Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
Nathan Scott | 7b71876 | 2005-11-02 14:58:39 +1100 | [diff] [blame] | 2 | * Copyright (c) 2000-2002,2005 Silicon Graphics, Inc. |
| 3 | * All Rights Reserved. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4 | * |
Nathan Scott | 7b71876 | 2005-11-02 14:58:39 +1100 | [diff] [blame] | 5 | * This program is free software; you can redistribute it and/or |
| 6 | * modify it under the terms of the GNU General Public License as |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 7 | * published by the Free Software Foundation. |
| 8 | * |
Nathan Scott | 7b71876 | 2005-11-02 14:58:39 +1100 | [diff] [blame] | 9 | * This program is distributed in the hope that it would be useful, |
| 10 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 11 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 12 | * GNU General Public License for more details. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 13 | * |
Nathan Scott | 7b71876 | 2005-11-02 14:58:39 +1100 | [diff] [blame] | 14 | * You should have received a copy of the GNU General Public License |
| 15 | * along with this program; if not, write the Free Software Foundation, |
| 16 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 17 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 18 | #include "xfs.h" |
Nathan Scott | a844f45 | 2005-11-02 14:38:42 +1100 | [diff] [blame] | 19 | #include "xfs_fs.h" |
Dave Chinner | 70a9883c | 2013-10-23 10:36:05 +1100 | [diff] [blame] | 20 | #include "xfs_shared.h" |
Dave Chinner | a4fbe6a | 2013-10-23 10:51:50 +1100 | [diff] [blame] | 21 | #include "xfs_format.h" |
Dave Chinner | 239880e | 2013-10-23 10:50:10 +1100 | [diff] [blame] | 22 | #include "xfs_log_format.h" |
| 23 | #include "xfs_trans_resv.h" |
Nathan Scott | a844f45 | 2005-11-02 14:38:42 +1100 | [diff] [blame] | 24 | #include "xfs_inum.h" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 25 | #include "xfs_sb.h" |
Nathan Scott | a844f45 | 2005-11-02 14:38:42 +1100 | [diff] [blame] | 26 | #include "xfs_ag.h" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 27 | #include "xfs_mount.h" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 28 | #include "xfs_inode.h" |
Dave Chinner | a4fbe6a | 2013-10-23 10:51:50 +1100 | [diff] [blame] | 29 | #include "xfs_btree.h" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 30 | #include "xfs_ialloc.h" |
Dave Chinner | a4fbe6a | 2013-10-23 10:51:50 +1100 | [diff] [blame] | 31 | #include "xfs_ialloc_btree.h" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 32 | #include "xfs_itable.h" |
| 33 | #include "xfs_error.h" |
Christoph Hellwig | f2d6761 | 2010-06-24 11:52:50 +1000 | [diff] [blame] | 34 | #include "xfs_trace.h" |
Dave Chinner | 33479e0 | 2012-10-08 21:56:11 +1100 | [diff] [blame] | 35 | #include "xfs_icache.h" |
Dave Chinner | a4fbe6a | 2013-10-23 10:51:50 +1100 | [diff] [blame] | 36 | #include "xfs_dinode.h" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 37 | |
Eric Sandeen | d96f8f8 | 2009-07-02 00:09:33 -0500 | [diff] [blame] | 38 | STATIC int |
Vlad Apostolov | 6f1f216 | 2006-09-28 11:06:15 +1000 | [diff] [blame] | 39 | xfs_internal_inum( |
| 40 | xfs_mount_t *mp, |
| 41 | xfs_ino_t ino) |
| 42 | { |
| 43 | return (ino == mp->m_sb.sb_rbmino || ino == mp->m_sb.sb_rsumino || |
Eric Sandeen | 6211870 | 2008-03-06 13:44:28 +1100 | [diff] [blame] | 44 | (xfs_sb_version_hasquota(&mp->m_sb) && |
Chandra Seetharaman | 9cad19d | 2013-06-27 17:25:04 -0500 | [diff] [blame] | 45 | xfs_is_quota_inode(&mp->m_sb, ino))); |
Vlad Apostolov | 6f1f216 | 2006-09-28 11:06:15 +1000 | [diff] [blame] | 46 | } |
| 47 | |
Christoph Hellwig | 7dce11d | 2010-06-23 18:11:11 +1000 | [diff] [blame] | 48 | /* |
| 49 | * Return stat information for one inode. |
| 50 | * Return 0 if ok, else errno. |
| 51 | */ |
| 52 | int |
| 53 | xfs_bulkstat_one_int( |
| 54 | struct xfs_mount *mp, /* mount point for filesystem */ |
| 55 | xfs_ino_t ino, /* inode to get data for */ |
| 56 | void __user *buffer, /* buffer to place output in */ |
| 57 | int ubsize, /* size of buffer */ |
| 58 | bulkstat_one_fmt_pf formatter, /* formatter, copy to user */ |
Christoph Hellwig | 7dce11d | 2010-06-23 18:11:11 +1000 | [diff] [blame] | 59 | int *ubused, /* bytes used by me */ |
| 60 | int *stat) /* BULKSTAT_RV_... */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 61 | { |
