Dave Chinner | 0b61f8a | 2018-06-05 19:42:14 -0700 | [diff] [blame] | 1 | // SPDX-License-Identifier: GPL-2.0 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2 | /* |
Nathan Scott | 7b71876 | 2005-11-02 14:58:39 +1100 | [diff] [blame] | 3 | * Copyright (c) 2000-2003,2005 Silicon Graphics, Inc. |
Dave Chinner | 24df33b | 2013-04-12 07:30:21 +1000 | [diff] [blame] | 4 | * Copyright (c) 2013 Red Hat, Inc. |
Nathan Scott | 7b71876 | 2005-11-02 14:58:39 +1100 | [diff] [blame] | 5 | * All Rights Reserved. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 6 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 7 | #include "xfs.h" |
Nathan Scott | a844f45 | 2005-11-02 14:38:42 +1100 | [diff] [blame] | 8 | #include "xfs_fs.h" |
Darrick J. Wong | 5467b34 | 2019-06-28 19:25:35 -0700 | [diff] [blame] | 9 | #include "xfs_shared.h" |
Dave Chinner | a4fbe6a | 2013-10-23 10:51:50 +1100 | [diff] [blame] | 10 | #include "xfs_format.h" |
Dave Chinner | 239880e | 2013-10-23 10:50:10 +1100 | [diff] [blame] | 11 | #include "xfs_log_format.h" |
| 12 | #include "xfs_trans_resv.h" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 13 | #include "xfs_mount.h" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 14 | #include "xfs_inode.h" |
| 15 | #include "xfs_bmap.h" |
Dave Chinner | 2b9ab5a | 2013-08-12 20:49:37 +1000 | [diff] [blame] | 16 | #include "xfs_dir2.h" |
Christoph Hellwig | 5792664 | 2011-07-13 13:43:48 +0200 | [diff] [blame] | 17 | #include "xfs_dir2_priv.h" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 18 | #include "xfs_error.h" |
Christoph Hellwig | 0b1b213 | 2009-12-14 23:14:59 +0000 | [diff] [blame] | 19 | #include "xfs_trace.h" |
Dave Chinner | 239880e | 2013-10-23 10:50:10 +1100 | [diff] [blame] | 20 | #include "xfs_trans.h" |
Dave Chinner | 24df33b | 2013-04-12 07:30:21 +1000 | [diff] [blame] | 21 | #include "xfs_buf_item.h" |
Darrick J. Wong | ca14c09 | 2024-02-22 12:32:18 -0800 | [diff] [blame] | 22 | #include "xfs_health.h" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 23 | |
| 24 | /* |
| 25 | * Local function declarations. |
| 26 | */ |
Dave Chinner | 1d9025e | 2012-06-22 18:50:14 +1000 | [diff] [blame] | 27 | static int xfs_dir2_leaf_lookup_int(xfs_da_args_t *args, struct xfs_buf **lbpp, |
Christoph Hellwig | 787b089 | 2019-11-08 14:57:50 -0800 | [diff] [blame] | 28 | int *indexp, struct xfs_buf **dbpp, |
| 29 | struct xfs_dir3_icleaf_hdr *leafhdr); |
Dave Chinner | bc85178 | 2014-06-06 15:20:54 +1000 | [diff] [blame] | 30 | static void xfs_dir3_leaf_log_bests(struct xfs_da_args *args, |
| 31 | struct xfs_buf *bp, int first, int last); |
| 32 | static void xfs_dir3_leaf_log_tail(struct xfs_da_args *args, |
| 33 | struct xfs_buf *bp); |
Christoph Hellwig | ba0f32d | 2005-06-21 15:36:52 +1000 | [diff] [blame] | 34 | |
Christoph Hellwig | 5184255 | 2019-11-08 14:57:49 -0800 | [diff] [blame] | 35 | void |
| 36 | xfs_dir2_leaf_hdr_from_disk( |
| 37 | struct xfs_mount *mp, |
| 38 | struct xfs_dir3_icleaf_hdr *to, |
| 39 | struct xfs_dir2_leaf *from) |
| 40 | { |
Dave Chinner | ebd9027 | 2021-08-18 18:46:55 -0700 | [diff] [blame] | 41 | if (xfs_has_crc(mp)) { |
Christoph Hellwig | 5184255 | 2019-11-08 14:57:49 -0800 | [diff] [blame] | 42 | struct xfs_dir3_leaf *from3 = (struct xfs_dir3_leaf *)from; |
| 43 | |
| 44 | to->forw = be32_to_cpu(from3->hdr.info.hdr.forw); |
| 45 | to->back = be32_to_cpu(from3->hdr.info.hdr.back); |
| 46 | to->magic = be16_to_cpu(from3->hdr.info.hdr.magic); |
| 47 | to->count = be16_to_cpu(from3->hdr.count); |
| 48 | to->stale = be16_to_cpu(from3->hdr.stale); |
Christoph Hellwig | 787b089 | 2019-11-08 14:57:50 -0800 | [diff] [blame] | 49 | to->ents = from3->__ents; |
Christoph Hellwig | 5184255 | 2019-11-08 14:57:49 -0800 | [diff] [blame] | 50 | |
| 51 | ASSERT(to->magic == XFS_DIR3_LEAF1_MAGIC || |
| 52 | to->magic == XFS_DIR3_LEAFN_MAGIC); |
| 53 | } else { |
| 54 | to->forw = be32_to_cpu(from->hdr.info.forw); |
| 55 | to->back = be32_to_cpu(from->hdr.info.back); |
| 56 | to->magic = be16_to_cpu(from->hdr.info.magic); |
| 57 | to->count = be16_to_cpu(from->hdr.count); |
| 58 | to->stale = be16_to_cpu(from->hdr.stale); |
Christoph Hellwig | 787b089 | 2019-11-08 14:57:50 -0800 | [diff] [blame] | 59 | to->ents = from->__ents; |
Christoph Hellwig | 5184255 | 2019-11-08 14:57:49 -0800 | [diff] [blame] | 60 | |
| 61 | ASSERT(to->magic == XFS_DIR2_LEAF1_MAGIC || |
| 62 | to->magic == XFS_DIR2_LEAFN_MAGIC); |
| 63 | } |
| 64 | } |
| 65 | |
Christoph Hellwig | 163fbbb | 2019-11-08 14:57:50 -0800 | [diff] [blame] | 66 | void |
| 67 | xfs_dir2_leaf_hdr_to_disk( |
| 68 | struct xfs_mount *mp, |
| 69 | struct xfs_dir2_leaf *to, |
| 70 | struct xfs_dir3_icleaf_hdr *from) |
| 71 | { |
Dave Chinner | ebd9027 | 2021-08-18 18:46:55 -0700 | [diff] [blame] | 72 | if (xfs_has_crc(mp)) { |
Christoph Hellwig | 163fbbb | 2019-11-08 14:57:50 -0800 | [diff] [blame] | 73 | struct xfs_dir3_leaf *to3 = (struct xfs_dir3_leaf *)to; |
| 74 | |
| 75 | ASSERT(from->magic == XFS_DIR3_LEAF1_MAGIC || |
| 76 | from->magic == XFS_DIR3_LEAFN_MAGIC); |
| 77 | |
| 78 | to3->hdr.info.hdr.forw = cpu_to_be32(from->forw); |
| 79 | to3->hdr.info.hdr.back = cpu_to_be32(from->back); |
| 80 | to3->hdr.info.hdr.magic = cpu_to_be16(from->magic); |
| 81 | to3->hdr.count = cpu_to_be16(from->count); |
| 82 | to3->hdr.stale = cpu_to_be16(from->stale); |
| 83 | } else { |
| 84 | ASSERT(from->magic == XFS_DIR2_LEAF1_MAGIC || |
| 85 | from->magic == XFS_DIR2_LEAFN_MAGIC); |
| 86 | |
| 87 | to->hdr.info.forw = cpu_to_be32(from->forw); |
| 88 | to->hdr.info.back = cpu_to_be32(from->back); |
| 89 | to->hdr.info.magic = cpu_to_be16(from->magic); |
| 90 | to->hdr.count = cpu_to_be16(from->count); |
| 91 | to->hdr.stale = cpu_to_be16(from->stale); |
| 92 | } |
| 93 | } |
| 94 | |
Dave Chinner | 24df33b | 2013-04-12 07:30:21 +1000 | [diff] [blame] | 95 | /* |
| 96 | * Check the internal consistency of a leaf1 block. |
| 97 | * Pop an assert if something is wrong. |
| 98 | */ |
| 99 | #ifdef DEBUG |
Darrick J. Wong | a6a781a | 2018-01-08 10:51:03 -0800 | [diff] [blame] | 100 | static xfs_failaddr_t |
Dave Chinner | 24df33b | 2013-04-12 07:30:21 +1000 | [diff] [blame] | 101 | xfs_dir3_leaf1_check( |
Dave Chinner | 4141956 | 2013-10-29 22:11:50 +1100 | [diff] [blame] | 102 | struct xfs_inode *dp, |
Dave Chinner | 24df33b | 2013-04-12 07:30:21 +1000 | [diff] [blame] | 103 | struct xfs_buf *bp) |
| 104 | { |
| 105 | struct xfs_dir2_leaf *leaf = bp->b_addr; |
| 106 | struct xfs_dir3_icleaf_hdr leafhdr; |
| 107 | |
Christoph Hellwig | 5184255 | 2019-11-08 14:57:49 -0800 | [diff] [blame] | 108 | xfs_dir2_leaf_hdr_from_disk(dp->i_mount, &leafhdr, leaf); |
Dave Chinner | 24df33b | 2013-04-12 07:30:21 +1000 | [diff] [blame] | 109 | |
| 110 | if (leafhdr.magic == XFS_DIR3_LEAF1_MAGIC) { |
| 111 | struct xfs_dir3_leaf_hdr *leaf3 = bp->b_addr; |
Dave Chinner | 9343ee7 | 2021-08-18 18:47:05 -0700 | [diff] [blame] | 112 | if (be64_to_cpu(leaf3->info.blkno) != xfs_buf_daddr(bp)) |
Darrick J. Wong | a6a781a | 2018-01-08 10:51:03 -0800 | [diff] [blame] | 113 | return __this_address; |
Dave Chinner | 24df33b | 2013-04-12 07:30:21 +1000 | [diff] [blame] | 114 | } else if (leafhdr.magic != XFS_DIR2_LEAF1_MAGIC) |
Darrick J. Wong | a6a781a | 2018-01-08 10:51:03 -0800 | [diff] [blame] | 115 | return __this_address; |
Dave Chinner | 24df33b | 2013-04-12 07:30:21 +1000 | [diff] [blame] | 116 | |
Dave Chinner | 1fea323 | 2021-03-22 09:52:05 -0700 | [diff] [blame] | 117 | return xfs_dir3_leaf_check_int(dp->i_mount, &leafhdr, leaf, false); |
Dave Chinner | 24df33b | 2013-04-12 07:30:21 +1000 | [diff] [blame] | 118 | } |
Darrick J. Wong | a6a781a | 2018-01-08 10:51:03 -0800 | [diff] [blame] | 119 | |
| 120 | static inline void |
| 121 | xfs_dir3_leaf_check( |
| 122 | struct xfs_inode *dp, |
| 123 | struct xfs_buf *bp) |
| 124 | { |
| 125 | xfs_failaddr_t fa; |
| 126 | |
| 127 | fa = xfs_dir3_leaf1_check(dp, bp); |
| 128 | if (!fa) |
| 129 | return; |
| 130 | xfs_corruption_error(__func__, XFS_ERRLEVEL_LOW, dp->i_mount, |
Darrick J. Wong | 2551a53 | 2018-06-04 10:23:54 -0700 | [diff] [blame] | 131 | bp->b_addr, BBTOB(bp->b_length), __FILE__, __LINE__, |
| 132 | fa); |
Darrick J. Wong | a6a781a | 2018-01-08 10:51:03 -0800 | [diff] [blame] | 133 | ASSERT(0); |
| 134 | } |
Dave Chinner | 24df33b | 2013-04-12 07:30:21 +1000 | [diff] [blame] | 135 | #else |
Dave Chinner | 4141956 | 2013-10-29 22:11:50 +1100 | [diff] [blame] | 136 | #define xfs_dir3_leaf_check(dp, bp) |
Dave Chinner | 24df33b | 2013-04-12 07:30:21 +1000 | [diff] [blame] | 137 | #endif |
| 138 | |
Darrick J. Wong | a6a781a | 2018-01-08 10:51:03 -0800 | [diff] [blame] | 139 | xfs_failaddr_t |
Dave Chinner | 24df33b | 2013-04-12 07:30:21 +1000 | [diff] [blame] | 140 | xfs_dir3_leaf_check_int( |
Christoph Hellwig | 23220fe | 2019-11-08 15:06:03 -0800 | [diff] [blame] | 141 | struct xfs_mount *mp, |
| 142 | struct xfs_dir3_icleaf_hdr *hdr, |
Dave Chinner | 1fea323 | 2021-03-22 09:52:05 -0700 | [diff] [blame] | 143 | struct xfs_dir2_leaf *leaf, |
| 144 | bool expensive_checking) |
Dave Chinner | 24df33b | 2013-04-12 07:30:21 +1000 | [diff] [blame] | 145 | { |
Christoph Hellwig | 23220fe | 2019-11-08 15:06:03 -0800 | [diff] [blame] | 146 | struct xfs_da_geometry *geo = mp->m_dir_geo; |
| 147 | xfs_dir2_leaf_tail_t *ltp; |
| 148 | int stale; |
| 149 | int i; |
Guo Xuenan | 13cf24e | 2022-10-18 14:32:35 -0700 | [diff] [blame] | 150 | bool isleaf1 = (hdr->magic == XFS_DIR2_LEAF1_MAGIC || |
| 151 | hdr->magic == XFS_DIR3_LEAF1_MAGIC); |
Dave Chinner | 01ba43b | 2013-10-29 22:11:52 +1100 | [diff] [blame] | 152 | |
Dave Chinner | 8f66193 | 2014-06-06 15:15:59 +1000 | [diff] [blame] | 153 | ltp = xfs_dir2_leaf_tail_p(geo, leaf); |
Dave Chinner | 24df33b | 2013-04-12 07:30:21 +1000 | [diff] [blame] | 154 | |
| 155 | /* |
| 156 | * XXX (dgc): This value is not restrictive enough. |
| 157 | * Should factor in the size of the bests table as well. |
Christoph Hellwig | 13d2c10 | 2021-03-29 11:11:40 -0700 | [diff] [blame] | 158 | * We can deduce a value for that from i_disk_size. |
Dave Chinner | 24df33b | 2013-04-12 07:30:21 +1000 | [diff] [blame] | 159 | */ |
Christoph Hellwig | 478c783 | 2019-11-08 14:57:51 -0800 | [diff] [blame] | 160 | if (hdr->count > geo->leaf_max_ents) |
Darrick J. Wong | a6a781a | 2018-01-08 10:51:03 -0800 | [diff] [blame] | 161 | return __this_address; |
Dave Chinner | 24df33b | 2013-04-12 07:30:21 +1000 | [diff] [blame] | 162 | |
| 163 | /* Leaves and bests don't overlap in leaf format. */ |
Guo Xuenan | 13cf24e | 2022-10-18 14:32:35 -0700 | [diff] [blame] | 164 | if (isleaf1 && |
Christoph Hellwig | 787b089 | 2019-11-08 14:57:50 -0800 | [diff] [blame] | 165 | (char *)&hdr->ents[hdr->count] > (char *)xfs_dir2_leaf_bests_p(ltp)) |
Darrick J. Wong | a6a781a | 2018-01-08 10:51:03 -0800 | [diff] [blame] | 166 | return __this_address; |
Dave Chinner | 24df33b | 2013-04-12 07:30:21 +1000 | [diff] [blame] | 167 | |
Dave Chinner | 1fea323 | 2021-03-22 09:52:05 -0700 | [diff] [blame] | 168 | if (!expensive_checking) |
| 169 | return NULL; |
| 170 | |
Dave Chinner | 24df33b | 2013-04-12 07:30:21 +1000 | [diff] [blame] | 171 | /* Check hash value order, count stale entries. */ |
| 172 | for (i = stale = 0; i < hdr->count; i++) { |
| 173 | if (i + 1 < hdr->count) { |
Christoph Hellwig | 787b089 | 2019-11-08 14:57:50 -0800 | [diff] [blame] | 174 | if (be32_to_cpu(hdr->ents[i].hashval) > |
| 175 | be32_to_cpu(hdr->ents[i + 1].hashval)) |
Darrick J. Wong | a6a781a | 2018-01-08 10:51:03 -0800 | [diff] [blame] | 176 | return __this_address; |
Dave Chinner | 24df33b | 2013-04-12 07:30:21 +1000 | [diff] [blame] | 177 | } |
Christoph Hellwig | 787b089 | 2019-11-08 14:57:50 -0800 | [diff] [blame] | 178 | if (hdr->ents[i].address == cpu_to_be32(XFS_DIR2_NULL_DATAPTR)) |
Dave Chinner | 24df33b | 2013-04-12 07:30:21 +1000 | [diff] [blame] | 179 | stale++; |
Guo Xuenan | 13cf24e | 2022-10-18 14:32:35 -0700 | [diff] [blame] | 180 | if (isleaf1 && xfs_dir2_dataptr_to_db(geo, |
| 181 | be32_to_cpu(hdr->ents[i].address)) >= |
| 182 | be32_to_cpu(ltp->bestcount)) |
| 183 | return __this_address; |
Dave Chinner | 24df33b | 2013-04-12 07:30:21 +1000 | [diff] [blame] | 184 | } |
| 185 | if (hdr->stale != stale) |
Darrick J. Wong | a6a781a | 2018-01-08 10:51:03 -0800 | [diff] [blame] | 186 | return __this_address; |
| 187 | return NULL; |
Dave Chinner | 24df33b | 2013-04-12 07:30:21 +1000 | [diff] [blame] | 188 | } |
| 189 | |
Dave Chinner | 0f295a2 | 2013-09-03 10:06:58 +1000 | [diff] [blame] | 190 | /* |
| 191 | * We verify the magic numbers before decoding the leaf header so that on debug |
| 192 | * kernels we don't get assertion failures in xfs_dir3_leaf_hdr_from_disk() due |
| 193 | * to incorrect magic numbers. |
| 194 | */ |
Darrick J. Wong | a6a781a | 2018-01-08 10:51:03 -0800 | [diff] [blame] | 195 | static xfs_failaddr_t |
Dave Chinner | 24df33b | 2013-04-12 07:30:21 +1000 | [diff] [blame] | 196 | xfs_dir3_leaf_verify( |
Christoph Hellwig | 23220fe | 2019-11-08 15:06:03 -0800 | [diff] [blame] | 197 | struct xfs_buf *bp) |
Dave Chinner | e6f7667 | 2012-11-12 22:54:15 +1100 | [diff] [blame] | 198 | { |
Christoph Hellwig | 23220fe | 2019-11-08 15:06:03 -0800 | [diff] [blame] | 199 | struct xfs_mount *mp = bp->b_mount; |
| 200 | struct xfs_dir3_icleaf_hdr leafhdr; |
| 201 | xfs_failaddr_t fa; |
Dave Chinner | e6f7667 | 2012-11-12 22:54:15 +1100 | [diff] [blame] | 202 | |
Brian Foster | 8764f98 | 2019-02-07 10:45:48 -0800 | [diff] [blame] | 203 | fa = xfs_da3_blkinfo_verify(bp, bp->b_addr); |
| 204 | if (fa) |
| 205 | return fa; |
Dave Chinner | 0f295a2 | 2013-09-03 10:06:58 +1000 | [diff] [blame] | 206 | |
Christoph Hellwig | 23220fe | 2019-11-08 15:06:03 -0800 | [diff] [blame] | 207 | xfs_dir2_leaf_hdr_from_disk(mp, &leafhdr, bp->b_addr); |
Dave Chinner | 1fea323 | 2021-03-22 09:52:05 -0700 | [diff] [blame] | 208 | return xfs_dir3_leaf_check_int(mp, &leafhdr, bp->b_addr, true); |
Dave Chinner | 24df33b | 2013-04-12 07:30:21 +1000 | [diff] [blame] | 209 | } |
| 210 | |
Darrick J. Wong | 402eef1 | 2024-04-15 14:54:39 -0700 | [diff] [blame] | 211 | xfs_failaddr_t |
| 212 | xfs_dir3_leaf_header_check( |
| 213 | struct xfs_buf *bp, |
| 214 | xfs_ino_t owner) |
| 215 | { |
| 216 | struct xfs_mount *mp = bp->b_mount; |
| 217 | |
| 218 | if (xfs_has_crc(mp)) { |
| 219 | struct xfs_dir3_leaf *hdr3 = bp->b_addr; |
| 220 | |
| 221 | if (hdr3->hdr.info.hdr.magic != |
| 222 | cpu_to_be16(XFS_DIR3_LEAF1_MAGIC) && |
| 223 | hdr3->hdr.info.hdr.magic != |
| 224 | cpu_to_be16(XFS_DIR3_LEAFN_MAGIC)) |
| 225 | return __this_address; |
| 226 | |
| 227 | if (be64_to_cpu(hdr3->hdr.info.owner) != owner) |
| 228 | return __this_address; |
| 229 | } |
| 230 | |
| 231 | return NULL; |
| 232 | } |
| 233 | |
Dave Chinner | 24df33b | 2013-04-12 07:30:21 +1000 | [diff] [blame] | 234 | static void |
Brian Foster | 09f4201 | 2019-02-07 10:45:47 -0800 | [diff] [blame] | 235 | xfs_dir3_leaf_read_verify( |
| 236 | struct xfs_buf *bp) |
Dave Chinner | 24df33b | 2013-04-12 07:30:21 +1000 | [diff] [blame] | 237 | { |
Christoph Hellwig | dbd329f1 | 2019-06-28 19:27:29 -0700 | [diff] [blame] | 238 | struct xfs_mount *mp = bp->b_mount; |
Darrick J. Wong | bc1a09b | 2018-01-08 10:51:03 -0800 | [diff] [blame] | 239 | xfs_failaddr_t fa; |
