Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
Nathan Scott | 7b71876 | 2005-11-02 14:58:39 +1100 | [diff] [blame] | 2 | * Copyright (c) 2000-2003,2005 Silicon Graphics, Inc. |
| 3 | * All Rights Reserved. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4 | * |
Nathan Scott | 7b71876 | 2005-11-02 14:58:39 +1100 | [diff] [blame] | 5 | * This program is free software; you can redistribute it and/or |
| 6 | * modify it under the terms of the GNU General Public License as |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 7 | * published by the Free Software Foundation. |
| 8 | * |
Nathan Scott | 7b71876 | 2005-11-02 14:58:39 +1100 | [diff] [blame] | 9 | * This program is distributed in the hope that it would be useful, |
| 10 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 11 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 12 | * GNU General Public License for more details. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 13 | * |
Nathan Scott | 7b71876 | 2005-11-02 14:58:39 +1100 | [diff] [blame] | 14 | * You should have received a copy of the GNU General Public License |
| 15 | * along with this program; if not, write the Free Software Foundation, |
| 16 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 17 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 18 | #include "xfs.h" |
Nathan Scott | a844f45 | 2005-11-02 14:38:42 +1100 | [diff] [blame] | 19 | #include "xfs_fs.h" |
Dave Chinner | a4fbe6a | 2013-10-23 10:51:50 +1100 | [diff] [blame] | 20 | #include "xfs_format.h" |
Dave Chinner | 239880e | 2013-10-23 10:50:10 +1100 | [diff] [blame] | 21 | #include "xfs_log_format.h" |
| 22 | #include "xfs_trans_resv.h" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 23 | #include "xfs_mount.h" |
Dave Chinner | 5706278 | 2013-10-15 09:17:51 +1100 | [diff] [blame] | 24 | #include "xfs_da_format.h" |
Nathan Scott | a844f45 | 2005-11-02 14:38:42 +1100 | [diff] [blame] | 25 | #include "xfs_da_btree.h" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 26 | #include "xfs_inode.h" |
Dave Chinner | 239880e | 2013-10-23 10:50:10 +1100 | [diff] [blame] | 27 | #include "xfs_trans.h" |
Nathan Scott | a844f45 | 2005-11-02 14:38:42 +1100 | [diff] [blame] | 28 | #include "xfs_inode_item.h" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 29 | #include "xfs_error.h" |
Dave Chinner | 2b9ab5a | 2013-08-12 20:49:37 +1000 | [diff] [blame] | 30 | #include "xfs_dir2.h" |
Christoph Hellwig | 5792664 | 2011-07-13 13:43:48 +0200 | [diff] [blame] | 31 | #include "xfs_dir2_priv.h" |
Christoph Hellwig | 0b1b213 | 2009-12-14 23:14:59 +0000 | [diff] [blame] | 32 | #include "xfs_trace.h" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 33 | |
| 34 | /* |
| 35 | * Prototypes for internal functions. |
| 36 | */ |
| 37 | static void xfs_dir2_sf_addname_easy(xfs_da_args_t *args, |
| 38 | xfs_dir2_sf_entry_t *sfep, |
| 39 | xfs_dir2_data_aoff_t offset, |
| 40 | int new_isize); |
| 41 | static void xfs_dir2_sf_addname_hard(xfs_da_args_t *args, int objchange, |
| 42 | int new_isize); |
| 43 | static int xfs_dir2_sf_addname_pick(xfs_da_args_t *args, int objchange, |
| 44 | xfs_dir2_sf_entry_t **sfepp, |
| 45 | xfs_dir2_data_aoff_t *offsetp); |
| 46 | #ifdef DEBUG |
| 47 | static void xfs_dir2_sf_check(xfs_da_args_t *args); |
| 48 | #else |
| 49 | #define xfs_dir2_sf_check(args) |
| 50 | #endif /* DEBUG */ |
Christoph Hellwig | d5cf09b | 2014-07-30 09:12:05 +1000 | [diff] [blame] | 51 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 52 | static void xfs_dir2_sf_toino4(xfs_da_args_t *args); |
| 53 | static void xfs_dir2_sf_toino8(xfs_da_args_t *args); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 54 | |
Christoph Hellwig | 8bc3878 | 2011-07-08 14:35:03 +0200 | [diff] [blame] | 55 | /* |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 56 | * Given a block directory (dp/block), calculate its size as a shortform (sf) |
| 57 | * directory and a header for the sf directory, if it will fit it the |
| 58 | * space currently present in the inode. If it won't fit, the output |
| 59 | * size is too big (but not accurate). |
| 60 | */ |
| 61 | int /* size for sf form */ |
| 62 | xfs_dir2_block_sfsize( |
| 63 | xfs_inode_t *dp, /* incore inode pointer */ |
Christoph Hellwig | 4f6ae1a | 2011-07-08 14:35:27 +0200 | [diff] [blame] | 64 | xfs_dir2_data_hdr_t *hdr, /* block directory data */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 65 | xfs_dir2_sf_hdr_t *sfhp) /* output: header for sf form */ |
| 66 | { |
| 67 | xfs_dir2_dataptr_t addr; /* data entry address */ |
| 68 | xfs_dir2_leaf_entry_t *blp; /* leaf area of the block */ |
| 69 | xfs_dir2_block_tail_t *btp; /* tail area of the block */ |
| 70 | int count; /* shortform entry count */ |
| 71 | xfs_dir2_data_entry_t *dep; /* data entry in the block */ |
| 72 | int i; /* block entry index */ |
| 73 | int i8count; /* count of big-inode entries */ |
| 74 | int isdot; /* entry is "." */ |
| 75 | int isdotdot; /* entry is ".." */ |
| 76 | xfs_mount_t *mp; /* mount structure pointer */ |
| 77 | int namelen; /* total name bytes */ |
Christoph Hellwig | 5bde1ba9 | 2005-11-02 15:06:18 +1100 | [diff] [blame] | 78 | xfs_ino_t parent = 0; /* parent inode number */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 79 | int size=0; /* total computed size */ |
Dave Chinner | 0cb9776 | 2013-08-12 20:50:09 +1000 | [diff] [blame] | 80 | int has_ftype; |
Dave Chinner | 8f66193 | 2014-06-06 15:15:59 +1000 | [diff] [blame] | 81 | struct xfs_da_geometry *geo; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 82 | |
| 83 | mp = dp->i_mount; |
Dave Chinner | 8f66193 | 2014-06-06 15:15:59 +1000 | [diff] [blame] | 84 | geo = mp->m_dir_geo; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 85 | |
Dave Chinner | 0cb9776 | 2013-08-12 20:50:09 +1000 | [diff] [blame] | 86 | /* |
| 87 | * if there is a filetype field, add the extra byte to the namelen |
| 88 | * for each entry that we see. |
| 89 | */ |
| 90 | has_ftype = xfs_sb_version_hasftype(&mp->m_sb) ? 1 : 0; |
| 91 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 92 | count = i8count = namelen = 0; |
Dave Chinner | 8f66193 | 2014-06-06 15:15:59 +1000 | [diff] [blame] | 93 | btp = xfs_dir2_block_tail_p(geo, hdr); |
Christoph Hellwig | bbaaf53 | 2007-06-28 16:43:50 +1000 | [diff] [blame] | 94 | blp = xfs_dir2_block_leaf_p(btp); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 95 | |
| 96 | /* |
| 97 | * Iterate over the block's data entries by using the leaf pointers. |
| 98 | */ |
Nathan Scott | e922fff | 2006-03-17 17:27:56 +1100 | [diff] [blame] | 99 | for (i = 0; i < be32_to_cpu(btp->count); i++) { |
Nathan Scott | 3c1f9c1 | 2006-03-17 17:28:18 +1100 | [diff] [blame] | 100 | if ((addr = be32_to_cpu(blp[i].address)) == XFS_DIR2_NULL_DATAPTR) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 101 | continue; |
| 102 | /* |
| 103 | * Calculate the pointer to the entry at hand. |
| 104 | */ |
Dave Chinner | 3002803 | 2014-06-06 15:08:18 +1000 | [diff] [blame] | 105 | dep = (xfs_dir2_data_entry_t *)((char *)hdr + |
Dave Chinner | 8f66193 | 2014-06-06 15:15:59 +1000 | [diff] [blame] | 106 | xfs_dir2_dataptr_to_off(geo, addr)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 107 | /* |
| 108 | * Detect . and .., so we can special-case them. |
| 109 | * . is not included in sf directories. |
| 110 | * .. is included by just the parent inode number. |
| 111 | */ |
| 112 | isdot = dep->namelen == 1 && dep->name[0] == '.'; |
| 113 | isdotdot = |
| 114 | dep->namelen == 2 && |
| 115 | dep->name[0] == '.' && dep->name[1] == '.'; |
Christoph Hellwig | d5cf09b | 2014-07-30 09:12:05 +1000 | [diff] [blame] | 116 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 117 | if (!isdot) |
Christoph Hellwig | ff9901c | 2006-06-09 14:48:37 +1000 | [diff] [blame] | 118 | i8count += be64_to_cpu(dep->inumber) > XFS_DIR2_MAX_SHORT_INUM; |
Christoph Hellwig | d5cf09b | 2014-07-30 09:12:05 +1000 | [diff] [blame] | 119 | |
Dave Chinner | 0cb9776 | 2013-08-12 20:50:09 +1000 | [diff] [blame] | 120 | /* take into account the file type field */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 121 | if (!isdot && !isdotdot) { |
| 122 | count++; |
Dave Chinner | 0cb9776 | 2013-08-12 20:50:09 +1000 | [diff] [blame] | 123 | namelen += dep->namelen + has_ftype; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 124 | } else if (isdotdot) |
Christoph Hellwig | ff9901c | 2006-06-09 14:48:37 +1000 | [diff] [blame] | 125 | parent = be64_to_cpu(dep->inumber); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 126 | /* |
| 127 | * Calculate the new size, see if we should give up yet. |
| 128 | */ |
Christoph Hellwig | 8353a64 | 2016-07-20 11:47:21 +1000 | [diff] [blame] | 129 | size = xfs_dir2_sf_hdr_size(i8count) + /* header */ |
| 130 | count * 3 * sizeof(u8) + /* namelen + offset */ |
| 131 | namelen + /* name */ |
| 132 | (i8count ? /* inumber */ |
Christoph Hellwig | 266b696 | 2016-07-20 11:48:31 +1000 | [diff] [blame] | 133 | count * XFS_INO64_SIZE : |