Christoph Hellwig | 7dce11d | 2010-06-23 18:11:11 +1000 | [diff] [blame] | 62 | struct xfs_icdinode *dic; /* dinode core info pointer */ |
| 63 | struct xfs_inode *ip; /* incore inode pointer */ |
Christoph Hellwig | 7dce11d | 2010-06-23 18:11:11 +1000 | [diff] [blame] | 64 | struct xfs_bstat *buf; /* return buffer */ |
| 65 | int error = 0; /* error value */ |
| 66 | |
| 67 | *stat = BULKSTAT_RV_NOTHING; |
| 68 | |
| 69 | if (!buffer || xfs_internal_inum(mp, ino)) |
Dave Chinner | 2451337 | 2014-06-25 14:58:08 +1000 | [diff] [blame] | 70 | return -EINVAL; |
Christoph Hellwig | 7dce11d | 2010-06-23 18:11:11 +1000 | [diff] [blame] | 71 | |
| 72 | buf = kmem_alloc(sizeof(*buf), KM_SLEEP | KM_MAYFAIL); |
| 73 | if (!buf) |
Dave Chinner | 2451337 | 2014-06-25 14:58:08 +1000 | [diff] [blame] | 74 | return -ENOMEM; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 75 | |
Nathan Scott | 745b1f47 | 2006-09-28 11:02:23 +1000 | [diff] [blame] | 76 | error = xfs_iget(mp, NULL, ino, |
Dave Chinner | 5132ba8 | 2012-03-22 05:15:10 +0000 | [diff] [blame] | 77 | (XFS_IGET_DONTCACHE | XFS_IGET_UNTRUSTED), |
| 78 | XFS_ILOCK_SHARED, &ip); |
Jie Liu | 8fe6577 | 2014-07-24 11:33:28 +1000 | [diff] [blame] | 79 | if (error) |
Christoph Hellwig | 7dce11d | 2010-06-23 18:11:11 +1000 | [diff] [blame] | 80 | goto out_free; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 81 | |
| 82 | ASSERT(ip != NULL); |
Christoph Hellwig | 92bfc6e | 2008-11-28 14:23:41 +1100 | [diff] [blame] | 83 | ASSERT(ip->i_imap.im_blkno != 0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 84 | |
| 85 | dic = &ip->i_d; |
| 86 | |
| 87 | /* xfs_iget returns the following without needing |
| 88 | * further change. |
| 89 | */ |
| 90 | buf->bs_nlink = dic->di_nlink; |
Arkadiusz Mi?kiewicz | 6743099 | 2010-09-26 06:10:18 +0000 | [diff] [blame] | 91 | buf->bs_projid_lo = dic->di_projid_lo; |
| 92 | buf->bs_projid_hi = dic->di_projid_hi; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 93 | buf->bs_ino = ino; |
| 94 | buf->bs_mode = dic->di_mode; |
| 95 | buf->bs_uid = dic->di_uid; |
| 96 | buf->bs_gid = dic->di_gid; |
| 97 | buf->bs_size = dic->di_size; |
Christoph Hellwig | 8a9c998 | 2012-02-29 09:53:52 +0000 | [diff] [blame] | 98 | buf->bs_atime.tv_sec = dic->di_atime.t_sec; |
| 99 | buf->bs_atime.tv_nsec = dic->di_atime.t_nsec; |
| 100 | buf->bs_mtime.tv_sec = dic->di_mtime.t_sec; |
| 101 | buf->bs_mtime.tv_nsec = dic->di_mtime.t_nsec; |
| 102 | buf->bs_ctime.tv_sec = dic->di_ctime.t_sec; |
| 103 | buf->bs_ctime.tv_nsec = dic->di_ctime.t_nsec; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 104 | buf->bs_xflags = xfs_ip2xflags(ip); |
| 105 | buf->bs_extsize = dic->di_extsize << mp->m_sb.sb_blocklog; |
| 106 | buf->bs_extents = dic->di_nextents; |
| 107 | buf->bs_gen = dic->di_gen; |
| 108 | memset(buf->bs_pad, 0, sizeof(buf->bs_pad)); |
| 109 | buf->bs_dmevmask = dic->di_dmevmask; |
| 110 | buf->bs_dmstate = dic->di_dmstate; |
| 111 | buf->bs_aextents = dic->di_anextents; |
Dave Chinner | 07000ee | 2010-03-05 04:41:14 +0000 | [diff] [blame] | 112 | buf->bs_forkoff = XFS_IFORK_BOFF(ip); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 113 | |
| 114 | switch (dic->di_format) { |
| 115 | case XFS_DINODE_FMT_DEV: |
| 116 | buf->bs_rdev = ip->i_df.if_u2.if_rdev; |
| 117 | buf->bs_blksize = BLKDEV_IOSIZE; |
| 118 | buf->bs_blocks = 0; |
| 119 | break; |
| 120 | case XFS_DINODE_FMT_LOCAL: |
| 121 | case XFS_DINODE_FMT_UUID: |
| 122 | buf->bs_rdev = 0; |
| 123 | buf->bs_blksize = mp->m_sb.sb_blocksize; |
| 124 | buf->bs_blocks = 0; |
| 125 | break; |
| 126 | case XFS_DINODE_FMT_EXTENTS: |
| 127 | case XFS_DINODE_FMT_BTREE: |
| 128 | buf->bs_rdev = 0; |
| 129 | buf->bs_blksize = mp->m_sb.sb_blocksize; |
| 130 | buf->bs_blocks = dic->di_nblocks + ip->i_delayed_blks; |
| 131 | break; |
| 132 | } |
Christoph Hellwig | f2d6761 | 2010-06-24 11:52:50 +1000 | [diff] [blame] | 133 | xfs_iunlock(ip, XFS_ILOCK_SHARED); |
| 134 | IRELE(ip); |
Christoph Hellwig | 7dce11d | 2010-06-23 18:11:11 +1000 | [diff] [blame] | 135 | |
| 136 | error = formatter(buffer, ubsize, ubused, buf); |
Christoph Hellwig | 7dce11d | 2010-06-23 18:11:11 +1000 | [diff] [blame] | 137 | if (!error) |
| 138 | *stat = BULKSTAT_RV_DIDONE; |
| 139 | |
| 140 | out_free: |
