diff options
| author |   RajithaY <rajithax.yerrumsetty@intel.com> | 2017-04-25 03:31:15 -0700 |
|---|---|---|
| committer | Rajitha Yerrumchetty <rajithax.yerrumsetty@intel.com> | 2017-05-22 06:48:08 +0000 |
| commit | bb756eebdac6fd24e8919e2c43f7d2c8c4091f59 (patch) | |
| tree | ca11e03542edf2d8f631efeca5e1626d211107e3 /qemu/qemu-char.c | |
| parent | a14b48d18a9ed03ec191cf16b162206998a895ce (diff) | |
Adding qemu as a submodule of KVMFORNFV
This Patch includes the changes to add qemu as a submodule to
kvmfornfv repo and make use of the updated latest qemu for the
execution of all testcase
Change-Id: I1280af507a857675c7f81d30c95255635667bdd7
Signed-off-by:RajithaY<rajithax.yerrumsetty@intel.com>
Diffstat (limited to 'qemu/qemu-char.c')
| -rw-r--r-- | qemu/qemu-char.c | 4609 |
1 files changed, 0 insertions, 4609 deletions
diff --git a/qemu/qemu-char.c b/qemu/qemu-char.c deleted file mode 100644 index b597ee19c..000000000 --- a/qemu/qemu-char.c +++ /dev/null @@ -1,4609 +0,0 @@ -/* - * QEMU System Emulator - * - * Copyright (c) 2003-2008 Fabrice Bellard - * - * Permission is hereby granted, free of charge, to any person obtaining a copy - * of this software and associated documentation files (the "Software"), to deal - * in the Software without restriction, including without limitation the rights - * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell - * copies of the Software, and to permit persons to whom the Software is - * furnished to do so, subject to the following conditions: - * - * The above copyright notice and this permission notice shall be included in - * all copies or substantial portions of the Software. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR - * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, - * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL - * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER - * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, - * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN - * THE SOFTWARE. - */ -#include "qemu/osdep.h" -#include "qemu-common.h" -#include "qemu/cutils.h" -#include "monitor/monitor.h" -#include "sysemu/sysemu.h" -#include "sysemu/block-backend.h" -#include "qemu/error-report.h" -#include "qemu/timer.h" -#include "sysemu/char.h" -#include "hw/usb.h" -#include "qmp-commands.h" -#include "qapi/qmp-input-visitor.h" -#include "qapi/qmp-output-visitor.h" -#include "qapi-visit.h" -#include "qemu/base64.h" -#include "io/channel-socket.h" -#include "io/channel-file.h" -#include "io/channel-tls.h" -#include "sysemu/replay.h" - -#include <zlib.h> - -#ifndef _WIN32 -#include <sys/times.h> -#include <sys/wait.h> -#include <termios.h> -#include <sys/mman.h> -#include <sys/ioctl.h> -#include <sys/resource.h> -#include <sys/socket.h> -#include <netinet/in.h> -#include <net/if.h> -#include <arpa/inet.h> -#include <netdb.h> -#include <sys/select.h> -#ifdef CONFIG_BSD -#if defined(__FreeBSD__) || defined(__FreeBSD_kernel__) -#include <dev/ppbus/ppi.h> -#include <dev/ppbus/ppbconf.h> -#elif defined(__DragonFly__) -#include <dev/misc/ppi/ppi.h> -#include <bus/ppbus/ppbconf.h> -#endif -#else -#ifdef __linux__ -#include <linux/ppdev.h> -#include <linux/parport.h> -#endif -#ifdef __sun__ -#include <sys/ethernet.h> -#include <sys/sockio.h> -#include <netinet/arp.h> -#include <netinet/in.h> -#include <netinet/in_systm.h> -#include <netinet/ip.h> -#include <netinet/ip_icmp.h> // must come after ip.h -#include <netinet/udp.h> -#include <netinet/tcp.h> -#endif -#endif -#endif - -#include "qemu/sockets.h" -#include "ui/qemu-spice.h" - -#define READ_BUF_LEN 4096 -#define READ_RETRIES 10 -#define TCP_MAX_FDS 16 - -/***********************************************************/ -/* Socket address helpers */ - -static char *SocketAddress_to_str(const char *prefix, SocketAddress *addr, - bool is_listen, bool is_telnet) -{ - switch (addr->type) { - case SOCKET_ADDRESS_KIND_INET: - return g_strdup_printf("%s%s:%s:%s%s", prefix, - is_telnet ? "telnet" : "tcp", - addr->u.inet.data->host, - addr->u.inet.data->port, - is_listen ? ",server" : ""); - break; - case SOCKET_ADDRESS_KIND_UNIX: - return g_strdup_printf("%sunix:%s%s", prefix, - addr->u.q_unix.data->path, - is_listen ? ",server" : ""); - break; - case SOCKET_ADDRESS_KIND_FD: - return g_strdup_printf("%sfd:%s%s", prefix, addr->u.fd.data->str, - is_listen ? ",server" : ""); - break; - default: - abort(); - } -} - -static char *sockaddr_to_str(struct sockaddr_storage *ss, socklen_t ss_len, - struct sockaddr_storage *ps, socklen_t ps_len, - bool is_listen, bool is_telnet) -{ - char shost[NI_MAXHOST], sserv[NI_MAXSERV]; - char phost[NI_MAXHOST], pserv[NI_MAXSERV]; - const char *left = "", *right = ""; - - switch (ss->ss_family) { -#ifndef _WIN32 - case AF_UNIX: - return g_strdup_printf("unix:%s%s", - ((struct sockaddr_un *)(ss))->sun_path, - is_listen ? ",server" : ""); -#endif - case AF_INET6: - left = "["; - right = "]"; - /* fall through */ - case AF_INET: - getnameinfo((struct sockaddr *) ss, ss_len, shost, sizeof(shost), - sserv, sizeof(sserv), NI_NUMERICHOST | NI_NUMERICSERV); - getnameinfo((struct sockaddr *) ps, ps_len, phost, sizeof(phost), - pserv, sizeof(pserv), NI_NUMERICHOST | NI_NUMERICSERV); - return g_strdup_printf("%s:%s%s%s:%s%s <-> %s%s%s:%s", - is_telnet ? "telnet" : "tcp", - left, shost, right, sserv, - is_listen ? ",server" : "", - left, phost, right, pserv); - - default: - return g_strdup_printf("unknown"); - } -} - -/***********************************************************/ -/* character device */ - -static QTAILQ_HEAD(CharDriverStateHead, CharDriverState) chardevs = - QTAILQ_HEAD_INITIALIZER(chardevs); - -static void qemu_chr_free_common(CharDriverState *chr); - -CharDriverState *qemu_chr_alloc(ChardevCommon *backend, Error **errp) -{ - CharDriverState *chr = g_malloc0(sizeof(CharDriverState)); - qemu_mutex_init(&chr->chr_write_lock); - - if (backend->has_logfile) { - int flags = O_WRONLY | O_CREAT; - if (backend->has_logappend && - backend->logappend) { - flags |= O_APPEND; - } else { - flags |= O_TRUNC; - } - chr->logfd = qemu_open(backend->logfile, flags, 0666); - if (chr->logfd < 0) { - error_setg_errno(errp, errno, - "Unable to open logfile %s", - backend->logfile); - g_free(chr); - return NULL; - } - } else { - chr->logfd = -1; - } - - return chr; -} - -void qemu_chr_be_event(CharDriverState *s, int event) -{ - /* Keep track if the char device is open */ - switch (event) { - case CHR_EVENT_OPENED: - s->be_open = 1; - break; - case CHR_EVENT_CLOSED: - s->be_open = 0; - break; - } - - if (!s->chr_event) - return; - s->chr_event(s->handler_opaque, event); -} - -void qemu_chr_be_generic_open(CharDriverState *s) -{ - qemu_chr_be_event(s, CHR_EVENT_OPENED); -} - - -/* Not reporting errors from writing to logfile, as logs are - * defined to be "best effort" only */ -static void qemu_chr_fe_write_log(CharDriverState *s, - const uint8_t *buf, size_t len) -{ - size_t done = 0; - ssize_t ret; - - if (s->logfd < 0) { - return; - } - - while (done < len) { - retry: - ret = write(s->logfd, buf + done, len - done); - if (ret == -1 && errno == EAGAIN) { - g_usleep(100); - goto retry; - } - - if (ret <= 0) { - return; - } - done += ret; - } -} - -static int qemu_chr_fe_write_buffer(CharDriverState *s, const uint8_t *buf, int len, int *offset) -{ - int res = 0; - *offset = 0; - - qemu_mutex_lock(&s->chr_write_lock); - while (*offset < len) { - retry: - res = s->chr_write(s, buf + *offset, len - *offset); - if (res < 0 && errno == EAGAIN) { - g_usleep(100); - goto retry; - } - - if (res <= 0) { - break; - } - - *offset += res; - } - if (*offset > 0) { - qemu_chr_fe_write_log(s, buf, *offset); - } - qemu_mutex_unlock(&s->chr_write_lock); - - return res; -} - -int qemu_chr_fe_write(CharDriverState *s, const uint8_t *buf, int len) -{ - int ret; - - if (s->replay && replay_mode == REPLAY_MODE_PLAY) { - int offset; - replay_char_write_event_load(&ret, &offset); - assert(offset <= len); - qemu_chr_fe_write_buffer(s, buf, offset, &offset); - return ret; - } - - qemu_mutex_lock(&s->chr_write_lock); - ret = s->chr_write(s, buf, len); - - if (ret > 0) { - qemu_chr_fe_write_log(s, buf, ret); - } - - qemu_mutex_unlock(&s->chr_write_lock); - - if (s->replay && replay_mode == REPLAY_MODE_RECORD) { - replay_char_write_event_save(ret, ret < 0 ? 0 : ret); - } - - return ret; -} - -int qemu_chr_fe_write_all(CharDriverState *s, const uint8_t *buf, int len) -{ - int offset; - int res; - - if (s->replay && replay_mode == REPLAY_MODE_PLAY) { - replay_char_write_event_load(&res, &offset); - assert(offset <= len); - qemu_chr_fe_write_buffer(s, buf, offset, &offset); - return res; - } - - res = qemu_chr_fe_write_buffer(s, buf, len, &offset); - - if (s->replay && replay_mode == REPLAY_MODE_RECORD) { - replay_char_write_event_save(res, offset); - } - - if (res < 0) { - return res; - } - return offset; -} - -int qemu_chr_fe_read_all(CharDriverState *s, uint8_t *buf, int len) -{ - int offset = 0, counter = 10; - int res; - - if (!s->chr_sync_read) { - return 0; - } - - if (s->replay && replay_mode == REPLAY_MODE_PLAY) { - return replay_char_read_all_load(buf); - } - - while (offset < len) { - retry: - res = s->chr_sync_read(s, buf + offset, len - offset); - if (res == -1 && errno == EAGAIN) { - g_usleep(100); - goto retry; - } - - if (res == 0) { - break; - } - - if (res < 0) { - if (s->replay && replay_mode == REPLAY_MODE_RECORD) { - replay_char_read_all_save_error(res); - } - return res; - } - - offset += res; - - if (!counter--) { - break; - } - } - - if (s->replay && replay_mode == REPLAY_MODE_RECORD) { - replay_char_read_all_save_buf(buf, offset); - } - return offset; -} - -int qemu_chr_fe_ioctl(CharDriverState *s, int cmd, void *arg) -{ - int res; - if (!s->chr_ioctl || s->replay) { - res = -ENOTSUP; - } else { - res = s->chr_ioctl(s, cmd, arg); - } - - return res; -} - -int qemu_chr_be_can_write(CharDriverState *s) -{ - if (!s->chr_can_read) - return 0; - return s->chr_can_read(s->handler_opaque); -} - -void qemu_chr_be_write_impl(CharDriverState *s, uint8_t *buf, int len) -{ - if (s->chr_read) { - s->chr_read(s->handler_opaque, buf, len); - } -} - -void qemu_chr_be_write(CharDriverState *s, uint8_t *buf, int len) -{ - if (s->replay) { - if (replay_mode == REPLAY_MODE_PLAY) { - return; - } - replay_chr_be_write(s, buf, len); - } else { - qemu_chr_be_write_impl(s, buf, len); - } -} - -int qemu_chr_fe_get_msgfd(CharDriverState *s) -{ - int fd; - int res = (qemu_chr_fe_get_msgfds(s, &fd, 1) == 1) ? fd : -1; - if (s->replay) { - fprintf(stderr, - "Replay: get msgfd is not supported for serial devices yet\n"); - exit(1); - } - return res; -} - -int qemu_chr_fe_get_msgfds(CharDriverState *s, int *fds, int len) -{ - return s->get_msgfds ? s->get_msgfds(s, fds, len) : -1; -} - -int qemu_chr_fe_set_msgfds(CharDriverState *s, int *fds, int num) -{ - return s->set_msgfds ? s->set_msgfds(s, fds, num) : -1; -} - -int qemu_chr_add_client(CharDriverState *s, int fd) -{ - return s->chr_add_client ? s->chr_add_client(s, fd) : -1; -} - -void qemu_chr_accept_input(CharDriverState *s) -{ - if (s->chr_accept_input) - s->chr_accept_input(s); - qemu_notify_event(); -} - -void qemu_chr_fe_printf(CharDriverState *s, const char *fmt, ...) -{ - char buf[READ_BUF_LEN]; - va_list ap; - va_start(ap, fmt); - vsnprintf(buf, sizeof(buf), fmt, ap); - qemu_chr_fe_write(s, (uint8_t *)buf, strlen(buf)); - va_end(ap); -} - -static void remove_fd_in_watch(CharDriverState *chr); - -void qemu_chr_add_handlers(CharDriverState *s, - IOCanReadHandler *fd_can_read, - IOReadHandler *fd_read, - IOEventHandler *fd_event, - void *opaque) -{ - int fe_open; - - if (!opaque && !fd_can_read && !fd_read && !fd_event) { - fe_open = 0; - remove_fd_in_watch(s); - } else { - fe_open = 1; - } - s->chr_can_read = fd_can_read; - s->chr_read = fd_read; - s->chr_event = fd_event; - s->handler_opaque = opaque; - if (fe_open && s->chr_update_read_handler) - s->chr_update_read_handler(s); - - if (!s->explicit_fe_open) { - qemu_chr_fe_set_open(s, fe_open); - } - - /* We're connecting to an already opened device, so let's make sure we - also get the open event */ - if (fe_open && s->be_open) { - qemu_chr_be_generic_open(s); - } -} - -static int null_chr_write(CharDriverState *chr, const uint8_t *buf, int len) -{ - return len; -} - -static CharDriverState *qemu_chr_open_null(const char *id, - ChardevBackend *backend, - ChardevReturn *ret, - Error **errp) -{ - CharDriverState *chr; - ChardevCommon *common = backend->u.null.data; - - chr = qemu_chr_alloc(common, errp); - if (!chr) { - return NULL; - } - chr->chr_write = null_chr_write; - chr->explicit_be_open = true; - return chr; -} - -/* MUX driver for serial I/O splitting */ -#define MAX_MUX 4 -#define MUX_BUFFER_SIZE 32 /* Must be a power of 2. */ -#define MUX_BUFFER_MASK (MUX_BUFFER_SIZE - 1) -typedef struct { - IOCanReadHandler *chr_can_read[MAX_MUX]; - IOReadHandler *chr_read[MAX_MUX]; - IOEventHandler *chr_event[MAX_MUX]; - void *ext_opaque[MAX_MUX]; - CharDriverState *drv; - int focus; - int mux_cnt; - int term_got_escape; - int max_size; - /* Intermediate input buffer allows to catch escape sequences even if the - currently active device is not accepting any input - but only until it - is full as well. */ - unsigned char buffer[MAX_MUX][MUX_BUFFER_SIZE]; - int prod[MAX_MUX]; - int cons[MAX_MUX]; - int timestamps; - - /* Protected by the CharDriverState chr_write_lock. */ - int linestart; - int64_t timestamps_start; -} MuxDriver; - - -/* Called with chr_write_lock held. */ -static int mux_chr_write(CharDriverState *chr, const uint8_t *buf, int len) -{ - MuxDriver *d = chr->opaque; - int ret; - if (!d->timestamps) { - ret = qemu_chr_fe_write(d->drv, buf, len); - } else { - int i; - - ret = 0; - for (i = 0; i < len; i++) { - if (d->linestart) { - char buf1[64]; - int64_t ti; - int secs; - - ti = qemu_clock_get_ms(QEMU_CLOCK_REALTIME); - if (d->timestamps_start == -1) - d->timestamps_start = ti; - ti -= d->timestamps_start; - secs = ti / 1000; - snprintf(buf1, sizeof(buf1), - "[%02d:%02d:%02d.