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linux/drivers/scsi/constants.c
Greg Kroah-Hartman b24413180f License cleanup: add SPDX GPL-2.0 license identifier to files with no license 
Many source files in the tree are missing licensing information, which
makes it harder for compliance tools to determine the correct license.

By default all files without license information are under the default
license of the kernel, which is GPL version 2.

Update the files which contain no license information with the 'GPL-2.0'
SPDX license identifier.  The SPDX identifier is a legally binding
shorthand, which can be used instead of the full boiler plate text.

This patch is based on work done by Thomas Gleixner and Kate Stewart and
Philippe Ombredanne.

How this work was done:

Patches were generated and checked against linux-4.14-rc6 for a subset of
the use cases:
 - file had no licensing information it it.
 - file was a */uapi/* one with no licensing information in it,
 - file was a */uapi/* one with existing licensing information,

Further patches will be generated in subsequent months to fix up cases
where non-standard license headers were used, and references to license
had to be inferred by heuristics based on keywords.

The analysis to determine which SPDX License Identifier to be applied to
a file was done in a spreadsheet of side by side results from of the
output of two independent scanners (ScanCode & Windriver) producing SPDX
tag:value files created by Philippe Ombredanne.  Philippe prepared the
base worksheet, and did an initial spot review of a few 1000 files.

The 4.13 kernel was the starting point of the analysis with 60,537 files
assessed.  Kate Stewart did a file by file comparison of the scanner
results in the spreadsheet to determine which SPDX license identifier(s)
to be applied to the file. She confirmed any determination that was not
immediately clear with lawyers working with the Linux Foundation.

Criteria used to select files for SPDX license identifier tagging was:
 - Files considered eligible had to be source code files.
 - Make and config files were included as candidates if they contained >5
   lines of source
 - File already had some variant of a license header in it (even if <5
   lines).

All documentation files were explicitly excluded.

The following heuristics were used to determine which SPDX license
identifiers to apply.

 - when both scanners couldn't find any license traces, file was
   considered to have no license information in it, and the top level
   COPYING file license applied.

   For non */uapi/* files that summary was:

   SPDX license identifier                            # files
   ---------------------------------------------------|-------
   GPL-2.0                                              11139

   and resulted in the first patch in this series.

   If that file was a */uapi/* path one, it was "GPL-2.0 WITH
   Linux-syscall-note" otherwise it was "GPL-2.0".  Results of that was:

   SPDX license identifier                            # files
   ---------------------------------------------------|-------
   GPL-2.0 WITH Linux-syscall-note                        930

   and resulted in the second patch in this series.

 - if a file had some form of licensing information in it, and was one
   of the */uapi/* ones, it was denoted with the Linux-syscall-note if
   any GPL family license was found in the file or had no licensing in
   it (per prior point).  Results summary:

   SPDX license identifier                            # files
   ---------------------------------------------------|------
   GPL-2.0 WITH Linux-syscall-note                       270
   GPL-2.0+ WITH Linux-syscall-note                      169
   ((GPL-2.0 WITH Linux-syscall-note) OR BSD-2-Clause)    21
   ((GPL-2.0 WITH Linux-syscall-note) OR BSD-3-Clause)    17
   LGPL-2.1+ WITH Linux-syscall-note                      15
   GPL-1.0+ WITH Linux-syscall-note                       14
   ((GPL-2.0+ WITH Linux-syscall-note) OR BSD-3-Clause)    5
   LGPL-2.0+ WITH Linux-syscall-note                       4
   LGPL-2.1 WITH Linux-syscall-note                        3
   ((GPL-2.0 WITH Linux-syscall-note) OR MIT)              3
   ((GPL-2.0 WITH Linux-syscall-note) AND MIT)             1

   and that resulted in the third patch in this series.

 - when the two scanners agreed on the detected license(s), that became
   the concluded license(s).

 - when there was disagreement between the two scanners (one detected a
   license but the other didn't, or they both detected different
   licenses) a manual inspection of the file occurred.

 - In most cases a manual inspection of the information in the file
   resulted in a clear resolution of the license that should apply (and
   which scanner probably needed to revisit its heuristics).

 - When it was not immediately clear, the license identifier was
   confirmed with lawyers working with the Linux Foundation.

 - If there was any question as to the appropriate license identifier,
   the file was flagged for further research and to be revisited later
   in time.

