STATIC int
xfs_qm_syncall(
struct bhv_desc *bhv,
int flags,
cred_t *credp)
{
struct vfs *vfsp = bhvtovfs(bhv);
struct xfs_mount *mp = XFS_VFSTOM(vfsp);
int error;
/*
* Get the Quota Manager to flush the dquots.
*/
if (XFS_IS_QUOTA_ON(mp)) {
if ((error = xfs_qm_sync(mp, flags))) {
/*
* If we got an IO error, we will be shutting down.
* So, there's nothing more for us to do here.
*/
ASSERT(error != EIO || XFS_FORCED_SHUTDOWN(mp));
if (XFS_FORCED_SHUTDOWN(mp)) {
return XFS_ERROR(error);
}
}
}
PVFS_SYNC(BHV_NEXT(bhv), flags, credp, error);
return error;
}
STATIC int
xfs_qm_showargs(
struct bhv_desc *bhv,
struct seq_file *m)
{
struct vfs *vfsp = bhvtovfs(bhv);
struct xfs_mount *mp = XFS_VFSTOM(vfsp);
int error;
if (mp->m_qflags & XFS_UQUOTA_ACCT) {
(mp->m_qflags & XFS_UQUOTA_ENFD) ?
seq_puts(m, "," MNTOPT_USRQUOTA) :
seq_puts(m, "," MNTOPT_UQUOTANOENF);
}
if (mp->m_qflags & XFS_PQUOTA_ACCT) {
(mp->m_qflags & XFS_OQUOTA_ENFD) ?
seq_puts(m, "," MNTOPT_PRJQUOTA) :
seq_puts(m, "," MNTOPT_PQUOTANOENF);
}
if (mp->m_qflags & XFS_GQUOTA_ACCT) {
(mp->m_qflags & XFS_OQUOTA_ENFD) ?
seq_puts(m, "," MNTOPT_GRPQUOTA) :
seq_puts(m, "," MNTOPT_GQUOTANOENF);
}
if (!(mp->m_qflags & XFS_ALL_QUOTA_ACCT))
seq_puts(m, "," MNTOPT_NOQUOTA);
PVFS_SHOWARGS(BHV_NEXT(bhv), m, error);
return error;
}
void
xfs_initialize_vnode(
bhv_desc_t *bdp,
vnode_t *vp,
bhv_desc_t *inode_bhv,
int unlock)
{
xfs_inode_t *ip = XFS_BHVTOI(inode_bhv);
struct inode *inode = LINVFS_GET_IP(vp);
if (!inode_bhv->bd_vobj) {
vp->v_vfsp = bhvtovfs(bdp);
bhv_desc_init(inode_bhv, ip, vp, &xfs_vnodeops);
bhv_insert(VN_BHV_HEAD(vp), inode_bhv);
}
vp->v_type = IFTOVT(ip->i_d.di_mode);
/* Have we been called during the new inode create process,
* in which case we are too early to fill in the Linux inode.
*/
if (vp->v_type == VNON)
return;
xfs_revalidate_inode(XFS_BHVTOM(bdp), vp, ip);
/* For new inodes we need to set the ops vectors,
* and unlock the inode.
