n') {
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d->linestart = 1;
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}
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}
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}
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return ret;
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}
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static const char * const mux_help[] = {
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"% h print this help\n\r",
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"% x exit emulator\n\r",
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"% s save disk data back to file (if -snapshot)\n\r",
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"% t toggle console timestamps\n\r"
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"% b send break (magic sysrq)\n\r",
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"% c switch between console and monitor\n\r",
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"% % sends %\n\r",
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NULL
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};
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int term_escape_char = 0x01; /* ctrl-a is used for escape */
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static void mux_print_help(CharDriverState *chr)
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{
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int i, j;
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char ebuf[15] = "Escape-Char";
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char cbuf[50] = "\n\r";
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if (term_escape_char > 0 && term_escape_char < 26) {
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snprintf(cbuf, sizeof(cbuf), "\n\r");
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snprintf(ebuf, sizeof(ebuf), "C-%c", term_escape_char - 1 + 'a');
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} else {
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snprintf(cbuf, sizeof(cbuf),
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"\n\rEscape-Char set to Ascii: 0x%02x\n\r\n\r",
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term_escape_char);
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}
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chr->chr_write(chr, (uint8_t *)cbuf, strlen(cbuf));
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for (i = 0; mux_help[i] != NULL; i++) {
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for (j=0; mux_help[i][j] != '\0'; j++) {
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if (mux_help[i][j] == '%')
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chr->chr_write(chr, (uint8_t *)ebuf, strlen(ebuf));
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else
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chr->chr_write(chr, (uint8_t *)&mux_help[i][j], 1);
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}
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}
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}
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static void mux_chr_send_event(MuxDriver *d, int mux_nr, int event)
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{
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if (d->chr_event[mux_nr])
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d->chr_event[mux_nr](d->ext_opaque[mux_nr], event);
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}
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static int mux_proc_byte(CharDriverState *chr, MuxDriver *d, int ch)
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{
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if (d->term_got_escape) {
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d->term_got_escape = 0;
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if (ch == term_escape_char)
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goto send_char;
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switch(ch) {
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case '?':
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case 'h':
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mux_print_help(chr);
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break;
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case 'x':
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{
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const char *term = "QEMU: Terminated\n\r";
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chr->chr_write(chr,(uint8_t *)term,strlen(term));
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exit(0);
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break;
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}
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case 's':
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bdrv_commit_all();
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break;
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case 'b':
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qemu_chr_be_event(chr, CHR_EVENT_BREAK);
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break;
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case 'c':
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/* Switch to the next registered device */
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mux_chr_send_event(d, d->focus, CHR_EVENT_MUX_OUT);
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d->focus++;
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if (d->focus >= d->mux_cnt)
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d->focus = 0;
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mux_chr_send_event(d, d->focus, CHR_EVENT_MUX_IN);
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break;
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case 't':
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d->timestamps = !d->timestamps;
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d->timestamps_start = -1;
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d->linestart = 0;
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break;
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}
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} else if (ch == term_escape_char) {
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d->term_got_escape = 1;
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} else {
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send_char:
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return 1;
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}
|
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return 0;
|
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}
|
|
|
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static void mux_chr_accept_input(CharDriverState *chr)
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{
|
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MuxDriver *d = chr->opaque;
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int m = d->focus;
|
|
|
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while (d->prod[m] != d->cons[m] &&
|
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d->chr_can_read[m] &&
|
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d->chr_can_read[m](d->ext_opaque[m])) {
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d->chr_read[m](d->ext_opaque[m],
|
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&d->buffer[m][d->cons[m]++ & MUX_BUFFER_MASK], 1);
|
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}
|
|
}
|
|
|
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static int mux_chr_can_read(void *opaque)
|
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{
|
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CharDriverState *chr = opaque;
|
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MuxDriver *d = chr->opaque;
|
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int m = d->focus;
|
|
|
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if ((d->prod[m] - d->cons[m]) < MUX_BUFFER_SIZE)
|
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return 1;
|
|
if (d->chr_can_read[m])
|
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return d->chr_can_read[m](d->ext_opaque[m]);
|
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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);
|
|
|
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for(i = 0; i < size; i++)
|
|
if (mux_proc_byte(chr, d, buf[i])) {
|
|
if (d->prod[m] == d->cons[m] &&
|
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d->chr_can_read[m] &&
|
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d->chr_can_read[m](d->ext_opaque[m]))
|
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d->chr_read[m](d->ext_opaque[m], &buf[i], 1);
|
|
else
|
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d->buffer[m][d->prod[m]++ & MUX_BUFFER_MASK] = buf[i];
|
|
}
|
|
}
|
|
|
|
static void mux_chr_event(void *opaque, int event)
|
|
{
|
|
CharDriverState *chr = opaque;
|
|
MuxDriver *d = chr->opaque;
|
|
int i;
|
|
|
|
/* Send the event to all registered listeners */
|
|
for (i = 0; i < d->mux_cnt; i++)
|
|
mux_chr_send_event(d, i, event);
|
|
}
|
|
|
|
static void mux_chr_update_read_handler(CharDriverState *chr)
|
|
{
|
|
MuxDriver *d = chr->opaque;
|
|
|
|
if (d->mux_cnt >= MAX_MUX) {
|
|
fprintf(stderr, "Cannot add I/O handlers, MUX array is full\n");
|
|
return;
|
|
}
|
|
d->ext_opaque[d->mux_cnt] = chr->handler_opaque;
|
|
d->chr_can_read[d->mux_cnt] = chr->chr_can_read;
|
|
d->chr_read[d->mux_cnt] = chr->chr_read;
|
|
d->chr_event[d->mux_cnt] = chr->chr_event;
|
|
/* Fix up the real driver with mux routines */
|
|
if (d->mux_cnt == 0) {
|
|
qemu_chr_add_handlers(d->drv, mux_chr_can_read, mux_chr_read,
|
|
mux_chr_event, chr);
|
|
}
|
|
if (d->focus != -1) {
|
|
mux_chr_send_event(d, d->focus, CHR_EVENT_MUX_OUT);
|
|
}
|
|
d->focus = d->mux_cnt;
|
|
d->mux_cnt++;
|
|
mux_chr_send_event(d, d->focus, CHR_EVENT_MUX_IN);
|
|
}
|
|
|
|
static CharDriverState *qemu_chr_open_mux(CharDriverState *drv)
|
|
{
|
|
CharDriverState *chr;
|
|
MuxDriver *d;
|
|
|
|
chr = g_malloc0(sizeof(CharDriverState));
|
|
d = g_malloc0(sizeof(MuxDriver));
|
|
|
|
chr->opaque = d;
|
|
d->drv = drv;
|
|
d->focus = -1;
|
|
chr->chr_write = mux_chr_write;
|
|
chr->chr_update_read_handler = mux_chr_update_read_handler;
|
|
chr->chr_accept_input = mux_chr_accept_input;
|
|
/* Frontend guest-open / -close notification is not support with muxes */
|
|
chr->chr_set_fe_open = NULL;
|
|
|
|
/* Muxes are always open on creation */
|
|
qemu_chr_be_generic_open(chr);
|
|
|
|
return chr;
|
|
}
|
|
|
|
|
|
#ifdef _WIN32
|
|
int send_all(int fd, const void *buf, int len1)
|
|
{
|
|
int ret, len;
|
|
|
|
len = len1;
|
|
while (len > 0) {
|
|
ret = send(fd, buf, len, 0);
|
|
if (ret < 0) {
|
|
errno = WSAGetLastError();
|
|
if (errno != WSAEWOULDBLOCK) {
|
|
return -1;
|
|
}
|
|
} else if (ret == 0) {
|
|
break;
|
|
} else {
|
|
buf += ret;
|
|
len -= ret;
|
|
}
|
|
}
|
|
return len1 - len;
|
|
}
|
|
|
|
#else
|
|
|
|
int send_all(int fd, const void *_buf, int len1)
|
|
{
|
|
int ret, len;
|
|
const uint8_t *buf = _buf;
|
|
|
|
len = len1;
|
|
while (len > 0) {
|
|
ret = write(fd, buf, len);
|
|
if (ret < 0) {
|
|
if (errno != EINTR && errno != EAGAIN)
|
|
return -1;
|
|
} else if (ret == 0) {
|
|
break;
|
|
} else {
|
|
buf += ret;
|
|
len -= ret;
|
|
}
|
|
}
|
|
return len1 - len;
|
|
}
|
|
|
|
int recv_all(int fd, void *_buf, int len1, bool single_read)
|
|
{
|
|
int ret, len;
|
|
uint8_t *buf = _buf;
|
|
|
|
len = len1;
|
|
while ((len > 0) && (ret = read(fd, buf, len)) != 0) {
|
|
if (ret < 0) {
|
|
if (errno != EINTR && errno != EAGAIN) {
|
|
return -1;
|
|
}
|
|
continue;
|
|
} else {
|
|
if (single_read) {
|
|
return ret;
|
|
}
|
|
buf += ret;
|
|
len -= ret;
|
|
}
|
|
}
|
|
return len1 - len;
|
|
}
|
|
|
|
#endif /* !_WIN32 */
|
|
|
|
typedef struct IOWatchPoll
|
|
{
|
|
GSource *src;
|
|
int max_size;
|
|
|
|
IOCanReadHandler *fd_can_read;
|
|
void *opaque;
|
|
|
|
QTAILQ_ENTRY(IOWatchPoll) node;
|
|
} IOWatchPoll;
|
|
|
|
static QTAILQ_HEAD(, IOWatchPoll) io_watch_poll_list =
|
|
QTAILQ_HEAD_INITIALIZER(io_watch_poll_list);
|
|
|
|
static IOWatchPoll *io_watch_poll_from_source(GSource *source)
|
|
{
|
|
IOWatchPoll *i;
|
|
|
|
QTAILQ_FOREACH(i, &io_watch_poll_list, node) {
|
|
if (i->src == source) {
|
|
return i;
|
|
}
|
|
}
|
|
|
|
return NULL;
|
|
}
|
|
|
|
static gboolean io_watch_poll_prepare(GSource *source, gint *timeout_)
|
|
{
|
|
IOWatchPoll *iwp = io_watch_poll_from_source(source);
|
|
|
|
