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Linus Torvalds1da177e2005-04-16 15:20:36 -07001/*
Nathan Scott7b718762005-11-02 14:58:39 +11002 * Copyright (c) 2000-2003,2005 Silicon Graphics, Inc.
3 * All Rights Reserved.
Linus Torvalds1da177e2005-04-16 15:20:36 -07004 *
Nathan Scott7b718762005-11-02 14:58:39 +11005 * 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 Torvalds1da177e2005-04-16 15:20:36 -07007 * published by the Free Software Foundation.
8 *
Nathan Scott7b718762005-11-02 14:58:39 +11009 * 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 Torvalds1da177e2005-04-16 15:20:36 -070013 *
Nathan Scott7b718762005-11-02 14:58:39 +110014 * 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 Torvalds1da177e2005-04-16 15:20:36 -070017 */
Linus Torvalds1da177e2005-04-16 15:20:36 -070018#include "xfs.h"
Nathan Scotta844f452005-11-02 14:38:42 +110019#include "xfs_fs.h"
Dave Chinnera4fbe6a2013-10-23 10:51:50 +110020#include "xfs_format.h"
Dave Chinner239880e2013-10-23 10:50:10 +110021#include "xfs_log_format.h"
22#include "xfs_trans_resv.h"
Linus Torvalds1da177e2005-04-16 15:20:36 -070023#include "xfs_mount.h"
Dave Chinner57062782013-10-15 09:17:51 +110024#include "xfs_da_format.h"
Nathan Scotta844f452005-11-02 14:38:42 +110025#include "xfs_da_btree.h"
Linus Torvalds1da177e2005-04-16 15:20:36 -070026#include "xfs_inode.h"
Dave Chinner239880e2013-10-23 10:50:10 +110027#include "xfs_trans.h"
Nathan Scotta844f452005-11-02 14:38:42 +110028#include "xfs_inode_item.h"
Linus Torvalds1da177e2005-04-16 15:20:36 -070029#include "xfs_error.h"
Dave Chinner2b9ab5a2013-08-12 20:49:37 +100030#include "xfs_dir2.h"
Christoph Hellwig57926642011-07-13 13:43:48 +020031#include "xfs_dir2_priv.h"
Christoph Hellwig0b1b2132009-12-14 23:14:59 +000032#include "xfs_trace.h"
Linus Torvalds1da177e2005-04-16 15:20:36 -070033
34/*
35 * Prototypes for internal functions.
36 */
37static 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);
41static void xfs_dir2_sf_addname_hard(xfs_da_args_t *args, int objchange,
42 int new_isize);
43static 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
47static void xfs_dir2_sf_check(xfs_da_args_t *args);
48#else
49#define xfs_dir2_sf_check(args)
50#endif /* DEBUG */
Christoph Hellwigd5cf09b2014-07-30 09:12:05 +100051
Linus Torvalds1da177e2005-04-16 15:20:36 -070052static void xfs_dir2_sf_toino4(xfs_da_args_t *args);
53static void xfs_dir2_sf_toino8(xfs_da_args_t *args);
Linus Torvalds1da177e2005-04-16 15:20:36 -070054
Christoph Hellwig8bc38782011-07-08 14:35:03 +020055/*
Linus Torvalds1da177e2005-04-16 15:20:36 -070056 * 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 */
61int /* size for sf form */
62xfs_dir2_block_sfsize(
63 xfs_inode_t *dp, /* incore inode pointer */
Christoph Hellwig4f6ae1a2011-07-08 14:35:27 +020064 xfs_dir2_data_hdr_t *hdr, /* block directory data */
Linus Torvalds1da177e2005-04-16 15:20:36 -070065 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 Hellwig5bde1ba92005-11-02 15:06:18 +110078 xfs_ino_t parent = 0; /* parent inode number */
Linus Torvalds1da177e2005-04-16 15:20:36 -070079 int size=0; /* total computed size */
Dave Chinner0cb97762013-08-12 20:50:09 +100080 int has_ftype;
Dave Chinner8f661932014-06-06 15:15:59 +100081 struct xfs_da_geometry *geo;
Linus Torvalds1da177e2005-04-16 15:20:36 -070082
83 mp = dp->i_mount;
Dave Chinner8f661932014-06-06 15:15:59 +100084 geo = mp->m_dir_geo;
Linus Torvalds1da177e2005-04-16 15:20:36 -070085
Dave Chinner0cb97762013-08-12 20:50:09 +100086 /*
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 Torvalds1da177e2005-04-16 15:20:36 -070092 count = i8count = namelen = 0;
Dave Chinner8f661932014-06-06 15:15:59 +100093 btp = xfs_dir2_block_tail_p(geo, hdr);
Christoph Hellwigbbaaf532007-06-28 16:43:50 +100094 blp = xfs_dir2_block_leaf_p(btp);
Linus Torvalds1da177e2005-04-16 15:20:36 -070095
96 /*
97 * Iterate over the block's data entries by using the leaf pointers.
98 */
Nathan Scotte922fff2006-03-17 17:27:56 +110099 for (i = 0; i < be32_to_cpu(btp->count); i++) {
Nathan Scott3c1f9c12006-03-17 17:28:18 +1100100 if ((addr = be32_to_cpu(blp[i].address)) == XFS_DIR2_NULL_DATAPTR)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700101 continue;
102 /*
103 * Calculate the pointer to the entry at hand.
104 */
Dave Chinner30028032014-06-06 15:08:18 +1000105 dep = (xfs_dir2_data_entry_t *)((char *)hdr +
Dave Chinner8f661932014-06-06 15:15:59 +1000106 xfs_dir2_dataptr_to_off(geo, addr));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700107 /*
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 Hellwigd5cf09b2014-07-30 09:12:05 +1000116
Linus Torvalds1da177e2005-04-16 15:20:36 -0700117 if (!isdot)
Christoph Hellwigff9901c2006-06-09 14:48:37 +1000118 i8count += be64_to_cpu(dep->inumber) > XFS_DIR2_MAX_SHORT_INUM;
Christoph Hellwigd5cf09b2014-07-30 09:12:05 +1000119
Dave Chinner0cb97762013-08-12 20:50:09 +1000120 /* take into account the file type field */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700121 if (!isdot && !isdotdot) {
122 count++;
Dave Chinner0cb97762013-08-12 20:50:09 +1000123 namelen += dep->namelen + has_ftype;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700124 } else if (isdotdot)
Christoph Hellwigff9901c2006-06-09 14:48:37 +1000125 parent = be64_to_cpu(dep->inumber);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700126 /*
127 * Calculate the new size, see if we should give up yet.
128 */
Christoph Hellwigbbaaf532007-06-28 16:43:50 +1000129 size = xfs_dir2_sf_hdr_size(i8count) + /* header */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700130 count + /* namelen */
131 count * (uint)sizeof(xfs_dir2_sf_off_t) + /* offset */
132 namelen + /* name */
133 (i8count ? /* inumber */
134 (uint)sizeof(xfs_dir2_ino8_t) * count :
135 (uint)sizeof(xfs_dir2_ino4_t) * count);
136 if (size > XFS_IFORK_DSIZE(dp))
137 return size; /* size value is a failure */
138 }
139 /*
140 * Create the output header, if it worked.
141 */
142 sfhp->count = count;
143 sfhp->i8count = i8count;
Dave Chinner47401752013-10-29 22:11:47 +1100144 dp->d_ops->sf_put_parent_ino(sfhp, parent);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700145 return size;
146}
147
148/*
149 * Convert a block format directory to shortform.
150 * Caller has already checked that it will fit, and built us a header.