| 134 | count * XFS_INO32_SIZE); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 135 | if (size > XFS_IFORK_DSIZE(dp)) |
| 136 | return size; /* size value is a failure */ |
| 137 | } |
| 138 | /* |
| 139 | * Create the output header, if it worked. |
| 140 | */ |
| 141 | sfhp->count = count; |
| 142 | sfhp->i8count = i8count; |
Dave Chinner | 4740175 | 2013-10-29 22:11:47 +1100 | [diff] [blame] | 143 | dp->d_ops->sf_put_parent_ino(sfhp, parent); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 144 | return size; |
| 145 | } |
| 146 | |
| 147 | /* |
| 148 | * Convert a block format directory to shortform. |
| 149 | * Caller has already checked that it will fit, and built us a header. |
| 150 | */ |
| 151 | int /* error */ |
| 152 | xfs_dir2_block_to_sf( |
| 153 | xfs_da_args_t *args, /* operation arguments */ |
Dave Chinner | 1d9025e | 2012-06-22 18:50:14 +1000 | [diff] [blame] | 154 | struct xfs_buf *bp, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 155 | int size, /* shortform directory size */ |
| 156 | xfs_dir2_sf_hdr_t *sfhp) /* shortform directory hdr */ |
| 157 | { |
Christoph Hellwig | a64b041 | 2011-07-08 14:35:32 +0200 | [diff] [blame] | 158 | xfs_dir2_data_hdr_t *hdr; /* block header */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 159 | xfs_dir2_block_tail_t *btp; /* block tail pointer */ |
| 160 | xfs_dir2_data_entry_t *dep; /* data entry pointer */ |
| 161 | xfs_inode_t *dp; /* incore directory inode */ |
| 162 | xfs_dir2_data_unused_t *dup; /* unused data pointer */ |
| 163 | char *endptr; /* end of data entries */ |
| 164 | int error; /* error return value */ |
| 165 | int logflags; /* inode logging flags */ |
| 166 | xfs_mount_t *mp; /* filesystem mount point */ |
| 167 | char *ptr; /* current data pointer */ |
| 168 | xfs_dir2_sf_entry_t *sfep; /* shortform entry */ |
Christoph Hellwig | ac8ba50 | 2011-07-08 14:35:13 +0200 | [diff] [blame] | 169 | xfs_dir2_sf_hdr_t *sfp; /* shortform directory header */ |
Dave Chinner | b3f03ba | 2013-12-03 23:50:57 +1100 | [diff] [blame] | 170 | xfs_dir2_sf_hdr_t *dst; /* temporary data buffer */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 171 | |
Christoph Hellwig | 0b1b213 | 2009-12-14 23:14:59 +0000 | [diff] [blame] | 172 | trace_xfs_dir2_block_to_sf(args); |
| 173 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 174 | dp = args->dp; |
| 175 | mp = dp->i_mount; |
| 176 | |
| 177 | /* |
Dave Chinner | b3f03ba | 2013-12-03 23:50:57 +1100 | [diff] [blame] | 178 | * allocate a temporary destination buffer the size of the inode |
| 179 | * to format the data into. Once we have formatted the data, we |
| 180 | * can free the block and copy the formatted data into the inode literal |
| 181 | * area. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 182 | */ |
Dave Chinner | b3f03ba | 2013-12-03 23:50:57 +1100 | [diff] [blame] | 183 | dst = kmem_alloc(mp->m_sb.sb_inodesize, KM_SLEEP); |
| 184 | hdr = bp->b_addr; |
Christoph Hellwig | 4f6ae1a | 2011-07-08 14:35:27 +0200 | [diff] [blame] | 185 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 186 | /* |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 187 | * Copy the header into the newly allocate local space. |
| 188 | */ |
Dave Chinner | b3f03ba | 2013-12-03 23:50:57 +1100 | [diff] [blame] | 189 | sfp = (xfs_dir2_sf_hdr_t *)dst; |
Christoph Hellwig | bbaaf53 | 2007-06-28 16:43:50 +1000 | [diff] [blame] | 190 | memcpy(sfp, sfhp, xfs_dir2_sf_hdr_size(sfhp->i8count)); |
Dave Chinner | b3f03ba | 2013-12-03 23:50:57 +1100 | [diff] [blame] | 191 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 192 | /* |
| 193 | * Set up to loop over the block's entries. |
| 194 | */ |
Dave Chinner | 8f66193 | 2014-06-06 15:15:59 +1000 | [diff] [blame] | 195 | btp = xfs_dir2_block_tail_p(args->geo, hdr); |
Dave Chinner | 2ca9877 | 2013-10-29 22:11:49 +1100 | [diff] [blame] | 196 | ptr = (char *)dp->d_ops->data_entry_p(hdr); |
Christoph Hellwig | bbaaf53 | 2007-06-28 16:43:50 +1000 | [diff] [blame] | 197 | endptr = (char *)xfs_dir2_block_leaf_p(btp); |
| 198 | sfep = xfs_dir2_sf_firstentry(sfp); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 199 | /* |
| 200 | * Loop over the active and unused entries. |
| 201 | * Stop when we reach the leaf/tail portion of the block. |
| 202 | */ |
| 203 | while (ptr < endptr) { |
| 204 | /* |
| 205 | * If it's unused, just skip over it. |
| 206 | */ |
| 207 | dup = (xfs_dir2_data_unused_t *)ptr; |
Nathan Scott | ad354eb | 2006-03-17 17:27:37 +1100 | [diff] [blame] | 208 | if (be16_to_cpu(dup->freetag) == XFS_DIR2_DATA_FREE_TAG) { |
| 209 | ptr += be16_to_cpu(dup->length); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 210 | continue; |
| 211 | } |
| 212 | dep = (xfs_dir2_data_entry_t *)ptr; |
| 213 | /* |
| 214 | * Skip . |
| 215 | */ |
| 216 | if (dep->namelen == 1 && dep->name[0] == '.') |
Christoph Hellwig | ff9901c | 2006-06-09 14:48:37 +1000 | [diff] [blame] | 217 | ASSERT(be64_to_cpu(dep->inumber) == dp->i_ino); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 218 | /* |
| 219 | * Skip .., but make sure the inode number is right. |
| 220 | */ |
| 221 | else if (dep->namelen == 2 && |
| 222 | dep->name[0] == '.' && dep->name[1] == '.') |
Christoph Hellwig | ff9901c | 2006-06-09 14:48:37 +1000 | [diff] [blame] | 223 | ASSERT(be64_to_cpu(dep->inumber) == |
Dave Chinner | 4740175 | 2013-10-29 22:11:47 +1100 | [diff] [blame] | 224 | dp->d_ops->sf_get_parent_ino(sfp)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 225 | /* |
| 226 | * Normal entry, copy it into shortform. |
| 227 | */ |
| 228 | else { |
| 229 | sfep->namelen = dep->namelen; |
Christoph Hellwig | bbaaf53 | 2007-06-28 16:43:50 +1000 | [diff] [blame] | 230 | xfs_dir2_sf_put_offset(sfep, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 231 | (xfs_dir2_data_aoff_t) |
Christoph Hellwig | a64b041 | 2011-07-08 14:35:32 +0200 | [diff] [blame] | 232 | ((char *)dep - (char *)hdr)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 233 | memcpy(sfep->name, dep->name, dep->namelen); |
Dave Chinner | 4740175 | 2013-10-29 22:11:47 +1100 | [diff] [blame] | 234 | dp->d_ops->sf_put_ino(sfp, sfep, |
| 235 | be64_to_cpu(dep->inumber)); |
| 236 | dp->d_ops->sf_put_ftype(sfep, |
Dave Chinner | 9d23fc8 | 2013-10-29 22:11:48 +1100 | [diff] [blame] | 237 | dp->d_ops->data_get_ftype(dep)); |
Christoph Hellwig | 8bc3878 | 2011-07-08 14:35:03 +0200 | [diff] [blame] | 238 | |
Dave Chinner | 32c5483 | 2013-10-29 22:11:46 +1100 | [diff] [blame] | 239 | sfep = dp->d_ops->sf_nextentry(sfp, sfep); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 240 | } |
Dave Chinner | 9d23fc8 | 2013-10-29 22:11:48 +1100 | [diff] [blame] | 241 | ptr += dp->d_ops->data_entsize(dep->namelen); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 242 | } |
| 243 | ASSERT((char *)sfep - (char *)sfp == size); |
Dave Chinner | b3f03ba | 2013-12-03 23:50:57 +1100 | [diff] [blame] | 244 | |
| 245 | /* now we are done with the block, we can shrink the inode */ |
| 246 | logflags = XFS_ILOG_CORE; |
Dave Chinner | 7dda6e8 | 2014-06-06 15:11:18 +1000 | [diff] [blame] | 247 | error = xfs_dir2_shrink_inode(args, args->geo->datablk, bp); |
Dave Chinner | b3f03ba | 2013-12-03 23:50:57 +1100 | [diff] [blame] | 248 | if (error) { |
Dave Chinner | 2451337 | 2014-06-25 14:58:08 +1000 | [diff] [blame] | 249 | ASSERT(error != -ENOSPC); |
Dave Chinner | b3f03ba | 2013-12-03 23:50:57 +1100 | [diff] [blame] | 250 | goto out; |
| 251 | } |
| 252 | |
| 253 | /* |
| 254 | * The buffer is now unconditionally gone, whether |
| 255 | * xfs_dir2_shrink_inode worked or not. |
| 256 | * |
| 257 | * Convert the inode to local format and copy the data in. |
| 258 | */ |
Dave Chinner | b3f03ba | 2013-12-03 23:50:57 +1100 | [diff] [blame] | 259 | ASSERT(dp->i_df.if_bytes == 0); |
Christoph Hellwig | 143f4ae | 2016-04-06 07:41:43 +1000 | [diff] [blame] | 260 | xfs_init_local_fork(dp, XFS_DATA_FORK, dst, size); |
| 261 | dp->i_d.di_format = XFS_DINODE_FMT_LOCAL; |
| 262 | dp->i_d.di_size = size; |
Dave Chinner | b3f03ba | 2013-12-03 23:50:57 +1100 | [diff] [blame] | 263 | |
| 264 | logflags |= XFS_ILOG_DDATA; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 265 | xfs_dir2_sf_check(args); |
| 266 | out: |
| 267 | xfs_trans_log_inode(args->trans, dp, logflags); |
Dave Chinner | b3f03ba | 2013-12-03 23:50:57 +1100 | [diff] [blame] | 268 | kmem_free(dst); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 269 | return error; |
| 270 | } |
| 271 | |
| 272 | /* |
| 273 | * Add a name to a shortform directory. |
| 274 | * There are two algorithms, "easy" and "hard" which we decide on |
| 275 | * before changing anything. |
| 276 | * Convert to block form if necessary, if the new entry won't fit. |
| 277 | */ |
| 278 | int /* error */ |
| 279 | xfs_dir2_sf_addname( |
| 280 | xfs_da_args_t *args) /* operation arguments */ |
| 281 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 282 | xfs_inode_t *dp; /* incore directory inode */ |
| 283 | int error; /* error return value */ |
| 284 | int incr_isize; /* total change in size */ |
