fubyte man page on DigitalUNIX

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fubyte(9r)							    fubyte(9r)

NAME
       fubyte - General: Returns a byte from user address space

SYNOPSIS
       int fubyte(
	       char *user_src );

ARGUMENTS
       Specifies the address in user space from which to read the byte.

DESCRIPTION
       The  fubyte  routine  returns  1 byte from the unprotected user address
       space to the calling program.

NOTES
       If the size of the return value is larger than 1 byte, the  byte	 actu‐
       ally used for the return value is implementation defined.

RETURN VALUES
       Upon  successful	 completion,  fubyte  returns  a  value greater than 0
       (zero). Otherwise, it returns -1,  indicating  that  the	 user  address
       specified in user_src cannot be accessed.

SEE ALSO
       Routines: copyinstr(9r), fuword(9r), subyte(9r), suword(9r)

								    fubyte(9r)
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