151 */
152int /* error */
153xfs_dir2_block_to_sf(
154 xfs_da_args_t *args, /* operation arguments */
Dave Chinner1d9025e2012-06-22 18:50:14 +1000155 struct xfs_buf *bp,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700156 int size, /* shortform directory size */
157 xfs_dir2_sf_hdr_t *sfhp) /* shortform directory hdr */
158{
Christoph Hellwiga64b0412011-07-08 14:35:32 +0200159 xfs_dir2_data_hdr_t *hdr; /* block header */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700160 xfs_dir2_block_tail_t *btp; /* block tail pointer */
161 xfs_dir2_data_entry_t *dep; /* data entry pointer */
162 xfs_inode_t *dp; /* incore directory inode */
163 xfs_dir2_data_unused_t *dup; /* unused data pointer */
164 char *endptr; /* end of data entries */
165 int error; /* error return value */
166 int logflags; /* inode logging flags */
167 xfs_mount_t *mp; /* filesystem mount point */
168 char *ptr; /* current data pointer */
169 xfs_dir2_sf_entry_t *sfep; /* shortform entry */
Christoph Hellwigac8ba502011-07-08 14:35:13 +0200170 xfs_dir2_sf_hdr_t *sfp; /* shortform directory header */
Dave Chinnerb3f03ba2013-12-03 23:50:57 +1100171 xfs_dir2_sf_hdr_t *dst; /* temporary data buffer */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700172
Christoph Hellwig0b1b2132009-12-14 23:14:59 +0000173 trace_xfs_dir2_block_to_sf(args);
174
Linus Torvalds1da177e2005-04-16 15:20:36 -0700175 dp = args->dp;
176 mp = dp->i_mount;
177
178 /*
Dave Chinnerb3f03ba2013-12-03 23:50:57 +1100179 * allocate a temporary destination buffer the size of the inode
180 * to format the data into. Once we have formatted the data, we
181 * can free the block and copy the formatted data into the inode literal
182 * area.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700183 */
Dave Chinnerb3f03ba2013-12-03 23:50:57 +1100184 dst = kmem_alloc(mp->m_sb.sb_inodesize, KM_SLEEP);
185 hdr = bp->b_addr;
Christoph Hellwig4f6ae1a2011-07-08 14:35:27 +0200186
Linus Torvalds1da177e2005-04-16 15:20:36 -0700187 /*
Linus Torvalds1da177e2005-04-16 15:20:36 -0700188 * Copy the header into the newly allocate local space.
189 */
Dave Chinnerb3f03ba2013-12-03 23:50:57 +1100190 sfp = (xfs_dir2_sf_hdr_t *)dst;
Christoph Hellwigbbaaf532007-06-28 16:43:50 +1000191 memcpy(sfp, sfhp, xfs_dir2_sf_hdr_size(sfhp->i8count));
Dave Chinnerb3f03ba2013-12-03 23:50:57 +1100192
Linus Torvalds1da177e2005-04-16 15:20:36 -0700193 /*
194 * Set up to loop over the block's entries.
195 */
Dave Chinner8f661932014-06-06 15:15:59 +1000196 btp = xfs_dir2_block_tail_p(args->geo, hdr);
Dave Chinner2ca98772013-10-29 22:11:49 +1100197 ptr = (char *)dp->d_ops->data_entry_p(hdr);
Christoph Hellwigbbaaf532007-06-28 16:43:50 +1000198 endptr = (char *)xfs_dir2_block_leaf_p(btp);
199 sfep = xfs_dir2_sf_firstentry(sfp);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700200 /*
201 * Loop over the active and unused entries.
202 * Stop when we reach the leaf/tail portion of the block.
203 */
204 while (ptr < endptr) {
205 /*
206 * If it's unused, just skip over it.
207 */
208 dup = (xfs_dir2_data_unused_t *)ptr;
Nathan Scottad354eb2006-03-17 17:27:37 +1100209 if (be16_to_cpu(dup->freetag) == XFS_DIR2_DATA_FREE_TAG) {
210 ptr += be16_to_cpu(dup->length);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700211 continue;
212 }
213 dep = (xfs_dir2_data_entry_t *)ptr;
214 /*
215 * Skip .
216 */
217 if (dep->namelen == 1 && dep->name[0] == '.')
Christoph Hellwigff9901c2006-06-09 14:48:37 +1000218 ASSERT(be64_to_cpu(dep->inumber) == dp->i_ino);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700219 /*
220 * Skip .., but make sure the inode number is right.
221 */
222 else if (dep->namelen == 2 &&
223 dep->name[0] == '.' && dep->name[1] == '.')
Christoph Hellwigff9901c2006-06-09 14:48:37 +1000224 ASSERT(be64_to_cpu(dep->inumber) ==
Dave Chinner47401752013-10-29 22:11:47 +1100225 dp->d_ops->sf_get_parent_ino(sfp));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700226 /*
227 * Normal entry, copy it into shortform.
228 */
229 else {
230 sfep->namelen = dep->namelen;
Christoph Hellwigbbaaf532007-06-28 16:43:50 +1000231 xfs_dir2_sf_put_offset(sfep,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700232 (xfs_dir2_data_aoff_t)
Christoph Hellwiga64b0412011-07-08 14:35:32 +0200233 ((char *)dep - (char *)hdr));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700234 memcpy(sfep->name, dep->name, dep->namelen);
Dave Chinner47401752013-10-29 22:11:47 +1100235 dp->d_ops->sf_put_ino(sfp, sfep,
236 be64_to_cpu(dep->inumber));
237 dp->d_ops->sf_put_ftype(sfep,
Dave Chinner9d23fc82013-10-29 22:11:48 +1100238 dp->d_ops->data_get_ftype(dep));
Christoph Hellwig8bc38782011-07-08 14:35:03 +0200239
Dave Chinner32c54832013-10-29 22:11:46 +1100240 sfep = dp->d_ops->sf_nextentry(sfp, sfep);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700241 }
Dave Chinner9d23fc82013-10-29 22:11:48 +1100242 ptr += dp->d_ops->data_entsize(dep->namelen);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700243 }
244 ASSERT((char *)sfep - (char *)sfp == size);
Dave Chinnerb3f03ba2013-12-03 23:50:57 +1100245
246 /* now we are done with the block, we can shrink the inode */
247 logflags = XFS_ILOG_CORE;
Dave Chinner7dda6e82014-06-06 15:11:18 +1000248 error = xfs_dir2_shrink_inode(args, args->geo->datablk, bp);
Dave Chinnerb3f03ba2013-12-03 23:50:57 +1100249 if (error) {
Dave Chinner24513372014-06-25 14:58:08 +1000250 ASSERT(error != -ENOSPC);
Dave Chinnerb3f03ba2013-12-03 23:50:57 +1100251 goto out;
252 }
253
254 /*
255 * The buffer is now unconditionally gone, whether
256 * xfs_dir2_shrink_inode worked or not.
257 *
258 * Convert the inode to local format and copy the data in.
259 */
260 dp->i_df.if_flags &= ~XFS_IFEXTENTS;
261 dp->i_df.if_flags |= XFS_IFINLINE;
262 dp->i_d.di_format = XFS_DINODE_FMT_LOCAL;
263 ASSERT(dp->i_df.if_bytes == 0);
264 xfs_idata_realloc(dp, size, XFS_DATA_FORK);
265
266 logflags |= XFS_ILOG_DDATA;
267 memcpy(dp->i_df.if_u1.if_data, dst, size);
268 dp->i_d.di_size = size;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700269 xfs_dir2_sf_check(args);
270out:
271 xfs_trans_log_inode(args->trans, dp, logflags);
Dave Chinnerb3f03ba2013-12-03 23:50:57 +1100272 kmem_free(dst);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700273 return error;
274}
275
276/*
277 * Add a name to a shortform directory.
278 * There are two algorithms, "easy" and "hard" which we decide on
279 * before changing anything.
280 * Convert to block form if necessary, if the new entry won't fit.
281 */
282int /* error */
283xfs_dir2_sf_addname(
284 xfs_da_args_t *args) /* operation arguments */
285{
Linus Torvalds1da177e2005-04-16 15:20:36 -0700286 xfs_inode_t *dp; /* incore directory inode */
287 int error; /* error return value */
288 int incr_isize; /* total change in size */
289 int new_isize; /* di_size after adding name */
290 int objchange; /* changing to 8-byte inodes */
Christoph Hellwig5bde1ba92005-11-02 15:06:18 +1100291 xfs_dir2_data_aoff_t offset = 0; /* offset for new entry */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700292 int pick; /* which algorithm to use */
Christoph Hellwigac8ba502011-07-08 14:35:13 +0200293 xfs_dir2_sf_hdr_t *sfp; /* shortform structure */
Christoph Hellwig5bde1ba92005-11-02 15:06:18 +1100294 xfs_dir2_sf_entry_t *sfep = NULL; /* shortform entry */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700295
Christoph Hellwig0b1b2132009-12-14 23:14:59 +0000296 trace_xfs_dir2_sf_addname(args);
297
Dave Chinner24513372014-06-25 14:58:08 +1000298 ASSERT(xfs_dir2_sf_lookup(args) == -ENOENT);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700299 dp = args->dp;
300 ASSERT(dp->i_df.if_flags & XFS_IFINLINE);
301 /*
302 * Make sure the shortform value has some of its header.
