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-rw-r--r--qemu-char.c2202
1 files changed, 2202 insertions, 0 deletions
diff --git a/qemu-char.c b/qemu-char.c
new file mode 100644
index 0000000000..0a940a7f5f
--- /dev/null
+++ b/qemu-char.c
@@ -0,0 +1,2202 @@
+/*
+ * QEMU System Emulator
+ *
+ * Copyright (c) 2003-2008 Fabrice Bellard
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+#include "qemu-common.h"
+#include "net.h"
+#include "console.h"
+#include "sysemu.h"
+#include "qemu-timer.h"
+#include "qemu-char.h"
+#include "block.h"
+
+#include <unistd.h>
+#include <fcntl.h>
+#include <signal.h>
+#include <time.h>
+#include <errno.h>
+#include <sys/time.h>
+#include <zlib.h>
+
+#ifndef _WIN32
+#include <sys/times.h>
+#include <sys/wait.h>
+#include <termios.h>
+#include <sys/mman.h>
+#include <sys/ioctl.h>
+#include <sys/socket.h>
+#include <netinet/in.h>
+#include <dirent.h>
+#include <netdb.h>
+#include <sys/select.h>
+#include <arpa/inet.h>
+#ifdef _BSD
+#include <sys/stat.h>
+#if !defined(__APPLE__) && !defined(__OpenBSD__)
+#include <libutil.h>
+#endif
+#ifdef __OpenBSD__
+#include <net/if.h>
+#endif
+#elif defined (__GLIBC__) && defined (__FreeBSD_kernel__)
+#include <freebsd/stdlib.h>
+#else
+#ifdef __linux__
+#include <linux/if.h>
+#include <pty.h>
+
+#include <linux/ppdev.h>
+#include <linux/parport.h>
+#endif
+#ifdef __sun__
+#include <sys/stat.h>
+#include <sys/ethernet.h>
+#include <sys/sockio.h>
+#include <netinet/arp.h>
+#include <netinet/in.h>
+#include <netinet/in_systm.h>
+#include <netinet/ip.h>
+#include <netinet/ip_icmp.h> // must come after ip.h
+#include <netinet/udp.h>
+#include <netinet/tcp.h>
+#include <net/if.h>
+#include <syslog.h>
+#include <stropts.h>
+#endif
+#endif
+#endif
+
+#include "qemu_socket.h"
+
+/***********************************************************/
+/* character device */
+
+static void qemu_chr_event(CharDriverState *s, int event)
+{
+ if (!s->chr_event)
+ return;
+ s->chr_event(s->handler_opaque, event);
+}
+
+static void qemu_chr_reset_bh(void *opaque)
+{
+ CharDriverState *s = opaque;
+ qemu_chr_event(s, CHR_EVENT_RESET);
+ qemu_bh_delete(s->bh);
+ s->bh = NULL;
+}
+
+void qemu_chr_reset(CharDriverState *s)
+{
+ if (s->bh == NULL) {
+ s->bh = qemu_bh_new(qemu_chr_reset_bh, s);
+ qemu_bh_schedule(s->bh);
+ }
+}
+
+int qemu_chr_write(CharDriverState *s, const uint8_t *buf, int len)
+{
+ return s->chr_write(s, buf, len);
+}
+
+int qemu_chr_ioctl(CharDriverState *s, int cmd, void *arg)
+{
+ if (!s->chr_ioctl)
+ return -ENOTSUP;
+ return s->chr_ioctl(s, cmd, arg);
+}
+
+int qemu_chr_can_read(CharDriverState *s)
+{
+ if (!s->chr_can_read)
+ return 0;
+ return s->chr_can_read(s->handler_opaque);
+}
+
+void qemu_chr_read(CharDriverState *s, uint8_t *buf, int len)
+{
+ s->chr_read(s->handler_opaque, buf, len);
+}
+
+void qemu_chr_accept_input(CharDriverState *s)
+{
+ if (s->chr_accept_input)
+ s->chr_accept_input(s);
+}
+
+void qemu_chr_printf(CharDriverState *s, const char *fmt, ...)
+{
+ char buf[4096];
+ va_list ap;
+ va_start(ap, fmt);
+ vsnprintf(buf, sizeof(buf), fmt, ap);
+ qemu_chr_write(s, (uint8_t *)buf, strlen(buf));
+ va_end(ap);
+}
+
+void qemu_chr_send_event(CharDriverState *s, int event)
+{
+ if (s->chr_send_event)
+ s->chr_send_event(s, event);
+}
+
+void qemu_chr_add_handlers(CharDriverState *s,
+ IOCanRWHandler *fd_can_read,
+ IOReadHandler *fd_read,
+ IOEventHandler *fd_event,
+ void *opaque)
+{
+ s->chr_can_read = fd_can_read;
+ s->chr_read = fd_read;
+ s->chr_event = fd_event;
+ s->handler_opaque = opaque;
+ if (s->chr_update_read_handler)
+ s->chr_update_read_handler(s);
+}
+
+static int null_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
+{
+ return len;
+}
+
+static CharDriverState *qemu_chr_open_null(void)
+{
+ CharDriverState *chr;
+
+ chr = qemu_mallocz(sizeof(CharDriverState));
+ if (!chr)
+ return NULL;
+ chr->chr_write = null_chr_write;
+ return chr;
+}
+
+/* MUX driver for serial I/O splitting */
+static int term_timestamps;
+static int64_t term_timestamps_start;
+#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 {
+ IOCanRWHandler *chr_can_read[MAX_MUX];
+ IOReadHandler *chr_read[MAX_MUX];
+ IOEventHandler *chr_event[MAX_MUX];
+ void *ext_opaque[MAX_MUX];
+ CharDriverState *drv;
+ unsigned char buffer[MUX_BUFFER_SIZE];
+ int prod;
+ int cons;
+ int mux_cnt;
+ int term_got_escape;
+ int max_size;
+} MuxDriver;
+
+
+static int mux_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
+{
+ MuxDriver *d = chr->opaque;
+ int ret;
+ if (!term_timestamps) {
+ ret = d->drv->chr_write(d->drv, buf, len);
+ } else {
+ int i;
+
+ ret = 0;
+ for(i = 0; i < len; i++) {
+ ret += d->drv->chr_write(d->drv, buf+i, 1);
+ if (buf[i] == '\n') {
+ char buf1[64];
+ int64_t ti;
+ int secs;
+
+ ti = qemu_get_clock(rt_clock);
+ if (term_timestamps_start == -1)
+ term_timestamps_start = ti;
+ ti -= term_timestamps_start;
+ secs = ti / 1000000000;
+ snprintf(buf1, sizeof(buf1),
+ "[%02d:%02d:%02d.%03d] ",
+ secs / 3600,
+ (secs / 60) % 60,
+ secs % 60,
+ (int)((ti / 1000000) % 1000));
+ d->drv->chr_write(d->drv, (uint8_t *)buf1, strlen(buf1));
+ }
+ }
+ }
+ return ret;
+}
+
+static const char * const mux_help[] = {
+ "% h print this help\n\r",
+ "% x exit emulator\n\r",
+ "% s save disk data back to file (if -snapshot)\n\r",
+ "% t toggle console timestamps\n\r"
+ "% b send break (magic sysrq)\n\r",
+ "% c switch between console and monitor\n\r",
+ "% % sends %\n\r",
+ NULL
+};
+
+int term_escape_char = 0x01; /* ctrl-a is used for escape */
+static void mux_print_help(CharDriverState *chr)
+{
+ int i, j;
+ char ebuf[15] = "Escape-Char";
+ char cbuf[50] = "\n\r";
+
+ if (term_escape_char > 0 && term_escape_char < 26) {
+ snprintf(cbuf, sizeof(cbuf), "\n\r");
+ snprintf(ebuf, sizeof(ebuf), "C-%c", term_escape_char - 1 + 'a');
+ } else {
+ snprintf(cbuf, sizeof(cbuf),
