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1275 |
phoenix |
/*
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* Copyright (c) 2000-2002 Silicon Graphics, Inc. All Rights Reserved.
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of version 2 of the GNU General Public License as
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* published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it would be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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*
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* Further, this software is distributed without any warranty that it is
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* free of the rightful claim of any third person regarding infringement
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* or the like. Any license provided herein, whether implied or
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* otherwise, applies only to this software file. Patent licenses, if
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* any, provided herein do not apply to combinations of this program with
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* other software, or any other product whatsoever.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write the Free Software Foundation, Inc., 59
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* Temple Place - Suite 330, Boston MA 02111-1307, USA.
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*
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* Contact information: Silicon Graphics, Inc., 1600 Amphitheatre Pkwy,
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* Mountain View, CA 94043, or:
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*
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* http://www.sgi.com
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*
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* For further information regarding this notice, see:
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*
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* http://oss.sgi.com/projects/GenInfo/SGIGPLNoticeExplan/
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*/
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#include "xfs.h"
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#include "xfs_macros.h"
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#include "xfs_types.h"
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#include "xfs_inum.h"
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#include "xfs_log.h"
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#include "xfs_trans.h"
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#include "xfs_sb.h"
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#include "xfs_dir.h"
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#include "xfs_dmapi.h"
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#include "xfs_mount.h"
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#include "xfs_ag.h"
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#include "xfs_alloc_btree.h"
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#include "xfs_bmap_btree.h"
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#include "xfs_ialloc_btree.h"
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#include "xfs_btree.h"
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#include "xfs_error.h"
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#include "xfs_alloc.h"
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#include "xfs_ialloc.h"
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#include "xfs_fsops.h"
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#include "xfs_itable.h"
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#include "xfs_rw.h"
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#include "xfs_refcache.h"
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#include "xfs_trans_space.h"
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#include "xfs_rtalloc.h"
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#include "xfs_dir2.h"
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#include "xfs_attr_sf.h"
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#include "xfs_dir_sf.h"
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#include "xfs_dir2_sf.h"
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#include "xfs_dinode.h"
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#include "xfs_inode.h"
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#include "xfs_inode_item.h"
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/*
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* File system operations
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*/
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int
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xfs_fs_geometry(
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xfs_mount_t *mp,
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xfs_fsop_geom_t *geo,
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int new_version)
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{
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geo->blocksize = mp->m_sb.sb_blocksize;
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geo->rtextsize = mp->m_sb.sb_rextsize;
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geo->agblocks = mp->m_sb.sb_agblocks;
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geo->agcount = mp->m_sb.sb_agcount;
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geo->logblocks = mp->m_sb.sb_logblocks;
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geo->sectsize = mp->m_sb.sb_sectsize;
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geo->inodesize = mp->m_sb.sb_inodesize;
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geo->imaxpct = mp->m_sb.sb_imax_pct;
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geo->datablocks = mp->m_sb.sb_dblocks;
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geo->rtblocks = mp->m_sb.sb_rblocks;
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geo->rtextents = mp->m_sb.sb_rextents;
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geo->logstart = mp->m_sb.sb_logstart;
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ASSERT(sizeof(geo->uuid)==sizeof(mp->m_sb.sb_uuid));
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memcpy(geo->uuid, &mp->m_sb.sb_uuid, sizeof(mp->m_sb.sb_uuid));
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if (new_version >= 2) {
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geo->sunit = mp->m_sb.sb_unit;
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geo->swidth = mp->m_sb.sb_width;
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}
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if (new_version >= 3) {
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geo->version = XFS_FSOP_GEOM_VERSION;
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geo->flags =
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(XFS_SB_VERSION_HASATTR(&mp->m_sb) ?
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XFS_FSOP_GEOM_FLAGS_ATTR : 0) |
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(XFS_SB_VERSION_HASNLINK(&mp->m_sb) ?
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XFS_FSOP_GEOM_FLAGS_NLINK : 0) |
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(XFS_SB_VERSION_HASQUOTA(&mp->m_sb) ?
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XFS_FSOP_GEOM_FLAGS_QUOTA : 0) |
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(XFS_SB_VERSION_HASALIGN(&mp->m_sb) ?
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XFS_FSOP_GEOM_FLAGS_IALIGN : 0) |
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(XFS_SB_VERSION_HASDALIGN(&mp->m_sb) ?
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XFS_FSOP_GEOM_FLAGS_DALIGN : 0) |
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(XFS_SB_VERSION_HASSHARED(&mp->m_sb) ?
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XFS_FSOP_GEOM_FLAGS_SHARED : 0) |
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(XFS_SB_VERSION_HASEXTFLGBIT(&mp->m_sb) ?
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XFS_FSOP_GEOM_FLAGS_EXTFLG : 0) |
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(XFS_SB_VERSION_HASDIRV2(&mp->m_sb) ?
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XFS_FSOP_GEOM_FLAGS_DIRV2 : 0) |
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(XFS_SB_VERSION_HASSECTOR(&mp->m_sb) ?
