1 ============= 1 =============
2 Ioctl Numbers 2 Ioctl Numbers
3 ============= 3 =============
4 4
5 19 October 1999 5 19 October 1999
6 6
7 Michael Elizabeth Chastain 7 Michael Elizabeth Chastain
8 <mec@shout.net> 8 <mec@shout.net>
9 9
10 If you are adding new ioctl's to the kernel, y 10 If you are adding new ioctl's to the kernel, you should use the _IO
11 macros defined in <linux/ioctl.h>: 11 macros defined in <linux/ioctl.h>:
12 12
13 ====== == ================================ 13 ====== == ============================================
14 _IO an ioctl with no parameters 14 _IO an ioctl with no parameters
15 _IOW an ioctl with write parameters (cop 15 _IOW an ioctl with write parameters (copy_from_user)
16 _IOR an ioctl with read parameters (cop 16 _IOR an ioctl with read parameters (copy_to_user)
17 _IOWR an ioctl with both write and read p 17 _IOWR an ioctl with both write and read parameters.
18 ====== == ================================ 18 ====== == ============================================
19 19
20 'Write' and 'read' are from the user's point o 20 'Write' and 'read' are from the user's point of view, just like the
21 system calls 'write' and 'read'. For example, 21 system calls 'write' and 'read'. For example, a SET_FOO ioctl would
22 be _IOW, although the kernel would actually re 22 be _IOW, although the kernel would actually read data from user space;
23 a GET_FOO ioctl would be _IOR, although the ke 23 a GET_FOO ioctl would be _IOR, although the kernel would actually write
24 data to user space. 24 data to user space.
25 25
26 The first argument to _IO, _IOW, _IOR, or _IOW 26 The first argument to _IO, _IOW, _IOR, or _IOWR is an identifying letter
27 or number from the table below. Because of th 27 or number from the table below. Because of the large number of drivers,
28 many drivers share a partial letter with other 28 many drivers share a partial letter with other drivers.
29 29
30 If you are writing a driver for a new device a 30 If you are writing a driver for a new device and need a letter, pick an
31 unused block with enough room for expansion: 3 31 unused block with enough room for expansion: 32 to 256 ioctl commands.
32 You can register the block by patching this fi 32 You can register the block by patching this file and submitting the
33 patch to Linus Torvalds. Or you can e-mail me< 33 patch to Linus Torvalds. Or you can e-mail me at <mec@shout.net> and
34 I'll register one for you. 34 I'll register one for you.
35 35
36 The second argument to _IO, _IOW, _IOR, or _IO 36 The second argument to _IO, _IOW, _IOR, or _IOWR is a sequence number
37 to distinguish ioctls from each other. The th 37 to distinguish ioctls from each other. The third argument to _IOW,
38 _IOR, or _IOWR is the type of the data going i 38 _IOR, or _IOWR is the type of the data going into the kernel or coming
39 out of the kernel (e.g. 'int' or 'struct foo' 39 out of the kernel (e.g. 'int' or 'struct foo'). NOTE! Do NOT use
40 sizeof(arg) as the third argument as this resu 40 sizeof(arg) as the third argument as this results in your ioctl thinking
41 it passes an argument of type size_t. 41 it passes an argument of type size_t.
42 42
43 Some devices use their major number as the ide 43 Some devices use their major number as the identifier; this is OK, as
44 long as it is unique. Some devices are irregu 44 long as it is unique. Some devices are irregular and don't follow any
45 convention at all. 45 convention at all.
46 46
47 Following this convention is good because: 47 Following this convention is good because:
48 48
49 (1) Keeping the ioctl's globally unique helps 49 (1) Keeping the ioctl's globally unique helps error checking:
50 if a program calls an ioctl on the wrong d 50 if a program calls an ioctl on the wrong device, it will get an
51 error rather than some unexpected behaviou 51 error rather than some unexpected behaviour.
52 52
53 (2) The 'strace' build procedure automatically 53 (2) The 'strace' build procedure automatically finds ioctl numbers
54 defined with _IO, _IOW, _IOR, or _IOWR. 54 defined with _IO, _IOW, _IOR, or _IOWR.
55 55
56 (3) 'strace' can decode numbers back into usef 56 (3) 'strace' can decode numbers back into useful names when the
57 numbers are unique. 57 numbers are unique.
58 58
59 (4) People looking for ioctls can grep for the 59 (4) People looking for ioctls can grep for them more easily when
60 this convention is used to define the ioct 60 this convention is used to define the ioctl numbers.
61 61
62 (5) When following the convention, the driver 62 (5) When following the convention, the driver code can use generic
63 code to copy the parameters between user a 63 code to copy the parameters between user and kernel space.
64 64
65 This table lists ioctls visible from user land 65 This table lists ioctls visible from user land for Linux/x86. It contains
66 most drivers up to 2.6.31, but I know I am mis 66 most drivers up to 2.6.31, but I know I am missing some. There has been
67 no attempt to list non-X86 architectures or io 67 no attempt to list non-X86 architectures or ioctls from drivers/staging/.