Dave Chinner | 24df33b | 2013-04-12 07:30:21 +1000 | [diff] [blame] | 240 | |
Dave Chinner | 38c26bf | 2021-08-18 18:46:37 -0700 | [diff] [blame] | 241 | if (xfs_has_crc(mp) && |
Eric Sandeen | ce5028c | 2014-02-27 15:23:10 +1100 | [diff] [blame] | 242 | !xfs_buf_verify_cksum(bp, XFS_DIR3_LEAF_CRC_OFF)) |
Darrick J. Wong | bc1a09b | 2018-01-08 10:51:03 -0800 | [diff] [blame] | 243 | xfs_verifier_error(bp, -EFSBADCRC, __this_address); |
| 244 | else { |
Brian Foster | 09f4201 | 2019-02-07 10:45:47 -0800 | [diff] [blame] | 245 | fa = xfs_dir3_leaf_verify(bp); |
Darrick J. Wong | bc1a09b | 2018-01-08 10:51:03 -0800 | [diff] [blame] | 246 | if (fa) |
| 247 | xfs_verifier_error(bp, -EFSCORRUPTED, fa); |
| 248 | } |
Dave Chinner | 612cfbf | 2012-11-14 17:52:32 +1100 | [diff] [blame] | 249 | } |
Dave Chinner | e6f7667 | 2012-11-12 22:54:15 +1100 | [diff] [blame] | 250 | |
Dave Chinner | 612cfbf | 2012-11-14 17:52:32 +1100 | [diff] [blame] | 251 | static void |
Brian Foster | 09f4201 | 2019-02-07 10:45:47 -0800 | [diff] [blame] | 252 | xfs_dir3_leaf_write_verify( |
| 253 | struct xfs_buf *bp) |
Dave Chinner | 612cfbf | 2012-11-14 17:52:32 +1100 | [diff] [blame] | 254 | { |
Christoph Hellwig | dbd329f1 | 2019-06-28 19:27:29 -0700 | [diff] [blame] | 255 | struct xfs_mount *mp = bp->b_mount; |
Carlos Maiolino | fb1755a | 2018-01-24 13:38:48 -0800 | [diff] [blame] | 256 | struct xfs_buf_log_item *bip = bp->b_log_item; |
Dave Chinner | 24df33b | 2013-04-12 07:30:21 +1000 | [diff] [blame] | 257 | struct xfs_dir3_leaf_hdr *hdr3 = bp->b_addr; |
Darrick J. Wong | bc1a09b | 2018-01-08 10:51:03 -0800 | [diff] [blame] | 258 | xfs_failaddr_t fa; |
Dave Chinner | 24df33b | 2013-04-12 07:30:21 +1000 | [diff] [blame] | 259 | |
Brian Foster | 09f4201 | 2019-02-07 10:45:47 -0800 | [diff] [blame] | 260 | fa = xfs_dir3_leaf_verify(bp); |
Darrick J. Wong | bc1a09b | 2018-01-08 10:51:03 -0800 | [diff] [blame] | 261 | if (fa) { |
| 262 | xfs_verifier_error(bp, -EFSCORRUPTED, fa); |
Dave Chinner | 24df33b | 2013-04-12 07:30:21 +1000 | [diff] [blame] | 263 | return; |
| 264 | } |
| 265 | |
Dave Chinner | 38c26bf | 2021-08-18 18:46:37 -0700 | [diff] [blame] | 266 | if (!xfs_has_crc(mp)) |
Dave Chinner | 24df33b | 2013-04-12 07:30:21 +1000 | [diff] [blame] | 267 | return; |
| 268 | |
| 269 | if (bip) |
| 270 | hdr3->info.lsn = cpu_to_be64(bip->bli_item.li_lsn); |
| 271 | |
Eric Sandeen | f1dbcd7 | 2014-02-27 15:18:23 +1100 | [diff] [blame] | 272 | xfs_buf_update_cksum(bp, XFS_DIR3_LEAF_CRC_OFF); |
Dave Chinner | 612cfbf | 2012-11-14 17:52:32 +1100 | [diff] [blame] | 273 | } |
| 274 | |
Dave Chinner | d75afeb | 2013-04-03 16:11:29 +1100 | [diff] [blame] | 275 | const struct xfs_buf_ops xfs_dir3_leaf1_buf_ops = { |
Eric Sandeen | 233135b | 2016-01-04 16:10:19 +1100 | [diff] [blame] | 276 | .name = "xfs_dir3_leaf1", |
Darrick J. Wong | 15baadf | 2019-02-16 11:47:28 -0800 | [diff] [blame] | 277 | .magic16 = { cpu_to_be16(XFS_DIR2_LEAF1_MAGIC), |
| 278 | cpu_to_be16(XFS_DIR3_LEAF1_MAGIC) }, |
Brian Foster | 09f4201 | 2019-02-07 10:45:47 -0800 | [diff] [blame] | 279 | .verify_read = xfs_dir3_leaf_read_verify, |
| 280 | .verify_write = xfs_dir3_leaf_write_verify, |
| 281 | .verify_struct = xfs_dir3_leaf_verify, |
Dave Chinner | 1813dd6 | 2012-11-14 17:54:40 +1100 | [diff] [blame] | 282 | }; |
| 283 | |
Dave Chinner | 24df33b | 2013-04-12 07:30:21 +1000 | [diff] [blame] | 284 | const struct xfs_buf_ops xfs_dir3_leafn_buf_ops = { |
Eric Sandeen | 233135b | 2016-01-04 16:10:19 +1100 | [diff] [blame] | 285 | .name = "xfs_dir3_leafn", |
Darrick J. Wong | 15baadf | 2019-02-16 11:47:28 -0800 | [diff] [blame] | 286 | .magic16 = { cpu_to_be16(XFS_DIR2_LEAFN_MAGIC), |
| 287 | cpu_to_be16(XFS_DIR3_LEAFN_MAGIC) }, |
Brian Foster | 09f4201 | 2019-02-07 10:45:47 -0800 | [diff] [blame] | 288 | .verify_read = xfs_dir3_leaf_read_verify, |
| 289 | .verify_write = xfs_dir3_leaf_write_verify, |
| 290 | .verify_struct = xfs_dir3_leaf_verify, |
Dave Chinner | 1813dd6 | 2012-11-14 17:54:40 +1100 | [diff] [blame] | 291 | }; |
Dave Chinner | e6f7667 | 2012-11-12 22:54:15 +1100 | [diff] [blame] | 292 | |
Darrick J. Wong | 2678809 | 2017-06-16 11:00:07 -0700 | [diff] [blame] | 293 | int |
Dave Chinner | 24df33b | 2013-04-12 07:30:21 +1000 | [diff] [blame] | 294 | xfs_dir3_leaf_read( |
Dave Chinner | e6f7667 | 2012-11-12 22:54:15 +1100 | [diff] [blame] | 295 | struct xfs_trans *tp, |
| 296 | struct xfs_inode *dp, |
Darrick J. Wong | 402eef1 | 2024-04-15 14:54:39 -0700 | [diff] [blame] | 297 | xfs_ino_t owner, |
Dave Chinner | e6f7667 | 2012-11-12 22:54:15 +1100 | [diff] [blame] | 298 | xfs_dablk_t fbno, |
Dave Chinner | e6f7667 | 2012-11-12 22:54:15 +1100 | [diff] [blame] | 299 | struct xfs_buf **bpp) |
| 300 | { |
Darrick J. Wong | 402eef1 | 2024-04-15 14:54:39 -0700 | [diff] [blame] | 301 | xfs_failaddr_t fa; |
Dave Chinner | d75afeb | 2013-04-03 16:11:29 +1100 | [diff] [blame] | 302 | int err; |
| 303 | |
Christoph Hellwig | cd2c9f1 | 2019-11-20 09:46:04 -0800 | [diff] [blame] | 304 | err = xfs_da_read_buf(tp, dp, fbno, 0, bpp, XFS_DATA_FORK, |
Christoph Hellwig | c943c0b | 2019-11-20 09:46:03 -0800 | [diff] [blame] | 305 | &xfs_dir3_leaf1_buf_ops); |
Darrick J. Wong | 402eef1 | 2024-04-15 14:54:39 -0700 | [diff] [blame] | 306 | if (err || !(*bpp)) |
| 307 | return err; |
| 308 | |
| 309 | fa = xfs_dir3_leaf_header_check(*bpp, owner); |
| 310 | if (fa) { |
| 311 | __xfs_buf_mark_corrupt(*bpp, fa); |
| 312 | xfs_trans_brelse(tp, *bpp); |
| 313 | *bpp = NULL; |
| 314 | xfs_dirattr_mark_sick(dp, XFS_DATA_FORK); |
| 315 | return -EFSCORRUPTED; |
| 316 | } |
| 317 | |
| 318 | if (tp) |
Dave Chinner | 61fe135 | 2013-04-03 16:11:30 +1100 | [diff] [blame] | 319 | xfs_trans_buf_set_type(tp, *bpp, XFS_BLFT_DIR_LEAF1_BUF); |
Darrick J. Wong | 402eef1 | 2024-04-15 14:54:39 -0700 | [diff] [blame] | 320 | return 0; |
Dave Chinner | e6f7667 | 2012-11-12 22:54:15 +1100 | [diff] [blame] | 321 | } |
| 322 | |
| 323 | int |
Dave Chinner | 24df33b | 2013-04-12 07:30:21 +1000 | [diff] [blame] | 324 | xfs_dir3_leafn_read( |
Dave Chinner | e6f7667 | 2012-11-12 22:54:15 +1100 | [diff] [blame] | 325 | struct xfs_trans *tp, |
| 326 | struct xfs_inode *dp, |
Darrick J. Wong | 402eef1 | 2024-04-15 14:54:39 -0700 | [diff] [blame] | 327 | xfs_ino_t owner, |
Dave Chinner | e6f7667 | 2012-11-12 22:54:15 +1100 | [diff] [blame] | 328 | xfs_dablk_t fbno, |
Dave Chinner | e6f7667 | 2012-11-12 22:54:15 +1100 | [diff] [blame] | 329 | struct xfs_buf **bpp) |
| 330 | { |
Darrick J. Wong | 402eef1 | 2024-04-15 14:54:39 -0700 | [diff] [blame] | 331 | xfs_failaddr_t fa; |
Dave Chinner | d75afeb | 2013-04-03 16:11:29 +1100 | [diff] [blame] | 332 | int err; |
| 333 | |
Christoph Hellwig | cd2c9f1 | 2019-11-20 09:46:04 -0800 | [diff] [blame] | 334 | err = xfs_da_read_buf(tp, dp, fbno, 0, bpp, XFS_DATA_FORK, |
Christoph Hellwig | f3fcb31 | 2019-11-20 09:46:03 -0800 | [diff] [blame] | 335 | &xfs_dir3_leafn_buf_ops); |
Darrick J. Wong | 402eef1 | 2024-04-15 14:54:39 -0700 | [diff] [blame] | 336 | if (err || !(*bpp)) |
| 337 | return err; |
| 338 | |
| 339 | fa = xfs_dir3_leaf_header_check(*bpp, owner); |
| 340 | if (fa) { |
| 341 | __xfs_buf_mark_corrupt(*bpp, fa); |
| 342 | xfs_trans_brelse(tp, *bpp); |
| 343 | *bpp = NULL; |
| 344 | xfs_dirattr_mark_sick(dp, XFS_DATA_FORK); |
| 345 | return -EFSCORRUPTED; |
| 346 | } |
| 347 | |
| 348 | if (tp) |
Dave Chinner | 61fe135 | 2013-04-03 16:11:30 +1100 | [diff] [blame] | 349 | xfs_trans_buf_set_type(tp, *bpp, XFS_BLFT_DIR_LEAFN_BUF); |
Darrick J. Wong | 402eef1 | 2024-04-15 14:54:39 -0700 | [diff] [blame] | 350 | return 0; |
Dave Chinner | 24df33b | 2013-04-12 07:30:21 +1000 | [diff] [blame] | 351 | } |
| 352 | |
| 353 | /* |
| 354 | * Initialize a new leaf block, leaf1 or leafn magic accepted. |
| 355 | */ |
| 356 | static void |
| 357 | xfs_dir3_leaf_init( |
Darrick J. Wong | 17a85dc | 2024-04-15 14:54:34 -0700 | [diff] [blame] | 358 | struct xfs_da_args *args, |
Dave Chinner | 24df33b | 2013-04-12 07:30:21 +1000 | [diff] [blame] | 359 | struct xfs_buf *bp, |
Darrick J. Wong | c8ce540 | 2017-06-16 11:00:05 -0700 | [diff] [blame] | 360 | uint16_t type) |
Dave Chinner | 24df33b | 2013-04-12 07:30:21 +1000 | [diff] [blame] | 361 | { |
Darrick J. Wong | 17a85dc | 2024-04-15 14:54:34 -0700 | [diff] [blame] | 362 | struct xfs_mount *mp = args->dp->i_mount; |
| 363 | struct xfs_trans *tp = args->trans; |
Dave Chinner | 24df33b | 2013-04-12 07:30:21 +1000 | [diff] [blame] | 364 | struct xfs_dir2_leaf *leaf = bp->b_addr; |
| 365 | |
| 366 | ASSERT(type == XFS_DIR2_LEAF1_MAGIC || type == XFS_DIR2_LEAFN_MAGIC); |
| 367 | |
Dave Chinner | 38c26bf | 2021-08-18 18:46:37 -0700 | [diff] [blame] | 368 | if (xfs_has_crc(mp)) { |
Dave Chinner | 24df33b | 2013-04-12 07:30:21 +1000 | [diff] [blame] | 369 | struct xfs_dir3_leaf_hdr *leaf3 = bp->b_addr; |
| 370 | |
| 371 | memset(leaf3, 0, sizeof(*leaf3)); |
| 372 | |
| 373 | leaf3->info.hdr.magic = (type == XFS_DIR2_LEAF1_MAGIC) |
| 374 | ? cpu_to_be16(XFS_DIR3_LEAF1_MAGIC) |
| 375 | : cpu_to_be16(XFS_DIR3_LEAFN_MAGIC); |
Dave Chinner | 9343ee7 | 2021-08-18 18:47:05 -0700 | [diff] [blame] | 376 | leaf3->info.blkno = cpu_to_be64(xfs_buf_daddr(bp)); |
Darrick J. Wong | 17a85dc | 2024-04-15 14:54:34 -0700 | [diff] [blame] | 377 | leaf3->info.owner = cpu_to_be64(args->owner); |
Eric Sandeen | ce748ea | 2015-07-29 11:53:31 +1000 | [diff] [blame] | 378 | uuid_copy(&leaf3->info.uuid, &mp->m_sb.sb_meta_uuid); |
Dave Chinner | 24df33b | 2013-04-12 07:30:21 +1000 | [diff] [blame] | 379 | } else { |
| 380 | memset(leaf, 0, sizeof(*leaf)); |
| 381 | leaf->hdr.info.magic = cpu_to_be16(type); |
| 382 | } |
| 383 | |
| 384 | /* |
| 385 | * If it's a leaf-format directory initialize the tail. |
| 386 | * Caller is responsible for initialising the bests table. |
| 387 | */ |
| 388 | if (type == XFS_DIR2_LEAF1_MAGIC) { |
| 389 | struct xfs_dir2_leaf_tail *ltp; |
| 390 | |
Dave Chinner | 8f66193 | 2014-06-06 15:15:59 +1000 | [diff] [blame] | 391 | ltp = xfs_dir2_leaf_tail_p(mp->m_dir_geo, leaf); |
Dave Chinner | 24df33b | 2013-04-12 07:30:21 +1000 | [diff] [blame] | 392 | ltp->bestcount = 0; |
| 393 | bp->b_ops = &xfs_dir3_leaf1_buf_ops; |
Dave Chinner | 61fe135 | 2013-04-03 16:11:30 +1100 | [diff] [blame] | 394 | xfs_trans_buf_set_type(tp, bp, XFS_BLFT_DIR_LEAF1_BUF); |
Dave Chinner | d75afeb | 2013-04-03 16:11:29 +1100 | [diff] [blame] | 395 | } else { |
Dave Chinner | 24df33b | 2013-04-12 07:30:21 +1000 | [diff] [blame] | 396 | bp->b_ops = &xfs_dir3_leafn_buf_ops; |
Dave Chinner | 61fe135 | 2013-04-03 16:11:30 +1100 | [diff] [blame] | 397 | xfs_trans_buf_set_type(tp, bp, XFS_BLFT_DIR_LEAFN_BUF); |
Dave Chinner | d75afeb | 2013-04-03 16:11:29 +1100 | [diff] [blame] | 398 | } |
Dave Chinner | 24df33b | 2013-04-12 07:30:21 +1000 | [diff] [blame] | 399 | } |
| 400 | |
| 401 | int |
| 402 | xfs_dir3_leaf_get_buf( |
| 403 | xfs_da_args_t *args, |
| 404 | xfs_dir2_db_t bno, |
| 405 | struct xfs_buf **bpp, |
Darrick J. Wong | c8ce540 | 2017-06-16 11:00:05 -0700 | [diff] [blame] | 406 | uint16_t magic) |
Dave Chinner | 24df33b | 2013-04-12 07:30:21 +1000 | [diff] [blame] | 407 | { |
| 408 | struct xfs_inode *dp = args->dp; |
| 409 | struct xfs_trans *tp = args->trans; |
Dave Chinner | 24df33b | 2013-04-12 07:30:21 +1000 | [diff] [blame] | 410 | struct xfs_buf *bp; |
| 411 | int error; |
| 412 | |
| 413 | ASSERT(magic == XFS_DIR2_LEAF1_MAGIC || magic == XFS_DIR2_LEAFN_MAGIC); |
Dave Chinner | 3002803 | 2014-06-06 15:08:18 +1000 | [diff] [blame] | 414 | ASSERT(bno >= xfs_dir2_byte_to_db(args->geo, XFS_DIR2_LEAF_OFFSET) && |
| 415 | bno < xfs_dir2_byte_to_db(args->geo, XFS_DIR2_FREE_OFFSET)); |
Dave Chinner | 24df33b | 2013-04-12 07:30:21 +1000 | [diff] [blame] | 416 | |
Dave Chinner | 2998ab1d | 2014-06-06 15:07:53 +1000 | [diff] [blame] | 417 | error = xfs_da_get_buf(tp, dp, xfs_dir2_db_to_da(args->geo, bno), |
Christoph Hellwig | 2911edb | 2019-11-20 09:46:05 -0800 | [diff] [blame] | 418 | &bp, XFS_DATA_FORK); |
Dave Chinner | 24df33b | 2013-04-12 07:30:21 +1000 | [diff] [blame] | 419 | if (error) |
| 420 | return error; |
| 421 | |
Darrick J. Wong | 17a85dc | 2024-04-15 14:54:34 -0700 | [diff] [blame] | 422 | xfs_dir3_leaf_init(args, bp, magic); |
Dave Chinner | bc85178 | 2014-06-06 15:20:54 +1000 | [diff] [blame] | 423 | xfs_dir3_leaf_log_header(args, bp); |
Dave Chinner | 24df33b | 2013-04-12 07:30:21 +1000 | [diff] [blame] | 424 | if (magic == XFS_DIR2_LEAF1_MAGIC) |
Dave Chinner | bc85178 | 2014-06-06 15:20:54 +1000 | [diff] [blame] | 425 | xfs_dir3_leaf_log_tail(args, bp); |
Dave Chinner | 24df33b | 2013-04-12 07:30:21 +1000 | [diff] [blame] | 426 | *bpp = bp; |
| 427 | return 0; |
Dave Chinner | e6f7667 | 2012-11-12 22:54:15 +1100 | [diff] [blame] | 428 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 429 | |
| 430 | /* |
| 431 | * Convert a block form directory to a leaf form directory. |
| 432 | */ |
| 433 | int /* error */ |
| 434 | xfs_dir2_block_to_leaf( |
| 435 | xfs_da_args_t *args, /* operation arguments */ |
Dave Chinner | 1d9025e | 2012-06-22 18:50:14 +1000 | [diff] [blame] | 436 | struct xfs_buf *dbp) /* input block's buffer */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 437 | { |
Nathan Scott | 68b3a10 | 2006-03-17 17:27:19 +1100 | [diff] [blame] | 438 | __be16 *bestsp; /* leaf's bestsp entries */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 439 | xfs_dablk_t blkno; /* leaf block's bno */ |
Christoph Hellwig | 4f6ae1a | 2011-07-08 14:35:27 +0200 | [diff] [blame] | 440 | xfs_dir2_data_hdr_t *hdr; /* block header */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 441 | xfs_dir2_leaf_entry_t *blp; /* block's leaf entries */ |
| 442 | xfs_dir2_block_tail_t *btp; /* block's tail */ |
| 443 | xfs_inode_t *dp; /* incore directory inode */ |
| 444 | int error; /* error return code */ |
Dave Chinner | 1d9025e | 2012-06-22 18:50:14 +1000 | [diff] [blame] | 445 | struct xfs_buf *lbp; /* leaf block's buffer */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 446 | xfs_dir2_db_t ldb; /* leaf block's bno */ |
| 447 | xfs_dir2_leaf_t *leaf; /* leaf structure */ |
| 448 | xfs_dir2_leaf_tail_t *ltp; /* leaf's tail */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 449 | int needlog; /* need to log block header */ |
| 450 | int needscan; /* need to rescan bestfree */ |
| 451 | xfs_trans_t *tp; /* transaction pointer */ |
Dave Chinner | 33363fe | 2013-04-03 16:11:22 +1100 | [diff] [blame] | 452 | struct xfs_dir2_data_free *bf; |
Dave Chinner | 24df33b | 2013-04-12 07:30:21 +1000 | [diff] [blame] | 453 | struct xfs_dir3_icleaf_hdr leafhdr; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 454 | |
Christoph Hellwig | 0b1b213 | 2009-12-14 23:14:59 +0000 | [diff] [blame] | 455 | trace_xfs_dir2_block_to_leaf(args); |
| 456 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 457 | dp = args->dp; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 458 | tp = args->trans; |
| 459 | /* |
| 460 | * Add the leaf block to the inode. |
| 461 | * This interface will only put blocks in the leaf/node range. |
| 462 | * Since that's empty now, we'll get the root (block 0 in range). |
| 463 | */ |
| 464 | if ((error = xfs_da_grow_inode(args, &blkno))) { |