In total, over 70 hours of logged manual review was done on the
spreadsheet to determine the SPDX license identifiers to apply to the
source files by Kate, Philippe, Thomas and, in some cases, confirmation
by lawyers working with the Linux Foundation.

Kate also obtained a third independent scan of the 4.13 code base from
FOSSology, and compared selected files where the other two scanners
disagreed against that SPDX file, to see if there was new insights.  The
Windriver scanner is based on an older version of FOSSology in part, so
they are related.

Thomas did random spot checks in about 500 files from the spreadsheets
for the uapi headers and agreed with SPDX license identifier in the
files he inspected. For the non-uapi files Thomas did random spot checks
in about 15000 files.

In initial set of patches against 4.14-rc6, 3 files were found to have
copy/paste license identifier errors, and have been fixed to reflect the
correct identifier.

Additionally Philippe spent 10 hours this week doing a detailed manual
inspection and review of the 12,461 patched files from the initial patch
version early this week with:
 - a full scancode scan run, collecting the matched texts, detected
   license ids and scores
 - reviewing anything where there was a license detected (about 500+
   files) to ensure that the applied SPDX license was correct
 - reviewing anything where there was no detection but the patch license
   was not GPL-2.0 WITH Linux-syscall-note to ensure that the applied
   SPDX license was correct

This produced a worksheet with 20 files needing minor correction.  This
worksheet was then exported into 3 different .csv files for the
different types of files to be modified.

These .csv files were then reviewed by Greg.  Thomas wrote a script to
parse the csv files and add the proper SPDX tag to the file, in the
format that the file expected.  This script was further refined by Greg
based on the output to detect more types of files automatically and to
distinguish between header and source .c files (which need different
comment types.)  Finally Greg ran the script using the .csv files to
generate the patches.

Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org>
Reviewed-by: Philippe Ombredanne <pombredanne@nexb.com>
Reviewed-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-11-02 11:10:55 +01:00