*/
if (unlock && (inode->i_state & I_NEW)) {
xfs_set_inodeops(inode);
unlock_new_inode(inode);
}
}
STATIC int
xfs_qm_parseargs(
struct bhv_desc *bhv,
char *options,
struct xfs_mount_args *args,
int update)
{
size_t length;
char *local_options = options;
char *this_char;
int error;
int referenced = update;
while ((this_char = strsep(&local_options, ",")) != NULL) {
length = strlen(this_char);
if (local_options)
length++;
if (!strcmp(this_char, MNTOPT_NOQUOTA)) {
args->flags &= ~(XFSMNT_UQUOTAENF|XFSMNT_UQUOTA);
args->flags &= ~(XFSMNT_GQUOTAENF|XFSMNT_GQUOTA);
referenced = update;
} else if (!strcmp(this_char, MNTOPT_QUOTA) ||
!strcmp(this_char, MNTOPT_UQUOTA) ||
!strcmp(this_char, MNTOPT_USRQUOTA)) {
args->flags |= XFSMNT_UQUOTA | XFSMNT_UQUOTAENF;
referenced = 1;
} else if (!strcmp(this_char, MNTOPT_QUOTANOENF) ||
!strcmp(this_char, MNTOPT_UQUOTANOENF)) {
args->flags |= XFSMNT_UQUOTA;
args->flags &= ~XFSMNT_UQUOTAENF;
referenced = 1;
} else if (!strcmp(this_char, MNTOPT_GQUOTA) ||
!strcmp(this_char, MNTOPT_GRPQUOTA)) {
args->flags |= XFSMNT_GQUOTA | XFSMNT_GQUOTAENF;
referenced = 1;
} else if (!strcmp(this_char, MNTOPT_GQUOTANOENF)) {
args->flags |= XFSMNT_GQUOTA;
args->flags &= ~XFSMNT_GQUOTAENF;
referenced = 1;
} else {
if (local_options)
*(local_options-1) = ',';
continue;
}
while (length--)
*this_char++ = ',';
}
PVFS_PARSEARGS(BHV_NEXT(bhv), options, args, update, error);
if (!error && !referenced)
bhv_remove_vfsops(bhvtovfs(bhv), VFS_POSITION_QM);
return error;
}
STATIC int
xfs_mntupdate(
bhv_desc_t *bdp,
int *flags,
struct xfs_mount_args *args)
{
struct vfs *vfsp = bhvtovfs(bdp);
xfs_mount_t *mp = XFS_BHVTOM(bdp);
int pincount, error;
int count = 0;
if (args->flags & XFSMNT_NOATIME)
mp->m_flags |= XFS_MOUNT_NOATIME;
else
mp->m_flags &= ~XFS_MOUNT_NOATIME;
if (!(vfsp->vfs_flag & VFS_RDONLY)) {
VFS_SYNC(vfsp, SYNC_FSDATA|SYNC_BDFLUSH|SYNC_ATTR, NULL, error);
}
if (*flags & MS_RDONLY) {
xfs_refcache_purge_mp(mp);
xfs_flush_buftarg(mp->m_ddev_targp, 0);
xfs_finish_reclaim_all(mp, 0);
/* This loop must run at least twice.
* The first instance of the loop will flush
* most meta data but that will generate more
* meta data (typically directory updates).
* Which then must be flushed and logged before
* we can write the unmount record.
*/
do {
VFS_SYNC(vfsp, REMOUNT_READONLY_FLAGS, NULL, error);
pincount = xfs_flush_buftarg(mp->m_ddev_targp, 1);
if (!pincount) {
delay(50);
count++;
}
} while (count < 2);
/* Ok now write out an unmount record */
xfs_log_unmount_write(mp);
xfs_unmountfs_writesb(mp);
vfsp->vfs_flag |= VFS_RDONLY;
} else {
vfsp->vfs_flag &= ~VFS_RDONLY;
}
return 0;
}
STATIC int
xfs_qm_mount(
struct bhv_desc *bhv,
struct xfs_mount_args *args,
struct cred *cr)
{
struct vfs *vfsp = bhvtovfs(bhv);
struct xfs_mount *mp = XFS_VFSTOM(vfsp);
int error;
if (args->flags & (XFSMNT_UQUOTA | XFSMNT_GQUOTA | XFSMNT_PQUOTA))
xfs_qm_mount_quotainit(mp, args->flags);
PVFS_MOUNT(BHV_NEXT(bhv), args, cr, error);
return error;
}
/*
* The main distribution switch of all XFS quotactl system calls.
*/
int
xfs_qm_quotactl(
struct bhv_desc *bdp,
int cmd,
int id,
xfs_caddr_t addr)
{
xfs_mount_t *mp;
bhv_vfs_t *vfsp;
int error;
vfsp = bhvtovfs(bdp);
mp = XFS_VFSTOM(vfsp);
ASSERT(addr != NULL || cmd == Q_XQUOTASYNC);
/*
* The following commands are valid even when quotaoff.
*/
switch (cmd) {
case Q_XQUOTARM:
/*
* Truncate quota files. quota must be off.
*/
if (XFS_IS_QUOTA_ON(mp))
return XFS_ERROR(EINVAL);
if (vfsp->vfs_flag & VFS_RDONLY)
return XFS_ERROR(EROFS);
return (xfs_qm_scall_trunc_qfiles(mp,
xfs_qm_import_qtype_flags(*(uint *)addr)));
case Q_XGETQSTAT:
/*
* Get quota status information.