| 465 | return error; |
| 466 | } |
Dave Chinner | 2998ab1d | 2014-06-06 15:07:53 +1000 | [diff] [blame] | 467 | ldb = xfs_dir2_da_to_db(args->geo, blkno); |
Dave Chinner | 3002803 | 2014-06-06 15:08:18 +1000 | [diff] [blame] | 468 | ASSERT(ldb == xfs_dir2_byte_to_db(args->geo, XFS_DIR2_LEAF_OFFSET)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 469 | /* |
| 470 | * Initialize the leaf block, get a buffer for it. |
| 471 | */ |
Dave Chinner | 24df33b | 2013-04-12 07:30:21 +1000 | [diff] [blame] | 472 | error = xfs_dir3_leaf_get_buf(args, ldb, &lbp, XFS_DIR2_LEAF1_MAGIC); |
| 473 | if (error) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 474 | return error; |
Dave Chinner | 24df33b | 2013-04-12 07:30:21 +1000 | [diff] [blame] | 475 | |
Dave Chinner | 1d9025e | 2012-06-22 18:50:14 +1000 | [diff] [blame] | 476 | leaf = lbp->b_addr; |
| 477 | hdr = dbp->b_addr; |
Dave Chinner | 33363fe | 2013-04-03 16:11:22 +1100 | [diff] [blame] | 478 | xfs_dir3_data_check(dp, dbp); |
Dave Chinner | 8f66193 | 2014-06-06 15:15:59 +1000 | [diff] [blame] | 479 | btp = xfs_dir2_block_tail_p(args->geo, hdr); |
Christoph Hellwig | bbaaf53 | 2007-06-28 16:43:50 +1000 | [diff] [blame] | 480 | blp = xfs_dir2_block_leaf_p(btp); |
Christoph Hellwig | 1848b60 | 2019-11-08 15:05:39 -0800 | [diff] [blame] | 481 | bf = xfs_dir2_data_bestfree_p(dp->i_mount, hdr); |
Dave Chinner | 24df33b | 2013-04-12 07:30:21 +1000 | [diff] [blame] | 482 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 483 | /* |
| 484 | * Set the counts in the leaf header. |
| 485 | */ |
Christoph Hellwig | 5184255 | 2019-11-08 14:57:49 -0800 | [diff] [blame] | 486 | xfs_dir2_leaf_hdr_from_disk(dp->i_mount, &leafhdr, leaf); |
Dave Chinner | 24df33b | 2013-04-12 07:30:21 +1000 | [diff] [blame] | 487 | leafhdr.count = be32_to_cpu(btp->count); |
| 488 | leafhdr.stale = be32_to_cpu(btp->stale); |
Christoph Hellwig | 163fbbb | 2019-11-08 14:57:50 -0800 | [diff] [blame] | 489 | xfs_dir2_leaf_hdr_to_disk(dp->i_mount, leaf, &leafhdr); |
Dave Chinner | bc85178 | 2014-06-06 15:20:54 +1000 | [diff] [blame] | 490 | xfs_dir3_leaf_log_header(args, lbp); |
Dave Chinner | 24df33b | 2013-04-12 07:30:21 +1000 | [diff] [blame] | 491 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 492 | /* |
| 493 | * Could compact these but I think we always do the conversion |
| 494 | * after squeezing out stale entries. |
| 495 | */ |
Christoph Hellwig | 787b089 | 2019-11-08 14:57:50 -0800 | [diff] [blame] | 496 | memcpy(leafhdr.ents, blp, |
| 497 | be32_to_cpu(btp->count) * sizeof(struct xfs_dir2_leaf_entry)); |
| 498 | xfs_dir3_leaf_log_ents(args, &leafhdr, lbp, 0, leafhdr.count - 1); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 499 | needscan = 0; |
| 500 | needlog = 1; |
| 501 | /* |
| 502 | * Make the space formerly occupied by the leaf entries and block |
| 503 | * tail be free. |
| 504 | */ |
Dave Chinner | bc85178 | 2014-06-06 15:20:54 +1000 | [diff] [blame] | 505 | xfs_dir2_data_make_free(args, dbp, |
Christoph Hellwig | 4f6ae1a | 2011-07-08 14:35:27 +0200 | [diff] [blame] | 506 | (xfs_dir2_data_aoff_t)((char *)blp - (char *)hdr), |
Dave Chinner | 8f66193 | 2014-06-06 15:15:59 +1000 | [diff] [blame] | 507 | (xfs_dir2_data_aoff_t)((char *)hdr + args->geo->blksize - |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 508 | (char *)blp), |
| 509 | &needlog, &needscan); |
| 510 | /* |
| 511 | * Fix up the block header, make it a data block. |
| 512 | */ |
Dave Chinner | 33363fe | 2013-04-03 16:11:22 +1100 | [diff] [blame] | 513 | dbp->b_ops = &xfs_dir3_data_buf_ops; |
Dave Chinner | 61fe135 | 2013-04-03 16:11:30 +1100 | [diff] [blame] | 514 | xfs_trans_buf_set_type(tp, dbp, XFS_BLFT_DIR_DATA_BUF); |
Dave Chinner | 33363fe | 2013-04-03 16:11:22 +1100 | [diff] [blame] | 515 | if (hdr->magic == cpu_to_be32(XFS_DIR2_BLOCK_MAGIC)) |
| 516 | hdr->magic = cpu_to_be32(XFS_DIR2_DATA_MAGIC); |
| 517 | else |
| 518 | hdr->magic = cpu_to_be32(XFS_DIR3_DATA_MAGIC); |
| 519 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 520 | if (needscan) |
Christoph Hellwig | ae42976 | 2019-11-08 15:06:02 -0800 | [diff] [blame] | 521 | xfs_dir2_data_freescan(dp->i_mount, hdr, &needlog); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 522 | /* |
| 523 | * Set up leaf tail and bests table. |
| 524 | */ |
Dave Chinner | 8f66193 | 2014-06-06 15:15:59 +1000 | [diff] [blame] | 525 | ltp = xfs_dir2_leaf_tail_p(args->geo, leaf); |
Nathan Scott | afbcb3f | 2006-03-17 17:27:28 +1100 | [diff] [blame] | 526 | ltp->bestcount = cpu_to_be32(1); |
Christoph Hellwig | bbaaf53 | 2007-06-28 16:43:50 +1000 | [diff] [blame] | 527 | bestsp = xfs_dir2_leaf_bests_p(ltp); |
Dave Chinner | f5f3d9b | 2013-04-03 16:11:20 +1100 | [diff] [blame] | 528 | bestsp[0] = bf[0].length; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 529 | /* |
| 530 | * Log the data header and leaf bests table. |
| 531 | */ |
| 532 | if (needlog) |
Dave Chinner | bc85178 | 2014-06-06 15:20:54 +1000 | [diff] [blame] | 533 | xfs_dir2_data_log_header(args, dbp); |
Dave Chinner | 4141956 | 2013-10-29 22:11:50 +1100 | [diff] [blame] | 534 | xfs_dir3_leaf_check(dp, lbp); |
Dave Chinner | 33363fe | 2013-04-03 16:11:22 +1100 | [diff] [blame] | 535 | xfs_dir3_data_check(dp, dbp); |
Dave Chinner | bc85178 | 2014-06-06 15:20:54 +1000 | [diff] [blame] | 536 | xfs_dir3_leaf_log_bests(args, lbp, 0, 0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 537 | return 0; |
| 538 | } |
| 539 | |
Christoph Hellwig | a230a1d | 2011-07-13 13:43:48 +0200 | [diff] [blame] | 540 | STATIC void |
Dave Chinner | 24df33b | 2013-04-12 07:30:21 +1000 | [diff] [blame] | 541 | xfs_dir3_leaf_find_stale( |
| 542 | struct xfs_dir3_icleaf_hdr *leafhdr, |
| 543 | struct xfs_dir2_leaf_entry *ents, |
Christoph Hellwig | a230a1d | 2011-07-13 13:43:48 +0200 | [diff] [blame] | 544 | int index, |
| 545 | int *lowstale, |
| 546 | int *highstale) |
| 547 | { |
| 548 | /* |
| 549 | * Find the first stale entry before our index, if any. |
| 550 | */ |
| 551 | for (*lowstale = index - 1; *lowstale >= 0; --*lowstale) { |
Dave Chinner | 24df33b | 2013-04-12 07:30:21 +1000 | [diff] [blame] | 552 | if (ents[*lowstale].address == |
Christoph Hellwig | a230a1d | 2011-07-13 13:43:48 +0200 | [diff] [blame] | 553 | cpu_to_be32(XFS_DIR2_NULL_DATAPTR)) |
| 554 | break; |
| 555 | } |
| 556 | |
| 557 | /* |
| 558 | * Find the first stale entry at or after our index, if any. |
| 559 | * Stop if the result would require moving more entries than using |
| 560 | * lowstale. |
| 561 | */ |
Dave Chinner | 24df33b | 2013-04-12 07:30:21 +1000 | [diff] [blame] | 562 | for (*highstale = index; *highstale < leafhdr->count; ++*highstale) { |
| 563 | if (ents[*highstale].address == |
Christoph Hellwig | a230a1d | 2011-07-13 13:43:48 +0200 | [diff] [blame] | 564 | cpu_to_be32(XFS_DIR2_NULL_DATAPTR)) |
| 565 | break; |
| 566 | if (*lowstale >= 0 && index - *lowstale <= *highstale - index) |
| 567 | break; |
| 568 | } |
| 569 | } |
| 570 | |
Christoph Hellwig | 4fb44c8 | 2011-07-08 14:34:59 +0200 | [diff] [blame] | 571 | struct xfs_dir2_leaf_entry * |
Dave Chinner | 24df33b | 2013-04-12 07:30:21 +1000 | [diff] [blame] | 572 | xfs_dir3_leaf_find_entry( |
| 573 | struct xfs_dir3_icleaf_hdr *leafhdr, |
| 574 | struct xfs_dir2_leaf_entry *ents, |
Christoph Hellwig | 4fb44c8 | 2011-07-08 14:34:59 +0200 | [diff] [blame] | 575 | int index, /* leaf table position */ |
| 576 | int compact, /* need to compact leaves */ |
| 577 | int lowstale, /* index of prev stale leaf */ |
| 578 | int highstale, /* index of next stale leaf */ |
| 579 | int *lfloglow, /* low leaf logging index */ |
| 580 | int *lfloghigh) /* high leaf logging index */ |
| 581 | { |
Dave Chinner | 24df33b | 2013-04-12 07:30:21 +1000 | [diff] [blame] | 582 | if (!leafhdr->stale) { |
Christoph Hellwig | 4fb44c8 | 2011-07-08 14:34:59 +0200 | [diff] [blame] | 583 | xfs_dir2_leaf_entry_t *lep; /* leaf entry table pointer */ |
| 584 | |
| 585 | /* |
| 586 | * Now we need to make room to insert the leaf entry. |
| 587 | * |
| 588 | * If there are no stale entries, just insert a hole at index. |
| 589 | */ |
Dave Chinner | 24df33b | 2013-04-12 07:30:21 +1000 | [diff] [blame] | 590 | lep = &ents[index]; |
| 591 | if (index < leafhdr->count) |
Christoph Hellwig | 4fb44c8 | 2011-07-08 14:34:59 +0200 | [diff] [blame] | 592 | memmove(lep + 1, lep, |
Dave Chinner | 24df33b | 2013-04-12 07:30:21 +1000 | [diff] [blame] | 593 | (leafhdr->count - index) * sizeof(*lep)); |
Christoph Hellwig | 4fb44c8 | 2011-07-08 14:34:59 +0200 | [diff] [blame] | 594 | |
| 595 | /* |
| 596 | * Record low and high logging indices for the leaf. |
| 597 | */ |
| 598 | *lfloglow = index; |
Dave Chinner | 24df33b | 2013-04-12 07:30:21 +1000 | [diff] [blame] | 599 | *lfloghigh = leafhdr->count++; |
Christoph Hellwig | 4fb44c8 | 2011-07-08 14:34:59 +0200 | [diff] [blame] | 600 | return lep; |
| 601 | } |
| 602 | |
| 603 | /* |
| 604 | * There are stale entries. |
| 605 | * |
| 606 | * We will use one of them for the new entry. It's probably not at |
| 607 | * the right location, so we'll have to shift some up or down first. |
| 608 | * |
| 609 | * If we didn't compact before, we need to find the nearest stale |
| 610 | * entries before and after our insertion point. |
| 611 | */ |
Christoph Hellwig | a230a1d | 2011-07-13 13:43:48 +0200 | [diff] [blame] | 612 | if (compact == 0) |
Dave Chinner | 24df33b | 2013-04-12 07:30:21 +1000 | [diff] [blame] | 613 | xfs_dir3_leaf_find_stale(leafhdr, ents, index, |
| 614 | &lowstale, &highstale); |
Christoph Hellwig | 4fb44c8 | 2011-07-08 14:34:59 +0200 | [diff] [blame] | 615 | |
| 616 | /* |
| 617 | * If the low one is better, use it. |
| 618 | */ |
| 619 | if (lowstale >= 0 && |
Dave Chinner | 24df33b | 2013-04-12 07:30:21 +1000 | [diff] [blame] | 620 | (highstale == leafhdr->count || |
Christoph Hellwig | 4fb44c8 | 2011-07-08 14:34:59 +0200 | [diff] [blame] | 621 | index - lowstale - 1 < highstale - index)) { |
| 622 | ASSERT(index - lowstale - 1 >= 0); |
Dave Chinner | 24df33b | 2013-04-12 07:30:21 +1000 | [diff] [blame] | 623 | ASSERT(ents[lowstale].address == |
Christoph Hellwig | 69ef921 | 2011-07-08 14:36:05 +0200 | [diff] [blame] | 624 | cpu_to_be32(XFS_DIR2_NULL_DATAPTR)); |
Christoph Hellwig | 4fb44c8 | 2011-07-08 14:34:59 +0200 | [diff] [blame] | 625 | |
| 626 | /* |
| 627 | * Copy entries up to cover the stale entry and make room |
| 628 | * for the new entry. |
| 629 | */ |
| 630 | if (index - lowstale - 1 > 0) { |
Dave Chinner | 24df33b | 2013-04-12 07:30:21 +1000 | [diff] [blame] | 631 | memmove(&ents[lowstale], &ents[lowstale + 1], |
Christoph Hellwig | 4fb44c8 | 2011-07-08 14:34:59 +0200 | [diff] [blame] | 632 | (index - lowstale - 1) * |
Dave Chinner | 24df33b | 2013-04-12 07:30:21 +1000 | [diff] [blame] | 633 | sizeof(xfs_dir2_leaf_entry_t)); |
Christoph Hellwig | 4fb44c8 | 2011-07-08 14:34:59 +0200 | [diff] [blame] | 634 | } |
Dave Chinner | 9bb54cb | 2018-06-07 07:54:02 -0700 | [diff] [blame] | 635 | *lfloglow = min(lowstale, *lfloglow); |
| 636 | *lfloghigh = max(index - 1, *lfloghigh); |
Dave Chinner | 24df33b | 2013-04-12 07:30:21 +1000 | [diff] [blame] | 637 | leafhdr->stale--; |
| 638 | return &ents[index - 1]; |
Christoph Hellwig | 4fb44c8 | 2011-07-08 14:34:59 +0200 | [diff] [blame] | 639 | } |
| 640 | |
| 641 | /* |
| 642 | * The high one is better, so use that one. |
| 643 | */ |
| 644 | ASSERT(highstale - index >= 0); |
Dave Chinner | 24df33b | 2013-04-12 07:30:21 +1000 | [diff] [blame] | 645 | ASSERT(ents[highstale].address == cpu_to_be32(XFS_DIR2_NULL_DATAPTR)); |
Christoph Hellwig | 4fb44c8 | 2011-07-08 14:34:59 +0200 | [diff] [blame] | 646 | |
| 647 | /* |
| 648 | * Copy entries down to cover the stale entry and make room for the |
| 649 | * new entry. |
| 650 | */ |
| 651 | if (highstale - index > 0) { |
Dave Chinner | 24df33b | 2013-04-12 07:30:21 +1000 | [diff] [blame] | 652 | memmove(&ents[index + 1], &ents[index], |
Christoph Hellwig | 4fb44c8 | 2011-07-08 14:34:59 +0200 | [diff] [blame] | 653 | (highstale - index) * sizeof(xfs_dir2_leaf_entry_t)); |
| 654 | } |
Dave Chinner | 9bb54cb | 2018-06-07 07:54:02 -0700 | [diff] [blame] | 655 | *lfloglow = min(index, *lfloglow); |
| 656 | *lfloghigh = max(highstale, *lfloghigh); |
Dave Chinner | 24df33b | 2013-04-12 07:30:21 +1000 | [diff] [blame] | 657 | leafhdr->stale--; |
| 658 | return &ents[index]; |
Christoph Hellwig | 4fb44c8 | 2011-07-08 14:34:59 +0200 | [diff] [blame] | 659 | } |
| 660 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 661 | /* |
| 662 | * Add an entry to a leaf form directory. |
| 663 | */ |
| 664 | int /* error */ |
| 665 | xfs_dir2_leaf_addname( |
Darrick J. Wong | 6ef50fe | 2019-03-10 11:46:28 -0700 | [diff] [blame] | 666 | struct xfs_da_args *args) /* operation arguments */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 667 | { |
Darrick J. Wong | 6ef50fe | 2019-03-10 11:46:28 -0700 | [diff] [blame] | 668 | struct xfs_dir3_icleaf_hdr leafhdr; |
| 669 | struct xfs_trans *tp = args->trans; |
Nathan Scott | 68b3a10 | 2006-03-17 17:27:19 +1100 | [diff] [blame] | 670 | __be16 *bestsp; /* freespace table in leaf */ |
Darrick J. Wong | 6ef50fe | 2019-03-10 11:46:28 -0700 | [diff] [blame] | 671 | __be16 *tagp; /* end of data entry */ |
Dave Chinner | 1d9025e | 2012-06-22 18:50:14 +1000 | [diff] [blame] | 672 | struct xfs_buf *dbp; /* data block buffer */ |
Darrick J. Wong | 6ef50fe | 2019-03-10 11:46:28 -0700 | [diff] [blame] | 673 | struct xfs_buf *lbp; /* leaf's buffer */ |
| 674 | struct xfs_dir2_leaf *leaf; /* leaf structure */ |
| 675 | struct xfs_inode *dp = args->dp; /* incore directory inode */ |
| 676 | struct xfs_dir2_data_hdr *hdr; /* data block header */ |
| 677 | struct xfs_dir2_data_entry *dep; /* data block entry */ |
| 678 | struct xfs_dir2_leaf_entry *lep; /* leaf entry table pointer */ |
| 679 | struct xfs_dir2_leaf_entry *ents; |
| 680 | struct xfs_dir2_data_unused *dup; /* data unused entry */ |
| 681 | struct xfs_dir2_leaf_tail *ltp; /* leaf tail pointer */ |
| 682 | struct xfs_dir2_data_free *bf; /* bestfree table */ |
| 683 | int compact; /* need to compact leaves */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 684 | int error; /* error return value */ |
| 685 | int grown; /* allocated new data block */ |
Darrick J. Wong | f51fac6 | 2019-03-10 11:41:31 -0700 | [diff] [blame] | 686 | int highstale = 0; /* index of next stale leaf */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 687 | int i; /* temporary, index */ |
| 688 | int index; /* leaf table position */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 689 | int length; /* length of new entry */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 690 | int lfloglow; /* low leaf logging index */ |
| 691 | int lfloghigh; /* high leaf logging index */ |
Darrick J. Wong | f51fac6 | 2019-03-10 11:41:31 -0700 | [diff] [blame] | 692 | int lowstale = 0; /* index of prev stale leaf */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 693 | int needbytes; /* leaf block bytes needed */ |
| 694 | int needlog; /* need to log data header */ |
| 695 | int needscan; /* need to rescan data free */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 696 | xfs_dir2_db_t use_block; /* data block number */ |
| 697 | |