%03d] ", - secs / 3600, - (secs / 60) % 60, - secs % 60, - (int)(ti % 1000)); - qemu_chr_fe_write(d->drv, (uint8_t *)buf1, strlen(buf1)); - d->linestart = 0; - } - ret += qemu_chr_fe_write(d->drv, buf+i, 1); - if (buf[i] == '\n') { - d->linestart = 1; - } - } - } - return ret; -} - -static const char * const mux_help[] = { - "% h print this help\n\r", - "% x exit emulator\n\r", - "% s save disk data back to file (if -snapshot)\n\r", - "% t toggle console timestamps\n\r", - "% b send break (magic sysrq)\n\r", - "% c switch between console and monitor\n\r", - "% % sends %\n\r", - NULL -}; - -int term_escape_char = 0x01; /* ctrl-a is used for escape */ -static void mux_print_help(CharDriverState *chr) -{ - int i, j; - char ebuf[15] = "Escape-Char"; - char cbuf[50] = "\n\r"; - - if (term_escape_char > 0 && term_escape_char < 26) { - snprintf(cbuf, sizeof(cbuf), "\n\r"); - snprintf(ebuf, sizeof(ebuf), "C-%c", term_escape_char - 1 + 'a'); - } else { - snprintf(cbuf, sizeof(cbuf), - "\n\rEscape-Char set to Ascii: 0x%02x\n\r\n\r", - term_escape_char); - } - qemu_chr_fe_write(chr, (uint8_t *)cbuf, strlen(cbuf)); - for (i = 0; mux_help[i] != NULL; i++) { - for (j=0; mux_help[i][j] != '\0'; j++) { - if (mux_help[i][j] == '%') - qemu_chr_fe_write(chr, (uint8_t *)ebuf, strlen(ebuf)); - else - qemu_chr_fe_write(chr, (uint8_t *)&mux_help[i][j], 1); - } - } -} - -static void mux_chr_send_event(MuxDriver *d, int mux_nr, int event) -{ - if (d->chr_event[mux_nr]) - d->chr_event[mux_nr](d->ext_opaque[mux_nr], event); -} - -static int mux_proc_byte(CharDriverState *chr, MuxDriver *d, int ch) -{ - if (d->term_got_escape) { - d->term_got_escape = 0; - if (ch == term_escape_char) - goto send_char; - switch(ch) { - case '?': - case 'h': - mux_print_help(chr); - break; - case 'x': - { - const char *term = "QEMU: Terminated\n\r"; - qemu_chr_fe_write(chr, (uint8_t *)term, strlen(term)); - exit(0); - break; - } - case 's': - blk_commit_all(); - break; - case 'b': - qemu_chr_be_event(chr, CHR_EVENT_BREAK); - break; - case 'c': - /* Switch to the next registered device */ - mux_chr_send_event(d, d->focus, CHR_EVENT_MUX_OUT); - d->focus++; - if (d->focus >= d->mux_cnt) - d->focus = 0; - mux_chr_send_event(d, d->focus, CHR_EVENT_MUX_IN); - break; - case 't': - d->timestamps = !d->timestamps; - d->timestamps_start = -1; - d->linestart = 0; - break; - } - } else if (ch == term_escape_char) { - d->term_got_escape = 1; - } else { - send_char: - return 1; - } - return 0; -} - -static void mux_chr_accept_input(CharDriverState *chr) -{ - MuxDriver *d = chr->opaque; - int m = d->focus; - - while (d->prod[m] != d->cons[m] && - d->chr_can_read[m] && - d->chr_can_read[m](d->ext_opaque[m])) { - d->chr_read[m](d->ext_opaque[m], - &d->buffer[m][d->cons[m]++ & MUX_BUFFER_MASK], 1); - } -} - -static int mux_chr_can_read(void *opaque) -{ - CharDriverState *chr = opaque; - MuxDriver *d = chr->opaque; - int m = d->focus; - - if ((d->prod[m] - d->cons[m]) < MUX_BUFFER_SIZE) - return 1; - if (d->chr_can_read[m]) - return d->chr_can_read[m](d->ext_opaque[m]); - return 0; -} - -static void mux_chr_read(void *opaque, const uint8_t *buf, int size) -{ - CharDriverState *chr = opaque; - MuxDriver *d = chr->opaque; - int m = d->focus; - int i; - - mux_chr_accept_input (opaque); - - for(i = 0; i < size; i++) - if (mux_proc_byte(chr, d, buf[i])) { - if (d->prod[m] == d->cons[m] && - d->chr_can_read[m] && - d->chr_can_read[m](d->ext_opaque[m])) - d->chr_read[m](d->ext_opaque[m], &buf[i], 1); - else - d->buffer[m][d->prod[m]++ & MUX_BUFFER_MASK] = buf[i]; - } -} - -static void mux_chr_event(void *opaque, int event) -{ - CharDriverState *chr = opaque; - MuxDriver *d = chr->opaque; - int i; - - /* Send the event to all registered listeners */ - for (i = 0; i < d->mux_cnt; i++) - mux_chr_send_event(d, i, event); -} - -static void mux_chr_update_read_handler(CharDriverState *chr) -{ - MuxDriver *d = chr->opaque; - - if (d->mux_cnt >= MAX_MUX) { - fprintf(stderr, "Cannot add I/O handlers, MUX array is full\n"); - return; - } - d->ext_opaque[d->mux_cnt] = chr->handler_opaque; - d->chr_can_read[d->mux_cnt] = chr->chr_can_read; - d->chr_read[d->mux_cnt] = chr->chr_read; - d->chr_event[d->mux_cnt] = chr->chr_event; - /* Fix up the real driver with mux routines */ - if (d->mux_cnt == 0) { - qemu_chr_add_handlers(d->drv, mux_chr_can_read, mux_chr_read, - mux_chr_event, chr); - } - if (d->focus != -1) { - mux_chr_send_event(d, d->focus, CHR_EVENT_MUX_OUT); - } - d->focus = d->mux_cnt; - d->mux_cnt++; - mux_chr_send_event(d, d->focus, CHR_EVENT_MUX_IN); -} - -static bool muxes_realized; - -/** - * Called after processing of default and command-line-specified - * chardevs to deliver CHR_EVENT_OPENED events to any FEs attached - * to a mux chardev. This is done here to ensure that - * output/prompts/banners are only displayed for the FE that has - * focus when initial command-line processing/machine init is - * completed. - * - * After this point, any new FE attached to any new or existing - * mux will receive CHR_EVENT_OPENED notifications for the BE - * immediately. - */ -static void muxes_realize_done(Notifier *notifier, void *unused) -{ - CharDriverState *chr; - - QTAILQ_FOREACH(chr, &chardevs, next) { - if (chr->is_mux) { - MuxDriver *d = chr->opaque; - int i; - - /* send OPENED to all already-attached FEs */ - for (i = 0; i < d->mux_cnt; i++) { - mux_chr_send_event(d, i, CHR_EVENT_OPENED); - } - /* mark mux as OPENED so any new FEs will immediately receive - * OPENED event - */ - qemu_chr_be_generic_open(chr); - } - } - muxes_realized = true; -} - -static Notifier muxes_realize_notify = { - .notify = muxes_realize_done, -}; - -static GSource *mux_chr_add_watch(CharDriverState *s, GIOCondition cond) -{ - MuxDriver *d = s->opaque; - return d->drv->chr_add_watch(d->drv, cond); -} - -static CharDriverState *qemu_chr_open_mux(const char *id, - ChardevBackend *backend, - ChardevReturn *ret, Error **errp) -{ - ChardevMux *mux = backend->u.mux.data; - CharDriverState *chr, *drv; - MuxDriver *d; - ChardevCommon *common = qapi_ChardevMux_base(mux); - - drv = qemu_chr_find(mux->chardev); - if (drv == NULL) { - error_setg(errp, "mux: base chardev %s not found", mux->chardev); - return NULL; - } - - chr = qemu_chr_alloc(common, errp); - if (!chr) { - return NULL; - } - d = g_new0(MuxDriver, 1); - - chr->opaque = d; - d->drv = drv; - d->focus = -1; - chr->chr_write = mux_chr_write; - chr->chr_update_read_handler = mux_chr_update_read_handler; - chr->chr_accept_input = mux_chr_accept_input; - /* Frontend guest-open / -close notification is not support with muxes */ - chr->chr_set_fe_open = NULL; - if (drv->chr_add_watch) { - chr->chr_add_watch = mux_chr_add_watch; - } - /* only default to opened state if we've realized the initial - * set of muxes - */ - chr->explicit_be_open = muxes_realized ? 0 : 1; - chr->is_mux = 1; - - return chr; -} - - -typedef struct IOWatchPoll -{ - GSource parent; - - QIOChannel *ioc; - GSource *src; - - IOCanReadHandler *fd_can_read; - GSourceFunc fd_read; - void *opaque; -} IOWatchPoll; - -static IOWatchPoll *io_watch_poll_from_source(GSource *source) -{ - return container_of(source, IOWatchPoll, parent); -} - -static gboolean io_watch_poll_prepare(GSource *source, gint *timeout_) -{ - IOWatchPoll *iwp = io_watch_poll_from_source(source); - bool now_active = iwp->fd_can_read(iwp->opaque) > 0; - bool was_active = iwp->src != NULL; - if (was_active == now_active) { - return FALSE; - } - - if (now_active) { - iwp->src = qio_channel_create_watch( - iwp->ioc, G_IO_IN | G_IO_ERR | G_IO_HUP | G_IO_NVAL); - g_source_set_callback(iwp->src, iwp->fd_read, iwp->opaque, NULL); - g_source_attach(iwp->src, NULL); - } else { - g_source_destroy(iwp->src); - g_source_unref(iwp->src); - iwp->src = NULL; - } - return FALSE; -} - -static gboolean io_watch_poll_check(GSource *source) -{ - return FALSE; -} - -static gboolean io_watch_poll_dispatch(GSource *source, GSourceFunc callback, - gpointer user_data) -{ - abort(); -} - -static void io_watch_poll_finalize(GSource *source) -{ - /* Due to a glib bug, removing the last reference to a source - * inside a finalize callback causes recursive locking (and a - * deadlock). This is not a problem inside other callbacks, - * including dispatch callbacks, so we call io_remove_watch_poll - * to remove this source. At this point, iwp->src must - * be NULL, or we would leak it. - * - * This would be solved much more elegantly by child sources, - * but we support older glib versions that do not have them. - */ - IOWatchPoll *iwp = io_watch_poll_from_source(source); - assert(iwp->src == NULL); -} - -static GSourceFuncs io_watch_poll_funcs = { - .prepare = io_watch_poll_prepare, - .check = io_watch_poll_check, - .dispatch = io_watch_poll_dispatch, - .finalize = io_watch_poll_finalize, -}; - -/* Can only be used for read */ -static guint io_add_watch_poll(QIOChannel *ioc, - IOCanReadHandler *fd_can_read, - QIOChannelFunc fd_read, - gpointer user_data) -{ - IOWatchPoll *iwp; - int tag; - - iwp = (IOWatchPoll *) g_source_new(&io_watch_poll_funcs, sizeof(IOWatchPoll)); - iwp->fd_can_read = fd_can_read; - iwp->opaque = user_data; - iwp->ioc = ioc; - iwp->fd_read = (GSourceFunc) fd_read; - iwp->src = NULL; - - tag = g_source_attach(&iwp->parent, NULL); - g_source_unref(&iwp->parent); - return tag; -} - -static void io_remove_watch_poll(guint tag) -{ - GSource *source; - IOWatchPoll *iwp; - - g_return_if_fail (tag > 0); - - source = g_main_context_find_source_by_id(NULL, tag); - g_return_if_fail (source != NULL); - - iwp = io_watch_poll_from_source(source); - if (iwp->src) { - g_source_destroy(iwp->src); - g_source_unref(iwp->src); - iwp->src = NULL; - } - g_source_destroy(&iwp->parent); -} - -static void remove_fd_in_watch(CharDriverState *chr) -{ - if (chr->fd_in_tag) { - io_remove_watch_poll(chr->fd_in_tag); - chr->fd_in_tag = 0; - } -} - - -static int io_channel_send_full(QIOChannel *ioc, - const void *buf, size_t len, - int *fds, size_t nfds) -{ - size_t offset = 0; - - while (offset < len) { - ssize_t ret = 0; - struct iovec iov = { .iov_base = (char *)buf + offset, - .iov_len = len - offset }; - - ret = qio_channel_writev_full( - ioc, &iov, 1, - fds, nfds, NULL); - if (ret == QIO_CHANNEL_ERR_BLOCK) { - if (offset) { - return offset; - } - - errno = EAGAIN; - return -1; - } else if (ret < 0) { - errno = EINVAL; - return -1; - } - - offset += ret; - } - - return offset; -} - - -#ifndef _WIN32 -static int io_channel_send(QIOChannel *ioc, const void *buf, size_t len) -{ - return io_channel_send_full(ioc, buf, len, NULL, 0); -} - - -typedef struct FDCharDriver { - CharDriverState *chr; - QIOChannel *ioc_in, *ioc_out; - int max_size; -} FDCharDriver; - -/* Called with chr_write_lock held. */ -static int fd_chr_write(CharDriverState *chr, const uint8_t *buf, int len) -{ - FDCharDriver *s = chr->opaque; - - return io_channel_send(s->ioc_out, buf, len); -} - -static gboolean fd_chr_read(QIOChannel *chan, GIOCondition cond, void *opaque) -{ - CharDriverState *chr = opaque; - FDCharDriver *s = chr->opaque; - int len; - uint8_t buf[READ_BUF_LEN]; - ssize_t ret; - - len = sizeof(buf); - if (len > s->max_size) { - len = s->max_size; - } - if (len == 0) { - return TRUE; - } - - ret = qio_channel_read( - chan, (gchar *)buf, len, NULL); - if (ret == 0) { - remove_fd_in_watch(chr); - qemu_chr_be_event(chr, CHR_EVENT_CLOSED); - return FALSE; - } - if (ret > 0) { - qemu_chr_be_write(chr, buf, ret); - } - - return TRUE; -} - -static int fd_chr_read_poll(void *opaque) -{ - CharDriverState *chr = opaque; - FDCharDriver *s = chr->opaque; - - s->max_size = qemu_chr_be_can_write(chr); - return s->max_size; -} - -static GSource *fd_chr_add_watch(CharDriverState *chr, GIOCondition cond) -{ - FDCharDriver *s = chr->opaque; - return qio_channel_create_watch(s->ioc_out, cond); -} - -static void fd_chr_update_read_handler(CharDriverState *chr) -{ - FDCharDriver *s = chr->opaque; - - remove_fd_in_watch(chr); - if (s->ioc_in) { - chr->fd_in_tag = io_add_watch_poll(s->ioc_in, - fd_chr_read_poll, - fd_chr_read, chr); - } -} - -static void fd_chr_close(struct CharDriverState *chr) -{ - FDCharDriver *s = chr->opaque; - - remove_fd_in_watch(chr); - if (s->ioc_in) { - object_unref(OBJECT(s->ioc_in)); - } - if (s->ioc_out) { - object_unref(OBJECT(s->ioc_out)); - } - - g_free(s); - qemu_chr_be_event(chr, CHR_EVENT_CLOSED); -} - -/* open a character device to a unix fd */ -static CharDriverState *qemu_chr_open_fd(int fd_in, int fd_out, - ChardevCommon *backend, Error **errp) -{ - CharDriverState *chr; - FDCharDriver *s; - - chr = qemu_chr_alloc(backend, errp); - if (!chr) { - return NULL; - } - s = g_new0(FDCharDriver, 1); - s->ioc_in = QIO_CHANNEL(qio_channel_file_new_fd(fd_in)); - s->ioc_out = QIO_CHANNEL(qio_channel_file_new_fd(fd_out)); - qemu_set_nonblock(fd_out); - s->chr = chr; - chr->opaque = s; - chr->chr_add_watch = fd_chr_add_watch; - chr->chr_write = fd_chr_write; - chr->chr_update_read_handler = fd_chr_update_read_handler; - chr->chr_close = fd_chr_close; - - return chr; -} - -static CharDriverState *qemu_chr_open_pipe(const char *id, - ChardevBackend *backend, - ChardevReturn *ret, - Error **errp) -{ - ChardevHostdev *opts = backend->u.pipe.data; - int fd_in, fd_out; - char *filename_in; - char *filename_out; - const char *filename = opts->device; - ChardevCommon *common = qapi_ChardevHostdev_base(opts); - - - filename_in = g_strdup_printf("%s.in", filename); - filename_out = g_strdup_printf("%s.out", filename); - TFR(fd_in = qemu_open(filename_in, O_RDWR | O_BINARY)); - TFR(fd_out = qemu_open(filename_out, O_RDWR | O_BINARY)); - g_free(filename_in); - g_free(filename_out); - if (fd_in < 0 || fd_out < 0) { - if (fd_in >= 0) - close(fd_in); - if (fd_out >= 0) - close(fd_out); - TFR(fd_in = fd_out = qemu_open(filename, O_RDWR | O_BINARY)); - if (fd_in < 0) { - error_setg_file_open(errp, errno, filename); - return NULL; - } - } - return qemu_chr_open_fd(fd_in, fd_out, common, errp); -} - -/* init terminal so that we can grab keys */ -static struct termios oldtty; -static int old_fd0_flags; -static bool stdio_in_use; -static bool stdio_allow_signal; -static bool stdio_echo_state; - -static void qemu_chr_set_echo_stdio(CharDriverState *chr, bool echo); - -static void term_exit(void) -{ - tcsetattr (0, TCSANOW, &oldtty); - fcntl(0, F_SETFL, old_fd0_flags); -} - -static void term_stdio_handler(int sig) -{ - /* restore echo after resume from suspend. */ - qemu_chr_set_echo_stdio(NULL, stdio_echo_state); -} - -static void qemu_chr_set_echo_stdio(CharDriverState *chr, bool echo) -{ - struct termios tty; - - stdio_echo_state = echo; - tty = oldtty; - if (!echo) { - tty.c_iflag &= ~(IGNBRK|BRKINT|PARMRK|ISTRIP - |INLCR|IGNCR|ICRNL|IXON); - tty.c_oflag |= OPOST; - tty.c_lflag &= ~(ECHO|ECHONL|ICANON|IEXTEN); - tty.c_cflag &= ~(CSIZE|PARENB); - tty.c_cflag |= CS8; - tty.c_cc[VMIN] = 1; - tty.c_cc[VTIME] = 0; - } - if (!stdio_allow_signal) - tty.c_lflag &= ~ISIG; - - tcsetattr (0, TCSANOW, &tty); -} - -static void qemu_chr_close_stdio(struct CharDriverState *chr) -{ - term_exit(); - fd_chr_close(chr); -} - -static CharDriverState *qemu_chr_open_stdio(const char *id, - ChardevBackend *backend, - ChardevReturn *ret, - Error **errp) -{ - ChardevStdio *opts = backend->u.stdio.data; - CharDriverState *chr; - struct sigaction act; - ChardevCommon *common = qapi_ChardevStdio_base(opts); - - if (is_daemonized()) { - error_setg(errp, "cannot use stdio with -daemonize"); - return NULL; - } - - if (stdio_in_use) { - error_setg(errp, "cannot use stdio by multiple character devices"); - return NULL; - } - - stdio_in_use = true; - old_fd0_flags = fcntl(0, F_GETFL); - tcgetattr(0, &oldtty); - qemu_set_nonblock(0); - atexit(term_exit); - - memset(&act, 0, sizeof(act)); - act.sa_handler = term_stdio_handler; - sigaction(SIGCONT, &act, NULL); - - chr = qemu_chr_open_fd(0, 1, common, errp); - chr->chr_close = qemu_chr_close_stdio; - chr->chr_set_echo = qemu_chr_set_echo_stdio; - if (opts->has_signal) { - stdio_allow_signal = opts->signal; - } - qemu_chr_fe_set_echo(chr, false); - - return chr; -} - -#if defined(__linux__) || defined(__sun__) || defined(__FreeBSD__) \ - || defined(__NetBSD__) || defined(__OpenBSD__) || defined(__DragonFly__) \ - || defined(__GLIBC__) - -#define HAVE_CHARDEV_SERIAL 1 -#define HAVE_CHARDEV_PTY 1 - -typedef struct { - QIOChannel *ioc; - int read_bytes; - - /* Protected by the CharDriverState chr_write_lock. */ - int connected; - guint timer_tag; - guint open_tag; -} PtyCharDriver; - -static void pty_chr_update_read_handler_locked(CharDriverState *chr); -static void pty_chr_state(CharDriverState *chr, int connected); - -static gboolean pty_chr_timer(gpointer opaque) -{ - struct CharDriverState *chr = opaque; - PtyCharDriver *s = chr->opaque; - - qemu_mutex_lock(&chr->chr_write_lock); - s->timer_tag = 0; - s->open_tag = 0; - if (!s->connected) { - /* Next poll ... */ - pty_chr_update_read_handler_locked(chr); - } - qemu_mutex_unlock(&chr->chr_write_lock); - return FALSE; -} - -/* Called with chr_write_lock held. */ -static void pty_chr_rearm_timer(CharDriverState *chr, int ms) -{ - PtyCharDriver *s = chr->opaque; - - if (s->timer_tag) { - g_source_remove(s->timer_tag); - s->timer_tag = 0; - } - - if (ms == 1000) { - s->timer_tag = g_timeout_add_seconds(1, pty_chr_timer, chr); - } else { - s->timer_tag = g_timeout_add(ms, pty_chr_timer, chr); - } -} - -/* Called with chr_write_lock held. */ -static void pty_chr_update_read_handler_locked(CharDriverState *chr) -{ - PtyCharDriver *s = chr->opaque; - GPollFD pfd; - int rc; - QIOChannelFile *fioc = QIO_CHANNEL_FILE(s->ioc); - - pfd.fd = fioc->fd; - pfd.events = G_IO_OUT; - pfd.revents = 0; - do { - rc = g_poll(&pfd, 1, 0); - } while (rc == -1 && errno == EINTR); - assert(rc >= 0); - - if (pfd.revents & G_IO_HUP) { - pty_chr_state(chr, 0); - } else { - pty_chr_state(chr, 1); - } -} - -static void pty_chr_update_read_handler(CharDriverState *chr) -{ - qemu_mutex_lock(&chr->chr_write_lock); - pty_chr_update_read_handler_locked(chr); - qemu_mutex_unlock(&chr->chr_write_lock); -} - -/* Called with chr_write_lock held. */ -static int pty_chr_write(CharDriverState *chr, const uint8_t *buf, int len) -{ - PtyCharDriver *s = chr->opaque; - - if (!s->connected) { - /* guest sends data, check for (re-)connect */ - pty_chr_update_read_handler_locked(chr); - if (!s->connected) { - return 0; - } - } - return io_channel_send(s->ioc, buf, len); -} - -static GSource *pty_chr_add_watch(CharDriverState *chr, GIOCondition cond) -{ - PtyCharDriver *s = chr->opaque; - if (!s->connected) { - return NULL; - } - return qio_channel_create_watch(s->ioc, cond); -} - -static int pty_chr_read_poll(void *opaque) -{ - CharDriverState *chr = opaque; - PtyCharDriver *s = chr->opaque; - - s->read_bytes = qemu_chr_be_can_write(chr); - return s->read_bytes; -} - -static gboolean pty_chr_read(QIOChannel *chan, GIOCondition cond, void *opaque) -{ - CharDriverState *chr = opaque; - PtyCharDriver *s = chr->opaque; - gsize len; - uint8_t buf[READ_BUF_LEN]; - ssize_t ret; - - len = sizeof(buf); - if (len > s->read_bytes) - len = s->read_bytes; - if (len == 0) { - return TRUE; - } - ret = qio_channel_read(s->ioc, (char *)buf, len, NULL); - if (ret <= 0) { - pty_chr_state(chr, 0); - return FALSE; - } else { - pty_chr_state(chr, 1); - qemu_chr_be_write(chr, buf, ret); - } - return TRUE; -} - -static gboolean qemu_chr_be_generic_open_func(gpointer opaque) -{ - CharDriverState *chr = opaque; - PtyCharDriver *s = chr->opaque; - - s->open_tag = 0; - qemu_chr_be_generic_open(chr); - return FALSE; -} - -/* Called with chr_write_lock held. */ -static void pty_chr_state(CharDriverState *chr, int connected) -{ - PtyCharDriver *s = chr->opaque; - - if (!connected) { - if (s->open_tag) { - g_source_remove(s->open_tag); - s->open_tag = 0; - } - remove_fd_in_watch(chr); - s->connected = 0; - /* (re-)connect poll interval for idle guests: once per second. - * We check more frequently in case the guests sends data to - * the virtual device linked to our pty. */ - pty_chr_rearm_timer(chr, 1000); - } else { - if (s->timer_tag) { - g_source_remove(s->timer_tag); - s->timer_tag = 0; - } - if (!s->connected) { - g_assert(s->open_tag == 0); - s->connected = 1; - s->open_tag = g_idle_add(qemu_chr_be_generic_open_func, chr); - } - if (!chr->fd_in_tag) { - chr->fd_in_tag = io_add_watch_poll(s->ioc, - pty_chr_read_poll, - pty_chr_read, chr); - } - } -} - -static void pty_chr_close(struct CharDriverState *chr) -{ - PtyCharDriver *s = chr->opaque; - - qemu_mutex_lock(&chr->chr_write_lock); - pty_chr_state(chr, 0); - object_unref(OBJECT(s->ioc)); - if (s->timer_tag) { - g_source_remove(s->timer_tag); - s->timer_tag = 0; - } - qemu_mutex_unlock(&chr->chr_write_lock); - g_free(s); - qemu_chr_be_event(chr, CHR_EVENT_CLOSED); -} - -static CharDriverState *qemu_chr_open_pty(const char *id, - ChardevBackend *backend, - ChardevReturn *ret, - Error **errp) -{ - CharDriverState *chr; - PtyCharDriver *s; - int master_fd, slave_fd; - char pty_name[PATH_MAX]; - ChardevCommon *common = backend->u.pty.data; - - master_fd = qemu_openpty_raw(&slave_fd, pty_name); - if (master_fd < 0) { - error_setg_errno(errp, errno, "Failed to create PTY"); - return NULL; - } - - close(slave_fd); - qemu_set_nonblock(master_fd); - - chr = qemu_chr_alloc(common, errp); - if (!chr) { - close(master_fd); - return NULL; - } - - chr->filename = g_strdup_printf("pty:%s", pty_name); - ret->pty = g_strdup(pty_name); - ret->has_pty = true; - - fprintf(stderr, "char device redirected to %s (label %s)\n", - pty_name, id); - - s = g_new0(PtyCharDriver, 1); - chr->opaque = s; - chr->chr_write = pty_chr_write; - chr->chr_update_read_handler = pty_chr_update_read_handler; - chr->chr_close = pty_chr_close; - chr->chr_add_watch = pty_chr_add_watch; - chr->explicit_be_open = true; - - s->ioc = QIO_CHANNEL(qio_channel_file_new_fd(master_fd)); - s->timer_tag = 0; - - return chr; -} - -static void tty_serial_init(int fd, int speed, - int parity, int data_bits, int stop_bits) -{ - struct termios tty; - speed_t spd; - -#if 0 - printf("tty_serial_init: speed=%d parity=%c data=%d stop=%d\n", - speed, parity, data_bits, stop_bits); -#endif - tcgetattr (fd, &tty); - -#define check_speed(val) if (speed <= val) { spd = B##val; break; } - speed = speed * 10 / 11; - do { - check_speed(50); - check_speed(75); - check_speed(110); - check_speed(134); - check_speed(150); - check_speed(200); - check_speed(300); - check_speed(600); - check_speed(1200); - check_speed(1800); - check_speed(2400); - check_speed(4800); - check_speed(9600); - check_speed(19200); - check_speed(38400); - /* Non-Posix values follow. They may be unsupported on some systems. */ - check_speed(57600); - check_speed(115200); -#ifdef B230400 - check_speed(230400); -#endif -#ifdef B460800 - check_speed(460800); -#endif -#ifdef B500000 - check_speed(500000); -#endif -#ifdef B576000 - check_speed(576000); -#endif -#ifdef B921600 - check_speed(921600); -#endif -#ifdef B1000000 - check_speed(1000000); -#endif -#ifdef B1152000 - check_speed(1152000); -#endif -#ifdef B1500000 - check_speed(1500000); -#endif -#ifdef B2000000 - check_speed(2000000); -#endif -#ifdef B2500000 - check_speed(2500000); -#endif -#ifdef B3000000 - check_speed(3000000); -#endif -#ifdef B3500000 - check_speed(3500000); -#endif -#ifdef B4000000 - check_speed(4000000); -#endif - spd = B115200; - } while (0); - - cfsetispeed(&tty, spd); - cfsetospeed(&tty, spd); - - tty.c_iflag &= ~(IGNBRK|BRKINT|PARMRK|ISTRIP - |INLCR|IGNCR|ICRNL|IXON); - tty.c_oflag |= OPOST; - tty.c_lflag &= ~(ECHO|ECHONL|ICANON|IEXTEN|ISIG); - tty.c_cflag &= ~(CSIZE|PARENB|PARODD|CRTSCTS|CSTOPB); - switch(data_bits) { - default: - case 8: - tty.c_cflag |= CS8; - break; - case 7: - tty.c_cflag |= CS7; - break; - case 6: - tty.c_cflag |= CS6; - break; - case 5: - tty.c_cflag |= CS5; - break; - } - switch(parity) { - default: - case 'N': - break; - case 'E': - tty.c_cflag |= PARENB; - break; - case 'O': - tty.c_cflag |= PARENB | PARODD; - break; - } - if (stop_bits == 2) - tty.c_cflag |= CSTOPB; - - tcsetattr (fd, TCSANOW, &tty); -} - -static int tty_serial_ioctl(CharDriverState *chr, int cmd, void *arg) -{ - FDCharDriver *s = chr->opaque; - QIOChannelFile *fioc = QIO_CHANNEL_FILE(s->ioc_in); - - switch(cmd) { - case CHR_IOCTL_SERIAL_SET_PARAMS: - { - QEMUSerialSetParams *ssp = arg; - tty_serial_init(fioc->fd, - ssp->speed, ssp->parity, - ssp->data_bits, ssp->stop_bits); - } - break; - case CHR_IOCTL_SERIAL_SET_BREAK: - { - int enable = *(int *)arg; - if (enable) { - tcsendbreak(fioc->fd, 1); - } - } - break; - case CHR_IOCTL_SERIAL_GET_TIOCM: - { - int sarg = 0; - int *targ = (int *)arg; - ioctl(fioc->fd, TIOCMGET, &sarg); - *targ = 0; - if (sarg & TIOCM_CTS) - *targ |= CHR_TIOCM_CTS; - if (sarg & TIOCM_CAR) - *targ |= CHR_TIOCM_CAR; - if (sarg & TIOCM_DSR) - *targ |= CHR_TIOCM_DSR; - if (sarg & TIOCM_RI) - *targ |= CHR_TIOCM_RI; - if (sarg & TIOCM_DTR) - *targ |= CHR_TIOCM_DTR; - if (sarg & TIOCM_RTS) - *targ |= CHR_TIOCM_RTS; - } - break; - case CHR_IOCTL_SERIAL_SET_TIOCM: - { - int sarg = *(int *)arg; - int targ = 0; - ioctl(fioc->fd, TIOCMGET, &targ); - targ &= ~(CHR_TIOCM_CTS | CHR_TIOCM_CAR | CHR_TIOCM_DSR - | CHR_TIOCM_RI | CHR_TIOCM_DTR | CHR_TIOCM_RTS); - if (sarg & CHR_TIOCM_CTS) - targ |= TIOCM_CTS; - if (sarg & CHR_TIOCM_CAR) - targ |= TIOCM_CAR; - if (sarg & CHR_TIOCM_DSR) - targ |= TIOCM_DSR; - if (sarg & CHR_TIOCM_RI) - targ |= TIOCM_RI; - if (sarg & CHR_TIOCM_DTR) - targ |= TIOCM_DTR; - if (sarg & CHR_TIOCM_RTS) - targ |= TIOCM_RTS; - ioctl(fioc->fd, TIOCMSET, &targ); - } - break; - default: - return -ENOTSUP; - } - return 0; -} - -static void qemu_chr_close_tty(CharDriverState *chr) -{ - fd_chr_close(chr); -} - -static CharDriverState *qemu_chr_open_tty_fd(int fd, - ChardevCommon *backend, - Error **errp) -{ - CharDriverState *chr; - - tty_serial_init(fd, 115200, 'N', 8, 1); - chr = qemu_chr_open_fd(fd, fd, backend, errp); - chr->chr_ioctl = tty_serial_ioctl; - chr->chr_close = qemu_chr_close_tty; - return chr; -} -#endif /* __linux__ || __sun__ */ - -#if defined(__linux__) - -#define HAVE_CHARDEV_PARPORT 1 - -typedef struct { - int fd; - int mode; -} ParallelCharDriver; - -static int pp_hw_mode(ParallelCharDriver *s, uint16_t mode) -{ - if (s->mode != mode) { - int m = mode; - if (ioctl(s->fd, PPSETMODE, &m) < 0) - return 0; - s->mode = mode; - } - return 1; -} - -static int pp_ioctl(CharDriverState *chr, int cmd, void *arg) -{ - ParallelCharDriver *drv = chr->opaque; - int