68 68
69 ==== ===== ================================= 69 ==== ===== ======================================================= ================================================================
70 Code Seq# Include File 70 Code Seq# Include File Comments
71 (hex) 71 (hex)
72 ==== ===== ================================= 72 ==== ===== ======================================================= ================================================================
73 0x00 00-1F linux/fs.h 73 0x00 00-1F linux/fs.h conflict!
74 0x00 00-1F scsi/scsi_ioctl.h 74 0x00 00-1F scsi/scsi_ioctl.h conflict!
75 0x00 00-1F linux/fb.h 75 0x00 00-1F linux/fb.h conflict!
76 0x00 00-1F linux/wavefront.h 76 0x00 00-1F linux/wavefront.h conflict!
77 0x02 all linux/fd.h 77 0x02 all linux/fd.h
78 0x03 all linux/hdreg.h 78 0x03 all linux/hdreg.h
79 0x04 D2-DC linux/umsdos_fs.h 79 0x04 D2-DC linux/umsdos_fs.h Dead since 2.6.11, but don't reuse these.
80 0x06 all linux/lp.h 80 0x06 all linux/lp.h
81 0x07 9F-D0 linux/vmw_vmci_defs.h, uapi/linux <<
82 0x09 all linux/raid/md_u.h 81 0x09 all linux/raid/md_u.h
83 0x10 00-0F drivers/char/s390/vmcp.h 82 0x10 00-0F drivers/char/s390/vmcp.h
84 0x10 10-1F arch/s390/include/uapi/sclp_ctl.h 83 0x10 10-1F arch/s390/include/uapi/sclp_ctl.h
85 0x10 20-2F arch/s390/include/uapi/asm/hypfs. 84 0x10 20-2F arch/s390/include/uapi/asm/hypfs.h
86 0x12 all linux/fs.h !! 85 0x12 all linux/fs.h
87 linux/blkpg.h 86 linux/blkpg.h
88 0x15 all linux/fs.h <<
89 0x1b all 87 0x1b all InfiniBand Subsystem
90 88 <http://infiniband.sourceforge.net/>
91 0x20 all drivers/cdrom/cm206.h 89 0x20 all drivers/cdrom/cm206.h
92 0x22 all scsi/sg.h 90 0x22 all scsi/sg.h
93 0x3E 00-0F linux/counter.h < <<
94 '!' 00-1F uapi/linux/seccomp.h 91 '!' 00-1F uapi/linux/seccomp.h
95 '#' 00-3F 92 '#' 00-3F IEEE 1394 Subsystem
96 93 Block for the entire subsystem
97 '$' 00-0F linux/perf_counter.h, linux/perf_ 94 '$' 00-0F linux/perf_counter.h, linux/perf_event.h
98 '%' 00-0F include/uapi/linux/stm.h 95 '%' 00-0F include/uapi/linux/stm.h System Trace Module subsystem
99 < 96 <mailto:alexander.shishkin@linux.intel.com>
100 '&' 00-07 drivers/firewire/nosy-user.h 97 '&' 00-07 drivers/firewire/nosy-user.h
101 '*' 00-1F uapi/linux/user_events.h <<
102 < <<
103 '1' 00-1F linux/timepps.h 98 '1' 00-1F linux/timepps.h PPS kit from Ulrich Windl
104 99 <ftp://ftp.de.kernel.org/pub/linux/daemons/ntp/PPS/>
105 '2' 01-04 linux/i2o.h 100 '2' 01-04 linux/i2o.h
106 '3' 00-0F drivers/s390/char/raw3270.h 101 '3' 00-0F drivers/s390/char/raw3270.h conflict!
107 '3' 00-1F linux/suspend_ioctls.h, 102 '3' 00-1F linux/suspend_ioctls.h, conflict!
108 kernel/power/user.c 103 kernel/power/user.c
109 '8' all 104 '8' all SNP8023 advanced NIC card
110 < 105 <mailto:mcr@solidum.com>
111 ';' 64-7F linux/vfio.h 106 ';' 64-7F linux/vfio.h
112 ';' 80-FF linux/iommufd.h <<
113 '=' 00-3f uapi/linux/ptp_clock.h < <<
114 '@' 00-0F linux/radeonfb.h 107 '@' 00-0F linux/radeonfb.h conflict!
115 '@' 00-0F drivers/video/aty/aty128fb.c 108 '@' 00-0F drivers/video/aty/aty128fb.c conflict!
116 'A' 00-1F linux/apm_bios.h 109 'A' 00-1F linux/apm_bios.h conflict!
117 'A' 00-0F linux/agpgart.h, 110 'A' 00-0F linux/agpgart.h, conflict!
118 drivers/char/agp/compat_ioctl.h 111 drivers/char/agp/compat_ioctl.h
119 'A' 00-7F sound/asound.h 112 'A' 00-7F sound/asound.h conflict!
120 'B' 00-1F linux/cciss_ioctl.h 113 'B' 00-1F linux/cciss_ioctl.h conflict!
121 'B' 00-0F include/linux/pmu.h 114 'B' 00-0F include/linux/pmu.h conflict!
