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[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] Re: [Xen-devel] [PATCH 2 of 4] multiconsole support in xenconsole, xenconsoled and libxl
On Fri, 13 Aug 2010, Stefano Stabellini wrote:
> multiple consoles support in xenconsole, xenconsoled and libxl
>
> This patch implements the new protocol for handling pv consoles and
> emulated serials as described in the document docs/misc/console.txt.
>
> The changes are:
>
> - xenconsoled: do not write the pty under serial in xenstore if
> xenconsoled is handling a consolepath;
>
> - xenconsole: implement support for an explicit console type parameter;
> the parameter can be "pv", to specify that the user wants to
> connect to a pv console, or "serial", to specify that the user wants to
> connect to an emulated serial. If the type parameter hasn't been
> specified be the user, xenconsole tries to guess which type of console
> it has to connect to, defaulting to pv console for pv guests and
> emulated serial for hvm guests.
>
> - xenconsole: use the new xenstore paths;
>
> - libxl: rename libxl_console_constype to libxl_console_consback:
> constype is used to to specify whether qemu or xenconsoled provides the
> backend, so I renamed it to libxl_console_consback to make it more
> obvious that we are talking about backends;
>
> - libxl: add a new libxl_console_constype to specify if the console is
> an emulated serial or a pv console;
>
> - libxl: support the new xenconsole "type" command line parameter;
>
> - libxl: use the "output" node under console in xenstore to tell qemu
> where do we want the output of this pv console to go;
>
> Signed-off-by: Stefano Stabellini <stefano.stabellini@xxxxxxxxxxxxx>
>
this patch didn't apply cleanly to xen-unstable tip: I am appending a
rebased version of the patch with one additional change:
- remove the legacy "serialpath" from xenconsoled altogether
Signed-off-by: Stefano Stabellini <stefano.stabellini@xxxxxxxxxxxxx>
---
diff -r a55625b65336 docs/misc/console.txt
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/docs/misc/console.txt Mon Aug 16 12:32:58 2010 +0100
@@ -0,0 +1,91 @@
+Xen PV Console notes
+------------------------------------------------------------------------
+ Stefano Stabellini
+ stefano.stabellini@xxxxxxxxxxxxx
+
+
+Xen traditionally provided a single pv console to pv guests, storing the
+relevant information in xenstore under /local/domain/$DOMID/console.
+
+Now many years after the introduction of the pv console we have
+multiple pv consoles support for pv and hvm guests; multiple pv
+console backends (qemu and xenconsoled) and emulated serial cards too.
+
+This document tries to describe how the whole system works and how the
+different components interact with each others.
+
+The first PV console path in xenstore remains:
+
+/local/domain/$DOMID/console
+
+the other PV consoles follow the conventional xenstore device path and
+live in:
+
+/local/domain/$DOMID/device/console/$DEVID.
+
+The output of a PV console, whether it should be a file, a pty, a
+socket, or something else, is specified by the toolstack in the xenstore
+node "output", under the relevant console section.
+For example:
+
+# xenstore-read /local/domain/26/device/console/1/output
+pty
+
+The backend chosen for a particular console is specified by the
+toolstack in the "type" node on xenstore, under the relevant console
+section.
+For example:
+
+# xenstore-read /local/domain/26/console/type
+xenconsoled
+
+The supported values are only xenconsoled or ioemu; xenconsoled has
+several limitations: it can only be used for the first PV console and it
+can only have a pty as output.
+
+If the output is a pty, backends write the device name to the "tty" node
+in xenstore under the relevant console path.
+
+Emulated serials are provided by qemu-dm only to hvm guests; the number
+of emulated serials depends on how many "-serial" command line options
+are given to qemu. The output of a serial is specified as argument to
+the -serial command line option to qemu. Qemu writes the tty name to
+xenstore in the following path:
+
+/local/domain/$DOMID/serial/$SERIAL_NUM/tty
+
+
+xenconsole is the tool to connect to a PV console or an emulated serial
+that has a pty as output. Xenconsole takes a domid as parameter plus an
+optional console type (pv for PV consoles or serial for emulated
+serials) and console number. Depending on the type and console
+number, xenconsole will look for the tty node in different xenstore
+paths, as described above. If the user doesn't specify the console type
+xenconsole will try to guess: if the guest is a pv guest it defaults to
+PV console, if the guest is an hvm guest it defaults to emulated serial.