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XFS_FSOP_GEOM_FLAGS_SECTOR : 0);
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geo->logsectsize = XFS_SB_VERSION_HASSECTOR(&mp->m_sb) ?
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mp->m_sb.sb_logsectsize : BBSIZE;
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geo->rtsectsize = mp->m_sb.sb_blocksize;
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geo->dirblocksize = mp->m_dirblksize;
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}
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if (new_version >= 4) {
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geo->flags |=
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(XFS_SB_VERSION_HASLOGV2(&mp->m_sb) ?
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XFS_FSOP_GEOM_FLAGS_LOGV2 : 0);
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geo->logsunit = mp->m_sb.sb_logsunit;
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}
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return 0;
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}
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static int
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xfs_growfs_data_private(
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xfs_mount_t *mp, /* mount point for filesystem */
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xfs_growfs_data_t *in) /* growfs data input struct */
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{
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xfs_agf_t *agf;
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xfs_agi_t *agi;
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xfs_agnumber_t agno;
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xfs_extlen_t agsize;
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xfs_extlen_t tmpsize;
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xfs_alloc_rec_t *arec;
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xfs_btree_sblock_t *block;
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xfs_buf_t *bp;
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int bucket;
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int dpct;
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int error;
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xfs_agnumber_t nagcount;
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xfs_rfsblock_t nb, nb_mod;
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xfs_rfsblock_t new;
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xfs_rfsblock_t nfree;
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xfs_agnumber_t oagcount;
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int pct;
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xfs_sb_t *sbp;
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xfs_trans_t *tp;
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nb = in->newblocks;
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pct = in->imaxpct;
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if (nb < mp->m_sb.sb_dblocks || pct < 0 || pct > 100)
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return XFS_ERROR(EINVAL);
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dpct = pct - mp->m_sb.sb_imax_pct;
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error = xfs_read_buf(mp, mp->m_ddev_targp,
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XFS_FSB_TO_BB(mp, nb) - XFS_FSS_TO_BB(mp, 1),
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XFS_FSS_TO_BB(mp, 1), 0, &bp);
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if (error)
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return error;
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ASSERT(bp);
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xfs_buf_relse(bp);
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new = nb; /* use new as a temporary here */
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nb_mod = do_div(new, mp->m_sb.sb_agblocks);
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nagcount = new + (nb_mod != 0);
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if (nb_mod && nb_mod < XFS_MIN_AG_BLOCKS) {
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nagcount--;
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nb = nagcount * mp->m_sb.sb_agblocks;
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if (nb < mp->m_sb.sb_dblocks)
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return XFS_ERROR(EINVAL);
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}
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new = nb - mp->m_sb.sb_dblocks;
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oagcount = mp->m_sb.sb_agcount;
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| 177 |
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if (nagcount > oagcount) {
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| 178 |
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down_write(&mp->m_peraglock);
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| 179 |
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mp->m_perag = kmem_realloc(mp->m_perag,
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| 180 |
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sizeof(xfs_perag_t) * nagcount,
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sizeof(xfs_perag_t) * oagcount,
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KM_SLEEP);
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memset(&mp->m_perag[oagcount], 0,
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(nagcount - oagcount) * sizeof(xfs_perag_t));
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| 185 |
