/*
 * Copyright (c) 1990,1993 Regents of The University of Michigan.
 * All Rights Reserved.  See COPYRIGHT.
 */

#ifdef HAVE_CONFIG_H
#include "config.h"
#endif /* HAVE_CONFIG_H */

#ifndef NO_QUOTA_SUPPORT
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <errno.h>
#include <sys/types.h>
#include <string.h>
#include <sys/stat.h>
#include <sys/time.h>
#include <sys/param.h>
#include <unistd.h>
#ifdef HAVE_FCNTL_H
#include <fcntl.h>
#endif /* HAVE_FCNTL_H */

#if defined(HAVE_SYS_MNTTAB_H) || defined(__svr4__)
#include <sys/mntent.h>
#endif

#include <atalk/logger.h>
#include <atalk/afp.h>
#include <atalk/compat.h>
#include <atalk/util.h>

#include "auth.h"
#include "volume.h"
#include "unix.h"

#ifdef HAVE_LIBQUOTA
#include <quota.h>


static int
getfreespace(struct vol *vol, VolSpace *bfree, VolSpace *btotal,
    id_t id, int idtype)
{
	uid_t prevuid;
	const char *msg;
	struct quotahandle *qh;
	struct quotakey qk;
	struct quotaval qv;
	time_t now;

	if (time(&now) == -1) {
		LOG(log_info, logtype_afpd, "time(): %s",
		    strerror(errno));
		return -1;
	}

	prevuid = geteuid();
	if (prevuid == -1) {
		LOG(log_info, logtype_afpd, "geteuid(): %s",
		    strerror(errno));
		return -1;
	}

	if ( seteuid( getuid() ) != 0 )  {
		LOG(log_info, logtype_afpd, "seteuid(): %s",
		    strerror(errno));
		return -1;
	}

	/*
	 * In a tidier world we might keep the quotahandle open for longer...
	 */
	qh = quota_open(vol->v_path);
	if (qh == NULL) {
		if (errno == EOPNOTSUPP || errno == ENXIO) {
			/* no quotas on this volume */
			seteuid( prevuid );
			return 0;
		}
	   
		LOG(log_info, logtype_afpd, "quota_open(%s): %s", vol->v_path,
		    strerror(errno));
		seteuid( prevuid );
		return -1;
	}

	qk.qk_idtype = idtype;
	qk.qk_id = id;
	qk.qk_objtype = QUOTA_OBJTYPE_BLOCKS;
	if (quota_get(qh, &qk, &qv) < 0) {
		if (errno == ENOENT) {
			/* no quotas for this id */
			quota_close(qh);
			seteuid( prevuid );
			return 0;
		}
		msg = strerror(errno);
		LOG(log_info, logtype_afpd, "quota_get(%s, %s): %s",
		    vol->v_path, quota_idtype_getname(qh, idtype), msg);
		quota_close(qh);
		seteuid( prevuid );
		return -1;
	}

	quota_close(qh);

        seteuid( prevuid );

	if (qv.qv_usage >= qv.qv_hardlimit ||
	    (qv.qv_usage >= qv.qv_softlimit && now > qv.qv_expiretime)) {
		*bfree = 0;
		*btotal = dbtob(qv.qv_usage);
	}
	else {
		*bfree = dbtob(qv.qv_hardlimit - qv.qv_usage);
		*btotal = dbtob(qv.qv_hardlimit);
	}

	return 1;
}

int uquota_getvolspace( struct vol *vol, VolSpace *bfree, VolSpace *btotal, const uint32_t bsize)
{
	int uret, gret;
	VolSpace ubfree, ubtotal;
	VolSpace gbfree, gbtotal;

	uret = getfreespace(vol, &ubfree, &ubtotal,
	    uuid, QUOTA_IDTYPE_USER);
	if (uret == 1) {
		LOG(log_info, logtype_afpd, "quota_get(%s, user): %d %d",
		    vol->v_path, (int)ubfree, (int)ubtotal);
	}