+ "\n\rEscape-Char set to Ascii: 0x%02x\n\r\n\r",
+ term_escape_char);
+ }
+ chr->chr_write(chr, (uint8_t *)cbuf, strlen(cbuf));
+ for (i = 0; mux_help[i] != NULL; i++) {
+ for (j=0; mux_help[i][j] != '\0'; j++) {
+ if (mux_help[i][j] == '%')
+ chr->chr_write(chr, (uint8_t *)ebuf, strlen(ebuf));
+ else
+ chr->chr_write(chr, (uint8_t *)&mux_help[i][j], 1);
+ }
+ }
+}
+
+static int mux_proc_byte(CharDriverState *chr, MuxDriver *d, int ch)
+{
+ if (d->term_got_escape) {
+ d->term_got_escape = 0;
+ if (ch == term_escape_char)
+ goto send_char;
+ switch(ch) {
+ case '?':
+ case 'h':
+ mux_print_help(chr);
+ break;
+ case 'x':
+ {
+ const char *term = "QEMU: Terminated\n\r";
+ chr->chr_write(chr,(uint8_t *)term,strlen(term));
+ exit(0);
+ break;
+ }
+ case 's':
+ {
+ int i;
+ for (i = 0; i < nb_drives; i++) {
+ bdrv_commit(drives_table[i].bdrv);
+ }
+ }
+ break;
+ case 'b':
+ qemu_chr_event(chr, CHR_EVENT_BREAK);
+ break;
+ case 'c':
+ /* Switch to the next registered device */
+ chr->focus++;
+ if (chr->focus >= d->mux_cnt)
+ chr->focus = 0;
+ break;
+ case 't':
+ term_timestamps = !term_timestamps;
+ term_timestamps_start = -1;
+ 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)
+{
+ int m = chr->focus;
+ MuxDriver *d = chr->opaque;
+
+ while (d->prod != d->cons &&
+ d->chr_can_read[m] &&
+ d->chr_can_read[m](d->ext_opaque[m])) {
+ d->chr_read[m](d->ext_opaque[m],
+ &d->buffer[d->cons++ & MUX_BUFFER_MASK], 1);
+ }
+}
+
+static int mux_chr_can_read(void *opaque)
+{
+ CharDriverState *chr = opaque;
+ MuxDriver *d = chr->opaque;
+
+ if ((d->prod - d->cons) < MUX_BUFFER_SIZE)
+ return 1;
+ if (d->chr_can_read[chr->focus])
+ return d->chr_can_read[chr->focus](d->ext_opaque[chr->focus]);
+ return 0;
+}
+
+static void mux_chr_read(void *opaque, const uint8_t *buf, int size)
+{
+ CharDriverState *chr = opaque;
+ MuxDriver *d = chr->opaque;
+ int m = chr->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 == d->cons &&
+ 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[d->prod++ & 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++)
+ if (d->chr_event[i])
+ d->chr_event[i](d->ext_opaque[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);
+ }
+ chr->focus = d->mux_cnt;
+ d->mux_cnt++;
+}
+
+static CharDriverState *qemu_chr_open_mux(CharDriverState *drv)
+{
+ CharDriverState *chr;
+ MuxDriver *d;
+
+ chr = qemu_mallocz(sizeof(CharDriverState));
+ if (!chr)
+ return NULL;
+ d = qemu_mallocz(sizeof(MuxDriver));
+ if (!d) {
+ free(chr);
+ return NULL;
+ }
+
+ chr->opaque = d;
+ d->drv = drv;
+ chr->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;
+ return chr;
+}
+
+
+#ifdef _WIN32
+int send_all(int fd, const uint8_t *buf, int len1)
+{
+ int ret, len;
+
+ len = len1;
+ while (len > 0) {
+ ret = send(fd, buf, len, 0);
+ if (ret < 0) {
+ int errno;
+ errno = WSAGetLastError();
+ if (errno != WSAEWOULDBLOCK) {
+ return -1;
+ }
+ } else if (ret == 0) {
+ break;
+ } else {
+ buf += ret;
+ len -= ret;
+ }
+ }
+ return len1 - len;
+}
+
+#else
+
+static int unix_write(int fd, const uint8_t *buf, int len1)
+{
+ int ret, len;
+
+ len = len1;
+ while (len > 0) {
+ ret = write(fd, buf, len);
+ if (ret < 0) {
+ if (errno != EINTR && errno != EAGAIN)
+ return -1;
+ } else if (ret == 0) {
+ break;
+ } else {
+ buf += ret;
+ len -= ret;
+ }
+ }
+ return len1 - len;
+}
+
+inline int send_all(int fd, const uint8_t *buf, int len1)
+{
+ return unix_write(fd, buf, len1);
+}
+#endif /* !_WIN32 */
+
+#ifndef _WIN32
+
+typedef struct {
+ int fd_in, fd_out;
+ int max_size;
+} FDCharDriver;
+
+#define STDIO_MAX_CLIENTS 1
+static int stdio_nb_clients = 0;
+
+static int fd_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
+{
+ FDCharDriver *s = chr->opaque;
+ return send_all(s->fd_out, buf, len);
+}
+
+static int fd_chr_read_poll(void *opaque)
+{
+ CharDriverState *chr = opaque;
+ FDCharDriver *s = chr->opaque;
+
+ s->max_size = qemu_chr_can_read(chr);
+ return s->max_size;
+}
+
+static void fd_chr_read(void *opaque)
+{
+ CharDriverState *chr = opaque;
+ FDCharDriver *s = chr->opaque;
+ int size, len;
+ uint8_t buf[1024];
+
+ len = sizeof(buf);
+ if (len > s->max_size)
+ len = s->max_size;
+ if (len == 0)
+ return;
+ size = read(s->fd_in, buf, len);
+ if (size == 0) {
+ /* FD has been closed. Remove it from the active list. */
+ qemu_set_fd_handler2(s->fd_in, NULL, NULL, NULL, NULL);
+ return;
+ }
+ if (size > 0) {
+ qemu_chr_read(chr, buf, size);
+ }
+}
+
+static void fd_chr_update_read_handler(CharDriverState *chr)
+{
+ FDCharDriver *s = chr->opaque;
+
+ if (s->fd_in >= 0) {
+ if (nographic && s->fd_in == 0) {
+ } else {
+ qemu_set_fd_handler2(s->fd_in, fd_chr_read_poll,
+ fd_chr_read, NULL, chr);
+ }
+ }
+}
+
+static void fd_chr_close(struct CharDriverState *chr)
+{
+ FDCharDriver *s = chr->opaque;
+
+ if (s->fd_in >= 0) {
+ if (nographic && s->fd_in == 0) {
+ } else {
+ qemu_set_fd_handler2(s->fd_in, NULL, NULL, NULL, NULL);
+ }
+ }
+
+ qemu_free(s);
+}
+
+/* open a character device to a unix fd */
+static CharDriverState *qemu_chr_open_fd(int fd_in, int fd_out)
+{
+ CharDriverState *chr;
+ FDCharDriver *s;
+
+ chr = qemu_mallocz(sizeof(CharDriverState));
+ if (!chr)
+ return NULL;
+ s = qemu_mallocz(sizeof(FDCharDriver));
+ if (!s) {
+ free(chr);
+ return NULL;
+ }
+ s->fd_in = fd_in;
+ s->fd_out = fd_out;
+ chr->opaque = s;
+ chr->chr_write = fd_chr_write;
+ chr->chr_update_read_handler = fd_chr_update_read_handler;
+ chr->chr_close = fd_chr_close;
+
+ qemu_chr_reset(chr);
+
+ return chr;
+}
+
+static CharDriverState *qemu_chr_open_file_out(const char *file_out)
+{
+ int fd_out;
+
+ TFR(fd_out = open(file_out, O_WRONLY | O_TRUNC | O_CREAT | O_BINARY, 0666));
+ if (fd_out < 0)
+ return NULL;
+ return qemu_chr_open_fd(-1, fd_out);
+}
+
+static CharDriverState *qemu_chr_open_pipe(const char *filename)
+{
+ int fd_in, fd_out;
+ char filename_in[256], filename_out[256];