iwp->max_size = iwp->fd_can_read(iwp->opaque);
|
|
if (iwp->max_size == 0) {
|
|
return FALSE;
|
|
}
|
|
|
|
return g_io_watch_funcs.prepare(source, timeout_);
|
|
}
|
|
|
|
static gboolean io_watch_poll_check(GSource *source)
|
|
{
|
|
IOWatchPoll *iwp = io_watch_poll_from_source(source);
|
|
|
|
if (iwp->max_size == 0) {
|
|
return FALSE;
|
|
}
|
|
|
|
return g_io_watch_funcs.check(source);
|
|
}
|
|
|
|
static gboolean io_watch_poll_dispatch(GSource *source, GSourceFunc callback,
|
|
gpointer user_data)
|
|
{
|
|
return g_io_watch_funcs.dispatch(source, callback, user_data);
|
|
}
|
|
|
|
static void io_watch_poll_finalize(GSource *source)
|
|
{
|
|
IOWatchPoll *iwp = io_watch_poll_from_source(source);
|
|
QTAILQ_REMOVE(&io_watch_poll_list, iwp, node);
|
|
g_io_watch_funcs.finalize(source);
|
|
}
|
|
|
|
static GSourceFuncs io_watch_poll_funcs = {
|
|
.prepare = io_watch_poll_prepare,
|
|
.check = io_watch_poll_check,
|
|
.dispatch = io_watch_poll_dispatch,
|
|
.finalize = io_watch_poll_finalize,
|
|
};
|
|
|
|
/* Can only be used for read */
|
|
static guint io_add_watch_poll(GIOChannel *channel,
|
|
IOCanReadHandler *fd_can_read,
|
|
GIOFunc fd_read,
|
|
gpointer user_data)
|
|
{
|
|
IOWatchPoll *iwp;
|
|
GSource *src;
|
|
guint tag;
|
|
|
|
src = g_io_create_watch(channel, G_IO_IN | G_IO_ERR | G_IO_HUP);
|
|
g_source_set_funcs(src, &io_watch_poll_funcs);
|
|
g_source_set_callback(src, (GSourceFunc)fd_read, user_data, NULL);
|
|
tag = g_source_attach(src, NULL);
|
|
g_source_unref(src);
|
|
|
|
iwp = g_malloc0(sizeof(*iwp));
|
|
iwp->src = src;
|
|
iwp->max_size = 0;
|
|
iwp->fd_can_read = fd_can_read;
|
|
iwp->opaque = user_data;
|
|
|
|
QTAILQ_INSERT_HEAD(&io_watch_poll_list, iwp, node);
|
|
|
|
return tag;
|
|
}
|
|
|
|
#ifndef _WIN32
|
|
static GIOChannel *io_channel_from_fd(int fd)
|
|
{
|
|
GIOChannel *chan;
|
|
|
|
if (fd == -1) {
|
|
return NULL;
|
|
}
|
|
|
|
chan = g_io_channel_unix_new(fd);
|
|
|
|
g_io_channel_set_encoding(chan, NULL, NULL);
|
|
g_io_channel_set_buffered(chan, FALSE);
|
|
|
|
return chan;
|
|
}
|
|
#endif
|
|
|
|
static GIOChannel *io_channel_from_socket(int fd)
|
|
{
|
|
GIOChannel *chan;
|
|
|
|
if (fd == -1) {
|
|
return NULL;
|
|
}
|
|
|
|
#ifdef _WIN32
|
|
chan = g_io_channel_win32_new_socket(fd);
|
|
#else
|
|
chan = g_io_channel_unix_new(fd);
|
|
#endif
|
|
|
|
g_io_channel_set_encoding(chan, NULL, NULL);
|
|
g_io_channel_set_buffered(chan, FALSE);
|
|
|
|
return chan;
|
|
}
|
|
|
|
static int io_channel_send(GIOChannel *fd, const void *buf, size_t len)
|
|
{
|
|
GIOStatus status;
|
|
size_t offset;
|
|
|
|
offset = 0;
|
|
while (offset < len) {
|
|
gsize bytes_written;
|
|
|
|
status = g_io_channel_write_chars(fd, buf + offset, len - offset,
|
|
&bytes_written, NULL);
|
|
if (status != G_IO_STATUS_NORMAL) {
|
|
if (status == G_IO_STATUS_AGAIN) {
|
|
/* If we've written any data, return a partial write. */
|
|
if (offset) {
|
|
break;
|
|
}
|
|
errno = EAGAIN;
|
|
} else {
|
|
errno = EINVAL;
|
|
}
|
|
|
|
return -1;
|
|
} else if (status == G_IO_STATUS_EOF) {
|
|
break;
|
|
}
|
|
|
|
offset += bytes_written;
|
|
}
|
|
|
|
return offset;
|
|
}
|
|
|
|
#ifndef _WIN32
|
|
|
|
typedef struct FDCharDriver {
|
|
CharDriverState *chr;
|
|
GIOChannel *fd_in, *fd_out;
|
|
guint fd_in_tag;
|
|
int max_size;
|
|
QTAILQ_ENTRY(FDCharDriver) node;
|
|
} FDCharDriver;
|
|
|
|
static int fd_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
|
|
{
|
|
FDCharDriver *s = chr->opaque;
|
|
|
|
return io_channel_send(s->fd_out, buf, len);
|
|
}
|
|
|
|
static gboolean fd_chr_read(GIOChannel *chan, GIOCondition cond, void *opaque)
|
|
{
|
|
CharDriverState *chr = opaque;
|
|
FDCharDriver *s = chr->opaque;
|
|
int len;
|
|
uint8_t buf[READ_BUF_LEN];
|
|
GIOStatus status;
|
|
gsize bytes_read;
|
|
|
|
len = sizeof(buf);
|
|
if (len > s->max_size) {
|
|
len = s->max_size;
|
|
}
|
|
if (len == 0) {
|
|
return FALSE;
|
|
}
|
|
|
|
status = g_io_channel_read_chars(chan, (gchar *)buf,
|
|
len, &bytes_read, NULL);
|
|
if (status == G_IO_STATUS_EOF) {
|
|
qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
|
|
return FALSE;
|
|
}
|
|
if (status == G_IO_STATUS_NORMAL) {
|
|
qemu_chr_be_write(chr, buf, bytes_read);
|
|
}
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
static int fd_chr_read_poll(void *opaque)
|
|
{
|
|
CharDriverState *chr = opaque;
|
|
FDCharDriver *s = chr->opaque;
|
|
|
|
s->max_size = qemu_chr_be_can_write(chr);
|
|
return s->max_size;
|
|
}
|
|
|
|
static GSource *fd_chr_add_watch(CharDriverState *chr, GIOCondition cond)
|
|
{
|
|
FDCharDriver *s = chr->opaque;
|
|
return g_io_create_watch(s->fd_out, cond);
|
|
}
|
|
|
|
static void fd_chr_update_read_handler(CharDriverState *chr)
|
|
{
|
|
FDCharDriver *s = chr->opaque;
|
|
|
|
if (s->fd_in_tag) {
|
|
g_source_remove(s->fd_in_tag);
|
|
}
|
|
|
|
if (s->fd_in) {
|
|
s->fd_in_tag = io_add_watch_poll(s->fd_in, fd_chr_read_poll, fd_chr_read, chr);
|
|
}
|
|
}
|
|
|
|
static void fd_chr_close(struct CharDriverState *chr)
|
|
{
|
|
FDCharDriver *s = chr->opaque;
|
|
|
|
if (s->fd_in_tag) {
|
|
g_source_remove(s->fd_in_tag);
|
|
s->fd_in_tag = 0;
|
|
}
|
|
|
|
if (s->fd_in) {
|
|
g_io_channel_unref(s->fd_in);
|
|
}
|
|
if (s->fd_out) {
|
|
g_io_channel_unref(s->fd_out);
|
|
}
|
|
|
|
g_free(s);
|
|
qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
|
|
}
|
|
|
|
/* open a character device to a unix fd */
|
|
static CharDriverState *qemu_chr_open_fd(int fd_in, int fd_out)
|
|
{
|
|
CharDriverState *chr;
|
|
FDCharDriver *s;
|
|
|
|
chr = g_malloc0(sizeof(CharDriverState));
|
|
s = g_malloc0(sizeof(FDCharDriver));
|
|
s->fd_in = io_channel_from_fd(fd_in);
|
|
s->fd_out = io_channel_from_fd(fd_out);
|
|
fcntl(fd_out, F_SETFL, O_NONBLOCK);
|
|
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;
|
|
|
|
qemu_chr_be_generic_open(chr);
|
|
|
|
return chr;
|
|
}
|
|
|
|
static CharDriverState *qemu_chr_open_pipe(ChardevHostdev *opts)
|
|
{
|
|
int fd_in, fd_out;
|
|
char filename_in[256], filename_out[256];
|
|
const char *filename = opts->device;
|
|
|
|
if (filename == NULL) {
|
|
fprintf(stderr, "chardev: pipe: no filename given\n");
|
|
return NULL;
|
|
}
|
|
|
|
snprintf(filename_in, 256, "%s.in", filename);
|
|
snprintf(filename_out, 256, "%s.out", filename);
|
|
TFR(fd_in = qemu_open(filename_in, O_RDWR | O_BINARY));
|
|
TFR(fd_out = qemu_open(filename_out, O_RDWR | O_BINARY));
|
|
if (fd_in < 0 || fd_out < 0) {
|
|
if (fd_in >= 0)
|
|
close(fd_in);
|
|
if (fd_out >= 0)
|
|
close(fd_out);
|
|
TFR(fd_in = fd_out = qemu_open(filename, O_RDWR | O_BINARY));
|
|
if (fd_in < 0) {
|
|
return NULL;
|
|
}
|
|
}
|
|
return qemu_chr_open_fd(fd_in, fd_out);
|
|
}
|
|
|
|
/* init terminal so that we can grab keys */
|
|
static struct termios oldtty;
|
|
static int old_fd0_flags;
|
|
static bool stdio_allow_signal;
|
|
|
|
static void term_exit(void)
|
|
{
|
|
tcsetattr (0, TCSANOW, &oldtty);
|
|
fcntl(0, F_SETFL, old_fd0_flags);
|
|
}
|
|
|
|
static void qemu_chr_set_echo_stdio(CharDriverState *chr, bool echo)
|
|
{
|
|
struct termios tty;
|
|
|
|
tty = oldtty;
|
|
if (!echo) {
|
|
tty.c_iflag &= ~(IGNBRK|BRKINT|PARMRK|ISTRIP
|
|
|INLCR|IGNCR|ICRNL|IXON);
|
|
tty.c_oflag |= OPOST;
|
|
tty.c_lflag &= ~(ECHO|ECHONL|ICANON|IEXTEN);
|
|
tty.c_cflag &= ~(CSIZE|PARENB);
|
|
tty.c_cflag |= CS8;
|
|
tty.c_cc[VMIN] = 1;
|
|
tty.c_cc[VTIME] = 0;
|
|
}
|
|
/* if graphical mode, we allow Ctrl-C handling */
|
|
if (!stdio_allow_signal)
|
|
tty.c_lflag &= ~ISIG;
|
|
|
|
tcsetattr (0, TCSANOW, &tty);
|
|
}
|
|
|
|
static void qemu_chr_close_stdio(struct CharDriverState *chr)
|
|
{
|
|
term_exit();
|
|
fd_chr_close(chr);
|
|
}
|
|
|
|
static CharDriverState *qemu_chr_open_stdio(ChardevStdio *opts)
|
|
{
|
|
CharDriverState *chr;
|
|
|
|
if (is_daemonized()) {
|
|
error_report("cannot use stdio with -daemonize");
|
|
return NULL;
|
|
}
|
|
old_fd0_flags = fcntl(0, F_GETFL);
|
|
tcgetattr (0, &oldtty);
|
|
fcntl(0, F_SETFL, O_NONBLOCK);
|
|
atexit(term_exit);
|
|
|
|
chr = qemu_chr_open_fd(0, 1);
|
|
chr->chr_close = qemu_chr_close_stdio;
|
|
chr->chr_set_echo = qemu_chr_set_echo_stdio;
|
|
stdio_allow_signal = display_type != DT_NOGRAPHIC;
|
|
if (opts->has_signal) {
|
|
stdio_allow_signal = opts->signal;
|
|
}
|
|
qemu_chr_fe_set_echo(chr, false);
|
|
|
|
return chr;
|
|
}
|
|
|
|
#ifdef __sun__
|
|
/* Once Solaris has openpty(), this is going to be removed. */
|
|
static int openpty(int *amaster, int *aslave, char *name,
|
|
struct termios *termp, struct winsize *winp)
|
|
{
|
|
const char *slave;
|
|
int mfd = -1, sfd = -1;
|
|
|
|
*amaster = *aslave = -1;
|
|
|
|
mfd = open("/dev/ptmx", O_RDWR | O_NOCTTY);
|
|
if (mfd < 0)
|
|
goto err;
|
|
|
|
if (grantpt(mfd) == -1 || unlockpt(mfd) == -1)
|
|
goto err;
|
|
|
|
if ((slave = ptsname(mfd)) == NULL)
|
|
goto err;
|
|
|
|
if ((sfd = open(slave, O_RDONLY | O_NOCTTY)) == -1)
|
|
goto err;
|
|
|
|
if (ioctl(sfd, I_PUSH, "ptem") == -1 ||
|
|
(termp != NULL && tcgetattr(sfd, termp) < 0))
|
|
goto err;
|
|
|
|
if (amaster)
|
|
*amaster = mfd;
|
|
if (aslave)
|
|
*aslave = sfd;
|
|
if (winp)
|
|
ioctl(sfd, TIOCSWINSZ, winp);
|
|
|
|
return 0;
|
|
|
|
err:
|
|
if (sfd != -1)
|
|
close(sfd);
|
|
close(mfd);
|
|
return -1;
|
|
}
|
|
|
|
static void cfmakeraw (struct termios *termios_p)
|
|
{
|
|
termios_p->c_iflag &=
|
|
~(IGNBRK|BRKINT|PARMRK|ISTRIP|INLCR|IGNCR|ICRNL|IXON);
|
|
termios_p->c_oflag &= ~OPOST;
|
|
termios_p->c_lflag &= ~(ECHO|ECHONL|ICANON|ISIG|IEXTEN);
|
|
termios_p->c_cflag &= ~(CSIZE|PARENB);
|
|
termios_p->c_cflag |= CS8;
|
|
|
|
termios_p->c_cc[VMIN] = 0;
|
|
termios_p->c_cc[VTIME] = 0;
|
|
}
|
|
#endif
|
|
|
|
#if defined(__linux__) || defined(__sun__) || defined(__FreeBSD__) \
|
|
|| defined(__NetBSD__) || defined(__OpenBSD__) || defined(__DragonFly__) \
|
|
|| defined(__GLIBC__)
|
|
|
|
#define HAVE_CHARDEV_TTY 1
|
|
|
|
typedef struct {
|
|
GIOChannel *fd;
|
|
guint fd_tag;
|
|
int connected;
|
|
int polling;
|
|
int read_bytes;
|
|
guint timer_tag;
|
|
} PtyCharDriver;
|
|
|
|
static void pty_chr_update_read_handler(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;
|
|
|
|
if (s->connected) {
|
|
goto out;
|
|
}
|
|
if (s->polling) {
|
|
/* If we arrive here without polling being cleared due
|
|
* read returning -EIO, then we are (re-)connected */
|
|
pty_chr_state(chr, 1);
|
|
goto out;
|
|
}
|
|
|
|
/* Next poll ... */
|
|
pty_chr_update_read_handler(chr);
|
|
|
|
out:
|
|
return FALSE;
|
|
}
|
|
|
|
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);
|
|
}
|
|
}
|
|
|
|
static int pty_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
|
|
{
|
|
PtyCharDriver *s = chr->opaque;
|
|
|
|
if (!s->connected) {
|
|
/* guest sends data, check for (re-)connect */
|
|
pty_chr_update_read_handler(chr);
|
|
return 0;
|
|
}
|
|
return io_channel_send(s->fd, buf, len);
|
|
}
|
|
|
|
static GSource *pty_chr_add_watch(CharDriverState *chr, GIOCondition cond)
|
|
{
|
|
PtyCharDriver *s = chr->opaque;
|
|
return g_io_create_watch(s->fd, cond);
|
|
}
|
|
|
|
static int pty_chr_read_poll(void *opaque)
|
|
{
|
|
CharDriverState *chr = opaque;
|
|
PtyCharDriver *s = chr->opaque;
|
|
|
|
s->read_bytes = qemu_chr_be_can_write(chr);
|
|
return s->read_bytes;
|
|
}
|
|
|
|
static gboolean pty_chr_read(GIOChannel *chan, GIOCondition cond, void *opaque)
|
|
{
|
|
CharDriverState *chr = opaque;
|
|
PtyCharDriver *s = chr->opaque;
|
|
gsize size, len;
|
|
uint8_t buf[READ_BUF_LEN];
|
|
GIOStatus status;
|
|
|
|
len = sizeof(buf);
|
|
if (len > s->read_bytes)
|
|
len = s->read_bytes;
|
|
if (len == 0)
|
|
return FALSE;
|
|
status = g_io_channel_read_chars(s->fd, (gchar *)buf, len, &size, NULL);
|
|
if (status != G_IO_STATUS_NORMAL) {
|
|
pty_chr_state(chr, 0);
|
|
return FALSE;
|
|
} else {
|
|
pty_chr_state(chr, 1);
|
|
qemu_chr_be_write(chr, buf, size);
|
|
}
|
|
return TRUE;
|
|
}
|
|
|
|
static void pty_chr_update_read_handler(CharDriverState *chr)
|
|
{
|
|
PtyCharDriver *s = chr->opaque;
|
|
|
|
if (s->fd_tag) {
|
|
g_source_remove(s->fd_tag);
|
|
}
|
|
|
|
s->fd_tag = io_add_watch_poll(s->fd, pty_chr_read_poll, pty_chr_read, chr);
|
|
s->polling = 1;
|
|
/*
|
|
* Short timeout here: just need wait long enougth that qemu makes
|
|
* it through the poll loop once. When reconnected we want a
|
|
* short timeout so we notice it almost instantly. Otherwise
|
|
* read() gives us -EIO instantly, making pty_chr_state() reset the
|
|
* timeout to the normal (much longer) poll interval before the
|
|
* timer triggers.
|
|
*/
|
|
pty_chr_rearm_timer(chr, 10);
|
|
}
|
|
|
|
static void pty_chr_state(CharDriverState *chr, int connected)
|
|
{
|
|
PtyCharDriver *s = chr->opaque;
|
|
|
|
if (!connected) {
|
|
g_source_remove(s->fd_tag);
|
|
s->fd_tag = 0;
|
|
s->connected = 0;
|
|
s->polling = 0;
|
|
/* (re-)connect poll interval for idle guests: once per second.
