Stefano Stabellini
2009-Mar-02 17:13 UTC
[Xen-devel] [PATCH 1 of 13] Implement "info chardev" command. (Gerd Hoffmann)
Import "Implement "info chardev" command." from qemu
mainstream.
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@5575
c046a42c-6fe2-441c-8c8c-71466251a162
Signed-off-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
---
diff -r 4c26bca47749 gdbstub.c
--- a/gdbstub.c Mon Feb 09 10:40:12 2009 +0000
+++ b/gdbstub.c Mon Feb 16 11:08:06 2009 +0000
@@ -1852,7 +1852,7 @@
port = gdbstub_port_name;
}
- chr = qemu_chr_open(port);
+ chr = qemu_chr_open("gdb", port);
if (!chr)
return -1;
diff -r 4c26bca47749 hw/usb-serial.c
--- a/hw/usb-serial.c Mon Feb 09 10:40:12 2009 +0000
+++ b/hw/usb-serial.c Mon Feb 16 11:08:06 2009 +0000
@@ -521,6 +521,8 @@
USBSerialState *s;
CharDriverState *cdrv;
unsigned short vendorid = 0x0403, productid = 0x6001;
+ char label[32];
+ static int index;
while (*filename && *filename != '':'') {
const char *p;
@@ -555,7 +557,8 @@
if (!s)
return NULL;
- cdrv = qemu_chr_open(filename);
+ snprintf(label, sizeof(label), "usbserial%d", index++);
+ cdrv = qemu_chr_open(label, filename);
if (!cdrv)
goto fail;
s->cs = cdrv;
diff -r 4c26bca47749 monitor.c
--- a/monitor.c Mon Feb 09 10:40:12 2009 +0000
+++ b/monitor.c Mon Feb 16 11:08:06 2009 +0000
@@ -1477,6 +1477,8 @@
"", "show the version of qemu" },
{ "network", "", do_info_network,
"", "show the network state" },
+ { "chardev", "", qemu_chr_info,
+ "", "show the character devices" },
{ "block", "", do_info_block,
"", "show the block devices" },
{ "blockstats", "", do_info_blockstats,
diff -r 4c26bca47749 qemu-char.h
--- a/qemu-char.h Mon Feb 09 10:40:12 2009 +0000
+++ b/qemu-char.h Mon Feb 16 11:08:06 2009 +0000
@@ -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 */
@@ -56,9 +57,12 @@
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);
@@ -73,6 +77,7 @@
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 */
diff -r 4c26bca47749 vl.c
--- a/vl.c Mon Feb 09 10:40:12 2009 +0000
+++ b/vl.c Mon Feb 16 11:08:06 2009 +0000
@@ -2645,7 +2645,7 @@
CharDriverState *chr;
PtyCharDriver *s;
struct termios tty;
- int slave_fd;
+ int slave_fd, len;
#if defined(__OpenBSD__)
char pty_name[PATH_MAX];
#define q_ptsname(x) pty_name
@@ -2673,6 +2673,9 @@
tcsetattr(slave_fd, TCSAFLUSH, &tty);
close(slave_fd);
+ len = strlen(q_ptsname(s->fd)) + 5;
+ chr->filename = qemu_malloc(len);
+ snprintf(chr->filename, len, "pty:%s", q_ptsname(s->fd));
fprintf(stderr, "char device redirected to %s\n",
q_ptsname(s->fd));
chr->opaque = s;
@@ -3829,88 +3832,113 @@
return NULL;
}
-CharDriverState *qemu_chr_open(const char *filename)
+static TAILQ_HEAD(CharDriverStateHead, CharDriverState) chardevs
+= TAILQ_HEAD_INITIALIZER(chardevs);
+
+CharDriverState *qemu_chr_open(const char *label, const char *filename)
{
const char *p;
+ CharDriverState *chr;
if (!strcmp(filename, "vc")) {
- return text_console_init(&display_state, 0);
- } else if (strstart(filename, "vc:", &p)) {
- return text_console_init(&display_state, p);
- } else if (!strcmp(filename, "null")) {
- return qemu_chr_open_null();
+ chr = text_console_init(&display_state, 0);
+ } else
+ if (strstart(filename, "vc:", &p)) {
+ chr = text_console_init(&display_state, p);
+ } else
+ if (!strcmp(filename, "null")) {
+ chr = qemu_chr_open_null();
} else
if (strstart(filename, "tcp:", &p)) {
- return qemu_chr_open_tcp(p, 0, 0);
+ chr = qemu_chr_open_tcp(p, 0, 0);
} else
if (strstart(filename, "telnet:", &p)) {
- return qemu_chr_open_tcp(p, 1, 0);
+ chr = qemu_chr_open_tcp(p, 1, 0);
} else
if (strstart(filename, "udp:", &p)) {
- return qemu_chr_open_udp(p);
+ chr = qemu_chr_open_udp(p);
} else
if (strstart(filename, "mon:", &p)) {