| 141 | kmem_free(buf); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 142 | return error; |
| 143 | } |
| 144 | |
sandeen@sandeen.net | 65fbaf2 | 2008-11-25 21:20:12 -0600 | [diff] [blame] | 145 | /* Return 0 on success or positive error */ |
Michal Marek | faa63e9 | 2007-07-11 11:10:19 +1000 | [diff] [blame] | 146 | STATIC int |
| 147 | xfs_bulkstat_one_fmt( |
| 148 | void __user *ubuffer, |
sandeen@sandeen.net | 65fbaf2 | 2008-11-25 21:20:12 -0600 | [diff] [blame] | 149 | int ubsize, |
| 150 | int *ubused, |
Michal Marek | faa63e9 | 2007-07-11 11:10:19 +1000 | [diff] [blame] | 151 | const xfs_bstat_t *buffer) |
| 152 | { |
sandeen@sandeen.net | 65fbaf2 | 2008-11-25 21:20:12 -0600 | [diff] [blame] | 153 | if (ubsize < sizeof(*buffer)) |
Dave Chinner | 2451337 | 2014-06-25 14:58:08 +1000 | [diff] [blame] | 154 | return -ENOMEM; |
Michal Marek | faa63e9 | 2007-07-11 11:10:19 +1000 | [diff] [blame] | 155 | if (copy_to_user(ubuffer, buffer, sizeof(*buffer))) |
Dave Chinner | 2451337 | 2014-06-25 14:58:08 +1000 | [diff] [blame] | 156 | return -EFAULT; |
sandeen@sandeen.net | 65fbaf2 | 2008-11-25 21:20:12 -0600 | [diff] [blame] | 157 | if (ubused) |
| 158 | *ubused = sizeof(*buffer); |
| 159 | return 0; |
Michal Marek | faa63e9 | 2007-07-11 11:10:19 +1000 | [diff] [blame] | 160 | } |
| 161 | |
sandeen@sandeen.net | 2ee4fa5 | 2008-11-25 21:20:11 -0600 | [diff] [blame] | 162 | int |
| 163 | xfs_bulkstat_one( |
| 164 | xfs_mount_t *mp, /* mount point for filesystem */ |
| 165 | xfs_ino_t ino, /* inode number to get data for */ |
| 166 | void __user *buffer, /* buffer to place output in */ |
| 167 | int ubsize, /* size of buffer */ |
sandeen@sandeen.net | 2ee4fa5 | 2008-11-25 21:20:11 -0600 | [diff] [blame] | 168 | int *ubused, /* bytes used by me */ |
sandeen@sandeen.net | 2ee4fa5 | 2008-11-25 21:20:11 -0600 | [diff] [blame] | 169 | int *stat) /* BULKSTAT_RV_... */ |
| 170 | { |
| 171 | return xfs_bulkstat_one_int(mp, ino, buffer, ubsize, |
Dave Chinner | 7b6259e | 2010-06-24 11:35:17 +1000 | [diff] [blame] | 172 | xfs_bulkstat_one_fmt, ubused, stat); |
Nathan Scott | 8b56f08 | 2006-09-28 11:01:46 +1000 | [diff] [blame] | 173 | } |
| 174 | |
Jie Liu | 4b8fdfe | 2014-07-24 18:41:18 +1000 | [diff] [blame^] | 175 | /* |
| 176 | * Loop over all clusters in a chunk for a given incore inode allocation btree |
| 177 | * record. Do a readahead if there are any allocated inodes in that cluster. |
| 178 | */ |
| 179 | STATIC void |
| 180 | xfs_bulkstat_ichunk_ra( |
| 181 | struct xfs_mount *mp, |
| 182 | xfs_agnumber_t agno, |
| 183 | struct xfs_inobt_rec_incore *irec) |
| 184 | { |
| 185 | xfs_agblock_t agbno; |
| 186 | struct blk_plug plug; |
| 187 | int blks_per_cluster; |
| 188 | int inodes_per_cluster; |
| 189 | int i; /* inode chunk index */ |
| 190 | |
| 191 | agbno = XFS_AGINO_TO_AGBNO(mp, irec->ir_startino); |
| 192 | blks_per_cluster = xfs_icluster_size_fsb(mp); |
| 193 | inodes_per_cluster = blks_per_cluster << mp->m_sb.sb_inopblog; |
| 194 | |
| 195 | blk_start_plug(&plug); |
| 196 | for (i = 0; i < XFS_INODES_PER_CHUNK; |
| 197 | i += inodes_per_cluster, agbno += blks_per_cluster) { |
| 198 | if (xfs_inobt_maskn(i, inodes_per_cluster) & ~irec->ir_free) { |
| 199 | xfs_btree_reada_bufs(mp, agno, agbno, blks_per_cluster, |
| 200 | &xfs_inode_buf_ops); |
| 201 | } |
| 202 | } |
| 203 | blk_finish_plug(&plug); |
| 204 | } |
| 205 | |
Lachlan McIlroy | cd57e59 | 2007-11-23 16:30:32 +1100 | [diff] [blame] | 206 | #define XFS_BULKSTAT_UBLEFT(ubleft) ((ubleft) >= statstruct_size) |
| 207 | |
Nathan Scott | 8b56f08 | 2006-09-28 11:01:46 +1000 | [diff] [blame] | 208 | /* |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 209 | * Return stat information in bulk (by-inode) for the filesystem. |
| 210 | */ |
| 211 | int /* error status */ |
| 212 | xfs_bulkstat( |
| 213 | xfs_mount_t *mp, /* mount point for filesystem */ |
| 214 | xfs_ino_t *lastinop, /* last inode returned */ |
| 215 | int *ubcountp, /* size of buffer/count returned */ |
| 216 | bulkstat_one_pf formatter, /* func that'd fill a single buf */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 217 | size_t statstruct_size, /* sizeof struct filling */ |
| 218 | char __user *ubuffer, /* buffer with inode stats */ |
