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Diffstat (limited to '')
| -rw-r--r-- | src/nvme/util.c | 903 |
1 files changed, 903 insertions, 0 deletions
diff --git a/src/nvme/util.c b/src/nvme/util.c new file mode 100644 index 0000000..0354afe --- /dev/null +++ b/src/nvme/util.c @@ -0,0 +1,903 @@ +// SPDX-License-Identifier: LGPL-2.1-or-later +/* + * This file is part of libnvme. + * Copyright (c) 2020 Western Digital Corporation or its affiliates. + * + * Authors: Keith Busch <keith.busch@wdc.com> + * Chaitanya Kulkarni <chaitanya.kulkarni@wdc.com> + */ + +#include <stdio.h> +#include <string.h> +#include <errno.h> + +#include <sys/stat.h> +#include <fcntl.h> +#include <sys/param.h> +#include <sys/types.h> +#include <arpa/inet.h> +#include <netdb.h> +#include <unistd.h> + +#include <ccan/endian/endian.h> + +#include "private.h" +#include "util.h" +#include "log.h" + +/* The bionic libc implementation doesn't define LINE_MAX */ +#ifndef LINE_MAX +#define LINE_MAX 2048 +#endif + +/* Source Code Control System, query version of binary with 'what' */ +const char sccsid[] = "@(#)libnvme " GIT_VERSION; + +static inline __u8 nvme_generic_status_to_errno(__u16 status) +{ + switch (status) { + case NVME_SC_INVALID_OPCODE: + case NVME_SC_INVALID_FIELD: + case NVME_SC_INVALID_NS: + case NVME_SC_SGL_INVALID_LAST: + case NVME_SC_SGL_INVALID_COUNT: + case NVME_SC_SGL_INVALID_DATA: + case NVME_SC_SGL_INVALID_METADATA: + case NVME_SC_SGL_INVALID_TYPE: + case NVME_SC_SGL_INVALID_OFFSET: + case NVME_SC_PRP_INVALID_OFFSET: + case NVME_SC_CMB_INVALID_USE: + case NVME_SC_KAT_INVALID: + return EINVAL; + case NVME_SC_CMDID_CONFLICT: + return EADDRINUSE; + case NVME_SC_DATA_XFER_ERROR: + case NVME_SC_INTERNAL: + case NVME_SC_SANITIZE_FAILED: + return EIO; + case NVME_SC_POWER_LOSS: + case NVME_SC_ABORT_REQ: + case NVME_SC_ABORT_QUEUE: + case NVME_SC_FUSED_FAIL: + case NVME_SC_FUSED_MISSING: + return EWOULDBLOCK; + case NVME_SC_CMD_SEQ_ERROR: + return EILSEQ; + case NVME_SC_SANITIZE_IN_PROGRESS: + case NVME_SC_FORMAT_IN_PROGRESS: + return EINPROGRESS; + case NVME_SC_NS_WRITE_PROTECTED: + case NVME_SC_NS_NOT_READY: + case NVME_SC_RESERVATION_CONFLICT: + case NVME_SC_OP_DENIED: + case NVME_SC_ADMIN_CMD_MEDIA_NOT_READY: + return EACCES; + case NVME_SC_LBA_RANGE: + return EREMOTEIO; + case NVME_SC_CAP_EXCEEDED: + case NVME_SC_AWU_EXCEEDED: + return ENOSPC; + } + return EIO; +} + +static inline __u8 nvme_cmd_specific_status_to_errno(__u16 status) +{ + switch (status) { + case NVME_SC_CQ_INVALID: + case NVME_SC_QID_INVALID: + case NVME_SC_QUEUE_SIZE: + case NVME_SC_FIRMWARE_SLOT: + case NVME_SC_FIRMWARE_IMAGE: + case NVME_SC_INVALID_VECTOR: + case NVME_SC_INVALID_LOG_PAGE: + case NVME_SC_INVALID_FORMAT: + case NVME_SC_INVALID_QUEUE: + case NVME_SC_NS_INSUFFICIENT_CAP: + case NVME_SC_NS_ID_UNAVAILABLE: + case NVME_SC_CTRL_LIST_INVALID: + case NVME_SC_BAD_ATTRIBUTES: + case NVME_SC_INVALID_PI: + case NVME_SC_INVALID_CTRL_ID: + case NVME_SC_INVALID_SEC_CTRL_STATE: + case NVME_SC_INVALID_CTRL_RESOURCES: + case NVME_SC_INVALID_RESOURCE_ID: + case NVME_SC_ANA_GROUP_ID_INVALID: + case NVME_SC_INSUFFICIENT_CAP: + case NVME_SC_INVALID_IOCS: + case NVME_SC_ID_UNAVAILABLE: + return EINVAL; + case NVME_SC_ABORT_LIMIT: + case NVME_SC_ASYNC_LIMIT: + case NVME_SC_NS_ATTACHMENT_LIMIT_EXCEEDED: + return EDQUOT; + case NVME_SC_FW_NEEDS_CONV_RESET: + case NVME_SC_FW_NEEDS_SUBSYS_RESET: + case NVME_SC_FW_NEEDS_MAX_TIME: + case NVME_SC_FW_NEEDS_RESET: + return ERESTART; + case NVME_SC_FEATURE_NOT_SAVEABLE: + case NVME_SC_FEATURE_NOT_CHANGEABLE: + case NVME_SC_FEATURE_NOT_PER_NS: + case NVME_SC_FW_ACTIVATE_PROHIBITED: + case NVME_SC_NS_IS_PRIVATE: + case NVME_SC_BP_WRITE_PROHIBITED: + case NVME_SC_READ_ONLY: + case NVME_SC_PMR_SAN_PROHIBITED: + return EPERM; + case NVME_SC_OVERLAPPING_RANGE: + case NVME_SC_NS_NOT_ATTACHED: + return ENOSPC; + case NVME_SC_NS_ALREADY_ATTACHED: + return EALREADY; + case NVME_SC_THIN_PROV_NOT_SUPP: + case NVME_SC_PROHIBIT_CMD_EXEC_NOT_SUPPORTED: + return EOPNOTSUPP; + case NVME_SC_ABORT_MISSING: + return EWOULDBLOCK; + case NVME_SC_SELF_TEST_IN_PROGRESS: + return EINPROGRESS; + } + + return EIO; +} + +static inline __u8 nvme_fabrics_status_to_errno(__u16 status) +{ + switch (status) { + case NVME_SC_CONNECT_FORMAT: + case NVME_SC_CONNECT_INVALID_PARAM: + case NVME_SC_DISCONNECT_INVALID_QTYPE: + return EINVAL; + case NVME_SC_CONNECT_CTRL_BUSY: + return EBUSY; + case NVME_SC_CONNECT_RESTART_DISC: + return ERESTART; + case NVME_SC_CONNECT_INVALID_HOST: + return