	if (ngroups >= 1) {
		gret = getfreespace(vol, &gbfree, &gbtotal,
		    groups[0], QUOTA_IDTYPE_GROUP);
		if (gret == 1) {
			LOG(log_info, logtype_afpd, "quota_get(%s, group): %d %d",
			    vol->v_path, (int)gbfree, (int)gbtotal);
		}
	} else
		gret = 0;

	if (uret < 1 && gret < 1) { /* no quota for this fs */
		return AFPERR_PARAM;
	}
	if (uret < 1) {
		/* no user quotas, but group quotas; use them */
		*bfree = gbfree;
		*btotal = gbtotal;
	} else if (gret < 1) {
		/* no group quotas, but user quotas; use them */
		*bfree = ubfree;
		*btotal = ubtotal;
	} else {
		/* both; return smallest remaining space of user and group */
		if (ubfree < gbfree) {
			*bfree = ubfree;
			*btotal = ubtotal;
		} else {
			*bfree = gbfree;
			*btotal = gbtotal;
		}
	}
	return AFP_OK;

}

#else /* HAVE_LIBQUOTA */

/*
#define DEBUG_QUOTA 0
*/

#define WANT_USER_QUOTA 0
#define WANT_GROUP_QUOTA 1

#ifdef NEED_QUOTACTL_WRAPPER
int quotactl(int cmd, const char *special, int id, caddr_t addr)
{
    return syscall(__NR_quotactl, cmd, special, id, addr);
}
#endif /* NEED_QUOTACTL_WRAPPER */

static int overquota( struct dqblk *);

#ifdef __linux__

#ifdef HAVE_LINUX_XQM_H
#include <linux/xqm.h>
#else
#ifdef HAVE_XFS_XQM_H
#include <xfs/xqm.h>
#define HAVE_LINUX_XQM_H
#else
#ifdef  HAVE_LINUX_DQBLK_XFS_H
#include <linux/dqblk_xfs.h>
#define HAVE_LINUX_XQM_H
#endif /* HAVE_LINUX_DQBLK_XFS_H */
#endif /* HAVE_XFS_XQM_H */
#endif /* HAVE_LINUX_XQM_H */

#include <linux/unistd.h>

static int is_xfs = 0;

static int get_linux_xfs_quota(int, char*, uid_t, struct dqblk *);
static int get_linux_fs_quota(int, char*, uid_t, struct dqblk *);

/* format supported by current kernel */
static int kernel_iface = IFACE_UNSET;

/*
**  Check kernel quota version
**  Taken from quota-tools 3.08 by Jan Kara <jack@suse.cz>
*/
static void linuxquota_get_api( void )
{
#ifndef LINUX_API_VERSION
    struct stat st;

    if (stat("/proc/sys/fs/quota", &st) == 0) {
        kernel_iface = IFACE_GENERIC;
    }
    else {
        struct dqstats_v2 v2_stats;
        struct sigaction  sig;
        struct sigaction  oldsig;

        /* This signal handling is needed because old kernels send us SIGSEGV as they try to resolve the device */
        sig.sa_handler   = SIG_IGN;
        sig.sa_sigaction = NULL;
        sig.sa_flags     = 0;
        sigemptyset(&sig.sa_mask);
        if (sigaction(SIGSEGV, &sig, &oldsig) < 0) {
	    LOG( log_error, logtype_afpd, "cannot set SEGV signal handler: %s", strerror(errno));
            goto failure;
        }
        if (quotactl(QCMD(Q_V2_GETSTATS, 0), NULL, 0, (void *)&v2_stats) >= 0) {
            kernel_iface = IFACE_VFSV0;
        }
        else if (errno != ENOSYS && errno != ENOTSUP) {
            /* RedHat 7.1 (2.4.2-2) newquota check 
             * Q_V2_GETSTATS in it's old place, Q_GETQUOTA in the new place
             * (they haven't moved Q_GETSTATS to its new value) */
            int err_stat = 0;
            int err_quota = 0;
            char tmp[1024];         /* Just temporary buffer */

            if (quotactl(QCMD(Q_V1_GETSTATS, 0), NULL, 0, tmp))
                err_stat = errno;
            if (quotactl(QCMD(Q_V1_GETQUOTA, 0), "/dev/null", 0, tmp))
                err_quota = errno;