Nathan Scott | c41564b | 2006-03-29 08:55:14 +1000 | [diff] [blame] | 219 | int *done) /* 1 if there are more stats to get */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 220 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 221 | xfs_buf_t *agbp; /* agi header buffer */ |
| 222 | xfs_agi_t *agi; /* agi header data */ |
| 223 | xfs_agino_t agino; /* inode # in allocation group */ |
| 224 | xfs_agnumber_t agno; /* allocation group number */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 225 | int chunkidx; /* current index into inode chunk */ |
| 226 | int clustidx; /* current index into inode cluster */ |
| 227 | xfs_btree_cur_t *cur; /* btree cursor for ialloc btree */ |
| 228 | int end_of_ag; /* set if we've seen the ag end */ |
| 229 | int error; /* error code */ |
| 230 | int fmterror;/* bulkstat formatter result */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 231 | int i; /* loop index */ |
| 232 | int icount; /* count of inodes good in irbuf */ |
Nathan Scott | 215101c | 2006-09-28 11:04:43 +1000 | [diff] [blame] | 233 | size_t irbsize; /* size of irec buffer in bytes */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 234 | xfs_ino_t ino; /* inode number (filesystem) */ |
Nathan Scott | 26275093 | 2006-09-28 11:02:03 +1000 | [diff] [blame] | 235 | xfs_inobt_rec_incore_t *irbp; /* current irec buffer pointer */ |
| 236 | xfs_inobt_rec_incore_t *irbuf; /* start of irec buffer */ |
| 237 | xfs_inobt_rec_incore_t *irbufend; /* end of good irec buffer entries */ |
Lachlan McIlroy | cd57e59 | 2007-11-23 16:30:32 +1100 | [diff] [blame] | 238 | xfs_ino_t lastino; /* last inode number returned */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 239 | int nirbuf; /* size of irbuf */ |
| 240 | int rval; /* return value error code */ |
| 241 | int tmp; /* result value from btree calls */ |
| 242 | int ubcount; /* size of user's buffer */ |
| 243 | int ubleft; /* bytes left in user's buffer */ |
| 244 | char __user *ubufp; /* pointer into user's buffer */ |
| 245 | int ubelem; /* spaces used in user's buffer */ |
| 246 | int ubused; /* bytes used by formatter */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 247 | |
| 248 | /* |
| 249 | * Get the last inode value, see if there's nothing to do. |
| 250 | */ |
| 251 | ino = (xfs_ino_t)*lastinop; |
Lachlan McIlroy | cd57e59 | 2007-11-23 16:30:32 +1100 | [diff] [blame] | 252 | lastino = ino; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 253 | agno = XFS_INO_TO_AGNO(mp, ino); |
| 254 | agino = XFS_INO_TO_AGINO(mp, ino); |
| 255 | if (agno >= mp->m_sb.sb_agcount || |
| 256 | ino != XFS_AGINO_TO_INO(mp, agno, agino)) { |
| 257 | *done = 1; |
| 258 | *ubcountp = 0; |
| 259 | return 0; |
| 260 | } |
Jie Liu | 296dfd7 | 2014-07-24 18:40:26 +1000 | [diff] [blame] | 261 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 262 | ubcount = *ubcountp; /* statstruct's */ |
| 263 | ubleft = ubcount * statstruct_size; /* bytes */ |
| 264 | *ubcountp = ubelem = 0; |
| 265 | *done = 0; |
| 266 | fmterror = 0; |
| 267 | ubufp = ubuffer; |
Christoph Hellwig | bdfb043 | 2010-01-20 21:55:30 +0000 | [diff] [blame] | 268 | irbuf = kmem_zalloc_greedy(&irbsize, PAGE_SIZE, PAGE_SIZE * 4); |
| 269 | if (!irbuf) |
Dave Chinner | 2451337 | 2014-06-25 14:58:08 +1000 | [diff] [blame] | 270 | return -ENOMEM; |
Christoph Hellwig | bdfb043 | 2010-01-20 21:55:30 +0000 | [diff] [blame] | 271 | |
Nathan Scott | bb3c7d2 | 2006-09-28 11:02:09 +1000 | [diff] [blame] | 272 | nirbuf = irbsize / sizeof(*irbuf); |
| 273 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 274 | /* |
| 275 | * Loop over the allocation groups, starting from the last |
| 276 | * inode returned; 0 means start of the allocation group. |
| 277 | */ |
| 278 | rval = 0; |
Lachlan McIlroy | cd57e59 | 2007-11-23 16:30:32 +1100 | [diff] [blame] | 279 | while (XFS_BULKSTAT_UBLEFT(ubleft) && agno < mp->m_sb.sb_agcount) { |
| 280 | cond_resched(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 281 | error = xfs_ialloc_read_agi(mp, NULL, agno, &agbp); |
Jie Liu | d4c2734 | 2014-07-24 18:40:43 +1000 | [diff] [blame] | 282 | if (error) |
| 283 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 284 | agi = XFS_BUF_TO_AGI(agbp); |
| 285 | /* |
| 286 | * Allocate and initialize a btree cursor for ialloc btree. |
| 287 | */ |
Brian Foster | 57bd3db | 2014-04-24 16:00:50 +1000 | [diff] [blame] | 288 | cur = xfs_inobt_init_cursor(mp, NULL, agbp, agno, |