+
+ snprintf(filename_in, 256, "%s.in", filename);
+ snprintf(filename_out, 256, "%s.out", filename);
+ TFR(fd_in = open(filename_in, O_RDWR | O_BINARY));
+ TFR(fd_out = open(filename_out, O_RDWR | O_BINARY));
+ if (fd_in < 0 || fd_out < 0) {
+ if (fd_in >= 0)
+ close(fd_in);
+ if (fd_out >= 0)
+ close(fd_out);
+ TFR(fd_in = fd_out = open(filename, O_RDWR | O_BINARY));
+ if (fd_in < 0)
+ return NULL;
+ }
+ return qemu_chr_open_fd(fd_in, fd_out);
+}
+
+
+/* for STDIO, we handle the case where several clients use it
+ (nographic mode) */
+
+#define TERM_FIFO_MAX_SIZE 1
+
+static uint8_t term_fifo[TERM_FIFO_MAX_SIZE];
+static int term_fifo_size;
+
+static int stdio_read_poll(void *opaque)
+{
+ CharDriverState *chr = opaque;
+
+ /* try to flush the queue if needed */
+ if (term_fifo_size != 0 && qemu_chr_can_read(chr) > 0) {
+ qemu_chr_read(chr, term_fifo, 1);
+ term_fifo_size = 0;
+ }
+ /* see if we can absorb more chars */
+ if (term_fifo_size == 0)
+ return 1;
+ else
+ return 0;
+}
+
+static void stdio_read(void *opaque)
+{
+ int size;
+ uint8_t buf[1];
+ CharDriverState *chr = opaque;
+
+ size = read(0, buf, 1);
+ if (size == 0) {
+ /* stdin has been closed. Remove it from the active list. */
+ qemu_set_fd_handler2(0, NULL, NULL, NULL, NULL);
+ return;
+ }
+ if (size > 0) {
+ if (qemu_chr_can_read(chr) > 0) {
+ qemu_chr_read(chr, buf, 1);
+ } else if (term_fifo_size == 0) {
+ term_fifo[term_fifo_size++] = buf[0];
+ }
+ }
+}
+
+/* init terminal so that we can grab keys */
+static struct termios oldtty;
+static int old_fd0_flags;
+static int term_atexit_done;
+
+static void term_exit(void)
+{
+ tcsetattr (0, TCSANOW, &oldtty);
+ fcntl(0, F_SETFL, old_fd0_flags);
+}
+
+static void term_init(void)
+{
+ struct termios tty;
+
+ tcgetattr (0, &tty);
+ oldtty = tty;
+ old_fd0_flags = fcntl(0, F_GETFL);
+
+ tty.c_iflag &= ~(IGNBRK|BRKINT|PARMRK|ISTRIP
+ |INLCR|IGNCR|ICRNL|IXON);
+ tty.c_oflag |= OPOST;
+ tty.c_lflag &= ~(ECHO|ECHONL|ICANON|IEXTEN);
+ /* if graphical mode, we allow Ctrl-C handling */
+ if (nographic)
+ tty.c_lflag &= ~ISIG;
+ tty.c_cflag &= ~(CSIZE|PARENB);
+ tty.c_cflag |= CS8;
+ tty.c_cc[VMIN] = 1;
+ tty.c_cc[VTIME] = 0;
+
+ tcsetattr (0, TCSANOW, &tty);
+
+ if (!term_atexit_done++)
+ atexit(term_exit);
+
+ fcntl(0, F_SETFL, O_NONBLOCK);
+}
+
+static void qemu_chr_close_stdio(struct CharDriverState *chr)
+{
+ term_exit();
+ stdio_nb_clients--;
+ qemu_set_fd_handler2(0, NULL, NULL, NULL, NULL);
+ fd_chr_close(chr);
+}
+
+static CharDriverState *qemu_chr_open_stdio(void)
+{
+ CharDriverState *chr;
+
+ if (stdio_nb_clients >= STDIO_MAX_CLIENTS)
+ return NULL;
+ chr = qemu_chr_open_fd(0, 1);
+ chr->chr_close = qemu_chr_close_stdio;
+ qemu_set_fd_handler2(0, stdio_read_poll, stdio_read, NULL, chr);
+ stdio_nb_clients++;
+ term_init();
+
+ return chr;
+}
+
+#ifdef __sun__
+/* Once Solaris has openpty(), this is going to be removed. */
+int openpty(int *amaster, int *aslave, char *name,
+ struct termios *termp, struct winsize *winp)
+{
+ const char *slave;
+ int mfd = -1, sfd = -1;
+
+ *amaster = *aslave = -1;
+
+ mfd = open("/dev/ptmx", O_RDWR | O_NOCTTY);
+ if (mfd < 0)
+ goto err;
+
+ if (grantpt(mfd) == -1 || unlockpt(mfd) == -1)
+ goto err;
+
+ if ((slave = ptsname(mfd)) == NULL)
+ goto err;
+
+ if ((sfd = open(slave, O_RDONLY | O_NOCTTY)) == -1)
+ goto err;
+
+ if (ioctl(sfd, I_PUSH, "ptem") == -1 ||
+ (termp != NULL && tcgetattr(sfd, termp) < 0))
+ goto err;
+
+ if (amaster)
+ *amaster = mfd;
+ if (aslave)
+ *aslave = sfd;
+ if (winp)
+ ioctl(sfd, TIOCSWINSZ, winp);
+
+ return 0;
+
+err:
+ if (sfd != -1)
+ close(sfd);
+ close(mfd);
+ return -1;
+}
+
+void cfmakeraw (struct termios *termios_p)
+{
+ termios_p->c_iflag &=
+ ~(IGNBRK|BRKINT|PARMRK|ISTRIP|INLCR|IGNCR|ICRNL|IXON);
+ termios_p->c_oflag &= ~OPOST;
+ termios_p->c_lflag &= ~(ECHO|ECHONL|ICANON|ISIG|IEXTEN);
+ termios_p->c_cflag &= ~(CSIZE|PARENB);
+ termios_p->c_cflag |= CS8;
+
+ termios_p->c_cc[VMIN] = 0;
+ termios_p->c_cc[VTIME] = 0;
+}
+#endif
+
+#if defined(__linux__) || defined(__sun__) || defined(__FreeBSD__) \
+ || defined(__NetBSD__) || defined(__OpenBSD__)
+
+typedef struct {
+ int fd;
+ int connected;
+ int polling;
+ int read_bytes;
+ QEMUTimer *timer;
+} PtyCharDriver;
+
+static void pty_chr_update_read_handler(CharDriverState *chr);
+static void pty_chr_state(CharDriverState *chr, int connected);
+
+static int pty_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
+{
+ PtyCharDriver *s = chr->opaque;
+
+ if (!s->connected) {
+ /* guest sends data, check for (re-)connect */
+ pty_chr_update_read_handler(chr);
+ return 0;
+ }
+ return send_all(s->fd, buf, len);
+}
+
+static int pty_chr_read_poll(void *opaque)
+{
+ CharDriverState *chr = opaque;
+ PtyCharDriver *s = chr->opaque;
+
+ s->read_bytes = qemu_chr_can_read(chr);
+ return s->read_bytes;
+}
+
+static void pty_chr_read(void *opaque)
+{
+ CharDriverState *chr = opaque;
+ PtyCharDriver *s = chr->opaque;
+ int size, len;
+ uint8_t buf[1024];
+
+ len = sizeof(buf);
+ if (len > s->read_bytes)
+ len = s->read_bytes;
+ if (len == 0)
+ return;
+ size = read(s->fd, buf, len);
+ if ((size == -1 && errno == EIO) ||
+ (size == 0)) {
+ pty_chr_state(chr, 0);
+ return;
+ }
+ if (size > 0) {
+ pty_chr_state(chr, 1);
+ qemu_chr_read(chr, buf, size);
+ }
+}
+
+static void pty_chr_update_read_handler(CharDriverState *chr)
+{
+ PtyCharDriver *s = chr->opaque;
+
+ qemu_set_fd_handler2(s->fd, pty_chr_read_poll,
+ pty_chr_read, NULL, chr);
+ s->polling = 1;
+ /*
+ * Short timeout here: just need wait long enougth that qemu makes
+ * it through the poll loop once. When reconnected we want a
+ * short timeout so we notice it almost instantly. Otherwise
+ * read() gives us -EIO instantly, making pty_chr_state() reset the
+ * timeout to the normal (much longer) poll interval before the
+ * timer triggers.
