drivers/md/dm-vdo/status-codes.h

   1 /* SPDX-License-Identifier: GPL-2.0-only */
   2 /*
   3  * Copyright 2023 Red Hat
   4  */
   5
   6 #ifndef VDO_STATUS_CODES_H
   7 #define VDO_STATUS_CODES_H
   8
   9 #include "errors.h"
  10
  11 enum {
  12         UDS_ERRORS_BLOCK_SIZE = UDS_ERROR_CODE_BLOCK_END - UDS_ERROR_CODE_BASE,
  13         VDO_ERRORS_BLOCK_START = UDS_ERROR_CODE_BLOCK_END,
  14         VDO_ERRORS_BLOCK_END = VDO_ERRORS_BLOCK_START + UDS_ERRORS_BLOCK_SIZE,
  15 };
  16
  17 /* VDO-specific status codes. */
  18 enum vdo_status_codes {
  19         /* base of all VDO errors */
  20         VDO_STATUS_CODE_BASE = VDO_ERRORS_BLOCK_START,
  21         /* we haven't written this yet */
  22         VDO_NOT_IMPLEMENTED = VDO_STATUS_CODE_BASE,
  23         /* input out of range */
  24         VDO_OUT_OF_RANGE,
  25         /* an invalid reference count would result */
  26         VDO_REF_COUNT_INVALID,
  27         /* a free block could not be allocated */
  28         VDO_NO_SPACE,
  29         /* improper or missing configuration option */
  30         VDO_BAD_CONFIGURATION,
  31         /* prior operation still in progress */
  32         VDO_COMPONENT_BUSY,
  33         /* page contents incorrect or corrupt data */
  34         VDO_BAD_PAGE,
  35         /* unsupported version of some component */
  36         VDO_UNSUPPORTED_VERSION,
  37         /* component id mismatch in decoder */
  38         VDO_INCORRECT_COMPONENT,
  39         /* parameters have conflicting values */
  40         VDO_PARAMETER_MISMATCH,
  41         /* no partition exists with a given id */
  42         VDO_UNKNOWN_PARTITION,
  43         /* a partition already exists with a given id */
  44         VDO_PARTITION_EXISTS,
  45         /* physical block growth of too few blocks */
  46         VDO_INCREMENT_TOO_SMALL,
  47         /* incorrect checksum */
  48         VDO_CHECKSUM_MISMATCH,
  49         /* a lock is held incorrectly */
  50         VDO_LOCK_ERROR,
  51         /* the VDO is in read-only mode */
  52         VDO_READ_ONLY,
  53         /* the VDO is shutting down */
  54         VDO_SHUTTING_DOWN,
  55         /* the recovery journal has corrupt entries or corrupt metadata */
  56         VDO_CORRUPT_JOURNAL,
  57         /* exceeds maximum number of slabs supported */
  58         VDO_TOO_MANY_SLABS,
  59         /* a compressed block fragment is invalid */
  60         VDO_INVALID_FRAGMENT,
  61         /* action is unsupported while rebuilding */
  62         VDO_RETRY_AFTER_REBUILD,
  63         /* a block map entry is invalid */
  64         VDO_BAD_MAPPING,
  65         /* bio_add_page failed */
  66         VDO_BIO_CREATION_FAILED,
  67         /* bad magic number */
  68         VDO_BAD_MAGIC,
  69         /* bad nonce */
  70         VDO_BAD_NONCE,
  71         /* sequence number overflow */
  72         VDO_JOURNAL_OVERFLOW,
  73         /* the VDO is not in a state to perform an admin operation */
  74         VDO_INVALID_ADMIN_STATE,
  75         /* one more than last error code */
  76         VDO_STATUS_CODE_LAST,
  77         VDO_STATUS_CODE_BLOCK_END = VDO_ERRORS_BLOCK_END
  78 };
  79
  80 extern const struct error_info vdo_status_list[];
  81
  82 int vdo_register_status_codes(void);
  83
  84 int vdo_status_to_errno(int error);
  85
  86 #endif /* VDO_STATUS_CODES_H */