+
+By default xl creates a pv console for hvm guests, plus an emulated
+serial if the user specified 'serial = "pty"' in the VM config file.
+Considering that xenconsole defaults to emulated serials for hvm guests,
+executing xl create -c "domain" causes xenconsole to attach to the
+emulated serial tty. This is most probably what the user wanted because
+currently no bootloaders support xen pv consoles so the only way to
+interact with a bootloader like grub over a console is to use the
+emulated serial.
+However the pv console is still easy to use with Linux PV on HVM guests:
+the user just need to pass "console=hvc0" to the kernel command line and
+then execute "xl console -t pv <domain>" to connect to it.
+
+When using stubdoms the serial cards are still emulated by qemu (this
+time running in the stubdom), the number of serial cards and where the
+output goes is still specified using qemu command line options.
+The difference is that for each emulated serial card there must be a pv
+console connection between the stubdom and dom0 to export the serial
+output from the stubdom to dom0. The pv console backend for stubdom's pv
+consoles is always ioemu because multiple pv consoles support is a
+requirement in this case, considering that minios has its own pv console
+too. In order to simplify the setup when using stubdoms the hvm guest
+can only have one pv console with xenstored as backend (the stubdom
+could provide pv console backends to the hvm guest but then it would
+need another pv console connection for each console backend to export
+the pty to dom0).
diff -r a55625b65336 tools/console/client/main.c
--- a/tools/console/client/main.c Mon Aug 16 09:54:02 2010 +0100
+++ b/tools/console/client/main.c Mon Aug 16 12:32:58 2010 +0100
@@ -40,6 +40,7 @@
#endif
#include "xs.h"
+#include "xenctrl.h"
#define ESCAPE_CHARACTER 0x1d
@@ -254,6 +255,12 @@ static int console_loop(int fd, struct x
return 0;
}
+typedef enum {
+ CONSOLE_INVAL,
+ CONSOLE_PV,
+ CONSOLE_SERIAL,
+} console_type;
+
int main(int argc, char **argv)
{
struct termios attr;
@@ -263,6 +270,7 @@ int main(int argc, char **argv)
unsigned int num = 0;
int opt_ind=0;
struct option lopt[] = {
+ { "type", 1, 0, 't' },
{ "num", 1, 0, 'n' },
{ "help", 0, 0, 'h' },
{ 0 },
@@ -272,6 +280,7 @@ int main(int argc, char **argv)
int spty, xsfd;
struct xs_handle *xs;
char *end;
+ console_type type = CONSOLE_INVAL;
while((ch = getopt_long(argc, argv, sopt, lopt, &opt_ind)) != -1) {
switch(ch) {
@@ -282,6 +291,17 @@ int main(int argc, char **argv)
case 'n':
num = atoi(optarg);
break;
+ case 't':
+ if (!strcmp(optarg, "serial"))
+ type = CONSOLE_SERIAL;
+ else if (!strcmp(optarg, "pv"))
+ type = CONSOLE_PV;
+ else {
+ fprintf(stderr, "Invalid type argument\n");
+ fprintf(stderr, "Console types supported are:
serial, pv\n");
+ exit(EINVAL);
+ }
+ break;
default:
fprintf(stderr, "Invalid argument\n");
fprintf(stderr, "Try `%s --help' for more
information.\n",
@@ -314,10 +334,30 @@ int main(int argc, char **argv)
dom_path = xs_get_domain_path(xs, domid);
if (dom_path == NULL)
err(errno, "xs_get_domain_path()");
- path = malloc(strlen(dom_path) + strlen("/serial/0/tty") + 5);
+ if (type == CONSOLE_INVAL) {
+ xc_dominfo_t xcinfo;
+ xc_interface *xc_handle = xc_interface_open(0,0,0);
+ if (xc_handle == NULL)