303 */
304 if (dp->i_d.di_size < offsetof(xfs_dir2_sf_hdr_t, parent)) {
305 ASSERT(XFS_FORCED_SHUTDOWN(dp->i_mount));
Dave Chinner24513372014-06-25 14:58:08 +1000306 return -EIO;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700307 }
308 ASSERT(dp->i_df.if_bytes == dp->i_d.di_size);
309 ASSERT(dp->i_df.if_u1.if_data != NULL);
Christoph Hellwigac8ba502011-07-08 14:35:13 +0200310 sfp = (xfs_dir2_sf_hdr_t *)dp->i_df.if_u1.if_data;
311 ASSERT(dp->i_d.di_size >= xfs_dir2_sf_hdr_size(sfp->i8count));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700312 /*
313 * Compute entry (and change in) size.
314 */
Eric Sandeen5e06d142014-04-14 19:07:23 +1000315 incr_isize = dp->d_ops->sf_entsize(sfp, args->namelen);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700316 objchange = 0;
Christoph Hellwigd5cf09b2014-07-30 09:12:05 +1000317
Linus Torvalds1da177e2005-04-16 15:20:36 -0700318 /*
319 * Do we have to change to 8 byte inodes?
320 */
Christoph Hellwigac8ba502011-07-08 14:35:13 +0200321 if (args->inumber > XFS_DIR2_MAX_SHORT_INUM && sfp->i8count == 0) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700322 /*
Eric Sandeen5e06d142014-04-14 19:07:23 +1000323 * Yes, adjust the inode size. old count + (parent + new)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700324 */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700325 incr_isize +=
Christoph Hellwigac8ba502011-07-08 14:35:13 +0200326 (sfp->count + 2) *
Linus Torvalds1da177e2005-04-16 15:20:36 -0700327 ((uint)sizeof(xfs_dir2_ino8_t) -
328 (uint)sizeof(xfs_dir2_ino4_t));
329 objchange = 1;
330 }
Christoph Hellwigd5cf09b2014-07-30 09:12:05 +1000331
Eric Sandeen5e06d142014-04-14 19:07:23 +1000332 new_isize = (int)dp->i_d.di_size + incr_isize;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700333 /*
334 * Won't fit as shortform any more (due to size),
335 * or the pick routine says it won't (due to offset values).
336 */
337 if (new_isize > XFS_IFORK_DSIZE(dp) ||
338 (pick =
339 xfs_dir2_sf_addname_pick(args, objchange, &sfep, &offset)) == 0) {
340 /*
341 * Just checking or no space reservation, it doesn't fit.
342 */
Barry Naujok6a178102008-05-21 16:42:05 +1000343 if ((args->op_flags & XFS_DA_OP_JUSTCHECK) || args->total == 0)
Dave Chinner24513372014-06-25 14:58:08 +1000344 return -ENOSPC;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700345 /*
346 * Convert to block form then add the name.
347 */
348 error = xfs_dir2_sf_to_block(args);
349 if (error)
350 return error;
351 return xfs_dir2_block_addname(args);
352 }
353 /*
354 * Just checking, it fits.
355 */
Barry Naujok6a178102008-05-21 16:42:05 +1000356 if (args->op_flags & XFS_DA_OP_JUSTCHECK)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700357 return 0;
358 /*
359 * Do it the easy way - just add it at the end.
360 */
361 if (pick == 1)
362 xfs_dir2_sf_addname_easy(args, sfep, offset, new_isize);
363 /*
364 * Do it the hard way - look for a place to insert the new entry.
365 * Convert to 8 byte inode numbers first if necessary.
366 */
367 else {
368 ASSERT(pick == 2);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700369 if (objchange)
370 xfs_dir2_sf_toino8(args);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700371 xfs_dir2_sf_addname_hard(args, objchange, new_isize);
372 }
373 xfs_trans_log_inode(args->trans, dp, XFS_ILOG_CORE | XFS_ILOG_DDATA);
374 return 0;
375}
376
377/*
378 * Add the new entry the "easy" way.
379 * This is copying the old directory and adding the new entry at the end.
380 * Since it's sorted by "offset" we need room after the last offset
381 * that's already there, and then room to convert to a block directory.
382 * This is already checked by the pick routine.
383 */
384static void
385xfs_dir2_sf_addname_easy(
386 xfs_da_args_t *args, /* operation arguments */
387 xfs_dir2_sf_entry_t *sfep, /* pointer to new entry */
388 xfs_dir2_data_aoff_t offset, /* offset to use for new ent */
389 int new_isize) /* new directory size */
390{
391 int byteoff; /* byte offset in sf dir */
392 xfs_inode_t *dp; /* incore directory inode */
Christoph Hellwigac8ba502011-07-08 14:35:13 +0200393 xfs_dir2_sf_hdr_t *sfp; /* shortform structure */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700394
395 dp = args->dp;
396
Christoph Hellwigac8ba502011-07-08 14:35:13 +0200397 sfp = (xfs_dir2_sf_hdr_t *)dp->i_df.if_u1.if_data;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700398 byteoff = (int)((char *)sfep - (char *)sfp);
399 /*
400 * Grow the in-inode space.
401 */
Dave Chinner32c54832013-10-29 22:11:46 +1100402 xfs_idata_realloc(dp, dp->d_ops->sf_entsize(sfp, args->namelen),
Dave Chinner0cb97762013-08-12 20:50:09 +1000403 XFS_DATA_FORK);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700404 /*
405 * Need to set up again due to realloc of the inode data.
406 */
Christoph Hellwigac8ba502011-07-08 14:35:13 +0200407 sfp = (xfs_dir2_sf_hdr_t *)dp->i_df.if_u1.if_data;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700408 sfep = (xfs_dir2_sf_entry_t *)((char *)sfp + byteoff);
409 /*
410 * Fill in the new entry.
411 */
412 sfep->namelen = args->namelen;
Christoph Hellwigbbaaf532007-06-28 16:43:50 +1000413 xfs_dir2_sf_put_offset(sfep, offset);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700414 memcpy(sfep->name, args->name, sfep->namelen);
Dave Chinner47401752013-10-29 22:11:47 +1100415 dp->d_ops->sf_put_ino(sfp, sfep, args->inumber);
416 dp->d_ops->sf_put_ftype(sfep, args->filetype);
Dave Chinner1c55cec2013-08-12 20:50:10 +1000417
Linus Torvalds1da177e2005-04-16 15:20:36 -0700418 /*
419 * Update the header and inode.
420 */
Christoph Hellwigac8ba502011-07-08 14:35:13 +0200421 sfp->count++;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700422 if (args->inumber > XFS_DIR2_MAX_SHORT_INUM)
Christoph Hellwigac8ba502011-07-08 14:35:13 +0200423 sfp->i8count++;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700424 dp->i_d.di_size = new_isize;
425 xfs_dir2_sf_check(args);
426}
427
428/*
429 * Add the new entry the "hard" way.
430 * The caller has already converted to 8 byte inode numbers if necessary,
431 * in which case we need to leave the i8count at 1.
432 * Find a hole that the new entry will fit into, and copy
433 * the first part of the entries, the new entry, and the last part of
434 * the entries.
435 */
436/* ARGSUSED */
437static void
438xfs_dir2_sf_addname_hard(
439 xfs_da_args_t *args, /* operation arguments */
440 int objchange, /* changing inode number size */
441 int new_isize) /* new directory size */
442{
443 int add_datasize; /* data size need for new ent */
444 char *buf; /* buffer for old */
445 xfs_inode_t *dp; /* incore directory inode */
446 int eof; /* reached end of old dir */
447 int nbytes; /* temp for byte copies */
448 xfs_dir2_data_aoff_t new_offset; /* next offset value */
449 xfs_dir2_data_aoff_t offset; /* current offset value */
450 int old_isize; /* previous di_size */
451 xfs_dir2_sf_entry_t *oldsfep; /* entry in original dir */
Christoph Hellwigac8ba502011-07-08 14:35:13 +0200452 xfs_dir2_sf_hdr_t *oldsfp; /* original shortform dir */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700453 xfs_dir2_sf_entry_t *sfep; /* entry in new dir */
Christoph Hellwigac8ba502011-07-08 14:35:13 +0200454 xfs_dir2_sf_hdr_t *sfp; /* new shortform dir */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700455
456 /*
457 * Copy the old directory to the stack buffer.
