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Add chardev API qemu_chr_fe_read_all

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This function will attempt to read data from the chardev trying
to fill the buffer up to the given length.
Add tcp_chr_disconnect to reuse disconnection code where needed.

Signed-off-by: Antonios Motakis <a.motakis@virtualopensystems.com>
Signed-off-by: Nikolay Nikolaev <n.nikolaev@virtualopensystems.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
This commit is contained in:
Nikolay Nikolaev 2014-05-27 15:03:48 +03:00 • committed by Michael S. Tsirkin
parent 69e03ae64b
commit 7b0bfdf52d
2 changed files with 87 additions and 10 deletions
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14
include/sysemu/char.h
View file

@ -56,6 +56,8 @@ typedef void IOEventHandler(void *opaque, int event);
struct CharDriverState {
void (*init)(struct CharDriverState *s);
int (*chr_write)(struct CharDriverState *s, const uint8_t *buf, int len);
int (*chr_sync_read)(struct CharDriverState *s,
const uint8_t *buf, int len);
GSource *(*chr_add_watch)(struct CharDriverState *s, GIOCondition cond);
void (*chr_update_read_handler)(struct CharDriverState *s);
int (*chr_ioctl)(struct CharDriverState *s, int cmd, void *arg);
@ -188,6 +190,18 @@ int qemu_chr_fe_write(CharDriverState *s, const uint8_t *buf, int len);
*/
int qemu_chr_fe_write_all(CharDriverState *s, const uint8_t *buf, int len);
/**
* @qemu_chr_fe_read_all:
*
* Read data to a buffer from the back end.
*
* @buf the data buffer
* @len the number of bytes to read
*
* Returns: the number of bytes read
*/
int qemu_chr_fe_read_all(CharDriverState *s, uint8_t *buf, int len);
/**
* @qemu_chr_fe_ioctl:
*