| 285 | int new_isize; /* di_size after adding name */ |
| 286 | int objchange; /* changing to 8-byte inodes */ |
Christoph Hellwig | 5bde1ba9 | 2005-11-02 15:06:18 +1100 | [diff] [blame] | 287 | xfs_dir2_data_aoff_t offset = 0; /* offset for new entry */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 288 | int pick; /* which algorithm to use */ |
Christoph Hellwig | ac8ba50 | 2011-07-08 14:35:13 +0200 | [diff] [blame] | 289 | xfs_dir2_sf_hdr_t *sfp; /* shortform structure */ |
Christoph Hellwig | 5bde1ba9 | 2005-11-02 15:06:18 +1100 | [diff] [blame] | 290 | xfs_dir2_sf_entry_t *sfep = NULL; /* shortform entry */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 291 | |
Christoph Hellwig | 0b1b213 | 2009-12-14 23:14:59 +0000 | [diff] [blame] | 292 | trace_xfs_dir2_sf_addname(args); |
| 293 | |
Dave Chinner | 2451337 | 2014-06-25 14:58:08 +1000 | [diff] [blame] | 294 | ASSERT(xfs_dir2_sf_lookup(args) == -ENOENT); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 295 | dp = args->dp; |
| 296 | ASSERT(dp->i_df.if_flags & XFS_IFINLINE); |
| 297 | /* |
| 298 | * Make sure the shortform value has some of its header. |
| 299 | */ |
| 300 | if (dp->i_d.di_size < offsetof(xfs_dir2_sf_hdr_t, parent)) { |
| 301 | ASSERT(XFS_FORCED_SHUTDOWN(dp->i_mount)); |
Dave Chinner | 2451337 | 2014-06-25 14:58:08 +1000 | [diff] [blame] | 302 | return -EIO; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 303 | } |
| 304 | ASSERT(dp->i_df.if_bytes == dp->i_d.di_size); |
| 305 | ASSERT(dp->i_df.if_u1.if_data != NULL); |
Christoph Hellwig | ac8ba50 | 2011-07-08 14:35:13 +0200 | [diff] [blame] | 306 | sfp = (xfs_dir2_sf_hdr_t *)dp->i_df.if_u1.if_data; |
| 307 | ASSERT(dp->i_d.di_size >= xfs_dir2_sf_hdr_size(sfp->i8count)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 308 | /* |
| 309 | * Compute entry (and change in) size. |
| 310 | */ |
Eric Sandeen | 5e06d14 | 2014-04-14 19:07:23 +1000 | [diff] [blame] | 311 | incr_isize = dp->d_ops->sf_entsize(sfp, args->namelen); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 312 | objchange = 0; |
Christoph Hellwig | d5cf09b | 2014-07-30 09:12:05 +1000 | [diff] [blame] | 313 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 314 | /* |
| 315 | * Do we have to change to 8 byte inodes? |
| 316 | */ |
Christoph Hellwig | ac8ba50 | 2011-07-08 14:35:13 +0200 | [diff] [blame] | 317 | if (args->inumber > XFS_DIR2_MAX_SHORT_INUM && sfp->i8count == 0) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 318 | /* |
Eric Sandeen | 5e06d14 | 2014-04-14 19:07:23 +1000 | [diff] [blame] | 319 | * Yes, adjust the inode size. old count + (parent + new) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 320 | */ |
Christoph Hellwig | 266b696 | 2016-07-20 11:48:31 +1000 | [diff] [blame] | 321 | incr_isize += (sfp->count + 2) * XFS_INO64_DIFF; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 322 | objchange = 1; |
| 323 | } |
Christoph Hellwig | d5cf09b | 2014-07-30 09:12:05 +1000 | [diff] [blame] | 324 | |
Eric Sandeen | 5e06d14 | 2014-04-14 19:07:23 +1000 | [diff] [blame] | 325 | new_isize = (int)dp->i_d.di_size + incr_isize; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 326 | /* |
| 327 | * Won't fit as shortform any more (due to size), |
| 328 | * or the pick routine says it won't (due to offset values). |
| 329 | */ |
| 330 | if (new_isize > XFS_IFORK_DSIZE(dp) || |
| 331 | (pick = |
| 332 | xfs_dir2_sf_addname_pick(args, objchange, &sfep, &offset)) == 0) { |
| 333 | /* |
| 334 | * Just checking or no space reservation, it doesn't fit. |
| 335 | */ |
Barry Naujok | 6a17810 | 2008-05-21 16:42:05 +1000 | [diff] [blame] | 336 | if ((args->op_flags & XFS_DA_OP_JUSTCHECK) || args->total == 0) |
Dave Chinner | 2451337 | 2014-06-25 14:58:08 +1000 | [diff] [blame] | 337 | return -ENOSPC; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 338 | /* |
| 339 | * Convert to block form then add the name. |
| 340 | */ |
| 341 | error = xfs_dir2_sf_to_block(args); |
| 342 | if (error) |
| 343 | return error; |
| 344 | return xfs_dir2_block_addname(args); |
| 345 | } |
| 346 | /* |
| 347 | * Just checking, it fits. |
| 348 | */ |
Barry Naujok | 6a17810 | 2008-05-21 16:42:05 +1000 | [diff] [blame] | 349 | if (args->op_flags & XFS_DA_OP_JUSTCHECK) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 350 | return 0; |
| 351 | /* |
| 352 | * Do it the easy way - just add it at the end. |
| 353 | */ |
| 354 | if (pick == 1) |
| 355 | xfs_dir2_sf_addname_easy(args, sfep, offset, new_isize); |
| 356 | /* |
| 357 | * Do it the hard way - look for a place to insert the new entry. |
| 358 | * Convert to 8 byte inode numbers first if necessary. |
| 359 | */ |
| 360 | else { |
| 361 | ASSERT(pick == 2); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 362 | if (objchange) |
| 363 | xfs_dir2_sf_toino8(args); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 364 | xfs_dir2_sf_addname_hard(args, objchange, new_isize); |
| 365 | } |
| 366 | xfs_trans_log_inode(args->trans, dp, XFS_ILOG_CORE | XFS_ILOG_DDATA); |
| 367 | return 0; |
| 368 | } |
| 369 | |
| 370 | /* |
| 371 | * Add the new entry the "easy" way. |
| 372 | * This is copying the old directory and adding the new entry at the end. |
| 373 | * Since it's sorted by "offset" we need room after the last offset |
| 374 | * that's already there, and then room to convert to a block directory. |
| 375 | * This is already checked by the pick routine. |
| 376 | */ |
| 377 | static void |
| 378 | xfs_dir2_sf_addname_easy( |
| 379 | xfs_da_args_t *args, /* operation arguments */ |
| 380 | xfs_dir2_sf_entry_t *sfep, /* pointer to new entry */ |
| 381 | xfs_dir2_data_aoff_t offset, /* offset to use for new ent */ |
| 382 | int new_isize) /* new directory size */ |
| 383 | { |
| 384 | int byteoff; /* byte offset in sf dir */ |
| 385 | xfs_inode_t *dp; /* incore directory inode */ |
Christoph Hellwig | ac8ba50 | 2011-07-08 14:35:13 +0200 | [diff] [blame] | 386 | xfs_dir2_sf_hdr_t *sfp; /* shortform structure */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 387 | |
| 388 | dp = args->dp; |
| 389 | |
Christoph Hellwig | ac8ba50 | 2011-07-08 14:35:13 +0200 | [diff] [blame] | 390 | sfp = (xfs_dir2_sf_hdr_t *)dp->i_df.if_u1.if_data; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 391 | byteoff = (int)((char *)sfep - (char *)sfp); |
| 392 | /* |
| 393 | * Grow the in-inode space. |
| 394 | */ |
Dave Chinner | 32c5483 | 2013-10-29 22:11:46 +1100 | [diff] [blame] | 395 | xfs_idata_realloc(dp, dp->d_ops->sf_entsize(sfp, args->namelen), |
Dave Chinner | 0cb9776 | 2013-08-12 20:50:09 +1000 | [diff] [blame] | 396 | XFS_DATA_FORK); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 397 | /* |
| 398 | * Need to set up again due to realloc of the inode data. |
| 399 | */ |
Christoph Hellwig | ac8ba50 | 2011-07-08 14:35:13 +0200 | [diff] [blame] | 400 | sfp = (xfs_dir2_sf_hdr_t *)dp->i_df.if_u1.if_data; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 401 | sfep = (xfs_dir2_sf_entry_t *)((char *)sfp + byteoff); |
| 402 | /* |
| 403 | * Fill in the new entry. |
| 404 | */ |
| 405 | sfep->namelen = args->namelen; |
Christoph Hellwig | bbaaf53 | 2007-06-28 16:43:50 +1000 | [diff] [blame] | 406 | xfs_dir2_sf_put_offset(sfep, offset); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 407 | memcpy(sfep->name, args->name, sfep->namelen); |
Dave Chinner | 4740175 | 2013-10-29 22:11:47 +1100 | [diff] [blame] | 408 | dp->d_ops->sf_put_ino(sfp, sfep, args->inumber); |
| 409 | dp->d_ops->sf_put_ftype(sfep, args->filetype); |
Dave Chinner | 1c55cec | 2013-08-12 20:50:10 +1000 | [diff] [blame] | 410 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 411 | /* |
| 412 | * Update the header and inode. |
| 413 | */ |
Christoph Hellwig | ac8ba50 | 2011-07-08 14:35:13 +0200 | [diff] [blame] | 414 | sfp->count++; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 415 | if (args->inumber > XFS_DIR2_MAX_SHORT_INUM) |
Christoph Hellwig | ac8ba50 | 2011-07-08 14:35:13 +0200 | [diff] [blame] | 416 | sfp->i8count++; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 417 | dp->i_d.di_size = new_isize; |
| 418 | xfs_dir2_sf_check(args); |
| 419 | } |
| 420 | |
| 421 | /* |
| 422 | * Add the new entry the "hard" way. |
| 423 | * The caller has already converted to 8 byte inode numbers if necessary, |
| 424 | * in which case we need to leave the i8count at 1. |
| 425 | * Find a hole that the new entry will fit into, and copy |
| 426 | * the first part of the entries, the new entry, and the last part of |
| 427 | * the entries. |
| 428 | */ |
| 429 | /* ARGSUSED */ |
| 430 | static void |
| 431 | xfs_dir2_sf_addname_hard( |
| 432 | xfs_da_args_t *args, /* operation arguments */ |
| 433 | int objchange, /* changing inode number size */ |
| 434 | int new_isize) /* new directory size */ |
| 435 | { |
| 436 | int add_datasize; /* data size need for new ent */ |
| 437 | char *buf; /* buffer for old */ |
| 438 | xfs_inode_t *dp; /* incore directory inode */ |
| 439 | int eof; /* reached end of old dir */ |
| 440 | int nbytes; /* temp for byte copies */ |
