devices.txt 112 KB

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  1. LINUX ALLOCATED DEVICES (2.6+ version)
  2. Maintained by Torben Mathiasen <device@lanana.org>
  3. Last revised: 25 January 2005
  4. This list is the Linux Device List, the official registry of allocated
  5. device numbers and /dev directory nodes for the Linux operating
  6. system.
  7. The latest version of this list is available from
  8. http://www.lanana.org/docs/device-list/ or
  9. ftp://ftp.kernel.org/pub/linux/docs/device-list/. This version may be
  10. newer than the one distributed with the Linux kernel.
  11. The LaTeX version of this document is no longer maintained.
  12. This document is included by reference into the Filesystem Hierarchy
  13. Standard (FHS). The FHS is available from http://www.pathname.com/fhs/.
  14. Allocations marked (68k/Amiga) apply to Linux/68k on the Amiga
  15. platform only. Allocations marked (68k/Atari) apply to Linux/68k on
  16. the Atari platform only.
  17. The symbol {2.6} means the allocation is obsolete and scheduled for
  18. removal once kernel version 2.6 (or equivalent) is released. Some of these
  19. allocations have already been removed.
  20. This document is in the public domain. The author requests, however,
  21. that semantically altered versions are not distributed without
  22. permission of the author, assuming the author can be contacted without
  23. an unreasonable effort.
  24. In particular, please don't sent patches for this list to Linus, at
  25. least not without contacting me first.
  26. I do not have any information about these devices beyond what appears
  27. on this list. Any such information requests will be deleted without
  28. reply.
  29. **** DEVICE DRIVERS AUTHORS PLEASE READ THIS ****
  30. To have a major number allocated, or a minor number in situations
  31. where that applies (e.g. busmice), please contact me with the
  32. appropriate device information. Also, if you have additional
  33. information regarding any of the devices listed below, or if I have
  34. made a mistake, I would greatly appreciate a note.
  35. I do, however, make a few requests about the nature of your report.
  36. This is necessary for me to be able to keep this list up to date and
  37. correct in a timely manner. First of all, *please* send it to the
  38. correct address... <device@lanana.org>. I receive hundreds of email
  39. messages a day, so mail sent to other addresses may very well get lost
  40. in the avalanche. Please put in a descriptive subject, so I can find
  41. your mail again should I need to. Too many people send me email
  42. saying just "device number request" in the subject.
  43. Second, please include a description of the device *in the same format
  44. as this list*. The reason for this is that it is the only way I have
  45. found to ensure I have all the requisite information to publish your
  46. device and avoid conflicts.
  47. Third, please don't assume that the distributed version of the list is
  48. up to date. Due to the number of registrations I have to maintain it
  49. in "batch mode", so there is likely additional registrations that
  50. haven't been listed yet.
  51. Finally, sometimes I have to play "namespace police." Please don't be
  52. offended. I often get submissions for /dev names that would be bound
  53. to cause conflicts down the road. I am trying to avoid getting in a
  54. situation where we would have to suffer an incompatible forward
  55. change. Therefore, please consult with me *before* you make your
  56. device names and numbers in any way public, at least to the point
  57. where it would be at all difficult to get them changed.
  58. Your cooperation is appreciated.
  59. 0 Unnamed devices (e.g. non-device mounts)
  60. 0 = reserved as null device number
  61. See block major 144, 145, 146 for expansion areas.
  62. 1 char Memory devices
  63. 1 = /dev/mem Physical memory access
  64. 2 = /dev/kmem Kernel virtual memory access
  65. 3 = /dev/null Null device
  66. 4 = /dev/port I/O port access
  67. 5 = /dev/zero Null byte source
  68. 6 = /dev/core OBSOLETE - replaced by /proc/kcore
  69. 7 = /dev/full Returns ENOSPC on write
  70. 8 = /dev/random Nondeterministic random number gen.
  71. 9 = /dev/urandom Faster, less secure random number gen.
  72. 10 = /dev/aio Asyncronous I/O notification interface
  73. 11 = /dev/kmsg Writes to this come out as printk's
  74. 12 = /dev/oldmem Access to crash dump from kexec kernel
  75. 1 block RAM disk
  76. 0 = /dev/ram0 First RAM disk
  77. 1 = /dev/ram1 Second RAM disk
  78. ...
  79. 250 = /dev/initrd Initial RAM disk {2.6}
  80. Older kernels had /dev/ramdisk (1, 1) here.
  81. /dev/initrd refers to a RAM disk which was preloaded
  82. by the boot loader; newer kernels use /dev/ram0 for
  83. the initrd.
  84. 2 char Pseudo-TTY masters
  85. 0 = /dev/ptyp0 First PTY master
  86. 1 = /dev/ptyp1 Second PTY master
  87. ...
  88. 255 = /dev/ptyef 256th PTY master
  89. Pseudo-tty's are named as follows:
  90. * Masters are "pty", slaves are "tty";
  91. * the fourth letter is one of pqrstuvwxyzabcde indicating
  92. the 1st through 16th series of 16 pseudo-ttys each, and
  93. * the fifth letter is one of 0123456789abcdef indicating
  94. the position within the series.
  95. These are the old-style (BSD) PTY devices; Unix98
  96. devices are on major 128 and above and use the PTY
  97. master multiplex (/dev/ptmx) to acquire a PTY on
  98. demand.
  99. 2 block Floppy disks
  100. 0 = /dev/fd0 Controller 0, drive 0, autodetect
  101. 1 = /dev/fd1 Controller 0, drive 1, autodetect
  102. 2 = /dev/fd2 Controller 0, drive 2, autodetect
  103. 3 = /dev/fd3 Controller 0, drive 3, autodetect
  104. 128 = /dev/fd4 Controller 1, drive 0, autodetect
  105. 129 = /dev/fd5 Controller 1, drive 1, autodetect
  106. 130 = /dev/fd6 Controller 1, drive 2, autodetect
  107. 131 = /dev/fd7 Controller 1, drive 3, autodetect
  108. To specify format, add to the autodetect device number:
  109. 0 = /dev/fd? Autodetect format
  110. 4 = /dev/fd?d360 5.25" 360K in a 360K drive(1)
  111. 20 = /dev/fd?h360 5.25" 360K in a 1200K drive(1)
  112. 48 = /dev/fd?h410 5.25" 410K in a 1200K drive
  113. 64 = /dev/fd?h420 5.25" 420K in a 1200K drive
  114. 24 = /dev/fd?h720 5.25" 720K in a 1200K drive
  115. 80 = /dev/fd?h880 5.25" 880K in a 1200K drive(1)
  116. 8 = /dev/fd?h1200 5.25" 1200K in a 1200K drive(1)
  117. 40 = /dev/fd?h1440 5.25" 1440K in a 1200K drive(1)
  118. 56 = /dev/fd?h1476 5.25" 1476K in a 1200K drive
  119. 72 = /dev/fd?h1494 5.25" 1494K in a 1200K drive
  120. 92 = /dev/fd?h1600 5.25" 1600K in a 1200K drive(1)
  121. 12 = /dev/fd?u360 3.5" 360K Double Density(2)
  122. 16 = /dev/fd?u720 3.5" 720K Double Density(1)
  123. 120 = /dev/fd?u800 3.5" 800K Double Density(2)
  124. 52 = /dev/fd?u820 3.5" 820K Double Density
  125. 68 = /dev/fd?u830 3.5" 830K Double Density
  126. 84 = /dev/fd?u1040 3.5" 1040K Double Density(1)
  127. 88 = /dev/fd?u1120 3.5" 1120K Double Density(1)
  128. 28 = /dev/fd?u1440 3.5" 1440K High Density(1)
  129. 124 = /dev/fd?u1600 3.5" 1600K High Density(1)
  130. 44 = /dev/fd?u1680 3.5" 1680K High Density(3)
  131. 60 = /dev/fd?u1722 3.5" 1722K High Density
  132. 76 = /dev/fd?u1743 3.5" 1743K High Density
  133. 96 = /dev/fd?u1760 3.5" 1760K High Density
  134. 116 = /dev/fd?u1840 3.5" 1840K High Density(3)
  135. 100 = /dev/fd?u1920 3.5" 1920K High Density(1)
  136. 32 = /dev/fd?u2880 3.5" 2880K Extra Density(1)
  137. 104 = /dev/fd?u3200 3.5" 3200K Extra Density
  138. 108 = /dev/fd?u3520 3.5" 3520K Extra Density
  139. 112 = /dev/fd?u3840 3.5" 3840K Extra Density(1)
  140. 36 = /dev/fd?CompaQ Compaq 2880K drive; obsolete?
  141. (1) Autodetectable format
  142. (2) Autodetectable format in a Double Density (720K) drive only
  143. (3) Autodetectable format in a High Density (1440K) drive only
  144. NOTE: The letter in the device name (d, q, h or u)
  145. signifies the type of drive: 5.25" Double Density (d),
  146. 5.25" Quad Density (q), 5.25" High Density (h) or 3.5"
  147. (any model, u). The use of the capital letters D, H
  148. and E for the 3.5" models have been deprecated, since
  149. the drive type is insignificant for these devices.
  150. 3 char Pseudo-TTY slaves
  151. 0 = /dev/ttyp0 First PTY slave
  152. 1 = /dev/ttyp1 Second PTY slave
  153. ...
  154. 255 = /dev/ttyef 256th PTY slave
  155. These are the old-style (BSD) PTY devices; Unix98
  156. devices are on major 136 and above.
  157. 3 block First MFM, RLL and IDE hard disk/CD-ROM interface
  158. 0 = /dev/hda Master: whole disk (or CD-ROM)
  159. 64 = /dev/hdb Slave: whole disk (or CD-ROM)
  160. For partitions, add to the whole disk device number:
  161. 0 = /dev/hd? Whole disk
  162. 1 = /dev/hd?1 First partition
  163. 2 = /dev/hd?2 Second partition
  164. ...
  165. 63 = /dev/hd?63 63rd partition
  166. For Linux/i386, partitions 1-4 are the primary
  167. partitions, and 5 and above are logical partitions.
  168. Other versions of Linux use partitioning schemes
  169. appropriate to their respective architectures.
  170. 4 char TTY devices
  171. 0 = /dev/tty0 Current virtual console
  172. 1 = /dev/tty1 First virtual console
  173. ...
  174. 63 = /dev/tty63 63rd virtual console
  175. 64 = /dev/ttyS0 First UART serial port
  176. ...
  177. 255 = /dev/ttyS191 192nd UART serial port
  178. UART serial ports refer to 8250/16450/16550 series devices.
  179. Older versions of the Linux kernel used this major
  180. number for BSD PTY devices. As of Linux 2.1.115, this
  181. is no longer supported. Use major numbers 2 and 3.
  182. 4 block Aliases for dynamically allocated major devices to be used
  183. when its not possible to create the real device nodes
  184. because the root filesystem is mounted read-only.
  185. 0 = /dev/root
  186. 5 char Alternate TTY devices
  187. 0 = /dev/tty Current TTY device
  188. 1 = /dev/console System console
  189. 2 = /dev/ptmx PTY master multiplex
  190. 64 = /dev/cua0 Callout device for ttyS0
  191. ...
  192. 255 = /dev/cua191 Callout device for ttyS191
  193. (5,1) is /dev/console starting with Linux 2.1.71. See
  194. the section on terminal devices for more information
  195. on /dev/console.
  196. 6 char Parallel printer devices
  197. 0 = /dev/lp0 Parallel printer on parport0
  198. 1 = /dev/lp1 Parallel printer on parport1
  199. ...
  200. Current Linux kernels no longer have a fixed mapping
  201. between parallel ports and I/O addresses. Instead,
  202. they are redirected through the parport multiplex layer.
  203. 7 char Virtual console capture devices
  204. 0 = /dev/vcs Current vc text contents
  205. 1 = /dev/vcs1 tty1 text contents
  206. ...
  207. 63 = /dev/vcs63 tty63 text contents
  208. 128 = /dev/vcsa Current vc text/attribute contents
  209. 129 = /dev/vcsa1 tty1 text/attribute contents
  210. ...
  211. 191 = /dev/vcsa63 tty63 text/attribute contents
  212. NOTE: These devices permit both read and write access.
  213. 7 block Loopback devices
  214. 0 = /dev/loop0 First loopback device
  215. 1 = /dev/loop1 Second loopback device
  216. ...
  217. The loopback devices are used to mount filesystems not
  218. associated with block devices. The binding to the
  219. loopback devices is handled by mount(8) or losetup(8).
  220. 8 block SCSI disk devices (0-15)
  221. 0 = /dev/sda First SCSI disk whole disk
  222. 16 = /dev/sdb Second SCSI disk whole disk
  223. 32 = /dev/sdc Third SCSI disk whole disk
  224. ...
  225. 240 = /dev/sdp Sixteenth SCSI disk whole disk
  226. Partitions are handled in the same way as for IDE
  227. disks (see major number 3) except that the limit on
  228. partitions is 15.
  229. 9 char SCSI tape devices
  230. 0 = /dev/st0 First SCSI tape, mode 0
  231. 1 = /dev/st1 Second SCSI tape, mode 0
  232. ...
  233. 32 = /dev/st0l First SCSI tape, mode 1
  234. 33 = /dev/st1l Second SCSI tape, mode 1
  235. ...
  236. 64 = /dev/st0m First SCSI tape, mode 2
  237. 65 = /dev/st1m Second SCSI tape, mode 2
  238. ...
  239. 96 = /dev/st0a First SCSI tape, mode 3
  240. 97 = /dev/st1a Second SCSI tape, mode 3
  241. ...
  242. 128 = /dev/nst0 First SCSI tape, mode 0, no rewind
  243. 129 = /dev/nst1 Second SCSI tape, mode 0, no rewind
  244. ...
  245. 160 = /dev/nst0l First SCSI tape, mode 1, no rewind
  246. 161 = /dev/nst1l Second SCSI tape, mode 1, no rewind
  247. ...
  248. 192 = /dev/nst0m First SCSI tape, mode 2, no rewind
  249. 193 = /dev/nst1m Second SCSI tape, mode 2, no rewind
  250. ...
  251. 224 = /dev/nst0a First SCSI tape, mode 3, no rewind
  252. 225 = /dev/nst1a Second SCSI tape, mode 3, no rewind
  253. ...
  254. "No rewind" refers to the omission of the default
  255. automatic rewind on device close. The MTREW or MTOFFL
  256. ioctl()'s can be used to rewind the tape regardless of
  257. the device used to access it.
  258. 9 block Metadisk (RAID) devices
  259. 0 = /dev/md0 First metadisk group
  260. 1 = /dev/md1 Second metadisk group
  261. ...
  262. The metadisk driver is used to span a
  263. filesystem across multiple physical disks.
  264. 10 char Non-serial mice, misc features
  265. 0 = /dev/logibm Logitech bus mouse
  266. 1 = /dev/psaux PS/2-style mouse port
  267. 2 = /dev/inportbm Microsoft Inport bus mouse
  268. 3 = /dev/atibm ATI XL bus mouse
  269. 4 = /dev/jbm J-mouse
  270. 4 = /dev/amigamouse Amiga mouse (68k/Amiga)
  271. 5 = /dev/atarimouse Atari mouse
  272. 6 = /dev/sunmouse Sun mouse
  273. 7 = /dev/amigamouse1 Second Amiga mouse
  274. 8 = /dev/smouse Simple serial mouse driver
  275. 9 = /dev/pc110pad IBM PC-110 digitizer pad
  276. 10 = /dev/adbmouse Apple Desktop Bus mouse
  277. 11 = /dev/vrtpanel Vr41xx embedded touch panel
  278. 13 = /dev/vpcmouse Connectix Virtual PC Mouse
  279. 14 = /dev/touchscreen/ucb1x00 UCB 1x00 touchscreen
  280. 15 = /dev/touchscreen/mk712 MK712 touchscreen
  281. 128 = /dev/beep Fancy beep device
  282. 129 = /dev/modreq Kernel module load request {2.6}
  283. 130 = /dev/watchdog Watchdog timer port
  284. 131 = /dev/temperature Machine internal temperature
  285. 132 = /dev/hwtrap Hardware fault trap
  286. 133 = /dev/exttrp External device trap
  287. 134 = /dev/apm_bios Advanced Power Management BIOS
  288. 135 = /dev/rtc Real Time Clock
  289. 139 = /dev/openprom SPARC OpenBoot PROM
  290. 140 = /dev/relay8 Berkshire Products Octal relay card
  291. 141 = /dev/relay16 Berkshire Products ISO-16 relay card
  292. 142 = /dev/msr x86 model-specific registers {2.6}
  293. 143 = /dev/pciconf PCI configuration space
  294. 144 = /dev/nvram Non-volatile configuration RAM
  295. 145 = /dev/hfmodem Soundcard shortwave modem control {2.6}
  296. 146 = /dev/graphics Linux/SGI graphics device
  297. 147 = /dev/opengl Linux/SGI OpenGL pipe
  298. 148 = /dev/gfx Linux/SGI graphics effects device
  299. 149 = /dev/input/mouse Linux/SGI Irix emulation mouse
  300. 150 = /dev/input/keyboard Linux/SGI Irix emulation keyboard
  301. 151 = /dev/led Front panel LEDs
  302. 152 = /dev/kpoll Kernel Poll Driver
  303. 153 = /dev/mergemem Memory merge device
  304. 154 = /dev/pmu Macintosh PowerBook power manager
  305. 155 = /dev/isictl MultiTech ISICom serial control
  306. 156 = /dev/lcd Front panel LCD display
  307. 157 = /dev/ac Applicom Intl Profibus card
  308. 158 = /dev/nwbutton Netwinder external button
  309. 159 = /dev/nwdebug Netwinder debug interface
  310. 160 = /dev/nwflash Netwinder flash memory
  311. 161 = /dev/userdma User-space DMA access
  312. 162 = /dev/smbus System Management Bus
  313. 163 = /dev/lik Logitech Internet Keyboard
  314. 164 = /dev/ipmo Intel Intelligent Platform Management
  315. 165 = /dev/vmmon VMWare virtual machine monitor
  316. 166 = /dev/i2o/ctl I2O configuration manager
  317. 167 = /dev/specialix_sxctl Specialix serial control
  318. 168 = /dev/tcldrv Technology Concepts serial control
  319. 169 = /dev/specialix_rioctl Specialix RIO serial control
  320. 170 = /dev/thinkpad/thinkpad IBM Thinkpad devices
  321. 171 = /dev/srripc QNX4 API IPC manager
  322. 172 = /dev/usemaclone Semaphore clone device
  323. 173 = /dev/ipmikcs Intelligent Platform Management
  324. 174 = /dev/uctrl SPARCbook 3 microcontroller
  325. 175 = /dev/agpgart AGP Graphics Address Remapping Table
  326. 176 = /dev/gtrsc Gorgy Timing radio clock
  327. 177 = /dev/cbm Serial CBM bus
  328. 178 = /dev/jsflash JavaStation OS flash SIMM
  329. 179 = /dev/xsvc High-speed shared-mem/semaphore service
  330. 180 = /dev/vrbuttons Vr41xx button input device
  331. 181 = /dev/toshiba Toshiba laptop SMM support
  332. 182 = /dev/perfctr Performance-monitoring counters
  333. 183 = /dev/hwrng Generic random number generator
  334. 184 = /dev/cpu/microcode CPU microcode update interface
  335. 186 = /dev/atomicps Atomic shapshot of process state data
  336. 187 = /dev/irnet IrNET device
  337. 188 = /dev/smbusbios SMBus BIOS
  338. 189 = /dev/ussp_ctl User space serial port control
  339. 190 = /dev/crash Mission Critical Linux crash dump facility
  340. 191 = /dev/pcl181 <information missing>
  341. 192 = /dev/nas_xbus NAS xbus LCD/buttons access
  342. 193 = /dev/d7s SPARC 7-segment display
  343. 194 = /dev/zkshim Zero-Knowledge network shim control
  344. 195 = /dev/elographics/e2201 Elographics touchscreen E271-2201
  345. 198 = /dev/sexec Signed executable interface
  346. 199 = /dev/scanners/cuecat :CueCat barcode scanner
  347. 200 = /dev/net/tun TAP/TUN network device
  348. 201 = /dev/button/gulpb Transmeta GULP-B buttons
  349. 202 = /dev/emd/ctl Enhanced Metadisk RAID (EMD) control
  350. 204 = /dev/video/em8300 EM8300 DVD decoder control
  351. 205 = /dev/video/em8300_mv EM8300 DVD decoder video
  352. 206 = /dev/video/em8300_ma EM8300 DVD decoder audio
  353. 207 = /dev/video/em8300_sp EM8300 DVD decoder subpicture
  354. 208 = /dev/compaq/cpqphpc Compaq PCI Hot Plug Controller
  355. 209 = /dev/compaq/cpqrid Compaq Remote Insight Driver
  356. 210 = /dev/impi/bt IMPI coprocessor block transfer
  357. 211 = /dev/impi/smic IMPI coprocessor stream interface
  358. 212 = /dev/watchdogs/0 First watchdog device
  359. 213 = /dev/watchdogs/1 Second watchdog device
  360. 214 = /dev/watchdogs/2 Third watchdog device
  361. 215 = /dev/watchdogs/3 Fourth watchdog device
  362. 216 = /dev/fujitsu/apanel Fujitsu/Siemens application panel
  363. 217 = /dev/ni/natmotn National Instruments Motion
  364. 218 = /dev/kchuid Inter-process chuid control
  365. 219 = /dev/modems/mwave MWave modem firmware upload
  366. 220 = /dev/mptctl Message passing technology (MPT) control
  367. 221 = /dev/mvista/hssdsi Montavista PICMG hot swap system driver
  368. 222 = /dev/mvista/hasi Montavista PICMG high availability
  369. 223 = /dev/input/uinput User level driver support for input
  370. 224 = /dev/tpm TCPA TPM driver
  371. 225 = /dev/pps Pulse Per Second driver
  372. 226 = /dev/systrace Systrace device
  373. 227 = /dev/mcelog X86_64 Machine Check Exception driver
  374. 228 = /dev/hpet HPET driver
  375. 229 = /dev/fuse Fuse (virtual filesystem in user-space)
  376. 230 = /dev/midishare MidiShare driver
  377. 240-254 Reserved for local use
  378. 255 Reserved for MISC_DYNAMIC_MINOR
  379. 11 char Raw keyboard device (Linux/SPARC only)
  380. 0 = /dev/kbd Raw keyboard device
  381. 11 char Serial Mux device (Linux/PA-RISC only)
  382. 0 = /dev/ttyB0 First mux port
  383. 1 = /dev/ttyB1 Second mux port
  384. ...
