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/*
* Implementation of XFS quota manager.
* Copyright (c) 2001 Silicon Graphics, Inc.
*/
#include "config.h"
#include <stdio.h>
#include <unistd.h>
#include <stdlib.h>
#include <string.h>
#include <errno.h>
#include "pot.h"
#include "common.h"
#include "bylabel.h"
#include "quotaio.h"
#include "quotasys.h"
#include "dqblk_xfs.h"
#include "quotaio_generic.h"
#define XFS_USRQUOTA(h) ((h)->qh_type == USRQUOTA && \
(h)->qh_info.u.xfs_mdqi.qs_flags & XFS_QUOTA_UDQ_ACCT)
#define XFS_GRPQUOTA(h) ((h)->qh_type == GRPQUOTA && \
(h)->qh_info.u.xfs_mdqi.qs_flags & XFS_QUOTA_GDQ_ACCT)
static int xfs_init_io(struct quota_handle *h);
static int xfs_write_info(struct quota_handle *h);
static struct dquot *xfs_read_dquot(struct quota_handle *h, qid_t id);
static int xfs_commit_dquot(struct dquot *dquot, int flags);
static int xfs_scan_dquots(struct quota_handle *h, int (*process_dquot) (struct dquot *dquot, char *dqname));
static int xfs_report(struct quota_handle *h, int verbose);
struct quotafile_ops quotafile_ops_xfs = {
init_io: xfs_init_io,
write_info: xfs_write_info,
read_dquot: xfs_read_dquot,
commit_dquot: xfs_commit_dquot,
scan_dquots: xfs_scan_dquots,
report: xfs_report
};
/*
* Convert XFS kernel quota format to utility format
*/
static inline void xfs_kern2utildqblk(struct util_dqblk *u, struct xfs_kern_dqblk * k)
{
u->dqb_ihardlimit = k->d_ino_hardlimit;
u->dqb_isoftlimit = k->d_ino_softlimit;
u->dqb_bhardlimit = k->d_blk_hardlimit >> 1;
u->dqb_bsoftlimit = k->d_blk_softlimit >> 1;
u->dqb_curinodes = k->d_icount;
u->dqb_curspace = ((qsize_t)k->d_bcount) << 9;
u->dqb_itime = k->d_itimer;
u->dqb_btime = k->d_btimer;
}
/*
* Convert utility quota format to XFS kernel format
*/
static inline void xfs_util2kerndqblk(struct xfs_kern_dqblk *k, struct util_dqblk *u)
{
memset(k, 0, sizeof(struct xfs_kern_dqblk));
k->d_ino_hardlimit = u->dqb_ihardlimit;
k->d_ino_softlimit = u->dqb_isoftlimit;
k->d_blk_hardlimit = u->dqb_bhardlimit << 1;
k->d_blk_softlimit = u->dqb_bsoftlimit << 1;
k->d_icount = u->dqb_curinodes;
k->d_bcount = u->dqb_curspace >> 9;
k->d_itimer = u->dqb_itime;
k->d_btimer = u->dqb_btime;
}
/*
* Initialize quota information
*/
static int xfs_init_io(struct quota_handle *h)
{
struct xfs_mem_dqinfo info;
int qcmd;
qcmd = QCMD(Q_XFS_GETQSTAT, 0);
memset(&info, 0, sizeof(struct xfs_mem_dqinfo));
if (quotactl(qcmd, h->qh_quotadev, 0, (void *)&info) < 0)
return -1;
h->qh_info.dqi_bgrace = info.qs_btimelimit;
h->qh_info.dqi_igrace = info.qs_itimelimit;
h->qh_info.u.xfs_mdqi = info;
return 0;
}
/*
* Write information (grace times)
*/
static int xfs_write_info(struct quota_handle *h)
{
struct xfs_kern_dqblk xdqblk;
int qcmd;
if (!XFS_USRQUOTA(h) && !XFS_GRPQUOTA(h))
return 0;
memset(&xdqblk, 0, sizeof(struct xfs_kern_dqblk));
xdqblk.d_btimer = h->qh_info.dqi_bgrace;
xdqblk.d_itimer = h->qh_info.dqi_igrace;
xdqblk.d_fieldmask |= FS_DQ_TIMER_MASK;
qcmd = QCMD(Q_XFS_SETQLIM, h->qh_type);
if (quotactl(qcmd, h->qh_quotadev, 0, (void *)&xdqblk) < 0)
return -1;
return 0;
}
/*
* Read a dqblk struct from the quota manager
*/
static struct dquot *xfs_read_dquot(struct quota_handle *h, qid_t id)
{
struct dquot *dquot = get_empty_dquot();
struct xfs_kern_dqblk xdqblk;
int qcmd;
dquot->dq_id = id;
dquot->dq_h = h;
if (!XFS_USRQUOTA(h) && !XFS_GRPQUOTA(h))
return dquot;
qcmd = QCMD(Q_XFS_GETQUOTA, h->qh_type);
if (quotactl(qcmd, h->qh_quotadev, id, (void *)&xdqblk) < 0) {
;
}
else {
xfs_kern2utildqblk(&dquot->dq_dqb, &xdqblk);