+ */
+ qemu_mod_timer(s->timer, qemu_get_clock(rt_clock) + 10);
+}
+
+static void pty_chr_state(CharDriverState *chr, int connected)
+{
+ PtyCharDriver *s = chr->opaque;
+
+ if (!connected) {
+ qemu_set_fd_handler2(s->fd, NULL, NULL, NULL, NULL);
+ s->connected = 0;
+ s->polling = 0;
+ /* (re-)connect poll interval for idle guests: once per second.
+ * We check more frequently in case the guests sends data to
+ * the virtual device linked to our pty. */
+ qemu_mod_timer(s->timer, qemu_get_clock(rt_clock) + 1000);
+ } else {
+ if (!s->connected)
+ qemu_chr_reset(chr);
+ s->connected = 1;
+ }
+}
+
+static void pty_chr_timer(void *opaque)
+{
+ struct CharDriverState *chr = opaque;
+ PtyCharDriver *s = chr->opaque;
+
+ if (s->connected)
+ return;
+ if (s->polling) {
+ /* If we arrive here without polling being cleared due
+ * read returning -EIO, then we are (re-)connected */
+ pty_chr_state(chr, 1);
+ return;
+ }
+
+ /* Next poll ... */
+ pty_chr_update_read_handler(chr);
+}
+
+static void pty_chr_close(struct CharDriverState *chr)
+{
+ PtyCharDriver *s = chr->opaque;
+
+ qemu_set_fd_handler2(s->fd, NULL, NULL, NULL, NULL);
+ close(s->fd);
+ qemu_free(s);
+}
+
+static CharDriverState *qemu_chr_open_pty(void)
+{
+ CharDriverState *chr;
+ PtyCharDriver *s;
+ struct termios tty;
+ int slave_fd, len;
+#if defined(__OpenBSD__)
+ char pty_name[PATH_MAX];
+#define q_ptsname(x) pty_name
+#else
+ char *pty_name = NULL;
+#define q_ptsname(x) ptsname(x)
+#endif
+
+ chr = qemu_mallocz(sizeof(CharDriverState));
+ if (!chr)
+ return NULL;
+ s = qemu_mallocz(sizeof(PtyCharDriver));
+ if (!s) {
+ qemu_free(chr);
+ return NULL;
+ }
+
+ if (openpty(&s->fd, &slave_fd, pty_name, NULL, NULL) < 0) {
+ return NULL;
+ }
+
+ /* Set raw attributes on the pty. */
+ cfmakeraw(&tty);
+ tcsetattr(slave_fd, TCSAFLUSH, &tty);
+ close(slave_fd);
+
+ len = strlen(q_ptsname(s->fd)) + 5;
+ chr->filename = qemu_malloc(len);
+ snprintf(chr->filename, len, "pty:%s", q_ptsname(s->fd));
+ fprintf(stderr, "char device redirected to %s\n", q_ptsname(s->fd));
+
+ chr->opaque = s;
+ chr->chr_write = pty_chr_write;
+ chr->chr_update_read_handler = pty_chr_update_read_handler;
+ chr->chr_close = pty_chr_close;
+
+ s->timer = qemu_new_timer(rt_clock, pty_chr_timer, chr);
+
+ return chr;
+}
+
+static void tty_serial_init(int fd, int speed,
+ int parity, int data_bits, int stop_bits)
+{
+ struct termios tty;
+ speed_t spd;
+
+#if 0
+ printf("tty_serial_init: speed=%d parity=%c data=%d stop=%d\n",
+ speed, parity, data_bits, stop_bits);
+#endif
+ tcgetattr (fd, &tty);
+
+#define MARGIN 1.1
+ if (speed <= 50 * MARGIN)
+ spd = B50;
+ else if (speed <= 75 * MARGIN)
+ spd = B75;
+ else if (speed <= 300 * MARGIN)
+ spd = B300;
+ else if (speed <= 600 * MARGIN)
+ spd = B600;
+ else if (speed <= 1200 * MARGIN)
+ spd = B1200;
+ else if (speed <= 2400 * MARGIN)
+ spd = B2400;
+ else if (speed <= 4800 * MARGIN)
+ spd = B4800;
+ else if (speed <= 9600 * MARGIN)
+ spd = B9600;
+ else if (speed <= 19200 * MARGIN)
+ spd = B19200;
+ else if (speed <= 38400 * MARGIN)
+ spd = B38400;
+ else if (speed <= 57600 * MARGIN)
+ spd = B57600;
+ else if (speed <= 115200 * MARGIN)
+ spd = B115200;
+ else
+ spd = B115200;
+
+ cfsetispeed(&tty, spd);
+ cfsetospeed(&tty, spd);
+
+ tty.c_iflag &= ~(IGNBRK|BRKINT|PARMRK|ISTRIP
+ |INLCR|IGNCR|ICRNL|IXON);
+ tty.c_oflag |= OPOST;
+ tty.c_lflag &= ~(ECHO|ECHONL|ICANON|IEXTEN|ISIG);
+ tty.c_cflag &= ~(CSIZE|PARENB|PARODD|CRTSCTS|CSTOPB);
+ switch(data_bits) {
+ default:
+ case 8:
+ tty.c_cflag |= CS8;
+ break;
+ case 7:
+ tty.c_cflag |= CS7;
+ break;
+ case 6:
+ tty.c_cflag |= CS6;
+ break;
+ case 5:
+ tty.c_cflag |= CS5;
+ break;
+ }
+ switch(parity) {
+ default:
+ case 'N':
+ break;
+ case 'E':
+ tty.c_cflag |= PARENB;
+ break;
+ case 'O':
+ tty.c_cflag |= PARENB | PARODD;
+ break;
+ }
+ if (stop_bits == 2)
+ tty.c_cflag |= CSTOPB;
+
+ tcsetattr (fd, TCSANOW, &tty);
+}
+
+static int tty_serial_ioctl(CharDriverState *chr, int cmd, void *arg)
+{
+ FDCharDriver *s = chr->opaque;
+
+ switch(cmd) {
+ case CHR_IOCTL_SERIAL_SET_PARAMS:
+ {
+ QEMUSerialSetParams *ssp = arg;
+ tty_serial_init(s->fd_in, ssp->speed, ssp->parity,
+ ssp->data_bits, ssp->stop_bits);
+ }
+ break;
+ case CHR_IOCTL_SERIAL_SET_BREAK:
+ {
+ int enable = *(int *)arg;
+ if (enable)
+ tcsendbreak(s->fd_in, 1);
+ }
+ break;
+ case CHR_IOCTL_SERIAL_GET_TIOCM:
+ {
+ int sarg = 0;
+ int *targ = (int *)arg;
+ ioctl(s->fd_in, TIOCMGET, &sarg);
+ *targ = 0;
+ if (sarg | TIOCM_CTS)
+ *targ |= CHR_TIOCM_CTS;
+ if (sarg | TIOCM_CAR)
+ *targ |= CHR_TIOCM_CAR;
+ if (sarg | TIOCM_DSR)
+ *targ |= CHR_TIOCM_DSR;
+ if (sarg | TIOCM_RI)
+ *targ |= CHR_TIOCM_RI;
+ if (sarg | TIOCM_DTR)
+ *targ |= CHR_TIOCM_DTR;
+ if (sarg | TIOCM_RTS)
+ *targ |= CHR_TIOCM_RTS;
+ }
+ break;
+ case CHR_IOCTL_SERIAL_SET_TIOCM:
+ {
+ int sarg = *(int *)arg;
+ int targ = 0;
+ if (sarg | CHR_TIOCM_DTR)
+ targ |= TIOCM_DTR;
+ if (sarg | CHR_TIOCM_RTS)
+ targ |= TIOCM_RTS;
+ ioctl(s->fd_in, TIOCMSET, &targ);
+ }
+ break;
+ default:
+ return -ENOTSUP;
+ }
+ return 0;
+}
+
+static CharDriverState *qemu_chr_open_tty(const char *filename)
+{
+ CharDriverState *chr;
+ int fd;
+
+ TFR(fd = open(filename, O_RDWR | O_NONBLOCK));
+ tty_serial_init(fd, 115200, 'N', 8, 1);
+ chr = qemu_chr_open_fd(fd, fd);
+ if (!chr) {
+ close(fd);
+ return NULL;
+ }
+ chr->chr_ioctl = tty_serial_ioctl;
