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Use CTASSERT to enforce the relationship between the new serial port

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modem definitions and the old definitions from ioctls.
This commit is contained in:
Poul-Henning Kamp 2004-06-24 10:06:55 +00:00
parent c56bdd05fa
commit 98de21b633
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=131042
1 changed files with 17 additions and 0 deletions
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17
sys/kern/tty.c
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@ -2858,3 +2858,20 @@ ttyldoptim(struct tty *tp)
tp->t_state &= ~TS_CAN_BYPASS_L_RINT;
return (linesw[tp->t_line]->l_hotchar);
}
/*
* Record the relationship between the serial ports notion of modem control
* signals and the one used in certain ioctls in a way the compiler can enforce
* XXX: We should define TIOCM_* in terms of SER_ if we can limit the
* XXX: consequences of the #include work that would take.
*/
CTASSERT(SER_DTR == TIOCM_DTR / 2);
CTASSERT(SER_RTS == TIOCM_RTS / 2);
CTASSERT(SER_STX == TIOCM_ST / 2);
CTASSERT(SER_SRX == TIOCM_SR / 2);
CTASSERT(SER_CTS == TIOCM_CTS / 2);
CTASSERT(SER_DCD == TIOCM_DCD / 2);
CTASSERT(SER_RI == TIOCM_RI / 2);
CTASSERT(SER_DSR == TIOCM_DSR / 2);