|
|
* We check more frequently in case the guests sends data to
|
|
* the virtual device linked to our pty. */
|
|
pty_chr_rearm_timer(chr, 1000);
|
|
} else {
|
|
if (!s->connected)
|
|
qemu_chr_be_generic_open(chr);
|
|
s->connected = 1;
|
|
}
|
|
}
|
|
|
|
|
|
static void pty_chr_close(struct CharDriverState *chr)
|
|
{
|
|
PtyCharDriver *s = chr->opaque;
|
|
int fd;
|
|
|
|
if (s->fd_tag) {
|
|
g_source_remove(s->fd_tag);
|
|
}
|
|
fd = g_io_channel_unix_get_fd(s->fd);
|
|
g_io_channel_unref(s->fd);
|
|
close(fd);
|
|
if (s->timer_tag) {
|
|
g_source_remove(s->timer_tag);
|
|
}
|
|
g_free(s);
|
|
qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
|
|
}
|
|
|
|
static CharDriverState *qemu_chr_open_pty(const char *id,
|
|
ChardevReturn *ret)
|
|
{
|
|
CharDriverState *chr;
|
|
PtyCharDriver *s;
|
|
struct termios tty;
|
|
int master_fd, slave_fd;
|
|
#if defined(__OpenBSD__) || defined(__DragonFly__)
|
|
char pty_name[PATH_MAX];
|
|
#define q_ptsname(x) pty_name
|
|
#else
|
|
char *pty_name = NULL;
|
|
#define q_ptsname(x) ptsname(x)
|
|
#endif
|
|
|
|
if (openpty(&master_fd, &slave_fd, pty_name, NULL, NULL) < 0) {
|
|
return NULL;
|
|
}
|
|
|
|
/* Set raw attributes on the pty. */
|
|
tcgetattr(slave_fd, &tty);
|
|
cfmakeraw(&tty);
|
|
tcsetattr(slave_fd, TCSAFLUSH, &tty);
|
|
close(slave_fd);
|
|
|
|
chr = g_malloc0(sizeof(CharDriverState));
|
|
|
|
chr->filename = g_strdup_printf("pty:%s", q_ptsname(master_fd));
|
|
ret->pty = g_strdup(q_ptsname(master_fd));
|
|
ret->has_pty = true;
|
|
|
|
fprintf(stderr, "char device redirected to %s (label %s)\n",
|
|
q_ptsname(master_fd), id);
|
|
|
|
s = g_malloc0(sizeof(PtyCharDriver));
|
|
chr->opaque = s;
|
|
chr->chr_write = pty_chr_write;
|
|
chr->chr_update_read_handler = pty_chr_update_read_handler;
|
|
chr->chr_close = pty_chr_close;
|
|
chr->chr_add_watch = pty_chr_add_watch;
|
|
|
|
s->fd = io_channel_from_fd(master_fd);
|
|
s->timer_tag = 0;
|
|
|
|
return chr;
|
|
}
|
|
|
|
static void tty_serial_init(int fd, int speed,
|
|
int parity, int data_bits, int stop_bits)
|
|
{
|
|
struct termios tty;
|
|
speed_t spd;
|
|
|
|
#if 0
|
|
printf("tty_serial_init: speed=%d parity=%c data=%d stop=%d\n",
|
|
speed, parity, data_bits, stop_bits);
|
|
#endif
|
|
tcgetattr (fd, &tty);
|
|
|
|
#define check_speed(val) if (speed <= val) { spd = B##val; break; }
|
|
speed = speed * 10 / 11;
|
|
do {
|
|
check_speed(50);
|
|
check_speed(75);
|
|
check_speed(110);
|
|
check_speed(134);
|
|
check_speed(150);
|
|
check_speed(200);
|
|
check_speed(300);
|
|
check_speed(600);
|
|
check_speed(1200);
|
|
check_speed(1800);
|
|
check_speed(2400);
|
|
check_speed(4800);
|
|
check_speed(9600);
|
|
check_speed(19200);
|
|
check_speed(38400);
|
|
/* Non-Posix values follow. They may be unsupported on some systems. */
|
|
check_speed(57600);
|
|
check_speed(115200);
|
|
#ifdef B230400
|
|
check_speed(230400);
|
|
#endif
|
|
#ifdef B460800
|
|
check_speed(460800);
|
|
#endif
|
|
#ifdef B500000
|
|
check_speed(500000);
|
|
#endif
|
|
#ifdef B576000
|
|
check_speed(576000);
|
|
#endif
|
|
#ifdef B921600
|
|
check_speed(921600);
|
|
#endif
|
|
#ifdef B1000000
|
|
check_speed(1000000);
|
|
#endif
|
|
#ifdef B1152000
|
|
check_speed(1152000);
|
|
#endif
|
|
#ifdef B1500000
|
|
check_speed(1500000);
|
|
#endif
|
|
#ifdef B2000000
|
|
check_speed(2000000);
|
|
#endif
|
|
#ifdef B2500000
|
|
check_speed(2500000);
|
|
#endif
|
|
#ifdef B3000000
|
|
check_speed(3000000);
|
|
#endif
|
|
#ifdef B3500000
|
|
check_speed(3500000);
|
|
#endif
|
|
#ifdef B4000000
|
|
check_speed(4000000);
|
|
#endif
|
|
spd = B115200;
|
|
} while (0);
|
|
|
|
cfsetispeed(&tty, spd);
|
|
cfsetospeed(&tty, spd);
|
|
|
|
tty.c_iflag &= ~(IGNBRK|BRKINT|PARMRK|ISTRIP
|
|
|INLCR|IGNCR|ICRNL|IXON);
|
|
tty.c_oflag |= OPOST;
|
|
tty.c_lflag &= ~(ECHO|ECHONL|ICANON|IEXTEN|ISIG);
|
|
tty.c_cflag &= ~(CSIZE|PARENB|PARODD|CRTSCTS|CSTOPB);
|
|
switch(data_bits) {
|
|
default:
|
|
case 8:
|
|
tty.c_cflag |= CS8;
|
|
break;
|
|
case 7:
|
|
tty.c_cflag |= CS7;
|
|
break;
|
|
case 6:
|
|
tty.c_cflag |= CS6;
|
|
break;
|
|
case 5:
|
|
tty.c_cflag |= CS5;
|
|
break;
|
|
}
|
|
switch(parity) {
|
|
default:
|
|
case 'N':
|
|
break;
|
|
case 'E':
|
|
tty.c_cflag |= PARENB;
|
|
break;
|
|
case 'O':
|
|
tty.c_cflag |= PARENB | PARODD;
|
|
break;
|
|
}
|
|
if (stop_bits == 2)
|
|
tty.c_cflag |= CSTOPB;
|
|
|
|
tcsetattr (fd, TCSANOW, &tty);
|
|
}
|
|
|
|
static int tty_serial_ioctl(CharDriverState *chr, int cmd, void *arg)
|
|
{
|
|
FDCharDriver *s = chr->opaque;
|
|
|
|
switch(cmd) {
|
|
case CHR_IOCTL_SERIAL_SET_PARAMS:
|
|
{
|
|
QEMUSerialSetParams *ssp = arg;
|
|
tty_serial_init(g_io_channel_unix_get_fd(s->fd_in),
|
|
ssp->speed, ssp->parity,
|
|
ssp->data_bits, ssp->stop_bits);
|
|
}
|
|
break;
|
|
case CHR_IOCTL_SERIAL_SET_BREAK:
|
|
{
|
|
int enable = *(int *)arg;
|
|
if (enable) {
|
|
tcsendbreak(g_io_channel_unix_get_fd(s->fd_in), 1);
|
|
}
|
|
}
|
|
break;
|
|
case CHR_IOCTL_SERIAL_GET_TIOCM:
|
|
{
|
|
int sarg = 0;
|
|
int *targ = (int *)arg;
|
|
ioctl(g_io_channel_unix_get_fd(s->fd_in), TIOCMGET, &sarg);
|
|
*targ = 0;
|
|
if (sarg & TIOCM_CTS)
|
|
*targ |= CHR_TIOCM_CTS;
|
|
if (sarg & TIOCM_CAR)
|
|
*targ |= CHR_TIOCM_CAR;
|
|
if (sarg & TIOCM_DSR)
|
|
*targ |= CHR_TIOCM_DSR;
|
|
if (sarg & TIOCM_RI)
|
|
*targ |= CHR_TIOCM_RI;
|
|
if (sarg & TIOCM_DTR)
|
|
*targ |= CHR_TIOCM_DTR;
|
|
if (sarg & TIOCM_RTS)
|
|
*targ |= CHR_TIOCM_RTS;
|
|
}
|
|
break;
|
|
case CHR_IOCTL_SERIAL_SET_TIOCM:
|
|
{
|
|
int sarg = *(int *)arg;
|
|
int targ = 0;
|
|
ioctl(g_io_channel_unix_get_fd(s->fd_in), TIOCMGET, &targ);
|
|
targ &= ~(CHR_TIOCM_CTS | CHR_TIOCM_CAR | CHR_TIOCM_DSR
|
|
| CHR_TIOCM_RI | CHR_TIOCM_DTR | CHR_TIOCM_RTS);
|
|
if (sarg & CHR_TIOCM_CTS)
|
|
targ |= TIOCM_CTS;
|
|
if (sarg & CHR_TIOCM_CAR)
|
|
targ |= TIOCM_CAR;
|
|
if (sarg & CHR_TIOCM_DSR)
|
|
targ |= TIOCM_DSR;
|
|
if (sarg & CHR_TIOCM_RI)
|
|
targ |= TIOCM_RI;
|
|
if (sarg & CHR_TIOCM_DTR)
|
|
targ |= TIOCM_DTR;
|
|
if (sarg & CHR_TIOCM_RTS)
|
|
targ |= TIOCM_RTS;
|
|
ioctl(g_io_channel_unix_get_fd(s->fd_in), TIOCMSET, &targ);
|
|
}
|
|
break;
|
|
default:
|
|
return -ENOTSUP;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static void qemu_chr_close_tty(CharDriverState *chr)
|
|
{
|
|
FDCharDriver *s = chr->opaque;
|
|
int fd = -1;
|
|
|
|
if (s) {
|
|
fd = g_io_channel_unix_get_fd(s->fd_in);
|
|
}
|
|
|
|
fd_chr_close(chr);
|
|
|
|
if (fd >= 0) {
|
|
close(fd);
|
|
}
|
|
}
|
|
|
|
static CharDriverState *qemu_chr_open_tty_fd(int fd)
|
|
{
|
|
CharDriverState *chr;
|
|
|
|
tty_serial_init(fd, 115200, 'N', 8, 1);
|
|
chr = qemu_chr_open_fd(fd, fd);
|
|
chr->chr_ioctl = tty_serial_ioctl;
|
|
chr->chr_close = qemu_chr_close_tty;
|
|
return chr;
|
|
}
|
|
#endif /* __linux__ || __sun__ */
|
|
|
|
#if defined(__linux__)
|
|
|
|
#define HAVE_CHARDEV_PARPORT 1
|
|
|
|
typedef struct {
|
|
int fd;
|
|
int mode;
|
|
} ParallelCharDriver;
|
|
|
|
static int pp_hw_mode(ParallelCharDriver *s, uint16_t mode)
|
|
{
|
|
if (s->mode != mode) {
|
|
int m = mode;
|
|
if (ioctl(s->fd, PPSETMODE, &m) < 0)
|
|
return 0;
|
|
s->mode = mode;
|
|
}
|
|
return 1;
|
|
}
|
|
|
|
static int pp_ioctl(CharDriverState *chr, int cmd, void *arg)
|
|
{
|
|
ParallelCharDriver *drv = chr->opaque;
|
|
int fd = drv->fd;
|
|
uint8_t b;
|
|
|
|
switch(cmd) {
|
|
case CHR_IOCTL_PP_READ_DATA:
|
|
if (ioctl(fd, PPRDATA, &b) < 0)
|
|
return -ENOTSUP;
|
|
*(uint8_t *)arg = b;
|
|
break;
|
|
case CHR_IOCTL_PP_WRITE_DATA:
|
|
b = *(uint8_t *)arg;
|
|
if (ioctl(fd, PPWDATA, &b) < 0)
|
|
return -ENOTSUP;
|
|
break;
|
|
case CHR_IOCTL_PP_READ_CONTROL:
|
|
if (ioctl(fd, PPRCONTROL, &b) < 0)
|
|
return -ENOTSUP;
|
|
/* Linux gives only the lowest bits, and no way to know data
|
|
direction! For better compatibility set the fixed upper
|
|
bits. */
|
|
*(uint8_t *)arg = b | 0xc0;
|
|
break;
|
|
case CHR_IOCTL_PP_WRITE_CONTROL:
|
|
b = *(uint8_t *)arg;
|
|
if (ioctl(fd, PPWCONTROL, &b) < 0)
|
|
return -ENOTSUP;
|
|
break;
|
|
case CHR_IOCTL_PP_READ_STATUS:
|
|
if (ioctl(fd, PPRSTATUS, &b) < 0)
|
|
return -ENOTSUP;
|
|
*(uint8_t *)arg = b;
|
|
break;
|
|
case CHR_IOCTL_PP_DATA_DIR:
|
|
if (ioctl(fd, PPDATADIR, (int *)arg) < 0)
|
|
return -ENOTSUP;
|
|
break;
|
|
case CHR_IOCTL_PP_EPP_READ_ADDR:
|
|
if (pp_hw_mode(drv, IEEE1284_MODE_EPP|IEEE1284_ADDR)) {
|
|
struct ParallelIOArg *parg = arg;
|
|
int n = read(fd, parg->buffer, parg->count);
|
|
if (n != parg->count) {
|
|
return -EIO;
|
|
}
|
|
}
|
|
break;
|
|
case CHR_IOCTL_PP_EPP_READ:
|
|
if (pp_hw_mode(drv, IEEE1284_MODE_EPP)) {
|
|
struct ParallelIOArg *parg = arg;
|
|
int n = read(fd, parg->buffer, parg->count);
|
|
if (n != parg->count) {
|
|
return -EIO;
|
|
}
|
|
}
|
|
break;
|
|
case CHR_IOCTL_PP_EPP_WRITE_ADDR:
|
|
if (pp_hw_mode(drv, IEEE1284_MODE_EPP|IEEE1284_ADDR)) {
|
|
struct ParallelIOArg *parg = arg;
|
|
int n = write(fd, parg->buffer, parg->count);
|
|
if (n != parg->count) {
|
|
return -EIO;
|
|
}
|
|
}
|
|
break;
|
|
case CHR_IOCTL_PP_EPP_WRITE:
|
|
if (pp_hw_mode(drv, IEEE1284_MODE_EPP)) {
|
|
struct ParallelIOArg *parg = arg;
|
|
int n = write(fd, parg->buffer, parg->count);
|
|
if (n != parg->count) {
|
|
return -EIO;
|
|
}
|
|
}
|
|
break;
|
|
default:
|
|
return -ENOTSUP;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static void pp_close(CharDriverState *chr)
|
|
{
|
|
ParallelCharDriver *drv = chr->opaque;
|
|
int fd = drv->fd;
|
|
|
|
pp_hw_mode(drv, IEEE1284_MODE_COMPAT);
|
|
ioctl(fd, PPRELEASE);
|
|
close(fd);
|
|
g_free(drv);
|
|
qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
|
|
}
|
|
|
|
static CharDriverState *qemu_chr_open_pp_fd(int fd)
|
|
{
|
|
CharDriverState *chr;
|
|
ParallelCharDriver *drv;
|
|
|
|
if (ioctl(fd, PPCLAIM) < 0) {
|
|
close(fd);
|
|
return NULL;
|
|
}
|
|
|
|
drv = g_malloc0(sizeof(ParallelCharDriver));
|
|
drv->fd = fd;
|
|
drv->mode = IEEE1284_MODE_COMPAT;
|
|
|
|
chr = g_malloc0(sizeof(CharDriverState));
|
|
chr->chr_write = null_chr_write;
|
|
chr->chr_ioctl = pp_ioctl;
|
|
chr->chr_close = pp_close;
|
|
chr->opaque = drv;
|
|
|
|
qemu_chr_be_generic_open(chr);
|
|
|
|
return chr;
|
|
}
|
|
#endif /* __linux__ */
|
|
|
|
#if defined(__FreeBSD__) || defined(__FreeBSD_kernel__) || defined(__DragonFly__)
|
|
|
|
#define HAVE_CHARDEV_PARPORT 1
|
|
|
|
static int pp_ioctl(CharDriverState *chr, int cmd, void *arg)
|
|
{
|
|
int fd = (int)(intptr_t)chr->opaque;
|
|
uint8_t b;
|
|
|
|
switch(cmd) {
|
|
case CHR_IOCTL_PP_READ_DATA:
|
|
if (ioctl(fd, PPIGDATA, &b) < 0)
|
|
return -ENOTSUP;
|
|
*(uint8_t *)arg = b;
|
|
break;
|
|
case CHR_IOCTL_PP_WRITE_DATA:
|
|
b = *(uint8_t *)arg;
|
|
if (ioctl(fd, PPISDATA, &b) < 0)
|
|
return -ENOTSUP;
|
|
break;
|
|
case CHR_IOCTL_PP_READ_CONTROL:
|
|
if (ioctl(fd, PPIGCTRL, &b) < 0)
|
|
return -ENOTSUP;
|
|
*(uint8_t *)arg = b;
|
|
break;
|
|
case CHR_IOCTL_PP_WRITE_CONTROL:
|
|
b = *(uint8_t *)arg;
|
|
if (ioctl(fd, PPISCTRL, &b) < 0)
|
|
return -ENOTSUP;
|
|
break;
|
|
case CHR_IOCTL_PP_READ_STATUS:
|
|
if (ioctl(fd, PPIGSTATUS, &b) < 0)
|
|
return -ENOTSUP;
|
|
*(uint8_t *)arg = b;
|
|
break;
|
|
default:
|
|
return -ENOTSUP;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static CharDriverState *qemu_chr_open_pp_fd(int fd)