122 'B' C0-FF advanced bbus < 115 'B' C0-FF advanced bbus <mailto:maassen@uni-freiburg.de>
123 'B' 00-0F xen/xenbus_dev.h <<
124 'C' all linux/soundcard.h 116 'C' all linux/soundcard.h conflict!
125 'C' 01-2F linux/capi.h 117 'C' 01-2F linux/capi.h conflict!
126 'C' F0-FF drivers/net/wan/cosa.h 118 'C' F0-FF drivers/net/wan/cosa.h conflict!
127 'D' all arch/s390/include/asm/dasd.h 119 'D' all arch/s390/include/asm/dasd.h
128 'D' 40-5F drivers/scsi/dpt/dtpi_ioctl.h !! 120 'D' 40-5F drivers/scsi/dpt/dtpi_ioctl.h
129 'D' 05 drivers/scsi/pmcraid.h 121 'D' 05 drivers/scsi/pmcraid.h
130 'E' all linux/input.h 122 'E' all linux/input.h conflict!
131 'E' 00-0F xen/evtchn.h 123 'E' 00-0F xen/evtchn.h conflict!
132 'F' all linux/fb.h 124 'F' all linux/fb.h conflict!
133 'F' 01-02 drivers/scsi/pmcraid.h 125 'F' 01-02 drivers/scsi/pmcraid.h conflict!
134 'F' 20 drivers/video/fsl-diu-fb.h 126 'F' 20 drivers/video/fsl-diu-fb.h conflict!
>> 127 'F' 20 drivers/video/intelfb/intelfb.h conflict!
135 'F' 20 linux/ivtvfb.h 128 'F' 20 linux/ivtvfb.h conflict!
136 'F' 20 linux/matroxfb.h 129 'F' 20 linux/matroxfb.h conflict!
137 'F' 20 drivers/video/aty/atyfb_base.c 130 'F' 20 drivers/video/aty/atyfb_base.c conflict!
138 'F' 00-0F video/da8xx-fb.h 131 'F' 00-0F video/da8xx-fb.h conflict!
139 'F' 80-8F linux/arcfb.h 132 'F' 80-8F linux/arcfb.h conflict!
140 'F' DD video/sstfb.h 133 'F' DD video/sstfb.h conflict!
141 'G' 00-3F drivers/misc/sgi-gru/grulib.h 134 'G' 00-3F drivers/misc/sgi-gru/grulib.h conflict!
142 'G' 00-0F xen/gntalloc.h, xen/gntdev.h <<
143 'H' 00-7F linux/hiddev.h 135 'H' 00-7F linux/hiddev.h conflict!
144 'H' 00-0F linux/hidraw.h 136 'H' 00-0F linux/hidraw.h conflict!
145 'H' 01 linux/mei.h 137 'H' 01 linux/mei.h conflict!
146 'H' 02 linux/mei.h 138 'H' 02 linux/mei.h conflict!
147 'H' 03 linux/mei.h 139 'H' 03 linux/mei.h conflict!
148 'H' 00-0F sound/asound.h 140 'H' 00-0F sound/asound.h conflict!
149 'H' 20-40 sound/asound_fm.h 141 'H' 20-40 sound/asound_fm.h conflict!
150 'H' 80-8F sound/sfnt_info.h 142 'H' 80-8F sound/sfnt_info.h conflict!
151 'H' 10-8F sound/emu10k1.h 143 'H' 10-8F sound/emu10k1.h conflict!
152 'H' 10-1F sound/sb16_csp.h 144 'H' 10-1F sound/sb16_csp.h conflict!
153 'H' 10-1F sound/hda_hwdep.h 145 'H' 10-1F sound/hda_hwdep.h conflict!
154 'H' 40-4F sound/hdspm.h 146 'H' 40-4F sound/hdspm.h conflict!
155 'H' 40-4F sound/hdsp.h 147 'H' 40-4F sound/hdsp.h conflict!
156 'H' 90 sound/usb/usx2y/usb_stream.h 148 'H' 90 sound/usb/usx2y/usb_stream.h
157 'H' 00-0F uapi/misc/habanalabs.h 149 'H' 00-0F uapi/misc/habanalabs.h conflict!
158 'H' A0 uapi/linux/usb/cdc-wdm.h 150 'H' A0 uapi/linux/usb/cdc-wdm.h
159 'H' C0-F0 net/bluetooth/hci.h 151 'H' C0-F0 net/bluetooth/hci.h conflict!
160 'H' C0-DF net/bluetooth/hidp/hidp.h 152 'H' C0-DF net/bluetooth/hidp/hidp.h conflict!
161 'H' C0-DF net/bluetooth/cmtp/cmtp.h 153 'H' C0-DF net/bluetooth/cmtp/cmtp.h conflict!
162 'H' C0-DF net/bluetooth/bnep/bnep.h 154 'H' C0-DF net/bluetooth/bnep/bnep.h conflict!
