# HG changeset patch
# User kfraser@xxxxxxxxxxxxxxxxxxxxx
# Date 1173438719 0
# Node ID 7ab04fa25d527e741e06910381ec576026770be9
# Parent a67d3fbd4577ae1c0294ae782c43b519fad4c6ae
xm: New command 'debug-keys' to inject debug-key events into Xen.
Signed-off-by: Keir Fraser <keir@xxxxxxxxxxxxx>
---
tools/libxc/xc_misc.c | 19 +++++++++++++++++++
tools/libxc/xenctrl.h | 2 ++
tools/python/xen/lowlevel/xc/xc.c | 24 ++++++++++++++++++++++++
tools/python/xen/xend/XendNode.py | 6 ++++++
tools/python/xen/xend/server/XMLRPCServer.py | 2 +-
tools/python/xen/xm/main.py | 8 +++++++-
xen/common/keyhandler.c | 2 +-
xen/common/sysctl.c | 15 +++++++++++++++
xen/include/public/sysctl.h | 13 +++++++++++++
9 files changed, 88 insertions(+), 3 deletions(-)
diff -r a67d3fbd4577 -r 7ab04fa25d52 tools/libxc/xc_misc.c
--- a/tools/libxc/xc_misc.c Fri Mar 09 09:21:31 2007 +0000
+++ b/tools/libxc/xc_misc.c Fri Mar 09 11:11:59 2007 +0000
@@ -29,6 +29,25 @@ int xc_readconsolering(int xc_handle,
*pnr_chars = sysctl.u.readconsole.count;
unlock_pages(buffer, nr_chars);
+
+ return ret;
+}
+
+int xc_send_debug_keys(int xc_handle, char *keys)
+{
+ int ret, len = strlen(keys);
+ DECLARE_SYSCTL;
+
+ sysctl.cmd = XEN_SYSCTL_debug_keys;
+ set_xen_guest_handle(sysctl.u.debug_keys.keys, keys);
+ sysctl.u.debug_keys.nr_keys = len;
+
+ if ( (ret = lock_pages(keys, len)) != 0 )
+ return ret;
+
+ ret = do_sysctl(xc_handle, &sysctl);
+
+ unlock_pages(keys, len);
return ret;
}
diff -r a67d3fbd4577 -r 7ab04fa25d52 tools/libxc/xenctrl.h
--- a/tools/libxc/xenctrl.h Fri Mar 09 09:21:31 2007 +0000
+++ b/tools/libxc/xenctrl.h Fri Mar 09 11:11:59 2007 +0000
@@ -467,6 +467,8 @@ int xc_readconsolering(int xc_handle,
unsigned int *pnr_chars,
int clear);
+int xc_send_debug_keys(int xc_handle, char *keys);
+
typedef xen_sysctl_physinfo_t xc_physinfo_t;
int xc_physinfo(int xc_handle,
xc_physinfo_t *info);
diff -r a67d3fbd4577 -r 7ab04fa25d52 tools/python/xen/lowlevel/xc/xc.c
--- a/tools/python/xen/lowlevel/xc/xc.c Fri Mar 09 09:21:31 2007 +0000
+++ b/tools/python/xen/lowlevel/xc/xc.c Fri Mar 09 11:11:59 2007 +0000
@@ -1007,6 +1007,24 @@ static PyObject *pyxc_domain_send_trigge
return zero;
}
+static PyObject *pyxc_send_debug_keys(XcObject *self,
+ PyObject *args,
+ PyObject *kwds)
+{
+ char *keys;
+
+ static char *kwd_list[] = { "keys", NULL };
+
+ if ( !PyArg_ParseTupleAndKeywords(args, kwds, "s", kwd_list, &keys) )
+ return NULL;
+
+ if ( xc_send_debug_keys(self->xc_handle, keys) != 0 )
+ return pyxc_error_to_exception();
+
+ Py_INCREF(zero);
+ return zero;
+}
+
static PyObject *dom_op(XcObject *self, PyObject *args,
int (*fn)(int, uint32_t))
{
@@ -1419,6 +1437,12 @@ static PyMethodDef pyxc_methods[] = {
" trigger [int]: Trigger type number.\n"
" vcpu [int]: VCPU to be sent trigger.\n"
"Returns: [int] 0 on success; -1 on error.\n" },
+
+ { "send_debug_keys",
+ (PyCFunction)pyxc_send_debug_keys,
+ METH_VARARGS | METH_KEYWORDS, "\n"
+ "Inject debug keys into Xen.\n"
+ " keys [str]: String of keys to inject.\n" },
#ifdef __powerpc__
{ "arch_alloc_real_mode_area",
diff -r a67d3fbd4577 -r 7ab04fa25d52 tools/python/xen/xend/XendNode.py
--- a/tools/python/xen/xend/XendNode.py Fri Mar 09 09:21:31 2007 +0000
+++ b/tools/python/xen/xend/XendNode.py Fri Mar 09 11:11:59 2007 +0000
@@ -453,6 +453,12 @@ class XendNode:
return pif.network
raise Exception('Bridge %s is not connected to a network' % bridge)
+ #
+ # Debug keys.