+ qemu_chr_reset(chr);
+ return chr;
+}
+#else /* ! __linux__ && ! __sun__ */
+static CharDriverState *qemu_chr_open_pty(void)
+{
+ return NULL;
+}
+#endif /* __linux__ || __sun__ */
+
+#if defined(__linux__)
+typedef struct {
+ int fd;
+ int mode;
+} ParallelCharDriver;
+
+static int pp_hw_mode(ParallelCharDriver *s, uint16_t mode)
+{
+ if (s->mode != mode) {
+ int m = mode;
+ if (ioctl(s->fd, PPSETMODE, &m) < 0)
+ return 0;
+ s->mode = mode;
+ }
+ return 1;
+}
+
+static int pp_ioctl(CharDriverState *chr, int cmd, void *arg)
+{
+ ParallelCharDriver *drv = chr->opaque;
+ int fd = drv->fd;
+ uint8_t b;
+
+ switch(cmd) {
+ case CHR_IOCTL_PP_READ_DATA:
+ if (ioctl(fd, PPRDATA, &b) < 0)
+ return -ENOTSUP;
+ *(uint8_t *)arg = b;
+ break;
+ case CHR_IOCTL_PP_WRITE_DATA:
+ b = *(uint8_t *)arg;
+ if (ioctl(fd, PPWDATA, &b) < 0)
+ return -ENOTSUP;
+ break;
+ case CHR_IOCTL_PP_READ_CONTROL:
+ if (ioctl(fd, PPRCONTROL, &b) < 0)
+ return -ENOTSUP;
+ /* Linux gives only the lowest bits, and no way to know data
+ direction! For better compatibility set the fixed upper
+ bits. */
+ *(uint8_t *)arg = b | 0xc0;
+ break;
+ case CHR_IOCTL_PP_WRITE_CONTROL:
+ b = *(uint8_t *)arg;
+ if (ioctl(fd, PPWCONTROL, &b) < 0)
+ return -ENOTSUP;
+ break;
+ case CHR_IOCTL_PP_READ_STATUS:
+ if (ioctl(fd, PPRSTATUS, &b) < 0)
+ return -ENOTSUP;
+ *(uint8_t *)arg = b;
+ break;
+ case CHR_IOCTL_PP_DATA_DIR:
+ if (ioctl(fd, PPDATADIR, (int *)arg) < 0)
+ return -ENOTSUP;
+ break;
+ case CHR_IOCTL_PP_EPP_READ_ADDR:
+ if (pp_hw_mode(drv, IEEE1284_MODE_EPP|IEEE1284_ADDR)) {
+ struct ParallelIOArg *parg = arg;
+ int n = read(fd, parg->buffer, parg->count);
+ if (n != parg->count) {
+ return -EIO;
+ }
+ }
+ break;
+ case CHR_IOCTL_PP_EPP_READ:
+ if (pp_hw_mode(drv, IEEE1284_MODE_EPP)) {
+ struct ParallelIOArg *parg = arg;
+ int n = read(fd, parg->buffer, parg->count);
+ if (n != parg->count) {
+ return -EIO;
+ }
+ }
+ break;
+ case CHR_IOCTL_PP_EPP_WRITE_ADDR:
+ if (pp_hw_mode(drv, IEEE1284_MODE_EPP|IEEE1284_ADDR)) {
+ struct ParallelIOArg *parg = arg;
+ int n = write(fd, parg->buffer, parg->count);
+ if (n != parg->count) {
+ return -EIO;
+ }
+ }
+ break;
+ case CHR_IOCTL_PP_EPP_WRITE:
+ if (pp_hw_mode(drv, IEEE1284_MODE_EPP)) {
+ struct ParallelIOArg *parg = arg;
+ int n = write(fd, parg->buffer, parg->count);
+ if (n != parg->count) {
+ return -EIO;
+ }
+ }
+ break;
+ default:
+ return -ENOTSUP;
+ }
+ return 0;
+}
+
+static void pp_close(CharDriverState *chr)
+{
+ ParallelCharDriver *drv = chr->opaque;
+ int fd = drv->fd;
+
+ pp_hw_mode(drv, IEEE1284_MODE_COMPAT);
+ ioctl(fd, PPRELEASE);
+ close(fd);
+ qemu_free(drv);
+}
+
+static CharDriverState *qemu_chr_open_pp(const char *filename)
+{
+ CharDriverState *chr;
+ ParallelCharDriver *drv;
+ int fd;
+
+ TFR(fd = open(filename, O_RDWR));
+ if (fd < 0)
+ return NULL;
+
+ if (ioctl(fd, PPCLAIM) < 0) {
+ close(fd);
+ return NULL;
+ }
+
+ drv = qemu_mallocz(sizeof(ParallelCharDriver));
+ if (!drv) {
+ close(fd);
+ return NULL;
+ }
+ drv->fd = fd;
+ drv->mode = IEEE1284_MODE_COMPAT;
+
+ chr = qemu_mallocz(sizeof(CharDriverState));
+ if (!chr) {
+ qemu_free(drv);
+ close(fd);
+ return NULL;
+ }
+ chr->chr_write = null_chr_write;
+ chr->chr_ioctl = pp_ioctl;
+ chr->chr_close = pp_close;
+ chr->opaque = drv;
+
+ qemu_chr_reset(chr);
+
+ return chr;
+}
+#endif /* __linux__ */
+
+#else /* _WIN32 */
+
+typedef struct {
+ int max_size;
+ HANDLE hcom, hrecv, hsend;
+ OVERLAPPED orecv, osend;
+ BOOL fpipe;
+ DWORD len;
+} WinCharState;
+
+#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);
+}
+
+static int win_chr_init(CharDriverState *chr, const char *filename)
+{
+ WinCharState *s = chr->opaque;
+ COMMCONFIG comcfg;
+ COMMTIMEOUTS cto = { 0, 0, 0, 0, 0};
+ COMSTAT comstat;
+ DWORD size;
+ DWORD err;
+
+ s->hsend = CreateEvent(NULL, TRUE, FALSE, NULL);
+ if (!s->hsend) {
+ fprintf(stderr, "Failed CreateEvent\n");
+ goto fail;
+ }
+ s->hrecv = CreateEvent(NULL, TRUE, FALSE, NULL);
+ if (!s->hrecv) {
+ fprintf(stderr, "Failed CreateEvent\n");
+ goto fail;
+ }
+
+ s->hcom = CreateFile(filename, GENERIC_READ|GENERIC_WRITE, 0, NULL,
+ OPEN_EXISTING, FILE_FLAG_OVERLAPPED, 0);
+ if (s->hcom == INVALID_HANDLE_VALUE) {
+ fprintf(stderr, "Failed CreateFile (%lu)\n", GetLastError());
+ s->hcom = NULL;
+ goto fail;
+ }
+
+ if (!SetupComm(s->hcom, NRECVBUF, NSENDBUF)) {
+ fprintf(stderr, "Failed SetupComm\n");
+ goto fail;
+ }
+
+ ZeroMemory(&comcfg, sizeof(COMMCONFIG));
+ size = sizeof(COMMCONFIG);
+ GetDefaultCommConfig(filename, &comcfg, &size);
+ comcfg.dcb.DCBlength = sizeof(DCB);
+ CommConfigDialog(filename, NULL, &comcfg);
+
+ if (!SetCommState(s->hcom, &comcfg.dcb)) {
+ fprintf(stderr, "Failed SetCommState\n");
+ goto fail;
+ }
+
+ if (!SetCommMask(s->hcom, EV_ERR)) {
+ fprintf(stderr, "Failed SetCommMask\n");
+ goto fail;
+ }
+
+ cto.ReadIntervalTimeout = MAXDWORD;
+ if (!SetCommTimeouts(s->hcom, &cto)) {
+ fprintf(stderr, "Failed SetCommTimeouts\n");
+ goto fail;
+ }
+
+ if (!ClearCommError(s->hcom, &err, &comstat)) {
+ fprintf(stderr, "Failed ClearCommError\n");
+ goto fail;
+ }
+ qemu_add_polling_cb(win_chr_poll, chr);
+ return 0;
+
+ fail:
+ win_chr_close(chr);
+ return -1;
+}
+
+static int win_chr_write(CharDriverState *chr, const uint8_t *buf, int len1)
+{
+ WinCharState *s = chr->opaque;
+ DWORD len, ret, size, err;
+
+ len = len1;