458 */
459 dp = args->dp;
460
Christoph Hellwigac8ba502011-07-08 14:35:13 +0200461 sfp = (xfs_dir2_sf_hdr_t *)dp->i_df.if_u1.if_data;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700462 old_isize = (int)dp->i_d.di_size;
463 buf = kmem_alloc(old_isize, KM_SLEEP);
Christoph Hellwigac8ba502011-07-08 14:35:13 +0200464 oldsfp = (xfs_dir2_sf_hdr_t *)buf;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700465 memcpy(oldsfp, sfp, old_isize);
466 /*
467 * Loop over the old directory finding the place we're going
468 * to insert the new entry.
469 * If it's going to end up at the end then oldsfep will point there.
470 */
Dave Chinner1c9a5b22013-10-30 09:15:02 +1100471 for (offset = dp->d_ops->data_first_offset,
Christoph Hellwigbbaaf532007-06-28 16:43:50 +1000472 oldsfep = xfs_dir2_sf_firstentry(oldsfp),
Dave Chinner9d23fc82013-10-29 22:11:48 +1100473 add_datasize = dp->d_ops->data_entsize(args->namelen),
Linus Torvalds1da177e2005-04-16 15:20:36 -0700474 eof = (char *)oldsfep == &buf[old_isize];
475 !eof;
Dave Chinner9d23fc82013-10-29 22:11:48 +1100476 offset = new_offset + dp->d_ops->data_entsize(oldsfep->namelen),
Dave Chinner32c54832013-10-29 22:11:46 +1100477 oldsfep = dp->d_ops->sf_nextentry(oldsfp, oldsfep),
Linus Torvalds1da177e2005-04-16 15:20:36 -0700478 eof = (char *)oldsfep == &buf[old_isize]) {
Christoph Hellwigbbaaf532007-06-28 16:43:50 +1000479 new_offset = xfs_dir2_sf_get_offset(oldsfep);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700480 if (offset + add_datasize <= new_offset)
481 break;
482 }
483 /*
484 * Get rid of the old directory, then allocate space for
485 * the new one. We do this so xfs_idata_realloc won't copy
486 * the data.
487 */
488 xfs_idata_realloc(dp, -old_isize, XFS_DATA_FORK);
489 xfs_idata_realloc(dp, new_isize, XFS_DATA_FORK);
490 /*
491 * Reset the pointer since the buffer was reallocated.
492 */
Christoph Hellwigac8ba502011-07-08 14:35:13 +0200493 sfp = (xfs_dir2_sf_hdr_t *)dp->i_df.if_u1.if_data;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700494 /*
495 * Copy the first part of the directory, including the header.
496 */
497 nbytes = (int)((char *)oldsfep - (char *)oldsfp);
498 memcpy(sfp, oldsfp, nbytes);
499 sfep = (xfs_dir2_sf_entry_t *)((char *)sfp + nbytes);
500 /*
501 * Fill in the new entry, and update the header counts.
502 */
503 sfep->namelen = args->namelen;
Christoph Hellwigbbaaf532007-06-28 16:43:50 +1000504 xfs_dir2_sf_put_offset(sfep, offset);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700505 memcpy(sfep->name, args->name, sfep->namelen);
Dave Chinner47401752013-10-29 22:11:47 +1100506 dp->d_ops->sf_put_ino(sfp, sfep, args->inumber);
507 dp->d_ops->sf_put_ftype(sfep, args->filetype);
Christoph Hellwigac8ba502011-07-08 14:35:13 +0200508 sfp->count++;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700509 if (args->inumber > XFS_DIR2_MAX_SHORT_INUM && !objchange)
Christoph Hellwigac8ba502011-07-08 14:35:13 +0200510 sfp->i8count++;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700511 /*
512 * If there's more left to copy, do that.
513 */
514 if (!eof) {
Dave Chinner32c54832013-10-29 22:11:46 +1100515 sfep = dp->d_ops->sf_nextentry(sfp, sfep);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700516 memcpy(sfep, oldsfep, old_isize - nbytes);
517 }
Denys Vlasenkof0e2d932008-05-19 16:31:57 +1000518 kmem_free(buf);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700519 dp->i_d.di_size = new_isize;
520 xfs_dir2_sf_check(args);
521}
522
523/*
524 * Decide if the new entry will fit at all.
525 * If it will fit, pick between adding the new entry to the end (easy)
526 * or somewhere else (hard).
527 * Return 0 (won't fit), 1 (easy), 2 (hard).
528 */
529/*ARGSUSED*/
530static int /* pick result */
531xfs_dir2_sf_addname_pick(
532 xfs_da_args_t *args, /* operation arguments */
533 int objchange, /* inode # size changes */
534 xfs_dir2_sf_entry_t **sfepp, /* out(1): new entry ptr */
535 xfs_dir2_data_aoff_t *offsetp) /* out(1): new offset */
536{
537 xfs_inode_t *dp; /* incore directory inode */
538 int holefit; /* found hole it will fit in */
539 int i; /* entry number */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700540 xfs_dir2_data_aoff_t offset; /* data block offset */
541 xfs_dir2_sf_entry_t *sfep; /* shortform entry */
Christoph Hellwigac8ba502011-07-08 14:35:13 +0200542 xfs_dir2_sf_hdr_t *sfp; /* shortform structure */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700543 int size; /* entry's data size */
544 int used; /* data bytes used */
545
546 dp = args->dp;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700547
Christoph Hellwigac8ba502011-07-08 14:35:13 +0200548 sfp = (xfs_dir2_sf_hdr_t *)dp->i_df.if_u1.if_data;
Dave Chinner9d23fc82013-10-29 22:11:48 +1100549 size = dp->d_ops->data_entsize(args->namelen);
Dave Chinner1c9a5b22013-10-30 09:15:02 +1100550 offset = dp->d_ops->data_first_offset;
Christoph Hellwigbbaaf532007-06-28 16:43:50 +1000551 sfep = xfs_dir2_sf_firstentry(sfp);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700552 holefit = 0;
553 /*
554 * Loop over sf entries.
555 * Keep track of data offset and whether we've seen a place
556 * to insert the new entry.
557 */
Christoph Hellwigac8ba502011-07-08 14:35:13 +0200558 for (i = 0; i < sfp->count; i++) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700559 if (!holefit)
Christoph Hellwigbbaaf532007-06-28 16:43:50 +1000560 holefit = offset + size <= xfs_dir2_sf_get_offset(sfep);
561 offset = xfs_dir2_sf_get_offset(sfep) +
Dave Chinner9d23fc82013-10-29 22:11:48 +1100562 dp->d_ops->data_entsize(sfep->namelen);
Dave Chinner32c54832013-10-29 22:11:46 +1100563 sfep = dp->d_ops->sf_nextentry(sfp, sfep);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700564 }
565 /*
566 * Calculate data bytes used excluding the new entry, if this
567 * was a data block (block form directory).
568 */
569 used = offset +
Christoph Hellwigac8ba502011-07-08 14:35:13 +0200570 (sfp->count + 3) * (uint)sizeof(xfs_dir2_leaf_entry_t) +
Linus Torvalds1da177e2005-04-16 15:20:36 -0700571 (uint)sizeof(xfs_dir2_block_tail_t);
572 /*
573 * If it won't fit in a block form then we can't insert it,
574 * we'll go back, convert to block, then try the insert and convert
575 * to leaf.
576 */
Dave Chinner8f661932014-06-06 15:15:59 +1000577 if (used + (holefit ? 0 : size) > args->geo->blksize)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700578 return 0;
579 /*
580 * If changing the inode number size, do it the hard way.
581 */
Christoph Hellwigd5cf09b2014-07-30 09:12:05 +1000582 if (objchange)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700583 return 2;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700584 /*
585 * If it won't fit at the end then do it the hard way (use the hole).
586 */
Dave Chinner8f661932014-06-06 15:15:59 +1000587 if (used + size > args->geo->blksize)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700588 return 2;
589 /*
590 * Do it the easy way.