+ err(errno, "Could not open xc interface");
+ xc_domain_getinfo(xc_handle, domid, 1, &xcinfo);
+ /* default to pv console for pv guests and serial for hvm
guests */
+ if (xcinfo.hvm)
+ type = CONSOLE_SERIAL;
+ else
+ type = CONSOLE_PV;
+ xc_interface_close(xc_handle);
+ }
+ path = malloc(strlen(dom_path) + strlen("/device/console/0/tty") + 5);
if (path == NULL)
err(ENOMEM, "malloc");
- snprintf(path, strlen(dom_path) + strlen("/serial/0/tty") + 5,
"%s/serial/%d/tty", dom_path, num);
+ if (type == CONSOLE_SERIAL)
+ snprintf(path, strlen(dom_path) + strlen("/serial/0/tty") + 5,
"%s/serial/%d/tty", dom_path, num);
+ else {
+ if (num == 0)
+ snprintf(path, strlen(dom_path) +
strlen("/console/tty") + 1, "%s/console/tty", dom_path);
+ else
+ snprintf(path, strlen(dom_path) +
strlen("/device/console/%d/tty") + 5, "%s/device/console/%d/tty", dom_path,
num);
+ }
/* FIXME consoled currently does not assume domain-0 doesn't have a
console which is good when we break domain-0 up. To keep us
diff -r a55625b65336 tools/console/daemon/io.c
--- a/tools/console/daemon/io.c Mon Aug 16 09:54:02 2010 +0100
+++ b/tools/console/daemon/io.c Mon Aug 16 12:32:58 2010 +0100
@@ -87,8 +87,6 @@ struct domain {
struct buffer buffer;
struct domain *next;
char *conspath;
- char *serialpath;
- int use_consolepath;
int ring_ref;
evtchn_port_or_error_t local_port;
evtchn_port_or_error_t remote_port;
@@ -440,20 +438,8 @@ static int domain_create_tty(struct doma
goto out;
}
- if (dom->use_consolepath) {
- success = asprintf(&path, "%s/limit", dom->conspath) !=
- -1;
- if (!success)
- goto out;
- data = xs_read(xs, XBT_NULL, path, &len);
- if (data) {
- dom->buffer.max_capacity = strtoul(data, 0, 0);
- free(data);
- }
- free(path);
- }
-
- success = asprintf(&path, "%s/limit", dom->serialpath) != -1;
+ success = asprintf(&path, "%s/limit", dom->conspath) !=
+ -1;
if (!success)
goto out;
data = xs_read(xs, XBT_NULL, path, &len);
@@ -463,7 +449,7 @@ static int domain_create_tty(struct doma
}
free(path);
- success = asprintf(&path, "%s/tty", dom->serialpath) != -1;
+ success = (asprintf(&path, "%s/tty", dom->conspath) != -1);
if (!success)
goto out;
success = xs_write(xs, XBT_NULL, path, slave, strlen(slave));
@@ -471,16 +457,6 @@ static int domain_create_tty(struct doma
if (!success)
goto out;
- if (dom->use_consolepath) {
- success = (asprintf(&path, "%s/tty", dom->conspath) != -1);
- if (!success)
- goto out;
- success = xs_write(xs, XBT_NULL, path, slave, strlen(slave));
- free(path);
- if (!success)
- goto out;
- }
-
if (fcntl(dom->master_fd, F_SETFL, O_NONBLOCK) == -1)
goto out;
@@ -524,29 +500,20 @@ static int xs_gather(struct xs_handle *x
va_end(ap);
return ret;
}
-
+
static int domain_create_ring(struct domain *dom)
{
int err, remote_port, ring_ref, rc;
char *type, path[PATH_MAX];
- err = xs_gather(xs, dom->serialpath,
+ err = xs_gather(xs, dom->conspath,
"ring-ref", "%u", &ring_ref,
"port", "%i", &remote_port,
NULL);
- if (err) {
- err = xs_gather(xs, dom->conspath,
- "ring-ref", "%u", &ring_ref,
- "port", "%i", &remote_port,
- NULL);
- if (err)
- goto out;
- dom->use_consolepath = 1;
- } else
- dom->use_consolepath = 0;
+ if (err)
+ goto out;
- snprintf(path, sizeof(path), "%s/type",
- dom->use_consolepath ? dom->conspath: dom->serialpath);
+ snprintf(path, sizeof(path), "%s/type", dom->conspath);