  385. 11 block SCSI CD-ROM devices
  386. 0 = /dev/scd0 First SCSI CD-ROM
  387. 1 = /dev/scd1 Second SCSI CD-ROM
  388. ...
  389. The prefix /dev/sr (instead of /dev/scd) has been deprecated.
  390. 12 char QIC-02 tape
  391. 2 = /dev/ntpqic11 QIC-11, no rewind-on-close
  392. 3 = /dev/tpqic11 QIC-11, rewind-on-close
  393. 4 = /dev/ntpqic24 QIC-24, no rewind-on-close
  394. 5 = /dev/tpqic24 QIC-24, rewind-on-close
  395. 6 = /dev/ntpqic120 QIC-120, no rewind-on-close
  396. 7 = /dev/tpqic120 QIC-120, rewind-on-close
  397. 8 = /dev/ntpqic150 QIC-150, no rewind-on-close
  398. 9 = /dev/tpqic150 QIC-150, rewind-on-close
  399. The device names specified are proposed -- if there
  400. are "standard" names for these devices, please let me know.
  401. 12 block MSCDEX CD-ROM callback support {2.6}
  402. 0 = /dev/dos_cd0 First MSCDEX CD-ROM
  403. 1 = /dev/dos_cd1 Second MSCDEX CD-ROM
  404. ...
  405. 13 char Input core
  406. 0 = /dev/input/js0 First joystick
  407. 1 = /dev/input/js1 Second joystick
  408. ...
  409. 32 = /dev/input/mouse0 First mouse
  410. 33 = /dev/input/mouse1 Second mouse
  411. ...
  412. 63 = /dev/input/mice Unified mouse
  413. 64 = /dev/input/event0 First event queue
  414. 65 = /dev/input/event1 Second event queue
  415. ...
  416. Each device type has 5 bits (32 minors).
  417. 13 block 8-bit MFM/RLL/IDE controller
  418. 0 = /dev/xda First XT disk whole disk
  419. 64 = /dev/xdb Second XT disk whole disk
  420. Partitions are handled in the same way as IDE disks
  421. (see major number 3).
  422. 14 char Open Sound System (OSS)
  423. 0 = /dev/mixer Mixer control
  424. 1 = /dev/sequencer Audio sequencer
  425. 2 = /dev/midi00 First MIDI port
  426. 3 = /dev/dsp Digital audio
  427. 4 = /dev/audio Sun-compatible digital audio
  428. 6 = /dev/sndstat Sound card status information {2.6}
  429. 7 = /dev/audioctl SPARC audio control device
  430. 8 = /dev/sequencer2 Sequencer -- alternate device
  431. 16 = /dev/mixer1 Second soundcard mixer control
  432. 17 = /dev/patmgr0 Sequencer patch manager
  433. 18 = /dev/midi01 Second MIDI port
  434. 19 = /dev/dsp1 Second soundcard digital audio
  435. 20 = /dev/audio1 Second soundcard Sun digital audio
  436. 33 = /dev/patmgr1 Sequencer patch manager
  437. 34 = /dev/midi02 Third MIDI port
  438. 50 = /dev/midi03 Fourth MIDI port
  439. 14 block BIOS harddrive callback support {2.6}
  440. 0 = /dev/dos_hda First BIOS harddrive whole disk
  441. 64 = /dev/dos_hdb Second BIOS harddrive whole disk
  442. 128 = /dev/dos_hdc Third BIOS harddrive whole disk
  443. 192 = /dev/dos_hdd Fourth BIOS harddrive whole disk
  444. Partitions are handled in the same way as IDE disks
  445. (see major number 3).
  446. 15 char Joystick
  447. 0 = /dev/js0 First analog joystick
  448. 1 = /dev/js1 Second analog joystick
  449. ...
  450. 128 = /dev/djs0 First digital joystick
  451. 129 = /dev/djs1 Second digital joystick
  452. ...
  453. 15 block Sony CDU-31A/CDU-33A CD-ROM
  454. 0 = /dev/sonycd Sony CDU-31a CD-ROM
  455. 16 char Non-SCSI scanners
  456. 0 = /dev/gs4500 Genius 4500 handheld scanner
  457. 16 block GoldStar CD-ROM
  458. 0 = /dev/gscd GoldStar CD-ROM
  459. 17 char Chase serial card
  460. 0 = /dev/ttyH0 First Chase port
  461. 1 = /dev/ttyH1 Second Chase port
  462. ...
  463. 17 block Optics Storage CD-ROM
  464. 0 = /dev/optcd Optics Storage CD-ROM
  465. 18 char Chase serial card - alternate devices
  466. 0 = /dev/cuh0 Callout device for ttyH0
  467. 1 = /dev/cuh1 Callout device for ttyH1
  468. ...
  469. 18 block Sanyo CD-ROM
  470. 0 = /dev/sjcd Sanyo CD-ROM
  471. 19 char Cyclades serial card
  472. 0 = /dev/ttyC0 First Cyclades port
  473. ...
  474. 31 = /dev/ttyC31 32nd Cyclades port
  475. 19 block "Double" compressed disk
  476. 0 = /dev/double0 First compressed disk
  477. ...
  478. 7 = /dev/double7 Eighth compressed disk
  479. 128 = /dev/cdouble0 Mirror of first compressed disk
  480. ...
  481. 135 = /dev/cdouble7 Mirror of eighth compressed disk
  482. See the Double documentation for the meaning of the
  483. mirror devices.
  484. 20 char Cyclades serial card - alternate devices
  485. 0 = /dev/cub0 Callout device for ttyC0
  486. ...
  487. 31 = /dev/cub31 Callout device for ttyC31
  488. 20 block Hitachi CD-ROM (under development)
  489. 0 = /dev/hitcd Hitachi CD-ROM
  490. 21 char Generic SCSI access
  491. 0 = /dev/sg0 First generic SCSI device
  492. 1 = /dev/sg1 Second generic SCSI device
  493. ...
  494. Most distributions name these /dev/sga, /dev/sgb...;
  495. this sets an unnecessary limit of 26 SCSI devices in
  496. the system and is counter to standard Linux
  497. device-naming practice.
  498. 21 block Acorn MFM hard drive interface
  499. 0 = /dev/mfma First MFM drive whole disk
  500. 64 = /dev/mfmb Second MFM drive whole disk
  501. This device is used on the ARM-based Acorn RiscPC.
  502. Partitions are handled the same way as for IDE disks
  503. (see major number 3).
  504. 22 char Digiboard serial card
  505. 0 = /dev/ttyD0 First Digiboard port
  506. 1 = /dev/ttyD1 Second Digiboard port
  507. ...
  508. 22 block Second IDE hard disk/CD-ROM interface
  509. 0 = /dev/hdc Master: whole disk (or CD-ROM)
  510. 64 = /dev/hdd Slave: whole disk (or CD-ROM)
  511. Partitions are handled the same way as for the first
  512. interface (see major number 3).
  513. 23 char Digiboard serial card - alternate devices
  514. 0 = /dev/cud0 Callout device for ttyD0
  515. 1 = /dev/cud1 Callout device for ttyD1
  516. ...
  517. 23 block Mitsumi proprietary CD-ROM
  518. 0 = /dev/mcd Mitsumi CD-ROM
  519. 24 char Stallion serial card
  520. 0 = /dev/ttyE0 Stallion port 0 card 0
  521. 1 = /dev/ttyE1 Stallion port 1 card 0
  522. ...
  523. 64 = /dev/ttyE64 Stallion port 0 card 1
  524. 65 = /dev/ttyE65 Stallion port 1 card 1
  525. ...
  526. 128 = /dev/ttyE128 Stallion port 0 card 2
  527. 129 = /dev/ttyE129 Stallion port 1 card 2
  528. ...
  529. 192 = /dev/ttyE192 Stallion port 0 card 3
  530. 193 = /dev/ttyE193 Stallion port 1 card 3
  531. ...
  532. 24 block Sony CDU-535 CD-ROM
  533. 0 = /dev/cdu535 Sony CDU-535 CD-ROM
  534. 25 char Stallion serial card - alternate devices
  535. 0 = /dev/cue0 Callout device for ttyE0
  536. 1 = /dev/cue1 Callout device for ttyE1
  537. ...
  538. 64 = /dev/cue64 Callout device for ttyE64
  539. 65 = /dev/cue65 Callout device for ttyE65
  540. ...
  541. 128 = /dev/cue128 Callout device for ttyE128
  542. 129 = /dev/cue129 Callout device for ttyE129
  543. ...
  544. 192 = /dev/cue192 Callout device for ttyE192
  545. 193 = /dev/cue193 Callout device for ttyE193
  546. ...
  547. 25 block First Matsushita (Panasonic/SoundBlaster) CD-ROM
  548. 0 = /dev/sbpcd0 Panasonic CD-ROM controller 0 unit 0
  549. 1 = /dev/sbpcd1 Panasonic CD-ROM controller 0 unit 1
  550. 2 = /dev/sbpcd2 Panasonic CD-ROM controller 0 unit 2
  551. 3 = /dev/sbpcd3 Panasonic CD-ROM controller 0 unit 3
  552. 26 char Quanta WinVision frame grabber {2.6}
  553. 0 = /dev/wvisfgrab Quanta WinVision frame grabber
  554. 26 block Second Matsushita (Panasonic/SoundBlaster) CD-ROM
  555. 0 = /dev/sbpcd4 Panasonic CD-ROM controller 1 unit 0
  556. 1 = /dev/sbpcd5 Panasonic CD-ROM controller 1 unit 1
  557. 2 = /dev/sbpcd6 Panasonic CD-ROM controller 1 unit 2
  558. 3 = /dev/sbpcd7 Panasonic CD-ROM controller 1 unit 3
  559. 27 char QIC-117 tape
  560. 0 = /dev/qft0 Unit 0, rewind-on-close
  561. 1 = /dev/qft1 Unit 1, rewind-on-close
  562. 2 = /dev/qft2 Unit 2, rewind-on-close
  563. 3 = /dev/qft3 Unit 3, rewind-on-close
  564. 4 = /dev/nqft0 Unit 0, no rewind-on-close
  565. 5 = /dev/nqft1 Unit 1, no rewind-on-close
  566. 6 = /dev/nqft2 Unit 2, no rewind-on-close
  567. 7 = /dev/nqft3 Unit 3, no rewind-on-close
  568. 16 = /dev/zqft0 Unit 0, rewind-on-close, compression
  569. 17 = /dev/zqft1 Unit 1, rewind-on-close, compression
  570. 18 = /dev/zqft2 Unit 2, rewind-on-close, compression
  571. 19 = /dev/zqft3 Unit 3, rewind-on-close, compression
  572. 20 = /dev/nzqft0 Unit 0, no rewind-on-close, compression
  573. 21 = /dev/nzqft1 Unit 1, no rewind-on-close, compression
  574. 22 = /dev/nzqft2 Unit 2, no rewind-on-close, compression
  575. 23 = /dev/nzqft3 Unit 3, no rewind-on-close, compression
  576. 32 = /dev/rawqft0 Unit 0, rewind-on-close, no file marks
  577. 33 = /dev/rawqft1 Unit 1, rewind-on-close, no file marks
  578. 34 = /dev/rawqft2 Unit 2, rewind-on-close, no file marks
  579. 35 = /dev/rawqft3 Unit 3, rewind-on-close, no file marks
  580. 36 = /dev/nrawqft0 Unit 0, no rewind-on-close, no file marks
  581. 37 = /dev/nrawqft1 Unit 1, no rewind-on-close, no file marks
  582. 38 = /dev/nrawqft2 Unit 2, no rewind-on-close, no file marks
  583. 39 = /dev/nrawqft3 Unit 3, no rewind-on-close, no file marks
  584. 27 block Third Matsushita (Panasonic/SoundBlaster) CD-ROM
  585. 0 = /dev/sbpcd8 Panasonic CD-ROM controller 2 unit 0
  586. 1 = /dev/sbpcd9 Panasonic CD-ROM controller 2 unit 1
  587. 2 = /dev/sbpcd10 Panasonic CD-ROM controller 2 unit 2
  588. 3 = /dev/sbpcd11 Panasonic CD-ROM controller 2 unit 3
  589. 28 char Stallion serial card - card programming
  590. 0 = /dev/staliomem0 First Stallion card I/O memory
  591. 1 = /dev/staliomem1 Second Stallion card I/O memory
  592. 2 = /dev/staliomem2 Third Stallion card I/O memory
  593. 3 = /dev/staliomem3 Fourth Stallion card I/O memory
  594. 28 char Atari SLM ACSI laser printer (68k/Atari)
  595. 0 = /dev/slm0 First SLM laser printer
  596. 1 = /dev/slm1 Second SLM laser printer
  597. ...
  598. 28 block Fourth Matsushita (Panasonic/SoundBlaster) CD-ROM
  599. 0 = /dev/sbpcd12 Panasonic CD-ROM controller 3 unit 0
  600. 1 = /dev/sbpcd13 Panasonic CD-ROM controller 3 unit 1
  601. 2 = /dev/sbpcd14 Panasonic CD-ROM controller 3 unit 2
  602. 3 = /dev/sbpcd15 Panasonic CD-ROM controller 3 unit 3
  603. 28 block ACSI disk (68k/Atari)
  604. 0 = /dev/ada First ACSI disk whole disk
  605. 16 = /dev/adb Second ACSI disk whole disk
  606. 32 = /dev/adc Third ACSI disk whole disk
  607. ...
  608. 240 = /dev/adp 16th ACSI disk whole disk
  609. Partitions are handled in the same way as for IDE
  610. disks (see major number 3) except that the limit on
  611. partitions is 15, like SCSI.
  612. 29 char Universal frame buffer
  613. 0 = /dev/fb0 First frame buffer
  614. 1 = /dev/fb1 Second frame buffer
  615. ...
  616. 31 = /dev/fb31 32nd frame buffer
  617. 29 block Aztech/Orchid/Okano/Wearnes CD-ROM
  618. 0 = /dev/aztcd Aztech CD-ROM
  619. 30 char iBCS-2 compatibility devices
  620. 0 = /dev/socksys Socket access
  621. 1 = /dev/spx SVR3 local X interface
  622. 32 = /dev/inet/ip Network access
  623. 33 = /dev/inet/icmp
  624. 34 = /dev/inet/ggp
  625. 35 = /dev/inet/ipip
  626. 36 = /dev/inet/tcp
  627. 37 = /dev/inet/egp
  628. 38 = /dev/inet/pup
  629. 39 = /dev/inet/udp
  630. 40 = /dev/inet/idp
  631. 41 = /dev/inet/rawip
  632. Additionally, iBCS-2 requires the following links:
  633. /dev/ip -> /dev/inet/ip
  634. /dev/icmp -> /dev/inet/icmp
  635. /dev/ggp -> /dev/inet/ggp
  636. /dev/ipip -> /dev/inet/ipip
  637. /dev/tcp -> /dev/inet/tcp
  638. /dev/egp -> /dev/inet/egp
  639. /dev/pup -> /dev/inet/pup
  640. /dev/udp -> /dev/inet/udp
  641. /dev/idp -> /dev/inet/idp
  642. /dev/rawip -> /dev/inet/rawip
  643. /dev/inet/arp -> /dev/inet/udp
  644. /dev/inet/rip -> /dev/inet/udp
  645. /dev/nfsd -> /dev/socksys
  646. /dev/X0R -> /dev/null (? apparently not required ?)