|
|
{
|
|
CharDriverState *chr;
|
|
|
|
chr = g_malloc0(sizeof(CharDriverState));
|
|
chr->opaque = (void *)(intptr_t)fd;
|
|
chr->chr_write = null_chr_write;
|
|
chr->chr_ioctl = pp_ioctl;
|
|
return chr;
|
|
}
|
|
#endif
|
|
|
|
#else /* _WIN32 */
|
|
|
|
typedef struct {
|
|
int max_size;
|
|
HANDLE hcom, hrecv, hsend;
|
|
OVERLAPPED orecv, osend;
|
|
BOOL fpipe;
|
|
DWORD len;
|
|
} WinCharState;
|
|
|
|
typedef struct {
|
|
HANDLE hStdIn;
|
|
HANDLE hInputReadyEvent;
|
|
HANDLE hInputDoneEvent;
|
|
HANDLE hInputThread;
|
|
uint8_t win_stdio_buf;
|
|
} WinStdioCharState;
|
|
|
|
#define NSENDBUF 2048
|
|
#define NRECVBUF 2048
|
|
#define MAXCONNECT 1
|
|
#define NTIMEOUT 5000
|
|
|
|
static int win_chr_poll(void *opaque);
|
|
static int win_chr_pipe_poll(void *opaque);
|
|
|
|
static void win_chr_close(CharDriverState *chr)
|
|
{
|
|
WinCharState *s = chr->opaque;
|
|
|
|
if (s->hsend) {
|
|
CloseHandle(s->hsend);
|
|
s->hsend = NULL;
|
|
}
|
|
if (s->hrecv) {
|
|
CloseHandle(s->hrecv);
|
|
s->hrecv = NULL;
|
|
}
|
|
if (s->hcom) {
|
|
CloseHandle(s->hcom);
|
|
s->hcom = NULL;
|
|
}
|
|
if (s->fpipe)
|
|
qemu_del_polling_cb(win_chr_pipe_poll, chr);
|
|
else
|
|
qemu_del_polling_cb(win_chr_poll, chr);
|
|
|
|
qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
|
|
}
|
|
|
|
static int win_chr_init(CharDriverState *chr, const char *filename)
|
|
{
|
|
WinCharState *s = chr->opaque;
|
|
COMMCONFIG comcfg;
|
|
COMMTIMEOUTS cto = { 0, 0, 0, 0, 0};
|
|
COMSTAT comstat;
|
|
DWORD size;
|
|
DWORD err;
|
|
|
|
s->hsend = CreateEvent(NULL, TRUE, FALSE, NULL);
|
|
if (!s->hsend) {
|
|
fprintf(stderr, "Failed CreateEvent\n");
|
|
goto fail;
|
|
}
|
|
s->hrecv = CreateEvent(NULL, TRUE, FALSE, NULL);
|
|
if (!s->hrecv) {
|
|
fprintf(stderr, "Failed CreateEvent\n");
|
|
goto fail;
|
|
}
|
|
|
|
s->hcom = CreateFile(filename, GENERIC_READ|GENERIC_WRITE, 0, NULL,
|
|
OPEN_EXISTING, FILE_FLAG_OVERLAPPED, 0);
|
|
if (s->hcom == INVALID_HANDLE_VALUE) {
|
|
fprintf(stderr, "Failed CreateFile (%lu)\n", GetLastError());
|
|
s->hcom = NULL;
|
|
goto fail;
|
|
}
|
|
|
|
if (!SetupComm(s->hcom, NRECVBUF, NSENDBUF)) {
|
|
fprintf(stderr, "Failed SetupComm\n");
|
|
goto fail;
|
|
}
|
|
|
|
ZeroMemory(&comcfg, sizeof(COMMCONFIG));
|
|
size = sizeof(COMMCONFIG);
|
|
GetDefaultCommConfig(filename, &comcfg, &size);
|
|
comcfg.dcb.DCBlength = sizeof(DCB);
|
|
CommConfigDialog(filename, NULL, &comcfg);
|
|
|
|
if (!SetCommState(s->hcom, &comcfg.dcb)) {
|
|
fprintf(stderr, "Failed SetCommState\n");
|
|
goto fail;
|
|
}
|
|
|
|
if (!SetCommMask(s->hcom, EV_ERR)) {
|
|
fprintf(stderr, "Failed SetCommMask\n");
|
|
goto fail;
|
|
}
|
|
|
|
cto.ReadIntervalTimeout = MAXDWORD;
|
|
if (!SetCommTimeouts(s->hcom, &cto)) {
|
|
fprintf(stderr, "Failed SetCommTimeouts\n");
|
|
goto fail;
|
|
}
|
|
|
|
if (!ClearCommError(s->hcom, &err, &comstat)) {
|
|
fprintf(stderr, "Failed ClearCommError\n");
|
|
goto fail;
|
|
}
|
|
qemu_add_polling_cb(win_chr_poll, chr);
|
|
return 0;
|
|
|
|
fail:
|
|
win_chr_close(chr);
|
|
return -1;
|
|
}
|
|
|
|
static int win_chr_write(CharDriverState *chr, const uint8_t *buf, int len1)
|
|
{
|
|
WinCharState *s = chr->opaque;
|
|
DWORD len, ret, size, err;
|
|
|
|
len = len1;
|
|
ZeroMemory(&s->osend, sizeof(s->osend));
|
|
s->osend.hEvent = s->hsend;
|
|
while (len > 0) {
|
|
if (s->hsend)
|
|
ret = WriteFile(s->hcom, buf, len, &size, &s->osend);
|
|
else
|
|
ret = WriteFile(s->hcom, buf, len, &size, NULL);
|
|
if (!ret) {
|
|
err = GetLastError();
|
|
if (err == ERROR_IO_PENDING) {
|
|
ret = GetOverlappedResult(s->hcom, &s->osend, &size, TRUE);
|
|
if (ret) {
|
|
buf += size;
|
|
len -= size;
|
|
} else {
|
|
break;
|
|
}
|
|
} else {
|
|
break;
|
|
}
|
|
} else {
|
|
buf += size;
|
|
len -= size;
|
|
}
|
|
}
|
|
return len1 - len;
|
|
}
|
|
|
|
static int win_chr_read_poll(CharDriverState *chr)
|
|
{
|
|
WinCharState *s = chr->opaque;
|
|
|
|
s->max_size = qemu_chr_be_can_write(chr);
|
|
return s->max_size;
|
|
}
|
|
|
|
static void win_chr_readfile(CharDriverState *chr)
|
|
{
|
|
WinCharState *s = chr->opaque;
|
|
int ret, err;
|
|
uint8_t buf[READ_BUF_LEN];
|
|
DWORD size;
|
|
|
|
ZeroMemory(&s->orecv, sizeof(s->orecv));
|
|
s->orecv.hEvent = s->hrecv;
|
|
ret = ReadFile(s->hcom, buf, s->len, &size, &s->orecv);
|
|
if (!ret) {
|
|
err = GetLastError();
|
|
if (err == ERROR_IO_PENDING) {
|
|
ret = GetOverlappedResult(s->hcom, &s->orecv, &size, TRUE);
|
|
}
|
|
}
|
|
|
|
if (size > 0) {
|
|
qemu_chr_be_write(chr, buf, size);
|
|
}
|
|
}
|
|
|
|
static void win_chr_read(CharDriverState *chr)
|
|
{
|
|
WinCharState *s = chr->opaque;
|
|
|
|
if (s->len > s->max_size)
|
|
s->len = s->max_size;
|
|
if (s->len == 0)
|
|
return;
|
|
|
|
win_chr_readfile(chr);
|
|
}
|
|
|
|
static int win_chr_poll(void *opaque)
|
|
{
|
|
CharDriverState *chr = opaque;
|
|
WinCharState *s = chr->opaque;
|
|
COMSTAT status;
|
|
DWORD comerr;
|
|
|
|
ClearCommError(s->hcom, &comerr, &status);
|
|
if (status.cbInQue > 0) {
|
|
s->len = status.cbInQue;
|
|
win_chr_read_poll(chr);
|
|
win_chr_read(chr);
|
|
return 1;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static CharDriverState *qemu_chr_open_win_path(const char *filename)
|
|
{
|
|
CharDriverState *chr;
|
|
WinCharState *s;
|
|
|
|
chr = g_malloc0(sizeof(CharDriverState));
|
|
s = g_malloc0(sizeof(WinCharState));
|
|
chr->opaque = s;
|
|
chr->chr_write = win_chr_write;
|
|
chr->chr_close = win_chr_close;
|
|
|
|
if (win_chr_init(chr, filename) < 0) {
|
|
g_free(s);
|
|
g_free(chr);
|
|
return NULL;
|
|
}
|
|
qemu_chr_be_generic_open(chr);
|
|
return chr;
|
|
}
|
|
|
|
static int win_chr_pipe_poll(void *opaque)
|
|
{
|
|
CharDriverState *chr = opaque;
|
|
WinCharState *s = chr->opaque;
|
|
DWORD size;
|
|
|
|
PeekNamedPipe(s->hcom, NULL, 0, NULL, &size, NULL);
|
|
if (size > 0) {
|
|
s->len = size;
|
|
win_chr_read_poll(chr);
|
|
win_chr_read(chr);
|
|
return 1;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static int win_chr_pipe_init(CharDriverState *chr, const char *filename)
|
|
{
|
|
WinCharState *s = chr->opaque;
|
|
OVERLAPPED ov;
|
|
int ret;
|
|
DWORD size;
|
|
char openname[256];
|
|
|
|
s->fpipe = TRUE;
|
|
|
|
s->hsend = CreateEvent(NULL, TRUE, FALSE, NULL);
|
|
if (!s->hsend) {
|
|
fprintf(stderr, "Failed CreateEvent\n");
|
|
goto fail;
|
|
}
|
|
s->hrecv = CreateEvent(NULL, TRUE, FALSE, NULL);
|
|
if (!s->hrecv) {
|
|
fprintf(stderr, "Failed CreateEvent\n");
|
|
goto fail;
|
|
}
|
|
|
|
snprintf(openname, sizeof(openname), "\\\\.\\pipe\\%s", filename);
|
|
s->hcom = CreateNamedPipe(openname, PIPE_ACCESS_DUPLEX | FILE_FLAG_OVERLAPPED,
|
|
PIPE_TYPE_BYTE | PIPE_READMODE_BYTE |
|
|
PIPE_WAIT,
|
|
MAXCONNECT, NSENDBUF, NRECVBUF, NTIMEOUT, NULL);
|
|
if (s->hcom == INVALID_HANDLE_VALUE) {
|
|
fprintf(stderr, "Failed CreateNamedPipe (%lu)\n", GetLastError());
|
|
s->hcom = NULL;
|
|
goto fail;
|
|
}
|
|
|
|
ZeroMemory(&ov, sizeof(ov));
|
|
ov.hEvent = CreateEvent(NULL, TRUE, FALSE, NULL);
|
|
ret = ConnectNamedPipe(s->hcom, &ov);
|
|
if (ret) {
|
|
fprintf(stderr, "Failed ConnectNamedPipe\n");
|
|
goto fail;
|
|
}
|
|
|
|
ret = GetOverlappedResult(s->hcom, &ov, &size, TRUE);
|
|
if (!ret) {
|
|
fprintf(stderr, "Failed GetOverlappedResult\n");
|
|
if (ov.hEvent) {
|
|
CloseHandle(ov.hEvent);
|
|
ov.hEvent = NULL;
|
|
}
|
|
goto fail;
|
|
}
|
|
|
|
if (ov.hEvent) {
|
|
CloseHandle(ov.hEvent);
|
|
ov.hEvent = NULL;
|
|
}
|
|
qemu_add_polling_cb(win_chr_pipe_poll, chr);
|
|
return 0;
|
|
|
|
fail:
|
|
win_chr_close(chr);
|
|
return -1;
|
|
}
|
|
|
|
|
|
static CharDriverState *qemu_chr_open_pipe(ChardevHostdev *opts)
|
|
{
|
|
const char *filename = opts->device;
|
|
CharDriverState *chr;
|
|
WinCharState *s;
|
|
|
|
chr = g_malloc0(sizeof(CharDriverState));
|
|
s = g_malloc0(sizeof(WinCharState));
|
|
chr->opaque = s;
|
|
chr->chr_write = win_chr_write;
|
|
chr->chr_close = win_chr_close;
|
|
|
|
if (win_chr_pipe_init(chr, filename) < 0) {
|
|
g_free(s);
|
|
g_free(chr);
|
|
return NULL;
|
|
}
|
|
qemu_chr_be_generic_open(chr);
|
|
return chr;
|
|
}
|
|
|
|
static CharDriverState *qemu_chr_open_win_file(HANDLE fd_out)
|
|
{
|
|
CharDriverState *chr;
|
|
WinCharState *s;
|
|
|
|
chr = g_malloc0(sizeof(CharDriverState));
|
|
s = g_malloc0(sizeof(WinCharState));
|
|
s->hcom = fd_out;
|
|
chr->opaque = s;
|
|
chr->chr_write = win_chr_write;
|
|
qemu_chr_be_generic_open(chr);
|
|
return chr;
|
|
}
|
|
|
|
static CharDriverState *qemu_chr_open_win_con(void)
|
|
{
|
|
return qemu_chr_open_win_file(GetStdHandle(STD_OUTPUT_HANDLE));
|
|
}
|
|
|
|
static int win_stdio_write(CharDriverState *chr, const uint8_t *buf, int len)
|
|
{
|
|
HANDLE hStdOut = GetStdHandle(STD_OUTPUT_HANDLE);
|
|
DWORD dwSize;
|
|
int len1;
|
|
|
|
len1 = len;
|
|
|
|
while (len1 > 0) {
|
|
if (!WriteFile(hStdOut, buf, len1, &dwSize, NULL)) {
|
|
break;
|
|
}
|
|
buf += dwSize;
|
|
len1 -= dwSize;
|
|
}
|
|
|
|
return len - len1;
|
|
}
|
|
|
|
static void win_stdio_wait_func(void *opaque)
|
|
{
|
|
CharDriverState *chr = opaque;
|
|
WinStdioCharState *stdio = chr->opaque;
|
|
INPUT_RECORD buf[4];
|
|
int ret;
|
|
DWORD dwSize;
|
|
int i;
|
|
|
|
ret = ReadConsoleInput(stdio->hStdIn, buf, sizeof(buf) / sizeof(*buf),
|
|
&dwSize);
|
|
|
|
if (!ret) {
|
|
/* Avoid error storm */
|
|
qemu_del_wait_object(stdio->hStdIn, NULL, NULL);
|
|
return;
|
|
}
|
|
|
|
for (i = 0; i < dwSize; i++) {
|
|
KEY_EVENT_RECORD *kev = &buf[i].Event.KeyEvent;
|
|
|
|
if (buf[i].EventType == KEY_EVENT && kev->bKeyDown) {
|
|
int j;
|
|
if (kev->uChar.AsciiChar != 0) {
|
|
for (j = 0; j < kev->wRepeatCount; j++) {
|
|
if (qemu_chr_be_can_write(chr)) {
|
|
uint8_t c = kev->uChar.AsciiChar;
|
|
qemu_chr_be_write(chr, &c, 1);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
static DWORD WINAPI win_stdio_thread(LPVOID param)
|
|
{
|
|
CharDriverState *chr = param;
|
|
WinStdioCharState *stdio = chr->opaque;
|
|
int ret;
|
|
DWORD dwSize;
|
|
|
|
while (1) {
|
|
|
|
/* Wait for one byte */
|
|
ret = ReadFile(stdio->hStdIn, &stdio->win_stdio_buf, 1, &dwSize, NULL);
|
|
|
|
/* Exit in case of error, continue if nothing read */
|
|
if (!ret) {
|
|
break;
|
|
}
|
|
if (!dwSize) {
|
|
continue;
|
|
}
|
|
|
|
/* Some terminal emulator returns \r\n for Enter, just pass \n */
|
|
if (stdio->win_stdio_buf == '\r') {
|
|
continue;
|
|
}
|
|
|
|
/* Signal the main thread and wait until the byte was eaten */
|
|
if (!SetEvent(stdio->hInputReadyEvent)) {
|
|
break;
|
|
}
|
|
if (WaitForSingleObject(stdio->hInputDoneEvent, INFINITE)
|
|
!= WAIT_OBJECT_0) {
|
|
break;
|
|
}
|
|
}
|
|
|
|
qemu_del_wait_object(stdio->hInputReadyEvent, NULL, NULL);
|
|
return 0;
|
|
}
|
|
|
|
static void win_stdio_thread_wait_func(void *opaque)
|
|
{
|
|
CharDriverState *chr = opaque;
|
|
WinStdioCharState *stdio = chr->opaque;
|
|
|
|
if (qemu_chr_be_can_write(chr)) {
|
|
qemu_chr_be_write(chr, &stdio->win_stdio_buf, 1);
|
|
}
|
|
|
|
SetEvent(stdio->hInputDoneEvent);
|
|
}
|
|
|
|
static void qemu_chr_set_echo_win_stdio(CharDriverState *chr, bool echo)
|
|
{
|
|
WinStdioCharState *stdio = chr->opaque;
|
|
DWORD dwMode = 0;
|
|
|
|
GetConsoleMode(stdio->hStdIn, &dwMode);
|
|
|
|