type = xs_read(xs, XBT_NULL, path, NULL);
if (type && strcmp(type, "xenconsoled") != 0) {
free(type);
@@ -628,16 +595,12 @@ static bool watch_domain(struct domain *
snprintf(domid_str, sizeof(domid_str), "dom%u", dom->domid);
if (watch) {
- success = xs_watch(xs, dom->serialpath, domid_str);
- if (success) {
- success = xs_watch(xs, dom->conspath, domid_str);
- if (success)
- domain_create_ring(dom);
- else
- xs_unwatch(xs, dom->serialpath, domid_str);
- }
+ success = xs_watch(xs, dom->conspath, domid_str);
+ if (success)
+ domain_create_ring(dom);
+ else
+ xs_unwatch(xs, dom->conspath, domid_str);
} else {
- success = xs_unwatch(xs, dom->serialpath, domid_str);
success = xs_unwatch(xs, dom->conspath, domid_str);
}
@@ -666,14 +629,6 @@ static struct domain *create_domain(int
dom->domid = domid;
- dom->serialpath = xs_get_domain_path(xs, dom->domid);
- s = realloc(dom->serialpath, strlen(dom->serialpath) +
- strlen("/serial/0") + 1);
- if (s == NULL)
- goto out;
- dom->serialpath = s;
- strcat(dom->serialpath, "/serial/0");
-
dom->conspath = xs_get_domain_path(xs, dom->domid);
s = realloc(dom->conspath, strlen(dom->conspath) +
strlen("/console") + 1);
@@ -712,7 +667,6 @@ static struct domain *create_domain(int
return dom;
out:
- free(dom->serialpath);
free(dom->conspath);
free(dom);
return NULL;
@@ -755,9 +709,6 @@ static void cleanup_domain(struct domain
free(d->buffer.data);
d->buffer.data = NULL;
- free(d->serialpath);
- d->serialpath = NULL;
-
free(d->conspath);
d->conspath = NULL;
diff -r a55625b65336 tools/libxl/libxl.c
--- a/tools/libxl/libxl.c Mon Aug 16 09:54:02 2010 +0100
+++ b/tools/libxl/libxl.c Mon Aug 16 12:32:58 2010 +0100
@@ -952,13 +952,20 @@ out:
return 0;
}
-int libxl_console_exec(libxl_ctx *ctx, uint32_t domid, int cons_num)
+int libxl_console_exec(libxl_ctx *ctx, uint32_t domid, int cons_num,
libxl_console_constype type)
{
libxl_gc gc = LIBXL_INIT_GC(ctx);
char *p = libxl_sprintf(&gc, "%s/xenconsole", libxl_private_bindir_path());
char *domid_s = libxl_sprintf(&gc, "%d", domid);
char *cons_num_s = libxl_sprintf(&gc, "%d", cons_num);
- execl(p, p, domid_s, "--num", cons_num_s, (void *)NULL);
+ char *cons_type_s;
+
+ if (type == LIBXL_CONSTYPE_PV)
+ cons_type_s = "pv";
+ else
+ cons_type_s = "serial";
+
+ execl(p, p, domid_s, "--num", cons_num_s, "--type", cons_type_s, (void
*)NULL);
libxl_free_all(&gc);
return ERROR_FAIL;
}
@@ -967,9 +974,13 @@ int libxl_primary_console_exec(libxl_ctx
{
uint32_t stubdomid = libxl_get_stubdom_id(ctx, domid_vm);
if (stubdomid)
- return libxl_console_exec(ctx, stubdomid, 1);
- else
- return libxl_console_exec(ctx, domid_vm, 0);
+ return libxl_console_exec(ctx, stubdomid, 1, LIBXL_CONSTYPE_PV);
+ else {
+ if (is_hvm(ctx, domid_vm))
+ return libxl_console_exec(ctx, domid_vm, 0, LIBXL_CONSTYPE_SERIAL);
+ else
+ return libxl_console_exec(ctx, domid_vm, 0, LIBXL_CONSTYPE_PV);
+ }
}
int libxl_vncviewer_exec(libxl_ctx *ctx, uint32_t domid, int autopass)
@@ -1540,15 +1551,22 @@ retry_transaction:
for (i = 0; i < num_console; i++) {
console[i].devid = i;
- console[i].constype = CONSTYPE_IOEMU;
+ console[i].consback = LIBXL_CONSBACK_IOEMU;
console[i].domid = domid;
- if (!i)
+ if (!i) {
+ char *filename;
+ char *name = libxl_sprintf(&gc, "qemu-dm-%s",
libxl_domid_to_name(ctx, info->domid));
+ libxl_create_logfile(ctx, name, &filename);