163 'H' F1 linux/hid-roccat.h < 155 'H' F1 linux/hid-roccat.h <mailto:erazor_de@users.sourceforge.net>
164 'H' F8-FA sound/firewire.h 156 'H' F8-FA sound/firewire.h
165 'I' all linux/isdn.h 157 'I' all linux/isdn.h conflict!
166 'I' 00-0F drivers/isdn/divert/isdn_divert.h 158 'I' 00-0F drivers/isdn/divert/isdn_divert.h conflict!
167 'I' 40-4F linux/mISDNif.h 159 'I' 40-4F linux/mISDNif.h conflict!
168 'K' all linux/kd.h 160 'K' all linux/kd.h
169 'L' 00-1F linux/loop.h 161 'L' 00-1F linux/loop.h conflict!
170 'L' 10-1F drivers/scsi/mpt3sas/mpt3sas_ctl. 162 'L' 10-1F drivers/scsi/mpt3sas/mpt3sas_ctl.h conflict!
>> 163 'L' 20-2F linux/lightnvm.h
171 'L' E0-FF linux/ppdd.h 164 'L' E0-FF linux/ppdd.h encrypted disk device driver
172 165 <http://linux01.gwdg.de/~alatham/ppdd.html>
173 'M' all linux/soundcard.h 166 'M' all linux/soundcard.h conflict!
174 'M' 01-16 mtd/mtd-abi.h 167 'M' 01-16 mtd/mtd-abi.h conflict!
175 and drivers/mtd/mtdchar.c 168 and drivers/mtd/mtdchar.c
176 'M' 01-03 drivers/scsi/megaraid/megaraid_sa 169 'M' 01-03 drivers/scsi/megaraid/megaraid_sas.h
177 'M' 00-0F drivers/video/fsl-diu-fb.h 170 'M' 00-0F drivers/video/fsl-diu-fb.h conflict!
178 'N' 00-1F drivers/usb/scanner.h 171 'N' 00-1F drivers/usb/scanner.h
179 'N' 40-7F drivers/block/nvme.c 172 'N' 40-7F drivers/block/nvme.c
180 'N' 80-8F uapi/linux/ntsync.h <<
181 < <<
182 'O' 00-06 mtd/ubi-user.h 173 'O' 00-06 mtd/ubi-user.h UBI
183 'P' all linux/soundcard.h 174 'P' all linux/soundcard.h conflict!
184 'P' 60-6F sound/sscape_ioctl.h 175 'P' 60-6F sound/sscape_ioctl.h conflict!
185 'P' 00-0F drivers/usb/class/usblp.c 176 'P' 00-0F drivers/usb/class/usblp.c conflict!
186 'P' 01-09 drivers/misc/pci_endpoint_test.c 177 'P' 01-09 drivers/misc/pci_endpoint_test.c conflict!
187 'P' 00-0F xen/privcmd.h <<
188 'P' 00-05 linux/tps6594_pfsm.h <<
189 'Q' all linux/soundcard.h 178 'Q' all linux/soundcard.h
190 'R' 00-1F linux/random.h 179 'R' 00-1F linux/random.h conflict!
191 'R' 01 linux/rfkill.h 180 'R' 01 linux/rfkill.h conflict!
192 'R' 20-2F linux/trace_mmap.h <<
193 'R' C0-DF net/bluetooth/rfcomm.h 181 'R' C0-DF net/bluetooth/rfcomm.h
194 'R' E0 uapi/linux/fsl_mc.h 182 'R' E0 uapi/linux/fsl_mc.h
195 'S' all linux/cdrom.h 183 'S' all linux/cdrom.h conflict!
196 'S' 80-81 scsi/scsi_ioctl.h 184 'S' 80-81 scsi/scsi_ioctl.h conflict!
197 'S' 82-FF scsi/scsi.h 185 'S' 82-FF scsi/scsi.h conflict!
198 'S' 00-7F sound/asequencer.h 186 'S' 00-7F sound/asequencer.h conflict!
199 'T' all linux/soundcard.h 187 'T' all linux/soundcard.h conflict!
200 'T' 00-AF sound/asound.h 188 'T' 00-AF sound/asound.h conflict!
201 'T' all arch/x86/include/asm/ioctls.h 189 'T' all arch/x86/include/asm/ioctls.h conflict!
202 'T' C0-DF linux/if_tun.h 190 'T' C0-DF linux/if_tun.h conflict!
203 'U' all sound/asound.h 191 'U' all sound/asound.h conflict!
204 'U' 00-CF linux/uinput.h 192 'U' 00-CF linux/uinput.h conflict!
205 'U' 00-EF linux/usbdevice_fs.h 193 'U' 00-EF linux/usbdevice_fs.h
206 'U' C0-CF drivers/bluetooth/hci_uart.h 194 'U' C0-CF drivers/bluetooth/hci_uart.h
207 'V' all linux/vt.h 195 'V' all linux/vt.h conflict!
208 'V' all linux/videodev2.h 196 'V' all linux/videodev2.h conflict!
209 'V' C0 linux/ivtvfb.h 197 'V' C0 linux/ivtvfb.h conflict!