| 289 | XFS_BTNUM_INO); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 290 | irbp = irbuf; |
| 291 | irbufend = irbuf + nirbuf; |
| 292 | end_of_ag = 0; |
| 293 | /* |
| 294 | * If we're returning in the middle of an allocation group, |
| 295 | * we need to get the remainder of the chunk we're in. |
| 296 | */ |
| 297 | if (agino > 0) { |
Christoph Hellwig | 2e287a7 | 2009-08-31 20:56:58 -0300 | [diff] [blame] | 298 | xfs_inobt_rec_incore_t r; |
| 299 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 300 | /* |
| 301 | * Lookup the inode chunk that this inode lives in. |
| 302 | */ |
Christoph Hellwig | 2187550 | 2009-08-31 20:58:21 -0300 | [diff] [blame] | 303 | error = xfs_inobt_lookup(cur, agino, XFS_LOOKUP_LE, |
| 304 | &tmp); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 305 | if (!error && /* no I/O error */ |
| 306 | tmp && /* lookup succeeded */ |
| 307 | /* got the record, should always work */ |
Christoph Hellwig | 2e287a7 | 2009-08-31 20:56:58 -0300 | [diff] [blame] | 308 | !(error = xfs_inobt_get_rec(cur, &r, &i)) && |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 309 | i == 1 && |
| 310 | /* this is the right chunk */ |
Christoph Hellwig | 2e287a7 | 2009-08-31 20:56:58 -0300 | [diff] [blame] | 311 | agino < r.ir_startino + XFS_INODES_PER_CHUNK && |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 312 | /* lastino was not last in chunk */ |
Christoph Hellwig | 2e287a7 | 2009-08-31 20:56:58 -0300 | [diff] [blame] | 313 | (chunkidx = agino - r.ir_startino + 1) < |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 314 | XFS_INODES_PER_CHUNK && |
| 315 | /* there are some left allocated */ |
Eric Sandeen | 9d87c31 | 2009-01-14 23:22:07 -0600 | [diff] [blame] | 316 | xfs_inobt_maskn(chunkidx, |
Christoph Hellwig | 2e287a7 | 2009-08-31 20:56:58 -0300 | [diff] [blame] | 317 | XFS_INODES_PER_CHUNK - chunkidx) & |
| 318 | ~r.ir_free) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 319 | /* |
| 320 | * Grab the chunk record. Mark all the |
| 321 | * uninteresting inodes (because they're |
| 322 | * before our start point) free. |
| 323 | */ |
| 324 | for (i = 0; i < chunkidx; i++) { |
Christoph Hellwig | 2e287a7 | 2009-08-31 20:56:58 -0300 | [diff] [blame] | 325 | if (XFS_INOBT_MASK(i) & ~r.ir_free) |
| 326 | r.ir_freecount++; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 327 | } |
Christoph Hellwig | 2e287a7 | 2009-08-31 20:56:58 -0300 | [diff] [blame] | 328 | r.ir_free |= xfs_inobt_maskn(0, chunkidx); |
| 329 | irbp->ir_startino = r.ir_startino; |
| 330 | irbp->ir_freecount = r.ir_freecount; |
| 331 | irbp->ir_free = r.ir_free; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 332 | irbp++; |
Christoph Hellwig | 2e287a7 | 2009-08-31 20:56:58 -0300 | [diff] [blame] | 333 | agino = r.ir_startino + XFS_INODES_PER_CHUNK; |
| 334 | icount = XFS_INODES_PER_CHUNK - r.ir_freecount; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 335 | } else { |
| 336 | /* |
| 337 | * If any of those tests failed, bump the |
| 338 | * inode number (just in case). |
| 339 | */ |
| 340 | agino++; |
| 341 | icount = 0; |
| 342 | } |
| 343 | /* |
| 344 | * In any case, increment to the next record. |
| 345 | */ |
| 346 | if (!error) |
Christoph Hellwig | 637aa50 | 2008-10-30 16:55:45 +1100 | [diff] [blame] | 347 | error = xfs_btree_increment(cur, 0, &tmp); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 348 | } else { |
| 349 | /* |
| 350 | * Start of ag. Lookup the first inode chunk. |
| 351 | */ |
Christoph Hellwig | 2187550 | 2009-08-31 20:58:21 -0300 | [diff] [blame] | 352 | error = xfs_inobt_lookup(cur, 0, XFS_LOOKUP_GE, &tmp); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 353 | icount = 0; |
| 354 | } |
Jie Liu | d4c2734 | 2014-07-24 18:40:43 +1000 | [diff] [blame] | 355 | if (error) |
| 356 | break; |
| 357 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 358 | /* |
| 359 | * Loop through inode btree records in this ag, |
| 360 | * until we run out of inodes or space in the buffer. |
| 361 | */ |
| 362 | while (irbp < irbufend && icount < ubcount) { |
Jie Liu | d4c2734 | 2014-07-24 18:40:43 +1000 | [diff] [blame] | 363 | struct xfs_inobt_rec_incore r; |
Christoph Hellwig | 2e287a7 | 2009-08-31 20:56:58 -0300 | [diff] [blame] | 364 | |
| 365 | error = xfs_inobt_get_rec(cur, &r, &i); |