+ console[i].output = libxl_sprintf(&gc, "file:%s", filename);
console[i].build_state = &state;
+ free(filename);
+ } else
+ console[i].output = "pty";
ret = libxl_device_console_add(ctx, domid, &console[i]);
if (ret)
goto out_free;
}
- if (libxl_create_xenpv_qemu(ctx, vfb, num_console, console, &dm_starting)
< 0) {
+ if (libxl_create_xenpv_qemu(ctx, domid, vfb, &dm_starting) < 0) {
ret = ERROR_FAIL;
goto out_free;
}
@@ -2290,7 +2308,7 @@ int libxl_device_console_add(libxl_ctx *
if (console->build_state) {
xs_transaction_t t;
- char **ents = (char **) libxl_calloc(&gc, 9, sizeof(char *));
+ char **ents = (char **) libxl_calloc(&gc, 11, sizeof(char *));
ents[0] = "console/port";
ents[1] = libxl_sprintf(&gc, "%"PRIu32,
console->build_state->console_port);
ents[2] = "console/ring-ref";
@@ -2298,10 +2316,12 @@ int libxl_device_console_add(libxl_ctx *
ents[4] = "console/limit";
ents[5] = libxl_sprintf(&gc, "%d", LIBXL_XENCONSOLE_LIMIT);
ents[6] = "console/type";
- if (console->constype == CONSTYPE_XENCONSOLED)
+ if (console->consback == LIBXL_CONSBACK_XENCONSOLED)
ents[7] = "xenconsoled";
else
ents[7] = "ioemu";
+ ents[8] = "console/output";
+ ents[9] = console->output;
retry_transaction:
t = xs_transaction_start(ctx->xsh);
libxl_xs_writev(&gc, t, libxl_xs_get_dompath(&gc, console->domid),
ents);
@@ -2339,19 +2359,25 @@ retry_transaction:
flexarray_set(back, boffset++, "protocol");
flexarray_set(back, boffset++, LIBXL_XENCONSOLE_PROTOCOL);
- flexarray_set(front, foffset++, "backend-id");
- flexarray_set(front, foffset++, libxl_sprintf(&gc, "%d",
console->backend_domid));
- flexarray_set(front, foffset++, "state");
- flexarray_set(front, foffset++, libxl_sprintf(&gc, "%d", 1));
- flexarray_set(front, foffset++, "limit");
- flexarray_set(front, foffset++, libxl_sprintf(&gc, "%d",
LIBXL_XENCONSOLE_LIMIT));
- flexarray_set(front, foffset++, "protocol");
- flexarray_set(front, foffset++, LIBXL_XENCONSOLE_PROTOCOL);
- flexarray_set(front, foffset++, "type");
- if (console->constype == CONSTYPE_XENCONSOLED)
- flexarray_set(front, foffset++, "xenconsoled");
- else
- flexarray_set(front, foffset++, "ioemu");
+ /* if devid == 0 do not add the frontend to device/console/ because
+ * it has already been added to console/ */
+ if (device.devid > 0) {
+ flexarray_set(front, foffset++, "backend-id");
+ flexarray_set(front, foffset++, libxl_sprintf(&gc, "%d",
console->backend_domid));
+ flexarray_set(front, foffset++, "state");
+ flexarray_set(front, foffset++, libxl_sprintf(&gc, "%d", 1));
+ flexarray_set(front, foffset++, "limit");
+ flexarray_set(front, foffset++, libxl_sprintf(&gc, "%d",
LIBXL_XENCONSOLE_LIMIT));
+ flexarray_set(front, foffset++, "protocol");
+ flexarray_set(front, foffset++, LIBXL_XENCONSOLE_PROTOCOL);
+ flexarray_set(front, foffset++, "type");
+ if (console->consback == LIBXL_CONSBACK_XENCONSOLED)
+ flexarray_set(front, foffset++, "xenconsoled");
+ else
+ flexarray_set(front, foffset++, "ioemu");
+ flexarray_set(front, foffset++, "output");
+ flexarray_set(front, foffset++, console->output);
+ }
libxl_device_generic_add(ctx, &device,
libxl_xs_kvs_of_flexarray(&gc, back, boffset),
@@ -2559,13 +2585,11 @@ int libxl_cdrom_insert(libxl_ctx *ctx, u
/******************************************************************************/
static int libxl_build_xenpv_qemu_args(libxl_gc *gc,
