1 /*
2 * Copyright (c) 2000 Silicon Graphics, Inc. All Rights Reserved.
3 *
4 * This program is free software; you can redistribute it and/or modify it
5 * under the terms of version 2 of the GNU General Public License as
6 * published by the Free Software Foundation.
7 *
8 * This program is distributed in the hope that it would be useful, but
9 * WITHOUT ANY WARRANTY; without even the implied warranty of
10 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
11 *
12 * Further, this software is distributed without any warranty that it is
13 * free of the rightful claim of any third person regarding infringement
14 * or the like. Any license provided herein, whether implied or
15 * otherwise, applies only to this software file. Patent licenses, if
16 * any, provided herein do not apply to combinations of this program with
17 * other software, or any other product whatsoever.
18 *
19 * You should have received a copy of the GNU General Public License along
20 * with this program; if not, write the Free Software Foundation, Inc., 59
21 * Temple Place - Suite 330, Boston MA 02111-1307, USA.
22 *
23 * Contact information: Silicon Graphics, Inc., 1600 Amphitheatre Pkwy,
24 * Mountain View, CA 94043, or:
25 *
26 * http://www.sgi.com
27 *
28 * For further information regarding this notice, see:
29 *
30 * http://oss.sgi.com/projects/GenInfo/SGIGPLNoticeExplan/
31 */
32
33 #include "xfs.h"
34 #include "xfs_macros.h"
35 #include "xfs_types.h"
36 #include "xfs_inum.h"
37 #include "xfs_log.h"
38 #include "xfs_trans.h"
39 #include "xfs_sb.h"
40 #include "xfs_dir.h"
41 #include "xfs_dmapi.h"
42 #include "xfs_mount.h"
43 #include "xfs_trans_priv.h"
44 #include "xfs_extfree_item.h"
45
46 /*
47 * This routine is called to allocate an "extent free intention"
48 * log item that will hold nextents worth of extents. The
49 * caller must use all nextents extents, because we are not
50 * flexible about this at all.
51 */
52 xfs_efi_log_item_t *
xfs_trans_get_efi(xfs_trans_t * tp,uint nextents)53 xfs_trans_get_efi(xfs_trans_t *tp,
54 uint nextents)
55 {
56 xfs_efi_log_item_t *efip;
57
58 ASSERT(tp != NULL);
59 ASSERT(nextents > 0);
60
61 efip = xfs_efi_init(tp->t_mountp, nextents);
62 ASSERT(efip != NULL);
63
64 /*
65 * Get a log_item_desc to point at the new item.
66 */
67 (void) xfs_trans_add_item(tp, (xfs_log_item_t*)efip);
68
69 return (efip);
70 }
71
72 /*
73 * This routine is called to indicate that the described
74 * extent is to be logged as needing to be freed. It should
75 * be called once for each extent to be freed.
76 */
77 void
xfs_trans_log_efi_extent(xfs_trans_t * tp,xfs_efi_log_item_t * efip,xfs_fsblock_t start_block,xfs_extlen_t ext_len)78 xfs_trans_log_efi_extent(xfs_trans_t *tp,
79 xfs_efi_log_item_t *efip,
80 xfs_fsblock_t start_block,
81 xfs_extlen_t ext_len)
82 {
83 xfs_log_item_desc_t *lidp;
84 uint next_extent;
85 xfs_extent_t *extp;
86
87 lidp = xfs_trans_find_item(tp, (xfs_log_item_t*)efip);
88 ASSERT(lidp != NULL);
89
90 tp->t_flags |= XFS_TRANS_DIRTY;
91 lidp->lid_flags |= XFS_LID_DIRTY;
92
93 next_extent = efip->efi_next_extent;
94 ASSERT(next_extent < efip->efi_format.efi_nextents);
95 extp = &(efip->efi_format.efi_extents[next_extent]);
96 extp->ext_start = start_block;
97 extp->ext_len = ext_len;
98 efip->efi_next_extent++;
99 }
100
101
102 /*
103 * This routine is called to allocate an "extent free done"
104 * log item that will hold nextents worth of extents. The
105 * caller must use all nextents extents, because we are not
106 * flexible about this at all.
107 */
108 xfs_efd_log_item_t *
xfs_trans_get_efd(xfs_trans_t * tp,xfs_efi_log_item_t * efip,uint nextents)109 xfs_trans_get_efd(xfs_trans_t *tp,
110 xfs_efi_log_item_t *efip,
111 uint nextents)
112 {
113 xfs_efd_log_item_t *efdp;
114
115 ASSERT(tp != NULL);
116 ASSERT(nextents > 0);
117
118 efdp = xfs_efd_init(tp->t_mountp, efip, nextents);
119 ASSERT(efdp != NULL);
120
121 /*
122 * Get a log_item_desc to point at the new item.
123 */
124 (void) xfs_trans_add_item(tp, (xfs_log_item_t*)efdp);
125
126 return (efdp);
127 }
128
129 /*
130 * This routine is called to indicate that the described
131 * extent is to be logged as having been freed. It should
132 * be called once for each extent freed.
133 */
134 void
xfs_trans_log_efd_extent(xfs_trans_t * tp,xfs_efd_log_item_t * efdp,xfs_fsblock_t start_block,xfs_extlen_t ext_len)135 xfs_trans_log_efd_extent(xfs_trans_t *tp,
136 xfs_efd_log_item_t *efdp,
137 xfs_fsblock_t start_block,
138 xfs_extlen_t ext_len)
139 {
140 xfs_log_item_desc_t *lidp;
141 uint next_extent;
142 xfs_extent_t *extp;
143
144 lidp = xfs_trans_find_item(tp, (xfs_log_item_t*)efdp);
145 ASSERT(lidp != NULL);
146
147 tp->t_flags |= XFS_TRANS_DIRTY;
148 lidp->lid_flags |= XFS_LID_DIRTY;
149
150 next_extent = efdp->efd_next_extent;
151 ASSERT(next_extent < efdp->efd_format.efd_nextents);
152 extp = &(efdp->efd_format.efd_extents[next_extent]);
153 extp->ext_start = start_block;
154 extp->ext_len = ext_len;
155 efdp->efd_next_extent++;
156 }
157