summaryrefslogtreecommitdiffstats
path: root/qemu/qemu-char.c
diff options
context:
space:
mode:
authorRajithaY <rajithax.yerrumsetty@intel.com>2017-04-25 03:31:15 -0700
committerRajitha Yerrumchetty <rajithax.yerrumsetty@intel.com>2017-05-22 06:48:08 +0000
commitbb756eebdac6fd24e8919e2c43f7d2c8c4091f59 (patch)
treeca11e03542edf2d8f631efeca5e1626d211107e3 /qemu/qemu-char.c
parenta14b48d18a9ed03ec191cf16b162206998a895ce (diff)
Adding qemu as a submodule of KVMFORNFV
This Patch includes the changes to add qemu as a submodule to kvmfornfv repo and make use of the updated latest qemu for the execution of all testcase Change-Id: I1280af507a857675c7f81d30c95255635667bdd7 Signed-off-by:RajithaY<rajithax.yerrumsetty@intel.com>
Diffstat (limited to 'qemu/qemu-char.c')
-rw-r--r--qemu/qemu-char.c4609
1 files changed, 0 insertions, 4609 deletions
diff --git a/qemu/qemu-char.c b/qemu/qemu-char.c
deleted file mode 100644
index b597ee19c..000000000
--- a/qemu/qemu-char.c
+++ /dev/null
@@ -1,4609 +0,0 @@
-/*
- * QEMU System Emulator
- *
- * Copyright (c) 2003-2008 Fabrice Bellard
- *
- * Permission is hereby granted, free of charge, to any person obtaining a copy
- * of this software and associated documentation files (the "Software"), to deal
- * in the Software without restriction, including without limitation the rights
- * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
- * copies of the Software, and to permit persons to whom the Software is
- * furnished to do so, subject to the following conditions:
- *
- * The above copyright notice and this permission notice shall be included in
- * all copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
- * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
- * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
- * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
- * THE SOFTWARE.
- */
-#include "qemu/osdep.h"
-#include "qemu-common.h"
-#include "qemu/cutils.h"
-#include "monitor/monitor.h"
-#include "sysemu/sysemu.h"
-#include "sysemu/block-backend.h"
-#include "qemu/error-report.h"
-#include "qemu/timer.h"
-#include "sysemu/char.h"
-#include "hw/usb.h"
-#include "qmp-commands.h"
-#include "qapi/qmp-input-visitor.h"
-#include "qapi/qmp-output-visitor.h"
-#include "qapi-visit.h"
-#include "qemu/base64.h"
-#include "io/channel-socket.h"
-#include "io/channel-file.h"
-#include "io/channel-tls.h"
-#include "sysemu/replay.h"
-
-#include <zlib.h>
-
-#ifndef _WIN32
-#include <sys/times.h>
-#include <sys/wait.h>
-#include <termios.h>
-#include <sys/mman.h>
-#include <sys/ioctl.h>
-#include <sys/resource.h>
-#include <sys/socket.h>
-#include <netinet/in.h>
-#include <net/if.h>
-#include <arpa/inet.h>
-#include <netdb.h>
-#include <sys/select.h>
-#ifdef CONFIG_BSD
-#if defined(__FreeBSD__) || defined(__FreeBSD_kernel__)
-#include <dev/ppbus/ppi.h>
-#include <dev/ppbus/ppbconf.h>
-#elif defined(__DragonFly__)
-#include <dev/misc/ppi/ppi.h>
-#include <bus/ppbus/ppbconf.h>
-#endif
-#else
-#ifdef __linux__
-#include <linux/ppdev.h>
-#include <linux/parport.h>
-#endif
-#ifdef __sun__
-#include <sys/ethernet.h>
-#include <sys/sockio.h>
-#include <netinet/arp.h>
-#include <netinet/in.h>
-#include <netinet/in_systm.h>
-#include <netinet/ip.h>
-#include <netinet/ip_icmp.h> // must come after ip.h
-#include <netinet/udp.h>
-#include <netinet/tcp.h>
-#endif
-#endif
-#endif
-
-#include "qemu/sockets.h"
-#include "ui/qemu-spice.h"
-
-#define READ_BUF_LEN 4096
-#define READ_RETRIES 10
-#define TCP_MAX_FDS 16
-
-/***********************************************************/
-/* Socket address helpers */
-
-static char *SocketAddress_to_str(const char *prefix, SocketAddress *addr,
- bool is_listen, bool is_telnet)
-{
- switch (addr->type) {
- case SOCKET_ADDRESS_KIND_INET:
- return g_strdup_printf("%s%s:%s:%s%s", prefix,
- is_telnet ? "telnet" : "tcp",
- addr->u.inet.data->host,
- addr->u.inet.data->port,
- is_listen ? ",server" : "");
- break;
- case SOCKET_ADDRESS_KIND_UNIX:
- return g_strdup_printf("%sunix:%s%s", prefix,
- addr->u.q_unix.data->path,
- is_listen ? ",server" : "");
- break;
- case SOCKET_ADDRESS_KIND_FD:
- return g_strdup_printf("%sfd:%s%s", prefix, addr->u.fd.data->str,
- is_listen ? ",server" : "");
- break;
- default:
- abort();
- }
-}
-
-static char *sockaddr_to_str(struct sockaddr_storage *ss, socklen_t ss_len,
- struct sockaddr_storage *ps, socklen_t ps_len,
- bool is_listen, bool is_telnet)
-{
- char shost[NI_MAXHOST], sserv[NI_MAXSERV];
- char phost[NI_MAXHOST], pserv[NI_MAXSERV];
- const char *left = "", *right = "";
-
- switch (ss->ss_family) {
-#ifndef _WIN32
- case AF_UNIX:
- return g_strdup_printf("unix:%s%s",
- ((struct sockaddr_un *)(ss))->sun_path,
- is_listen ? ",server" : "");
-#endif
- case AF_INET6:
- left = "[";
- right = "]";
- /* fall through */
- case AF_INET:
- getnameinfo((struct sockaddr *) ss, ss_len, shost, sizeof(shost),
- sserv, sizeof(sserv), NI_NUMERICHOST | NI_NUMERICSERV);
- getnameinfo((struct sockaddr *) ps, ps_len, phost, sizeof(phost),
- pserv, sizeof(pserv), NI_NUMERICHOST | NI_NUMERICSERV);
- return g_strdup_printf("%s:%s%s%s:%s%s <-> %s%s%s:%s",
- is_telnet ? "telnet" : "tcp",
- left, shost, right, sserv,
- is_listen ? ",server" : "",
- left, phost, right, pserv);
-
- default:
- return g_strdup_printf("unknown");
- }
-}
-
-/***********************************************************/
-/* character device */
-
-static QTAILQ_HEAD(CharDriverStateHead, CharDriverState) chardevs =
- QTAILQ_HEAD_INITIALIZER(chardevs);
-
-static void qemu_chr_free_common(CharDriverState *chr);
-
-CharDriverState *qemu_chr_alloc(ChardevCommon *backend, Error **errp)
-{
- CharDriverState *chr = g_malloc0(sizeof(CharDriverState));
- qemu_mutex_init(&chr->chr_write_lock);
-
- if (backend->has_logfile) {
- int flags = O_WRONLY | O_CREAT;
- if (backend->has_logappend &&
- backend->logappend) {
- flags |= O_APPEND;
- } else {
- flags |= O_TRUNC;
- }
- chr->logfd = qemu_open(backend->logfile, flags, 0666);
- if (chr->logfd < 0) {
- error_setg_errno(errp, errno,
- "Unable to open logfile %s",
- backend->logfile);
- g_free(chr);
- return NULL;
- }
- } else {
- chr->logfd = -1;
- }
-
- return chr;
-}
-
-void qemu_chr_be_event(CharDriverState *s, int event)
-{
- /* Keep track if the char device is open */
- switch (event) {
- case CHR_EVENT_OPENED:
- s->be_open = 1;
- break;
- case CHR_EVENT_CLOSED:
- s->be_open = 0;
- break;
- }
-
- if (!s->chr_event)
- return;
- s->chr_event(s->handler_opaque, event);
-}
-
-void qemu_chr_be_generic_open(CharDriverState *s)
-{
- qemu_chr_be_event(s, CHR_EVENT_OPENED);
-}
-
-
-/* Not reporting errors from writing to logfile, as logs are
- * defined to be "best effort" only */
-static void qemu_chr_fe_write_log(CharDriverState *s,
- const uint8_t *buf, size_t len)
-{
- size_t done = 0;
- ssize_t ret;
-
- if (s->logfd < 0) {
- return;
- }
-
- while (done < len) {
- retry:
- ret = write(s->logfd, buf + done, len - done);
- if (ret == -1 && errno == EAGAIN) {
- g_usleep(100);
- goto retry;
- }
-
- if (ret <= 0) {
- return;
- }
- done += ret;
- }
-}
-
-static int qemu_chr_fe_write_buffer(CharDriverState *s, const uint8_t *buf, int len, int *offset)
-{
- int res = 0;
- *offset = 0;
-
- qemu_mutex_lock(&s->chr_write_lock);
- while (*offset < len) {
- retry:
- res = s->chr_write(s, buf + *offset, len - *offset);
- if (res < 0 && errno == EAGAIN) {
- g_usleep(100);
- goto retry;
- }
-
- if (res <= 0) {
- break;
- }
-
- *offset += res;
- }
- if (*offset > 0) {
- qemu_chr_fe_write_log(s, buf, *offset);
- }
- qemu_mutex_unlock(&s->chr_write_lock);
-
- return res;
-}
-
-int qemu_chr_fe_write(CharDriverState *s, const uint8_t *buf, int len)
-{
- int ret;
-
- if (s->replay && replay_mode == REPLAY_MODE_PLAY) {
- int offset;
- replay_char_write_event_load(&ret, &offset);
- assert(offset <= len);
- qemu_chr_fe_write_buffer(s, buf, offset, &offset);
- return ret;
- }
-
- qemu_mutex_lock(&s->chr_write_lock);
- ret = s->chr_write(s, buf, len);
-
- if (ret > 0) {
- qemu_chr_fe_write_log(s, buf, ret);
- }
-
- qemu_mutex_unlock(&s->chr_write_lock);
-
- if (s->replay && replay_mode == REPLAY_MODE_RECORD) {
- replay_char_write_event_save(ret, ret < 0 ? 0 : ret);
- }
-
- return ret;
-}
-
-int qemu_chr_fe_write_all(CharDriverState *s, const uint8_t *buf, int len)
-{
- int offset;
- int res;
-
- if (s->replay && replay_mode == REPLAY_MODE_PLAY) {
- replay_char_write_event_load(&res, &offset);
- assert(offset <= len);
- qemu_chr_fe_write_buffer(s, buf, offset, &offset);
- return res;
- }
-
- res = qemu_chr_fe_write_buffer(s, buf, len, &offset);
-
- if (s->replay && replay_mode == REPLAY_MODE_RECORD) {
- replay_char_write_event_save(res, offset);
- }
-
- if (res < 0) {
- return res;
- }
- return offset;
-}
-
-int qemu_chr_fe_read_all(CharDriverState *s, uint8_t *buf, int len)
-{
- int offset = 0, counter = 10;
- int res;
-
- if (!s->chr_sync_read) {
- return 0;
- }
-
- if (s->replay && replay_mode == REPLAY_MODE_PLAY) {
- return replay_char_read_all_load(buf);
- }
-
- while (offset < len) {
- retry:
- res = s->chr_sync_read(s, buf + offset, len - offset);
- if (res == -1 && errno == EAGAIN) {
- g_usleep(100);
- goto retry;
- }
-
- if (res == 0) {
- break;
- }
-
- if (res < 0) {
- if (s->replay && replay_mode == REPLAY_MODE_RECORD) {
- replay_char_read_all_save_error(res);
- }
- return res;
- }
-
- offset += res;
-
- if (!counter--) {
- break;
- }
- }
-
- if (s->replay && replay_mode == REPLAY_MODE_RECORD) {
- replay_char_read_all_save_buf(buf, offset);
- }
- return offset;
-}
-
-int qemu_chr_fe_ioctl(CharDriverState *s, int cmd, void *arg)
-{
- int res;
- if (!s->chr_ioctl || s->replay) {
- res = -ENOTSUP;
- } else {
- res = s->chr_ioctl(s, cmd, arg);
- }
-
- return res;
-}
-
-int qemu_chr_be_can_write(CharDriverState *s)
-{
- if (!s->chr_can_read)
- return 0;
- return s->chr_can_read(s->handler_opaque);
-}
-
-void qemu_chr_be_write_impl(CharDriverState *s, uint8_t *buf, int len)
-{
- if (s->chr_read) {
- s->chr_read(s->handler_opaque, buf, len);
- }
-}
-
-void qemu_chr_be_write(CharDriverState *s, uint8_t *buf, int len)
-{
- if (s->replay) {
- if (replay_mode == REPLAY_MODE_PLAY) {
- return;
- }
- replay_chr_be_write(s, buf, len);
- } else {
- qemu_chr_be_write_impl(s, buf, len);
- }
-}
-
-int qemu_chr_fe_get_msgfd(CharDriverState *s)
-{
- int fd;
- int res = (qemu_chr_fe_get_msgfds(s, &fd, 1) == 1) ? fd : -1;
- if (s->replay) {
- fprintf(stderr,
- "Replay: get msgfd is not supported for serial devices yet\n");
- exit(1);
- }
- return res;
-}
-
-int qemu_chr_fe_get_msgfds(CharDriverState *s, int *fds, int len)
-{
- return s->get_msgfds ? s->get_msgfds(s, fds, len) : -1;
-}
-
-int qemu_chr_fe_set_msgfds(CharDriverState *s, int *fds, int num)
-{
- return s->set_msgfds ? s->set_msgfds(s, fds, num) : -1;
-}
-
-int qemu_chr_add_client(CharDriverState *s, int fd)
-{
- return s->chr_add_client ? s->chr_add_client(s, fd) : -1;
-}
-
-void qemu_chr_accept_input(CharDriverState *s)
-{
- if (s->chr_accept_input)
- s->chr_accept_input(s);
- qemu_notify_event();
-}
-
-void qemu_chr_fe_printf(CharDriverState *s, const char *fmt, ...)
