/*
* xfs sync routine for internal use
*
* This routine supports all of the flags defined for the generic VFS_SYNC
* interface as explained above under xfs_sync. In the interests of not
* changing interfaces within the 6.5 family, additional internallly-
* required functions are specified within a separate xflags parameter,
* only available by calling this routine.
*
*/
int
xfs_syncsub(
xfs_mount_t *mp,
int flags,
int xflags,
int *bypassed)
{
int error = 0;
int last_error = 0;
uint log_flags = XFS_LOG_FORCE;
xfs_buf_t *bp;
xfs_buf_log_item_t *bip;
/*
* Sync out the log. This ensures that the log is periodically
* flushed even if there is not enough activity to fill it up.
*/
if (flags & SYNC_WAIT)
log_flags |= XFS_LOG_SYNC;
xfs_log_force(mp, (xfs_lsn_t)0, log_flags);
if (flags & (SYNC_ATTR|SYNC_DELWRI)) {
if (flags & SYNC_BDFLUSH)
xfs_finish_reclaim_all(mp, 1);
else
error = xfs_sync_inodes(mp, flags, xflags, bypassed);
}
/*
* Flushing out dirty data above probably generated more
* log activity, so if this isn't vfs_sync() then flush
* the log again.
*/
if (flags & SYNC_DELWRI) {
xfs_log_force(mp, (xfs_lsn_t)0, log_flags);
}
if (flags & SYNC_FSDATA) {
/*
* If this is vfs_sync() then only sync the superblock
* if we can lock it without sleeping and it is not pinned.
*/
if (flags & SYNC_BDFLUSH) {
bp = xfs_getsb(mp, XFS_BUF_TRYLOCK);
if (bp != NULL) {
bip = XFS_BUF_FSPRIVATE(bp,xfs_buf_log_item_t*);
if ((bip != NULL) &&
xfs_buf_item_dirty(bip)) {
if (!(XFS_BUF_ISPINNED(bp))) {
XFS_BUF_ASYNC(bp);
error = xfs_bwrite(mp, bp);
} else {
xfs_buf_relse(bp);
}
} else {
xfs_buf_relse(bp);
}
}
} else {
STATIC int
xfs_fs_quota_sync(
struct super_block *sb,
int type)
{
struct xfs_mount *mp = XFS_M(sb);
if (!XFS_IS_QUOTA_RUNNING(mp))
return -ENOSYS;
return -xfs_sync_inodes(mp, SYNC_DELWRI);
}
/*
* 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);
}
