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// SPDX-License-Identifier: GPL-2.0
/*
* Copyright (c) 2023-2025 Christoph Hellwig.
* Copyright (c) 2024-2025, Western Digital Corporation or its affiliates.
*/
#include "xfs_platform.h"
#include "xfs_fs.h"
#include "xfs_shared.h"
#include "xfs_format.h"
#include "xfs_log_format.h"
#include "xfs_trans_resv.h"
#include "xfs_mount.h"
#include "xfs_inode.h"
#include "xfs_rtgroup.h"
#include "xfs_zones.h"
static bool
xfs_validate_blk_zone_seq(
struct xfs_mount *mp,
struct blk_zone *zone,
unsigned int zone_no,
xfs_rgblock_t *write_pointer)
{
switch (zone->cond) {
case BLK_ZONE_COND_EMPTY:
*write_pointer = 0;
return true;
case BLK_ZONE_COND_IMP_OPEN:
case BLK_ZONE_COND_EXP_OPEN:
case BLK_ZONE_COND_CLOSED:
case BLK_ZONE_COND_ACTIVE:
if (zone->wp < zone->start ||
zone->wp >= zone->start + zone->capacity) {
xfs_warn(mp,
"zone %u write pointer (%llu) outside of zone.",
zone_no, zone->wp);
return false;
}
*write_pointer = XFS_BB_TO_FSB(mp, zone->wp - zone->start);
return true;
case BLK_ZONE_COND_FULL:
*write_pointer = XFS_BB_TO_FSB(mp, zone->capacity);
return true;
case BLK_ZONE_COND_NOT_WP:
case BLK_ZONE_COND_OFFLINE:
case BLK_ZONE_COND_READONLY:
xfs_warn(mp, "zone %u has unsupported zone condition 0x%x.",
zone_no, zone->cond);
return false;
default:
xfs_warn(mp, "zone %u has unknown zone condition 0x%x.",
zone_no, zone->cond);
return false;
}
}
static bool
xfs_validate_blk_zone_conv(
struct xfs_mount *mp,
struct blk_zone *zone,
unsigned int zone_no)
{
switch (zone->cond) {
case BLK_ZONE_COND_NOT_WP:
return true;
default:
xfs_warn(mp,
"conventional zone %u has unsupported zone condition 0x%x.",
zone_no, zone->cond);
return false;
}
}
bool
xfs_validate_blk_zone(
struct xfs_mount *mp,
struct blk_zone *zone,
unsigned int zone_no,
uint32_t expected_size,
uint32_t expected_capacity,
xfs_rgblock_t *write_pointer)
{
/*
* Check that the zone capacity matches the rtgroup size stored in the
* superblock. Note that all zones including the last one must have a
* uniform capacity.
*/
if (XFS_BB_TO_FSB(mp, zone->capacity) != expected_capacity) {
xfs_warn(mp,
"zone %u capacity (%llu) does not match RT group size (%u).",
zone_no, XFS_BB_TO_FSB(mp, zone->capacity),
expected_capacity);
return false;
}
if (XFS_BB_TO_FSB(mp, zone->len) != expected_size) {
xfs_warn(mp,
"zone %u length (%llu) does not match geometry (%u).",
zone_no, XFS_BB_TO_FSB(mp, zone->len),
expected_size);
return false;
}
switch (zone->type) {
case BLK_ZONE_TYPE_CONVENTIONAL:
return xfs_validate_blk_zone_conv(mp, zone, zone_no);
case BLK_ZONE_TYPE_SEQWRITE_REQ:
return xfs_validate_blk_zone_seq(mp, zone, zone_no,
write_pointer);
default:
xfs_warn(mp, "zoned %u has unsupported type 0x%x.",
zone_no, zone->type);
return false;
}
}
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