Re: [Qemu-devel] [PATCH 09/12] qga: guest exec functionality

[Eric Blake <eblake@redhat.com>]

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On 10/14/2015 02:08 PM, Michael Roth wrote:
> From: Yuri Pudgorodskiy <yur@virtuozzo.com>
> 
> Guest-exec rewriten in platform-independant style with glib spawn.

s/rewriten/rewritten/
s/independant/independent/

> 
> Child process is spawn asynchroneously and exit status can later

s/asynchroneously/asynchronously/

> be picked up by guest-exec-status command.
> 
> stdin/stdout/stderr of the child now is redirected to /dev/null
> Later we will add ability to specify stdin in guest-exec command
> and to get collected stdout/stderr with guest-exec-status.
> 
> Signed-off-by: Yuri Pudgorodskiy <yur@virtuozzo.com>
> Signed-off-by: Denis V. Lunev <den@openvz.org>
> CC: Michael Roth <mdroth@linux.vnet.ibm.com>
> *use g_new0 in place of g_malloc for GuestExec struct
> Signed-off-by: Michael Roth <mdroth@linux.vnet.ibm.com>
> ---

> +##
> +# @guest-exec:
> +#
> +# Execute a command in the guest
> +#
> +# @path: path or executable name to execute
> +# @arg: #optional argument list to pass to executable
> +# @env: #optional environment variables to pass to executable
> +# @inp-data: #optional data to be passed to process stdin (base64 encoded)

Should this be 'input-data' instead of abbreviating?

> +# @capture-output: #optional bool flags to enable capture of
> +#                  stdout/stderr of running process

Might be worth mentioning that the default is false.

> +#
> +# Returns: PID on success.
> +#
> +# Since: 2.5
> +##
> +{ 'command': 'guest-exec',
> +  'data':    { 'path': 'str', '*arg': ['str'], '*env': ['str'],
> +               '*inp-data': 'str', '*capture-output': 'bool' },
> +  'returns': 'GuestExec' }

Are there any restrictions on how elements of env must behave, such as
requiring an '='? If so, does that mean we need any more structure than
a raw 'str', such as {'name':'str', 'value':'str'}?  Or is that overkill?

-- 
Eric Blake   eblake redhat com    +1-919-301-3266
Libvirt virtualization library http://libvirt.org


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