v7 man page for mknod

MKNOD(2)							System Calls Manual							  MKNOD(2)

NAME
       mknod - make a directory or a special file

SYNOPSIS
       mknod(name, mode, addr)
       char *name;

DESCRIPTION
       Mknod  creates  a  new file whose name is the null-terminated string pointed to by name.  The mode of the new file (including directory and
       special file bits) is initialized from mode.  (The protection part of the mode is modified by the process's mode mask; see umask(2)).   The
       first  block  pointer  of the i-node is initialized from addr.  For ordinary files and directories addr is normally zero.  In the case of a
       special file, addr specifies which special file.

       Mknod may be invoked only by the super-user.

SEE ALSO
       mkdir(1), mknod(1), filsys(5)

DIAGNOSTICS
       Zero is returned if the file has been made; -1 if the file already exists or if the user is not the super-user.

ASSEMBLER
       (mknod = 14.)
       sys mknod; name; mode; addr

																	  MKNOD(2)