source: FOIAVistA/tag/r/KERNEL-XU-A4A7-USC-XG-XLF-XNOA-XPD-XQ-XVIR-ZI-ZOSF-ZOSV-ZT-ZU-%Z-XIP--XQAB--XUC--XUR--ZIN--ZTED/ZIS2.m@ 1154

%ZIS2 ;SFISC/AC,RWF -- DEVICE HANDLER (CHECKS) ;06/12/2002  15:41
 ;;8.0;KERNEL;**69,104,112,118,136,241**;JUL 10, 1995
HUNT S:'$D(%ZISHP) %ZISHP=%E,%ZISHGL=0 S %E=0
 F  S %ZISHGL=$O(^%ZIS(1,%ZISHG(0),"HG",%ZISHGL)) Q:%ZISHGL'>0  D  Q:%E
 . N %1,%2 S %1=$G(^%ZIS(1,%ZISHG(0),"HG",+%ZISHGL,0)),%2=$G(^%ZIS(1,+%1,0))
 . ;Check that HG device is on same VOL.
 . I $P(%2,"^",9)=%ZISV!($P(%2,"^",9)="") S %E=+$P(^%ZIS(1,%ZISHG(0),"HG",+%ZISHGL,0),"^")
 . Q
 G L2:%ZISHGL>0 S %ZISHPOP=1,%E=%ZISHP
 ;
L2 ;Entry point from %ZIS1
 I $D(DTOUT)!$D(DUOUT) K %ZISHP,%ZISHPOP Q
CHECK K %ZISCPU S POP=0,%Z=^%ZIS(1,%E,0),IO=$P(%Z,"^",2)
 S:%IS["Q"&'$D(ZTQUEUED)&($P(%Z,"^",12)=1!$D(XQNOGO)) %ZISB=0,IO("Q")=1 ;Forced Queueing 
 I $P(%Z,"^",12)=2 S %IS=$TR(%IS,"Q") I $D(IO("Q")) D  Q
 . I '$D(IOP) W !,"Queuing NOT ALLOWED on this device"
 . S POP=1 K:$D(IOP) IO("Q") Q
 S %Z90=$G(^(90)),%Z95=$G(^(95)),%ZTIME=$G(^("TIME")),%ZTYPE=$G(^("TYPE")),%ZISHG=$O(^%ZIS(1,"AHG",%E,0))
 I %ZISHG,$D(^%ZIS(1,+%ZISHG,0)) S:'$D(%ZISHG(0)) %ZISHG(0)=+%ZISHG S %ZISHG=$P(^(0),"^",1)
 E  S %ZISHG=""
 I %ZTYPE="HG" D OTHCPU("HUNT GROUP") G T:$D(%ZISHG(0))!POP
 I %ZTYPE="RES" S %ZISRL=+$P(%Z1,"^",10) G T
VTRM I %ZTYPE="VTRM",'('$D(IO("Q"))&(%A=%H)) W:'$D(IOP)&'$D(%ZISHP) *7,"  [YOU CAN NOT SELECT A VIRTUAL TERMINAL]" S POP=1 ;Virtual Terminal Check
 S:%ZTYPE="VTRM"&'$D(IO("Q"))&(%A=%H) IO=$I
 ;
SLAVE I $D(IO("Q")),$P(%Z,"^",2)=0,$P(%Z,"^",8)']"" W:'$D(IOP) *7,!?10,"  [SLAVE device NOT set up for queuing]" S POP=1 G T
OCPU D OTHCPU("DEVICE")
 ;
OOS G T:POP I %Z90,$D(DT)#2,%Z90'>DT S POP=1 ;Out Of Service Check
 I $T,'$D(IOP),'$D(%ZISHP) W *7,"  [Out of Service]" ;I 'POP W " ..OK" S %=2,U="^" D YN^%ZIS1 G:%=0 OOS S:%'=1 POP=1
 ;
PTIME G T:POP!(IO=$I)!(IO=0)
 ;Prohibitted Time Check
 S %A=$P(%ZTIME,"^") I %ZISB,$L(%A) D  I POP,'$D(IOP),'$D(%ZISHP) W *7,"  [ACCESS PROHIBITED "_%A_"]" ;AT THIS TIME]"
 . N %C,%L,%H ;%C is current time, %L is lower limit, %H is upper limit
 . S %C=$P($H,",",2),%C=%C\60#60+(%C\3600*100),%H=$P(%A,"-",2),%L=+%A
 . I $S(%H'<%L:(%C'>%H&(%C'<%L)),1:(%C'<%L!(%C'>%H))) S POP=1
 . Q
DUZ I 'POP D SEC ;Security Check
