1 // SPDX-License-Identifier: GPL-2.0 2 /* 3 * Copyright (c) 2023-2025 Christoph Hellwig. 4 * Copyright (c) 2024-2025, Western Digital Corporation or its affiliates. 5 */ 6 #include "xfs.h" 7 #include "xfs_fs.h" 8 #include "xfs_shared.h" 9 #include "xfs_format.h" 10 #include "xfs_log_format.h" 11 #include "xfs_trans_resv.h" 12 #include "xfs_mount.h" 13 #include "xfs_inode.h" 14 #include "xfs_rtgroup.h" 15 #include "xfs_zones.h" 16 17 static bool 18 xfs_zone_validate_empty( 19 struct blk_zone *zone, 20 struct xfs_rtgroup *rtg, 21 xfs_rgblock_t *write_pointer) 22 { 23 struct xfs_mount *mp = rtg_mount(rtg); 24 25 if (rtg_rmap(rtg)->i_used_blocks > 0) { 26 xfs_warn(mp, "empty zone %u has non-zero used counter (0x%x).", 27 rtg_rgno(rtg), rtg_rmap(rtg)->i_used_blocks); 28 return false; 29 } 30 31 *write_pointer = 0; 32 return true; 33 } 34 35 static bool 36 xfs_zone_validate_wp( 37 struct blk_zone *zone, 38 struct xfs_rtgroup *rtg, 39 xfs_rgblock_t *write_pointer) 40 { 41 struct xfs_mount *mp = rtg_mount(rtg); 42 xfs_rtblock_t wp_fsb = xfs_daddr_to_rtb(mp, zone->wp); 43 44 if (rtg_rmap(rtg)->i_used_blocks > rtg->rtg_extents) { 45 xfs_warn(mp, "zone %u has too large used counter (0x%x).", 46 rtg_rgno(rtg), rtg_rmap(rtg)->i_used_blocks); 47 return false; 48 } 49 50 if (xfs_rtb_to_rgno(mp, wp_fsb) != rtg_rgno(rtg)) { 51 xfs_warn(mp, "zone %u write pointer (0x%llx) outside of zone.", 52 rtg_rgno(rtg), wp_fsb); 53 return false; 54 } 55 56 *write_pointer = xfs_rtb_to_rgbno(mp, wp_fsb); 57 if (*write_pointer >= rtg->rtg_extents) { 58 xfs_warn(mp, "zone %u has invalid write pointer (0x%x).", 59 rtg_rgno(rtg), *write_pointer); 60 return false; 61 } 62 63 return true; 64 } 65 66 static bool 67 xfs_zone_validate_full( 68 struct blk_zone *zone, 69 struct xfs_rtgroup *rtg, 70 xfs_rgblock_t *write_pointer) 71 { 72 struct xfs_mount *mp = rtg_mount(rtg); 73 74 if (rtg_rmap(rtg)->i_used_blocks > rtg->rtg_extents) { 75 xfs_warn(mp, "zone %u has too large used counter (0x%x).", 76 rtg_rgno(rtg), rtg_rmap(rtg)->i_used_blocks); 77 return false; 78 } 79 80 *write_pointer = rtg->rtg_extents; 81 return true; 82 } 83 84 static bool 85 xfs_zone_validate_seq( 86 struct blk_zone *zone, 87 struct xfs_rtgroup *rtg, 88 xfs_rgblock_t *write_pointer) 89 { 90 struct xfs_mount *mp = rtg_mount(rtg); 91 92 switch (zone->cond) { 93 case BLK_ZONE_COND_EMPTY: 94 return xfs_zone_validate_empty(zone, rtg, write_pointer); 95 case BLK_ZONE_COND_IMP_OPEN: 96 case BLK_ZONE_COND_EXP_OPEN: 97 case BLK_ZONE_COND_CLOSED: 98 return xfs_zone_validate_wp(zone, rtg, write_pointer); 99 case BLK_ZONE_COND_FULL: 100 return xfs_zone_validate_full(zone, rtg, write_pointer); 101 case BLK_ZONE_COND_NOT_WP: 102 case BLK_ZONE_COND_OFFLINE: 103 case BLK_ZONE_COND_READONLY: 104 xfs_warn(mp, "zone %u has unsupported zone condition 0x%x.", 105 rtg_rgno(rtg), zone->cond); 106 return false; 107 default: 108 xfs_warn(mp, "zone %u has unknown zone condition 0x%x.", 109 rtg_rgno(rtg), zone->cond); 110 return false; 111 } 112 } 113 114 static bool 115 xfs_zone_validate_conv( 116 struct blk_zone *zone, 117 struct xfs_rtgroup *rtg) 118 { 119 struct xfs_mount *mp = rtg_mount(rtg); 120 121 switch (zone->cond) { 122 case BLK_ZONE_COND_NOT_WP: 123 return true; 124 default: 125 xfs_warn(mp, 126 "conventional zone %u has unsupported zone condition 0x%x.", 127 rtg_rgno(rtg), zone->cond); 128 return false; 129 } 130 } 131 132 bool 133 xfs_zone_validate( 134 struct blk_zone *zone, 135 struct xfs_rtgroup *rtg, 136 xfs_rgblock_t *write_pointer) 137 { 138 struct xfs_mount *mp = rtg_mount(rtg); 139 struct xfs_groups *g = &mp->m_groups[XG_TYPE_RTG]; 140 uint32_t expected_size; 141 142 /* 143 * Check that the zone capacity matches the rtgroup size stored in the 144 * superblock. Note that all zones including the last one must have a 145 * uniform capacity. 146 */ 147 if (XFS_BB_TO_FSB(mp, zone->capacity) != g->blocks) { 148 xfs_warn(mp, 149 "zone %u capacity (0x%llx) does not match RT group size (0x%x).", 150 rtg_rgno(rtg), XFS_BB_TO_FSB(mp, zone->capacity), 151 g->blocks); 152 return false; 153 } 154 155 if (g->has_daddr_gaps) { 156 expected_size = 1 << g->blklog; 157 } else { 158 if (zone->len != zone->capacity) { 159 xfs_warn(mp, 160 "zone %u has capacity != size ((0x%llx vs 0x%llx)", 161 rtg_rgno(rtg), 162 XFS_BB_TO_FSB(mp, zone->len), 163 XFS_BB_TO_FSB(mp, zone->capacity)); 164 return false; 165 } 166 expected_size = g->blocks; 167 } 168 169 if (XFS_BB_TO_FSB(mp, zone->len) != expected_size) { 170 xfs_warn(mp, 171 "zone %u length (0x%llx) does match geometry (0x%x).", 172 rtg_rgno(rtg), XFS_BB_TO_FSB(mp, zone->len), 173 expected_size); 174 } 175 176 switch (zone->type) { 177 case BLK_ZONE_TYPE_CONVENTIONAL: 178 return xfs_zone_validate_conv(zone, rtg); 179 case BLK_ZONE_TYPE_SEQWRITE_REQ: 180 return xfs_zone_validate_seq(zone, rtg, write_pointer); 181 default: 182 xfs_warn(mp, "zoned %u has unsupported type 0x%x.", 183 rtg_rgno(rtg), zone->type); 184 return false; 185 } 186 } 187