+ ZeroMemory(&s->osend, sizeof(s->osend));
+ s->osend.hEvent = s->hsend;
+ while (len > 0) {
+ if (s->hsend)
+ ret = WriteFile(s->hcom, buf, len, &size, &s->osend);
+ else
+ ret = WriteFile(s->hcom, buf, len, &size, NULL);
+ if (!ret) {
+ err = GetLastError();
+ if (err == ERROR_IO_PENDING) {
+ ret = GetOverlappedResult(s->hcom, &s->osend, &size, TRUE);
+ if (ret) {
+ buf += size;
+ len -= size;
+ } else {
+ break;
+ }
+ } else {
+ break;
+ }
+ } else {
+ buf += size;
+ len -= size;
+ }
+ }
+ return len1 - len;
+}
+
+static int win_chr_read_poll(CharDriverState *chr)
+{
+ WinCharState *s = chr->opaque;
+
+ s->max_size = qemu_chr_can_read(chr);
+ return s->max_size;
+}
+
+static void win_chr_readfile(CharDriverState *chr)
+{
+ WinCharState *s = chr->opaque;
+ int ret, err;
+ uint8_t buf[1024];
+ 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_read(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(const char *filename)
+{
+ CharDriverState *chr;
+ WinCharState *s;
+
+ chr = qemu_mallocz(sizeof(CharDriverState));
+ if (!chr)
+ return NULL;
+ s = qemu_mallocz(sizeof(WinCharState));
+ if (!s) {
+ free(chr);
+ return NULL;
+ }
+ chr->opaque = s;
+ chr->chr_write = win_chr_write;
+ chr->chr_close = win_chr_close;
+
+ if (win_chr_init(chr, filename) < 0) {
+ free(s);
+ free(chr);
+ return NULL;
+ }
+ qemu_chr_reset(chr);
+ return chr;
+}
+
+static int win_chr_pipe_poll(void *opaque)
+{
+ CharDriverState *chr = opaque;
+ WinCharState *s = chr->opaque;
+ DWORD size;
+
+ PeekNamedPipe(s->hcom, NULL, 0, NULL, &size, NULL);
+ if (size > 0) {
+ s->len = size;
+ win_chr_read_poll(chr);
+ win_chr_read(chr);
+ return 1;
+ }
+ return 0;
+}
+
+static int win_chr_pipe_init(CharDriverState *chr, const char *filename)
+{
+ WinCharState *s = chr->opaque;
+ OVERLAPPED ov;
+ int ret;
+ DWORD size;
+ char openname[256];
+
+ s->fpipe = TRUE;
+
+ s->hsend = CreateEvent(NULL, TRUE, FALSE, NULL);
+ if (!s->hsend) {
+ fprintf(stderr, "Failed CreateEvent\n");
+ goto fail;
+ }
+ s->hrecv = CreateEvent(NULL, TRUE, FALSE, NULL);
+ if (!s->hrecv) {
+ fprintf(stderr, "Failed CreateEvent\n");
+ goto fail;
+ }
+
+ snprintf(openname, sizeof(openname), "\\\\.\\pipe\\%s", filename);
+ s->hcom = CreateNamedPipe(openname, PIPE_ACCESS_DUPLEX | FILE_FLAG_OVERLAPPED,
+ PIPE_TYPE_BYTE | PIPE_READMODE_BYTE |
+ PIPE_WAIT,
+ MAXCONNECT, NSENDBUF, NRECVBUF, NTIMEOUT, NULL);
+ if (s->hcom == INVALID_HANDLE_VALUE) {
+ fprintf(stderr, "Failed CreateNamedPipe (%lu)\n", GetLastError());
+ s->hcom = NULL;
+ goto fail;
+ }
+
+ ZeroMemory(&ov, sizeof(ov));
+ ov.hEvent = CreateEvent(NULL, TRUE, FALSE, NULL);
+ ret = ConnectNamedPipe(s->hcom, &ov);
+ if (ret) {
+ fprintf(stderr, "Failed ConnectNamedPipe\n");
+ goto fail;
+ }
+
+ ret = GetOverlappedResult(s->hcom, &ov, &size, TRUE);
+ if (!ret) {
+ fprintf(stderr, "Failed GetOverlappedResult\n");
+ if (ov.hEvent) {
+ CloseHandle(ov.hEvent);
+ ov.hEvent = NULL;
+ }
+ goto fail;
+ }
+
+ if (ov.hEvent) {
+ CloseHandle(ov.hEvent);
+ ov.hEvent = NULL;
+ }
+ qemu_add_polling_cb(win_chr_pipe_poll, chr);
+ return 0;
+
+ fail:
+ win_chr_close(chr);
+ return -1;
+}
+
+
+static CharDriverState *qemu_chr_open_win_pipe(const char *filename)
+{
+ CharDriverState *chr;
+ WinCharState *s;
+
+ chr = qemu_mallocz(sizeof(CharDriverState));
+ if (!chr)
+ return NULL;
+ s = qemu_mallocz(sizeof(WinCharState));
+ if (!s) {
+ free(chr);
+ return NULL;
+ }
+ chr->opaque = s;
+ chr->chr_write = win_chr_write;
+ chr->chr_close = win_chr_close;
+
+ if (win_chr_pipe_init(chr, filename) < 0) {
+ free(s);
+ free(chr);
+ return NULL;
+ }
+ qemu_chr_reset(chr);
+ return chr;
+}
+
+static CharDriverState *qemu_chr_open_win_file(HANDLE fd_out)
+{
+ CharDriverState *chr;
+ WinCharState *s;
+
+ chr = qemu_mallocz(sizeof(CharDriverState));
+ if (!chr)
+ return NULL;
+ s = qemu_mallocz(sizeof(WinCharState));
+ if (!s) {
+ free(chr);
+ return NULL;
+ }
+ s->hcom = fd_out;
+ chr->opaque = s;
+ chr->chr_write = win_chr_write;
+ qemu_chr_reset(chr);
+ return chr;
+}
+
+static CharDriverState *qemu_chr_open_win_con(const char *filename)
+{
+ return qemu_chr_open_win_file(GetStdHandle(STD_OUTPUT_HANDLE));
+}
+
+static CharDriverState *qemu_chr_open_win_file_out(const char *file_out)
+{
+ HANDLE fd_out;
+
+ fd_out = CreateFile(file_out, GENERIC_WRITE, FILE_SHARE_READ, NULL,
+ OPEN_ALWAYS, FILE_ATTRIBUTE_NORMAL, NULL);
+ if (fd_out == INVALID_HANDLE_VALUE)
+ return NULL;
+
+ return qemu_chr_open_win_file(fd_out);
+}
+#endif /* !_WIN32 */
+
+/***********************************************************/
+/* UDP Net console */
+
+typedef struct {
+ int fd;
+ struct sockaddr_in daddr;
+ uint8_t buf[1024];
+ int bufcnt;
+ int bufptr;
+ int max_size;
+} NetCharDriver;
+
+static int udp_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
+{
+ NetCharDriver *s = chr->opaque;
+
+ return sendto(s->fd, buf, len, 0,
+ (struct sockaddr *)&s->daddr, sizeof(struct sockaddr_in));
+}
+
+static int udp_chr_read_poll(void *opaque)
+{
+ CharDriverState *chr = opaque;
+ NetCharDriver *s = chr->opaque;
+
+ s->max_size = qemu_chr_can_read(chr);
+
+ /* If there were any stray characters in the queue process them
+ * first
+ */
+ while (s->max_size > 0 && s->bufptr < s->bufcnt) {
+ qemu_chr_read(chr, &s->buf[s->bufptr], 1);
+ s->bufptr++;
+ s->max_size = qemu_chr_can_read(chr);
+ }
+ return s->max_size;
+}
+
+static void udp_chr_read(void *opaque)
