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console_ioctl(4) -- ioctl's for console terminal and virtual consoles
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WARNING: If you use the following information you are going to burn yourself. WARNING: ioctl's are undocumented Linux internals, liable to be changed without warning. Use POSIX functions. The followi... |
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console_ioctls(4) -- 0console ioctl's- ioctl's for console terminal and virtual consoles
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WARNING: If you use the following information you are going to burn yourself. WARNING: ioctl's are undocumented Linux internals, liable to be changed without warning. Use POSIX functions where availa... |
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dsp56k(4) -- DSP56001 interface device
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The Motorola DSP56001 is a fully programmable 24-bit digital signal processor found in Atari Falcon030-compatible computers. The dsp56k special file is used to control the DSP56001, and to send and re... |
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fd(4) -- floppy disk device
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fd special files access the floppy disk drives in raw mode. The following ioctl(2) calls are supported by fd devices: FDCLRPRM [Toc] [Back] clears the media information of a drive (geometry of d... |
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fifo(4) -- first-in first-out special file, named pipe
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A FIFO special file (a named pipe) is similar to a pipe, except that it is accessed as part of the file system. It can be opened by multiple processes for reading or writing. When processes are exchan... |
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full(4) -- always full device
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File /dev/full has major device number 1 and minor device number 7. Writes to the /dev/full device will fail with an ENOSPC error. Reads from the /dev/full device will return \0 characters. Seeks on ... |
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hd(4) -- MFM/IDE hard disk devices
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The hd* devices are block devices to access MFM/IDE hard disk drives in raw mode. The master drive on the primary IDE controller (major device number 3) is hda; the slave drive is hdb. The master driv... |
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initrd(4) -- boot loader initialized RAM disk
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The special file /dev/initrd is a read-only block device. Device /dev/initrd is a RAM disk that is initialized (e.g. loaded) by the boot loader before the kernel is started. The kernel then can use th... |
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intro(4) -- Introduction to special files
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This chapter describes special files. |
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lp(4) -- line printer devices
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The following ioctl(2) calls are supported: int ioctl(int fd, LPTIME, int arg) Sets the amount of time that the driver sleeps before rechecking the printer when the printer's buffer appears to be fil... |
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mem(4) -- system memory, kernel memory and system ports
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Mem is a character device file that is an image of the main memory of the computer. It may be used, for example, to examine (and even patch) the system. Byte addresses in mem are interpreted as physic... |
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mouse(4) -- serial mouse interface
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Introduction The pinout of the usual 9 pin plug as used for serial mice is: pin name used for 2 RX Data 3 TX -12 V, Imax = 10 mA 4 DTR +12 V, Imax = 10 mA 7 RTS +12 V, Imax = 10 mA 5 GND Ground This i... |
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null(4) -- data sink
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Data written on a null or zero special file is discarded. Reads from the null special file always return end of file, whereas reads from zero always return \0 characters. null and zero are typically ... |
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ram(4) -- ram disk device
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The Ram device is a block device to access the ram disk in raw mode. It is typically created by: mknod -m 660 /dev/ram b 1 1 chown root:disk /dev/ram |
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random(4) -- kernel random number source devices
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The character special files /dev/random and /dev/urandom (present since Linux 1.3.30) provide an interface to the kernel's random number generator. File /dev/random has major device number 1 and mino... |
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sd(4) -- Driver for SCSI Disk Drives
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The following ioctls are provided: HDIO_GETGEO Returns the BIOS disk parameters in the following structure: struct hd_geometry { unsigned char heads; unsigned char sectors; unsigned short cylinders; u... |
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st(4) -- SCSI tape device
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The st driver provides the interface to a variety of SCSI tape devices. Currently, the driver takes control of all detected devices of type "sequential-access." The st driver uses major device numbe... |
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tty(4) -- controlling terminal
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The file /dev/tty is a character file with major number 5 and minor number 0, usually of mode 0666 and owner.group root.tty. It is a synonym for the controlling terminal of a process, if any. In addit... |
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ttys(4) -- serial terminal lines
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ttyS[0-3] are character devices for the serial terminal lines. They are typically created by: mknod -m 660 /dev/ttyS0 c 4 64 # base address 0x03f8 mknod -m 660 /dev/ttyS1 c 4 65 # base address 0x02f8 ... |
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vcs(4) -- virtual console memory
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/dev/vcs0 is a character device with major number 7 and minor number 0, usually of mode 0644 and owner root.tty. It refers to the memory of the currently displayed virtual console terminal. /dev/vcs[1... |
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wavelan(4) -- AT&T GIS WaveLAN ISA device driver
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wavelan is the low-level device driver for the NCR / AT&T / Lucent WaveLAN ISA and Digital (DEC) RoamAbout DS wireless ethernet adapter. This driver is available as a module or might be compiled in th... |