-{
- char buf[READ_BUF_LEN];
- va_list ap;
- va_start(ap, fmt);
- vsnprintf(buf, sizeof(buf), fmt, ap);
- qemu_chr_fe_write(s, (uint8_t *)buf, strlen(buf));
- va_end(ap);
-}
-
-static void remove_fd_in_watch(CharDriverState *chr);
-
-void qemu_chr_add_handlers(CharDriverState *s,
- IOCanReadHandler *fd_can_read,
- IOReadHandler *fd_read,
- IOEventHandler *fd_event,
- void *opaque)
-{
- int fe_open;
-
- if (!opaque && !fd_can_read && !fd_read && !fd_event) {
- fe_open = 0;
- remove_fd_in_watch(s);
- } else {
- fe_open = 1;
- }
- s->chr_can_read = fd_can_read;
- s->chr_read = fd_read;
- s->chr_event = fd_event;
- s->handler_opaque = opaque;
- if (fe_open && s->chr_update_read_handler)
- s->chr_update_read_handler(s);
-
- if (!s->explicit_fe_open) {
- qemu_chr_fe_set_open(s, fe_open);
- }
-
- /* We're connecting to an already opened device, so let's make sure we
- also get the open event */
- if (fe_open && s->be_open) {
- qemu_chr_be_generic_open(s);
- }
-}
-
-static int null_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
-{
- return len;
-}
-
-static CharDriverState *qemu_chr_open_null(const char *id,
- ChardevBackend *backend,
- ChardevReturn *ret,
- Error **errp)
-{
- CharDriverState *chr;
- ChardevCommon *common = backend->u.null.data;
-
- chr = qemu_chr_alloc(common, errp);
- if (!chr) {
- return NULL;
- }
- chr->chr_write = null_chr_write;
- chr->explicit_be_open = true;
- return chr;
-}
-
-/* MUX driver for serial I/O splitting */
-#define MAX_MUX 4
-#define MUX_BUFFER_SIZE 32 /* Must be a power of 2. */
-#define MUX_BUFFER_MASK (MUX_BUFFER_SIZE - 1)
-typedef struct {
- IOCanReadHandler *chr_can_read[MAX_MUX];
- IOReadHandler *chr_read[MAX_MUX];
- IOEventHandler *chr_event[MAX_MUX];
- void *ext_opaque[MAX_MUX];
- CharDriverState *drv;
- int focus;
- int mux_cnt;
- int term_got_escape;
- int max_size;
- /* Intermediate input buffer allows to catch escape sequences even if the
- currently active device is not accepting any input - but only until it
- is full as well. */
- unsigned char buffer[MAX_MUX][MUX_BUFFER_SIZE];
- int prod[MAX_MUX];
- int cons[MAX_MUX];
- int timestamps;
-
- /* Protected by the CharDriverState chr_write_lock. */
- int linestart;
- int64_t timestamps_start;
-} MuxDriver;
-
-
-/* Called with chr_write_lock held. */
-static int mux_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
-{
- MuxDriver *d = chr->opaque;
- int ret;
- if (!d->timestamps) {
- ret = qemu_chr_fe_write(d->drv, buf, len);
- } else {
- int i;
-
- ret = 0;
- for (i = 0; i < len; i++) {
- if (d->linestart) {
- char buf1[64];
- int64_t ti;
- int secs;
-
- ti = qemu_clock_get_ms(QEMU_CLOCK_REALTIME);
- if (d->timestamps_start == -1)
- d->timestamps_start = ti;
- ti -= d->timestamps_start;
- secs = ti / 1000;
- snprintf(buf1, sizeof(buf1),
- "[%02d:%02d:%02d.%03d] ",
- secs / 3600,
- (secs / 60) % 60,
- secs % 60,
- (int)(ti % 1000));
- qemu_chr_fe_write(d->drv, (uint8_t *)buf1, strlen(buf1));
- d->linestart = 0;
- }
- ret += qemu_chr_fe_write(d->drv, buf+i, 1);
- if (buf[i] == '\n') {
- d->linestart = 1;
- }
- }
- }
- return ret;
-}
-
-static const char * const mux_help[] = {
- "% h print this help\n\r",
- "% x exit emulator\n\r",
- "% s save disk data back to file (if -snapshot)\n\r",
- "% t toggle console timestamps\n\r",
- "% b send break (magic sysrq)\n\r",
- "% c switch between console and monitor\n\r",
- "% % sends %\n\r",
- NULL
-};
-
-int term_escape_char = 0x01; /* ctrl-a is used for escape */
-static void mux_print_help(CharDriverState *chr)
-{
- int i, j;
- char ebuf[15] = "Escape-Char";
- char cbuf[50] = "\n\r";
-
- if (term_escape_char > 0 && term_escape_char < 26) {
- snprintf(cbuf, sizeof(cbuf), "\n\r");
- snprintf(ebuf, sizeof(ebuf), "C-%c", term_escape_char - 1 + 'a');
- } else {
- snprintf(cbuf, sizeof(cbuf),
- "\n\rEscape-Char set to Ascii: 0x%02x\n\r\n\r",
- term_escape_char);
- }
- qemu_chr_fe_write(chr, (uint8_t *)cbuf, strlen(cbuf));
- for (i = 0; mux_help[i] != NULL; i++) {
- for (j=0; mux_help[i][j] != '\0'; j++) {
- if (mux_help[i][j] == '%')
- qemu_chr_fe_write(chr, (uint8_t *)ebuf, strlen(ebuf));
- else
- qemu_chr_fe_write(chr, (uint8_t *)&mux_help[i][j], 1);
- }
- }
-}
-
-static void mux_chr_send_event(MuxDriver *d, int mux_nr, int event)
-{
- if (d->chr_event[mux_nr])
- d->chr_event[mux_nr](d->ext_opaque[mux_nr], event);
-}
-
-static int mux_proc_byte(CharDriverState *chr, MuxDriver *d, int ch)
-{
- if (d->term_got_escape) {
- d->term_got_escape = 0;
- if (ch == term_escape_char)
- goto send_char;
- switch(ch) {
- case '?':
- case 'h':
- mux_print_help(chr);
- break;
- case 'x':
- {
- const char *term = "QEMU: Terminated\n\r";
- qemu_chr_fe_write(chr, (uint8_t *)term, strlen(term));
- exit(0);
- break;
- }
- case 's':
- blk_commit_all();
- break;
- case 'b':
- qemu_chr_be_event(chr, CHR_EVENT_BREAK);
- break;
- case 'c':
- /* Switch to the next registered device */
- mux_chr_send_event(d, d->focus, CHR_EVENT_MUX_OUT);
- d->focus++;
- if (d->focus >= d->mux_cnt)
- d->focus = 0;
- mux_chr_send_event(d, d->focus, CHR_EVENT_MUX_IN);
- break;
- case 't':
- d->timestamps = !d->timestamps;
- d->timestamps_start = -1;
- d->linestart = 0;
- break;
- }
- } else if (ch == term_escape_char) {
- d->term_got_escape = 1;
- } else {
- send_char:
- return 1;
- }
- return 0;
-}
-
-static void mux_chr_accept_input(CharDriverState *chr)
-{
- MuxDriver *d = chr->opaque;
- int m = d->focus;
-
- while (d->prod[m] != d->cons[m] &&
- d->chr_can_read[m] &&
- d->chr_can_read[m](d->ext_opaque[m])) {
- d->chr_read[m](d->ext_opaque[m],
- &d->buffer[m][d->cons[m]++ & MUX_BUFFER_MASK], 1);
- }
-}
-
-static int mux_chr_can_read(void *opaque)
-{
- CharDriverState *chr = opaque;
- MuxDriver *d = chr->opaque;
- int m = d->focus;
-
- if ((d->prod[m] - d->cons[m]) < MUX_BUFFER_SIZE)
- return 1;
- if (d->chr_can_read[m])
- return d->chr_can_read[m](d->ext_opaque[m]);
- return 0;
-}
-
-static void mux_chr_read(void *opaque, const uint8_t *buf, int size)
-{
- CharDriverState *chr = opaque;
- MuxDriver *d = chr->opaque;
- int m = d->focus;
- int i;
-
- mux_chr_accept_input (opaque);
-
- for(i = 0; i < size; i++)
- if (mux_proc_byte(chr, d, buf[i])) {
- if (d->prod[m] == d->cons[m] &&
- d->chr_can_read[m] &&
- d->chr_can_read[m](d->ext_opaque[m]))
- d->chr_read[m](d->ext_opaque[m], &buf[i], 1);
- else
- d->buffer[m][d->prod[m]++ & MUX_BUFFER_MASK] = buf[i];
- }
-}
-
-static void mux_chr_event(void *opaque, int event)
-{
- CharDriverState *chr = opaque;
- MuxDriver *d = chr->opaque;
- int i;
-
- /* Send the event to all registered listeners */
- for (i = 0; i < d->mux_cnt; i++)
- mux_chr_send_event(d, i, event);
-}
-
-static void mux_chr_update_read_handler(CharDriverState *chr)
-{
- MuxDriver *d = chr->opaque;
-
- if (d->mux_cnt >= MAX_MUX) {
- fprintf(stderr, "Cannot add I/O handlers, MUX array is full\n");
- return;
- }
- d->ext_opaque[d->mux_cnt] = chr->handler_opaque;
- d->chr_can_read[d->mux_cnt] = chr->chr_can_read;
- d->chr_read[d->mux_cnt] = chr->chr_read;
- d->chr_event[d->mux_cnt] = chr->chr_event;
- /* Fix up the real driver with mux routines */
- if (d->mux_cnt == 0) {
- qemu_chr_add_handlers(d->drv, mux_chr_can_read, mux_chr_read,
- mux_chr_event, chr);
- }
- if (d->focus != -1) {
- mux_chr_send_event(d, d->focus, CHR_EVENT_MUX_OUT);
- }
- d->focus = d->mux_cnt;
- d->mux_cnt++;
- mux_chr_send_event(d, d->focus, CHR_EVENT_MUX_IN);
-}
-
-static bool muxes_realized;
-
-/**
- * Called after processing of default and command-line-specified
- * chardevs to deliver CHR_EVENT_OPENED events to any FEs attached
- * to a mux chardev. This is done here to ensure that
- * output/prompts/banners are only displayed for the FE that has
- * focus when initial command-line processing/machine init is
- * completed.
- *
- * After this point, any new FE attached to any new or existing
- * mux will receive CHR_EVENT_OPENED notifications for the BE
- * immediately.
- */
-static void muxes_realize_done(Notifier *notifier, void *unused)
-{
- CharDriverState *chr;
-
- QTAILQ_FOREACH(chr, &chardevs, next) {
- if (chr->is_mux) {
- MuxDriver *d = chr->opaque;
- int i;
-
- /* send OPENED to all already-attached FEs */
- for (i = 0; i < d->mux_cnt; i++) {
- mux_chr_send_event(d, i, CHR_EVENT_OPENED);
- }
- /* mark mux as OPENED so any new FEs will immediately receive
- * OPENED event
- */
- qemu_chr_be_generic_open(chr);
- }
- }
- muxes_realized = true;
-}
-
-static Notifier muxes_realize_notify = {
- .notify = muxes_realize_done,
-};
-
-static GSource *mux_chr_add_watch(CharDriverState *s, GIOCondition cond)
-{
- MuxDriver *d = s->opaque;
- return d->drv->chr_add_watch(d->drv, cond);
-}
-
-static CharDriverState *qemu_chr_open_mux(const char *id,
- ChardevBackend *backend,
- ChardevReturn *ret, Error **errp)
-{
- ChardevMux *mux = backend->u.mux.data;
- CharDriverState *chr, *drv;
- MuxDriver *d;
- ChardevCommon *common = qapi_ChardevMux_base(mux);
-
- drv = qemu_chr_find(mux->chardev);
- if (drv == NULL) {
- error_setg(errp, "mux: base chardev %s not found", mux->chardev);
- return NULL;
- }
-
- chr = qemu_chr_alloc(common, errp);
- if (!chr) {
- return NULL;
- }
- d = g_new0(MuxDriver, 1);
-
- chr->opaque = d;
- d->drv = drv;
- d->focus = -1;
- chr->chr_write = mux_chr_write;
- chr->chr_update_read_handler = mux_chr_update_read_handler;
- chr->chr_accept_input = mux_chr_accept_input;
- /* Frontend guest-open / -close notification is not support with muxes */
- chr->chr_set_fe_open = NULL;
- if (drv->chr_add_watch) {
- chr->chr_add_watch = mux_chr_add_watch;
- }
- /* only default to opened state if we've realized the initial
- * set of muxes
- */
- chr->explicit_be_open = muxes_realized ? 0 : 1;
- chr->is_mux = 1;
-
- return chr;
-}
-
-
-typedef struct IOWatchPoll
-{
- GSource parent;
-
- QIOChannel *ioc;
- GSource *src;
-
- IOCanReadHandler *fd_can_read;
- GSourceFunc fd_read;
- void *opaque;
-} IOWatchPoll;
-
-static IOWatchPoll *io_watch_poll_from_source(GSource *source)
-{
- return container_of(source, IOWatchPoll, parent);
-}
-
-static gboolean io_watch_poll_prepare(GSource *source, gint *timeout_)
-{
- IOWatchPoll *iwp = io_watch_poll_from_source(source);
- bool now_active = iwp->fd_can_read(iwp->opaque) > 0;
- bool was_active = iwp->src != NULL;
- if (was_active == now_active) {
- return FALSE;
- }
-
- if (now_active) {
- iwp->src = qio_channel_create_watch(
- iwp->ioc, G_IO_IN | G_IO_ERR | G_IO_HUP | G_IO_NVAL);
- g_source_set_callback(iwp->src, iwp->fd_read, iwp->opaque, NULL);
- g_source_attach(iwp->src, NULL);
- } else {
- g_source_destroy(iwp->src);
- g_source_unref(iwp->src);
- iwp->src = NULL;
- }
- return FALSE;
-}
-
-static gboolean io_watch_poll_check(GSource *source)
-{
- return FALSE;
-}
-
-static gboolean io_watch_poll_dispatch(GSource *source, GSourceFunc callback,
- gpointer user_data)
-{
- abort();
-}
-
-static void io_watch_poll_finalize(GSource *source)
-{
- /* Due to a glib bug, removing the last reference to a source
- * inside a finalize callback causes recursive locking (and a
- * deadlock). This is not a problem inside other callbacks,
- * including dispatch callbacks, so we call io_remove_watch_poll
- * to remove this source. At this point, iwp->src must
- * be NULL, or we would leak it.
- *
- * This would be solved much more elegantly by child sources,
- * but we support older glib versions that do not have them.
- */
- IOWatchPoll *iwp = io_watch_poll_from_source(source);
- assert(iwp->src == NULL);
-}
-
-static GSourceFuncs io_watch_poll_funcs = {
- .prepare = io_watch_poll_prepare,
- .check = io_watch_poll_check,
- .dispatch = io_watch_poll_dispatch,
- .finalize = io_watch_poll_finalize,
-};
-
-/* Can only be used for read */
-static guint io_add_watch_poll(QIOChannel *ioc,
- IOCanReadHandler *fd_can_read,
- QIOChannelFunc fd_read,
- gpointer user_data)
-{
- IOWatchPoll *iwp;
- int tag;
-
- iwp = (IOWatchPoll *) g_source_new(&io_watch_poll_funcs, sizeof(IOWatchPoll));
- iwp->fd_can_read = fd_can_read;
- iwp->opaque = user_data;
- iwp->ioc = ioc;
- iwp->fd_read = (GSourceFunc) fd_read;
- iwp->src = NULL;
-
- tag = g_source_attach(&iwp->parent, NULL);
- g_source_unref(&iwp->parent);
- return tag;
-}
-
-static void io_remove_watch_poll(guint tag)
-{
- GSource *source;
- IOWatchPoll *iwp;
-
- g_return_if_fail (tag > 0);
-
- source = g_main_context_find_source_by_id(NULL, tag);
- g_return_if_fail (source != NULL);
-
- iwp = io_watch_poll_from_source(source);
- if (iwp->src) {
- g_source_destroy(iwp->src);
- g_source_unref(iwp->src);
- iwp->src = NULL;
- }
- g_source_destroy(&iwp->parent);
-}
-
-static void remove_fd_in_watch(CharDriverState *chr)
-{
- if (chr->fd_in_tag) {
- io_remove_watch_poll(chr->fd_in_tag);
- chr->fd_in_tag = 0;
- }
-}
-
-
-static int io_channel_send_full(QIOChannel *ioc,
- const void *buf, size_t len,
- int *fds, size_t nfds)
-{
- size_t offset = 0;
-
- while (offset < len) {
- ssize_t ret = 0;
- struct iovec iov = { .iov_base = (char *)buf + offset,
- .iov_len = len - offset };
-
- ret = qio_channel_writev_full(
- ioc, &iov, 1,
- fds, nfds, NULL);
- if (ret == QIO_CHANNEL_ERR_BLOCK) {
- if (offset) {
- return offset;
- }
-
- errno = EAGAIN;
- return -1;
- } else if (ret < 0) {
- errno = EINVAL;
- return -1;
- }
-
- offset += ret;
- }
-
- return offset;
-}
-
-
-#ifndef _WIN32
-static int io_channel_send(QIOChannel *ioc, const void *buf, size_t len)
-{