460 lines
15 KiB
C
Raw Blame History

// SPDX-License-Identifier: GPL-2.0
/*
* ASCII values for a number of symbolic constants, printing functions,
* etc.
* Additions for SCSI 2 and Linux 2.2.x by D. Gilbert (990422)
* Additions for SCSI 3+ (SPC-3 T10/1416-D Rev 07 3 May 2002)
* by D. Gilbert and aeb (20020609)
* Updated to SPC-4 T10/1713-D Rev 36g, D. Gilbert 20130701
*/
#include <linux/blkdev.h>
#include <linux/module.h>
#include <linux/kernel.h>
#include <scsi/scsi.h>
#include <scsi/scsi_cmnd.h>
#include <scsi/scsi_device.h>
#include <scsi/scsi_host.h>
#include <scsi/scsi_eh.h>
#include <scsi/scsi_dbg.h>
/* Commands with service actions that change the command name */
#define THIRD_PARTY_COPY_OUT 0x83
#define THIRD_PARTY_COPY_IN 0x84
struct sa_name_list {
int opcode;
const struct value_name_pair *arr;
int arr_sz;
};
struct value_name_pair {
int value;
const char * name;
};
static const char * cdb_byte0_names[] = {
/* 00-03 */ "Test Unit Ready", "Rezero Unit/Rewind", NULL, "Request Sense",
/* 04-07 */ "Format Unit/Medium", "Read Block Limits", NULL,
"Reassign Blocks",
/* 08-0d */ "Read(6)", NULL, "Write(6)", "Seek(6)", NULL, NULL,
/* 0e-12 */ NULL, "Read Reverse", "Write Filemarks", "Space", "Inquiry",
/* 13-16 */ "Verify(6)", "Recover Buffered Data", "Mode Select(6)",
"Reserve(6)",
/* 17-1a */ "Release(6)", "Copy", "Erase", "Mode Sense(6)",
/* 1b-1d */ "Start/Stop Unit", "Receive Diagnostic", "Send Diagnostic",
/* 1e-1f */ "Prevent/Allow Medium Removal", NULL,
/* 20-22 */ NULL, NULL, NULL,
/* 23-28 */ "Read Format Capacities", "Set Window",
"Read Capacity(10)", NULL, NULL, "Read(10)",
/* 29-2d */ "Read Generation", "Write(10)", "Seek(10)", "Erase(10)",
"Read updated block",
/* 2e-31 */ "Write Verify(10)", "Verify(10)", "Search High", "Search Equal",
/* 32-34 */ "Search Low", "Set Limits", "Prefetch/Read Position",
/* 35-37 */ "Synchronize Cache(10)", "Lock/Unlock Cache(10)",
"Read Defect Data(10)",
/* 38-3c */ "Medium Scan", "Compare", "Copy Verify", "Write Buffer",
"Read Buffer",
/* 3d-3f */ "Update Block", "Read Long(10)", "Write Long(10)",
/* 40-41 */ "Change Definition", "Write Same(10)",
/* 42-48 */ "Unmap/Read sub-channel", "Read TOC/PMA/ATIP",
"Read density support", "Play audio(10)", "Get configuration",
"Play audio msf", "Sanitize/Play audio track/index",
/* 49-4f */ "Play track relative(10)", "Get event status notification",
"Pause/resume", "Log Select", "Log Sense", "Stop play/scan",
NULL,
/* 50-55 */ "Xdwrite", "Xpwrite, Read disk info", "Xdread, Read track info",
"Reserve track", "Send OPC info", "Mode Select(10)",
/* 56-5b */ "Reserve(10)", "Release(10)", "Repair track", "Read master cue",
"Mode Sense(10)", "Close track/session",
/* 5c-5f */ "Read buffer capacity", "Send cue sheet", "Persistent reserve in",
"Persistent reserve out",
/* 60-67 */ NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
/* 68-6f */ NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
/* 70-77 */ NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
/* 78-7f */ NULL, NULL, NULL, NULL, NULL, NULL, "Extended CDB",
"Variable length",
/* 80-84 */ "Xdwrite(16)", "Rebuild(16)", "Regenerate(16)",
"Third party copy out", "Third party copy in",
/* 85-89 */ "ATA command pass through(16)", "Access control in",
"Access control out", "Read(16)", "Compare and Write",
/* 8a-8f */ "Write(16)", "ORWrite", "Read attributes", "Write attributes",
"Write and verify(16)", "Verify(16)",
/* 90-94 */ "Pre-fetch(16)", "Synchronize cache(16)",
"Lock/unlock cache(16)", "Write same(16)", NULL,
/* 95-99 */ NULL, NULL, NULL, NULL, NULL,
/* 9a-9f */ NULL, NULL, NULL, "Service action bidirectional",
"Service action in(16)", "Service action out(16)",
/* a0-a5 */ "Report luns", "ATA command pass through(12)/Blank",
"Security protocol in", "Maintenance in", "Maintenance out",