            /* On a RedHat 2.4.2-2 	we expect 0, EINVAL
             * On a 2.4.x 		we expect 0, ENOENT
             * On a 2.4.x-ac	we wont get here */
            if (err_stat == 0 && err_quota == EINVAL) {
                kernel_iface = IFACE_VFSV0;
            }
            else {
                kernel_iface = IFACE_VFSOLD;
            }
        }
        else {
            /* This branch is *not* in quota-tools 3.08
            ** but without it quota version is not correctly
            ** identified for the original SuSE 8.0 kernel */
            unsigned int vers_no;
            FILE * qf;

            if ((qf = fopen("/proc/fs/quota", "r"))) {
                if (fscanf(qf, "Version %u", &vers_no) == 1) {
                    if ( (vers_no == (6*10000 + 5*100 + 0)) ||
                         (vers_no == (6*10000 + 5*100 + 1)) ) {
                        kernel_iface = IFACE_VFSV0;
                    }
                }
                fclose(qf);
            }
        }
        if (sigaction(SIGSEGV, &oldsig, NULL) < 0) {
	    LOG(log_error, logtype_afpd, "cannot reset signal handler: %s", strerror(errno));
            goto failure;
        }
    }

failure:
    if (kernel_iface == IFACE_UNSET)
       kernel_iface = IFACE_VFSOLD;

#else /* defined LINUX_API_VERSION */
    kernel_iface = LINUX_API_VERSION;
#endif
}

/****************************************************************************/

static int get_linux_quota(int what, char *path, uid_t euser_id, struct dqblk *dp)
{
	int r; /* result */

	if ( is_xfs )
		r=get_linux_xfs_quota(what, path, euser_id, dp);
	else
    		r=get_linux_fs_quota(what, path, euser_id, dp);
    
	return r;
}

/****************************************************************************
 Abstract out the XFS Quota Manager quota get call.
****************************************************************************/

static int get_linux_xfs_quota(int what, char *path, uid_t euser_id, struct dqblk *dqb)
{
	int ret = -1;
#ifdef HAVE_LINUX_XQM_H
	struct fs_disk_quota D;
	
	memset (&D, 0, sizeof(D));

	if ((ret = quotactl(QCMD(Q_XGETQUOTA,(what ? GRPQUOTA : USRQUOTA)), path, euser_id, (caddr_t)&D)))
               return ret;

	dqb->bsize = (uint64_t)512;
        dqb->dqb_bsoftlimit  = (uint64_t)D.d_blk_softlimit;
        dqb->dqb_bhardlimit  = (uint64_t)D.d_blk_hardlimit;
        dqb->dqb_ihardlimit  = (uint64_t)D.d_ino_hardlimit;
        dqb->dqb_isoftlimit  = (uint64_t)D.d_ino_softlimit;
        dqb->dqb_curinodes   = (uint64_t)D.d_icount;
        dqb->dqb_curblocks   = (uint64_t)D.d_bcount; 
#endif
       return ret;
}

/*
** Wrapper for the quotactl(GETQUOTA) call.
** For API v2 the results are copied back into a v1 structure.
** Taken from quota-1.4.8 perl module
*/
static int get_linux_fs_quota(int what, char *path, uid_t euser_id, struct dqblk *dqb)
{
	int ret;

	if (kernel_iface == IFACE_UNSET)
    		linuxquota_get_api();

	if (kernel_iface == IFACE_GENERIC)
  	{
    		struct dqblk_v3 dqb3;