ECONNREFUSED; + case NVME_SC_DISCOVERY_RESTART: + return EAGAIN; + case NVME_SC_AUTH_REQUIRED: + return EPERM; + } + + return EIO; +} + +__u8 nvme_status_to_errno(int status, bool fabrics) +{ + __u16 sc; + + if (!status) + return 0; + if (status < 0) + return errno; + + sc = nvme_status_code(status); + switch (nvme_status_code_type(status)) { + case NVME_SCT_GENERIC: + return nvme_generic_status_to_errno(sc); + case NVME_SCT_CMD_SPECIFIC: + if (fabrics) + return nvme_fabrics_status_to_errno(sc); + return nvme_cmd_specific_status_to_errno(sc); + default: + return EIO; + } +} + +static const char * const generic_status[] = { + [NVME_SC_SUCCESS] = "Successful Completion: The command completed without error", + [NVME_SC_INVALID_OPCODE] = "Invalid Command Opcode: A reserved coded value or an unsupported value in the command opcode field", + [NVME_SC_INVALID_FIELD] = "Invalid Field in Command: A reserved coded value or an unsupported value in a defined field", + [NVME_SC_CMDID_CONFLICT] = "Command ID Conflict: The command identifier is already in use", + [NVME_SC_DATA_XFER_ERROR] = "Data Transfer Error: Transferring the data or metadata associated with a command experienced an error", + [NVME_SC_POWER_LOSS] = "Commands Aborted due to Power Loss Notification: Indicates that the command was aborted due to a power loss notification", + [NVME_SC_INTERNAL] = "Internal Error: The command was not completed successfully due to an internal error", + [NVME_SC_ABORT_REQ] = "Command Abort Requested: The command was aborted due to an Abort command", + [NVME_SC_ABORT_QUEUE] = "Command Aborted due to SQ Deletion: The command was aborted due to a Delete I/O Submission Queue", + [NVME_SC_FUSED_FAIL] = "Command Aborted due to Failed Fused Command: The command was aborted due to the other command in a fused operation failing", + [NVME_SC_FUSED_MISSING] = "Command Aborted due to Missing Fused Command: The fused command was aborted due to the adjacent submission queue entry not containing a fused command", + [NVME_SC_INVALID_NS] = "Invalid Namespace or Format: The namespace or the format of that namespace is invalid", + [NVME_SC_CMD_SEQ_ERROR] = "Command Sequence Error: The command was aborted due to a protocol violation in a multi- command sequence", + [NVME_SC_SGL_INVALID_LAST] = "Invalid SGL Segment Descriptor: The command includes an invalid SGL Last Segment or SGL Segment descriptor", + [NVME_SC_SGL_INVALID_COUNT] = "Invalid Number of SGL Descriptors: There is an SGL Last Segment descriptor or an SGL Segment descriptor in a location other than the last descriptor of a segment based on the length indicated", + [NVME_SC_SGL_INVALID_DATA] = "Data SGL Length Invalid: The length of a Data SGL is too short or too long and the controller does not support SGL transfers longer than the amount of data to be transferred", + [NVME_SC_SGL_INVALID_METADATA] = "Metadata SGL Length Invalid: The length of a Metadata SGL is too short or too long and the controller does not support SGL transfers longer than the amount of data to be transferred", + [NVME_SC_SGL_INVALID_TYPE] = "SGL Descriptor Type Invalid: The type of an SGL Descriptor is a type that is not supported by the controller", + [NVME_SC_CMB_INVALID_USE] = "Invalid Use of Controller Memory Buffer: The attempted use of the Controller Memory Buffer is not supported by the controller", + [NVME_SC_PRP_INVALID_OFFSET] = "PRP Offset Invalid: The Offset field for a PRP entry is invalid", + [NVME_SC_AWU_EXCEEDED] = "Atomic Write Unit Exceeded: The length specified exceeds the atomic write unit size", + [NVME_SC_OP_DENIED] = "Operation Denied: The command was denied due to lack of access rights", + [NVME_SC_SGL_INVALID_OFFSET] = "SGL Offset Invalid: The offset specified in a descriptor is invalid", + [NVME_SC_HOSTID_FORMAT] = "Host Identifier Inconsistent Format: The NVM subsystem detected the simultaneous use of 64- bit and 128-bit Host Identifier values on different controllers", + [NVME_SC_KAT_EXPIRED] = "Keep Alive Timer Expired: The Keep Alive Timer expired", + [NVME_SC_KAT_INVALID] = "Keep Alive Timeout Invalid: The Keep Alive Timeout value specified is invalid", + [NVME_SC_CMD_ABORTED_PREMEPT] = "Command Aborted due to Preempt and Abort: The command was aborted due to a Reservation Acquire command", + [NVME_SC_SANITIZE_FAILED] = "Sanitize Failed: The most recent sanitize operation failed and no recovery action has been successfully completed", + [NVME_SC_SANITIZE_IN_PROGRESS] = "Sanitize In Progress: The requested function is prohibited while