diff options
author | Marc-André Lureau <marcandre.lureau@redhat.com> | 2016-12-12 17:08:59 +0300 |
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committer | Marc-André Lureau <marcandre.lureau@redhat.com> | 2017-01-31 23:31:21 +0400 |
commit | 894593afbe3228872812763166e49484126c049f (patch) | |
tree | 1e4d3367b0c0cc760b068faf15c09cfaa56dd701 /chardev | |
parent | a6da7ffa38f7715f863b4e926dd2cce6b5ce4acd (diff) | |
download | qemu-894593afbe3228872812763166e49484126c049f.zip qemu-894593afbe3228872812763166e49484126c049f.tar.gz qemu-894593afbe3228872812763166e49484126c049f.tar.bz2 |
char: move fd chardev in its own file
Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Acked-by: Eric Blake <eblake@redhat.com>
Diffstat (limited to 'chardev')
-rw-r--r-- | chardev/Makefile.objs | 1 | ||||
-rw-r--r-- | chardev/char-fd.c | 170 | ||||
-rw-r--r-- | chardev/char-fd.h | 44 | ||||
-rw-r--r-- | chardev/char.c | 147 |
4 files changed, 217 insertions, 145 deletions
diff --git a/chardev/Makefile.objs b/chardev/Makefile.objs index 5f5d371..d2f03dc 100644 --- a/chardev/Makefile.objs +++ b/chardev/Makefile.objs @@ -1,4 +1,5 @@ chardev-obj-y += char.o +chardev-obj-$(CONFIG_POSIX) += char-fd.o chardev-obj-y += char-io.o chardev-obj-y += char-mux.o chardev-obj-y += char-null.o diff --git a/chardev/char-fd.c b/chardev/char-fd.c new file mode 100644 index 0000000..fb51ab4 --- /dev/null +++ b/chardev/char-fd.c @@ -0,0 +1,170 @@ +/* + * 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/sockets.h" +#include "qapi/error.h" +#include "qemu-common.h" +#include "sysemu/char.h" +#include "io/channel-file.h" + +#include "char-fd.h" +#include "char-io.h" + +/* Called with chr_write_lock held. */ +static int fd_chr_write(Chardev *chr, const uint8_t *buf, int len) +{ + FDChardev *s = FD_CHARDEV(chr); + + return io_channel_send(s->ioc_out, buf, len); +} + +static gboolean fd_chr_read(QIOChannel *chan, GIOCondition cond, void *opaque) +{ + Chardev *chr = CHARDEV(opaque); + FDChardev *s = FD_CHARDEV(opaque); + int len; + uint8_t buf[CHR_READ_BUF_LEN]; + ssize_t ret; + + len = sizeof(buf); + if (len > s->max_size) { + len = s->max_size; + } + if (len == 0) { + return TRUE; + } + + ret = qio_channel_read( + chan, (gchar *)buf, len, NULL); + if (ret == 0) { + remove_fd_in_watch(chr); + qemu_chr_be_event(chr, CHR_EVENT_CLOSED); + return FALSE; + } + if (ret > 0) { + qemu_chr_be_write(chr, buf, ret); + } + + return TRUE; +} + +static int fd_chr_read_poll(void *opaque) +{ + Chardev *chr = CHARDEV(opaque); + FDChardev *s = FD_CHARDEV(opaque); + + s->max_size = qemu_chr_be_can_write(chr); + return s->max_size; +} + +static GSource *fd_chr_add_watch(Chardev *chr, GIOCondition cond) +{ + FDChardev *s = FD_CHARDEV(chr); + return qio_channel_create_watch(s->ioc_out, cond); +} + +static void fd_chr_update_read_handler(Chardev *chr, + GMainContext *context) +{ + FDChardev *s = FD_CHARDEV(chr); + + remove_fd_in_watch(chr); + if (s->ioc_in) { + chr->fd_in_tag = io_add_watch_poll(chr, s->ioc_in, + fd_chr_read_poll, + fd_chr_read, chr, + context); + } +} + +static void char_fd_finalize(Object *obj) +{ + Chardev *chr = CHARDEV(obj); + FDChardev *s = FD_CHARDEV(obj); + + remove_fd_in_watch(chr); + if (s->ioc_in) { + object_unref(OBJECT(s->ioc_in)); + } + if (s->ioc_out) { + object_unref(OBJECT(s->ioc_out)); + } + + qemu_chr_be_event(chr, CHR_EVENT_CLOSED); +} + +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; +} + +/* open a character device to a unix fd */ +void qemu_chr_open_fd(Chardev *chr, + int fd_in, int fd_out) +{ + FDChardev *s = FD_CHARDEV(chr); + char *name; + + s->ioc_in = QIO_CHANNEL(qio_channel_file_new_fd(fd_in)); + name = g_strdup_printf("chardev-file-in-%s", chr->label); + qio_channel_set_name(QIO_CHANNEL(s->ioc_in), name); + g_free(name); + s->ioc_out = QIO_CHANNEL(qio_channel_file_new_fd(fd_out)); + name = g_strdup_printf("chardev-file-out-%s", chr->label); + qio_channel_set_name(QIO_CHANNEL(s->ioc_out), name); + g_free(name); + qemu_set_nonblock(fd_out); + s->chr = chr; +} + +static void char_fd_class_init(ObjectClass *oc, void *data) +{ + ChardevClass *cc = CHARDEV_CLASS(oc); + + cc->chr_add_watch = fd_chr_add_watch; + cc->chr_write = fd_chr_write; + cc->chr_update_read_handler = fd_chr_update_read_handler; +} + +static const TypeInfo char_fd_type_info = { + .name = TYPE_CHARDEV_FD, + .parent = TYPE_CHARDEV, + .instance_size = sizeof(FDChardev), + .instance_finalize = char_fd_finalize, + .class_init = char_fd_class_init, + .abstract = true, +}; + +static void register_types(void) +{ + type_register_static(&char_fd_type_info); +} + +type_init(register_types); diff --git a/chardev/char-fd.h b/chardev/char-fd.h new file mode 100644 index 0000000..d832798 --- /dev/null +++ b/chardev/char-fd.h @@ -0,0 +1,44 @@ +/* + * 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. + */ +#ifndef CHAR_FD_H +#define CHAR_FD_H + +#include "io/channel.h" +#include "sysemu/char.h" + +typedef struct FDChardev { + Chardev parent; + Chardev *chr; + QIOChannel *ioc_in, *ioc_out; + int max_size; +} FDChardev; + +#define TYPE_CHARDEV_FD "chardev-fd" + +#define FD_CHARDEV(obj) OBJECT_CHECK(FDChardev, (obj), TYPE_CHARDEV_FD) + +void qemu_chr_open_fd(Chardev *chr, int fd_in, int fd_out); +int qmp_chardev_open_file_source(char *src, int flags, Error **errp); + +#endif /* CHAR_FD_H */ diff --git a/chardev/char.c b/chardev/char.c index 3cbe42a..aad57ac 100644 --- a/chardev/char.c +++ b/chardev/char.c @@ -86,6 +86,7 @@ #include "ui/qemu-spice.h" #include "char-mux.h" +#include "char-fd.h" #include "char-io.h" #define TCP_MAX_FDS 16 @@ -716,136 +717,6 @@ void qemu_chr_fe_take_focus(CharBackend *b) } #ifndef _WIN32 -typedef struct FDChardev { - Chardev parent; - Chardev *chr; - QIOChannel *ioc_in, *ioc_out; - int max_size; -} FDChardev; - -#define TYPE_CHARDEV_FD "chardev-fd" -#define FD_CHARDEV(obj) OBJECT_CHECK(FDChardev, (obj), TYPE_CHARDEV_FD) - -/* Called with chr_write_lock held. */ -static int fd_chr_write(Chardev *chr, const uint8_t *buf, int len) -{ - FDChardev *s = FD_CHARDEV(chr); - - return io_channel_send(s->ioc_out, buf, len); -} - -static gboolean fd_chr_read(QIOChannel *chan, GIOCondition cond, void *opaque) -{ - Chardev *chr = CHARDEV(opaque); - FDChardev *s = FD_CHARDEV(opaque); - int len; - uint8_t buf[CHR_READ_BUF_LEN]; - ssize_t ret; - - len = sizeof(buf); - if (len > s->max_size) { - len = s->max_size; - } - if (len == 0) { - return TRUE; - } - - ret = qio_channel_read( - chan, (gchar *)buf, len, NULL); - if (ret == 0) { - remove_fd_in_watch(chr); - qemu_chr_be_event(chr, CHR_EVENT_CLOSED); - return FALSE; - } - if (ret > 0) { - qemu_chr_be_write(chr, buf, ret); - } - - return TRUE; -} - -static int fd_chr_read_poll(void *opaque) -{ - Chardev *chr = CHARDEV(opaque); - FDChardev *s = FD_CHARDEV(opaque); - - s->max_size = qemu_chr_be_can_write(chr); - return s->max_size; -} - -static GSource *fd_chr_add_watch(Chardev *chr, GIOCondition cond) -{ - FDChardev *s = FD_CHARDEV(chr); - return qio_channel_create_watch(s->ioc_out, cond); -} - -static void fd_chr_update_read_handler(Chardev *chr, - GMainContext *context) -{ - FDChardev *s = FD_CHARDEV(chr); - - remove_fd_in_watch(chr); - if (s->ioc_in) { - chr->fd_in_tag = io_add_watch_poll(chr, s->ioc_in, - fd_chr_read_poll, - fd_chr_read, chr, - context); - } -} - -static void char_fd_finalize(Object *obj) -{ - Chardev *chr = CHARDEV(obj); - FDChardev *s = FD_CHARDEV(obj); - - remove_fd_in_watch(chr); - if (s->ioc_in) { - object_unref(OBJECT(s->ioc_in)); - } - if (s->ioc_out) { - object_unref(OBJECT(s->ioc_out)); - } - - qemu_chr_be_event(chr, CHR_EVENT_CLOSED); -} - -/* open a character device to a unix fd */ -static void qemu_chr_open_fd(Chardev *chr, - int fd_in, int fd_out) -{ - FDChardev *s = FD_CHARDEV(chr); - char *name; - - s->ioc_in = QIO_CHANNEL(qio_channel_file_new_fd(fd_in)); - name = g_strdup_printf("chardev-file-in-%s", chr->label); - qio_channel_set_name(QIO_CHANNEL(s->ioc_in), name); - g_free(name); - s->ioc_out = QIO_CHANNEL(qio_channel_file_new_fd(fd_out)); - name = g_strdup_printf("chardev-file-out-%s", chr->label); - qio_channel_set_name(QIO_CHANNEL(s->ioc_out), name); - g_free(name); - qemu_set_nonblock(fd_out); - s->chr = chr; -} - -static void char_fd_class_init(ObjectClass *oc, void *data) -{ - ChardevClass *cc = CHARDEV_CLASS(oc); - - cc->chr_add_watch = fd_chr_add_watch; - cc->chr_write = fd_chr_write; - cc->chr_update_read_handler = fd_chr_update_read_handler; -} - -static const TypeInfo char_fd_type_info = { - .name = TYPE_CHARDEV_FD, - .parent = TYPE_CHARDEV, - .instance_size = sizeof(FDChardev), - .instance_finalize = char_fd_finalize, - .class_init = char_fd_class_init, - .abstract = true, -}; - static void qemu_chr_open_pipe(Chardev *chr, ChardevBackend *backend, bool *be_opened, @@ -3875,18 +3746,6 @@ static void qmp_chardev_open_serial(Chardev *chr, #else /* WIN32 */ -static int qmp_chardev_open_file_source(char *src, int flags, - Error **errp) -{ - int fd = -1; - - TFR(fd = qemu_open(src, flags, 0666)); - if (fd == -1) { - error_setg_file_open(errp, errno, src); - } - return fd; -} - static void qmp_chardev_open_file(Chardev *chr, ChardevBackend *backend, bool *be_opened, @@ -4342,9 +4201,7 @@ void qemu_chr_cleanup(void) static void register_types(void) { type_register_static(&char_type_info); -#ifndef _WIN32 - type_register_static(&char_fd_type_info); -#else +#ifdef _WIN32 type_register_static(&char_win_type_info); type_register_static(&char_win_stdio_type_info); #endif |