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mp->m_flags |= XFS_MOUNT_32BITINODES;
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| 186 |
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xfs_initialize_perag(mp, nagcount);
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| 187 |
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up_write(&mp->m_peraglock);
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| 188 |
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}
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| 189 |
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tp = xfs_trans_alloc(mp, XFS_TRANS_GROWFS);
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| 190 |
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if ((error = xfs_trans_reserve(tp, XFS_GROWFS_SPACE_RES(mp),
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| 191 |
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XFS_GROWDATA_LOG_RES(mp), 0, 0, 0))) {
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| 192 |
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xfs_trans_cancel(tp, 0);
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return error;
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}
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| 196 |
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nfree = 0;
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for (agno = nagcount - 1; agno >= oagcount; agno--, new -= agsize) {
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| 198 |
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/*
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* AG freelist header block
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| 200 |
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*/
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| 201 |
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bp = xfs_buf_get(mp->m_ddev_targp,
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| 202 |
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XFS_AG_DADDR(mp, agno, XFS_AGF_DADDR(mp)),
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| 203 |
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XFS_FSS_TO_BB(mp, 1), 0);
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| 204 |
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agf = XFS_BUF_TO_AGF(bp);
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| 205 |
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memset(agf, 0, mp->m_sb.sb_sectsize);
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| 206 |
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INT_SET(agf->agf_magicnum, ARCH_CONVERT, XFS_AGF_MAGIC);
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| 207 |
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INT_SET(agf->agf_versionnum, ARCH_CONVERT, XFS_AGF_VERSION);
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| 208 |
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INT_SET(agf->agf_seqno, ARCH_CONVERT, agno);
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| 209 |
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if (agno == nagcount - 1)
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| 210 |
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agsize =
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| 211 |
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nb -
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| 212 |
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(agno * (xfs_rfsblock_t)mp->m_sb.sb_agblocks);
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| 213 |
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else
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| 214 |
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agsize = mp->m_sb.sb_agblocks;
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| 215 |
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INT_SET(agf->agf_length, ARCH_CONVERT, agsize);
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| 216 |
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INT_SET(agf->agf_roots[XFS_BTNUM_BNOi], ARCH_CONVERT,
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| 217 |
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XFS_BNO_BLOCK(mp));
|
| 218 |
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INT_SET(agf->agf_roots[XFS_BTNUM_CNTi], ARCH_CONVERT,
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| 219 |
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XFS_CNT_BLOCK(mp));
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| 220 |
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INT_SET(agf->agf_levels[XFS_BTNUM_BNOi], ARCH_CONVERT, 1);
|
| 221 |
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INT_SET(agf->agf_levels[XFS_BTNUM_CNTi], ARCH_CONVERT, 1);
|
| 222 |
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INT_ZERO(agf->agf_flfirst, ARCH_CONVERT);
|
| 223 |
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INT_SET(agf->agf_fllast, ARCH_CONVERT, XFS_AGFL_SIZE(mp) - 1);
|
| 224 |
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INT_ZERO(agf->agf_flcount, ARCH_CONVERT);
|
| 225 |
|
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tmpsize = agsize - XFS_PREALLOC_BLOCKS(mp);
|
| 226 |
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INT_SET(agf->agf_freeblks, ARCH_CONVERT, tmpsize);
|
| 227 |
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INT_SET(agf->agf_longest, ARCH_CONVERT, tmpsize);
|
| 228 |
|
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error = xfs_bwrite(mp, bp);
|
| 229 |
|
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if (error) {
