linux-kernel - Re: [PATCH 1/1] Drivers: hv: Add a new driver to support host initiated backup

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Message-ID: <20130314092952.GA29201@aepfle.de>
Date:	Thu, 14 Mar 2013 10:29:52 +0100
From:	Olaf Hering <olaf@...fle.de>
To:	"K. Y. Srinivasan" <kys@...rosoft.com>
Cc:	gregkh@...uxfoundation.org, linux-kernel@...r.kernel.org,
	devel@...uxdriverproject.org, apw@...onical.com,
	jasowang@...hat.com, Evgeniy Polyakov <zbr@...emap.net>
Subject: Re: [PATCH 1/1] Drivers: hv: Add a new driver to support host
 initiated backup

On Tue, Mar 12, Olaf Hering wrote:

> On Tue, Mar 12, K. Y. Srinivasan wrote:
> 
> > +static int vss_operate(int operation)
> > +{
> > +	char *fs_op;
> > +	char cmd[512];
> > +	char buf[512];
> > +	FILE *file;
> > +	char *p;
> > +	char *x;
> > +	int error;
> > +
> > +	switch (operation) {
> > +	case VSS_OP_FREEZE:
> > +		fs_op = "-f ";
> > +		break;
> > +	case VSS_OP_THAW:
> > +		fs_op = "-u ";
> > +		break;
> > +	}
> > +
> > +	sprintf(cmd, "%s", "mount | grep ^/dev/ | awk '{print $3 }'");
> 
> I think this can be char cmd[] = "mount | awk '/^\/dev\/ { print $3'";

After thinking about this part, perhaps start a helper script which has
to provide as output the list of the mounted filesystems?

Olaf
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