On 2011年12月14日 21:16, Osier Yang wrote:
> An simple example to show to use it:
s/An/a/, s/to/how to/
>
> \#! /usr/bin/python
>
> import os
> import sys
> import libvirt
>
> disk = "/var/lib/libvirt/images/test.img"
>
> conn = libvirt.open(None)
> dom = conn.lookupByName('test')
>
> mem_contents = dom.memoryPeek(0, 128, libvirt.VIR_MEMORY_VIRTUAL);
s/128/32/, :(
> sys.stdout.write(mem_contents)
>
> % python test.py | hexdump
> 0000000 1660 0209 0000 0000 0000 0000 0000 0000
> 0000010 0000 0000 0000 0000 d3a0 01d0 0000 0000
> 0000020
> ---
> python/generator.py | 1 +
> python/libvirt-override-api.xml | 17 +++++++++
> python/libvirt-override.c | 75 +++++++++++++++++++++++++++++++++++++++
> 3 files changed, 93 insertions(+), 0 deletions(-)
>
> diff --git a/python/generator.py b/python/generator.py
> index 88c52b9..1657f4f 100755
> --- a/python/generator.py
> +++ b/python/generator.py
> @@ -262,6 +262,7 @@ py_types = {
> 'unsigned char *': ('z', None, "charPtr", "char *"),
> 'char *': ('z', None, "charPtr", "char *"),
> 'const char *': ('z', None, "charPtrConst", "const char *"),
> + 'size_t': ('n', None, "size_t", "size_t"),
>
> 'virDomainPtr': ('O', "virDomain", "virDomainPtr", "virDomainPtr"),
> 'const virDomainPtr': ('O', "virDomain", "virDomainPtr", "virDomainPtr"),
> diff --git a/python/libvirt-override-api.xml b/python/libvirt-override-api.xml
> index 7c18763..2e0c7cb 100644
> --- a/python/libvirt-override-api.xml
> +++ b/python/libvirt-override-api.xml
> @@ -405,5 +405,22 @@
> <arg name='flags' type='unsigned int' info='an OR'ed set of virDomainModificationImpact'/>
> <return type='int' info='0 in case of success, -1 in case of failure'/>
> </function>
> +<function name='virDomainBlockPeek' file='python'>
> +<info>Read the contents of domain's disk device</info>
> +<arg name='dom' type='virDomainPtr' info='pointer to the domain'/>
> +<arg name='disk' type='const char *' info='disk name'/>
> +<arg name='offset' type='unsigned long long' info='offset within block device'/>
> +<arg name='size' type='size_t' info='size to read'/>
> +<arg name='flags' type='unsigned int' info='unused, always passed 0'/>
> +<return type='char *' info='the returned buffer or None in case of error'/>
> +</function>
> +<function name='virDomainMemoryPeek' file='python'>
> +<info>Read the contents of domain's memory</info>
> +<arg name='dom' type='virDomainPtr' info='pointer to the domain'/>
> +<arg name='start' type='unsigned long long' info='start of memory to peek'/>
> +<arg name='size' type='size_t' info='size of memory to peek'/>
> +<arg name='flags' type='unsigned int' info='an OR'ed set of virDomainMemoryFlags'/>
> +<return type='char *' info='the returned buffer or None in case of error'/>
> +</function>
> </symbols>
> </api>
> diff --git a/python/libvirt-override.c b/python/libvirt-override.c
> index 9e98918..64d7943 100644
> --- a/python/libvirt-override.c
> +++ b/python/libvirt-override.c
> @@ -5017,6 +5017,79 @@ libvirt_virDomainMigrateGetMaxSpeed(PyObject *self ATTRIBUTE_UNUSED, PyObject *a
> return(py_retval);
> }
>
> +static PyObject *
> +libvirt_virDomainBlockPeek(PyObject *self ATTRIBUTE_UNUSED,
> + PyObject *args) {
> + PyObject *py_retval = NULL;
> + int c_retval;
> + virDomainPtr domain;
> + PyObject *pyobj_domain;
> + const char *disk;
> + unsigned long long offset;
> + size_t size;
> + char *buf;
> + unsigned int flags;
> +
> + if (!PyArg_ParseTuple(args, (char *)"OzLni:virDomainBlockPeek",&pyobj_domain,
> +&disk,&offset,&size,&flags))
> + return(NULL);
> +
> + domain = (virDomainPtr) PyvirDomain_Get(pyobj_domain);
> +
> + if ((buf = malloc(size)) == NULL)
> + return VIR_PY_NONE;
> +
> + LIBVIRT_BEGIN_ALLOW_THREADS;
> + c_retval = virDomainBlockPeek(domain, disk, offset, size, buf, flags);
> + LIBVIRT_END_ALLOW_THREADS;
> +
> + if (c_retval< 0)
> + goto cleanup;
> +
> + py_retval = PyString_FromStringAndSize(buf, size);
> +
> +cleanup:
> + memset(buf, 0, size);
> + free(buf);
> + return py_retval;
> +}
> +
> +static PyObject *
> +libvirt_virDomainMemoryPeek(PyObject *self ATTRIBUTE_UNUSED,
> + PyObject *args) {
> + PyObject *py_retval = NULL;
> + int c_retval;
> + virDomainPtr domain;
> + PyObject *pyobj_domain;
> + unsigned long long start;
> + size_t size;
> + char *buf;
> + unsigned int flags;
> +
> + if (!PyArg_ParseTuple(args, (char *)"OLni:virDomainMemoryPeek",&pyobj_domain,
> +&start,&size,&flags))
> + return(NULL);
> +
> + domain = (virDomainPtr) PyvirDomain_Get(pyobj_domain);
> +
> + if ((buf = malloc(size)) == NULL)
> + return VIR_PY_NONE;
> +
> + LIBVIRT_BEGIN_ALLOW_THREADS;
> + c_retval = virDomainMemoryPeek(domain, start, size, buf, flags);
> + LIBVIRT_END_ALLOW_THREADS;
> +
> + if (c_retval< 0)
> + goto cleanup;
> +
> + py_retval = PyString_FromStringAndSize(buf, size);
> +
> +cleanup:
> + memset(buf, 0, size);
> + free(buf);
> + return py_retval;
> +}
> +
> /************************************************************************
> * *
> * The registration stuff *
> @@ -5112,6 +5185,8 @@ static PyMethodDef libvirtMethods[] = {
> {(char *) "virDomainGetBlockIoTune", libvirt_virDomainGetBlockIoTune, METH_VARARGS, NULL},
> {(char *) "virDomainSendKey", libvirt_virDomainSendKey, METH_VARARGS, NULL},
> {(char *) "virDomainMigrateGetMaxSpeed", libvirt_virDomainMigrateGetMaxSpeed, METH_VARARGS, NULL},
> + {(char *) "virDomainBlockPeek", libvirt_virDomainBlockPeek, METH_VARARGS, NULL},
> + {(char *) "virDomainMemoryPeek", libvirt_virDomainMemoryPeek, METH_VARARGS, NULL},
> {NULL, NULL, 0, NULL}
> };
>
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