xref: /linux/drivers/md/dm-vdo/status-codes.h (revision a9da0fb6)
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 */
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 */
87