1 sysfs interface
2 ---------------
3 The pktcdvd module (packet writing driver) cre
4 sysfs: (<devid> is in the format major:minor)
5
6 What: /sys/class/pktcdvd/add
7 What: /sys/class/pktcdvd/remove
8 What: /sys/class/pktcdvd/device_map
9 Date: Oct. 2006
10 KernelVersion: 2.6.20
11 Contact: Thomas Maier <balagi@justmail.d
12 Description:
13
14 ========== ==============
15 add (WO) Write a b
16 create a new p
17 block device.
18
19 remove (WO) Write the
20 to remove the
21
22 device_map (RO) Shows the
23 pktcdvd[0-7] <
24 ========== ==============
25
26
27 What: /sys/class/pktcdvd/pktcdvd[0-7
28 What: /sys/class/pktcdvd/pktcdvd[0-7
29 Date: Oct. 2006
30 KernelVersion: 2.6.20
31 Contact: Thomas Maier <balagi@justmail.d
32 Description:
33 dev: (RO) Device id
34
35 uevent: (WO) To send a uevent
36
37
38 What: /sys/class/pktcdvd/pktcdvd[0-7
39 What: /sys/class/pktcdvd/pktcdvd[0-7
40 What: /sys/class/pktcdvd/pktcdvd[0-7
41 What: /sys/class/pktcdvd/pktcdvd[0-7
42 What: /sys/class/pktcdvd/pktcdvd[0-7
43 What: /sys/class/pktcdvd/pktcdvd[0-7
44 Date: Oct. 2006
45 KernelVersion: 2.6.20
46 Contact: Thomas Maier <balagi@justmail.d
47 Description:
48 packets_started: (RO) N
49
50 packets_finished: (RO) N
51
52 kb_written: (RO) k
53
54 kb_read: (RO) k
55
56 kb_read_gather: (RO) k
57
58 reset: (WO) W
59 pktcdv
60 bytes
61
62
63 What: /sys/class/pktcdvd/pktcdvd[0-7
64 What: /sys/class/pktcdvd/pktcdvd[0-7
65 What: /sys/class/pktcdvd/pktcdvd[0-7
66 Date: Oct. 2006
67 KernelVersion: 2.6.20
68 Contact: Thomas Maier <balagi@justmail.d
69 Description:
70 ============== ==============
71 size (RO) Contains
72
73 congestion_off (RW) If bio wr
74 accept new bio
75
76 congestion_on (RW) If bio wr
77 mark, do no lo
78 from the block
79 device has pro
80 write queue si
81 A value of <=
82 ============== ==============
83
84
85 Example:
86 --------
87 To use the pktcdvd sysfs interface directly, y
88
89 # create a new pktcdvd device mapped to /d
90 echo "22:0" >/sys/class/pktcdvd/add
91 cat /sys/class/pktcdvd/device_map
92 # assuming device pktcdvd0 was created, lo
93 cat /sys/class/pktcdvd/pktcdvd0/stat/kb_wr
94 # print the device id of the mapped block
95 fgrep pktcdvd0 /sys/class/pktcdvd/device_m
96 # remove device, using pktcdvd0 device id
97 echo "253:0" >/sys/class/pktcdvd/remove
Linux® is a registered trademark of Linus Torvalds in the United States and other countries.
TOMOYO® is a registered trademark of NTT DATA CORPORATION.