| 366 | if (error || i == 0) { |
| 367 | end_of_ag = 1; |
| 368 | break; |
| 369 | } |
| 370 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 371 | /* |
| 372 | * If this chunk has any allocated inodes, save it. |
Nathan Scott | 26275093 | 2006-09-28 11:02:03 +1000 | [diff] [blame] | 373 | * Also start read-ahead now for this chunk. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 374 | */ |
Christoph Hellwig | 2e287a7 | 2009-08-31 20:56:58 -0300 | [diff] [blame] | 375 | if (r.ir_freecount < XFS_INODES_PER_CHUNK) { |
Jie Liu | 4b8fdfe | 2014-07-24 18:41:18 +1000 | [diff] [blame^] | 376 | xfs_bulkstat_ichunk_ra(mp, agno, &r); |
Christoph Hellwig | 2e287a7 | 2009-08-31 20:56:58 -0300 | [diff] [blame] | 377 | irbp->ir_startino = r.ir_startino; |
| 378 | irbp->ir_freecount = r.ir_freecount; |
| 379 | irbp->ir_free = r.ir_free; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 380 | irbp++; |
Christoph Hellwig | 2e287a7 | 2009-08-31 20:56:58 -0300 | [diff] [blame] | 381 | icount += XFS_INODES_PER_CHUNK - r.ir_freecount; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 382 | } |
| 383 | /* |
| 384 | * Set agino to after this chunk and bump the cursor. |
| 385 | */ |
Christoph Hellwig | 2e287a7 | 2009-08-31 20:56:58 -0300 | [diff] [blame] | 386 | agino = r.ir_startino + XFS_INODES_PER_CHUNK; |
Christoph Hellwig | 637aa50 | 2008-10-30 16:55:45 +1100 | [diff] [blame] | 387 | error = xfs_btree_increment(cur, 0, &tmp); |
Lachlan McIlroy | cd57e59 | 2007-11-23 16:30:32 +1100 | [diff] [blame] | 388 | cond_resched(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 389 | } |
| 390 | /* |
| 391 | * Drop the btree buffers and the agi buffer. |
| 392 | * We can't hold any of the locks these represent |
| 393 | * when calling iget. |
| 394 | */ |
| 395 | xfs_btree_del_cursor(cur, XFS_BTREE_NOERROR); |
| 396 | xfs_buf_relse(agbp); |
| 397 | /* |
| 398 | * Now format all the good inodes into the user's buffer. |
| 399 | */ |
| 400 | irbufend = irbp; |
| 401 | for (irbp = irbuf; |
Lachlan McIlroy | cd57e59 | 2007-11-23 16:30:32 +1100 | [diff] [blame] | 402 | irbp < irbufend && XFS_BULKSTAT_UBLEFT(ubleft); irbp++) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 403 | /* |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 404 | * Now process this chunk of inodes. |
| 405 | */ |
Nathan Scott | 26275093 | 2006-09-28 11:02:03 +1000 | [diff] [blame] | 406 | for (agino = irbp->ir_startino, chunkidx = clustidx = 0; |
Lachlan McIlroy | cd57e59 | 2007-11-23 16:30:32 +1100 | [diff] [blame] | 407 | XFS_BULKSTAT_UBLEFT(ubleft) && |
Nathan Scott | 26275093 | 2006-09-28 11:02:03 +1000 | [diff] [blame] | 408 | irbp->ir_freecount < XFS_INODES_PER_CHUNK; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 409 | chunkidx++, clustidx++, agino++) { |
| 410 | ASSERT(chunkidx < XFS_INODES_PER_CHUNK); |
Jie Liu | 9cee4c5 | 2013-07-01 21:51:32 +0800 | [diff] [blame] | 411 | |
Lachlan McIlroy | c2cba57 | 2007-10-12 11:12:20 +1000 | [diff] [blame] | 412 | ino = XFS_AGINO_TO_INO(mp, agno, agino); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 413 | /* |
| 414 | * Skip if this inode is free. |
| 415 | */ |
Lachlan McIlroy | c2cba57 | 2007-10-12 11:12:20 +1000 | [diff] [blame] | 416 | if (XFS_INOBT_MASK(chunkidx) & irbp->ir_free) { |
| 417 | lastino = ino; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 418 | continue; |
Lachlan McIlroy | c2cba57 | 2007-10-12 11:12:20 +1000 | [diff] [blame] | 419 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 420 | /* |
| 421 | * Count used inodes as free so we can tell |
| 422 | * when the chunk is used up. |
| 423 | */ |
Nathan Scott | 26275093 | 2006-09-28 11:02:03 +1000 | [diff] [blame] | 424 | irbp->ir_freecount++; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 425 | |
| 426 | /* |
| 427 | * Get the inode and fill in a single buffer. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 428 | */ |
| 429 | ubused = statstruct_size; |
Dave Chinner | 7b6259e | 2010-06-24 11:35:17 +1000 | [diff] [blame] | 430 | error = formatter(mp, ino, ubufp, ubleft, |
Christoph Hellwig | 7dce11d | 2010-06-23 18:11:11 +1000 | [diff] [blame] | 431 | &ubused, &fmterror); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 432 | if (fmterror == BULKSTAT_RV_NOTHING) { |
