diff options
| author | Marc-André Lureau <marcandre.lureau@redhat.com> | 2016-12-10 00:29:03 +0300 |
|---|---|---|
| committer | Marc-André Lureau <marcandre.lureau@redhat.com> | 2017-01-31 13:03:46 +0400 |
| commit | 178fe0ae9d879777d31b0494459f172fa5db064e (patch) | |
| tree | 027664620b89d6f5587ccee5a15c781031c8d924 /chardev | |
| parent | 0b663b7d77f1a2170fe30a91e3d6de1bb769a378 (diff) | |
| download | qemu-178fe0ae9d879777d31b0494459f172fa5db064e.tar.gz | |
char: move to chardev/
The following commits will split char.c in several files. Let's put them
in a subdirectory.
Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Diffstat (limited to 'chardev')
| -rw-r--r-- | chardev/Makefile.objs | 1 | ||||
| -rw-r--r-- | chardev/char.c | 5132 |
2 files changed, 5133 insertions, 0 deletions
diff --git a/chardev/Makefile.objs b/chardev/Makefile.objs new file mode 100644 index 0000000000..3fc5539518 --- /dev/null +++ b/chardev/Makefile.objs @@ -0,0 +1 @@ +common-obj-y += char.o diff --git a/chardev/char.c b/chardev/char.c new file mode 100644 index 0000000000..15f4a853bc --- /dev/null +++ b/chardev/char.c @@ -0,0 +1,5132 @@ +/* + * 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/clone-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 "qemu/help_option.h" + +#include <zlib.h> + +#ifndef _WIN32 +#include <sys/times.h> +#include <sys/wait.h> +#include <termios.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 + +typedef struct MuxChardev MuxChardev; + +/***********************************************************/ +/* 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(ChardevHead, Chardev) chardevs = + QTAILQ_HEAD_INITIALIZER(chardevs); + +void qemu_chr_be_event(Chardev *s, int event) +{ + CharBackend *be = s->be; + + /* 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 (!be || !be->chr_event) { + return; + } + + be->chr_event(be->opaque, event); +} + +void qemu_chr_be_generic_open(Chardev *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(Chardev *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(Chardev *s, + const uint8_t *buf, int len, int *offset) +{ + ChardevClass *cc = CHARDEV_GET_CLASS(s); + int res = 0; + *offset = 0; + + qemu_mutex_lock(&s->chr_write_lock); + while (*offset < len) { + retry: + res = cc->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; +} + +static bool qemu_chr_replay(Chardev *chr) +{ + return qemu_chr_has_feature(chr, QEMU_CHAR_FEATURE_REPLAY); +} + +int qemu_chr_fe_write(CharBackend *be, const uint8_t *buf, int len) +{ + Chardev *s = be->chr; + ChardevClass *cc; + int ret; + + if (!s) { + return 0; + } + + if (qemu_chr_replay(s) && 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; + } + + cc = CHARDEV_GET_CLASS(s); + qemu_mutex_lock(&s->chr_write_lock); + ret = cc->chr_write(s, buf, len); + + if (ret > 0) { + qemu_chr_fe_write_log(s, buf, ret); + } + + qemu_mutex_unlock(&s->chr_write_lock); + + if (qemu_chr_replay(s) && replay_mode == REPLAY_MODE_RECORD) { + replay_char_write_event_save(ret, ret < 0 ? 0 : ret); + } + + return ret; +} + +static int qemu_chr_write_all(Chardev *s, const uint8_t *buf, int len) +{ + int offset; + int res; + + if (qemu_chr_replay(s) && 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 (qemu_chr_replay(s) && replay_mode == REPLAY_MODE_RECORD) { + replay_char_write_event_save(res, offset); + } + + if (res < 0) { + return res; + } + return offset; +} + +int qemu_chr_fe_write_all(CharBackend *be, const uint8_t *buf, int len) +{ + Chardev *s = be->chr; + + if (!s) { + return 0; + } + + return qemu_chr_write_all(s, buf, len); +} + +int qemu_chr_fe_read_all(CharBackend *be, uint8_t *buf, int len) +{ + Chardev *s = be->chr; + int offset = 0, counter = 10; + int res; + + if (!s || !CHARDEV_GET_CLASS(s)->chr_sync_read) { + return 0; + } + + if (qemu_chr_replay(s) && replay_mode == REPLAY_MODE_PLAY) { + return replay_char_read_all_load(buf); + } + + while (offset < len) { + retry: + res = CHARDEV_GET_CLASS(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 (qemu_chr_replay(s) && replay_mode == REPLAY_MODE_RECORD) { + replay_char_read_all_save_error(res); + } + return res; + } + + offset += res; + + if (!counter--) { + break; + } + } + + if (qemu_chr_replay(s) && replay_mode == REPLAY_MODE_RECORD) { + replay_char_read_all_save_buf(buf, offset); + } + return offset; +} + +int qemu_chr_fe_ioctl(CharBackend *be, int cmd, void *arg) +{ + Chardev *s = be->chr; + int res; + + if (!s || !CHARDEV_GET_CLASS(s)->chr_ioctl || qemu_chr_replay(s)) { + res = -ENOTSUP; + } else { + res = CHARDEV_GET_CLASS(s)->chr_ioctl(s, cmd, arg); + } + + return res; +} + +int qemu_chr_be_can_write(Chardev *s) +{ + CharBackend *be = s->be; + + if (!be || !be->chr_can_read) { + return 0; + } + + return be->chr_can_read(be->opaque); +} + +void qemu_chr_be_write_impl(Chardev *s, uint8_t *buf, int len) +{ + CharBackend *be = s->be; + + if (be && be->chr_read) { + be->chr_read(be->opaque, buf, len); + } +} + +void qemu_chr_be_write(Chardev *s, uint8_t *buf, int len) +{ + if (qemu_chr_replay(s)) { + 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(CharBackend *be) +{ + Chardev *s = be->chr; + int fd; + int res = (qemu_chr_fe_get_msgfds(be, &fd, 1) == 1) ? fd : -1; + if (s && qemu_chr_replay(s)) { + error_report("Replay: get msgfd is not supported " + "for serial devices yet"); + exit(1); + } + return res; +} + +int qemu_chr_fe_get_msgfds(CharBackend *be, int *fds, int len) +{ + Chardev *s = be->chr; + + if (!s) { + return -1; + } + + return CHARDEV_GET_CLASS(s)->get_msgfds ? + CHARDEV_GET_CLASS(s)->get_msgfds(s, fds, len) : -1; +} + +int qemu_chr_fe_set_msgfds(CharBackend *be, int *fds, int num) +{ + Chardev *s = be->chr; + + if (!s) { + return -1; + } + + return CHARDEV_GET_CLASS(s)->set_msgfds ? + CHARDEV_GET_CLASS(s)->set_msgfds(s, fds, num) : -1; +} + +int qemu_chr_add_client(Chardev *s, int fd) +{ + return CHARDEV_GET_CLASS(s)->chr_add_client ? + CHARDEV_GET_CLASS(s)->chr_add_client(s, fd) : -1; +} + +void qemu_chr_fe_accept_input(CharBackend *be) +{ + Chardev *s = be->chr; + + if (!s) { + return; + } + + if (CHARDEV_GET_CLASS(s)->chr_accept_input) { + CHARDEV_GET_CLASS(s)->chr_accept_input(s); + } + qemu_notify_event(); +} + +void qemu_chr_fe_printf(CharBackend *be, const char *fmt, ...) +{ + char buf[READ_BUF_LEN]; + va_list ap; + va_start(ap, fmt); + vsnprintf(buf, sizeof(buf), fmt, ap); + /* XXX this blocks entire thread. Rewrite to use + * qemu_chr_fe_write and background I/O callbacks */ + qemu_chr_fe_write_all(be, (uint8_t *)buf, strlen(buf)); + va_end(ap); +} + +static void remove_fd_in_watch(Chardev *chr); +static void mux_chr_set_handlers(Chardev *chr, GMainContext *context); +static void mux_set_focus(Chardev *chr, int focus); + +static void qemu_char_open(Chardev *chr, ChardevBackend *backend, + bool *be_opened, Error **errp) +{ + ChardevClass *cc = CHARDEV_GET_CLASS(chr); + /* Any ChardevCommon member would work */ + ChardevCommon *common = backend ? backend->u.null.data : NULL; + + if (common && common->has_logfile) { + int flags = O_WRONLY | O_CREAT; + if (common->has_logappend && + common->logappend) { + flags |= O_APPEND; + } else { + flags |= O_TRUNC; + } + chr->logfd = qemu_open(common->logfile, flags, 0666); + if (chr->logfd < 0) { + error_setg_errno(errp, errno, + "Unable to open logfile %s", + common->logfile); + return; + } + } + + if (cc->open) { + cc->open(chr, backend, be_opened, errp); + } +} + +static void char_init(Object *obj) +{ + Chardev *chr = CHARDEV(obj); + + chr->logfd = -1; + qemu_mutex_init(&chr->chr_write_lock); +} + +static void char_finalize(Object *obj) +{ + Chardev *chr = CHARDEV(obj); + + if (chr->be) { + chr->be->chr = NULL; + } + g_free(chr->filename); + g_free(chr->label); + if (chr->logfd != -1) { + close(chr->logfd); + } + qemu_mutex_destroy(&chr->chr_write_lock); +} + +static const TypeInfo char_type_info = { + .name = TYPE_CHARDEV, + .parent = TYPE_OBJECT, + .instance_size = sizeof(Chardev), + .instance_init = char_init, + .instance_finalize = char_finalize, + .abstract = true, + .class_size = sizeof(ChardevClass), +}; + +static int null_chr_write(Chardev *chr, const uint8_t *buf, int len) +{ + return len; +} + +static void null_chr_open(Chardev *chr, + ChardevBackend *backend, + bool *be_opened, + Error **errp) +{ + *be_opened = false; +} + +static void char_null_class_init(ObjectClass *oc, void *data) +{ + ChardevClass *cc = CHARDEV_CLASS(oc); + + cc->open = null_chr_open; + cc->chr_write = null_chr_write; +} + +static const TypeInfo char_null_type_info = { + .name = TYPE_CHARDEV_NULL, + .parent = TYPE_CHARDEV, + .instance_size = sizeof(Chardev), + .class_init = char_null_class_init, +}; + +/* 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) +struct MuxChardev { + Chardev parent; + CharBackend *backends[MAX_MUX]; + CharBackend chr; + 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 Chardev chr_write_lock. */ + int linestart; + int64_t timestamps_start; +}; + +#define MUX_CHARDEV(obj) OBJECT_CHECK(MuxChardev, (obj), TYPE_CHARDEV_MUX) + +/* Called with chr_write_lock held. */ +static int mux_chr_write(Chardev *chr, const uint8_t *buf, int len) +{ + MuxChardev *d = MUX_CHARDEV(chr); + int ret; + if (!d->timestamps) { + ret = qemu_chr_fe_write(&d->chr, buf, len); + } else { + int i; + + ret = 0; + for (i = 0; i < len; i++) { + if (d->linestart) { + char buf1[64]; + int64_t ti; + int secs; + + ti = qemu_clock_get_ms(QEMU_CLOCK_REALTIME); + if (d->timestamps_start == -1) + d->timestamps_start = ti; + ti -= d->timestamps_start; + secs = ti / 1000; + snprintf(buf1, sizeof(buf1), + "[%02d:%02d:%02d.