591 */
592 *sfepp = sfep;
593 *offsetp = offset;
594 return 1;
595}
596
597#ifdef DEBUG
598/*
599 * Check consistency of shortform directory, assert if bad.
600 */
601static void
602xfs_dir2_sf_check(
603 xfs_da_args_t *args) /* operation arguments */
604{
605 xfs_inode_t *dp; /* incore directory inode */
606 int i; /* entry number */
607 int i8count; /* number of big inode#s */
608 xfs_ino_t ino; /* entry inode number */
609 int offset; /* data offset */
610 xfs_dir2_sf_entry_t *sfep; /* shortform dir entry */
Christoph Hellwigac8ba502011-07-08 14:35:13 +0200611 xfs_dir2_sf_hdr_t *sfp; /* shortform structure */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700612
613 dp = args->dp;
614
Christoph Hellwigac8ba502011-07-08 14:35:13 +0200615 sfp = (xfs_dir2_sf_hdr_t *)dp->i_df.if_u1.if_data;
Dave Chinner1c9a5b22013-10-30 09:15:02 +1100616 offset = dp->d_ops->data_first_offset;
Dave Chinner47401752013-10-29 22:11:47 +1100617 ino = dp->d_ops->sf_get_parent_ino(sfp);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700618 i8count = ino > XFS_DIR2_MAX_SHORT_INUM;
619
Christoph Hellwigbbaaf532007-06-28 16:43:50 +1000620 for (i = 0, sfep = xfs_dir2_sf_firstentry(sfp);
Christoph Hellwigac8ba502011-07-08 14:35:13 +0200621 i < sfp->count;
Dave Chinner32c54832013-10-29 22:11:46 +1100622 i++, sfep = dp->d_ops->sf_nextentry(sfp, sfep)) {
Christoph Hellwigbbaaf532007-06-28 16:43:50 +1000623 ASSERT(xfs_dir2_sf_get_offset(sfep) >= offset);
Dave Chinner47401752013-10-29 22:11:47 +1100624 ino = dp->d_ops->sf_get_ino(sfp, sfep);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700625 i8count += ino > XFS_DIR2_MAX_SHORT_INUM;
626 offset =
Christoph Hellwigbbaaf532007-06-28 16:43:50 +1000627 xfs_dir2_sf_get_offset(sfep) +
Dave Chinner9d23fc82013-10-29 22:11:48 +1100628 dp->d_ops->data_entsize(sfep->namelen);
Dave Chinner47401752013-10-29 22:11:47 +1100629 ASSERT(dp->d_ops->sf_get_ftype(sfep) < XFS_DIR3_FT_MAX);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700630 }
Christoph Hellwigac8ba502011-07-08 14:35:13 +0200631 ASSERT(i8count == sfp->i8count);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700632 ASSERT((char *)sfep - (char *)sfp == dp->i_d.di_size);
633 ASSERT(offset +
Christoph Hellwigac8ba502011-07-08 14:35:13 +0200634 (sfp->count + 2) * (uint)sizeof(xfs_dir2_leaf_entry_t) +
Dave Chinner8f661932014-06-06 15:15:59 +1000635 (uint)sizeof(xfs_dir2_block_tail_t) <= args->geo->blksize);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700636}
637#endif /* DEBUG */
638
639/*
640 * Create a new (shortform) directory.
641 */
642int /* error, always 0 */
643xfs_dir2_sf_create(
644 xfs_da_args_t *args, /* operation arguments */
645 xfs_ino_t pino) /* parent inode number */
646{
647 xfs_inode_t *dp; /* incore directory inode */
648 int i8count; /* parent inode is an 8-byte number */
Christoph Hellwigac8ba502011-07-08 14:35:13 +0200649 xfs_dir2_sf_hdr_t *sfp; /* shortform structure */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700650 int size; /* directory size */
651
Christoph Hellwig0b1b2132009-12-14 23:14:59 +0000652 trace_xfs_dir2_sf_create(args);
653
Linus Torvalds1da177e2005-04-16 15:20:36 -0700654 dp = args->dp;
655
656 ASSERT(dp != NULL);
657 ASSERT(dp->i_d.di_size == 0);
658 /*
659 * If it's currently a zero-length extent file,
660 * convert it to local format.
661 */
662 if (dp->i_d.di_format == XFS_DINODE_FMT_EXTENTS) {
663 dp->i_df.if_flags &= ~XFS_IFEXTENTS; /* just in case */
664 dp->i_d.di_format = XFS_DINODE_FMT_LOCAL;
665 xfs_trans_log_inode(args->trans, dp, XFS_ILOG_CORE);
666 dp->i_df.if_flags |= XFS_IFINLINE;
667 }
668 ASSERT(dp->i_df.if_flags & XFS_IFINLINE);
669 ASSERT(dp->i_df.if_bytes == 0);
670 i8count = pino > XFS_DIR2_MAX_SHORT_INUM;
Christoph Hellwigbbaaf532007-06-28 16:43:50 +1000671 size = xfs_dir2_sf_hdr_size(i8count);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700672 /*
673 * Make a buffer for the data.
674 */
675 xfs_idata_realloc(dp, size, XFS_DATA_FORK);
676 /*
677 * Fill in the header,
678 */
Christoph Hellwigac8ba502011-07-08 14:35:13 +0200679 sfp = (xfs_dir2_sf_hdr_t *)dp->i_df.if_u1.if_data;
680 sfp->i8count = i8count;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700681 /*
682 * Now can put in the inode number, since i8count is set.
683 */
Dave Chinner47401752013-10-29 22:11:47 +1100684 dp->d_ops->sf_put_parent_ino(sfp, pino);
Christoph Hellwigac8ba502011-07-08 14:35:13 +0200685 sfp->count = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700686 dp->i_d.di_size = size;
687 xfs_dir2_sf_check(args);
688 xfs_trans_log_inode(args->trans, dp, XFS_ILOG_CORE | XFS_ILOG_DDATA);
689 return 0;
690}
691
Linus Torvalds1da177e2005-04-16 15:20:36 -0700692/*
693 * Lookup an entry in a shortform directory.
694 * Returns EEXIST if found, ENOENT if not found.
695 */
696int /* error */
697xfs_dir2_sf_lookup(
698 xfs_da_args_t *args) /* operation arguments */
699{
700 xfs_inode_t *dp; /* incore directory inode */
701 int i; /* entry index */
Barry Naujok384f3ce2008-05-21 16:58:22 +1000702 int error;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700703 xfs_dir2_sf_entry_t *sfep; /* shortform directory entry */
Christoph Hellwigac8ba502011-07-08 14:35:13 +0200704 xfs_dir2_sf_hdr_t *sfp; /* shortform structure */
Barry Naujok5163f952008-05-21 16:41:01 +1000705 enum xfs_dacmp cmp; /* comparison result */
Barry Naujok384f3ce2008-05-21 16:58:22 +1000706 xfs_dir2_sf_entry_t *ci_sfep; /* case-insens. entry */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700707
Christoph Hellwig0b1b2132009-12-14 23:14:59 +0000708 trace_xfs_dir2_sf_lookup(args);
709
Linus Torvalds1da177e2005-04-16 15:20:36 -0700710 xfs_dir2_sf_check(args);
711 dp = args->dp;
712
713 ASSERT(dp->i_df.if_flags & XFS_IFINLINE);
714 /*
715 * Bail out if the directory is way too short.
716 */
717 if (dp->i_d.di_size < offsetof(xfs_dir2_sf_hdr_t, parent)) {
718 ASSERT(XFS_FORCED_SHUTDOWN(dp->i_mount));
Dave Chinner24513372014-06-25 14:58:08 +1000719 return -EIO;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700720 }
721 ASSERT(dp->i_df.if_bytes == dp->i_d.di_size);
722 ASSERT(dp->i_df.if_u1.if_data != NULL);
Christoph Hellwigac8ba502011-07-08 14:35:13 +0200723 sfp = (xfs_dir2_sf_hdr_t *)dp->i_df.if_u1.if_data;
724 ASSERT(dp->i_d.di_size >= xfs_dir2_sf_hdr_size(sfp->i8count));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700725 /*
726 * Special case for .