*/
return (xfs_qm_scall_getqstat(mp, (fs_quota_stat_t *)addr));
case Q_XQUOTAON:
/*
* QUOTAON - enabling quota enforcement.
* Quota accounting must be turned on at mount time.
*/
if (vfsp->vfs_flag & VFS_RDONLY)
return XFS_ERROR(EROFS);
return (xfs_qm_scall_quotaon(mp,
xfs_qm_import_flags(*(uint *)addr)));
case Q_XQUOTAOFF:
if (vfsp->vfs_flag & VFS_RDONLY)
return XFS_ERROR(EROFS);
break;
case Q_XQUOTASYNC:
return (xfs_sync_inodes(mp, SYNC_DELWRI, NULL));
default:
break;
}
if (! XFS_IS_QUOTA_ON(mp))
return XFS_ERROR(ESRCH);
switch (cmd) {
case Q_XQUOTAOFF:
if (vfsp->vfs_flag & VFS_RDONLY)
return XFS_ERROR(EROFS);
error = xfs_qm_scall_quotaoff(mp,
xfs_qm_import_flags(*(uint *)addr),
B_FALSE);
break;
case Q_XGETQUOTA:
error = xfs_qm_scall_getquota(mp, (xfs_dqid_t)id, XFS_DQ_USER,
(fs_disk_quota_t *)addr);
break;
case Q_XGETGQUOTA:
error = xfs_qm_scall_getquota(mp, (xfs_dqid_t)id, XFS_DQ_GROUP,
(fs_disk_quota_t *)addr);
break;
case Q_XGETPQUOTA:
error = xfs_qm_scall_getquota(mp, (xfs_dqid_t)id, XFS_DQ_PROJ,
(fs_disk_quota_t *)addr);
break;
case Q_XSETQLIM:
if (vfsp->vfs_flag & VFS_RDONLY)
return XFS_ERROR(EROFS);
error = xfs_qm_scall_setqlim(mp, (xfs_dqid_t)id, XFS_DQ_USER,
(fs_disk_quota_t *)addr);
break;
case Q_XSETGQLIM:
if (vfsp->vfs_flag & VFS_RDONLY)
return XFS_ERROR(EROFS);
error = xfs_qm_scall_setqlim(mp, (xfs_dqid_t)id, XFS_DQ_GROUP,
(fs_disk_quota_t *)addr);
break;
case Q_XSETPQLIM:
if (vfsp->vfs_flag & VFS_RDONLY)
return XFS_ERROR(EROFS);
error = xfs_qm_scall_setqlim(mp, (xfs_dqid_t)id, XFS_DQ_PROJ,
(fs_disk_quota_t *)addr);
break;
default:
error = XFS_ERROR(EINVAL);
break;
}
return (error);
}
/*
* The main distribution switch of all XFS quotactl system calls.
*/
int
xfs_qm_quotactl(
struct bhv_desc *bdp,
int cmd,
int id,
xfs_caddr_t addr)
{
xfs_mount_t *mp;
int error;
struct vfs *vfsp;
vfsp = bhvtovfs(bdp);
mp = XFS_VFSTOM(vfsp);
if (addr == NULL && cmd != Q_SYNC)
return XFS_ERROR(EINVAL);
if (id < 0 && cmd != Q_SYNC)
return XFS_ERROR(EINVAL);
/*
* The following commands are valid even when quotaoff.
*/
switch (cmd) {
/*
* truncate quota files. quota must be off.
*/
case Q_XQUOTARM:
if (XFS_IS_QUOTA_ON(mp) || addr == NULL)
return XFS_ERROR(EINVAL);
if (vfsp->vfs_flag & VFS_RDONLY)
return XFS_ERROR(EROFS);
return (xfs_qm_scall_trunc_qfiles(mp,
xfs_qm_import_qtype_flags(*(uint *)addr)));
/*
* Get quota status information.
*/
case Q_XGETQSTAT:
return (xfs_qm_scall_getqstat(mp, (fs_quota_stat_t *)addr));
/*
* QUOTAON for root f/s and quota enforcement on others..
* Quota accounting for non-root f/s's must be turned on
* at mount time.
