From 7e0f021a9aec35fd8e6725e87e3313b101d26f5e Mon Sep 17 00:00:00 2001 From: Tobias Klauser Date: Sun, 27 Jan 2008 11:37:44 +0100 Subject: Initial import (2.0.2-6) --- reference/C/MAN/ioctl.htm | 101 ++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 101 insertions(+) create mode 100644 reference/C/MAN/ioctl.htm (limited to 'reference/C/MAN/ioctl.htm') 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 @@ +ioctl + +
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IOCTL(2)            Linux Programmer's Manual            IOCTL(2)
+

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+
NAME
+
       ioctl - control device
+
+
SYNOPSIS
+
       #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.]
+
+
DESCRIPTION
+
       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.
+
+
RETURN VALUE
+
       On success, zero is returned.  On error, -1  is  returned,
+       and errno is set appropriately.
+
+
ERRORS
+
       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.
+
+
HISTORY
+
       An ioctl function call appeared in Version 7 AT&T UNIX.
+
+
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+

SEE ALSO +

+execve, +fcntl, +mt, +sd, +tty, +

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+
BSD Man Page               23 July 1993                         1
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