 ;
T I POP,$D(%ZISHG(0)),%IS'["D",'$D(%ZISHPOP),%ZISB G HUNT
 I POP D HGBSY:$D(%ZISHPOP) ;G T2:%IS["T"
 ;
TMPVAR K IO("S") S %ZISIOS=%E S:IO=0 IO=$I,IO("S")=%H
 S %ZISOPAR=$$IOPAR(%E,"IOPAR")
 S %ZISUPAR=$$IOPAR(%E,"IOUPAR"),%ZISTO=+$P(%ZTIME,"^",2)
 I $D(IO("S")) D  I POP Q
 . S IO=$S(%IS["S":$P($G(^%ZIS(1,+$P(%Z,"^",8),0)),"^",2),1:IO)
 . I %IS["S",IO]"" S %H=+$P(%Z,"^",8),IO("S")=%H,IO(0)=IO
 . S IO("S")=$S($G(^XUTL("XQ",$J,"IOST(0)")):^("IOST(0)"),1:$G(^%ZIS(1,%H,"SUBTYPE")))
 . S:IO="" POP=1
 . Q
 S %A=+$G(^%ZIS(1,%E,"SUBTYPE")),%ZISTP=0 ;%A is pointer to subtype
 I %E=%H,%ZTYPE["TRM" D  I 1
 . I $D(^XUTL("XQ",$J,"IOST(0)")) D  ;Use home
 . . S %A=+^XUTL("XQ",$J,"IOST(0)"),%Z91="",%ZISTP=1
 . . F %ZISI="IOM","IOF","IOSL","IOBS","IOXY" S %Z91=%Z91_$G(^XUTL("XQ",$J,%ZISI))_"^"
 . E  S %=$$LNPRTSUB^%ZISUTL I %>0 S %A=%,%Z91=""
 E  S %Z91=$P($G(^%ZIS(2,%A,1)),"^",1,4),$P(%Z91,"^",5)=$G(^("XY"))
 ;I $D(%Z91),%Z91'?1.4"^" ;$P(%Z91,"^")]"",$P(%Z91,"^",2)]"",$P(%Z91,"^",3),$P(%Z91,"^",4)]""
 D ST^%ZIS3(%ZISTP) S:%IS["U" USIO=$P(%Z91,"^",1,4)
T2 I POP S:%IS'["T" IO="" Q
 G ^%ZIS3:"^MTRM^VTRM^TRM^SPL^MT^SDP^HFS^RES^OTH^BAR^HG^IMPC^CHAN^"[("^"_%ZTYPE_"^") ;Jump to next part
 S POP=1 Q
 ;
HGBSY S POP=1 S:%IS'["T" IO="" K %ZISHP,%ZISHPOP Q:$D(IOP)
 W:$X>38 !,?5 W *7," All devices in hunt group "_%ZISHG_" are busy!" Q
 ;
OTHCPU(%1) ;%1 should be either DEVICE or HUNT GROUP
 N %2,X,Y,%ZISMSG S %ZISMSG=0
 F %2="CPU","VOLUME SET" D
 .I %2="VOLUME SET" S X=$P($P(%Z,"^",9),":"),Y=%ZISV
 .E  D GETENV^%ZOSV S X=$P($P(%Z,"^",9),":",2),Y=$P($P(Y,"^",4),":",2)
 .I X=Y!(X="") Q:%1="DEVICE"  D  Q  ;Other Vol Set/Cpu Check
 ..S %ZISHG(0)=%E,%ZISHG=$P(%Z,"^")
 ..I %ZISB S POP=1
 ..E  S IO=" "
 .I %2="VOLUME SET" S $P(%ZISCPU,":")=X
 .E  S $P(%ZISCPU,":",2)=X
 .I %1="HUNT GROUP" K %ZISHG(0)
 .I %IS["Q" S IO("Q")=1,%ZISB=0 S:%1="HUNT GROUP" IO=" "
 .E  I %ZISB&(%ZTYPE="TRM"&($D(%ZISHG(0))&(%IS'["D"))) S POP=1
 .E  W:'$D(IOP)&'%ZISMSG *7,"  ["_%1_" is on another "_%2_" ('"_X_"')]",! S POP=1,%ZISMSG=1
 Q
IOPAR(%DA,%N) ;Return I/O parameters
 Q $S($G(%ZIS(%N))]"":%ZIS(%N),1:$G(^%ZIS(1,%DA,%N)))
 ;
SEC I %Z95]"" S %X=$G(DUZ(0)) I %X'="@" S POP=1 F %A=1:1:$L(%X) I %Z95[$E(%X,%A) S POP=0 Q
 I POP,'$D(IOP),'$D(%ZISHP) W *7,"  [Access Prohibited]"
 Q