210 'V' C0 linux/ivtv.h 198 'V' C0 linux/ivtv.h conflict!
>> 199 'V' C0 media/davinci/vpfe_capture.h conflict!
211 'V' C0 media/si4713.h 200 'V' C0 media/si4713.h conflict!
212 'W' 00-1F linux/watchdog.h 201 'W' 00-1F linux/watchdog.h conflict!
213 'W' 00-1F linux/wanrouter.h 202 'W' 00-1F linux/wanrouter.h conflict! (pre 3.9)
214 'W' 00-3F sound/asound.h 203 'W' 00-3F sound/asound.h conflict!
215 'W' 40-5F drivers/pci/switch/switchtec.c 204 'W' 40-5F drivers/pci/switch/switchtec.c
216 'W' 60-61 linux/watch_queue.h 205 'W' 60-61 linux/watch_queue.h
217 'X' all fs/xfs/xfs_fs.h, 206 'X' all fs/xfs/xfs_fs.h, conflict!
218 fs/xfs/linux-2.6/xfs_ioctl32.h, 207 fs/xfs/linux-2.6/xfs_ioctl32.h,
219 include/linux/falloc.h, 208 include/linux/falloc.h,
220 linux/fs.h, 209 linux/fs.h,
221 'X' all fs/ocfs2/ocfs_fs.h 210 'X' all fs/ocfs2/ocfs_fs.h conflict!
222 'X' 01 linux/pktcdvd.h 211 'X' 01 linux/pktcdvd.h conflict!
>> 212 'Y' all linux/cyclades.h
223 'Z' 14-15 drivers/message/fusion/mptctl.h 213 'Z' 14-15 drivers/message/fusion/mptctl.h
224 '[' 00-3F linux/usb/tmc.h 214 '[' 00-3F linux/usb/tmc.h USB Test and Measurement Devices
225 < 215 <mailto:gregkh@linuxfoundation.org>
226 'a' all linux/atm*.h, linux/sonet.h 216 'a' all linux/atm*.h, linux/sonet.h ATM on linux
227 217 <http://lrcwww.epfl.ch/>
228 'a' 00-0F drivers/crypto/qat/qat_common/adf 218 'a' 00-0F drivers/crypto/qat/qat_common/adf_cfg_common.h conflict! qat driver
229 'b' 00-FF 219 'b' 00-FF conflict! bit3 vme host bridge
230 < 220 <mailto:natalia@nikhefk.nikhef.nl>
231 'b' 00-0F linux/dma-buf.h !! 221 'c' all linux/cm4000_cs.h conflict!
232 'c' 00-7F linux/comstats.h 222 'c' 00-7F linux/comstats.h conflict!
233 'c' 00-7F linux/coda.h 223 'c' 00-7F linux/coda.h conflict!
234 'c' 00-1F linux/chio.h 224 'c' 00-1F linux/chio.h conflict!
235 'c' 80-9F arch/s390/include/asm/chsc.h 225 'c' 80-9F arch/s390/include/asm/chsc.h conflict!
236 'c' A0-AF arch/x86/include/asm/msr.h confli 226 'c' A0-AF arch/x86/include/asm/msr.h conflict!
237 'd' 00-FF linux/char/drm/drm.h 227 'd' 00-FF linux/char/drm/drm.h conflict!
238 'd' 02-40 pcmcia/ds.h 228 'd' 02-40 pcmcia/ds.h conflict!
239 'd' F0-FF linux/digi1.h 229 'd' F0-FF linux/digi1.h
240 'e' all linux/digi1.h 230 'e' all linux/digi1.h conflict!
241 'f' 00-1F linux/ext2_fs.h 231 'f' 00-1F linux/ext2_fs.h conflict!
242 'f' 00-1F linux/ext3_fs.h 232 'f' 00-1F linux/ext3_fs.h conflict!
243 'f' 00-0F fs/jfs/jfs_dinode.h 233 'f' 00-0F fs/jfs/jfs_dinode.h conflict!
244 'f' 00-0F fs/ext4/ext4.h 234 'f' 00-0F fs/ext4/ext4.h conflict!
245 'f' 00-0F linux/fs.h 235 'f' 00-0F linux/fs.h conflict!
246 'f' 00-0F fs/ocfs2/ocfs2_fs.h 236 'f' 00-0F fs/ocfs2/ocfs2_fs.h conflict!
247 'f' 13-27 linux/fscrypt.h 237 'f' 13-27 linux/fscrypt.h
248 'f' 81-8F linux/fsverity.h 238 'f' 81-8F linux/fsverity.h
249 'g' 00-0F linux/usb/gadgetfs.h 239 'g' 00-0F linux/usb/gadgetfs.h
250 'g' 20-2F linux/usb/g_printer.h 240 'g' 20-2F linux/usb/g_printer.h
251 'h' 00-7F 241 'h' 00-7F conflict! Charon filesystem
252 < 242 <mailto:zapman@interlan.net>
253 'h' 00-1F linux/hpet.h 243 'h' 00-1F linux/hpet.h conflict!