%03d] ", + secs / 3600, + (secs / 60) % 60, + secs % 60, + (int)(ti % 1000)); + /* XXX this blocks entire thread. Rewrite to use + * qemu_chr_fe_write and background I/O callbacks */ + qemu_chr_fe_write_all(&d->chr, + (uint8_t *)buf1, strlen(buf1)); + d->linestart = 0; + } + ret += qemu_chr_fe_write(&d->chr, 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(Chardev *chr) +{ + int i, j; + char ebuf[15] = "Escape-Char"; + char cbuf[50] = "\n\r"; + + if (term_escape_char > 0 && term_escape_char < 26) { + snprintf(cbuf, sizeof(cbuf), "\n\r"); + snprintf(ebuf, sizeof(ebuf), "C-%c", term_escape_char - 1 + 'a'); + } else { + snprintf(cbuf, sizeof(cbuf), + "\n\rEscape-Char set to Ascii: 0x%02x\n\r\n\r", + term_escape_char); + } + /* XXX this blocks entire thread. Rewrite to use + * qemu_chr_fe_write and background I/O callbacks */ + qemu_chr_write_all(chr, (uint8_t *)cbuf, strlen(cbuf)); + for (i = 0; mux_help[i] != NULL; i++) { + for (j=0; mux_help[i][j] != '\0'; j++) { + if (mux_help[i][j] == '%') + qemu_chr_write_all(chr, (uint8_t *)ebuf, strlen(ebuf)); + else + qemu_chr_write_all(chr, (uint8_t *)&mux_help[i][j], 1); + } + } +} + +static void mux_chr_send_event(MuxChardev *d, int mux_nr, int event) +{ + CharBackend *be = d->backends[mux_nr]; + + if (be && be->chr_event) { + be->chr_event(be->opaque, event); + } +} + +static int mux_proc_byte(Chardev *chr, MuxChardev *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_write_all(chr, (uint8_t *)term, strlen(term)); + exit(0); + break; + } + case 's': + blk_commit_all(); + break; + case 'b': + qemu_chr_be_event(chr, CHR_EVENT_BREAK); + break; + case 'c': + assert(d->mux_cnt > 0); /* handler registered with first fe */ + /* Switch to the next registered device */ + mux_set_focus(chr, (d->focus + 1) % d->mux_cnt); + 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(Chardev *chr) +{ + MuxChardev *d = MUX_CHARDEV(chr); + int m = d->focus; + CharBackend *be = d->backends[m]; + + while (be && d->prod[m] != d->cons[m] && + be->chr_can_read && be->chr_can_read(be->opaque)) { + be->chr_read(be->opaque, + &d->buffer[m][d->cons[m]++ & MUX_BUFFER_MASK], 1); + } +} + +static int mux_chr_can_read(void *opaque) +{ + MuxChardev *d = MUX_CHARDEV(opaque); + int m = d->focus; + CharBackend *be = d->backends[m]; + + if ((d->prod[m] - d->cons[m]) < MUX_BUFFER_SIZE) { + return 1; + } + + if (be && be->chr_can_read) { + return be->chr_can_read(be->opaque); + } + + return 0; +} + +static void mux_chr_read(void *opaque, const uint8_t *buf, int size) +{ + Chardev *chr = CHARDEV(opaque); + MuxChardev *d = MUX_CHARDEV(opaque); + int m = d->focus; + CharBackend *be = d->backends[m]; + 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] && + be && be->chr_can_read && + be->chr_can_read(be->opaque)) + be->chr_read(be->opaque, &buf[i], 1); + else + d->buffer[m][d->prod[m]++ & MUX_BUFFER_MASK] = buf[i]; + } +} + +static bool muxes_realized; + +static void mux_chr_event(void *opaque, int event) +{ + MuxChardev *d = MUX_CHARDEV(opaque); + int i; + + if (!muxes_realized) { + return; + } + + /* Send the event to all registered listeners */ + for (i = 0; i < d->mux_cnt; i++) + mux_chr_send_event(d, i, event); +} + +/** + * 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) +{ + Chardev *chr; + + QTAILQ_FOREACH(chr, &chardevs, next) { + if (CHARDEV_IS_MUX(chr)) { + MuxChardev *d = MUX_CHARDEV(chr); + 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(Chardev *s, GIOCondition cond) +{ + MuxChardev *d = MUX_CHARDEV(s); + Chardev *chr = qemu_chr_fe_get_driver(&d->chr); + ChardevClass *cc = CHARDEV_GET_CLASS(chr); + + if (!cc->chr_add_watch) { + return NULL; + } + + return cc->chr_add_watch(chr, cond); +} + +static void char_mux_finalize(Object *obj) +{ + MuxChardev *d = MUX_CHARDEV(obj); + int i; + + for (i = 0; i < d->mux_cnt; i++) { + CharBackend *be = d->backends[i]; + if (be) { + be->chr = NULL; + } + } + qemu_chr_fe_deinit(&d->chr); +} + +static void mux_chr_set_handlers(Chardev *chr, GMainContext *context) +{ + MuxChardev *d = MUX_CHARDEV(chr); + + /* Fix up the real driver with mux routines */ + qemu_chr_fe_set_handlers(&d->chr, + mux_chr_can_read, + mux_chr_read, + mux_chr_event, + chr, + context, true); +} + +static void mux_set_focus(Chardev *chr, int focus) +{ + MuxChardev *d = MUX_CHARDEV(chr); + + assert(focus >= 0); + assert(focus < d->mux_cnt); + + if (d->focus != -1) { + mux_chr_send_event(d, d->focus, CHR_EVENT_MUX_OUT); + } + + d->focus = focus; + chr->be = d->backends[focus]; + mux_chr_send_event(d, d->focus, CHR_EVENT_MUX_IN); +} + +static void qemu_chr_open_mux(Chardev *chr, + ChardevBackend *backend, + bool *be_opened, + Error **errp) +{ + ChardevMux *mux = backend->u.mux.data; + Chardev *drv; + MuxChardev *d = MUX_CHARDEV(chr); + + drv = qemu_chr_find(mux->chardev); + if (drv == NULL) { + error_setg(errp, "mux: base chardev %s not found", mux->chardev); + return; + } + + d->focus = -1; + /* only default to opened state if we've realized the initial + * set of muxes + */ + *be_opened = muxes_realized; + qemu_chr_fe_init(&d->chr, drv, errp); +} + +Chardev *qemu_chr_fe_get_driver(CharBackend *be) +{ + return be->chr; +} + +bool qemu_chr_fe_init(CharBackend *b, Chardev *s, Error **errp) +{ + int tag = 0; + + if (CHARDEV_IS_MUX(s)) { + MuxChardev *d = MUX_CHARDEV(s); + + if (d->mux_cnt >= MAX_MUX) { + goto unavailable; + } + + d->backends[d->mux_cnt] = b; + tag = d->mux_cnt++; + } else if (s->be) { + goto unavailable; + } else { + s->be = b; + } + + b->fe_open = false; + b->tag = tag; + b->chr = s; + return true; + +unavailable: + error_setg(errp, QERR_DEVICE_IN_USE, s->label); + return false; +} + +static bool qemu_chr_is_busy(Chardev *s) +{ + if (CHARDEV_IS_MUX(s)) { + MuxChardev *d = MUX_CHARDEV(s); + return d->mux_cnt >= 0; + } else { + return s->be != NULL; + } +} + +void qemu_chr_fe_deinit(CharBackend *b) +{ + assert(b); + + if (b->chr) { + qemu_chr_fe_set_handlers(b, NULL, NULL, NULL, NULL, NULL, true); + if (b->chr->be == b) { + b->chr->be = NULL; + } + if (CHARDEV_IS_MUX(b->chr)) { + MuxChardev *d = MUX_CHARDEV(b->chr); + d->backends[b->tag] = NULL; + } + b->chr = NULL; + } +} + +void qemu_chr_fe_set_handlers(CharBackend *b, + IOCanReadHandler *fd_can_read, + IOReadHandler *fd_read, + IOEventHandler *fd_event, + void *opaque, + GMainContext *context, + bool set_open) +{ + Chardev *s; + ChardevClass *cc; + int fe_open; + + s = b->chr; + if (!s) { + return; + } + + cc = CHARDEV_GET_CLASS(s); + if (!opaque && !fd_can_read && !fd_read && !fd_event) { + fe_open = 0; + remove_fd_in_watch(s); + } else { + fe_open = 1; + } + b->chr_can_read = fd_can_read; + b->chr_read = fd_read; + b->chr_event = fd_event; + b->opaque = opaque; + if (cc->chr_update_read_handler) { + cc->chr_update_read_handler(s, context); + } + + if (set_open) { + qemu_chr_fe_set_open(b, fe_open); + } + + if (fe_open) { + qemu_chr_fe_take_focus(b); + /* We're connecting to an already opened device, so let's make sure we + also get the open event */ + if (s->be_open) { + qemu_chr_be_generic_open(s); + } + } + + if (CHARDEV_IS_MUX(s)) { + mux_chr_set_handlers(s, context); + } +} + +void qemu_chr_fe_take_focus(CharBackend *b) +{ + if (!b->chr) { + return; + } + + if (CHARDEV_IS_MUX(b->chr)) { + mux_set_focus(b->chr, b->tag); + } +} + +typedef struct IOWatchPoll +{ + GSource parent; + + QIOChannel *ioc; + GSource *src; + + IOCanReadHandler *fd_can_read; + GSourceFunc fd_read; + void *opaque; + GMainContext *context; +} IOWatchPoll; + +static IOWatchPoll *io_watch_poll_from_source(GSource *source) +{ + return container_of(source, IOWatchPoll, parent); +} + +static gboolean io_watch_poll_prepare(GSource *source, + gint *timeout_) +{ + IOWatchPoll *iwp = io_watch_poll_from_source(source); + bool now_active = iwp->fd_can_read(iwp->opaque) > 0; + bool was_active = iwp->src != NULL; + if (was_active == now_active) { + return FALSE; + } + + if (now_active) { + iwp->src = qio_channel_create_watch( + iwp->ioc, G_IO_IN | G_IO_ERR | G_IO_HUP | G_IO_NVAL); + g_source_set_callback(iwp->src, iwp->fd_read, iwp->opaque, NULL); + g_source_attach(iwp->src, iwp->context); + } else { + g_source_destroy(iwp->src); + g_source_unref(iwp->src); + iwp->src = NULL; + } + return FALSE; +} + +static gboolean io_watch_poll_check(GSource *source) +{ + return FALSE; +} + +static gboolean io_watch_poll_dispatch(GSource *source, GSourceFunc callback, + gpointer user_data) +{ + abort(); +} + +static void io_watch_poll_finalize(GSource *source) +{ + /* Due to a glib bug, removing the last reference to a source + * inside a finalize callback causes recursive locking (and a + * deadlock). This is not a problem inside other callbacks, + * including dispatch callbacks, so we call io_remove_watch_poll + * to remove this source. At this point, iwp->src must + * be NULL, or we would leak it. + * + * This would be solved much more elegantly by child sources, + * but we support older glib versions that do not have them. + */ + IOWatchPoll *iwp = io_watch_poll_from_source(source); + assert(iwp->src == NULL); +} + +static GSourceFuncs io_watch_poll_funcs = { + .prepare = io_watch_poll_prepare, + .check = io_watch_poll_check, + .dispatch = io_watch_poll_dispatch, + .finalize = io_watch_poll_finalize, +}; + +/* Can only be used for read */ +static guint io_add_watch_poll(Chardev *chr, + QIOChannel *ioc, + IOCanReadHandler *fd_can_read, + QIOChannelFunc fd_read, + gpointer user_data, + GMainContext *context) +{ + IOWatchPoll *iwp; + int tag; + char *name; + + iwp = (IOWatchPoll *) g_source_new(&io_watch_poll_funcs, + sizeof(IOWatchPoll)); + iwp->fd_can_read = fd_can_read; + iwp->opaque = user_data; + iwp->ioc = ioc; + iwp->fd_read = (GSourceFunc) fd_read; + iwp->src = NULL; + iwp->context = context; + + name = g_strdup_printf("chardev-iowatch-%s", chr->label); + g_source_set_name((GSource *)iwp, name); + g_free(name); + + tag = g_source_attach(&iwp->parent, context); + g_source_unref(&iwp->parent); + return tag; +} + +static void io_remove_watch_poll(guint tag) +{ + GSource *source; + IOWatchPoll *iwp; + + g_return_if_fail (tag > 0); + + source = g_main_context_find_source_by_id(NULL, tag); + g_return_if_fail (source != NULL); + + iwp = io_watch_poll_from_source(source); + if (iwp->src) { + g_source_destroy(iwp->src); + g_source_unref(iwp->src); + iwp->src = NULL; + } + g_source_destroy(&iwp->parent); +} + +static void remove_fd_in_watch(Chardev *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 FDChardev { + Chardev parent; + Chardev *chr; + QIOChannel *ioc_in, *ioc_out; + int max_size; +} FDChardev; + +#define TYPE_CHARDEV_FD "chardev-fd" +#define FD_CHARDEV(obj) OBJECT_CHECK(FDChardev, (obj), TYPE_CHARDEV_FD) + +/* Called with chr_write_lock held. */ +static int fd_chr_write(Chardev *chr, const uint8_t *buf, int len) +{ + FDChardev *s = FD_CHARDEV(chr); + + return io_channel_send(s->ioc_out, buf, len); +} + +static gboolean fd_chr_read(QIOChannel *chan, GIOCondition cond, void *opaque) +{ + Chardev *chr = CHARDEV(opaque); + FDChardev *s = FD_CHARDEV(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) +{ + Chardev *chr = CHARDEV(opaque); + FDChardev *s = FD_CHARDEV(opaque); + + s->max_size = qemu_chr_be_can_write(chr); + return s->max_size; +} + +static GSource *fd_chr_add_watch(Chardev *chr, GIOCondition cond) +{ + FDChardev *s = FD_CHARDEV(chr); + return qio_channel_create_watch(s->ioc_out, cond); +} + +static void fd_chr_update_read_handler(Chardev *chr, + GMainContext *context) +{ + FDChardev *s = FD_CHARDEV(chr); + + remove_fd_in_watch(chr); + if (s->ioc_in) { + chr->fd_in_tag = io_add_watch_poll(chr, s->ioc_in, + fd_chr_read_poll, + fd_chr_read, chr, + context); + } +} + +static void char_fd_finalize(Object *obj) +{ + Chardev *chr = CHARDEV(obj); + FDChardev *s = FD_CHARDEV(obj); + + 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)); + } + + qemu_chr_be_event(chr, CHR_EVENT_CLOSED); +} + +/* open a character device to a unix fd */ +static void qemu_chr_open_fd(Chardev *chr, + int fd_in, int fd_out) +{ + FDChardev *s = FD_CHARDEV(chr); + char *name; + + s->ioc_in = QIO_CHANNEL(qio_channel_file_new_fd(fd_in)); + name = g_strdup_printf("chardev-file-in-%s", chr->label); + qio_channel_set_name(QIO_CHANNEL(s->ioc_in), name); + g_free(name); + s->ioc_out = QIO_CHANNEL(qio_channel_file_new_fd(fd_out)); + name = g_strdup_printf("chardev-file-out-%s", chr->label); + qio_channel_set_name(QIO_CHANNEL(s->ioc_out), name); + g_free(name); + qemu_set_nonblock(fd_out); + s->chr = chr; +} + +static void char_fd_class_init(ObjectClass *oc, void *data) +{ + ChardevClass *cc = CHARDEV_CLASS(oc); + + cc->chr_add_watch = fd_chr_add_watch; + cc->chr_write = fd_chr_write; + cc->chr_update_read_handler = fd_chr_update_read_handler; +} + +static const TypeInfo char_fd_type_info = { + .name = TYPE_CHARDEV_FD, + .parent = TYPE_CHARDEV, + .instance_size = sizeof(FDChardev), + .instance_finalize = char_fd_finalize, + .class_init = char_fd_class_init, + .abstract = true, +}; + +static void qemu_chr_open_pipe(Chardev *chr, + ChardevBackend *backend, + bool *be_opened, + Error **errp) +{ + ChardevHostdev *opts = backend->u.pipe.data; + int fd_in, fd_out; + char *filename_in; + char *filename_out; + const char *filename = opts->device; + + 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; + } + } + qemu_chr_open_fd(chr, fd_in, fd_out); +} + +/* init terminal so that we can grab keys */ +static struct termios oldtty; +static int old_fd0_flags; +static bool stdio_in_use; +static bool stdio_allow_signal; +static bool stdio_echo_state; + +static void qemu_chr_set_echo_stdio(Chardev *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(Chardev *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 char_stdio_finalize(Object *obj) +{ + term_exit(); +} + +static void qemu_chr_open_stdio(Chardev *chr, + ChardevBackend *backend, + bool *be_opened, + Error **errp) +{ + ChardevStdio *opts = backend->u.stdio.data; + struct sigaction act; + + if (is_daemonized()) { + error_setg(errp, "cannot use stdio with -daemonize"); + return; + } + + if (stdio_in_use) { + error_setg(errp, "cannot use stdio by multiple character devices"); + return; + } + + 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); + + qemu_chr_open_fd(chr, 0, 1); + + if (opts->has_signal) { + stdio_allow_signal = opts->signal; + } + qemu_chr_set_echo_stdio(chr, false); +} + +#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 { + Chardev parent; + QIOChannel *ioc; + int read_bytes; + + /* Protected by the Chardev chr_write_lock. */ + int connected; + guint timer_tag; + guint open_tag; +} PtyChardev; + +#define PTY_CHARDEV(obj) OBJECT_CHECK(PtyChardev, (obj), TYPE_CHARDEV_PTY) + +static void pty_chr_update_read_handler_locked(Chardev *chr); +static void pty_chr_state(Chardev *chr, int connected); + +static gboolean pty_chr_timer(gpointer opaque) +{ + struct Chardev *chr = CHARDEV(opaque); + PtyChardev *s = PTY_CHARDEV(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(Chardev *chr, int ms) +{ + PtyChardev *s = PTY_CHARDEV(chr); + char *name; + + if (s->timer_tag) { + g_source_remove(s->timer_tag); + s->timer_tag = 0; + } + + if (ms == 1000) { + name = g_strdup_printf("pty-timer-secs-%s", chr->label); + s->timer_tag = g_timeout_add_seconds(1, pty_chr_timer, chr); + } else { + name = g_strdup_printf("pty-timer-ms-%s", chr->label); + s->timer_tag = g_timeout_add(ms, pty_chr_timer, chr); + } + g_source_set_name_by_id(s->timer_tag, name); + g_free(name); +} + +/* Called with chr_write_lock held. */ +static void pty_chr_update_read_handler_locked(Chardev *chr) +{ + PtyChardev *s = PTY_CHARDEV(chr); + 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(Chardev *chr, + GMainContext *context) +{ + qemu_mutex_lock(&chr->chr_write_lock); + pty_chr_update_read_handler_locked(chr); + qemu_mutex_unlock(&chr->chr_write_lock); +} + +/* Called with chr_write_lock held. */ +static int char_pty_chr_write(Chardev *chr, const uint8_t *buf, int len) +{ + PtyChardev *s = PTY_CHARDEV(chr); + + 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(Chardev *chr, GIOCondition cond) +{ + PtyChardev *s = PTY_CHARDEV(chr); + if (!s->connected) { + return NULL; + } + return qio_channel_create_watch(s->ioc, cond); +} + +static int pty_chr_read_poll(void *opaque) +{ + Chardev *chr = CHARDEV(opaque); + PtyChardev *s = PTY_CHARDEV(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) +{ + Chardev *chr = CHARDEV(opaque); + PtyChardev *s = PTY_CHARDEV(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) +{ + Chardev *chr = CHARDEV(opaque); + PtyChardev *s = PTY_CHARDEV(opaque); + + s->open_tag = 0; + qemu_chr_be_generic_open(chr); + return FALSE; +} + +/* Called with chr_write_lock held. */ +static void pty_chr_state(Chardev *chr, int connected) +{ + PtyChardev *s = PTY_CHARDEV(chr); + + 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(chr, s->ioc, + pty_chr_read_poll, + pty_chr_read, + chr, NULL); + } + } +} + +static void char_pty_finalize(Object *obj) +{ + Chardev *chr = CHARDEV(obj); + PtyChardev *s = PTY_CHARDEV(obj); + + 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); + qemu_chr_be_event(chr, CHR_EVENT_CLOSED); +} + +static void char_pty_open(Chardev *chr, + ChardevBackend *backend, + bool *be_opened, + Error **errp) +{ + PtyChardev *s; + int master_fd, slave_fd; + char pty_name[PATH_MAX]; + char *name; + + master_fd = qemu_openpty_raw(&slave_fd, pty_name); + if (master_fd < 0) { + error_setg_errno(errp, errno, "Failed to create