  647. 30 block Philips LMS CM-205 CD-ROM
  648. 0 = /dev/cm205cd Philips LMS CM-205 CD-ROM
  649. /dev/lmscd is an older name for this device. This
  650. driver does not work with the CM-205MS CD-ROM.
  651. 31 char MPU-401 MIDI
  652. 0 = /dev/mpu401data MPU-401 data port
  653. 1 = /dev/mpu401stat MPU-401 status port
  654. 31 block ROM/flash memory card
  655. 0 = /dev/rom0 First ROM card (rw)
  656. ...
  657. 7 = /dev/rom7 Eighth ROM card (rw)
  658. 8 = /dev/rrom0 First ROM card (ro)
  659. ...
  660. 15 = /dev/rrom7 Eighth ROM card (ro)
  661. 16 = /dev/flash0 First flash memory card (rw)
  662. ...
  663. 23 = /dev/flash7 Eighth flash memory card (rw)
  664. 24 = /dev/rflash0 First flash memory card (ro)
  665. ...
  666. 31 = /dev/rflash7 Eighth flash memory card (ro)
  667. The read-write (rw) devices support back-caching
  668. written data in RAM, as well as writing to flash RAM
  669. devices. The read-only devices (ro) support reading
  670. only.
  671. 32 char Specialix serial card
  672. 0 = /dev/ttyX0 First Specialix port
  673. 1 = /dev/ttyX1 Second Specialix port
  674. ...
  675. 32 block Philips LMS CM-206 CD-ROM
  676. 0 = /dev/cm206cd Philips LMS CM-206 CD-ROM
  677. 33 char Specialix serial card - alternate devices
  678. 0 = /dev/cux0 Callout device for ttyX0
  679. 1 = /dev/cux1 Callout device for ttyX1
  680. ...
  681. 33 block Third IDE hard disk/CD-ROM interface
  682. 0 = /dev/hde Master: whole disk (or CD-ROM)
  683. 64 = /dev/hdf Slave: whole disk (or CD-ROM)
  684. Partitions are handled the same way as for the first
  685. interface (see major number 3).
  686. 34 char Z8530 HDLC driver
  687. 0 = /dev/scc0 First Z8530, first port
  688. 1 = /dev/scc1 First Z8530, second port
  689. 2 = /dev/scc2 Second Z8530, first port
  690. 3 = /dev/scc3 Second Z8530, second port
  691. ...
  692. In a previous version these devices were named
  693. /dev/sc1 for /dev/scc0, /dev/sc2 for /dev/scc1, and so
  694. on.
  695. 34 block Fourth IDE hard disk/CD-ROM interface
  696. 0 = /dev/hdg Master: whole disk (or CD-ROM)
  697. 64 = /dev/hdh Slave: whole disk (or CD-ROM)
  698. Partitions are handled the same way as for the first
  699. interface (see major number 3).
  700. 35 char tclmidi MIDI driver
  701. 0 = /dev/midi0 First MIDI port, kernel timed
  702. 1 = /dev/midi1 Second MIDI port, kernel timed
  703. 2 = /dev/midi2 Third MIDI port, kernel timed
  704. 3 = /dev/midi3 Fourth MIDI port, kernel timed
  705. 64 = /dev/rmidi0 First MIDI port, untimed
  706. 65 = /dev/rmidi1 Second MIDI port, untimed
  707. 66 = /dev/rmidi2 Third MIDI port, untimed
  708. 67 = /dev/rmidi3 Fourth MIDI port, untimed
  709. 128 = /dev/smpte0 First MIDI port, SMPTE timed
  710. 129 = /dev/smpte1 Second MIDI port, SMPTE timed
  711. 130 = /dev/smpte2 Third MIDI port, SMPTE timed
  712. 131 = /dev/smpte3 Fourth MIDI port, SMPTE timed
  713. 35 block Slow memory ramdisk
  714. 0 = /dev/slram Slow memory ramdisk
  715. 36 char Netlink support
  716. 0 = /dev/route Routing, device updates, kernel to user
  717. 1 = /dev/skip enSKIP security cache control
  718. 3 = /dev/fwmonitor Firewall packet copies
  719. 16 = /dev/tap0 First Ethertap device
  720. ...
  721. 31 = /dev/tap15 16th Ethertap device
  722. 36 block MCA ESDI hard disk
  723. 0 = /dev/eda First ESDI disk whole disk
  724. 64 = /dev/edb Second ESDI disk whole disk
  725. ...
  726. Partitions are handled in the same way as IDE disks
  727. (see major number 3).
  728. 37 char IDE tape
  729. 0 = /dev/ht0 First IDE tape
  730. 1 = /dev/ht1 Second IDE tape
  731. ...
  732. 128 = /dev/nht0 First IDE tape, no rewind-on-close
  733. 129 = /dev/nht1 Second IDE tape, no rewind-on-close
  734. ...
  735. Currently, only one IDE tape drive is supported.
  736. 37 block Zorro II ramdisk
  737. 0 = /dev/z2ram Zorro II ramdisk
  738. 38 char Myricom PCI Myrinet board
  739. 0 = /dev/mlanai0 First Myrinet board
  740. 1 = /dev/mlanai1 Second Myrinet board
  741. ...
  742. This device is used for status query, board control
  743. and "user level packet I/O." This board is also
  744. accessible as a standard networking "eth" device.
  745. 38 block Reserved for Linux/AP+
  746. 39 char ML-16P experimental I/O board
  747. 0 = /dev/ml16pa-a0 First card, first analog channel
  748. 1 = /dev/ml16pa-a1 First card, second analog channel
  749. ...
  750. 15 = /dev/ml16pa-a15 First card, 16th analog channel
  751. 16 = /dev/ml16pa-d First card, digital lines
  752. 17 = /dev/ml16pa-c0 First card, first counter/timer
  753. 18 = /dev/ml16pa-c1 First card, second counter/timer
  754. 19 = /dev/ml16pa-c2 First card, third counter/timer
  755. 32 = /dev/ml16pb-a0 Second card, first analog channel
  756. 33 = /dev/ml16pb-a1 Second card, second analog channel
  757. ...
  758. 47 = /dev/ml16pb-a15 Second card, 16th analog channel
  759. 48 = /dev/ml16pb-d Second card, digital lines
  760. 49 = /dev/ml16pb-c0 Second card, first counter/timer
  761. 50 = /dev/ml16pb-c1 Second card, second counter/timer
  762. 51 = /dev/ml16pb-c2 Second card, third counter/timer
  763. ...
  764. 39 block Reserved for Linux/AP+
  765. 40 char Matrox Meteor frame grabber {2.6}
  766. 0 = /dev/mmetfgrab Matrox Meteor frame grabber
  767. 40 block Syquest EZ135 parallel port removable drive
  768. 0 = /dev/eza Parallel EZ135 drive, whole disk
  769. This device is obsolete and will be removed in a
  770. future version of Linux. It has been replaced with
  771. the parallel port IDE disk driver at major number 45.
  772. Partitions are handled in the same way as IDE disks
  773. (see major number 3).
  774. 41 char Yet Another Micro Monitor
  775. 0 = /dev/yamm Yet Another Micro Monitor
  776. 41 block MicroSolutions BackPack parallel port CD-ROM
  777. 0 = /dev/bpcd BackPack CD-ROM
  778. This device is obsolete and will be removed in a
  779. future version of Linux. It has been replaced with
  780. the parallel port ATAPI CD-ROM driver at major number 46.
  781. 42 char Demo/sample use
  782. 42 block Demo/sample use
  783. This number is intended for use in sample code, as
  784. well as a general "example" device number. It
  785. should never be used for a device driver that is being
  786. distributed; either obtain an official number or use
  787. the local/experimental range. The sudden addition or
  788. removal of a driver with this number should not cause
  789. ill effects to the system (bugs excepted.)
  790. IN PARTICULAR, ANY DISTRIBUTION WHICH CONTAINS A
  791. DEVICE DRIVER USING MAJOR NUMBER 42 IS NONCOMPLIANT.
  792. 43 char isdn4linux virtual modem
  793. 0 = /dev/ttyI0 First virtual modem
  794. ...
  795. 63 = /dev/ttyI63 64th virtual modem
  796. 43 block Network block devices
  797. 0 = /dev/nb0 First network block device
  798. 1 = /dev/nb1 Second network block device
  799. ...
  800. Network Block Device is somehow similar to loopback
  801. devices: If you read from it, it sends packet across
  802. network asking server for data. If you write to it, it
  803. sends packet telling server to write. It could be used
  804. to mounting filesystems over the net, swapping over
  805. the net, implementing block device in userland etc.
  806. 44 char isdn4linux virtual modem - alternate devices
  807. 0 = /dev/cui0 Callout device for ttyI0
  808. ...
  809. 63 = /dev/cui63 Callout device for ttyI63
  810. 44 block Flash Translation Layer (FTL) filesystems
  811. 0 = /dev/ftla FTL on first Memory Technology Device
  812. 16 = /dev/ftlb FTL on second Memory Technology Device
  813. 32 = /dev/ftlc FTL on third Memory Technology Device
  814. ...
  815. 240 = /dev/ftlp FTL on 16th Memory Technology Device
  816. Partitions are handled in the same way as for IDE
  817. disks (see major number 3) expect that the partition
  818. limit is 15 rather than 63 per disk (same as SCSI.)
  819. 45 char isdn4linux ISDN BRI driver
  820. 0 = /dev/isdn0 First virtual B channel raw data
  821. ...
  822. 63 = /dev/isdn63 64th virtual B channel raw data
  823. 64 = /dev/isdnctrl0 First channel control/debug
  824. ...
  825. 127 = /dev/isdnctrl63 64th channel control/debug
  826. 128 = /dev/ippp0 First SyncPPP device
  827. ...
  828. 191 = /dev/ippp63 64th SyncPPP device
  829. 255 = /dev/isdninfo ISDN monitor interface
  830. 45 block Parallel port IDE disk devices
  831. 0 = /dev/pda First parallel port IDE disk
  832. 16 = /dev/pdb Second parallel port IDE disk
  833. 32 = /dev/pdc Third parallel port IDE disk
  834. 48 = /dev/pdd Fourth parallel port IDE disk
  835. Partitions are handled in the same way as for IDE
  836. disks (see major number 3) except that the partition
  837. limit is 15 rather than 63 per disk.
  838. 46 char Comtrol Rocketport serial card
  839. 0 = /dev/ttyR0 First Rocketport port
  840. 1 = /dev/ttyR1 Second Rocketport port
  841. ...
  842. 46 block Parallel port ATAPI CD-ROM devices
  843. 0 = /dev/pcd0 First parallel port ATAPI CD-ROM
  844. 1 = /dev/pcd1 Second parallel port ATAPI CD-ROM
  845. 2 = /dev/pcd2 Third parallel port ATAPI CD-ROM
  846. 3 = /dev/pcd3 Fourth parallel port ATAPI CD-ROM
  847. 47 char Comtrol Rocketport serial card - alternate devices
  848. 0 = /dev/cur0 Callout device for ttyR0
  849. 1 = /dev/cur1 Callout device for ttyR1
  850. ...
  851. 47 block Parallel port ATAPI disk devices
  852. 0 = /dev/pf0 First parallel port ATAPI disk
  853. 1 = /dev/pf1 Second parallel port ATAPI disk
  854. 2 = /dev/pf2 Third parallel port ATAPI disk
  855. 3 = /dev/pf3 Fourth parallel port ATAPI disk
  856. This driver is intended for floppy disks and similar
  857. devices and hence does not support partitioning.
  858. 48 char SDL RISCom serial card
  859. 0 = /dev/ttyL0 First RISCom port
  860. 1 = /dev/ttyL1 Second RISCom port
  861. ...
  862. 48 block Mylex DAC960 PCI RAID controller; first controller
  863. 0 = /dev/rd/c0d0 First disk, whole disk
  864. 8 = /dev/rd/c0d1 Second disk, whole disk
  865. ...
  866. 248 = /dev/rd/c0d31 32nd disk, whole disk
  867. For partitions add:
  868. 0 = /dev/rd/c?d? Whole disk
  869. 1 = /dev/rd/c?d?p1 First partition
  870. ...
  871. 7 = /dev/rd/c?d?p7 Seventh partition
  872. 49 char SDL RISCom serial card - alternate devices
  873. 0 = /dev/cul0 Callout device for ttyL0
  874. 1 = /dev/cul1 Callout device for ttyL1
  875. ...
  876. 49 block Mylex DAC960 PCI RAID controller; second controller
  877. 0 = /dev/rd/c1d0 First disk, whole disk
  878. 8 = /dev/rd/c1d1 Second disk, whole disk
  879. ...
  880. 248 = /dev/rd/c1d31 32nd disk, whole disk
  881. Partitions are handled as for major 48.
  882. 50 char Reserved for GLINT
  883. 50 block Mylex DAC960 PCI RAID controller; third controller
  884. 0 = /dev/rd/c2d0 First disk, whole disk
  885. 8 = /dev/rd/c2d1 Second disk, whole disk
  886. ...
  887. 248 = /dev/rd/c2d31 32nd disk, whole disk
  888. 51 char Baycom radio modem OR Radio Tech BIM-XXX-RS232 radio modem
  889. 0 = /dev/bc0 First Baycom radio modem
  890. 1 = /dev/bc1 Second Baycom radio modem
  891. ...
  892. 51 block Mylex DAC960 PCI RAID controller; fourth controller
  893. 0 = /dev/rd/c3d0 First disk, whole disk
  894. 8 = /dev/rd/c3d1 Second disk, whole disk
  895. ...
  896. 248 = /dev/rd/c3d31 32nd disk, whole disk
  897. Partitions are handled as for major 48.
  898. 52 char Spellcaster DataComm/BRI ISDN card
  899. 0 = /dev/dcbri0 First DataComm card
  900. 1 = /dev/dcbri1 Second DataComm card
  901. 2 = /dev/dcbri2 Third DataComm card
  902. 3 = /dev/dcbri3 Fourth DataComm card
  903. 52 block Mylex DAC960 PCI RAID controller; fifth controller
  904. 0 = /dev/rd/c4d0 First disk, whole disk
  905. 8 = /dev/rd/c4d1 Second disk, whole disk
  906. ...
  907. 248 = /dev/rd/c4d31 32nd disk, whole disk
  908. Partitions are handled as for major 48.
  909. 53 char BDM interface for remote debugging MC683xx microcontrollers
  910. 0 = /dev/pd_bdm0 PD BDM interface on lp0
  911. 1 = /dev/pd_bdm1 PD BDM interface on lp1
  912. 2 = /dev/pd_bdm2 PD BDM interface on lp2
  913. 4 = /dev/icd_bdm0 ICD BDM interface on lp0
  914. 5 = /dev/icd_bdm1 ICD BDM interface on lp1
  915. 6 = /dev/icd_bdm2 ICD BDM interface on lp2
  916. This device is used for the interfacing to the MC683xx
  917. microcontrollers via Background Debug Mode by use of a
  918. Parallel Port interface. PD is the Motorola Public
  919. Domain Interface and ICD is the commercial interface
  920. by P&E.
  921. 53 block Mylex DAC960 PCI RAID controller; sixth controller
  922. 0 = /dev/rd/c5d0 First disk, whole disk
  923. 8 = /dev/rd/c5d1 Second disk, whole disk
  924. ...
  925. 248 = /dev/rd/c5d31 32nd disk, whole disk
  926. Partitions are handled as for major 48.
  927. 54 char Electrocardiognosis Holter serial card
  928. 0 = /dev/holter0 First Holter port
  929. 1 = /dev/holter1 Second Holter port
  930. 2 = /dev/holter2 Third Holter port
  931. A custom serial card used by Electrocardiognosis SRL
  932. <mseritan@ottonel.pub.ro> to transfer data from Holter
  933. 24-hour heart monitoring equipment.
  934. 54 block Mylex DAC960 PCI RAID controller; seventh controller
  935. 0 = /dev/rd/c6d0 First disk, whole disk
  936. 8 = /dev/rd/c6d1 Second disk, whole disk
  937. ...
  938. 248 = /dev/rd/c6d31 32nd disk, whole disk
  939. Partitions are handled as for major 48.
  940. 55 char DSP56001 digital signal processor
  941. 0 = /dev/dsp56k First DSP56001
  942. 55 block Mylex DAC960 PCI RAID controller; eigth controller
  943. 0 = /dev/rd/c7d0 First disk, whole disk
  944. 8 = /dev/rd/c7d1 Second disk, whole disk
  945. ...
  946. 248 = /dev/rd/c7d31 32nd disk, whole disk
  947. Partitions are handled as for major 48.
  948. 56 char Apple Desktop Bus
  949. 0 = /dev/adb ADB bus control
  950. Additional devices will be added to this number, all
  951. starting with /dev/adb.
  952. 56 block Fifth IDE hard disk/CD-ROM interface
  953. 0 = /dev/hdi Master: whole disk (or CD-ROM)
  954. 64 = /dev/hdj Slave: whole disk (or CD-ROM)
  955. Partitions are handled the same way as for the first
  956. interface (see major number 3).
  957. 57 char Hayes ESP serial card
  958. 0 = /dev/ttyP0 First ESP port
  959. 1 = /dev/ttyP1 Second ESP port
  960. ...
  961. 57 block Sixth IDE hard disk/CD-ROM interface
  962. 0 = /dev/hdk Master: whole disk (or CD-ROM)
  963. 64 = /dev/hdl Slave: whole disk (or CD-ROM)
  964. Partitions are handled the same way as for the first
  965. interface (see major number 3).
  966. 58 char Hayes ESP serial card - alternate devices
  967. 0 = /dev/cup0 Callout device for ttyP0
  968. 1 = /dev/cup1 Callout device for ttyP1
  969. ...
  970. 58 block Reserved for logical volume manager
  971. 59 char sf firewall package
  972. 0 = /dev/firewall Communication with sf kernel module
  973. 59 block Generic PDA filesystem device
  974. 0 = /dev/pda0 First PDA device
  975. 1 = /dev/pda1 Second PDA device
  976. ...
  977. The pda devices are used to mount filesystems on
  978. remote pda's (basically slow handheld machines with
  979. proprietary OS's and limited memory and storage
  980. running small fs translation drivers) through serial /
  981. IRDA / parallel links.
  982. NAMING CONFLICT -- PROPOSED REVISED NAME /dev/rpda0 etc
  983. 60-63 char LOCAL/EXPERIMENTAL USE
  984. 60-63 block LOCAL/EXPERIMENTAL USE
  985. Allocated for local/experimental use. For devices not
  986. assigned official numbers, these ranges should be
  987. used in order to avoid conflicting with future assignments.