+ #
+
+ def send_debug_keys(self, keys):
+ return self.xc.send_debug_keys(keys)
#
# Getting host information.
diff -r a67d3fbd4577 -r 7ab04fa25d52
tools/python/xen/xend/server/XMLRPCServer.py
--- a/tools/python/xen/xend/server/XMLRPCServer.py Fri Mar 09 09:21:31
2007 +0000
+++ b/tools/python/xen/xend/server/XMLRPCServer.py Fri Mar 09 11:11:59
2007 +0000
@@ -157,7 +157,7 @@ class XMLRPCServer:
self.server.register_function(fn, "xend.domain.%s" %
name[7:])
# Functions in XendNode and XendDmesg
- for type, lst, n in [(XendNode, ['info'], 'node'),
+ for type, lst, n in [(XendNode, ['info', 'send_debug_keys'], 'node'),
(XendDmesg, ['info', 'clear'], 'node.dmesg')]:
inst = type.instance()
for name in lst:
diff -r a67d3fbd4577 -r 7ab04fa25d52 tools/python/xen/xm/main.py
--- a/tools/python/xen/xm/main.py Fri Mar 09 09:21:31 2007 +0000
+++ b/tools/python/xen/xm/main.py Fri Mar 09 11:11:59 2007 +0000
@@ -133,6 +133,7 @@ SUBCOMMAND_HELP = {
'sched-credit': ('[-d <Domain> [-w[=WEIGHT]|-c[=CAP]]]',
'Get/set credit scheduler parameters.'),
'sysrq' : ('<Domain> <letter>', 'Send a sysrq to a domain.'),
+ 'debug-keys' : ('<Keys>', 'Send debug keys to Xen.'),
'trigger' : ('<Domain> <nmi|reset|init> [<VCPU>]',
'Send a trigger to a domain.'),
'vcpu-list' : ('[<Domain>]',
@@ -260,7 +261,6 @@ common_commands = [
"shutdown",
"start",
"suspend",
- "trigger",
"top",
"unpause",
"uptime",
@@ -300,6 +300,7 @@ domain_commands = [
]
host_commands = [
+ "debug-keys",
"dmesg",
"info",
"log",
@@ -1394,6 +1395,10 @@ def xm_trigger(args):
vcpu = int(args[2])
server.xend.domain.send_trigger(dom, trigger, vcpu)
+
+def xm_debug_keys(args):
+ arg_check(args, "debug-keys", 1)
+ server.xend.node.send_debug_keys(str(args[0]))
def xm_top(args):
arg_check(args, "top", 0)
@@ -1738,6 +1743,7 @@ commands = {
"pause": xm_pause,
"unpause": xm_unpause,
# host commands
+ "debug-keys": xm_debug_keys,
"dmesg": xm_dmesg,
"info": xm_info,
"log": xm_log,
diff -r a67d3fbd4577 -r 7ab04fa25d52 xen/common/keyhandler.c
--- a/xen/common/keyhandler.c Fri Mar 09 09:21:31 2007 +0000
+++ b/xen/common/keyhandler.c Fri Mar 09 11:11:59 2007 +0000
@@ -47,7 +47,7 @@ void handle_keypress(unsigned char key,
{
irq_keyhandler_t *h;
- if ( key_table[key].flags & KEYHANDLER_IRQ_CALLBACK )
+ if ( !in_irq() || (key_table[key].flags & KEYHANDLER_IRQ_CALLBACK) )
{
console_start_log_everything();
if ( (h = key_table[key].u.irq_handler) != NULL )
diff -r a67d3fbd4577 -r 7ab04fa25d52 xen/common/sysctl.c
--- a/xen/common/sysctl.c Fri Mar 09 09:21:31 2007 +0000
+++ b/xen/common/sysctl.c Fri Mar 09 11:11:59 2007 +0000
@@ -18,6 +18,7 @@
#include <xen/console.h>
#include <xen/iocap.h>
#include <xen/guest_access.h>
+#include <xen/keyhandler.h>
#include <asm/current.h>
#include <public/sysctl.h>
@@ -121,6 +122,20 @@ long do_sysctl(XEN_GUEST_HANDLE(xen_sysc
break;
#endif
+ case XEN_SYSCTL_debug_keys:
+ {
+ char c;
+ uint32_t i;
+
+ for ( i = 0; i < op->u.debug_keys.nr_keys; i++ )
+ {
+ if ( copy_from_guest_offset(&c, op->u.debug_keys.keys, i, 1) )
+ return -EFAULT;
+ handle_keypress(c, guest_cpu_user_regs());
+ }
+ }
+ break;
+
default:
ret = arch_do_sysctl(op, u_sysctl);
break;
diff -r a67d3fbd4577 -r 7ab04fa25d52 xen/include/public/sysctl.h
--- a/xen/include/public/sysctl.h Fri Mar 09 09:21:31 2007 +0000
+++ b/xen/include/public/sysctl.h Fri Mar 09 11:11:59 2007 +0000
@@ -140,6 +140,18 @@ typedef struct xen_sysctl_getdomaininfol
typedef struct xen_sysctl_getdomaininfolist xen_sysctl_getdomaininfolist_t;
DEFINE_XEN_GUEST_HANDLE(xen_sysctl_getdomaininfolist_t);
+/*
+ * Inject debug keys into Xen.
+ */
+#define XEN_SYSCTL_debug_keys 7
+struct xen_sysctl_debug_keys {
+ /* IN variables. */
+ XEN_GUEST_HANDLE_64(char) keys;
+ uint32_t nr_keys;
+};
+typedef struct xen_sysctl_debug_keys xen_sysctl_debug_keys_t;
+DEFINE_XEN_GUEST_HANDLE(xen_sysctl_debug_keys_t);
+
struct xen_sysctl {
uint32_t cmd;
uint32_t interface_version; /* XEN_SYSCTL_INTERFACE_VERSION */
@@ -150,6 +162,7 @@ struct xen_sysctl {
struct xen_sysctl_sched_id sched_id;
struct xen_sysctl_perfc_op perfc_op;
struct xen_sysctl_getdomaininfolist getdomaininfolist;
+ struct xen_sysctl_debug_keys debug_keys;
uint8_t pad[128];
} u;
};
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