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diff --git a/reference/C/MAN/ioctl.htm b/reference/C/MAN/ioctl.htm new file mode 100644 index 0000000..23d58e6 --- /dev/null +++ b/reference/C/MAN/ioctl.htm @@ -0,0 +1,101 @@ +<TITLE>ioctl</TITLE> +<body bgcolor="#ffffcc"> +<hr> +<pre> + + + +<h3>IOCTL(2) Linux Programmer's Manual IOCTL(2) +</h3> + +<h3>NAME +</h3> ioctl - control device + +<h3>SYNOPSIS +</h3> #include <sys/ioctl.h> + + int ioctl(int d, int request, ...) + + [The "third" argument is traditionally char *argp, and + will be so named for this discussion.] + +<h3>DESCRIPTION +</h3> The ioctl function manipulates the underlying device + parameters of special files. In particular, many operat- + ing characteristics of character special files (e.g. ter- + minals) may be controlled with ioctl requests. The argu- + ment d must be an open file descriptor. + + An ioctl request has encoded in it whether the argument is + an in parameter or out parameter, and the size of the + argument argp in bytes. Macros and defines used in speci- + fying an ioctl request are located in the file + sys/ioctl.h. + +<h3>RETURN VALUE +</h3> On success, zero is returned. On error, -1 is returned, + and errno is set appropriately. + +<h3>ERRORS +</h3> EBADF d is not a valid descriptor. + + ENOTTY d is not associated with a character special + device. + + ENOTTY The specified request does not apply to the kind of + object that the descriptor d references. + + EINVAL Request or argp is not valid. + +<h3>HISTORY +</h3> An ioctl function call appeared in Version 7 AT&T UNIX. + +</pre> +<hr> +<h3>SEE ALSO +</h3><p> +<a href=execve.htm>execve</a>, +<a href=fcntl.htm>fcntl</a>, +<a href=mt+4>mt</a>, +<a href=sd+4>sd</a>, +<a href=tty+4>tty</a>, +<pre> + + + + + + + + + + + + + +<h3>BSD Man Page 23 July 1993 1 +</h3> + +
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