fd = drv->fd; - uint8_t b; - - switch(cmd) { - case CHR_IOCTL_PP_READ_DATA: - if (ioctl(fd, PPRDATA, &b) < 0) - return -ENOTSUP; - *(uint8_t *)arg = b; - break; - case CHR_IOCTL_PP_WRITE_DATA: - b = *(uint8_t *)arg; - if (ioctl(fd, PPWDATA, &b) < 0) - return -ENOTSUP; - break; - case CHR_IOCTL_PP_READ_CONTROL: - if (ioctl(fd, PPRCONTROL, &b) < 0) - return -ENOTSUP; - /* Linux gives only the lowest bits, and no way to know data - direction! For better compatibility set the fixed upper - bits. */ - *(uint8_t *)arg = b | 0xc0; - break; - case CHR_IOCTL_PP_WRITE_CONTROL: - b = *(uint8_t *)arg; - if (ioctl(fd, PPWCONTROL, &b) < 0) - return -ENOTSUP; - break; - case CHR_IOCTL_PP_READ_STATUS: - if (ioctl(fd, PPRSTATUS, &b) < 0) - return -ENOTSUP; - *(uint8_t *)arg = b; - break; - case CHR_IOCTL_PP_DATA_DIR: - if (ioctl(fd, PPDATADIR, (int *)arg) < 0) - return -ENOTSUP; - break; - case CHR_IOCTL_PP_EPP_READ_ADDR: - if (pp_hw_mode(drv, IEEE1284_MODE_EPP|IEEE1284_ADDR)) { - struct ParallelIOArg *parg = arg; - int n = read(fd, parg->buffer, parg->count); - if (n != parg->count) { - return -EIO; - } - } - break; - case CHR_IOCTL_PP_EPP_READ: - if (pp_hw_mode(drv, IEEE1284_MODE_EPP)) { - struct ParallelIOArg *parg = arg; - int n = read(fd, parg->buffer, parg->count); - if (n != parg->count) { - return -EIO; - } - } - break; - case CHR_IOCTL_PP_EPP_WRITE_ADDR: - if (pp_hw_mode(drv, IEEE1284_MODE_EPP|IEEE1284_ADDR)) { - struct ParallelIOArg *parg = arg; - int n = write(fd, parg->buffer, parg->count); - if (n != parg->count) { - return -EIO; - } - } - break; - case CHR_IOCTL_PP_EPP_WRITE: - if (pp_hw_mode(drv, IEEE1284_MODE_EPP)) { - struct ParallelIOArg *parg = arg; - int n = write(fd, parg->buffer, parg->count); - if (n != parg->count) { - return -EIO; - } - } - break; - default: - return -ENOTSUP; - } - return 0; -} - -static void pp_close(CharDriverState *chr) -{ - ParallelCharDriver *drv = chr->opaque; - int fd = drv->fd; - - pp_hw_mode(drv, IEEE1284_MODE_COMPAT); - ioctl(fd, PPRELEASE); - close(fd); - g_free(drv); - qemu_chr_be_event(chr, CHR_EVENT_CLOSED); -} - -static CharDriverState *qemu_chr_open_pp_fd(int fd, - ChardevCommon *backend, - Error **errp) -{ - CharDriverState *chr; - ParallelCharDriver *drv; - - if (ioctl(fd, PPCLAIM) < 0) { - error_setg_errno(errp, errno, "not a parallel port"); - close(fd); - return NULL; - } - - chr = qemu_chr_alloc(backend, errp); - if (!chr) { - return NULL; - } - - drv = g_new0(ParallelCharDriver, 1); - chr->opaque = drv; - chr->chr_write = null_chr_write; - chr->chr_ioctl = pp_ioctl; - chr->chr_close = pp_close; - - drv->fd = fd; - drv->mode = IEEE1284_MODE_COMPAT; - - return chr; -} -#endif /* __linux__ */ - -#if defined(__FreeBSD__) || defined(__FreeBSD_kernel__) || defined(__DragonFly__) - -#define HAVE_CHARDEV_PARPORT 1 - -static int pp_ioctl(CharDriverState *chr, int cmd, void *arg) -{ - int fd = (int)(intptr_t)chr->opaque; - uint8_t b; - - switch(cmd) { - case CHR_IOCTL_PP_READ_DATA: - if (ioctl(fd, PPIGDATA, &b) < 0) - return -ENOTSUP; - *(uint8_t *)arg = b; - break; - case CHR_IOCTL_PP_WRITE_DATA: - b = *(uint8_t *)arg; - if (ioctl(fd, PPISDATA, &b) < 0) - return -ENOTSUP; - break; - case CHR_IOCTL_PP_READ_CONTROL: - if (ioctl(fd, PPIGCTRL, &b) < 0) - return -ENOTSUP; - *(uint8_t *)arg = b; - break; - case CHR_IOCTL_PP_WRITE_CONTROL: - b = *(uint8_t *)arg; - if (ioctl(fd, PPISCTRL, &b) < 0) - return -ENOTSUP; - break; - case CHR_IOCTL_PP_READ_STATUS: - if (ioctl(fd, PPIGSTATUS, &b) < 0) - return -ENOTSUP; - *(uint8_t *)arg = b; - break; - default: - return -ENOTSUP; - } - return 0; -} - -static CharDriverState *qemu_chr_open_pp_fd(int fd, - ChardevCommon *backend, - Error **errp) -{ - CharDriverState *chr; - - chr = qemu_chr_alloc(backend, errp); - if (!chr) { - return NULL; - } - chr->opaque = (void *)(intptr_t)fd; - chr->chr_write = null_chr_write; - chr->chr_ioctl = pp_ioctl; - chr->explicit_be_open = true; - return chr; -} -#endif - -#else /* _WIN32 */ - -#define HAVE_CHARDEV_SERIAL 1 - -typedef struct { - int max_size; - HANDLE hcom, hrecv, hsend; - OVERLAPPED orecv; - BOOL fpipe; - DWORD len; - - /* Protected by the CharDriverState chr_write_lock. */ - OVERLAPPED osend; -} WinCharState; - -typedef struct { - HANDLE hStdIn; - HANDLE hInputReadyEvent; - HANDLE hInputDoneEvent; - HANDLE hInputThread; - uint8_t win_stdio_buf; -} WinStdioCharState; - -#define NSENDBUF 2048 -#define NRECVBUF 2048 -#define MAXCONNECT 1 -#define NTIMEOUT 5000 - -static int win_chr_poll(void *opaque); -static int win_chr_pipe_poll(void *opaque); - -static void win_chr_close(CharDriverState *chr) -{ - WinCharState *s = chr->opaque; - - if (s->hsend) { - CloseHandle(s->hsend); - s->hsend = NULL; - } - if (s->hrecv) { - CloseHandle(s->hrecv); - s->hrecv = NULL; - } - if (s->hcom) { - CloseHandle(s->hcom); - s->hcom = NULL; - } - if (s->fpipe) - qemu_del_polling_cb(win_chr_pipe_poll, chr); - else - qemu_del_polling_cb(win_chr_poll, chr); - - qemu_chr_be_event(chr, CHR_EVENT_CLOSED); -} - -static int win_chr_init(CharDriverState *chr, const char *filename, Error **errp) -{ - WinCharState *s = chr->opaque; - COMMCONFIG comcfg; - COMMTIMEOUTS cto = { 0, 0, 0, 0, 0}; - COMSTAT comstat; - DWORD size; - DWORD err; - - s->hsend = CreateEvent(NULL, TRUE, FALSE, NULL); - if (!s->hsend) { - error_setg(errp, "Failed CreateEvent"); - goto fail; - } - s->hrecv = CreateEvent(NULL, TRUE, FALSE, NULL); - if (!s->hrecv) { - error_setg(errp, "Failed CreateEvent"); - goto fail; - } - - s->hcom = CreateFile(filename, GENERIC_READ|GENERIC_WRITE, 0, NULL, - OPEN_EXISTING, FILE_FLAG_OVERLAPPED, 0); - if (s->hcom == INVALID_HANDLE_VALUE) { - error_setg(errp, "Failed CreateFile (%lu)", GetLastError()); - s->hcom = NULL; - goto fail; - } - - if (!SetupComm(s->hcom, NRECVBUF, NSENDBUF)) { - error_setg(errp, "Failed SetupComm"); - goto fail; - } - - ZeroMemory(&comcfg, sizeof(COMMCONFIG)); - size = sizeof(COMMCONFIG); - GetDefaultCommConfig(filename, &comcfg, &size); - comcfg.dcb.DCBlength = sizeof(DCB); - CommConfigDialog(filename, NULL, &comcfg); - - if (!SetCommState(s->hcom, &comcfg.dcb)) { - error_setg(errp, "Failed SetCommState"); - goto fail; - } - - if (!SetCommMask(s->hcom, EV_ERR)) { - error_setg(errp, "Failed SetCommMask"); - goto fail; - } - - cto.ReadIntervalTimeout = MAXDWORD; - if (!SetCommTimeouts(s->hcom, &cto)) { - error_setg(errp, "Failed SetCommTimeouts"); - goto fail; - } - - if (!ClearCommError(s->hcom, &err, &comstat)) { - error_setg(errp, "Failed ClearCommError"); - goto fail; - } - qemu_add_polling_cb(win_chr_poll, chr); - return 0; - - fail: - win_chr_close(chr); - return -1; -} - -/* Called with chr_write_lock held. */ -static int win_chr_write(CharDriverState *chr, const uint8_t *buf, int len1) -{ - WinCharState *s = chr->opaque; - DWORD len, ret, size, err; - - len = len1; - ZeroMemory(&s->osend, sizeof(s->osend)); - s->osend.hEvent = s->hsend; - while (len > 0) { - if (s->hsend) - ret = WriteFile(s->hcom, buf, len, &size, &s->osend); - else - ret = WriteFile(s->hcom, buf, len, &size, NULL); - if (!ret) { - err = GetLastError(); - if (err == ERROR_IO_PENDING) { - ret = GetOverlappedResult(s->hcom, &s->osend, &size, TRUE); - if (ret) { - buf += size; - len -= size; - } else { - break; - } - } else { - break; - } - } else { - buf += size; - len -= size; - } - } - return len1 - len; -} - -static int win_chr_read_poll(CharDriverState *chr) -{ - WinCharState *s = chr->opaque; - - s->max_size = qemu_chr_be_can_write(chr); - return s->max_size; -} - -static void win_chr_readfile(CharDriverState *chr) -{ - WinCharState *s = chr->opaque; - int ret, err; - uint8_t buf[READ_BUF_LEN]; - DWORD size; - - ZeroMemory(&s->orecv, sizeof(s->orecv)); - s->orecv.hEvent = s->hrecv; - ret = ReadFile(s->hcom, buf, s->len, &size, &s->orecv); - if (!ret) { - err = GetLastError(); - if (err == ERROR_IO_PENDING) { - ret = GetOverlappedResult(s->hcom, &s->orecv, &size, TRUE); - } - } - - if (size > 0) { - qemu_chr_be_write(chr, buf, size); - } -} - -static void win_chr_read(CharDriverState *chr) -{ - WinCharState *s = chr->opaque; - - if (s->len > s->max_size) - s->len = s->max_size; - if (s->len == 0) - return; - - win_chr_readfile(chr); -} - -static int win_chr_poll(void *opaque) -{ - CharDriverState *chr = opaque; - WinCharState *s = chr->opaque; - COMSTAT status; - DWORD comerr; - - ClearCommError(s->hcom, &comerr, &status); - if (status.cbInQue > 0) { - s->len = status.cbInQue; - win_chr_read_poll(chr); - win_chr_read(chr); - return 1; - } - return 0; -} - -static CharDriverState *qemu_chr_open_win_path(const char *filename, - ChardevCommon *backend, - Error **errp) -{ - CharDriverState *chr; - WinCharState *s; - - chr = qemu_chr_alloc(backend, errp); - if (!chr) { - return NULL; - } - s = g_new0(WinCharState, 1); - chr->opaque = s; - chr->chr_write = win_chr_write; - chr->chr_close = win_chr_close; - - if (win_chr_init(chr, filename, errp) < 0) { - g_free(s); - qemu_chr_free_common(chr); - return NULL; - } - return chr; -} - -static int win_chr_pipe_poll(void *opaque) -{ - CharDriverState *chr = opaque; - WinCharState *s = chr->opaque; - DWORD size; - - PeekNamedPipe(s->hcom, NULL, 0, NULL, &size, NULL); - if (size > 0) { - s->len = size; - win_chr_read_poll(chr); - win_chr_read(chr); - return 1; - } - return 0; -} - -static int win_chr_pipe_init(CharDriverState *chr, const char *filename, - Error **errp) -{ - WinCharState *s = chr->opaque; - OVERLAPPED ov; - int ret; - DWORD size; - char *openname; - - s->fpipe = TRUE; - - s->hsend = CreateEvent(NULL, TRUE, FALSE, NULL); - if (!s->hsend) { - error_setg(errp, "Failed CreateEvent"); - goto fail; - } - s->hrecv = CreateEvent(NULL, TRUE, FALSE, NULL); - if (!s->hrecv) { - error_setg(errp, "Failed CreateEvent"); - goto fail; - } - - openname = g_strdup_printf("\\\\.\\pipe\\%s", filename); - s->hcom = CreateNamedPipe(openname, PIPE_ACCESS_DUPLEX | FILE_FLAG_OVERLAPPED, - PIPE_TYPE_BYTE | PIPE_READMODE_BYTE | - PIPE_WAIT, - MAXCONNECT, NSENDBUF, NRECVBUF, NTIMEOUT, NULL); - g_free(openname); - if (s->hcom == INVALID_HANDLE_VALUE) { - error_setg(errp, "Failed CreateNamedPipe (%lu)", GetLastError()); - s->hcom = NULL; - goto fail; - } - - ZeroMemory(&ov, sizeof(ov)); - ov.hEvent = CreateEvent(NULL, TRUE, FALSE, NULL); - ret = ConnectNamedPipe(s->hcom, &ov); - if (ret) { - error_setg(errp, "Failed ConnectNamedPipe"); - goto fail; - } - - ret = GetOverlappedResult(s->hcom, &ov, &size, TRUE); - if (!ret) { - error_setg(errp, "Failed GetOverlappedResult"); - if (ov.hEvent) { - CloseHandle(ov.hEvent); - ov.hEvent = NULL; - } - goto fail; - } - - if (ov.hEvent) { - CloseHandle(ov.hEvent); - ov.hEvent = NULL; - } - qemu_add_polling_cb(win_chr_pipe_poll, chr); - return 0; - - fail: - win_chr_close(chr); - return -1; -} - - -static CharDriverState *qemu_chr_open_pipe(const char *id, - ChardevBackend *backend, - ChardevReturn *ret, - Error **errp) -{ - ChardevHostdev *opts = backend->u.pipe.data; - const char *filename = opts->device; - CharDriverState *chr; - WinCharState *s; - ChardevCommon *common = qapi_ChardevHostdev_base(opts); - - chr = qemu_chr_alloc(common, errp); - if (!chr) { - return NULL; - } - s = g_new0(WinCharState, 1); - chr->opaque = s; - chr->chr_write = win_chr_write; - chr->chr_close = win_chr_close; - - if (win_chr_pipe_init(chr, filename, errp) < 0) { - g_free(s); - qemu_chr_free_common(chr); - return NULL; - } - return chr; -} - -static CharDriverState *qemu_chr_open_win_file(HANDLE fd_out, - ChardevCommon *backend, - Error **errp) -{ - CharDriverState *chr; - WinCharState *s; - - chr = qemu_chr_alloc(backend, errp); - if (!chr) { - return NULL; - } - s = g_new0(WinCharState, 1); - s->hcom = fd_out; - chr->opaque = s; - chr->chr_write = win_chr_write; - return chr; -} - -static CharDriverState *qemu_chr_open_win_con(const char *id, - ChardevBackend *backend, - ChardevReturn *ret, - Error **errp) -{ - ChardevCommon *common = backend->u.console.data; - return qemu_chr_open_win_file(GetStdHandle(STD_OUTPUT_HANDLE), - common, errp); -} - -static int win_stdio_write(CharDriverState *chr, const uint8_t *buf, int len) -{ - HANDLE hStdOut = GetStdHandle(STD_OUTPUT_HANDLE); - DWORD dwSize; - int len1; - - len1 = len; - - while (len1 > 0) { - if (!WriteFile(hStdOut, buf, len1, &dwSize, NULL)) { - break; - } - buf += dwSize; - len1 -= dwSize; - } - - return len - len1; -} - -static void win_stdio_wait_func(void *opaque) -{ - CharDriverState *chr = opaque; - WinStdioCharState *stdio = chr->opaque; - INPUT_RECORD buf[4]; - int ret; - DWORD dwSize; - int i; - - ret = ReadConsoleInput(stdio->hStdIn, buf, ARRAY_SIZE(buf), &dwSize); - - if (!ret) { - /* Avoid error storm */ - qemu_del_wait_object(stdio->hStdIn, NULL, NULL); - return; - } - - for (i = 0; i < dwSize; i++) { - KEY_EVENT_RECORD *kev = &buf[i].Event.KeyEvent; - - if (buf[i].EventType == KEY_EVENT && kev->bKeyDown) { - int j; - if (kev->uChar.AsciiChar != 0) { - for (j = 0; j < kev->wRepeatCount; j++) { - if (qemu_chr_be_can_write(chr)) { - uint8_t c = kev->uChar.AsciiChar; - qemu_chr_be_write(chr, &c, 1); - } - } - } - } - } -} - -static DWORD WINAPI win_stdio_thread(LPVOID param) -{ - CharDriverState *chr = param; - WinStdioCharState *stdio = chr->opaque; - int ret; - DWORD dwSize; - - while (1) { - - /* Wait for one byte */ - ret = ReadFile(stdio->hStdIn, &stdio->win_stdio_buf, 1, &dwSize, NULL); - - /* Exit in case of error, continue if nothing read */ - if (!ret) { - break; - } - if (!dwSize) { - continue; - } - - /* Some terminal emulator returns \r\n for Enter, just