  988. 64 char ENskip kernel encryption package
  989. 0 = /dev/enskip Communication with ENskip kernel module
  990. 64 block Scramdisk/DriveCrypt encrypted devices
  991. 0 = /dev/scramdisk/master Master node for ioctls
  992. 1 = /dev/scramdisk/1 First encrypted device
  993. 2 = /dev/scramdisk/2 Second encrypted device
  994. ...
  995. 255 = /dev/scramdisk/255 255th encrypted device
  996. The filename of the encrypted container and the passwords
  997. are sent via ioctls (using the sdmount tool) to the master
  998. node which then activates them via one of the
  999. /dev/scramdisk/x nodes for loopback mounting (all handled
  1000. through the sdmount tool).
  1001. Requested by: andy@scramdisklinux.org
  1002. 65 char Sundance "plink" Transputer boards (obsolete, unused)
  1003. 0 = /dev/plink0 First plink device
  1004. 1 = /dev/plink1 Second plink device
  1005. 2 = /dev/plink2 Third plink device
  1006. 3 = /dev/plink3 Fourth plink device
  1007. 64 = /dev/rplink0 First plink device, raw
  1008. 65 = /dev/rplink1 Second plink device, raw
  1009. 66 = /dev/rplink2 Third plink device, raw
  1010. 67 = /dev/rplink3 Fourth plink device, raw
  1011. 128 = /dev/plink0d First plink device, debug
  1012. 129 = /dev/plink1d Second plink device, debug
  1013. 130 = /dev/plink2d Third plink device, debug
  1014. 131 = /dev/plink3d Fourth plink device, debug
  1015. 192 = /dev/rplink0d First plink device, raw, debug
  1016. 193 = /dev/rplink1d Second plink device, raw, debug
  1017. 194 = /dev/rplink2d Third plink device, raw, debug
  1018. 195 = /dev/rplink3d Fourth plink device, raw, debug
  1019. This is a commercial driver; contact James Howes
  1020. <jth@prosig.demon.co.uk> for information.
  1021. 65 block SCSI disk devices (16-31)
  1022. 0 = /dev/sdq 17th SCSI disk whole disk
  1023. 16 = /dev/sdr 18th SCSI disk whole disk
  1024. 32 = /dev/sds 19th SCSI disk whole disk
  1025. ...
  1026. 240 = /dev/sdaf 32nd SCSI disk whole disk
  1027. Partitions are handled in the same way as for IDE
  1028. disks (see major number 3) except that the limit on
  1029. partitions is 15.
  1030. 66 char YARC PowerPC PCI coprocessor card
  1031. 0 = /dev/yppcpci0 First YARC card
  1032. 1 = /dev/yppcpci1 Second YARC card
  1033. ...
  1034. 66 block SCSI disk devices (32-47)
  1035. 0 = /dev/sdag 33th SCSI disk whole disk
  1036. 16 = /dev/sdah 34th SCSI disk whole disk
  1037. 32 = /dev/sdai 35th SCSI disk whole disk
  1038. ...
  1039. 240 = /dev/sdav 48nd SCSI disk whole disk
  1040. Partitions are handled in the same way as for IDE
  1041. disks (see major number 3) except that the limit on
  1042. partitions is 15.
  1043. 67 char Coda network file system
  1044. 0 = /dev/cfs0 Coda cache manager
  1045. See http://www.coda.cs.cmu.edu for information about Coda.
  1046. 67 block SCSI disk devices (48-63)
  1047. 0 = /dev/sdaw 49th SCSI disk whole disk
  1048. 16 = /dev/sdax 50th SCSI disk whole disk
  1049. 32 = /dev/sday 51st SCSI disk whole disk
  1050. ...
  1051. 240 = /dev/sdbl 64th SCSI disk whole disk
  1052. Partitions are handled in the same way as for IDE
  1053. disks (see major number 3) except that the limit on
  1054. partitions is 15.
  1055. 68 char CAPI 2.0 interface
  1056. 0 = /dev/capi20 Control device
  1057. 1 = /dev/capi20.00 First CAPI 2.0 application
  1058. 2 = /dev/capi20.01 Second CAPI 2.0 application
  1059. ...
  1060. 20 = /dev/capi20.19 19th CAPI 2.0 application
  1061. ISDN CAPI 2.0 driver for use with CAPI 2.0
  1062. applications; currently supports the AVM B1 card.
  1063. 68 block SCSI disk devices (64-79)
  1064. 0 = /dev/sdbm 65th SCSI disk whole disk
  1065. 16 = /dev/sdbn 66th SCSI disk whole disk
  1066. 32 = /dev/sdbo 67th SCSI disk whole disk
  1067. ...
  1068. 240 = /dev/sdcb 80th SCSI disk whole disk
  1069. Partitions are handled in the same way as for IDE
  1070. disks (see major number 3) except that the limit on
  1071. partitions is 15.
  1072. 69 char MA16 numeric accelerator card
  1073. 0 = /dev/ma16 Board memory access
  1074. 69 block SCSI disk devices (80-95)
  1075. 0 = /dev/sdcc 81st SCSI disk whole disk
  1076. 16 = /dev/sdcd 82nd SCSI disk whole disk
  1077. 32 = /dev/sdce 83th SCSI disk whole disk
  1078. ...
  1079. 240 = /dev/sdcr 96th SCSI disk whole disk
  1080. Partitions are handled in the same way as for IDE
  1081. disks (see major number 3) except that the limit on
  1082. partitions is 15.
  1083. 70 char SpellCaster Protocol Services Interface
  1084. 0 = /dev/apscfg Configuration interface
  1085. 1 = /dev/apsauth Authentication interface
  1086. 2 = /dev/apslog Logging interface
  1087. 3 = /dev/apsdbg Debugging interface
  1088. 64 = /dev/apsisdn ISDN command interface
  1089. 65 = /dev/apsasync Async command interface
  1090. 128 = /dev/apsmon Monitor interface
  1091. 70 block SCSI disk devices (96-111)
  1092. 0 = /dev/sdcs 97th SCSI disk whole disk
  1093. 16 = /dev/sdct 98th SCSI disk whole disk
  1094. 32 = /dev/sdcu 99th SCSI disk whole disk
  1095. ...
  1096. 240 = /dev/sddh 112nd SCSI disk whole disk
  1097. Partitions are handled in the same way as for IDE
  1098. disks (see major number 3) except that the limit on
  1099. partitions is 15.
  1100. 71 char Computone IntelliPort II serial card
  1101. 0 = /dev/ttyF0 IntelliPort II board 0, port 0
  1102. 1 = /dev/ttyF1 IntelliPort II board 0, port 1
  1103. ...
  1104. 63 = /dev/ttyF63 IntelliPort II board 0, port 63
  1105. 64 = /dev/ttyF64 IntelliPort II board 1, port 0
  1106. 65 = /dev/ttyF65 IntelliPort II board 1, port 1
  1107. ...
  1108. 127 = /dev/ttyF127 IntelliPort II board 1, port 63
  1109. 128 = /dev/ttyF128 IntelliPort II board 2, port 0
  1110. 129 = /dev/ttyF129 IntelliPort II board 2, port 1
  1111. ...
  1112. 191 = /dev/ttyF191 IntelliPort II board 2, port 63
  1113. 192 = /dev/ttyF192 IntelliPort II board 3, port 0
  1114. 193 = /dev/ttyF193 IntelliPort II board 3, port 1
  1115. ...
  1116. 255 = /dev/ttyF255 IntelliPort II board 3, port 63
  1117. 71 block SCSI disk devices (112-127)
  1118. 0 = /dev/sddi 113th SCSI disk whole disk
  1119. 16 = /dev/sddj 114th SCSI disk whole disk
  1120. 32 = /dev/sddk 115th SCSI disk whole disk
  1121. ...
  1122. 240 = /dev/sddx 128th SCSI disk whole disk
  1123. Partitions are handled in the same way as for IDE
  1124. disks (see major number 3) except that the limit on
  1125. partitions is 15.
  1126. 72 char Computone IntelliPort II serial card - alternate devices
  1127. 0 = /dev/cuf0 Callout device for ttyF0
  1128. 1 = /dev/cuf1 Callout device for ttyF1
  1129. ...
  1130. 63 = /dev/cuf63 Callout device for ttyF63
  1131. 64 = /dev/cuf64 Callout device for ttyF64
  1132. 65 = /dev/cuf65 Callout device for ttyF65
  1133. ...
  1134. 127 = /dev/cuf127 Callout device for ttyF127
  1135. 128 = /dev/cuf128 Callout device for ttyF128
  1136. 129 = /dev/cuf129 Callout device for ttyF129
  1137. ...
  1138. 191 = /dev/cuf191 Callout device for ttyF191
  1139. 192 = /dev/cuf192 Callout device for ttyF192
  1140. 193 = /dev/cuf193 Callout device for ttyF193
  1141. ...
  1142. 255 = /dev/cuf255 Callout device for ttyF255
  1143. 72 block Compaq Intelligent Drive Array, first controller
  1144. 0 = /dev/ida/c0d0 First logical drive whole disk
  1145. 16 = /dev/ida/c0d1 Second logical drive whole disk
  1146. ...
  1147. 240 = /dev/ida/c0d15 16th logical drive whole disk
  1148. Partitions are handled the same way as for Mylex
  1149. DAC960 (see major number 48) except that the limit on
  1150. partitions is 15.
  1151. 73 char Computone IntelliPort II serial card - control devices
  1152. 0 = /dev/ip2ipl0 Loadware device for board 0
  1153. 1 = /dev/ip2stat0 Status device for board 0
  1154. 4 = /dev/ip2ipl1 Loadware device for board 1
  1155. 5 = /dev/ip2stat1 Status device for board 1
  1156. 8 = /dev/ip2ipl2 Loadware device for board 2
  1157. 9 = /dev/ip2stat2 Status device for board 2
  1158. 12 = /dev/ip2ipl3 Loadware device for board 3
  1159. 13 = /dev/ip2stat3 Status device for board 3
  1160. 73 block Compaq Intelligent Drive Array, second controller
  1161. 0 = /dev/ida/c1d0 First logical drive whole disk
  1162. 16 = /dev/ida/c1d1 Second logical drive whole disk
  1163. ...
  1164. 240 = /dev/ida/c1d15 16th logical drive whole disk
  1165. Partitions are handled the same way as for Mylex
  1166. DAC960 (see major number 48) except that the limit on
  1167. partitions is 15.
  1168. 74 char SCI bridge
  1169. 0 = /dev/SCI/0 SCI device 0
  1170. 1 = /dev/SCI/1 SCI device 1
  1171. ...
  1172. Currently for Dolphin Interconnect Solutions' PCI-SCI
  1173. bridge.
  1174. 74 block Compaq Intelligent Drive Array, third controller
  1175. 0 = /dev/ida/c2d0 First logical drive whole disk
  1176. 16 = /dev/ida/c2d1 Second logical drive whole disk
  1177. ...
  1178. 240 = /dev/ida/c2d15 16th logical drive whole disk
  1179. Partitions are handled the same way as for Mylex
  1180. DAC960 (see major number 48) except that the limit on
  1181. partitions is 15.
  1182. 75 char Specialix IO8+ serial card
  1183. 0 = /dev/ttyW0 First IO8+ port, first card
  1184. 1 = /dev/ttyW1 Second IO8+ port, first card
  1185. ...
  1186. 8 = /dev/ttyW8 First IO8+ port, second card
  1187. ...
  1188. 75 block Compaq Intelligent Drive Array, fourth controller
  1189. 0 = /dev/ida/c3d0 First logical drive whole disk
  1190. 16 = /dev/ida/c3d1 Second logical drive whole disk
  1191. ...
  1192. 240 = /dev/ida/c3d15 16th logical drive whole disk
  1193. Partitions are handled the same way as for Mylex
  1194. DAC960 (see major number 48) except that the limit on
  1195. partitions is 15.
  1196. 76 char Specialix IO8+ serial card - alternate devices
  1197. 0 = /dev/cuw0 Callout device for ttyW0
  1198. 1 = /dev/cuw1 Callout device for ttyW1
  1199. ...
  1200. 8 = /dev/cuw8 Callout device for ttyW8
  1201. ...
  1202. 76 block Compaq Intelligent Drive Array, fifth controller
  1203. 0 = /dev/ida/c4d0 First logical drive whole disk
  1204. 16 = /dev/ida/c4d1 Second logical drive whole disk
  1205. ...
  1206. 240 = /dev/ida/c4d15 16th logical drive whole disk
  1207. Partitions are handled the same way as for Mylex
  1208. DAC960 (see major number 48) except that the limit on
  1209. partitions is 15.
  1210. 77 char ComScire Quantum Noise Generator
  1211. 0 = /dev/qng ComScire Quantum Noise Generator
  1212. 77 block Compaq Intelligent Drive Array, sixth controller
  1213. 0 = /dev/ida/c5d0 First logical drive whole disk
  1214. 16 = /dev/ida/c5d1 Second logical drive whole disk
  1215. ...
  1216. 240 = /dev/ida/c5d15 16th logical drive whole disk
  1217. Partitions are handled the same way as for Mylex
  1218. DAC960 (see major number 48) except that the limit on
  1219. partitions is 15.
  1220. 78 char PAM Software's multimodem boards
  1221. 0 = /dev/ttyM0 First PAM modem
  1222. 1 = /dev/ttyM1 Second PAM modem
  1223. ...
  1224. 78 block Compaq Intelligent Drive Array, seventh controller
  1225. 0 = /dev/ida/c6d0 First logical drive whole disk
  1226. 16 = /dev/ida/c6d1 Second logical drive whole disk
  1227. ...
  1228. 240 = /dev/ida/c6d15 16th logical drive whole disk
  1229. Partitions are handled the same way as for Mylex
  1230. DAC960 (see major number 48) except that the limit on
  1231. partitions is 15.
  1232. 79 char PAM Software's multimodem boards - alternate devices
  1233. 0 = /dev/cum0 Callout device for ttyM0
  1234. 1 = /dev/cum1 Callout device for ttyM1
  1235. ...
  1236. 79 block Compaq Intelligent Drive Array, eigth controller
  1237. 0 = /dev/ida/c7d0 First logical drive whole disk
  1238. 16 = /dev/ida/c7d1 Second logical drive whole disk
  1239. ...
  1240. 240 = /dev/ida/c715 16th logical drive whole disk
  1241. Partitions are handled the same way as for Mylex
  1242. DAC960 (see major number 48) except that the limit on
  1243. partitions is 15.
  1244. 80 char Photometrics AT200 CCD camera
  1245. 0 = /dev/at200 Photometrics AT200 CCD camera
  1246. 80 block I2O hard disk
  1247. 0 = /dev/i2o/hda First I2O hard disk, whole disk
  1248. 16 = /dev/i2o/hdb Second I2O hard disk, whole disk
  1249. ...
  1250. 240 = /dev/i2o/hdp 16th I2O hard disk, whole disk
  1251. Partitions are handled in the same way as for IDE
  1252. disks (see major number 3) except that the limit on
  1253. partitions is 15.
  1254. 81 char video4linux
  1255. 0 = /dev/video0 Video capture/overlay device
  1256. ...
  1257. 63 = /dev/video63 Video capture/overlay device
  1258. 64 = /dev/radio0 Radio device
  1259. ...
  1260. 127 = /dev/radio63 Radio device
  1261. 192 = /dev/vtx0 Teletext device
  1262. ...
  1263. 223 = /dev/vtx31 Teletext device
  1264. 224 = /dev/vbi0 Vertical blank interrupt
  1265. ...
  1266. 255 = /dev/vbi31 Vertical blank interrupt
  1267. 81 block I2O hard disk
  1268. 0 = /dev/i2o/hdq 17th I2O hard disk, whole disk
  1269. 16 = /dev/i2o/hdr 18th I2O hard disk, whole disk
  1270. ...
  1271. 240 = /dev/i2o/hdaf 32nd I2O hard disk, whole disk
  1272. Partitions are handled in the same way as for IDE
  1273. disks (see major number 3) except that the limit on
  1274. partitions is 15.
  1275. 82 char WiNRADiO communications receiver card
  1276. 0 = /dev/winradio0 First WiNRADiO card
  1277. 1 = /dev/winradio1 Second WiNRADiO card
  1278. ...
  1279. The driver and documentation may be obtained from
  1280. http://www.proximity.com.au/~brian/winradio/
  1281. 82 block I2O hard disk
  1282. 0 = /dev/i2o/hdag 33rd I2O hard disk, whole disk
  1283. 16 = /dev/i2o/hdah 34th I2O hard disk, whole disk
  1284. ...
  1285. 240 = /dev/i2o/hdav 48th I2O hard disk, whole disk
  1286. Partitions are handled in the same way as for IDE
  1287. disks (see major number 3) except that the limit on
  1288. partitions is 15.
  1289. 83 char Matrox mga_vid video driver
  1290. 0 = /dev/mga_vid0 1st video card
  1291. 1 = /dev/mga_vid1 2nd video card
  1292. 2 = /dev/mga_vid2 3rd video card
  1293. ...
  1294. 15 = /dev/mga_vid15 16th video card
  1295. 83 block I2O hard disk
  1296. 0 = /dev/i2o/hdaw 49th I2O hard disk, whole disk
  1297. 16 = /dev/i2o/hdax 50th I2O hard disk, whole disk
  1298. ...
  1299. 240 = /dev/i2o/hdbl 64th I2O hard disk, whole disk
  1300. Partitions are handled in the same way as for IDE
  1301. disks (see major number 3) except that the limit on
  1302. partitions is 15.
  1303. 84 char Ikon 1011[57] Versatec Greensheet Interface
  1304. 0 = /dev/ihcp0 First Greensheet port
  1305. 1 = /dev/ihcp1 Second Greensheet port
  1306. 84 block I2O hard disk
  1307. 0 = /dev/i2o/hdbm 65th I2O hard disk, whole disk
  1308. 16 = /dev/i2o/hdbn 66th I2O hard disk, whole disk
  1309. ...
  1310. 240 = /dev/i2o/hdcb 80th I2O hard disk, whole disk
  1311. Partitions are handled in the same way as for IDE
  1312. disks (see major number 3) except that the limit on
  1313. partitions is 15.
  1314. 85 char Linux/SGI shared memory input queue
  1315. 0 = /dev/shmiq Master shared input queue
  1316. 1 = /dev/qcntl0 First device pushed
  1317. 2 = /dev/qcntl1 Second device pushed
  1318. ...
  1319. 85 block I2O hard disk
  1320. 0 = /dev/i2o/hdcc 81st I2O hard disk, whole disk
  1321. 16 = /dev/i2o/hdcd 82nd I2O hard disk, whole disk
  1322. ...
  1323. 240 = /dev/i2o/hdcr 96th I2O hard disk, whole disk
  1324. Partitions are handled in the same way as for IDE
  1325. disks (see major number 3) except that the limit on
  1326. partitions is 15.
