10b61f8a4SDave Chinner // SPDX-License-Identifier: GPL-2.0
230f712c9SDave Chinner /*
330f712c9SDave Chinner * Copyright (c) 2000-2003,2005 Silicon Graphics, Inc.
430f712c9SDave Chinner * Copyright (c) 2013 Red Hat, Inc.
530f712c9SDave Chinner * All Rights Reserved.
630f712c9SDave Chinner */
730f712c9SDave Chinner #include "xfs.h"
830f712c9SDave Chinner #include "xfs_fs.h"
95467b34bSDarrick J. Wong #include "xfs_shared.h"
1030f712c9SDave Chinner #include "xfs_format.h"
1130f712c9SDave Chinner #include "xfs_log_format.h"
1230f712c9SDave Chinner #include "xfs_trans_resv.h"
1330f712c9SDave Chinner #include "xfs_mount.h"
1430f712c9SDave Chinner #include "xfs_inode.h"
1530f712c9SDave Chinner #include "xfs_bmap.h"
1630f712c9SDave Chinner #include "xfs_dir2.h"
1730f712c9SDave Chinner #include "xfs_dir2_priv.h"
1830f712c9SDave Chinner #include "xfs_error.h"
1930f712c9SDave Chinner #include "xfs_trace.h"
2030f712c9SDave Chinner #include "xfs_trans.h"
2130f712c9SDave Chinner #include "xfs_buf_item.h"
2230f712c9SDave Chinner
2330f712c9SDave Chinner /*
2430f712c9SDave Chinner * Local function declarations.
2530f712c9SDave Chinner */
2630f712c9SDave Chinner static int xfs_dir2_leaf_lookup_int(xfs_da_args_t *args, struct xfs_buf **lbpp,
27787b0893SChristoph Hellwig int *indexp, struct xfs_buf **dbpp,
28787b0893SChristoph Hellwig struct xfs_dir3_icleaf_hdr *leafhdr);
2930f712c9SDave Chinner static void xfs_dir3_leaf_log_bests(struct xfs_da_args *args,
3030f712c9SDave Chinner struct xfs_buf *bp, int first, int last);
3130f712c9SDave Chinner static void xfs_dir3_leaf_log_tail(struct xfs_da_args *args,
3230f712c9SDave Chinner struct xfs_buf *bp);
3330f712c9SDave Chinner
3451842556SChristoph Hellwig void
xfs_dir2_leaf_hdr_from_disk(struct xfs_mount * mp,struct xfs_dir3_icleaf_hdr * to,struct xfs_dir2_leaf * from)3551842556SChristoph Hellwig xfs_dir2_leaf_hdr_from_disk(
3651842556SChristoph Hellwig struct xfs_mount *mp,
3751842556SChristoph Hellwig struct xfs_dir3_icleaf_hdr *to,
3851842556SChristoph Hellwig struct xfs_dir2_leaf *from)
3951842556SChristoph Hellwig {
40ebd9027dSDave Chinner if (xfs_has_crc(mp)) {
4151842556SChristoph Hellwig struct xfs_dir3_leaf *from3 = (struct xfs_dir3_leaf *)from;
4251842556SChristoph Hellwig
4351842556SChristoph Hellwig to->forw = be32_to_cpu(from3->hdr.info.hdr.forw);
4451842556SChristoph Hellwig to->back = be32_to_cpu(from3->hdr.info.hdr.back);
4551842556SChristoph Hellwig to->magic = be16_to_cpu(from3->hdr.info.hdr.magic);
4651842556SChristoph Hellwig to->count = be16_to_cpu(from3->hdr.count);
4751842556SChristoph Hellwig to->stale = be16_to_cpu(from3->hdr.stale);
48787b0893SChristoph Hellwig to->ents = from3->__ents;
4951842556SChristoph Hellwig
5051842556SChristoph Hellwig ASSERT(to->magic == XFS_DIR3_LEAF1_MAGIC ||
5151842556SChristoph Hellwig to->magic == XFS_DIR3_LEAFN_MAGIC);
5251842556SChristoph Hellwig } else {
5351842556SChristoph Hellwig to->forw = be32_to_cpu(from->hdr.info.forw);
5451842556SChristoph Hellwig to->back = be32_to_cpu(from->hdr.info.back);
5551842556SChristoph Hellwig to->magic = be16_to_cpu(from->hdr.info.magic);
5651842556SChristoph Hellwig to->count = be16_to_cpu(from->hdr.count);
5751842556SChristoph Hellwig to->stale = be16_to_cpu(from->hdr.stale);
58787b0893SChristoph Hellwig to->ents = from->__ents;
5951842556SChristoph Hellwig
6051842556SChristoph Hellwig ASSERT(to->magic == XFS_DIR2_LEAF1_MAGIC ||
6151842556SChristoph Hellwig to->magic == XFS_DIR2_LEAFN_MAGIC);
6251842556SChristoph Hellwig }
6351842556SChristoph Hellwig }
6451842556SChristoph Hellwig
65163fbbb3SChristoph Hellwig void
xfs_dir2_leaf_hdr_to_disk(struct xfs_mount * mp,struct xfs_dir2_leaf * to,struct xfs_dir3_icleaf_hdr * from)66163fbbb3SChristoph Hellwig xfs_dir2_leaf_hdr_to_disk(
67163fbbb3SChristoph Hellwig struct xfs_mount *mp,
68163fbbb3SChristoph Hellwig struct xfs_dir2_leaf *to,
69163fbbb3SChristoph Hellwig struct xfs_dir3_icleaf_hdr *from)
70163fbbb3SChristoph Hellwig {
71ebd9027dSDave Chinner if (xfs_has_crc(mp)) {
72163fbbb3SChristoph Hellwig struct xfs_dir3_leaf *to3 = (struct xfs_dir3_leaf *)to;
73163fbbb3SChristoph Hellwig
74163fbbb3SChristoph Hellwig ASSERT(from->magic == XFS_DIR3_LEAF1_MAGIC ||
75163fbbb3SChristoph Hellwig from->magic == XFS_DIR3_LEAFN_MAGIC);
76163fbbb3SChristoph Hellwig
77163fbbb3SChristoph Hellwig to3->hdr.info.hdr.forw = cpu_to_be32(from->forw);
78163fbbb3SChristoph Hellwig to3->hdr.info.hdr.back = cpu_to_be32(from->back);
79163fbbb3SChristoph Hellwig to3->hdr.info.hdr.magic = cpu_to_be16(from->magic);
80163fbbb3SChristoph Hellwig to3->hdr.count = cpu_to_be16(from->count);
81163fbbb3SChristoph Hellwig to3->hdr.stale = cpu_to_be16(from->stale);
82163fbbb3SChristoph Hellwig } else {
83163fbbb3SChristoph Hellwig ASSERT(from->magic == XFS_DIR2_LEAF1_MAGIC ||
84163fbbb3SChristoph Hellwig from->magic == XFS_DIR2_LEAFN_MAGIC);
85163fbbb3SChristoph Hellwig
86163fbbb3SChristoph Hellwig to->hdr.info.forw = cpu_to_be32(from->forw);
87163fbbb3SChristoph Hellwig to->hdr.info.back = cpu_to_be32(from->back);
88163fbbb3SChristoph Hellwig to->hdr.info.magic = cpu_to_be16(from->magic);
89163fbbb3SChristoph Hellwig to->hdr.count = cpu_to_be16(from->count);
90163fbbb3SChristoph Hellwig to->hdr.stale = cpu_to_be16(from->stale);
91163fbbb3SChristoph Hellwig }
92163fbbb3SChristoph Hellwig }
93163fbbb3SChristoph Hellwig
9430f712c9SDave Chinner /*
9530f712c9SDave Chinner * Check the internal consistency of a leaf1 block.
9630f712c9SDave Chinner * Pop an assert if something is wrong.
9730f712c9SDave Chinner */
9830f712c9SDave Chinner #ifdef DEBUG
99a6a781a5SDarrick J. Wong static xfs_failaddr_t
xfs_dir3_leaf1_check(struct xfs_inode * dp,struct xfs_buf * bp)10030f712c9SDave Chinner xfs_dir3_leaf1_check(
10130f712c9SDave Chinner struct xfs_inode *dp,
10230f712c9SDave Chinner struct xfs_buf *bp)
10330f712c9SDave Chinner {
10430f712c9SDave Chinner struct xfs_dir2_leaf *leaf = bp->b_addr;
10530f712c9SDave Chinner struct xfs_dir3_icleaf_hdr leafhdr;
10630f712c9SDave Chinner
10751842556SChristoph Hellwig xfs_dir2_leaf_hdr_from_disk(dp->i_mount, &leafhdr, leaf);
10830f712c9SDave Chinner
10930f712c9SDave Chinner if (leafhdr.magic == XFS_DIR3_LEAF1_MAGIC) {
11030f712c9SDave Chinner struct xfs_dir3_leaf_hdr *leaf3 = bp->b_addr;
1119343ee76SDave Chinner if (be64_to_cpu(leaf3->info.blkno) != xfs_buf_daddr(bp))
112a6a781a5SDarrick J. Wong return __this_address;
11330f712c9SDave Chinner } else if (leafhdr.magic != XFS_DIR2_LEAF1_MAGIC)
114a6a781a5SDarrick J. Wong return __this_address;
11530f712c9SDave Chinner
1161fea323fSDave Chinner return xfs_dir3_leaf_check_int(dp->i_mount, &leafhdr, leaf, false);
11730f712c9SDave Chinner }
118a6a781a5SDarrick J. Wong
119a6a781a5SDarrick J. Wong static inline void
xfs_dir3_leaf_check(struct xfs_inode * dp,struct xfs_buf * bp)120a6a781a5SDarrick J. Wong xfs_dir3_leaf_check(
121a6a781a5SDarrick J. Wong struct xfs_inode *dp,
122a6a781a5SDarrick J. Wong struct xfs_buf *bp)
123a6a781a5SDarrick J. Wong {
124a6a781a5SDarrick J. Wong xfs_failaddr_t fa;
125a6a781a5SDarrick J. Wong
126a6a781a5SDarrick J. Wong fa = xfs_dir3_leaf1_check(dp, bp);
127a6a781a5SDarrick J. Wong if (!fa)
128a6a781a5SDarrick J. Wong return;
129a6a781a5SDarrick J. Wong xfs_corruption_error(__func__, XFS_ERRLEVEL_LOW, dp->i_mount,
1302551a530SDarrick J. Wong bp->b_addr, BBTOB(bp->b_length), __FILE__, __LINE__,
1312551a530SDarrick J. Wong fa);
132a6a781a5SDarrick J. Wong ASSERT(0);
133a6a781a5SDarrick J. Wong }
13430f712c9SDave Chinner #else
13530f712c9SDave Chinner #define xfs_dir3_leaf_check(dp, bp)
13630f712c9SDave Chinner #endif
13730f712c9SDave Chinner
138a6a781a5SDarrick J. Wong xfs_failaddr_t
xfs_dir3_leaf_check_int(struct xfs_mount * mp,struct xfs_dir3_icleaf_hdr * hdr,struct xfs_dir2_leaf * leaf,bool expensive_checking)13930f712c9SDave Chinner xfs_dir3_leaf_check_int(
14030f712c9SDave Chinner struct xfs_mount *mp,
14130f712c9SDave Chinner struct xfs_dir3_icleaf_hdr *hdr,
1421fea323fSDave Chinner struct xfs_dir2_leaf *leaf,
1431fea323fSDave Chinner bool expensive_checking)
14430f712c9SDave Chinner {
14523220fe2SChristoph Hellwig struct xfs_da_geometry *geo = mp->m_dir_geo;
14630f712c9SDave Chinner xfs_dir2_leaf_tail_t *ltp;
14730f712c9SDave Chinner int stale;
14830f712c9SDave Chinner int i;
149*13cf24e0SGuo Xuenan bool isleaf1 = (hdr->magic == XFS_DIR2_LEAF1_MAGIC ||
150*13cf24e0SGuo Xuenan hdr->magic == XFS_DIR3_LEAF1_MAGIC);
15130f712c9SDave Chinner
15230f712c9SDave Chinner ltp = xfs_dir2_leaf_tail_p(geo, leaf);
15330f712c9SDave Chinner
15430f712c9SDave Chinner /*
15530f712c9SDave Chinner * XXX (dgc): This value is not restrictive enough.
15630f712c9SDave Chinner * Should factor in the size of the bests table as well.
15713d2c10bSChristoph Hellwig * We can deduce a value for that from i_disk_size.
15830f712c9SDave Chinner */
159478c7835SChristoph Hellwig if (hdr->count > geo->leaf_max_ents)
160a6a781a5SDarrick J. Wong return __this_address;
16130f712c9SDave Chinner
16230f712c9SDave Chinner /* Leaves and bests don't overlap in leaf format. */
163*13cf24e0SGuo Xuenan if (isleaf1 &&
164787b0893SChristoph Hellwig (char *)&hdr->ents[hdr->count] > (char *)xfs_dir2_leaf_bests_p(ltp))
165a6a781a5SDarrick J. Wong return __this_address;
16630f712c9SDave Chinner
1671fea323fSDave Chinner if (!expensive_checking)
1681fea323fSDave Chinner return NULL;
1691fea323fSDave Chinner
17030f712c9SDave Chinner /* Check hash value order, count stale entries. */
17130f712c9SDave Chinner for (i = stale = 0; i < hdr->count; i++) {
17230f712c9SDave Chinner if (i + 1 < hdr->count) {
173787b0893SChristoph Hellwig if (be32_to_cpu(hdr->ents[i].hashval) >
174787b0893SChristoph Hellwig be32_to_cpu(hdr->ents[i + 1].hashval))
175a6a781a5SDarrick J. Wong return __this_address;
17630f712c9SDave Chinner }
177787b0893SChristoph Hellwig if (hdr->ents[i].address == cpu_to_be32(XFS_DIR2_NULL_DATAPTR))
17830f712c9SDave Chinner stale++;
179*13cf24e0SGuo Xuenan if (isleaf1 && xfs_dir2_dataptr_to_db(geo,
180*13cf24e0SGuo Xuenan be32_to_cpu(hdr->ents[i].address)) >=
181*13cf24e0SGuo Xuenan be32_to_cpu(ltp->bestcount))
182*13cf24e0SGuo Xuenan return __this_address;
18330f712c9SDave Chinner }
18430f712c9SDave Chinner if (hdr->stale != stale)
185a6a781a5SDarrick J. Wong return __this_address;
186a6a781a5SDarrick J. Wong return NULL;
18730f712c9SDave Chinner }
18830f712c9SDave Chinner
18930f712c9SDave Chinner /*
19030f712c9SDave Chinner * We verify the magic numbers before decoding the leaf header so that on debug
19130f712c9SDave Chinner * kernels we don't get assertion failures in xfs_dir3_leaf_hdr_from_disk() due
19230f712c9SDave Chinner * to incorrect magic numbers.
