434 lines
11 KiB
C
434 lines
11 KiB
C
// SPDX-License-Identifier: GPL-2.0
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#include <stdio.h>
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#include <string.h>
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#include <inttypes.h>
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#include "event-parse.h"
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typedef unsigned long sector_t;
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typedef uint64_t u64;
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typedef unsigned int u32;
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/*
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* SCSI opcodes
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*/
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#define TEST_UNIT_READY 0x00
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#define REZERO_UNIT 0x01
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#define REQUEST_SENSE 0x03
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#define FORMAT_UNIT 0x04
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#define READ_BLOCK_LIMITS 0x05
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#define REASSIGN_BLOCKS 0x07
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#define INITIALIZE_ELEMENT_STATUS 0x07
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#define READ_6 0x08
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#define WRITE_6 0x0a
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#define SEEK_6 0x0b
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#define READ_REVERSE 0x0f
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#define WRITE_FILEMARKS 0x10
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#define SPACE 0x11
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#define INQUIRY 0x12
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#define RECOVER_BUFFERED_DATA 0x14
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#define MODE_SELECT 0x15
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#define RESERVE 0x16
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#define RELEASE 0x17
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#define COPY 0x18
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#define ERASE 0x19
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#define MODE_SENSE 0x1a
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#define START_STOP 0x1b
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#define RECEIVE_DIAGNOSTIC 0x1c
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#define SEND_DIAGNOSTIC 0x1d
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#define ALLOW_MEDIUM_REMOVAL 0x1e
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#define READ_FORMAT_CAPACITIES 0x23
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#define SET_WINDOW 0x24
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#define READ_CAPACITY 0x25
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#define READ_10 0x28
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#define WRITE_10 0x2a
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#define SEEK_10 0x2b
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#define POSITION_TO_ELEMENT 0x2b
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#define WRITE_VERIFY 0x2e
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#define VERIFY 0x2f
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#define SEARCH_HIGH 0x30
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#define SEARCH_EQUAL 0x31
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#define SEARCH_LOW 0x32
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#define SET_LIMITS 0x33
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#define PRE_FETCH 0x34
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#define READ_POSITION 0x34
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#define SYNCHRONIZE_CACHE 0x35
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#define LOCK_UNLOCK_CACHE 0x36
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#define READ_DEFECT_DATA 0x37
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#define MEDIUM_SCAN 0x38
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#define COMPARE 0x39
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#define COPY_VERIFY 0x3a
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#define WRITE_BUFFER 0x3b
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#define READ_BUFFER 0x3c
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#define UPDATE_BLOCK 0x3d
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#define READ_LONG 0x3e
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#define WRITE_LONG 0x3f
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#define CHANGE_DEFINITION 0x40
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#define WRITE_SAME 0x41
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#define UNMAP 0x42
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#define READ_TOC 0x43
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#define READ_HEADER 0x44
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#define GET_EVENT_STATUS_NOTIFICATION 0x4a
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#define LOG_SELECT 0x4c
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#define LOG_SENSE 0x4d
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#define XDWRITEREAD_10 0x53
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#define MODE_SELECT_10 0x55
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#define RESERVE_10 0x56
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#define RELEASE_10 0x57
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#define MODE_SENSE_10 0x5a
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#define PERSISTENT_RESERVE_IN 0x5e
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#define PERSISTENT_RESERVE_OUT 0x5f
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#define VARIABLE_LENGTH_CMD 0x7f
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#define REPORT_LUNS 0xa0
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#define SECURITY_PROTOCOL_IN 0xa2
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#define MAINTENANCE_IN 0xa3
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#define MAINTENANCE_OUT 0xa4
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#define MOVE_MEDIUM 0xa5
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#define EXCHANGE_MEDIUM 0xa6
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#define READ_12 0xa8
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#define SERVICE_ACTION_OUT_12 0xa9
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#define WRITE_12 0xaa
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#define SERVICE_ACTION_IN_12 0xab
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#define WRITE_VERIFY_12 0xae
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#define VERIFY_12 0xaf
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#define SEARCH_HIGH_12 0xb0
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#define SEARCH_EQUAL_12 0xb1
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#define SEARCH_LOW_12 0xb2
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#define SECURITY_PROTOCOL_OUT 0xb5
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#define READ_ELEMENT_STATUS 0xb8
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#define SEND_VOLUME_TAG 0xb6
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#define WRITE_LONG_2 0xea
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#define EXTENDED_COPY 0x83
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#define RECEIVE_COPY_RESULTS 0x84