}
return dquot;
}
/*
* Write a dqblk struct to the XFS quota manager
*/
static int xfs_commit_dquot(struct dquot *dquot, int flags)
{
struct quota_handle *h = dquot->dq_h;
struct xfs_kern_dqblk xdqblk;
qid_t id = dquot->dq_id;
int qcmd;
if (!XFS_USRQUOTA(h) && !XFS_GRPQUOTA(h))
return 0;
xfs_util2kerndqblk(&xdqblk, &dquot->dq_dqb);
xdqblk.d_flags |= XFS_USRQUOTA(h) ? XFS_USER_QUOTA : XFS_GROUP_QUOTA;
xdqblk.d_id = id;
if (strcmp(h->qh_fstype, MNTTYPE_GFS2) == 0) {
if (flags & COMMIT_LIMITS) /* warn/limit */
xdqblk.d_fieldmask |= FS_DQ_BSOFT | FS_DQ_BHARD;
if (flags & COMMIT_USAGE) /* block usage */
xdqblk.d_fieldmask |= FS_DQ_BCOUNT;
} else {
xdqblk.d_fieldmask |= FS_DQ_LIMIT_MASK;
}
qcmd = QCMD(Q_XFS_SETQLIM, h->qh_type);
if (quotactl(qcmd, h->qh_quotadev, id, (void *)&xdqblk) < 0) {
;
}
else {
return 0;
}
return -1;
}
/*
* xfs_scan_dquots helper - processes a single dquot
*/
static int xfs_get_dquot(struct dquot *dq)
{
struct xfs_kern_dqblk d;
int qcmd = QCMD(Q_XFS_GETQUOTA, dq->dq_h->qh_type);
int ret;
memset(&d, 0, sizeof(d));
ret = quotactl(qcmd, dq->dq_h->qh_quotadev, dq->dq_id, (void *)&d);
if (ret < 0) {
if (errno == ENOENT)
return 0;
return -1;
}
xfs_kern2utildqblk(&dq->dq_dqb, &d);
return 0;
}
/*
* Scan all known dquots and call callback on each
*/
static int xfs_scan_dquots(struct quota_handle *h, int (*process_dquot) (struct dquot *dquot, char *dqname))
{
if (!XFS_USRQUOTA(h) && !XFS_GRPQUOTA(h))
return 0;
return generic_scan_dquots(h, process_dquot, xfs_get_dquot);
}
/*
* Report information about XFS quota on given filesystem
*/
static int xfs_report(struct quota_handle *h, int verbose)
{
u_int16_t sbflags;
struct xfs_mem_dqinfo *info = &h->qh_info.u.xfs_mdqi;
if (!verbose)
return 0;
/* quotaon/off flags */
printf(_("*** Status for %s quotas on device %s\n"), type2name(h->qh_type), h->qh_quotadev);
#define XQM_ON(flag) ((info->qs_flags & (flag)) ? _("ON") : _("OFF"))
if (h->qh_type == USRQUOTA) {
printf(_("Accounting: %s; Enforcement: %s\n"),
XQM_ON(XFS_QUOTA_UDQ_ACCT), XQM_ON(XFS_QUOTA_UDQ_ENFD));
}
else { /* qh_type == USRQUOTA */
printf(_("Accounting: %s; Enforcement: %s\n"),
XQM_ON(XFS_QUOTA_GDQ_ACCT), XQM_ON(XFS_QUOTA_GDQ_ENFD));
}
#undef XQM_ON
/*
* If this is the root file system, it is possible that quotas are
* on ondisk, but not incore. Those flags will be in the HI 8 bits.
*/
#define XQM_ONDISK(flag) ((sbflags & (flag)) ? _("ON") : _("OFF"))
if ((sbflags = (info->qs_flags & 0xff00) >> 8) != 0) {
if (h->qh_type == USRQUOTA) {
printf(_("Accounting [ondisk]: %s; Enforcement [ondisk]: %s\n"),
XQM_ONDISK(XFS_QUOTA_UDQ_ACCT), XQM_ONDISK(XFS_QUOTA_UDQ_ENFD));
}
else { /* qh_type == USRQUOTA */
printf(_("Accounting [ondisk]: %s; Enforcement [ondisk]: %s\n"),
XQM_ONDISK(XFS_QUOTA_GDQ_ACCT), XQM_ONDISK(XFS_QUOTA_GDQ_ENFD));
}
#undef XQM_ONDISK
}
/* user and group quota file status information */
if (h->qh_type == USRQUOTA) {
if (info->qs_uquota.qfs_ino == -1 || info->qs_uquota.qfs_ino == 0)
printf(_("Inode: none\n"));
else
printf(_("Inode: #%llu (%llu blocks, %u extents)\n"),
(unsigned long long)info->qs_uquota.qfs_ino,
(unsigned long long)info->qs_uquota.qfs_nblks,
info->qs_uquota.qfs_nextents);
}
else { /* qh_type == GRPQUOTA */
if (info->qs_gquota.qfs_ino == -1)
printf(_("Inode: none\n"));
else
printf(_("Inode: #%llu (%llu blocks, %u extents)\n"),
(unsigned long long)info->qs_gquota.qfs_ino,
(unsigned long long)info->qs_gquota.qfs_nblks,
info->qs_gquota.qfs_nextents);
}
return 0;
}
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