NAME
	  mknod	- Creates an FIFO or special file

     LIBRARY
	  Standard C Library (libc.a)

     SYNOPSIS
	  #include <sys/types.h>
	  #include <sys/stat.h>
	  int mknod (
	       const char *path,
	       int mode,
	       dev_t device );


     PARAMETERS
	  path	    Names the new file.	 If the	final component	of the
		    path parameter names a symbolic link, the link
		    will be traversed and pathname resolution will
		    continue.

	  mode	    Specifies the file type, attributes, and access
		    permissions. This parameter	is constructed by log-
		    ically ORing values	described in the sys/mode.h
		    header file.

	  device    Depends upon the configuration and is used only if
		    the	mode parameter specifies a block or character
		    special file.  If the file you specify is a	remote
		    file, the value of the device parameter must be
		    meaningful on the node where the file resides.


     DESCRIPTION
	  The mknod() function creates a special file or FIFO.	Using
	  the mknod() function to create file types other than FIFO
	  special requires superuser privilege.

	  For the mknod() function to complete successfully, a process
	  must have search permission and write	permission in the
	  parent directory of the path parameter.

	  The new file has the following characteristics:


	    o  File type as specified by the mode parameter.

	    o  Owner ID	set to the process effective user ID.

	    o  Group ID	set to the group ID of its parent directory.

	    o  Permission and attribute	bits set according to the
	       value of	the mode parameter. All	bits set in the	pro-
	       cess file mode creation mask are	cleared.  See the
	       umask() function.


     RETURN VALUES
	  Upon successful completion of	the mknod() function a value
	  of 0 (zero) is returned.  Otherwise, a value of -1 is
	  returned and errno is	set to indicate	the error.

     ERRORS
	  If the mknod() function fails, the new file is not created
	  and errno may	be set to one of the following values:


	  [EACCES]  A component	of the path prefix denies search per-
		    mission, or	write permission is denied on the
		    parent directory of	the FIFO to be created.

	  [EPERM]   The	mode parameter specifies a file	type other
		    than FIFO and the calling process does not have
		    the	sufficient privilege.

	  [EEXIST]  The	named file exists.

	  [EIO]	    While accessing the	file system, an	I/O error
		    occurred.

	  [EINVAL]  An invalid argument	has been specified.

	  [EROFS]   The	directory in which the file is to be created
		    is located on a read-only file system.

	  [ENOSPC]  The	directory that would contain the new file can-
		    not	be extended or the file	system is out of file
		    allocation resources.

	  [EDQUOT]  The	directory in which the entry for the new link
		    is being placed cannot be extended because the
		    user's quota of disk blocks	or inodes on the file
		    system is exhausted.

	  [ENAMETOOLONG]
		    The	length of the path parameter exceeds PATH_MAX
		    or a pathname component is longer than NAME_MAX.

	  [ENOENT]  A component	of the path prefix does	not exist or
		    the	path parameter points to an empty string.

	  [ENOTDIR] A component	of the path prefix is not a directory.


     RELATED INFORMATION
	  Functions: chmod(2), mkdir(2), open(2), umask(2), stat(2)

	  Commands: chmod(1), mkdir(1)