PTY"); + return; + } + + close(slave_fd); + qemu_set_nonblock(master_fd); + + chr->filename = g_strdup_printf("pty:%s", pty_name); + error_report("char device redirected to %s (label %s)", + pty_name, chr->label); + + s = PTY_CHARDEV(chr); + s->ioc = QIO_CHANNEL(qio_channel_file_new_fd(master_fd)); + name = g_strdup_printf("chardev-pty-%s", chr->label); + qio_channel_set_name(QIO_CHANNEL(s->ioc), name); + g_free(name); + s->timer_tag = 0; + *be_opened = false; +} + +static void char_pty_class_init(ObjectClass *oc, void *data) +{ + ChardevClass *cc = CHARDEV_CLASS(oc); + + cc->open = char_pty_open; + cc->chr_write = char_pty_chr_write; + cc->chr_update_read_handler = pty_chr_update_read_handler; + cc->chr_add_watch = pty_chr_add_watch; +} + +static const TypeInfo char_pty_type_info = { + .name = TYPE_CHARDEV_PTY, + .parent = TYPE_CHARDEV, + .instance_size = sizeof(PtyChardev), + .instance_finalize = char_pty_finalize, + .class_init = char_pty_class_init, +}; + +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(Chardev *chr, int cmd, void *arg) +{ + FDChardev *s = FD_CHARDEV(chr); + 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; +} +#endif /* __linux__ || __sun__ */ + +#if defined(__linux__) + +#define HAVE_CHARDEV_PARPORT 1 + +typedef struct { + Chardev parent; + int fd; + int mode; +} ParallelChardev; + +#define PARALLEL_CHARDEV(obj) \ + OBJECT_CHECK(ParallelChardev, (obj), TYPE_CHARDEV_PARALLEL) + +static int pp_hw_mode(ParallelChardev *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(Chardev *chr, int cmd, void *arg) +{ + ParallelChardev *drv = PARALLEL_CHARDEV(chr); + 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 qemu_chr_open_pp_fd(Chardev *chr, + int fd, + bool *be_opened, + Error **errp) +{ + ParallelChardev *drv = PARALLEL_CHARDEV(chr); + + if (ioctl(fd, PPCLAIM) < 0) { + error_setg_errno(errp, errno, "not a parallel port"); + close(fd); + return; + } + + drv->fd = fd; + drv->mode = IEEE1284_MODE_COMPAT; +} +#endif /* __linux__ */ + +#if defined(__FreeBSD__) || defined(__FreeBSD_kernel__) || defined(__DragonFly__) + +#define HAVE_CHARDEV_PARPORT 1 + +typedef struct { + Chardev parent; + int fd; +} ParallelChardev; + +#define PARALLEL_CHARDEV(obj) \ + OBJECT_CHECK(ParallelChardev, (obj), TYPE_CHARDEV_PARALLEL) + +static int pp_ioctl(Chardev *chr, int cmd, void *arg) +{ + ParallelChardev *drv = PARALLEL_CHARDEV(chr); + uint8_t b; + + switch (cmd) { + case CHR_IOCTL_PP_READ_DATA: + if (ioctl(drv->fd, PPIGDATA, &b) < 0) { + return -ENOTSUP; + } + *(uint8_t *)arg = b; + break; + case CHR_IOCTL_PP_WRITE_DATA: + b = *(uint8_t *)arg; + if (ioctl(drv->fd, PPISDATA, &b) < 0) { + return -ENOTSUP; + } + break; + case CHR_IOCTL_PP_READ_CONTROL: + if (ioctl(drv->fd, PPIGCTRL, &b) < 0) { + return -ENOTSUP; + } + *(uint8_t *)arg = b; + break; + case CHR_IOCTL_PP_WRITE_CONTROL: + b = *(uint8_t *)arg; + if (ioctl(drv->fd, PPISCTRL, &b) < 0) { + return -ENOTSUP; + } + break; + case CHR_IOCTL_PP_READ_STATUS: + if (ioctl(drv->fd, PPIGSTATUS, &b) < 0) { + return -ENOTSUP; + } + *(uint8_t *)arg = b; + break; + default: + return -ENOTSUP; + } + return 0; +} + +static void qemu_chr_open_pp_fd(Chardev *chr, + int fd, + bool *be_opened, + Error **errp) +{ + ParallelChardev *drv = PARALLEL_CHARDEV(chr); + drv->fd = fd; + *be_opened = false; +} +#endif + +#else /* _WIN32 */ + +#define HAVE_CHARDEV_SERIAL 1 + +typedef struct { + Chardev parent; + int max_size; + HANDLE hcom, hrecv, hsend; + OVERLAPPED orecv; + BOOL fpipe; + DWORD len; + + /* Protected by the Chardev chr_write_lock. */ + OVERLAPPED osend; + /* FIXME: file/console do not finalize */ + bool skip_free; +} WinChardev; + +#define TYPE_CHARDEV_WIN "chardev-win" +#define WIN_CHARDEV(obj) OBJECT_CHECK(WinChardev, (obj), TYPE_CHARDEV_WIN) + +typedef struct { + Chardev parent; + HANDLE hStdIn; + HANDLE hInputReadyEvent; + HANDLE hInputDoneEvent; + HANDLE hInputThread; + uint8_t win_stdio_buf; +} WinStdioChardev; + +#define TYPE_CHARDEV_WIN_STDIO "chardev-win-stdio" +#define WIN_STDIO_CHARDEV(obj) \ + OBJECT_CHECK(WinStdioChardev, (obj), TYPE_CHARDEV_WIN_STDIO) + +#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 char_win_finalize(Object *obj) +{ + Chardev *chr = CHARDEV(obj); + WinChardev *s = WIN_CHARDEV(chr); + + if (s->skip_free) { + return; + } + + if (s->hsend) { + CloseHandle(s->hsend); + } + if (s->hrecv) { + CloseHandle(s->hrecv); + } + if (s->hcom) { + CloseHandle(s->hcom); + } + 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(Chardev *chr, const char *filename, Error **errp) +{ + WinChardev *s = WIN_CHARDEV(chr); + 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: + return -1; +} + +/* Called with chr_write_lock held. */ +static int win_chr_write(Chardev *chr, const uint8_t *buf, int len1) +{ + WinChardev *s = WIN_CHARDEV(chr); + 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(Chardev *chr) +{ + WinChardev *s = WIN_CHARDEV(chr); + + s->max_size = qemu_chr_be_can_write(chr); + return s->max_size; +} + +static void win_chr_readfile(Chardev *chr) +{ + WinChardev *s = WIN_CHARDEV(chr); + + 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(Chardev *chr) +{ + WinChardev *s = WIN_CHARDEV(chr); + + 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) +{ + Chardev *chr = CHARDEV(opaque); + WinChardev *s = WIN_CHARDEV(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 int win_chr_pipe_poll(void *opaque) +{ + Chardev *chr = CHARDEV(opaque); + WinChardev *s = WIN_CHARDEV(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(Chardev *chr, const char *filename, + Error **errp) +{ + WinChardev *s = WIN_CHARDEV(chr); + 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: + return -1; +} + + +static void qemu_chr_open_pipe(Chardev *chr, + ChardevBackend *backend, + bool *be_opened, + Error **errp) +{ + ChardevHostdev *opts = backend->u.pipe.data; + const char *filename = opts->device; + + if (win_chr_pipe_init(chr, filename, errp) < 0) { + return; + } +} + +static void qemu_chr_open_win_file(Chardev *chr, HANDLE fd_out) +{ + WinChardev *s = WIN_CHARDEV(chr); + + s->skip_free = true; + s->hcom = fd_out; +} + +static void char_win_class_init(ObjectClass *oc, void *data) +{ + ChardevClass *cc = CHARDEV_CLASS(oc); + + cc->chr_write = win_chr_write; +} + +static const TypeInfo char_win_type_info = { + .name = TYPE_CHARDEV_WIN, + .parent = TYPE_CHARDEV, + .instance_size = sizeof(WinChardev), + .instance_finalize = char_win_finalize, + .class_init = char_win_class_init, + .abstract = true, +}; + +static void qemu_chr_open_win_con(Chardev *chr, + ChardevBackend *backend, + bool *be_opened, + Error **errp) +{ + qemu_chr_open_win_file(chr, GetStdHandle(STD_OUTPUT_HANDLE)); +} + +static void char_console_class_init(ObjectClass *oc, void *data) +{ + ChardevClass *cc = CHARDEV_CLASS(oc); + + cc->open = qemu_chr_open_win_con; +} + +static const TypeInfo char_console_type_info = { + .name = TYPE_CHARDEV_CONSOLE, + .parent = TYPE_CHARDEV_WIN, + .class_init = char_console_class_init, +}; + +static int win_stdio_write(Chardev *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) +{ + Chardev *chr = CHARDEV(opaque); + WinStdioChardev *stdio = WIN_STDIO_CHARDEV(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) +{ + WinStdioChardev *stdio = WIN_STDIO_CHARDEV(param); + 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) +{ + Chardev *chr = CHARDEV(opaque); + WinStdioChardev *stdio = WIN_STDIO_CHARDEV(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(Chardev *chr, bool echo) +{ + WinStdioChardev *stdio = WIN_STDIO_CHARDEV(chr); + 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 char_win_stdio_finalize(Object *obj) +{ + WinStdioChardev *stdio = WIN_STDIO_CHARDEV(obj); + + 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); + } +} + +static const TypeInfo char_win_stdio_type_info = { + .name = TYPE_CHARDEV_WIN_STDIO, + .parent = TYPE_CHARDEV, + .instance_size = sizeof(WinStdioChardev), + .instance_finalize = char_win_stdio_finalize, + .abstract = true, +}; + +static void qemu_chr_open_stdio(Chardev *chr, + ChardevBackend *backend, + bool *be_opened, + Error **errp) +{ + WinStdioChardev *stdio = WIN_STDIO_CHARDEV(chr); + DWORD dwMode; + int is_console = 0; + + stdio->hStdIn = GetStdHandle(STD_INPUT_HANDLE); + if (stdio->hStdIn == INVALID_HANDLE_VALUE) { + error_setg(errp, "cannot open stdio: invalid handle"); + return; + } + + is_console = GetConsoleMode(stdio->hStdIn, &dwMode) != 0; + + 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); + + qemu_chr_set_echo_win_stdio(chr, false); + + return; + +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); +} +#endif /* !