+ uint32_t domid,
libxl_device_vfb *vfb,
- int num_console,
- libxl_device_console *console,
libxl_device_model_info *info)
{
libxl_ctx *ctx = libxl_gc_owner(gc);
- int i = 0, j = 0, num = 0;
memset(info, 0x00, sizeof(libxl_device_model_info));
info->vnc = vfb->vnc;
@@ -2579,46 +2603,20 @@ static int libxl_build_xenpv_qemu_args(l
info->keymap = libxl_strdup(gc, vfb->keymap);
info->sdl = vfb->sdl;
info->opengl = vfb->opengl;
- for (i = 0; i < num_console; i++) {
- if (console->constype == CONSTYPE_IOEMU)
- num++;
- }
- if (num > 0) {
- uint32_t guest_domid;
- if (libxl_is_stubdom(ctx, vfb->domid, &guest_domid)) {
- char *filename;
- char *name = libxl_sprintf(gc, "qemu-dm-%s",
_libxl_domid_to_name(gc, guest_domid));
- libxl_create_logfile(ctx, name, &filename);
- info->serial = libxl_sprintf(gc, "file:%s", filename);
- free(filename);
- } else {
- info->serial = "pty";
- }
- num--;
- }
- if (num > 0) {
- info->extra = (char **) libxl_calloc(gc, num * 2 + 1, sizeof(char *));
- for (j = 0; j < num * 2; j = j + 2) {
- info->extra[j] = "-serial";
- info->extra[j + 1] = "pty";
- }
- info->extra[j] = NULL;
- }
- info->domid = vfb->domid;
- info->dom_name = _libxl_domid_to_name(gc, vfb->domid);
+ info->domid = domid;
+ info->dom_name = libxl_domid_to_name(ctx, domid);
info->device_model = libxl_abs_path(gc, "qemu-dm", libxl_libexec_path());
info->type = XENPV;
return 0;
}
-int libxl_create_xenpv_qemu(libxl_ctx *ctx, libxl_device_vfb *vfb,
- int num_console, libxl_device_console *console,
+int libxl_create_xenpv_qemu(libxl_ctx *ctx, uint32_t domid, libxl_device_vfb
*vfb,
libxl_device_model_starting **starting_r)
{
libxl_gc gc = LIBXL_INIT_GC(ctx);
libxl_device_model_info info;
- libxl_build_xenpv_qemu_args(&gc, vfb, num_console, console, &info);
+ libxl_build_xenpv_qemu_args(&gc, domid, vfb, &info);
libxl_create_device_model(ctx, &info, NULL, 0, NULL, 0, starting_r);
libxl_free_all(&gc);
return 0;
diff -r a55625b65336 tools/libxl/libxl.h
--- a/tools/libxl/libxl.h Mon Aug 16 09:54:02 2010 +0100
+++ b/tools/libxl/libxl.h Mon Aug 16 12:32:58 2010 +0100
@@ -335,16 +335,22 @@ typedef struct {
} libxl_device_vkb;
typedef enum {
- CONSTYPE_XENCONSOLED,
- CONSTYPE_IOEMU,
+ LIBXL_CONSTYPE_SERIAL,
+ LIBXL_CONSTYPE_PV,
} libxl_console_constype;
+typedef enum {
+ LIBXL_CONSBACK_XENCONSOLED,
+ LIBXL_CONSBACK_IOEMU,
+} libxl_console_consback;
+
typedef struct {
uint32_t backend_domid;
uint32_t domid;
int devid;
- libxl_console_constype constype;
+ libxl_console_consback consback;
libxl_domain_build_state *build_state;
+ char *output;
} libxl_device_console;
typedef enum {
@@ -542,7 +548,7 @@ int libxl_domain_setmaxmem(libxl_ctx *ct
int libxl_set_memory_target(libxl_ctx *ctx, uint32_t domid, uint32_t
target_memkb, int enforce);
int libxl_vncviewer_exec(libxl_ctx *ctx, uint32_t domid, int autopass);
-int libxl_console_exec(libxl_ctx *ctx, uint32_t domid, int cons_num);
+int libxl_console_exec(libxl_ctx *ctx, uint32_t domid, int cons_num,
libxl_console_constype type);
/* libxl_primary_console_exec finds the domid and console number
* corresponding to the primary console of the given vm, then calls
* libxl_console_exec with the right arguments (domid might be different
@@ -564,8 +570,7 @@ int libxl_create_device_model(libxl_ctx
libxl_device_disk *disk, int num_disks,