727 */
728 if (args->namelen == 1 && args->name[0] == '.') {
729 args->inumber = dp->i_ino;
Barry Naujok5163f952008-05-21 16:41:01 +1000730 args->cmpresult = XFS_CMP_EXACT;
Dave Chinner1c55cec2013-08-12 20:50:10 +1000731 args->filetype = XFS_DIR3_FT_DIR;
Dave Chinner24513372014-06-25 14:58:08 +1000732 return -EEXIST;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700733 }
734 /*
735 * Special case for ..
736 */
737 if (args->namelen == 2 &&
738 args->name[0] == '.' && args->name[1] == '.') {
Dave Chinner47401752013-10-29 22:11:47 +1100739 args->inumber = dp->d_ops->sf_get_parent_ino(sfp);
Barry Naujok5163f952008-05-21 16:41:01 +1000740 args->cmpresult = XFS_CMP_EXACT;
Dave Chinner1c55cec2013-08-12 20:50:10 +1000741 args->filetype = XFS_DIR3_FT_DIR;
Dave Chinner24513372014-06-25 14:58:08 +1000742 return -EEXIST;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700743 }
744 /*
745 * Loop over all the entries trying to match ours.
746 */
Barry Naujok384f3ce2008-05-21 16:58:22 +1000747 ci_sfep = NULL;
Christoph Hellwigac8ba502011-07-08 14:35:13 +0200748 for (i = 0, sfep = xfs_dir2_sf_firstentry(sfp); i < sfp->count;
Dave Chinner32c54832013-10-29 22:11:46 +1100749 i++, sfep = dp->d_ops->sf_nextentry(sfp, sfep)) {
Barry Naujok5163f952008-05-21 16:41:01 +1000750 /*
751 * Compare name and if it's an exact match, return the inode
752 * number. If it's the first case-insensitive match, store the
753 * inode number and continue looking for an exact match.
754 */
755 cmp = dp->i_mount->m_dirnameops->compname(args, sfep->name,
756 sfep->namelen);
757 if (cmp != XFS_CMP_DIFFERENT && cmp != args->cmpresult) {
758 args->cmpresult = cmp;
Dave Chinner47401752013-10-29 22:11:47 +1100759 args->inumber = dp->d_ops->sf_get_ino(sfp, sfep);
760 args->filetype = dp->d_ops->sf_get_ftype(sfep);
Barry Naujok5163f952008-05-21 16:41:01 +1000761 if (cmp == XFS_CMP_EXACT)
Dave Chinner24513372014-06-25 14:58:08 +1000762 return -EEXIST;
Barry Naujok384f3ce2008-05-21 16:58:22 +1000763 ci_sfep = sfep;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700764 }
765 }
Barry Naujok6a178102008-05-21 16:42:05 +1000766 ASSERT(args->op_flags & XFS_DA_OP_OKNOENT);
Barry Naujok5163f952008-05-21 16:41:01 +1000767 /*
768 * Here, we can only be doing a lookup (not a rename or replace).
Dave Chinner24513372014-06-25 14:58:08 +1000769 * If a case-insensitive match was not found, return -ENOENT.
Barry Naujok5163f952008-05-21 16:41:01 +1000770 */
Barry Naujok384f3ce2008-05-21 16:58:22 +1000771 if (!ci_sfep)
Dave Chinner24513372014-06-25 14:58:08 +1000772 return -ENOENT;
Barry Naujok384f3ce2008-05-21 16:58:22 +1000773 /* otherwise process the CI match as required by the caller */
774 error = xfs_dir_cilookup_result(args, ci_sfep->name, ci_sfep->namelen);
Eric Sandeenb474c7a2014-06-22 15:04:54 +1000775 return error;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700776}
777
778/*
779 * Remove an entry from a shortform directory.
780 */
781int /* error */
782xfs_dir2_sf_removename(
783 xfs_da_args_t *args)
784{
785 int byteoff; /* offset of removed entry */
786 xfs_inode_t *dp; /* incore directory inode */
787 int entsize; /* this entry's size */
788 int i; /* shortform entry index */
789 int newsize; /* new inode size */
790 int oldsize; /* old inode size */
791 xfs_dir2_sf_entry_t *sfep; /* shortform directory entry */
Christoph Hellwigac8ba502011-07-08 14:35:13 +0200792 xfs_dir2_sf_hdr_t *sfp; /* shortform structure */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700793
Christoph Hellwig0b1b2132009-12-14 23:14:59 +0000794 trace_xfs_dir2_sf_removename(args);
795
Linus Torvalds1da177e2005-04-16 15:20:36 -0700796 dp = args->dp;
797
798 ASSERT(dp->i_df.if_flags & XFS_IFINLINE);
799 oldsize = (int)dp->i_d.di_size;
800 /*
801 * Bail out if the directory is way too short.
802 */
803 if (oldsize < offsetof(xfs_dir2_sf_hdr_t, parent)) {
804 ASSERT(XFS_FORCED_SHUTDOWN(dp->i_mount));
Dave Chinner24513372014-06-25 14:58:08 +1000805 return -EIO;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700806 }
807 ASSERT(dp->i_df.if_bytes == oldsize);
808 ASSERT(dp->i_df.if_u1.if_data != NULL);
Christoph Hellwigac8ba502011-07-08 14:35:13 +0200809 sfp = (xfs_dir2_sf_hdr_t *)dp->i_df.if_u1.if_data;
810 ASSERT(oldsize >= xfs_dir2_sf_hdr_size(sfp->i8count));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700811 /*
812 * Loop over the old directory entries.
813 * Find the one we're deleting.
814 */
Christoph Hellwigac8ba502011-07-08 14:35:13 +0200815 for (i = 0, sfep = xfs_dir2_sf_firstentry(sfp); i < sfp->count;
Dave Chinner32c54832013-10-29 22:11:46 +1100816 i++, sfep = dp->d_ops->sf_nextentry(sfp, sfep)) {
Barry Naujok5163f952008-05-21 16:41:01 +1000817 if (xfs_da_compname(args, sfep->name, sfep->namelen) ==
818 XFS_CMP_EXACT) {
Dave Chinner47401752013-10-29 22:11:47 +1100819 ASSERT(dp->d_ops->sf_get_ino(sfp, sfep) ==
Christoph Hellwig8bc38782011-07-08 14:35:03 +0200820 args->inumber);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700821 break;
822 }
823 }
824 /*
825 * Didn't find it.
826 */
Christoph Hellwigac8ba502011-07-08 14:35:13 +0200827 if (i == sfp->count)
Dave Chinner24513372014-06-25 14:58:08 +1000828 return -ENOENT;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700829 /*
830 * Calculate sizes.
831 */
832 byteoff = (int)((char *)sfep - (char *)sfp);
Dave Chinner32c54832013-10-29 22:11:46 +1100833 entsize = dp->d_ops->sf_entsize(sfp, args->namelen);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700834 newsize = oldsize - entsize;
835 /*
836 * Copy the part if any after the removed entry, sliding it down.
837 */
838 if (byteoff + entsize < oldsize)
839 memmove((char *)sfp + byteoff, (char *)sfp + byteoff + entsize,
840 oldsize - (byteoff + entsize));
841 /*
842 * Fix up the header and file size.
843 */
Christoph Hellwigac8ba502011-07-08 14:35:13 +0200844 sfp->count--;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700845 dp->i_d.di_size = newsize;
846 /*
847 * Reallocate, making it smaller.
848 */
849 xfs_idata_realloc(dp, newsize - oldsize, XFS_DATA_FORK);
Christoph Hellwigac8ba502011-07-08 14:35:13 +0200850 sfp = (xfs_dir2_sf_hdr_t *)dp->i_df.if_u1.if_data;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700851 /*
852 * Are we changing inode number size?
853 */
854 if (args->inumber > XFS_DIR2_MAX_SHORT_INUM) {
Christoph Hellwigac8ba502011-07-08 14:35:13 +0200855 if (sfp->i8count == 1)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700856 xfs_dir2_sf_toino4(args);
857 else
Christoph Hellwigac8ba502011-07-08 14:35:13 +0200858 sfp->i8count--;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700859 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700860 xfs_dir2_sf_check(args);
861 xfs_trans_log_inode(args->trans, dp, XFS_ILOG_CORE | XFS_ILOG_DDATA);
862 return 0;
863}
864
865/*
866 * Replace the inode number of an entry in a shortform directory.