+{
+ CharDriverState *chr = opaque;
+ NetCharDriver *s = chr->opaque;
+
+ if (s->max_size == 0)
+ return;
+ s->bufcnt = recv(s->fd, s->buf, sizeof(s->buf), 0);
+ s->bufptr = s->bufcnt;
+ if (s->bufcnt <= 0)
+ return;
+
+ s->bufptr = 0;
+ while (s->max_size > 0 && s->bufptr < s->bufcnt) {
+ qemu_chr_read(chr, &s->buf[s->bufptr], 1);
+ s->bufptr++;
+ s->max_size = qemu_chr_can_read(chr);
+ }
+}
+
+static void udp_chr_update_read_handler(CharDriverState *chr)
+{
+ NetCharDriver *s = chr->opaque;
+
+ if (s->fd >= 0) {
+ qemu_set_fd_handler2(s->fd, udp_chr_read_poll,
+ udp_chr_read, NULL, chr);
+ }
+}
+
+static CharDriverState *qemu_chr_open_udp(const char *def)
+{
+ CharDriverState *chr = NULL;
+ NetCharDriver *s = NULL;
+ int fd = -1;
+ struct sockaddr_in saddr;
+
+ chr = qemu_mallocz(sizeof(CharDriverState));
+ if (!chr)
+ goto return_err;
+ s = qemu_mallocz(sizeof(NetCharDriver));
+ if (!s)
+ goto return_err;
+
+ fd = socket(PF_INET, SOCK_DGRAM, 0);
+ if (fd < 0) {
+ perror("socket(PF_INET, SOCK_DGRAM)");
+ goto return_err;
+ }
+
+ if (parse_host_src_port(&s->daddr, &saddr, def) < 0) {
+ printf("Could not parse: %s\n", def);
+ goto return_err;
+ }
+
+ if (bind(fd, (struct sockaddr *)&saddr, sizeof(saddr)) < 0)
+ {
+ perror("bind");
+ goto return_err;
+ }
+
+ s->fd = fd;
+ s->bufcnt = 0;
+ s->bufptr = 0;
+ chr->opaque = s;
+ chr->chr_write = udp_chr_write;
+ chr->chr_update_read_handler = udp_chr_update_read_handler;
+ return chr;
+
+return_err:
+ if (chr)
+ free(chr);
+ if (s)
+ free(s);
+ if (fd >= 0)
+ closesocket(fd);
+ return NULL;
+}
+
+/***********************************************************/
+/* TCP Net console */
+
+typedef struct {
+ int fd, listen_fd;
+ int connected;
+ int max_size;
+ int do_telnetopt;
+ int do_nodelay;
+ int is_unix;
+} TCPCharDriver;
+
+static void tcp_chr_accept(void *opaque);
+
+static int tcp_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
+{
+ TCPCharDriver *s = chr->opaque;
+ if (s->connected) {
+ return send_all(s->fd, buf, len);
+ } else {
+ /* XXX: indicate an error ? */
+ return len;
+ }
+}
+
+static int tcp_chr_read_poll(void *opaque)
+{
+ CharDriverState *chr = opaque;
+ TCPCharDriver *s = chr->opaque;
+ if (!s->connected)
+ return 0;
+ s->max_size = qemu_chr_can_read(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_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 void tcp_chr_read(void *opaque)
+{
+ CharDriverState *chr = opaque;
+ TCPCharDriver *s = chr->opaque;
+ uint8_t buf[1024];
+ int len, size;
+
+ if (!s->connected || s->max_size <= 0)
+ return;
+ len = sizeof(buf);
+ if (len > s->max_size)
+ len = s->max_size;
+ size = recv(s->fd, buf, len, 0);
+ if (size == 0) {
+ /* connection closed */
+ s->connected = 0;
+ if (s->listen_fd >= 0) {
+ qemu_set_fd_handler(s->listen_fd, tcp_chr_accept, NULL, chr);
+ }
+ qemu_set_fd_handler(s->fd, NULL, NULL, NULL);
+ closesocket(s->fd);
+ s->fd = -1;
+ } else if (size > 0) {
+ if (s->do_telnetopt)
+ tcp_chr_process_IAC_bytes(chr, s, buf, &size);
+ if (size > 0)
+ qemu_chr_read(chr, buf, size);
+ }
+}
+
+static void tcp_chr_connect(void *opaque)
+{
+ CharDriverState *chr = opaque;
+ TCPCharDriver *s = chr->opaque;
+
+ s->connected = 1;
+ qemu_set_fd_handler2(s->fd, tcp_chr_read_poll,
+ tcp_chr_read, NULL, chr);
+ qemu_chr_reset(chr);
+}
+
+#define IACSET(x,a,b,c) x[0] = a; x[1] = b; x[2] = c;
+static void tcp_chr_telnet_init(int fd)
+{
+ char buf[3];
+ /* Send the telnet negotion to put telnet in binary, no echo, single char mode */
+ IACSET(buf, 0xff, 0xfb, 0x01); /* IAC WILL ECHO */
+ send(fd, (char *)buf, 3, 0);
+ IACSET(buf, 0xff, 0xfb, 0x03); /* IAC WILL Suppress go ahead */
+ send(fd, (char *)buf, 3, 0);
+ IACSET(buf, 0xff, 0xfb, 0x00); /* IAC WILL Binary */
+ send(fd, (char *)buf, 3, 0);
+ IACSET(buf, 0xff, 0xfd, 0x00); /* IAC DO Binary */
+ send(fd, (char *)buf, 3, 0);
+}
+
+static void socket_set_nodelay(int fd)
+{
+ int val = 1;
+ setsockopt(fd, IPPROTO_TCP, TCP_NODELAY, (char *)&val, sizeof(val));
+}
+
+static void tcp_chr_accept(void *opaque)
+{
+ CharDriverState *chr = opaque;
+ TCPCharDriver *s = chr->opaque;
+ struct sockaddr_in saddr;
+#ifndef _WIN32
+ struct sockaddr_un uaddr;
+#endif
+ struct sockaddr *addr;
+ socklen_t len;
+ int fd;
+
+ for(;;) {
+#ifndef _WIN32
+ if (s->is_unix) {
+ len = sizeof(uaddr);
+ addr = (struct sockaddr *)&uaddr;
+ } else
+#endif
+ {
+ len = sizeof(saddr);
+ addr = (struct sockaddr *)&saddr;
+ }
+ fd = accept(s->listen_fd, addr, &len);
+ if (fd < 0 && errno != EINTR) {
+ return;
+ } else if (fd >= 0) {
+ if (s->do_telnetopt)
+ tcp_chr_telnet_init(fd);
+ break;
+ }
+ }
+ socket_set_nonblock(fd);
+ if (s->do_nodelay)
+ socket_set_nodelay(fd);
+ s->fd = fd;
+ qemu_set_fd_handler(s->listen_fd, NULL, NULL, NULL);
+ tcp_chr_connect(chr);
+}
+
+static void tcp_chr_close(CharDriverState *chr)
+{
+ TCPCharDriver *s = chr->opaque;
+ if (s->fd >= 0)
+ closesocket(s->fd);
+ if (s->listen_fd >= 0)
+ closesocket(s->listen_fd);
+ qemu_free(s);
+}
+
+static CharDriverState *qemu_chr_open_tcp(const char *host_str,
+ int is_telnet,
+ int is_unix)
+{
+ CharDriverState *chr = NULL;
+ TCPCharDriver *s = NULL;
+ int fd = -1, ret, err, val;
+ int is_listen = 0;
+ int is_waitconnect = 1;
+ int do_nodelay = 0;
+ const char *ptr;
+ struct sockaddr_in saddr;
+#ifndef _WIN32
+ struct sockaddr_un uaddr;
+#endif