254 'h' 80-8F fs/hfsplus/ioctl.c 244 'h' 80-8F fs/hfsplus/ioctl.c
255 'i' 00-3F linux/i2o-dev.h 245 'i' 00-3F linux/i2o-dev.h conflict!
256 'i' 0B-1F linux/ipmi.h 246 'i' 0B-1F linux/ipmi.h conflict!
257 'i' 80-8F linux/i8k.h 247 'i' 80-8F linux/i8k.h
258 'i' 90-9F `linux/iio/*.h` <<
259 'j' 00-3F linux/joystick.h 248 'j' 00-3F linux/joystick.h
260 'k' 00-0F linux/spi/spidev.h 249 'k' 00-0F linux/spi/spidev.h conflict!
261 'k' 00-05 video/kyro.h 250 'k' 00-05 video/kyro.h conflict!
262 'k' 10-17 linux/hsi/hsi_char.h 251 'k' 10-17 linux/hsi/hsi_char.h HSI character device
263 'l' 00-3F linux/tcfs_fs.h 252 'l' 00-3F linux/tcfs_fs.h transparent cryptographic file system
264 253 <http://web.archive.org/web/%2A/http://mikonos.dia.unisa.it/tcfs>
265 'l' 40-7F linux/udf_fs_i.h 254 'l' 40-7F linux/udf_fs_i.h in development:
266 !! 255 <http://sourceforge.net/projects/linux-udf/>
267 'm' 00-09 linux/mmtimer.h 256 'm' 00-09 linux/mmtimer.h conflict!
268 'm' all linux/mtio.h 257 'm' all linux/mtio.h conflict!
269 'm' all linux/soundcard.h 258 'm' all linux/soundcard.h conflict!
270 'm' all linux/synclink.h 259 'm' all linux/synclink.h conflict!
271 'm' 00-19 drivers/message/fusion/mptctl.h 260 'm' 00-19 drivers/message/fusion/mptctl.h conflict!
272 'm' 00 drivers/scsi/megaraid/megaraid_io 261 'm' 00 drivers/scsi/megaraid/megaraid_ioctl.h conflict!
273 'n' 00-7F linux/ncp_fs.h and fs/ncpfs/ioctl 262 'n' 00-7F linux/ncp_fs.h and fs/ncpfs/ioctl.c
274 'n' 80-8F uapi/linux/nilfs2_api.h 263 'n' 80-8F uapi/linux/nilfs2_api.h NILFS2
275 'n' E0-FF linux/matroxfb.h 264 'n' E0-FF linux/matroxfb.h matroxfb
276 'o' 00-1F fs/ocfs2/ocfs2_fs.h 265 'o' 00-1F fs/ocfs2/ocfs2_fs.h OCFS2
277 'o' 00-03 mtd/ubi-user.h 266 'o' 00-03 mtd/ubi-user.h conflict! (OCFS2 and UBI overlaps)
278 'o' 40-41 mtd/ubi-user.h 267 'o' 40-41 mtd/ubi-user.h UBI
279 'o' 01-A1 `linux/dvb/*.h` 268 'o' 01-A1 `linux/dvb/*.h` DVB
280 'p' 00-0F linux/phantom.h 269 'p' 00-0F linux/phantom.h conflict! (OpenHaptics needs this)
281 'p' 00-1F linux/rtc.h 270 'p' 00-1F linux/rtc.h conflict!
282 'p' 40-7F linux/nvram.h 271 'p' 40-7F linux/nvram.h
283 'p' 80-9F linux/ppdev.h 272 'p' 80-9F linux/ppdev.h user-space parport
284 < 273 <mailto:tim@cyberelk.net>
285 'p' A1-A5 linux/pps.h 274 'p' A1-A5 linux/pps.h LinuxPPS
286 < 275 <mailto:giometti@linux.it>
287 'q' 00-1F linux/serio.h 276 'q' 00-1F linux/serio.h
288 'q' 80-FF linux/telephony.h 277 'q' 80-FF linux/telephony.h Internet PhoneJACK, Internet LineJACK
289 linux/ixjuser.h 278 linux/ixjuser.h <http://web.archive.org/web/%2A/http://www.quicknet.net>
290 'r' 00-1F linux/msdos_fs.h and fs/fat/dir.c 279 'r' 00-1F linux/msdos_fs.h and fs/fat/dir.c
291 's' all linux/cdk.h 280 's' all linux/cdk.h
292 't' 00-7F linux/ppp-ioctl.h 281 't' 00-7F linux/ppp-ioctl.h
293 't' 80-8F linux/isdn_ppp.h 282 't' 80-8F linux/isdn_ppp.h
294 't' 90-91 linux/toshiba.h 283 't' 90-91 linux/toshiba.h toshiba and toshiba_acpi SMM
295 'u' 00-1F linux/smb_fs.h 284 'u' 00-1F linux/smb_fs.h gone
296 'u' 00-2F linux/ublk_cmd.h <<
297 'u' 20-3F linux/uvcvideo.h 285 'u' 20-3F linux/uvcvideo.h USB video class host driver
298 'u' 40-4f linux/udmabuf.h 286 'u' 40-4f linux/udmabuf.h userspace dma-buf misc device
299 'v' 00-1F linux/ext2_fs.h 287 'v' 00-1F linux/ext2_fs.h conflict!