| 441 | xfs_dir2_data_aoff_t new_offset; /* next offset value */ |
| 442 | xfs_dir2_data_aoff_t offset; /* current offset value */ |
| 443 | int old_isize; /* previous di_size */ |
| 444 | xfs_dir2_sf_entry_t *oldsfep; /* entry in original dir */ |
Christoph Hellwig | ac8ba50 | 2011-07-08 14:35:13 +0200 | [diff] [blame] | 445 | xfs_dir2_sf_hdr_t *oldsfp; /* original shortform dir */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 446 | xfs_dir2_sf_entry_t *sfep; /* entry in new dir */ |
Christoph Hellwig | ac8ba50 | 2011-07-08 14:35:13 +0200 | [diff] [blame] | 447 | xfs_dir2_sf_hdr_t *sfp; /* new shortform dir */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 448 | |
| 449 | /* |
| 450 | * Copy the old directory to the stack buffer. |
| 451 | */ |
| 452 | dp = args->dp; |
| 453 | |
Christoph Hellwig | ac8ba50 | 2011-07-08 14:35:13 +0200 | [diff] [blame] | 454 | sfp = (xfs_dir2_sf_hdr_t *)dp->i_df.if_u1.if_data; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 455 | old_isize = (int)dp->i_d.di_size; |
| 456 | buf = kmem_alloc(old_isize, KM_SLEEP); |
Christoph Hellwig | ac8ba50 | 2011-07-08 14:35:13 +0200 | [diff] [blame] | 457 | oldsfp = (xfs_dir2_sf_hdr_t *)buf; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 458 | memcpy(oldsfp, sfp, old_isize); |
| 459 | /* |
| 460 | * Loop over the old directory finding the place we're going |
| 461 | * to insert the new entry. |
| 462 | * If it's going to end up at the end then oldsfep will point there. |
| 463 | */ |
Dave Chinner | 1c9a5b2 | 2013-10-30 09:15:02 +1100 | [diff] [blame] | 464 | for (offset = dp->d_ops->data_first_offset, |
Christoph Hellwig | bbaaf53 | 2007-06-28 16:43:50 +1000 | [diff] [blame] | 465 | oldsfep = xfs_dir2_sf_firstentry(oldsfp), |
Dave Chinner | 9d23fc8 | 2013-10-29 22:11:48 +1100 | [diff] [blame] | 466 | add_datasize = dp->d_ops->data_entsize(args->namelen), |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 467 | eof = (char *)oldsfep == &buf[old_isize]; |
| 468 | !eof; |
Dave Chinner | 9d23fc8 | 2013-10-29 22:11:48 +1100 | [diff] [blame] | 469 | offset = new_offset + dp->d_ops->data_entsize(oldsfep->namelen), |
Dave Chinner | 32c5483 | 2013-10-29 22:11:46 +1100 | [diff] [blame] | 470 | oldsfep = dp->d_ops->sf_nextentry(oldsfp, oldsfep), |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 471 | eof = (char *)oldsfep == &buf[old_isize]) { |
Christoph Hellwig | bbaaf53 | 2007-06-28 16:43:50 +1000 | [diff] [blame] | 472 | new_offset = xfs_dir2_sf_get_offset(oldsfep); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 473 | if (offset + add_datasize <= new_offset) |
| 474 | break; |
| 475 | } |
| 476 | /* |
| 477 | * Get rid of the old directory, then allocate space for |
| 478 | * the new one. We do this so xfs_idata_realloc won't copy |
| 479 | * the data. |
| 480 | */ |
| 481 | xfs_idata_realloc(dp, -old_isize, XFS_DATA_FORK); |
| 482 | xfs_idata_realloc(dp, new_isize, XFS_DATA_FORK); |
| 483 | /* |
| 484 | * Reset the pointer since the buffer was reallocated. |
| 485 | */ |
Christoph Hellwig | ac8ba50 | 2011-07-08 14:35:13 +0200 | [diff] [blame] | 486 | sfp = (xfs_dir2_sf_hdr_t *)dp->i_df.if_u1.if_data; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 487 | /* |
| 488 | * Copy the first part of the directory, including the header. |
| 489 | */ |
| 490 | nbytes = (int)((char *)oldsfep - (char *)oldsfp); |
| 491 | memcpy(sfp, oldsfp, nbytes); |
| 492 | sfep = (xfs_dir2_sf_entry_t *)((char *)sfp + nbytes); |
| 493 | /* |
| 494 | * Fill in the new entry, and update the header counts. |
| 495 | */ |
| 496 | sfep->namelen = args->namelen; |
Christoph Hellwig | bbaaf53 | 2007-06-28 16:43:50 +1000 | [diff] [blame] | 497 | xfs_dir2_sf_put_offset(sfep, offset); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 498 | memcpy(sfep->name, args->name, sfep->namelen); |
Dave Chinner | 4740175 | 2013-10-29 22:11:47 +1100 | [diff] [blame] | 499 | dp->d_ops->sf_put_ino(sfp, sfep, args->inumber); |
| 500 | dp->d_ops->sf_put_ftype(sfep, args->filetype); |
Christoph Hellwig | ac8ba50 | 2011-07-08 14:35:13 +0200 | [diff] [blame] | 501 | sfp->count++; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 502 | if (args->inumber > XFS_DIR2_MAX_SHORT_INUM && !objchange) |
Christoph Hellwig | ac8ba50 | 2011-07-08 14:35:13 +0200 | [diff] [blame] | 503 | sfp->i8count++; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 504 | /* |
| 505 | * If there's more left to copy, do that. |
| 506 | */ |
| 507 | if (!eof) { |
Dave Chinner | 32c5483 | 2013-10-29 22:11:46 +1100 | [diff] [blame] | 508 | sfep = dp->d_ops->sf_nextentry(sfp, sfep); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 509 | memcpy(sfep, oldsfep, old_isize - nbytes); |
| 510 | } |
Denys Vlasenko | f0e2d93 | 2008-05-19 16:31:57 +1000 | [diff] [blame] | 511 | kmem_free(buf); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 512 | dp->i_d.di_size = new_isize; |
| 513 | xfs_dir2_sf_check(args); |
| 514 | } |
| 515 | |
| 516 | /* |
| 517 | * Decide if the new entry will fit at all. |
| 518 | * If it will fit, pick between adding the new entry to the end (easy) |
| 519 | * or somewhere else (hard). |
| 520 | * Return 0 (won't fit), 1 (easy), 2 (hard). |
| 521 | */ |
| 522 | /*ARGSUSED*/ |
| 523 | static int /* pick result */ |
| 524 | xfs_dir2_sf_addname_pick( |
| 525 | xfs_da_args_t *args, /* operation arguments */ |
| 526 | int objchange, /* inode # size changes */ |
| 527 | xfs_dir2_sf_entry_t **sfepp, /* out(1): new entry ptr */ |
| 528 | xfs_dir2_data_aoff_t *offsetp) /* out(1): new offset */ |
| 529 | { |
| 530 | xfs_inode_t *dp; /* incore directory inode */ |
| 531 | int holefit; /* found hole it will fit in */ |
| 532 | int i; /* entry number */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 533 | xfs_dir2_data_aoff_t offset; /* data block offset */ |
| 534 | xfs_dir2_sf_entry_t *sfep; /* shortform entry */ |
Christoph Hellwig | ac8ba50 | 2011-07-08 14:35:13 +0200 | [diff] [blame] | 535 | xfs_dir2_sf_hdr_t *sfp; /* shortform structure */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 536 | int size; /* entry's data size */ |
| 537 | int used; /* data bytes used */ |
| 538 | |
| 539 | dp = args->dp; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 540 | |
Christoph Hellwig | ac8ba50 | 2011-07-08 14:35:13 +0200 | [diff] [blame] | 541 | sfp = (xfs_dir2_sf_hdr_t *)dp->i_df.if_u1.if_data; |
Dave Chinner | 9d23fc8 | 2013-10-29 22:11:48 +1100 | [diff] [blame] | 542 | size = dp->d_ops->data_entsize(args->namelen); |
Dave Chinner | 1c9a5b2 | 2013-10-30 09:15:02 +1100 | [diff] [blame] | 543 | offset = dp->d_ops->data_first_offset; |
Christoph Hellwig | bbaaf53 | 2007-06-28 16:43:50 +1000 | [diff] [blame] | 544 | sfep = xfs_dir2_sf_firstentry(sfp); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 545 | holefit = 0; |
| 546 | /* |
| 547 | * Loop over sf entries. |
| 548 | * Keep track of data offset and whether we've seen a place |
| 549 | * to insert the new entry. |
| 550 | */ |
Christoph Hellwig | ac8ba50 | 2011-07-08 14:35:13 +0200 | [diff] [blame] | 551 | for (i = 0; i < sfp->count; i++) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 552 | if (!holefit) |
Christoph Hellwig | bbaaf53 | 2007-06-28 16:43:50 +1000 | [diff] [blame] | 553 | holefit = offset + size <= xfs_dir2_sf_get_offset(sfep); |
| 554 | offset = xfs_dir2_sf_get_offset(sfep) + |
Dave Chinner | 9d23fc8 | 2013-10-29 22:11:48 +1100 | [diff] [blame] | 555 | dp->d_ops->data_entsize(sfep->namelen); |
Dave Chinner | 32c5483 | 2013-10-29 22:11:46 +1100 | [diff] [blame] | 556 | sfep = dp->d_ops->sf_nextentry(sfp, sfep); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 557 | } |
| 558 | /* |
| 559 | * Calculate data bytes used excluding the new entry, if this |
| 560 | * was a data block (block form directory). |
| 561 | */ |
| 562 | used = offset + |
Christoph Hellwig | ac8ba50 | 2011-07-08 14:35:13 +0200 | [diff] [blame] | 563 | (sfp->count + 3) * (uint)sizeof(xfs_dir2_leaf_entry_t) + |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 564 | (uint)sizeof(xfs_dir2_block_tail_t); |
| 565 | /* |
| 566 | * If it won't fit in a block form then we can't insert it, |
| 567 | * we'll go back, convert to block, then try the insert and convert |
| 568 | * to leaf. |
| 569 | */ |
Dave Chinner | 8f66193 | 2014-06-06 15:15:59 +1000 | [diff] [blame] | 570 | if (used + (holefit ? 0 : size) > args->geo->blksize) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 571 | return 0; |
| 572 | /* |
| 573 | * If changing the inode number size, do it the hard way. |
| 574 | */ |
Christoph Hellwig | d5cf09b | 2014-07-30 09:12:05 +1000 | [diff] [blame] | 575 | if (objchange) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 576 | return 2; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 577 | /* |
| 578 | * If it won't fit at the end then do it the hard way (use the hole). |
| 579 | */ |
Dave Chinner | 8f66193 | 2014-06-06 15:15:59 +1000 | [diff] [blame] | 580 | if (used + size > args->geo->blksize) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 581 | return 2; |