- return io_channel_send_full(ioc, buf, len, NULL, 0);
-}
-
-
-typedef struct FDCharDriver {
- CharDriverState *chr;
- QIOChannel *ioc_in, *ioc_out;
- int max_size;
-} FDCharDriver;
-
-/* Called with chr_write_lock held. */
-static int fd_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
-{
- FDCharDriver *s = chr->opaque;
-
- return io_channel_send(s->ioc_out, buf, len);
-}
-
-static gboolean fd_chr_read(QIOChannel *chan, GIOCondition cond, void *opaque)
-{
- CharDriverState *chr = opaque;
- FDCharDriver *s = chr->opaque;
- int len;
- uint8_t buf[READ_BUF_LEN];
- ssize_t ret;
-
- len = sizeof(buf);
- if (len > s->max_size) {
- len = s->max_size;
- }
- if (len == 0) {
- return TRUE;
- }
-
- ret = qio_channel_read(
- chan, (gchar *)buf, len, NULL);
- if (ret == 0) {
- remove_fd_in_watch(chr);
- qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
- return FALSE;
- }
- if (ret > 0) {
- qemu_chr_be_write(chr, buf, ret);
- }
-
- return TRUE;
-}
-
-static int fd_chr_read_poll(void *opaque)
-{
- CharDriverState *chr = opaque;
- FDCharDriver *s = chr->opaque;
-
- s->max_size = qemu_chr_be_can_write(chr);
- return s->max_size;
-}
-
-static GSource *fd_chr_add_watch(CharDriverState *chr, GIOCondition cond)
-{
- FDCharDriver *s = chr->opaque;
- return qio_channel_create_watch(s->ioc_out, cond);
-}
-
-static void fd_chr_update_read_handler(CharDriverState *chr)
-{
- FDCharDriver *s = chr->opaque;
-
- remove_fd_in_watch(chr);
- if (s->ioc_in) {
- chr->fd_in_tag = io_add_watch_poll(s->ioc_in,
- fd_chr_read_poll,
- fd_chr_read, chr);
- }
-}
-
-static void fd_chr_close(struct CharDriverState *chr)
-{
- FDCharDriver *s = chr->opaque;
-
- remove_fd_in_watch(chr);
- if (s->ioc_in) {
- object_unref(OBJECT(s->ioc_in));
- }
- if (s->ioc_out) {
- object_unref(OBJECT(s->ioc_out));
- }
-
- g_free(s);
- qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
-}
-
-/* open a character device to a unix fd */
-static CharDriverState *qemu_chr_open_fd(int fd_in, int fd_out,
- ChardevCommon *backend, Error **errp)
-{
- CharDriverState *chr;
- FDCharDriver *s;
-
- chr = qemu_chr_alloc(backend, errp);
- if (!chr) {
- return NULL;
- }
- s = g_new0(FDCharDriver, 1);
- s->ioc_in = QIO_CHANNEL(qio_channel_file_new_fd(fd_in));
- s->ioc_out = QIO_CHANNEL(qio_channel_file_new_fd(fd_out));
- qemu_set_nonblock(fd_out);
- s->chr = chr;
- chr->opaque = s;
- chr->chr_add_watch = fd_chr_add_watch;
- chr->chr_write = fd_chr_write;
- chr->chr_update_read_handler = fd_chr_update_read_handler;
- chr->chr_close = fd_chr_close;
-
- return chr;
-}
-
-static CharDriverState *qemu_chr_open_pipe(const char *id,
- ChardevBackend *backend,
- ChardevReturn *ret,
- Error **errp)
-{
- ChardevHostdev *opts = backend->u.pipe.data;
- int fd_in, fd_out;
- char *filename_in;
- char *filename_out;
- const char *filename = opts->device;
- ChardevCommon *common = qapi_ChardevHostdev_base(opts);
-
-
- filename_in = g_strdup_printf("%s.in", filename);
- filename_out = g_strdup_printf("%s.out", filename);
- TFR(fd_in = qemu_open(filename_in, O_RDWR | O_BINARY));
- TFR(fd_out = qemu_open(filename_out, O_RDWR | O_BINARY));
- g_free(filename_in);
- g_free(filename_out);
- if (fd_in < 0 || fd_out < 0) {
- if (fd_in >= 0)
- close(fd_in);
- if (fd_out >= 0)
- close(fd_out);
- TFR(fd_in = fd_out = qemu_open(filename, O_RDWR | O_BINARY));
- if (fd_in < 0) {
- error_setg_file_open(errp, errno, filename);
- return NULL;
- }
- }
- return qemu_chr_open_fd(fd_in, fd_out, common, errp);
-}
-
-/* init terminal so that we can grab keys */
-static struct termios oldtty;
-static int old_fd0_flags;
-static bool stdio_in_use;
-static bool stdio_allow_signal;
-static bool stdio_echo_state;
-
-static void qemu_chr_set_echo_stdio(CharDriverState *chr, bool echo);
-
-static void term_exit(void)
-{
- tcsetattr (0, TCSANOW, &oldtty);
- fcntl(0, F_SETFL, old_fd0_flags);
-}
-
-static void term_stdio_handler(int sig)
-{
- /* restore echo after resume from suspend. */
- qemu_chr_set_echo_stdio(NULL, stdio_echo_state);
-}
-
-static void qemu_chr_set_echo_stdio(CharDriverState *chr, bool echo)
-{
- struct termios tty;
-
- stdio_echo_state = echo;
- tty = oldtty;
- if (!echo) {
- tty.c_iflag &= ~(IGNBRK|BRKINT|PARMRK|ISTRIP
- |INLCR|IGNCR|ICRNL|IXON);
- tty.c_oflag |= OPOST;
- tty.c_lflag &= ~(ECHO|ECHONL|ICANON|IEXTEN);
- tty.c_cflag &= ~(CSIZE|PARENB);
- tty.c_cflag |= CS8;
- tty.c_cc[VMIN] = 1;
- tty.c_cc[VTIME] = 0;
- }
- if (!stdio_allow_signal)
- tty.c_lflag &= ~ISIG;
-
- tcsetattr (0, TCSANOW, &tty);
-}
-
-static void qemu_chr_close_stdio(struct CharDriverState *chr)
-{
- term_exit();
- fd_chr_close(chr);
-}
-
-static CharDriverState *qemu_chr_open_stdio(const char *id,
- ChardevBackend *backend,
- ChardevReturn *ret,
- Error **errp)
-{
- ChardevStdio *opts = backend->u.stdio.data;
- CharDriverState *chr;
- struct sigaction act;
- ChardevCommon *common = qapi_ChardevStdio_base(opts);
-
- if (is_daemonized()) {
- error_setg(errp, "cannot use stdio with -daemonize");
- return NULL;
- }
-
- if (stdio_in_use) {
- error_setg(errp, "cannot use stdio by multiple character devices");
- return NULL;
- }
-
- stdio_in_use = true;
- old_fd0_flags = fcntl(0, F_GETFL);
- tcgetattr(0, &oldtty);
- qemu_set_nonblock(0);
- atexit(term_exit);
-
- memset(&act, 0, sizeof(act));
- act.sa_handler = term_stdio_handler;
- sigaction(SIGCONT, &act, NULL);
-
- chr = qemu_chr_open_fd(0, 1, common, errp);
- chr->chr_close = qemu_chr_close_stdio;
- chr->chr_set_echo = qemu_chr_set_echo_stdio;
- if (opts->has_signal) {
- stdio_allow_signal = opts->signal;
- }
- qemu_chr_fe_set_echo(chr, false);
-
- return chr;
-}
-
-#if defined(__linux__) || defined(__sun__) || defined(__FreeBSD__) \
- || defined(__NetBSD__) || defined(__OpenBSD__) || defined(__DragonFly__) \
- || defined(__GLIBC__)
-
-#define HAVE_CHARDEV_SERIAL 1
-#define HAVE_CHARDEV_PTY 1
-
-typedef struct {
- QIOChannel *ioc;
- int read_bytes;
-
- /* Protected by the CharDriverState chr_write_lock. */
- int connected;
- guint timer_tag;
- guint open_tag;
-} PtyCharDriver;
-
-static void pty_chr_update_read_handler_locked(CharDriverState *chr);
-static void pty_chr_state(CharDriverState *chr, int connected);
-
-static gboolean pty_chr_timer(gpointer opaque)
-{
- struct CharDriverState *chr = opaque;
- PtyCharDriver *s = chr->opaque;
-
- qemu_mutex_lock(&chr->chr_write_lock);
- s->timer_tag = 0;
- s->open_tag = 0;
- if (!s->connected) {
- /* Next poll ... */
- pty_chr_update_read_handler_locked(chr);
- }
- qemu_mutex_unlock(&chr->chr_write_lock);
- return FALSE;
-}
-
-/* Called with chr_write_lock held. */
-static void pty_chr_rearm_timer(CharDriverState *chr, int ms)
-{
- PtyCharDriver *s = chr->opaque;
-
- if (s->timer_tag) {
- g_source_remove(s->timer_tag);
- s->timer_tag = 0;
- }
-
- if (ms == 1000) {
- s->timer_tag = g_timeout_add_seconds(1, pty_chr_timer, chr);
- } else {
- s->timer_tag = g_timeout_add(ms, pty_chr_timer, chr);
- }
-}
-
-/* Called with chr_write_lock held. */
-static void pty_chr_update_read_handler_locked(CharDriverState *chr)
-{
- PtyCharDriver *s = chr->opaque;
- GPollFD pfd;
- int rc;
- QIOChannelFile *fioc = QIO_CHANNEL_FILE(s->ioc);
-
- pfd.fd = fioc->fd;
- pfd.events = G_IO_OUT;
- pfd.revents = 0;
- do {
- rc = g_poll(&pfd, 1, 0);
- } while (rc == -1 && errno == EINTR);
- assert(rc >= 0);
-
- if (pfd.revents & G_IO_HUP) {
- pty_chr_state(chr, 0);
- } else {
- pty_chr_state(chr, 1);
- }
-}
-
-static void pty_chr_update_read_handler(CharDriverState *chr)
-{
- qemu_mutex_lock(&chr->chr_write_lock);
- pty_chr_update_read_handler_locked(chr);
- qemu_mutex_unlock(&chr->chr_write_lock);
-}
-
-/* Called with chr_write_lock held. */
-static int pty_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
-{
- PtyCharDriver *s = chr->opaque;
-
- if (!s->connected) {
- /* guest sends data, check for (re-)connect */
- pty_chr_update_read_handler_locked(chr);
- if (!s->connected) {
- return 0;
- }
- }
- return io_channel_send(s->ioc, buf, len);
-}
-
-static GSource *pty_chr_add_watch(CharDriverState *chr, GIOCondition cond)
-{
- PtyCharDriver *s = chr->opaque;
- if (!s->connected) {
- return NULL;
- }
- return qio_channel_create_watch(s->ioc, cond);
-}
-
-static int pty_chr_read_poll(void *opaque)
-{
- CharDriverState *chr = opaque;
- PtyCharDriver *s = chr->opaque;
-
- s->read_bytes = qemu_chr_be_can_write(chr);
- return s->read_bytes;
-}
-
-static gboolean pty_chr_read(QIOChannel *chan, GIOCondition cond, void *opaque)
-{
- CharDriverState *chr = opaque;
- PtyCharDriver *s = chr->opaque;
- gsize len;
- uint8_t buf[READ_BUF_LEN];
- ssize_t ret;
-
- len = sizeof(buf);
- if (len > s->read_bytes)
- len = s->read_bytes;
- if (len == 0) {
- return TRUE;
- }
- ret = qio_channel_read(s->ioc, (char *)buf, len, NULL);
- if (ret <= 0) {
- pty_chr_state(chr, 0);
- return FALSE;
- } else {
- pty_chr_state(chr, 1);
- qemu_chr_be_write(chr, buf, ret);
- }
- return TRUE;
-}
-
-static gboolean qemu_chr_be_generic_open_func(gpointer opaque)
-{
- CharDriverState *chr = opaque;
- PtyCharDriver *s = chr->opaque;
-
- s->open_tag = 0;
- qemu_chr_be_generic_open(chr);
- return FALSE;
-}
-
-/* Called with chr_write_lock held. */
-static void pty_chr_state(CharDriverState *chr, int connected)
-{
- PtyCharDriver *s = chr->opaque;
-
- if (!connected) {
- if (s->open_tag) {
- g_source_remove(s->open_tag);
- s->open_tag = 0;
- }
- remove_fd_in_watch(chr);
- s->connected = 0;
- /* (re-)connect poll interval for idle guests: once per second.
- * We check more frequently in case the guests sends data to
- * the virtual device linked to our pty. */
- pty_chr_rearm_timer(chr, 1000);
- } else {
- if (s->timer_tag) {
- g_source_remove(s->timer_tag);
- s->timer_tag = 0;
- }
- if (!s->connected) {
- g_assert(s->open_tag == 0);
- s->connected = 1;
- s->open_tag = g_idle_add(qemu_chr_be_generic_open_func, chr);
- }
- if (!chr->fd_in_tag) {
- chr->fd_in_tag = io_add_watch_poll(s->ioc,
- pty_chr_read_poll,
- pty_chr_read, chr);
- }
- }
-}
-
-static void pty_chr_close(struct CharDriverState *chr)
-{
- PtyCharDriver *s = chr->opaque;
-
- qemu_mutex_lock(&chr->chr_write_lock);
- pty_chr_state(chr, 0);
- object_unref(OBJECT(s->ioc));
- if (s->timer_tag) {
- g_source_remove(s->timer_tag);
- s->timer_tag = 0;
- }
- qemu_mutex_unlock(&chr->chr_write_lock);
- g_free(s);
- qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
-}
-
-static CharDriverState *qemu_chr_open_pty(const char *id,
- ChardevBackend *backend,
- ChardevReturn *ret,
- Error **errp)
-{
- CharDriverState *chr;
- PtyCharDriver *s;
- int master_fd, slave_fd;
- char pty_name[PATH_MAX];
- ChardevCommon *common = backend->u.pty.data;
-
- master_fd = qemu_openpty_raw(&slave_fd, pty_name);
- if (master_fd < 0) {
- error_setg_errno(errp, errno, "Failed to create PTY");
- return NULL;
- }
-
- close(slave_fd);
- qemu_set_nonblock(master_fd);
-
- chr = qemu_chr_alloc(common, errp);
- if (!chr) {
- close(master_fd);
- return NULL;
- }
-
- chr->filename = g_strdup_printf("pty:%s", pty_name);
- ret->pty = g_strdup(pty_name);
- ret->has_pty = true;
-
- fprintf(stderr, "char device redirected to %s (label %s)\n",
- pty_name, id);
-
- s = g_new0(PtyCharDriver, 1);
- chr->opaque = s;
- chr->chr_write = pty_chr_write;
- chr->chr_update_read_handler = pty_chr_update_read_handler;
- chr->chr_close = pty_chr_close;
- chr->chr_add_watch = pty_chr_add_watch;
- chr->explicit_be_open = true;
-
- s->ioc = QIO_CHANNEL(qio_channel_file_new_fd(master_fd));
- s->timer_tag = 0;
-
- return chr;
-}
-
-static void tty_serial_init(int fd, int speed,
- int parity, int data_bits, int stop_bits)
-{
- struct termios tty;
- speed_t spd;
-
-#if 0
- printf("tty_serial_init: speed=%d parity=%c data=%d stop=%d\n",
- speed, parity, data_bits, stop_bits);
-#endif
- tcgetattr (fd, &tty);
-
-#define check_speed(val) if (speed <= val) { spd = B##val; break; }
- speed = speed * 10 / 11;
- do {
- check_speed(50);
- check_speed(75);
- check_speed(110);
- check_speed(134);
- check_speed(150);
- check_speed(200);
- check_speed(300);
- check_speed(600);
- check_speed(1200);
- check_speed(1800);
- check_speed(2400);
- check_speed(4800);
- check_speed(9600);
- check_speed(19200);
- check_speed(38400);
- /* Non-Posix values follow. They may be unsupported on some systems. */
- check_speed(57600);
- check_speed(115200);
-#ifdef B230400
- check_speed(230400);
-#endif
-#ifdef B460800
- check_speed(460800);
-#endif
-#ifdef B500000
- check_speed(500000);
-#endif
-#ifdef B576000
- check_speed(576000);
-#endif
-#ifdef B921600
- check_speed(921600);
-#endif
-#ifdef B1000000
- check_speed(1000000);
-#endif
-#ifdef B1152000
- check_speed(1152000);
-#endif
-#ifdef B1500000
- check_speed(1500000);
-#endif
-#ifdef B2000000
- check_speed(2000000);
-#endif
-#ifdef B2500000
- check_speed(2500000);
-#endif
-#ifdef B3000000
- check_speed(3000000);
-#endif
-#ifdef B3500000
- check_speed(3500000);
-#endif
-#ifdef B4000000
- check_speed(4000000);
-#endif
- spd = B115200;
- } while (0);
-
- cfsetispeed(&tty, spd);
- cfsetospeed(&tty, spd);
-
- tty.c_iflag &= ~(IGNBRK|BRKINT|PARMRK|ISTRIP
- |INLCR|IGNCR|ICRNL|IXON);
- tty.c_oflag |= OPOST;
- tty.c_lflag &= ~(ECHO|ECHONL|ICANON|IEXTEN|ISIG);
- tty.c_cflag &= ~(CSIZE|PARENB|PARODD|CRTSCTS|CSTOPB);
- switch(data_bits) {
- default:
- case 8:
- tty.c_cflag |= CS8;
- break;
- case 7:
- tty.c_cflag |= CS7;
- break;
- case 6:
- tty.c_cflag |= CS6;
- break;