19330f712c9SDave Chinner */
194a6a781a5SDarrick J. Wong static xfs_failaddr_t
xfs_dir3_leaf_verify(struct xfs_buf * bp)19530f712c9SDave Chinner xfs_dir3_leaf_verify(
19609f42019SBrian Foster struct xfs_buf *bp)
19730f712c9SDave Chinner {
198dbd329f1SChristoph Hellwig struct xfs_mount *mp = bp->b_mount;
19923220fe2SChristoph Hellwig struct xfs_dir3_icleaf_hdr leafhdr;
2008764f983SBrian Foster xfs_failaddr_t fa;
20130f712c9SDave Chinner
2028764f983SBrian Foster fa = xfs_da3_blkinfo_verify(bp, bp->b_addr);
2038764f983SBrian Foster if (fa)
2048764f983SBrian Foster return fa;
20530f712c9SDave Chinner
20623220fe2SChristoph Hellwig xfs_dir2_leaf_hdr_from_disk(mp, &leafhdr, bp->b_addr);
2071fea323fSDave Chinner return xfs_dir3_leaf_check_int(mp, &leafhdr, bp->b_addr, true);
20830f712c9SDave Chinner }
20930f712c9SDave Chinner
21030f712c9SDave Chinner static void
xfs_dir3_leaf_read_verify(struct xfs_buf * bp)21109f42019SBrian Foster xfs_dir3_leaf_read_verify(
21209f42019SBrian Foster struct xfs_buf *bp)
21330f712c9SDave Chinner {
214dbd329f1SChristoph Hellwig struct xfs_mount *mp = bp->b_mount;
215bc1a09b8SDarrick J. Wong xfs_failaddr_t fa;
21630f712c9SDave Chinner
21738c26bfdSDave Chinner if (xfs_has_crc(mp) &&
21830f712c9SDave Chinner !xfs_buf_verify_cksum(bp, XFS_DIR3_LEAF_CRC_OFF))
219bc1a09b8SDarrick J. Wong xfs_verifier_error(bp, -EFSBADCRC, __this_address);
220bc1a09b8SDarrick J. Wong else {
22109f42019SBrian Foster fa = xfs_dir3_leaf_verify(bp);
222bc1a09b8SDarrick J. Wong if (fa)
223bc1a09b8SDarrick J. Wong xfs_verifier_error(bp, -EFSCORRUPTED, fa);
224bc1a09b8SDarrick J. Wong }
22530f712c9SDave Chinner }
22630f712c9SDave Chinner
22730f712c9SDave Chinner static void
xfs_dir3_leaf_write_verify(struct xfs_buf * bp)22809f42019SBrian Foster xfs_dir3_leaf_write_verify(
22909f42019SBrian Foster struct xfs_buf *bp)
23030f712c9SDave Chinner {
231dbd329f1SChristoph Hellwig struct xfs_mount *mp = bp->b_mount;
232fb1755a6SCarlos Maiolino struct xfs_buf_log_item *bip = bp->b_log_item;
23330f712c9SDave Chinner struct xfs_dir3_leaf_hdr *hdr3 = bp->b_addr;
234bc1a09b8SDarrick J. Wong xfs_failaddr_t fa;
23530f712c9SDave Chinner
23609f42019SBrian Foster fa = xfs_dir3_leaf_verify(bp);
237bc1a09b8SDarrick J. Wong if (fa) {
238bc1a09b8SDarrick J. Wong xfs_verifier_error(bp, -EFSCORRUPTED, fa);
23930f712c9SDave Chinner return;
24030f712c9SDave Chinner }
24130f712c9SDave Chinner
24238c26bfdSDave Chinner if (!xfs_has_crc(mp))
24330f712c9SDave Chinner return;
24430f712c9SDave Chinner
24530f712c9SDave Chinner if (bip)
24630f712c9SDave Chinner hdr3->info.lsn = cpu_to_be64(bip->bli_item.li_lsn);
24730f712c9SDave Chinner
24830f712c9SDave Chinner xfs_buf_update_cksum(bp, XFS_DIR3_LEAF_CRC_OFF);
24930f712c9SDave Chinner }
25030f712c9SDave Chinner
25130f712c9SDave Chinner const struct xfs_buf_ops xfs_dir3_leaf1_buf_ops = {
252233135b7SEric Sandeen .name = "xfs_dir3_leaf1",
25315baadf7SDarrick J. Wong .magic16 = { cpu_to_be16(XFS_DIR2_LEAF1_MAGIC),
25409f42019SBrian Foster cpu_to_be16(XFS_DIR3_LEAF1_MAGIC) },
25509f42019SBrian Foster .verify_read = xfs_dir3_leaf_read_verify,
25609f42019SBrian Foster .verify_write = xfs_dir3_leaf_write_verify,
25709f42019SBrian Foster .verify_struct = xfs_dir3_leaf_verify,
25830f712c9SDave Chinner };
25930f712c9SDave Chinner
26030f712c9SDave Chinner const struct xfs_buf_ops xfs_dir3_leafn_buf_ops = {
261233135b7SEric Sandeen .name = "xfs_dir3_leafn",
26215baadf7SDarrick J. Wong .magic16 = { cpu_to_be16(XFS_DIR2_LEAFN_MAGIC),
26309f42019SBrian Foster cpu_to_be16(XFS_DIR3_LEAFN_MAGIC) },
26409f42019SBrian Foster .verify_read = xfs_dir3_leaf_read_verify,
26509f42019SBrian Foster .verify_write = xfs_dir3_leaf_write_verify,
26609f42019SBrian Foster .verify_struct = xfs_dir3_leaf_verify,
26730f712c9SDave Chinner };
26830f712c9SDave Chinner
26926788097SDarrick J. Wong int
xfs_dir3_leaf_read(struct xfs_trans * tp,struct xfs_inode * dp,xfs_dablk_t fbno,struct xfs_buf ** bpp)27030f712c9SDave Chinner xfs_dir3_leaf_read(
27130f712c9SDave Chinner struct xfs_trans *tp,
27230f712c9SDave Chinner struct xfs_inode *dp,
27330f712c9SDave Chinner xfs_dablk_t fbno,
27430f712c9SDave Chinner struct xfs_buf **bpp)
27530f712c9SDave Chinner {
27630f712c9SDave Chinner int err;
27730f712c9SDave Chinner
278cd2c9f1bSChristoph Hellwig err = xfs_da_read_buf(tp, dp, fbno, 0, bpp, XFS_DATA_FORK,
279c943c0b2SChristoph Hellwig &xfs_dir3_leaf1_buf_ops);
280cd87d867SDarrick J. Wong if (!err && tp && *bpp)
28130f712c9SDave Chinner xfs_trans_buf_set_type(tp, *bpp, XFS_BLFT_DIR_LEAF1_BUF);
28230f712c9SDave Chinner return err;
28330f712c9SDave Chinner }
28430f712c9SDave Chinner
28530f712c9SDave Chinner int
xfs_dir3_leafn_read(struct xfs_trans * tp,struct xfs_inode * dp,xfs_dablk_t fbno,struct xfs_buf ** bpp)28630f712c9SDave Chinner xfs_dir3_leafn_read(
28730f712c9SDave Chinner struct xfs_trans *tp,
28830f712c9SDave Chinner struct xfs_inode *dp,
28930f712c9SDave Chinner xfs_dablk_t fbno,
29030f712c9SDave Chinner struct xfs_buf **bpp)
29130f712c9SDave Chinner {
29230f712c9SDave Chinner int err;
29330f712c9SDave Chinner
294cd2c9f1bSChristoph Hellwig err = xfs_da_read_buf(tp, dp, fbno, 0, bpp, XFS_DATA_FORK,
295f3fcb314SChristoph Hellwig &xfs_dir3_leafn_buf_ops);
296cd87d867SDarrick J. Wong if (!err && tp && *bpp)
29730f712c9SDave Chinner xfs_trans_buf_set_type(tp, *bpp, XFS_BLFT_DIR_LEAFN_BUF);
29830f712c9SDave Chinner return err;
29930f712c9SDave Chinner }
30030f712c9SDave Chinner
30130f712c9SDave Chinner /*
30230f712c9SDave Chinner * Initialize a new leaf block, leaf1 or leafn magic accepted.
30330f712c9SDave Chinner */
30430f712c9SDave Chinner static void
xfs_dir3_leaf_init(struct xfs_mount * mp,struct xfs_trans * tp,struct xfs_buf * bp,xfs_ino_t owner,uint16_t type)30530f712c9SDave Chinner xfs_dir3_leaf_init(
30630f712c9SDave Chinner struct xfs_mount *mp,
30730f712c9SDave Chinner struct xfs_trans *tp,
30830f712c9SDave Chinner struct xfs_buf *bp,
30930f712c9SDave Chinner xfs_ino_t owner,
310c8ce540dSDarrick J. Wong uint16_t type)
31130f712c9SDave Chinner {
31230f712c9SDave Chinner struct xfs_dir2_leaf *leaf = bp->b_addr;
31330f712c9SDave Chinner
31430f712c9SDave Chinner ASSERT(type == XFS_DIR2_LEAF1_MAGIC || type == XFS_DIR2_LEAFN_MAGIC);
31530f712c9SDave Chinner
31638c26bfdSDave Chinner if (xfs_has_crc(mp)) {
31730f712c9SDave Chinner struct xfs_dir3_leaf_hdr *leaf3 = bp->b_addr;
31830f712c9SDave Chinner
31930f712c9SDave Chinner memset(leaf3, 0, sizeof(*leaf3));
32030f712c9SDave Chinner
32130f712c9SDave Chinner leaf3->info.hdr.magic = (type == XFS_DIR2_LEAF1_MAGIC)
32230f712c9SDave Chinner ? cpu_to_be16(XFS_DIR3_LEAF1_MAGIC)
32330f712c9SDave Chinner : cpu_to_be16(XFS_DIR3_LEAFN_MAGIC);
3249343ee76SDave Chinner leaf3->info.blkno = cpu_to_be64(xfs_buf_daddr(bp));
32530f712c9SDave Chinner leaf3->info.owner = cpu_to_be64(owner);
326ce748eaaSEric Sandeen uuid_copy(&leaf3->info.uuid, &mp->m_sb.sb_meta_uuid);
32730f712c9SDave Chinner } else {
32830f712c9SDave Chinner memset(leaf, 0, sizeof(*leaf));
32930f712c9SDave Chinner leaf->hdr.info.magic = cpu_to_be16(type);
33030f712c9SDave Chinner }
33130f712c9SDave Chinner
33230f712c9SDave Chinner /*
33330f712c9SDave Chinner * If it's a leaf-format directory initialize the tail.
33430f712c9SDave Chinner * Caller is responsible for initialising the bests table.
33530f712c9SDave Chinner */
33630f712c9SDave Chinner if (type == XFS_DIR2_LEAF1_MAGIC) {
33730f712c9SDave Chinner struct xfs_dir2_leaf_tail *ltp;
33830f712c9SDave Chinner
33930f712c9SDave Chinner ltp = xfs_dir2_leaf_tail_p(mp->m_dir_geo, leaf);
34030f712c9SDave Chinner ltp->bestcount = 0;
34130f712c9SDave Chinner bp->b_ops = &xfs_dir3_leaf1_buf_ops;
34230f712c9SDave Chinner xfs_trans_buf_set_type(tp, bp, XFS_BLFT_DIR_LEAF1_BUF);
34330f712c9SDave Chinner } else {
34430f712c9SDave Chinner bp->b_ops = &xfs_dir3_leafn_buf_ops;
34530f712c9SDave Chinner xfs_trans_buf_set_type(tp, bp, XFS_BLFT_DIR_LEAFN_BUF);
34630f712c9SDave Chinner }
34730f712c9SDave Chinner }
34830f712c9SDave Chinner
34930f712c9SDave Chinner int
xfs_dir3_leaf_get_buf(xfs_da_args_t * args,xfs_dir2_db_t bno,struct xfs_buf ** bpp,uint16_t magic)35030f712c9SDave Chinner xfs_dir3_leaf_get_buf(
35130f712c9SDave Chinner xfs_da_args_t *args,
35230f712c9SDave Chinner xfs_dir2_db_t bno,
35330f712c9SDave Chinner struct xfs_buf **bpp,
354c8ce540dSDarrick J. Wong uint16_t magic)
35530f712c9SDave Chinner {
35630f712c9SDave Chinner struct xfs_inode *dp = args->dp;
35730f712c9SDave Chinner struct xfs_trans *tp = args->trans;
35830f712c9SDave Chinner struct xfs_mount *mp = dp->i_mount;
35930f712c9SDave Chinner struct xfs_buf *bp;
36030f712c9SDave Chinner int error;
36130f712c9SDave Chinner
36230f712c9SDave Chinner ASSERT(magic == XFS_DIR2_LEAF1_MAGIC || magic == XFS_DIR2_LEAFN_MAGIC);
36330f712c9SDave Chinner ASSERT(bno >= xfs_dir2_byte_to_db(args->geo, XFS_DIR2_LEAF_OFFSET) &&
36430f712c9SDave Chinner bno < xfs_dir2_byte_to_db(args->geo, XFS_DIR2_FREE_OFFSET));
36530f712c9SDave Chinner
36630f712c9SDave Chinner error = xfs_da_get_buf(tp, dp, xfs_dir2_db_to_da(args->geo, bno),
3672911edb6SChristoph Hellwig &bp, XFS_DATA_FORK);
36830f712c9SDave Chinner if (error)
36930f712c9SDave Chinner return error;
37030f712c9SDave Chinner
37130f712c9SDave Chinner xfs_dir3_leaf_init(mp, tp, bp, dp->i_ino, magic);
37230f712c9SDave Chinner xfs_dir3_leaf_log_header(args, bp);
37330f712c9SDave Chinner if (magic == XFS_DIR2_LEAF1_MAGIC)
37430f712c9SDave Chinner xfs_dir3_leaf_log_tail(args, bp);
37530f712c9SDave Chinner *bpp = bp;
37630f712c9SDave Chinner return 0;
37730f712c9SDave Chinner }
37830f712c9SDave Chinner
37930f712c9SDave Chinner /*
38030f712c9SDave Chinner * Convert a block form directory to a leaf form directory.
38130f712c9SDave Chinner */
38230f712c9SDave Chinner int /* error */
xfs_dir2_block_to_leaf(xfs_da_args_t * args,struct xfs_buf * dbp)38330f712c9SDave Chinner xfs_dir2_block_to_leaf(
38430f712c9SDave Chinner xfs_da_args_t *args, /* operation arguments */
38530f712c9SDave Chinner struct xfs_buf *dbp) /* input block's buffer */
38630f712c9SDave Chinner {
38730f712c9SDave Chinner __be16 *bestsp; /* leaf's bestsp entries */
38830f712c9SDave Chinner xfs_dablk_t blkno; /* leaf block's bno */
38930f712c9SDave Chinner xfs_dir2_data_hdr_t *hdr; /* block header */
39030f712c9SDave Chinner xfs_dir2_leaf_entry_t *blp; /* block's leaf entries */
39130f712c9SDave Chinner xfs_dir2_block_tail_t *btp; /* block's tail */
39230f712c9SDave Chinner xfs_inode_t *dp; /* incore directory inode */
39330f712c9SDave Chinner int error; /* error return code */
39430f712c9SDave Chinner struct xfs_buf *lbp; /* leaf block's buffer */
39530f712c9SDave Chinner xfs_dir2_db_t ldb; /* leaf block's bno */
39630f712c9SDave Chinner xfs_dir2_leaf_t *leaf; /* leaf structure */
39730f712c9SDave Chinner xfs_dir2_leaf_tail_t *ltp; /* leaf's tail */
39830f712c9SDave Chinner int needlog; /* need to log block header */
39930f712c9SDave Chinner int needscan; /* need to rescan bestfree */
40030f712c9SDave Chinner xfs_trans_t *tp; /* transaction pointer */
40130f712c9SDave Chinner struct xfs_dir2_data_free *bf;
40230f712c9SDave Chinner struct xfs_dir3_icleaf_hdr leafhdr;
40330f712c9SDave Chinner
40430f712c9SDave Chinner trace_xfs_dir2_block_to_leaf(args);
40530f712c9SDave Chinner
40630f712c9SDave Chinner dp = args->dp;
40730f712c9SDave Chinner tp = args->trans;
40830f712c9SDave Chinner /*
40930f712c9SDave Chinner * Add the leaf block to the inode.
41030f712c9SDave Chinner * This interface will only put blocks in the leaf/node range.
41130f712c9SDave Chinner * Since that's empty now, we'll get the root (block 0 in range).
41230f712c9SDave Chinner */
41330f712c9SDave Chinner if ((error = xfs_da_grow_inode(args, &blkno))) {
41430f712c9SDave Chinner return error;
41530f712c9SDave Chinner }
41630f712c9SDave Chinner ldb = xfs_dir2_da_to_db(args->geo, blkno);
41730f712c9SDave Chinner ASSERT(ldb == xfs_dir2_byte_to_db(args->geo, XFS_DIR2_LEAF_OFFSET));
41830f712c9SDave Chinner /*
41930f712c9SDave Chinner * Initialize the leaf block, get a buffer for it.