| 582 | /* |
| 583 | * Do it the easy way. |
| 584 | */ |
| 585 | *sfepp = sfep; |
| 586 | *offsetp = offset; |
| 587 | return 1; |
| 588 | } |
| 589 | |
| 590 | #ifdef DEBUG |
| 591 | /* |
| 592 | * Check consistency of shortform directory, assert if bad. |
| 593 | */ |
| 594 | static void |
| 595 | xfs_dir2_sf_check( |
| 596 | xfs_da_args_t *args) /* operation arguments */ |
| 597 | { |
| 598 | xfs_inode_t *dp; /* incore directory inode */ |
| 599 | int i; /* entry number */ |
| 600 | int i8count; /* number of big inode#s */ |
| 601 | xfs_ino_t ino; /* entry inode number */ |
| 602 | int offset; /* data offset */ |
| 603 | xfs_dir2_sf_entry_t *sfep; /* shortform dir entry */ |
Christoph Hellwig | ac8ba50 | 2011-07-08 14:35:13 +0200 | [diff] [blame] | 604 | xfs_dir2_sf_hdr_t *sfp; /* shortform structure */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 605 | |
| 606 | dp = args->dp; |
| 607 | |
Christoph Hellwig | ac8ba50 | 2011-07-08 14:35:13 +0200 | [diff] [blame] | 608 | sfp = (xfs_dir2_sf_hdr_t *)dp->i_df.if_u1.if_data; |
Dave Chinner | 1c9a5b2 | 2013-10-30 09:15:02 +1100 | [diff] [blame] | 609 | offset = dp->d_ops->data_first_offset; |
Dave Chinner | 4740175 | 2013-10-29 22:11:47 +1100 | [diff] [blame] | 610 | ino = dp->d_ops->sf_get_parent_ino(sfp); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 611 | i8count = ino > XFS_DIR2_MAX_SHORT_INUM; |
| 612 | |
Christoph Hellwig | bbaaf53 | 2007-06-28 16:43:50 +1000 | [diff] [blame] | 613 | for (i = 0, sfep = xfs_dir2_sf_firstentry(sfp); |
Christoph Hellwig | ac8ba50 | 2011-07-08 14:35:13 +0200 | [diff] [blame] | 614 | i < sfp->count; |
Dave Chinner | 32c5483 | 2013-10-29 22:11:46 +1100 | [diff] [blame] | 615 | i++, sfep = dp->d_ops->sf_nextentry(sfp, sfep)) { |
Christoph Hellwig | bbaaf53 | 2007-06-28 16:43:50 +1000 | [diff] [blame] | 616 | ASSERT(xfs_dir2_sf_get_offset(sfep) >= offset); |
Dave Chinner | 4740175 | 2013-10-29 22:11:47 +1100 | [diff] [blame] | 617 | ino = dp->d_ops->sf_get_ino(sfp, sfep); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 618 | i8count += ino > XFS_DIR2_MAX_SHORT_INUM; |
| 619 | offset = |
Christoph Hellwig | bbaaf53 | 2007-06-28 16:43:50 +1000 | [diff] [blame] | 620 | xfs_dir2_sf_get_offset(sfep) + |
Dave Chinner | 9d23fc8 | 2013-10-29 22:11:48 +1100 | [diff] [blame] | 621 | dp->d_ops->data_entsize(sfep->namelen); |
Dave Chinner | 4740175 | 2013-10-29 22:11:47 +1100 | [diff] [blame] | 622 | ASSERT(dp->d_ops->sf_get_ftype(sfep) < XFS_DIR3_FT_MAX); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 623 | } |
Christoph Hellwig | ac8ba50 | 2011-07-08 14:35:13 +0200 | [diff] [blame] | 624 | ASSERT(i8count == sfp->i8count); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 625 | ASSERT((char *)sfep - (char *)sfp == dp->i_d.di_size); |
| 626 | ASSERT(offset + |
Christoph Hellwig | ac8ba50 | 2011-07-08 14:35:13 +0200 | [diff] [blame] | 627 | (sfp->count + 2) * (uint)sizeof(xfs_dir2_leaf_entry_t) + |
Dave Chinner | 8f66193 | 2014-06-06 15:15:59 +1000 | [diff] [blame] | 628 | (uint)sizeof(xfs_dir2_block_tail_t) <= args->geo->blksize); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 629 | } |
| 630 | #endif /* DEBUG */ |
| 631 | |
Darrick J. Wong | 630a04e | 2017-03-15 00:24:25 -0700 | [diff] [blame] | 632 | /* Verify the consistency of an inline directory. */ |
| 633 | int |
| 634 | xfs_dir2_sf_verify( |
| 635 | struct xfs_mount *mp, |
| 636 | struct xfs_dir2_sf_hdr *sfp, |
| 637 | int size) |
| 638 | { |
| 639 | struct xfs_dir2_sf_entry *sfep; |
| 640 | struct xfs_dir2_sf_entry *next_sfep; |
| 641 | char *endp; |
| 642 | const struct xfs_dir_ops *dops; |
| 643 | xfs_ino_t ino; |
| 644 | int i; |
| 645 | int i8count; |
| 646 | int offset; |
| 647 | __uint8_t filetype; |
| 648 | |
| 649 | dops = xfs_dir_get_ops(mp, NULL); |
| 650 | |
| 651 | /* |
| 652 | * Give up if the directory is way too short. |
| 653 | */ |
| 654 | XFS_WANT_CORRUPTED_RETURN(mp, size > |
| 655 | offsetof(struct xfs_dir2_sf_hdr, parent)); |
| 656 | XFS_WANT_CORRUPTED_RETURN(mp, size >= |
| 657 | xfs_dir2_sf_hdr_size(sfp->i8count)); |
| 658 | |
| 659 | endp = (char *)sfp + size; |
| 660 | |
| 661 | /* Check .. entry */ |
| 662 | ino = dops->sf_get_parent_ino(sfp); |
| 663 | i8count = ino > XFS_DIR2_MAX_SHORT_INUM; |
| 664 | XFS_WANT_CORRUPTED_RETURN(mp, !xfs_dir_ino_validate(mp, ino)); |
| 665 | offset = dops->data_first_offset; |
| 666 | |
| 667 | /* Check all reported entries */ |
| 668 | sfep = xfs_dir2_sf_firstentry(sfp); |
| 669 | for (i = 0; i < sfp->count; i++) { |
| 670 | /* |
| 671 | * struct xfs_dir2_sf_entry has a variable length. |
| 672 | * Check the fixed-offset parts of the structure are |
| 673 | * within the data buffer. |
| 674 | */ |
| 675 | XFS_WANT_CORRUPTED_RETURN(mp, |
| 676 | ((char *)sfep + sizeof(*sfep)) < endp); |
| 677 | |
| 678 | /* Don't allow names with known bad length. */ |
| 679 | XFS_WANT_CORRUPTED_RETURN(mp, sfep->namelen > 0); |
| 680 | XFS_WANT_CORRUPTED_RETURN(mp, sfep->namelen < MAXNAMELEN); |
| 681 | |
| 682 | /* |
| 683 | * Check that the variable-length part of the structure is |
| 684 | * within the data buffer. The next entry starts after the |
| 685 | * name component, so nextentry is an acceptable test. |
| 686 | */ |
| 687 | next_sfep = dops->sf_nextentry(sfp, sfep); |
| 688 | XFS_WANT_CORRUPTED_RETURN(mp, endp >= (char *)next_sfep); |
| 689 | |
| 690 | /* Check that the offsets always increase. */ |
| 691 | XFS_WANT_CORRUPTED_RETURN(mp, |
| 692 | xfs_dir2_sf_get_offset(sfep) >= offset); |
| 693 | |
| 694 | /* Check the inode number. */ |
| 695 | ino = dops->sf_get_ino(sfp, sfep); |
| 696 | i8count += ino > XFS_DIR2_MAX_SHORT_INUM; |
| 697 | XFS_WANT_CORRUPTED_RETURN(mp, !xfs_dir_ino_validate(mp, ino)); |
| 698 | |
| 699 | /* Check the file type. */ |
| 700 | filetype = dops->sf_get_ftype(sfep); |
| 701 | XFS_WANT_CORRUPTED_RETURN(mp, filetype < XFS_DIR3_FT_MAX); |
| 702 | |
| 703 | offset = xfs_dir2_sf_get_offset(sfep) + |
| 704 | dops->data_entsize(sfep->namelen); |
| 705 | |
| 706 | sfep = next_sfep; |
| 707 | } |
| 708 | XFS_WANT_CORRUPTED_RETURN(mp, i8count == sfp->i8count); |
| 709 | XFS_WANT_CORRUPTED_RETURN(mp, (void *)sfep == (void *)endp); |
| 710 | |
| 711 | /* Make sure this whole thing ought to be in local format. */ |
| 712 | XFS_WANT_CORRUPTED_RETURN(mp, offset + |
| 713 | (sfp->count + 2) * (uint)sizeof(xfs_dir2_leaf_entry_t) + |
| 714 | (uint)sizeof(xfs_dir2_block_tail_t) <= mp->m_dir_geo->blksize); |
| 715 | |
| 716 | return 0; |
| 717 | } |
| 718 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 719 | /* |
| 720 | * Create a new (shortform) directory. |
| 721 | */ |
| 722 | int /* error, always 0 */ |
| 723 | xfs_dir2_sf_create( |
| 724 | xfs_da_args_t *args, /* operation arguments */ |
| 725 | xfs_ino_t pino) /* parent inode number */ |
| 726 | { |
| 727 | xfs_inode_t *dp; /* incore directory inode */ |
| 728 | int i8count; /* parent inode is an 8-byte number */ |
Christoph Hellwig | ac8ba50 | 2011-07-08 14:35:13 +0200 | [diff] [blame] | 729 | xfs_dir2_sf_hdr_t *sfp; /* shortform structure */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 730 | int size; /* directory size */ |
| 731 | |
Christoph Hellwig | 0b1b213 | 2009-12-14 23:14:59 +0000 | [diff] [blame] | 732 | trace_xfs_dir2_sf_create(args); |
| 733 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 734 | dp = args->dp; |
| 735 | |
| 736 | ASSERT(dp != NULL); |
| 737 | ASSERT(dp->i_d.di_size == 0); |
| 738 | /* |
| 739 | * If it's currently a zero-length extent file, |
| 740 | * convert it to local format. |
| 741 | */ |
| 742 | if (dp->i_d.di_format == XFS_DINODE_FMT_EXTENTS) { |
| 743 | dp->i_df.if_flags &= ~XFS_IFEXTENTS; /* just in case */ |
| 744 | dp->i_d.di_format = XFS_DINODE_FMT_LOCAL; |
| 745 | xfs_trans_log_inode(args->trans, dp, XFS_ILOG_CORE); |
| 746 | dp->i_df.if_flags |= XFS_IFINLINE; |
| 747 | } |
| 748 | ASSERT(dp->i_df.if_flags & XFS_IFINLINE); |
| 749 | ASSERT(dp->i_df.if_bytes == 0); |
| 750 | i8count = pino > XFS_DIR2_MAX_SHORT_INUM; |
Christoph Hellwig | bbaaf53 | 2007-06-28 16:43:50 +1000 | [diff] [blame] | 751 | size = xfs_dir2_sf_hdr_size(i8count); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 752 | /* |
| 753 | * Make a buffer for the data. |
| 754 | */ |
| 755 | xfs_idata_realloc(dp, size, XFS_DATA_FORK); |
| 756 | /* |
| 757 | * Fill in the header, |
| 758 | */ |
Christoph Hellwig | ac8ba50 | 2011-07-08 14:35:13 +0200 | [diff] [blame] | 759 | sfp = (xfs_dir2_sf_hdr_t *)dp->i_df.if_u1.if_data; |
| 760 | sfp->i8count = i8count; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 761 | /* |
| 762 | * Now can put in the inode number, since i8count is set. |
| 763 | */ |
Dave Chinner | 4740175 | 2013-10-29 22:11:47 +1100 | [diff] [blame] | 764 | dp->d_ops->sf_put_parent_ino(sfp, pino); |
Christoph Hellwig | ac8ba50 | 2011-07-08 14:35:13 +0200 | [diff] [blame] | 765 | sfp->count = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 766 | dp->i_d.di_size = size; |
| 767 | xfs_dir2_sf_check(args); |
| 768 | xfs_trans_log_inode(args->trans, dp, XFS_ILOG_CORE | XFS_ILOG_DDATA); |