- case 5:
- tty.c_cflag |= CS5;
- break;
- }
- switch(parity) {
- default:
- case 'N':
- break;
- case 'E':
- tty.c_cflag |= PARENB;
- break;
- case 'O':
- tty.c_cflag |= PARENB | PARODD;
- break;
- }
- if (stop_bits == 2)
- tty.c_cflag |= CSTOPB;
-
- tcsetattr (fd, TCSANOW, &tty);
-}
-
-static int tty_serial_ioctl(CharDriverState *chr, int cmd, void *arg)
-{
- FDCharDriver *s = chr->opaque;
- QIOChannelFile *fioc = QIO_CHANNEL_FILE(s->ioc_in);
-
- switch(cmd) {
- case CHR_IOCTL_SERIAL_SET_PARAMS:
- {
- QEMUSerialSetParams *ssp = arg;
- tty_serial_init(fioc->fd,
- ssp->speed, ssp->parity,
- ssp->data_bits, ssp->stop_bits);
- }
- break;
- case CHR_IOCTL_SERIAL_SET_BREAK:
- {
- int enable = *(int *)arg;
- if (enable) {
- tcsendbreak(fioc->fd, 1);
- }
- }
- break;
- case CHR_IOCTL_SERIAL_GET_TIOCM:
- {
- int sarg = 0;
- int *targ = (int *)arg;
- ioctl(fioc->fd, TIOCMGET, &sarg);
- *targ = 0;
- if (sarg & TIOCM_CTS)
- *targ |= CHR_TIOCM_CTS;
- if (sarg & TIOCM_CAR)
- *targ |= CHR_TIOCM_CAR;
- if (sarg & TIOCM_DSR)
- *targ |= CHR_TIOCM_DSR;
- if (sarg & TIOCM_RI)
- *targ |= CHR_TIOCM_RI;
- if (sarg & TIOCM_DTR)
- *targ |= CHR_TIOCM_DTR;
- if (sarg & TIOCM_RTS)
- *targ |= CHR_TIOCM_RTS;
- }
- break;
- case CHR_IOCTL_SERIAL_SET_TIOCM:
- {
- int sarg = *(int *)arg;
- int targ = 0;
- ioctl(fioc->fd, TIOCMGET, &targ);
- targ &= ~(CHR_TIOCM_CTS | CHR_TIOCM_CAR | CHR_TIOCM_DSR
- | CHR_TIOCM_RI | CHR_TIOCM_DTR | CHR_TIOCM_RTS);
- if (sarg & CHR_TIOCM_CTS)
- targ |= TIOCM_CTS;
- if (sarg & CHR_TIOCM_CAR)
- targ |= TIOCM_CAR;
- if (sarg & CHR_TIOCM_DSR)
- targ |= TIOCM_DSR;
- if (sarg & CHR_TIOCM_RI)
- targ |= TIOCM_RI;
- if (sarg & CHR_TIOCM_DTR)
- targ |= TIOCM_DTR;
- if (sarg & CHR_TIOCM_RTS)
- targ |= TIOCM_RTS;
- ioctl(fioc->fd, TIOCMSET, &targ);
- }
- break;
- default:
- return -ENOTSUP;
- }
- return 0;
-}
-
-static void qemu_chr_close_tty(CharDriverState *chr)
-{
- fd_chr_close(chr);
-}
-
-static CharDriverState *qemu_chr_open_tty_fd(int fd,
- ChardevCommon *backend,
- Error **errp)
-{
- CharDriverState *chr;
-
- tty_serial_init(fd, 115200, 'N', 8, 1);
- chr = qemu_chr_open_fd(fd, fd, backend, errp);
- chr->chr_ioctl = tty_serial_ioctl;
- chr->chr_close = qemu_chr_close_tty;
- return chr;
-}
-#endif /* __linux__ || __sun__ */
-
-#if defined(__linux__)
-
-#define HAVE_CHARDEV_PARPORT 1
-
-typedef struct {
- int fd;
- int mode;
-} ParallelCharDriver;
-
-static int pp_hw_mode(ParallelCharDriver *s, uint16_t mode)
-{
- if (s->mode != mode) {
- int m = mode;
- if (ioctl(s->fd, PPSETMODE, &m) < 0)
- return 0;
- s->mode = mode;
- }
- return 1;
-}
-
-static int pp_ioctl(CharDriverState *chr, int cmd, void *arg)
-{
- ParallelCharDriver *drv = chr->opaque;
- int fd = drv->fd;
- uint8_t b;
-
- switch(cmd) {
- case CHR_IOCTL_PP_READ_DATA:
- if (ioctl(fd, PPRDATA, &b) < 0)
- return -ENOTSUP;
- *(uint8_t *)arg = b;
- break;
- case CHR_IOCTL_PP_WRITE_DATA:
- b = *(uint8_t *)arg;
- if (ioctl(fd, PPWDATA, &b) < 0)
- return -ENOTSUP;
- break;
- case CHR_IOCTL_PP_READ_CONTROL:
- if (ioctl(fd, PPRCONTROL, &b) < 0)
- return -ENOTSUP;
- /* Linux gives only the lowest bits, and no way to know data
- direction! For better compatibility set the fixed upper
- bits. */
- *(uint8_t *)arg = b | 0xc0;
- break;
- case CHR_IOCTL_PP_WRITE_CONTROL:
- b = *(uint8_t *)arg;
- if (ioctl(fd, PPWCONTROL, &b) < 0)
- return -ENOTSUP;
- break;
- case CHR_IOCTL_PP_READ_STATUS:
- if (ioctl(fd, PPRSTATUS, &b) < 0)
- return -ENOTSUP;
- *(uint8_t *)arg = b;
- break;
- case CHR_IOCTL_PP_DATA_DIR:
- if (ioctl(fd, PPDATADIR, (int *)arg) < 0)
- return -ENOTSUP;
- break;
- case CHR_IOCTL_PP_EPP_READ_ADDR:
- if (pp_hw_mode(drv, IEEE1284_MODE_EPP|IEEE1284_ADDR)) {
- struct ParallelIOArg *parg = arg;
- int n = read(fd, parg->buffer, parg->count);
- if (n != parg->count) {
- return -EIO;
- }
- }
- break;
- case CHR_IOCTL_PP_EPP_READ:
- if (pp_hw_mode(drv, IEEE1284_MODE_EPP)) {
- struct ParallelIOArg *parg = arg;
- int n = read(fd, parg->buffer, parg->count);
- if (n != parg->count) {
- return -EIO;
- }
- }
- break;
- case CHR_IOCTL_PP_EPP_WRITE_ADDR:
- if (pp_hw_mode(drv, IEEE1284_MODE_EPP|IEEE1284_ADDR)) {
- struct ParallelIOArg *parg = arg;
- int n = write(fd, parg->buffer, parg->count);
- if (n != parg->count) {
- return -EIO;
- }
- }
- break;
- case CHR_IOCTL_PP_EPP_WRITE:
- if (pp_hw_mode(drv, IEEE1284_MODE_EPP)) {
- struct ParallelIOArg *parg = arg;
- int n = write(fd, parg->buffer, parg->count);
- if (n != parg->count) {
- return -EIO;
- }
- }
- break;
- default:
- return -ENOTSUP;
- }
- return 0;
-}
-
-static void pp_close(CharDriverState *chr)
-{
- ParallelCharDriver *drv = chr->opaque;
- int fd = drv->fd;
-
- pp_hw_mode(drv, IEEE1284_MODE_COMPAT);
- ioctl(fd, PPRELEASE);
- close(fd);
- g_free(drv);
- qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
-}
-
-static CharDriverState *qemu_chr_open_pp_fd(int fd,
- ChardevCommon *backend,
- Error **errp)
-{
- CharDriverState *chr;
- ParallelCharDriver *drv;
-
- if (ioctl(fd, PPCLAIM) < 0) {
- error_setg_errno(errp, errno, "not a parallel port");
- close(fd);
- return NULL;
- }
-
- chr = qemu_chr_alloc(backend, errp);
- if (!chr) {
- return NULL;
- }
-
- drv = g_new0(ParallelCharDriver, 1);
- chr->opaque = drv;
- chr->chr_write = null_chr_write;
- chr->chr_ioctl = pp_ioctl;
- chr->chr_close = pp_close;
-
- drv->fd = fd;
- drv->mode = IEEE1284_MODE_COMPAT;
-
- return chr;
-}
-#endif /* __linux__ */
-
-#if defined(__FreeBSD__) || defined(__FreeBSD_kernel__) || defined(__DragonFly__)
-
-#define HAVE_CHARDEV_PARPORT 1
-
-static int pp_ioctl(CharDriverState *chr, int cmd, void *arg)
-{
- int fd = (int)(intptr_t)chr->opaque;
- uint8_t b;
-
- switch(cmd) {
- case CHR_IOCTL_PP_READ_DATA:
- if (ioctl(fd, PPIGDATA, &b) < 0)
- return -ENOTSUP;
- *(uint8_t *)arg = b;
- break;
- case CHR_IOCTL_PP_WRITE_DATA:
- b = *(uint8_t *)arg;
- if (ioctl(fd, PPISDATA, &b) < 0)
- return -ENOTSUP;
- break;
- case CHR_IOCTL_PP_READ_CONTROL:
- if (ioctl(fd, PPIGCTRL, &b) < 0)
- return -ENOTSUP;
- *(uint8_t *)arg = b;
- break;
- case CHR_IOCTL_PP_WRITE_CONTROL:
- b = *(uint8_t *)arg;
- if (ioctl(fd, PPISCTRL, &b) < 0)
- return -ENOTSUP;
- break;
- case CHR_IOCTL_PP_READ_STATUS:
- if (ioctl(fd, PPIGSTATUS, &b) < 0)
- return -ENOTSUP;
- *(uint8_t *)arg = b;
- break;
- default:
- return -ENOTSUP;
- }
- return 0;
-}
-
-static CharDriverState *qemu_chr_open_pp_fd(int fd,
- ChardevCommon *backend,
- Error **errp)
-{
- CharDriverState *chr;
-
- chr = qemu_chr_alloc(backend, errp);
- if (!chr) {
- return NULL;
- }
- chr->opaque = (void *)(intptr_t)fd;
- chr->chr_write = null_chr_write;
- chr->chr_ioctl = pp_ioctl;
- chr->explicit_be_open = true;
- return chr;
-}
-#endif
-
-#else /* _WIN32 */
-
-#define HAVE_CHARDEV_SERIAL 1
-
-typedef struct {
- int max_size;
- HANDLE hcom, hrecv, hsend;
- OVERLAPPED orecv;
- BOOL fpipe;
- DWORD len;
-
- /* Protected by the CharDriverState chr_write_lock. */
- OVERLAPPED osend;
-} WinCharState;
-
-typedef struct {
- HANDLE hStdIn;
- HANDLE hInputReadyEvent;
- HANDLE hInputDoneEvent;
- HANDLE hInputThread;
- uint8_t win_stdio_buf;
-} WinStdioCharState;
-
-#define NSENDBUF 2048
-#define NRECVBUF 2048
-#define MAXCONNECT 1
-#define NTIMEOUT 5000
-
-static int win_chr_poll(void *opaque);
-static int win_chr_pipe_poll(void *opaque);
-
-static void win_chr_close(CharDriverState *chr)
-{
- WinCharState *s = chr->opaque;
-
- if (s->hsend) {
- CloseHandle(s->hsend);
- s->hsend = NULL;
- }
- if (s->hrecv) {
- CloseHandle(s->hrecv);
- s->hrecv = NULL;
- }
- if (s->hcom) {
- CloseHandle(s->hcom);
- s->hcom = NULL;
- }
- if (s->fpipe)
- qemu_del_polling_cb(win_chr_pipe_poll, chr);
- else
- qemu_del_polling_cb(win_chr_poll, chr);
-
- qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
-}
-
-static int win_chr_init(CharDriverState *chr, const char *filename, Error **errp)
-{
- WinCharState *s = chr->opaque;
- COMMCONFIG comcfg;
- COMMTIMEOUTS cto = { 0, 0, 0, 0, 0};
- COMSTAT comstat;
- DWORD size;
- DWORD err;
-
- s->hsend = CreateEvent(NULL, TRUE, FALSE, NULL);
- if (!s->hsend) {
- error_setg(errp, "Failed CreateEvent");
- goto fail;
- }
- s->hrecv = CreateEvent(NULL, TRUE, FALSE, NULL);
- if (!s->hrecv) {
- error_setg(errp, "Failed CreateEvent");
- goto fail;
- }
-
- s->hcom = CreateFile(filename, GENERIC_READ|GENERIC_WRITE, 0, NULL,
- OPEN_EXISTING, FILE_FLAG_OVERLAPPED, 0);
- if (s->hcom == INVALID_HANDLE_VALUE) {
- error_setg(errp, "Failed CreateFile (%lu)", GetLastError());
- s->hcom = NULL;
- goto fail;
- }
-
- if (!SetupComm(s->hcom, NRECVBUF, NSENDBUF)) {
- error_setg(errp, "Failed SetupComm");
- goto fail;
- }
-
- ZeroMemory(&comcfg, sizeof(COMMCONFIG));
- size = sizeof(COMMCONFIG);
- GetDefaultCommConfig(filename, &comcfg, &size);
- comcfg.dcb.DCBlength = sizeof(DCB);
- CommConfigDialog(filename, NULL, &comcfg);
-
- if (!SetCommState(s->hcom, &comcfg.dcb)) {
- error_setg(errp, "Failed SetCommState");
- goto fail;
- }
-
- if (!SetCommMask(s->hcom, EV_ERR)) {
- error_setg(errp, "Failed SetCommMask");
- goto fail;
- }
-
- cto.ReadIntervalTimeout = MAXDWORD;
- if (!SetCommTimeouts(s->hcom, &cto)) {
- error_setg(errp, "Failed SetCommTimeouts");
- goto fail;
- }
-
- if (!ClearCommError(s->hcom, &err, &comstat)) {
- error_setg(errp, "Failed ClearCommError");
- goto fail;
- }
- qemu_add_polling_cb(win_chr_poll, chr);
- return 0;
-
- fail:
- win_chr_close(chr);
- return -1;
-}
-
-/* Called with chr_write_lock held. */
-static int win_chr_write(CharDriverState *chr, const uint8_t *buf, int len1)
-{
- WinCharState *s = chr->opaque;
- DWORD len, ret, size, err;
-
- len = len1;
- ZeroMemory(&s->osend, sizeof(s->osend));
- s->osend.hEvent = s->hsend;
- while (len > 0) {
- if (s->hsend)
- ret = WriteFile(s->hcom, buf, len, &size, &s->osend);
- else
- ret = WriteFile(s->hcom, buf, len, &size, NULL);
- if (!ret) {
- err = GetLastError();
- if (err == ERROR_IO_PENDING) {
- ret = GetOverlappedResult(s->hcom, &s->osend, &size, TRUE);
- if (ret) {
- buf += size;
- len -= size;
- } else {
- break;
- }
- } else {
- break;
- }
- } else {
- buf += size;
- len -= size;
- }
- }
- return len1 - len;
-}
-
-static int win_chr_read_poll(CharDriverState *chr)
-{
- WinCharState *s = chr->opaque;
-
- s->max_size = qemu_chr_be_can_write(chr);
- return s->max_size;
-}
-
-static void win_chr_readfile(CharDriverState *chr)
-{
- WinCharState *s = chr->opaque;
- int ret, err;
- uint8_t buf[READ_BUF_LEN];
- DWORD size;
-
- ZeroMemory(&s->orecv, sizeof(s->orecv));
- s->orecv.hEvent = s->hrecv;
- ret = ReadFile(s->hcom, buf, s->len, &size, &s->orecv);
- if (!ret) {
- err = GetLastError();
- if (err == ERROR_IO_PENDING) {
- ret = GetOverlappedResult(s->hcom, &s->orecv, &size, TRUE);
- }
- }
-
- if (size > 0) {
- qemu_chr_be_write(chr, buf, size);
- }
-}
-
-static void win_chr_read(CharDriverState *chr)
-{
- WinCharState *s = chr->opaque;
-
- if (s->len > s->max_size)
- s->len = s->max_size;
- if (s->len == 0)
- return;
-
- win_chr_readfile(chr);
-}
-
-static int win_chr_poll(void *opaque)
-{
- CharDriverState *chr = opaque;
- WinCharState *s = chr->opaque;
- COMSTAT status;
- DWORD comerr;
-
- ClearCommError(s->hcom, &comerr, &status);
- if (status.cbInQue > 0) {
- s->len = status.cbInQue;
- win_chr_read_poll(chr);
- win_chr_read(chr);
- return 1;
- }
- return 0;
-}
-
-static CharDriverState *qemu_chr_open_win_path(const char *filename,
- ChardevCommon *backend,
- Error **errp)
-{
- CharDriverState *chr;
- WinCharState *s;
-
- chr = qemu_chr_alloc(backend, errp);
- if (!chr) {
- return NULL;
- }
- s = g_new0(WinCharState, 1);
- chr->opaque = s;
- chr->chr_write = win_chr_write;
- chr->chr_close = win_chr_close;
-
- if (win_chr_init(chr, filename, errp) < 0) {
- g_free(s);
- qemu_chr_free_common(chr);
- return NULL;
- }
- return chr;
-}
-
-static int win_chr_pipe_poll(void *opaque)
-{
- CharDriverState *chr = opaque;
- WinCharState *s = chr->opaque;
- DWORD size;
-
- PeekNamedPipe(s->hcom, NULL, 0, NULL, &size, NULL);
- if (size > 0) {
- s->len = size;
- win_chr_read_poll(chr);
- win_chr_read(chr);
- return 1;
- }
- return 0;
-}
-
-static int win_chr_pipe_init(CharDriverState *chr, const char *filename,
- Error **errp)
-{
- WinCharState *s = chr->opaque;
- OVERLAPPED ov;
- int ret;
- DWORD size;
- char *openname;
-
- s->fpipe = TRUE;
-
- s->hsend = CreateEvent(NULL, TRUE, FALSE, NULL);
- if (!s->hsend) {
- error_setg(errp, "Failed CreateEvent");
- goto fail;
- }
- s->hrecv = CreateEvent(NULL, TRUE, FALSE, NULL);
- if (!s->hrecv) {
- error_setg(errp, "Failed CreateEvent");
- goto fail;
- }
-
- openname = g_strdup_printf("\\\\.\\pipe\\%s", filename);
- s->hcom = CreateNamedPipe(openname, PIPE_ACCESS_DUPLEX | FILE_FLAG_OVERLAPPED,
- PIPE_TYPE_BYTE | PIPE_READMODE_BYTE |
- PIPE_WAIT,
- MAXCONNECT, NSENDBUF, NRECVBUF, NTIMEOUT, NULL);
- g_free(openname);
- if (s->hcom == INVALID_HANDLE_VALUE) {
- error_setg(errp, "Failed CreateNamedPipe (%lu)", GetLastError());
- s->hcom = NULL;
- goto fail;
- }
-
- ZeroMemory(&ov, sizeof(ov));
- ov.hEvent = CreateEvent(NULL, TRUE, FALSE, NULL);
- ret = ConnectNamedPipe(s->hcom, &ov);
- if (ret) {
- error_setg(errp, "Failed ConnectNamedPipe");
- goto fail;
- }
-
- ret = GetOverlappedResult(s->hcom, &ov, &size, TRUE);
- if (!ret) {
- error_setg(errp, "Failed GetOverlappedResult");
- if (ov.hEvent) {
- CloseHandle(ov.hEvent);
- ov.hEvent = NULL;
- }
- goto fail;
- }
-
- if (ov.hEvent) {
- CloseHandle(ov.hEvent);