_WIN32 */ + +/***********************************************************/ +/* UDP Net console */ + +typedef struct { + Chardev parent; + QIOChannel *ioc; + uint8_t buf[READ_BUF_LEN]; + int bufcnt; + int bufptr; + int max_size; +} UdpChardev; + +#define UDP_CHARDEV(obj) OBJECT_CHECK(UdpChardev, (obj), TYPE_CHARDEV_UDP) + +/* Called with chr_write_lock held. */ +static int udp_chr_write(Chardev *chr, const uint8_t *buf, int len) +{ + UdpChardev *s = UDP_CHARDEV(chr); + + return qio_channel_write( + s->ioc, (const char *)buf, len, NULL); +} + +static int udp_chr_read_poll(void *opaque) +{ + Chardev *chr = CHARDEV(opaque); + UdpChardev *s = UDP_CHARDEV(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) +{ + Chardev *chr = CHARDEV(opaque); + UdpChardev *s = UDP_CHARDEV(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(Chardev *chr, + GMainContext *context) +{ + UdpChardev *s = UDP_CHARDEV(chr); + + remove_fd_in_watch(chr); + if (s->ioc) { + chr->fd_in_tag = io_add_watch_poll(chr, s->ioc, + udp_chr_read_poll, + udp_chr_read, chr, + context); + } +} + +static void char_udp_finalize(Object *obj) +{ + Chardev *chr = CHARDEV(obj); + UdpChardev *s = UDP_CHARDEV(obj); + + remove_fd_in_watch(chr); + if (s->ioc) { + object_unref(OBJECT(s->ioc)); + } + qemu_chr_be_event(chr, CHR_EVENT_CLOSED); +} + +/***********************************************************/ +/* TCP Net console */ + +typedef struct { + Chardev parent; + 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; +} SocketChardev; + +#define SOCKET_CHARDEV(obj) \ + OBJECT_CHECK(SocketChardev, (obj), TYPE_CHARDEV_SOCKET) + +static gboolean socket_reconnect_timeout(gpointer opaque); + +static void qemu_chr_socket_restart_timer(Chardev *chr) +{ + SocketChardev *s = SOCKET_CHARDEV(chr); + char *name; + + assert(s->connected == 0); + s->reconnect_timer = g_timeout_add_seconds(s->reconnect_time, + socket_reconnect_timeout, chr); + name = g_strdup_printf("chardev-socket-reconnect-%s", chr->label); + g_source_set_name_by_id(s->reconnect_timer, name); + g_free(name); +} + +static void check_report_connect_error(Chardev *chr, + Error *err) +{ + SocketChardev *s = SOCKET_CHARDEV(chr); + + 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(Chardev *chr, const uint8_t *buf, int len) +{ + SocketChardev *s = SOCKET_CHARDEV(chr); + + 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) +{ + Chardev *chr = CHARDEV(opaque); + SocketChardev *s = SOCKET_CHARDEV(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(Chardev *chr, + SocketChardev *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(Chardev *chr, int *fds, int num) +{ + SocketChardev *s = SOCKET_CHARDEV(chr); + + 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(Chardev *chr, int *fds, int num) +{ + SocketChardev *s = SOCKET_CHARDEV(chr); + + /* clear old pending fd array */ + g_free(s->write_msgfds); + s->write_msgfds = NULL; + s->write_msgfds_num = 0; + + if (!s->connected || + !qio_channel_has_feature(s->ioc, + QIO_CHANNEL_FEATURE_FD_PASS)) { + return -1; + } + + if (num) { + s->write_msgfds = g_new(int, num); + memcpy(s->write_msgfds, fds, num * sizeof(int)); + } + + s->write_msgfds_num = num; + + return 0; +} + +static ssize_t tcp_chr_recv(Chardev *chr, char *buf, size_t len) +{ + SocketChardev *s = SOCKET_CHARDEV(chr); + 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(Chardev *chr, GIOCondition cond) +{ + SocketChardev *s = SOCKET_CHARDEV(chr); + return qio_channel_create_watch(s->ioc, cond); +} + +static void tcp_chr_free_connection(Chardev *chr) +{ + SocketChardev *s = SOCKET_CHARDEV(chr); + int i; + + if (!s->connected) { + return; + } + + if (s->read_msgfds_num) { + for (i = 0; i < s->read_msgfds_num; i++) { + close(s->read_msgfds[i]); + } + g_free(s->read_msgfds); + s->read_msgfds = NULL; + s->read_msgfds_num = 0; + } + + tcp_set_msgfds(chr, NULL, 0); + remove_fd_in_watch(chr); + object_unref(OBJECT(s->sioc)); + s->sioc = NULL; + object_unref(OBJECT(s->ioc)); + s->ioc = NULL; + g_free(chr->filename); + chr->filename = NULL; + s->connected = 0; +} + +static void tcp_chr_disconnect(Chardev *chr) +{ + SocketChardev *s = SOCKET_CHARDEV(chr); + + if (!s->connected) { + return; + } + + tcp_chr_free_connection(chr); + + if (s->listen_ioc) { + s->listen_tag = qio_channel_add_watch( + QIO_CHANNEL(s->listen_ioc), G_IO_IN, tcp_chr_accept, chr, NULL); + } + chr->filename = SocketAddress_to_str("disconnected:", s->addr, + s->is_listen, s->is_telnet); + qemu_chr_be_event(chr, CHR_EVENT_CLOSED); + if (s->reconnect_time) { + qemu_chr_socket_restart_timer(chr); + } +} + +static gboolean tcp_chr_read(QIOChannel *chan, GIOCondition cond, void *opaque) +{ + Chardev *chr = CHARDEV(opaque); + SocketChardev *s = SOCKET_CHARDEV(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(Chardev *chr, const uint8_t *buf, int len) +{ + SocketChardev *s = SOCKET_CHARDEV(chr); + 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) +{ + Chardev *chr = CHARDEV(opaque); + SocketChardev *s = SOCKET_CHARDEV(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(chr, s->ioc, + tcp_chr_read_poll, + tcp_chr_read, + chr, NULL); + } + qemu_chr_be_generic_open(chr); +} + +static void tcp_chr_update_read_handler(Chardev *chr, + GMainContext *context) +{ + SocketChardev *s = SOCKET_CHARDEV(chr); + + if (!s->connected) { + return; + } + + remove_fd_in_watch(chr); + if (s->ioc) { + chr->fd_in_tag = io_add_watch_poll(chr, s->ioc, + tcp_chr_read_poll, + tcp_chr_read, chr, + context); + } +} + +typedef struct { + Chardev *chr; + char buf[12]; + size_t buflen; +} TCPChardevTelnetInit; + +static gboolean tcp_chr_telnet_init_io(QIOChannel *ioc, + GIOCondition cond G_GNUC_UNUSED, + gpointer user_data) +{ + TCPChardevTelnetInit *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(Chardev *chr) +{ + SocketChardev *s = SOCKET_CHARDEV(chr); + TCPChardevTelnetInit *init = g_new0(TCPChardevTelnetInit, 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(QIOTask *task, + gpointer user_data) +{ + Chardev *chr = user_data; + SocketChardev *s = user_data; + + if (qio_task_propagate_error(task, NULL)) { + 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(Chardev *chr) +{ + SocketChardev *s = SOCKET_CHARDEV(chr); + QIOChannelTLS *tioc; + Error *err = NULL; + gchar *name; + + 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); + return; + } + name = g_strdup_printf("chardev-tls-%s-%s", + s->is_listen ? "server" : "client", + chr->label); + qio_channel_set_name(QIO_CHANNEL(tioc), name); + g_free(name); + object_unref(OBJECT(s->ioc)); + s->ioc = QIO_CHANNEL(tioc); + + qio_channel_tls_handshake(tioc, + tcp_chr_tls_handshake, + chr, + NULL); +} + + +static void tcp_chr_set_client_ioc_name(Chardev *chr, + QIOChannelSocket *sioc) +{ + SocketChardev *s = SOCKET_CHARDEV(chr); + char *name; + name = g_strdup_printf("chardev-tcp-%s-%s", + s->is_listen ? "server" : "client", + chr->label); + qio_channel_set_name(QIO_CHANNEL(sioc), name); + g_free(name); + +} + +static int tcp_chr_new_client(Chardev *chr, QIOChannelSocket *sioc) +{ + SocketChardev *s = SOCKET_CHARDEV(chr); + + 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(Chardev *chr, int fd) +{ + int ret; + QIOChannelSocket *sioc; + + sioc = qio_channel_socket_new_fd(fd, NULL); + if (!sioc) { + return -1; + } + tcp_chr_set_client_ioc_name(chr, sioc); + ret = tcp_chr_new_client(chr, sioc); + object_unref(OBJECT(sioc)); + return ret; +} + +static gboolean tcp_chr_accept(QIOChannel *channel, + GIOCondition cond, + void *opaque) +{ + Chardev *chr = CHARDEV(opaque); + QIOChannelSocket *sioc; + + sioc = qio_channel_socket_accept(QIO_CHANNEL_SOCKET(channel), + NULL); + if (!sioc) { + return TRUE; + } + + tcp_chr_new_client(chr, sioc); + + object_unref(OBJECT(sioc)); + + return TRUE; +} + +static int tcp_chr_wait_connected(Chardev *chr, Error **errp) +{ + SocketChardev *s = SOCKET_CHARDEV(chr); + QIOChannelSocket *sioc; + + /* It can't wait on s->connected, since it is set asynchronously + * in TLS and telnet cases, only wait for an accepted socket */ + while (!s->ioc) { + if (s->is_listen) { + error_report("QEMU waiting for connection on: %s", + chr->filename); + qio_channel_set_blocking(QIO_CHANNEL(s->listen_ioc), true, NULL); + tcp_chr_accept(QIO_CHANNEL(s->listen_ioc), G_IO_IN, chr); + qio_channel_set_blocking(QIO_CHANNEL(s->listen_ioc), false, NULL); + } else { + sioc = qio_channel_socket_new(); + tcp_chr_set_client_ioc_name(chr, sioc); + if (qio_channel_socket_connect_sync(sioc, s->addr, errp) < 0) { + object_unref(OBJECT(sioc)); + return -1; + } + tcp_chr_new_client(chr, sioc); + object_unref(OBJECT(sioc)); + } + } + + return 0; +} + +static int qemu_chr_wait_connected(Chardev *chr, Error **errp) +{ + ChardevClass *cc = CHARDEV_GET_CLASS(chr); + + if (cc->chr_wait_connected) { + return cc->chr_wait_connected(chr, errp); + } + + return 0; +} + +int qemu_chr_fe_wait_connected(CharBackend *be, Error **errp) +{ + if (!be->chr) { + error_setg(errp, "missing associated backend"); + return -1; + } + + return qemu_chr_wait_connected(be->chr, errp); +} + +static void char_socket_finalize(Object *obj) +{ + Chardev *chr = CHARDEV(obj); + SocketChardev *s = SOCKET_CHARDEV(obj); + + tcp_chr_free_connection(chr); + + if (s->reconnect_timer) { + g_source_remove(s->reconnect_timer); + s->reconnect_timer = 0; + } + qapi_free_SocketAddress(s->addr); + if (s->listen_tag) { + g_source_remove(s->listen_tag); + s->listen_tag = 0; + } + if (s->listen_ioc) { + object_unref(OBJECT(s->listen_ioc)); + } + if (s->tls_creds) { + object_unref(OBJECT(s->tls_creds)); + } + + qemu_chr_be_event(chr, CHR_EVENT_CLOSED); +} + + +static void qemu_chr_socket_connected(QIOTask *task, void *opaque) +{ + QIOChannelSocket *sioc = QIO_CHANNEL_SOCKET(qio_task_get_source(task)); + Chardev *chr = CHARDEV(opaque); + SocketChardev *s = SOCKET_CHARDEV(chr); + Error *err = NULL; + + if (qio_task_propagate_error(task, &err)) { + check_report_connect_error(chr, err); + error_free(err); + goto cleanup; + } + + s->connect_err_reported = false; + tcp_chr_new_client(chr, sioc); + + cleanup: + object_unref(OBJECT(sioc)); +} + + +/*********************************************************/ +/* Ring buffer chardev */ + +typedef struct { + Chardev parent; + size_t size; + size_t prod; + size_t cons; + uint8_t *cbuf; +} RingBufChardev; + +#define RINGBUF_CHARDEV(obj) \ + OBJECT_CHECK(RingBufChardev, (obj), TYPE_CHARDEV_RINGBUF) + +static size_t ringbuf_count(const Chardev *chr) +{ + const RingBufChardev *d = RINGBUF_CHARDEV(chr); + + return d->prod - d->cons; +} + +/* Called with chr_write_lock held. */ +static int ringbuf_chr_write(Chardev *chr, const uint8_t *buf, int len) +{ + RingBufChardev *d = RINGBUF_CHARDEV(chr); + 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 len; +} + +static int ringbuf_chr_read(Chardev *chr, uint8_t *buf, int len) +{ + RingBufChardev *d = RINGBUF_CHARDEV(chr); + 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 char_ringbuf_finalize(Object *obj) +{ + RingBufChardev *d = RINGBUF_CHARDEV(obj); + + g_free(d->cbuf); +} + +static void qemu_chr_open_ringbuf(Chardev *chr, + ChardevBackend *backend, + bool *be_opened, + Error **errp) +{ + ChardevRingbuf *opts = backend->u.ringbuf.data; + RingBufChardev *d = RINGBUF_CHARDEV(chr); + + 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"); + return; + } + + d->prod = 0; + d->cons = 0; + d->cbuf = g_malloc0(d->size); +} + +void qmp_ringbuf_write(const char *device, const char *data, + bool has_format, enum DataFormat format, + Error **errp) +{ + Chardev *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 (!CHARDEV_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) +{ + Chardev *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 (!CHARDEV_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; + + backend->type = CHARDEV_BACKEND_KIND_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; + + backend->type = CHARDEV_BACKEND_KIND_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); +} + +static void char_stdio_class_init(ObjectClass *oc, void *data) +{ + ChardevClass *cc = CHARDEV_CLASS(oc); + + cc->parse = qemu_chr_parse_stdio; + cc->open = qemu_chr_open_stdio; +#ifdef _WIN32 + cc->chr_write = win_stdio_write; + cc->chr_set_echo = qemu_chr_set_echo_win_stdio; +#else + cc->chr_set_echo = qemu_chr_set_echo_stdio; +#endif +} + +static const TypeInfo char_stdio_type_info = { + .name = TYPE_CHARDEV_STDIO, +#ifdef _WIN32 + .parent = TYPE_CHARDEV_WIN_STDIO, +#else + .parent = TYPE_CHARDEV_FD, + .instance_finalize = char_stdio_finalize, +#endif + .class_init = char_stdio_class_init, +}; + +#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; + + backend->type = CHARDEV_BACKEND_KIND_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; + + backend->type = CHARDEV_BACKEND_KIND_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; + + backend->type = CHARDEV_BACKEND_KIND_PIPE; + 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 char_pipe_class_init(ObjectClass *oc, void *data) +{ + ChardevClass *cc = CHARDEV_CLASS(oc); + + cc->parse = qemu_chr_parse_pipe; + cc->open = qemu_chr_open_pipe; +} + +static const TypeInfo char_pipe_type_info = { + .name = TYPE_CHARDEV_PIPE, +#ifdef _WIN32 + .parent = TYPE_CHARDEV_WIN, +#else + .parent = TYPE_CHARDEV_FD, +#endif + .class_init = char_pipe_class_init, +}; + +static void qemu_chr_parse_ringbuf(QemuOpts *opts, ChardevBackend *backend, + Error **errp) +{ + int val; + ChardevRingbuf *ringbuf; + + backend->type = CHARDEV_BACKEND_KIND_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 char_ringbuf_class_init(ObjectClass *oc, void *data) +{ + ChardevClass *cc = CHARDEV_CLASS(oc); + + cc->parse = qemu_chr_parse_ringbuf; + cc->open = qemu_chr_open_ringbuf; + cc->chr_write = ringbuf_chr_write; +} + +static const TypeInfo char_ringbuf_type_info = { + .name = TYPE_CHARDEV_RINGBUF, + .parent = TYPE_CHARDEV, + .class_init = char_ringbuf_class_init, + .instance_size = sizeof(RingBufChardev), + .instance_finalize = char_ringbuf_finalize, +}; + +/* Bug-compatibility: */ +static const TypeInfo char_memory_type_info = { + .name = TYPE_CHARDEV_MEMORY, + .parent = TYPE_CHARDEV_RINGBUF, +}; + +static void qemu_chr_parse_mux(QemuOpts *opts, ChardevBackend *backend, + Error **errp) +{ + const char *chardev = qemu_opt_get(opts, "chardev"); + ChardevMux *mux; + + backend->type = CHARDEV_BACKEND_KIND_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 char_mux_class_init(ObjectClass *oc, void *data) +{ + ChardevClass *cc = CHARDEV_CLASS(oc); + + cc->parse = qemu_chr_parse_mux; + cc->open = qemu_chr_open_mux; + cc->chr_write = mux_chr_write; + cc->chr_accept_input = mux_chr_accept_input; + cc->chr_add_watch = mux_chr_add_watch; +} + +static const TypeInfo char_mux_type_info = { + .name = TYPE_CHARDEV_MUX, + .parent = TYPE_CHARDEV, + .class_init = char_mux_class_init, + .instance_size = sizeof(MuxChardev), + .instance_finalize = char_mux_finalize, +}; + +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; + + backend->type = CHARDEV_BACKEND_KIND_SOCKET; + 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; + + backend->type = CHARDEV_BACKEND_KIND_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; + } +} + +static const ChardevClass *char_get_class(const char *driver, Error **errp) +{ + ObjectClass *oc; + const ChardevClass *cc; + char *typename = g_strdup_printf("chardev-%s", driver); + + oc = object_class_by_name(typename); + g_free(typename); + + if (!object_class_dynamic_cast(oc, TYPE_CHARDEV)) { + error_setg(errp, "'%s' is not a valid char driver name", driver); + return NULL; + } + + if (object_class_is_abstract(oc)) { + error_setg(errp, QERR_INVALID_PARAMETER_VALUE, "driver", + "abstract device type"); + return NULL; + } + + cc = CHARDEV_CLASS(oc); + if (cc->internal) { + error_setg(errp, "'%s' is not a valid char driver name", driver); + return NULL; + } + + return cc; +} + +static Chardev *qemu_chardev_add(const char *id, const char *typename, + ChardevBackend *backend, Error **errp) +{ + Chardev *chr; + + chr = qemu_chr_find(id); + if (chr) { + error_setg(errp, "Chardev '%s' already exists", id); + return NULL; + } + + chr = qemu_chardev_new(id, typename, backend, errp); + if (!chr) { + return NULL; + } + + QTAILQ_INSERT_TAIL(&chardevs, chr, next); + return chr; +} + +static const struct ChardevAlias { + const char *typename; + const char *alias; +} chardev_alias_table[] = { +#ifdef HAVE_CHARDEV_PARPORT + { "parallel", "parport" }, +#endif +#ifdef HAVE_CHARDEV_SERIAL + { "serial", "tty" }, +#endif +}; + +typedef struct ChadevClassFE { + void (*fn)(const char *name, void *opaque); + void *opaque; +} ChadevClassFE; + +static void +chardev_class_foreach(ObjectClass *klass, void *opaque) +{ + ChadevClassFE *fe = opaque; + + assert(g_str_has_prefix(object_class_get_name(klass), "chardev-")); + if (CHARDEV_CLASS(klass)->internal) { + return; + } + + fe->fn(object_class_get_name(klass) + 8, fe->opaque); +} + +static void +chardev_name_foreach(void (*fn)(const char *name, void *opaque), void *opaque) +{ + ChadevClassFE fe = { .fn = fn, .opaque = opaque }; + int i; + + object_class_foreach(chardev_class_foreach, TYPE_CHARDEV, false, &fe); + + for (i = 0; i < ARRAY_SIZE(chardev_alias_table); i++) { + fn(chardev_alias_table[i].alias, opaque); + } +} + +static void +help_string_append(const char *name, void *opaque) +{ + GString *str = opaque; + + g_string_append_printf(str, "\n%s", name); +} + +Chardev *qemu_chr_new_from_opts(QemuOpts *opts, + Error **errp) +{ + Error *local_err = NULL; + const ChardevClass *cc; + Chardev *chr; + int i; + ChardevBackend *backend = NULL; + const char *name = qemu_opt_get(opts, "backend"); + const char *id = qemu_opts_id(opts); + char *bid = NULL; + + if (name == NULL) { + error_setg(errp, "chardev: \"%s\" missing backend", + qemu_opts_id(opts)); + return NULL; + } + + if (is_help_option(name)) { + GString *str = g_string_new(""); + + chardev_name_foreach(help_string_append, str); + + error_report("Available chardev backend types: %s", str->str); + g_string_free(str, true); + exit(0); + } + + if (id == NULL) { + error_setg(errp, "chardev: no id specified"); + return NULL; + } + + for (i = 0; i < ARRAY_SIZE(chardev_alias_table); i++) { + if (g_strcmp0(chardev_alias_table[i].alias, name) == 0) { + name = chardev_alias_table[i].typename; + break; + } + } + + cc = char_get_class(name, errp); + if (cc == NULL) { + return NULL; + } + + backend = g_new0(ChardevBackend, 1); + backend->type = CHARDEV_BACKEND_KIND_NULL; + + if (qemu_opt_get_bool(opts, "mux", 0)) { + bid = g_strdup_printf("%s-base", id); + } + + chr = NULL; + if (cc->parse) { + cc->parse(opts, backend, &local_err); + if (local_err) { + error_propagate(errp, local_err); + goto out; + } + } else { + ChardevCommon *ccom = g_new0(ChardevCommon, 1); + qemu_chr_parse_common(opts, ccom); + backend->u.null.data = ccom; /* Any ChardevCommon member would work */ + } + + chr = qemu_chardev_add(bid ? bid : id, + object_class_get_name(OBJECT_CLASS(cc)), + backend, errp); + if (chr == NULL) { + goto out; + } + + if (bid) { + Chardev *mux; + qapi_free_ChardevBackend(backend); + backend = g_new0(ChardevBackend, 1); + backend->type = CHARDEV_BACKEND_KIND_MUX; + backend->u.mux.data = g_new0(ChardevMux, 1); + backend->u.mux.data->chardev = g_strdup(bid); + mux = qemu_chardev_add(id, TYPE_CHARDEV_MUX, backend, errp); + if (mux == NULL) { + qemu_chr_delete(chr); + chr = NULL; + goto out; + } + chr = mux; + } + +out: + qapi_free_ChardevBackend(backend); + g_free(bid); + return chr; +} + +Chardev *qemu_chr_new_noreplay(const char *label, const char *filename) +{ + const char *p; + Chardev *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, &err); + if (err) { + error_report_err(err); + } + if (chr && qemu_opt_get_bool(opts, "mux", 0)) { + monitor_init(chr, MONITOR_USE_READLINE); + } + qemu_opts_del(opts); + return chr; +} + +Chardev *qemu_chr_new(const char *label, const char *filename) +{ + Chardev *chr; + chr = qemu_chr_new_noreplay(label, filename); + if (chr) { + if (replay_mode != REPLAY_MODE_NONE) { + qemu_chr_set_feature(chr, QEMU_CHAR_FEATURE_REPLAY); + } + if (qemu_chr_replay(chr) && CHARDEV_GET_CLASS(chr)->chr_ioctl) { + error_report("Replay: ioctl is not supported " + "for serial devices yet"); + } + replay_register_char_driver(chr); + } + return chr; +} + +void qemu_chr_fe_set_echo(CharBackend *be, bool echo) +{ + Chardev *chr = be->chr; + + if (chr && CHARDEV_GET_CLASS(chr)->chr_set_echo) { + CHARDEV_GET_CLASS(chr)->chr_set_echo(chr, echo); + } +} + +void qemu_chr_fe_set_open(CharBackend *be, int fe_open) +{ + Chardev *chr = be->chr; + + if (!chr) { + return; + } + + if (be->fe_open == fe_open) { + return; + } + be->fe_open = fe_open; + if (CHARDEV_GET_CLASS(chr)->chr_set_fe_open) { + CHARDEV_GET_CLASS(chr)->chr_set_fe_open(chr, fe_open); + } +} + +guint qemu_chr_fe_add_watch(CharBackend *be, GIOCondition cond, + GIOFunc func, void *user_data) +{ + Chardev *s = be->chr; + GSource *src; + guint tag; + + if (!s || CHARDEV_GET_CLASS(s)->chr_add_watch == NULL) { + return 0; + } + + src = CHARDEV_GET_CLASS(s)->chr_add_watch(s, cond); + if (!src) { + return 0; + } + + g_source_set_callback(src, (GSourceFunc)func, user_data, NULL); + tag = g_source_attach(src, NULL); + g_source_unref(src); + + return tag; +} + +void qemu_chr_fe_disconnect(CharBackend *be) +{ + Chardev *chr = be->chr; + + if (chr && CHARDEV_GET_CLASS(chr)->chr_disconnect) { + CHARDEV_GET_CLASS(chr)->chr_disconnect(chr); + } +} + +void qemu_chr_delete(Chardev *chr) +{ + QTAILQ_REMOVE(&chardevs, chr, next); + object_unref(OBJECT(chr)); +} + +ChardevInfoList *qmp_query_chardev(Error **errp) +{ + ChardevInfoList *chr_list = NULL; + Chardev *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->be && chr->be->fe_open; + + info->next = chr_list; + chr_list = info; + } + + return chr_list; +} + +static void +qmp_prepend_backend(const char *name, void *opaque) +{ + ChardevBackendInfoList **list = opaque; + ChardevBackendInfoList *info = g_malloc0(sizeof(*info)); + + info->value = g_malloc0(sizeof(*info->value)); + info->value->name = g_strdup(name); + info->next = *list; + *list = info; +} + +ChardevBackendInfoList *qmp_query_chardev_backends(Error **errp) +{ + ChardevBackendInfoList *backend_list = NULL; + + chardev_name_foreach(qmp_prepend_backend, &backend_list); + + return backend_list; +} + +Chardev *qemu_chr_find(const char *name) +{ + Chardev *chr; + + QTAILQ_FOREACH(chr, &chardevs, next) { + if (strcmp(chr->label, name) != 0) + continue; + return chr; + } + return NULL; +} + +QemuOptsList qemu_chardev_opts = { + .name = "chardev", + .implied_opt_name = "backend", + .head = QTAILQ_HEAD_INITIALIZER(qemu_chardev_opts.head), + .desc = { + { + .name = "backend", + .type = QEMU_OPT_STRING, + },{ + .name = "path", + .type = QEMU_OPT_STRING, + },{ + .name = "host", + .type = QEMU_OPT_STRING, + },{ + .name = "port", + .type = QEMU_OPT_STRING, + },{ + .name = "localaddr", + .type = QEMU_OPT_STRING, + },{ + .name = "localport", + .type = QEMU_OPT_STRING, + },{ + .name = "to", + .type = QEMU_OPT_NUMBER, + },{ + .name = "ipv4", + .type = QEMU_OPT_BOOL, + },{ + .name = "ipv6", + .type = QEMU_OPT_BOOL, + },{ + .name = "wait", + .type = QEMU_OPT_BOOL, + },{ + .name = "server", + .type = QEMU_OPT_BOOL, + },{ + .name = "delay", + .type = QEMU_OPT_BOOL, + },{ + .name = "reconnect", + .type = QEMU_OPT_NUMBER, + },{ + .name = "telnet", + .type = QEMU_OPT_BOOL, + },{ + .name = "tls-creds", + .type = QEMU_OPT_STRING, + },{ + .name = "width", + .type = QEMU_OPT_NUMBER, + },{ + .name = "height", + .type = QEMU_OPT_NUMBER, + },{ + .name = "cols", + .type = QEMU_OPT_NUMBER, + },{ + .name = "rows", + .type = QEMU_OPT_NUMBER, + },{ + .name = "mux", + .type = QEMU_OPT_BOOL, + },{ + .name = "signal", + .type = QEMU_OPT_BOOL, + },{ + .name = "name", + .type = QEMU_OPT_STRING, + },{ + .name = "debug", + .type = QEMU_OPT_NUMBER, + },{ + .name = "size", + .type = QEMU_OPT_SIZE, + },{ + .name = "chardev", + .type = QEMU_OPT_STRING, + },{ + .name = "append", + .type = QEMU_OPT_BOOL, + },{ + .name = "logfile", + .type = QEMU_OPT_STRING, + },{ + .name = "logappend", + .type = QEMU_OPT_BOOL, + }, + { /* end of list */ } + }, +}; + +#ifdef _WIN32 + +static void qmp_chardev_open_file(Chardev *chr, + ChardevBackend *backend, + bool *be_opened, + Error **errp) +{ + ChardevFile *file = backend->u.file.data; + HANDLE out; + DWORD accessmode; + DWORD flags; + + if (file->has_in) { + error_setg(errp, "input file not supported"); + return; + } + + if (file->has_append && file->append) { + /* Append to file if it already exists. */ + accessmode = FILE_GENERIC_WRITE & ~FILE_WRITE_DATA; + flags = OPEN_ALWAYS; + } else { + /* Truncate file if it already exists. */ + accessmode = GENERIC_WRITE; + flags = CREATE_ALWAYS; + } + + out = CreateFile(file->out, accessmode, FILE_SHARE_READ, NULL, flags, + FILE_ATTRIBUTE_NORMAL, NULL); + if (out == INVALID_HANDLE_VALUE) { + error_setg(errp, "open %s failed", file->out); + return; + } + + qemu_chr_open_win_file(chr, out); +} + +static void qmp_chardev_open_serial(Chardev *chr, + ChardevBackend *backend, + bool *be_opened, + Error **errp) +{ + ChardevHostdev *serial = backend->u.serial.data; + + win_chr_init(chr, serial->device, 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 void qmp_chardev_open_file(Chardev *chr, + ChardevBackend *backend, + bool *be_opened, + Error **errp) +{ + ChardevFile *file = backend->u.file.data; + 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; + } + + if (file->has_in) { + flags = O_RDONLY; + in = qmp_chardev_open_file_source(file->in, flags, errp); + if (in < 0) { + qemu_close(out); + return; + } + } + + qemu_chr_open_fd(chr, in, out); +} + +#ifdef HAVE_CHARDEV_SERIAL +static void qmp_chardev_open_serial(Chardev *chr, + ChardevBackend *backend, + bool *be_opened, + Error **errp) +{ + ChardevHostdev *serial = backend->u.serial.data; + int fd; + + fd = qmp_chardev_open_file_source(serial->device, O_RDWR, errp); + if (fd < 0) { + return; + } + qemu_set_nonblock(fd); + tty_serial_init(fd, 115200, 'N', 8, 1); + + qemu_chr_open_fd(chr, fd, fd); +} +#endif + +#ifdef HAVE_CHARDEV_PARPORT +static void qmp_chardev_open_parallel(Chardev *chr, + ChardevBackend *backend, + bool *be_opened, + Error **errp) +{ + ChardevHostdev *parallel = backend->u.parallel.data; + int fd; + + fd = qmp_chardev_open_file_source(parallel->device, O_RDWR, errp); + if (fd < 0) { + return; + } + qemu_chr_open_pp_fd(chr, fd, be_opened, errp); +} + +static void char_parallel_class_init(ObjectClass *oc, void *data) +{ + ChardevClass *cc = CHARDEV_CLASS(oc); + + cc->parse = qemu_chr_parse_parallel; + cc->open = qmp_chardev_open_parallel; +#if defined(__linux__) + cc->chr_write = null_chr_write; + cc->chr_ioctl = pp_ioctl; +#elif defined(__FreeBSD__) || defined(__FreeBSD_kernel__) || defined(__DragonFly__) + cc->chr_write = null_chr_write; + cc->chr_ioctl = pp_ioctl; +#endif +} + +static void char_parallel_finalize(Object *obj) +{ +#if defined(__linux__) + Chardev *chr = CHARDEV(obj); + ParallelChardev *drv = PARALLEL_CHARDEV(chr); + int fd = drv->fd; + + pp_hw_mode(drv, IEEE1284_MODE_COMPAT); + ioctl(fd, PPRELEASE); + close(fd); + qemu_chr_be_event(chr, CHR_EVENT_CLOSED); +#elif defined(__FreeBSD__) || defined(__FreeBSD_kernel__) || defined(__DragonFly__) + /* FIXME: close fd? */ +#endif +} + +static const TypeInfo char_parallel_type_info = { + .name = TYPE_CHARDEV_PARALLEL, + .parent = TYPE_CHARDEV, + .instance_size = sizeof(ParallelChardev), + .instance_finalize = char_parallel_finalize, + .class_init = char_parallel_class_init, +}; +#endif + +#endif /* WIN32 */ + +static void char_file_class_init(ObjectClass *oc, void *data) +{ + ChardevClass *cc = CHARDEV_CLASS(oc); + + cc->parse = qemu_chr_parse_file_out; + cc->open = qmp_chardev_open_file; +} + +static const TypeInfo char_file_type_info = { + .name = TYPE_CHARDEV_FILE, +#ifdef _WIN32 + .parent = TYPE_CHARDEV_WIN, +#else + .parent = TYPE_CHARDEV_FD, +#endif + .class_init = char_file_class_init, +}; + +#ifdef HAVE_CHARDEV_SERIAL + +static void char_serial_class_init(ObjectClass *oc, void *data) +{ + ChardevClass *cc = CHARDEV_CLASS(oc); + + cc->parse = qemu_chr_parse_serial; + cc->open = qmp_chardev_open_serial; +#ifndef _WIN32 + cc->chr_ioctl = tty_serial_ioctl; +#endif +} + +static const TypeInfo char_serial_type_info = { + .name = TYPE_CHARDEV_SERIAL, +#ifdef _WIN32 + .parent = TYPE_CHARDEV_WIN, +#else + .parent = TYPE_CHARDEV_FD, +#endif + .class_init = char_serial_class_init, +}; +#endif + +static gboolean socket_reconnect_timeout(gpointer opaque) +{ + Chardev *chr = CHARDEV(opaque); + SocketChardev *s = SOCKET_CHARDEV(opaque); + QIOChannelSocket *sioc; + + s->reconnect_timer = 0; + + if (chr->be_open) { + return false; + } + + sioc = qio_channel_socket_new(); + tcp_chr_set_client_ioc_name(chr, sioc); + qio_channel_socket_connect_async(sioc, s->addr, + qemu_chr_socket_connected, + chr, NULL); + + return false; +} + +static void qmp_chardev_open_socket(Chardev *chr, + ChardevBackend *backend, + bool *be_opened, + Error **errp) +{ + SocketChardev *s = SOCKET_CHARDEV(chr); + 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; + QIOChannelSocket *sioc = NULL; + + s->is_unix = addr->type == SOCKET_ADDRESS_KIND_UNIX; + s->is_listen = is_listen; + s->is_telnet = is_telnet; + s->do_nodelay = do_nodelay; + if (sock->tls_creds) { + Object *creds; + creds = object_resolve_path_component( + object_get_objects_root(), sock->tls_creds); + if (!creds) { + error_setg(errp, "No TLS credentials with id '%s'", + sock->tls_creds); + goto error; + } + s->tls_creds = (QCryptoTLSCreds *) + object_dynamic_cast(creds, + TYPE_QCRYPTO_TLS_CREDS); + if (!s->tls_creds) { + error_setg(errp, "Object with id '%s' is not TLS credentials", + sock->tls_creds); + goto error; + } + object_ref(OBJECT(s->tls_creds)); + if (is_listen) { + if (s->tls_creds->endpoint != QCRYPTO_TLS_CREDS_ENDPOINT_SERVER) { + error_setg(errp, "%s", + "Expected TLS credentials for server endpoint"); + goto error; + } + } else { + if (s->tls_creds->endpoint != QCRYPTO_TLS_CREDS_ENDPOINT_CLIENT) { + error_setg(errp, "%s", + "Expected TLS credentials for client endpoint"); + goto error; + } + } + } + + s->addr = QAPI_CLONE(SocketAddress, sock->addr); + + qemu_chr_set_feature(chr, QEMU_CHAR_FEATURE_RECONNECTABLE); + if (s->is_unix) { + qemu_chr_set_feature(chr, QEMU_CHAR_FEATURE_FD_PASS); + } + + /* be isn't opened until we get a connection */ + *be_opened = false; + + chr->filename = SocketAddress_to_str("disconnected:", + addr, is_listen, is_telnet); + + if (is_listen) { + if (is_telnet) { + s->do_telnetopt = 1; + } + } else if (reconnect > 0) { + s->reconnect_time = reconnect; + } + + if (s->reconnect_time) { + sioc = qio_channel_socket_new(); + tcp_chr_set_client_ioc_name(chr, sioc); + qio_channel_socket_connect_async(sioc, s->addr, + qemu_chr_socket_connected, + chr, NULL); + } else { + if (s->is_listen) { + char *name; + sioc = qio_channel_socket_new(); + + name = g_strdup_printf("chardev-tcp-listener-%s", chr->label); + qio_channel_set_name(QIO_CHANNEL(sioc), name); + g_free(name); + + if (qio_channel_socket_listen_sync(sioc, s->addr, errp) < 0) { + goto error; + } + s->listen_ioc = sioc; + if (is_waitconnect && + qemu_chr_wait_connected(chr, errp) < 0) { + return; + } + if (!s->ioc) { + s->listen_tag = qio_channel_add_watch( + QIO_CHANNEL(s->listen_ioc), G_IO_IN, + tcp_chr_accept, chr, NULL); + } + } else if (qemu_chr_wait_connected(chr, errp) < 0) { + goto error; + } + } + + return; + +error: + if (sioc) { + object_unref(OBJECT(sioc)); + } +} + +static void char_socket_class_init(ObjectClass *oc, void *data) +{ + ChardevClass *cc = CHARDEV_CLASS(oc); + + cc->parse = qemu_chr_parse_socket; + cc->open = qmp_chardev_open_socket; + cc->chr_wait_connected = tcp_chr_wait_connected; + cc->chr_write = tcp_chr_write; + cc->chr_sync_read = tcp_chr_sync_read; + cc->chr_disconnect = tcp_chr_disconnect; + cc->get_msgfds = tcp_get_msgfds; + cc->set_msgfds = tcp_set_msgfds; + cc->chr_add_client = tcp_chr_add_client; + cc->chr_add_watch = tcp_chr_add_watch; + cc->chr_update_read_handler = tcp_chr_update_read_handler; +} + +static const TypeInfo char_socket_type_info = { + .name = TYPE_CHARDEV_SOCKET, + .parent = TYPE_CHARDEV, + .instance_size = sizeof(SocketChardev), + .instance_finalize = char_socket_finalize, + .class_init = char_socket_class_init, +}; + +static void qmp_chardev_open_udp(Chardev *chr, + ChardevBackend *backend, + bool *be_opened, + Error **errp) +{ + ChardevUdp *udp = backend->u.udp.data; + QIOChannelSocket *sioc = qio_channel_socket_new(); + char *name; + UdpChardev *s = UDP_CHARDEV(chr); + + if (qio_channel_socket_dgram_sync(sioc, + udp->local, udp->remote, + errp) < 0) { + object_unref(OBJECT(sioc)); + return; + } + + name = g_strdup_printf("chardev-udp-%s", chr->label); + qio_channel_set_name(QIO_CHANNEL(sioc), name); + g_free(name); + + s->ioc = QIO_CHANNEL(sioc); + /* be isn't opened until we get a connection */ + *be_opened = false; +} + +static void char_udp_class_init(ObjectClass *oc, void *data) +{ + ChardevClass *cc = CHARDEV_CLASS(oc); + + cc->parse = qemu_chr_parse_udp; + cc->open = qmp_chardev_open_udp; + cc->chr_write = udp_chr_write; + cc->chr_update_read_handler = udp_chr_update_read_handler; +} + +static const TypeInfo char_udp_type_info = { + .name = TYPE_CHARDEV_UDP, + .parent = TYPE_CHARDEV, + .instance_size = sizeof(UdpChardev), + .instance_finalize = char_udp_finalize, + .class_init = char_udp_class_init, +}; + +bool qemu_chr_has_feature(Chardev *chr, + ChardevFeature feature) +{ + return test_bit(feature, chr->features); +} + +void qemu_chr_set_feature(Chardev *chr, + ChardevFeature feature) +{ + return set_bit(feature, chr->features); +} + +Chardev *qemu_chardev_new(const char *id, const char *typename, + ChardevBackend *backend, Error **errp) +{ + Chardev *chr = NULL; + Error *local_err = NULL; + bool be_opened = true; + + assert(g_str_has_prefix(typename, "chardev-")); + + chr = CHARDEV(object_new(typename)); + chr->label = g_strdup(id); + + qemu_char_open(chr, backend, &be_opened, &local_err); + if (local_err) { + error_propagate(errp, local_err); + object_unref(OBJECT(chr)); + return NULL; + } + + if (!chr->filename) { + chr->filename = g_strdup(typename + 8); + } + if (be_opened) { + qemu_chr_be_event(chr, CHR_EVENT_OPENED); + } + + return chr; +} + +ChardevReturn *qmp_chardev_add(const char *id, ChardevBackend *backend, + Error **errp) +{ + const ChardevClass *cc; + ChardevReturn *ret; + Chardev *chr; + + cc = char_get_class(ChardevBackendKind_lookup[backend->type], errp); + if (!cc) { + return NULL; + } + + chr = qemu_chardev_add(id, object_class_get_name(OBJECT_CLASS(cc)), + backend, errp); + if (!chr) { + return NULL; + } + + ret = g_new0(ChardevReturn, 1); + if (CHARDEV_IS_PTY(chr)) { + ret->pty = g_strdup(chr->filename + 4); + ret->has_pty = true; + } + + return ret; +} + +void qmp_chardev_remove(const char *id, Error **errp) +{ + Chardev *chr; + + chr = qemu_chr_find(id); + if (chr == NULL) { + error_setg(errp, "Chardev '%s' not found", id); + return; + } + if (qemu_chr_is_busy(chr)) { + error_setg(errp, "Chardev '%s' is busy", id); + return; + } + if (qemu_chr_replay(chr)) { + error_setg(errp, + "Chardev '%s' cannot be unplugged in record/replay mode", id); + return; + } + qemu_chr_delete(chr); +} + +void qemu_chr_cleanup(void) +{ + Chardev *chr, *tmp; + + QTAILQ_FOREACH_SAFE(chr, &chardevs, next, tmp) { + qemu_chr_delete(chr); + } +} + +static void register_types(void) +{ + type_register_static(&char_type_info); +#ifndef _WIN32 + type_register_static(&char_fd_type_info); +#else + type_register_static(&char_win_type_info); + type_register_static(&char_win_stdio_type_info); +#endif + type_register_static(&char_null_type_info); + type_register_static(&char_socket_type_info); + type_register_static(&char_udp_type_info); + type_register_static(&char_ringbuf_type_info); + type_register_static(&char_file_type_info); + type_register_static(&char_stdio_type_info); +#ifdef HAVE_CHARDEV_SERIAL + type_register_static(&char_serial_type_info); +#endif +#ifdef HAVE_CHARDEV_PARPORT + type_register_static(&char_parallel_type_info); +#endif +#ifdef HAVE_CHARDEV_PTY + type_register_static(&char_pty_type_info); +#endif +#ifdef _WIN32 + type_register_static(&char_console_type_info); +#endif + type_register_static(&char_pipe_type_info); + type_register_static(&char_mux_type_info); + type_register_static(&char_memory_type_info); + + /* 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); |