"Move medium/play audio(12)",
/* a6-a9 */ "Exchange medium", "Move medium attached", "Read(12)",
"Play track relative(12)",
/* aa-ae */ "Write(12)", NULL, "Erase(12), Get Performance",
"Read DVD structure", "Write and verify(12)",
/* af-b1 */ "Verify(12)", "Search data high(12)", "Search data equal(12)",
/* b2-b4 */ "Search data low(12)", "Set limits(12)",
"Read element status attached",
/* b5-b6 */ "Security protocol out", "Send volume tag, set streaming",
/* b7-b9 */ "Read defect data(12)", "Read element status", "Read CD msf",
/* ba-bc */ "Redundancy group (in), Scan",
"Redundancy group (out), Set cd-rom speed", "Spare (in), Play cd",
/* bd-bf */ "Spare (out), Mechanism status", "Volume set (in), Read cd",
"Volume set (out), Send DVD structure",
};
static const struct value_name_pair maint_in_arr[] = {
{0x5, "Report identifying information"},
{0xa, "Report target port groups"},
{0xb, "Report aliases"},
{0xc, "Report supported operation codes"},
{0xd, "Report supported task management functions"},
{0xe, "Report priority"},
{0xf, "Report timestamp"},
{0x10, "Management protocol in"},
};
#define MAINT_IN_SZ ARRAY_SIZE(maint_in_arr)
static const struct value_name_pair maint_out_arr[] = {
{0x6, "Set identifying information"},
{0xa, "Set target port groups"},
{0xb, "Change aliases"},
{0xc, "Remove I_T nexus"},
{0xe, "Set priority"},
{0xf, "Set timestamp"},
{0x10, "Management protocol out"},
};
#define MAINT_OUT_SZ ARRAY_SIZE(maint_out_arr)
static const struct value_name_pair serv_in12_arr[] = {
{0x1, "Read media serial number"},
};
#define SERV_IN12_SZ ARRAY_SIZE(serv_in12_arr)
static const struct value_name_pair serv_out12_arr[] = {
{-1, "dummy entry"},
};
#define SERV_OUT12_SZ ARRAY_SIZE(serv_out12_arr)
static const struct value_name_pair serv_bidi_arr[] = {
{-1, "dummy entry"},
};
#define SERV_BIDI_SZ ARRAY_SIZE(serv_bidi_arr)
static const struct value_name_pair serv_in16_arr[] = {
{0x10, "Read capacity(16)"},
{0x11, "Read long(16)"},
{0x12, "Get LBA status"},
{0x13, "Report referrals"},
};
#define SERV_IN16_SZ ARRAY_SIZE(serv_in16_arr)
static const struct value_name_pair serv_out16_arr[] = {
{0x11, "Write long(16)"},
{0x1f, "Notify data transfer device(16)"},
};
#define SERV_OUT16_SZ ARRAY_SIZE(serv_out16_arr)
static const struct value_name_pair pr_in_arr[] = {
{0x0, "Persistent reserve in, read keys"},
{0x1, "Persistent reserve in, read reservation"},
{0x2, "Persistent reserve in, report capabilities"},
{0x3, "Persistent reserve in, read full status"},
};
#define PR_IN_SZ ARRAY_SIZE(pr_in_arr)
static const struct value_name_pair pr_out_arr[] = {
{0x0, "Persistent reserve out, register"},
{0x1, "Persistent reserve out, reserve"},
{0x2, "Persistent reserve out, release"},
{0x3, "Persistent reserve out, clear"},
{0x4, "Persistent reserve out, preempt"},
{0x5, "Persistent reserve out, preempt and abort"},
{0x6, "Persistent reserve out, register and ignore existing key"},
{0x7, "Persistent reserve out, register and move"},
};
#define PR_OUT_SZ ARRAY_SIZE(pr_out_arr)
/* SPC-4 rev 34 renamed the Extended Copy opcode to Third Party Copy Out.
LID1 (List Identifier length: 1 byte) is the Extended Copy found in SPC-2
and SPC-3 */
static const struct value_name_pair tpc_out_arr[] = {
{0x0, "Extended copy(LID1)"},
{0x1, "Extended copy(LID4)"},
{0x10, "Populate token"},
{0x11, "Write using token"},
{0x1c, "Copy operation abort"},
};
#define TPC_OUT_SZ ARRAY_SIZE(tpc_out_arr)
static const struct value_name_pair tpc_in_arr[] = {
{0x0, "Receive copy status(LID1)"},
{0x1, "Receive copy data(LID1)"},
{0x3, "Receive copy operating parameters"},
{0x4, "Receive copy failure details(LID1)"},
{0x5, "Receive copy status(LID4)"},
{0x6, "Receive copy data(LID4)"},
{0x7, "Receive ROD token information"},
{0x8, "Report all ROD tokens"},
};
#define TPC_IN_SZ ARRAY_SIZE(tpc_in_arr)