- ov.hEvent = NULL;
- }
- qemu_add_polling_cb(win_chr_pipe_poll, chr);
- return 0;
-
- fail:
- win_chr_close(chr);
- return -1;
-}
-
-
-static CharDriverState *qemu_chr_open_pipe(const char *id,
- ChardevBackend *backend,
- ChardevReturn *ret,
- Error **errp)
-{
- ChardevHostdev *opts = backend->u.pipe.data;
- const char *filename = opts->device;
- CharDriverState *chr;
- WinCharState *s;
- ChardevCommon *common = qapi_ChardevHostdev_base(opts);
-
- chr = qemu_chr_alloc(common, errp);
- if (!chr) {
- return NULL;
- }
- s = g_new0(WinCharState, 1);
- chr->opaque = s;
- chr->chr_write = win_chr_write;
- chr->chr_close = win_chr_close;
-
- if (win_chr_pipe_init(chr, filename, errp) < 0) {
- g_free(s);
- qemu_chr_free_common(chr);
- return NULL;
- }
- return chr;
-}
-
-static CharDriverState *qemu_chr_open_win_file(HANDLE fd_out,
- ChardevCommon *backend,
- Error **errp)
-{
- CharDriverState *chr;
- WinCharState *s;
-
- chr = qemu_chr_alloc(backend, errp);
- if (!chr) {
- return NULL;
- }
- s = g_new0(WinCharState, 1);
- s->hcom = fd_out;
- chr->opaque = s;
- chr->chr_write = win_chr_write;
- return chr;
-}
-
-static CharDriverState *qemu_chr_open_win_con(const char *id,
- ChardevBackend *backend,
- ChardevReturn *ret,
- Error **errp)
-{
- ChardevCommon *common = backend->u.console.data;
- return qemu_chr_open_win_file(GetStdHandle(STD_OUTPUT_HANDLE),
- common, errp);
-}
-
-static int win_stdio_write(CharDriverState *chr, const uint8_t *buf, int len)
-{
- HANDLE hStdOut = GetStdHandle(STD_OUTPUT_HANDLE);
- DWORD dwSize;
- int len1;
-
- len1 = len;
-
- while (len1 > 0) {
- if (!WriteFile(hStdOut, buf, len1, &dwSize, NULL)) {
- break;
- }
- buf += dwSize;
- len1 -= dwSize;
- }
-
- return len - len1;
-}
-
-static void win_stdio_wait_func(void *opaque)
-{
- CharDriverState *chr = opaque;
- WinStdioCharState *stdio = chr->opaque;
- INPUT_RECORD buf[4];
- int ret;
- DWORD dwSize;
- int i;
-
- ret = ReadConsoleInput(stdio->hStdIn, buf, ARRAY_SIZE(buf), &dwSize);
-
- if (!ret) {
- /* Avoid error storm */
- qemu_del_wait_object(stdio->hStdIn, NULL, NULL);
- return;
- }
-
- for (i = 0; i < dwSize; i++) {
- KEY_EVENT_RECORD *kev = &buf[i].Event.KeyEvent;
-
- if (buf[i].EventType == KEY_EVENT && kev->bKeyDown) {
- int j;
- if (kev->uChar.AsciiChar != 0) {
- for (j = 0; j < kev->wRepeatCount; j++) {
- if (qemu_chr_be_can_write(chr)) {
- uint8_t c = kev->uChar.AsciiChar;
- qemu_chr_be_write(chr, &c, 1);
- }
- }
- }
- }
- }
-}
-
-static DWORD WINAPI win_stdio_thread(LPVOID param)
-{
- CharDriverState *chr = param;
- WinStdioCharState *stdio = chr->opaque;
- int ret;
- DWORD dwSize;
-
- while (1) {
-
- /* Wait for one byte */
- ret = ReadFile(stdio->hStdIn, &stdio->win_stdio_buf, 1, &dwSize, NULL);
-
- /* Exit in case of error, continue if nothing read */
- if (!ret) {
- break;
- }
- if (!dwSize) {
- continue;
- }
-
- /* Some terminal emulator returns \r\n for Enter, just pass \n */
- if (stdio->win_stdio_buf == '\r') {
- continue;
- }
-
- /* Signal the main thread and wait until the byte was eaten */
- if (!SetEvent(stdio->hInputReadyEvent)) {
- break;
- }
- if (WaitForSingleObject(stdio->hInputDoneEvent, INFINITE)
- != WAIT_OBJECT_0) {
- break;
- }
- }
-
- qemu_del_wait_object(stdio->hInputReadyEvent, NULL, NULL);
- return 0;
-}
-
-static void win_stdio_thread_wait_func(void *opaque)
-{
- CharDriverState *chr = opaque;
- WinStdioCharState *stdio = chr->opaque;
-
- if (qemu_chr_be_can_write(chr)) {
- qemu_chr_be_write(chr, &stdio->win_stdio_buf, 1);
- }
-
- SetEvent(stdio->hInputDoneEvent);
-}
-
-static void qemu_chr_set_echo_win_stdio(CharDriverState *chr, bool echo)
-{
- WinStdioCharState *stdio = chr->opaque;
- DWORD dwMode = 0;
-
- GetConsoleMode(stdio->hStdIn, &dwMode);
-
- if (echo) {
- SetConsoleMode(stdio->hStdIn, dwMode | ENABLE_ECHO_INPUT);
- } else {
- SetConsoleMode(stdio->hStdIn, dwMode & ~ENABLE_ECHO_INPUT);
- }
-}
-
-static void win_stdio_close(CharDriverState *chr)
-{
- WinStdioCharState *stdio = chr->opaque;
-
- if (stdio->hInputReadyEvent != INVALID_HANDLE_VALUE) {
- CloseHandle(stdio->hInputReadyEvent);
- }
- if (stdio->hInputDoneEvent != INVALID_HANDLE_VALUE) {
- CloseHandle(stdio->hInputDoneEvent);
- }
- if (stdio->hInputThread != INVALID_HANDLE_VALUE) {
- TerminateThread(stdio->hInputThread, 0);
- }
-
- g_free(chr->opaque);
- g_free(chr);
-}
-
-static CharDriverState *qemu_chr_open_stdio(const char *id,
- ChardevBackend *backend,
- ChardevReturn *ret,
- Error **errp)
-{
- CharDriverState *chr;
- WinStdioCharState *stdio;
- DWORD dwMode;
- int is_console = 0;
- ChardevCommon *common = qapi_ChardevStdio_base(backend->u.stdio.data);
-
- chr = qemu_chr_alloc(common, errp);
- if (!chr) {
- return NULL;
- }
- stdio = g_new0(WinStdioCharState, 1);
-
- stdio->hStdIn = GetStdHandle(STD_INPUT_HANDLE);
- if (stdio->hStdIn == INVALID_HANDLE_VALUE) {
- error_setg(errp, "cannot open stdio: invalid handle");
- return NULL;
- }
-
- is_console = GetConsoleMode(stdio->hStdIn, &dwMode) != 0;
-
- chr->opaque = stdio;
- chr->chr_write = win_stdio_write;
- chr->chr_close = win_stdio_close;
-
- if (is_console) {
- if (qemu_add_wait_object(stdio->hStdIn,
- win_stdio_wait_func, chr)) {
- error_setg(errp, "qemu_add_wait_object: failed");
- goto err1;
- }
- } else {
- DWORD dwId;
-
- stdio->hInputReadyEvent = CreateEvent(NULL, FALSE, FALSE, NULL);
- stdio->hInputDoneEvent = CreateEvent(NULL, FALSE, FALSE, NULL);
- if (stdio->hInputReadyEvent == INVALID_HANDLE_VALUE
- || stdio->hInputDoneEvent == INVALID_HANDLE_VALUE) {
- error_setg(errp, "cannot create event");
- goto err2;
- }
- if (qemu_add_wait_object(stdio->hInputReadyEvent,
- win_stdio_thread_wait_func, chr)) {
- error_setg(errp, "qemu_add_wait_object: failed");
- goto err2;
- }
- stdio->hInputThread = CreateThread(NULL, 0, win_stdio_thread,
- chr, 0, &dwId);
-
- if (stdio->hInputThread == INVALID_HANDLE_VALUE) {
- error_setg(errp, "cannot create stdio thread");
- goto err3;
- }
- }
-
- dwMode |= ENABLE_LINE_INPUT;
-
- if (is_console) {
- /* set the terminal in raw mode */
- /* ENABLE_QUICK_EDIT_MODE | ENABLE_EXTENDED_FLAGS */
- dwMode |= ENABLE_PROCESSED_INPUT;
- }
-
- SetConsoleMode(stdio->hStdIn, dwMode);
-
- chr->chr_set_echo = qemu_chr_set_echo_win_stdio;
- qemu_chr_fe_set_echo(chr, false);
-
- return chr;
-
-err3:
- qemu_del_wait_object(stdio->hInputReadyEvent, NULL, NULL);
-err2:
- CloseHandle(stdio->hInputReadyEvent);
- CloseHandle(stdio->hInputDoneEvent);
-err1:
- qemu_del_wait_object(stdio->hStdIn, NULL, NULL);
- return NULL;
-}
-#endif /* !_WIN32 */
-
-
-/***********************************************************/
-/* UDP Net console */
-
-typedef struct {
- QIOChannel *ioc;
- uint8_t buf[READ_BUF_LEN];
- int bufcnt;
- int bufptr;
- int max_size;
-} NetCharDriver;
-
-/* Called with chr_write_lock held. */
-static int udp_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
-{
- NetCharDriver *s = chr->opaque;
-
- return qio_channel_write(
- s->ioc, (const char *)buf, len, NULL);
-}
-
-static int udp_chr_read_poll(void *opaque)
-{
- CharDriverState *chr = opaque;
- NetCharDriver *s = chr->opaque;
-
- s->max_size = qemu_chr_be_can_write(chr);
-
- /* If there were any stray characters in the queue process them
- * first
- */
- while (s->max_size > 0 && s->bufptr < s->bufcnt) {
- qemu_chr_be_write(chr, &s->buf[s->bufptr], 1);
- s->bufptr++;
- s->max_size = qemu_chr_be_can_write(chr);
- }
- return s->max_size;
-}
-
-static gboolean udp_chr_read(QIOChannel *chan, GIOCondition cond, void *opaque)
-{
- CharDriverState *chr = opaque;
- NetCharDriver *s = chr->opaque;
- ssize_t ret;
-
- if (s->max_size == 0) {
- return TRUE;
- }
- ret = qio_channel_read(
- s->ioc, (char *)s->buf, sizeof(s->buf), NULL);
- if (ret <= 0) {
- remove_fd_in_watch(chr);
- return FALSE;
- }
- s->bufcnt = ret;
-
- s->bufptr = 0;
- while (s->max_size > 0 && s->bufptr < s->bufcnt) {
- qemu_chr_be_write(chr, &s->buf[s->bufptr], 1);
- s->bufptr++;
- s->max_size = qemu_chr_be_can_write(chr);
- }
-
- return TRUE;
-}
-
-static void udp_chr_update_read_handler(CharDriverState *chr)
-{
- NetCharDriver *s = chr->opaque;
-
- remove_fd_in_watch(chr);
- if (s->ioc) {
- chr->fd_in_tag = io_add_watch_poll(s->ioc,
- udp_chr_read_poll,
- udp_chr_read, chr);
- }
-}
-
-static void udp_chr_close(CharDriverState *chr)
-{
- NetCharDriver *s = chr->opaque;
-
- remove_fd_in_watch(chr);
- if (s->ioc) {
- object_unref(OBJECT(s->ioc));
- }
- g_free(s);
- qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
-}
-
-static CharDriverState *qemu_chr_open_udp(QIOChannelSocket *sioc,
- ChardevCommon *backend,
- Error **errp)
-{
- CharDriverState *chr = NULL;
- NetCharDriver *s = NULL;
-
- chr = qemu_chr_alloc(backend, errp);
- if (!chr) {
- return NULL;
- }
- s = g_new0(NetCharDriver, 1);
-
- s->ioc = QIO_CHANNEL(sioc);
- s->bufcnt = 0;
- s->bufptr = 0;
- chr->opaque = s;
- chr->chr_write = udp_chr_write;
- chr->chr_update_read_handler = udp_chr_update_read_handler;
- chr->chr_close = udp_chr_close;
- /* be isn't opened until we get a connection */
- chr->explicit_be_open = true;
- return chr;
-}
-
-/***********************************************************/
-/* TCP Net console */
-
-typedef struct {
- QIOChannel *ioc; /* Client I/O channel */
- QIOChannelSocket *sioc; /* Client master channel */
- QIOChannelSocket *listen_ioc;
- guint listen_tag;
- QCryptoTLSCreds *tls_creds;
- int connected;
- int max_size;
- int do_telnetopt;
- int do_nodelay;
- int is_unix;
- int *read_msgfds;
- size_t read_msgfds_num;
- int *write_msgfds;
- size_t write_msgfds_num;
-
- SocketAddress *addr;
- bool is_listen;
- bool is_telnet;
-
- guint reconnect_timer;
- int64_t reconnect_time;
- bool connect_err_reported;
-} TCPCharDriver;
-
-static gboolean socket_reconnect_timeout(gpointer opaque);
-
-static void qemu_chr_socket_restart_timer(CharDriverState *chr)
-{
- TCPCharDriver *s = chr->opaque;
- assert(s->connected == 0);
- s->reconnect_timer = g_timeout_add_seconds(s->reconnect_time,
- socket_reconnect_timeout, chr);
-}
-
-static void check_report_connect_error(CharDriverState *chr,
- Error *err)
-{
- TCPCharDriver *s = chr->opaque;
-
- if (!s->connect_err_reported) {
- error_report("Unable to connect character device %s: %s",
- chr->label, error_get_pretty(err));
- s->connect_err_reported = true;
- }
- qemu_chr_socket_restart_timer(chr);
-}
-
-static gboolean tcp_chr_accept(QIOChannel *chan,
- GIOCondition cond,
- void *opaque);
-
-/* Called with chr_write_lock held. */
-static int tcp_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
-{
- TCPCharDriver *s = chr->opaque;
- if (s->connected) {
- int ret = io_channel_send_full(s->ioc, buf, len,
- s->write_msgfds,
- s->write_msgfds_num);
-
- /* free the written msgfds, no matter what */
- if (s->write_msgfds_num) {
- g_free(s->write_msgfds);
- s->write_msgfds = 0;
- s->write_msgfds_num = 0;
- }
-
- return ret;
- } else {
- /* XXX: indicate an error ? */
- return len;
- }
-}
-
-static int tcp_chr_read_poll(void *opaque)
-{
- CharDriverState *chr = opaque;
- TCPCharDriver *s = chr->opaque;
- if (!s->connected)
- return 0;
- s->max_size = qemu_chr_be_can_write(chr);
- return s->max_size;
-}
-
-#define IAC 255
-#define IAC_BREAK 243
-static void tcp_chr_process_IAC_bytes(CharDriverState *chr,
- TCPCharDriver *s,
- uint8_t *buf, int *size)
-{
- /* Handle any telnet client's basic IAC options to satisfy char by
- * char mode with no echo. All IAC options will be removed from
- * the buf and the do_telnetopt variable will be used to track the
- * state of the width of the IAC information.
- *
- * IAC commands come in sets of 3 bytes with the exception of the
- * "IAC BREAK" command and the double IAC.
- */
-
- int i;
- int j = 0;
-
- for (i = 0; i < *size; i++) {
- if (s->do_telnetopt > 1) {
- if ((unsigned char)buf[i] == IAC && s->do_telnetopt == 2) {
- /* Double IAC means send an IAC */
- if (j != i)
- buf[j] = buf[i];
- j++;
- s->do_telnetopt = 1;
- } else {
- if ((unsigned char)buf[i] == IAC_BREAK && s->do_telnetopt == 2) {
- /* Handle IAC break commands by sending a serial break */
- qemu_chr_be_event(chr, CHR_EVENT_BREAK);
- s->do_telnetopt++;
- }
- s->do_telnetopt++;
- }
- if (s->do_telnetopt >= 4) {
- s->do_telnetopt = 1;
- }
- } else {
- if ((unsigned char)buf[i] == IAC) {
- s->do_telnetopt = 2;
- } else {
- if (j != i)
- buf[j] = buf[i];
- j++;
- }
- }
- }
- *size = j;
-}
-
-static int tcp_get_msgfds(CharDriverState *chr, int *fds, int num)
-{
- TCPCharDriver *s = chr->opaque;
- int to_copy = (s->read_msgfds_num < num) ? s->read_msgfds_num : num;
-
- assert(num <= TCP_MAX_FDS);
-
- if (to_copy) {
- int i;
-
- memcpy(fds, s->read_msgfds, to_copy * sizeof(int));
-
- /* Close unused fds */
- for (i = to_copy; i < s->read_msgfds_num; i++) {
- close(s->read_msgfds[i]);
- }
-
- g_free(s->read_msgfds);
- s->read_msgfds = 0;
- s->read_msgfds_num = 0;
- }
-
- return to_copy;
-}
-
-static int tcp_set_msgfds(CharDriverState *chr, int *fds, int num)
-{
- TCPCharDriver *s = chr->opaque;
-
- if (!qio_channel_has_feature(s->ioc,
- QIO_CHANNEL_FEATURE_FD_PASS)) {
- return -1;
- }
- /* clear old pending fd array */
- g_free(s->write_msgfds);
- s->write_msgfds = NULL;
-
- if (num) {
- s->write_msgfds = g_new(int, num);
- memcpy(s->write_msgfds, fds, num * sizeof(int));
- }
-
- s->write_msgfds_num = num;
-
- return 0;
-}
-
-static ssize_t tcp_chr_recv(CharDriverState *chr, char *buf, size_t len)