+ struct sockaddr *addr;
+ socklen_t addrlen;
+
+#ifndef _WIN32
+ if (is_unix) {
+ addr = (struct sockaddr *)&uaddr;
+ addrlen = sizeof(uaddr);
+ if (parse_unix_path(&uaddr, host_str) < 0)
+ goto fail;
+ } else
+#endif
+ {
+ addr = (struct sockaddr *)&saddr;
+ addrlen = sizeof(saddr);
+ if (parse_host_port(&saddr, host_str) < 0)
+ goto fail;
+ }
+
+ ptr = host_str;
+ while((ptr = strchr(ptr,','))) {
+ ptr++;
+ if (!strncmp(ptr,"server",6)) {
+ is_listen = 1;
+ } else if (!strncmp(ptr,"nowait",6)) {
+ is_waitconnect = 0;
+ } else if (!strncmp(ptr,"nodelay",6)) {
+ do_nodelay = 1;
+ } else {
+ printf("Unknown option: %s\n", ptr);
+ goto fail;
+ }
+ }
+ if (!is_listen)
+ is_waitconnect = 0;
+
+ chr = qemu_mallocz(sizeof(CharDriverState));
+ if (!chr)
+ goto fail;
+ s = qemu_mallocz(sizeof(TCPCharDriver));
+ if (!s)
+ goto fail;
+
+#ifndef _WIN32
+ if (is_unix)
+ fd = socket(PF_UNIX, SOCK_STREAM, 0);
+ else
+#endif
+ fd = socket(PF_INET, SOCK_STREAM, 0);
+
+ if (fd < 0)
+ goto fail;
+
+ if (!is_waitconnect)
+ socket_set_nonblock(fd);
+
+ s->connected = 0;
+ s->fd = -1;
+ s->listen_fd = -1;
+ s->is_unix = is_unix;
+ s->do_nodelay = do_nodelay && !is_unix;
+
+ chr->opaque = s;
+ chr->chr_write = tcp_chr_write;
+ chr->chr_close = tcp_chr_close;
+
+ if (is_listen) {
+ /* allow fast reuse */
+#ifndef _WIN32
+ if (is_unix) {
+ char path[109];
+ pstrcpy(path, sizeof(path), uaddr.sun_path);
+ unlink(path);
+ } else
+#endif
+ {
+ val = 1;
+ setsockopt(fd, SOL_SOCKET, SO_REUSEADDR, (const char *)&val, sizeof(val));
+ }
+
+ ret = bind(fd, addr, addrlen);
+ if (ret < 0)
+ goto fail;
+
+ ret = listen(fd, 0);
+ if (ret < 0)
+ goto fail;
+
+ s->listen_fd = fd;
+ qemu_set_fd_handler(s->listen_fd, tcp_chr_accept, NULL, chr);
+ if (is_telnet)
+ s->do_telnetopt = 1;
+ } else {
+ for(;;) {
+ ret = connect(fd, addr, addrlen);
+ if (ret < 0) {
+ err = socket_error();
+ if (err == EINTR || err == EWOULDBLOCK) {
+ } else if (err == EINPROGRESS) {
+ break;
+#ifdef _WIN32
+ } else if (err == WSAEALREADY) {
+ break;
+#endif
+ } else {
+ goto fail;
+ }
+ } else {
+ s->connected = 1;
+ break;
+ }
+ }
+ s->fd = fd;
+ socket_set_nodelay(fd);
+ if (s->connected)
+ tcp_chr_connect(chr);
+ else
+ qemu_set_fd_handler(s->fd, NULL, tcp_chr_connect, chr);
+ }
+
+ if (is_listen && is_waitconnect) {
+ printf("QEMU waiting for connection on: %s\n", host_str);
+ tcp_chr_accept(chr);
+ socket_set_nonblock(s->listen_fd);
+ }
+
+ return chr;
+ fail:
+ if (fd >= 0)
+ closesocket(fd);
+ qemu_free(s);
+ qemu_free(chr);
+ return NULL;
+}
+
+static TAILQ_HEAD(CharDriverStateHead, CharDriverState) chardevs
+= TAILQ_HEAD_INITIALIZER(chardevs);
+
+CharDriverState *qemu_chr_open(const char *label, const char *filename)
+{
+ const char *p;
+ CharDriverState *chr;
+
+ if (!strcmp(filename, "vc")) {
+ chr = text_console_init(&display_state, 0);
+ } else
+ if (strstart(filename, "vc:", &p)) {
+ chr = text_console_init(&display_state, p);
+ } else
+ if (!strcmp(filename, "null")) {
+ chr = qemu_chr_open_null();
+ } else
+ if (strstart(filename, "tcp:", &p)) {
+ chr = qemu_chr_open_tcp(p, 0, 0);
+ } else
+ if (strstart(filename, "telnet:", &p)) {
+ chr = qemu_chr_open_tcp(p, 1, 0);
+ } else
+ if (strstart(filename, "udp:", &p)) {
+ chr = qemu_chr_open_udp(p);
+ } else
+ if (strstart(filename, "mon:", &p)) {
+ chr = qemu_chr_open(label, p);
+ if (chr) {
+ chr = qemu_chr_open_mux(chr);
+ monitor_init(chr, !nographic);
+ } else {
+ printf("Unable to open driver: %s\n", p);
+ }
+ } else
+#ifndef _WIN32
+ if (strstart(filename, "unix:", &p)) {
+ chr = qemu_chr_open_tcp(p, 0, 1);
+ } else if (strstart(filename, "file:", &p)) {
+ chr = qemu_chr_open_file_out(p);
+ } else if (strstart(filename, "pipe:", &p)) {
+ chr = qemu_chr_open_pipe(p);
+ } else if (!strcmp(filename, "pty")) {
+ chr = qemu_chr_open_pty();
+ } else if (!strcmp(filename, "stdio")) {
+ chr = qemu_chr_open_stdio();
+ } else
+#if defined(__linux__)
+ if (strstart(filename, "/dev/parport", NULL)) {
+ chr = qemu_chr_open_pp(filename);
+ } else
+#endif
+#if defined(__linux__) || defined(__sun__) || defined(__FreeBSD__) \
+ || defined(__NetBSD__) || defined(__OpenBSD__)
+ if (strstart(filename, "/dev/", NULL)) {
+ chr = qemu_chr_open_tty(filename);
+ } else
+#endif
+#else /* !_WIN32 */
+ if (strstart(filename, "COM", NULL)) {
+ chr = qemu_chr_open_win(filename);
+ } else
+ if (strstart(filename, "pipe:", &p)) {
+ chr = qemu_chr_open_win_pipe(p);
+ } else
+ if (strstart(filename, "con:", NULL)) {
+ chr = qemu_chr_open_win_con(filename);
+ } else
+ if (strstart(filename, "file:", &p)) {
+ chr = qemu_chr_open_win_file_out(p);
+ } else
+#endif
+#ifdef CONFIG_BRLAPI
+ if (!strcmp(filename, "braille")) {
+ chr = chr_baum_init();
+ } else
+#endif
+ {
+ chr = NULL;
+ }
+
+ if (chr) {
+ if (!chr->filename)
+ chr->filename = qemu_strdup(filename);
+ chr->label = qemu_strdup(label);
+ TAILQ_INSERT_TAIL(&chardevs, chr, next);
+ }
+ return chr;
+}
+
+void qemu_chr_close(CharDriverState *chr)
+{
+ TAILQ_REMOVE(&chardevs, chr, next);
+ if (chr->chr_close)
+ chr->chr_close(chr);
+ qemu_free(chr->filename);
+ qemu_free(chr->label);
+ qemu_free(chr);
+}
+
+void qemu_chr_info(void)
+{
+ CharDriverState *chr;
+
+ TAILQ_FOREACH(chr, &chardevs, next) {
+ term_printf("%s: filename=%s\n", chr->label, chr->filename);
+ }
+}
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-24 01:45:25 +0000