Christoph Hellwig | 0b1b213 | 2009-12-14 23:14:59 +0000 | [diff] [blame] | 698 | trace_xfs_dir2_leaf_addname(args); |
| 699 | |
Darrick J. Wong | 402eef1 | 2024-04-15 14:54:39 -0700 | [diff] [blame] | 700 | error = xfs_dir3_leaf_read(tp, dp, args->owner, args->geo->leafblk, |
| 701 | &lbp); |
Dave Chinner | 4bb20a8 | 2012-11-12 22:54:10 +1100 | [diff] [blame] | 702 | if (error) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 703 | return error; |
Dave Chinner | e6f7667 | 2012-11-12 22:54:15 +1100 | [diff] [blame] | 704 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 705 | /* |
| 706 | * Look up the entry by hash value and name. |
| 707 | * We know it's not there, our caller has already done a lookup. |
| 708 | * So the index is of the entry to insert in front of. |
| 709 | * But if there are dup hash values the index is of the first of those. |
| 710 | */ |
| 711 | index = xfs_dir2_leaf_search_hash(args, lbp); |
Dave Chinner | 1d9025e | 2012-06-22 18:50:14 +1000 | [diff] [blame] | 712 | leaf = lbp->b_addr; |
Dave Chinner | 8f66193 | 2014-06-06 15:15:59 +1000 | [diff] [blame] | 713 | ltp = xfs_dir2_leaf_tail_p(args->geo, leaf); |
Christoph Hellwig | 5184255 | 2019-11-08 14:57:49 -0800 | [diff] [blame] | 714 | xfs_dir2_leaf_hdr_from_disk(dp->i_mount, &leafhdr, leaf); |
Christoph Hellwig | 787b089 | 2019-11-08 14:57:50 -0800 | [diff] [blame] | 715 | ents = leafhdr.ents; |
Christoph Hellwig | bbaaf53 | 2007-06-28 16:43:50 +1000 | [diff] [blame] | 716 | bestsp = xfs_dir2_leaf_bests_p(ltp); |
Christoph Hellwig | fdbb8c5 | 2019-11-08 15:05:37 -0800 | [diff] [blame] | 717 | length = xfs_dir2_data_entsize(dp->i_mount, args->namelen); |
Dave Chinner | 24df33b | 2013-04-12 07:30:21 +1000 | [diff] [blame] | 718 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 719 | /* |
| 720 | * See if there are any entries with the same hash value |
| 721 | * and space in their block for the new entry. |
| 722 | * This is good because it puts multiple same-hash value entries |
| 723 | * in a data block, improving the lookup of those entries. |
| 724 | */ |
Dave Chinner | 24df33b | 2013-04-12 07:30:21 +1000 | [diff] [blame] | 725 | for (use_block = -1, lep = &ents[index]; |
| 726 | index < leafhdr.count && be32_to_cpu(lep->hashval) == args->hashval; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 727 | index++, lep++) { |
Nathan Scott | 3c1f9c1 | 2006-03-17 17:28:18 +1100 | [diff] [blame] | 728 | if (be32_to_cpu(lep->address) == XFS_DIR2_NULL_DATAPTR) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 729 | continue; |
Dave Chinner | 3002803 | 2014-06-06 15:08:18 +1000 | [diff] [blame] | 730 | i = xfs_dir2_dataptr_to_db(args->geo, be32_to_cpu(lep->address)); |
Nathan Scott | afbcb3f | 2006-03-17 17:27:28 +1100 | [diff] [blame] | 731 | ASSERT(i < be32_to_cpu(ltp->bestcount)); |
Christoph Hellwig | 69ef921 | 2011-07-08 14:36:05 +0200 | [diff] [blame] | 732 | ASSERT(bestsp[i] != cpu_to_be16(NULLDATAOFF)); |
Nathan Scott | 68b3a10 | 2006-03-17 17:27:19 +1100 | [diff] [blame] | 733 | if (be16_to_cpu(bestsp[i]) >= length) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 734 | use_block = i; |
| 735 | break; |
| 736 | } |
| 737 | } |
| 738 | /* |
| 739 | * Didn't find a block yet, linear search all the data blocks. |
| 740 | */ |
| 741 | if (use_block == -1) { |
Nathan Scott | afbcb3f | 2006-03-17 17:27:28 +1100 | [diff] [blame] | 742 | for (i = 0; i < be32_to_cpu(ltp->bestcount); i++) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 743 | /* |
| 744 | * Remember a block we see that's missing. |
| 745 | */ |
Christoph Hellwig | 69ef921 | 2011-07-08 14:36:05 +0200 | [diff] [blame] | 746 | if (bestsp[i] == cpu_to_be16(NULLDATAOFF) && |
| 747 | use_block == -1) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 748 | use_block = i; |
Nathan Scott | 68b3a10 | 2006-03-17 17:27:19 +1100 | [diff] [blame] | 749 | else if (be16_to_cpu(bestsp[i]) >= length) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 750 | use_block = i; |
| 751 | break; |
| 752 | } |
| 753 | } |
| 754 | } |
| 755 | /* |
| 756 | * How many bytes do we need in the leaf block? |
| 757 | */ |
Christoph Hellwig | 2282396 | 2011-07-08 14:35:53 +0200 | [diff] [blame] | 758 | needbytes = 0; |
Dave Chinner | 24df33b | 2013-04-12 07:30:21 +1000 | [diff] [blame] | 759 | if (!leafhdr.stale) |
Christoph Hellwig | 2282396 | 2011-07-08 14:35:53 +0200 | [diff] [blame] | 760 | needbytes += sizeof(xfs_dir2_leaf_entry_t); |
| 761 | if (use_block == -1) |
| 762 | needbytes += sizeof(xfs_dir2_data_off_t); |
| 763 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 764 | /* |
| 765 | * Now kill use_block if it refers to a missing block, so we |
| 766 | * can use it as an indication of allocation needed. |
| 767 | */ |
Christoph Hellwig | 69ef921 | 2011-07-08 14:36:05 +0200 | [diff] [blame] | 768 | if (use_block != -1 && bestsp[use_block] == cpu_to_be16(NULLDATAOFF)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 769 | use_block = -1; |
| 770 | /* |
| 771 | * If we don't have enough free bytes but we can make enough |
| 772 | * by compacting out stale entries, we'll do that. |
| 773 | */ |
Dave Chinner | 24df33b | 2013-04-12 07:30:21 +1000 | [diff] [blame] | 774 | if ((char *)bestsp - (char *)&ents[leafhdr.count] < needbytes && |
| 775 | leafhdr.stale > 1) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 776 | compact = 1; |
Dave Chinner | 24df33b | 2013-04-12 07:30:21 +1000 | [diff] [blame] | 777 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 778 | /* |
| 779 | * Otherwise if we don't have enough free bytes we need to |
| 780 | * convert to node form. |
| 781 | */ |
Dave Chinner | 24df33b | 2013-04-12 07:30:21 +1000 | [diff] [blame] | 782 | else if ((char *)bestsp - (char *)&ents[leafhdr.count] < needbytes) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 783 | /* |
| 784 | * Just checking or no space reservation, give up. |
| 785 | */ |
Barry Naujok | 6a17810 | 2008-05-21 16:42:05 +1000 | [diff] [blame] | 786 | if ((args->op_flags & XFS_DA_OP_JUSTCHECK) || |
| 787 | args->total == 0) { |
Dave Chinner | 1d9025e | 2012-06-22 18:50:14 +1000 | [diff] [blame] | 788 | xfs_trans_brelse(tp, lbp); |
Dave Chinner | 2451337 | 2014-06-25 14:58:08 +1000 | [diff] [blame] | 789 | return -ENOSPC; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 790 | } |
| 791 | /* |
| 792 | * Convert to node form. |
| 793 | */ |
| 794 | error = xfs_dir2_leaf_to_node(args, lbp); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 795 | if (error) |
| 796 | return error; |
| 797 | /* |
| 798 | * Then add the new entry. |
| 799 | */ |
| 800 | return xfs_dir2_node_addname(args); |
| 801 | } |
| 802 | /* |
| 803 | * Otherwise it will fit without compaction. |
| 804 | */ |
| 805 | else |
| 806 | compact = 0; |
| 807 | /* |
| 808 | * If just checking, then it will fit unless we needed to allocate |
| 809 | * a new data block. |
| 810 | */ |
Barry Naujok | 6a17810 | 2008-05-21 16:42:05 +1000 | [diff] [blame] | 811 | if (args->op_flags & XFS_DA_OP_JUSTCHECK) { |
Dave Chinner | 1d9025e | 2012-06-22 18:50:14 +1000 | [diff] [blame] | 812 | xfs_trans_brelse(tp, lbp); |
Dave Chinner | 2451337 | 2014-06-25 14:58:08 +1000 | [diff] [blame] | 813 | return use_block == -1 ? -ENOSPC : 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 814 | } |
| 815 | /* |
| 816 | * If no allocations are allowed, return now before we've |
| 817 | * changed anything. |
| 818 | */ |
| 819 | if (args->total == 0 && use_block == -1) { |
Dave Chinner | 1d9025e | 2012-06-22 18:50:14 +1000 | [diff] [blame] | 820 | xfs_trans_brelse(tp, lbp); |
Dave Chinner | 2451337 | 2014-06-25 14:58:08 +1000 | [diff] [blame] | 821 | return -ENOSPC; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 822 | } |
| 823 | /* |
| 824 | * Need to compact the leaf entries, removing stale ones. |
| 825 | * Leave one stale entry behind - the one closest to our |
| 826 | * insertion index - and we'll shift that one to our insertion |
| 827 | * point later. |
| 828 | */ |
| 829 | if (compact) { |
Dave Chinner | 24df33b | 2013-04-12 07:30:21 +1000 | [diff] [blame] | 830 | xfs_dir3_leaf_compact_x1(&leafhdr, ents, &index, &lowstale, |
| 831 | &highstale, &lfloglow, &lfloghigh); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 832 | } |
| 833 | /* |
| 834 | * There are stale entries, so we'll need log-low and log-high |
| 835 | * impossibly bad values later. |
| 836 | */ |
Dave Chinner | 24df33b | 2013-04-12 07:30:21 +1000 | [diff] [blame] | 837 | else if (leafhdr.stale) { |
| 838 | lfloglow = leafhdr.count; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 839 | lfloghigh = -1; |
| 840 | } |
| 841 | /* |
| 842 | * If there was no data block space found, we need to allocate |
| 843 | * a new one. |
| 844 | */ |
| 845 | if (use_block == -1) { |
| 846 | /* |
| 847 | * Add the new data block. |
| 848 | */ |
| 849 | if ((error = xfs_dir2_grow_inode(args, XFS_DIR2_DATA_SPACE, |
| 850 | &use_block))) { |
Dave Chinner | 1d9025e | 2012-06-22 18:50:14 +1000 | [diff] [blame] | 851 | xfs_trans_brelse(tp, lbp); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 852 | return error; |
| 853 | } |
| 854 | /* |
| 855 | * Initialize the block. |
| 856 | */ |
Dave Chinner | f5f3d9b | 2013-04-03 16:11:20 +1100 | [diff] [blame] | 857 | if ((error = xfs_dir3_data_init(args, use_block, &dbp))) { |
Dave Chinner | 1d9025e | 2012-06-22 18:50:14 +1000 | [diff] [blame] | 858 | xfs_trans_brelse(tp, lbp); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 859 | return error; |
| 860 | } |
| 861 | /* |
| 862 | * If we're adding a new data block on the end we need to |
| 863 | * extend the bests table. Copy it up one entry. |
| 864 | */ |
Nathan Scott | afbcb3f | 2006-03-17 17:27:28 +1100 | [diff] [blame] | 865 | if (use_block >= be32_to_cpu(ltp->bestcount)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 866 | bestsp--; |
| 867 | memmove(&bestsp[0], &bestsp[1], |
Nathan Scott | afbcb3f | 2006-03-17 17:27:28 +1100 | [diff] [blame] | 868 | be32_to_cpu(ltp->bestcount) * sizeof(bestsp[0])); |
Marcin Slusarz | 413d57c | 2008-02-13 15:03:29 -0800 | [diff] [blame] | 869 | be32_add_cpu(<p->bestcount, 1); |
Dave Chinner | bc85178 | 2014-06-06 15:20:54 +1000 | [diff] [blame] | 870 | xfs_dir3_leaf_log_tail(args, lbp); |
| 871 | xfs_dir3_leaf_log_bests(args, lbp, 0, |
| 872 | be32_to_cpu(ltp->bestcount) - 1); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 873 | } |
| 874 | /* |
| 875 | * If we're filling in a previously empty block just log it. |
| 876 | */ |
| 877 | else |
Dave Chinner | bc85178 | 2014-06-06 15:20:54 +1000 | [diff] [blame] | 878 | xfs_dir3_leaf_log_bests(args, lbp, use_block, use_block); |
Dave Chinner | 1d9025e | 2012-06-22 18:50:14 +1000 | [diff] [blame] | 879 | hdr = dbp->b_addr; |
Christoph Hellwig | 1848b60 | 2019-11-08 15:05:39 -0800 | [diff] [blame] | 880 | bf = xfs_dir2_data_bestfree_p(dp->i_mount, hdr); |
Dave Chinner | 33363fe | 2013-04-03 16:11:22 +1100 | [diff] [blame] | 881 | bestsp[use_block] = bf[0].length; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 882 | grown = 1; |
Dave Chinner | e481357 | 2012-11-12 22:54:14 +1100 | [diff] [blame] | 883 | } else { |
| 884 | /* |
| 885 | * Already had space in some data block. |
| 886 | * Just read that one in. |
| 887 | */ |
Darrick J. Wong | cc6740d | 2024-04-15 14:54:40 -0700 | [diff] [blame] | 888 | error = xfs_dir3_data_read(tp, dp, args->owner, |
| 889 | xfs_dir2_db_to_da(args->geo, use_block), 0, |
| 890 | &dbp); |
Dave Chinner | 4bb20a8 | 2012-11-12 22:54:10 +1100 | [diff] [blame] | 891 | if (error) { |
Dave Chinner | 1d9025e | 2012-06-22 18:50:14 +1000 | [diff] [blame] | 892 | xfs_trans_brelse(tp, lbp); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 893 | return error; |
| 894 | } |
Dave Chinner | 1d9025e | 2012-06-22 18:50:14 +1000 | [diff] [blame] | 895 | hdr = dbp->b_addr; |
Christoph Hellwig | 1848b60 | 2019-11-08 15:05:39 -0800 | [diff] [blame] | 896 | bf = xfs_dir2_data_bestfree_p(dp->i_mount, hdr); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 897 | grown = 0; |
| 898 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 899 | /* |
| 900 | * Point to the biggest freespace in our data block. |
| 901 | */ |
| 902 | dup = (xfs_dir2_data_unused_t *) |
Dave Chinner | 33363fe | 2013-04-03 16:11:22 +1100 | [diff] [blame] | 903 | ((char *)hdr + be16_to_cpu(bf[0].offset)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 904 | needscan = needlog = 0; |
| 905 | /* |
| 906 | * Mark the initial part of our freespace in use for the new entry. |
| 907 | */ |
Darrick J. Wong | 6915ef3 | 2018-03-23 10:06:51 -0700 | [diff] [blame] | 908 | error = xfs_dir2_data_use_free(args, dbp, dup, |
| 909 | (xfs_dir2_data_aoff_t)((char *)dup - (char *)hdr), |
| 910 | length, &needlog, &needscan); |
| 911 | if (error) { |
| 912 | xfs_trans_brelse(tp, lbp); |
| 913 | return error; |
| 914 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 915 | /* |
| 916 | * Initialize our new entry (at last). |
| 917 | */ |
| 918 | dep = (xfs_dir2_data_entry_t *)dup; |
Christoph Hellwig | ff9901c | 2006-06-09 14:48:37 +1000 | [diff] [blame] | 919 | dep->inumber = cpu_to_be64(args->inumber); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 920 | dep->namelen = args->namelen; |
| 921 | memcpy(dep->name, args->name, dep->namelen); |
Christoph Hellwig | 59b8b46 | 2019-11-08 15:05:48 -0800 | [diff] [blame] | 922 | xfs_dir2_data_put_ftype(dp->i_mount, dep, args->filetype); |
Christoph Hellwig | 7e8ae7bd | 2019-11-08 15:05:37 -0800 | [diff] [blame] | 923 | tagp = xfs_dir2_data_entry_tag_p(dp->i_mount, dep); |
Christoph Hellwig | c2066e2 | 2011-07-08 14:35:38 +0200 | [diff] [blame] | 924 | *tagp = cpu_to_be16((char *)dep - (char *)hdr); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 925 | /* |
| 926 | * Need to scan fix up the bestfree table. |
| 927 | */ |
| 928 | if (needscan) |
Christoph Hellwig | ae42976 | 2019-11-08 15:06:02 -0800 | [diff] [blame] | 929 | xfs_dir2_data_freescan(dp->i_mount, hdr, &needlog); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 930 | /* |
| 931 | * Need to log the data block's header. |
| 932 | */ |
| 933 | if (needlog) |
Dave Chinner | bc85178 | 2014-06-06 15:20:54 +1000 | [diff] [blame] | 934 | xfs_dir2_data_log_header(args, dbp); |
| 935 | xfs_dir2_data_log_entry(args, dbp, dep); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 936 | /* |
| 937 | * If the bests table needs to be changed, do it. |
| 938 | * Log the change unless we've already done that. |
| 939 | */ |
Dave Chinner | 33363fe | 2013-04-03 16:11:22 +1100 | [diff] [blame] | 940 | if (be16_to_cpu(bestsp[use_block]) != be16_to_cpu(bf[0].length)) { |
| 941 | bestsp[use_block] = bf[0].length; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 942 | if (!grown) |
Dave Chinner | bc85178 | 2014-06-06 15:20:54 +1000 | [diff] [blame] | 943 | xfs_dir3_leaf_log_bests(args, lbp, use_block, use_block); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 944 | } |
Christoph Hellwig | 4fb44c8 | 2011-07-08 14:34:59 +0200 | [diff] [blame] | 945 | |
Dave Chinner | 24df33b | 2013-04-12 07:30:21 +1000 | [diff] [blame] | 946 | lep = xfs_dir3_leaf_find_entry(&leafhdr, ents, index, compact, lowstale, |
Christoph Hellwig | 4fb44c8 | 2011-07-08 14:34:59 +0200 | [diff] [blame] | 947 | highstale, &lfloglow, &lfloghigh); |