a sanitize operation is in progress", + [NVME_SC_SGL_INVALID_GRANULARITY] = "SGL Data Block Granularity Invalid: The Address alignment or Length granularity for an SGL Data Block descriptor is invalid", + [NVME_SC_CMD_IN_CMBQ_NOT_SUPP] = "Command Not Supported for Queue in CMB: The controller does not support Submission Queue in the Controller Memory Buffer or Completion Queue in the Controller Memory Buffer", + [NVME_SC_NS_WRITE_PROTECTED] = "Namespace is Write Protected: The command is prohibited while the namespace is write protected", + [NVME_SC_CMD_INTERRUPTED] = "Command Interrupted: Command processing was interrupted and the controller is unable to successfully complete the command", + [NVME_SC_TRAN_TPORT_ERROR] = "Transient Transport Error: A transient transport error was detected", + [NVME_SC_PROHIBITED_BY_CMD_AND_FEAT] = "Command Prohibited by Command and Feature Lockdown: The command was aborted due to command execution being prohibited by the Command and Feature Lockdown", + [NVME_SC_ADMIN_CMD_MEDIA_NOT_READY] = "Admin Command Media Not Ready: The Admin command requires access to media and the media is not ready", + [NVME_SC_LBA_RANGE] = "LBA Out of Range: The command references an LBA that exceeds the size of the namespace", + [NVME_SC_CAP_EXCEEDED] = "Capacity Exceeded: Execution of the command has caused the capacity of the namespace to be exceeded", + [NVME_SC_NS_NOT_READY] = "Namespace Not Ready: The namespace is not ready to be accessed", + [NVME_SC_RESERVATION_CONFLICT] = "Reservation Conflict: The command was aborted due to a conflict with a reservation held on the accessed namespace", + [NVME_SC_FORMAT_IN_PROGRESS] = "Format In Progress: A Format NVM command is in progress on the namespace", +}; + +static const char * const cmd_spec_status[] = { + [NVME_SC_CQ_INVALID] = "Completion Queue Invalid: The Completion Queue identifier specified in the command does not exist", + [NVME_SC_QID_INVALID] = "Invalid Queue Identifier: The creation of the I/O Completion Queue failed due to an invalid queue identifier specified as part of the command", + [NVME_SC_QUEUE_SIZE] = "Invalid Queue Size: The host attempted to create an I/O Completion Queue with an invalid number of entries", + [NVME_SC_ABORT_LIMIT] = "Abort Command Limit Exceeded: The number of concurrently outstanding Abort commands has exceeded the limit indicated in the Identify Controller data structure", + [NVME_SC_ABORT_MISSING] = "Abort Command Is Missing: The abort command is missing", + [NVME_SC_ASYNC_LIMIT] = "Asynchronous Event Request Limit Exceeded: The number of concurrently outstanding Asynchronous Event Request commands has been exceeded", + [NVME_SC_FIRMWARE_SLOT] = "Invalid Firmware Slot: The firmware slot indicated is invalid or read only", + [NVME_SC_FIRMWARE_IMAGE] = "Invalid Firmware Image: The firmware image specified for activation is invalid and not loaded by the controller", + [NVME_SC_INVALID_VECTOR] = "Invalid Interrupt Vector: The creation of the I/O Completion Queue failed due to an invalid interrupt vector specified as part of the command", + [NVME_SC_INVALID_LOG_PAGE] = "Invalid Log Page: The log page indicated is invalid", + [NVME_SC_INVALID_FORMAT] = "Invalid Format: The LBA Format specified is not supported", + [NVME_SC_FW_NEEDS_CONV_RESET] = "Firmware Activation Requires Conventional Reset: The firmware commit was successful, however, activation of the firmware image requires a conventional reset", + [NVME_SC_INVALID_QUEUE] = "Invalid Queue Deletion: Invalid I/O Completion Queue specified to delete", + [NVME_SC_FEATURE_NOT_SAVEABLE] = "Feature Identifier Not Saveable: The Feature Identifier specified does not support a saveable value", + [NVME_SC_FEATURE_NOT_CHANGEABLE] = "Feature Not Changeable: The Feature Identifier is not able to be changed", + [NVME_SC_FEATURE_NOT_PER_NS] = "Feature Not Namespace Specific: The Feature Identifier specified is not namespace specific", + [NVME_SC_FW_NEEDS_SUBSYS_RESET] = "Firmware Activation Requires NVM Subsystem Reset: The firmware commit was successful, however, activation of the firmware image requires an NVM Subsystem", + [NVME_SC_FW_NEEDS_RESET] = "Firmware Activation Requires Controller Level Reset: The firmware commit was successful; however, the image specified does not support being activated without a reset", + [NVME_SC_FW_NEEDS_MAX_TIME] = "Firmware Activation Requires Maximum Time Violation: The image specified if activated immediately would exceed the Maximum Time for Firmware Activation (MTFA) value