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#define ACCESS_CONTROL_IN 0x86
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#define ACCESS_CONTROL_OUT 0x87
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#define READ_16 0x88
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#define WRITE_16 0x8a
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#define READ_ATTRIBUTE 0x8c
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#define WRITE_ATTRIBUTE 0x8d
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#define VERIFY_16 0x8f
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#define SYNCHRONIZE_CACHE_16 0x91
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#define WRITE_SAME_16 0x93
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#define SERVICE_ACTION_BIDIRECTIONAL 0x9d
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#define SERVICE_ACTION_IN_16 0x9e
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#define SERVICE_ACTION_OUT_16 0x9f
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/* values for service action in */
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#define SAI_READ_CAPACITY_16 0x10
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#define SAI_GET_LBA_STATUS 0x12
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/* values for VARIABLE_LENGTH_CMD service action codes
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* see spc4r17 Section D.3.5, table D.7 and D.8 */
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#define VLC_SA_RECEIVE_CREDENTIAL 0x1800
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/* values for maintenance in */
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#define MI_REPORT_IDENTIFYING_INFORMATION 0x05
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#define MI_REPORT_TARGET_PGS 0x0a
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#define MI_REPORT_ALIASES 0x0b
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#define MI_REPORT_SUPPORTED_OPERATION_CODES 0x0c
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#define MI_REPORT_SUPPORTED_TASK_MANAGEMENT_FUNCTIONS 0x0d
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#define MI_REPORT_PRIORITY 0x0e
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#define MI_REPORT_TIMESTAMP 0x0f
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#define MI_MANAGEMENT_PROTOCOL_IN 0x10
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/* value for MI_REPORT_TARGET_PGS ext header */
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#define MI_EXT_HDR_PARAM_FMT 0x20
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/* values for maintenance out */
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#define MO_SET_IDENTIFYING_INFORMATION 0x06
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#define MO_SET_TARGET_PGS 0x0a
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#define MO_CHANGE_ALIASES 0x0b
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#define MO_SET_PRIORITY 0x0e
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#define MO_SET_TIMESTAMP 0x0f
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#define MO_MANAGEMENT_PROTOCOL_OUT 0x10
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/* values for variable length command */
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#define XDREAD_32 0x03
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#define XDWRITE_32 0x04
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#define XPWRITE_32 0x06
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#define XDWRITEREAD_32 0x07
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#define READ_32 0x09
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#define VERIFY_32 0x0a
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#define WRITE_32 0x0b
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#define WRITE_SAME_32 0x0d
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#define SERVICE_ACTION16(cdb) (cdb[1] & 0x1f)
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#define SERVICE_ACTION32(cdb) ((cdb[8] << 8) | cdb[9])
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static const char *
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scsi_trace_misc(struct trace_seq *, unsigned char *, int);
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static const char *
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scsi_trace_rw6(struct trace_seq *p, unsigned char *cdb, int len)
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{
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const char *ret = p->buffer + p->len;
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sector_t lba = 0, txlen = 0;
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lba |= ((cdb[1] & 0x1F) << 16);
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lba |= (cdb[2] << 8);
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lba |= cdb[3];
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txlen = cdb[4];
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trace_seq_printf(p, "lba=%llu txlen=%llu",
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(unsigned long long)lba, (unsigned long long)txlen);
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trace_seq_putc(p, 0);
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return ret;
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}
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static const char *
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scsi_trace_rw10(struct trace_seq *p, unsigned char *cdb, int len)
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{
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const char *ret = p->buffer + p->len;
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sector_t lba = 0, txlen = 0;
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lba |= (cdb[2] << 24);
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lba |= (cdb[3] << 16);
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lba |= (cdb[4] << 8);
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lba |= cdb[5];
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txlen |= (cdb[7] << 8);
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txlen |= cdb[8];
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trace_seq_printf(p, "lba=%llu txlen=%llu protect=%u",
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(unsigned long long)lba, (unsigned long long)txlen,
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cdb[1] >> 5);
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if (cdb[0] == WRITE_SAME)
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trace_seq_printf(p, " unmap=%u", cdb[1] >> 3 & 1);
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trace_seq_putc(p, 0);
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return ret;
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}
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static const char *
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scsi_trace_rw12(struct trace_seq *p, unsigned char *cdb, int len)
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{
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const char *ret = p->buffer + p->len;
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sector_t lba = 0, txlen = 0;
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lba |= (cdb[2] << 24);
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lba |= (cdb[3] << 16);
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lba |= (cdb[4] << 8);
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lba |= cdb[5];
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txlen |= (cdb[6] << 24);
