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Implement "info chardev" command. (Gerd Hoffmann)

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This patch makes qemu keep track of the character devices in use and
implements a "info chardev" monitor command to print a list.

qemu_chr_open() sticks the devices into a linked list now.  It got a new
argument (label), so there is a name for each device.  It also assigns a
filename to each character device.  By default it just copyes the
filename passed in.  Individual drivers can fill in something else
though.  qemu_chr_open_pty() sets the filename to name of the pseudo tty
allocated.

Output looks like this:

  (qemu) info chardev
  monitor: filename=unix:/tmp/run.sh-26827/monitor,server,nowait
  serial0: filename=unix:/tmp/run.sh-26827/console,server
  serial1: filename=pty:/dev/pts/5
  parallel0: filename=vc:640x480

Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>



git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@5575 c046a42c-6fe2-441c-8c8c-71466251a162
This commit is contained in:
aliguori 2008-10-31 17:31:29 +00:00
parent 1490791f61
commit 5ccfae10a7
5 changed files with 78 additions and 36 deletions
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7
qemu-char.h
View file

@ -1,6 +1,7 @@
#ifndef QEMU_CHAR_H
#define QEMU_CHAR_H
#include "sys-queue.h"
/* character device */
#define CHR_EVENT_BREAK 0 /* serial break char */
@ -55,9 +56,12 @@ struct CharDriverState {
void *opaque;
int focus;
QEMUBH *bh;
char *label;
char *filename;
TAILQ_ENTRY(CharDriverState) next;
};
CharDriverState *qemu_chr_open(const char *filename);
CharDriverState *qemu_chr_open(const char *label, const char *filename);
void qemu_chr_close(CharDriverState *chr);
void qemu_chr_printf(CharDriverState *s, const char *fmt, ...);
int qemu_chr_write(CharDriverState *s, const uint8_t *buf, int len);
@ -72,6 +76,7 @@ void qemu_chr_reset(CharDriverState *s);
int qemu_chr_can_read(CharDriverState *s);
void qemu_chr_read(CharDriverState *s, uint8_t *buf, int len);
void qemu_chr_accept_input(CharDriverState *s);
void qemu_chr_info(void);
/* async I/O support */