blob: ee26dc1f8aa231d4cef773d8a20da12989d4ba74 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
|
#!/bin/sh
# provide the shortest possible unique hardware path to a device
# for the Linux Persistent Device Naming scheme
#
# Copyright (C) 2005-2006 SUSE Linux Products GmbH
# Author:
# Hannes Reinecke <hare@suse.de>
#
# This program is free software; you can redistribute it and/or modify it
# under the terms of the GNU General Public License as published by the
# Free Software Foundation version 2 of the License.
SYSFS=/sys
RESULT=1
TYPE=
OPWD="`pwd`"
full_sysfs_path=
full_sysfs_device_path=
if [ -z "$DEVPATH" -a -z "$1" ] ; then
exit 1
fi
if [ -z "$DEVPATH" ] ; then
case "$1" in
$SYSFS/*)
DEVPATH="${1#$SYSFS}"
;;
*)
DEVPATH=$1
;;
esac
fi
if [ ! -e $SYSFS$DEVPATH/dev ] ; then
exit 1
fi
case "$DEVPATH" in
/devices/*)
cd "$SYSFS$DEVPATH/subsystem";
TYPE="`pwd -P`"
cd "$OPWD"
TYPE="${TYPE##*/}"
;;
/class/*)
TYPE="${DEVPATH#/class/}"
TYPE="${TYPE%%/*}"
;;
/block/*)
TYPE=block
;;
*)
exit 1
;;
esac
get_port_offset () {
local type offset port
type=$1
offset=$2
for i in $type[0-9]* ; do
: i $i
port="${i#$type}"
if [ "$port" -lt "$offset" ] ; then offset=$port ; fi
done
echo $offset
}
handle_pci () {
local DEV=$1
cd -P $1
DEV=${PWD}
pci_id=${DEV##*/}
host_dev_path=$DEV
# cciss devices don't have a separate sysfs node
for blk_link in block*; do
if [ -L "$blk_link" ]; then
case "$blk_link" in
*cciss*)
d=cciss-${blk_link#*cciss\!}
;;
esac
fi
done
while [ ! -z "$host_dev_path" ] ; do
case "$host_dev_path" in
*/pci[0-9]*)
host_dev_path=${host_dev_path%/*}
;;
*)
break
;;
esac
done
d="pci-$pci_id-$d"
D="$host_dev_path"
RESULT=0
}
handle_platform () {
local DEV=$1
cd -P $1
DEV=${PWD}
platform_id=${DEV##*/}
host_dev_path=$DEV
while [ ! -z "$host_dev_path" ] ; do
case "$host_dev_path" in
*/platform*)
host_dev_path=${host_dev_path%/*}
;;
*)
break
;;
esac
done
if [ "$d" ]; then
d="platform-$platform_id-$d"
else
d="platform-$platform_id"
fi
D="$host_dev_path"
RESULT=0
}
handle_serio () {
local DEV=$1
cd -P $1
DEV=${PWD}
serio_id=${DEV##*/serio}
host_dev_path=$DEV
while [ ! -z "$host_dev_path" ] ; do
case "$host_dev_path" in
*/serio*)
host_dev_path=${host_dev_path%/*}
;;
*)
break
;;
esac
done
if [ "$d" ]; then
d="serio-$serio_id-$d"
else
d="serio-$serio_id"
fi
D="$host_dev_path"
RESULT=0
}
handle_ide () {
: handle_ide $*
local DEV=$1
local port idedev idecontroller
# IDE
: DEV $DEV
port=${DEV##*/}
idedev=${DEV%/*}
idecontroller=${idedev%/*}
# port info if the controller has more than one interface
port="${port#ide}"
: port $port d $d
: idedev $idedev kernel_port $port
case "${port#*.}" in
0)
channel=0
;;
1)
channel=1
;;
*)