867 */
868int /* error */
869xfs_dir2_sf_replace(
870 xfs_da_args_t *args) /* operation arguments */
871{
872 xfs_inode_t *dp; /* incore directory inode */
873 int i; /* entry index */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700874 xfs_ino_t ino=0; /* entry old inode number */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700875 int i8elevated; /* sf_toino8 set i8count=1 */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700876 xfs_dir2_sf_entry_t *sfep; /* shortform directory entry */
Christoph Hellwigac8ba502011-07-08 14:35:13 +0200877 xfs_dir2_sf_hdr_t *sfp; /* shortform structure */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700878
Christoph Hellwig0b1b2132009-12-14 23:14:59 +0000879 trace_xfs_dir2_sf_replace(args);
880
Linus Torvalds1da177e2005-04-16 15:20:36 -0700881 dp = args->dp;
882
883 ASSERT(dp->i_df.if_flags & XFS_IFINLINE);
884 /*
885 * Bail out if the shortform directory is way too small.
886 */
887 if (dp->i_d.di_size < offsetof(xfs_dir2_sf_hdr_t, parent)) {
888 ASSERT(XFS_FORCED_SHUTDOWN(dp->i_mount));
Dave Chinner24513372014-06-25 14:58:08 +1000889 return -EIO;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700890 }
891 ASSERT(dp->i_df.if_bytes == dp->i_d.di_size);
892 ASSERT(dp->i_df.if_u1.if_data != NULL);
Christoph Hellwigac8ba502011-07-08 14:35:13 +0200893 sfp = (xfs_dir2_sf_hdr_t *)dp->i_df.if_u1.if_data;
894 ASSERT(dp->i_d.di_size >= xfs_dir2_sf_hdr_size(sfp->i8count));
Christoph Hellwigd5cf09b2014-07-30 09:12:05 +1000895
Linus Torvalds1da177e2005-04-16 15:20:36 -0700896 /*
897 * New inode number is large, and need to convert to 8-byte inodes.
898 */
Christoph Hellwigac8ba502011-07-08 14:35:13 +0200899 if (args->inumber > XFS_DIR2_MAX_SHORT_INUM && sfp->i8count == 0) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700900 int error; /* error return value */
901 int newsize; /* new inode size */
902
903 newsize =
904 dp->i_df.if_bytes +
Christoph Hellwigac8ba502011-07-08 14:35:13 +0200905 (sfp->count + 1) *
Linus Torvalds1da177e2005-04-16 15:20:36 -0700906 ((uint)sizeof(xfs_dir2_ino8_t) -
907 (uint)sizeof(xfs_dir2_ino4_t));
908 /*
909 * Won't fit as shortform, convert to block then do replace.
910 */
911 if (newsize > XFS_IFORK_DSIZE(dp)) {
912 error = xfs_dir2_sf_to_block(args);
913 if (error) {
914 return error;
915 }
916 return xfs_dir2_block_replace(args);
917 }
918 /*
919 * Still fits, convert to 8-byte now.
920 */
921 xfs_dir2_sf_toino8(args);
922 i8elevated = 1;
Christoph Hellwigac8ba502011-07-08 14:35:13 +0200923 sfp = (xfs_dir2_sf_hdr_t *)dp->i_df.if_u1.if_data;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700924 } else
925 i8elevated = 0;
Christoph Hellwigd5cf09b2014-07-30 09:12:05 +1000926
Linus Torvalds1da177e2005-04-16 15:20:36 -0700927 ASSERT(args->namelen != 1 || args->name[0] != '.');
928 /*
929 * Replace ..'s entry.
930 */
931 if (args->namelen == 2 &&
932 args->name[0] == '.' && args->name[1] == '.') {
Dave Chinner47401752013-10-29 22:11:47 +1100933 ino = dp->d_ops->sf_get_parent_ino(sfp);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700934 ASSERT(args->inumber != ino);
Dave Chinner47401752013-10-29 22:11:47 +1100935 dp->d_ops->sf_put_parent_ino(sfp, args->inumber);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700936 }
937 /*
938 * Normal entry, look for the name.
939 */
940 else {
Dave Chinner0cb97762013-08-12 20:50:09 +1000941 for (i = 0, sfep = xfs_dir2_sf_firstentry(sfp); i < sfp->count;
Dave Chinner32c54832013-10-29 22:11:46 +1100942 i++, sfep = dp->d_ops->sf_nextentry(sfp, sfep)) {
Barry Naujok5163f952008-05-21 16:41:01 +1000943 if (xfs_da_compname(args, sfep->name, sfep->namelen) ==
944 XFS_CMP_EXACT) {
Dave Chinner47401752013-10-29 22:11:47 +1100945 ino = dp->d_ops->sf_get_ino(sfp, sfep);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700946 ASSERT(args->inumber != ino);
Dave Chinner47401752013-10-29 22:11:47 +1100947 dp->d_ops->sf_put_ino(sfp, sfep, args->inumber);
948 dp->d_ops->sf_put_ftype(sfep, args->filetype);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700949 break;
950 }
951 }
952 /*
953 * Didn't find it.
954 */
Christoph Hellwigac8ba502011-07-08 14:35:13 +0200955 if (i == sfp->count) {
Barry Naujok6a178102008-05-21 16:42:05 +1000956 ASSERT(args->op_flags & XFS_DA_OP_OKNOENT);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700957 if (i8elevated)
958 xfs_dir2_sf_toino4(args);
Dave Chinner24513372014-06-25 14:58:08 +1000959 return -ENOENT;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700960 }
961 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700962 /*
963 * See if the old number was large, the new number is small.
964 */
965 if (ino > XFS_DIR2_MAX_SHORT_INUM &&
966 args->inumber <= XFS_DIR2_MAX_SHORT_INUM) {
967 /*
968 * And the old count was one, so need to convert to small.
969 */
Christoph Hellwigac8ba502011-07-08 14:35:13 +0200970 if (sfp->i8count == 1)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700971 xfs_dir2_sf_toino4(args);
972 else
Christoph Hellwigac8ba502011-07-08 14:35:13 +0200973 sfp->i8count--;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700974 }
975 /*
976 * See if the old number was small, the new number is large.
977 */
978 if (ino <= XFS_DIR2_MAX_SHORT_INUM &&
979 args->inumber > XFS_DIR2_MAX_SHORT_INUM) {
980 /*
981 * add to the i8count unless we just converted to 8-byte
982 * inodes (which does an implied i8count = 1)
983 */
Christoph Hellwigac8ba502011-07-08 14:35:13 +0200984 ASSERT(sfp->i8count != 0);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700985 if (!i8elevated)
Christoph Hellwigac8ba502011-07-08 14:35:13 +0200986 sfp->i8count++;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700987 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700988 xfs_dir2_sf_check(args);
989 xfs_trans_log_inode(args->trans, dp, XFS_ILOG_DDATA);
990 return 0;
991}
992
Linus Torvalds1da177e2005-04-16 15:20:36 -0700993/*
994 * Convert from 8-byte inode numbers to 4-byte inode numbers.
995 * The last 8-byte inode number is gone, but the count is still 1.
996 */
997static void
998xfs_dir2_sf_toino4(
999 xfs_da_args_t *args) /* operation arguments */
1000{
1001 char *buf; /* old dir's buffer */
1002 xfs_inode_t *dp; /* incore directory inode */
1003 int i; /* entry index */
Linus Torvalds1da177e2005-04-16 15:20:36 -07001004 int newsize; /* new inode size */
1005 xfs_dir2_sf_entry_t *oldsfep; /* old sf entry */
Christoph Hellwigac8ba502011-07-08 14:35:13 +02001006 xfs_dir2_sf_hdr_t *oldsfp; /* old sf directory */
Linus Torvalds1da177e2005-04-16 15:20:36 -07001007 int oldsize; /* old inode size */
1008 xfs_dir2_sf_entry_t *sfep; /* new sf entry */
Christoph Hellwigac8ba502011-07-08 14:35:13 +02001009 xfs_dir2_sf_hdr_t *sfp; /* new sf directory */
Linus Torvalds1da177e2005-04-16 15:20:36 -07001010
Christoph Hellwig0b1b2132009-12-14 23:14:59 +00001011 trace_xfs_dir2_sf_toino4(args);
1012
Linus Torvalds1da177e2005-04-16 15:20:36 -07001013 dp = args->dp;
1014
1015 /*
1016 * Copy the old directory to the buffer.
