1 // SPDX-License-Identifier: GPL-2.0-only 2 /* 3 * Copyright 2023 Red Hat 4 */ 5 6 #include "status-codes.h" 7 8 #include "errors.h" 9 #include "logger.h" 10 #include "permassert.h" 11 #include "thread-utils.h" 12 13 const struct error_info vdo_status_list[] = { 14 { "VDO_NOT_IMPLEMENTED", "Not implemented" }, 15 { "VDO_OUT_OF_RANGE", "Out of range" }, 16 { "VDO_REF_COUNT_INVALID", "Reference count would become invalid" }, 17 { "VDO_NO_SPACE", "Out of space" }, 18 { "VDO_BAD_CONFIGURATION", "Bad configuration option" }, 19 { "VDO_COMPONENT_BUSY", "Prior operation still in progress" }, 20 { "VDO_BAD_PAGE", "Corrupt or incorrect page" }, 21 { "VDO_UNSUPPORTED_VERSION", "Unsupported component version" }, 22 { "VDO_INCORRECT_COMPONENT", "Component id mismatch in decoder" }, 23 { "VDO_PARAMETER_MISMATCH", "Parameters have conflicting values" }, 24 { "VDO_UNKNOWN_PARTITION", "No partition exists with a given id" }, 25 { "VDO_PARTITION_EXISTS", "A partition already exists with a given id" }, 26 { "VDO_INCREMENT_TOO_SMALL", "Physical block growth of too few blocks" }, 27 { "VDO_CHECKSUM_MISMATCH", "Incorrect checksum" }, 28 { "VDO_LOCK_ERROR", "A lock is held incorrectly" }, 29 { "VDO_READ_ONLY", "The device is in read-only mode" }, 30 { "VDO_SHUTTING_DOWN", "The device is shutting down" }, 31 { "VDO_CORRUPT_JOURNAL", "Recovery journal entries corrupted" }, 32 { "VDO_TOO_MANY_SLABS", "Exceeds maximum number of slabs supported" }, 33 { "VDO_INVALID_FRAGMENT", "Compressed block fragment is invalid" }, 34 { "VDO_RETRY_AFTER_REBUILD", "Retry operation after rebuilding finishes" }, 35 { "VDO_BAD_MAPPING", "Invalid page mapping" }, 36 { "VDO_BIO_CREATION_FAILED", "Bio creation failed" }, 37 { "VDO_BAD_MAGIC", "Bad magic number" }, 38 { "VDO_BAD_NONCE", "Bad nonce" }, 39 { "VDO_JOURNAL_OVERFLOW", "Journal sequence number overflow" }, 40 { "VDO_INVALID_ADMIN_STATE", "Invalid operation for current state" }, 41 }; 42 43 /** 44 * vdo_register_status_codes() - Register the VDO status codes. 45 * Return: A success or error code. 46 */ 47 int vdo_register_status_codes(void) 48 { 49 int result; 50 51 BUILD_BUG_ON((VDO_STATUS_CODE_LAST - VDO_STATUS_CODE_BASE) != 52 ARRAY_SIZE(vdo_status_list)); 53 54 result = uds_register_error_block("VDO Status", VDO_STATUS_CODE_BASE, 55 VDO_STATUS_CODE_BLOCK_END, vdo_status_list, 56 sizeof(vdo_status_list)); 57 return (result == UDS_SUCCESS) ? VDO_SUCCESS : result; 58 } 59 60 /** 61 * vdo_status_to_errno() - Given an error code, return a value we can return to the OS. 62 * @error: The error code to convert. 63 * 64 * The input error code may be a system-generated value (such as -EIO), an errno macro used in our 65 * code (such as EIO), or a UDS or VDO status code; the result must be something the rest of the OS 66 * can consume (negative errno values such as -EIO, in the case of the kernel). 67 * 68 * Return: A system error code value. 69 */ 70 int vdo_status_to_errno(int error) 71 { 72 char error_name[VDO_MAX_ERROR_NAME_SIZE]; 73 char error_message[VDO_MAX_ERROR_MESSAGE_SIZE]; 74 75 /* 0 is success, negative a system error code */ 76 if (likely(error <= 0)) 77 return error; 78 if (error < 1024) 79 return -error; 80 81 /* VDO or UDS error */ 82 switch (error) { 83 case VDO_NO_SPACE: 84 return -ENOSPC; 85 case VDO_READ_ONLY: 86 return -EIO; 87 default: 88 vdo_log_info("%s: mapping internal status code %d (%s: %s) to EIO", 89 __func__, error, 90 uds_string_error_name(error, error_name, sizeof(error_name)), 91 uds_string_error(error, error_message, sizeof(error_message))); 92 return -EIO; 93 } 94 } 95