  1327. 86 char SCSI media changer
  1328. 0 = /dev/sch0 First SCSI media changer
  1329. 1 = /dev/sch1 Second SCSI media changer
  1330. ...
  1331. 86 block I2O hard disk
  1332. 0 = /dev/i2o/hdcs 97th I2O hard disk, whole disk
  1333. 16 = /dev/i2o/hdct 98th I2O hard disk, whole disk
  1334. ...
  1335. 240 = /dev/i2o/hddh 112th I2O hard disk, whole disk
  1336. Partitions are handled in the same way as for IDE
  1337. disks (see major number 3) except that the limit on
  1338. partitions is 15.
  1339. 87 char Sony Control-A1 stereo control bus
  1340. 0 = /dev/controla0 First device on chain
  1341. 1 = /dev/controla1 Second device on chain
  1342. ...
  1343. 87 block I2O hard disk
  1344. 0 = /dev/i2o/hddi 113rd I2O hard disk, whole disk
  1345. 16 = /dev/i2o/hddj 114th I2O hard disk, whole disk
  1346. ...
  1347. 240 = /dev/i2o/hddx 128th I2O hard disk, whole disk
  1348. Partitions are handled in the same way as for IDE
  1349. disks (see major number 3) except that the limit on
  1350. partitions is 15.
  1351. 88 char COMX synchronous serial card
  1352. 0 = /dev/comx0 COMX channel 0
  1353. 1 = /dev/comx1 COMX channel 1
  1354. ...
  1355. 88 block Seventh IDE hard disk/CD-ROM interface
  1356. 0 = /dev/hdm Master: whole disk (or CD-ROM)
  1357. 64 = /dev/hdn Slave: whole disk (or CD-ROM)
  1358. Partitions are handled the same way as for the first
  1359. interface (see major number 3).
  1360. 89 char I2C bus interface
  1361. 0 = /dev/i2c-0 First I2C adapter
  1362. 1 = /dev/i2c-1 Second I2C adapter
  1363. ...
  1364. 89 block Eighth IDE hard disk/CD-ROM interface
  1365. 0 = /dev/hdo Master: whole disk (or CD-ROM)
  1366. 64 = /dev/hdp Slave: whole disk (or CD-ROM)
  1367. Partitions are handled the same way as for the first
  1368. interface (see major number 3).
  1369. 90 char Memory Technology Device (RAM, ROM, Flash)
  1370. 0 = /dev/mtd0 First MTD (rw)
  1371. 1 = /dev/mtdr0 First MTD (ro)
  1372. ...
  1373. 30 = /dev/mtd15 16th MTD (rw)
  1374. 31 = /dev/mtdr15 16th MTD (ro)
  1375. 90 block Ninth IDE hard disk/CD-ROM interface
  1376. 0 = /dev/hdq Master: whole disk (or CD-ROM)
  1377. 64 = /dev/hdr Slave: whole disk (or CD-ROM)
  1378. Partitions are handled the same way as for the first
  1379. interface (see major number 3).
  1380. 91 char CAN-Bus devices
  1381. 0 = /dev/can0 First CAN-Bus controller
  1382. 1 = /dev/can1 Second CAN-Bus controller
  1383. ...
  1384. 91 block Tenth IDE hard disk/CD-ROM interface
  1385. 0 = /dev/hds Master: whole disk (or CD-ROM)
  1386. 64 = /dev/hdt Slave: whole disk (or CD-ROM)
  1387. Partitions are handled the same way as for the first
  1388. interface (see major number 3).
  1389. 92 char Reserved for ith Kommunikationstechnik MIC ISDN card
  1390. 92 block PPDD encrypted disk driver
  1391. 0 = /dev/ppdd0 First encrypted disk
  1392. 1 = /dev/ppdd1 Second encrypted disk
  1393. ...
  1394. Partitions are handled in the same way as for IDE
  1395. disks (see major number 3) except that the limit on
  1396. partitions is 15.
  1397. 93 char IBM Smart Capture Card frame grabber {2.6}
  1398. 0 = /dev/iscc0 First Smart Capture Card
  1399. 1 = /dev/iscc1 Second Smart Capture Card
  1400. ...
  1401. 128 = /dev/isccctl0 First Smart Capture Card control
  1402. 129 = /dev/isccctl1 Second Smart Capture Card control
  1403. ...
  1404. 93 block NAND Flash Translation Layer filesystem
  1405. 0 = /dev/nftla First NFTL layer
  1406. 16 = /dev/nftlb Second NFTL layer
  1407. ...
  1408. 240 = /dev/nftlp 16th NTFL layer
  1409. 94 char miroVIDEO DC10/30 capture/playback device {2.6}
  1410. 0 = /dev/dcxx0 First capture card
  1411. 1 = /dev/dcxx1 Second capture card
  1412. ...
  1413. 94 block IBM S/390 DASD block storage
  1414. 0 = /dev/dasda First DASD device, major
  1415. 1 = /dev/dasda1 First DASD device, block 1
  1416. 2 = /dev/dasda2 First DASD device, block 2
  1417. 3 = /dev/dasda3 First DASD device, block 3
  1418. 4 = /dev/dasdb Second DASD device, major
  1419. 5 = /dev/dasdb1 Second DASD device, block 1
  1420. 6 = /dev/dasdb2 Second DASD device, block 2
  1421. 7 = /dev/dasdb3 Second DASD device, block 3
  1422. ...
  1423. 95 char IP filter
  1424. 0 = /dev/ipl Filter control device/log file
  1425. 1 = /dev/ipnat NAT control device/log file
  1426. 2 = /dev/ipstate State information log file
  1427. 3 = /dev/ipauth Authentication control device/log file
  1428. ...
  1429. 96 char Parallel port ATAPI tape devices
  1430. 0 = /dev/pt0 First parallel port ATAPI tape
  1431. 1 = /dev/pt1 Second parallel port ATAPI tape
  1432. ...
  1433. 128 = /dev/npt0 First p.p. ATAPI tape, no rewind
  1434. 129 = /dev/npt1 Second p.p. ATAPI tape, no rewind
  1435. ...
  1436. 96 block Inverse NAND Flash Translation Layer
  1437. 0 = /dev/inftla First INFTL layer
  1438. 16 = /dev/inftlb Second INFTL layer
  1439. ...
  1440. 240 = /dev/inftlp 16th INTFL layer
  1441. 97 char Parallel port generic ATAPI interface
  1442. 0 = /dev/pg0 First parallel port ATAPI device
  1443. 1 = /dev/pg1 Second parallel port ATAPI device
  1444. 2 = /dev/pg2 Third parallel port ATAPI device
  1445. 3 = /dev/pg3 Fourth parallel port ATAPI device
  1446. These devices support the same API as the generic SCSI
  1447. devices.
  1448. 97 block Packet writing for CD/DVD devices
  1449. 0 = /dev/pktcdvd0 First packet-writing module
  1450. 1 = /dev/pktcdvd1 Second packet-writing module
  1451. ...
  1452. 98 char Control and Measurement Device (comedi)
  1453. 0 = /dev/comedi0 First comedi device
  1454. 1 = /dev/comedi1 Second comedi device
  1455. ...
  1456. See http://stm.lbl.gov/comedi or http://www.llp.fu-berlin.de/.
  1457. 98 block User-mode virtual block device
  1458. 0 = /dev/ubda First user-mode block device
  1459. 16 = /dev/udbb Second user-mode block device
  1460. ...
  1461. Partitions are handled in the same way as for IDE
  1462. disks (see major number 3) except that the limit on
  1463. partitions is 15.
  1464. This device is used by the user-mode virtual kernel port.
  1465. 99 char Raw parallel ports
  1466. 0 = /dev/parport0 First parallel port
  1467. 1 = /dev/parport1 Second parallel port
  1468. ...
  1469. 99 block JavaStation flash disk
  1470. 0 = /dev/jsfd JavaStation flash disk
  1471. 100 char Telephony for Linux
  1472. 0 = /dev/phone0 First telephony device
  1473. 1 = /dev/phone1 Second telephony device
  1474. ...
  1475. 101 char Motorola DSP 56xxx board
  1476. 0 = /dev/mdspstat Status information
  1477. 1 = /dev/mdsp1 First DSP board I/O controls
  1478. ...
  1479. 16 = /dev/mdsp16 16th DSP board I/O controls
  1480. 101 block AMI HyperDisk RAID controller
  1481. 0 = /dev/amiraid/ar0 First array whole disk
  1482. 16 = /dev/amiraid/ar1 Second array whole disk
  1483. ...
  1484. 240 = /dev/amiraid/ar15 16th array whole disk
  1485. For each device, partitions are added as:
  1486. 0 = /dev/amiraid/ar? Whole disk
  1487. 1 = /dev/amiraid/ar?p1 First partition
  1488. 2 = /dev/amiraid/ar?p2 Second partition
  1489. ...
  1490. 15 = /dev/amiraid/ar?p15 15th partition
  1491. 102 char Philips SAA5249 Teletext signal decoder {2.6}
  1492. 0 = /dev/tlk0 First Teletext decoder
  1493. 1 = /dev/tlk1 Second Teletext decoder
  1494. 2 = /dev/tlk2 Third Teletext decoder
  1495. 3 = /dev/tlk3 Fourth Teletext decoder
  1496. 102 block Compressed block device
  1497. 0 = /dev/cbd/a First compressed block device, whole device
  1498. 16 = /dev/cbd/b Second compressed block device, whole device
  1499. ...
  1500. 240 = /dev/cbd/p 16th compressed block device, whole device
  1501. Partitions are handled in the same way as for IDE
  1502. disks (see major number 3) except that the limit on
  1503. partitions is 15.
  1504. 103 char Arla network file system
  1505. 0 = /dev/nnpfs0 First NNPFS device
  1506. 1 = /dev/nnpfs1 Second NNPFS device
  1507. Arla is a free clone of the Andrew File System, AFS.
  1508. The NNPFS device gives user mode filesystem
  1509. implementations a kernel presence for caching and easy
  1510. mounting. For more information about the project,
  1511. write to <arla-drinkers@stacken.kth.se> or see
  1512. http://www.stacken.kth.se/project/arla/
  1513. 103 block Audit device
  1514. 0 = /dev/audit Audit device
  1515. 104 char Flash BIOS support
  1516. 104 block Compaq Next Generation Drive Array, first controller
  1517. 0 = /dev/cciss/c0d0 First logical drive, whole disk
  1518. 16 = /dev/cciss/c0d1 Second logical drive, whole disk
  1519. ...
  1520. 240 = /dev/cciss/c0d15 16th logical drive, whole disk
  1521. Partitions are handled the same way as for Mylex
  1522. DAC960 (see major number 48) except that the limit on
  1523. partitions is 15.
  1524. 105 char Comtrol VS-1000 serial controller
  1525. 0 = /dev/ttyV0 First VS-1000 port
  1526. 1 = /dev/ttyV1 Second VS-1000 port
  1527. ...
  1528. 105 block Compaq Next Generation Drive Array, second controller
  1529. 0 = /dev/cciss/c1d0 First logical drive, whole disk
  1530. 16 = /dev/cciss/c1d1 Second logical drive, whole disk
  1531. ...
  1532. 240 = /dev/cciss/c1d15 16th logical drive, whole disk
  1533. Partitions are handled the same way as for Mylex
  1534. DAC960 (see major number 48) except that the limit on
  1535. partitions is 15.
  1536. 106 char Comtrol VS-1000 serial controller - alternate devices
  1537. 0 = /dev/cuv0 First VS-1000 port
  1538. 1 = /dev/cuv1 Second VS-1000 port
  1539. ...
  1540. 106 block Compaq Next Generation Drive Array, third controller
  1541. 0 = /dev/cciss/c2d0 First logical drive, whole disk
  1542. 16 = /dev/cciss/c2d1 Second logical drive, whole disk
  1543. ...
  1544. 240 = /dev/cciss/c2d15 16th logical drive, whole disk
  1545. Partitions are handled the same way as for Mylex
  1546. DAC960 (see major number 48) except that the limit on
  1547. partitions is 15.
  1548. 107 char 3Dfx Voodoo Graphics device
  1549. 0 = /dev/3dfx Primary 3Dfx graphics device
  1550. 107 block Compaq Next Generation Drive Array, fourth controller
  1551. 0 = /dev/cciss/c3d0 First logical drive, whole disk
  1552. 16 = /dev/cciss/c3d1 Second logical drive, whole disk
  1553. ...
  1554. 240 = /dev/cciss/c3d15 16th logical drive, whole disk
  1555. Partitions are handled the same way as for Mylex
  1556. DAC960 (see major number 48) except that the limit on
  1557. partitions is 15.
  1558. 108 char Device independent PPP interface
  1559. 0 = /dev/ppp Device independent PPP interface
  1560. 108 block Compaq Next Generation Drive Array, fifth controller
  1561. 0 = /dev/cciss/c4d0 First logical drive, whole disk
  1562. 16 = /dev/cciss/c4d1 Second logical drive, whole disk
  1563. ...
  1564. 240 = /dev/cciss/c4d15 16th logical drive, whole disk
  1565. Partitions are handled the same way as for Mylex
  1566. DAC960 (see major number 48) except that the limit on
  1567. partitions is 15.
  1568. 109 char Reserved for logical volume manager
  1569. 109 block Compaq Next Generation Drive Array, sixth controller
  1570. 0 = /dev/cciss/c5d0 First logical drive, whole disk
  1571. 16 = /dev/cciss/c5d1 Second logical drive, whole disk
  1572. ...
  1573. 240 = /dev/cciss/c5d15 16th logical drive, whole disk
  1574. Partitions are handled the same way as for Mylex
  1575. DAC960 (see major number 48) except that the limit on
  1576. partitions is 15.
  1577. 110 char miroMEDIA Surround board
  1578. 0 = /dev/srnd0 First miroMEDIA Surround board
  1579. 1 = /dev/srnd1 Second miroMEDIA Surround board
  1580. ...
  1581. 110 block Compaq Next Generation Drive Array, seventh controller
  1582. 0 = /dev/cciss/c6d0 First logical drive, whole disk
  1583. 16 = /dev/cciss/c6d1 Second logical drive, whole disk
  1584. ...
  1585. 240 = /dev/cciss/c6d15 16th logical drive, whole disk
  1586. Partitions are handled the same way as for Mylex
  1587. DAC960 (see major number 48) except that the limit on
  1588. partitions is 15.
  1589. 111 char Philips SAA7146-based audio/video card {2.6}
  1590. 0 = /dev/av0 First A/V card
  1591. 1 = /dev/av1 Second A/V card
  1592. ...
  1593. 111 block Compaq Next Generation Drive Array, eigth controller
  1594. 0 = /dev/cciss/c7d0 First logical drive, whole disk
  1595. 16 = /dev/cciss/c7d1 Second logical drive, whole disk
  1596. ...
  1597. 240 = /dev/cciss/c7d15 16th logical drive, whole disk
  1598. Partitions are handled the same way as for Mylex
  1599. DAC960 (see major number 48) except that the limit on
  1600. partitions is 15.
  1601. 112 char ISI serial card
  1602. 0 = /dev/ttyM0 First ISI port
  1603. 1 = /dev/ttyM1 Second ISI port
  1604. ...
  1605. There is currently a device-naming conflict between
  1606. these and PAM multimodems (major 78).
  1607. 112 block IBM iSeries virtual disk
  1608. 0 = /dev/iseries/vda First virtual disk, whole disk
  1609. 8 = /dev/iseries/vdb Second virtual disk, whole disk
  1610. ...
  1611. 200 = /dev/iseries/vdz 26th virtual disk, whole disk
  1612. 208 = /dev/iseries/vdaa 27th virtual disk, whole disk
  1613. ...
  1614. 248 = /dev/iseries/vdaf 32nd virtual disk, whole disk
  1615. Partitions are handled in the same way as for IDE
  1616. disks (see major number 3) except that the limit on
  1617. partitions is 7.
  1618. 113 char ISI serial card - alternate devices
  1619. 0 = /dev/cum0 Callout device for ttyM0
  1620. 1 = /dev/cum1 Callout device for ttyM1
  1621. ...
  1622. 113 block IBM iSeries virtual CD-ROM
  1623. 0 = /dev/iseries/vcda First virtual CD-ROM
  1624. 1 = /dev/iseries/vcdb Second virtual CD-ROM
  1625. ...
  1626. 114 char Picture Elements ISE board
  1627. 0 = /dev/ise0 First ISE board
  1628. 1 = /dev/ise1 Second ISE board
  1629. ...
  1630. 128 = /dev/isex0 Control node for first ISE board
  1631. 129 = /dev/isex1 Control node for second ISE board
  1632. ...
  1633. The ISE board is an embedded computer, optimized for
  1634. image processing. The /dev/iseN nodes are the general
  1635. I/O access to the board, the /dev/isex0 nodes command
  1636. nodes used to control the board.
  1637. 114 block IDE BIOS powered software RAID interfaces such as the
  1638. Promise Fastrak
  1639. 0 = /dev/ataraid/d0
  1640. 1 = /dev/ataraid/d0p1
  1641. 2 = /dev/ataraid/d0p2
  1642. ...
  1643. 16 = /dev/ataraid/d1
  1644. 17 = /dev/ataraid/d1p1
  1645. 18 = /dev/ataraid/d1p2
  1646. ...
  1647. 255 = /dev/ataraid/d15p15
  1648. Partitions are handled in the same way as for IDE
  1649. disks (see major number 3) except that the limit on
  1650. partitions is 15.
  1651. 115 char TI link cable devices (115 was formerly the console driver speaker)
  1652. 0 = /dev/tipar0 Parallel cable on first parallel port
  1653. ...
  1654. 7 = /dev/tipar7 Parallel cable on seventh parallel port
  1655. 8 = /dev/tiser0 Serial cable on first serial port
  1656. ...
  1657. 15 = /dev/tiser7 Serial cable on seventh serial port
  1658. 16 = /dev/tiusb0 First USB cable
  1659. ...
  1660. 47 = /dev/tiusb31 32nd USB cable
  1661. 115 block NetWare (NWFS) Devices (0-255)
  1662. The NWFS (NetWare) devices are used to present a
  1663. collection of NetWare Mirror Groups or NetWare
  1664. Partitions as a logical storage segment for
  1665. use in mounting NetWare volumes. A maximum of
  1666. 256 NetWare volumes can be supported in a single
  1667. machine.
  1668. http://www.kernel.org/pub/linux/kernel/people/jmerkey/nwfs
  1669. 0 = /dev/nwfs/v0 First NetWare (NWFS) Logical Volume
  1670. 1 = /dev/nwfs/v1 Second NetWare (NWFS) Logical Volume
  1671. 2 = /dev/nwfs/v2 Third NetWare (NWFS) Logical Volume
  1672. ...