1017 * Then nuke it from the inode, and add the new buffer to the inode.
1018 * Don't want xfs_idata_realloc copying the data here.
1019 */
1020 oldsize = dp->i_df.if_bytes;
1021 buf = kmem_alloc(oldsize, KM_SLEEP);
Christoph Hellwigac8ba502011-07-08 14:35:13 +02001022 oldsfp = (xfs_dir2_sf_hdr_t *)dp->i_df.if_u1.if_data;
1023 ASSERT(oldsfp->i8count == 1);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001024 memcpy(buf, oldsfp, oldsize);
1025 /*
1026 * Compute the new inode size.
1027 */
1028 newsize =
1029 oldsize -
Christoph Hellwigac8ba502011-07-08 14:35:13 +02001030 (oldsfp->count + 1) *
Linus Torvalds1da177e2005-04-16 15:20:36 -07001031 ((uint)sizeof(xfs_dir2_ino8_t) - (uint)sizeof(xfs_dir2_ino4_t));
1032 xfs_idata_realloc(dp, -oldsize, XFS_DATA_FORK);
1033 xfs_idata_realloc(dp, newsize, XFS_DATA_FORK);
1034 /*
1035 * Reset our pointers, the data has moved.
1036 */
Christoph Hellwigac8ba502011-07-08 14:35:13 +02001037 oldsfp = (xfs_dir2_sf_hdr_t *)buf;
1038 sfp = (xfs_dir2_sf_hdr_t *)dp->i_df.if_u1.if_data;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001039 /*
1040 * Fill in the new header.
1041 */
Christoph Hellwigac8ba502011-07-08 14:35:13 +02001042 sfp->count = oldsfp->count;
1043 sfp->i8count = 0;
Dave Chinner47401752013-10-29 22:11:47 +11001044 dp->d_ops->sf_put_parent_ino(sfp, dp->d_ops->sf_get_parent_ino(oldsfp));
Linus Torvalds1da177e2005-04-16 15:20:36 -07001045 /*
1046 * Copy the entries field by field.
1047 */
Christoph Hellwigbbaaf532007-06-28 16:43:50 +10001048 for (i = 0, sfep = xfs_dir2_sf_firstentry(sfp),
1049 oldsfep = xfs_dir2_sf_firstentry(oldsfp);
Christoph Hellwigac8ba502011-07-08 14:35:13 +02001050 i < sfp->count;
Dave Chinner32c54832013-10-29 22:11:46 +11001051 i++, sfep = dp->d_ops->sf_nextentry(sfp, sfep),
1052 oldsfep = dp->d_ops->sf_nextentry(oldsfp, oldsfep)) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07001053 sfep->namelen = oldsfep->namelen;
1054 sfep->offset = oldsfep->offset;
1055 memcpy(sfep->name, oldsfep->name, sfep->namelen);
Dave Chinner47401752013-10-29 22:11:47 +11001056 dp->d_ops->sf_put_ino(sfp, sfep,
1057 dp->d_ops->sf_get_ino(oldsfp, oldsfep));
1058 dp->d_ops->sf_put_ftype(sfep, dp->d_ops->sf_get_ftype(oldsfep));
Linus Torvalds1da177e2005-04-16 15:20:36 -07001059 }
1060 /*
1061 * Clean up the inode.
1062 */
Denys Vlasenkof0e2d932008-05-19 16:31:57 +10001063 kmem_free(buf);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001064 dp->i_d.di_size = newsize;
1065 xfs_trans_log_inode(args->trans, dp, XFS_ILOG_CORE | XFS_ILOG_DDATA);
1066}
1067
1068/*
Eric Sandeen5e06d142014-04-14 19:07:23 +10001069 * Convert existing entries from 4-byte inode numbers to 8-byte inode numbers.
1070 * The new entry w/ an 8-byte inode number is not there yet; we leave with
1071 * i8count set to 1, but no corresponding 8-byte entry.
Linus Torvalds1da177e2005-04-16 15:20:36 -07001072 */
1073static void
1074xfs_dir2_sf_toino8(
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 Torvalds1da177e2005-04-16 15:20:36 -07001080 int newsize; /* new inode size */
1081 xfs_dir2_sf_entry_t *oldsfep; /* old sf entry */
Christoph Hellwigac8ba502011-07-08 14:35:13 +02001082 xfs_dir2_sf_hdr_t *oldsfp; /* old sf directory */
Linus Torvalds1da177e2005-04-16 15:20:36 -07001083 int oldsize; /* old inode size */
1084 xfs_dir2_sf_entry_t *sfep; /* new sf entry */
Christoph Hellwigac8ba502011-07-08 14:35:13 +02001085 xfs_dir2_sf_hdr_t *sfp; /* new sf directory */
Linus Torvalds1da177e2005-04-16 15:20:36 -07001086
Christoph Hellwig0b1b2132009-12-14 23:14:59 +00001087 trace_xfs_dir2_sf_toino8(args);
1088
Linus Torvalds1da177e2005-04-16 15:20:36 -07001089 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 Hellwigac8ba502011-07-08 14:35:13 +02001098 oldsfp = (xfs_dir2_sf_hdr_t *)dp->i_df.if_u1.if_data;
1099 ASSERT(oldsfp->i8count == 0);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001100 memcpy(buf, oldsfp, oldsize);
1101 /*
Eric Sandeen5e06d142014-04-14 19:07:23 +10001102 * Compute the new inode size (nb: entry count + 1 for parent)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001103 */
1104 newsize =
1105 oldsize +
Christoph Hellwigac8ba502011-07-08 14:35:13 +02001106 (oldsfp->count + 1) *
Linus Torvalds1da177e2005-04-16 15:20:36 -07001107 ((uint)sizeof(xfs_dir2_ino8_t) - (uint)sizeof(xfs_dir2_ino4_t));
1108 xfs_idata_realloc(dp, -oldsize, XFS_DATA_FORK);
1109 xfs_idata_realloc(dp, newsize, XFS_DATA_FORK);
1110 /*
1111 * Reset our pointers, the data has moved.
1112 */
Christoph Hellwigac8ba502011-07-08 14:35:13 +02001113 oldsfp = (xfs_dir2_sf_hdr_t *)buf;
1114 sfp = (xfs_dir2_sf_hdr_t *)dp->i_df.if_u1.if_data;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001115 /*
1116 * Fill in the new header.
1117 */
Christoph Hellwigac8ba502011-07-08 14:35:13 +02001118 sfp->count = oldsfp->count;
1119 sfp->i8count = 1;
Dave Chinner47401752013-10-29 22:11:47 +11001120 dp->d_ops->sf_put_parent_ino(sfp, dp->d_ops->sf_get_parent_ino(oldsfp));
Linus Torvalds1da177e2005-04-16 15:20:36 -07001121 /*
1122 * Copy the entries field by field.
1123 */
Christoph Hellwigbbaaf532007-06-28 16:43:50 +10001124 for (i = 0, sfep = xfs_dir2_sf_firstentry(sfp),
1125 oldsfep = xfs_dir2_sf_firstentry(oldsfp);
Christoph Hellwigac8ba502011-07-08 14:35:13 +02001126 i < sfp->count;
Dave Chinner32c54832013-10-29 22:11:46 +11001127 i++, sfep = dp->d_ops->sf_nextentry(sfp, sfep),
1128 oldsfep = dp->d_ops->sf_nextentry(oldsfp, oldsfep)) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07001129 sfep->namelen = oldsfep->namelen;
1130 sfep->offset = oldsfep->offset;
1131 memcpy(sfep->name, oldsfep->name, sfep->namelen);
Dave Chinner47401752013-10-29 22:11:47 +11001132 dp->d_ops->sf_put_ino(sfp, sfep,
1133 dp->d_ops->sf_get_ino(oldsfp, oldsfep));
1134 dp->d_ops->sf_put_ftype(sfep, dp->d_ops->sf_get_ftype(oldsfep));
Linus Torvalds1da177e2005-04-16 15:20:36 -07001135 }
1136 /*
1137 * Clean up the inode.
1138 */
Denys Vlasenkof0e2d932008-05-19 16:31:57 +10001139 kmem_free(buf);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001140 dp->i_d.di_size = newsize;
1141 xfs_trans_log_inode(args->trans, dp, XFS_ILOG_CORE | XFS_ILOG_DDATA);
1142}