Dave Chinner | 2451337 | 2014-06-25 14:58:08 +1000 | [diff] [blame] | 433 | if (error && error != -ENOENT && |
| 434 | error != -EINVAL) { |
Vlad Apostolov | e132f54 | 2006-09-28 11:04:31 +1000 | [diff] [blame] | 435 | ubleft = 0; |
Lachlan McIlroy | cd57e59 | 2007-11-23 16:30:32 +1100 | [diff] [blame] | 436 | rval = error; |
| 437 | break; |
| 438 | } |
| 439 | lastino = ino; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 440 | continue; |
| 441 | } |
| 442 | if (fmterror == BULKSTAT_RV_GIVEUP) { |
| 443 | ubleft = 0; |
| 444 | ASSERT(error); |
| 445 | rval = error; |
| 446 | break; |
| 447 | } |
| 448 | if (ubufp) |
| 449 | ubufp += ubused; |
| 450 | ubleft -= ubused; |
| 451 | ubelem++; |
| 452 | lastino = ino; |
| 453 | } |
Lachlan McIlroy | cd57e59 | 2007-11-23 16:30:32 +1100 | [diff] [blame] | 454 | |
| 455 | cond_resched(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 456 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 457 | /* |
| 458 | * Set up for the next loop iteration. |
| 459 | */ |
Lachlan McIlroy | cd57e59 | 2007-11-23 16:30:32 +1100 | [diff] [blame] | 460 | if (XFS_BULKSTAT_UBLEFT(ubleft)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 461 | if (end_of_ag) { |
| 462 | agno++; |
| 463 | agino = 0; |
Lachlan McIlroy | cd57e59 | 2007-11-23 16:30:32 +1100 | [diff] [blame] | 464 | } else |
| 465 | agino = XFS_INO_TO_AGINO(mp, lastino); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 466 | } else |
| 467 | break; |
| 468 | } |
| 469 | /* |
| 470 | * Done, we're either out of filesystem or space to put the data. |
| 471 | */ |
Dave Chinner | fdd3cce | 2013-09-02 20:53:00 +1000 | [diff] [blame] | 472 | kmem_free(irbuf); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 473 | *ubcountp = ubelem; |
Lachlan McIlroy | cd57e59 | 2007-11-23 16:30:32 +1100 | [diff] [blame] | 474 | /* |
| 475 | * Found some inodes, return them now and return the error next time. |
| 476 | */ |
| 477 | if (ubelem) |
| 478 | rval = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 479 | if (agno >= mp->m_sb.sb_agcount) { |
| 480 | /* |
| 481 | * If we ran out of filesystem, mark lastino as off |
| 482 | * the end of the filesystem, so the next call |
| 483 | * will return immediately. |
| 484 | */ |
| 485 | *lastinop = (xfs_ino_t)XFS_AGINO_TO_INO(mp, agno, 0); |
| 486 | *done = 1; |
| 487 | } else |
| 488 | *lastinop = (xfs_ino_t)lastino; |
| 489 | |
| 490 | return rval; |
| 491 | } |
| 492 | |
Michal Marek | faa63e9 | 2007-07-11 11:10:19 +1000 | [diff] [blame] | 493 | int |
| 494 | xfs_inumbers_fmt( |
| 495 | void __user *ubuffer, /* buffer to write to */ |
Jie Liu | 549fa00 | 2014-07-24 12:11:47 +1000 | [diff] [blame] | 496 | const struct xfs_inogrp *buffer, /* buffer to read from */ |
Michal Marek | faa63e9 | 2007-07-11 11:10:19 +1000 | [diff] [blame] | 497 | long count, /* # of elements to read */ |
| 498 | long *written) /* # of bytes written */ |
| 499 | { |
| 500 | if (copy_to_user(ubuffer, buffer, count * sizeof(*buffer))) |
| 501 | return -EFAULT; |
| 502 | *written = count * sizeof(*buffer); |
| 503 | return 0; |
| 504 | } |
| 505 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 506 | /* |
| 507 | * Return inode number table for the filesystem. |
| 508 | */ |
| 509 | int /* error status */ |
| 510 | xfs_inumbers( |
Jie Liu | 549fa00 | 2014-07-24 12:11:47 +1000 | [diff] [blame] | 511 | struct xfs_mount *mp,/* mount point for filesystem */ |
| 512 | xfs_ino_t *lastino,/* last inode returned */ |
| 513 | int *count,/* size of buffer/count returned */ |
| 514 | void __user *ubuffer,/* buffer with inode descriptions */ |
| 515 | inumbers_fmt_pf formatter) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 516 | { |
Jie Liu | 549fa00 | 2014-07-24 12:11:47 +1000 | [diff] [blame] | 517 | xfs_agnumber_t agno = XFS_INO_TO_AGNO(mp, *lastino); |
| 518 | xfs_agino_t agino = XFS_INO_TO_AGINO(mp, *lastino); |
| 519 | struct xfs_btree_cur *cur = NULL; |
Jie Liu | c7cb51d | 2014-07-24 12:18:47 +1000 | [diff] [blame] | 520 | struct xfs_buf *agbp = NULL; |
Jie Liu | 549fa00 | 2014-07-24 12:11:47 +1000 | [diff] [blame] | 521 | struct xfs_inogrp *buffer; |
| 522 | int bcount; |
| 523 | int left = *count; |
| 524 | int bufidx = 0; |
| 525 | int error = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 526 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 527 | *count = 0; |