| 948 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 949 | /* |
| 950 | * Fill in the new leaf entry. |
| 951 | */ |
Nathan Scott | 3c1f9c1 | 2006-03-17 17:28:18 +1100 | [diff] [blame] | 952 | lep->hashval = cpu_to_be32(args->hashval); |
Dave Chinner | 3002803 | 2014-06-06 15:08:18 +1000 | [diff] [blame] | 953 | lep->address = cpu_to_be32( |
| 954 | xfs_dir2_db_off_to_dataptr(args->geo, use_block, |
Nathan Scott | 3d693c6 | 2006-03-17 17:28:27 +1100 | [diff] [blame] | 955 | be16_to_cpu(*tagp))); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 956 | /* |
| 957 | * Log the leaf fields and give up the buffers. |
| 958 | */ |
Christoph Hellwig | 163fbbb | 2019-11-08 14:57:50 -0800 | [diff] [blame] | 959 | xfs_dir2_leaf_hdr_to_disk(dp->i_mount, leaf, &leafhdr); |
Dave Chinner | bc85178 | 2014-06-06 15:20:54 +1000 | [diff] [blame] | 960 | xfs_dir3_leaf_log_header(args, lbp); |
Christoph Hellwig | 787b089 | 2019-11-08 14:57:50 -0800 | [diff] [blame] | 961 | xfs_dir3_leaf_log_ents(args, &leafhdr, lbp, lfloglow, lfloghigh); |
Dave Chinner | 4141956 | 2013-10-29 22:11:50 +1100 | [diff] [blame] | 962 | xfs_dir3_leaf_check(dp, lbp); |
Dave Chinner | 33363fe | 2013-04-03 16:11:22 +1100 | [diff] [blame] | 963 | xfs_dir3_data_check(dp, dbp); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 964 | return 0; |
| 965 | } |
| 966 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 967 | /* |
| 968 | * Compact out any stale entries in the leaf. |
| 969 | * Log the header and changed leaf entries, if any. |
| 970 | */ |
| 971 | void |
Dave Chinner | 24df33b | 2013-04-12 07:30:21 +1000 | [diff] [blame] | 972 | xfs_dir3_leaf_compact( |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 973 | xfs_da_args_t *args, /* operation arguments */ |
Dave Chinner | 24df33b | 2013-04-12 07:30:21 +1000 | [diff] [blame] | 974 | struct xfs_dir3_icleaf_hdr *leafhdr, |
Dave Chinner | 1d9025e | 2012-06-22 18:50:14 +1000 | [diff] [blame] | 975 | struct xfs_buf *bp) /* leaf buffer */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 976 | { |
| 977 | int from; /* source leaf index */ |
| 978 | xfs_dir2_leaf_t *leaf; /* leaf structure */ |
| 979 | int loglow; /* first leaf entry to log */ |
| 980 | int to; /* target leaf index */ |
Dave Chinner | 01ba43b | 2013-10-29 22:11:52 +1100 | [diff] [blame] | 981 | struct xfs_inode *dp = args->dp; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 982 | |
Dave Chinner | 1d9025e | 2012-06-22 18:50:14 +1000 | [diff] [blame] | 983 | leaf = bp->b_addr; |
Dave Chinner | 24df33b | 2013-04-12 07:30:21 +1000 | [diff] [blame] | 984 | if (!leafhdr->stale) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 985 | return; |
Dave Chinner | 24df33b | 2013-04-12 07:30:21 +1000 | [diff] [blame] | 986 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 987 | /* |
| 988 | * Compress out the stale entries in place. |
| 989 | */ |
Dave Chinner | 24df33b | 2013-04-12 07:30:21 +1000 | [diff] [blame] | 990 | for (from = to = 0, loglow = -1; from < leafhdr->count; from++) { |
Christoph Hellwig | 787b089 | 2019-11-08 14:57:50 -0800 | [diff] [blame] | 991 | if (leafhdr->ents[from].address == |
| 992 | cpu_to_be32(XFS_DIR2_NULL_DATAPTR)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 993 | continue; |
| 994 | /* |
| 995 | * Only actually copy the entries that are different. |
| 996 | */ |
| 997 | if (from > to) { |
| 998 | if (loglow == -1) |
| 999 | loglow = to; |
Christoph Hellwig | 787b089 | 2019-11-08 14:57:50 -0800 | [diff] [blame] | 1000 | leafhdr->ents[to] = leafhdr->ents[from]; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1001 | } |
| 1002 | to++; |
| 1003 | } |
| 1004 | /* |
| 1005 | * Update and log the header, log the leaf entries. |
| 1006 | */ |
Dave Chinner | 24df33b | 2013-04-12 07:30:21 +1000 | [diff] [blame] | 1007 | ASSERT(leafhdr->stale == from - to); |
| 1008 | leafhdr->count -= leafhdr->stale; |
| 1009 | leafhdr->stale = 0; |
| 1010 | |
Christoph Hellwig | 163fbbb | 2019-11-08 14:57:50 -0800 | [diff] [blame] | 1011 | xfs_dir2_leaf_hdr_to_disk(dp->i_mount, leaf, leafhdr); |
Dave Chinner | bc85178 | 2014-06-06 15:20:54 +1000 | [diff] [blame] | 1012 | xfs_dir3_leaf_log_header(args, bp); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1013 | if (loglow != -1) |
Christoph Hellwig | 787b089 | 2019-11-08 14:57:50 -0800 | [diff] [blame] | 1014 | xfs_dir3_leaf_log_ents(args, leafhdr, bp, loglow, to - 1); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1015 | } |
| 1016 | |
| 1017 | /* |
| 1018 | * Compact the leaf entries, removing stale ones. |
| 1019 | * Leave one stale entry behind - the one closest to our |
| 1020 | * insertion index - and the caller will shift that one to our insertion |
| 1021 | * point later. |
| 1022 | * Return new insertion index, where the remaining stale entry is, |
| 1023 | * and leaf logging indices. |
| 1024 | */ |
| 1025 | void |
Dave Chinner | 24df33b | 2013-04-12 07:30:21 +1000 | [diff] [blame] | 1026 | xfs_dir3_leaf_compact_x1( |
| 1027 | struct xfs_dir3_icleaf_hdr *leafhdr, |
| 1028 | struct xfs_dir2_leaf_entry *ents, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1029 | int *indexp, /* insertion index */ |
| 1030 | int *lowstalep, /* out: stale entry before us */ |
| 1031 | int *highstalep, /* out: stale entry after us */ |
| 1032 | int *lowlogp, /* out: low log index */ |
| 1033 | int *highlogp) /* out: high log index */ |
| 1034 | { |
| 1035 | int from; /* source copy index */ |
| 1036 | int highstale; /* stale entry at/after index */ |
| 1037 | int index; /* insertion index */ |
| 1038 | int keepstale; /* source index of kept stale */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1039 | int lowstale; /* stale entry before index */ |
| 1040 | int newindex=0; /* new insertion index */ |
| 1041 | int to; /* destination copy index */ |
| 1042 | |
Dave Chinner | 24df33b | 2013-04-12 07:30:21 +1000 | [diff] [blame] | 1043 | ASSERT(leafhdr->stale > 1); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1044 | index = *indexp; |
Christoph Hellwig | a230a1d | 2011-07-13 13:43:48 +0200 | [diff] [blame] | 1045 | |
Dave Chinner | 24df33b | 2013-04-12 07:30:21 +1000 | [diff] [blame] | 1046 | xfs_dir3_leaf_find_stale(leafhdr, ents, index, &lowstale, &highstale); |
Christoph Hellwig | a230a1d | 2011-07-13 13:43:48 +0200 | [diff] [blame] | 1047 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1048 | /* |
| 1049 | * Pick the better of lowstale and highstale. |
| 1050 | */ |
| 1051 | if (lowstale >= 0 && |
Dave Chinner | 24df33b | 2013-04-12 07:30:21 +1000 | [diff] [blame] | 1052 | (highstale == leafhdr->count || |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1053 | index - lowstale <= highstale - index)) |
| 1054 | keepstale = lowstale; |
| 1055 | else |
| 1056 | keepstale = highstale; |
| 1057 | /* |
| 1058 | * Copy the entries in place, removing all the stale entries |
| 1059 | * except keepstale. |
| 1060 | */ |
Dave Chinner | 24df33b | 2013-04-12 07:30:21 +1000 | [diff] [blame] | 1061 | for (from = to = 0; from < leafhdr->count; from++) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1062 | /* |
| 1063 | * Notice the new value of index. |
| 1064 | */ |
| 1065 | if (index == from) |
| 1066 | newindex = to; |
| 1067 | if (from != keepstale && |
Dave Chinner | 24df33b | 2013-04-12 07:30:21 +1000 | [diff] [blame] | 1068 | ents[from].address == cpu_to_be32(XFS_DIR2_NULL_DATAPTR)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1069 | if (from == to) |
| 1070 | *lowlogp = to; |
| 1071 | continue; |
| 1072 | } |
| 1073 | /* |
| 1074 | * Record the new keepstale value for the insertion. |
| 1075 | */ |
| 1076 | if (from == keepstale) |
| 1077 | lowstale = highstale = to; |
| 1078 | /* |
| 1079 | * Copy only the entries that have moved. |
| 1080 | */ |
| 1081 | if (from > to) |
Dave Chinner | 24df33b | 2013-04-12 07:30:21 +1000 | [diff] [blame] | 1082 | ents[to] = ents[from]; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1083 | to++; |
| 1084 | } |
| 1085 | ASSERT(from > to); |
| 1086 | /* |
| 1087 | * If the insertion point was past the last entry, |
| 1088 | * set the new insertion point accordingly. |
| 1089 | */ |
| 1090 | if (index == from) |
| 1091 | newindex = to; |
| 1092 | *indexp = newindex; |
| 1093 | /* |
| 1094 | * Adjust the leaf header values. |
| 1095 | */ |
Dave Chinner | 24df33b | 2013-04-12 07:30:21 +1000 | [diff] [blame] | 1096 | leafhdr->count -= from - to; |
| 1097 | leafhdr->stale = 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1098 | /* |
| 1099 | * Remember the low/high stale value only in the "right" |
| 1100 | * direction. |
| 1101 | */ |
| 1102 | if (lowstale >= newindex) |
| 1103 | lowstale = -1; |
| 1104 | else |
Dave Chinner | 24df33b | 2013-04-12 07:30:21 +1000 | [diff] [blame] | 1105 | highstale = leafhdr->count; |
| 1106 | *highlogp = leafhdr->count - 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1107 | *lowstalep = lowstale; |
| 1108 | *highstalep = highstale; |
| 1109 | } |
| 1110 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1111 | /* |
| 1112 | * Log the bests entries indicated from a leaf1 block. |
| 1113 | */ |
Christoph Hellwig | ba0f32d | 2005-06-21 15:36:52 +1000 | [diff] [blame] | 1114 | static void |
Dave Chinner | 24df33b | 2013-04-12 07:30:21 +1000 | [diff] [blame] | 1115 | xfs_dir3_leaf_log_bests( |
Dave Chinner | bc85178 | 2014-06-06 15:20:54 +1000 | [diff] [blame] | 1116 | struct xfs_da_args *args, |
Dave Chinner | 1d9025e | 2012-06-22 18:50:14 +1000 | [diff] [blame] | 1117 | struct xfs_buf *bp, /* leaf buffer */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1118 | int first, /* first entry to log */ |
| 1119 | int last) /* last entry to log */ |
| 1120 | { |
Nathan Scott | 68b3a10 | 2006-03-17 17:27:19 +1100 | [diff] [blame] | 1121 | __be16 *firstb; /* pointer to first entry */ |
| 1122 | __be16 *lastb; /* pointer to last entry */ |
Dave Chinner | 24df33b | 2013-04-12 07:30:21 +1000 | [diff] [blame] | 1123 | struct xfs_dir2_leaf *leaf = bp->b_addr; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1124 | xfs_dir2_leaf_tail_t *ltp; /* leaf tail structure */ |
| 1125 | |
Dave Chinner | 24df33b | 2013-04-12 07:30:21 +1000 | [diff] [blame] | 1126 | ASSERT(leaf->hdr.info.magic == cpu_to_be16(XFS_DIR2_LEAF1_MAGIC) || |
| 1127 | leaf->hdr.info.magic == cpu_to_be16(XFS_DIR3_LEAF1_MAGIC)); |
| 1128 | |
Dave Chinner | bc85178 | 2014-06-06 15:20:54 +1000 | [diff] [blame] | 1129 | ltp = xfs_dir2_leaf_tail_p(args->geo, leaf); |
Christoph Hellwig | bbaaf53 | 2007-06-28 16:43:50 +1000 | [diff] [blame] | 1130 | firstb = xfs_dir2_leaf_bests_p(ltp) + first; |
| 1131 | lastb = xfs_dir2_leaf_bests_p(ltp) + last; |
Dave Chinner | bc85178 | 2014-06-06 15:20:54 +1000 | [diff] [blame] | 1132 | xfs_trans_log_buf(args->trans, bp, |
| 1133 | (uint)((char *)firstb - (char *)leaf), |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1134 | (uint)((char *)lastb - (char *)leaf + sizeof(*lastb) - 1)); |
| 1135 | } |
| 1136 | |
| 1137 | /* |
| 1138 | * Log the leaf entries indicated from a leaf1 or leafn block. |
| 1139 | */ |
| 1140 | void |
Dave Chinner | 24df33b | 2013-04-12 07:30:21 +1000 | [diff] [blame] | 1141 | xfs_dir3_leaf_log_ents( |
Dave Chinner | bc85178 | 2014-06-06 15:20:54 +1000 | [diff] [blame] | 1142 | struct xfs_da_args *args, |
Christoph Hellwig | 787b089 | 2019-11-08 14:57:50 -0800 | [diff] [blame] | 1143 | struct xfs_dir3_icleaf_hdr *hdr, |
Dave Chinner | 4141956 | 2013-10-29 22:11:50 +1100 | [diff] [blame] | 1144 | struct xfs_buf *bp, |
| 1145 | int first, |
| 1146 | int last) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1147 | { |
| 1148 | xfs_dir2_leaf_entry_t *firstlep; /* pointer to first entry */ |
| 1149 | xfs_dir2_leaf_entry_t *lastlep; /* pointer to last entry */ |
Dave Chinner | 24df33b | 2013-04-12 07:30:21 +1000 | [diff] [blame] | 1150 | struct xfs_dir2_leaf *leaf = bp->b_addr; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1151 | |
Christoph Hellwig | 69ef921 | 2011-07-08 14:36:05 +0200 | [diff] [blame] | 1152 | ASSERT(leaf->hdr.info.magic == cpu_to_be16(XFS_DIR2_LEAF1_MAGIC) || |
Dave Chinner | 24df33b | 2013-04-12 07:30:21 +1000 | [diff] [blame] | 1153 | leaf->hdr.info.magic == cpu_to_be16(XFS_DIR3_LEAF1_MAGIC) || |
| 1154 | leaf->hdr.info.magic == cpu_to_be16(XFS_DIR2_LEAFN_MAGIC) || |
| 1155 | leaf->hdr.info.magic == cpu_to_be16(XFS_DIR3_LEAFN_MAGIC)); |
| 1156 | |
Christoph Hellwig | 787b089 | 2019-11-08 14:57:50 -0800 | [diff] [blame] | 1157 | firstlep = &hdr->ents[first]; |
| 1158 | lastlep = &hdr->ents[last]; |
Dave Chinner | bc85178 | 2014-06-06 15:20:54 +1000 | [diff] [blame] | 1159 | xfs_trans_log_buf(args->trans, bp, |
| 1160 | (uint)((char *)firstlep - (char *)leaf), |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1161 | (uint)((char *)lastlep - (char *)leaf + sizeof(*lastlep) - 1)); |
| 1162 | } |
| 1163 | |
| 1164 | /* |
| 1165 | * Log the header of the leaf1 or leafn block. |
| 1166 | */ |
| 1167 | void |
Dave Chinner | 24df33b | 2013-04-12 07:30:21 +1000 | [diff] [blame] | 1168 | xfs_dir3_leaf_log_header( |
Dave Chinner | bc85178 | 2014-06-06 15:20:54 +1000 | [diff] [blame] | 1169 | struct xfs_da_args *args, |
Dave Chinner | 1d9025e | 2012-06-22 18:50:14 +1000 | [diff] [blame] | 1170 | struct xfs_buf *bp) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1171 | { |
Dave Chinner | 24df33b | 2013-04-12 07:30:21 +1000 | [diff] [blame] | 1172 | struct xfs_dir2_leaf *leaf = bp->b_addr; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1173 | |
Christoph Hellwig | 69ef921 | 2011-07-08 14:36:05 +0200 | [diff] [blame] | 1174 | ASSERT(leaf->hdr.info.magic == cpu_to_be16(XFS_DIR2_LEAF1_MAGIC) || |
Dave Chinner | 24df33b | 2013-04-12 07:30:21 +1000 | [diff] [blame] | 1175 | leaf->hdr.info.magic == cpu_to_be16(XFS_DIR3_LEAF1_MAGIC) || |
| 1176 | leaf->hdr.info.magic == cpu_to_be16(XFS_DIR2_LEAFN_MAGIC) || |
| 1177 | leaf->hdr.info.magic == cpu_to_be16(XFS_DIR3_LEAFN_MAGIC)); |
| 1178 | |
Dave Chinner | bc85178 | 2014-06-06 15:20:54 +1000 | [diff] [blame] | 1179 | xfs_trans_log_buf(args->trans, bp, |
| 1180 | (uint)((char *)&leaf->hdr - (char *)leaf), |
Christoph Hellwig | 545910b | 2019-11-08 14:57:51 -0800 | [diff] [blame] | 1181 | args->geo->leaf_hdr_size - 1); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1182 | } |
| 1183 | |
| 1184 | /* |
| 1185 | * Log the tail of the leaf1 block. |
| 1186 | */ |
Christoph Hellwig | ba0f32d | 2005-06-21 15:36:52 +1000 | [diff] [blame] | 1187 | STATIC void |
Dave Chinner | 24df33b | 2013-04-12 07:30:21 +1000 | [diff] [blame] | 1188 | xfs_dir3_leaf_log_tail( |
Dave Chinner | bc85178 | 2014-06-06 15:20:54 +1000 | [diff] [blame] | 1189 | struct xfs_da_args *args, |
Dave Chinner | 1d9025e | 2012-06-22 18:50:14 +1000 | [diff] [blame] | 1190 | struct xfs_buf *bp) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1191 | { |
Dave Chinner | 24df33b | 2013-04-12 07:30:21 +1000 | [diff] [blame] | 1192 | struct xfs_dir2_leaf *leaf = bp->b_addr; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1193 | xfs_dir2_leaf_tail_t *ltp; /* leaf tail structure */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1194 | |