42030f712c9SDave Chinner */
42130f712c9SDave Chinner error = xfs_dir3_leaf_get_buf(args, ldb, &lbp, XFS_DIR2_LEAF1_MAGIC);
42230f712c9SDave Chinner if (error)
42330f712c9SDave Chinner return error;
42430f712c9SDave Chinner
42530f712c9SDave Chinner leaf = lbp->b_addr;
42630f712c9SDave Chinner hdr = dbp->b_addr;
42730f712c9SDave Chinner xfs_dir3_data_check(dp, dbp);
42830f712c9SDave Chinner btp = xfs_dir2_block_tail_p(args->geo, hdr);
42930f712c9SDave Chinner blp = xfs_dir2_block_leaf_p(btp);
4301848b607SChristoph Hellwig bf = xfs_dir2_data_bestfree_p(dp->i_mount, hdr);
43130f712c9SDave Chinner
43230f712c9SDave Chinner /*
43330f712c9SDave Chinner * Set the counts in the leaf header.
43430f712c9SDave Chinner */
43551842556SChristoph Hellwig xfs_dir2_leaf_hdr_from_disk(dp->i_mount, &leafhdr, leaf);
43630f712c9SDave Chinner leafhdr.count = be32_to_cpu(btp->count);
43730f712c9SDave Chinner leafhdr.stale = be32_to_cpu(btp->stale);
438163fbbb3SChristoph Hellwig xfs_dir2_leaf_hdr_to_disk(dp->i_mount, leaf, &leafhdr);
43930f712c9SDave Chinner xfs_dir3_leaf_log_header(args, lbp);
44030f712c9SDave Chinner
44130f712c9SDave Chinner /*
44230f712c9SDave Chinner * Could compact these but I think we always do the conversion
44330f712c9SDave Chinner * after squeezing out stale entries.
44430f712c9SDave Chinner */
445787b0893SChristoph Hellwig memcpy(leafhdr.ents, blp,
446787b0893SChristoph Hellwig be32_to_cpu(btp->count) * sizeof(struct xfs_dir2_leaf_entry));
447787b0893SChristoph Hellwig xfs_dir3_leaf_log_ents(args, &leafhdr, lbp, 0, leafhdr.count - 1);
44830f712c9SDave Chinner needscan = 0;
44930f712c9SDave Chinner needlog = 1;
45030f712c9SDave Chinner /*
45130f712c9SDave Chinner * Make the space formerly occupied by the leaf entries and block
45230f712c9SDave Chinner * tail be free.
45330f712c9SDave Chinner */
45430f712c9SDave Chinner xfs_dir2_data_make_free(args, dbp,
45530f712c9SDave Chinner (xfs_dir2_data_aoff_t)((char *)blp - (char *)hdr),
45630f712c9SDave Chinner (xfs_dir2_data_aoff_t)((char *)hdr + args->geo->blksize -
45730f712c9SDave Chinner (char *)blp),
45830f712c9SDave Chinner &needlog, &needscan);
45930f712c9SDave Chinner /*
46030f712c9SDave Chinner * Fix up the block header, make it a data block.
46130f712c9SDave Chinner */
46230f712c9SDave Chinner dbp->b_ops = &xfs_dir3_data_buf_ops;
46330f712c9SDave Chinner xfs_trans_buf_set_type(tp, dbp, XFS_BLFT_DIR_DATA_BUF);
46430f712c9SDave Chinner if (hdr->magic == cpu_to_be32(XFS_DIR2_BLOCK_MAGIC))
46530f712c9SDave Chinner hdr->magic = cpu_to_be32(XFS_DIR2_DATA_MAGIC);
46630f712c9SDave Chinner else
46730f712c9SDave Chinner hdr->magic = cpu_to_be32(XFS_DIR3_DATA_MAGIC);
46830f712c9SDave Chinner
46930f712c9SDave Chinner if (needscan)
470ae42976dSChristoph Hellwig xfs_dir2_data_freescan(dp->i_mount, hdr, &needlog);
47130f712c9SDave Chinner /*
47230f712c9SDave Chinner * Set up leaf tail and bests table.
47330f712c9SDave Chinner */
47430f712c9SDave Chinner ltp = xfs_dir2_leaf_tail_p(args->geo, leaf);
47530f712c9SDave Chinner ltp->bestcount = cpu_to_be32(1);
47630f712c9SDave Chinner bestsp = xfs_dir2_leaf_bests_p(ltp);
47730f712c9SDave Chinner bestsp[0] = bf[0].length;
47830f712c9SDave Chinner /*
47930f712c9SDave Chinner * Log the data header and leaf bests table.
48030f712c9SDave Chinner */
48130f712c9SDave Chinner if (needlog)
48230f712c9SDave Chinner xfs_dir2_data_log_header(args, dbp);
48330f712c9SDave Chinner xfs_dir3_leaf_check(dp, lbp);
48430f712c9SDave Chinner xfs_dir3_data_check(dp, dbp);
48530f712c9SDave Chinner xfs_dir3_leaf_log_bests(args, lbp, 0, 0);
48630f712c9SDave Chinner return 0;
48730f712c9SDave Chinner }
48830f712c9SDave Chinner
48930f712c9SDave Chinner STATIC void
xfs_dir3_leaf_find_stale(struct xfs_dir3_icleaf_hdr * leafhdr,struct xfs_dir2_leaf_entry * ents,int index,int * lowstale,int * highstale)49030f712c9SDave Chinner xfs_dir3_leaf_find_stale(
49130f712c9SDave Chinner struct xfs_dir3_icleaf_hdr *leafhdr,
49230f712c9SDave Chinner struct xfs_dir2_leaf_entry *ents,
49330f712c9SDave Chinner int index,
49430f712c9SDave Chinner int *lowstale,
49530f712c9SDave Chinner int *highstale)
49630f712c9SDave Chinner {
49730f712c9SDave Chinner /*
49830f712c9SDave Chinner * Find the first stale entry before our index, if any.
49930f712c9SDave Chinner */
50030f712c9SDave Chinner for (*lowstale = index - 1; *lowstale >= 0; --*lowstale) {
50130f712c9SDave Chinner if (ents[*lowstale].address ==
50230f712c9SDave Chinner cpu_to_be32(XFS_DIR2_NULL_DATAPTR))
50330f712c9SDave Chinner break;
50430f712c9SDave Chinner }
50530f712c9SDave Chinner
50630f712c9SDave Chinner /*
50730f712c9SDave Chinner * Find the first stale entry at or after our index, if any.
50830f712c9SDave Chinner * Stop if the result would require moving more entries than using
50930f712c9SDave Chinner * lowstale.
51030f712c9SDave Chinner */
51130f712c9SDave Chinner for (*highstale = index; *highstale < leafhdr->count; ++*highstale) {
51230f712c9SDave Chinner if (ents[*highstale].address ==
51330f712c9SDave Chinner cpu_to_be32(XFS_DIR2_NULL_DATAPTR))
51430f712c9SDave Chinner break;
51530f712c9SDave Chinner if (*lowstale >= 0 && index - *lowstale <= *highstale - index)
51630f712c9SDave Chinner break;
51730f712c9SDave Chinner }
51830f712c9SDave Chinner }
51930f712c9SDave Chinner
52030f712c9SDave Chinner struct xfs_dir2_leaf_entry *
xfs_dir3_leaf_find_entry(struct xfs_dir3_icleaf_hdr * leafhdr,struct xfs_dir2_leaf_entry * ents,int index,int compact,int lowstale,int highstale,int * lfloglow,int * lfloghigh)52130f712c9SDave Chinner xfs_dir3_leaf_find_entry(
52230f712c9SDave Chinner struct xfs_dir3_icleaf_hdr *leafhdr,
52330f712c9SDave Chinner struct xfs_dir2_leaf_entry *ents,
52430f712c9SDave Chinner int index, /* leaf table position */
52530f712c9SDave Chinner int compact, /* need to compact leaves */
52630f712c9SDave Chinner int lowstale, /* index of prev stale leaf */
52730f712c9SDave Chinner int highstale, /* index of next stale leaf */
52830f712c9SDave Chinner int *lfloglow, /* low leaf logging index */
52930f712c9SDave Chinner int *lfloghigh) /* high leaf logging index */
53030f712c9SDave Chinner {
53130f712c9SDave Chinner if (!leafhdr->stale) {
53230f712c9SDave Chinner xfs_dir2_leaf_entry_t *lep; /* leaf entry table pointer */
53330f712c9SDave Chinner
53430f712c9SDave Chinner /*
53530f712c9SDave Chinner * Now we need to make room to insert the leaf entry.
53630f712c9SDave Chinner *
53730f712c9SDave Chinner * If there are no stale entries, just insert a hole at index.
53830f712c9SDave Chinner */
53930f712c9SDave Chinner lep = &ents[index];
54030f712c9SDave Chinner if (index < leafhdr->count)
54130f712c9SDave Chinner memmove(lep + 1, lep,
54230f712c9SDave Chinner (leafhdr->count - index) * sizeof(*lep));
54330f712c9SDave Chinner
54430f712c9SDave Chinner /*
54530f712c9SDave Chinner * Record low and high logging indices for the leaf.
54630f712c9SDave Chinner */
54730f712c9SDave Chinner *lfloglow = index;
54830f712c9SDave Chinner *lfloghigh = leafhdr->count++;
54930f712c9SDave Chinner return lep;
55030f712c9SDave Chinner }
55130f712c9SDave Chinner
55230f712c9SDave Chinner /*
55330f712c9SDave Chinner * There are stale entries.
55430f712c9SDave Chinner *
55530f712c9SDave Chinner * We will use one of them for the new entry. It's probably not at
55630f712c9SDave Chinner * the right location, so we'll have to shift some up or down first.
55730f712c9SDave Chinner *
55830f712c9SDave Chinner * If we didn't compact before, we need to find the nearest stale
55930f712c9SDave Chinner * entries before and after our insertion point.
56030f712c9SDave Chinner */
56130f712c9SDave Chinner if (compact == 0)
56230f712c9SDave Chinner xfs_dir3_leaf_find_stale(leafhdr, ents, index,
56330f712c9SDave Chinner &lowstale, &highstale);
56430f712c9SDave Chinner
56530f712c9SDave Chinner /*
56630f712c9SDave Chinner * If the low one is better, use it.
56730f712c9SDave Chinner */
56830f712c9SDave Chinner if (lowstale >= 0 &&
56930f712c9SDave Chinner (highstale == leafhdr->count ||
57030f712c9SDave Chinner index - lowstale - 1 < highstale - index)) {
57130f712c9SDave Chinner ASSERT(index - lowstale - 1 >= 0);
57230f712c9SDave Chinner ASSERT(ents[lowstale].address ==
57330f712c9SDave Chinner cpu_to_be32(XFS_DIR2_NULL_DATAPTR));
57430f712c9SDave Chinner
57530f712c9SDave Chinner /*
57630f712c9SDave Chinner * Copy entries up to cover the stale entry and make room
57730f712c9SDave Chinner * for the new entry.
57830f712c9SDave Chinner */
57930f712c9SDave Chinner if (index - lowstale - 1 > 0) {
58030f712c9SDave Chinner memmove(&ents[lowstale], &ents[lowstale + 1],
58130f712c9SDave Chinner (index - lowstale - 1) *
58230f712c9SDave Chinner sizeof(xfs_dir2_leaf_entry_t));
58330f712c9SDave Chinner }
5849bb54cb5SDave Chinner *lfloglow = min(lowstale, *lfloglow);
5859bb54cb5SDave Chinner *lfloghigh = max(index - 1, *lfloghigh);
58630f712c9SDave Chinner leafhdr->stale--;
58730f712c9SDave Chinner return &ents[index - 1];
58830f712c9SDave Chinner }
58930f712c9SDave Chinner
59030f712c9SDave Chinner /*
59130f712c9SDave Chinner * The high one is better, so use that one.
59230f712c9SDave Chinner */
59330f712c9SDave Chinner ASSERT(highstale - index >= 0);
59430f712c9SDave Chinner ASSERT(ents[highstale].address == cpu_to_be32(XFS_DIR2_NULL_DATAPTR));
59530f712c9SDave Chinner
59630f712c9SDave Chinner /*
59730f712c9SDave Chinner * Copy entries down to cover the stale entry and make room for the
59830f712c9SDave Chinner * new entry.
59930f712c9SDave Chinner */
60030f712c9SDave Chinner if (highstale - index > 0) {
60130f712c9SDave Chinner memmove(&ents[index + 1], &ents[index],
60230f712c9SDave Chinner (highstale - index) * sizeof(xfs_dir2_leaf_entry_t));
60330f712c9SDave Chinner }
6049bb54cb5SDave Chinner *lfloglow = min(index, *lfloglow);
6059bb54cb5SDave Chinner *lfloghigh = max(highstale, *lfloghigh);
60630f712c9SDave Chinner leafhdr->stale--;
60730f712c9SDave Chinner return &ents[index];
60830f712c9SDave Chinner }
60930f712c9SDave Chinner
61030f712c9SDave Chinner /*
61130f712c9SDave Chinner * Add an entry to a leaf form directory.
61230f712c9SDave Chinner */
61330f712c9SDave Chinner int /* error */
xfs_dir2_leaf_addname(struct xfs_da_args * args)61430f712c9SDave Chinner xfs_dir2_leaf_addname(
6156ef50fe9SDarrick J. Wong struct xfs_da_args *args) /* operation arguments */
61630f712c9SDave Chinner {
6176ef50fe9SDarrick J. Wong struct xfs_dir3_icleaf_hdr leafhdr;
6186ef50fe9SDarrick J. Wong struct xfs_trans *tp = args->trans;
61930f712c9SDave Chinner __be16 *bestsp; /* freespace table in leaf */
6206ef50fe9SDarrick J. Wong __be16 *tagp; /* end of data entry */
62130f712c9SDave Chinner struct xfs_buf *dbp; /* data block buffer */
6226ef50fe9SDarrick J. Wong struct xfs_buf *lbp; /* leaf's buffer */
6236ef50fe9SDarrick J. Wong struct xfs_dir2_leaf *leaf; /* leaf structure */
6246ef50fe9SDarrick J. Wong struct xfs_inode *dp = args->dp; /* incore directory inode */
6256ef50fe9SDarrick J. Wong struct xfs_dir2_data_hdr *hdr; /* data block header */
6266ef50fe9SDarrick J. Wong struct xfs_dir2_data_entry *dep; /* data block entry */
6276ef50fe9SDarrick J. Wong struct xfs_dir2_leaf_entry *lep; /* leaf entry table pointer */
6286ef50fe9SDarrick J. Wong struct xfs_dir2_leaf_entry *ents;
6296ef50fe9SDarrick J. Wong struct xfs_dir2_data_unused *dup; /* data unused entry */
6306ef50fe9SDarrick J. Wong struct xfs_dir2_leaf_tail *ltp; /* leaf tail pointer */
6316ef50fe9SDarrick J. Wong struct xfs_dir2_data_free *bf; /* bestfree table */
6326ef50fe9SDarrick J. Wong int compact; /* need to compact leaves */
63330f712c9SDave Chinner int error; /* error return value */
63430f712c9SDave Chinner int grown; /* allocated new data block */
635f51fac68SDarrick J. Wong int highstale = 0; /* index of next stale leaf */
63630f712c9SDave Chinner int i; /* temporary, index */
63730f712c9SDave Chinner int index; /* leaf table position */
63830f712c9SDave Chinner int length; /* length of new entry */
63930f712c9SDave Chinner int lfloglow; /* low leaf logging index */
64030f712c9SDave Chinner int lfloghigh; /* high leaf logging index */
641f51fac68SDarrick J. Wong int lowstale = 0; /* index of prev stale leaf */
64230f712c9SDave Chinner int needbytes; /* leaf block bytes needed */
64330f712c9SDave Chinner int needlog; /* need to log data header */
64430f712c9SDave Chinner int needscan; /* need to rescan data free */
64530f712c9SDave Chinner xfs_dir2_db_t use_block; /* data block number */
64630f712c9SDave Chinner
64730f712c9SDave Chinner trace_xfs_dir2_leaf_addname(args);
64830f712c9SDave Chinner
649c943c0b2SChristoph Hellwig error = xfs_dir3_leaf_read(tp, dp, args->geo->leafblk, &lbp);
65030f712c9SDave Chinner if (error)
65130f712c9SDave Chinner return error;
65230f712c9SDave Chinner
65330f712c9SDave Chinner /*
65430f712c9SDave Chinner * Look up the entry by hash value and name.