|
| 230 |
|
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goto error0;
|
| 231 |
|
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}
|
| 232 |
|
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/*
|
| 233 |
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* AG inode header block
|
| 234 |
|
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*/
|
| 235 |
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bp = xfs_buf_get(mp->m_ddev_targp,
|
| 236 |
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XFS_AG_DADDR(mp, agno, XFS_AGI_DADDR(mp)),
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| 237 |
|
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XFS_FSS_TO_BB(mp, 1), 0);
|
| 238 |
|
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agi = XFS_BUF_TO_AGI(bp);
|
| 239 |
|
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memset(agi, 0, mp->m_sb.sb_sectsize);
|
| 240 |
|
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INT_SET(agi->agi_magicnum, ARCH_CONVERT, XFS_AGI_MAGIC);
|
| 241 |
|
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INT_SET(agi->agi_versionnum, ARCH_CONVERT, XFS_AGI_VERSION);
|
| 242 |
|
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INT_SET(agi->agi_seqno, ARCH_CONVERT, agno);
|
| 243 |
|
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INT_SET(agi->agi_length, ARCH_CONVERT, agsize);
|
| 244 |
|
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INT_ZERO(agi->agi_count, ARCH_CONVERT);
|
| 245 |
|
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INT_SET(agi->agi_root, ARCH_CONVERT, XFS_IBT_BLOCK(mp));
|
| 246 |
|
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INT_SET(agi->agi_level, ARCH_CONVERT, 1);
|
| 247 |
|
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INT_ZERO(agi->agi_freecount, ARCH_CONVERT);
|
| 248 |
|
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INT_SET(agi->agi_newino, ARCH_CONVERT, NULLAGINO);
|
| 249 |
|
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INT_SET(agi->agi_dirino, ARCH_CONVERT, NULLAGINO);
|
| 250 |
|
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for (bucket = 0; bucket < XFS_AGI_UNLINKED_BUCKETS; bucket++)
|
| 251 |
|
|
INT_SET(agi->agi_unlinked[bucket], ARCH_CONVERT,
|
| 252 |
|
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NULLAGINO);
|
| 253 |
|
|
error = xfs_bwrite(mp, bp);
|
| 254 |
|
|
if (error) {
|
| 255 |
|
|
goto error0;
|
| 256 |
|
|
}
|
| 257 |
|
|
/*
|
| 258 |
|
|
* BNO btree root block
|
| 259 |
|
|
*/
|
| 260 |
|
|
bp = xfs_buf_get(mp->m_ddev_targp,
|
| 261 |
|
|
XFS_AGB_TO_DADDR(mp, agno, XFS_BNO_BLOCK(mp)),
|
| 262 |
|
|
BTOBB(mp->m_sb.sb_blocksize), 0);
|
| 263 |
|
|
block = XFS_BUF_TO_SBLOCK(bp);
|
| 264 |
|
|
memset(block, 0, mp->m_sb.sb_blocksize);
|
| 265 |
|
|
INT_SET(block->bb_magic, ARCH_CONVERT, XFS_ABTB_MAGIC);
|
| 266 |
|
|
INT_ZERO(block->bb_level, ARCH_CONVERT);
|
| 267 |
|
|
INT_SET(block->bb_numrecs, ARCH_CONVERT, 1);
|
| 268 |
|
|
INT_SET(block->bb_leftsib, ARCH_CONVERT, NULLAGBLOCK);
|
| 269 |
|
|
INT_SET(block->bb_rightsib, ARCH_CONVERT, NULLAGBLOCK);
|
| 270 |
|
|
arec = XFS_BTREE_REC_ADDR(mp->m_sb.sb_blocksize, xfs_alloc,
|
| 271 |
|
|
block, 1, mp->m_alloc_mxr[0]);
|
| 272 |
|
|
INT_SET(arec->ar_startblock, ARCH_CONVERT,
|
| 273 |
|
|
XFS_PREALLOC_BLOCKS(mp));
|
| 274 |
|
|
INT_SET(arec->ar_blockcount, ARCH_CONVERT,
|
| 275 |
|
|
agsize - INT_GET(arec->ar_startblock, ARCH_CONVERT));
|
| 276 |
|
|
error = xfs_bwrite(mp, bp);
|
| 277 |
|
|
if (error) {
|
| 278 |
|
|
goto error0;
|
| 279 |
|
|
}
|
| 280 |
|
|
/*
|
| 281 |
|
|
* CNT btree root block
|
| 282 |
|
|
*/
|
| 283 |
|
|
bp = xfs_buf_get(mp->m_ddev_targp,
|
| 284 |
|
|
XFS_AGB_TO_DADDR(mp, agno, XFS_CNT_BLOCK(mp)),
|
| 285 |
|
|
BTOBB(mp->m_sb.sb_blocksize), 0);
|
| 286 |
|
|
block = XFS_BUF_TO_SBLOCK(bp);
|
| 287 |
|
|
memset(block, 0, mp->m_sb.sb_blocksize);
|
| 288 |
|
|
INT_SET(block->bb_magic, ARCH_CONVERT, XFS_ABTC_MAGIC);
|
| 289 |
|
|
INT_ZERO(block->bb_level, ARCH_CONVERT);
|
| 290 |
|
|
INT_SET(block->bb_numrecs, ARCH_CONVERT, 1);
|
| 291 |
|
|
INT_SET(block->bb_leftsib, ARCH_CONVERT, NULLAGBLOCK);
|
| 292 |
|
|
INT_SET(block->bb_rightsib, ARCH_CONVERT, NULLAGBLOCK);
|
| 293 |
|
|
arec = XFS_BTREE_REC_ADDR(mp->m_sb.sb_blocksize, xfs_alloc,
|
| 294 |
|
|
block, 1, mp->m_alloc_mxr[0]);
|
| 295 |
|
|
INT_SET(arec->ar_startblock, ARCH_CONVERT,
|
| 296 |
|
|
XFS_PREALLOC_BLOCKS(mp));
|
| 297 |
|
|
INT_SET(arec->ar_blockcount, ARCH_CONVERT,
|
| 298 |
|
|
agsize - INT_GET(arec->ar_startblock, ARCH_CONVERT));
|
| 299 |
|
|
nfree += INT_GET(arec->ar_blockcount, ARCH_CONVERT);
|
| 300 |
|
|
error = xfs_bwrite(mp, bp);
|
| 301 |
|
|
if (error) {
|
| 302 |
|
|
goto error0;
|
| 303 |
|
|
}
|
| 304 |
|
|
/*
|
| 305 |
|
|
* INO btree root block
|
| 306 |
|
|
*/
|
| 307 |
|
|
bp = xfs_buf_get(mp->m_ddev_targp,
|
| 308 |
|
|
XFS_AGB_TO_DADDR(mp, agno, XFS_IBT_BLOCK(mp)),
|
| 309 |
|
|
BTOBB(mp->m_sb.sb_blocksize), 0);
|
| 310 |
|
|
block = XFS_BUF_TO_SBLOCK(bp);
|
| 311 |
|
|
memset(block, 0, mp->m_sb.sb_blocksize);
|
| 312 |
|
|
INT_SET(block->bb_magic, ARCH_CONVERT, XFS_IBT_MAGIC);
|
| 313 |
|
|
INT_ZERO(block->bb_level, ARCH_CONVERT);
|
| 314 |
|
|
INT_ZERO(block->bb_numrecs, ARCH_CONVERT);
|
| 315 |
|
|
INT_SET(block->bb_leftsib, ARCH_CONVERT, NULLAGBLOCK);
|
| 316 |
|
|
INT_SET(block->bb_rightsib, ARCH_CONVERT, NULLAGBLOCK);
|
| 317 |
|
|
error = xfs_bwrite(mp, bp);
|
| 318 |
|
|
if (error) {
|
| 319 |
|
|
goto error0;
|
| 320 |
|
|
}
|
| 321 |
|
|
}
|
| 322 |
|
|
xfs_trans_agblocks_delta(tp, nfree);
|
| 323 |
|
|
/*
|
| 324 |
|
|
* There are new blocks in the old last a.g.
|
| 325 |
|
|
*/
|
| 326 |
|
|
if (new) {
|
| 327 |
|
|
/*
|
| 328 |
|
|
* Change the agi length.