    		ret = quotactl(QCMD(Q_V3_GETQUOTA, (what ? GRPQUOTA : USRQUOTA)), path, euser_id, (caddr_t) &dqb3);
    		if (ret == 0)
    		{
      			dqb->dqb_bhardlimit = dqb3.dqb_bhardlimit;
      			dqb->dqb_bsoftlimit = dqb3.dqb_bsoftlimit;
      			dqb->dqb_curblocks  = dqb3.dqb_curspace / DEV_QBSIZE;
      			dqb->dqb_ihardlimit = dqb3.dqb_ihardlimit;
      			dqb->dqb_isoftlimit = dqb3.dqb_isoftlimit;
      			dqb->dqb_curinodes  = dqb3.dqb_curinodes;
      			dqb->dqb_btime      = dqb3.dqb_btime;
      			dqb->dqb_itime      = dqb3.dqb_itime;
			dqb->bsize	    = DEV_QBSIZE;
    		}
  	}
  	else if (kernel_iface == IFACE_VFSV0)
  	{
    		struct dqblk_v2 dqb2;

    		ret = quotactl(QCMD(Q_V2_GETQUOTA, (what ? GRPQUOTA : USRQUOTA)), path, euser_id, (caddr_t) &dqb2);
    		if (ret == 0)
    		{
      			dqb->dqb_bhardlimit = dqb2.dqb_bhardlimit;
      			dqb->dqb_bsoftlimit = dqb2.dqb_bsoftlimit;
      			dqb->dqb_curblocks  = dqb2.dqb_curspace / DEV_QBSIZE;
      			dqb->dqb_ihardlimit = dqb2.dqb_ihardlimit;
      			dqb->dqb_isoftlimit = dqb2.dqb_isoftlimit;
      			dqb->dqb_curinodes  = dqb2.dqb_curinodes;
      			dqb->dqb_btime      = dqb2.dqb_btime;
      			dqb->dqb_itime      = dqb2.dqb_itime;
			dqb->bsize	    = DEV_QBSIZE;
    		}
  	}
  	else /* if (kernel_iface == IFACE_VFSOLD) */
  	{
    		struct dqblk_v1 dqb1;

    		ret = quotactl(QCMD(Q_V1_GETQUOTA, (what ? GRPQUOTA : USRQUOTA)), path, euser_id, (caddr_t) &dqb1);
    		if (ret == 0)
    		{
      			dqb->dqb_bhardlimit = dqb1.dqb_bhardlimit;
      			dqb->dqb_bsoftlimit = dqb1.dqb_bsoftlimit;
      			dqb->dqb_curblocks  = dqb1.dqb_curblocks;
      			dqb->dqb_ihardlimit = dqb1.dqb_ihardlimit;
      			dqb->dqb_isoftlimit = dqb1.dqb_isoftlimit;
      			dqb->dqb_curinodes  = dqb1.dqb_curinodes;
      			dqb->dqb_btime      = dqb1.dqb_btime;
      			dqb->dqb_itime      = dqb1.dqb_itime;
			dqb->bsize	    = DEV_QBSIZE;
    		}
  	}
  	return ret;
}

#endif /* __linux__ */

#if defined(HAVE_SYS_MNTTAB_H) || defined(__svr4__)
/*
 * Return the mount point associated with the filesystem
 * on which "file" resides.  Returns NULL on failure.
 */
static char *
mountp( char *file, int *nfs)
{
    struct stat			sb;
    FILE 			*mtab;
    dev_t			devno;
    static struct mnttab	mnt;

    if (stat(file, &sb) < 0) {
        return( NULL );
    }
    devno = sb.st_dev;

    if (( mtab = fopen( "/etc/mnttab", "r" )) == NULL ) {
        return( NULL );
    }

    while ( getmntent( mtab, &mnt ) == 0 ) {
        /* local fs */
        if ( (stat( mnt.mnt_special, &sb ) == 0) && (devno == sb.st_rdev)) {
            fclose( mtab );
            return mnt.mnt_mountp;
        }

        /* check for nfs. */
        if ((stat(mnt.mnt_mountp, &sb) == 0) && (devno == sb.st_dev)) {
            *nfs = strcmp(mnt.mnt_fstype, MNTTYPE_NFS) == 0 ? 1 : 0;
            fclose( mtab );
            return mnt.mnt_special;
        }
    }

    fclose( mtab );
    return( NULL );
}

#else /* __svr4__ */
#if (defined(HAVE_SYS_MOUNT_H) && !defined(__linux__)) || defined(BSD4_4)

static char *
special(char *file, int *nfs)
{
    static struct statfs	sfs;

    if ( statfs( file, &sfs ) < 0 ) {
        return( NULL );
    }

    /* XXX: make sure this really detects an nfs mounted fs */
    if (strchr(sfs.f_mntfromname, ':'))
        *nfs = 1;
    return( sfs.f_mntfromname );
}

