On Mon, Apr 08, 2013 at 05:22:38PM +0200, David Sterba wrote:
> > + fd = open("/dev/btrfs-control", O_RDWR);
> > + e = errno;
> > + if (fd < 0) {
> > + FILE *mfd = popen("lsmod | grep btrfs", "r");
> Please transform this into C.
Actually, what if btrfs is not built as a module? There should be another
way to detect that btrfs is compiled in, like opening the control device
and reading something back.
david
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