if (echo) {
|
|
SetConsoleMode(stdio->hStdIn, dwMode | ENABLE_ECHO_INPUT);
|
|
} else {
|
|
SetConsoleMode(stdio->hStdIn, dwMode & ~ENABLE_ECHO_INPUT);
|
|
}
|
|
}
|
|
|
|
static void win_stdio_close(CharDriverState *chr)
|
|
{
|
|
WinStdioCharState *stdio = chr->opaque;
|
|
|
|
if (stdio->hInputReadyEvent != INVALID_HANDLE_VALUE) {
|
|
CloseHandle(stdio->hInputReadyEvent);
|
|
}
|
|
if (stdio->hInputDoneEvent != INVALID_HANDLE_VALUE) {
|
|
CloseHandle(stdio->hInputDoneEvent);
|
|
}
|
|
if (stdio->hInputThread != INVALID_HANDLE_VALUE) {
|
|
TerminateThread(stdio->hInputThread, 0);
|
|
}
|
|
|
|
g_free(chr->opaque);
|
|
g_free(chr);
|
|
}
|
|
|
|
static CharDriverState *qemu_chr_open_stdio(ChardevStdio *opts)
|
|
{
|
|
CharDriverState *chr;
|
|
WinStdioCharState *stdio;
|
|
DWORD dwMode;
|
|
int is_console = 0;
|
|
|
|
chr = g_malloc0(sizeof(CharDriverState));
|
|
stdio = g_malloc0(sizeof(WinStdioCharState));
|
|
|
|
stdio->hStdIn = GetStdHandle(STD_INPUT_HANDLE);
|
|
if (stdio->hStdIn == INVALID_HANDLE_VALUE) {
|
|
fprintf(stderr, "cannot open stdio: invalid handle\n");
|
|
exit(1);
|
|
}
|
|
|
|
is_console = GetConsoleMode(stdio->hStdIn, &dwMode) != 0;
|
|
|
|
chr->opaque = stdio;
|
|
chr->chr_write = win_stdio_write;
|
|
chr->chr_close = win_stdio_close;
|
|
|
|
if (is_console) {
|
|
if (qemu_add_wait_object(stdio->hStdIn,
|
|
win_stdio_wait_func, chr)) {
|
|
fprintf(stderr, "qemu_add_wait_object: failed\n");
|
|
}
|
|
} else {
|
|
DWORD dwId;
|
|
|
|
stdio->hInputReadyEvent = CreateEvent(NULL, FALSE, FALSE, NULL);
|
|
stdio->hInputDoneEvent = CreateEvent(NULL, FALSE, FALSE, NULL);
|
|
stdio->hInputThread = CreateThread(NULL, 0, win_stdio_thread,
|
|
chr, 0, &dwId);
|
|
|
|
if (stdio->hInputThread == INVALID_HANDLE_VALUE
|
|
|| stdio->hInputReadyEvent == INVALID_HANDLE_VALUE
|
|
|| stdio->hInputDoneEvent == INVALID_HANDLE_VALUE) {
|
|
fprintf(stderr, "cannot create stdio thread or event\n");
|
|
exit(1);
|
|
}
|
|
if (qemu_add_wait_object(stdio->hInputReadyEvent,
|
|
win_stdio_thread_wait_func, chr)) {
|
|
fprintf(stderr, "qemu_add_wait_object: failed\n");
|
|
}
|
|
}
|
|
|
|
dwMode |= ENABLE_LINE_INPUT;
|
|
|
|
if (is_console) {
|
|
/* set the terminal in raw mode */
|
|
/* ENABLE_QUICK_EDIT_MODE | ENABLE_EXTENDED_FLAGS */
|
|
dwMode |= ENABLE_PROCESSED_INPUT;
|
|
}
|
|
|
|
SetConsoleMode(stdio->hStdIn, dwMode);
|
|
|
|
chr->chr_set_echo = qemu_chr_set_echo_win_stdio;
|
|
qemu_chr_fe_set_echo(chr, false);
|
|
|
|
return chr;
|
|
}
|
|
#endif /* !_WIN32 */
|
|
|
|
|
|
/***********************************************************/
|
|
/* UDP Net console */
|
|
|
|
typedef struct {
|
|
int fd;
|
|
GIOChannel *chan;
|
|
guint tag;
|
|
uint8_t buf[READ_BUF_LEN];
|
|
int bufcnt;
|
|
int bufptr;
|
|
int max_size;
|
|
} NetCharDriver;
|
|
|
|
static int udp_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
|
|
{
|
|
NetCharDriver *s = chr->opaque;
|
|
gsize bytes_written;
|
|
GIOStatus status;
|
|
|
|
status = g_io_channel_write_chars(s->chan, (const gchar *)buf, len, &bytes_written, NULL);
|
|
if (status == G_IO_STATUS_EOF) {
|
|
return 0;
|
|
} else if (status != G_IO_STATUS_NORMAL) {
|
|
return -1;
|
|
}
|
|
|
|
return bytes_written;
|
|
}
|
|
|
|
static int udp_chr_read_poll(void *opaque)
|
|
{
|
|
CharDriverState *chr = opaque;
|
|
NetCharDriver *s = chr->opaque;
|
|
|
|
s->max_size = qemu_chr_be_can_write(chr);
|
|
|
|
/* If there were any stray characters in the queue process them
|
|
* first
|
|
*/
|
|
while (s->max_size > 0 && s->bufptr < s->bufcnt) {
|
|
qemu_chr_be_write(chr, &s->buf[s->bufptr], 1);
|
|
s->bufptr++;
|
|
s->max_size = qemu_chr_be_can_write(chr);
|
|
}
|
|
return s->max_size;
|
|
}
|
|
|
|
static gboolean udp_chr_read(GIOChannel *chan, GIOCondition cond, void *opaque)
|
|
{
|
|
CharDriverState *chr = opaque;
|
|
NetCharDriver *s = chr->opaque;
|
|
gsize bytes_read = 0;
|
|
GIOStatus status;
|
|
|
|
if (s->max_size == 0)
|
|
return FALSE;
|
|
status = g_io_channel_read_chars(s->chan, (gchar *)s->buf, sizeof(s->buf),
|
|
&bytes_read, NULL);
|
|
s->bufcnt = bytes_read;
|
|
s->bufptr = s->bufcnt;
|
|
if (status != G_IO_STATUS_NORMAL) {
|
|
return FALSE;
|
|
}
|
|
|
|
s->bufptr = 0;
|
|
while (s->max_size > 0 && s->bufptr < s->bufcnt) {
|
|
qemu_chr_be_write(chr, &s->buf[s->bufptr], 1);
|
|
s->bufptr++;
|
|
s->max_size = qemu_chr_be_can_write(chr);
|
|
}
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
static void udp_chr_update_read_handler(CharDriverState *chr)
|
|
{
|
|
NetCharDriver *s = chr->opaque;
|
|
|
|
if (s->tag) {
|
|
g_source_remove(s->tag);
|
|
s->tag = 0;
|
|
}
|
|
|
|
if (s->chan) {
|
|
s->tag = io_add_watch_poll(s->chan, udp_chr_read_poll, udp_chr_read, chr);
|
|
}
|
|
}
|
|
|
|
static void udp_chr_close(CharDriverState *chr)
|
|
{
|
|
NetCharDriver *s = chr->opaque;
|
|
if (s->tag) {
|
|
g_source_remove(s->tag);
|
|
}
|
|
if (s->chan) {
|
|
g_io_channel_unref(s->chan);
|
|
closesocket(s->fd);
|
|
}
|
|
g_free(s);
|
|
qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
|
|
}
|
|
|
|
static CharDriverState *qemu_chr_open_udp_fd(int fd)
|
|
{
|
|
CharDriverState *chr = NULL;
|
|
NetCharDriver *s = NULL;
|
|
|
|
chr = g_malloc0(sizeof(CharDriverState));
|
|
s = g_malloc0(sizeof(NetCharDriver));
|
|
|
|
s->fd = fd;
|
|
s->chan = io_channel_from_socket(s->fd);
|
|
s->bufcnt = 0;
|
|
s->bufptr = 0;
|
|
chr->opaque = s;
|
|
chr->chr_write = udp_chr_write;
|
|
chr->chr_update_read_handler = udp_chr_update_read_handler;
|
|
chr->chr_close = udp_chr_close;
|
|
return chr;
|
|
}
|
|
|
|
static CharDriverState *qemu_chr_open_udp(QemuOpts *opts)
|
|
{
|
|
Error *local_err = NULL;
|
|
int fd = -1;
|
|
|
|
fd = inet_dgram_opts(opts, &local_err);
|
|
if (fd < 0) {
|
|
return NULL;
|
|
}
|
|
return qemu_chr_open_udp_fd(fd);
|
|
}
|
|
|
|
/***********************************************************/
|
|
/* TCP Net console */
|
|
|
|
typedef struct {
|
|
|
|
GIOChannel *chan, *listen_chan;
|
|
guint tag, listen_tag;
|
|
int fd, listen_fd;
|
|
int connected;
|
|
int max_size;
|
|
int do_telnetopt;
|
|
int do_nodelay;
|
|
int is_unix;
|
|
int msgfd;
|
|
} TCPCharDriver;
|
|
|
|
static gboolean tcp_chr_accept(GIOChannel *chan, GIOCondition cond, void *opaque);
|
|
|
|
static int tcp_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
|
|
{
|
|
TCPCharDriver *s = chr->opaque;
|
|
if (s->connected) {
|
|
return io_channel_send(s->chan, buf, len);
|
|
} else {
|
|
/* XXX: indicate an error ? */
|
|
return len;
|
|
}
|
|
}
|
|
|
|
static int tcp_chr_read_poll(void *opaque)
|
|
{
|
|
CharDriverState *chr = opaque;
|
|
TCPCharDriver *s = chr->opaque;
|
|
if (!s->connected)
|
|
return 0;
|
|
s->max_size = qemu_chr_be_can_write(chr);
|
|
return s->max_size;
|
|
}
|
|
|
|
#define IAC 255
|
|
#define IAC_BREAK 243
|
|
static void tcp_chr_process_IAC_bytes(CharDriverState *chr,
|
|
TCPCharDriver *s,
|
|
uint8_t *buf, int *size)
|
|
{
|
|
/* Handle any telnet client's basic IAC options to satisfy char by
|
|
* char mode with no echo. All IAC options will be removed from
|
|
* the buf and the do_telnetopt variable will be used to track the
|
|
* state of the width of the IAC information.
|
|
*
|
|
* IAC commands come in sets of 3 bytes with the exception of the
|
|
* "IAC BREAK" command and the double IAC.
|
|
*/
|
|
|
|
int i;
|
|
int j = 0;
|
|
|
|
for (i = 0; i < *size; i++) {
|
|
if (s->do_telnetopt > 1) {
|
|
if ((unsigned char)buf[i] == IAC && s->do_telnetopt == 2) {
|
|
/* Double IAC means send an IAC */
|
|
if (j != i)
|
|
buf[j] = buf[i];
|
|
j++;
|
|
s->do_telnetopt = 1;
|
|
} else {
|
|
if ((unsigned char)buf[i] == IAC_BREAK && s->do_telnetopt == 2) {
|
|
/* Handle IAC break commands by sending a serial break */
|
|
qemu_chr_be_event(chr, CHR_EVENT_BREAK);
|
|
s->do_telnetopt++;
|
|
}
|
|
s->do_telnetopt++;
|
|
}
|
|
if (s->do_telnetopt >= 4) {
|
|
s->do_telnetopt = 1;
|
|
}
|
|
} else {
|
|
if ((unsigned char)buf[i] == IAC) {
|
|
s->do_telnetopt = 2;
|
|
} else {
|
|
if (j != i)
|
|
buf[j] = buf[i];
|
|
j++;
|
|
}
|
|
}
|
|
}
|
|
*size = j;
|
|
}
|
|
|
|
static int tcp_get_msgfd(CharDriverState *chr)
|
|
{
|
|
TCPCharDriver *s = chr->opaque;
|
|
int fd = s->msgfd;
|
|
s->msgfd = -1;
|
|
return fd;
|
|
}
|
|
|
|
#ifndef _WIN32
|
|
static void unix_process_msgfd(CharDriverState *chr, struct msghdr *msg)
|
|
{
|
|
TCPCharDriver *s = chr->opaque;
|
|
struct cmsghdr *cmsg;
|
|
|
|
for (cmsg = CMSG_FIRSTHDR(msg); cmsg; cmsg = CMSG_NXTHDR(msg, cmsg)) {
|
|
int fd;
|
|
|
|
if (cmsg->cmsg_len != CMSG_LEN(sizeof(int)) ||
|
|
cmsg->cmsg_level != SOL_SOCKET ||
|
|
cmsg->cmsg_type != SCM_RIGHTS)
|
|
continue;
|
|
|
|
fd = *((int *)CMSG_DATA(cmsg));
|
|
if (fd < 0)
|
|
continue;
|
|
|
|
#ifndef MSG_CMSG_CLOEXEC
|
|
qemu_set_cloexec(fd);
|
|
#endif
|
|
if (s->msgfd != -1)
|
|
close(s->msgfd);
|
|
s->msgfd = fd;
|
|
}
|
|
}
|
|
|
|
static ssize_t tcp_chr_recv(CharDriverState *chr, char *buf, size_t len)
|
|
{
|
|
TCPCharDriver *s = chr->opaque;
|
|
struct msghdr msg = { NULL, };
|
|
struct iovec iov[1];
|
|
union {
|
|
struct cmsghdr cmsg;
|
|
char control[CMSG_SPACE(sizeof(int))];
|
|
} msg_control;
|
|
int flags = 0;
|
|
ssize_t ret;
|
|
|
|
iov[0].iov_base = buf;
|
|
iov[0].iov_len = len;
|
|
|
|
msg.msg_iov = iov;
|
|
msg.msg_iovlen = 1;
|
|
msg.msg_control = &msg_control;
|
|
msg.msg_controllen = sizeof(msg_control);
|
|
|
|
#ifdef MSG_CMSG_CLOEXEC
|
|
flags |= MSG_CMSG_CLOEXEC;
|
|
#endif
|
|
ret = recvmsg(s->fd, &msg, flags);
|
|
if (ret > 0 && s->is_unix) {
|
|
unix_process_msgfd(chr, &msg);
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
#else
|
|
static ssize_t tcp_chr_recv(CharDriverState *chr, char *buf, size_t len)
|
|
{
|
|
TCPCharDriver *s = chr->opaque;
|
|
return qemu_recv(s->fd, buf, len, 0);
|
|
}
|
|
#endif
|
|
|
|
static GSource *tcp_chr_add_watch(CharDriverState *chr, GIOCondition cond)
|
|
{
|
|
TCPCharDriver *s = chr->opaque;
|
|
return g_io_create_watch(s->chan, cond);
|
|
}
|
|
|
|
static gboolean tcp_chr_read(GIOChannel *chan, GIOCondition cond, void *opaque)
|
|
{
|
|
CharDriverState *chr = opaque;
|
|
TCPCharDriver *s = chr->opaque;
|
|
uint8_t buf[READ_BUF_LEN];
|
|
int len, size;
|
|
|
|
if (!s->connected || s->max_size <= 0) {
|
|
return FALSE;
|
|
}
|
|
len = sizeof(buf);
|
|
if (len > s->max_size)
|
|
len = s->max_size;
|
|
size = tcp_chr_recv(chr, (void *)buf, len);
|
|
if (size == 0) {
|
|
/* connection closed */
|
|
s->connected = 0;
|
|
if (s->listen_chan) {
|
|
s->listen_tag = g_io_add_watch(s->listen_chan, G_IO_IN, tcp_chr_accept, chr);
|
|
}
|
|
g_source_remove(s->tag);
|
|
s->tag = 0;
|
|
g_io_channel_unref(s->chan);
|
|
s->chan = NULL;
|
|
closesocket(s->fd);
|
|
s->fd = -1;
|
|
qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
|
|
} else if (size > 0) {
|
|
if (s->do_telnetopt)
|
|
tcp_chr_process_IAC_bytes(chr, s, buf, &size);
|
|
if (size > 0)
|
|
qemu_chr_be_write(chr, buf, size);
|
|
}
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
#ifndef _WIN32
|
|
CharDriverState *qemu_chr_open_eventfd(int eventfd)
|
|
{
|
|
return qemu_chr_open_fd(eventfd, eventfd);
|
|
}
|
|
#endif
|
|
|
|
static void tcp_chr_connect(void *opaque)
|
|
{
|
|
CharDriverState *chr = opaque;
|
|