Dave Chinner | 24df33b | 2013-04-12 07:30:21 +1000 | [diff] [blame] | 1195 | ASSERT(leaf->hdr.info.magic == cpu_to_be16(XFS_DIR2_LEAF1_MAGIC) || |
| 1196 | leaf->hdr.info.magic == cpu_to_be16(XFS_DIR3_LEAF1_MAGIC) || |
| 1197 | leaf->hdr.info.magic == cpu_to_be16(XFS_DIR2_LEAFN_MAGIC) || |
| 1198 | leaf->hdr.info.magic == cpu_to_be16(XFS_DIR3_LEAFN_MAGIC)); |
| 1199 | |
Dave Chinner | bc85178 | 2014-06-06 15:20:54 +1000 | [diff] [blame] | 1200 | ltp = xfs_dir2_leaf_tail_p(args->geo, leaf); |
| 1201 | xfs_trans_log_buf(args->trans, bp, (uint)((char *)ltp - (char *)leaf), |
| 1202 | (uint)(args->geo->blksize - 1)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1203 | } |
| 1204 | |
| 1205 | /* |
| 1206 | * Look up the entry referred to by args in the leaf format directory. |
| 1207 | * Most of the work is done by the xfs_dir2_leaf_lookup_int routine which |
| 1208 | * is also used by the node-format code. |
| 1209 | */ |
| 1210 | int |
| 1211 | xfs_dir2_leaf_lookup( |
| 1212 | xfs_da_args_t *args) /* operation arguments */ |
| 1213 | { |
Dave Chinner | 1d9025e | 2012-06-22 18:50:14 +1000 | [diff] [blame] | 1214 | struct xfs_buf *dbp; /* data block buffer */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1215 | xfs_dir2_data_entry_t *dep; /* data block entry */ |
| 1216 | xfs_inode_t *dp; /* incore directory inode */ |
| 1217 | int error; /* error return code */ |
| 1218 | int index; /* found entry index */ |
Dave Chinner | 1d9025e | 2012-06-22 18:50:14 +1000 | [diff] [blame] | 1219 | struct xfs_buf *lbp; /* leaf buffer */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1220 | xfs_dir2_leaf_entry_t *lep; /* leaf entry */ |
| 1221 | xfs_trans_t *tp; /* transaction pointer */ |
Christoph Hellwig | 787b089 | 2019-11-08 14:57:50 -0800 | [diff] [blame] | 1222 | struct xfs_dir3_icleaf_hdr leafhdr; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1223 | |
Christoph Hellwig | 0b1b213 | 2009-12-14 23:14:59 +0000 | [diff] [blame] | 1224 | trace_xfs_dir2_leaf_lookup(args); |
| 1225 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1226 | /* |
| 1227 | * Look up name in the leaf block, returning both buffers and index. |
| 1228 | */ |
Christoph Hellwig | 787b089 | 2019-11-08 14:57:50 -0800 | [diff] [blame] | 1229 | error = xfs_dir2_leaf_lookup_int(args, &lbp, &index, &dbp, &leafhdr); |
| 1230 | if (error) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1231 | return error; |
Christoph Hellwig | 787b089 | 2019-11-08 14:57:50 -0800 | [diff] [blame] | 1232 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1233 | tp = args->trans; |
| 1234 | dp = args->dp; |
Dave Chinner | 4141956 | 2013-10-29 22:11:50 +1100 | [diff] [blame] | 1235 | xfs_dir3_leaf_check(dp, lbp); |
Christoph Hellwig | 787b089 | 2019-11-08 14:57:50 -0800 | [diff] [blame] | 1236 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1237 | /* |
| 1238 | * Get to the leaf entry and contained data entry address. |
| 1239 | */ |
Christoph Hellwig | 787b089 | 2019-11-08 14:57:50 -0800 | [diff] [blame] | 1240 | lep = &leafhdr.ents[index]; |
Dave Chinner | 24df33b | 2013-04-12 07:30:21 +1000 | [diff] [blame] | 1241 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1242 | /* |
| 1243 | * Point to the data entry. |
| 1244 | */ |
| 1245 | dep = (xfs_dir2_data_entry_t *) |
Dave Chinner | 1d9025e | 2012-06-22 18:50:14 +1000 | [diff] [blame] | 1246 | ((char *)dbp->b_addr + |
Dave Chinner | 3002803 | 2014-06-06 15:08:18 +1000 | [diff] [blame] | 1247 | xfs_dir2_dataptr_to_off(args->geo, be32_to_cpu(lep->address))); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1248 | /* |
Barry Naujok | 384f3ce | 2008-05-21 16:58:22 +1000 | [diff] [blame] | 1249 | * Return the found inode number & CI name if appropriate |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1250 | */ |
Christoph Hellwig | ff9901c | 2006-06-09 14:48:37 +1000 | [diff] [blame] | 1251 | args->inumber = be64_to_cpu(dep->inumber); |
Christoph Hellwig | 59b8b46 | 2019-11-08 15:05:48 -0800 | [diff] [blame] | 1252 | args->filetype = xfs_dir2_data_get_ftype(dp->i_mount, dep); |
Barry Naujok | 384f3ce | 2008-05-21 16:58:22 +1000 | [diff] [blame] | 1253 | error = xfs_dir_cilookup_result(args, dep->name, dep->namelen); |
Dave Chinner | 1d9025e | 2012-06-22 18:50:14 +1000 | [diff] [blame] | 1254 | xfs_trans_brelse(tp, dbp); |
| 1255 | xfs_trans_brelse(tp, lbp); |
Eric Sandeen | b474c7a | 2014-06-22 15:04:54 +1000 | [diff] [blame] | 1256 | return error; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1257 | } |
| 1258 | |
| 1259 | /* |
| 1260 | * Look up name/hash in the leaf block. |
| 1261 | * Fill in indexp with the found index, and dbpp with the data buffer. |
| 1262 | * If not found dbpp will be NULL, and ENOENT comes back. |
| 1263 | * lbpp will always be filled in with the leaf buffer unless there's an error. |
| 1264 | */ |
| 1265 | static int /* error */ |
| 1266 | xfs_dir2_leaf_lookup_int( |
| 1267 | xfs_da_args_t *args, /* operation arguments */ |
Dave Chinner | 1d9025e | 2012-06-22 18:50:14 +1000 | [diff] [blame] | 1268 | struct xfs_buf **lbpp, /* out: leaf buffer */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1269 | int *indexp, /* out: index in leaf block */ |
Christoph Hellwig | 787b089 | 2019-11-08 14:57:50 -0800 | [diff] [blame] | 1270 | struct xfs_buf **dbpp, /* out: data buffer */ |
| 1271 | struct xfs_dir3_icleaf_hdr *leafhdr) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1272 | { |
Barry Naujok | 07fe4dd | 2008-06-27 13:32:11 +1000 | [diff] [blame] | 1273 | xfs_dir2_db_t curdb = -1; /* current data block number */ |
Dave Chinner | 1d9025e | 2012-06-22 18:50:14 +1000 | [diff] [blame] | 1274 | struct xfs_buf *dbp = NULL; /* data buffer */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1275 | xfs_dir2_data_entry_t *dep; /* data entry */ |
| 1276 | xfs_inode_t *dp; /* incore directory inode */ |
| 1277 | int error; /* error return code */ |
| 1278 | int index; /* index in leaf block */ |
Dave Chinner | 1d9025e | 2012-06-22 18:50:14 +1000 | [diff] [blame] | 1279 | struct xfs_buf *lbp; /* leaf buffer */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1280 | xfs_dir2_leaf_entry_t *lep; /* leaf entry */ |
| 1281 | xfs_dir2_leaf_t *leaf; /* leaf structure */ |
| 1282 | xfs_mount_t *mp; /* filesystem mount point */ |
| 1283 | xfs_dir2_db_t newdb; /* new data block number */ |
| 1284 | xfs_trans_t *tp; /* transaction pointer */ |
Barry Naujok | 07fe4dd | 2008-06-27 13:32:11 +1000 | [diff] [blame] | 1285 | xfs_dir2_db_t cidb = -1; /* case match data block no. */ |
Barry Naujok | 5163f95 | 2008-05-21 16:41:01 +1000 | [diff] [blame] | 1286 | enum xfs_dacmp cmp; /* name compare result */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1287 | |
| 1288 | dp = args->dp; |
| 1289 | tp = args->trans; |
| 1290 | mp = dp->i_mount; |
Dave Chinner | e6f7667 | 2012-11-12 22:54:15 +1100 | [diff] [blame] | 1291 | |
Darrick J. Wong | 402eef1 | 2024-04-15 14:54:39 -0700 | [diff] [blame] | 1292 | error = xfs_dir3_leaf_read(tp, dp, args->owner, args->geo->leafblk, |
| 1293 | &lbp); |
Barry Naujok | 07fe4dd | 2008-06-27 13:32:11 +1000 | [diff] [blame] | 1294 | if (error) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1295 | return error; |
Dave Chinner | e6f7667 | 2012-11-12 22:54:15 +1100 | [diff] [blame] | 1296 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1297 | *lbpp = lbp; |
Dave Chinner | 1d9025e | 2012-06-22 18:50:14 +1000 | [diff] [blame] | 1298 | leaf = lbp->b_addr; |
Dave Chinner | 4141956 | 2013-10-29 22:11:50 +1100 | [diff] [blame] | 1299 | xfs_dir3_leaf_check(dp, lbp); |
Christoph Hellwig | 787b089 | 2019-11-08 14:57:50 -0800 | [diff] [blame] | 1300 | xfs_dir2_leaf_hdr_from_disk(mp, leafhdr, leaf); |
Dave Chinner | 24df33b | 2013-04-12 07:30:21 +1000 | [diff] [blame] | 1301 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1302 | /* |
| 1303 | * Look for the first leaf entry with our hash value. |
| 1304 | */ |
| 1305 | index = xfs_dir2_leaf_search_hash(args, lbp); |
| 1306 | /* |
| 1307 | * Loop over all the entries with the right hash value |
| 1308 | * looking to match the name. |
| 1309 | */ |
Christoph Hellwig | 787b089 | 2019-11-08 14:57:50 -0800 | [diff] [blame] | 1310 | for (lep = &leafhdr->ents[index]; |
| 1311 | index < leafhdr->count && |
| 1312 | be32_to_cpu(lep->hashval) == args->hashval; |
Dave Chinner | 24df33b | 2013-04-12 07:30:21 +1000 | [diff] [blame] | 1313 | lep++, index++) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1314 | /* |
| 1315 | * Skip over stale leaf entries. |
| 1316 | */ |
Nathan Scott | 3c1f9c1 | 2006-03-17 17:28:18 +1100 | [diff] [blame] | 1317 | if (be32_to_cpu(lep->address) == XFS_DIR2_NULL_DATAPTR) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1318 | continue; |
| 1319 | /* |
| 1320 | * Get the new data block number. |
| 1321 | */ |
Dave Chinner | 3002803 | 2014-06-06 15:08:18 +1000 | [diff] [blame] | 1322 | newdb = xfs_dir2_dataptr_to_db(args->geo, |
| 1323 | be32_to_cpu(lep->address)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1324 | /* |
| 1325 | * If it's not the same as the old data block number, |
| 1326 | * need to pitch the old one and read the new one. |
| 1327 | */ |
| 1328 | if (newdb != curdb) { |
Barry Naujok | 07fe4dd | 2008-06-27 13:32:11 +1000 | [diff] [blame] | 1329 | if (dbp) |
Dave Chinner | 1d9025e | 2012-06-22 18:50:14 +1000 | [diff] [blame] | 1330 | xfs_trans_brelse(tp, dbp); |
Darrick J. Wong | cc6740d | 2024-04-15 14:54:40 -0700 | [diff] [blame] | 1331 | error = xfs_dir3_data_read(tp, dp, args->owner, |
| 1332 | xfs_dir2_db_to_da(args->geo, newdb), 0, |
| 1333 | &dbp); |
Barry Naujok | 5163f95 | 2008-05-21 16:41:01 +1000 | [diff] [blame] | 1334 | if (error) { |
Dave Chinner | 1d9025e | 2012-06-22 18:50:14 +1000 | [diff] [blame] | 1335 | xfs_trans_brelse(tp, lbp); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1336 | return error; |
| 1337 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1338 | curdb = newdb; |
| 1339 | } |
| 1340 | /* |
| 1341 | * Point to the data entry. |
| 1342 | */ |
Dave Chinner | 1d9025e | 2012-06-22 18:50:14 +1000 | [diff] [blame] | 1343 | dep = (xfs_dir2_data_entry_t *)((char *)dbp->b_addr + |
Dave Chinner | 3002803 | 2014-06-06 15:08:18 +1000 | [diff] [blame] | 1344 | xfs_dir2_dataptr_to_off(args->geo, |
| 1345 | be32_to_cpu(lep->address))); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1346 | /* |
Barry Naujok | 5163f95 | 2008-05-21 16:41:01 +1000 | [diff] [blame] | 1347 | * Compare name and if it's an exact match, return the index |
| 1348 | * and buffer. If it's the first case-insensitive match, store |
| 1349 | * the index and buffer and continue looking for an exact match. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1350 | */ |
Christoph Hellwig | d8d11fc | 2019-11-11 12:59:26 -0800 | [diff] [blame] | 1351 | cmp = xfs_dir2_compname(args, dep->name, dep->namelen); |
Barry Naujok | 5163f95 | 2008-05-21 16:41:01 +1000 | [diff] [blame] | 1352 | if (cmp != XFS_CMP_DIFFERENT && cmp != args->cmpresult) { |
| 1353 | args->cmpresult = cmp; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1354 | *indexp = index; |
Barry Naujok | 07fe4dd | 2008-06-27 13:32:11 +1000 | [diff] [blame] | 1355 | /* case exact match: return the current buffer. */ |
Barry Naujok | 5163f95 | 2008-05-21 16:41:01 +1000 | [diff] [blame] | 1356 | if (cmp == XFS_CMP_EXACT) { |
Barry Naujok | 5163f95 | 2008-05-21 16:41:01 +1000 | [diff] [blame] | 1357 | *dbpp = dbp; |
| 1358 | return 0; |
| 1359 | } |
Barry Naujok | 07fe4dd | 2008-06-27 13:32:11 +1000 | [diff] [blame] | 1360 | cidb = curdb; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1361 | } |
| 1362 | } |
Barry Naujok | 6a17810 | 2008-05-21 16:42:05 +1000 | [diff] [blame] | 1363 | ASSERT(args->op_flags & XFS_DA_OP_OKNOENT); |
Barry Naujok | 5163f95 | 2008-05-21 16:41:01 +1000 | [diff] [blame] | 1364 | /* |
Barry Naujok | 07fe4dd | 2008-06-27 13:32:11 +1000 | [diff] [blame] | 1365 | * Here, we can only be doing a lookup (not a rename or remove). |
| 1366 | * If a case-insensitive match was found earlier, re-read the |
| 1367 | * appropriate data block if required and return it. |
Barry Naujok | 5163f95 | 2008-05-21 16:41:01 +1000 | [diff] [blame] | 1368 | */ |
| 1369 | if (args->cmpresult == XFS_CMP_CASE) { |
Barry Naujok | 07fe4dd | 2008-06-27 13:32:11 +1000 | [diff] [blame] | 1370 | ASSERT(cidb != -1); |
| 1371 | if (cidb != curdb) { |
Dave Chinner | 1d9025e | 2012-06-22 18:50:14 +1000 | [diff] [blame] | 1372 | xfs_trans_brelse(tp, dbp); |
Darrick J. Wong | cc6740d | 2024-04-15 14:54:40 -0700 | [diff] [blame] | 1373 | error = xfs_dir3_data_read(tp, dp, args->owner, |
| 1374 | xfs_dir2_db_to_da(args->geo, cidb), 0, |
| 1375 | &dbp); |
Barry Naujok | 07fe4dd | 2008-06-27 13:32:11 +1000 | [diff] [blame] | 1376 | if (error) { |
Dave Chinner | 1d9025e | 2012-06-22 18:50:14 +1000 | [diff] [blame] | 1377 | xfs_trans_brelse(tp, lbp); |
Barry Naujok | 07fe4dd | 2008-06-27 13:32:11 +1000 | [diff] [blame] | 1378 | return error; |
| 1379 | } |
| 1380 | } |
| 1381 | *dbpp = dbp; |
Barry Naujok | 5163f95 | 2008-05-21 16:41:01 +1000 | [diff] [blame] | 1382 | return 0; |
| 1383 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1384 | /* |
Dave Chinner | 2451337 | 2014-06-25 14:58:08 +1000 | [diff] [blame] | 1385 | * No match found, return -ENOENT. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1386 | */ |
Barry Naujok | 07fe4dd | 2008-06-27 13:32:11 +1000 | [diff] [blame] | 1387 | ASSERT(cidb == -1); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1388 | if (dbp) |
Dave Chinner | 1d9025e | 2012-06-22 18:50:14 +1000 | [diff] [blame] | 1389 | xfs_trans_brelse(tp, dbp); |
| 1390 | xfs_trans_brelse(tp, lbp); |
Dave Chinner | 2451337 | 2014-06-25 14:58:08 +1000 | [diff] [blame] | 1391 | return -ENOENT; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1392 | } |
| 1393 | |
| 1394 | /* |
| 1395 | * Remove an entry from a leaf format directory. |
| 1396 | */ |
| 1397 | int /* error */ |
| 1398 | xfs_dir2_leaf_removename( |
| 1399 | xfs_da_args_t *args) /* operation arguments */ |
| 1400 | { |
Christoph Hellwig | d73e1ce | 2019-11-08 15:05:38 -0800 | [diff] [blame] | 1401 | struct xfs_da_geometry *geo = args->geo; |
Nathan Scott | 68b3a10 | 2006-03-17 17:27:19 +1100 | [diff] [blame] | 1402 | __be16 *bestsp; /* leaf block best freespace */ |
Christoph Hellwig | c2066e2 | 2011-07-08 14:35:38 +0200 | [diff] [blame] | 1403 | xfs_dir2_data_hdr_t *hdr; /* data block header */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1404 | xfs_dir2_db_t db; /* data block number */ |
Dave Chinner | 1d9025e | 2012-06-22 18:50:14 +1000 | [diff] [blame] | 1405 | struct xfs_buf *dbp; /* data block buffer */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1406 | xfs_dir2_data_entry_t *dep; /* data entry structure */ |
| 1407 | xfs_inode_t *dp; /* incore directory inode */ |
| 1408 | int error; /* error return code */ |
| 1409 | xfs_dir2_db_t i; /* temporary data block # */ |
| 1410 | int index; /* index into leaf entries */ |
Dave Chinner | 1d9025e | 2012-06-22 18:50:14 +1000 | [diff] [blame] | 1411 | struct xfs_buf *lbp; /* leaf buffer */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1412 | xfs_dir2_leaf_t *leaf; /* leaf structure */ |
| 1413 | xfs_dir2_leaf_entry_t *lep; /* leaf entry */ |