65530f712c9SDave Chinner * We know it's not there, our caller has already done a lookup.
65630f712c9SDave Chinner * So the index is of the entry to insert in front of.
65730f712c9SDave Chinner * But if there are dup hash values the index is of the first of those.
65830f712c9SDave Chinner */
65930f712c9SDave Chinner index = xfs_dir2_leaf_search_hash(args, lbp);
66030f712c9SDave Chinner leaf = lbp->b_addr;
66130f712c9SDave Chinner ltp = xfs_dir2_leaf_tail_p(args->geo, leaf);
66251842556SChristoph Hellwig xfs_dir2_leaf_hdr_from_disk(dp->i_mount, &leafhdr, leaf);
663787b0893SChristoph Hellwig ents = leafhdr.ents;
66430f712c9SDave Chinner bestsp = xfs_dir2_leaf_bests_p(ltp);
665fdbb8c5bSChristoph Hellwig length = xfs_dir2_data_entsize(dp->i_mount, args->namelen);
66630f712c9SDave Chinner
66730f712c9SDave Chinner /*
66830f712c9SDave Chinner * See if there are any entries with the same hash value
66930f712c9SDave Chinner * and space in their block for the new entry.
67030f712c9SDave Chinner * This is good because it puts multiple same-hash value entries
67130f712c9SDave Chinner * in a data block, improving the lookup of those entries.
67230f712c9SDave Chinner */
67330f712c9SDave Chinner for (use_block = -1, lep = &ents[index];
67430f712c9SDave Chinner index < leafhdr.count && be32_to_cpu(lep->hashval) == args->hashval;
67530f712c9SDave Chinner index++, lep++) {
67630f712c9SDave Chinner if (be32_to_cpu(lep->address) == XFS_DIR2_NULL_DATAPTR)
67730f712c9SDave Chinner continue;
67830f712c9SDave Chinner i = xfs_dir2_dataptr_to_db(args->geo, be32_to_cpu(lep->address));
67930f712c9SDave Chinner ASSERT(i < be32_to_cpu(ltp->bestcount));
68030f712c9SDave Chinner ASSERT(bestsp[i] != cpu_to_be16(NULLDATAOFF));
68130f712c9SDave Chinner if (be16_to_cpu(bestsp[i]) >= length) {
68230f712c9SDave Chinner use_block = i;
68330f712c9SDave Chinner break;
68430f712c9SDave Chinner }
68530f712c9SDave Chinner }
68630f712c9SDave Chinner /*
68730f712c9SDave Chinner * Didn't find a block yet, linear search all the data blocks.
68830f712c9SDave Chinner */
68930f712c9SDave Chinner if (use_block == -1) {
69030f712c9SDave Chinner for (i = 0; i < be32_to_cpu(ltp->bestcount); i++) {
69130f712c9SDave Chinner /*
69230f712c9SDave Chinner * Remember a block we see that's missing.
69330f712c9SDave Chinner */
69430f712c9SDave Chinner if (bestsp[i] == cpu_to_be16(NULLDATAOFF) &&
69530f712c9SDave Chinner use_block == -1)
69630f712c9SDave Chinner use_block = i;
69730f712c9SDave Chinner else if (be16_to_cpu(bestsp[i]) >= length) {
69830f712c9SDave Chinner use_block = i;
69930f712c9SDave Chinner break;
70030f712c9SDave Chinner }
70130f712c9SDave Chinner }
70230f712c9SDave Chinner }
70330f712c9SDave Chinner /*
70430f712c9SDave Chinner * How many bytes do we need in the leaf block?
70530f712c9SDave Chinner */
70630f712c9SDave Chinner needbytes = 0;
70730f712c9SDave Chinner if (!leafhdr.stale)
70830f712c9SDave Chinner needbytes += sizeof(xfs_dir2_leaf_entry_t);
70930f712c9SDave Chinner if (use_block == -1)
71030f712c9SDave Chinner needbytes += sizeof(xfs_dir2_data_off_t);
71130f712c9SDave Chinner
71230f712c9SDave Chinner /*
71330f712c9SDave Chinner * Now kill use_block if it refers to a missing block, so we
71430f712c9SDave Chinner * can use it as an indication of allocation needed.
71530f712c9SDave Chinner */
71630f712c9SDave Chinner if (use_block != -1 && bestsp[use_block] == cpu_to_be16(NULLDATAOFF))
71730f712c9SDave Chinner use_block = -1;
71830f712c9SDave Chinner /*
71930f712c9SDave Chinner * If we don't have enough free bytes but we can make enough
72030f712c9SDave Chinner * by compacting out stale entries, we'll do that.
72130f712c9SDave Chinner */
72230f712c9SDave Chinner if ((char *)bestsp - (char *)&ents[leafhdr.count] < needbytes &&
72330f712c9SDave Chinner leafhdr.stale > 1)
72430f712c9SDave Chinner compact = 1;
72530f712c9SDave Chinner
72630f712c9SDave Chinner /*
72730f712c9SDave Chinner * Otherwise if we don't have enough free bytes we need to
72830f712c9SDave Chinner * convert to node form.
72930f712c9SDave Chinner */
73030f712c9SDave Chinner else if ((char *)bestsp - (char *)&ents[leafhdr.count] < needbytes) {
73130f712c9SDave Chinner /*
73230f712c9SDave Chinner * Just checking or no space reservation, give up.
73330f712c9SDave Chinner */
73430f712c9SDave Chinner if ((args->op_flags & XFS_DA_OP_JUSTCHECK) ||
73530f712c9SDave Chinner args->total == 0) {
73630f712c9SDave Chinner xfs_trans_brelse(tp, lbp);
7372451337dSDave Chinner return -ENOSPC;
73830f712c9SDave Chinner }
73930f712c9SDave Chinner /*
74030f712c9SDave Chinner * Convert to node form.
74130f712c9SDave Chinner */
74230f712c9SDave Chinner error = xfs_dir2_leaf_to_node(args, lbp);
74330f712c9SDave Chinner if (error)
74430f712c9SDave Chinner return error;
74530f712c9SDave Chinner /*
74630f712c9SDave Chinner * Then add the new entry.
74730f712c9SDave Chinner */
74830f712c9SDave Chinner return xfs_dir2_node_addname(args);
74930f712c9SDave Chinner }
75030f712c9SDave Chinner /*
75130f712c9SDave Chinner * Otherwise it will fit without compaction.
75230f712c9SDave Chinner */
75330f712c9SDave Chinner else
75430f712c9SDave Chinner compact = 0;
75530f712c9SDave Chinner /*
75630f712c9SDave Chinner * If just checking, then it will fit unless we needed to allocate
75730f712c9SDave Chinner * a new data block.
75830f712c9SDave Chinner */
75930f712c9SDave Chinner if (args->op_flags & XFS_DA_OP_JUSTCHECK) {
76030f712c9SDave Chinner xfs_trans_brelse(tp, lbp);
7612451337dSDave Chinner return use_block == -1 ? -ENOSPC : 0;
76230f712c9SDave Chinner }
76330f712c9SDave Chinner /*
76430f712c9SDave Chinner * If no allocations are allowed, return now before we've
76530f712c9SDave Chinner * changed anything.
76630f712c9SDave Chinner */
76730f712c9SDave Chinner if (args->total == 0 && use_block == -1) {
76830f712c9SDave Chinner xfs_trans_brelse(tp, lbp);
7692451337dSDave Chinner return -ENOSPC;
77030f712c9SDave Chinner }
77130f712c9SDave Chinner /*
77230f712c9SDave Chinner * Need to compact the leaf entries, removing stale ones.
77330f712c9SDave Chinner * Leave one stale entry behind - the one closest to our
77430f712c9SDave Chinner * insertion index - and we'll shift that one to our insertion
77530f712c9SDave Chinner * point later.
77630f712c9SDave Chinner */
77730f712c9SDave Chinner if (compact) {
77830f712c9SDave Chinner xfs_dir3_leaf_compact_x1(&leafhdr, ents, &index, &lowstale,
77930f712c9SDave Chinner &highstale, &lfloglow, &lfloghigh);
78030f712c9SDave Chinner }
78130f712c9SDave Chinner /*
78230f712c9SDave Chinner * There are stale entries, so we'll need log-low and log-high
78330f712c9SDave Chinner * impossibly bad values later.
78430f712c9SDave Chinner */
78530f712c9SDave Chinner else if (leafhdr.stale) {
78630f712c9SDave Chinner lfloglow = leafhdr.count;
78730f712c9SDave Chinner lfloghigh = -1;
78830f712c9SDave Chinner }
78930f712c9SDave Chinner /*
79030f712c9SDave Chinner * If there was no data block space found, we need to allocate
79130f712c9SDave Chinner * a new one.
79230f712c9SDave Chinner */
79330f712c9SDave Chinner if (use_block == -1) {
79430f712c9SDave Chinner /*
79530f712c9SDave Chinner * Add the new data block.
79630f712c9SDave Chinner */
79730f712c9SDave Chinner if ((error = xfs_dir2_grow_inode(args, XFS_DIR2_DATA_SPACE,
79830f712c9SDave Chinner &use_block))) {
79930f712c9SDave Chinner xfs_trans_brelse(tp, lbp);
80030f712c9SDave Chinner return error;
80130f712c9SDave Chinner }
80230f712c9SDave Chinner /*
80330f712c9SDave Chinner * Initialize the block.
80430f712c9SDave Chinner */
80530f712c9SDave Chinner if ((error = xfs_dir3_data_init(args, use_block, &dbp))) {
80630f712c9SDave Chinner xfs_trans_brelse(tp, lbp);
80730f712c9SDave Chinner return error;
80830f712c9SDave Chinner }
80930f712c9SDave Chinner /*
81030f712c9SDave Chinner * If we're adding a new data block on the end we need to
81130f712c9SDave Chinner * extend the bests table. Copy it up one entry.
81230f712c9SDave Chinner */
81330f712c9SDave Chinner if (use_block >= be32_to_cpu(ltp->bestcount)) {
81430f712c9SDave Chinner bestsp--;
81530f712c9SDave Chinner memmove(&bestsp[0], &bestsp[1],
81630f712c9SDave Chinner be32_to_cpu(ltp->bestcount) * sizeof(bestsp[0]));
81730f712c9SDave Chinner be32_add_cpu(<p->bestcount, 1);
81830f712c9SDave Chinner xfs_dir3_leaf_log_tail(args, lbp);
81930f712c9SDave Chinner xfs_dir3_leaf_log_bests(args, lbp, 0,
82030f712c9SDave Chinner be32_to_cpu(ltp->bestcount) - 1);
82130f712c9SDave Chinner }
82230f712c9SDave Chinner /*
82330f712c9SDave Chinner * If we're filling in a previously empty block just log it.
82430f712c9SDave Chinner */
82530f712c9SDave Chinner else
82630f712c9SDave Chinner xfs_dir3_leaf_log_bests(args, lbp, use_block, use_block);
82730f712c9SDave Chinner hdr = dbp->b_addr;
8281848b607SChristoph Hellwig bf = xfs_dir2_data_bestfree_p(dp->i_mount, hdr);
82930f712c9SDave Chinner bestsp[use_block] = bf[0].length;
83030f712c9SDave Chinner grown = 1;
83130f712c9SDave Chinner } else {
83230f712c9SDave Chinner /*
83330f712c9SDave Chinner * Already had space in some data block.
83430f712c9SDave Chinner * Just read that one in.
83530f712c9SDave Chinner */
83630f712c9SDave Chinner error = xfs_dir3_data_read(tp, dp,
83730f712c9SDave Chinner xfs_dir2_db_to_da(args->geo, use_block),
838cd2c9f1bSChristoph Hellwig 0, &dbp);
83930f712c9SDave Chinner if (error) {
84030f712c9SDave Chinner xfs_trans_brelse(tp, lbp);
84130f712c9SDave Chinner return error;
84230f712c9SDave Chinner }
84330f712c9SDave Chinner hdr = dbp->b_addr;
8441848b607SChristoph Hellwig bf = xfs_dir2_data_bestfree_p(dp->i_mount, hdr);
84530f712c9SDave Chinner grown = 0;
84630f712c9SDave Chinner }
84730f712c9SDave Chinner /*
84830f712c9SDave Chinner * Point to the biggest freespace in our data block.
84930f712c9SDave Chinner */
85030f712c9SDave Chinner dup = (xfs_dir2_data_unused_t *)
85130f712c9SDave Chinner ((char *)hdr + be16_to_cpu(bf[0].offset));
85230f712c9SDave Chinner needscan = needlog = 0;
85330f712c9SDave Chinner /*
85430f712c9SDave Chinner * Mark the initial part of our freespace in use for the new entry.
85530f712c9SDave Chinner */
8566915ef35SDarrick J. Wong error = xfs_dir2_data_use_free(args, dbp, dup,
8576915ef35SDarrick J. Wong (xfs_dir2_data_aoff_t)((char *)dup - (char *)hdr),
8586915ef35SDarrick J. Wong length, &needlog, &needscan);
8596915ef35SDarrick J. Wong if (error) {
8606915ef35SDarrick J. Wong xfs_trans_brelse(tp, lbp);
8616915ef35SDarrick J. Wong return error;
8626915ef35SDarrick J. Wong }
86330f712c9SDave Chinner /*
86430f712c9SDave Chinner * Initialize our new entry (at last).
86530f712c9SDave Chinner */
86630f712c9SDave Chinner dep = (xfs_dir2_data_entry_t *)dup;
86730f712c9SDave Chinner dep->inumber = cpu_to_be64(args->inumber);
86830f712c9SDave Chinner dep->namelen = args->namelen;
86930f712c9SDave Chinner memcpy(dep->name, args->name, dep->namelen);
87059b8b465SChristoph Hellwig xfs_dir2_data_put_ftype(dp->i_mount, dep, args->filetype);
8717e8ae7bdSChristoph Hellwig tagp = xfs_dir2_data_entry_tag_p(dp->i_mount, dep);
87230f712c9SDave Chinner *tagp = cpu_to_be16((char *)dep - (char *)hdr);
87330f712c9SDave Chinner /*
87430f712c9SDave Chinner * Need to scan fix up the bestfree table.
87530f712c9SDave Chinner */
87630f712c9SDave Chinner if (needscan)
877ae42976dSChristoph Hellwig xfs_dir2_data_freescan(dp->i_mount, hdr, &needlog);
87830f712c9SDave Chinner /*
87930f712c9SDave Chinner * Need to log the data block's header.
88030f712c9SDave Chinner */
88130f712c9SDave Chinner if (needlog)
88230f712c9SDave Chinner xfs_dir2_data_log_header(args, dbp);
88330f712c9SDave Chinner xfs_dir2_data_log_entry(args, dbp, dep);
88430f712c9SDave Chinner /*
88530f712c9SDave Chinner * If the bests table needs to be changed, do it.
88630f712c9SDave Chinner * Log the change unless we've already done that.
88730f712c9SDave Chinner */
88830f712c9SDave Chinner if (be16_to_cpu(bestsp[use_block]) != be16_to_cpu(bf[0].length)) {
88930f712c9SDave Chinner bestsp[use_block] = bf[0].length;
89030f712c9SDave Chinner if (!grown)
89130f712c9SDave Chinner xfs_dir3_leaf_log_bests(args, lbp, use_block, use_block);
89230f712c9SDave Chinner }
89330f712c9SDave Chinner
89430f712c9SDave Chinner lep = xfs_dir3_leaf_find_entry(&leafhdr, ents, index, compact, lowstale,
89530f712c9SDave Chinner highstale, &lfloglow, &lfloghigh);
89630f712c9SDave Chinner
89730f712c9SDave Chinner /*
89830f712c9SDave Chinner * Fill in the new leaf entry.
