[Dovecot] 1.0 roadmap - fs quota problem

[Miquel van Smoorenburg]

On Mon, 2006-06-12 at 18:39 +0300, Timo Sirainen wrote:
> On Mon, 2006-06-12 at 17:56 +0300, Dumitru Negara wrote:
> > Timo Sirainen wrote:
> > > On Mon, 2006-06-12 at 17:12 +0300, Dumitru Negara wrote:
> > >> # repquota -u /dev/sda9
> > >
> > > Could you run it through strace and show me the quotactl() call it does?
> > > Or does it do a quotactl() call at all?
> 
> So I looked through repquota's sources and it looks like XFS has its own
> Q_XGETQSTAT quota command which needs to be used with it. I think I'm
> not going to bother figuring out how it's supposed to be used. Patches
> welcome.

It's not that hard. Here's some example code:

#include <sys/quota.h>
#include <xfs/xqm.h>

#define FS_WHATEVER     0
#define FS_XFS          1

int getquot(char *dev, uid_t uid, struct dqblk *dq, int fstype)
{
        fs_disk_quota_t         fdq;

        switch(fstype) {
                case FS_XFS:
                        if (quotactl(QCMD(Q_XGETQUOTA, USRQUOTA),
                            dev, uid, (caddr_t)&fdq) < 0)
                                return -1;
                        dq->dqb_bhardlimit = fdq.d_blk_hardlimit;
                        dq->dqb_bsoftlimit = fdq.d_blk_softlimit;
                        dq->dqb_ihardlimit = fdq.d_ino_hardlimit;
                        dq->dqb_isoftlimit = fdq.d_ino_softlimit;
                        dq->dqb_curblocks  = fdq.d_bcount;
                        dq->dqb_curinodes  = fdq.d_icount;
                        dq->dqb_btime      = fdq.d_btimer;
                        dq->dqb_itime      = fdq.d_itimer;
                        break;
                default:
                        if (quotactl(QCMD(Q_GETQUOTA, USRQUOTA),
                            dev, uid, (caddr_t)dq) < 0)
                                return -1;
                        break;
        }

        return 0;
}