| 1414 | xfs_dir2_leaf_tail_t *ltp; /* leaf tail structure */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1415 | int needlog; /* need to log data header */ |
| 1416 | int needscan; /* need to rescan data frees */ |
| 1417 | xfs_dir2_data_off_t oldbest; /* old value of best free */ |
Dave Chinner | 33363fe | 2013-04-03 16:11:22 +1100 | [diff] [blame] | 1418 | struct xfs_dir2_data_free *bf; /* bestfree table */ |
Dave Chinner | 24df33b | 2013-04-12 07:30:21 +1000 | [diff] [blame] | 1419 | struct xfs_dir3_icleaf_hdr leafhdr; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1420 | |
Christoph Hellwig | 0b1b213 | 2009-12-14 23:14:59 +0000 | [diff] [blame] | 1421 | trace_xfs_dir2_leaf_removename(args); |
| 1422 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1423 | /* |
| 1424 | * Lookup the leaf entry, get the leaf and data blocks read in. |
| 1425 | */ |
Christoph Hellwig | 787b089 | 2019-11-08 14:57:50 -0800 | [diff] [blame] | 1426 | error = xfs_dir2_leaf_lookup_int(args, &lbp, &index, &dbp, &leafhdr); |
| 1427 | if (error) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1428 | return error; |
Christoph Hellwig | 787b089 | 2019-11-08 14:57:50 -0800 | [diff] [blame] | 1429 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1430 | dp = args->dp; |
Dave Chinner | 1d9025e | 2012-06-22 18:50:14 +1000 | [diff] [blame] | 1431 | leaf = lbp->b_addr; |
| 1432 | hdr = dbp->b_addr; |
Dave Chinner | 33363fe | 2013-04-03 16:11:22 +1100 | [diff] [blame] | 1433 | xfs_dir3_data_check(dp, dbp); |
Christoph Hellwig | 1848b60 | 2019-11-08 15:05:39 -0800 | [diff] [blame] | 1434 | bf = xfs_dir2_data_bestfree_p(dp->i_mount, hdr); |
Christoph Hellwig | 787b089 | 2019-11-08 14:57:50 -0800 | [diff] [blame] | 1435 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1436 | /* |
| 1437 | * Point to the leaf entry, use that to point to the data entry. |
| 1438 | */ |
Christoph Hellwig | 787b089 | 2019-11-08 14:57:50 -0800 | [diff] [blame] | 1439 | lep = &leafhdr.ents[index]; |
Christoph Hellwig | d73e1ce | 2019-11-08 15:05:38 -0800 | [diff] [blame] | 1440 | db = xfs_dir2_dataptr_to_db(geo, be32_to_cpu(lep->address)); |
Dave Chinner | 3002803 | 2014-06-06 15:08:18 +1000 | [diff] [blame] | 1441 | dep = (xfs_dir2_data_entry_t *)((char *)hdr + |
Christoph Hellwig | d73e1ce | 2019-11-08 15:05:38 -0800 | [diff] [blame] | 1442 | xfs_dir2_dataptr_to_off(geo, be32_to_cpu(lep->address))); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1443 | needscan = needlog = 0; |
Dave Chinner | 33363fe | 2013-04-03 16:11:22 +1100 | [diff] [blame] | 1444 | oldbest = be16_to_cpu(bf[0].length); |
Christoph Hellwig | d73e1ce | 2019-11-08 15:05:38 -0800 | [diff] [blame] | 1445 | ltp = xfs_dir2_leaf_tail_p(geo, leaf); |
Christoph Hellwig | bbaaf53 | 2007-06-28 16:43:50 +1000 | [diff] [blame] | 1446 | bestsp = xfs_dir2_leaf_bests_p(ltp); |
Darrick J. Wong | a5155b8 | 2019-11-02 09:40:53 -0700 | [diff] [blame] | 1447 | if (be16_to_cpu(bestsp[db]) != oldbest) { |
Darrick J. Wong | 8d57c21 | 2020-03-11 10:37:54 -0700 | [diff] [blame] | 1448 | xfs_buf_mark_corrupt(lbp); |
Darrick J. Wong | ca14c09 | 2024-02-22 12:32:18 -0800 | [diff] [blame] | 1449 | xfs_da_mark_sick(args); |
Darrick J. Wong | 3f883f5 | 2018-03-06 17:08:31 -0800 | [diff] [blame] | 1450 | return -EFSCORRUPTED; |
Darrick J. Wong | a5155b8 | 2019-11-02 09:40:53 -0700 | [diff] [blame] | 1451 | } |
Darrick J. Wong | ca14c09 | 2024-02-22 12:32:18 -0800 | [diff] [blame] | 1452 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1453 | /* |
| 1454 | * Mark the former data entry unused. |
| 1455 | */ |
Dave Chinner | bc85178 | 2014-06-06 15:20:54 +1000 | [diff] [blame] | 1456 | xfs_dir2_data_make_free(args, dbp, |
Christoph Hellwig | c2066e2 | 2011-07-08 14:35:38 +0200 | [diff] [blame] | 1457 | (xfs_dir2_data_aoff_t)((char *)dep - (char *)hdr), |
Christoph Hellwig | fdbb8c5 | 2019-11-08 15:05:37 -0800 | [diff] [blame] | 1458 | xfs_dir2_data_entsize(dp->i_mount, dep->namelen), &needlog, |
| 1459 | &needscan); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1460 | /* |
| 1461 | * We just mark the leaf entry stale by putting a null in it. |
| 1462 | */ |
Dave Chinner | 24df33b | 2013-04-12 07:30:21 +1000 | [diff] [blame] | 1463 | leafhdr.stale++; |
Christoph Hellwig | 163fbbb | 2019-11-08 14:57:50 -0800 | [diff] [blame] | 1464 | xfs_dir2_leaf_hdr_to_disk(dp->i_mount, leaf, &leafhdr); |
Dave Chinner | bc85178 | 2014-06-06 15:20:54 +1000 | [diff] [blame] | 1465 | xfs_dir3_leaf_log_header(args, lbp); |
Dave Chinner | 24df33b | 2013-04-12 07:30:21 +1000 | [diff] [blame] | 1466 | |
Nathan Scott | 3c1f9c1 | 2006-03-17 17:28:18 +1100 | [diff] [blame] | 1467 | lep->address = cpu_to_be32(XFS_DIR2_NULL_DATAPTR); |
Christoph Hellwig | 787b089 | 2019-11-08 14:57:50 -0800 | [diff] [blame] | 1468 | xfs_dir3_leaf_log_ents(args, &leafhdr, lbp, index, index); |
Dave Chinner | 24df33b | 2013-04-12 07:30:21 +1000 | [diff] [blame] | 1469 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1470 | /* |
| 1471 | * Scan the freespace in the data block again if necessary, |
| 1472 | * log the data block header if necessary. |
| 1473 | */ |
| 1474 | if (needscan) |
Christoph Hellwig | ae42976 | 2019-11-08 15:06:02 -0800 | [diff] [blame] | 1475 | xfs_dir2_data_freescan(dp->i_mount, hdr, &needlog); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1476 | if (needlog) |
Dave Chinner | bc85178 | 2014-06-06 15:20:54 +1000 | [diff] [blame] | 1477 | xfs_dir2_data_log_header(args, dbp); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1478 | /* |
| 1479 | * If the longest freespace in the data block has changed, |
| 1480 | * put the new value in the bests table and log that. |
| 1481 | */ |
Dave Chinner | 33363fe | 2013-04-03 16:11:22 +1100 | [diff] [blame] | 1482 | if (be16_to_cpu(bf[0].length) != oldbest) { |
| 1483 | bestsp[db] = bf[0].length; |
Dave Chinner | bc85178 | 2014-06-06 15:20:54 +1000 | [diff] [blame] | 1484 | xfs_dir3_leaf_log_bests(args, lbp, db, db); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1485 | } |
Dave Chinner | 33363fe | 2013-04-03 16:11:22 +1100 | [diff] [blame] | 1486 | xfs_dir3_data_check(dp, dbp); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1487 | /* |
| 1488 | * If the data block is now empty then get rid of the data block. |
| 1489 | */ |
Dave Chinner | 33363fe | 2013-04-03 16:11:22 +1100 | [diff] [blame] | 1490 | if (be16_to_cpu(bf[0].length) == |
Christoph Hellwig | d73e1ce | 2019-11-08 15:05:38 -0800 | [diff] [blame] | 1491 | geo->blksize - geo->data_entry_offset) { |
| 1492 | ASSERT(db != geo->datablk); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1493 | if ((error = xfs_dir2_shrink_inode(args, db, dbp))) { |
| 1494 | /* |
| 1495 | * Nope, can't get rid of it because it caused |
| 1496 | * allocation of a bmap btree block to do so. |
| 1497 | * Just go on, returning success, leaving the |
| 1498 | * empty block in place. |
| 1499 | */ |
Dave Chinner | 2451337 | 2014-06-25 14:58:08 +1000 | [diff] [blame] | 1500 | if (error == -ENOSPC && args->total == 0) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1501 | error = 0; |
Dave Chinner | 4141956 | 2013-10-29 22:11:50 +1100 | [diff] [blame] | 1502 | xfs_dir3_leaf_check(dp, lbp); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1503 | return error; |
| 1504 | } |
| 1505 | dbp = NULL; |
| 1506 | /* |
| 1507 | * If this is the last data block then compact the |
| 1508 | * bests table by getting rid of entries. |
| 1509 | */ |
Nathan Scott | afbcb3f | 2006-03-17 17:27:28 +1100 | [diff] [blame] | 1510 | if (db == be32_to_cpu(ltp->bestcount) - 1) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1511 | /* |
| 1512 | * Look for the last active entry (i). |
| 1513 | */ |
| 1514 | for (i = db - 1; i > 0; i--) { |
Christoph Hellwig | 69ef921 | 2011-07-08 14:36:05 +0200 | [diff] [blame] | 1515 | if (bestsp[i] != cpu_to_be16(NULLDATAOFF)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1516 | break; |
| 1517 | } |
| 1518 | /* |
| 1519 | * Copy the table down so inactive entries at the |
| 1520 | * end are removed. |
| 1521 | */ |
| 1522 | memmove(&bestsp[db - i], bestsp, |
Nathan Scott | afbcb3f | 2006-03-17 17:27:28 +1100 | [diff] [blame] | 1523 | (be32_to_cpu(ltp->bestcount) - (db - i)) * sizeof(*bestsp)); |
Marcin Slusarz | 413d57c | 2008-02-13 15:03:29 -0800 | [diff] [blame] | 1524 | be32_add_cpu(<p->bestcount, -(db - i)); |
Dave Chinner | bc85178 | 2014-06-06 15:20:54 +1000 | [diff] [blame] | 1525 | xfs_dir3_leaf_log_tail(args, lbp); |
| 1526 | xfs_dir3_leaf_log_bests(args, lbp, 0, |
| 1527 | be32_to_cpu(ltp->bestcount) - 1); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1528 | } else |
Nathan Scott | 68b3a10 | 2006-03-17 17:27:19 +1100 | [diff] [blame] | 1529 | bestsp[db] = cpu_to_be16(NULLDATAOFF); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1530 | } |
| 1531 | /* |
| 1532 | * If the data block was not the first one, drop it. |
| 1533 | */ |
Christoph Hellwig | d73e1ce | 2019-11-08 15:05:38 -0800 | [diff] [blame] | 1534 | else if (db != geo->datablk) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1535 | dbp = NULL; |
Dave Chinner | 1d9025e | 2012-06-22 18:50:14 +1000 | [diff] [blame] | 1536 | |
Dave Chinner | 4141956 | 2013-10-29 22:11:50 +1100 | [diff] [blame] | 1537 | xfs_dir3_leaf_check(dp, lbp); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1538 | /* |
| 1539 | * See if we can convert to block form. |
| 1540 | */ |
| 1541 | return xfs_dir2_leaf_to_block(args, lbp, dbp); |
| 1542 | } |
| 1543 | |
| 1544 | /* |
| 1545 | * Replace the inode number in a leaf format directory entry. |
| 1546 | */ |
| 1547 | int /* error */ |
| 1548 | xfs_dir2_leaf_replace( |
| 1549 | xfs_da_args_t *args) /* operation arguments */ |
| 1550 | { |
Dave Chinner | 1d9025e | 2012-06-22 18:50:14 +1000 | [diff] [blame] | 1551 | struct xfs_buf *dbp; /* data block buffer */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1552 | xfs_dir2_data_entry_t *dep; /* data block entry */ |
| 1553 | xfs_inode_t *dp; /* incore directory inode */ |
| 1554 | int error; /* error return code */ |
| 1555 | int index; /* index of leaf entry */ |
Dave Chinner | 1d9025e | 2012-06-22 18:50:14 +1000 | [diff] [blame] | 1556 | struct xfs_buf *lbp; /* leaf buffer */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1557 | xfs_dir2_leaf_entry_t *lep; /* leaf entry */ |
| 1558 | xfs_trans_t *tp; /* transaction pointer */ |
Christoph Hellwig | 787b089 | 2019-11-08 14:57:50 -0800 | [diff] [blame] | 1559 | struct xfs_dir3_icleaf_hdr leafhdr; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1560 | |
Christoph Hellwig | 0b1b213 | 2009-12-14 23:14:59 +0000 | [diff] [blame] | 1561 | trace_xfs_dir2_leaf_replace(args); |
| 1562 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1563 | /* |
| 1564 | * Look up the entry. |
| 1565 | */ |
Christoph Hellwig | 787b089 | 2019-11-08 14:57:50 -0800 | [diff] [blame] | 1566 | error = xfs_dir2_leaf_lookup_int(args, &lbp, &index, &dbp, &leafhdr); |
| 1567 | if (error) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1568 | return error; |
Christoph Hellwig | 787b089 | 2019-11-08 14:57:50 -0800 | [diff] [blame] | 1569 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1570 | dp = args->dp; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1571 | /* |
| 1572 | * Point to the leaf entry, get data address from it. |
| 1573 | */ |
Christoph Hellwig | 787b089 | 2019-11-08 14:57:50 -0800 | [diff] [blame] | 1574 | lep = &leafhdr.ents[index]; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1575 | /* |
| 1576 | * Point to the data entry. |
| 1577 | */ |
| 1578 | dep = (xfs_dir2_data_entry_t *) |
Dave Chinner | 1d9025e | 2012-06-22 18:50:14 +1000 | [diff] [blame] | 1579 | ((char *)dbp->b_addr + |
Dave Chinner | 3002803 | 2014-06-06 15:08:18 +1000 | [diff] [blame] | 1580 | xfs_dir2_dataptr_to_off(args->geo, be32_to_cpu(lep->address))); |
Christoph Hellwig | ff9901c | 2006-06-09 14:48:37 +1000 | [diff] [blame] | 1581 | ASSERT(args->inumber != be64_to_cpu(dep->inumber)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1582 | /* |
| 1583 | * Put the new inode number in, log it. |
| 1584 | */ |
Christoph Hellwig | ff9901c | 2006-06-09 14:48:37 +1000 | [diff] [blame] | 1585 | dep->inumber = cpu_to_be64(args->inumber); |
Christoph Hellwig | 59b8b46 | 2019-11-08 15:05:48 -0800 | [diff] [blame] | 1586 | xfs_dir2_data_put_ftype(dp->i_mount, dep, args->filetype); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1587 | tp = args->trans; |
Dave Chinner | bc85178 | 2014-06-06 15:20:54 +1000 | [diff] [blame] | 1588 | xfs_dir2_data_log_entry(args, dbp, dep); |
Dave Chinner | 4141956 | 2013-10-29 22:11:50 +1100 | [diff] [blame] | 1589 | xfs_dir3_leaf_check(dp, lbp); |
Dave Chinner | 1d9025e | 2012-06-22 18:50:14 +1000 | [diff] [blame] | 1590 | xfs_trans_brelse(tp, lbp); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1591 | return 0; |
| 1592 | } |
| 1593 | |
| 1594 | /* |
| 1595 | * Return index in the leaf block (lbp) which is either the first |
| 1596 | * one with this hash value, or if there are none, the insert point |
| 1597 | * for that hash value. |
| 1598 | */ |
| 1599 | int /* index value */ |
| 1600 | xfs_dir2_leaf_search_hash( |
| 1601 | xfs_da_args_t *args, /* operation arguments */ |
Dave Chinner | 1d9025e | 2012-06-22 18:50:14 +1000 | [diff] [blame] | 1602 | struct xfs_buf *lbp) /* leaf buffer */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1603 | { |
| 1604 | xfs_dahash_t hash=0; /* hash from this entry */ |
| 1605 | xfs_dahash_t hashwant; /* hash value looking for */ |
| 1606 | int high; /* high leaf index */ |
| 1607 | int low; /* low leaf index */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1608 | xfs_dir2_leaf_entry_t *lep; /* leaf entry */ |
| 1609 | int mid=0; /* current leaf index */ |
Dave Chinner | 24df33b | 2013-04-12 07:30:21 +1000 | [diff] [blame] | 1610 | struct xfs_dir3_icleaf_hdr leafhdr; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1611 | |
Christoph Hellwig | 787b089 | 2019-11-08 14:57:50 -0800 | [diff] [blame] | 1612 | xfs_dir2_leaf_hdr_from_disk(args->dp->i_mount, &leafhdr, lbp->b_addr); |
Dave Chinner | 24df33b | 2013-04-12 07:30:21 +1000 | [diff] [blame] | 1613 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1614 | /* |
| 1615 | * Note, the table cannot be empty, so we have to go through the loop. |
| 1616 | * Binary search the leaf entries looking for our hash value. |
| 1617 | */ |
Christoph Hellwig | 787b089 | 2019-11-08 14:57:50 -0800 | [diff] [blame] | 1618 | for (lep = leafhdr.ents, low = 0, high = leafhdr.count - 1, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1619 | hashwant = args->hashval; |
| 1620 | low <= high; ) { |
| 1621 | mid = (low + high) >> 1; |
Nathan Scott | 3c1f9c1 | 2006-03-17 17:28:18 +1100 | [diff] [blame] | 1622 | if ((hash = be32_to_cpu(lep[mid].hashval)) == hashwant) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1623 | break; |
| 1624 | if (hash < hashwant) |
| 1625 | low = mid + 1; |
| 1626 | else |
| 1627 | high = mid - 1; |
| 1628 | } |
| 1629 | /* |
| 1630 | * Found one, back up through all the equal hash values. |
| 1631 | */ |
| 1632 | if (hash == hashwant) { |
Nathan Scott | 3c1f9c1 | 2006-03-17 17:28:18 +1100 | [diff] [blame] | 1633 | while (mid > 0 && be32_to_cpu(lep[mid - 1].hashval) == hashwant) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1634 | mid--; |