*/
case Q_XQUOTAON:
if (addr == NULL)
return XFS_ERROR(EINVAL);
if (vfsp->vfs_flag & VFS_RDONLY)
return XFS_ERROR(EROFS);
return (xfs_qm_scall_quotaon(mp,
xfs_qm_import_flags(*(uint *)addr)));
case Q_XQUOTAOFF:
if (vfsp->vfs_flag & VFS_RDONLY)
return XFS_ERROR(EROFS);
break;
default:
break;
}
if (! XFS_IS_QUOTA_ON(mp))
return XFS_ERROR(ESRCH);
switch (cmd) {
case Q_XQUOTAOFF:
if (vfsp->vfs_flag & VFS_RDONLY)
return XFS_ERROR(EROFS);
error = xfs_qm_scall_quotaoff(mp,
xfs_qm_import_flags(*(uint *)addr),
B_FALSE);
break;
/*
* Defaults to XFS_GETUQUOTA.
*/
case Q_XGETQUOTA:
error = xfs_qm_scall_getquota(mp, (xfs_dqid_t)id, XFS_DQ_USER,
(fs_disk_quota_t *)addr);
break;
/*
* Set limits, both hard and soft. Defaults to Q_SETUQLIM.
*/
case Q_XSETQLIM:
if (vfsp->vfs_flag & VFS_RDONLY)
return XFS_ERROR(EROFS);
error = xfs_qm_scall_setqlim(mp, (xfs_dqid_t)id, XFS_DQ_USER,
(fs_disk_quota_t *)addr);
break;
case Q_XSETGQLIM:
if (vfsp->vfs_flag & VFS_RDONLY)
return XFS_ERROR(EROFS);
error = xfs_qm_scall_setqlim(mp, (xfs_dqid_t)id, XFS_DQ_GROUP,
(fs_disk_quota_t *)addr);
break;
case Q_XGETGQUOTA:
error = xfs_qm_scall_getquota(mp, (xfs_dqid_t)id, XFS_DQ_GROUP,
(fs_disk_quota_t *)addr);
break;
/*
* Quotas are entirely undefined after quotaoff in XFS quotas.
* For instance, there's no way to set limits when quotaoff.
*/
default:
error = XFS_ERROR(EINVAL);
break;
}
return (error);
}
STATIC int
xfs_unmount(
bhv_desc_t *bdp,
int flags,
cred_t *credp)
{
struct vfs *vfsp = bhvtovfs(bdp);
xfs_mount_t *mp = XFS_BHVTOM(bdp);
xfs_inode_t *rip;
vnode_t *rvp;
int unmount_event_wanted = 0;
int unmount_event_flags = 0;
int xfs_unmountfs_needed = 0;
int error;
rip = mp->m_rootip;
rvp = XFS_ITOV(rip);
if (vfsp->vfs_flag & VFS_DMI) {
error = XFS_SEND_PREUNMOUNT(mp, vfsp,
rvp, DM_RIGHT_NULL, rvp, DM_RIGHT_NULL,
NULL, NULL, 0, 0,
(mp->m_dmevmask & (1<<DM_EVENT_PREUNMOUNT))?
0:DM_FLAGS_UNWANTED);
if (error)
return XFS_ERROR(error);
unmount_event_wanted = 1;
unmount_event_flags = (mp->m_dmevmask & (1<<DM_EVENT_UNMOUNT))?
0 : DM_FLAGS_UNWANTED;
}
/*
* First blow any referenced inode from this file system
* out of the reference cache, and delete the timer.
*/
xfs_refcache_purge_mp(mp);
XFS_bflush(mp->m_ddev_targp);
error = xfs_unmount_flush(mp, 0);
if (error)
goto out;
ASSERT(vn_count(rvp) == 1);
/*
* Drop the reference count
*/
VN_RELE(rvp);
/*
* If we're forcing a shutdown, typically because of a media error,
* we want to make sure we invalidate dirty pages that belong to
* referenced vnodes as well.
*/
if (XFS_FORCED_SHUTDOWN(mp)) {
error = xfs_sync(&mp->m_bhv,
(SYNC_WAIT | SYNC_CLOSE), credp);
ASSERT(error != EFSCORRUPTED);
}
xfs_unmountfs_needed = 1;
out:
/* Send DMAPI event, if required.
* Then do xfs_unmountfs() if needed.
* Then return error (or zero).
*/
if (unmount_event_wanted) {
/* Note: mp structure must still exist for
* XFS_SEND_UNMOUNT() call.