-{
- TCPCharDriver *s = chr->opaque;
- struct iovec iov = { .iov_base = buf, .iov_len = len };
- int ret;
- size_t i;
- int *msgfds = NULL;
- size_t msgfds_num = 0;
-
- if (qio_channel_has_feature(s->ioc, QIO_CHANNEL_FEATURE_FD_PASS)) {
- ret = qio_channel_readv_full(s->ioc, &iov, 1,
- &msgfds, &msgfds_num,
- NULL);
- } else {
- ret = qio_channel_readv_full(s->ioc, &iov, 1,
- NULL, NULL,
- NULL);
- }
-
- if (ret == QIO_CHANNEL_ERR_BLOCK) {
- errno = EAGAIN;
- ret = -1;
- } else if (ret == -1) {
- errno = EIO;
- }
-
- if (msgfds_num) {
- /* close and clean read_msgfds */
- for (i = 0; i < s->read_msgfds_num; i++) {
- close(s->read_msgfds[i]);
- }
-
- if (s->read_msgfds_num) {
- g_free(s->read_msgfds);
- }
-
- s->read_msgfds = msgfds;
- s->read_msgfds_num = msgfds_num;
- }
-
- for (i = 0; i < s->read_msgfds_num; i++) {
- int fd = s->read_msgfds[i];
- if (fd < 0) {
- continue;
- }
-
- /* O_NONBLOCK is preserved across SCM_RIGHTS so reset it */
- qemu_set_block(fd);
-
-#ifndef MSG_CMSG_CLOEXEC
- qemu_set_cloexec(fd);
-#endif
- }
-
- return ret;
-}
-
-static GSource *tcp_chr_add_watch(CharDriverState *chr, GIOCondition cond)
-{
- TCPCharDriver *s = chr->opaque;
- return qio_channel_create_watch(s->ioc, cond);
-}
-
-static void tcp_chr_disconnect(CharDriverState *chr)
-{
- TCPCharDriver *s = chr->opaque;
-
- if (!s->connected) {
- return;
- }
-
- s->connected = 0;
- if (s->listen_ioc) {
- s->listen_tag = qio_channel_add_watch(
- QIO_CHANNEL(s->listen_ioc), G_IO_IN, tcp_chr_accept, chr, NULL);
- }
- tcp_set_msgfds(chr, NULL, 0);
- remove_fd_in_watch(chr);
- object_unref(OBJECT(s->sioc));
- s->sioc = NULL;
- object_unref(OBJECT(s->ioc));
- s->ioc = NULL;
- g_free(chr->filename);
- chr->filename = SocketAddress_to_str("disconnected:", s->addr,
- s->is_listen, s->is_telnet);
- qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
- if (s->reconnect_time) {
- qemu_chr_socket_restart_timer(chr);
- }
-}
-
-static gboolean tcp_chr_read(QIOChannel *chan, GIOCondition cond, void *opaque)
-{
- CharDriverState *chr = opaque;
- TCPCharDriver *s = chr->opaque;
- uint8_t buf[READ_BUF_LEN];
- int len, size;
-
- if (!s->connected || s->max_size <= 0) {
- return TRUE;
- }
- len = sizeof(buf);
- if (len > s->max_size)
- len = s->max_size;
- size = tcp_chr_recv(chr, (void *)buf, len);
- if (size == 0 || size == -1) {
- /* connection closed */
- tcp_chr_disconnect(chr);
- } else if (size > 0) {
- if (s->do_telnetopt)
- tcp_chr_process_IAC_bytes(chr, s, buf, &size);
- if (size > 0)
- qemu_chr_be_write(chr, buf, size);
- }
-
- return TRUE;
-}
-
-static int tcp_chr_sync_read(CharDriverState *chr, const uint8_t *buf, int len)
-{
- TCPCharDriver *s = chr->opaque;
- int size;
-
- if (!s->connected) {
- return 0;
- }
-
- size = tcp_chr_recv(chr, (void *) buf, len);
- if (size == 0) {
- /* connection closed */
- tcp_chr_disconnect(chr);
- }
-
- return size;
-}
-
-static void tcp_chr_connect(void *opaque)
-{
- CharDriverState *chr = opaque;
- TCPCharDriver *s = chr->opaque;
-
- g_free(chr->filename);
- chr->filename = sockaddr_to_str(
- &s->sioc->localAddr, s->sioc->localAddrLen,
- &s->sioc->remoteAddr, s->sioc->remoteAddrLen,
- s->is_listen, s->is_telnet);
-
- s->connected = 1;
- if (s->ioc) {
- chr->fd_in_tag = io_add_watch_poll(s->ioc,
- tcp_chr_read_poll,
- tcp_chr_read, chr);
- }
- qemu_chr_be_generic_open(chr);
-}
-
-static void tcp_chr_update_read_handler(CharDriverState *chr)
-{
- TCPCharDriver *s = chr->opaque;
-
- if (!s->connected) {
- return;
- }
-
- remove_fd_in_watch(chr);
- if (s->ioc) {
- chr->fd_in_tag = io_add_watch_poll(s->ioc,
- tcp_chr_read_poll,
- tcp_chr_read, chr);
- }
-}
-
-typedef struct {
- CharDriverState *chr;
- char buf[12];
- size_t buflen;
-} TCPCharDriverTelnetInit;
-
-static gboolean tcp_chr_telnet_init_io(QIOChannel *ioc,
- GIOCondition cond G_GNUC_UNUSED,
- gpointer user_data)
-{
- TCPCharDriverTelnetInit *init = user_data;
- ssize_t ret;
-
- ret = qio_channel_write(ioc, init->buf, init->buflen, NULL);
- if (ret < 0) {
- if (ret == QIO_CHANNEL_ERR_BLOCK) {
- ret = 0;
- } else {
- tcp_chr_disconnect(init->chr);
- return FALSE;
- }
- }
- init->buflen -= ret;
-
- if (init->buflen == 0) {
- tcp_chr_connect(init->chr);
- return FALSE;
- }
-
- memmove(init->buf, init->buf + ret, init->buflen);
-
- return TRUE;
-}
-
-static void tcp_chr_telnet_init(CharDriverState *chr)
-{
- TCPCharDriver *s = chr->opaque;
- TCPCharDriverTelnetInit *init =
- g_new0(TCPCharDriverTelnetInit, 1);
- size_t n = 0;
-
- init->chr = chr;
- init->buflen = 12;
-
-#define IACSET(x, a, b, c) \
- do { \
- x[n++] = a; \
- x[n++] = b; \
- x[n++] = c; \
- } while (0)
-
- /* Prep the telnet negotion to put telnet in binary,
- * no echo, single char mode */
- IACSET(init->buf, 0xff, 0xfb, 0x01); /* IAC WILL ECHO */
- IACSET(init->buf, 0xff, 0xfb, 0x03); /* IAC WILL Suppress go ahead */
- IACSET(init->buf, 0xff, 0xfb, 0x00); /* IAC WILL Binary */
- IACSET(init->buf, 0xff, 0xfd, 0x00); /* IAC DO Binary */
-
-#undef IACSET
-
- qio_channel_add_watch(
- s->ioc, G_IO_OUT,
- tcp_chr_telnet_init_io,
- init, NULL);
-}
-
-
-static void tcp_chr_tls_handshake(Object *source,
- Error *err,
- gpointer user_data)
-{
- CharDriverState *chr = user_data;
- TCPCharDriver *s = chr->opaque;
-
- if (err) {
- tcp_chr_disconnect(chr);
- } else {
- if (s->do_telnetopt) {
- tcp_chr_telnet_init(chr);
- } else {
- tcp_chr_connect(chr);
- }
- }
-}
-
-
-static void tcp_chr_tls_init(CharDriverState *chr)
-{
- TCPCharDriver *s = chr->opaque;
- QIOChannelTLS *tioc;
- Error *err = NULL;
-
- if (s->is_listen) {
- tioc = qio_channel_tls_new_server(
- s->ioc, s->tls_creds,
- NULL, /* XXX Use an ACL */
- &err);
- } else {
- tioc = qio_channel_tls_new_client(
- s->ioc, s->tls_creds,
- s->addr->u.inet.data->host,
- &err);
- }
- if (tioc == NULL) {
- error_free(err);
- tcp_chr_disconnect(chr);
- }
- object_unref(OBJECT(s->ioc));
- s->ioc = QIO_CHANNEL(tioc);
-
- qio_channel_tls_handshake(tioc,
- tcp_chr_tls_handshake,
- chr,
- NULL);
-}
-
-
-static int tcp_chr_new_client(CharDriverState *chr, QIOChannelSocket *sioc)
-{
- TCPCharDriver *s = chr->opaque;
- if (s->ioc != NULL) {
- return -1;
- }
-
- s->ioc = QIO_CHANNEL(sioc);
- object_ref(OBJECT(sioc));
- s->sioc = sioc;
- object_ref(OBJECT(sioc));
-
- qio_channel_set_blocking(s->ioc, false, NULL);
-
- if (s->do_nodelay) {
- qio_channel_set_delay(s->ioc, false);
- }
- if (s->listen_tag) {
- g_source_remove(s->listen_tag);
- s->listen_tag = 0;
- }
-
- if (s->tls_creds) {
- tcp_chr_tls_init(chr);
- } else {
- if (s->do_telnetopt) {
- tcp_chr_telnet_init(chr);
- } else {
- tcp_chr_connect(chr);
- }
- }
-
- return 0;
-}
-
-
-static int tcp_chr_add_client(CharDriverState *chr, int fd)
-{
- int ret;
- QIOChannelSocket *sioc;
-
- sioc = qio_channel_socket_new_fd(fd, NULL);
- if (!sioc) {
- return -1;
- }
- ret = tcp_chr_new_client(chr, sioc);
- object_unref(OBJECT(sioc));
- return ret;
-}
-
-static gboolean tcp_chr_accept(QIOChannel *channel,
- GIOCondition cond,
- void *opaque)
-{
- CharDriverState *chr = opaque;
- QIOChannelSocket *sioc;
-
- sioc = qio_channel_socket_accept(QIO_CHANNEL_SOCKET(channel),
- NULL);
- if (!sioc) {
- return TRUE;
- }
-
- tcp_chr_new_client(chr, sioc);
-
- object_unref(OBJECT(sioc));
-
- return TRUE;
-}
-
-static void tcp_chr_close(CharDriverState *chr)
-{
- TCPCharDriver *s = chr->opaque;
- int i;
-
- if (s->reconnect_timer) {
- g_source_remove(s->reconnect_timer);
- s->reconnect_timer = 0;
- }
- qapi_free_SocketAddress(s->addr);
- remove_fd_in_watch(chr);
- if (s->ioc) {
- object_unref(OBJECT(s->ioc));
- }
- if (s->listen_tag) {
- g_source_remove(s->listen_tag);
- s->listen_tag = 0;
- }
- if (s->listen_ioc) {
- object_unref(OBJECT(s->listen_ioc));
- }
- if (s->read_msgfds_num) {
- for (i = 0; i < s->read_msgfds_num; i++) {
- close(s->read_msgfds[i]);
- }
- g_free(s->read_msgfds);
- }
- if (s->tls_creds) {
- object_unref(OBJECT(s->tls_creds));
- }
- if (s->write_msgfds_num) {
- g_free(s->write_msgfds);
- }
- g_free(s);
- qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
-}
-
-
-static void qemu_chr_socket_connected(Object *src, Error *err, void *opaque)
-{
- QIOChannelSocket *sioc = QIO_CHANNEL_SOCKET(src);
- CharDriverState *chr = opaque;
- TCPCharDriver *s = chr->opaque;
-
- if (err) {
- check_report_connect_error(chr, err);
- object_unref(src);
- return;
- }
-
- s->connect_err_reported = false;
- tcp_chr_new_client(chr, sioc);
- object_unref(OBJECT(sioc));
-}
-
-
-/*********************************************************/
-/* Ring buffer chardev */
-
-typedef struct {
- size_t size;
- size_t prod;
- size_t cons;
- uint8_t *cbuf;
-} RingBufCharDriver;
-
-static size_t ringbuf_count(const CharDriverState *chr)
-{
- const RingBufCharDriver *d = chr->opaque;
-
- return d->prod - d->cons;
-}
-
-/* Called with chr_write_lock held. */
-static int ringbuf_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
-{
- RingBufCharDriver *d = chr->opaque;
- int i;
-
- if (!buf || (len < 0)) {
- return -1;
- }
-
- for (i = 0; i < len; i++ ) {
- d->cbuf[d->prod++ & (d->size - 1)] = buf[i];
- if (d->prod - d->cons > d->size) {
- d->cons = d->prod - d->size;
- }
- }
-
- return 0;
-}
-
-static int ringbuf_chr_read(CharDriverState *chr, uint8_t *buf, int len)
-{
- RingBufCharDriver *d = chr->opaque;
- int i;
-
- qemu_mutex_lock(&chr->chr_write_lock);
- for (i = 0; i < len && d->cons != d->prod; i++) {
- buf[i] = d->cbuf[d->cons++ & (d->size - 1)];
- }
- qemu_mutex_unlock(&chr->chr_write_lock);
-
- return i;
-}
-
-static void ringbuf_chr_close(struct CharDriverState *chr)
-{
- RingBufCharDriver *d = chr->opaque;
-
- g_free(d->cbuf);
- g_free(d);
- chr->opaque = NULL;
-}
-
-static CharDriverState *qemu_chr_open_ringbuf(const char *id,
- ChardevBackend *backend,
- ChardevReturn *ret,
- Error **errp)
-{
- ChardevRingbuf *opts = backend->u.ringbuf.data;
- ChardevCommon *common = qapi_ChardevRingbuf_base(opts);
- CharDriverState *chr;
- RingBufCharDriver *d;
-
- chr = qemu_chr_alloc(common, errp);
- if (!chr) {
- return NULL;
- }
- d = g_malloc(sizeof(*d));
-
- d->size = opts->has_size ? opts->size : 65536;
-
- /* The size must be power of 2 */
- if (d->size & (d->size - 1)) {
- error_setg(errp, "size of ringbuf chardev must be power of two");
- goto fail;
- }
-
- d->prod = 0;
- d->cons = 0;
- d->cbuf = g_malloc0(d->size);
-
- chr->opaque = d;
- chr->chr_write = ringbuf_chr_write;
- chr->chr_close = ringbuf_chr_close;
-
- return chr;
-
-fail:
- g_free(d);
- qemu_chr_free_common(chr);
- return NULL;
-}
-
-bool chr_is_ringbuf(const CharDriverState *chr)
-{
- return chr->chr_write == ringbuf_chr_write;
-}
-
-void qmp_ringbuf_write(const char *device, const char *data,
- bool has_format, enum DataFormat format,
- Error **errp)
-{
- CharDriverState *chr;
- const uint8_t *write_data;
- int ret;
- gsize write_count;
-
- chr = qemu_chr_find(device);
- if (!chr) {
- error_setg(errp, "Device '%s' not found", device);
- return;
- }
-
- if (!chr_is_ringbuf(chr)) {
- error_setg(errp,"%s is not a ringbuf device", device);
- return;
- }
-
- if (has_format && (format == DATA_FORMAT_BASE64)) {
- write_data = qbase64_decode(data, -1,
- &write_count,
- errp);
- if (!write_data) {
- return;
- }
- } else {
- write_data = (uint8_t *)data;
- write_count = strlen(data);
- }
-
- ret = ringbuf_chr_write(chr, write_data, write_count);
-
- if (write_data != (uint8_t *)data) {
- g_free((void *)write_data);
- }
-
- if (ret < 0) {
- error_setg(errp, "Failed to write to device %s", device);
- return;
- }
-}
-
-char *qmp_ringbuf_read(const char *device, int64_t size,
- bool has_format, enum DataFormat format,
- Error **errp)
-{
- CharDriverState *chr;
- uint8_t *read_data;
- size_t count;
- char *data;
-
- chr = qemu_chr_find(device);
- if (!chr) {
- error_setg(errp, "Device '%s' not found", device);
- return NULL;
- }
-
- if (!chr_is_ringbuf(chr)) {
- error_setg(errp,"%s is not a ringbuf device", device);
- return NULL;
- }
-
- if (size <= 0) {
- error_setg(errp, "size must be greater than zero");
- return NULL;
- }
-
- count = ringbuf_count(chr);
- size = size > count ? count : size;
- read_data = g_malloc(size + 1);
-
- ringbuf_chr_read(chr, read_data, size);
-
- if (has_format && (format == DATA_FORMAT_BASE64)) {
- data = g_base64_encode(read_data, size);
- g_free(read_data);
- } else {
- /*
- * FIXME should read only complete, valid UTF-8 characters up
- * to @size bytes. Invalid sequences should be replaced by a
- * suitable replacement character. Except when (and only
- * when) ring buffer lost characters since last read, initial
- * continuation characters should be dropped.
- */
- read_data[size] = 0;
- data = (char *)read_data;
- }
-
- return data;
-}
-
-QemuOpts *qemu_chr_parse_compat(const char *label, const char *filename)
-{
- char host[65], port[33], width[8], height[8];
- int pos;
- const char *p;
- QemuOpts *opts;
- Error *local_err = NULL;
-
- opts = qemu_opts_create(qemu_find_opts("chardev"), label, 1, &local_err);
- if (local_err) {
- error_report_err(local_err);
- return NULL;
- }
-
- if (strstart(filename, "mon:", &p)) {
- filename = p;
- qemu_opt_set(opts, "mux", "on", &error_abort);
- if (strcmp(filename, "stdio") == 0) {
- /* Monitor is muxed to stdio: do not exit on Ctrl+C by default
- * but pass it to the guest. Handle this only for compat syntax,
- * for -chardev syntax we have special option for this.