|
| 329 |
|
|
*/
|
| 330 |
|
|
error = xfs_ialloc_read_agi(mp, tp, agno, &bp);
|
| 331 |
|
|
if (error) {
|
| 332 |
|
|
goto error0;
|
| 333 |
|
|
}
|
| 334 |
|
|
ASSERT(bp);
|
| 335 |
|
|
agi = XFS_BUF_TO_AGI(bp);
|
| 336 |
|
|
INT_MOD(agi->agi_length, ARCH_CONVERT, new);
|
| 337 |
|
|
ASSERT(nagcount == oagcount ||
|
| 338 |
|
|
INT_GET(agi->agi_length, ARCH_CONVERT) ==
|
| 339 |
|
|
mp->m_sb.sb_agblocks);
|
| 340 |
|
|
xfs_ialloc_log_agi(tp, bp, XFS_AGI_LENGTH);
|
| 341 |
|
|
/*
|
| 342 |
|
|
* Change agf length.
|
| 343 |
|
|
*/
|
| 344 |
|
|
error = xfs_alloc_read_agf(mp, tp, agno, 0, &bp);
|
| 345 |
|
|
if (error) {
|
| 346 |
|
|
goto error0;
|
| 347 |
|
|
}
|
| 348 |
|
|
ASSERT(bp);
|
| 349 |
|
|
agf = XFS_BUF_TO_AGF(bp);
|
| 350 |
|
|
INT_MOD(agf->agf_length, ARCH_CONVERT, new);
|
| 351 |
|
|
ASSERT(INT_GET(agf->agf_length, ARCH_CONVERT) ==
|
| 352 |
|
|
INT_GET(agi->agi_length, ARCH_CONVERT));
|
| 353 |
|
|
/*
|
| 354 |
|
|
* Free the new space.
|
| 355 |
|
|
*/
|
| 356 |
|
|
error = xfs_free_extent(tp, XFS_AGB_TO_FSB(mp, agno,
|
| 357 |
|
|
INT_GET(agf->agf_length, ARCH_CONVERT) - new), new);
|
| 358 |
|
|
if (error) {
|
| 359 |
|
|
goto error0;
|
| 360 |
|
|
}
|
| 361 |
|
|
}
|
| 362 |
|
|
if (nagcount > oagcount)
|
| 363 |
|
|
xfs_trans_mod_sb(tp, XFS_TRANS_SB_AGCOUNT, nagcount - oagcount);
|
| 364 |
|
|
if (nb > mp->m_sb.sb_dblocks)
|
| 365 |
|
|
xfs_trans_mod_sb(tp, XFS_TRANS_SB_DBLOCKS,
|
| 366 |
|
|
nb - mp->m_sb.sb_dblocks);
|
| 367 |
|
|
if (nfree)
|
| 368 |
|
|
xfs_trans_mod_sb(tp, XFS_TRANS_SB_FDBLOCKS, nfree);
|
| 369 |
|
|
if (dpct)
|
| 370 |
|
|
xfs_trans_mod_sb(tp, XFS_TRANS_SB_IMAXPCT, dpct);
|
| 371 |
|
|
error = xfs_trans_commit(tp, 0, NULL);
|
| 372 |
|
|
if (error) {
|
| 373 |
|
|
return error;
|
| 374 |
|
|
}
|
| 375 |
|
|
if (mp->m_sb.sb_imax_pct) {
|
| 376 |
|
|
__uint64_t icount = mp->m_sb.sb_dblocks * mp->m_sb.sb_imax_pct;
|
| 377 |
|
|
do_div(icount, 100);
|
| 378 |
|
|
mp->m_maxicount = icount << mp->m_sb.sb_inopblog;
|
| 379 |
|
|
} else
|
| 380 |
|
|
mp->m_maxicount = 0;
|
| 381 |
|
|
for (agno = 1; agno < nagcount; agno++) {
|
| 382 |
|
|
error = xfs_read_buf(mp, mp->m_ddev_targp,
|
| 383 |
|
|
XFS_AGB_TO_DADDR(mp, agno, XFS_SB_BLOCK(mp)),
|
| 384 |
|
|
XFS_FSS_TO_BB(mp, 1), 0, &bp);
|
| 385 |
|
|
if (error) {
|
| 386 |
|
|
xfs_fs_cmn_err(CE_WARN, mp,
|
| 387 |
|
|
"error %d reading secondary superblock for ag %d",
|
| 388 |
|
|
error, agno);
|
| 389 |
|
|
break;
|
| 390 |
|
|
}
|
| 391 |
|
|
sbp = XFS_BUF_TO_SBP(bp);
|
| 392 |
|
|
xfs_xlatesb(sbp, &mp->m_sb, -1, ARCH_CONVERT, XFS_SB_ALL_BITS);
|
| 393 |
|
|
/*
|
| 394 |
|
|
* If we get an error writing out the alternate superblocks,
|
| 395 |
|
|
* just issue a warning and continue. The real work is
|
| 396 |
|
|
* already done and committed.