  1673. 255 = /dev/nwfs/v255 Last NetWare (NWFS) Logical Volume
  1674. 116 char Advanced Linux Sound Driver (ALSA)
  1675. 116 block MicroMemory battery backed RAM adapter (NVRAM)
  1676. Supports 16 boards, 15 paritions each.
  1677. Requested by neilb at cse.unsw.edu.au.
  1678. 0 = /dev/umem/d0 Whole of first board
  1679. 1 = /dev/umem/d0p1 First partition of first board
  1680. 2 = /dev/umem/d0p2 Second partition of first board
  1681. 15 = /dev/umem/d0p15 15th partition of first board
  1682. 16 = /dev/umem/d1 Whole of second board
  1683. 17 = /dev/umem/d1p1 First partition of second board
  1684. ...
  1685. 255= /dev/umem/d15p15 15th partition of 16th board.
  1686. 117 char COSA/SRP synchronous serial card
  1687. 0 = /dev/cosa0c0 1st board, 1st channel
  1688. 1 = /dev/cosa0c1 1st board, 2nd channel
  1689. ...
  1690. 16 = /dev/cosa1c0 2nd board, 1st channel
  1691. 17 = /dev/cosa1c1 2nd board, 2nd channel
  1692. ...
  1693. 117 block Enterprise Volume Management System (EVMS)
  1694. The EVMS driver uses a layered, plug-in model to provide
  1695. unparalleled flexibility and extensibility in managing
  1696. storage. This allows for easy expansion or customization
  1697. of various levels of volume management. Requested by
  1698. Mark Peloquin (peloquin at us.ibm.com).
  1699. Note: EVMS populates and manages all the devnodes in
  1700. /dev/evms.
  1701. http://sf.net/projects/evms
  1702. 0 = /dev/evms/block_device EVMS block device
  1703. 1 = /dev/evms/legacyname1 First EVMS legacy device
  1704. 2 = /dev/evms/legacyname2 Second EVMS legacy device
  1705. ...
  1706. Both ranges can grow (down or up) until they meet.
  1707. ...
  1708. 254 = /dev/evms/EVMSname2 Second EVMS native device
  1709. 255 = /dev/evms/EVMSname1 First EVMS native device
  1710. Note: legacyname(s) are derived from the normal legacy
  1711. device names. For example, /dev/hda5 would become
  1712. /dev/evms/hda5.
  1713. 118 char IBM Cryptographic Accelerator
  1714. 0 = /dev/ica Virtual interface to all IBM Crypto Accelerators
  1715. 1 = /dev/ica0 IBMCA Device 0
  1716. 2 = /dev/ica1 IBMCA Device 1
  1717. ...
  1718. 119 char VMware virtual network control
  1719. 0 = /dev/vnet0 1st virtual network
  1720. 1 = /dev/vnet1 2nd virtual network
  1721. ...
  1722. 120-127 char LOCAL/EXPERIMENTAL USE
  1723. 120-127 block LOCAL/EXPERIMENTAL USE
  1724. Allocated for local/experimental use. For devices not
  1725. assigned official numbers, these ranges should be
  1726. used in order to avoid conflicting with future assignments.
  1727. 128-135 char Unix98 PTY masters
  1728. These devices should not have corresponding device
  1729. nodes; instead they should be accessed through the
  1730. /dev/ptmx cloning interface.
  1731. 128 block SCSI disk devices (128-143)
  1732. 0 = /dev/sddy 129th SCSI disk whole disk
  1733. 16 = /dev/sddz 130th SCSI disk whole disk
  1734. 32 = /dev/sdea 131th SCSI disk whole disk
  1735. ...
  1736. 240 = /dev/sden 144th SCSI disk whole disk
  1737. Partitions are handled in the same way as for IDE
  1738. disks (see major number 3) except that the limit on
  1739. partitions is 15.
  1740. 129 block SCSI disk devices (144-159)
  1741. 0 = /dev/sdeo 145th SCSI disk whole disk
  1742. 16 = /dev/sdep 146th SCSI disk whole disk
  1743. 32 = /dev/sdeq 147th SCSI disk whole disk
  1744. ...
  1745. 240 = /dev/sdfd 160th SCSI disk whole disk
  1746. Partitions are handled in the same way as for IDE
  1747. disks (see major number 3) except that the limit on
  1748. partitions is 15.
  1749. 130 char (Misc devices)
  1750. 130 block SCSI disk devices (160-175)
  1751. 0 = /dev/sdfe 161st SCSI disk whole disk
  1752. 16 = /dev/sdff 162nd SCSI disk whole disk
  1753. 32 = /dev/sdfg 163rd SCSI disk whole disk
  1754. ...
  1755. 240 = /dev/sdft 176th SCSI disk whole disk
  1756. Partitions are handled in the same way as for IDE
  1757. disks (see major number 3) except that the limit on
  1758. partitions is 15.
  1759. 131 block SCSI disk devices (176-191)
  1760. 0 = /dev/sdfu 177th SCSI disk whole disk
  1761. 16 = /dev/sdfv 178th SCSI disk whole disk
  1762. 32 = /dev/sdfw 179th SCSI disk whole disk
  1763. ...
  1764. 240 = /dev/sdgj 192nd SCSI disk whole disk
  1765. Partitions are handled in the same way as for IDE
  1766. disks (see major number 3) except that the limit on
  1767. partitions is 15.
  1768. 132 block SCSI disk devices (192-207)
  1769. 0 = /dev/sdgk 193rd SCSI disk whole disk
  1770. 16 = /dev/sdgl 194th SCSI disk whole disk
  1771. 32 = /dev/sdgm 195th SCSI disk whole disk
  1772. ...
  1773. 240 = /dev/sdgz 208th SCSI disk whole disk
  1774. Partitions are handled in the same way as for IDE
  1775. disks (see major number 3) except that the limit on
  1776. partitions is 15.
  1777. 133 block SCSI disk devices (208-223)
  1778. 0 = /dev/sdha 209th SCSI disk whole disk
  1779. 16 = /dev/sdhb 210th SCSI disk whole disk
  1780. 32 = /dev/sdhc 211th SCSI disk whole disk
  1781. ...
  1782. 240 = /dev/sdhp 224th SCSI disk whole disk
  1783. Partitions are handled in the same way as for IDE
  1784. disks (see major number 3) except that the limit on
  1785. partitions is 15.
  1786. 134 block SCSI disk devices (224-239)
  1787. 0 = /dev/sdhq 225th SCSI disk whole disk
  1788. 16 = /dev/sdhr 226th SCSI disk whole disk
  1789. 32 = /dev/sdhs 227th SCSI disk whole disk
  1790. ...
  1791. 240 = /dev/sdif 240th SCSI disk whole disk
  1792. Partitions are handled in the same way as for IDE
  1793. disks (see major number 3) except that the limit on
  1794. partitions is 15.
  1795. 135 block SCSI disk devices (240-255)
  1796. 0 = /dev/sdig 241st SCSI disk whole disk
  1797. 16 = /dev/sdih 242nd SCSI disk whole disk
  1798. 32 = /dev/sdih 243rd SCSI disk whole disk
  1799. ...
  1800. 240 = /dev/sdiv 256th SCSI disk whole disk
  1801. Partitions are handled in the same way as for IDE
  1802. disks (see major number 3) except that the limit on
  1803. partitions is 15.
  1804. 136-143 char Unix98 PTY slaves
  1805. 0 = /dev/pts/0 First Unix98 pseudo-TTY
  1806. 1 = /dev/pts/1 Second Unix98 pesudo-TTY
  1807. ...
  1808. These device nodes are automatically generated with
  1809. the proper permissions and modes by mounting the
  1810. devpts filesystem onto /dev/pts with the appropriate
  1811. mount options (distribution dependent, however, on
  1812. *most* distributions the appropriate options are
  1813. "mode=0620,gid=<gid of the "tty" group>".)
  1814. 136 block Mylex DAC960 PCI RAID controller; ninth controller
  1815. 0 = /dev/rd/c8d0 First disk, whole disk
  1816. 8 = /dev/rd/c8d1 Second disk, whole disk
  1817. ...
  1818. 248 = /dev/rd/c8d31 32nd disk, whole disk
  1819. Partitions are handled as for major 48.
  1820. 137 block Mylex DAC960 PCI RAID controller; tenth controller
  1821. 0 = /dev/rd/c9d0 First disk, whole disk
  1822. 8 = /dev/rd/c9d1 Second disk, whole disk
  1823. ...
  1824. 248 = /dev/rd/c9d31 32nd disk, whole disk
  1825. Partitions are handled as for major 48.
  1826. 138 block Mylex DAC960 PCI RAID controller; eleventh controller
  1827. 0 = /dev/rd/c10d0 First disk, whole disk
  1828. 8 = /dev/rd/c10d1 Second disk, whole disk
  1829. ...
  1830. 248 = /dev/rd/c10d31 32nd disk, whole disk
  1831. Partitions are handled as for major 48.
  1832. 139 block Mylex DAC960 PCI RAID controller; twelfth controller
  1833. 0 = /dev/rd/c11d0 First disk, whole disk
  1834. 8 = /dev/rd/c11d1 Second disk, whole disk
  1835. ...
  1836. 248 = /dev/rd/c11d31 32nd disk, whole disk
  1837. Partitions are handled as for major 48.
  1838. 140 block Mylex DAC960 PCI RAID controller; thirteenth controller
  1839. 0 = /dev/rd/c12d0 First disk, whole disk
  1840. 8 = /dev/rd/c12d1 Second disk, whole disk
  1841. ...
  1842. 248 = /dev/rd/c12d31 32nd disk, whole disk
  1843. Partitions are handled as for major 48.
  1844. 141 block Mylex DAC960 PCI RAID controller; fourteenth controller
  1845. 0 = /dev/rd/c13d0 First disk, whole disk
  1846. 8 = /dev/rd/c13d1 Second disk, whole disk
  1847. ...
  1848. 248 = /dev/rd/c13d31 32nd disk, whole disk
  1849. Partitions are handled as for major 48.
  1850. 142 block Mylex DAC960 PCI RAID controller; fifteenth controller
  1851. 0 = /dev/rd/c14d0 First disk, whole disk
  1852. 8 = /dev/rd/c14d1 Second disk, whole disk
  1853. ...
  1854. 248 = /dev/rd/c14d31 32nd disk, whole disk
  1855. Partitions are handled as for major 48.
  1856. 143 block Mylex DAC960 PCI RAID controller; sixteenth controller
  1857. 0 = /dev/rd/c15d0 First disk, whole disk
  1858. 8 = /dev/rd/c15d1 Second disk, whole disk
  1859. ...
  1860. 248 = /dev/rd/c15d31 32nd disk, whole disk
  1861. Partitions are handled as for major 48.
  1862. 144 char Encapsulated PPP
  1863. 0 = /dev/pppox0 First PPP over Ethernet
  1864. ...
  1865. 63 = /dev/pppox63 64th PPP over Ethernet
  1866. This is primarily used for ADSL.
  1867. The SST 5136-DN DeviceNet interface driver has been
  1868. relocated to major 183 due to an unfortunate conflict.
  1869. 144 block Expansion Area #1 for more non-device (e.g. NFS) mounts
  1870. 0 = mounted device 256
  1871. 255 = mounted device 511
  1872. 145 char SAM9407-based soundcard
  1873. 0 = /dev/sam0_mixer
  1874. 1 = /dev/sam0_sequencer
  1875. 2 = /dev/sam0_midi00
  1876. 3 = /dev/sam0_dsp
  1877. 4 = /dev/sam0_audio
  1878. 6 = /dev/sam0_sndstat
  1879. 18 = /dev/sam0_midi01
  1880. 34 = /dev/sam0_midi02
  1881. 50 = /dev/sam0_midi03
  1882. 64 = /dev/sam1_mixer
  1883. ...
  1884. 128 = /dev/sam2_mixer
  1885. ...
  1886. 192 = /dev/sam3_mixer
  1887. ...
  1888. Device functions match OSS, but offer a number of
  1889. addons, which are sam9407 specific. OSS can be
  1890. operated simultaneously, taking care of the codec.
  1891. 145 block Expansion Area #2 for more non-device (e.g. NFS) mounts
  1892. 0 = mounted device 512
  1893. 255 = mounted device 767
  1894. 146 char SYSTRAM SCRAMNet mirrored-memory network
  1895. 0 = /dev/scramnet0 First SCRAMNet device
  1896. 1 = /dev/scramnet1 Second SCRAMNet device
  1897. ...
  1898. 146 block Expansion Area #3 for more non-device (e.g. NFS) mounts
  1899. 0 = mounted device 768
  1900. 255 = mounted device 1023
  1901. 147 char Aureal Semiconductor Vortex Audio device
  1902. 0 = /dev/aureal0 First Aureal Vortex
  1903. 1 = /dev/aureal1 Second Aureal Vortex
  1904. ...
  1905. 147 block Distributed Replicated Block Device (DRBD)
  1906. 0 = /dev/drbd0 First DRBD device
  1907. 1 = /dev/drbd1 Second DRBD device
  1908. ...
  1909. 148 char Technology Concepts serial card
  1910. 0 = /dev/ttyT0 First TCL port
  1911. 1 = /dev/ttyT1 Second TCL port
  1912. ...
  1913. 149 char Technology Concepts serial card - alternate devices
  1914. 0 = /dev/cut0 Callout device for ttyT0
  1915. 1 = /dev/cut0 Callout device for ttyT1
  1916. ...
  1917. 150 char Real-Time Linux FIFOs
  1918. 0 = /dev/rtf0 First RTLinux FIFO
  1919. 1 = /dev/rtf1 Second RTLinux FIFO
  1920. ...
  1921. 151 char DPT I2O SmartRaid V controller
  1922. 0 = /dev/dpti0 First DPT I2O adapter
  1923. 1 = /dev/dpti1 Second DPT I2O adapter
  1924. ...
  1925. 152 char EtherDrive Control Device
  1926. 0 = /dev/etherd/ctl Connect/Disconnect an EtherDrive
  1927. 1 = /dev/etherd/err Monitor errors
  1928. 2 = /dev/etherd/raw Raw AoE packet monitor
  1929. 152 block EtherDrive Block Devices
  1930. 0 = /dev/etherd/0 EtherDrive 0
  1931. ...
  1932. 255 = /dev/etherd/255 EtherDrive 255
  1933. 153 char SPI Bus Interface (sometimes referred to as MicroWire)
  1934. 0 = /dev/spi0 First SPI device on the bus
  1935. 1 = /dev/spi1 Second SPI device on the bus
  1936. ...
  1937. 15 = /dev/spi15 Sixteenth SPI device on the bus
  1938. 153 block Enhanced Metadisk RAID (EMD) storage units
  1939. 0 = /dev/emd/0 First unit
  1940. 1 = /dev/emd/0p1 Partition 1 on First unit
  1941. 2 = /dev/emd/0p2 Partition 2 on First unit
  1942. ...
  1943. 15 = /dev/emd/0p15 Partition 15 on First unit
  1944. 16 = /dev/emd/1 Second unit
  1945. 32 = /dev/emd/2 Third unit
  1946. ...
  1947. 240 = /dev/emd/15 Sixteenth unit
  1948. Partitions are handled in the same way as for IDE
  1949. disks (see major number 3) except that the limit on
  1950. partitions is 15.
  1951. 154 char Specialix RIO serial card
  1952. 0 = /dev/ttySR0 First RIO port
  1953. ...
  1954. 255 = /dev/ttySR255 256th RIO port
  1955. 155 char Specialix RIO serial card - alternate devices
  1956. 0 = /dev/cusr0 Callout device for ttySR0
  1957. ...
  1958. 255 = /dev/cusr255 Callout device for ttySR255
  1959. 156 char Specialix RIO serial card
  1960. 0 = /dev/ttySR256 257th RIO port
  1961. ...
  1962. 255 = /dev/ttySR511 512th RIO port
  1963. 157 char Specialix RIO serial card - alternate devices
  1964. 0 = /dev/cusr256 Callout device for ttySR256
  1965. ...
  1966. 255 = /dev/cusr511 Callout device for ttySR511
  1967. 158 char Dialogic GammaLink fax driver
  1968. 0 = /dev/gfax0 GammaLink channel 0
  1969. 1 = /dev/gfax1 GammaLink channel 1
  1970. ...
  1971. 159 char RESERVED
  1972. 159 block RESERVED
  1973. 160 char General Purpose Instrument Bus (GPIB)
  1974. 0 = /dev/gpib0 First GPIB bus
  1975. 1 = /dev/gpib1 Second GPIB bus
  1976. ...
  1977. 160 block Carmel 8-port SATA Disks on First Controller
  1978. 0 = /dev/carmel/0 SATA disk 0 whole disk
  1979. 1 = /dev/carmel/0p1 SATA disk 0 partition 1
  1980. ...
  1981. 31 = /dev/carmel/0p31 SATA disk 0 partition 31
  1982. 32 = /dev/carmel/1 SATA disk 1 whole disk
  1983. 64 = /dev/carmel/2 SATA disk 2 whole disk
  1984. ...
  1985. 224 = /dev/carmel/7 SATA disk 7 whole disk
  1986. Partitions are handled in the same way as for IDE
  1987. disks (see major number 3) except that the limit on
  1988. partitions is 31.
  1989. 161 char IrCOMM devices (IrDA serial/parallel emulation)
  1990. 0 = /dev/ircomm0 First IrCOMM device
  1991. 1 = /dev/ircomm1 Second IrCOMM device
  1992. ...
  1993. 16 = /dev/irlpt0 First IrLPT device
  1994. 17 = /dev/irlpt1 Second IrLPT device
  1995. ...
  1996. 161 block Carmel 8-port SATA Disks on Second Controller
  1997. 0 = /dev/carmel/8 SATA disk 8 whole disk
  1998. 1 = /dev/carmel/8p1 SATA disk 8 partition 1
  1999. ...
  2000. 31 = /dev/carmel/8p31 SATA disk 8 partition 31
  2001. 32 = /dev/carmel/9 SATA disk 9 whole disk
  2002. 64 = /dev/carmel/10 SATA disk 10 whole disk
  2003. ...
  2004. 224 = /dev/carmel/15 SATA disk 15 whole disk
  2005. Partitions are handled in the same way as for IDE
  2006. disks (see major number 3) except that the limit on
  2007. partitions is 31.
  2008. 162 char Raw block device interface
  2009. 0 = /dev/rawctl Raw I/O control device
  2010. 1 = /dev/raw/raw1 First raw I/O device
  2011. 2 = /dev/raw/raw2 Second raw I/O device
  2012. ...
  2013. 163 char UNASSIGNED (was Radio Tech BIM-XXX-RS232 radio modem - see 51)
  2014. 164 char Chase Research AT/PCI-Fast serial card
  2015. 0 = /dev/ttyCH0 AT/PCI-Fast board 0, port 0
  2016. ...
  2017. 15 = /dev/ttyCH15 AT/PCI-Fast board 0, port 15
  2018. 16 = /dev/ttyCH16 AT/PCI-Fast board 1, port 0
  2019. ...
  2020. 31 = /dev/ttyCH31 AT/PCI-Fast board 1, port 15
  2021. 32 = /dev/ttyCH32 AT/PCI-Fast board 2, port 0
  2022. ...