reported in Identify Controller", + [NVME_SC_FW_ACTIVATE_PROHIBITED] = "Firmware Activation Prohibited: The image specified is being prohibited from activation by the controller for vendor specific reasons", + [NVME_SC_OVERLAPPING_RANGE] = "Overlapping Range: The downloaded firmware image has overlapping ranges", + [NVME_SC_NS_INSUFFICIENT_CAP] = "Namespace Insufficient Capacity: Creating the namespace requires more free space than is currently available", + [NVME_SC_NS_ID_UNAVAILABLE] = "Namespace Identifier Unavailable: The number of namespaces supported has been exceeded", + [NVME_SC_NS_ALREADY_ATTACHED] = "Namespace Already Attached: The controller is already attached to the namespace specified", + [NVME_SC_NS_IS_PRIVATE] = "Namespace Is Private: The namespace is private and is already attached to one controller", + [NVME_SC_NS_NOT_ATTACHED] = "Namespace Not Attached: The request to detach the controller could not be completed because the controller is not attached to the namespace", + [NVME_SC_THIN_PROV_NOT_SUPP] = "Thin Provisioning Not Supported: Thin provisioning is not supported by the controller", + [NVME_SC_CTRL_LIST_INVALID] = "Controller List Invalid: The controller list provided contains invalid controller ids", + [NVME_SC_SELF_TEST_IN_PROGRESS] = "Device Self-test In Progress: The controller or NVM subsystem already has a device self-test operation in process", + [NVME_SC_BP_WRITE_PROHIBITED] = "Boot Partition Write Prohibited: The command tried to modify a locked Boot Partition", + [NVME_SC_INVALID_CTRL_ID] = "Invalid Controller Identifier: An invalid controller id was specified", + [NVME_SC_INVALID_SEC_CTRL_STATE] = "Invalid Secondary Controller State: The requested secondary controller action is invalid based on the secondary and primary controllers current states", + [NVME_SC_INVALID_CTRL_RESOURCES] = "Invalid Number of Controller Resources: The specified number of Flexible Resources is invalid", + [NVME_SC_INVALID_RESOURCE_ID] = "Invalid Resource Identifier: At least one of the specified resource identifiers was invalid", + [NVME_SC_PMR_SAN_PROHIBITED] = "Sanitize Prohibited While Persistent Memory Region is Enabled", + [NVME_SC_ANA_GROUP_ID_INVALID] = "ANA Group Identifier Invalid: The specified ANA Group Identifier (ANAGRPID) is not supported in the submitted command", + [NVME_SC_ANA_ATTACH_FAILED] = "ANA Attach Failed: The controller is not attached to the namespace as a result of an ANA condition", + [NVME_SC_INSUFFICIENT_CAP] = "Insufficient Capacity: Requested operation requires more free space than is currently available", + [NVME_SC_NS_ATTACHMENT_LIMIT_EXCEEDED] = "Namespace Attachment Limit Exceeded: Attaching the ns to a controller causes max number of ns attachments allowed to be exceeded", + [NVME_SC_PROHIBIT_CMD_EXEC_NOT_SUPPORTED] = "Prohibition of Command Execution Not Supported", + [NVME_SC_IOCS_NOT_SUPPORTED] = "The I/O command set is not supported", + [NVME_SC_IOCS_NOT_ENABLED] = "The I/O command set is not enabled", + [NVME_SC_IOCS_COMBINATION_REJECTED] = "The I/O command set combination is rejected", + [NVME_SC_INVALID_IOCS] = "The I/O command set is invalid", + [NVME_SC_ID_UNAVAILABLE] = "Identifier Unavailable: The number of Endurance Groups or NVM Sets supported has been exceeded", + [NVME_SC_INVALID_DISCOVERY_INFO] = "Discovery Info Entry not applicable to selected entity", + [NVME_SC_ZONING_DATA_STRUCT_LOCKED] = "The requested Zoning data structure is locked on the CDC", + [NVME_SC_ZONING_DATA_STRUCT_NOTFND] = "The requested Zoning data structure does not exist on the CDC", + [NVME_SC_INSUFFICIENT_DISC_RES] = "Discovery Info entries exceed Discovery Controller's capacity", + [NVME_SC_REQSTD_FUNCTION_DISABLED] = "Fabric Zoning is not enabled on the CDC", + [NVME_SC_ZONEGRP_ORIGINATOR_INVLD] = "The NQN contained in the ZoneGroup Originator field does not match the Host NQN used by the DDC to connect to the CDC", +}; + +static const char * const nvm_status[] = { + [NVME_SC_BAD_ATTRIBUTES] = "Conflicting Attributes: The attributes specified in the command are conflicting", + [NVME_SC_INVALID_PI] = "Invalid Protection Information: The command's Protection Information Field settings are invalid for the namespace's Protection Information format", + [NVME_SC_READ_ONLY] = "Attempted Write to Read Only Range: The LBA range specified contains read-only blocks", + [NVME_SC_CMD_SIZE_LIMIT_EXCEEDED] = "Command Size Limit Exceeded", + [NVME_SC_ZNS_INVALID_OP_REQUEST] = "Invalid Zone Operation Request: The operation requested