|
| 397 |
|
|
*/
|
| 398 |
|
|
if (!(error = xfs_bwrite(mp, bp))) {
|
| 399 |
|
|
continue;
|
| 400 |
|
|
} else {
|
| 401 |
|
|
xfs_fs_cmn_err(CE_WARN, mp,
|
| 402 |
|
|
"write error %d updating secondary superblock for ag %d",
|
| 403 |
|
|
error, agno);
|
| 404 |
|
|
break; /* no point in continuing */
|
| 405 |
|
|
}
|
| 406 |
|
|
}
|
| 407 |
|
|
return 0;
|
| 408 |
|
|
|
| 409 |
|
|
error0:
|
| 410 |
|
|
xfs_trans_cancel(tp, XFS_TRANS_ABORT);
|
| 411 |
|
|
return error;
|
| 412 |
|
|
}
|
| 413 |
|
|
|
| 414 |
|
|
static int
|
| 415 |
|
|
xfs_growfs_log_private(
|
| 416 |
|
|
xfs_mount_t *mp, /* mount point for filesystem */
|
| 417 |
|
|
xfs_growfs_log_t *in) /* growfs log input struct */
|
| 418 |
|
|
{
|
| 419 |
|
|
xfs_extlen_t nb;
|
| 420 |
|
|
|
| 421 |
|
|
nb = in->newblocks;
|
| 422 |
|
|
if (nb < XFS_MIN_LOG_BLOCKS || nb < XFS_B_TO_FSB(mp, XFS_MIN_LOG_BYTES))
|
| 423 |
|
|
return XFS_ERROR(EINVAL);
|
| 424 |
|
|
if (nb == mp->m_sb.sb_logblocks &&
|
| 425 |
|
|
in->isint == (mp->m_sb.sb_logstart != 0))
|
| 426 |
|
|
return XFS_ERROR(EINVAL);
|
| 427 |
|
|
/*
|
| 428 |
|
|
* Moving the log is hard, need new interfaces to sync
|
| 429 |
|
|
* the log first, hold off all activity while moving it.
|
| 430 |
|
|
* Can have shorter or longer log in the same space,
|
| 431 |
|
|
* or transform internal to external log or vice versa.
|
| 432 |
|
|
*/
|
| 433 |
|
|
return XFS_ERROR(ENOSYS);
|
| 434 |
|
|
}
|
| 435 |
|
|
|
| 436 |
|
|
/*
|
| 437 |
|
|
* protected versions of growfs function acquire and release locks on the mount
|
| 438 |
|
|
* point - exported through ioctls: XFS_IOC_FSGROWFSDATA, XFS_IOC_FSGROWFSLOG,
|
| 439 |
|
|
* XFS_IOC_FSGROWFSRT
|
| 440 |
|
|
*/
|
| 441 |
|
|
|
| 442 |
|
|
|
| 443 |
|
|
int
|
| 444 |
|
|
xfs_growfs_data(
|
| 445 |
|
|
xfs_mount_t *mp,
|
| 446 |
|
|
xfs_growfs_data_t *in)
|
| 447 |
|
|
{
|
| 448 |
|
|
int error;
|
| 449 |
|
|
if (!cpsema(&mp->m_growlock))
|
| 450 |
|
|
return XFS_ERROR(EWOULDBLOCK);
|
| 451 |
|
|
error = xfs_growfs_data_private(mp, in);
|
| 452 |
|
|
vsema(&mp->m_growlock);
|
| 453 |
|
|
return error;
|
| 454 |
|
|
}
|
| 455 |
|
|
|
| 456 |
|
|
int
|
| 457 |
|
|
xfs_growfs_log(
|
| 458 |
|
|
xfs_mount_t *mp,
|
| 459 |
|
|
xfs_growfs_log_t *in)
|
| 460 |
|
|
{
|
| 461 |
|
|
int error;
|
| 462 |
|
|
if (!cpsema(&mp->m_growlock))
|
| 463 |
|
|
return XFS_ERROR(EWOULDBLOCK);
|
| 464 |
|
|
error = xfs_growfs_log_private(mp, in);
|
| 465 |
|
|
vsema(&mp->m_growlock);
|
| 466 |
|
|
return error;
|
| 467 |
|
|
}
|
| 468 |
|
|
|
| 469 |
|
|
/*
|
| 470 |
|
|
* exported through ioctl XFS_IOC_FSCOUNTS
|
| 471 |
|
|
*/
|
| 472 |
|
|
|
| 473 |
|
|
int
|
| 474 |
|
|
xfs_fs_counts(
|
| 475 |
|
|
xfs_mount_t *mp,
|
| 476 |
|
|
xfs_fsop_counts_t *cnt)
|
| 477 |
|
|
{
|
| 478 |
|
|
unsigned long s;
|
| 479 |
|
|
|
| 480 |
|
|
s = XFS_SB_LOCK(mp);
|
| 481 |
|
|
cnt->freedata = mp->m_sb.sb_fdblocks;
|
| 482 |
|
|
cnt->freertx = mp->m_sb.sb_frextents;
|
| 483 |
|
|
cnt->freeino = mp->m_sb.sb_ifree;
|
| 484 |
|
|
cnt->allocino = mp->m_sb.sb_icount;
|
| 485 |
|
|
XFS_SB_UNLOCK(mp, s);
|
| 486 |
|
|
return 0;
|
| 487 |
|
|
}
|
| 488 |
|
|
|
| 489 |
|
|
/*
|
| 490 |
|
|
* exported through ioctl XFS_IOC_SET_RESBLKS & XFS_IOC_GET_RESBLKS
|
| 491 |
|
|
*
|
| 492 |
|
|
* xfs_reserve_blocks is called to set m_resblks
|
| 493 |
|
|
* in the in-core mount table. The number of unused reserved blocks
|
| 494 |
|
|
* is kept in m_resbls_avail.
