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)