is invalid", + [NVME_SC_ZNS_ZRWA_RESOURCES_UNAVAILABLE] = "ZRWA Resources Unavailable: No ZRWAs are available", + [NVME_SC_ZNS_BOUNDARY_ERROR] = "Zoned Boundary Error: Invalid Zone Boundary crossing", + [NVME_SC_ZNS_FULL] = "Zone Is Full: The accessed zone is in ZSF:Full state", + [NVME_SC_ZNS_READ_ONLY] = "Zone Is Read Only: The accessed zone is in ZSRO:Read Only state", + [NVME_SC_ZNS_OFFLINE] = "Zone Is Offline: The access zone is in ZSO:Offline state", + [NVME_SC_ZNS_INVALID_WRITE] = "Zone Invalid Write: The write to zone was not at the write pointer offset", + [NVME_SC_ZNS_TOO_MANY_ACTIVE] = "Too Many Active Zones: The controller does not allow additional active zones", + [NVME_SC_ZNS_TOO_MANY_OPENS] = "Too Many Open Zones: The controller does not allow additional open zones", + [NVME_SC_ZNS_INVAL_TRANSITION] = "Invalid Zone State Transition: The request is not a valid zone state transition", +}; + +static const char * const nvmf_status[] = { + [NVME_SC_CONNECT_FORMAT] = "Incompatible Format: The NVM subsystem does not support the record format specified by the host", + [NVME_SC_CONNECT_CTRL_BUSY] = "Controller Busy: The controller is already associated with a host", + [NVME_SC_CONNECT_INVALID_PARAM] = "Connect Invalid Parameters: One or more of the command parameters", + [NVME_SC_CONNECT_RESTART_DISC] = "Connect Restart Discovery: The NVM subsystem requested is not available", + [NVME_SC_CONNECT_INVALID_HOST] = "Connect Invalid Host: The host is not allowed to establish an association to either any controller in the NVM subsystem or the specified controller", + [NVME_SC_DISCONNECT_INVALID_QTYPE] = "Invalid Queue Type: The command was sent on the wrong queue type", + [NVME_SC_DISCOVERY_RESTART] = "Discover Restart: The snapshot of the records is now invalid or out of date", + [NVME_SC_AUTH_REQUIRED] = "Authentication Required: NVMe in-band authentication is required and the queue has not yet been authenticated", +}; + +static const char * const media_status[] = { + [NVME_SC_WRITE_FAULT] = "Write Fault: The write data could not be committed to the media", + [NVME_SC_READ_ERROR] = "Unrecovered Read Error: The read data could not be recovered from the media", + [NVME_SC_GUARD_CHECK] = "End-to-end Guard Check Error: The command was aborted due to an end-to-end guard check failure", + [NVME_SC_APPTAG_CHECK] = "End-to-end Application Tag Check Error: The command was aborted due to an end-to-end application tag check failure", + [NVME_SC_REFTAG_CHECK] = "End-to-end Reference Tag Check Error: The command was aborted due to an end-to-end reference tag check failure", + [NVME_SC_COMPARE_FAILED] = "Compare Failure: The command failed due to a miscompare during a Compare command", + [NVME_SC_ACCESS_DENIED] = "Access Denied: Access to the namespace and/or LBA range is denied due to lack of access rights", + [NVME_SC_UNWRITTEN_BLOCK] = "Deallocated or Unwritten Logical Block: The command failed due to an attempt to read from or verify an LBA range containing a deallocated or unwritten logical block", + [NVME_SC_STORAGE_TAG_CHECK] = "End-to-End Storage Tag Check Error: The command was aborted due to an end-to-end storage tag check failure", +}; + +static const char * const path_status[] = { + [NVME_SC_ANA_INTERNAL_PATH_ERROR] = "Internal Path Error: An internal error specific to the controller processing the command prevented completion", + [NVME_SC_ANA_PERSISTENT_LOSS] = "Asymmetric Access Persistent Loss: The controller is in a persistent loss state with the requested namespace", + [NVME_SC_ANA_INACCESSIBLE] = "Asymmetric Access Inaccessible: The controller is in an inaccessible state with the requested namespace", + [NVME_SC_ANA_TRANSITION] = "Asymmetric Access Transition: The controller is currently transitioning states with the requested namespace", + [NVME_SC_CTRL_PATH_ERROR] = "Controller Pathing Error: A pathing error was detected by the controller", + [NVME_SC_HOST_PATH_ERROR] = "Host Pathing Error: A pathing error was detected by the host", + [NVME_SC_CMD_ABORTED_BY_HOST] = "Command Aborted By Host: The command was aborted as a result of host action", +}; + +#define ARRAY_SIZE(arr) (sizeof(arr) / sizeof((arr)[0])) +#define ARGSTR(s, i) arg_str(s, ARRAY_SIZE(s), i) + +static const char *arg_str(const char * const *strings, + size_t array_size, size_t idx) +{ + if (idx < array_size && strings[idx]) + return strings[idx]; + return "unrecognized"; +} + +const char *nvme_status_to_string(int status, bool fabrics) +{ + const char *s = "Unknown status"; + __u16 