| 1635 | } |
| 1636 | } |
| 1637 | /* |
| 1638 | * Need to point to an entry higher than ours. |
| 1639 | */ |
| 1640 | else if (hash < hashwant) |
| 1641 | mid++; |
| 1642 | return mid; |
| 1643 | } |
| 1644 | |
| 1645 | /* |
| 1646 | * Trim off a trailing data block. We know it's empty since the leaf |
| 1647 | * freespace table says so. |
| 1648 | */ |
| 1649 | int /* error */ |
| 1650 | xfs_dir2_leaf_trim_data( |
| 1651 | xfs_da_args_t *args, /* operation arguments */ |
Dave Chinner | 1d9025e | 2012-06-22 18:50:14 +1000 | [diff] [blame] | 1652 | struct xfs_buf *lbp, /* leaf buffer */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1653 | xfs_dir2_db_t db) /* data block number */ |
| 1654 | { |
Christoph Hellwig | d73e1ce | 2019-11-08 15:05:38 -0800 | [diff] [blame] | 1655 | struct xfs_da_geometry *geo = args->geo; |
Nathan Scott | 68b3a10 | 2006-03-17 17:27:19 +1100 | [diff] [blame] | 1656 | __be16 *bestsp; /* leaf bests table */ |
Dave Chinner | 1d9025e | 2012-06-22 18:50:14 +1000 | [diff] [blame] | 1657 | struct xfs_buf *dbp; /* data block buffer */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1658 | xfs_inode_t *dp; /* incore directory inode */ |
| 1659 | int error; /* error return value */ |
| 1660 | xfs_dir2_leaf_t *leaf; /* leaf structure */ |
| 1661 | xfs_dir2_leaf_tail_t *ltp; /* leaf tail structure */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1662 | xfs_trans_t *tp; /* transaction pointer */ |
| 1663 | |
| 1664 | dp = args->dp; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1665 | tp = args->trans; |
| 1666 | /* |
| 1667 | * Read the offending data block. We need its buffer. |
| 1668 | */ |
Darrick J. Wong | cc6740d | 2024-04-15 14:54:40 -0700 | [diff] [blame] | 1669 | error = xfs_dir3_data_read(tp, dp, args->owner, |
| 1670 | xfs_dir2_db_to_da(geo, db), 0, &dbp); |
Dave Chinner | 4bb20a8 | 2012-11-12 22:54:10 +1100 | [diff] [blame] | 1671 | if (error) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1672 | return error; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1673 | |
Dave Chinner | 1d9025e | 2012-06-22 18:50:14 +1000 | [diff] [blame] | 1674 | leaf = lbp->b_addr; |
Christoph Hellwig | d73e1ce | 2019-11-08 15:05:38 -0800 | [diff] [blame] | 1675 | ltp = xfs_dir2_leaf_tail_p(geo, leaf); |
Christoph Hellwig | c2066e2 | 2011-07-08 14:35:38 +0200 | [diff] [blame] | 1676 | |
| 1677 | #ifdef DEBUG |
| 1678 | { |
Dave Chinner | 1d9025e | 2012-06-22 18:50:14 +1000 | [diff] [blame] | 1679 | struct xfs_dir2_data_hdr *hdr = dbp->b_addr; |
Christoph Hellwig | 1848b60 | 2019-11-08 15:05:39 -0800 | [diff] [blame] | 1680 | struct xfs_dir2_data_free *bf = |
| 1681 | xfs_dir2_data_bestfree_p(dp->i_mount, hdr); |
Christoph Hellwig | c2066e2 | 2011-07-08 14:35:38 +0200 | [diff] [blame] | 1682 | |
Dave Chinner | 33363fe | 2013-04-03 16:11:22 +1100 | [diff] [blame] | 1683 | ASSERT(hdr->magic == cpu_to_be32(XFS_DIR2_DATA_MAGIC) || |
| 1684 | hdr->magic == cpu_to_be32(XFS_DIR3_DATA_MAGIC)); |
| 1685 | ASSERT(be16_to_cpu(bf[0].length) == |
Christoph Hellwig | d73e1ce | 2019-11-08 15:05:38 -0800 | [diff] [blame] | 1686 | geo->blksize - geo->data_entry_offset); |
Nathan Scott | afbcb3f | 2006-03-17 17:27:28 +1100 | [diff] [blame] | 1687 | ASSERT(db == be32_to_cpu(ltp->bestcount) - 1); |
Christoph Hellwig | c2066e2 | 2011-07-08 14:35:38 +0200 | [diff] [blame] | 1688 | } |
| 1689 | #endif |
| 1690 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1691 | /* |
| 1692 | * Get rid of the data block. |
| 1693 | */ |
| 1694 | if ((error = xfs_dir2_shrink_inode(args, db, dbp))) { |
Dave Chinner | 2451337 | 2014-06-25 14:58:08 +1000 | [diff] [blame] | 1695 | ASSERT(error != -ENOSPC); |
Dave Chinner | 1d9025e | 2012-06-22 18:50:14 +1000 | [diff] [blame] | 1696 | xfs_trans_brelse(tp, dbp); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1697 | return error; |
| 1698 | } |
| 1699 | /* |
| 1700 | * Eliminate the last bests entry from the table. |
| 1701 | */ |
Christoph Hellwig | bbaaf53 | 2007-06-28 16:43:50 +1000 | [diff] [blame] | 1702 | bestsp = xfs_dir2_leaf_bests_p(ltp); |
Marcin Slusarz | 413d57c | 2008-02-13 15:03:29 -0800 | [diff] [blame] | 1703 | be32_add_cpu(<p->bestcount, -1); |
Nathan Scott | afbcb3f | 2006-03-17 17:27:28 +1100 | [diff] [blame] | 1704 | memmove(&bestsp[1], &bestsp[0], be32_to_cpu(ltp->bestcount) * sizeof(*bestsp)); |
Dave Chinner | bc85178 | 2014-06-06 15:20:54 +1000 | [diff] [blame] | 1705 | xfs_dir3_leaf_log_tail(args, lbp); |
| 1706 | xfs_dir3_leaf_log_bests(args, lbp, 0, be32_to_cpu(ltp->bestcount) - 1); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1707 | return 0; |
| 1708 | } |
| 1709 | |
Christoph Hellwig | 2282396 | 2011-07-08 14:35:53 +0200 | [diff] [blame] | 1710 | static inline size_t |
Dave Chinner | 24df33b | 2013-04-12 07:30:21 +1000 | [diff] [blame] | 1711 | xfs_dir3_leaf_size( |
| 1712 | struct xfs_dir3_icleaf_hdr *hdr, |
Christoph Hellwig | 2282396 | 2011-07-08 14:35:53 +0200 | [diff] [blame] | 1713 | int counts) |
| 1714 | { |
Dave Chinner | 24df33b | 2013-04-12 07:30:21 +1000 | [diff] [blame] | 1715 | int entries; |
| 1716 | int hdrsize; |
Christoph Hellwig | 2282396 | 2011-07-08 14:35:53 +0200 | [diff] [blame] | 1717 | |
Dave Chinner | 24df33b | 2013-04-12 07:30:21 +1000 | [diff] [blame] | 1718 | entries = hdr->count - hdr->stale; |
| 1719 | if (hdr->magic == XFS_DIR2_LEAF1_MAGIC || |
| 1720 | hdr->magic == XFS_DIR2_LEAFN_MAGIC) |
| 1721 | hdrsize = sizeof(struct xfs_dir2_leaf_hdr); |
| 1722 | else |
| 1723 | hdrsize = sizeof(struct xfs_dir3_leaf_hdr); |
| 1724 | |
| 1725 | return hdrsize + entries * sizeof(xfs_dir2_leaf_entry_t) |
| 1726 | + counts * sizeof(xfs_dir2_data_off_t) |
| 1727 | + sizeof(xfs_dir2_leaf_tail_t); |
Christoph Hellwig | 2282396 | 2011-07-08 14:35:53 +0200 | [diff] [blame] | 1728 | } |
| 1729 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1730 | /* |
| 1731 | * Convert node form directory to leaf form directory. |
| 1732 | * The root of the node form dir needs to already be a LEAFN block. |
| 1733 | * Just return if we can't do anything. |
| 1734 | */ |
| 1735 | int /* error */ |
| 1736 | xfs_dir2_node_to_leaf( |
| 1737 | xfs_da_state_t *state) /* directory operation state */ |
| 1738 | { |
| 1739 | xfs_da_args_t *args; /* operation arguments */ |
| 1740 | xfs_inode_t *dp; /* incore directory inode */ |
| 1741 | int error; /* error return code */ |
Dave Chinner | 1d9025e | 2012-06-22 18:50:14 +1000 | [diff] [blame] | 1742 | struct xfs_buf *fbp; /* buffer for freespace block */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1743 | xfs_fileoff_t fo; /* freespace file offset */ |
Dave Chinner | 1d9025e | 2012-06-22 18:50:14 +1000 | [diff] [blame] | 1744 | struct xfs_buf *lbp; /* buffer for leaf block */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1745 | xfs_dir2_leaf_tail_t *ltp; /* tail of leaf structure */ |
| 1746 | xfs_dir2_leaf_t *leaf; /* leaf structure */ |
| 1747 | xfs_mount_t *mp; /* filesystem mount point */ |
| 1748 | int rval; /* successful free trim? */ |
| 1749 | xfs_trans_t *tp; /* transaction pointer */ |
Dave Chinner | 24df33b | 2013-04-12 07:30:21 +1000 | [diff] [blame] | 1750 | struct xfs_dir3_icleaf_hdr leafhdr; |
Dave Chinner | cbc8adf | 2013-04-03 16:11:21 +1100 | [diff] [blame] | 1751 | struct xfs_dir3_icfree_hdr freehdr; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1752 | |
| 1753 | /* |
| 1754 | * There's more than a leaf level in the btree, so there must |
| 1755 | * be multiple leafn blocks. Give up. |
| 1756 | */ |
| 1757 | if (state->path.active > 1) |
| 1758 | return 0; |
| 1759 | args = state->args; |
Christoph Hellwig | 0b1b213 | 2009-12-14 23:14:59 +0000 | [diff] [blame] | 1760 | |
| 1761 | trace_xfs_dir2_node_to_leaf(args); |
| 1762 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1763 | mp = state->mp; |
| 1764 | dp = args->dp; |
| 1765 | tp = args->trans; |
| 1766 | /* |
| 1767 | * Get the last offset in the file. |
| 1768 | */ |
Eric Sandeen | 7fb2cd4 | 2014-04-14 18:58:05 +1000 | [diff] [blame] | 1769 | if ((error = xfs_bmap_last_offset(dp, &fo, XFS_DATA_FORK))) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1770 | return error; |
| 1771 | } |
Dave Chinner | d6cf130 | 2014-06-06 15:14:11 +1000 | [diff] [blame] | 1772 | fo -= args->geo->fsbcount; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1773 | /* |
| 1774 | * If there are freespace blocks other than the first one, |
| 1775 | * take this opportunity to remove trailing empty freespace blocks |
| 1776 | * that may have been left behind during no-space-reservation |
| 1777 | * operations. |
| 1778 | */ |
Dave Chinner | 7dda6e8 | 2014-06-06 15:11:18 +1000 | [diff] [blame] | 1779 | while (fo > args->geo->freeblk) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1780 | if ((error = xfs_dir2_node_trim_free(args, fo, &rval))) { |
| 1781 | return error; |
| 1782 | } |
| 1783 | if (rval) |
Dave Chinner | d6cf130 | 2014-06-06 15:14:11 +1000 | [diff] [blame] | 1784 | fo -= args->geo->fsbcount; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1785 | else |
| 1786 | return 0; |
| 1787 | } |
| 1788 | /* |
| 1789 | * Now find the block just before the freespace block. |
| 1790 | */ |
| 1791 | if ((error = xfs_bmap_last_before(tp, dp, &fo, XFS_DATA_FORK))) { |
| 1792 | return error; |
| 1793 | } |
| 1794 | /* |
| 1795 | * If it's not the single leaf block, give up. |
| 1796 | */ |
Dave Chinner | 8f66193 | 2014-06-06 15:15:59 +1000 | [diff] [blame] | 1797 | if (XFS_FSB_TO_B(mp, fo) > XFS_DIR2_LEAF_OFFSET + args->geo->blksize) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1798 | return 0; |
| 1799 | lbp = state->path.blk[0].bp; |
Dave Chinner | 1d9025e | 2012-06-22 18:50:14 +1000 | [diff] [blame] | 1800 | leaf = lbp->b_addr; |
Christoph Hellwig | 5184255 | 2019-11-08 14:57:49 -0800 | [diff] [blame] | 1801 | xfs_dir2_leaf_hdr_from_disk(mp, &leafhdr, leaf); |
Dave Chinner | 24df33b | 2013-04-12 07:30:21 +1000 | [diff] [blame] | 1802 | |
| 1803 | ASSERT(leafhdr.magic == XFS_DIR2_LEAFN_MAGIC || |
| 1804 | leafhdr.magic == XFS_DIR3_LEAFN_MAGIC); |
| 1805 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1806 | /* |
| 1807 | * Read the freespace block. |
| 1808 | */ |
Darrick J. Wong | fe6c9f8 | 2024-04-15 14:54:41 -0700 | [diff] [blame] | 1809 | error = xfs_dir2_free_read(tp, dp, args->owner, args->geo->freeblk, |
| 1810 | &fbp); |
Dave Chinner | 4bb20a8 | 2012-11-12 22:54:10 +1100 | [diff] [blame] | 1811 | if (error) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1812 | return error; |
Christoph Hellwig | a84f3d5 | 2019-11-08 14:58:05 -0800 | [diff] [blame] | 1813 | xfs_dir2_free_hdr_from_disk(mp, &freehdr, fbp->b_addr); |
Dave Chinner | cbc8adf | 2013-04-03 16:11:21 +1100 | [diff] [blame] | 1814 | |
| 1815 | ASSERT(!freehdr.firstdb); |
Christoph Hellwig | 2282396 | 2011-07-08 14:35:53 +0200 | [diff] [blame] | 1816 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1817 | /* |
| 1818 | * Now see if the leafn and free data will fit in a leaf1. |
| 1819 | * If not, release the buffer and give up. |
| 1820 | */ |
Dave Chinner | 8f66193 | 2014-06-06 15:15:59 +1000 | [diff] [blame] | 1821 | if (xfs_dir3_leaf_size(&leafhdr, freehdr.nvalid) > args->geo->blksize) { |
Dave Chinner | 1d9025e | 2012-06-22 18:50:14 +1000 | [diff] [blame] | 1822 | xfs_trans_brelse(tp, fbp); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1823 | return 0; |
| 1824 | } |
Christoph Hellwig | 2282396 | 2011-07-08 14:35:53 +0200 | [diff] [blame] | 1825 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1826 | /* |
| 1827 | * If the leaf has any stale entries in it, compress them out. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1828 | */ |
Dave Chinner | 24df33b | 2013-04-12 07:30:21 +1000 | [diff] [blame] | 1829 | if (leafhdr.stale) |
| 1830 | xfs_dir3_leaf_compact(args, &leafhdr, lbp); |
Dave Chinner | b0f539de | 2012-11-14 17:53:49 +1100 | [diff] [blame] | 1831 | |
Dave Chinner | 24df33b | 2013-04-12 07:30:21 +1000 | [diff] [blame] | 1832 | lbp->b_ops = &xfs_dir3_leaf1_buf_ops; |
Dave Chinner | 61fe135 | 2013-04-03 16:11:30 +1100 | [diff] [blame] | 1833 | xfs_trans_buf_set_type(tp, lbp, XFS_BLFT_DIR_LEAF1_BUF); |
Dave Chinner | 24df33b | 2013-04-12 07:30:21 +1000 | [diff] [blame] | 1834 | leafhdr.magic = (leafhdr.magic == XFS_DIR2_LEAFN_MAGIC) |
| 1835 | ? XFS_DIR2_LEAF1_MAGIC |
| 1836 | : XFS_DIR3_LEAF1_MAGIC; |
Dave Chinner | b0f539de | 2012-11-14 17:53:49 +1100 | [diff] [blame] | 1837 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1838 | /* |
| 1839 | * Set up the leaf tail from the freespace block. |
| 1840 | */ |
Dave Chinner | 8f66193 | 2014-06-06 15:15:59 +1000 | [diff] [blame] | 1841 | ltp = xfs_dir2_leaf_tail_p(args->geo, leaf); |
Dave Chinner | cbc8adf | 2013-04-03 16:11:21 +1100 | [diff] [blame] | 1842 | ltp->bestcount = cpu_to_be32(freehdr.nvalid); |
Dave Chinner | 24df33b | 2013-04-12 07:30:21 +1000 | [diff] [blame] | 1843 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1844 | /* |
| 1845 | * Set up the leaf bests table. |
| 1846 | */ |
Christoph Hellwig | a84f3d5 | 2019-11-08 14:58:05 -0800 | [diff] [blame] | 1847 | memcpy(xfs_dir2_leaf_bests_p(ltp), freehdr.bests, |
Dave Chinner | cbc8adf | 2013-04-03 16:11:21 +1100 | [diff] [blame] | 1848 | freehdr.nvalid * sizeof(xfs_dir2_data_off_t)); |
Dave Chinner | 24df33b | 2013-04-12 07:30:21 +1000 | [diff] [blame] | 1849 | |
Christoph Hellwig | 163fbbb | 2019-11-08 14:57:50 -0800 | [diff] [blame] | 1850 | xfs_dir2_leaf_hdr_to_disk(mp, leaf, &leafhdr); |
Dave Chinner | bc85178 | 2014-06-06 15:20:54 +1000 | [diff] [blame] | 1851 | xfs_dir3_leaf_log_header(args, lbp); |
| 1852 | xfs_dir3_leaf_log_bests(args, lbp, 0, be32_to_cpu(ltp->bestcount) - 1); |
| 1853 | xfs_dir3_leaf_log_tail(args, lbp); |
Dave Chinner | 4141956 | 2013-10-29 22:11:50 +1100 | [diff] [blame] | 1854 | xfs_dir3_leaf_check(dp, lbp); |
Dave Chinner | 24df33b | 2013-04-12 07:30:21 +1000 | [diff] [blame] | 1855 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1856 | /* |
| 1857 | * Get rid of the freespace block. |
| 1858 | */ |
Dave Chinner | 8c44a28 | 2014-06-06 15:04:41 +1000 | [diff] [blame] | 1859 | error = xfs_dir2_shrink_inode(args, |
Dave Chinner | 3002803 | 2014-06-06 15:08:18 +1000 | [diff] [blame] | 1860 | xfs_dir2_byte_to_db(args->geo, XFS_DIR2_FREE_OFFSET), |
| 1861 | fbp); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1862 | if (error) { |
| 1863 | /* |
| 1864 | * This can't fail here because it can only happen when |
| 1865 | * punching out the middle of an extent, and this is an |
| 1866 | * isolated block. |
| 1867 | */ |
Dave Chinner | 2451337 | 2014-06-25 14:58:08 +1000 | [diff] [blame] | 1868 | ASSERT(error != -ENOSPC); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1869 | return error; |
| 1870 | } |
| 1871 | fbp = NULL; |
| 1872 | /* |
| 1873 | * Now see if we can convert the single-leaf directory |
| 1874 | * down to a block form directory. |
| 1875 | * This routine always kills the dabuf for the leaf, so |
| 1876 | * eliminate it from the path. |
| 1877 | */ |
| 1878 | error = xfs_dir2_leaf_to_block(args, lbp, NULL); |
| 1879 | state->path.blk[0].bp = NULL; |
| 1880 | return error; |
| 1881 | } |