TCPCharDriver *s = chr->opaque;
|
|
|
|
s->connected = 1;
|
|
if (s->chan) {
|
|
s->tag = io_add_watch_poll(s->chan, tcp_chr_read_poll, tcp_chr_read, chr);
|
|
}
|
|
qemu_chr_be_generic_open(chr);
|
|
}
|
|
|
|
#define IACSET(x,a,b,c) x[0] = a; x[1] = b; x[2] = c;
|
|
static void tcp_chr_telnet_init(int fd)
|
|
{
|
|
char buf[3];
|
|
/* Send the telnet negotion to put telnet in binary, no echo, single char mode */
|
|
IACSET(buf, 0xff, 0xfb, 0x01); /* IAC WILL ECHO */
|
|
send(fd, (char *)buf, 3, 0);
|
|
IACSET(buf, 0xff, 0xfb, 0x03); /* IAC WILL Suppress go ahead */
|
|
send(fd, (char *)buf, 3, 0);
|
|
IACSET(buf, 0xff, 0xfb, 0x00); /* IAC WILL Binary */
|
|
send(fd, (char *)buf, 3, 0);
|
|
IACSET(buf, 0xff, 0xfd, 0x00); /* IAC DO Binary */
|
|
send(fd, (char *)buf, 3, 0);
|
|
}
|
|
|
|
static int tcp_chr_add_client(CharDriverState *chr, int fd)
|
|
{
|
|
TCPCharDriver *s = chr->opaque;
|
|
if (s->fd != -1)
|
|
return -1;
|
|
|
|
socket_set_nonblock(fd);
|
|
if (s->do_nodelay)
|
|
socket_set_nodelay(fd);
|
|
s->fd = fd;
|
|
s->chan = io_channel_from_socket(fd);
|
|
g_source_remove(s->listen_tag);
|
|
s->listen_tag = 0;
|
|
tcp_chr_connect(chr);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static gboolean tcp_chr_accept(GIOChannel *channel, GIOCondition cond, void *opaque)
|
|
{
|
|
CharDriverState *chr = opaque;
|
|
TCPCharDriver *s = chr->opaque;
|
|
struct sockaddr_in saddr;
|
|
#ifndef _WIN32
|
|
struct sockaddr_un uaddr;
|
|
#endif
|
|
struct sockaddr *addr;
|
|
socklen_t len;
|
|
int fd;
|
|
|
|
for(;;) {
|
|
#ifndef _WIN32
|
|
if (s->is_unix) {
|
|
len = sizeof(uaddr);
|
|
addr = (struct sockaddr *)&uaddr;
|
|
} else
|
|
#endif
|
|
{
|
|
len = sizeof(saddr);
|
|
addr = (struct sockaddr *)&saddr;
|
|
}
|
|
fd = qemu_accept(s->listen_fd, addr, &len);
|
|
if (fd < 0 && errno != EINTR) {
|
|
return FALSE;
|
|
} else if (fd >= 0) {
|
|
if (s->do_telnetopt)
|
|
tcp_chr_telnet_init(fd);
|
|
break;
|
|
}
|
|
}
|
|
if (tcp_chr_add_client(chr, fd) < 0)
|
|
close(fd);
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
static void tcp_chr_close(CharDriverState *chr)
|
|
{
|
|
TCPCharDriver *s = chr->opaque;
|
|
if (s->fd >= 0) {
|
|
if (s->tag) {
|
|
g_source_remove(s->tag);
|
|
}
|
|
if (s->chan) {
|
|
g_io_channel_unref(s->chan);
|
|
}
|
|
closesocket(s->fd);
|
|
}
|
|
if (s->listen_fd >= 0) {
|
|
if (s->listen_tag) {
|
|
g_source_remove(s->listen_tag);
|
|
}
|
|
if (s->listen_chan) {
|
|
g_io_channel_unref(s->listen_chan);
|
|
}
|
|
closesocket(s->listen_fd);
|
|
}
|
|
g_free(s);
|
|
qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
|
|
}
|
|
|
|
static CharDriverState *qemu_chr_open_socket_fd(int fd, bool do_nodelay,
|
|
bool is_listen, bool is_telnet,
|
|
bool is_waitconnect,
|
|
Error **errp)
|
|
{
|
|
CharDriverState *chr = NULL;
|
|
TCPCharDriver *s = NULL;
|
|
char host[NI_MAXHOST], serv[NI_MAXSERV];
|
|
const char *left = "", *right = "";
|
|
struct sockaddr_storage ss;
|
|
socklen_t ss_len = sizeof(ss);
|
|
|
|
memset(&ss, 0, ss_len);
|
|
if (getsockname(fd, (struct sockaddr *) &ss, &ss_len) != 0) {
|
|
error_setg(errp, "getsockname: %s", strerror(errno));
|
|
return NULL;
|
|
}
|
|
|
|
chr = g_malloc0(sizeof(CharDriverState));
|
|
s = g_malloc0(sizeof(TCPCharDriver));
|
|
|
|
s->connected = 0;
|
|
s->fd = -1;
|
|
s->listen_fd = -1;
|
|
s->msgfd = -1;
|
|
|
|
chr->filename = g_malloc(256);
|
|
switch (ss.ss_family) {
|
|
#ifndef _WIN32
|
|
case AF_UNIX:
|
|
s->is_unix = 1;
|
|
snprintf(chr->filename, 256, "unix:%s%s",
|
|
((struct sockaddr_un *)(&ss))->sun_path,
|
|
is_listen ? ",server" : "");
|
|
break;
|
|
#endif
|
|
case AF_INET6:
|
|
left = "[";
|
|
right = "]";
|
|
/* fall through */
|
|
case AF_INET:
|
|
s->do_nodelay = do_nodelay;
|
|
getnameinfo((struct sockaddr *) &ss, ss_len, host, sizeof(host),
|
|
serv, sizeof(serv), NI_NUMERICHOST | NI_NUMERICSERV);
|
|
snprintf(chr->filename, 256, "%s:%s%s%s:%s%s",
|
|
is_telnet ? "telnet" : "tcp",
|
|
left, host, right, serv,
|
|
is_listen ? ",server" : "");
|
|
break;
|
|
}
|
|
|
|
chr->opaque = s;
|
|
chr->chr_write = tcp_chr_write;
|
|
chr->chr_close = tcp_chr_close;
|
|
chr->get_msgfd = tcp_get_msgfd;
|
|
chr->chr_add_client = tcp_chr_add_client;
|
|
chr->chr_add_watch = tcp_chr_add_watch;
|
|
|
|
if (is_listen) {
|
|
s->listen_fd = fd;
|
|
s->listen_chan = io_channel_from_socket(s->listen_fd);
|
|
s->listen_tag = g_io_add_watch(s->listen_chan, G_IO_IN, tcp_chr_accept, chr);
|
|
if (is_telnet) {
|
|
s->do_telnetopt = 1;
|
|
}
|
|
} else {
|
|
s->connected = 1;
|
|
s->fd = fd;
|
|
socket_set_nodelay(fd);
|
|
s->chan = io_channel_from_socket(s->fd);
|
|
tcp_chr_connect(chr);
|
|
}
|
|
|
|
if (is_listen && is_waitconnect) {
|
|
printf("QEMU waiting for connection on: %s\n",
|
|
chr->filename);
|
|
tcp_chr_accept(s->listen_chan, G_IO_IN, chr);
|
|
socket_set_nonblock(s->listen_fd);
|
|
}
|
|
return chr;
|
|
}
|
|
|
|
static CharDriverState *qemu_chr_open_socket(QemuOpts *opts)
|
|
{
|
|
CharDriverState *chr = NULL;
|
|
Error *local_err = NULL;
|
|
int fd = -1;
|
|
int is_listen;
|
|
int is_waitconnect;
|
|
int do_nodelay;
|
|
int is_unix;
|
|
int is_telnet;
|
|
|
|
is_listen = qemu_opt_get_bool(opts, "server", 0);
|
|
is_waitconnect = qemu_opt_get_bool(opts, "wait", 1);
|
|
is_telnet = qemu_opt_get_bool(opts, "telnet", 0);
|
|
do_nodelay = !qemu_opt_get_bool(opts, "delay", 1);
|
|
is_unix = qemu_opt_get(opts, "path") != NULL;
|
|
if (!is_listen)
|
|
is_waitconnect = 0;
|
|
|
|
if (is_unix) {
|
|
if (is_listen) {
|
|
fd = unix_listen_opts(opts, &local_err);
|
|
} else {
|
|
fd = unix_connect_opts(opts, &local_err, NULL, NULL);
|
|
}
|
|
} else {
|
|
if (is_listen) {
|
|
fd = inet_listen_opts(opts, 0, &local_err);
|
|
} else {
|
|
fd = inet_connect_opts(opts, &local_err, NULL, NULL);
|
|
}
|
|
}
|
|
if (fd < 0) {
|
|
goto fail;
|
|
}
|
|
|
|
if (!is_waitconnect)
|
|
socket_set_nonblock(fd);
|
|
|
|
chr = qemu_chr_open_socket_fd(fd, do_nodelay, is_listen, is_telnet,
|
|
is_waitconnect, &local_err);
|
|
if (error_is_set(&local_err)) {
|
|
goto fail;
|
|
}
|
|
return chr;
|
|
|
|
|
|
fail:
|
|
if (local_err) {
|
|
qerror_report_err(local_err);
|
|
error_free(local_err);
|
|
}
|
|
if (fd >= 0) {
|
|
closesocket(fd);
|
|
}
|
|
if (chr) {
|
|
g_free(chr->opaque);
|
|
g_free(chr);
|
|
}
|
|
return NULL;
|
|
}
|
|
|
|
/***********************************************************/
|
|
/* Memory chardev */
|
|
typedef struct {
|
|
size_t outbuf_size;
|
|
size_t outbuf_capacity;
|
|
uint8_t *outbuf;
|
|
} MemoryDriver;
|
|
|
|
static int mem_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
|
|
{
|
|
MemoryDriver *d = chr->opaque;
|
|
|
|
/* TODO: the QString implementation has the same code, we should
|
|
* introduce a generic way to do this in cutils.c */
|
|
if (d->outbuf_capacity < d->outbuf_size + len) {
|
|
/* grow outbuf */
|
|
d->outbuf_capacity += len;
|
|
d->outbuf_capacity *= 2;
|
|
d->outbuf = g_realloc(d->outbuf, d->outbuf_capacity);
|
|
}
|
|
|
|
memcpy(d->outbuf + d->outbuf_size, buf, len);
|
|
d->outbuf_size += len;
|
|
|
|
return len;
|
|
}
|
|
|
|
void qemu_chr_init_mem(CharDriverState *chr)
|
|
{
|
|
MemoryDriver *d;
|
|
|
|
d = g_malloc(sizeof(*d));
|
|
d->outbuf_size = 0;
|
|
d->outbuf_capacity = 4096;
|
|
d->outbuf = g_malloc0(d->outbuf_capacity);
|
|
|
|
memset(chr, 0, sizeof(*chr));
|
|
chr->opaque = d;
|
|
chr->chr_write = mem_chr_write;
|
|
}
|
|
|
|
QString *qemu_chr_mem_to_qs(CharDriverState *chr)
|
|
{
|
|
MemoryDriver *d = chr->opaque;
|
|
return qstring_from_substr((char *) d->outbuf, 0, d->outbuf_size - 1);
|
|
}
|
|
|
|
/* NOTE: this driver can not be closed with qemu_chr_delete()! */
|
|
void qemu_chr_close_mem(CharDriverState *chr)
|
|
{
|
|
MemoryDriver *d = chr->opaque;
|
|
|
|
g_free(d->outbuf);
|
|
g_free(chr->opaque);
|
|
chr->opaque = NULL;
|
|
chr->chr_write = NULL;
|
|
}
|
|
|
|
size_t qemu_chr_mem_osize(const CharDriverState *chr)
|
|
{
|
|
const MemoryDriver *d = chr->opaque;
|
|
return d->outbuf_size;
|
|
}
|
|
|
|
/*********************************************************/
|
|
/* 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;
|
|
}
|
|
|
|
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;
|
|
|
|
for (i = 0; i < len && d->cons != d->prod; i++) {
|
|
buf[i] = d->cbuf[d->cons++ & (d->size - 1)];
|
|
}
|
|
|
|
return i;
|
|
}
|
|
|
|
static void ringbuf_chr_close(struct CharDriverState *chr)
|
|
{
|
|
RingBufCharDriver *d = chr->opaque;
|
|
|
|
g_free(d->cbuf);
|
|
g_free(d);
|
|
chr->opaque = NULL;
|
|
}
|
|
|
|
static CharDriverState *qemu_chr_open_ringbuf(ChardevRingbuf *opts,
|
|
Error **errp)
|
|
{
|
|
CharDriverState *chr;
|
|
RingBufCharDriver *d;
|
|
|
|
chr = g_malloc0(sizeof(CharDriverState));
|
|
d = g_malloc(sizeof(*d));
|
|
|
|
d->size = opts->has_size ? opts->size : 65536;
|
|
|
|
/* The size must be power of 2 */
|
|
if (d->size & (d->size - 1)) {
|
|
error_setg(errp, "size of ringbuf chardev must be power of two");
|
|
goto fail;
|
|
}
|
|
|
|
d->prod = 0;
|
|
d->cons = 0;
|
|
d->cbuf = g_malloc0(d->size);
|
|
|
|
chr->opaque = d;
|
|
chr->chr_write = ringbuf_chr_write;
|
|
chr->chr_close = ringbuf_chr_close;
|
|
|
|
return chr;
|
|
|
|
fail:
|
|
g_free(d);
|
|
g_free(chr);
|
|
return NULL;
|
|
}
|
|
|
|
static 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;
|
|
size_t write_count;
|
|
|
|
chr = qemu_chr_find(device);
|
|
if (!chr) {
|
|
error_setg(errp, "Device '%s' not found", device);
|
|
return;
|
|
}
|
|
|
|
if (!chr_is_ringbuf(chr)) {
|
|
error_setg(errp,"%s is not a ringbuf device", device);
|
|
return;
|
|
}
|
|
|
|
if (has_format && (format == DATA_FORMAT_BASE64)) {
|
|
write_data = g_base64_decode(data, &write_count);
|
|
} else {
|
|
write_data = (uint8_t *)data;
|
|
write_count = strlen(data);
|
|
}
|
|
|
|
ret = ringbuf_chr_write(chr, write_data, write_count);
|
|
|
|
if (write_data != (uint8_t *)data) {
|
|
g_free((void *)write_data);
|
|
}
|
|
|
|
if (ret < 0) {
|
|
error_setg(errp, "Failed to write to device %s", device);
|
|
return;
|
|
}
|
|
}
|
|
|
|
char *qmp_ringbuf_read(const char *device, int64_t size,
|
|
bool has_format, enum DataFormat format,
|
|
Error **errp)
|
|
{
|
|
CharDriverState *chr;
|
|
uint8_t *read_data;
|
|
size_t count;
|
|
char *data;
|
|
|
|
chr = qemu_chr_find(device);
|
|
if (!chr) {
|
|
error_setg(errp, "Device '%s' not found", device);
|
|
return NULL;
|
|
}
|
|
|
|
if (!chr_is_ringbuf(chr)) {
|
|
error_setg(errp,"%s is not a ringbuf device", device);
|
|
return NULL;
|
|
}
|
|
|
|
if (size <= 0) {
|
|
error_setg(errp, "size must be greater than zero");
|
|
return NULL;
|
|
}
|
|
|
|
count = ringbuf_count(chr);
|
|
size = size > count ? count : size;
|
|
read_data = g_malloc(size + 1);
|
|
|
|
ringbuf_chr_read(chr, read_data, size);
|
|
|
|
if (has_format && (format == DATA_FORMAT_BASE64)) {
|
|
data = g_base64_encode(read_data, size);
|
|
g_free(read_data);
|
|
} else {
|
|
/*
|
|
* FIXME should read only complete, valid UTF-8 characters up
|
|
* to @size bytes. Invalid sequences should be replaced by a
|
|
* suitable replacement character. Except when (and only
|
|
* when) ring buffer lost characters since last read, initial
|
|
* continuation characters should be dropped.