89930f712c9SDave Chinner */
90030f712c9SDave Chinner lep->hashval = cpu_to_be32(args->hashval);
90130f712c9SDave Chinner lep->address = cpu_to_be32(
90230f712c9SDave Chinner xfs_dir2_db_off_to_dataptr(args->geo, use_block,
90330f712c9SDave Chinner be16_to_cpu(*tagp)));
90430f712c9SDave Chinner /*
90530f712c9SDave Chinner * Log the leaf fields and give up the buffers.
90630f712c9SDave Chinner */
907163fbbb3SChristoph Hellwig xfs_dir2_leaf_hdr_to_disk(dp->i_mount, leaf, &leafhdr);
90830f712c9SDave Chinner xfs_dir3_leaf_log_header(args, lbp);
909787b0893SChristoph Hellwig xfs_dir3_leaf_log_ents(args, &leafhdr, lbp, lfloglow, lfloghigh);
91030f712c9SDave Chinner xfs_dir3_leaf_check(dp, lbp);
91130f712c9SDave Chinner xfs_dir3_data_check(dp, dbp);
91230f712c9SDave Chinner return 0;
91330f712c9SDave Chinner }
91430f712c9SDave Chinner
91530f712c9SDave Chinner /*
91630f712c9SDave Chinner * Compact out any stale entries in the leaf.
91730f712c9SDave Chinner * Log the header and changed leaf entries, if any.
91830f712c9SDave Chinner */
91930f712c9SDave Chinner void
xfs_dir3_leaf_compact(xfs_da_args_t * args,struct xfs_dir3_icleaf_hdr * leafhdr,struct xfs_buf * bp)92030f712c9SDave Chinner xfs_dir3_leaf_compact(
92130f712c9SDave Chinner xfs_da_args_t *args, /* operation arguments */
92230f712c9SDave Chinner struct xfs_dir3_icleaf_hdr *leafhdr,
92330f712c9SDave Chinner struct xfs_buf *bp) /* leaf buffer */
92430f712c9SDave Chinner {
92530f712c9SDave Chinner int from; /* source leaf index */
92630f712c9SDave Chinner xfs_dir2_leaf_t *leaf; /* leaf structure */
92730f712c9SDave Chinner int loglow; /* first leaf entry to log */
92830f712c9SDave Chinner int to; /* target leaf index */
92930f712c9SDave Chinner struct xfs_inode *dp = args->dp;
93030f712c9SDave Chinner
93130f712c9SDave Chinner leaf = bp->b_addr;
93230f712c9SDave Chinner if (!leafhdr->stale)
93330f712c9SDave Chinner return;
93430f712c9SDave Chinner
93530f712c9SDave Chinner /*
93630f712c9SDave Chinner * Compress out the stale entries in place.
93730f712c9SDave Chinner */
93830f712c9SDave Chinner for (from = to = 0, loglow = -1; from < leafhdr->count; from++) {
939787b0893SChristoph Hellwig if (leafhdr->ents[from].address ==
940787b0893SChristoph Hellwig cpu_to_be32(XFS_DIR2_NULL_DATAPTR))
94130f712c9SDave Chinner continue;
94230f712c9SDave Chinner /*
94330f712c9SDave Chinner * Only actually copy the entries that are different.
94430f712c9SDave Chinner */
94530f712c9SDave Chinner if (from > to) {
94630f712c9SDave Chinner if (loglow == -1)
94730f712c9SDave Chinner loglow = to;
948787b0893SChristoph Hellwig leafhdr->ents[to] = leafhdr->ents[from];
94930f712c9SDave Chinner }
95030f712c9SDave Chinner to++;
95130f712c9SDave Chinner }
95230f712c9SDave Chinner /*
95330f712c9SDave Chinner * Update and log the header, log the leaf entries.
95430f712c9SDave Chinner */
95530f712c9SDave Chinner ASSERT(leafhdr->stale == from - to);
95630f712c9SDave Chinner leafhdr->count -= leafhdr->stale;
95730f712c9SDave Chinner leafhdr->stale = 0;
95830f712c9SDave Chinner
959163fbbb3SChristoph Hellwig xfs_dir2_leaf_hdr_to_disk(dp->i_mount, leaf, leafhdr);
96030f712c9SDave Chinner xfs_dir3_leaf_log_header(args, bp);
96130f712c9SDave Chinner if (loglow != -1)
962787b0893SChristoph Hellwig xfs_dir3_leaf_log_ents(args, leafhdr, bp, loglow, to - 1);
96330f712c9SDave Chinner }
96430f712c9SDave Chinner
96530f712c9SDave Chinner /*
96630f712c9SDave Chinner * Compact the leaf entries, removing stale ones.
96730f712c9SDave Chinner * Leave one stale entry behind - the one closest to our
96830f712c9SDave Chinner * insertion index - and the caller will shift that one to our insertion
96930f712c9SDave Chinner * point later.
97030f712c9SDave Chinner * Return new insertion index, where the remaining stale entry is,
97130f712c9SDave Chinner * and leaf logging indices.
97230f712c9SDave Chinner */
97330f712c9SDave Chinner void
xfs_dir3_leaf_compact_x1(struct xfs_dir3_icleaf_hdr * leafhdr,struct xfs_dir2_leaf_entry * ents,int * indexp,int * lowstalep,int * highstalep,int * lowlogp,int * highlogp)97430f712c9SDave Chinner xfs_dir3_leaf_compact_x1(
97530f712c9SDave Chinner struct xfs_dir3_icleaf_hdr *leafhdr,
97630f712c9SDave Chinner struct xfs_dir2_leaf_entry *ents,
97730f712c9SDave Chinner int *indexp, /* insertion index */
97830f712c9SDave Chinner int *lowstalep, /* out: stale entry before us */
97930f712c9SDave Chinner int *highstalep, /* out: stale entry after us */
98030f712c9SDave Chinner int *lowlogp, /* out: low log index */
98130f712c9SDave Chinner int *highlogp) /* out: high log index */
98230f712c9SDave Chinner {
98330f712c9SDave Chinner int from; /* source copy index */
98430f712c9SDave Chinner int highstale; /* stale entry at/after index */
98530f712c9SDave Chinner int index; /* insertion index */
98630f712c9SDave Chinner int keepstale; /* source index of kept stale */
98730f712c9SDave Chinner int lowstale; /* stale entry before index */
98830f712c9SDave Chinner int newindex=0; /* new insertion index */
98930f712c9SDave Chinner int to; /* destination copy index */
99030f712c9SDave Chinner
99130f712c9SDave Chinner ASSERT(leafhdr->stale > 1);
99230f712c9SDave Chinner index = *indexp;
99330f712c9SDave Chinner
99430f712c9SDave Chinner xfs_dir3_leaf_find_stale(leafhdr, ents, index, &lowstale, &highstale);
99530f712c9SDave Chinner
99630f712c9SDave Chinner /*
99730f712c9SDave Chinner * Pick the better of lowstale and highstale.
99830f712c9SDave Chinner */
99930f712c9SDave Chinner if (lowstale >= 0 &&
100030f712c9SDave Chinner (highstale == leafhdr->count ||
100130f712c9SDave Chinner index - lowstale <= highstale - index))
100230f712c9SDave Chinner keepstale = lowstale;
100330f712c9SDave Chinner else
100430f712c9SDave Chinner keepstale = highstale;
100530f712c9SDave Chinner /*
100630f712c9SDave Chinner * Copy the entries in place, removing all the stale entries
100730f712c9SDave Chinner * except keepstale.
100830f712c9SDave Chinner */
100930f712c9SDave Chinner for (from = to = 0; from < leafhdr->count; from++) {
101030f712c9SDave Chinner /*
101130f712c9SDave Chinner * Notice the new value of index.
101230f712c9SDave Chinner */
101330f712c9SDave Chinner if (index == from)
101430f712c9SDave Chinner newindex = to;
101530f712c9SDave Chinner if (from != keepstale &&
101630f712c9SDave Chinner ents[from].address == cpu_to_be32(XFS_DIR2_NULL_DATAPTR)) {
101730f712c9SDave Chinner if (from == to)
101830f712c9SDave Chinner *lowlogp = to;
101930f712c9SDave Chinner continue;
102030f712c9SDave Chinner }
102130f712c9SDave Chinner /*
102230f712c9SDave Chinner * Record the new keepstale value for the insertion.
102330f712c9SDave Chinner */
102430f712c9SDave Chinner if (from == keepstale)
102530f712c9SDave Chinner lowstale = highstale = to;
102630f712c9SDave Chinner /*
102730f712c9SDave Chinner * Copy only the entries that have moved.
102830f712c9SDave Chinner */
102930f712c9SDave Chinner if (from > to)
103030f712c9SDave Chinner ents[to] = ents[from];
103130f712c9SDave Chinner to++;
103230f712c9SDave Chinner }
103330f712c9SDave Chinner ASSERT(from > to);
103430f712c9SDave Chinner /*
103530f712c9SDave Chinner * If the insertion point was past the last entry,
103630f712c9SDave Chinner * set the new insertion point accordingly.
103730f712c9SDave Chinner */
103830f712c9SDave Chinner if (index == from)
103930f712c9SDave Chinner newindex = to;
104030f712c9SDave Chinner *indexp = newindex;
104130f712c9SDave Chinner /*
104230f712c9SDave Chinner * Adjust the leaf header values.
104330f712c9SDave Chinner */
104430f712c9SDave Chinner leafhdr->count -= from - to;
104530f712c9SDave Chinner leafhdr->stale = 1;
104630f712c9SDave Chinner /*
104730f712c9SDave Chinner * Remember the low/high stale value only in the "right"
104830f712c9SDave Chinner * direction.
104930f712c9SDave Chinner */
105030f712c9SDave Chinner if (lowstale >= newindex)
105130f712c9SDave Chinner lowstale = -1;
105230f712c9SDave Chinner else
105330f712c9SDave Chinner highstale = leafhdr->count;
105430f712c9SDave Chinner *highlogp = leafhdr->count - 1;
105530f712c9SDave Chinner *lowstalep = lowstale;
105630f712c9SDave Chinner *highstalep = highstale;
105730f712c9SDave Chinner }
105830f712c9SDave Chinner
105930f712c9SDave Chinner /*
106030f712c9SDave Chinner * Log the bests entries indicated from a leaf1 block.
106130f712c9SDave Chinner */
106230f712c9SDave Chinner static void
xfs_dir3_leaf_log_bests(struct xfs_da_args * args,struct xfs_buf * bp,int first,int last)106330f712c9SDave Chinner xfs_dir3_leaf_log_bests(
106430f712c9SDave Chinner struct xfs_da_args *args,
106530f712c9SDave Chinner struct xfs_buf *bp, /* leaf buffer */
106630f712c9SDave Chinner int first, /* first entry to log */
106730f712c9SDave Chinner int last) /* last entry to log */
106830f712c9SDave Chinner {
106930f712c9SDave Chinner __be16 *firstb; /* pointer to first entry */
107030f712c9SDave Chinner __be16 *lastb; /* pointer to last entry */
107130f712c9SDave Chinner struct xfs_dir2_leaf *leaf = bp->b_addr;
107230f712c9SDave Chinner xfs_dir2_leaf_tail_t *ltp; /* leaf tail structure */
107330f712c9SDave Chinner
107430f712c9SDave Chinner ASSERT(leaf->hdr.info.magic == cpu_to_be16(XFS_DIR2_LEAF1_MAGIC) ||
107530f712c9SDave Chinner leaf->hdr.info.magic == cpu_to_be16(XFS_DIR3_LEAF1_MAGIC));
107630f712c9SDave Chinner
107730f712c9SDave Chinner ltp = xfs_dir2_leaf_tail_p(args->geo, leaf);
107830f712c9SDave Chinner firstb = xfs_dir2_leaf_bests_p(ltp) + first;
107930f712c9SDave Chinner lastb = xfs_dir2_leaf_bests_p(ltp) + last;
108030f712c9SDave Chinner xfs_trans_log_buf(args->trans, bp,
108130f712c9SDave Chinner (uint)((char *)firstb - (char *)leaf),
108230f712c9SDave Chinner (uint)((char *)lastb - (char *)leaf + sizeof(*lastb) - 1));
108330f712c9SDave Chinner }
108430f712c9SDave Chinner
108530f712c9SDave Chinner /*
108630f712c9SDave Chinner * Log the leaf entries indicated from a leaf1 or leafn block.
108730f712c9SDave Chinner */
108830f712c9SDave Chinner void
xfs_dir3_leaf_log_ents(struct xfs_da_args * args,struct xfs_dir3_icleaf_hdr * hdr,struct xfs_buf * bp,int first,int last)108930f712c9SDave Chinner xfs_dir3_leaf_log_ents(
109030f712c9SDave Chinner struct xfs_da_args *args,
1091787b0893SChristoph Hellwig struct xfs_dir3_icleaf_hdr *hdr,
109230f712c9SDave Chinner struct xfs_buf *bp,
109330f712c9SDave Chinner int first,
109430f712c9SDave Chinner int last)
109530f712c9SDave Chinner {
109630f712c9SDave Chinner xfs_dir2_leaf_entry_t *firstlep; /* pointer to first entry */
109730f712c9SDave Chinner xfs_dir2_leaf_entry_t *lastlep; /* pointer to last entry */
109830f712c9SDave Chinner struct xfs_dir2_leaf *leaf = bp->b_addr;
109930f712c9SDave Chinner
110030f712c9SDave Chinner ASSERT(leaf->hdr.info.magic == cpu_to_be16(XFS_DIR2_LEAF1_MAGIC) ||
110130f712c9SDave Chinner leaf->hdr.info.magic == cpu_to_be16(XFS_DIR3_LEAF1_MAGIC) ||
110230f712c9SDave Chinner leaf->hdr.info.magic == cpu_to_be16(XFS_DIR2_LEAFN_MAGIC) ||
110330f712c9SDave Chinner leaf->hdr.info.magic == cpu_to_be16(XFS_DIR3_LEAFN_MAGIC));
110430f712c9SDave Chinner
1105787b0893SChristoph Hellwig firstlep = &hdr->ents[first];
1106787b0893SChristoph Hellwig lastlep = &hdr->ents[last];
110730f712c9SDave Chinner xfs_trans_log_buf(args->trans, bp,
110830f712c9SDave Chinner (uint)((char *)firstlep - (char *)leaf),
110930f712c9SDave Chinner (uint)((char *)lastlep - (char *)leaf + sizeof(*lastlep) - 1));
111030f712c9SDave Chinner }
111130f712c9SDave Chinner
111230f712c9SDave Chinner /*
111330f712c9SDave Chinner * Log the header of the leaf1 or leafn block.
111430f712c9SDave Chinner */
111530f712c9SDave Chinner void
xfs_dir3_leaf_log_header(struct xfs_da_args * args,struct xfs_buf * bp)111630f712c9SDave Chinner xfs_dir3_leaf_log_header(
111730f712c9SDave Chinner struct xfs_da_args *args,
111830f712c9SDave Chinner struct xfs_buf *bp)
111930f712c9SDave Chinner {
112030f712c9SDave Chinner struct xfs_dir2_leaf *leaf = bp->b_addr;
112130f712c9SDave Chinner
112230f712c9SDave Chinner ASSERT(leaf->hdr.info.magic == cpu_to_be16(XFS_DIR2_LEAF1_MAGIC) ||
112330f712c9SDave Chinner leaf->hdr.info.magic == cpu_to_be16(XFS_DIR3_LEAF1_MAGIC) ||
112430f712c9SDave Chinner leaf->hdr.info.magic == cpu_to_be16(XFS_DIR2_LEAFN_MAGIC) ||
112530f712c9SDave Chinner leaf->hdr.info.magic == cpu_to_be16(XFS_DIR3_LEAFN_MAGIC));
112630f712c9SDave Chinner
112730f712c9SDave Chinner xfs_trans_log_buf(args->trans, bp,
112830f712c9SDave Chinner (uint)((char *)&leaf->hdr - (char *)leaf),
1129545910bcSChristoph Hellwig args->geo->leaf_hdr_size - 1);
113030f712c9SDave Chinner }
113130f712c9SDave Chinner
113230f712c9SDave Chinner /*
113330f712c9SDave Chinner * Log the tail of the leaf1 block.