|
| 495 |
|
|
*
|
| 496 |
|
|
* Reserve the requested number of blocks if available. Otherwise return
|
| 497 |
|
|
* as many as possible to satisfy the request. The actual number
|
| 498 |
|
|
* reserved are returned in outval
|
| 499 |
|
|
*
|
| 500 |
|
|
* A null inval pointer indicates that only the current reserved blocks
|
| 501 |
|
|
* available should be returned no settings are changed.
|
| 502 |
|
|
*/
|
| 503 |
|
|
|
| 504 |
|
|
int
|
| 505 |
|
|
xfs_reserve_blocks(
|
| 506 |
|
|
xfs_mount_t *mp,
|
| 507 |
|
|
__uint64_t *inval,
|
| 508 |
|
|
xfs_fsop_resblks_t *outval)
|
| 509 |
|
|
{
|
| 510 |
|
|
__uint64_t lcounter, delta;
|
| 511 |
|
|
__uint64_t request;
|
| 512 |
|
|
unsigned long s;
|
| 513 |
|
|
|
| 514 |
|
|
/* If inval is null, report current values and return */
|
| 515 |
|
|
|
| 516 |
|
|
if (inval == (__uint64_t *)NULL) {
|
| 517 |
|
|
outval->resblks = mp->m_resblks;
|
| 518 |
|
|
outval->resblks_avail = mp->m_resblks_avail;
|
| 519 |
|
|
return(0);
|
| 520 |
|
|
}
|
| 521 |
|
|
|
| 522 |
|
|
request = *inval;
|
| 523 |
|
|
s = XFS_SB_LOCK(mp);
|
| 524 |
|
|
|
| 525 |
|
|
/*
|
| 526 |
|
|
* If our previous reservation was larger than the current value,
|
| 527 |
|
|
* then move any unused blocks back to the free pool.
|
| 528 |
|
|
*/
|
| 529 |
|
|
|
| 530 |
|
|
if (mp->m_resblks > request) {
|
| 531 |
|
|
lcounter = mp->m_resblks_avail - request;
|
| 532 |
|
|
if (lcounter > 0) { /* release unused blocks */
|
| 533 |
|
|
mp->m_sb.sb_fdblocks += lcounter;
|
| 534 |
|
|
mp->m_resblks_avail -= lcounter;
|
| 535 |
|
|
}
|
| 536 |
|
|
mp->m_resblks = request;
|
| 537 |
|
|
} else {
|
| 538 |
|
|
delta = request - mp->m_resblks;
|
| 539 |
|
|
lcounter = mp->m_sb.sb_fdblocks;
|
| 540 |
|
|
lcounter -= delta;
|
| 541 |
|
|
if (lcounter < 0) {
|
| 542 |
|
|
/* We can't satisfy the request, just get what we can */
|
| 543 |
|
|
mp->m_resblks += mp->m_sb.sb_fdblocks;
|
| 544 |
|
|
mp->m_resblks_avail += mp->m_sb.sb_fdblocks;
|
| 545 |
|
|
mp->m_sb.sb_fdblocks = 0;
|
| 546 |
|
|
} else {
|
| 547 |
|
|
mp->m_sb.sb_fdblocks = lcounter;
|
| 548 |
|
|
mp->m_resblks = request;
|
| 549 |
|
|
mp->m_resblks_avail += delta;
|
| 550 |
|
|
}
|
| 551 |
|
|
}
|
| 552 |
|
|
|
| 553 |
|
|
outval->resblks = mp->m_resblks;
|
| 554 |
|
|
outval->resblks_avail = mp->m_resblks_avail;
|
| 555 |
|
|
XFS_SB_UNLOCK(mp, s);
|
| 556 |
|
|
return(0);
|
| 557 |
|
|
}
|
| 558 |
|
|
|
| 559 |
|
|
void
|
| 560 |
|
|
xfs_fs_log_dummy(xfs_mount_t *mp)
|
| 561 |
|
|
{
|
| 562 |
|
|
xfs_trans_t *tp;
|
| 563 |
|
|
xfs_inode_t *ip;
|
| 564 |
|
|
|
| 565 |
|
|
|
| 566 |
|
|
tp = _xfs_trans_alloc(mp, XFS_TRANS_DUMMY1);
|
| 567 |
|
|
atomic_inc(&mp->m_active_trans);
|
| 568 |
|
|