#else /* BSD4_4 */

static char *
special(char *file, int *nfs)
{
    struct stat		sb;
    FILE 		*mtab;
    dev_t		devno;
    struct mntent	*mnt;
    int 		found=0;

    if (stat(file, &sb) < 0 ) {
        return( NULL );
    }
    devno = sb.st_dev;

    if (( mtab = setmntent( "/etc/mtab", "r" )) == NULL ) {
        return( NULL );
    }

    while (( mnt = getmntent( mtab )) != NULL ) {
        /* check for local fs */
        if ( (stat( mnt->mnt_fsname, &sb ) == 0) && devno == sb.st_rdev) {
	    found = 1;
	    break;
        }

        /* check for an nfs mount entry. the alternative is to use
        * strcmp(mnt->mnt_type, MNTTYPE_NFS) instead of the strchr. */
        if ((stat(mnt->mnt_dir, &sb) == 0) && (devno == sb.st_dev) &&
                strchr(mnt->mnt_fsname, ':')) {
            *nfs = 1;
	    found = 1;
	    break;
        }
    }

    endmntent( mtab );

    if (!found)
	return (NULL);
#ifdef __linux__
    if (strcmp(mnt->mnt_type, "xfs") == 0)
	is_xfs = 1;
#endif
	
    return( mnt->mnt_fsname );
}

#endif /* BSD4_4 */
#endif /* __svr4__ */


static int getfsquota(struct vol *vol, const int uid, struct dqblk *dq)

{
	struct dqblk dqg;

#ifdef __svr4__
    struct quotctl      qc;
#endif

    memset(&dqg, 0, sizeof(dqg));
	
#ifdef __svr4__
    qc.op = Q_GETQUOTA;
    qc.uid = uid;
    qc.addr = (caddr_t)dq;
    if ( ioctl( vol->v_qfd, Q_QUOTACTL, &qc ) < 0 ) {
        return( AFPERR_PARAM );
    }

#else /* __svr4__ */

#ifndef USRQUOTA
#define USRQUOTA   0
#endif

#ifndef QCMD
#define QCMD(a,b)  (a)
#endif

    /* for group quotas. we only use these if the user belongs
    * to one group. */

#ifdef BSD4_4
    if ( seteuid( getuid() ) == 0 ) {
        if ( quotactl( vol->v_path, QCMD(Q_GETQUOTA,USRQUOTA),
                       uid, (char *)dq ) != 0 ) {
            /* try group quotas */
            if (ngroups >= 1) {
                if ( quotactl(vol->v_path, QCMD(Q_GETQUOTA, GRPQUOTA),
                              groups[0], (char *) &dqg) != 0 ) {
                    seteuid( uid );
                    return( AFPERR_PARAM );
                }
            }
        }
        seteuid( uid );
    }

#else /* BSD4_4 */
    if (get_linux_quota (WANT_USER_QUOTA, vol->v_gvs, uid, dq) !=0) {
        return( AFPERR_PARAM );
    }

    if (get_linux_quota(WANT_GROUP_QUOTA, vol->v_gvs, getegid(),  &dqg) != 0) {
#ifdef DEBUG_QUOTA
        LOG(log_debug, logtype_afpd, "group quota did not work!" );
#endif /* DEBUG_QUOTA */

	return AFP_OK; /* no need to check user vs group quota */
    }
#endif  /* BSD4_4 */


    /* return either the group quota entry or user quota entry,
       whichever has the least amount of space remaining
    */

    /* if user space remaining > group space remaining */
    if( 
        /* if overquota, free space is 0 otherwise hard-current */
        ( overquota( dq ) ? 0 : ( dq->dqb_bhardlimit ? dq->dqb_bhardlimit - 
                                  dq->dqb_curblocks : ~((uint64_t) 0) ) )