| 769 | return 0; |
| 770 | } |
| 771 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 772 | /* |
| 773 | * Lookup an entry in a shortform directory. |
| 774 | * Returns EEXIST if found, ENOENT if not found. |
| 775 | */ |
| 776 | int /* error */ |
| 777 | xfs_dir2_sf_lookup( |
| 778 | xfs_da_args_t *args) /* operation arguments */ |
| 779 | { |
| 780 | xfs_inode_t *dp; /* incore directory inode */ |
| 781 | int i; /* entry index */ |
Barry Naujok | 384f3ce | 2008-05-21 16:58:22 +1000 | [diff] [blame] | 782 | int error; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 783 | xfs_dir2_sf_entry_t *sfep; /* shortform directory entry */ |
Christoph Hellwig | ac8ba50 | 2011-07-08 14:35:13 +0200 | [diff] [blame] | 784 | xfs_dir2_sf_hdr_t *sfp; /* shortform structure */ |
Barry Naujok | 5163f95 | 2008-05-21 16:41:01 +1000 | [diff] [blame] | 785 | enum xfs_dacmp cmp; /* comparison result */ |
Barry Naujok | 384f3ce | 2008-05-21 16:58:22 +1000 | [diff] [blame] | 786 | xfs_dir2_sf_entry_t *ci_sfep; /* case-insens. entry */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 787 | |
Christoph Hellwig | 0b1b213 | 2009-12-14 23:14:59 +0000 | [diff] [blame] | 788 | trace_xfs_dir2_sf_lookup(args); |
| 789 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 790 | xfs_dir2_sf_check(args); |
| 791 | dp = args->dp; |
| 792 | |
| 793 | ASSERT(dp->i_df.if_flags & XFS_IFINLINE); |
| 794 | /* |
| 795 | * Bail out if the directory is way too short. |
| 796 | */ |
| 797 | if (dp->i_d.di_size < offsetof(xfs_dir2_sf_hdr_t, parent)) { |
| 798 | ASSERT(XFS_FORCED_SHUTDOWN(dp->i_mount)); |
Dave Chinner | 2451337 | 2014-06-25 14:58:08 +1000 | [diff] [blame] | 799 | return -EIO; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 800 | } |
| 801 | ASSERT(dp->i_df.if_bytes == dp->i_d.di_size); |
| 802 | ASSERT(dp->i_df.if_u1.if_data != NULL); |
Christoph Hellwig | ac8ba50 | 2011-07-08 14:35:13 +0200 | [diff] [blame] | 803 | sfp = (xfs_dir2_sf_hdr_t *)dp->i_df.if_u1.if_data; |
| 804 | ASSERT(dp->i_d.di_size >= xfs_dir2_sf_hdr_size(sfp->i8count)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 805 | /* |
| 806 | * Special case for . |
| 807 | */ |
| 808 | if (args->namelen == 1 && args->name[0] == '.') { |
| 809 | args->inumber = dp->i_ino; |
Barry Naujok | 5163f95 | 2008-05-21 16:41:01 +1000 | [diff] [blame] | 810 | args->cmpresult = XFS_CMP_EXACT; |
Dave Chinner | 1c55cec | 2013-08-12 20:50:10 +1000 | [diff] [blame] | 811 | args->filetype = XFS_DIR3_FT_DIR; |
Dave Chinner | 2451337 | 2014-06-25 14:58:08 +1000 | [diff] [blame] | 812 | return -EEXIST; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 813 | } |
| 814 | /* |
| 815 | * Special case for .. |
| 816 | */ |
| 817 | if (args->namelen == 2 && |
| 818 | args->name[0] == '.' && args->name[1] == '.') { |
Dave Chinner | 4740175 | 2013-10-29 22:11:47 +1100 | [diff] [blame] | 819 | args->inumber = dp->d_ops->sf_get_parent_ino(sfp); |
Barry Naujok | 5163f95 | 2008-05-21 16:41:01 +1000 | [diff] [blame] | 820 | args->cmpresult = XFS_CMP_EXACT; |
Dave Chinner | 1c55cec | 2013-08-12 20:50:10 +1000 | [diff] [blame] | 821 | args->filetype = XFS_DIR3_FT_DIR; |
Dave Chinner | 2451337 | 2014-06-25 14:58:08 +1000 | [diff] [blame] | 822 | return -EEXIST; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 823 | } |
| 824 | /* |
| 825 | * Loop over all the entries trying to match ours. |
| 826 | */ |
Barry Naujok | 384f3ce | 2008-05-21 16:58:22 +1000 | [diff] [blame] | 827 | ci_sfep = NULL; |
Christoph Hellwig | ac8ba50 | 2011-07-08 14:35:13 +0200 | [diff] [blame] | 828 | for (i = 0, sfep = xfs_dir2_sf_firstentry(sfp); i < sfp->count; |
Dave Chinner | 32c5483 | 2013-10-29 22:11:46 +1100 | [diff] [blame] | 829 | i++, sfep = dp->d_ops->sf_nextentry(sfp, sfep)) { |
Barry Naujok | 5163f95 | 2008-05-21 16:41:01 +1000 | [diff] [blame] | 830 | /* |
| 831 | * Compare name and if it's an exact match, return the inode |
| 832 | * number. If it's the first case-insensitive match, store the |
| 833 | * inode number and continue looking for an exact match. |
| 834 | */ |
| 835 | cmp = dp->i_mount->m_dirnameops->compname(args, sfep->name, |
| 836 | sfep->namelen); |
| 837 | if (cmp != XFS_CMP_DIFFERENT && cmp != args->cmpresult) { |
| 838 | args->cmpresult = cmp; |
Dave Chinner | 4740175 | 2013-10-29 22:11:47 +1100 | [diff] [blame] | 839 | args->inumber = dp->d_ops->sf_get_ino(sfp, sfep); |
| 840 | args->filetype = dp->d_ops->sf_get_ftype(sfep); |
Barry Naujok | 5163f95 | 2008-05-21 16:41:01 +1000 | [diff] [blame] | 841 | if (cmp == XFS_CMP_EXACT) |
Dave Chinner | 2451337 | 2014-06-25 14:58:08 +1000 | [diff] [blame] | 842 | return -EEXIST; |
Barry Naujok | 384f3ce | 2008-05-21 16:58:22 +1000 | [diff] [blame] | 843 | ci_sfep = sfep; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 844 | } |
| 845 | } |
Barry Naujok | 6a17810 | 2008-05-21 16:42:05 +1000 | [diff] [blame] | 846 | ASSERT(args->op_flags & XFS_DA_OP_OKNOENT); |
Barry Naujok | 5163f95 | 2008-05-21 16:41:01 +1000 | [diff] [blame] | 847 | /* |
| 848 | * Here, we can only be doing a lookup (not a rename or replace). |
Dave Chinner | 2451337 | 2014-06-25 14:58:08 +1000 | [diff] [blame] | 849 | * If a case-insensitive match was not found, return -ENOENT. |
Barry Naujok | 5163f95 | 2008-05-21 16:41:01 +1000 | [diff] [blame] | 850 | */ |
Barry Naujok | 384f3ce | 2008-05-21 16:58:22 +1000 | [diff] [blame] | 851 | if (!ci_sfep) |
Dave Chinner | 2451337 | 2014-06-25 14:58:08 +1000 | [diff] [blame] | 852 | return -ENOENT; |
Barry Naujok | 384f3ce | 2008-05-21 16:58:22 +1000 | [diff] [blame] | 853 | /* otherwise process the CI match as required by the caller */ |
| 854 | error = xfs_dir_cilookup_result(args, ci_sfep->name, ci_sfep->namelen); |
Eric Sandeen | b474c7a | 2014-06-22 15:04:54 +1000 | [diff] [blame] | 855 | return error; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 856 | } |
| 857 | |
| 858 | /* |
| 859 | * Remove an entry from a shortform directory. |
| 860 | */ |
| 861 | int /* error */ |
| 862 | xfs_dir2_sf_removename( |
| 863 | xfs_da_args_t *args) |
| 864 | { |
| 865 | int byteoff; /* offset of removed entry */ |
| 866 | xfs_inode_t *dp; /* incore directory inode */ |
| 867 | int entsize; /* this entry's size */ |
| 868 | int i; /* shortform entry index */ |
| 869 | int newsize; /* new inode size */ |
| 870 | int oldsize; /* old inode size */ |
| 871 | xfs_dir2_sf_entry_t *sfep; /* shortform directory entry */ |
Christoph Hellwig | ac8ba50 | 2011-07-08 14:35:13 +0200 | [diff] [blame] | 872 | xfs_dir2_sf_hdr_t *sfp; /* shortform structure */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 873 | |
Christoph Hellwig | 0b1b213 | 2009-12-14 23:14:59 +0000 | [diff] [blame] | 874 | trace_xfs_dir2_sf_removename(args); |
| 875 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 876 | dp = args->dp; |
| 877 | |
| 878 | ASSERT(dp->i_df.if_flags & XFS_IFINLINE); |
| 879 | oldsize = (int)dp->i_d.di_size; |
| 880 | /* |
| 881 | * Bail out if the directory is way too short. |
| 882 | */ |
| 883 | if (oldsize < offsetof(xfs_dir2_sf_hdr_t, parent)) { |
| 884 | ASSERT(XFS_FORCED_SHUTDOWN(dp->i_mount)); |
Dave Chinner | 2451337 | 2014-06-25 14:58:08 +1000 | [diff] [blame] | 885 | return -EIO; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 886 | } |
| 887 | ASSERT(dp->i_df.if_bytes == oldsize); |
| 888 | ASSERT(dp->i_df.if_u1.if_data != NULL); |
Christoph Hellwig | ac8ba50 | 2011-07-08 14:35:13 +0200 | [diff] [blame] | 889 | sfp = (xfs_dir2_sf_hdr_t *)dp->i_df.if_u1.if_data; |
| 890 | ASSERT(oldsize >= xfs_dir2_sf_hdr_size(sfp->i8count)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 891 | /* |
| 892 | * Loop over the old directory entries. |
| 893 | * Find the one we're deleting. |
| 894 | */ |
Christoph Hellwig | ac8ba50 | 2011-07-08 14:35:13 +0200 | [diff] [blame] | 895 | for (i = 0, sfep = xfs_dir2_sf_firstentry(sfp); i < sfp->count; |
Dave Chinner | 32c5483 | 2013-10-29 22:11:46 +1100 | [diff] [blame] | 896 | i++, sfep = dp->d_ops->sf_nextentry(sfp, sfep)) { |
Barry Naujok | 5163f95 | 2008-05-21 16:41:01 +1000 | [diff] [blame] | 897 | if (xfs_da_compname(args, sfep->name, sfep->namelen) == |
| 898 | XFS_CMP_EXACT) { |
Dave Chinner | 4740175 | 2013-10-29 22:11:47 +1100 | [diff] [blame] | 899 | ASSERT(dp->d_ops->sf_get_ino(sfp, sfep) == |
Christoph Hellwig | 8bc3878 | 2011-07-08 14:35:03 +0200 | [diff] [blame] | 900 | args->inumber); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 901 | break; |
| 902 | } |
| 903 | } |
| 904 | /* |
| 905 | * Didn't find it. |
| 906 | */ |
Christoph Hellwig | ac8ba50 | 2011-07-08 14:35:13 +0200 | [diff] [blame] | 907 | if (i == sfp->count) |
Dave Chinner | 2451337 | 2014-06-25 14:58:08 +1000 | [diff] [blame] | 908 | return -ENOENT; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 909 | /* |
| 910 | * Calculate sizes. |
| 911 | */ |
| 912 | byteoff = (int)((char *)sfep - (char *)sfp); |
Dave Chinner | 32c5483 | 2013-10-29 22:11:46 +1100 | [diff] [blame] | 913 | entsize = dp->d_ops->sf_entsize(sfp, args->namelen); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 914 | newsize = oldsize - entsize; |