static const struct value_name_pair variable_length_arr[] = {
{0x1, "Rebuild(32)"},
{0x2, "Regenerate(32)"},
{0x3, "Xdread(32)"},
{0x4, "Xdwrite(32)"},
{0x5, "Xdwrite extended(32)"},
{0x6, "Xpwrite(32)"},
{0x7, "Xdwriteread(32)"},
{0x8, "Xdwrite extended(64)"},
{0x9, "Read(32)"},
{0xa, "Verify(32)"},
{0xb, "Write(32)"},
{0xc, "Write an verify(32)"},
{0xd, "Write same(32)"},
{0x8801, "Format OSD"},
{0x8802, "Create (osd)"},
{0x8803, "List (osd)"},
{0x8805, "Read (osd)"},
{0x8806, "Write (osd)"},
{0x8807, "Append (osd)"},
{0x8808, "Flush (osd)"},
{0x880a, "Remove (osd)"},
{0x880b, "Create partition (osd)"},
{0x880c, "Remove partition (osd)"},
{0x880e, "Get attributes (osd)"},
{0x880f, "Set attributes (osd)"},
{0x8812, "Create and write (osd)"},
{0x8815, "Create collection (osd)"},
{0x8816, "Remove collection (osd)"},
{0x8817, "List collection (osd)"},
{0x8818, "Set key (osd)"},
{0x8819, "Set master key (osd)"},
{0x881a, "Flush collection (osd)"},
{0x881b, "Flush partition (osd)"},
{0x881c, "Flush OSD"},
{0x8f7e, "Perform SCSI command (osd)"},
{0x8f7f, "Perform task management function (osd)"},
};
#define VARIABLE_LENGTH_SZ ARRAY_SIZE(variable_length_arr)
static struct sa_name_list sa_names_arr[] = {
{VARIABLE_LENGTH_CMD, variable_length_arr, VARIABLE_LENGTH_SZ},
{MAINTENANCE_IN, maint_in_arr, MAINT_IN_SZ},
{MAINTENANCE_OUT, maint_out_arr, MAINT_OUT_SZ},
{PERSISTENT_RESERVE_IN, pr_in_arr, PR_IN_SZ},
{PERSISTENT_RESERVE_OUT, pr_out_arr, PR_OUT_SZ},
{SERVICE_ACTION_IN_12, serv_in12_arr, SERV_IN12_SZ},
{SERVICE_ACTION_OUT_12, serv_out12_arr, SERV_OUT12_SZ},
{SERVICE_ACTION_BIDIRECTIONAL, serv_bidi_arr, SERV_BIDI_SZ},
{SERVICE_ACTION_IN_16, serv_in16_arr, SERV_IN16_SZ},
{SERVICE_ACTION_OUT_16, serv_out16_arr, SERV_OUT16_SZ},
{THIRD_PARTY_COPY_IN, tpc_in_arr, TPC_IN_SZ},
{THIRD_PARTY_COPY_OUT, tpc_out_arr, TPC_OUT_SZ},
{0, NULL, 0},
};
bool scsi_opcode_sa_name(int opcode, int service_action,
const char **cdb_name, const char **sa_name)
{
struct sa_name_list *sa_name_ptr;
const struct value_name_pair *arr = NULL;
int arr_sz, k;
*cdb_name = NULL;
if (opcode >= VENDOR_SPECIFIC_CDB)
return false;
if (opcode < ARRAY_SIZE(cdb_byte0_names))
*cdb_name = cdb_byte0_names[opcode];
for (sa_name_ptr = sa_names_arr; sa_name_ptr->arr; ++sa_name_ptr) {
if (sa_name_ptr->opcode == opcode) {
arr = sa_name_ptr->arr;
arr_sz = sa_name_ptr->arr_sz;
break;
}
}
if (!arr)
return false;
for (k = 0; k < arr_sz; ++k, ++arr) {
if (service_action == arr->value)
break;
}
if (k < arr_sz)
*sa_name = arr->name;
return true;
}
struct error_info {
unsigned short code12; /* 0x0302 looks better than 0x03,0x02 */
unsigned short size;
};
/*
* There are 700+ entries in this table. To save space, we don't store
* (code, pointer) pairs, which would make sizeof(struct
* error_info)==16 on 64 bits. Rather, the second element just stores
* the size (including \0) of the corresponding string, and we use the
* sum of these to get the appropriate offset into additional_text
* defined below. This approach saves 12 bytes per entry.
*/
static const struct error_info additional[] =
{
#define SENSE_CODE(c, s) {c, sizeof(s)},
#include "sense_codes.h"
#undef SENSE_CODE
};
static const char *additional_text =
#define SENSE_CODE(c, s) s "\0"
#include "sense_codes.h"
#undef SENSE_CODE
;
struct error_info2 {
unsigned char code1, code2_min, code2_max;
const char * str;
const char * fmt;
};
static const struct error_info2 additional2[] =
{
{0x40, 0x00, 0x7f, "Ram failure", ""},
{0x40, 0x80, 0xff, "Diagnostic failure on component", ""},
{0x41, 0x00, 0xff, "Data path failure", ""},
{0x42, 0x00, 0xff, "Power-on or self-test failure", ""},
{0x4D, 0x00, 0xff, "Tagged overlapped commands", "task tag "},
{0x70, 0x00, 0xff, "Decompression exception", "short algorithm id of "},
{0, 0, 0, NULL, NULL}
};