113430f712c9SDave Chinner */
113530f712c9SDave Chinner STATIC void
xfs_dir3_leaf_log_tail(struct xfs_da_args * args,struct xfs_buf * bp)113630f712c9SDave Chinner xfs_dir3_leaf_log_tail(
113730f712c9SDave Chinner struct xfs_da_args *args,
113830f712c9SDave Chinner struct xfs_buf *bp)
113930f712c9SDave Chinner {
114030f712c9SDave Chinner struct xfs_dir2_leaf *leaf = bp->b_addr;
114130f712c9SDave Chinner xfs_dir2_leaf_tail_t *ltp; /* leaf tail structure */
114230f712c9SDave Chinner
114330f712c9SDave Chinner ASSERT(leaf->hdr.info.magic == cpu_to_be16(XFS_DIR2_LEAF1_MAGIC) ||
114430f712c9SDave Chinner leaf->hdr.info.magic == cpu_to_be16(XFS_DIR3_LEAF1_MAGIC) ||
114530f712c9SDave Chinner leaf->hdr.info.magic == cpu_to_be16(XFS_DIR2_LEAFN_MAGIC) ||
114630f712c9SDave Chinner leaf->hdr.info.magic == cpu_to_be16(XFS_DIR3_LEAFN_MAGIC));
114730f712c9SDave Chinner
114830f712c9SDave Chinner ltp = xfs_dir2_leaf_tail_p(args->geo, leaf);
114930f712c9SDave Chinner xfs_trans_log_buf(args->trans, bp, (uint)((char *)ltp - (char *)leaf),
115030f712c9SDave Chinner (uint)(args->geo->blksize - 1));
115130f712c9SDave Chinner }
115230f712c9SDave Chinner
115330f712c9SDave Chinner /*
115430f712c9SDave Chinner * Look up the entry referred to by args in the leaf format directory.
115530f712c9SDave Chinner * Most of the work is done by the xfs_dir2_leaf_lookup_int routine which
115630f712c9SDave Chinner * is also used by the node-format code.
115730f712c9SDave Chinner */
115830f712c9SDave Chinner int
xfs_dir2_leaf_lookup(xfs_da_args_t * args)115930f712c9SDave Chinner xfs_dir2_leaf_lookup(
116030f712c9SDave Chinner xfs_da_args_t *args) /* operation arguments */
116130f712c9SDave Chinner {
116230f712c9SDave Chinner struct xfs_buf *dbp; /* data block buffer */
116330f712c9SDave Chinner xfs_dir2_data_entry_t *dep; /* data block entry */
116430f712c9SDave Chinner xfs_inode_t *dp; /* incore directory inode */
116530f712c9SDave Chinner int error; /* error return code */
116630f712c9SDave Chinner int index; /* found entry index */
116730f712c9SDave Chinner struct xfs_buf *lbp; /* leaf buffer */
116830f712c9SDave Chinner xfs_dir2_leaf_entry_t *lep; /* leaf entry */
116930f712c9SDave Chinner xfs_trans_t *tp; /* transaction pointer */
1170787b0893SChristoph Hellwig struct xfs_dir3_icleaf_hdr leafhdr;
117130f712c9SDave Chinner
117230f712c9SDave Chinner trace_xfs_dir2_leaf_lookup(args);
117330f712c9SDave Chinner
117430f712c9SDave Chinner /*
117530f712c9SDave Chinner * Look up name in the leaf block, returning both buffers and index.
117630f712c9SDave Chinner */
1177787b0893SChristoph Hellwig error = xfs_dir2_leaf_lookup_int(args, &lbp, &index, &dbp, &leafhdr);
1178787b0893SChristoph Hellwig if (error)
117930f712c9SDave Chinner return error;
1180787b0893SChristoph Hellwig
118130f712c9SDave Chinner tp = args->trans;
118230f712c9SDave Chinner dp = args->dp;
118330f712c9SDave Chinner xfs_dir3_leaf_check(dp, lbp);
1184787b0893SChristoph Hellwig
118530f712c9SDave Chinner /*
118630f712c9SDave Chinner * Get to the leaf entry and contained data entry address.
118730f712c9SDave Chinner */
1188787b0893SChristoph Hellwig lep = &leafhdr.ents[index];
118930f712c9SDave Chinner
119030f712c9SDave Chinner /*
119130f712c9SDave Chinner * Point to the data entry.
119230f712c9SDave Chinner */
119330f712c9SDave Chinner dep = (xfs_dir2_data_entry_t *)
119430f712c9SDave Chinner ((char *)dbp->b_addr +
119530f712c9SDave Chinner xfs_dir2_dataptr_to_off(args->geo, be32_to_cpu(lep->address)));
119630f712c9SDave Chinner /*
119730f712c9SDave Chinner * Return the found inode number & CI name if appropriate
119830f712c9SDave Chinner */
119930f712c9SDave Chinner args->inumber = be64_to_cpu(dep->inumber);
120059b8b465SChristoph Hellwig args->filetype = xfs_dir2_data_get_ftype(dp->i_mount, dep);
120130f712c9SDave Chinner error = xfs_dir_cilookup_result(args, dep->name, dep->namelen);
120230f712c9SDave Chinner xfs_trans_brelse(tp, dbp);
120330f712c9SDave Chinner xfs_trans_brelse(tp, lbp);
120430f712c9SDave Chinner return error;
120530f712c9SDave Chinner }
120630f712c9SDave Chinner
120730f712c9SDave Chinner /*
120830f712c9SDave Chinner * Look up name/hash in the leaf block.
120930f712c9SDave Chinner * Fill in indexp with the found index, and dbpp with the data buffer.
121030f712c9SDave Chinner * If not found dbpp will be NULL, and ENOENT comes back.
121130f712c9SDave Chinner * lbpp will always be filled in with the leaf buffer unless there's an error.
121230f712c9SDave Chinner */
121330f712c9SDave Chinner static int /* error */
xfs_dir2_leaf_lookup_int(xfs_da_args_t * args,struct xfs_buf ** lbpp,int * indexp,struct xfs_buf ** dbpp,struct xfs_dir3_icleaf_hdr * leafhdr)121430f712c9SDave Chinner xfs_dir2_leaf_lookup_int(
121530f712c9SDave Chinner xfs_da_args_t *args, /* operation arguments */
121630f712c9SDave Chinner struct xfs_buf **lbpp, /* out: leaf buffer */
121730f712c9SDave Chinner int *indexp, /* out: index in leaf block */
1218787b0893SChristoph Hellwig struct xfs_buf **dbpp, /* out: data buffer */
1219787b0893SChristoph Hellwig struct xfs_dir3_icleaf_hdr *leafhdr)
122030f712c9SDave Chinner {
122130f712c9SDave Chinner xfs_dir2_db_t curdb = -1; /* current data block number */
122230f712c9SDave Chinner struct xfs_buf *dbp = NULL; /* data buffer */
122330f712c9SDave Chinner xfs_dir2_data_entry_t *dep; /* data entry */
122430f712c9SDave Chinner xfs_inode_t *dp; /* incore directory inode */
122530f712c9SDave Chinner int error; /* error return code */
122630f712c9SDave Chinner int index; /* index in leaf block */
122730f712c9SDave Chinner struct xfs_buf *lbp; /* leaf buffer */
122830f712c9SDave Chinner xfs_dir2_leaf_entry_t *lep; /* leaf entry */
122930f712c9SDave Chinner xfs_dir2_leaf_t *leaf; /* leaf structure */
123030f712c9SDave Chinner xfs_mount_t *mp; /* filesystem mount point */
123130f712c9SDave Chinner xfs_dir2_db_t newdb; /* new data block number */
123230f712c9SDave Chinner xfs_trans_t *tp; /* transaction pointer */
123330f712c9SDave Chinner xfs_dir2_db_t cidb = -1; /* case match data block no. */
123430f712c9SDave Chinner enum xfs_dacmp cmp; /* name compare result */
123530f712c9SDave Chinner
123630f712c9SDave Chinner dp = args->dp;
123730f712c9SDave Chinner tp = args->trans;
123830f712c9SDave Chinner mp = dp->i_mount;
123930f712c9SDave Chinner
1240c943c0b2SChristoph Hellwig error = xfs_dir3_leaf_read(tp, dp, args->geo->leafblk, &lbp);
124130f712c9SDave Chinner if (error)
124230f712c9SDave Chinner return error;
124330f712c9SDave Chinner
124430f712c9SDave Chinner *lbpp = lbp;
124530f712c9SDave Chinner leaf = lbp->b_addr;
124630f712c9SDave Chinner xfs_dir3_leaf_check(dp, lbp);
1247787b0893SChristoph Hellwig xfs_dir2_leaf_hdr_from_disk(mp, leafhdr, leaf);
124830f712c9SDave Chinner
124930f712c9SDave Chinner /*
125030f712c9SDave Chinner * Look for the first leaf entry with our hash value.
125130f712c9SDave Chinner */
125230f712c9SDave Chinner index = xfs_dir2_leaf_search_hash(args, lbp);
125330f712c9SDave Chinner /*
125430f712c9SDave Chinner * Loop over all the entries with the right hash value
125530f712c9SDave Chinner * looking to match the name.
125630f712c9SDave Chinner */
1257787b0893SChristoph Hellwig for (lep = &leafhdr->ents[index];
1258787b0893SChristoph Hellwig index < leafhdr->count &&
1259787b0893SChristoph Hellwig be32_to_cpu(lep->hashval) == args->hashval;
126030f712c9SDave Chinner lep++, index++) {
126130f712c9SDave Chinner /*
126230f712c9SDave Chinner * Skip over stale leaf entries.
126330f712c9SDave Chinner */
126430f712c9SDave Chinner if (be32_to_cpu(lep->address) == XFS_DIR2_NULL_DATAPTR)
126530f712c9SDave Chinner continue;
126630f712c9SDave Chinner /*
126730f712c9SDave Chinner * Get the new data block number.
126830f712c9SDave Chinner */
126930f712c9SDave Chinner newdb = xfs_dir2_dataptr_to_db(args->geo,
127030f712c9SDave Chinner be32_to_cpu(lep->address));
127130f712c9SDave Chinner /*
127230f712c9SDave Chinner * If it's not the same as the old data block number,
127330f712c9SDave Chinner * need to pitch the old one and read the new one.
127430f712c9SDave Chinner */
127530f712c9SDave Chinner if (newdb != curdb) {
127630f712c9SDave Chinner if (dbp)
127730f712c9SDave Chinner xfs_trans_brelse(tp, dbp);
127830f712c9SDave Chinner error = xfs_dir3_data_read(tp, dp,
127930f712c9SDave Chinner xfs_dir2_db_to_da(args->geo, newdb),
1280cd2c9f1bSChristoph Hellwig 0, &dbp);
128130f712c9SDave Chinner if (error) {
128230f712c9SDave Chinner xfs_trans_brelse(tp, lbp);
128330f712c9SDave Chinner return error;
128430f712c9SDave Chinner }
128530f712c9SDave Chinner curdb = newdb;
128630f712c9SDave Chinner }
128730f712c9SDave Chinner /*
128830f712c9SDave Chinner * Point to the data entry.
128930f712c9SDave Chinner */
129030f712c9SDave Chinner dep = (xfs_dir2_data_entry_t *)((char *)dbp->b_addr +
129130f712c9SDave Chinner xfs_dir2_dataptr_to_off(args->geo,
129230f712c9SDave Chinner be32_to_cpu(lep->address)));
129330f712c9SDave Chinner /*
129430f712c9SDave Chinner * Compare name and if it's an exact match, return the index
129530f712c9SDave Chinner * and buffer. If it's the first case-insensitive match, store
129630f712c9SDave Chinner * the index and buffer and continue looking for an exact match.
129730f712c9SDave Chinner */
1298d8d11fc7SChristoph Hellwig cmp = xfs_dir2_compname(args, dep->name, dep->namelen);
129930f712c9SDave Chinner if (cmp != XFS_CMP_DIFFERENT && cmp != args->cmpresult) {
130030f712c9SDave Chinner args->cmpresult = cmp;
130130f712c9SDave Chinner *indexp = index;
130230f712c9SDave Chinner /* case exact match: return the current buffer. */
130330f712c9SDave Chinner if (cmp == XFS_CMP_EXACT) {
130430f712c9SDave Chinner *dbpp = dbp;
130530f712c9SDave Chinner return 0;
130630f712c9SDave Chinner }
130730f712c9SDave Chinner cidb = curdb;
130830f712c9SDave Chinner }
130930f712c9SDave Chinner }
131030f712c9SDave Chinner ASSERT(args->op_flags & XFS_DA_OP_OKNOENT);
131130f712c9SDave Chinner /*
131230f712c9SDave Chinner * Here, we can only be doing a lookup (not a rename or remove).
131330f712c9SDave Chinner * If a case-insensitive match was found earlier, re-read the
131430f712c9SDave Chinner * appropriate data block if required and return it.
131530f712c9SDave Chinner */
131630f712c9SDave Chinner if (args->cmpresult == XFS_CMP_CASE) {
131730f712c9SDave Chinner ASSERT(cidb != -1);
131830f712c9SDave Chinner if (cidb != curdb) {
131930f712c9SDave Chinner xfs_trans_brelse(tp, dbp);
132030f712c9SDave Chinner error = xfs_dir3_data_read(tp, dp,
132130f712c9SDave Chinner xfs_dir2_db_to_da(args->geo, cidb),
1322cd2c9f1bSChristoph Hellwig 0, &dbp);
132330f712c9SDave Chinner if (error) {
132430f712c9SDave Chinner xfs_trans_brelse(tp, lbp);
132530f712c9SDave Chinner return error;
132630f712c9SDave Chinner }
132730f712c9SDave Chinner }
132830f712c9SDave Chinner *dbpp = dbp;
132930f712c9SDave Chinner return 0;
133030f712c9SDave Chinner }
133130f712c9SDave Chinner /*
13322451337dSDave Chinner * No match found, return -ENOENT.
133330f712c9SDave Chinner */
133430f712c9SDave Chinner ASSERT(cidb == -1);
133530f712c9SDave Chinner if (dbp)
133630f712c9SDave Chinner xfs_trans_brelse(tp, dbp);
133730f712c9SDave Chinner xfs_trans_brelse(tp, lbp);
13382451337dSDave Chinner return -ENOENT;
133930f712c9SDave Chinner }
134030f712c9SDave Chinner
134130f712c9SDave Chinner /*
134230f712c9SDave Chinner * Remove an entry from a leaf format directory.