  2023. 47 = /dev/ttyCH47 AT/PCI-Fast board 2, port 15
  2024. 48 = /dev/ttyCH48 AT/PCI-Fast board 3, port 0
  2025. ...
  2026. 63 = /dev/ttyCH63 AT/PCI-Fast board 3, port 15
  2027. 165 char Chase Research AT/PCI-Fast serial card - alternate devices
  2028. 0 = /dev/cuch0 Callout device for ttyCH0
  2029. ...
  2030. 63 = /dev/cuch63 Callout device for ttyCH63
  2031. 166 char ACM USB modems
  2032. 0 = /dev/ttyACM0 First ACM modem
  2033. 1 = /dev/ttyACM1 Second ACM modem
  2034. ...
  2035. 167 char ACM USB modems - alternate devices
  2036. 0 = /dev/cuacm0 Callout device for ttyACM0
  2037. 1 = /dev/cuacm1 Callout device for ttyACM1
  2038. ...
  2039. 168 char Eracom CSA7000 PCI encryption adaptor
  2040. 0 = /dev/ecsa0 First CSA7000
  2041. 1 = /dev/ecsa1 Second CSA7000
  2042. ...
  2043. 169 char Eracom CSA8000 PCI encryption adaptor
  2044. 0 = /dev/ecsa8-0 First CSA8000
  2045. 1 = /dev/ecsa8-1 Second CSA8000
  2046. ...
  2047. 170 char AMI MegaRAC remote access controller
  2048. 0 = /dev/megarac0 First MegaRAC card
  2049. 1 = /dev/megarac1 Second MegaRAC card
  2050. ...
  2051. 171 char Reserved for IEEE 1394 (Firewire)
  2052. 172 char Moxa Intellio serial card
  2053. 0 = /dev/ttyMX0 First Moxa port
  2054. 1 = /dev/ttyMX1 Second Moxa port
  2055. ...
  2056. 127 = /dev/ttyMX127 128th Moxa port
  2057. 128 = /dev/moxactl Moxa control port
  2058. 173 char Moxa Intellio serial card - alternate devices
  2059. 0 = /dev/cumx0 Callout device for ttyMX0
  2060. 1 = /dev/cumx1 Callout device for ttyMX1
  2061. ...
  2062. 127 = /dev/cumx127 Callout device for ttyMX127
  2063. 174 char SmartIO serial card
  2064. 0 = /dev/ttySI0 First SmartIO port
  2065. 1 = /dev/ttySI1 Second SmartIO port
  2066. ...
  2067. 175 char SmartIO serial card - alternate devices
  2068. 0 = /dev/cusi0 Callout device for ttySI0
  2069. 1 = /dev/cusi1 Callout device for ttySI1
  2070. ...
  2071. 176 char nCipher nFast PCI crypto accelerator
  2072. 0 = /dev/nfastpci0 First nFast PCI device
  2073. 1 = /dev/nfastpci1 First nFast PCI device
  2074. ...
  2075. 177 char TI PCILynx memory spaces
  2076. 0 = /dev/pcilynx/aux0 AUX space of first PCILynx card
  2077. ...
  2078. 15 = /dev/pcilynx/aux15 AUX space of 16th PCILynx card
  2079. 16 = /dev/pcilynx/rom0 ROM space of first PCILynx card
  2080. ...
  2081. 31 = /dev/pcilynx/rom15 ROM space of 16th PCILynx card
  2082. 32 = /dev/pcilynx/ram0 RAM space of first PCILynx card
  2083. ...
  2084. 47 = /dev/pcilynx/ram15 RAM space of 16th PCILynx card
  2085. 178 char Giganet cLAN1xxx virtual interface adapter
  2086. 0 = /dev/clanvi0 First cLAN adapter
  2087. 1 = /dev/clanvi1 Second cLAN adapter
  2088. ...
  2089. 179 char CCube DVXChip-based PCI products
  2090. 0 = /dev/dvxirq0 First DVX device
  2091. 1 = /dev/dvxirq1 Second DVX device
  2092. ...
  2093. 180 char USB devices
  2094. 0 = /dev/usb/lp0 First USB printer
  2095. ...
  2096. 15 = /dev/usb/lp15 16th USB printer
  2097. 16 = /dev/usb/mouse0 First USB mouse
  2098. ...
  2099. 31 = /dev/usb/mouse15 16th USB mouse
  2100. 32 = /dev/usb/ez0 First USB firmware loader
  2101. ...
  2102. 47 = /dev/usb/ez15 16th USB firmware loader
  2103. 48 = /dev/usb/scanner0 First USB scanner
  2104. ...
  2105. 63 = /dev/usb/scanner15 16th USB scanner
  2106. 64 = /dev/usb/rio500 Diamond Rio 500
  2107. 65 = /dev/usb/usblcd USBLCD Interface (info@usblcd.de)
  2108. 66 = /dev/usb/cpad0 Synaptics cPad (mouse/LCD)
  2109. 180 block USB block devices
  2110. 0 = /dev/uba First USB block device
  2111. 8 = /dev/ubb Second USB block device
  2112. 16 = /dev/ubc Thrid USB block device
  2113. ...
  2114. 181 char Conrad Electronic parallel port radio clocks
  2115. 0 = /dev/pcfclock0 First Conrad radio clock
  2116. 1 = /dev/pcfclock1 Second Conrad radio clock
  2117. ...
  2118. 182 char Picture Elements THR2 binarizer
  2119. 0 = /dev/pethr0 First THR2 board
  2120. 1 = /dev/pethr1 Second THR2 board
  2121. ...
  2122. 183 char SST 5136-DN DeviceNet interface
  2123. 0 = /dev/ss5136dn0 First DeviceNet interface
  2124. 1 = /dev/ss5136dn1 Second DeviceNet interface
  2125. ...
  2126. This device used to be assigned to major number 144.
  2127. It had to be moved due to an unfortunate conflict.
  2128. 184 char Picture Elements' video simulator/sender
  2129. 0 = /dev/pevss0 First sender board
  2130. 1 = /dev/pevss1 Second sender board
  2131. ...
  2132. 185 char InterMezzo high availability file system
  2133. 0 = /dev/intermezzo0 First cache manager
  2134. 1 = /dev/intermezzo1 Second cache manager
  2135. ...
  2136. See http://www.inter-mezzo.org/ for more information.
  2137. 186 char Object-based storage control device
  2138. 0 = /dev/obd0 First obd control device
  2139. 1 = /dev/obd1 Second obd control device
  2140. ...
  2141. See ftp://ftp.lustre.org/pub/obd for code and information.
  2142. 187 char DESkey hardware encryption device
  2143. 0 = /dev/deskey0 First DES key
  2144. 1 = /dev/deskey1 Second DES key
  2145. ...
  2146. 188 char USB serial converters
  2147. 0 = /dev/ttyUSB0 First USB serial converter
  2148. 1 = /dev/ttyUSB1 Second USB serial converter
  2149. ...
  2150. 189 char USB serial converters - alternate devices
  2151. 0 = /dev/cuusb0 Callout device for ttyUSB0
  2152. 1 = /dev/cuusb1 Callout device for ttyUSB1
  2153. ...
  2154. 190 char Kansas City tracker/tuner card
  2155. 0 = /dev/kctt0 First KCT/T card
  2156. 1 = /dev/kctt1 Second KCT/T card
  2157. ...
  2158. 191 char Reserved for PCMCIA
  2159. 192 char Kernel profiling interface
  2160. 0 = /dev/profile Profiling control device
  2161. 1 = /dev/profile0 Profiling device for CPU 0
  2162. 2 = /dev/profile1 Profiling device for CPU 1
  2163. ...
  2164. 193 char Kernel event-tracing interface
  2165. 0 = /dev/trace Tracing control device
  2166. 1 = /dev/trace0 Tracing device for CPU 0
  2167. 2 = /dev/trace1 Tracing device for CPU 1
  2168. ...
  2169. 194 char linVideoStreams (LINVS)
  2170. 0 = /dev/mvideo/status0 Video compression status
  2171. 1 = /dev/mvideo/stream0 Video stream
  2172. 2 = /dev/mvideo/frame0 Single compressed frame
  2173. 3 = /dev/mvideo/rawframe0 Raw uncompressed frame
  2174. 4 = /dev/mvideo/codec0 Direct codec access
  2175. 5 = /dev/mvideo/video4linux0 Video4Linux compatibility
  2176. 16 = /dev/mvideo/status1 Second device
  2177. ...
  2178. 32 = /dev/mvideo/status2 Third device
  2179. ...
  2180. ...
  2181. 240 = /dev/mvideo/status15 16th device
  2182. ...
  2183. 195 char Nvidia graphics devices
  2184. 0 = /dev/nvidia0 First Nvidia card
  2185. 1 = /dev/nvidia1 Second Nvidia card
  2186. ...
  2187. 255 = /dev/nvidiactl Nvidia card control device
  2188. 196 char Tormenta T1 card
  2189. 0 = /dev/tor/0 Master control channel for all cards
  2190. 1 = /dev/tor/1 First DS0
  2191. 2 = /dev/tor/2 Second DS0
  2192. ...
  2193. 48 = /dev/tor/48 48th DS0
  2194. 49 = /dev/tor/49 First pseudo-channel
  2195. 50 = /dev/tor/50 Second pseudo-channel
  2196. ...
  2197. 197 char OpenTNF tracing facility
  2198. 0 = /dev/tnf/t0 Trace 0 data extraction
  2199. 1 = /dev/tnf/t1 Trace 1 data extraction
  2200. ...
  2201. 128 = /dev/tnf/status Tracing facility status
  2202. 130 = /dev/tnf/trace Tracing device
  2203. 198 char Total Impact TPMP2 quad coprocessor PCI card
  2204. 0 = /dev/tpmp2/0 First card
  2205. 1 = /dev/tpmp2/1 Second card
  2206. ...
  2207. 199 char Veritas volume manager (VxVM) volumes
  2208. 0 = /dev/vx/rdsk/*/* First volume
  2209. 1 = /dev/vx/rdsk/*/* Second volume
  2210. ...
  2211. 199 block Veritas volume manager (VxVM) volumes
  2212. 0 = /dev/vx/dsk/*/* First volume
  2213. 1 = /dev/vx/dsk/*/* Second volume
  2214. ...
  2215. The namespace in these directories is maintained by
  2216. the user space VxVM software.
  2217. 200 char Veritas VxVM configuration interface
  2218. 0 = /dev/vx/config Configuration access node
  2219. 1 = /dev/vx/trace Volume i/o trace access node
  2220. 2 = /dev/vx/iod Volume i/o daemon access node
  2221. 3 = /dev/vx/info Volume information access node
  2222. 4 = /dev/vx/task Volume tasks access node
  2223. 5 = /dev/vx/taskmon Volume tasks monitor daemon
  2224. 201 char Veritas VxVM dynamic multipathing driver
  2225. 0 = /dev/vx/rdmp/* First multipath device
  2226. 1 = /dev/vx/rdmp/* Second multipath device
  2227. ...
  2228. 201 block Veritas VxVM dynamic multipathing driver
  2229. 0 = /dev/vx/dmp/* First multipath device
  2230. 1 = /dev/vx/dmp/* Second multipath device
  2231. ...
  2232. The namespace in these directories is maintained by
  2233. the user space VxVM software.
  2234. 202 char CPU model-specific registers
  2235. 0 = /dev/cpu/0/msr MSRs on CPU 0
  2236. 1 = /dev/cpu/1/msr MSRs on CPU 1
  2237. ...
  2238. 203 char CPU CPUID information
  2239. 0 = /dev/cpu/0/cpuid CPUID on CPU 0
  2240. 1 = /dev/cpu/1/cpuid CPUID on CPU 1
  2241. ...
  2242. 204 char Low-density serial ports
  2243. 0 = /dev/ttyLU0 LinkUp Systems L72xx UART - port 0
  2244. 1 = /dev/ttyLU1 LinkUp Systems L72xx UART - port 1
  2245. 2 = /dev/ttyLU2 LinkUp Systems L72xx UART - port 2
  2246. 3 = /dev/ttyLU3 LinkUp Systems L72xx UART - port 3
  2247. 4 = /dev/ttyFB0 Intel Footbridge (ARM)
  2248. 5 = /dev/ttySA0 StrongARM builtin serial port 0
  2249. 6 = /dev/ttySA1 StrongARM builtin serial port 1
  2250. 7 = /dev/ttySA2 StrongARM builtin serial port 2
  2251. 8 = /dev/ttySC0 SCI serial port (SuperH) - port 0
  2252. 9 = /dev/ttySC1 SCI serial port (SuperH) - port 1
  2253. 10 = /dev/ttySC2 SCI serial port (SuperH) - port 2
  2254. 11 = /dev/ttySC3 SCI serial port (SuperH) - port 3
  2255. 12 = /dev/ttyFW0 Firmware console - port 0
  2256. 13 = /dev/ttyFW1 Firmware console - port 1
  2257. 14 = /dev/ttyFW2 Firmware console - port 2
  2258. 15 = /dev/ttyFW3 Firmware console - port 3
  2259. 16 = /dev/ttyAM0 ARM "AMBA" serial port 0
  2260. ...
  2261. 31 = /dev/ttyAM15 ARM "AMBA" serial port 15
  2262. 32 = /dev/ttyDB0 DataBooster serial port 0
  2263. ...
  2264. 39 = /dev/ttyDB7 DataBooster serial port 7
  2265. 40 = /dev/ttySG0 SGI Altix console port
  2266. 41 = /dev/ttySMX0 Motorola i.MX - port 0
  2267. 42 = /dev/ttySMX1 Motorola i.MX - port 1
  2268. 43 = /dev/ttySMX2 Motorola i.MX - port 2
  2269. 44 = /dev/ttyMM0 Marvell MPSC - port 0
  2270. 45 = /dev/ttyMM1 Marvell MPSC - port 1
  2271. 46 = /dev/ttyCPM0 PPC CPM (SCC or SMC) - port 0
  2272. ...
  2273. 47 = /dev/ttyCPM5 PPC CPM (SCC or SMC) - port 5
  2274. 50 = /dev/ttyIOC40 Altix serial card
  2275. ...
  2276. 81 = /dev/ttyIOC431 Altix serial card
  2277. 82 = /dev/ttyVR0 NEC VR4100 series SIU
  2278. 83 = /dev/ttyVR1 NEC VR4100 series DSIU
  2279. 205 char Low-density serial ports (alternate device)
  2280. 0 = /dev/culu0 Callout device for ttyLU0
  2281. 1 = /dev/culu1 Callout device for ttyLU1
  2282. 2 = /dev/culu2 Callout device for ttyLU2
  2283. 3 = /dev/culu3 Callout device for ttyLU3
  2284. 4 = /dev/cufb0 Callout device for ttyFB0
  2285. 5 = /dev/cusa0 Callout device for ttySA0
  2286. 6 = /dev/cusa1 Callout device for ttySA1
  2287. 7 = /dev/cusa2 Callout device for ttySA2
  2288. 8 = /dev/cusc0 Callout device for ttySC0
  2289. 9 = /dev/cusc1 Callout device for ttySC1
  2290. 10 = /dev/cusc2 Callout device for ttySC2
  2291. 11 = /dev/cusc3 Callout device for ttySC3
  2292. 12 = /dev/cufw0 Callout device for ttyFW0
  2293. 13 = /dev/cufw1 Callout device for ttyFW1
  2294. 14 = /dev/cufw2 Callout device for ttyFW2
  2295. 15 = /dev/cufw3 Callout device for ttyFW3
  2296. 16 = /dev/cuam0 Callout device for ttyAM0
  2297. ...
  2298. 31 = /dev/cuam15 Callout device for ttyAM15
  2299. 32 = /dev/cudb0 Callout device for ttyDB0
  2300. ...
  2301. 39 = /dev/cudb7 Callout device for ttyDB7
  2302. 40 = /dev/cusg0 Callout device for ttySG0
  2303. 41 = /dev/ttycusmx0 Callout device for ttySMX0
  2304. 42 = /dev/ttycusmx1 Callout device for ttySMX1
  2305. 43 = /dev/ttycusmx2 Callout device for ttySMX2
  2306. 46 = /dev/cucpm0 Callout device for ttyCPM0
  2307. ...
  2308. 49 = /dev/cucpm5 Callout device for ttyCPM5
  2309. 50 = /dev/cuioc40 Callout device for ttyIOC40
  2310. ...
  2311. 81 = /dev/cuioc431 Callout device for ttyIOC431
  2312. 82 = /dev/cuvr0 Callout device for ttyVR0
  2313. 83 = /dev/cuvr1 Callout device for ttyVR1
  2314. 206 char OnStream SC-x0 tape devices
  2315. 0 = /dev/osst0 First OnStream SCSI tape, mode 0
  2316. 1 = /dev/osst1 Second OnStream SCSI tape, mode 0
  2317. ...
  2318. 32 = /dev/osst0l First OnStream SCSI tape, mode 1
  2319. 33 = /dev/osst1l Second OnStream SCSI tape, mode 1
  2320. ...
  2321. 64 = /dev/osst0m First OnStream SCSI tape, mode 2
  2322. 65 = /dev/osst1m Second OnStream SCSI tape, mode 2
  2323. ...
  2324. 96 = /dev/osst0a First OnStream SCSI tape, mode 3
  2325. 97 = /dev/osst1a Second OnStream SCSI tape, mode 3
  2326. ...
  2327. 128 = /dev/nosst0 No rewind version of /dev/osst0
  2328. 129 = /dev/nosst1 No rewind version of /dev/osst1
  2329. ...
  2330. 160 = /dev/nosst0l No rewind version of /dev/osst0l
  2331. 161 = /dev/nosst1l No rewind version of /dev/osst1l
  2332. ...
  2333. 192 = /dev/nosst0m No rewind version of /dev/osst0m
  2334. 193 = /dev/nosst1m No rewind version of /dev/osst1m
  2335. ...
  2336. 224 = /dev/nosst0a No rewind version of /dev/osst0a
  2337. 225 = /dev/nosst1a No rewind version of /dev/osst1a
  2338. ...
  2339. The OnStream SC-x0 SCSI tapes do not support the
  2340. standard SCSI SASD command set and therefore need
  2341. their own driver "osst". Note that the IDE, USB (and
  2342. maybe ParPort) versions may be driven via ide-scsi or
  2343. usb-storage SCSI emulation and this osst device and
  2344. driver as well. The ADR-x0 drives are QIC-157
  2345. compliant and don't need osst.
