diff options
| author | John-Mark Gurney <jmg@FreeBSD.org> | 1997-03-02 14:03:33 +0000 |
|---|---|---|
| committer | John-Mark Gurney <jmg@FreeBSD.org> | 1997-03-02 14:03:33 +0000 |
| commit | 4eaede87b025d198734babcc8dc98ff356f41d19 (patch) | |
| tree | 6e768065e7ae30da28183db9dea2daeb7e5351a0 | |
| parent | 3b96d4d951b43cda45a2a56ee9600466c0058f31 (diff) | |
Notes
| -rw-r--r-- | sys/i386/isa/pcvt/pcvt_ext.c | 14 |
1 files changed, 11 insertions, 3 deletions
diff --git a/sys/i386/isa/pcvt/pcvt_ext.c b/sys/i386/isa/pcvt/pcvt_ext.c index e8a75bb77d5b..b27575f351ab 100644 --- a/sys/i386/isa/pcvt/pcvt_ext.c +++ b/sys/i386/isa/pcvt/pcvt_ext.c @@ -72,6 +72,8 @@ #include <i386/isa/pcvt/pcvt_hdr.h> /* global include */ +#define ISSIGVALID(sig) ((sig) > 0 && (sig) < NSIG) + static int s3testwritable( void ); static int et4000_col( int ); static int wd90c11_col( int ); @@ -2505,9 +2507,15 @@ usl_vt_ioctl(Dev_t dev, int cmd, caddr_t data, int flag, struct proc *p) return EBUSY; /* already in use on this VT */ } - vsp->smode = newmode; - vsp->proc = p; - vsp->pid = p->p_pid; + if (ISSIGVALID(newmode->relsig) && ISSIGVALID(newmode->acqsig) + && ISSIGVALID(newmode->frsig)) { + vsp->smode = newmode; + vsp->proc = p; + vsp->pid = p->p_pid; + } else { + splx(opri); + return EINVAL; + } #if PCVT_FREEBSD > 206 /* |