subyte(D3X)subyte(D3X)NAMEsubyte - set (write) a byte to user space
SYNOPSIS
int subyte(char *usr_v_addr, char c);
DESCRIPTIONsubyte writes the given (8-bit) byte, c, to the specified address,
user_v_addr, in the currently mapped user process' address space.
Return Values
Upon successful completion, subyte returns 0. Otherwise, subyte returns
-1, indicating an invalid user virtual address.
See Also
copyout(D3), fubyte(D3X), suword(D3X),
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