/* description of the sense key values */
static const char * const snstext[] = {
"No Sense", /* 0: There is no sense information */
"Recovered Error", /* 1: The last command completed successfully
but used error correction */
"Not Ready", /* 2: The addressed target is not ready */
"Medium Error", /* 3: Data error detected on the medium */
"Hardware Error", /* 4: Controller or device failure */
"Illegal Request", /* 5: Error in request */
"Unit Attention", /* 6: Removable medium was changed, or
the target has been reset, or ... */
"Data Protect", /* 7: Access to the data is blocked */
"Blank Check", /* 8: Reached unexpected written or unwritten
region of the medium */
"Vendor Specific(9)",
"Copy Aborted", /* A: COPY or COMPARE was aborted */
"Aborted Command", /* B: The target aborted the command */
"Equal", /* C: A SEARCH DATA command found data equal,
reserved in SPC-4 rev 36 */
"Volume Overflow", /* D: Medium full with still data to be written */
"Miscompare", /* E: Source data and data on the medium
do not agree */
"Completed", /* F: command completed sense data reported,
may occur for successful command */
};
/* Get sense key string or NULL if not available */
const char *
scsi_sense_key_string(unsigned char key)
{
if (key < ARRAY_SIZE(snstext))
return snstext[key];
return NULL;
}
EXPORT_SYMBOL(scsi_sense_key_string);
/*
* Get additional sense code string or NULL if not available.
* This string may contain a "%x" and should be printed with ascq as arg.
*/
const char *
scsi_extd_sense_format(unsigned char asc, unsigned char ascq, const char **fmt)
{
int i;
unsigned short code = ((asc << 8) | ascq);
unsigned offset = 0;
*fmt = NULL;
for (i = 0; i < ARRAY_SIZE(additional); i++) {
if (additional[i].code12 == code)
return additional_text + offset;
offset += additional[i].size;
}
for (i = 0; additional2[i].fmt; i++) {
if (additional2[i].code1 == asc &&
ascq >= additional2[i].code2_min &&
ascq <= additional2[i].code2_max) {
*fmt = additional2[i].fmt;
return additional2[i].str;
}
}
return NULL;
}
EXPORT_SYMBOL(scsi_extd_sense_format);
static const char * const hostbyte_table[]={
"DID_OK", "DID_NO_CONNECT", "DID_BUS_BUSY", "DID_TIME_OUT", "DID_BAD_TARGET",
"DID_ABORT", "DID_PARITY", "DID_ERROR", "DID_RESET", "DID_BAD_INTR",
"DID_PASSTHROUGH", "DID_SOFT_ERROR", "DID_IMM_RETRY", "DID_REQUEUE",
"DID_TRANSPORT_DISRUPTED", "DID_TRANSPORT_FAILFAST", "DID_TARGET_FAILURE",
"DID_NEXUS_FAILURE" };
static const char * const driverbyte_table[]={
"DRIVER_OK", "DRIVER_BUSY", "DRIVER_SOFT", "DRIVER_MEDIA", "DRIVER_ERROR",
"DRIVER_INVALID", "DRIVER_TIMEOUT", "DRIVER_HARD", "DRIVER_SENSE"};
const char *scsi_hostbyte_string(int result)
{
const char *hb_string = NULL;
int hb = host_byte(result);
if (hb < ARRAY_SIZE(hostbyte_table))
hb_string = hostbyte_table[hb];
return hb_string;
}
EXPORT_SYMBOL(scsi_hostbyte_string);
const char *scsi_driverbyte_string(int result)
{
const char *db_string = NULL;
int db = driver_byte(result);
if (db < ARRAY_SIZE(driverbyte_table))
db_string = driverbyte_table[db];
return db_string;
}
EXPORT_SYMBOL(scsi_driverbyte_string);
#define scsi_mlreturn_name(result) { result, #result }
static const struct value_name_pair scsi_mlreturn_arr[] = {
scsi_mlreturn_name(NEEDS_RETRY),
scsi_mlreturn_name(SUCCESS),
scsi_mlreturn_name(FAILED),
scsi_mlreturn_name(QUEUED),
scsi_mlreturn_name(SOFT_ERROR),
scsi_mlreturn_name(ADD_TO_MLQUEUE),
scsi_mlreturn_name(TIMEOUT_ERROR),
scsi_mlreturn_name(SCSI_RETURN_NOT_HANDLED),
scsi_mlreturn_name(FAST_IO_FAIL)
};
const char *scsi_mlreturn_string(int result)
{
const struct value_name_pair *arr = scsi_mlreturn_arr;
int k;
for (k = 0; k < ARRAY_SIZE(scsi_mlreturn_arr); ++k, ++arr) {
if (result == arr->value)
return arr->name;
}
return NULL;
}
EXPORT_SYMBOL(scsi_mlreturn_string);
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