134330f712c9SDave Chinner */
134430f712c9SDave Chinner int /* error */
xfs_dir2_leaf_removename(xfs_da_args_t * args)134530f712c9SDave Chinner xfs_dir2_leaf_removename(
134630f712c9SDave Chinner xfs_da_args_t *args) /* operation arguments */
134730f712c9SDave Chinner {
1348d73e1ceeSChristoph Hellwig struct xfs_da_geometry *geo = args->geo;
134930f712c9SDave Chinner __be16 *bestsp; /* leaf block best freespace */
135030f712c9SDave Chinner xfs_dir2_data_hdr_t *hdr; /* data block header */
135130f712c9SDave Chinner xfs_dir2_db_t db; /* data block number */
135230f712c9SDave Chinner struct xfs_buf *dbp; /* data block buffer */
135330f712c9SDave Chinner xfs_dir2_data_entry_t *dep; /* data entry structure */
135430f712c9SDave Chinner xfs_inode_t *dp; /* incore directory inode */
135530f712c9SDave Chinner int error; /* error return code */
135630f712c9SDave Chinner xfs_dir2_db_t i; /* temporary data block # */
135730f712c9SDave Chinner int index; /* index into leaf entries */
135830f712c9SDave Chinner struct xfs_buf *lbp; /* leaf buffer */
135930f712c9SDave Chinner xfs_dir2_leaf_t *leaf; /* leaf structure */
136030f712c9SDave Chinner xfs_dir2_leaf_entry_t *lep; /* leaf entry */
136130f712c9SDave Chinner xfs_dir2_leaf_tail_t *ltp; /* leaf tail structure */
136230f712c9SDave Chinner int needlog; /* need to log data header */
136330f712c9SDave Chinner int needscan; /* need to rescan data frees */
136430f712c9SDave Chinner xfs_dir2_data_off_t oldbest; /* old value of best free */
136530f712c9SDave Chinner struct xfs_dir2_data_free *bf; /* bestfree table */
136630f712c9SDave Chinner struct xfs_dir3_icleaf_hdr leafhdr;
136730f712c9SDave Chinner
136830f712c9SDave Chinner trace_xfs_dir2_leaf_removename(args);
136930f712c9SDave Chinner
137030f712c9SDave Chinner /*
137130f712c9SDave Chinner * Lookup the leaf entry, get the leaf and data blocks read in.
137230f712c9SDave Chinner */
1373787b0893SChristoph Hellwig error = xfs_dir2_leaf_lookup_int(args, &lbp, &index, &dbp, &leafhdr);
1374787b0893SChristoph Hellwig if (error)
137530f712c9SDave Chinner return error;
1376787b0893SChristoph Hellwig
137730f712c9SDave Chinner dp = args->dp;
137830f712c9SDave Chinner leaf = lbp->b_addr;
137930f712c9SDave Chinner hdr = dbp->b_addr;
138030f712c9SDave Chinner xfs_dir3_data_check(dp, dbp);
13811848b607SChristoph Hellwig bf = xfs_dir2_data_bestfree_p(dp->i_mount, hdr);
1382787b0893SChristoph Hellwig
138330f712c9SDave Chinner /*
138430f712c9SDave Chinner * Point to the leaf entry, use that to point to the data entry.
138530f712c9SDave Chinner */
1386787b0893SChristoph Hellwig lep = &leafhdr.ents[index];
1387d73e1ceeSChristoph Hellwig db = xfs_dir2_dataptr_to_db(geo, be32_to_cpu(lep->address));
138830f712c9SDave Chinner dep = (xfs_dir2_data_entry_t *)((char *)hdr +
1389d73e1ceeSChristoph Hellwig xfs_dir2_dataptr_to_off(geo, be32_to_cpu(lep->address)));
139030f712c9SDave Chinner needscan = needlog = 0;
139130f712c9SDave Chinner oldbest = be16_to_cpu(bf[0].length);
1392d73e1ceeSChristoph Hellwig ltp = xfs_dir2_leaf_tail_p(geo, leaf);
139330f712c9SDave Chinner bestsp = xfs_dir2_leaf_bests_p(ltp);
1394a5155b87SDarrick J. Wong if (be16_to_cpu(bestsp[db]) != oldbest) {
13958d57c216SDarrick J. Wong xfs_buf_mark_corrupt(lbp);
13963f883f5bSDarrick J. Wong return -EFSCORRUPTED;
1397a5155b87SDarrick J. Wong }
139830f712c9SDave Chinner /*
139930f712c9SDave Chinner * Mark the former data entry unused.
140030f712c9SDave Chinner */
140130f712c9SDave Chinner xfs_dir2_data_make_free(args, dbp,
140230f712c9SDave Chinner (xfs_dir2_data_aoff_t)((char *)dep - (char *)hdr),
1403fdbb8c5bSChristoph Hellwig xfs_dir2_data_entsize(dp->i_mount, dep->namelen), &needlog,
1404fdbb8c5bSChristoph Hellwig &needscan);
140530f712c9SDave Chinner /*
140630f712c9SDave Chinner * We just mark the leaf entry stale by putting a null in it.
140730f712c9SDave Chinner */
140830f712c9SDave Chinner leafhdr.stale++;
1409163fbbb3SChristoph Hellwig xfs_dir2_leaf_hdr_to_disk(dp->i_mount, leaf, &leafhdr);
141030f712c9SDave Chinner xfs_dir3_leaf_log_header(args, lbp);
141130f712c9SDave Chinner
141230f712c9SDave Chinner lep->address = cpu_to_be32(XFS_DIR2_NULL_DATAPTR);
1413787b0893SChristoph Hellwig xfs_dir3_leaf_log_ents(args, &leafhdr, lbp, index, index);
141430f712c9SDave Chinner
141530f712c9SDave Chinner /*
141630f712c9SDave Chinner * Scan the freespace in the data block again if necessary,
141730f712c9SDave Chinner * log the data block header if necessary.
141830f712c9SDave Chinner */
141930f712c9SDave Chinner if (needscan)
1420ae42976dSChristoph Hellwig xfs_dir2_data_freescan(dp->i_mount, hdr, &needlog);
142130f712c9SDave Chinner if (needlog)
142230f712c9SDave Chinner xfs_dir2_data_log_header(args, dbp);
142330f712c9SDave Chinner /*
142430f712c9SDave Chinner * If the longest freespace in the data block has changed,
142530f712c9SDave Chinner * put the new value in the bests table and log that.
142630f712c9SDave Chinner */
142730f712c9SDave Chinner if (be16_to_cpu(bf[0].length) != oldbest) {
142830f712c9SDave Chinner bestsp[db] = bf[0].length;
142930f712c9SDave Chinner xfs_dir3_leaf_log_bests(args, lbp, db, db);
143030f712c9SDave Chinner }
143130f712c9SDave Chinner xfs_dir3_data_check(dp, dbp);
143230f712c9SDave Chinner /*
143330f712c9SDave Chinner * If the data block is now empty then get rid of the data block.
143430f712c9SDave Chinner */
143530f712c9SDave Chinner if (be16_to_cpu(bf[0].length) ==
1436d73e1ceeSChristoph Hellwig geo->blksize - geo->data_entry_offset) {
1437d73e1ceeSChristoph Hellwig ASSERT(db != geo->datablk);
143830f712c9SDave Chinner if ((error = xfs_dir2_shrink_inode(args, db, dbp))) {
143930f712c9SDave Chinner /*
144030f712c9SDave Chinner * Nope, can't get rid of it because it caused
144130f712c9SDave Chinner * allocation of a bmap btree block to do so.
144230f712c9SDave Chinner * Just go on, returning success, leaving the
144330f712c9SDave Chinner * empty block in place.
144430f712c9SDave Chinner */
14452451337dSDave Chinner if (error == -ENOSPC && args->total == 0)
144630f712c9SDave Chinner error = 0;
144730f712c9SDave Chinner xfs_dir3_leaf_check(dp, lbp);
144830f712c9SDave Chinner return error;
144930f712c9SDave Chinner }
145030f712c9SDave Chinner dbp = NULL;
145130f712c9SDave Chinner /*
145230f712c9SDave Chinner * If this is the last data block then compact the
145330f712c9SDave Chinner * bests table by getting rid of entries.
145430f712c9SDave Chinner */
145530f712c9SDave Chinner if (db == be32_to_cpu(ltp->bestcount) - 1) {
145630f712c9SDave Chinner /*
145730f712c9SDave Chinner * Look for the last active entry (i).
145830f712c9SDave Chinner */
145930f712c9SDave Chinner for (i = db - 1; i > 0; i--) {
146030f712c9SDave Chinner if (bestsp[i] != cpu_to_be16(NULLDATAOFF))
146130f712c9SDave Chinner break;
146230f712c9SDave Chinner }
146330f712c9SDave Chinner /*
146430f712c9SDave Chinner * Copy the table down so inactive entries at the
146530f712c9SDave Chinner * end are removed.
146630f712c9SDave Chinner */
146730f712c9SDave Chinner memmove(&bestsp[db - i], bestsp,
146830f712c9SDave Chinner (be32_to_cpu(ltp->bestcount) - (db - i)) * sizeof(*bestsp));
146930f712c9SDave Chinner be32_add_cpu(<p->bestcount, -(db - i));
147030f712c9SDave Chinner xfs_dir3_leaf_log_tail(args, lbp);
147130f712c9SDave Chinner xfs_dir3_leaf_log_bests(args, lbp, 0,
147230f712c9SDave Chinner be32_to_cpu(ltp->bestcount) - 1);
147330f712c9SDave Chinner } else
147430f712c9SDave Chinner bestsp[db] = cpu_to_be16(NULLDATAOFF);
147530f712c9SDave Chinner }
147630f712c9SDave Chinner /*
147730f712c9SDave Chinner * If the data block was not the first one, drop it.
147830f712c9SDave Chinner */
1479d73e1ceeSChristoph Hellwig else if (db != geo->datablk)
148030f712c9SDave Chinner dbp = NULL;
148130f712c9SDave Chinner
148230f712c9SDave Chinner xfs_dir3_leaf_check(dp, lbp);
148330f712c9SDave Chinner /*
148430f712c9SDave Chinner * See if we can convert to block form.
148530f712c9SDave Chinner */
148630f712c9SDave Chinner return xfs_dir2_leaf_to_block(args, lbp, dbp);
148730f712c9SDave Chinner }
148830f712c9SDave Chinner
148930f712c9SDave Chinner /*
149030f712c9SDave Chinner * Replace the inode number in a leaf format directory entry.
149130f712c9SDave Chinner */
149230f712c9SDave Chinner int /* error */
xfs_dir2_leaf_replace(xfs_da_args_t * args)149330f712c9SDave Chinner xfs_dir2_leaf_replace(
149430f712c9SDave Chinner xfs_da_args_t *args) /* operation arguments */
149530f712c9SDave Chinner {
149630f712c9SDave Chinner struct xfs_buf *dbp; /* data block buffer */
149730f712c9SDave Chinner xfs_dir2_data_entry_t *dep; /* data block entry */
149830f712c9SDave Chinner xfs_inode_t *dp; /* incore directory inode */
149930f712c9SDave Chinner int error; /* error return code */
150030f712c9SDave Chinner int index; /* index of leaf entry */
150130f712c9SDave Chinner struct xfs_buf *lbp; /* leaf buffer */
150230f712c9SDave Chinner xfs_dir2_leaf_entry_t *lep; /* leaf entry */
150330f712c9SDave Chinner xfs_trans_t *tp; /* transaction pointer */
1504787b0893SChristoph Hellwig struct xfs_dir3_icleaf_hdr leafhdr;
150530f712c9SDave Chinner
150630f712c9SDave Chinner trace_xfs_dir2_leaf_replace(args);
150730f712c9SDave Chinner
150830f712c9SDave Chinner /*
150930f712c9SDave Chinner * Look up the entry.
151030f712c9SDave Chinner */
1511787b0893SChristoph Hellwig error = xfs_dir2_leaf_lookup_int(args, &lbp, &index, &dbp, &leafhdr);
1512787b0893SChristoph Hellwig if (error)
151330f712c9SDave Chinner return error;
1514787b0893SChristoph Hellwig
151530f712c9SDave Chinner dp = args->dp;
151630f712c9SDave Chinner /*
151730f712c9SDave Chinner * Point to the leaf entry, get data address from it.
151830f712c9SDave Chinner */
1519787b0893SChristoph Hellwig lep = &leafhdr.ents[index];
152030f712c9SDave Chinner /*
152130f712c9SDave Chinner * Point to the data entry.
152230f712c9SDave Chinner */
152330f712c9SDave Chinner dep = (xfs_dir2_data_entry_t *)
152430f712c9SDave Chinner ((char *)dbp->b_addr +
152530f712c9SDave Chinner xfs_dir2_dataptr_to_off(args->geo, be32_to_cpu(lep->address)));
152630f712c9SDave Chinner ASSERT(args->inumber != be64_to_cpu(dep->inumber));
152730f712c9SDave Chinner /*
152830f712c9SDave Chinner * Put the new inode number in, log it.
152930f712c9SDave Chinner */
153030f712c9SDave Chinner dep->inumber = cpu_to_be64(args->inumber);
153159b8b465SChristoph Hellwig xfs_dir2_data_put_ftype(dp->i_mount, dep, args->filetype);
153230f712c9SDave Chinner tp = args->trans;
153330f712c9SDave Chinner xfs_dir2_data_log_entry(args, dbp, dep);
153430f712c9SDave Chinner xfs_dir3_leaf_check(dp, lbp);
153530f712c9SDave Chinner xfs_trans_brelse(tp, lbp);
153630f712c9SDave Chinner return 0;
153730f712c9SDave Chinner }
153830f712c9SDave Chinner
153930f712c9SDave Chinner /*
154030f712c9SDave Chinner * Return index in the leaf block (lbp) which is either the first
154130f712c9SDave Chinner * one with this hash value, or if there are none, the insert point
154230f712c9SDave Chinner * for that hash value.
154330f712c9SDave Chinner */
154430f712c9SDave Chinner int /* index value */
xfs_dir2_leaf_search_hash(xfs_da_args_t * args,struct xfs_buf * lbp)154530f712c9SDave Chinner xfs_dir2_leaf_search_hash(
154630f712c9SDave Chinner xfs_da_args_t *args, /* operation arguments */
154730f712c9SDave Chinner struct xfs_buf *lbp) /* leaf buffer */
154830f712c9SDave Chinner {
154930f712c9SDave Chinner xfs_dahash_t hash=0; /* hash from this entry */
155030f712c9SDave Chinner xfs_dahash_t hashwant; /* hash value looking for */
155130f712c9SDave Chinner int high; /* high leaf index */
155230f712c9SDave Chinner int low; /* low leaf index */
155330f712c9SDave Chinner xfs_dir2_leaf_entry_t *lep; /* leaf entry */
155430f712c9SDave Chinner int mid=0; /* current leaf index */
155530f712c9SDave Chinner struct xfs_dir3_icleaf_hdr leafhdr;
155630f712c9SDave Chinner
1557787b0893SChristoph Hellwig xfs_dir2_leaf_hdr_from_disk(args->dp->i_mount, &leafhdr, lbp->b_addr);
155830f712c9SDave Chinner
155930f712c9SDave Chinner /*
156030f712c9SDave Chinner * Note, the table cannot be empty, so we have to go through the loop.
156130f712c9SDave Chinner * Binary search the leaf entries looking for our hash value.
156230f712c9SDave Chinner */
1563787b0893SChristoph Hellwig for (lep = leafhdr.ents, low = 0, high = leafhdr.count - 1,
156430f712c9SDave Chinner hashwant = args->hashval;
156530f712c9SDave Chinner low <= high; ) {
156630f712c9SDave Chinner mid = (low + high) >> 1;
156730f712c9SDave Chinner if ((hash = be32_to_cpu(lep[mid].hashval)) == hashwant)
156830f712c9SDave Chinner break;
156930f712c9SDave Chinner if (hash < hashwant)
157030f712c9SDave Chinner low = mid + 1;
157130f712c9SDave Chinner else
157230f712c9SDave Chinner high = mid - 1;
157330f712c9SDave Chinner }
157430f712c9SDave Chinner /*
157530f712c9SDave Chinner * Found one, back up through all the equal hash values.
157630f712c9SDave Chinner */
157730f712c9SDave Chinner if (hash == hashwant) {
157830f712c9SDave Chinner while (mid > 0 && be32_to_cpu(lep[mid - 1].hashval) == hashwant) {
157930f712c9SDave Chinner mid--;
158030f712c9SDave Chinner }
158130f712c9SDave Chinner }
158230f712c9SDave Chinner /*
158330f712c9SDave Chinner * Need to point to an entry higher than ours.
158430f712c9SDave Chinner */
158530f712c9SDave Chinner else if (hash < hashwant)
158630f712c9SDave Chinner mid++;
158730f712c9SDave Chinner return mid;
158830f712c9SDave Chinner }
158930f712c9SDave Chinner
159030f712c9SDave Chinner /*
159130f712c9SDave Chinner * Trim off a trailing data block. We know it's empty since the leaf
159230f712c9SDave Chinner * freespace table says so.