|
|
*/
|
|
read_data[size] = 0;
|
|
data = (char *)read_data;
|
|
}
|
|
|
|
return data;
|
|
}
|
|
|
|
QemuOpts *qemu_chr_parse_compat(const char *label, const char *filename)
|
|
{
|
|
char host[65], port[33], width[8], height[8];
|
|
int pos;
|
|
const char *p;
|
|
QemuOpts *opts;
|
|
Error *local_err = NULL;
|
|
|
|
opts = qemu_opts_create(qemu_find_opts("chardev"), label, 1, &local_err);
|
|
if (error_is_set(&local_err)) {
|
|
qerror_report_err(local_err);
|
|
error_free(local_err);
|
|
return NULL;
|
|
}
|
|
|
|
if (strstart(filename, "mon:", &p)) {
|
|
filename = p;
|
|
qemu_opt_set(opts, "mux", "on");
|
|
}
|
|
|
|
if (strcmp(filename, "null") == 0 ||
|
|
strcmp(filename, "pty") == 0 ||
|
|
strcmp(filename, "msmouse") == 0 ||
|
|
strcmp(filename, "braille") == 0 ||
|
|
strcmp(filename, "stdio") == 0) {
|
|
qemu_opt_set(opts, "backend", filename);
|
|
return opts;
|
|
}
|
|
if (strstart(filename, "vc", &p)) {
|
|
qemu_opt_set(opts, "backend", "vc");
|
|
if (*p == ':') {
|
|
if (sscanf(p+1, "%8[0-9]x%8[0-9]", width, height) == 2) {
|
|
/* pixels */
|
|
qemu_opt_set(opts, "width", width);
|
|
qemu_opt_set(opts, "height", height);
|
|
} else if (sscanf(p+1, "%8[0-9]Cx%8[0-9]C", width, height) == 2) {
|
|
/* chars */
|
|
qemu_opt_set(opts, "cols", width);
|
|
qemu_opt_set(opts, "rows", height);
|
|
} else {
|
|
goto fail;
|
|
}
|
|
}
|
|
return opts;
|
|
}
|
|
if (strcmp(filename, "con:") == 0) {
|
|
qemu_opt_set(opts, "backend", "console");
|
|
return opts;
|
|
}
|
|
if (strstart(filename, "COM", NULL)) {
|
|
qemu_opt_set(opts, "backend", "serial");
|
|
qemu_opt_set(opts, "path", filename);
|
|
return opts;
|
|
}
|
|
if (strstart(filename, "file:", &p)) {
|
|
qemu_opt_set(opts, "backend", "file");
|
|
qemu_opt_set(opts, "path", p);
|
|
return opts;
|
|
}
|
|
if (strstart(filename, "pipe:", &p)) {
|
|
qemu_opt_set(opts, "backend", "pipe");
|
|
qemu_opt_set(opts, "path", p);
|
|
return opts;
|
|
}
|
|
if (strstart(filename, "tcp:", &p) ||
|
|
strstart(filename, "telnet:", &p)) {
|
|
if (sscanf(p, "%64[^:]:%32[^,]%n", host, port, &pos) < 2) {
|
|
host[0] = 0;
|
|
if (sscanf(p, ":%32[^,]%n", port, &pos) < 1)
|
|
goto fail;
|
|
}
|
|
qemu_opt_set(opts, "backend", "socket");
|
|
qemu_opt_set(opts, "host", host);
|
|
qemu_opt_set(opts, "port", port);
|
|
if (p[pos] == ',') {
|
|
if (qemu_opts_do_parse(opts, p+pos+1, NULL) != 0)
|
|
goto fail;
|
|
}
|
|
if (strstart(filename, "telnet:", &p))
|
|
qemu_opt_set(opts, "telnet", "on");
|
|
return opts;
|
|
}
|
|
if (strstart(filename, "udp:", &p)) {
|
|
qemu_opt_set(opts, "backend", "udp");
|
|
if (sscanf(p, "%64[^:]:%32[^@,]%n", host, port, &pos) < 2) {
|
|
host[0] = 0;
|
|
if (sscanf(p, ":%32[^@,]%n", port, &pos) < 1) {
|
|
goto fail;
|
|
}
|
|
}
|
|
qemu_opt_set(opts, "host", host);
|
|
qemu_opt_set(opts, "port", port);
|
|
if (p[pos] == '@') {
|
|
p += pos + 1;
|
|
if (sscanf(p, "%64[^:]:%32[^,]%n", host, port, &pos) < 2) {
|
|
host[0] = 0;
|
|
if (sscanf(p, ":%32[^,]%n", port, &pos) < 1) {
|
|
goto fail;
|
|
}
|
|
}
|
|
qemu_opt_set(opts, "localaddr", host);
|
|
qemu_opt_set(opts, "localport", port);
|
|
}
|
|
return opts;
|
|
}
|
|
if (strstart(filename, "unix:", &p)) {
|
|
qemu_opt_set(opts, "backend", "socket");
|
|
if (qemu_opts_do_parse(opts, p, "path") != 0)
|
|
goto fail;
|
|
return opts;
|
|
}
|
|
if (strstart(filename, "/dev/parport", NULL) ||
|
|
strstart(filename, "/dev/ppi", NULL)) {
|
|
qemu_opt_set(opts, "backend", "parport");
|
|
qemu_opt_set(opts, "path", filename);
|
|
return opts;
|
|
}
|
|
if (strstart(filename, "/dev/", NULL)) {
|
|
qemu_opt_set(opts, "backend", "tty");
|
|
qemu_opt_set(opts, "path", filename);
|
|
return opts;
|
|
}
|
|
|
|
fail:
|
|
qemu_opts_del(opts);
|
|
return NULL;
|
|
}
|
|
|
|
static void qemu_chr_parse_file_out(QemuOpts *opts, ChardevBackend *backend,
|
|
Error **errp)
|
|
{
|
|
const char *path = qemu_opt_get(opts, "path");
|
|
|
|
if (path == NULL) {
|
|
error_setg(errp, "chardev: file: no filename given");
|
|
return;
|
|
}
|
|
backend->file = g_new0(ChardevFile, 1);
|
|
backend->file->out = g_strdup(path);
|
|
}
|
|
|
|
static void qemu_chr_parse_stdio(QemuOpts *opts, ChardevBackend *backend,
|
|
Error **errp)
|
|
{
|
|
backend->stdio = g_new0(ChardevStdio, 1);
|
|
backend->stdio->has_signal = true;
|
|
backend->stdio->signal =
|
|
qemu_opt_get_bool(opts, "signal", display_type != DT_NOGRAPHIC);
|
|
}
|
|
|
|
static void qemu_chr_parse_serial(QemuOpts *opts, ChardevBackend *backend,
|
|
Error **errp)
|
|
{
|
|
const char *device = qemu_opt_get(opts, "path");
|
|
|
|
if (device == NULL) {
|
|
error_setg(errp, "chardev: serial/tty: no device path given");
|
|
return;
|
|
}
|
|
backend->serial = g_new0(ChardevHostdev, 1);
|
|
backend->serial->device = g_strdup(device);
|
|
}
|
|
|
|
static void qemu_chr_parse_parallel(QemuOpts *opts, ChardevBackend *backend,
|
|
Error **errp)
|
|
{
|
|
const char *device = qemu_opt_get(opts, "path");
|
|
|
|
if (device == NULL) {
|
|
error_setg(errp, "chardev: parallel: no device path given");
|
|
return;
|
|
}
|
|
backend->parallel = g_new0(ChardevHostdev, 1);
|
|
backend->parallel->device = g_strdup(device);
|
|
}
|
|
|
|
static void qemu_chr_parse_pipe(QemuOpts *opts, ChardevBackend *backend,
|
|
Error **errp)
|
|
{
|
|
const char *device = qemu_opt_get(opts, "path");
|
|
|
|
if (device == NULL) {
|
|
error_setg(errp, "chardev: pipe: no device path given");
|
|
return;
|
|
}
|
|
backend->pipe = g_new0(ChardevHostdev, 1);
|
|
backend->pipe->device = g_strdup(device);
|
|
}
|
|
|
|
static void qemu_chr_parse_ringbuf(QemuOpts *opts, ChardevBackend *backend,
|
|
Error **errp)
|
|
{
|
|
int val;
|
|
|
|
backend->memory = g_new0(ChardevRingbuf, 1);
|
|
|
|
val = qemu_opt_get_number(opts, "size", 0);
|
|
if (val != 0) {
|
|
backend->memory->has_size = true;
|
|
backend->memory->size = val;
|
|
}
|
|
}
|
|
|
|
typedef struct CharDriver {
|
|
const char *name;
|
|
/* old, pre qapi */
|
|
CharDriverState *(*open)(QemuOpts *opts);
|
|
/* new, qapi-based */
|
|
int kind;
|
|
void (*parse)(QemuOpts *opts, ChardevBackend *backend, Error **errp);
|
|
} CharDriver;
|
|
|
|
static GSList *backends;
|
|
|
|
void register_char_driver(const char *name, CharDriverState *(*open)(QemuOpts *))
|
|
{
|
|
CharDriver *s;
|
|
|
|
s = g_malloc0(sizeof(*s));
|
|
s->name = g_strdup(name);
|
|
s->open = open;
|
|
|
|
backends = g_slist_append(backends, s);
|
|
}
|
|
|
|
void register_char_driver_qapi(const char *name, int kind,
|
|
void (*parse)(QemuOpts *opts, ChardevBackend *backend, Error **errp))
|
|
{
|
|
CharDriver *s;
|
|
|
|
s = g_malloc0(sizeof(*s));
|
|
s->name = g_strdup(name);
|
|
s->kind = kind;
|
|
s->parse = parse;
|
|
|
|
backends = g_slist_append(backends, s);
|
|
}
|
|
|
|
CharDriverState *qemu_chr_new_from_opts(QemuOpts *opts,
|
|
void (*init)(struct CharDriverState *s),
|
|
Error **errp)
|
|
{
|
|
CharDriver *cd;
|
|
CharDriverState *chr;
|
|
GSList *i;
|
|
|
|
if (qemu_opts_id(opts) == NULL) {
|
|
error_setg(errp, "chardev: no id specified");
|
|
goto err;
|
|
}
|
|
|
|
if (qemu_opt_get(opts, "backend") == NULL) {
|
|
error_setg(errp, "chardev: \"%s\" missing backend",
|
|
qemu_opts_id(opts));
|
|
goto err;
|
|
}
|
|
for (i = backends; i; i = i->next) {
|
|
cd = i->data;
|
|
|
|
if (strcmp(cd->name, qemu_opt_get(opts, "backend")) == 0) {
|
|
break;
|
|
}
|
|
}
|
|
if (i == NULL) {
|
|
error_setg(errp, "chardev: backend \"%s\" not found",
|
|
qemu_opt_get(opts, "backend"));
|
|
return NULL;
|
|
}
|
|
|
|
if (!cd->open) {
|
|
/* using new, qapi init */
|
|
ChardevBackend *backend = g_new0(ChardevBackend, 1);
|
|
ChardevReturn *ret = NULL;
|
|
const char *id = qemu_opts_id(opts);
|
|
const char *bid = NULL;
|
|
|
|
if (qemu_opt_get_bool(opts, "mux", 0)) {
|
|
bid = g_strdup_printf("%s-base", id);
|
|
}
|
|
|
|
chr = NULL;
|
|
backend->kind = cd->kind;
|
|
if (cd->parse) {
|
|
cd->parse(opts, backend, errp);
|
|
if (error_is_set(errp)) {
|
|
goto qapi_out;
|
|
}
|
|
}
|
|
ret = qmp_chardev_add(bid ? bid : id, backend, errp);
|
|
if (error_is_set(errp)) {
|
|
goto qapi_out;
|
|
}
|
|
|
|
if (bid) {
|
|
qapi_free_ChardevBackend(backend);
|
|
qapi_free_ChardevReturn(ret);
|
|
backend = g_new0(ChardevBackend, 1);
|
|
backend->mux = g_new0(ChardevMux, 1);
|
|
backend->kind = CHARDEV_BACKEND_KIND_MUX;
|
|
backend->mux->chardev = g_strdup(bid);
|
|
ret = qmp_chardev_add(id, backend, errp);
|
|
if (error_is_set(errp)) {
|
|
goto qapi_out;
|
|
}
|
|
}
|
|
|
|
chr = qemu_chr_find(id);
|
|
|
|
qapi_out:
|
|
qapi_free_ChardevBackend(backend);
|
|
qapi_free_ChardevReturn(ret);
|
|
return chr;
|
|
}
|
|
|
|
chr = cd->open(opts);
|
|
if (!chr) {
|
|
error_setg(errp, "chardev: opening backend \"%s\" failed",
|
|
qemu_opt_get(opts, "backend"));
|
|
goto err;
|
|
}
|
|
|
|
if (!chr->filename)
|
|
chr->filename = g_strdup(qemu_opt_get(opts, "backend"));
|
|
chr->init = init;
|
|
QTAILQ_INSERT_TAIL(&chardevs, chr, next);
|
|
|
|
if (qemu_opt_get_bool(opts, "mux", 0)) {
|
|
CharDriverState *base = chr;
|
|
int len = strlen(qemu_opts_id(opts)) + 6;
|
|
base->label = g_malloc(len);
|
|
snprintf(base->label, len, "%s-base", qemu_opts_id(opts));
|
|
chr = qemu_chr_open_mux(base);
|
|
chr->filename = base->filename;
|
|
chr->avail_connections = MAX_MUX;
|
|
QTAILQ_INSERT_TAIL(&chardevs, chr, next);
|
|
} else {
|
|
chr->avail_connections = 1;
|
|
}
|
|
chr->label = g_strdup(qemu_opts_id(opts));
|
|
chr->opts = opts;
|
|
return chr;
|
|
|
|
err:
|
|
qemu_opts_del(opts);
|
|
return NULL;
|
|
}
|
|
|
|
CharDriverState *qemu_chr_new(const char *label, const char *filename, void (*init)(struct CharDriverState *s))
|
|
{
|
|
const char *p;
|
|
CharDriverState *chr;
|
|
QemuOpts *opts;
|
|
Error *err = NULL;
|
|
|
|
if (strstart(filename, "chardev:", &p)) {
|
|
return qemu_chr_find(p);
|
|
}
|
|
|
|
opts = qemu_chr_parse_compat(label, filename);
|
|
if (!opts)
|
|
return NULL;
|
|
|
|
chr = qemu_chr_new_from_opts(opts, init, &err);
|
|
if (error_is_set(&err)) {
|
|
fprintf(stderr, "%s\n", error_get_pretty(err));
|
|
error_free(err);
|
|
}
|
|
if (chr && qemu_opt_get_bool(opts, "mux", 0)) {
|
|
monitor_init(chr, MONITOR_USE_READLINE);
|
|
}
|
|
return chr;
|
|
}
|
|
|
|
void qemu_chr_fe_set_echo(struct CharDriverState *chr, bool echo)
|
|
{
|
|
if (chr->chr_set_echo) {
|
|
chr->chr_set_echo(chr, echo);
|
|
}
|
|
}
|
|
|