libxl_device_nic *vifs, int num_vifs,
libxl_device_model_starting **starting_r);
-int libxl_create_xenpv_qemu(libxl_ctx *ctx, libxl_device_vfb *vfb,
- int num_console, libxl_device_console *console,
+int libxl_create_xenpv_qemu(libxl_ctx *ctx, uint32_t domid, libxl_device_vfb
*vfb,
libxl_device_model_starting **starting_r);
/* Caller must either: pass starting_r==0, or on successful
* return pass *starting_r (which will be non-0) to
diff -r a55625b65336 tools/libxl/xl_cmdimpl.c
--- a/tools/libxl/xl_cmdimpl.c Mon Aug 16 09:54:02 2010 +0100
+++ b/tools/libxl/xl_cmdimpl.c Mon Aug 16 12:32:58 2010 +0100
@@ -371,7 +371,8 @@ static void init_console_info(libxl_devi
{
memset(console, 0x00, sizeof(libxl_device_console));
console->devid = dev_num;
- console->constype = CONSTYPE_XENCONSOLED;
+ console->consback = LIBXL_CONSBACK_XENCONSOLED;
+ console->output = "pty";
if (state)
console->build_state = state;
}
@@ -1457,10 +1458,10 @@ start:
init_console_info(&console, 0, &state);
console.domid = domid;
if (d_config.num_vfbs)
- console.constype = CONSTYPE_IOEMU;
+ console.consback = LIBXL_CONSBACK_IOEMU;
libxl_device_console_add(&ctx, domid, &console);
if (d_config.num_vfbs)
- libxl_create_xenpv_qemu(&ctx, d_config.vfbs, 1, &console,
&dm_starting);
+ libxl_create_xenpv_qemu(&ctx, domid, d_config.vfbs, &dm_starting);
}
if (dm_starting)
@@ -1855,13 +1856,27 @@ int main_cd_insert(int argc, char **argv
int main_console(int argc, char **argv)
{
- int opt = 0;
-
- while ((opt = getopt(argc, argv, "hn:")) != -1) {
+ int opt = 0, num = 0;
+ libxl_console_constype type = -1;
+
+ while ((opt = getopt(argc, argv, "hn:t:")) != -1) {
switch (opt) {
case 'h':
help("console");
return 0;
+ case 't':
+ if (!strcmp(optarg, "pv"))
+ type = LIBXL_CONSTYPE_PV;
+ else if (!strcmp(optarg, "serial"))
+ type = LIBXL_CONSTYPE_SERIAL;
+ else {
+ fprintf(stderr, "console type supported are: pv, serial\n");
+ return 2;
+ }
+ break;
+ case 'n':
+ num = atoi(optarg);
+ break;
default:
fprintf(stderr, "option not supported\n");
break;
@@ -1873,7 +1888,10 @@ int main_console(int argc, char **argv)
}
find_domain(argv[optind]);
- libxl_primary_console_exec(&ctx, domid);
+ if (type <= 0 && num == 0)
+ libxl_primary_console_exec(&ctx, domid);
+ else
+ libxl_console_exec(&ctx, domid, num, type);
fprintf(stderr, "Unable to attach console\n");
return 1;
}
diff -r a55625b65336 tools/libxl/xl_cmdtable.c
--- a/tools/libxl/xl_cmdtable.c Mon Aug 16 09:54:02 2010 +0100
+++ b/tools/libxl/xl_cmdtable.c Mon Aug 16 12:32:58 2010 +0100
@@ -86,7 +86,9 @@ struct cmd_spec cmd_table[] = {
{ "console",
&main_console,
"Attach to domain's console",
- "<Domain>",
+ "[options] <Domain>\n"
+ "-t <type> console type, pv or serial\n"
+ "-n <number> console number"
},
{ "vncviewer",
&main_vncviewer,
diff -r a55625b65336 tools/ocaml/libs/xl/xl_stubs.c
--- a/tools/ocaml/libs/xl/xl_stubs.c Mon Aug 16 09:54:02 2010 +0100
+++ b/tools/ocaml/libs/xl/xl_stubs.c Mon Aug 16 12:32:58 2010 +0100
@@ -232,7 +232,7 @@ static int device_console_val(caml_gc *g
c_val->backend_domid = Int_val(Field(v, 0));
c_val->devid = Int_val(Field(v, 1));
- c_val->constype = (Int_val(Field(v, 2))) + CONSTYPE_XENCONSOLED;
+ c_val->consback = (Int_val(Field(v, 2))) + LIBXL_CONSBACK_XENCONSOLED;
CAMLreturn(0);
}
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