| 915 | /* |
| 916 | * Copy the part if any after the removed entry, sliding it down. |
| 917 | */ |
| 918 | if (byteoff + entsize < oldsize) |
| 919 | memmove((char *)sfp + byteoff, (char *)sfp + byteoff + entsize, |
| 920 | oldsize - (byteoff + entsize)); |
| 921 | /* |
| 922 | * Fix up the header and file size. |
| 923 | */ |
Christoph Hellwig | ac8ba50 | 2011-07-08 14:35:13 +0200 | [diff] [blame] | 924 | sfp->count--; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 925 | dp->i_d.di_size = newsize; |
| 926 | /* |
| 927 | * Reallocate, making it smaller. |
| 928 | */ |
| 929 | xfs_idata_realloc(dp, newsize - oldsize, XFS_DATA_FORK); |
Christoph Hellwig | ac8ba50 | 2011-07-08 14:35:13 +0200 | [diff] [blame] | 930 | sfp = (xfs_dir2_sf_hdr_t *)dp->i_df.if_u1.if_data; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 931 | /* |
| 932 | * Are we changing inode number size? |
| 933 | */ |
| 934 | if (args->inumber > XFS_DIR2_MAX_SHORT_INUM) { |
Christoph Hellwig | ac8ba50 | 2011-07-08 14:35:13 +0200 | [diff] [blame] | 935 | if (sfp->i8count == 1) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 936 | xfs_dir2_sf_toino4(args); |
| 937 | else |
Christoph Hellwig | ac8ba50 | 2011-07-08 14:35:13 +0200 | [diff] [blame] | 938 | sfp->i8count--; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 939 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 940 | xfs_dir2_sf_check(args); |
| 941 | xfs_trans_log_inode(args->trans, dp, XFS_ILOG_CORE | XFS_ILOG_DDATA); |
| 942 | return 0; |
| 943 | } |
| 944 | |
| 945 | /* |
| 946 | * Replace the inode number of an entry in a shortform directory. |
| 947 | */ |
| 948 | int /* error */ |
| 949 | xfs_dir2_sf_replace( |
| 950 | xfs_da_args_t *args) /* operation arguments */ |
| 951 | { |
| 952 | xfs_inode_t *dp; /* incore directory inode */ |
| 953 | int i; /* entry index */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 954 | xfs_ino_t ino=0; /* entry old inode number */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 955 | int i8elevated; /* sf_toino8 set i8count=1 */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 956 | xfs_dir2_sf_entry_t *sfep; /* shortform directory entry */ |
Christoph Hellwig | ac8ba50 | 2011-07-08 14:35:13 +0200 | [diff] [blame] | 957 | xfs_dir2_sf_hdr_t *sfp; /* shortform structure */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 958 | |
Christoph Hellwig | 0b1b213 | 2009-12-14 23:14:59 +0000 | [diff] [blame] | 959 | trace_xfs_dir2_sf_replace(args); |
| 960 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 961 | dp = args->dp; |
| 962 | |
| 963 | ASSERT(dp->i_df.if_flags & XFS_IFINLINE); |
| 964 | /* |
| 965 | * Bail out if the shortform directory is way too small. |
| 966 | */ |
| 967 | if (dp->i_d.di_size < offsetof(xfs_dir2_sf_hdr_t, parent)) { |
| 968 | ASSERT(XFS_FORCED_SHUTDOWN(dp->i_mount)); |
Dave Chinner | 2451337 | 2014-06-25 14:58:08 +1000 | [diff] [blame] | 969 | return -EIO; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 970 | } |
| 971 | ASSERT(dp->i_df.if_bytes == dp->i_d.di_size); |
| 972 | ASSERT(dp->i_df.if_u1.if_data != NULL); |
Christoph Hellwig | ac8ba50 | 2011-07-08 14:35:13 +0200 | [diff] [blame] | 973 | sfp = (xfs_dir2_sf_hdr_t *)dp->i_df.if_u1.if_data; |
| 974 | ASSERT(dp->i_d.di_size >= xfs_dir2_sf_hdr_size(sfp->i8count)); |
Christoph Hellwig | d5cf09b | 2014-07-30 09:12:05 +1000 | [diff] [blame] | 975 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 976 | /* |
| 977 | * New inode number is large, and need to convert to 8-byte inodes. |
| 978 | */ |
Christoph Hellwig | ac8ba50 | 2011-07-08 14:35:13 +0200 | [diff] [blame] | 979 | if (args->inumber > XFS_DIR2_MAX_SHORT_INUM && sfp->i8count == 0) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 980 | int error; /* error return value */ |
| 981 | int newsize; /* new inode size */ |
| 982 | |
Christoph Hellwig | 266b696 | 2016-07-20 11:48:31 +1000 | [diff] [blame] | 983 | newsize = dp->i_df.if_bytes + (sfp->count + 1) * XFS_INO64_DIFF; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 984 | /* |
| 985 | * Won't fit as shortform, convert to block then do replace. |
| 986 | */ |
| 987 | if (newsize > XFS_IFORK_DSIZE(dp)) { |
| 988 | error = xfs_dir2_sf_to_block(args); |
| 989 | if (error) { |
| 990 | return error; |
| 991 | } |
| 992 | return xfs_dir2_block_replace(args); |
| 993 | } |
| 994 | /* |
| 995 | * Still fits, convert to 8-byte now. |
| 996 | */ |
| 997 | xfs_dir2_sf_toino8(args); |
| 998 | i8elevated = 1; |
Christoph Hellwig | ac8ba50 | 2011-07-08 14:35:13 +0200 | [diff] [blame] | 999 | sfp = (xfs_dir2_sf_hdr_t *)dp->i_df.if_u1.if_data; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1000 | } else |
| 1001 | i8elevated = 0; |
Christoph Hellwig | d5cf09b | 2014-07-30 09:12:05 +1000 | [diff] [blame] | 1002 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1003 | ASSERT(args->namelen != 1 || args->name[0] != '.'); |
| 1004 | /* |
| 1005 | * Replace ..'s entry. |
| 1006 | */ |
| 1007 | if (args->namelen == 2 && |
| 1008 | args->name[0] == '.' && args->name[1] == '.') { |
Dave Chinner | 4740175 | 2013-10-29 22:11:47 +1100 | [diff] [blame] | 1009 | ino = dp->d_ops->sf_get_parent_ino(sfp); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1010 | ASSERT(args->inumber != ino); |
Dave Chinner | 4740175 | 2013-10-29 22:11:47 +1100 | [diff] [blame] | 1011 | dp->d_ops->sf_put_parent_ino(sfp, args->inumber); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1012 | } |
| 1013 | /* |
| 1014 | * Normal entry, look for the name. |
| 1015 | */ |
| 1016 | else { |
Dave Chinner | 0cb9776 | 2013-08-12 20:50:09 +1000 | [diff] [blame] | 1017 | for (i = 0, sfep = xfs_dir2_sf_firstentry(sfp); i < sfp->count; |
Dave Chinner | 32c5483 | 2013-10-29 22:11:46 +1100 | [diff] [blame] | 1018 | i++, sfep = dp->d_ops->sf_nextentry(sfp, sfep)) { |
Barry Naujok | 5163f95 | 2008-05-21 16:41:01 +1000 | [diff] [blame] | 1019 | if (xfs_da_compname(args, sfep->name, sfep->namelen) == |
| 1020 | XFS_CMP_EXACT) { |
Dave Chinner | 4740175 | 2013-10-29 22:11:47 +1100 | [diff] [blame] | 1021 | ino = dp->d_ops->sf_get_ino(sfp, sfep); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1022 | ASSERT(args->inumber != ino); |
Dave Chinner | 4740175 | 2013-10-29 22:11:47 +1100 | [diff] [blame] | 1023 | dp->d_ops->sf_put_ino(sfp, sfep, args->inumber); |
| 1024 | dp->d_ops->sf_put_ftype(sfep, args->filetype); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1025 | break; |
| 1026 | } |
| 1027 | } |
| 1028 | /* |
| 1029 | * Didn't find it. |
| 1030 | */ |
Christoph Hellwig | ac8ba50 | 2011-07-08 14:35:13 +0200 | [diff] [blame] | 1031 | if (i == sfp->count) { |
Barry Naujok | 6a17810 | 2008-05-21 16:42:05 +1000 | [diff] [blame] | 1032 | ASSERT(args->op_flags & XFS_DA_OP_OKNOENT); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1033 | if (i8elevated) |
| 1034 | xfs_dir2_sf_toino4(args); |
Dave Chinner | 2451337 | 2014-06-25 14:58:08 +1000 | [diff] [blame] | 1035 | return -ENOENT; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1036 | } |
| 1037 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1038 | /* |
| 1039 | * See if the old number was large, the new number is small. |
| 1040 | */ |
| 1041 | if (ino > XFS_DIR2_MAX_SHORT_INUM && |
| 1042 | args->inumber <= XFS_DIR2_MAX_SHORT_INUM) { |
| 1043 | /* |
| 1044 | * And the old count was one, so need to convert to small. |
| 1045 | */ |
Christoph Hellwig | ac8ba50 | 2011-07-08 14:35:13 +0200 | [diff] [blame] | 1046 | if (sfp->i8count == 1) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1047 | xfs_dir2_sf_toino4(args); |
| 1048 | else |
Christoph Hellwig | ac8ba50 | 2011-07-08 14:35:13 +0200 | [diff] [blame] | 1049 | sfp->i8count--; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1050 | } |
| 1051 | /* |
| 1052 | * See if the old number was small, the new number is large. |
| 1053 | */ |
| 1054 | if (ino <= XFS_DIR2_MAX_SHORT_INUM && |
| 1055 | args->inumber > XFS_DIR2_MAX_SHORT_INUM) { |
| 1056 | /* |
| 1057 | * add to the i8count unless we just converted to 8-byte |
| 1058 | * inodes (which does an implied i8count = 1) |
| 1059 | */ |
Christoph Hellwig | ac8ba50 | 2011-07-08 14:35:13 +0200 | [diff] [blame] | 1060 | ASSERT(sfp->i8count != 0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1061 | if (!i8elevated) |
Christoph Hellwig | ac8ba50 | 2011-07-08 14:35:13 +0200 | [diff] [blame] | 1062 | sfp->i8count++; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1063 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1064 | xfs_dir2_sf_check(args); |
| 1065 | xfs_trans_log_inode(args->trans, dp, XFS_ILOG_DDATA); |
| 1066 | return 0; |
| 1067 | } |
| 1068 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1069 | /* |
| 1070 | * Convert from 8-byte inode numbers to 4-byte inode numbers. |
| 1071 | * The last 8-byte inode number is gone, but the count is still 1. |
| 1072 | */ |
| 1073 | static void |
| 1074 | xfs_dir2_sf_toino4( |
| 1075 | xfs_da_args_t *args) /* operation arguments */ |