|
void qemu_chr_fe_set_open(struct CharDriverState *chr, int fe_open)
|
|
{
|
|
if (chr->fe_open == fe_open) {
|
|
return;
|
|
}
|
|
chr->fe_open = fe_open;
|
|
if (chr->chr_set_fe_open) {
|
|
chr->chr_set_fe_open(chr, fe_open);
|
|
}
|
|
}
|
|
|
|
int qemu_chr_fe_add_watch(CharDriverState *s, GIOCondition cond,
|
|
GIOFunc func, void *user_data)
|
|
{
|
|
GSource *src;
|
|
guint tag;
|
|
|
|
if (s->chr_add_watch == NULL) {
|
|
return -ENOSYS;
|
|
}
|
|
|
|
src = s->chr_add_watch(s, cond);
|
|
g_source_set_callback(src, (GSourceFunc)func, user_data, NULL);
|
|
tag = g_source_attach(src, NULL);
|
|
g_source_unref(src);
|
|
|
|
return tag;
|
|
}
|
|
|
|
void qemu_chr_delete(CharDriverState *chr)
|
|
{
|
|
QTAILQ_REMOVE(&chardevs, chr, next);
|
|
if (chr->chr_close) {
|
|
chr->chr_close(chr);
|
|
}
|
|
g_free(chr->filename);
|
|
g_free(chr->label);
|
|
if (chr->opts) {
|
|
qemu_opts_del(chr->opts);
|
|
}
|
|
g_free(chr);
|
|
}
|
|
|
|
ChardevInfoList *qmp_query_chardev(Error **errp)
|
|
{
|
|
ChardevInfoList *chr_list = NULL;
|
|
CharDriverState *chr;
|
|
|
|
QTAILQ_FOREACH(chr, &chardevs, next) {
|
|
ChardevInfoList *info = g_malloc0(sizeof(*info));
|
|
info->value = g_malloc0(sizeof(*info->value));
|
|
info->value->label = g_strdup(chr->label);
|
|
info->value->filename = g_strdup(chr->filename);
|
|
|
|
info->next = chr_list;
|
|
chr_list = info;
|
|
}
|
|
|
|
return chr_list;
|
|
}
|
|
|
|
CharDriverState *qemu_chr_find(const char *name)
|
|
{
|
|
CharDriverState *chr;
|
|
|
|
QTAILQ_FOREACH(chr, &chardevs, next) {
|
|
if (strcmp(chr->label, name) != 0)
|
|
continue;
|
|
return chr;
|
|
}
|
|
return NULL;
|
|
}
|
|
|
|
/* Get a character (serial) device interface. */
|
|
CharDriverState *qemu_char_get_next_serial(void)
|
|
{
|
|
static int next_serial;
|
|
|
|
/* FIXME: This function needs to go away: use chardev properties! */
|
|
return serial_hds[next_serial++];
|
|
}
|
|
|
|
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 = "telnet",
|
|
.type = QEMU_OPT_BOOL,
|
|
},{
|
|
.name = "width",
|
|
.type = QEMU_OPT_NUMBER,
|
|
},{
|
|
.name = "height",
|
|
.type = QEMU_OPT_NUMBER,
|
|
},{
|
|
.name = "cols",
|
|
.type = QEMU_OPT_NUMBER,
|
|
},{
|
|
.name = "rows",
|
|
.type = QEMU_OPT_NUMBER,
|
|
},{
|
|
.name = "mux",
|
|
.type = QEMU_OPT_BOOL,
|
|
},{
|
|
.name = "signal",
|
|
.type = QEMU_OPT_BOOL,
|
|
},{
|
|
.name = "name",
|
|
.type = QEMU_OPT_STRING,
|
|
},{
|
|
.name = "debug",
|
|
.type = QEMU_OPT_NUMBER,
|
|
},{
|
|
.name = "size",
|
|
.type = QEMU_OPT_SIZE,
|
|
},
|
|
{ /* end of list */ }
|
|
},
|
|
};
|
|
|
|
#ifdef _WIN32
|
|
|
|
static CharDriverState *qmp_chardev_open_file(ChardevFile *file, Error **errp)
|
|
{
|
|
HANDLE out;
|
|
|
|
if (file->in) {
|
|
error_setg(errp, "input file not supported");
|
|
return NULL;
|
|
}
|
|
|
|
out = CreateFile(file->out, GENERIC_WRITE, FILE_SHARE_READ, NULL,
|
|
OPEN_ALWAYS, FILE_ATTRIBUTE_NORMAL, NULL);
|
|
if (out == INVALID_HANDLE_VALUE) {
|
|
error_setg(errp, "open %s failed", file->out);
|
|
return NULL;
|
|
}
|
|
return qemu_chr_open_win_file(out);
|
|
}
|
|
|
|
static CharDriverState *qmp_chardev_open_serial(ChardevHostdev *serial,
|
|
Error **errp)
|
|
{
|
|
return qemu_chr_open_win_path(serial->device);
|
|
}
|
|
|
|
static CharDriverState *qmp_chardev_open_parallel(ChardevHostdev *parallel,
|
|
Error **errp)
|
|
{
|
|
error_setg(errp, "character device backend type 'parallel' not supported");
|
|
return NULL;
|
|
}
|
|
|
|
#else /* WIN32 */
|
|
|
|
static int qmp_chardev_open_file_source(char *src, int flags,
|
|
Error **errp)
|
|
{
|
|
int fd = -1;
|
|
|
|
TFR(fd = qemu_open(src, flags, 0666));
|
|
if (fd == -1) {
|
|
error_setg(errp, "open %s: %s", src, strerror(errno));
|
|
}
|
|
return fd;
|
|
}
|
|
|
|
static CharDriverState *qmp_chardev_open_file(ChardevFile *file, Error **errp)
|
|
{
|
|
int flags, in = -1, out = -1;
|
|
|
|
flags = O_WRONLY | O_TRUNC | O_CREAT | O_BINARY;
|
|
out = qmp_chardev_open_file_source(file->out, flags, errp);
|
|
if (error_is_set(errp)) {
|
|
return NULL;
|
|
}
|
|
|
|
if (file->in) {
|
|
flags = O_RDONLY;
|
|
in = qmp_chardev_open_file_source(file->in, flags, errp);
|
|
if (error_is_set(errp)) {
|
|
qemu_close(out);
|
|
return NULL;
|
|
}
|
|
}
|
|
|
|
return qemu_chr_open_fd(in, out);
|
|
}
|
|
|
|
static CharDriverState *qmp_chardev_open_serial(ChardevHostdev *serial,
|
|
Error **errp)
|
|
{
|
|
#ifdef HAVE_CHARDEV_TTY
|
|
int fd;
|
|
|
|
fd = qmp_chardev_open_file_source(serial->device, O_RDWR, errp);
|
|
if (error_is_set(errp)) {
|
|
return NULL;
|
|
}
|
|
socket_set_nonblock(fd);
|
|
return qemu_chr_open_tty_fd(fd);
|
|
#else
|
|
error_setg(errp, "character device backend type 'serial' not supported");
|
|
return NULL;
|
|
#endif
|
|
}
|
|
|
|
static CharDriverState *qmp_chardev_open_parallel(ChardevHostdev *parallel,
|
|
Error **errp)
|
|
{
|
|
#ifdef HAVE_CHARDEV_PARPORT
|
|
int fd;
|
|
|
|
fd = qmp_chardev_open_file_source(parallel->device, O_RDWR, errp);
|
|
if (error_is_set(errp)) {
|
|
return NULL;
|
|
}
|
|
return qemu_chr_open_pp_fd(fd);
|
|
#else
|
|
error_setg(errp, "character device backend type 'parallel' not supported");
|
|
return NULL;
|
|
#endif
|
|
}
|
|
|
|
#endif /* WIN32 */
|
|
|
|
static CharDriverState *qmp_chardev_open_socket(ChardevSocket *sock,
|
|
Error **errp)
|
|
{
|
|
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;
|
|
int fd;
|
|
|
|
if (is_listen) {
|
|
fd = socket_listen(addr, errp);
|
|
} else {
|
|
fd = socket_connect(addr, errp, NULL, NULL);
|
|
}
|
|
if (error_is_set(errp)) {
|
|
return NULL;
|
|
}
|
|
return qemu_chr_open_socket_fd(fd, do_nodelay, is_listen,
|
|
is_telnet, is_waitconnect, errp);
|
|
}
|
|
|
|
static CharDriverState *qmp_chardev_open_dgram(ChardevDgram *dgram,
|
|
Error **errp)
|
|
{
|
|
int fd;
|
|
|
|
fd = socket_dgram(dgram->remote, dgram->local, errp);
|
|
if (error_is_set(errp)) {
|
|
return NULL;
|
|
}
|
|
return qemu_chr_open_udp_fd(fd);
|
|
}
|
|
|
|
ChardevReturn *qmp_chardev_add(const char *id, ChardevBackend *backend,
|
|
Error **errp)
|
|
{
|
|
ChardevReturn *ret = g_new0(ChardevReturn, 1);
|
|
CharDriverState *base, *chr = NULL;
|
|
|
|
chr = qemu_chr_find(id);
|
|
if (chr) {
|
|
error_setg(errp, "Chardev '%s' already exists", id);
|
|
g_free(ret);
|
|
return NULL;
|
|
}
|
|
|
|
switch (backend->kind) {
|
|
case CHARDEV_BACKEND_KIND_FILE:
|
|
chr = qmp_chardev_open_file(backend->file, errp);
|
|
break;
|
|
case CHARDEV_BACKEND_KIND_SERIAL:
|
|
chr = qmp_chardev_open_serial(backend->serial, errp);
|
|
break;
|
|
case CHARDEV_BACKEND_KIND_PARALLEL:
|
|
chr = qmp_chardev_open_parallel(backend->parallel, errp);
|
|
break;
|
|
case CHARDEV_BACKEND_KIND_PIPE:
|
|
chr = qemu_chr_open_pipe(backend->pipe);
|
|
break;
|
|
case CHARDEV_BACKEND_KIND_SOCKET:
|
|
chr = qmp_chardev_open_socket(backend->socket, errp);
|
|
break;
|
|
case CHARDEV_BACKEND_KIND_DGRAM:
|
|
chr = qmp_chardev_open_dgram(backend->dgram, errp);
|
|
break;
|
|
#ifdef HAVE_CHARDEV_TTY
|
|
case CHARDEV_BACKEND_KIND_PTY:
|
|
chr = qemu_chr_open_pty(id, ret);
|
|
break;
|
|
#endif
|
|
case CHARDEV_BACKEND_KIND_NULL:
|
|
chr = qemu_chr_open_null();
|
|
break;
|
|
case CHARDEV_BACKEND_KIND_MUX:
|
|
base = qemu_chr_find(backend->mux->chardev);
|
|
if (base == NULL) {
|
|
error_setg(errp, "mux: base chardev %s not found",
|
|
backend->mux->chardev);
|
|
break;
|
|
}
|
|
chr = qemu_chr_open_mux(base);
|
|
break;
|
|
case CHARDEV_BACKEND_KIND_MSMOUSE:
|
|
chr = qemu_chr_open_msmouse();
|
|
break;
|
|
#ifdef CONFIG_BRLAPI
|
|
case CHARDEV_BACKEND_KIND_BRAILLE:
|
|
chr = chr_baum_init();
|
|
break;
|
|
#endif
|
|
case CHARDEV_BACKEND_KIND_STDIO:
|
|
chr = qemu_chr_open_stdio(backend->stdio);
|
|
break;
|
|
#ifdef _WIN32
|
|
case CHARDEV_BACKEND_KIND_CONSOLE:
|
|
chr = qemu_chr_open_win_con();
|
|
break;
|
|
#endif
|
|
#ifdef CONFIG_SPICE
|
|
case CHARDEV_BACKEND_KIND_SPICEVMC:
|
|
chr = qemu_chr_open_spice_vmc(backend->spicevmc->type);
|
|
break;
|
|
case CHARDEV_BACKEND_KIND_SPICEPORT:
|
|
chr = qemu_chr_open_spice_port(backend->spiceport->fqdn);
|
|
break;
|
|
#endif
|
|
case CHARDEV_BACKEND_KIND_VC:
|
|
chr = vc_init(backend->vc);
|
|
break;
|
|
case CHARDEV_BACKEND_KIND_MEMORY:
|
|
chr = qemu_chr_open_ringbuf(backend->memory, errp);
|
|
break;
|
|
default:
|
|
error_setg(errp, "unknown chardev backend (%d)", backend->kind);
|
|
break;
|
|
}
|
|
|
|
if (chr == NULL && !error_is_set(errp)) {
|
|
error_setg(errp, "Failed to create chardev");
|
|
}
|
|
if (chr) {
|
|
chr->label = g_strdup(id);
|
|
chr->avail_connections =
|
|
(backend->kind == CHARDEV_BACKEND_KIND_MUX) ? MAX_MUX : 1;
|
|
QTAILQ_INSERT_TAIL(&chardevs, chr, next);
|
|
return ret;
|
|
} else {
|
|
g_free(ret);
|
|
return NULL;
|
|
}
|
|
}
|
|
|
|
void qmp_chardev_remove(const char *id, Error **errp)
|
|
{
|
|
CharDriverState *chr;
|
|
|
|
chr = qemu_chr_find(id);
|
|
if (NULL == chr) {
|
|
error_setg(errp, "Chardev '%s' not found", id);
|
|
return;
|
|
}
|
|
if (chr->chr_can_read || chr->chr_read ||
|
|
chr->chr_event || chr->handler_opaque) {
|
|
error_setg(errp, "Chardev '%s' is busy", id);
|
|
return;
|
|
}
|
|
qemu_chr_delete(chr);
|
|
}
|
|
|
|
static void register_types(void)
|
|
{
|
|
register_char_driver_qapi("null", CHARDEV_BACKEND_KIND_NULL, NULL);
|
|
register_char_driver("socket", qemu_chr_open_socket);
|
|
register_char_driver("udp", qemu_chr_open_udp);
|
|
register_char_driver_qapi("memory", CHARDEV_BACKEND_KIND_MEMORY,
|
|
qemu_chr_parse_ringbuf);
|
|
register_char_driver_qapi("file", CHARDEV_BACKEND_KIND_FILE,
|
|
qemu_chr_parse_file_out);
|
|
register_char_driver_qapi("stdio", CHARDEV_BACKEND_KIND_STDIO,
|
|
qemu_chr_parse_stdio);
|
|
register_char_driver_qapi("serial", CHARDEV_BACKEND_KIND_SERIAL,
|
|
qemu_chr_parse_serial);
|
|
register_char_driver_qapi("tty", CHARDEV_BACKEND_KIND_SERIAL,
|
|
qemu_chr_parse_serial);
|
|
register_char_driver_qapi("parallel", CHARDEV_BACKEND_KIND_PARALLEL,
|
|
qemu_chr_parse_parallel);
|
|
register_char_driver_qapi("parport", CHARDEV_BACKEND_KIND_PARALLEL,
|
|
qemu_chr_parse_parallel);
|
|
register_char_driver_qapi("pty", CHARDEV_BACKEND_KIND_PTY, NULL);
|
|
register_char_driver_qapi("console", CHARDEV_BACKEND_KIND_CONSOLE, NULL);
|
|
register_char_driver_qapi("pipe", CHARDEV_BACKEND_KIND_PIPE,
|
|
qemu_chr_parse_pipe);
|
|
}
|
|
|
|
type_init(register_types);
|