      >
        
        ( overquota( &dqg ) ? 0 : ( dqg.dqb_bhardlimit ? dqg.dqb_bhardlimit - 
                                    dqg.dqb_curblocks : ~((uint64_t) 0) ) )

      ) /* if */
    {
        /* use group quota limits rather than user limits */
        dq->dqb_curblocks = dqg.dqb_curblocks;
        dq->dqb_bhardlimit = dqg.dqb_bhardlimit;
        dq->dqb_bsoftlimit = dqg.dqb_bsoftlimit;
        dq->dqb_btimelimit = dqg.dqb_btimelimit;
    } /* if */


#endif /* __svr4__ */

    return AFP_OK;
}


static int getquota( struct vol *vol, struct dqblk *dq, const uint32_t bsize)
{
    char *p;

#ifdef __svr4__
    char		buf[ MAXPATHLEN + 1];

    if ( vol->v_qfd == -1 && vol->v_gvs == NULL) {
        if (( p = mountp( vol->v_path, &vol->v_nfs)) == NULL ) {
            LOG(log_info, logtype_afpd, "getquota: mountp %s fails", vol->v_path );
            return( AFPERR_PARAM );
        }

        if (vol->v_nfs) {
            if (( vol->v_gvs = (char *)malloc( strlen( p ) + 1 )) == NULL ) {
                LOG(log_error, logtype_afpd, "getquota: malloc: %s", strerror(errno) );
                return AFPERR_MISC;
            }
            strcpy( vol->v_gvs, p );

        } else {
            sprintf( buf, "%s/quotas", p );
            if (( vol->v_qfd = open( buf, O_RDONLY, 0 )) < 0 ) {
                LOG(log_info, logtype_afpd, "open %s: %s", buf, strerror(errno) );
                return( AFPERR_PARAM );
            }
        }

    }
#else
    if ( vol->v_gvs == NULL ) {
        if (( p = special( vol->v_path, &vol->v_nfs )) == NULL ) {
            LOG(log_info, logtype_afpd, "getquota: special %s fails", vol->v_path );
            return( AFPERR_PARAM );
        }

        if (( vol->v_gvs = (char *)malloc( strlen( p ) + 1 )) == NULL ) {
            LOG(log_error, logtype_afpd, "getquota: malloc: %s", strerror(errno) );
            return AFPERR_MISC;
        }
        strcpy( vol->v_gvs, p );
    }
#endif

    return vol->v_nfs ? getnfsquota(vol, uuid, bsize, dq) :
           getfsquota(vol, uuid, dq);
}

static int overquota( struct dqblk *dqblk)
{
    struct timeval	tv;

    if ( dqblk->dqb_curblocks > dqblk->dqb_bhardlimit &&
         dqblk->dqb_bhardlimit != 0 ) {
        return( 1 );
    }

    if ( dqblk->dqb_curblocks < dqblk->dqb_bsoftlimit ||
         dqblk->dqb_bsoftlimit == 0 ) {
        return( 0 );
    }
    if ( gettimeofday( &tv, NULL ) < 0 ) {
        LOG(log_error, logtype_afpd, "overquota: gettimeofday: %s", strerror(errno) );
        return( AFPERR_PARAM );
    }
    if ( dqblk->dqb_btimelimit && dqblk->dqb_btimelimit > tv.tv_sec ) {
        return( 0 );
    }
    return( 1 );
}

/*
 * This next bit is basically for linux -- everything is fine
 * if you use 1k blocks... but if you try (for example) to mount
 * a volume via nfs from a netapp (which might use 4k blocks) everything
 * gets reported improperly.  I have no idea about dbtob on other
 * platforms.
 */

#ifdef HAVE_BROKEN_DBTOB
#undef dbtob
#define dbtob(a, b)	((VolSpace)((VolSpace)(a) * (VolSpace)(b)))
#define HAVE_2ARG_DBTOB
#endif