Jie Liu | 549fa00 | 2014-07-24 12:11:47 +1000 | [diff] [blame] | 528 | if (agno >= mp->m_sb.sb_agcount || |
| 529 | *lastino != XFS_AGINO_TO_INO(mp, agno, agino)) |
| 530 | return error; |
| 531 | |
Tim Shimmin | e6a4b37 | 2007-11-23 16:30:42 +1100 | [diff] [blame] | 532 | bcount = MIN(left, (int)(PAGE_SIZE / sizeof(*buffer))); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 533 | buffer = kmem_alloc(bcount * sizeof(*buffer), KM_SLEEP); |
Jie Liu | c7cb51d | 2014-07-24 12:18:47 +1000 | [diff] [blame] | 534 | do { |
Jie Liu | 549fa00 | 2014-07-24 12:11:47 +1000 | [diff] [blame] | 535 | struct xfs_inobt_rec_incore r; |
| 536 | int stat; |
| 537 | |
Jie Liu | c7cb51d | 2014-07-24 12:18:47 +1000 | [diff] [blame] | 538 | if (!agbp) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 539 | error = xfs_ialloc_read_agi(mp, NULL, agno, &agbp); |
Jie Liu | c7cb51d | 2014-07-24 12:18:47 +1000 | [diff] [blame] | 540 | if (error) |
| 541 | break; |
| 542 | |
Brian Foster | 57bd3db | 2014-04-24 16:00:50 +1000 | [diff] [blame] | 543 | cur = xfs_inobt_init_cursor(mp, NULL, agbp, agno, |
| 544 | XFS_BTNUM_INO); |
Christoph Hellwig | 2187550 | 2009-08-31 20:58:21 -0300 | [diff] [blame] | 545 | error = xfs_inobt_lookup(cur, agino, XFS_LOOKUP_GE, |
Jie Liu | 549fa00 | 2014-07-24 12:11:47 +1000 | [diff] [blame] | 546 | &stat); |
Jie Liu | c7cb51d | 2014-07-24 12:18:47 +1000 | [diff] [blame] | 547 | if (error) |
| 548 | break; |
| 549 | if (!stat) |
| 550 | goto next_ag; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 551 | } |
Jie Liu | c7cb51d | 2014-07-24 12:18:47 +1000 | [diff] [blame] | 552 | |
Jie Liu | 549fa00 | 2014-07-24 12:11:47 +1000 | [diff] [blame] | 553 | error = xfs_inobt_get_rec(cur, &r, &stat); |
Jie Liu | c7cb51d | 2014-07-24 12:18:47 +1000 | [diff] [blame] | 554 | if (error) |
| 555 | break; |
| 556 | if (!stat) |
| 557 | goto next_ag; |
| 558 | |
Christoph Hellwig | 2e287a7 | 2009-08-31 20:56:58 -0300 | [diff] [blame] | 559 | agino = r.ir_startino + XFS_INODES_PER_CHUNK - 1; |
| 560 | buffer[bufidx].xi_startino = |
| 561 | XFS_AGINO_TO_INO(mp, agno, r.ir_startino); |
| 562 | buffer[bufidx].xi_alloccount = |
| 563 | XFS_INODES_PER_CHUNK - r.ir_freecount; |
| 564 | buffer[bufidx].xi_allocmask = ~r.ir_free; |
Jie Liu | c7cb51d | 2014-07-24 12:18:47 +1000 | [diff] [blame] | 565 | if (++bufidx == bcount) { |
| 566 | long written; |
| 567 | |
Jie Liu | 549fa00 | 2014-07-24 12:11:47 +1000 | [diff] [blame] | 568 | error = formatter(ubuffer, buffer, bufidx, &written); |
| 569 | if (error) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 570 | break; |
Michal Marek | faa63e9 | 2007-07-11 11:10:19 +1000 | [diff] [blame] | 571 | ubuffer += written; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 572 | *count += bufidx; |
| 573 | bufidx = 0; |
| 574 | } |
Jie Liu | c7cb51d | 2014-07-24 12:18:47 +1000 | [diff] [blame] | 575 | if (!--left) |
| 576 | break; |
| 577 | |
| 578 | error = xfs_btree_increment(cur, 0, &stat); |
| 579 | if (error) |
| 580 | break; |
| 581 | if (stat) |
| 582 | continue; |
| 583 | |
| 584 | next_ag: |
| 585 | xfs_btree_del_cursor(cur, XFS_BTREE_ERROR); |
| 586 | cur = NULL; |
| 587 | xfs_buf_relse(agbp); |
| 588 | agbp = NULL; |
| 589 | agino = 0; |
| 590 | } while (++agno < mp->m_sb.sb_agcount); |
| 591 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 592 | if (!error) { |
| 593 | if (bufidx) { |
Jie Liu | c7cb51d | 2014-07-24 12:18:47 +1000 | [diff] [blame] | 594 | long written; |
| 595 | |
Jie Liu | 549fa00 | 2014-07-24 12:11:47 +1000 | [diff] [blame] | 596 | error = formatter(ubuffer, buffer, bufidx, &written); |
| 597 | if (!error) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 598 | *count += bufidx; |
| 599 | } |
| 600 | *lastino = XFS_AGINO_TO_INO(mp, agno, agino); |
| 601 | } |
Jie Liu | c7cb51d | 2014-07-24 12:18:47 +1000 | [diff] [blame] | 602 | |
Denys Vlasenko | f0e2d93 | 2008-05-19 16:31:57 +1000 | [diff] [blame] | 603 | kmem_free(buffer); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 604 | if (cur) |
| 605 | xfs_btree_del_cursor(cur, (error ? XFS_BTREE_ERROR : |
| 606 | XFS_BTREE_NOERROR)); |
| 607 | if (agbp) |
| 608 | xfs_buf_relse(agbp); |
Jie Liu | c7cb51d | 2014-07-24 12:18:47 +1000 | [diff] [blame] | 609 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 610 | return error; |
| 611 | } |