- CharDriverState *drv = qemu_chr_open(p);
- if (drv) {
- drv = qemu_chr_open_mux(drv);
- monitor_init(drv, !nographic);
- return drv;
- }
- printf("Unable to open driver: %s\n", p);
- return 0;
+ chr = qemu_chr_open(label, p);
+ if (chr) {
+ chr = qemu_chr_open_mux(chr);
+ monitor_init(chr, !nographic);
+ } else {
+ printf("Unable to open driver: %s\n", p);
+ }
} else
#ifndef _WIN32
if (strstart(filename, "unix:", &p)) {
- return qemu_chr_open_tcp(p, 0, 1);
+ chr = qemu_chr_open_tcp(p, 0, 1);
} else if (strstart(filename, "file:", &p)) {
- return qemu_chr_open_file_out(p);
+ chr = qemu_chr_open_file_out(p);
} else if (strstart(filename, "pipe:", &p)) {
- return qemu_chr_open_pipe(p);
+ chr = qemu_chr_open_pipe(p);
} else if (!strcmp(filename, "pty")) {
- return qemu_chr_open_pty();
+ chr = qemu_chr_open_pty();
} else if (!strcmp(filename, "stdio")) {
- return qemu_chr_open_stdio();
+ chr = qemu_chr_open_stdio();
} else
#if defined(__linux__)
if (strstart(filename, "/dev/parport", NULL)) {
- return qemu_chr_open_pp(filename);
+ chr = qemu_chr_open_pp(filename);
} else
#endif
#if defined(__linux__) || defined(__sun__) || defined(__FreeBSD__) \
|| defined(__NetBSD__) || defined(__OpenBSD__)
if (strstart(filename, "/dev/", NULL)) {
- return qemu_chr_open_tty(filename);
+ chr = qemu_chr_open_tty(filename);
} else
#endif
#else /* !_WIN32 */
if (strstart(filename, "COM", NULL)) {
- return qemu_chr_open_win(filename);
+ chr = qemu_chr_open_win(filename);
} else
if (strstart(filename, "pipe:", &p)) {
- return qemu_chr_open_win_pipe(p);
+ chr = qemu_chr_open_win_pipe(p);
} else
if (strstart(filename, "con:", NULL)) {
- return qemu_chr_open_win_con(filename);
+ chr = qemu_chr_open_win_con(filename);
} else
if (strstart(filename, "file:", &p)) {
- return qemu_chr_open_win_file_out(p);
+ chr = qemu_chr_open_win_file_out(p);
} else
#endif
#ifdef CONFIG_BRLAPI
if (!strcmp(filename, "braille")) {
- return chr_baum_init();
- } else
-#endif
- {
- return NULL;
- }
+ chr = chr_baum_init();
+ } else
+#endif
+ {
+ chr = NULL;
+ }
+
+ if (chr) {
+ if (!chr->filename)
+ chr->filename = qemu_strdup(filename);
+ chr->label = qemu_strdup(label);
+ TAILQ_INSERT_TAIL(&chardevs, chr, next);
+ }
+ return chr;
}
void qemu_chr_close(CharDriverState *chr)
{
+ TAILQ_REMOVE(&chardevs, chr, next);
if (chr->chr_close)
chr->chr_close(chr);
+ qemu_free(chr->filename);
+ qemu_free(chr->label);
qemu_free(chr);
+}
+
+void qemu_chr_info(void)
+{
+ CharDriverState *chr;
+
+ TAILQ_FOREACH(chr, &chardevs, next) {
+ term_printf("%s: filename=%s\n", chr->label,
chr->filename);
+ }
}
#ifdef CONFIG_PASSTHROUGH
@@ -10062,7 +10090,7 @@
}
}
if (monitor_device) {
- monitor_hd = qemu_chr_open(monitor_device);
+ monitor_hd = qemu_chr_open("monitor", monitor_device);
if (!monitor_hd) {
fprintf(stderr, "qemu: could not open monitor device
''%s''\n", monitor_device);
exit(1);
@@ -10073,7 +10101,9 @@
for(i = 0; i < MAX_SERIAL_PORTS; i++) {
const char *devname = serial_devices[i];
if (devname && strcmp(devname, "none")) {
- serial_hds[i] = qemu_chr_open(devname);
+ char label[32];
+ snprintf(label, sizeof(label), "serial%d", i);
+ serial_hds[i] = qemu_chr_open(label, devname);
if (!serial_hds[i]) {
fprintf(stderr, "qemu: could not open serial device
''%s''\n",
devname);
@@ -10088,7 +10118,9 @@
for(i = 0; i < MAX_PARALLEL_PORTS; i++) {
const char *devname = parallel_devices[i];
if (devname && strcmp(devname, "none")) {
- parallel_hds[i] = qemu_chr_open(devname);
+ char label[32];
+ snprintf(label, sizeof(label), "parallel%d", i);
+ parallel_hds[i] = qemu_chr_open(label, devname);
if (!parallel_hds[i]) {
fprintf(stderr, "qemu: could not open parallel device
''%s''\n",
devname);
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