echo "Error: $idedev is neither master or slave" >&2
;;
esac
cd $idecontroller
offset="`get_port_offset ide ${port%.*}`"
cd "$OPWD"
: port offset $offset
port=$((${port%.*} - $offset))
if [ "$d" ] ; then
d="ide-${port}:$channel-$d"
else
d="ide-${port}:$channel"
fi
D=$idecontroller
RESULT=0
}
handle_scsi () {
: handle_scsi $*
local DEV=$1
local cil controller_port controller_dev
# SCSI device
cil="${DEV##*/}"
cil="${cil#*:}"
target_dev=${DEV%/*}
target_id=${target_dev##*/target}
cd "$target_dev"
target_num=0
for tid in ${target_id}* ; do
target_num=$(( $target_num + 1 ))
done
controller_port=${target_dev%/*}
controller_dev="${controller_port%/*}"
: controller_dev $controller_dev
: controller_port $controller_port
# a host controller may have more than one interface/port
controller_port="${controller_port##*/host}"
#
cd "$controller_dev"
controller_offset=$(get_port_offset host $controller_port)
cd "$OPWD"
controller_port=$(( $controller_port - $controller_offset))
scsi_id="scsi-${controller_port}:${cil}"
if [ "$d" ] ; then
d="${scsi_id}-$d"
else
d="$scsi_id"
fi
D="$controller_dev"
RESULT=0
}
handle_firewire () {
: handle_firewire $*
local DEV=$1
if [ -f "$D/ieee1394_id" ] ; then
read ieee1394_id < $D/ieee1394_id
fi
if [ -z "$ieee1394_id" ] ; then
: no IEEE1394 ID
RESULT=1
return
fi
fw_host_dev=${DEV%/fw-host*}
# IEEE1394 devices are always endpoints
d="ieee1394-0x$ieee1394_id"
D="$fw_host_dev"
RESULT=0
}
handle_fc () {
: handle_fc $*
local DEV=$1
local cil controller_port controller_dev
# SCSI-FC device
fc_tgt_hcil="${DEV##*/}"
fc_tgt_lun="${fc_tgt_hcil##*:}"
fc_tgt_path="${DEV%/*}"
fc_tgt_num="${fc_tgt_path##*/}"
fc_tgt_dev="${fc_tgt_path}/fc_transport:${fc_tgt_num}"
if [ -e "$fc_tgt_dev/port_name" ]; then
read wwpn < $fc_tgt_dev/port_name
fi
if [ -z "$wwpn" ] ; then
: no WWPN
D=
RESULT=1
return
fi
# Linux currently knows about 32bit luns
tmp_lun3=$(printf "%04x" $(($fc_tgt_lun & 0xFFFF)))
tmp_lun2=$(printf "%04x" $(( ($fc_tgt_lun >> 16) & 0xFFFF)))
tmp_lun1="0000"
tmp_lun0="0000"
if (($fc_tgt_lun == 0)) ; then
lun="0x0000000000000000"
else
lun="0x${tmp_lun3}${tmp_lun2}${tmp_lun1}${tmp_lun0}"
fi
controller_dev="${fc_tgt_path%/host[0-9]*}"
# FC devices are always endpoints
d="fc-${wwpn}:${lun}"
D="$controller_dev"
RESULT=0
}
handle_sas () {
: handle_sas $*
local DEV=$1
local cil adapter controller_dev
# SAS device
sas_host_path="${DEV%%/port*}"
sas_phy_path="${DEV#*/host*/}"
sas_phy_path="${sas_phy_path%%/target*}"
sas_phy_id="${sas_phy_path%%/*}"
sas_phy_id="${sas_phy_id##*port-}"
sas_port_id="${sas_phy_path%%/end_device*}"
sas_port_id="${sas_port_id##*port-}"
sas_end_id="${sas_phy_path##*end_device-}"
sas_phy_dev="/sys/class/sas_phy/phy-${sas_phy_id}"