*/
XFS_SEND_UNMOUNT(mp, vfsp, error == 0 ? rvp : NULL,
DM_RIGHT_NULL, 0, error, unmount_event_flags);
}
if (xfs_unmountfs_needed) {
/*
* Call common unmount function to flush to disk
* and free the super block buffer & mount structures.
*/
xfs_unmountfs(mp, credp);
}
return XFS_ERROR(error);
}
/*
* xfs_mount
*
* The file system configurations are:
* (1) device (partition) with data and internal log
* (2) logical volume with data and log subvolumes.
* (3) logical volume with data, log, and realtime subvolumes.
*
* We only have to handle opening the log and realtime volumes here if
* they are present. The data subvolume has already been opened by
* get_sb_bdev() and is stored in vfsp->vfs_super->s_bdev.
*/
STATIC int
xfs_mount(
struct bhv_desc *bhvp,
struct xfs_mount_args *args,
cred_t *credp)
{
struct vfs *vfsp = bhvtovfs(bhvp);
struct bhv_desc *p;
struct xfs_mount *mp = XFS_BHVTOM(bhvp);
struct block_device *ddev, *logdev, *rtdev;
int flags = 0, error;
ddev = vfsp->vfs_super->s_bdev;
logdev = rtdev = NULL;
/*
* Open real time and log devices - order is important.
*/
if (args->logname[0]) {
error = xfs_blkdev_get(mp, args->logname, &logdev);
if (error)
return error;
}
if (args->rtname[0]) {
error = xfs_blkdev_get(mp, args->rtname, &rtdev);
if (error) {
xfs_blkdev_put(logdev);
return error;
}
if (rtdev == ddev || rtdev == logdev) {
cmn_err(CE_WARN,
"XFS: Cannot mount filesystem with identical rtdev and ddev/logdev.");
xfs_blkdev_put(logdev);
xfs_blkdev_put(rtdev);
return EINVAL;
}
}
/*
* Setup xfs_mount function vectors from available behaviors
*/
p = vfs_bhv_lookup(vfsp, VFS_POSITION_DM);
mp->m_dm_ops = p ? *(xfs_dmops_t *) vfs_bhv_custom(p) : xfs_dmcore_stub;
p = vfs_bhv_lookup(vfsp, VFS_POSITION_QM);
mp->m_qm_ops = p ? *(xfs_qmops_t *) vfs_bhv_custom(p) : xfs_qmcore_stub;
p = vfs_bhv_lookup(vfsp, VFS_POSITION_IO);
mp->m_io_ops = p ? *(xfs_ioops_t *) vfs_bhv_custom(p) : xfs_iocore_xfs;
/*
* Setup xfs_mount buffer target pointers
*/
mp->m_ddev_targp = xfs_alloc_buftarg(ddev);
if (rtdev)
mp->m_rtdev_targp = xfs_alloc_buftarg(rtdev);
mp->m_logdev_targp = (logdev && logdev != ddev) ?
xfs_alloc_buftarg(logdev) : mp->m_ddev_targp;
/*
* Setup flags based on mount(2) options and then the superblock
*/
error = xfs_start_flags(vfsp, args, mp);
if (error)
goto error;
error = xfs_readsb(mp);
if (error)
goto error;
error = xfs_finish_flags(vfsp, args, mp);
if (error) {
xfs_freesb(mp);
goto error;
}
/*
* Setup xfs_mount buffer target pointers based on superblock
*/
xfs_setsize_buftarg(mp->m_ddev_targp, mp->m_sb.sb_blocksize,
mp->m_sb.sb_sectsize);
if (logdev && logdev != ddev) {
unsigned int log_sector_size = BBSIZE;
if (XFS_SB_VERSION_HASSECTOR(&mp->m_sb))
log_sector_size = mp->m_sb.sb_logsectsize;
xfs_setsize_buftarg(mp->m_logdev_targp, mp->m_sb.sb_blocksize,
log_sector_size);
}
if (rtdev)
xfs_setsize_buftarg(mp->m_rtdev_targp, mp->m_sb.sb_blocksize,
mp->m_sb.sb_blocksize);
if (!(error = XFS_IOINIT(vfsp, args, flags)))
return 0;
error:
xfs_binval(mp->m_ddev_targp);
if (logdev != NULL && logdev != ddev) {
xfs_binval(mp->m_logdev_targp);
}
if (rtdev != NULL) {
xfs_binval(mp->m_rtdev_targp);
}
xfs_unmountfs_close(mp, NULL);
return error;
}