| 1076 | { |
| 1077 | char *buf; /* old dir's buffer */ |
| 1078 | xfs_inode_t *dp; /* incore directory inode */ |
| 1079 | int i; /* entry index */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1080 | int newsize; /* new inode size */ |
| 1081 | xfs_dir2_sf_entry_t *oldsfep; /* old sf entry */ |
Christoph Hellwig | ac8ba50 | 2011-07-08 14:35:13 +0200 | [diff] [blame] | 1082 | xfs_dir2_sf_hdr_t *oldsfp; /* old sf directory */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1083 | int oldsize; /* old inode size */ |
| 1084 | xfs_dir2_sf_entry_t *sfep; /* new sf entry */ |
Christoph Hellwig | ac8ba50 | 2011-07-08 14:35:13 +0200 | [diff] [blame] | 1085 | xfs_dir2_sf_hdr_t *sfp; /* new sf directory */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1086 | |
Christoph Hellwig | 0b1b213 | 2009-12-14 23:14:59 +0000 | [diff] [blame] | 1087 | trace_xfs_dir2_sf_toino4(args); |
| 1088 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1089 | dp = args->dp; |
| 1090 | |
| 1091 | /* |
| 1092 | * Copy the old directory to the buffer. |
| 1093 | * Then nuke it from the inode, and add the new buffer to the inode. |
| 1094 | * Don't want xfs_idata_realloc copying the data here. |
| 1095 | */ |
| 1096 | oldsize = dp->i_df.if_bytes; |
| 1097 | buf = kmem_alloc(oldsize, KM_SLEEP); |
Christoph Hellwig | ac8ba50 | 2011-07-08 14:35:13 +0200 | [diff] [blame] | 1098 | oldsfp = (xfs_dir2_sf_hdr_t *)dp->i_df.if_u1.if_data; |
| 1099 | ASSERT(oldsfp->i8count == 1); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1100 | memcpy(buf, oldsfp, oldsize); |
| 1101 | /* |
| 1102 | * Compute the new inode size. |
| 1103 | */ |
Christoph Hellwig | 266b696 | 2016-07-20 11:48:31 +1000 | [diff] [blame] | 1104 | newsize = oldsize - (oldsfp->count + 1) * XFS_INO64_DIFF; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1105 | xfs_idata_realloc(dp, -oldsize, XFS_DATA_FORK); |
| 1106 | xfs_idata_realloc(dp, newsize, XFS_DATA_FORK); |
| 1107 | /* |
| 1108 | * Reset our pointers, the data has moved. |
| 1109 | */ |
Christoph Hellwig | ac8ba50 | 2011-07-08 14:35:13 +0200 | [diff] [blame] | 1110 | oldsfp = (xfs_dir2_sf_hdr_t *)buf; |
| 1111 | sfp = (xfs_dir2_sf_hdr_t *)dp->i_df.if_u1.if_data; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1112 | /* |
| 1113 | * Fill in the new header. |
| 1114 | */ |
Christoph Hellwig | ac8ba50 | 2011-07-08 14:35:13 +0200 | [diff] [blame] | 1115 | sfp->count = oldsfp->count; |
| 1116 | sfp->i8count = 0; |
Dave Chinner | 4740175 | 2013-10-29 22:11:47 +1100 | [diff] [blame] | 1117 | dp->d_ops->sf_put_parent_ino(sfp, dp->d_ops->sf_get_parent_ino(oldsfp)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1118 | /* |
| 1119 | * Copy the entries field by field. |
| 1120 | */ |
Christoph Hellwig | bbaaf53 | 2007-06-28 16:43:50 +1000 | [diff] [blame] | 1121 | for (i = 0, sfep = xfs_dir2_sf_firstentry(sfp), |
| 1122 | oldsfep = xfs_dir2_sf_firstentry(oldsfp); |
Christoph Hellwig | ac8ba50 | 2011-07-08 14:35:13 +0200 | [diff] [blame] | 1123 | i < sfp->count; |
Dave Chinner | 32c5483 | 2013-10-29 22:11:46 +1100 | [diff] [blame] | 1124 | i++, sfep = dp->d_ops->sf_nextentry(sfp, sfep), |
| 1125 | oldsfep = dp->d_ops->sf_nextentry(oldsfp, oldsfep)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1126 | sfep->namelen = oldsfep->namelen; |
Christoph Hellwig | 8353a64 | 2016-07-20 11:47:21 +1000 | [diff] [blame] | 1127 | memcpy(sfep->offset, oldsfep->offset, sizeof(sfep->offset)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1128 | memcpy(sfep->name, oldsfep->name, sfep->namelen); |
Dave Chinner | 4740175 | 2013-10-29 22:11:47 +1100 | [diff] [blame] | 1129 | dp->d_ops->sf_put_ino(sfp, sfep, |
| 1130 | dp->d_ops->sf_get_ino(oldsfp, oldsfep)); |
| 1131 | dp->d_ops->sf_put_ftype(sfep, dp->d_ops->sf_get_ftype(oldsfep)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1132 | } |
| 1133 | /* |
| 1134 | * Clean up the inode. |
| 1135 | */ |
Denys Vlasenko | f0e2d93 | 2008-05-19 16:31:57 +1000 | [diff] [blame] | 1136 | kmem_free(buf); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1137 | dp->i_d.di_size = newsize; |
| 1138 | xfs_trans_log_inode(args->trans, dp, XFS_ILOG_CORE | XFS_ILOG_DDATA); |
| 1139 | } |
| 1140 | |
| 1141 | /* |
Eric Sandeen | 5e06d14 | 2014-04-14 19:07:23 +1000 | [diff] [blame] | 1142 | * Convert existing entries from 4-byte inode numbers to 8-byte inode numbers. |
| 1143 | * The new entry w/ an 8-byte inode number is not there yet; we leave with |
| 1144 | * i8count set to 1, but no corresponding 8-byte entry. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1145 | */ |
| 1146 | static void |
| 1147 | xfs_dir2_sf_toino8( |
| 1148 | xfs_da_args_t *args) /* operation arguments */ |
| 1149 | { |
| 1150 | char *buf; /* old dir's buffer */ |
| 1151 | xfs_inode_t *dp; /* incore directory inode */ |
| 1152 | int i; /* entry index */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1153 | int newsize; /* new inode size */ |
| 1154 | xfs_dir2_sf_entry_t *oldsfep; /* old sf entry */ |
Christoph Hellwig | ac8ba50 | 2011-07-08 14:35:13 +0200 | [diff] [blame] | 1155 | xfs_dir2_sf_hdr_t *oldsfp; /* old sf directory */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1156 | int oldsize; /* old inode size */ |
| 1157 | xfs_dir2_sf_entry_t *sfep; /* new sf entry */ |
Christoph Hellwig | ac8ba50 | 2011-07-08 14:35:13 +0200 | [diff] [blame] | 1158 | xfs_dir2_sf_hdr_t *sfp; /* new sf directory */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1159 | |
Christoph Hellwig | 0b1b213 | 2009-12-14 23:14:59 +0000 | [diff] [blame] | 1160 | trace_xfs_dir2_sf_toino8(args); |
| 1161 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1162 | dp = args->dp; |
| 1163 | |
| 1164 | /* |
| 1165 | * Copy the old directory to the buffer. |
| 1166 | * Then nuke it from the inode, and add the new buffer to the inode. |
| 1167 | * Don't want xfs_idata_realloc copying the data here. |
| 1168 | */ |
| 1169 | oldsize = dp->i_df.if_bytes; |
| 1170 | buf = kmem_alloc(oldsize, KM_SLEEP); |
Christoph Hellwig | ac8ba50 | 2011-07-08 14:35:13 +0200 | [diff] [blame] | 1171 | oldsfp = (xfs_dir2_sf_hdr_t *)dp->i_df.if_u1.if_data; |
| 1172 | ASSERT(oldsfp->i8count == 0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1173 | memcpy(buf, oldsfp, oldsize); |
| 1174 | /* |
Eric Sandeen | 5e06d14 | 2014-04-14 19:07:23 +1000 | [diff] [blame] | 1175 | * Compute the new inode size (nb: entry count + 1 for parent) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1176 | */ |
Christoph Hellwig | 266b696 | 2016-07-20 11:48:31 +1000 | [diff] [blame] | 1177 | newsize = oldsize + (oldsfp->count + 1) * XFS_INO64_DIFF; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1178 | xfs_idata_realloc(dp, -oldsize, XFS_DATA_FORK); |
| 1179 | xfs_idata_realloc(dp, newsize, XFS_DATA_FORK); |
| 1180 | /* |
| 1181 | * Reset our pointers, the data has moved. |
| 1182 | */ |
Christoph Hellwig | ac8ba50 | 2011-07-08 14:35:13 +0200 | [diff] [blame] | 1183 | oldsfp = (xfs_dir2_sf_hdr_t *)buf; |
| 1184 | sfp = (xfs_dir2_sf_hdr_t *)dp->i_df.if_u1.if_data; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1185 | /* |
| 1186 | * Fill in the new header. |
| 1187 | */ |
Christoph Hellwig | ac8ba50 | 2011-07-08 14:35:13 +0200 | [diff] [blame] | 1188 | sfp->count = oldsfp->count; |
| 1189 | sfp->i8count = 1; |
Dave Chinner | 4740175 | 2013-10-29 22:11:47 +1100 | [diff] [blame] | 1190 | dp->d_ops->sf_put_parent_ino(sfp, dp->d_ops->sf_get_parent_ino(oldsfp)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1191 | /* |
| 1192 | * Copy the entries field by field. |
| 1193 | */ |
Christoph Hellwig | bbaaf53 | 2007-06-28 16:43:50 +1000 | [diff] [blame] | 1194 | for (i = 0, sfep = xfs_dir2_sf_firstentry(sfp), |
| 1195 | oldsfep = xfs_dir2_sf_firstentry(oldsfp); |
Christoph Hellwig | ac8ba50 | 2011-07-08 14:35:13 +0200 | [diff] [blame] | 1196 | i < sfp->count; |
Dave Chinner | 32c5483 | 2013-10-29 22:11:46 +1100 | [diff] [blame] | 1197 | i++, sfep = dp->d_ops->sf_nextentry(sfp, sfep), |
| 1198 | oldsfep = dp->d_ops->sf_nextentry(oldsfp, oldsfep)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1199 | sfep->namelen = oldsfep->namelen; |
Christoph Hellwig | 8353a64 | 2016-07-20 11:47:21 +1000 | [diff] [blame] | 1200 | memcpy(sfep->offset, oldsfep->offset, sizeof(sfep->offset)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1201 | memcpy(sfep->name, oldsfep->name, sfep->namelen); |
Dave Chinner | 4740175 | 2013-10-29 22:11:47 +1100 | [diff] [blame] | 1202 | dp->d_ops->sf_put_ino(sfp, sfep, |
| 1203 | dp->d_ops->sf_get_ino(oldsfp, oldsfep)); |
| 1204 | dp->d_ops->sf_put_ftype(sfep, dp->d_ops->sf_get_ftype(oldsfep)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1205 | } |
| 1206 | /* |
| 1207 | * Clean up the inode. |
| 1208 | */ |
Denys Vlasenko | f0e2d93 | 2008-05-19 16:31:57 +1000 | [diff] [blame] | 1209 | kmem_free(buf); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1210 | dp->i_d.di_size = newsize; |
| 1211 | xfs_trans_log_inode(args->trans, dp, XFS_ILOG_CORE | XFS_ILOG_DDATA); |
| 1212 | } |