if [ -e "$sas_phy_dev/sas_address" ]; then
read phy_address < $sas_phy_dev/sas_address
read phy_id < $sas_phy_dev/phy_identifier
fi
if [ -z "$phy_address" ] ; then
: no initiator address
D=
RESULT=1
return
fi
sas_port_dev="/sys/class/sas_port/port-${sas_port_id}"
if [ -e "$sas_port_dev/num_phys" ] ; then
read phy_port < $sas_port_dev/num_phys
fi
if [ -z "$phy_port" ] ; then
: no initiator address
D=
RESULT=1
return
fi
sas_phy_address="$phy_address:$phy_port:$phy_id"
sas_end_dev="/sys/class/sas_device/end_device-${sas_end_id}"
if [ -e "$sas_end_dev/sas_address" ]; then
read end_address < $sas_end_dev/sas_address
read end_id < $sas_end_dev/phy_identifier
fi
if [ -z "$end_address" ] ; then
: no initiator address
D=
RESULT=1
return
fi
sas_end_address="$end_address:$end_id"
controller_dev="${sas_host_path%/host[0-9]*}"
# SAS devices are always endpoints
d="sas-${sas_phy_address}-${sas_end_address}"
D="$controller_dev"
RESULT=0
}
handle_iscsi() {
local DEV=$1
local iscsi_session_dir
local iscsi_session iscsi_session_path
local iscsi_connection iscsi_connection_path
local iscsi_scsi_lun
# iSCSI device
iscsi_session_dir="${DEV%%/target*}"
iscsi_session="${iscsi_session_dir##*/}"
iscsi_session_path=/sys/class/iscsi_session/${iscsi_session}
if [ ! -d "$iscsi_session_path" ] ; then
: no iSCSI session path
RESULT=1
return
fi
# Currently we're not doing MC/S
for conn in ${iscsi_session_dir}/connection* ; do
iscsi_conn_num=${conn##*:}
if [ "$iscsi_conn_num" = '0' ] ; then
iscsi_connection=$(basename $conn)
fi
done
if [ -z "$iscsi_connection" ] ; then
: no iSCSI connection found
RESULT=1
return
fi
iscsi_connection_path=/sys/class/iscsi_connection/${iscsi_connection}
if [ ! -d "$iscsi_connection_path" ] ; then
: no iSCSI connection path
RESULT=1
return
fi
if [ -e "${iscsi_session_path}/targetname" ]; then
read iscsi_tgtname < ${iscsi_session_path}/targetname
fi
if [ -z "$iscsi_tgtname" ] ; then
: No iSCSI Targetname
RESULT=1
return
fi
if [ -e "${iscsi_connection_path}/persistent_address" ] ; then
read iscsi_address < ${iscsi_connection_path}/persistent_address
fi
if [ -z "$iscsi_address" ] ; then
: No iSCSI Target address
RESULT=1
return
fi
if [ -e "${iscsi_connection_path}/persistent_port" ] ; then
read iscsi_port < ${iscsi_connection_path}/persistent_port
fi
iscsi_scsi_lun="${DEV##*:}"
d="ip-${iscsi_address}:${iscsi_port}-iscsi-${iscsi_tgtname}-lun-${iscsi_scsi_lun}"
RESULT=0
}
handle_usb () {
: handle_usb $*
local DEV=$1
cd -P $1
DEV=${PWD}
port_id=${DEV##*/}
port_num=${port_id#*-}
host_dev_path=$DEV
while [ ! -z "$host_dev_path" ] ; do
case "$host_dev_path" in
*/usb*)
usb_host_path=$host_dev_path
host_dev_path="${host_dev_path%/*}"