- * This is what -nographic did, redirecting+muxing serial+monitor
- * to stdio causing Ctrl+C to be passed to guest. */
- qemu_opt_set(opts, "signal", "off", &error_abort);
- }
- }
-
- if (strcmp(filename, "null") == 0 ||
- strcmp(filename, "pty") == 0 ||
- strcmp(filename, "msmouse") == 0 ||
- strcmp(filename, "braille") == 0 ||
- strcmp(filename, "testdev") == 0 ||
- strcmp(filename, "stdio") == 0) {
- qemu_opt_set(opts, "backend", filename, &error_abort);
- return opts;
- }
- if (strstart(filename, "vc", &p)) {
- qemu_opt_set(opts, "backend", "vc", &error_abort);
- if (*p == ':') {
- if (sscanf(p+1, "%7[0-9]x%7[0-9]", width, height) == 2) {
- /* pixels */
- qemu_opt_set(opts, "width", width, &error_abort);
- qemu_opt_set(opts, "height", height, &error_abort);
- } else if (sscanf(p+1, "%7[0-9]Cx%7[0-9]C", width, height) == 2) {
- /* chars */
- qemu_opt_set(opts, "cols", width, &error_abort);
- qemu_opt_set(opts, "rows", height, &error_abort);
- } else {
- goto fail;
- }
- }
- return opts;
- }
- if (strcmp(filename, "con:") == 0) {
- qemu_opt_set(opts, "backend", "console", &error_abort);
- return opts;
- }
- if (strstart(filename, "COM", NULL)) {
- qemu_opt_set(opts, "backend", "serial", &error_abort);
- qemu_opt_set(opts, "path", filename, &error_abort);
- return opts;
- }
- if (strstart(filename, "file:", &p)) {
- qemu_opt_set(opts, "backend", "file", &error_abort);
- qemu_opt_set(opts, "path", p, &error_abort);
- return opts;
- }
- if (strstart(filename, "pipe:", &p)) {
- qemu_opt_set(opts, "backend", "pipe", &error_abort);
- qemu_opt_set(opts, "path", p, &error_abort);
- return opts;
- }
- if (strstart(filename, "tcp:", &p) ||
- strstart(filename, "telnet:", &p)) {
- if (sscanf(p, "%64[^:]:%32[^,]%n", host, port, &pos) < 2) {
- host[0] = 0;
- if (sscanf(p, ":%32[^,]%n", port, &pos) < 1)
- goto fail;
- }
- qemu_opt_set(opts, "backend", "socket", &error_abort);
- qemu_opt_set(opts, "host", host, &error_abort);
- qemu_opt_set(opts, "port", port, &error_abort);
- if (p[pos] == ',') {
- qemu_opts_do_parse(opts, p+pos+1, NULL, &local_err);
- if (local_err) {
- error_report_err(local_err);
- goto fail;
- }
- }
- if (strstart(filename, "telnet:", &p))
- qemu_opt_set(opts, "telnet", "on", &error_abort);
- return opts;
- }
- if (strstart(filename, "udp:", &p)) {
- qemu_opt_set(opts, "backend", "udp", &error_abort);
- if (sscanf(p, "%64[^:]:%32[^@,]%n", host, port, &pos) < 2) {
- host[0] = 0;
- if (sscanf(p, ":%32[^@,]%n", port, &pos) < 1) {
- goto fail;
- }
- }
- qemu_opt_set(opts, "host", host, &error_abort);
- qemu_opt_set(opts, "port", port, &error_abort);
- if (p[pos] == '@') {
- p += pos + 1;
- if (sscanf(p, "%64[^:]:%32[^,]%n", host, port, &pos) < 2) {
- host[0] = 0;
- if (sscanf(p, ":%32[^,]%n", port, &pos) < 1) {
- goto fail;
- }
- }
- qemu_opt_set(opts, "localaddr", host, &error_abort);
- qemu_opt_set(opts, "localport", port, &error_abort);
- }
- return opts;
- }
- if (strstart(filename, "unix:", &p)) {
- qemu_opt_set(opts, "backend", "socket", &error_abort);
- qemu_opts_do_parse(opts, p, "path", &local_err);
- if (local_err) {
- error_report_err(local_err);
- goto fail;
- }
- return opts;
- }
- if (strstart(filename, "/dev/parport", NULL) ||
- strstart(filename, "/dev/ppi", NULL)) {
- qemu_opt_set(opts, "backend", "parport", &error_abort);
- qemu_opt_set(opts, "path", filename, &error_abort);
- return opts;
- }
- if (strstart(filename, "/dev/", NULL)) {
- qemu_opt_set(opts, "backend", "tty", &error_abort);
- qemu_opt_set(opts, "path", filename, &error_abort);
- return opts;
- }
-
-fail:
- qemu_opts_del(opts);
- return NULL;
-}
-
-void qemu_chr_parse_common(QemuOpts *opts, ChardevCommon *backend)
-{
- const char *logfile = qemu_opt_get(opts, "logfile");
-
- backend->has_logfile = logfile != NULL;
- backend->logfile = logfile ? g_strdup(logfile) : NULL;
-
- backend->has_logappend = true;
- backend->logappend = qemu_opt_get_bool(opts, "logappend", false);
-}
-
-
-static void qemu_chr_parse_file_out(QemuOpts *opts, ChardevBackend *backend,
- Error **errp)
-{
- const char *path = qemu_opt_get(opts, "path");
- ChardevFile *file;
-
- if (path == NULL) {
- error_setg(errp, "chardev: file: no filename given");
- return;
- }
- file = backend->u.file.data = g_new0(ChardevFile, 1);
- qemu_chr_parse_common(opts, qapi_ChardevFile_base(file));
- file->out = g_strdup(path);
-
- file->has_append = true;
- file->append = qemu_opt_get_bool(opts, "append", false);
-}
-
-static void qemu_chr_parse_stdio(QemuOpts *opts, ChardevBackend *backend,
- Error **errp)
-{
- ChardevStdio *stdio;
-
- stdio = backend->u.stdio.data = g_new0(ChardevStdio, 1);
- qemu_chr_parse_common(opts, qapi_ChardevStdio_base(stdio));
- stdio->has_signal = true;
- stdio->signal = qemu_opt_get_bool(opts, "signal", true);
-}
-
-#ifdef HAVE_CHARDEV_SERIAL
-static void qemu_chr_parse_serial(QemuOpts *opts, ChardevBackend *backend,
- Error **errp)
-{
- const char *device = qemu_opt_get(opts, "path");
- ChardevHostdev *serial;
-
- if (device == NULL) {
- error_setg(errp, "chardev: serial/tty: no device path given");
- return;
- }
- serial = backend->u.serial.data = g_new0(ChardevHostdev, 1);
- qemu_chr_parse_common(opts, qapi_ChardevHostdev_base(serial));
- serial->device = g_strdup(device);
-}
-#endif
-
-#ifdef HAVE_CHARDEV_PARPORT
-static void qemu_chr_parse_parallel(QemuOpts *opts, ChardevBackend *backend,
- Error **errp)
-{
- const char *device = qemu_opt_get(opts, "path");
- ChardevHostdev *parallel;
-
- if (device == NULL) {
- error_setg(errp, "chardev: parallel: no device path given");
- return;
- }
- parallel = backend->u.parallel.data = g_new0(ChardevHostdev, 1);
- qemu_chr_parse_common(opts, qapi_ChardevHostdev_base(parallel));
- parallel->device = g_strdup(device);
-}
-#endif
-
-static void qemu_chr_parse_pipe(QemuOpts *opts, ChardevBackend *backend,
- Error **errp)
-{
- const char *device = qemu_opt_get(opts, "path");
- ChardevHostdev *dev;
-
- if (device == NULL) {
- error_setg(errp, "chardev: pipe: no device path given");
- return;
- }
- dev = backend->u.pipe.data = g_new0(ChardevHostdev, 1);
- qemu_chr_parse_common(opts, qapi_ChardevHostdev_base(dev));
- dev->device = g_strdup(device);
-}
-
-static void qemu_chr_parse_ringbuf(QemuOpts *opts, ChardevBackend *backend,
- Error **errp)
-{
- int val;
- ChardevRingbuf *ringbuf;
-
- ringbuf = backend->u.ringbuf.data = g_new0(ChardevRingbuf, 1);
- qemu_chr_parse_common(opts, qapi_ChardevRingbuf_base(ringbuf));
-
- val = qemu_opt_get_size(opts, "size", 0);
- if (val != 0) {
- ringbuf->has_size = true;
- ringbuf->size = val;
- }
-}
-
-static void qemu_chr_parse_mux(QemuOpts *opts, ChardevBackend *backend,
- Error **errp)
-{
- const char *chardev = qemu_opt_get(opts, "chardev");
- ChardevMux *mux;
-
- if (chardev == NULL) {
- error_setg(errp, "chardev: mux: no chardev given");
- return;
- }
- mux = backend->u.mux.data = g_new0(ChardevMux, 1);
- qemu_chr_parse_common(opts, qapi_ChardevMux_base(mux));
- mux->chardev = g_strdup(chardev);
-}
-
-static void qemu_chr_parse_socket(QemuOpts *opts, ChardevBackend *backend,
- Error **errp)
-{
- bool is_listen = qemu_opt_get_bool(opts, "server", false);
- bool is_waitconnect = is_listen && qemu_opt_get_bool(opts, "wait", true);
- bool is_telnet = qemu_opt_get_bool(opts, "telnet", false);
- bool do_nodelay = !qemu_opt_get_bool(opts, "delay", true);
- int64_t reconnect = qemu_opt_get_number(opts, "reconnect", 0);
- const char *path = qemu_opt_get(opts, "path");
- const char *host = qemu_opt_get(opts, "host");
- const char *port = qemu_opt_get(opts, "port");
- const char *tls_creds = qemu_opt_get(opts, "tls-creds");
- SocketAddress *addr;
- ChardevSocket *sock;
-
- if (!path) {
- if (!host) {
- error_setg(errp, "chardev: socket: no host given");
- return;
- }
- if (!port) {
- error_setg(errp, "chardev: socket: no port given");
- return;
- }
- } else {
- if (tls_creds) {
- error_setg(errp, "TLS can only be used over TCP socket");
- return;
- }
- }
-
- sock = backend->u.socket.data = g_new0(ChardevSocket, 1);
- qemu_chr_parse_common(opts, qapi_ChardevSocket_base(sock));
-
- sock->has_nodelay = true;
- sock->nodelay = do_nodelay;
- sock->has_server = true;
- sock->server = is_listen;
- sock->has_telnet = true;
- sock->telnet = is_telnet;
- sock->has_wait = true;
- sock->wait = is_waitconnect;
- sock->has_reconnect = true;
- sock->reconnect = reconnect;
- sock->tls_creds = g_strdup(tls_creds);
-
- addr = g_new0(SocketAddress, 1);
- if (path) {
- UnixSocketAddress *q_unix;
- addr->type = SOCKET_ADDRESS_KIND_UNIX;
- q_unix = addr->u.q_unix.data = g_new0(UnixSocketAddress, 1);
- q_unix->path = g_strdup(path);
- } else {
- addr->type = SOCKET_ADDRESS_KIND_INET;
- addr->u.inet.data = g_new(InetSocketAddress, 1);
- *addr->u.inet.data = (InetSocketAddress) {
- .host = g_strdup(host),
- .port = g_strdup(port),
- .has_to = qemu_opt_get(opts, "to"),
- .to = qemu_opt_get_number(opts, "to", 0),
- .has_ipv4 = qemu_opt_get(opts, "ipv4"),
- .ipv4 = qemu_opt_get_bool(opts, "ipv4", 0),
- .has_ipv6 = qemu_opt_get(opts, "ipv6"),
- .ipv6 = qemu_opt_get_bool(opts, "ipv6", 0),
- };
- }
- sock->addr = addr;
-}
-
-static void qemu_chr_parse_udp(QemuOpts *opts, ChardevBackend *backend,
- Error **errp)
-{
- const char *host = qemu_opt_get(opts, "host");
- const char *port = qemu_opt_get(opts, "port");
- const char *localaddr = qemu_opt_get(opts, "localaddr");
- const char *localport = qemu_opt_get(opts, "localport");
- bool has_local = false;
- SocketAddress *addr;
- ChardevUdp *udp;
-
- if (host == NULL || strlen(host) == 0) {
- host = "localhost";
- }
- if (port == NULL || strlen(port) == 0) {
- error_setg(errp, "chardev: udp: remote port not specified");
- return;
- }
- if (localport == NULL || strlen(localport) == 0) {
- localport = "0";
- } else {
- has_local = true;
- }
- if (localaddr == NULL || strlen(localaddr) == 0) {
- localaddr = "";
- } else {
- has_local = true;
- }
-
- udp = backend->u.udp.data = g_new0(ChardevUdp, 1);
- qemu_chr_parse_common(opts, qapi_ChardevUdp_base(udp));
-
- addr = g_new0(SocketAddress, 1);
- addr->type = SOCKET_ADDRESS_KIND_INET;
- addr->u.inet.data = g_new(InetSocketAddress, 1);
- *addr->u.inet.data = (InetSocketAddress) {
- .host = g_strdup(host),
- .port = g_strdup(port),
- .has_ipv4 = qemu_opt_get(opts, "ipv4"),
- .ipv4 = qemu_opt_get_bool(opts, "ipv4", 0),
- .has_ipv6 = qemu_opt_get(opts, "ipv6"),
- .ipv6 = qemu_opt_get_bool(opts, "ipv6", 0),
- };
- udp->remote = addr;
-
- if (has_local) {
- udp->has_local = true;
- addr = g_new0(SocketAddress, 1);
- addr->type = SOCKET_ADDRESS_KIND_INET;
- addr->u.inet.data = g_new(InetSocketAddress, 1);
- *addr->u.inet.data = (InetSocketAddress) {
- .host = g_strdup(localaddr),
- .port = g_strdup(localport),
- };
- udp->local = addr;
- }
-}
-
-typedef struct CharDriver {
- const char *name;
- ChardevBackendKind kind;
- void (*parse)(QemuOpts *opts, ChardevBackend *backend, Error **errp);
- CharDriverState *(*create)(const char *id, ChardevBackend *backend,
- ChardevReturn *ret, Error **errp);
-} CharDriver;
-
-static GSList *backends;
-
-void register_char_driver(const char *name, ChardevBackendKind kind,
- void (*parse)(QemuOpts *opts, ChardevBackend *backend, Error **errp),
- CharDriverState *(*create)(const char *id, ChardevBackend *backend,
- ChardevReturn *ret, Error **errp))
-{
- CharDriver *s;
-
- s = g_malloc0(sizeof(*s));
- s->name = g_strdup(name);
- s->kind = kind;
- s->parse = parse;
- s->create = create;
-
- backends = g_slist_append(backends, s);
-}
-
-CharDriverState *qemu_chr_new_from_opts(QemuOpts *opts,
- void (*init)(struct CharDriverState *s),
- Error **errp)
-{
- Error *local_err = NULL;
- CharDriver *cd;
- CharDriverState *chr;
- GSList *i;
- ChardevReturn *ret = NULL;
- ChardevBackend *backend;
- const char *id = qemu_opts_id(opts);
- char *bid = NULL;
-
- if (id == NULL) {
- error_setg(errp, "chardev: no id specified");
- goto err;
- }
-
- if (qemu_opt_get(opts, "backend") == NULL) {
- error_setg(errp, "chardev: \"%s\" missing backend",
- qemu_opts_id(opts));
- goto err;
- }
- for (i = backends; i; i = i->next) {
- cd = i->data;
-
- if (strcmp(cd->name, qemu_opt_get(opts, "backend")) == 0) {
- break;
- }
- }
- if (i == NULL) {
- error_setg(errp, "chardev: backend \"%s\" not found",
- qemu_opt_get(opts, "backend"));
- goto err;
- }
-
- backend = g_new0(ChardevBackend, 1);
-
- if (qemu_opt_get_bool(opts, "mux", 0)) {
- bid = g_strdup_printf("%s-base", id);
- }
-
- chr = NULL;
- backend->type = cd->kind;
- if (cd->parse) {
- cd->parse(opts, backend, &local_err);
- if (local_err) {
- error_propagate(errp, local_err);
- goto qapi_out;
- }
- } else {
- ChardevCommon *cc = g_new0(ChardevCommon, 1);
- qemu_chr_parse_common(opts, cc);
- backend->u.null.data = cc; /* Any ChardevCommon member would work */
- }
-
- ret = qmp_chardev_add(bid ? bid : id, backend, errp);
- if (!ret) {
- goto qapi_out;
- }
-
- if (bid) {
- qapi_free_ChardevBackend(backend);
- qapi_free_ChardevReturn(ret);
- backend = g_new0(ChardevBackend, 1);
- backend->u.mux.data = g_new0(ChardevMux, 1);
- backend->type = CHARDEV_BACKEND_KIND_MUX;
- backend->u.mux.data->chardev = g_strdup(bid);
- ret = qmp_chardev_add(id, backend, errp);
- if (!ret) {
- chr = qemu_chr_find(bid);
- qemu_chr_delete(chr);
- chr = NULL;
- goto qapi_out;
- }
- }
-
- chr = qemu_chr_find(id);
- chr->opts = opts;
-
-qapi_out:
- qapi_free_ChardevBackend(backend);
- qapi_free_ChardevReturn(ret);
- g_free(bid);
- return chr;
-
-err:
- qemu_opts_del(opts);
- return NULL;
-}
-
-CharDriverState *qemu_chr_new_noreplay(const char *label, const char *filename,
- void (*init)(struct CharDriverState *s))
-{
- const char *p;
- CharDriverState *chr;
- QemuOpts *opts;
- Error *err = NULL;
-
- if (strstart(filename, "chardev:", &p)) {
- return qemu_chr_find(p);
- }
-
- opts = qemu_chr_parse_compat(label, filename);
- if (!opts)
- return NULL;
-
- chr = qemu_chr_new_from_opts(opts, init, &err);
- if (err) {
- error_report_err(err);
- }
- if (chr && qemu_opt_get_bool(opts, "mux", 0)) {
- qemu_chr_fe_claim_no_fail(chr);
- monitor_init(chr, MONITOR_USE_READLINE);
- }
- return chr;
-}
-
-CharDriverState *qemu_chr_new(const char *label, const char *filename, void (*init)(struct CharDriverState *s))
-{
- CharDriverState *chr;
- chr = qemu_chr_new_noreplay(label, filename, init);
- if (chr) {
- chr->replay = replay_mode != REPLAY_MODE_NONE;
- if (chr->replay && chr->chr_ioctl) {
- fprintf(stderr,
- "Replay: ioctl is not supported for serial devices yet\n");
- }
- replay_register_char_driver(chr);
- }
- return chr;
-}
-
-void qemu_chr_fe_set_echo(struct CharDriverState *chr, bool echo)
-{
- if (chr->chr_set_echo) {
- chr->chr_set_echo(chr, echo);
- }
-}
-
-void qemu_chr_fe_set_open(struct CharDriverState *chr, int fe_open)
-{
- if (chr->fe_open == fe_open) {
- return;
- }
- chr->fe_open = fe_open;
- if (chr->chr_set_fe_open) {
- chr->chr_set_fe_open(chr, fe_open);
- }
-}
-
-void qemu_chr_fe_event(struct CharDriverState *chr, int event)
-{
- if (chr->chr_fe_event) {
- chr->chr_fe_event(chr, event);
- }
-}
-
-int qemu_chr_fe_add_watch(CharDriverState *s, GIOCondition cond,
- GIOFunc func, void *user_data)
-{
- GSource *src;
- guint tag;
-
- if (s->chr_add_watch == NULL) {