pass \n */ - if (stdio->win_stdio_buf == '\r') { - continue; - } - - /* Signal the main thread and wait until the byte was eaten */ - if (!SetEvent(stdio->hInputReadyEvent)) { - break; - } - if (WaitForSingleObject(stdio->hInputDoneEvent, INFINITE) - != WAIT_OBJECT_0) { - break; - } - } - - qemu_del_wait_object(stdio->hInputReadyEvent, NULL, NULL); - return 0; -} - -static void win_stdio_thread_wait_func(void *opaque) -{ - CharDriverState *chr = opaque; - WinStdioCharState *stdio = chr->opaque; - - if (qemu_chr_be_can_write(chr)) { - qemu_chr_be_write(chr, &stdio->win_stdio_buf, 1); - } - - SetEvent(stdio->hInputDoneEvent); -} - -static void qemu_chr_set_echo_win_stdio(CharDriverState *chr, bool echo) -{ - WinStdioCharState *stdio = chr->opaque; - DWORD dwMode = 0; - - GetConsoleMode(stdio->hStdIn, &dwMode); - - if (echo) { - SetConsoleMode(stdio->hStdIn, dwMode | ENABLE_ECHO_INPUT); - } else { - SetConsoleMode(stdio->hStdIn, dwMode & ~ENABLE_ECHO_INPUT); - } -} - -static void win_stdio_close(CharDriverState *chr) -{ - WinStdioCharState *stdio = chr->opaque; - - if (stdio->hInputReadyEvent != INVALID_HANDLE_VALUE) { - CloseHandle(stdio->hInputReadyEvent); - } - if (stdio->hInputDoneEvent != INVALID_HANDLE_VALUE) { - CloseHandle(stdio->hInputDoneEvent); - } - if (stdio->hInputThread != INVALID_HANDLE_VALUE) { - TerminateThread(stdio->hInputThread, 0); - } - - g_free(chr->opaque); - g_free(chr); -} - -static CharDriverState *qemu_chr_open_stdio(const char *id, - ChardevBackend *backend, - ChardevReturn *ret, - Error **errp) -{ - CharDriverState *chr; - WinStdioCharState *stdio; - DWORD dwMode; - int is_console = 0; - ChardevCommon *common = qapi_ChardevStdio_base(backend->u.stdio.data); - - chr = qemu_chr_alloc(common, errp); - if (!chr) { - return NULL; - } - stdio = g_new0(WinStdioCharState, 1); - - stdio->hStdIn = GetStdHandle(STD_INPUT_HANDLE); - if (stdio->hStdIn == INVALID_HANDLE_VALUE) { - error_setg(errp, "cannot open stdio: invalid handle"); - return NULL; - } - - is_console = GetConsoleMode(stdio->hStdIn, &dwMode) != 0; - - chr->opaque = stdio; - chr->chr_write = win_stdio_write; - chr->chr_close = win_stdio_close; - - if (is_console) { - if (qemu_add_wait_object(stdio->hStdIn, - win_stdio_wait_func, chr)) { - error_setg(errp, "qemu_add_wait_object: failed"); - goto err1; - } - } else { - DWORD dwId; - - stdio->hInputReadyEvent = CreateEvent(NULL, FALSE, FALSE, NULL); - stdio->hInputDoneEvent = CreateEvent(NULL, FALSE, FALSE, NULL); - if (stdio->hInputReadyEvent == INVALID_HANDLE_VALUE - || stdio->hInputDoneEvent == INVALID_HANDLE_VALUE) { - error_setg(errp, "cannot create event"); - goto err2; - } - if (qemu_add_wait_object(stdio->hInputReadyEvent, - win_stdio_thread_wait_func, chr)) { - error_setg(errp, "qemu_add_wait_object: failed"); - goto err2; - } - stdio->hInputThread = CreateThread(NULL, 0, win_stdio_thread, - chr, 0, &dwId); - - if (stdio->hInputThread == INVALID_HANDLE_VALUE) { - error_setg(errp, "cannot create stdio thread"); - goto err3; - } - } - - dwMode |= ENABLE_LINE_INPUT; - - if (is_console) { - /* set the terminal in raw mode */ - /* ENABLE_QUICK_EDIT_MODE | ENABLE_EXTENDED_FLAGS */ - dwMode |= ENABLE_PROCESSED_INPUT; - } - - SetConsoleMode(stdio->hStdIn, dwMode); - - chr->chr_set_echo = qemu_chr_set_echo_win_stdio; - qemu_chr_fe_set_echo(chr, false); - - return chr; - -err3: - qemu_del_wait_object(stdio->hInputReadyEvent, NULL, NULL); -err2: - CloseHandle(stdio->hInputReadyEvent); - CloseHandle(stdio->hInputDoneEvent); -err1: - qemu_del_wait_object(stdio->hStdIn, NULL, NULL); - return NULL; -} -#endif /* !_WIN32 */ - - -/***********************************************************/ -/* UDP Net console */ - -typedef struct { - QIOChannel *ioc; - uint8_t buf[READ_BUF_LEN]; - int bufcnt; - int bufptr; - int max_size; -} NetCharDriver; - -/* Called with chr_write_lock held. */ -static int udp_chr_write(CharDriverState *chr, const uint8_t *buf, int len) -{ - NetCharDriver *s = chr->opaque; - - return qio_channel_write( - s->ioc, (const char *)buf, len, NULL); -} - -static int udp_chr_read_poll(void *opaque) -{ - CharDriverState *chr = opaque; - NetCharDriver *s = chr->opaque; - - s->max_size = qemu_chr_be_can_write(chr); - - /* If there were any stray characters in the queue process them - * first - */ - while (s->max_size > 0 && s->bufptr < s->bufcnt) { - qemu_chr_be_write(chr, &s->buf[s->bufptr], 1); - s->bufptr++; - s->max_size = qemu_chr_be_can_write(chr); - } - return s->max_size; -} - -static gboolean udp_chr_read(QIOChannel *chan, GIOCondition cond, void *opaque) -{ - CharDriverState *chr = opaque; - NetCharDriver *s = chr->opaque; - ssize_t ret; - - if (s->max_size == 0) { - return TRUE; - } - ret = qio_channel_read( - s->ioc, (char *)s->buf, sizeof(s->buf), NULL); - if (ret <= 0) { - remove_fd_in_watch(chr); - return FALSE; - } - s->bufcnt = ret; - - s->bufptr = 0; - while (s->max_size > 0 && s->bufptr < s->bufcnt) { - qemu_chr_be_write(chr, &s->buf[s->bufptr], 1); - s->bufptr++; - s->max_size = qemu_chr_be_can_write(chr); - } - - return TRUE; -} - -static void udp_chr_update_read_handler(CharDriverState *chr) -{ - NetCharDriver *s = chr->opaque; - - remove_fd_in_watch(chr); - if (s->ioc) { - chr->fd_in_tag = io_add_watch_poll(s->ioc, - udp_chr_read_poll, - udp_chr_read, chr); - } -} - -static void udp_chr_close(CharDriverState *chr) -{ - NetCharDriver *s = chr->opaque; - - remove_fd_in_watch(chr); - if (s->ioc) { - object_unref(OBJECT(s->ioc)); - } - g_free(s); - qemu_chr_be_event(chr, CHR_EVENT_CLOSED); -} - -static CharDriverState *qemu_chr_open_udp(QIOChannelSocket *sioc, - ChardevCommon *backend, - Error **errp) -{ - CharDriverState *chr = NULL; - NetCharDriver *s = NULL; - - chr = qemu_chr_alloc(backend, errp); - if (!chr) { - return NULL; - } - s = g_new0(NetCharDriver, 1); - - s->ioc = QIO_CHANNEL(sioc); - s->bufcnt = 0; - s->bufptr = 0; - chr->opaque = s; - chr->chr_write = udp_chr_write; - chr->chr_update_read_handler = udp_chr_update_read_handler; - chr->chr_close = udp_chr_close; - /* be isn't opened until we get a connection */ - chr->explicit_be_open = true; - return chr; -} - -/***********************************************************/ -/* TCP Net console */ - -typedef struct { - QIOChannel *ioc; /* Client I/O channel */ - QIOChannelSocket *sioc; /* Client master channel */ - QIOChannelSocket *listen_ioc; - guint listen_tag; - QCryptoTLSCreds *tls_creds; - int connected; - int max_size; - int do_telnetopt; - int do_nodelay; - int is_unix; - int *read_msgfds; - size_t read_msgfds_num; - int *write_msgfds; - size_t write_msgfds_num; - - SocketAddress *addr; - bool is_listen; - bool is_telnet; - - guint reconnect_timer; - int64_t reconnect_time; - bool connect_err_reported; -} TCPCharDriver; - -static gboolean socket_reconnect_timeout(gpointer opaque); - -static void qemu_chr_socket_restart_timer(CharDriverState *chr) -{ - TCPCharDriver *s = chr->opaque; - assert(s->connected == 0); - s->reconnect_timer = g_timeout_add_seconds(s->reconnect_time, - socket_reconnect_timeout, chr); -} - -static void check_report_connect_error(CharDriverState *chr, - Error *err) -{ - TCPCharDriver *s = chr->opaque; - - if (!s->connect_err_reported) { - error_report("Unable to connect character device %s: %s", - chr->label, error_get_pretty(err)); - s->connect_err_reported = true; - } - qemu_chr_socket_restart_timer(chr); -} - -static gboolean tcp_chr_accept(QIOChannel *chan, - GIOCondition cond, - void *opaque); - -/* Called with chr_write_lock held. */ -static int tcp_chr_write(CharDriverState *chr, const uint8_t *buf, int len) -{ - TCPCharDriver *s = chr->opaque; - if (s->connected) { - int ret = io_channel_send_full(s->ioc, buf, len, - s->write_msgfds, - s->write_msgfds_num); - - /* free the written msgfds, no matter what */ - if (s->write_msgfds_num) { - g_free(s->write_msgfds); - s->write_msgfds = 0; - s->write_msgfds_num = 0; - } - - return ret; - } else { - /* XXX: indicate an error ? */ - return len; - } -} - -static int tcp_chr_read_poll(void *opaque) -{ - CharDriverState *chr = opaque; - TCPCharDriver *s = chr->opaque; - if (!s->connected) - return 0; - s->max_size = qemu_chr_be_can_write(chr); - return s->max_size; -} - -#define IAC 255 -#define IAC_BREAK 243 -static void tcp_chr_process_IAC_bytes(CharDriverState *chr, - TCPCharDriver *s, - uint8_t *buf, int *size) -{ - /* Handle any telnet client's basic IAC options to satisfy char by - * char mode with no echo. All IAC options will be removed from - * the buf and the do_telnetopt variable will be used to track the - * state of the width of the IAC information. - * - * IAC commands come in sets of 3 bytes with the exception of the - * "IAC BREAK" command and the double IAC. - */ - - int i; - int j = 0; - - for (i = 0; i < *size; i++) { - if (s->do_telnetopt > 1) { - if ((unsigned char)buf[i] == IAC && s->do_telnetopt == 2) { - /* Double IAC means send an IAC */ - if (j != i) - buf[j] = buf[i]; - j++; - s->do_telnetopt = 1; - } else { - if ((unsigned char)buf[i] == IAC_BREAK && s->do_telnetopt == 2) { - /* Handle IAC break commands by sending a serial break */ - qemu_chr_be_event(chr, CHR_EVENT_BREAK); - s->do_telnetopt++; - } - s->do_telnetopt++; - } - if (s->do_telnetopt >= 4) { - s->do_telnetopt = 1; - } - } else { - if ((unsigned char)buf[i] == IAC) { - s->do_telnetopt = 2; - } else { - if (j != i) - buf[j] = buf[i]; - j++; - } - } - } - *size = j; -} - -static int tcp_get_msgfds(CharDriverState *chr, int *fds, int num) -{ - TCPCharDriver *s = chr->opaque; - int to_copy = (s->read_msgfds_num < num) ? s->read_msgfds_num : num; - - assert(num <= TCP_MAX_FDS); - - if (to_copy) { - int i; - - memcpy(fds, s->read_msgfds, to_copy * sizeof(int)); - - /* Close unused fds */ - for (i = to_copy; i < s->read_msgfds_num; i++) { - close(s->read_msgfds[i]); - } - - g_free(s->read_msgfds); - s->read_msgfds = 0; - s->read_msgfds_num = 0; - } - - return to_copy; -} - -static int tcp_set_msgfds(CharDriverState *chr, int *fds, int num) -{ - TCPCharDriver *s = chr->opaque; - - if (!qio_channel_has_feature(s->ioc, - QIO_CHANNEL_FEATURE_FD_PASS)) { - return -1; - } - /* clear old pending fd array */ - g_free(s->write_msgfds); - s->write_msgfds = NULL; - - if (num) { - s->write_msgfds = g_new(int, num); - memcpy(s->write_msgfds, fds, num * sizeof(int)); - } - - s->write_msgfds_num = num; - - return 0; -} - -static ssize_t tcp_chr_recv(CharDriverState *chr, char *buf, size_t len) -{ - TCPCharDriver *s = chr->opaque; - struct iovec iov = { .iov_base = buf, .iov_len = len }; - int ret; - size_t i; - int *msgfds = NULL; - size_t msgfds_num = 0; - - if (qio_channel_has_feature(s->ioc, QIO_CHANNEL_FEATURE_FD_PASS)) { - ret = qio_channel_readv_full(s->ioc, &iov, 1, - &msgfds, &msgfds_num, - NULL); - } else { - ret = qio_channel_readv_full(s->ioc, &iov, 1, - NULL, NULL, - NULL); - } - - if (ret == QIO_CHANNEL_ERR_BLOCK) { - errno = EAGAIN; - ret = -1; - } else if (ret == -1) { - errno = EIO; - } - - if (msgfds_num) { - /* close and clean read_msgfds */ - for (i = 0; i < s->read_msgfds_num; i++) { - close(s->read_msgfds[i]); - } - - if (s->read_msgfds_num) { - g_free(s->read_msgfds); - } - - s->read_msgfds = msgfds; - s->read_msgfds_num = msgfds_num; - } - - for (i = 0; i < s->read_msgfds_num; i++) { - int fd = s->read_msgfds[i]; - if (fd < 0) { - continue; - } - - /* O_NONBLOCK is preserved across SCM_RIGHTS so reset it */ - qemu_set_block(fd); - -#ifndef MSG_CMSG_CLOEXEC - qemu_set_cloexec(fd); -#endif - } - - return ret; -} - -static GSource *tcp_chr_add_watch(CharDriverState *chr, GIOCondition cond) -{ - TCPCharDriver *s = chr->opaque; - return qio_channel_create_watch(s->ioc, cond); -} - -static void tcp_chr_disconnect(CharDriverState *chr) -{ - TCPCharDriver *s = chr->opaque; - - if (!s->connected) { - return; - } - - s->connected = 0; - if (s->listen_ioc) { - s->listen_tag = qio_channel_add_watch( - QIO_CHANNEL(s->listen_ioc), G_IO_IN, tcp_chr_accept, chr, NULL); - } - tcp_set_msgfds(chr, NULL, 0); - remove_fd_in_watch(chr); - object_unref(OBJECT(s->sioc)); - s->sioc = NULL; - object_unref(OBJECT(s->ioc)); - s->ioc = NULL; - g_free(chr->filename); - chr->filename = SocketAddress_to_str("disconnected:", s->addr, - s->is_listen, s->is_telnet); - qemu_chr_be_event(chr, CHR_EVENT_CLOSED); - if (s->reconnect_time) { - qemu_chr_socket_restart_timer(chr); - } -} - -static gboolean tcp_chr_read(QIOChannel *chan, GIOCondition cond, void *opaque) -{ - CharDriverState *chr = opaque; - TCPCharDriver *s = chr->opaque; - uint8_t buf[READ_BUF_LEN]; - int len, size; - - if (!s->connected || s->max_size <= 0) { - return TRUE; - } - len = sizeof(buf); - if (len > s->max_size) - len = s->max_size; - size = tcp_chr_recv(chr, (void *)buf, len); - if (size == 0 || size == -1) { - /* connection closed */ - tcp_chr_disconnect(chr); - } else if (size > 0) { - if (s->do_telnetopt) - tcp_chr_process_IAC_bytes(chr, s, buf, &size); - if (size > 0) - qemu_chr_be_write(chr, buf, size); - } - - return TRUE; -} - -static int tcp_chr_sync_read(CharDriverState *chr, const uint8_t *buf, int len) -{ - TCPCharDriver *s = chr->opaque; - int size; - - if (!s->connected) { - return 0; - } - - size = tcp_chr_recv(chr, (void *) buf, len); - if (size == 0) { - /* connection closed */ - tcp_chr_disconnect(chr); - } - - return size; -} - -static void tcp_chr_connect(void *opaque) -{ - CharDriverState *chr = opaque; - TCPCharDriver *s = chr->opaque; - - g_free(chr->filename); - chr->filename = sockaddr_to_str( - &s->sioc->localAddr, s->sioc->localAddrLen, - &s->sioc->remoteAddr, s->sioc->remoteAddrLen, - s->is_listen, s->is_telnet); - - s->connected = 1; - if (s->ioc) { - chr->fd_in_tag = io_add_watch_poll(s->ioc, - tcp_chr_read_poll, - tcp_chr_read, chr); - } - qemu_chr_be_generic_open(chr); -} - -static void tcp_chr_update_read_handler(CharDriverState *chr) -{ - TCPCharDriver *s = chr->opaque; - - if (!s->connected) { - return; - } - - remove_fd_in_watch(chr); - if (s->ioc) { - chr->fd_in_tag = io_add_watch_poll(s->ioc, - tcp_chr_read_poll, - tcp_chr_read, chr); - } -} - -typedef struct { - CharDriverState *chr; - char buf[12]; - size_t buflen; -} TCPCharDriverTelnetInit; - -static gboolean tcp_chr_telnet_init_io(QIOChannel *ioc, - GIOCondition cond G_GNUC_UNUSED, - gpointer user_data) -{ - TCPCharDriverTelnetInit *init = user_data; - ssize_t ret; - - ret = qio_channel_write(ioc, init->buf, init->buflen, NULL); - if (ret < 0) { - if (ret == QIO_CHANNEL_ERR_BLOCK) { - ret = 0; - } else { - tcp_chr_disconnect(init->chr); - return FALSE; - } - } - init->buflen -= ret; - - if (init->buflen == 0) { - tcp_chr_connect(init->chr); - return FALSE; - } - - memmove(init->buf, init->buf + ret, init->buflen); - - return TRUE; -} - -static void tcp_chr_telnet_init(CharDriverState *chr) -{ - TCPCharDriver *s = chr->opaque; - TCPCharDriverTelnetInit *init = - g_new0(TCPCharDriverTelnetInit, 1); - size_t n = 0; - - init->chr = chr; - init->buflen = 12; - -#define IACSET(x, a, b, c) \ - do { \ - x[n++] = a; \ - x[n++] = b; \ - x[n++] = c; \ - } while (0) - - /* Prep the telnet negotion to put telnet in binary, - * no echo, single char mode */ - IACSET(init->buf, 0xff, 0xfb, 0x01); /* IAC WILL ECHO */ - IACSET(init->buf, 0xff, 0xfb, 0x03); /* IAC WILL Suppress go ahead */ - IACSET(init->buf, 0xff, 0xfb, 0x00); /* IAC WILL Binary */ - IACSET(init->buf, 0xff, 0xfd, 0x00); /* IAC DO Binary */ - -#undef IACSET - - qio_channel_add_watch( - s->ioc, G_IO_OUT, - tcp_chr_telnet_init_io, - init, NULL); -} - - -static void tcp_chr_tls_handshake(Object *source, - Error *err, - gpointer user_data) -{ - CharDriverState *chr = user_data; - TCPCharDriver *s = chr->opaque; - - if (err) { - tcp_chr_disconnect(chr); - } else { - if (s->do_telnetopt) { - tcp_chr_telnet_init(chr); - } else { - tcp_chr_connect(chr); - } - } -} - - -static void tcp_chr_tls_init(CharDriverState *chr) -{ - TCPCharDriver *s = chr->opaque; - QIOChannelTLS *tioc; - Error *err = NULL; - - if (s->is_listen) { - tioc = qio_channel_tls_new_server( - s->ioc, s->tls_creds, - NULL, /* XXX Use an ACL */ - &err); - } else { - tioc = qio_channel_tls_new_client( - s->ioc, s->tls_creds, - s->addr->u.inet.data->host, - &err); - } - if (tioc == NULL) { - error_free(err); - tcp_chr_disconnect(chr); - } - object_unref(OBJECT(s->ioc)); - s->ioc = QIO_CHANNEL(tioc); - - qio_channel_tls_handshake(tioc, - tcp_chr_tls_handshake, - chr, - NULL); -} - - -static int tcp_chr_new_client(CharDriverState *chr, QIOChannelSocket *sioc) -{ - TCPCharDriver *s = chr->opaque; - if (s->ioc != NULL) { - return -1; - } - - s->ioc = QIO_CHANNEL(sioc); - object_ref(OBJECT(sioc)); - s->sioc = sioc; - object_ref(OBJECT(sioc)); - - qio_channel_set_blocking(s->ioc, false, NULL); - - if (s->do_nodelay) { - qio_channel_set_delay(s->ioc, false); - } - if (s->listen_tag) { - g_source_remove(s->listen_tag); - s->listen_tag = 0; - } - - if (s->tls_creds) { - tcp_chr_tls_init(chr); - } else { - if (s->do_telnetopt) { - tcp_chr_telnet_init(chr); - } else { - tcp_chr_connect(chr); - } - } - - return 0; -} - - -static int tcp_chr_add_client(CharDriverState *chr, int fd) -{ - int ret; - QIOChannelSocket *sioc; - - sioc = qio_channel_socket_new_fd(fd, NULL); - if (!sioc) { - return -1; - } - ret = tcp_chr_new_client(chr, sioc); - object_unref(OBJECT(sioc)); - return ret; -} - -static gboolean tcp_chr_accept(QIOChannel *channel, - GIOCondition cond, - void *opaque) -{ - CharDriverState *chr = opaque; - QIOChannelSocket *sioc; - - sioc = qio_channel_socket_accept(QIO_CHANNEL_SOCKET(channel), - NULL); - if (!sioc) { - return TRUE; - } - - tcp_chr_new_client(chr, sioc); - - object_unref(OBJECT(sioc)); - - return TRUE; -} - -static void tcp_chr_close(CharDriverState *chr) -{ - TCPCharDriver *s = chr->opaque; - int i; - - if (s->reconnect_timer) { - g_source_remove(s->reconnect_timer); - s->reconnect_timer = 0; - } - qapi_free_SocketAddress(s->addr); - remove_fd_in_watch(chr); - if (s->ioc) { - object_unref(OBJECT(s->ioc)); - } - if (s->listen_tag) { - g_source_remove(s->listen_tag); - s->listen_tag = 0; - } - if (s->listen_ioc) { - object_unref(OBJECT(s->listen_ioc)); - } - if (s->read_msgfds_num) { - for (i = 0; i < s->read_msgfds_num; i++) { - close(s->read_msgfds[i]); - } - g_free(s->read_msgfds); - } - if (s->tls_creds) { - object_unref(OBJECT(s->tls_creds)); - } - if (s->write_msgfds_num) { - g_free(s->write_msgfds); - } - g_free(s); - qemu_chr_be_event(chr, CHR_EVENT_CLOSED); -} - - -static void qemu_chr_socket_connected(Object *src, Error *err, void *opaque) -{ - QIOChannelSocket *sioc = QIO_CHANNEL_SOCKET(src); - CharDriverState *chr = opaque; - TCPCharDriver *s = chr->opaque; - - if (err) { - check_report_connect_error(chr, err); - object_unref(src); - return; - } - - s->connect_err_reported = false; - tcp_chr_new_client(chr, sioc); - object_unref(OBJECT(sioc)); -} - - -/*********************************************************/ -/* Ring buffer chardev */ - -typedef struct { - size_t size; - size_t prod; - size_t cons; - uint8_t *cbuf; -} RingBufCharDriver; - -static size_t ringbuf_count(const CharDriverState *chr) -{ - const RingBufCharDriver *d = chr->opaque; - - return d->prod - d->cons; -} - -/* Called with chr_write_lock held. */ -static int ringbuf_chr_write(CharDriverState *chr, const uint8_t *buf, int len) -{ - RingBufCharDriver *d = chr->opaque; - int i; - - if (!buf || (len < 0)) { - return -1; - } - - for (i = 0; i < len; i++ ) { - d->cbuf[d->prod++ & (d->size - 1)] = buf[i]; - if (d->prod - d->cons > d->size) { - d->cons = d->prod - d->size; - } - } - - return 0; -} - -static int ringbuf_chr_read(CharDriverState *chr, uint8_t *buf, int len) -{ - RingBufCharDriver *d = chr->opaque; - int i; - - qemu_mutex_lock(&chr->chr_write_lock); - for (i = 0; i < len && d->cons != d->prod; i++) { - buf[i] = d->cbuf[d->cons++ & (d->size - 1)]; - } - qemu_mutex_unlock(&chr->chr_write_lock); - - return i; -} - -static void ringbuf_chr_close(struct CharDriverState *chr) -{ - RingBufCharDriver *d = chr->opaque; - - g_free(d->cbuf); - g_free(d); - chr->opaque = NULL; -} - -static CharDriverState *qemu_chr_open_ringbuf(const char *id, - ChardevBackend *backend, - ChardevReturn *ret, - Error **errp) -{ - ChardevRingbuf *opts = backend->u.ringbuf.data; - ChardevCommon *common = qapi_ChardevRingbuf_base(opts); - CharDriverState *chr; - RingBufCharDriver *d; - - chr = qemu_chr_alloc(common, errp); - if (!chr) { - return NULL; - } - d = g_malloc(sizeof(*d)); - - d->size = opts->has_size ? opts->size : 65536; - - /* The size must be power of 2 */ - if (d->size & (d->size - 1)) { - error_setg(errp, "size of ringbuf chardev must be power of two"); - goto fail; - } - - d->prod = 0; - d->cons = 0; - d->cbuf = g_malloc0(d->size); - - chr->opaque = d; - chr->chr_write = ringbuf_chr_write; - chr->chr_close = ringbuf_chr_close; - - return chr; - -fail: - g_free(d); - qemu_chr_free_common(chr); - return NULL; -} - -bool chr_is_ringbuf(const CharDriverState *chr) -{ - return chr->chr_write == ringbuf_chr_write; -} - -void qmp_ringbuf_write(const char *device, const char *data, - bool has_format, enum DataFormat format, - Error **errp) -{ - CharDriverState *chr; - const uint8_t *write_data; - int ret; - gsize write_count; - - chr = qemu_chr_find(device); - if (!chr) { - error_setg(errp, "Device '%s' not found", device); - return; - } - - if (!chr_is_ringbuf(chr)) { - error_setg(errp,"%s is not a ringbuf device", device); - return; - } - - if (has_format && (format == DATA_FORMAT_BASE64)) { - write_data = qbase64_decode(data, -1, - &write_count, - errp); - if (!write_data) { - return; - } - } else { - write_data = (uint8_t *)data; - write_count = strlen(data); - } - - ret = ringbuf_chr_write(chr, write_data, write_count); - - if (write_data != (uint8_t *)data) { - g_free((void *)write_data); - } - - if (ret < 0) { - error_setg(errp, "Failed to write to device %s", device); - return; - } -} - -char *qmp_ringbuf_read(const char *device, int64_t size, - bool has_format, enum DataFormat format, - Error **errp) -{ - CharDriverState *chr; - uint8_t *read_data; - size_t count; - char *data; - - chr = qemu_chr_find(device); - if (!chr) { - error_setg(errp, "Device '%s' not found", device); - return NULL; - } - - if (!chr_is_ringbuf(chr)) { - error_setg(errp,"%s is not a ringbuf device", device); - return NULL; - } - - if (size <= 0) { - error_setg(errp, "size must be greater than zero"); - return NULL; - } - - count = ringbuf_count(chr); - size = size > count ? count : size; - read_data = g_malloc(size + 1); - - ringbuf_chr_read(chr, read_data, size); - - if (has_format && (format == DATA_FORMAT_BASE64)) { - data = g_base64_encode(read_data, size); - g_free(read_data); - } else { - /* - * FIXME should read only complete, valid UTF-8 characters up - * to @size bytes. Invalid sequences should be replaced by a - * suitable replacement character. Except when (and only - * when) ring buffer lost characters since last read, initial - * continuation characters should be dropped. - */ - read_data[size] = 0; - data = (char *)read_data; - } - - return data; -} - -QemuOpts *qemu_chr_parse_compat(const char *label, const char *filename) -{ - char host[65], port[33], width[8], height[8]; - int pos; - const char *p; - QemuOpts *opts; - Error *local_err = NULL; - - opts = qemu_opts_create(qemu_find_opts("chardev"), label, 1, &local_err); - if (local_err) { - error_report_err(local_err); - return NULL; - } - - if (strstart(filename, "mon:", &p)) { - filename = p; - qemu_opt_set(opts, "mux", "on", &error_abort); - if (strcmp(filename, "stdio") == 0) { - /* Monitor is muxed to stdio: do not exit on Ctrl+C by default - * but pass it to the guest. Handle this only for compat syntax, - * for -chardev syntax we have special option for this. - * This is what -nographic did, redirecting+muxing serial+monitor - * to stdio causing Ctrl+C to be passed to guest. */ - qemu_opt_set(opts, "signal", "off", &error_abort); - } - } - - if (strcmp(filename, "null") == 0 || - strcmp(filename, "pty") == 0 || - strcmp(filename, "msmouse") == 0 || - strcmp(filename, "braille") == 0 || - strcmp(filename, "testdev") == 0 || - strcmp(filename, "stdio") == 0) { - qemu_opt_set(opts, "backend", filename, &error_abort); - return opts; - } - if (strstart(filename, "vc", &p)) { - qemu_opt_set(opts, "backend", "vc", &error_abort); - if (*p == ':') { - if (sscanf(p+1, "%7[0-9]x%7[0-9]", width, height) == 2) { - /* pixels */ - qemu_opt_set(opts, "width", width, &error_abort); - qemu_opt_set(opts, "height", height, &error_abort); - } else if (sscanf(p+1, "%7[0-9]Cx%7[0-9]C", width, height) == 2) { - /* chars */ - qemu_opt_set(opts, "cols", width, &error_abort); - qemu_opt_set(opts, "rows", height, &error_abort); - } else { - goto fail; - } - } - return opts; - } - if (strcmp(filename, "con:") == 0) { - qemu_opt_set(opts, "backend", "console", &error_abort); - return opts; - } - if (strstart(filename, "COM", NULL)) { - qemu_opt_set(opts, "backend", "serial", &error_abort); - qemu_opt_set(opts, "path", filename, &error_abort); - return opts; - } - if (strstart(filename, "file:", &p)) { - qemu_opt_set(opts, "backend", "file", &error_abort); - qemu_opt_set(opts, "path", p, &error_abort); - return opts; - } - if (strstart(filename, "pipe:", &p)) { - qemu_opt_set(opts, "backend", "pipe", &error_abort); - qemu_opt_set(opts, "path", p, &error_abort); - return opts; - } - if (strstart(filename, "tcp:", &p) || - strstart(filename, "telnet:", &p)) { - if (sscanf(p, "%64[^:]:%32[^,]%n", host, port, &pos) < 2) { - host[0] = 0; - if (sscanf(p, ":%32[^,]%n", port, &pos) < 1) - goto fail; - } - qemu_opt_set(opts, "backend", "socket", &error_abort); - qemu_opt_set(opts, "host", host, &error_abort); - qemu_opt_set(opts, "port", port, &error_abort); - if (p[pos] == ',') { - qemu_opts_do_parse(opts, p+pos+1, NULL, &local_err); - if (local_err) { - error_report_err(local_err); - goto fail; - } - } - if (strstart(filename, "telnet:", &p)) - qemu_opt_set(opts, "telnet", "on", &error_abort); - return opts; - } - if (strstart(filename, "udp:", &p)) { - qemu_opt_set(opts, "backend", "udp", &error_abort); - if (sscanf(p, "%64[^:]:%32[^@,]%n", host, port, &pos) < 2) { - host[0] = 0; - if (sscanf(p, ":%32[^@,]%n", port, &pos) < 1) { - goto fail; - } - } - qemu_opt_set(opts, "host", host, &error_abort); - qemu_opt_set(opts, "port", port, &error_abort); - if (p[pos] == '@') { - p += pos + 1; - if (sscanf(p, "%64[^:]:%32[^,]%n", host, port, &pos) < 2) { - host[0] = 0; - if (sscanf(p, ":%32[^,]%n", port, &pos) < 1) { - goto fail; - } - } - qemu_opt_set(opts, "localaddr", host, &error_abort); - qemu_opt_set(opts, "localport", port, &error_abort); - } - return opts; - } - if (strstart(filename, "unix:", &p)) { - qemu_opt_set(opts, "backend", "socket", &error_abort); - qemu_opts_do_parse(opts, p, "path", &local_err); - if (local_err) { - error_report_err(local_err); - goto fail; - } - return opts; - } - if (strstart(filename, "/dev/parport", NULL) || - strstart(filename, "/dev/ppi", NULL)) { - qemu_opt_set(opts, "backend", "parport", &error_abort); - qemu_opt_set(opts, "path", filename, &error_abort); - return