sc, sct; + + if (status < 0) + return strerror(errno); + + sc = nvme_status_code(status); + sct = nvme_status_code_type(status); + + switch (sct) { + case NVME_SCT_GENERIC: + s = ARGSTR(generic_status, sc); + break; + case NVME_SCT_CMD_SPECIFIC: + if (sc < ARRAY_SIZE(cmd_spec_status)) + s = ARGSTR(cmd_spec_status, sc); + else if (fabrics) + s = ARGSTR(nvmf_status, sc); + else + s = ARGSTR(nvm_status, sc); + break; + case NVME_SCT_MEDIA: + s = ARGSTR(media_status, sc); + break; + case NVME_SCT_PATH: + s = ARGSTR(path_status, sc); + break; + case NVME_SCT_VS: + s = "Vendor Specific Status"; + break; + default: + break; + } + + return s; +} + +void nvme_init_copy_range(struct nvme_copy_range *copy, __u16 *nlbs, + __u64 *slbas, __u32 *eilbrts, __u32 *elbatms, + __u32 *elbats, __u16 nr) +{ + int i; + + for (i = 0; i < nr; i++) { + copy[i].nlb = cpu_to_le16(nlbs[i]); + copy[i].slba = cpu_to_le64(slbas[i]); + copy[i].eilbrt = cpu_to_le32(eilbrts[i]); + copy[i].elbatm = cpu_to_le16(elbatms[i]); + copy[i].elbat = cpu_to_le16(elbats[i]); + } +} + +void nvme_init_copy_range_f1(struct nvme_copy_range_f1 *copy, __u16 *nlbs, + __u64 *slbas, __u64 *eilbrts, __u32 *elbatms, + __u32 *elbats, __u16 nr) +{ + int i; + + for (i = 0; i < nr; i++) { + copy[i].nlb = cpu_to_le16(nlbs[i]); + copy[i].slba = cpu_to_le64(slbas[i]); + copy[i].elbt[2] = cpu_to_le64(eilbrts[i]); + copy[i].elbatm = cpu_to_le16(elbatms[i]); + copy[i].elbat = cpu_to_le16(elbats[i]); + } +} + +void nvme_init_dsm_range(struct nvme_dsm_range *dsm, __u32 *ctx_attrs, + __u32 *llbas, __u64 *slbas, __u16 nr_ranges) +{ + int i; + + for (i = 0; i < nr_ranges; i++) { + dsm[i].cattr = cpu_to_le32(ctx_attrs[i]); + dsm[i].nlb = cpu_to_le32(llbas[i]); + dsm[i].slba = cpu_to_le64(slbas[i]); + } +} + +void nvme_init_ctrl_list(struct nvme_ctrl_list *cntlist, __u16 num_ctrls, + __u16 *ctrlist) +{ + int i; + + cntlist->num = cpu_to_le16(num_ctrls); + for (i = 0; i < num_ctrls; i++) + cntlist->identifier[i] = cpu_to_le16(ctrlist[i]); +} + +int nvme_get_feature_length(int fid, __u32 cdw11, __u32 *len) +{ + switch (fid) { + case NVME_FEAT_FID_LBA_RANGE: + *len = sizeof(struct nvme_lba_range_type); + break; + case NVME_FEAT_FID_AUTO_PST: + *len = sizeof(struct nvme_feat_auto_pst); + break; + case NVME_FEAT_FID_PLM_CONFIG: + *len = sizeof(struct nvme_plm_config); + break; + case NVME_FEAT_FID_TIMESTAMP: + *len = sizeof(struct nvme_timestamp); + break; + case NVME_FEAT_FID_HOST_BEHAVIOR: + *len = sizeof(struct nvme_feat_host_behavior); + break; + case NVME_FEAT_FID_HOST_ID: + *len = (cdw11 & 0x1) ? 16 : 8; + break; + case NVME_FEAT_FID_HOST_MEM_BUF: + *len = sizeof(struct nvme_host_mem_buf_attrs); + break; + case NVME_FEAT_FID_ARBITRATION: + case NVME_FEAT_FID_POWER_MGMT: + case NVME_FEAT_FID_TEMP_THRESH: + case NVME_FEAT_FID_ERR_RECOVERY: + case NVME_FEAT_FID_VOLATILE_WC: + case NVME_FEAT_FID_NUM_QUEUES: + case NVME_FEAT_FID_IRQ_COALESCE: + case NVME_FEAT_FID_IRQ_CONFIG: + case NVME_FEAT_FID_WRITE_ATOMIC: + case NVME_FEAT_FID_ASYNC_EVENT: + case NVME_FEAT_FID_KATO: + case NVME_FEAT_FID_HCTM: + case NVME_FEAT_FID_NOPSC: + case NVME_FEAT_FID_RRL: + case NVME_FEAT_FID_PLM_WINDOW: + case NVME_FEAT_FID_LBA_STS_INTERVAL: + case NVME_FEAT_FID_SANITIZE: + case NVME_FEAT_FID_ENDURANCE_EVT_CFG: + case NVME_FEAT_FID_SW_PROGRESS: + case NVME_FEAT_FID_RESV_MASK: + case NVME_FEAT_FID_RESV_PERSIST: + case NVME_FEAT_FID_WRITE_PROTECT: + *len = 0; + break; + case NVME_FEAT_FID_ENH_CTRL_METADATA: + case NVME_FEAT_FID_CTRL_METADATA: + case NVME_FEAT_FID_NS_METADATA: + *len = sizeof(struct nvme_host_metadata); + break; + default: + errno = EINVAL; + return -1; + } + return 0; +} + +int nvme_get_feature_length2(int fid, __u32 cdw11, enum nvme_data_tfr dir, + __u32 *len) +{ + switch (fid) { + case NVME_FEAT_FID_HOST_MEM_BUF: + if (dir == NVME_DATA_TFR_HOST_TO_CTRL) { + *len = 0; + break; + } + fallthrough; + default: + return nvme_get_feature_length(fid, cdw11, len); + } + return 0; +} + +int nvme_get_directive_receive_length(enum nvme_directive_dtype dtype, + enum nvme_directive_receive_doper doper, __u32 *len) +{ + switch (dtype) { + case NVME_DIRECTIVE_DTYPE_IDENTIFY: + switch (doper) { + case NVME_DIRECTIVE_RECEIVE_IDENTIFY_DOPER_PARAM: + *len = sizeof(struct nvme_id_directives); + return 0; + default: + errno = EINVAL; + return -1; + } + case NVME_DIRECTIVE_DTYPE_STREAMS: + switch (doper) { + case NVME_DIRECTIVE_RECEIVE_STREAMS_DOPER_PARAM: + *len = sizeof(struct nvme_streams_directive_params); + return 0; + case NVME_DIRECTIVE_RECEIVE_STREAMS_DOPER_STATUS: + *len = (128 * 1024) * sizeof(__le16); + return 0; + case NVME_DIRECTIVE_RECEIVE_STREAMS_DOPER_RESOURCE: + *len = 0; + return 0; + default: + errno = EINVAL; + return -1; + } + default: + errno = EINVAL; + return -1; + } +} + +static const char * const libnvme_status[] = { + [ENVME_CONNECT_RESOLVE] = "failed to resolve host", + [ENVME_CONNECT_ADDRFAM] = "unrecognized address family", + [ENVME_CONNECT_TRADDR] = "failed to get transport address", + [ENVME_CONNECT_TARG] = "no transport specified", + [ENVME_CONNECT_AARG] = "no transport address specified", + [ENVME_CONNECT_OPEN] = "failed to open nvme-fabrics device", + [ENVME_CONNECT_WRITE] = "failed to write to nvme-fabrics device", + [ENVME_CONNECT_READ] = "failed to read from nvme-fabrics device", + [ENVME_CONNECT_PARSE] = "failed to parse ctrl info", + [ENVME_CONNECT_INVAL_TR] = "invalid transport type", + [ENVME_CONNECT_LOOKUP_SUBSYS_NAME] = "failed to lookup subsystem name", + [ENVME_CONNECT_LOOKUP_SUBSYS] = "failed to lookup subsystem", + [ENVME_CONNECT_ALREADY] = "already connected", + [ENVME_CONNECT_INVAL] = "invalid arguments/configuration", + [ENVME_CONNECT_ADDRINUSE] = "hostnqn already in use", + [ENVME_CONNECT_NODEV] = "invalid interface", + [ENVME_CONNECT_OPNOTSUPP] ="not supported", + [ENVME_CONNECT_CONNREFUSED] = "connection refused", +}; + +const char *nvme_errno_to_string(int status) +{ + const char *s = ARGSTR(libnvme_status, status); + + return s; +} + +#ifdef HAVE_LIBNSS +char *hostname2traddr(struct nvme_root *r, const char *traddr) +{ + struct addrinfo *host_info, hints = {.ai_family = AF_UNSPEC}; + char addrstr[NVMF_TRADDR_SIZE]; + const char *p; + char *ret_traddr = NULL; + int ret; + + ret = getaddrinfo(traddr, NULL, &hints, &host_info); + if (ret) { + nvme_msg(r, LOG_ERR, "failed to resolve host %s info\n", + traddr); + return NULL; + } + + switch (host_info->ai_family) { + case AF_INET: + p = inet_ntop(host_info->ai_family, + &(((struct sockaddr_in *)host_info->ai_addr)->sin_addr), + addrstr, NVMF_TRADDR_SIZE); + break; + case AF_INET6: + p = inet_ntop(host_info->ai_family, + &(((struct sockaddr_in6 *)host_info->ai_addr)->sin6_addr), + addrstr, NVMF_TRADDR_SIZE); + break; + default: + nvme_msg(r, LOG_ERR, "unrecognized address family (%d) %s\n", + host_info->ai_family, traddr); + goto free_addrinfo; + } + + if (!p) { + nvme_msg(r, LOG_ERR, "failed to get traddr for %s\n", + traddr); + goto free_addrinfo; + } + ret_traddr = strdup(addrstr); + +free_addrinfo: + freeaddrinfo(host_info); + return ret_traddr; +} + +#else /* !HAVE_LIBNSS */ + +char *hostname2traddr(struct nvme_root *r, const char *traddr) +{ + nvme_msg(NULL, LOG_ERR, "No support for hostname IP address resolution; " \ + "recompile with libnss support.\n"); + + errno = -ENOTSUP; + return NULL; +} +#endif /* HAVE_LIBNSS */ + +char *startswith(const char *s, const char *prefix) +{ + size_t l; + + l = strlen(prefix); + if (!strncmp(s, prefix, l)) + return (char *)s + l; + + return NULL; +} + +char *kv_strip(char *kv) +{ + char *s; + + kv[strcspn(kv, "\n\r")] = '\0'; + + /* Remove leading newline and spaces */ + kv += strspn(kv, " \t\n\r"); + + /* Skip comments and empty lines */ + if (*kv == '#' || *kv == '\0') { + *kv = '\0'; + return kv; + } + + /* Remove trailing newline chars */ + kv[strcspn(kv, "\n\r")] = '\0'; + + /* Delete trailing comments (including spaces/tabs that precede the #)*/ + s = &kv[strcspn(kv, "#")]; + *s-- = '\0'; + while ((s >= kv) && ((*s == ' ') || (*s == '\t'))) { + *s-- = '\0'; + } + + return kv; +} + +char *kv_keymatch(const char *kv, const char *key) +{ + char *value; + + value = startswith(kv, key); + if (value) { + /* Make sure key is a whole word. I.e. it should be + * followed by spaces, tabs, or a equal sign. Skip + * leading spaces, tabs, and equal sign (=) */ + switch (*value) { + case ' ': + case '\t': + case '=': + value += strspn(value, " \t="); + return value; + default: ; + } + } + + return NULL; +} + +/** + * read_file - read contents of file into @buffer. + * @fname: File name + * @buffer: Where to save file's contents + * @bufsz: Size of @buffer. On success, @bufsz gets decremented by the + * number of characters that were writtent to @buffer. + * + * Return: The number of characters read. If the file cannot be opened or + * nothing is read from the file, then this function returns 0. + */ +static size_t read_file(const char * fname, char *buffer, size_t *bufsz) +{ + char *p; + FILE *file; + size_t len; + + file = fopen(fname, "re"); + if (!file) + return 0; + + p = fgets(buffer, *bufsz, file); + fclose(file); + + if (!p) + return 0; + + /* Strip unwanted trailing chars */ + len = strcspn(buffer, " \t\n\r"); + *bufsz -= len; + + return len; +} + +static size_t copy_value(char *buf, size_t buflen, const char *value) +{ + size_t val_len; + + memset(buf, 0, buflen); + + /* Remove leading " */ + if (value[0] == '"') + value++; + + /* Remove trailing " */ + val_len = strcspn(value, "\""); + + memcpy(buf, value, MIN(val_len, buflen-1)); + + return val_len; +} + +size_t get_entity_name(char *buffer, size_t bufsz) +{ + size_t len = !gethostname(buffer, bufsz) ? strlen(buffer) : 0; + + /* Fill the rest of buffer with zeros */ + memset(&buffer[len], '\0', bufsz-len); + + return len; +} + +size_t get_entity_version(char *buffer, size_t bufsz) +{ + FILE *file; + size_t num_bytes = 0; + + /* /proc/sys/kernel/ostype typically contains the string "Linux" */ + num_bytes += read_file("/proc/sys/kernel/ostype", + &buffer[num_bytes], &bufsz); + + /* /proc/sys/kernel/osrelease contains the Linux + * version (e.g. 5.8.0-63-generic) + */ + buffer[num_bytes++] = ' '; /* Append a space */ + num_bytes += read_file("/proc/sys/kernel/osrelease", + &buffer[num_bytes], &bufsz); + + /* /etc/os-release contains Key-Value pairs. We only care about the key + * PRETTY_NAME, which contains the Distro's version. For example: + * "SUSE Linux Enterprise Server 15 SP4", "Ubuntu 20.04.3 LTS", or + * "Fedora Linux 35 (Server Edition)" + */ + file = fopen("/etc/os-release", "re"); + if (file) { + char name[64] = {0}; + size_t name_len = 0; + char ver_id[64] = {0}; + size_t ver_id_len = 0; + char line[LINE_MAX]; + char *p; + char *s; + + /* Read key-value pairs one line at a time */ + while ((!name_len || !ver_id_len) && + (p = fgets(line, sizeof(line), file)) != NULL) { + /* Clean up string by removing leading/trailing blanks + * and new line characters. Also eliminate trailing + * comments, if any. + */ + p = kv_strip(p); + + /* Empty string? */ + if (*p == '\0') + continue; + + s = kv_keymatch(p, "NAME"); + if (s) + name_len = copy_value(name, sizeof(name), s); + + s = kv_keymatch(p, "VERSION_ID"); + if (s) + ver_id_len = copy_value(ver_id, sizeof(ver_id), s); + } + fclose(file); + + if (name_len) { + /* Append a space */ + buffer[num_bytes++] = ' '; + name_len = MIN(name_len, bufsz); + memcpy(&buffer[num_bytes], name, name_len); + bufsz -= name_len; + num_bytes += name_len; + } + + if (ver_id_len) { + /* Append a space */ + buffer[num_bytes++] = ' '; + ver_id_len = MIN(ver_id_len, bufsz); + memcpy(&buffer[num_bytes], ver_id, ver_id_len); + bufsz -= ver_id_len; + num_bytes += ver_id_len; + } + } + + /* Fill the rest of buffer with zeros */ + memset(&buffer[num_bytes], '\0', bufsz); + + return num_bytes; +} + +struct nvmf_ext_attr *nvmf_exat_ptr_next(struct nvmf_ext_attr *p) +{ + return (struct nvmf_ext_attr *) + ((uintptr_t)p + (ptrdiff_t)nvmf_exat_size(le16_to_cpu(p->exatlen))); +} + +const char *nvme_get_version(enum nvme_version type) +{ + switch(type) { + case NVME_VERSION_PROJECT: + return PROJECT_VERSION; + case NVME_VERSION_GIT: + return GIT_VERSION; + default: + return "n/a"; + } +} + +int nvme_uuid_to_string(unsigned char uuid[NVME_UUID_LEN], char *str) +{ + int n; + n = snprintf(str, NVME_UUID_LEN_STRING, + "%02x%02x%02x%02x-%02x%02x-%02x%02x-" + "%02x%02x-%02x%02x%02x%02x%02x%02x", + uuid[0], uuid[1], uuid[2], uuid[3], uuid[4], uuid[5], + uuid[6], uuid[7], uuid[8], uuid[9], uuid[10], uuid[11], + uuid[12], uuid[13], uuid[14], uuid[15]); + return n != NVME_UUID_LEN_STRING - 1 ? -EINVAL : 0; +} + +int nvme_uuid_from_string(const char *str, unsigned char uuid[NVME_UUID_LEN]) +{ + int n; + + n = sscanf(str, + "%02hhx%02hhx%02hhx%02hhx-%02hhx%02hhx-%02hhx%02hhx-" + "%02hhx%02hhx-%02hhx%02hhx%02hhx%02hhx%02hhx%02hhx", + &uuid[0], &uuid[1], &uuid[2], &uuid[3], &uuid[4], &uuid[5], + &uuid[6], &uuid[7], &uuid[8], &uuid[9], &uuid[10], &uuid[11], + &uuid[12], &uuid[13], &uuid[14], &uuid[15]); + return n != NVME_UUID_LEN ? -EINVAL : 0; + +} + +int nvme_uuid_random(unsigned char uuid[NVME_UUID_LEN]) +{ + int f; + ssize_t n; + + f = open("/dev/urandom", O_RDONLY); + if (f < 0) + return -errno; + n = read(f, uuid, NVME_UUID_LEN); + close(f); + if (n < 0) + return -errno; + else if (n != NVME_UUID_LEN) + return -EIO; + + /* + * See https://www.rfc-editor.org/rfc/rfc4122#section-4.4 + * Algorithms for Creating a UUID from Truly Random + * or Pseudo-Random Numbers + */ + uuid[6] = (uuid[6] & 0x0f) | 0x40; + uuid[8] = (uuid[8] & 0x3f) | 0x80; + + return 0; +} |