159330f712c9SDave Chinner */
159430f712c9SDave Chinner int /* error */
xfs_dir2_leaf_trim_data(xfs_da_args_t * args,struct xfs_buf * lbp,xfs_dir2_db_t db)159530f712c9SDave Chinner xfs_dir2_leaf_trim_data(
159630f712c9SDave Chinner xfs_da_args_t *args, /* operation arguments */
159730f712c9SDave Chinner struct xfs_buf *lbp, /* leaf buffer */
159830f712c9SDave Chinner xfs_dir2_db_t db) /* data block number */
159930f712c9SDave Chinner {
1600d73e1ceeSChristoph Hellwig struct xfs_da_geometry *geo = args->geo;
160130f712c9SDave Chinner __be16 *bestsp; /* leaf bests table */
160230f712c9SDave Chinner struct xfs_buf *dbp; /* data block buffer */
160330f712c9SDave Chinner xfs_inode_t *dp; /* incore directory inode */
160430f712c9SDave Chinner int error; /* error return value */
160530f712c9SDave Chinner xfs_dir2_leaf_t *leaf; /* leaf structure */
160630f712c9SDave Chinner xfs_dir2_leaf_tail_t *ltp; /* leaf tail structure */
160730f712c9SDave Chinner xfs_trans_t *tp; /* transaction pointer */
160830f712c9SDave Chinner
160930f712c9SDave Chinner dp = args->dp;
161030f712c9SDave Chinner tp = args->trans;
161130f712c9SDave Chinner /*
161230f712c9SDave Chinner * Read the offending data block. We need its buffer.
161330f712c9SDave Chinner */
1614cd2c9f1bSChristoph Hellwig error = xfs_dir3_data_read(tp, dp, xfs_dir2_db_to_da(geo, db), 0, &dbp);
161530f712c9SDave Chinner if (error)
161630f712c9SDave Chinner return error;
161730f712c9SDave Chinner
161830f712c9SDave Chinner leaf = lbp->b_addr;
1619d73e1ceeSChristoph Hellwig ltp = xfs_dir2_leaf_tail_p(geo, leaf);
162030f712c9SDave Chinner
162130f712c9SDave Chinner #ifdef DEBUG
162230f712c9SDave Chinner {
162330f712c9SDave Chinner struct xfs_dir2_data_hdr *hdr = dbp->b_addr;
16241848b607SChristoph Hellwig struct xfs_dir2_data_free *bf =
16251848b607SChristoph Hellwig xfs_dir2_data_bestfree_p(dp->i_mount, hdr);
162630f712c9SDave Chinner
162730f712c9SDave Chinner ASSERT(hdr->magic == cpu_to_be32(XFS_DIR2_DATA_MAGIC) ||
162830f712c9SDave Chinner hdr->magic == cpu_to_be32(XFS_DIR3_DATA_MAGIC));
162930f712c9SDave Chinner ASSERT(be16_to_cpu(bf[0].length) ==
1630d73e1ceeSChristoph Hellwig geo->blksize - geo->data_entry_offset);
163130f712c9SDave Chinner ASSERT(db == be32_to_cpu(ltp->bestcount) - 1);
163230f712c9SDave Chinner }
163330f712c9SDave Chinner #endif
163430f712c9SDave Chinner
163530f712c9SDave Chinner /*
163630f712c9SDave Chinner * Get rid of the data block.
163730f712c9SDave Chinner */
163830f712c9SDave Chinner if ((error = xfs_dir2_shrink_inode(args, db, dbp))) {
16392451337dSDave Chinner ASSERT(error != -ENOSPC);
164030f712c9SDave Chinner xfs_trans_brelse(tp, dbp);
164130f712c9SDave Chinner return error;
164230f712c9SDave Chinner }
164330f712c9SDave Chinner /*
164430f712c9SDave Chinner * Eliminate the last bests entry from the table.
164530f712c9SDave Chinner */
164630f712c9SDave Chinner bestsp = xfs_dir2_leaf_bests_p(ltp);
164730f712c9SDave Chinner be32_add_cpu(<p->bestcount, -1);
164830f712c9SDave Chinner memmove(&bestsp[1], &bestsp[0], be32_to_cpu(ltp->bestcount) * sizeof(*bestsp));
164930f712c9SDave Chinner xfs_dir3_leaf_log_tail(args, lbp);
165030f712c9SDave Chinner xfs_dir3_leaf_log_bests(args, lbp, 0, be32_to_cpu(ltp->bestcount) - 1);
165130f712c9SDave Chinner return 0;
165230f712c9SDave Chinner }
165330f712c9SDave Chinner
165430f712c9SDave Chinner static inline size_t
xfs_dir3_leaf_size(struct xfs_dir3_icleaf_hdr * hdr,int counts)165530f712c9SDave Chinner xfs_dir3_leaf_size(
165630f712c9SDave Chinner struct xfs_dir3_icleaf_hdr *hdr,
165730f712c9SDave Chinner int counts)
165830f712c9SDave Chinner {
165930f712c9SDave Chinner int entries;
166030f712c9SDave Chinner int hdrsize;
166130f712c9SDave Chinner
166230f712c9SDave Chinner entries = hdr->count - hdr->stale;
166330f712c9SDave Chinner if (hdr->magic == XFS_DIR2_LEAF1_MAGIC ||
166430f712c9SDave Chinner hdr->magic == XFS_DIR2_LEAFN_MAGIC)
166530f712c9SDave Chinner hdrsize = sizeof(struct xfs_dir2_leaf_hdr);
166630f712c9SDave Chinner else
166730f712c9SDave Chinner hdrsize = sizeof(struct xfs_dir3_leaf_hdr);
166830f712c9SDave Chinner
166930f712c9SDave Chinner return hdrsize + entries * sizeof(xfs_dir2_leaf_entry_t)
167030f712c9SDave Chinner + counts * sizeof(xfs_dir2_data_off_t)
167130f712c9SDave Chinner + sizeof(xfs_dir2_leaf_tail_t);
167230f712c9SDave Chinner }
167330f712c9SDave Chinner
167430f712c9SDave Chinner /*
167530f712c9SDave Chinner * Convert node form directory to leaf form directory.
167630f712c9SDave Chinner * The root of the node form dir needs to already be a LEAFN block.
167730f712c9SDave Chinner * Just return if we can't do anything.
167830f712c9SDave Chinner */
167930f712c9SDave Chinner int /* error */
xfs_dir2_node_to_leaf(xfs_da_state_t * state)168030f712c9SDave Chinner xfs_dir2_node_to_leaf(
168130f712c9SDave Chinner xfs_da_state_t *state) /* directory operation state */
168230f712c9SDave Chinner {
168330f712c9SDave Chinner xfs_da_args_t *args; /* operation arguments */
168430f712c9SDave Chinner xfs_inode_t *dp; /* incore directory inode */
168530f712c9SDave Chinner int error; /* error return code */
168630f712c9SDave Chinner struct xfs_buf *fbp; /* buffer for freespace block */
168730f712c9SDave Chinner xfs_fileoff_t fo; /* freespace file offset */
168830f712c9SDave Chinner struct xfs_buf *lbp; /* buffer for leaf block */
168930f712c9SDave Chinner xfs_dir2_leaf_tail_t *ltp; /* tail of leaf structure */
169030f712c9SDave Chinner xfs_dir2_leaf_t *leaf; /* leaf structure */
169130f712c9SDave Chinner xfs_mount_t *mp; /* filesystem mount point */
169230f712c9SDave Chinner int rval; /* successful free trim? */
169330f712c9SDave Chinner xfs_trans_t *tp; /* transaction pointer */
169430f712c9SDave Chinner struct xfs_dir3_icleaf_hdr leafhdr;
169530f712c9SDave Chinner struct xfs_dir3_icfree_hdr freehdr;
169630f712c9SDave Chinner
169730f712c9SDave Chinner /*
169830f712c9SDave Chinner * There's more than a leaf level in the btree, so there must
169930f712c9SDave Chinner * be multiple leafn blocks. Give up.
170030f712c9SDave Chinner */
170130f712c9SDave Chinner if (state->path.active > 1)
170230f712c9SDave Chinner return 0;
170330f712c9SDave Chinner args = state->args;
170430f712c9SDave Chinner
170530f712c9SDave Chinner trace_xfs_dir2_node_to_leaf(args);
170630f712c9SDave Chinner
170730f712c9SDave Chinner mp = state->mp;
170830f712c9SDave Chinner dp = args->dp;
170930f712c9SDave Chinner tp = args->trans;
171030f712c9SDave Chinner /*
171130f712c9SDave Chinner * Get the last offset in the file.
171230f712c9SDave Chinner */
171330f712c9SDave Chinner if ((error = xfs_bmap_last_offset(dp, &fo, XFS_DATA_FORK))) {
171430f712c9SDave Chinner return error;
171530f712c9SDave Chinner }
171630f712c9SDave Chinner fo -= args->geo->fsbcount;
171730f712c9SDave Chinner /*
171830f712c9SDave Chinner * If there are freespace blocks other than the first one,
171930f712c9SDave Chinner * take this opportunity to remove trailing empty freespace blocks
172030f712c9SDave Chinner * that may have been left behind during no-space-reservation
172130f712c9SDave Chinner * operations.
172230f712c9SDave Chinner */
172330f712c9SDave Chinner while (fo > args->geo->freeblk) {
172430f712c9SDave Chinner if ((error = xfs_dir2_node_trim_free(args, fo, &rval))) {
172530f712c9SDave Chinner return error;
172630f712c9SDave Chinner }
172730f712c9SDave Chinner if (rval)
172830f712c9SDave Chinner fo -= args->geo->fsbcount;
172930f712c9SDave Chinner else
173030f712c9SDave Chinner return 0;
173130f712c9SDave Chinner }
173230f712c9SDave Chinner /*
173330f712c9SDave Chinner * Now find the block just before the freespace block.
173430f712c9SDave Chinner */
173530f712c9SDave Chinner if ((error = xfs_bmap_last_before(tp, dp, &fo, XFS_DATA_FORK))) {
173630f712c9SDave Chinner return error;
173730f712c9SDave Chinner }
173830f712c9SDave Chinner /*
173930f712c9SDave Chinner * If it's not the single leaf block, give up.
174030f712c9SDave Chinner */
174130f712c9SDave Chinner if (XFS_FSB_TO_B(mp, fo) > XFS_DIR2_LEAF_OFFSET + args->geo->blksize)
174230f712c9SDave Chinner return 0;
174330f712c9SDave Chinner lbp = state->path.blk[0].bp;
174430f712c9SDave Chinner leaf = lbp->b_addr;
174551842556SChristoph Hellwig xfs_dir2_leaf_hdr_from_disk(mp, &leafhdr, leaf);
174630f712c9SDave Chinner
174730f712c9SDave Chinner ASSERT(leafhdr.magic == XFS_DIR2_LEAFN_MAGIC ||
174830f712c9SDave Chinner leafhdr.magic == XFS_DIR3_LEAFN_MAGIC);
174930f712c9SDave Chinner
175030f712c9SDave Chinner /*
175130f712c9SDave Chinner * Read the freespace block.
175230f712c9SDave Chinner */
175330f712c9SDave Chinner error = xfs_dir2_free_read(tp, dp, args->geo->freeblk, &fbp);
175430f712c9SDave Chinner if (error)
175530f712c9SDave Chinner return error;
1756a84f3d5cSChristoph Hellwig xfs_dir2_free_hdr_from_disk(mp, &freehdr, fbp->b_addr);
175730f712c9SDave Chinner
175830f712c9SDave Chinner ASSERT(!freehdr.firstdb);
175930f712c9SDave Chinner
176030f712c9SDave Chinner /*
176130f712c9SDave Chinner * Now see if the leafn and free data will fit in a leaf1.
176230f712c9SDave Chinner * If not, release the buffer and give up.
176330f712c9SDave Chinner */
176430f712c9SDave Chinner if (xfs_dir3_leaf_size(&leafhdr, freehdr.nvalid) > args->geo->blksize) {
176530f712c9SDave Chinner xfs_trans_brelse(tp, fbp);
176630f712c9SDave Chinner return 0;
176730f712c9SDave Chinner }
176830f712c9SDave Chinner
176930f712c9SDave Chinner /*
177030f712c9SDave Chinner * If the leaf has any stale entries in it, compress them out.
177130f712c9SDave Chinner */
177230f712c9SDave Chinner if (leafhdr.stale)
177330f712c9SDave Chinner xfs_dir3_leaf_compact(args, &leafhdr, lbp);
177430f712c9SDave Chinner
177530f712c9SDave Chinner lbp->b_ops = &xfs_dir3_leaf1_buf_ops;
177630f712c9SDave Chinner xfs_trans_buf_set_type(tp, lbp, XFS_BLFT_DIR_LEAF1_BUF);
177730f712c9SDave Chinner leafhdr.magic = (leafhdr.magic == XFS_DIR2_LEAFN_MAGIC)
177830f712c9SDave Chinner ? XFS_DIR2_LEAF1_MAGIC
177930f712c9SDave Chinner : XFS_DIR3_LEAF1_MAGIC;
178030f712c9SDave Chinner
178130f712c9SDave Chinner /*
178230f712c9SDave Chinner * Set up the leaf tail from the freespace block.
178330f712c9SDave Chinner */
178430f712c9SDave Chinner ltp = xfs_dir2_leaf_tail_p(args->geo, leaf);
178530f712c9SDave Chinner ltp->bestcount = cpu_to_be32(freehdr.nvalid);
178630f712c9SDave Chinner
178730f712c9SDave Chinner /*
178830f712c9SDave Chinner * Set up the leaf bests table.
178930f712c9SDave Chinner */
1790a84f3d5cSChristoph Hellwig memcpy(xfs_dir2_leaf_bests_p(ltp), freehdr.bests,
179130f712c9SDave Chinner freehdr.nvalid * sizeof(xfs_dir2_data_off_t));
179230f712c9SDave Chinner
1793163fbbb3SChristoph Hellwig xfs_dir2_leaf_hdr_to_disk(mp, leaf, &leafhdr);
179430f712c9SDave Chinner xfs_dir3_leaf_log_header(args, lbp);
179530f712c9SDave Chinner xfs_dir3_leaf_log_bests(args, lbp, 0, be32_to_cpu(ltp->bestcount) - 1);
179630f712c9SDave Chinner xfs_dir3_leaf_log_tail(args, lbp);
179730f712c9SDave Chinner xfs_dir3_leaf_check(dp, lbp);
179830f712c9SDave Chinner
179930f712c9SDave Chinner /*
180030f712c9SDave Chinner * Get rid of the freespace block.
180130f712c9SDave Chinner */
180230f712c9SDave Chinner error = xfs_dir2_shrink_inode(args,
180330f712c9SDave Chinner xfs_dir2_byte_to_db(args->geo, XFS_DIR2_FREE_OFFSET),
180430f712c9SDave Chinner fbp);
180530f712c9SDave Chinner if (error) {
180630f712c9SDave Chinner /*
180730f712c9SDave Chinner * This can't fail here because it can only happen when
180830f712c9SDave Chinner * punching out the middle of an extent, and this is an
180930f712c9SDave Chinner * isolated block.
181030f712c9SDave Chinner */
18112451337dSDave Chinner ASSERT(error != -ENOSPC);
181230f712c9SDave Chinner return error;
181330f712c9SDave Chinner }
181430f712c9SDave Chinner fbp = NULL;
181530f712c9SDave Chinner /*
181630f712c9SDave Chinner * Now see if we can convert the single-leaf directory
181730f712c9SDave Chinner * down to a block form directory.
181830f712c9SDave Chinner * This routine always kills the dabuf for the leaf, so
181930f712c9SDave Chinner * eliminate it from the path.
182030f712c9SDave Chinner */
182130f712c9SDave Chinner error = xfs_dir2_leaf_to_block(args, lbp, NULL);
182230f712c9SDave Chinner state->path.blk[0].bp = NULL;
182330f712c9SDave Chinner return error;
182430f712c9SDave Chinner }
1825