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txlen |= (cdb[7] << 16);
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txlen |= (cdb[8] << 8);
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txlen |= cdb[9];
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trace_seq_printf(p, "lba=%llu txlen=%llu protect=%u",
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(unsigned long long)lba, (unsigned long long)txlen,
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cdb[1] >> 5);
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trace_seq_putc(p, 0);
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return ret;
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}
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static const char *
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scsi_trace_rw16(struct trace_seq *p, unsigned char *cdb, int len)
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{
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const char *ret = p->buffer + p->len;
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sector_t lba = 0, txlen = 0;
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lba |= ((u64)cdb[2] << 56);
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lba |= ((u64)cdb[3] << 48);
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lba |= ((u64)cdb[4] << 40);
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lba |= ((u64)cdb[5] << 32);
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lba |= (cdb[6] << 24);
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lba |= (cdb[7] << 16);
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lba |= (cdb[8] << 8);
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lba |= cdb[9];
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txlen |= (cdb[10] << 24);
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txlen |= (cdb[11] << 16);
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txlen |= (cdb[12] << 8);
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txlen |= cdb[13];
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trace_seq_printf(p, "lba=%llu txlen=%llu protect=%u",
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(unsigned long long)lba, (unsigned long long)txlen,
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cdb[1] >> 5);
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if (cdb[0] == WRITE_SAME_16)
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trace_seq_printf(p, " unmap=%u", cdb[1] >> 3 & 1);
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trace_seq_putc(p, 0);
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return ret;
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}
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static const char *
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scsi_trace_rw32(struct trace_seq *p, unsigned char *cdb, int len)
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{
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const char *ret = p->buffer + p->len, *cmd;
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sector_t lba = 0, txlen = 0;
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u32 ei_lbrt = 0;
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switch (SERVICE_ACTION32(cdb)) {
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case READ_32:
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cmd = "READ";
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break;
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case VERIFY_32:
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cmd = "VERIFY";
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break;
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case WRITE_32:
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cmd = "WRITE";
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break;
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case WRITE_SAME_32:
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cmd = "WRITE_SAME";
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break;
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default:
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trace_seq_printf(p, "UNKNOWN");
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goto out;
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}
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lba |= ((u64)cdb[12] << 56);
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lba |= ((u64)cdb[13] << 48);
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lba |= ((u64)cdb[14] << 40);
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lba |= ((u64)cdb[15] << 32);
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lba |= (cdb[16] << 24);
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lba |= (cdb[17] << 16);
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lba |= (cdb[18] << 8);
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lba |= cdb[19];
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ei_lbrt |= (cdb[20] << 24);
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ei_lbrt |= (cdb[21] << 16);
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ei_lbrt |= (cdb[22] << 8);
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ei_lbrt |= cdb[23];
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txlen |= (cdb[28] << 24);
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txlen |= (cdb[29] << 16);
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txlen |= (cdb[30] << 8);
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txlen |= cdb[31];
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trace_seq_printf(p, "%s_32 lba=%llu txlen=%llu protect=%u ei_lbrt=%u",
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cmd, (unsigned long long)lba,
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(unsigned long long)txlen, cdb[10] >> 5, ei_lbrt);
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if (SERVICE_ACTION32(cdb) == WRITE_SAME_32)
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trace_seq_printf(p, " unmap=%u", cdb[10] >> 3 & 1);
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out:
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trace_seq_putc(p, 0);
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return ret;
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}
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static const char *
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scsi_trace_unmap(struct trace_seq *p, unsigned char *cdb, int len)
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{
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const char *ret = p->buffer + p->len;
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unsigned int regions = cdb[7] << 8 | cdb[8];
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trace_seq_printf(p, "regions=%u", (regions - 8) / 16);
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trace_seq_putc(p, 0);
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return ret;
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}
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static const char *
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scsi_trace_service_action_in(struct trace_seq *p, unsigned char *cdb, int len)
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{
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const char *ret = p->buffer + p->len, *cmd;
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sector_t lba = 0;
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u32 alloc_len = 0;
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switch (SERVICE_ACTION16(cdb)) {
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case SAI_READ_CAPACITY_16:
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cmd = "READ_CAPACITY_16";
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break;
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case SAI_GET_LBA_STATUS:
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cmd = "GET_LBA_STATUS";
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break;
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default:
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trace_seq_printf(p, "UNKNOWN");
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goto out;
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}
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lba |= ((u64)cdb[2] << 56);
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lba |= ((u64)cdb[3] << 48);
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lba |= ((u64)cdb[4] << 40);
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lba |= ((u64)cdb[5] << 32);
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lba |= (cdb[6] << 24);
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lba |= (cdb[7] << 16);
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lba |= (cdb[8] << 8);
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lba |= cdb[9];
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alloc_len |= (cdb[10] << 24);
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alloc_len |= (cdb[11] << 16);
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alloc_len |= (cdb[12] << 8);
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alloc_len |= cdb[13];
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trace_seq_printf(p, "%s lba=%llu alloc_len=%u", cmd,
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(unsigned long long)lba, alloc_len);
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out:
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trace_seq_putc(p, 0);
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return ret;
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}
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static const char *
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scsi_trace_varlen(struct trace_seq *p, unsigned char *cdb, int len)
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{
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switch (SERVICE_ACTION32(cdb)) {
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case READ_32:
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case VERIFY_32:
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case WRITE_32:
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case WRITE_SAME_32:
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return scsi_trace_rw32(p, cdb, len);
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default:
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return scsi_trace_misc(p, cdb, len);
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}
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}
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static const char *
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scsi_trace_misc(struct trace_seq *p, unsigned char *cdb, int len)
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{
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const char *ret = p->buffer + p->len;
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trace_seq_printf(p, "-");
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trace_seq_putc(p, 0);
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return ret;
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}
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const char *
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scsi_trace_parse_cdb(struct trace_seq *p, unsigned char *cdb, int len)
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{
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switch (cdb[0]) {
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case READ_6:
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case WRITE_6:
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return scsi_trace_rw6(p, cdb, len);
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case READ_10:
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case VERIFY:
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case WRITE_10:
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case WRITE_SAME:
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return scsi_trace_rw10(p, cdb, len);
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case READ_12:
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case VERIFY_12:
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case WRITE_12:
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return scsi_trace_rw12(p, cdb, len);
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case READ_16:
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case VERIFY_16:
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case WRITE_16:
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case WRITE_SAME_16:
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return scsi_trace_rw16(p, cdb, len);
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case UNMAP:
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return scsi_trace_unmap(p, cdb, len);
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case SERVICE_ACTION_IN_16:
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return scsi_trace_service_action_in(p, cdb, len);
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case VARIABLE_LENGTH_CMD:
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return scsi_trace_varlen(p, cdb, len);
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default:
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return scsi_trace_misc(p, cdb, len);
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}
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}
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unsigned long long process_scsi_trace_parse_cdb(struct trace_seq *s,
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unsigned long long *args)
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{
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scsi_trace_parse_cdb(s, (unsigned char *) (unsigned long) args[1], args[2]);
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return 0;
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}
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int PEVENT_PLUGIN_LOADER(struct pevent *pevent)
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{
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pevent_register_print_function(pevent,
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process_scsi_trace_parse_cdb,
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PEVENT_FUNC_ARG_STRING,
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"scsi_trace_parse_cdb",
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PEVENT_FUNC_ARG_PTR,
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PEVENT_FUNC_ARG_PTR,
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PEVENT_FUNC_ARG_INT,
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PEVENT_FUNC_ARG_VOID);
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return 0;
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}
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void PEVENT_PLUGIN_UNLOADER(struct pevent *pevent)
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{
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pevent_unregister_print_function(pevent, process_scsi_trace_parse_cdb,
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"scsi_trace_parse_cdb");
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}
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