;;
*)
break
;;
esac
done
: host_dev_path $host_dev_path
usb_host_num=${usb_host_path##*/usb}
cd "$host_dev_path"
usb_host_offset=$(get_port_offset usb $usb_host_num)
usb_host_port=$(($usb_host_num - $usb_host_offset))
cd "$OPWD"
if [ "$d" ] ; then
d="usb-$usb_host_port:$port_num-${d}"
else
d="usb-$usb_host_port:$port_num"
fi
D="$host_dev_path"
RESULT=0
}
handle_device () {
full_sysfs_path="$SYSFS$DEVPATH"
case "$DEVPATH" in
/devices/*)
# new sysfs layout
if [ -L $full_sysfs_path/subsystem ]; then
full_sysfs_path="${full_sysfs_path%/*}"
cd "$full_sysfs_path/subsystem";
subsys="`pwd -P`"
cd "$OPWD"
subsys="${subsys##*/}"
if [ "$subsys" = "block" ]; then
# parent is "block", it's a partition, move one up
full_sysfs_path="${full_sysfs_path%/*}"
fi
cd $full_sysfs_path
fi
;;
*)
# old sysfs layout
if [ ! -L $full_sysfs_path/device ] ; then
if [ -f $full_sysfs_path/range ] ; then return ; fi
full_sysfs_path="${full_sysfs_path%/*}"
: full_sysfs_path "$full_sysfs_path"
if [ ! -L $full_sysfs_path/device -o ! -f $full_sysfs_path/dev ] ; then
return
fi
fi
cd $full_sysfs_path/device
;;
esac
full_sysfs_device_path="`pwd -P`"
cd "$OPWD"
D=$full_sysfs_device_path
while [ ! -z "$D" ] ; do
case "$D" in
*/ide[0-9]/[0-9].[0-9]*|*/ide[0-9][0-9]/[0-9][0-9].[0-9]*)
handle_ide "$D"
;;
*/css0/*)
if [ -r $full_sysfs_device_path/wwpn ]; then
read wwpn < $full_sysfs_device_path/wwpn
fi
if [ -r $full_sysfs_device_path/fcp_lun ]; then
read lun < $full_sysfs_device_path/fcp_lun
fi
if [ -r $full_sysfs_device_path/hba_id ]; then
read bus_id < $full_sysfs_device_path/hba_id
fi
if [ "$bus_id" -a "$wwpn" -a "$lun" ]; then
# S/390 zfcp adapter
d="ccw-$bus_id-zfcp-$wwpn:$lun"
RESULT=0
else
# DASD devices
bus="ccw"
adapter=${D##*/}
d="$bus-$adapter"
RESULT=0
fi
D=
;;
*/rport-[0-9]*:[0-9]*-[0-9]*/*)
handle_fc "$D"
;;
*/end_device-[0-9]*:[0-9]*:[0-9]*/*)
handle_sas "$D"
;;
*/fw-host[0-9]*/*)
handle_firewire "$D"
;;
*/session[0-9]*/*)
handle_iscsi "$D"
D=
;;
*/host[0-9]*/[0-9]*:[0-9]*:[0-9]*:[0-9]*)
handle_scsi "$D"
;;
*/usb[0-9]*/[0-9]*/*)
handle_usb "$D"
;;
*/pci[0-9]*:[0-9]*)
handle_pci "$D"
;;
*/serio[0-9]*)
handle_serio "$D"
;;
*/platform/*)
handle_platform "$D"
;;
*/devices)
D=
;;
*)
: not handled
RESULT=1
return
;;
esac
done
if [ "$TYPE" = "scsi_tape" ] ; then
devname=${full_sysfs_path##*/}
rewind="${devname%%st*}"
mode="${devname##*st}"
case "$mode" in
*l)
mode="l"
;;
*m)
mode="m"
;;
*a)
mode="a"
;;
*)
mode=""
;;
esac
if [ "$d" ]; then
d="$d-${rewind}st${mode}"
fi
fi
}
case "$TYPE" in
block)
handle_device
echo "ID_PATH=$d"
;;
scsi_tape)
handle_device
echo "ID_PATH=$d"
;;
input)
handle_device
echo "ID_PATH=$d"
;;
*)
RESULT=1
;;
esac
exit $RESULT
|