- return -ENOSYS;
- }
-
- src = s->chr_add_watch(s, cond);
- if (!src) {
- return -EINVAL;
- }
-
- g_source_set_callback(src, (GSourceFunc)func, user_data, NULL);
- tag = g_source_attach(src, NULL);
- g_source_unref(src);
-
- return tag;
-}
-
-int qemu_chr_fe_claim(CharDriverState *s)
-{
- if (s->avail_connections < 1) {
- return -1;
- }
- s->avail_connections--;
- return 0;
-}
-
-void qemu_chr_fe_claim_no_fail(CharDriverState *s)
-{
- if (qemu_chr_fe_claim(s) != 0) {
- fprintf(stderr, "%s: error chardev \"%s\" already used\n",
- __func__, s->label);
- exit(1);
- }
-}
-
-void qemu_chr_fe_release(CharDriverState *s)
-{
- s->avail_connections++;
-}
-
-static void qemu_chr_free_common(CharDriverState *chr)
-{
- g_free(chr->filename);
- g_free(chr->label);
- qemu_opts_del(chr->opts);
- if (chr->logfd != -1) {
- close(chr->logfd);
- }
- qemu_mutex_destroy(&chr->chr_write_lock);
- g_free(chr);
-}
-
-void qemu_chr_free(CharDriverState *chr)
-{
- if (chr->chr_close) {
- chr->chr_close(chr);
- }
- qemu_chr_free_common(chr);
-}
-
-void qemu_chr_delete(CharDriverState *chr)
-{
- QTAILQ_REMOVE(&chardevs, chr, next);
- qemu_chr_free(chr);
-}
-
-ChardevInfoList *qmp_query_chardev(Error **errp)
-{
- ChardevInfoList *chr_list = NULL;
- CharDriverState *chr;
-
- QTAILQ_FOREACH(chr, &chardevs, next) {
- ChardevInfoList *info = g_malloc0(sizeof(*info));
- info->value = g_malloc0(sizeof(*info->value));
- info->value->label = g_strdup(chr->label);
- info->value->filename = g_strdup(chr->filename);
- info->value->frontend_open = chr->fe_open;
-
- info->next = chr_list;
- chr_list = info;
- }
-
- return chr_list;
-}
-
-ChardevBackendInfoList *qmp_query_chardev_backends(Error **errp)
-{
- ChardevBackendInfoList *backend_list = NULL;
- CharDriver *c = NULL;
- GSList *i = NULL;
-
- for (i = backends; i; i = i->next) {
- ChardevBackendInfoList *info = g_malloc0(sizeof(*info));
- c = i->data;
- info->value = g_malloc0(sizeof(*info->value));
- info->value->name = g_strdup(c->name);
-
- info->next = backend_list;
- backend_list = info;
- }
-
- return backend_list;
-}
-
-CharDriverState *qemu_chr_find(const char *name)
-{
- CharDriverState *chr;
-
- QTAILQ_FOREACH(chr, &chardevs, next) {
- if (strcmp(chr->label, name) != 0)
- continue;
- return chr;
- }
- return NULL;
-}
-
-/* Get a character (serial) device interface. */
-CharDriverState *qemu_char_get_next_serial(void)
-{
- static int next_serial;
- CharDriverState *chr;
-
- /* FIXME: This function needs to go away: use chardev properties! */
-
- while (next_serial < MAX_SERIAL_PORTS && serial_hds[next_serial]) {
- chr = serial_hds[next_serial++];
- qemu_chr_fe_claim_no_fail(chr);
- return chr;
- }
- return NULL;
-}
-
-QemuOptsList qemu_chardev_opts = {
- .name = "chardev",
- .implied_opt_name = "backend",
- .head = QTAILQ_HEAD_INITIALIZER(qemu_chardev_opts.head),
- .desc = {
- {
- .name = "backend",
- .type = QEMU_OPT_STRING,
- },{
- .name = "path",
- .type = QEMU_OPT_STRING,
- },{
- .name = "host",
- .type = QEMU_OPT_STRING,
- },{
- .name = "port",
- .type = QEMU_OPT_STRING,
- },{
- .name = "localaddr",
- .type = QEMU_OPT_STRING,
- },{
- .name = "localport",
- .type = QEMU_OPT_STRING,
- },{
- .name = "to",
- .type = QEMU_OPT_NUMBER,
- },{
- .name = "ipv4",
- .type = QEMU_OPT_BOOL,
- },{
- .name = "ipv6",
- .type = QEMU_OPT_BOOL,
- },{
- .name = "wait",
- .type = QEMU_OPT_BOOL,
- },{
- .name = "server",
- .type = QEMU_OPT_BOOL,
- },{
- .name = "delay",
- .type = QEMU_OPT_BOOL,
- },{
- .name = "reconnect",
- .type = QEMU_OPT_NUMBER,
- },{
- .name = "telnet",
- .type = QEMU_OPT_BOOL,
- },{
- .name = "tls-creds",
- .type = QEMU_OPT_STRING,
- },{
- .name = "width",
- .type = QEMU_OPT_NUMBER,
- },{
- .name = "height",
- .type = QEMU_OPT_NUMBER,
- },{
- .name = "cols",
- .type = QEMU_OPT_NUMBER,
- },{
- .name = "rows",
- .type = QEMU_OPT_NUMBER,
- },{
- .name = "mux",
- .type = QEMU_OPT_BOOL,
- },{
- .name = "signal",
- .type = QEMU_OPT_BOOL,
- },{
- .name = "name",
- .type = QEMU_OPT_STRING,
- },{
- .name = "debug",
- .type = QEMU_OPT_NUMBER,
- },{
- .name = "size",
- .type = QEMU_OPT_SIZE,
- },{
- .name = "chardev",
- .type = QEMU_OPT_STRING,
- },{
- .name = "append",
- .type = QEMU_OPT_BOOL,
- },{
- .name = "logfile",
- .type = QEMU_OPT_STRING,
- },{
- .name = "logappend",
- .type = QEMU_OPT_BOOL,
- },
- { /* end of list */ }
- },
-};
-
-#ifdef _WIN32
-
-static CharDriverState *qmp_chardev_open_file(const char *id,
- ChardevBackend *backend,
- ChardevReturn *ret,
- Error **errp)
-{
- ChardevFile *file = backend->u.file.data;
- ChardevCommon *common = qapi_ChardevFile_base(file);
- HANDLE out;
-
- if (file->has_in) {
- error_setg(errp, "input file not supported");
- return NULL;
- }
-
- out = CreateFile(file->out, GENERIC_WRITE, FILE_SHARE_READ, NULL,
- OPEN_ALWAYS, FILE_ATTRIBUTE_NORMAL, NULL);
- if (out == INVALID_HANDLE_VALUE) {
- error_setg(errp, "open %s failed", file->out);
- return NULL;
- }
- return qemu_chr_open_win_file(out, common, errp);
-}
-
-static CharDriverState *qmp_chardev_open_serial(const char *id,
- ChardevBackend *backend,
- ChardevReturn *ret,
- Error **errp)
-{
- ChardevHostdev *serial = backend->u.serial.data;
- ChardevCommon *common = qapi_ChardevHostdev_base(serial);
- return qemu_chr_open_win_path(serial->device, common, errp);
-}
-
-#else /* WIN32 */
-
-static int qmp_chardev_open_file_source(char *src, int flags,
- Error **errp)
-{
- int fd = -1;
-
- TFR(fd = qemu_open(src, flags, 0666));
- if (fd == -1) {
- error_setg_file_open(errp, errno, src);
- }
- return fd;
-}
-
-static CharDriverState *qmp_chardev_open_file(const char *id,
- ChardevBackend *backend,
- ChardevReturn *ret,
- Error **errp)
-{
- ChardevFile *file = backend->u.file.data;
- ChardevCommon *common = qapi_ChardevFile_base(file);
- int flags, in = -1, out;
-
- flags = O_WRONLY | O_CREAT | O_BINARY;
- if (file->has_append && file->append) {
- flags |= O_APPEND;
- } else {
- flags |= O_TRUNC;
- }
-
- out = qmp_chardev_open_file_source(file->out, flags, errp);
- if (out < 0) {
- return NULL;
- }
-
- if (file->has_in) {
- flags = O_RDONLY;
- in = qmp_chardev_open_file_source(file->in, flags, errp);
- if (in < 0) {
- qemu_close(out);
- return NULL;
- }
- }
-
- return qemu_chr_open_fd(in, out, common, errp);
-}
-
-#ifdef HAVE_CHARDEV_SERIAL
-static CharDriverState *qmp_chardev_open_serial(const char *id,
- ChardevBackend *backend,
- ChardevReturn *ret,
- Error **errp)
-{
- ChardevHostdev *serial = backend->u.serial.data;
- ChardevCommon *common = qapi_ChardevHostdev_base(serial);
- int fd;
-
- fd = qmp_chardev_open_file_source(serial->device, O_RDWR, errp);
- if (fd < 0) {
- return NULL;
- }
- qemu_set_nonblock(fd);
- return qemu_chr_open_tty_fd(fd, common, errp);
-}
-#endif
-
-#ifdef HAVE_CHARDEV_PARPORT
-static CharDriverState *qmp_chardev_open_parallel(const char *id,
- ChardevBackend *backend,
- ChardevReturn *ret,
- Error **errp)
-{
- ChardevHostdev *parallel = backend->u.parallel.data;
- ChardevCommon *common = qapi_ChardevHostdev_base(parallel);
- int fd;
-
- fd = qmp_chardev_open_file_source(parallel->device, O_RDWR, errp);
- if (fd < 0) {
- return NULL;
- }
- return qemu_chr_open_pp_fd(fd, common, errp);
-}
-#endif
-
-#endif /* WIN32 */
-
-static gboolean socket_reconnect_timeout(gpointer opaque)
-{
- CharDriverState *chr = opaque;
- TCPCharDriver *s = chr->opaque;
- QIOChannelSocket *sioc;
-
- s->reconnect_timer = 0;
-
- if (chr->be_open) {
- return false;
- }
-
- sioc = qio_channel_socket_new();
- qio_channel_socket_connect_async(sioc, s->addr,
- qemu_chr_socket_connected,
- chr, NULL);
-
- return false;
-}
-
-static CharDriverState *qmp_chardev_open_socket(const char *id,
- ChardevBackend *backend,
- ChardevReturn *ret,
- Error **errp)
-{
- CharDriverState *chr;
- TCPCharDriver *s;
- ChardevSocket *sock = backend->u.socket.data;
- SocketAddress *addr = sock->addr;
- bool do_nodelay = sock->has_nodelay ? sock->nodelay : false;
- bool is_listen = sock->has_server ? sock->server : true;
- bool is_telnet = sock->has_telnet ? sock->telnet : false;
- bool is_waitconnect = sock->has_wait ? sock->wait : false;
- int64_t reconnect = sock->has_reconnect ? sock->reconnect : 0;
- ChardevCommon *common = qapi_ChardevSocket_base(sock);
- QIOChannelSocket *sioc = NULL;
-
- chr = qemu_chr_alloc(common, errp);
- if (!chr) {
- return NULL;
- }
- s = g_new0(TCPCharDriver, 1);
-
- s->is_unix = addr->type == SOCKET_ADDRESS_KIND_UNIX;
- s->is_listen = is_listen;
- s->is_telnet = is_telnet;
- s->do_nodelay = do_nodelay;
- if (sock->tls_creds) {
- Object *creds;
- creds = object_resolve_path_component(
- object_get_objects_root(), sock->tls_creds);
- if (!creds) {
- error_setg(errp, "No TLS credentials with id '%s'",
- sock->tls_creds);
- goto error;
- }
- s->tls_creds = (QCryptoTLSCreds *)
- object_dynamic_cast(creds,
- TYPE_QCRYPTO_TLS_CREDS);
- if (!s->tls_creds) {
- error_setg(errp, "Object with id '%s' is not TLS credentials",
- sock->tls_creds);
- goto error;
- }
- object_ref(OBJECT(s->tls_creds));
- if (is_listen) {
- if (s->tls_creds->endpoint != QCRYPTO_TLS_CREDS_ENDPOINT_SERVER) {
- error_setg(errp, "%s",
- "Expected TLS credentials for server endpoint");
- goto error;
- }
- } else {
- if (s->tls_creds->endpoint != QCRYPTO_TLS_CREDS_ENDPOINT_CLIENT) {
- error_setg(errp, "%s",
- "Expected TLS credentials for client endpoint");
- goto error;
- }
- }
- }
-
- qapi_copy_SocketAddress(&s->addr, sock->addr);
-
- chr->opaque = s;
- chr->chr_write = tcp_chr_write;
- chr->chr_sync_read = tcp_chr_sync_read;
- chr->chr_close = tcp_chr_close;
- chr->get_msgfds = tcp_get_msgfds;
- chr->set_msgfds = tcp_set_msgfds;
- chr->chr_add_client = tcp_chr_add_client;
- chr->chr_add_watch = tcp_chr_add_watch;
- chr->chr_update_read_handler = tcp_chr_update_read_handler;
- /* be isn't opened until we get a connection */
- chr->explicit_be_open = true;
-
- chr->filename = SocketAddress_to_str("disconnected:",
- addr, is_listen, is_telnet);
-
- if (is_listen) {
- if (is_telnet) {
- s->do_telnetopt = 1;
- }
- } else if (reconnect > 0) {
- s->reconnect_time = reconnect;
- }
-
- sioc = qio_channel_socket_new();
- if (s->reconnect_time) {
- qio_channel_socket_connect_async(sioc, s->addr,
- qemu_chr_socket_connected,
- chr, NULL);
- } else if (s->is_listen) {
- if (qio_channel_socket_listen_sync(sioc, s->addr, errp) < 0) {
- goto error;
- }
- s->listen_ioc = sioc;
- if (is_waitconnect) {
- fprintf(stderr, "QEMU waiting for connection on: %s\n",
- chr->filename);
- tcp_chr_accept(QIO_CHANNEL(s->listen_ioc), G_IO_IN, chr);
- }
- qio_channel_set_blocking(QIO_CHANNEL(s->listen_ioc), false, NULL);
- if (!s->ioc) {
- s->listen_tag = qio_channel_add_watch(
- QIO_CHANNEL(s->listen_ioc), G_IO_IN, tcp_chr_accept, chr, NULL);
- }
- } else {
- if (qio_channel_socket_connect_sync(sioc, s->addr, errp) < 0) {
- goto error;
- }
- tcp_chr_new_client(chr, sioc);
- object_unref(OBJECT(sioc));
- }
-
- return chr;
-
- error:
- if (sioc) {
- object_unref(OBJECT(sioc));
- }
- if (s->tls_creds) {
- object_unref(OBJECT(s->tls_creds));
- }
- g_free(s);
- qemu_chr_free_common(chr);
- return NULL;
-}
-
-static CharDriverState *qmp_chardev_open_udp(const char *id,
- ChardevBackend *backend,
- ChardevReturn *ret,
- Error **errp)
-{
- ChardevUdp *udp = backend->u.udp.data;
- ChardevCommon *common = qapi_ChardevUdp_base(udp);
- QIOChannelSocket *sioc = qio_channel_socket_new();
-
- if (qio_channel_socket_dgram_sync(sioc,
- udp->local, udp->remote,
- errp) < 0) {
- object_unref(OBJECT(sioc));
- return NULL;
- }
- return qemu_chr_open_udp(sioc, common, errp);
-}
-
-ChardevReturn *qmp_chardev_add(const char *id, ChardevBackend *backend,
- Error **errp)
-{
- ChardevReturn *ret = g_new0(ChardevReturn, 1);
- CharDriverState *chr = NULL;
- Error *local_err = NULL;
- GSList *i;
- CharDriver *cd;
-
- chr = qemu_chr_find(id);
- if (chr) {
- error_setg(errp, "Chardev '%s' already exists", id);
- g_free(ret);
- return NULL;
- }
-
- for (i = backends; i; i = i->next) {
- cd = i->data;
-
- if (cd->kind == backend->type) {
- chr = cd->create(id, backend, ret, &local_err);
- if (local_err) {
- error_propagate(errp, local_err);
- goto out_error;
- }
- break;
- }
- }
-
- if (chr == NULL) {
- assert(!i);
- error_setg(errp, "chardev backend not available");
- goto out_error;
- }
-
- chr->label = g_strdup(id);
- chr->avail_connections =
- (backend->type == CHARDEV_BACKEND_KIND_MUX) ? MAX_MUX : 1;
- if (!chr->filename) {
- chr->filename = g_strdup(ChardevBackendKind_lookup[backend->type]);
- }
- if (!chr->explicit_be_open) {
- qemu_chr_be_event(chr, CHR_EVENT_OPENED);
- }
- QTAILQ_INSERT_TAIL(&chardevs, chr, next);
- return ret;
-
-out_error:
- g_free(ret);
- return NULL;
-}
-
-void qmp_chardev_remove(const char *id, Error **errp)
-{
- CharDriverState *chr;
-
- chr = qemu_chr_find(id);
- if (chr == NULL) {
- error_setg(errp, "Chardev '%s' not found", id);
- return;
- }
- if (chr->chr_can_read || chr->chr_read ||
- chr->chr_event || chr->handler_opaque) {
- error_setg(errp, "Chardev '%s' is busy", id);
- return;
- }
- if (chr->replay) {
- error_setg(errp,
- "Chardev '%s' cannot be unplugged in record/replay mode", id);
- return;
- }
- qemu_chr_delete(chr);
-}
-
-static void register_types(void)
-{
- register_char_driver("null", CHARDEV_BACKEND_KIND_NULL, NULL,
- qemu_chr_open_null);
- register_char_driver("socket", CHARDEV_BACKEND_KIND_SOCKET,
- qemu_chr_parse_socket, qmp_chardev_open_socket);
- register_char_driver("udp", CHARDEV_BACKEND_KIND_UDP, qemu_chr_parse_udp,
- qmp_chardev_open_udp);
- register_char_driver("ringbuf", CHARDEV_BACKEND_KIND_RINGBUF,
- qemu_chr_parse_ringbuf, qemu_chr_open_ringbuf);
- register_char_driver("file", CHARDEV_BACKEND_KIND_FILE,
- qemu_chr_parse_file_out, qmp_chardev_open_file);
- register_char_driver("stdio", CHARDEV_BACKEND_KIND_STDIO,
- qemu_chr_parse_stdio, qemu_chr_open_stdio);
-#if defined HAVE_CHARDEV_SERIAL
- register_char_driver("serial", CHARDEV_BACKEND_KIND_SERIAL,
- qemu_chr_parse_serial, qmp_chardev_open_serial);
- register_char_driver("tty", CHARDEV_BACKEND_KIND_SERIAL,
- qemu_chr_parse_serial, qmp_chardev_open_serial);
-#endif
-#ifdef HAVE_CHARDEV_PARPORT
- register_char_driver("parallel", CHARDEV_BACKEND_KIND_PARALLEL,
- qemu_chr_parse_parallel, qmp_chardev_open_parallel);
- register_char_driver("parport", CHARDEV_BACKEND_KIND_PARALLEL,
- qemu_chr_parse_parallel, qmp_chardev_open_parallel);
-#endif
-#ifdef HAVE_CHARDEV_PTY
- register_char_driver("pty", CHARDEV_BACKEND_KIND_PTY, NULL,
- qemu_chr_open_pty);
-#endif
-#ifdef _WIN32
- register_char_driver("console", CHARDEV_BACKEND_KIND_CONSOLE, NULL,
- qemu_chr_open_win_con);
-#endif
- register_char_driver("pipe", CHARDEV_BACKEND_KIND_PIPE,
- qemu_chr_parse_pipe, qemu_chr_open_pipe);
- register_char_driver("mux", CHARDEV_BACKEND_KIND_MUX, qemu_chr_parse_mux,
- qemu_chr_open_mux);
- /* Bug-compatibility: */
- register_char_driver("memory", CHARDEV_BACKEND_KIND_MEMORY,
- qemu_chr_parse_ringbuf, qemu_chr_open_ringbuf);
- /* this must be done after machine init, since we register FEs with muxes
- * as part of realize functions like serial_isa_realizefn when -nographic
- * is specified
- */
- qemu_add_machine_init_done_notifier(&muxes_realize_notify);
-}
-
-type_init(register_types);