#ifndef dbtob
#define dbtob(a)       ((a) << 10)
#endif

/* i do the cast to VolSpace here to make sure that 64-bit shifts
   work */
#ifdef HAVE_2ARG_DBTOB
#define tobytes(a, b)  dbtob((VolSpace) (a), (VolSpace) (b))
#else 
#define tobytes(a, b)  dbtob((VolSpace) (a))
#endif

int uquota_getvolspace( struct vol *vol, VolSpace *bfree, VolSpace *btotal, const uint32_t bsize)
{
	uint64_t this_bsize;
	struct dqblk dqblk;

	this_bsize = bsize;
			
	if (getquota( vol, &dqblk, bsize) != 0 ) {
		return( AFPERR_PARAM );
	}

#ifdef __linux__
	this_bsize = dqblk.bsize;
#endif

#ifdef DEBUG_QUOTA
        LOG(log_debug, logtype_afpd, "after calling getquota in uquota_getvolspace!" );
        LOG(log_debug, logtype_afpd, "dqb_ihardlimit: %u", dqblk.dqb_ihardlimit );
        LOG(log_debug, logtype_afpd, "dqb_isoftlimit: %u", dqblk.dqb_isoftlimit );
        LOG(log_debug, logtype_afpd, "dqb_curinodes : %u", dqblk.dqb_curinodes );
        LOG(log_debug, logtype_afpd, "dqb_bhardlimit: %u", dqblk.dqb_bhardlimit );
        LOG(log_debug, logtype_afpd, "dqb_bsoftlimit: %u", dqblk.dqb_bsoftlimit );
        LOG(log_debug, logtype_afpd, "dqb_curblocks : %u", dqblk.dqb_curblocks );
        LOG(log_debug, logtype_afpd, "dqb_btime     : %u", dqblk.dqb_btime );
        LOG(log_debug, logtype_afpd, "dqb_itime     : %u", dqblk.dqb_itime );
        LOG(log_debug, logtype_afpd, "bsize/this_bsize : %u/%u", bsize, this_bsize );
	LOG(log_debug, logtype_afpd, "dqblk.dqb_bhardlimit size: %u", tobytes( dqblk.dqb_bhardlimit, this_bsize ));
	LOG(log_debug, logtype_afpd, "dqblk.dqb_bsoftlimit size: %u", tobytes( dqblk.dqb_bsoftlimit, this_bsize ));
	LOG(log_debug, logtype_afpd, "dqblk.dqb_curblocks  size: %u", tobytes( dqblk.dqb_curblocks, this_bsize ));
#endif /* DEBUG_QUOTA */ 

	/* no limit set for this user. it might be set in the future. */
	if (dqblk.dqb_bsoftlimit == 0 && dqblk.dqb_bhardlimit == 0) {
        	*btotal = *bfree = ~((VolSpace) 0);
    	} else if ( overquota( &dqblk )) {
        	if ( tobytes( dqblk.dqb_curblocks, this_bsize ) > tobytes( dqblk.dqb_bsoftlimit, this_bsize ) ) {
            		*btotal = tobytes( dqblk.dqb_curblocks, this_bsize );
            		*bfree = 0;
        	}
        	else {
            		*btotal = tobytes( dqblk.dqb_bsoftlimit, this_bsize );
            		*bfree  = tobytes( dqblk.dqb_bsoftlimit, this_bsize ) -
                     		  tobytes( dqblk.dqb_curblocks, this_bsize );
        	}
    	} else {
        	*btotal = tobytes( dqblk.dqb_bhardlimit, this_bsize );
        	*bfree  = tobytes( dqblk.dqb_bhardlimit, this_bsize  ) -
                 	  tobytes( dqblk.dqb_curblocks, this_bsize );
    	}

#ifdef DEBUG_QUOTA
        LOG(log_debug, logtype_afpd, "bfree          : %u", *bfree );
        LOG(log_debug, logtype_afpd, "btotal         : %u", *btotal );
        LOG(log_debug, logtype_afpd, "bfree          : %uKB", *bfree/1024 );
        LOG(log_debug, logtype_afpd, "btotal         : %uKB", *btotal/1024 );
#endif

	return( AFP_OK );
}
#endif /* HAVE_LIBQUOTA */
#endif