300 'v' 00-1F linux/fs.h 288 'v' 00-1F linux/fs.h conflict!
301 'v' 00-0F linux/sonypi.h 289 'v' 00-0F linux/sonypi.h conflict!
302 'v' 00-0F media/v4l2-subdev.h 290 'v' 00-0F media/v4l2-subdev.h conflict!
303 'v' 20-27 arch/powerpc/include/uapi/asm/vas 291 'v' 20-27 arch/powerpc/include/uapi/asm/vas-api.h VAS API
304 'v' C0-FF linux/meye.h 292 'v' C0-FF linux/meye.h conflict!
305 'w' all 293 'w' all CERN SCI driver
306 'y' 00-1F 294 'y' 00-1F packet based user level communications
307 < 295 <mailto:zapman@interlan.net>
308 'z' 00-3F 296 'z' 00-3F CAN bus card conflict!
309 < 297 <mailto:hdstich@connectu.ulm.circular.de>
310 'z' 40-7F 298 'z' 40-7F CAN bus card conflict!
311 < 299 <mailto:oe@port.de>
312 'z' 10-4F drivers/s390/crypto/zcrypt_api.h 300 'z' 10-4F drivers/s390/crypto/zcrypt_api.h conflict!
313 '|' 00-7F linux/media.h 301 '|' 00-7F linux/media.h
314 0x80 00-1F linux/fb.h 302 0x80 00-1F linux/fb.h
315 0x81 00-1F linux/vduse.h <<
316 0x89 00-06 arch/x86/include/asm/sockios.h 303 0x89 00-06 arch/x86/include/asm/sockios.h
317 0x89 0B-DF linux/sockios.h 304 0x89 0B-DF linux/sockios.h
318 0x89 E0-EF linux/sockios.h 305 0x89 E0-EF linux/sockios.h SIOCPROTOPRIVATE range
>> 306 0x89 E0-EF linux/dn.h PROTOPRIVATE range
319 0x89 F0-FF linux/sockios.h 307 0x89 F0-FF linux/sockios.h SIOCDEVPRIVATE range
320 0x8A 00-1F linux/eventpoll.h <<
321 0x8B all linux/wireless.h 308 0x8B all linux/wireless.h
322 0x8C 00-3F 309 0x8C 00-3F WiNRADiO driver
323 310 <http://www.winradio.com.au/>
324 0x90 00 drivers/cdrom/sbpcd.h 311 0x90 00 drivers/cdrom/sbpcd.h
325 0x92 00-0F drivers/usb/mon/mon_bin.c 312 0x92 00-0F drivers/usb/mon/mon_bin.c
326 0x93 60-7F linux/auto_fs.h 313 0x93 60-7F linux/auto_fs.h
327 0x94 all fs/btrfs/ioctl.h 314 0x94 all fs/btrfs/ioctl.h Btrfs filesystem
328 and linux/fs.h 315 and linux/fs.h some lifted to vfs/generic
329 0x97 00-7F fs/ceph/ioctl.h 316 0x97 00-7F fs/ceph/ioctl.h Ceph file system
330 0x99 00-0F 317 0x99 00-0F 537-Addinboard driver
331 < 318 <mailto:buk@buks.ipn.de>
332 0xA0 all linux/sdp/sdp.h 319 0xA0 all linux/sdp/sdp.h Industrial Device Project
333 < 320 <mailto:kenji@bitgate.com>
334 0xA1 0 linux/vtpm_proxy.h 321 0xA1 0 linux/vtpm_proxy.h TPM Emulator Proxy Driver
335 0xA2 all uapi/linux/acrn.h 322 0xA2 all uapi/linux/acrn.h ACRN hypervisor
336 0xA3 80-8F 323 0xA3 80-8F Port ACL in development:
337 < 324 <mailto:tlewis@mindspring.com>
338 0xA3 90-9F linux/dtlk.h 325 0xA3 90-9F linux/dtlk.h
339 0xA4 00-1F uapi/linux/tee.h 326 0xA4 00-1F uapi/linux/tee.h Generic TEE subsystem
340 0xA4 00-1F uapi/asm/sgx.h < 327 0xA4 00-1F uapi/asm/sgx.h <mailto:linux-sgx@vger.kernel.org>
341 0xA5 01-05 linux/surface_aggregator/cdev.h !! 328 0xA5 01 linux/surface_aggregator/cdev.h Microsoft Surface Platform System Aggregator
342 < <<
343 0xA5 20-2F linux/surface_aggregator/dtx.h <<
344 < 329 <mailto:luzmaximilian@gmail.com>
345 0xAA 00-3F linux/uapi/linux/userfaultfd.h 330 0xAA 00-3F linux/uapi/linux/userfaultfd.h
346 0xAB 00-1F linux/nbd.h 331 0xAB 00-1F linux/nbd.h
347 0xAC 00-1F linux/raw.h 332 0xAC 00-1F linux/raw.h
348 0xAD 00 333 0xAD 00 Netfilter device in development:
349 < 334 <mailto:rusty@rustcorp.com.au>
350 0xAE 00-1F linux/kvm.h 335 0xAE 00-1F linux/kvm.h Kernel-based Virtual Machine
351 < 336 <mailto:kvm@vger.kernel.org>
352 0xAE 40-FF linux/kvm.h 337 0xAE 40-FF linux/kvm.h Kernel-based Virtual Machine
353 < 338 <mailto:kvm@vger.kernel.org>
354 0xAE 20-3F linux/nitro_enclaves.h 339 0xAE 20-3F linux/nitro_enclaves.h Nitro Enclaves
355 0xAF 00-1F linux/fsl_hypervisor.h 340 0xAF 00-1F linux/fsl_hypervisor.h Freescale hypervisor
356 0xB0 all 341 0xB0 all RATIO devices in development:
357 < 342 <mailto:vgo@ratio.de>
358 0xB1 00-1F 343 0xB1 00-1F PPPoX
359 < 344 <mailto:mostrows@styx.uwaterloo.ca>
360 0xB2 00 arch/powerpc/include/uapi/asm/pap <<
361 <<
362 0xB2 01-02 arch/powerpc/include/uapi/asm/pap <<
363 <<
364 0xB3 00 linux/mmc/ioctl.h 345 0xB3 00 linux/mmc/ioctl.h
365 0xB4 00-0F linux/gpio.h < 346 0xB4 00-0F linux/gpio.h <mailto:linux-gpio@vger.kernel.org>
366 0xB5 00-0F uapi/linux/rpmsg.h < 347 0xB5 00-0F uapi/linux/rpmsg.h <mailto:linux-remoteproc@vger.kernel.org>
367 0xB6 all linux/fpga-dfl.h 348 0xB6 all linux/fpga-dfl.h
368 0xB7 all uapi/linux/remoteproc_cdev.h < 349 0xB7 all uapi/linux/remoteproc_cdev.h <mailto:linux-remoteproc@vger.kernel.org>
369 0xB7 all uapi/linux/nsfs.h < <<
370 0xB8 01-02 uapi/misc/mrvl_cn10k_dpi.h <<
371 0xC0 00-0F linux/usb/iowarrior.h 350 0xC0 00-0F linux/usb/iowarrior.h
372 0xCA 00-0F uapi/misc/cxl.h 351 0xCA 00-0F uapi/misc/cxl.h
373 0xCA 10-2F uapi/misc/ocxl.h 352 0xCA 10-2F uapi/misc/ocxl.h
374 0xCA 80-BF uapi/scsi/cxlflash_ioctl.h 353 0xCA 80-BF uapi/scsi/cxlflash_ioctl.h
375 0xCB 00-1F 354 0xCB 00-1F CBM serial IEC bus in development:
376 < 355 <mailto:michael.klein@puffin.lb.shuttle.de>
377 0xCC 00-0F drivers/misc/ibmvmc.h 356 0xCC 00-0F drivers/misc/ibmvmc.h pseries VMC driver
378 0xCD 01 linux/reiserfs_fs.h 357 0xCD 01 linux/reiserfs_fs.h
379 0xCE 01-02 uapi/linux/cxl_mem.h 358 0xCE 01-02 uapi/linux/cxl_mem.h Compute Express Link Memory Devices
380 0xCF 02 fs/smb/client/cifs_ioctl.h !! 359 0xCF 02 fs/cifs/ioctl.c
381 0xDB 00-0F drivers/char/mwave/mwavepub.h 360 0xDB 00-0F drivers/char/mwave/mwavepub.h
382 0xDD 00-3F 361 0xDD 00-3F ZFCP device driver see drivers/s390/scsi/
383 < 362 <mailto:aherrman@de.ibm.com>
384 0xE5 00-3F linux/fuse.h 363 0xE5 00-3F linux/fuse.h
385 0xEC 00-01 drivers/platform/chrome/cros_ec_d 364 0xEC 00-01 drivers/platform/chrome/cros_ec_dev.h ChromeOS EC driver
386 0xEE 00-09 uapi/linux/pfrut.h <<
387 0xF3 00-3F drivers/usb/misc/sisusbvga/sisusb 365 0xF3 00-3F drivers/usb/misc/sisusbvga/sisusb.h sisfb (in development)
388 < 366 <mailto:thomas@winischhofer.net>
389 0xF6 all 367 0xF6 all LTTng Linux Trace Toolkit Next Generation
390 < 368 <mailto:mathieu.desnoyers@efficios.com>
391 0xF8 all arch/x86/include/uapi/asm/amd_hsm <<
392 < <<
393 0xFD all linux/dm-ioctl.h 369 0xFD all linux/dm-ioctl.h
394 0xFE all linux/isst_if.h 370 0xFE all linux/isst_if.h
395 ==== ===== ================================= 371 ==== ===== ======================================================= ================================================================
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