if (xfs_trans_reserve(tp, 0, XFS_ICHANGE_LOG_RES(mp), 0, 0, 0)) {
|
| 569 |
|
|
xfs_trans_cancel(tp, 0);
|
| 570 |
|
|
return;
|
| 571 |
|
|
}
|
| 572 |
|
|
|
| 573 |
|
|
ip = mp->m_rootip;
|
| 574 |
|
|
xfs_ilock(ip, XFS_ILOCK_EXCL);
|
| 575 |
|
|
|
| 576 |
|
|
xfs_trans_ijoin(tp, ip, XFS_ILOCK_EXCL);
|
| 577 |
|
|
xfs_trans_ihold(tp, ip);
|
| 578 |
|
|
xfs_trans_log_inode(tp, ip, XFS_ILOG_CORE);
|
| 579 |
|
|
xfs_trans_commit(tp, XFS_TRANS_SYNC, NULL);
|
| 580 |
|
|
|
| 581 |
|
|
xfs_iunlock(ip, XFS_ILOCK_EXCL);
|
| 582 |
|
|
}
|
| 583 |
|
|
|
| 584 |
|
|
int
|
| 585 |
|
|
xfs_fs_freeze(
|
| 586 |
|
|
xfs_mount_t *mp)
|
| 587 |
|
|
{
|
| 588 |
|
|
vfs_t *vfsp;
|
| 589 |
|
|
/*REFERENCED*/
|
| 590 |
|
|
int error;
|
| 591 |
|
|
|
| 592 |
|
|
vfsp = XFS_MTOVFS(mp);
|
| 593 |
|
|
|
| 594 |
|
|
/* Stop new writers */
|
| 595 |
|
|
xfs_start_freeze(mp, XFS_FREEZE_WRITE);
|
| 596 |
|
|
|
| 597 |
|
|
/* Flush the refcache */
|
| 598 |
|
|
xfs_refcache_purge_mp(mp);
|
| 599 |
|
|
|
| 600 |
|
|
/* Flush delalloc and delwri data */
|
| 601 |
|
|
VFS_SYNC(vfsp, SYNC_DELWRI|SYNC_WAIT, NULL, error);
|
| 602 |
|
|
|
| 603 |
|
|
/* Pause transaction subsystem */
|
| 604 |
|
|
xfs_start_freeze(mp, XFS_FREEZE_TRANS);
|
| 605 |
|
|
|
| 606 |
|
|
/* Flush any remaining inodes into buffers */
|
| 607 |
|
|
VFS_SYNC(vfsp, SYNC_ATTR|SYNC_WAIT, NULL, error);
|
| 608 |
|
|
|
| 609 |
|
|
/* Push all buffers out to disk */
|
| 610 |
|
|
xfs_binval(mp->m_ddev_targp);
|
| 611 |
|
|
if (mp->m_rtdev_targp) {
|
| 612 |
|
|
xfs_binval(mp->m_rtdev_targp);
|
| 613 |
|
|
}
|
| 614 |
|
|
|
| 615 |
|
|
/* Push the superblock and write an unmount record */
|
| 616 |
|
|
xfs_log_unmount_write(mp);
|
| 617 |
|
|
xfs_unmountfs_writesb(mp);
|
| 618 |
|
|
|
| 619 |
|
|
return 0;
|
| 620 |
|
|
}
|
| 621 |
|
|
|
| 622 |
|
|
int
|
| 623 |
|
|
xfs_fs_thaw(
|
| 624 |
|
|
xfs_mount_t *mp)
|
| 625 |
|
|
{
|
| 626 |
|
|
xfs_finish_freeze(mp);
|
| 627 |
|
|
return 0;
|
| 628 |
|
|
}
|
| 629 |
|
|
|
| 630 |
|
|
int
|
| 631 |
|
|
xfs_fs_goingdown(
|
| 632 |
|
|
xfs_mount_t *mp,
|
| 633 |
|
|
__uint32_t inflags)
|
| 634 |
|
|
{
|
| 635 |
|
|
switch (inflags)
|
| 636 |
|
|
{
|
| 637 |
|
|
case XFS_FSOP_GOING_FLAGS_DEFAULT:
|
| 638 |
|
|
xfs_fs_freeze(mp);
|
| 639 |
|
|
xfs_force_shutdown(mp, XFS_FORCE_UMOUNT);
|
| 640 |
|
|
xfs_fs_thaw(mp);
|
| 641 |
|
|
break;
|
| 642 |
|
|
case XFS_FSOP_GOING_FLAGS_LOGFLUSH:
|
| 643 |
|
|
xfs_force_shutdown(mp, XFS_FORCE_UMOUNT);
|
| 644 |
|
|
break;
|
| 645 |
|
|
case XFS_FSOP_GOING_FLAGS_NOLOGFLUSH:
|
| 646 |
|
|
xfs_force_shutdown(mp, XFS_FORCE_UMOUNT|XFS_LOG_IO_ERROR);
|
| 647 |
|
|
break;
|
| 648 |
|
|
default:
|
| 649 |
|
|
return XFS_ERROR(EINVAL);
|
| 650 |
|
|
}
|
| 651 |
|
|
|
| 652 |
|
|
return 0;
|
| 653 |
|
|
}
|
