vt(4): allow up to _SIG_MAXSIG (128) for VT_SETMODEHEADmain

VT_SETMODE ioctl currently checks the provided signal numbers with its
own ISSIGVALID macro that uses NSIG (32) as a maximum, although the code
that will actually send the signal in sys/kern/kern_sig.c uses
_SIG_VALID which allows up to _SIG_MAXSIG (128).

This change aligns the vt code with the kernel internals and enables the
use of higher signal numbers so that applications are not limited to
SIGUSR1 and SIGUSR2 for vt release and acquire signals.

Signed-off-by:	Quentin Thébault <quentin.thebault@defenso.fr>
Reviewed by:	emaste, imp, kevans
Differential Revision:	https://reviews.freebsd.org/D53615

0 files changed, 0 insertions, 0 deletions