diff options
Diffstat (limited to 'system/multiuser/1.7.5/src/priv ops')
| -rw-r--r-- | system/multiuser/1.7.5/src/priv ops | 268 |
1 files changed, 268 insertions, 0 deletions
diff --git a/system/multiuser/1.7.5/src/priv ops b/system/multiuser/1.7.5/src/priv ops new file mode 100644 index 0000000..a92ee76 --- /dev/null +++ b/system/multiuser/1.7.5/src/priv ops @@ -0,0 +1,268 @@ +(* ------------------- VERSION 10 22.04.86 ------------------- *) +PACKET privileged operations DEFINES (* Autor: J.Liedtke *) + + block , + calendar , + collect garbage blocks , + define collector , + fixpoint , + info password , + prio , + save system , + send , + set clock , + set date , + shutup , + unblock : + +LET prio field = 6 , + cr = ""13"" , + archive channel = 31 , + + ack = 0 , + + garbage collect code = 1 , + fixpoint code = 2 , + shutup code = 4 , + shutup and save code = 12 , + reserve code = 19 , + release code = 20 ; + + + +INT PROC prio (TASK CONST task) : + pcb (task, prio field) +ENDPROC prio ; + +PROC prio (TASK CONST task, INT CONST new prio) : + pcb (task, prio field, new prio) +ENDPROC prio ; + +TEXT VAR date text ; + +PROC collect garbage blocks : + + system operation (garbage collect code) + +ENDPROC collect garbage blocks ; + +PROC fixpoint : + + system operation (fixpoint code) + +ENDPROC fixpoint ; + +PROC info password (TEXT CONST old info password, new info password) : + + INT VAR error code ; + IF online + THEN say (""3""5""10"") + FI ; + IF LENGTH new info password < 10 + THEN infopw (old info password + cr, new info pw, error code) ; + IF error code = 0 + THEN shutup + ELSE errorstop ("Falsches Info-Passwort") + FI + ELSE errorstop ("Passwort zu lang (max. 9 Zeichen)") + FI ; + cover tracks . + +new info pw : + IF new info password = "-" + THEN "-" + 9 * "0" + ELSE new info password + "cr" + FI . + +ENDPROC info password ; + +PROC shutup : + + system operation (shutup code) ; + IF command dialogue + THEN wait for configurator ; + page ; + set date + FI + +ENDPROC shutup ; + +PROC save system : + + INT VAR reply ; + TASK VAR channel owner ; + enable stop ; + reserve archive channel ; + IF yes ("Leere Floppy eingelegt") + THEN + reserve archive channel ; + system operation (shutup and save code) ; + release archive channel ; + IF command dialogue + THEN wait for configurator ; + page ; + set date + FI + FI ; + release archive channel . + +reserve archive channel : + channel owner := task (archive channel) ; + IF NOT is niltask (channel owner) + THEN ask channel owner to reserve the channel ; + IF channel owner does not reserve channel + THEN errorstop ("Task """ + name (channel owner) + + """ gibt Kanal " + + text (archive channel) + + " nicht frei") + FI + FI . + +ask channel owner to reserve the channel : + forget (ds) ; + ds := nilspace ; + pingpong (channel owner, reserve code, ds, reply) . + +channel owner does not reserve channel : + (reply <> ack) AND task exists . + +task exists : + reply <> -1 . + +release archive channel : + forget (ds) ; + ds := nilspace ; + pingpong (channel owner, release code, ds, reply) . + +ENDPROC save system ; + +PROC system operation (INT CONST code) : + + INT VAR size, used ; + storage (size, used) ; + IF used <= size + THEN sys op (code) + ELSE errorstop ("Speicherengpass") + FI + +ENDPROC system operation ; + +DATASPACE VAR ds := nilspace ; + +PROC wait for configurator : + + INT VAR i , receipt ; + FOR i FROM 1 UPTO 20 WHILE configurator exists REP + pause (30) ; + forget (ds) ; + ds := nilspace ; + ping pong (configurator, ack, ds, receipt) + UNTIL receipt >= 0 PER . + +configurator exists : + disable stop ; + TASK VAR configurator := task ("configurator") ; + clear error ; + NOT is niltask (configurator) . + +ENDPROC wait for configurator ; + +BOOL VAR hardware clock ok ; +REAL VAR now ; + +PROC set date : + + hardware clock ok := TRUE ; + try to get date and time from hardware ; + IF NOT hardware clock ok + THEN get date and time from user + FI ; + define date and time . + +try to get date and time from hardware : + disable stop ; + REAL VAR previous now ; + now := 0.0 ; + INT VAR try ; + FOR try FROM 1 UPTO 3 WHILE hardware clock ok REP + previous now := now ; + now := date (hardwares today) + time (hardwares time) + UNTIL now = previous now OR is error PER ; + clear error ; + enable stop . + +get date and time from user : + line (2) ; + put (" Bitte geben Sie das heutige Datum ein :") ; + date text := date ; + TEXT VAR exit char ; + editget (date text, cr, "", exit char) ; + now := date (date text) ; + line ; + put (" und die aktuelle Uhrzeit :") ; + date text := time of day ; + editget (date text, cr, "", exit char) ; + now INCR time (date text) ; + IF NOT last conversion ok + THEN errorstop ("Falsche Zeitangabe") + FI . + +hardwares today : calendar (3) + "." + calendar (4) + "." + calendar (5) . + +hardwares time : calendar (2) + ":" + calendar (1) . + +define date and time : + set clock (now) . + +ENDPROC set date ; + +TEXT PROC calendar (INT CONST index) : + + INT VAR bcd ; + control (10, index, 0, bcd) ; + IF bcd < 0 + THEN hardware clock ok := FALSE ; "" + ELSE text (low digit + 10 * high digit) + FI . + +low digit : bcd AND 15 . + +high digit: (bcd AND (15*256)) DIV 256 . + +ENDPROC calendar ; + +PROC infopw (TEXT CONST old, new, INT VAR error code) : + EXTERNAL 81 +ENDPROC infopw ; + +PROC sys op (INT CONST code) : + EXTERNAL 90 +ENDPROC sys op ; + +PROC set clock (REAL CONST time) : + EXTERNAL 103 +ENDPROC set clock ; + +PROC pcb (TASK CONST task, INT CONST field, value) : + EXTERNAL 105 +ENDPROC pcb ; + +PROC unblock (TASK CONST task) : + EXTERNAL 108 +ENDPROC unblock ; + +PROC block (TASK CONST task) : + EXTERNAL 109 +ENDPROC block ; + +PROC send (TASK CONST from, to, INT CONST order, DATASPACE VAR ds, + INT VAR receipt) : + EXTERNAL 127 +ENDPROC send ; + +PROC define collector (TASK CONST task) : + EXTERNAL 128 +ENDPROC define collector ; + +ENDPACKET privileged operations ; + |