opts; - } - if (strstart(filename, "/dev/", NULL)) { - qemu_opt_set(opts, "backend", "tty", &error_abort); - qemu_opt_set(opts, "path", filename, &error_abort); - return opts; - } - -fail: - qemu_opts_del(opts); - return NULL; -} - -void qemu_chr_parse_common(QemuOpts *opts, ChardevCommon *backend) -{ - const char *logfile = qemu_opt_get(opts, "logfile"); - - backend->has_logfile = logfile != NULL; - backend->logfile = logfile ? g_strdup(logfile) : NULL; - - backend->has_logappend = true; - backend->logappend = qemu_opt_get_bool(opts, "logappend", false); -} - - -static void qemu_chr_parse_file_out(QemuOpts *opts, ChardevBackend *backend, - Error **errp) -{ - const char *path = qemu_opt_get(opts, "path"); - ChardevFile *file; - - if (path == NULL) { - error_setg(errp, "chardev: file: no filename given"); - return; - } - file = backend->u.file.data = g_new0(ChardevFile, 1); - qemu_chr_parse_common(opts, qapi_ChardevFile_base(file)); - file->out = g_strdup(path); - - file->has_append = true; - file->append = qemu_opt_get_bool(opts, "append", false); -} - -static void qemu_chr_parse_stdio(QemuOpts *opts, ChardevBackend *backend, - Error **errp) -{ - ChardevStdio *stdio; - - stdio = backend->u.stdio.data = g_new0(ChardevStdio, 1); - qemu_chr_parse_common(opts, qapi_ChardevStdio_base(stdio)); - stdio->has_signal = true; - stdio->signal = qemu_opt_get_bool(opts, "signal", true); -} - -#ifdef HAVE_CHARDEV_SERIAL -static void qemu_chr_parse_serial(QemuOpts *opts, ChardevBackend *backend, - Error **errp) -{ - const char *device = qemu_opt_get(opts, "path"); - ChardevHostdev *serial; - - if (device == NULL) { - error_setg(errp, "chardev: serial/tty: no device path given"); - return; - } - serial = backend->u.serial.data = g_new0(ChardevHostdev, 1); - qemu_chr_parse_common(opts, qapi_ChardevHostdev_base(serial)); - serial->device = g_strdup(device); -} -#endif - -#ifdef HAVE_CHARDEV_PARPORT -static void qemu_chr_parse_parallel(QemuOpts *opts, ChardevBackend *backend, - Error **errp) -{ - const char *device = qemu_opt_get(opts, "path"); - ChardevHostdev *parallel; - - if (device == NULL) { - error_setg(errp, "chardev: parallel: no device path given"); - return; - } - parallel = backend->u.parallel.data = g_new0(ChardevHostdev, 1); - qemu_chr_parse_common(opts, qapi_ChardevHostdev_base(parallel)); - parallel->device = g_strdup(device); -} -#endif - -static void qemu_chr_parse_pipe(QemuOpts *opts, ChardevBackend *backend, - Error **errp) -{ - const char *device = qemu_opt_get(opts, "path"); - ChardevHostdev *dev; - - if (device == NULL) { - error_setg(errp, "chardev: pipe: no device path given"); - return; - } - dev = backend->u.pipe.data = g_new0(ChardevHostdev, 1); - qemu_chr_parse_common(opts, qapi_ChardevHostdev_base(dev)); - dev->device = g_strdup(device); -} - -static void qemu_chr_parse_ringbuf(QemuOpts *opts, ChardevBackend *backend, - Error **errp) -{ - int val; - ChardevRingbuf *ringbuf; - - ringbuf = backend->u.ringbuf.data = g_new0(ChardevRingbuf, 1); - qemu_chr_parse_common(opts, qapi_ChardevRingbuf_base(ringbuf)); - - val = qemu_opt_get_size(opts, "size", 0); - if (val != 0) { - ringbuf->has_size = true; - ringbuf->size = val; - } -} - -static void qemu_chr_parse_mux(QemuOpts *opts, ChardevBackend *backend, - Error **errp) -{ - const char *chardev = qemu_opt_get(opts, "chardev"); - ChardevMux *mux; - - if (chardev == NULL) { - error_setg(errp, "chardev: mux: no chardev given"); - return; - } - mux = backend->u.mux.data = g_new0(ChardevMux, 1); - qemu_chr_parse_common(opts, qapi_ChardevMux_base(mux)); - mux->chardev = g_strdup(chardev); -} - -static void qemu_chr_parse_socket(QemuOpts *opts, ChardevBackend *backend, - Error **errp) -{ - bool is_listen = qemu_opt_get_bool(opts, "server", false); - bool is_waitconnect = is_listen && qemu_opt_get_bool(opts, "wait", true); - bool is_telnet = qemu_opt_get_bool(opts, "telnet", false); - bool do_nodelay = !qemu_opt_get_bool(opts, "delay", true); - int64_t reconnect = qemu_opt_get_number(opts, "reconnect", 0); - const char *path = qemu_opt_get(opts, "path"); - const char *host = qemu_opt_get(opts, "host"); - const char *port = qemu_opt_get(opts, "port"); - const char *tls_creds = qemu_opt_get(opts, "tls-creds"); - SocketAddress *addr; - ChardevSocket *sock; - - if (!path) { - if (!host) { - error_setg(errp, "chardev: socket: no host given"); - return; - } - if (!port) { - error_setg(errp, "chardev: socket: no port given"); - return; - } - } else { - if (tls_creds) { - error_setg(errp, "TLS can only be used over TCP socket"); - return; - } - } - - sock = backend->u.socket.data = g_new0(ChardevSocket, 1); - qemu_chr_parse_common(opts, qapi_ChardevSocket_base(sock)); - - sock->has_nodelay = true; - sock->nodelay = do_nodelay; - sock->has_server = true; - sock->server = is_listen; - sock->has_telnet = true; - sock->telnet = is_telnet; - sock->has_wait = true; - sock->wait = is_waitconnect; - sock->has_reconnect = true; - sock->reconnect = reconnect; - sock->tls_creds = g_strdup(tls_creds); - - addr = g_new0(SocketAddress, 1); - if (path) { - UnixSocketAddress *q_unix; - addr->type = SOCKET_ADDRESS_KIND_UNIX; - q_unix = addr->u.q_unix.data = g_new0(UnixSocketAddress, 1); - q_unix->path = g_strdup(path); - } else { - addr->type = SOCKET_ADDRESS_KIND_INET; - addr->u.inet.data = g_new(InetSocketAddress, 1); - *addr->u.inet.data = (InetSocketAddress) { - .host = g_strdup(host), - .port = g_strdup(port), - .has_to = qemu_opt_get(opts, "to"), - .to = qemu_opt_get_number(opts, "to", 0), - .has_ipv4 = qemu_opt_get(opts, "ipv4"), - .ipv4 = qemu_opt_get_bool(opts, "ipv4", 0), - .has_ipv6 = qemu_opt_get(opts, "ipv6"), - .ipv6 = qemu_opt_get_bool(opts, "ipv6", 0), - }; - } - sock->addr = addr; -} - -static void qemu_chr_parse_udp(QemuOpts *opts, ChardevBackend *backend, - Error **errp) -{ - const char *host = qemu_opt_get(opts, "host"); - const char *port = qemu_opt_get(opts, "port"); - const char *localaddr = qemu_opt_get(opts, "localaddr"); - const char *localport = qemu_opt_get(opts, "localport"); - bool has_local = false; - SocketAddress *addr; - ChardevUdp *udp; - - if (host == NULL || strlen(host) == 0) { - host = "localhost"; - } - if (port == NULL || strlen(port) == 0) { - error_setg(errp, "chardev: udp: remote port not specified"); - return; - } - if (localport == NULL || strlen(localport) == 0) { - localport = "0"; - } else { - has_local = true; - } - if (localaddr == NULL || strlen(localaddr) == 0) { - localaddr = ""; - } else { - has_local = true; - } - - udp = backend->u.udp.data = g_new0(ChardevUdp, 1); - qemu_chr_parse_common(opts, qapi_ChardevUdp_base(udp)); - - addr = g_new0(SocketAddress, 1); - addr->type = SOCKET_ADDRESS_KIND_INET; - addr->u.inet.data = g_new(InetSocketAddress, 1); - *addr->u.inet.data = (InetSocketAddress) { - .host = g_strdup(host), - .port = g_strdup(port), - .has_ipv4 = qemu_opt_get(opts, "ipv4"), - .ipv4 = qemu_opt_get_bool(opts, "ipv4", 0), - .has_ipv6 = qemu_opt_get(opts, "ipv6"), - .ipv6 = qemu_opt_get_bool(opts, "ipv6", 0), - }; - udp->remote = addr; - - if (has_local) { - udp->has_local = true; - addr = g_new0(SocketAddress, 1); - addr->type = SOCKET_ADDRESS_KIND_INET; - addr->u.inet.data = g_new(InetSocketAddress, 1); - *addr->u.inet.data = (InetSocketAddress) { - .host = g_strdup(localaddr), - .port = g_strdup(localport), - }; - udp->local = addr; - } -} - -typedef struct CharDriver { - const char *name; - ChardevBackendKind kind; - void (*parse)(QemuOpts *opts, ChardevBackend *backend, Error **errp); - CharDriverState *(*create)(const char *id, ChardevBackend *backend, - ChardevReturn *ret, Error **errp); -} CharDriver; - -static GSList *backends; - -void register_char_driver(const char *name, ChardevBackendKind kind, - void (*parse)(QemuOpts *opts, ChardevBackend *backend, Error **errp), - CharDriverState *(*create)(const char *id, ChardevBackend *backend, - ChardevReturn *ret, Error **errp)) -{ - CharDriver *s; - - s = g_malloc0(sizeof(*s)); - s->name = g_strdup(name); - s->kind = kind; - s->parse = parse; - s->create = create; - - backends = g_slist_append(backends, s); -} - -CharDriverState *qemu_chr_new_from_opts(QemuOpts *opts, - void (*init)(struct CharDriverState *s), - Error **errp) -{ - Error *local_err = NULL; - CharDriver *cd; - CharDriverState *chr; - GSList *i; - ChardevReturn *ret = NULL; - ChardevBackend *backend; - const char *id = qemu_opts_id(opts); - char *bid = NULL; - - if (id == NULL) { - error_setg(errp, "chardev: no id specified"); - goto err; - } - - if (qemu_opt_get(opts, "backend") == NULL) { - error_setg(errp, "chardev: \"%s\" missing backend", - qemu_opts_id(opts)); - goto err; - } - for (i = backends; i; i = i->next) { - cd = i->data; - - if (strcmp(cd->name, qemu_opt_get(opts, "backend")) == 0) { - break; - } - } - if (i == NULL) { - error_setg(errp, "chardev: backend \"%s\" not found", - qemu_opt_get(opts, "backend")); - goto err; - } - - backend = g_new0(ChardevBackend, 1); - - if (qemu_opt_get_bool(opts, "mux", 0)) { - bid = g_strdup_printf("%s-base", id); - } - - chr = NULL; - backend->type = cd->kind; - if (cd->parse) { - cd->parse(opts, backend, &local_err); - if (local_err) { - error_propagate(errp, local_err); - goto qapi_out; - } - } else { - ChardevCommon *cc = g_new0(ChardevCommon, 1); - qemu_chr_parse_common(opts, cc); - backend->u.null.data = cc; /* Any ChardevCommon member would work */ - } - - ret = qmp_chardev_add(bid ? bid : id, backend, errp); - if (!ret) { - goto qapi_out; - } - - if (bid) { - qapi_free_ChardevBackend(backend); - qapi_free_ChardevReturn(ret); - backend = g_new0(ChardevBackend, 1); - backend->u.mux.data = g_new0(ChardevMux, 1); - backend->type = CHARDEV_BACKEND_KIND_MUX; - backend->u.mux.data->chardev = g_strdup(bid); - ret = qmp_chardev_add(id, backend, errp); - if (!ret) { - chr = qemu_chr_find(bid); - qemu_chr_delete(chr); - chr = NULL; - goto qapi_out; - } - } - - chr = qemu_chr_find(id); - chr->opts = opts; - -qapi_out: - qapi_free_ChardevBackend(backend); - qapi_free_ChardevReturn(ret); - g_free(bid); - return chr; - -err: - qemu_opts_del(opts); - return NULL; -} - -CharDriverState *qemu_chr_new_noreplay(const char *label, const char *filename, - void (*init)(struct CharDriverState *s)) -{ - const char *p; - CharDriverState *chr; - QemuOpts *opts; - Error *err = NULL; - - if (strstart(filename, "chardev:", &p)) { - return qemu_chr_find(p); - } - - opts = qemu_chr_parse_compat(label, filename); - if (!opts) - return NULL; - - chr = qemu_chr_new_from_opts(opts, init, &err); - if (err) { - error_report_err(err); - } - if (chr && qemu_opt_get_bool(opts, "mux", 0)) { - qemu_chr_fe_claim_no_fail(chr); - monitor_init(chr, MONITOR_USE_READLINE); - } - return chr; -} - -CharDriverState *qemu_chr_new(const char *label, const char *filename, void (*init)(struct CharDriverState *s)) -{ - CharDriverState *chr; - chr = qemu_chr_new_noreplay(label, filename, init); - if (chr) { - chr->replay = replay_mode != REPLAY_MODE_NONE; - if (chr->replay && chr->chr_ioctl) { - fprintf(stderr, - "Replay: ioctl is not supported for serial devices yet\n"); - } - replay_register_char_driver(chr); - } - return chr; -} - -void qemu_chr_fe_set_echo(struct CharDriverState *chr, bool echo) -{ - if (chr->chr_set_echo) { - chr->chr_set_echo(chr, echo); - } -} - -void qemu_chr_fe_set_open(struct CharDriverState *chr, int fe_open) -{ - if (chr->fe_open == fe_open) { - return; - } - chr->fe_open = fe_open; - if (chr->chr_set_fe_open) { - chr->chr_set_fe_open(chr, fe_open); - } -} - -void qemu_chr_fe_event(struct CharDriverState *chr, int event) -{ - if (chr->chr_fe_event) { - chr->chr_fe_event(chr, event); - } -} - -int qemu_chr_fe_add_watch(CharDriverState *s, GIOCondition cond, - GIOFunc func, void *user_data) -{ - GSource *src; - guint tag; - - if (s->chr_add_watch == NULL) { - return -ENOSYS; - } - - src = s->chr_add_watch(s, cond); - if (!src) { - return -EINVAL; - } - - g_source_set_callback(src, (GSourceFunc)func, user_data, NULL); - tag = g_source_attach(src, NULL); - g_source_unref(src); - - return tag; -} - -int qemu_chr_fe_claim(CharDriverState *s) -{ - if (s->avail_connections < 1) { - return -1; - } - s->avail_connections--; - return 0; -} - -void qemu_chr_fe_claim_no_fail(CharDriverState *s) -{ - if (qemu_chr_fe_claim(s) != 0) { - fprintf(stderr, "%s: error chardev \"%s\" already used\n", - __func__, s->label); - exit(1); - } -} - -void qemu_chr_fe_release(CharDriverState *s) -{ - s->avail_connections++; -} - -static void qemu_chr_free_common(CharDriverState *chr) -{ - g_free(chr->filename); - g_free(chr->label); - qemu_opts_del(chr->opts); - if (chr->logfd != -1) { - close(chr->logfd); - } - qemu_mutex_destroy(&chr->chr_write_lock); - g_free(chr); -} - -void qemu_chr_free(CharDriverState *chr) -{ - if (chr->chr_close) { - chr->chr_close(chr); - } - qemu_chr_free_common(chr); -} - -void qemu_chr_delete(CharDriverState *chr) -{ - QTAILQ_REMOVE(&chardevs, chr, next); - qemu_chr_free(chr); -} - -ChardevInfoList *qmp_query_chardev(Error **errp) -{ - ChardevInfoList *chr_list = NULL; - CharDriverState *chr; - - QTAILQ_FOREACH(chr, &chardevs, next) { - ChardevInfoList *info = g_malloc0(sizeof(*info)); - info->value = g_malloc0(sizeof(*info->value)); - info->value->label = g_strdup(chr->label); - info->value->filename = g_strdup(chr->filename); - info->value->frontend_open = chr->fe_open; - - info->next = chr_list; - chr_list = info; - } - - return chr_list; -} - -ChardevBackendInfoList *qmp_query_chardev_backends(Error **errp) -{ - ChardevBackendInfoList *backend_list = NULL; - CharDriver *c = NULL; - GSList *i = NULL; - - for (i = backends; i; i = i->next) { - ChardevBackendInfoList *info = g_malloc0(sizeof(*info)); - c = i->data; - info->value = g_malloc0(sizeof(*info->value)); - info->value->name = g_strdup(c->name); - - info->next = backend_list; - backend_list = info; - } - - return backend_list; -} - -CharDriverState *qemu_chr_find(const char *name) -{ - CharDriverState *chr; - - QTAILQ_FOREACH(chr, &chardevs, next) { - if (strcmp(chr->label, name) != 0) - continue; - return chr; - } - return NULL; -} - -/* Get a character (serial) device interface. */ -CharDriverState *qemu_char_get_next_serial(void) -{ - static int next_serial; - CharDriverState *chr; - - /* FIXME: This function needs to go away: use chardev properties! */ - - while (next_serial < MAX_SERIAL_PORTS && serial_hds[next_serial]) { - chr = serial_hds[next_serial++]; - qemu_chr_fe_claim_no_fail(chr); - return chr; - } - return NULL; -} - -QemuOptsList qemu_chardev_opts = { - .name = "chardev", - .implied_opt_name = "backend", - .head = QTAILQ_HEAD_INITIALIZER(qemu_chardev_opts.head), - .desc = { - { - .name = "backend", - .type = QEMU_OPT_STRING, - },{ - .name = "path", - .type = QEMU_OPT_STRING, - },{ - .name = "host", - .type = QEMU_OPT_STRING, - },{ - .name = "port", - .type = QEMU_OPT_STRING, - },{ - .name = "localaddr", - .type = QEMU_OPT_STRING, - },{ - .name = "localport", - .type = QEMU_OPT_STRING, - },{ - .name = "to", - .type = QEMU_OPT_NUMBER, - },{ - .name = "ipv4", - .type = QEMU_OPT_BOOL, - },{ - .name = "ipv6", - .type = QEMU_OPT_BOOL, - },{ - .name = "wait", - .type = QEMU_OPT_BOOL, - },{ - .name = "server", - .type = QEMU_OPT_BOOL, - },{ - .name = "delay", - .type = QEMU_OPT_BOOL, - },{ - .name = "reconnect", - .type = QEMU_OPT_NUMBER, - },{ - .name = "telnet", - .type = QEMU_OPT_BOOL, - },{ - .name = "tls-creds", - .type = QEMU_OPT_STRING, - },{ - .name = "width", - .type = QEMU_OPT_NUMBER, - },{ - .name = "height", - .type = QEMU_OPT_NUMBER, - },{ - .name = "cols", - .type = QEMU_OPT_NUMBER, - },{ - .name = "rows", - .type = QEMU_OPT_NUMBER, - },{ - .name = "mux", - .type = QEMU_OPT_BOOL, - },{ - .name = "signal", - .type = QEMU_OPT_BOOL, - },{ - .name = "name", - .type = QEMU_OPT_STRING, - },{ - .name = "debug", - .type = QEMU_OPT_NUMBER, - },{ - .name = "size", - .type = QEMU_OPT_SIZE, - },{ - .name = "chardev", - .type = QEMU_OPT_STRING, - },{ - .name = "append", - .type = QEMU_OPT_BOOL, - },{ - .name = "logfile", - .type = QEMU_OPT_STRING, - },{ - .name = "logappend", - .type = QEMU_OPT_BOOL, - }, - { /* end of list */ } - }, -}; - -#ifdef _WIN32 - -static CharDriverState *qmp_chardev_open_file(const char *id, - ChardevBackend *backend, - ChardevReturn *ret, - Error **errp) -{ - ChardevFile *file = backend->u.file.data; - ChardevCommon *common = qapi_ChardevFile_base(file); - HANDLE out; - - if (file->has_in) { - error_setg(errp, "input file not supported"); - return NULL; - } - - out = CreateFile(file->out, GENERIC_WRITE, FILE_SHARE_READ, NULL, - OPEN_ALWAYS, FILE_ATTRIBUTE_NORMAL, NULL); - if (out == INVALID_HANDLE_VALUE) { - error_setg(errp, "open %s failed", file->out); - return NULL; - } - return qemu_chr_open_win_file(out, common, errp); -} - -static CharDriverState *qmp_chardev_open_serial(const char *id, - ChardevBackend *backend, - ChardevReturn *ret, - Error **errp) -{ - ChardevHostdev *serial = backend->u.serial.data; - ChardevCommon *common = qapi_ChardevHostdev_base(serial); - return qemu_chr_open_win_path(serial->device, common, errp); -} - -#else /* WIN32 */ - -static int qmp_chardev_open_file_source(char *src, int flags, - Error **errp) -{ - int fd = -1; - - TFR(fd = qemu_open(src, flags, 0666)); - if (fd == -1) { - error_setg_file_open(errp, errno, src); - } - return fd; -} - -static CharDriverState *qmp_chardev_open_file(const char *id, - ChardevBackend *backend, - ChardevReturn *ret, - Error **errp) -{ - ChardevFile *file = backend->u.file.data; - ChardevCommon *common = qapi_ChardevFile_base(file); - int flags, in = -1, out; - - flags = O_WRONLY | O_CREAT | O_BINARY; - if (file->has_append && file->append) { - flags |= O_APPEND; - } else { - flags |= O_TRUNC; - } - - out = qmp_chardev_open_file_source(file->out, flags, errp); - if (out < 0) { - return NULL; - } - - if (file->has_in) { - flags = O_RDONLY; - in = qmp_chardev_open_file_source(file->in, flags, errp); - if (in < 0) { - qemu_close(out); - return NULL; - } - } - - return qemu_chr_open_fd(in, out, common, errp); -} - -#ifdef HAVE_CHARDEV_SERIAL -static CharDriverState *qmp_chardev_open_serial(const char *id, - ChardevBackend *backend, - ChardevReturn *ret, - Error **errp) -{ - ChardevHostdev *serial = backend->u.serial.data; - ChardevCommon *common = qapi_ChardevHostdev_base(serial); - int fd; - - fd = qmp_chardev_open_file_source(serial->device, O_RDWR, errp); - if (fd < 0) { - return NULL; - } - qemu_set_nonblock(fd); - return qemu_chr_open_tty_fd(fd, common, errp); -} -#endif - -#ifdef HAVE_CHARDEV_PARPORT -static CharDriverState *qmp_chardev_open_parallel(const char *id, - ChardevBackend *backend, - ChardevReturn *ret, - Error **errp) -{ - ChardevHostdev *parallel = backend->u.parallel.data; - ChardevCommon *common = qapi_ChardevHostdev_base(parallel); - int fd; - - fd = qmp_chardev_open_file_source(parallel->device, O_RDWR, errp); - if (fd < 0) { - return NULL; - } - return qemu_chr_open_pp_fd(fd, common, errp); -} -#endif - -#endif /* WIN32 */ - -static gboolean socket_reconnect_timeout(gpointer opaque) -{ - CharDriverState *chr = opaque; - TCPCharDriver *s = chr->opaque; - QIOChannelSocket *sioc; - - s->reconnect_timer = 0; - - if (chr->be_open) { - return false; - } - - sioc = qio_channel_socket_new(); - qio_channel_socket_connect_async(sioc, s->addr, - qemu_chr_socket_connected, - chr, NULL); - - return false; -} - -static CharDriverState *qmp_chardev_open_socket(const char *id, - ChardevBackend *backend, - ChardevReturn *ret, - Error **errp) -{ - CharDriverState *chr; - TCPCharDriver *s; - ChardevSocket *sock = backend->u.socket.data; - SocketAddress *addr = sock->addr; - bool do_nodelay = sock->has_nodelay ? sock->nodelay : false; - bool is_listen = sock->has_server ? sock->server : true; - bool is_telnet = sock->has_telnet ? sock->telnet : false; - bool is_waitconnect = sock->has_wait ? sock->wait : false; - int64_t reconnect = sock->has_reconnect ? sock->reconnect : 0; - ChardevCommon *common = qapi_ChardevSocket_base(sock); - QIOChannelSocket *sioc = NULL; - - chr = qemu_chr_alloc(common, errp); - if (!chr) { - return NULL; - } - s = g_new0(TCPCharDriver, 1); - - s->is_unix = addr->type == SOCKET_ADDRESS_KIND_UNIX; - s->is_listen = is_listen; - s->is_telnet = is_telnet; - s->do_nodelay = do_nodelay; - if (sock->tls_creds) { - Object *creds; - creds = object_resolve_path_component( - object_get_objects_root(), sock->tls_creds); - if (!creds) { - error_setg(errp, "No TLS credentials with id '%s'", - sock->tls_creds); - goto error; - } - s->tls_creds = (QCryptoTLSCreds *) - object_dynamic_cast(creds, - TYPE_QCRYPTO_TLS_CREDS); - if (!s->tls_creds) { - error_setg(errp, "Object with id '%s' is not TLS credentials", - sock->tls_creds); - goto error; - } - object_ref(OBJECT(s->tls_creds)); - if (is_listen) { - if (s->tls_creds->endpoint != QCRYPTO_TLS_CREDS_ENDPOINT_SERVER) { - error_setg(errp, "%s", - "Expected TLS credentials for server endpoint"); - goto error; - } - } else { - if (s->tls_creds->endpoint != QCRYPTO_TLS_CREDS_ENDPOINT_CLIENT) { - error_setg(errp, "%s", - "Expected TLS credentials for client endpoint"); - goto error; - } - } - } - - qapi_copy_SocketAddress(&s->addr, sock->addr); - - chr->opaque = s; - chr->chr_write = tcp_chr_write; - chr->chr_sync_read = tcp_chr_sync_read; - chr->chr_close = tcp_chr_close; - chr->get_msgfds = tcp_get_msgfds; - chr->set_msgfds = tcp_set_msgfds; - chr->chr_add_client = tcp_chr_add_client; - chr->chr_add_watch = tcp_chr_add_watch; - chr->chr_update_read_handler = tcp_chr_update_read_handler; - /* be isn't opened until we get a connection */ - chr->explicit_be_open = true; - - chr->filename = SocketAddress_to_str("disconnected:", - addr, is_listen, is_telnet); - - if (is_listen) { - if (is_telnet) { - s->do_telnetopt = 1; - } - } else if (reconnect > 0) { - s->reconnect_time = reconnect; - } - - sioc = qio_channel_socket_new(); - if (s->reconnect_time) { - qio_channel_socket_connect_async(sioc, s->addr, - qemu_chr_socket_connected, - chr, NULL); - } else if (s->is_listen) { - if (qio_channel_socket_listen_sync(sioc, s->addr, errp) < 0) { - goto error; - } - s->listen_ioc = sioc; - if (is_waitconnect) { - fprintf(stderr, "QEMU waiting for connection on: %s\n", - chr->filename); - tcp_chr_accept(QIO_CHANNEL(s->listen_ioc), G_IO_IN, chr); - } - qio_channel_set_blocking(QIO_CHANNEL(s->listen_ioc), false, NULL); - if (!s->ioc) { - s->listen_tag = qio_channel_add_watch( - QIO_CHANNEL(s->listen_ioc), G_IO_IN, tcp_chr_accept, chr, NULL); - } - } else { - if (qio_channel_socket_connect_sync(sioc, s->addr, errp) < 0) { - goto error; - } - tcp_chr_new_client(chr, sioc); - object_unref(OBJECT(sioc)); - } - - return chr; - - error: - if (sioc) { - object_unref(OBJECT(sioc)); - } - if (s->tls_creds) { - object_unref(OBJECT(s->tls_creds)); - } - g_free(s); - qemu_chr_free_common(chr); - return NULL; -} - -static CharDriverState *qmp_chardev_open_udp(const char *id, - ChardevBackend *backend, - ChardevReturn *ret, - Error **errp) -{ - ChardevUdp *udp = backend->u.udp.data; - ChardevCommon *common = qapi_ChardevUdp_base(udp); - QIOChannelSocket *sioc = qio_channel_socket_new(); - - if (qio_channel_socket_dgram_sync(sioc, - udp->local, udp->remote, - errp) < 0) { - object_unref(OBJECT(sioc)); - return NULL; - } - return qemu_chr_open_udp(sioc, common, errp); -} - -ChardevReturn *qmp_chardev_add(const char *id, ChardevBackend *backend, - Error **errp) -{ - ChardevReturn *ret = g_new0(ChardevReturn, 1); - CharDriverState *chr = NULL; - Error *local_err = NULL; - GSList *i; - CharDriver *cd; - - chr = qemu_chr_find(id); - if (chr) { - error_setg(errp, "Chardev '%s' already exists", id); - g_free(ret); - return NULL; - } - - for (i = backends; i; i = i->next) { - cd = i->data; - - if (cd->kind == backend->type) { - chr = cd->create(id, backend, ret, &local_err); - if (local_err) { - error_propagate(errp, local_err); - goto out_error; - } - break; - } - } - - if (chr == NULL) { - assert(!i); - error_setg(errp, "chardev backend not available"); - goto out_error; - } - - chr->label = g_strdup(id); - chr->avail_connections = - (backend->type == CHARDEV_BACKEND_KIND_MUX) ? MAX_MUX : 1; - if (!chr->filename) { - chr->filename = g_strdup(ChardevBackendKind_lookup[backend->type]); - } - if (!chr->explicit_be_open) { - qemu_chr_be_event(chr, CHR_EVENT_OPENED); - } - QTAILQ_INSERT_TAIL(&chardevs, chr, next); - return ret; - -out_error: - g_free(ret); - return NULL; -} - -void qmp_chardev_remove(const char *id, Error **errp) -{ - CharDriverState *chr; - - chr = qemu_chr_find(id); - if (chr == NULL) { - error_setg(errp, "Chardev '%s' not found", id); - return; - } - if (chr->chr_can_read || chr->chr_read || - chr->chr_event || chr->handler_opaque) { - error_setg(errp, "Chardev '%s' is busy", id); - return; - } - if (chr->replay) { - error_setg(errp, - "Chardev '%s' cannot be unplugged in record/replay mode", id); - return; - } - qemu_chr_delete(chr); -} - -static void register_types(void) -{ - register_char_driver("null", CHARDEV_BACKEND_KIND_NULL, NULL, - qemu_chr_open_null); - register_char_driver("socket", CHARDEV_BACKEND_KIND_SOCKET, - qemu_chr_parse_socket, qmp_chardev_open_socket); - register_char_driver("udp", CHARDEV_BACKEND_KIND_UDP, qemu_chr_parse_udp, - qmp_chardev_open_udp); - register_char_driver("ringbuf", CHARDEV_BACKEND_KIND_RINGBUF, - qemu_chr_parse_ringbuf, qemu_chr_open_ringbuf); - register_char_driver("file", CHARDEV_BACKEND_KIND_FILE, - qemu_chr_parse_file_out, qmp_chardev_open_file); - register_char_driver("stdio", CHARDEV_BACKEND_KIND_STDIO, - qemu_chr_parse_stdio, qemu_chr_open_stdio); -#if defined HAVE_CHARDEV_SERIAL - register_char_driver("serial", CHARDEV_BACKEND_KIND_SERIAL, - qemu_chr_parse_serial, qmp_chardev_open_serial); - register_char_driver("tty", CHARDEV_BACKEND_KIND_SERIAL, - qemu_chr_parse_serial, qmp_chardev_open_serial); -#endif -#ifdef HAVE_CHARDEV_PARPORT - register_char_driver("parallel", CHARDEV_BACKEND_KIND_PARALLEL, - qemu_chr_parse_parallel, qmp_chardev_open_parallel); - register_char_driver("parport", CHARDEV_BACKEND_KIND_PARALLEL, - qemu_chr_parse_parallel, qmp_chardev_open_parallel); -#endif -#ifdef HAVE_CHARDEV_PTY - register_char_driver("pty", CHARDEV_BACKEND_KIND_PTY, NULL, - qemu_chr_open_pty); -#endif -#ifdef _WIN32 - register_char_driver("console", CHARDEV_BACKEND_KIND_CONSOLE, NULL, - qemu_chr_open_win_con); -#endif - register_char_driver("pipe", CHARDEV_BACKEND_KIND_PIPE, - qemu_chr_parse_pipe, qemu_chr_open_pipe); - register_char_driver("mux", CHARDEV_BACKEND_KIND_MUX, qemu_chr_parse_mux, - qemu_chr_open_mux); - /* Bug-compatibility: */ - register_char_driver("memory", CHARDEV_BACKEND_KIND_MEMORY, - qemu_chr_parse_ringbuf, qemu_chr_open_ringbuf); - /* this must be done after machine init, since we register FEs with muxes - * as part of realize functions like serial_isa_realizefn when -nographic - * is specified - */ - qemu_add_machine_init_done_notifier(&muxes_realize_notify); -} - -type_init(register_types); |