  2346. 207 char Compaq ProLiant health feature indicate
  2347. 0 = /dev/cpqhealth/cpqw Redirector interface
  2348. 1 = /dev/cpqhealth/crom EISA CROM
  2349. 2 = /dev/cpqhealth/cdt Data Table
  2350. 3 = /dev/cpqhealth/cevt Event Log
  2351. 4 = /dev/cpqhealth/casr Automatic Server Recovery
  2352. 5 = /dev/cpqhealth/cecc ECC Memory
  2353. 6 = /dev/cpqhealth/cmca Machine Check Architecture
  2354. 7 = /dev/cpqhealth/ccsm Deprecated CDT
  2355. 8 = /dev/cpqhealth/cnmi NMI Handling
  2356. 9 = /dev/cpqhealth/css Sideshow Management
  2357. 10 = /dev/cpqhealth/cram CMOS interface
  2358. 11 = /dev/cpqhealth/cpci PCI IRQ interface
  2359. 208 char User space serial ports
  2360. 0 = /dev/ttyU0 First user space serial port
  2361. 1 = /dev/ttyU1 Second user space serial port
  2362. ...
  2363. 209 char User space serial ports (alternate devices)
  2364. 0 = /dev/cuu0 Callout device for ttyU0
  2365. 1 = /dev/cuu1 Callout device for ttyU1
  2366. ...
  2367. 210 char SBE, Inc. sync/async serial card
  2368. 0 = /dev/sbei/wxcfg0 Configuration device for board 0
  2369. 1 = /dev/sbei/dld0 Download device for board 0
  2370. 2 = /dev/sbei/wan00 WAN device, port 0, board 0
  2371. 3 = /dev/sbei/wan01 WAN device, port 1, board 0
  2372. 4 = /dev/sbei/wan02 WAN device, port 2, board 0
  2373. 5 = /dev/sbei/wan03 WAN device, port 3, board 0
  2374. 6 = /dev/sbei/wanc00 WAN clone device, port 0, board 0
  2375. 7 = /dev/sbei/wanc01 WAN clone device, port 1, board 0
  2376. 8 = /dev/sbei/wanc02 WAN clone device, port 2, board 0
  2377. 9 = /dev/sbei/wanc03 WAN clone device, port 3, board 0
  2378. 10 = /dev/sbei/wxcfg1 Configuration device for board 1
  2379. 11 = /dev/sbei/dld1 Download device for board 1
  2380. 12 = /dev/sbei/wan10 WAN device, port 0, board 1
  2381. 13 = /dev/sbei/wan11 WAN device, port 1, board 1
  2382. 14 = /dev/sbei/wan12 WAN device, port 2, board 1
  2383. 15 = /dev/sbei/wan13 WAN device, port 3, board 1
  2384. 16 = /dev/sbei/wanc10 WAN clone device, port 0, board 1
  2385. 17 = /dev/sbei/wanc11 WAN clone device, port 1, board 1
  2386. 18 = /dev/sbei/wanc12 WAN clone device, port 2, board 1
  2387. 19 = /dev/sbei/wanc13 WAN clone device, port 3, board 1
  2388. ...
  2389. Yes, each board is really spaced 10 (decimal) apart.
  2390. 211 char Addinum CPCI1500 digital I/O card
  2391. 0 = /dev/addinum/cpci1500/0 First CPCI1500 card
  2392. 1 = /dev/addinum/cpci1500/1 Second CPCI1500 card
  2393. ...
  2394. 212 char LinuxTV.org DVB driver subsystem
  2395. 0 = /dev/dvb/adapter0/video0 first video decoder of first card
  2396. 1 = /dev/dvb/adapter0/audio0 first audio decoder of first card
  2397. 2 = /dev/dvb/adapter0/sec0 (obsolete/unused)
  2398. 3 = /dev/dvb/adapter0/frontend0 first frontend device of first card
  2399. 4 = /dev/dvb/adapter0/demux0 first demux device of first card
  2400. 5 = /dev/dvb/adapter0/dvr0 first digital video recoder device of first card
  2401. 6 = /dev/dvb/adapter0/ca0 first common access port of first card
  2402. 7 = /dev/dvb/adapter0/net0 first network device of first card
  2403. 8 = /dev/dvb/adapter0/osd0 first on-screen-display device of first card
  2404. 9 = /dev/dvb/adapter0/video1 second video decoder of first card
  2405. ...
  2406. 64 = /dev/dvb/adapter1/video0 first video decoder of second card
  2407. ...
  2408. 128 = /dev/dvb/adapter2/video0 first video decoder of third card
  2409. ...
  2410. 196 = /dev/dvb/adapter3/video0 first video decoder of fourth card
  2411. 216 char Bluetooth RFCOMM TTY devices
  2412. 0 = /dev/rfcomm0 First Bluetooth RFCOMM TTY device
  2413. 1 = /dev/rfcomm1 Second Bluetooth RFCOMM TTY device
  2414. ...
  2415. 217 char Bluetooth RFCOMM TTY devices (alternate devices)
  2416. 0 = /dev/curf0 Callout device for rfcomm0
  2417. 1 = /dev/curf1 Callout device for rfcomm1
  2418. ...
  2419. 218 char The Logical Company bus Unibus/Qbus adapters
  2420. 0 = /dev/logicalco/bci/0 First bus adapter
  2421. 1 = /dev/logicalco/bci/1 First bus adapter
  2422. ...
  2423. 219 char The Logical Company DCI-1300 digital I/O card
  2424. 0 = /dev/logicalco/dci1300/0 First DCI-1300 card
  2425. 1 = /dev/logicalco/dci1300/1 Second DCI-1300 card
  2426. ...
  2427. 220 char Myricom Myrinet "GM" board
  2428. 0 = /dev/myricom/gm0 First Myrinet GM board
  2429. 1 = /dev/myricom/gmp0 First board "root access"
  2430. 2 = /dev/myricom/gm1 Second Myrinet GM board
  2431. 3 = /dev/myricom/gmp1 Second board "root access"
  2432. ...
  2433. 221 char VME bus
  2434. 0 = /dev/bus/vme/m0 First master image
  2435. 1 = /dev/bus/vme/m1 Second master image
  2436. 2 = /dev/bus/vme/m2 Third master image
  2437. 3 = /dev/bus/vme/m3 Fourth master image
  2438. 4 = /dev/bus/vme/s0 First slave image
  2439. 5 = /dev/bus/vme/s1 Second slave image
  2440. 6 = /dev/bus/vme/s2 Third slave image
  2441. 7 = /dev/bus/vme/s3 Fourth slave image
  2442. 8 = /dev/bus/vme/ctl Control
  2443. It is expected that all VME bus drivers will use the
  2444. same interface. For interface documentation see
  2445. http://www.vmelinux.org/.
  2446. 224 char A2232 serial card
  2447. 0 = /dev/ttyY0 First A2232 port
  2448. 1 = /dev/ttyY1 Second A2232 port
  2449. ...
  2450. 225 char A2232 serial card (alternate devices)
  2451. 0 = /dev/cuy0 Callout device for ttyY0
  2452. 1 = /dev/cuy1 Callout device for ttyY1
  2453. ...
  2454. 226 char Direct Rendering Infrastructure (DRI)
  2455. 0 = /dev/dri/card0 First graphics card
  2456. 1 = /dev/dri/card1 Second graphics card
  2457. ...
  2458. 227 char IBM 3270 terminal Unix tty access
  2459. 1 = /dev/3270/tty1 First 3270 terminal
  2460. 2 = /dev/3270/tty2 Seconds 3270 terminal
  2461. ...
  2462. 228 char IBM 3270 terminal block-mode access
  2463. 0 = /dev/3270/tub Controlling interface
  2464. 1 = /dev/3270/tub1 First 3270 terminal
  2465. 2 = /dev/3270/tub2 Second 3270 terminal
  2466. ...
  2467. 229 char IBM iSeries virtual console
  2468. 0 = /dev/iseries/vtty0 First console port
  2469. 1 = /dev/iseries/vtty1 Second console port
  2470. ...
  2471. 230 char IBM iSeries virtual tape
  2472. 0 = /dev/iseries/vt0 First virtual tape, mode 0
  2473. 1 = /dev/iseries/vt1 Second virtual tape, mode 0
  2474. ...
  2475. 32 = /dev/iseries/vt0l First virtual tape, mode 1
  2476. 33 = /dev/iseries/vt1l Second virtual tape, mode 1
  2477. ...
  2478. 64 = /dev/iseries/vt0m First virtual tape, mode 2
  2479. 65 = /dev/iseries/vt1m Second virtual tape, mode 2
  2480. ...
  2481. 96 = /dev/iseries/vt0a First virtual tape, mode 3
  2482. 97 = /dev/iseries/vt1a Second virtual tape, mode 3
  2483. ...
  2484. 128 = /dev/iseries/nvt0 First virtual tape, mode 0, no rewind
  2485. 129 = /dev/iseries/nvt1 Second virtual tape, mode 0, no rewind
  2486. ...
  2487. 160 = /dev/iseries/nvt0l First virtual tape, mode 1, no rewind
  2488. 161 = /dev/iseries/nvt1l Second virtual tape, mode 1, no rewind
  2489. ...
  2490. 192 = /dev/iseries/nvt0m First virtual tape, mode 2, no rewind
  2491. 193 = /dev/iseries/nvt1m Second virtual tape, mode 2, no rewind
  2492. ...
  2493. 224 = /dev/iseries/nvt0a First virtual tape, mode 3, no rewind
  2494. 225 = /dev/iseries/nvt1a Second virtual tape, mode 3, no rewind
  2495. ...
  2496. "No rewind" refers to the omission of the default
  2497. automatic rewind on device close. The MTREW or MTOFFL
  2498. ioctl()'s can be used to rewind the tape regardless of
  2499. the device used to access it.
  2500. 231 char InfiniBand MAD
  2501. 0 = /dev/infiniband/umad0
  2502. 1 = /dev/infiniband/umad1
  2503. ...
  2504. 232-239 UNASSIGNED
  2505. 240-254 char LOCAL/EXPERIMENTAL USE
  2506. 240-254 block LOCAL/EXPERIMENTAL USE
  2507. Allocated for local/experimental use. For devices not
  2508. assigned official numbers, these ranges should be
  2509. used in order to avoid conflicting with future assignments.
  2510. 255 char RESERVED
  2511. 255 block RESERVED
  2512. This major is reserved to assist the expansion to a
  2513. larger number space. No device nodes with this major
  2514. should ever be created on the filesystem.
  2515. **** ADDITIONAL /dev DIRECTORY ENTRIES
  2516. This section details additional entries that should or may exist in
  2517. the /dev directory. It is preferred that symbolic links use the same
  2518. form (absolute or relative) as is indicated here. Links are
  2519. classified as "hard" or "symbolic" depending on the preferred type of
  2520. link; if possible, the indicated type of link should be used.
  2521. Compulsory links
  2522. These links should exist on all systems:
  2523. /dev/fd /proc/self/fd symbolic File descriptors
  2524. /dev/stdin fd/0 symbolic stdin file descriptor
  2525. /dev/stdout fd/1 symbolic stdout file descriptor
  2526. /dev/stderr fd/2 symbolic stderr file descriptor
  2527. /dev/nfsd socksys symbolic Required by iBCS-2
  2528. /dev/X0R null symbolic Required by iBCS-2
  2529. Note: /dev/X0R is <letter X>-<digit 0>-<letter R>.
  2530. Recommended links
  2531. It is recommended that these links exist on all systems:
  2532. /dev/core /proc/kcore symbolic Backward compatibility
  2533. /dev/ramdisk ram0 symbolic Backward compatibility
  2534. /dev/ftape qft0 symbolic Backward compatibility
  2535. /dev/bttv0 video0 symbolic Backward compatibility
  2536. /dev/radio radio0 symbolic Backward compatibility
  2537. /dev/i2o* /dev/i2o/* symbolic Backward compatibility
  2538. /dev/scd? sr? hard Alternate SCSI CD-ROM name
  2539. Locally defined links
  2540. The following links may be established locally to conform to the
  2541. configuration of the system. This is merely a tabulation of existing
  2542. practice, and does not constitute a recommendation. However, if they
  2543. exist, they should have the following uses.
  2544. /dev/mouse mouse port symbolic Current mouse device
  2545. /dev/tape tape device symbolic Current tape device
  2546. /dev/cdrom CD-ROM device symbolic Current CD-ROM device
  2547. /dev/cdwriter CD-writer symbolic Current CD-writer device
  2548. /dev/scanner scanner symbolic Current scanner device
  2549. /dev/modem modem port symbolic Current dialout device
  2550. /dev/root root device symbolic Current root filesystem
  2551. /dev/swap swap device symbolic Current swap device
  2552. /dev/modem should not be used for a modem which supports dialin as
  2553. well as dialout, as it tends to cause lock file problems. If it
  2554. exists, /dev/modem should point to the appropriate primary TTY device
  2555. (the use of the alternate callout devices is deprecated).
  2556. For SCSI devices, /dev/tape and /dev/cdrom should point to the
  2557. ``cooked'' devices (/dev/st* and /dev/sr*, respectively), whereas
  2558. /dev/cdwriter and /dev/scanner should point to the appropriate generic
  2559. SCSI devices (/dev/sg*).
  2560. /dev/mouse may point to a primary serial TTY device, a hardware mouse
  2561. device, or a socket for a mouse driver program (e.g. /dev/gpmdata).
  2562. Sockets and pipes
  2563. Non-transient sockets and named pipes may exist in /dev. Common entries are:
  2564. /dev/printer socket lpd local socket
  2565. /dev/log socket syslog local socket
  2566. /dev/gpmdata socket gpm mouse multiplexer
  2567. Mount points
  2568. The following names are reserved for mounting special filesystems
  2569. under /dev. These special filesystems provide kernel interfaces that
  2570. cannot be provided with standard device nodes.
  2571. /dev/pts devpts PTY slave filesystem
  2572. /dev/shm tmpfs POSIX shared memory maintenance access
  2573. **** TERMINAL DEVICES
  2574. Terminal, or TTY devices are a special class of character devices. A
  2575. terminal device is any device that could act as a controlling terminal
  2576. for a session; this includes virtual consoles, serial ports, and
  2577. pseudoterminals (PTYs).
  2578. All terminal devices share a common set of capabilities known as line
  2579. diciplines; these include the common terminal line dicipline as well
  2580. as SLIP and PPP modes.
  2581. All terminal devices are named similarly; this section explains the
  2582. naming and use of the various types of TTYs. Note that the naming
  2583. conventions include several historical warts; some of these are
  2584. Linux-specific, some were inherited from other systems, and some
  2585. reflect Linux outgrowing a borrowed convention.
  2586. A hash mark (#) in a device name is used here to indicate a decimal
  2587. number without leading zeroes.
  2588. Virtual consoles and the console device
  2589. Virtual consoles are full-screen terminal displays on the system video
  2590. monitor. Virtual consoles are named /dev/tty#, with numbering
  2591. starting at /dev/tty1; /dev/tty0 is the current virtual console.
  2592. /dev/tty0 is the device that should be used to access the system video
  2593. card on those architectures for which the frame buffer devices
  2594. (/dev/fb*) are not applicable. Do not use /dev/console
  2595. for this purpose.
  2596. The console device, /dev/console, is the device to which system
  2597. messages should be sent, and on which logins should be permitted in
  2598. single-user mode. Starting with Linux 2.1.71, /dev/console is managed
  2599. by the kernel; for previous versions it should be a symbolic link to
  2600. either /dev/tty0, a specific virtual console such as /dev/tty1, or to
  2601. a serial port primary (tty*, not cu*) device, depending on the
  2602. configuration of the system.
  2603. Serial ports
  2604. Serial ports are RS-232 serial ports and any device which simulates
  2605. one, either in hardware (such as internal modems) or in software (such
  2606. as the ISDN driver.) Under Linux, each serial ports has two device
  2607. names, the primary or callin device and the alternate or callout one.
  2608. Each kind of device is indicated by a different letter. For any
  2609. letter X, the names of the devices are /dev/ttyX# and /dev/cux#,
  2610. respectively; for historical reasons, /dev/ttyS# and /dev/ttyC#
  2611. correspond to /dev/cua# and /dev/cub#. In the future, it should be
  2612. expected that multiple letters will be used; all letters will be upper
  2613. case for the "tty" device (e.g. /dev/ttyDP#) and lower case for the
  2614. "cu" device (e.g. /dev/cudp#).
  2615. The names /dev/ttyQ# and /dev/cuq# are reserved for local use.
  2616. The alternate devices provide for kernel-based exclusion and somewhat
  2617. different defaults than the primary devices. Their main purpose is to
  2618. allow the use of serial ports with programs with no inherent or broken
  2619. support for serial ports. Their use is deprecated, and they may be
  2620. removed from a future version of Linux.
  2621. Arbitration of serial ports is provided by the use of lock files with
  2622. the names /var/lock/LCK..ttyX#. The contents of the lock file should
  2623. be the PID of the locking process as an ASCII number.
  2624. It is common practice to install links such as /dev/modem
  2625. which point to serial ports. In order to ensure proper locking in the
  2626. presence of these links, it is recommended that software chase
  2627. symlinks and lock all possible names; additionally, it is recommended
  2628. that a lock file be installed with the corresponding alternate
  2629. device. In order to avoid deadlocks, it is recommended that the locks
  2630. are acquired in the following order, and released in the reverse:
  2631. 1. The symbolic link name, if any (/var/lock/LCK..modem)
  2632. 2. The "tty" name (/var/lock/LCK..ttyS2)
  2633. 3. The alternate device name (/var/lock/LCK..cua2)
  2634. In the case of nested symbolic links, the lock files should be
  2635. installed in the order the symlinks are resolved.
  2636. Under no circumstances should an application hold a lock while waiting
  2637. for another to be released. In addition, applications which attempt
  2638. to create lock files for the corresponding alternate device names
  2639. should take into account the possibility of being used on a non-serial
  2640. port TTY, for which no alternate device would exist.
  2641. Pseudoterminals (PTYs)
  2642. Pseudoterminals, or PTYs, are used to create login sessions or provide
  2643. other capabilities requiring a TTY line dicipline (including SLIP or
  2644. PPP capability) to arbitrary data-generation processes. Each PTY has
  2645. a master side, named /dev/pty[p-za-e][0-9a-f], and a slave side, named
  2646. /dev/tty[p-za-e][0-9a-f]. The kernel arbitrates the use of PTYs by
  2647. allowing each master side to be opened only once.
  2648. Once the master side has been opened, the corresponding slave device
  2649. can be used in the same manner as any TTY device. The master and
  2650. slave devices are connected by the kernel, generating the equivalent
  2651. of a bidirectional pipe with TTY capabilities.
  2652. Recent versions of the Linux kernels and GNU libc contain support for
  2653. the System V/Unix98 naming scheme for PTYs, which assigns a common
  2654. device, /dev/ptmx, to all the masters (opening it will automatically
  2655. give you a previously unassigned PTY) and a subdirectory, /dev/pts,
  2656. for the slaves; the slaves are named with decimal integers (/dev/pts/#
  2657. in our notation). This removes the problem of exhausting the
  2658. namespace and enables the kernel to automatically create the device
  2659. nodes for the slaves on demand using the "devpts" filesystem.