granicus.if.org Git - strace/blob - scsi.c

   1 /*
   2  * Copyright (c) 2007 Vladimir Nadvornik <nadvornik@suse.cz>
   3  * Copyright (c) 2007-2018 Dmitry V. Levin <ldv@altlinux.org>
   4  * Copyright (c) 2007-2019 The strace developers.
   5  * All rights reserved.
   6  *
   7  * SPDX-License-Identifier: LGPL-2.1-or-later
   8  */
   9
  10 #include "defs.h"
  11
  12 #ifdef HAVE_SCSI_SG_H
  13 # include <scsi/sg.h>
  14 #endif
  15
  16 #define XLAT_MACROS_ONLY
  17 # include "xlat/scsi_sg_commands.h"
  18 #undef XLAT_MACROS_ONLY
  19 #include "xlat/sg_scsi_reset.h"
  20
  21 static int
  22 decode_sg_io(struct tcb *const tcp, const uint32_t iid,
  23              const kernel_ulong_t arg)
  24 {
  25         switch (iid) {
  26                 case 'S':
  27                         return decode_sg_io_v3(tcp, arg);
  28                 case 'Q':
  29                         return decode_sg_io_v4(tcp, arg);
  30                 default:
  31                         tprintf("[%u]", iid);
  32                         return RVAL_IOCTL_DECODED;
  33         }
  34
  35 }
  36
  37 #ifdef HAVE_SCSI_SG_H
  38
  39 static int
  40 decode_sg_scsi_id(struct tcb *const tcp, const kernel_ulong_t arg)
  41 {
  42         struct sg_scsi_id id;
  43
  44         if (entering(tcp))
  45                 return 0;
  46
  47         tprints(", ");
  48         if (!umove_or_printaddr(tcp, arg, &id)) {
  49                 tprintf("{host_no=%d"
  50                         ", channel=%d"
  51                         ", scsi_id=%#x"
  52                         ", lun=%d"
  53                         ", scsi_type=%#x"
  54                         ", h_cmd_per_lun=%hd"
  55                         ", d_queue_depth=%hd}",
  56                         id.host_no,
  57                         id.channel,
  58                         id.scsi_id,
  59                         id.lun,
  60                         id.scsi_type,
  61                         id.h_cmd_per_lun,
  62                         id.d_queue_depth);
  63         }
  64         return RVAL_IOCTL_DECODED;
  65 }
  66
  67 #endif /* HAVE_SCSI_SG_H */
  68
  69 int
  70 scsi_ioctl(struct tcb *const tcp, const unsigned int code,
  71            const kernel_ulong_t arg)
  72 {
  73         switch (code) {
  74         case SG_IO:
  75                 if (entering(tcp)) {
  76                         uint32_t iid;
  77
  78                         tprints(", ");
  79                         if (umove_or_printaddr(tcp, arg, &iid)) {
  80                                 break;
  81                         } else {
  82                                 return decode_sg_io(tcp, iid, arg);
  83                         }
  84                 } else {
  85                         uint32_t *piid = get_tcb_priv_data(tcp);
  86                         if (piid)
  87                                 decode_sg_io(tcp, *piid, arg);
  88                         tprints("}");
  89                         break;
  90                 }
  91
  92 #ifdef HAVE_SCSI_SG_H
  93         /* returns struct sg_scsi_id */
  94         case SG_GET_SCSI_ID:
  95                 return decode_sg_scsi_id(tcp, arg);
  96         /* returns struct sg_req_info */
  97         case SG_GET_REQUEST_TABLE:
  98                 return decode_sg_req_info(tcp, arg);
  99 #endif /* HAVE_SCSI_SG_H */
 100
 101         /* takes a value by pointer */
 102         case SG_SCSI_RESET: {
 103                 unsigned int val;
 104                 tprints(", ");
 105                 if (!umove_or_printaddr(tcp, arg, &val)) {
 106                         tprints("[");
 107                         if (val & SG_SCSI_RESET_NO_ESCALATE) {
 108                                 printxval(sg_scsi_reset,
 109                                           SG_SCSI_RESET_NO_ESCALATE, 0);
 110                                 tprints("|");
 111                         }
 112                         printxval(sg_scsi_reset,
 113                                   val & ~SG_SCSI_RESET_NO_ESCALATE,
 114                                   "SG_SCSI_RESET_???");
 115                         tprints("]");
 116
 117                 }
 118                 break;
 119         }
 120
 121         /* takes a signed int by pointer */
 122         case SG_NEXT_CMD_LEN:
 123         case SG_SET_COMMAND_Q:
 124         case SG_SET_DEBUG:
 125         case SG_SET_FORCE_LOW_DMA:
 126         case SG_SET_FORCE_PACK_ID:
 127         case SG_SET_KEEP_ORPHAN:
 128         case SG_SET_RESERVED_SIZE:
 129         case SG_SET_TIMEOUT:
 130                 tprints(", ");
 131                 printnum_int(tcp, arg, "%d");
 132                 break;
 133
 134         /* returns a signed int by pointer */
 135         case SG_EMULATED_HOST:
 136         case SG_GET_ACCESS_COUNT:
 137         case SG_GET_COMMAND_Q:
 138         case SG_GET_KEEP_ORPHAN:
 139         case SG_GET_LOW_DMA:
 140         case SG_GET_NUM_WAITING:
 141         case SG_GET_PACK_ID:
 142         case SG_GET_RESERVED_SIZE:
 143         case SG_GET_SG_TABLESIZE:
 144         case SG_GET_TRANSFORM:
 145         case SG_GET_VERSION_NUM:
 146                 if (entering(tcp))
 147                         return 0;
 148                 tprints(", ");
 149                 printnum_int(tcp, arg, "%d");
 150                 break;
 151
 152         /* takes an integer by value */
 153         case SG_SET_TRANSFORM:
 154                 tprintf(", %#x", (unsigned int) arg);
 155                 break;
 156
 157         /* no arguments */
 158         case SG_GET_TIMEOUT:
 159                 break;
 160
 161         default:
 162                 return RVAL_DECODED;
 163         }
 164
 165         return RVAL_IOCTL_DECODED;
 166 }