osf1 man page for subyte

subyte(9r)																subyte(9r)

NAME
       subyte - General: Writes a byte into user address space

SYNOPSIS
       int subyte(
	       char *user_dest,
	       char byte );

ARGUMENTS
       Specifies the address in user space to write the byte.  Specifies the byte to be written.

DESCRIPTION
       The subyte routine copies 1 byte from the protected kernel address space to the unprotected user address space.

RETURN VALUES
       Upon  successful  completion, subyte returns the value 0 (zero).  Otherwise, it returns a -1, indicating that the user address specified in
       user_dest could not be accessed.

SEE ALSO
       Routines: copyout(9r), copyoutstr(9r), fubyte(9r), fuword(9r), suword(9r)

																	subyte(9r)