diff options
author | Nathan Scott <nathans@sgi.com> | 2006-06-09 15:29:58 +1000 |
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committer | Nathan Scott <nathans@sgi.com> | 2006-06-09 15:29:58 +1000 |
commit | 932f2c323196c214e645d5a572a1d7b562c0f93f (patch) | |
tree | 3129798a4b60a90f55165030ec434ec106cd0373 /fs/xfs/quota/xfs_qm_bhv.c | |
parent | b65745205fc00d8c7722ec74e9bd955f3861c7e2 (diff) | |
download | linux-932f2c323196c214e645d5a572a1d7b562c0f93f.tar.bz2 |
[XFS] statvfs component of directory/project quota support, code
originally by Glen.
SGI-PV: 932952
SGI-Modid: xfs-linux-melb:xfs-kern:26105a
Signed-off-by: Nathan Scott <nathans@sgi.com>
Diffstat (limited to 'fs/xfs/quota/xfs_qm_bhv.c')
-rw-r--r-- | fs/xfs/quota/xfs_qm_bhv.c | 58 |
1 files changed, 57 insertions, 1 deletions
diff --git a/fs/xfs/quota/xfs_qm_bhv.c b/fs/xfs/quota/xfs_qm_bhv.c index 6838b36d95a9..181dd90b29ce 100644 --- a/fs/xfs/quota/xfs_qm_bhv.c +++ b/fs/xfs/quota/xfs_qm_bhv.c @@ -1,5 +1,5 @@ /* - * Copyright (c) 2000-2005 Silicon Graphics, Inc. + * Copyright (c) 2000-2006 Silicon Graphics, Inc. * All Rights Reserved. * * This program is free software; you can redistribute it and/or @@ -185,6 +185,61 @@ xfs_qm_mount( return error; } +/* + * Directory tree accounting is implemented using project quotas, where + * the project identifier is inherited from parent directories. + * A statvfs (df, etc.) of a directory that is using project quota should + * return a statvfs of the project, not the entire filesystem. + * This makes such trees appear as if they are filesystems in themselves. + */ +STATIC int +xfs_qm_statvfs( + struct bhv_desc *bhv, + xfs_statfs_t *statp, + struct vnode *vnode) +{ + xfs_mount_t *mp; + xfs_inode_t *ip; + xfs_dquot_t *dqp; + xfs_disk_dquot_t *dp; + __uint64_t limit; + int error; + + error = PVFS_STATVFS(BHV_NEXT(bhv), statp, vnode); + if (error || !vnode) + return error; + + mp = XFS_BHVTOM(bhv); + ip = xfs_vtoi(vnode); + + if (!(ip->i_d.di_flags & XFS_DIFLAG_PROJINHERIT)) + return 0; + if (!(mp->m_qflags & XFS_PQUOTA_ACCT)) + return 0; + if (!(mp->m_qflags & XFS_OQUOTA_ENFD)) + return 0; + + if (xfs_qm_dqget(mp, NULL, ip->i_d.di_projid, XFS_DQ_PROJ, 0, &dqp)) + return 0; + dp = &dqp->q_core; + + limit = dp->d_blk_softlimit ? dp->d_blk_softlimit : dp->d_blk_hardlimit; + if (limit && statp->f_blocks > limit) { + statp->f_blocks = limit; + statp->f_bfree = (statp->f_blocks > dp->d_bcount) ? + (statp->f_blocks - dp->d_bcount) : 0; + } + limit = dp->d_ino_softlimit ? dp->d_ino_softlimit : dp->d_ino_hardlimit; + if (limit && statp->f_files > limit) { + statp->f_files = limit; + statp->f_ffree = (statp->f_files > dp->d_icount) ? + (statp->f_ffree - dp->d_icount) : 0; + } + + xfs_qm_dqput(dqp); + return 0; +} + STATIC int xfs_qm_syncall( struct bhv_desc *bhv, @@ -351,6 +406,7 @@ struct bhv_vfsops xfs_qmops = { { .vfs_parseargs = xfs_qm_parseargs, .vfs_showargs = xfs_qm_showargs, .vfs_mount = xfs_qm_mount, + .vfs_statvfs = xfs_qm_statvfs, .vfs_sync = xfs_qm_syncall, .vfs_quotactl = xfs_qm_quotactl, }, }; |